* Re: [PATCH v2 2/3] media: rockchip: Introduce driver for Rockhip's camera interface
2020-05-29 13:04 ` [PATCH v2 2/3] media: rockchip: Introduce driver for Rockhip's camera interface Maxime Chevallier
@ 2020-05-31 4:39 ` kbuild test robot
2020-05-31 12:16 ` kbuild test robot
` (2 subsequent siblings)
3 siblings, 0 replies; 13+ messages in thread
From: kbuild test robot @ 2020-05-31 4:39 UTC (permalink / raw)
To: Maxime Chevallier, Mauro Carvalho Chehab, Robin Murphy,
Rob Herring, Mark Rutland, Heiko Stuebner, Hans Verkuil
Cc: kbuild-all, linux-media, Maxime Chevallier, devicetree, linux-arm-kernel
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Hi Maxime,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on robh/for-next v5.7-rc7 next-20200529]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Maxime-Chevallier/media-rockchip-Introduce-driver-for-the-camera-interface-on-PX30/20200531-081952
base: git://linuxtv.org/media_tree.git master
config: i386-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce (this is a W=1 build):
# save the attached .config to linux build tree
make W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
In file included from drivers/media/platform/rockchip/cif/dev.c:22:
>> drivers/media/platform/rockchip/cif/regs.h:113: warning: "FRAME_END" redefined
113 | #define FRAME_END (0x01 << 0)
|
In file included from arch/x86/include/asm/paravirt.h:18,
from arch/x86/include/asm/spinlock.h:10,
from include/linux/spinlock.h:89,
from include/linux/rwsem.h:16,
from include/linux/notifier.h:15,
from include/linux/clk.h:14,
from drivers/media/platform/rockchip/cif/dev.c:8:
arch/x86/include/asm/frame.h:60: note: this is the location of the previous definition
60 | #define FRAME_END "pop %" _ASM_BP "n"
|
In file included from include/media/v4l2-subdev.h:15,
from include/media/v4l2-device.h:13,
from drivers/media/platform/rockchip/cif/dev.h:15,
from drivers/media/platform/rockchip/cif/dev.c:21:
drivers/media/platform/rockchip/cif/dev.c: In function 'rkcif_plat_probe':
include/media/v4l2-common.h:58:32: warning: 'v4l2_dev' may be used uninitialized in this function [-Wmaybe-uninitialized]
58 | printk(level "%s: " fmt, (dev)->name , ## arg)
| ^~
drivers/media/platform/rockchip/cif/dev.c:216:22: note: 'v4l2_dev' was declared here
216 | struct v4l2_device *v4l2_dev;
| ^~~~~~~~
--
In file included from drivers/media/platform/rockchip/cif/capture.c:22:
>> drivers/media/platform/rockchip/cif/regs.h:113: warning: "FRAME_END" redefined
113 | #define FRAME_END (0x01 << 0)
|
In file included from arch/x86/include/asm/paravirt.h:18,
from arch/x86/include/asm/spinlock.h:10,
from include/linux/spinlock.h:89,
from include/linux/wait.h:9,
from include/linux/pid.h:6,
from include/linux/sched.h:14,
from include/linux/ratelimit.h:6,
from include/linux/dev_printk.h:16,
from include/linux/device.h:15,
from include/linux/pm_runtime.h:11,
from drivers/media/platform/rockchip/cif/capture.c:10:
arch/x86/include/asm/frame.h:60: note: this is the location of the previous definition
60 | #define FRAME_END "pop %" _ASM_BP "n"
|
vim +/FRAME_END +113 drivers/media/platform/rockchip/cif/regs.h
110
111 /* CIF INTSTAT */
112 #define INTSTAT_CLS (0x3FF)
> 113 #define FRAME_END (0x01 << 0)
114 #define LINE_ERR (0x01 << 2)
115 #define PST_INF_FRAME_END (0x01 << 9)
116 #define FRAME_END_CLR (0x01 << 0)
117 #define LINE_ERR_CLR (0x01 << 2)
118 #define PST_INF_FRAME_END_CLR (0x01 << 9)
119 #define INTSTAT_ERR (0xFC)
120
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH v2 2/3] media: rockchip: Introduce driver for Rockhip's camera interface
2020-05-29 13:04 ` [PATCH v2 2/3] media: rockchip: Introduce driver for Rockhip's camera interface Maxime Chevallier
2020-05-31 4:39 ` kbuild test robot
@ 2020-05-31 12:16 ` kbuild test robot
2020-05-31 13:40 ` Ezequiel Garcia
2020-07-09 18:06 ` Dafna Hirschfeld
3 siblings, 0 replies; 13+ messages in thread
From: kbuild test robot @ 2020-05-31 12:16 UTC (permalink / raw)
To: Maxime Chevallier, Mauro Carvalho Chehab, Robin Murphy,
Rob Herring, Mark Rutland, Heiko Stuebner, Hans Verkuil
Cc: kbuild-all, clang-built-linux, linux-media, Maxime Chevallier,
devicetree, linux-arm-kernel
[-- Attachment #1: Type: text/plain, Size: 3247 bytes --]
Hi Maxime,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on rockchip/for-next robh/for-next v5.7-rc7 next-20200529]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Maxime-Chevallier/media-rockchip-Introduce-driver-for-the-camera-interface-on-PX30/20200531-081952
base: git://linuxtv.org/media_tree.git master
config: x86_64-allyesconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2388a096e7865c043e83ece4e26654bd3d1a20d5)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
In file included from drivers/media/platform/rockchip/cif/dev.c:22:
>> drivers/media/platform/rockchip/cif/regs.h:113:9: warning: 'FRAME_END' macro redefined [-Wmacro-redefined]
#define FRAME_END (0x01 << 0)
^
arch/x86/include/asm/frame.h:89:9: note: previous definition is here
#define FRAME_END
^
>> drivers/media/platform/rockchip/cif/dev.c:253:13: warning: variable 'v4l2_dev' is uninitialized when used here [-Wuninitialized]
v4l2_info(v4l2_dev, "No reserved memory region assign to CIFn");
^~~~~~~~
include/media/v4l2-common.h:67:25: note: expanded from macro 'v4l2_info'
v4l2_printk(KERN_INFO, dev, fmt , ## arg)
^~~
include/media/v4l2-common.h:58:28: note: expanded from macro 'v4l2_printk'
printk(level "%s: " fmt, (dev)->name , ## arg)
^~~
drivers/media/platform/rockchip/cif/dev.c:216:30: note: initialize the variable 'v4l2_dev' to silence this warning
struct v4l2_device *v4l2_dev;
^
= NULL
2 warnings generated.
--
In file included from drivers/media/platform/rockchip/cif/capture.c:22:
>> drivers/media/platform/rockchip/cif/regs.h:113:9: warning: 'FRAME_END' macro redefined [-Wmacro-redefined]
#define FRAME_END (0x01 << 0)
^
arch/x86/include/asm/frame.h:89:9: note: previous definition is here
#define FRAME_END
^
1 warning generated.
vim +/FRAME_END +113 drivers/media/platform/rockchip/cif/regs.h
110
111 /* CIF INTSTAT */
112 #define INTSTAT_CLS (0x3FF)
> 113 #define FRAME_END (0x01 << 0)
114 #define LINE_ERR (0x01 << 2)
115 #define PST_INF_FRAME_END (0x01 << 9)
116 #define FRAME_END_CLR (0x01 << 0)
117 #define LINE_ERR_CLR (0x01 << 2)
118 #define PST_INF_FRAME_END_CLR (0x01 << 9)
119 #define INTSTAT_ERR (0xFC)
120
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH v2 2/3] media: rockchip: Introduce driver for Rockhip's camera interface
2020-05-29 13:04 ` [PATCH v2 2/3] media: rockchip: Introduce driver for Rockhip's camera interface Maxime Chevallier
2020-05-31 4:39 ` kbuild test robot
2020-05-31 12:16 ` kbuild test robot
@ 2020-05-31 13:40 ` Ezequiel Garcia
2020-07-09 7:35 ` Maxime Chevallier
2020-07-09 18:06 ` Dafna Hirschfeld
3 siblings, 1 reply; 13+ messages in thread
From: Ezequiel Garcia @ 2020-05-31 13:40 UTC (permalink / raw)
To: Maxime Chevallier
Cc: Mauro Carvalho Chehab, Robin Murphy, Rob Herring, Mark Rutland,
Heiko Stuebner, Hans Verkuil, devicetree,
Linux Kernel Mailing List, Paul Kocialkowski,
open list:ARM/Rockchip SoC...,
Thomas Petazzoni, Miquel Raynal, linux-arm-kernel, linux-media
Hi Maxime,
Thanks for posting this patch. I think you can still improve it,
but it's a neat first try! :-)
On Fri, 29 May 2020 at 10:05, Maxime Chevallier
<maxime.chevallier@bootlin.com> wrote:
>
> Introduce a driver for the camera interface on some Rockchip platforms.
>
> This controller supports CSI2, Parallel and BT656 interfaces, but for
> now only the parallel interface could be tested, hence it's the only one
> that's supported in the first version of this driver.
>
I'm confused, you mention parallel as the only tested interface,
but the cover letters mentions PAL. Doesn't PAL mean BT.656
or am I completely lost?
(I am not super familiar with parallel sensors).
> This controller can be fond on PX30, RK1808, RK3128, RK3288 and RK3288,
> but for now it's only be tested on PX30.
>
My RK3288 and RK3326 (i.e. PX30) refer to this IP block as "Video
Input interface".
I am wondering if it won't be clearer for developers / users if we
rename the driver
to rockchip-vip (and of course s/cif/vip and s/CIF/VIP).
> Most of this driver was written follwing the BSP driver from rockchip,
> removing the parts that either didn't fit correctly the guidelines, or
> that couldn't be tested.
>
> This basic version doesn't support cropping nor scaling, and is only
> designed with one sensor being attached to it a any time.
>
> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
> ---
>
> Changes since V1 :
>
> - Convert to the bulk APIs for clocks and resets
Note that the bulk API clock conversion was not
properly done.
> - remove useless references to priv data
> - Move around some init functions at probe time
> - Upate some helpers to more suitable ones
>
> Here is the output from v4l2-compliance. There are no fails in the final
> summary, but there is one in the output that I didn't catch previously.
>
> Still, here's the V2 in the meantime, if you have any further reviews
> ompliance SHA: not available, 64 bits
>
> Compliance test for rkcif device /dev/video0:
>
> Driver Info:
> Driver name : rkcif
> Card type : rkcif
> Bus info : platform:ff490000.cif
> Driver version : 5.7.0
> Capabilities : 0x84201000
> Video Capture Multiplanar
> Streaming
> Extended Pix Format
> Device Capabilities
> Device Caps : 0x04201000
> Video Capture Multiplanar
> Streaming
> Extended Pix Format
> Media Driver Info:
> Driver name : rkcif
> Model : rkcif
> Serial :
> Bus info :
> Media version : 5.7.0
> Hardware revision: 0x00000000 (0)
> Driver version : 5.7.0
> Interface Info:
> ID : 0x03000002
> Type : V4L Video
> Entity Info:
> ID : 0x00000001 (1)
> Name : video_rkcif
> Function : V4L2 I/O
> Pad 0x01000004 : 0: Sink
> Link 0x02000007: from remote pad 0x1000006 of entity 'tw9900 2-0044': Data, Enabled
>
> Required ioctls:
> test MC information (see 'Media Driver Info' above): OK
> test VIDIOC_QUERYCAP: OK
>
> Allow for multiple opens:
> test second /dev/video0 open: OK
> test VIDIOC_QUERYCAP: OK
> test VIDIOC_G/S_PRIORITY: OK
> test for unlimited opens: OK
>
> Debug ioctls:
> test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
> test VIDIOC_LOG_STATUS: OK (Not Supported)
>
> Input ioctls:
> test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
> test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
> test VIDIOC_ENUMAUDIO: OK (Not Supported)
> test VIDIOC_G/S/ENUMINPUT: OK
> test VIDIOC_G/S_AUDIO: OK (Not Supported)
> Inputs: 1 Audio Inputs: 0 Tuners: 0
>
> Output ioctls:
> test VIDIOC_G/S_MODULATOR: OK (Not Supported)
> test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> test VIDIOC_ENUMAUDOUT: OK (Not Supported)
> test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
> test VIDIOC_G/S_AUDOUT: OK (Not Supported)
> Outputs: 0 Audio Outputs: 0 Modulators: 0
>
> Input/Output configuration ioctls:
> test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
> test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
> test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
> test VIDIOC_G/S_EDID: OK (Not Supported)
>
> Control ioctls (Input 0):
> test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> test VIDIOC_QUERYCTRL: OK
> test VIDIOC_G/S_CTRL: OK
> test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK (Not Supported)
> test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> Standard Controls: 0 Private Controls: 0
>
> Format ioctls (Input 0):
> test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> test VIDIOC_G/S_PARM: OK (Not Supported)
> test VIDIOC_G_FBUF: OK (Not Supported)
> test VIDIOC_G_FMT: OK
> test VIDIOC_TRY_FMT: OK
> test VIDIOC_S_FMT: OK
> test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> test Cropping: OK (Not Supported)
> test Composing: OK (Not Supported)
> fail: v4l2-test-formats.cpp(1772): node->can_scale && node->frmsizes_count[v4l_format_g_pixelformat(&cur)]
> test Scaling: OK
>
> Codec ioctls (Input 0):
> test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
>
> Buffer ioctls (Input 0):
> test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> test VIDIOC_EXPBUF: OK
> test Requests: OK (Not Supported)
>
> Total for rkcif device /dev/video0: 45, Succeeded: 45, Failed: 0, Warnings: 0
>
> drivers/media/platform/Kconfig | 13 +
> drivers/media/platform/Makefile | 1 +
> drivers/media/platform/rockchip/cif/Makefile | 3 +
> drivers/media/platform/rockchip/cif/capture.c | 1170 +++++++++++++++++
> drivers/media/platform/rockchip/cif/dev.c | 358 +++++
> drivers/media/platform/rockchip/cif/dev.h | 213 +++
> drivers/media/platform/rockchip/cif/regs.h | 256 ++++
> 7 files changed, 2014 insertions(+)
> create mode 100644 drivers/media/platform/rockchip/cif/Makefile
> create mode 100644 drivers/media/platform/rockchip/cif/capture.c
> create mode 100644 drivers/media/platform/rockchip/cif/dev.c
> create mode 100644 drivers/media/platform/rockchip/cif/dev.h
> create mode 100644 drivers/media/platform/rockchip/cif/regs.h
>
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index e01bbb9dd1c1..d4ec5e36bca7 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -460,6 +460,19 @@ config VIDEO_ROCKCHIP_RGA
>
> To compile this driver as a module choose m here.
>
> +config VIDEO_ROCKCHIP_CIF
> + tristate "Rockchip Camera Interface"
> + depends on VIDEO_DEV && VIDEO_V4L2
> + depends on ARCH_ROCKCHIP || COMPILE_TEST
> + select VIDEOBUF2_DMA_SG
> + select VIDEOBUF2_DMA_CONTIG
> + select V4L2_FWNODE
> + select V4L2_MEM2MEM_DEV
> + help
> + This is a v4l2 driver for Rockchip SOC Camera interface.
> +
> + To compile this driver as a module choose m here.
> +
> config VIDEO_TI_VPE
> tristate "TI VPE (Video Processing Engine) driver"
> depends on VIDEO_DEV && VIDEO_V4L2
> diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
> index d13db96e3015..67e7ac034be1 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -68,6 +68,7 @@ obj-$(CONFIG_VIDEO_RENESAS_JPU) += rcar_jpu.o
> obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
>
> obj-$(CONFIG_VIDEO_ROCKCHIP_RGA) += rockchip/rga/
> +obj-$(CONFIG_VIDEO_ROCKCHIP_CIF) += rockchip/cif/
>
> obj-y += omap/
>
> diff --git a/drivers/media/platform/rockchip/cif/Makefile b/drivers/media/platform/rockchip/cif/Makefile
> new file mode 100644
> index 000000000000..727990824316
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/cif/Makefile
> @@ -0,0 +1,3 @@
> +# SPDX-License-Identifier: GPL-2.0
> +obj-$(CONFIG_VIDEO_ROCKCHIP_CIF) += video_rkcif.o
> +video_rkcif-objs += dev.o capture.o
> diff --git a/drivers/media/platform/rockchip/cif/capture.c b/drivers/media/platform/rockchip/cif/capture.c
> new file mode 100644
> index 000000000000..adab6704129f
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/cif/capture.c
> @@ -0,0 +1,1170 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Rockchip CIF Driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + * Copyright (C) 2020 Maxime Chevallier <maxime.chevallier@bootlin.com>
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/reset.h>
> +#include <media/v4l2-common.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fh.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/v4l2-mc.h>
> +#include <media/v4l2-subdev.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +#include "dev.h"
> +#include "regs.h"
> +
> +#define CIF_REQ_BUFS_MIN 1
> +#define CIF_MIN_WIDTH 64
> +#define CIF_MIN_HEIGHT 64
> +#define CIF_MAX_WIDTH 8192
> +#define CIF_MAX_HEIGHT 8192
> +
> +#define RKCIF_PLANE_Y 0
> +#define RKCIF_PLANE_CBCR 1
> +
> +#define CIF_FETCH_Y_LAST_LINE(VAL) ((VAL) & 0x1fff)
> +/* Check if swap y and c in bt1120 mode */
> +#define CIF_FETCH_IS_Y_FIRST(VAL) ((VAL) & 0xf)
> +
> +/* Get xsubs and ysubs for fourcc formats
> + *
> + * @xsubs: horizontal color samples in a 4*4 matrix, for yuv
> + * @ysubs: vertical color samples in a 4*4 matrix, for yuv
> + */
> +static int fcc_xysubs(u32 fcc, u32 *xsubs, u32 *ysubs)
You should avoid doing this math in the driver,
and instead use the nice core helpers
v4l2_fill_pixfmt_mp and v4l2_fill_pixfmt.
> +{
> + switch (fcc) {
> + case V4L2_PIX_FMT_NV16:
> + case V4L2_PIX_FMT_NV61:
> + *xsubs = 2;
> + *ysubs = 1;
> + break;
> + case V4L2_PIX_FMT_NV21:
> + case V4L2_PIX_FMT_NV12:
> + *xsubs = 2;
> + *ysubs = 2;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static const struct cif_output_fmt out_fmts[] = {
> + {
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .cplanes = 2,
> + .mplanes = 1,
Only mplanes = 1 formats are supported, please
drop it here, and drop any handling due to mplanes > 1.
> + .fmt_val = YUV_OUTPUT_422 | UV_STORAGE_ORDER_UVUV,
> + .bpp = { 8, 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_NV61,
> + .fmt_val = YUV_OUTPUT_422 | UV_STORAGE_ORDER_VUVU,
> + .cplanes = 2,
> + .mplanes = 1,
> + .bpp = { 8, 16 },
> + },
> + {
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .fmt_val = YUV_OUTPUT_420 | UV_STORAGE_ORDER_UVUV,
> + .cplanes = 2,
> + .mplanes = 1,
> + .bpp = { 8, 16 },
> + .mbus = MEDIA_BUS_FMT_UYVY8_2X8,
> + },
> + {
> + .fourcc = V4L2_PIX_FMT_NV21,
> + .fmt_val = YUV_OUTPUT_420 | UV_STORAGE_ORDER_VUVU,
> + .cplanes = 2,
> + .mplanes = 1,
> + .bpp = { 8, 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_RGB24,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 24 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_RGB565,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_BGR666,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 18 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SRGGB8,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 8 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGRBG8,
That is odd: how does the driver distinguish
V4L2_PIX_FMT_SGRBG8 from V4L2_PIX_FMT_SRGGB8?
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 8 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGBRG8,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 8 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR8,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 8 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SRGGB10,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGRBG10,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGBRG10,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR10,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SRGGB12,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGRBG12,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGBRG12,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR12,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR16,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_Y16,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }
> +};
> +
> +static const struct cif_input_fmt in_fmts[] = {
> + {
> + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YUYV,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YUYV,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_INTERLACED,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YVYU,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YVYU,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_INTERLACED,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_UYVY,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_UYVY,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_INTERLACED,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_VYUY,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_VYUY,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_INTERLACED,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGBRG8_1X8,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SRGGB8_1X8,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SBGGR10_1X10,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGBRG10_1X10,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SRGGB10_1X10,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SBGGR12_1X12,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGBRG12_1X12,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SRGGB12_1X12,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_RGB888_1X24,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RGB888,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_Y8_1X8,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_Y10_1X10,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_Y12_1X12,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }
> +};
> +
> +static const struct
> +cif_input_fmt *get_input_fmt(struct v4l2_subdev *sd)
> +{
> + struct v4l2_subdev_format fmt;
> + int ret;
> + u32 i;
> +
> + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
> + fmt.pad = 0;
> + ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
> + if (ret < 0) {
> + v4l2_warn(sd->v4l2_dev,
> + "sensor fmt invalid, set to default size\n");
> + goto set_default;
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(in_fmts); i++)
> + if (fmt.format.code == in_fmts[i].mbus_code &&
> + fmt.format.field == in_fmts[i].field)
> + return &in_fmts[i];
> +
> + v4l2_err(sd->v4l2_dev, "remote sensor mbus code not supported\n");
> +
> +set_default:
> + return NULL;
> +}
> +
> + static const struct
Tab is off. Note that Hans already mentioned this on v1.
> +cif_output_fmt *find_output_fmt(struct rkcif_stream *stream, u32 pixelfmt)
> +{
> + const struct cif_output_fmt *fmt;
> + u32 i;
> +
> + for (i = 0; i < ARRAY_SIZE(out_fmts); i++) {
> + fmt = &out_fmts[i];
> + if (fmt->fourcc == pixelfmt)
> + return fmt;
> + }
> +
> + return NULL;
> +}
> +
> +/***************************** stream operations ******************************/
> +static void rkcif_assign_new_buffer_oneframe(struct rkcif_stream *stream)
> +{
> + struct rkcif_dummy_buffer *dummy_buf = &stream->dummy_buf;
> + struct rkcif_device *dev = stream->cifdev;
> + void __iomem *base = dev->base_addr;
> +
> + /* Set up an empty buffer for the next frame */
> + spin_lock(&stream->vbq_lock);
> + if (!list_empty(&stream->buf_head)) {
> + stream->curr_buf = list_first_entry(&stream->buf_head,
> + struct rkcif_buffer, queue);
> + list_del(&stream->curr_buf->queue);
> + } else {
> + stream->curr_buf = NULL;
> + }
> + spin_unlock(&stream->vbq_lock);
> +
> + if (stream->curr_buf) {
> + write_cif_reg(base, CIF_FRM0_ADDR_Y,
> + stream->curr_buf->buff_addr[RKCIF_PLANE_Y]);
> + write_cif_reg(base, CIF_FRM0_ADDR_UV,
> + stream->curr_buf->buff_addr[RKCIF_PLANE_CBCR]);
> + write_cif_reg(base, CIF_FRM1_ADDR_Y,
> + stream->curr_buf->buff_addr[RKCIF_PLANE_Y]);
> + write_cif_reg(base, CIF_FRM1_ADDR_UV,
> + stream->curr_buf->buff_addr[RKCIF_PLANE_CBCR]);
> + } else {
> + write_cif_reg(base, CIF_FRM0_ADDR_Y, dummy_buf->dma_addr);
> + write_cif_reg(base, CIF_FRM0_ADDR_UV, dummy_buf->dma_addr);
> + write_cif_reg(base, CIF_FRM1_ADDR_Y, dummy_buf->dma_addr);
> + write_cif_reg(base, CIF_FRM1_ADDR_UV, dummy_buf->dma_addr);
Frame 0 and 1 would seem to indicate you can do better
by implementing some double buffering. Have you tried that?
> + }
> +}
> +
> +static void rkcif_stream_stop(struct rkcif_stream *stream)
> +{
> + struct rkcif_device *cif_dev = stream->cifdev;
> + void __iomem *base = cif_dev->base_addr;
> + u32 val;
> +
> + val = read_cif_reg(base, CIF_CTRL);
> + write_cif_reg(base, CIF_CTRL, val & (~ENABLE_CAPTURE));
> + write_cif_reg(base, CIF_INTEN, 0x0);
> + write_cif_reg(base, CIF_INTSTAT, 0x3ff);
> + write_cif_reg(base, CIF_FRAME_STATUS, 0x0);
> +
> + stream->state = RKCIF_STATE_READY;
> +}
> +
> +static int rkcif_queue_setup(struct vb2_queue *queue,
> + unsigned int *num_buffers,
> + unsigned int *num_planes,
> + unsigned int sizes[],
> + struct device *alloc_devs[])
> +{
> + struct rkcif_stream *stream = queue->drv_priv;
> + const struct v4l2_pix_format_mplane *pixm;
> + const struct cif_output_fmt *cif_fmt;
> + u32 i;
> +
Better to use u32 for variables that really need a fixed width,
and so use e.g. unsigned int here.
> + pixm = &stream->pixm;
> + cif_fmt = stream->cif_fmt_out;
> +
> + if (*num_planes) {
> + if (*num_planes != cif_fmt->mplanes)
> + return -EINVAL;
> +
> + for (i = 0; i < cif_fmt->mplanes; i++)
> + if (sizes[i] < pixm->plane_fmt[i].sizeimage)
> + return -EINVAL;
> + return 0;
> + }
> +
> + *num_planes = cif_fmt->mplanes;
> +
> + for (i = 0; i < cif_fmt->mplanes; i++) {
> + const struct v4l2_plane_pix_format *plane_fmt;
> +
> + plane_fmt = &pixm->plane_fmt[i];
> + sizes[i] = plane_fmt->sizeimage;
> + }
> +
> + return 0;
> +}
> +
> +/*
> + * The vb2_buffer are stored in rkcif_buffer, in order to unify
> + * mplane buffer and none-mplane buffer.
> + */
> +static void rkcif_buf_queue(struct vb2_buffer *vb)
> +{
> + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct rkcif_buffer *cifbuf = to_rkcif_buffer(vbuf);
> + struct vb2_queue *queue = vb->vb2_queue;
> + struct rkcif_stream *stream = queue->drv_priv;
> + struct v4l2_pix_format_mplane *pixm = &stream->pixm;
> + const struct cif_output_fmt *fmt = stream->cif_fmt_out;
> + unsigned long lock_flags = 0;
> + int i;
> +
> + memset(cifbuf->buff_addr, 0, sizeof(cifbuf->buff_addr));
> + /* If mplanes > 1, every c-plane has its own m-plane,
> + * otherwise, multiple c-planes are in the same m-plane
> + */
> + for (i = 0; i < fmt->mplanes; i++)
> + cifbuf->buff_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
> +
> + if (fmt->mplanes == 1) {
> + for (i = 0; i < fmt->cplanes - 1; i++)
> + cifbuf->buff_addr[i + 1] = cifbuf->buff_addr[i] +
> + pixm->plane_fmt[i].bytesperline * pixm->height;
> + }
> +
> + spin_lock_irqsave(&stream->vbq_lock, lock_flags);
> + list_add_tail(&cifbuf->queue, &stream->buf_head);
> + spin_unlock_irqrestore(&stream->vbq_lock, lock_flags);
> +}
> +
> +static int rkcif_create_dummy_buf(struct rkcif_stream *stream)
> +{
As Hans pointed out, dummy buffer needs some explanation
and details.
> + struct rkcif_dummy_buffer *dummy_buf = &stream->dummy_buf;
> + struct rkcif_device *dev = stream->cifdev;
> +
> + /* get a maximum plane size */
> + dummy_buf->size = max3(stream->pixm.plane_fmt[0].bytesperline *
> + stream->pixm.height,
> + stream->pixm.plane_fmt[1].sizeimage,
> + stream->pixm.plane_fmt[2].sizeimage);
> +
> + dummy_buf->vaddr = dma_alloc_coherent(dev->dev, dummy_buf->size,
> + &dummy_buf->dma_addr,
> + GFP_KERNEL);
> + if (!dummy_buf->vaddr) {
> + v4l2_err(&dev->v4l2_dev,
> + "Failed to allocate the memory for dummy buffer\n");
> + return -ENOMEM;
> + }
> +
> + v4l2_info(&dev->v4l2_dev, "Allocate dummy buffer, size: 0x%08x\n",
> + dummy_buf->size);
> +
Drop this v4l2_info.
> + return 0;
> +}
> +
> +static void rkcif_destroy_dummy_buf(struct rkcif_stream *stream)
> +{
> + struct rkcif_dummy_buffer *dummy_buf = &stream->dummy_buf;
> + struct rkcif_device *dev = stream->cifdev;
> +
> + dma_free_coherent(dev->dev, dummy_buf->size,
> + dummy_buf->vaddr, dummy_buf->dma_addr);
> +}
> +
> +static void rkcif_stop_streaming(struct vb2_queue *queue)
> +{
> + struct rkcif_stream *stream = queue->drv_priv;
> + struct rkcif_device *dev = stream->cifdev;
> + struct rkcif_buffer *buf;
> + struct v4l2_subdev *sd;
> + int ret;
> +
> + stream->stopping = true;
> + ret = wait_event_timeout(stream->wq_stopped,
> + stream->state != RKCIF_STATE_STREAMING,
> + msecs_to_jiffies(1000));
> + if (!ret) {
> + rkcif_stream_stop(stream);
> + stream->stopping = false;
> + }
> + pm_runtime_put(dev->dev);
> +
> + /* stop the sub device*/
> + sd = dev->sensor.sd;
> + v4l2_subdev_call(sd, video, s_stream, 0);
> + v4l2_subdev_call(sd, core, s_power, 0);
> +
> + /* release buffers */
> + if (stream->curr_buf) {
> + list_add_tail(&stream->curr_buf->queue, &stream->buf_head);
> + stream->curr_buf = NULL;
> + }
> + if (stream->next_buf) {
Next buffer would seem to indicate some attempt at double-buffering,
but it's not really used.
> + list_add_tail(&stream->next_buf->queue, &stream->buf_head);
> + stream->next_buf = NULL;
> + }
> +
> + while (!list_empty(&stream->buf_head)) {
> + buf = list_first_entry(&stream->buf_head,
> + struct rkcif_buffer, queue);
> + list_del(&buf->queue);
> + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
> + }
> +
> + rkcif_destroy_dummy_buf(stream);
> +}
> +
> +static u32 rkcif_determine_input_mode(struct rkcif_device *dev)
> +{
> + struct rkcif_sensor_info *sensor_info = &dev->sensor;
> + struct rkcif_stream *stream = &dev->stream;
> + v4l2_std_id std;
> + u32 mode = INPUT_MODE_YUV;
> + int ret;
> +
> + ret = v4l2_subdev_call(sensor_info->sd, video, querystd, &std);
> + if (ret == 0) {
> + /* retrieve std from sensor if exist */
> + switch (std) {
> + case V4L2_STD_NTSC:
> + mode = INPUT_MODE_NTSC;
> + break;
> + case V4L2_STD_PAL:
> + mode = INPUT_MODE_PAL;
> + break;
> + case V4L2_STD_ATSC:
> + mode = INPUT_MODE_BT1120;
> + break;
> + default:
> + v4l2_err(&dev->v4l2_dev,
> + "std: %lld is not supported", std);
> + }
> + } else {
> + /* determine input mode by mbus_code (fmt_type) */
> + switch (stream->cif_fmt_in->fmt_type) {
> + case CIF_FMT_TYPE_YUV:
> + mode = INPUT_MODE_YUV;
> + break;
> + case CIF_FMT_TYPE_RAW:
> + mode = INPUT_MODE_RAW;
> + break;
> + }
> + }
> +
> + return mode;
> +}
> +
> +static inline u32 rkcif_scl_ctl(struct rkcif_stream *stream)
> +{
> + u32 fmt_type = stream->cif_fmt_in->fmt_type;
> +
> + return (fmt_type == CIF_FMT_TYPE_YUV) ?
> + ENABLE_YUV_16BIT_BYPASS : ENABLE_RAW_16BIT_BYPASS;
> +}
> +
> +static int rkcif_stream_start(struct rkcif_stream *stream)
> +{
> + u32 val, mbus_flags, href_pol, vsync_pol,
> + xfer_mode = 0, yc_swap = 0, skip_top = 0;
Tab is off here.
> + struct rkcif_device *dev = stream->cifdev;
> + struct rkcif_sensor_info *sensor_info;
> + void __iomem *base = dev->base_addr;
> +
> + sensor_info = &dev->sensor;
> + stream->frame_idx = 0;
> +
> + mbus_flags = sensor_info->mbus.flags;
> + href_pol = (mbus_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) ?
> + HSY_HIGH_ACTIVE : HSY_LOW_ACTIVE;
> + vsync_pol = (mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) ?
> + VSY_HIGH_ACTIVE : VSY_LOW_ACTIVE;
> +
> + if (rkcif_determine_input_mode(dev) == INPUT_MODE_BT1120) {
> + if (stream->cif_fmt_in->field == V4L2_FIELD_NONE)
> + xfer_mode = BT1120_TRANSMIT_PROGRESS;
> + else
> + xfer_mode = BT1120_TRANSMIT_INTERFACE;
> + if (!CIF_FETCH_IS_Y_FIRST(stream->cif_fmt_in->dvp_fmt_val))
> + yc_swap = BT1120_YC_SWAP;
> + }
> +
> + val = vsync_pol | href_pol | rkcif_determine_input_mode(dev) |
> + stream->cif_fmt_out->fmt_val | stream->cif_fmt_in->dvp_fmt_val |
> + xfer_mode | yc_swap;
> + write_cif_reg(base, CIF_FOR, val);
> + val = stream->pixm.width;
> + if (stream->cif_fmt_in->fmt_type == CIF_FMT_TYPE_RAW)
> + val = stream->pixm.width * 2;
> + write_cif_reg(base, CIF_VIR_LINE_WIDTH, val);
> + write_cif_reg(base, CIF_SET_SIZE,
> + stream->pixm.width | (stream->pixm.height << 16));
> +
> + v4l2_subdev_call(sensor_info->sd, sensor, g_skip_top_lines, &skip_top);
> +
> + write_cif_reg(base, CIF_CROP, skip_top << CIF_CROP_Y_SHIFT);
> + write_cif_reg(base, CIF_FRAME_STATUS, FRAME_STAT_CLS);
> + write_cif_reg(base, CIF_INTSTAT, INTSTAT_CLS);
> + write_cif_reg(base, CIF_SCL_CTRL, rkcif_scl_ctl(stream));
> +
> + rkcif_assign_new_buffer_oneframe(stream);
> +
> + write_cif_reg(base, CIF_INTEN, FRAME_END_EN | LINE_ERR_EN |
> + PST_INF_FRAME_END);
> +
> + if (dev->data->chip_id == CHIP_RK1808_CIF &&
> + rkcif_determine_input_mode(dev) == INPUT_MODE_BT1120)
> + write_cif_reg(base, CIF_CTRL,
> + AXI_BURST_16 | MODE_PINGPONG | ENABLE_CAPTURE);
> + else
> + write_cif_reg(base, CIF_CTRL,
> + AXI_BURST_16 | MODE_ONEFRAME | ENABLE_CAPTURE);
> +
> + stream->state = RKCIF_STATE_STREAMING;
> +
> + return 0;
> +}
> +
> +static int rkcif_start_streaming(struct vb2_queue *queue, unsigned int count)
> +{
> + struct rkcif_stream *stream = queue->drv_priv;
> + struct rkcif_device *dev = stream->cifdev;
> + struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
> + struct v4l2_subdev *sd;
> + int ret;
> +
> + if (WARN_ON(stream->state != RKCIF_STATE_READY)) {
This check should not be needed.
> + ret = -EBUSY;
> + v4l2_err(v4l2_dev, "stream in busy state\n");
> + goto destroy_buf;
> + }
> +
> + stream->cif_fmt_in = get_input_fmt(dev->sensor.sd);
> +
> + ret = rkcif_create_dummy_buf(stream);
> + if (ret < 0) {
> + v4l2_err(v4l2_dev, "Failed to create dummy_buf, %d\n", ret);
> + goto destroy_buf;
> + }
> +
> + ret = pm_runtime_get_sync(dev->dev);
> + if (ret < 0) {
> + v4l2_err(v4l2_dev, "Failed to get runtime pm, %d\n", ret);
> + goto destroy_dummy_buf;
> + }
> +
> + /* start sub-devices */
> + sd = dev->sensor.sd;
> + ret = v4l2_subdev_call(sd, core, s_power, 1);
> + if (ret < 0 && ret != -ENOIOCTLCMD)
> + goto runtime_put;
> + ret = v4l2_subdev_call(sd, video, s_stream, 1);
> + if (ret < 0)
> + goto subdev_poweroff;
> +
> + ret = rkcif_stream_start(stream);
> + if (ret < 0)
> + goto stop_stream;
> +
> + return 0;
> +
> +stop_stream:
> + rkcif_stream_stop(stream);
> +subdev_poweroff:
> + v4l2_subdev_call(sd, core, s_power, 0);
> +runtime_put:
> + pm_runtime_put(dev->dev);
> +destroy_dummy_buf:
> + rkcif_destroy_dummy_buf(stream);
> +destroy_buf:
> + while (!list_empty(&stream->buf_head)) {
Move this to a helper?
> + struct rkcif_buffer *buf;
> +
> + buf = list_first_entry(&stream->buf_head,
> + struct rkcif_buffer, queue);
> + list_del(&buf->queue);
> + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
> + }
> +
> + return ret;
> +}
> +
> +static struct vb2_ops rkcif_vb2_ops = {
> + .queue_setup = rkcif_queue_setup,
> + .buf_queue = rkcif_buf_queue,
> + .wait_prepare = vb2_ops_wait_prepare,
> + .wait_finish = vb2_ops_wait_finish,
> + .stop_streaming = rkcif_stop_streaming,
> + .start_streaming = rkcif_start_streaming,
> +};
> +
> +static int rkcif_init_vb2_queue(struct vb2_queue *q,
> + struct rkcif_stream *stream,
> + enum v4l2_buf_type buf_type)
> +{
> + q->type = buf_type;
> + q->io_modes = VB2_MMAP | VB2_DMABUF;
> + q->drv_priv = stream;
> + q->ops = &rkcif_vb2_ops;
> + q->mem_ops = &vb2_dma_contig_memops;
I can't find any CPU mapping, so maybe you'll want to
have q->dma_attrs = DMA_ATTR_NO_KERNEL_MAPPING.
> + q->buf_struct_size = sizeof(struct rkcif_buffer);
> + q->min_buffers_needed = CIF_REQ_BUFS_MIN;
> + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
> + q->lock = &stream->vlock;
> + q->dev = stream->cifdev->dev;
> +
> + return vb2_queue_init(q);
> +}
> +
> +static void rkcif_set_fmt(struct rkcif_stream *stream,
> + struct v4l2_pix_format_mplane *pixm,
> + bool try)
> +{
> + const struct cif_output_fmt *fmt;
> + struct v4l2_rect input_rect;
> + unsigned int imagesize = 0, planes;
> + u32 xsubs = 1, ysubs = 1, i;
> +
> + fmt = find_output_fmt(stream, pixm->pixelformat);
> + if (!fmt)
> + fmt = &out_fmts[0];
> +
> + input_rect.width = CIF_MAX_WIDTH;
> + input_rect.height = CIF_MAX_HEIGHT;
> +
> + pixm->width = clamp_t(u32, pixm->width,
> + CIF_MIN_WIDTH, input_rect.width);
> + pixm->height = clamp_t(u32, pixm->height,
> + CIF_MIN_HEIGHT, input_rect.height);
> +
> + pixm->num_planes = fmt->mplanes;
> + pixm->quantization = V4L2_QUANTIZATION_DEFAULT;
> + pixm->colorspace = V4L2_COLORSPACE_SRGB;
> +
See Hans' comment on v1.
> + pixm->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pixm->colorspace);
> + pixm->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pixm->colorspace);
> +
> + pixm->pixelformat = fmt->fourcc;
> + pixm->field = V4L2_FIELD_NONE;
> +
> + /* calculate plane size and image size */
> + fcc_xysubs(fmt->fourcc, &xsubs, &ysubs);
> +
> + planes = fmt->cplanes ? fmt->cplanes : fmt->mplanes;
> +
> + for (i = 0; i < planes; i++) {
> + struct v4l2_plane_pix_format *plane_fmt;
> + int width, height, bpl, size;
> +
> + if (i == 0) {
> + width = pixm->width;
> + height = pixm->height;
> + } else {
> + width = pixm->width / xsubs;
> + height = pixm->height / ysubs;
> + }
> +
> + bpl = width * fmt->bpp[i] / 8;
> + size = bpl * height;
> + imagesize += size;
> +
> + if (fmt->mplanes > i) {
> + /* Set bpl and size for each mplane */
> + plane_fmt = pixm->plane_fmt + i;
> + plane_fmt->bytesperline = bpl;
> + plane_fmt->sizeimage = size;
> + }
> + }
> +
> + /* convert to non-MPLANE format.
> + * It's important since we want to unify non-MPLANE
I suggest to only support MPLANE API and make your life simpler.
> + * and MPLANE.
> + */
> + if (fmt->mplanes == 1)
> + pixm->plane_fmt[0].sizeimage = imagesize;
> +
> + if (!try) {
> + stream->cif_fmt_out = fmt;
> + stream->pixm = *pixm;
> + }
> +}
> +
> +void rkcif_stream_init(struct rkcif_device *dev)
> +{
> + struct rkcif_stream *stream = &dev->stream;
> + struct v4l2_pix_format_mplane pixm;
> +
> + memset(stream, 0, sizeof(*stream));
> + memset(&pixm, 0, sizeof(pixm));
> + stream->cifdev = dev;
> +
> + INIT_LIST_HEAD(&stream->buf_head);
> + spin_lock_init(&stream->vbq_lock);
> + stream->state = RKCIF_STATE_READY;
> + init_waitqueue_head(&stream->wq_stopped);
> +
> + /* Set default format */
> + pixm.pixelformat = V4L2_PIX_FMT_NV12;
> + pixm.width = RKCIF_DEFAULT_WIDTH;
> + pixm.height = RKCIF_DEFAULT_HEIGHT;
> + rkcif_set_fmt(stream, &pixm, false);
> +
> + stream->crop.left = 0;
> + stream->crop.top = 0;
> + stream->crop.width = 10;
> + stream->crop.height = 10;
As already mentioned by Hans on the v1, please drop.
> +}
> +
> +static int rkcif_fh_open(struct file *filp)
> +{
> + struct video_device *vdev = video_devdata(filp);
> + struct rkcif_stream *stream = to_rkcif_stream(vdev);
> + struct rkcif_device *cifdev = stream->cifdev;
> +
> + rkcif_soft_reset(cifdev);
> +
As already mentioned by Hans, looks problematic.
> + return v4l2_fh_open(filp);
> +}
> +
> +static const struct v4l2_file_operations rkcif_fops = {
> + .open = rkcif_fh_open,
> + .release = vb2_fop_release,
> + .unlocked_ioctl = video_ioctl2,
> + .poll = vb2_fop_poll,
> + .mmap = vb2_fop_mmap,
> +};
> +
> +static int rkcif_enum_input(struct file *file, void *priv,
> + struct v4l2_input *input)
Why supporting the Input ioctls?
> +{
> + if (input->index > 0)
> + return -EINVAL;
> +
> + input->type = V4L2_INPUT_TYPE_CAMERA;
> + strlcpy(input->name, "Camera", sizeof(input->name));
> +
> + return 0;
> +}
> +
> +static int rkcif_try_fmt_vid_cap_mplane(struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct rkcif_stream *stream = video_drvdata(file);
> +
> + rkcif_set_fmt(stream, &f->fmt.pix_mp, true);
> +
> + return 0;
> +}
> +
> +static int rkcif_enum_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + const struct cif_output_fmt *fmt = NULL;
> +
> + if (f->index >= ARRAY_SIZE(out_fmts))
> + return -EINVAL;
> +
> + fmt = &out_fmts[f->index];
> + f->pixelformat = fmt->fourcc;
> +
> + return 0;
> +}
> +
> +static int rkcif_s_fmt_vid_cap_mplane(struct file *file,
> + void *priv, struct v4l2_format *f)
> +{
> + struct rkcif_stream *stream = video_drvdata(file);
> +
> + rkcif_set_fmt(stream, &f->fmt.pix_mp, false);
> +
> + return 0;
> +}
> +
> +static int rkcif_g_fmt_vid_cap_mplane(struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct rkcif_stream *stream = video_drvdata(file);
> +
> + f->fmt.pix_mp = stream->pixm;
> +
> + return 0;
> +}
> +
> +static int rkcif_querycap(struct file *file, void *priv,
> + struct v4l2_capability *cap)
> +{
> + struct rkcif_stream *stream = video_drvdata(file);
> + struct device *dev = stream->cifdev->dev;
> +
> + strlcpy(cap->driver, dev->driver->name, sizeof(cap->driver));
> + strlcpy(cap->card, dev->driver->name, sizeof(cap->card));
> + snprintf(cap->bus_info, sizeof(cap->bus_info),
> + "platform:%s", dev_name(dev));
> +
> + return 0;
> +}
> +
> +static int rkcif_enum_framesizes(struct file *file, void *fh,
> + struct v4l2_frmsizeenum *fsize)
> +{
> + struct rkcif_stream *stream = video_drvdata(file);
> + struct rkcif_device *dev = stream->cifdev;
> + struct v4l2_subdev_frame_size_enum fse = {
> + .index = fsize->index,
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> + };
> + const struct cif_output_fmt *fmt;
> + int ret;
> +
> + if (!dev->sensor.sd)
> + return -EINVAL;
> +
> + fmt = find_output_fmt(stream, fsize->pixel_format);
> + if (!fmt)
> + return -EINVAL;
> +
> + fse.code = fmt->mbus;
> +
> + ret = v4l2_subdev_call(dev->sensor.sd, pad, enum_frame_size,
> + NULL, &fse);
> + if (ret)
> + return ret;
> +
> + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
> + fsize->discrete.width = fse.max_width;
> + fsize->discrete.height = fse.max_height;
> +
> + return 0;
> +}
> +
> +static int rkcif_g_input(struct file *file, void *fh, unsigned int *i)
> +{
> + *i = 0;
> + return 0;
> +}
> +
> +static int rkcif_s_input(struct file *file, void *fh, unsigned int i)
> +{
> + if (i)
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> +static const struct v4l2_ioctl_ops rkcif_v4l2_ioctl_ops = {
> + .vidioc_reqbufs = vb2_ioctl_reqbufs,
> + .vidioc_querybuf = vb2_ioctl_querybuf,
> + .vidioc_create_bufs = vb2_ioctl_create_bufs,
> + .vidioc_qbuf = vb2_ioctl_qbuf,
> + .vidioc_expbuf = vb2_ioctl_expbuf,
> + .vidioc_dqbuf = vb2_ioctl_dqbuf,
> + .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
> + .vidioc_streamon = vb2_ioctl_streamon,
> + .vidioc_streamoff = vb2_ioctl_streamoff,
> +
> + .vidioc_enum_fmt_vid_cap = rkcif_enum_fmt_vid_cap,
> + .vidioc_try_fmt_vid_cap_mplane = rkcif_try_fmt_vid_cap_mplane,
> + .vidioc_s_fmt_vid_cap_mplane = rkcif_s_fmt_vid_cap_mplane,
> + .vidioc_g_fmt_vid_cap_mplane = rkcif_g_fmt_vid_cap_mplane,
> + .vidioc_querycap = rkcif_querycap,
> + .vidioc_enum_framesizes = rkcif_enum_framesizes,
> +
> + .vidioc_enum_input = rkcif_enum_input,
> + .vidioc_g_input = rkcif_g_input,
> + .vidioc_s_input = rkcif_s_input,
> +};
> +
> +void rkcif_unregister_stream_vdev(struct rkcif_device *dev)
> +{
> + struct rkcif_stream *stream = &dev->stream;
> +
> + media_entity_cleanup(&stream->vdev.entity);
> + video_unregister_device(&stream->vdev);
> +}
> +
> +int rkcif_register_stream_vdev(struct rkcif_device *dev)
> +{
> + struct rkcif_stream *stream = &dev->stream;
> + struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
> + struct video_device *vdev = &stream->vdev;
> + int ret;
> +
> + strlcpy(vdev->name, CIF_VIDEODEVICE_NAME, sizeof(vdev->name));
> + mutex_init(&stream->vlock);
> +
> + vdev->ioctl_ops = &rkcif_v4l2_ioctl_ops;
> + vdev->release = video_device_release_empty;
> + vdev->fops = &rkcif_fops;
> + vdev->minor = -1;
> + vdev->v4l2_dev = v4l2_dev;
> + vdev->lock = &stream->vlock;
> + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
> + V4L2_CAP_STREAMING;
> + video_set_drvdata(vdev, stream);
> + vdev->vfl_dir = VFL_DIR_RX;
> + stream->pad.flags = MEDIA_PAD_FL_SINK;
> +
> + rkcif_init_vb2_queue(&stream->buf_queue, stream,
> + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE |
> + V4L2_BUF_TYPE_VIDEO_CAPTURE);
As suggested, drop V4L2_BUF_TYPE_VIDEO_CAPTURE.
> + vdev->queue = &stream->buf_queue;
> + strscpy(vdev->name, KBUILD_MODNAME, sizeof(vdev->name));
> +
> + ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
> + if (ret < 0) {
> + v4l2_err(v4l2_dev,
> + "video_register_device failed with error %d\n", ret);
> + return ret;
> + }
> +
> + ret = media_entity_pads_init(&vdev->entity, 1, &stream->pad);
> + if (ret < 0)
> + goto unreg;
> +
> + return 0;
> +unreg:
> + video_unregister_device(vdev);
> + return ret;
> +}
> +
> +static void rkcif_vb_done_oneframe(struct rkcif_stream *stream,
Why this "oneframe" naming? Is there some other mode planned?
> + struct vb2_v4l2_buffer *vb_done)
> +{
> + const struct cif_output_fmt *fmt = stream->cif_fmt_out;
> + u32 i;
> +
> + /* Dequeue a filled buffer */
> + for (i = 0; i < fmt->mplanes; i++) {
> + vb2_set_plane_payload(&vb_done->vb2_buf, i,
> + stream->pixm.plane_fmt[i].sizeimage);
> + }
> + vb_done->vb2_buf.timestamp = ktime_get_ns();
vb_done->vb2_buf.sequence needs to be set.
Also, you can use it to mark drop buffers. See below.
> + vb2_buffer_done(&vb_done->vb2_buf, VB2_BUF_STATE_DONE);
> +}
> +
> +void rkcif_irq_oneframe(struct rkcif_device *cif_dev)
> +{
> + struct rkcif_stream *stream = &cif_dev->stream;
> + u32 lastline, lastpix, ctl, cif_frmst, intstat;
> + void __iomem *base = cif_dev->base_addr;
> +
> + intstat = read_cif_reg(base, CIF_INTSTAT);
> + cif_frmst = read_cif_reg(base, CIF_FRAME_STATUS);
> + lastline = CIF_FETCH_Y_LAST_LINE(read_cif_reg(base, CIF_LAST_LINE));
> + lastpix = read_cif_reg(base, CIF_LAST_PIX);
> + ctl = read_cif_reg(base, CIF_CTRL);
> +
> + /* There are two irqs enabled:
> + * - PST_INF_FRAME_END: cif FIFO is ready, this is prior to FRAME_END
> + * - FRAME_END: cif has saved frame to memory, a frame ready
> + */
> +
> + if ((intstat & PST_INF_FRAME_END)) {
> + write_cif_reg(base, CIF_INTSTAT, PST_INF_FRAME_END_CLR);
> +
> + if (stream->stopping)
> + /* To stop CIF ASAP, before FRAME_END irq */
> + write_cif_reg(base, CIF_CTRL, ctl & (~ENABLE_CAPTURE));
> + }
> +
> + if ((intstat & LINE_ERR)) {
> + write_cif_reg(base, CIF_INTSTAT, LINE_ERR_CLR);
> +
> + if (stream->stopping) {
> + rkcif_stream_stop(stream);
> + stream->stopping = false;
> + wake_up(&stream->wq_stopped);
> + return;
> + }
> +
> + v4l2_err(&cif_dev->v4l2_dev,
> + "Bad frame, irq:0x%x frmst:0x%x size:%dx%d\n",
> + intstat, cif_frmst, lastline, lastpix);
> + /* Clear status to receive into the same buffer */
> + write_cif_reg(base, CIF_FRAME_STATUS, FRM0_STAT_CLS);
> + return;
> + }
> +
> +
> + if ((intstat & FRAME_END)) {
> + struct vb2_v4l2_buffer *vb_done = NULL;
> +
> + write_cif_reg(base, CIF_INTSTAT, FRAME_END_CLR);
> +
> + if (stream->stopping) {
> + rkcif_stream_stop(stream);
> + stream->stopping = false;
> + wake_up(&stream->wq_stopped);
> + return;
> + }
> +
> + if (lastline != stream->pixm.height ||
> + !(cif_frmst & CIF_F0_READY)) {
> + v4l2_err(&cif_dev->v4l2_dev,
> + "Bad frame, irq:0x%x frmst:0x%x size:%dx%d\n",
> + intstat, cif_frmst, lastline, lastpix);
> + /* Clear status to receive into the same buffer */
> + write_cif_reg(base, CIF_FRAME_STATUS, FRM0_STAT_CLS);
> + return;
> + }
> +
> + if (stream->curr_buf)
> + vb_done = &stream->curr_buf->vb;
> + rkcif_assign_new_buffer_oneframe(stream);
> +
> + /* In one-frame mode, must clear status manually to enable
> + * the next frame end irq
> + */
> + write_cif_reg(base, CIF_FRAME_STATUS, FRM0_STAT_CLS);
> +
> + if (vb_done)
> + rkcif_vb_done_oneframe(stream, vb_done);
> +
> + stream->frame_idx++;
Although it's currently unused, frame_idx will be useful to set the sequence.
Now, it would be interesting to keep track of captures to the dummy buffer
(i.e. dropped buffers) vs. captures to real buffers (captured frames).
Skipping dropped buffers from the sequence would allow userspace
applications to detect that something is going wrong.
You could also expose this captured/dropped counters in debugfs.
> + }
> +}
> diff --git a/drivers/media/platform/rockchip/cif/dev.c b/drivers/media/platform/rockchip/cif/dev.c
> new file mode 100644
> index 000000000000..dbd5fdbd1cef
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/cif/dev.c
> @@ -0,0 +1,358 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Rockchip CIF Driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/interrupt.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_graph.h>
> +#include <linux/of_platform.h>
> +#include <linux/of_reserved_mem.h>
> +#include <linux/reset.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/pinctrl/consumer.h>
> +#include <media/v4l2-fwnode.h>
> +
> +#include "dev.h"
> +#include "regs.h"
> +
> +#define RKCIF_VERNO_LEN 10
> +
> +static int rkcif_create_links(struct rkcif_device *dev)
> +{
> + struct v4l2_subdev *sd = dev->sensor.sd;
> + int ret;
> +
> + ret = media_entity_get_fwnode_pad(&sd->entity, sd->fwnode,
> + MEDIA_PAD_FL_SOURCE);
> + if (ret)
> + return ret;
> +
> + ret = media_create_pad_link(&sd->entity, 0,
> + &dev->stream.vdev.entity, 0,
> + MEDIA_LNK_FL_ENABLED);
> + if (ret) {
> + dev_err(dev->dev, "failed to create link");
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int subdev_notifier_complete(struct v4l2_async_notifier *notifier)
> +{
> + struct rkcif_device *dev;
> + int ret;
> +
> + dev = container_of(notifier, struct rkcif_device, notifier);
> +
> + mutex_lock(&dev->media_dev.graph_mutex);
> +
> + ret = rkcif_create_links(dev);
> + if (ret < 0)
> + goto unlock;
> +
> + ret = v4l2_device_register_subdev_nodes(&dev->v4l2_dev);
> + if (ret < 0)
> + goto unlock;
> +
> +unlock:
> + mutex_unlock(&dev->media_dev.graph_mutex);
> + return ret;
> +}
> +
> +static int subdev_notifier_bound(struct v4l2_async_notifier *notifier,
> + struct v4l2_subdev *subdev,
> + struct v4l2_async_subdev *asd)
> +{
> + struct rkcif_device *cif_dev = container_of(notifier,
> + struct rkcif_device, notifier);
> +
> + int pad;
> +
> + cif_dev->sensor.sd = subdev;
> + pad = media_entity_get_fwnode_pad(&subdev->entity, subdev->fwnode,
> + MEDIA_PAD_FL_SOURCE);
> + if (pad < 0)
> + return pad;
> +
> + cif_dev->sensor.pad = pad;
> +
> + return 0;
> +}
> +
> +static const struct v4l2_async_notifier_operations subdev_notifier_ops = {
> + .bound = subdev_notifier_bound,
> + .complete = subdev_notifier_complete,
> +};
> +
> +static int cif_subdev_notifier(struct rkcif_device *cif_dev)
> +{
> + struct v4l2_async_notifier *ntf = &cif_dev->notifier;
> + struct device *dev = cif_dev->dev;
> + struct v4l2_fwnode_endpoint vep = {
> + .bus_type = V4L2_MBUS_PARALLEL,
> + };
> + struct fwnode_handle *ep;
> + int ret;
> +
> + v4l2_async_notifier_init(ntf);
> +
> + ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0,
> + FWNODE_GRAPH_ENDPOINT_NEXT);
> + if (!ep)
> + return -EINVAL;
> +
> + ret = v4l2_fwnode_endpoint_parse(ep, &vep);
> + if (ret)
> + return ret;
> +
> + ret = v4l2_async_notifier_add_fwnode_remote_subdev(ntf, ep,
> + &cif_dev->asd);
> + if (ret)
> + return ret;
> +
> + ntf->ops = &subdev_notifier_ops;
> +
> + fwnode_handle_put(ep);
> +
> + ret = v4l2_async_notifier_register(&cif_dev->v4l2_dev, ntf);
> + return ret;
> +}
> +
> +static int rkcif_register_platform_subdevs(struct rkcif_device *cif_dev)
> +{
> + int ret;
> +
> + ret = rkcif_register_stream_vdev(cif_dev);
> + if (ret < 0)
> + return ret;
> +
> + ret = cif_subdev_notifier(cif_dev);
> + if (ret < 0) {
> + v4l2_err(&cif_dev->v4l2_dev,
> + "Failed to register subdev notifier(%d)\n", ret);
> + rkcif_unregister_stream_vdev(cif_dev);
> + }
> +
> + return 0;
> +}
> +
> +static struct clk_bulk_data px30_cif_clks[] = {
> + { .id = "aclk" },
> + { .id = "hclk" },
> + { .id = "pclkin" },
> +};
> +
> +static const struct cif_match_data px30_cif_match_data = {
> + .chip_id = CHIP_PX30_CIF,
> + .clks = px30_cif_clks,
> + .clks_num = ARRAY_SIZE(px30_cif_clks),
> +};
> +
> +static const struct of_device_id rkcif_plat_of_match[] = {
> + {
> + .compatible = "rockchip,px30-cif",
> + .data = &px30_cif_match_data,
> + },
> + {},
> +};
> +
> +static irqreturn_t rkcif_irq_handler(int irq, void *ctx)
> +{
> + struct device *dev = ctx;
> + struct rkcif_device *cif_dev = dev_get_drvdata(dev);
> +
> + rkcif_irq_oneframe(cif_dev);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static void rkcif_disable_sys_clk(struct rkcif_device *cif_dev)
> +{
> + int i;
> +
> + for (i = cif_dev->data->clks_num - 1; i >= 0; i--)
> + clk_disable_unprepare(cif_dev->clks[i]);
clk_bulk_disable_unprepare
> +}
> +
> +static int rkcif_enable_sys_clk(struct rkcif_device *cif_dev)
> +{
> + int i, ret = -EINVAL;
> +
> + for (i = 0; i < cif_dev->data->clks_num; i++) {
> + ret = clk_prepare_enable(cif_dev->clks[i]);
> +
clk_bulk_enable_prepare
> + if (ret < 0)
> + goto err;
> + }
> +
> + return 0;
> +
> +err:
> + for (--i; i >= 0; --i)
> + clk_disable_unprepare(cif_dev->clks[i]);
> +
> + return ret;
> +}
> +
> +void rkcif_soft_reset(struct rkcif_device *cif_dev)
> +{
> + reset_control_assert(cif_dev->cif_rst);
> +
> + udelay(5);
> +
> + reset_control_deassert(cif_dev->cif_rst);
> +}
> +
> +static int rkcif_plat_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct v4l2_device *v4l2_dev;
> + struct rkcif_device *cif_dev;
> + const struct cif_match_data *data;
> + int ret, irq;
> +
> + cif_dev = devm_kzalloc(dev, sizeof(*cif_dev), GFP_KERNEL);
> + if (!cif_dev)
> + return -ENOMEM;
> +
> + dev_set_drvdata(dev, cif_dev);
> + cif_dev->dev = dev;
> +
> + data = of_device_get_match_data(&pdev->dev);
> + if (!data)
> + return -EINVAL;
> +
> + cif_dev->data = data;
> +
> + irq = platform_get_irq(pdev, 0);
> + if (irq < 0)
> + return irq;
> +
> + ret = devm_request_irq(dev, irq, rkcif_irq_handler, IRQF_SHARED,
I guess it's shared with the IOMMU, or is this a mistake?
Note that you seem to always handle the interrupt.
> + dev_driver_string(dev), dev);
> + if (ret < 0) {
> + dev_err(dev, "request irq failed: %d\n", ret);
> + return ret;
> + }
> +
> + cif_dev->irq = irq;
> +
> + cif_dev->base_addr = devm_platform_ioremap_resource(pdev, 0);
> + if (IS_ERR(cif_dev->base_addr))
> + return PTR_ERR(cif_dev->base_addr);
> +
> + ret = of_reserved_mem_device_init(dev);
Can't find any mention to this reserved memory in the bindings documentation.
Perhaps you can add an example and/or add some comments for this?
> + if (ret)
> + v4l2_info(v4l2_dev, "No reserved memory region assign to CIF\n");
> +
> + ret = devm_clk_bulk_get(dev, data->clks_num, data->clks);
> + if (ret)
> + return ret;
> +
> + cif_dev->cif_rst = devm_reset_control_array_get(dev, false, false);
> + if (IS_ERR(cif_dev->cif_rst))
> + return PTR_ERR(cif_dev->cif_rst);
> +
> + /* Initialize the stream */
> + rkcif_stream_init(cif_dev);
> +
> + strlcpy(cif_dev->media_dev.model, "rkcif",
> + sizeof(cif_dev->media_dev.model));
> + cif_dev->media_dev.dev = &pdev->dev;
> + v4l2_dev = &cif_dev->v4l2_dev;
> + v4l2_dev->mdev = &cif_dev->media_dev;
> + strlcpy(v4l2_dev->name, "rkcif", sizeof(v4l2_dev->name));
> + v4l2_ctrl_handler_init(&cif_dev->ctrl_handler, 8);
> + v4l2_dev->ctrl_handler = &cif_dev->ctrl_handler;
> +
> + ret = v4l2_device_register(cif_dev->dev, &cif_dev->v4l2_dev);
> + if (ret < 0)
> + return ret;
> +
> + media_device_init(&cif_dev->media_dev);
> +
> + ret = media_device_register(&cif_dev->media_dev);
> + if (ret < 0) {
> + v4l2_err(v4l2_dev, "Failed to register media device: %d\n",
> + ret);
> + goto err_unreg_v4l2_dev;
> + }
> +
> + /* create & register platefom subdev (from of_node) */
> + ret = rkcif_register_platform_subdevs(cif_dev);
> + if (ret < 0)
> + goto err_unreg_media_dev;
> +
> + pm_runtime_enable(&pdev->dev);
> +
Off the top of my head, I believe enabling PM runtime
after registering the device to the world could be problematic.
> + return 0;
> +
> +err_unreg_media_dev:
> + media_device_unregister(&cif_dev->media_dev);
> +err_unreg_v4l2_dev:
> + v4l2_device_unregister(&cif_dev->v4l2_dev);
> + return ret;
> +}
> +
> +static int rkcif_plat_remove(struct platform_device *pdev)
> +{
> + struct rkcif_device *cif_dev = platform_get_drvdata(pdev);
> +
> + pm_runtime_disable(&pdev->dev);
> +
> + media_device_unregister(&cif_dev->media_dev);
> + v4l2_device_unregister(&cif_dev->v4l2_dev);
> + rkcif_unregister_stream_vdev(cif_dev);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused rkcif_runtime_suspend(struct device *dev)
> +{
> + struct rkcif_device *cif_dev = dev_get_drvdata(dev);
> +
> + rkcif_disable_sys_clk(cif_dev);
> +
> + return pinctrl_pm_select_sleep_state(dev);
> +}
> +
> +static int __maybe_unused rkcif_runtime_resume(struct device *dev)
> +{
> + struct rkcif_device *cif_dev = dev_get_drvdata(dev);
> + int ret;
> +
> + ret = pinctrl_pm_select_default_state(dev);
> + if (ret < 0)
> + return ret;
> + rkcif_enable_sys_clk(cif_dev);
> +
Just move the clock handling here and avoid defining rkcif_enable_sys_clk ?
> + return 0;
> +}
> +
> +static const struct dev_pm_ops rkcif_plat_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> + pm_runtime_force_resume)
> + SET_RUNTIME_PM_OPS(rkcif_runtime_suspend, rkcif_runtime_resume, NULL)
> +};
> +
> +static struct platform_driver rkcif_plat_drv = {
> + .driver = {
> + .name = CIF_DRIVER_NAME,
> + .of_match_table = of_match_ptr(rkcif_plat_of_match),
> + .pm = &rkcif_plat_pm_ops,
> + },
> + .probe = rkcif_plat_probe,
> + .remove = rkcif_plat_remove,
> +};
> +
> +module_platform_driver(rkcif_plat_drv);
> +MODULE_AUTHOR("Rockchip Camera/ISP team");
MODULE_AUTHOR goes to the module's metadata,
e.g. for users to query driver's authors.
I've had to upstream drivers originally written by other
people, and I've wondered what's the value of
putting a team as author.
> +MODULE_DESCRIPTION("Rockchip CIF platform driver");
> +MODULE_LICENSE("GPL");
Thanks for the hard work,
Ezequiel
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH v2 2/3] media: rockchip: Introduce driver for Rockhip's camera interface
2020-05-31 13:40 ` Ezequiel Garcia
@ 2020-07-09 7:35 ` Maxime Chevallier
0 siblings, 0 replies; 13+ messages in thread
From: Maxime Chevallier @ 2020-07-09 7:35 UTC (permalink / raw)
To: Ezequiel Garcia
Cc: Mauro Carvalho Chehab, Robin Murphy, Rob Herring, Mark Rutland,
Heiko Stuebner, Hans Verkuil, devicetree,
Linux Kernel Mailing List, Paul Kocialkowski,
open list:ARM/Rockchip SoC...,
Thomas Petazzoni, Miquel Raynal, linux-arm-kernel, linux-media
Hi Ezequiel,
Sorry for the late reply, some answers to your very useful comments
below :)
On Sun, 31 May 2020 10:40:14 -0300
Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> wrote:
>Hi Maxime,
>
>Thanks for posting this patch. I think you can still improve it,
>but it's a neat first try! :-)
>
>On Fri, 29 May 2020 at 10:05, Maxime Chevallier
><maxime.chevallier@bootlin.com> wrote:
>>
>> Introduce a driver for the camera interface on some Rockchip platforms.
>>
>> This controller supports CSI2, Parallel and BT656 interfaces, but for
>> now only the parallel interface could be tested, hence it's the only one
>> that's supported in the first version of this driver.
>>
>
>I'm confused, you mention parallel as the only tested interface,
>but the cover letters mentions PAL. Doesn't PAL mean BT.656
>or am I completely lost?
No you are correct, this is a misunderstanding on my part about the
various formats and naming schemes.
The main point I wanted to outline is that the hardware supports a CSI2
interface, which this version of the driver doesn't implement.
>(I am not super familiar with parallel sensors).
>
>> This controller can be fond on PX30, RK1808, RK3128, RK3288 and RK3288,
>> but for now it's only be tested on PX30.
>>
>
>My RK3288 and RK3326 (i.e. PX30) refer to this IP block as "Video
>Input interface".
>I am wondering if it won't be clearer for developers / users if we
>rename the driver
>to rockchip-vip (and of course s/cif/vip and s/CIF/VIP).
After looking into the datasheets for these SoCs, it's clear that the
denomination should indeed be "VIP" and not "CIF", thanks !
>> Most of this driver was written follwing the BSP driver from rockchip,
>> removing the parts that either didn't fit correctly the guidelines, or
>> that couldn't be tested.
>>
>> This basic version doesn't support cropping nor scaling, and is only
>> designed with one sensor being attached to it a any time.
>>
>> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
>> ---
>>
>> Changes since V1 :
>>
>> - Convert to the bulk APIs for clocks and resets
>
>Note that the bulk API clock conversion was not
>properly done.
>
>> - remove useless references to priv data
>> - Move around some init functions at probe time
>> - Upate some helpers to more suitable ones
>>
>> Here is the output from v4l2-compliance. There are no fails in the final
>> summary, but there is one in the output that I didn't catch previously.
>>
>> Still, here's the V2 in the meantime, if you have any further reviews
>> ompliance SHA: not available, 64 bits
>>
>> Compliance test for rkcif device /dev/video0:
>>
>> Driver Info:
>> Driver name : rkcif
>> Card type : rkcif
>> Bus info : platform:ff490000.cif
>> Driver version : 5.7.0
>> Capabilities : 0x84201000
>> Video Capture Multiplanar
>> Streaming
>> Extended Pix Format
>> Device Capabilities
>> Device Caps : 0x04201000
>> Video Capture Multiplanar
>> Streaming
>> Extended Pix Format
>> Media Driver Info:
>> Driver name : rkcif
>> Model : rkcif
>> Serial :
>> Bus info :
>> Media version : 5.7.0
>> Hardware revision: 0x00000000 (0)
>> Driver version : 5.7.0
>> Interface Info:
>> ID : 0x03000002
>> Type : V4L Video
>> Entity Info:
>> ID : 0x00000001 (1)
>> Name : video_rkcif
>> Function : V4L2 I/O
>> Pad 0x01000004 : 0: Sink
>> Link 0x02000007: from remote pad 0x1000006 of entity 'tw9900 2-0044': Data, Enabled
>>
>> Required ioctls:
>> test MC information (see 'Media Driver Info' above): OK
>> test VIDIOC_QUERYCAP: OK
>>
>> Allow for multiple opens:
>> test second /dev/video0 open: OK
>> test VIDIOC_QUERYCAP: OK
>> test VIDIOC_G/S_PRIORITY: OK
>> test for unlimited opens: OK
>>
>> Debug ioctls:
>> test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
>> test VIDIOC_LOG_STATUS: OK (Not Supported)
>>
>> Input ioctls:
>> test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
>> test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>> test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
>> test VIDIOC_ENUMAUDIO: OK (Not Supported)
>> test VIDIOC_G/S/ENUMINPUT: OK
>> test VIDIOC_G/S_AUDIO: OK (Not Supported)
>> Inputs: 1 Audio Inputs: 0 Tuners: 0
>>
>> Output ioctls:
>> test VIDIOC_G/S_MODULATOR: OK (Not Supported)
>> test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>> test VIDIOC_ENUMAUDOUT: OK (Not Supported)
>> test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
>> test VIDIOC_G/S_AUDOUT: OK (Not Supported)
>> Outputs: 0 Audio Outputs: 0 Modulators: 0
>>
>> Input/Output configuration ioctls:
>> test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
>> test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
>> test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
>> test VIDIOC_G/S_EDID: OK (Not Supported)
>>
>> Control ioctls (Input 0):
>> test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
>> test VIDIOC_QUERYCTRL: OK
>> test VIDIOC_G/S_CTRL: OK
>> test VIDIOC_G/S/TRY_EXT_CTRLS: OK
>> test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK (Not Supported)
>> test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
>> Standard Controls: 0 Private Controls: 0
>>
>> Format ioctls (Input 0):
>> test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
>> test VIDIOC_G/S_PARM: OK (Not Supported)
>> test VIDIOC_G_FBUF: OK (Not Supported)
>> test VIDIOC_G_FMT: OK
>> test VIDIOC_TRY_FMT: OK
>> test VIDIOC_S_FMT: OK
>> test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
>> test Cropping: OK (Not Supported)
>> test Composing: OK (Not Supported)
>> fail: v4l2-test-formats.cpp(1772): node->can_scale && node->frmsizes_count[v4l_format_g_pixelformat(&cur)]
>> test Scaling: OK
>>
>> Codec ioctls (Input 0):
>> test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
>> test VIDIOC_G_ENC_INDEX: OK (Not Supported)
>> test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
>>
>> Buffer ioctls (Input 0):
>> test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
>> test VIDIOC_EXPBUF: OK
>> test Requests: OK (Not Supported)
>>
>> Total for rkcif device /dev/video0: 45, Succeeded: 45, Failed: 0, Warnings: 0
>>
>> drivers/media/platform/Kconfig | 13 +
>> drivers/media/platform/Makefile | 1 +
>> drivers/media/platform/rockchip/cif/Makefile | 3 +
>> drivers/media/platform/rockchip/cif/capture.c | 1170 +++++++++++++++++
>> drivers/media/platform/rockchip/cif/dev.c | 358 +++++
>> drivers/media/platform/rockchip/cif/dev.h | 213 +++
>> drivers/media/platform/rockchip/cif/regs.h | 256 ++++
>> 7 files changed, 2014 insertions(+)
>> create mode 100644 drivers/media/platform/rockchip/cif/Makefile
>> create mode 100644 drivers/media/platform/rockchip/cif/capture.c
>> create mode 100644 drivers/media/platform/rockchip/cif/dev.c
>> create mode 100644 drivers/media/platform/rockchip/cif/dev.h
>> create mode 100644 drivers/media/platform/rockchip/cif/regs.h
>>
>> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
>> index e01bbb9dd1c1..d4ec5e36bca7 100644
>> --- a/drivers/media/platform/Kconfig
>> +++ b/drivers/media/platform/Kconfig
>> @@ -460,6 +460,19 @@ config VIDEO_ROCKCHIP_RGA
>>
>> To compile this driver as a module choose m here.
>>
>> +config VIDEO_ROCKCHIP_CIF
>> + tristate "Rockchip Camera Interface"
>> + depends on VIDEO_DEV && VIDEO_V4L2
>> + depends on ARCH_ROCKCHIP || COMPILE_TEST
>> + select VIDEOBUF2_DMA_SG
>> + select VIDEOBUF2_DMA_CONTIG
>> + select V4L2_FWNODE
>> + select V4L2_MEM2MEM_DEV
>> + help
>> + This is a v4l2 driver for Rockchip SOC Camera interface.
>> +
>> + To compile this driver as a module choose m here.
>> +
>> config VIDEO_TI_VPE
>> tristate "TI VPE (Video Processing Engine) driver"
>> depends on VIDEO_DEV && VIDEO_V4L2
>> diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
>> index d13db96e3015..67e7ac034be1 100644
>> --- a/drivers/media/platform/Makefile
>> +++ b/drivers/media/platform/Makefile
>> @@ -68,6 +68,7 @@ obj-$(CONFIG_VIDEO_RENESAS_JPU) += rcar_jpu.o
>> obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
>>
>> obj-$(CONFIG_VIDEO_ROCKCHIP_RGA) += rockchip/rga/
>> +obj-$(CONFIG_VIDEO_ROCKCHIP_CIF) += rockchip/cif/
>>
>> obj-y += omap/
>>
>> diff --git a/drivers/media/platform/rockchip/cif/Makefile b/drivers/media/platform/rockchip/cif/Makefile
>> new file mode 100644
>> index 000000000000..727990824316
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip/cif/Makefile
>> @@ -0,0 +1,3 @@
>> +# SPDX-License-Identifier: GPL-2.0
>> +obj-$(CONFIG_VIDEO_ROCKCHIP_CIF) += video_rkcif.o
>> +video_rkcif-objs += dev.o capture.o
>> diff --git a/drivers/media/platform/rockchip/cif/capture.c b/drivers/media/platform/rockchip/cif/capture.c
>> new file mode 100644
>> index 000000000000..adab6704129f
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip/cif/capture.c
>> @@ -0,0 +1,1170 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Rockchip CIF Driver
>> + *
>> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
>> + * Copyright (C) 2020 Maxime Chevallier <maxime.chevallier@bootlin.com>
>> + */
>> +
>> +#include <linux/delay.h>
>> +#include <linux/pm_runtime.h>
>> +#include <linux/reset.h>
>> +#include <media/v4l2-common.h>
>> +#include <media/v4l2-event.h>
>> +#include <media/v4l2-fh.h>
>> +#include <media/v4l2-fwnode.h>
>> +#include <media/v4l2-ioctl.h>
>> +#include <media/v4l2-mc.h>
>> +#include <media/v4l2-subdev.h>
>> +#include <media/videobuf2-dma-contig.h>
>> +
>> +#include "dev.h"
>> +#include "regs.h"
>> +
>> +#define CIF_REQ_BUFS_MIN 1
>> +#define CIF_MIN_WIDTH 64
>> +#define CIF_MIN_HEIGHT 64
>> +#define CIF_MAX_WIDTH 8192
>> +#define CIF_MAX_HEIGHT 8192
>> +
>> +#define RKCIF_PLANE_Y 0
>> +#define RKCIF_PLANE_CBCR 1
>> +
>> +#define CIF_FETCH_Y_LAST_LINE(VAL) ((VAL) & 0x1fff)
>> +/* Check if swap y and c in bt1120 mode */
>> +#define CIF_FETCH_IS_Y_FIRST(VAL) ((VAL) & 0xf)
>> +
>> +/* Get xsubs and ysubs for fourcc formats
>> + *
>> + * @xsubs: horizontal color samples in a 4*4 matrix, for yuv
>> + * @ysubs: vertical color samples in a 4*4 matrix, for yuv
>> + */
>> +static int fcc_xysubs(u32 fcc, u32 *xsubs, u32 *ysubs)
>
>You should avoid doing this math in the driver,
>and instead use the nice core helpers
>v4l2_fill_pixfmt_mp and v4l2_fill_pixfmt.
Thanks for the pointer, I didn't know about this helper. I'll add that !
>> +{
>> + switch (fcc) {
>> + case V4L2_PIX_FMT_NV16:
>> + case V4L2_PIX_FMT_NV61:
>> + *xsubs = 2;
>> + *ysubs = 1;
>> + break;
>> + case V4L2_PIX_FMT_NV21:
>> + case V4L2_PIX_FMT_NV12:
>> + *xsubs = 2;
>> + *ysubs = 2;
>> + break;
>> + default:
>> + return -EINVAL;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static const struct cif_output_fmt out_fmts[] = {
>> + {
>> + .fourcc = V4L2_PIX_FMT_NV16,
>> + .cplanes = 2,
>> + .mplanes = 1,
>
>Only mplanes = 1 formats are supported, please
>drop it here, and drop any handling due to mplanes > 1.
Yes you're correct, I'll drop that for now.
>> + .fmt_val = YUV_OUTPUT_422 | UV_STORAGE_ORDER_UVUV,
>> + .bpp = { 8, 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_NV61,
>> + .fmt_val = YUV_OUTPUT_422 | UV_STORAGE_ORDER_VUVU,
>> + .cplanes = 2,
>> + .mplanes = 1,
>> + .bpp = { 8, 16 },
>> + },
>> + {
>> + .fourcc = V4L2_PIX_FMT_NV12,
>> + .fmt_val = YUV_OUTPUT_420 | UV_STORAGE_ORDER_UVUV,
>> + .cplanes = 2,
>> + .mplanes = 1,
>> + .bpp = { 8, 16 },
>> + .mbus = MEDIA_BUS_FMT_UYVY8_2X8,
>> + },
>> + {
>> + .fourcc = V4L2_PIX_FMT_NV21,
>> + .fmt_val = YUV_OUTPUT_420 | UV_STORAGE_ORDER_VUVU,
>> + .cplanes = 2,
>> + .mplanes = 1,
>> + .bpp = { 8, 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_RGB24,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 24 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_RGB565,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_BGR666,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 18 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SRGGB8,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 8 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SGRBG8,
>
>That is odd: how does the driver distinguish
>V4L2_PIX_FMT_SGRBG8 from V4L2_PIX_FMT_SRGGB8?
Hmm I don't really know TBH, I'm not super familiar yet with all the
specific formats, and this was taken maybe a bit too "raw" from the
original BSP driver this is based on...
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 8 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SGBRG8,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 8 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SBGGR8,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 8 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SRGGB10,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SGRBG10,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SGBRG10,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SBGGR10,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SRGGB12,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SGRBG12,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SGBRG12,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SBGGR12,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_SBGGR16,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }, {
>> + .fourcc = V4L2_PIX_FMT_Y16,
>> + .cplanes = 1,
>> + .mplanes = 1,
>> + .bpp = { 16 },
>> + }
>> +};
>> +
>> +static const struct cif_input_fmt in_fmts[] = {
>> + {
>> + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
>> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YUYV,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
>> + .fmt_type = CIF_FMT_TYPE_YUV,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
>> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YUYV,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
>> + .fmt_type = CIF_FMT_TYPE_YUV,
>> + .field = V4L2_FIELD_INTERLACED,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
>> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YVYU,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
>> + .fmt_type = CIF_FMT_TYPE_YUV,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
>> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YVYU,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
>> + .fmt_type = CIF_FMT_TYPE_YUV,
>> + .field = V4L2_FIELD_INTERLACED,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
>> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_UYVY,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
>> + .fmt_type = CIF_FMT_TYPE_YUV,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
>> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_UYVY,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
>> + .fmt_type = CIF_FMT_TYPE_YUV,
>> + .field = V4L2_FIELD_INTERLACED,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
>> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_VYUY,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
>> + .fmt_type = CIF_FMT_TYPE_YUV,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
>> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_VYUY,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
>> + .fmt_type = CIF_FMT_TYPE_YUV,
>> + .field = V4L2_FIELD_INTERLACED,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SGBRG8_1X8,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SRGGB8_1X8,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SBGGR10_1X10,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SGBRG10_1X10,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SRGGB10_1X10,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SBGGR12_1X12,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SGBRG12_1X12,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_SRGGB12_1X12,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_RGB888_1X24,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RGB888,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_Y8_1X8,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_Y10_1X10,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }, {
>> + .mbus_code = MEDIA_BUS_FMT_Y12_1X12,
>> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
>> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
>> + .fmt_type = CIF_FMT_TYPE_RAW,
>> + .field = V4L2_FIELD_NONE,
>> + }
>> +};
>> +
>> +static const struct
>> +cif_input_fmt *get_input_fmt(struct v4l2_subdev *sd)
>> +{
>> + struct v4l2_subdev_format fmt;
>> + int ret;
>> + u32 i;
>> +
>> + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
>> + fmt.pad = 0;
>> + ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
>> + if (ret < 0) {
>> + v4l2_warn(sd->v4l2_dev,
>> + "sensor fmt invalid, set to default size\n");
>> + goto set_default;
>> + }
>> +
>> + for (i = 0; i < ARRAY_SIZE(in_fmts); i++)
>> + if (fmt.format.code == in_fmts[i].mbus_code &&
>> + fmt.format.field == in_fmts[i].field)
>> + return &in_fmts[i];
>> +
>> + v4l2_err(sd->v4l2_dev, "remote sensor mbus code not supported\n");
>> +
>> +set_default:
>> + return NULL;
>> +}
>> +
>> + static const struct
>
>Tab is off. Note that Hans already mentioned this on v1.
>
>> +cif_output_fmt *find_output_fmt(struct rkcif_stream *stream, u32 pixelfmt)
>> +{
>> + const struct cif_output_fmt *fmt;
>> + u32 i;
>> +
>> + for (i = 0; i < ARRAY_SIZE(out_fmts); i++) {
>> + fmt = &out_fmts[i];
>> + if (fmt->fourcc == pixelfmt)
>> + return fmt;
>> + }
>> +
>> + return NULL;
>> +}
>> +
>> +/***************************** stream operations ******************************/
>> +static void rkcif_assign_new_buffer_oneframe(struct rkcif_stream *stream)
>> +{
>> + struct rkcif_dummy_buffer *dummy_buf = &stream->dummy_buf;
>> + struct rkcif_device *dev = stream->cifdev;
>> + void __iomem *base = dev->base_addr;
>> +
>> + /* Set up an empty buffer for the next frame */
>> + spin_lock(&stream->vbq_lock);
>> + if (!list_empty(&stream->buf_head)) {
>> + stream->curr_buf = list_first_entry(&stream->buf_head,
>> + struct rkcif_buffer, queue);
>> + list_del(&stream->curr_buf->queue);
>> + } else {
>> + stream->curr_buf = NULL;
>> + }
>> + spin_unlock(&stream->vbq_lock);
>> +
>> + if (stream->curr_buf) {
>> + write_cif_reg(base, CIF_FRM0_ADDR_Y,
>> + stream->curr_buf->buff_addr[RKCIF_PLANE_Y]);
>> + write_cif_reg(base, CIF_FRM0_ADDR_UV,
>> + stream->curr_buf->buff_addr[RKCIF_PLANE_CBCR]);
>> + write_cif_reg(base, CIF_FRM1_ADDR_Y,
>> + stream->curr_buf->buff_addr[RKCIF_PLANE_Y]);
>> + write_cif_reg(base, CIF_FRM1_ADDR_UV,
>> + stream->curr_buf->buff_addr[RKCIF_PLANE_CBCR]);
>> + } else {
>> + write_cif_reg(base, CIF_FRM0_ADDR_Y, dummy_buf->dma_addr);
>> + write_cif_reg(base, CIF_FRM0_ADDR_UV, dummy_buf->dma_addr);
>> + write_cif_reg(base, CIF_FRM1_ADDR_Y, dummy_buf->dma_addr);
>> + write_cif_reg(base, CIF_FRM1_ADDR_UV, dummy_buf->dma_addr);
>
>Frame 0 and 1 would seem to indicate you can do better
>by implementing some double buffering. Have you tried that?
Yes actually, since this last revision, I've been workign on having the
double-buffering working, which gives some nice perf improvements, so
I'll probably include that in the next round for this series !
>
>> + }
>> +}
>> +
>> +static void rkcif_stream_stop(struct rkcif_stream *stream)
>> +{
>> + struct rkcif_device *cif_dev = stream->cifdev;
>> + void __iomem *base = cif_dev->base_addr;
>> + u32 val;
>> +
>> + val = read_cif_reg(base, CIF_CTRL);
>> + write_cif_reg(base, CIF_CTRL, val & (~ENABLE_CAPTURE));
>> + write_cif_reg(base, CIF_INTEN, 0x0);
>> + write_cif_reg(base, CIF_INTSTAT, 0x3ff);
>> + write_cif_reg(base, CIF_FRAME_STATUS, 0x0);
>> +
>> + stream->state = RKCIF_STATE_READY;
>> +}
>> +
>> +static int rkcif_queue_setup(struct vb2_queue *queue,
>> + unsigned int *num_buffers,
>> + unsigned int *num_planes,
>> + unsigned int sizes[],
>> + struct device *alloc_devs[])
>> +{
>> + struct rkcif_stream *stream = queue->drv_priv;
>> + const struct v4l2_pix_format_mplane *pixm;
>> + const struct cif_output_fmt *cif_fmt;
>> + u32 i;
>> +
>
>Better to use u32 for variables that really need a fixed width,
>and so use e.g. unsigned int here.
Ah yes, thanks !
>> + pixm = &stream->pixm;
>> + cif_fmt = stream->cif_fmt_out;
>> +
>> + if (*num_planes) {
>> + if (*num_planes != cif_fmt->mplanes)
>> + return -EINVAL;
>> +
>> + for (i = 0; i < cif_fmt->mplanes; i++)
>> + if (sizes[i] < pixm->plane_fmt[i].sizeimage)
>> + return -EINVAL;
>> + return 0;
>> + }
>> +
>> + *num_planes = cif_fmt->mplanes;
>> +
>> + for (i = 0; i < cif_fmt->mplanes; i++) {
>> + const struct v4l2_plane_pix_format *plane_fmt;
>> +
>> + plane_fmt = &pixm->plane_fmt[i];
>> + sizes[i] = plane_fmt->sizeimage;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +/*
>> + * The vb2_buffer are stored in rkcif_buffer, in order to unify
>> + * mplane buffer and none-mplane buffer.
>> + */
>> +static void rkcif_buf_queue(struct vb2_buffer *vb)
>> +{
>> + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> + struct rkcif_buffer *cifbuf = to_rkcif_buffer(vbuf);
>> + struct vb2_queue *queue = vb->vb2_queue;
>> + struct rkcif_stream *stream = queue->drv_priv;
>> + struct v4l2_pix_format_mplane *pixm = &stream->pixm;
>> + const struct cif_output_fmt *fmt = stream->cif_fmt_out;
>> + unsigned long lock_flags = 0;
>> + int i;
>> +
>> + memset(cifbuf->buff_addr, 0, sizeof(cifbuf->buff_addr));
>> + /* If mplanes > 1, every c-plane has its own m-plane,
>> + * otherwise, multiple c-planes are in the same m-plane
>> + */
>> + for (i = 0; i < fmt->mplanes; i++)
>> + cifbuf->buff_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
>> +
>> + if (fmt->mplanes == 1) {
>> + for (i = 0; i < fmt->cplanes - 1; i++)
>> + cifbuf->buff_addr[i + 1] = cifbuf->buff_addr[i] +
>> + pixm->plane_fmt[i].bytesperline * pixm->height;
>> + }
>> +
>> + spin_lock_irqsave(&stream->vbq_lock, lock_flags);
>> + list_add_tail(&cifbuf->queue, &stream->buf_head);
>> + spin_unlock_irqrestore(&stream->vbq_lock, lock_flags);
>> +}
>> +
>> +static int rkcif_create_dummy_buf(struct rkcif_stream *stream)
>> +{
>
>As Hans pointed out, dummy buffer needs some explanation
>and details.
Yes I'll be commenting on that, basically the goal is that when the
queue is empty and we don't have any buffer available, we use that
dummy buffer as a destination buffer for the controller.
I'm not very familiar with how other drivers implement such scenarios,
and if this practise is very common... sorry if it's not the case.
>> + struct rkcif_dummy_buffer *dummy_buf = &stream->dummy_buf;
>> + struct rkcif_device *dev = stream->cifdev;
>> +
>> + /* get a maximum plane size */
>> + dummy_buf->size = max3(stream->pixm.plane_fmt[0].bytesperline *
>> + stream->pixm.height,
>> + stream->pixm.plane_fmt[1].sizeimage,
>> + stream->pixm.plane_fmt[2].sizeimage);
>> +
>> + dummy_buf->vaddr = dma_alloc_coherent(dev->dev, dummy_buf->size,
>> + &dummy_buf->dma_addr,
>> + GFP_KERNEL);
>> + if (!dummy_buf->vaddr) {
>> + v4l2_err(&dev->v4l2_dev,
>> + "Failed to allocate the memory for dummy buffer\n");
>> + return -ENOMEM;
>> + }
>> +
>> + v4l2_info(&dev->v4l2_dev, "Allocate dummy buffer, size: 0x%08x\n",
>> + dummy_buf->size);
>> +
>
>Drop this v4l2_info.
>
>> + return 0;
>> +}
>> +
>> +static void rkcif_destroy_dummy_buf(struct rkcif_stream *stream)
>> +{
>> + struct rkcif_dummy_buffer *dummy_buf = &stream->dummy_buf;
>> + struct rkcif_device *dev = stream->cifdev;
>> +
>> + dma_free_coherent(dev->dev, dummy_buf->size,
>> + dummy_buf->vaddr, dummy_buf->dma_addr);
>> +}
>> +
>> +static void rkcif_stop_streaming(struct vb2_queue *queue)
>> +{
>> + struct rkcif_stream *stream = queue->drv_priv;
>> + struct rkcif_device *dev = stream->cifdev;
>> + struct rkcif_buffer *buf;
>> + struct v4l2_subdev *sd;
>> + int ret;
>> +
>> + stream->stopping = true;
>> + ret = wait_event_timeout(stream->wq_stopped,
>> + stream->state != RKCIF_STATE_STREAMING,
>> + msecs_to_jiffies(1000));
>> + if (!ret) {
>> + rkcif_stream_stop(stream);
>> + stream->stopping = false;
>> + }
>> + pm_runtime_put(dev->dev);
>> +
>> + /* stop the sub device*/
>> + sd = dev->sensor.sd;
>> + v4l2_subdev_call(sd, video, s_stream, 0);
>> + v4l2_subdev_call(sd, core, s_power, 0);
>> +
>> + /* release buffers */
>> + if (stream->curr_buf) {
>> + list_add_tail(&stream->curr_buf->queue, &stream->buf_head);
>> + stream->curr_buf = NULL;
>> + }
>> + if (stream->next_buf) {
>
>Next buffer would seem to indicate some attempt at double-buffering,
>but it's not really used.
>
>> + list_add_tail(&stream->next_buf->queue, &stream->buf_head);
>> + stream->next_buf = NULL;
>> + }
>> +
>> + while (!list_empty(&stream->buf_head)) {
>> + buf = list_first_entry(&stream->buf_head,
>> + struct rkcif_buffer, queue);
>> + list_del(&buf->queue);
>> + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
>> + }
>> +
>> + rkcif_destroy_dummy_buf(stream);
>> +}
>> +
>> +static u32 rkcif_determine_input_mode(struct rkcif_device *dev)
>> +{
>> + struct rkcif_sensor_info *sensor_info = &dev->sensor;
>> + struct rkcif_stream *stream = &dev->stream;
>> + v4l2_std_id std;
>> + u32 mode = INPUT_MODE_YUV;
>> + int ret;
>> +
>> + ret = v4l2_subdev_call(sensor_info->sd, video, querystd, &std);
>> + if (ret == 0) {
>> + /* retrieve std from sensor if exist */
>> + switch (std) {
>> + case V4L2_STD_NTSC:
>> + mode = INPUT_MODE_NTSC;
>> + break;
>> + case V4L2_STD_PAL:
>> + mode = INPUT_MODE_PAL;
>> + break;
>> + case V4L2_STD_ATSC:
>> + mode = INPUT_MODE_BT1120;
>> + break;
>> + default:
>> + v4l2_err(&dev->v4l2_dev,
>> + "std: %lld is not supported", std);
>> + }
>> + } else {
>> + /* determine input mode by mbus_code (fmt_type) */
>> + switch (stream->cif_fmt_in->fmt_type) {
>> + case CIF_FMT_TYPE_YUV:
>> + mode = INPUT_MODE_YUV;
>> + break;
>> + case CIF_FMT_TYPE_RAW:
>> + mode = INPUT_MODE_RAW;
>> + break;
>> + }
>> + }
>> +
>> + return mode;
>> +}
>> +
>> +static inline u32 rkcif_scl_ctl(struct rkcif_stream *stream)
>> +{
>> + u32 fmt_type = stream->cif_fmt_in->fmt_type;
>> +
>> + return (fmt_type == CIF_FMT_TYPE_YUV) ?
>> + ENABLE_YUV_16BIT_BYPASS : ENABLE_RAW_16BIT_BYPASS;
>> +}
>> +
>> +static int rkcif_stream_start(struct rkcif_stream *stream)
>> +{
>> + u32 val, mbus_flags, href_pol, vsync_pol,
>> + xfer_mode = 0, yc_swap = 0, skip_top = 0;
>
>Tab is off here.
>
>> + struct rkcif_device *dev = stream->cifdev;
>> + struct rkcif_sensor_info *sensor_info;
>> + void __iomem *base = dev->base_addr;
>> +
>> + sensor_info = &dev->sensor;
>> + stream->frame_idx = 0;
>> +
>> + mbus_flags = sensor_info->mbus.flags;
>> + href_pol = (mbus_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) ?
>> + HSY_HIGH_ACTIVE : HSY_LOW_ACTIVE;
>> + vsync_pol = (mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) ?
>> + VSY_HIGH_ACTIVE : VSY_LOW_ACTIVE;
>> +
>> + if (rkcif_determine_input_mode(dev) == INPUT_MODE_BT1120) {
>> + if (stream->cif_fmt_in->field == V4L2_FIELD_NONE)
>> + xfer_mode = BT1120_TRANSMIT_PROGRESS;
>> + else
>> + xfer_mode = BT1120_TRANSMIT_INTERFACE;
>> + if (!CIF_FETCH_IS_Y_FIRST(stream->cif_fmt_in->dvp_fmt_val))
>> + yc_swap = BT1120_YC_SWAP;
>> + }
>> +
>> + val = vsync_pol | href_pol | rkcif_determine_input_mode(dev) |
>> + stream->cif_fmt_out->fmt_val | stream->cif_fmt_in->dvp_fmt_val |
>> + xfer_mode | yc_swap;
>> + write_cif_reg(base, CIF_FOR, val);
>> + val = stream->pixm.width;
>> + if (stream->cif_fmt_in->fmt_type == CIF_FMT_TYPE_RAW)
>> + val = stream->pixm.width * 2;
>> + write_cif_reg(base, CIF_VIR_LINE_WIDTH, val);
>> + write_cif_reg(base, CIF_SET_SIZE,
>> + stream->pixm.width | (stream->pixm.height << 16));
>> +
>> + v4l2_subdev_call(sensor_info->sd, sensor, g_skip_top_lines, &skip_top);
>> +
>> + write_cif_reg(base, CIF_CROP, skip_top << CIF_CROP_Y_SHIFT);
>> + write_cif_reg(base, CIF_FRAME_STATUS, FRAME_STAT_CLS);
>> + write_cif_reg(base, CIF_INTSTAT, INTSTAT_CLS);
>> + write_cif_reg(base, CIF_SCL_CTRL, rkcif_scl_ctl(stream));
>> +
>> + rkcif_assign_new_buffer_oneframe(stream);
>> +
>> + write_cif_reg(base, CIF_INTEN, FRAME_END_EN | LINE_ERR_EN |
>> + PST_INF_FRAME_END);
>> +
>> + if (dev->data->chip_id == CHIP_RK1808_CIF &&
>> + rkcif_determine_input_mode(dev) == INPUT_MODE_BT1120)
>> + write_cif_reg(base, CIF_CTRL,
>> + AXI_BURST_16 | MODE_PINGPONG | ENABLE_CAPTURE);
>> + else
>> + write_cif_reg(base, CIF_CTRL,
>> + AXI_BURST_16 | MODE_ONEFRAME | ENABLE_CAPTURE);
>> +
>> + stream->state = RKCIF_STATE_STREAMING;
>> +
>> + return 0;
>> +}
>> +
>> +static int rkcif_start_streaming(struct vb2_queue *queue, unsigned int count)
>> +{
>> + struct rkcif_stream *stream = queue->drv_priv;
>> + struct rkcif_device *dev = stream->cifdev;
>> + struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
>> + struct v4l2_subdev *sd;
>> + int ret;
>> +
>> + if (WARN_ON(stream->state != RKCIF_STATE_READY)) {
>
>This check should not be needed.
>
>> + ret = -EBUSY;
>> + v4l2_err(v4l2_dev, "stream in busy state\n");
>> + goto destroy_buf;
>> + }
>> +
>> + stream->cif_fmt_in = get_input_fmt(dev->sensor.sd);
>> +
>> + ret = rkcif_create_dummy_buf(stream);
>> + if (ret < 0) {
>> + v4l2_err(v4l2_dev, "Failed to create dummy_buf, %d\n", ret);
>> + goto destroy_buf;
>> + }
>> +
>> + ret = pm_runtime_get_sync(dev->dev);
>> + if (ret < 0) {
>> + v4l2_err(v4l2_dev, "Failed to get runtime pm, %d\n", ret);
>> + goto destroy_dummy_buf;
>> + }
>> +
>> + /* start sub-devices */
>> + sd = dev->sensor.sd;
>> + ret = v4l2_subdev_call(sd, core, s_power, 1);
>> + if (ret < 0 && ret != -ENOIOCTLCMD)
>> + goto runtime_put;
>> + ret = v4l2_subdev_call(sd, video, s_stream, 1);
>> + if (ret < 0)
>> + goto subdev_poweroff;
>> +
>> + ret = rkcif_stream_start(stream);
>> + if (ret < 0)
>> + goto stop_stream;
>> +
>> + return 0;
>> +
>> +stop_stream:
>> + rkcif_stream_stop(stream);
>> +subdev_poweroff:
>> + v4l2_subdev_call(sd, core, s_power, 0);
>> +runtime_put:
>> + pm_runtime_put(dev->dev);
>> +destroy_dummy_buf:
>> + rkcif_destroy_dummy_buf(stream);
>> +destroy_buf:
>> + while (!list_empty(&stream->buf_head)) {
>
>Move this to a helper?
Yes, this will be cleaner :)
>> + struct rkcif_buffer *buf;
>> +
>> + buf = list_first_entry(&stream->buf_head,
>> + struct rkcif_buffer, queue);
>> + list_del(&buf->queue);
>> + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
>> + }
>> +
>> + return ret;
>> +}
>> +
>> +static struct vb2_ops rkcif_vb2_ops = {
>> + .queue_setup = rkcif_queue_setup,
>> + .buf_queue = rkcif_buf_queue,
>> + .wait_prepare = vb2_ops_wait_prepare,
>> + .wait_finish = vb2_ops_wait_finish,
>> + .stop_streaming = rkcif_stop_streaming,
>> + .start_streaming = rkcif_start_streaming,
>> +};
>> +
>> +static int rkcif_init_vb2_queue(struct vb2_queue *q,
>> + struct rkcif_stream *stream,
>> + enum v4l2_buf_type buf_type)
>> +{
>> + q->type = buf_type;
>> + q->io_modes = VB2_MMAP | VB2_DMABUF;
>> + q->drv_priv = stream;
>> + q->ops = &rkcif_vb2_ops;
>> + q->mem_ops = &vb2_dma_contig_memops;
>
>I can't find any CPU mapping, so maybe you'll want to
>have q->dma_attrs = DMA_ATTR_NO_KERNEL_MAPPING.
Ok nice catch, I'll try that
>> + q->buf_struct_size = sizeof(struct rkcif_buffer);
>> + q->min_buffers_needed = CIF_REQ_BUFS_MIN;
>> + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
>> + q->lock = &stream->vlock;
>> + q->dev = stream->cifdev->dev;
>> +
>> + return vb2_queue_init(q);
>> +}
>> +
>> +static void rkcif_set_fmt(struct rkcif_stream *stream,
>> + struct v4l2_pix_format_mplane *pixm,
>> + bool try)
>> +{
>> + const struct cif_output_fmt *fmt;
>> + struct v4l2_rect input_rect;
>> + unsigned int imagesize = 0, planes;
>> + u32 xsubs = 1, ysubs = 1, i;
>> +
>> + fmt = find_output_fmt(stream, pixm->pixelformat);
>> + if (!fmt)
>> + fmt = &out_fmts[0];
>> +
>> + input_rect.width = CIF_MAX_WIDTH;
>> + input_rect.height = CIF_MAX_HEIGHT;
>> +
>> + pixm->width = clamp_t(u32, pixm->width,
>> + CIF_MIN_WIDTH, input_rect.width);
>> + pixm->height = clamp_t(u32, pixm->height,
>> + CIF_MIN_HEIGHT, input_rect.height);
>> +
>> + pixm->num_planes = fmt->mplanes;
>> + pixm->quantization = V4L2_QUANTIZATION_DEFAULT;
>> + pixm->colorspace = V4L2_COLORSPACE_SRGB;
>> +
>
>See Hans' comment on v1.
>
>> + pixm->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pixm->colorspace);
>> + pixm->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pixm->colorspace);
>> +
>> + pixm->pixelformat = fmt->fourcc;
>> + pixm->field = V4L2_FIELD_NONE;
>> +
>> + /* calculate plane size and image size */
>> + fcc_xysubs(fmt->fourcc, &xsubs, &ysubs);
>> +
>> + planes = fmt->cplanes ? fmt->cplanes : fmt->mplanes;
>> +
>> + for (i = 0; i < planes; i++) {
>> + struct v4l2_plane_pix_format *plane_fmt;
>> + int width, height, bpl, size;
>> +
>> + if (i == 0) {
>> + width = pixm->width;
>> + height = pixm->height;
>> + } else {
>> + width = pixm->width / xsubs;
>> + height = pixm->height / ysubs;
>> + }
>> +
>> + bpl = width * fmt->bpp[i] / 8;
>> + size = bpl * height;
>> + imagesize += size;
>> +
>> + if (fmt->mplanes > i) {
>> + /* Set bpl and size for each mplane */
>> + plane_fmt = pixm->plane_fmt + i;
>> + plane_fmt->bytesperline = bpl;
>> + plane_fmt->sizeimage = size;
>> + }
>> + }
>> +
>> + /* convert to non-MPLANE format.
>> + * It's important since we want to unify non-MPLANE
>
>I suggest to only support MPLANE API and make your life simpler.
Yes definitely, this will be simplified
>> + * and MPLANE.
>> + */
>> + if (fmt->mplanes == 1)
>> + pixm->plane_fmt[0].sizeimage = imagesize;
>> +
>> + if (!try) {
>> + stream->cif_fmt_out = fmt;
>> + stream->pixm = *pixm;
>> + }
>> +}
>> +
>> +void rkcif_stream_init(struct rkcif_device *dev)
>> +{
>> + struct rkcif_stream *stream = &dev->stream;
>> + struct v4l2_pix_format_mplane pixm;
>> +
>> + memset(stream, 0, sizeof(*stream));
>> + memset(&pixm, 0, sizeof(pixm));
>> + stream->cifdev = dev;
>> +
>> + INIT_LIST_HEAD(&stream->buf_head);
>> + spin_lock_init(&stream->vbq_lock);
>> + stream->state = RKCIF_STATE_READY;
>> + init_waitqueue_head(&stream->wq_stopped);
>> +
>> + /* Set default format */
>> + pixm.pixelformat = V4L2_PIX_FMT_NV12;
>> + pixm.width = RKCIF_DEFAULT_WIDTH;
>> + pixm.height = RKCIF_DEFAULT_HEIGHT;
>> + rkcif_set_fmt(stream, &pixm, false);
>> +
>> + stream->crop.left = 0;
>> + stream->crop.top = 0;
>> + stream->crop.width = 10;
>> + stream->crop.height = 10;
>
>As already mentioned by Hans on the v1, please drop.
>
>> +}
>> +
>> +static int rkcif_fh_open(struct file *filp)
>> +{
>> + struct video_device *vdev = video_devdata(filp);
>> + struct rkcif_stream *stream = to_rkcif_stream(vdev);
>> + struct rkcif_device *cifdev = stream->cifdev;
>> +
>> + rkcif_soft_reset(cifdev);
>> +
>
>As already mentioned by Hans, looks problematic.
>
>> + return v4l2_fh_open(filp);
>> +}
>> +
>> +static const struct v4l2_file_operations rkcif_fops = {
>> + .open = rkcif_fh_open,
>> + .release = vb2_fop_release,
>> + .unlocked_ioctl = video_ioctl2,
>> + .poll = vb2_fop_poll,
>> + .mmap = vb2_fop_mmap,
>> +};
>> +
>> +static int rkcif_enum_input(struct file *file, void *priv,
>> + struct v4l2_input *input)
>
>Why supporting the Input ioctls?
>
>> +{
>> + if (input->index > 0)
>> + return -EINVAL;
>> +
>> + input->type = V4L2_INPUT_TYPE_CAMERA;
>> + strlcpy(input->name, "Camera", sizeof(input->name));
>> +
>> + return 0;
>> +}
>> +
>> +static int rkcif_try_fmt_vid_cap_mplane(struct file *file, void *fh,
>> + struct v4l2_format *f)
>> +{
>> + struct rkcif_stream *stream = video_drvdata(file);
>> +
>> + rkcif_set_fmt(stream, &f->fmt.pix_mp, true);
>> +
>> + return 0;
>> +}
>> +
>> +static int rkcif_enum_fmt_vid_cap(struct file *file, void *priv,
>> + struct v4l2_fmtdesc *f)
>> +{
>> + const struct cif_output_fmt *fmt = NULL;
>> +
>> + if (f->index >= ARRAY_SIZE(out_fmts))
>> + return -EINVAL;
>> +
>> + fmt = &out_fmts[f->index];
>> + f->pixelformat = fmt->fourcc;
>> +
>> + return 0;
>> +}
>> +
>> +static int rkcif_s_fmt_vid_cap_mplane(struct file *file,
>> + void *priv, struct v4l2_format *f)
>> +{
>> + struct rkcif_stream *stream = video_drvdata(file);
>> +
>> + rkcif_set_fmt(stream, &f->fmt.pix_mp, false);
>> +
>> + return 0;
>> +}
>> +
>> +static int rkcif_g_fmt_vid_cap_mplane(struct file *file, void *fh,
>> + struct v4l2_format *f)
>> +{
>> + struct rkcif_stream *stream = video_drvdata(file);
>> +
>> + f->fmt.pix_mp = stream->pixm;
>> +
>> + return 0;
>> +}
>> +
>> +static int rkcif_querycap(struct file *file, void *priv,
>> + struct v4l2_capability *cap)
>> +{
>> + struct rkcif_stream *stream = video_drvdata(file);
>> + struct device *dev = stream->cifdev->dev;
>> +
>> + strlcpy(cap->driver, dev->driver->name, sizeof(cap->driver));
>> + strlcpy(cap->card, dev->driver->name, sizeof(cap->card));
>> + snprintf(cap->bus_info, sizeof(cap->bus_info),
>> + "platform:%s", dev_name(dev));
>> +
>> + return 0;
>> +}
>> +
>> +static int rkcif_enum_framesizes(struct file *file, void *fh,
>> + struct v4l2_frmsizeenum *fsize)
>> +{
>> + struct rkcif_stream *stream = video_drvdata(file);
>> + struct rkcif_device *dev = stream->cifdev;
>> + struct v4l2_subdev_frame_size_enum fse = {
>> + .index = fsize->index,
>> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
>> + };
>> + const struct cif_output_fmt *fmt;
>> + int ret;
>> +
>> + if (!dev->sensor.sd)
>> + return -EINVAL;
>> +
>> + fmt = find_output_fmt(stream, fsize->pixel_format);
>> + if (!fmt)
>> + return -EINVAL;
>> +
>> + fse.code = fmt->mbus;
>> +
>> + ret = v4l2_subdev_call(dev->sensor.sd, pad, enum_frame_size,
>> + NULL, &fse);
>> + if (ret)
>> + return ret;
>> +
>> + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
>> + fsize->discrete.width = fse.max_width;
>> + fsize->discrete.height = fse.max_height;
>> +
>> + return 0;
>> +}
>> +
>> +static int rkcif_g_input(struct file *file, void *fh, unsigned int *i)
>> +{
>> + *i = 0;
>> + return 0;
>> +}
>> +
>> +static int rkcif_s_input(struct file *file, void *fh, unsigned int i)
>> +{
>> + if (i)
>> + return -EINVAL;
>> +
>> + return 0;
>> +}
>> +
>> +static const struct v4l2_ioctl_ops rkcif_v4l2_ioctl_ops = {
>> + .vidioc_reqbufs = vb2_ioctl_reqbufs,
>> + .vidioc_querybuf = vb2_ioctl_querybuf,
>> + .vidioc_create_bufs = vb2_ioctl_create_bufs,
>> + .vidioc_qbuf = vb2_ioctl_qbuf,
>> + .vidioc_expbuf = vb2_ioctl_expbuf,
>> + .vidioc_dqbuf = vb2_ioctl_dqbuf,
>> + .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
>> + .vidioc_streamon = vb2_ioctl_streamon,
>> + .vidioc_streamoff = vb2_ioctl_streamoff,
>> +
>> + .vidioc_enum_fmt_vid_cap = rkcif_enum_fmt_vid_cap,
>> + .vidioc_try_fmt_vid_cap_mplane = rkcif_try_fmt_vid_cap_mplane,
>> + .vidioc_s_fmt_vid_cap_mplane = rkcif_s_fmt_vid_cap_mplane,
>> + .vidioc_g_fmt_vid_cap_mplane = rkcif_g_fmt_vid_cap_mplane,
>> + .vidioc_querycap = rkcif_querycap,
>> + .vidioc_enum_framesizes = rkcif_enum_framesizes,
>> +
>> + .vidioc_enum_input = rkcif_enum_input,
>> + .vidioc_g_input = rkcif_g_input,
>> + .vidioc_s_input = rkcif_s_input,
>> +};
>> +
>> +void rkcif_unregister_stream_vdev(struct rkcif_device *dev)
>> +{
>> + struct rkcif_stream *stream = &dev->stream;
>> +
>> + media_entity_cleanup(&stream->vdev.entity);
>> + video_unregister_device(&stream->vdev);
>> +}
>> +
>> +int rkcif_register_stream_vdev(struct rkcif_device *dev)
>> +{
>> + struct rkcif_stream *stream = &dev->stream;
>> + struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
>> + struct video_device *vdev = &stream->vdev;
>> + int ret;
>> +
>> + strlcpy(vdev->name, CIF_VIDEODEVICE_NAME, sizeof(vdev->name));
>> + mutex_init(&stream->vlock);
>> +
>> + vdev->ioctl_ops = &rkcif_v4l2_ioctl_ops;
>> + vdev->release = video_device_release_empty;
>> + vdev->fops = &rkcif_fops;
>> + vdev->minor = -1;
>> + vdev->v4l2_dev = v4l2_dev;
>> + vdev->lock = &stream->vlock;
>> + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
>> + V4L2_CAP_STREAMING;
>> + video_set_drvdata(vdev, stream);
>> + vdev->vfl_dir = VFL_DIR_RX;
>> + stream->pad.flags = MEDIA_PAD_FL_SINK;
>> +
>> + rkcif_init_vb2_queue(&stream->buf_queue, stream,
>> + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE |
>> + V4L2_BUF_TYPE_VIDEO_CAPTURE);
>
>As suggested, drop V4L2_BUF_TYPE_VIDEO_CAPTURE.
>
>> + vdev->queue = &stream->buf_queue;
>> + strscpy(vdev->name, KBUILD_MODNAME, sizeof(vdev->name));
>> +
>> + ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
>> + if (ret < 0) {
>> + v4l2_err(v4l2_dev,
>> + "video_register_device failed with error %d\n", ret);
>> + return ret;
>> + }
>> +
>> + ret = media_entity_pads_init(&vdev->entity, 1, &stream->pad);
>> + if (ret < 0)
>> + goto unreg;
>> +
>> + return 0;
>> +unreg:
>> + video_unregister_device(vdev);
>> + return ret;
>> +}
>> +
>> +static void rkcif_vb_done_oneframe(struct rkcif_stream *stream,
>
>Why this "oneframe" naming? Is there some other mode planned?
>
>> + struct vb2_v4l2_buffer *vb_done)
>> +{
>> + const struct cif_output_fmt *fmt = stream->cif_fmt_out;
>> + u32 i;
>> +
>> + /* Dequeue a filled buffer */
>> + for (i = 0; i < fmt->mplanes; i++) {
>> + vb2_set_plane_payload(&vb_done->vb2_buf, i,
>> + stream->pixm.plane_fmt[i].sizeimage);
>> + }
>> + vb_done->vb2_buf.timestamp = ktime_get_ns();
>
>vb_done->vb2_buf.sequence needs to be set.
>Also, you can use it to mark drop buffers. See below.
>
>> + vb2_buffer_done(&vb_done->vb2_buf, VB2_BUF_STATE_DONE);
>> +}
>> +
>> +void rkcif_irq_oneframe(struct rkcif_device *cif_dev)
>> +{
>> + struct rkcif_stream *stream = &cif_dev->stream;
>> + u32 lastline, lastpix, ctl, cif_frmst, intstat;
>> + void __iomem *base = cif_dev->base_addr;
>> +
>> + intstat = read_cif_reg(base, CIF_INTSTAT);
>> + cif_frmst = read_cif_reg(base, CIF_FRAME_STATUS);
>> + lastline = CIF_FETCH_Y_LAST_LINE(read_cif_reg(base, CIF_LAST_LINE));
>> + lastpix = read_cif_reg(base, CIF_LAST_PIX);
>> + ctl = read_cif_reg(base, CIF_CTRL);
>> +
>> + /* There are two irqs enabled:
>> + * - PST_INF_FRAME_END: cif FIFO is ready, this is prior to FRAME_END
>> + * - FRAME_END: cif has saved frame to memory, a frame ready
>> + */
>> +
>> + if ((intstat & PST_INF_FRAME_END)) {
>> + write_cif_reg(base, CIF_INTSTAT, PST_INF_FRAME_END_CLR);
>> +
>> + if (stream->stopping)
>> + /* To stop CIF ASAP, before FRAME_END irq */
>> + write_cif_reg(base, CIF_CTRL, ctl & (~ENABLE_CAPTURE));
>> + }
>> +
>> + if ((intstat & LINE_ERR)) {
>> + write_cif_reg(base, CIF_INTSTAT, LINE_ERR_CLR);
>> +
>> + if (stream->stopping) {
>> + rkcif_stream_stop(stream);
>> + stream->stopping = false;
>> + wake_up(&stream->wq_stopped);
>> + return;
>> + }
>> +
>> + v4l2_err(&cif_dev->v4l2_dev,
>> + "Bad frame, irq:0x%x frmst:0x%x size:%dx%d\n",
>> + intstat, cif_frmst, lastline, lastpix);
>> + /* Clear status to receive into the same buffer */
>> + write_cif_reg(base, CIF_FRAME_STATUS, FRM0_STAT_CLS);
>> + return;
>> + }
>> +
>> +
>> + if ((intstat & FRAME_END)) {
>> + struct vb2_v4l2_buffer *vb_done = NULL;
>> +
>> + write_cif_reg(base, CIF_INTSTAT, FRAME_END_CLR);
>> +
>> + if (stream->stopping) {
>> + rkcif_stream_stop(stream);
>> + stream->stopping = false;
>> + wake_up(&stream->wq_stopped);
>> + return;
>> + }
>> +
>> + if (lastline != stream->pixm.height ||
>> + !(cif_frmst & CIF_F0_READY)) {
>> + v4l2_err(&cif_dev->v4l2_dev,
>> + "Bad frame, irq:0x%x frmst:0x%x size:%dx%d\n",
>> + intstat, cif_frmst, lastline, lastpix);
>> + /* Clear status to receive into the same buffer */
>> + write_cif_reg(base, CIF_FRAME_STATUS, FRM0_STAT_CLS);
>> + return;
>> + }
>> +
>> + if (stream->curr_buf)
>> + vb_done = &stream->curr_buf->vb;
>> + rkcif_assign_new_buffer_oneframe(stream);
>> +
>> + /* In one-frame mode, must clear status manually to enable
>> + * the next frame end irq
>> + */
>> + write_cif_reg(base, CIF_FRAME_STATUS, FRM0_STAT_CLS);
>> +
>> + if (vb_done)
>> + rkcif_vb_done_oneframe(stream, vb_done);
>> +
>> + stream->frame_idx++;
>
>Although it's currently unused, frame_idx will be useful to set the sequence.
>Now, it would be interesting to keep track of captures to the dummy buffer
>(i.e. dropped buffers) vs. captures to real buffers (captured frames).
>
>Skipping dropped buffers from the sequence would allow userspace
>applications to detect that something is going wrong.
>
>You could also expose this captured/dropped counters in debugfs.
Yup good idea ! I'm currently debugging issues with some frames
getting lost, so I'll be implementing something very similar to what
you suggest !
>> + }
>> +}
>> diff --git a/drivers/media/platform/rockchip/cif/dev.c b/drivers/media/platform/rockchip/cif/dev.c
>> new file mode 100644
>> index 000000000000..dbd5fdbd1cef
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip/cif/dev.c
>> @@ -0,0 +1,358 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Rockchip CIF Driver
>> + *
>> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
>> + */
>> +
>> +#include <linux/clk.h>
>> +#include <linux/delay.h>
>> +#include <linux/interrupt.h>
>> +#include <linux/module.h>
>> +#include <linux/of.h>
>> +#include <linux/of_graph.h>
>> +#include <linux/of_platform.h>
>> +#include <linux/of_reserved_mem.h>
>> +#include <linux/reset.h>
>> +#include <linux/pm_runtime.h>
>> +#include <linux/pinctrl/consumer.h>
>> +#include <media/v4l2-fwnode.h>
>> +
>> +#include "dev.h"
>> +#include "regs.h"
>> +
>> +#define RKCIF_VERNO_LEN 10
>> +
>> +static int rkcif_create_links(struct rkcif_device *dev)
>> +{
>> + struct v4l2_subdev *sd = dev->sensor.sd;
>> + int ret;
>> +
>> + ret = media_entity_get_fwnode_pad(&sd->entity, sd->fwnode,
>> + MEDIA_PAD_FL_SOURCE);
>> + if (ret)
>> + return ret;
>> +
>> + ret = media_create_pad_link(&sd->entity, 0,
>> + &dev->stream.vdev.entity, 0,
>> + MEDIA_LNK_FL_ENABLED);
>> + if (ret) {
>> + dev_err(dev->dev, "failed to create link");
>> + return ret;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int subdev_notifier_complete(struct v4l2_async_notifier *notifier)
>> +{
>> + struct rkcif_device *dev;
>> + int ret;
>> +
>> + dev = container_of(notifier, struct rkcif_device, notifier);
>> +
>> + mutex_lock(&dev->media_dev.graph_mutex);
>> +
>> + ret = rkcif_create_links(dev);
>> + if (ret < 0)
>> + goto unlock;
>> +
>> + ret = v4l2_device_register_subdev_nodes(&dev->v4l2_dev);
>> + if (ret < 0)
>> + goto unlock;
>> +
>> +unlock:
>> + mutex_unlock(&dev->media_dev.graph_mutex);
>> + return ret;
>> +}
>> +
>> +static int subdev_notifier_bound(struct v4l2_async_notifier *notifier,
>> + struct v4l2_subdev *subdev,
>> + struct v4l2_async_subdev *asd)
>> +{
>> + struct rkcif_device *cif_dev = container_of(notifier,
>> + struct rkcif_device, notifier);
>> +
>> + int pad;
>> +
>> + cif_dev->sensor.sd = subdev;
>> + pad = media_entity_get_fwnode_pad(&subdev->entity, subdev->fwnode,
>> + MEDIA_PAD_FL_SOURCE);
>> + if (pad < 0)
>> + return pad;
>> +
>> + cif_dev->sensor.pad = pad;
>> +
>> + return 0;
>> +}
>> +
>> +static const struct v4l2_async_notifier_operations subdev_notifier_ops = {
>> + .bound = subdev_notifier_bound,
>> + .complete = subdev_notifier_complete,
>> +};
>> +
>> +static int cif_subdev_notifier(struct rkcif_device *cif_dev)
>> +{
>> + struct v4l2_async_notifier *ntf = &cif_dev->notifier;
>> + struct device *dev = cif_dev->dev;
>> + struct v4l2_fwnode_endpoint vep = {
>> + .bus_type = V4L2_MBUS_PARALLEL,
>> + };
>> + struct fwnode_handle *ep;
>> + int ret;
>> +
>> + v4l2_async_notifier_init(ntf);
>> +
>> + ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0,
>> + FWNODE_GRAPH_ENDPOINT_NEXT);
>> + if (!ep)
>> + return -EINVAL;
>> +
>> + ret = v4l2_fwnode_endpoint_parse(ep, &vep);
>> + if (ret)
>> + return ret;
>> +
>> + ret = v4l2_async_notifier_add_fwnode_remote_subdev(ntf, ep,
>> + &cif_dev->asd);
>> + if (ret)
>> + return ret;
>> +
>> + ntf->ops = &subdev_notifier_ops;
>> +
>> + fwnode_handle_put(ep);
>> +
>> + ret = v4l2_async_notifier_register(&cif_dev->v4l2_dev, ntf);
>> + return ret;
>> +}
>> +
>> +static int rkcif_register_platform_subdevs(struct rkcif_device *cif_dev)
>> +{
>> + int ret;
>> +
>> + ret = rkcif_register_stream_vdev(cif_dev);
>> + if (ret < 0)
>> + return ret;
>> +
>> + ret = cif_subdev_notifier(cif_dev);
>> + if (ret < 0) {
>> + v4l2_err(&cif_dev->v4l2_dev,
>> + "Failed to register subdev notifier(%d)\n", ret);
>> + rkcif_unregister_stream_vdev(cif_dev);
>> + }
>> +
>> + return 0;
>> +}
>
>> +
>> +static struct clk_bulk_data px30_cif_clks[] = {
>> + { .id = "aclk" },
>> + { .id = "hclk" },
>> + { .id = "pclkin" },
>> +};
>> +
>> +static const struct cif_match_data px30_cif_match_data = {
>> + .chip_id = CHIP_PX30_CIF,
>> + .clks = px30_cif_clks,
>> + .clks_num = ARRAY_SIZE(px30_cif_clks),
>> +};
>> +
>> +static const struct of_device_id rkcif_plat_of_match[] = {
>> + {
>> + .compatible = "rockchip,px30-cif",
>> + .data = &px30_cif_match_data,
>> + },
>> + {},
>> +};
>> +
>> +static irqreturn_t rkcif_irq_handler(int irq, void *ctx)
>> +{
>> + struct device *dev = ctx;
>> + struct rkcif_device *cif_dev = dev_get_drvdata(dev);
>> +
>> + rkcif_irq_oneframe(cif_dev);
>> +
>> + return IRQ_HANDLED;
>> +}
>> +
>> +static void rkcif_disable_sys_clk(struct rkcif_device *cif_dev)
>> +{
>> + int i;
>> +
>> + for (i = cif_dev->data->clks_num - 1; i >= 0; i--)
>> + clk_disable_unprepare(cif_dev->clks[i]);
>
>clk_bulk_disable_unprepare
>
>> +}
>> +
>> +static int rkcif_enable_sys_clk(struct rkcif_device *cif_dev)
>> +{
>> + int i, ret = -EINVAL;
>> +
>> + for (i = 0; i < cif_dev->data->clks_num; i++) {
>> + ret = clk_prepare_enable(cif_dev->clks[i]);
>> +
>
>clk_bulk_enable_prepare
>
>> + if (ret < 0)
>> + goto err;
>> + }
>> +
>> + return 0;
>> +
>> +err:
>> + for (--i; i >= 0; --i)
>> + clk_disable_unprepare(cif_dev->clks[i]);
>> +
>> + return ret;
>> +}
>> +
>> +void rkcif_soft_reset(struct rkcif_device *cif_dev)
>> +{
>> + reset_control_assert(cif_dev->cif_rst);
>> +
>> + udelay(5);
>> +
>> + reset_control_deassert(cif_dev->cif_rst);
>> +}
>> +
>> +static int rkcif_plat_probe(struct platform_device *pdev)
>> +{
>> + struct device *dev = &pdev->dev;
>> + struct v4l2_device *v4l2_dev;
>> + struct rkcif_device *cif_dev;
>> + const struct cif_match_data *data;
>> + int ret, irq;
>> +
>> + cif_dev = devm_kzalloc(dev, sizeof(*cif_dev), GFP_KERNEL);
>> + if (!cif_dev)
>> + return -ENOMEM;
>> +
>> + dev_set_drvdata(dev, cif_dev);
>> + cif_dev->dev = dev;
>> +
>> + data = of_device_get_match_data(&pdev->dev);
>> + if (!data)
>> + return -EINVAL;
>> +
>> + cif_dev->data = data;
>> +
>> + irq = platform_get_irq(pdev, 0);
>> + if (irq < 0)
>> + return irq;
>> +
>> + ret = devm_request_irq(dev, irq, rkcif_irq_handler, IRQF_SHARED,
>
>I guess it's shared with the IOMMU, or is this a mistake?
Hmm you might be right, I'll need to check that.
>Note that you seem to always handle the interrupt.
>
>> + dev_driver_string(dev), dev);
>> + if (ret < 0) {
>> + dev_err(dev, "request irq failed: %d\n", ret);
>> + return ret;
>> + }
>> +
>> + cif_dev->irq = irq;
>> +
>> + cif_dev->base_addr = devm_platform_ioremap_resource(pdev, 0);
>> + if (IS_ERR(cif_dev->base_addr))
>> + return PTR_ERR(cif_dev->base_addr);
>> +
>> + ret = of_reserved_mem_device_init(dev);
>
>Can't find any mention to this reserved memory in the bindings documentation.
>Perhaps you can add an example and/or add some comments for this?
yes this should be added in the binding, you're correct.
>> + if (ret)
>> + v4l2_info(v4l2_dev, "No reserved memory region assign to CIF\n");
>> +
>> + ret = devm_clk_bulk_get(dev, data->clks_num, data->clks);
>> + if (ret)
>> + return ret;
>> +
>> + cif_dev->cif_rst = devm_reset_control_array_get(dev, false, false);
>> + if (IS_ERR(cif_dev->cif_rst))
>> + return PTR_ERR(cif_dev->cif_rst);
>> +
>> + /* Initialize the stream */
>> + rkcif_stream_init(cif_dev);
>> +
>> + strlcpy(cif_dev->media_dev.model, "rkcif",
>> + sizeof(cif_dev->media_dev.model));
>> + cif_dev->media_dev.dev = &pdev->dev;
>> + v4l2_dev = &cif_dev->v4l2_dev;
>> + v4l2_dev->mdev = &cif_dev->media_dev;
>> + strlcpy(v4l2_dev->name, "rkcif", sizeof(v4l2_dev->name));
>> + v4l2_ctrl_handler_init(&cif_dev->ctrl_handler, 8);
>> + v4l2_dev->ctrl_handler = &cif_dev->ctrl_handler;
>> +
>> + ret = v4l2_device_register(cif_dev->dev, &cif_dev->v4l2_dev);
>> + if (ret < 0)
>> + return ret;
>> +
>> + media_device_init(&cif_dev->media_dev);
>> +
>> + ret = media_device_register(&cif_dev->media_dev);
>> + if (ret < 0) {
>> + v4l2_err(v4l2_dev, "Failed to register media device: %d\n",
>> + ret);
>> + goto err_unreg_v4l2_dev;
>> + }
>> +
>> + /* create & register platefom subdev (from of_node) */
>> + ret = rkcif_register_platform_subdevs(cif_dev);
>> + if (ret < 0)
>> + goto err_unreg_media_dev;
>> +
>> + pm_runtime_enable(&pdev->dev);
>> +
>
>Off the top of my head, I believe enabling PM runtime
>after registering the device to the world could be problematic.
Ah OK, I didn't know that.
>> + return 0;
>> +
>> +err_unreg_media_dev:
>> + media_device_unregister(&cif_dev->media_dev);
>> +err_unreg_v4l2_dev:
>> + v4l2_device_unregister(&cif_dev->v4l2_dev);
>> + return ret;
>> +}
>> +
>> +static int rkcif_plat_remove(struct platform_device *pdev)
>> +{
>> + struct rkcif_device *cif_dev = platform_get_drvdata(pdev);
>> +
>> + pm_runtime_disable(&pdev->dev);
>> +
>> + media_device_unregister(&cif_dev->media_dev);
>> + v4l2_device_unregister(&cif_dev->v4l2_dev);
>> + rkcif_unregister_stream_vdev(cif_dev);
>> +
>> + return 0;
>> +}
>> +
>> +static int __maybe_unused rkcif_runtime_suspend(struct device *dev)
>> +{
>> + struct rkcif_device *cif_dev = dev_get_drvdata(dev);
>> +
>> + rkcif_disable_sys_clk(cif_dev);
>> +
>> + return pinctrl_pm_select_sleep_state(dev);
>> +}
>> +
>> +static int __maybe_unused rkcif_runtime_resume(struct device *dev)
>> +{
>> + struct rkcif_device *cif_dev = dev_get_drvdata(dev);
>> + int ret;
>> +
>> + ret = pinctrl_pm_select_default_state(dev);
>> + if (ret < 0)
>> + return ret;
>> + rkcif_enable_sys_clk(cif_dev);
>> +
>
>Just move the clock handling here and avoid defining rkcif_enable_sys_clk ?
Yup, I'll do that too
>> + return 0;
>> +}
>> +
>> +static const struct dev_pm_ops rkcif_plat_pm_ops = {
>> + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
>> + pm_runtime_force_resume)
>> + SET_RUNTIME_PM_OPS(rkcif_runtime_suspend, rkcif_runtime_resume, NULL)
>> +};
>> +
>> +static struct platform_driver rkcif_plat_drv = {
>> + .driver = {
>> + .name = CIF_DRIVER_NAME,
>> + .of_match_table = of_match_ptr(rkcif_plat_of_match),
>> + .pm = &rkcif_plat_pm_ops,
>> + },
>> + .probe = rkcif_plat_probe,
>> + .remove = rkcif_plat_remove,
>> +};
>> +
>> +module_platform_driver(rkcif_plat_drv);
>> +MODULE_AUTHOR("Rockchip Camera/ISP team");
>
>MODULE_AUTHOR goes to the module's metadata,
>e.g. for users to query driver's authors.
>
>I've had to upstream drivers originally written by other
>people, and I've wondered what's the value of
>putting a team as author.
>
>> +MODULE_DESCRIPTION("Rockchip CIF platform driver");
>> +MODULE_LICENSE("GPL");
>
>Thanks for the hard work,
And thanks for the thourough review !! This helps a lot !
Maxime
>Ezequiel
--
Maxime Chevallier, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v2 2/3] media: rockchip: Introduce driver for Rockhip's camera interface
2020-05-29 13:04 ` [PATCH v2 2/3] media: rockchip: Introduce driver for Rockhip's camera interface Maxime Chevallier
` (2 preceding siblings ...)
2020-05-31 13:40 ` Ezequiel Garcia
@ 2020-07-09 18:06 ` Dafna Hirschfeld
3 siblings, 0 replies; 13+ messages in thread
From: Dafna Hirschfeld @ 2020-07-09 18:06 UTC (permalink / raw)
To: Maxime Chevallier, Mauro Carvalho Chehab, Robin Murphy,
Rob Herring, Mark Rutland, Heiko Stuebner, Hans Verkuil
Cc: linux-media, devicetree, linux-arm-kernel, linux-rockchip,
linux-kernel, Thomas Petazzoni, Miquel Raynal, Paul Kocialkowski
hi,
On 29.05.20 15:04, Maxime Chevallier wrote:
> Introduce a driver for the camera interface on some Rockchip platforms.
>
> This controller supports CSI2, Parallel and BT656 interfaces, but for
> now only the parallel interface could be tested, hence it's the only one
> that's supported in the first version of this driver.
>
> This controller can be fond on PX30, RK1808, RK3128, RK3288 and RK3288,
> but for now it's only be tested on PX30.
>
> Most of this driver was written follwing the BSP driver from rockchip,
> removing the parts that either didn't fit correctly the guidelines, or
> that couldn't be tested.
>
> This basic version doesn't support cropping nor scaling, and is only
> designed with one sensor being attached to it a any time.
>
> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
> ---
>
> Changes since V1 :
>
> - Convert to the bulk APIs for clocks and resets
> - remove useless references to priv data
> - Move around some init functions at probe time
> - Upate some helpers to more suitable ones
>
> Here is the output from v4l2-compliance. There are no fails in the final
> summary, but there is one in the output that I didn't catch previously.
>
> Still, here's the V2 in the meantime, if you have any further reviews
> ompliance SHA: not available, 64 bits
>
> Compliance test for rkcif device /dev/video0:
>
> Driver Info:
> Driver name : rkcif
> Card type : rkcif
> Bus info : platform:ff490000.cif
> Driver version : 5.7.0
> Capabilities : 0x84201000
> Video Capture Multiplanar
> Streaming
> Extended Pix Format
> Device Capabilities
> Device Caps : 0x04201000
> Video Capture Multiplanar
> Streaming
> Extended Pix Format
> Media Driver Info:
> Driver name : rkcif
> Model : rkcif
> Serial :
> Bus info :
> Media version : 5.7.0
> Hardware revision: 0x00000000 (0)
> Driver version : 5.7.0
> Interface Info:
> ID : 0x03000002
> Type : V4L Video
> Entity Info:
> ID : 0x00000001 (1)
> Name : video_rkcif
> Function : V4L2 I/O
> Pad 0x01000004 : 0: Sink
> Link 0x02000007: from remote pad 0x1000006 of entity 'tw9900 2-0044': Data, Enabled
>
> Required ioctls:
> test MC information (see 'Media Driver Info' above): OK
> test VIDIOC_QUERYCAP: OK
>
> Allow for multiple opens:
> test second /dev/video0 open: OK
> test VIDIOC_QUERYCAP: OK
> test VIDIOC_G/S_PRIORITY: OK
> test for unlimited opens: OK
>
> Debug ioctls:
> test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
> test VIDIOC_LOG_STATUS: OK (Not Supported)
>
> Input ioctls:
> test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
> test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
> test VIDIOC_ENUMAUDIO: OK (Not Supported)
> test VIDIOC_G/S/ENUMINPUT: OK
> test VIDIOC_G/S_AUDIO: OK (Not Supported)
> Inputs: 1 Audio Inputs: 0 Tuners: 0
>
> Output ioctls:
> test VIDIOC_G/S_MODULATOR: OK (Not Supported)
> test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> test VIDIOC_ENUMAUDOUT: OK (Not Supported)
> test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
> test VIDIOC_G/S_AUDOUT: OK (Not Supported)
> Outputs: 0 Audio Outputs: 0 Modulators: 0
>
> Input/Output configuration ioctls:
> test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
> test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
> test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
> test VIDIOC_G/S_EDID: OK (Not Supported)
>
> Control ioctls (Input 0):
> test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> test VIDIOC_QUERYCTRL: OK
> test VIDIOC_G/S_CTRL: OK
> test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK (Not Supported)
> test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> Standard Controls: 0 Private Controls: 0
>
> Format ioctls (Input 0):
> test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> test VIDIOC_G/S_PARM: OK (Not Supported)
> test VIDIOC_G_FBUF: OK (Not Supported)
> test VIDIOC_G_FMT: OK
> test VIDIOC_TRY_FMT: OK
> test VIDIOC_S_FMT: OK
> test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> test Cropping: OK (Not Supported)
> test Composing: OK (Not Supported)
> fail: v4l2-test-formats.cpp(1772): node->can_scale && node->frmsizes_count[v4l_format_g_pixelformat(&cur)]
> test Scaling: OK
>
> Codec ioctls (Input 0):
> test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
>
> Buffer ioctls (Input 0):
> test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> test VIDIOC_EXPBUF: OK
> test Requests: OK (Not Supported)
>
> Total for rkcif device /dev/video0: 45, Succeeded: 45, Failed: 0, Warnings: 0
>
> drivers/media/platform/Kconfig | 13 +
> drivers/media/platform/Makefile | 1 +
> drivers/media/platform/rockchip/cif/Makefile | 3 +
> drivers/media/platform/rockchip/cif/capture.c | 1170 +++++++++++++++++
> drivers/media/platform/rockchip/cif/dev.c | 358 +++++
> drivers/media/platform/rockchip/cif/dev.h | 213 +++
> drivers/media/platform/rockchip/cif/regs.h | 256 ++++
> 7 files changed, 2014 insertions(+)
> create mode 100644 drivers/media/platform/rockchip/cif/Makefile
> create mode 100644 drivers/media/platform/rockchip/cif/capture.c
> create mode 100644 drivers/media/platform/rockchip/cif/dev.c
> create mode 100644 drivers/media/platform/rockchip/cif/dev.h
> create mode 100644 drivers/media/platform/rockchip/cif/regs.h
>
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index e01bbb9dd1c1..d4ec5e36bca7 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -460,6 +460,19 @@ config VIDEO_ROCKCHIP_RGA
>
> To compile this driver as a module choose m here.
>
> +config VIDEO_ROCKCHIP_CIF
> + tristate "Rockchip Camera Interface"
> + depends on VIDEO_DEV && VIDEO_V4L2
> + depends on ARCH_ROCKCHIP || COMPILE_TEST
> + select VIDEOBUF2_DMA_SG
> + select VIDEOBUF2_DMA_CONTIG
> + select V4L2_FWNODE
> + select V4L2_MEM2MEM_DEV
> + help
> + This is a v4l2 driver for Rockchip SOC Camera interface.
> +
> + To compile this driver as a module choose m here.
> +
> config VIDEO_TI_VPE
> tristate "TI VPE (Video Processing Engine) driver"
> depends on VIDEO_DEV && VIDEO_V4L2
> diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
> index d13db96e3015..67e7ac034be1 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -68,6 +68,7 @@ obj-$(CONFIG_VIDEO_RENESAS_JPU) += rcar_jpu.o
> obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
>
> obj-$(CONFIG_VIDEO_ROCKCHIP_RGA) += rockchip/rga/
> +obj-$(CONFIG_VIDEO_ROCKCHIP_CIF) += rockchip/cif/
>
> obj-y += omap/
>
> diff --git a/drivers/media/platform/rockchip/cif/Makefile b/drivers/media/platform/rockchip/cif/Makefile
> new file mode 100644
> index 000000000000..727990824316
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/cif/Makefile
> @@ -0,0 +1,3 @@
> +# SPDX-License-Identifier: GPL-2.0
> +obj-$(CONFIG_VIDEO_ROCKCHIP_CIF) += video_rkcif.o
> +video_rkcif-objs += dev.o capture.o
> diff --git a/drivers/media/platform/rockchip/cif/capture.c b/drivers/media/platform/rockchip/cif/capture.c
> new file mode 100644
> index 000000000000..adab6704129f
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/cif/capture.c
> @@ -0,0 +1,1170 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Rockchip CIF Driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + * Copyright (C) 2020 Maxime Chevallier <maxime.chevallier@bootlin.com>
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/reset.h>
> +#include <media/v4l2-common.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fh.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/v4l2-mc.h>
> +#include <media/v4l2-subdev.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +#include "dev.h"
> +#include "regs.h"
> +
> +#define CIF_REQ_BUFS_MIN 1
> +#define CIF_MIN_WIDTH 64
> +#define CIF_MIN_HEIGHT 64
> +#define CIF_MAX_WIDTH 8192
> +#define CIF_MAX_HEIGHT 8192
> +
> +#define RKCIF_PLANE_Y 0
> +#define RKCIF_PLANE_CBCR 1
> +
> +#define CIF_FETCH_Y_LAST_LINE(VAL) ((VAL) & 0x1fff)
> +/* Check if swap y and c in bt1120 mode */
> +#define CIF_FETCH_IS_Y_FIRST(VAL) ((VAL) & 0xf)
> +
> +/* Get xsubs and ysubs for fourcc formats
> + *
> + * @xsubs: horizontal color samples in a 4*4 matrix, for yuv
> + * @ysubs: vertical color samples in a 4*4 matrix, for yuv
> + */
> +static int fcc_xysubs(u32 fcc, u32 *xsubs, u32 *ysubs)
> +{
> + switch (fcc) {
> + case V4L2_PIX_FMT_NV16:
> + case V4L2_PIX_FMT_NV61:
> + *xsubs = 2;
> + *ysubs = 1;
> + break;
> + case V4L2_PIX_FMT_NV21:
> + case V4L2_PIX_FMT_NV12:
> + *xsubs = 2;
> + *ysubs = 2;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static const struct cif_output_fmt out_fmts[] = {
> + {
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .cplanes = 2,
> + .mplanes = 1,
> + .fmt_val = YUV_OUTPUT_422 | UV_STORAGE_ORDER_UVUV,
> + .bpp = { 8, 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_NV61,
> + .fmt_val = YUV_OUTPUT_422 | UV_STORAGE_ORDER_VUVU,
> + .cplanes = 2,
> + .mplanes = 1,
> + .bpp = { 8, 16 },
> + },
> + {
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .fmt_val = YUV_OUTPUT_420 | UV_STORAGE_ORDER_UVUV,
> + .cplanes = 2,
> + .mplanes = 1,
> + .bpp = { 8, 16 },
> + .mbus = MEDIA_BUS_FMT_UYVY8_2X8,
> + },
> + {
> + .fourcc = V4L2_PIX_FMT_NV21,
> + .fmt_val = YUV_OUTPUT_420 | UV_STORAGE_ORDER_VUVU,
> + .cplanes = 2,
> + .mplanes = 1,
> + .bpp = { 8, 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_RGB24,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 24 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_RGB565,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_BGR666,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 18 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SRGGB8,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 8 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGRBG8,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 8 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGBRG8,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 8 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR8,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 8 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SRGGB10,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGRBG10,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGBRG10,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR10,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SRGGB12,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGRBG12,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGBRG12,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR12,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR16,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }, {
> + .fourcc = V4L2_PIX_FMT_Y16,
> + .cplanes = 1,
> + .mplanes = 1,
> + .bpp = { 16 },
> + }
> +};
> +
> +static const struct cif_input_fmt in_fmts[] = {
> + {
> + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YUYV,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YUYV,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_INTERLACED,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YVYU,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_YVYU,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_INTERLACED,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_UYVY,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_UYVY,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_INTERLACED,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_VYUY,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
> + .dvp_fmt_val = YUV_INPUT_422 | YUV_INPUT_ORDER_VYUY,
> + .csi_fmt_val = CSI_WRDDR_TYPE_YUV422,
> + .fmt_type = CIF_FMT_TYPE_YUV,
> + .field = V4L2_FIELD_INTERLACED,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGBRG8_1X8,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SRGGB8_1X8,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SBGGR10_1X10,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGBRG10_1X10,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SRGGB10_1X10,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SBGGR12_1X12,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGBRG12_1X12,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_SRGGB12_1X12,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_RGB888_1X24,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RGB888,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_Y8_1X8,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_8,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW8,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_Y10_1X10,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_10,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW10,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }, {
> + .mbus_code = MEDIA_BUS_FMT_Y12_1X12,
> + .dvp_fmt_val = INPUT_MODE_RAW | RAW_DATA_WIDTH_12,
> + .csi_fmt_val = CSI_WRDDR_TYPE_RAW12,
> + .fmt_type = CIF_FMT_TYPE_RAW,
> + .field = V4L2_FIELD_NONE,
> + }
> +};
> +
> +static const struct
> +cif_input_fmt *get_input_fmt(struct v4l2_subdev *sd)
> +{
> + struct v4l2_subdev_format fmt;
> + int ret;
> + u32 i;
> +
> + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
> + fmt.pad = 0;
> + ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
> + if (ret < 0) {
> + v4l2_warn(sd->v4l2_dev,
> + "sensor fmt invalid, set to default size\n");
> + goto set_default;
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(in_fmts); i++)
> + if (fmt.format.code == in_fmts[i].mbus_code &&
> + fmt.format.field == in_fmts[i].field)
> + return &in_fmts[i];
> +
> + v4l2_err(sd->v4l2_dev, "remote sensor mbus code not supported\n");
> +
> +set_default:
> + return NULL;
> +}
> +
> + static const struct
> +cif_output_fmt *find_output_fmt(struct rkcif_stream *stream, u32 pixelfmt)
> +{
> + const struct cif_output_fmt *fmt;
> + u32 i;
> +
> + for (i = 0; i < ARRAY_SIZE(out_fmts); i++) {
> + fmt = &out_fmts[i];
> + if (fmt->fourcc == pixelfmt)
> + return fmt;
> + }
> +
> + return NULL;
> +}
> +
> +/***************************** stream operations ******************************/
> +static void rkcif_assign_new_buffer_oneframe(struct rkcif_stream *stream)
> +{
> + struct rkcif_dummy_buffer *dummy_buf = &stream->dummy_buf;
> + struct rkcif_device *dev = stream->cifdev;
> + void __iomem *base = dev->base_addr;
> +
> + /* Set up an empty buffer for the next frame */
> + spin_lock(&stream->vbq_lock);
> + if (!list_empty(&stream->buf_head)) {
> + stream->curr_buf = list_first_entry(&stream->buf_head,
> + struct rkcif_buffer, queue);
> + list_del(&stream->curr_buf->queue);
> + } else {
> + stream->curr_buf = NULL;
> + }
> + spin_unlock(&stream->vbq_lock);
> +
> + if (stream->curr_buf) {
> + write_cif_reg(base, CIF_FRM0_ADDR_Y,
> + stream->curr_buf->buff_addr[RKCIF_PLANE_Y]);
> + write_cif_reg(base, CIF_FRM0_ADDR_UV,
> + stream->curr_buf->buff_addr[RKCIF_PLANE_CBCR]);
> + write_cif_reg(base, CIF_FRM1_ADDR_Y,
> + stream->curr_buf->buff_addr[RKCIF_PLANE_Y]);
> + write_cif_reg(base, CIF_FRM1_ADDR_UV,
> + stream->curr_buf->buff_addr[RKCIF_PLANE_CBCR]);
> + } else {
> + write_cif_reg(base, CIF_FRM0_ADDR_Y, dummy_buf->dma_addr);
> + write_cif_reg(base, CIF_FRM0_ADDR_UV, dummy_buf->dma_addr);
> + write_cif_reg(base, CIF_FRM1_ADDR_Y, dummy_buf->dma_addr);
> + write_cif_reg(base, CIF_FRM1_ADDR_UV, dummy_buf->dma_addr);
> + }
> +}
> +
> +static void rkcif_stream_stop(struct rkcif_stream *stream)
> +{
> + struct rkcif_device *cif_dev = stream->cifdev;
> + void __iomem *base = cif_dev->base_addr;
> + u32 val;
> +
> + val = read_cif_reg(base, CIF_CTRL);
> + write_cif_reg(base, CIF_CTRL, val & (~ENABLE_CAPTURE));
> + write_cif_reg(base, CIF_INTEN, 0x0);
> + write_cif_reg(base, CIF_INTSTAT, 0x3ff);
> + write_cif_reg(base, CIF_FRAME_STATUS, 0x0);
> +
> + stream->state = RKCIF_STATE_READY;
> +}
> +
> +static int rkcif_queue_setup(struct vb2_queue *queue,
> + unsigned int *num_buffers,
> + unsigned int *num_planes,
> + unsigned int sizes[],
> + struct device *alloc_devs[])
> +{
> + struct rkcif_stream *stream = queue->drv_priv;
> + const struct v4l2_pix_format_mplane *pixm;
> + const struct cif_output_fmt *cif_fmt;
> + u32 i;
> +
> + pixm = &stream->pixm;
> + cif_fmt = stream->cif_fmt_out;
> +
> + if (*num_planes) {
> + if (*num_planes != cif_fmt->mplanes)
> + return -EINVAL;
> +
> + for (i = 0; i < cif_fmt->mplanes; i++)
> + if (sizes[i] < pixm->plane_fmt[i].sizeimage)
> + return -EINVAL;
> + return 0;
> + }
> +
> + *num_planes = cif_fmt->mplanes;
> +
> + for (i = 0; i < cif_fmt->mplanes; i++) {
> + const struct v4l2_plane_pix_format *plane_fmt;
> +
> + plane_fmt = &pixm->plane_fmt[i];
> + sizes[i] = plane_fmt->sizeimage;
> + }
> +
> + return 0;
> +}
> +
> +/*
> + * The vb2_buffer are stored in rkcif_buffer, in order to unify
> + * mplane buffer and none-mplane buffer.
> + */
> +static void rkcif_buf_queue(struct vb2_buffer *vb)
> +{
> + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct rkcif_buffer *cifbuf = to_rkcif_buffer(vbuf);
> + struct vb2_queue *queue = vb->vb2_queue;
> + struct rkcif_stream *stream = queue->drv_priv;
> + struct v4l2_pix_format_mplane *pixm = &stream->pixm;
> + const struct cif_output_fmt *fmt = stream->cif_fmt_out;
> + unsigned long lock_flags = 0;
> + int i;
> +
> + memset(cifbuf->buff_addr, 0, sizeof(cifbuf->buff_addr));
> + /* If mplanes > 1, every c-plane has its own m-plane,
> + * otherwise, multiple c-planes are in the same m-plane
> + */
> + for (i = 0; i < fmt->mplanes; i++)
> + cifbuf->buff_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
> +
> + if (fmt->mplanes == 1) {
> + for (i = 0; i < fmt->cplanes - 1; i++)
> + cifbuf->buff_addr[i + 1] = cifbuf->buff_addr[i] +
> + pixm->plane_fmt[i].bytesperline * pixm->height;
> + }
> +
> + spin_lock_irqsave(&stream->vbq_lock, lock_flags);
> + list_add_tail(&cifbuf->queue, &stream->buf_head);
> + spin_unlock_irqrestore(&stream->vbq_lock, lock_flags);
> +}
> +
> +static int rkcif_create_dummy_buf(struct rkcif_stream *stream)
> +{
> + struct rkcif_dummy_buffer *dummy_buf = &stream->dummy_buf;
> + struct rkcif_device *dev = stream->cifdev;
> +
> + /* get a maximum plane size */
> + dummy_buf->size = max3(stream->pixm.plane_fmt[0].bytesperline *
> + stream->pixm.height,
> + stream->pixm.plane_fmt[1].sizeimage,
> + stream->pixm.plane_fmt[2].sizeimage);
> +
> + dummy_buf->vaddr = dma_alloc_coherent(dev->dev, dummy_buf->size,
> + &dummy_buf->dma_addr,
> + GFP_KERNEL);
> + if (!dummy_buf->vaddr) {
> + v4l2_err(&dev->v4l2_dev,
> + "Failed to allocate the memory for dummy buffer\n");
> + return -ENOMEM;
> + }
> +
> + v4l2_info(&dev->v4l2_dev, "Allocate dummy buffer, size: 0x%08x\n",
> + dummy_buf->size);
> +
> + return 0;
> +}
> +
> +static void rkcif_destroy_dummy_buf(struct rkcif_stream *stream)
> +{
> + struct rkcif_dummy_buffer *dummy_buf = &stream->dummy_buf;
> + struct rkcif_device *dev = stream->cifdev;
> +
> + dma_free_coherent(dev->dev, dummy_buf->size,
> + dummy_buf->vaddr, dummy_buf->dma_addr);
> +}
> +
> +static void rkcif_stop_streaming(struct vb2_queue *queue)
> +{
> + struct rkcif_stream *stream = queue->drv_priv;
> + struct rkcif_device *dev = stream->cifdev;
> + struct rkcif_buffer *buf;
> + struct v4l2_subdev *sd;
> + int ret;
> +
> + stream->stopping = true;
> + ret = wait_event_timeout(stream->wq_stopped,
> + stream->state != RKCIF_STATE_STREAMING,
> + msecs_to_jiffies(1000));
> + if (!ret) {
> + rkcif_stream_stop(stream);
> + stream->stopping = false;
> + }
> + pm_runtime_put(dev->dev);
> +
> + /* stop the sub device*/
> + sd = dev->sensor.sd;
> + v4l2_subdev_call(sd, video, s_stream, 0);
> + v4l2_subdev_call(sd, core, s_power, 0);
> +
> + /* release buffers */
> + if (stream->curr_buf) {
> + list_add_tail(&stream->curr_buf->queue, &stream->buf_head);
> + stream->curr_buf = NULL;
> + }
> + if (stream->next_buf) {
> + list_add_tail(&stream->next_buf->queue, &stream->buf_head);
> + stream->next_buf = NULL;
> + }
> +
> + while (!list_empty(&stream->buf_head)) {
> + buf = list_first_entry(&stream->buf_head,
> + struct rkcif_buffer, queue);
> + list_del(&buf->queue);
> + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
> + }
> +
> + rkcif_destroy_dummy_buf(stream);
> +}
> +
> +static u32 rkcif_determine_input_mode(struct rkcif_device *dev)
> +{
> + struct rkcif_sensor_info *sensor_info = &dev->sensor;
> + struct rkcif_stream *stream = &dev->stream;
> + v4l2_std_id std;
> + u32 mode = INPUT_MODE_YUV;
> + int ret;
> +
> + ret = v4l2_subdev_call(sensor_info->sd, video, querystd, &std);
> + if (ret == 0) {
> + /* retrieve std from sensor if exist */
> + switch (std) {
> + case V4L2_STD_NTSC:
> + mode = INPUT_MODE_NTSC;
> + break;
> + case V4L2_STD_PAL:
> + mode = INPUT_MODE_PAL;
> + break;
> + case V4L2_STD_ATSC:
> + mode = INPUT_MODE_BT1120;
> + break;
> + default:
> + v4l2_err(&dev->v4l2_dev,
> + "std: %lld is not supported", std);
> + }
> + } else {
> + /* determine input mode by mbus_code (fmt_type) */
> + switch (stream->cif_fmt_in->fmt_type) {
> + case CIF_FMT_TYPE_YUV:
> + mode = INPUT_MODE_YUV;
> + break;
> + case CIF_FMT_TYPE_RAW:
> + mode = INPUT_MODE_RAW;
> + break;
> + }
> + }
> +
> + return mode;
> +}
> +
> +static inline u32 rkcif_scl_ctl(struct rkcif_stream *stream)
> +{
> + u32 fmt_type = stream->cif_fmt_in->fmt_type;
> +
> + return (fmt_type == CIF_FMT_TYPE_YUV) ?
> + ENABLE_YUV_16BIT_BYPASS : ENABLE_RAW_16BIT_BYPASS;
> +}
> +
> +static int rkcif_stream_start(struct rkcif_stream *stream)
> +{
> + u32 val, mbus_flags, href_pol, vsync_pol,
> + xfer_mode = 0, yc_swap = 0, skip_top = 0;
> + struct rkcif_device *dev = stream->cifdev;
> + struct rkcif_sensor_info *sensor_info;
> + void __iomem *base = dev->base_addr;
> +
> + sensor_info = &dev->sensor;
> + stream->frame_idx = 0;
> +
> + mbus_flags = sensor_info->mbus.flags;
> + href_pol = (mbus_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) ?
> + HSY_HIGH_ACTIVE : HSY_LOW_ACTIVE;
> + vsync_pol = (mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) ?
> + VSY_HIGH_ACTIVE : VSY_LOW_ACTIVE;
> +
> + if (rkcif_determine_input_mode(dev) == INPUT_MODE_BT1120) {
> + if (stream->cif_fmt_in->field == V4L2_FIELD_NONE)
> + xfer_mode = BT1120_TRANSMIT_PROGRESS;
> + else
> + xfer_mode = BT1120_TRANSMIT_INTERFACE;
> + if (!CIF_FETCH_IS_Y_FIRST(stream->cif_fmt_in->dvp_fmt_val))
> + yc_swap = BT1120_YC_SWAP;
> + }
> +
> + val = vsync_pol | href_pol | rkcif_determine_input_mode(dev) |
> + stream->cif_fmt_out->fmt_val | stream->cif_fmt_in->dvp_fmt_val |
> + xfer_mode | yc_swap;
> + write_cif_reg(base, CIF_FOR, val);
> + val = stream->pixm.width;
> + if (stream->cif_fmt_in->fmt_type == CIF_FMT_TYPE_RAW)
> + val = stream->pixm.width * 2;
> + write_cif_reg(base, CIF_VIR_LINE_WIDTH, val);
> + write_cif_reg(base, CIF_SET_SIZE,
> + stream->pixm.width | (stream->pixm.height << 16));
> +
> + v4l2_subdev_call(sensor_info->sd, sensor, g_skip_top_lines, &skip_top);
> +
> + write_cif_reg(base, CIF_CROP, skip_top << CIF_CROP_Y_SHIFT);
> + write_cif_reg(base, CIF_FRAME_STATUS, FRAME_STAT_CLS);
> + write_cif_reg(base, CIF_INTSTAT, INTSTAT_CLS);
> + write_cif_reg(base, CIF_SCL_CTRL, rkcif_scl_ctl(stream));
> +
> + rkcif_assign_new_buffer_oneframe(stream);
> +
> + write_cif_reg(base, CIF_INTEN, FRAME_END_EN | LINE_ERR_EN |
> + PST_INF_FRAME_END);
> +
> + if (dev->data->chip_id == CHIP_RK1808_CIF &&
> + rkcif_determine_input_mode(dev) == INPUT_MODE_BT1120)
> + write_cif_reg(base, CIF_CTRL,
> + AXI_BURST_16 | MODE_PINGPONG | ENABLE_CAPTURE);
> + else
> + write_cif_reg(base, CIF_CTRL,
> + AXI_BURST_16 | MODE_ONEFRAME | ENABLE_CAPTURE);
> +
> + stream->state = RKCIF_STATE_STREAMING;
> +
> + return 0;
> +}
> +
> +static int rkcif_start_streaming(struct vb2_queue *queue, unsigned int count)
> +{
> + struct rkcif_stream *stream = queue->drv_priv;
> + struct rkcif_device *dev = stream->cifdev;
> + struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
> + struct v4l2_subdev *sd;
> + int ret;
> +
> + if (WARN_ON(stream->state != RKCIF_STATE_READY)) {
> + ret = -EBUSY;
> + v4l2_err(v4l2_dev, "stream in busy state\n");
> + goto destroy_buf;
> + }
> +
> + stream->cif_fmt_in = get_input_fmt(dev->sensor.sd);
> +
> + ret = rkcif_create_dummy_buf(stream);
> + if (ret < 0) {
> + v4l2_err(v4l2_dev, "Failed to create dummy_buf, %d\n", ret);
> + goto destroy_buf;
> + }
> +
> + ret = pm_runtime_get_sync(dev->dev);
> + if (ret < 0) {
> + v4l2_err(v4l2_dev, "Failed to get runtime pm, %d\n", ret);
> + goto destroy_dummy_buf;
> + }
> +
> + /* start sub-devices */
> + sd = dev->sensor.sd;
> + ret = v4l2_subdev_call(sd, core, s_power, 1);
> + if (ret < 0 && ret != -ENOIOCTLCMD)
> + goto runtime_put;
> + ret = v4l2_subdev_call(sd, video, s_stream, 1);
> + if (ret < 0)
> + goto subdev_poweroff;
> +
> + ret = rkcif_stream_start(stream);
> + if (ret < 0)
> + goto stop_stream;
> +
> + return 0;
> +
> +stop_stream:
> + rkcif_stream_stop(stream);
> +subdev_poweroff:
> + v4l2_subdev_call(sd, core, s_power, 0);
> +runtime_put:
> + pm_runtime_put(dev->dev);
> +destroy_dummy_buf:
> + rkcif_destroy_dummy_buf(stream);
> +destroy_buf:
> + while (!list_empty(&stream->buf_head)) {
> + struct rkcif_buffer *buf;
> +
> + buf = list_first_entry(&stream->buf_head,
> + struct rkcif_buffer, queue);
> + list_del(&buf->queue);
> + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
> + }
> +
> + return ret;
> +}
> +
> +static struct vb2_ops rkcif_vb2_ops = {
> + .queue_setup = rkcif_queue_setup,
> + .buf_queue = rkcif_buf_queue,
> + .wait_prepare = vb2_ops_wait_prepare,
> + .wait_finish = vb2_ops_wait_finish,
> + .stop_streaming = rkcif_stop_streaming,
> + .start_streaming = rkcif_start_streaming,
> +};
> +
> +static int rkcif_init_vb2_queue(struct vb2_queue *q,
> + struct rkcif_stream *stream,
> + enum v4l2_buf_type buf_type)
> +{
> + q->type = buf_type;
> + q->io_modes = VB2_MMAP | VB2_DMABUF;
> + q->drv_priv = stream;
> + q->ops = &rkcif_vb2_ops;
> + q->mem_ops = &vb2_dma_contig_memops;
> + q->buf_struct_size = sizeof(struct rkcif_buffer);
> + q->min_buffers_needed = CIF_REQ_BUFS_MIN;
> + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
> + q->lock = &stream->vlock;
> + q->dev = stream->cifdev->dev;
> +
> + return vb2_queue_init(q);
> +}
> +
> +static void rkcif_set_fmt(struct rkcif_stream *stream,
> + struct v4l2_pix_format_mplane *pixm,
> + bool try)
> +{
> + const struct cif_output_fmt *fmt;
> + struct v4l2_rect input_rect;
> + unsigned int imagesize = 0, planes;
> + u32 xsubs = 1, ysubs = 1, i;
> +
> + fmt = find_output_fmt(stream, pixm->pixelformat);
> + if (!fmt)
> + fmt = &out_fmts[0];
> +
> + input_rect.width = CIF_MAX_WIDTH;
> + input_rect.height = CIF_MAX_HEIGHT;
> +
> + pixm->width = clamp_t(u32, pixm->width,
> + CIF_MIN_WIDTH, input_rect.width);
> + pixm->height = clamp_t(u32, pixm->height,
> + CIF_MIN_HEIGHT, input_rect.height);
> +
> + pixm->num_planes = fmt->mplanes;
> + pixm->quantization = V4L2_QUANTIZATION_DEFAULT;
> + pixm->colorspace = V4L2_COLORSPACE_SRGB;
> +
> + pixm->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pixm->colorspace);
> + pixm->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pixm->colorspace);
> +
> + pixm->pixelformat = fmt->fourcc;
> + pixm->field = V4L2_FIELD_NONE;
> +
> + /* calculate plane size and image size */
> + fcc_xysubs(fmt->fourcc, &xsubs, &ysubs);
> +
> + planes = fmt->cplanes ? fmt->cplanes : fmt->mplanes;
> +
> + for (i = 0; i < planes; i++) {
> + struct v4l2_plane_pix_format *plane_fmt;
> + int width, height, bpl, size;
> +
> + if (i == 0) {
> + width = pixm->width;
> + height = pixm->height;
> + } else {
> + width = pixm->width / xsubs;
> + height = pixm->height / ysubs;
> + }
> +
> + bpl = width * fmt->bpp[i] / 8;
> + size = bpl * height;
> + imagesize += size;
> +
> + if (fmt->mplanes > i) {
> + /* Set bpl and size for each mplane */
> + plane_fmt = pixm->plane_fmt + i;
> + plane_fmt->bytesperline = bpl;
> + plane_fmt->sizeimage = size;
> + }
> + }
> +
> + /* convert to non-MPLANE format.
> + * It's important since we want to unify non-MPLANE
> + * and MPLANE.
> + */
> + if (fmt->mplanes == 1)
> + pixm->plane_fmt[0].sizeimage = imagesize;
> +
> + if (!try) {
> + stream->cif_fmt_out = fmt;
> + stream->pixm = *pixm;
> + }
> +}
> +
> +void rkcif_stream_init(struct rkcif_device *dev)
> +{
> + struct rkcif_stream *stream = &dev->stream;
> + struct v4l2_pix_format_mplane pixm;
> +
> + memset(stream, 0, sizeof(*stream));
> + memset(&pixm, 0, sizeof(pixm));
> + stream->cifdev = dev;
> +
> + INIT_LIST_HEAD(&stream->buf_head);
> + spin_lock_init(&stream->vbq_lock);
> + stream->state = RKCIF_STATE_READY;
> + init_waitqueue_head(&stream->wq_stopped);
> +
> + /* Set default format */
> + pixm.pixelformat = V4L2_PIX_FMT_NV12;
> + pixm.width = RKCIF_DEFAULT_WIDTH;
> + pixm.height = RKCIF_DEFAULT_HEIGHT;
> + rkcif_set_fmt(stream, &pixm, false);
> +
> + stream->crop.left = 0;
> + stream->crop.top = 0;
> + stream->crop.width = 10;
> + stream->crop.height = 10;
> +}
> +
> +static int rkcif_fh_open(struct file *filp)
> +{
> + struct video_device *vdev = video_devdata(filp);
> + struct rkcif_stream *stream = to_rkcif_stream(vdev);
> + struct rkcif_device *cifdev = stream->cifdev;
> +
> + rkcif_soft_reset(cifdev);
> +
> + return v4l2_fh_open(filp);
> +}
> +
> +static const struct v4l2_file_operations rkcif_fops = {
> + .open = rkcif_fh_open,
> + .release = vb2_fop_release,
> + .unlocked_ioctl = video_ioctl2,
> + .poll = vb2_fop_poll,
> + .mmap = vb2_fop_mmap,
> +};
> +
> +static int rkcif_enum_input(struct file *file, void *priv,
> + struct v4l2_input *input)
> +{
> + if (input->index > 0)
> + return -EINVAL;
> +
> + input->type = V4L2_INPUT_TYPE_CAMERA;
> + strlcpy(input->name, "Camera", sizeof(input->name));
> +
> + return 0;
> +}
> +
> +static int rkcif_try_fmt_vid_cap_mplane(struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct rkcif_stream *stream = video_drvdata(file);
> +
> + rkcif_set_fmt(stream, &f->fmt.pix_mp, true);
> +
> + return 0;
> +}
> +
> +static int rkcif_enum_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + const struct cif_output_fmt *fmt = NULL;
> +
> + if (f->index >= ARRAY_SIZE(out_fmts))
> + return -EINVAL;
> +
> + fmt = &out_fmts[f->index];
> + f->pixelformat = fmt->fourcc;
> +
> + return 0;
> +}
> +
> +static int rkcif_s_fmt_vid_cap_mplane(struct file *file,
> + void *priv, struct v4l2_format *f)
> +{
> + struct rkcif_stream *stream = video_drvdata(file);
> +
> + rkcif_set_fmt(stream, &f->fmt.pix_mp, false);
> +
> + return 0;
> +}
> +
> +static int rkcif_g_fmt_vid_cap_mplane(struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct rkcif_stream *stream = video_drvdata(file);
> +
> + f->fmt.pix_mp = stream->pixm;
> +
> + return 0;
> +}
> +
> +static int rkcif_querycap(struct file *file, void *priv,
> + struct v4l2_capability *cap)
> +{
> + struct rkcif_stream *stream = video_drvdata(file);
> + struct device *dev = stream->cifdev->dev;
> +
> + strlcpy(cap->driver, dev->driver->name, sizeof(cap->driver));
> + strlcpy(cap->card, dev->driver->name, sizeof(cap->card));
> + snprintf(cap->bus_info, sizeof(cap->bus_info),
> + "platform:%s", dev_name(dev));
> +
> + return 0;
> +}
> +
> +static int rkcif_enum_framesizes(struct file *file, void *fh,
> + struct v4l2_frmsizeenum *fsize)
> +{
> + struct rkcif_stream *stream = video_drvdata(file);
> + struct rkcif_device *dev = stream->cifdev;
> + struct v4l2_subdev_frame_size_enum fse = {
> + .index = fsize->index,
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> + };
> + const struct cif_output_fmt *fmt;
> + int ret;
> +
> + if (!dev->sensor.sd)
> + return -EINVAL;
> +
> + fmt = find_output_fmt(stream, fsize->pixel_format);
> + if (!fmt)
> + return -EINVAL;
> +
> + fse.code = fmt->mbus;
> +
> + ret = v4l2_subdev_call(dev->sensor.sd, pad, enum_frame_size,
> + NULL, &fse);
> + if (ret)
> + return ret;
> +
> + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
> + fsize->discrete.width = fse.max_width;
> + fsize->discrete.height = fse.max_height;
> +
> + return 0;
> +}
> +
> +static int rkcif_g_input(struct file *file, void *fh, unsigned int *i)
> +{
> + *i = 0;
> + return 0;
> +}
> +
> +static int rkcif_s_input(struct file *file, void *fh, unsigned int i)
> +{
> + if (i)
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> +static const struct v4l2_ioctl_ops rkcif_v4l2_ioctl_ops = {
> + .vidioc_reqbufs = vb2_ioctl_reqbufs,
> + .vidioc_querybuf = vb2_ioctl_querybuf,
> + .vidioc_create_bufs = vb2_ioctl_create_bufs,
> + .vidioc_qbuf = vb2_ioctl_qbuf,
> + .vidioc_expbuf = vb2_ioctl_expbuf,
> + .vidioc_dqbuf = vb2_ioctl_dqbuf,
> + .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
> + .vidioc_streamon = vb2_ioctl_streamon,
> + .vidioc_streamoff = vb2_ioctl_streamoff,
> +
> + .vidioc_enum_fmt_vid_cap = rkcif_enum_fmt_vid_cap,
> + .vidioc_try_fmt_vid_cap_mplane = rkcif_try_fmt_vid_cap_mplane,
> + .vidioc_s_fmt_vid_cap_mplane = rkcif_s_fmt_vid_cap_mplane,
> + .vidioc_g_fmt_vid_cap_mplane = rkcif_g_fmt_vid_cap_mplane,
> + .vidioc_querycap = rkcif_querycap,
> + .vidioc_enum_framesizes = rkcif_enum_framesizes,
> +
> + .vidioc_enum_input = rkcif_enum_input,
> + .vidioc_g_input = rkcif_g_input,
> + .vidioc_s_input = rkcif_s_input,
> +};
> +
> +void rkcif_unregister_stream_vdev(struct rkcif_device *dev)
> +{
> + struct rkcif_stream *stream = &dev->stream;
> +
> + media_entity_cleanup(&stream->vdev.entity);
> + video_unregister_device(&stream->vdev);
> +}
> +
> +int rkcif_register_stream_vdev(struct rkcif_device *dev)
> +{
> + struct rkcif_stream *stream = &dev->stream;
> + struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
> + struct video_device *vdev = &stream->vdev;
> + int ret;
> +
> + strlcpy(vdev->name, CIF_VIDEODEVICE_NAME, sizeof(vdev->name));
> + mutex_init(&stream->vlock);
> +
> + vdev->ioctl_ops = &rkcif_v4l2_ioctl_ops;
> + vdev->release = video_device_release_empty;
> + vdev->fops = &rkcif_fops;
> + vdev->minor = -1;
> + vdev->v4l2_dev = v4l2_dev;
> + vdev->lock = &stream->vlock;
> + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
> + V4L2_CAP_STREAMING;
> + video_set_drvdata(vdev, stream);
> + vdev->vfl_dir = VFL_DIR_RX;
> + stream->pad.flags = MEDIA_PAD_FL_SINK;
> +
> + rkcif_init_vb2_queue(&stream->buf_queue, stream,
> + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE |
> + V4L2_BUF_TYPE_VIDEO_CAPTURE);
> + vdev->queue = &stream->buf_queue;
> + strscpy(vdev->name, KBUILD_MODNAME, sizeof(vdev->name));
> +
> + ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
> + if (ret < 0) {
> + v4l2_err(v4l2_dev,
> + "video_register_device failed with error %d\n", ret);
> + return ret;
> + }
> +
> + ret = media_entity_pads_init(&vdev->entity, 1, &stream->pad);
> + if (ret < 0)
> + goto unreg;
> +
> + return 0;
> +unreg:
> + video_unregister_device(vdev);
> + return ret;
> +}
> +
> +static void rkcif_vb_done_oneframe(struct rkcif_stream *stream,
> + struct vb2_v4l2_buffer *vb_done)
> +{
> + const struct cif_output_fmt *fmt = stream->cif_fmt_out;
> + u32 i;
> +
> + /* Dequeue a filled buffer */
> + for (i = 0; i < fmt->mplanes; i++) {
> + vb2_set_plane_payload(&vb_done->vb2_buf, i,
> + stream->pixm.plane_fmt[i].sizeimage);
> + }
> + vb_done->vb2_buf.timestamp = ktime_get_ns();
> + vb2_buffer_done(&vb_done->vb2_buf, VB2_BUF_STATE_DONE);
> +}
> +
> +void rkcif_irq_oneframe(struct rkcif_device *cif_dev)
> +{
> + struct rkcif_stream *stream = &cif_dev->stream;
> + u32 lastline, lastpix, ctl, cif_frmst, intstat;
> + void __iomem *base = cif_dev->base_addr;
> +
> + intstat = read_cif_reg(base, CIF_INTSTAT);
> + cif_frmst = read_cif_reg(base, CIF_FRAME_STATUS);
> + lastline = CIF_FETCH_Y_LAST_LINE(read_cif_reg(base, CIF_LAST_LINE));
> + lastpix = read_cif_reg(base, CIF_LAST_PIX);
> + ctl = read_cif_reg(base, CIF_CTRL);
> +
> + /* There are two irqs enabled:
> + * - PST_INF_FRAME_END: cif FIFO is ready, this is prior to FRAME_END
> + * - FRAME_END: cif has saved frame to memory, a frame ready
> + */
> +
> + if ((intstat & PST_INF_FRAME_END)) {
> + write_cif_reg(base, CIF_INTSTAT, PST_INF_FRAME_END_CLR);
> +
> + if (stream->stopping)
> + /* To stop CIF ASAP, before FRAME_END irq */
> + write_cif_reg(base, CIF_CTRL, ctl & (~ENABLE_CAPTURE));
> + }
> +
> + if ((intstat & LINE_ERR)) {
> + write_cif_reg(base, CIF_INTSTAT, LINE_ERR_CLR);
> +
> + if (stream->stopping) {
> + rkcif_stream_stop(stream);
> + stream->stopping = false;
> + wake_up(&stream->wq_stopped);
> + return;
> + }
> +
> + v4l2_err(&cif_dev->v4l2_dev,
> + "Bad frame, irq:0x%x frmst:0x%x size:%dx%d\n",
> + intstat, cif_frmst, lastline, lastpix);
> + /* Clear status to receive into the same buffer */
> + write_cif_reg(base, CIF_FRAME_STATUS, FRM0_STAT_CLS);
> + return;
> + }
> +
> +
> + if ((intstat & FRAME_END)) {
> + struct vb2_v4l2_buffer *vb_done = NULL;
> +
> + write_cif_reg(base, CIF_INTSTAT, FRAME_END_CLR);
> +
> + if (stream->stopping) {
> + rkcif_stream_stop(stream);
> + stream->stopping = false;
> + wake_up(&stream->wq_stopped);
> + return;
> + }
> +
> + if (lastline != stream->pixm.height ||
> + !(cif_frmst & CIF_F0_READY)) {
> + v4l2_err(&cif_dev->v4l2_dev,
> + "Bad frame, irq:0x%x frmst:0x%x size:%dx%d\n",
> + intstat, cif_frmst, lastline, lastpix);
> + /* Clear status to receive into the same buffer */
> + write_cif_reg(base, CIF_FRAME_STATUS, FRM0_STAT_CLS);
> + return;
> + }
> +
> + if (stream->curr_buf)
> + vb_done = &stream->curr_buf->vb;
> + rkcif_assign_new_buffer_oneframe(stream);
> +
> + /* In one-frame mode, must clear status manually to enable
> + * the next frame end irq
> + */
> + write_cif_reg(base, CIF_FRAME_STATUS, FRM0_STAT_CLS);
> +
> + if (vb_done)
> + rkcif_vb_done_oneframe(stream, vb_done);
> +
> + stream->frame_idx++;
> + }
> +}
> diff --git a/drivers/media/platform/rockchip/cif/dev.c b/drivers/media/platform/rockchip/cif/dev.c
> new file mode 100644
> index 000000000000..dbd5fdbd1cef
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/cif/dev.c
> @@ -0,0 +1,358 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Rockchip CIF Driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/interrupt.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_graph.h>
> +#include <linux/of_platform.h>
> +#include <linux/of_reserved_mem.h>
> +#include <linux/reset.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/pinctrl/consumer.h>
> +#include <media/v4l2-fwnode.h>
> +
> +#include "dev.h"
> +#include "regs.h"
> +
> +#define RKCIF_VERNO_LEN 10
> +
> +static int rkcif_create_links(struct rkcif_device *dev)
> +{
> + struct v4l2_subdev *sd = dev->sensor.sd;
> + int ret;
> +
> + ret = media_entity_get_fwnode_pad(&sd->entity, sd->fwnode,
> + MEDIA_PAD_FL_SOURCE);
> + if (ret)
> + return ret;
> +
> + ret = media_create_pad_link(&sd->entity, 0,
> + &dev->stream.vdev.entity, 0,
> + MEDIA_LNK_FL_ENABLED);
> + if (ret) {
> + dev_err(dev->dev, "failed to create link");
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int subdev_notifier_complete(struct v4l2_async_notifier *notifier)
> +{
> + struct rkcif_device *dev;
> + int ret;
> +
> + dev = container_of(notifier, struct rkcif_device, notifier);
> +
> + mutex_lock(&dev->media_dev.graph_mutex);
> +
> + ret = rkcif_create_links(dev);
> + if (ret < 0)
> + goto unlock;
> +
> + ret = v4l2_device_register_subdev_nodes(&dev->v4l2_dev);
> + if (ret < 0)
> + goto unlock;
> +
> +unlock:
> + mutex_unlock(&dev->media_dev.graph_mutex);
> + return ret;
> +}
> +
> +static int subdev_notifier_bound(struct v4l2_async_notifier *notifier,
> + struct v4l2_subdev *subdev,
> + struct v4l2_async_subdev *asd)
> +{
> + struct rkcif_device *cif_dev = container_of(notifier,
> + struct rkcif_device, notifier);
> +
> + int pad;
> +
> + cif_dev->sensor.sd = subdev;
> + pad = media_entity_get_fwnode_pad(&subdev->entity, subdev->fwnode,
> + MEDIA_PAD_FL_SOURCE);
> + if (pad < 0)
> + return pad;
> +
> + cif_dev->sensor.pad = pad;
> +
> + return 0;
> +}
> +
> +static const struct v4l2_async_notifier_operations subdev_notifier_ops = {
> + .bound = subdev_notifier_bound,
> + .complete = subdev_notifier_complete,
> +};
> +
> +static int cif_subdev_notifier(struct rkcif_device *cif_dev)
> +{
> + struct v4l2_async_notifier *ntf = &cif_dev->notifier;
> + struct device *dev = cif_dev->dev;
> + struct v4l2_fwnode_endpoint vep = {
> + .bus_type = V4L2_MBUS_PARALLEL,
> + };
> + struct fwnode_handle *ep;
> + int ret;
> +
> + v4l2_async_notifier_init(ntf);
> +
> + ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0,
> + FWNODE_GRAPH_ENDPOINT_NEXT);
> + if (!ep)
> + return -EINVAL;
> +
> + ret = v4l2_fwnode_endpoint_parse(ep, &vep);
> + if (ret)
> + return ret;
> +
> + ret = v4l2_async_notifier_add_fwnode_remote_subdev(ntf, ep,
> + &cif_dev->asd);
> + if (ret)
> + return ret;
> +
> + ntf->ops = &subdev_notifier_ops;
> +
> + fwnode_handle_put(ep);
> +
> + ret = v4l2_async_notifier_register(&cif_dev->v4l2_dev, ntf);
> + return ret;
you can replace the two lines above with 'return v4l2_async_notifier_register(&cif_dev->v4l2_dev, ntf);'
> +}
> +
> +static int rkcif_register_platform_subdevs(struct rkcif_device *cif_dev)
> +{
> + int ret;
> +
> + ret = rkcif_register_stream_vdev(cif_dev);
> + if (ret < 0)
> + return ret;
> +
> + ret = cif_subdev_notifier(cif_dev);
> + if (ret < 0) {
> + v4l2_err(&cif_dev->v4l2_dev,
> + "Failed to register subdev notifier(%d)\n", ret);
> + rkcif_unregister_stream_vdev(cif_dev);
maybe forgot to return 'ret' here?
Thanks,
Dafna
> + }
> +
> + return 0;
> +}
> +
> +static struct clk_bulk_data px30_cif_clks[] = {
> + { .id = "aclk" },
> + { .id = "hclk" },
> + { .id = "pclkin" },
> +};
> +
> +static const struct cif_match_data px30_cif_match_data = {
> + .chip_id = CHIP_PX30_CIF,
> + .clks = px30_cif_clks,
> + .clks_num = ARRAY_SIZE(px30_cif_clks),
> +};
> +
> +static const struct of_device_id rkcif_plat_of_match[] = {
> + {
> + .compatible = "rockchip,px30-cif",
> + .data = &px30_cif_match_data,
> + },
> + {},
> +};
> +
> +static irqreturn_t rkcif_irq_handler(int irq, void *ctx)
> +{
> + struct device *dev = ctx;
> + struct rkcif_device *cif_dev = dev_get_drvdata(dev);
> +
> + rkcif_irq_oneframe(cif_dev);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static void rkcif_disable_sys_clk(struct rkcif_device *cif_dev)
> +{
> + int i;
> +
> + for (i = cif_dev->data->clks_num - 1; i >= 0; i--)
> + clk_disable_unprepare(cif_dev->clks[i]);
> +}
> +
> +static int rkcif_enable_sys_clk(struct rkcif_device *cif_dev)
> +{
> + int i, ret = -EINVAL;
> +
> + for (i = 0; i < cif_dev->data->clks_num; i++) {
> + ret = clk_prepare_enable(cif_dev->clks[i]);
> +
> + if (ret < 0)
> + goto err;
> + }
> +
> + return 0;
> +
> +err:
> + for (--i; i >= 0; --i)
> + clk_disable_unprepare(cif_dev->clks[i]);
> +
> + return ret;
> +}
> +
> +void rkcif_soft_reset(struct rkcif_device *cif_dev)
> +{
> + reset_control_assert(cif_dev->cif_rst);
> +
> + udelay(5);
> +
> + reset_control_deassert(cif_dev->cif_rst);
> +}
> +
> +static int rkcif_plat_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct v4l2_device *v4l2_dev;
> + struct rkcif_device *cif_dev;
> + const struct cif_match_data *data;
> + int ret, irq;
> +
> + cif_dev = devm_kzalloc(dev, sizeof(*cif_dev), GFP_KERNEL);
> + if (!cif_dev)
> + return -ENOMEM;
> +
> + dev_set_drvdata(dev, cif_dev);
> + cif_dev->dev = dev;
> +
> + data = of_device_get_match_data(&pdev->dev);
> + if (!data)
> + return -EINVAL;
> +
> + cif_dev->data = data;
> +
> + irq = platform_get_irq(pdev, 0);
> + if (irq < 0)
> + return irq;
> +
> + ret = devm_request_irq(dev, irq, rkcif_irq_handler, IRQF_SHARED,
> + dev_driver_string(dev), dev);
> + if (ret < 0) {
> + dev_err(dev, "request irq failed: %d\n", ret);
> + return ret;
> + }
> +
> + cif_dev->irq = irq;
> +
> + cif_dev->base_addr = devm_platform_ioremap_resource(pdev, 0);
> + if (IS_ERR(cif_dev->base_addr))
> + return PTR_ERR(cif_dev->base_addr);
> +
> + ret = of_reserved_mem_device_init(dev);
> + if (ret)
> + v4l2_info(v4l2_dev, "No reserved memory region assign to CIF\n");
> +
> + ret = devm_clk_bulk_get(dev, data->clks_num, data->clks);
> + if (ret)
> + return ret;
> +
> + cif_dev->cif_rst = devm_reset_control_array_get(dev, false, false);
> + if (IS_ERR(cif_dev->cif_rst))
> + return PTR_ERR(cif_dev->cif_rst);
> +
> + /* Initialize the stream */
> + rkcif_stream_init(cif_dev);
> +
> + strlcpy(cif_dev->media_dev.model, "rkcif",
> + sizeof(cif_dev->media_dev.model));
> + cif_dev->media_dev.dev = &pdev->dev;
> + v4l2_dev = &cif_dev->v4l2_dev;
> + v4l2_dev->mdev = &cif_dev->media_dev;
> + strlcpy(v4l2_dev->name, "rkcif", sizeof(v4l2_dev->name));
> + v4l2_ctrl_handler_init(&cif_dev->ctrl_handler, 8);
> + v4l2_dev->ctrl_handler = &cif_dev->ctrl_handler;
> +
> + ret = v4l2_device_register(cif_dev->dev, &cif_dev->v4l2_dev);
> + if (ret < 0)
> + return ret;
> +
> + media_device_init(&cif_dev->media_dev);
> +
> + ret = media_device_register(&cif_dev->media_dev);
> + if (ret < 0) {
> + v4l2_err(v4l2_dev, "Failed to register media device: %d\n",
> + ret);
> + goto err_unreg_v4l2_dev;
> + }
> +
> + /* create & register platefom subdev (from of_node) */
> + ret = rkcif_register_platform_subdevs(cif_dev);
> + if (ret < 0)
> + goto err_unreg_media_dev;
> +
> + pm_runtime_enable(&pdev->dev);
> +
> + return 0;
> +
> +err_unreg_media_dev:
> + media_device_unregister(&cif_dev->media_dev);
> +err_unreg_v4l2_dev:
> + v4l2_device_unregister(&cif_dev->v4l2_dev);
> + return ret;
> +}
> +
> +static int rkcif_plat_remove(struct platform_device *pdev)
> +{
> + struct rkcif_device *cif_dev = platform_get_drvdata(pdev);
> +
> + pm_runtime_disable(&pdev->dev);
> +
> + media_device_unregister(&cif_dev->media_dev);
> + v4l2_device_unregister(&cif_dev->v4l2_dev);
> + rkcif_unregister_stream_vdev(cif_dev);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused rkcif_runtime_suspend(struct device *dev)
> +{
> + struct rkcif_device *cif_dev = dev_get_drvdata(dev);
> +
> + rkcif_disable_sys_clk(cif_dev);
> +
> + return pinctrl_pm_select_sleep_state(dev);
> +}
> +
> +static int __maybe_unused rkcif_runtime_resume(struct device *dev)
> +{
> + struct rkcif_device *cif_dev = dev_get_drvdata(dev);
> + int ret;
> +
> + ret = pinctrl_pm_select_default_state(dev);
> + if (ret < 0)
> + return ret;
> + rkcif_enable_sys_clk(cif_dev);
> +
> + return 0;
> +}
> +
> +static const struct dev_pm_ops rkcif_plat_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> + pm_runtime_force_resume)
> + SET_RUNTIME_PM_OPS(rkcif_runtime_suspend, rkcif_runtime_resume, NULL)
> +};
> +
> +static struct platform_driver rkcif_plat_drv = {
> + .driver = {
> + .name = CIF_DRIVER_NAME,
> + .of_match_table = of_match_ptr(rkcif_plat_of_match),
> + .pm = &rkcif_plat_pm_ops,
> + },
> + .probe = rkcif_plat_probe,
> + .remove = rkcif_plat_remove,
> +};
> +
> +module_platform_driver(rkcif_plat_drv);
> +MODULE_AUTHOR("Rockchip Camera/ISP team");
> +MODULE_DESCRIPTION("Rockchip CIF platform driver");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/media/platform/rockchip/cif/dev.h b/drivers/media/platform/rockchip/cif/dev.h
> new file mode 100644
> index 000000000000..2126c2220ad2
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/cif/dev.h
> @@ -0,0 +1,213 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Rockchip CIF Driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + */
> +
> +#ifndef _RKCIF_DEV_H
> +#define _RKCIF_DEV_H
> +
> +#include <linux/mutex.h>
> +#include <media/media-device.h>
> +#include <media/media-entity.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/videobuf2-v4l2.h>
> +
> +#define CIF_DRIVER_NAME "rkcif"
> +#define CIF_VIDEODEVICE_NAME "stream_cif"
> +
> +#define RKCIF_MAX_BUS_CLK 8
> +#define RKCIF_MAX_SENSOR 2
> +#define RKCIF_MAX_RESET 5
> +#define RKCIF_MAX_CSI_CHANNEL 4
> +
> +#define RKCIF_DEFAULT_WIDTH 640
> +#define RKCIF_DEFAULT_HEIGHT 480
> +
> +#define write_cif_reg(base, addr, val) writel(val, (addr) + (base))
> +#define read_cif_reg(base, addr) readl((addr) + (base))
> +
> +#define write_csihost_reg(base, addr, val) writel(val, (addr) + (base))
> +#define read_csihost_reg(base, addr) readl((addr) + (base))
> +
> +enum rkcif_state {
> + RKCIF_STATE_DISABLED,
> + RKCIF_STATE_READY,
> + RKCIF_STATE_STREAMING
> +};
> +
> +enum rkcif_chip_id {
> + CHIP_PX30_CIF,
> + CHIP_RK1808_CIF,
> + CHIP_RK3128_CIF,
> + CHIP_RK3288_CIF
> +};
> +
> +enum host_type_t {
> + RK_CSI_RXHOST,
> + RK_DSI_RXHOST
> +};
> +
> +struct rkcif_buffer {
> + struct vb2_v4l2_buffer vb;
> + struct list_head queue;
> + union {
> + u32 buff_addr[VIDEO_MAX_PLANES];
> + void *vaddr[VIDEO_MAX_PLANES];
> + };
> +};
> +
> +struct rkcif_dummy_buffer {
> + void *vaddr;
> + dma_addr_t dma_addr;
> + u32 size;
> +};
> +
> +extern int rkcif_debug;
> +
> +static inline struct rkcif_buffer *to_rkcif_buffer(struct vb2_v4l2_buffer *vb)
> +{
> + return container_of(vb, struct rkcif_buffer, vb);
> +}
> +
> +/*
> + * struct rkcif_sensor_info - Sensor infomations
> + * @mbus: media bus configuration
> + */
> +struct rkcif_sensor_info {
> + struct v4l2_subdev *sd;
> + int pad;
> + struct v4l2_mbus_config mbus;
> + int lanes;
> +};
> +
> +/*
> + * struct cif_output_fmt - The output format
> + *
> + * @fourcc: pixel format in fourcc
> + * @cplanes: number of colour planes
> + * @fmt_val: the fmt val corresponding to CIF_FOR register
> + * @bpp: bits per pixel for each cplanes
> + */
> +struct cif_output_fmt {
> + u32 fourcc;
> + u32 mbus;
> + u8 cplanes;
> + u8 mplanes;
> + u32 fmt_val;
> + u8 bpp[VIDEO_MAX_PLANES];
> +};
> +
> +enum cif_fmt_type {
> + CIF_FMT_TYPE_YUV = 0,
> + CIF_FMT_TYPE_RAW,
> +};
> +
> +/*
> + * struct cif_input_fmt - The input mbus format from sensor
> + *
> + * @mbus_code: mbus format
> + * @dvp_fmt_val: the fmt val corresponding to CIF_FOR register
> + * @csi_fmt_val: the fmt val corresponding to CIF_CSI_ID_CTRL
> + * @field: the field type of the input from sensor
> + */
> +struct cif_input_fmt {
> + u32 mbus_code;
> + u32 dvp_fmt_val;
> + u32 csi_fmt_val;
> + enum cif_fmt_type fmt_type;
> + enum v4l2_field field;
> +};
> +
> +/*
> + * struct rkcif_stream - Stream states TODO
> + *
> + * @vbq_lock: lock to protect buf_queue
> + * @buf_queue: queued buffer list
> + * @dummy_buf: dummy space to store dropped data
> + *
> + * rkcif use shadowsock registers, so it need two buffer at a time
> + * @curr_buf: the buffer used for current frame
> + * @next_buf: the buffer used for next frame
> + */
> +struct rkcif_stream {
> + struct rkcif_device *cifdev;
> + enum rkcif_state state;
> + bool stopping;
> + wait_queue_head_t wq_stopped;
> + int frame_idx;
> + int frame_phase;
> +
> + /* lock between irq and buf_queue */
> + spinlock_t vbq_lock;
> + struct vb2_queue buf_queue;
> + struct list_head buf_head;
> + struct rkcif_dummy_buffer dummy_buf;
> + struct rkcif_buffer *curr_buf;
> + struct rkcif_buffer *next_buf;
> +
> + /* vfd lock */
> + struct mutex vlock;
> + struct video_device vdev;
> + /* TODO: pad for dvp and mipi separately? */
> + struct media_pad pad;
> +
> + const struct cif_output_fmt *cif_fmt_out;
> + const struct cif_input_fmt *cif_fmt_in;
> + struct v4l2_pix_format_mplane pixm;
> + struct v4l2_rect crop;
> + int crop_enable;
> +};
> +
> +static inline struct rkcif_stream *to_rkcif_stream(struct video_device *vdev)
> +{
> + return container_of(vdev, struct rkcif_stream, vdev);
> +}
> +
> +struct cif_match_data {
> + int chip_id;
> + struct clk_bulk_data *clks;
> + int clks_num;
> +};
> +
> +/*
> + * struct rkcif_device - ISP platform device
> + * @base_addr: base register address
> + * @active_sensor: sensor in-use, set when streaming on
> + * @stream: capture video device
> + */
> +struct rkcif_device {
> + struct list_head list;
> + struct device *dev;
> + int irq;
> + void __iomem *base_addr;
> + void __iomem *csi_base;
> + struct clk *clks[RKCIF_MAX_BUS_CLK];
> + int clk_size;
> + struct vb2_alloc_ctx *alloc_ctx;
> + bool iommu_en;
> + struct iommu_domain *domain;
> + struct reset_control *cif_rst;
> +
> + struct v4l2_device v4l2_dev;
> + struct media_device media_dev;
> + struct v4l2_ctrl_handler ctrl_handler;
> + struct v4l2_async_notifier notifier;
> + struct v4l2_async_subdev asd;
> + struct rkcif_sensor_info sensor;
> +
> + struct rkcif_stream stream;
> + const struct cif_match_data *data;
> +};
> +
> +void rkcif_unregister_stream_vdev(struct rkcif_device *dev);
> +int rkcif_register_stream_vdev(struct rkcif_device *dev);
> +void rkcif_stream_init(struct rkcif_device *dev);
> +
> +void rkcif_irq_oneframe(struct rkcif_device *cif_dev);
> +void rkcif_irq_pingpong(struct rkcif_device *cif_dev);
> +void rkcif_soft_reset(struct rkcif_device *cif_dev);
> +
> +#endif
> diff --git a/drivers/media/platform/rockchip/cif/regs.h b/drivers/media/platform/rockchip/cif/regs.h
> new file mode 100644
> index 000000000000..5e0f926c70d3
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/cif/regs.h
> @@ -0,0 +1,256 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Rockchip CIF Driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + */
> +
> +#ifndef _RKCIF_REGS_H
> +#define _RKCIF_REGS_H
> +
> +/* CIF Reg Offset */
> +#define CIF_CTRL 0x00
> +#define CIF_INTEN 0x04
> +#define CIF_INTSTAT 0x08
> +#define CIF_FOR 0x0c
> +#define CIF_LINE_NUM_ADDR 0x10
> +#define CIF_FRM0_ADDR_Y 0x14
> +#define CIF_FRM0_ADDR_UV 0x18
> +#define CIF_FRM1_ADDR_Y 0x1c
> +#define CIF_FRM1_ADDR_UV 0x20
> +#define CIF_VIR_LINE_WIDTH 0x24
> +#define CIF_SET_SIZE 0x28
> +#define CIF_SCM_ADDR_Y 0x2c
> +#define CIF_SCM_ADDR_U 0x30
> +#define CIF_SCM_ADDR_V 0x34
> +#define CIF_WB_UP_FILTER 0x38
> +#define CIF_WB_LOW_FILTER 0x3c
> +#define CIF_WBC_CNT 0x40
> +#define CIF_CROP 0x44
> +#define CIF_SCL_CTRL 0x48
> +#define CIF_SCL_DST 0x4c
> +#define CIF_SCL_FCT 0x50
> +#define CIF_SCL_VALID_NUM 0x54
> +#define CIF_LINE_LOOP_CTR 0x58
> +#define CIF_FRAME_STATUS 0x60
> +#define CIF_CUR_DST 0x64
> +#define CIF_LAST_LINE 0x68
> +#define CIF_LAST_PIX 0x6c
> +
> +/* RK1808 CIF CSI Registers Offset */
> +#define CIF_CSI_ID0_CTRL0 0x80
> +#define CIF_CSI_ID0_CTRL1 0x84
> +#define CIF_CSI_ID1_CTRL0 0x88
> +#define CIF_CSI_ID1_CTRL1 0x8c
> +#define CIF_CSI_ID2_CTRL0 0x90
> +#define CIF_CSI_ID2_CTRL1 0x94
> +#define CIF_CSI_ID3_CTRL0 0x98
> +#define CIF_CSI_ID3_CTRL1 0x9c
> +#define CIF_CSI_WATER_LINE 0xa0
> +#define CIF_CSI_FRM0_ADDR_Y_ID0 0xa4
> +#define CIF_CSI_FRM1_ADDR_Y_ID0 0xa8
> +#define CIF_CSI_FRM0_ADDR_UV_ID0 0xac
> +#define CIF_CSI_FRM1_ADDR_UV_ID0 0xb0
> +#define CIF_CSI_FRM0_VLW_Y_ID0 0xb4
> +#define CIF_CSI_FRM1_VLW_Y_ID0 0xb8
> +#define CIF_CSI_FRM0_VLW_UV_ID0 0xbc
> +#define CIF_CSI_FRM1_VLW_UV_ID0 0xc0
> +#define CIF_CSI_FRM0_ADDR_Y_ID1 0xc4
> +#define CIF_CSI_FRM1_ADDR_Y_ID1 0xc8
> +#define CIF_CSI_FRM0_ADDR_UV_ID1 0xcc
> +#define CIF_CSI_FRM1_ADDR_UV_ID1 0xd0
> +#define CIF_CSI_FRM0_VLW_Y_ID1 0xd4
> +#define CIF_CSI_FRM1_VLW_Y_ID1 0xd8
> +#define CIF_CSI_FRM0_VLW_UV_ID1 0xdc
> +#define CIF_CSI_FRM1_VLW_UV_ID1 0xe0
> +#define CIF_CSI_FRM0_ADDR_Y_ID2 0xe4
> +#define CIF_CSI_FRM1_ADDR_Y_ID2 0xe8
> +#define CIF_CSI_FRM0_ADDR_UV_ID2 0xec
> +#define CIF_CSI_FRM1_ADDR_UV_ID2 0xf0
> +#define CIF_CSI_FRM0_VLW_Y_ID2 0xf4
> +#define CIF_CSI_FRM1_VLW_Y_ID2 0xf8
> +#define CIF_CSI_FRM0_VLW_UV_ID2 0xfc
> +#define CIF_CSI_FRM1_VLW_UV_ID2 0x100
> +#define CIF_CSI_FRM0_ADDR_Y_ID3 0x104
> +#define CIF_CSI_FRM1_ADDR_Y_ID3 0x108
> +#define CIF_CSI_FRM0_ADDR_UV_ID3 0x10c
> +#define CIF_CSI_FRM1_ADDR_UV_ID3 0x110
> +#define CIF_CSI_FRM0_VLW_Y_ID3 0x114
> +#define CIF_CSI_FRM1_VLW_Y_ID3 0x118
> +#define CIF_CSI_FRM0_VLW_UV_ID3 0x11c
> +#define CIF_CSI_FRM1_VLW_UV_ID3 0x120
> +#define CIF_CSI_INTEN 0x124
> +#define CIF_CSI_INTSTAT 0x128
> +#define CIF_CSI_LINE_INT_NUM_ID0_1 0x12c
> +#define CIF_CSI_LINE_INT_NUM_ID2_3 0x130
> +#define CIF_CSI_LINE_CNT_ID0_1 0x134
> +#define CIF_CSI_LINE_CNT_ID2_3 0x138
> +#define CIF_CSI_ID0_CROP_START 0x13c
> +#define CIF_CSI_ID1_CROP_START 0x140
> +#define CIF_CSI_ID2_CROP_START 0x144
> +#define CIF_CSI_ID3_CROP_START 0x148
> +
> +/* The key register bit description */
> +
> +/* CIF_CTRL Reg */
> +#define DISABLE_CAPTURE (0x0 << 0)
> +#define ENABLE_CAPTURE (0x1 << 0)
> +#define MODE_ONEFRAME (0x0 << 1)
> +#define MODE_PINGPONG (0x1 << 1)
> +#define MODE_LINELOOP (0x2 << 1)
> +#define AXI_BURST_16 (0xF << 12)
> +
> +/* CIF_INTEN */
> +#define INTEN_DISABLE (0x0 << 0)
> +#define FRAME_END_EN (0x1 << 0)
> +#define LINE_ERR_EN (0x1 << 2)
> +#define BUS_ERR_EN (0x1 << 6)
> +#define SCL_ERR_EN (0x1 << 7)
> +#define PST_INF_FRAME_END_EN (0x1 << 9)
> +
> +/* CIF INTSTAT */
> +#define INTSTAT_CLS (0x3FF)
> +#define FRAME_END (0x01 << 0)
> +#define LINE_ERR (0x01 << 2)
> +#define PST_INF_FRAME_END (0x01 << 9)
> +#define FRAME_END_CLR (0x01 << 0)
> +#define LINE_ERR_CLR (0x01 << 2)
> +#define PST_INF_FRAME_END_CLR (0x01 << 9)
> +#define INTSTAT_ERR (0xFC)
> +
> +/* FRAME STATUS */
> +#define FRAME_STAT_CLS 0x00
> +#define FRM0_STAT_CLS 0x20 /* write 0 to clear frame 0 */
> +
> +/* CIF FORMAT */
> +#define VSY_HIGH_ACTIVE (0x01 << 0)
> +#define VSY_LOW_ACTIVE (0x00 << 0)
> +#define HSY_LOW_ACTIVE (0x01 << 1)
> +#define HSY_HIGH_ACTIVE (0x00 << 1)
> +#define INPUT_MODE_YUV (0x00 << 2)
> +#define INPUT_MODE_PAL (0x02 << 2)
> +#define INPUT_MODE_NTSC (0x03 << 2)
> +#define INPUT_MODE_BT1120 (0x07 << 2)
> +#define INPUT_MODE_RAW (0x04 << 2)
> +#define INPUT_MODE_JPEG (0x05 << 2)
> +#define INPUT_MODE_MIPI (0x06 << 2)
> +#define YUV_INPUT_ORDER_UYVY (0x00 << 5)
> +#define YUV_INPUT_ORDER_YVYU (0x01 << 5)
> +#define YUV_INPUT_ORDER_VYUY (0x10 << 5)
> +#define YUV_INPUT_ORDER_YUYV (0x03 << 5)
> +#define YUV_INPUT_422 (0x00 << 7)
> +#define YUV_INPUT_420 (0x01 << 7)
> +#define INPUT_420_ORDER_EVEN (0x00 << 8)
> +#define INPUT_420_ORDER_ODD (0x01 << 8)
> +#define CCIR_INPUT_ORDER_ODD (0x00 << 9)
> +#define CCIR_INPUT_ORDER_EVEN (0x01 << 9)
> +#define RAW_DATA_WIDTH_8 (0x00 << 11)
> +#define RAW_DATA_WIDTH_10 (0x01 << 11)
> +#define RAW_DATA_WIDTH_12 (0x02 << 11)
> +#define YUV_OUTPUT_422 (0x00 << 16)
> +#define YUV_OUTPUT_420 (0x01 << 16)
> +#define OUTPUT_420_ORDER_EVEN (0x00 << 17)
> +#define OUTPUT_420_ORDER_ODD (0x01 << 17)
> +#define RAWD_DATA_LITTLE_ENDIAN (0x00 << 18)
> +#define RAWD_DATA_BIG_ENDIAN (0x01 << 18)
> +#define UV_STORAGE_ORDER_UVUV (0x00 << 19)
> +#define UV_STORAGE_ORDER_VUVU (0x01 << 19)
> +#define BT1120_CLOCK_SINGLE_EDGES (0x00 << 24)
> +#define BT1120_CLOCK_DOUBLE_EDGES (0x01 << 24)
> +#define BT1120_TRANSMIT_INTERFACE (0x00 << 25)
> +#define BT1120_TRANSMIT_PROGRESS (0x01 << 25)
> +#define BT1120_YC_SWAP (0x01 << 26)
> +
> +/* CIF_SCL_CTRL */
> +#define ENABLE_SCL_DOWN (0x01 << 0)
> +#define DISABLE_SCL_DOWN (0x00 << 0)
> +#define ENABLE_SCL_UP (0x01 << 1)
> +#define DISABLE_SCL_UP (0x00 << 1)
> +#define ENABLE_YUV_16BIT_BYPASS (0x01 << 4)
> +#define DISABLE_YUV_16BIT_BYPASS (0x00 << 4)
> +#define ENABLE_RAW_16BIT_BYPASS (0x01 << 5)
> +#define DISABLE_RAW_16BIT_BYPASS (0x00 << 5)
> +#define ENABLE_32BIT_BYPASS (0x01 << 6)
> +#define DISABLE_32BIT_BYPASS (0x00 << 6)
> +
> +/* CIF_INTSTAT */
> +#define CIF_F0_READY (0x01 << 0)
> +#define CIF_F1_READY (0x01 << 1)
> +
> +/* CIF CROP */
> +#define CIF_CROP_Y_SHIFT 16
> +#define CIF_CROP_X_SHIFT 0
> +
> +/* CIF_CSI_ID_CTRL0 */
> +#define CSI_DISABLE_CAPTURE (0x0 << 0)
> +#define CSI_ENABLE_CAPTURE (0x1 << 0)
> +#define CSI_WRDDR_TYPE_RAW8 (0x0 << 1)
> +#define CSI_WRDDR_TYPE_RAW10 (0x1 << 1)
> +#define CSI_WRDDR_TYPE_RAW12 (0x2 << 1)
> +#define CSI_WRDDR_TYPE_RGB888 (0x3 << 1)
> +#define CSI_WRDDR_TYPE_YUV422 (0x4 << 1)
> +#define CSI_DISABLE_COMMAND_MODE (0x0 << 4)
> +#define CSI_ENABLE_COMMAND_MODE (0x1 << 4)
> +#define CSI_DISABLE_CROP (0x0 << 5)
> +#define CSI_ENABLE_CROP (0x1 << 5)
> +
> +/* CIF_CSI_INTEN */
> +#define CSI_FRAME0_START_INTEN(id) (0x1 << ((id) * 2))
> +#define CSI_FRAME1_START_INTEN(id) (0x1 << ((id) * 2 + 1))
> +#define CSI_FRAME0_END_INTEN(id) (0x1 << ((id) * 2 + 8))
> +#define CSI_FRAME1_END_INTEN(id) (0x1 << ((id) * 2 + 9))
> +#define CSI_DMA_Y_FIFO_OVERFLOW_INTEN (0x1 << 16)
> +#define CSI_DMA_UV_FIFO_OVERFLOW_INTEN (0x1 << 17)
> +#define CSI_CONFIG_FIFO_OVERFLOW_INTEN (0x1 << 18)
> +#define CSI_BANDWIDTH_LACK_INTEN (0x1 << 19)
> +#define CSI_RX_FIFO_OVERFLOW_INTEN (0x1 << 20)
> +#define CSI_ALL_FRAME_START_INTEN (0xff << 0)
> +#define CSI_ALL_FRAME_END_INTEN (0xff << 8)
> +#define CSI_ALL_ERROR_INTEN (0x1f << 16)
> +
> +/* CIF_CSI_INTSTAT */
> +#define CSI_FRAME0_START_ID0 (0x1 << 0)
> +#define CSI_FRAME1_START_ID0 (0x1 << 1)
> +#define CSI_FRAME0_START_ID1 (0x1 << 2)
> +#define CSI_FRAME1_START_ID1 (0x1 << 3)
> +#define CSI_FRAME0_START_ID2 (0x1 << 4)
> +#define CSI_FRAME1_START_ID2 (0x1 << 5)
> +#define CSI_FRAME0_START_ID3 (0x1 << 6)
> +#define CSI_FRAME1_START_ID3 (0x1 << 7)
> +#define CSI_FRAME0_END_ID0 (0x1 << 8)
> +#define CSI_FRAME1_END_ID0 (0x1 << 9)
> +#define CSI_FRAME0_END_ID1 (0x1 << 10)
> +#define CSI_FRAME1_END_ID1 (0x1 << 11)
> +#define CSI_FRAME0_END_ID2 (0x1 << 12)
> +#define CSI_FRAME1_END_ID2 (0x1 << 13)
> +#define CSI_FRAME0_END_ID3 (0x1 << 14)
> +#define CSI_FRAME1_END_ID3 (0x1 << 15)
> +#define CSI_DMA_Y_FIFO_OVERFLOW (0x1 << 16)
> +#define CSI_DMA_UV_FIFO_OVERFLOW (0x1 << 17)
> +#define CSI_CONFIG_FIFO_OVERFLOW (0x1 << 18)
> +#define CSI_BANDWIDTH_LACK (0x1 << 19)
> +#define CSI_RX_FIFO_OVERFLOW (0x1 << 20)
> +
> +#define CSI_FIFO_OVERFLOW (CSI_DMA_Y_FIFO_OVERFLOW | \
> + CSI_DMA_UV_FIFO_OVERFLOW | \
> + CSI_CONFIG_FIFO_OVERFLOW | \
> + CSI_RX_FIFO_OVERFLOW)
> +
> +/* CSI Host Registers Define */
> +#define CSIHOST_N_LANES 0x04
> +#define CSIHOST_PHY_RSTZ 0x0c
> +#define CSIHOST_RESETN 0x10
> +#define CSIHOST_ERR1 0x20
> +#define CSIHOST_ERR2 0x24
> +#define CSIHOST_MSK1 0x28
> +#define CSIHOST_MSK2 0x2c
> +#define CSIHOST_CONTROL 0x40
> +
> +#define SW_CPHY_EN(x) ((x) << 0)
> +#define SW_DSI_EN(x) ((x) << 4)
> +#define SW_DATATYPE_FS(x) ((x) << 8)
> +#define SW_DATATYPE_FE(x) ((x) << 14)
> +#define SW_DATATYPE_LS(x) ((x) << 20)
> +#define SW_DATATYPE_LE(x) ((x) << 26)
> +
> +#endif
>
^ permalink raw reply [flat|nested] 13+ messages in thread