* [PATCH 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-08-19 12:50 ` Mikhail Ulyanov
0 siblings, 0 replies; 78+ messages in thread
From: Mikhail Ulyanov @ 2014-08-19 12:50 UTC (permalink / raw)
To: m.chehab, horms, magnus.damm, robh+dt, pawel.moll, mark.rutland
Cc: laurent.pinchart, linux-sh, linux-media, devicetree, Mikhail Ulyanov
Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
---
drivers/media/platform/Kconfig | 11 +
drivers/media/platform/Makefile | 2 +
drivers/media/platform/jpu.c | 1630 +++++++++++++++++++++++++++++++++++++++
3 files changed, 1646 insertions(+)
create mode 100644 drivers/media/platform/jpu.c
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 6d86646..1b8c846 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
To compile this driver as a module, choose M here: the module
will be called vsp1.
+config VIDEO_RENESAS_JPU
+ tristate "Renesas JPEG Processing Unit"
+ depends on VIDEO_DEV && VIDEO_V4L2
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_MEM2MEM_DEV
+ ---help---
+ This is a V4L2 driver for the Renesas JPEG Processing Unit.
+
+ To compile this driver as a module, choose M here: the module
+ will be called jpu.
+
config VIDEO_TI_VPE
tristate "TI VPE (Video Processing Engine) driver"
depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX
diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index e5269da..e438534 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) += soc_camera/
obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
+obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
+
obj-y += davinci/
obj-$(CONFIG_ARCH_OMAP) += omap/
diff --git a/drivers/media/platform/jpu.c b/drivers/media/platform/jpu.c
new file mode 100644
index 0000000..8630baf
--- /dev/null
+++ b/drivers/media/platform/jpu.c
@@ -0,0 +1,1630 @@
+/*
+ * Author: Mikhail Ulyanov <source@cogentembedded.com>
+ * Copyright (C) 2014 Cogent Embedded, Inc.
+ * Copyright (C) 2014 Renesas Electronics Corporation
+ *
+ * This is based on the drivers/media/platform/s5p-jpu driver by
+ * Andrzej Pietrasiewicz and Jacek Anaszewski.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+
+
+#define JPU_M2M_NAME "jpu"
+
+#define JPU_WIDTH_MIN 16
+#define JPU_HEIGHT_MIN 16
+#define JPU_WIDTH_MAX 4096
+#define JPU_HEIGHT_MAX 4096
+
+#define JPU_ENCODE 0
+#define JPU_DECODE 1
+
+/* Flags that indicate a format can be used for capture/output */
+#define JPU_FMT_TYPE_OUTPUT 0
+#define JPU_FMT_TYPE_CAPTURE 1
+#define JPU_ENC_CAPTURE (1 << 0)
+#define JPU_ENC_OUTPUT (1 << 1)
+#define JPU_DEC_CAPTURE (1 << 2)
+#define JPU_DEC_OUTPUT (1 << 3)
+
+/*
+ * JPEG registers and bits
+ */
+
+/* JPEG code mode register */
+#define JCMOD 0x00
+#define JCMOD_SOI_DISABLE (1 << 8)
+#define JCMOD_SOI_ENABLE (0 << 8)
+#define JCMOD_PCTR (1 << 7)
+#define JCMOD_MSKIP_DISABLE (0 << 5)
+#define JCMOD_MSKIP_ENABLE (1 << 5)
+#define JCMOD_DSP_ENC (0 << 3)
+#define JCMOD_DSP_DEC (1 << 3)
+#define JCMOD_REDU (7 << 0)
+#define JCMOD_REDU_422 (1 << 0)
+#define JCMOD_REDU_420 (2 << 0)
+
+/* JPEG code command register */
+#define JCCMD 0x04
+#define JCCMD_SRST (1 << 12)
+#define JCCMD_BRST (1 << 7)
+#define JCCMD_JEND (1 << 2)
+#define JCCMD_JSRT (1 << 0)
+
+/* JPEG code quantanization table number register */
+#define JCQTN 0x0C
+#define JCQTN_SHIFT(t) (((t) - 1) << 1)
+
+/* JPEG code Huffman table number register */
+#define JCHTN 0x10
+#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
+#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
+
+#define JCDRIU 0x14 /* JPEG code DRI upper register */
+#define JCDRIL 0x18 /* JPEG code DRI lower register */
+#define JCVSZU 0x1C /* JPEG code vertical size upper register */
+#define JCVSZD 0x20 /* JPEG code vertical size lower register */
+#define JCHSZU 0x24 /* JPEG code horizontal size upper register */
+#define JCHSZD 0x28 /* JPEG code horizontal size lower register */
+#define JCSZ_MASK 0xff /* JPEG code h/v size register contains only 1 byte*/
+
+#define JCDTCU 0x2C /* JPEG code data count upper register */
+#define JCDTCM 0x30 /* JPEG code data count middle register */
+#define JCDTCD 0x34 /* JPEG code data count lower register */
+
+/* JPEG interrupt enable register */
+#define JINTE 0x38
+
+/* JPEG interrupt status register */
+#define JINTS 0x3C
+#define JINTS_MASK 0x7c68
+
+#define INT(n) (1 << n)
+
+#define JCDERR 0x40 /* JPEG code decode error register */
+
+/* JPEG interface encoding */
+#define JIFECNT 0x70
+#define JIFECNT_INFT_422 0
+#define JIFECNT_INFT_420 1
+#define JIFECNT_SWAP_WB (0x3 << 4)
+
+/* JPEG interface encode source Y address register 1 */
+#define JIFESYA1 0x74
+/* JPEG interface encode source C address register 1 */
+#define JIFESCA1 0x78
+/* JPEG interface encode source Y address register 2 */
+#define JIFESYA2 0x7C
+/* JPEG interface encode source C address register 2 */
+#define JIFESCA2 0x80
+/* JPEG interface encode source memory width register */
+#define JIFESMW 0x84
+/* JPEG interface encode source vertical size register */
+#define JIFESVSZ 0x88
+/* JPEG interface encode source horizontal size register */
+#define JIFESHSZ 0x8C
+/* JPEG interface encode destination address register 1 */
+#define JIFEDA1 0x90
+/* JPEG interface encode destination address register 2 */
+#define JIFEDA2 0x94
+
+/* JPEG decoding control register */
+#define JIFDCNT 0xA0
+#define JIFDCNT_SWAP (3 << 1)
+#define JIFDCNT_SWAP_NO (0 << 1)
+#define JIFDCNT_SWAP_BYTE (1 << 1)
+#define JIFDCNT_SWAP_WORD (2 << 1)
+#define JIFDCNT_SWAP_WB (3 << 1)
+
+/* JPEG decode source address register 1 */
+#define JIFDSA1 0xA4
+/* JPEG decode source address register 2 */
+#define JIFDSA2 0xA8
+/* JPEG decode data reload size register */
+#define JIFDDRSZ 0xAC
+/* JPEG decode data destination memory width register */
+#define JIFDDMW 0xB0
+/* JPEG decode data destination vertical size register */
+#define JIFDDVSZ 0xB4
+/* JPEG decode data destination horizontal size register */
+#define JIFDDHSZ 0xB8
+/* JPEG decode data destination Y address register 1 */
+#define JIFDDYA1 0xBC
+/* JPEG decode data destination C address register 1 */
+#define JIFDDCA1 0xC0
+/* JPEG decode data destination Y address register 2 */
+#define JIFDDYA2 0xC4
+/* JPEG decode data destination C address register 2 */
+#define JIFDDCA2 0xC8
+
+/* JPEG code quantization tables registers */
+#define JCQTBL(n) (0x10000 + (n) * 0x40)
+
+/* JPEG code Huffman table DC registers */
+#define JCHTBD(n) (0x10100 + (n) * 0x100)
+
+/* JPEG code Huffman table AC registers */
+#define JCHTBA(n) (0x10120 + (n) * 0x100)
+
+#define JPU_JPEG_HDR_SIZE 0x250
+
+enum jpu_status {
+ JPU_OK,
+ JPU_BUSY,
+ JPU_ERR
+};
+
+/**
+ * struct jpu - JPEG IP abstraction
+ * @mutex: the mutex protecting this structure
+ * @slock: spinlock protecting the device contexts
+ * @v4l2_dev: v4l2 device for mem2mem mode
+ * @vfd_encoder: video device node for encoder mem2mem mode
+ * @vfd_decoder: video device node for decoder mem2mem mode
+ * @m2m_dev: v4l2 mem2mem device data
+ * @regs: JPEG IP registers mapping
+ * @irq: JPEG IP irq
+ * @clk: JPEG IP clock
+ * @dev: JPEG IP struct device
+ * @alloc_ctx: videobuf2 memory allocator's context
+ * @bounds: platform specific IP limitations
+ * @wq: waitqueue for header parsing handling
+ * @statatus: current driver state variable
+ * @ref_counter: reference counter
+ */
+struct jpu {
+ struct mutex mutex;
+ spinlock_t slock;
+
+ struct v4l2_device v4l2_dev;
+ struct video_device *vfd_encoder;
+ struct video_device *vfd_decoder;
+ struct v4l2_m2m_dev *m2m_dev;
+
+ void __iomem *regs;
+ unsigned int irq;
+ struct clk *clk;
+ struct device *dev;
+ void *alloc_ctx;
+ struct jpu_bounds *bounds;
+ wait_queue_head_t wq;
+ enum jpu_status status;
+ int ref_count;
+};
+
+/**
+ * struct jpu_fmt - driver's internal format data
+ * @name: format descritpion
+ * @fourcc: the fourcc code, 0 if not applicable
+ * @depth: number of bits per pixel
+ * @h_align: horizontal alignment order (align to 2^h_align)
+ * @v_align: vertical alignment order (align to 2^v_align)
+ * @types: types of queue this format is applicable to
+ */
+struct jpu_fmt {
+ char *name;
+ u32 fourcc;
+ int depth;
+ int h_align;
+ int v_align;
+ u32 types;
+};
+
+/**
+ * jpu_q_data - parameters of one queue
+ * @fmt: driver-specific format of this queue
+ * @w: image width
+ * @h: image height
+ * @size: image buffer size in bytes
+ */
+struct jpu_q_data {
+ struct jpu_fmt *fmt;
+ u32 w;
+ u32 h;
+ u32 size;
+};
+
+/**
+ * jpu_ctx - the device context data
+ * @jpu: JPEG IP device for this context
+ * @mode: compression (encode) operation or decompression (decode)
+ * @compr_quality: destination image quality in compression (encode) mode
+ * @out_q: source (output) queue information
+ * @fh: file handler;
+ * @hdr_parsed: set if header has been parsed during decompression
+ * @ctrl_handler: controls handler
+ */
+struct jpu_ctx {
+ struct jpu *jpu;
+ unsigned int mode;
+ unsigned short compr_quality;
+ struct jpu_q_data out_q;
+ struct jpu_q_data cap_q;
+ struct v4l2_fh fh;
+ bool hdr_parsed;
+ struct v4l2_ctrl_handler ctrl_handler;
+};
+
+static struct jpu_fmt jpu_formats[] = {
+ {
+ .name = "JPEG JFIF",
+ .fourcc = V4L2_PIX_FMT_JPEG,
+ .types = JPU_ENC_CAPTURE | JPU_DEC_OUTPUT,
+ },
+ {
+ .name = "YUV 4:2:2 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .depth = 16,
+ .h_align = 3,
+ .v_align = 3,
+ .types = JPU_ENC_OUTPUT,
+ },
+ {
+ .name = "YUV 4:2:0 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .depth = 12,
+ .h_align = 3,
+ .v_align = 3,
+ .types = JPU_ENC_OUTPUT,
+ },
+ {
+ .name = "YUV 4:2:2 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .depth = 16,
+ .h_align = 2,
+ .v_align = 2,
+ .types = JPU_DEC_CAPTURE,
+ },
+ {
+ .name = "YUV 4:2:0 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .depth = 12,
+ .h_align = 2,
+ .v_align = 2,
+ .types = JPU_DEC_CAPTURE,
+ },
+};
+
+static const u8 zigzag[] = {
+ 0x03, 0x02, 0x0b, 0x13, 0x0a, 0x01, 0x00, 0x09,
+ 0x12, 0x1b, 0x23, 0x1a, 0x11, 0x08, 0x07, 0x06,
+ 0x0f, 0x10, 0x19, 0x22, 0x2b, 0x33, 0x2a, 0x21,
+ 0x18, 0x17, 0x0e, 0x05, 0x04, 0x0d, 0x16, 0x1f,
+ 0x20, 0x29, 0x32, 0x3b, 0x3a, 0x31, 0x28, 0x27,
+ 0x1e, 0x15, 0x0e, 0x14, 0x10, 0x26, 0x2f, 0x30,
+ 0x39, 0x38, 0x37, 0x2e, 0x25, 0x1c, 0x24, 0x2b,
+ 0x36, 0x3f, 0x3e, 0x35, 0x2c, 0x34, 0x3d, 0x3c
+};
+
+static unsigned char hdr_blob0[] = {
+ 0xff, 0xd8, 0xff, 0xfe, 0x00, 0x0e, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x84
+};
+
+static unsigned char hdr_blob1[] = {
+ 0xff, 0xc0, 0x00, 0x11, 0x08
+};
+
+static unsigned char hdr_blob2[] = {
+ 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff,
+ 0xc4, 0x01, 0xa2
+};
+
+static const unsigned int qtbl_lum[2][16] = {
+ {
+ 0x14401927, 0x322e3e44, 0x10121726, 0x26354144,
+ 0x19171f26, 0x35414444, 0x27262635, 0x41444444,
+ 0x32263541, 0x44444444, 0x2e354144, 0x44444444,
+ 0x3e414444, 0x44444444, 0x44444444, 0x44444444
+ },
+ {
+ 0x08060608, 0x0c0e1011, 0x06060608, 0x0a0d0c0f,
+ 0x06060708, 0x0d0e1218, 0x0808080e, 0x0d131823,
+ 0x0c0a0d0d, 0x141a2227, 0x0e0d0e13, 0x1a222727,
+ 0x100c1318, 0x22272727, 0x110f1823, 0x27272727
+ }
+};
+
+static const unsigned int qtbl_chr[2][16] = {
+ {
+ 0x15192026, 0x36444444, 0x191c1826, 0x36444444,
+ 0x2018202b, 0x42444444, 0x26262b35, 0x44444444,
+ 0x36424444, 0x44444444, 0x44444444, 0x44444444,
+ 0x44444444, 0x44444444, 0x44444444, 0x44444444
+ },
+ {
+ 0x0908090b, 0x0e111318, 0x080a090b, 0x0e0d1116,
+ 0x09090d0e, 0x0d0f171a, 0x0b0b0e0e, 0x0f141a21,
+ 0x0e0e0d0f, 0x14182127, 0x110d0f14, 0x18202727,
+ 0x1311171a, 0x21272727, 0x18161a21, 0x27272727
+ }
+};
+
+static const unsigned int hdctbl_lum[7] = {
+ 0x00010501, 0x01010101, 0x01000000, 0x00000000,
+ 0x00010203, 0x04050607, 0x08090a0b
+};
+
+static const unsigned int hdctbl_chr[7] = {
+ 0x00030101, 0x01010101, 0x01010100, 0x00000000,
+ 0x00010203, 0x04050607, 0x08090a0b
+};
+
+static const unsigned int hactbl_lum[45] = {
+ 0x00020103, 0x03020403, 0x05050404, 0x0000017d,
+ 0x01020300, 0x04110512, 0x21314106, 0x13516107,
+ 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
+ 0x24336272, 0x82090a16, 0x1718191a, 0x25262728,
+ 0x292a3435, 0x36373839, 0x3a434445, 0x46474849,
+ 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
+ 0x6a737475, 0x76777879, 0x7a838485, 0x86878889,
+ 0x8a929394, 0x95969798, 0x999aa2a3, 0xa4a5a6a7,
+ 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
+ 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2,
+ 0xe3e4e5e6, 0xe7e8e9ea, 0xf1f2f3f4, 0xf5f6f7f8,
+ 0xf9fa0000
+};
+
+static const unsigned int hactbl_chr[45] = {
+ 0x00020102, 0x04040304, 0x07050404, 0x00010277,
+ 0x00010203, 0x11040521, 0x31061241, 0x51076171,
+ 0x13223281, 0x08144291, 0xa1b1c109, 0x233352f0,
+ 0x156372d1, 0x0a162434, 0xe125f117, 0x18191a26,
+ 0x2728292a, 0x35363738, 0x393a4344, 0x45464748,
+ 0x494a5354, 0x55565758, 0x595a6364, 0x65666768,
+ 0x696a7374, 0x75767778, 0x797a8283, 0x84858687,
+ 0x88898a92, 0x93949596, 0x9798999a, 0xa2a3a4a5,
+ 0xa6a7a8a9, 0xaab2b3b4, 0xb5b6b7b8, 0xb9bac2c3,
+ 0xc4c5c6c7, 0xc8c9cad2, 0xd3d4d5d6, 0xd7d8d9da,
+ 0xe2e3e4e5, 0xe6e7e8e9, 0xeaf2f3f4, 0xf5f6f7f8,
+ 0xf9fa0000
+};
+
+static struct jpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
+{
+ return container_of(c->handler, struct jpu_ctx, ctrl_handler);
+}
+
+static struct jpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
+{
+ return container_of(fh, struct jpu_ctx, fh);
+}
+
+static void jpu_set_tbl(void __iomem *regs, const unsigned int *tbl,
+ int len) {
+ unsigned int i;
+
+ for (i = 0; i < len; i++)
+ iowrite32(tbl[i], regs + (i << 2));
+}
+
+static void jpu_set_qtbl(void __iomem *regs, int quality)
+{
+ jpu_set_tbl(regs + JCQTBL(0), qtbl_lum[quality],
+ ARRAY_SIZE(qtbl_lum[quality]));
+ jpu_set_tbl(regs + JCQTBL(1), qtbl_chr[quality],
+ ARRAY_SIZE(qtbl_chr[quality]));
+}
+
+static void jpu_set_htbl(void __iomem *regs)
+{
+ jpu_set_tbl(regs + JCHTBD(0), hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
+ jpu_set_tbl(regs + JCHTBD(1), hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
+ jpu_set_tbl(regs + JCHTBA(0), hactbl_lum, ARRAY_SIZE(hactbl_lum));
+ jpu_set_tbl(regs + JCHTBA(1), hactbl_chr, ARRAY_SIZE(hactbl_chr));
+}
+
+static void jpu_int_clear(void __iomem *regs, unsigned int int_status)
+{
+ iowrite32(~int_status & JINTS_MASK, regs + JINTS);
+
+ if (int_status & (INT(6) | INT(5) | INT(3)))
+ iowrite32(JCCMD_JEND, regs + JCCMD);
+}
+
+static void jpu_reset(void __iomem *regs)
+{
+ iowrite32(JCCMD_SRST, regs + JCCMD);
+ while ((ioread32(regs + JCCMD) & JCCMD_SRST) != 0)
+ cpu_relax();
+}
+
+/*
+ * ============================================================================
+ * video ioctl operations
+ * ============================================================================
+ */
+static void put_byte(unsigned long *p, u8 v)
+{
+ u8 *addr = (u8 *)*p;
+
+ *addr = v;
+ (*p)++;
+}
+
+static void put_short_be(unsigned long *p, u16 v)
+{
+ u16 *addr = (u16 *)*p;
+
+ *addr = cpu_to_be16(v);
+ *p += 2;
+}
+
+static void put_word_be(unsigned long *p, u32 v)
+{
+ u32 *addr = (u32 *)*p;
+
+ *addr = cpu_to_be32(v);
+ *p += 4;
+}
+
+static void put_blob_byte(unsigned long *p, const unsigned char *blob,
+ unsigned int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ put_byte(p, blob[i]);
+}
+
+static void put_qtbl(unsigned long *p, unsigned char id,
+ const unsigned int *qtbl)
+{
+ int i;
+
+ put_byte(p, id);
+ for (i = 0; i < ARRAY_SIZE(zigzag); i++)
+ put_byte(p, *((u8 *)qtbl + zigzag[i]));
+}
+
+static void put_htbl(unsigned long *p, unsigned char tc,
+ const unsigned int *htbl, unsigned int len)
+{
+ int i;
+
+ put_byte(p, tc);
+ for (i = 0; i < len; i++)
+ put_word_be(p, htbl[i]);
+}
+
+static void jpu_generate_hdr(struct jpu_q_data *q, int quality, void *buffer)
+{
+ /* SOI(2) - DQT(134 / 2 tables) - SOF0(19) - DHT(420 / 2 tables) */
+ unsigned long p = (unsigned long)buffer;
+
+ put_blob_byte(&p, hdr_blob0, ARRAY_SIZE(hdr_blob0));
+
+ put_qtbl(&p, 0x00, qtbl_lum[quality]);
+ put_qtbl(&p, 0x01, qtbl_chr[quality]);
+
+ put_blob_byte(&p, hdr_blob1, ARRAY_SIZE(hdr_blob1));
+
+ put_short_be(&p, q->h);
+ put_short_be(&p, q->w);
+
+ put_byte(&p, 0x03);
+ put_byte(&p, 0x01);
+
+ if (q->fmt->fourcc == V4L2_PIX_FMT_NV16)
+ put_byte(&p, 0x21);
+ else
+ put_byte(&p, 0x22);
+
+ put_blob_byte(&p, hdr_blob2, ARRAY_SIZE(hdr_blob2));
+
+ put_htbl(&p, 0x00, hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
+ put_htbl(&p, 0x10, hactbl_lum, ARRAY_SIZE(hactbl_lum));
+ p -= 2;
+
+ put_htbl(&p, 0x01, hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
+ put_htbl(&p, 0x11, hactbl_chr, ARRAY_SIZE(hactbl_chr));
+}
+
+static int jpu_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode == JPU_ENCODE) {
+ strlcpy(cap->driver, JPU_M2M_NAME " encoder",
+ sizeof(cap->driver));
+ strlcpy(cap->card, JPU_M2M_NAME " encoder",
+ sizeof(cap->card));
+ } else {
+ strlcpy(cap->driver, JPU_M2M_NAME " decoder",
+ sizeof(cap->driver));
+ strlcpy(cap->card, JPU_M2M_NAME " decoder",
+ sizeof(cap->card));
+ }
+ cap->bus_info[0] = 0;
+ cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M |
+ V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT;
+ return 0;
+}
+
+static struct jpu_fmt *jpu_find_format(unsigned int mode, u32 pixelformat,
+ unsigned int fmt_type)
+{
+ unsigned int k, fmt_flag;
+
+ if (mode == JPU_ENCODE)
+ fmt_flag = (fmt_type == JPU_FMT_TYPE_OUTPUT) ? JPU_ENC_OUTPUT :
+ JPU_ENC_CAPTURE;
+ else
+ fmt_flag = (fmt_type == JPU_FMT_TYPE_OUTPUT) ? JPU_DEC_OUTPUT :
+ JPU_DEC_CAPTURE;
+
+ for (k = 0; k < ARRAY_SIZE(jpu_formats); k++) {
+ struct jpu_fmt *fmt = &jpu_formats[k];
+
+ if (fmt->fourcc == pixelformat &&
+ fmt->types & fmt_flag) {
+ return fmt;
+ }
+ }
+
+ return NULL;
+}
+
+static int jpu_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
+{
+ int i, num = 0;
+
+ for (i = 0; i < ARRAY_SIZE(jpu_formats); ++i) {
+ if (jpu_formats[i].types & type) {
+ /* index-th format of type type found ? */
+ if (num == f->index)
+ break;
+ /*
+ * Correct type but haven't reached our index yet,
+ * just increment per-type index
+ */
+ ++num;
+ }
+ }
+
+ /* Format not found */
+ if (i >= ARRAY_SIZE(jpu_formats))
+ return -EINVAL;
+
+ strlcpy(f->description, jpu_formats[i].name, sizeof(f->description));
+ f->pixelformat = jpu_formats[i].fourcc;
+
+ return 0;
+}
+
+static int jpu_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode == JPU_ENCODE)
+ return jpu_enum_fmt(f, JPU_ENC_CAPTURE);
+
+ return jpu_enum_fmt(f, JPU_DEC_CAPTURE);
+}
+
+static int jpu_enum_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode == JPU_ENCODE)
+ return jpu_enum_fmt(f, JPU_ENC_OUTPUT);
+
+ return jpu_enum_fmt(f, JPU_DEC_OUTPUT);
+}
+
+static struct jpu_q_data *jpu_get_q_data(struct jpu_ctx *ctx,
+ enum v4l2_buf_type type)
+{
+ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ return &ctx->out_q;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ return &ctx->cap_q;
+ default:
+ BUG();
+ }
+}
+
+static int jpu_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct vb2_queue *vq;
+ struct jpu_q_data *q_data;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
+ ctx->mode == JPU_DECODE && !ctx->hdr_parsed)
+ return -EINVAL;
+
+ q_data = jpu_get_q_data(ctx, f->type);
+
+ pix->width = q_data->w;
+ pix->height = q_data->h;
+ pix->field = V4L2_FIELD_NONE;
+ pix->pixelformat = q_data->fmt->fourcc;
+ pix->bytesperline = 0;
+ if (pix->pixelformat != V4L2_PIX_FMT_JPEG)
+ pix->bytesperline = q_data->w;
+ pix->sizeimage = q_data->size;
+
+ return 0;
+}
+
+
+static void jpu_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
+ unsigned int walign, u32 *h,
+ unsigned int hmin, unsigned int hmax,
+ unsigned int halign)
+{
+ int width, height, w_step, h_step;
+
+ width = *w;
+ height = *h;
+
+ w_step = 1 << walign;
+ h_step = 1 << halign;
+ v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 3);
+
+ if (*w < width && *w + w_step < wmax)
+ *w += w_step;
+ if (*h < height && *h + h_step < hmax)
+ *h += h_step;
+}
+
+static int jpu_vidioc_try_fmt(struct v4l2_format *f, struct jpu_fmt *fmt,
+ struct jpu_ctx *ctx)
+{
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+
+ if (pix->field == V4L2_FIELD_ANY)
+ pix->field = V4L2_FIELD_NONE;
+ else if (pix->field != V4L2_FIELD_NONE)
+ return -EINVAL;
+
+ /*
+ * V4L2 specification suggests the driver corrects the format struct
+ * if any of the dimensions is unsupported
+ */
+ jpu_bound_align_image(&pix->width, JPU_WIDTH_MIN, JPU_WIDTH_MAX,
+ fmt->h_align, &pix->height, JPU_HEIGHT_MIN,
+ JPU_HEIGHT_MAX, fmt->v_align);
+
+ if (fmt->fourcc == V4L2_PIX_FMT_JPEG) {
+ if (pix->sizeimage <= 0)
+ pix->sizeimage = PAGE_SIZE;
+ pix->bytesperline = 0;
+ } else {
+ u32 bpl = pix->bytesperline;
+
+ if (bpl < pix->width)
+ bpl = pix->width;
+
+ pix->bytesperline = bpl;
+ pix->sizeimage = (pix->width * pix->height * fmt->depth) >> 3;
+ }
+
+ return 0;
+}
+
+static int jpu_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+ struct jpu_fmt *fmt;
+
+ fmt = jpu_find_format(ctx->mode, f->fmt.pix.pixelformat,
+ JPU_FMT_TYPE_CAPTURE);
+ if (!fmt) {
+ v4l2_err(&ctx->jpu->v4l2_dev,
+ "Fourcc format (0x%08x) invalid.\n",
+ f->fmt.pix.pixelformat);
+ return -EINVAL;
+ }
+
+ return jpu_vidioc_try_fmt(f, fmt, ctx);
+}
+
+static int jpu_try_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+ struct jpu_fmt *fmt;
+
+ fmt = jpu_find_format(ctx->mode, f->fmt.pix.pixelformat,
+ JPU_FMT_TYPE_OUTPUT);
+ if (!fmt) {
+ v4l2_err(&ctx->jpu->v4l2_dev,
+ "Fourcc format (0x%08x) invalid.\n",
+ f->fmt.pix.pixelformat);
+ return -EINVAL;
+ }
+
+ return jpu_vidioc_try_fmt(f, fmt, ctx);
+}
+
+static int jpu_s_fmt(struct jpu_ctx *ctx, struct v4l2_format *f)
+{
+ struct vb2_queue *vq;
+ struct jpu_q_data *q_data;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ unsigned int f_type;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ q_data = jpu_get_q_data(ctx, f->type);
+
+ if (vb2_is_busy(vq)) {
+ v4l2_err(&ctx->jpu->v4l2_dev, "%s queue busy\n", __func__);
+ return -EBUSY;
+ }
+
+ f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
+ JPU_FMT_TYPE_CAPTURE;
+
+ q_data->fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
+ q_data->w = pix->width;
+ q_data->h = pix->height;
+ if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
+ q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3;
+ else
+ q_data->size = pix->sizeimage;
+
+ return 0;
+}
+
+static int jpu_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ int ret;
+
+ ret = jpu_try_fmt_vid_cap(file, priv, f);
+ if (ret)
+ return ret;
+
+ return jpu_s_fmt(fh_to_ctx(priv), f);
+}
+
+static int jpu_s_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ int ret;
+
+ ret = jpu_try_fmt_vid_out(file, priv, f);
+ if (ret)
+ return ret;
+
+ return jpu_s_fmt(fh_to_ctx(priv), f);
+}
+
+
+static int jpu_g_selection(struct file *file, void *priv,
+ struct v4l2_selection *s)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
+ s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ /* For JPEG blob active == default == bounds */
+ switch (s->target) {
+ case V4L2_SEL_TGT_CROP:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_COMPOSE:
+ case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+ s->r.width = ctx->out_q.w;
+ s->r.height = ctx->out_q.h;
+ break;
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ case V4L2_SEL_TGT_COMPOSE_PADDED:
+ s->r.width = ctx->cap_q.w;
+ s->r.height = ctx->cap_q.h;
+ break;
+ default:
+ return -EINVAL;
+ }
+ s->r.left = 0;
+ s->r.top = 0;
+ return 0;
+}
+
+/*
+ * V4L2 controls
+ */
+static int jpu_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct jpu_ctx *ctx = ctrl_to_ctx(ctrl);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ctx->jpu->slock, flags);
+
+ if (ctrl->id == V4L2_CID_JPEG_COMPRESSION_QUALITY)
+ ctx->compr_quality = ctrl->val;
+
+ spin_unlock_irqrestore(&ctx->jpu->slock, flags);
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops jpu_ctrl_ops = {
+ .s_ctrl = jpu_s_ctrl,
+};
+
+
+static const struct v4l2_ioctl_ops jpu_ioctl_ops = {
+ .vidioc_querycap = jpu_querycap,
+
+ .vidioc_enum_fmt_vid_cap = jpu_enum_fmt_vid_cap,
+ .vidioc_enum_fmt_vid_out = jpu_enum_fmt_vid_out,
+
+ .vidioc_g_fmt_vid_cap = jpu_g_fmt,
+ .vidioc_g_fmt_vid_out = jpu_g_fmt,
+
+ .vidioc_try_fmt_vid_cap = jpu_try_fmt_vid_cap,
+ .vidioc_try_fmt_vid_out = jpu_try_fmt_vid_out,
+
+ .vidioc_s_fmt_vid_cap = jpu_s_fmt_vid_cap,
+ .vidioc_s_fmt_vid_out = jpu_s_fmt_vid_out,
+
+ .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
+ .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
+ .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
+ .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
+ .vidioc_streamon = v4l2_m2m_ioctl_streamon,
+ .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
+
+ .vidioc_g_selection = jpu_g_selection,
+};
+
+static int jpu_controls_create(struct jpu_ctx *ctx)
+{
+ struct v4l2_ctrl *ctrl;
+
+ v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
+
+ if (ctx->mode == JPU_ENCODE) {
+ v4l2_ctrl_new_std(&ctx->ctrl_handler, &jpu_ctrl_ops,
+ V4L2_CID_JPEG_COMPRESSION_QUALITY,
+ 0, 1, 1, 1);
+ }
+
+ if (ctx->ctrl_handler.error)
+ return ctx->ctrl_handler.error;
+
+ if (ctx->mode == JPU_DECODE)
+ ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
+ V4L2_CTRL_FLAG_READ_ONLY;
+
+ return 0;
+}
+
+/*
+ * ============================================================================
+ * Queue operations
+ * ============================================================================
+ */
+static int jpu_queue_setup(struct vb2_queue *vq,
+ const struct v4l2_format *fmt,
+ unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
+ struct jpu_q_data *q_data;
+ unsigned int size, count = *nbuffers;
+
+ q_data = jpu_get_q_data(ctx, vq->type);
+
+ size = q_data->size;
+
+ /*
+ * Header is parsed during decoding and parsed information stored
+ * in the context so we do not allow another buffer to overwrite it
+ */
+ if (ctx->mode == JPU_DECODE)
+ count = 1;
+
+ *nbuffers = count;
+ *nplanes = 1;
+ sizes[0] = size;
+ alloc_ctxs[0] = ctx->jpu->alloc_ctx;
+
+ return 0;
+}
+
+static int jpu_buf_prepare(struct vb2_buffer *vb)
+{
+ struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct jpu_q_data *q_data;
+
+ q_data = jpu_get_q_data(ctx, vb->vb2_queue->type);
+
+ if (vb2_plane_size(vb, 0) < q_data->size) {
+ pr_err("%s: data will not fit into plane (%lu < %lu)\n",
+ __func__, vb2_plane_size(vb, 0), (long)q_data->size);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(vb, 0, q_data->size);
+
+ return 0;
+}
+
+static void jpu_buf_queue(struct vb2_buffer *vb)
+{
+ struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+
+ if (ctx->mode == JPU_DECODE &&
+ vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ struct jpu_q_data *q_data;
+ struct jpu *jpu = ctx->jpu;
+ unsigned int subsampling, w_out, h_out, w_cap, h_cap;
+ unsigned long src_addr, flags;
+
+ src_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
+
+ jpu_reset(jpu->regs);
+
+ iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
+ iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
+ iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
+
+ spin_lock_irqsave(&jpu->slock, flags);
+ jpu->status = JPU_BUSY;
+ spin_unlock_irqrestore(&ctx->jpu->slock, flags);
+
+ iowrite32(INT(3), jpu->regs + JINTE);
+ iowrite32(src_addr, jpu->regs + JIFDSA1);
+ iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
+
+ if (wait_event_interruptible_timeout(jpu->wq,
+ jpu->status != JPU_BUSY,
+ msecs_to_jiffies(100)) > 0
+ && jpu->status == JPU_OK)
+ ctx->hdr_parsed = true;
+
+ w_out = ioread32(jpu->regs + JCHSZU) << 8 |
+ ioread32(jpu->regs + JCHSZD);
+
+ h_out = ioread32(jpu->regs + JCVSZU) << 8 |
+ ioread32(jpu->regs + JCVSZD);
+
+ w_cap = ioread32(jpu->regs + JIFDDHSZ);
+ h_cap = ioread32(jpu->regs + JIFDDVSZ);
+
+ switch (ioread32(jpu->regs + JCMOD) & JCMOD_REDU) {
+ case JCMOD_REDU_422:
+ subsampling = V4L2_PIX_FMT_NV16;
+ break;
+ case JCMOD_REDU_420:
+ subsampling = V4L2_PIX_FMT_NV12;
+ break;
+ default:
+ subsampling = 0;
+ }
+
+ if (!ctx->hdr_parsed || !subsampling || w_out > JPU_WIDTH_MAX ||
+ w_out < JPU_WIDTH_MIN || h_out > JPU_HEIGHT_MAX ||
+ h_out < JPU_HEIGHT_MIN) {
+ pr_err("incompatible or corrupted JPEG data\n");
+ vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
+ return;
+ }
+
+ q_data = &ctx->out_q;
+ q_data->w = w_out;
+ q_data->h = h_out;
+
+ q_data = &ctx->cap_q;
+ q_data->w = w_cap;
+ q_data->h = h_cap;
+
+ q_data->fmt = jpu_find_format(JPU_DECODE, subsampling,
+ JPU_FMT_TYPE_CAPTURE);
+
+ q_data->size =
+ (q_data->w * q_data->h * q_data->fmt->depth) >> 3;
+ }
+
+ if (ctx->fh.m2m_ctx)
+ v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
+}
+
+static int jpu_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ return 0;
+}
+
+static void jpu_stop_streaming(struct vb2_queue *q)
+{
+}
+
+static struct vb2_ops jpu_qops = {
+ .queue_setup = jpu_queue_setup,
+ .buf_prepare = jpu_buf_prepare,
+ .buf_queue = jpu_buf_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .start_streaming = jpu_start_streaming,
+ .stop_streaming = jpu_stop_streaming,
+};
+
+static int jpu_queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct jpu_ctx *ctx = priv;
+ int ret;
+
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ src_vq->drv_priv = ctx;
+ src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ src_vq->ops = &jpu_qops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+ src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ src_vq->lock = &ctx->jpu->mutex;
+
+ ret = vb2_queue_init(src_vq);
+ if (ret)
+ return ret;
+
+ dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ dst_vq->drv_priv = ctx;
+ dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ dst_vq->ops = &jpu_qops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+ dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ dst_vq->lock = &ctx->jpu->mutex;
+
+ return vb2_queue_init(dst_vq);
+}
+
+/*
+ * ============================================================================
+ * Device file operations
+ * ============================================================================
+ */
+static int jpu_open(struct file *file)
+{
+ struct jpu *jpu = video_drvdata(file);
+ struct video_device *vfd = video_devdata(file);
+ struct jpu_ctx *ctx;
+ struct jpu_fmt *out_fmt, *cap_fmt;
+ int ret = 0;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ if (mutex_lock_interruptible(&jpu->mutex)) {
+ ret = -ERESTARTSYS;
+ goto free;
+ }
+
+ v4l2_fh_init(&ctx->fh, vfd);
+ ctx->fh.ctrl_handler = &ctx->ctrl_handler;
+ file->private_data = &ctx->fh;
+ v4l2_fh_add(&ctx->fh);
+
+ ctx->jpu = jpu;
+ if (vfd == jpu->vfd_encoder) {
+ ctx->mode = JPU_ENCODE;
+ out_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
+ JPU_FMT_TYPE_OUTPUT);
+ cap_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
+ JPU_FMT_TYPE_CAPTURE);
+
+ } else {
+ ctx->mode = JPU_DECODE;
+ out_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
+ JPU_FMT_TYPE_OUTPUT);
+ cap_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
+ JPU_FMT_TYPE_CAPTURE);
+ }
+
+ ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpu->m2m_dev, ctx, jpu_queue_init);
+ if (IS_ERR(ctx->fh.m2m_ctx)) {
+ ret = PTR_ERR(ctx->fh.m2m_ctx);
+ goto error;
+ }
+
+ ctx->out_q.fmt = out_fmt;
+ ctx->cap_q.fmt = cap_fmt;
+
+ ret = jpu_controls_create(ctx);
+ if (ret < 0)
+ goto error;
+
+ if (jpu->ref_count == 0) {
+ ret = clk_prepare_enable(jpu->clk);
+ if (ret < 0)
+ goto error;
+ }
+
+ jpu->ref_count++;
+
+ mutex_unlock(&jpu->mutex);
+ return 0;
+
+error:
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ mutex_unlock(&jpu->mutex);
+free:
+ kfree(ctx);
+ return ret;
+}
+
+static int jpu_release(struct file *file)
+{
+ struct jpu *jpu = video_drvdata(file);
+ struct jpu_ctx *ctx = fh_to_ctx(file->private_data);
+
+ mutex_lock(&jpu->mutex);
+ if (--jpu->ref_count == 0)
+ clk_disable_unprepare(jpu->clk);
+ v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
+ v4l2_ctrl_handler_free(&ctx->ctrl_handler);
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ kfree(ctx);
+ mutex_unlock(&jpu->mutex);
+
+ return 0;
+}
+
+static const struct v4l2_file_operations jpu_fops = {
+ .owner = THIS_MODULE,
+ .open = jpu_open,
+ .release = jpu_release,
+ .unlocked_ioctl = video_ioctl2,
+ .poll = v4l2_m2m_fop_poll,
+ .mmap = v4l2_m2m_fop_mmap,
+};
+
+/*
+ * ============================================================================
+ * mem2mem callbacks
+ * ============================================================================
+ */
+static void jpu_device_run(void *priv)
+{
+ struct jpu_ctx *ctx = priv;
+ struct jpu *jpu = ctx->jpu;
+ struct vb2_buffer *src_buf, *dst_buf;
+ unsigned long src_addr, dst_addr, flags;
+ void *dst_vaddr;
+ unsigned int w, h;
+
+ spin_lock_irqsave(&ctx->jpu->slock, flags);
+
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+ dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+ dst_vaddr = vb2_plane_vaddr(dst_buf, 0);
+
+ jpu_reset(jpu->regs);
+
+ if (ctx->mode == JPU_ENCODE) {
+ unsigned int redu, inft;
+
+ w = ctx->out_q.w;
+ h = ctx->out_q.h;
+
+ jpu_generate_hdr(&ctx->out_q, ctx->compr_quality, dst_vaddr);
+
+ if (ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_NV12) {
+ redu = JCMOD_REDU_420;
+ inft = JIFECNT_INFT_420;
+ } else {
+ redu = JCMOD_REDU_422;
+ inft = JIFECNT_INFT_422;
+ }
+
+ /* the only no marker mode works for encoding */
+ iowrite32(JCMOD_DSP_ENC | JCMOD_PCTR | redu | JCMOD_SOI_ENABLE |
+ JCMOD_MSKIP_ENABLE, jpu->regs + JCMOD);
+
+ iowrite32(JIFECNT_SWAP_WB | inft, jpu->regs + JIFECNT);
+ iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
+ iowrite32(INT(10), jpu->regs + JINTE);
+
+ /* Y and C components source addresses */
+ iowrite32(src_addr, jpu->regs + JIFESYA1);
+ iowrite32(src_addr + w * h, jpu->regs + JIFESCA1);
+
+ /* memory width */
+ iowrite32(w, jpu->regs + JIFESMW);
+
+ iowrite32((w >> 8) & JCSZ_MASK, jpu->regs + JCHSZU);
+ iowrite32(w & JCSZ_MASK, jpu->regs + JCHSZD);
+
+ iowrite32((h >> 8) & JCSZ_MASK, jpu->regs + JCVSZU);
+ iowrite32(h & JCSZ_MASK, jpu->regs + JCVSZD);
+
+ iowrite32(w, jpu->regs + JIFESHSZ);
+ iowrite32(h, jpu->regs + JIFESVSZ);
+
+ iowrite32(dst_addr + JPU_JPEG_HDR_SIZE, jpu->regs + JIFEDA1);
+
+ iowrite32(0 << JCQTN_SHIFT(1) | 1 << JCQTN_SHIFT(2) |
+ 1 << JCQTN_SHIFT(3), jpu->regs + JCQTN);
+
+ iowrite32(0 << JCHTN_AC_SHIFT(1) | 0 << JCHTN_DC_SHIFT(1) |
+ 1 << JCHTN_AC_SHIFT(2) | 1 << JCHTN_DC_SHIFT(2) |
+ 1 << JCHTN_AC_SHIFT(3) | 1 << JCHTN_DC_SHIFT(3),
+ jpu->regs + JCHTN);
+
+ jpu_set_qtbl(jpu->regs, ctx->compr_quality);
+ jpu_set_htbl(jpu->regs);
+ } else {
+ w = ctx->cap_q.w;
+ h = ctx->cap_q.h;
+
+ iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
+ iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
+ iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
+ iowrite32(INT(10) | INT(7) | INT(6) | INT(5),
+ jpu->regs + JINTE);
+ iowrite32(src_addr, jpu->regs + JIFDSA1);
+ iowrite32(w, jpu->regs + JIFDDMW);
+ iowrite32(dst_addr, jpu->regs + JIFDDYA1);
+ iowrite32(dst_addr + w * h, jpu->regs + JIFDDCA1);
+ }
+
+ iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
+ spin_unlock_irqrestore(&ctx->jpu->slock, flags);
+}
+
+static int jpu_job_ready(void *priv)
+{
+ struct jpu_ctx *ctx = priv;
+
+ if (ctx->mode == JPU_DECODE)
+ return ctx->hdr_parsed;
+ return 1;
+}
+
+static void jpu_job_abort(void *priv)
+{
+}
+
+static struct v4l2_m2m_ops jpu_m2m_ops = {
+ .device_run = jpu_device_run,
+ .job_ready = jpu_job_ready,
+ .job_abort = jpu_job_abort,
+};
+
+/*
+ * ============================================================================
+ * IRQ handler
+ * ============================================================================
+ */
+static irqreturn_t jpu_irq_handler(int irq, void *dev_id)
+{
+ struct jpu *jpu = dev_id;
+ struct jpu_ctx *curr_ctx;
+ struct vb2_buffer *src_buf, *dst_buf;
+ unsigned long payload_size = 0;
+ unsigned int int_status;
+ unsigned int error;
+
+ spin_lock(&jpu->slock);
+
+ int_status = ioread32(jpu->regs + JINTS);
+ jpu_int_clear(jpu->regs, int_status);
+
+ /*
+ * In any mode (decoding/encoding) we can additionaly get
+ * error status (5th bit)
+ * jpu operation complete status (6th bit)
+ */
+ if (!((ioread32(jpu->regs + JINTE) | INT(5) | INT(6)) & int_status)) {
+ spin_unlock(&jpu->slock);
+ return IRQ_NONE;
+ }
+
+ if (jpu->status == JPU_BUSY) {
+ if (int_status & INT(3))
+ jpu->status = JPU_OK;
+ if (int_status & INT(5))
+ jpu->status = JPU_ERR;
+ wake_up_interruptible(&jpu->wq);
+ goto handled;
+ }
+
+ if ((int_status & INT(6)) && !(int_status & INT(10)))
+ goto handled;
+
+ curr_ctx = v4l2_m2m_get_curr_priv(jpu->m2m_dev);
+
+ src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
+
+ if (int_status & INT(10)) {
+ if (curr_ctx->mode == JPU_ENCODE) {
+ payload_size = ioread32(jpu->regs + JCDTCU) << 16 |
+ ioread32(jpu->regs + JCDTCM) << 8 |
+ ioread32(jpu->regs + JCDTCD);
+ vb2_set_plane_payload(dst_buf, 0,
+ payload_size + JPU_JPEG_HDR_SIZE);
+ }
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
+ } else if (int_status & INT(5)) {
+ error = ioread32(jpu->regs + JCDERR);
+ dev_err(jpu->dev, "error 0x%2X\n", error);
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
+ }
+
+ v4l2_m2m_job_finish(jpu->m2m_dev, curr_ctx->fh.m2m_ctx);
+
+handled:
+ spin_unlock(&jpu->slock);
+ return IRQ_HANDLED;
+}
+
+/*
+ * ============================================================================
+ * Driver basic infrastructure
+ * ============================================================================
+ */
+static const struct of_device_id jpu_dt_ids[] = {
+ { .compatible = "renesas,jpu-r8a7790" },
+ { .compatible = "renesas,jpu-r8a7791" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, jpu_dt_ids);
+
+static int jpu_probe(struct platform_device *pdev)
+{
+ struct jpu *jpu;
+ struct resource *res;
+ int ret;
+
+ /* JPEG IP abstraction struct */
+ jpu = devm_kzalloc(&pdev->dev, sizeof(struct jpu), GFP_KERNEL);
+ if (!jpu)
+ return -ENOMEM;
+
+ mutex_init(&jpu->mutex);
+ spin_lock_init(&jpu->slock);
+ jpu->dev = &pdev->dev;
+
+ /* memory-mapped registers */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ jpu->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(jpu->regs))
+ return PTR_ERR(jpu->regs);
+
+ /* interrupt service routine registration */
+ jpu->irq = ret = platform_get_irq(pdev, 0);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "cannot find IRQ\n");
+ return ret;
+ }
+
+ ret = devm_request_irq(&pdev->dev, jpu->irq, jpu_irq_handler, 0,
+ dev_name(&pdev->dev), jpu);
+ if (ret) {
+ dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpu->irq);
+ return ret;
+ }
+
+ /* clocks */
+ jpu->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(jpu->clk)) {
+ dev_err(&pdev->dev, "cannot get clock\n");
+ ret = PTR_ERR(jpu->clk);
+ return ret;
+ }
+
+ /* v4l2 device */
+ ret = v4l2_device_register(&pdev->dev, &jpu->v4l2_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register v4l2 device\n");
+ goto clk_get_rollback;
+ }
+
+ /* mem2mem device */
+ jpu->m2m_dev = v4l2_m2m_init(&jpu_m2m_ops);
+ if (IS_ERR(jpu->m2m_dev)) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to init mem2mem device\n");
+ ret = PTR_ERR(jpu->m2m_dev);
+ goto device_register_rollback;
+ }
+
+ jpu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
+ if (IS_ERR(jpu->alloc_ctx)) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to init memory allocator\n");
+ ret = PTR_ERR(jpu->alloc_ctx);
+ goto m2m_init_rollback;
+ }
+
+ /* JPEG encoder /dev/videoX node */
+ jpu->vfd_encoder = video_device_alloc();
+ if (!jpu->vfd_encoder) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
+ ret = -ENOMEM;
+ goto vb2_allocator_rollback;
+ }
+ strlcpy(jpu->vfd_encoder->name, JPU_M2M_NAME,
+ sizeof(jpu->vfd_encoder->name));
+ jpu->vfd_encoder->fops = &jpu_fops;
+ jpu->vfd_encoder->ioctl_ops = &jpu_ioctl_ops;
+ jpu->vfd_encoder->minor = -1;
+ jpu->vfd_encoder->release = video_device_release;
+ jpu->vfd_encoder->lock = &jpu->mutex;
+ jpu->vfd_encoder->v4l2_dev = &jpu->v4l2_dev;
+ jpu->vfd_encoder->vfl_dir = VFL_DIR_M2M;
+
+ ret = video_register_device(jpu->vfd_encoder, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
+ goto enc_vdev_alloc_rollback;
+ }
+
+ video_set_drvdata(jpu->vfd_encoder, jpu);
+ v4l2_info(&jpu->v4l2_dev, "encoder device registered as /dev/video%d\n",
+ jpu->vfd_encoder->num);
+
+ /* JPEG decoder /dev/videoX node */
+ jpu->vfd_decoder = video_device_alloc();
+ if (!jpu->vfd_decoder) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
+ ret = -ENOMEM;
+ goto enc_vdev_register_rollback;
+ }
+ strlcpy(jpu->vfd_decoder->name, JPU_M2M_NAME,
+ sizeof(jpu->vfd_decoder->name));
+ jpu->vfd_decoder->fops = &jpu_fops;
+ jpu->vfd_decoder->ioctl_ops = &jpu_ioctl_ops;
+ jpu->vfd_decoder->minor = -1;
+ jpu->vfd_decoder->release = video_device_release;
+ jpu->vfd_decoder->lock = &jpu->mutex;
+ jpu->vfd_decoder->v4l2_dev = &jpu->v4l2_dev;
+ jpu->vfd_decoder->vfl_dir = VFL_DIR_M2M;
+
+ ret = video_register_device(jpu->vfd_decoder, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
+ goto dec_vdev_alloc_rollback;
+ }
+
+ video_set_drvdata(jpu->vfd_decoder, jpu);
+ v4l2_info(&jpu->v4l2_dev, "decoder device registered as /dev/video%d\n",
+ jpu->vfd_decoder->num);
+
+ /* final statements & power management */
+ platform_set_drvdata(pdev, jpu);
+
+ init_waitqueue_head(&jpu->wq);
+
+ v4l2_info(&jpu->v4l2_dev, "Renesas JPEG codec\n");
+
+ return 0;
+
+dec_vdev_alloc_rollback:
+ video_device_release(jpu->vfd_decoder);
+
+enc_vdev_register_rollback:
+ video_unregister_device(jpu->vfd_encoder);
+
+enc_vdev_alloc_rollback:
+ video_device_release(jpu->vfd_encoder);
+
+vb2_allocator_rollback:
+ vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
+
+m2m_init_rollback:
+ v4l2_m2m_release(jpu->m2m_dev);
+
+device_register_rollback:
+ v4l2_device_unregister(&jpu->v4l2_dev);
+
+clk_get_rollback:
+ clk_disable_unprepare(jpu->clk);
+
+ return ret;
+}
+
+static int jpu_remove(struct platform_device *pdev)
+{
+ struct jpu *jpu = platform_get_drvdata(pdev);
+
+ video_unregister_device(jpu->vfd_decoder);
+ video_device_release(jpu->vfd_decoder);
+ video_unregister_device(jpu->vfd_encoder);
+ video_device_release(jpu->vfd_encoder);
+ vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
+ v4l2_m2m_release(jpu->m2m_dev);
+ v4l2_device_unregister(&jpu->v4l2_dev);
+ clk_disable_unprepare(jpu->clk);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int jpu_suspend(struct device *dev)
+{
+ struct jpu *jpu = dev_get_drvdata(dev);
+
+ if (jpu->ref_count == 0)
+ return 0;
+
+ clk_disable_unprepare(jpu->clk);
+
+ return 0;
+}
+
+static int jpu_resume(struct device *dev)
+{
+ struct jpu *jpu = dev_get_drvdata(dev);
+
+ if (jpu->ref_count)
+ return 0;
+
+ clk_prepare_enable(jpu->clk);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops jpu_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(jpu_suspend, jpu_resume)
+};
+
+static struct platform_driver jpu_driver = {
+ .probe = jpu_probe,
+ .remove = jpu_remove,
+ .driver = {
+ .of_match_table = jpu_dt_ids,
+ .owner = THIS_MODULE,
+ .name = JPU_M2M_NAME,
+ .pm = &jpu_pm_ops,
+ },
+};
+
+module_platform_driver(jpu_driver);
+
+MODULE_ALIAS("jpu");
+MODULE_AUTHOR("Mikhail Ulianov <mikhail.ulyanov@cogentembedded.com>");
+MODULE_DESCRIPTION("Renesas JPEG codec driver");
+MODULE_LICENSE("GPL v2");
--
2.1.0.rc1
^ permalink raw reply related [flat|nested] 78+ messages in thread* Re: [PATCH 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-19 12:50 ` Mikhail Ulyanov
@ 2014-08-19 13:37 ` Hans Verkuil
-1 siblings, 0 replies; 78+ messages in thread
From: Hans Verkuil @ 2014-08-19 13:37 UTC (permalink / raw)
To: Mikhail Ulyanov, m.chehab, horms, magnus.damm, robh+dt,
pawel.moll, mark.rutland
Cc: laurent.pinchart, linux-sh, linux-media, devicetree
Hi Mikhail,
I did a quick scan over the source code and I noticed a few things that aren't
right. The easiest for you is probably to run the v4l2-compliance tool over
your driver and it should tell you what needs to be fixed. The things I
noticed are: querycap doesn't fill in bus_info (should be 'platform:<foo>')
and device_caps, the vid_cap try_fmt fails on a wrong field setting, instead
it should just set it.
I also have some doubts about g_selection, but I need to look at that again
when I have more time next week. It does look like it is not properly
separating the capture and output streams. I would expect g_selection to
return different things for capture and output. Note that v4l2-compliance
doesn't yet check the selection API, so it won't help you there.
Regards,
Hans
On 08/19/2014 12:50 PM, Mikhail Ulyanov wrote:
> Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
> ---
> drivers/media/platform/Kconfig | 11 +
> drivers/media/platform/Makefile | 2 +
> drivers/media/platform/jpu.c | 1630 +++++++++++++++++++++++++++++++++++++++
> 3 files changed, 1646 insertions(+)
> create mode 100644 drivers/media/platform/jpu.c
>
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index 6d86646..1b8c846 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
> To compile this driver as a module, choose M here: the module
> will be called vsp1.
>
> +config VIDEO_RENESAS_JPU
> + tristate "Renesas JPEG Processing Unit"
> + depends on VIDEO_DEV && VIDEO_V4L2
> + select VIDEOBUF2_DMA_CONTIG
> + select V4L2_MEM2MEM_DEV
> + ---help---
> + This is a V4L2 driver for the Renesas JPEG Processing Unit.
> +
> + To compile this driver as a module, choose M here: the module
> + will be called jpu.
> +
> config VIDEO_TI_VPE
> tristate "TI VPE (Video Processing Engine) driver"
> depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX
> diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
> index e5269da..e438534 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) += soc_camera/
>
> obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
>
> +obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
> +
> obj-y += davinci/
>
> obj-$(CONFIG_ARCH_OMAP) += omap/
> diff --git a/drivers/media/platform/jpu.c b/drivers/media/platform/jpu.c
> new file mode 100644
> index 0000000..8630baf
> --- /dev/null
> +++ b/drivers/media/platform/jpu.c
> @@ -0,0 +1,1630 @@
> +/*
> + * Author: Mikhail Ulyanov <source@cogentembedded.com>
> + * Copyright (C) 2014 Cogent Embedded, Inc.
> + * Copyright (C) 2014 Renesas Electronics Corporation
> + *
> + * This is based on the drivers/media/platform/s5p-jpu driver by
> + * Andrzej Pietrasiewicz and Jacek Anaszewski.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/err.h>
> +#include <linux/gfp.h>
> +#include <linux/interrupt.h>
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <linux/spinlock.h>
> +#include <linux/string.h>
> +#include <linux/videodev2.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-fh.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/videobuf2-core.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +
> +#define JPU_M2M_NAME "jpu"
> +
> +#define JPU_WIDTH_MIN 16
> +#define JPU_HEIGHT_MIN 16
> +#define JPU_WIDTH_MAX 4096
> +#define JPU_HEIGHT_MAX 4096
> +
> +#define JPU_ENCODE 0
> +#define JPU_DECODE 1
> +
> +/* Flags that indicate a format can be used for capture/output */
> +#define JPU_FMT_TYPE_OUTPUT 0
> +#define JPU_FMT_TYPE_CAPTURE 1
> +#define JPU_ENC_CAPTURE (1 << 0)
> +#define JPU_ENC_OUTPUT (1 << 1)
> +#define JPU_DEC_CAPTURE (1 << 2)
> +#define JPU_DEC_OUTPUT (1 << 3)
> +
> +/*
> + * JPEG registers and bits
> + */
> +
> +/* JPEG code mode register */
> +#define JCMOD 0x00
> +#define JCMOD_SOI_DISABLE (1 << 8)
> +#define JCMOD_SOI_ENABLE (0 << 8)
> +#define JCMOD_PCTR (1 << 7)
> +#define JCMOD_MSKIP_DISABLE (0 << 5)
> +#define JCMOD_MSKIP_ENABLE (1 << 5)
> +#define JCMOD_DSP_ENC (0 << 3)
> +#define JCMOD_DSP_DEC (1 << 3)
> +#define JCMOD_REDU (7 << 0)
> +#define JCMOD_REDU_422 (1 << 0)
> +#define JCMOD_REDU_420 (2 << 0)
> +
> +/* JPEG code command register */
> +#define JCCMD 0x04
> +#define JCCMD_SRST (1 << 12)
> +#define JCCMD_BRST (1 << 7)
> +#define JCCMD_JEND (1 << 2)
> +#define JCCMD_JSRT (1 << 0)
> +
> +/* JPEG code quantanization table number register */
> +#define JCQTN 0x0C
> +#define JCQTN_SHIFT(t) (((t) - 1) << 1)
> +
> +/* JPEG code Huffman table number register */
> +#define JCHTN 0x10
> +#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
> +#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
> +
> +#define JCDRIU 0x14 /* JPEG code DRI upper register */
> +#define JCDRIL 0x18 /* JPEG code DRI lower register */
> +#define JCVSZU 0x1C /* JPEG code vertical size upper register */
> +#define JCVSZD 0x20 /* JPEG code vertical size lower register */
> +#define JCHSZU 0x24 /* JPEG code horizontal size upper register */
> +#define JCHSZD 0x28 /* JPEG code horizontal size lower register */
> +#define JCSZ_MASK 0xff /* JPEG code h/v size register contains only 1 byte*/
> +
> +#define JCDTCU 0x2C /* JPEG code data count upper register */
> +#define JCDTCM 0x30 /* JPEG code data count middle register */
> +#define JCDTCD 0x34 /* JPEG code data count lower register */
> +
> +/* JPEG interrupt enable register */
> +#define JINTE 0x38
> +
> +/* JPEG interrupt status register */
> +#define JINTS 0x3C
> +#define JINTS_MASK 0x7c68
> +
> +#define INT(n) (1 << n)
> +
> +#define JCDERR 0x40 /* JPEG code decode error register */
> +
> +/* JPEG interface encoding */
> +#define JIFECNT 0x70
> +#define JIFECNT_INFT_422 0
> +#define JIFECNT_INFT_420 1
> +#define JIFECNT_SWAP_WB (0x3 << 4)
> +
> +/* JPEG interface encode source Y address register 1 */
> +#define JIFESYA1 0x74
> +/* JPEG interface encode source C address register 1 */
> +#define JIFESCA1 0x78
> +/* JPEG interface encode source Y address register 2 */
> +#define JIFESYA2 0x7C
> +/* JPEG interface encode source C address register 2 */
> +#define JIFESCA2 0x80
> +/* JPEG interface encode source memory width register */
> +#define JIFESMW 0x84
> +/* JPEG interface encode source vertical size register */
> +#define JIFESVSZ 0x88
> +/* JPEG interface encode source horizontal size register */
> +#define JIFESHSZ 0x8C
> +/* JPEG interface encode destination address register 1 */
> +#define JIFEDA1 0x90
> +/* JPEG interface encode destination address register 2 */
> +#define JIFEDA2 0x94
> +
> +/* JPEG decoding control register */
> +#define JIFDCNT 0xA0
> +#define JIFDCNT_SWAP (3 << 1)
> +#define JIFDCNT_SWAP_NO (0 << 1)
> +#define JIFDCNT_SWAP_BYTE (1 << 1)
> +#define JIFDCNT_SWAP_WORD (2 << 1)
> +#define JIFDCNT_SWAP_WB (3 << 1)
> +
> +/* JPEG decode source address register 1 */
> +#define JIFDSA1 0xA4
> +/* JPEG decode source address register 2 */
> +#define JIFDSA2 0xA8
> +/* JPEG decode data reload size register */
> +#define JIFDDRSZ 0xAC
> +/* JPEG decode data destination memory width register */
> +#define JIFDDMW 0xB0
> +/* JPEG decode data destination vertical size register */
> +#define JIFDDVSZ 0xB4
> +/* JPEG decode data destination horizontal size register */
> +#define JIFDDHSZ 0xB8
> +/* JPEG decode data destination Y address register 1 */
> +#define JIFDDYA1 0xBC
> +/* JPEG decode data destination C address register 1 */
> +#define JIFDDCA1 0xC0
> +/* JPEG decode data destination Y address register 2 */
> +#define JIFDDYA2 0xC4
> +/* JPEG decode data destination C address register 2 */
> +#define JIFDDCA2 0xC8
> +
> +/* JPEG code quantization tables registers */
> +#define JCQTBL(n) (0x10000 + (n) * 0x40)
> +
> +/* JPEG code Huffman table DC registers */
> +#define JCHTBD(n) (0x10100 + (n) * 0x100)
> +
> +/* JPEG code Huffman table AC registers */
> +#define JCHTBA(n) (0x10120 + (n) * 0x100)
> +
> +#define JPU_JPEG_HDR_SIZE 0x250
> +
> +enum jpu_status {
> + JPU_OK,
> + JPU_BUSY,
> + JPU_ERR
> +};
> +
> +/**
> + * struct jpu - JPEG IP abstraction
> + * @mutex: the mutex protecting this structure
> + * @slock: spinlock protecting the device contexts
> + * @v4l2_dev: v4l2 device for mem2mem mode
> + * @vfd_encoder: video device node for encoder mem2mem mode
> + * @vfd_decoder: video device node for decoder mem2mem mode
> + * @m2m_dev: v4l2 mem2mem device data
> + * @regs: JPEG IP registers mapping
> + * @irq: JPEG IP irq
> + * @clk: JPEG IP clock
> + * @dev: JPEG IP struct device
> + * @alloc_ctx: videobuf2 memory allocator's context
> + * @bounds: platform specific IP limitations
> + * @wq: waitqueue for header parsing handling
> + * @statatus: current driver state variable
> + * @ref_counter: reference counter
> + */
> +struct jpu {
> + struct mutex mutex;
> + spinlock_t slock;
> +
> + struct v4l2_device v4l2_dev;
> + struct video_device *vfd_encoder;
> + struct video_device *vfd_decoder;
> + struct v4l2_m2m_dev *m2m_dev;
> +
> + void __iomem *regs;
> + unsigned int irq;
> + struct clk *clk;
> + struct device *dev;
> + void *alloc_ctx;
> + struct jpu_bounds *bounds;
> + wait_queue_head_t wq;
> + enum jpu_status status;
> + int ref_count;
> +};
> +
> +/**
> + * struct jpu_fmt - driver's internal format data
> + * @name: format descritpion
> + * @fourcc: the fourcc code, 0 if not applicable
> + * @depth: number of bits per pixel
> + * @h_align: horizontal alignment order (align to 2^h_align)
> + * @v_align: vertical alignment order (align to 2^v_align)
> + * @types: types of queue this format is applicable to
> + */
> +struct jpu_fmt {
> + char *name;
> + u32 fourcc;
> + int depth;
> + int h_align;
> + int v_align;
> + u32 types;
> +};
> +
> +/**
> + * jpu_q_data - parameters of one queue
> + * @fmt: driver-specific format of this queue
> + * @w: image width
> + * @h: image height
> + * @size: image buffer size in bytes
> + */
> +struct jpu_q_data {
> + struct jpu_fmt *fmt;
> + u32 w;
> + u32 h;
> + u32 size;
> +};
> +
> +/**
> + * jpu_ctx - the device context data
> + * @jpu: JPEG IP device for this context
> + * @mode: compression (encode) operation or decompression (decode)
> + * @compr_quality: destination image quality in compression (encode) mode
> + * @out_q: source (output) queue information
> + * @fh: file handler;
> + * @hdr_parsed: set if header has been parsed during decompression
> + * @ctrl_handler: controls handler
> + */
> +struct jpu_ctx {
> + struct jpu *jpu;
> + unsigned int mode;
> + unsigned short compr_quality;
> + struct jpu_q_data out_q;
> + struct jpu_q_data cap_q;
> + struct v4l2_fh fh;
> + bool hdr_parsed;
> + struct v4l2_ctrl_handler ctrl_handler;
> +};
> +
> +static struct jpu_fmt jpu_formats[] = {
> + {
> + .name = "JPEG JFIF",
> + .fourcc = V4L2_PIX_FMT_JPEG,
> + .types = JPU_ENC_CAPTURE | JPU_DEC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:2 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .depth = 16,
> + .h_align = 3,
> + .v_align = 3,
> + .types = JPU_ENC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:0 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .depth = 12,
> + .h_align = 3,
> + .v_align = 3,
> + .types = JPU_ENC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:2 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .depth = 16,
> + .h_align = 2,
> + .v_align = 2,
> + .types = JPU_DEC_CAPTURE,
> + },
> + {
> + .name = "YUV 4:2:0 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .depth = 12,
> + .h_align = 2,
> + .v_align = 2,
> + .types = JPU_DEC_CAPTURE,
> + },
> +};
> +
> +static const u8 zigzag[] = {
> + 0x03, 0x02, 0x0b, 0x13, 0x0a, 0x01, 0x00, 0x09,
> + 0x12, 0x1b, 0x23, 0x1a, 0x11, 0x08, 0x07, 0x06,
> + 0x0f, 0x10, 0x19, 0x22, 0x2b, 0x33, 0x2a, 0x21,
> + 0x18, 0x17, 0x0e, 0x05, 0x04, 0x0d, 0x16, 0x1f,
> + 0x20, 0x29, 0x32, 0x3b, 0x3a, 0x31, 0x28, 0x27,
> + 0x1e, 0x15, 0x0e, 0x14, 0x10, 0x26, 0x2f, 0x30,
> + 0x39, 0x38, 0x37, 0x2e, 0x25, 0x1c, 0x24, 0x2b,
> + 0x36, 0x3f, 0x3e, 0x35, 0x2c, 0x34, 0x3d, 0x3c
> +};
> +
> +static unsigned char hdr_blob0[] = {
> + 0xff, 0xd8, 0xff, 0xfe, 0x00, 0x0e, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x84
> +};
> +
> +static unsigned char hdr_blob1[] = {
> + 0xff, 0xc0, 0x00, 0x11, 0x08
> +};
> +
> +static unsigned char hdr_blob2[] = {
> + 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff,
> + 0xc4, 0x01, 0xa2
> +};
> +
> +static const unsigned int qtbl_lum[2][16] = {
> + {
> + 0x14401927, 0x322e3e44, 0x10121726, 0x26354144,
> + 0x19171f26, 0x35414444, 0x27262635, 0x41444444,
> + 0x32263541, 0x44444444, 0x2e354144, 0x44444444,
> + 0x3e414444, 0x44444444, 0x44444444, 0x44444444
> + },
> + {
> + 0x08060608, 0x0c0e1011, 0x06060608, 0x0a0d0c0f,
> + 0x06060708, 0x0d0e1218, 0x0808080e, 0x0d131823,
> + 0x0c0a0d0d, 0x141a2227, 0x0e0d0e13, 0x1a222727,
> + 0x100c1318, 0x22272727, 0x110f1823, 0x27272727
> + }
> +};
> +
> +static const unsigned int qtbl_chr[2][16] = {
> + {
> + 0x15192026, 0x36444444, 0x191c1826, 0x36444444,
> + 0x2018202b, 0x42444444, 0x26262b35, 0x44444444,
> + 0x36424444, 0x44444444, 0x44444444, 0x44444444,
> + 0x44444444, 0x44444444, 0x44444444, 0x44444444
> + },
> + {
> + 0x0908090b, 0x0e111318, 0x080a090b, 0x0e0d1116,
> + 0x09090d0e, 0x0d0f171a, 0x0b0b0e0e, 0x0f141a21,
> + 0x0e0e0d0f, 0x14182127, 0x110d0f14, 0x18202727,
> + 0x1311171a, 0x21272727, 0x18161a21, 0x27272727
> + }
> +};
> +
> +static const unsigned int hdctbl_lum[7] = {
> + 0x00010501, 0x01010101, 0x01000000, 0x00000000,
> + 0x00010203, 0x04050607, 0x08090a0b
> +};
> +
> +static const unsigned int hdctbl_chr[7] = {
> + 0x00030101, 0x01010101, 0x01010100, 0x00000000,
> + 0x00010203, 0x04050607, 0x08090a0b
> +};
> +
> +static const unsigned int hactbl_lum[45] = {
> + 0x00020103, 0x03020403, 0x05050404, 0x0000017d,
> + 0x01020300, 0x04110512, 0x21314106, 0x13516107,
> + 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
> + 0x24336272, 0x82090a16, 0x1718191a, 0x25262728,
> + 0x292a3435, 0x36373839, 0x3a434445, 0x46474849,
> + 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
> + 0x6a737475, 0x76777879, 0x7a838485, 0x86878889,
> + 0x8a929394, 0x95969798, 0x999aa2a3, 0xa4a5a6a7,
> + 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
> + 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2,
> + 0xe3e4e5e6, 0xe7e8e9ea, 0xf1f2f3f4, 0xf5f6f7f8,
> + 0xf9fa0000
> +};
> +
> +static const unsigned int hactbl_chr[45] = {
> + 0x00020102, 0x04040304, 0x07050404, 0x00010277,
> + 0x00010203, 0x11040521, 0x31061241, 0x51076171,
> + 0x13223281, 0x08144291, 0xa1b1c109, 0x233352f0,
> + 0x156372d1, 0x0a162434, 0xe125f117, 0x18191a26,
> + 0x2728292a, 0x35363738, 0x393a4344, 0x45464748,
> + 0x494a5354, 0x55565758, 0x595a6364, 0x65666768,
> + 0x696a7374, 0x75767778, 0x797a8283, 0x84858687,
> + 0x88898a92, 0x93949596, 0x9798999a, 0xa2a3a4a5,
> + 0xa6a7a8a9, 0xaab2b3b4, 0xb5b6b7b8, 0xb9bac2c3,
> + 0xc4c5c6c7, 0xc8c9cad2, 0xd3d4d5d6, 0xd7d8d9da,
> + 0xe2e3e4e5, 0xe6e7e8e9, 0xeaf2f3f4, 0xf5f6f7f8,
> + 0xf9fa0000
> +};
> +
> +static struct jpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
> +{
> + return container_of(c->handler, struct jpu_ctx, ctrl_handler);
> +}
> +
> +static struct jpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
> +{
> + return container_of(fh, struct jpu_ctx, fh);
> +}
> +
> +static void jpu_set_tbl(void __iomem *regs, const unsigned int *tbl,
> + int len) {
> + unsigned int i;
> +
> + for (i = 0; i < len; i++)
> + iowrite32(tbl[i], regs + (i << 2));
> +}
> +
> +static void jpu_set_qtbl(void __iomem *regs, int quality)
> +{
> + jpu_set_tbl(regs + JCQTBL(0), qtbl_lum[quality],
> + ARRAY_SIZE(qtbl_lum[quality]));
> + jpu_set_tbl(regs + JCQTBL(1), qtbl_chr[quality],
> + ARRAY_SIZE(qtbl_chr[quality]));
> +}
> +
> +static void jpu_set_htbl(void __iomem *regs)
> +{
> + jpu_set_tbl(regs + JCHTBD(0), hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
> + jpu_set_tbl(regs + JCHTBD(1), hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
> + jpu_set_tbl(regs + JCHTBA(0), hactbl_lum, ARRAY_SIZE(hactbl_lum));
> + jpu_set_tbl(regs + JCHTBA(1), hactbl_chr, ARRAY_SIZE(hactbl_chr));
> +}
> +
> +static void jpu_int_clear(void __iomem *regs, unsigned int int_status)
> +{
> + iowrite32(~int_status & JINTS_MASK, regs + JINTS);
> +
> + if (int_status & (INT(6) | INT(5) | INT(3)))
> + iowrite32(JCCMD_JEND, regs + JCCMD);
> +}
> +
> +static void jpu_reset(void __iomem *regs)
> +{
> + iowrite32(JCCMD_SRST, regs + JCCMD);
> + while ((ioread32(regs + JCCMD) & JCCMD_SRST) != 0)
> + cpu_relax();
> +}
> +
> +/*
> + * ======================================
> + * video ioctl operations
> + * ======================================
> + */
> +static void put_byte(unsigned long *p, u8 v)
> +{
> + u8 *addr = (u8 *)*p;
> +
> + *addr = v;
> + (*p)++;
> +}
> +
> +static void put_short_be(unsigned long *p, u16 v)
> +{
> + u16 *addr = (u16 *)*p;
> +
> + *addr = cpu_to_be16(v);
> + *p += 2;
> +}
> +
> +static void put_word_be(unsigned long *p, u32 v)
> +{
> + u32 *addr = (u32 *)*p;
> +
> + *addr = cpu_to_be32(v);
> + *p += 4;
> +}
> +
> +static void put_blob_byte(unsigned long *p, const unsigned char *blob,
> + unsigned int len)
> +{
> + int i;
> +
> + for (i = 0; i < len; i++)
> + put_byte(p, blob[i]);
> +}
> +
> +static void put_qtbl(unsigned long *p, unsigned char id,
> + const unsigned int *qtbl)
> +{
> + int i;
> +
> + put_byte(p, id);
> + for (i = 0; i < ARRAY_SIZE(zigzag); i++)
> + put_byte(p, *((u8 *)qtbl + zigzag[i]));
> +}
> +
> +static void put_htbl(unsigned long *p, unsigned char tc,
> + const unsigned int *htbl, unsigned int len)
> +{
> + int i;
> +
> + put_byte(p, tc);
> + for (i = 0; i < len; i++)
> + put_word_be(p, htbl[i]);
> +}
> +
> +static void jpu_generate_hdr(struct jpu_q_data *q, int quality, void *buffer)
> +{
> + /* SOI(2) - DQT(134 / 2 tables) - SOF0(19) - DHT(420 / 2 tables) */
> + unsigned long p = (unsigned long)buffer;
> +
> + put_blob_byte(&p, hdr_blob0, ARRAY_SIZE(hdr_blob0));
> +
> + put_qtbl(&p, 0x00, qtbl_lum[quality]);
> + put_qtbl(&p, 0x01, qtbl_chr[quality]);
> +
> + put_blob_byte(&p, hdr_blob1, ARRAY_SIZE(hdr_blob1));
> +
> + put_short_be(&p, q->h);
> + put_short_be(&p, q->w);
> +
> + put_byte(&p, 0x03);
> + put_byte(&p, 0x01);
> +
> + if (q->fmt->fourcc = V4L2_PIX_FMT_NV16)
> + put_byte(&p, 0x21);
> + else
> + put_byte(&p, 0x22);
> +
> + put_blob_byte(&p, hdr_blob2, ARRAY_SIZE(hdr_blob2));
> +
> + put_htbl(&p, 0x00, hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
> + put_htbl(&p, 0x10, hactbl_lum, ARRAY_SIZE(hactbl_lum));
> + p -= 2;
> +
> + put_htbl(&p, 0x01, hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
> + put_htbl(&p, 0x11, hactbl_chr, ARRAY_SIZE(hactbl_chr));
> +}
> +
> +static int jpu_querycap(struct file *file, void *priv,
> + struct v4l2_capability *cap)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode = JPU_ENCODE) {
> + strlcpy(cap->driver, JPU_M2M_NAME " encoder",
> + sizeof(cap->driver));
> + strlcpy(cap->card, JPU_M2M_NAME " encoder",
> + sizeof(cap->card));
> + } else {
> + strlcpy(cap->driver, JPU_M2M_NAME " decoder",
> + sizeof(cap->driver));
> + strlcpy(cap->card, JPU_M2M_NAME " decoder",
> + sizeof(cap->card));
> + }
> + cap->bus_info[0] = 0;
> + cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M |
> + V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT;
> + return 0;
> +}
> +
> +static struct jpu_fmt *jpu_find_format(unsigned int mode, u32 pixelformat,
> + unsigned int fmt_type)
> +{
> + unsigned int k, fmt_flag;
> +
> + if (mode = JPU_ENCODE)
> + fmt_flag = (fmt_type = JPU_FMT_TYPE_OUTPUT) ? JPU_ENC_OUTPUT :
> + JPU_ENC_CAPTURE;
> + else
> + fmt_flag = (fmt_type = JPU_FMT_TYPE_OUTPUT) ? JPU_DEC_OUTPUT :
> + JPU_DEC_CAPTURE;
> +
> + for (k = 0; k < ARRAY_SIZE(jpu_formats); k++) {
> + struct jpu_fmt *fmt = &jpu_formats[k];
> +
> + if (fmt->fourcc = pixelformat &&
> + fmt->types & fmt_flag) {
> + return fmt;
> + }
> + }
> +
> + return NULL;
> +}
> +
> +static int jpu_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
> +{
> + int i, num = 0;
> +
> + for (i = 0; i < ARRAY_SIZE(jpu_formats); ++i) {
> + if (jpu_formats[i].types & type) {
> + /* index-th format of type type found ? */
> + if (num = f->index)
> + break;
> + /*
> + * Correct type but haven't reached our index yet,
> + * just increment per-type index
> + */
> + ++num;
> + }
> + }
> +
> + /* Format not found */
> + if (i >= ARRAY_SIZE(jpu_formats))
> + return -EINVAL;
> +
> + strlcpy(f->description, jpu_formats[i].name, sizeof(f->description));
> + f->pixelformat = jpu_formats[i].fourcc;
> +
> + return 0;
> +}
> +
> +static int jpu_enum_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode = JPU_ENCODE)
> + return jpu_enum_fmt(f, JPU_ENC_CAPTURE);
> +
> + return jpu_enum_fmt(f, JPU_DEC_CAPTURE);
> +}
> +
> +static int jpu_enum_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode = JPU_ENCODE)
> + return jpu_enum_fmt(f, JPU_ENC_OUTPUT);
> +
> + return jpu_enum_fmt(f, JPU_DEC_OUTPUT);
> +}
> +
> +static struct jpu_q_data *jpu_get_q_data(struct jpu_ctx *ctx,
> + enum v4l2_buf_type type)
> +{
> + switch (type) {
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + return &ctx->out_q;
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + return &ctx->cap_q;
> + default:
> + BUG();
> + }
> +}
> +
> +static int jpu_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
> +{
> + struct vb2_queue *vq;
> + struct jpu_q_data *q_data;
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (!vq)
> + return -EINVAL;
> +
> + if (f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE &&
> + ctx->mode = JPU_DECODE && !ctx->hdr_parsed)
> + return -EINVAL;
> +
> + q_data = jpu_get_q_data(ctx, f->type);
> +
> + pix->width = q_data->w;
> + pix->height = q_data->h;
> + pix->field = V4L2_FIELD_NONE;
> + pix->pixelformat = q_data->fmt->fourcc;
> + pix->bytesperline = 0;
> + if (pix->pixelformat != V4L2_PIX_FMT_JPEG)
> + pix->bytesperline = q_data->w;
> + pix->sizeimage = q_data->size;
> +
> + return 0;
> +}
> +
> +
> +static void jpu_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
> + unsigned int walign, u32 *h,
> + unsigned int hmin, unsigned int hmax,
> + unsigned int halign)
> +{
> + int width, height, w_step, h_step;
> +
> + width = *w;
> + height = *h;
> +
> + w_step = 1 << walign;
> + h_step = 1 << halign;
> + v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 3);
> +
> + if (*w < width && *w + w_step < wmax)
> + *w += w_step;
> + if (*h < height && *h + h_step < hmax)
> + *h += h_step;
> +}
> +
> +static int jpu_vidioc_try_fmt(struct v4l2_format *f, struct jpu_fmt *fmt,
> + struct jpu_ctx *ctx)
> +{
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> +
> + if (pix->field = V4L2_FIELD_ANY)
> + pix->field = V4L2_FIELD_NONE;
> + else if (pix->field != V4L2_FIELD_NONE)
> + return -EINVAL;
> +
> + /*
> + * V4L2 specification suggests the driver corrects the format struct
> + * if any of the dimensions is unsupported
> + */
> + jpu_bound_align_image(&pix->width, JPU_WIDTH_MIN, JPU_WIDTH_MAX,
> + fmt->h_align, &pix->height, JPU_HEIGHT_MIN,
> + JPU_HEIGHT_MAX, fmt->v_align);
> +
> + if (fmt->fourcc = V4L2_PIX_FMT_JPEG) {
> + if (pix->sizeimage <= 0)
> + pix->sizeimage = PAGE_SIZE;
> + pix->bytesperline = 0;
> + } else {
> + u32 bpl = pix->bytesperline;
> +
> + if (bpl < pix->width)
> + bpl = pix->width;
> +
> + pix->bytesperline = bpl;
> + pix->sizeimage = (pix->width * pix->height * fmt->depth) >> 3;
> + }
> +
> + return 0;
> +}
> +
> +static int jpu_try_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> + struct jpu_fmt *fmt;
> +
> + fmt = jpu_find_format(ctx->mode, f->fmt.pix.pixelformat,
> + JPU_FMT_TYPE_CAPTURE);
> + if (!fmt) {
> + v4l2_err(&ctx->jpu->v4l2_dev,
> + "Fourcc format (0x%08x) invalid.\n",
> + f->fmt.pix.pixelformat);
> + return -EINVAL;
> + }
> +
> + return jpu_vidioc_try_fmt(f, fmt, ctx);
> +}
> +
> +static int jpu_try_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> + struct jpu_fmt *fmt;
> +
> + fmt = jpu_find_format(ctx->mode, f->fmt.pix.pixelformat,
> + JPU_FMT_TYPE_OUTPUT);
> + if (!fmt) {
> + v4l2_err(&ctx->jpu->v4l2_dev,
> + "Fourcc format (0x%08x) invalid.\n",
> + f->fmt.pix.pixelformat);
> + return -EINVAL;
> + }
> +
> + return jpu_vidioc_try_fmt(f, fmt, ctx);
> +}
> +
> +static int jpu_s_fmt(struct jpu_ctx *ctx, struct v4l2_format *f)
> +{
> + struct vb2_queue *vq;
> + struct jpu_q_data *q_data;
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> + unsigned int f_type;
> +
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (!vq)
> + return -EINVAL;
> +
> + q_data = jpu_get_q_data(ctx, f->type);
> +
> + if (vb2_is_busy(vq)) {
> + v4l2_err(&ctx->jpu->v4l2_dev, "%s queue busy\n", __func__);
> + return -EBUSY;
> + }
> +
> + f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
> + JPU_FMT_TYPE_CAPTURE;
> +
> + q_data->fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
> + q_data->w = pix->width;
> + q_data->h = pix->height;
> + if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
> + q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3;
> + else
> + q_data->size = pix->sizeimage;
> +
> + return 0;
> +}
> +
> +static int jpu_s_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + int ret;
> +
> + ret = jpu_try_fmt_vid_cap(file, priv, f);
> + if (ret)
> + return ret;
> +
> + return jpu_s_fmt(fh_to_ctx(priv), f);
> +}
> +
> +static int jpu_s_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + int ret;
> +
> + ret = jpu_try_fmt_vid_out(file, priv, f);
> + if (ret)
> + return ret;
> +
> + return jpu_s_fmt(fh_to_ctx(priv), f);
> +}
> +
> +
> +static int jpu_g_selection(struct file *file, void *priv,
> + struct v4l2_selection *s)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
> + s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + return -EINVAL;
> +
> + /* For JPEG blob active = default = bounds */
> + switch (s->target) {
> + case V4L2_SEL_TGT_CROP:
> + case V4L2_SEL_TGT_CROP_BOUNDS:
> + case V4L2_SEL_TGT_CROP_DEFAULT:
> + case V4L2_SEL_TGT_COMPOSE:
> + case V4L2_SEL_TGT_COMPOSE_DEFAULT:
> + s->r.width = ctx->out_q.w;
> + s->r.height = ctx->out_q.h;
> + break;
> + case V4L2_SEL_TGT_COMPOSE_BOUNDS:
> + case V4L2_SEL_TGT_COMPOSE_PADDED:
> + s->r.width = ctx->cap_q.w;
> + s->r.height = ctx->cap_q.h;
> + break;
> + default:
> + return -EINVAL;
> + }
> + s->r.left = 0;
> + s->r.top = 0;
> + return 0;
> +}
> +
> +/*
> + * V4L2 controls
> + */
> +static int jpu_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct jpu_ctx *ctx = ctrl_to_ctx(ctrl);
> + unsigned long flags;
> +
> + spin_lock_irqsave(&ctx->jpu->slock, flags);
> +
> + if (ctrl->id = V4L2_CID_JPEG_COMPRESSION_QUALITY)
> + ctx->compr_quality = ctrl->val;
> +
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> + return 0;
> +}
> +
> +static const struct v4l2_ctrl_ops jpu_ctrl_ops = {
> + .s_ctrl = jpu_s_ctrl,
> +};
> +
> +
> +static const struct v4l2_ioctl_ops jpu_ioctl_ops = {
> + .vidioc_querycap = jpu_querycap,
> +
> + .vidioc_enum_fmt_vid_cap = jpu_enum_fmt_vid_cap,
> + .vidioc_enum_fmt_vid_out = jpu_enum_fmt_vid_out,
> +
> + .vidioc_g_fmt_vid_cap = jpu_g_fmt,
> + .vidioc_g_fmt_vid_out = jpu_g_fmt,
> +
> + .vidioc_try_fmt_vid_cap = jpu_try_fmt_vid_cap,
> + .vidioc_try_fmt_vid_out = jpu_try_fmt_vid_out,
> +
> + .vidioc_s_fmt_vid_cap = jpu_s_fmt_vid_cap,
> + .vidioc_s_fmt_vid_out = jpu_s_fmt_vid_out,
> +
> + .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
> + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
> + .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
> + .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
> + .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> +
> + .vidioc_g_selection = jpu_g_selection,
> +};
> +
> +static int jpu_controls_create(struct jpu_ctx *ctx)
> +{
> + struct v4l2_ctrl *ctrl;
> +
> + v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
> +
> + if (ctx->mode = JPU_ENCODE) {
> + v4l2_ctrl_new_std(&ctx->ctrl_handler, &jpu_ctrl_ops,
> + V4L2_CID_JPEG_COMPRESSION_QUALITY,
> + 0, 1, 1, 1);
> + }
> +
> + if (ctx->ctrl_handler.error)
> + return ctx->ctrl_handler.error;
> +
> + if (ctx->mode = JPU_DECODE)
> + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
> + V4L2_CTRL_FLAG_READ_ONLY;
> +
> + return 0;
> +}
> +
> +/*
> + * ======================================
> + * Queue operations
> + * ======================================
> + */
> +static int jpu_queue_setup(struct vb2_queue *vq,
> + const struct v4l2_format *fmt,
> + unsigned int *nbuffers, unsigned int *nplanes,
> + unsigned int sizes[], void *alloc_ctxs[])
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
> + struct jpu_q_data *q_data;
> + unsigned int size, count = *nbuffers;
> +
> + q_data = jpu_get_q_data(ctx, vq->type);
> +
> + size = q_data->size;
> +
> + /*
> + * Header is parsed during decoding and parsed information stored
> + * in the context so we do not allow another buffer to overwrite it
> + */
> + if (ctx->mode = JPU_DECODE)
> + count = 1;
> +
> + *nbuffers = count;
> + *nplanes = 1;
> + sizes[0] = size;
> + alloc_ctxs[0] = ctx->jpu->alloc_ctx;
> +
> + return 0;
> +}
> +
> +static int jpu_buf_prepare(struct vb2_buffer *vb)
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct jpu_q_data *q_data;
> +
> + q_data = jpu_get_q_data(ctx, vb->vb2_queue->type);
> +
> + if (vb2_plane_size(vb, 0) < q_data->size) {
> + pr_err("%s: data will not fit into plane (%lu < %lu)\n",
> + __func__, vb2_plane_size(vb, 0), (long)q_data->size);
> + return -EINVAL;
> + }
> +
> + vb2_set_plane_payload(vb, 0, q_data->size);
> +
> + return 0;
> +}
> +
> +static void jpu_buf_queue(struct vb2_buffer *vb)
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> +
> + if (ctx->mode = JPU_DECODE &&
> + vb->vb2_queue->type = V4L2_BUF_TYPE_VIDEO_OUTPUT) {
> + struct jpu_q_data *q_data;
> + struct jpu *jpu = ctx->jpu;
> + unsigned int subsampling, w_out, h_out, w_cap, h_cap;
> + unsigned long src_addr, flags;
> +
> + src_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
> +
> + jpu_reset(jpu->regs);
> +
> + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
> + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> +
> + spin_lock_irqsave(&jpu->slock, flags);
> + jpu->status = JPU_BUSY;
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> +
> + iowrite32(INT(3), jpu->regs + JINTE);
> + iowrite32(src_addr, jpu->regs + JIFDSA1);
> + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> +
> + if (wait_event_interruptible_timeout(jpu->wq,
> + jpu->status != JPU_BUSY,
> + msecs_to_jiffies(100)) > 0
> + && jpu->status = JPU_OK)
> + ctx->hdr_parsed = true;
> +
> + w_out = ioread32(jpu->regs + JCHSZU) << 8 |
> + ioread32(jpu->regs + JCHSZD);
> +
> + h_out = ioread32(jpu->regs + JCVSZU) << 8 |
> + ioread32(jpu->regs + JCVSZD);
> +
> + w_cap = ioread32(jpu->regs + JIFDDHSZ);
> + h_cap = ioread32(jpu->regs + JIFDDVSZ);
> +
> + switch (ioread32(jpu->regs + JCMOD) & JCMOD_REDU) {
> + case JCMOD_REDU_422:
> + subsampling = V4L2_PIX_FMT_NV16;
> + break;
> + case JCMOD_REDU_420:
> + subsampling = V4L2_PIX_FMT_NV12;
> + break;
> + default:
> + subsampling = 0;
> + }
> +
> + if (!ctx->hdr_parsed || !subsampling || w_out > JPU_WIDTH_MAX ||
> + w_out < JPU_WIDTH_MIN || h_out > JPU_HEIGHT_MAX ||
> + h_out < JPU_HEIGHT_MIN) {
> + pr_err("incompatible or corrupted JPEG data\n");
> + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
> + return;
> + }
> +
> + q_data = &ctx->out_q;
> + q_data->w = w_out;
> + q_data->h = h_out;
> +
> + q_data = &ctx->cap_q;
> + q_data->w = w_cap;
> + q_data->h = h_cap;
> +
> + q_data->fmt = jpu_find_format(JPU_DECODE, subsampling,
> + JPU_FMT_TYPE_CAPTURE);
> +
> + q_data->size > + (q_data->w * q_data->h * q_data->fmt->depth) >> 3;
> + }
> +
> + if (ctx->fh.m2m_ctx)
> + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
> +}
> +
> +static int jpu_start_streaming(struct vb2_queue *q, unsigned int count)
> +{
> + return 0;
> +}
> +
> +static void jpu_stop_streaming(struct vb2_queue *q)
> +{
> +}
> +
> +static struct vb2_ops jpu_qops = {
> + .queue_setup = jpu_queue_setup,
> + .buf_prepare = jpu_buf_prepare,
> + .buf_queue = jpu_buf_queue,
> + .wait_prepare = vb2_ops_wait_prepare,
> + .wait_finish = vb2_ops_wait_finish,
> + .start_streaming = jpu_start_streaming,
> + .stop_streaming = jpu_stop_streaming,
> +};
> +
> +static int jpu_queue_init(void *priv, struct vb2_queue *src_vq,
> + struct vb2_queue *dst_vq)
> +{
> + struct jpu_ctx *ctx = priv;
> + int ret;
> +
> + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
> + src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
> + src_vq->drv_priv = ctx;
> + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + src_vq->ops = &jpu_qops;
> + src_vq->mem_ops = &vb2_dma_contig_memops;
> + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + src_vq->lock = &ctx->jpu->mutex;
> +
> + ret = vb2_queue_init(src_vq);
> + if (ret)
> + return ret;
> +
> + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> + dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
> + dst_vq->drv_priv = ctx;
> + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + dst_vq->ops = &jpu_qops;
> + dst_vq->mem_ops = &vb2_dma_contig_memops;
> + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + dst_vq->lock = &ctx->jpu->mutex;
> +
> + return vb2_queue_init(dst_vq);
> +}
> +
> +/*
> + * ======================================
> + * Device file operations
> + * ======================================
> + */
> +static int jpu_open(struct file *file)
> +{
> + struct jpu *jpu = video_drvdata(file);
> + struct video_device *vfd = video_devdata(file);
> + struct jpu_ctx *ctx;
> + struct jpu_fmt *out_fmt, *cap_fmt;
> + int ret = 0;
> +
> + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> +
> + if (mutex_lock_interruptible(&jpu->mutex)) {
> + ret = -ERESTARTSYS;
> + goto free;
> + }
> +
> + v4l2_fh_init(&ctx->fh, vfd);
> + ctx->fh.ctrl_handler = &ctx->ctrl_handler;
> + file->private_data = &ctx->fh;
> + v4l2_fh_add(&ctx->fh);
> +
> + ctx->jpu = jpu;
> + if (vfd = jpu->vfd_encoder) {
> + ctx->mode = JPU_ENCODE;
> + out_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
> + JPU_FMT_TYPE_OUTPUT);
> + cap_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
> + JPU_FMT_TYPE_CAPTURE);
> +
> + } else {
> + ctx->mode = JPU_DECODE;
> + out_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
> + JPU_FMT_TYPE_OUTPUT);
> + cap_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
> + JPU_FMT_TYPE_CAPTURE);
> + }
> +
> + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpu->m2m_dev, ctx, jpu_queue_init);
> + if (IS_ERR(ctx->fh.m2m_ctx)) {
> + ret = PTR_ERR(ctx->fh.m2m_ctx);
> + goto error;
> + }
> +
> + ctx->out_q.fmt = out_fmt;
> + ctx->cap_q.fmt = cap_fmt;
> +
> + ret = jpu_controls_create(ctx);
> + if (ret < 0)
> + goto error;
> +
> + if (jpu->ref_count = 0) {
> + ret = clk_prepare_enable(jpu->clk);
> + if (ret < 0)
> + goto error;
> + }
> +
> + jpu->ref_count++;
> +
> + mutex_unlock(&jpu->mutex);
> + return 0;
> +
> +error:
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + mutex_unlock(&jpu->mutex);
> +free:
> + kfree(ctx);
> + return ret;
> +}
> +
> +static int jpu_release(struct file *file)
> +{
> + struct jpu *jpu = video_drvdata(file);
> + struct jpu_ctx *ctx = fh_to_ctx(file->private_data);
> +
> + mutex_lock(&jpu->mutex);
> + if (--jpu->ref_count = 0)
> + clk_disable_unprepare(jpu->clk);
> + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> + v4l2_ctrl_handler_free(&ctx->ctrl_handler);
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + kfree(ctx);
> + mutex_unlock(&jpu->mutex);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_file_operations jpu_fops = {
> + .owner = THIS_MODULE,
> + .open = jpu_open,
> + .release = jpu_release,
> + .unlocked_ioctl = video_ioctl2,
> + .poll = v4l2_m2m_fop_poll,
> + .mmap = v4l2_m2m_fop_mmap,
> +};
> +
> +/*
> + * ======================================
> + * mem2mem callbacks
> + * ======================================
> + */
> +static void jpu_device_run(void *priv)
> +{
> + struct jpu_ctx *ctx = priv;
> + struct jpu *jpu = ctx->jpu;
> + struct vb2_buffer *src_buf, *dst_buf;
> + unsigned long src_addr, dst_addr, flags;
> + void *dst_vaddr;
> + unsigned int w, h;
> +
> + spin_lock_irqsave(&ctx->jpu->slock, flags);
> +
> + src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> + dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> + src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
> + dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
> + dst_vaddr = vb2_plane_vaddr(dst_buf, 0);
> +
> + jpu_reset(jpu->regs);
> +
> + if (ctx->mode = JPU_ENCODE) {
> + unsigned int redu, inft;
> +
> + w = ctx->out_q.w;
> + h = ctx->out_q.h;
> +
> + jpu_generate_hdr(&ctx->out_q, ctx->compr_quality, dst_vaddr);
> +
> + if (ctx->out_q.fmt->fourcc = V4L2_PIX_FMT_NV12) {
> + redu = JCMOD_REDU_420;
> + inft = JIFECNT_INFT_420;
> + } else {
> + redu = JCMOD_REDU_422;
> + inft = JIFECNT_INFT_422;
> + }
> +
> + /* the only no marker mode works for encoding */
> + iowrite32(JCMOD_DSP_ENC | JCMOD_PCTR | redu | JCMOD_SOI_ENABLE |
> + JCMOD_MSKIP_ENABLE, jpu->regs + JCMOD);
> +
> + iowrite32(JIFECNT_SWAP_WB | inft, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> + iowrite32(INT(10), jpu->regs + JINTE);
> +
> + /* Y and C components source addresses */
> + iowrite32(src_addr, jpu->regs + JIFESYA1);
> + iowrite32(src_addr + w * h, jpu->regs + JIFESCA1);
> +
> + /* memory width */
> + iowrite32(w, jpu->regs + JIFESMW);
> +
> + iowrite32((w >> 8) & JCSZ_MASK, jpu->regs + JCHSZU);
> + iowrite32(w & JCSZ_MASK, jpu->regs + JCHSZD);
> +
> + iowrite32((h >> 8) & JCSZ_MASK, jpu->regs + JCVSZU);
> + iowrite32(h & JCSZ_MASK, jpu->regs + JCVSZD);
> +
> + iowrite32(w, jpu->regs + JIFESHSZ);
> + iowrite32(h, jpu->regs + JIFESVSZ);
> +
> + iowrite32(dst_addr + JPU_JPEG_HDR_SIZE, jpu->regs + JIFEDA1);
> +
> + iowrite32(0 << JCQTN_SHIFT(1) | 1 << JCQTN_SHIFT(2) |
> + 1 << JCQTN_SHIFT(3), jpu->regs + JCQTN);
> +
> + iowrite32(0 << JCHTN_AC_SHIFT(1) | 0 << JCHTN_DC_SHIFT(1) |
> + 1 << JCHTN_AC_SHIFT(2) | 1 << JCHTN_DC_SHIFT(2) |
> + 1 << JCHTN_AC_SHIFT(3) | 1 << JCHTN_DC_SHIFT(3),
> + jpu->regs + JCHTN);
> +
> + jpu_set_qtbl(jpu->regs, ctx->compr_quality);
> + jpu_set_htbl(jpu->regs);
> + } else {
> + w = ctx->cap_q.w;
> + h = ctx->cap_q.h;
> +
> + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
> + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> + iowrite32(INT(10) | INT(7) | INT(6) | INT(5),
> + jpu->regs + JINTE);
> + iowrite32(src_addr, jpu->regs + JIFDSA1);
> + iowrite32(w, jpu->regs + JIFDDMW);
> + iowrite32(dst_addr, jpu->regs + JIFDDYA1);
> + iowrite32(dst_addr + w * h, jpu->regs + JIFDDCA1);
> + }
> +
> + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> +}
> +
> +static int jpu_job_ready(void *priv)
> +{
> + struct jpu_ctx *ctx = priv;
> +
> + if (ctx->mode = JPU_DECODE)
> + return ctx->hdr_parsed;
> + return 1;
> +}
> +
> +static void jpu_job_abort(void *priv)
> +{
> +}
> +
> +static struct v4l2_m2m_ops jpu_m2m_ops = {
> + .device_run = jpu_device_run,
> + .job_ready = jpu_job_ready,
> + .job_abort = jpu_job_abort,
> +};
> +
> +/*
> + * ======================================
> + * IRQ handler
> + * ======================================
> + */
> +static irqreturn_t jpu_irq_handler(int irq, void *dev_id)
> +{
> + struct jpu *jpu = dev_id;
> + struct jpu_ctx *curr_ctx;
> + struct vb2_buffer *src_buf, *dst_buf;
> + unsigned long payload_size = 0;
> + unsigned int int_status;
> + unsigned int error;
> +
> + spin_lock(&jpu->slock);
> +
> + int_status = ioread32(jpu->regs + JINTS);
> + jpu_int_clear(jpu->regs, int_status);
> +
> + /*
> + * In any mode (decoding/encoding) we can additionaly get
> + * error status (5th bit)
> + * jpu operation complete status (6th bit)
> + */
> + if (!((ioread32(jpu->regs + JINTE) | INT(5) | INT(6)) & int_status)) {
> + spin_unlock(&jpu->slock);
> + return IRQ_NONE;
> + }
> +
> + if (jpu->status = JPU_BUSY) {
> + if (int_status & INT(3))
> + jpu->status = JPU_OK;
> + if (int_status & INT(5))
> + jpu->status = JPU_ERR;
> + wake_up_interruptible(&jpu->wq);
> + goto handled;
> + }
> +
> + if ((int_status & INT(6)) && !(int_status & INT(10)))
> + goto handled;
> +
> + curr_ctx = v4l2_m2m_get_curr_priv(jpu->m2m_dev);
> +
> + src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
> + dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
> +
> + if (int_status & INT(10)) {
> + if (curr_ctx->mode = JPU_ENCODE) {
> + payload_size = ioread32(jpu->regs + JCDTCU) << 16 |
> + ioread32(jpu->regs + JCDTCM) << 8 |
> + ioread32(jpu->regs + JCDTCD);
> + vb2_set_plane_payload(dst_buf, 0,
> + payload_size + JPU_JPEG_HDR_SIZE);
> + }
> + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
> + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
> + } else if (int_status & INT(5)) {
> + error = ioread32(jpu->regs + JCDERR);
> + dev_err(jpu->dev, "error 0x%2X\n", error);
> + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
> + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
> + }
> +
> + v4l2_m2m_job_finish(jpu->m2m_dev, curr_ctx->fh.m2m_ctx);
> +
> +handled:
> + spin_unlock(&jpu->slock);
> + return IRQ_HANDLED;
> +}
> +
> +/*
> + * ======================================
> + * Driver basic infrastructure
> + * ======================================
> + */
> +static const struct of_device_id jpu_dt_ids[] = {
> + { .compatible = "renesas,jpu-r8a7790" },
> + { .compatible = "renesas,jpu-r8a7791" },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, jpu_dt_ids);
> +
> +static int jpu_probe(struct platform_device *pdev)
> +{
> + struct jpu *jpu;
> + struct resource *res;
> + int ret;
> +
> + /* JPEG IP abstraction struct */
> + jpu = devm_kzalloc(&pdev->dev, sizeof(struct jpu), GFP_KERNEL);
> + if (!jpu)
> + return -ENOMEM;
> +
> + mutex_init(&jpu->mutex);
> + spin_lock_init(&jpu->slock);
> + jpu->dev = &pdev->dev;
> +
> + /* memory-mapped registers */
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + jpu->regs = devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(jpu->regs))
> + return PTR_ERR(jpu->regs);
> +
> + /* interrupt service routine registration */
> + jpu->irq = ret = platform_get_irq(pdev, 0);
> + if (ret < 0) {
> + dev_err(&pdev->dev, "cannot find IRQ\n");
> + return ret;
> + }
> +
> + ret = devm_request_irq(&pdev->dev, jpu->irq, jpu_irq_handler, 0,
> + dev_name(&pdev->dev), jpu);
> + if (ret) {
> + dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpu->irq);
> + return ret;
> + }
> +
> + /* clocks */
> + jpu->clk = devm_clk_get(&pdev->dev, NULL);
> + if (IS_ERR(jpu->clk)) {
> + dev_err(&pdev->dev, "cannot get clock\n");
> + ret = PTR_ERR(jpu->clk);
> + return ret;
> + }
> +
> + /* v4l2 device */
> + ret = v4l2_device_register(&pdev->dev, &jpu->v4l2_dev);
> + if (ret) {
> + dev_err(&pdev->dev, "Failed to register v4l2 device\n");
> + goto clk_get_rollback;
> + }
> +
> + /* mem2mem device */
> + jpu->m2m_dev = v4l2_m2m_init(&jpu_m2m_ops);
> + if (IS_ERR(jpu->m2m_dev)) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to init mem2mem device\n");
> + ret = PTR_ERR(jpu->m2m_dev);
> + goto device_register_rollback;
> + }
> +
> + jpu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
> + if (IS_ERR(jpu->alloc_ctx)) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to init memory allocator\n");
> + ret = PTR_ERR(jpu->alloc_ctx);
> + goto m2m_init_rollback;
> + }
> +
> + /* JPEG encoder /dev/videoX node */
> + jpu->vfd_encoder = video_device_alloc();
> + if (!jpu->vfd_encoder) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
> + ret = -ENOMEM;
> + goto vb2_allocator_rollback;
> + }
> + strlcpy(jpu->vfd_encoder->name, JPU_M2M_NAME,
> + sizeof(jpu->vfd_encoder->name));
> + jpu->vfd_encoder->fops = &jpu_fops;
> + jpu->vfd_encoder->ioctl_ops = &jpu_ioctl_ops;
> + jpu->vfd_encoder->minor = -1;
> + jpu->vfd_encoder->release = video_device_release;
> + jpu->vfd_encoder->lock = &jpu->mutex;
> + jpu->vfd_encoder->v4l2_dev = &jpu->v4l2_dev;
> + jpu->vfd_encoder->vfl_dir = VFL_DIR_M2M;
> +
> + ret = video_register_device(jpu->vfd_encoder, VFL_TYPE_GRABBER, -1);
> + if (ret) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
> + goto enc_vdev_alloc_rollback;
> + }
> +
> + video_set_drvdata(jpu->vfd_encoder, jpu);
> + v4l2_info(&jpu->v4l2_dev, "encoder device registered as /dev/video%d\n",
> + jpu->vfd_encoder->num);
> +
> + /* JPEG decoder /dev/videoX node */
> + jpu->vfd_decoder = video_device_alloc();
> + if (!jpu->vfd_decoder) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
> + ret = -ENOMEM;
> + goto enc_vdev_register_rollback;
> + }
> + strlcpy(jpu->vfd_decoder->name, JPU_M2M_NAME,
> + sizeof(jpu->vfd_decoder->name));
> + jpu->vfd_decoder->fops = &jpu_fops;
> + jpu->vfd_decoder->ioctl_ops = &jpu_ioctl_ops;
> + jpu->vfd_decoder->minor = -1;
> + jpu->vfd_decoder->release = video_device_release;
> + jpu->vfd_decoder->lock = &jpu->mutex;
> + jpu->vfd_decoder->v4l2_dev = &jpu->v4l2_dev;
> + jpu->vfd_decoder->vfl_dir = VFL_DIR_M2M;
> +
> + ret = video_register_device(jpu->vfd_decoder, VFL_TYPE_GRABBER, -1);
> + if (ret) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
> + goto dec_vdev_alloc_rollback;
> + }
> +
> + video_set_drvdata(jpu->vfd_decoder, jpu);
> + v4l2_info(&jpu->v4l2_dev, "decoder device registered as /dev/video%d\n",
> + jpu->vfd_decoder->num);
> +
> + /* final statements & power management */
> + platform_set_drvdata(pdev, jpu);
> +
> + init_waitqueue_head(&jpu->wq);
> +
> + v4l2_info(&jpu->v4l2_dev, "Renesas JPEG codec\n");
> +
> + return 0;
> +
> +dec_vdev_alloc_rollback:
> + video_device_release(jpu->vfd_decoder);
> +
> +enc_vdev_register_rollback:
> + video_unregister_device(jpu->vfd_encoder);
> +
> +enc_vdev_alloc_rollback:
> + video_device_release(jpu->vfd_encoder);
> +
> +vb2_allocator_rollback:
> + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> +
> +m2m_init_rollback:
> + v4l2_m2m_release(jpu->m2m_dev);
> +
> +device_register_rollback:
> + v4l2_device_unregister(&jpu->v4l2_dev);
> +
> +clk_get_rollback:
> + clk_disable_unprepare(jpu->clk);
> +
> + return ret;
> +}
> +
> +static int jpu_remove(struct platform_device *pdev)
> +{
> + struct jpu *jpu = platform_get_drvdata(pdev);
> +
> + video_unregister_device(jpu->vfd_decoder);
> + video_device_release(jpu->vfd_decoder);
> + video_unregister_device(jpu->vfd_encoder);
> + video_device_release(jpu->vfd_encoder);
> + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> + v4l2_m2m_release(jpu->m2m_dev);
> + v4l2_device_unregister(&jpu->v4l2_dev);
> + clk_disable_unprepare(jpu->clk);
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int jpu_suspend(struct device *dev)
> +{
> + struct jpu *jpu = dev_get_drvdata(dev);
> +
> + if (jpu->ref_count = 0)
> + return 0;
> +
> + clk_disable_unprepare(jpu->clk);
> +
> + return 0;
> +}
> +
> +static int jpu_resume(struct device *dev)
> +{
> + struct jpu *jpu = dev_get_drvdata(dev);
> +
> + if (jpu->ref_count)
> + return 0;
> +
> + clk_prepare_enable(jpu->clk);
> +
> + return 0;
> +}
> +#endif
> +
> +static const struct dev_pm_ops jpu_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(jpu_suspend, jpu_resume)
> +};
> +
> +static struct platform_driver jpu_driver = {
> + .probe = jpu_probe,
> + .remove = jpu_remove,
> + .driver = {
> + .of_match_table = jpu_dt_ids,
> + .owner = THIS_MODULE,
> + .name = JPU_M2M_NAME,
> + .pm = &jpu_pm_ops,
> + },
> +};
> +
> +module_platform_driver(jpu_driver);
> +
> +MODULE_ALIAS("jpu");
> +MODULE_AUTHOR("Mikhail Ulianov <mikhail.ulyanov@cogentembedded.com>");
> +MODULE_DESCRIPTION("Renesas JPEG codec driver");
> +MODULE_LICENSE("GPL v2");
>
^ permalink raw reply [flat|nested] 78+ messages in thread* Re: [PATCH 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-08-19 13:37 ` Hans Verkuil
0 siblings, 0 replies; 78+ messages in thread
From: Hans Verkuil @ 2014-08-19 13:37 UTC (permalink / raw)
To: Mikhail Ulyanov, m.chehab, horms, magnus.damm, robh+dt,
pawel.moll, mark.rutland
Cc: laurent.pinchart, linux-sh, linux-media, devicetree
Hi Mikhail,
I did a quick scan over the source code and I noticed a few things that aren't
right. The easiest for you is probably to run the v4l2-compliance tool over
your driver and it should tell you what needs to be fixed. The things I
noticed are: querycap doesn't fill in bus_info (should be 'platform:<foo>')
and device_caps, the vid_cap try_fmt fails on a wrong field setting, instead
it should just set it.
I also have some doubts about g_selection, but I need to look at that again
when I have more time next week. It does look like it is not properly
separating the capture and output streams. I would expect g_selection to
return different things for capture and output. Note that v4l2-compliance
doesn't yet check the selection API, so it won't help you there.
Regards,
Hans
On 08/19/2014 12:50 PM, Mikhail Ulyanov wrote:
> Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
> ---
> drivers/media/platform/Kconfig | 11 +
> drivers/media/platform/Makefile | 2 +
> drivers/media/platform/jpu.c | 1630 +++++++++++++++++++++++++++++++++++++++
> 3 files changed, 1646 insertions(+)
> create mode 100644 drivers/media/platform/jpu.c
>
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index 6d86646..1b8c846 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
> To compile this driver as a module, choose M here: the module
> will be called vsp1.
>
> +config VIDEO_RENESAS_JPU
> + tristate "Renesas JPEG Processing Unit"
> + depends on VIDEO_DEV && VIDEO_V4L2
> + select VIDEOBUF2_DMA_CONTIG
> + select V4L2_MEM2MEM_DEV
> + ---help---
> + This is a V4L2 driver for the Renesas JPEG Processing Unit.
> +
> + To compile this driver as a module, choose M here: the module
> + will be called jpu.
> +
> config VIDEO_TI_VPE
> tristate "TI VPE (Video Processing Engine) driver"
> depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX
> diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
> index e5269da..e438534 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) += soc_camera/
>
> obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
>
> +obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
> +
> obj-y += davinci/
>
> obj-$(CONFIG_ARCH_OMAP) += omap/
> diff --git a/drivers/media/platform/jpu.c b/drivers/media/platform/jpu.c
> new file mode 100644
> index 0000000..8630baf
> --- /dev/null
> +++ b/drivers/media/platform/jpu.c
> @@ -0,0 +1,1630 @@
> +/*
> + * Author: Mikhail Ulyanov <source@cogentembedded.com>
> + * Copyright (C) 2014 Cogent Embedded, Inc.
> + * Copyright (C) 2014 Renesas Electronics Corporation
> + *
> + * This is based on the drivers/media/platform/s5p-jpu driver by
> + * Andrzej Pietrasiewicz and Jacek Anaszewski.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/err.h>
> +#include <linux/gfp.h>
> +#include <linux/interrupt.h>
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <linux/spinlock.h>
> +#include <linux/string.h>
> +#include <linux/videodev2.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-fh.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/videobuf2-core.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +
> +#define JPU_M2M_NAME "jpu"
> +
> +#define JPU_WIDTH_MIN 16
> +#define JPU_HEIGHT_MIN 16
> +#define JPU_WIDTH_MAX 4096
> +#define JPU_HEIGHT_MAX 4096
> +
> +#define JPU_ENCODE 0
> +#define JPU_DECODE 1
> +
> +/* Flags that indicate a format can be used for capture/output */
> +#define JPU_FMT_TYPE_OUTPUT 0
> +#define JPU_FMT_TYPE_CAPTURE 1
> +#define JPU_ENC_CAPTURE (1 << 0)
> +#define JPU_ENC_OUTPUT (1 << 1)
> +#define JPU_DEC_CAPTURE (1 << 2)
> +#define JPU_DEC_OUTPUT (1 << 3)
> +
> +/*
> + * JPEG registers and bits
> + */
> +
> +/* JPEG code mode register */
> +#define JCMOD 0x00
> +#define JCMOD_SOI_DISABLE (1 << 8)
> +#define JCMOD_SOI_ENABLE (0 << 8)
> +#define JCMOD_PCTR (1 << 7)
> +#define JCMOD_MSKIP_DISABLE (0 << 5)
> +#define JCMOD_MSKIP_ENABLE (1 << 5)
> +#define JCMOD_DSP_ENC (0 << 3)
> +#define JCMOD_DSP_DEC (1 << 3)
> +#define JCMOD_REDU (7 << 0)
> +#define JCMOD_REDU_422 (1 << 0)
> +#define JCMOD_REDU_420 (2 << 0)
> +
> +/* JPEG code command register */
> +#define JCCMD 0x04
> +#define JCCMD_SRST (1 << 12)
> +#define JCCMD_BRST (1 << 7)
> +#define JCCMD_JEND (1 << 2)
> +#define JCCMD_JSRT (1 << 0)
> +
> +/* JPEG code quantanization table number register */
> +#define JCQTN 0x0C
> +#define JCQTN_SHIFT(t) (((t) - 1) << 1)
> +
> +/* JPEG code Huffman table number register */
> +#define JCHTN 0x10
> +#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
> +#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
> +
> +#define JCDRIU 0x14 /* JPEG code DRI upper register */
> +#define JCDRIL 0x18 /* JPEG code DRI lower register */
> +#define JCVSZU 0x1C /* JPEG code vertical size upper register */
> +#define JCVSZD 0x20 /* JPEG code vertical size lower register */
> +#define JCHSZU 0x24 /* JPEG code horizontal size upper register */
> +#define JCHSZD 0x28 /* JPEG code horizontal size lower register */
> +#define JCSZ_MASK 0xff /* JPEG code h/v size register contains only 1 byte*/
> +
> +#define JCDTCU 0x2C /* JPEG code data count upper register */
> +#define JCDTCM 0x30 /* JPEG code data count middle register */
> +#define JCDTCD 0x34 /* JPEG code data count lower register */
> +
> +/* JPEG interrupt enable register */
> +#define JINTE 0x38
> +
> +/* JPEG interrupt status register */
> +#define JINTS 0x3C
> +#define JINTS_MASK 0x7c68
> +
> +#define INT(n) (1 << n)
> +
> +#define JCDERR 0x40 /* JPEG code decode error register */
> +
> +/* JPEG interface encoding */
> +#define JIFECNT 0x70
> +#define JIFECNT_INFT_422 0
> +#define JIFECNT_INFT_420 1
> +#define JIFECNT_SWAP_WB (0x3 << 4)
> +
> +/* JPEG interface encode source Y address register 1 */
> +#define JIFESYA1 0x74
> +/* JPEG interface encode source C address register 1 */
> +#define JIFESCA1 0x78
> +/* JPEG interface encode source Y address register 2 */
> +#define JIFESYA2 0x7C
> +/* JPEG interface encode source C address register 2 */
> +#define JIFESCA2 0x80
> +/* JPEG interface encode source memory width register */
> +#define JIFESMW 0x84
> +/* JPEG interface encode source vertical size register */
> +#define JIFESVSZ 0x88
> +/* JPEG interface encode source horizontal size register */
> +#define JIFESHSZ 0x8C
> +/* JPEG interface encode destination address register 1 */
> +#define JIFEDA1 0x90
> +/* JPEG interface encode destination address register 2 */
> +#define JIFEDA2 0x94
> +
> +/* JPEG decoding control register */
> +#define JIFDCNT 0xA0
> +#define JIFDCNT_SWAP (3 << 1)
> +#define JIFDCNT_SWAP_NO (0 << 1)
> +#define JIFDCNT_SWAP_BYTE (1 << 1)
> +#define JIFDCNT_SWAP_WORD (2 << 1)
> +#define JIFDCNT_SWAP_WB (3 << 1)
> +
> +/* JPEG decode source address register 1 */
> +#define JIFDSA1 0xA4
> +/* JPEG decode source address register 2 */
> +#define JIFDSA2 0xA8
> +/* JPEG decode data reload size register */
> +#define JIFDDRSZ 0xAC
> +/* JPEG decode data destination memory width register */
> +#define JIFDDMW 0xB0
> +/* JPEG decode data destination vertical size register */
> +#define JIFDDVSZ 0xB4
> +/* JPEG decode data destination horizontal size register */
> +#define JIFDDHSZ 0xB8
> +/* JPEG decode data destination Y address register 1 */
> +#define JIFDDYA1 0xBC
> +/* JPEG decode data destination C address register 1 */
> +#define JIFDDCA1 0xC0
> +/* JPEG decode data destination Y address register 2 */
> +#define JIFDDYA2 0xC4
> +/* JPEG decode data destination C address register 2 */
> +#define JIFDDCA2 0xC8
> +
> +/* JPEG code quantization tables registers */
> +#define JCQTBL(n) (0x10000 + (n) * 0x40)
> +
> +/* JPEG code Huffman table DC registers */
> +#define JCHTBD(n) (0x10100 + (n) * 0x100)
> +
> +/* JPEG code Huffman table AC registers */
> +#define JCHTBA(n) (0x10120 + (n) * 0x100)
> +
> +#define JPU_JPEG_HDR_SIZE 0x250
> +
> +enum jpu_status {
> + JPU_OK,
> + JPU_BUSY,
> + JPU_ERR
> +};
> +
> +/**
> + * struct jpu - JPEG IP abstraction
> + * @mutex: the mutex protecting this structure
> + * @slock: spinlock protecting the device contexts
> + * @v4l2_dev: v4l2 device for mem2mem mode
> + * @vfd_encoder: video device node for encoder mem2mem mode
> + * @vfd_decoder: video device node for decoder mem2mem mode
> + * @m2m_dev: v4l2 mem2mem device data
> + * @regs: JPEG IP registers mapping
> + * @irq: JPEG IP irq
> + * @clk: JPEG IP clock
> + * @dev: JPEG IP struct device
> + * @alloc_ctx: videobuf2 memory allocator's context
> + * @bounds: platform specific IP limitations
> + * @wq: waitqueue for header parsing handling
> + * @statatus: current driver state variable
> + * @ref_counter: reference counter
> + */
> +struct jpu {
> + struct mutex mutex;
> + spinlock_t slock;
> +
> + struct v4l2_device v4l2_dev;
> + struct video_device *vfd_encoder;
> + struct video_device *vfd_decoder;
> + struct v4l2_m2m_dev *m2m_dev;
> +
> + void __iomem *regs;
> + unsigned int irq;
> + struct clk *clk;
> + struct device *dev;
> + void *alloc_ctx;
> + struct jpu_bounds *bounds;
> + wait_queue_head_t wq;
> + enum jpu_status status;
> + int ref_count;
> +};
> +
> +/**
> + * struct jpu_fmt - driver's internal format data
> + * @name: format descritpion
> + * @fourcc: the fourcc code, 0 if not applicable
> + * @depth: number of bits per pixel
> + * @h_align: horizontal alignment order (align to 2^h_align)
> + * @v_align: vertical alignment order (align to 2^v_align)
> + * @types: types of queue this format is applicable to
> + */
> +struct jpu_fmt {
> + char *name;
> + u32 fourcc;
> + int depth;
> + int h_align;
> + int v_align;
> + u32 types;
> +};
> +
> +/**
> + * jpu_q_data - parameters of one queue
> + * @fmt: driver-specific format of this queue
> + * @w: image width
> + * @h: image height
> + * @size: image buffer size in bytes
> + */
> +struct jpu_q_data {
> + struct jpu_fmt *fmt;
> + u32 w;
> + u32 h;
> + u32 size;
> +};
> +
> +/**
> + * jpu_ctx - the device context data
> + * @jpu: JPEG IP device for this context
> + * @mode: compression (encode) operation or decompression (decode)
> + * @compr_quality: destination image quality in compression (encode) mode
> + * @out_q: source (output) queue information
> + * @fh: file handler;
> + * @hdr_parsed: set if header has been parsed during decompression
> + * @ctrl_handler: controls handler
> + */
> +struct jpu_ctx {
> + struct jpu *jpu;
> + unsigned int mode;
> + unsigned short compr_quality;
> + struct jpu_q_data out_q;
> + struct jpu_q_data cap_q;
> + struct v4l2_fh fh;
> + bool hdr_parsed;
> + struct v4l2_ctrl_handler ctrl_handler;
> +};
> +
> +static struct jpu_fmt jpu_formats[] = {
> + {
> + .name = "JPEG JFIF",
> + .fourcc = V4L2_PIX_FMT_JPEG,
> + .types = JPU_ENC_CAPTURE | JPU_DEC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:2 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .depth = 16,
> + .h_align = 3,
> + .v_align = 3,
> + .types = JPU_ENC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:0 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .depth = 12,
> + .h_align = 3,
> + .v_align = 3,
> + .types = JPU_ENC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:2 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .depth = 16,
> + .h_align = 2,
> + .v_align = 2,
> + .types = JPU_DEC_CAPTURE,
> + },
> + {
> + .name = "YUV 4:2:0 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .depth = 12,
> + .h_align = 2,
> + .v_align = 2,
> + .types = JPU_DEC_CAPTURE,
> + },
> +};
> +
> +static const u8 zigzag[] = {
> + 0x03, 0x02, 0x0b, 0x13, 0x0a, 0x01, 0x00, 0x09,
> + 0x12, 0x1b, 0x23, 0x1a, 0x11, 0x08, 0x07, 0x06,
> + 0x0f, 0x10, 0x19, 0x22, 0x2b, 0x33, 0x2a, 0x21,
> + 0x18, 0x17, 0x0e, 0x05, 0x04, 0x0d, 0x16, 0x1f,
> + 0x20, 0x29, 0x32, 0x3b, 0x3a, 0x31, 0x28, 0x27,
> + 0x1e, 0x15, 0x0e, 0x14, 0x10, 0x26, 0x2f, 0x30,
> + 0x39, 0x38, 0x37, 0x2e, 0x25, 0x1c, 0x24, 0x2b,
> + 0x36, 0x3f, 0x3e, 0x35, 0x2c, 0x34, 0x3d, 0x3c
> +};
> +
> +static unsigned char hdr_blob0[] = {
> + 0xff, 0xd8, 0xff, 0xfe, 0x00, 0x0e, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x84
> +};
> +
> +static unsigned char hdr_blob1[] = {
> + 0xff, 0xc0, 0x00, 0x11, 0x08
> +};
> +
> +static unsigned char hdr_blob2[] = {
> + 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff,
> + 0xc4, 0x01, 0xa2
> +};
> +
> +static const unsigned int qtbl_lum[2][16] = {
> + {
> + 0x14401927, 0x322e3e44, 0x10121726, 0x26354144,
> + 0x19171f26, 0x35414444, 0x27262635, 0x41444444,
> + 0x32263541, 0x44444444, 0x2e354144, 0x44444444,
> + 0x3e414444, 0x44444444, 0x44444444, 0x44444444
> + },
> + {
> + 0x08060608, 0x0c0e1011, 0x06060608, 0x0a0d0c0f,
> + 0x06060708, 0x0d0e1218, 0x0808080e, 0x0d131823,
> + 0x0c0a0d0d, 0x141a2227, 0x0e0d0e13, 0x1a222727,
> + 0x100c1318, 0x22272727, 0x110f1823, 0x27272727
> + }
> +};
> +
> +static const unsigned int qtbl_chr[2][16] = {
> + {
> + 0x15192026, 0x36444444, 0x191c1826, 0x36444444,
> + 0x2018202b, 0x42444444, 0x26262b35, 0x44444444,
> + 0x36424444, 0x44444444, 0x44444444, 0x44444444,
> + 0x44444444, 0x44444444, 0x44444444, 0x44444444
> + },
> + {
> + 0x0908090b, 0x0e111318, 0x080a090b, 0x0e0d1116,
> + 0x09090d0e, 0x0d0f171a, 0x0b0b0e0e, 0x0f141a21,
> + 0x0e0e0d0f, 0x14182127, 0x110d0f14, 0x18202727,
> + 0x1311171a, 0x21272727, 0x18161a21, 0x27272727
> + }
> +};
> +
> +static const unsigned int hdctbl_lum[7] = {
> + 0x00010501, 0x01010101, 0x01000000, 0x00000000,
> + 0x00010203, 0x04050607, 0x08090a0b
> +};
> +
> +static const unsigned int hdctbl_chr[7] = {
> + 0x00030101, 0x01010101, 0x01010100, 0x00000000,
> + 0x00010203, 0x04050607, 0x08090a0b
> +};
> +
> +static const unsigned int hactbl_lum[45] = {
> + 0x00020103, 0x03020403, 0x05050404, 0x0000017d,
> + 0x01020300, 0x04110512, 0x21314106, 0x13516107,
> + 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
> + 0x24336272, 0x82090a16, 0x1718191a, 0x25262728,
> + 0x292a3435, 0x36373839, 0x3a434445, 0x46474849,
> + 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
> + 0x6a737475, 0x76777879, 0x7a838485, 0x86878889,
> + 0x8a929394, 0x95969798, 0x999aa2a3, 0xa4a5a6a7,
> + 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
> + 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2,
> + 0xe3e4e5e6, 0xe7e8e9ea, 0xf1f2f3f4, 0xf5f6f7f8,
> + 0xf9fa0000
> +};
> +
> +static const unsigned int hactbl_chr[45] = {
> + 0x00020102, 0x04040304, 0x07050404, 0x00010277,
> + 0x00010203, 0x11040521, 0x31061241, 0x51076171,
> + 0x13223281, 0x08144291, 0xa1b1c109, 0x233352f0,
> + 0x156372d1, 0x0a162434, 0xe125f117, 0x18191a26,
> + 0x2728292a, 0x35363738, 0x393a4344, 0x45464748,
> + 0x494a5354, 0x55565758, 0x595a6364, 0x65666768,
> + 0x696a7374, 0x75767778, 0x797a8283, 0x84858687,
> + 0x88898a92, 0x93949596, 0x9798999a, 0xa2a3a4a5,
> + 0xa6a7a8a9, 0xaab2b3b4, 0xb5b6b7b8, 0xb9bac2c3,
> + 0xc4c5c6c7, 0xc8c9cad2, 0xd3d4d5d6, 0xd7d8d9da,
> + 0xe2e3e4e5, 0xe6e7e8e9, 0xeaf2f3f4, 0xf5f6f7f8,
> + 0xf9fa0000
> +};
> +
> +static struct jpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
> +{
> + return container_of(c->handler, struct jpu_ctx, ctrl_handler);
> +}
> +
> +static struct jpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
> +{
> + return container_of(fh, struct jpu_ctx, fh);
> +}
> +
> +static void jpu_set_tbl(void __iomem *regs, const unsigned int *tbl,
> + int len) {
> + unsigned int i;
> +
> + for (i = 0; i < len; i++)
> + iowrite32(tbl[i], regs + (i << 2));
> +}
> +
> +static void jpu_set_qtbl(void __iomem *regs, int quality)
> +{
> + jpu_set_tbl(regs + JCQTBL(0), qtbl_lum[quality],
> + ARRAY_SIZE(qtbl_lum[quality]));
> + jpu_set_tbl(regs + JCQTBL(1), qtbl_chr[quality],
> + ARRAY_SIZE(qtbl_chr[quality]));
> +}
> +
> +static void jpu_set_htbl(void __iomem *regs)
> +{
> + jpu_set_tbl(regs + JCHTBD(0), hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
> + jpu_set_tbl(regs + JCHTBD(1), hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
> + jpu_set_tbl(regs + JCHTBA(0), hactbl_lum, ARRAY_SIZE(hactbl_lum));
> + jpu_set_tbl(regs + JCHTBA(1), hactbl_chr, ARRAY_SIZE(hactbl_chr));
> +}
> +
> +static void jpu_int_clear(void __iomem *regs, unsigned int int_status)
> +{
> + iowrite32(~int_status & JINTS_MASK, regs + JINTS);
> +
> + if (int_status & (INT(6) | INT(5) | INT(3)))
> + iowrite32(JCCMD_JEND, regs + JCCMD);
> +}
> +
> +static void jpu_reset(void __iomem *regs)
> +{
> + iowrite32(JCCMD_SRST, regs + JCCMD);
> + while ((ioread32(regs + JCCMD) & JCCMD_SRST) != 0)
> + cpu_relax();
> +}
> +
> +/*
> + * ============================================================================
> + * video ioctl operations
> + * ============================================================================
> + */
> +static void put_byte(unsigned long *p, u8 v)
> +{
> + u8 *addr = (u8 *)*p;
> +
> + *addr = v;
> + (*p)++;
> +}
> +
> +static void put_short_be(unsigned long *p, u16 v)
> +{
> + u16 *addr = (u16 *)*p;
> +
> + *addr = cpu_to_be16(v);
> + *p += 2;
> +}
> +
> +static void put_word_be(unsigned long *p, u32 v)
> +{
> + u32 *addr = (u32 *)*p;
> +
> + *addr = cpu_to_be32(v);
> + *p += 4;
> +}
> +
> +static void put_blob_byte(unsigned long *p, const unsigned char *blob,
> + unsigned int len)
> +{
> + int i;
> +
> + for (i = 0; i < len; i++)
> + put_byte(p, blob[i]);
> +}
> +
> +static void put_qtbl(unsigned long *p, unsigned char id,
> + const unsigned int *qtbl)
> +{
> + int i;
> +
> + put_byte(p, id);
> + for (i = 0; i < ARRAY_SIZE(zigzag); i++)
> + put_byte(p, *((u8 *)qtbl + zigzag[i]));
> +}
> +
> +static void put_htbl(unsigned long *p, unsigned char tc,
> + const unsigned int *htbl, unsigned int len)
> +{
> + int i;
> +
> + put_byte(p, tc);
> + for (i = 0; i < len; i++)
> + put_word_be(p, htbl[i]);
> +}
> +
> +static void jpu_generate_hdr(struct jpu_q_data *q, int quality, void *buffer)
> +{
> + /* SOI(2) - DQT(134 / 2 tables) - SOF0(19) - DHT(420 / 2 tables) */
> + unsigned long p = (unsigned long)buffer;
> +
> + put_blob_byte(&p, hdr_blob0, ARRAY_SIZE(hdr_blob0));
> +
> + put_qtbl(&p, 0x00, qtbl_lum[quality]);
> + put_qtbl(&p, 0x01, qtbl_chr[quality]);
> +
> + put_blob_byte(&p, hdr_blob1, ARRAY_SIZE(hdr_blob1));
> +
> + put_short_be(&p, q->h);
> + put_short_be(&p, q->w);
> +
> + put_byte(&p, 0x03);
> + put_byte(&p, 0x01);
> +
> + if (q->fmt->fourcc == V4L2_PIX_FMT_NV16)
> + put_byte(&p, 0x21);
> + else
> + put_byte(&p, 0x22);
> +
> + put_blob_byte(&p, hdr_blob2, ARRAY_SIZE(hdr_blob2));
> +
> + put_htbl(&p, 0x00, hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
> + put_htbl(&p, 0x10, hactbl_lum, ARRAY_SIZE(hactbl_lum));
> + p -= 2;
> +
> + put_htbl(&p, 0x01, hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
> + put_htbl(&p, 0x11, hactbl_chr, ARRAY_SIZE(hactbl_chr));
> +}
> +
> +static int jpu_querycap(struct file *file, void *priv,
> + struct v4l2_capability *cap)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode == JPU_ENCODE) {
> + strlcpy(cap->driver, JPU_M2M_NAME " encoder",
> + sizeof(cap->driver));
> + strlcpy(cap->card, JPU_M2M_NAME " encoder",
> + sizeof(cap->card));
> + } else {
> + strlcpy(cap->driver, JPU_M2M_NAME " decoder",
> + sizeof(cap->driver));
> + strlcpy(cap->card, JPU_M2M_NAME " decoder",
> + sizeof(cap->card));
> + }
> + cap->bus_info[0] = 0;
> + cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M |
> + V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT;
> + return 0;
> +}
> +
> +static struct jpu_fmt *jpu_find_format(unsigned int mode, u32 pixelformat,
> + unsigned int fmt_type)
> +{
> + unsigned int k, fmt_flag;
> +
> + if (mode == JPU_ENCODE)
> + fmt_flag = (fmt_type == JPU_FMT_TYPE_OUTPUT) ? JPU_ENC_OUTPUT :
> + JPU_ENC_CAPTURE;
> + else
> + fmt_flag = (fmt_type == JPU_FMT_TYPE_OUTPUT) ? JPU_DEC_OUTPUT :
> + JPU_DEC_CAPTURE;
> +
> + for (k = 0; k < ARRAY_SIZE(jpu_formats); k++) {
> + struct jpu_fmt *fmt = &jpu_formats[k];
> +
> + if (fmt->fourcc == pixelformat &&
> + fmt->types & fmt_flag) {
> + return fmt;
> + }
> + }
> +
> + return NULL;
> +}
> +
> +static int jpu_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
> +{
> + int i, num = 0;
> +
> + for (i = 0; i < ARRAY_SIZE(jpu_formats); ++i) {
> + if (jpu_formats[i].types & type) {
> + /* index-th format of type type found ? */
> + if (num == f->index)
> + break;
> + /*
> + * Correct type but haven't reached our index yet,
> + * just increment per-type index
> + */
> + ++num;
> + }
> + }
> +
> + /* Format not found */
> + if (i >= ARRAY_SIZE(jpu_formats))
> + return -EINVAL;
> +
> + strlcpy(f->description, jpu_formats[i].name, sizeof(f->description));
> + f->pixelformat = jpu_formats[i].fourcc;
> +
> + return 0;
> +}
> +
> +static int jpu_enum_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode == JPU_ENCODE)
> + return jpu_enum_fmt(f, JPU_ENC_CAPTURE);
> +
> + return jpu_enum_fmt(f, JPU_DEC_CAPTURE);
> +}
> +
> +static int jpu_enum_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode == JPU_ENCODE)
> + return jpu_enum_fmt(f, JPU_ENC_OUTPUT);
> +
> + return jpu_enum_fmt(f, JPU_DEC_OUTPUT);
> +}
> +
> +static struct jpu_q_data *jpu_get_q_data(struct jpu_ctx *ctx,
> + enum v4l2_buf_type type)
> +{
> + switch (type) {
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + return &ctx->out_q;
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + return &ctx->cap_q;
> + default:
> + BUG();
> + }
> +}
> +
> +static int jpu_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
> +{
> + struct vb2_queue *vq;
> + struct jpu_q_data *q_data;
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (!vq)
> + return -EINVAL;
> +
> + if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
> + ctx->mode == JPU_DECODE && !ctx->hdr_parsed)
> + return -EINVAL;
> +
> + q_data = jpu_get_q_data(ctx, f->type);
> +
> + pix->width = q_data->w;
> + pix->height = q_data->h;
> + pix->field = V4L2_FIELD_NONE;
> + pix->pixelformat = q_data->fmt->fourcc;
> + pix->bytesperline = 0;
> + if (pix->pixelformat != V4L2_PIX_FMT_JPEG)
> + pix->bytesperline = q_data->w;
> + pix->sizeimage = q_data->size;
> +
> + return 0;
> +}
> +
> +
> +static void jpu_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
> + unsigned int walign, u32 *h,
> + unsigned int hmin, unsigned int hmax,
> + unsigned int halign)
> +{
> + int width, height, w_step, h_step;
> +
> + width = *w;
> + height = *h;
> +
> + w_step = 1 << walign;
> + h_step = 1 << halign;
> + v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 3);
> +
> + if (*w < width && *w + w_step < wmax)
> + *w += w_step;
> + if (*h < height && *h + h_step < hmax)
> + *h += h_step;
> +}
> +
> +static int jpu_vidioc_try_fmt(struct v4l2_format *f, struct jpu_fmt *fmt,
> + struct jpu_ctx *ctx)
> +{
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> +
> + if (pix->field == V4L2_FIELD_ANY)
> + pix->field = V4L2_FIELD_NONE;
> + else if (pix->field != V4L2_FIELD_NONE)
> + return -EINVAL;
> +
> + /*
> + * V4L2 specification suggests the driver corrects the format struct
> + * if any of the dimensions is unsupported
> + */
> + jpu_bound_align_image(&pix->width, JPU_WIDTH_MIN, JPU_WIDTH_MAX,
> + fmt->h_align, &pix->height, JPU_HEIGHT_MIN,
> + JPU_HEIGHT_MAX, fmt->v_align);
> +
> + if (fmt->fourcc == V4L2_PIX_FMT_JPEG) {
> + if (pix->sizeimage <= 0)
> + pix->sizeimage = PAGE_SIZE;
> + pix->bytesperline = 0;
> + } else {
> + u32 bpl = pix->bytesperline;
> +
> + if (bpl < pix->width)
> + bpl = pix->width;
> +
> + pix->bytesperline = bpl;
> + pix->sizeimage = (pix->width * pix->height * fmt->depth) >> 3;
> + }
> +
> + return 0;
> +}
> +
> +static int jpu_try_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> + struct jpu_fmt *fmt;
> +
> + fmt = jpu_find_format(ctx->mode, f->fmt.pix.pixelformat,
> + JPU_FMT_TYPE_CAPTURE);
> + if (!fmt) {
> + v4l2_err(&ctx->jpu->v4l2_dev,
> + "Fourcc format (0x%08x) invalid.\n",
> + f->fmt.pix.pixelformat);
> + return -EINVAL;
> + }
> +
> + return jpu_vidioc_try_fmt(f, fmt, ctx);
> +}
> +
> +static int jpu_try_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> + struct jpu_fmt *fmt;
> +
> + fmt = jpu_find_format(ctx->mode, f->fmt.pix.pixelformat,
> + JPU_FMT_TYPE_OUTPUT);
> + if (!fmt) {
> + v4l2_err(&ctx->jpu->v4l2_dev,
> + "Fourcc format (0x%08x) invalid.\n",
> + f->fmt.pix.pixelformat);
> + return -EINVAL;
> + }
> +
> + return jpu_vidioc_try_fmt(f, fmt, ctx);
> +}
> +
> +static int jpu_s_fmt(struct jpu_ctx *ctx, struct v4l2_format *f)
> +{
> + struct vb2_queue *vq;
> + struct jpu_q_data *q_data;
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> + unsigned int f_type;
> +
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (!vq)
> + return -EINVAL;
> +
> + q_data = jpu_get_q_data(ctx, f->type);
> +
> + if (vb2_is_busy(vq)) {
> + v4l2_err(&ctx->jpu->v4l2_dev, "%s queue busy\n", __func__);
> + return -EBUSY;
> + }
> +
> + f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
> + JPU_FMT_TYPE_CAPTURE;
> +
> + q_data->fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
> + q_data->w = pix->width;
> + q_data->h = pix->height;
> + if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
> + q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3;
> + else
> + q_data->size = pix->sizeimage;
> +
> + return 0;
> +}
> +
> +static int jpu_s_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + int ret;
> +
> + ret = jpu_try_fmt_vid_cap(file, priv, f);
> + if (ret)
> + return ret;
> +
> + return jpu_s_fmt(fh_to_ctx(priv), f);
> +}
> +
> +static int jpu_s_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + int ret;
> +
> + ret = jpu_try_fmt_vid_out(file, priv, f);
> + if (ret)
> + return ret;
> +
> + return jpu_s_fmt(fh_to_ctx(priv), f);
> +}
> +
> +
> +static int jpu_g_selection(struct file *file, void *priv,
> + struct v4l2_selection *s)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
> + s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + return -EINVAL;
> +
> + /* For JPEG blob active == default == bounds */
> + switch (s->target) {
> + case V4L2_SEL_TGT_CROP:
> + case V4L2_SEL_TGT_CROP_BOUNDS:
> + case V4L2_SEL_TGT_CROP_DEFAULT:
> + case V4L2_SEL_TGT_COMPOSE:
> + case V4L2_SEL_TGT_COMPOSE_DEFAULT:
> + s->r.width = ctx->out_q.w;
> + s->r.height = ctx->out_q.h;
> + break;
> + case V4L2_SEL_TGT_COMPOSE_BOUNDS:
> + case V4L2_SEL_TGT_COMPOSE_PADDED:
> + s->r.width = ctx->cap_q.w;
> + s->r.height = ctx->cap_q.h;
> + break;
> + default:
> + return -EINVAL;
> + }
> + s->r.left = 0;
> + s->r.top = 0;
> + return 0;
> +}
> +
> +/*
> + * V4L2 controls
> + */
> +static int jpu_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct jpu_ctx *ctx = ctrl_to_ctx(ctrl);
> + unsigned long flags;
> +
> + spin_lock_irqsave(&ctx->jpu->slock, flags);
> +
> + if (ctrl->id == V4L2_CID_JPEG_COMPRESSION_QUALITY)
> + ctx->compr_quality = ctrl->val;
> +
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> + return 0;
> +}
> +
> +static const struct v4l2_ctrl_ops jpu_ctrl_ops = {
> + .s_ctrl = jpu_s_ctrl,
> +};
> +
> +
> +static const struct v4l2_ioctl_ops jpu_ioctl_ops = {
> + .vidioc_querycap = jpu_querycap,
> +
> + .vidioc_enum_fmt_vid_cap = jpu_enum_fmt_vid_cap,
> + .vidioc_enum_fmt_vid_out = jpu_enum_fmt_vid_out,
> +
> + .vidioc_g_fmt_vid_cap = jpu_g_fmt,
> + .vidioc_g_fmt_vid_out = jpu_g_fmt,
> +
> + .vidioc_try_fmt_vid_cap = jpu_try_fmt_vid_cap,
> + .vidioc_try_fmt_vid_out = jpu_try_fmt_vid_out,
> +
> + .vidioc_s_fmt_vid_cap = jpu_s_fmt_vid_cap,
> + .vidioc_s_fmt_vid_out = jpu_s_fmt_vid_out,
> +
> + .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
> + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
> + .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
> + .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
> + .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> +
> + .vidioc_g_selection = jpu_g_selection,
> +};
> +
> +static int jpu_controls_create(struct jpu_ctx *ctx)
> +{
> + struct v4l2_ctrl *ctrl;
> +
> + v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
> +
> + if (ctx->mode == JPU_ENCODE) {
> + v4l2_ctrl_new_std(&ctx->ctrl_handler, &jpu_ctrl_ops,
> + V4L2_CID_JPEG_COMPRESSION_QUALITY,
> + 0, 1, 1, 1);
> + }
> +
> + if (ctx->ctrl_handler.error)
> + return ctx->ctrl_handler.error;
> +
> + if (ctx->mode == JPU_DECODE)
> + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
> + V4L2_CTRL_FLAG_READ_ONLY;
> +
> + return 0;
> +}
> +
> +/*
> + * ============================================================================
> + * Queue operations
> + * ============================================================================
> + */
> +static int jpu_queue_setup(struct vb2_queue *vq,
> + const struct v4l2_format *fmt,
> + unsigned int *nbuffers, unsigned int *nplanes,
> + unsigned int sizes[], void *alloc_ctxs[])
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
> + struct jpu_q_data *q_data;
> + unsigned int size, count = *nbuffers;
> +
> + q_data = jpu_get_q_data(ctx, vq->type);
> +
> + size = q_data->size;
> +
> + /*
> + * Header is parsed during decoding and parsed information stored
> + * in the context so we do not allow another buffer to overwrite it
> + */
> + if (ctx->mode == JPU_DECODE)
> + count = 1;
> +
> + *nbuffers = count;
> + *nplanes = 1;
> + sizes[0] = size;
> + alloc_ctxs[0] = ctx->jpu->alloc_ctx;
> +
> + return 0;
> +}
> +
> +static int jpu_buf_prepare(struct vb2_buffer *vb)
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct jpu_q_data *q_data;
> +
> + q_data = jpu_get_q_data(ctx, vb->vb2_queue->type);
> +
> + if (vb2_plane_size(vb, 0) < q_data->size) {
> + pr_err("%s: data will not fit into plane (%lu < %lu)\n",
> + __func__, vb2_plane_size(vb, 0), (long)q_data->size);
> + return -EINVAL;
> + }
> +
> + vb2_set_plane_payload(vb, 0, q_data->size);
> +
> + return 0;
> +}
> +
> +static void jpu_buf_queue(struct vb2_buffer *vb)
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> +
> + if (ctx->mode == JPU_DECODE &&
> + vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
> + struct jpu_q_data *q_data;
> + struct jpu *jpu = ctx->jpu;
> + unsigned int subsampling, w_out, h_out, w_cap, h_cap;
> + unsigned long src_addr, flags;
> +
> + src_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
> +
> + jpu_reset(jpu->regs);
> +
> + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
> + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> +
> + spin_lock_irqsave(&jpu->slock, flags);
> + jpu->status = JPU_BUSY;
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> +
> + iowrite32(INT(3), jpu->regs + JINTE);
> + iowrite32(src_addr, jpu->regs + JIFDSA1);
> + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> +
> + if (wait_event_interruptible_timeout(jpu->wq,
> + jpu->status != JPU_BUSY,
> + msecs_to_jiffies(100)) > 0
> + && jpu->status == JPU_OK)
> + ctx->hdr_parsed = true;
> +
> + w_out = ioread32(jpu->regs + JCHSZU) << 8 |
> + ioread32(jpu->regs + JCHSZD);
> +
> + h_out = ioread32(jpu->regs + JCVSZU) << 8 |
> + ioread32(jpu->regs + JCVSZD);
> +
> + w_cap = ioread32(jpu->regs + JIFDDHSZ);
> + h_cap = ioread32(jpu->regs + JIFDDVSZ);
> +
> + switch (ioread32(jpu->regs + JCMOD) & JCMOD_REDU) {
> + case JCMOD_REDU_422:
> + subsampling = V4L2_PIX_FMT_NV16;
> + break;
> + case JCMOD_REDU_420:
> + subsampling = V4L2_PIX_FMT_NV12;
> + break;
> + default:
> + subsampling = 0;
> + }
> +
> + if (!ctx->hdr_parsed || !subsampling || w_out > JPU_WIDTH_MAX ||
> + w_out < JPU_WIDTH_MIN || h_out > JPU_HEIGHT_MAX ||
> + h_out < JPU_HEIGHT_MIN) {
> + pr_err("incompatible or corrupted JPEG data\n");
> + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
> + return;
> + }
> +
> + q_data = &ctx->out_q;
> + q_data->w = w_out;
> + q_data->h = h_out;
> +
> + q_data = &ctx->cap_q;
> + q_data->w = w_cap;
> + q_data->h = h_cap;
> +
> + q_data->fmt = jpu_find_format(JPU_DECODE, subsampling,
> + JPU_FMT_TYPE_CAPTURE);
> +
> + q_data->size =
> + (q_data->w * q_data->h * q_data->fmt->depth) >> 3;
> + }
> +
> + if (ctx->fh.m2m_ctx)
> + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
> +}
> +
> +static int jpu_start_streaming(struct vb2_queue *q, unsigned int count)
> +{
> + return 0;
> +}
> +
> +static void jpu_stop_streaming(struct vb2_queue *q)
> +{
> +}
> +
> +static struct vb2_ops jpu_qops = {
> + .queue_setup = jpu_queue_setup,
> + .buf_prepare = jpu_buf_prepare,
> + .buf_queue = jpu_buf_queue,
> + .wait_prepare = vb2_ops_wait_prepare,
> + .wait_finish = vb2_ops_wait_finish,
> + .start_streaming = jpu_start_streaming,
> + .stop_streaming = jpu_stop_streaming,
> +};
> +
> +static int jpu_queue_init(void *priv, struct vb2_queue *src_vq,
> + struct vb2_queue *dst_vq)
> +{
> + struct jpu_ctx *ctx = priv;
> + int ret;
> +
> + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
> + src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
> + src_vq->drv_priv = ctx;
> + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + src_vq->ops = &jpu_qops;
> + src_vq->mem_ops = &vb2_dma_contig_memops;
> + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + src_vq->lock = &ctx->jpu->mutex;
> +
> + ret = vb2_queue_init(src_vq);
> + if (ret)
> + return ret;
> +
> + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> + dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
> + dst_vq->drv_priv = ctx;
> + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + dst_vq->ops = &jpu_qops;
> + dst_vq->mem_ops = &vb2_dma_contig_memops;
> + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + dst_vq->lock = &ctx->jpu->mutex;
> +
> + return vb2_queue_init(dst_vq);
> +}
> +
> +/*
> + * ============================================================================
> + * Device file operations
> + * ============================================================================
> + */
> +static int jpu_open(struct file *file)
> +{
> + struct jpu *jpu = video_drvdata(file);
> + struct video_device *vfd = video_devdata(file);
> + struct jpu_ctx *ctx;
> + struct jpu_fmt *out_fmt, *cap_fmt;
> + int ret = 0;
> +
> + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> +
> + if (mutex_lock_interruptible(&jpu->mutex)) {
> + ret = -ERESTARTSYS;
> + goto free;
> + }
> +
> + v4l2_fh_init(&ctx->fh, vfd);
> + ctx->fh.ctrl_handler = &ctx->ctrl_handler;
> + file->private_data = &ctx->fh;
> + v4l2_fh_add(&ctx->fh);
> +
> + ctx->jpu = jpu;
> + if (vfd == jpu->vfd_encoder) {
> + ctx->mode = JPU_ENCODE;
> + out_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
> + JPU_FMT_TYPE_OUTPUT);
> + cap_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
> + JPU_FMT_TYPE_CAPTURE);
> +
> + } else {
> + ctx->mode = JPU_DECODE;
> + out_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
> + JPU_FMT_TYPE_OUTPUT);
> + cap_fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
> + JPU_FMT_TYPE_CAPTURE);
> + }
> +
> + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpu->m2m_dev, ctx, jpu_queue_init);
> + if (IS_ERR(ctx->fh.m2m_ctx)) {
> + ret = PTR_ERR(ctx->fh.m2m_ctx);
> + goto error;
> + }
> +
> + ctx->out_q.fmt = out_fmt;
> + ctx->cap_q.fmt = cap_fmt;
> +
> + ret = jpu_controls_create(ctx);
> + if (ret < 0)
> + goto error;
> +
> + if (jpu->ref_count == 0) {
> + ret = clk_prepare_enable(jpu->clk);
> + if (ret < 0)
> + goto error;
> + }
> +
> + jpu->ref_count++;
> +
> + mutex_unlock(&jpu->mutex);
> + return 0;
> +
> +error:
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + mutex_unlock(&jpu->mutex);
> +free:
> + kfree(ctx);
> + return ret;
> +}
> +
> +static int jpu_release(struct file *file)
> +{
> + struct jpu *jpu = video_drvdata(file);
> + struct jpu_ctx *ctx = fh_to_ctx(file->private_data);
> +
> + mutex_lock(&jpu->mutex);
> + if (--jpu->ref_count == 0)
> + clk_disable_unprepare(jpu->clk);
> + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> + v4l2_ctrl_handler_free(&ctx->ctrl_handler);
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + kfree(ctx);
> + mutex_unlock(&jpu->mutex);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_file_operations jpu_fops = {
> + .owner = THIS_MODULE,
> + .open = jpu_open,
> + .release = jpu_release,
> + .unlocked_ioctl = video_ioctl2,
> + .poll = v4l2_m2m_fop_poll,
> + .mmap = v4l2_m2m_fop_mmap,
> +};
> +
> +/*
> + * ============================================================================
> + * mem2mem callbacks
> + * ============================================================================
> + */
> +static void jpu_device_run(void *priv)
> +{
> + struct jpu_ctx *ctx = priv;
> + struct jpu *jpu = ctx->jpu;
> + struct vb2_buffer *src_buf, *dst_buf;
> + unsigned long src_addr, dst_addr, flags;
> + void *dst_vaddr;
> + unsigned int w, h;
> +
> + spin_lock_irqsave(&ctx->jpu->slock, flags);
> +
> + src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> + dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> + src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
> + dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
> + dst_vaddr = vb2_plane_vaddr(dst_buf, 0);
> +
> + jpu_reset(jpu->regs);
> +
> + if (ctx->mode == JPU_ENCODE) {
> + unsigned int redu, inft;
> +
> + w = ctx->out_q.w;
> + h = ctx->out_q.h;
> +
> + jpu_generate_hdr(&ctx->out_q, ctx->compr_quality, dst_vaddr);
> +
> + if (ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_NV12) {
> + redu = JCMOD_REDU_420;
> + inft = JIFECNT_INFT_420;
> + } else {
> + redu = JCMOD_REDU_422;
> + inft = JIFECNT_INFT_422;
> + }
> +
> + /* the only no marker mode works for encoding */
> + iowrite32(JCMOD_DSP_ENC | JCMOD_PCTR | redu | JCMOD_SOI_ENABLE |
> + JCMOD_MSKIP_ENABLE, jpu->regs + JCMOD);
> +
> + iowrite32(JIFECNT_SWAP_WB | inft, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> + iowrite32(INT(10), jpu->regs + JINTE);
> +
> + /* Y and C components source addresses */
> + iowrite32(src_addr, jpu->regs + JIFESYA1);
> + iowrite32(src_addr + w * h, jpu->regs + JIFESCA1);
> +
> + /* memory width */
> + iowrite32(w, jpu->regs + JIFESMW);
> +
> + iowrite32((w >> 8) & JCSZ_MASK, jpu->regs + JCHSZU);
> + iowrite32(w & JCSZ_MASK, jpu->regs + JCHSZD);
> +
> + iowrite32((h >> 8) & JCSZ_MASK, jpu->regs + JCVSZU);
> + iowrite32(h & JCSZ_MASK, jpu->regs + JCVSZD);
> +
> + iowrite32(w, jpu->regs + JIFESHSZ);
> + iowrite32(h, jpu->regs + JIFESVSZ);
> +
> + iowrite32(dst_addr + JPU_JPEG_HDR_SIZE, jpu->regs + JIFEDA1);
> +
> + iowrite32(0 << JCQTN_SHIFT(1) | 1 << JCQTN_SHIFT(2) |
> + 1 << JCQTN_SHIFT(3), jpu->regs + JCQTN);
> +
> + iowrite32(0 << JCHTN_AC_SHIFT(1) | 0 << JCHTN_DC_SHIFT(1) |
> + 1 << JCHTN_AC_SHIFT(2) | 1 << JCHTN_DC_SHIFT(2) |
> + 1 << JCHTN_AC_SHIFT(3) | 1 << JCHTN_DC_SHIFT(3),
> + jpu->regs + JCHTN);
> +
> + jpu_set_qtbl(jpu->regs, ctx->compr_quality);
> + jpu_set_htbl(jpu->regs);
> + } else {
> + w = ctx->cap_q.w;
> + h = ctx->cap_q.h;
> +
> + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
> + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> + iowrite32(INT(10) | INT(7) | INT(6) | INT(5),
> + jpu->regs + JINTE);
> + iowrite32(src_addr, jpu->regs + JIFDSA1);
> + iowrite32(w, jpu->regs + JIFDDMW);
> + iowrite32(dst_addr, jpu->regs + JIFDDYA1);
> + iowrite32(dst_addr + w * h, jpu->regs + JIFDDCA1);
> + }
> +
> + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> +}
> +
> +static int jpu_job_ready(void *priv)
> +{
> + struct jpu_ctx *ctx = priv;
> +
> + if (ctx->mode == JPU_DECODE)
> + return ctx->hdr_parsed;
> + return 1;
> +}
> +
> +static void jpu_job_abort(void *priv)
> +{
> +}
> +
> +static struct v4l2_m2m_ops jpu_m2m_ops = {
> + .device_run = jpu_device_run,
> + .job_ready = jpu_job_ready,
> + .job_abort = jpu_job_abort,
> +};
> +
> +/*
> + * ============================================================================
> + * IRQ handler
> + * ============================================================================
> + */
> +static irqreturn_t jpu_irq_handler(int irq, void *dev_id)
> +{
> + struct jpu *jpu = dev_id;
> + struct jpu_ctx *curr_ctx;
> + struct vb2_buffer *src_buf, *dst_buf;
> + unsigned long payload_size = 0;
> + unsigned int int_status;
> + unsigned int error;
> +
> + spin_lock(&jpu->slock);
> +
> + int_status = ioread32(jpu->regs + JINTS);
> + jpu_int_clear(jpu->regs, int_status);
> +
> + /*
> + * In any mode (decoding/encoding) we can additionaly get
> + * error status (5th bit)
> + * jpu operation complete status (6th bit)
> + */
> + if (!((ioread32(jpu->regs + JINTE) | INT(5) | INT(6)) & int_status)) {
> + spin_unlock(&jpu->slock);
> + return IRQ_NONE;
> + }
> +
> + if (jpu->status == JPU_BUSY) {
> + if (int_status & INT(3))
> + jpu->status = JPU_OK;
> + if (int_status & INT(5))
> + jpu->status = JPU_ERR;
> + wake_up_interruptible(&jpu->wq);
> + goto handled;
> + }
> +
> + if ((int_status & INT(6)) && !(int_status & INT(10)))
> + goto handled;
> +
> + curr_ctx = v4l2_m2m_get_curr_priv(jpu->m2m_dev);
> +
> + src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
> + dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
> +
> + if (int_status & INT(10)) {
> + if (curr_ctx->mode == JPU_ENCODE) {
> + payload_size = ioread32(jpu->regs + JCDTCU) << 16 |
> + ioread32(jpu->regs + JCDTCM) << 8 |
> + ioread32(jpu->regs + JCDTCD);
> + vb2_set_plane_payload(dst_buf, 0,
> + payload_size + JPU_JPEG_HDR_SIZE);
> + }
> + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
> + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
> + } else if (int_status & INT(5)) {
> + error = ioread32(jpu->regs + JCDERR);
> + dev_err(jpu->dev, "error 0x%2X\n", error);
> + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
> + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
> + }
> +
> + v4l2_m2m_job_finish(jpu->m2m_dev, curr_ctx->fh.m2m_ctx);
> +
> +handled:
> + spin_unlock(&jpu->slock);
> + return IRQ_HANDLED;
> +}
> +
> +/*
> + * ============================================================================
> + * Driver basic infrastructure
> + * ============================================================================
> + */
> +static const struct of_device_id jpu_dt_ids[] = {
> + { .compatible = "renesas,jpu-r8a7790" },
> + { .compatible = "renesas,jpu-r8a7791" },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, jpu_dt_ids);
> +
> +static int jpu_probe(struct platform_device *pdev)
> +{
> + struct jpu *jpu;
> + struct resource *res;
> + int ret;
> +
> + /* JPEG IP abstraction struct */
> + jpu = devm_kzalloc(&pdev->dev, sizeof(struct jpu), GFP_KERNEL);
> + if (!jpu)
> + return -ENOMEM;
> +
> + mutex_init(&jpu->mutex);
> + spin_lock_init(&jpu->slock);
> + jpu->dev = &pdev->dev;
> +
> + /* memory-mapped registers */
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + jpu->regs = devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(jpu->regs))
> + return PTR_ERR(jpu->regs);
> +
> + /* interrupt service routine registration */
> + jpu->irq = ret = platform_get_irq(pdev, 0);
> + if (ret < 0) {
> + dev_err(&pdev->dev, "cannot find IRQ\n");
> + return ret;
> + }
> +
> + ret = devm_request_irq(&pdev->dev, jpu->irq, jpu_irq_handler, 0,
> + dev_name(&pdev->dev), jpu);
> + if (ret) {
> + dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpu->irq);
> + return ret;
> + }
> +
> + /* clocks */
> + jpu->clk = devm_clk_get(&pdev->dev, NULL);
> + if (IS_ERR(jpu->clk)) {
> + dev_err(&pdev->dev, "cannot get clock\n");
> + ret = PTR_ERR(jpu->clk);
> + return ret;
> + }
> +
> + /* v4l2 device */
> + ret = v4l2_device_register(&pdev->dev, &jpu->v4l2_dev);
> + if (ret) {
> + dev_err(&pdev->dev, "Failed to register v4l2 device\n");
> + goto clk_get_rollback;
> + }
> +
> + /* mem2mem device */
> + jpu->m2m_dev = v4l2_m2m_init(&jpu_m2m_ops);
> + if (IS_ERR(jpu->m2m_dev)) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to init mem2mem device\n");
> + ret = PTR_ERR(jpu->m2m_dev);
> + goto device_register_rollback;
> + }
> +
> + jpu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
> + if (IS_ERR(jpu->alloc_ctx)) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to init memory allocator\n");
> + ret = PTR_ERR(jpu->alloc_ctx);
> + goto m2m_init_rollback;
> + }
> +
> + /* JPEG encoder /dev/videoX node */
> + jpu->vfd_encoder = video_device_alloc();
> + if (!jpu->vfd_encoder) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
> + ret = -ENOMEM;
> + goto vb2_allocator_rollback;
> + }
> + strlcpy(jpu->vfd_encoder->name, JPU_M2M_NAME,
> + sizeof(jpu->vfd_encoder->name));
> + jpu->vfd_encoder->fops = &jpu_fops;
> + jpu->vfd_encoder->ioctl_ops = &jpu_ioctl_ops;
> + jpu->vfd_encoder->minor = -1;
> + jpu->vfd_encoder->release = video_device_release;
> + jpu->vfd_encoder->lock = &jpu->mutex;
> + jpu->vfd_encoder->v4l2_dev = &jpu->v4l2_dev;
> + jpu->vfd_encoder->vfl_dir = VFL_DIR_M2M;
> +
> + ret = video_register_device(jpu->vfd_encoder, VFL_TYPE_GRABBER, -1);
> + if (ret) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
> + goto enc_vdev_alloc_rollback;
> + }
> +
> + video_set_drvdata(jpu->vfd_encoder, jpu);
> + v4l2_info(&jpu->v4l2_dev, "encoder device registered as /dev/video%d\n",
> + jpu->vfd_encoder->num);
> +
> + /* JPEG decoder /dev/videoX node */
> + jpu->vfd_decoder = video_device_alloc();
> + if (!jpu->vfd_decoder) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
> + ret = -ENOMEM;
> + goto enc_vdev_register_rollback;
> + }
> + strlcpy(jpu->vfd_decoder->name, JPU_M2M_NAME,
> + sizeof(jpu->vfd_decoder->name));
> + jpu->vfd_decoder->fops = &jpu_fops;
> + jpu->vfd_decoder->ioctl_ops = &jpu_ioctl_ops;
> + jpu->vfd_decoder->minor = -1;
> + jpu->vfd_decoder->release = video_device_release;
> + jpu->vfd_decoder->lock = &jpu->mutex;
> + jpu->vfd_decoder->v4l2_dev = &jpu->v4l2_dev;
> + jpu->vfd_decoder->vfl_dir = VFL_DIR_M2M;
> +
> + ret = video_register_device(jpu->vfd_decoder, VFL_TYPE_GRABBER, -1);
> + if (ret) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
> + goto dec_vdev_alloc_rollback;
> + }
> +
> + video_set_drvdata(jpu->vfd_decoder, jpu);
> + v4l2_info(&jpu->v4l2_dev, "decoder device registered as /dev/video%d\n",
> + jpu->vfd_decoder->num);
> +
> + /* final statements & power management */
> + platform_set_drvdata(pdev, jpu);
> +
> + init_waitqueue_head(&jpu->wq);
> +
> + v4l2_info(&jpu->v4l2_dev, "Renesas JPEG codec\n");
> +
> + return 0;
> +
> +dec_vdev_alloc_rollback:
> + video_device_release(jpu->vfd_decoder);
> +
> +enc_vdev_register_rollback:
> + video_unregister_device(jpu->vfd_encoder);
> +
> +enc_vdev_alloc_rollback:
> + video_device_release(jpu->vfd_encoder);
> +
> +vb2_allocator_rollback:
> + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> +
> +m2m_init_rollback:
> + v4l2_m2m_release(jpu->m2m_dev);
> +
> +device_register_rollback:
> + v4l2_device_unregister(&jpu->v4l2_dev);
> +
> +clk_get_rollback:
> + clk_disable_unprepare(jpu->clk);
> +
> + return ret;
> +}
> +
> +static int jpu_remove(struct platform_device *pdev)
> +{
> + struct jpu *jpu = platform_get_drvdata(pdev);
> +
> + video_unregister_device(jpu->vfd_decoder);
> + video_device_release(jpu->vfd_decoder);
> + video_unregister_device(jpu->vfd_encoder);
> + video_device_release(jpu->vfd_encoder);
> + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> + v4l2_m2m_release(jpu->m2m_dev);
> + v4l2_device_unregister(&jpu->v4l2_dev);
> + clk_disable_unprepare(jpu->clk);
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int jpu_suspend(struct device *dev)
> +{
> + struct jpu *jpu = dev_get_drvdata(dev);
> +
> + if (jpu->ref_count == 0)
> + return 0;
> +
> + clk_disable_unprepare(jpu->clk);
> +
> + return 0;
> +}
> +
> +static int jpu_resume(struct device *dev)
> +{
> + struct jpu *jpu = dev_get_drvdata(dev);
> +
> + if (jpu->ref_count)
> + return 0;
> +
> + clk_prepare_enable(jpu->clk);
> +
> + return 0;
> +}
> +#endif
> +
> +static const struct dev_pm_ops jpu_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(jpu_suspend, jpu_resume)
> +};
> +
> +static struct platform_driver jpu_driver = {
> + .probe = jpu_probe,
> + .remove = jpu_remove,
> + .driver = {
> + .of_match_table = jpu_dt_ids,
> + .owner = THIS_MODULE,
> + .name = JPU_M2M_NAME,
> + .pm = &jpu_pm_ops,
> + },
> +};
> +
> +module_platform_driver(jpu_driver);
> +
> +MODULE_ALIAS("jpu");
> +MODULE_AUTHOR("Mikhail Ulianov <mikhail.ulyanov@cogentembedded.com>");
> +MODULE_DESCRIPTION("Renesas JPEG codec driver");
> +MODULE_LICENSE("GPL v2");
>
^ permalink raw reply [flat|nested] 78+ messages in thread* Re: [PATCH 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-19 13:37 ` Hans Verkuil
@ 2014-08-22 13:39 ` Mikhail Ulianov
-1 siblings, 0 replies; 78+ messages in thread
From: Mikhail Ulianov @ 2014-08-22 13:39 UTC (permalink / raw)
To: Hans Verkuil
Cc: m.chehab, horms, magnus.damm, robh+dt, pawel.moll, mark.rutland,
laurent.pinchart, linux-sh, linux-media, devicetree
Hi Hans,
Thanks for your comments.
I have a question on default width, height and sizeimage values
m2m driver should return in case when we try to run G_FMT on just
opened device. Is there any preferable values? v4l2-compliance tool
want it to be non zero, but at that moment we have no information
about output and capture, so i see few options here:
1) ignore v4l-complince error in such case
>> v4l2-test-formats.cpp(417): !pix.width || !pix.height"
2) set some default values e.g. 640x480
Do you have a suggestion?
Thanks, Mikhail.
> Hi Mikhail,
>
> I did a quick scan over the source code and I noticed a few things
> that aren't right. The easiest for you is probably to run the
> v4l2-compliance tool over your driver and it should tell you what
> needs to be fixed. The things I noticed are: querycap doesn't fill in
> bus_info (should be 'platform:<foo>') and device_caps, the vid_cap
> try_fmt fails on a wrong field setting, instead it should just set it.
>
> I also have some doubts about g_selection, but I need to look at that
> again when I have more time next week. It does look like it is not
> properly separating the capture and output streams. I would expect
> g_selection to return different things for capture and output. Note
> that v4l2-compliance doesn't yet check the selection API, so it won't
> help you there.
>
> Regards,
>
> Hans
>
> On 08/19/2014 12:50 PM, Mikhail Ulyanov wrote:
> > Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
> > ---
> > drivers/media/platform/Kconfig | 11 +
> > drivers/media/platform/Makefile | 2 +
> > drivers/media/platform/jpu.c | 1630
> > +++++++++++++++++++++++++++++++++++++++ 3 files changed, 1646
> > insertions(+) create mode 100644 drivers/media/platform/jpu.c
> >
> > diff --git a/drivers/media/platform/Kconfig
> > b/drivers/media/platform/Kconfig index 6d86646..1b8c846 100644
> > --- a/drivers/media/platform/Kconfig
> > +++ b/drivers/media/platform/Kconfig
> > @@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
> > To compile this driver as a module, choose M here: the
> > module will be called vsp1.
> >
> > +config VIDEO_RENESAS_JPU
> > + tristate "Renesas JPEG Processing Unit"
> > + depends on VIDEO_DEV && VIDEO_V4L2
> > + select VIDEOBUF2_DMA_CONTIG
> > + select V4L2_MEM2MEM_DEV
> > + ---help---
> > + This is a V4L2 driver for the Renesas JPEG Processing
> > Unit. +
> > + To compile this driver as a module, choose M here: the
> > module
> > + will be called jpu.
> > +
> > config VIDEO_TI_VPE
> > tristate "TI VPE (Video Processing Engine) driver"
> > depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX
> > diff --git a/drivers/media/platform/Makefile
> > b/drivers/media/platform/Makefile index e5269da..e438534 100644
> > --- a/drivers/media/platform/Makefile
> > +++ b/drivers/media/platform/Makefile
> > @@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) +> > soc_camera/
> > obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
> >
> > +obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
> > +
> > obj-y += davinci/
> >
> > obj-$(CONFIG_ARCH_OMAP) += omap/
> > diff --git a/drivers/media/platform/jpu.c
> > b/drivers/media/platform/jpu.c new file mode 100644
> > index 0000000..8630baf
> > --- /dev/null
> > +++ b/drivers/media/platform/jpu.c
> > @@ -0,0 +1,1630 @@
> > +/*
> > + * Author: Mikhail Ulyanov <source@cogentembedded.com>
> > + * Copyright (C) 2014 Cogent Embedded, Inc.
> > + * Copyright (C) 2014 Renesas Electronics Corporation
> > + *
> > + * This is based on the drivers/media/platform/s5p-jpu driver by
> > + * Andrzej Pietrasiewicz and Jacek Anaszewski.
> > + *
> > + * This program is free software; you can redistribute it and/or
> > modify
> > + * it under the terms of the GNU General Public License version 2
> > as
> > + * published by the Free Software Foundation.
> > + */
> > +
> > +#include <linux/clk.h>
> > +#include <linux/err.h>
> > +#include <linux/gfp.h>
> > +#include <linux/interrupt.h>
> > +#include <linux/io.h>
> > +#include <linux/kernel.h>
> > +#include <linux/module.h>
> > +#include <linux/of.h>
> > +#include <linux/of_device.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/slab.h>
> > +#include <linux/spinlock.h>
> > +#include <linux/string.h>
> > +#include <linux/videodev2.h>
> > +#include <media/v4l2-ctrls.h>
> > +#include <media/v4l2-device.h>
> > +#include <media/v4l2-fh.h>
> > +#include <media/v4l2-mem2mem.h>
> > +#include <media/v4l2-ioctl.h>
> > +#include <media/videobuf2-core.h>
> > +#include <media/videobuf2-dma-contig.h>
> > +
> > +
> > +#define JPU_M2M_NAME "jpu"
> > +
> > +#define JPU_WIDTH_MIN 16
> > +#define JPU_HEIGHT_MIN 16
> > +#define JPU_WIDTH_MAX 4096
> > +#define JPU_HEIGHT_MAX 4096
> > +
> > +#define JPU_ENCODE 0
> > +#define JPU_DECODE 1
> > +
> > +/* Flags that indicate a format can be used for capture/output */
> > +#define JPU_FMT_TYPE_OUTPUT 0
> > +#define JPU_FMT_TYPE_CAPTURE 1
> > +#define JPU_ENC_CAPTURE (1 << 0)
> > +#define JPU_ENC_OUTPUT (1 << 1)
> > +#define JPU_DEC_CAPTURE (1 << 2)
> > +#define JPU_DEC_OUTPUT (1 << 3)
> > +
> > +/*
> > + * JPEG registers and bits
> > + */
> > +
> > +/* JPEG code mode register */
> > +#define JCMOD 0x00
> > +#define JCMOD_SOI_DISABLE (1 << 8)
> > +#define JCMOD_SOI_ENABLE (0 << 8)
> > +#define JCMOD_PCTR (1 << 7)
> > +#define JCMOD_MSKIP_DISABLE (0 << 5)
> > +#define JCMOD_MSKIP_ENABLE (1 << 5)
> > +#define JCMOD_DSP_ENC (0 << 3)
> > +#define JCMOD_DSP_DEC (1 << 3)
> > +#define JCMOD_REDU (7 << 0)
> > +#define JCMOD_REDU_422 (1 << 0)
> > +#define JCMOD_REDU_420 (2 << 0)
> > +
> > +/* JPEG code command register */
> > +#define JCCMD 0x04
> > +#define JCCMD_SRST (1 << 12)
> > +#define JCCMD_BRST (1 << 7)
> > +#define JCCMD_JEND (1 << 2)
> > +#define JCCMD_JSRT (1 << 0)
> > +
> > +/* JPEG code quantanization table number register */
> > +#define JCQTN 0x0C
> > +#define JCQTN_SHIFT(t) (((t) - 1) << 1)
> > +
> > +/* JPEG code Huffman table number register */
> > +#define JCHTN 0x10
> > +#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
> > +#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
> > +
> > +#define JCDRIU 0x14 /* JPEG code DRI upper register */
> > +#define JCDRIL 0x18 /* JPEG code DRI lower register */
> > +#define JCVSZU 0x1C /* JPEG code vertical size upper
> > register */ +#define JCVSZD 0x20 /* JPEG code vertical size
> > lower register */ +#define JCHSZU 0x24 /* JPEG code
> > horizontal size upper register */ +#define JCHSZD 0x28 /*
> > JPEG code horizontal size lower register */ +#define JCSZ_MASK
> > 0xff /* JPEG code h/v size register contains only 1 byte*/ +
> > +#define JCDTCU 0x2C /* JPEG code data count upper register
> > */ +#define JCDTCM 0x30 /* JPEG code data count middle
> > register */ +#define JCDTCD 0x34 /* JPEG code data count
> > lower register */ +
> > +/* JPEG interrupt enable register */
> > +#define JINTE 0x38
> > +
> > +/* JPEG interrupt status register */
> > +#define JINTS 0x3C
> > +#define JINTS_MASK 0x7c68
> > +
> > +#define INT(n) (1 << n)
> > +
> > +#define JCDERR 0x40 /* JPEG code decode error register */
> > +
> > +/* JPEG interface encoding */
> > +#define JIFECNT 0x70
> > +#define JIFECNT_INFT_422 0
> > +#define JIFECNT_INFT_420 1
> > +#define JIFECNT_SWAP_WB (0x3 << 4)
> > +
> > +/* JPEG interface encode source Y address register 1 */
> > +#define JIFESYA1 0x74
> > +/* JPEG interface encode source C address register 1 */
> > +#define JIFESCA1 0x78
> > +/* JPEG interface encode source Y address register 2 */
> > +#define JIFESYA2 0x7C
> > +/* JPEG interface encode source C address register 2 */
> > +#define JIFESCA2 0x80
> > +/* JPEG interface encode source memory width register */
> > +#define JIFESMW 0x84
> > +/* JPEG interface encode source vertical size register */
> > +#define JIFESVSZ 0x88
> > +/* JPEG interface encode source horizontal size register */
> > +#define JIFESHSZ 0x8C
> > +/* JPEG interface encode destination address register 1 */
> > +#define JIFEDA1 0x90
> > +/* JPEG interface encode destination address register 2 */
> > +#define JIFEDA2 0x94
> > +
> > +/* JPEG decoding control register */
> > +#define JIFDCNT 0xA0
> > +#define JIFDCNT_SWAP (3 << 1)
> > +#define JIFDCNT_SWAP_NO (0 << 1)
> > +#define JIFDCNT_SWAP_BYTE (1 << 1)
> > +#define JIFDCNT_SWAP_WORD (2 << 1)
> > +#define JIFDCNT_SWAP_WB (3 << 1)
> > +
> > +/* JPEG decode source address register 1 */
> > +#define JIFDSA1 0xA4
> > +/* JPEG decode source address register 2 */
> > +#define JIFDSA2 0xA8
> > +/* JPEG decode data reload size register */
> > +#define JIFDDRSZ 0xAC
> > +/* JPEG decode data destination memory width register */
> > +#define JIFDDMW 0xB0
> > +/* JPEG decode data destination vertical size register */
> > +#define JIFDDVSZ 0xB4
> > +/* JPEG decode data destination horizontal size register */
> > +#define JIFDDHSZ 0xB8
> > +/* JPEG decode data destination Y address register 1 */
> > +#define JIFDDYA1 0xBC
> > +/* JPEG decode data destination C address register 1 */
> > +#define JIFDDCA1 0xC0
> > +/* JPEG decode data destination Y address register 2 */
> > +#define JIFDDYA2 0xC4
> > +/* JPEG decode data destination C address register 2 */
> > +#define JIFDDCA2 0xC8
> > +
> > +/* JPEG code quantization tables registers */
> > +#define JCQTBL(n) (0x10000 + (n) * 0x40)
> > +
> > +/* JPEG code Huffman table DC registers */
> > +#define JCHTBD(n) (0x10100 + (n) * 0x100)
> > +
> > +/* JPEG code Huffman table AC registers */
> > +#define JCHTBA(n) (0x10120 + (n) * 0x100)
> > +
> > +#define JPU_JPEG_HDR_SIZE 0x250
> > +
> > +enum jpu_status {
> > + JPU_OK,
> > + JPU_BUSY,
> > + JPU_ERR
> > +};
> > +
> > +/**
> > + * struct jpu - JPEG IP abstraction
> > + * @mutex: the mutex protecting this structure
> > + * @slock: spinlock protecting the device contexts
> > + * @v4l2_dev: v4l2 device for mem2mem mode
> > + * @vfd_encoder: video device node for encoder mem2mem mode
> > + * @vfd_decoder: video device node for decoder mem2mem mode
> > + * @m2m_dev: v4l2 mem2mem device data
> > + * @regs: JPEG IP registers mapping
> > + * @irq: JPEG IP irq
> > + * @clk: JPEG IP clock
> > + * @dev: JPEG IP struct device
> > + * @alloc_ctx: videobuf2 memory allocator's context
> > + * @bounds: platform specific IP limitations
> > + * @wq: waitqueue for header parsing handling
> > + * @statatus: current driver state variable
> > + * @ref_counter: reference counter
> > + */
> > +struct jpu {
> > + struct mutex mutex;
> > + spinlock_t slock;
> > +
> > + struct v4l2_device v4l2_dev;
> > + struct video_device *vfd_encoder;
> > + struct video_device *vfd_decoder;
> > + struct v4l2_m2m_dev *m2m_dev;
> > +
> > + void __iomem *regs;
> > + unsigned int irq;
> > + struct clk *clk;
> > + struct device *dev;
> > + void *alloc_ctx;
> > + struct jpu_bounds *bounds;
> > + wait_queue_head_t wq;
> > + enum jpu_status status;
> > + int ref_count;
> > +};
> > +
> > +/**
> > + * struct jpu_fmt - driver's internal format data
> > + * @name: format descritpion
> > + * @fourcc: the fourcc code, 0 if not applicable
> > + * @depth: number of bits per pixel
> > + * @h_align: horizontal alignment order (align to 2^h_align)
> > + * @v_align: vertical alignment order (align to 2^v_align)
> > + * @types: types of queue this format is applicable to
> > + */
> > +struct jpu_fmt {
> > + char *name;
> > + u32 fourcc;
> > + int depth;
> > + int h_align;
> > + int v_align;
> > + u32 types;
> > +};
> > +
> > +/**
> > + * jpu_q_data - parameters of one queue
> > + * @fmt: driver-specific format of this queue
> > + * @w: image width
> > + * @h: image height
> > + * @size: image buffer size in bytes
> > + */
> > +struct jpu_q_data {
> > + struct jpu_fmt *fmt;
> > + u32 w;
> > + u32 h;
> > + u32 size;
> > +};
> > +
> > +/**
> > + * jpu_ctx - the device context data
> > + * @jpu: JPEG IP device for this context
> > + * @mode: compression (encode) operation or decompression (decode)
> > + * @compr_quality: destination image quality in compression
> > (encode) mode
> > + * @out_q: source (output) queue information
> > + * @fh: file handler;
> > + * @hdr_parsed: set if header has been parsed during decompression
> > + * @ctrl_handler: controls handler
> > + */
> > +struct jpu_ctx {
> > + struct jpu *jpu;
> > + unsigned int mode;
> > + unsigned short compr_quality;
> > + struct jpu_q_data out_q;
> > + struct jpu_q_data cap_q;
> > + struct v4l2_fh fh;
> > + bool hdr_parsed;
> > + struct v4l2_ctrl_handler ctrl_handler;
> > +};
> > +
> > +static struct jpu_fmt jpu_formats[] = {
> > + {
> > + .name = "JPEG JFIF",
> > + .fourcc = V4L2_PIX_FMT_JPEG,
> > + .types = JPU_ENC_CAPTURE |
> > JPU_DEC_OUTPUT,
> > + },
> > + {
> > + .name = "YUV 4:2:2 semiplanar,
> > YCbCr",
> > + .fourcc = V4L2_PIX_FMT_NV16,
> > + .depth = 16,
> > + .h_align = 3,
> > + .v_align = 3,
> > + .types = JPU_ENC_OUTPUT,
> > + },
> > + {
> > + .name = "YUV 4:2:0 semiplanar,
> > YCbCr",
> > + .fourcc = V4L2_PIX_FMT_NV12,
> > + .depth = 12,
> > + .h_align = 3,
> > + .v_align = 3,
> > + .types = JPU_ENC_OUTPUT,
> > + },
> > + {
> > + .name = "YUV 4:2:2 semiplanar,
> > YCbCr",
> > + .fourcc = V4L2_PIX_FMT_NV16,
> > + .depth = 16,
> > + .h_align = 2,
> > + .v_align = 2,
> > + .types = JPU_DEC_CAPTURE,
> > + },
> > + {
> > + .name = "YUV 4:2:0 semiplanar,
> > YCbCr",
> > + .fourcc = V4L2_PIX_FMT_NV12,
> > + .depth = 12,
> > + .h_align = 2,
> > + .v_align = 2,
> > + .types = JPU_DEC_CAPTURE,
> > + },
> > +};
> > +
> > +static const u8 zigzag[] = {
> > + 0x03, 0x02, 0x0b, 0x13, 0x0a, 0x01, 0x00, 0x09,
> > + 0x12, 0x1b, 0x23, 0x1a, 0x11, 0x08, 0x07, 0x06,
> > + 0x0f, 0x10, 0x19, 0x22, 0x2b, 0x33, 0x2a, 0x21,
> > + 0x18, 0x17, 0x0e, 0x05, 0x04, 0x0d, 0x16, 0x1f,
> > + 0x20, 0x29, 0x32, 0x3b, 0x3a, 0x31, 0x28, 0x27,
> > + 0x1e, 0x15, 0x0e, 0x14, 0x10, 0x26, 0x2f, 0x30,
> > + 0x39, 0x38, 0x37, 0x2e, 0x25, 0x1c, 0x24, 0x2b,
> > + 0x36, 0x3f, 0x3e, 0x35, 0x2c, 0x34, 0x3d, 0x3c
> > +};
> > +
> > +static unsigned char hdr_blob0[] = {
> > + 0xff, 0xd8, 0xff, 0xfe, 0x00, 0x0e, 0x00, 0x00,
> > + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> > + 0x00, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x84
> > +};
> > +
> > +static unsigned char hdr_blob1[] = {
> > + 0xff, 0xc0, 0x00, 0x11, 0x08
> > +};
> > +
> > +static unsigned char hdr_blob2[] = {
> > + 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff,
> > + 0xc4, 0x01, 0xa2
> > +};
> > +
> > +static const unsigned int qtbl_lum[2][16] = {
> > + {
> > + 0x14401927, 0x322e3e44, 0x10121726, 0x26354144,
> > + 0x19171f26, 0x35414444, 0x27262635, 0x41444444,
> > + 0x32263541, 0x44444444, 0x2e354144, 0x44444444,
> > + 0x3e414444, 0x44444444, 0x44444444, 0x44444444
> > + },
> > + {
> > + 0x08060608, 0x0c0e1011, 0x06060608, 0x0a0d0c0f,
> > + 0x06060708, 0x0d0e1218, 0x0808080e, 0x0d131823,
> > + 0x0c0a0d0d, 0x141a2227, 0x0e0d0e13, 0x1a222727,
> > + 0x100c1318, 0x22272727, 0x110f1823, 0x27272727
> > + }
> > +};
> > +
> > +static const unsigned int qtbl_chr[2][16] = {
> > + {
> > + 0x15192026, 0x36444444, 0x191c1826, 0x36444444,
> > + 0x2018202b, 0x42444444, 0x26262b35, 0x44444444,
> > + 0x36424444, 0x44444444, 0x44444444, 0x44444444,
> > + 0x44444444, 0x44444444, 0x44444444, 0x44444444
> > + },
> > + {
> > + 0x0908090b, 0x0e111318, 0x080a090b, 0x0e0d1116,
> > + 0x09090d0e, 0x0d0f171a, 0x0b0b0e0e, 0x0f141a21,
> > + 0x0e0e0d0f, 0x14182127, 0x110d0f14, 0x18202727,
> > + 0x1311171a, 0x21272727, 0x18161a21, 0x27272727
> > + }
> > +};
> > +
> > +static const unsigned int hdctbl_lum[7] = {
> > + 0x00010501, 0x01010101, 0x01000000, 0x00000000,
> > + 0x00010203, 0x04050607, 0x08090a0b
> > +};
> > +
> > +static const unsigned int hdctbl_chr[7] = {
> > + 0x00030101, 0x01010101, 0x01010100, 0x00000000,
> > + 0x00010203, 0x04050607, 0x08090a0b
> > +};
> > +
> > +static const unsigned int hactbl_lum[45] = {
> > + 0x00020103, 0x03020403, 0x05050404, 0x0000017d,
> > + 0x01020300, 0x04110512, 0x21314106, 0x13516107,
> > + 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
> > + 0x24336272, 0x82090a16, 0x1718191a, 0x25262728,
> > + 0x292a3435, 0x36373839, 0x3a434445, 0x46474849,
> > + 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
> > + 0x6a737475, 0x76777879, 0x7a838485, 0x86878889,
> > + 0x8a929394, 0x95969798, 0x999aa2a3, 0xa4a5a6a7,
> > + 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
> > + 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2,
> > + 0xe3e4e5e6, 0xe7e8e9ea, 0xf1f2f3f4, 0xf5f6f7f8,
> > + 0xf9fa0000
> > +};
> > +
> > +static const unsigned int hactbl_chr[45] = {
> > + 0x00020102, 0x04040304, 0x07050404, 0x00010277,
> > + 0x00010203, 0x11040521, 0x31061241, 0x51076171,
> > + 0x13223281, 0x08144291, 0xa1b1c109, 0x233352f0,
> > + 0x156372d1, 0x0a162434, 0xe125f117, 0x18191a26,
> > + 0x2728292a, 0x35363738, 0x393a4344, 0x45464748,
> > + 0x494a5354, 0x55565758, 0x595a6364, 0x65666768,
> > + 0x696a7374, 0x75767778, 0x797a8283, 0x84858687,
> > + 0x88898a92, 0x93949596, 0x9798999a, 0xa2a3a4a5,
> > + 0xa6a7a8a9, 0xaab2b3b4, 0xb5b6b7b8, 0xb9bac2c3,
> > + 0xc4c5c6c7, 0xc8c9cad2, 0xd3d4d5d6, 0xd7d8d9da,
> > + 0xe2e3e4e5, 0xe6e7e8e9, 0xeaf2f3f4, 0xf5f6f7f8,
> > + 0xf9fa0000
> > +};
> > +
> > +static struct jpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
> > +{
> > + return container_of(c->handler, struct jpu_ctx,
> > ctrl_handler); +}
> > +
> > +static struct jpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
> > +{
> > + return container_of(fh, struct jpu_ctx, fh);
> > +}
> > +
> > +static void jpu_set_tbl(void __iomem *regs, const unsigned int
> > *tbl,
> > + int len) {
> > + unsigned int i;
> > +
> > + for (i = 0; i < len; i++)
> > + iowrite32(tbl[i], regs + (i << 2));
> > +}
> > +
> > +static void jpu_set_qtbl(void __iomem *regs, int quality)
> > +{
> > + jpu_set_tbl(regs + JCQTBL(0), qtbl_lum[quality],
> > + ARRAY_SIZE(qtbl_lum[quality]));
> > + jpu_set_tbl(regs + JCQTBL(1), qtbl_chr[quality],
> > + ARRAY_SIZE(qtbl_chr[quality]));
> > +}
> > +
> > +static void jpu_set_htbl(void __iomem *regs)
> > +{
> > + jpu_set_tbl(regs + JCHTBD(0), hdctbl_lum,
> > ARRAY_SIZE(hdctbl_lum));
> > + jpu_set_tbl(regs + JCHTBD(1), hdctbl_chr,
> > ARRAY_SIZE(hdctbl_chr));
> > + jpu_set_tbl(regs + JCHTBA(0), hactbl_lum,
> > ARRAY_SIZE(hactbl_lum));
> > + jpu_set_tbl(regs + JCHTBA(1), hactbl_chr,
> > ARRAY_SIZE(hactbl_chr)); +}
> > +
> > +static void jpu_int_clear(void __iomem *regs, unsigned int
> > int_status) +{
> > + iowrite32(~int_status & JINTS_MASK, regs + JINTS);
> > +
> > + if (int_status & (INT(6) | INT(5) | INT(3)))
> > + iowrite32(JCCMD_JEND, regs + JCCMD);
> > +}
> > +
> > +static void jpu_reset(void __iomem *regs)
> > +{
> > + iowrite32(JCCMD_SRST, regs + JCCMD);
> > + while ((ioread32(regs + JCCMD) & JCCMD_SRST) != 0)
> > + cpu_relax();
> > +}
> > +
> > +/*
> > + *
> > ======================================
> > + * video ioctl operations
> > + *
> > ======================================
> > + */
> > +static void put_byte(unsigned long *p, u8 v)
> > +{
> > + u8 *addr = (u8 *)*p;
> > +
> > + *addr = v;
> > + (*p)++;
> > +}
> > +
> > +static void put_short_be(unsigned long *p, u16 v)
> > +{
> > + u16 *addr = (u16 *)*p;
> > +
> > + *addr = cpu_to_be16(v);
> > + *p += 2;
> > +}
> > +
> > +static void put_word_be(unsigned long *p, u32 v)
> > +{
> > + u32 *addr = (u32 *)*p;
> > +
> > + *addr = cpu_to_be32(v);
> > + *p += 4;
> > +}
> > +
> > +static void put_blob_byte(unsigned long *p, const unsigned char
> > *blob,
> > + unsigned int len)
> > +{
> > + int i;
> > +
> > + for (i = 0; i < len; i++)
> > + put_byte(p, blob[i]);
> > +}
> > +
> > +static void put_qtbl(unsigned long *p, unsigned char id,
> > + const unsigned int *qtbl)
> > +{
> > + int i;
> > +
> > + put_byte(p, id);
> > + for (i = 0; i < ARRAY_SIZE(zigzag); i++)
> > + put_byte(p, *((u8 *)qtbl + zigzag[i]));
> > +}
> > +
> > +static void put_htbl(unsigned long *p, unsigned char tc,
> > + const unsigned int *htbl, unsigned int len)
> > +{
> > + int i;
> > +
> > + put_byte(p, tc);
> > + for (i = 0; i < len; i++)
> > + put_word_be(p, htbl[i]);
> > +}
> > +
> > +static void jpu_generate_hdr(struct jpu_q_data *q, int quality,
> > void *buffer) +{
> > + /* SOI(2) - DQT(134 / 2 tables) - SOF0(19) - DHT(420 / 2
> > tables) */
> > + unsigned long p = (unsigned long)buffer;
> > +
> > + put_blob_byte(&p, hdr_blob0, ARRAY_SIZE(hdr_blob0));
> > +
> > + put_qtbl(&p, 0x00, qtbl_lum[quality]);
> > + put_qtbl(&p, 0x01, qtbl_chr[quality]);
> > +
> > + put_blob_byte(&p, hdr_blob1, ARRAY_SIZE(hdr_blob1));
> > +
> > + put_short_be(&p, q->h);
> > + put_short_be(&p, q->w);
> > +
> > + put_byte(&p, 0x03);
> > + put_byte(&p, 0x01);
> > +
> > + if (q->fmt->fourcc = V4L2_PIX_FMT_NV16)
> > + put_byte(&p, 0x21);
> > + else
> > + put_byte(&p, 0x22);
> > +
> > + put_blob_byte(&p, hdr_blob2, ARRAY_SIZE(hdr_blob2));
> > +
> > + put_htbl(&p, 0x00, hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
> > + put_htbl(&p, 0x10, hactbl_lum, ARRAY_SIZE(hactbl_lum));
> > + p -= 2;
> > +
> > + put_htbl(&p, 0x01, hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
> > + put_htbl(&p, 0x11, hactbl_chr, ARRAY_SIZE(hactbl_chr));
> > +}
> > +
> > +static int jpu_querycap(struct file *file, void *priv,
> > + struct v4l2_capability *cap)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > +
> > + if (ctx->mode = JPU_ENCODE) {
> > + strlcpy(cap->driver, JPU_M2M_NAME " encoder",
> > + sizeof(cap->driver));
> > + strlcpy(cap->card, JPU_M2M_NAME " encoder",
> > + sizeof(cap->card));
> > + } else {
> > + strlcpy(cap->driver, JPU_M2M_NAME " decoder",
> > + sizeof(cap->driver));
> > + strlcpy(cap->card, JPU_M2M_NAME " decoder",
> > + sizeof(cap->card));
> > + }
> > + cap->bus_info[0] = 0;
> > + cap->capabilities = V4L2_CAP_STREAMING |
> > V4L2_CAP_VIDEO_M2M |
> > + V4L2_CAP_VIDEO_CAPTURE |
> > V4L2_CAP_VIDEO_OUTPUT;
> > + return 0;
> > +}
> > +
> > +static struct jpu_fmt *jpu_find_format(unsigned int mode, u32
> > pixelformat,
> > + unsigned int fmt_type)
> > +{
> > + unsigned int k, fmt_flag;
> > +
> > + if (mode = JPU_ENCODE)
> > + fmt_flag = (fmt_type = JPU_FMT_TYPE_OUTPUT) ?
> > JPU_ENC_OUTPUT :
> > +
> > JPU_ENC_CAPTURE;
> > + else
> > + fmt_flag = (fmt_type = JPU_FMT_TYPE_OUTPUT) ?
> > JPU_DEC_OUTPUT :
> > +
> > JPU_DEC_CAPTURE; +
> > + for (k = 0; k < ARRAY_SIZE(jpu_formats); k++) {
> > + struct jpu_fmt *fmt = &jpu_formats[k];
> > +
> > + if (fmt->fourcc = pixelformat &&
> > + fmt->types & fmt_flag) {
> > + return fmt;
> > + }
> > + }
> > +
> > + return NULL;
> > +}
> > +
> > +static int jpu_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
> > +{
> > + int i, num = 0;
> > +
> > + for (i = 0; i < ARRAY_SIZE(jpu_formats); ++i) {
> > + if (jpu_formats[i].types & type) {
> > + /* index-th format of type type found ? */
> > + if (num = f->index)
> > + break;
> > + /*
> > + * Correct type but haven't reached our
> > index yet,
> > + * just increment per-type index
> > + */
> > + ++num;
> > + }
> > + }
> > +
> > + /* Format not found */
> > + if (i >= ARRAY_SIZE(jpu_formats))
> > + return -EINVAL;
> > +
> > + strlcpy(f->description, jpu_formats[i].name,
> > sizeof(f->description));
> > + f->pixelformat = jpu_formats[i].fourcc;
> > +
> > + return 0;
> > +}
> > +
> > +static int jpu_enum_fmt_vid_cap(struct file *file, void *priv,
> > + struct v4l2_fmtdesc *f)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > +
> > + if (ctx->mode = JPU_ENCODE)
> > + return jpu_enum_fmt(f, JPU_ENC_CAPTURE);
> > +
> > + return jpu_enum_fmt(f, JPU_DEC_CAPTURE);
> > +}
> > +
> > +static int jpu_enum_fmt_vid_out(struct file *file, void *priv,
> > + struct v4l2_fmtdesc *f)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > +
> > + if (ctx->mode = JPU_ENCODE)
> > + return jpu_enum_fmt(f, JPU_ENC_OUTPUT);
> > +
> > + return jpu_enum_fmt(f, JPU_DEC_OUTPUT);
> > +}
> > +
> > +static struct jpu_q_data *jpu_get_q_data(struct jpu_ctx *ctx,
> > + enum v4l2_buf_type type)
> > +{
> > + switch (type) {
> > + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> > + return &ctx->out_q;
> > + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> > + return &ctx->cap_q;
> > + default:
> > + BUG();
> > + }
> > +}
> > +
> > +static int jpu_g_fmt(struct file *file, void *priv, struct
> > v4l2_format *f) +{
> > + struct vb2_queue *vq;
> > + struct jpu_q_data *q_data;
> > + struct v4l2_pix_format *pix = &f->fmt.pix;
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > +
> > + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> > + if (!vq)
> > + return -EINVAL;
> > +
> > + if (f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE &&
> > + ctx->mode = JPU_DECODE && !ctx->hdr_parsed)
> > + return -EINVAL;
> > +
> > + q_data = jpu_get_q_data(ctx, f->type);
> > +
> > + pix->width = q_data->w;
> > + pix->height = q_data->h;
> > + pix->field = V4L2_FIELD_NONE;
> > + pix->pixelformat = q_data->fmt->fourcc;
> > + pix->bytesperline = 0;
> > + if (pix->pixelformat != V4L2_PIX_FMT_JPEG)
> > + pix->bytesperline = q_data->w;
> > + pix->sizeimage = q_data->size;
> > +
> > + return 0;
> > +}
> > +
> > +
> > +static void jpu_bound_align_image(u32 *w, unsigned int wmin,
> > unsigned int wmax,
> > + unsigned int walign, u32 *h,
> > + unsigned int hmin, unsigned int
> > hmax,
> > + unsigned int halign)
> > +{
> > + int width, height, w_step, h_step;
> > +
> > + width = *w;
> > + height = *h;
> > +
> > + w_step = 1 << walign;
> > + h_step = 1 << halign;
> > + v4l_bound_align_image(w, wmin, wmax, walign, h, hmin,
> > hmax, halign, 3); +
> > + if (*w < width && *w + w_step < wmax)
> > + *w += w_step;
> > + if (*h < height && *h + h_step < hmax)
> > + *h += h_step;
> > +}
> > +
> > +static int jpu_vidioc_try_fmt(struct v4l2_format *f, struct
> > jpu_fmt *fmt,
> > + struct jpu_ctx *ctx)
> > +{
> > + struct v4l2_pix_format *pix = &f->fmt.pix;
> > +
> > + if (pix->field = V4L2_FIELD_ANY)
> > + pix->field = V4L2_FIELD_NONE;
> > + else if (pix->field != V4L2_FIELD_NONE)
> > + return -EINVAL;
> > +
> > + /*
> > + * V4L2 specification suggests the driver corrects the
> > format struct
> > + * if any of the dimensions is unsupported
> > + */
> > + jpu_bound_align_image(&pix->width, JPU_WIDTH_MIN,
> > JPU_WIDTH_MAX,
> > + fmt->h_align, &pix->height,
> > JPU_HEIGHT_MIN,
> > + JPU_HEIGHT_MAX, fmt->v_align);
> > +
> > + if (fmt->fourcc = V4L2_PIX_FMT_JPEG) {
> > + if (pix->sizeimage <= 0)
> > + pix->sizeimage = PAGE_SIZE;
> > + pix->bytesperline = 0;
> > + } else {
> > + u32 bpl = pix->bytesperline;
> > +
> > + if (bpl < pix->width)
> > + bpl = pix->width;
> > +
> > + pix->bytesperline = bpl;
> > + pix->sizeimage = (pix->width * pix->height *
> > fmt->depth) >> 3;
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static int jpu_try_fmt_vid_cap(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > + struct jpu_fmt *fmt;
> > +
> > + fmt = jpu_find_format(ctx->mode, f->fmt.pix.pixelformat,
> > + JPU_FMT_TYPE_CAPTURE);
> > + if (!fmt) {
> > + v4l2_err(&ctx->jpu->v4l2_dev,
> > + "Fourcc format (0x%08x) invalid.\n",
> > + f->fmt.pix.pixelformat);
> > + return -EINVAL;
> > + }
> > +
> > + return jpu_vidioc_try_fmt(f, fmt, ctx);
> > +}
> > +
> > +static int jpu_try_fmt_vid_out(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > + struct jpu_fmt *fmt;
> > +
> > + fmt = jpu_find_format(ctx->mode, f->fmt.pix.pixelformat,
> > + JPU_FMT_TYPE_OUTPUT);
> > + if (!fmt) {
> > + v4l2_err(&ctx->jpu->v4l2_dev,
> > + "Fourcc format (0x%08x) invalid.\n",
> > + f->fmt.pix.pixelformat);
> > + return -EINVAL;
> > + }
> > +
> > + return jpu_vidioc_try_fmt(f, fmt, ctx);
> > +}
> > +
> > +static int jpu_s_fmt(struct jpu_ctx *ctx, struct v4l2_format *f)
> > +{
> > + struct vb2_queue *vq;
> > + struct jpu_q_data *q_data;
> > + struct v4l2_pix_format *pix = &f->fmt.pix;
> > + unsigned int f_type;
> > +
> > + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> > + if (!vq)
> > + return -EINVAL;
> > +
> > + q_data = jpu_get_q_data(ctx, f->type);
> > +
> > + if (vb2_is_busy(vq)) {
> > + v4l2_err(&ctx->jpu->v4l2_dev, "%s queue busy\n",
> > __func__);
> > + return -EBUSY;
> > + }
> > +
> > + f_type = V4L2_TYPE_IS_OUTPUT(f->type) ?
> > JPU_FMT_TYPE_OUTPUT :
> > +
> > JPU_FMT_TYPE_CAPTURE; +
> > + q_data->fmt = jpu_find_format(ctx->mode, pix->pixelformat,
> > f_type);
> > + q_data->w = pix->width;
> > + q_data->h = pix->height;
> > + if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
> > + q_data->size = q_data->w * q_data->h *
> > q_data->fmt->depth >> 3;
> > + else
> > + q_data->size = pix->sizeimage;
> > +
> > + return 0;
> > +}
> > +
> > +static int jpu_s_fmt_vid_cap(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + int ret;
> > +
> > + ret = jpu_try_fmt_vid_cap(file, priv, f);
> > + if (ret)
> > + return ret;
> > +
> > + return jpu_s_fmt(fh_to_ctx(priv), f);
> > +}
> > +
> > +static int jpu_s_fmt_vid_out(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + int ret;
> > +
> > + ret = jpu_try_fmt_vid_out(file, priv, f);
> > + if (ret)
> > + return ret;
> > +
> > + return jpu_s_fmt(fh_to_ctx(priv), f);
> > +}
> > +
> > +
> > +static int jpu_g_selection(struct file *file, void *priv,
> > + struct v4l2_selection *s)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > +
> > + if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
> > + s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> > + return -EINVAL;
> > +
> > + /* For JPEG blob active = default = bounds */
> > + switch (s->target) {
> > + case V4L2_SEL_TGT_CROP:
> > + case V4L2_SEL_TGT_CROP_BOUNDS:
> > + case V4L2_SEL_TGT_CROP_DEFAULT:
> > + case V4L2_SEL_TGT_COMPOSE:
> > + case V4L2_SEL_TGT_COMPOSE_DEFAULT:
> > + s->r.width = ctx->out_q.w;
> > + s->r.height = ctx->out_q.h;
> > + break;
> > + case V4L2_SEL_TGT_COMPOSE_BOUNDS:
> > + case V4L2_SEL_TGT_COMPOSE_PADDED:
> > + s->r.width = ctx->cap_q.w;
> > + s->r.height = ctx->cap_q.h;
> > + break;
> > + default:
> > + return -EINVAL;
> > + }
> > + s->r.left = 0;
> > + s->r.top = 0;
> > + return 0;
> > +}
> > +
> > +/*
> > + * V4L2 controls
> > + */
> > +static int jpu_s_ctrl(struct v4l2_ctrl *ctrl)
> > +{
> > + struct jpu_ctx *ctx = ctrl_to_ctx(ctrl);
> > + unsigned long flags;
> > +
> > + spin_lock_irqsave(&ctx->jpu->slock, flags);
> > +
> > + if (ctrl->id = V4L2_CID_JPEG_COMPRESSION_QUALITY)
> > + ctx->compr_quality = ctrl->val;
> > +
> > + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> > + return 0;
> > +}
> > +
> > +static const struct v4l2_ctrl_ops jpu_ctrl_ops = {
> > + .s_ctrl = jpu_s_ctrl,
> > +};
> > +
> > +
> > +static const struct v4l2_ioctl_ops jpu_ioctl_ops = {
> > + .vidioc_querycap = jpu_querycap,
> > +
> > + .vidioc_enum_fmt_vid_cap = jpu_enum_fmt_vid_cap,
> > + .vidioc_enum_fmt_vid_out = jpu_enum_fmt_vid_out,
> > +
> > + .vidioc_g_fmt_vid_cap = jpu_g_fmt,
> > + .vidioc_g_fmt_vid_out = jpu_g_fmt,
> > +
> > + .vidioc_try_fmt_vid_cap > > jpu_try_fmt_vid_cap,
> > + .vidioc_try_fmt_vid_out > > jpu_try_fmt_vid_out, +
> > + .vidioc_s_fmt_vid_cap = jpu_s_fmt_vid_cap,
> > + .vidioc_s_fmt_vid_out = jpu_s_fmt_vid_out,
> > +
> > + .vidioc_reqbufs > > v4l2_m2m_ioctl_reqbufs,
> > + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
> > + .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
> > + .vidioc_dqbuf > > v4l2_m2m_ioctl_dqbuf,
> > + .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> > + .vidioc_streamoff > > v4l2_m2m_ioctl_streamoff, +
> > + .vidioc_g_selection = jpu_g_selection,
> > +};
> > +
> > +static int jpu_controls_create(struct jpu_ctx *ctx)
> > +{
> > + struct v4l2_ctrl *ctrl;
> > +
> > + v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
> > +
> > + if (ctx->mode = JPU_ENCODE) {
> > + v4l2_ctrl_new_std(&ctx->ctrl_handler,
> > &jpu_ctrl_ops,
> > +
> > V4L2_CID_JPEG_COMPRESSION_QUALITY,
> > + 0, 1, 1, 1);
> > + }
> > +
> > + if (ctx->ctrl_handler.error)
> > + return ctx->ctrl_handler.error;
> > +
> > + if (ctx->mode = JPU_DECODE)
> > + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
> > + V4L2_CTRL_FLAG_READ_ONLY;
> > +
> > + return 0;
> > +}
> > +
> > +/*
> > + *
> > ======================================
> > + * Queue operations
> > + *
> > ======================================
> > + */
> > +static int jpu_queue_setup(struct vb2_queue *vq,
> > + const struct v4l2_format *fmt,
> > + unsigned int *nbuffers, unsigned int
> > *nplanes,
> > + unsigned int sizes[], void
> > *alloc_ctxs[]) +{
> > + struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
> > + struct jpu_q_data *q_data;
> > + unsigned int size, count = *nbuffers;
> > +
> > + q_data = jpu_get_q_data(ctx, vq->type);
> > +
> > + size = q_data->size;
> > +
> > + /*
> > + * Header is parsed during decoding and parsed information
> > stored
> > + * in the context so we do not allow another buffer to
> > overwrite it
> > + */
> > + if (ctx->mode = JPU_DECODE)
> > + count = 1;
> > +
> > + *nbuffers = count;
> > + *nplanes = 1;
> > + sizes[0] = size;
> > + alloc_ctxs[0] = ctx->jpu->alloc_ctx;
> > +
> > + return 0;
> > +}
> > +
> > +static int jpu_buf_prepare(struct vb2_buffer *vb)
> > +{
> > + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> > + struct jpu_q_data *q_data;
> > +
> > + q_data = jpu_get_q_data(ctx, vb->vb2_queue->type);
> > +
> > + if (vb2_plane_size(vb, 0) < q_data->size) {
> > + pr_err("%s: data will not fit into plane (%lu <
> > %lu)\n",
> > + __func__, vb2_plane_size(vb, 0),
> > (long)q_data->size);
> > + return -EINVAL;
> > + }
> > +
> > + vb2_set_plane_payload(vb, 0, q_data->size);
> > +
> > + return 0;
> > +}
> > +
> > +static void jpu_buf_queue(struct vb2_buffer *vb)
> > +{
> > + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> > +
> > + if (ctx->mode = JPU_DECODE &&
> > + vb->vb2_queue->type = V4L2_BUF_TYPE_VIDEO_OUTPUT)
> > {
> > + struct jpu_q_data *q_data;
> > + struct jpu *jpu = ctx->jpu;
> > + unsigned int subsampling, w_out, h_out, w_cap,
> > h_cap;
> > + unsigned long src_addr, flags;
> > +
> > + src_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
> > +
> > + jpu_reset(jpu->regs);
> > +
> > + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs +
> > JCMOD);
> > + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> > + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> > +
> > + spin_lock_irqsave(&jpu->slock, flags);
> > + jpu->status = JPU_BUSY;
> > + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> > +
> > + iowrite32(INT(3), jpu->regs + JINTE);
> > + iowrite32(src_addr, jpu->regs + JIFDSA1);
> > + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> > +
> > + if (wait_event_interruptible_timeout(jpu->wq,
> > +
> > jpu->status != JPU_BUSY,
> > +
> > msecs_to_jiffies(100)) > 0
> > + &&
> > jpu->status = JPU_OK)
> > + ctx->hdr_parsed = true;
> > +
> > + w_out = ioread32(jpu->regs + JCHSZU) << 8 |
> > + ioread32(jpu->regs + JCHSZD);
> > +
> > + h_out = ioread32(jpu->regs + JCVSZU) << 8 |
> > + ioread32(jpu->regs + JCVSZD);
> > +
> > + w_cap = ioread32(jpu->regs + JIFDDHSZ);
> > + h_cap = ioread32(jpu->regs + JIFDDVSZ);
> > +
> > + switch (ioread32(jpu->regs + JCMOD) & JCMOD_REDU) {
> > + case JCMOD_REDU_422:
> > + subsampling = V4L2_PIX_FMT_NV16;
> > + break;
> > + case JCMOD_REDU_420:
> > + subsampling = V4L2_PIX_FMT_NV12;
> > + break;
> > + default:
> > + subsampling = 0;
> > + }
> > +
> > + if (!ctx->hdr_parsed || !subsampling || w_out >
> > JPU_WIDTH_MAX ||
> > + w_out < JPU_WIDTH_MIN || h_out >
> > JPU_HEIGHT_MAX ||
> > + h_out < JPU_HEIGHT_MIN) {
> > + pr_err("incompatible or corrupted JPEG
> > data\n");
> > + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
> > + return;
> > + }
> > +
> > + q_data = &ctx->out_q;
> > + q_data->w = w_out;
> > + q_data->h = h_out;
> > +
> > + q_data = &ctx->cap_q;
> > + q_data->w = w_cap;
> > + q_data->h = h_cap;
> > +
> > + q_data->fmt = jpu_find_format(JPU_DECODE,
> > subsampling,
> > +
> > JPU_FMT_TYPE_CAPTURE); +
> > + q_data->size > > + (q_data->w * q_data->h *
> > q_data->fmt->depth) >> 3;
> > + }
> > +
> > + if (ctx->fh.m2m_ctx)
> > + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
> > +}
> > +
> > +static int jpu_start_streaming(struct vb2_queue *q, unsigned int
> > count) +{
> > + return 0;
> > +}
> > +
> > +static void jpu_stop_streaming(struct vb2_queue *q)
> > +{
> > +}
> > +
> > +static struct vb2_ops jpu_qops = {
> > + .queue_setup = jpu_queue_setup,
> > + .buf_prepare = jpu_buf_prepare,
> > + .buf_queue = jpu_buf_queue,
> > + .wait_prepare = vb2_ops_wait_prepare,
> > + .wait_finish = vb2_ops_wait_finish,
> > + .start_streaming = jpu_start_streaming,
> > + .stop_streaming = jpu_stop_streaming,
> > +};
> > +
> > +static int jpu_queue_init(void *priv, struct vb2_queue *src_vq,
> > + struct vb2_queue *dst_vq)
> > +{
> > + struct jpu_ctx *ctx = priv;
> > + int ret;
> > +
> > + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
> > + src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
> > + src_vq->drv_priv = ctx;
> > + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> > + src_vq->ops = &jpu_qops;
> > + src_vq->mem_ops = &vb2_dma_contig_memops;
> > + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> > + src_vq->lock = &ctx->jpu->mutex;
> > +
> > + ret = vb2_queue_init(src_vq);
> > + if (ret)
> > + return ret;
> > +
> > + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> > + dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
> > + dst_vq->drv_priv = ctx;
> > + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> > + dst_vq->ops = &jpu_qops;
> > + dst_vq->mem_ops = &vb2_dma_contig_memops;
> > + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> > + dst_vq->lock = &ctx->jpu->mutex;
> > +
> > + return vb2_queue_init(dst_vq);
> > +}
> > +
> > +/*
> > + *
> > ======================================
> > + * Device file operations
> > + *
> > ======================================
> > + */
> > +static int jpu_open(struct file *file)
> > +{
> > + struct jpu *jpu = video_drvdata(file);
> > + struct video_device *vfd = video_devdata(file);
> > + struct jpu_ctx *ctx;
> > + struct jpu_fmt *out_fmt, *cap_fmt;
> > + int ret = 0;
> > +
> > + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> > + if (!ctx)
> > + return -ENOMEM;
> > +
> > + if (mutex_lock_interruptible(&jpu->mutex)) {
> > + ret = -ERESTARTSYS;
> > + goto free;
> > + }
> > +
> > + v4l2_fh_init(&ctx->fh, vfd);
> > + ctx->fh.ctrl_handler = &ctx->ctrl_handler;
> > + file->private_data = &ctx->fh;
> > + v4l2_fh_add(&ctx->fh);
> > +
> > + ctx->jpu = jpu;
> > + if (vfd = jpu->vfd_encoder) {
> > + ctx->mode = JPU_ENCODE;
> > + out_fmt = jpu_find_format(ctx->mode,
> > V4L2_PIX_FMT_NV16,
> > + JPU_FMT_TYPE_OUTPUT);
> > + cap_fmt = jpu_find_format(ctx->mode,
> > V4L2_PIX_FMT_JPEG,
> > + JPU_FMT_TYPE_CAPTURE);
> > +
> > + } else {
> > + ctx->mode = JPU_DECODE;
> > + out_fmt = jpu_find_format(ctx->mode,
> > V4L2_PIX_FMT_JPEG,
> > + JPU_FMT_TYPE_OUTPUT);
> > + cap_fmt = jpu_find_format(ctx->mode,
> > V4L2_PIX_FMT_NV16,
> > + JPU_FMT_TYPE_CAPTURE);
> > + }
> > +
> > + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpu->m2m_dev, ctx,
> > jpu_queue_init);
> > + if (IS_ERR(ctx->fh.m2m_ctx)) {
> > + ret = PTR_ERR(ctx->fh.m2m_ctx);
> > + goto error;
> > + }
> > +
> > + ctx->out_q.fmt = out_fmt;
> > + ctx->cap_q.fmt = cap_fmt;
> > +
> > + ret = jpu_controls_create(ctx);
> > + if (ret < 0)
> > + goto error;
> > +
> > + if (jpu->ref_count = 0) {
> > + ret = clk_prepare_enable(jpu->clk);
> > + if (ret < 0)
> > + goto error;
> > + }
> > +
> > + jpu->ref_count++;
> > +
> > + mutex_unlock(&jpu->mutex);
> > + return 0;
> > +
> > +error:
> > + v4l2_fh_del(&ctx->fh);
> > + v4l2_fh_exit(&ctx->fh);
> > + mutex_unlock(&jpu->mutex);
> > +free:
> > + kfree(ctx);
> > + return ret;
> > +}
> > +
> > +static int jpu_release(struct file *file)
> > +{
> > + struct jpu *jpu = video_drvdata(file);
> > + struct jpu_ctx *ctx = fh_to_ctx(file->private_data);
> > +
> > + mutex_lock(&jpu->mutex);
> > + if (--jpu->ref_count = 0)
> > + clk_disable_unprepare(jpu->clk);
> > + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> > + v4l2_ctrl_handler_free(&ctx->ctrl_handler);
> > + v4l2_fh_del(&ctx->fh);
> > + v4l2_fh_exit(&ctx->fh);
> > + kfree(ctx);
> > + mutex_unlock(&jpu->mutex);
> > +
> > + return 0;
> > +}
> > +
> > +static const struct v4l2_file_operations jpu_fops = {
> > + .owner = THIS_MODULE,
> > + .open = jpu_open,
> > + .release = jpu_release,
> > + .unlocked_ioctl = video_ioctl2,
> > + .poll = v4l2_m2m_fop_poll,
> > + .mmap = v4l2_m2m_fop_mmap,
> > +};
> > +
> > +/*
> > + *
> > ======================================
> > + * mem2mem callbacks
> > + *
> > ======================================
> > + */
> > +static void jpu_device_run(void *priv)
> > +{
> > + struct jpu_ctx *ctx = priv;
> > + struct jpu *jpu = ctx->jpu;
> > + struct vb2_buffer *src_buf, *dst_buf;
> > + unsigned long src_addr, dst_addr, flags;
> > + void *dst_vaddr;
> > + unsigned int w, h;
> > +
> > + spin_lock_irqsave(&ctx->jpu->slock, flags);
> > +
> > + src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> > + dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> > + src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
> > + dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
> > + dst_vaddr = vb2_plane_vaddr(dst_buf, 0);
> > +
> > + jpu_reset(jpu->regs);
> > +
> > + if (ctx->mode = JPU_ENCODE) {
> > + unsigned int redu, inft;
> > +
> > + w = ctx->out_q.w;
> > + h = ctx->out_q.h;
> > +
> > + jpu_generate_hdr(&ctx->out_q, ctx->compr_quality,
> > dst_vaddr); +
> > + if (ctx->out_q.fmt->fourcc = V4L2_PIX_FMT_NV12) {
> > + redu = JCMOD_REDU_420;
> > + inft = JIFECNT_INFT_420;
> > + } else {
> > + redu = JCMOD_REDU_422;
> > + inft = JIFECNT_INFT_422;
> > + }
> > +
> > + /* the only no marker mode works for encoding */
> > + iowrite32(JCMOD_DSP_ENC | JCMOD_PCTR | redu |
> > JCMOD_SOI_ENABLE |
> > + JCMOD_MSKIP_ENABLE, jpu->regs + JCMOD);
> > +
> > + iowrite32(JIFECNT_SWAP_WB | inft, jpu->regs +
> > JIFECNT);
> > + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> > + iowrite32(INT(10), jpu->regs + JINTE);
> > +
> > + /* Y and C components source addresses */
> > + iowrite32(src_addr, jpu->regs + JIFESYA1);
> > + iowrite32(src_addr + w * h, jpu->regs + JIFESCA1);
> > +
> > + /* memory width */
> > + iowrite32(w, jpu->regs + JIFESMW);
> > +
> > + iowrite32((w >> 8) & JCSZ_MASK, jpu->regs +
> > JCHSZU);
> > + iowrite32(w & JCSZ_MASK, jpu->regs + JCHSZD);
> > +
> > + iowrite32((h >> 8) & JCSZ_MASK, jpu->regs +
> > JCVSZU);
> > + iowrite32(h & JCSZ_MASK, jpu->regs + JCVSZD);
> > +
> > + iowrite32(w, jpu->regs + JIFESHSZ);
> > + iowrite32(h, jpu->regs + JIFESVSZ);
> > +
> > + iowrite32(dst_addr + JPU_JPEG_HDR_SIZE, jpu->regs
> > + JIFEDA1); +
> > + iowrite32(0 << JCQTN_SHIFT(1) | 1 <<
> > JCQTN_SHIFT(2) |
> > + 1 << JCQTN_SHIFT(3), jpu->regs + JCQTN);
> > +
> > + iowrite32(0 << JCHTN_AC_SHIFT(1) | 0 <<
> > JCHTN_DC_SHIFT(1) |
> > + 1 << JCHTN_AC_SHIFT(2) | 1 <<
> > JCHTN_DC_SHIFT(2) |
> > + 1 << JCHTN_AC_SHIFT(3) | 1 <<
> > JCHTN_DC_SHIFT(3),
> > + jpu->regs + JCHTN);
> > +
> > + jpu_set_qtbl(jpu->regs, ctx->compr_quality);
> > + jpu_set_htbl(jpu->regs);
> > + } else {
> > + w = ctx->cap_q.w;
> > + h = ctx->cap_q.h;
> > +
> > + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs +
> > JCMOD);
> > + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> > + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> > + iowrite32(INT(10) | INT(7) | INT(6) | INT(5),
> > + jpu->regs + JINTE);
> > + iowrite32(src_addr, jpu->regs + JIFDSA1);
> > + iowrite32(w, jpu->regs + JIFDDMW);
> > + iowrite32(dst_addr, jpu->regs + JIFDDYA1);
> > + iowrite32(dst_addr + w * h, jpu->regs + JIFDDCA1);
> > + }
> > +
> > + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> > + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> > +}
> > +
> > +static int jpu_job_ready(void *priv)
> > +{
> > + struct jpu_ctx *ctx = priv;
> > +
> > + if (ctx->mode = JPU_DECODE)
> > + return ctx->hdr_parsed;
> > + return 1;
> > +}
> > +
> > +static void jpu_job_abort(void *priv)
> > +{
> > +}
> > +
> > +static struct v4l2_m2m_ops jpu_m2m_ops = {
> > + .device_run = jpu_device_run,
> > + .job_ready = jpu_job_ready,
> > + .job_abort = jpu_job_abort,
> > +};
> > +
> > +/*
> > + *
> > ======================================
> > + * IRQ handler
> > + *
> > ======================================
> > + */
> > +static irqreturn_t jpu_irq_handler(int irq, void *dev_id)
> > +{
> > + struct jpu *jpu = dev_id;
> > + struct jpu_ctx *curr_ctx;
> > + struct vb2_buffer *src_buf, *dst_buf;
> > + unsigned long payload_size = 0;
> > + unsigned int int_status;
> > + unsigned int error;
> > +
> > + spin_lock(&jpu->slock);
> > +
> > + int_status = ioread32(jpu->regs + JINTS);
> > + jpu_int_clear(jpu->regs, int_status);
> > +
> > + /*
> > + * In any mode (decoding/encoding) we can additionaly get
> > + * error status (5th bit)
> > + * jpu operation complete status (6th bit)
> > + */
> > + if (!((ioread32(jpu->regs + JINTE) | INT(5) | INT(6)) &
> > int_status)) {
> > + spin_unlock(&jpu->slock);
> > + return IRQ_NONE;
> > + }
> > +
> > + if (jpu->status = JPU_BUSY) {
> > + if (int_status & INT(3))
> > + jpu->status = JPU_OK;
> > + if (int_status & INT(5))
> > + jpu->status = JPU_ERR;
> > + wake_up_interruptible(&jpu->wq);
> > + goto handled;
> > + }
> > +
> > + if ((int_status & INT(6)) && !(int_status & INT(10)))
> > + goto handled;
> > +
> > + curr_ctx = v4l2_m2m_get_curr_priv(jpu->m2m_dev);
> > +
> > + src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
> > + dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
> > +
> > + if (int_status & INT(10)) {
> > + if (curr_ctx->mode = JPU_ENCODE) {
> > + payload_size = ioread32(jpu->regs +
> > JCDTCU) << 16 |
> > + ioread32(jpu->regs +
> > JCDTCM) << 8 |
> > + ioread32(jpu->regs +
> > JCDTCD);
> > + vb2_set_plane_payload(dst_buf, 0,
> > + payload_size + JPU_JPEG_HDR_SIZE);
> > + }
> > + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
> > + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
> > + } else if (int_status & INT(5)) {
> > + error = ioread32(jpu->regs + JCDERR);
> > + dev_err(jpu->dev, "error 0x%2X\n", error);
> > + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
> > + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
> > + }
> > +
> > + v4l2_m2m_job_finish(jpu->m2m_dev, curr_ctx->fh.m2m_ctx);
> > +
> > +handled:
> > + spin_unlock(&jpu->slock);
> > + return IRQ_HANDLED;
> > +}
> > +
> > +/*
> > + *
> > ======================================
> > + * Driver basic infrastructure
> > + *
> > ======================================
> > + */
> > +static const struct of_device_id jpu_dt_ids[] = {
> > + { .compatible = "renesas,jpu-r8a7790" },
> > + { .compatible = "renesas,jpu-r8a7791" },
> > + { },
> > +};
> > +MODULE_DEVICE_TABLE(of, jpu_dt_ids);
> > +
> > +static int jpu_probe(struct platform_device *pdev)
> > +{
> > + struct jpu *jpu;
> > + struct resource *res;
> > + int ret;
> > +
> > + /* JPEG IP abstraction struct */
> > + jpu = devm_kzalloc(&pdev->dev, sizeof(struct jpu),
> > GFP_KERNEL);
> > + if (!jpu)
> > + return -ENOMEM;
> > +
> > + mutex_init(&jpu->mutex);
> > + spin_lock_init(&jpu->slock);
> > + jpu->dev = &pdev->dev;
> > +
> > + /* memory-mapped registers */
> > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > + jpu->regs = devm_ioremap_resource(&pdev->dev, res);
> > + if (IS_ERR(jpu->regs))
> > + return PTR_ERR(jpu->regs);
> > +
> > + /* interrupt service routine registration */
> > + jpu->irq = ret = platform_get_irq(pdev, 0);
> > + if (ret < 0) {
> > + dev_err(&pdev->dev, "cannot find IRQ\n");
> > + return ret;
> > + }
> > +
> > + ret = devm_request_irq(&pdev->dev, jpu->irq,
> > jpu_irq_handler, 0,
> > + dev_name(&pdev->dev), jpu);
> > + if (ret) {
> > + dev_err(&pdev->dev, "cannot claim IRQ %d\n",
> > jpu->irq);
> > + return ret;
> > + }
> > +
> > + /* clocks */
> > + jpu->clk = devm_clk_get(&pdev->dev, NULL);
> > + if (IS_ERR(jpu->clk)) {
> > + dev_err(&pdev->dev, "cannot get clock\n");
> > + ret = PTR_ERR(jpu->clk);
> > + return ret;
> > + }
> > +
> > + /* v4l2 device */
> > + ret = v4l2_device_register(&pdev->dev, &jpu->v4l2_dev);
> > + if (ret) {
> > + dev_err(&pdev->dev, "Failed to register v4l2
> > device\n");
> > + goto clk_get_rollback;
> > + }
> > +
> > + /* mem2mem device */
> > + jpu->m2m_dev = v4l2_m2m_init(&jpu_m2m_ops);
> > + if (IS_ERR(jpu->m2m_dev)) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to init mem2mem
> > device\n");
> > + ret = PTR_ERR(jpu->m2m_dev);
> > + goto device_register_rollback;
> > + }
> > +
> > + jpu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
> > + if (IS_ERR(jpu->alloc_ctx)) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to init memory
> > allocator\n");
> > + ret = PTR_ERR(jpu->alloc_ctx);
> > + goto m2m_init_rollback;
> > + }
> > +
> > + /* JPEG encoder /dev/videoX node */
> > + jpu->vfd_encoder = video_device_alloc();
> > + if (!jpu->vfd_encoder) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video
> > device\n");
> > + ret = -ENOMEM;
> > + goto vb2_allocator_rollback;
> > + }
> > + strlcpy(jpu->vfd_encoder->name, JPU_M2M_NAME,
> > + sizeof(jpu->vfd_encoder->name));
> > + jpu->vfd_encoder->fops = &jpu_fops;
> > + jpu->vfd_encoder->ioctl_ops = &jpu_ioctl_ops;
> > + jpu->vfd_encoder->minor = -1;
> > + jpu->vfd_encoder->release = video_device_release;
> > + jpu->vfd_encoder->lock = &jpu->mutex;
> > + jpu->vfd_encoder->v4l2_dev = &jpu->v4l2_dev;
> > + jpu->vfd_encoder->vfl_dir = VFL_DIR_M2M;
> > +
> > + ret = video_register_device(jpu->vfd_encoder,
> > VFL_TYPE_GRABBER, -1);
> > + if (ret) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to register video
> > device\n");
> > + goto enc_vdev_alloc_rollback;
> > + }
> > +
> > + video_set_drvdata(jpu->vfd_encoder, jpu);
> > + v4l2_info(&jpu->v4l2_dev, "encoder device registered
> > as /dev/video%d\n",
> > + jpu->vfd_encoder->num);
> > +
> > + /* JPEG decoder /dev/videoX node */
> > + jpu->vfd_decoder = video_device_alloc();
> > + if (!jpu->vfd_decoder) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video
> > device\n");
> > + ret = -ENOMEM;
> > + goto enc_vdev_register_rollback;
> > + }
> > + strlcpy(jpu->vfd_decoder->name, JPU_M2M_NAME,
> > + sizeof(jpu->vfd_decoder->name));
> > + jpu->vfd_decoder->fops = &jpu_fops;
> > + jpu->vfd_decoder->ioctl_ops = &jpu_ioctl_ops;
> > + jpu->vfd_decoder->minor = -1;
> > + jpu->vfd_decoder->release = video_device_release;
> > + jpu->vfd_decoder->lock = &jpu->mutex;
> > + jpu->vfd_decoder->v4l2_dev = &jpu->v4l2_dev;
> > + jpu->vfd_decoder->vfl_dir = VFL_DIR_M2M;
> > +
> > + ret = video_register_device(jpu->vfd_decoder,
> > VFL_TYPE_GRABBER, -1);
> > + if (ret) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to register video
> > device\n");
> > + goto dec_vdev_alloc_rollback;
> > + }
> > +
> > + video_set_drvdata(jpu->vfd_decoder, jpu);
> > + v4l2_info(&jpu->v4l2_dev, "decoder device registered
> > as /dev/video%d\n",
> > + jpu->vfd_decoder->num);
> > +
> > + /* final statements & power management */
> > + platform_set_drvdata(pdev, jpu);
> > +
> > + init_waitqueue_head(&jpu->wq);
> > +
> > + v4l2_info(&jpu->v4l2_dev, "Renesas JPEG codec\n");
> > +
> > + return 0;
> > +
> > +dec_vdev_alloc_rollback:
> > + video_device_release(jpu->vfd_decoder);
> > +
> > +enc_vdev_register_rollback:
> > + video_unregister_device(jpu->vfd_encoder);
> > +
> > +enc_vdev_alloc_rollback:
> > + video_device_release(jpu->vfd_encoder);
> > +
> > +vb2_allocator_rollback:
> > + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> > +
> > +m2m_init_rollback:
> > + v4l2_m2m_release(jpu->m2m_dev);
> > +
> > +device_register_rollback:
> > + v4l2_device_unregister(&jpu->v4l2_dev);
> > +
> > +clk_get_rollback:
> > + clk_disable_unprepare(jpu->clk);
> > +
> > + return ret;
> > +}
> > +
> > +static int jpu_remove(struct platform_device *pdev)
> > +{
> > + struct jpu *jpu = platform_get_drvdata(pdev);
> > +
> > + video_unregister_device(jpu->vfd_decoder);
> > + video_device_release(jpu->vfd_decoder);
> > + video_unregister_device(jpu->vfd_encoder);
> > + video_device_release(jpu->vfd_encoder);
> > + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> > + v4l2_m2m_release(jpu->m2m_dev);
> > + v4l2_device_unregister(&jpu->v4l2_dev);
> > + clk_disable_unprepare(jpu->clk);
> > +
> > + return 0;
> > +}
> > +
> > +#ifdef CONFIG_PM_SLEEP
> > +static int jpu_suspend(struct device *dev)
> > +{
> > + struct jpu *jpu = dev_get_drvdata(dev);
> > +
> > + if (jpu->ref_count = 0)
> > + return 0;
> > +
> > + clk_disable_unprepare(jpu->clk);
> > +
> > + return 0;
> > +}
> > +
> > +static int jpu_resume(struct device *dev)
> > +{
> > + struct jpu *jpu = dev_get_drvdata(dev);
> > +
> > + if (jpu->ref_count)
> > + return 0;
> > +
> > + clk_prepare_enable(jpu->clk);
> > +
> > + return 0;
> > +}
> > +#endif
> > +
> > +static const struct dev_pm_ops jpu_pm_ops = {
> > + SET_SYSTEM_SLEEP_PM_OPS(jpu_suspend, jpu_resume)
> > +};
> > +
> > +static struct platform_driver jpu_driver = {
> > + .probe = jpu_probe,
> > + .remove = jpu_remove,
> > + .driver = {
> > + .of_match_table = jpu_dt_ids,
> > + .owner = THIS_MODULE,
> > + .name = JPU_M2M_NAME,
> > + .pm = &jpu_pm_ops,
> > + },
> > +};
> > +
> > +module_platform_driver(jpu_driver);
> > +
> > +MODULE_ALIAS("jpu");
> > +MODULE_AUTHOR("Mikhail Ulianov
> > <mikhail.ulyanov@cogentembedded.com>");
> > +MODULE_DESCRIPTION("Renesas JPEG codec driver");
> > +MODULE_LICENSE("GPL v2");
> >
>
^ permalink raw reply [flat|nested] 78+ messages in thread* Re: [PATCH 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-08-22 13:39 ` Mikhail Ulianov
0 siblings, 0 replies; 78+ messages in thread
From: Mikhail Ulianov @ 2014-08-22 13:39 UTC (permalink / raw)
To: Hans Verkuil
Cc: m.chehab, horms, magnus.damm, robh+dt, pawel.moll, mark.rutland,
laurent.pinchart, linux-sh, linux-media, devicetree
Hi Hans,
Thanks for your comments.
I have a question on default width, height and sizeimage values
m2m driver should return in case when we try to run G_FMT on just
opened device. Is there any preferable values? v4l2-compliance tool
want it to be non zero, but at that moment we have no information
about output and capture, so i see few options here:
1) ignore v4l-complince error in such case
>> v4l2-test-formats.cpp(417): !pix.width || !pix.height"
2) set some default values e.g. 640x480
Do you have a suggestion?
Thanks, Mikhail.
> Hi Mikhail,
>
> I did a quick scan over the source code and I noticed a few things
> that aren't right. The easiest for you is probably to run the
> v4l2-compliance tool over your driver and it should tell you what
> needs to be fixed. The things I noticed are: querycap doesn't fill in
> bus_info (should be 'platform:<foo>') and device_caps, the vid_cap
> try_fmt fails on a wrong field setting, instead it should just set it.
>
> I also have some doubts about g_selection, but I need to look at that
> again when I have more time next week. It does look like it is not
> properly separating the capture and output streams. I would expect
> g_selection to return different things for capture and output. Note
> that v4l2-compliance doesn't yet check the selection API, so it won't
> help you there.
>
> Regards,
>
> Hans
>
> On 08/19/2014 12:50 PM, Mikhail Ulyanov wrote:
> > Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
> > ---
> > drivers/media/platform/Kconfig | 11 +
> > drivers/media/platform/Makefile | 2 +
> > drivers/media/platform/jpu.c | 1630
> > +++++++++++++++++++++++++++++++++++++++ 3 files changed, 1646
> > insertions(+) create mode 100644 drivers/media/platform/jpu.c
> >
> > diff --git a/drivers/media/platform/Kconfig
> > b/drivers/media/platform/Kconfig index 6d86646..1b8c846 100644
> > --- a/drivers/media/platform/Kconfig
> > +++ b/drivers/media/platform/Kconfig
> > @@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
> > To compile this driver as a module, choose M here: the
> > module will be called vsp1.
> >
> > +config VIDEO_RENESAS_JPU
> > + tristate "Renesas JPEG Processing Unit"
> > + depends on VIDEO_DEV && VIDEO_V4L2
> > + select VIDEOBUF2_DMA_CONTIG
> > + select V4L2_MEM2MEM_DEV
> > + ---help---
> > + This is a V4L2 driver for the Renesas JPEG Processing
> > Unit. +
> > + To compile this driver as a module, choose M here: the
> > module
> > + will be called jpu.
> > +
> > config VIDEO_TI_VPE
> > tristate "TI VPE (Video Processing Engine) driver"
> > depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX
> > diff --git a/drivers/media/platform/Makefile
> > b/drivers/media/platform/Makefile index e5269da..e438534 100644
> > --- a/drivers/media/platform/Makefile
> > +++ b/drivers/media/platform/Makefile
> > @@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) +=
> > soc_camera/
> > obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
> >
> > +obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
> > +
> > obj-y += davinci/
> >
> > obj-$(CONFIG_ARCH_OMAP) += omap/
> > diff --git a/drivers/media/platform/jpu.c
> > b/drivers/media/platform/jpu.c new file mode 100644
> > index 0000000..8630baf
> > --- /dev/null
> > +++ b/drivers/media/platform/jpu.c
> > @@ -0,0 +1,1630 @@
> > +/*
> > + * Author: Mikhail Ulyanov <source@cogentembedded.com>
> > + * Copyright (C) 2014 Cogent Embedded, Inc.
> > + * Copyright (C) 2014 Renesas Electronics Corporation
> > + *
> > + * This is based on the drivers/media/platform/s5p-jpu driver by
> > + * Andrzej Pietrasiewicz and Jacek Anaszewski.
> > + *
> > + * This program is free software; you can redistribute it and/or
> > modify
> > + * it under the terms of the GNU General Public License version 2
> > as
> > + * published by the Free Software Foundation.
> > + */
> > +
> > +#include <linux/clk.h>
> > +#include <linux/err.h>
> > +#include <linux/gfp.h>
> > +#include <linux/interrupt.h>
> > +#include <linux/io.h>
> > +#include <linux/kernel.h>
> > +#include <linux/module.h>
> > +#include <linux/of.h>
> > +#include <linux/of_device.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/slab.h>
> > +#include <linux/spinlock.h>
> > +#include <linux/string.h>
> > +#include <linux/videodev2.h>
> > +#include <media/v4l2-ctrls.h>
> > +#include <media/v4l2-device.h>
> > +#include <media/v4l2-fh.h>
> > +#include <media/v4l2-mem2mem.h>
> > +#include <media/v4l2-ioctl.h>
> > +#include <media/videobuf2-core.h>
> > +#include <media/videobuf2-dma-contig.h>
> > +
> > +
> > +#define JPU_M2M_NAME "jpu"
> > +
> > +#define JPU_WIDTH_MIN 16
> > +#define JPU_HEIGHT_MIN 16
> > +#define JPU_WIDTH_MAX 4096
> > +#define JPU_HEIGHT_MAX 4096
> > +
> > +#define JPU_ENCODE 0
> > +#define JPU_DECODE 1
> > +
> > +/* Flags that indicate a format can be used for capture/output */
> > +#define JPU_FMT_TYPE_OUTPUT 0
> > +#define JPU_FMT_TYPE_CAPTURE 1
> > +#define JPU_ENC_CAPTURE (1 << 0)
> > +#define JPU_ENC_OUTPUT (1 << 1)
> > +#define JPU_DEC_CAPTURE (1 << 2)
> > +#define JPU_DEC_OUTPUT (1 << 3)
> > +
> > +/*
> > + * JPEG registers and bits
> > + */
> > +
> > +/* JPEG code mode register */
> > +#define JCMOD 0x00
> > +#define JCMOD_SOI_DISABLE (1 << 8)
> > +#define JCMOD_SOI_ENABLE (0 << 8)
> > +#define JCMOD_PCTR (1 << 7)
> > +#define JCMOD_MSKIP_DISABLE (0 << 5)
> > +#define JCMOD_MSKIP_ENABLE (1 << 5)
> > +#define JCMOD_DSP_ENC (0 << 3)
> > +#define JCMOD_DSP_DEC (1 << 3)
> > +#define JCMOD_REDU (7 << 0)
> > +#define JCMOD_REDU_422 (1 << 0)
> > +#define JCMOD_REDU_420 (2 << 0)
> > +
> > +/* JPEG code command register */
> > +#define JCCMD 0x04
> > +#define JCCMD_SRST (1 << 12)
> > +#define JCCMD_BRST (1 << 7)
> > +#define JCCMD_JEND (1 << 2)
> > +#define JCCMD_JSRT (1 << 0)
> > +
> > +/* JPEG code quantanization table number register */
> > +#define JCQTN 0x0C
> > +#define JCQTN_SHIFT(t) (((t) - 1) << 1)
> > +
> > +/* JPEG code Huffman table number register */
> > +#define JCHTN 0x10
> > +#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
> > +#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
> > +
> > +#define JCDRIU 0x14 /* JPEG code DRI upper register */
> > +#define JCDRIL 0x18 /* JPEG code DRI lower register */
> > +#define JCVSZU 0x1C /* JPEG code vertical size upper
> > register */ +#define JCVSZD 0x20 /* JPEG code vertical size
> > lower register */ +#define JCHSZU 0x24 /* JPEG code
> > horizontal size upper register */ +#define JCHSZD 0x28 /*
> > JPEG code horizontal size lower register */ +#define JCSZ_MASK
> > 0xff /* JPEG code h/v size register contains only 1 byte*/ +
> > +#define JCDTCU 0x2C /* JPEG code data count upper register
> > */ +#define JCDTCM 0x30 /* JPEG code data count middle
> > register */ +#define JCDTCD 0x34 /* JPEG code data count
> > lower register */ +
> > +/* JPEG interrupt enable register */
> > +#define JINTE 0x38
> > +
> > +/* JPEG interrupt status register */
> > +#define JINTS 0x3C
> > +#define JINTS_MASK 0x7c68
> > +
> > +#define INT(n) (1 << n)
> > +
> > +#define JCDERR 0x40 /* JPEG code decode error register */
> > +
> > +/* JPEG interface encoding */
> > +#define JIFECNT 0x70
> > +#define JIFECNT_INFT_422 0
> > +#define JIFECNT_INFT_420 1
> > +#define JIFECNT_SWAP_WB (0x3 << 4)
> > +
> > +/* JPEG interface encode source Y address register 1 */
> > +#define JIFESYA1 0x74
> > +/* JPEG interface encode source C address register 1 */
> > +#define JIFESCA1 0x78
> > +/* JPEG interface encode source Y address register 2 */
> > +#define JIFESYA2 0x7C
> > +/* JPEG interface encode source C address register 2 */
> > +#define JIFESCA2 0x80
> > +/* JPEG interface encode source memory width register */
> > +#define JIFESMW 0x84
> > +/* JPEG interface encode source vertical size register */
> > +#define JIFESVSZ 0x88
> > +/* JPEG interface encode source horizontal size register */
> > +#define JIFESHSZ 0x8C
> > +/* JPEG interface encode destination address register 1 */
> > +#define JIFEDA1 0x90
> > +/* JPEG interface encode destination address register 2 */
> > +#define JIFEDA2 0x94
> > +
> > +/* JPEG decoding control register */
> > +#define JIFDCNT 0xA0
> > +#define JIFDCNT_SWAP (3 << 1)
> > +#define JIFDCNT_SWAP_NO (0 << 1)
> > +#define JIFDCNT_SWAP_BYTE (1 << 1)
> > +#define JIFDCNT_SWAP_WORD (2 << 1)
> > +#define JIFDCNT_SWAP_WB (3 << 1)
> > +
> > +/* JPEG decode source address register 1 */
> > +#define JIFDSA1 0xA4
> > +/* JPEG decode source address register 2 */
> > +#define JIFDSA2 0xA8
> > +/* JPEG decode data reload size register */
> > +#define JIFDDRSZ 0xAC
> > +/* JPEG decode data destination memory width register */
> > +#define JIFDDMW 0xB0
> > +/* JPEG decode data destination vertical size register */
> > +#define JIFDDVSZ 0xB4
> > +/* JPEG decode data destination horizontal size register */
> > +#define JIFDDHSZ 0xB8
> > +/* JPEG decode data destination Y address register 1 */
> > +#define JIFDDYA1 0xBC
> > +/* JPEG decode data destination C address register 1 */
> > +#define JIFDDCA1 0xC0
> > +/* JPEG decode data destination Y address register 2 */
> > +#define JIFDDYA2 0xC4
> > +/* JPEG decode data destination C address register 2 */
> > +#define JIFDDCA2 0xC8
> > +
> > +/* JPEG code quantization tables registers */
> > +#define JCQTBL(n) (0x10000 + (n) * 0x40)
> > +
> > +/* JPEG code Huffman table DC registers */
> > +#define JCHTBD(n) (0x10100 + (n) * 0x100)
> > +
> > +/* JPEG code Huffman table AC registers */
> > +#define JCHTBA(n) (0x10120 + (n) * 0x100)
> > +
> > +#define JPU_JPEG_HDR_SIZE 0x250
> > +
> > +enum jpu_status {
> > + JPU_OK,
> > + JPU_BUSY,
> > + JPU_ERR
> > +};
> > +
> > +/**
> > + * struct jpu - JPEG IP abstraction
> > + * @mutex: the mutex protecting this structure
> > + * @slock: spinlock protecting the device contexts
> > + * @v4l2_dev: v4l2 device for mem2mem mode
> > + * @vfd_encoder: video device node for encoder mem2mem mode
> > + * @vfd_decoder: video device node for decoder mem2mem mode
> > + * @m2m_dev: v4l2 mem2mem device data
> > + * @regs: JPEG IP registers mapping
> > + * @irq: JPEG IP irq
> > + * @clk: JPEG IP clock
> > + * @dev: JPEG IP struct device
> > + * @alloc_ctx: videobuf2 memory allocator's context
> > + * @bounds: platform specific IP limitations
> > + * @wq: waitqueue for header parsing handling
> > + * @statatus: current driver state variable
> > + * @ref_counter: reference counter
> > + */
> > +struct jpu {
> > + struct mutex mutex;
> > + spinlock_t slock;
> > +
> > + struct v4l2_device v4l2_dev;
> > + struct video_device *vfd_encoder;
> > + struct video_device *vfd_decoder;
> > + struct v4l2_m2m_dev *m2m_dev;
> > +
> > + void __iomem *regs;
> > + unsigned int irq;
> > + struct clk *clk;
> > + struct device *dev;
> > + void *alloc_ctx;
> > + struct jpu_bounds *bounds;
> > + wait_queue_head_t wq;
> > + enum jpu_status status;
> > + int ref_count;
> > +};
> > +
> > +/**
> > + * struct jpu_fmt - driver's internal format data
> > + * @name: format descritpion
> > + * @fourcc: the fourcc code, 0 if not applicable
> > + * @depth: number of bits per pixel
> > + * @h_align: horizontal alignment order (align to 2^h_align)
> > + * @v_align: vertical alignment order (align to 2^v_align)
> > + * @types: types of queue this format is applicable to
> > + */
> > +struct jpu_fmt {
> > + char *name;
> > + u32 fourcc;
> > + int depth;
> > + int h_align;
> > + int v_align;
> > + u32 types;
> > +};
> > +
> > +/**
> > + * jpu_q_data - parameters of one queue
> > + * @fmt: driver-specific format of this queue
> > + * @w: image width
> > + * @h: image height
> > + * @size: image buffer size in bytes
> > + */
> > +struct jpu_q_data {
> > + struct jpu_fmt *fmt;
> > + u32 w;
> > + u32 h;
> > + u32 size;
> > +};
> > +
> > +/**
> > + * jpu_ctx - the device context data
> > + * @jpu: JPEG IP device for this context
> > + * @mode: compression (encode) operation or decompression (decode)
> > + * @compr_quality: destination image quality in compression
> > (encode) mode
> > + * @out_q: source (output) queue information
> > + * @fh: file handler;
> > + * @hdr_parsed: set if header has been parsed during decompression
> > + * @ctrl_handler: controls handler
> > + */
> > +struct jpu_ctx {
> > + struct jpu *jpu;
> > + unsigned int mode;
> > + unsigned short compr_quality;
> > + struct jpu_q_data out_q;
> > + struct jpu_q_data cap_q;
> > + struct v4l2_fh fh;
> > + bool hdr_parsed;
> > + struct v4l2_ctrl_handler ctrl_handler;
> > +};
> > +
> > +static struct jpu_fmt jpu_formats[] = {
> > + {
> > + .name = "JPEG JFIF",
> > + .fourcc = V4L2_PIX_FMT_JPEG,
> > + .types = JPU_ENC_CAPTURE |
> > JPU_DEC_OUTPUT,
> > + },
> > + {
> > + .name = "YUV 4:2:2 semiplanar,
> > YCbCr",
> > + .fourcc = V4L2_PIX_FMT_NV16,
> > + .depth = 16,
> > + .h_align = 3,
> > + .v_align = 3,
> > + .types = JPU_ENC_OUTPUT,
> > + },
> > + {
> > + .name = "YUV 4:2:0 semiplanar,
> > YCbCr",
> > + .fourcc = V4L2_PIX_FMT_NV12,
> > + .depth = 12,
> > + .h_align = 3,
> > + .v_align = 3,
> > + .types = JPU_ENC_OUTPUT,
> > + },
> > + {
> > + .name = "YUV 4:2:2 semiplanar,
> > YCbCr",
> > + .fourcc = V4L2_PIX_FMT_NV16,
> > + .depth = 16,
> > + .h_align = 2,
> > + .v_align = 2,
> > + .types = JPU_DEC_CAPTURE,
> > + },
> > + {
> > + .name = "YUV 4:2:0 semiplanar,
> > YCbCr",
> > + .fourcc = V4L2_PIX_FMT_NV12,
> > + .depth = 12,
> > + .h_align = 2,
> > + .v_align = 2,
> > + .types = JPU_DEC_CAPTURE,
> > + },
> > +};
> > +
> > +static const u8 zigzag[] = {
> > + 0x03, 0x02, 0x0b, 0x13, 0x0a, 0x01, 0x00, 0x09,
> > + 0x12, 0x1b, 0x23, 0x1a, 0x11, 0x08, 0x07, 0x06,
> > + 0x0f, 0x10, 0x19, 0x22, 0x2b, 0x33, 0x2a, 0x21,
> > + 0x18, 0x17, 0x0e, 0x05, 0x04, 0x0d, 0x16, 0x1f,
> > + 0x20, 0x29, 0x32, 0x3b, 0x3a, 0x31, 0x28, 0x27,
> > + 0x1e, 0x15, 0x0e, 0x14, 0x10, 0x26, 0x2f, 0x30,
> > + 0x39, 0x38, 0x37, 0x2e, 0x25, 0x1c, 0x24, 0x2b,
> > + 0x36, 0x3f, 0x3e, 0x35, 0x2c, 0x34, 0x3d, 0x3c
> > +};
> > +
> > +static unsigned char hdr_blob0[] = {
> > + 0xff, 0xd8, 0xff, 0xfe, 0x00, 0x0e, 0x00, 0x00,
> > + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> > + 0x00, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x84
> > +};
> > +
> > +static unsigned char hdr_blob1[] = {
> > + 0xff, 0xc0, 0x00, 0x11, 0x08
> > +};
> > +
> > +static unsigned char hdr_blob2[] = {
> > + 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff,
> > + 0xc4, 0x01, 0xa2
> > +};
> > +
> > +static const unsigned int qtbl_lum[2][16] = {
> > + {
> > + 0x14401927, 0x322e3e44, 0x10121726, 0x26354144,
> > + 0x19171f26, 0x35414444, 0x27262635, 0x41444444,
> > + 0x32263541, 0x44444444, 0x2e354144, 0x44444444,
> > + 0x3e414444, 0x44444444, 0x44444444, 0x44444444
> > + },
> > + {
> > + 0x08060608, 0x0c0e1011, 0x06060608, 0x0a0d0c0f,
> > + 0x06060708, 0x0d0e1218, 0x0808080e, 0x0d131823,
> > + 0x0c0a0d0d, 0x141a2227, 0x0e0d0e13, 0x1a222727,
> > + 0x100c1318, 0x22272727, 0x110f1823, 0x27272727
> > + }
> > +};
> > +
> > +static const unsigned int qtbl_chr[2][16] = {
> > + {
> > + 0x15192026, 0x36444444, 0x191c1826, 0x36444444,
> > + 0x2018202b, 0x42444444, 0x26262b35, 0x44444444,
> > + 0x36424444, 0x44444444, 0x44444444, 0x44444444,
> > + 0x44444444, 0x44444444, 0x44444444, 0x44444444
> > + },
> > + {
> > + 0x0908090b, 0x0e111318, 0x080a090b, 0x0e0d1116,
> > + 0x09090d0e, 0x0d0f171a, 0x0b0b0e0e, 0x0f141a21,
> > + 0x0e0e0d0f, 0x14182127, 0x110d0f14, 0x18202727,
> > + 0x1311171a, 0x21272727, 0x18161a21, 0x27272727
> > + }
> > +};
> > +
> > +static const unsigned int hdctbl_lum[7] = {
> > + 0x00010501, 0x01010101, 0x01000000, 0x00000000,
> > + 0x00010203, 0x04050607, 0x08090a0b
> > +};
> > +
> > +static const unsigned int hdctbl_chr[7] = {
> > + 0x00030101, 0x01010101, 0x01010100, 0x00000000,
> > + 0x00010203, 0x04050607, 0x08090a0b
> > +};
> > +
> > +static const unsigned int hactbl_lum[45] = {
> > + 0x00020103, 0x03020403, 0x05050404, 0x0000017d,
> > + 0x01020300, 0x04110512, 0x21314106, 0x13516107,
> > + 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
> > + 0x24336272, 0x82090a16, 0x1718191a, 0x25262728,
> > + 0x292a3435, 0x36373839, 0x3a434445, 0x46474849,
> > + 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
> > + 0x6a737475, 0x76777879, 0x7a838485, 0x86878889,
> > + 0x8a929394, 0x95969798, 0x999aa2a3, 0xa4a5a6a7,
> > + 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
> > + 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2,
> > + 0xe3e4e5e6, 0xe7e8e9ea, 0xf1f2f3f4, 0xf5f6f7f8,
> > + 0xf9fa0000
> > +};
> > +
> > +static const unsigned int hactbl_chr[45] = {
> > + 0x00020102, 0x04040304, 0x07050404, 0x00010277,
> > + 0x00010203, 0x11040521, 0x31061241, 0x51076171,
> > + 0x13223281, 0x08144291, 0xa1b1c109, 0x233352f0,
> > + 0x156372d1, 0x0a162434, 0xe125f117, 0x18191a26,
> > + 0x2728292a, 0x35363738, 0x393a4344, 0x45464748,
> > + 0x494a5354, 0x55565758, 0x595a6364, 0x65666768,
> > + 0x696a7374, 0x75767778, 0x797a8283, 0x84858687,
> > + 0x88898a92, 0x93949596, 0x9798999a, 0xa2a3a4a5,
> > + 0xa6a7a8a9, 0xaab2b3b4, 0xb5b6b7b8, 0xb9bac2c3,
> > + 0xc4c5c6c7, 0xc8c9cad2, 0xd3d4d5d6, 0xd7d8d9da,
> > + 0xe2e3e4e5, 0xe6e7e8e9, 0xeaf2f3f4, 0xf5f6f7f8,
> > + 0xf9fa0000
> > +};
> > +
> > +static struct jpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
> > +{
> > + return container_of(c->handler, struct jpu_ctx,
> > ctrl_handler); +}
> > +
> > +static struct jpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
> > +{
> > + return container_of(fh, struct jpu_ctx, fh);
> > +}
> > +
> > +static void jpu_set_tbl(void __iomem *regs, const unsigned int
> > *tbl,
> > + int len) {
> > + unsigned int i;
> > +
> > + for (i = 0; i < len; i++)
> > + iowrite32(tbl[i], regs + (i << 2));
> > +}
> > +
> > +static void jpu_set_qtbl(void __iomem *regs, int quality)
> > +{
> > + jpu_set_tbl(regs + JCQTBL(0), qtbl_lum[quality],
> > + ARRAY_SIZE(qtbl_lum[quality]));
> > + jpu_set_tbl(regs + JCQTBL(1), qtbl_chr[quality],
> > + ARRAY_SIZE(qtbl_chr[quality]));
> > +}
> > +
> > +static void jpu_set_htbl(void __iomem *regs)
> > +{
> > + jpu_set_tbl(regs + JCHTBD(0), hdctbl_lum,
> > ARRAY_SIZE(hdctbl_lum));
> > + jpu_set_tbl(regs + JCHTBD(1), hdctbl_chr,
> > ARRAY_SIZE(hdctbl_chr));
> > + jpu_set_tbl(regs + JCHTBA(0), hactbl_lum,
> > ARRAY_SIZE(hactbl_lum));
> > + jpu_set_tbl(regs + JCHTBA(1), hactbl_chr,
> > ARRAY_SIZE(hactbl_chr)); +}
> > +
> > +static void jpu_int_clear(void __iomem *regs, unsigned int
> > int_status) +{
> > + iowrite32(~int_status & JINTS_MASK, regs + JINTS);
> > +
> > + if (int_status & (INT(6) | INT(5) | INT(3)))
> > + iowrite32(JCCMD_JEND, regs + JCCMD);
> > +}
> > +
> > +static void jpu_reset(void __iomem *regs)
> > +{
> > + iowrite32(JCCMD_SRST, regs + JCCMD);
> > + while ((ioread32(regs + JCCMD) & JCCMD_SRST) != 0)
> > + cpu_relax();
> > +}
> > +
> > +/*
> > + *
> > ============================================================================
> > + * video ioctl operations
> > + *
> > ============================================================================
> > + */
> > +static void put_byte(unsigned long *p, u8 v)
> > +{
> > + u8 *addr = (u8 *)*p;
> > +
> > + *addr = v;
> > + (*p)++;
> > +}
> > +
> > +static void put_short_be(unsigned long *p, u16 v)
> > +{
> > + u16 *addr = (u16 *)*p;
> > +
> > + *addr = cpu_to_be16(v);
> > + *p += 2;
> > +}
> > +
> > +static void put_word_be(unsigned long *p, u32 v)
> > +{
> > + u32 *addr = (u32 *)*p;
> > +
> > + *addr = cpu_to_be32(v);
> > + *p += 4;
> > +}
> > +
> > +static void put_blob_byte(unsigned long *p, const unsigned char
> > *blob,
> > + unsigned int len)
> > +{
> > + int i;
> > +
> > + for (i = 0; i < len; i++)
> > + put_byte(p, blob[i]);
> > +}
> > +
> > +static void put_qtbl(unsigned long *p, unsigned char id,
> > + const unsigned int *qtbl)
> > +{
> > + int i;
> > +
> > + put_byte(p, id);
> > + for (i = 0; i < ARRAY_SIZE(zigzag); i++)
> > + put_byte(p, *((u8 *)qtbl + zigzag[i]));
> > +}
> > +
> > +static void put_htbl(unsigned long *p, unsigned char tc,
> > + const unsigned int *htbl, unsigned int len)
> > +{
> > + int i;
> > +
> > + put_byte(p, tc);
> > + for (i = 0; i < len; i++)
> > + put_word_be(p, htbl[i]);
> > +}
> > +
> > +static void jpu_generate_hdr(struct jpu_q_data *q, int quality,
> > void *buffer) +{
> > + /* SOI(2) - DQT(134 / 2 tables) - SOF0(19) - DHT(420 / 2
> > tables) */
> > + unsigned long p = (unsigned long)buffer;
> > +
> > + put_blob_byte(&p, hdr_blob0, ARRAY_SIZE(hdr_blob0));
> > +
> > + put_qtbl(&p, 0x00, qtbl_lum[quality]);
> > + put_qtbl(&p, 0x01, qtbl_chr[quality]);
> > +
> > + put_blob_byte(&p, hdr_blob1, ARRAY_SIZE(hdr_blob1));
> > +
> > + put_short_be(&p, q->h);
> > + put_short_be(&p, q->w);
> > +
> > + put_byte(&p, 0x03);
> > + put_byte(&p, 0x01);
> > +
> > + if (q->fmt->fourcc == V4L2_PIX_FMT_NV16)
> > + put_byte(&p, 0x21);
> > + else
> > + put_byte(&p, 0x22);
> > +
> > + put_blob_byte(&p, hdr_blob2, ARRAY_SIZE(hdr_blob2));
> > +
> > + put_htbl(&p, 0x00, hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
> > + put_htbl(&p, 0x10, hactbl_lum, ARRAY_SIZE(hactbl_lum));
> > + p -= 2;
> > +
> > + put_htbl(&p, 0x01, hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
> > + put_htbl(&p, 0x11, hactbl_chr, ARRAY_SIZE(hactbl_chr));
> > +}
> > +
> > +static int jpu_querycap(struct file *file, void *priv,
> > + struct v4l2_capability *cap)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > +
> > + if (ctx->mode == JPU_ENCODE) {
> > + strlcpy(cap->driver, JPU_M2M_NAME " encoder",
> > + sizeof(cap->driver));
> > + strlcpy(cap->card, JPU_M2M_NAME " encoder",
> > + sizeof(cap->card));
> > + } else {
> > + strlcpy(cap->driver, JPU_M2M_NAME " decoder",
> > + sizeof(cap->driver));
> > + strlcpy(cap->card, JPU_M2M_NAME " decoder",
> > + sizeof(cap->card));
> > + }
> > + cap->bus_info[0] = 0;
> > + cap->capabilities = V4L2_CAP_STREAMING |
> > V4L2_CAP_VIDEO_M2M |
> > + V4L2_CAP_VIDEO_CAPTURE |
> > V4L2_CAP_VIDEO_OUTPUT;
> > + return 0;
> > +}
> > +
> > +static struct jpu_fmt *jpu_find_format(unsigned int mode, u32
> > pixelformat,
> > + unsigned int fmt_type)
> > +{
> > + unsigned int k, fmt_flag;
> > +
> > + if (mode == JPU_ENCODE)
> > + fmt_flag = (fmt_type == JPU_FMT_TYPE_OUTPUT) ?
> > JPU_ENC_OUTPUT :
> > +
> > JPU_ENC_CAPTURE;
> > + else
> > + fmt_flag = (fmt_type == JPU_FMT_TYPE_OUTPUT) ?
> > JPU_DEC_OUTPUT :
> > +
> > JPU_DEC_CAPTURE; +
> > + for (k = 0; k < ARRAY_SIZE(jpu_formats); k++) {
> > + struct jpu_fmt *fmt = &jpu_formats[k];
> > +
> > + if (fmt->fourcc == pixelformat &&
> > + fmt->types & fmt_flag) {
> > + return fmt;
> > + }
> > + }
> > +
> > + return NULL;
> > +}
> > +
> > +static int jpu_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
> > +{
> > + int i, num = 0;
> > +
> > + for (i = 0; i < ARRAY_SIZE(jpu_formats); ++i) {
> > + if (jpu_formats[i].types & type) {
> > + /* index-th format of type type found ? */
> > + if (num == f->index)
> > + break;
> > + /*
> > + * Correct type but haven't reached our
> > index yet,
> > + * just increment per-type index
> > + */
> > + ++num;
> > + }
> > + }
> > +
> > + /* Format not found */
> > + if (i >= ARRAY_SIZE(jpu_formats))
> > + return -EINVAL;
> > +
> > + strlcpy(f->description, jpu_formats[i].name,
> > sizeof(f->description));
> > + f->pixelformat = jpu_formats[i].fourcc;
> > +
> > + return 0;
> > +}
> > +
> > +static int jpu_enum_fmt_vid_cap(struct file *file, void *priv,
> > + struct v4l2_fmtdesc *f)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > +
> > + if (ctx->mode == JPU_ENCODE)
> > + return jpu_enum_fmt(f, JPU_ENC_CAPTURE);
> > +
> > + return jpu_enum_fmt(f, JPU_DEC_CAPTURE);
> > +}
> > +
> > +static int jpu_enum_fmt_vid_out(struct file *file, void *priv,
> > + struct v4l2_fmtdesc *f)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > +
> > + if (ctx->mode == JPU_ENCODE)
> > + return jpu_enum_fmt(f, JPU_ENC_OUTPUT);
> > +
> > + return jpu_enum_fmt(f, JPU_DEC_OUTPUT);
> > +}
> > +
> > +static struct jpu_q_data *jpu_get_q_data(struct jpu_ctx *ctx,
> > + enum v4l2_buf_type type)
> > +{
> > + switch (type) {
> > + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> > + return &ctx->out_q;
> > + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> > + return &ctx->cap_q;
> > + default:
> > + BUG();
> > + }
> > +}
> > +
> > +static int jpu_g_fmt(struct file *file, void *priv, struct
> > v4l2_format *f) +{
> > + struct vb2_queue *vq;
> > + struct jpu_q_data *q_data;
> > + struct v4l2_pix_format *pix = &f->fmt.pix;
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > +
> > + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> > + if (!vq)
> > + return -EINVAL;
> > +
> > + if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
> > + ctx->mode == JPU_DECODE && !ctx->hdr_parsed)
> > + return -EINVAL;
> > +
> > + q_data = jpu_get_q_data(ctx, f->type);
> > +
> > + pix->width = q_data->w;
> > + pix->height = q_data->h;
> > + pix->field = V4L2_FIELD_NONE;
> > + pix->pixelformat = q_data->fmt->fourcc;
> > + pix->bytesperline = 0;
> > + if (pix->pixelformat != V4L2_PIX_FMT_JPEG)
> > + pix->bytesperline = q_data->w;
> > + pix->sizeimage = q_data->size;
> > +
> > + return 0;
> > +}
> > +
> > +
> > +static void jpu_bound_align_image(u32 *w, unsigned int wmin,
> > unsigned int wmax,
> > + unsigned int walign, u32 *h,
> > + unsigned int hmin, unsigned int
> > hmax,
> > + unsigned int halign)
> > +{
> > + int width, height, w_step, h_step;
> > +
> > + width = *w;
> > + height = *h;
> > +
> > + w_step = 1 << walign;
> > + h_step = 1 << halign;
> > + v4l_bound_align_image(w, wmin, wmax, walign, h, hmin,
> > hmax, halign, 3); +
> > + if (*w < width && *w + w_step < wmax)
> > + *w += w_step;
> > + if (*h < height && *h + h_step < hmax)
> > + *h += h_step;
> > +}
> > +
> > +static int jpu_vidioc_try_fmt(struct v4l2_format *f, struct
> > jpu_fmt *fmt,
> > + struct jpu_ctx *ctx)
> > +{
> > + struct v4l2_pix_format *pix = &f->fmt.pix;
> > +
> > + if (pix->field == V4L2_FIELD_ANY)
> > + pix->field = V4L2_FIELD_NONE;
> > + else if (pix->field != V4L2_FIELD_NONE)
> > + return -EINVAL;
> > +
> > + /*
> > + * V4L2 specification suggests the driver corrects the
> > format struct
> > + * if any of the dimensions is unsupported
> > + */
> > + jpu_bound_align_image(&pix->width, JPU_WIDTH_MIN,
> > JPU_WIDTH_MAX,
> > + fmt->h_align, &pix->height,
> > JPU_HEIGHT_MIN,
> > + JPU_HEIGHT_MAX, fmt->v_align);
> > +
> > + if (fmt->fourcc == V4L2_PIX_FMT_JPEG) {
> > + if (pix->sizeimage <= 0)
> > + pix->sizeimage = PAGE_SIZE;
> > + pix->bytesperline = 0;
> > + } else {
> > + u32 bpl = pix->bytesperline;
> > +
> > + if (bpl < pix->width)
> > + bpl = pix->width;
> > +
> > + pix->bytesperline = bpl;
> > + pix->sizeimage = (pix->width * pix->height *
> > fmt->depth) >> 3;
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static int jpu_try_fmt_vid_cap(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > + struct jpu_fmt *fmt;
> > +
> > + fmt = jpu_find_format(ctx->mode, f->fmt.pix.pixelformat,
> > + JPU_FMT_TYPE_CAPTURE);
> > + if (!fmt) {
> > + v4l2_err(&ctx->jpu->v4l2_dev,
> > + "Fourcc format (0x%08x) invalid.\n",
> > + f->fmt.pix.pixelformat);
> > + return -EINVAL;
> > + }
> > +
> > + return jpu_vidioc_try_fmt(f, fmt, ctx);
> > +}
> > +
> > +static int jpu_try_fmt_vid_out(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > + struct jpu_fmt *fmt;
> > +
> > + fmt = jpu_find_format(ctx->mode, f->fmt.pix.pixelformat,
> > + JPU_FMT_TYPE_OUTPUT);
> > + if (!fmt) {
> > + v4l2_err(&ctx->jpu->v4l2_dev,
> > + "Fourcc format (0x%08x) invalid.\n",
> > + f->fmt.pix.pixelformat);
> > + return -EINVAL;
> > + }
> > +
> > + return jpu_vidioc_try_fmt(f, fmt, ctx);
> > +}
> > +
> > +static int jpu_s_fmt(struct jpu_ctx *ctx, struct v4l2_format *f)
> > +{
> > + struct vb2_queue *vq;
> > + struct jpu_q_data *q_data;
> > + struct v4l2_pix_format *pix = &f->fmt.pix;
> > + unsigned int f_type;
> > +
> > + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> > + if (!vq)
> > + return -EINVAL;
> > +
> > + q_data = jpu_get_q_data(ctx, f->type);
> > +
> > + if (vb2_is_busy(vq)) {
> > + v4l2_err(&ctx->jpu->v4l2_dev, "%s queue busy\n",
> > __func__);
> > + return -EBUSY;
> > + }
> > +
> > + f_type = V4L2_TYPE_IS_OUTPUT(f->type) ?
> > JPU_FMT_TYPE_OUTPUT :
> > +
> > JPU_FMT_TYPE_CAPTURE; +
> > + q_data->fmt = jpu_find_format(ctx->mode, pix->pixelformat,
> > f_type);
> > + q_data->w = pix->width;
> > + q_data->h = pix->height;
> > + if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
> > + q_data->size = q_data->w * q_data->h *
> > q_data->fmt->depth >> 3;
> > + else
> > + q_data->size = pix->sizeimage;
> > +
> > + return 0;
> > +}
> > +
> > +static int jpu_s_fmt_vid_cap(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + int ret;
> > +
> > + ret = jpu_try_fmt_vid_cap(file, priv, f);
> > + if (ret)
> > + return ret;
> > +
> > + return jpu_s_fmt(fh_to_ctx(priv), f);
> > +}
> > +
> > +static int jpu_s_fmt_vid_out(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + int ret;
> > +
> > + ret = jpu_try_fmt_vid_out(file, priv, f);
> > + if (ret)
> > + return ret;
> > +
> > + return jpu_s_fmt(fh_to_ctx(priv), f);
> > +}
> > +
> > +
> > +static int jpu_g_selection(struct file *file, void *priv,
> > + struct v4l2_selection *s)
> > +{
> > + struct jpu_ctx *ctx = fh_to_ctx(priv);
> > +
> > + if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
> > + s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> > + return -EINVAL;
> > +
> > + /* For JPEG blob active == default == bounds */
> > + switch (s->target) {
> > + case V4L2_SEL_TGT_CROP:
> > + case V4L2_SEL_TGT_CROP_BOUNDS:
> > + case V4L2_SEL_TGT_CROP_DEFAULT:
> > + case V4L2_SEL_TGT_COMPOSE:
> > + case V4L2_SEL_TGT_COMPOSE_DEFAULT:
> > + s->r.width = ctx->out_q.w;
> > + s->r.height = ctx->out_q.h;
> > + break;
> > + case V4L2_SEL_TGT_COMPOSE_BOUNDS:
> > + case V4L2_SEL_TGT_COMPOSE_PADDED:
> > + s->r.width = ctx->cap_q.w;
> > + s->r.height = ctx->cap_q.h;
> > + break;
> > + default:
> > + return -EINVAL;
> > + }
> > + s->r.left = 0;
> > + s->r.top = 0;
> > + return 0;
> > +}
> > +
> > +/*
> > + * V4L2 controls
> > + */
> > +static int jpu_s_ctrl(struct v4l2_ctrl *ctrl)
> > +{
> > + struct jpu_ctx *ctx = ctrl_to_ctx(ctrl);
> > + unsigned long flags;
> > +
> > + spin_lock_irqsave(&ctx->jpu->slock, flags);
> > +
> > + if (ctrl->id == V4L2_CID_JPEG_COMPRESSION_QUALITY)
> > + ctx->compr_quality = ctrl->val;
> > +
> > + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> > + return 0;
> > +}
> > +
> > +static const struct v4l2_ctrl_ops jpu_ctrl_ops = {
> > + .s_ctrl = jpu_s_ctrl,
> > +};
> > +
> > +
> > +static const struct v4l2_ioctl_ops jpu_ioctl_ops = {
> > + .vidioc_querycap = jpu_querycap,
> > +
> > + .vidioc_enum_fmt_vid_cap = jpu_enum_fmt_vid_cap,
> > + .vidioc_enum_fmt_vid_out = jpu_enum_fmt_vid_out,
> > +
> > + .vidioc_g_fmt_vid_cap = jpu_g_fmt,
> > + .vidioc_g_fmt_vid_out = jpu_g_fmt,
> > +
> > + .vidioc_try_fmt_vid_cap =
> > jpu_try_fmt_vid_cap,
> > + .vidioc_try_fmt_vid_out =
> > jpu_try_fmt_vid_out, +
> > + .vidioc_s_fmt_vid_cap = jpu_s_fmt_vid_cap,
> > + .vidioc_s_fmt_vid_out = jpu_s_fmt_vid_out,
> > +
> > + .vidioc_reqbufs =
> > v4l2_m2m_ioctl_reqbufs,
> > + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
> > + .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
> > + .vidioc_dqbuf =
> > v4l2_m2m_ioctl_dqbuf,
> > + .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> > + .vidioc_streamoff =
> > v4l2_m2m_ioctl_streamoff, +
> > + .vidioc_g_selection = jpu_g_selection,
> > +};
> > +
> > +static int jpu_controls_create(struct jpu_ctx *ctx)
> > +{
> > + struct v4l2_ctrl *ctrl;
> > +
> > + v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
> > +
> > + if (ctx->mode == JPU_ENCODE) {
> > + v4l2_ctrl_new_std(&ctx->ctrl_handler,
> > &jpu_ctrl_ops,
> > +
> > V4L2_CID_JPEG_COMPRESSION_QUALITY,
> > + 0, 1, 1, 1);
> > + }
> > +
> > + if (ctx->ctrl_handler.error)
> > + return ctx->ctrl_handler.error;
> > +
> > + if (ctx->mode == JPU_DECODE)
> > + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
> > + V4L2_CTRL_FLAG_READ_ONLY;
> > +
> > + return 0;
> > +}
> > +
> > +/*
> > + *
> > ============================================================================
> > + * Queue operations
> > + *
> > ============================================================================
> > + */
> > +static int jpu_queue_setup(struct vb2_queue *vq,
> > + const struct v4l2_format *fmt,
> > + unsigned int *nbuffers, unsigned int
> > *nplanes,
> > + unsigned int sizes[], void
> > *alloc_ctxs[]) +{
> > + struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
> > + struct jpu_q_data *q_data;
> > + unsigned int size, count = *nbuffers;
> > +
> > + q_data = jpu_get_q_data(ctx, vq->type);
> > +
> > + size = q_data->size;
> > +
> > + /*
> > + * Header is parsed during decoding and parsed information
> > stored
> > + * in the context so we do not allow another buffer to
> > overwrite it
> > + */
> > + if (ctx->mode == JPU_DECODE)
> > + count = 1;
> > +
> > + *nbuffers = count;
> > + *nplanes = 1;
> > + sizes[0] = size;
> > + alloc_ctxs[0] = ctx->jpu->alloc_ctx;
> > +
> > + return 0;
> > +}
> > +
> > +static int jpu_buf_prepare(struct vb2_buffer *vb)
> > +{
> > + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> > + struct jpu_q_data *q_data;
> > +
> > + q_data = jpu_get_q_data(ctx, vb->vb2_queue->type);
> > +
> > + if (vb2_plane_size(vb, 0) < q_data->size) {
> > + pr_err("%s: data will not fit into plane (%lu <
> > %lu)\n",
> > + __func__, vb2_plane_size(vb, 0),
> > (long)q_data->size);
> > + return -EINVAL;
> > + }
> > +
> > + vb2_set_plane_payload(vb, 0, q_data->size);
> > +
> > + return 0;
> > +}
> > +
> > +static void jpu_buf_queue(struct vb2_buffer *vb)
> > +{
> > + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> > +
> > + if (ctx->mode == JPU_DECODE &&
> > + vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
> > {
> > + struct jpu_q_data *q_data;
> > + struct jpu *jpu = ctx->jpu;
> > + unsigned int subsampling, w_out, h_out, w_cap,
> > h_cap;
> > + unsigned long src_addr, flags;
> > +
> > + src_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
> > +
> > + jpu_reset(jpu->regs);
> > +
> > + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs +
> > JCMOD);
> > + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> > + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> > +
> > + spin_lock_irqsave(&jpu->slock, flags);
> > + jpu->status = JPU_BUSY;
> > + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> > +
> > + iowrite32(INT(3), jpu->regs + JINTE);
> > + iowrite32(src_addr, jpu->regs + JIFDSA1);
> > + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> > +
> > + if (wait_event_interruptible_timeout(jpu->wq,
> > +
> > jpu->status != JPU_BUSY,
> > +
> > msecs_to_jiffies(100)) > 0
> > + &&
> > jpu->status == JPU_OK)
> > + ctx->hdr_parsed = true;
> > +
> > + w_out = ioread32(jpu->regs + JCHSZU) << 8 |
> > + ioread32(jpu->regs + JCHSZD);
> > +
> > + h_out = ioread32(jpu->regs + JCVSZU) << 8 |
> > + ioread32(jpu->regs + JCVSZD);
> > +
> > + w_cap = ioread32(jpu->regs + JIFDDHSZ);
> > + h_cap = ioread32(jpu->regs + JIFDDVSZ);
> > +
> > + switch (ioread32(jpu->regs + JCMOD) & JCMOD_REDU) {
> > + case JCMOD_REDU_422:
> > + subsampling = V4L2_PIX_FMT_NV16;
> > + break;
> > + case JCMOD_REDU_420:
> > + subsampling = V4L2_PIX_FMT_NV12;
> > + break;
> > + default:
> > + subsampling = 0;
> > + }
> > +
> > + if (!ctx->hdr_parsed || !subsampling || w_out >
> > JPU_WIDTH_MAX ||
> > + w_out < JPU_WIDTH_MIN || h_out >
> > JPU_HEIGHT_MAX ||
> > + h_out < JPU_HEIGHT_MIN) {
> > + pr_err("incompatible or corrupted JPEG
> > data\n");
> > + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
> > + return;
> > + }
> > +
> > + q_data = &ctx->out_q;
> > + q_data->w = w_out;
> > + q_data->h = h_out;
> > +
> > + q_data = &ctx->cap_q;
> > + q_data->w = w_cap;
> > + q_data->h = h_cap;
> > +
> > + q_data->fmt = jpu_find_format(JPU_DECODE,
> > subsampling,
> > +
> > JPU_FMT_TYPE_CAPTURE); +
> > + q_data->size =
> > + (q_data->w * q_data->h *
> > q_data->fmt->depth) >> 3;
> > + }
> > +
> > + if (ctx->fh.m2m_ctx)
> > + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
> > +}
> > +
> > +static int jpu_start_streaming(struct vb2_queue *q, unsigned int
> > count) +{
> > + return 0;
> > +}
> > +
> > +static void jpu_stop_streaming(struct vb2_queue *q)
> > +{
> > +}
> > +
> > +static struct vb2_ops jpu_qops = {
> > + .queue_setup = jpu_queue_setup,
> > + .buf_prepare = jpu_buf_prepare,
> > + .buf_queue = jpu_buf_queue,
> > + .wait_prepare = vb2_ops_wait_prepare,
> > + .wait_finish = vb2_ops_wait_finish,
> > + .start_streaming = jpu_start_streaming,
> > + .stop_streaming = jpu_stop_streaming,
> > +};
> > +
> > +static int jpu_queue_init(void *priv, struct vb2_queue *src_vq,
> > + struct vb2_queue *dst_vq)
> > +{
> > + struct jpu_ctx *ctx = priv;
> > + int ret;
> > +
> > + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
> > + src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
> > + src_vq->drv_priv = ctx;
> > + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> > + src_vq->ops = &jpu_qops;
> > + src_vq->mem_ops = &vb2_dma_contig_memops;
> > + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> > + src_vq->lock = &ctx->jpu->mutex;
> > +
> > + ret = vb2_queue_init(src_vq);
> > + if (ret)
> > + return ret;
> > +
> > + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> > + dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
> > + dst_vq->drv_priv = ctx;
> > + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> > + dst_vq->ops = &jpu_qops;
> > + dst_vq->mem_ops = &vb2_dma_contig_memops;
> > + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> > + dst_vq->lock = &ctx->jpu->mutex;
> > +
> > + return vb2_queue_init(dst_vq);
> > +}
> > +
> > +/*
> > + *
> > ============================================================================
> > + * Device file operations
> > + *
> > ============================================================================
> > + */
> > +static int jpu_open(struct file *file)
> > +{
> > + struct jpu *jpu = video_drvdata(file);
> > + struct video_device *vfd = video_devdata(file);
> > + struct jpu_ctx *ctx;
> > + struct jpu_fmt *out_fmt, *cap_fmt;
> > + int ret = 0;
> > +
> > + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> > + if (!ctx)
> > + return -ENOMEM;
> > +
> > + if (mutex_lock_interruptible(&jpu->mutex)) {
> > + ret = -ERESTARTSYS;
> > + goto free;
> > + }
> > +
> > + v4l2_fh_init(&ctx->fh, vfd);
> > + ctx->fh.ctrl_handler = &ctx->ctrl_handler;
> > + file->private_data = &ctx->fh;
> > + v4l2_fh_add(&ctx->fh);
> > +
> > + ctx->jpu = jpu;
> > + if (vfd == jpu->vfd_encoder) {
> > + ctx->mode = JPU_ENCODE;
> > + out_fmt = jpu_find_format(ctx->mode,
> > V4L2_PIX_FMT_NV16,
> > + JPU_FMT_TYPE_OUTPUT);
> > + cap_fmt = jpu_find_format(ctx->mode,
> > V4L2_PIX_FMT_JPEG,
> > + JPU_FMT_TYPE_CAPTURE);
> > +
> > + } else {
> > + ctx->mode = JPU_DECODE;
> > + out_fmt = jpu_find_format(ctx->mode,
> > V4L2_PIX_FMT_JPEG,
> > + JPU_FMT_TYPE_OUTPUT);
> > + cap_fmt = jpu_find_format(ctx->mode,
> > V4L2_PIX_FMT_NV16,
> > + JPU_FMT_TYPE_CAPTURE);
> > + }
> > +
> > + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpu->m2m_dev, ctx,
> > jpu_queue_init);
> > + if (IS_ERR(ctx->fh.m2m_ctx)) {
> > + ret = PTR_ERR(ctx->fh.m2m_ctx);
> > + goto error;
> > + }
> > +
> > + ctx->out_q.fmt = out_fmt;
> > + ctx->cap_q.fmt = cap_fmt;
> > +
> > + ret = jpu_controls_create(ctx);
> > + if (ret < 0)
> > + goto error;
> > +
> > + if (jpu->ref_count == 0) {
> > + ret = clk_prepare_enable(jpu->clk);
> > + if (ret < 0)
> > + goto error;
> > + }
> > +
> > + jpu->ref_count++;
> > +
> > + mutex_unlock(&jpu->mutex);
> > + return 0;
> > +
> > +error:
> > + v4l2_fh_del(&ctx->fh);
> > + v4l2_fh_exit(&ctx->fh);
> > + mutex_unlock(&jpu->mutex);
> > +free:
> > + kfree(ctx);
> > + return ret;
> > +}
> > +
> > +static int jpu_release(struct file *file)
> > +{
> > + struct jpu *jpu = video_drvdata(file);
> > + struct jpu_ctx *ctx = fh_to_ctx(file->private_data);
> > +
> > + mutex_lock(&jpu->mutex);
> > + if (--jpu->ref_count == 0)
> > + clk_disable_unprepare(jpu->clk);
> > + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> > + v4l2_ctrl_handler_free(&ctx->ctrl_handler);
> > + v4l2_fh_del(&ctx->fh);
> > + v4l2_fh_exit(&ctx->fh);
> > + kfree(ctx);
> > + mutex_unlock(&jpu->mutex);
> > +
> > + return 0;
> > +}
> > +
> > +static const struct v4l2_file_operations jpu_fops = {
> > + .owner = THIS_MODULE,
> > + .open = jpu_open,
> > + .release = jpu_release,
> > + .unlocked_ioctl = video_ioctl2,
> > + .poll = v4l2_m2m_fop_poll,
> > + .mmap = v4l2_m2m_fop_mmap,
> > +};
> > +
> > +/*
> > + *
> > ============================================================================
> > + * mem2mem callbacks
> > + *
> > ============================================================================
> > + */
> > +static void jpu_device_run(void *priv)
> > +{
> > + struct jpu_ctx *ctx = priv;
> > + struct jpu *jpu = ctx->jpu;
> > + struct vb2_buffer *src_buf, *dst_buf;
> > + unsigned long src_addr, dst_addr, flags;
> > + void *dst_vaddr;
> > + unsigned int w, h;
> > +
> > + spin_lock_irqsave(&ctx->jpu->slock, flags);
> > +
> > + src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> > + dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> > + src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
> > + dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
> > + dst_vaddr = vb2_plane_vaddr(dst_buf, 0);
> > +
> > + jpu_reset(jpu->regs);
> > +
> > + if (ctx->mode == JPU_ENCODE) {
> > + unsigned int redu, inft;
> > +
> > + w = ctx->out_q.w;
> > + h = ctx->out_q.h;
> > +
> > + jpu_generate_hdr(&ctx->out_q, ctx->compr_quality,
> > dst_vaddr); +
> > + if (ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_NV12) {
> > + redu = JCMOD_REDU_420;
> > + inft = JIFECNT_INFT_420;
> > + } else {
> > + redu = JCMOD_REDU_422;
> > + inft = JIFECNT_INFT_422;
> > + }
> > +
> > + /* the only no marker mode works for encoding */
> > + iowrite32(JCMOD_DSP_ENC | JCMOD_PCTR | redu |
> > JCMOD_SOI_ENABLE |
> > + JCMOD_MSKIP_ENABLE, jpu->regs + JCMOD);
> > +
> > + iowrite32(JIFECNT_SWAP_WB | inft, jpu->regs +
> > JIFECNT);
> > + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> > + iowrite32(INT(10), jpu->regs + JINTE);
> > +
> > + /* Y and C components source addresses */
> > + iowrite32(src_addr, jpu->regs + JIFESYA1);
> > + iowrite32(src_addr + w * h, jpu->regs + JIFESCA1);
> > +
> > + /* memory width */
> > + iowrite32(w, jpu->regs + JIFESMW);
> > +
> > + iowrite32((w >> 8) & JCSZ_MASK, jpu->regs +
> > JCHSZU);
> > + iowrite32(w & JCSZ_MASK, jpu->regs + JCHSZD);
> > +
> > + iowrite32((h >> 8) & JCSZ_MASK, jpu->regs +
> > JCVSZU);
> > + iowrite32(h & JCSZ_MASK, jpu->regs + JCVSZD);
> > +
> > + iowrite32(w, jpu->regs + JIFESHSZ);
> > + iowrite32(h, jpu->regs + JIFESVSZ);
> > +
> > + iowrite32(dst_addr + JPU_JPEG_HDR_SIZE, jpu->regs
> > + JIFEDA1); +
> > + iowrite32(0 << JCQTN_SHIFT(1) | 1 <<
> > JCQTN_SHIFT(2) |
> > + 1 << JCQTN_SHIFT(3), jpu->regs + JCQTN);
> > +
> > + iowrite32(0 << JCHTN_AC_SHIFT(1) | 0 <<
> > JCHTN_DC_SHIFT(1) |
> > + 1 << JCHTN_AC_SHIFT(2) | 1 <<
> > JCHTN_DC_SHIFT(2) |
> > + 1 << JCHTN_AC_SHIFT(3) | 1 <<
> > JCHTN_DC_SHIFT(3),
> > + jpu->regs + JCHTN);
> > +
> > + jpu_set_qtbl(jpu->regs, ctx->compr_quality);
> > + jpu_set_htbl(jpu->regs);
> > + } else {
> > + w = ctx->cap_q.w;
> > + h = ctx->cap_q.h;
> > +
> > + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs +
> > JCMOD);
> > + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> > + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> > + iowrite32(INT(10) | INT(7) | INT(6) | INT(5),
> > + jpu->regs + JINTE);
> > + iowrite32(src_addr, jpu->regs + JIFDSA1);
> > + iowrite32(w, jpu->regs + JIFDDMW);
> > + iowrite32(dst_addr, jpu->regs + JIFDDYA1);
> > + iowrite32(dst_addr + w * h, jpu->regs + JIFDDCA1);
> > + }
> > +
> > + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> > + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> > +}
> > +
> > +static int jpu_job_ready(void *priv)
> > +{
> > + struct jpu_ctx *ctx = priv;
> > +
> > + if (ctx->mode == JPU_DECODE)
> > + return ctx->hdr_parsed;
> > + return 1;
> > +}
> > +
> > +static void jpu_job_abort(void *priv)
> > +{
> > +}
> > +
> > +static struct v4l2_m2m_ops jpu_m2m_ops = {
> > + .device_run = jpu_device_run,
> > + .job_ready = jpu_job_ready,
> > + .job_abort = jpu_job_abort,
> > +};
> > +
> > +/*
> > + *
> > ============================================================================
> > + * IRQ handler
> > + *
> > ============================================================================
> > + */
> > +static irqreturn_t jpu_irq_handler(int irq, void *dev_id)
> > +{
> > + struct jpu *jpu = dev_id;
> > + struct jpu_ctx *curr_ctx;
> > + struct vb2_buffer *src_buf, *dst_buf;
> > + unsigned long payload_size = 0;
> > + unsigned int int_status;
> > + unsigned int error;
> > +
> > + spin_lock(&jpu->slock);
> > +
> > + int_status = ioread32(jpu->regs + JINTS);
> > + jpu_int_clear(jpu->regs, int_status);
> > +
> > + /*
> > + * In any mode (decoding/encoding) we can additionaly get
> > + * error status (5th bit)
> > + * jpu operation complete status (6th bit)
> > + */
> > + if (!((ioread32(jpu->regs + JINTE) | INT(5) | INT(6)) &
> > int_status)) {
> > + spin_unlock(&jpu->slock);
> > + return IRQ_NONE;
> > + }
> > +
> > + if (jpu->status == JPU_BUSY) {
> > + if (int_status & INT(3))
> > + jpu->status = JPU_OK;
> > + if (int_status & INT(5))
> > + jpu->status = JPU_ERR;
> > + wake_up_interruptible(&jpu->wq);
> > + goto handled;
> > + }
> > +
> > + if ((int_status & INT(6)) && !(int_status & INT(10)))
> > + goto handled;
> > +
> > + curr_ctx = v4l2_m2m_get_curr_priv(jpu->m2m_dev);
> > +
> > + src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
> > + dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
> > +
> > + if (int_status & INT(10)) {
> > + if (curr_ctx->mode == JPU_ENCODE) {
> > + payload_size = ioread32(jpu->regs +
> > JCDTCU) << 16 |
> > + ioread32(jpu->regs +
> > JCDTCM) << 8 |
> > + ioread32(jpu->regs +
> > JCDTCD);
> > + vb2_set_plane_payload(dst_buf, 0,
> > + payload_size + JPU_JPEG_HDR_SIZE);
> > + }
> > + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
> > + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
> > + } else if (int_status & INT(5)) {
> > + error = ioread32(jpu->regs + JCDERR);
> > + dev_err(jpu->dev, "error 0x%2X\n", error);
> > + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
> > + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
> > + }
> > +
> > + v4l2_m2m_job_finish(jpu->m2m_dev, curr_ctx->fh.m2m_ctx);
> > +
> > +handled:
> > + spin_unlock(&jpu->slock);
> > + return IRQ_HANDLED;
> > +}
> > +
> > +/*
> > + *
> > ============================================================================
> > + * Driver basic infrastructure
> > + *
> > ============================================================================
> > + */
> > +static const struct of_device_id jpu_dt_ids[] = {
> > + { .compatible = "renesas,jpu-r8a7790" },
> > + { .compatible = "renesas,jpu-r8a7791" },
> > + { },
> > +};
> > +MODULE_DEVICE_TABLE(of, jpu_dt_ids);
> > +
> > +static int jpu_probe(struct platform_device *pdev)
> > +{
> > + struct jpu *jpu;
> > + struct resource *res;
> > + int ret;
> > +
> > + /* JPEG IP abstraction struct */
> > + jpu = devm_kzalloc(&pdev->dev, sizeof(struct jpu),
> > GFP_KERNEL);
> > + if (!jpu)
> > + return -ENOMEM;
> > +
> > + mutex_init(&jpu->mutex);
> > + spin_lock_init(&jpu->slock);
> > + jpu->dev = &pdev->dev;
> > +
> > + /* memory-mapped registers */
> > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > + jpu->regs = devm_ioremap_resource(&pdev->dev, res);
> > + if (IS_ERR(jpu->regs))
> > + return PTR_ERR(jpu->regs);
> > +
> > + /* interrupt service routine registration */
> > + jpu->irq = ret = platform_get_irq(pdev, 0);
> > + if (ret < 0) {
> > + dev_err(&pdev->dev, "cannot find IRQ\n");
> > + return ret;
> > + }
> > +
> > + ret = devm_request_irq(&pdev->dev, jpu->irq,
> > jpu_irq_handler, 0,
> > + dev_name(&pdev->dev), jpu);
> > + if (ret) {
> > + dev_err(&pdev->dev, "cannot claim IRQ %d\n",
> > jpu->irq);
> > + return ret;
> > + }
> > +
> > + /* clocks */
> > + jpu->clk = devm_clk_get(&pdev->dev, NULL);
> > + if (IS_ERR(jpu->clk)) {
> > + dev_err(&pdev->dev, "cannot get clock\n");
> > + ret = PTR_ERR(jpu->clk);
> > + return ret;
> > + }
> > +
> > + /* v4l2 device */
> > + ret = v4l2_device_register(&pdev->dev, &jpu->v4l2_dev);
> > + if (ret) {
> > + dev_err(&pdev->dev, "Failed to register v4l2
> > device\n");
> > + goto clk_get_rollback;
> > + }
> > +
> > + /* mem2mem device */
> > + jpu->m2m_dev = v4l2_m2m_init(&jpu_m2m_ops);
> > + if (IS_ERR(jpu->m2m_dev)) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to init mem2mem
> > device\n");
> > + ret = PTR_ERR(jpu->m2m_dev);
> > + goto device_register_rollback;
> > + }
> > +
> > + jpu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
> > + if (IS_ERR(jpu->alloc_ctx)) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to init memory
> > allocator\n");
> > + ret = PTR_ERR(jpu->alloc_ctx);
> > + goto m2m_init_rollback;
> > + }
> > +
> > + /* JPEG encoder /dev/videoX node */
> > + jpu->vfd_encoder = video_device_alloc();
> > + if (!jpu->vfd_encoder) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video
> > device\n");
> > + ret = -ENOMEM;
> > + goto vb2_allocator_rollback;
> > + }
> > + strlcpy(jpu->vfd_encoder->name, JPU_M2M_NAME,
> > + sizeof(jpu->vfd_encoder->name));
> > + jpu->vfd_encoder->fops = &jpu_fops;
> > + jpu->vfd_encoder->ioctl_ops = &jpu_ioctl_ops;
> > + jpu->vfd_encoder->minor = -1;
> > + jpu->vfd_encoder->release = video_device_release;
> > + jpu->vfd_encoder->lock = &jpu->mutex;
> > + jpu->vfd_encoder->v4l2_dev = &jpu->v4l2_dev;
> > + jpu->vfd_encoder->vfl_dir = VFL_DIR_M2M;
> > +
> > + ret = video_register_device(jpu->vfd_encoder,
> > VFL_TYPE_GRABBER, -1);
> > + if (ret) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to register video
> > device\n");
> > + goto enc_vdev_alloc_rollback;
> > + }
> > +
> > + video_set_drvdata(jpu->vfd_encoder, jpu);
> > + v4l2_info(&jpu->v4l2_dev, "encoder device registered
> > as /dev/video%d\n",
> > + jpu->vfd_encoder->num);
> > +
> > + /* JPEG decoder /dev/videoX node */
> > + jpu->vfd_decoder = video_device_alloc();
> > + if (!jpu->vfd_decoder) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video
> > device\n");
> > + ret = -ENOMEM;
> > + goto enc_vdev_register_rollback;
> > + }
> > + strlcpy(jpu->vfd_decoder->name, JPU_M2M_NAME,
> > + sizeof(jpu->vfd_decoder->name));
> > + jpu->vfd_decoder->fops = &jpu_fops;
> > + jpu->vfd_decoder->ioctl_ops = &jpu_ioctl_ops;
> > + jpu->vfd_decoder->minor = -1;
> > + jpu->vfd_decoder->release = video_device_release;
> > + jpu->vfd_decoder->lock = &jpu->mutex;
> > + jpu->vfd_decoder->v4l2_dev = &jpu->v4l2_dev;
> > + jpu->vfd_decoder->vfl_dir = VFL_DIR_M2M;
> > +
> > + ret = video_register_device(jpu->vfd_decoder,
> > VFL_TYPE_GRABBER, -1);
> > + if (ret) {
> > + v4l2_err(&jpu->v4l2_dev, "Failed to register video
> > device\n");
> > + goto dec_vdev_alloc_rollback;
> > + }
> > +
> > + video_set_drvdata(jpu->vfd_decoder, jpu);
> > + v4l2_info(&jpu->v4l2_dev, "decoder device registered
> > as /dev/video%d\n",
> > + jpu->vfd_decoder->num);
> > +
> > + /* final statements & power management */
> > + platform_set_drvdata(pdev, jpu);
> > +
> > + init_waitqueue_head(&jpu->wq);
> > +
> > + v4l2_info(&jpu->v4l2_dev, "Renesas JPEG codec\n");
> > +
> > + return 0;
> > +
> > +dec_vdev_alloc_rollback:
> > + video_device_release(jpu->vfd_decoder);
> > +
> > +enc_vdev_register_rollback:
> > + video_unregister_device(jpu->vfd_encoder);
> > +
> > +enc_vdev_alloc_rollback:
> > + video_device_release(jpu->vfd_encoder);
> > +
> > +vb2_allocator_rollback:
> > + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> > +
> > +m2m_init_rollback:
> > + v4l2_m2m_release(jpu->m2m_dev);
> > +
> > +device_register_rollback:
> > + v4l2_device_unregister(&jpu->v4l2_dev);
> > +
> > +clk_get_rollback:
> > + clk_disable_unprepare(jpu->clk);
> > +
> > + return ret;
> > +}
> > +
> > +static int jpu_remove(struct platform_device *pdev)
> > +{
> > + struct jpu *jpu = platform_get_drvdata(pdev);
> > +
> > + video_unregister_device(jpu->vfd_decoder);
> > + video_device_release(jpu->vfd_decoder);
> > + video_unregister_device(jpu->vfd_encoder);
> > + video_device_release(jpu->vfd_encoder);
> > + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> > + v4l2_m2m_release(jpu->m2m_dev);
> > + v4l2_device_unregister(&jpu->v4l2_dev);
> > + clk_disable_unprepare(jpu->clk);
> > +
> > + return 0;
> > +}
> > +
> > +#ifdef CONFIG_PM_SLEEP
> > +static int jpu_suspend(struct device *dev)
> > +{
> > + struct jpu *jpu = dev_get_drvdata(dev);
> > +
> > + if (jpu->ref_count == 0)
> > + return 0;
> > +
> > + clk_disable_unprepare(jpu->clk);
> > +
> > + return 0;
> > +}
> > +
> > +static int jpu_resume(struct device *dev)
> > +{
> > + struct jpu *jpu = dev_get_drvdata(dev);
> > +
> > + if (jpu->ref_count)
> > + return 0;
> > +
> > + clk_prepare_enable(jpu->clk);
> > +
> > + return 0;
> > +}
> > +#endif
> > +
> > +static const struct dev_pm_ops jpu_pm_ops = {
> > + SET_SYSTEM_SLEEP_PM_OPS(jpu_suspend, jpu_resume)
> > +};
> > +
> > +static struct platform_driver jpu_driver = {
> > + .probe = jpu_probe,
> > + .remove = jpu_remove,
> > + .driver = {
> > + .of_match_table = jpu_dt_ids,
> > + .owner = THIS_MODULE,
> > + .name = JPU_M2M_NAME,
> > + .pm = &jpu_pm_ops,
> > + },
> > +};
> > +
> > +module_platform_driver(jpu_driver);
> > +
> > +MODULE_ALIAS("jpu");
> > +MODULE_AUTHOR("Mikhail Ulianov
> > <mikhail.ulyanov@cogentembedded.com>");
> > +MODULE_DESCRIPTION("Renesas JPEG codec driver");
> > +MODULE_LICENSE("GPL v2");
> >
>
^ permalink raw reply [flat|nested] 78+ messages in thread* Re: [PATCH 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-22 13:39 ` Mikhail Ulianov
(?)
@ 2014-08-22 17:03 ` Hans Verkuil
-1 siblings, 0 replies; 78+ messages in thread
From: Hans Verkuil @ 2014-08-22 17:03 UTC (permalink / raw)
To: Mikhail Ulianov
Cc: m.chehab, horms, magnus.damm, robh+dt, pawel.moll, mark.rutland,
laurent.pinchart, linux-sh, linux-media, devicetree
On 08/22/2014 01:39 PM, Mikhail Ulianov wrote:
> Hi Hans,
>
> Thanks for your comments.
>
> I have a question on default width, height and sizeimage values
> m2m driver should return in case when we try to run G_FMT on just
> opened device. Is there any preferable values? v4l2-compliance tool
> want it to be non zero, but at that moment we have no information
> about output and capture, so i see few options here:
> 1) ignore v4l-complince error in such case
>>> v4l2-test-formats.cpp(417): !pix.width || !pix.height"
> 2) set some default values e.g. 640x480
> Do you have a suggestion? \
Use 2: just set a default value. V4L2 should always be in a sane state,
which in this case means that the driver should just pick some default
initial format.
Regards,
Hans
>
> Thanks, Mikhail.
>
>> Hi Mikhail,
>>
>> I did a quick scan over the source code and I noticed a few things
>> that aren't right. The easiest for you is probably to run the
>> v4l2-compliance tool over your driver and it should tell you what
>> needs to be fixed. The things I noticed are: querycap doesn't fill in
>> bus_info (should be 'platform:<foo>') and device_caps, the vid_cap
>> try_fmt fails on a wrong field setting, instead it should just set it.
>>
>> I also have some doubts about g_selection, but I need to look at that
>> again when I have more time next week. It does look like it is not
>> properly separating the capture and output streams. I would expect
>> g_selection to return different things for capture and output. Note
>> that v4l2-compliance doesn't yet check the selection API, so it won't
>> help you there.
>>
>> Regards,
>>
>> Hans
^ permalink raw reply [flat|nested] 78+ messages in thread
* [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-19 12:50 ` Mikhail Ulyanov
@ 2014-08-25 12:29 ` Mikhail Ulyanov
-1 siblings, 0 replies; 78+ messages in thread
From: Mikhail Ulyanov @ 2014-08-25 12:29 UTC (permalink / raw)
To: horms, magnus.damm, m.chehab, robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media,
devicetree, Mikhail Ulyanov
This patch contains driver for Renesas R-Car JPEG codec.
Cnanges since v1:
- s/g_fmt function simplified
- default format for queues added
- dumb vidioc functions added to be in compliance with standard api:
jpu_s_priority, jpu_g_priority
- standard v4l2_ctrl_subscribe_event and v4l2_event_unsubscribe
now in use by the same reason
Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
---
drivers/media/platform/Kconfig | 11 +
drivers/media/platform/Makefile | 2 +
drivers/media/platform/jpu.c | 1628 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 1641 insertions(+)
create mode 100644 drivers/media/platform/jpu.c
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 6d86646..1b8c846 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
To compile this driver as a module, choose M here: the module
will be called vsp1.
+config VIDEO_RENESAS_JPU
+ tristate "Renesas JPEG Processing Unit"
+ depends on VIDEO_DEV && VIDEO_V4L2
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_MEM2MEM_DEV
+ ---help---
+ This is a V4L2 driver for the Renesas JPEG Processing Unit.
+
+ To compile this driver as a module, choose M here: the module
+ will be called jpu.
+
config VIDEO_TI_VPE
tristate "TI VPE (Video Processing Engine) driver"
depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX
diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index e5269da..e438534 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) += soc_camera/
obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
+obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
+
obj-y += davinci/
obj-$(CONFIG_ARCH_OMAP) += omap/
diff --git a/drivers/media/platform/jpu.c b/drivers/media/platform/jpu.c
new file mode 100644
index 0000000..da70491
--- /dev/null
+++ b/drivers/media/platform/jpu.c
@@ -0,0 +1,1628 @@
+/*
+ * Author: Mikhail Ulyanov <source@cogentembedded.com>
+ * Copyright (C) 2014 Cogent Embedded, Inc.
+ * Copyright (C) 2014 Renesas Electronics Corporation
+ *
+ * This is based on the drivers/media/platform/s5p-jpu driver by
+ * Andrzej Pietrasiewicz and Jacek Anaszewski.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+
+
+#define JPU_M2M_NAME "jpu"
+
+#define JPU_WIDTH_MIN 16
+#define JPU_HEIGHT_MIN 16
+#define JPU_WIDTH_MAX 4096
+#define JPU_HEIGHT_MAX 4096
+#define JPU_DEFAULT_WIDTH 640
+#define JPU_DEFAULT_HEIGHT 480
+
+#define JPU_ENCODE 0
+#define JPU_DECODE 1
+
+/* Flags that indicate a format can be used for capture/output */
+#define JPU_FMT_TYPE_OUTPUT 0
+#define JPU_FMT_TYPE_CAPTURE 1
+#define JPU_ENC_CAPTURE (1 << 0)
+#define JPU_ENC_OUTPUT (1 << 1)
+#define JPU_DEC_CAPTURE (1 << 2)
+#define JPU_DEC_OUTPUT (1 << 3)
+
+/*
+ * JPEG registers and bits
+ */
+
+/* JPEG code mode register */
+#define JCMOD 0x00
+#define JCMOD_SOI_DISABLE (1 << 8)
+#define JCMOD_SOI_ENABLE (0 << 8)
+#define JCMOD_PCTR (1 << 7)
+#define JCMOD_MSKIP_DISABLE (0 << 5)
+#define JCMOD_MSKIP_ENABLE (1 << 5)
+#define JCMOD_DSP_ENC (0 << 3)
+#define JCMOD_DSP_DEC (1 << 3)
+#define JCMOD_REDU (7 << 0)
+#define JCMOD_REDU_422 (1 << 0)
+#define JCMOD_REDU_420 (2 << 0)
+
+/* JPEG code command register */
+#define JCCMD 0x04
+#define JCCMD_SRST (1 << 12)
+#define JCCMD_BRST (1 << 7)
+#define JCCMD_JEND (1 << 2)
+#define JCCMD_JSRT (1 << 0)
+
+/* JPEG code quantanization table number register */
+#define JCQTN 0x0C
+#define JCQTN_SHIFT(t) (((t) - 1) << 1)
+
+/* JPEG code Huffman table number register */
+#define JCHTN 0x10
+#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
+#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
+
+#define JCDRIU 0x14 /* JPEG code DRI upper register */
+#define JCDRIL 0x18 /* JPEG code DRI lower register */
+#define JCVSZU 0x1C /* JPEG code vertical size upper register */
+#define JCVSZD 0x20 /* JPEG code vertical size lower register */
+#define JCHSZU 0x24 /* JPEG code horizontal size upper register */
+#define JCHSZD 0x28 /* JPEG code horizontal size lower register */
+#define JCSZ_MASK 0xff /* JPEG code h/v size register contains only 1 byte*/
+
+#define JCDTCU 0x2C /* JPEG code data count upper register */
+#define JCDTCM 0x30 /* JPEG code data count middle register */
+#define JCDTCD 0x34 /* JPEG code data count lower register */
+
+/* JPEG interrupt enable register */
+#define JINTE 0x38
+
+/* JPEG interrupt status register */
+#define JINTS 0x3C
+#define JINTS_MASK 0x7c68
+
+#define INT(n) (1 << n)
+
+#define JCDERR 0x40 /* JPEG code decode error register */
+
+/* JPEG interface encoding */
+#define JIFECNT 0x70
+#define JIFECNT_INFT_422 0
+#define JIFECNT_INFT_420 1
+#define JIFECNT_SWAP_WB (0x3 << 4)
+
+/* JPEG interface encode source Y address register 1 */
+#define JIFESYA1 0x74
+/* JPEG interface encode source C address register 1 */
+#define JIFESCA1 0x78
+/* JPEG interface encode source Y address register 2 */
+#define JIFESYA2 0x7C
+/* JPEG interface encode source C address register 2 */
+#define JIFESCA2 0x80
+/* JPEG interface encode source memory width register */
+#define JIFESMW 0x84
+/* JPEG interface encode source vertical size register */
+#define JIFESVSZ 0x88
+/* JPEG interface encode source horizontal size register */
+#define JIFESHSZ 0x8C
+/* JPEG interface encode destination address register 1 */
+#define JIFEDA1 0x90
+/* JPEG interface encode destination address register 2 */
+#define JIFEDA2 0x94
+
+/* JPEG decoding control register */
+#define JIFDCNT 0xA0
+#define JIFDCNT_SWAP (3 << 1)
+#define JIFDCNT_SWAP_NO (0 << 1)
+#define JIFDCNT_SWAP_BYTE (1 << 1)
+#define JIFDCNT_SWAP_WORD (2 << 1)
+#define JIFDCNT_SWAP_WB (3 << 1)
+
+/* JPEG decode source address register 1 */
+#define JIFDSA1 0xA4
+/* JPEG decode source address register 2 */
+#define JIFDSA2 0xA8
+/* JPEG decode data reload size register */
+#define JIFDDRSZ 0xAC
+/* JPEG decode data destination memory width register */
+#define JIFDDMW 0xB0
+/* JPEG decode data destination vertical size register */
+#define JIFDDVSZ 0xB4
+/* JPEG decode data destination horizontal size register */
+#define JIFDDHSZ 0xB8
+/* JPEG decode data destination Y address register 1 */
+#define JIFDDYA1 0xBC
+/* JPEG decode data destination C address register 1 */
+#define JIFDDCA1 0xC0
+/* JPEG decode data destination Y address register 2 */
+#define JIFDDYA2 0xC4
+/* JPEG decode data destination C address register 2 */
+#define JIFDDCA2 0xC8
+
+/* JPEG code quantization tables registers */
+#define JCQTBL(n) (0x10000 + (n) * 0x40)
+
+/* JPEG code Huffman table DC registers */
+#define JCHTBD(n) (0x10100 + (n) * 0x100)
+
+/* JPEG code Huffman table AC registers */
+#define JCHTBA(n) (0x10120 + (n) * 0x100)
+
+#define JPU_JPEG_HDR_SIZE 0x250
+
+enum jpu_status {
+ JPU_OK,
+ JPU_BUSY,
+ JPU_ERR
+};
+
+/**
+ * struct jpu - JPEG IP abstraction
+ * @mutex: the mutex protecting this structure
+ * @slock: spinlock protecting the device contexts
+ * @v4l2_dev: v4l2 device for mem2mem mode
+ * @vfd_encoder: video device node for encoder mem2mem mode
+ * @vfd_decoder: video device node for decoder mem2mem mode
+ * @m2m_dev: v4l2 mem2mem device data
+ * @regs: JPEG IP registers mapping
+ * @irq: JPEG IP irq
+ * @clk: JPEG IP clock
+ * @dev: JPEG IP struct device
+ * @alloc_ctx: videobuf2 memory allocator's context
+ * @bounds: platform specific IP limitations
+ * @wq: waitqueue for header parsing handling
+ * @statatus: current driver state variable
+ * @ref_counter: reference counter
+ */
+struct jpu {
+ struct mutex mutex;
+ spinlock_t slock;
+
+ struct v4l2_device v4l2_dev;
+ struct video_device *vfd_encoder;
+ struct video_device *vfd_decoder;
+ struct v4l2_m2m_dev *m2m_dev;
+
+ void __iomem *regs;
+ unsigned int irq;
+ struct clk *clk;
+ struct device *dev;
+ void *alloc_ctx;
+ struct jpu_bounds *bounds;
+ wait_queue_head_t wq;
+ enum jpu_status status;
+ int ref_count;
+};
+
+/**
+ * struct jpu_fmt - driver's internal format data
+ * @name: format descritpion
+ * @fourcc: the fourcc code, 0 if not applicable
+ * @colorspace: the colorspace specificator
+ * @depth: number of bits per pixel
+ * @h_align: horizontal alignment order (align to 2^h_align)
+ * @v_align: vertical alignment order (align to 2^v_align)
+ * @types: types of queue this format is applicable to
+ */
+struct jpu_fmt {
+ char *name;
+ u32 fourcc;
+ u32 colorspace;
+ int depth;
+ int h_align;
+ int v_align;
+ u32 types;
+};
+
+/**
+ * jpu_q_data - parameters of one queue
+ * @fmt: driver-specific format of this queue
+ * @default_fmt: default format of this queue
+ * @w: image width
+ * @h: image height
+ * @size: image buffer size in bytes
+ */
+struct jpu_q_data {
+ struct jpu_fmt *fmt;
+ struct jpu_fmt *default_fmt;
+ u32 w;
+ u32 h;
+ u32 size;
+};
+
+/**
+ * jpu_ctx - the device context data
+ * @jpu: JPEG IP device for this context
+ * @mode: compression (encode) operation or decompression (decode)
+ * @compr_quality: destination image quality in compression (encode) mode
+ * @out_q: source (output) queue information
+ * @fh: file handler;
+ * @hdr_parsed: set if header has been parsed during decompression
+ * @ctrl_handler: controls handler
+ */
+struct jpu_ctx {
+ struct jpu *jpu;
+ unsigned int mode;
+ unsigned short compr_quality;
+ struct jpu_q_data out_q;
+ struct jpu_q_data cap_q;
+ struct v4l2_fh fh;
+ bool hdr_parsed;
+ struct v4l2_ctrl_handler ctrl_handler;
+};
+
+static struct jpu_fmt jpu_formats[] = {
+ {
+ .name = "JPEG JFIF",
+ .fourcc = V4L2_PIX_FMT_JPEG,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .types = JPU_ENC_CAPTURE | JPU_DEC_OUTPUT,
+ },
+ {
+ .name = "YUV 4:2:2 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .depth = 16,
+ .h_align = 3,
+ .v_align = 3,
+ .types = JPU_ENC_OUTPUT,
+ },
+ {
+ .name = "YUV 4:2:0 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .depth = 12,
+ .h_align = 3,
+ .v_align = 3,
+ .types = JPU_ENC_OUTPUT,
+ },
+ {
+ .name = "YUV 4:2:2 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .depth = 16,
+ .h_align = 2,
+ .v_align = 2,
+ .types = JPU_DEC_CAPTURE,
+ },
+ {
+ .name = "YUV 4:2:0 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .depth = 12,
+ .h_align = 2,
+ .v_align = 2,
+ .types = JPU_DEC_CAPTURE,
+ },
+};
+
+static const u8 zigzag[] = {
+ 0x03, 0x02, 0x0b, 0x13, 0x0a, 0x01, 0x00, 0x09,
+ 0x12, 0x1b, 0x23, 0x1a, 0x11, 0x08, 0x07, 0x06,
+ 0x0f, 0x10, 0x19, 0x22, 0x2b, 0x33, 0x2a, 0x21,
+ 0x18, 0x17, 0x0e, 0x05, 0x04, 0x0d, 0x16, 0x1f,
+ 0x20, 0x29, 0x32, 0x3b, 0x3a, 0x31, 0x28, 0x27,
+ 0x1e, 0x15, 0x0e, 0x14, 0x10, 0x26, 0x2f, 0x30,
+ 0x39, 0x38, 0x37, 0x2e, 0x25, 0x1c, 0x24, 0x2b,
+ 0x36, 0x3f, 0x3e, 0x35, 0x2c, 0x34, 0x3d, 0x3c
+};
+
+static unsigned char hdr_blob0[] = {
+ 0xff, 0xd8, 0xff, 0xfe, 0x00, 0x0e, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x84
+};
+
+static unsigned char hdr_blob1[] = {
+ 0xff, 0xc0, 0x00, 0x11, 0x08
+};
+
+static unsigned char hdr_blob2[] = {
+ 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff,
+ 0xc4, 0x01, 0xa2
+};
+
+static const unsigned int qtbl_lum[2][16] = {
+ {
+ 0x14401927, 0x322e3e44, 0x10121726, 0x26354144,
+ 0x19171f26, 0x35414444, 0x27262635, 0x41444444,
+ 0x32263541, 0x44444444, 0x2e354144, 0x44444444,
+ 0x3e414444, 0x44444444, 0x44444444, 0x44444444
+ },
+ {
+ 0x08060608, 0x0c0e1011, 0x06060608, 0x0a0d0c0f,
+ 0x06060708, 0x0d0e1218, 0x0808080e, 0x0d131823,
+ 0x0c0a0d0d, 0x141a2227, 0x0e0d0e13, 0x1a222727,
+ 0x100c1318, 0x22272727, 0x110f1823, 0x27272727
+ }
+};
+
+static const unsigned int qtbl_chr[2][16] = {
+ {
+ 0x15192026, 0x36444444, 0x191c1826, 0x36444444,
+ 0x2018202b, 0x42444444, 0x26262b35, 0x44444444,
+ 0x36424444, 0x44444444, 0x44444444, 0x44444444,
+ 0x44444444, 0x44444444, 0x44444444, 0x44444444
+ },
+ {
+ 0x0908090b, 0x0e111318, 0x080a090b, 0x0e0d1116,
+ 0x09090d0e, 0x0d0f171a, 0x0b0b0e0e, 0x0f141a21,
+ 0x0e0e0d0f, 0x14182127, 0x110d0f14, 0x18202727,
+ 0x1311171a, 0x21272727, 0x18161a21, 0x27272727
+ }
+};
+
+static const unsigned int hdctbl_lum[7] = {
+ 0x00010501, 0x01010101, 0x01000000, 0x00000000,
+ 0x00010203, 0x04050607, 0x08090a0b
+};
+
+static const unsigned int hdctbl_chr[7] = {
+ 0x00030101, 0x01010101, 0x01010100, 0x00000000,
+ 0x00010203, 0x04050607, 0x08090a0b
+};
+
+static const unsigned int hactbl_lum[45] = {
+ 0x00020103, 0x03020403, 0x05050404, 0x0000017d,
+ 0x01020300, 0x04110512, 0x21314106, 0x13516107,
+ 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
+ 0x24336272, 0x82090a16, 0x1718191a, 0x25262728,
+ 0x292a3435, 0x36373839, 0x3a434445, 0x46474849,
+ 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
+ 0x6a737475, 0x76777879, 0x7a838485, 0x86878889,
+ 0x8a929394, 0x95969798, 0x999aa2a3, 0xa4a5a6a7,
+ 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
+ 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2,
+ 0xe3e4e5e6, 0xe7e8e9ea, 0xf1f2f3f4, 0xf5f6f7f8,
+ 0xf9fa0000
+};
+
+static const unsigned int hactbl_chr[45] = {
+ 0x00020102, 0x04040304, 0x07050404, 0x00010277,
+ 0x00010203, 0x11040521, 0x31061241, 0x51076171,
+ 0x13223281, 0x08144291, 0xa1b1c109, 0x233352f0,
+ 0x156372d1, 0x0a162434, 0xe125f117, 0x18191a26,
+ 0x2728292a, 0x35363738, 0x393a4344, 0x45464748,
+ 0x494a5354, 0x55565758, 0x595a6364, 0x65666768,
+ 0x696a7374, 0x75767778, 0x797a8283, 0x84858687,
+ 0x88898a92, 0x93949596, 0x9798999a, 0xa2a3a4a5,
+ 0xa6a7a8a9, 0xaab2b3b4, 0xb5b6b7b8, 0xb9bac2c3,
+ 0xc4c5c6c7, 0xc8c9cad2, 0xd3d4d5d6, 0xd7d8d9da,
+ 0xe2e3e4e5, 0xe6e7e8e9, 0xeaf2f3f4, 0xf5f6f7f8,
+ 0xf9fa0000
+};
+
+static struct jpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
+{
+ return container_of(c->handler, struct jpu_ctx, ctrl_handler);
+}
+
+static struct jpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
+{
+ return container_of(fh, struct jpu_ctx, fh);
+}
+
+static void jpu_set_tbl(void __iomem *regs, const unsigned int *tbl,
+ int len) {
+ unsigned int i;
+
+ for (i = 0; i < len; i++)
+ iowrite32(tbl[i], regs + (i << 2));
+}
+
+static void jpu_set_qtbl(void __iomem *regs, int quality)
+{
+ jpu_set_tbl(regs + JCQTBL(0), qtbl_lum[quality],
+ ARRAY_SIZE(qtbl_lum[quality]));
+ jpu_set_tbl(regs + JCQTBL(1), qtbl_chr[quality],
+ ARRAY_SIZE(qtbl_chr[quality]));
+}
+
+static void jpu_set_htbl(void __iomem *regs)
+{
+ jpu_set_tbl(regs + JCHTBD(0), hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
+ jpu_set_tbl(regs + JCHTBD(1), hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
+ jpu_set_tbl(regs + JCHTBA(0), hactbl_lum, ARRAY_SIZE(hactbl_lum));
+ jpu_set_tbl(regs + JCHTBA(1), hactbl_chr, ARRAY_SIZE(hactbl_chr));
+}
+
+static void jpu_int_clear(void __iomem *regs, unsigned int int_status)
+{
+ iowrite32(~int_status & JINTS_MASK, regs + JINTS);
+
+ if (int_status & (INT(6) | INT(5) | INT(3)))
+ iowrite32(JCCMD_JEND, regs + JCCMD);
+}
+
+static void jpu_reset(void __iomem *regs)
+{
+ iowrite32(JCCMD_SRST, regs + JCCMD);
+ while ((ioread32(regs + JCCMD) & JCCMD_SRST) != 0)
+ cpu_relax();
+}
+
+/*
+ * ======================================
+ * video ioctl operations
+ * ======================================
+ */
+static void put_byte(unsigned long *p, u8 v)
+{
+ u8 *addr = (u8 *)*p;
+
+ *addr = v;
+ (*p)++;
+}
+
+static void put_short_be(unsigned long *p, u16 v)
+{
+ u16 *addr = (u16 *)*p;
+
+ *addr = cpu_to_be16(v);
+ *p += 2;
+}
+
+static void put_word_be(unsigned long *p, u32 v)
+{
+ u32 *addr = (u32 *)*p;
+
+ *addr = cpu_to_be32(v);
+ *p += 4;
+}
+
+static void put_blob_byte(unsigned long *p, const unsigned char *blob,
+ unsigned int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ put_byte(p, blob[i]);
+}
+
+static void put_qtbl(unsigned long *p, unsigned char id,
+ const unsigned int *qtbl)
+{
+ int i;
+
+ put_byte(p, id);
+ for (i = 0; i < ARRAY_SIZE(zigzag); i++)
+ put_byte(p, *((u8 *)qtbl + zigzag[i]));
+}
+
+static void put_htbl(unsigned long *p, unsigned char tc,
+ const unsigned int *htbl, unsigned int len)
+{
+ int i;
+
+ put_byte(p, tc);
+ for (i = 0; i < len; i++)
+ put_word_be(p, htbl[i]);
+}
+
+static void jpu_generate_hdr(struct jpu_q_data *q, int quality, void *buffer)
+{
+ /* SOI(2) - DQT(134 / 2 tables) - SOF0(19) - DHT(420 / 2 tables) */
+ unsigned long p = (unsigned long)buffer;
+
+ put_blob_byte(&p, hdr_blob0, ARRAY_SIZE(hdr_blob0));
+
+ put_qtbl(&p, 0x00, qtbl_lum[quality]);
+ put_qtbl(&p, 0x01, qtbl_chr[quality]);
+
+ put_blob_byte(&p, hdr_blob1, ARRAY_SIZE(hdr_blob1));
+
+ put_short_be(&p, q->h);
+ put_short_be(&p, q->w);
+
+ put_byte(&p, 0x03);
+ put_byte(&p, 0x01);
+
+ if (q->fmt->fourcc = V4L2_PIX_FMT_NV16)
+ put_byte(&p, 0x21);
+ else
+ put_byte(&p, 0x22);
+
+ put_blob_byte(&p, hdr_blob2, ARRAY_SIZE(hdr_blob2));
+
+ put_htbl(&p, 0x00, hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
+ put_htbl(&p, 0x10, hactbl_lum, ARRAY_SIZE(hactbl_lum));
+ p -= 2;
+
+ put_htbl(&p, 0x01, hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
+ put_htbl(&p, 0x11, hactbl_chr, ARRAY_SIZE(hactbl_chr));
+}
+
+static int jpu_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode = JPU_ENCODE) {
+ strlcpy(cap->driver, JPU_M2M_NAME " encoder",
+ sizeof(cap->driver));
+ strlcpy(cap->card, JPU_M2M_NAME " encoder",
+ sizeof(cap->card));
+ } else {
+ strlcpy(cap->driver, JPU_M2M_NAME " decoder",
+ sizeof(cap->driver));
+ strlcpy(cap->card, JPU_M2M_NAME " decoder",
+ sizeof(cap->card));
+ }
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ dev_name(ctx->jpu->dev));
+ cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+ return 0;
+}
+
+static struct jpu_fmt *jpu_find_format(unsigned int mode, u32 pixelformat,
+ unsigned int fmt_type)
+{
+ unsigned int k, fmt_flag;
+
+ if (mode = JPU_ENCODE)
+ fmt_flag = (fmt_type = JPU_FMT_TYPE_OUTPUT) ? JPU_ENC_OUTPUT :
+ JPU_ENC_CAPTURE;
+ else
+ fmt_flag = (fmt_type = JPU_FMT_TYPE_OUTPUT) ? JPU_DEC_OUTPUT :
+ JPU_DEC_CAPTURE;
+
+ for (k = 0; k < ARRAY_SIZE(jpu_formats); k++) {
+ struct jpu_fmt *fmt = &jpu_formats[k];
+
+ if (fmt->fourcc = pixelformat && fmt->types & fmt_flag)
+ return fmt;
+ }
+
+ return NULL;
+}
+
+static int jpu_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
+{
+ int i, num = 0;
+
+ for (i = 0; i < ARRAY_SIZE(jpu_formats); ++i) {
+ if (jpu_formats[i].types & type) {
+ /* index-th format of type type found ? */
+ if (num = f->index)
+ break;
+ /*
+ * Correct type but haven't reached our index yet,
+ * just increment per-type index
+ */
+ ++num;
+ }
+ }
+
+ /* Format not found */
+ if (i >= ARRAY_SIZE(jpu_formats))
+ return -EINVAL;
+
+ strlcpy(f->description, jpu_formats[i].name, sizeof(f->description));
+ f->pixelformat = jpu_formats[i].fourcc;
+
+ return 0;
+}
+
+static int jpu_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode = JPU_ENCODE)
+ return jpu_enum_fmt(f, JPU_ENC_CAPTURE);
+
+ return jpu_enum_fmt(f, JPU_DEC_CAPTURE);
+}
+
+static int jpu_enum_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode = JPU_ENCODE)
+ return jpu_enum_fmt(f, JPU_ENC_OUTPUT);
+
+ return jpu_enum_fmt(f, JPU_DEC_OUTPUT);
+}
+
+static struct jpu_q_data *jpu_get_q_data(struct jpu_ctx *ctx,
+ enum v4l2_buf_type type)
+{
+ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ return &ctx->out_q;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ return &ctx->cap_q;
+ default:
+ return NULL;
+ }
+}
+
+static int jpu_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct vb2_queue *vq;
+ struct jpu_q_data *q_data;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ if (f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE &&
+ ctx->mode = JPU_DECODE && !ctx->hdr_parsed)
+ return -EINVAL;
+
+ q_data = jpu_get_q_data(ctx, f->type);
+ if (!q_data)
+ return -EINVAL;
+
+ pix->width = q_data->w;
+ pix->height = q_data->h;
+ pix->field = V4L2_FIELD_NONE;
+ pix->pixelformat = q_data->fmt->fourcc;
+ pix->colorspace = q_data->fmt->colorspace;
+ pix->bytesperline = 0;
+ if (pix->pixelformat != V4L2_PIX_FMT_JPEG)
+ pix->bytesperline = q_data->w;
+ pix->sizeimage = q_data->size;
+
+ return 0;
+}
+
+
+static void jpu_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
+ unsigned int walign, u32 *h,
+ unsigned int hmin, unsigned int hmax,
+ unsigned int halign)
+{
+ int width, height, w_step, h_step;
+
+ width = *w;
+ height = *h;
+
+ w_step = 1 << walign;
+ h_step = 1 << halign;
+ v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 3);
+
+ if (*w < width && *w + w_step < wmax)
+ *w += w_step;
+ if (*h < height && *h + h_step < hmax)
+ *h += h_step;
+}
+
+
+static int jpu_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct jpu_fmt *fmt;
+ struct jpu_q_data *q_data;
+ unsigned int f_type;
+
+ q_data = jpu_get_q_data(ctx, f->type);
+ if (!q_data)
+ return -EINVAL;
+
+ f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
+ JPU_FMT_TYPE_CAPTURE;
+
+ fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
+ if (!fmt)
+ fmt = q_data->default_fmt;
+
+ pix->pixelformat = fmt->fourcc;
+ jpu_bound_align_image(&pix->width, JPU_WIDTH_MIN, JPU_WIDTH_MAX,
+ fmt->h_align, &pix->height, JPU_HEIGHT_MIN,
+ JPU_HEIGHT_MAX, fmt->v_align);
+
+ if (fmt->fourcc = V4L2_PIX_FMT_JPEG) {
+ if (pix->sizeimage <= 0)
+ pix->sizeimage = PAGE_SIZE;
+ pix->bytesperline = 0;
+ } else {
+ if (pix->bytesperline < pix->width)
+ pix->bytesperline = pix->width;
+
+ pix->sizeimage = (pix->width * pix->height * fmt->depth) >> 3;
+ }
+
+ pix->field = V4L2_FIELD_NONE;
+ pix->colorspace = fmt->colorspace;
+
+ return 0;
+}
+
+static int jpu_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct vb2_queue *vq;
+ struct jpu_q_data *q_data;
+ unsigned int f_type;
+ int ret;
+
+ ret = jpu_try_fmt(file, priv, f);
+ if (ret)
+ return ret;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ q_data = jpu_get_q_data(ctx, f->type);
+ if (!q_data)
+ return -EINVAL;
+
+ if (vb2_is_busy(vq)) {
+ v4l2_err(&ctx->jpu->v4l2_dev, "%s queue busy\n", __func__);
+ return -EBUSY;
+ }
+
+ f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
+ JPU_FMT_TYPE_CAPTURE;
+
+ q_data->fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
+ q_data->w = pix->width;
+ q_data->h = pix->height;
+ if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
+ q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3;
+ else
+ q_data->size = pix->sizeimage;
+
+ return 0;
+}
+
+static int jpu_g_selection(struct file *file, void *priv,
+ struct v4l2_selection *s)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ return -ENOTTY;
+
+ if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
+ s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ switch (s->target) {
+ case V4L2_SEL_TGT_CROP:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_COMPOSE:
+ case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+ s->r.width = ctx->out_q.w;
+ s->r.height = ctx->out_q.h;
+ break;
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ case V4L2_SEL_TGT_COMPOSE_PADDED:
+ s->r.width = ctx->cap_q.w;
+ s->r.height = ctx->cap_q.h;
+ break;
+ default:
+ return -EINVAL;
+ }
+ s->r.left = 0;
+ s->r.top = 0;
+ return 0;
+}
+
+/*
+ * V4L2 controls
+ */
+static int jpu_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct jpu_ctx *ctx = ctrl_to_ctx(ctrl);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ctx->jpu->slock, flags);
+
+ if (ctrl->id = V4L2_CID_JPEG_COMPRESSION_QUALITY)
+ ctx->compr_quality = ctrl->val;
+
+ spin_unlock_irqrestore(&ctx->jpu->slock, flags);
+ return 0;
+}
+
+static int jpu_g_priority(struct file *file, void *priv, enum v4l2_priority *p)
+{
+ return -ENOTTY;
+}
+
+static int jpu_s_priority(struct file *file, void *priv, enum v4l2_priority p)
+{
+ return -ENOTTY;
+}
+
+static const struct v4l2_ctrl_ops jpu_ctrl_ops = {
+ .s_ctrl = jpu_s_ctrl,
+};
+
+static const struct v4l2_ioctl_ops jpu_ioctl_ops = {
+ .vidioc_querycap = jpu_querycap,
+
+ .vidioc_enum_fmt_vid_cap = jpu_enum_fmt_vid_cap,
+ .vidioc_enum_fmt_vid_out = jpu_enum_fmt_vid_out,
+
+ .vidioc_g_fmt_vid_cap = jpu_g_fmt,
+ .vidioc_g_fmt_vid_out = jpu_g_fmt,
+
+ .vidioc_try_fmt_vid_cap = jpu_try_fmt,
+ .vidioc_try_fmt_vid_out = jpu_try_fmt,
+
+ .vidioc_s_fmt_vid_cap = jpu_s_fmt,
+ .vidioc_s_fmt_vid_out = jpu_s_fmt,
+
+ .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
+ .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
+ .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
+ .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
+ .vidioc_streamon = v4l2_m2m_ioctl_streamon,
+ .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
+
+ .vidioc_g_selection = jpu_g_selection,
+ .vidioc_s_priority = jpu_s_priority,
+ .vidioc_g_priority = jpu_g_priority,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe
+};
+
+static int jpu_controls_create(struct jpu_ctx *ctx)
+{
+ struct v4l2_ctrl *ctrl;
+
+ v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
+
+ if (ctx->mode = JPU_ENCODE) {
+ v4l2_ctrl_new_std(&ctx->ctrl_handler, &jpu_ctrl_ops,
+ V4L2_CID_JPEG_COMPRESSION_QUALITY,
+ 0, 1, 1, 1);
+ }
+
+ if (ctx->ctrl_handler.error)
+ return ctx->ctrl_handler.error;
+
+ if (ctx->mode = JPU_DECODE)
+ ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
+ V4L2_CTRL_FLAG_READ_ONLY;
+
+ return 0;
+}
+
+/*
+ * ======================================
+ * Queue operations
+ * ======================================
+ */
+static int jpu_queue_setup(struct vb2_queue *vq,
+ const struct v4l2_format *fmt,
+ unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
+ struct jpu_q_data *q_data;
+ unsigned int size, count = *nbuffers;
+
+ q_data = jpu_get_q_data(ctx, vq->type);
+ if (q_data = NULL)
+ return -EINVAL;
+
+ size = q_data->size;
+
+ /*
+ * Header is parsed during decoding and parsed information stored
+ * in the context so we do not allow another buffer to overwrite it
+ */
+ if (ctx->mode = JPU_DECODE)
+ count = 1;
+
+ *nbuffers = count;
+ *nplanes = 1;
+ sizes[0] = size;
+ alloc_ctxs[0] = ctx->jpu->alloc_ctx;
+
+ return 0;
+}
+
+static int jpu_buf_prepare(struct vb2_buffer *vb)
+{
+ struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct jpu_q_data *q_data;
+
+ q_data = jpu_get_q_data(ctx, vb->vb2_queue->type);
+ if (q_data = NULL)
+ return -EINVAL;
+
+ if (vb2_plane_size(vb, 0) < q_data->size) {
+ pr_err("%s: data will not fit into plane (%lu < %lu)\n",
+ __func__, vb2_plane_size(vb, 0), (long)q_data->size);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(vb, 0, q_data->size);
+
+ return 0;
+}
+
+static void jpu_buf_queue(struct vb2_buffer *vb)
+{
+ struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+
+ if (ctx->mode = JPU_DECODE &&
+ vb->vb2_queue->type = V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ struct jpu_q_data *q_data;
+ struct jpu *jpu = ctx->jpu;
+ unsigned int subsampling, w_out, h_out, w_cap, h_cap;
+ unsigned long src_addr, flags;
+
+ src_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
+
+ jpu_reset(jpu->regs);
+
+ iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
+ iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
+ iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
+
+ spin_lock_irqsave(&jpu->slock, flags);
+ jpu->status = JPU_BUSY;
+ spin_unlock_irqrestore(&ctx->jpu->slock, flags);
+
+ iowrite32(INT(3), jpu->regs + JINTE);
+ iowrite32(src_addr, jpu->regs + JIFDSA1);
+ iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
+
+ if (wait_event_interruptible_timeout(jpu->wq,
+ jpu->status != JPU_BUSY,
+ msecs_to_jiffies(100)) > 0
+ && jpu->status = JPU_OK)
+ ctx->hdr_parsed = true;
+
+ w_out = ioread32(jpu->regs + JCHSZU) << 8 |
+ ioread32(jpu->regs + JCHSZD);
+
+ h_out = ioread32(jpu->regs + JCVSZU) << 8 |
+ ioread32(jpu->regs + JCVSZD);
+
+ w_cap = ioread32(jpu->regs + JIFDDHSZ);
+ h_cap = ioread32(jpu->regs + JIFDDVSZ);
+
+ switch (ioread32(jpu->regs + JCMOD) & JCMOD_REDU) {
+ case JCMOD_REDU_422:
+ subsampling = V4L2_PIX_FMT_NV16;
+ break;
+ case JCMOD_REDU_420:
+ subsampling = V4L2_PIX_FMT_NV12;
+ break;
+ default:
+ subsampling = 0;
+ }
+
+ if (!ctx->hdr_parsed || !subsampling || w_out > JPU_WIDTH_MAX ||
+ w_out < JPU_WIDTH_MIN || h_out > JPU_HEIGHT_MAX ||
+ h_out < JPU_HEIGHT_MIN) {
+ pr_err("incompatible or corrupted JPEG data\n");
+ vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
+ return;
+ }
+
+ q_data = &ctx->out_q;
+ q_data->w = w_out;
+ q_data->h = h_out;
+
+ q_data = &ctx->cap_q;
+ q_data->w = w_cap;
+ q_data->h = h_cap;
+
+ q_data->fmt = jpu_find_format(JPU_DECODE, subsampling,
+ JPU_FMT_TYPE_CAPTURE);
+
+ q_data->size + (q_data->w * q_data->h * q_data->fmt->depth) >> 3;
+ }
+
+ if (ctx->fh.m2m_ctx)
+ v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
+}
+
+static int jpu_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ return 0;
+}
+
+static void jpu_stop_streaming(struct vb2_queue *q)
+{
+}
+
+static struct vb2_ops jpu_qops = {
+ .queue_setup = jpu_queue_setup,
+ .buf_prepare = jpu_buf_prepare,
+ .buf_queue = jpu_buf_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .start_streaming = jpu_start_streaming,
+ .stop_streaming = jpu_stop_streaming,
+};
+
+static int jpu_queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct jpu_ctx *ctx = priv;
+ int ret;
+
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ src_vq->drv_priv = ctx;
+ src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ src_vq->ops = &jpu_qops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+ src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ src_vq->lock = &ctx->jpu->mutex;
+
+ ret = vb2_queue_init(src_vq);
+ if (ret)
+ return ret;
+
+ dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ dst_vq->drv_priv = ctx;
+ dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ dst_vq->ops = &jpu_qops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+ dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ dst_vq->lock = &ctx->jpu->mutex;
+
+ return vb2_queue_init(dst_vq);
+}
+
+/*
+ * ======================================
+ * Device file operations
+ * ======================================
+ */
+static int jpu_open(struct file *file)
+{
+ struct jpu *jpu = video_drvdata(file);
+ struct video_device *vfd = video_devdata(file);
+ struct jpu_ctx *ctx;
+ struct jpu_q_data *out_q, *cap_q;
+ int ret = 0;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ if (mutex_lock_interruptible(&jpu->mutex)) {
+ ret = -ERESTARTSYS;
+ goto free;
+ }
+
+ v4l2_fh_init(&ctx->fh, vfd);
+ ctx->fh.ctrl_handler = &ctx->ctrl_handler;
+ file->private_data = &ctx->fh;
+ v4l2_fh_add(&ctx->fh);
+
+ out_q = &ctx->out_q;
+ cap_q = &ctx->cap_q;
+
+ out_q->w = JPU_DEFAULT_WIDTH;
+ out_q->h = JPU_DEFAULT_HEIGHT;
+
+ cap_q->w = JPU_DEFAULT_WIDTH;
+ cap_q->h = JPU_DEFAULT_HEIGHT;
+
+ ctx->jpu = jpu;
+ if (vfd = jpu->vfd_encoder) {
+ ctx->mode = JPU_ENCODE;
+ out_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
+ JPU_FMT_TYPE_OUTPUT);
+ cap_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
+ JPU_FMT_TYPE_CAPTURE);
+ out_q->size = (out_q->w * out_q->h * out_q->fmt->depth) >> 3;
+ cap_q->size = PAGE_SIZE;
+ } else {
+ ctx->mode = JPU_DECODE;
+ out_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
+ JPU_FMT_TYPE_OUTPUT);
+ cap_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
+ JPU_FMT_TYPE_CAPTURE);
+ out_q->size = PAGE_SIZE;
+ cap_q->size = (cap_q->w * cap_q->h * cap_q->fmt->depth) >> 3;
+ }
+
+ out_q->default_fmt = out_q->fmt;
+ cap_q->default_fmt = cap_q->fmt;
+
+ ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpu->m2m_dev, ctx, jpu_queue_init);
+ if (IS_ERR(ctx->fh.m2m_ctx)) {
+ ret = PTR_ERR(ctx->fh.m2m_ctx);
+ goto error;
+ }
+
+ ret = jpu_controls_create(ctx);
+ if (ret < 0)
+ goto error;
+
+ if (jpu->ref_count = 0) {
+ ret = clk_prepare_enable(jpu->clk);
+ if (ret < 0)
+ goto error;
+ }
+
+ jpu->ref_count++;
+
+ mutex_unlock(&jpu->mutex);
+ return 0;
+
+error:
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ mutex_unlock(&jpu->mutex);
+free:
+ kfree(ctx);
+ return ret;
+}
+
+static int jpu_release(struct file *file)
+{
+ struct jpu *jpu = video_drvdata(file);
+ struct jpu_ctx *ctx = fh_to_ctx(file->private_data);
+
+ mutex_lock(&jpu->mutex);
+ if (--jpu->ref_count = 0)
+ clk_disable_unprepare(jpu->clk);
+ v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
+ v4l2_ctrl_handler_free(&ctx->ctrl_handler);
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ kfree(ctx);
+ mutex_unlock(&jpu->mutex);
+
+ return 0;
+}
+
+static const struct v4l2_file_operations jpu_fops = {
+ .owner = THIS_MODULE,
+ .open = jpu_open,
+ .release = jpu_release,
+ .unlocked_ioctl = video_ioctl2,
+ .poll = v4l2_m2m_fop_poll,
+ .mmap = v4l2_m2m_fop_mmap,
+};
+
+/*
+ * ======================================
+ * mem2mem callbacks
+ * ======================================
+ */
+static void jpu_device_run(void *priv)
+{
+ struct jpu_ctx *ctx = priv;
+ struct jpu *jpu = ctx->jpu;
+ struct vb2_buffer *src_buf, *dst_buf;
+ unsigned long src_addr, dst_addr, flags;
+ void *dst_vaddr;
+ unsigned int w, h;
+
+ spin_lock_irqsave(&ctx->jpu->slock, flags);
+
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+ dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+ dst_vaddr = vb2_plane_vaddr(dst_buf, 0);
+
+ jpu_reset(jpu->regs);
+
+ if (ctx->mode = JPU_ENCODE) {
+ unsigned int redu, inft;
+
+ w = ctx->out_q.w;
+ h = ctx->out_q.h;
+
+ jpu_generate_hdr(&ctx->out_q, ctx->compr_quality, dst_vaddr);
+
+ if (ctx->out_q.fmt->fourcc = V4L2_PIX_FMT_NV12) {
+ redu = JCMOD_REDU_420;
+ inft = JIFECNT_INFT_420;
+ } else {
+ redu = JCMOD_REDU_422;
+ inft = JIFECNT_INFT_422;
+ }
+
+ /* the only no marker mode works for encoding */
+ iowrite32(JCMOD_DSP_ENC | JCMOD_PCTR | redu | JCMOD_SOI_ENABLE |
+ JCMOD_MSKIP_ENABLE, jpu->regs + JCMOD);
+
+ iowrite32(JIFECNT_SWAP_WB | inft, jpu->regs + JIFECNT);
+ iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
+ iowrite32(INT(10), jpu->regs + JINTE);
+
+ /* Y and C components source addresses */
+ iowrite32(src_addr, jpu->regs + JIFESYA1);
+ iowrite32(src_addr + w * h, jpu->regs + JIFESCA1);
+
+ /* memory width */
+ iowrite32(w, jpu->regs + JIFESMW);
+
+ iowrite32((w >> 8) & JCSZ_MASK, jpu->regs + JCHSZU);
+ iowrite32(w & JCSZ_MASK, jpu->regs + JCHSZD);
+
+ iowrite32((h >> 8) & JCSZ_MASK, jpu->regs + JCVSZU);
+ iowrite32(h & JCSZ_MASK, jpu->regs + JCVSZD);
+
+ iowrite32(w, jpu->regs + JIFESHSZ);
+ iowrite32(h, jpu->regs + JIFESVSZ);
+
+ iowrite32(dst_addr + JPU_JPEG_HDR_SIZE, jpu->regs + JIFEDA1);
+
+ iowrite32(0 << JCQTN_SHIFT(1) | 1 << JCQTN_SHIFT(2) |
+ 1 << JCQTN_SHIFT(3), jpu->regs + JCQTN);
+
+ iowrite32(0 << JCHTN_AC_SHIFT(1) | 0 << JCHTN_DC_SHIFT(1) |
+ 1 << JCHTN_AC_SHIFT(2) | 1 << JCHTN_DC_SHIFT(2) |
+ 1 << JCHTN_AC_SHIFT(3) | 1 << JCHTN_DC_SHIFT(3),
+ jpu->regs + JCHTN);
+
+ jpu_set_qtbl(jpu->regs, ctx->compr_quality);
+ jpu_set_htbl(jpu->regs);
+ } else {
+ w = ctx->cap_q.w;
+ h = ctx->cap_q.h;
+
+ iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
+ iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
+ iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
+ iowrite32(INT(10) | INT(7) | INT(6) | INT(5),
+ jpu->regs + JINTE);
+ iowrite32(src_addr, jpu->regs + JIFDSA1);
+ iowrite32(w, jpu->regs + JIFDDMW);
+ iowrite32(dst_addr, jpu->regs + JIFDDYA1);
+ iowrite32(dst_addr + w * h, jpu->regs + JIFDDCA1);
+ }
+
+ iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
+ spin_unlock_irqrestore(&ctx->jpu->slock, flags);
+}
+
+static int jpu_job_ready(void *priv)
+{
+ struct jpu_ctx *ctx = priv;
+
+ if (ctx->mode = JPU_DECODE)
+ return ctx->hdr_parsed;
+ return 1;
+}
+
+static void jpu_job_abort(void *priv)
+{
+}
+
+static struct v4l2_m2m_ops jpu_m2m_ops = {
+ .device_run = jpu_device_run,
+ .job_ready = jpu_job_ready,
+ .job_abort = jpu_job_abort,
+};
+
+/*
+ * ======================================
+ * IRQ handler
+ * ======================================
+ */
+static irqreturn_t jpu_irq_handler(int irq, void *dev_id)
+{
+ struct jpu *jpu = dev_id;
+ struct jpu_ctx *curr_ctx;
+ struct vb2_buffer *src_buf, *dst_buf;
+ unsigned long payload_size = 0;
+ unsigned int int_status;
+ unsigned int error;
+
+ spin_lock(&jpu->slock);
+
+ int_status = ioread32(jpu->regs + JINTS);
+ jpu_int_clear(jpu->regs, int_status);
+
+ /*
+ * In any mode (decoding/encoding) we can additionaly get
+ * error status (5th bit)
+ * jpu operation complete status (6th bit)
+ */
+ if (!((ioread32(jpu->regs + JINTE) | INT(5) | INT(6)) & int_status)) {
+ spin_unlock(&jpu->slock);
+ return IRQ_NONE;
+ }
+
+ if (jpu->status = JPU_BUSY) {
+ if (int_status & INT(3))
+ jpu->status = JPU_OK;
+ if (int_status & INT(5))
+ jpu->status = JPU_ERR;
+ wake_up_interruptible(&jpu->wq);
+ goto handled;
+ }
+
+ if ((int_status & INT(6)) && !(int_status & INT(10)))
+ goto handled;
+
+ curr_ctx = v4l2_m2m_get_curr_priv(jpu->m2m_dev);
+
+ src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
+
+ if (int_status & INT(10)) {
+ if (curr_ctx->mode = JPU_ENCODE) {
+ payload_size = ioread32(jpu->regs + JCDTCU) << 16 |
+ ioread32(jpu->regs + JCDTCM) << 8 |
+ ioread32(jpu->regs + JCDTCD);
+ vb2_set_plane_payload(dst_buf, 0,
+ payload_size + JPU_JPEG_HDR_SIZE);
+ }
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
+ } else if (int_status & INT(5)) {
+ error = ioread32(jpu->regs + JCDERR);
+ dev_err(jpu->dev, "error 0x%X\n", error);
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
+ }
+
+ v4l2_m2m_job_finish(jpu->m2m_dev, curr_ctx->fh.m2m_ctx);
+
+handled:
+ spin_unlock(&jpu->slock);
+ return IRQ_HANDLED;
+}
+
+/*
+ * ======================================
+ * Driver basic infrastructure
+ * ======================================
+ */
+static const struct of_device_id jpu_dt_ids[] = {
+ { .compatible = "renesas,jpu-r8a7790" },
+ { .compatible = "renesas,jpu-r8a7791" },
+ { .compatible = "renesas,jpu-gen2" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, jpu_dt_ids);
+
+static int jpu_probe(struct platform_device *pdev)
+{
+ struct jpu *jpu;
+ struct resource *res;
+ int ret;
+
+ jpu = devm_kzalloc(&pdev->dev, sizeof(struct jpu), GFP_KERNEL);
+ if (!jpu)
+ return -ENOMEM;
+
+ mutex_init(&jpu->mutex);
+ spin_lock_init(&jpu->slock);
+ jpu->dev = &pdev->dev;
+
+ /* memory-mapped registers */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ jpu->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(jpu->regs))
+ return PTR_ERR(jpu->regs);
+
+ /* interrupt service routine registration */
+ jpu->irq = ret = platform_get_irq(pdev, 0);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "cannot find IRQ\n");
+ return ret;
+ }
+
+ ret = devm_request_irq(&pdev->dev, jpu->irq, jpu_irq_handler, 0,
+ dev_name(&pdev->dev), jpu);
+ if (ret) {
+ dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpu->irq);
+ return ret;
+ }
+
+ /* clocks */
+ jpu->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(jpu->clk)) {
+ dev_err(&pdev->dev, "cannot get clock\n");
+ ret = PTR_ERR(jpu->clk);
+ return ret;
+ }
+
+ /* v4l2 device */
+ ret = v4l2_device_register(&pdev->dev, &jpu->v4l2_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register v4l2 device\n");
+ goto clk_get_rollback;
+ }
+
+ /* mem2mem device */
+ jpu->m2m_dev = v4l2_m2m_init(&jpu_m2m_ops);
+ if (IS_ERR(jpu->m2m_dev)) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to init mem2mem device\n");
+ ret = PTR_ERR(jpu->m2m_dev);
+ goto device_register_rollback;
+ }
+
+ jpu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
+ if (IS_ERR(jpu->alloc_ctx)) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to init memory allocator\n");
+ ret = PTR_ERR(jpu->alloc_ctx);
+ goto m2m_init_rollback;
+ }
+
+ /* JPEG encoder /dev/videoX node */
+ jpu->vfd_encoder = video_device_alloc();
+ if (!jpu->vfd_encoder) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
+ ret = -ENOMEM;
+ goto vb2_allocator_rollback;
+ }
+ strlcpy(jpu->vfd_encoder->name, JPU_M2M_NAME,
+ sizeof(jpu->vfd_encoder->name));
+ jpu->vfd_encoder->fops = &jpu_fops;
+ jpu->vfd_encoder->ioctl_ops = &jpu_ioctl_ops;
+ jpu->vfd_encoder->minor = -1;
+ jpu->vfd_encoder->release = video_device_release;
+ jpu->vfd_encoder->lock = &jpu->mutex;
+ jpu->vfd_encoder->v4l2_dev = &jpu->v4l2_dev;
+ jpu->vfd_encoder->vfl_dir = VFL_DIR_M2M;
+
+ ret = video_register_device(jpu->vfd_encoder, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
+ goto enc_vdev_alloc_rollback;
+ }
+
+ video_set_drvdata(jpu->vfd_encoder, jpu);
+ v4l2_info(&jpu->v4l2_dev, "encoder device registered as /dev/video%d\n",
+ jpu->vfd_encoder->num);
+
+ /* JPEG decoder /dev/videoX node */
+ jpu->vfd_decoder = video_device_alloc();
+ if (!jpu->vfd_decoder) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
+ ret = -ENOMEM;
+ goto enc_vdev_register_rollback;
+ }
+ strlcpy(jpu->vfd_decoder->name, JPU_M2M_NAME,
+ sizeof(jpu->vfd_decoder->name));
+ jpu->vfd_decoder->fops = &jpu_fops;
+ jpu->vfd_decoder->ioctl_ops = &jpu_ioctl_ops;
+ jpu->vfd_decoder->minor = -1;
+ jpu->vfd_decoder->release = video_device_release;
+ jpu->vfd_decoder->lock = &jpu->mutex;
+ jpu->vfd_decoder->v4l2_dev = &jpu->v4l2_dev;
+ jpu->vfd_decoder->vfl_dir = VFL_DIR_M2M;
+
+ ret = video_register_device(jpu->vfd_decoder, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
+ goto dec_vdev_alloc_rollback;
+ }
+
+ video_set_drvdata(jpu->vfd_decoder, jpu);
+ v4l2_info(&jpu->v4l2_dev, "decoder device registered as /dev/video%d\n",
+ jpu->vfd_decoder->num);
+
+ /* final statements & power management */
+ platform_set_drvdata(pdev, jpu);
+
+ init_waitqueue_head(&jpu->wq);
+
+ v4l2_info(&jpu->v4l2_dev, "Renesas JPEG codec\n");
+
+ return 0;
+
+dec_vdev_alloc_rollback:
+ video_device_release(jpu->vfd_decoder);
+
+enc_vdev_register_rollback:
+ video_unregister_device(jpu->vfd_encoder);
+
+enc_vdev_alloc_rollback:
+ video_device_release(jpu->vfd_encoder);
+
+vb2_allocator_rollback:
+ vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
+
+m2m_init_rollback:
+ v4l2_m2m_release(jpu->m2m_dev);
+
+device_register_rollback:
+ v4l2_device_unregister(&jpu->v4l2_dev);
+
+clk_get_rollback:
+ clk_disable_unprepare(jpu->clk);
+
+ return ret;
+}
+
+static int jpu_remove(struct platform_device *pdev)
+{
+ struct jpu *jpu = platform_get_drvdata(pdev);
+
+ video_unregister_device(jpu->vfd_decoder);
+ video_device_release(jpu->vfd_decoder);
+ video_unregister_device(jpu->vfd_encoder);
+ video_device_release(jpu->vfd_encoder);
+ vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
+ v4l2_m2m_release(jpu->m2m_dev);
+ v4l2_device_unregister(&jpu->v4l2_dev);
+ clk_disable_unprepare(jpu->clk);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int jpu_suspend(struct device *dev)
+{
+ struct jpu *jpu = dev_get_drvdata(dev);
+
+ if (jpu->ref_count = 0)
+ return 0;
+
+ clk_disable_unprepare(jpu->clk);
+
+ return 0;
+}
+
+static int jpu_resume(struct device *dev)
+{
+ struct jpu *jpu = dev_get_drvdata(dev);
+
+ if (jpu->ref_count)
+ return 0;
+
+ clk_prepare_enable(jpu->clk);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops jpu_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(jpu_suspend, jpu_resume)
+};
+
+static struct platform_driver jpu_driver = {
+ .probe = jpu_probe,
+ .remove = jpu_remove,
+ .driver = {
+ .of_match_table = jpu_dt_ids,
+ .owner = THIS_MODULE,
+ .name = JPU_M2M_NAME,
+ .pm = &jpu_pm_ops,
+ },
+};
+
+module_platform_driver(jpu_driver);
+
+MODULE_ALIAS("jpu");
+MODULE_AUTHOR("Mikhail Ulianov <mikhail.ulyanov@cogentembedded.com>");
+MODULE_DESCRIPTION("Renesas JPEG codec driver");
+MODULE_LICENSE("GPL v2");
--
2.1.0.rc1
^ permalink raw reply related [flat|nested] 78+ messages in thread* [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-08-25 12:29 ` Mikhail Ulyanov
0 siblings, 0 replies; 78+ messages in thread
From: Mikhail Ulyanov @ 2014-08-25 12:29 UTC (permalink / raw)
To: horms, magnus.damm, m.chehab, robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media,
devicetree, Mikhail Ulyanov
This patch contains driver for Renesas R-Car JPEG codec.
Cnanges since v1:
- s/g_fmt function simplified
- default format for queues added
- dumb vidioc functions added to be in compliance with standard api:
jpu_s_priority, jpu_g_priority
- standard v4l2_ctrl_subscribe_event and v4l2_event_unsubscribe
now in use by the same reason
Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
---
drivers/media/platform/Kconfig | 11 +
drivers/media/platform/Makefile | 2 +
drivers/media/platform/jpu.c | 1628 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 1641 insertions(+)
create mode 100644 drivers/media/platform/jpu.c
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 6d86646..1b8c846 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
To compile this driver as a module, choose M here: the module
will be called vsp1.
+config VIDEO_RENESAS_JPU
+ tristate "Renesas JPEG Processing Unit"
+ depends on VIDEO_DEV && VIDEO_V4L2
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_MEM2MEM_DEV
+ ---help---
+ This is a V4L2 driver for the Renesas JPEG Processing Unit.
+
+ To compile this driver as a module, choose M here: the module
+ will be called jpu.
+
config VIDEO_TI_VPE
tristate "TI VPE (Video Processing Engine) driver"
depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX
diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index e5269da..e438534 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) += soc_camera/
obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
+obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
+
obj-y += davinci/
obj-$(CONFIG_ARCH_OMAP) += omap/
diff --git a/drivers/media/platform/jpu.c b/drivers/media/platform/jpu.c
new file mode 100644
index 0000000..da70491
--- /dev/null
+++ b/drivers/media/platform/jpu.c
@@ -0,0 +1,1628 @@
+/*
+ * Author: Mikhail Ulyanov <source@cogentembedded.com>
+ * Copyright (C) 2014 Cogent Embedded, Inc.
+ * Copyright (C) 2014 Renesas Electronics Corporation
+ *
+ * This is based on the drivers/media/platform/s5p-jpu driver by
+ * Andrzej Pietrasiewicz and Jacek Anaszewski.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+
+
+#define JPU_M2M_NAME "jpu"
+
+#define JPU_WIDTH_MIN 16
+#define JPU_HEIGHT_MIN 16
+#define JPU_WIDTH_MAX 4096
+#define JPU_HEIGHT_MAX 4096
+#define JPU_DEFAULT_WIDTH 640
+#define JPU_DEFAULT_HEIGHT 480
+
+#define JPU_ENCODE 0
+#define JPU_DECODE 1
+
+/* Flags that indicate a format can be used for capture/output */
+#define JPU_FMT_TYPE_OUTPUT 0
+#define JPU_FMT_TYPE_CAPTURE 1
+#define JPU_ENC_CAPTURE (1 << 0)
+#define JPU_ENC_OUTPUT (1 << 1)
+#define JPU_DEC_CAPTURE (1 << 2)
+#define JPU_DEC_OUTPUT (1 << 3)
+
+/*
+ * JPEG registers and bits
+ */
+
+/* JPEG code mode register */
+#define JCMOD 0x00
+#define JCMOD_SOI_DISABLE (1 << 8)
+#define JCMOD_SOI_ENABLE (0 << 8)
+#define JCMOD_PCTR (1 << 7)
+#define JCMOD_MSKIP_DISABLE (0 << 5)
+#define JCMOD_MSKIP_ENABLE (1 << 5)
+#define JCMOD_DSP_ENC (0 << 3)
+#define JCMOD_DSP_DEC (1 << 3)
+#define JCMOD_REDU (7 << 0)
+#define JCMOD_REDU_422 (1 << 0)
+#define JCMOD_REDU_420 (2 << 0)
+
+/* JPEG code command register */
+#define JCCMD 0x04
+#define JCCMD_SRST (1 << 12)
+#define JCCMD_BRST (1 << 7)
+#define JCCMD_JEND (1 << 2)
+#define JCCMD_JSRT (1 << 0)
+
+/* JPEG code quantanization table number register */
+#define JCQTN 0x0C
+#define JCQTN_SHIFT(t) (((t) - 1) << 1)
+
+/* JPEG code Huffman table number register */
+#define JCHTN 0x10
+#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
+#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
+
+#define JCDRIU 0x14 /* JPEG code DRI upper register */
+#define JCDRIL 0x18 /* JPEG code DRI lower register */
+#define JCVSZU 0x1C /* JPEG code vertical size upper register */
+#define JCVSZD 0x20 /* JPEG code vertical size lower register */
+#define JCHSZU 0x24 /* JPEG code horizontal size upper register */
+#define JCHSZD 0x28 /* JPEG code horizontal size lower register */
+#define JCSZ_MASK 0xff /* JPEG code h/v size register contains only 1 byte*/
+
+#define JCDTCU 0x2C /* JPEG code data count upper register */
+#define JCDTCM 0x30 /* JPEG code data count middle register */
+#define JCDTCD 0x34 /* JPEG code data count lower register */
+
+/* JPEG interrupt enable register */
+#define JINTE 0x38
+
+/* JPEG interrupt status register */
+#define JINTS 0x3C
+#define JINTS_MASK 0x7c68
+
+#define INT(n) (1 << n)
+
+#define JCDERR 0x40 /* JPEG code decode error register */
+
+/* JPEG interface encoding */
+#define JIFECNT 0x70
+#define JIFECNT_INFT_422 0
+#define JIFECNT_INFT_420 1
+#define JIFECNT_SWAP_WB (0x3 << 4)
+
+/* JPEG interface encode source Y address register 1 */
+#define JIFESYA1 0x74
+/* JPEG interface encode source C address register 1 */
+#define JIFESCA1 0x78
+/* JPEG interface encode source Y address register 2 */
+#define JIFESYA2 0x7C
+/* JPEG interface encode source C address register 2 */
+#define JIFESCA2 0x80
+/* JPEG interface encode source memory width register */
+#define JIFESMW 0x84
+/* JPEG interface encode source vertical size register */
+#define JIFESVSZ 0x88
+/* JPEG interface encode source horizontal size register */
+#define JIFESHSZ 0x8C
+/* JPEG interface encode destination address register 1 */
+#define JIFEDA1 0x90
+/* JPEG interface encode destination address register 2 */
+#define JIFEDA2 0x94
+
+/* JPEG decoding control register */
+#define JIFDCNT 0xA0
+#define JIFDCNT_SWAP (3 << 1)
+#define JIFDCNT_SWAP_NO (0 << 1)
+#define JIFDCNT_SWAP_BYTE (1 << 1)
+#define JIFDCNT_SWAP_WORD (2 << 1)
+#define JIFDCNT_SWAP_WB (3 << 1)
+
+/* JPEG decode source address register 1 */
+#define JIFDSA1 0xA4
+/* JPEG decode source address register 2 */
+#define JIFDSA2 0xA8
+/* JPEG decode data reload size register */
+#define JIFDDRSZ 0xAC
+/* JPEG decode data destination memory width register */
+#define JIFDDMW 0xB0
+/* JPEG decode data destination vertical size register */
+#define JIFDDVSZ 0xB4
+/* JPEG decode data destination horizontal size register */
+#define JIFDDHSZ 0xB8
+/* JPEG decode data destination Y address register 1 */
+#define JIFDDYA1 0xBC
+/* JPEG decode data destination C address register 1 */
+#define JIFDDCA1 0xC0
+/* JPEG decode data destination Y address register 2 */
+#define JIFDDYA2 0xC4
+/* JPEG decode data destination C address register 2 */
+#define JIFDDCA2 0xC8
+
+/* JPEG code quantization tables registers */
+#define JCQTBL(n) (0x10000 + (n) * 0x40)
+
+/* JPEG code Huffman table DC registers */
+#define JCHTBD(n) (0x10100 + (n) * 0x100)
+
+/* JPEG code Huffman table AC registers */
+#define JCHTBA(n) (0x10120 + (n) * 0x100)
+
+#define JPU_JPEG_HDR_SIZE 0x250
+
+enum jpu_status {
+ JPU_OK,
+ JPU_BUSY,
+ JPU_ERR
+};
+
+/**
+ * struct jpu - JPEG IP abstraction
+ * @mutex: the mutex protecting this structure
+ * @slock: spinlock protecting the device contexts
+ * @v4l2_dev: v4l2 device for mem2mem mode
+ * @vfd_encoder: video device node for encoder mem2mem mode
+ * @vfd_decoder: video device node for decoder mem2mem mode
+ * @m2m_dev: v4l2 mem2mem device data
+ * @regs: JPEG IP registers mapping
+ * @irq: JPEG IP irq
+ * @clk: JPEG IP clock
+ * @dev: JPEG IP struct device
+ * @alloc_ctx: videobuf2 memory allocator's context
+ * @bounds: platform specific IP limitations
+ * @wq: waitqueue for header parsing handling
+ * @statatus: current driver state variable
+ * @ref_counter: reference counter
+ */
+struct jpu {
+ struct mutex mutex;
+ spinlock_t slock;
+
+ struct v4l2_device v4l2_dev;
+ struct video_device *vfd_encoder;
+ struct video_device *vfd_decoder;
+ struct v4l2_m2m_dev *m2m_dev;
+
+ void __iomem *regs;
+ unsigned int irq;
+ struct clk *clk;
+ struct device *dev;
+ void *alloc_ctx;
+ struct jpu_bounds *bounds;
+ wait_queue_head_t wq;
+ enum jpu_status status;
+ int ref_count;
+};
+
+/**
+ * struct jpu_fmt - driver's internal format data
+ * @name: format descritpion
+ * @fourcc: the fourcc code, 0 if not applicable
+ * @colorspace: the colorspace specificator
+ * @depth: number of bits per pixel
+ * @h_align: horizontal alignment order (align to 2^h_align)
+ * @v_align: vertical alignment order (align to 2^v_align)
+ * @types: types of queue this format is applicable to
+ */
+struct jpu_fmt {
+ char *name;
+ u32 fourcc;
+ u32 colorspace;
+ int depth;
+ int h_align;
+ int v_align;
+ u32 types;
+};
+
+/**
+ * jpu_q_data - parameters of one queue
+ * @fmt: driver-specific format of this queue
+ * @default_fmt: default format of this queue
+ * @w: image width
+ * @h: image height
+ * @size: image buffer size in bytes
+ */
+struct jpu_q_data {
+ struct jpu_fmt *fmt;
+ struct jpu_fmt *default_fmt;
+ u32 w;
+ u32 h;
+ u32 size;
+};
+
+/**
+ * jpu_ctx - the device context data
+ * @jpu: JPEG IP device for this context
+ * @mode: compression (encode) operation or decompression (decode)
+ * @compr_quality: destination image quality in compression (encode) mode
+ * @out_q: source (output) queue information
+ * @fh: file handler;
+ * @hdr_parsed: set if header has been parsed during decompression
+ * @ctrl_handler: controls handler
+ */
+struct jpu_ctx {
+ struct jpu *jpu;
+ unsigned int mode;
+ unsigned short compr_quality;
+ struct jpu_q_data out_q;
+ struct jpu_q_data cap_q;
+ struct v4l2_fh fh;
+ bool hdr_parsed;
+ struct v4l2_ctrl_handler ctrl_handler;
+};
+
+static struct jpu_fmt jpu_formats[] = {
+ {
+ .name = "JPEG JFIF",
+ .fourcc = V4L2_PIX_FMT_JPEG,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .types = JPU_ENC_CAPTURE | JPU_DEC_OUTPUT,
+ },
+ {
+ .name = "YUV 4:2:2 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .depth = 16,
+ .h_align = 3,
+ .v_align = 3,
+ .types = JPU_ENC_OUTPUT,
+ },
+ {
+ .name = "YUV 4:2:0 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .depth = 12,
+ .h_align = 3,
+ .v_align = 3,
+ .types = JPU_ENC_OUTPUT,
+ },
+ {
+ .name = "YUV 4:2:2 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .depth = 16,
+ .h_align = 2,
+ .v_align = 2,
+ .types = JPU_DEC_CAPTURE,
+ },
+ {
+ .name = "YUV 4:2:0 semiplanar, YCbCr",
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .depth = 12,
+ .h_align = 2,
+ .v_align = 2,
+ .types = JPU_DEC_CAPTURE,
+ },
+};
+
+static const u8 zigzag[] = {
+ 0x03, 0x02, 0x0b, 0x13, 0x0a, 0x01, 0x00, 0x09,
+ 0x12, 0x1b, 0x23, 0x1a, 0x11, 0x08, 0x07, 0x06,
+ 0x0f, 0x10, 0x19, 0x22, 0x2b, 0x33, 0x2a, 0x21,
+ 0x18, 0x17, 0x0e, 0x05, 0x04, 0x0d, 0x16, 0x1f,
+ 0x20, 0x29, 0x32, 0x3b, 0x3a, 0x31, 0x28, 0x27,
+ 0x1e, 0x15, 0x0e, 0x14, 0x10, 0x26, 0x2f, 0x30,
+ 0x39, 0x38, 0x37, 0x2e, 0x25, 0x1c, 0x24, 0x2b,
+ 0x36, 0x3f, 0x3e, 0x35, 0x2c, 0x34, 0x3d, 0x3c
+};
+
+static unsigned char hdr_blob0[] = {
+ 0xff, 0xd8, 0xff, 0xfe, 0x00, 0x0e, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x84
+};
+
+static unsigned char hdr_blob1[] = {
+ 0xff, 0xc0, 0x00, 0x11, 0x08
+};
+
+static unsigned char hdr_blob2[] = {
+ 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff,
+ 0xc4, 0x01, 0xa2
+};
+
+static const unsigned int qtbl_lum[2][16] = {
+ {
+ 0x14401927, 0x322e3e44, 0x10121726, 0x26354144,
+ 0x19171f26, 0x35414444, 0x27262635, 0x41444444,
+ 0x32263541, 0x44444444, 0x2e354144, 0x44444444,
+ 0x3e414444, 0x44444444, 0x44444444, 0x44444444
+ },
+ {
+ 0x08060608, 0x0c0e1011, 0x06060608, 0x0a0d0c0f,
+ 0x06060708, 0x0d0e1218, 0x0808080e, 0x0d131823,
+ 0x0c0a0d0d, 0x141a2227, 0x0e0d0e13, 0x1a222727,
+ 0x100c1318, 0x22272727, 0x110f1823, 0x27272727
+ }
+};
+
+static const unsigned int qtbl_chr[2][16] = {
+ {
+ 0x15192026, 0x36444444, 0x191c1826, 0x36444444,
+ 0x2018202b, 0x42444444, 0x26262b35, 0x44444444,
+ 0x36424444, 0x44444444, 0x44444444, 0x44444444,
+ 0x44444444, 0x44444444, 0x44444444, 0x44444444
+ },
+ {
+ 0x0908090b, 0x0e111318, 0x080a090b, 0x0e0d1116,
+ 0x09090d0e, 0x0d0f171a, 0x0b0b0e0e, 0x0f141a21,
+ 0x0e0e0d0f, 0x14182127, 0x110d0f14, 0x18202727,
+ 0x1311171a, 0x21272727, 0x18161a21, 0x27272727
+ }
+};
+
+static const unsigned int hdctbl_lum[7] = {
+ 0x00010501, 0x01010101, 0x01000000, 0x00000000,
+ 0x00010203, 0x04050607, 0x08090a0b
+};
+
+static const unsigned int hdctbl_chr[7] = {
+ 0x00030101, 0x01010101, 0x01010100, 0x00000000,
+ 0x00010203, 0x04050607, 0x08090a0b
+};
+
+static const unsigned int hactbl_lum[45] = {
+ 0x00020103, 0x03020403, 0x05050404, 0x0000017d,
+ 0x01020300, 0x04110512, 0x21314106, 0x13516107,
+ 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
+ 0x24336272, 0x82090a16, 0x1718191a, 0x25262728,
+ 0x292a3435, 0x36373839, 0x3a434445, 0x46474849,
+ 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
+ 0x6a737475, 0x76777879, 0x7a838485, 0x86878889,
+ 0x8a929394, 0x95969798, 0x999aa2a3, 0xa4a5a6a7,
+ 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
+ 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2,
+ 0xe3e4e5e6, 0xe7e8e9ea, 0xf1f2f3f4, 0xf5f6f7f8,
+ 0xf9fa0000
+};
+
+static const unsigned int hactbl_chr[45] = {
+ 0x00020102, 0x04040304, 0x07050404, 0x00010277,
+ 0x00010203, 0x11040521, 0x31061241, 0x51076171,
+ 0x13223281, 0x08144291, 0xa1b1c109, 0x233352f0,
+ 0x156372d1, 0x0a162434, 0xe125f117, 0x18191a26,
+ 0x2728292a, 0x35363738, 0x393a4344, 0x45464748,
+ 0x494a5354, 0x55565758, 0x595a6364, 0x65666768,
+ 0x696a7374, 0x75767778, 0x797a8283, 0x84858687,
+ 0x88898a92, 0x93949596, 0x9798999a, 0xa2a3a4a5,
+ 0xa6a7a8a9, 0xaab2b3b4, 0xb5b6b7b8, 0xb9bac2c3,
+ 0xc4c5c6c7, 0xc8c9cad2, 0xd3d4d5d6, 0xd7d8d9da,
+ 0xe2e3e4e5, 0xe6e7e8e9, 0xeaf2f3f4, 0xf5f6f7f8,
+ 0xf9fa0000
+};
+
+static struct jpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
+{
+ return container_of(c->handler, struct jpu_ctx, ctrl_handler);
+}
+
+static struct jpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
+{
+ return container_of(fh, struct jpu_ctx, fh);
+}
+
+static void jpu_set_tbl(void __iomem *regs, const unsigned int *tbl,
+ int len) {
+ unsigned int i;
+
+ for (i = 0; i < len; i++)
+ iowrite32(tbl[i], regs + (i << 2));
+}
+
+static void jpu_set_qtbl(void __iomem *regs, int quality)
+{
+ jpu_set_tbl(regs + JCQTBL(0), qtbl_lum[quality],
+ ARRAY_SIZE(qtbl_lum[quality]));
+ jpu_set_tbl(regs + JCQTBL(1), qtbl_chr[quality],
+ ARRAY_SIZE(qtbl_chr[quality]));
+}
+
+static void jpu_set_htbl(void __iomem *regs)
+{
+ jpu_set_tbl(regs + JCHTBD(0), hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
+ jpu_set_tbl(regs + JCHTBD(1), hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
+ jpu_set_tbl(regs + JCHTBA(0), hactbl_lum, ARRAY_SIZE(hactbl_lum));
+ jpu_set_tbl(regs + JCHTBA(1), hactbl_chr, ARRAY_SIZE(hactbl_chr));
+}
+
+static void jpu_int_clear(void __iomem *regs, unsigned int int_status)
+{
+ iowrite32(~int_status & JINTS_MASK, regs + JINTS);
+
+ if (int_status & (INT(6) | INT(5) | INT(3)))
+ iowrite32(JCCMD_JEND, regs + JCCMD);
+}
+
+static void jpu_reset(void __iomem *regs)
+{
+ iowrite32(JCCMD_SRST, regs + JCCMD);
+ while ((ioread32(regs + JCCMD) & JCCMD_SRST) != 0)
+ cpu_relax();
+}
+
+/*
+ * ============================================================================
+ * video ioctl operations
+ * ============================================================================
+ */
+static void put_byte(unsigned long *p, u8 v)
+{
+ u8 *addr = (u8 *)*p;
+
+ *addr = v;
+ (*p)++;
+}
+
+static void put_short_be(unsigned long *p, u16 v)
+{
+ u16 *addr = (u16 *)*p;
+
+ *addr = cpu_to_be16(v);
+ *p += 2;
+}
+
+static void put_word_be(unsigned long *p, u32 v)
+{
+ u32 *addr = (u32 *)*p;
+
+ *addr = cpu_to_be32(v);
+ *p += 4;
+}
+
+static void put_blob_byte(unsigned long *p, const unsigned char *blob,
+ unsigned int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ put_byte(p, blob[i]);
+}
+
+static void put_qtbl(unsigned long *p, unsigned char id,
+ const unsigned int *qtbl)
+{
+ int i;
+
+ put_byte(p, id);
+ for (i = 0; i < ARRAY_SIZE(zigzag); i++)
+ put_byte(p, *((u8 *)qtbl + zigzag[i]));
+}
+
+static void put_htbl(unsigned long *p, unsigned char tc,
+ const unsigned int *htbl, unsigned int len)
+{
+ int i;
+
+ put_byte(p, tc);
+ for (i = 0; i < len; i++)
+ put_word_be(p, htbl[i]);
+}
+
+static void jpu_generate_hdr(struct jpu_q_data *q, int quality, void *buffer)
+{
+ /* SOI(2) - DQT(134 / 2 tables) - SOF0(19) - DHT(420 / 2 tables) */
+ unsigned long p = (unsigned long)buffer;
+
+ put_blob_byte(&p, hdr_blob0, ARRAY_SIZE(hdr_blob0));
+
+ put_qtbl(&p, 0x00, qtbl_lum[quality]);
+ put_qtbl(&p, 0x01, qtbl_chr[quality]);
+
+ put_blob_byte(&p, hdr_blob1, ARRAY_SIZE(hdr_blob1));
+
+ put_short_be(&p, q->h);
+ put_short_be(&p, q->w);
+
+ put_byte(&p, 0x03);
+ put_byte(&p, 0x01);
+
+ if (q->fmt->fourcc == V4L2_PIX_FMT_NV16)
+ put_byte(&p, 0x21);
+ else
+ put_byte(&p, 0x22);
+
+ put_blob_byte(&p, hdr_blob2, ARRAY_SIZE(hdr_blob2));
+
+ put_htbl(&p, 0x00, hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
+ put_htbl(&p, 0x10, hactbl_lum, ARRAY_SIZE(hactbl_lum));
+ p -= 2;
+
+ put_htbl(&p, 0x01, hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
+ put_htbl(&p, 0x11, hactbl_chr, ARRAY_SIZE(hactbl_chr));
+}
+
+static int jpu_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode == JPU_ENCODE) {
+ strlcpy(cap->driver, JPU_M2M_NAME " encoder",
+ sizeof(cap->driver));
+ strlcpy(cap->card, JPU_M2M_NAME " encoder",
+ sizeof(cap->card));
+ } else {
+ strlcpy(cap->driver, JPU_M2M_NAME " decoder",
+ sizeof(cap->driver));
+ strlcpy(cap->card, JPU_M2M_NAME " decoder",
+ sizeof(cap->card));
+ }
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ dev_name(ctx->jpu->dev));
+ cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+ return 0;
+}
+
+static struct jpu_fmt *jpu_find_format(unsigned int mode, u32 pixelformat,
+ unsigned int fmt_type)
+{
+ unsigned int k, fmt_flag;
+
+ if (mode == JPU_ENCODE)
+ fmt_flag = (fmt_type == JPU_FMT_TYPE_OUTPUT) ? JPU_ENC_OUTPUT :
+ JPU_ENC_CAPTURE;
+ else
+ fmt_flag = (fmt_type == JPU_FMT_TYPE_OUTPUT) ? JPU_DEC_OUTPUT :
+ JPU_DEC_CAPTURE;
+
+ for (k = 0; k < ARRAY_SIZE(jpu_formats); k++) {
+ struct jpu_fmt *fmt = &jpu_formats[k];
+
+ if (fmt->fourcc == pixelformat && fmt->types & fmt_flag)
+ return fmt;
+ }
+
+ return NULL;
+}
+
+static int jpu_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
+{
+ int i, num = 0;
+
+ for (i = 0; i < ARRAY_SIZE(jpu_formats); ++i) {
+ if (jpu_formats[i].types & type) {
+ /* index-th format of type type found ? */
+ if (num == f->index)
+ break;
+ /*
+ * Correct type but haven't reached our index yet,
+ * just increment per-type index
+ */
+ ++num;
+ }
+ }
+
+ /* Format not found */
+ if (i >= ARRAY_SIZE(jpu_formats))
+ return -EINVAL;
+
+ strlcpy(f->description, jpu_formats[i].name, sizeof(f->description));
+ f->pixelformat = jpu_formats[i].fourcc;
+
+ return 0;
+}
+
+static int jpu_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode == JPU_ENCODE)
+ return jpu_enum_fmt(f, JPU_ENC_CAPTURE);
+
+ return jpu_enum_fmt(f, JPU_DEC_CAPTURE);
+}
+
+static int jpu_enum_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode == JPU_ENCODE)
+ return jpu_enum_fmt(f, JPU_ENC_OUTPUT);
+
+ return jpu_enum_fmt(f, JPU_DEC_OUTPUT);
+}
+
+static struct jpu_q_data *jpu_get_q_data(struct jpu_ctx *ctx,
+ enum v4l2_buf_type type)
+{
+ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ return &ctx->out_q;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ return &ctx->cap_q;
+ default:
+ return NULL;
+ }
+}
+
+static int jpu_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct vb2_queue *vq;
+ struct jpu_q_data *q_data;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
+ ctx->mode == JPU_DECODE && !ctx->hdr_parsed)
+ return -EINVAL;
+
+ q_data = jpu_get_q_data(ctx, f->type);
+ if (!q_data)
+ return -EINVAL;
+
+ pix->width = q_data->w;
+ pix->height = q_data->h;
+ pix->field = V4L2_FIELD_NONE;
+ pix->pixelformat = q_data->fmt->fourcc;
+ pix->colorspace = q_data->fmt->colorspace;
+ pix->bytesperline = 0;
+ if (pix->pixelformat != V4L2_PIX_FMT_JPEG)
+ pix->bytesperline = q_data->w;
+ pix->sizeimage = q_data->size;
+
+ return 0;
+}
+
+
+static void jpu_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
+ unsigned int walign, u32 *h,
+ unsigned int hmin, unsigned int hmax,
+ unsigned int halign)
+{
+ int width, height, w_step, h_step;
+
+ width = *w;
+ height = *h;
+
+ w_step = 1 << walign;
+ h_step = 1 << halign;
+ v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 3);
+
+ if (*w < width && *w + w_step < wmax)
+ *w += w_step;
+ if (*h < height && *h + h_step < hmax)
+ *h += h_step;
+}
+
+
+static int jpu_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct jpu_fmt *fmt;
+ struct jpu_q_data *q_data;
+ unsigned int f_type;
+
+ q_data = jpu_get_q_data(ctx, f->type);
+ if (!q_data)
+ return -EINVAL;
+
+ f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
+ JPU_FMT_TYPE_CAPTURE;
+
+ fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
+ if (!fmt)
+ fmt = q_data->default_fmt;
+
+ pix->pixelformat = fmt->fourcc;
+ jpu_bound_align_image(&pix->width, JPU_WIDTH_MIN, JPU_WIDTH_MAX,
+ fmt->h_align, &pix->height, JPU_HEIGHT_MIN,
+ JPU_HEIGHT_MAX, fmt->v_align);
+
+ if (fmt->fourcc == V4L2_PIX_FMT_JPEG) {
+ if (pix->sizeimage <= 0)
+ pix->sizeimage = PAGE_SIZE;
+ pix->bytesperline = 0;
+ } else {
+ if (pix->bytesperline < pix->width)
+ pix->bytesperline = pix->width;
+
+ pix->sizeimage = (pix->width * pix->height * fmt->depth) >> 3;
+ }
+
+ pix->field = V4L2_FIELD_NONE;
+ pix->colorspace = fmt->colorspace;
+
+ return 0;
+}
+
+static int jpu_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct vb2_queue *vq;
+ struct jpu_q_data *q_data;
+ unsigned int f_type;
+ int ret;
+
+ ret = jpu_try_fmt(file, priv, f);
+ if (ret)
+ return ret;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ q_data = jpu_get_q_data(ctx, f->type);
+ if (!q_data)
+ return -EINVAL;
+
+ if (vb2_is_busy(vq)) {
+ v4l2_err(&ctx->jpu->v4l2_dev, "%s queue busy\n", __func__);
+ return -EBUSY;
+ }
+
+ f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
+ JPU_FMT_TYPE_CAPTURE;
+
+ q_data->fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
+ q_data->w = pix->width;
+ q_data->h = pix->height;
+ if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
+ q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3;
+ else
+ q_data->size = pix->sizeimage;
+
+ return 0;
+}
+
+static int jpu_g_selection(struct file *file, void *priv,
+ struct v4l2_selection *s)
+{
+ struct jpu_ctx *ctx = fh_to_ctx(priv);
+
+ return -ENOTTY;
+
+ if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
+ s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ switch (s->target) {
+ case V4L2_SEL_TGT_CROP:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_COMPOSE:
+ case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+ s->r.width = ctx->out_q.w;
+ s->r.height = ctx->out_q.h;
+ break;
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ case V4L2_SEL_TGT_COMPOSE_PADDED:
+ s->r.width = ctx->cap_q.w;
+ s->r.height = ctx->cap_q.h;
+ break;
+ default:
+ return -EINVAL;
+ }
+ s->r.left = 0;
+ s->r.top = 0;
+ return 0;
+}
+
+/*
+ * V4L2 controls
+ */
+static int jpu_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct jpu_ctx *ctx = ctrl_to_ctx(ctrl);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ctx->jpu->slock, flags);
+
+ if (ctrl->id == V4L2_CID_JPEG_COMPRESSION_QUALITY)
+ ctx->compr_quality = ctrl->val;
+
+ spin_unlock_irqrestore(&ctx->jpu->slock, flags);
+ return 0;
+}
+
+static int jpu_g_priority(struct file *file, void *priv, enum v4l2_priority *p)
+{
+ return -ENOTTY;
+}
+
+static int jpu_s_priority(struct file *file, void *priv, enum v4l2_priority p)
+{
+ return -ENOTTY;
+}
+
+static const struct v4l2_ctrl_ops jpu_ctrl_ops = {
+ .s_ctrl = jpu_s_ctrl,
+};
+
+static const struct v4l2_ioctl_ops jpu_ioctl_ops = {
+ .vidioc_querycap = jpu_querycap,
+
+ .vidioc_enum_fmt_vid_cap = jpu_enum_fmt_vid_cap,
+ .vidioc_enum_fmt_vid_out = jpu_enum_fmt_vid_out,
+
+ .vidioc_g_fmt_vid_cap = jpu_g_fmt,
+ .vidioc_g_fmt_vid_out = jpu_g_fmt,
+
+ .vidioc_try_fmt_vid_cap = jpu_try_fmt,
+ .vidioc_try_fmt_vid_out = jpu_try_fmt,
+
+ .vidioc_s_fmt_vid_cap = jpu_s_fmt,
+ .vidioc_s_fmt_vid_out = jpu_s_fmt,
+
+ .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
+ .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
+ .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
+ .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
+ .vidioc_streamon = v4l2_m2m_ioctl_streamon,
+ .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
+
+ .vidioc_g_selection = jpu_g_selection,
+ .vidioc_s_priority = jpu_s_priority,
+ .vidioc_g_priority = jpu_g_priority,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe
+};
+
+static int jpu_controls_create(struct jpu_ctx *ctx)
+{
+ struct v4l2_ctrl *ctrl;
+
+ v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
+
+ if (ctx->mode == JPU_ENCODE) {
+ v4l2_ctrl_new_std(&ctx->ctrl_handler, &jpu_ctrl_ops,
+ V4L2_CID_JPEG_COMPRESSION_QUALITY,
+ 0, 1, 1, 1);
+ }
+
+ if (ctx->ctrl_handler.error)
+ return ctx->ctrl_handler.error;
+
+ if (ctx->mode == JPU_DECODE)
+ ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
+ V4L2_CTRL_FLAG_READ_ONLY;
+
+ return 0;
+}
+
+/*
+ * ============================================================================
+ * Queue operations
+ * ============================================================================
+ */
+static int jpu_queue_setup(struct vb2_queue *vq,
+ const struct v4l2_format *fmt,
+ unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
+ struct jpu_q_data *q_data;
+ unsigned int size, count = *nbuffers;
+
+ q_data = jpu_get_q_data(ctx, vq->type);
+ if (q_data == NULL)
+ return -EINVAL;
+
+ size = q_data->size;
+
+ /*
+ * Header is parsed during decoding and parsed information stored
+ * in the context so we do not allow another buffer to overwrite it
+ */
+ if (ctx->mode == JPU_DECODE)
+ count = 1;
+
+ *nbuffers = count;
+ *nplanes = 1;
+ sizes[0] = size;
+ alloc_ctxs[0] = ctx->jpu->alloc_ctx;
+
+ return 0;
+}
+
+static int jpu_buf_prepare(struct vb2_buffer *vb)
+{
+ struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct jpu_q_data *q_data;
+
+ q_data = jpu_get_q_data(ctx, vb->vb2_queue->type);
+ if (q_data == NULL)
+ return -EINVAL;
+
+ if (vb2_plane_size(vb, 0) < q_data->size) {
+ pr_err("%s: data will not fit into plane (%lu < %lu)\n",
+ __func__, vb2_plane_size(vb, 0), (long)q_data->size);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(vb, 0, q_data->size);
+
+ return 0;
+}
+
+static void jpu_buf_queue(struct vb2_buffer *vb)
+{
+ struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+
+ if (ctx->mode == JPU_DECODE &&
+ vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ struct jpu_q_data *q_data;
+ struct jpu *jpu = ctx->jpu;
+ unsigned int subsampling, w_out, h_out, w_cap, h_cap;
+ unsigned long src_addr, flags;
+
+ src_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
+
+ jpu_reset(jpu->regs);
+
+ iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
+ iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
+ iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
+
+ spin_lock_irqsave(&jpu->slock, flags);
+ jpu->status = JPU_BUSY;
+ spin_unlock_irqrestore(&ctx->jpu->slock, flags);
+
+ iowrite32(INT(3), jpu->regs + JINTE);
+ iowrite32(src_addr, jpu->regs + JIFDSA1);
+ iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
+
+ if (wait_event_interruptible_timeout(jpu->wq,
+ jpu->status != JPU_BUSY,
+ msecs_to_jiffies(100)) > 0
+ && jpu->status == JPU_OK)
+ ctx->hdr_parsed = true;
+
+ w_out = ioread32(jpu->regs + JCHSZU) << 8 |
+ ioread32(jpu->regs + JCHSZD);
+
+ h_out = ioread32(jpu->regs + JCVSZU) << 8 |
+ ioread32(jpu->regs + JCVSZD);
+
+ w_cap = ioread32(jpu->regs + JIFDDHSZ);
+ h_cap = ioread32(jpu->regs + JIFDDVSZ);
+
+ switch (ioread32(jpu->regs + JCMOD) & JCMOD_REDU) {
+ case JCMOD_REDU_422:
+ subsampling = V4L2_PIX_FMT_NV16;
+ break;
+ case JCMOD_REDU_420:
+ subsampling = V4L2_PIX_FMT_NV12;
+ break;
+ default:
+ subsampling = 0;
+ }
+
+ if (!ctx->hdr_parsed || !subsampling || w_out > JPU_WIDTH_MAX ||
+ w_out < JPU_WIDTH_MIN || h_out > JPU_HEIGHT_MAX ||
+ h_out < JPU_HEIGHT_MIN) {
+ pr_err("incompatible or corrupted JPEG data\n");
+ vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
+ return;
+ }
+
+ q_data = &ctx->out_q;
+ q_data->w = w_out;
+ q_data->h = h_out;
+
+ q_data = &ctx->cap_q;
+ q_data->w = w_cap;
+ q_data->h = h_cap;
+
+ q_data->fmt = jpu_find_format(JPU_DECODE, subsampling,
+ JPU_FMT_TYPE_CAPTURE);
+
+ q_data->size =
+ (q_data->w * q_data->h * q_data->fmt->depth) >> 3;
+ }
+
+ if (ctx->fh.m2m_ctx)
+ v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
+}
+
+static int jpu_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ return 0;
+}
+
+static void jpu_stop_streaming(struct vb2_queue *q)
+{
+}
+
+static struct vb2_ops jpu_qops = {
+ .queue_setup = jpu_queue_setup,
+ .buf_prepare = jpu_buf_prepare,
+ .buf_queue = jpu_buf_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .start_streaming = jpu_start_streaming,
+ .stop_streaming = jpu_stop_streaming,
+};
+
+static int jpu_queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct jpu_ctx *ctx = priv;
+ int ret;
+
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ src_vq->drv_priv = ctx;
+ src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ src_vq->ops = &jpu_qops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+ src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ src_vq->lock = &ctx->jpu->mutex;
+
+ ret = vb2_queue_init(src_vq);
+ if (ret)
+ return ret;
+
+ dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ dst_vq->drv_priv = ctx;
+ dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ dst_vq->ops = &jpu_qops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+ dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ dst_vq->lock = &ctx->jpu->mutex;
+
+ return vb2_queue_init(dst_vq);
+}
+
+/*
+ * ============================================================================
+ * Device file operations
+ * ============================================================================
+ */
+static int jpu_open(struct file *file)
+{
+ struct jpu *jpu = video_drvdata(file);
+ struct video_device *vfd = video_devdata(file);
+ struct jpu_ctx *ctx;
+ struct jpu_q_data *out_q, *cap_q;
+ int ret = 0;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ if (mutex_lock_interruptible(&jpu->mutex)) {
+ ret = -ERESTARTSYS;
+ goto free;
+ }
+
+ v4l2_fh_init(&ctx->fh, vfd);
+ ctx->fh.ctrl_handler = &ctx->ctrl_handler;
+ file->private_data = &ctx->fh;
+ v4l2_fh_add(&ctx->fh);
+
+ out_q = &ctx->out_q;
+ cap_q = &ctx->cap_q;
+
+ out_q->w = JPU_DEFAULT_WIDTH;
+ out_q->h = JPU_DEFAULT_HEIGHT;
+
+ cap_q->w = JPU_DEFAULT_WIDTH;
+ cap_q->h = JPU_DEFAULT_HEIGHT;
+
+ ctx->jpu = jpu;
+ if (vfd == jpu->vfd_encoder) {
+ ctx->mode = JPU_ENCODE;
+ out_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
+ JPU_FMT_TYPE_OUTPUT);
+ cap_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
+ JPU_FMT_TYPE_CAPTURE);
+ out_q->size = (out_q->w * out_q->h * out_q->fmt->depth) >> 3;
+ cap_q->size = PAGE_SIZE;
+ } else {
+ ctx->mode = JPU_DECODE;
+ out_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
+ JPU_FMT_TYPE_OUTPUT);
+ cap_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
+ JPU_FMT_TYPE_CAPTURE);
+ out_q->size = PAGE_SIZE;
+ cap_q->size = (cap_q->w * cap_q->h * cap_q->fmt->depth) >> 3;
+ }
+
+ out_q->default_fmt = out_q->fmt;
+ cap_q->default_fmt = cap_q->fmt;
+
+ ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpu->m2m_dev, ctx, jpu_queue_init);
+ if (IS_ERR(ctx->fh.m2m_ctx)) {
+ ret = PTR_ERR(ctx->fh.m2m_ctx);
+ goto error;
+ }
+
+ ret = jpu_controls_create(ctx);
+ if (ret < 0)
+ goto error;
+
+ if (jpu->ref_count == 0) {
+ ret = clk_prepare_enable(jpu->clk);
+ if (ret < 0)
+ goto error;
+ }
+
+ jpu->ref_count++;
+
+ mutex_unlock(&jpu->mutex);
+ return 0;
+
+error:
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ mutex_unlock(&jpu->mutex);
+free:
+ kfree(ctx);
+ return ret;
+}
+
+static int jpu_release(struct file *file)
+{
+ struct jpu *jpu = video_drvdata(file);
+ struct jpu_ctx *ctx = fh_to_ctx(file->private_data);
+
+ mutex_lock(&jpu->mutex);
+ if (--jpu->ref_count == 0)
+ clk_disable_unprepare(jpu->clk);
+ v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
+ v4l2_ctrl_handler_free(&ctx->ctrl_handler);
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ kfree(ctx);
+ mutex_unlock(&jpu->mutex);
+
+ return 0;
+}
+
+static const struct v4l2_file_operations jpu_fops = {
+ .owner = THIS_MODULE,
+ .open = jpu_open,
+ .release = jpu_release,
+ .unlocked_ioctl = video_ioctl2,
+ .poll = v4l2_m2m_fop_poll,
+ .mmap = v4l2_m2m_fop_mmap,
+};
+
+/*
+ * ============================================================================
+ * mem2mem callbacks
+ * ============================================================================
+ */
+static void jpu_device_run(void *priv)
+{
+ struct jpu_ctx *ctx = priv;
+ struct jpu *jpu = ctx->jpu;
+ struct vb2_buffer *src_buf, *dst_buf;
+ unsigned long src_addr, dst_addr, flags;
+ void *dst_vaddr;
+ unsigned int w, h;
+
+ spin_lock_irqsave(&ctx->jpu->slock, flags);
+
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+ dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+ dst_vaddr = vb2_plane_vaddr(dst_buf, 0);
+
+ jpu_reset(jpu->regs);
+
+ if (ctx->mode == JPU_ENCODE) {
+ unsigned int redu, inft;
+
+ w = ctx->out_q.w;
+ h = ctx->out_q.h;
+
+ jpu_generate_hdr(&ctx->out_q, ctx->compr_quality, dst_vaddr);
+
+ if (ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_NV12) {
+ redu = JCMOD_REDU_420;
+ inft = JIFECNT_INFT_420;
+ } else {
+ redu = JCMOD_REDU_422;
+ inft = JIFECNT_INFT_422;
+ }
+
+ /* the only no marker mode works for encoding */
+ iowrite32(JCMOD_DSP_ENC | JCMOD_PCTR | redu | JCMOD_SOI_ENABLE |
+ JCMOD_MSKIP_ENABLE, jpu->regs + JCMOD);
+
+ iowrite32(JIFECNT_SWAP_WB | inft, jpu->regs + JIFECNT);
+ iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
+ iowrite32(INT(10), jpu->regs + JINTE);
+
+ /* Y and C components source addresses */
+ iowrite32(src_addr, jpu->regs + JIFESYA1);
+ iowrite32(src_addr + w * h, jpu->regs + JIFESCA1);
+
+ /* memory width */
+ iowrite32(w, jpu->regs + JIFESMW);
+
+ iowrite32((w >> 8) & JCSZ_MASK, jpu->regs + JCHSZU);
+ iowrite32(w & JCSZ_MASK, jpu->regs + JCHSZD);
+
+ iowrite32((h >> 8) & JCSZ_MASK, jpu->regs + JCVSZU);
+ iowrite32(h & JCSZ_MASK, jpu->regs + JCVSZD);
+
+ iowrite32(w, jpu->regs + JIFESHSZ);
+ iowrite32(h, jpu->regs + JIFESVSZ);
+
+ iowrite32(dst_addr + JPU_JPEG_HDR_SIZE, jpu->regs + JIFEDA1);
+
+ iowrite32(0 << JCQTN_SHIFT(1) | 1 << JCQTN_SHIFT(2) |
+ 1 << JCQTN_SHIFT(3), jpu->regs + JCQTN);
+
+ iowrite32(0 << JCHTN_AC_SHIFT(1) | 0 << JCHTN_DC_SHIFT(1) |
+ 1 << JCHTN_AC_SHIFT(2) | 1 << JCHTN_DC_SHIFT(2) |
+ 1 << JCHTN_AC_SHIFT(3) | 1 << JCHTN_DC_SHIFT(3),
+ jpu->regs + JCHTN);
+
+ jpu_set_qtbl(jpu->regs, ctx->compr_quality);
+ jpu_set_htbl(jpu->regs);
+ } else {
+ w = ctx->cap_q.w;
+ h = ctx->cap_q.h;
+
+ iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
+ iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
+ iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
+ iowrite32(INT(10) | INT(7) | INT(6) | INT(5),
+ jpu->regs + JINTE);
+ iowrite32(src_addr, jpu->regs + JIFDSA1);
+ iowrite32(w, jpu->regs + JIFDDMW);
+ iowrite32(dst_addr, jpu->regs + JIFDDYA1);
+ iowrite32(dst_addr + w * h, jpu->regs + JIFDDCA1);
+ }
+
+ iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
+ spin_unlock_irqrestore(&ctx->jpu->slock, flags);
+}
+
+static int jpu_job_ready(void *priv)
+{
+ struct jpu_ctx *ctx = priv;
+
+ if (ctx->mode == JPU_DECODE)
+ return ctx->hdr_parsed;
+ return 1;
+}
+
+static void jpu_job_abort(void *priv)
+{
+}
+
+static struct v4l2_m2m_ops jpu_m2m_ops = {
+ .device_run = jpu_device_run,
+ .job_ready = jpu_job_ready,
+ .job_abort = jpu_job_abort,
+};
+
+/*
+ * ============================================================================
+ * IRQ handler
+ * ============================================================================
+ */
+static irqreturn_t jpu_irq_handler(int irq, void *dev_id)
+{
+ struct jpu *jpu = dev_id;
+ struct jpu_ctx *curr_ctx;
+ struct vb2_buffer *src_buf, *dst_buf;
+ unsigned long payload_size = 0;
+ unsigned int int_status;
+ unsigned int error;
+
+ spin_lock(&jpu->slock);
+
+ int_status = ioread32(jpu->regs + JINTS);
+ jpu_int_clear(jpu->regs, int_status);
+
+ /*
+ * In any mode (decoding/encoding) we can additionaly get
+ * error status (5th bit)
+ * jpu operation complete status (6th bit)
+ */
+ if (!((ioread32(jpu->regs + JINTE) | INT(5) | INT(6)) & int_status)) {
+ spin_unlock(&jpu->slock);
+ return IRQ_NONE;
+ }
+
+ if (jpu->status == JPU_BUSY) {
+ if (int_status & INT(3))
+ jpu->status = JPU_OK;
+ if (int_status & INT(5))
+ jpu->status = JPU_ERR;
+ wake_up_interruptible(&jpu->wq);
+ goto handled;
+ }
+
+ if ((int_status & INT(6)) && !(int_status & INT(10)))
+ goto handled;
+
+ curr_ctx = v4l2_m2m_get_curr_priv(jpu->m2m_dev);
+
+ src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
+
+ if (int_status & INT(10)) {
+ if (curr_ctx->mode == JPU_ENCODE) {
+ payload_size = ioread32(jpu->regs + JCDTCU) << 16 |
+ ioread32(jpu->regs + JCDTCM) << 8 |
+ ioread32(jpu->regs + JCDTCD);
+ vb2_set_plane_payload(dst_buf, 0,
+ payload_size + JPU_JPEG_HDR_SIZE);
+ }
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
+ } else if (int_status & INT(5)) {
+ error = ioread32(jpu->regs + JCDERR);
+ dev_err(jpu->dev, "error 0x%X\n", error);
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
+ }
+
+ v4l2_m2m_job_finish(jpu->m2m_dev, curr_ctx->fh.m2m_ctx);
+
+handled:
+ spin_unlock(&jpu->slock);
+ return IRQ_HANDLED;
+}
+
+/*
+ * ============================================================================
+ * Driver basic infrastructure
+ * ============================================================================
+ */
+static const struct of_device_id jpu_dt_ids[] = {
+ { .compatible = "renesas,jpu-r8a7790" },
+ { .compatible = "renesas,jpu-r8a7791" },
+ { .compatible = "renesas,jpu-gen2" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, jpu_dt_ids);
+
+static int jpu_probe(struct platform_device *pdev)
+{
+ struct jpu *jpu;
+ struct resource *res;
+ int ret;
+
+ jpu = devm_kzalloc(&pdev->dev, sizeof(struct jpu), GFP_KERNEL);
+ if (!jpu)
+ return -ENOMEM;
+
+ mutex_init(&jpu->mutex);
+ spin_lock_init(&jpu->slock);
+ jpu->dev = &pdev->dev;
+
+ /* memory-mapped registers */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ jpu->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(jpu->regs))
+ return PTR_ERR(jpu->regs);
+
+ /* interrupt service routine registration */
+ jpu->irq = ret = platform_get_irq(pdev, 0);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "cannot find IRQ\n");
+ return ret;
+ }
+
+ ret = devm_request_irq(&pdev->dev, jpu->irq, jpu_irq_handler, 0,
+ dev_name(&pdev->dev), jpu);
+ if (ret) {
+ dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpu->irq);
+ return ret;
+ }
+
+ /* clocks */
+ jpu->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(jpu->clk)) {
+ dev_err(&pdev->dev, "cannot get clock\n");
+ ret = PTR_ERR(jpu->clk);
+ return ret;
+ }
+
+ /* v4l2 device */
+ ret = v4l2_device_register(&pdev->dev, &jpu->v4l2_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register v4l2 device\n");
+ goto clk_get_rollback;
+ }
+
+ /* mem2mem device */
+ jpu->m2m_dev = v4l2_m2m_init(&jpu_m2m_ops);
+ if (IS_ERR(jpu->m2m_dev)) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to init mem2mem device\n");
+ ret = PTR_ERR(jpu->m2m_dev);
+ goto device_register_rollback;
+ }
+
+ jpu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
+ if (IS_ERR(jpu->alloc_ctx)) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to init memory allocator\n");
+ ret = PTR_ERR(jpu->alloc_ctx);
+ goto m2m_init_rollback;
+ }
+
+ /* JPEG encoder /dev/videoX node */
+ jpu->vfd_encoder = video_device_alloc();
+ if (!jpu->vfd_encoder) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
+ ret = -ENOMEM;
+ goto vb2_allocator_rollback;
+ }
+ strlcpy(jpu->vfd_encoder->name, JPU_M2M_NAME,
+ sizeof(jpu->vfd_encoder->name));
+ jpu->vfd_encoder->fops = &jpu_fops;
+ jpu->vfd_encoder->ioctl_ops = &jpu_ioctl_ops;
+ jpu->vfd_encoder->minor = -1;
+ jpu->vfd_encoder->release = video_device_release;
+ jpu->vfd_encoder->lock = &jpu->mutex;
+ jpu->vfd_encoder->v4l2_dev = &jpu->v4l2_dev;
+ jpu->vfd_encoder->vfl_dir = VFL_DIR_M2M;
+
+ ret = video_register_device(jpu->vfd_encoder, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
+ goto enc_vdev_alloc_rollback;
+ }
+
+ video_set_drvdata(jpu->vfd_encoder, jpu);
+ v4l2_info(&jpu->v4l2_dev, "encoder device registered as /dev/video%d\n",
+ jpu->vfd_encoder->num);
+
+ /* JPEG decoder /dev/videoX node */
+ jpu->vfd_decoder = video_device_alloc();
+ if (!jpu->vfd_decoder) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
+ ret = -ENOMEM;
+ goto enc_vdev_register_rollback;
+ }
+ strlcpy(jpu->vfd_decoder->name, JPU_M2M_NAME,
+ sizeof(jpu->vfd_decoder->name));
+ jpu->vfd_decoder->fops = &jpu_fops;
+ jpu->vfd_decoder->ioctl_ops = &jpu_ioctl_ops;
+ jpu->vfd_decoder->minor = -1;
+ jpu->vfd_decoder->release = video_device_release;
+ jpu->vfd_decoder->lock = &jpu->mutex;
+ jpu->vfd_decoder->v4l2_dev = &jpu->v4l2_dev;
+ jpu->vfd_decoder->vfl_dir = VFL_DIR_M2M;
+
+ ret = video_register_device(jpu->vfd_decoder, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
+ goto dec_vdev_alloc_rollback;
+ }
+
+ video_set_drvdata(jpu->vfd_decoder, jpu);
+ v4l2_info(&jpu->v4l2_dev, "decoder device registered as /dev/video%d\n",
+ jpu->vfd_decoder->num);
+
+ /* final statements & power management */
+ platform_set_drvdata(pdev, jpu);
+
+ init_waitqueue_head(&jpu->wq);
+
+ v4l2_info(&jpu->v4l2_dev, "Renesas JPEG codec\n");
+
+ return 0;
+
+dec_vdev_alloc_rollback:
+ video_device_release(jpu->vfd_decoder);
+
+enc_vdev_register_rollback:
+ video_unregister_device(jpu->vfd_encoder);
+
+enc_vdev_alloc_rollback:
+ video_device_release(jpu->vfd_encoder);
+
+vb2_allocator_rollback:
+ vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
+
+m2m_init_rollback:
+ v4l2_m2m_release(jpu->m2m_dev);
+
+device_register_rollback:
+ v4l2_device_unregister(&jpu->v4l2_dev);
+
+clk_get_rollback:
+ clk_disable_unprepare(jpu->clk);
+
+ return ret;
+}
+
+static int jpu_remove(struct platform_device *pdev)
+{
+ struct jpu *jpu = platform_get_drvdata(pdev);
+
+ video_unregister_device(jpu->vfd_decoder);
+ video_device_release(jpu->vfd_decoder);
+ video_unregister_device(jpu->vfd_encoder);
+ video_device_release(jpu->vfd_encoder);
+ vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
+ v4l2_m2m_release(jpu->m2m_dev);
+ v4l2_device_unregister(&jpu->v4l2_dev);
+ clk_disable_unprepare(jpu->clk);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int jpu_suspend(struct device *dev)
+{
+ struct jpu *jpu = dev_get_drvdata(dev);
+
+ if (jpu->ref_count == 0)
+ return 0;
+
+ clk_disable_unprepare(jpu->clk);
+
+ return 0;
+}
+
+static int jpu_resume(struct device *dev)
+{
+ struct jpu *jpu = dev_get_drvdata(dev);
+
+ if (jpu->ref_count)
+ return 0;
+
+ clk_prepare_enable(jpu->clk);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops jpu_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(jpu_suspend, jpu_resume)
+};
+
+static struct platform_driver jpu_driver = {
+ .probe = jpu_probe,
+ .remove = jpu_remove,
+ .driver = {
+ .of_match_table = jpu_dt_ids,
+ .owner = THIS_MODULE,
+ .name = JPU_M2M_NAME,
+ .pm = &jpu_pm_ops,
+ },
+};
+
+module_platform_driver(jpu_driver);
+
+MODULE_ALIAS("jpu");
+MODULE_AUTHOR("Mikhail Ulianov <mikhail.ulyanov@cogentembedded.com>");
+MODULE_DESCRIPTION("Renesas JPEG codec driver");
+MODULE_LICENSE("GPL v2");
--
2.1.0.rc1
^ permalink raw reply related [flat|nested] 78+ messages in thread* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-25 12:29 ` Mikhail Ulyanov
@ 2014-08-25 12:39 ` Hans Verkuil
-1 siblings, 0 replies; 78+ messages in thread
From: Hans Verkuil @ 2014-08-25 12:39 UTC (permalink / raw)
To: Mikhail Ulyanov, horms, magnus.damm, m.chehab, robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
On 08/25/2014 02:29 PM, Mikhail Ulyanov wrote:
> This patch contains driver for Renesas R-Car JPEG codec.
>
> Cnanges since v1:
> - s/g_fmt function simplified
> - default format for queues added
> - dumb vidioc functions added to be in compliance with standard api:
> jpu_s_priority, jpu_g_priority
Oops, that's a bug elsewhere. Don't add these empty prio ops, this needs to be
solved in the v4l2 core.
I'll post a patch for this.
Regards,
Hans
> - standard v4l2_ctrl_subscribe_event and v4l2_event_unsubscribe
> now in use by the same reason
^ permalink raw reply [flat|nested] 78+ messages in thread
* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-08-25 12:39 ` Hans Verkuil
0 siblings, 0 replies; 78+ messages in thread
From: Hans Verkuil @ 2014-08-25 12:39 UTC (permalink / raw)
To: Mikhail Ulyanov, horms, magnus.damm, m.chehab, robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
On 08/25/2014 02:29 PM, Mikhail Ulyanov wrote:
> This patch contains driver for Renesas R-Car JPEG codec.
>
> Cnanges since v1:
> - s/g_fmt function simplified
> - default format for queues added
> - dumb vidioc functions added to be in compliance with standard api:
> jpu_s_priority, jpu_g_priority
Oops, that's a bug elsewhere. Don't add these empty prio ops, this needs to be
solved in the v4l2 core.
I'll post a patch for this.
Regards,
Hans
> - standard v4l2_ctrl_subscribe_event and v4l2_event_unsubscribe
> now in use by the same reason
^ permalink raw reply [flat|nested] 78+ messages in thread
* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-25 12:39 ` Hans Verkuil
@ 2014-08-25 12:49 ` Hans Verkuil
-1 siblings, 0 replies; 78+ messages in thread
From: Hans Verkuil @ 2014-08-25 12:49 UTC (permalink / raw)
To: Mikhail Ulyanov, horms, magnus.damm, m.chehab, robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
On 08/25/2014 02:39 PM, Hans Verkuil wrote:
> On 08/25/2014 02:29 PM, Mikhail Ulyanov wrote:
>> This patch contains driver for Renesas R-Car JPEG codec.
>>
>> Cnanges since v1:
>> - s/g_fmt function simplified
>> - default format for queues added
>> - dumb vidioc functions added to be in compliance with standard api:
>> jpu_s_priority, jpu_g_priority
>
> Oops, that's a bug elsewhere. Don't add these empty prio ops, this needs to be
> solved in the v4l2 core.
>
> I'll post a patch for this.
After some thought I've decided to allow prio handling for m2m devices. It is
actually useful if some application wants exclusive access to the m2m hardware.
So I will change v4l2-compliance instead.
Regards,
Hans
^ permalink raw reply [flat|nested] 78+ messages in thread
* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-08-25 12:49 ` Hans Verkuil
0 siblings, 0 replies; 78+ messages in thread
From: Hans Verkuil @ 2014-08-25 12:49 UTC (permalink / raw)
To: Mikhail Ulyanov, horms, magnus.damm, m.chehab, robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
On 08/25/2014 02:39 PM, Hans Verkuil wrote:
> On 08/25/2014 02:29 PM, Mikhail Ulyanov wrote:
>> This patch contains driver for Renesas R-Car JPEG codec.
>>
>> Cnanges since v1:
>> - s/g_fmt function simplified
>> - default format for queues added
>> - dumb vidioc functions added to be in compliance with standard api:
>> jpu_s_priority, jpu_g_priority
>
> Oops, that's a bug elsewhere. Don't add these empty prio ops, this needs to be
> solved in the v4l2 core.
>
> I'll post a patch for this.
After some thought I've decided to allow prio handling for m2m devices. It is
actually useful if some application wants exclusive access to the m2m hardware.
So I will change v4l2-compliance instead.
Regards,
Hans
^ permalink raw reply [flat|nested] 78+ messages in thread
* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-25 12:49 ` Hans Verkuil
@ 2014-09-21 17:56 ` Sergei Shtylyov
-1 siblings, 0 replies; 78+ messages in thread
From: Sergei Shtylyov @ 2014-09-21 17:56 UTC (permalink / raw)
To: Hans Verkuil, Mikhail Ulyanov, horms, magnus.damm, m.chehab,
robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
Hello.
On 08/25/2014 04:49 PM, Hans Verkuil wrote:
>>> This patch contains driver for Renesas R-Car JPEG codec.
>>> Cnanges since v1:
>>> - s/g_fmt function simplified
>>> - default format for queues added
>>> - dumb vidioc functions added to be in compliance with standard api:
>>> jpu_s_priority, jpu_g_priority
>> Oops, that's a bug elsewhere. Don't add these empty prio ops, this needs to be
>> solved in the v4l2 core.
>> I'll post a patch for this.
> After some thought I've decided to allow prio handling for m2m devices. It is
> actually useful if some application wants exclusive access to the m2m hardware.
> So I will change v4l2-compliance instead.
I take it we don't need to change the driver? Asking because the driver
seems stuck for nearly a months now.
I'm myself still seeing a place for improvement (register macro naming of
the top of my head). Perhaps it's time to take this driver into my own hands...
> Regards,
> Hans
WBR, Sergei
^ permalink raw reply [flat|nested] 78+ messages in thread* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-09-21 17:56 ` Sergei Shtylyov
0 siblings, 0 replies; 78+ messages in thread
From: Sergei Shtylyov @ 2014-09-21 17:56 UTC (permalink / raw)
To: Hans Verkuil, Mikhail Ulyanov, horms, magnus.damm, m.chehab,
robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
Hello.
On 08/25/2014 04:49 PM, Hans Verkuil wrote:
>>> This patch contains driver for Renesas R-Car JPEG codec.
>>> Cnanges since v1:
>>> - s/g_fmt function simplified
>>> - default format for queues added
>>> - dumb vidioc functions added to be in compliance with standard api:
>>> jpu_s_priority, jpu_g_priority
>> Oops, that's a bug elsewhere. Don't add these empty prio ops, this needs to be
>> solved in the v4l2 core.
>> I'll post a patch for this.
> After some thought I've decided to allow prio handling for m2m devices. It is
> actually useful if some application wants exclusive access to the m2m hardware.
> So I will change v4l2-compliance instead.
I take it we don't need to change the driver? Asking because the driver
seems stuck for nearly a months now.
I'm myself still seeing a place for improvement (register macro naming of
the top of my head). Perhaps it's time to take this driver into my own hands...
> Regards,
> Hans
WBR, Sergei
^ permalink raw reply [flat|nested] 78+ messages in thread
* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-25 12:49 ` Hans Verkuil
@ 2014-09-21 17:56 ` Sergei Shtylyov
-1 siblings, 0 replies; 78+ messages in thread
From: Sergei Shtylyov @ 2014-09-21 17:56 UTC (permalink / raw)
To: Hans Verkuil, Mikhail Ulyanov, horms, magnus.damm, m.chehab,
robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
Hello.
On 08/25/2014 04:49 PM, Hans Verkuil wrote:
>>> This patch contains driver for Renesas R-Car JPEG codec.
>>> Cnanges since v1:
>>> - s/g_fmt function simplified
>>> - default format for queues added
>>> - dumb vidioc functions added to be in compliance with standard api:
>>> jpu_s_priority, jpu_g_priority
>> Oops, that's a bug elsewhere. Don't add these empty prio ops, this needs to be
>> solved in the v4l2 core.
>> I'll post a patch for this.
> After some thought I've decided to allow prio handling for m2m devices. It is
> actually useful if some application wants exclusive access to the m2m hardware.
> So I will change v4l2-compliance instead.
I take it we don't need to change the driver? Asking because the driver
seems stuck for nearly a month now.
I'm myself still seeing a place for improvement (register macro naming of
the top of my head). Perhaps it's time to take this driver into my own hands...
> Regards,
> Hans
WBR, Sergei
^ permalink raw reply [flat|nested] 78+ messages in thread* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-09-21 17:56 ` Sergei Shtylyov
0 siblings, 0 replies; 78+ messages in thread
From: Sergei Shtylyov @ 2014-09-21 17:56 UTC (permalink / raw)
To: Hans Verkuil, Mikhail Ulyanov, horms, magnus.damm, m.chehab,
robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
Hello.
On 08/25/2014 04:49 PM, Hans Verkuil wrote:
>>> This patch contains driver for Renesas R-Car JPEG codec.
>>> Cnanges since v1:
>>> - s/g_fmt function simplified
>>> - default format for queues added
>>> - dumb vidioc functions added to be in compliance with standard api:
>>> jpu_s_priority, jpu_g_priority
>> Oops, that's a bug elsewhere. Don't add these empty prio ops, this needs to be
>> solved in the v4l2 core.
>> I'll post a patch for this.
> After some thought I've decided to allow prio handling for m2m devices. It is
> actually useful if some application wants exclusive access to the m2m hardware.
> So I will change v4l2-compliance instead.
I take it we don't need to change the driver? Asking because the driver
seems stuck for nearly a month now.
I'm myself still seeing a place for improvement (register macro naming of
the top of my head). Perhaps it's time to take this driver into my own hands...
> Regards,
> Hans
WBR, Sergei
^ permalink raw reply [flat|nested] 78+ messages in thread
* RE: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-25 12:29 ` Mikhail Ulyanov
@ 2014-09-23 13:31 ` Kamil Debski
-1 siblings, 0 replies; 78+ messages in thread
From: Kamil Debski @ 2014-09-23 13:31 UTC (permalink / raw)
To: linux-sh
Hi Mikhail,
> From: linux-media-owner@vger.kernel.org [mailto:linux-media-
> owner@vger.kernel.org] On Behalf Of Mikhail Ulyanov
> Sent: Monday, August 25, 2014 2:30 PM
>
> This patch contains driver for Renesas R-Car JPEG codec.
>
> Cnanges since v1:
> - s/g_fmt function simplified
> - default format for queues added
> - dumb vidioc functions added to be in compliance with standard
> api:
> jpu_s_priority, jpu_g_priority
> - standard v4l2_ctrl_subscribe_event and v4l2_event_unsubscribe
> now in use by the same reason
The patch looks good to me. However, I would suggest using the BIT macro
and making some short functions inline.
> Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
> ---
> drivers/media/platform/Kconfig | 11 +
> drivers/media/platform/Makefile | 2 +
> drivers/media/platform/jpu.c | 1628
> ++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 1641 insertions(+)
> create mode 100644 drivers/media/platform/jpu.c
>
> diff --git a/drivers/media/platform/Kconfig
> b/drivers/media/platform/Kconfig index 6d86646..1b8c846 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
> To compile this driver as a module, choose M here: the module
> will be called vsp1.
>
> +config VIDEO_RENESAS_JPU
> + tristate "Renesas JPEG Processing Unit"
> + depends on VIDEO_DEV && VIDEO_V4L2
> + select VIDEOBUF2_DMA_CONTIG
> + select V4L2_MEM2MEM_DEV
> + ---help---
> + This is a V4L2 driver for the Renesas JPEG Processing Unit.
> +
> + To compile this driver as a module, choose M here: the module
> + will be called jpu.
> +
> config VIDEO_TI_VPE
> tristate "TI VPE (Video Processing Engine) driver"
> depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX diff --git
> a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
> index e5269da..e438534 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) += soc_camera/
>
> obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
>
> +obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
> +
> obj-y += davinci/
>
> obj-$(CONFIG_ARCH_OMAP) += omap/
> diff --git a/drivers/media/platform/jpu.c
> b/drivers/media/platform/jpu.c new file mode 100644 index
> 0000000..da70491
> --- /dev/null
> +++ b/drivers/media/platform/jpu.c
> @@ -0,0 +1,1628 @@
> +/*
> + * Author: Mikhail Ulyanov <source@cogentembedded.com>
> + * Copyright (C) 2014 Cogent Embedded, Inc.
> + * Copyright (C) 2014 Renesas Electronics Corporation
> + *
> + * This is based on the drivers/media/platform/s5p-jpu driver by
> + * Andrzej Pietrasiewicz and Jacek Anaszewski.
> + *
> + * This program is free software; you can redistribute it and/or
> modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/err.h>
> +#include <linux/gfp.h>
> +#include <linux/interrupt.h>
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <linux/spinlock.h>
> +#include <linux/string.h>
> +#include <linux/videodev2.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fh.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/videobuf2-core.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +
> +#define JPU_M2M_NAME "jpu"
> +
> +#define JPU_WIDTH_MIN 16
> +#define JPU_HEIGHT_MIN 16
> +#define JPU_WIDTH_MAX 4096
> +#define JPU_HEIGHT_MAX 4096
> +#define JPU_DEFAULT_WIDTH 640
> +#define JPU_DEFAULT_HEIGHT 480
> +
> +#define JPU_ENCODE 0
> +#define JPU_DECODE 1
> +
> +/* Flags that indicate a format can be used for capture/output */
> +#define JPU_FMT_TYPE_OUTPUT 0
> +#define JPU_FMT_TYPE_CAPTURE 1
> +#define JPU_ENC_CAPTURE (1 << 0)
> +#define JPU_ENC_OUTPUT (1 << 1)
> +#define JPU_DEC_CAPTURE (1 << 2)
> +#define JPU_DEC_OUTPUT (1 << 3)
The BIT macro could be used here.
> +
> +/*
> + * JPEG registers and bits
> + */
> +
> +/* JPEG code mode register */
> +#define JCMOD 0x00
> +#define JCMOD_SOI_DISABLE (1 << 8)
> +#define JCMOD_SOI_ENABLE (0 << 8)
> +#define JCMOD_PCTR (1 << 7)
> +#define JCMOD_MSKIP_DISABLE (0 << 5)
> +#define JCMOD_MSKIP_ENABLE (1 << 5)
> +#define JCMOD_DSP_ENC (0 << 3)
> +#define JCMOD_DSP_DEC (1 << 3)
> +#define JCMOD_REDU (7 << 0)
> +#define JCMOD_REDU_422 (1 << 0)
> +#define JCMOD_REDU_420 (2 << 0)
> +
> +/* JPEG code command register */
> +#define JCCMD 0x04
> +#define JCCMD_SRST (1 << 12)
> +#define JCCMD_BRST (1 << 7)
> +#define JCCMD_JEND (1 << 2)
> +#define JCCMD_JSRT (1 << 0)
> +
> +/* JPEG code quantanization table number register */
> +#define JCQTN 0x0C
> +#define JCQTN_SHIFT(t) (((t) - 1) << 1)
> +
> +/* JPEG code Huffman table number register */
> +#define JCHTN 0x10
> +#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
> +#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
> +
[snip]
> > +==> + * video ioctl operations
> + *
> +===================================
> > +==> + */
> +static void put_byte(unsigned long *p, u8 v) {
> + u8 *addr = (u8 *)*p;
> +
> + *addr = v;
> + (*p)++;
> +}
> +
> +static void put_short_be(unsigned long *p, u16 v) {
> + u16 *addr = (u16 *)*p;
> +
> + *addr = cpu_to_be16(v);
> + *p += 2;
> +}
> +
> +static void put_word_be(unsigned long *p, u32 v) {
> + u32 *addr = (u32 *)*p;
> +
> + *addr = cpu_to_be32(v);
> + *p += 4;
> +}
The 3 above function could be inline.
> +
> +static void put_blob_byte(unsigned long *p, const unsigned char *blob,
> + unsigned int len)
> +{
> + int i;
> +
> + for (i = 0; i < len; i++)
> + put_byte(p, blob[i]);
> +}
I think this function could also be inline.
> +
> +static void put_qtbl(unsigned long *p, unsigned char id,
> + const unsigned int *qtbl)
> +{
> + int i;
> +
> + put_byte(p, id);
> + for (i = 0; i < ARRAY_SIZE(zigzag); i++)
> + put_byte(p, *((u8 *)qtbl + zigzag[i])); }
> +
> +static void put_htbl(unsigned long *p, unsigned char tc,
> + const unsigned int *htbl, unsigned int len) {
> + int i;
> +
> + put_byte(p, tc);
> + for (i = 0; i < len; i++)
> + put_word_be(p, htbl[i]);
> +}
> +
[snip]
Best wishes,
--
Kamil Debski
Samsung R&D Institute Poland
^ permalink raw reply [flat|nested] 78+ messages in thread* RE: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-09-23 13:31 ` Kamil Debski
0 siblings, 0 replies; 78+ messages in thread
From: Kamil Debski @ 2014-09-23 13:31 UTC (permalink / raw)
To: 'Mikhail Ulyanov',
horms, magnus.damm, m.chehab, robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
Hi Mikhail,
> From: linux-media-owner@vger.kernel.org [mailto:linux-media-
> owner@vger.kernel.org] On Behalf Of Mikhail Ulyanov
> Sent: Monday, August 25, 2014 2:30 PM
>
> This patch contains driver for Renesas R-Car JPEG codec.
>
> Cnanges since v1:
> - s/g_fmt function simplified
> - default format for queues added
> - dumb vidioc functions added to be in compliance with standard
> api:
> jpu_s_priority, jpu_g_priority
> - standard v4l2_ctrl_subscribe_event and v4l2_event_unsubscribe
> now in use by the same reason
The patch looks good to me. However, I would suggest using the BIT macro
and making some short functions inline.
> Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
> ---
> drivers/media/platform/Kconfig | 11 +
> drivers/media/platform/Makefile | 2 +
> drivers/media/platform/jpu.c | 1628
> ++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 1641 insertions(+)
> create mode 100644 drivers/media/platform/jpu.c
>
> diff --git a/drivers/media/platform/Kconfig
> b/drivers/media/platform/Kconfig index 6d86646..1b8c846 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
> To compile this driver as a module, choose M here: the module
> will be called vsp1.
>
> +config VIDEO_RENESAS_JPU
> + tristate "Renesas JPEG Processing Unit"
> + depends on VIDEO_DEV && VIDEO_V4L2
> + select VIDEOBUF2_DMA_CONTIG
> + select V4L2_MEM2MEM_DEV
> + ---help---
> + This is a V4L2 driver for the Renesas JPEG Processing Unit.
> +
> + To compile this driver as a module, choose M here: the module
> + will be called jpu.
> +
> config VIDEO_TI_VPE
> tristate "TI VPE (Video Processing Engine) driver"
> depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX diff --git
> a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
> index e5269da..e438534 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) += soc_camera/
>
> obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
>
> +obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
> +
> obj-y += davinci/
>
> obj-$(CONFIG_ARCH_OMAP) += omap/
> diff --git a/drivers/media/platform/jpu.c
> b/drivers/media/platform/jpu.c new file mode 100644 index
> 0000000..da70491
> --- /dev/null
> +++ b/drivers/media/platform/jpu.c
> @@ -0,0 +1,1628 @@
> +/*
> + * Author: Mikhail Ulyanov <source@cogentembedded.com>
> + * Copyright (C) 2014 Cogent Embedded, Inc.
> + * Copyright (C) 2014 Renesas Electronics Corporation
> + *
> + * This is based on the drivers/media/platform/s5p-jpu driver by
> + * Andrzej Pietrasiewicz and Jacek Anaszewski.
> + *
> + * This program is free software; you can redistribute it and/or
> modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/err.h>
> +#include <linux/gfp.h>
> +#include <linux/interrupt.h>
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <linux/spinlock.h>
> +#include <linux/string.h>
> +#include <linux/videodev2.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fh.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/videobuf2-core.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +
> +#define JPU_M2M_NAME "jpu"
> +
> +#define JPU_WIDTH_MIN 16
> +#define JPU_HEIGHT_MIN 16
> +#define JPU_WIDTH_MAX 4096
> +#define JPU_HEIGHT_MAX 4096
> +#define JPU_DEFAULT_WIDTH 640
> +#define JPU_DEFAULT_HEIGHT 480
> +
> +#define JPU_ENCODE 0
> +#define JPU_DECODE 1
> +
> +/* Flags that indicate a format can be used for capture/output */
> +#define JPU_FMT_TYPE_OUTPUT 0
> +#define JPU_FMT_TYPE_CAPTURE 1
> +#define JPU_ENC_CAPTURE (1 << 0)
> +#define JPU_ENC_OUTPUT (1 << 1)
> +#define JPU_DEC_CAPTURE (1 << 2)
> +#define JPU_DEC_OUTPUT (1 << 3)
The BIT macro could be used here.
> +
> +/*
> + * JPEG registers and bits
> + */
> +
> +/* JPEG code mode register */
> +#define JCMOD 0x00
> +#define JCMOD_SOI_DISABLE (1 << 8)
> +#define JCMOD_SOI_ENABLE (0 << 8)
> +#define JCMOD_PCTR (1 << 7)
> +#define JCMOD_MSKIP_DISABLE (0 << 5)
> +#define JCMOD_MSKIP_ENABLE (1 << 5)
> +#define JCMOD_DSP_ENC (0 << 3)
> +#define JCMOD_DSP_DEC (1 << 3)
> +#define JCMOD_REDU (7 << 0)
> +#define JCMOD_REDU_422 (1 << 0)
> +#define JCMOD_REDU_420 (2 << 0)
> +
> +/* JPEG code command register */
> +#define JCCMD 0x04
> +#define JCCMD_SRST (1 << 12)
> +#define JCCMD_BRST (1 << 7)
> +#define JCCMD_JEND (1 << 2)
> +#define JCCMD_JSRT (1 << 0)
> +
> +/* JPEG code quantanization table number register */
> +#define JCQTN 0x0C
> +#define JCQTN_SHIFT(t) (((t) - 1) << 1)
> +
> +/* JPEG code Huffman table number register */
> +#define JCHTN 0x10
> +#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
> +#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
> +
[snip]
> =
> +=====
> + * video ioctl operations
> + *
> +======================================================================
> =
> +=====
> + */
> +static void put_byte(unsigned long *p, u8 v) {
> + u8 *addr = (u8 *)*p;
> +
> + *addr = v;
> + (*p)++;
> +}
> +
> +static void put_short_be(unsigned long *p, u16 v) {
> + u16 *addr = (u16 *)*p;
> +
> + *addr = cpu_to_be16(v);
> + *p += 2;
> +}
> +
> +static void put_word_be(unsigned long *p, u32 v) {
> + u32 *addr = (u32 *)*p;
> +
> + *addr = cpu_to_be32(v);
> + *p += 4;
> +}
The 3 above function could be inline.
> +
> +static void put_blob_byte(unsigned long *p, const unsigned char *blob,
> + unsigned int len)
> +{
> + int i;
> +
> + for (i = 0; i < len; i++)
> + put_byte(p, blob[i]);
> +}
I think this function could also be inline.
> +
> +static void put_qtbl(unsigned long *p, unsigned char id,
> + const unsigned int *qtbl)
> +{
> + int i;
> +
> + put_byte(p, id);
> + for (i = 0; i < ARRAY_SIZE(zigzag); i++)
> + put_byte(p, *((u8 *)qtbl + zigzag[i])); }
> +
> +static void put_htbl(unsigned long *p, unsigned char tc,
> + const unsigned int *htbl, unsigned int len) {
> + int i;
> +
> + put_byte(p, tc);
> + for (i = 0; i < len; i++)
> + put_word_be(p, htbl[i]);
> +}
> +
[snip]
Best wishes,
--
Kamil Debski
Samsung R&D Institute Poland
^ permalink raw reply [flat|nested] 78+ messages in thread* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-09-23 13:31 ` Kamil Debski
@ 2014-09-25 12:49 ` Sergei Shtylyov
-1 siblings, 0 replies; 78+ messages in thread
From: Sergei Shtylyov @ 2014-09-25 12:49 UTC (permalink / raw)
To: Kamil Debski, 'Mikhail Ulyanov',
horms, magnus.damm, m.chehab, robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
Hello.
On 9/23/2014 5:31 PM, Kamil Debski wrote:
>> From: linux-media-owner@vger.kernel.org [mailto:linux-media-
>> owner@vger.kernel.org] On Behalf Of Mikhail Ulyanov
>> Sent: Monday, August 25, 2014 2:30 PM
>> This patch contains driver for Renesas R-Car JPEG codec.
>> Cnanges since v1:
>> - s/g_fmt function simplified
>> - default format for queues added
>> - dumb vidioc functions added to be in compliance with standard
>> api:
>> jpu_s_priority, jpu_g_priority
>> - standard v4l2_ctrl_subscribe_event and v4l2_event_unsubscribe
>> now in use by the same reason
> The patch looks good to me. However, I would suggest using the BIT macro
I'd prefer not using it since the driver #define's not only bits but also bit
values and multi-bit fields. Using BIT() would look inconsistent in this
situation.
> and making some short functions inline.
I think the current trend is to use *inline* only in the headers, and let
gcc figure it out itself in the .c files.
>> Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
[...]
>> diff --git a/drivers/media/platform/jpu.c
>> b/drivers/media/platform/jpu.c new file mode 100644 index
>> 0000000..da70491
>> --- /dev/null
>> +++ b/drivers/media/platform/jpu.c
>> @@ -0,0 +1,1628 @@
[...]
> Best wishes,
WBR, Sergei
^ permalink raw reply [flat|nested] 78+ messages in thread* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-09-25 12:49 ` Sergei Shtylyov
0 siblings, 0 replies; 78+ messages in thread
From: Sergei Shtylyov @ 2014-09-25 12:49 UTC (permalink / raw)
To: Kamil Debski, 'Mikhail Ulyanov',
horms, magnus.damm, m.chehab, robh+dt, grant.likely
Cc: laurent.pinchart, hans.verkuil, linux-sh, linux-media, devicetree
Hello.
On 9/23/2014 5:31 PM, Kamil Debski wrote:
>> From: linux-media-owner@vger.kernel.org [mailto:linux-media-
>> owner@vger.kernel.org] On Behalf Of Mikhail Ulyanov
>> Sent: Monday, August 25, 2014 2:30 PM
>> This patch contains driver for Renesas R-Car JPEG codec.
>> Cnanges since v1:
>> - s/g_fmt function simplified
>> - default format for queues added
>> - dumb vidioc functions added to be in compliance with standard
>> api:
>> jpu_s_priority, jpu_g_priority
>> - standard v4l2_ctrl_subscribe_event and v4l2_event_unsubscribe
>> now in use by the same reason
> The patch looks good to me. However, I would suggest using the BIT macro
I'd prefer not using it since the driver #define's not only bits but also bit
values and multi-bit fields. Using BIT() would look inconsistent in this
situation.
> and making some short functions inline.
I think the current trend is to use *inline* only in the headers, and let
gcc figure it out itself in the .c files.
>> Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
[...]
>> diff --git a/drivers/media/platform/jpu.c
>> b/drivers/media/platform/jpu.c new file mode 100644 index
>> 0000000..da70491
>> --- /dev/null
>> +++ b/drivers/media/platform/jpu.c
>> @@ -0,0 +1,1628 @@
[...]
> Best wishes,
WBR, Sergei
^ permalink raw reply [flat|nested] 78+ messages in thread
* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-25 12:29 ` Mikhail Ulyanov
@ 2014-09-26 14:01 ` Laurent Pinchart
-1 siblings, 0 replies; 78+ messages in thread
From: Laurent Pinchart @ 2014-09-26 14:01 UTC (permalink / raw)
To: Mikhail Ulyanov
Cc: horms, magnus.damm, m.chehab, robh+dt, grant.likely,
hans.verkuil, linux-sh, linux-media, devicetree
Hi Mikhail,
Thank you for the patch.
On Monday 25 August 2014 16:29:47 Mikhail Ulyanov wrote:
> This patch contains driver for Renesas R-Car JPEG codec.
>
> Cnanges since v1:
> - s/g_fmt function simplified
> - default format for queues added
> - dumb vidioc functions added to be in compliance with standard api:
> jpu_s_priority, jpu_g_priority
> - standard v4l2_ctrl_subscribe_event and v4l2_event_unsubscribe
> now in use by the same reason
>
> Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
> ---
> drivers/media/platform/Kconfig | 11 +
> drivers/media/platform/Makefile | 2 +
> drivers/media/platform/jpu.c | 1628 ++++++++++++++++++++++++++++++++++++
> 3 files changed, 1641 insertions(+)
> create mode 100644 drivers/media/platform/jpu.c
>
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index 6d86646..1b8c846 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
> To compile this driver as a module, choose M here: the module
> will be called vsp1.
>
> +config VIDEO_RENESAS_JPU
> + tristate "Renesas JPEG Processing Unit"
> + depends on VIDEO_DEV && VIDEO_V4L2
> + select VIDEOBUF2_DMA_CONTIG
> + select V4L2_MEM2MEM_DEV
> + ---help---
> + This is a V4L2 driver for the Renesas JPEG Processing Unit.
> +
> + To compile this driver as a module, choose M here: the module
> + will be called jpu.
> +
You could move this above VIDEO_RENESAS_VSP1 to keep the file somehow sorted.
Same comment for the Makefile.
> config VIDEO_TI_VPE
> tristate "TI VPE (Video Processing Engine) driver"
> depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX
> diff --git a/drivers/media/platform/Makefile
> b/drivers/media/platform/Makefile index e5269da..e438534 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) += soc_camera/
>
> obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
>
> +obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
> +
> obj-y += davinci/
>
> obj-$(CONFIG_ARCH_OMAP) += omap/
> diff --git a/drivers/media/platform/jpu.c b/drivers/media/platform/jpu.c
> new file mode 100644
> index 0000000..da70491
> --- /dev/null
> +++ b/drivers/media/platform/jpu.c
> @@ -0,0 +1,1628 @@
> +/*
> + * Author: Mikhail Ulyanov <source@cogentembedded.com>
> + * Copyright (C) 2014 Cogent Embedded, Inc.
> + * Copyright (C) 2014 Renesas Electronics Corporation
> + *
> + * This is based on the drivers/media/platform/s5p-jpu driver by
> + * Andrzej Pietrasiewicz and Jacek Anaszewski.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/err.h>
> +#include <linux/gfp.h>
Do you really gfp.h ? slab.h should be enough.
> +#include <linux/interrupt.h>
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <linux/spinlock.h>
> +#include <linux/string.h>
> +#include <linux/videodev2.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fh.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/videobuf2-core.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +
> +#define JPU_M2M_NAME "jpu"
> +
> +#define JPU_WIDTH_MIN 16
> +#define JPU_HEIGHT_MIN 16
> +#define JPU_WIDTH_MAX 4096
> +#define JPU_HEIGHT_MAX 4096
> +#define JPU_DEFAULT_WIDTH 640
> +#define JPU_DEFAULT_HEIGHT 480
> +
> +#define JPU_ENCODE 0
> +#define JPU_DECODE 1
How about making this an enum, or turning the ctx->mode field into a boolean
compress (or encoder, decode, decompress...) field ?
> +/* Flags that indicate a format can be used for capture/output */
> +#define JPU_FMT_TYPE_OUTPUT 0
> +#define JPU_FMT_TYPE_CAPTURE 1
> +#define JPU_ENC_CAPTURE (1 << 0)
> +#define JPU_ENC_OUTPUT (1 << 1)
> +#define JPU_DEC_CAPTURE (1 << 2)
> +#define JPU_DEC_OUTPUT (1 << 3)
> +
> +/*
> + * JPEG registers and bits
> + */
> +
> +/* JPEG code mode register */
> +#define JCMOD 0x00
> +#define JCMOD_SOI_DISABLE (1 << 8)
> +#define JCMOD_SOI_ENABLE (0 << 8)
> +#define JCMOD_PCTR (1 << 7)
> +#define JCMOD_MSKIP_DISABLE (0 << 5)
> +#define JCMOD_MSKIP_ENABLE (1 << 5)
> +#define JCMOD_DSP_ENC (0 << 3)
> +#define JCMOD_DSP_DEC (1 << 3)
> +#define JCMOD_REDU (7 << 0)
> +#define JCMOD_REDU_422 (1 << 0)
> +#define JCMOD_REDU_420 (2 << 0)
> +
> +/* JPEG code command register */
> +#define JCCMD 0x04
> +#define JCCMD_SRST (1 << 12)
> +#define JCCMD_BRST (1 << 7)
> +#define JCCMD_JEND (1 << 2)
> +#define JCCMD_JSRT (1 << 0)
> +
> +/* JPEG code quantanization table number register */
> +#define JCQTN 0x0C
> +#define JCQTN_SHIFT(t) (((t) - 1) << 1)
> +
> +/* JPEG code Huffman table number register */
> +#define JCHTN 0x10
> +#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
> +#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
> +
> +#define JCDRIU 0x14 /* JPEG code DRI upper register */
> +#define JCDRIL 0x18 /* JPEG code DRI lower register */
> +#define JCVSZU 0x1C /* JPEG code vertical size upper register */
The majority of v4l drivers tend to favour lowercase hex values, but as it's a
small majority, I won't push for that :-)
> +#define JCVSZD 0x20 /* JPEG code vertical size lower register */
> +#define JCHSZU 0x24 /* JPEG code horizontal size upper register */
> +#define JCHSZD 0x28 /* JPEG code horizontal size lower register */
> +#define JCSZ_MASK 0xff /* JPEG code h/v size register contains only 1
> byte*/ +
> +#define JCDTCU 0x2C /* JPEG code data count upper register */
> +#define JCDTCM 0x30 /* JPEG code data count middle register */
> +#define JCDTCD 0x34 /* JPEG code data count lower register */
> +
> +/* JPEG interrupt enable register */
> +#define JINTE 0x38
> +
> +/* JPEG interrupt status register */
> +#define JINTS 0x3C
> +#define JINTS_MASK 0x7c68
> +
> +#define INT(n) (1 << n)
> +
> +#define JCDERR 0x40 /* JPEG code decode error register */
> +
> +/* JPEG interface encoding */
> +#define JIFECNT 0x70
> +#define JIFECNT_INFT_422 0
> +#define JIFECNT_INFT_420 1
> +#define JIFECNT_SWAP_WB (0x3 << 4)
> +
> +/* JPEG interface encode source Y address register 1 */
> +#define JIFESYA1 0x74
> +/* JPEG interface encode source C address register 1 */
> +#define JIFESCA1 0x78
> +/* JPEG interface encode source Y address register 2 */
> +#define JIFESYA2 0x7C
> +/* JPEG interface encode source C address register 2 */
> +#define JIFESCA2 0x80
> +/* JPEG interface encode source memory width register */
> +#define JIFESMW 0x84
> +/* JPEG interface encode source vertical size register */
> +#define JIFESVSZ 0x88
> +/* JPEG interface encode source horizontal size register */
> +#define JIFESHSZ 0x8C
> +/* JPEG interface encode destination address register 1 */
> +#define JIFEDA1 0x90
> +/* JPEG interface encode destination address register 2 */
> +#define JIFEDA2 0x94
> +
> +/* JPEG decoding control register */
> +#define JIFDCNT 0xA0
> +#define JIFDCNT_SWAP (3 << 1)
> +#define JIFDCNT_SWAP_NO (0 << 1)
> +#define JIFDCNT_SWAP_BYTE (1 << 1)
> +#define JIFDCNT_SWAP_WORD (2 << 1)
> +#define JIFDCNT_SWAP_WB (3 << 1)
> +
> +/* JPEG decode source address register 1 */
> +#define JIFDSA1 0xA4
> +/* JPEG decode source address register 2 */
> +#define JIFDSA2 0xA8
> +/* JPEG decode data reload size register */
> +#define JIFDDRSZ 0xAC
> +/* JPEG decode data destination memory width register */
> +#define JIFDDMW 0xB0
> +/* JPEG decode data destination vertical size register */
> +#define JIFDDVSZ 0xB4
> +/* JPEG decode data destination horizontal size register */
> +#define JIFDDHSZ 0xB8
> +/* JPEG decode data destination Y address register 1 */
> +#define JIFDDYA1 0xBC
> +/* JPEG decode data destination C address register 1 */
> +#define JIFDDCA1 0xC0
> +/* JPEG decode data destination Y address register 2 */
> +#define JIFDDYA2 0xC4
> +/* JPEG decode data destination C address register 2 */
> +#define JIFDDCA2 0xC8
> +
> +/* JPEG code quantization tables registers */
> +#define JCQTBL(n) (0x10000 + (n) * 0x40)
> +
> +/* JPEG code Huffman table DC registers */
> +#define JCHTBD(n) (0x10100 + (n) * 0x100)
> +
> +/* JPEG code Huffman table AC registers */
> +#define JCHTBA(n) (0x10120 + (n) * 0x100)
> +
> +#define JPU_JPEG_HDR_SIZE 0x250
> +
> +enum jpu_status {
> + JPU_OK,
> + JPU_BUSY,
> + JPU_ERR
> +};
> +
> +/**
> + * struct jpu - JPEG IP abstraction
> + * @mutex: the mutex protecting this structure
> + * @slock: spinlock protecting the device contexts
> + * @v4l2_dev: v4l2 device for mem2mem mode
> + * @vfd_encoder: video device node for encoder mem2mem mode
> + * @vfd_decoder: video device node for decoder mem2mem mode
> + * @m2m_dev: v4l2 mem2mem device data
> + * @regs: JPEG IP registers mapping
> + * @irq: JPEG IP irq
> + * @clk: JPEG IP clock
> + * @dev: JPEG IP struct device
> + * @alloc_ctx: videobuf2 memory allocator's context
> + * @bounds: platform specific IP limitations
> + * @wq: waitqueue for header parsing handling
> + * @statatus: current driver state variable
> + * @ref_counter: reference counter
> + */
> +struct jpu {
> + struct mutex mutex;
> + spinlock_t slock;
> +
> + struct v4l2_device v4l2_dev;
> + struct video_device *vfd_encoder;
> + struct video_device *vfd_decoder;
> + struct v4l2_m2m_dev *m2m_dev;
> +
> + void __iomem *regs;
> + unsigned int irq;
> + struct clk *clk;
> + struct device *dev;
> + void *alloc_ctx;
> + struct jpu_bounds *bounds;
> + wait_queue_head_t wq;
> + enum jpu_status status;
> + int ref_count;
> +};
> +
> +/**
> + * struct jpu_fmt - driver's internal format data
> + * @name: format descritpion
> + * @fourcc: the fourcc code, 0 if not applicable
> + * @colorspace: the colorspace specificator
> + * @depth: number of bits per pixel
> + * @h_align: horizontal alignment order (align to 2^h_align)
> + * @v_align: vertical alignment order (align to 2^v_align)
> + * @types: types of queue this format is applicable to
> + */
> +struct jpu_fmt {
> + char *name;
> + u32 fourcc;
> + u32 colorspace;
> + int depth;
> + int h_align;
> + int v_align;
> + u32 types;
> +};
> +
> +/**
> + * jpu_q_data - parameters of one queue
> + * @fmt: driver-specific format of this queue
> + * @default_fmt: default format of this queue
> + * @w: image width
> + * @h: image height
> + * @size: image buffer size in bytes
> + */
> +struct jpu_q_data {
> + struct jpu_fmt *fmt;
> + struct jpu_fmt *default_fmt;
> + u32 w;
> + u32 h;
> + u32 size;
> +};
> +
> +/**
> + * jpu_ctx - the device context data
> + * @jpu: JPEG IP device for this context
> + * @mode: compression (encode) operation or decompression (decode)
> + * @compr_quality: destination image quality in compression (encode) mode
> + * @out_q: source (output) queue information
> + * @fh: file handler;
> + * @hdr_parsed: set if header has been parsed during decompression
> + * @ctrl_handler: controls handler
> + */
> +struct jpu_ctx {
> + struct jpu *jpu;
> + unsigned int mode;
> + unsigned short compr_quality;
> + struct jpu_q_data out_q;
> + struct jpu_q_data cap_q;
> + struct v4l2_fh fh;
> + bool hdr_parsed;
> + struct v4l2_ctrl_handler ctrl_handler;
> +};
> +
> +static struct jpu_fmt jpu_formats[] = {
> + {
> + .name = "JPEG JFIF",
> + .fourcc = V4L2_PIX_FMT_JPEG,
> + .colorspace = V4L2_COLORSPACE_JPEG,
> + .types = JPU_ENC_CAPTURE | JPU_DEC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:2 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + .depth = 16,
> + .h_align = 3,
> + .v_align = 3,
> + .types = JPU_ENC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:0 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + .depth = 12,
> + .h_align = 3,
> + .v_align = 3,
> + .types = JPU_ENC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:2 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + .depth = 16,
> + .h_align = 2,
> + .v_align = 2,
> + .types = JPU_DEC_CAPTURE,
> + },
> + {
> + .name = "YUV 4:2:0 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + .depth = 12,
> + .h_align = 2,
> + .v_align = 2,
> + .types = JPU_DEC_CAPTURE,
> + },
> +};
> +
> +static const u8 zigzag[] = {
> + 0x03, 0x02, 0x0b, 0x13, 0x0a, 0x01, 0x00, 0x09,
> + 0x12, 0x1b, 0x23, 0x1a, 0x11, 0x08, 0x07, 0x06,
> + 0x0f, 0x10, 0x19, 0x22, 0x2b, 0x33, 0x2a, 0x21,
> + 0x18, 0x17, 0x0e, 0x05, 0x04, 0x0d, 0x16, 0x1f,
> + 0x20, 0x29, 0x32, 0x3b, 0x3a, 0x31, 0x28, 0x27,
> + 0x1e, 0x15, 0x0e, 0x14, 0x10, 0x26, 0x2f, 0x30,
> + 0x39, 0x38, 0x37, 0x2e, 0x25, 0x1c, 0x24, 0x2b,
> + 0x36, 0x3f, 0x3e, 0x35, 0x2c, 0x34, 0x3d, 0x3c
> +};
> +
> +static unsigned char hdr_blob0[] = {
> + 0xff, 0xd8, 0xff, 0xfe, 0x00, 0x0e, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x84
> +};
> +
> +static unsigned char hdr_blob1[] = {
> + 0xff, 0xc0, 0x00, 0x11, 0x08
> +};
> +
> +static unsigned char hdr_blob2[] = {
> + 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff,
> + 0xc4, 0x01, 0xa2
> +};
> +
> +static const unsigned int qtbl_lum[2][16] = {
> + {
> + 0x14401927, 0x322e3e44, 0x10121726, 0x26354144,
> + 0x19171f26, 0x35414444, 0x27262635, 0x41444444,
> + 0x32263541, 0x44444444, 0x2e354144, 0x44444444,
> + 0x3e414444, 0x44444444, 0x44444444, 0x44444444
> + },
> + {
> + 0x08060608, 0x0c0e1011, 0x06060608, 0x0a0d0c0f,
> + 0x06060708, 0x0d0e1218, 0x0808080e, 0x0d131823,
> + 0x0c0a0d0d, 0x141a2227, 0x0e0d0e13, 0x1a222727,
> + 0x100c1318, 0x22272727, 0x110f1823, 0x27272727
> + }
> +};
> +
> +static const unsigned int qtbl_chr[2][16] = {
> + {
> + 0x15192026, 0x36444444, 0x191c1826, 0x36444444,
> + 0x2018202b, 0x42444444, 0x26262b35, 0x44444444,
> + 0x36424444, 0x44444444, 0x44444444, 0x44444444,
> + 0x44444444, 0x44444444, 0x44444444, 0x44444444
> + },
> + {
> + 0x0908090b, 0x0e111318, 0x080a090b, 0x0e0d1116,
> + 0x09090d0e, 0x0d0f171a, 0x0b0b0e0e, 0x0f141a21,
> + 0x0e0e0d0f, 0x14182127, 0x110d0f14, 0x18202727,
> + 0x1311171a, 0x21272727, 0x18161a21, 0x27272727
> + }
> +};
> +
> +static const unsigned int hdctbl_lum[7] = {
> + 0x00010501, 0x01010101, 0x01000000, 0x00000000,
> + 0x00010203, 0x04050607, 0x08090a0b
> +};
> +
> +static const unsigned int hdctbl_chr[7] = {
> + 0x00030101, 0x01010101, 0x01010100, 0x00000000,
> + 0x00010203, 0x04050607, 0x08090a0b
> +};
> +
> +static const unsigned int hactbl_lum[45] = {
> + 0x00020103, 0x03020403, 0x05050404, 0x0000017d,
> + 0x01020300, 0x04110512, 0x21314106, 0x13516107,
> + 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
> + 0x24336272, 0x82090a16, 0x1718191a, 0x25262728,
> + 0x292a3435, 0x36373839, 0x3a434445, 0x46474849,
> + 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
> + 0x6a737475, 0x76777879, 0x7a838485, 0x86878889,
> + 0x8a929394, 0x95969798, 0x999aa2a3, 0xa4a5a6a7,
> + 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
> + 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2,
> + 0xe3e4e5e6, 0xe7e8e9ea, 0xf1f2f3f4, 0xf5f6f7f8,
> + 0xf9fa0000
> +};
> +
> +static const unsigned int hactbl_chr[45] = {
> + 0x00020102, 0x04040304, 0x07050404, 0x00010277,
> + 0x00010203, 0x11040521, 0x31061241, 0x51076171,
> + 0x13223281, 0x08144291, 0xa1b1c109, 0x233352f0,
> + 0x156372d1, 0x0a162434, 0xe125f117, 0x18191a26,
> + 0x2728292a, 0x35363738, 0x393a4344, 0x45464748,
> + 0x494a5354, 0x55565758, 0x595a6364, 0x65666768,
> + 0x696a7374, 0x75767778, 0x797a8283, 0x84858687,
> + 0x88898a92, 0x93949596, 0x9798999a, 0xa2a3a4a5,
> + 0xa6a7a8a9, 0xaab2b3b4, 0xb5b6b7b8, 0xb9bac2c3,
> + 0xc4c5c6c7, 0xc8c9cad2, 0xd3d4d5d6, 0xd7d8d9da,
> + 0xe2e3e4e5, 0xe6e7e8e9, 0xeaf2f3f4, 0xf5f6f7f8,
> + 0xf9fa0000
> +};
> +
> +static struct jpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
> +{
> + return container_of(c->handler, struct jpu_ctx, ctrl_handler);
> +}
> +
> +static struct jpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
> +{
> + return container_of(fh, struct jpu_ctx, fh);
> +}
> +
> +static void jpu_set_tbl(void __iomem *regs, const unsigned int *tbl,
> + int len) {
> + unsigned int i;
> +
> + for (i = 0; i < len; i++)
> + iowrite32(tbl[i], regs + (i << 2));
> +}
> +
> +static void jpu_set_qtbl(void __iomem *regs, int quality)
> +{
> + jpu_set_tbl(regs + JCQTBL(0), qtbl_lum[quality],
> + ARRAY_SIZE(qtbl_lum[quality]));
> + jpu_set_tbl(regs + JCQTBL(1), qtbl_chr[quality],
> + ARRAY_SIZE(qtbl_chr[quality]));
> +}
> +
> +static void jpu_set_htbl(void __iomem *regs)
> +{
> + jpu_set_tbl(regs + JCHTBD(0), hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
> + jpu_set_tbl(regs + JCHTBD(1), hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
> + jpu_set_tbl(regs + JCHTBA(0), hactbl_lum, ARRAY_SIZE(hactbl_lum));
> + jpu_set_tbl(regs + JCHTBA(1), hactbl_chr, ARRAY_SIZE(hactbl_chr));
> +}
> +
> +static void jpu_int_clear(void __iomem *regs, unsigned int int_status)
> +{
> + iowrite32(~int_status & JINTS_MASK, regs + JINTS);
> +
> + if (int_status & (INT(6) | INT(5) | INT(3)))
> + iowrite32(JCCMD_JEND, regs + JCCMD);
> +}
> +
> +static void jpu_reset(void __iomem *regs)
> +{
> + iowrite32(JCCMD_SRST, regs + JCCMD);
> + while ((ioread32(regs + JCCMD) & JCCMD_SRST) != 0)
> + cpu_relax();
How about adding a timeout ?
> +}
> +
> +/*
> + *
> =====================================> = + * video ioctl operations
> + *
> =====================================> = + */
> +static void put_byte(unsigned long *p, u8 v)
> +{
> + u8 *addr = (u8 *)*p;
> +
> + *addr = v;
> + (*p)++;
> +}
> +
> +static void put_short_be(unsigned long *p, u16 v)
> +{
> + u16 *addr = (u16 *)*p;
> +
> + *addr = cpu_to_be16(v);
> + *p += 2;
> +}
> +
> +static void put_word_be(unsigned long *p, u32 v)
> +{
> + u32 *addr = (u32 *)*p;
> +
> + *addr = cpu_to_be32(v);
> + *p += 4;
> +}
> +
> +static void put_blob_byte(unsigned long *p, const unsigned char *blob,
> + unsigned int len)
> +{
> + int i;
len is an unsigned int, i should be as well. Same comment for the signed loop
indices in the rest of the driver.
> +
> + for (i = 0; i < len; i++)
> + put_byte(p, blob[i]);
Wouldn't a memcpy be more efficient ?
> +}
> +
> +static void put_qtbl(unsigned long *p, unsigned char id,
> + const unsigned int *qtbl)
> +{
> + int i;
> +
> + put_byte(p, id);
> + for (i = 0; i < ARRAY_SIZE(zigzag); i++)
> + put_byte(p, *((u8 *)qtbl + zigzag[i]));
> +}
> +
> +static void put_htbl(unsigned long *p, unsigned char tc,
> + const unsigned int *htbl, unsigned int len)
> +{
> + int i;
> +
> + put_byte(p, tc);
> + for (i = 0; i < len; i++)
> + put_word_be(p, htbl[i]);
> +}
> +
> +static void jpu_generate_hdr(struct jpu_q_data *q, int quality, void
> *buffer) +{
> + /* SOI(2) - DQT(134 / 2 tables) - SOF0(19) - DHT(420 / 2 tables) */
> + unsigned long p = (unsigned long)buffer;
> +
> + put_blob_byte(&p, hdr_blob0, ARRAY_SIZE(hdr_blob0));
> +
> + put_qtbl(&p, 0x00, qtbl_lum[quality]);
> + put_qtbl(&p, 0x01, qtbl_chr[quality]);
> +
> + put_blob_byte(&p, hdr_blob1, ARRAY_SIZE(hdr_blob1));
> +
> + put_short_be(&p, q->h);
> + put_short_be(&p, q->w);
> +
> + put_byte(&p, 0x03);
> + put_byte(&p, 0x01);
> +
> + if (q->fmt->fourcc = V4L2_PIX_FMT_NV16)
> + put_byte(&p, 0x21);
> + else
> + put_byte(&p, 0x22);
> +
> + put_blob_byte(&p, hdr_blob2, ARRAY_SIZE(hdr_blob2));
> +
> + put_htbl(&p, 0x00, hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
> + put_htbl(&p, 0x10, hactbl_lum, ARRAY_SIZE(hactbl_lum));
> + p -= 2;
> +
> + put_htbl(&p, 0x01, hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
> + put_htbl(&p, 0x11, hactbl_chr, ARRAY_SIZE(hactbl_chr));
Wouldn't it be more efficient to memcpy the whole header in one go and then
patch the width, height and subsampling ? You could get rid of the endianness
conversions that way.
> +}
> +
> +static int jpu_querycap(struct file *file, void *priv,
> + struct v4l2_capability *cap)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode = JPU_ENCODE) {
> + strlcpy(cap->driver, JPU_M2M_NAME " encoder",
> + sizeof(cap->driver));
> + strlcpy(cap->card, JPU_M2M_NAME " encoder",
> + sizeof(cap->card));
> + } else {
> + strlcpy(cap->driver, JPU_M2M_NAME " decoder",
> + sizeof(cap->driver));
> + strlcpy(cap->card, JPU_M2M_NAME " decoder",
> + sizeof(cap->card));
> + }
> + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
> + dev_name(ctx->jpu->dev));
> + cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M;
> + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
> + return 0;
> +}
> +
> +static struct jpu_fmt *jpu_find_format(unsigned int mode, u32 pixelformat,
> + unsigned int fmt_type)
> +{
> + unsigned int k, fmt_flag;
> +
> + if (mode = JPU_ENCODE)
> + fmt_flag = (fmt_type = JPU_FMT_TYPE_OUTPUT) ? JPU_ENC_OUTPUT :
> + JPU_ENC_CAPTURE;
> + else
> + fmt_flag = (fmt_type = JPU_FMT_TYPE_OUTPUT) ? JPU_DEC_OUTPUT :
> + JPU_DEC_CAPTURE;
> +
> + for (k = 0; k < ARRAY_SIZE(jpu_formats); k++) {
Anything wrong with i as a loop index ? :-)
> + struct jpu_fmt *fmt = &jpu_formats[k];
> +
> + if (fmt->fourcc = pixelformat && fmt->types & fmt_flag)
> + return fmt;
> + }
> +
> + return NULL;
> +}
> +
> +static int jpu_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
> +{
> + int i, num = 0;
> +
> + for (i = 0; i < ARRAY_SIZE(jpu_formats); ++i) {
> + if (jpu_formats[i].types & type) {
> + /* index-th format of type type found ? */
> + if (num = f->index)
> + break;
> + /*
> + * Correct type but haven't reached our index yet,
> + * just increment per-type index
> + */
> + ++num;
> + }
> + }
> +
> + /* Format not found */
> + if (i >= ARRAY_SIZE(jpu_formats))
> + return -EINVAL;
> +
> + strlcpy(f->description, jpu_formats[i].name, sizeof(f->description));
> + f->pixelformat = jpu_formats[i].fourcc;
> +
> + return 0;
> +}
> +
> +static int jpu_enum_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode = JPU_ENCODE)
> + return jpu_enum_fmt(f, JPU_ENC_CAPTURE);
> +
> + return jpu_enum_fmt(f, JPU_DEC_CAPTURE);
> +}
> +
> +static int jpu_enum_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode = JPU_ENCODE)
> + return jpu_enum_fmt(f, JPU_ENC_OUTPUT);
> +
> + return jpu_enum_fmt(f, JPU_DEC_OUTPUT);
> +}
> +
> +static struct jpu_q_data *jpu_get_q_data(struct jpu_ctx *ctx,
> + enum v4l2_buf_type type)
> +{
> + switch (type) {
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + return &ctx->out_q;
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + return &ctx->cap_q;
> + default:
> + return NULL;
Can the default case occur ?
> + }
> +}
> +
> +static int jpu_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
> +{
> + struct vb2_queue *vq;
> + struct jpu_q_data *q_data;
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (!vq)
> + return -EINVAL;
> +
> + if (f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE &&
> + ctx->mode = JPU_DECODE && !ctx->hdr_parsed)
> + return -EINVAL;
I wonder if -EINVAL is the proper error code to be returned here. We want to
express that the format isn't available yet. What do other m2m drivers return
in this case ?
> + q_data = jpu_get_q_data(ctx, f->type);
> + if (!q_data)
> + return -EINVAL;
> +
> + pix->width = q_data->w;
> + pix->height = q_data->h;
> + pix->field = V4L2_FIELD_NONE;
> + pix->pixelformat = q_data->fmt->fourcc;
> + pix->colorspace = q_data->fmt->colorspace;
> + pix->bytesperline = 0;
> + if (pix->pixelformat != V4L2_PIX_FMT_JPEG)
> + pix->bytesperline = q_data->w;
> + pix->sizeimage = q_data->size;
> +
> + return 0;
> +}
> +
> +
> +static void jpu_bound_align_image(u32 *w, unsigned int wmin, unsigned int
> wmax, + unsigned int walign, u32 *h,
> + unsigned int hmin, unsigned int hmax,
> + unsigned int halign)
> +{
> + int width, height, w_step, h_step;
These should be unsigned.
> +
> + width = *w;
> + height = *h;
> +
> + w_step = 1 << walign;
> + h_step = 1 << halign;
> + v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 3);
> +
> + if (*w < width && *w + w_step < wmax)
> + *w += w_step;
> + if (*h < height && *h + h_step < hmax)
> + *h += h_step;
> +}
> +
> +
> +static int jpu_try_fmt(struct file *file, void *priv, struct v4l2_format
> *f) +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> + struct jpu_fmt *fmt;
> + struct jpu_q_data *q_data;
> + unsigned int f_type;
> +
> + q_data = jpu_get_q_data(ctx, f->type);
> + if (!q_data)
> + return -EINVAL;
> +
> + f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
> + JPU_FMT_TYPE_CAPTURE;
> +
> + fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
> + if (!fmt)
> + fmt = q_data->default_fmt;
> +
> + pix->pixelformat = fmt->fourcc;
> + jpu_bound_align_image(&pix->width, JPU_WIDTH_MIN, JPU_WIDTH_MAX,
> + fmt->h_align, &pix->height, JPU_HEIGHT_MIN,
> + JPU_HEIGHT_MAX, fmt->v_align);
> +
> + if (fmt->fourcc = V4L2_PIX_FMT_JPEG) {
> + if (pix->sizeimage <= 0)
> + pix->sizeimage = PAGE_SIZE;
PAGE_SIZE, really ?
> + pix->bytesperline = 0;
> + } else {
> + if (pix->bytesperline < pix->width)
> + pix->bytesperline = pix->width;
Shouldn't bytesperline take the depth into account ?
> + pix->sizeimage = (pix->width * pix->height * fmt->depth) >> 3;
sizeimage should be bytesperline * pix->height, in case bytesperline is larger
than the minimum value.
> + }
> +
> + pix->field = V4L2_FIELD_NONE;
> + pix->colorspace = fmt->colorspace;
> +
> + return 0;
> +}
> +
> +static int jpu_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> + struct vb2_queue *vq;
> + struct jpu_q_data *q_data;
> + unsigned int f_type;
> + int ret;
> +
> + ret = jpu_try_fmt(file, priv, f);
> + if (ret)
> + return ret;
> +
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (!vq)
> + return -EINVAL;
> +
> + q_data = jpu_get_q_data(ctx, f->type);
> + if (!q_data)
> + return -EINVAL;
> +
> + if (vb2_is_busy(vq)) {
> + v4l2_err(&ctx->jpu->v4l2_dev, "%s queue busy\n", __func__);
> + return -EBUSY;
> + }
> +
> + f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
> + JPU_FMT_TYPE_CAPTURE;
> +
> + q_data->fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
> + q_data->w = pix->width;
> + q_data->h = pix->height;
> + if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
> + q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3;
> + else
> + q_data->size = pix->sizeimage;
> +
> + return 0;
> +}
> +
> +static int jpu_g_selection(struct file *file, void *priv,
> + struct v4l2_selection *s)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + return -ENOTTY;
A leftover ?
> + if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
> + s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + return -EINVAL;
> +
> + switch (s->target) {
> + case V4L2_SEL_TGT_CROP:
> + case V4L2_SEL_TGT_CROP_BOUNDS:
> + case V4L2_SEL_TGT_CROP_DEFAULT:
> + case V4L2_SEL_TGT_COMPOSE:
> + case V4L2_SEL_TGT_COMPOSE_DEFAULT:
> + s->r.width = ctx->out_q.w;
> + s->r.height = ctx->out_q.h;
> + break;
> + case V4L2_SEL_TGT_COMPOSE_BOUNDS:
> + case V4L2_SEL_TGT_COMPOSE_PADDED:
> + s->r.width = ctx->cap_q.w;
> + s->r.height = ctx->cap_q.h;
> + break;
> + default:
> + return -EINVAL;
> + }
> + s->r.left = 0;
> + s->r.top = 0;
> + return 0;
> +}
> +
> +/*
> + * V4L2 controls
> + */
> +static int jpu_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct jpu_ctx *ctx = ctrl_to_ctx(ctrl);
> + unsigned long flags;
> +
> + spin_lock_irqsave(&ctx->jpu->slock, flags);
> +
> + if (ctrl->id = V4L2_CID_JPEG_COMPRESSION_QUALITY)
> + ctx->compr_quality = ctrl->val;
> +
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> + return 0;
> +}
> +
> +static int jpu_g_priority(struct file *file, void *priv, enum v4l2_priority
> *p) +{
> + return -ENOTTY;
> +}
> +
> +static int jpu_s_priority(struct file *file, void *priv, enum v4l2_priority
> p) +{
> + return -ENOTTY;
> +}
Can't you just leave the operations unimplemented ?
> +static const struct v4l2_ctrl_ops jpu_ctrl_ops = {
> + .s_ctrl = jpu_s_ctrl,
> +};
> +
> +static const struct v4l2_ioctl_ops jpu_ioctl_ops = {
> + .vidioc_querycap = jpu_querycap,
> +
> + .vidioc_enum_fmt_vid_cap = jpu_enum_fmt_vid_cap,
> + .vidioc_enum_fmt_vid_out = jpu_enum_fmt_vid_out,
> +
> + .vidioc_g_fmt_vid_cap = jpu_g_fmt,
> + .vidioc_g_fmt_vid_out = jpu_g_fmt,
> +
> + .vidioc_try_fmt_vid_cap = jpu_try_fmt,
> + .vidioc_try_fmt_vid_out = jpu_try_fmt,
> +
> + .vidioc_s_fmt_vid_cap = jpu_s_fmt,
> + .vidioc_s_fmt_vid_out = jpu_s_fmt,
> +
> + .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
> + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
> + .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
> + .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
> + .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> +
> + .vidioc_g_selection = jpu_g_selection,
> + .vidioc_s_priority = jpu_s_priority,
> + .vidioc_g_priority = jpu_g_priority,
> + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
> + .vidioc_unsubscribe_event = v4l2_event_unsubscribe
> +};
> +
> +static int jpu_controls_create(struct jpu_ctx *ctx)
> +{
> + struct v4l2_ctrl *ctrl;
> +
> + v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
You have a single control, so you could use 1 instead of 3.
> + if (ctx->mode = JPU_ENCODE) {
> + v4l2_ctrl_new_std(&ctx->ctrl_handler, &jpu_ctrl_ops,
> + V4L2_CID_JPEG_COMPRESSION_QUALITY,
> + 0, 1, 1, 1);
> + }
> +
> + if (ctx->ctrl_handler.error)
> + return ctx->ctrl_handler.error;
> +
> + if (ctx->mode = JPU_DECODE)
> + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
> + V4L2_CTRL_FLAG_READ_ONLY;
ctrl isn't initialized.
> + return 0;
> +}
> +
> +/*
> + *
> =====================================> = + * Queue operations
> + *
> =====================================> = + */
> +static int jpu_queue_setup(struct vb2_queue *vq,
> + const struct v4l2_format *fmt,
> + unsigned int *nbuffers, unsigned int *nplanes,
> + unsigned int sizes[], void *alloc_ctxs[])
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
> + struct jpu_q_data *q_data;
> + unsigned int size, count = *nbuffers;
> +
> + q_data = jpu_get_q_data(ctx, vq->type);
> + if (q_data = NULL)
> + return -EINVAL;
> +
> + size = q_data->size;
> +
> + /*
> + * Header is parsed during decoding and parsed information stored
> + * in the context so we do not allow another buffer to overwrite it
> + */
> + if (ctx->mode = JPU_DECODE)
> + count = 1;
> +
> + *nbuffers = count;
> + *nplanes = 1;
> + sizes[0] = size;
> + alloc_ctxs[0] = ctx->jpu->alloc_ctx;
> +
> + return 0;
> +}
> +
> +static int jpu_buf_prepare(struct vb2_buffer *vb)
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct jpu_q_data *q_data;
> +
> + q_data = jpu_get_q_data(ctx, vb->vb2_queue->type);
> + if (q_data = NULL)
> + return -EINVAL;
> +
> + if (vb2_plane_size(vb, 0) < q_data->size) {
> + pr_err("%s: data will not fit into plane (%lu < %lu)\n",
> + __func__, vb2_plane_size(vb, 0), (long)q_data->size);
> + return -EINVAL;
> + }
> +
> + vb2_set_plane_payload(vb, 0, q_data->size);
> +
> + return 0;
> +}
> +
> +static void jpu_buf_queue(struct vb2_buffer *vb)
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> +
> + if (ctx->mode = JPU_DECODE &&
> + vb->vb2_queue->type = V4L2_BUF_TYPE_VIDEO_OUTPUT) {
> + struct jpu_q_data *q_data;
> + struct jpu *jpu = ctx->jpu;
> + unsigned int subsampling, w_out, h_out, w_cap, h_cap;
> + unsigned long src_addr, flags;
> +
> + src_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
> +
> + jpu_reset(jpu->regs);
> +
> + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
> + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> +
> + spin_lock_irqsave(&jpu->slock, flags);
> + jpu->status = JPU_BUSY;
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> +
> + iowrite32(INT(3), jpu->regs + JINTE);
> + iowrite32(src_addr, jpu->regs + JIFDSA1);
> + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> +
> + if (wait_event_interruptible_timeout(jpu->wq,
> + jpu->status != JPU_BUSY,
> + msecs_to_jiffies(100)) > 0
> + && jpu->status = JPU_OK)
> + ctx->hdr_parsed = true;
> +
> + w_out = ioread32(jpu->regs + JCHSZU) << 8 |
> + ioread32(jpu->regs + JCHSZD);
> +
> + h_out = ioread32(jpu->regs + JCVSZU) << 8 |
> + ioread32(jpu->regs + JCVSZD);
> +
> + w_cap = ioread32(jpu->regs + JIFDDHSZ);
> + h_cap = ioread32(jpu->regs + JIFDDVSZ);
> +
> + switch (ioread32(jpu->regs + JCMOD) & JCMOD_REDU) {
> + case JCMOD_REDU_422:
> + subsampling = V4L2_PIX_FMT_NV16;
> + break;
> + case JCMOD_REDU_420:
> + subsampling = V4L2_PIX_FMT_NV12;
> + break;
> + default:
> + subsampling = 0;
> + }
> +
> + if (!ctx->hdr_parsed || !subsampling || w_out > JPU_WIDTH_MAX ||
> + w_out < JPU_WIDTH_MIN || h_out > JPU_HEIGHT_MAX ||
> + h_out < JPU_HEIGHT_MIN) {
> + pr_err("incompatible or corrupted JPEG data\n");
> + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
> + return;
> + }
> +
> + q_data = &ctx->out_q;
> + q_data->w = w_out;
> + q_data->h = h_out;
> +
> + q_data = &ctx->cap_q;
> + q_data->w = w_cap;
> + q_data->h = h_cap;
> +
> + q_data->fmt = jpu_find_format(JPU_DECODE, subsampling,
> + JPU_FMT_TYPE_CAPTURE);
> +
> + q_data->size > + (q_data->w * q_data->h * q_data->fmt->depth) >> 3;
> + }
> +
> + if (ctx->fh.m2m_ctx)
> + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
> +}
> +
> +static int jpu_start_streaming(struct vb2_queue *q, unsigned int count)
> +{
> + return 0;
> +}
> +
> +static void jpu_stop_streaming(struct vb2_queue *q)
> +{
> +}
> +
> +static struct vb2_ops jpu_qops = {
> + .queue_setup = jpu_queue_setup,
> + .buf_prepare = jpu_buf_prepare,
> + .buf_queue = jpu_buf_queue,
> + .wait_prepare = vb2_ops_wait_prepare,
> + .wait_finish = vb2_ops_wait_finish,
> + .start_streaming = jpu_start_streaming,
> + .stop_streaming = jpu_stop_streaming,
> +};
> +
> +static int jpu_queue_init(void *priv, struct vb2_queue *src_vq,
> + struct vb2_queue *dst_vq)
> +{
> + struct jpu_ctx *ctx = priv;
> + int ret;
> +
> + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
> + src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
Any reason not to enable DMABUF (here and for the destination queue) ? I'd
like to encourage userspace to move from USERPTR to DMABUF.
> + src_vq->drv_priv = ctx;
> + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + src_vq->ops = &jpu_qops;
> + src_vq->mem_ops = &vb2_dma_contig_memops;
> + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + src_vq->lock = &ctx->jpu->mutex;
> +
> + ret = vb2_queue_init(src_vq);
> + if (ret)
> + return ret;
> +
> + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> + dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
> + dst_vq->drv_priv = ctx;
> + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + dst_vq->ops = &jpu_qops;
> + dst_vq->mem_ops = &vb2_dma_contig_memops;
> + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + dst_vq->lock = &ctx->jpu->mutex;
> +
> + return vb2_queue_init(dst_vq);
> +}
> +
> +/*
> + *
> =====================================> = + * Device file operations
> + *
> =====================================> = + */
> +static int jpu_open(struct file *file)
> +{
> + struct jpu *jpu = video_drvdata(file);
> + struct video_device *vfd = video_devdata(file);
> + struct jpu_ctx *ctx;
> + struct jpu_q_data *out_q, *cap_q;
> + int ret = 0;
No need to initialize ret to 0.
> +
> + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> +
> + if (mutex_lock_interruptible(&jpu->mutex)) {
> + ret = -ERESTARTSYS;
> + goto free;
> + }
> +
> + v4l2_fh_init(&ctx->fh, vfd);
> + ctx->fh.ctrl_handler = &ctx->ctrl_handler;
> + file->private_data = &ctx->fh;
> + v4l2_fh_add(&ctx->fh);
> +
> + out_q = &ctx->out_q;
> + cap_q = &ctx->cap_q;
> +
> + out_q->w = JPU_DEFAULT_WIDTH;
> + out_q->h = JPU_DEFAULT_HEIGHT;
> +
> + cap_q->w = JPU_DEFAULT_WIDTH;
> + cap_q->h = JPU_DEFAULT_HEIGHT;
> +
> + ctx->jpu = jpu;
> + if (vfd = jpu->vfd_encoder) {
> + ctx->mode = JPU_ENCODE;
> + out_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
> + JPU_FMT_TYPE_OUTPUT);
> + cap_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
> + JPU_FMT_TYPE_CAPTURE);
> + out_q->size = (out_q->w * out_q->h * out_q->fmt->depth) >> 3;
> + cap_q->size = PAGE_SIZE;
> + } else {
> + ctx->mode = JPU_DECODE;
> + out_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
> + JPU_FMT_TYPE_OUTPUT);
> + cap_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
> + JPU_FMT_TYPE_CAPTURE);
> + out_q->size = PAGE_SIZE;
> + cap_q->size = (cap_q->w * cap_q->h * cap_q->fmt->depth) >> 3;
> + }
> +
> + out_q->default_fmt = out_q->fmt;
> + cap_q->default_fmt = cap_q->fmt;
> +
> + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpu->m2m_dev, ctx, jpu_queue_init);
> + if (IS_ERR(ctx->fh.m2m_ctx)) {
> + ret = PTR_ERR(ctx->fh.m2m_ctx);
> + goto error;
> + }
> +
> + ret = jpu_controls_create(ctx);
> + if (ret < 0)
> + goto error;
> +
> + if (jpu->ref_count = 0) {
> + ret = clk_prepare_enable(jpu->clk);
> + if (ret < 0)
> + goto error;
> + }
> +
> + jpu->ref_count++;
> +
> + mutex_unlock(&jpu->mutex);
> + return 0;
> +
> +error:
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + mutex_unlock(&jpu->mutex);
> +free:
> + kfree(ctx);
> + return ret;
> +}
> +
> +static int jpu_release(struct file *file)
> +{
> + struct jpu *jpu = video_drvdata(file);
> + struct jpu_ctx *ctx = fh_to_ctx(file->private_data);
> +
> + mutex_lock(&jpu->mutex);
> + if (--jpu->ref_count = 0)
> + clk_disable_unprepare(jpu->clk);
> + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> + v4l2_ctrl_handler_free(&ctx->ctrl_handler);
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + kfree(ctx);
> + mutex_unlock(&jpu->mutex);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_file_operations jpu_fops = {
> + .owner = THIS_MODULE,
> + .open = jpu_open,
> + .release = jpu_release,
> + .unlocked_ioctl = video_ioctl2,
> + .poll = v4l2_m2m_fop_poll,
> + .mmap = v4l2_m2m_fop_mmap,
> +};
> +
> +/*
> + *
> =====================================> = + * mem2mem callbacks
> + *
> =====================================> = + */
> +static void jpu_device_run(void *priv)
> +{
> + struct jpu_ctx *ctx = priv;
> + struct jpu *jpu = ctx->jpu;
> + struct vb2_buffer *src_buf, *dst_buf;
> + unsigned long src_addr, dst_addr, flags;
> + void *dst_vaddr;
> + unsigned int w, h;
> +
> + spin_lock_irqsave(&ctx->jpu->slock, flags);
Can this function be called from a context where interrupts are disabled ? If
not spin_lock_irq is enough.
> +
> + src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> + dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> + src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
> + dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
> + dst_vaddr = vb2_plane_vaddr(dst_buf, 0);
> +
> + jpu_reset(jpu->regs);
> +
> + if (ctx->mode = JPU_ENCODE) {
> + unsigned int redu, inft;
> +
> + w = ctx->out_q.w;
> + h = ctx->out_q.h;
> +
> + jpu_generate_hdr(&ctx->out_q, ctx->compr_quality, dst_vaddr);
> +
> + if (ctx->out_q.fmt->fourcc = V4L2_PIX_FMT_NV12) {
> + redu = JCMOD_REDU_420;
> + inft = JIFECNT_INFT_420;
> + } else {
> + redu = JCMOD_REDU_422;
> + inft = JIFECNT_INFT_422;
> + }
> +
> + /* the only no marker mode works for encoding */
> + iowrite32(JCMOD_DSP_ENC | JCMOD_PCTR | redu | JCMOD_SOI_ENABLE |
> + JCMOD_MSKIP_ENABLE, jpu->regs + JCMOD);
> +
> + iowrite32(JIFECNT_SWAP_WB | inft, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> + iowrite32(INT(10), jpu->regs + JINTE);
> +
> + /* Y and C components source addresses */
> + iowrite32(src_addr, jpu->regs + JIFESYA1);
> + iowrite32(src_addr + w * h, jpu->regs + JIFESCA1);
> +
> + /* memory width */
> + iowrite32(w, jpu->regs + JIFESMW);
> +
> + iowrite32((w >> 8) & JCSZ_MASK, jpu->regs + JCHSZU);
> + iowrite32(w & JCSZ_MASK, jpu->regs + JCHSZD);
> +
> + iowrite32((h >> 8) & JCSZ_MASK, jpu->regs + JCVSZU);
> + iowrite32(h & JCSZ_MASK, jpu->regs + JCVSZD);
> +
> + iowrite32(w, jpu->regs + JIFESHSZ);
> + iowrite32(h, jpu->regs + JIFESVSZ);
> +
> + iowrite32(dst_addr + JPU_JPEG_HDR_SIZE, jpu->regs + JIFEDA1);
> +
> + iowrite32(0 << JCQTN_SHIFT(1) | 1 << JCQTN_SHIFT(2) |
> + 1 << JCQTN_SHIFT(3), jpu->regs + JCQTN);
> +
> + iowrite32(0 << JCHTN_AC_SHIFT(1) | 0 << JCHTN_DC_SHIFT(1) |
> + 1 << JCHTN_AC_SHIFT(2) | 1 << JCHTN_DC_SHIFT(2) |
> + 1 << JCHTN_AC_SHIFT(3) | 1 << JCHTN_DC_SHIFT(3),
> + jpu->regs + JCHTN);
> +
> + jpu_set_qtbl(jpu->regs, ctx->compr_quality);
> + jpu_set_htbl(jpu->regs);
> + } else {
> + w = ctx->cap_q.w;
> + h = ctx->cap_q.h;
> +
> + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
> + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> + iowrite32(INT(10) | INT(7) | INT(6) | INT(5),
> + jpu->regs + JINTE);
> + iowrite32(src_addr, jpu->regs + JIFDSA1);
> + iowrite32(w, jpu->regs + JIFDDMW);
> + iowrite32(dst_addr, jpu->regs + JIFDDYA1);
> + iowrite32(dst_addr + w * h, jpu->regs + JIFDDCA1);
> + }
> +
> + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> +}
> +
> +static int jpu_job_ready(void *priv)
> +{
> + struct jpu_ctx *ctx = priv;
> +
> + if (ctx->mode = JPU_DECODE)
> + return ctx->hdr_parsed;
> + return 1;
> +}
> +
> +static void jpu_job_abort(void *priv)
> +{
> +}
> +
> +static struct v4l2_m2m_ops jpu_m2m_ops = {
> + .device_run = jpu_device_run,
> + .job_ready = jpu_job_ready,
> + .job_abort = jpu_job_abort,
> +};
> +
> +/*
> + *
> =====================================> = + * IRQ handler
> + *
> =====================================> = + */
> +static irqreturn_t jpu_irq_handler(int irq, void *dev_id)
> +{
> + struct jpu *jpu = dev_id;
> + struct jpu_ctx *curr_ctx;
> + struct vb2_buffer *src_buf, *dst_buf;
> + unsigned long payload_size = 0;
> + unsigned int int_status;
> + unsigned int error;
> +
> + spin_lock(&jpu->slock);
> +
> + int_status = ioread32(jpu->regs + JINTS);
> + jpu_int_clear(jpu->regs, int_status);
> +
> + /*
> + * In any mode (decoding/encoding) we can additionaly get
> + * error status (5th bit)
> + * jpu operation complete status (6th bit)
> + */
> + if (!((ioread32(jpu->regs + JINTE) | INT(5) | INT(6)) & int_status)) {
Could you create macros for the interrupt status bits instead of hardcoding
them ?
> + spin_unlock(&jpu->slock);
> + return IRQ_NONE;
> + }
> +
> + if (jpu->status = JPU_BUSY) {
> + if (int_status & INT(3))
> + jpu->status = JPU_OK;
> + if (int_status & INT(5))
> + jpu->status = JPU_ERR;
> + wake_up_interruptible(&jpu->wq);
> + goto handled;
> + }
> +
> + if ((int_status & INT(6)) && !(int_status & INT(10)))
> + goto handled;
> +
> + curr_ctx = v4l2_m2m_get_curr_priv(jpu->m2m_dev);
> +
> + src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
> + dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
> +
> + if (int_status & INT(10)) {
> + if (curr_ctx->mode = JPU_ENCODE) {
> + payload_size = ioread32(jpu->regs + JCDTCU) << 16 |
> + ioread32(jpu->regs + JCDTCM) << 8 |
> + ioread32(jpu->regs + JCDTCD);
> + vb2_set_plane_payload(dst_buf, 0,
> + payload_size + JPU_JPEG_HDR_SIZE);
> + }
> + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
> + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
> + } else if (int_status & INT(5)) {
> + error = ioread32(jpu->regs + JCDERR);
> + dev_err(jpu->dev, "error 0x%X\n", error);
> + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
> + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
> + }
> +
> + v4l2_m2m_job_finish(jpu->m2m_dev, curr_ctx->fh.m2m_ctx);
> +
> +handled:
> + spin_unlock(&jpu->slock);
> + return IRQ_HANDLED;
> +}
> +
> +/*
> + *
> =====================================> = + * Driver basic infrastructure
> + *
> =====================================> = + */
> +static const struct of_device_id jpu_dt_ids[] = {
> + { .compatible = "renesas,jpu-r8a7790" },
> + { .compatible = "renesas,jpu-r8a7791" },
> + { .compatible = "renesas,jpu-gen2" },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, jpu_dt_ids);
> +
> +static int jpu_probe(struct platform_device *pdev)
> +{
> + struct jpu *jpu;
> + struct resource *res;
> + int ret;
> +
> + jpu = devm_kzalloc(&pdev->dev, sizeof(struct jpu), GFP_KERNEL);
> + if (!jpu)
> + return -ENOMEM;
> +
> + mutex_init(&jpu->mutex);
> + spin_lock_init(&jpu->slock);
> + jpu->dev = &pdev->dev;
> +
> + /* memory-mapped registers */
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + jpu->regs = devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(jpu->regs))
> + return PTR_ERR(jpu->regs);
> +
> + /* interrupt service routine registration */
> + jpu->irq = ret = platform_get_irq(pdev, 0);
> + if (ret < 0) {
> + dev_err(&pdev->dev, "cannot find IRQ\n");
> + return ret;
> + }
> +
> + ret = devm_request_irq(&pdev->dev, jpu->irq, jpu_irq_handler, 0,
> + dev_name(&pdev->dev), jpu);
> + if (ret) {
> + dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpu->irq);
> + return ret;
> + }
> +
> + /* clocks */
> + jpu->clk = devm_clk_get(&pdev->dev, NULL);
> + if (IS_ERR(jpu->clk)) {
> + dev_err(&pdev->dev, "cannot get clock\n");
> + ret = PTR_ERR(jpu->clk);
> + return ret;
> + }
> +
> + /* v4l2 device */
> + ret = v4l2_device_register(&pdev->dev, &jpu->v4l2_dev);
> + if (ret) {
> + dev_err(&pdev->dev, "Failed to register v4l2 device\n");
> + goto clk_get_rollback;
> + }
> +
> + /* mem2mem device */
> + jpu->m2m_dev = v4l2_m2m_init(&jpu_m2m_ops);
> + if (IS_ERR(jpu->m2m_dev)) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to init mem2mem device\n");
> + ret = PTR_ERR(jpu->m2m_dev);
> + goto device_register_rollback;
> + }
> +
> + jpu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
> + if (IS_ERR(jpu->alloc_ctx)) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to init memory allocator\n");
> + ret = PTR_ERR(jpu->alloc_ctx);
> + goto m2m_init_rollback;
> + }
> +
> + /* JPEG encoder /dev/videoX node */
> + jpu->vfd_encoder = video_device_alloc();
> + if (!jpu->vfd_encoder) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
> + ret = -ENOMEM;
> + goto vb2_allocator_rollback;
> + }
> + strlcpy(jpu->vfd_encoder->name, JPU_M2M_NAME,
> + sizeof(jpu->vfd_encoder->name));
> + jpu->vfd_encoder->fops = &jpu_fops;
> + jpu->vfd_encoder->ioctl_ops = &jpu_ioctl_ops;
> + jpu->vfd_encoder->minor = -1;
> + jpu->vfd_encoder->release = video_device_release;
> + jpu->vfd_encoder->lock = &jpu->mutex;
> + jpu->vfd_encoder->v4l2_dev = &jpu->v4l2_dev;
> + jpu->vfd_encoder->vfl_dir = VFL_DIR_M2M;
> +
> + ret = video_register_device(jpu->vfd_encoder, VFL_TYPE_GRABBER, -1);
> + if (ret) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
> + goto enc_vdev_alloc_rollback;
> + }
> +
> + video_set_drvdata(jpu->vfd_encoder, jpu);
> + v4l2_info(&jpu->v4l2_dev, "encoder device registered as /dev/video%d\n",
> + jpu->vfd_encoder->num);
> +
> + /* JPEG decoder /dev/videoX node */
> + jpu->vfd_decoder = video_device_alloc();
> + if (!jpu->vfd_decoder) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
> + ret = -ENOMEM;
> + goto enc_vdev_register_rollback;
> + }
> + strlcpy(jpu->vfd_decoder->name, JPU_M2M_NAME,
> + sizeof(jpu->vfd_decoder->name));
> + jpu->vfd_decoder->fops = &jpu_fops;
> + jpu->vfd_decoder->ioctl_ops = &jpu_ioctl_ops;
> + jpu->vfd_decoder->minor = -1;
> + jpu->vfd_decoder->release = video_device_release;
> + jpu->vfd_decoder->lock = &jpu->mutex;
> + jpu->vfd_decoder->v4l2_dev = &jpu->v4l2_dev;
> + jpu->vfd_decoder->vfl_dir = VFL_DIR_M2M;
> +
> + ret = video_register_device(jpu->vfd_decoder, VFL_TYPE_GRABBER, -1);
> + if (ret) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
> + goto dec_vdev_alloc_rollback;
> + }
> +
> + video_set_drvdata(jpu->vfd_decoder, jpu);
> + v4l2_info(&jpu->v4l2_dev, "decoder device registered as /dev/video%d\n",
> + jpu->vfd_decoder->num);
> +
> + /* final statements & power management */
> + platform_set_drvdata(pdev, jpu);
> +
> + init_waitqueue_head(&jpu->wq);
> +
> + v4l2_info(&jpu->v4l2_dev, "Renesas JPEG codec\n");
> +
> + return 0;
> +
> +dec_vdev_alloc_rollback:
> + video_device_release(jpu->vfd_decoder);
> +
> +enc_vdev_register_rollback:
> + video_unregister_device(jpu->vfd_encoder);
> +
> +enc_vdev_alloc_rollback:
> + video_device_release(jpu->vfd_encoder);
> +
> +vb2_allocator_rollback:
> + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> +
> +m2m_init_rollback:
> + v4l2_m2m_release(jpu->m2m_dev);
> +
> +device_register_rollback:
> + v4l2_device_unregister(&jpu->v4l2_dev);
> +
> +clk_get_rollback:
> + clk_disable_unprepare(jpu->clk);
I don't think this last call is needed.
> +
> + return ret;
> +}
> +
> +static int jpu_remove(struct platform_device *pdev)
> +{
> + struct jpu *jpu = platform_get_drvdata(pdev);
> +
> + video_unregister_device(jpu->vfd_decoder);
> + video_device_release(jpu->vfd_decoder);
> + video_unregister_device(jpu->vfd_encoder);
> + video_device_release(jpu->vfd_encoder);
> + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> + v4l2_m2m_release(jpu->m2m_dev);
> + v4l2_device_unregister(&jpu->v4l2_dev);
> + clk_disable_unprepare(jpu->clk);
Neither is this one.
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int jpu_suspend(struct device *dev)
> +{
> + struct jpu *jpu = dev_get_drvdata(dev);
> +
> + if (jpu->ref_count = 0)
> + return 0;
> +
> + clk_disable_unprepare(jpu->clk);
> +
> + return 0;
> +}
> +
> +static int jpu_resume(struct device *dev)
> +{
> + struct jpu *jpu = dev_get_drvdata(dev);
> +
> + if (jpu->ref_count)
Shouldn't this be ref_count = 0 ?
> + return 0;
> +
> + clk_prepare_enable(jpu->clk);
> +
> + return 0;
> +}
> +#endif
> +
> +static const struct dev_pm_ops jpu_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(jpu_suspend, jpu_resume)
> +};
> +
> +static struct platform_driver jpu_driver = {
> + .probe = jpu_probe,
> + .remove = jpu_remove,
> + .driver = {
> + .of_match_table = jpu_dt_ids,
> + .owner = THIS_MODULE,
> + .name = JPU_M2M_NAME,
> + .pm = &jpu_pm_ops,
> + },
> +};
> +
> +module_platform_driver(jpu_driver);
> +
> +MODULE_ALIAS("jpu");
> +MODULE_AUTHOR("Mikhail Ulianov <mikhail.ulyanov@cogentembedded.com>");
> +MODULE_DESCRIPTION("Renesas JPEG codec driver");
> +MODULE_LICENSE("GPL v2");
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 78+ messages in thread* Re: [PATCH v2 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-09-26 14:01 ` Laurent Pinchart
0 siblings, 0 replies; 78+ messages in thread
From: Laurent Pinchart @ 2014-09-26 14:01 UTC (permalink / raw)
To: Mikhail Ulyanov
Cc: horms, magnus.damm, m.chehab, robh+dt, grant.likely,
hans.verkuil, linux-sh, linux-media, devicetree
Hi Mikhail,
Thank you for the patch.
On Monday 25 August 2014 16:29:47 Mikhail Ulyanov wrote:
> This patch contains driver for Renesas R-Car JPEG codec.
>
> Cnanges since v1:
> - s/g_fmt function simplified
> - default format for queues added
> - dumb vidioc functions added to be in compliance with standard api:
> jpu_s_priority, jpu_g_priority
> - standard v4l2_ctrl_subscribe_event and v4l2_event_unsubscribe
> now in use by the same reason
>
> Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
> ---
> drivers/media/platform/Kconfig | 11 +
> drivers/media/platform/Makefile | 2 +
> drivers/media/platform/jpu.c | 1628 ++++++++++++++++++++++++++++++++++++
> 3 files changed, 1641 insertions(+)
> create mode 100644 drivers/media/platform/jpu.c
>
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index 6d86646..1b8c846 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -220,6 +220,17 @@ config VIDEO_RENESAS_VSP1
> To compile this driver as a module, choose M here: the module
> will be called vsp1.
>
> +config VIDEO_RENESAS_JPU
> + tristate "Renesas JPEG Processing Unit"
> + depends on VIDEO_DEV && VIDEO_V4L2
> + select VIDEOBUF2_DMA_CONTIG
> + select V4L2_MEM2MEM_DEV
> + ---help---
> + This is a V4L2 driver for the Renesas JPEG Processing Unit.
> +
> + To compile this driver as a module, choose M here: the module
> + will be called jpu.
> +
You could move this above VIDEO_RENESAS_VSP1 to keep the file somehow sorted.
Same comment for the Makefile.
> config VIDEO_TI_VPE
> tristate "TI VPE (Video Processing Engine) driver"
> depends on VIDEO_DEV && VIDEO_V4L2 && SOC_DRA7XX
> diff --git a/drivers/media/platform/Makefile
> b/drivers/media/platform/Makefile index e5269da..e438534 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -47,6 +47,8 @@ obj-$(CONFIG_SOC_CAMERA) += soc_camera/
>
> obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
>
> +obj-$(CONFIG_VIDEO_RENESAS_JPU) += jpu.o
> +
> obj-y += davinci/
>
> obj-$(CONFIG_ARCH_OMAP) += omap/
> diff --git a/drivers/media/platform/jpu.c b/drivers/media/platform/jpu.c
> new file mode 100644
> index 0000000..da70491
> --- /dev/null
> +++ b/drivers/media/platform/jpu.c
> @@ -0,0 +1,1628 @@
> +/*
> + * Author: Mikhail Ulyanov <source@cogentembedded.com>
> + * Copyright (C) 2014 Cogent Embedded, Inc.
> + * Copyright (C) 2014 Renesas Electronics Corporation
> + *
> + * This is based on the drivers/media/platform/s5p-jpu driver by
> + * Andrzej Pietrasiewicz and Jacek Anaszewski.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/err.h>
> +#include <linux/gfp.h>
Do you really gfp.h ? slab.h should be enough.
> +#include <linux/interrupt.h>
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <linux/spinlock.h>
> +#include <linux/string.h>
> +#include <linux/videodev2.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fh.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/videobuf2-core.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +
> +#define JPU_M2M_NAME "jpu"
> +
> +#define JPU_WIDTH_MIN 16
> +#define JPU_HEIGHT_MIN 16
> +#define JPU_WIDTH_MAX 4096
> +#define JPU_HEIGHT_MAX 4096
> +#define JPU_DEFAULT_WIDTH 640
> +#define JPU_DEFAULT_HEIGHT 480
> +
> +#define JPU_ENCODE 0
> +#define JPU_DECODE 1
How about making this an enum, or turning the ctx->mode field into a boolean
compress (or encoder, decode, decompress...) field ?
> +/* Flags that indicate a format can be used for capture/output */
> +#define JPU_FMT_TYPE_OUTPUT 0
> +#define JPU_FMT_TYPE_CAPTURE 1
> +#define JPU_ENC_CAPTURE (1 << 0)
> +#define JPU_ENC_OUTPUT (1 << 1)
> +#define JPU_DEC_CAPTURE (1 << 2)
> +#define JPU_DEC_OUTPUT (1 << 3)
> +
> +/*
> + * JPEG registers and bits
> + */
> +
> +/* JPEG code mode register */
> +#define JCMOD 0x00
> +#define JCMOD_SOI_DISABLE (1 << 8)
> +#define JCMOD_SOI_ENABLE (0 << 8)
> +#define JCMOD_PCTR (1 << 7)
> +#define JCMOD_MSKIP_DISABLE (0 << 5)
> +#define JCMOD_MSKIP_ENABLE (1 << 5)
> +#define JCMOD_DSP_ENC (0 << 3)
> +#define JCMOD_DSP_DEC (1 << 3)
> +#define JCMOD_REDU (7 << 0)
> +#define JCMOD_REDU_422 (1 << 0)
> +#define JCMOD_REDU_420 (2 << 0)
> +
> +/* JPEG code command register */
> +#define JCCMD 0x04
> +#define JCCMD_SRST (1 << 12)
> +#define JCCMD_BRST (1 << 7)
> +#define JCCMD_JEND (1 << 2)
> +#define JCCMD_JSRT (1 << 0)
> +
> +/* JPEG code quantanization table number register */
> +#define JCQTN 0x0C
> +#define JCQTN_SHIFT(t) (((t) - 1) << 1)
> +
> +/* JPEG code Huffman table number register */
> +#define JCHTN 0x10
> +#define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
> +#define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
> +
> +#define JCDRIU 0x14 /* JPEG code DRI upper register */
> +#define JCDRIL 0x18 /* JPEG code DRI lower register */
> +#define JCVSZU 0x1C /* JPEG code vertical size upper register */
The majority of v4l drivers tend to favour lowercase hex values, but as it's a
small majority, I won't push for that :-)
> +#define JCVSZD 0x20 /* JPEG code vertical size lower register */
> +#define JCHSZU 0x24 /* JPEG code horizontal size upper register */
> +#define JCHSZD 0x28 /* JPEG code horizontal size lower register */
> +#define JCSZ_MASK 0xff /* JPEG code h/v size register contains only 1
> byte*/ +
> +#define JCDTCU 0x2C /* JPEG code data count upper register */
> +#define JCDTCM 0x30 /* JPEG code data count middle register */
> +#define JCDTCD 0x34 /* JPEG code data count lower register */
> +
> +/* JPEG interrupt enable register */
> +#define JINTE 0x38
> +
> +/* JPEG interrupt status register */
> +#define JINTS 0x3C
> +#define JINTS_MASK 0x7c68
> +
> +#define INT(n) (1 << n)
> +
> +#define JCDERR 0x40 /* JPEG code decode error register */
> +
> +/* JPEG interface encoding */
> +#define JIFECNT 0x70
> +#define JIFECNT_INFT_422 0
> +#define JIFECNT_INFT_420 1
> +#define JIFECNT_SWAP_WB (0x3 << 4)
> +
> +/* JPEG interface encode source Y address register 1 */
> +#define JIFESYA1 0x74
> +/* JPEG interface encode source C address register 1 */
> +#define JIFESCA1 0x78
> +/* JPEG interface encode source Y address register 2 */
> +#define JIFESYA2 0x7C
> +/* JPEG interface encode source C address register 2 */
> +#define JIFESCA2 0x80
> +/* JPEG interface encode source memory width register */
> +#define JIFESMW 0x84
> +/* JPEG interface encode source vertical size register */
> +#define JIFESVSZ 0x88
> +/* JPEG interface encode source horizontal size register */
> +#define JIFESHSZ 0x8C
> +/* JPEG interface encode destination address register 1 */
> +#define JIFEDA1 0x90
> +/* JPEG interface encode destination address register 2 */
> +#define JIFEDA2 0x94
> +
> +/* JPEG decoding control register */
> +#define JIFDCNT 0xA0
> +#define JIFDCNT_SWAP (3 << 1)
> +#define JIFDCNT_SWAP_NO (0 << 1)
> +#define JIFDCNT_SWAP_BYTE (1 << 1)
> +#define JIFDCNT_SWAP_WORD (2 << 1)
> +#define JIFDCNT_SWAP_WB (3 << 1)
> +
> +/* JPEG decode source address register 1 */
> +#define JIFDSA1 0xA4
> +/* JPEG decode source address register 2 */
> +#define JIFDSA2 0xA8
> +/* JPEG decode data reload size register */
> +#define JIFDDRSZ 0xAC
> +/* JPEG decode data destination memory width register */
> +#define JIFDDMW 0xB0
> +/* JPEG decode data destination vertical size register */
> +#define JIFDDVSZ 0xB4
> +/* JPEG decode data destination horizontal size register */
> +#define JIFDDHSZ 0xB8
> +/* JPEG decode data destination Y address register 1 */
> +#define JIFDDYA1 0xBC
> +/* JPEG decode data destination C address register 1 */
> +#define JIFDDCA1 0xC0
> +/* JPEG decode data destination Y address register 2 */
> +#define JIFDDYA2 0xC4
> +/* JPEG decode data destination C address register 2 */
> +#define JIFDDCA2 0xC8
> +
> +/* JPEG code quantization tables registers */
> +#define JCQTBL(n) (0x10000 + (n) * 0x40)
> +
> +/* JPEG code Huffman table DC registers */
> +#define JCHTBD(n) (0x10100 + (n) * 0x100)
> +
> +/* JPEG code Huffman table AC registers */
> +#define JCHTBA(n) (0x10120 + (n) * 0x100)
> +
> +#define JPU_JPEG_HDR_SIZE 0x250
> +
> +enum jpu_status {
> + JPU_OK,
> + JPU_BUSY,
> + JPU_ERR
> +};
> +
> +/**
> + * struct jpu - JPEG IP abstraction
> + * @mutex: the mutex protecting this structure
> + * @slock: spinlock protecting the device contexts
> + * @v4l2_dev: v4l2 device for mem2mem mode
> + * @vfd_encoder: video device node for encoder mem2mem mode
> + * @vfd_decoder: video device node for decoder mem2mem mode
> + * @m2m_dev: v4l2 mem2mem device data
> + * @regs: JPEG IP registers mapping
> + * @irq: JPEG IP irq
> + * @clk: JPEG IP clock
> + * @dev: JPEG IP struct device
> + * @alloc_ctx: videobuf2 memory allocator's context
> + * @bounds: platform specific IP limitations
> + * @wq: waitqueue for header parsing handling
> + * @statatus: current driver state variable
> + * @ref_counter: reference counter
> + */
> +struct jpu {
> + struct mutex mutex;
> + spinlock_t slock;
> +
> + struct v4l2_device v4l2_dev;
> + struct video_device *vfd_encoder;
> + struct video_device *vfd_decoder;
> + struct v4l2_m2m_dev *m2m_dev;
> +
> + void __iomem *regs;
> + unsigned int irq;
> + struct clk *clk;
> + struct device *dev;
> + void *alloc_ctx;
> + struct jpu_bounds *bounds;
> + wait_queue_head_t wq;
> + enum jpu_status status;
> + int ref_count;
> +};
> +
> +/**
> + * struct jpu_fmt - driver's internal format data
> + * @name: format descritpion
> + * @fourcc: the fourcc code, 0 if not applicable
> + * @colorspace: the colorspace specificator
> + * @depth: number of bits per pixel
> + * @h_align: horizontal alignment order (align to 2^h_align)
> + * @v_align: vertical alignment order (align to 2^v_align)
> + * @types: types of queue this format is applicable to
> + */
> +struct jpu_fmt {
> + char *name;
> + u32 fourcc;
> + u32 colorspace;
> + int depth;
> + int h_align;
> + int v_align;
> + u32 types;
> +};
> +
> +/**
> + * jpu_q_data - parameters of one queue
> + * @fmt: driver-specific format of this queue
> + * @default_fmt: default format of this queue
> + * @w: image width
> + * @h: image height
> + * @size: image buffer size in bytes
> + */
> +struct jpu_q_data {
> + struct jpu_fmt *fmt;
> + struct jpu_fmt *default_fmt;
> + u32 w;
> + u32 h;
> + u32 size;
> +};
> +
> +/**
> + * jpu_ctx - the device context data
> + * @jpu: JPEG IP device for this context
> + * @mode: compression (encode) operation or decompression (decode)
> + * @compr_quality: destination image quality in compression (encode) mode
> + * @out_q: source (output) queue information
> + * @fh: file handler;
> + * @hdr_parsed: set if header has been parsed during decompression
> + * @ctrl_handler: controls handler
> + */
> +struct jpu_ctx {
> + struct jpu *jpu;
> + unsigned int mode;
> + unsigned short compr_quality;
> + struct jpu_q_data out_q;
> + struct jpu_q_data cap_q;
> + struct v4l2_fh fh;
> + bool hdr_parsed;
> + struct v4l2_ctrl_handler ctrl_handler;
> +};
> +
> +static struct jpu_fmt jpu_formats[] = {
> + {
> + .name = "JPEG JFIF",
> + .fourcc = V4L2_PIX_FMT_JPEG,
> + .colorspace = V4L2_COLORSPACE_JPEG,
> + .types = JPU_ENC_CAPTURE | JPU_DEC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:2 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + .depth = 16,
> + .h_align = 3,
> + .v_align = 3,
> + .types = JPU_ENC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:0 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + .depth = 12,
> + .h_align = 3,
> + .v_align = 3,
> + .types = JPU_ENC_OUTPUT,
> + },
> + {
> + .name = "YUV 4:2:2 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + .depth = 16,
> + .h_align = 2,
> + .v_align = 2,
> + .types = JPU_DEC_CAPTURE,
> + },
> + {
> + .name = "YUV 4:2:0 semiplanar, YCbCr",
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + .depth = 12,
> + .h_align = 2,
> + .v_align = 2,
> + .types = JPU_DEC_CAPTURE,
> + },
> +};
> +
> +static const u8 zigzag[] = {
> + 0x03, 0x02, 0x0b, 0x13, 0x0a, 0x01, 0x00, 0x09,
> + 0x12, 0x1b, 0x23, 0x1a, 0x11, 0x08, 0x07, 0x06,
> + 0x0f, 0x10, 0x19, 0x22, 0x2b, 0x33, 0x2a, 0x21,
> + 0x18, 0x17, 0x0e, 0x05, 0x04, 0x0d, 0x16, 0x1f,
> + 0x20, 0x29, 0x32, 0x3b, 0x3a, 0x31, 0x28, 0x27,
> + 0x1e, 0x15, 0x0e, 0x14, 0x10, 0x26, 0x2f, 0x30,
> + 0x39, 0x38, 0x37, 0x2e, 0x25, 0x1c, 0x24, 0x2b,
> + 0x36, 0x3f, 0x3e, 0x35, 0x2c, 0x34, 0x3d, 0x3c
> +};
> +
> +static unsigned char hdr_blob0[] = {
> + 0xff, 0xd8, 0xff, 0xfe, 0x00, 0x0e, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x84
> +};
> +
> +static unsigned char hdr_blob1[] = {
> + 0xff, 0xc0, 0x00, 0x11, 0x08
> +};
> +
> +static unsigned char hdr_blob2[] = {
> + 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff,
> + 0xc4, 0x01, 0xa2
> +};
> +
> +static const unsigned int qtbl_lum[2][16] = {
> + {
> + 0x14401927, 0x322e3e44, 0x10121726, 0x26354144,
> + 0x19171f26, 0x35414444, 0x27262635, 0x41444444,
> + 0x32263541, 0x44444444, 0x2e354144, 0x44444444,
> + 0x3e414444, 0x44444444, 0x44444444, 0x44444444
> + },
> + {
> + 0x08060608, 0x0c0e1011, 0x06060608, 0x0a0d0c0f,
> + 0x06060708, 0x0d0e1218, 0x0808080e, 0x0d131823,
> + 0x0c0a0d0d, 0x141a2227, 0x0e0d0e13, 0x1a222727,
> + 0x100c1318, 0x22272727, 0x110f1823, 0x27272727
> + }
> +};
> +
> +static const unsigned int qtbl_chr[2][16] = {
> + {
> + 0x15192026, 0x36444444, 0x191c1826, 0x36444444,
> + 0x2018202b, 0x42444444, 0x26262b35, 0x44444444,
> + 0x36424444, 0x44444444, 0x44444444, 0x44444444,
> + 0x44444444, 0x44444444, 0x44444444, 0x44444444
> + },
> + {
> + 0x0908090b, 0x0e111318, 0x080a090b, 0x0e0d1116,
> + 0x09090d0e, 0x0d0f171a, 0x0b0b0e0e, 0x0f141a21,
> + 0x0e0e0d0f, 0x14182127, 0x110d0f14, 0x18202727,
> + 0x1311171a, 0x21272727, 0x18161a21, 0x27272727
> + }
> +};
> +
> +static const unsigned int hdctbl_lum[7] = {
> + 0x00010501, 0x01010101, 0x01000000, 0x00000000,
> + 0x00010203, 0x04050607, 0x08090a0b
> +};
> +
> +static const unsigned int hdctbl_chr[7] = {
> + 0x00030101, 0x01010101, 0x01010100, 0x00000000,
> + 0x00010203, 0x04050607, 0x08090a0b
> +};
> +
> +static const unsigned int hactbl_lum[45] = {
> + 0x00020103, 0x03020403, 0x05050404, 0x0000017d,
> + 0x01020300, 0x04110512, 0x21314106, 0x13516107,
> + 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
> + 0x24336272, 0x82090a16, 0x1718191a, 0x25262728,
> + 0x292a3435, 0x36373839, 0x3a434445, 0x46474849,
> + 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
> + 0x6a737475, 0x76777879, 0x7a838485, 0x86878889,
> + 0x8a929394, 0x95969798, 0x999aa2a3, 0xa4a5a6a7,
> + 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
> + 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2,
> + 0xe3e4e5e6, 0xe7e8e9ea, 0xf1f2f3f4, 0xf5f6f7f8,
> + 0xf9fa0000
> +};
> +
> +static const unsigned int hactbl_chr[45] = {
> + 0x00020102, 0x04040304, 0x07050404, 0x00010277,
> + 0x00010203, 0x11040521, 0x31061241, 0x51076171,
> + 0x13223281, 0x08144291, 0xa1b1c109, 0x233352f0,
> + 0x156372d1, 0x0a162434, 0xe125f117, 0x18191a26,
> + 0x2728292a, 0x35363738, 0x393a4344, 0x45464748,
> + 0x494a5354, 0x55565758, 0x595a6364, 0x65666768,
> + 0x696a7374, 0x75767778, 0x797a8283, 0x84858687,
> + 0x88898a92, 0x93949596, 0x9798999a, 0xa2a3a4a5,
> + 0xa6a7a8a9, 0xaab2b3b4, 0xb5b6b7b8, 0xb9bac2c3,
> + 0xc4c5c6c7, 0xc8c9cad2, 0xd3d4d5d6, 0xd7d8d9da,
> + 0xe2e3e4e5, 0xe6e7e8e9, 0xeaf2f3f4, 0xf5f6f7f8,
> + 0xf9fa0000
> +};
> +
> +static struct jpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
> +{
> + return container_of(c->handler, struct jpu_ctx, ctrl_handler);
> +}
> +
> +static struct jpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
> +{
> + return container_of(fh, struct jpu_ctx, fh);
> +}
> +
> +static void jpu_set_tbl(void __iomem *regs, const unsigned int *tbl,
> + int len) {
> + unsigned int i;
> +
> + for (i = 0; i < len; i++)
> + iowrite32(tbl[i], regs + (i << 2));
> +}
> +
> +static void jpu_set_qtbl(void __iomem *regs, int quality)
> +{
> + jpu_set_tbl(regs + JCQTBL(0), qtbl_lum[quality],
> + ARRAY_SIZE(qtbl_lum[quality]));
> + jpu_set_tbl(regs + JCQTBL(1), qtbl_chr[quality],
> + ARRAY_SIZE(qtbl_chr[quality]));
> +}
> +
> +static void jpu_set_htbl(void __iomem *regs)
> +{
> + jpu_set_tbl(regs + JCHTBD(0), hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
> + jpu_set_tbl(regs + JCHTBD(1), hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
> + jpu_set_tbl(regs + JCHTBA(0), hactbl_lum, ARRAY_SIZE(hactbl_lum));
> + jpu_set_tbl(regs + JCHTBA(1), hactbl_chr, ARRAY_SIZE(hactbl_chr));
> +}
> +
> +static void jpu_int_clear(void __iomem *regs, unsigned int int_status)
> +{
> + iowrite32(~int_status & JINTS_MASK, regs + JINTS);
> +
> + if (int_status & (INT(6) | INT(5) | INT(3)))
> + iowrite32(JCCMD_JEND, regs + JCCMD);
> +}
> +
> +static void jpu_reset(void __iomem *regs)
> +{
> + iowrite32(JCCMD_SRST, regs + JCCMD);
> + while ((ioread32(regs + JCCMD) & JCCMD_SRST) != 0)
> + cpu_relax();
How about adding a timeout ?
> +}
> +
> +/*
> + *
> ===========================================================================
> = + * video ioctl operations
> + *
> ===========================================================================
> = + */
> +static void put_byte(unsigned long *p, u8 v)
> +{
> + u8 *addr = (u8 *)*p;
> +
> + *addr = v;
> + (*p)++;
> +}
> +
> +static void put_short_be(unsigned long *p, u16 v)
> +{
> + u16 *addr = (u16 *)*p;
> +
> + *addr = cpu_to_be16(v);
> + *p += 2;
> +}
> +
> +static void put_word_be(unsigned long *p, u32 v)
> +{
> + u32 *addr = (u32 *)*p;
> +
> + *addr = cpu_to_be32(v);
> + *p += 4;
> +}
> +
> +static void put_blob_byte(unsigned long *p, const unsigned char *blob,
> + unsigned int len)
> +{
> + int i;
len is an unsigned int, i should be as well. Same comment for the signed loop
indices in the rest of the driver.
> +
> + for (i = 0; i < len; i++)
> + put_byte(p, blob[i]);
Wouldn't a memcpy be more efficient ?
> +}
> +
> +static void put_qtbl(unsigned long *p, unsigned char id,
> + const unsigned int *qtbl)
> +{
> + int i;
> +
> + put_byte(p, id);
> + for (i = 0; i < ARRAY_SIZE(zigzag); i++)
> + put_byte(p, *((u8 *)qtbl + zigzag[i]));
> +}
> +
> +static void put_htbl(unsigned long *p, unsigned char tc,
> + const unsigned int *htbl, unsigned int len)
> +{
> + int i;
> +
> + put_byte(p, tc);
> + for (i = 0; i < len; i++)
> + put_word_be(p, htbl[i]);
> +}
> +
> +static void jpu_generate_hdr(struct jpu_q_data *q, int quality, void
> *buffer) +{
> + /* SOI(2) - DQT(134 / 2 tables) - SOF0(19) - DHT(420 / 2 tables) */
> + unsigned long p = (unsigned long)buffer;
> +
> + put_blob_byte(&p, hdr_blob0, ARRAY_SIZE(hdr_blob0));
> +
> + put_qtbl(&p, 0x00, qtbl_lum[quality]);
> + put_qtbl(&p, 0x01, qtbl_chr[quality]);
> +
> + put_blob_byte(&p, hdr_blob1, ARRAY_SIZE(hdr_blob1));
> +
> + put_short_be(&p, q->h);
> + put_short_be(&p, q->w);
> +
> + put_byte(&p, 0x03);
> + put_byte(&p, 0x01);
> +
> + if (q->fmt->fourcc == V4L2_PIX_FMT_NV16)
> + put_byte(&p, 0x21);
> + else
> + put_byte(&p, 0x22);
> +
> + put_blob_byte(&p, hdr_blob2, ARRAY_SIZE(hdr_blob2));
> +
> + put_htbl(&p, 0x00, hdctbl_lum, ARRAY_SIZE(hdctbl_lum));
> + put_htbl(&p, 0x10, hactbl_lum, ARRAY_SIZE(hactbl_lum));
> + p -= 2;
> +
> + put_htbl(&p, 0x01, hdctbl_chr, ARRAY_SIZE(hdctbl_chr));
> + put_htbl(&p, 0x11, hactbl_chr, ARRAY_SIZE(hactbl_chr));
Wouldn't it be more efficient to memcpy the whole header in one go and then
patch the width, height and subsampling ? You could get rid of the endianness
conversions that way.
> +}
> +
> +static int jpu_querycap(struct file *file, void *priv,
> + struct v4l2_capability *cap)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode == JPU_ENCODE) {
> + strlcpy(cap->driver, JPU_M2M_NAME " encoder",
> + sizeof(cap->driver));
> + strlcpy(cap->card, JPU_M2M_NAME " encoder",
> + sizeof(cap->card));
> + } else {
> + strlcpy(cap->driver, JPU_M2M_NAME " decoder",
> + sizeof(cap->driver));
> + strlcpy(cap->card, JPU_M2M_NAME " decoder",
> + sizeof(cap->card));
> + }
> + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
> + dev_name(ctx->jpu->dev));
> + cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M;
> + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
> + return 0;
> +}
> +
> +static struct jpu_fmt *jpu_find_format(unsigned int mode, u32 pixelformat,
> + unsigned int fmt_type)
> +{
> + unsigned int k, fmt_flag;
> +
> + if (mode == JPU_ENCODE)
> + fmt_flag = (fmt_type == JPU_FMT_TYPE_OUTPUT) ? JPU_ENC_OUTPUT :
> + JPU_ENC_CAPTURE;
> + else
> + fmt_flag = (fmt_type == JPU_FMT_TYPE_OUTPUT) ? JPU_DEC_OUTPUT :
> + JPU_DEC_CAPTURE;
> +
> + for (k = 0; k < ARRAY_SIZE(jpu_formats); k++) {
Anything wrong with i as a loop index ? :-)
> + struct jpu_fmt *fmt = &jpu_formats[k];
> +
> + if (fmt->fourcc == pixelformat && fmt->types & fmt_flag)
> + return fmt;
> + }
> +
> + return NULL;
> +}
> +
> +static int jpu_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
> +{
> + int i, num = 0;
> +
> + for (i = 0; i < ARRAY_SIZE(jpu_formats); ++i) {
> + if (jpu_formats[i].types & type) {
> + /* index-th format of type type found ? */
> + if (num == f->index)
> + break;
> + /*
> + * Correct type but haven't reached our index yet,
> + * just increment per-type index
> + */
> + ++num;
> + }
> + }
> +
> + /* Format not found */
> + if (i >= ARRAY_SIZE(jpu_formats))
> + return -EINVAL;
> +
> + strlcpy(f->description, jpu_formats[i].name, sizeof(f->description));
> + f->pixelformat = jpu_formats[i].fourcc;
> +
> + return 0;
> +}
> +
> +static int jpu_enum_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode == JPU_ENCODE)
> + return jpu_enum_fmt(f, JPU_ENC_CAPTURE);
> +
> + return jpu_enum_fmt(f, JPU_DEC_CAPTURE);
> +}
> +
> +static int jpu_enum_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + if (ctx->mode == JPU_ENCODE)
> + return jpu_enum_fmt(f, JPU_ENC_OUTPUT);
> +
> + return jpu_enum_fmt(f, JPU_DEC_OUTPUT);
> +}
> +
> +static struct jpu_q_data *jpu_get_q_data(struct jpu_ctx *ctx,
> + enum v4l2_buf_type type)
> +{
> + switch (type) {
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + return &ctx->out_q;
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + return &ctx->cap_q;
> + default:
> + return NULL;
Can the default case occur ?
> + }
> +}
> +
> +static int jpu_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
> +{
> + struct vb2_queue *vq;
> + struct jpu_q_data *q_data;
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (!vq)
> + return -EINVAL;
> +
> + if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
> + ctx->mode == JPU_DECODE && !ctx->hdr_parsed)
> + return -EINVAL;
I wonder if -EINVAL is the proper error code to be returned here. We want to
express that the format isn't available yet. What do other m2m drivers return
in this case ?
> + q_data = jpu_get_q_data(ctx, f->type);
> + if (!q_data)
> + return -EINVAL;
> +
> + pix->width = q_data->w;
> + pix->height = q_data->h;
> + pix->field = V4L2_FIELD_NONE;
> + pix->pixelformat = q_data->fmt->fourcc;
> + pix->colorspace = q_data->fmt->colorspace;
> + pix->bytesperline = 0;
> + if (pix->pixelformat != V4L2_PIX_FMT_JPEG)
> + pix->bytesperline = q_data->w;
> + pix->sizeimage = q_data->size;
> +
> + return 0;
> +}
> +
> +
> +static void jpu_bound_align_image(u32 *w, unsigned int wmin, unsigned int
> wmax, + unsigned int walign, u32 *h,
> + unsigned int hmin, unsigned int hmax,
> + unsigned int halign)
> +{
> + int width, height, w_step, h_step;
These should be unsigned.
> +
> + width = *w;
> + height = *h;
> +
> + w_step = 1 << walign;
> + h_step = 1 << halign;
> + v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 3);
> +
> + if (*w < width && *w + w_step < wmax)
> + *w += w_step;
> + if (*h < height && *h + h_step < hmax)
> + *h += h_step;
> +}
> +
> +
> +static int jpu_try_fmt(struct file *file, void *priv, struct v4l2_format
> *f) +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> + struct jpu_fmt *fmt;
> + struct jpu_q_data *q_data;
> + unsigned int f_type;
> +
> + q_data = jpu_get_q_data(ctx, f->type);
> + if (!q_data)
> + return -EINVAL;
> +
> + f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
> + JPU_FMT_TYPE_CAPTURE;
> +
> + fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
> + if (!fmt)
> + fmt = q_data->default_fmt;
> +
> + pix->pixelformat = fmt->fourcc;
> + jpu_bound_align_image(&pix->width, JPU_WIDTH_MIN, JPU_WIDTH_MAX,
> + fmt->h_align, &pix->height, JPU_HEIGHT_MIN,
> + JPU_HEIGHT_MAX, fmt->v_align);
> +
> + if (fmt->fourcc == V4L2_PIX_FMT_JPEG) {
> + if (pix->sizeimage <= 0)
> + pix->sizeimage = PAGE_SIZE;
PAGE_SIZE, really ?
> + pix->bytesperline = 0;
> + } else {
> + if (pix->bytesperline < pix->width)
> + pix->bytesperline = pix->width;
Shouldn't bytesperline take the depth into account ?
> + pix->sizeimage = (pix->width * pix->height * fmt->depth) >> 3;
sizeimage should be bytesperline * pix->height, in case bytesperline is larger
than the minimum value.
> + }
> +
> + pix->field = V4L2_FIELD_NONE;
> + pix->colorspace = fmt->colorspace;
> +
> + return 0;
> +}
> +
> +static int jpu_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> + struct v4l2_pix_format *pix = &f->fmt.pix;
> + struct vb2_queue *vq;
> + struct jpu_q_data *q_data;
> + unsigned int f_type;
> + int ret;
> +
> + ret = jpu_try_fmt(file, priv, f);
> + if (ret)
> + return ret;
> +
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (!vq)
> + return -EINVAL;
> +
> + q_data = jpu_get_q_data(ctx, f->type);
> + if (!q_data)
> + return -EINVAL;
> +
> + if (vb2_is_busy(vq)) {
> + v4l2_err(&ctx->jpu->v4l2_dev, "%s queue busy\n", __func__);
> + return -EBUSY;
> + }
> +
> + f_type = V4L2_TYPE_IS_OUTPUT(f->type) ? JPU_FMT_TYPE_OUTPUT :
> + JPU_FMT_TYPE_CAPTURE;
> +
> + q_data->fmt = jpu_find_format(ctx->mode, pix->pixelformat, f_type);
> + q_data->w = pix->width;
> + q_data->h = pix->height;
> + if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
> + q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3;
> + else
> + q_data->size = pix->sizeimage;
> +
> + return 0;
> +}
> +
> +static int jpu_g_selection(struct file *file, void *priv,
> + struct v4l2_selection *s)
> +{
> + struct jpu_ctx *ctx = fh_to_ctx(priv);
> +
> + return -ENOTTY;
A leftover ?
> + if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
> + s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + return -EINVAL;
> +
> + switch (s->target) {
> + case V4L2_SEL_TGT_CROP:
> + case V4L2_SEL_TGT_CROP_BOUNDS:
> + case V4L2_SEL_TGT_CROP_DEFAULT:
> + case V4L2_SEL_TGT_COMPOSE:
> + case V4L2_SEL_TGT_COMPOSE_DEFAULT:
> + s->r.width = ctx->out_q.w;
> + s->r.height = ctx->out_q.h;
> + break;
> + case V4L2_SEL_TGT_COMPOSE_BOUNDS:
> + case V4L2_SEL_TGT_COMPOSE_PADDED:
> + s->r.width = ctx->cap_q.w;
> + s->r.height = ctx->cap_q.h;
> + break;
> + default:
> + return -EINVAL;
> + }
> + s->r.left = 0;
> + s->r.top = 0;
> + return 0;
> +}
> +
> +/*
> + * V4L2 controls
> + */
> +static int jpu_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct jpu_ctx *ctx = ctrl_to_ctx(ctrl);
> + unsigned long flags;
> +
> + spin_lock_irqsave(&ctx->jpu->slock, flags);
> +
> + if (ctrl->id == V4L2_CID_JPEG_COMPRESSION_QUALITY)
> + ctx->compr_quality = ctrl->val;
> +
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> + return 0;
> +}
> +
> +static int jpu_g_priority(struct file *file, void *priv, enum v4l2_priority
> *p) +{
> + return -ENOTTY;
> +}
> +
> +static int jpu_s_priority(struct file *file, void *priv, enum v4l2_priority
> p) +{
> + return -ENOTTY;
> +}
Can't you just leave the operations unimplemented ?
> +static const struct v4l2_ctrl_ops jpu_ctrl_ops = {
> + .s_ctrl = jpu_s_ctrl,
> +};
> +
> +static const struct v4l2_ioctl_ops jpu_ioctl_ops = {
> + .vidioc_querycap = jpu_querycap,
> +
> + .vidioc_enum_fmt_vid_cap = jpu_enum_fmt_vid_cap,
> + .vidioc_enum_fmt_vid_out = jpu_enum_fmt_vid_out,
> +
> + .vidioc_g_fmt_vid_cap = jpu_g_fmt,
> + .vidioc_g_fmt_vid_out = jpu_g_fmt,
> +
> + .vidioc_try_fmt_vid_cap = jpu_try_fmt,
> + .vidioc_try_fmt_vid_out = jpu_try_fmt,
> +
> + .vidioc_s_fmt_vid_cap = jpu_s_fmt,
> + .vidioc_s_fmt_vid_out = jpu_s_fmt,
> +
> + .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
> + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
> + .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
> + .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
> + .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> +
> + .vidioc_g_selection = jpu_g_selection,
> + .vidioc_s_priority = jpu_s_priority,
> + .vidioc_g_priority = jpu_g_priority,
> + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
> + .vidioc_unsubscribe_event = v4l2_event_unsubscribe
> +};
> +
> +static int jpu_controls_create(struct jpu_ctx *ctx)
> +{
> + struct v4l2_ctrl *ctrl;
> +
> + v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
You have a single control, so you could use 1 instead of 3.
> + if (ctx->mode == JPU_ENCODE) {
> + v4l2_ctrl_new_std(&ctx->ctrl_handler, &jpu_ctrl_ops,
> + V4L2_CID_JPEG_COMPRESSION_QUALITY,
> + 0, 1, 1, 1);
> + }
> +
> + if (ctx->ctrl_handler.error)
> + return ctx->ctrl_handler.error;
> +
> + if (ctx->mode == JPU_DECODE)
> + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
> + V4L2_CTRL_FLAG_READ_ONLY;
ctrl isn't initialized.
> + return 0;
> +}
> +
> +/*
> + *
> ===========================================================================
> = + * Queue operations
> + *
> ===========================================================================
> = + */
> +static int jpu_queue_setup(struct vb2_queue *vq,
> + const struct v4l2_format *fmt,
> + unsigned int *nbuffers, unsigned int *nplanes,
> + unsigned int sizes[], void *alloc_ctxs[])
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
> + struct jpu_q_data *q_data;
> + unsigned int size, count = *nbuffers;
> +
> + q_data = jpu_get_q_data(ctx, vq->type);
> + if (q_data == NULL)
> + return -EINVAL;
> +
> + size = q_data->size;
> +
> + /*
> + * Header is parsed during decoding and parsed information stored
> + * in the context so we do not allow another buffer to overwrite it
> + */
> + if (ctx->mode == JPU_DECODE)
> + count = 1;
> +
> + *nbuffers = count;
> + *nplanes = 1;
> + sizes[0] = size;
> + alloc_ctxs[0] = ctx->jpu->alloc_ctx;
> +
> + return 0;
> +}
> +
> +static int jpu_buf_prepare(struct vb2_buffer *vb)
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct jpu_q_data *q_data;
> +
> + q_data = jpu_get_q_data(ctx, vb->vb2_queue->type);
> + if (q_data == NULL)
> + return -EINVAL;
> +
> + if (vb2_plane_size(vb, 0) < q_data->size) {
> + pr_err("%s: data will not fit into plane (%lu < %lu)\n",
> + __func__, vb2_plane_size(vb, 0), (long)q_data->size);
> + return -EINVAL;
> + }
> +
> + vb2_set_plane_payload(vb, 0, q_data->size);
> +
> + return 0;
> +}
> +
> +static void jpu_buf_queue(struct vb2_buffer *vb)
> +{
> + struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> +
> + if (ctx->mode == JPU_DECODE &&
> + vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
> + struct jpu_q_data *q_data;
> + struct jpu *jpu = ctx->jpu;
> + unsigned int subsampling, w_out, h_out, w_cap, h_cap;
> + unsigned long src_addr, flags;
> +
> + src_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
> +
> + jpu_reset(jpu->regs);
> +
> + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
> + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> +
> + spin_lock_irqsave(&jpu->slock, flags);
> + jpu->status = JPU_BUSY;
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> +
> + iowrite32(INT(3), jpu->regs + JINTE);
> + iowrite32(src_addr, jpu->regs + JIFDSA1);
> + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> +
> + if (wait_event_interruptible_timeout(jpu->wq,
> + jpu->status != JPU_BUSY,
> + msecs_to_jiffies(100)) > 0
> + && jpu->status == JPU_OK)
> + ctx->hdr_parsed = true;
> +
> + w_out = ioread32(jpu->regs + JCHSZU) << 8 |
> + ioread32(jpu->regs + JCHSZD);
> +
> + h_out = ioread32(jpu->regs + JCVSZU) << 8 |
> + ioread32(jpu->regs + JCVSZD);
> +
> + w_cap = ioread32(jpu->regs + JIFDDHSZ);
> + h_cap = ioread32(jpu->regs + JIFDDVSZ);
> +
> + switch (ioread32(jpu->regs + JCMOD) & JCMOD_REDU) {
> + case JCMOD_REDU_422:
> + subsampling = V4L2_PIX_FMT_NV16;
> + break;
> + case JCMOD_REDU_420:
> + subsampling = V4L2_PIX_FMT_NV12;
> + break;
> + default:
> + subsampling = 0;
> + }
> +
> + if (!ctx->hdr_parsed || !subsampling || w_out > JPU_WIDTH_MAX ||
> + w_out < JPU_WIDTH_MIN || h_out > JPU_HEIGHT_MAX ||
> + h_out < JPU_HEIGHT_MIN) {
> + pr_err("incompatible or corrupted JPEG data\n");
> + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
> + return;
> + }
> +
> + q_data = &ctx->out_q;
> + q_data->w = w_out;
> + q_data->h = h_out;
> +
> + q_data = &ctx->cap_q;
> + q_data->w = w_cap;
> + q_data->h = h_cap;
> +
> + q_data->fmt = jpu_find_format(JPU_DECODE, subsampling,
> + JPU_FMT_TYPE_CAPTURE);
> +
> + q_data->size =
> + (q_data->w * q_data->h * q_data->fmt->depth) >> 3;
> + }
> +
> + if (ctx->fh.m2m_ctx)
> + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
> +}
> +
> +static int jpu_start_streaming(struct vb2_queue *q, unsigned int count)
> +{
> + return 0;
> +}
> +
> +static void jpu_stop_streaming(struct vb2_queue *q)
> +{
> +}
> +
> +static struct vb2_ops jpu_qops = {
> + .queue_setup = jpu_queue_setup,
> + .buf_prepare = jpu_buf_prepare,
> + .buf_queue = jpu_buf_queue,
> + .wait_prepare = vb2_ops_wait_prepare,
> + .wait_finish = vb2_ops_wait_finish,
> + .start_streaming = jpu_start_streaming,
> + .stop_streaming = jpu_stop_streaming,
> +};
> +
> +static int jpu_queue_init(void *priv, struct vb2_queue *src_vq,
> + struct vb2_queue *dst_vq)
> +{
> + struct jpu_ctx *ctx = priv;
> + int ret;
> +
> + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
> + src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
Any reason not to enable DMABUF (here and for the destination queue) ? I'd
like to encourage userspace to move from USERPTR to DMABUF.
> + src_vq->drv_priv = ctx;
> + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + src_vq->ops = &jpu_qops;
> + src_vq->mem_ops = &vb2_dma_contig_memops;
> + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + src_vq->lock = &ctx->jpu->mutex;
> +
> + ret = vb2_queue_init(src_vq);
> + if (ret)
> + return ret;
> +
> + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> + dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
> + dst_vq->drv_priv = ctx;
> + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + dst_vq->ops = &jpu_qops;
> + dst_vq->mem_ops = &vb2_dma_contig_memops;
> + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + dst_vq->lock = &ctx->jpu->mutex;
> +
> + return vb2_queue_init(dst_vq);
> +}
> +
> +/*
> + *
> ===========================================================================
> = + * Device file operations
> + *
> ===========================================================================
> = + */
> +static int jpu_open(struct file *file)
> +{
> + struct jpu *jpu = video_drvdata(file);
> + struct video_device *vfd = video_devdata(file);
> + struct jpu_ctx *ctx;
> + struct jpu_q_data *out_q, *cap_q;
> + int ret = 0;
No need to initialize ret to 0.
> +
> + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> +
> + if (mutex_lock_interruptible(&jpu->mutex)) {
> + ret = -ERESTARTSYS;
> + goto free;
> + }
> +
> + v4l2_fh_init(&ctx->fh, vfd);
> + ctx->fh.ctrl_handler = &ctx->ctrl_handler;
> + file->private_data = &ctx->fh;
> + v4l2_fh_add(&ctx->fh);
> +
> + out_q = &ctx->out_q;
> + cap_q = &ctx->cap_q;
> +
> + out_q->w = JPU_DEFAULT_WIDTH;
> + out_q->h = JPU_DEFAULT_HEIGHT;
> +
> + cap_q->w = JPU_DEFAULT_WIDTH;
> + cap_q->h = JPU_DEFAULT_HEIGHT;
> +
> + ctx->jpu = jpu;
> + if (vfd == jpu->vfd_encoder) {
> + ctx->mode = JPU_ENCODE;
> + out_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
> + JPU_FMT_TYPE_OUTPUT);
> + cap_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
> + JPU_FMT_TYPE_CAPTURE);
> + out_q->size = (out_q->w * out_q->h * out_q->fmt->depth) >> 3;
> + cap_q->size = PAGE_SIZE;
> + } else {
> + ctx->mode = JPU_DECODE;
> + out_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_JPEG,
> + JPU_FMT_TYPE_OUTPUT);
> + cap_q->fmt = jpu_find_format(ctx->mode, V4L2_PIX_FMT_NV16,
> + JPU_FMT_TYPE_CAPTURE);
> + out_q->size = PAGE_SIZE;
> + cap_q->size = (cap_q->w * cap_q->h * cap_q->fmt->depth) >> 3;
> + }
> +
> + out_q->default_fmt = out_q->fmt;
> + cap_q->default_fmt = cap_q->fmt;
> +
> + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpu->m2m_dev, ctx, jpu_queue_init);
> + if (IS_ERR(ctx->fh.m2m_ctx)) {
> + ret = PTR_ERR(ctx->fh.m2m_ctx);
> + goto error;
> + }
> +
> + ret = jpu_controls_create(ctx);
> + if (ret < 0)
> + goto error;
> +
> + if (jpu->ref_count == 0) {
> + ret = clk_prepare_enable(jpu->clk);
> + if (ret < 0)
> + goto error;
> + }
> +
> + jpu->ref_count++;
> +
> + mutex_unlock(&jpu->mutex);
> + return 0;
> +
> +error:
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + mutex_unlock(&jpu->mutex);
> +free:
> + kfree(ctx);
> + return ret;
> +}
> +
> +static int jpu_release(struct file *file)
> +{
> + struct jpu *jpu = video_drvdata(file);
> + struct jpu_ctx *ctx = fh_to_ctx(file->private_data);
> +
> + mutex_lock(&jpu->mutex);
> + if (--jpu->ref_count == 0)
> + clk_disable_unprepare(jpu->clk);
> + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> + v4l2_ctrl_handler_free(&ctx->ctrl_handler);
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + kfree(ctx);
> + mutex_unlock(&jpu->mutex);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_file_operations jpu_fops = {
> + .owner = THIS_MODULE,
> + .open = jpu_open,
> + .release = jpu_release,
> + .unlocked_ioctl = video_ioctl2,
> + .poll = v4l2_m2m_fop_poll,
> + .mmap = v4l2_m2m_fop_mmap,
> +};
> +
> +/*
> + *
> ===========================================================================
> = + * mem2mem callbacks
> + *
> ===========================================================================
> = + */
> +static void jpu_device_run(void *priv)
> +{
> + struct jpu_ctx *ctx = priv;
> + struct jpu *jpu = ctx->jpu;
> + struct vb2_buffer *src_buf, *dst_buf;
> + unsigned long src_addr, dst_addr, flags;
> + void *dst_vaddr;
> + unsigned int w, h;
> +
> + spin_lock_irqsave(&ctx->jpu->slock, flags);
Can this function be called from a context where interrupts are disabled ? If
not spin_lock_irq is enough.
> +
> + src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> + dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> + src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
> + dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
> + dst_vaddr = vb2_plane_vaddr(dst_buf, 0);
> +
> + jpu_reset(jpu->regs);
> +
> + if (ctx->mode == JPU_ENCODE) {
> + unsigned int redu, inft;
> +
> + w = ctx->out_q.w;
> + h = ctx->out_q.h;
> +
> + jpu_generate_hdr(&ctx->out_q, ctx->compr_quality, dst_vaddr);
> +
> + if (ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_NV12) {
> + redu = JCMOD_REDU_420;
> + inft = JIFECNT_INFT_420;
> + } else {
> + redu = JCMOD_REDU_422;
> + inft = JIFECNT_INFT_422;
> + }
> +
> + /* the only no marker mode works for encoding */
> + iowrite32(JCMOD_DSP_ENC | JCMOD_PCTR | redu | JCMOD_SOI_ENABLE |
> + JCMOD_MSKIP_ENABLE, jpu->regs + JCMOD);
> +
> + iowrite32(JIFECNT_SWAP_WB | inft, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> + iowrite32(INT(10), jpu->regs + JINTE);
> +
> + /* Y and C components source addresses */
> + iowrite32(src_addr, jpu->regs + JIFESYA1);
> + iowrite32(src_addr + w * h, jpu->regs + JIFESCA1);
> +
> + /* memory width */
> + iowrite32(w, jpu->regs + JIFESMW);
> +
> + iowrite32((w >> 8) & JCSZ_MASK, jpu->regs + JCHSZU);
> + iowrite32(w & JCSZ_MASK, jpu->regs + JCHSZD);
> +
> + iowrite32((h >> 8) & JCSZ_MASK, jpu->regs + JCVSZU);
> + iowrite32(h & JCSZ_MASK, jpu->regs + JCVSZD);
> +
> + iowrite32(w, jpu->regs + JIFESHSZ);
> + iowrite32(h, jpu->regs + JIFESVSZ);
> +
> + iowrite32(dst_addr + JPU_JPEG_HDR_SIZE, jpu->regs + JIFEDA1);
> +
> + iowrite32(0 << JCQTN_SHIFT(1) | 1 << JCQTN_SHIFT(2) |
> + 1 << JCQTN_SHIFT(3), jpu->regs + JCQTN);
> +
> + iowrite32(0 << JCHTN_AC_SHIFT(1) | 0 << JCHTN_DC_SHIFT(1) |
> + 1 << JCHTN_AC_SHIFT(2) | 1 << JCHTN_DC_SHIFT(2) |
> + 1 << JCHTN_AC_SHIFT(3) | 1 << JCHTN_DC_SHIFT(3),
> + jpu->regs + JCHTN);
> +
> + jpu_set_qtbl(jpu->regs, ctx->compr_quality);
> + jpu_set_htbl(jpu->regs);
> + } else {
> + w = ctx->cap_q.w;
> + h = ctx->cap_q.h;
> +
> + iowrite32(JCMOD_DSP_DEC | JCMOD_PCTR, jpu->regs + JCMOD);
> + iowrite32(JIFECNT_SWAP_WB, jpu->regs + JIFECNT);
> + iowrite32(JIFDCNT_SWAP_WB, jpu->regs + JIFDCNT);
> + iowrite32(INT(10) | INT(7) | INT(6) | INT(5),
> + jpu->regs + JINTE);
> + iowrite32(src_addr, jpu->regs + JIFDSA1);
> + iowrite32(w, jpu->regs + JIFDDMW);
> + iowrite32(dst_addr, jpu->regs + JIFDDYA1);
> + iowrite32(dst_addr + w * h, jpu->regs + JIFDDCA1);
> + }
> +
> + iowrite32(JCCMD_JSRT, jpu->regs + JCCMD);
> + spin_unlock_irqrestore(&ctx->jpu->slock, flags);
> +}
> +
> +static int jpu_job_ready(void *priv)
> +{
> + struct jpu_ctx *ctx = priv;
> +
> + if (ctx->mode == JPU_DECODE)
> + return ctx->hdr_parsed;
> + return 1;
> +}
> +
> +static void jpu_job_abort(void *priv)
> +{
> +}
> +
> +static struct v4l2_m2m_ops jpu_m2m_ops = {
> + .device_run = jpu_device_run,
> + .job_ready = jpu_job_ready,
> + .job_abort = jpu_job_abort,
> +};
> +
> +/*
> + *
> ===========================================================================
> = + * IRQ handler
> + *
> ===========================================================================
> = + */
> +static irqreturn_t jpu_irq_handler(int irq, void *dev_id)
> +{
> + struct jpu *jpu = dev_id;
> + struct jpu_ctx *curr_ctx;
> + struct vb2_buffer *src_buf, *dst_buf;
> + unsigned long payload_size = 0;
> + unsigned int int_status;
> + unsigned int error;
> +
> + spin_lock(&jpu->slock);
> +
> + int_status = ioread32(jpu->regs + JINTS);
> + jpu_int_clear(jpu->regs, int_status);
> +
> + /*
> + * In any mode (decoding/encoding) we can additionaly get
> + * error status (5th bit)
> + * jpu operation complete status (6th bit)
> + */
> + if (!((ioread32(jpu->regs + JINTE) | INT(5) | INT(6)) & int_status)) {
Could you create macros for the interrupt status bits instead of hardcoding
them ?
> + spin_unlock(&jpu->slock);
> + return IRQ_NONE;
> + }
> +
> + if (jpu->status == JPU_BUSY) {
> + if (int_status & INT(3))
> + jpu->status = JPU_OK;
> + if (int_status & INT(5))
> + jpu->status = JPU_ERR;
> + wake_up_interruptible(&jpu->wq);
> + goto handled;
> + }
> +
> + if ((int_status & INT(6)) && !(int_status & INT(10)))
> + goto handled;
> +
> + curr_ctx = v4l2_m2m_get_curr_priv(jpu->m2m_dev);
> +
> + src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
> + dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
> +
> + if (int_status & INT(10)) {
> + if (curr_ctx->mode == JPU_ENCODE) {
> + payload_size = ioread32(jpu->regs + JCDTCU) << 16 |
> + ioread32(jpu->regs + JCDTCM) << 8 |
> + ioread32(jpu->regs + JCDTCD);
> + vb2_set_plane_payload(dst_buf, 0,
> + payload_size + JPU_JPEG_HDR_SIZE);
> + }
> + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
> + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
> + } else if (int_status & INT(5)) {
> + error = ioread32(jpu->regs + JCDERR);
> + dev_err(jpu->dev, "error 0x%X\n", error);
> + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
> + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
> + }
> +
> + v4l2_m2m_job_finish(jpu->m2m_dev, curr_ctx->fh.m2m_ctx);
> +
> +handled:
> + spin_unlock(&jpu->slock);
> + return IRQ_HANDLED;
> +}
> +
> +/*
> + *
> ===========================================================================
> = + * Driver basic infrastructure
> + *
> ===========================================================================
> = + */
> +static const struct of_device_id jpu_dt_ids[] = {
> + { .compatible = "renesas,jpu-r8a7790" },
> + { .compatible = "renesas,jpu-r8a7791" },
> + { .compatible = "renesas,jpu-gen2" },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, jpu_dt_ids);
> +
> +static int jpu_probe(struct platform_device *pdev)
> +{
> + struct jpu *jpu;
> + struct resource *res;
> + int ret;
> +
> + jpu = devm_kzalloc(&pdev->dev, sizeof(struct jpu), GFP_KERNEL);
> + if (!jpu)
> + return -ENOMEM;
> +
> + mutex_init(&jpu->mutex);
> + spin_lock_init(&jpu->slock);
> + jpu->dev = &pdev->dev;
> +
> + /* memory-mapped registers */
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + jpu->regs = devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(jpu->regs))
> + return PTR_ERR(jpu->regs);
> +
> + /* interrupt service routine registration */
> + jpu->irq = ret = platform_get_irq(pdev, 0);
> + if (ret < 0) {
> + dev_err(&pdev->dev, "cannot find IRQ\n");
> + return ret;
> + }
> +
> + ret = devm_request_irq(&pdev->dev, jpu->irq, jpu_irq_handler, 0,
> + dev_name(&pdev->dev), jpu);
> + if (ret) {
> + dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpu->irq);
> + return ret;
> + }
> +
> + /* clocks */
> + jpu->clk = devm_clk_get(&pdev->dev, NULL);
> + if (IS_ERR(jpu->clk)) {
> + dev_err(&pdev->dev, "cannot get clock\n");
> + ret = PTR_ERR(jpu->clk);
> + return ret;
> + }
> +
> + /* v4l2 device */
> + ret = v4l2_device_register(&pdev->dev, &jpu->v4l2_dev);
> + if (ret) {
> + dev_err(&pdev->dev, "Failed to register v4l2 device\n");
> + goto clk_get_rollback;
> + }
> +
> + /* mem2mem device */
> + jpu->m2m_dev = v4l2_m2m_init(&jpu_m2m_ops);
> + if (IS_ERR(jpu->m2m_dev)) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to init mem2mem device\n");
> + ret = PTR_ERR(jpu->m2m_dev);
> + goto device_register_rollback;
> + }
> +
> + jpu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
> + if (IS_ERR(jpu->alloc_ctx)) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to init memory allocator\n");
> + ret = PTR_ERR(jpu->alloc_ctx);
> + goto m2m_init_rollback;
> + }
> +
> + /* JPEG encoder /dev/videoX node */
> + jpu->vfd_encoder = video_device_alloc();
> + if (!jpu->vfd_encoder) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
> + ret = -ENOMEM;
> + goto vb2_allocator_rollback;
> + }
> + strlcpy(jpu->vfd_encoder->name, JPU_M2M_NAME,
> + sizeof(jpu->vfd_encoder->name));
> + jpu->vfd_encoder->fops = &jpu_fops;
> + jpu->vfd_encoder->ioctl_ops = &jpu_ioctl_ops;
> + jpu->vfd_encoder->minor = -1;
> + jpu->vfd_encoder->release = video_device_release;
> + jpu->vfd_encoder->lock = &jpu->mutex;
> + jpu->vfd_encoder->v4l2_dev = &jpu->v4l2_dev;
> + jpu->vfd_encoder->vfl_dir = VFL_DIR_M2M;
> +
> + ret = video_register_device(jpu->vfd_encoder, VFL_TYPE_GRABBER, -1);
> + if (ret) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
> + goto enc_vdev_alloc_rollback;
> + }
> +
> + video_set_drvdata(jpu->vfd_encoder, jpu);
> + v4l2_info(&jpu->v4l2_dev, "encoder device registered as /dev/video%d\n",
> + jpu->vfd_encoder->num);
> +
> + /* JPEG decoder /dev/videoX node */
> + jpu->vfd_decoder = video_device_alloc();
> + if (!jpu->vfd_decoder) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to allocate video device\n");
> + ret = -ENOMEM;
> + goto enc_vdev_register_rollback;
> + }
> + strlcpy(jpu->vfd_decoder->name, JPU_M2M_NAME,
> + sizeof(jpu->vfd_decoder->name));
> + jpu->vfd_decoder->fops = &jpu_fops;
> + jpu->vfd_decoder->ioctl_ops = &jpu_ioctl_ops;
> + jpu->vfd_decoder->minor = -1;
> + jpu->vfd_decoder->release = video_device_release;
> + jpu->vfd_decoder->lock = &jpu->mutex;
> + jpu->vfd_decoder->v4l2_dev = &jpu->v4l2_dev;
> + jpu->vfd_decoder->vfl_dir = VFL_DIR_M2M;
> +
> + ret = video_register_device(jpu->vfd_decoder, VFL_TYPE_GRABBER, -1);
> + if (ret) {
> + v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
> + goto dec_vdev_alloc_rollback;
> + }
> +
> + video_set_drvdata(jpu->vfd_decoder, jpu);
> + v4l2_info(&jpu->v4l2_dev, "decoder device registered as /dev/video%d\n",
> + jpu->vfd_decoder->num);
> +
> + /* final statements & power management */
> + platform_set_drvdata(pdev, jpu);
> +
> + init_waitqueue_head(&jpu->wq);
> +
> + v4l2_info(&jpu->v4l2_dev, "Renesas JPEG codec\n");
> +
> + return 0;
> +
> +dec_vdev_alloc_rollback:
> + video_device_release(jpu->vfd_decoder);
> +
> +enc_vdev_register_rollback:
> + video_unregister_device(jpu->vfd_encoder);
> +
> +enc_vdev_alloc_rollback:
> + video_device_release(jpu->vfd_encoder);
> +
> +vb2_allocator_rollback:
> + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> +
> +m2m_init_rollback:
> + v4l2_m2m_release(jpu->m2m_dev);
> +
> +device_register_rollback:
> + v4l2_device_unregister(&jpu->v4l2_dev);
> +
> +clk_get_rollback:
> + clk_disable_unprepare(jpu->clk);
I don't think this last call is needed.
> +
> + return ret;
> +}
> +
> +static int jpu_remove(struct platform_device *pdev)
> +{
> + struct jpu *jpu = platform_get_drvdata(pdev);
> +
> + video_unregister_device(jpu->vfd_decoder);
> + video_device_release(jpu->vfd_decoder);
> + video_unregister_device(jpu->vfd_encoder);
> + video_device_release(jpu->vfd_encoder);
> + vb2_dma_contig_cleanup_ctx(jpu->alloc_ctx);
> + v4l2_m2m_release(jpu->m2m_dev);
> + v4l2_device_unregister(&jpu->v4l2_dev);
> + clk_disable_unprepare(jpu->clk);
Neither is this one.
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int jpu_suspend(struct device *dev)
> +{
> + struct jpu *jpu = dev_get_drvdata(dev);
> +
> + if (jpu->ref_count == 0)
> + return 0;
> +
> + clk_disable_unprepare(jpu->clk);
> +
> + return 0;
> +}
> +
> +static int jpu_resume(struct device *dev)
> +{
> + struct jpu *jpu = dev_get_drvdata(dev);
> +
> + if (jpu->ref_count)
Shouldn't this be ref_count == 0 ?
> + return 0;
> +
> + clk_prepare_enable(jpu->clk);
> +
> + return 0;
> +}
> +#endif
> +
> +static const struct dev_pm_ops jpu_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(jpu_suspend, jpu_resume)
> +};
> +
> +static struct platform_driver jpu_driver = {
> + .probe = jpu_probe,
> + .remove = jpu_remove,
> + .driver = {
> + .of_match_table = jpu_dt_ids,
> + .owner = THIS_MODULE,
> + .name = JPU_M2M_NAME,
> + .pm = &jpu_pm_ops,
> + },
> +};
> +
> +module_platform_driver(jpu_driver);
> +
> +MODULE_ALIAS("jpu");
> +MODULE_AUTHOR("Mikhail Ulianov <mikhail.ulyanov@cogentembedded.com>");
> +MODULE_DESCRIPTION("Renesas JPEG codec driver");
> +MODULE_LICENSE("GPL v2");
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 78+ messages in thread
* Re: [PATCH 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
2014-08-19 12:50 ` Mikhail Ulyanov
@ 2014-09-23 14:02 ` Geert Uytterhoeven
-1 siblings, 0 replies; 78+ messages in thread
From: Geert Uytterhoeven @ 2014-09-23 14:02 UTC (permalink / raw)
To: Mikhail Ulyanov
Cc: Mauro Carvalho Chehab, Simon Horman, Magnus Damm, Rob Herring,
Pawel Moll, Mark Rutland, Laurent Pinchart, Linux-sh list,
Linux Media Mailing List, devicetree
On Tue, Aug 19, 2014 at 2:50 PM, Mikhail Ulyanov
<mikhail.ulyanov@cogentembedded.com> wrote:
> +static void put_short_be(unsigned long *p, u16 v)
> +{
> + u16 *addr = (u16 *)*p;
> +
> + *addr = cpu_to_be16(v);
> + *p += 2;
> +}
> +
> +static void put_word_be(unsigned long *p, u32 v)
> +{
> + u32 *addr = (u32 *)*p;
> +
> + *addr = cpu_to_be32(v);
> + *p += 4;
> +}
Is the address in *p guaranteed to be aligned to 2 resp. 4 bytes?
If not, you can use put_unaligned*().
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 78+ messages in thread* Re: [PATCH 1/6] V4L2: Add Renesas R-Car JPEG codec driver.
@ 2014-09-23 14:02 ` Geert Uytterhoeven
0 siblings, 0 replies; 78+ messages in thread
From: Geert Uytterhoeven @ 2014-09-23 14:02 UTC (permalink / raw)
To: Mikhail Ulyanov
Cc: Mauro Carvalho Chehab, Simon Horman, Magnus Damm, Rob Herring,
Pawel Moll, Mark Rutland, Laurent Pinchart, Linux-sh list,
Linux Media Mailing List, devicetree
On Tue, Aug 19, 2014 at 2:50 PM, Mikhail Ulyanov
<mikhail.ulyanov@cogentembedded.com> wrote:
> +static void put_short_be(unsigned long *p, u16 v)
> +{
> + u16 *addr = (u16 *)*p;
> +
> + *addr = cpu_to_be16(v);
> + *p += 2;
> +}
> +
> +static void put_word_be(unsigned long *p, u32 v)
> +{
> + u32 *addr = (u32 *)*p;
> +
> + *addr = cpu_to_be32(v);
> + *p += 4;
> +}
Is the address in *p guaranteed to be aligned to 2 resp. 4 bytes?
If not, you can use put_unaligned*().
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 78+ messages in thread