* [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
@ 2021-01-11 19:28 Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 1/9] media: v4l: Add packed YUV444 24bpp pixel format Mirela Rabulea
` (8 more replies)
0 siblings, 9 replies; 20+ messages in thread
From: Mirela Rabulea @ 2021-01-11 19:28 UTC (permalink / raw)
To: mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
This patch set adds the V4L2 driver for i.MX8QXP/QM JPEG encoder/decoder
and it's dependencies.
The driver was tested on i.MX8QXP, using a unit test application and
the v4l2-compliance tool, including the streaming tests for decoder & encoder.
The output of latest v4l2-compliance on i.MX8QXP, decoder & encoder:
root@imx8qxpmek:/unit_tests/JPEG# ./v4l2-compliance -d /dev/video0 -s
v4l2-compliance 1.21.0-4690, 64 bits, 64-bit time_t
v4l2-compliance SHA: f4316861d164 2021-01-06 09:15:54
Compliance test for mxc-jpeg decode device /dev/video0:
Driver Info:
Driver name : mxc-jpeg decode
Card type : mxc-jpeg decoder
Bus info : platform:58400000.jpegdec
Driver version : 5.11.0
Capabilities : 0x84204000
Video Memory-to-Memory Multiplanar
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x04204000
Video Memory-to-Memory Multiplanar
Streaming
Extended Pix Format
Detected JPEG Decoder
Required ioctls:
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
test invalid ioctls: 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 (Not Supported)
test VIDIOC_G/S_AUDIO: OK (Not Supported)
Inputs: 0 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:
test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK (Not Supported)
test VIDIOC_QUERYCTRL: OK (Not Supported)
test VIDIOC_G/S_CTRL: OK (Not Supported)
test VIDIOC_G/S/TRY_EXT_CTRLS: OK (Not Supported)
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:
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)
test Scaling: OK
Codec ioctls:
test VIDIOC_(TRY_)ENCODER_CMD: OK
test VIDIOC_G_ENC_INDEX: OK (Not Supported)
test VIDIOC_(TRY_)DECODER_CMD: OK
Buffer ioctls:
test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
test VIDIOC_EXPBUF: OK
test Requests: OK (Not Supported)
Test input 0:
Streaming ioctls:
test read/write: OK (Not Supported)
test blocking wait: OK
Video Capture Multiplanar: Captured 58 buffers
test MMAP (no poll): OK
Video Capture Multiplanar: Captured 58 buffers
test MMAP (select): OK
Video Capture Multiplanar: Captured 58 buffers
test MMAP (epoll): OK
test USERPTR (no poll): OK (Not Supported)
test USERPTR (select): OK (Not Supported)
test DMABUF: Cannot test, specify --expbuf-device
Total for mxc-jpeg decode device /dev/video0: 52, Succeeded: 52, Failed: 0, Warnings: 0
root@imx8qxpmek:/unit_tests/JPEG# ./v4l2-compliance -d /dev/video1 -s
v4l2-compliance 1.21.0-4690, 64 bits, 64-bit time_t
v4l2-compliance SHA: f4316861d164 2021-01-06 09:15:54
Compliance test for mxc-jpeg decode device /dev/video1:
Driver Info:
Driver name : mxc-jpeg decode
Card type : mxc-jpeg decoder
Bus info : platform:58450000.jpegenc
Driver version : 5.11.0
Capabilities : 0x84204000
Video Memory-to-Memory Multiplanar
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x04204000
Video Memory-to-Memory Multiplanar
Streaming
Extended Pix Format
Detected JPEG Encoder
Required ioctls:
test VIDIOC_QUERYCAP: OK
Allow for multiple opens:
test second /dev/video1 open: OK
test VIDIOC_QUERYCAP: OK
test VIDIOC_G/S_PRIORITY: OK
test for unlimited opens: OK
test invalid ioctls: 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 (Not Supported)
test VIDIOC_G/S_AUDIO: OK (Not Supported)
Inputs: 0 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:
test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK (Not Supported)
test VIDIOC_QUERYCTRL: OK (Not Supported)
test VIDIOC_G/S_CTRL: OK (Not Supported)
test VIDIOC_G/S/TRY_EXT_CTRLS: OK (Not Supported)
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:
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)
test Scaling: OK (Not Supported)
Codec ioctls:
test VIDIOC_(TRY_)ENCODER_CMD: OK
test VIDIOC_G_ENC_INDEX: OK (Not Supported)
test VIDIOC_(TRY_)DECODER_CMD: OK
Buffer ioctls:
test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
test VIDIOC_EXPBUF: OK
test Requests: OK (Not Supported)
Test input 0:
Streaming ioctls:
test read/write: OK (Not Supported)
test blocking wait: OK
Video Capture Multiplanar: Captured 58 buffers
test MMAP (no poll): OK
Video Capture Multiplanar: Captured 58 buffers
test MMAP (select): OK
Video Capture Multiplanar: Captured 58 buffers
test MMAP (epoll): OK
test USERPTR (no poll): OK (Not Supported)
test USERPTR (select): OK (Not Supported)
test DMABUF: Cannot test, specify --expbuf-device
Total for mxc-jpeg decode device /dev/video1: 52, Succeeded: 52, Failed: 0, Warnings: 0
Mirela Rabulea (9):
media: v4l: Add packed YUV444 24bpp pixel format
media: dt-bindings: Add bindings for i.MX8QXP/QM JPEG driver
media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
arm64: dts: imx8qxp: Add jpeg encoder/decoder nodes
Add maintainer for IMX jpeg v4l2 driver
media: Add parsing for APP14 data segment in jpeg helpers
media: Quit parsing stream if doesn't start with SOI
media: Avoid parsing quantization and huffman tables
media: imx-jpeg: Use v4l2 jpeg helpers in mxc-jpeg
.../bindings/media/nxp,imx8-jpeg.yaml | 84 +
.../media/v4l/pixfmt-packed-yuv.rst | 10 +
MAINTAINERS | 8 +
arch/arm64/boot/dts/freescale/imx8qxp.dtsi | 35 +
drivers/media/platform/Kconfig | 2 +
drivers/media/platform/Makefile | 1 +
drivers/media/platform/imx-jpeg/Kconfig | 11 +
drivers/media/platform/imx-jpeg/Makefile | 3 +
drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c | 168 ++
drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h | 140 ++
drivers/media/platform/imx-jpeg/mxc-jpeg.c | 2158 +++++++++++++++++
drivers/media/platform/imx-jpeg/mxc-jpeg.h | 180 ++
drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
drivers/media/v4l2-core/v4l2-jpeg.c | 62 +-
include/media/v4l2-jpeg.h | 20 +
include/uapi/linux/videodev2.h | 1 +
16 files changed, 2877 insertions(+), 7 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml
create mode 100644 drivers/media/platform/imx-jpeg/Kconfig
create mode 100644 drivers/media/platform/imx-jpeg/Makefile
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.c
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.h
--
2.17.1
^ permalink raw reply [flat|nested] 20+ messages in thread
* [PATCH v7 1/9] media: v4l: Add packed YUV444 24bpp pixel format
2021-01-11 19:28 [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
@ 2021-01-11 19:28 ` Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 2/9] media: dt-bindings: Add bindings for i.MX8QXP/QM JPEG driver Mirela Rabulea
` (7 subsequent siblings)
8 siblings, 0 replies; 20+ messages in thread
From: Mirela Rabulea @ 2021-01-11 19:28 UTC (permalink / raw)
To: mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
From: Mirela Rabulea <mirela.rabulea@nxp.com>
The added format is V4L2_PIX_FMT_YUV24, this is a packed
YUV 4:4:4 format, with 8 bits for each component, 24 bits
per sample.
This format is used by the i.MX 8QuadMax and i.MX 8DualXPlus/8QuadXPlus
JPEG encoder/decoder.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
.../userspace-api/media/v4l/pixfmt-packed-yuv.rst | 10 ++++++++++
drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
include/uapi/linux/videodev2.h | 1 +
3 files changed, 12 insertions(+)
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst b/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst
index eb551b57557e..4515f713decf 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst
@@ -220,6 +220,16 @@ the second byte and Y'\ :sub:`7-0` in the third byte.
- Y'\ :sub:`7-0`
- X\ :sub:`7-0`
+ * .. _V4L2-PIX-FMT-YUV24:
+
+ - ``V4L2_PIX_FMT_YUV24``
+ - 'YUV3'
+
+ - Y'\ :sub:`7-0`
+ - Cb\ :sub:`7-0`
+ - Cr\ :sub:`7-0`
+ - -\
+
.. note::
- The alpha component is expected to contain a meaningful value that can be
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 3198abdd538c..611768409d0b 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1304,6 +1304,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
+ case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break;
case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;
case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 79dbde3bcf8d..9e4359be04eb 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -586,6 +586,7 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_YUV444 v4l2_fourcc('Y', '4', '4', '4') /* 16 xxxxyyyy uuuuvvvv */
#define V4L2_PIX_FMT_YUV555 v4l2_fourcc('Y', 'U', 'V', 'O') /* 16 YUV-5-5-5 */
#define V4L2_PIX_FMT_YUV565 v4l2_fourcc('Y', 'U', 'V', 'P') /* 16 YUV-5-6-5 */
+#define V4L2_PIX_FMT_YUV24 v4l2_fourcc('Y', 'U', 'V', '3') /* 24 YUV-8-8-8 */
#define V4L2_PIX_FMT_YUV32 v4l2_fourcc('Y', 'U', 'V', '4') /* 32 YUV-8-8-8-8 */
#define V4L2_PIX_FMT_AYUV32 v4l2_fourcc('A', 'Y', 'U', 'V') /* 32 AYUV-8-8-8-8 */
#define V4L2_PIX_FMT_XYUV32 v4l2_fourcc('X', 'Y', 'U', 'V') /* 32 XYUV-8-8-8-8 */
--
2.17.1
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v7 2/9] media: dt-bindings: Add bindings for i.MX8QXP/QM JPEG driver
2021-01-11 19:28 [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 1/9] media: v4l: Add packed YUV444 24bpp pixel format Mirela Rabulea
@ 2021-01-11 19:28 ` Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
` (6 subsequent siblings)
8 siblings, 0 replies; 20+ messages in thread
From: Mirela Rabulea @ 2021-01-11 19:28 UTC (permalink / raw)
To: mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
From: Mirela Rabulea <mirela.rabulea@nxp.com>
Add bindings documentation for i.MX8QXP/QM JPEG decoder & encoder driver.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../bindings/media/nxp,imx8-jpeg.yaml | 84 +++++++++++++++++++
1 file changed, 84 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml
diff --git a/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml b/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml
new file mode 100644
index 000000000000..5d13cbb5251b
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml
@@ -0,0 +1,84 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/nxp,imx8-jpeg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: i.MX8QXP/QM JPEG decoder/encoder Device Tree Bindings
+
+maintainers:
+ - Mirela Rabulea <mirela.rabulea@nxp.com>
+
+description: |-
+ The JPEG decoder/encoder present in iMX8QXP and iMX8QM SoCs is an
+ ISO/IEC 10918-1 JPEG standard compliant decoder/encoder, for Baseline
+ and Extended Sequential DCT modes.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ # JPEG decoder
+ - nxp,imx8qxp-jpgdec
+ # JPEG encoder
+ - nxp,imx8qxp-jpgenc
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ description: |
+ There are 4 slots available in the IP, which the driver may use
+ If a certain slot is used, it should have an associated interrupt
+ The interrupt with index i is assumed to be for slot i
+ minItems: 1 # At least one slot is needed by the driver
+ maxItems: 4 # The IP has 4 slots available for use
+
+ power-domains:
+ description:
+ List of phandle and PM domain specifier as documented in
+ Documentation/devicetree/bindings/power/power_domain.txt
+ minItems: 2 # Wrapper and 1 slot
+ maxItems: 5 # Wrapper and 4 slots
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - power-domains
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/firmware/imx/rsrc.h>
+
+ jpegdec: jpegdec@58400000 {
+ compatible = "nxp,imx8qxp-jpgdec";
+ reg = <0x58400000 0x00050000 >;
+ interrupts = <GIC_SPI 309 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 310 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 311 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 312 IRQ_TYPE_LEVEL_HIGH>;
+ power-domains = <&pd IMX_SC_R_MJPEG_DEC_MP>,
+ <&pd IMX_SC_R_MJPEG_DEC_S0>,
+ <&pd IMX_SC_R_MJPEG_DEC_S1>,
+ <&pd IMX_SC_R_MJPEG_DEC_S2>,
+ <&pd IMX_SC_R_MJPEG_DEC_S3>;
+ };
+
+ jpegenc: jpegenc@58450000 {
+ compatible = "nxp,imx8qxp-jpgenc";
+ reg = <0x58450000 0x00050000 >;
+ interrupts = <GIC_SPI 305 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 306 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 307 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 308 IRQ_TYPE_LEVEL_HIGH>;
+ power-domains = <&pd IMX_SC_R_MJPEG_ENC_MP>,
+ <&pd IMX_SC_R_MJPEG_ENC_S0>,
+ <&pd IMX_SC_R_MJPEG_ENC_S1>,
+ <&pd IMX_SC_R_MJPEG_ENC_S2>,
+ <&pd IMX_SC_R_MJPEG_ENC_S3>;
+ };
+...
--
2.17.1
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
2021-01-11 19:28 [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 1/9] media: v4l: Add packed YUV444 24bpp pixel format Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 2/9] media: dt-bindings: Add bindings for i.MX8QXP/QM JPEG driver Mirela Rabulea
@ 2021-01-11 19:28 ` Mirela Rabulea
2021-01-12 0:36 ` kernel test robot
` (3 more replies)
2021-01-11 19:28 ` [PATCH v7 4/9] arm64: dts: imx8qxp: Add jpeg encoder/decoder nodes Mirela Rabulea
` (5 subsequent siblings)
8 siblings, 4 replies; 20+ messages in thread
From: Mirela Rabulea @ 2021-01-11 19:28 UTC (permalink / raw)
To: mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
From: Mirela Rabulea <mirela.rabulea@nxp.com>
V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM application
processors.
The multi-planar buffers API is used.
Baseline and extended sequential jpeg decoding is supported.
Progressive jpeg decoding is not supported by the IP.
Supports encode and decode of various formats:
YUV444, YUV422, YUV420, RGB, ARGB, Gray
YUV420 is the only multi-planar format supported.
Minimum resolution is 64 x 64, maximum 8192 x 8192.
The alignment requirements for the resolution depend on the format,
multiple of 16 resolutions should work for all formats.
v4l2-compliance tests are passing, including the
streaming tests, "v4l2-compliance -s"
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
---
Changes in v7:
Add print_mxc_buf() to replace print_buf_preview() and print_nbuf_to_eoi(),
and inside, use the print_hex_dump() from printk.h, also, print all the planes.
drivers/media/platform/Kconfig | 2 +
drivers/media/platform/Makefile | 1 +
drivers/media/platform/imx-jpeg/Kconfig | 10 +
drivers/media/platform/imx-jpeg/Makefile | 3 +
drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c | 168 ++
drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h | 140 +
drivers/media/platform/imx-jpeg/mxc-jpeg.c | 2289 +++++++++++++++++
drivers/media/platform/imx-jpeg/mxc-jpeg.h | 184 ++
8 files changed, 2797 insertions(+)
create mode 100644 drivers/media/platform/imx-jpeg/Kconfig
create mode 100644 drivers/media/platform/imx-jpeg/Makefile
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.c
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.h
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index e419b18613c6..6244e573aea5 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -239,6 +239,8 @@ config VIDEO_IMX_PXP
The i.MX Pixel Pipeline is a memory-to-memory engine for scaling,
color space conversion, and rotation.
+source "drivers/media/platform/imx-jpeg/Kconfig"
+
config VIDEO_MEDIATEK_JPEG
tristate "Mediatek JPEG Codec driver"
depends on MTK_IOMMU_V1 || MTK_IOMMU || COMPILE_TEST
diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index 9d4d6370908d..eedc14aafb32 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_VIDEO_MX2_EMMAPRP) += mx2_emmaprp.o
obj-$(CONFIG_VIDEO_CODA) += coda/
obj-$(CONFIG_VIDEO_IMX_PXP) += imx-pxp.o
+obj-$(CONFIG_VIDEO_IMX8_JPEG) += imx-jpeg/
obj-$(CONFIG_VIDEO_MEM2MEM_DEINTERLACE) += m2m-deinterlace.o
diff --git a/drivers/media/platform/imx-jpeg/Kconfig b/drivers/media/platform/imx-jpeg/Kconfig
new file mode 100644
index 000000000000..7cc89e5eff90
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/Kconfig
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+config VIDEO_IMX8_JPEG
+ tristate "IMX8 JPEG Encoder/Decoder"
+ depends on VIDEO_DEV && VIDEO_V4L2
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_MEM2MEM_DEV
+ default m
+ help
+ This is a video4linux2 driver for the i.MX8 QXP/QM integrated
+ JPEG encoder/decoder.
diff --git a/drivers/media/platform/imx-jpeg/Makefile b/drivers/media/platform/imx-jpeg/Makefile
new file mode 100644
index 000000000000..bf19c82e61b4
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+mxc-jpeg-encdec-objs := mxc-jpeg-hw.o mxc-jpeg.o
+obj-$(CONFIG_VIDEO_IMX8_JPEG) += mxc-jpeg-encdec.o
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
new file mode 100644
index 000000000000..29c604b1b179
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
@@ -0,0 +1,168 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
+ *
+ * Copyright 2018-2019 NXP
+ */
+
+#include <linux/delay.h>
+#include <media/videobuf2-core.h>
+#include "mxc-jpeg-hw.h"
+
+#define print_wrapper_reg(dev, base_address, reg_offset)\
+ internal_print_wrapper_reg(dev, (base_address), #reg_offset,\
+ (reg_offset))
+#define internal_print_wrapper_reg(dev, base_address, reg_name, reg_offset) {\
+ int val;\
+ val = readl((base_address) + (reg_offset));\
+ dev_dbg(dev, "Wrapper reg %s = 0x%x\n", reg_name, val);\
+}
+
+void print_descriptor_info(struct device *dev, struct mxc_jpeg_desc *desc)
+{
+ dev_dbg(dev, " MXC JPEG NEXT_DESCPT_PTR 0x%x\n",
+ desc->next_descpt_ptr);
+ dev_dbg(dev, " MXC JPEG BUF_BASE0 0x%x\n", desc->buf_base0);
+ dev_dbg(dev, " MXC JPEG BUF_BASE1 0x%x\n", desc->buf_base1);
+ dev_dbg(dev, " MXC JPEG LINE_PITCH %d\n", desc->line_pitch);
+ dev_dbg(dev, " MXC JPEG STM_BUFBASE 0x%x\n", desc->stm_bufbase);
+ dev_dbg(dev, " MXC JPEG STM_BUFSIZE %d\n", desc->stm_bufsize);
+ dev_dbg(dev, " MXC JPEG IMGSIZE %x (%d x %d)\n", desc->imgsize,
+ desc->imgsize >> 16, desc->imgsize & 0xFFFF);
+ dev_dbg(dev, " MXC JPEG STM_CTRL 0x%x\n", desc->stm_ctrl);
+}
+
+void print_cast_status(struct device *dev, void __iomem *reg,
+ unsigned int mode)
+{
+ dev_dbg(dev, "CAST IP status regs:\n");
+ print_wrapper_reg(dev, reg, CAST_STATUS0);
+ print_wrapper_reg(dev, reg, CAST_STATUS1);
+ print_wrapper_reg(dev, reg, CAST_STATUS2);
+ print_wrapper_reg(dev, reg, CAST_STATUS3);
+ print_wrapper_reg(dev, reg, CAST_STATUS4);
+ print_wrapper_reg(dev, reg, CAST_STATUS5);
+ print_wrapper_reg(dev, reg, CAST_STATUS6);
+ print_wrapper_reg(dev, reg, CAST_STATUS7);
+ print_wrapper_reg(dev, reg, CAST_STATUS8);
+ print_wrapper_reg(dev, reg, CAST_STATUS9);
+ print_wrapper_reg(dev, reg, CAST_STATUS10);
+ print_wrapper_reg(dev, reg, CAST_STATUS11);
+ print_wrapper_reg(dev, reg, CAST_STATUS12);
+ print_wrapper_reg(dev, reg, CAST_STATUS13);
+ if (mode == MXC_JPEG_DECODE)
+ return;
+ print_wrapper_reg(dev, reg, CAST_STATUS14);
+ print_wrapper_reg(dev, reg, CAST_STATUS15);
+ print_wrapper_reg(dev, reg, CAST_STATUS16);
+ print_wrapper_reg(dev, reg, CAST_STATUS17);
+ print_wrapper_reg(dev, reg, CAST_STATUS18);
+ print_wrapper_reg(dev, reg, CAST_STATUS19);
+}
+
+void print_wrapper_info(struct device *dev, void __iomem *reg)
+{
+ dev_dbg(dev, "Wrapper regs:\n");
+ print_wrapper_reg(dev, reg, GLB_CTRL);
+ print_wrapper_reg(dev, reg, COM_STATUS);
+ print_wrapper_reg(dev, reg, BUF_BASE0);
+ print_wrapper_reg(dev, reg, BUF_BASE1);
+ print_wrapper_reg(dev, reg, LINE_PITCH);
+ print_wrapper_reg(dev, reg, STM_BUFBASE);
+ print_wrapper_reg(dev, reg, STM_BUFSIZE);
+ print_wrapper_reg(dev, reg, IMGSIZE);
+ print_wrapper_reg(dev, reg, STM_CTRL);
+}
+
+void mxc_jpeg_enable_irq(void __iomem *reg, int slot)
+{
+ writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_IRQ_EN));
+}
+
+void mxc_jpeg_sw_reset(void __iomem *reg)
+{
+ /*
+ * engine soft reset, internal state machine reset
+ * this will not reset registers, however, it seems
+ * the registers may remain inconsistent with the internal state
+ * so, on purpose, at least let GLB_CTRL bits clear after this reset
+ */
+ writel(GLB_CTRL_SFT_RST, reg + GLB_CTRL);
+}
+
+void mxc_jpeg_enc_mode_conf(struct device *dev, void __iomem *reg)
+{
+ dev_dbg(dev, "CAST Encoder CONFIG...\n");
+ /*
+ * "Config_Mode" enabled, "Config_Mode auto clear enabled",
+ */
+ writel(0xa0, reg + CAST_MODE);
+
+ /* all markers and segments */
+ writel(0x3ff, reg + CAST_CFG_MODE);
+
+ /* quality factor */
+ writel(0x4b, reg + CAST_QUALITY);
+}
+
+void mxc_jpeg_enc_mode_go(struct device *dev, void __iomem *reg)
+{
+ dev_dbg(dev, "CAST Encoder GO...\n");
+ /*
+ * "GO" enabled, "GO bit auto clear" enabled
+ */
+ writel(0x140, reg + CAST_MODE);
+}
+
+void mxc_jpeg_dec_mode_go(struct device *dev, void __iomem *reg)
+{
+ dev_dbg(dev, "CAST Decoder GO...\n");
+ writel(MXC_DEC_EXIT_IDLE_MODE, reg + CAST_CTRL);
+}
+
+int mxc_jpeg_enable(void __iomem *reg)
+{
+ u32 regval;
+
+ writel(GLB_CTRL_JPG_EN, reg + GLB_CTRL);
+ regval = readl(reg);
+ return regval;
+}
+
+void mxc_jpeg_enable_slot(void __iomem *reg, int slot)
+{
+ u32 regval;
+
+ regval = readl(reg + GLB_CTRL);
+ writel(GLB_CTRL_SLOT_EN(slot) | regval, reg + GLB_CTRL);
+}
+
+void mxc_jpeg_set_l_endian(void __iomem *reg, int le)
+{
+ u32 regval;
+
+ regval = readl(reg + GLB_CTRL);
+ regval &= ~GLB_CTRL_L_ENDIAN(1); /* clear */
+ writel(GLB_CTRL_L_ENDIAN(le) | regval, reg + GLB_CTRL); /* set */
+}
+
+void mxc_jpeg_set_bufsize(struct mxc_jpeg_desc *desc, u32 bufsize)
+{
+ desc->stm_bufsize = bufsize;
+}
+
+void mxc_jpeg_set_res(struct mxc_jpeg_desc *desc, u16 w, u16 h)
+{
+ desc->imgsize = w << 16 | h;
+}
+
+void mxc_jpeg_set_line_pitch(struct mxc_jpeg_desc *desc, u32 line_pitch)
+{
+ desc->line_pitch = line_pitch;
+}
+
+void mxc_jpeg_set_desc(u32 desc, void __iomem *reg, int slot)
+{
+ writel(desc | MXC_NXT_DESCPT_EN,
+ reg + MXC_SLOT_OFFSET(slot, SLOT_NXT_DESCPT_PTR));
+}
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
new file mode 100644
index 000000000000..ae70d3a0dc24
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
@@ -0,0 +1,140 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
+ *
+ * Copyright 2018-2019 NXP
+ */
+
+#ifndef _MXC_JPEG_HW_H
+#define _MXC_JPEG_HW_H
+
+/* JPEG Decoder/Encoder Wrapper Register Map */
+#define GLB_CTRL 0x0
+#define COM_STATUS 0x4
+#define BUF_BASE0 0x14
+#define BUF_BASE1 0x18
+#define LINE_PITCH 0x1C
+#define STM_BUFBASE 0x20
+#define STM_BUFSIZE 0x24
+#define IMGSIZE 0x28
+#define STM_CTRL 0x2C
+
+/* CAST JPEG-Decoder/Encoder Status Register Map (read-only)*/
+#define CAST_STATUS0 0x100
+#define CAST_STATUS1 0x104
+#define CAST_STATUS2 0x108
+#define CAST_STATUS3 0x10c
+#define CAST_STATUS4 0x110
+#define CAST_STATUS5 0x114
+#define CAST_STATUS6 0x118
+#define CAST_STATUS7 0x11c
+#define CAST_STATUS8 0x120
+#define CAST_STATUS9 0x124
+#define CAST_STATUS10 0x128
+#define CAST_STATUS11 0x12c
+#define CAST_STATUS12 0x130
+#define CAST_STATUS13 0x134
+/* the following are for encoder only */
+#define CAST_STATUS14 0x138
+#define CAST_STATUS15 0x13c
+#define CAST_STATUS16 0x140
+#define CAST_STATUS17 0x144
+#define CAST_STATUS18 0x148
+#define CAST_STATUS19 0x14c
+
+/* CAST JPEG-Decoder Control Register Map (write-only) */
+#define CAST_CTRL CAST_STATUS13
+
+/* CAST JPEG-Encoder Control Register Map (write-only) */
+#define CAST_MODE CAST_STATUS0
+#define CAST_CFG_MODE CAST_STATUS1
+#define CAST_QUALITY CAST_STATUS2
+#define CAST_RSVD CAST_STATUS3
+#define CAST_REC_REGS_SEL CAST_STATUS4
+#define CAST_LUMTH CAST_STATUS5
+#define CAST_CHRTH CAST_STATUS6
+#define CAST_NOMFRSIZE_LO CAST_STATUS7
+#define CAST_NOMFRSIZE_HI CAST_STATUS8
+#define CAST_OFBSIZE_LO CAST_STATUS9
+#define CAST_OFBSIZE_HI CAST_STATUS10
+
+#define MXC_MAX_SLOTS 1 /* TODO use all 4 slots*/
+/* JPEG-Decoder Wrapper Slot Registers 0..3 */
+#define SLOT_BASE 0x10000
+#define SLOT_STATUS 0x0
+#define SLOT_IRQ_EN 0x4
+#define SLOT_BUF_PTR 0x8
+#define SLOT_CUR_DESCPT_PTR 0xC
+#define SLOT_NXT_DESCPT_PTR 0x10
+#define MXC_SLOT_OFFSET(slot, offset) ((SLOT_BASE * ((slot) + 1)) + (offset))
+
+/* GLB_CTRL fields */
+#define GLB_CTRL_JPG_EN 0x1
+#define GLB_CTRL_SFT_RST (0x1 << 1)
+#define GLB_CTRL_DEC_GO (0x1 << 2)
+#define GLB_CTRL_L_ENDIAN(le) ((le) << 3)
+#define GLB_CTRL_SLOT_EN(slot) (0x1 << ((slot) + 4))
+
+/* COM_STAUS fields */
+#define COM_STATUS_DEC_ONGOING(r) (((r) & (1 << 31)) >> 31)
+#define COM_STATUS_CUR_SLOT(r) (((r) & (0x3 << 29)) >> 29)
+
+/* STM_CTRL fields */
+#define STM_CTRL_PIXEL_PRECISION (0x1 << 2)
+#define STM_CTRL_IMAGE_FORMAT(img_fmt) ((img_fmt) << 3)
+#define STM_CTRL_IMAGE_FORMAT_MASK (0xF << 3)
+#define STM_CTRL_BITBUF_PTR_CLR(clr) ((clr) << 7)
+#define STM_CTRL_AUTO_START(go) ((go) << 8)
+#define STM_CTRL_CONFIG_MOD(mod) ((mod) << 9)
+
+/* SLOT_STATUS fields for slots 0..3 */
+#define SLOT_STATUS_FRMDONE (0x1 << 3)
+#define SLOT_STATUS_ENC_CONFIG_ERR (0x1 << 8)
+
+/* SLOT_IRQ_EN fields TBD */
+
+#define MXC_NXT_DESCPT_EN 0x1
+#define MXC_DEC_EXIT_IDLE_MODE 0x4
+
+/* JPEG-Decoder Wrapper - STM_CTRL Register Fields */
+#define MXC_PIXEL_PRECISION(precision) ((precision) / 8 << 2)
+enum mxc_jpeg_image_format {
+ MXC_JPEG_INVALID = -1,
+ MXC_JPEG_YUV420 = 0x0, /* 2 Plannar, Y=1st plane UV=2nd plane */
+ MXC_JPEG_YUV422 = 0x1, /* 1 Plannar, YUYV sequence */
+ MXC_JPEG_RGB = 0x2, /* RGBRGB packed format */
+ MXC_JPEG_YUV444 = 0x3, /* 1 Plannar, YUVYUV sequence */
+ MXC_JPEG_GRAY = 0x4, /* Y8 or Y12 or Single Component */
+ MXC_JPEG_RESERVED = 0x5,
+ MXC_JPEG_ARGB = 0x6,
+};
+
+#include "mxc-jpeg.h"
+void print_descriptor_info(struct device *dev, struct mxc_jpeg_desc *desc);
+void print_cast_status(struct device *dev, void __iomem *reg,
+ unsigned int mode);
+void print_wrapper_info(struct device *dev, void __iomem *reg);
+void mxc_jpeg_sw_reset(void __iomem *reg);
+int mxc_jpeg_enable(void __iomem *reg);
+void wait_frmdone(struct device *dev, void __iomem *reg);
+void mxc_jpeg_enc_mode_conf(struct device *dev, void __iomem *reg);
+void mxc_jpeg_enc_mode_go(struct device *dev, void __iomem *reg);
+void mxc_jpeg_dec_mode_go(struct device *dev, void __iomem *reg);
+int mxc_jpeg_get_slot(void __iomem *reg);
+u32 mxc_jpeg_get_offset(void __iomem *reg, int slot);
+void mxc_jpeg_enable_slot(void __iomem *reg, int slot);
+void mxc_jpeg_set_l_endian(void __iomem *reg, int le);
+void mxc_jpeg_enable_irq(void __iomem *reg, int slot);
+int mxc_jpeg_set_input(void __iomem *reg, u32 in_buf, u32 bufsize);
+int mxc_jpeg_set_output(void __iomem *reg, u16 out_pitch, u32 out_buf,
+ u16 w, u16 h);
+void mxc_jpeg_set_config_mode(void __iomem *reg, int config_mode);
+int mxc_jpeg_set_params(struct mxc_jpeg_desc *desc, u32 bufsize, u16
+ out_pitch, u32 format);
+void mxc_jpeg_set_bufsize(struct mxc_jpeg_desc *desc, u32 bufsize);
+void mxc_jpeg_set_res(struct mxc_jpeg_desc *desc, u16 w, u16 h);
+void mxc_jpeg_set_line_pitch(struct mxc_jpeg_desc *desc, u32 line_pitch);
+void mxc_jpeg_set_desc(u32 desc, void __iomem *reg, int slot);
+void mxc_jpeg_set_regs_from_desc(struct mxc_jpeg_desc *desc,
+ void __iomem *reg);
+#endif
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
new file mode 100644
index 000000000000..9f1052779c58
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
@@ -0,0 +1,2289 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM application
+ * processors.
+ *
+ * The multi-planar buffers API is used.
+ *
+ * Baseline and extended sequential jpeg decoding is supported.
+ * Progressive jpeg decoding is not supported by the IP.
+ * Supports encode and decode of various formats:
+ * YUV444, YUV422, YUV420, RGB, ARGB, Gray
+ * YUV420 is the only multi-planar format supported.
+ * Minimum resolution is 64 x 64, maximum 8192 x 8192.
+ * To achieve 8192 x 8192, modify in defconfig: CONFIG_CMA_SIZE_MBYTES=320
+ * The alignment requirements for the resolution depend on the format,
+ * multiple of 16 resolutions should work for all formats.
+ * Special workarounds are made in the driver to support NV12 1080p.
+ * When decoding, the driver detects image resolution and pixel format
+ * from the jpeg stream, by parsing the jpeg markers.
+ *
+ * The IP has 4 slots available for context switching, but only slot 0
+ * was fully tested to work. Context switching is not used by the driver.
+ * Each driver instance (context) allocates a slot for itself, but this
+ * is postponed until device_run, to allow unlimited opens.
+ *
+ * The driver submits jobs to the IP by setting up a descriptor for the
+ * used slot, and then validating it. The encoder has an additional descriptor
+ * for the configuration phase. The driver expects FRM_DONE interrupt from
+ * IP to mark the job as finished.
+ *
+ * The decoder IP has some limitations regarding the component ID's,
+ * but the driver works around this by replacing them in the jpeg stream.
+ *
+ * A module parameter is available for debug purpose (jpeg_tracing), to enable
+ * it, enable dynamic debug for this module and:
+ * echo 1 > /sys/module/mxc_jpeg_encdec/parameters/jpeg_tracing
+ *
+ * This is inspired by the drivers/media/platform/s5p-jpeg driver
+ *
+ * Copyright 2018-2019 NXP
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/irqreturn.h>
+#include <linux/interrupt.h>
+#include <linux/pm_domain.h>
+#include <linux/string.h>
+
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-event.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "mxc-jpeg-hw.h"
+#include "mxc-jpeg.h"
+
+static struct mxc_jpeg_fmt mxc_formats[] = {
+ {
+ .name = "JPEG",
+ .fourcc = V4L2_PIX_FMT_JPEG,
+ .colplanes = 1,
+ .flags = MXC_JPEG_FMT_TYPE_ENC,
+ },
+ {
+ .name = "RGB", /*RGBRGB packed format*/
+ .fourcc = V4L2_PIX_FMT_RGB24,
+ .depth = 24,
+ .colplanes = 1,
+ .h_align = 3,
+ .v_align = 3,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+ {
+ .name = "ARGB", /* ARGBARGB packed format */
+ .fourcc = V4L2_PIX_FMT_ARGB32,
+ .depth = 32,
+ .colplanes = 1,
+ .h_align = 3,
+ .v_align = 3,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+ {
+ .name = "YUV420", /* 1st plane = Y, 2nd plane = UV */
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .depth = 12, /* 6 bytes (4Y + UV) for 4 pixels */
+ .colplanes = 2, /* 1 plane Y, 1 plane UV interleaved */
+ .h_align = 4,
+ .v_align = 4,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+ {
+ .name = "YUV422", /* YUYV */
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .depth = 16,
+ .colplanes = 1,
+ .h_align = 4,
+ .v_align = 3,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+ {
+ .name = "YUV444", /* YUVYUV */
+ .fourcc = V4L2_PIX_FMT_YUV24,
+ .depth = 24,
+ .colplanes = 1,
+ .h_align = 3,
+ .v_align = 3,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+ {
+ .name = "Gray", /* Gray (Y8/Y12) or Single Comp */
+ .fourcc = V4L2_PIX_FMT_GREY,
+ .depth = 8,
+ .colplanes = 1,
+ .h_align = 3,
+ .v_align = 3,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+};
+
+#define MXC_JPEG_NUM_FORMATS ARRAY_SIZE(mxc_formats)
+
+static const struct of_device_id mxc_jpeg_match[] = {
+ {
+ .compatible = "nxp,imx8qxp-jpgdec",
+ .data = (void *)MXC_JPEG_DECODE,
+ },
+ {
+ .compatible = "nxp,imx8qxp-jpgenc",
+ .data = (void *)MXC_JPEG_ENCODE,
+ },
+ { },
+};
+
+/*
+ * default configuration stream, 64x64 yuv422
+ * split by JPEG marker, so it's easier to modify & use
+ */
+static const unsigned char jpeg_soi[] = {
+ 0xFF, 0xD8
+};
+
+static const unsigned char jpeg_app0[] = {
+ 0xFF, 0xE0,
+ 0x00, 0x10, 0x4A, 0x46, 0x49, 0x46, 0x00,
+ 0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x01,
+ 0x00, 0x00
+};
+
+static const unsigned char jpeg_app14[] = {
+ 0xFF, 0xEE,
+ 0x00, 0x0E, 0x41, 0x64, 0x6F, 0x62, 0x65,
+ 0x00, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const unsigned char jpeg_dqt[] = {
+ 0xFF, 0xDB,
+ 0x00, 0x84, 0x00, 0x10, 0x0B, 0x0C, 0x0E,
+ 0x0C, 0x0A, 0x10, 0x0E, 0x0D, 0x0E, 0x12,
+ 0x11, 0x10, 0x13, 0x18, 0x28, 0x1A, 0x18,
+ 0x16, 0x16, 0x18, 0x31, 0x23, 0x25, 0x1D,
+ 0x28, 0x3A, 0x33, 0x3D, 0x3C, 0x39, 0x33,
+ 0x38, 0x37, 0x40, 0x48, 0x5C, 0x4E, 0x40,
+ 0x44, 0x57, 0x45, 0x37, 0x38, 0x50, 0x6D,
+ 0x51, 0x57, 0x5F, 0x62, 0x67, 0x68, 0x67,
+ 0x3E, 0x4D, 0x71, 0x79, 0x70, 0x64, 0x78,
+ 0x5C, 0x65, 0x67, 0x63, 0x01, 0x11, 0x12,
+ 0x12, 0x18, 0x15, 0x18, 0x2F, 0x1A, 0x1A,
+ 0x2F, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
+};
+
+static const unsigned char jpeg_sof_maximal[] = {
+ 0xFF, 0xC0,
+ 0x00, 0x14, 0x08, 0x00, 0x40, 0x00, 0x40,
+ 0x04, 0x01, 0x11, 0x00, 0x02, 0x11, 0x01,
+ 0x03, 0x11, 0x01, 0x04, 0x11, 0x01
+};
+
+static const unsigned char jpeg_dht[] = {
+ 0xFF, 0xC4,
+ 0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
+ 0x09, 0x0A, 0x0B, 0x10, 0x00, 0x02, 0x01,
+ 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05,
+ 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01,
+ 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
+ 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61,
+ 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91,
+ 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15,
+ 0x52, 0xD1, 0xF0, 0x24, 0x33, 0x62, 0x72,
+ 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19,
+ 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A,
+ 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A,
+ 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
+ 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
+ 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67,
+ 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76,
+ 0x77, 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85,
+ 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93,
+ 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
+ 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
+ 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
+ 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4,
+ 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
+ 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
+ 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6,
+ 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3,
+ 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
+ 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03,
+ 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
+ 0x0B, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04,
+ 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04,
+ 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02,
+ 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06,
+ 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13,
+ 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
+ 0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52,
+ 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16,
+ 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18,
+ 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A,
+ 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43,
+ 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A,
+ 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
+ 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
+ 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77,
+ 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85,
+ 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93,
+ 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
+ 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
+ 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
+ 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4,
+ 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
+ 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
+ 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+ 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5,
+ 0xF6, 0xF7, 0xF8, 0xF9, 0xFA
+};
+
+static const unsigned char jpeg_dri[] = {
+ 0xFF, 0xDD,
+ 0x00, 0x04, 0x00, 0x20
+};
+
+static const unsigned char jpeg_sos_maximal[] = {
+ 0xFF, 0xDA,
+ 0x00, 0x0C, 0x04, 0x01, 0x00, 0x02, 0x11, 0x03,
+ 0x11, 0x04, 0x11, 0x00, 0x3F, 0x00
+};
+
+static const unsigned char jpeg_eoi[] = {
+ 0xFF, 0xD9
+};
+
+struct mxc_jpeg_src_buf {
+ /* common v4l buffer stuff -- must be first */
+ struct vb2_v4l2_buffer b;
+ struct list_head list;
+
+ /* mxc-jpeg specific */
+ bool dht_needed;
+ bool jpeg_parse_error;
+};
+
+static inline struct mxc_jpeg_src_buf *vb2_to_mxc_buf(struct vb2_buffer *vb)
+{
+ return container_of(to_vb2_v4l2_buffer(vb),
+ struct mxc_jpeg_src_buf, b);
+}
+
+static unsigned int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level (0-3)");
+
+static void _bswap16(u16 *a)
+{
+ *a = ((*a & 0x00FF) << 8) | ((*a & 0xFF00) >> 8);
+}
+
+static void print_mxc_buf(struct mxc_jpeg_dev *jpeg, struct vb2_buffer *buf,
+ unsigned long len)
+{
+ unsigned int plane_no;
+ u32 dma_addr;
+ void *vaddr;
+ unsigned long payload;
+
+ if (debug < 3)
+ return;
+
+ for (plane_no = 0; plane_no < buf->num_planes; plane_no++) {
+ payload = vb2_get_plane_payload(buf, plane_no);
+ if (len == 0)
+ len = payload;
+ dma_addr = vb2_dma_contig_plane_dma_addr(buf, plane_no);
+ vaddr = vb2_plane_vaddr(buf, plane_no);
+ v4l2_dbg(3, debug, &jpeg->v4l2_dev,
+ "plane %d (vaddr=%p dma_addr=%x payload=%ld):",
+ plane_no, vaddr, dma_addr, payload);
+ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
+ vaddr, len, false);
+ }
+}
+
+static inline struct mxc_jpeg_ctx *mxc_jpeg_fh_to_ctx(struct v4l2_fh *fh)
+{
+ return container_of(fh, struct mxc_jpeg_ctx, fh);
+}
+
+static int enum_fmt(struct mxc_jpeg_fmt *mxc_formats, int n,
+ struct v4l2_fmtdesc *f, u32 type)
+{
+ int i, num = 0;
+
+ for (i = 0; i < n; ++i) {
+ if (mxc_formats[i].flags == type) {
+ /* index-th format of searched type found ? */
+ if (num == f->index)
+ break;
+ /* Correct type but haven't reached our index yet,
+ * just increment per-type index
+ */
+ ++num;
+ }
+ }
+
+ /* Format not found */
+ if (i >= n)
+ return -EINVAL;
+
+ strscpy(f->description, mxc_formats[i].name, sizeof(f->description));
+ f->pixelformat = mxc_formats[i].fourcc;
+
+ return 0;
+}
+
+static struct mxc_jpeg_fmt *mxc_jpeg_find_format(struct mxc_jpeg_ctx *ctx,
+ u32 pixelformat)
+{
+ unsigned int k;
+
+ for (k = 0; k < MXC_JPEG_NUM_FORMATS; k++) {
+ struct mxc_jpeg_fmt *fmt = &mxc_formats[k];
+
+ if (fmt->fourcc == pixelformat)
+ return fmt;
+ }
+ return NULL;
+}
+
+static enum mxc_jpeg_image_format mxc_jpeg_fourcc_to_imgfmt(u32 fourcc)
+{
+ switch (fourcc) {
+ case V4L2_PIX_FMT_GREY:
+ return MXC_JPEG_GRAY;
+ case V4L2_PIX_FMT_YUYV:
+ return MXC_JPEG_YUV422;
+ case V4L2_PIX_FMT_NV12:
+ return MXC_JPEG_YUV420;
+ case V4L2_PIX_FMT_YUV24:
+ return MXC_JPEG_YUV444;
+ case V4L2_PIX_FMT_RGB24:
+ return MXC_JPEG_RGB;
+ case V4L2_PIX_FMT_ARGB32:
+ return MXC_JPEG_ARGB;
+ default:
+ return MXC_JPEG_INVALID;
+ }
+}
+
+static int mxc_jpeg_imgfmt_to_fourcc(enum mxc_jpeg_image_format imgfmt,
+ u32 *fourcc)
+{
+ switch (imgfmt) {
+ case MXC_JPEG_GRAY:
+ *fourcc = V4L2_PIX_FMT_GREY;
+ return 0;
+ case MXC_JPEG_YUV422:
+ *fourcc = V4L2_PIX_FMT_YUYV;
+ return 0;
+ case MXC_JPEG_YUV420:
+ *fourcc = V4L2_PIX_FMT_NV12;
+ return 0;
+ case MXC_JPEG_YUV444:
+ *fourcc = V4L2_PIX_FMT_YUV24;
+ return 0;
+ case MXC_JPEG_RGB:
+ *fourcc = V4L2_PIX_FMT_RGB24;
+ return 0;
+ case MXC_JPEG_ARGB:
+ *fourcc = V4L2_PIX_FMT_ARGB32;
+ return 0;
+ default:
+ return 1;
+ }
+}
+
+static struct mxc_jpeg_q_data *mxc_jpeg_get_q_data(struct mxc_jpeg_ctx *ctx,
+ enum v4l2_buf_type type)
+{
+ if (V4L2_TYPE_IS_OUTPUT(type))
+ return &ctx->out_q;
+ return &ctx->cap_q;
+}
+
+static void mxc_jpeg_addrs(struct mxc_jpeg_desc *desc,
+ struct vb2_buffer *raw_buf,
+ struct vb2_buffer *jpeg_buf, int offset)
+{
+ int img_fmt = desc->stm_ctrl & STM_CTRL_IMAGE_FORMAT_MASK;
+
+ desc->buf_base0 = vb2_dma_contig_plane_dma_addr(raw_buf, 0);
+ desc->buf_base1 = 0;
+ if (img_fmt == STM_CTRL_IMAGE_FORMAT(MXC_JPEG_YUV420)) {
+ WARN_ON(raw_buf->num_planes < 2);
+ desc->buf_base1 = vb2_dma_contig_plane_dma_addr(raw_buf, 1);
+ }
+ desc->stm_bufbase = vb2_dma_contig_plane_dma_addr(jpeg_buf, 0) +
+ offset;
+}
+
+static void notify_eos(struct mxc_jpeg_ctx *ctx)
+{
+ const struct v4l2_event ev = {
+ .type = V4L2_EVENT_EOS
+ };
+
+ dev_dbg(ctx->mxc_jpeg->dev, "Notify app event EOS reached");
+ v4l2_event_queue_fh(&ctx->fh, &ev);
+}
+
+static void notify_src_chg(struct mxc_jpeg_ctx *ctx)
+{
+ const struct v4l2_event ev = {
+ .type = V4L2_EVENT_SOURCE_CHANGE,
+ .u.src_change.changes =
+ V4L2_EVENT_SRC_CH_RESOLUTION,
+ };
+
+ dev_dbg(ctx->mxc_jpeg->dev, "Notify app event SRC_CH_RESOLUTION");
+ v4l2_event_queue_fh(&ctx->fh, &ev);
+}
+
+static int mxc_get_free_slot(struct mxc_jpeg_slot_data slot_data[], int n)
+{
+ int free_slot = 0;
+
+ while (slot_data[free_slot].used && free_slot < n)
+ free_slot++;
+
+ return free_slot; /* >=n when there are no more free slots */
+}
+
+static bool mxc_jpeg_alloc_slot_data(struct mxc_jpeg_dev *jpeg,
+ unsigned int slot)
+{
+ struct mxc_jpeg_desc *desc;
+ struct mxc_jpeg_desc *cfg_desc;
+ void *cfg_stm;
+
+ if (jpeg->slot_data[slot].desc)
+ goto skip_alloc; /* already allocated, reuse it */
+
+ /* allocate descriptor for decoding/encoding phase */
+ desc = dma_alloc_coherent(jpeg->dev,
+ sizeof(struct mxc_jpeg_desc),
+ &jpeg->slot_data[slot].desc_handle,
+ GFP_ATOMIC);
+ if (!desc)
+ goto err;
+ jpeg->slot_data[slot].desc = desc;
+
+ /* allocate descriptor for configuration phase (encoder only) */
+ cfg_desc = dma_alloc_coherent(jpeg->dev,
+ sizeof(struct mxc_jpeg_desc),
+ &jpeg->slot_data[slot].cfg_desc_handle,
+ GFP_ATOMIC);
+ if (!cfg_desc)
+ goto err;
+ jpeg->slot_data[slot].cfg_desc = cfg_desc;
+
+ /* allocate configuration stream */
+ cfg_stm = dma_alloc_coherent(jpeg->dev,
+ MXC_JPEG_MAX_CFG_STREAM,
+ &jpeg->slot_data[slot].cfg_stream_handle,
+ GFP_ATOMIC);
+ if (!cfg_stm)
+ goto err;
+ jpeg->slot_data[slot].cfg_stream_vaddr = cfg_stm;
+
+skip_alloc:
+ jpeg->slot_data[slot].used = true;
+
+ return true;
+err:
+ dev_err(jpeg->dev, "Could not allocate descriptors for slot %d", slot);
+
+ return false;
+}
+
+static void mxc_jpeg_free_slot_data(struct mxc_jpeg_dev *jpeg,
+ unsigned int slot)
+{
+ if (slot >= MXC_MAX_SLOTS) {
+ dev_err(jpeg->dev, "Invalid slot %d, nothing to free.", slot);
+ return;
+ }
+
+ /* free descriptor for decoding/encoding phase */
+ dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
+ jpeg->slot_data[slot].desc,
+ jpeg->slot_data[slot].desc_handle);
+
+ /* free descriptor for encoder configuration phase / decoder DHT */
+ dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
+ jpeg->slot_data[slot].cfg_desc,
+ jpeg->slot_data[slot].cfg_desc_handle);
+
+ /* free configuration stream */
+ dma_free_coherent(jpeg->dev, MXC_JPEG_MAX_CFG_STREAM,
+ jpeg->slot_data[slot].cfg_stream_vaddr,
+ jpeg->slot_data[slot].cfg_stream_handle);
+
+ jpeg->slot_data[slot].used = false;
+}
+
+static irqreturn_t mxc_jpeg_dec_irq(int irq, void *priv)
+{
+ struct mxc_jpeg_dev *jpeg = priv;
+ struct mxc_jpeg_ctx *ctx;
+ void __iomem *reg = jpeg->base_reg;
+ struct device *dev = jpeg->dev;
+ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ struct mxc_jpeg_src_buf *jpeg_src_buf;
+ enum vb2_buffer_state buf_state;
+ u32 dec_ret, com_status;
+ unsigned long payload;
+ struct mxc_jpeg_q_data *q_data;
+ enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ unsigned int slot;
+
+ spin_lock(&jpeg->hw_lock);
+
+ com_status = readl(reg + COM_STATUS);
+ slot = COM_STATUS_CUR_SLOT(com_status);
+ dev_dbg(dev, "Irq %d on slot %d.\n", irq, slot);
+
+ ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev);
+ if (!ctx) {
+ dev_err(dev,
+ "Instance released before the end of transaction.\n");
+ /* soft reset only resets internal state, not registers */
+ mxc_jpeg_sw_reset(reg);
+ /* clear all interrupts */
+ writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS));
+ goto job_unlock;
+ }
+
+ if (slot != ctx->slot) {
+ /* TODO investigate when adding multi-instance support */
+ dev_warn(dev, "IRQ slot %d != context slot %d.\n",
+ slot, ctx->slot);
+ goto job_unlock;
+ }
+
+ dec_ret = readl(reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS));
+ writel(dec_ret, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS)); /* w1c */
+
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ jpeg_src_buf = vb2_to_mxc_buf(&src_buf->vb2_buf);
+
+ if (dec_ret & SLOT_STATUS_ENC_CONFIG_ERR) {
+ u32 ret = readl(reg + CAST_STATUS12);
+
+ dev_err(dev, "Encoder/decoder error, status=0x%08x", ret);
+ mxc_jpeg_sw_reset(reg);
+ buf_state = VB2_BUF_STATE_ERROR;
+ goto buffers_done;
+ }
+
+ if (!(dec_ret & SLOT_STATUS_FRMDONE))
+ goto job_unlock;
+
+ if (jpeg->mode == MXC_JPEG_ENCODE &&
+ ctx->enc_state == MXC_JPEG_ENC_CONF) {
+ ctx->enc_state = MXC_JPEG_ENCODING;
+ dev_dbg(dev, "Encoder config finished. Start encoding...\n");
+ mxc_jpeg_enc_mode_go(dev, reg);
+ goto job_unlock;
+ }
+ if (jpeg->mode == MXC_JPEG_DECODE && jpeg_src_buf->dht_needed) {
+ jpeg_src_buf->dht_needed = false;
+ dev_dbg(dev, "Decoder DHT cfg finished. Start decoding...\n");
+ goto job_unlock;
+ }
+ if (jpeg->mode == MXC_JPEG_ENCODE) {
+ payload = readl(reg + MXC_SLOT_OFFSET(slot, SLOT_BUF_PTR));
+ vb2_set_plane_payload(&dst_buf->vb2_buf, 0, payload);
+ dev_dbg(dev, "Encoding finished, payload size: %ld\n",
+ payload);
+ } else {
+ q_data = mxc_jpeg_get_q_data(ctx, cap_type);
+ payload = q_data->sizeimage[0];
+ vb2_set_plane_payload(&dst_buf->vb2_buf, 0, payload);
+ vb2_set_plane_payload(&dst_buf->vb2_buf, 1, 0);
+ if (q_data->fmt->colplanes == 2) {
+ payload = q_data->sizeimage[1];
+ vb2_set_plane_payload(&dst_buf->vb2_buf, 1, payload);
+ }
+ dev_dbg(dev, "Decoding finished, payload size: %ld + %ld\n",
+ vb2_get_plane_payload(&dst_buf->vb2_buf, 0),
+ vb2_get_plane_payload(&dst_buf->vb2_buf, 1));
+ }
+
+ /* short preview of the results */
+ dev_dbg(dev, "src_buf preview: ");
+ print_mxc_buf(jpeg, &src_buf->vb2_buf, 32);
+ dev_dbg(dev, "dst_buf preview: ");
+ print_mxc_buf(jpeg, &dst_buf->vb2_buf, 32);
+ buf_state = VB2_BUF_STATE_DONE;
+
+buffers_done:
+ jpeg->slot_data[slot].used = false; /* unused, but don't free */
+ v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_buf_done(src_buf, buf_state);
+ v4l2_m2m_buf_done(dst_buf, buf_state);
+ spin_unlock(&jpeg->hw_lock);
+ v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+ return IRQ_HANDLED;
+job_unlock:
+ spin_unlock(&jpeg->hw_lock);
+ return IRQ_HANDLED;
+}
+
+static int mxc_jpeg_fixup_sof(struct mxc_jpeg_sof *sof,
+ u32 fourcc,
+ u16 w, u16 h)
+{
+ int sof_length;
+
+ sof->precision = 8; /* TODO allow 8/12 bit precision*/
+ sof->height = h;
+ _bswap16(&sof->height);
+ sof->width = w;
+ _bswap16(&sof->width);
+
+ switch (fourcc) {
+ case V4L2_PIX_FMT_NV12:
+ sof->components_no = 3;
+ sof->comp[0].v = 0x2;
+ sof->comp[0].h = 0x2;
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ sof->components_no = 3;
+ sof->comp[0].v = 0x1;
+ sof->comp[0].h = 0x2;
+ break;
+ case V4L2_PIX_FMT_YUV24:
+ case V4L2_PIX_FMT_RGB24:
+ default:
+ sof->components_no = 3;
+ break;
+ case V4L2_PIX_FMT_ARGB32:
+ sof->components_no = 4;
+ break;
+ case V4L2_PIX_FMT_GREY:
+ sof->components_no = 1;
+ break;
+ }
+ sof_length = 8 + 3 * sof->components_no;
+ sof->length = sof_length;
+ _bswap16(&sof->length);
+
+ return sof_length; /* not swaped */
+}
+
+static int mxc_jpeg_fixup_sos(struct mxc_jpeg_sos *sos,
+ u32 fourcc)
+{
+ int sos_length;
+ u8 *sof_u8 = (u8 *)sos;
+
+ switch (fourcc) {
+ case V4L2_PIX_FMT_NV12:
+ sos->components_no = 3;
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ sos->components_no = 3;
+ break;
+ case V4L2_PIX_FMT_YUV24:
+ case V4L2_PIX_FMT_RGB24:
+ default:
+ sos->components_no = 3;
+ break;
+ case V4L2_PIX_FMT_ARGB32:
+ sos->components_no = 4;
+ break;
+ case V4L2_PIX_FMT_GREY:
+ sos->components_no = 1;
+ break;
+ }
+ sos_length = 6 + 2 * sos->components_no;
+ sos->length = sos_length;
+ _bswap16(&sos->length);
+
+ /* SOS ignorable bytes, not so ignorable after all */
+ sof_u8[sos_length - 1] = 0x0;
+ sof_u8[sos_length - 2] = 0x3f;
+ sof_u8[sos_length - 3] = 0x0;
+
+ return sos_length; /* not swaped */
+}
+
+static unsigned int mxc_jpeg_setup_cfg_stream(void *cfg_stream_vaddr,
+ u32 fourcc,
+ u16 w, u16 h)
+{
+ unsigned int offset = 0;
+ u8 *cfg = (u8 *)cfg_stream_vaddr;
+ struct mxc_jpeg_sof *sof;
+ struct mxc_jpeg_sos *sos;
+
+ memcpy(cfg + offset, jpeg_soi, ARRAY_SIZE(jpeg_soi));
+ offset += ARRAY_SIZE(jpeg_soi);
+
+ if (fourcc == V4L2_PIX_FMT_RGB24 ||
+ fourcc == V4L2_PIX_FMT_ARGB32) {
+ memcpy(cfg + offset, jpeg_app14, sizeof(jpeg_app14));
+ offset += sizeof(jpeg_app14);
+ } else {
+ memcpy(cfg + offset, jpeg_app0, sizeof(jpeg_app0));
+ offset += sizeof(jpeg_app0);
+ }
+
+ memcpy(cfg + offset, jpeg_dqt, sizeof(jpeg_dqt));
+ offset += sizeof(jpeg_dqt);
+
+ memcpy(cfg + offset, jpeg_sof_maximal, sizeof(jpeg_sof_maximal));
+ offset += 2; /* skip marker ID */
+ sof = (struct mxc_jpeg_sof *)(cfg + offset);
+ offset += mxc_jpeg_fixup_sof(sof, fourcc, w, h);
+
+ memcpy(cfg + offset, jpeg_dht, sizeof(jpeg_dht));
+ offset += sizeof(jpeg_dht);
+
+ memcpy(cfg + offset, jpeg_dri, sizeof(jpeg_dri));
+ offset += sizeof(jpeg_dri);
+
+ memcpy(cfg + offset, jpeg_sos_maximal, sizeof(jpeg_sos_maximal));
+ offset += 2; /* skip marker ID */
+ sos = (struct mxc_jpeg_sos *)(cfg + offset);
+ offset += mxc_jpeg_fixup_sos(sos, fourcc);
+
+ memcpy(cfg + offset, jpeg_eoi, sizeof(jpeg_eoi));
+ offset += sizeof(jpeg_eoi);
+
+ return offset;
+}
+
+static void mxc_jpeg_config_dec_desc(struct vb2_buffer *out_buf,
+ struct mxc_jpeg_ctx *ctx,
+ struct vb2_buffer *src_buf,
+ struct vb2_buffer *dst_buf)
+{
+ enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ struct mxc_jpeg_q_data *q_data_cap;
+ enum mxc_jpeg_image_format img_fmt;
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ void __iomem *reg = jpeg->base_reg;
+ unsigned int slot = ctx->slot;
+ struct mxc_jpeg_desc *desc = jpeg->slot_data[slot].desc;
+ struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data[slot].cfg_desc;
+ dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
+ dma_addr_t cfg_desc_handle = jpeg->slot_data[slot].cfg_desc_handle;
+ dma_addr_t cfg_stream_handle = jpeg->slot_data[slot].cfg_stream_handle;
+ unsigned int *cfg_size = &jpeg->slot_data[slot].cfg_stream_size;
+ void *cfg_stream_vaddr = jpeg->slot_data[slot].cfg_stream_vaddr;
+ struct mxc_jpeg_src_buf *jpeg_src_buf;
+
+ jpeg_src_buf = vb2_to_mxc_buf(src_buf);
+
+ /* setup the decoding descriptor */
+ desc->next_descpt_ptr = 0; /* end of chain */
+ q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
+ desc->imgsize = q_data_cap->w_adjusted << 16 | q_data_cap->h_adjusted;
+ img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data_cap->fmt->fourcc);
+ desc->stm_ctrl &= ~STM_CTRL_IMAGE_FORMAT(0xF); /* clear image format */
+ desc->stm_ctrl |= STM_CTRL_IMAGE_FORMAT(img_fmt);
+ desc->line_pitch = q_data_cap->bytesperline[0];
+ mxc_jpeg_addrs(desc, dst_buf, src_buf, 0);
+ mxc_jpeg_set_bufsize(desc, ALIGN(vb2_plane_size(src_buf, 0), 1024));
+ print_descriptor_info(jpeg->dev, desc);
+
+ if (!jpeg_src_buf->dht_needed) {
+ /* validate the decoding descriptor */
+ mxc_jpeg_set_desc(desc_handle, reg, slot);
+ return;
+ }
+
+ /*
+ * if a default huffman table is needed, use the config descriptor to
+ * inject a DHT, by chaining it before the decoding descriptor
+ */
+ *cfg_size = mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
+ V4L2_PIX_FMT_YUYV,
+ MXC_JPEG_MIN_WIDTH,
+ MXC_JPEG_MIN_HEIGHT);
+ cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
+ cfg_desc->buf_base0 = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+ cfg_desc->buf_base1 = 0;
+ cfg_desc->imgsize = MXC_JPEG_MIN_WIDTH << 16;
+ cfg_desc->imgsize |= MXC_JPEG_MIN_HEIGHT;
+ cfg_desc->line_pitch = MXC_JPEG_MIN_WIDTH * 2;
+ cfg_desc->stm_ctrl = STM_CTRL_IMAGE_FORMAT(MXC_JPEG_YUV422);
+ cfg_desc->stm_bufbase = cfg_stream_handle;
+ cfg_desc->stm_bufsize = ALIGN(*cfg_size, 1024);
+ print_descriptor_info(jpeg->dev, cfg_desc);
+
+ /* validate the configuration descriptor */
+ mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
+}
+
+static void mxc_jpeg_config_enc_desc(struct vb2_buffer *out_buf,
+ struct mxc_jpeg_ctx *ctx,
+ struct vb2_buffer *src_buf,
+ struct vb2_buffer *dst_buf)
+{
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ void __iomem *reg = jpeg->base_reg;
+ unsigned int slot = ctx->slot;
+ struct mxc_jpeg_desc *desc = jpeg->slot_data[slot].desc;
+ struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data[slot].cfg_desc;
+ dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
+ dma_addr_t cfg_desc_handle = jpeg->slot_data[slot].cfg_desc_handle;
+ void *cfg_stream_vaddr = jpeg->slot_data[slot].cfg_stream_vaddr;
+ struct mxc_jpeg_q_data *q_data;
+ enum mxc_jpeg_image_format img_fmt;
+ int w, h;
+
+ q_data = mxc_jpeg_get_q_data(ctx, src_buf->vb2_queue->type);
+
+ jpeg->slot_data[slot].cfg_stream_size =
+ mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
+ q_data->fmt->fourcc,
+ q_data->w_adjusted,
+ q_data->h_adjusted);
+
+ /* chain the config descriptor with the encoding descriptor */
+ cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
+
+ cfg_desc->buf_base0 = jpeg->slot_data[slot].cfg_stream_handle;
+ cfg_desc->buf_base1 = 0;
+ cfg_desc->line_pitch = 0;
+ cfg_desc->stm_bufbase = 0; /* no output expected */
+ cfg_desc->stm_bufsize = 0x0;
+ cfg_desc->imgsize = 0;
+ cfg_desc->stm_ctrl = STM_CTRL_CONFIG_MOD(1);
+
+ desc->next_descpt_ptr = 0; /* end of chain */
+
+ /* use adjusted resolution for CAST IP job */
+ w = q_data->w_adjusted;
+ h = q_data->h_adjusted;
+ mxc_jpeg_set_res(desc, w, h);
+ mxc_jpeg_set_line_pitch(desc, w * (q_data->fmt->depth / 8));
+ mxc_jpeg_set_bufsize(desc, desc->line_pitch * h);
+ img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data->fmt->fourcc);
+ if (img_fmt == MXC_JPEG_INVALID)
+ dev_err(jpeg->dev, "No valid image format detected\n");
+ desc->stm_ctrl = STM_CTRL_CONFIG_MOD(0) |
+ STM_CTRL_IMAGE_FORMAT(img_fmt);
+ mxc_jpeg_addrs(desc, src_buf, dst_buf, 0);
+ dev_dbg(jpeg->dev, "cfg_desc - 0x%llx:\n", cfg_desc_handle);
+ print_descriptor_info(jpeg->dev, cfg_desc);
+ dev_dbg(jpeg->dev, "enc desc - 0x%llx:\n", desc_handle);
+ print_descriptor_info(jpeg->dev, desc);
+ print_wrapper_info(jpeg->dev, reg);
+ print_cast_status(jpeg->dev, reg, MXC_JPEG_ENCODE);
+
+ /* validate the configuration descriptor */
+ mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
+}
+
+static void mxc_jpeg_device_run(void *priv)
+{
+ struct mxc_jpeg_ctx *ctx = priv;
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ void __iomem *reg = jpeg->base_reg;
+ struct device *dev = jpeg->dev;
+ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ unsigned long flags;
+ struct mxc_jpeg_q_data *q_data_cap, *q_data_out;
+ struct mxc_jpeg_src_buf *jpeg_src_buf;
+
+ spin_lock_irqsave(&ctx->mxc_jpeg->hw_lock, flags);
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ if (!src_buf || !dst_buf) {
+ dev_err(dev, "Null src or dst buf\n");
+ goto end;
+ }
+
+ q_data_cap = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (!q_data_cap)
+ goto end;
+ q_data_out = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+ if (!q_data_out)
+ goto end;
+ src_buf->sequence = q_data_out->sequence++;
+ dst_buf->sequence = q_data_cap->sequence++;
+
+ v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
+
+ jpeg_src_buf = vb2_to_mxc_buf(&src_buf->vb2_buf);
+ if (jpeg_src_buf->jpeg_parse_error) {
+ jpeg->slot_data[ctx->slot].used = false;
+ v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
+ spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
+ v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+
+ return;
+ }
+
+ /*
+ * TODO: this reset should be removed, once we figure out
+ * how to overcome hardware issues both on encoder and decoder
+ */
+ mxc_jpeg_sw_reset(reg);
+ mxc_jpeg_enable(reg);
+ mxc_jpeg_set_l_endian(reg, 1);
+
+ ctx->slot = mxc_get_free_slot(jpeg->slot_data, MXC_MAX_SLOTS);
+ if (ctx->slot >= MXC_MAX_SLOTS) {
+ dev_err(dev, "No more free slots\n");
+ goto end;
+ }
+ if (!mxc_jpeg_alloc_slot_data(jpeg, ctx->slot)) {
+ dev_err(dev, "Canot allocate slot data\n");
+ goto end;
+ }
+
+ mxc_jpeg_enable_slot(reg, ctx->slot);
+ mxc_jpeg_enable_irq(reg, ctx->slot);
+
+ if (jpeg->mode == MXC_JPEG_ENCODE) {
+ dev_dbg(dev, "Encoding on slot %d\n", ctx->slot);
+ ctx->enc_state = MXC_JPEG_ENC_CONF;
+ mxc_jpeg_config_enc_desc(&dst_buf->vb2_buf, ctx,
+ &src_buf->vb2_buf, &dst_buf->vb2_buf);
+ mxc_jpeg_enc_mode_conf(dev, reg); /* start config phase */
+ } else {
+ dev_dbg(dev, "Decoding on slot %d\n", ctx->slot);
+ print_mxc_buf(jpeg, &src_buf->vb2_buf, 0);
+ mxc_jpeg_config_dec_desc(&dst_buf->vb2_buf, ctx,
+ &src_buf->vb2_buf, &dst_buf->vb2_buf);
+ mxc_jpeg_dec_mode_go(dev, reg);
+ }
+end:
+ spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
+}
+
+static int mxc_jpeg_try_decoder_cmd(struct file *file, void *fh,
+ struct v4l2_decoder_cmd *c)
+{
+ if (c->cmd != V4L2_DEC_CMD_STOP && c->cmd != V4L2_DEC_CMD_START)
+ return -EINVAL;
+
+ c->flags = 0;
+
+ if (c->cmd == V4L2_DEC_CMD_START) {
+ c->start.speed = 0;
+ c->start.format = 0;
+ }
+
+ return 0;
+}
+
+static int mxc_jpeg_decoder_cmd(struct file *file, void *priv,
+ struct v4l2_decoder_cmd *cmd)
+{
+ struct v4l2_fh *fh = file->private_data;
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
+ struct device *dev = ctx->mxc_jpeg->dev;
+ int ret;
+
+ ret = mxc_jpeg_try_decoder_cmd(file, fh, cmd);
+ if (ret < 0)
+ return ret;
+
+ /* Ignore decoder command silently in encoder context */
+ if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE)
+ return 0;
+
+ if (cmd->cmd == V4L2_DEC_CMD_STOP) {
+ dev_dbg(dev, "Received V4L2_DEC_CMD_STOP");
+ if (v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx) == 0) {
+ /* No more src bufs, notify app EOS */
+ notify_eos(ctx);
+ } else {
+ /* will send EOS later*/
+ ctx->stopping = 1;
+ }
+ }
+
+ return 0;
+}
+
+static int mxc_jpeg_try_encoder_cmd(struct file *file, void *fh,
+ struct v4l2_encoder_cmd *c)
+{
+ if (c->cmd != V4L2_ENC_CMD_STOP && c->cmd != V4L2_ENC_CMD_START)
+ return -EINVAL;
+
+ c->flags = 0;
+
+ return 0;
+}
+
+static int mxc_jpeg_encoder_cmd(struct file *file, void *priv,
+ struct v4l2_encoder_cmd *cmd)
+{
+ struct v4l2_fh *fh = file->private_data;
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
+ struct device *dev = ctx->mxc_jpeg->dev;
+ int ret;
+
+ ret = mxc_jpeg_try_encoder_cmd(file, fh, cmd);
+ if (ret < 0)
+ return ret;
+
+ /* Ignore encoder command silently in decoder context */
+ if (ctx->mxc_jpeg->mode != MXC_JPEG_ENCODE)
+ return 0;
+
+ if (cmd->cmd == V4L2_ENC_CMD_STOP) {
+ dev_dbg(dev, "Received V4L2_ENC_CMD_STOP");
+ if (v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx) == 0) {
+ /* No more src bufs, notify app EOS */
+ notify_eos(ctx);
+ } else {
+ /* will send EOS later*/
+ ctx->stopping = 1;
+ }
+ }
+
+ return 0;
+}
+
+static int mxc_jpeg_queue_setup(struct vb2_queue *q,
+ unsigned int *nbuffers,
+ unsigned int *nplanes,
+ unsigned int sizes[],
+ struct device *alloc_ctxs[])
+{
+ struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
+ struct mxc_jpeg_q_data *q_data = NULL;
+ int i;
+
+ q_data = mxc_jpeg_get_q_data(ctx, q->type);
+ if (!q_data)
+ return -EINVAL;
+
+ /* Handle CREATE_BUFS situation - *nplanes != 0 */
+ if (*nplanes) {
+ for (i = 0; i < *nplanes; i++) {
+ if (sizes[i] < q_data->sizeimage[i])
+ return -EINVAL;
+ }
+ }
+
+ /* Handle REQBUFS situation */
+ *nplanes = q_data->fmt->colplanes;
+ for (i = 0; i < *nplanes; i++)
+ sizes[i] = q_data->sizeimage[i];
+
+ return 0;
+}
+
+static int mxc_jpeg_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
+ struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, q->type);
+
+ dev_dbg(ctx->mxc_jpeg->dev, "Start streaming ctx=%p", ctx);
+ q_data->sequence = 0;
+
+ return 0;
+}
+
+static void release_active_buffers(struct vb2_queue *q,
+ enum vb2_buffer_state s)
+{
+ struct vb2_buffer *vb;
+
+ if (!list_empty(&q->queued_list))
+ list_for_each_entry(vb, &q->queued_list, queued_entry) {
+ if (vb->state == VB2_BUF_STATE_ACTIVE)
+ vb2_buffer_done(vb, s);
+ }
+}
+
+static void mxc_jpeg_stop_streaming(struct vb2_queue *q)
+{
+ struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
+
+ dev_dbg(ctx->mxc_jpeg->dev, "Stop streaming ctx=%p", ctx);
+
+ /* Release all active buffers */
+ release_active_buffers(q, VB2_BUF_STATE_ERROR);
+}
+
+struct mxc_jpeg_stream {
+ u8 *addr;
+ u32 loc;
+ u32 end;
+};
+
+static int get_byte(struct mxc_jpeg_stream *stream)
+{
+ int ret;
+
+ if (stream->loc >= stream->end)
+ return -1;
+ ret = stream->addr[stream->loc];
+ stream->loc++;
+ return ret;
+}
+
+static int get_sof(struct device *dev,
+ struct mxc_jpeg_stream *stream,
+ struct mxc_jpeg_sof *sof)
+{
+ int i;
+
+ if (stream->loc + sizeof(struct mxc_jpeg_sof) >= stream->end)
+ return -1;
+ memcpy(sof, &stream->addr[stream->loc], sizeof(struct mxc_jpeg_sof));
+ _bswap16(&sof->length);
+ _bswap16(&sof->height);
+ _bswap16(&sof->width);
+ dev_dbg(dev, "JPEG SOF: precision=%d\n", sof->precision);
+ dev_dbg(dev, "JPEG SOF: height=%d, width=%d\n",
+ sof->height, sof->width);
+ for (i = 0; i < sof->components_no; i++) {
+ dev_dbg(dev, "JPEG SOF: comp_id=%d, H=0x%x, V=0x%x\n",
+ sof->comp[i].id, sof->comp[i].v, sof->comp[i].h);
+ }
+ return 0;
+}
+
+static int mxc_jpeg_valid_comp_id(struct device *dev,
+ struct mxc_jpeg_sof *sof,
+ struct mxc_jpeg_sos *sos)
+{
+ int valid = 1;
+ int i;
+
+ /*
+ * there's a limitation in the IP that the component IDs must be
+ * between 0..4, if they are not, let's patch them
+ */
+ for (i = 0; i < sof->components_no; i++)
+ if (sof->comp[i].id > MXC_JPEG_MAX_COMPONENTS) {
+ valid = 0;
+ dev_err(dev, "Component %d has invalid ID: %d",
+ i, sof->comp[i].id);
+ }
+ if (!valid)
+ /* patch all comp IDs if at least one is invalid */
+ for (i = 0; i < sof->components_no; i++) {
+ dev_warn(dev, "Component %d ID patched to: %d",
+ i, i + 1);
+ sof->comp[i].id = i + 1;
+ sos->comp[i].id = i + 1;
+ }
+
+ return valid;
+}
+
+static enum mxc_jpeg_image_format
+mxc_jpeg_get_image_format(struct device *dev, const struct mxc_jpeg_sof *sof)
+{
+ if (sof->components_no == 1) {
+ dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_GRAY\n");
+ return MXC_JPEG_GRAY;
+ }
+ if (sof->components_no == 3) {
+ if (sof->comp[0].h == 2 && sof->comp[0].v == 2 &&
+ sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
+ sof->comp[2].h == 1 && sof->comp[2].v == 1){
+ dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV420\n");
+ return MXC_JPEG_YUV420;
+ }
+ if (sof->comp[0].h == 2 && sof->comp[0].v == 1 &&
+ sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
+ sof->comp[2].h == 1 && sof->comp[2].v == 1){
+ dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV422\n");
+ return MXC_JPEG_YUV422;
+ }
+ if (sof->comp[0].h == 1 && sof->comp[0].v == 1 &&
+ sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
+ sof->comp[2].h == 1 && sof->comp[2].v == 1){
+ dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV444\n");
+ return MXC_JPEG_YUV444;
+ }
+ }
+ if (sof->components_no == 4) {
+ if (sof->comp[0].h == 1 && sof->comp[0].v == 1 &&
+ sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
+ sof->comp[2].h == 1 && sof->comp[2].v == 1 &&
+ sof->comp[3].h == 1 && sof->comp[3].v == 1){
+ /* this is not tested */
+ dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_ARGB\n");
+ return MXC_JPEG_ARGB;
+ }
+ }
+ dev_err(dev, "Could not identify image format\n");
+ return MXC_JPEG_INVALID;
+}
+
+static void mxc_jpeg_bytesperline(struct mxc_jpeg_q_data *q,
+ u32 precision)
+{
+ /* Bytes distance between the leftmost pixels in two adjacent lines */
+ if (q->fmt->fourcc == V4L2_PIX_FMT_JPEG) {
+ /* bytesperline unused for compressed formats */
+ q->bytesperline[0] = 0;
+ q->bytesperline[1] = 0;
+ } else if (q->fmt->fourcc == V4L2_PIX_FMT_NV12) {
+ /* When the image format is planar the bytesperline value
+ * applies to the first plane and is divided by the same factor
+ * as the width field for the other planes
+ */
+ q->bytesperline[0] = q->w * (precision / 8) *
+ (q->fmt->depth / 8);
+ q->bytesperline[1] = q->bytesperline[0];
+ } else {
+ /* single plane formats */
+ q->bytesperline[0] = q->w * (precision / 8) *
+ (q->fmt->depth / 8);
+ q->bytesperline[1] = 0;
+ }
+}
+
+static void mxc_jpeg_sizeimage(struct mxc_jpeg_q_data *q)
+{
+ if (q->fmt->fourcc == V4L2_PIX_FMT_JPEG) {
+ /* if no sizeimage from user, assume worst jpeg compression */
+ if (!q->sizeimage[0])
+ q->sizeimage[0] = 6 * q->w * q->h;
+ q->sizeimage[1] = 0;
+
+ if (q->sizeimage[0] > MXC_JPEG_MAX_SIZEIMAGE)
+ q->sizeimage[0] = MXC_JPEG_MAX_SIZEIMAGE;
+
+ /* jpeg stream size must be multiple of 1K */
+ q->sizeimage[0] = ALIGN(q->sizeimage[0], 1024);
+ } else {
+ q->sizeimage[0] = q->bytesperline[0] * q->h;
+ q->sizeimage[1] = 0;
+ if (q->fmt->fourcc == V4L2_PIX_FMT_NV12)
+ q->sizeimage[1] = q->sizeimage[0] / 2;
+ }
+}
+
+static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
+ u8 *src_addr, u32 size, bool *dht_needed)
+{
+ struct device *dev = ctx->mxc_jpeg->dev;
+ struct mxc_jpeg_q_data *q_data_out, *q_data_cap;
+ enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ struct mxc_jpeg_stream stream;
+ bool notfound = true;
+ bool app14 = false;
+ bool src_chg = false;
+ u8 app14_transform = 0;
+ struct mxc_jpeg_sof sof, *psof = NULL;
+ struct mxc_jpeg_sos *psos = NULL;
+ int byte;
+ u8 *next = NULL;
+ enum mxc_jpeg_image_format img_fmt;
+ u32 fourcc;
+
+ memset(&sof, 0, sizeof(struct mxc_jpeg_sof));
+ stream.addr = src_addr;
+ stream.end = size;
+ stream.loc = 0;
+ *dht_needed = true;
+
+ /* check stream starts with SOI */
+ byte = get_byte(&stream);
+ if (byte == -1 || byte != 0xFF)
+ return -EINVAL;
+ byte = get_byte(&stream);
+ if (byte == -1 || byte != 0xD8)
+ return -EINVAL;
+
+ while (notfound) {
+ byte = get_byte(&stream);
+ if (byte == -1)
+ return -EINVAL;
+ if (byte != 0xff)
+ continue;
+ do {
+ byte = get_byte(&stream);
+ } while (byte == 0xff);
+ if (byte == -1)
+ return false;
+ if (byte == 0)
+ continue;
+ switch (byte) {
+ case DHT:
+ /* DHT marker present, no need to inject default one */
+ *dht_needed = false;
+ break;
+ case SOF2: /* Progressive DCF frame definition */
+ dev_err(dev,
+ "Progressive JPEG not supported by hardware");
+ return -EINVAL;
+ case SOF1: /* Extended sequential DCF frame definition */
+ case SOF0: /* Baseline sequential DCF frame definition */
+ if (get_sof(dev, &stream, &sof) == -1)
+ break;
+ next = stream.addr + stream.loc;
+ psof = (struct mxc_jpeg_sof *)next;
+ break;
+ case SOS:
+ next = stream.addr + stream.loc;
+ psos = (struct mxc_jpeg_sos *)next;
+ notfound = false;
+ break;
+ case APP14:
+ app14 = true;
+ /*
+ * Application Data Syntax is:
+ * 2 bytes(APPn:0xFF,0xEE), 2 bytes(Lp), Ap1...ApLp-2
+ * The transform flag is in Ap12
+ * stream.loc is now on APPn-0xEE byte
+ */
+ app14_transform = *(stream.addr + stream.loc + 12 + 1);
+ break;
+ default:
+ notfound = true;
+ }
+ }
+ q_data_out = mxc_jpeg_get_q_data(ctx,
+ V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
+ if (q_data_out->w == 0 && q_data_out->h == 0) {
+ dev_warn(dev, "Invalid user resolution 0x0");
+ dev_warn(dev, "Keeping resolution from JPEG: %dx%d",
+ sof.width, sof.height);
+ q_data_out->w = sof.width;
+ q_data_out->h = sof.height;
+ } else if (sof.width != q_data_out->w || sof.height != q_data_out->h) {
+ dev_err(dev,
+ "Resolution mismatch: %dx%d (JPEG) versus %dx%d(user)",
+ sof.width, sof.height, q_data_out->w, q_data_out->h);
+ return -EINVAL;
+ }
+ if (sof.width % 8 != 0 || sof.height % 8 != 0) {
+ dev_err(dev, "JPEG width or height not multiple of 8: %dx%d\n",
+ sof.width, sof.height);
+ return -EINVAL;
+ }
+ if (sof.width > MXC_JPEG_MAX_WIDTH ||
+ sof.height > MXC_JPEG_MAX_HEIGHT) {
+ dev_err(dev, "JPEG width or height should be <= 8192: %dx%d\n",
+ sof.width, sof.height);
+ return -EINVAL;
+ }
+ if (sof.width < MXC_JPEG_MIN_WIDTH ||
+ sof.height < MXC_JPEG_MIN_HEIGHT) {
+ dev_err(dev, "JPEG width or height should be > 64: %dx%d\n",
+ sof.width, sof.height);
+ return -EINVAL;
+ }
+ if (sof.components_no > MXC_JPEG_MAX_COMPONENTS) {
+ dev_err(dev, "JPEG number of components should be <=%d",
+ MXC_JPEG_MAX_COMPONENTS);
+ return -EINVAL;
+ }
+ /* check and, if necessary, patch component IDs*/
+ if (!mxc_jpeg_valid_comp_id(dev, psof, psos))
+ dev_warn(dev, "JPEG component ids should be 0-3 or 1-4");
+
+ img_fmt = mxc_jpeg_get_image_format(dev, &sof);
+ if (img_fmt == MXC_JPEG_INVALID)
+ return -EINVAL;
+
+ /*
+ * If the transform flag from APP14 marker is 0, images that are
+ * encoded with 3 components have RGB colorspace, see Recommendation
+ * ITU-T T.872 chapter 6.5.3 APP14 marker segment for colour encoding
+ */
+ if (img_fmt == MXC_JPEG_YUV444 && app14 && app14_transform == 0)
+ img_fmt = MXC_JPEG_RGB;
+
+ if (mxc_jpeg_imgfmt_to_fourcc(img_fmt, &fourcc)) {
+ dev_err(dev, "Fourcc not found for %d", img_fmt);
+ return -EINVAL;
+ }
+
+ /*
+ * set-up the capture queue with the pixelformat and resolution
+ * detected from the jpeg output stream
+ */
+ q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
+ if (q_data_cap->w != sof.width || q_data_cap->h != sof.height)
+ src_chg = true;
+ q_data_cap->w = sof.width;
+ q_data_cap->h = sof.height;
+ q_data_cap->fmt = mxc_jpeg_find_format(ctx, fourcc);
+ q_data_cap->w_adjusted = q_data_cap->w;
+ q_data_cap->h_adjusted = q_data_cap->h;
+ /*
+ * align up the resolution for CAST IP,
+ * but leave the buffer resolution unchanged
+ */
+ v4l_bound_align_image(&q_data_cap->w_adjusted,
+ q_data_cap->w_adjusted, /* adjust up */
+ MXC_JPEG_MAX_WIDTH,
+ q_data_cap->fmt->h_align,
+ &q_data_cap->h_adjusted,
+ q_data_cap->h_adjusted, /* adjust up */
+ MXC_JPEG_MAX_HEIGHT,
+ q_data_cap->fmt->v_align,
+ 0);
+ dev_dbg(dev, "Detected jpeg res=(%dx%d)->(%dx%d), pixfmt=%c%c%c%c\n",
+ q_data_cap->w, q_data_cap->h,
+ q_data_cap->w_adjusted, q_data_cap->h_adjusted,
+ (fourcc & 0xff),
+ (fourcc >> 8) & 0xff,
+ (fourcc >> 16) & 0xff,
+ (fourcc >> 24) & 0xff);
+
+ /* setup bytesperline/sizeimage for capture queue */
+ mxc_jpeg_bytesperline(q_data_cap, sof.precision);
+ mxc_jpeg_sizeimage(q_data_cap);
+
+ /*
+ * if the CAPTURE format was updated with new values, regardless of
+ * whether they match the values set by the client or not, signal
+ * a source change event
+ */
+ if (src_chg)
+ notify_src_chg(ctx);
+
+ return 0;
+}
+
+static void mxc_jpeg_buf_queue(struct vb2_buffer *vb)
+{
+ int ret;
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct mxc_jpeg_src_buf *jpeg_src_buf;
+
+ if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ goto end;
+
+ /* for V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE */
+ if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE)
+ goto end;
+
+ jpeg_src_buf = vb2_to_mxc_buf(vb);
+ jpeg_src_buf->jpeg_parse_error = false;
+ ret = mxc_jpeg_parse(ctx,
+ (u8 *)vb2_plane_vaddr(vb, 0),
+ vb2_get_plane_payload(vb, 0),
+ &jpeg_src_buf->dht_needed);
+ if (ret)
+ jpeg_src_buf->jpeg_parse_error = true;
+
+end:
+ v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
+}
+
+static int mxc_jpeg_buf_out_validate(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+
+ if (vbuf->field == V4L2_FIELD_ANY)
+ vbuf->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+static int mxc_jpeg_buf_prepare(struct vb2_buffer *vb)
+{
+ struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct mxc_jpeg_q_data *q_data = NULL;
+ struct device *dev = ctx->mxc_jpeg->dev;
+ unsigned long sizeimage;
+ int i;
+
+ q_data = mxc_jpeg_get_q_data(ctx, vb->vb2_queue->type);
+ if (!q_data)
+ return -EINVAL;
+ for (i = 0; i < q_data->fmt->colplanes; i++) {
+ sizeimage = q_data->sizeimage[i];
+ if (vb2_plane_size(vb, i) < sizeimage) {
+ dev_err(dev, "plane %d too small (%lu < %lu)",
+ i, vb2_plane_size(vb, i), sizeimage);
+ return -EINVAL;
+ }
+ vb2_set_plane_payload(vb, i, sizeimage);
+ }
+ return 0;
+}
+
+static const struct vb2_ops mxc_jpeg_qops = {
+ .queue_setup = mxc_jpeg_queue_setup,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .buf_out_validate = mxc_jpeg_buf_out_validate,
+ .buf_prepare = mxc_jpeg_buf_prepare,
+ .start_streaming = mxc_jpeg_start_streaming,
+ .stop_streaming = mxc_jpeg_stop_streaming,
+ .buf_queue = mxc_jpeg_buf_queue,
+};
+
+static int mxc_jpeg_queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct mxc_jpeg_ctx *ctx = priv;
+ int ret;
+
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+ src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+ src_vq->drv_priv = ctx;
+ src_vq->buf_struct_size = sizeof(struct mxc_jpeg_src_buf);
+ src_vq->ops = &mxc_jpeg_qops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+ src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ src_vq->lock = &ctx->mxc_jpeg->lock;
+ src_vq->dev = ctx->mxc_jpeg->dev;
+ src_vq->allow_zero_bytesused = 1; /* keep old userspace apps working */
+
+ ret = vb2_queue_init(src_vq);
+ if (ret)
+ return ret;
+
+ dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+ dst_vq->drv_priv = ctx;
+ dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ dst_vq->ops = &mxc_jpeg_qops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+ dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ dst_vq->lock = &ctx->mxc_jpeg->lock;
+ dst_vq->dev = ctx->mxc_jpeg->dev;
+
+ ret = vb2_queue_init(dst_vq);
+ return ret;
+}
+
+static void mxc_jpeg_set_default_params(struct mxc_jpeg_ctx *ctx)
+{
+ struct mxc_jpeg_q_data *out_q = &ctx->out_q;
+ struct mxc_jpeg_q_data *cap_q = &ctx->cap_q;
+ struct mxc_jpeg_q_data *q[2] = {out_q, cap_q};
+ int i;
+
+ if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE) {
+ out_q->fmt = mxc_jpeg_find_format(ctx, MXC_JPEG_DEFAULT_PFMT);
+ cap_q->fmt = mxc_jpeg_find_format(ctx, V4L2_PIX_FMT_JPEG);
+ } else {
+ out_q->fmt = mxc_jpeg_find_format(ctx, V4L2_PIX_FMT_JPEG);
+ cap_q->fmt = mxc_jpeg_find_format(ctx, MXC_JPEG_DEFAULT_PFMT);
+ }
+
+ for (i = 0; i < 2; i++) {
+ q[i]->w = MXC_JPEG_DEFAULT_WIDTH;
+ q[i]->h = MXC_JPEG_DEFAULT_HEIGHT;
+ q[i]->w_adjusted = MXC_JPEG_DEFAULT_WIDTH;
+ q[i]->h_adjusted = MXC_JPEG_DEFAULT_HEIGHT;
+ mxc_jpeg_bytesperline(q[i], 8);
+ mxc_jpeg_sizeimage(q[i]);
+ }
+}
+
+static int mxc_jpeg_open(struct file *file)
+{
+ struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
+ struct video_device *mxc_vfd = video_devdata(file);
+ struct device *dev = mxc_jpeg->dev;
+ struct mxc_jpeg_ctx *ctx;
+ int ret = 0;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ if (mutex_lock_interruptible(&mxc_jpeg->lock)) {
+ ret = -ERESTARTSYS;
+ goto free;
+ }
+
+ v4l2_fh_init(&ctx->fh, mxc_vfd);
+ file->private_data = &ctx->fh;
+ v4l2_fh_add(&ctx->fh);
+
+ ctx->mxc_jpeg = mxc_jpeg;
+
+ ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(mxc_jpeg->m2m_dev, ctx,
+ mxc_jpeg_queue_init);
+
+ if (IS_ERR(ctx->fh.m2m_ctx)) {
+ ret = PTR_ERR(ctx->fh.m2m_ctx);
+ goto error;
+ }
+
+ mxc_jpeg_set_default_params(ctx);
+ ctx->slot = MXC_MAX_SLOTS; /* slot not allocated yet */
+
+ if (mxc_jpeg->mode == MXC_JPEG_DECODE)
+ dev_dbg(dev, "Opened JPEG decoder instance %p\n", ctx);
+ else
+ dev_dbg(dev, "Opened JPEG encoder instance %p\n", ctx);
+ mutex_unlock(&mxc_jpeg->lock);
+
+ return 0;
+
+error:
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ mutex_unlock(&mxc_jpeg->lock);
+free:
+ kfree(ctx);
+ return ret;
+}
+
+static int mxc_jpeg_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
+
+ strscpy(cap->driver, MXC_JPEG_NAME " decoder", sizeof(cap->driver));
+ strscpy(cap->card, MXC_JPEG_NAME " decoder", sizeof(cap->card));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ dev_name(mxc_jpeg->dev));
+ cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+
+ return 0;
+}
+
+static int mxc_jpeg_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+
+ if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE)
+ return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
+ MXC_JPEG_FMT_TYPE_ENC);
+ else
+ return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
+ MXC_JPEG_FMT_TYPE_RAW);
+}
+
+static int mxc_jpeg_enum_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+
+ if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE)
+ return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
+ MXC_JPEG_FMT_TYPE_ENC);
+ else
+ return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
+ MXC_JPEG_FMT_TYPE_RAW);
+}
+
+static int mxc_jpeg_try_fmt(struct v4l2_format *f, struct mxc_jpeg_fmt *fmt,
+ struct mxc_jpeg_ctx *ctx, int q_type)
+{
+ struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
+ struct v4l2_plane_pix_format *pfmt;
+ u32 w = (pix_mp->width < MXC_JPEG_MAX_WIDTH) ?
+ pix_mp->width : MXC_JPEG_MAX_WIDTH;
+ u32 h = (pix_mp->height < MXC_JPEG_MAX_HEIGHT) ?
+ pix_mp->height : MXC_JPEG_MAX_HEIGHT;
+ int i;
+ struct mxc_jpeg_q_data tmp_q;
+
+ memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
+ pix_mp->field = V4L2_FIELD_NONE;
+ pix_mp->num_planes = fmt->colplanes;
+ pix_mp->pixelformat = fmt->fourcc;
+
+ /*
+ * use MXC_JPEG_H_ALIGN instead of fmt->v_align, for vertical
+ * alignment, to loosen up the alignment to multiple of 8,
+ * otherwise NV12-1080p fails as 1080 is not a multiple of 16
+ */
+ v4l_bound_align_image(&w,
+ MXC_JPEG_MIN_WIDTH,
+ w, /* adjust downwards*/
+ fmt->h_align,
+ &h,
+ MXC_JPEG_MIN_HEIGHT,
+ h, /* adjust downwards*/
+ MXC_JPEG_H_ALIGN,
+ 0);
+ pix_mp->width = w; /* negotiate the width */
+ pix_mp->height = h; /* negotiate the height */
+
+ /* get user input into the tmp_q */
+ tmp_q.w = w;
+ tmp_q.h = h;
+ tmp_q.fmt = fmt;
+ for (i = 0; i < pix_mp->num_planes; i++) {
+ pfmt = &pix_mp->plane_fmt[i];
+ tmp_q.bytesperline[i] = pfmt->bytesperline;
+ tmp_q.sizeimage[i] = pfmt->sizeimage;
+ }
+
+ /* calculate bytesperline & sizeimage into the tmp_q */
+ mxc_jpeg_bytesperline(&tmp_q, 8);
+ mxc_jpeg_sizeimage(&tmp_q);
+
+ /* adjust user format according to our calculations */
+ for (i = 0; i < pix_mp->num_planes; i++) {
+ pfmt = &pix_mp->plane_fmt[i];
+ memset(pfmt->reserved, 0, sizeof(pfmt->reserved));
+ pfmt->bytesperline = tmp_q.bytesperline[i];
+ pfmt->sizeimage = tmp_q.sizeimage[i];
+ }
+
+ /* fix colorspace information to sRGB for both output & capture */
+ pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
+ pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
+ pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
+ pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
+
+ return 0;
+}
+
+static int mxc_jpeg_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ struct device *dev = jpeg->dev;
+ struct mxc_jpeg_fmt *fmt;
+ u32 fourcc = f->fmt.pix_mp.pixelformat;
+
+ int q_type = (jpeg->mode == MXC_JPEG_DECODE) ?
+ MXC_JPEG_FMT_TYPE_RAW : MXC_JPEG_FMT_TYPE_ENC;
+
+ if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
+ dev_err(dev, "TRY_FMT with Invalid type: %d\n", f->type);
+ return -EINVAL;
+ }
+
+ fmt = mxc_jpeg_find_format(ctx, fourcc);
+ if (!fmt || fmt->flags != q_type) {
+ dev_warn(dev, "Format not supported: %c%c%c%c, use the default.\n",
+ (fourcc & 0xff),
+ (fourcc >> 8) & 0xff,
+ (fourcc >> 16) & 0xff,
+ (fourcc >> 24) & 0xff);
+ f->fmt.pix_mp.pixelformat = (jpeg->mode == MXC_JPEG_DECODE) ?
+ MXC_JPEG_DEFAULT_PFMT : V4L2_PIX_FMT_JPEG;
+ fmt = mxc_jpeg_find_format(ctx, f->fmt.pix_mp.pixelformat);
+ }
+ return mxc_jpeg_try_fmt(f, fmt, ctx, q_type);
+}
+
+static int mxc_jpeg_try_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ struct device *dev = jpeg->dev;
+ struct mxc_jpeg_fmt *fmt;
+ u32 fourcc = f->fmt.pix_mp.pixelformat;
+
+ int q_type = (jpeg->mode == MXC_JPEG_ENCODE) ?
+ MXC_JPEG_FMT_TYPE_RAW : MXC_JPEG_FMT_TYPE_ENC;
+
+ if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
+ dev_err(dev, "TRY_FMT with Invalid type: %d\n", f->type);
+ return -EINVAL;
+ }
+
+ fmt = mxc_jpeg_find_format(ctx, fourcc);
+ if (!fmt || fmt->flags != q_type) {
+ dev_warn(dev, "Format not supported: %c%c%c%c, use the default.\n",
+ (fourcc & 0xff),
+ (fourcc >> 8) & 0xff,
+ (fourcc >> 16) & 0xff,
+ (fourcc >> 24) & 0xff);
+ f->fmt.pix_mp.pixelformat = (jpeg->mode == MXC_JPEG_ENCODE) ?
+ MXC_JPEG_DEFAULT_PFMT : V4L2_PIX_FMT_JPEG;
+ fmt = mxc_jpeg_find_format(ctx, f->fmt.pix_mp.pixelformat);
+ }
+ return mxc_jpeg_try_fmt(f, fmt, ctx, q_type);
+}
+
+static int mxc_jpeg_s_fmt(struct mxc_jpeg_ctx *ctx,
+ struct v4l2_format *f)
+{
+ struct vb2_queue *vq;
+ struct mxc_jpeg_q_data *q_data = NULL;
+ struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ int i;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ q_data = mxc_jpeg_get_q_data(ctx, f->type);
+
+ if (vb2_is_busy(vq)) {
+ v4l2_err(&jpeg->v4l2_dev, "queue busy\n");
+ return -EBUSY;
+ }
+
+ q_data->fmt = mxc_jpeg_find_format(ctx, pix_mp->pixelformat);
+ q_data->w = pix_mp->width;
+ q_data->h = pix_mp->height;
+
+ q_data->w_adjusted = q_data->w;
+ q_data->h_adjusted = q_data->h;
+ if (jpeg->mode == MXC_JPEG_DECODE) {
+ /*
+ * align up the resolution for CAST IP,
+ * but leave the buffer resolution unchanged
+ */
+ v4l_bound_align_image(&q_data->w_adjusted,
+ q_data->w_adjusted, /* adjust upwards */
+ MXC_JPEG_MAX_WIDTH,
+ q_data->fmt->h_align,
+ &q_data->h_adjusted,
+ q_data->h_adjusted, /* adjust upwards */
+ MXC_JPEG_MAX_HEIGHT,
+ q_data->fmt->v_align,
+ 0);
+ } else {
+ /*
+ * align down the resolution for CAST IP,
+ * but leave the buffer resolution unchanged
+ */
+ v4l_bound_align_image(&q_data->w_adjusted,
+ MXC_JPEG_MIN_WIDTH,
+ q_data->w_adjusted, /* adjust downwards*/
+ q_data->fmt->h_align,
+ &q_data->h_adjusted,
+ MXC_JPEG_MIN_HEIGHT,
+ q_data->h_adjusted, /* adjust downwards*/
+ q_data->fmt->v_align,
+ 0);
+ }
+
+ for (i = 0; i < pix_mp->num_planes; i++) {
+ q_data->bytesperline[i] = pix_mp->plane_fmt[i].bytesperline;
+ q_data->sizeimage[i] = pix_mp->plane_fmt[i].sizeimage;
+ }
+
+ return 0;
+}
+
+static int mxc_jpeg_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ int ret;
+
+ ret = mxc_jpeg_try_fmt_vid_cap(file, priv, f);
+ if (ret)
+ return ret;
+
+ return mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f);
+}
+
+static int mxc_jpeg_s_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ int ret;
+
+ ret = mxc_jpeg_try_fmt_vid_out(file, priv, f);
+ if (ret)
+ return ret;
+
+ return mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f);
+}
+
+static int mxc_jpeg_g_fmt_vid(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ struct device *dev = jpeg->dev;
+ struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
+ struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, f->type);
+ int i;
+
+ if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
+ dev_err(dev, "G_FMT with Invalid type: %d\n", f->type);
+ return -EINVAL;
+ }
+
+ pix_mp->pixelformat = q_data->fmt->fourcc;
+ pix_mp->width = q_data->w;
+ pix_mp->height = q_data->h;
+ pix_mp->field = V4L2_FIELD_NONE;
+
+ /* fix colorspace information to sRGB for both output & capture */
+ pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
+ pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
+ pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
+ pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
+
+ pix_mp->num_planes = q_data->fmt->colplanes;
+ for (i = 0; i < pix_mp->num_planes; i++) {
+ pix_mp->plane_fmt[i].bytesperline = q_data->bytesperline[i];
+ pix_mp->plane_fmt[i].sizeimage = q_data->sizeimage[i];
+ }
+
+ return 0;
+}
+
+static int mxc_jpeg_subscribe_event(struct v4l2_fh *fh,
+ const struct v4l2_event_subscription *sub)
+{
+ switch (sub->type) {
+ case V4L2_EVENT_EOS:
+ return v4l2_event_subscribe(fh, sub, 0, NULL);
+ case V4L2_EVENT_SOURCE_CHANGE:
+ return v4l2_src_change_event_subscribe(fh, sub);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int mxc_jpeg_qbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct v4l2_fh *fh = file->private_data;
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+ struct device *dev = ctx->mxc_jpeg->dev;
+ struct vb2_queue *vq;
+
+ dev_dbg(dev, "QBUF type=%d, index=%d", buf->type, buf->index);
+ vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
+ if (buf->index >= vq->num_buffers) {
+ dev_err(dev, "buffer index out of range\n");
+ return -EINVAL;
+ }
+
+ return v4l2_m2m_qbuf(file, fh->m2m_ctx, buf);
+}
+
+static int mxc_jpeg_dqbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct v4l2_fh *fh = file->private_data;
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+ struct device *dev = ctx->mxc_jpeg->dev;
+ int num_src_ready = v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx);
+ int ret;
+
+ dev_dbg(dev, "DQBUF type=%d, index=%d", buf->type, buf->index);
+ if (ctx->stopping == 1 && num_src_ready == 0) {
+ /* No more src bufs, notify app EOS */
+ notify_eos(ctx);
+ ctx->stopping = 0;
+ }
+
+ ret = v4l2_m2m_dqbuf(file, fh->m2m_ctx, buf);
+ buf->field = V4L2_FIELD_NONE;
+
+ return ret;
+}
+
+static const struct v4l2_ioctl_ops mxc_jpeg_ioctl_ops = {
+ .vidioc_querycap = mxc_jpeg_querycap,
+ .vidioc_enum_fmt_vid_cap = mxc_jpeg_enum_fmt_vid_cap,
+ .vidioc_enum_fmt_vid_out = mxc_jpeg_enum_fmt_vid_out,
+
+ .vidioc_try_fmt_vid_cap_mplane = mxc_jpeg_try_fmt_vid_cap,
+ .vidioc_try_fmt_vid_out_mplane = mxc_jpeg_try_fmt_vid_out,
+
+ .vidioc_s_fmt_vid_cap_mplane = mxc_jpeg_s_fmt_vid_cap,
+ .vidioc_s_fmt_vid_out_mplane = mxc_jpeg_s_fmt_vid_out,
+
+ .vidioc_g_fmt_vid_cap_mplane = mxc_jpeg_g_fmt_vid,
+ .vidioc_g_fmt_vid_out_mplane = mxc_jpeg_g_fmt_vid,
+
+ .vidioc_subscribe_event = mxc_jpeg_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+
+ .vidioc_try_decoder_cmd = mxc_jpeg_try_decoder_cmd,
+ .vidioc_decoder_cmd = mxc_jpeg_decoder_cmd,
+ .vidioc_try_encoder_cmd = mxc_jpeg_try_encoder_cmd,
+ .vidioc_encoder_cmd = mxc_jpeg_encoder_cmd,
+
+ .vidioc_qbuf = mxc_jpeg_qbuf,
+ .vidioc_dqbuf = mxc_jpeg_dqbuf,
+
+ .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
+ .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
+ .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
+ .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
+ .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+ .vidioc_streamon = v4l2_m2m_ioctl_streamon,
+ .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
+};
+
+static int mxc_jpeg_release(struct file *file)
+{
+ struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(file->private_data);
+ struct device *dev = mxc_jpeg->dev;
+
+ mutex_lock(&mxc_jpeg->lock);
+ if (mxc_jpeg->mode == MXC_JPEG_DECODE)
+ dev_dbg(dev, "Release JPEG decoder instance on slot %d.",
+ ctx->slot);
+ else
+ dev_dbg(dev, "Release JPEG encoder instance on slot %d.",
+ ctx->slot);
+ v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ kfree(ctx);
+ mutex_unlock(&mxc_jpeg->lock);
+
+ return 0;
+}
+
+static const struct v4l2_file_operations mxc_jpeg_fops = {
+ .owner = THIS_MODULE,
+ .open = mxc_jpeg_open,
+ .release = mxc_jpeg_release,
+ .poll = v4l2_m2m_fop_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = v4l2_m2m_fop_mmap,
+};
+
+static struct v4l2_m2m_ops mxc_jpeg_m2m_ops = {
+ .device_run = mxc_jpeg_device_run,
+};
+
+static void mxc_jpeg_detach_pm_domains(struct mxc_jpeg_dev *jpeg)
+{
+ int i;
+
+ for (i = 0; i < jpeg->num_domains; i++) {
+ if (jpeg->pd_link[i] && !IS_ERR(jpeg->pd_link[i]))
+ device_link_del(jpeg->pd_link[i]);
+ if (jpeg->pd_dev[i] && !IS_ERR(jpeg->pd_dev[i]))
+ dev_pm_domain_detach(jpeg->pd_dev[i], true);
+ jpeg->pd_dev[i] = NULL;
+ jpeg->pd_link[i] = NULL;
+ }
+}
+
+static int mxc_jpeg_attach_pm_domains(struct mxc_jpeg_dev *jpeg)
+{
+ struct device *dev = jpeg->dev;
+ struct device_node *np = jpeg->pdev->dev.of_node;
+ int i;
+ int ret;
+
+ jpeg->num_domains = of_count_phandle_with_args(np, "power-domains",
+ "#power-domain-cells");
+ if (jpeg->num_domains < 0) {
+ dev_err(dev, "No power domains defined for jpeg node\n");
+ return jpeg->num_domains;
+ }
+
+ jpeg->pd_dev = devm_kmalloc_array(dev, jpeg->num_domains,
+ sizeof(*jpeg->pd_dev), GFP_KERNEL);
+ if (!jpeg->pd_dev)
+ return -ENOMEM;
+
+ jpeg->pd_link = devm_kmalloc_array(dev, jpeg->num_domains,
+ sizeof(*jpeg->pd_link), GFP_KERNEL);
+ if (!jpeg->pd_link)
+ return -ENOMEM;
+
+ for (i = 0; i < jpeg->num_domains; i++) {
+ jpeg->pd_dev[i] = dev_pm_domain_attach_by_id(dev, i);
+ if (IS_ERR(jpeg->pd_dev[i])) {
+ ret = PTR_ERR(jpeg->pd_dev[i]);
+ goto fail;
+ }
+
+ jpeg->pd_link[i] = device_link_add(dev, jpeg->pd_dev[i],
+ DL_FLAG_STATELESS |
+ DL_FLAG_PM_RUNTIME |
+ DL_FLAG_RPM_ACTIVE);
+ if (IS_ERR(jpeg->pd_link[i])) {
+ ret = PTR_ERR(jpeg->pd_link[i]);
+ goto fail;
+ }
+ }
+
+ return 0;
+fail:
+ mxc_jpeg_detach_pm_domains(jpeg);
+ return ret;
+}
+
+static int mxc_jpeg_probe(struct platform_device *pdev)
+{
+ struct mxc_jpeg_dev *jpeg;
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ int dec_irq;
+ int ret;
+ int mode;
+ const struct of_device_id *of_id;
+ unsigned int slot;
+
+ of_id = of_match_node(mxc_jpeg_match, dev->of_node);
+ mode = (int)(u64)of_id->data;
+
+ jpeg = devm_kzalloc(dev, sizeof(struct mxc_jpeg_dev), GFP_KERNEL);
+ if (!jpeg)
+ return -ENOMEM;
+
+ mutex_init(&jpeg->lock);
+ spin_lock_init(&jpeg->hw_lock);
+
+ ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
+ if (ret) {
+ dev_err(&pdev->dev, "No suitable DMA available.\n");
+ goto err_irq;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ jpeg->base_reg = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(jpeg->base_reg))
+ return PTR_ERR(jpeg->base_reg);
+
+ for (slot = 0; slot < MXC_MAX_SLOTS; slot++) {
+ dec_irq = platform_get_irq(pdev, slot);
+ if (dec_irq < 0) {
+ dev_err(&pdev->dev, "Failed to get irq %d\n", dec_irq);
+ ret = dec_irq;
+ goto err_irq;
+ }
+ ret = devm_request_irq(&pdev->dev, dec_irq, mxc_jpeg_dec_irq,
+ 0, pdev->name, jpeg);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to request irq %d (%d)\n",
+ dec_irq, ret);
+ goto err_irq;
+ }
+ }
+
+ jpeg->pdev = pdev;
+ jpeg->dev = dev;
+ jpeg->mode = mode;
+
+ ret = mxc_jpeg_attach_pm_domains(jpeg);
+ if (ret < 0) {
+ dev_err(dev, "failed to attach power domains %d\n", ret);
+ return ret;
+ }
+
+ /* v4l2 */
+ ret = v4l2_device_register(dev, &jpeg->v4l2_dev);
+ if (ret) {
+ dev_err(dev, "failed to register v4l2 device\n");
+ goto err_register;
+ }
+ jpeg->m2m_dev = v4l2_m2m_init(&mxc_jpeg_m2m_ops);
+ if (IS_ERR(jpeg->m2m_dev)) {
+ dev_err(dev, "failed to register v4l2 device\n");
+ goto err_m2m;
+ }
+
+ jpeg->dec_vdev = video_device_alloc();
+ if (!jpeg->dec_vdev) {
+ dev_err(dev, "failed to register v4l2 device\n");
+ goto err_vdev_alloc;
+ }
+ if (mode == MXC_JPEG_ENCODE)
+ snprintf(jpeg->dec_vdev->name,
+ sizeof(jpeg->dec_vdev->name),
+ "%s-enc", MXC_JPEG_NAME);
+ else
+ snprintf(jpeg->dec_vdev->name,
+ sizeof(jpeg->dec_vdev->name),
+ "%s-dec", MXC_JPEG_NAME);
+
+ jpeg->dec_vdev->fops = &mxc_jpeg_fops;
+ jpeg->dec_vdev->ioctl_ops = &mxc_jpeg_ioctl_ops;
+ jpeg->dec_vdev->minor = -1;
+ jpeg->dec_vdev->release = video_device_release;
+ jpeg->dec_vdev->lock = &jpeg->lock; /* lock for ioctl serialization */
+ jpeg->dec_vdev->v4l2_dev = &jpeg->v4l2_dev;
+ jpeg->dec_vdev->vfl_dir = VFL_DIR_M2M;
+ jpeg->dec_vdev->device_caps = V4L2_CAP_STREAMING |
+ V4L2_CAP_VIDEO_M2M_MPLANE;
+
+ ret = video_register_device(jpeg->dec_vdev, VFL_TYPE_VIDEO, -1);
+ if (ret) {
+ dev_err(dev, "failed to register video device\n");
+ goto err_vdev_register;
+ }
+ video_set_drvdata(jpeg->dec_vdev, jpeg);
+ if (mode == MXC_JPEG_ENCODE)
+ v4l2_info(&jpeg->v4l2_dev,
+ "encoder device registered as /dev/video%d (%d,%d)\n",
+ jpeg->dec_vdev->num, VIDEO_MAJOR,
+ jpeg->dec_vdev->minor);
+ else
+ v4l2_info(&jpeg->v4l2_dev,
+ "decoder device registered as /dev/video%d (%d,%d)\n",
+ jpeg->dec_vdev->num, VIDEO_MAJOR,
+ jpeg->dec_vdev->minor);
+
+ platform_set_drvdata(pdev, jpeg);
+
+ return 0;
+
+err_vdev_register:
+ video_device_release(jpeg->dec_vdev);
+
+err_vdev_alloc:
+ v4l2_m2m_release(jpeg->m2m_dev);
+
+err_m2m:
+ v4l2_device_unregister(&jpeg->v4l2_dev);
+
+err_register:
+err_irq:
+ return ret;
+}
+
+static int mxc_jpeg_remove(struct platform_device *pdev)
+{
+ unsigned int slot;
+ struct mxc_jpeg_dev *jpeg = platform_get_drvdata(pdev);
+
+ for (slot = 0; slot < MXC_MAX_SLOTS; slot++)
+ mxc_jpeg_free_slot_data(jpeg, slot);
+
+ video_unregister_device(jpeg->dec_vdev);
+ video_device_release(jpeg->dec_vdev);
+ v4l2_m2m_release(jpeg->m2m_dev);
+ v4l2_device_unregister(&jpeg->v4l2_dev);
+ mxc_jpeg_detach_pm_domains(jpeg);
+
+ return 0;
+}
+
+MODULE_DEVICE_TABLE(of, mxc_jpeg_match);
+
+static struct platform_driver mxc_jpeg_driver = {
+ .probe = mxc_jpeg_probe,
+ .remove = mxc_jpeg_remove,
+ .driver = {
+ .name = "mxc-jpeg",
+ .of_match_table = mxc_jpeg_match,
+ },
+};
+module_platform_driver(mxc_jpeg_driver);
+
+MODULE_AUTHOR("Zhengyu Shen <zhengyu.shen_1@nxp.com>");
+MODULE_AUTHOR("Mirela Rabulea <mirela.rabulea@nxp.com>");
+MODULE_DESCRIPTION("V4L2 driver for i.MX8 QXP/QM JPEG encoder/decoder");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.h b/drivers/media/platform/imx-jpeg/mxc-jpeg.h
new file mode 100644
index 000000000000..ef1670dafeb4
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.h
@@ -0,0 +1,184 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
+ *
+ * Copyright 2018-2019 NXP
+ */
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fh.h>
+
+#ifndef _MXC_JPEG_CORE_H
+#define _MXC_JPEG_CORE_H
+
+#define MXC_JPEG_NAME "mxc-jpeg"
+#define MXC_JPEG_FMT_TYPE_ENC 0
+#define MXC_JPEG_FMT_TYPE_RAW 1
+#define MXC_JPEG_DEFAULT_WIDTH 1280
+#define MXC_JPEG_DEFAULT_HEIGHT 720
+#define MXC_JPEG_DEFAULT_PFMT V4L2_PIX_FMT_RGB24
+#define MXC_JPEG_MIN_WIDTH 64
+#define MXC_JPEG_MIN_HEIGHT 64
+#define MXC_JPEG_MAX_WIDTH 0x2000
+#define MXC_JPEG_MAX_HEIGHT 0x2000
+#define MXC_JPEG_MAX_CFG_STREAM 0x1000
+#define MXC_JPEG_H_ALIGN 3
+#define MXC_JPEG_W_ALIGN 3
+#define MXC_JPEG_MAX_SIZEIMAGE 0xFFFFFC00
+#define MXC_JPEG_MAX_PLANES 2
+
+enum mxc_jpeg_enc_state {
+ MXC_JPEG_ENCODING = 0, /* jpeg encode phase */
+ MXC_JPEG_ENC_CONF = 1, /* jpeg encoder config phase */
+};
+
+enum mxc_jpeg_mode {
+ MXC_JPEG_DECODE = 0, /* jpeg decode mode */
+ MXC_JPEG_ENCODE = 1, /* jpeg encode mode */
+};
+
+/**
+ * struct jpeg_fmt - driver's internal color format data
+ * @name: format description
+ * @fourcc: fourcc code, 0 if not applicable
+ * @depth: number of bits per pixel
+ * @colplanes: number of color planes (1 for packed formats)
+ * @h_align: horizontal alignment order (align to 2^h_align)
+ * @v_align: vertical alignment order (align to 2^v_align)
+ * @flags: flags describing format applicability
+ */
+struct mxc_jpeg_fmt {
+ char *name;
+ u32 fourcc;
+ int depth;
+ int colplanes;
+ int h_align;
+ int v_align;
+ u32 flags;
+};
+
+struct mxc_jpeg_desc {
+ u32 next_descpt_ptr;
+ u32 buf_base0;
+ u32 buf_base1;
+ u32 line_pitch;
+ u32 stm_bufbase;
+ u32 stm_bufsize;
+ u32 imgsize;
+ u32 stm_ctrl;
+} __packed;
+
+struct mxc_jpeg_q_data {
+ struct mxc_jpeg_fmt *fmt;
+ u32 sizeimage[MXC_JPEG_MAX_PLANES];
+ u32 bytesperline[MXC_JPEG_MAX_PLANES];
+ int w;
+ int w_adjusted;
+ int h;
+ int h_adjusted;
+ unsigned int sequence;
+};
+
+struct mxc_jpeg_ctx {
+ struct mxc_jpeg_dev *mxc_jpeg;
+ struct mxc_jpeg_q_data out_q;
+ struct mxc_jpeg_q_data cap_q;
+ struct v4l2_fh fh;
+ enum mxc_jpeg_enc_state enc_state;
+ unsigned int stopping;
+ unsigned int slot;
+};
+
+struct mxc_jpeg_slot_data {
+ bool used;
+ struct mxc_jpeg_desc *desc; // enc/dec descriptor
+ struct mxc_jpeg_desc *cfg_desc; // configuration descriptor
+ void *cfg_stream_vaddr; // configuration bitstream virtual address
+ unsigned int cfg_stream_size;
+ dma_addr_t desc_handle;
+ dma_addr_t cfg_desc_handle; // configuration descriptor dma address
+ dma_addr_t cfg_stream_handle; // configuration bitstream dma address
+};
+
+struct mxc_jpeg_dev {
+ spinlock_t hw_lock; /* hardware access lock */
+ unsigned int mode;
+ struct mutex lock; /* v4l2 ioctls serialization */
+ struct platform_device *pdev;
+ struct device *dev;
+ void __iomem *base_reg;
+ struct v4l2_device v4l2_dev;
+ struct v4l2_m2m_dev *m2m_dev;
+ struct video_device *dec_vdev;
+ struct mxc_jpeg_slot_data slot_data[MXC_MAX_SLOTS];
+ int num_domains;
+ struct device **pd_dev;
+ struct device_link **pd_link;
+};
+
+/* JPEG marker identifiers */
+#define SOF0 0xC0
+#define SOF1 0xC1
+#define SOF2 0xC2
+#define SOS 0xDA
+#define DHT 0xC4
+#define APP14 0xEE
+
+/**
+ * struct mxc_jpeg_sof_comp - JPEG Start Of Frame component fields
+ * @id: component id
+ * @v: vertical sampling
+ * @h: horizontal sampling
+ * @quantization_table_no: id of quantization table
+ */
+struct mxc_jpeg_sof_comp {
+ u8 id;
+ u8 v :4;
+ u8 h :4;
+ u8 quantization_table_no;
+} __packed;
+
+#define MXC_JPEG_MAX_COMPONENTS 4
+/**
+ * struct mxc_jpeg_sof - JPEG Start Of Frame marker fields
+ * @length: Start of Frame length
+ * @precision: precision (bits per pixel per color component)
+ * @height: image height
+ * @width: image width
+ * @components_no: number of color components
+ * @comp: component fields for each color component
+ */
+struct mxc_jpeg_sof {
+ u16 length;
+ u8 precision;
+ u16 height, width;
+ u8 components_no;
+ struct mxc_jpeg_sof_comp comp[MXC_JPEG_MAX_COMPONENTS];
+} __packed;
+
+/**
+ * struct mxc_jpeg_sof - JPEG Start Of Scan component fields
+ * @id: component id
+ * @huffman_table_no: id of the Huffman table
+ */
+struct mxc_jpeg_sos_comp {
+ u8 id; /*component id*/
+ u8 huffman_table_no;
+} __packed;
+
+/**
+ * struct mxc_jpeg_sof - JPEG Start Of Scan marker fields
+ * @length: Start of Frame length
+ * @components_no: number of color components
+ * @comp: SOS component fields for each color component
+ * @ignorable_bytes: ignorable bytes
+ */
+struct mxc_jpeg_sos {
+ u16 length;
+ u8 components_no;
+ struct mxc_jpeg_sos_comp comp[MXC_JPEG_MAX_COMPONENTS];
+ u8 ignorable_bytes[3];
+} __packed;
+
+#endif
--
2.17.1
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v7 4/9] arm64: dts: imx8qxp: Add jpeg encoder/decoder nodes
2021-01-11 19:28 [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
` (2 preceding siblings ...)
2021-01-11 19:28 ` [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
@ 2021-01-11 19:28 ` Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 5/9] Add maintainer for IMX jpeg v4l2 driver Mirela Rabulea
` (4 subsequent siblings)
8 siblings, 0 replies; 20+ messages in thread
From: Mirela Rabulea @ 2021-01-11 19:28 UTC (permalink / raw)
To: mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
From: Mirela Rabulea <mirela.rabulea@nxp.com>
Add jpeg decoder/encoder nodes, for now on imx8qxp only.
The same should work on imx8qm, but it was not tested.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
---
arch/arm64/boot/dts/freescale/imx8qxp.dtsi | 35 ++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
index e46faac1fe71..ee822560af54 100644
--- a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
@@ -629,4 +629,39 @@
};
};
};
+
+ img_subsys: bus@58000000 {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x58000000 0x0 0x58000000 0x1000000>;
+
+ jpegdec: jpegdec@58400000 {
+ compatible = "nxp,imx8qxp-jpgdec";
+ reg = <0x58400000 0x00050000 >;
+ interrupts = <GIC_SPI 309 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 310 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 311 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 312 IRQ_TYPE_LEVEL_HIGH>;
+ power-domains = <&pd IMX_SC_R_MJPEG_DEC_MP>,
+ <&pd IMX_SC_R_MJPEG_DEC_S0>,
+ <&pd IMX_SC_R_MJPEG_DEC_S1>,
+ <&pd IMX_SC_R_MJPEG_DEC_S2>,
+ <&pd IMX_SC_R_MJPEG_DEC_S3>;
+ };
+
+ jpegenc: jpegenc@58450000 {
+ compatible = "nxp,imx8qxp-jpgenc";
+ reg = <0x58450000 0x00050000 >;
+ interrupts = <GIC_SPI 305 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 306 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 307 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 308 IRQ_TYPE_LEVEL_HIGH>;
+ power-domains = <&pd IMX_SC_R_MJPEG_ENC_MP>,
+ <&pd IMX_SC_R_MJPEG_ENC_S0>,
+ <&pd IMX_SC_R_MJPEG_ENC_S1>,
+ <&pd IMX_SC_R_MJPEG_ENC_S2>,
+ <&pd IMX_SC_R_MJPEG_ENC_S3>;
+ };
+ };
};
--
2.17.1
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v7 5/9] Add maintainer for IMX jpeg v4l2 driver
2021-01-11 19:28 [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
` (3 preceding siblings ...)
2021-01-11 19:28 ` [PATCH v7 4/9] arm64: dts: imx8qxp: Add jpeg encoder/decoder nodes Mirela Rabulea
@ 2021-01-11 19:28 ` Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 6/9] media: Add parsing for APP14 data segment in jpeg helpers Mirela Rabulea
` (3 subsequent siblings)
8 siblings, 0 replies; 20+ messages in thread
From: Mirela Rabulea @ 2021-01-11 19:28 UTC (permalink / raw)
To: mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
From: Mirela Rabulea <mirela.rabulea@nxp.com>
The driver is located in drivers/media/platform/imx-jpeg,
and it applies to the JPEG decoder from i.MX QXP and QM.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
---
MAINTAINERS | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index f4c94fef4bc6..660b95386629 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12841,6 +12841,14 @@ L: linux-nfc@lists.01.org (moderated for non-subscribers)
S: Supported
F: drivers/nfc/nxp-nci
+NXP i.MX 8QXP/8QM JPEG V4L2 DRIVER
+M: Mirela Rabulea <mirela.rabulea@nxp.com>
+R: NXP Linux Team <linux-imx@nxp.com>
+L: linux-media@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/media/imx8-jpeg.yaml
+F: drivers/media/platform/imx-jpeg
+
OBJAGG
M: Jiri Pirko <jiri@nvidia.com>
L: netdev@vger.kernel.org
--
2.17.1
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v7 6/9] media: Add parsing for APP14 data segment in jpeg helpers
2021-01-11 19:28 [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
` (4 preceding siblings ...)
2021-01-11 19:28 ` [PATCH v7 5/9] Add maintainer for IMX jpeg v4l2 driver Mirela Rabulea
@ 2021-01-11 19:28 ` Mirela Rabulea
2021-01-12 14:58 ` Philipp Zabel
2021-01-11 19:28 ` [PATCH v7 7/9] media: Quit parsing stream if doesn't start with SOI Mirela Rabulea
` (2 subsequent siblings)
8 siblings, 1 reply; 20+ messages in thread
From: Mirela Rabulea @ 2021-01-11 19:28 UTC (permalink / raw)
To: mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
From: Mirela Rabulea <mirela.rabulea@nxp.com>
According to Rec. ITU-T T.872 (06/2012) 6.5.3
APP14 segment is for color encoding, it contains a transform flag, which
may have values of 0, 1 and 2 and are interpreted as follows:
0 - CMYK for images that are encoded with four components
- RGB for images that are encoded with three components
1 - An image encoded with three components using YCbCr colour encoding.
2 - An image encoded with four components using YCCK colour encoding.
This is used in imx-jpeg decoder, to distinguish between
YUV444 and RGB24.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
---
Changes in v7:
Check there are 6 bytes available in the stream before checking for "Adobe\0"
Change jpeg_parse_app14_data function to differentiate between the 3 scenarios: app14 missing, or app14 present but with/without parsing errors:
App14 missing => Added V4L2_JPEG_APP14_TF_UNKNOWN to the enum v4l2_jpeg_app14_tf, use it to indicate app14 & TF is missing
App14 present without parsing errors => Return the transform flag value as enum v4l2_jpeg_app14_tf (new paramater of jpeg_parse_app14_data function)
App14 present with parsing errors => Return -EINVAL from jpeg_parse_app14_data, also return from calling function (v4l2_jpeg_parse_header) when this error is met.
drivers/media/v4l2-core/v4l2-jpeg.c | 47 +++++++++++++++++++++++++++--
include/media/v4l2-jpeg.h | 20 ++++++++++++
2 files changed, 65 insertions(+), 2 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-jpeg.c b/drivers/media/v4l2-core/v4l2-jpeg.c
index 8947fd95c6f1..8d5fedb136dd 100644
--- a/drivers/media/v4l2-core/v4l2-jpeg.c
+++ b/drivers/media/v4l2-core/v4l2-jpeg.c
@@ -45,6 +45,7 @@ MODULE_LICENSE("GPL");
#define DHP 0xffde /* hierarchical progression */
#define EXP 0xffdf /* expand reference */
#define APP0 0xffe0 /* application data */
+#define APP14 0xffee /* application data for colour encoding */
#define APP15 0xffef
#define JPG0 0xfff0 /* extensions */
#define JPG13 0xfffd
@@ -444,8 +445,44 @@ static int jpeg_skip_segment(struct jpeg_stream *stream)
return jpeg_skip(stream, len - 2);
}
+/* Rec. ITU-T T.872 (06/2012) 6.5.3 */
+static int jpeg_parse_app14_data(struct jpeg_stream *stream,
+ enum v4l2_jpeg_app14_tf *tf)
+{
+ int ret;
+ int lp;
+ int skip;
+
+ lp = jpeg_get_word_be(stream);
+ if (lp < 0)
+ return lp;
+
+ /* Check for "Adobe\0" in Ap1..6 */
+ if (stream->curr + 6 > stream->end ||
+ strncmp(stream->curr, "Adobe\0", 6))
+ return -EINVAL;
+
+ /* get to Ap12 */
+ ret = jpeg_skip(stream, 11);
+ if (ret < 0)
+ return ret;
+
+ ret = jpeg_get_byte(stream);
+ if (ret < 0)
+ return ret;
+
+ *tf = ret;
+
+ skip = lp - 2 - 11;
+ ret = jpeg_skip(stream, skip);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
/**
- * jpeg_parse_header - locate marker segments and optionally parse headers
+ * v4l2_jpeg_parse_header - locate marker segments and optionally parse headers
* @buf: address of the JPEG buffer, should start with a SOI marker
* @len: length of the JPEG buffer
* @out: returns marker segment positions and optionally parsed headers
@@ -476,6 +513,9 @@ int v4l2_jpeg_parse_header(void *buf, size_t len, struct v4l2_jpeg_header *out)
if (marker != SOI)
return -EINVAL;
+ /* init value to signal if this marker is not present */
+ out->app14_tf = V4L2_JPEG_APP14_TF_UNKNOWN;
+
/* loop through marker segments */
while ((marker = jpeg_next_marker(&stream)) >= 0) {
switch (marker) {
@@ -519,7 +559,10 @@ int v4l2_jpeg_parse_header(void *buf, size_t len, struct v4l2_jpeg_header *out)
ret = jpeg_parse_restart_interval(&stream,
&out->restart_interval);
break;
-
+ case APP14:
+ ret = jpeg_parse_app14_data(&stream,
+ &out->app14_tf);
+ break;
case SOS:
ret = jpeg_reference_segment(&stream, &out->sos);
if (ret < 0)
diff --git a/include/media/v4l2-jpeg.h b/include/media/v4l2-jpeg.h
index ddba2a56c321..bae5a68bab6a 100644
--- a/include/media/v4l2-jpeg.h
+++ b/include/media/v4l2-jpeg.h
@@ -87,6 +87,24 @@ struct v4l2_jpeg_scan_header {
/* Ss, Se, Ah, and Al are not used by any driver */
};
+/**
+ * enum v4l2_jpeg_app14_tf - APP14 transform flag
+ * According to Rec. ITU-T T.872 (06/2012) 6.5.3
+ * APP14 segment is for color encoding, it contains a transform flag,
+ * which may have values of 0, 1 and 2 and are interpreted as follows:
+ * @V4L2_JPEG_APP14_TF_CMYK_RGB: CMYK for images encoded with four components
+ * RGB for images encoded with three components
+ * @V4L2_JPEG_APP14_TF_YCBCR: an image encoded with three components using YCbCr
+ * @V4L2_JPEG_APP14_TF_YCCK: an image encoded with four components using YCCK
+ * @V4L2_JPEG_APP14_TF_UNKNOWN: indicate app14 is not present
+ */
+enum v4l2_jpeg_app14_tf {
+ V4L2_JPEG_APP14_TF_CMYK_RGB = 0,
+ V4L2_JPEG_APP14_TF_YCBCR = 1,
+ V4L2_JPEG_APP14_TF_YCCK = 2,
+ V4L2_JPEG_APP14_TF_UNKNOWN = -1,
+};
+
/**
* struct v4l2_jpeg_header - parsed JPEG header
* @sof: pointer to frame header and size
@@ -100,6 +118,7 @@ struct v4l2_jpeg_scan_header {
* order, optional
* @restart_interval: number of MCU per restart interval, Ri
* @ecs_offset: buffer offset in bytes to the entropy coded segment
+ * @app14_tf: transform flag from app14 data
*
* When this structure is passed to v4l2_jpeg_parse_header, the optional scan,
* quantization_tables, and huffman_tables pointers must be initialized to NULL
@@ -119,6 +138,7 @@ struct v4l2_jpeg_header {
struct v4l2_jpeg_reference *huffman_tables;
u16 restart_interval;
size_t ecs_offset;
+ enum v4l2_jpeg_app14_tf app14_tf;
};
int v4l2_jpeg_parse_header(void *buf, size_t len, struct v4l2_jpeg_header *out);
--
2.17.1
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v7 7/9] media: Quit parsing stream if doesn't start with SOI
2021-01-11 19:28 [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
` (5 preceding siblings ...)
2021-01-11 19:28 ` [PATCH v7 6/9] media: Add parsing for APP14 data segment in jpeg helpers Mirela Rabulea
@ 2021-01-11 19:28 ` Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 8/9] media: Avoid parsing quantization and huffman tables Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 9/9] media: imx-jpeg: Use v4l2 jpeg helpers in mxc-jpeg Mirela Rabulea
8 siblings, 0 replies; 20+ messages in thread
From: Mirela Rabulea @ 2021-01-11 19:28 UTC (permalink / raw)
To: mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
From: Mirela Rabulea <mirela.rabulea@nxp.com>
In the case we get an invalid stream, such as from v4l2-compliance
streaming test, jpeg_next_marker will end up parsing the entire
stream. The standard describes the high level syntax of a jpeg
as starting with SOI, ending with EOI, so return error if the very
first 2 bytes are not SOI.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/media/v4l2-core/v4l2-jpeg.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-jpeg.c b/drivers/media/v4l2-core/v4l2-jpeg.c
index 8d5fedb136dd..42aaabc71b7a 100644
--- a/drivers/media/v4l2-core/v4l2-jpeg.c
+++ b/drivers/media/v4l2-core/v4l2-jpeg.c
@@ -506,11 +506,8 @@ int v4l2_jpeg_parse_header(void *buf, size_t len, struct v4l2_jpeg_header *out)
out->num_dht = 0;
out->num_dqt = 0;
- /* the first marker must be SOI */
- marker = jpeg_next_marker(&stream);
- if (marker < 0)
- return marker;
- if (marker != SOI)
+ /* the first bytes must be SOI, B.2.1 High-level syntax */
+ if (jpeg_get_word_be(&stream) != SOI)
return -EINVAL;
/* init value to signal if this marker is not present */
--
2.17.1
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v7 8/9] media: Avoid parsing quantization and huffman tables
2021-01-11 19:28 [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
` (6 preceding siblings ...)
2021-01-11 19:28 ` [PATCH v7 7/9] media: Quit parsing stream if doesn't start with SOI Mirela Rabulea
@ 2021-01-11 19:28 ` Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 9/9] media: imx-jpeg: Use v4l2 jpeg helpers in mxc-jpeg Mirela Rabulea
8 siblings, 0 replies; 20+ messages in thread
From: Mirela Rabulea @ 2021-01-11 19:28 UTC (permalink / raw)
To: mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
From: Mirela Rabulea <mirela.rabulea@nxp.com>
These are optional in struct v4l2_jpeg_header, so skip DHT/DQT segment
parsing if huffman_tables/quantization_tables were not requested by user,
to save time.
However, do count them (num_dht/num_dqt).
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
---
Changes in v7:
Added Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
drivers/media/v4l2-core/v4l2-jpeg.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-jpeg.c b/drivers/media/v4l2-core/v4l2-jpeg.c
index 42aaabc71b7a..4b008d630252 100644
--- a/drivers/media/v4l2-core/v4l2-jpeg.c
+++ b/drivers/media/v4l2-core/v4l2-jpeg.c
@@ -540,6 +540,10 @@ int v4l2_jpeg_parse_header(void *buf, size_t len, struct v4l2_jpeg_header *out)
&out->dht[out->num_dht++ % 4]);
if (ret < 0)
return ret;
+ if (!out->huffman_tables) {
+ ret = jpeg_skip_segment(&stream);
+ break;
+ }
ret = jpeg_parse_huffman_tables(&stream,
out->huffman_tables);
break;
@@ -548,6 +552,10 @@ int v4l2_jpeg_parse_header(void *buf, size_t len, struct v4l2_jpeg_header *out)
&out->dqt[out->num_dqt++ % 4]);
if (ret < 0)
return ret;
+ if (!out->quantization_tables) {
+ ret = jpeg_skip_segment(&stream);
+ break;
+ }
ret = jpeg_parse_quantization_tables(&stream,
out->frame.precision,
out->quantization_tables);
--
2.17.1
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v7 9/9] media: imx-jpeg: Use v4l2 jpeg helpers in mxc-jpeg
2021-01-11 19:28 [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
` (7 preceding siblings ...)
2021-01-11 19:28 ` [PATCH v7 8/9] media: Avoid parsing quantization and huffman tables Mirela Rabulea
@ 2021-01-11 19:28 ` Mirela Rabulea
2021-01-12 15:00 ` Philipp Zabel
8 siblings, 1 reply; 20+ messages in thread
From: Mirela Rabulea @ 2021-01-11 19:28 UTC (permalink / raw)
To: mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
From: Mirela Rabulea <mirela.rabulea@nxp.com>
Use v4l2_jpeg_parse_header in mxc_jpeg_parse, remove the old
parsing way, which was duplicated in other jpeg drivers.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
---
drivers/media/platform/imx-jpeg/Kconfig | 1 +
drivers/media/platform/imx-jpeg/mxc-jpeg.c | 267 ++++++---------------
drivers/media/platform/imx-jpeg/mxc-jpeg.h | 26 +-
3 files changed, 80 insertions(+), 214 deletions(-)
diff --git a/drivers/media/platform/imx-jpeg/Kconfig b/drivers/media/platform/imx-jpeg/Kconfig
index 7cc89e5eff90..d875f7c88cda 100644
--- a/drivers/media/platform/imx-jpeg/Kconfig
+++ b/drivers/media/platform/imx-jpeg/Kconfig
@@ -4,6 +4,7 @@ config VIDEO_IMX8_JPEG
depends on VIDEO_DEV && VIDEO_V4L2
select VIDEOBUF2_DMA_CONTIG
select V4L2_MEM2MEM_DEV
+ select V4L2_JPEG_HELPER
default m
help
This is a video4linux2 driver for the i.MX8 QXP/QM integrated
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
index 9f1052779c58..b19fc98c1ce3 100644
--- a/drivers/media/platform/imx-jpeg/mxc-jpeg.c
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
@@ -52,6 +52,7 @@
#include <linux/pm_domain.h>
#include <linux/string.h>
+#include <media/v4l2-jpeg.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-common.h>
@@ -65,12 +66,16 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
{
.name = "JPEG",
.fourcc = V4L2_PIX_FMT_JPEG,
+ .subsampling = -1,
+ .nc = -1,
.colplanes = 1,
.flags = MXC_JPEG_FMT_TYPE_ENC,
},
{
.name = "RGB", /*RGBRGB packed format*/
.fourcc = V4L2_PIX_FMT_RGB24,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
+ .nc = 3,
.depth = 24,
.colplanes = 1,
.h_align = 3,
@@ -80,6 +85,8 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
{
.name = "ARGB", /* ARGBARGB packed format */
.fourcc = V4L2_PIX_FMT_ARGB32,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
+ .nc = 4,
.depth = 32,
.colplanes = 1,
.h_align = 3,
@@ -89,6 +96,8 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
{
.name = "YUV420", /* 1st plane = Y, 2nd plane = UV */
.fourcc = V4L2_PIX_FMT_NV12,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420,
+ .nc = 3,
.depth = 12, /* 6 bytes (4Y + UV) for 4 pixels */
.colplanes = 2, /* 1 plane Y, 1 plane UV interleaved */
.h_align = 4,
@@ -98,6 +107,8 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
{
.name = "YUV422", /* YUYV */
.fourcc = V4L2_PIX_FMT_YUYV,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422,
+ .nc = 3,
.depth = 16,
.colplanes = 1,
.h_align = 4,
@@ -107,6 +118,8 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
{
.name = "YUV444", /* YUVYUV */
.fourcc = V4L2_PIX_FMT_YUV24,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
+ .nc = 3,
.depth = 24,
.colplanes = 1,
.h_align = 3,
@@ -116,6 +129,8 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
{
.name = "Gray", /* Gray (Y8/Y12) or Single Comp */
.fourcc = V4L2_PIX_FMT_GREY,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY,
+ .nc = 1,
.depth = 8,
.colplanes = 1,
.h_align = 3,
@@ -384,33 +399,6 @@ static enum mxc_jpeg_image_format mxc_jpeg_fourcc_to_imgfmt(u32 fourcc)
}
}
-static int mxc_jpeg_imgfmt_to_fourcc(enum mxc_jpeg_image_format imgfmt,
- u32 *fourcc)
-{
- switch (imgfmt) {
- case MXC_JPEG_GRAY:
- *fourcc = V4L2_PIX_FMT_GREY;
- return 0;
- case MXC_JPEG_YUV422:
- *fourcc = V4L2_PIX_FMT_YUYV;
- return 0;
- case MXC_JPEG_YUV420:
- *fourcc = V4L2_PIX_FMT_NV12;
- return 0;
- case MXC_JPEG_YUV444:
- *fourcc = V4L2_PIX_FMT_YUV24;
- return 0;
- case MXC_JPEG_RGB:
- *fourcc = V4L2_PIX_FMT_RGB24;
- return 0;
- case MXC_JPEG_ARGB:
- *fourcc = V4L2_PIX_FMT_ARGB32;
- return 0;
- default:
- return 1;
- }
-}
-
static struct mxc_jpeg_q_data *mxc_jpeg_get_q_data(struct mxc_jpeg_ctx *ctx,
enum v4l2_buf_type type)
{
@@ -1130,45 +1118,6 @@ static void mxc_jpeg_stop_streaming(struct vb2_queue *q)
release_active_buffers(q, VB2_BUF_STATE_ERROR);
}
-struct mxc_jpeg_stream {
- u8 *addr;
- u32 loc;
- u32 end;
-};
-
-static int get_byte(struct mxc_jpeg_stream *stream)
-{
- int ret;
-
- if (stream->loc >= stream->end)
- return -1;
- ret = stream->addr[stream->loc];
- stream->loc++;
- return ret;
-}
-
-static int get_sof(struct device *dev,
- struct mxc_jpeg_stream *stream,
- struct mxc_jpeg_sof *sof)
-{
- int i;
-
- if (stream->loc + sizeof(struct mxc_jpeg_sof) >= stream->end)
- return -1;
- memcpy(sof, &stream->addr[stream->loc], sizeof(struct mxc_jpeg_sof));
- _bswap16(&sof->length);
- _bswap16(&sof->height);
- _bswap16(&sof->width);
- dev_dbg(dev, "JPEG SOF: precision=%d\n", sof->precision);
- dev_dbg(dev, "JPEG SOF: height=%d, width=%d\n",
- sof->height, sof->width);
- for (i = 0; i < sof->components_no; i++) {
- dev_dbg(dev, "JPEG SOF: comp_id=%d, H=0x%x, V=0x%x\n",
- sof->comp[i].id, sof->comp[i].v, sof->comp[i].h);
- }
- return 0;
-}
-
static int mxc_jpeg_valid_comp_id(struct device *dev,
struct mxc_jpeg_sof *sof,
struct mxc_jpeg_sos *sos)
@@ -1198,45 +1147,18 @@ static int mxc_jpeg_valid_comp_id(struct device *dev,
return valid;
}
-static enum mxc_jpeg_image_format
-mxc_jpeg_get_image_format(struct device *dev, const struct mxc_jpeg_sof *sof)
+static u32 mxc_jpeg_get_image_format(struct device *dev,
+ const struct v4l2_jpeg_header header)
{
- if (sof->components_no == 1) {
- dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_GRAY\n");
- return MXC_JPEG_GRAY;
- }
- if (sof->components_no == 3) {
- if (sof->comp[0].h == 2 && sof->comp[0].v == 2 &&
- sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
- sof->comp[2].h == 1 && sof->comp[2].v == 1){
- dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV420\n");
- return MXC_JPEG_YUV420;
- }
- if (sof->comp[0].h == 2 && sof->comp[0].v == 1 &&
- sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
- sof->comp[2].h == 1 && sof->comp[2].v == 1){
- dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV422\n");
- return MXC_JPEG_YUV422;
- }
- if (sof->comp[0].h == 1 && sof->comp[0].v == 1 &&
- sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
- sof->comp[2].h == 1 && sof->comp[2].v == 1){
- dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV444\n");
- return MXC_JPEG_YUV444;
- }
- }
- if (sof->components_no == 4) {
- if (sof->comp[0].h == 1 && sof->comp[0].v == 1 &&
- sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
- sof->comp[2].h == 1 && sof->comp[2].v == 1 &&
- sof->comp[3].h == 1 && sof->comp[3].v == 1){
- /* this is not tested */
- dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_ARGB\n");
- return MXC_JPEG_ARGB;
- }
- }
+ int i;
+
+ for (i = 0; i < MXC_JPEG_NUM_FORMATS; i++)
+ if (mxc_formats[i].subsampling == header.frame.subsampling &&
+ mxc_formats[i].nc == header.frame.num_components)
+ return mxc_formats[i].fourcc;
+
dev_err(dev, "Could not identify image format\n");
- return MXC_JPEG_INVALID;
+ return 0;
}
static void mxc_jpeg_bytesperline(struct mxc_jpeg_q_data *q,
@@ -1290,122 +1212,69 @@ static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
struct device *dev = ctx->mxc_jpeg->dev;
struct mxc_jpeg_q_data *q_data_out, *q_data_cap;
enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
- struct mxc_jpeg_stream stream;
- bool notfound = true;
- bool app14 = false;
bool src_chg = false;
- u8 app14_transform = 0;
- struct mxc_jpeg_sof sof, *psof = NULL;
- struct mxc_jpeg_sos *psos = NULL;
- int byte;
- u8 *next = NULL;
- enum mxc_jpeg_image_format img_fmt;
u32 fourcc;
+ struct v4l2_jpeg_header header;
+ struct mxc_jpeg_sof *psof = NULL;
+ struct mxc_jpeg_sos *psos = NULL;
+ int ret;
- memset(&sof, 0, sizeof(struct mxc_jpeg_sof));
- stream.addr = src_addr;
- stream.end = size;
- stream.loc = 0;
- *dht_needed = true;
+ memset(&header, 0, sizeof(header));
+ ret = v4l2_jpeg_parse_header((void *)src_addr, size, &header);
+ if (ret < 0) {
+ dev_err(dev, "Error parsing JPEG stream markers\n");
+ return ret;
+ }
- /* check stream starts with SOI */
- byte = get_byte(&stream);
- if (byte == -1 || byte != 0xFF)
- return -EINVAL;
- byte = get_byte(&stream);
- if (byte == -1 || byte != 0xD8)
- return -EINVAL;
+ /* if DHT marker present, no need to inject default one */
+ *dht_needed = (header.num_dht == 0);
- while (notfound) {
- byte = get_byte(&stream);
- if (byte == -1)
- return -EINVAL;
- if (byte != 0xff)
- continue;
- do {
- byte = get_byte(&stream);
- } while (byte == 0xff);
- if (byte == -1)
- return false;
- if (byte == 0)
- continue;
- switch (byte) {
- case DHT:
- /* DHT marker present, no need to inject default one */
- *dht_needed = false;
- break;
- case SOF2: /* Progressive DCF frame definition */
- dev_err(dev,
- "Progressive JPEG not supported by hardware");
- return -EINVAL;
- case SOF1: /* Extended sequential DCF frame definition */
- case SOF0: /* Baseline sequential DCF frame definition */
- if (get_sof(dev, &stream, &sof) == -1)
- break;
- next = stream.addr + stream.loc;
- psof = (struct mxc_jpeg_sof *)next;
- break;
- case SOS:
- next = stream.addr + stream.loc;
- psos = (struct mxc_jpeg_sos *)next;
- notfound = false;
- break;
- case APP14:
- app14 = true;
- /*
- * Application Data Syntax is:
- * 2 bytes(APPn:0xFF,0xEE), 2 bytes(Lp), Ap1...ApLp-2
- * The transform flag is in Ap12
- * stream.loc is now on APPn-0xEE byte
- */
- app14_transform = *(stream.addr + stream.loc + 12 + 1);
- break;
- default:
- notfound = true;
- }
- }
q_data_out = mxc_jpeg_get_q_data(ctx,
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
if (q_data_out->w == 0 && q_data_out->h == 0) {
dev_warn(dev, "Invalid user resolution 0x0");
dev_warn(dev, "Keeping resolution from JPEG: %dx%d",
- sof.width, sof.height);
- q_data_out->w = sof.width;
- q_data_out->h = sof.height;
- } else if (sof.width != q_data_out->w || sof.height != q_data_out->h) {
+ header.frame.width, header.frame.height);
+ q_data_out->w = header.frame.width;
+ q_data_out->h = header.frame.height;
+ } else if (header.frame.width != q_data_out->w ||
+ header.frame.height != q_data_out->h) {
dev_err(dev,
"Resolution mismatch: %dx%d (JPEG) versus %dx%d(user)",
- sof.width, sof.height, q_data_out->w, q_data_out->h);
+ header.frame.width, header.frame.height,
+ q_data_out->w, q_data_out->h);
return -EINVAL;
}
- if (sof.width % 8 != 0 || sof.height % 8 != 0) {
+ if (header.frame.width % 8 != 0 || header.frame.height % 8 != 0) {
dev_err(dev, "JPEG width or height not multiple of 8: %dx%d\n",
- sof.width, sof.height);
+ header.frame.width, header.frame.height);
return -EINVAL;
}
- if (sof.width > MXC_JPEG_MAX_WIDTH ||
- sof.height > MXC_JPEG_MAX_HEIGHT) {
+ if (header.frame.width > MXC_JPEG_MAX_WIDTH ||
+ header.frame.height > MXC_JPEG_MAX_HEIGHT) {
dev_err(dev, "JPEG width or height should be <= 8192: %dx%d\n",
- sof.width, sof.height);
+ header.frame.width, header.frame.height);
return -EINVAL;
}
- if (sof.width < MXC_JPEG_MIN_WIDTH ||
- sof.height < MXC_JPEG_MIN_HEIGHT) {
+ if (header.frame.width < MXC_JPEG_MIN_WIDTH ||
+ header.frame.height < MXC_JPEG_MIN_HEIGHT) {
dev_err(dev, "JPEG width or height should be > 64: %dx%d\n",
- sof.width, sof.height);
+ header.frame.width, header.frame.height);
return -EINVAL;
}
- if (sof.components_no > MXC_JPEG_MAX_COMPONENTS) {
+ if (header.frame.num_components > V4L2_JPEG_MAX_COMPONENTS) {
dev_err(dev, "JPEG number of components should be <=%d",
- MXC_JPEG_MAX_COMPONENTS);
+ V4L2_JPEG_MAX_COMPONENTS);
return -EINVAL;
}
/* check and, if necessary, patch component IDs*/
+ psof = (struct mxc_jpeg_sof *)header.sof.start;
+ psos = (struct mxc_jpeg_sos *)header.sos.start;
if (!mxc_jpeg_valid_comp_id(dev, psof, psos))
dev_warn(dev, "JPEG component ids should be 0-3 or 1-4");
- img_fmt = mxc_jpeg_get_image_format(dev, &sof);
- if (img_fmt == MXC_JPEG_INVALID)
+ fourcc = mxc_jpeg_get_image_format(dev, header);
+ if (fourcc == 0)
return -EINVAL;
/*
@@ -1413,12 +1282,11 @@ static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
* encoded with 3 components have RGB colorspace, see Recommendation
* ITU-T T.872 chapter 6.5.3 APP14 marker segment for colour encoding
*/
- if (img_fmt == MXC_JPEG_YUV444 && app14 && app14_transform == 0)
- img_fmt = MXC_JPEG_RGB;
-
- if (mxc_jpeg_imgfmt_to_fourcc(img_fmt, &fourcc)) {
- dev_err(dev, "Fourcc not found for %d", img_fmt);
- return -EINVAL;
+ if (fourcc == V4L2_PIX_FMT_YUV24 || fourcc == V4L2_PIX_FMT_RGB24) {
+ if (header.app14_tf == V4L2_JPEG_APP14_TF_CMYK_RGB)
+ fourcc = V4L2_PIX_FMT_RGB24;
+ else
+ fourcc = V4L2_PIX_FMT_YUV24;
}
/*
@@ -1426,10 +1294,11 @@ static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
* detected from the jpeg output stream
*/
q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
- if (q_data_cap->w != sof.width || q_data_cap->h != sof.height)
+ if (q_data_cap->w != header.frame.width ||
+ q_data_cap->h != header.frame.height)
src_chg = true;
- q_data_cap->w = sof.width;
- q_data_cap->h = sof.height;
+ q_data_cap->w = header.frame.width;
+ q_data_cap->h = header.frame.height;
q_data_cap->fmt = mxc_jpeg_find_format(ctx, fourcc);
q_data_cap->w_adjusted = q_data_cap->w;
q_data_cap->h_adjusted = q_data_cap->h;
@@ -1455,7 +1324,7 @@ static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
(fourcc >> 24) & 0xff);
/* setup bytesperline/sizeimage for capture queue */
- mxc_jpeg_bytesperline(q_data_cap, sof.precision);
+ mxc_jpeg_bytesperline(q_data_cap, header.frame.precision);
mxc_jpeg_sizeimage(q_data_cap);
/*
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.h b/drivers/media/platform/imx-jpeg/mxc-jpeg.h
index ef1670dafeb4..313b09f831a4 100644
--- a/drivers/media/platform/imx-jpeg/mxc-jpeg.h
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.h
@@ -42,6 +42,8 @@ enum mxc_jpeg_mode {
* struct jpeg_fmt - driver's internal color format data
* @name: format description
* @fourcc: fourcc code, 0 if not applicable
+ * @subsampling subsampling of jpeg components
+ * @nc: number of color components
* @depth: number of bits per pixel
* @colplanes: number of color planes (1 for packed formats)
* @h_align: horizontal alignment order (align to 2^h_align)
@@ -49,13 +51,15 @@ enum mxc_jpeg_mode {
* @flags: flags describing format applicability
*/
struct mxc_jpeg_fmt {
- char *name;
- u32 fourcc;
- int depth;
- int colplanes;
- int h_align;
- int v_align;
- u32 flags;
+ char *name;
+ u32 fourcc;
+ enum v4l2_jpeg_chroma_subsampling subsampling;
+ int nc;
+ int depth;
+ int colplanes;
+ int h_align;
+ int v_align;
+ u32 flags;
};
struct mxc_jpeg_desc {
@@ -117,14 +121,6 @@ struct mxc_jpeg_dev {
struct device_link **pd_link;
};
-/* JPEG marker identifiers */
-#define SOF0 0xC0
-#define SOF1 0xC1
-#define SOF2 0xC2
-#define SOS 0xDA
-#define DHT 0xC4
-#define APP14 0xEE
-
/**
* struct mxc_jpeg_sof_comp - JPEG Start Of Frame component fields
* @id: component id
--
2.17.1
^ permalink raw reply related [flat|nested] 20+ messages in thread
* Re: [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
2021-01-11 19:28 ` [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
@ 2021-01-12 0:36 ` kernel test robot
2021-01-19 10:31 ` Hans Verkuil
` (2 subsequent siblings)
3 siblings, 0 replies; 20+ messages in thread
From: kernel test robot @ 2021-01-12 0:36 UTC (permalink / raw)
To: Mirela Rabulea, mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: kbuild-all, clang-built-linux, paul.kocialkowski, linux-media,
linux-kernel, linux-imx, s.hauer
[-- Attachment #1: Type: text/plain, Size: 5769 bytes --]
Hi Mirela,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on shawnguo/for-next linus/master v5.11-rc3 next-20210111]
[cannot apply to robh/for-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Mirela-Rabulea/Add-V4L2-driver-for-i-MX8-JPEG-Encoder-Decoder/20210112-033507
base: git://linuxtv.org/media_tree.git master
config: arm-randconfig-r033-20210111 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 7be3285248bf54d0784a76174cf44cf7c1e780a5)
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 arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# https://github.com/0day-ci/linux/commit/ba3dd916aaab157090febdfc656fc2a8b6379aa6
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Mirela-Rabulea/Add-V4L2-driver-for-i-MX8-JPEG-Encoder-Decoder/20210112-033507
git checkout ba3dd916aaab157090febdfc656fc2a8b6379aa6
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/media/platform/imx-jpeg/mxc-jpeg.c:891:45: warning: format specifies type 'unsigned long long' but the argument has type 'dma_addr_t' (aka 'unsigned int') [-Wformat]
dev_dbg(jpeg->dev, "cfg_desc - 0x%llx:\n", cfg_desc_handle);
~~~~ ^~~~~~~~~~~~~~~
%x
include/linux/dev_printk.h:131:47: note: expanded from macro 'dev_dbg'
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
~~~ ^~~~~~~~~~~
drivers/media/platform/imx-jpeg/mxc-jpeg.c:893:45: warning: format specifies type 'unsigned long long' but the argument has type 'dma_addr_t' (aka 'unsigned int') [-Wformat]
dev_dbg(jpeg->dev, "enc desc - 0x%llx:\n", desc_handle);
~~~~ ^~~~~~~~~~~
%x
include/linux/dev_printk.h:131:47: note: expanded from macro 'dev_dbg'
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
~~~ ^~~~~~~~~~~
2 warnings generated.
vim +891 drivers/media/platform/imx-jpeg/mxc-jpeg.c
840
841 static void mxc_jpeg_config_enc_desc(struct vb2_buffer *out_buf,
842 struct mxc_jpeg_ctx *ctx,
843 struct vb2_buffer *src_buf,
844 struct vb2_buffer *dst_buf)
845 {
846 struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
847 void __iomem *reg = jpeg->base_reg;
848 unsigned int slot = ctx->slot;
849 struct mxc_jpeg_desc *desc = jpeg->slot_data[slot].desc;
850 struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data[slot].cfg_desc;
851 dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
852 dma_addr_t cfg_desc_handle = jpeg->slot_data[slot].cfg_desc_handle;
853 void *cfg_stream_vaddr = jpeg->slot_data[slot].cfg_stream_vaddr;
854 struct mxc_jpeg_q_data *q_data;
855 enum mxc_jpeg_image_format img_fmt;
856 int w, h;
857
858 q_data = mxc_jpeg_get_q_data(ctx, src_buf->vb2_queue->type);
859
860 jpeg->slot_data[slot].cfg_stream_size =
861 mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
862 q_data->fmt->fourcc,
863 q_data->w_adjusted,
864 q_data->h_adjusted);
865
866 /* chain the config descriptor with the encoding descriptor */
867 cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
868
869 cfg_desc->buf_base0 = jpeg->slot_data[slot].cfg_stream_handle;
870 cfg_desc->buf_base1 = 0;
871 cfg_desc->line_pitch = 0;
872 cfg_desc->stm_bufbase = 0; /* no output expected */
873 cfg_desc->stm_bufsize = 0x0;
874 cfg_desc->imgsize = 0;
875 cfg_desc->stm_ctrl = STM_CTRL_CONFIG_MOD(1);
876
877 desc->next_descpt_ptr = 0; /* end of chain */
878
879 /* use adjusted resolution for CAST IP job */
880 w = q_data->w_adjusted;
881 h = q_data->h_adjusted;
882 mxc_jpeg_set_res(desc, w, h);
883 mxc_jpeg_set_line_pitch(desc, w * (q_data->fmt->depth / 8));
884 mxc_jpeg_set_bufsize(desc, desc->line_pitch * h);
885 img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data->fmt->fourcc);
886 if (img_fmt == MXC_JPEG_INVALID)
887 dev_err(jpeg->dev, "No valid image format detected\n");
888 desc->stm_ctrl = STM_CTRL_CONFIG_MOD(0) |
889 STM_CTRL_IMAGE_FORMAT(img_fmt);
890 mxc_jpeg_addrs(desc, src_buf, dst_buf, 0);
> 891 dev_dbg(jpeg->dev, "cfg_desc - 0x%llx:\n", cfg_desc_handle);
892 print_descriptor_info(jpeg->dev, cfg_desc);
893 dev_dbg(jpeg->dev, "enc desc - 0x%llx:\n", desc_handle);
894 print_descriptor_info(jpeg->dev, desc);
895 print_wrapper_info(jpeg->dev, reg);
896 print_cast_status(jpeg->dev, reg, MXC_JPEG_ENCODE);
897
898 /* validate the configuration descriptor */
899 mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
900 }
901
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 29890 bytes --]
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v7 6/9] media: Add parsing for APP14 data segment in jpeg helpers
2021-01-11 19:28 ` [PATCH v7 6/9] media: Add parsing for APP14 data segment in jpeg helpers Mirela Rabulea
@ 2021-01-12 14:58 ` Philipp Zabel
0 siblings, 0 replies; 20+ messages in thread
From: Philipp Zabel @ 2021-01-12 14:58 UTC (permalink / raw)
To: Mirela Rabulea, mchehab, hverkuil-cisco, shawnguo, robh+dt
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
On Mon, 2021-01-11 at 21:28 +0200, Mirela Rabulea wrote:
> From: Mirela Rabulea <mirela.rabulea@nxp.com>
>
> According to Rec. ITU-T T.872 (06/2012) 6.5.3
> APP14 segment is for color encoding, it contains a transform flag, which
> may have values of 0, 1 and 2 and are interpreted as follows:
> 0 - CMYK for images that are encoded with four components
> - RGB for images that are encoded with three components
> 1 - An image encoded with three components using YCbCr colour encoding.
> 2 - An image encoded with four components using YCCK colour encoding.
>
> This is used in imx-jpeg decoder, to distinguish between
> YUV444 and RGB24.
>
> Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
> ---
> Changes in v7:
> Check there are 6 bytes available in the stream before checking for "Adobe\0"
> Change jpeg_parse_app14_data function to differentiate between the 3 scenarios: app14 missing, or app14 present but with/without parsing errors:
> App14 missing => Added V4L2_JPEG_APP14_TF_UNKNOWN to the enum v4l2_jpeg_app14_tf, use it to indicate app14 & TF is missing
> App14 present without parsing errors => Return the transform flag value as enum v4l2_jpeg_app14_tf (new paramater of jpeg_parse_app14_data function)
> App14 present with parsing errors => Return -EINVAL from jpeg_parse_app14_data, also return from calling function (v4l2_jpeg_parse_header) when this error is met.
>
> drivers/media/v4l2-core/v4l2-jpeg.c | 47 +++++++++++++++++++++++++++--
> include/media/v4l2-jpeg.h | 20 ++++++++++++
> 2 files changed, 65 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/v4l2-core/v4l2-jpeg.c b/drivers/media/v4l2-core/v4l2-jpeg.c
> index 8947fd95c6f1..8d5fedb136dd 100644
> --- a/drivers/media/v4l2-core/v4l2-jpeg.c
> +++ b/drivers/media/v4l2-core/v4l2-jpeg.c
> @@ -45,6 +45,7 @@ MODULE_LICENSE("GPL");
> #define DHP 0xffde /* hierarchical progression */
> #define EXP 0xffdf /* expand reference */
> #define APP0 0xffe0 /* application data */
> +#define APP14 0xffee /* application data for colour encoding */
> #define APP15 0xffef
> #define JPG0 0xfff0 /* extensions */
> #define JPG13 0xfffd
> @@ -444,8 +445,44 @@ static int jpeg_skip_segment(struct jpeg_stream *stream)
> return jpeg_skip(stream, len - 2);
> }
>
> +/* Rec. ITU-T T.872 (06/2012) 6.5.3 */
> +static int jpeg_parse_app14_data(struct jpeg_stream *stream,
> + enum v4l2_jpeg_app14_tf *tf)
> +{
> + int ret;
> + int lp;
> + int skip;
> +
> + lp = jpeg_get_word_be(stream);
> + if (lp < 0)
> + return lp;
> +
> + /* Check for "Adobe\0" in Ap1..6 */
> + if (stream->curr + 6 > stream->end ||
> + strncmp(stream->curr, "Adobe\0", 6))
> + return -EINVAL;
> +
> + /* get to Ap12 */
> + ret = jpeg_skip(stream, 11);
> + if (ret < 0)
> + return ret;
> +
> + ret = jpeg_get_byte(stream);
> + if (ret < 0)
> + return ret;
> +
> + *tf = ret;
> +
> + skip = lp - 2 - 11;
> + ret = jpeg_skip(stream, skip);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
This could be simplified to
return jpeg_skip(stream, skip);
although it would be better style to move the *tf = ... assignment down
past the last error return instead. Either way,
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
regards
Philipp
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v7 9/9] media: imx-jpeg: Use v4l2 jpeg helpers in mxc-jpeg
2021-01-11 19:28 ` [PATCH v7 9/9] media: imx-jpeg: Use v4l2 jpeg helpers in mxc-jpeg Mirela Rabulea
@ 2021-01-12 15:00 ` Philipp Zabel
0 siblings, 0 replies; 20+ messages in thread
From: Philipp Zabel @ 2021-01-12 15:00 UTC (permalink / raw)
To: Mirela Rabulea, mchehab, hverkuil-cisco, shawnguo, robh+dt
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
On Mon, 2021-01-11 at 21:28 +0200, Mirela Rabulea wrote:
> From: Mirela Rabulea <mirela.rabulea@nxp.com>
>
> Use v4l2_jpeg_parse_header in mxc_jpeg_parse, remove the old
> parsing way, which was duplicated in other jpeg drivers.
>
> Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
> ---
> drivers/media/platform/imx-jpeg/Kconfig | 1 +
> drivers/media/platform/imx-jpeg/mxc-jpeg.c | 267 ++++++---------------
> drivers/media/platform/imx-jpeg/mxc-jpeg.h | 26 +-
> 3 files changed, 80 insertions(+), 214 deletions(-)
>
> diff --git a/drivers/media/platform/imx-jpeg/Kconfig b/drivers/media/platform/imx-jpeg/Kconfig
> index 7cc89e5eff90..d875f7c88cda 100644
> --- a/drivers/media/platform/imx-jpeg/Kconfig
> +++ b/drivers/media/platform/imx-jpeg/Kconfig
> @@ -4,6 +4,7 @@ config VIDEO_IMX8_JPEG
> depends on VIDEO_DEV && VIDEO_V4L2
> select VIDEOBUF2_DMA_CONTIG
> select V4L2_MEM2MEM_DEV
> + select V4L2_JPEG_HELPER
> default m
> help
> This is a video4linux2 driver for the i.MX8 QXP/QM integrated
> diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
> index 9f1052779c58..b19fc98c1ce3 100644
> --- a/drivers/media/platform/imx-jpeg/mxc-jpeg.c
> +++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
> @@ -52,6 +52,7 @@
> #include <linux/pm_domain.h>
> #include <linux/string.h>
>
> +#include <media/v4l2-jpeg.h>
> #include <media/v4l2-mem2mem.h>
> #include <media/v4l2-ioctl.h>
> #include <media/v4l2-common.h>
> @@ -65,12 +66,16 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
> {
> .name = "JPEG",
> .fourcc = V4L2_PIX_FMT_JPEG,
> + .subsampling = -1,
> + .nc = -1,
> .colplanes = 1,
> .flags = MXC_JPEG_FMT_TYPE_ENC,
> },
> {
> .name = "RGB", /*RGBRGB packed format*/
> .fourcc = V4L2_PIX_FMT_RGB24,
> + .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
> + .nc = 3,
> .depth = 24,
> .colplanes = 1,
> .h_align = 3,
> @@ -80,6 +85,8 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
> {
> .name = "ARGB", /* ARGBARGB packed format */
> .fourcc = V4L2_PIX_FMT_ARGB32,
> + .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
> + .nc = 4,
> .depth = 32,
> .colplanes = 1,
> .h_align = 3,
> @@ -89,6 +96,8 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
> {
> .name = "YUV420", /* 1st plane = Y, 2nd plane = UV */
> .fourcc = V4L2_PIX_FMT_NV12,
> + .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420,
> + .nc = 3,
> .depth = 12, /* 6 bytes (4Y + UV) for 4 pixels */
> .colplanes = 2, /* 1 plane Y, 1 plane UV interleaved */
> .h_align = 4,
> @@ -98,6 +107,8 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
> {
> .name = "YUV422", /* YUYV */
> .fourcc = V4L2_PIX_FMT_YUYV,
> + .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422,
> + .nc = 3,
> .depth = 16,
> .colplanes = 1,
> .h_align = 4,
> @@ -107,6 +118,8 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
> {
> .name = "YUV444", /* YUVYUV */
> .fourcc = V4L2_PIX_FMT_YUV24,
> + .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
> + .nc = 3,
> .depth = 24,
> .colplanes = 1,
> .h_align = 3,
> @@ -116,6 +129,8 @@ static struct mxc_jpeg_fmt mxc_formats[] = {
> {
> .name = "Gray", /* Gray (Y8/Y12) or Single Comp */
> .fourcc = V4L2_PIX_FMT_GREY,
> + .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY,
> + .nc = 1,
> .depth = 8,
> .colplanes = 1,
> .h_align = 3,
> @@ -384,33 +399,6 @@ static enum mxc_jpeg_image_format mxc_jpeg_fourcc_to_imgfmt(u32 fourcc)
> }
> }
>
> -static int mxc_jpeg_imgfmt_to_fourcc(enum mxc_jpeg_image_format imgfmt,
> - u32 *fourcc)
> -{
> - switch (imgfmt) {
> - case MXC_JPEG_GRAY:
> - *fourcc = V4L2_PIX_FMT_GREY;
> - return 0;
> - case MXC_JPEG_YUV422:
> - *fourcc = V4L2_PIX_FMT_YUYV;
> - return 0;
> - case MXC_JPEG_YUV420:
> - *fourcc = V4L2_PIX_FMT_NV12;
> - return 0;
> - case MXC_JPEG_YUV444:
> - *fourcc = V4L2_PIX_FMT_YUV24;
> - return 0;
> - case MXC_JPEG_RGB:
> - *fourcc = V4L2_PIX_FMT_RGB24;
> - return 0;
> - case MXC_JPEG_ARGB:
> - *fourcc = V4L2_PIX_FMT_ARGB32;
> - return 0;
> - default:
> - return 1;
> - }
> -}
> -
> static struct mxc_jpeg_q_data *mxc_jpeg_get_q_data(struct mxc_jpeg_ctx *ctx,
> enum v4l2_buf_type type)
> {
> @@ -1130,45 +1118,6 @@ static void mxc_jpeg_stop_streaming(struct vb2_queue *q)
> release_active_buffers(q, VB2_BUF_STATE_ERROR);
> }
>
> -struct mxc_jpeg_stream {
> - u8 *addr;
> - u32 loc;
> - u32 end;
> -};
> -
> -static int get_byte(struct mxc_jpeg_stream *stream)
> -{
> - int ret;
> -
> - if (stream->loc >= stream->end)
> - return -1;
> - ret = stream->addr[stream->loc];
> - stream->loc++;
> - return ret;
> -}
> -
> -static int get_sof(struct device *dev,
> - struct mxc_jpeg_stream *stream,
> - struct mxc_jpeg_sof *sof)
> -{
> - int i;
> -
> - if (stream->loc + sizeof(struct mxc_jpeg_sof) >= stream->end)
> - return -1;
> - memcpy(sof, &stream->addr[stream->loc], sizeof(struct mxc_jpeg_sof));
> - _bswap16(&sof->length);
> - _bswap16(&sof->height);
> - _bswap16(&sof->width);
> - dev_dbg(dev, "JPEG SOF: precision=%d\n", sof->precision);
> - dev_dbg(dev, "JPEG SOF: height=%d, width=%d\n",
> - sof->height, sof->width);
> - for (i = 0; i < sof->components_no; i++) {
> - dev_dbg(dev, "JPEG SOF: comp_id=%d, H=0x%x, V=0x%x\n",
> - sof->comp[i].id, sof->comp[i].v, sof->comp[i].h);
> - }
> - return 0;
> -}
> -
> static int mxc_jpeg_valid_comp_id(struct device *dev,
> struct mxc_jpeg_sof *sof,
> struct mxc_jpeg_sos *sos)
> @@ -1198,45 +1147,18 @@ static int mxc_jpeg_valid_comp_id(struct device *dev,
> return valid;
> }
>
> -static enum mxc_jpeg_image_format
> -mxc_jpeg_get_image_format(struct device *dev, const struct mxc_jpeg_sof *sof)
> +static u32 mxc_jpeg_get_image_format(struct device *dev,
> + const struct v4l2_jpeg_header header)
> {
> - if (sof->components_no == 1) {
> - dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_GRAY\n");
> - return MXC_JPEG_GRAY;
> - }
> - if (sof->components_no == 3) {
> - if (sof->comp[0].h == 2 && sof->comp[0].v == 2 &&
> - sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> - sof->comp[2].h == 1 && sof->comp[2].v == 1){
> - dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV420\n");
> - return MXC_JPEG_YUV420;
> - }
> - if (sof->comp[0].h == 2 && sof->comp[0].v == 1 &&
> - sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> - sof->comp[2].h == 1 && sof->comp[2].v == 1){
> - dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV422\n");
> - return MXC_JPEG_YUV422;
> - }
> - if (sof->comp[0].h == 1 && sof->comp[0].v == 1 &&
> - sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> - sof->comp[2].h == 1 && sof->comp[2].v == 1){
> - dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV444\n");
> - return MXC_JPEG_YUV444;
> - }
> - }
> - if (sof->components_no == 4) {
> - if (sof->comp[0].h == 1 && sof->comp[0].v == 1 &&
> - sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> - sof->comp[2].h == 1 && sof->comp[2].v == 1 &&
> - sof->comp[3].h == 1 && sof->comp[3].v == 1){
> - /* this is not tested */
> - dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_ARGB\n");
> - return MXC_JPEG_ARGB;
> - }
> - }
> + int i;
> +
> + for (i = 0; i < MXC_JPEG_NUM_FORMATS; i++)
> + if (mxc_formats[i].subsampling == header.frame.subsampling &&
> + mxc_formats[i].nc == header.frame.num_components)
> + return mxc_formats[i].fourcc;
If the JPEG is 4:4:4, 3 components, this function always returns
V4L2_PIX_FMT_RGB24, which comes before V4L2_PIX_FMT_YUV24 in the list.
I think it would be better to move the app14_tf fixup in here and let
this function return the correct format.
.fourcc = V4L2_PIX_FMT_RGB24,
> + .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
> + .nc = 3,
> +
> dev_err(dev, "Could not identify image format\n");
Printing subsampling and number of components might be helpful here.
> - return MXC_JPEG_INVALID;
> + return 0;
> }
>
> static void mxc_jpeg_bytesperline(struct mxc_jpeg_q_data *q,
> @@ -1290,122 +1212,69 @@ static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
> struct device *dev = ctx->mxc_jpeg->dev;
> struct mxc_jpeg_q_data *q_data_out, *q_data_cap;
> enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> - struct mxc_jpeg_stream stream;
> - bool notfound = true;
> - bool app14 = false;
> bool src_chg = false;
> - u8 app14_transform = 0;
> - struct mxc_jpeg_sof sof, *psof = NULL;
> - struct mxc_jpeg_sos *psos = NULL;
> - int byte;
> - u8 *next = NULL;
> - enum mxc_jpeg_image_format img_fmt;
> u32 fourcc;
> + struct v4l2_jpeg_header header;
> + struct mxc_jpeg_sof *psof = NULL;
> + struct mxc_jpeg_sos *psos = NULL;
> + int ret;
>
> - memset(&sof, 0, sizeof(struct mxc_jpeg_sof));
> - stream.addr = src_addr;
> - stream.end = size;
> - stream.loc = 0;
> - *dht_needed = true;
> + memset(&header, 0, sizeof(header));
> + ret = v4l2_jpeg_parse_header((void *)src_addr, size, &header);
> + if (ret < 0) {
> + dev_err(dev, "Error parsing JPEG stream markers\n");
> + return ret;
> + }
>
> - /* check stream starts with SOI */
> - byte = get_byte(&stream);
> - if (byte == -1 || byte != 0xFF)
> - return -EINVAL;
> - byte = get_byte(&stream);
> - if (byte == -1 || byte != 0xD8)
> - return -EINVAL;
> + /* if DHT marker present, no need to inject default one */
> + *dht_needed = (header.num_dht == 0);
>
> - while (notfound) {
> - byte = get_byte(&stream);
> - if (byte == -1)
> - return -EINVAL;
> - if (byte != 0xff)
> - continue;
> - do {
> - byte = get_byte(&stream);
> - } while (byte == 0xff);
> - if (byte == -1)
> - return false;
> - if (byte == 0)
> - continue;
> - switch (byte) {
> - case DHT:
> - /* DHT marker present, no need to inject default one */
> - *dht_needed = false;
> - break;
> - case SOF2: /* Progressive DCF frame definition */
> - dev_err(dev,
> - "Progressive JPEG not supported by hardware");
> - return -EINVAL;
> - case SOF1: /* Extended sequential DCF frame definition */
> - case SOF0: /* Baseline sequential DCF frame definition */
> - if (get_sof(dev, &stream, &sof) == -1)
> - break;
> - next = stream.addr + stream.loc;
> - psof = (struct mxc_jpeg_sof *)next;
> - break;
> - case SOS:
> - next = stream.addr + stream.loc;
> - psos = (struct mxc_jpeg_sos *)next;
> - notfound = false;
> - break;
> - case APP14:
> - app14 = true;
> - /*
> - * Application Data Syntax is:
> - * 2 bytes(APPn:0xFF,0xEE), 2 bytes(Lp), Ap1...ApLp-2
> - * The transform flag is in Ap12
> - * stream.loc is now on APPn-0xEE byte
> - */
> - app14_transform = *(stream.addr + stream.loc + 12 + 1);
> - break;
> - default:
> - notfound = true;
> - }
> - }
> q_data_out = mxc_jpeg_get_q_data(ctx,
> V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
> if (q_data_out->w == 0 && q_data_out->h == 0) {
> dev_warn(dev, "Invalid user resolution 0x0");
> dev_warn(dev, "Keeping resolution from JPEG: %dx%d",
> - sof.width, sof.height);
> - q_data_out->w = sof.width;
> - q_data_out->h = sof.height;
> - } else if (sof.width != q_data_out->w || sof.height != q_data_out->h) {
> + header.frame.width, header.frame.height);
> + q_data_out->w = header.frame.width;
> + q_data_out->h = header.frame.height;
> + } else if (header.frame.width != q_data_out->w ||
> + header.frame.height != q_data_out->h) {
> dev_err(dev,
> "Resolution mismatch: %dx%d (JPEG) versus %dx%d(user)",
> - sof.width, sof.height, q_data_out->w, q_data_out->h);
> + header.frame.width, header.frame.height,
> + q_data_out->w, q_data_out->h);
> return -EINVAL;
> }
> - if (sof.width % 8 != 0 || sof.height % 8 != 0) {
> + if (header.frame.width % 8 != 0 || header.frame.height % 8 != 0) {
> dev_err(dev, "JPEG width or height not multiple of 8: %dx%d\n",
> - sof.width, sof.height);
> + header.frame.width, header.frame.height);
> return -EINVAL;
> }
> - if (sof.width > MXC_JPEG_MAX_WIDTH ||
> - sof.height > MXC_JPEG_MAX_HEIGHT) {
> + if (header.frame.width > MXC_JPEG_MAX_WIDTH ||
> + header.frame.height > MXC_JPEG_MAX_HEIGHT) {
> dev_err(dev, "JPEG width or height should be <= 8192: %dx%d\n",
> - sof.width, sof.height);
> + header.frame.width, header.frame.height);
> return -EINVAL;
> }
> - if (sof.width < MXC_JPEG_MIN_WIDTH ||
> - sof.height < MXC_JPEG_MIN_HEIGHT) {
> + if (header.frame.width < MXC_JPEG_MIN_WIDTH ||
> + header.frame.height < MXC_JPEG_MIN_HEIGHT) {
> dev_err(dev, "JPEG width or height should be > 64: %dx%d\n",
> - sof.width, sof.height);
> + header.frame.width, header.frame.height);
> return -EINVAL;
> }
> - if (sof.components_no > MXC_JPEG_MAX_COMPONENTS) {
> + if (header.frame.num_components > V4L2_JPEG_MAX_COMPONENTS) {
> dev_err(dev, "JPEG number of components should be <=%d",
> - MXC_JPEG_MAX_COMPONENTS);
> + V4L2_JPEG_MAX_COMPONENTS);
> return -EINVAL;
> }
> /* check and, if necessary, patch component IDs*/
> + psof = (struct mxc_jpeg_sof *)header.sof.start;
> + psos = (struct mxc_jpeg_sos *)header.sos.start;
> if (!mxc_jpeg_valid_comp_id(dev, psof, psos))
> dev_warn(dev, "JPEG component ids should be 0-3 or 1-4");
>
> - img_fmt = mxc_jpeg_get_image_format(dev, &sof);
> - if (img_fmt == MXC_JPEG_INVALID)
> + fourcc = mxc_jpeg_get_image_format(dev, header);
> + if (fourcc == 0)
> return -EINVAL;
>
> /*
> @@ -1413,12 +1282,11 @@ static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
> * encoded with 3 components have RGB colorspace, see Recommendation
> * ITU-T T.872 chapter 6.5.3 APP14 marker segment for colour encoding
> */
> - if (img_fmt == MXC_JPEG_YUV444 && app14 && app14_transform == 0)
> - img_fmt = MXC_JPEG_RGB;
> -
> - if (mxc_jpeg_imgfmt_to_fourcc(img_fmt, &fourcc)) {
> - dev_err(dev, "Fourcc not found for %d", img_fmt);
> - return -EINVAL;
> + if (fourcc == V4L2_PIX_FMT_YUV24 || fourcc == V4L2_PIX_FMT_RGB24) {
> + if (header.app14_tf == V4L2_JPEG_APP14_TF_CMYK_RGB)
> + fourcc = V4L2_PIX_FMT_RGB24;
> + else
> + fourcc = V4L2_PIX_FMT_YUV24;
> }
See above, this fixup could be moved into mxc_jpeg_get_image_format().
With that,
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
regards
Philipp
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
2021-01-11 19:28 ` [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
2021-01-12 0:36 ` kernel test robot
@ 2021-01-19 10:31 ` Hans Verkuil
2021-02-22 19:09 ` [EXT] " Mirela Rabulea
2021-01-20 11:07 ` kernel test robot
2021-01-20 13:52 ` kernel test robot
3 siblings, 1 reply; 20+ messages in thread
From: Hans Verkuil @ 2021-01-19 10:31 UTC (permalink / raw)
To: Mirela Rabulea, mchehab, shawnguo, robh+dt, p.zabel
Cc: paul.kocialkowski, linux-media, linux-kernel, linux-imx, s.hauer,
aisheng.dong, daniel.baluta, robert.chiras, laurentiu.palcu,
mark.rutland, devicetree, ezequiel, laurent.pinchart+renesas,
niklas.soderlund+renesas, dafna.hirschfeld
On 11/01/2021 20:28, Mirela Rabulea wrote:
> From: Mirela Rabulea <mirela.rabulea@nxp.com>
>
> V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM application
> processors.
> The multi-planar buffers API is used.
>
> Baseline and extended sequential jpeg decoding is supported.
> Progressive jpeg decoding is not supported by the IP.
> Supports encode and decode of various formats:
> YUV444, YUV422, YUV420, RGB, ARGB, Gray
> YUV420 is the only multi-planar format supported.
> Minimum resolution is 64 x 64, maximum 8192 x 8192.
> The alignment requirements for the resolution depend on the format,
> multiple of 16 resolutions should work for all formats.
>
> v4l2-compliance tests are passing, including the
> streaming tests, "v4l2-compliance -s"
>
> Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
> ---
> Changes in v7:
> Add print_mxc_buf() to replace print_buf_preview() and print_nbuf_to_eoi(),
> and inside, use the print_hex_dump() from printk.h, also, print all the planes.
>
> drivers/media/platform/Kconfig | 2 +
> drivers/media/platform/Makefile | 1 +
> drivers/media/platform/imx-jpeg/Kconfig | 10 +
> drivers/media/platform/imx-jpeg/Makefile | 3 +
> drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c | 168 ++
> drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h | 140 +
> drivers/media/platform/imx-jpeg/mxc-jpeg.c | 2289 +++++++++++++++++
> drivers/media/platform/imx-jpeg/mxc-jpeg.h | 184 ++
> 8 files changed, 2797 insertions(+)
> create mode 100644 drivers/media/platform/imx-jpeg/Kconfig
> create mode 100644 drivers/media/platform/imx-jpeg/Makefile
> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.c
> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.h
One high-level comment: why introduce the driver in patch 3/9 and then
change it again in 9/9? I would very much prefer to have just a single
patch that adds this driver, i.e. merge patch 3 and 9 into a single
patch.
>
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index e419b18613c6..6244e573aea5 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -239,6 +239,8 @@ config VIDEO_IMX_PXP
> The i.MX Pixel Pipeline is a memory-to-memory engine for scaling,
> color space conversion, and rotation.
>
> +source "drivers/media/platform/imx-jpeg/Kconfig"
> +
> config VIDEO_MEDIATEK_JPEG
> tristate "Mediatek JPEG Codec driver"
> depends on MTK_IOMMU_V1 || MTK_IOMMU || COMPILE_TEST
> diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
> index 9d4d6370908d..eedc14aafb32 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -21,6 +21,7 @@ obj-$(CONFIG_VIDEO_MX2_EMMAPRP) += mx2_emmaprp.o
> obj-$(CONFIG_VIDEO_CODA) += coda/
>
> obj-$(CONFIG_VIDEO_IMX_PXP) += imx-pxp.o
> +obj-$(CONFIG_VIDEO_IMX8_JPEG) += imx-jpeg/
>
> obj-$(CONFIG_VIDEO_MEM2MEM_DEINTERLACE) += m2m-deinterlace.o
>
> diff --git a/drivers/media/platform/imx-jpeg/Kconfig b/drivers/media/platform/imx-jpeg/Kconfig
> new file mode 100644
> index 000000000000..7cc89e5eff90
> --- /dev/null
> +++ b/drivers/media/platform/imx-jpeg/Kconfig
> @@ -0,0 +1,10 @@
> +# SPDX-License-Identifier: GPL-2.0
> +config VIDEO_IMX8_JPEG
> + tristate "IMX8 JPEG Encoder/Decoder"
> + depends on VIDEO_DEV && VIDEO_V4L2
> + select VIDEOBUF2_DMA_CONTIG
> + select V4L2_MEM2MEM_DEV
> + default m
> + help
> + This is a video4linux2 driver for the i.MX8 QXP/QM integrated
> + JPEG encoder/decoder.
> diff --git a/drivers/media/platform/imx-jpeg/Makefile b/drivers/media/platform/imx-jpeg/Makefile
> new file mode 100644
> index 000000000000..bf19c82e61b4
> --- /dev/null
> +++ b/drivers/media/platform/imx-jpeg/Makefile
> @@ -0,0 +1,3 @@
> +# SPDX-License-Identifier: GPL-2.0
> +mxc-jpeg-encdec-objs := mxc-jpeg-hw.o mxc-jpeg.o
> +obj-$(CONFIG_VIDEO_IMX8_JPEG) += mxc-jpeg-encdec.o
> diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
> new file mode 100644
> index 000000000000..29c604b1b179
> --- /dev/null
> +++ b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
> @@ -0,0 +1,168 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
> + *
> + * Copyright 2018-2019 NXP
> + */
> +
> +#include <linux/delay.h>
> +#include <media/videobuf2-core.h>
> +#include "mxc-jpeg-hw.h"
> +
> +#define print_wrapper_reg(dev, base_address, reg_offset)\
> + internal_print_wrapper_reg(dev, (base_address), #reg_offset,\
> + (reg_offset))
> +#define internal_print_wrapper_reg(dev, base_address, reg_name, reg_offset) {\
> + int val;\
> + val = readl((base_address) + (reg_offset));\
> + dev_dbg(dev, "Wrapper reg %s = 0x%x\n", reg_name, val);\
> +}
> +
> +void print_descriptor_info(struct device *dev, struct mxc_jpeg_desc *desc)
> +{
> + dev_dbg(dev, " MXC JPEG NEXT_DESCPT_PTR 0x%x\n",
> + desc->next_descpt_ptr);
> + dev_dbg(dev, " MXC JPEG BUF_BASE0 0x%x\n", desc->buf_base0);
> + dev_dbg(dev, " MXC JPEG BUF_BASE1 0x%x\n", desc->buf_base1);
> + dev_dbg(dev, " MXC JPEG LINE_PITCH %d\n", desc->line_pitch);
> + dev_dbg(dev, " MXC JPEG STM_BUFBASE 0x%x\n", desc->stm_bufbase);
> + dev_dbg(dev, " MXC JPEG STM_BUFSIZE %d\n", desc->stm_bufsize);
> + dev_dbg(dev, " MXC JPEG IMGSIZE %x (%d x %d)\n", desc->imgsize,
> + desc->imgsize >> 16, desc->imgsize & 0xFFFF);
> + dev_dbg(dev, " MXC JPEG STM_CTRL 0x%x\n", desc->stm_ctrl);
> +}
> +
> +void print_cast_status(struct device *dev, void __iomem *reg,
> + unsigned int mode)
> +{
> + dev_dbg(dev, "CAST IP status regs:\n");
> + print_wrapper_reg(dev, reg, CAST_STATUS0);
> + print_wrapper_reg(dev, reg, CAST_STATUS1);
> + print_wrapper_reg(dev, reg, CAST_STATUS2);
> + print_wrapper_reg(dev, reg, CAST_STATUS3);
> + print_wrapper_reg(dev, reg, CAST_STATUS4);
> + print_wrapper_reg(dev, reg, CAST_STATUS5);
> + print_wrapper_reg(dev, reg, CAST_STATUS6);
> + print_wrapper_reg(dev, reg, CAST_STATUS7);
> + print_wrapper_reg(dev, reg, CAST_STATUS8);
> + print_wrapper_reg(dev, reg, CAST_STATUS9);
> + print_wrapper_reg(dev, reg, CAST_STATUS10);
> + print_wrapper_reg(dev, reg, CAST_STATUS11);
> + print_wrapper_reg(dev, reg, CAST_STATUS12);
> + print_wrapper_reg(dev, reg, CAST_STATUS13);
> + if (mode == MXC_JPEG_DECODE)
> + return;
> + print_wrapper_reg(dev, reg, CAST_STATUS14);
> + print_wrapper_reg(dev, reg, CAST_STATUS15);
> + print_wrapper_reg(dev, reg, CAST_STATUS16);
> + print_wrapper_reg(dev, reg, CAST_STATUS17);
> + print_wrapper_reg(dev, reg, CAST_STATUS18);
> + print_wrapper_reg(dev, reg, CAST_STATUS19);
> +}
> +
> +void print_wrapper_info(struct device *dev, void __iomem *reg)
> +{
> + dev_dbg(dev, "Wrapper regs:\n");
> + print_wrapper_reg(dev, reg, GLB_CTRL);
> + print_wrapper_reg(dev, reg, COM_STATUS);
> + print_wrapper_reg(dev, reg, BUF_BASE0);
> + print_wrapper_reg(dev, reg, BUF_BASE1);
> + print_wrapper_reg(dev, reg, LINE_PITCH);
> + print_wrapper_reg(dev, reg, STM_BUFBASE);
> + print_wrapper_reg(dev, reg, STM_BUFSIZE);
> + print_wrapper_reg(dev, reg, IMGSIZE);
> + print_wrapper_reg(dev, reg, STM_CTRL);
> +}
> +
> +void mxc_jpeg_enable_irq(void __iomem *reg, int slot)
> +{
> + writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_IRQ_EN));
> +}
> +
> +void mxc_jpeg_sw_reset(void __iomem *reg)
> +{
> + /*
> + * engine soft reset, internal state machine reset
> + * this will not reset registers, however, it seems
> + * the registers may remain inconsistent with the internal state
> + * so, on purpose, at least let GLB_CTRL bits clear after this reset
> + */
> + writel(GLB_CTRL_SFT_RST, reg + GLB_CTRL);
> +}
> +
> +void mxc_jpeg_enc_mode_conf(struct device *dev, void __iomem *reg)
> +{
> + dev_dbg(dev, "CAST Encoder CONFIG...\n");
> + /*
> + * "Config_Mode" enabled, "Config_Mode auto clear enabled",
> + */
> + writel(0xa0, reg + CAST_MODE);
> +
> + /* all markers and segments */
> + writel(0x3ff, reg + CAST_CFG_MODE);
> +
> + /* quality factor */
> + writel(0x4b, reg + CAST_QUALITY);
> +}
> +
> +void mxc_jpeg_enc_mode_go(struct device *dev, void __iomem *reg)
> +{
> + dev_dbg(dev, "CAST Encoder GO...\n");
> + /*
> + * "GO" enabled, "GO bit auto clear" enabled
> + */
> + writel(0x140, reg + CAST_MODE);
> +}
> +
> +void mxc_jpeg_dec_mode_go(struct device *dev, void __iomem *reg)
> +{
> + dev_dbg(dev, "CAST Decoder GO...\n");
> + writel(MXC_DEC_EXIT_IDLE_MODE, reg + CAST_CTRL);
> +}
> +
> +int mxc_jpeg_enable(void __iomem *reg)
> +{
> + u32 regval;
> +
> + writel(GLB_CTRL_JPG_EN, reg + GLB_CTRL);
> + regval = readl(reg);
> + return regval;
> +}
> +
> +void mxc_jpeg_enable_slot(void __iomem *reg, int slot)
> +{
> + u32 regval;
> +
> + regval = readl(reg + GLB_CTRL);
> + writel(GLB_CTRL_SLOT_EN(slot) | regval, reg + GLB_CTRL);
> +}
> +
> +void mxc_jpeg_set_l_endian(void __iomem *reg, int le)
> +{
> + u32 regval;
> +
> + regval = readl(reg + GLB_CTRL);
> + regval &= ~GLB_CTRL_L_ENDIAN(1); /* clear */
> + writel(GLB_CTRL_L_ENDIAN(le) | regval, reg + GLB_CTRL); /* set */
> +}
> +
> +void mxc_jpeg_set_bufsize(struct mxc_jpeg_desc *desc, u32 bufsize)
> +{
> + desc->stm_bufsize = bufsize;
> +}
> +
> +void mxc_jpeg_set_res(struct mxc_jpeg_desc *desc, u16 w, u16 h)
> +{
> + desc->imgsize = w << 16 | h;
> +}
> +
> +void mxc_jpeg_set_line_pitch(struct mxc_jpeg_desc *desc, u32 line_pitch)
> +{
> + desc->line_pitch = line_pitch;
> +}
> +
> +void mxc_jpeg_set_desc(u32 desc, void __iomem *reg, int slot)
> +{
> + writel(desc | MXC_NXT_DESCPT_EN,
> + reg + MXC_SLOT_OFFSET(slot, SLOT_NXT_DESCPT_PTR));
> +}
> diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
> new file mode 100644
> index 000000000000..ae70d3a0dc24
> --- /dev/null
> +++ b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
> @@ -0,0 +1,140 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
> + *
> + * Copyright 2018-2019 NXP
> + */
> +
> +#ifndef _MXC_JPEG_HW_H
> +#define _MXC_JPEG_HW_H
> +
> +/* JPEG Decoder/Encoder Wrapper Register Map */
> +#define GLB_CTRL 0x0
> +#define COM_STATUS 0x4
> +#define BUF_BASE0 0x14
> +#define BUF_BASE1 0x18
> +#define LINE_PITCH 0x1C
> +#define STM_BUFBASE 0x20
> +#define STM_BUFSIZE 0x24
> +#define IMGSIZE 0x28
> +#define STM_CTRL 0x2C
> +
> +/* CAST JPEG-Decoder/Encoder Status Register Map (read-only)*/
> +#define CAST_STATUS0 0x100
> +#define CAST_STATUS1 0x104
> +#define CAST_STATUS2 0x108
> +#define CAST_STATUS3 0x10c
> +#define CAST_STATUS4 0x110
> +#define CAST_STATUS5 0x114
> +#define CAST_STATUS6 0x118
> +#define CAST_STATUS7 0x11c
> +#define CAST_STATUS8 0x120
> +#define CAST_STATUS9 0x124
> +#define CAST_STATUS10 0x128
> +#define CAST_STATUS11 0x12c
> +#define CAST_STATUS12 0x130
> +#define CAST_STATUS13 0x134
> +/* the following are for encoder only */
> +#define CAST_STATUS14 0x138
> +#define CAST_STATUS15 0x13c
> +#define CAST_STATUS16 0x140
> +#define CAST_STATUS17 0x144
> +#define CAST_STATUS18 0x148
> +#define CAST_STATUS19 0x14c
> +
> +/* CAST JPEG-Decoder Control Register Map (write-only) */
> +#define CAST_CTRL CAST_STATUS13
> +
> +/* CAST JPEG-Encoder Control Register Map (write-only) */
> +#define CAST_MODE CAST_STATUS0
> +#define CAST_CFG_MODE CAST_STATUS1
> +#define CAST_QUALITY CAST_STATUS2
> +#define CAST_RSVD CAST_STATUS3
> +#define CAST_REC_REGS_SEL CAST_STATUS4
> +#define CAST_LUMTH CAST_STATUS5
> +#define CAST_CHRTH CAST_STATUS6
> +#define CAST_NOMFRSIZE_LO CAST_STATUS7
> +#define CAST_NOMFRSIZE_HI CAST_STATUS8
> +#define CAST_OFBSIZE_LO CAST_STATUS9
> +#define CAST_OFBSIZE_HI CAST_STATUS10
> +
> +#define MXC_MAX_SLOTS 1 /* TODO use all 4 slots*/
> +/* JPEG-Decoder Wrapper Slot Registers 0..3 */
> +#define SLOT_BASE 0x10000
> +#define SLOT_STATUS 0x0
> +#define SLOT_IRQ_EN 0x4
> +#define SLOT_BUF_PTR 0x8
> +#define SLOT_CUR_DESCPT_PTR 0xC
> +#define SLOT_NXT_DESCPT_PTR 0x10
> +#define MXC_SLOT_OFFSET(slot, offset) ((SLOT_BASE * ((slot) + 1)) + (offset))
> +
> +/* GLB_CTRL fields */
> +#define GLB_CTRL_JPG_EN 0x1
> +#define GLB_CTRL_SFT_RST (0x1 << 1)
> +#define GLB_CTRL_DEC_GO (0x1 << 2)
> +#define GLB_CTRL_L_ENDIAN(le) ((le) << 3)
> +#define GLB_CTRL_SLOT_EN(slot) (0x1 << ((slot) + 4))
> +
> +/* COM_STAUS fields */
> +#define COM_STATUS_DEC_ONGOING(r) (((r) & (1 << 31)) >> 31)
> +#define COM_STATUS_CUR_SLOT(r) (((r) & (0x3 << 29)) >> 29)
> +
> +/* STM_CTRL fields */
> +#define STM_CTRL_PIXEL_PRECISION (0x1 << 2)
> +#define STM_CTRL_IMAGE_FORMAT(img_fmt) ((img_fmt) << 3)
> +#define STM_CTRL_IMAGE_FORMAT_MASK (0xF << 3)
> +#define STM_CTRL_BITBUF_PTR_CLR(clr) ((clr) << 7)
> +#define STM_CTRL_AUTO_START(go) ((go) << 8)
> +#define STM_CTRL_CONFIG_MOD(mod) ((mod) << 9)
> +
> +/* SLOT_STATUS fields for slots 0..3 */
> +#define SLOT_STATUS_FRMDONE (0x1 << 3)
> +#define SLOT_STATUS_ENC_CONFIG_ERR (0x1 << 8)
> +
> +/* SLOT_IRQ_EN fields TBD */
> +
> +#define MXC_NXT_DESCPT_EN 0x1
> +#define MXC_DEC_EXIT_IDLE_MODE 0x4
> +
> +/* JPEG-Decoder Wrapper - STM_CTRL Register Fields */
> +#define MXC_PIXEL_PRECISION(precision) ((precision) / 8 << 2)
> +enum mxc_jpeg_image_format {
> + MXC_JPEG_INVALID = -1,
> + MXC_JPEG_YUV420 = 0x0, /* 2 Plannar, Y=1st plane UV=2nd plane */
> + MXC_JPEG_YUV422 = 0x1, /* 1 Plannar, YUYV sequence */
> + MXC_JPEG_RGB = 0x2, /* RGBRGB packed format */
> + MXC_JPEG_YUV444 = 0x3, /* 1 Plannar, YUVYUV sequence */
> + MXC_JPEG_GRAY = 0x4, /* Y8 or Y12 or Single Component */
> + MXC_JPEG_RESERVED = 0x5,
> + MXC_JPEG_ARGB = 0x6,
> +};
> +
> +#include "mxc-jpeg.h"
> +void print_descriptor_info(struct device *dev, struct mxc_jpeg_desc *desc);
> +void print_cast_status(struct device *dev, void __iomem *reg,
> + unsigned int mode);
> +void print_wrapper_info(struct device *dev, void __iomem *reg);
> +void mxc_jpeg_sw_reset(void __iomem *reg);
> +int mxc_jpeg_enable(void __iomem *reg);
> +void wait_frmdone(struct device *dev, void __iomem *reg);
> +void mxc_jpeg_enc_mode_conf(struct device *dev, void __iomem *reg);
> +void mxc_jpeg_enc_mode_go(struct device *dev, void __iomem *reg);
> +void mxc_jpeg_dec_mode_go(struct device *dev, void __iomem *reg);
> +int mxc_jpeg_get_slot(void __iomem *reg);
> +u32 mxc_jpeg_get_offset(void __iomem *reg, int slot);
> +void mxc_jpeg_enable_slot(void __iomem *reg, int slot);
> +void mxc_jpeg_set_l_endian(void __iomem *reg, int le);
> +void mxc_jpeg_enable_irq(void __iomem *reg, int slot);
> +int mxc_jpeg_set_input(void __iomem *reg, u32 in_buf, u32 bufsize);
> +int mxc_jpeg_set_output(void __iomem *reg, u16 out_pitch, u32 out_buf,
> + u16 w, u16 h);
> +void mxc_jpeg_set_config_mode(void __iomem *reg, int config_mode);
> +int mxc_jpeg_set_params(struct mxc_jpeg_desc *desc, u32 bufsize, u16
> + out_pitch, u32 format);
> +void mxc_jpeg_set_bufsize(struct mxc_jpeg_desc *desc, u32 bufsize);
> +void mxc_jpeg_set_res(struct mxc_jpeg_desc *desc, u16 w, u16 h);
> +void mxc_jpeg_set_line_pitch(struct mxc_jpeg_desc *desc, u32 line_pitch);
> +void mxc_jpeg_set_desc(u32 desc, void __iomem *reg, int slot);
> +void mxc_jpeg_set_regs_from_desc(struct mxc_jpeg_desc *desc,
> + void __iomem *reg);
> +#endif
> diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
> new file mode 100644
> index 000000000000..9f1052779c58
> --- /dev/null
> +++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
> @@ -0,0 +1,2289 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM application
> + * processors.
> + *
> + * The multi-planar buffers API is used.
> + *
> + * Baseline and extended sequential jpeg decoding is supported.
> + * Progressive jpeg decoding is not supported by the IP.
> + * Supports encode and decode of various formats:
> + * YUV444, YUV422, YUV420, RGB, ARGB, Gray
> + * YUV420 is the only multi-planar format supported.
> + * Minimum resolution is 64 x 64, maximum 8192 x 8192.
> + * To achieve 8192 x 8192, modify in defconfig: CONFIG_CMA_SIZE_MBYTES=320
> + * The alignment requirements for the resolution depend on the format,
> + * multiple of 16 resolutions should work for all formats.
> + * Special workarounds are made in the driver to support NV12 1080p.
> + * When decoding, the driver detects image resolution and pixel format
> + * from the jpeg stream, by parsing the jpeg markers.
> + *
> + * The IP has 4 slots available for context switching, but only slot 0
> + * was fully tested to work. Context switching is not used by the driver.
> + * Each driver instance (context) allocates a slot for itself, but this
> + * is postponed until device_run, to allow unlimited opens.
> + *
> + * The driver submits jobs to the IP by setting up a descriptor for the
> + * used slot, and then validating it. The encoder has an additional descriptor
> + * for the configuration phase. The driver expects FRM_DONE interrupt from
> + * IP to mark the job as finished.
> + *
> + * The decoder IP has some limitations regarding the component ID's,
> + * but the driver works around this by replacing them in the jpeg stream.
> + *
> + * A module parameter is available for debug purpose (jpeg_tracing), to enable
> + * it, enable dynamic debug for this module and:
> + * echo 1 > /sys/module/mxc_jpeg_encdec/parameters/jpeg_tracing
> + *
> + * This is inspired by the drivers/media/platform/s5p-jpeg driver
> + *
> + * Copyright 2018-2019 NXP
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/io.h>
> +#include <linux/clk.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <linux/irqreturn.h>
> +#include <linux/interrupt.h>
> +#include <linux/pm_domain.h>
> +#include <linux/string.h>
> +
> +#include <media/v4l2-mem2mem.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/v4l2-common.h>
> +#include <media/v4l2-event.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +#include "mxc-jpeg-hw.h"
> +#include "mxc-jpeg.h"
> +
> +static struct mxc_jpeg_fmt mxc_formats[] = {
> + {
> + .name = "JPEG",
> + .fourcc = V4L2_PIX_FMT_JPEG,
> + .colplanes = 1,
> + .flags = MXC_JPEG_FMT_TYPE_ENC,
> + },
> + {
> + .name = "RGB", /*RGBRGB packed format*/
> + .fourcc = V4L2_PIX_FMT_RGB24,
> + .depth = 24,
> + .colplanes = 1,
> + .h_align = 3,
> + .v_align = 3,
> + .flags = MXC_JPEG_FMT_TYPE_RAW,
> + },
> + {
> + .name = "ARGB", /* ARGBARGB packed format */
> + .fourcc = V4L2_PIX_FMT_ARGB32,
> + .depth = 32,
> + .colplanes = 1,
> + .h_align = 3,
> + .v_align = 3,
> + .flags = MXC_JPEG_FMT_TYPE_RAW,
> + },
> + {
> + .name = "YUV420", /* 1st plane = Y, 2nd plane = UV */
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .depth = 12, /* 6 bytes (4Y + UV) for 4 pixels */
> + .colplanes = 2, /* 1 plane Y, 1 plane UV interleaved */
> + .h_align = 4,
> + .v_align = 4,
> + .flags = MXC_JPEG_FMT_TYPE_RAW,
> + },
> + {
> + .name = "YUV422", /* YUYV */
> + .fourcc = V4L2_PIX_FMT_YUYV,
> + .depth = 16,
> + .colplanes = 1,
> + .h_align = 4,
> + .v_align = 3,
> + .flags = MXC_JPEG_FMT_TYPE_RAW,
> + },
> + {
> + .name = "YUV444", /* YUVYUV */
> + .fourcc = V4L2_PIX_FMT_YUV24,
> + .depth = 24,
> + .colplanes = 1,
> + .h_align = 3,
> + .v_align = 3,
> + .flags = MXC_JPEG_FMT_TYPE_RAW,
> + },
> + {
> + .name = "Gray", /* Gray (Y8/Y12) or Single Comp */
> + .fourcc = V4L2_PIX_FMT_GREY,
> + .depth = 8,
> + .colplanes = 1,
> + .h_align = 3,
> + .v_align = 3,
> + .flags = MXC_JPEG_FMT_TYPE_RAW,
> + },
> +};
> +
> +#define MXC_JPEG_NUM_FORMATS ARRAY_SIZE(mxc_formats)
> +
> +static const struct of_device_id mxc_jpeg_match[] = {
> + {
> + .compatible = "nxp,imx8qxp-jpgdec",
> + .data = (void *)MXC_JPEG_DECODE,
> + },
> + {
> + .compatible = "nxp,imx8qxp-jpgenc",
> + .data = (void *)MXC_JPEG_ENCODE,
> + },
> + { },
> +};
> +
> +/*
> + * default configuration stream, 64x64 yuv422
> + * split by JPEG marker, so it's easier to modify & use
> + */
> +static const unsigned char jpeg_soi[] = {
> + 0xFF, 0xD8
> +};
> +
> +static const unsigned char jpeg_app0[] = {
> + 0xFF, 0xE0,
> + 0x00, 0x10, 0x4A, 0x46, 0x49, 0x46, 0x00,
> + 0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x01,
> + 0x00, 0x00
> +};
> +
> +static const unsigned char jpeg_app14[] = {
> + 0xFF, 0xEE,
> + 0x00, 0x0E, 0x41, 0x64, 0x6F, 0x62, 0x65,
> + 0x00, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00
> +};
> +
> +static const unsigned char jpeg_dqt[] = {
> + 0xFF, 0xDB,
> + 0x00, 0x84, 0x00, 0x10, 0x0B, 0x0C, 0x0E,
> + 0x0C, 0x0A, 0x10, 0x0E, 0x0D, 0x0E, 0x12,
> + 0x11, 0x10, 0x13, 0x18, 0x28, 0x1A, 0x18,
> + 0x16, 0x16, 0x18, 0x31, 0x23, 0x25, 0x1D,
> + 0x28, 0x3A, 0x33, 0x3D, 0x3C, 0x39, 0x33,
> + 0x38, 0x37, 0x40, 0x48, 0x5C, 0x4E, 0x40,
> + 0x44, 0x57, 0x45, 0x37, 0x38, 0x50, 0x6D,
> + 0x51, 0x57, 0x5F, 0x62, 0x67, 0x68, 0x67,
> + 0x3E, 0x4D, 0x71, 0x79, 0x70, 0x64, 0x78,
> + 0x5C, 0x65, 0x67, 0x63, 0x01, 0x11, 0x12,
> + 0x12, 0x18, 0x15, 0x18, 0x2F, 0x1A, 0x1A,
> + 0x2F, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
> +};
> +
> +static const unsigned char jpeg_sof_maximal[] = {
> + 0xFF, 0xC0,
> + 0x00, 0x14, 0x08, 0x00, 0x40, 0x00, 0x40,
> + 0x04, 0x01, 0x11, 0x00, 0x02, 0x11, 0x01,
> + 0x03, 0x11, 0x01, 0x04, 0x11, 0x01
> +};
> +
> +static const unsigned char jpeg_dht[] = {
> + 0xFF, 0xC4,
> + 0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01,
> + 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
> + 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
> + 0x09, 0x0A, 0x0B, 0x10, 0x00, 0x02, 0x01,
> + 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05,
> + 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01,
> + 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
> + 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61,
> + 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91,
> + 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15,
> + 0x52, 0xD1, 0xF0, 0x24, 0x33, 0x62, 0x72,
> + 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19,
> + 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A,
> + 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A,
> + 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
> + 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
> + 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67,
> + 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76,
> + 0x77, 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85,
> + 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93,
> + 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
> + 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
> + 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
> + 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4,
> + 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
> + 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
> + 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6,
> + 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3,
> + 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
> + 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01,
> + 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03,
> + 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
> + 0x0B, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04,
> + 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04,
> + 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02,
> + 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06,
> + 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13,
> + 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
> + 0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52,
> + 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16,
> + 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18,
> + 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A,
> + 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43,
> + 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A,
> + 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
> + 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
> + 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77,
> + 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85,
> + 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93,
> + 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
> + 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
> + 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
> + 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4,
> + 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
> + 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
> + 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
> + 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5,
> + 0xF6, 0xF7, 0xF8, 0xF9, 0xFA
> +};
> +
> +static const unsigned char jpeg_dri[] = {
> + 0xFF, 0xDD,
> + 0x00, 0x04, 0x00, 0x20
> +};
> +
> +static const unsigned char jpeg_sos_maximal[] = {
> + 0xFF, 0xDA,
> + 0x00, 0x0C, 0x04, 0x01, 0x00, 0x02, 0x11, 0x03,
> + 0x11, 0x04, 0x11, 0x00, 0x3F, 0x00
> +};
> +
> +static const unsigned char jpeg_eoi[] = {
> + 0xFF, 0xD9
> +};
> +
> +struct mxc_jpeg_src_buf {
> + /* common v4l buffer stuff -- must be first */
> + struct vb2_v4l2_buffer b;
> + struct list_head list;
> +
> + /* mxc-jpeg specific */
> + bool dht_needed;
> + bool jpeg_parse_error;
> +};
> +
> +static inline struct mxc_jpeg_src_buf *vb2_to_mxc_buf(struct vb2_buffer *vb)
> +{
> + return container_of(to_vb2_v4l2_buffer(vb),
> + struct mxc_jpeg_src_buf, b);
> +}
> +
> +static unsigned int debug;
> +module_param(debug, int, 0644);
> +MODULE_PARM_DESC(debug, "Debug level (0-3)");
> +
> +static void _bswap16(u16 *a)
> +{
> + *a = ((*a & 0x00FF) << 8) | ((*a & 0xFF00) >> 8);
> +}
> +
> +static void print_mxc_buf(struct mxc_jpeg_dev *jpeg, struct vb2_buffer *buf,
> + unsigned long len)
> +{
> + unsigned int plane_no;
> + u32 dma_addr;
> + void *vaddr;
> + unsigned long payload;
> +
> + if (debug < 3)
> + return;
> +
> + for (plane_no = 0; plane_no < buf->num_planes; plane_no++) {
> + payload = vb2_get_plane_payload(buf, plane_no);
> + if (len == 0)
> + len = payload;
> + dma_addr = vb2_dma_contig_plane_dma_addr(buf, plane_no);
> + vaddr = vb2_plane_vaddr(buf, plane_no);
> + v4l2_dbg(3, debug, &jpeg->v4l2_dev,
> + "plane %d (vaddr=%p dma_addr=%x payload=%ld):",
> + plane_no, vaddr, dma_addr, payload);
> + print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
> + vaddr, len, false);
> + }
> +}
> +
> +static inline struct mxc_jpeg_ctx *mxc_jpeg_fh_to_ctx(struct v4l2_fh *fh)
> +{
> + return container_of(fh, struct mxc_jpeg_ctx, fh);
> +}
> +
> +static int enum_fmt(struct mxc_jpeg_fmt *mxc_formats, int n,
> + struct v4l2_fmtdesc *f, u32 type)
> +{
> + int i, num = 0;
> +
> + for (i = 0; i < n; ++i) {
> + if (mxc_formats[i].flags == type) {
> + /* index-th format of searched type found ? */
> + if (num == f->index)
> + break;
> + /* Correct type but haven't reached our index yet,
> + * just increment per-type index
> + */
> + ++num;
> + }
> + }
> +
> + /* Format not found */
> + if (i >= n)
> + return -EINVAL;
> +
> + strscpy(f->description, mxc_formats[i].name, sizeof(f->description));
> + f->pixelformat = mxc_formats[i].fourcc;
> +
> + return 0;
> +}
> +
> +static struct mxc_jpeg_fmt *mxc_jpeg_find_format(struct mxc_jpeg_ctx *ctx,
> + u32 pixelformat)
> +{
> + unsigned int k;
> +
> + for (k = 0; k < MXC_JPEG_NUM_FORMATS; k++) {
> + struct mxc_jpeg_fmt *fmt = &mxc_formats[k];
> +
> + if (fmt->fourcc == pixelformat)
> + return fmt;
> + }
> + return NULL;
> +}
> +
> +static enum mxc_jpeg_image_format mxc_jpeg_fourcc_to_imgfmt(u32 fourcc)
> +{
> + switch (fourcc) {
> + case V4L2_PIX_FMT_GREY:
> + return MXC_JPEG_GRAY;
> + case V4L2_PIX_FMT_YUYV:
> + return MXC_JPEG_YUV422;
> + case V4L2_PIX_FMT_NV12:
> + return MXC_JPEG_YUV420;
> + case V4L2_PIX_FMT_YUV24:
> + return MXC_JPEG_YUV444;
> + case V4L2_PIX_FMT_RGB24:
> + return MXC_JPEG_RGB;
> + case V4L2_PIX_FMT_ARGB32:
> + return MXC_JPEG_ARGB;
> + default:
> + return MXC_JPEG_INVALID;
> + }
> +}
> +
> +static int mxc_jpeg_imgfmt_to_fourcc(enum mxc_jpeg_image_format imgfmt,
> + u32 *fourcc)
> +{
> + switch (imgfmt) {
> + case MXC_JPEG_GRAY:
> + *fourcc = V4L2_PIX_FMT_GREY;
> + return 0;
> + case MXC_JPEG_YUV422:
> + *fourcc = V4L2_PIX_FMT_YUYV;
> + return 0;
> + case MXC_JPEG_YUV420:
> + *fourcc = V4L2_PIX_FMT_NV12;
> + return 0;
> + case MXC_JPEG_YUV444:
> + *fourcc = V4L2_PIX_FMT_YUV24;
> + return 0;
> + case MXC_JPEG_RGB:
> + *fourcc = V4L2_PIX_FMT_RGB24;
> + return 0;
> + case MXC_JPEG_ARGB:
> + *fourcc = V4L2_PIX_FMT_ARGB32;
> + return 0;
> + default:
> + return 1;
> + }
> +}
> +
> +static struct mxc_jpeg_q_data *mxc_jpeg_get_q_data(struct mxc_jpeg_ctx *ctx,
> + enum v4l2_buf_type type)
> +{
> + if (V4L2_TYPE_IS_OUTPUT(type))
> + return &ctx->out_q;
> + return &ctx->cap_q;
> +}
> +
> +static void mxc_jpeg_addrs(struct mxc_jpeg_desc *desc,
> + struct vb2_buffer *raw_buf,
> + struct vb2_buffer *jpeg_buf, int offset)
> +{
> + int img_fmt = desc->stm_ctrl & STM_CTRL_IMAGE_FORMAT_MASK;
> +
> + desc->buf_base0 = vb2_dma_contig_plane_dma_addr(raw_buf, 0);
> + desc->buf_base1 = 0;
> + if (img_fmt == STM_CTRL_IMAGE_FORMAT(MXC_JPEG_YUV420)) {
> + WARN_ON(raw_buf->num_planes < 2);
> + desc->buf_base1 = vb2_dma_contig_plane_dma_addr(raw_buf, 1);
> + }
> + desc->stm_bufbase = vb2_dma_contig_plane_dma_addr(jpeg_buf, 0) +
> + offset;
> +}
> +
> +static void notify_eos(struct mxc_jpeg_ctx *ctx)
> +{
> + const struct v4l2_event ev = {
> + .type = V4L2_EVENT_EOS
> + };
> +
> + dev_dbg(ctx->mxc_jpeg->dev, "Notify app event EOS reached");
> + v4l2_event_queue_fh(&ctx->fh, &ev);
> +}
> +
> +static void notify_src_chg(struct mxc_jpeg_ctx *ctx)
> +{
> + const struct v4l2_event ev = {
> + .type = V4L2_EVENT_SOURCE_CHANGE,
> + .u.src_change.changes =
> + V4L2_EVENT_SRC_CH_RESOLUTION,
> + };
> +
> + dev_dbg(ctx->mxc_jpeg->dev, "Notify app event SRC_CH_RESOLUTION");
> + v4l2_event_queue_fh(&ctx->fh, &ev);
> +}
> +
> +static int mxc_get_free_slot(struct mxc_jpeg_slot_data slot_data[], int n)
> +{
> + int free_slot = 0;
> +
> + while (slot_data[free_slot].used && free_slot < n)
> + free_slot++;
> +
> + return free_slot; /* >=n when there are no more free slots */
> +}
> +
> +static bool mxc_jpeg_alloc_slot_data(struct mxc_jpeg_dev *jpeg,
> + unsigned int slot)
> +{
> + struct mxc_jpeg_desc *desc;
> + struct mxc_jpeg_desc *cfg_desc;
> + void *cfg_stm;
> +
> + if (jpeg->slot_data[slot].desc)
> + goto skip_alloc; /* already allocated, reuse it */
> +
> + /* allocate descriptor for decoding/encoding phase */
> + desc = dma_alloc_coherent(jpeg->dev,
> + sizeof(struct mxc_jpeg_desc),
> + &jpeg->slot_data[slot].desc_handle,
> + GFP_ATOMIC);
> + if (!desc)
> + goto err;
> + jpeg->slot_data[slot].desc = desc;
> +
> + /* allocate descriptor for configuration phase (encoder only) */
> + cfg_desc = dma_alloc_coherent(jpeg->dev,
> + sizeof(struct mxc_jpeg_desc),
> + &jpeg->slot_data[slot].cfg_desc_handle,
> + GFP_ATOMIC);
> + if (!cfg_desc)
> + goto err;
> + jpeg->slot_data[slot].cfg_desc = cfg_desc;
> +
> + /* allocate configuration stream */
> + cfg_stm = dma_alloc_coherent(jpeg->dev,
> + MXC_JPEG_MAX_CFG_STREAM,
> + &jpeg->slot_data[slot].cfg_stream_handle,
> + GFP_ATOMIC);
> + if (!cfg_stm)
> + goto err;
> + jpeg->slot_data[slot].cfg_stream_vaddr = cfg_stm;
> +
> +skip_alloc:
> + jpeg->slot_data[slot].used = true;
> +
> + return true;
> +err:
> + dev_err(jpeg->dev, "Could not allocate descriptors for slot %d", slot);
> +
> + return false;
> +}
> +
> +static void mxc_jpeg_free_slot_data(struct mxc_jpeg_dev *jpeg,
> + unsigned int slot)
> +{
> + if (slot >= MXC_MAX_SLOTS) {
> + dev_err(jpeg->dev, "Invalid slot %d, nothing to free.", slot);
> + return;
> + }
> +
> + /* free descriptor for decoding/encoding phase */
> + dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
> + jpeg->slot_data[slot].desc,
> + jpeg->slot_data[slot].desc_handle);
> +
> + /* free descriptor for encoder configuration phase / decoder DHT */
> + dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
> + jpeg->slot_data[slot].cfg_desc,
> + jpeg->slot_data[slot].cfg_desc_handle);
> +
> + /* free configuration stream */
> + dma_free_coherent(jpeg->dev, MXC_JPEG_MAX_CFG_STREAM,
> + jpeg->slot_data[slot].cfg_stream_vaddr,
> + jpeg->slot_data[slot].cfg_stream_handle);
> +
> + jpeg->slot_data[slot].used = false;
> +}
> +
> +static irqreturn_t mxc_jpeg_dec_irq(int irq, void *priv)
> +{
> + struct mxc_jpeg_dev *jpeg = priv;
> + struct mxc_jpeg_ctx *ctx;
> + void __iomem *reg = jpeg->base_reg;
> + struct device *dev = jpeg->dev;
> + struct vb2_v4l2_buffer *src_buf, *dst_buf;
> + struct mxc_jpeg_src_buf *jpeg_src_buf;
> + enum vb2_buffer_state buf_state;
> + u32 dec_ret, com_status;
> + unsigned long payload;
> + struct mxc_jpeg_q_data *q_data;
> + enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> + unsigned int slot;
> +
> + spin_lock(&jpeg->hw_lock);
> +
> + com_status = readl(reg + COM_STATUS);
> + slot = COM_STATUS_CUR_SLOT(com_status);
> + dev_dbg(dev, "Irq %d on slot %d.\n", irq, slot);
> +
> + ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev);
> + if (!ctx) {
> + dev_err(dev,
> + "Instance released before the end of transaction.\n");
> + /* soft reset only resets internal state, not registers */
> + mxc_jpeg_sw_reset(reg);
> + /* clear all interrupts */
> + writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS));
> + goto job_unlock;
> + }
> +
> + if (slot != ctx->slot) {
> + /* TODO investigate when adding multi-instance support */
> + dev_warn(dev, "IRQ slot %d != context slot %d.\n",
> + slot, ctx->slot);
> + goto job_unlock;
> + }
> +
> + dec_ret = readl(reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS));
> + writel(dec_ret, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS)); /* w1c */
> +
> + dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> + src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> + jpeg_src_buf = vb2_to_mxc_buf(&src_buf->vb2_buf);
> +
> + if (dec_ret & SLOT_STATUS_ENC_CONFIG_ERR) {
> + u32 ret = readl(reg + CAST_STATUS12);
> +
> + dev_err(dev, "Encoder/decoder error, status=0x%08x", ret);
> + mxc_jpeg_sw_reset(reg);
> + buf_state = VB2_BUF_STATE_ERROR;
> + goto buffers_done;
> + }
> +
> + if (!(dec_ret & SLOT_STATUS_FRMDONE))
> + goto job_unlock;
> +
> + if (jpeg->mode == MXC_JPEG_ENCODE &&
> + ctx->enc_state == MXC_JPEG_ENC_CONF) {
> + ctx->enc_state = MXC_JPEG_ENCODING;
> + dev_dbg(dev, "Encoder config finished. Start encoding...\n");
> + mxc_jpeg_enc_mode_go(dev, reg);
> + goto job_unlock;
> + }
> + if (jpeg->mode == MXC_JPEG_DECODE && jpeg_src_buf->dht_needed) {
> + jpeg_src_buf->dht_needed = false;
> + dev_dbg(dev, "Decoder DHT cfg finished. Start decoding...\n");
> + goto job_unlock;
> + }
> + if (jpeg->mode == MXC_JPEG_ENCODE) {
> + payload = readl(reg + MXC_SLOT_OFFSET(slot, SLOT_BUF_PTR));
> + vb2_set_plane_payload(&dst_buf->vb2_buf, 0, payload);
> + dev_dbg(dev, "Encoding finished, payload size: %ld\n",
> + payload);
> + } else {
> + q_data = mxc_jpeg_get_q_data(ctx, cap_type);
> + payload = q_data->sizeimage[0];
> + vb2_set_plane_payload(&dst_buf->vb2_buf, 0, payload);
> + vb2_set_plane_payload(&dst_buf->vb2_buf, 1, 0);
> + if (q_data->fmt->colplanes == 2) {
> + payload = q_data->sizeimage[1];
> + vb2_set_plane_payload(&dst_buf->vb2_buf, 1, payload);
> + }
> + dev_dbg(dev, "Decoding finished, payload size: %ld + %ld\n",
> + vb2_get_plane_payload(&dst_buf->vb2_buf, 0),
> + vb2_get_plane_payload(&dst_buf->vb2_buf, 1));
> + }
> +
> + /* short preview of the results */
> + dev_dbg(dev, "src_buf preview: ");
> + print_mxc_buf(jpeg, &src_buf->vb2_buf, 32);
> + dev_dbg(dev, "dst_buf preview: ");
> + print_mxc_buf(jpeg, &dst_buf->vb2_buf, 32);
> + buf_state = VB2_BUF_STATE_DONE;
> +
> +buffers_done:
> + jpeg->slot_data[slot].used = false; /* unused, but don't free */
> + v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
> + v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
> + v4l2_m2m_buf_done(src_buf, buf_state);
> + v4l2_m2m_buf_done(dst_buf, buf_state);
> + spin_unlock(&jpeg->hw_lock);
> + v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
> + return IRQ_HANDLED;
> +job_unlock:
> + spin_unlock(&jpeg->hw_lock);
> + return IRQ_HANDLED;
> +}
> +
> +static int mxc_jpeg_fixup_sof(struct mxc_jpeg_sof *sof,
> + u32 fourcc,
> + u16 w, u16 h)
> +{
> + int sof_length;
> +
> + sof->precision = 8; /* TODO allow 8/12 bit precision*/
> + sof->height = h;
> + _bswap16(&sof->height);
> + sof->width = w;
> + _bswap16(&sof->width);
> +
> + switch (fourcc) {
> + case V4L2_PIX_FMT_NV12:
> + sof->components_no = 3;
> + sof->comp[0].v = 0x2;
> + sof->comp[0].h = 0x2;
> + break;
> + case V4L2_PIX_FMT_YUYV:
> + sof->components_no = 3;
> + sof->comp[0].v = 0x1;
> + sof->comp[0].h = 0x2;
> + break;
> + case V4L2_PIX_FMT_YUV24:
> + case V4L2_PIX_FMT_RGB24:
> + default:
> + sof->components_no = 3;
> + break;
> + case V4L2_PIX_FMT_ARGB32:
> + sof->components_no = 4;
> + break;
> + case V4L2_PIX_FMT_GREY:
> + sof->components_no = 1;
> + break;
> + }
> + sof_length = 8 + 3 * sof->components_no;
> + sof->length = sof_length;
> + _bswap16(&sof->length);
> +
> + return sof_length; /* not swaped */
> +}
> +
> +static int mxc_jpeg_fixup_sos(struct mxc_jpeg_sos *sos,
> + u32 fourcc)
> +{
> + int sos_length;
> + u8 *sof_u8 = (u8 *)sos;
> +
> + switch (fourcc) {
> + case V4L2_PIX_FMT_NV12:
> + sos->components_no = 3;
> + break;
> + case V4L2_PIX_FMT_YUYV:
> + sos->components_no = 3;
> + break;
> + case V4L2_PIX_FMT_YUV24:
> + case V4L2_PIX_FMT_RGB24:
> + default:
> + sos->components_no = 3;
> + break;
> + case V4L2_PIX_FMT_ARGB32:
> + sos->components_no = 4;
> + break;
> + case V4L2_PIX_FMT_GREY:
> + sos->components_no = 1;
> + break;
> + }
> + sos_length = 6 + 2 * sos->components_no;
> + sos->length = sos_length;
> + _bswap16(&sos->length);
> +
> + /* SOS ignorable bytes, not so ignorable after all */
> + sof_u8[sos_length - 1] = 0x0;
> + sof_u8[sos_length - 2] = 0x3f;
> + sof_u8[sos_length - 3] = 0x0;
> +
> + return sos_length; /* not swaped */
> +}
> +
> +static unsigned int mxc_jpeg_setup_cfg_stream(void *cfg_stream_vaddr,
> + u32 fourcc,
> + u16 w, u16 h)
> +{
> + unsigned int offset = 0;
> + u8 *cfg = (u8 *)cfg_stream_vaddr;
> + struct mxc_jpeg_sof *sof;
> + struct mxc_jpeg_sos *sos;
> +
> + memcpy(cfg + offset, jpeg_soi, ARRAY_SIZE(jpeg_soi));
> + offset += ARRAY_SIZE(jpeg_soi);
> +
> + if (fourcc == V4L2_PIX_FMT_RGB24 ||
> + fourcc == V4L2_PIX_FMT_ARGB32) {
> + memcpy(cfg + offset, jpeg_app14, sizeof(jpeg_app14));
> + offset += sizeof(jpeg_app14);
> + } else {
> + memcpy(cfg + offset, jpeg_app0, sizeof(jpeg_app0));
> + offset += sizeof(jpeg_app0);
> + }
> +
> + memcpy(cfg + offset, jpeg_dqt, sizeof(jpeg_dqt));
> + offset += sizeof(jpeg_dqt);
> +
> + memcpy(cfg + offset, jpeg_sof_maximal, sizeof(jpeg_sof_maximal));
> + offset += 2; /* skip marker ID */
> + sof = (struct mxc_jpeg_sof *)(cfg + offset);
> + offset += mxc_jpeg_fixup_sof(sof, fourcc, w, h);
> +
> + memcpy(cfg + offset, jpeg_dht, sizeof(jpeg_dht));
> + offset += sizeof(jpeg_dht);
> +
> + memcpy(cfg + offset, jpeg_dri, sizeof(jpeg_dri));
> + offset += sizeof(jpeg_dri);
> +
> + memcpy(cfg + offset, jpeg_sos_maximal, sizeof(jpeg_sos_maximal));
> + offset += 2; /* skip marker ID */
> + sos = (struct mxc_jpeg_sos *)(cfg + offset);
> + offset += mxc_jpeg_fixup_sos(sos, fourcc);
> +
> + memcpy(cfg + offset, jpeg_eoi, sizeof(jpeg_eoi));
> + offset += sizeof(jpeg_eoi);
> +
> + return offset;
> +}
> +
> +static void mxc_jpeg_config_dec_desc(struct vb2_buffer *out_buf,
> + struct mxc_jpeg_ctx *ctx,
> + struct vb2_buffer *src_buf,
> + struct vb2_buffer *dst_buf)
> +{
> + enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> + struct mxc_jpeg_q_data *q_data_cap;
> + enum mxc_jpeg_image_format img_fmt;
> + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> + void __iomem *reg = jpeg->base_reg;
> + unsigned int slot = ctx->slot;
> + struct mxc_jpeg_desc *desc = jpeg->slot_data[slot].desc;
> + struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data[slot].cfg_desc;
> + dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
> + dma_addr_t cfg_desc_handle = jpeg->slot_data[slot].cfg_desc_handle;
> + dma_addr_t cfg_stream_handle = jpeg->slot_data[slot].cfg_stream_handle;
> + unsigned int *cfg_size = &jpeg->slot_data[slot].cfg_stream_size;
> + void *cfg_stream_vaddr = jpeg->slot_data[slot].cfg_stream_vaddr;
> + struct mxc_jpeg_src_buf *jpeg_src_buf;
> +
> + jpeg_src_buf = vb2_to_mxc_buf(src_buf);
> +
> + /* setup the decoding descriptor */
> + desc->next_descpt_ptr = 0; /* end of chain */
> + q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
> + desc->imgsize = q_data_cap->w_adjusted << 16 | q_data_cap->h_adjusted;
> + img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data_cap->fmt->fourcc);
> + desc->stm_ctrl &= ~STM_CTRL_IMAGE_FORMAT(0xF); /* clear image format */
> + desc->stm_ctrl |= STM_CTRL_IMAGE_FORMAT(img_fmt);
> + desc->line_pitch = q_data_cap->bytesperline[0];
> + mxc_jpeg_addrs(desc, dst_buf, src_buf, 0);
> + mxc_jpeg_set_bufsize(desc, ALIGN(vb2_plane_size(src_buf, 0), 1024));
> + print_descriptor_info(jpeg->dev, desc);
> +
> + if (!jpeg_src_buf->dht_needed) {
> + /* validate the decoding descriptor */
> + mxc_jpeg_set_desc(desc_handle, reg, slot);
> + return;
> + }
> +
> + /*
> + * if a default huffman table is needed, use the config descriptor to
> + * inject a DHT, by chaining it before the decoding descriptor
> + */
> + *cfg_size = mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
> + V4L2_PIX_FMT_YUYV,
> + MXC_JPEG_MIN_WIDTH,
> + MXC_JPEG_MIN_HEIGHT);
> + cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
> + cfg_desc->buf_base0 = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
> + cfg_desc->buf_base1 = 0;
> + cfg_desc->imgsize = MXC_JPEG_MIN_WIDTH << 16;
> + cfg_desc->imgsize |= MXC_JPEG_MIN_HEIGHT;
> + cfg_desc->line_pitch = MXC_JPEG_MIN_WIDTH * 2;
> + cfg_desc->stm_ctrl = STM_CTRL_IMAGE_FORMAT(MXC_JPEG_YUV422);
> + cfg_desc->stm_bufbase = cfg_stream_handle;
> + cfg_desc->stm_bufsize = ALIGN(*cfg_size, 1024);
> + print_descriptor_info(jpeg->dev, cfg_desc);
> +
> + /* validate the configuration descriptor */
> + mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
> +}
> +
> +static void mxc_jpeg_config_enc_desc(struct vb2_buffer *out_buf,
> + struct mxc_jpeg_ctx *ctx,
> + struct vb2_buffer *src_buf,
> + struct vb2_buffer *dst_buf)
> +{
> + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> + void __iomem *reg = jpeg->base_reg;
> + unsigned int slot = ctx->slot;
> + struct mxc_jpeg_desc *desc = jpeg->slot_data[slot].desc;
> + struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data[slot].cfg_desc;
> + dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
> + dma_addr_t cfg_desc_handle = jpeg->slot_data[slot].cfg_desc_handle;
> + void *cfg_stream_vaddr = jpeg->slot_data[slot].cfg_stream_vaddr;
> + struct mxc_jpeg_q_data *q_data;
> + enum mxc_jpeg_image_format img_fmt;
> + int w, h;
> +
> + q_data = mxc_jpeg_get_q_data(ctx, src_buf->vb2_queue->type);
> +
> + jpeg->slot_data[slot].cfg_stream_size =
> + mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
> + q_data->fmt->fourcc,
> + q_data->w_adjusted,
> + q_data->h_adjusted);
> +
> + /* chain the config descriptor with the encoding descriptor */
> + cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
> +
> + cfg_desc->buf_base0 = jpeg->slot_data[slot].cfg_stream_handle;
> + cfg_desc->buf_base1 = 0;
> + cfg_desc->line_pitch = 0;
> + cfg_desc->stm_bufbase = 0; /* no output expected */
> + cfg_desc->stm_bufsize = 0x0;
> + cfg_desc->imgsize = 0;
> + cfg_desc->stm_ctrl = STM_CTRL_CONFIG_MOD(1);
> +
> + desc->next_descpt_ptr = 0; /* end of chain */
> +
> + /* use adjusted resolution for CAST IP job */
> + w = q_data->w_adjusted;
> + h = q_data->h_adjusted;
> + mxc_jpeg_set_res(desc, w, h);
> + mxc_jpeg_set_line_pitch(desc, w * (q_data->fmt->depth / 8));
> + mxc_jpeg_set_bufsize(desc, desc->line_pitch * h);
> + img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data->fmt->fourcc);
> + if (img_fmt == MXC_JPEG_INVALID)
> + dev_err(jpeg->dev, "No valid image format detected\n");
> + desc->stm_ctrl = STM_CTRL_CONFIG_MOD(0) |
> + STM_CTRL_IMAGE_FORMAT(img_fmt);
> + mxc_jpeg_addrs(desc, src_buf, dst_buf, 0);
> + dev_dbg(jpeg->dev, "cfg_desc - 0x%llx:\n", cfg_desc_handle);
> + print_descriptor_info(jpeg->dev, cfg_desc);
> + dev_dbg(jpeg->dev, "enc desc - 0x%llx:\n", desc_handle);
> + print_descriptor_info(jpeg->dev, desc);
> + print_wrapper_info(jpeg->dev, reg);
> + print_cast_status(jpeg->dev, reg, MXC_JPEG_ENCODE);
> +
> + /* validate the configuration descriptor */
> + mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
> +}
> +
> +static void mxc_jpeg_device_run(void *priv)
> +{
> + struct mxc_jpeg_ctx *ctx = priv;
> + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> + void __iomem *reg = jpeg->base_reg;
> + struct device *dev = jpeg->dev;
> + struct vb2_v4l2_buffer *src_buf, *dst_buf;
> + unsigned long flags;
> + struct mxc_jpeg_q_data *q_data_cap, *q_data_out;
> + struct mxc_jpeg_src_buf *jpeg_src_buf;
> +
> + spin_lock_irqsave(&ctx->mxc_jpeg->hw_lock, flags);
> + src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> + dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> + if (!src_buf || !dst_buf) {
> + dev_err(dev, "Null src or dst buf\n");
> + goto end;
> + }
> +
> + q_data_cap = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> + if (!q_data_cap)
> + goto end;
> + q_data_out = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
> + if (!q_data_out)
> + goto end;
> + src_buf->sequence = q_data_out->sequence++;
> + dst_buf->sequence = q_data_cap->sequence++;
> +
> + v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
> +
> + jpeg_src_buf = vb2_to_mxc_buf(&src_buf->vb2_buf);
> + if (jpeg_src_buf->jpeg_parse_error) {
> + jpeg->slot_data[ctx->slot].used = false;
> + v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
> + v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
> + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
> + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
> + spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
> + v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
> +
> + return;
> + }
> +
> + /*
> + * TODO: this reset should be removed, once we figure out
> + * how to overcome hardware issues both on encoder and decoder
> + */
> + mxc_jpeg_sw_reset(reg);
> + mxc_jpeg_enable(reg);
> + mxc_jpeg_set_l_endian(reg, 1);
> +
> + ctx->slot = mxc_get_free_slot(jpeg->slot_data, MXC_MAX_SLOTS);
> + if (ctx->slot >= MXC_MAX_SLOTS) {
> + dev_err(dev, "No more free slots\n");
> + goto end;
> + }
> + if (!mxc_jpeg_alloc_slot_data(jpeg, ctx->slot)) {
> + dev_err(dev, "Canot allocate slot data\n");
> + goto end;
> + }
> +
> + mxc_jpeg_enable_slot(reg, ctx->slot);
> + mxc_jpeg_enable_irq(reg, ctx->slot);
> +
> + if (jpeg->mode == MXC_JPEG_ENCODE) {
> + dev_dbg(dev, "Encoding on slot %d\n", ctx->slot);
> + ctx->enc_state = MXC_JPEG_ENC_CONF;
> + mxc_jpeg_config_enc_desc(&dst_buf->vb2_buf, ctx,
> + &src_buf->vb2_buf, &dst_buf->vb2_buf);
> + mxc_jpeg_enc_mode_conf(dev, reg); /* start config phase */
> + } else {
> + dev_dbg(dev, "Decoding on slot %d\n", ctx->slot);
> + print_mxc_buf(jpeg, &src_buf->vb2_buf, 0);
> + mxc_jpeg_config_dec_desc(&dst_buf->vb2_buf, ctx,
> + &src_buf->vb2_buf, &dst_buf->vb2_buf);
> + mxc_jpeg_dec_mode_go(dev, reg);
> + }
> +end:
> + spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
> +}
> +
> +static int mxc_jpeg_try_decoder_cmd(struct file *file, void *fh,
> + struct v4l2_decoder_cmd *c)
> +{
> + if (c->cmd != V4L2_DEC_CMD_STOP && c->cmd != V4L2_DEC_CMD_START)
> + return -EINVAL;
> +
> + c->flags = 0;
> +
> + if (c->cmd == V4L2_DEC_CMD_START) {
> + c->start.speed = 0;
> + c->start.format = 0;
> + }
> +
> + return 0;
> +}
> +
> +static int mxc_jpeg_decoder_cmd(struct file *file, void *priv,
> + struct v4l2_decoder_cmd *cmd)
> +{
> + struct v4l2_fh *fh = file->private_data;
> + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
> + struct device *dev = ctx->mxc_jpeg->dev;
> + int ret;
> +
> + ret = mxc_jpeg_try_decoder_cmd(file, fh, cmd);
> + if (ret < 0)
> + return ret;
> +
> + /* Ignore decoder command silently in encoder context */
> + if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE)
> + return 0;
This is wrong, this shouldn't be silent.
I recommend that you use v4l2_disable_ioctl() to disable the VIDIOC_(TRY)_ENCODER_CMD
ioctls for the decoder and the VIDIOC_(TRY)_DECODER_CMD ioctls for the encoder.
That way you can drop this test as well.
And it also fixes a bug where TRY_DECODER_CMD is allowed for an encoder, but not
the DECODER_CMD ioctl. I've improved v4l2-compliance as well since it should have
failed on this.
> +
> + if (cmd->cmd == V4L2_DEC_CMD_STOP) {
> + dev_dbg(dev, "Received V4L2_DEC_CMD_STOP");
> + if (v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx) == 0) {
> + /* No more src bufs, notify app EOS */
> + notify_eos(ctx);
> + } else {
> + /* will send EOS later*/
> + ctx->stopping = 1;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int mxc_jpeg_try_encoder_cmd(struct file *file, void *fh,
> + struct v4l2_encoder_cmd *c)
> +{
> + if (c->cmd != V4L2_ENC_CMD_STOP && c->cmd != V4L2_ENC_CMD_START)
> + return -EINVAL;
> +
> + c->flags = 0;
> +
> + return 0;
> +}
> +
> +static int mxc_jpeg_encoder_cmd(struct file *file, void *priv,
> + struct v4l2_encoder_cmd *cmd)
> +{
> + struct v4l2_fh *fh = file->private_data;
> + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
> + struct device *dev = ctx->mxc_jpeg->dev;
> + int ret;
> +
> + ret = mxc_jpeg_try_encoder_cmd(file, fh, cmd);
> + if (ret < 0)
> + return ret;
> +
> + /* Ignore encoder command silently in decoder context */
> + if (ctx->mxc_jpeg->mode != MXC_JPEG_ENCODE)
> + return 0;
Same comment as above: drop this test and use v4l2_disable_ioctl()
instead.
> +
> + if (cmd->cmd == V4L2_ENC_CMD_STOP) {
> + dev_dbg(dev, "Received V4L2_ENC_CMD_STOP");
> + if (v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx) == 0) {
> + /* No more src bufs, notify app EOS */
> + notify_eos(ctx);
> + } else {
> + /* will send EOS later*/
> + ctx->stopping = 1;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int mxc_jpeg_queue_setup(struct vb2_queue *q,
> + unsigned int *nbuffers,
> + unsigned int *nplanes,
> + unsigned int sizes[],
> + struct device *alloc_ctxs[])
> +{
> + struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
> + struct mxc_jpeg_q_data *q_data = NULL;
> + int i;
> +
> + q_data = mxc_jpeg_get_q_data(ctx, q->type);
> + if (!q_data)
> + return -EINVAL;
> +
> + /* Handle CREATE_BUFS situation - *nplanes != 0 */
> + if (*nplanes) {
> + for (i = 0; i < *nplanes; i++) {
> + if (sizes[i] < q_data->sizeimage[i])
> + return -EINVAL;
> + }
You need to 'return 0;' here.
Otherwise you will overwrite the sizes array below, that's not
what you want.
> + }
> +
> + /* Handle REQBUFS situation */
> + *nplanes = q_data->fmt->colplanes;
> + for (i = 0; i < *nplanes; i++)
> + sizes[i] = q_data->sizeimage[i];
> +
> + return 0;
> +}
> +
> +static int mxc_jpeg_start_streaming(struct vb2_queue *q, unsigned int count)
> +{
> + struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
> + struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, q->type);
> +
> + dev_dbg(ctx->mxc_jpeg->dev, "Start streaming ctx=%p", ctx);
> + q_data->sequence = 0;
> +
> + return 0;
> +}
> +
> +static void release_active_buffers(struct vb2_queue *q,
> + enum vb2_buffer_state s)
> +{
> + struct vb2_buffer *vb;
> +
> + if (!list_empty(&q->queued_list))
> + list_for_each_entry(vb, &q->queued_list, queued_entry) {
> + if (vb->state == VB2_BUF_STATE_ACTIVE)
> + vb2_buffer_done(vb, s);
> + }
This isn't right since you are touching internal vb2_queue data structures.
See vim2m_stop_streaming() from vim2m.c on how to do this. Minus the
call to v4l2_ctrl_request_complete() since this driver doesn't use requests.
> +}
> +
> +static void mxc_jpeg_stop_streaming(struct vb2_queue *q)
> +{
> + struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
> +
> + dev_dbg(ctx->mxc_jpeg->dev, "Stop streaming ctx=%p", ctx);
> +
> + /* Release all active buffers */
> + release_active_buffers(q, VB2_BUF_STATE_ERROR);
Just fold release_active_buffers() in here since it is a bit pointless to
have that as a separate function.
> +}
> +
> +struct mxc_jpeg_stream {
> + u8 *addr;
> + u32 loc;
> + u32 end;
> +};
> +
> +static int get_byte(struct mxc_jpeg_stream *stream)
> +{
> + int ret;
> +
> + if (stream->loc >= stream->end)
> + return -1;
> + ret = stream->addr[stream->loc];
> + stream->loc++;
> + return ret;
> +}
> +
> +static int get_sof(struct device *dev,
> + struct mxc_jpeg_stream *stream,
> + struct mxc_jpeg_sof *sof)
> +{
> + int i;
> +
> + if (stream->loc + sizeof(struct mxc_jpeg_sof) >= stream->end)
> + return -1;
> + memcpy(sof, &stream->addr[stream->loc], sizeof(struct mxc_jpeg_sof));
> + _bswap16(&sof->length);
> + _bswap16(&sof->height);
> + _bswap16(&sof->width);
> + dev_dbg(dev, "JPEG SOF: precision=%d\n", sof->precision);
> + dev_dbg(dev, "JPEG SOF: height=%d, width=%d\n",
> + sof->height, sof->width);
> + for (i = 0; i < sof->components_no; i++) {
> + dev_dbg(dev, "JPEG SOF: comp_id=%d, H=0x%x, V=0x%x\n",
> + sof->comp[i].id, sof->comp[i].v, sof->comp[i].h);
> + }
> + return 0;
> +}
> +
> +static int mxc_jpeg_valid_comp_id(struct device *dev,
> + struct mxc_jpeg_sof *sof,
> + struct mxc_jpeg_sos *sos)
> +{
> + int valid = 1;
> + int i;
> +
> + /*
> + * there's a limitation in the IP that the component IDs must be
> + * between 0..4, if they are not, let's patch them
> + */
> + for (i = 0; i < sof->components_no; i++)
> + if (sof->comp[i].id > MXC_JPEG_MAX_COMPONENTS) {
> + valid = 0;
> + dev_err(dev, "Component %d has invalid ID: %d",
> + i, sof->comp[i].id);
> + }
> + if (!valid)
> + /* patch all comp IDs if at least one is invalid */
> + for (i = 0; i < sof->components_no; i++) {
> + dev_warn(dev, "Component %d ID patched to: %d",
> + i, i + 1);
> + sof->comp[i].id = i + 1;
> + sos->comp[i].id = i + 1;
> + }
> +
> + return valid;
> +}
> +
> +static enum mxc_jpeg_image_format
> +mxc_jpeg_get_image_format(struct device *dev, const struct mxc_jpeg_sof *sof)
> +{
> + if (sof->components_no == 1) {
> + dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_GRAY\n");
> + return MXC_JPEG_GRAY;
> + }
> + if (sof->components_no == 3) {
> + if (sof->comp[0].h == 2 && sof->comp[0].v == 2 &&
> + sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> + sof->comp[2].h == 1 && sof->comp[2].v == 1){
> + dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV420\n");
> + return MXC_JPEG_YUV420;
> + }
> + if (sof->comp[0].h == 2 && sof->comp[0].v == 1 &&
> + sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> + sof->comp[2].h == 1 && sof->comp[2].v == 1){
> + dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV422\n");
> + return MXC_JPEG_YUV422;
> + }
> + if (sof->comp[0].h == 1 && sof->comp[0].v == 1 &&
> + sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> + sof->comp[2].h == 1 && sof->comp[2].v == 1){
> + dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_YUV444\n");
> + return MXC_JPEG_YUV444;
> + }
> + }
> + if (sof->components_no == 4) {
> + if (sof->comp[0].h == 1 && sof->comp[0].v == 1 &&
> + sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> + sof->comp[2].h == 1 && sof->comp[2].v == 1 &&
> + sof->comp[3].h == 1 && sof->comp[3].v == 1){
> + /* this is not tested */
> + dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_ARGB\n");
> + return MXC_JPEG_ARGB;
> + }
> + }
> + dev_err(dev, "Could not identify image format\n");
> + return MXC_JPEG_INVALID;
> +}
> +
> +static void mxc_jpeg_bytesperline(struct mxc_jpeg_q_data *q,
> + u32 precision)
> +{
> + /* Bytes distance between the leftmost pixels in two adjacent lines */
> + if (q->fmt->fourcc == V4L2_PIX_FMT_JPEG) {
> + /* bytesperline unused for compressed formats */
> + q->bytesperline[0] = 0;
> + q->bytesperline[1] = 0;
> + } else if (q->fmt->fourcc == V4L2_PIX_FMT_NV12) {
> + /* When the image format is planar the bytesperline value
> + * applies to the first plane and is divided by the same factor
> + * as the width field for the other planes
> + */
> + q->bytesperline[0] = q->w * (precision / 8) *
> + (q->fmt->depth / 8);
> + q->bytesperline[1] = q->bytesperline[0];
> + } else {
> + /* single plane formats */
> + q->bytesperline[0] = q->w * (precision / 8) *
> + (q->fmt->depth / 8);
> + q->bytesperline[1] = 0;
> + }
> +}
> +
> +static void mxc_jpeg_sizeimage(struct mxc_jpeg_q_data *q)
> +{
> + if (q->fmt->fourcc == V4L2_PIX_FMT_JPEG) {
> + /* if no sizeimage from user, assume worst jpeg compression */
> + if (!q->sizeimage[0])
> + q->sizeimage[0] = 6 * q->w * q->h;
> + q->sizeimage[1] = 0;
> +
> + if (q->sizeimage[0] > MXC_JPEG_MAX_SIZEIMAGE)
> + q->sizeimage[0] = MXC_JPEG_MAX_SIZEIMAGE;
> +
> + /* jpeg stream size must be multiple of 1K */
> + q->sizeimage[0] = ALIGN(q->sizeimage[0], 1024);
> + } else {
> + q->sizeimage[0] = q->bytesperline[0] * q->h;
> + q->sizeimage[1] = 0;
> + if (q->fmt->fourcc == V4L2_PIX_FMT_NV12)
> + q->sizeimage[1] = q->sizeimage[0] / 2;
> + }
> +}
> +
> +static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
> + u8 *src_addr, u32 size, bool *dht_needed)
> +{
> + struct device *dev = ctx->mxc_jpeg->dev;
> + struct mxc_jpeg_q_data *q_data_out, *q_data_cap;
> + enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> + struct mxc_jpeg_stream stream;
> + bool notfound = true;
> + bool app14 = false;
> + bool src_chg = false;
> + u8 app14_transform = 0;
> + struct mxc_jpeg_sof sof, *psof = NULL;
> + struct mxc_jpeg_sos *psos = NULL;
> + int byte;
> + u8 *next = NULL;
> + enum mxc_jpeg_image_format img_fmt;
> + u32 fourcc;
> +
> + memset(&sof, 0, sizeof(struct mxc_jpeg_sof));
> + stream.addr = src_addr;
> + stream.end = size;
> + stream.loc = 0;
> + *dht_needed = true;
> +
> + /* check stream starts with SOI */
> + byte = get_byte(&stream);
> + if (byte == -1 || byte != 0xFF)
> + return -EINVAL;
> + byte = get_byte(&stream);
> + if (byte == -1 || byte != 0xD8)
> + return -EINVAL;
> +
> + while (notfound) {
> + byte = get_byte(&stream);
> + if (byte == -1)
> + return -EINVAL;
> + if (byte != 0xff)
> + continue;
> + do {
> + byte = get_byte(&stream);
> + } while (byte == 0xff);
> + if (byte == -1)
> + return false;
> + if (byte == 0)
> + continue;
> + switch (byte) {
> + case DHT:
> + /* DHT marker present, no need to inject default one */
> + *dht_needed = false;
> + break;
> + case SOF2: /* Progressive DCF frame definition */
> + dev_err(dev,
> + "Progressive JPEG not supported by hardware");
> + return -EINVAL;
> + case SOF1: /* Extended sequential DCF frame definition */
> + case SOF0: /* Baseline sequential DCF frame definition */
> + if (get_sof(dev, &stream, &sof) == -1)
> + break;
> + next = stream.addr + stream.loc;
> + psof = (struct mxc_jpeg_sof *)next;
> + break;
> + case SOS:
> + next = stream.addr + stream.loc;
> + psos = (struct mxc_jpeg_sos *)next;
> + notfound = false;
> + break;
> + case APP14:
> + app14 = true;
> + /*
> + * Application Data Syntax is:
> + * 2 bytes(APPn:0xFF,0xEE), 2 bytes(Lp), Ap1...ApLp-2
> + * The transform flag is in Ap12
> + * stream.loc is now on APPn-0xEE byte
> + */
> + app14_transform = *(stream.addr + stream.loc + 12 + 1);
> + break;
> + default:
> + notfound = true;
> + }
> + }
> + q_data_out = mxc_jpeg_get_q_data(ctx,
> + V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
> + if (q_data_out->w == 0 && q_data_out->h == 0) {
> + dev_warn(dev, "Invalid user resolution 0x0");
> + dev_warn(dev, "Keeping resolution from JPEG: %dx%d",
> + sof.width, sof.height);
> + q_data_out->w = sof.width;
> + q_data_out->h = sof.height;
> + } else if (sof.width != q_data_out->w || sof.height != q_data_out->h) {
> + dev_err(dev,
> + "Resolution mismatch: %dx%d (JPEG) versus %dx%d(user)",
> + sof.width, sof.height, q_data_out->w, q_data_out->h);
> + return -EINVAL;
> + }
> + if (sof.width % 8 != 0 || sof.height % 8 != 0) {
> + dev_err(dev, "JPEG width or height not multiple of 8: %dx%d\n",
> + sof.width, sof.height);
> + return -EINVAL;
> + }
> + if (sof.width > MXC_JPEG_MAX_WIDTH ||
> + sof.height > MXC_JPEG_MAX_HEIGHT) {
> + dev_err(dev, "JPEG width or height should be <= 8192: %dx%d\n",
> + sof.width, sof.height);
> + return -EINVAL;
> + }
> + if (sof.width < MXC_JPEG_MIN_WIDTH ||
> + sof.height < MXC_JPEG_MIN_HEIGHT) {
> + dev_err(dev, "JPEG width or height should be > 64: %dx%d\n",
> + sof.width, sof.height);
> + return -EINVAL;
> + }
> + if (sof.components_no > MXC_JPEG_MAX_COMPONENTS) {
> + dev_err(dev, "JPEG number of components should be <=%d",
> + MXC_JPEG_MAX_COMPONENTS);
> + return -EINVAL;
> + }
> + /* check and, if necessary, patch component IDs*/
> + if (!mxc_jpeg_valid_comp_id(dev, psof, psos))
> + dev_warn(dev, "JPEG component ids should be 0-3 or 1-4");
> +
> + img_fmt = mxc_jpeg_get_image_format(dev, &sof);
> + if (img_fmt == MXC_JPEG_INVALID)
> + return -EINVAL;
> +
> + /*
> + * If the transform flag from APP14 marker is 0, images that are
> + * encoded with 3 components have RGB colorspace, see Recommendation
> + * ITU-T T.872 chapter 6.5.3 APP14 marker segment for colour encoding
> + */
> + if (img_fmt == MXC_JPEG_YUV444 && app14 && app14_transform == 0)
> + img_fmt = MXC_JPEG_RGB;
> +
> + if (mxc_jpeg_imgfmt_to_fourcc(img_fmt, &fourcc)) {
> + dev_err(dev, "Fourcc not found for %d", img_fmt);
> + return -EINVAL;
> + }
> +
> + /*
> + * set-up the capture queue with the pixelformat and resolution
> + * detected from the jpeg output stream
> + */
> + q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
> + if (q_data_cap->w != sof.width || q_data_cap->h != sof.height)
> + src_chg = true;
> + q_data_cap->w = sof.width;
> + q_data_cap->h = sof.height;
> + q_data_cap->fmt = mxc_jpeg_find_format(ctx, fourcc);
> + q_data_cap->w_adjusted = q_data_cap->w;
> + q_data_cap->h_adjusted = q_data_cap->h;
> + /*
> + * align up the resolution for CAST IP,
> + * but leave the buffer resolution unchanged
> + */
> + v4l_bound_align_image(&q_data_cap->w_adjusted,
> + q_data_cap->w_adjusted, /* adjust up */
> + MXC_JPEG_MAX_WIDTH,
> + q_data_cap->fmt->h_align,
> + &q_data_cap->h_adjusted,
> + q_data_cap->h_adjusted, /* adjust up */
> + MXC_JPEG_MAX_HEIGHT,
> + q_data_cap->fmt->v_align,
> + 0);
> + dev_dbg(dev, "Detected jpeg res=(%dx%d)->(%dx%d), pixfmt=%c%c%c%c\n",
> + q_data_cap->w, q_data_cap->h,
> + q_data_cap->w_adjusted, q_data_cap->h_adjusted,
> + (fourcc & 0xff),
> + (fourcc >> 8) & 0xff,
> + (fourcc >> 16) & 0xff,
> + (fourcc >> 24) & 0xff);
> +
> + /* setup bytesperline/sizeimage for capture queue */
> + mxc_jpeg_bytesperline(q_data_cap, sof.precision);
> + mxc_jpeg_sizeimage(q_data_cap);
> +
> + /*
> + * if the CAPTURE format was updated with new values, regardless of
> + * whether they match the values set by the client or not, signal
> + * a source change event
> + */
> + if (src_chg)
> + notify_src_chg(ctx);
> +
> + return 0;
> +}
> +
> +static void mxc_jpeg_buf_queue(struct vb2_buffer *vb)
> +{
> + int ret;
> + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct mxc_jpeg_src_buf *jpeg_src_buf;
> +
> + if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
> + goto end;
> +
> + /* for V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE */
> + if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE)
> + goto end;
> +
> + jpeg_src_buf = vb2_to_mxc_buf(vb);
> + jpeg_src_buf->jpeg_parse_error = false;
> + ret = mxc_jpeg_parse(ctx,
> + (u8 *)vb2_plane_vaddr(vb, 0),
> + vb2_get_plane_payload(vb, 0),
> + &jpeg_src_buf->dht_needed);
> + if (ret)
> + jpeg_src_buf->jpeg_parse_error = true;
> +
> +end:
> + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
> +}
> +
> +static int mxc_jpeg_buf_out_validate(struct vb2_buffer *vb)
> +{
> + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> +
> + if (vbuf->field == V4L2_FIELD_ANY)
Drop this 'if'
> + vbuf->field = V4L2_FIELD_NONE;
and always set this to V4L2_FIELD_NONE.
> +
> + return 0;
> +}
> +
> +static int mxc_jpeg_buf_prepare(struct vb2_buffer *vb)
> +{
> + struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct mxc_jpeg_q_data *q_data = NULL;
> + struct device *dev = ctx->mxc_jpeg->dev;
> + unsigned long sizeimage;
> + int i;
> +
> + q_data = mxc_jpeg_get_q_data(ctx, vb->vb2_queue->type);
> + if (!q_data)
> + return -EINVAL;
> + for (i = 0; i < q_data->fmt->colplanes; i++) {
> + sizeimage = q_data->sizeimage[i];
> + if (vb2_plane_size(vb, i) < sizeimage) {
> + dev_err(dev, "plane %d too small (%lu < %lu)",
> + i, vb2_plane_size(vb, i), sizeimage);
> + return -EINVAL;
> + }
> + vb2_set_plane_payload(vb, i, sizeimage);
> + }
> + return 0;
> +}
> +
> +static const struct vb2_ops mxc_jpeg_qops = {
> + .queue_setup = mxc_jpeg_queue_setup,
> + .wait_prepare = vb2_ops_wait_prepare,
> + .wait_finish = vb2_ops_wait_finish,
> + .buf_out_validate = mxc_jpeg_buf_out_validate,
> + .buf_prepare = mxc_jpeg_buf_prepare,
> + .start_streaming = mxc_jpeg_start_streaming,
> + .stop_streaming = mxc_jpeg_stop_streaming,
> + .buf_queue = mxc_jpeg_buf_queue,
> +};
> +
> +static int mxc_jpeg_queue_init(void *priv, struct vb2_queue *src_vq,
> + struct vb2_queue *dst_vq)
> +{
> + struct mxc_jpeg_ctx *ctx = priv;
> + int ret;
> +
> + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
> + src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> + src_vq->drv_priv = ctx;
> + src_vq->buf_struct_size = sizeof(struct mxc_jpeg_src_buf);
> + src_vq->ops = &mxc_jpeg_qops;
> + src_vq->mem_ops = &vb2_dma_contig_memops;
> + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + src_vq->lock = &ctx->mxc_jpeg->lock;
> + src_vq->dev = ctx->mxc_jpeg->dev;
> + src_vq->allow_zero_bytesused = 1; /* keep old userspace apps working */
> +
> + ret = vb2_queue_init(src_vq);
> + if (ret)
> + return ret;
> +
> + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> + dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> + dst_vq->drv_priv = ctx;
> + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + dst_vq->ops = &mxc_jpeg_qops;
> + dst_vq->mem_ops = &vb2_dma_contig_memops;
> + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + dst_vq->lock = &ctx->mxc_jpeg->lock;
> + dst_vq->dev = ctx->mxc_jpeg->dev;
> +
> + ret = vb2_queue_init(dst_vq);
> + return ret;
> +}
> +
> +static void mxc_jpeg_set_default_params(struct mxc_jpeg_ctx *ctx)
> +{
> + struct mxc_jpeg_q_data *out_q = &ctx->out_q;
> + struct mxc_jpeg_q_data *cap_q = &ctx->cap_q;
> + struct mxc_jpeg_q_data *q[2] = {out_q, cap_q};
> + int i;
> +
> + if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE) {
> + out_q->fmt = mxc_jpeg_find_format(ctx, MXC_JPEG_DEFAULT_PFMT);
> + cap_q->fmt = mxc_jpeg_find_format(ctx, V4L2_PIX_FMT_JPEG);
> + } else {
> + out_q->fmt = mxc_jpeg_find_format(ctx, V4L2_PIX_FMT_JPEG);
> + cap_q->fmt = mxc_jpeg_find_format(ctx, MXC_JPEG_DEFAULT_PFMT);
> + }
> +
> + for (i = 0; i < 2; i++) {
> + q[i]->w = MXC_JPEG_DEFAULT_WIDTH;
> + q[i]->h = MXC_JPEG_DEFAULT_HEIGHT;
> + q[i]->w_adjusted = MXC_JPEG_DEFAULT_WIDTH;
> + q[i]->h_adjusted = MXC_JPEG_DEFAULT_HEIGHT;
> + mxc_jpeg_bytesperline(q[i], 8);
> + mxc_jpeg_sizeimage(q[i]);
> + }
> +}
> +
> +static int mxc_jpeg_open(struct file *file)
> +{
> + struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
> + struct video_device *mxc_vfd = video_devdata(file);
> + struct device *dev = mxc_jpeg->dev;
> + struct mxc_jpeg_ctx *ctx;
> + int ret = 0;
> +
> + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> +
> + if (mutex_lock_interruptible(&mxc_jpeg->lock)) {
> + ret = -ERESTARTSYS;
> + goto free;
> + }
> +
> + v4l2_fh_init(&ctx->fh, mxc_vfd);
> + file->private_data = &ctx->fh;
> + v4l2_fh_add(&ctx->fh);
> +
> + ctx->mxc_jpeg = mxc_jpeg;
> +
> + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(mxc_jpeg->m2m_dev, ctx,
> + mxc_jpeg_queue_init);
> +
> + if (IS_ERR(ctx->fh.m2m_ctx)) {
> + ret = PTR_ERR(ctx->fh.m2m_ctx);
> + goto error;
> + }
> +
> + mxc_jpeg_set_default_params(ctx);
> + ctx->slot = MXC_MAX_SLOTS; /* slot not allocated yet */
> +
> + if (mxc_jpeg->mode == MXC_JPEG_DECODE)
> + dev_dbg(dev, "Opened JPEG decoder instance %p\n", ctx);
> + else
> + dev_dbg(dev, "Opened JPEG encoder instance %p\n", ctx);
> + mutex_unlock(&mxc_jpeg->lock);
> +
> + return 0;
> +
> +error:
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + mutex_unlock(&mxc_jpeg->lock);
> +free:
> + kfree(ctx);
> + return ret;
> +}
> +
> +static int mxc_jpeg_querycap(struct file *file, void *priv,
> + struct v4l2_capability *cap)
> +{
> + struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
> +
> + strscpy(cap->driver, MXC_JPEG_NAME " decoder", sizeof(cap->driver));
> + strscpy(cap->card, MXC_JPEG_NAME " decoder", sizeof(cap->card));
For the two lines above: decoder -> codec
Since this driver is used for both encoder and decoder, so it is odd to
see 'decoder' for video1 as well. Just name it 'codec'.
> + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
> + dev_name(mxc_jpeg->dev));
> + cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;
> + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
> +
> + return 0;
> +}
> +
> +static int mxc_jpeg_enum_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> +
> + if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE)
> + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
> + MXC_JPEG_FMT_TYPE_ENC);
> + else
> + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
> + MXC_JPEG_FMT_TYPE_RAW);
> +}
> +
> +static int mxc_jpeg_enum_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> +
> + if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE)
> + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
> + MXC_JPEG_FMT_TYPE_ENC);
> + else
> + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
> + MXC_JPEG_FMT_TYPE_RAW);
> +}
> +
> +static int mxc_jpeg_try_fmt(struct v4l2_format *f, struct mxc_jpeg_fmt *fmt,
> + struct mxc_jpeg_ctx *ctx, int q_type)
> +{
> + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> + struct v4l2_plane_pix_format *pfmt;
> + u32 w = (pix_mp->width < MXC_JPEG_MAX_WIDTH) ?
> + pix_mp->width : MXC_JPEG_MAX_WIDTH;
> + u32 h = (pix_mp->height < MXC_JPEG_MAX_HEIGHT) ?
> + pix_mp->height : MXC_JPEG_MAX_HEIGHT;
> + int i;
> + struct mxc_jpeg_q_data tmp_q;
> +
> + memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
> + pix_mp->field = V4L2_FIELD_NONE;
> + pix_mp->num_planes = fmt->colplanes;
> + pix_mp->pixelformat = fmt->fourcc;
> +
> + /*
> + * use MXC_JPEG_H_ALIGN instead of fmt->v_align, for vertical
> + * alignment, to loosen up the alignment to multiple of 8,
> + * otherwise NV12-1080p fails as 1080 is not a multiple of 16
> + */
> + v4l_bound_align_image(&w,
> + MXC_JPEG_MIN_WIDTH,
> + w, /* adjust downwards*/
> + fmt->h_align,
> + &h,
> + MXC_JPEG_MIN_HEIGHT,
> + h, /* adjust downwards*/
> + MXC_JPEG_H_ALIGN,
> + 0);
> + pix_mp->width = w; /* negotiate the width */
> + pix_mp->height = h; /* negotiate the height */
> +
> + /* get user input into the tmp_q */
> + tmp_q.w = w;
> + tmp_q.h = h;
> + tmp_q.fmt = fmt;
> + for (i = 0; i < pix_mp->num_planes; i++) {
> + pfmt = &pix_mp->plane_fmt[i];
> + tmp_q.bytesperline[i] = pfmt->bytesperline;
> + tmp_q.sizeimage[i] = pfmt->sizeimage;
> + }
> +
> + /* calculate bytesperline & sizeimage into the tmp_q */
> + mxc_jpeg_bytesperline(&tmp_q, 8);
> + mxc_jpeg_sizeimage(&tmp_q);
> +
> + /* adjust user format according to our calculations */
> + for (i = 0; i < pix_mp->num_planes; i++) {
> + pfmt = &pix_mp->plane_fmt[i];
> + memset(pfmt->reserved, 0, sizeof(pfmt->reserved));
> + pfmt->bytesperline = tmp_q.bytesperline[i];
> + pfmt->sizeimage = tmp_q.sizeimage[i];
> + }
> +
> + /* fix colorspace information to sRGB for both output & capture */
> + pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
> + pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
> + pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
> + pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
So YUV formats are expected to be full range as well? Both when encoding
and decoding?
> +
> + return 0;
> +}
> +
> +static int mxc_jpeg_try_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> + struct device *dev = jpeg->dev;
> + struct mxc_jpeg_fmt *fmt;
> + u32 fourcc = f->fmt.pix_mp.pixelformat;
> +
> + int q_type = (jpeg->mode == MXC_JPEG_DECODE) ?
> + MXC_JPEG_FMT_TYPE_RAW : MXC_JPEG_FMT_TYPE_ENC;
> +
> + if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
> + dev_err(dev, "TRY_FMT with Invalid type: %d\n", f->type);
> + return -EINVAL;
> + }
> +
> + fmt = mxc_jpeg_find_format(ctx, fourcc);
> + if (!fmt || fmt->flags != q_type) {
> + dev_warn(dev, "Format not supported: %c%c%c%c, use the default.\n",
> + (fourcc & 0xff),
> + (fourcc >> 8) & 0xff,
> + (fourcc >> 16) & 0xff,
> + (fourcc >> 24) & 0xff);
> + f->fmt.pix_mp.pixelformat = (jpeg->mode == MXC_JPEG_DECODE) ?
> + MXC_JPEG_DEFAULT_PFMT : V4L2_PIX_FMT_JPEG;
> + fmt = mxc_jpeg_find_format(ctx, f->fmt.pix_mp.pixelformat);
> + }
> + return mxc_jpeg_try_fmt(f, fmt, ctx, q_type);
> +}
> +
> +static int mxc_jpeg_try_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> + struct device *dev = jpeg->dev;
> + struct mxc_jpeg_fmt *fmt;
> + u32 fourcc = f->fmt.pix_mp.pixelformat;
> +
> + int q_type = (jpeg->mode == MXC_JPEG_ENCODE) ?
> + MXC_JPEG_FMT_TYPE_RAW : MXC_JPEG_FMT_TYPE_ENC;
> +
> + if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
> + dev_err(dev, "TRY_FMT with Invalid type: %d\n", f->type);
> + return -EINVAL;
> + }
> +
> + fmt = mxc_jpeg_find_format(ctx, fourcc);
> + if (!fmt || fmt->flags != q_type) {
> + dev_warn(dev, "Format not supported: %c%c%c%c, use the default.\n",
> + (fourcc & 0xff),
> + (fourcc >> 8) & 0xff,
> + (fourcc >> 16) & 0xff,
> + (fourcc >> 24) & 0xff);
> + f->fmt.pix_mp.pixelformat = (jpeg->mode == MXC_JPEG_ENCODE) ?
> + MXC_JPEG_DEFAULT_PFMT : V4L2_PIX_FMT_JPEG;
> + fmt = mxc_jpeg_find_format(ctx, f->fmt.pix_mp.pixelformat);
> + }
> + return mxc_jpeg_try_fmt(f, fmt, ctx, q_type);
> +}
> +
> +static int mxc_jpeg_s_fmt(struct mxc_jpeg_ctx *ctx,
> + struct v4l2_format *f)
> +{
> + struct vb2_queue *vq;
> + struct mxc_jpeg_q_data *q_data = NULL;
> + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> + int i;
> +
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (!vq)
> + return -EINVAL;
> +
> + q_data = mxc_jpeg_get_q_data(ctx, f->type);
> +
> + if (vb2_is_busy(vq)) {
> + v4l2_err(&jpeg->v4l2_dev, "queue busy\n");
> + return -EBUSY;
> + }
> +
> + q_data->fmt = mxc_jpeg_find_format(ctx, pix_mp->pixelformat);
> + q_data->w = pix_mp->width;
> + q_data->h = pix_mp->height;
> +
> + q_data->w_adjusted = q_data->w;
> + q_data->h_adjusted = q_data->h;
> + if (jpeg->mode == MXC_JPEG_DECODE) {
> + /*
> + * align up the resolution for CAST IP,
> + * but leave the buffer resolution unchanged
> + */
> + v4l_bound_align_image(&q_data->w_adjusted,
> + q_data->w_adjusted, /* adjust upwards */
> + MXC_JPEG_MAX_WIDTH,
> + q_data->fmt->h_align,
> + &q_data->h_adjusted,
> + q_data->h_adjusted, /* adjust upwards */
> + MXC_JPEG_MAX_HEIGHT,
> + q_data->fmt->v_align,
> + 0);
> + } else {
> + /*
> + * align down the resolution for CAST IP,
> + * but leave the buffer resolution unchanged
> + */
> + v4l_bound_align_image(&q_data->w_adjusted,
> + MXC_JPEG_MIN_WIDTH,
> + q_data->w_adjusted, /* adjust downwards*/
> + q_data->fmt->h_align,
> + &q_data->h_adjusted,
> + MXC_JPEG_MIN_HEIGHT,
> + q_data->h_adjusted, /* adjust downwards*/
> + q_data->fmt->v_align,
> + 0);
> + }
> +
> + for (i = 0; i < pix_mp->num_planes; i++) {
> + q_data->bytesperline[i] = pix_mp->plane_fmt[i].bytesperline;
> + q_data->sizeimage[i] = pix_mp->plane_fmt[i].sizeimage;
> + }
> +
> + return 0;
> +}
> +
> +static int mxc_jpeg_s_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + int ret;
> +
> + ret = mxc_jpeg_try_fmt_vid_cap(file, priv, f);
> + if (ret)
> + return ret;
> +
> + return mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f);
> +}
> +
> +static int mxc_jpeg_s_fmt_vid_out(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + int ret;
> +
> + ret = mxc_jpeg_try_fmt_vid_out(file, priv, f);
> + if (ret)
> + return ret;
> +
> + return mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f);
> +}
> +
> +static int mxc_jpeg_g_fmt_vid(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> + struct device *dev = jpeg->dev;
> + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> + struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, f->type);
> + int i;
> +
> + if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
> + dev_err(dev, "G_FMT with Invalid type: %d\n", f->type);
> + return -EINVAL;
> + }
> +
> + pix_mp->pixelformat = q_data->fmt->fourcc;
> + pix_mp->width = q_data->w;
> + pix_mp->height = q_data->h;
> + pix_mp->field = V4L2_FIELD_NONE;
> +
> + /* fix colorspace information to sRGB for both output & capture */
> + pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
> + pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
> + pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
> + pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
> +
> + pix_mp->num_planes = q_data->fmt->colplanes;
> + for (i = 0; i < pix_mp->num_planes; i++) {
> + pix_mp->plane_fmt[i].bytesperline = q_data->bytesperline[i];
> + pix_mp->plane_fmt[i].sizeimage = q_data->sizeimage[i];
> + }
> +
> + return 0;
> +}
> +
> +static int mxc_jpeg_subscribe_event(struct v4l2_fh *fh,
> + const struct v4l2_event_subscription *sub)
> +{
> + switch (sub->type) {
> + case V4L2_EVENT_EOS:
> + return v4l2_event_subscribe(fh, sub, 0, NULL);
> + case V4L2_EVENT_SOURCE_CHANGE:
> + return v4l2_src_change_event_subscribe(fh, sub);
> + default:
> + return -EINVAL;
> + }
> +}
> +
> +static int mxc_jpeg_qbuf(struct file *file, void *priv,
> + struct v4l2_buffer *buf)
> +{
> + struct v4l2_fh *fh = file->private_data;
> + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> + struct device *dev = ctx->mxc_jpeg->dev;
> + struct vb2_queue *vq;
> +
> + dev_dbg(dev, "QBUF type=%d, index=%d", buf->type, buf->index);
> + vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
> + if (buf->index >= vq->num_buffers) {
Why this test? There should be no need for this function,
v4l2_m2m_ioctl_qbuf() should do the right thing here.
> + dev_err(dev, "buffer index out of range\n");
> + return -EINVAL;
> + }
> +
> + return v4l2_m2m_qbuf(file, fh->m2m_ctx, buf);
> +}
> +
> +static int mxc_jpeg_dqbuf(struct file *file, void *priv,
> + struct v4l2_buffer *buf)
> +{
> + struct v4l2_fh *fh = file->private_data;
> + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> + struct device *dev = ctx->mxc_jpeg->dev;
> + int num_src_ready = v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx);
> + int ret;
> +
> + dev_dbg(dev, "DQBUF type=%d, index=%d", buf->type, buf->index);
> + if (ctx->stopping == 1 && num_src_ready == 0) {
> + /* No more src bufs, notify app EOS */
> + notify_eos(ctx);
> + ctx->stopping = 0;
> + }
> +
> + ret = v4l2_m2m_dqbuf(file, fh->m2m_ctx, buf);
> + buf->field = V4L2_FIELD_NONE;
This line belongs in mxc_jpeg_buf_prepare().
> +
> + return ret;
> +}
> +
> +static const struct v4l2_ioctl_ops mxc_jpeg_ioctl_ops = {
> + .vidioc_querycap = mxc_jpeg_querycap,
> + .vidioc_enum_fmt_vid_cap = mxc_jpeg_enum_fmt_vid_cap,
> + .vidioc_enum_fmt_vid_out = mxc_jpeg_enum_fmt_vid_out,
> +
> + .vidioc_try_fmt_vid_cap_mplane = mxc_jpeg_try_fmt_vid_cap,
> + .vidioc_try_fmt_vid_out_mplane = mxc_jpeg_try_fmt_vid_out,
> +
> + .vidioc_s_fmt_vid_cap_mplane = mxc_jpeg_s_fmt_vid_cap,
> + .vidioc_s_fmt_vid_out_mplane = mxc_jpeg_s_fmt_vid_out,
> +
> + .vidioc_g_fmt_vid_cap_mplane = mxc_jpeg_g_fmt_vid,
> + .vidioc_g_fmt_vid_out_mplane = mxc_jpeg_g_fmt_vid,
> +
> + .vidioc_subscribe_event = mxc_jpeg_subscribe_event,
> + .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
> +
> + .vidioc_try_decoder_cmd = mxc_jpeg_try_decoder_cmd,
This can be replaced by v4l2_m2m_ioctl_try_decoder_cmd
> + .vidioc_decoder_cmd = mxc_jpeg_decoder_cmd,
> + .vidioc_try_encoder_cmd = mxc_jpeg_try_encoder_cmd,
and this by v4l2_m2m_ioctl_try_encoder_cmd.
> + .vidioc_encoder_cmd = mxc_jpeg_encoder_cmd,
> +
> + .vidioc_qbuf = mxc_jpeg_qbuf,
> + .vidioc_dqbuf = mxc_jpeg_dqbuf,
> +
> + .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
> + .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
> + .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
> + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
> + .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
> + .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> +};
> +
> +static int mxc_jpeg_release(struct file *file)
> +{
> + struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
> + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(file->private_data);
> + struct device *dev = mxc_jpeg->dev;
> +
> + mutex_lock(&mxc_jpeg->lock);
> + if (mxc_jpeg->mode == MXC_JPEG_DECODE)
> + dev_dbg(dev, "Release JPEG decoder instance on slot %d.",
> + ctx->slot);
> + else
> + dev_dbg(dev, "Release JPEG encoder instance on slot %d.",
> + ctx->slot);
> + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + kfree(ctx);
> + mutex_unlock(&mxc_jpeg->lock);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_file_operations mxc_jpeg_fops = {
> + .owner = THIS_MODULE,
> + .open = mxc_jpeg_open,
> + .release = mxc_jpeg_release,
> + .poll = v4l2_m2m_fop_poll,
> + .unlocked_ioctl = video_ioctl2,
> + .mmap = v4l2_m2m_fop_mmap,
> +};
> +
> +static struct v4l2_m2m_ops mxc_jpeg_m2m_ops = {
> + .device_run = mxc_jpeg_device_run,
> +};
> +
> +static void mxc_jpeg_detach_pm_domains(struct mxc_jpeg_dev *jpeg)
> +{
> + int i;
> +
> + for (i = 0; i < jpeg->num_domains; i++) {
> + if (jpeg->pd_link[i] && !IS_ERR(jpeg->pd_link[i]))
> + device_link_del(jpeg->pd_link[i]);
> + if (jpeg->pd_dev[i] && !IS_ERR(jpeg->pd_dev[i]))
> + dev_pm_domain_detach(jpeg->pd_dev[i], true);
> + jpeg->pd_dev[i] = NULL;
> + jpeg->pd_link[i] = NULL;
> + }
> +}
> +
> +static int mxc_jpeg_attach_pm_domains(struct mxc_jpeg_dev *jpeg)
> +{
> + struct device *dev = jpeg->dev;
> + struct device_node *np = jpeg->pdev->dev.of_node;
> + int i;
> + int ret;
> +
> + jpeg->num_domains = of_count_phandle_with_args(np, "power-domains",
> + "#power-domain-cells");
> + if (jpeg->num_domains < 0) {
> + dev_err(dev, "No power domains defined for jpeg node\n");
> + return jpeg->num_domains;
> + }
> +
> + jpeg->pd_dev = devm_kmalloc_array(dev, jpeg->num_domains,
> + sizeof(*jpeg->pd_dev), GFP_KERNEL);
> + if (!jpeg->pd_dev)
> + return -ENOMEM;
> +
> + jpeg->pd_link = devm_kmalloc_array(dev, jpeg->num_domains,
> + sizeof(*jpeg->pd_link), GFP_KERNEL);
> + if (!jpeg->pd_link)
> + return -ENOMEM;
> +
> + for (i = 0; i < jpeg->num_domains; i++) {
> + jpeg->pd_dev[i] = dev_pm_domain_attach_by_id(dev, i);
> + if (IS_ERR(jpeg->pd_dev[i])) {
> + ret = PTR_ERR(jpeg->pd_dev[i]);
> + goto fail;
> + }
> +
> + jpeg->pd_link[i] = device_link_add(dev, jpeg->pd_dev[i],
> + DL_FLAG_STATELESS |
> + DL_FLAG_PM_RUNTIME |
> + DL_FLAG_RPM_ACTIVE);
> + if (IS_ERR(jpeg->pd_link[i])) {
> + ret = PTR_ERR(jpeg->pd_link[i]);
> + goto fail;
> + }
> + }
> +
> + return 0;
> +fail:
> + mxc_jpeg_detach_pm_domains(jpeg);
> + return ret;
> +}
> +
> +static int mxc_jpeg_probe(struct platform_device *pdev)
> +{
> + struct mxc_jpeg_dev *jpeg;
> + struct device *dev = &pdev->dev;
> + struct resource *res;
> + int dec_irq;
> + int ret;
> + int mode;
> + const struct of_device_id *of_id;
> + unsigned int slot;
> +
> + of_id = of_match_node(mxc_jpeg_match, dev->of_node);
> + mode = (int)(u64)of_id->data;
> +
> + jpeg = devm_kzalloc(dev, sizeof(struct mxc_jpeg_dev), GFP_KERNEL);
> + if (!jpeg)
> + return -ENOMEM;
> +
> + mutex_init(&jpeg->lock);
> + spin_lock_init(&jpeg->hw_lock);
> +
> + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
> + if (ret) {
> + dev_err(&pdev->dev, "No suitable DMA available.\n");
> + goto err_irq;
> + }
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + jpeg->base_reg = devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(jpeg->base_reg))
> + return PTR_ERR(jpeg->base_reg);
> +
> + for (slot = 0; slot < MXC_MAX_SLOTS; slot++) {
> + dec_irq = platform_get_irq(pdev, slot);
> + if (dec_irq < 0) {
> + dev_err(&pdev->dev, "Failed to get irq %d\n", dec_irq);
> + ret = dec_irq;
> + goto err_irq;
> + }
> + ret = devm_request_irq(&pdev->dev, dec_irq, mxc_jpeg_dec_irq,
> + 0, pdev->name, jpeg);
> + if (ret) {
> + dev_err(&pdev->dev, "Failed to request irq %d (%d)\n",
> + dec_irq, ret);
> + goto err_irq;
> + }
> + }
> +
> + jpeg->pdev = pdev;
> + jpeg->dev = dev;
> + jpeg->mode = mode;
> +
> + ret = mxc_jpeg_attach_pm_domains(jpeg);
> + if (ret < 0) {
> + dev_err(dev, "failed to attach power domains %d\n", ret);
> + return ret;
> + }
> +
> + /* v4l2 */
> + ret = v4l2_device_register(dev, &jpeg->v4l2_dev);
> + if (ret) {
> + dev_err(dev, "failed to register v4l2 device\n");
> + goto err_register;
> + }
> + jpeg->m2m_dev = v4l2_m2m_init(&mxc_jpeg_m2m_ops);
> + if (IS_ERR(jpeg->m2m_dev)) {
> + dev_err(dev, "failed to register v4l2 device\n");
> + goto err_m2m;
> + }
> +
> + jpeg->dec_vdev = video_device_alloc();
> + if (!jpeg->dec_vdev) {
> + dev_err(dev, "failed to register v4l2 device\n");
> + goto err_vdev_alloc;
> + }
> + if (mode == MXC_JPEG_ENCODE)
> + snprintf(jpeg->dec_vdev->name,
> + sizeof(jpeg->dec_vdev->name),
> + "%s-enc", MXC_JPEG_NAME);
> + else
> + snprintf(jpeg->dec_vdev->name,
> + sizeof(jpeg->dec_vdev->name),
> + "%s-dec", MXC_JPEG_NAME);
> +
> + jpeg->dec_vdev->fops = &mxc_jpeg_fops;
> + jpeg->dec_vdev->ioctl_ops = &mxc_jpeg_ioctl_ops;
> + jpeg->dec_vdev->minor = -1;
> + jpeg->dec_vdev->release = video_device_release;
> + jpeg->dec_vdev->lock = &jpeg->lock; /* lock for ioctl serialization */
> + jpeg->dec_vdev->v4l2_dev = &jpeg->v4l2_dev;
> + jpeg->dec_vdev->vfl_dir = VFL_DIR_M2M;
> + jpeg->dec_vdev->device_caps = V4L2_CAP_STREAMING |
> + V4L2_CAP_VIDEO_M2M_MPLANE;
> +
> + ret = video_register_device(jpeg->dec_vdev, VFL_TYPE_VIDEO, -1);
> + if (ret) {
> + dev_err(dev, "failed to register video device\n");
> + goto err_vdev_register;
> + }
> + video_set_drvdata(jpeg->dec_vdev, jpeg);
> + if (mode == MXC_JPEG_ENCODE)
> + v4l2_info(&jpeg->v4l2_dev,
> + "encoder device registered as /dev/video%d (%d,%d)\n",
> + jpeg->dec_vdev->num, VIDEO_MAJOR,
> + jpeg->dec_vdev->minor);
> + else
> + v4l2_info(&jpeg->v4l2_dev,
> + "decoder device registered as /dev/video%d (%d,%d)\n",
> + jpeg->dec_vdev->num, VIDEO_MAJOR,
> + jpeg->dec_vdev->minor);
> +
> + platform_set_drvdata(pdev, jpeg);
> +
> + return 0;
> +
> +err_vdev_register:
> + video_device_release(jpeg->dec_vdev);
> +
> +err_vdev_alloc:
> + v4l2_m2m_release(jpeg->m2m_dev);
> +
> +err_m2m:
> + v4l2_device_unregister(&jpeg->v4l2_dev);
> +
> +err_register:
> +err_irq:
> + return ret;
> +}
> +
> +static int mxc_jpeg_remove(struct platform_device *pdev)
> +{
> + unsigned int slot;
> + struct mxc_jpeg_dev *jpeg = platform_get_drvdata(pdev);
> +
> + for (slot = 0; slot < MXC_MAX_SLOTS; slot++)
> + mxc_jpeg_free_slot_data(jpeg, slot);
> +
> + video_unregister_device(jpeg->dec_vdev);
> + video_device_release(jpeg->dec_vdev);
> + v4l2_m2m_release(jpeg->m2m_dev);
> + v4l2_device_unregister(&jpeg->v4l2_dev);
> + mxc_jpeg_detach_pm_domains(jpeg);
> +
> + return 0;
> +}
> +
> +MODULE_DEVICE_TABLE(of, mxc_jpeg_match);
> +
> +static struct platform_driver mxc_jpeg_driver = {
> + .probe = mxc_jpeg_probe,
> + .remove = mxc_jpeg_remove,
> + .driver = {
> + .name = "mxc-jpeg",
> + .of_match_table = mxc_jpeg_match,
> + },
> +};
> +module_platform_driver(mxc_jpeg_driver);
> +
> +MODULE_AUTHOR("Zhengyu Shen <zhengyu.shen_1@nxp.com>");
> +MODULE_AUTHOR("Mirela Rabulea <mirela.rabulea@nxp.com>");
> +MODULE_DESCRIPTION("V4L2 driver for i.MX8 QXP/QM JPEG encoder/decoder");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.h b/drivers/media/platform/imx-jpeg/mxc-jpeg.h
> new file mode 100644
> index 000000000000..ef1670dafeb4
> --- /dev/null
> +++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.h
> @@ -0,0 +1,184 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
> + *
> + * Copyright 2018-2019 NXP
> + */
> +
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-fh.h>
> +
> +#ifndef _MXC_JPEG_CORE_H
> +#define _MXC_JPEG_CORE_H
> +
> +#define MXC_JPEG_NAME "mxc-jpeg"
> +#define MXC_JPEG_FMT_TYPE_ENC 0
> +#define MXC_JPEG_FMT_TYPE_RAW 1
> +#define MXC_JPEG_DEFAULT_WIDTH 1280
> +#define MXC_JPEG_DEFAULT_HEIGHT 720
> +#define MXC_JPEG_DEFAULT_PFMT V4L2_PIX_FMT_RGB24
> +#define MXC_JPEG_MIN_WIDTH 64
> +#define MXC_JPEG_MIN_HEIGHT 64
> +#define MXC_JPEG_MAX_WIDTH 0x2000
> +#define MXC_JPEG_MAX_HEIGHT 0x2000
> +#define MXC_JPEG_MAX_CFG_STREAM 0x1000
> +#define MXC_JPEG_H_ALIGN 3
> +#define MXC_JPEG_W_ALIGN 3
> +#define MXC_JPEG_MAX_SIZEIMAGE 0xFFFFFC00
> +#define MXC_JPEG_MAX_PLANES 2
> +
> +enum mxc_jpeg_enc_state {
> + MXC_JPEG_ENCODING = 0, /* jpeg encode phase */
> + MXC_JPEG_ENC_CONF = 1, /* jpeg encoder config phase */
> +};
> +
> +enum mxc_jpeg_mode {
> + MXC_JPEG_DECODE = 0, /* jpeg decode mode */
> + MXC_JPEG_ENCODE = 1, /* jpeg encode mode */
> +};
> +
> +/**
> + * struct jpeg_fmt - driver's internal color format data
> + * @name: format description
> + * @fourcc: fourcc code, 0 if not applicable
> + * @depth: number of bits per pixel
> + * @colplanes: number of color planes (1 for packed formats)
> + * @h_align: horizontal alignment order (align to 2^h_align)
> + * @v_align: vertical alignment order (align to 2^v_align)
> + * @flags: flags describing format applicability
> + */
> +struct mxc_jpeg_fmt {
> + char *name;
> + u32 fourcc;
> + int depth;
> + int colplanes;
> + int h_align;
> + int v_align;
> + u32 flags;
> +};
> +
> +struct mxc_jpeg_desc {
> + u32 next_descpt_ptr;
> + u32 buf_base0;
> + u32 buf_base1;
> + u32 line_pitch;
> + u32 stm_bufbase;
> + u32 stm_bufsize;
> + u32 imgsize;
> + u32 stm_ctrl;
> +} __packed;
> +
> +struct mxc_jpeg_q_data {
> + struct mxc_jpeg_fmt *fmt;
> + u32 sizeimage[MXC_JPEG_MAX_PLANES];
> + u32 bytesperline[MXC_JPEG_MAX_PLANES];
> + int w;
> + int w_adjusted;
> + int h;
> + int h_adjusted;
> + unsigned int sequence;
> +};
> +
> +struct mxc_jpeg_ctx {
> + struct mxc_jpeg_dev *mxc_jpeg;
> + struct mxc_jpeg_q_data out_q;
> + struct mxc_jpeg_q_data cap_q;
> + struct v4l2_fh fh;
> + enum mxc_jpeg_enc_state enc_state;
> + unsigned int stopping;
> + unsigned int slot;
> +};
> +
> +struct mxc_jpeg_slot_data {
> + bool used;
> + struct mxc_jpeg_desc *desc; // enc/dec descriptor
> + struct mxc_jpeg_desc *cfg_desc; // configuration descriptor
> + void *cfg_stream_vaddr; // configuration bitstream virtual address
> + unsigned int cfg_stream_size;
> + dma_addr_t desc_handle;
> + dma_addr_t cfg_desc_handle; // configuration descriptor dma address
> + dma_addr_t cfg_stream_handle; // configuration bitstream dma address
> +};
> +
> +struct mxc_jpeg_dev {
> + spinlock_t hw_lock; /* hardware access lock */
> + unsigned int mode;
> + struct mutex lock; /* v4l2 ioctls serialization */
> + struct platform_device *pdev;
> + struct device *dev;
> + void __iomem *base_reg;
> + struct v4l2_device v4l2_dev;
> + struct v4l2_m2m_dev *m2m_dev;
> + struct video_device *dec_vdev;
> + struct mxc_jpeg_slot_data slot_data[MXC_MAX_SLOTS];
> + int num_domains;
> + struct device **pd_dev;
> + struct device_link **pd_link;
> +};
> +
> +/* JPEG marker identifiers */
> +#define SOF0 0xC0
> +#define SOF1 0xC1
> +#define SOF2 0xC2
> +#define SOS 0xDA
> +#define DHT 0xC4
> +#define APP14 0xEE
> +
> +/**
> + * struct mxc_jpeg_sof_comp - JPEG Start Of Frame component fields
> + * @id: component id
> + * @v: vertical sampling
> + * @h: horizontal sampling
> + * @quantization_table_no: id of quantization table
> + */
> +struct mxc_jpeg_sof_comp {
> + u8 id;
> + u8 v :4;
> + u8 h :4;
> + u8 quantization_table_no;
> +} __packed;
> +
> +#define MXC_JPEG_MAX_COMPONENTS 4
> +/**
> + * struct mxc_jpeg_sof - JPEG Start Of Frame marker fields
> + * @length: Start of Frame length
> + * @precision: precision (bits per pixel per color component)
> + * @height: image height
> + * @width: image width
> + * @components_no: number of color components
> + * @comp: component fields for each color component
> + */
> +struct mxc_jpeg_sof {
> + u16 length;
> + u8 precision;
> + u16 height, width;
> + u8 components_no;
> + struct mxc_jpeg_sof_comp comp[MXC_JPEG_MAX_COMPONENTS];
> +} __packed;
> +
> +/**
> + * struct mxc_jpeg_sof - JPEG Start Of Scan component fields
> + * @id: component id
> + * @huffman_table_no: id of the Huffman table
> + */
> +struct mxc_jpeg_sos_comp {
> + u8 id; /*component id*/
> + u8 huffman_table_no;
> +} __packed;
> +
> +/**
> + * struct mxc_jpeg_sof - JPEG Start Of Scan marker fields
> + * @length: Start of Frame length
> + * @components_no: number of color components
> + * @comp: SOS component fields for each color component
> + * @ignorable_bytes: ignorable bytes
> + */
> +struct mxc_jpeg_sos {
> + u16 length;
> + u8 components_no;
> + struct mxc_jpeg_sos_comp comp[MXC_JPEG_MAX_COMPONENTS];
> + u8 ignorable_bytes[3];
> +} __packed;
> +
> +#endif
>
Regards,
Hans
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
2021-01-11 19:28 ` [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
2021-01-12 0:36 ` kernel test robot
2021-01-19 10:31 ` Hans Verkuil
@ 2021-01-20 11:07 ` kernel test robot
2021-01-20 13:52 ` kernel test robot
3 siblings, 0 replies; 20+ messages in thread
From: kernel test robot @ 2021-01-20 11:07 UTC (permalink / raw)
To: Mirela Rabulea, mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: kbuild-all, paul.kocialkowski, linux-media, linux-kernel,
linux-imx, s.hauer
[-- Attachment #1: Type: text/plain, Size: 7860 bytes --]
Hi Mirela,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on shawnguo/for-next robh/for-next linus/master v5.11-rc4 next-20210120]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Mirela-Rabulea/Add-V4L2-driver-for-i-MX8-JPEG-Encoder-Decoder/20210112-033507
base: git://linuxtv.org/media_tree.git master
config: i386-randconfig-m021-20210120 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
smatch warnings:
drivers/media/platform/imx-jpeg/mxc-jpeg.c:1373 mxc_jpeg_parse() warn: inconsistent indenting
vim +1373 drivers/media/platform/imx-jpeg/mxc-jpeg.c
1286
1287 static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
1288 u8 *src_addr, u32 size, bool *dht_needed)
1289 {
1290 struct device *dev = ctx->mxc_jpeg->dev;
1291 struct mxc_jpeg_q_data *q_data_out, *q_data_cap;
1292 enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1293 struct mxc_jpeg_stream stream;
1294 bool notfound = true;
1295 bool app14 = false;
1296 bool src_chg = false;
1297 u8 app14_transform = 0;
1298 struct mxc_jpeg_sof sof, *psof = NULL;
1299 struct mxc_jpeg_sos *psos = NULL;
1300 int byte;
1301 u8 *next = NULL;
1302 enum mxc_jpeg_image_format img_fmt;
1303 u32 fourcc;
1304
1305 memset(&sof, 0, sizeof(struct mxc_jpeg_sof));
1306 stream.addr = src_addr;
1307 stream.end = size;
1308 stream.loc = 0;
1309 *dht_needed = true;
1310
1311 /* check stream starts with SOI */
1312 byte = get_byte(&stream);
1313 if (byte == -1 || byte != 0xFF)
1314 return -EINVAL;
1315 byte = get_byte(&stream);
1316 if (byte == -1 || byte != 0xD8)
1317 return -EINVAL;
1318
1319 while (notfound) {
1320 byte = get_byte(&stream);
1321 if (byte == -1)
1322 return -EINVAL;
1323 if (byte != 0xff)
1324 continue;
1325 do {
1326 byte = get_byte(&stream);
1327 } while (byte == 0xff);
1328 if (byte == -1)
1329 return false;
1330 if (byte == 0)
1331 continue;
1332 switch (byte) {
1333 case DHT:
1334 /* DHT marker present, no need to inject default one */
1335 *dht_needed = false;
1336 break;
1337 case SOF2: /* Progressive DCF frame definition */
1338 dev_err(dev,
1339 "Progressive JPEG not supported by hardware");
1340 return -EINVAL;
1341 case SOF1: /* Extended sequential DCF frame definition */
1342 case SOF0: /* Baseline sequential DCF frame definition */
1343 if (get_sof(dev, &stream, &sof) == -1)
1344 break;
1345 next = stream.addr + stream.loc;
1346 psof = (struct mxc_jpeg_sof *)next;
1347 break;
1348 case SOS:
1349 next = stream.addr + stream.loc;
1350 psos = (struct mxc_jpeg_sos *)next;
1351 notfound = false;
1352 break;
1353 case APP14:
1354 app14 = true;
1355 /*
1356 * Application Data Syntax is:
1357 * 2 bytes(APPn:0xFF,0xEE), 2 bytes(Lp), Ap1...ApLp-2
1358 * The transform flag is in Ap12
1359 * stream.loc is now on APPn-0xEE byte
1360 */
1361 app14_transform = *(stream.addr + stream.loc + 12 + 1);
1362 break;
1363 default:
1364 notfound = true;
1365 }
1366 }
1367 q_data_out = mxc_jpeg_get_q_data(ctx,
1368 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
1369 if (q_data_out->w == 0 && q_data_out->h == 0) {
1370 dev_warn(dev, "Invalid user resolution 0x0");
1371 dev_warn(dev, "Keeping resolution from JPEG: %dx%d",
1372 sof.width, sof.height);
> 1373 q_data_out->w = sof.width;
1374 q_data_out->h = sof.height;
1375 } else if (sof.width != q_data_out->w || sof.height != q_data_out->h) {
1376 dev_err(dev,
1377 "Resolution mismatch: %dx%d (JPEG) versus %dx%d(user)",
1378 sof.width, sof.height, q_data_out->w, q_data_out->h);
1379 return -EINVAL;
1380 }
1381 if (sof.width % 8 != 0 || sof.height % 8 != 0) {
1382 dev_err(dev, "JPEG width or height not multiple of 8: %dx%d\n",
1383 sof.width, sof.height);
1384 return -EINVAL;
1385 }
1386 if (sof.width > MXC_JPEG_MAX_WIDTH ||
1387 sof.height > MXC_JPEG_MAX_HEIGHT) {
1388 dev_err(dev, "JPEG width or height should be <= 8192: %dx%d\n",
1389 sof.width, sof.height);
1390 return -EINVAL;
1391 }
1392 if (sof.width < MXC_JPEG_MIN_WIDTH ||
1393 sof.height < MXC_JPEG_MIN_HEIGHT) {
1394 dev_err(dev, "JPEG width or height should be > 64: %dx%d\n",
1395 sof.width, sof.height);
1396 return -EINVAL;
1397 }
1398 if (sof.components_no > MXC_JPEG_MAX_COMPONENTS) {
1399 dev_err(dev, "JPEG number of components should be <=%d",
1400 MXC_JPEG_MAX_COMPONENTS);
1401 return -EINVAL;
1402 }
1403 /* check and, if necessary, patch component IDs*/
1404 if (!mxc_jpeg_valid_comp_id(dev, psof, psos))
1405 dev_warn(dev, "JPEG component ids should be 0-3 or 1-4");
1406
1407 img_fmt = mxc_jpeg_get_image_format(dev, &sof);
1408 if (img_fmt == MXC_JPEG_INVALID)
1409 return -EINVAL;
1410
1411 /*
1412 * If the transform flag from APP14 marker is 0, images that are
1413 * encoded with 3 components have RGB colorspace, see Recommendation
1414 * ITU-T T.872 chapter 6.5.3 APP14 marker segment for colour encoding
1415 */
1416 if (img_fmt == MXC_JPEG_YUV444 && app14 && app14_transform == 0)
1417 img_fmt = MXC_JPEG_RGB;
1418
1419 if (mxc_jpeg_imgfmt_to_fourcc(img_fmt, &fourcc)) {
1420 dev_err(dev, "Fourcc not found for %d", img_fmt);
1421 return -EINVAL;
1422 }
1423
1424 /*
1425 * set-up the capture queue with the pixelformat and resolution
1426 * detected from the jpeg output stream
1427 */
1428 q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
1429 if (q_data_cap->w != sof.width || q_data_cap->h != sof.height)
1430 src_chg = true;
1431 q_data_cap->w = sof.width;
1432 q_data_cap->h = sof.height;
1433 q_data_cap->fmt = mxc_jpeg_find_format(ctx, fourcc);
1434 q_data_cap->w_adjusted = q_data_cap->w;
1435 q_data_cap->h_adjusted = q_data_cap->h;
1436 /*
1437 * align up the resolution for CAST IP,
1438 * but leave the buffer resolution unchanged
1439 */
1440 v4l_bound_align_image(&q_data_cap->w_adjusted,
1441 q_data_cap->w_adjusted, /* adjust up */
1442 MXC_JPEG_MAX_WIDTH,
1443 q_data_cap->fmt->h_align,
1444 &q_data_cap->h_adjusted,
1445 q_data_cap->h_adjusted, /* adjust up */
1446 MXC_JPEG_MAX_HEIGHT,
1447 q_data_cap->fmt->v_align,
1448 0);
1449 dev_dbg(dev, "Detected jpeg res=(%dx%d)->(%dx%d), pixfmt=%c%c%c%c\n",
1450 q_data_cap->w, q_data_cap->h,
1451 q_data_cap->w_adjusted, q_data_cap->h_adjusted,
1452 (fourcc & 0xff),
1453 (fourcc >> 8) & 0xff,
1454 (fourcc >> 16) & 0xff,
1455 (fourcc >> 24) & 0xff);
1456
1457 /* setup bytesperline/sizeimage for capture queue */
1458 mxc_jpeg_bytesperline(q_data_cap, sof.precision);
1459 mxc_jpeg_sizeimage(q_data_cap);
1460
1461 /*
1462 * if the CAPTURE format was updated with new values, regardless of
1463 * whether they match the values set by the client or not, signal
1464 * a source change event
1465 */
1466 if (src_chg)
1467 notify_src_chg(ctx);
1468
1469 return 0;
1470 }
1471
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 32166 bytes --]
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
2021-01-11 19:28 ` [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
` (2 preceding siblings ...)
2021-01-20 11:07 ` kernel test robot
@ 2021-01-20 13:52 ` kernel test robot
3 siblings, 0 replies; 20+ messages in thread
From: kernel test robot @ 2021-01-20 13:52 UTC (permalink / raw)
To: Mirela Rabulea, mchehab, hverkuil-cisco, shawnguo, robh+dt, p.zabel
Cc: kbuild-all, paul.kocialkowski, linux-media, linux-kernel,
linux-imx, s.hauer
[-- Attachment #1: Type: text/plain, Size: 8089 bytes --]
Hi Mirela,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on shawnguo/for-next robh/for-next linus/master v5.11-rc4 next-20210120]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Mirela-Rabulea/Add-V4L2-driver-for-i-MX8-JPEG-Encoder-Decoder/20210112-033507
base: git://linuxtv.org/media_tree.git master
config: h8300-randconfig-r031-20210120 (attached as .config)
compiler: h8300-linux-gcc (GCC) 9.3.0
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
# https://github.com/0day-ci/linux/commit/ba3dd916aaab157090febdfc656fc2a8b6379aa6
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Mirela-Rabulea/Add-V4L2-driver-for-i-MX8-JPEG-Encoder-Decoder/20210112-033507
git checkout ba3dd916aaab157090febdfc656fc2a8b6379aa6
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=h8300
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/kernel.h:10,
from drivers/media/platform/imx-jpeg/mxc-jpeg.c:43:
include/linux/scatterlist.h: In function 'sg_set_buf':
include/asm-generic/page.h:93:50: warning: ordered comparison of pointer with null pointer [-Wextra]
93 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
| ^~
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
include/linux/scatterlist.h:137:2: note: in expansion of macro 'BUG_ON'
137 | BUG_ON(!virt_addr_valid(buf));
| ^~~~~~
include/linux/scatterlist.h:137:10: note: in expansion of macro 'virt_addr_valid'
137 | BUG_ON(!virt_addr_valid(buf));
| ^~~~~~~~~~~~~~~
In file included from include/linux/device.h:15,
from include/linux/of_platform.h:9,
from drivers/media/platform/imx-jpeg/mxc-jpeg.c:47:
drivers/media/platform/imx-jpeg/mxc-jpeg.c: In function 'mxc_jpeg_config_enc_desc':
>> drivers/media/platform/imx-jpeg/mxc-jpeg.c:891:21: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'dma_addr_t' {aka 'unsigned int'} [-Wformat=]
891 | dev_dbg(jpeg->dev, "cfg_desc - 0x%llx:\n", cfg_desc_handle);
| ^~~~~~~~~~~~~~~~~~~~~~
include/linux/dev_printk.h:19:22: note: in definition of macro 'dev_fmt'
19 | #define dev_fmt(fmt) fmt
| ^~~
drivers/media/platform/imx-jpeg/mxc-jpeg.c:891:2: note: in expansion of macro 'dev_dbg'
891 | dev_dbg(jpeg->dev, "cfg_desc - 0x%llx:\n", cfg_desc_handle);
| ^~~~~~~
drivers/media/platform/imx-jpeg/mxc-jpeg.c:891:38: note: format string is defined here
891 | dev_dbg(jpeg->dev, "cfg_desc - 0x%llx:\n", cfg_desc_handle);
| ~~~^
| |
| long long unsigned int
| %x
In file included from include/linux/device.h:15,
from include/linux/of_platform.h:9,
from drivers/media/platform/imx-jpeg/mxc-jpeg.c:47:
drivers/media/platform/imx-jpeg/mxc-jpeg.c:893:21: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'dma_addr_t' {aka 'unsigned int'} [-Wformat=]
893 | dev_dbg(jpeg->dev, "enc desc - 0x%llx:\n", desc_handle);
| ^~~~~~~~~~~~~~~~~~~~~~
include/linux/dev_printk.h:19:22: note: in definition of macro 'dev_fmt'
19 | #define dev_fmt(fmt) fmt
| ^~~
drivers/media/platform/imx-jpeg/mxc-jpeg.c:893:2: note: in expansion of macro 'dev_dbg'
893 | dev_dbg(jpeg->dev, "enc desc - 0x%llx:\n", desc_handle);
| ^~~~~~~
drivers/media/platform/imx-jpeg/mxc-jpeg.c:893:38: note: format string is defined here
893 | dev_dbg(jpeg->dev, "enc desc - 0x%llx:\n", desc_handle);
| ~~~^
| |
| long long unsigned int
| %x
drivers/media/platform/imx-jpeg/mxc-jpeg.c: In function 'mxc_jpeg_probe':
>> drivers/media/platform/imx-jpeg/mxc-jpeg.c:2140:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
2140 | mode = (int)(u64)of_id->data;
| ^
vim +891 drivers/media/platform/imx-jpeg/mxc-jpeg.c
840
841 static void mxc_jpeg_config_enc_desc(struct vb2_buffer *out_buf,
842 struct mxc_jpeg_ctx *ctx,
843 struct vb2_buffer *src_buf,
844 struct vb2_buffer *dst_buf)
845 {
846 struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
847 void __iomem *reg = jpeg->base_reg;
848 unsigned int slot = ctx->slot;
849 struct mxc_jpeg_desc *desc = jpeg->slot_data[slot].desc;
850 struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data[slot].cfg_desc;
851 dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
852 dma_addr_t cfg_desc_handle = jpeg->slot_data[slot].cfg_desc_handle;
853 void *cfg_stream_vaddr = jpeg->slot_data[slot].cfg_stream_vaddr;
854 struct mxc_jpeg_q_data *q_data;
855 enum mxc_jpeg_image_format img_fmt;
856 int w, h;
857
858 q_data = mxc_jpeg_get_q_data(ctx, src_buf->vb2_queue->type);
859
860 jpeg->slot_data[slot].cfg_stream_size =
861 mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
862 q_data->fmt->fourcc,
863 q_data->w_adjusted,
864 q_data->h_adjusted);
865
866 /* chain the config descriptor with the encoding descriptor */
867 cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
868
869 cfg_desc->buf_base0 = jpeg->slot_data[slot].cfg_stream_handle;
870 cfg_desc->buf_base1 = 0;
871 cfg_desc->line_pitch = 0;
872 cfg_desc->stm_bufbase = 0; /* no output expected */
873 cfg_desc->stm_bufsize = 0x0;
874 cfg_desc->imgsize = 0;
875 cfg_desc->stm_ctrl = STM_CTRL_CONFIG_MOD(1);
876
877 desc->next_descpt_ptr = 0; /* end of chain */
878
879 /* use adjusted resolution for CAST IP job */
880 w = q_data->w_adjusted;
881 h = q_data->h_adjusted;
882 mxc_jpeg_set_res(desc, w, h);
883 mxc_jpeg_set_line_pitch(desc, w * (q_data->fmt->depth / 8));
884 mxc_jpeg_set_bufsize(desc, desc->line_pitch * h);
885 img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data->fmt->fourcc);
886 if (img_fmt == MXC_JPEG_INVALID)
887 dev_err(jpeg->dev, "No valid image format detected\n");
888 desc->stm_ctrl = STM_CTRL_CONFIG_MOD(0) |
889 STM_CTRL_IMAGE_FORMAT(img_fmt);
890 mxc_jpeg_addrs(desc, src_buf, dst_buf, 0);
> 891 dev_dbg(jpeg->dev, "cfg_desc - 0x%llx:\n", cfg_desc_handle);
892 print_descriptor_info(jpeg->dev, cfg_desc);
893 dev_dbg(jpeg->dev, "enc desc - 0x%llx:\n", desc_handle);
894 print_descriptor_info(jpeg->dev, desc);
895 print_wrapper_info(jpeg->dev, reg);
896 print_cast_status(jpeg->dev, reg, MXC_JPEG_ENCODE);
897
898 /* validate the configuration descriptor */
899 mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
900 }
901
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [EXT] Re: [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
2021-01-19 10:31 ` Hans Verkuil
@ 2021-02-22 19:09 ` Mirela Rabulea
2021-03-04 13:03 ` Hans Verkuil
0 siblings, 1 reply; 20+ messages in thread
From: Mirela Rabulea @ 2021-02-22 19:09 UTC (permalink / raw)
To: p.zabel, mchehab, Mirela Rabulea (OSS),
hverkuil-cisco, shawnguo, robh+dt
Cc: linux-media, Robert Chiras, dl-linux-imx, s.hauer,
Laurentiu Palcu, mark.rutland, linux-kernel, Daniel Baluta,
paul.kocialkowski, niklas.soderlund+renesas, devicetree,
Aisheng Dong, ezequiel, laurent.pinchart+renesas,
dafna.hirschfeld
Hi Hans,
appologies for my late response, please see below 2 comments.
On Tue, 2021-01-19 at 11:31 +0100, Hans Verkuil wrote:
> Caution: EXT Email
>
> On 11/01/2021 20:28, Mirela Rabulea wrote:
> > From: Mirela Rabulea <mirela.rabulea@nxp.com>
> >
> > V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM
> > application
> > processors.
> > The multi-planar buffers API is used.
> >
> > Baseline and extended sequential jpeg decoding is supported.
> > Progressive jpeg decoding is not supported by the IP.
> > Supports encode and decode of various formats:
> > YUV444, YUV422, YUV420, RGB, ARGB, Gray
> > YUV420 is the only multi-planar format supported.
> > Minimum resolution is 64 x 64, maximum 8192 x 8192.
> > The alignment requirements for the resolution depend on the format,
> > multiple of 16 resolutions should work for all formats.
> >
> > v4l2-compliance tests are passing, including the
> > streaming tests, "v4l2-compliance -s"
> >
> > Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
> > ---
> > Changes in v7:
> > Add print_mxc_buf() to replace print_buf_preview() and
> > print_nbuf_to_eoi(),
> > and inside, use the print_hex_dump() from printk.h, also, print
> > all the planes.
> >
> > drivers/media/platform/Kconfig | 2 +
> > drivers/media/platform/Makefile | 1 +
> > drivers/media/platform/imx-jpeg/Kconfig | 10 +
> > drivers/media/platform/imx-jpeg/Makefile | 3 +
> > drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c | 168 ++
> > drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h | 140 +
> > drivers/media/platform/imx-jpeg/mxc-jpeg.c | 2289
> > +++++++++++++++++
> > drivers/media/platform/imx-jpeg/mxc-jpeg.h | 184 ++
> > 8 files changed, 2797 insertions(+)
> > create mode 100644 drivers/media/platform/imx-jpeg/Kconfig
> > create mode 100644 drivers/media/platform/imx-jpeg/Makefile
> > create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
> > create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
> > create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.c
> > create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.h
>
> One high-level comment: why introduce the driver in patch 3/9 and
> then
> change it again in 9/9? I would very much prefer to have just a
> single
> patch that adds this driver, i.e. merge patch 3 and 9 into a single
> patch.
I can squash patch 9 into patch 3, but please note that patch 9 depends
on jpeg helper patches 6,7,8, so these patches will also have to move
before patch 3. Let me know yout thought and I'll do this in v9, in v8
version I only addressed the rest of your feedback and some more from
Philipp.
>
> > diff --git a/drivers/media/platform/Kconfig
> > b/drivers/media/platform/Kconfig
> > index e419b18613c6..6244e573aea5 100644
> > --- a/drivers/media/platform/Kconfig
> > +++ b/drivers/media/platform/Kconfig
> > @@ -239,6 +239,8 @@ config VIDEO_IMX_PXP
> > The i.MX Pixel Pipeline is a memory-to-memory engine for
> > scaling,
> > color space conversion, and rotation.
> >
> > +source "drivers/media/platform/imx-jpeg/Kconfig"
> > +
> > config VIDEO_MEDIATEK_JPEG
> > tristate "Mediatek JPEG Codec driver"
> > depends on MTK_IOMMU_V1 || MTK_IOMMU || COMPILE_TEST
> > diff --git a/drivers/media/platform/Makefile
> > b/drivers/media/platform/Makefile
> > index 9d4d6370908d..eedc14aafb32 100644
> > --- a/drivers/media/platform/Makefile
> > +++ b/drivers/media/platform/Makefile
> > @@ -21,6 +21,7 @@ obj-$(CONFIG_VIDEO_MX2_EMMAPRP) +=
> > mx2_emmaprp.o
> > obj-$(CONFIG_VIDEO_CODA) += coda/
> >
> > obj-$(CONFIG_VIDEO_IMX_PXP) += imx-pxp.o
> > +obj-$(CONFIG_VIDEO_IMX8_JPEG) += imx-jpeg/
> >
> > obj-$(CONFIG_VIDEO_MEM2MEM_DEINTERLACE) += m2m-deinterlace.o
> >
> > diff --git a/drivers/media/platform/imx-jpeg/Kconfig
> > b/drivers/media/platform/imx-jpeg/Kconfig
> > new file mode 100644
> > index 000000000000..7cc89e5eff90
> > --- /dev/null
> > +++ b/drivers/media/platform/imx-jpeg/Kconfig
> > @@ -0,0 +1,10 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +config VIDEO_IMX8_JPEG
> > + tristate "IMX8 JPEG Encoder/Decoder"
> > + depends on VIDEO_DEV && VIDEO_V4L2
> > + select VIDEOBUF2_DMA_CONTIG
> > + select V4L2_MEM2MEM_DEV
> > + default m
> > + help
> > + This is a video4linux2 driver for the i.MX8 QXP/QM
> > integrated
> > + JPEG encoder/decoder.
> > diff --git a/drivers/media/platform/imx-jpeg/Makefile
> > b/drivers/media/platform/imx-jpeg/Makefile
> > new file mode 100644
> > index 000000000000..bf19c82e61b4
> > --- /dev/null
> > +++ b/drivers/media/platform/imx-jpeg/Makefile
> > @@ -0,0 +1,3 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +mxc-jpeg-encdec-objs := mxc-jpeg-hw.o mxc-jpeg.o
> > +obj-$(CONFIG_VIDEO_IMX8_JPEG) += mxc-jpeg-encdec.o
> > diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
> > b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
> > new file mode 100644
> > index 000000000000..29c604b1b179
> > --- /dev/null
> > +++ b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
> > @@ -0,0 +1,168 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
> > + *
> > + * Copyright 2018-2019 NXP
> > + */
> > +
> > +#include <linux/delay.h>
> > +#include <media/videobuf2-core.h>
> > +#include "mxc-jpeg-hw.h"
> > +
> > +#define print_wrapper_reg(dev, base_address, reg_offset)\
> > + internal_print_wrapper_reg(dev, (base_address),
> > #reg_offset,\
> > + (reg_offset))
> > +#define internal_print_wrapper_reg(dev, base_address, reg_name,
> > reg_offset) {\
> > + int val;\
> > + val = readl((base_address) + (reg_offset));\
> > + dev_dbg(dev, "Wrapper reg %s = 0x%x\n", reg_name,
> > val);\
> > +}
> > +
> > +void print_descriptor_info(struct device *dev, struct
> > mxc_jpeg_desc *desc)
> > +{
> > + dev_dbg(dev, " MXC JPEG NEXT_DESCPT_PTR 0x%x\n",
> > + desc->next_descpt_ptr);
> > + dev_dbg(dev, " MXC JPEG BUF_BASE0 0x%x\n", desc->buf_base0);
> > + dev_dbg(dev, " MXC JPEG BUF_BASE1 0x%x\n", desc->buf_base1);
> > + dev_dbg(dev, " MXC JPEG LINE_PITCH %d\n", desc->line_pitch);
> > + dev_dbg(dev, " MXC JPEG STM_BUFBASE 0x%x\n", desc-
> > >stm_bufbase);
> > + dev_dbg(dev, " MXC JPEG STM_BUFSIZE %d\n", desc-
> > >stm_bufsize);
> > + dev_dbg(dev, " MXC JPEG IMGSIZE %x (%d x %d)\n", desc-
> > >imgsize,
> > + desc->imgsize >> 16, desc->imgsize & 0xFFFF);
> > + dev_dbg(dev, " MXC JPEG STM_CTRL 0x%x\n", desc->stm_ctrl);
> > +}
> > +
> > +void print_cast_status(struct device *dev, void __iomem *reg,
> > + unsigned int mode)
> > +{
> > + dev_dbg(dev, "CAST IP status regs:\n");
> > + print_wrapper_reg(dev, reg, CAST_STATUS0);
> > + print_wrapper_reg(dev, reg, CAST_STATUS1);
> > + print_wrapper_reg(dev, reg, CAST_STATUS2);
> > + print_wrapper_reg(dev, reg, CAST_STATUS3);
> > + print_wrapper_reg(dev, reg, CAST_STATUS4);
> > + print_wrapper_reg(dev, reg, CAST_STATUS5);
> > + print_wrapper_reg(dev, reg, CAST_STATUS6);
> > + print_wrapper_reg(dev, reg, CAST_STATUS7);
> > + print_wrapper_reg(dev, reg, CAST_STATUS8);
> > + print_wrapper_reg(dev, reg, CAST_STATUS9);
> > + print_wrapper_reg(dev, reg, CAST_STATUS10);
> > + print_wrapper_reg(dev, reg, CAST_STATUS11);
> > + print_wrapper_reg(dev, reg, CAST_STATUS12);
> > + print_wrapper_reg(dev, reg, CAST_STATUS13);
> > + if (mode == MXC_JPEG_DECODE)
> > + return;
> > + print_wrapper_reg(dev, reg, CAST_STATUS14);
> > + print_wrapper_reg(dev, reg, CAST_STATUS15);
> > + print_wrapper_reg(dev, reg, CAST_STATUS16);
> > + print_wrapper_reg(dev, reg, CAST_STATUS17);
> > + print_wrapper_reg(dev, reg, CAST_STATUS18);
> > + print_wrapper_reg(dev, reg, CAST_STATUS19);
> > +}
> > +
> > +void print_wrapper_info(struct device *dev, void __iomem *reg)
> > +{
> > + dev_dbg(dev, "Wrapper regs:\n");
> > + print_wrapper_reg(dev, reg, GLB_CTRL);
> > + print_wrapper_reg(dev, reg, COM_STATUS);
> > + print_wrapper_reg(dev, reg, BUF_BASE0);
> > + print_wrapper_reg(dev, reg, BUF_BASE1);
> > + print_wrapper_reg(dev, reg, LINE_PITCH);
> > + print_wrapper_reg(dev, reg, STM_BUFBASE);
> > + print_wrapper_reg(dev, reg, STM_BUFSIZE);
> > + print_wrapper_reg(dev, reg, IMGSIZE);
> > + print_wrapper_reg(dev, reg, STM_CTRL);
> > +}
> > +
> > +void mxc_jpeg_enable_irq(void __iomem *reg, int slot)
> > +{
> > + writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_IRQ_EN));
> > +}
> > +
> > +void mxc_jpeg_sw_reset(void __iomem *reg)
> > +{
> > + /*
> > + * engine soft reset, internal state machine reset
> > + * this will not reset registers, however, it seems
> > + * the registers may remain inconsistent with the internal
> > state
> > + * so, on purpose, at least let GLB_CTRL bits clear after
> > this reset
> > + */
> > + writel(GLB_CTRL_SFT_RST, reg + GLB_CTRL);
> > +}
> > +
> > +void mxc_jpeg_enc_mode_conf(struct device *dev, void __iomem *reg)
> > +{
> > + dev_dbg(dev, "CAST Encoder CONFIG...\n");
> > + /*
> > + * "Config_Mode" enabled, "Config_Mode auto clear enabled",
> > + */
> > + writel(0xa0, reg + CAST_MODE);
> > +
> > + /* all markers and segments */
> > + writel(0x3ff, reg + CAST_CFG_MODE);
> > +
> > + /* quality factor */
> > + writel(0x4b, reg + CAST_QUALITY);
> > +}
> > +
> > +void mxc_jpeg_enc_mode_go(struct device *dev, void __iomem *reg)
> > +{
> > + dev_dbg(dev, "CAST Encoder GO...\n");
> > + /*
> > + * "GO" enabled, "GO bit auto clear" enabled
> > + */
> > + writel(0x140, reg + CAST_MODE);
> > +}
> > +
> > +void mxc_jpeg_dec_mode_go(struct device *dev, void __iomem *reg)
> > +{
> > + dev_dbg(dev, "CAST Decoder GO...\n");
> > + writel(MXC_DEC_EXIT_IDLE_MODE, reg + CAST_CTRL);
> > +}
> > +
> > +int mxc_jpeg_enable(void __iomem *reg)
> > +{
> > + u32 regval;
> > +
> > + writel(GLB_CTRL_JPG_EN, reg + GLB_CTRL);
> > + regval = readl(reg);
> > + return regval;
> > +}
> > +
> > +void mxc_jpeg_enable_slot(void __iomem *reg, int slot)
> > +{
> > + u32 regval;
> > +
> > + regval = readl(reg + GLB_CTRL);
> > + writel(GLB_CTRL_SLOT_EN(slot) | regval, reg + GLB_CTRL);
> > +}
> > +
> > +void mxc_jpeg_set_l_endian(void __iomem *reg, int le)
> > +{
> > + u32 regval;
> > +
> > + regval = readl(reg + GLB_CTRL);
> > + regval &= ~GLB_CTRL_L_ENDIAN(1); /* clear */
> > + writel(GLB_CTRL_L_ENDIAN(le) | regval, reg + GLB_CTRL); /*
> > set */
> > +}
> > +
> > +void mxc_jpeg_set_bufsize(struct mxc_jpeg_desc *desc, u32
> > bufsize)
> > +{
> > + desc->stm_bufsize = bufsize;
> > +}
> > +
> > +void mxc_jpeg_set_res(struct mxc_jpeg_desc *desc, u16 w, u16 h)
> > +{
> > + desc->imgsize = w << 16 | h;
> > +}
> > +
> > +void mxc_jpeg_set_line_pitch(struct mxc_jpeg_desc *desc, u32
> > line_pitch)
> > +{
> > + desc->line_pitch = line_pitch;
> > +}
> > +
> > +void mxc_jpeg_set_desc(u32 desc, void __iomem *reg, int slot)
> > +{
> > + writel(desc | MXC_NXT_DESCPT_EN,
> > + reg + MXC_SLOT_OFFSET(slot, SLOT_NXT_DESCPT_PTR));
> > +}
> > diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
> > b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
> > new file mode 100644
> > index 000000000000..ae70d3a0dc24
> > --- /dev/null
> > +++ b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
> > @@ -0,0 +1,140 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
> > + *
> > + * Copyright 2018-2019 NXP
> > + */
> > +
> > +#ifndef _MXC_JPEG_HW_H
> > +#define _MXC_JPEG_HW_H
> > +
> > +/* JPEG Decoder/Encoder Wrapper Register Map */
> > +#define GLB_CTRL 0x0
> > +#define COM_STATUS 0x4
> > +#define BUF_BASE0 0x14
> > +#define BUF_BASE1 0x18
> > +#define LINE_PITCH 0x1C
> > +#define STM_BUFBASE 0x20
> > +#define STM_BUFSIZE 0x24
> > +#define IMGSIZE 0x28
> > +#define STM_CTRL 0x2C
> > +
> > +/* CAST JPEG-Decoder/Encoder Status Register Map (read-only)*/
> > +#define CAST_STATUS0 0x100
> > +#define CAST_STATUS1 0x104
> > +#define CAST_STATUS2 0x108
> > +#define CAST_STATUS3 0x10c
> > +#define CAST_STATUS4 0x110
> > +#define CAST_STATUS5 0x114
> > +#define CAST_STATUS6 0x118
> > +#define CAST_STATUS7 0x11c
> > +#define CAST_STATUS8 0x120
> > +#define CAST_STATUS9 0x124
> > +#define CAST_STATUS10 0x128
> > +#define CAST_STATUS11 0x12c
> > +#define CAST_STATUS12 0x130
> > +#define CAST_STATUS13 0x134
> > +/* the following are for encoder only */
> > +#define CAST_STATUS14 0x138
> > +#define CAST_STATUS15 0x13c
> > +#define CAST_STATUS16 0x140
> > +#define CAST_STATUS17 0x144
> > +#define CAST_STATUS18 0x148
> > +#define CAST_STATUS19 0x14c
> > +
> > +/* CAST JPEG-Decoder Control Register Map (write-only) */
> > +#define CAST_CTRL CAST_STATUS13
> > +
> > +/* CAST JPEG-Encoder Control Register Map (write-only) */
> > +#define CAST_MODE CAST_STATUS0
> > +#define CAST_CFG_MODE CAST_STATUS1
> > +#define CAST_QUALITY CAST_STATUS2
> > +#define CAST_RSVD CAST_STATUS3
> > +#define CAST_REC_REGS_SEL CAST_STATUS4
> > +#define CAST_LUMTH CAST_STATUS5
> > +#define CAST_CHRTH CAST_STATUS6
> > +#define CAST_NOMFRSIZE_LO CAST_STATUS7
> > +#define CAST_NOMFRSIZE_HI CAST_STATUS8
> > +#define CAST_OFBSIZE_LO CAST_STATUS9
> > +#define CAST_OFBSIZE_HI CAST_STATUS10
> > +
> > +#define MXC_MAX_SLOTS 1 /* TODO use all 4 slots*/
> > +/* JPEG-Decoder Wrapper Slot Registers 0..3 */
> > +#define SLOT_BASE 0x10000
> > +#define SLOT_STATUS 0x0
> > +#define SLOT_IRQ_EN 0x4
> > +#define SLOT_BUF_PTR 0x8
> > +#define SLOT_CUR_DESCPT_PTR 0xC
> > +#define SLOT_NXT_DESCPT_PTR 0x10
> > +#define MXC_SLOT_OFFSET(slot, offset) ((SLOT_BASE * ((slot)
> > + 1)) + (offset))
> > +
> > +/* GLB_CTRL fields */
> > +#define GLB_CTRL_JPG_EN 0x1
> > +#define GLB_CTRL_SFT_RST (0x1 << 1)
> > +#define GLB_CTRL_DEC_GO (0x1
> > << 2)
> > +#define GLB_CTRL_L_ENDIAN(le) ((le)
> > << 3)
> > +#define GLB_CTRL_SLOT_EN(slot) (0x1
> > << ((slot) + 4))
> > +
> > +/* COM_STAUS fields */
> > +#define COM_STATUS_DEC_ONGOING(r) (((r) & (1 << 31)) >>
> > 31)
> > +#define COM_STATUS_CUR_SLOT(r) (((r) & (0x3
> > << 29)) >> 29)
> > +
> > +/* STM_CTRL fields */
> > +#define STM_CTRL_PIXEL_PRECISION (0x1 << 2)
> > +#define STM_CTRL_IMAGE_FORMAT(img_fmt) ((img_fmt) <<
> > 3)
> > +#define STM_CTRL_IMAGE_FORMAT_MASK (0xF << 3)
> > +#define STM_CTRL_BITBUF_PTR_CLR(clr) ((clr) << 7)
> > +#define STM_CTRL_AUTO_START(go) ((go) << 8)
> > +#define STM_CTRL_CONFIG_MOD(mod) ((mod) << 9)
> > +
> > +/* SLOT_STATUS fields for slots 0..3 */
> > +#define SLOT_STATUS_FRMDONE (0x1 << 3)
> > +#define SLOT_STATUS_ENC_CONFIG_ERR (0x1 << 8)
> > +
> > +/* SLOT_IRQ_EN fields TBD */
> > +
> > +#define MXC_NXT_DESCPT_EN 0x1
> > +#define MXC_DEC_EXIT_IDLE_MODE 0x4
> > +
> > +/* JPEG-Decoder Wrapper - STM_CTRL Register Fields */
> > +#define MXC_PIXEL_PRECISION(precision) ((precision) / 8 << 2)
> > +enum mxc_jpeg_image_format {
> > + MXC_JPEG_INVALID = -1,
> > + MXC_JPEG_YUV420 = 0x0, /* 2 Plannar, Y=1st plane UV=2nd plane
> > */
> > + MXC_JPEG_YUV422 = 0x1, /* 1 Plannar, YUYV sequence */
> > + MXC_JPEG_RGB = 0x2, /* RGBRGB packed format */
> > + MXC_JPEG_YUV444 = 0x3, /* 1 Plannar, YUVYUV sequence */
> > + MXC_JPEG_GRAY = 0x4, /* Y8 or Y12 or Single Component */
> > + MXC_JPEG_RESERVED = 0x5,
> > + MXC_JPEG_ARGB = 0x6,
> > +};
> > +
> > +#include "mxc-jpeg.h"
> > +void print_descriptor_info(struct device *dev, struct
> > mxc_jpeg_desc *desc);
> > +void print_cast_status(struct device *dev, void __iomem *reg,
> > + unsigned int mode);
> > +void print_wrapper_info(struct device *dev, void __iomem *reg);
> > +void mxc_jpeg_sw_reset(void __iomem *reg);
> > +int mxc_jpeg_enable(void __iomem *reg);
> > +void wait_frmdone(struct device *dev, void __iomem *reg);
> > +void mxc_jpeg_enc_mode_conf(struct device *dev, void __iomem
> > *reg);
> > +void mxc_jpeg_enc_mode_go(struct device *dev, void __iomem *reg);
> > +void mxc_jpeg_dec_mode_go(struct device *dev, void __iomem *reg);
> > +int mxc_jpeg_get_slot(void __iomem *reg);
> > +u32 mxc_jpeg_get_offset(void __iomem *reg, int slot);
> > +void mxc_jpeg_enable_slot(void __iomem *reg, int slot);
> > +void mxc_jpeg_set_l_endian(void __iomem *reg, int le);
> > +void mxc_jpeg_enable_irq(void __iomem *reg, int slot);
> > +int mxc_jpeg_set_input(void __iomem *reg, u32 in_buf, u32
> > bufsize);
> > +int mxc_jpeg_set_output(void __iomem *reg, u16 out_pitch, u32
> > out_buf,
> > + u16 w, u16 h);
> > +void mxc_jpeg_set_config_mode(void __iomem *reg, int config_mode);
> > +int mxc_jpeg_set_params(struct mxc_jpeg_desc *desc, u32 bufsize,
> > u16
> > + out_pitch, u32 format);
> > +void mxc_jpeg_set_bufsize(struct mxc_jpeg_desc *desc, u32
> > bufsize);
> > +void mxc_jpeg_set_res(struct mxc_jpeg_desc *desc, u16 w, u16 h);
> > +void mxc_jpeg_set_line_pitch(struct mxc_jpeg_desc *desc, u32
> > line_pitch);
> > +void mxc_jpeg_set_desc(u32 desc, void __iomem *reg, int slot);
> > +void mxc_jpeg_set_regs_from_desc(struct mxc_jpeg_desc *desc,
> > + void __iomem *reg);
> > +#endif
> > diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.c
> > b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
> > new file mode 100644
> > index 000000000000..9f1052779c58
> > --- /dev/null
> > +++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
> > @@ -0,0 +1,2289 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM
> > application
> > + * processors.
> > + *
> > + * The multi-planar buffers API is used.
> > + *
> > + * Baseline and extended sequential jpeg decoding is supported.
> > + * Progressive jpeg decoding is not supported by the IP.
> > + * Supports encode and decode of various formats:
> > + * YUV444, YUV422, YUV420, RGB, ARGB, Gray
> > + * YUV420 is the only multi-planar format supported.
> > + * Minimum resolution is 64 x 64, maximum 8192 x 8192.
> > + * To achieve 8192 x 8192, modify in defconfig:
> > CONFIG_CMA_SIZE_MBYTES=320
> > + * The alignment requirements for the resolution depend on the
> > format,
> > + * multiple of 16 resolutions should work for all formats.
> > + * Special workarounds are made in the driver to support NV12
> > 1080p.
> > + * When decoding, the driver detects image resolution and pixel
> > format
> > + * from the jpeg stream, by parsing the jpeg markers.
> > + *
> > + * The IP has 4 slots available for context switching, but only
> > slot 0
> > + * was fully tested to work. Context switching is not used by the
> > driver.
> > + * Each driver instance (context) allocates a slot for itself, but
> > this
> > + * is postponed until device_run, to allow unlimited opens.
> > + *
> > + * The driver submits jobs to the IP by setting up a descriptor
> > for the
> > + * used slot, and then validating it. The encoder has an
> > additional descriptor
> > + * for the configuration phase. The driver expects FRM_DONE
> > interrupt from
> > + * IP to mark the job as finished.
> > + *
> > + * The decoder IP has some limitations regarding the component
> > ID's,
> > + * but the driver works around this by replacing them in the jpeg
> > stream.
> > + *
> > + * A module parameter is available for debug purpose
> > (jpeg_tracing), to enable
> > + * it, enable dynamic debug for this module and:
> > + * echo 1 > /sys/module/mxc_jpeg_encdec/parameters/jpeg_tracing
> > + *
> > + * This is inspired by the drivers/media/platform/s5p-jpeg driver
> > + *
> > + * Copyright 2018-2019 NXP
> > + */
> > +
> > +#include <linux/kernel.h>
> > +#include <linux/module.h>
> > +#include <linux/io.h>
> > +#include <linux/clk.h>
> > +#include <linux/of_platform.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/slab.h>
> > +#include <linux/irqreturn.h>
> > +#include <linux/interrupt.h>
> > +#include <linux/pm_domain.h>
> > +#include <linux/string.h>
> > +
> > +#include <media/v4l2-mem2mem.h>
> > +#include <media/v4l2-ioctl.h>
> > +#include <media/v4l2-common.h>
> > +#include <media/v4l2-event.h>
> > +#include <media/videobuf2-dma-contig.h>
> > +
> > +#include "mxc-jpeg-hw.h"
> > +#include "mxc-jpeg.h"
> > +
> > +static struct mxc_jpeg_fmt mxc_formats[] = {
> > + {
> > + .name = "JPEG",
> > + .fourcc = V4L2_PIX_FMT_JPEG,
> > + .colplanes = 1,
> > + .flags = MXC_JPEG_FMT_TYPE_ENC,
> > + },
> > + {
> > + .name = "RGB", /*RGBRGB packed format*/
> > + .fourcc = V4L2_PIX_FMT_RGB24,
> > + .depth = 24,
> > + .colplanes = 1,
> > + .h_align = 3,
> > + .v_align = 3,
> > + .flags = MXC_JPEG_FMT_TYPE_RAW,
> > + },
> > + {
> > + .name = "ARGB", /* ARGBARGB packed format
> > */
> > + .fourcc = V4L2_PIX_FMT_ARGB32,
> > + .depth = 32,
> > + .colplanes = 1,
> > + .h_align = 3,
> > + .v_align = 3,
> > + .flags = MXC_JPEG_FMT_TYPE_RAW,
> > + },
> > + {
> > + .name = "YUV420", /* 1st plane = Y, 2nd
> > plane = UV */
> > + .fourcc = V4L2_PIX_FMT_NV12,
> > + .depth = 12, /* 6 bytes (4Y + UV) for 4
> > pixels */
> > + .colplanes = 2, /* 1 plane Y, 1 plane UV
> > interleaved */
> > + .h_align = 4,
> > + .v_align = 4,
> > + .flags = MXC_JPEG_FMT_TYPE_RAW,
> > + },
> > + {
> > + .name = "YUV422", /* YUYV */
> > + .fourcc = V4L2_PIX_FMT_YUYV,
> > + .depth = 16,
> > + .colplanes = 1,
> > + .h_align = 4,
> > + .v_align = 3,
> > + .flags = MXC_JPEG_FMT_TYPE_RAW,
> > + },
> > + {
> > + .name = "YUV444", /* YUVYUV */
> > + .fourcc = V4L2_PIX_FMT_YUV24,
> > + .depth = 24,
> > + .colplanes = 1,
> > + .h_align = 3,
> > + .v_align = 3,
> > + .flags = MXC_JPEG_FMT_TYPE_RAW,
> > + },
> > + {
> > + .name = "Gray", /* Gray (Y8/Y12) or Single
> > Comp */
> > + .fourcc = V4L2_PIX_FMT_GREY,
> > + .depth = 8,
> > + .colplanes = 1,
> > + .h_align = 3,
> > + .v_align = 3,
> > + .flags = MXC_JPEG_FMT_TYPE_RAW,
> > + },
> > +};
> > +
> > +#define MXC_JPEG_NUM_FORMATS ARRAY_SIZE(mxc_formats)
> > +
> > +static const struct of_device_id mxc_jpeg_match[] = {
> > + {
> > + .compatible = "nxp,imx8qxp-jpgdec",
> > + .data = (void *)MXC_JPEG_DECODE,
> > + },
> > + {
> > + .compatible = "nxp,imx8qxp-jpgenc",
> > + .data = (void *)MXC_JPEG_ENCODE,
> > + },
> > + { },
> > +};
> > +
> > +/*
> > + * default configuration stream, 64x64 yuv422
> > + * split by JPEG marker, so it's easier to modify & use
> > + */
> > +static const unsigned char jpeg_soi[] = {
> > + 0xFF, 0xD8
> > +};
> > +
> > +static const unsigned char jpeg_app0[] = {
> > + 0xFF, 0xE0,
> > + 0x00, 0x10, 0x4A, 0x46, 0x49, 0x46, 0x00,
> > + 0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x01,
> > + 0x00, 0x00
> > +};
> > +
> > +static const unsigned char jpeg_app14[] = {
> > + 0xFF, 0xEE,
> > + 0x00, 0x0E, 0x41, 0x64, 0x6F, 0x62, 0x65,
> > + 0x00, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00
> > +};
> > +
> > +static const unsigned char jpeg_dqt[] = {
> > + 0xFF, 0xDB,
> > + 0x00, 0x84, 0x00, 0x10, 0x0B, 0x0C, 0x0E,
> > + 0x0C, 0x0A, 0x10, 0x0E, 0x0D, 0x0E, 0x12,
> > + 0x11, 0x10, 0x13, 0x18, 0x28, 0x1A, 0x18,
> > + 0x16, 0x16, 0x18, 0x31, 0x23, 0x25, 0x1D,
> > + 0x28, 0x3A, 0x33, 0x3D, 0x3C, 0x39, 0x33,
> > + 0x38, 0x37, 0x40, 0x48, 0x5C, 0x4E, 0x40,
> > + 0x44, 0x57, 0x45, 0x37, 0x38, 0x50, 0x6D,
> > + 0x51, 0x57, 0x5F, 0x62, 0x67, 0x68, 0x67,
> > + 0x3E, 0x4D, 0x71, 0x79, 0x70, 0x64, 0x78,
> > + 0x5C, 0x65, 0x67, 0x63, 0x01, 0x11, 0x12,
> > + 0x12, 0x18, 0x15, 0x18, 0x2F, 0x1A, 0x1A,
> > + 0x2F, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
> > + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> > + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> > + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> > + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> > + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> > + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> > + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
> > +};
> > +
> > +static const unsigned char jpeg_sof_maximal[] = {
> > + 0xFF, 0xC0,
> > + 0x00, 0x14, 0x08, 0x00, 0x40, 0x00, 0x40,
> > + 0x04, 0x01, 0x11, 0x00, 0x02, 0x11, 0x01,
> > + 0x03, 0x11, 0x01, 0x04, 0x11, 0x01
> > +};
> > +
> > +static const unsigned char jpeg_dht[] = {
> > + 0xFF, 0xC4,
> > + 0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01,
> > + 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
> > + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
> > + 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
> > + 0x09, 0x0A, 0x0B, 0x10, 0x00, 0x02, 0x01,
> > + 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05,
> > + 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01,
> > + 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
> > + 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61,
> > + 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91,
> > + 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15,
> > + 0x52, 0xD1, 0xF0, 0x24, 0x33, 0x62, 0x72,
> > + 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19,
> > + 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A,
> > + 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A,
> > + 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
> > + 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
> > + 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67,
> > + 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76,
> > + 0x77, 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85,
> > + 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93,
> > + 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
> > + 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
> > + 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
> > + 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4,
> > + 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
> > + 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
> > + 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6,
> > + 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3,
> > + 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
> > + 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01,
> > + 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
> > + 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03,
> > + 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
> > + 0x0B, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04,
> > + 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04,
> > + 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02,
> > + 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06,
> > + 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13,
> > + 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
> > + 0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52,
> > + 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16,
> > + 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18,
> > + 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A,
> > + 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43,
> > + 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A,
> > + 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
> > + 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
> > + 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77,
> > + 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85,
> > + 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93,
> > + 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
> > + 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
> > + 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
> > + 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4,
> > + 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
> > + 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
> > + 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
> > + 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5,
> > + 0xF6, 0xF7, 0xF8, 0xF9, 0xFA
> > +};
> > +
> > +static const unsigned char jpeg_dri[] = {
> > + 0xFF, 0xDD,
> > + 0x00, 0x04, 0x00, 0x20
> > +};
> > +
> > +static const unsigned char jpeg_sos_maximal[] = {
> > + 0xFF, 0xDA,
> > + 0x00, 0x0C, 0x04, 0x01, 0x00, 0x02, 0x11, 0x03,
> > + 0x11, 0x04, 0x11, 0x00, 0x3F, 0x00
> > +};
> > +
> > +static const unsigned char jpeg_eoi[] = {
> > + 0xFF, 0xD9
> > +};
> > +
> > +struct mxc_jpeg_src_buf {
> > + /* common v4l buffer stuff -- must be first */
> > + struct vb2_v4l2_buffer b;
> > + struct list_head list;
> > +
> > + /* mxc-jpeg specific */
> > + bool dht_needed;
> > + bool jpeg_parse_error;
> > +};
> > +
> > +static inline struct mxc_jpeg_src_buf *vb2_to_mxc_buf(struct
> > vb2_buffer *vb)
> > +{
> > + return container_of(to_vb2_v4l2_buffer(vb),
> > + struct mxc_jpeg_src_buf, b);
> > +}
> > +
> > +static unsigned int debug;
> > +module_param(debug, int, 0644);
> > +MODULE_PARM_DESC(debug, "Debug level (0-3)");
> > +
> > +static void _bswap16(u16 *a)
> > +{
> > + *a = ((*a & 0x00FF) << 8) | ((*a & 0xFF00) >> 8);
> > +}
> > +
> > +static void print_mxc_buf(struct mxc_jpeg_dev *jpeg, struct
> > vb2_buffer *buf,
> > + unsigned long len)
> > +{
> > + unsigned int plane_no;
> > + u32 dma_addr;
> > + void *vaddr;
> > + unsigned long payload;
> > +
> > + if (debug < 3)
> > + return;
> > +
> > + for (plane_no = 0; plane_no < buf->num_planes; plane_no++) {
> > + payload = vb2_get_plane_payload(buf, plane_no);
> > + if (len == 0)
> > + len = payload;
> > + dma_addr = vb2_dma_contig_plane_dma_addr(buf,
> > plane_no);
> > + vaddr = vb2_plane_vaddr(buf, plane_no);
> > + v4l2_dbg(3, debug, &jpeg->v4l2_dev,
> > + "plane %d (vaddr=%p dma_addr=%x
> > payload=%ld):",
> > + plane_no, vaddr, dma_addr, payload);
> > + print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET,
> > 32, 1,
> > + vaddr, len, false);
> > + }
> > +}
> > +
> > +static inline struct mxc_jpeg_ctx *mxc_jpeg_fh_to_ctx(struct
> > v4l2_fh *fh)
> > +{
> > + return container_of(fh, struct mxc_jpeg_ctx, fh);
> > +}
> > +
> > +static int enum_fmt(struct mxc_jpeg_fmt *mxc_formats, int n,
> > + struct v4l2_fmtdesc *f, u32 type)
> > +{
> > + int i, num = 0;
> > +
> > + for (i = 0; i < n; ++i) {
> > + if (mxc_formats[i].flags == type) {
> > + /* index-th format of searched type found ?
> > */
> > + if (num == f->index)
> > + break;
> > + /* Correct type but haven't reached our index
> > yet,
> > + * just increment per-type index
> > + */
> > + ++num;
> > + }
> > + }
> > +
> > + /* Format not found */
> > + if (i >= n)
> > + return -EINVAL;
> > +
> > + strscpy(f->description, mxc_formats[i].name, sizeof(f-
> > >description));
> > + f->pixelformat = mxc_formats[i].fourcc;
> > +
> > + return 0;
> > +}
> > +
> > +static struct mxc_jpeg_fmt *mxc_jpeg_find_format(struct
> > mxc_jpeg_ctx *ctx,
> > + u32 pixelformat)
> > +{
> > + unsigned int k;
> > +
> > + for (k = 0; k < MXC_JPEG_NUM_FORMATS; k++) {
> > + struct mxc_jpeg_fmt *fmt = &mxc_formats[k];
> > +
> > + if (fmt->fourcc == pixelformat)
> > + return fmt;
> > + }
> > + return NULL;
> > +}
> > +
> > +static enum mxc_jpeg_image_format mxc_jpeg_fourcc_to_imgfmt(u32
> > fourcc)
> > +{
> > + switch (fourcc) {
> > + case V4L2_PIX_FMT_GREY:
> > + return MXC_JPEG_GRAY;
> > + case V4L2_PIX_FMT_YUYV:
> > + return MXC_JPEG_YUV422;
> > + case V4L2_PIX_FMT_NV12:
> > + return MXC_JPEG_YUV420;
> > + case V4L2_PIX_FMT_YUV24:
> > + return MXC_JPEG_YUV444;
> > + case V4L2_PIX_FMT_RGB24:
> > + return MXC_JPEG_RGB;
> > + case V4L2_PIX_FMT_ARGB32:
> > + return MXC_JPEG_ARGB;
> > + default:
> > + return MXC_JPEG_INVALID;
> > + }
> > +}
> > +
> > +static int mxc_jpeg_imgfmt_to_fourcc(enum mxc_jpeg_image_format
> > imgfmt,
> > + u32 *fourcc)
> > +{
> > + switch (imgfmt) {
> > + case MXC_JPEG_GRAY:
> > + *fourcc = V4L2_PIX_FMT_GREY;
> > + return 0;
> > + case MXC_JPEG_YUV422:
> > + *fourcc = V4L2_PIX_FMT_YUYV;
> > + return 0;
> > + case MXC_JPEG_YUV420:
> > + *fourcc = V4L2_PIX_FMT_NV12;
> > + return 0;
> > + case MXC_JPEG_YUV444:
> > + *fourcc = V4L2_PIX_FMT_YUV24;
> > + return 0;
> > + case MXC_JPEG_RGB:
> > + *fourcc = V4L2_PIX_FMT_RGB24;
> > + return 0;
> > + case MXC_JPEG_ARGB:
> > + *fourcc = V4L2_PIX_FMT_ARGB32;
> > + return 0;
> > + default:
> > + return 1;
> > + }
> > +}
> > +
> > +static struct mxc_jpeg_q_data *mxc_jpeg_get_q_data(struct
> > mxc_jpeg_ctx *ctx,
> > + enum v4l2_buf_type
> > type)
> > +{
> > + if (V4L2_TYPE_IS_OUTPUT(type))
> > + return &ctx->out_q;
> > + return &ctx->cap_q;
> > +}
> > +
> > +static void mxc_jpeg_addrs(struct mxc_jpeg_desc *desc,
> > + struct vb2_buffer *raw_buf,
> > + struct vb2_buffer *jpeg_buf, int offset)
> > +{
> > + int img_fmt = desc->stm_ctrl & STM_CTRL_IMAGE_FORMAT_MASK;
> > +
> > + desc->buf_base0 = vb2_dma_contig_plane_dma_addr(raw_buf, 0);
> > + desc->buf_base1 = 0;
> > + if (img_fmt == STM_CTRL_IMAGE_FORMAT(MXC_JPEG_YUV420)) {
> > + WARN_ON(raw_buf->num_planes < 2);
> > + desc->buf_base1 =
> > vb2_dma_contig_plane_dma_addr(raw_buf, 1);
> > + }
> > + desc->stm_bufbase = vb2_dma_contig_plane_dma_addr(jpeg_buf,
> > 0) +
> > + offset;
> > +}
> > +
> > +static void notify_eos(struct mxc_jpeg_ctx *ctx)
> > +{
> > + const struct v4l2_event ev = {
> > + .type = V4L2_EVENT_EOS
> > + };
> > +
> > + dev_dbg(ctx->mxc_jpeg->dev, "Notify app event EOS reached");
> > + v4l2_event_queue_fh(&ctx->fh, &ev);
> > +}
> > +
> > +static void notify_src_chg(struct mxc_jpeg_ctx *ctx)
> > +{
> > + const struct v4l2_event ev = {
> > + .type = V4L2_EVENT_SOURCE_CHANGE,
> > + .u.src_change.changes =
> > + V4L2_EVENT_SRC_CH_RESOLUTION,
> > + };
> > +
> > + dev_dbg(ctx->mxc_jpeg->dev, "Notify app event
> > SRC_CH_RESOLUTION");
> > + v4l2_event_queue_fh(&ctx->fh, &ev);
> > +}
> > +
> > +static int mxc_get_free_slot(struct mxc_jpeg_slot_data
> > slot_data[], int n)
> > +{
> > + int free_slot = 0;
> > +
> > + while (slot_data[free_slot].used && free_slot < n)
> > + free_slot++;
> > +
> > + return free_slot; /* >=n when there are no more free slots */
> > +}
> > +
> > +static bool mxc_jpeg_alloc_slot_data(struct mxc_jpeg_dev *jpeg,
> > + unsigned int slot)
> > +{
> > + struct mxc_jpeg_desc *desc;
> > + struct mxc_jpeg_desc *cfg_desc;
> > + void *cfg_stm;
> > +
> > + if (jpeg->slot_data[slot].desc)
> > + goto skip_alloc; /* already allocated, reuse it */
> > +
> > + /* allocate descriptor for decoding/encoding phase */
> > + desc = dma_alloc_coherent(jpeg->dev,
> > + sizeof(struct mxc_jpeg_desc),
> > + &jpeg->slot_data[slot].desc_handle,
> > + GFP_ATOMIC);
> > + if (!desc)
> > + goto err;
> > + jpeg->slot_data[slot].desc = desc;
> > +
> > + /* allocate descriptor for configuration phase (encoder only)
> > */
> > + cfg_desc = dma_alloc_coherent(jpeg->dev,
> > + sizeof(struct mxc_jpeg_desc),
> > + &jpeg-
> > >slot_data[slot].cfg_desc_handle,
> > + GFP_ATOMIC);
> > + if (!cfg_desc)
> > + goto err;
> > + jpeg->slot_data[slot].cfg_desc = cfg_desc;
> > +
> > + /* allocate configuration stream */
> > + cfg_stm = dma_alloc_coherent(jpeg->dev,
> > + MXC_JPEG_MAX_CFG_STREAM,
> > + &jpeg-
> > >slot_data[slot].cfg_stream_handle,
> > + GFP_ATOMIC);
> > + if (!cfg_stm)
> > + goto err;
> > + jpeg->slot_data[slot].cfg_stream_vaddr = cfg_stm;
> > +
> > +skip_alloc:
> > + jpeg->slot_data[slot].used = true;
> > +
> > + return true;
> > +err:
> > + dev_err(jpeg->dev, "Could not allocate descriptors for slot
> > %d", slot);
> > +
> > + return false;
> > +}
> > +
> > +static void mxc_jpeg_free_slot_data(struct mxc_jpeg_dev *jpeg,
> > + unsigned int slot)
> > +{
> > + if (slot >= MXC_MAX_SLOTS) {
> > + dev_err(jpeg->dev, "Invalid slot %d, nothing to
> > free.", slot);
> > + return;
> > + }
> > +
> > + /* free descriptor for decoding/encoding phase */
> > + dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
> > + jpeg->slot_data[slot].desc,
> > + jpeg->slot_data[slot].desc_handle);
> > +
> > + /* free descriptor for encoder configuration phase / decoder
> > DHT */
> > + dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
> > + jpeg->slot_data[slot].cfg_desc,
> > + jpeg->slot_data[slot].cfg_desc_handle);
> > +
> > + /* free configuration stream */
> > + dma_free_coherent(jpeg->dev, MXC_JPEG_MAX_CFG_STREAM,
> > + jpeg->slot_data[slot].cfg_stream_vaddr,
> > + jpeg->slot_data[slot].cfg_stream_handle);
> > +
> > + jpeg->slot_data[slot].used = false;
> > +}
> > +
> > +static irqreturn_t mxc_jpeg_dec_irq(int irq, void *priv)
> > +{
> > + struct mxc_jpeg_dev *jpeg = priv;
> > + struct mxc_jpeg_ctx *ctx;
> > + void __iomem *reg = jpeg->base_reg;
> > + struct device *dev = jpeg->dev;
> > + struct vb2_v4l2_buffer *src_buf, *dst_buf;
> > + struct mxc_jpeg_src_buf *jpeg_src_buf;
> > + enum vb2_buffer_state buf_state;
> > + u32 dec_ret, com_status;
> > + unsigned long payload;
> > + struct mxc_jpeg_q_data *q_data;
> > + enum v4l2_buf_type cap_type =
> > V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> > + unsigned int slot;
> > +
> > + spin_lock(&jpeg->hw_lock);
> > +
> > + com_status = readl(reg + COM_STATUS);
> > + slot = COM_STATUS_CUR_SLOT(com_status);
> > + dev_dbg(dev, "Irq %d on slot %d.\n", irq, slot);
> > +
> > + ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev);
> > + if (!ctx) {
> > + dev_err(dev,
> > + "Instance released before the end of
> > transaction.\n");
> > + /* soft reset only resets internal state, not
> > registers */
> > + mxc_jpeg_sw_reset(reg);
> > + /* clear all interrupts */
> > + writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot,
> > SLOT_STATUS));
> > + goto job_unlock;
> > + }
> > +
> > + if (slot != ctx->slot) {
> > + /* TODO investigate when adding multi-instance
> > support */
> > + dev_warn(dev, "IRQ slot %d != context slot %d.\n",
> > + slot, ctx->slot);
> > + goto job_unlock;
> > + }
> > +
> > + dec_ret = readl(reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS));
> > + writel(dec_ret, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS)); /*
> > w1c */
> > +
> > + dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> > + src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> > + jpeg_src_buf = vb2_to_mxc_buf(&src_buf->vb2_buf);
> > +
> > + if (dec_ret & SLOT_STATUS_ENC_CONFIG_ERR) {
> > + u32 ret = readl(reg + CAST_STATUS12);
> > +
> > + dev_err(dev, "Encoder/decoder error, status=0x%08x",
> > ret);
> > + mxc_jpeg_sw_reset(reg);
> > + buf_state = VB2_BUF_STATE_ERROR;
> > + goto buffers_done;
> > + }
> > +
> > + if (!(dec_ret & SLOT_STATUS_FRMDONE))
> > + goto job_unlock;
> > +
> > + if (jpeg->mode == MXC_JPEG_ENCODE &&
> > + ctx->enc_state == MXC_JPEG_ENC_CONF) {
> > + ctx->enc_state = MXC_JPEG_ENCODING;
> > + dev_dbg(dev, "Encoder config finished. Start
> > encoding...\n");
> > + mxc_jpeg_enc_mode_go(dev, reg);
> > + goto job_unlock;
> > + }
> > + if (jpeg->mode == MXC_JPEG_DECODE && jpeg_src_buf-
> > >dht_needed) {
> > + jpeg_src_buf->dht_needed = false;
> > + dev_dbg(dev, "Decoder DHT cfg finished. Start
> > decoding...\n");
> > + goto job_unlock;
> > + }
> > + if (jpeg->mode == MXC_JPEG_ENCODE) {
> > + payload = readl(reg + MXC_SLOT_OFFSET(slot,
> > SLOT_BUF_PTR));
> > + vb2_set_plane_payload(&dst_buf->vb2_buf, 0, payload);
> > + dev_dbg(dev, "Encoding finished, payload size:
> > %ld\n",
> > + payload);
> > + } else {
> > + q_data = mxc_jpeg_get_q_data(ctx, cap_type);
> > + payload = q_data->sizeimage[0];
> > + vb2_set_plane_payload(&dst_buf->vb2_buf, 0, payload);
> > + vb2_set_plane_payload(&dst_buf->vb2_buf, 1, 0);
> > + if (q_data->fmt->colplanes == 2) {
> > + payload = q_data->sizeimage[1];
> > + vb2_set_plane_payload(&dst_buf->vb2_buf, 1,
> > payload);
> > + }
> > + dev_dbg(dev, "Decoding finished, payload size: %ld +
> > %ld\n",
> > + vb2_get_plane_payload(&dst_buf->vb2_buf, 0),
> > + vb2_get_plane_payload(&dst_buf->vb2_buf, 1));
> > + }
> > +
> > + /* short preview of the results */
> > + dev_dbg(dev, "src_buf preview: ");
> > + print_mxc_buf(jpeg, &src_buf->vb2_buf, 32);
> > + dev_dbg(dev, "dst_buf preview: ");
> > + print_mxc_buf(jpeg, &dst_buf->vb2_buf, 32);
> > + buf_state = VB2_BUF_STATE_DONE;
> > +
> > +buffers_done:
> > + jpeg->slot_data[slot].used = false; /* unused, but don't free
> > */
> > + v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
> > + v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
> > + v4l2_m2m_buf_done(src_buf, buf_state);
> > + v4l2_m2m_buf_done(dst_buf, buf_state);
> > + spin_unlock(&jpeg->hw_lock);
> > + v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
> > + return IRQ_HANDLED;
> > +job_unlock:
> > + spin_unlock(&jpeg->hw_lock);
> > + return IRQ_HANDLED;
> > +}
> > +
> > +static int mxc_jpeg_fixup_sof(struct mxc_jpeg_sof *sof,
> > + u32 fourcc,
> > + u16 w, u16 h)
> > +{
> > + int sof_length;
> > +
> > + sof->precision = 8; /* TODO allow 8/12 bit precision*/
> > + sof->height = h;
> > + _bswap16(&sof->height);
> > + sof->width = w;
> > + _bswap16(&sof->width);
> > +
> > + switch (fourcc) {
> > + case V4L2_PIX_FMT_NV12:
> > + sof->components_no = 3;
> > + sof->comp[0].v = 0x2;
> > + sof->comp[0].h = 0x2;
> > + break;
> > + case V4L2_PIX_FMT_YUYV:
> > + sof->components_no = 3;
> > + sof->comp[0].v = 0x1;
> > + sof->comp[0].h = 0x2;
> > + break;
> > + case V4L2_PIX_FMT_YUV24:
> > + case V4L2_PIX_FMT_RGB24:
> > + default:
> > + sof->components_no = 3;
> > + break;
> > + case V4L2_PIX_FMT_ARGB32:
> > + sof->components_no = 4;
> > + break;
> > + case V4L2_PIX_FMT_GREY:
> > + sof->components_no = 1;
> > + break;
> > + }
> > + sof_length = 8 + 3 * sof->components_no;
> > + sof->length = sof_length;
> > + _bswap16(&sof->length);
> > +
> > + return sof_length; /* not swaped */
> > +}
> > +
> > +static int mxc_jpeg_fixup_sos(struct mxc_jpeg_sos *sos,
> > + u32 fourcc)
> > +{
> > + int sos_length;
> > + u8 *sof_u8 = (u8 *)sos;
> > +
> > + switch (fourcc) {
> > + case V4L2_PIX_FMT_NV12:
> > + sos->components_no = 3;
> > + break;
> > + case V4L2_PIX_FMT_YUYV:
> > + sos->components_no = 3;
> > + break;
> > + case V4L2_PIX_FMT_YUV24:
> > + case V4L2_PIX_FMT_RGB24:
> > + default:
> > + sos->components_no = 3;
> > + break;
> > + case V4L2_PIX_FMT_ARGB32:
> > + sos->components_no = 4;
> > + break;
> > + case V4L2_PIX_FMT_GREY:
> > + sos->components_no = 1;
> > + break;
> > + }
> > + sos_length = 6 + 2 * sos->components_no;
> > + sos->length = sos_length;
> > + _bswap16(&sos->length);
> > +
> > + /* SOS ignorable bytes, not so ignorable after all */
> > + sof_u8[sos_length - 1] = 0x0;
> > + sof_u8[sos_length - 2] = 0x3f;
> > + sof_u8[sos_length - 3] = 0x0;
> > +
> > + return sos_length; /* not swaped */
> > +}
> > +
> > +static unsigned int mxc_jpeg_setup_cfg_stream(void
> > *cfg_stream_vaddr,
> > + u32 fourcc,
> > + u16 w, u16 h)
> > +{
> > + unsigned int offset = 0;
> > + u8 *cfg = (u8 *)cfg_stream_vaddr;
> > + struct mxc_jpeg_sof *sof;
> > + struct mxc_jpeg_sos *sos;
> > +
> > + memcpy(cfg + offset, jpeg_soi, ARRAY_SIZE(jpeg_soi));
> > + offset += ARRAY_SIZE(jpeg_soi);
> > +
> > + if (fourcc == V4L2_PIX_FMT_RGB24 ||
> > + fourcc == V4L2_PIX_FMT_ARGB32) {
> > + memcpy(cfg + offset, jpeg_app14, sizeof(jpeg_app14));
> > + offset += sizeof(jpeg_app14);
> > + } else {
> > + memcpy(cfg + offset, jpeg_app0, sizeof(jpeg_app0));
> > + offset += sizeof(jpeg_app0);
> > + }
> > +
> > + memcpy(cfg + offset, jpeg_dqt, sizeof(jpeg_dqt));
> > + offset += sizeof(jpeg_dqt);
> > +
> > + memcpy(cfg + offset, jpeg_sof_maximal,
> > sizeof(jpeg_sof_maximal));
> > + offset += 2; /* skip marker ID */
> > + sof = (struct mxc_jpeg_sof *)(cfg + offset);
> > + offset += mxc_jpeg_fixup_sof(sof, fourcc, w, h);
> > +
> > + memcpy(cfg + offset, jpeg_dht, sizeof(jpeg_dht));
> > + offset += sizeof(jpeg_dht);
> > +
> > + memcpy(cfg + offset, jpeg_dri, sizeof(jpeg_dri));
> > + offset += sizeof(jpeg_dri);
> > +
> > + memcpy(cfg + offset, jpeg_sos_maximal,
> > sizeof(jpeg_sos_maximal));
> > + offset += 2; /* skip marker ID */
> > + sos = (struct mxc_jpeg_sos *)(cfg + offset);
> > + offset += mxc_jpeg_fixup_sos(sos, fourcc);
> > +
> > + memcpy(cfg + offset, jpeg_eoi, sizeof(jpeg_eoi));
> > + offset += sizeof(jpeg_eoi);
> > +
> > + return offset;
> > +}
> > +
> > +static void mxc_jpeg_config_dec_desc(struct vb2_buffer *out_buf,
> > + struct mxc_jpeg_ctx *ctx,
> > + struct vb2_buffer *src_buf,
> > + struct vb2_buffer *dst_buf)
> > +{
> > + enum v4l2_buf_type cap_type =
> > V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> > + struct mxc_jpeg_q_data *q_data_cap;
> > + enum mxc_jpeg_image_format img_fmt;
> > + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> > + void __iomem *reg = jpeg->base_reg;
> > + unsigned int slot = ctx->slot;
> > + struct mxc_jpeg_desc *desc = jpeg->slot_data[slot].desc;
> > + struct mxc_jpeg_desc *cfg_desc = jpeg-
> > >slot_data[slot].cfg_desc;
> > + dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
> > + dma_addr_t cfg_desc_handle = jpeg-
> > >slot_data[slot].cfg_desc_handle;
> > + dma_addr_t cfg_stream_handle = jpeg-
> > >slot_data[slot].cfg_stream_handle;
> > + unsigned int *cfg_size = &jpeg-
> > >slot_data[slot].cfg_stream_size;
> > + void *cfg_stream_vaddr = jpeg-
> > >slot_data[slot].cfg_stream_vaddr;
> > + struct mxc_jpeg_src_buf *jpeg_src_buf;
> > +
> > + jpeg_src_buf = vb2_to_mxc_buf(src_buf);
> > +
> > + /* setup the decoding descriptor */
> > + desc->next_descpt_ptr = 0; /* end of chain */
> > + q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
> > + desc->imgsize = q_data_cap->w_adjusted << 16 | q_data_cap-
> > >h_adjusted;
> > + img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data_cap->fmt->fourcc);
> > + desc->stm_ctrl &= ~STM_CTRL_IMAGE_FORMAT(0xF); /* clear image
> > format */
> > + desc->stm_ctrl |= STM_CTRL_IMAGE_FORMAT(img_fmt);
> > + desc->line_pitch = q_data_cap->bytesperline[0];
> > + mxc_jpeg_addrs(desc, dst_buf, src_buf, 0);
> > + mxc_jpeg_set_bufsize(desc, ALIGN(vb2_plane_size(src_buf, 0),
> > 1024));
> > + print_descriptor_info(jpeg->dev, desc);
> > +
> > + if (!jpeg_src_buf->dht_needed) {
> > + /* validate the decoding descriptor */
> > + mxc_jpeg_set_desc(desc_handle, reg, slot);
> > + return;
> > + }
> > +
> > + /*
> > + * if a default huffman table is needed, use the config
> > descriptor to
> > + * inject a DHT, by chaining it before the decoding
> > descriptor
> > + */
> > + *cfg_size = mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
> > + V4L2_PIX_FMT_YUYV,
> > + MXC_JPEG_MIN_WIDTH,
> > + MXC_JPEG_MIN_HEIGHT);
> > + cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
> > + cfg_desc->buf_base0 = vb2_dma_contig_plane_dma_addr(dst_buf,
> > 0);
> > + cfg_desc->buf_base1 = 0;
> > + cfg_desc->imgsize = MXC_JPEG_MIN_WIDTH << 16;
> > + cfg_desc->imgsize |= MXC_JPEG_MIN_HEIGHT;
> > + cfg_desc->line_pitch = MXC_JPEG_MIN_WIDTH * 2;
> > + cfg_desc->stm_ctrl = STM_CTRL_IMAGE_FORMAT(MXC_JPEG_YUV422);
> > + cfg_desc->stm_bufbase = cfg_stream_handle;
> > + cfg_desc->stm_bufsize = ALIGN(*cfg_size, 1024);
> > + print_descriptor_info(jpeg->dev, cfg_desc);
> > +
> > + /* validate the configuration descriptor */
> > + mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
> > +}
> > +
> > +static void mxc_jpeg_config_enc_desc(struct vb2_buffer *out_buf,
> > + struct mxc_jpeg_ctx *ctx,
> > + struct vb2_buffer *src_buf,
> > + struct vb2_buffer *dst_buf)
> > +{
> > + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> > + void __iomem *reg = jpeg->base_reg;
> > + unsigned int slot = ctx->slot;
> > + struct mxc_jpeg_desc *desc = jpeg->slot_data[slot].desc;
> > + struct mxc_jpeg_desc *cfg_desc = jpeg-
> > >slot_data[slot].cfg_desc;
> > + dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
> > + dma_addr_t cfg_desc_handle = jpeg-
> > >slot_data[slot].cfg_desc_handle;
> > + void *cfg_stream_vaddr = jpeg-
> > >slot_data[slot].cfg_stream_vaddr;
> > + struct mxc_jpeg_q_data *q_data;
> > + enum mxc_jpeg_image_format img_fmt;
> > + int w, h;
> > +
> > + q_data = mxc_jpeg_get_q_data(ctx, src_buf->vb2_queue->type);
> > +
> > + jpeg->slot_data[slot].cfg_stream_size =
> > + mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
> > + q_data->fmt-
> > >fourcc,
> > + q_data->w_adjusted,
> > + q_data-
> > >h_adjusted);
> > +
> > + /* chain the config descriptor with the encoding descriptor
> > */
> > + cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
> > +
> > + cfg_desc->buf_base0 = jpeg-
> > >slot_data[slot].cfg_stream_handle;
> > + cfg_desc->buf_base1 = 0;
> > + cfg_desc->line_pitch = 0;
> > + cfg_desc->stm_bufbase = 0; /* no output expected */
> > + cfg_desc->stm_bufsize = 0x0;
> > + cfg_desc->imgsize = 0;
> > + cfg_desc->stm_ctrl = STM_CTRL_CONFIG_MOD(1);
> > +
> > + desc->next_descpt_ptr = 0; /* end of chain */
> > +
> > + /* use adjusted resolution for CAST IP job */
> > + w = q_data->w_adjusted;
> > + h = q_data->h_adjusted;
> > + mxc_jpeg_set_res(desc, w, h);
> > + mxc_jpeg_set_line_pitch(desc, w * (q_data->fmt->depth / 8));
> > + mxc_jpeg_set_bufsize(desc, desc->line_pitch * h);
> > + img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data->fmt->fourcc);
> > + if (img_fmt == MXC_JPEG_INVALID)
> > + dev_err(jpeg->dev, "No valid image format
> > detected\n");
> > + desc->stm_ctrl = STM_CTRL_CONFIG_MOD(0) |
> > + STM_CTRL_IMAGE_FORMAT(img_fmt);
> > + mxc_jpeg_addrs(desc, src_buf, dst_buf, 0);
> > + dev_dbg(jpeg->dev, "cfg_desc - 0x%llx:\n", cfg_desc_handle);
> > + print_descriptor_info(jpeg->dev, cfg_desc);
> > + dev_dbg(jpeg->dev, "enc desc - 0x%llx:\n", desc_handle);
> > + print_descriptor_info(jpeg->dev, desc);
> > + print_wrapper_info(jpeg->dev, reg);
> > + print_cast_status(jpeg->dev, reg, MXC_JPEG_ENCODE);
> > +
> > + /* validate the configuration descriptor */
> > + mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
> > +}
> > +
> > +static void mxc_jpeg_device_run(void *priv)
> > +{
> > + struct mxc_jpeg_ctx *ctx = priv;
> > + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> > + void __iomem *reg = jpeg->base_reg;
> > + struct device *dev = jpeg->dev;
> > + struct vb2_v4l2_buffer *src_buf, *dst_buf;
> > + unsigned long flags;
> > + struct mxc_jpeg_q_data *q_data_cap, *q_data_out;
> > + struct mxc_jpeg_src_buf *jpeg_src_buf;
> > +
> > + spin_lock_irqsave(&ctx->mxc_jpeg->hw_lock, flags);
> > + src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> > + dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> > + if (!src_buf || !dst_buf) {
> > + dev_err(dev, "Null src or dst buf\n");
> > + goto end;
> > + }
> > +
> > + q_data_cap = mxc_jpeg_get_q_data(ctx,
> > V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > + if (!q_data_cap)
> > + goto end;
> > + q_data_out = mxc_jpeg_get_q_data(ctx,
> > V4L2_BUF_TYPE_VIDEO_OUTPUT);
> > + if (!q_data_out)
> > + goto end;
> > + src_buf->sequence = q_data_out->sequence++;
> > + dst_buf->sequence = q_data_cap->sequence++;
> > +
> > + v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
> > +
> > + jpeg_src_buf = vb2_to_mxc_buf(&src_buf->vb2_buf);
> > + if (jpeg_src_buf->jpeg_parse_error) {
> > + jpeg->slot_data[ctx->slot].used = false;
> > + v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
> > + v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
> > + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
> > + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
> > + spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock,
> > flags);
> > + v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
> > +
> > + return;
> > + }
> > +
> > + /*
> > + * TODO: this reset should be removed, once we figure out
> > + * how to overcome hardware issues both on encoder and
> > decoder
> > + */
> > + mxc_jpeg_sw_reset(reg);
> > + mxc_jpeg_enable(reg);
> > + mxc_jpeg_set_l_endian(reg, 1);
> > +
> > + ctx->slot = mxc_get_free_slot(jpeg->slot_data,
> > MXC_MAX_SLOTS);
> > + if (ctx->slot >= MXC_MAX_SLOTS) {
> > + dev_err(dev, "No more free slots\n");
> > + goto end;
> > + }
> > + if (!mxc_jpeg_alloc_slot_data(jpeg, ctx->slot)) {
> > + dev_err(dev, "Canot allocate slot data\n");
> > + goto end;
> > + }
> > +
> > + mxc_jpeg_enable_slot(reg, ctx->slot);
> > + mxc_jpeg_enable_irq(reg, ctx->slot);
> > +
> > + if (jpeg->mode == MXC_JPEG_ENCODE) {
> > + dev_dbg(dev, "Encoding on slot %d\n", ctx->slot);
> > + ctx->enc_state = MXC_JPEG_ENC_CONF;
> > + mxc_jpeg_config_enc_desc(&dst_buf->vb2_buf, ctx,
> > + &src_buf->vb2_buf, &dst_buf-
> > >vb2_buf);
> > + mxc_jpeg_enc_mode_conf(dev, reg); /* start config
> > phase */
> > + } else {
> > + dev_dbg(dev, "Decoding on slot %d\n", ctx->slot);
> > + print_mxc_buf(jpeg, &src_buf->vb2_buf, 0);
> > + mxc_jpeg_config_dec_desc(&dst_buf->vb2_buf, ctx,
> > + &src_buf->vb2_buf, &dst_buf-
> > >vb2_buf);
> > + mxc_jpeg_dec_mode_go(dev, reg);
> > + }
> > +end:
> > + spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
> > +}
> > +
> > +static int mxc_jpeg_try_decoder_cmd(struct file *file, void *fh,
> > + struct v4l2_decoder_cmd *c)
> > +{
> > + if (c->cmd != V4L2_DEC_CMD_STOP && c->cmd !=
> > V4L2_DEC_CMD_START)
> > + return -EINVAL;
> > +
> > + c->flags = 0;
> > +
> > + if (c->cmd == V4L2_DEC_CMD_START) {
> > + c->start.speed = 0;
> > + c->start.format = 0;
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_decoder_cmd(struct file *file, void *priv,
> > + struct v4l2_decoder_cmd *cmd)
> > +{
> > + struct v4l2_fh *fh = file->private_data;
> > + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
> > + struct device *dev = ctx->mxc_jpeg->dev;
> > + int ret;
> > +
> > + ret = mxc_jpeg_try_decoder_cmd(file, fh, cmd);
> > + if (ret < 0)
> > + return ret;
> > +
> > + /* Ignore decoder command silently in encoder context */
> > + if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE)
> > + return 0;
>
> This is wrong, this shouldn't be silent.
>
> I recommend that you use v4l2_disable_ioctl() to disable the
> VIDIOC_(TRY)_ENCODER_CMD
> ioctls for the decoder and the VIDIOC_(TRY)_DECODER_CMD ioctls for
> the encoder.
>
> That way you can drop this test as well.
>
> And it also fixes a bug where TRY_DECODER_CMD is allowed for an
> encoder, but not
> the DECODER_CMD ioctl. I've improved v4l2-compliance as well since it
> should have
> failed on this.
>
> > +
> > + if (cmd->cmd == V4L2_DEC_CMD_STOP) {
> > + dev_dbg(dev, "Received V4L2_DEC_CMD_STOP");
> > + if (v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx) == 0) {
> > + /* No more src bufs, notify app EOS */
> > + notify_eos(ctx);
> > + } else {
> > + /* will send EOS later*/
> > + ctx->stopping = 1;
> > + }
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_try_encoder_cmd(struct file *file, void *fh,
> > + struct v4l2_encoder_cmd *c)
> > +{
> > + if (c->cmd != V4L2_ENC_CMD_STOP && c->cmd !=
> > V4L2_ENC_CMD_START)
> > + return -EINVAL;
> > +
> > + c->flags = 0;
> > +
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_encoder_cmd(struct file *file, void *priv,
> > + struct v4l2_encoder_cmd *cmd)
> > +{
> > + struct v4l2_fh *fh = file->private_data;
> > + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
> > + struct device *dev = ctx->mxc_jpeg->dev;
> > + int ret;
> > +
> > + ret = mxc_jpeg_try_encoder_cmd(file, fh, cmd);
> > + if (ret < 0)
> > + return ret;
> > +
> > + /* Ignore encoder command silently in decoder context */
> > + if (ctx->mxc_jpeg->mode != MXC_JPEG_ENCODE)
> > + return 0;
>
> Same comment as above: drop this test and use v4l2_disable_ioctl()
> instead.
>
> > +
> > + if (cmd->cmd == V4L2_ENC_CMD_STOP) {
> > + dev_dbg(dev, "Received V4L2_ENC_CMD_STOP");
> > + if (v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx) == 0) {
> > + /* No more src bufs, notify app EOS */
> > + notify_eos(ctx);
> > + } else {
> > + /* will send EOS later*/
> > + ctx->stopping = 1;
> > + }
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_queue_setup(struct vb2_queue *q,
> > + unsigned int *nbuffers,
> > + unsigned int *nplanes,
> > + unsigned int sizes[],
> > + struct device *alloc_ctxs[])
> > +{
> > + struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
> > + struct mxc_jpeg_q_data *q_data = NULL;
> > + int i;
> > +
> > + q_data = mxc_jpeg_get_q_data(ctx, q->type);
> > + if (!q_data)
> > + return -EINVAL;
> > +
> > + /* Handle CREATE_BUFS situation - *nplanes != 0 */
> > + if (*nplanes) {
> > + for (i = 0; i < *nplanes; i++) {
> > + if (sizes[i] < q_data->sizeimage[i])
> > + return -EINVAL;
> > + }
>
> You need to 'return 0;' here.
>
> Otherwise you will overwrite the sizes array below, that's not
> what you want.
>
> > + }
> > +
> > + /* Handle REQBUFS situation */
> > + *nplanes = q_data->fmt->colplanes;
> > + for (i = 0; i < *nplanes; i++)
> > + sizes[i] = q_data->sizeimage[i];
> > +
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_start_streaming(struct vb2_queue *q, unsigned
> > int count)
> > +{
> > + struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
> > + struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, q-
> > >type);
> > +
> > + dev_dbg(ctx->mxc_jpeg->dev, "Start streaming ctx=%p", ctx);
> > + q_data->sequence = 0;
> > +
> > + return 0;
> > +}
> > +
> > +static void release_active_buffers(struct vb2_queue *q,
> > + enum vb2_buffer_state s)
> > +{
> > + struct vb2_buffer *vb;
> > +
> > + if (!list_empty(&q->queued_list))
> > + list_for_each_entry(vb, &q->queued_list,
> > queued_entry) {
> > + if (vb->state == VB2_BUF_STATE_ACTIVE)
> > + vb2_buffer_done(vb, s);
> > + }
>
> This isn't right since you are touching internal vb2_queue data
> structures.
>
> See vim2m_stop_streaming() from vim2m.c on how to do this. Minus the
> call to v4l2_ctrl_request_complete() since this driver doesn't use
> requests.
>
> > +}
> > +
> > +static void mxc_jpeg_stop_streaming(struct vb2_queue *q)
> > +{
> > + struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
> > +
> > + dev_dbg(ctx->mxc_jpeg->dev, "Stop streaming ctx=%p", ctx);
> > +
> > + /* Release all active buffers */
> > + release_active_buffers(q, VB2_BUF_STATE_ERROR);
>
> Just fold release_active_buffers() in here since it is a bit
> pointless to
> have that as a separate function.
>
> > +}
> > +
> > +struct mxc_jpeg_stream {
> > + u8 *addr;
> > + u32 loc;
> > + u32 end;
> > +};
> > +
> > +static int get_byte(struct mxc_jpeg_stream *stream)
> > +{
> > + int ret;
> > +
> > + if (stream->loc >= stream->end)
> > + return -1;
> > + ret = stream->addr[stream->loc];
> > + stream->loc++;
> > + return ret;
> > +}
> > +
> > +static int get_sof(struct device *dev,
> > + struct mxc_jpeg_stream *stream,
> > + struct mxc_jpeg_sof *sof)
> > +{
> > + int i;
> > +
> > + if (stream->loc + sizeof(struct mxc_jpeg_sof) >= stream->end)
> > + return -1;
> > + memcpy(sof, &stream->addr[stream->loc], sizeof(struct
> > mxc_jpeg_sof));
> > + _bswap16(&sof->length);
> > + _bswap16(&sof->height);
> > + _bswap16(&sof->width);
> > + dev_dbg(dev, "JPEG SOF: precision=%d\n", sof->precision);
> > + dev_dbg(dev, "JPEG SOF: height=%d, width=%d\n",
> > + sof->height, sof->width);
> > + for (i = 0; i < sof->components_no; i++) {
> > + dev_dbg(dev, "JPEG SOF: comp_id=%d, H=0x%x,
> > V=0x%x\n",
> > + sof->comp[i].id, sof->comp[i].v, sof-
> > >comp[i].h);
> > + }
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_valid_comp_id(struct device *dev,
> > + struct mxc_jpeg_sof *sof,
> > + struct mxc_jpeg_sos *sos)
> > +{
> > + int valid = 1;
> > + int i;
> > +
> > + /*
> > + * there's a limitation in the IP that the component IDs must
> > be
> > + * between 0..4, if they are not, let's patch them
> > + */
> > + for (i = 0; i < sof->components_no; i++)
> > + if (sof->comp[i].id > MXC_JPEG_MAX_COMPONENTS) {
> > + valid = 0;
> > + dev_err(dev, "Component %d has invalid ID:
> > %d",
> > + i, sof->comp[i].id);
> > + }
> > + if (!valid)
> > + /* patch all comp IDs if at least one is invalid */
> > + for (i = 0; i < sof->components_no; i++) {
> > + dev_warn(dev, "Component %d ID patched to:
> > %d",
> > + i, i + 1);
> > + sof->comp[i].id = i + 1;
> > + sos->comp[i].id = i + 1;
> > + }
> > +
> > + return valid;
> > +}
> > +
> > +static enum mxc_jpeg_image_format
> > +mxc_jpeg_get_image_format(struct device *dev, const struct
> > mxc_jpeg_sof *sof)
> > +{
> > + if (sof->components_no == 1) {
> > + dev_dbg(dev, "IMAGE_FORMAT is: MXC_JPEG_GRAY\n");
> > + return MXC_JPEG_GRAY;
> > + }
> > + if (sof->components_no == 3) {
> > + if (sof->comp[0].h == 2 && sof->comp[0].v == 2 &&
> > + sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> > + sof->comp[2].h == 1 && sof->comp[2].v == 1){
> > + dev_dbg(dev, "IMAGE_FORMAT is:
> > MXC_JPEG_YUV420\n");
> > + return MXC_JPEG_YUV420;
> > + }
> > + if (sof->comp[0].h == 2 && sof->comp[0].v == 1 &&
> > + sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> > + sof->comp[2].h == 1 && sof->comp[2].v == 1){
> > + dev_dbg(dev, "IMAGE_FORMAT is:
> > MXC_JPEG_YUV422\n");
> > + return MXC_JPEG_YUV422;
> > + }
> > + if (sof->comp[0].h == 1 && sof->comp[0].v == 1 &&
> > + sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> > + sof->comp[2].h == 1 && sof->comp[2].v == 1){
> > + dev_dbg(dev, "IMAGE_FORMAT is:
> > MXC_JPEG_YUV444\n");
> > + return MXC_JPEG_YUV444;
> > + }
> > + }
> > + if (sof->components_no == 4) {
> > + if (sof->comp[0].h == 1 && sof->comp[0].v == 1 &&
> > + sof->comp[1].h == 1 && sof->comp[1].v == 1 &&
> > + sof->comp[2].h == 1 && sof->comp[2].v == 1 &&
> > + sof->comp[3].h == 1 && sof->comp[3].v == 1){
> > + /* this is not tested */
> > + dev_dbg(dev, "IMAGE_FORMAT is:
> > MXC_JPEG_ARGB\n");
> > + return MXC_JPEG_ARGB;
> > + }
> > + }
> > + dev_err(dev, "Could not identify image format\n");
> > + return MXC_JPEG_INVALID;
> > +}
> > +
> > +static void mxc_jpeg_bytesperline(struct mxc_jpeg_q_data *q,
> > + u32 precision)
> > +{
> > + /* Bytes distance between the leftmost pixels in two adjacent
> > lines */
> > + if (q->fmt->fourcc == V4L2_PIX_FMT_JPEG) {
> > + /* bytesperline unused for compressed formats */
> > + q->bytesperline[0] = 0;
> > + q->bytesperline[1] = 0;
> > + } else if (q->fmt->fourcc == V4L2_PIX_FMT_NV12) {
> > + /* When the image format is planar the bytesperline
> > value
> > + * applies to the first plane and is divided by the
> > same factor
> > + * as the width field for the other planes
> > + */
> > + q->bytesperline[0] = q->w * (precision / 8) *
> > + (q->fmt->depth / 8);
> > + q->bytesperline[1] = q->bytesperline[0];
> > + } else {
> > + /* single plane formats */
> > + q->bytesperline[0] = q->w * (precision / 8) *
> > + (q->fmt->depth / 8);
> > + q->bytesperline[1] = 0;
> > + }
> > +}
> > +
> > +static void mxc_jpeg_sizeimage(struct mxc_jpeg_q_data *q)
> > +{
> > + if (q->fmt->fourcc == V4L2_PIX_FMT_JPEG) {
> > + /* if no sizeimage from user, assume worst jpeg
> > compression */
> > + if (!q->sizeimage[0])
> > + q->sizeimage[0] = 6 * q->w * q->h;
> > + q->sizeimage[1] = 0;
> > +
> > + if (q->sizeimage[0] > MXC_JPEG_MAX_SIZEIMAGE)
> > + q->sizeimage[0] = MXC_JPEG_MAX_SIZEIMAGE;
> > +
> > + /* jpeg stream size must be multiple of 1K */
> > + q->sizeimage[0] = ALIGN(q->sizeimage[0], 1024);
> > + } else {
> > + q->sizeimage[0] = q->bytesperline[0] * q->h;
> > + q->sizeimage[1] = 0;
> > + if (q->fmt->fourcc == V4L2_PIX_FMT_NV12)
> > + q->sizeimage[1] = q->sizeimage[0] / 2;
> > + }
> > +}
> > +
> > +static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
> > + u8 *src_addr, u32 size, bool *dht_needed)
> > +{
> > + struct device *dev = ctx->mxc_jpeg->dev;
> > + struct mxc_jpeg_q_data *q_data_out, *q_data_cap;
> > + enum v4l2_buf_type cap_type =
> > V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> > + struct mxc_jpeg_stream stream;
> > + bool notfound = true;
> > + bool app14 = false;
> > + bool src_chg = false;
> > + u8 app14_transform = 0;
> > + struct mxc_jpeg_sof sof, *psof = NULL;
> > + struct mxc_jpeg_sos *psos = NULL;
> > + int byte;
> > + u8 *next = NULL;
> > + enum mxc_jpeg_image_format img_fmt;
> > + u32 fourcc;
> > +
> > + memset(&sof, 0, sizeof(struct mxc_jpeg_sof));
> > + stream.addr = src_addr;
> > + stream.end = size;
> > + stream.loc = 0;
> > + *dht_needed = true;
> > +
> > + /* check stream starts with SOI */
> > + byte = get_byte(&stream);
> > + if (byte == -1 || byte != 0xFF)
> > + return -EINVAL;
> > + byte = get_byte(&stream);
> > + if (byte == -1 || byte != 0xD8)
> > + return -EINVAL;
> > +
> > + while (notfound) {
> > + byte = get_byte(&stream);
> > + if (byte == -1)
> > + return -EINVAL;
> > + if (byte != 0xff)
> > + continue;
> > + do {
> > + byte = get_byte(&stream);
> > + } while (byte == 0xff);
> > + if (byte == -1)
> > + return false;
> > + if (byte == 0)
> > + continue;
> > + switch (byte) {
> > + case DHT:
> > + /* DHT marker present, no need to inject
> > default one */
> > + *dht_needed = false;
> > + break;
> > + case SOF2: /* Progressive DCF frame definition */
> > + dev_err(dev,
> > + "Progressive JPEG not supported by
> > hardware");
> > + return -EINVAL;
> > + case SOF1: /* Extended sequential DCF frame
> > definition */
> > + case SOF0: /* Baseline sequential DCF frame
> > definition */
> > + if (get_sof(dev, &stream, &sof) == -1)
> > + break;
> > + next = stream.addr + stream.loc;
> > + psof = (struct mxc_jpeg_sof *)next;
> > + break;
> > + case SOS:
> > + next = stream.addr + stream.loc;
> > + psos = (struct mxc_jpeg_sos *)next;
> > + notfound = false;
> > + break;
> > + case APP14:
> > + app14 = true;
> > + /*
> > + * Application Data Syntax is:
> > + * 2 bytes(APPn:0xFF,0xEE), 2 bytes(Lp),
> > Ap1...ApLp-2
> > + * The transform flag is in Ap12
> > + * stream.loc is now on APPn-0xEE byte
> > + */
> > + app14_transform = *(stream.addr + stream.loc
> > + 12 + 1);
> > + break;
> > + default:
> > + notfound = true;
> > + }
> > + }
> > + q_data_out = mxc_jpeg_get_q_data(ctx,
> > + V4L2_BUF_TYPE_VIDEO_OUTPUT_M
> > PLANE);
> > + if (q_data_out->w == 0 && q_data_out->h == 0) {
> > + dev_warn(dev, "Invalid user resolution 0x0");
> > + dev_warn(dev, "Keeping resolution from JPEG: %dx%d",
> > + sof.width, sof.height);
> > + q_data_out->w = sof.width;
> > + q_data_out->h = sof.height;
> > + } else if (sof.width != q_data_out->w || sof.height !=
> > q_data_out->h) {
> > + dev_err(dev,
> > + "Resolution mismatch: %dx%d (JPEG) versus
> > %dx%d(user)",
> > + sof.width, sof.height, q_data_out->w,
> > q_data_out->h);
> > + return -EINVAL;
> > + }
> > + if (sof.width % 8 != 0 || sof.height % 8 != 0) {
> > + dev_err(dev, "JPEG width or height not multiple of 8:
> > %dx%d\n",
> > + sof.width, sof.height);
> > + return -EINVAL;
> > + }
> > + if (sof.width > MXC_JPEG_MAX_WIDTH ||
> > + sof.height > MXC_JPEG_MAX_HEIGHT) {
> > + dev_err(dev, "JPEG width or height should be <= 8192:
> > %dx%d\n",
> > + sof.width, sof.height);
> > + return -EINVAL;
> > + }
> > + if (sof.width < MXC_JPEG_MIN_WIDTH ||
> > + sof.height < MXC_JPEG_MIN_HEIGHT) {
> > + dev_err(dev, "JPEG width or height should be > 64:
> > %dx%d\n",
> > + sof.width, sof.height);
> > + return -EINVAL;
> > + }
> > + if (sof.components_no > MXC_JPEG_MAX_COMPONENTS) {
> > + dev_err(dev, "JPEG number of components should be
> > <=%d",
> > + MXC_JPEG_MAX_COMPONENTS);
> > + return -EINVAL;
> > + }
> > + /* check and, if necessary, patch component IDs*/
> > + if (!mxc_jpeg_valid_comp_id(dev, psof, psos))
> > + dev_warn(dev, "JPEG component ids should be 0-3 or 1-
> > 4");
> > +
> > + img_fmt = mxc_jpeg_get_image_format(dev, &sof);
> > + if (img_fmt == MXC_JPEG_INVALID)
> > + return -EINVAL;
> > +
> > + /*
> > + * If the transform flag from APP14 marker is 0, images that
> > are
> > + * encoded with 3 components have RGB colorspace, see
> > Recommendation
> > + * ITU-T T.872 chapter 6.5.3 APP14 marker segment for colour
> > encoding
> > + */
> > + if (img_fmt == MXC_JPEG_YUV444 && app14 && app14_transform ==
> > 0)
> > + img_fmt = MXC_JPEG_RGB;
> > +
> > + if (mxc_jpeg_imgfmt_to_fourcc(img_fmt, &fourcc)) {
> > + dev_err(dev, "Fourcc not found for %d", img_fmt);
> > + return -EINVAL;
> > + }
> > +
> > + /*
> > + * set-up the capture queue with the pixelformat and
> > resolution
> > + * detected from the jpeg output stream
> > + */
> > + q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
> > + if (q_data_cap->w != sof.width || q_data_cap->h !=
> > sof.height)
> > + src_chg = true;
> > + q_data_cap->w = sof.width;
> > + q_data_cap->h = sof.height;
> > + q_data_cap->fmt = mxc_jpeg_find_format(ctx, fourcc);
> > + q_data_cap->w_adjusted = q_data_cap->w;
> > + q_data_cap->h_adjusted = q_data_cap->h;
> > + /*
> > + * align up the resolution for CAST IP,
> > + * but leave the buffer resolution unchanged
> > + */
> > + v4l_bound_align_image(&q_data_cap->w_adjusted,
> > + q_data_cap->w_adjusted, /* adjust up
> > */
> > + MXC_JPEG_MAX_WIDTH,
> > + q_data_cap->fmt->h_align,
> > + &q_data_cap->h_adjusted,
> > + q_data_cap->h_adjusted, /* adjust up */
> > + MXC_JPEG_MAX_HEIGHT,
> > + q_data_cap->fmt->v_align,
> > + 0);
> > + dev_dbg(dev, "Detected jpeg res=(%dx%d)->(%dx%d),
> > pixfmt=%c%c%c%c\n",
> > + q_data_cap->w, q_data_cap->h,
> > + q_data_cap->w_adjusted, q_data_cap->h_adjusted,
> > + (fourcc & 0xff),
> > + (fourcc >> 8) & 0xff,
> > + (fourcc >> 16) & 0xff,
> > + (fourcc >> 24) & 0xff);
> > +
> > + /* setup bytesperline/sizeimage for capture queue */
> > + mxc_jpeg_bytesperline(q_data_cap, sof.precision);
> > + mxc_jpeg_sizeimage(q_data_cap);
> > +
> > + /*
> > + * if the CAPTURE format was updated with new values,
> > regardless of
> > + * whether they match the values set by the client or not,
> > signal
> > + * a source change event
> > + */
> > + if (src_chg)
> > + notify_src_chg(ctx);
> > +
> > + return 0;
> > +}
> > +
> > +static void mxc_jpeg_buf_queue(struct vb2_buffer *vb)
> > +{
> > + int ret;
> > + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> > + struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> > + struct mxc_jpeg_src_buf *jpeg_src_buf;
> > +
> > + if (vb->vb2_queue->type ==
> > V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
> > + goto end;
> > +
> > + /* for V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE */
> > + if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE)
> > + goto end;
> > +
> > + jpeg_src_buf = vb2_to_mxc_buf(vb);
> > + jpeg_src_buf->jpeg_parse_error = false;
> > + ret = mxc_jpeg_parse(ctx,
> > + (u8 *)vb2_plane_vaddr(vb, 0),
> > + vb2_get_plane_payload(vb, 0),
> > + &jpeg_src_buf->dht_needed);
> > + if (ret)
> > + jpeg_src_buf->jpeg_parse_error = true;
> > +
> > +end:
> > + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
> > +}
> > +
> > +static int mxc_jpeg_buf_out_validate(struct vb2_buffer *vb)
> > +{
> > + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> > +
> > + if (vbuf->field == V4L2_FIELD_ANY)
>
> Drop this 'if'
>
> > + vbuf->field = V4L2_FIELD_NONE;
>
> and always set this to V4L2_FIELD_NONE.
>
> > +
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_buf_prepare(struct vb2_buffer *vb)
> > +{
> > + struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> > + struct mxc_jpeg_q_data *q_data = NULL;
> > + struct device *dev = ctx->mxc_jpeg->dev;
> > + unsigned long sizeimage;
> > + int i;
> > +
> > + q_data = mxc_jpeg_get_q_data(ctx, vb->vb2_queue->type);
> > + if (!q_data)
> > + return -EINVAL;
> > + for (i = 0; i < q_data->fmt->colplanes; i++) {
> > + sizeimage = q_data->sizeimage[i];
> > + if (vb2_plane_size(vb, i) < sizeimage) {
> > + dev_err(dev, "plane %d too small (%lu <
> > %lu)",
> > + i, vb2_plane_size(vb, i), sizeimage);
> > + return -EINVAL;
> > + }
> > + vb2_set_plane_payload(vb, i, sizeimage);
> > + }
> > + return 0;
> > +}
> > +
> > +static const struct vb2_ops mxc_jpeg_qops = {
> > + .queue_setup = mxc_jpeg_queue_setup,
> > + .wait_prepare = vb2_ops_wait_prepare,
> > + .wait_finish = vb2_ops_wait_finish,
> > + .buf_out_validate = mxc_jpeg_buf_out_validate,
> > + .buf_prepare = mxc_jpeg_buf_prepare,
> > + .start_streaming = mxc_jpeg_start_streaming,
> > + .stop_streaming = mxc_jpeg_stop_streaming,
> > + .buf_queue = mxc_jpeg_buf_queue,
> > +};
> > +
> > +static int mxc_jpeg_queue_init(void *priv, struct vb2_queue
> > *src_vq,
> > + struct vb2_queue *dst_vq)
> > +{
> > + struct mxc_jpeg_ctx *ctx = priv;
> > + int ret;
> > +
> > + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
> > + src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> > + src_vq->drv_priv = ctx;
> > + src_vq->buf_struct_size = sizeof(struct mxc_jpeg_src_buf);
> > + src_vq->ops = &mxc_jpeg_qops;
> > + src_vq->mem_ops = &vb2_dma_contig_memops;
> > + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> > + src_vq->lock = &ctx->mxc_jpeg->lock;
> > + src_vq->dev = ctx->mxc_jpeg->dev;
> > + src_vq->allow_zero_bytesused = 1; /* keep old userspace apps
> > working */
> > +
> > + ret = vb2_queue_init(src_vq);
> > + if (ret)
> > + return ret;
> > +
> > + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> > + dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> > + dst_vq->drv_priv = ctx;
> > + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> > + dst_vq->ops = &mxc_jpeg_qops;
> > + dst_vq->mem_ops = &vb2_dma_contig_memops;
> > + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> > + dst_vq->lock = &ctx->mxc_jpeg->lock;
> > + dst_vq->dev = ctx->mxc_jpeg->dev;
> > +
> > + ret = vb2_queue_init(dst_vq);
> > + return ret;
> > +}
> > +
> > +static void mxc_jpeg_set_default_params(struct mxc_jpeg_ctx *ctx)
> > +{
> > + struct mxc_jpeg_q_data *out_q = &ctx->out_q;
> > + struct mxc_jpeg_q_data *cap_q = &ctx->cap_q;
> > + struct mxc_jpeg_q_data *q[2] = {out_q, cap_q};
> > + int i;
> > +
> > + if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE) {
> > + out_q->fmt = mxc_jpeg_find_format(ctx,
> > MXC_JPEG_DEFAULT_PFMT);
> > + cap_q->fmt = mxc_jpeg_find_format(ctx,
> > V4L2_PIX_FMT_JPEG);
> > + } else {
> > + out_q->fmt = mxc_jpeg_find_format(ctx,
> > V4L2_PIX_FMT_JPEG);
> > + cap_q->fmt = mxc_jpeg_find_format(ctx,
> > MXC_JPEG_DEFAULT_PFMT);
> > + }
> > +
> > + for (i = 0; i < 2; i++) {
> > + q[i]->w = MXC_JPEG_DEFAULT_WIDTH;
> > + q[i]->h = MXC_JPEG_DEFAULT_HEIGHT;
> > + q[i]->w_adjusted = MXC_JPEG_DEFAULT_WIDTH;
> > + q[i]->h_adjusted = MXC_JPEG_DEFAULT_HEIGHT;
> > + mxc_jpeg_bytesperline(q[i], 8);
> > + mxc_jpeg_sizeimage(q[i]);
> > + }
> > +}
> > +
> > +static int mxc_jpeg_open(struct file *file)
> > +{
> > + struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
> > + struct video_device *mxc_vfd = video_devdata(file);
> > + struct device *dev = mxc_jpeg->dev;
> > + struct mxc_jpeg_ctx *ctx;
> > + int ret = 0;
> > +
> > + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> > + if (!ctx)
> > + return -ENOMEM;
> > +
> > + if (mutex_lock_interruptible(&mxc_jpeg->lock)) {
> > + ret = -ERESTARTSYS;
> > + goto free;
> > + }
> > +
> > + v4l2_fh_init(&ctx->fh, mxc_vfd);
> > + file->private_data = &ctx->fh;
> > + v4l2_fh_add(&ctx->fh);
> > +
> > + ctx->mxc_jpeg = mxc_jpeg;
> > +
> > + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(mxc_jpeg->m2m_dev, ctx,
> > + mxc_jpeg_queue_init);
> > +
> > + if (IS_ERR(ctx->fh.m2m_ctx)) {
> > + ret = PTR_ERR(ctx->fh.m2m_ctx);
> > + goto error;
> > + }
> > +
> > + mxc_jpeg_set_default_params(ctx);
> > + ctx->slot = MXC_MAX_SLOTS; /* slot not allocated yet */
> > +
> > + if (mxc_jpeg->mode == MXC_JPEG_DECODE)
> > + dev_dbg(dev, "Opened JPEG decoder instance %p\n",
> > ctx);
> > + else
> > + dev_dbg(dev, "Opened JPEG encoder instance %p\n",
> > ctx);
> > + mutex_unlock(&mxc_jpeg->lock);
> > +
> > + return 0;
> > +
> > +error:
> > + v4l2_fh_del(&ctx->fh);
> > + v4l2_fh_exit(&ctx->fh);
> > + mutex_unlock(&mxc_jpeg->lock);
> > +free:
> > + kfree(ctx);
> > + return ret;
> > +}
> > +
> > +static int mxc_jpeg_querycap(struct file *file, void *priv,
> > + struct v4l2_capability *cap)
> > +{
> > + struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
> > +
> > + strscpy(cap->driver, MXC_JPEG_NAME " decoder", sizeof(cap-
> > >driver));
> > + strscpy(cap->card, MXC_JPEG_NAME " decoder", sizeof(cap-
> > >card));
>
> For the two lines above: decoder -> codec
>
> Since this driver is used for both encoder and decoder, so it is odd
> to
> see 'decoder' for video1 as well. Just name it 'codec'.
>
> > + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
> > + dev_name(mxc_jpeg->dev));
> > + cap->device_caps = V4L2_CAP_STREAMING |
> > V4L2_CAP_VIDEO_M2M_MPLANE;
> > + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
> > +
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_enum_fmt_vid_cap(struct file *file, void
> > *priv,
> > + struct v4l2_fmtdesc *f)
> > +{
> > + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> > +
> > + if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE)
> > + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
> > + MXC_JPEG_FMT_TYPE_ENC);
> > + else
> > + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
> > + MXC_JPEG_FMT_TYPE_RAW);
> > +}
> > +
> > +static int mxc_jpeg_enum_fmt_vid_out(struct file *file, void
> > *priv,
> > + struct v4l2_fmtdesc *f)
> > +{
> > + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> > +
> > + if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE)
> > + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
> > + MXC_JPEG_FMT_TYPE_ENC);
> > + else
> > + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
> > + MXC_JPEG_FMT_TYPE_RAW);
> > +}
> > +
> > +static int mxc_jpeg_try_fmt(struct v4l2_format *f, struct
> > mxc_jpeg_fmt *fmt,
> > + struct mxc_jpeg_ctx *ctx, int q_type)
> > +{
> > + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> > + struct v4l2_plane_pix_format *pfmt;
> > + u32 w = (pix_mp->width < MXC_JPEG_MAX_WIDTH) ?
> > + pix_mp->width : MXC_JPEG_MAX_WIDTH;
> > + u32 h = (pix_mp->height < MXC_JPEG_MAX_HEIGHT) ?
> > + pix_mp->height : MXC_JPEG_MAX_HEIGHT;
> > + int i;
> > + struct mxc_jpeg_q_data tmp_q;
> > +
> > + memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
> > + pix_mp->field = V4L2_FIELD_NONE;
> > + pix_mp->num_planes = fmt->colplanes;
> > + pix_mp->pixelformat = fmt->fourcc;
> > +
> > + /*
> > + * use MXC_JPEG_H_ALIGN instead of fmt->v_align, for vertical
> > + * alignment, to loosen up the alignment to multiple of 8,
> > + * otherwise NV12-1080p fails as 1080 is not a multiple of 16
> > + */
> > + v4l_bound_align_image(&w,
> > + MXC_JPEG_MIN_WIDTH,
> > + w, /* adjust downwards*/
> > + fmt->h_align,
> > + &h,
> > + MXC_JPEG_MIN_HEIGHT,
> > + h, /* adjust downwards*/
> > + MXC_JPEG_H_ALIGN,
> > + 0);
> > + pix_mp->width = w; /* negotiate the width */
> > + pix_mp->height = h; /* negotiate the height */
> > +
> > + /* get user input into the tmp_q */
> > + tmp_q.w = w;
> > + tmp_q.h = h;
> > + tmp_q.fmt = fmt;
> > + for (i = 0; i < pix_mp->num_planes; i++) {
> > + pfmt = &pix_mp->plane_fmt[i];
> > + tmp_q.bytesperline[i] = pfmt->bytesperline;
> > + tmp_q.sizeimage[i] = pfmt->sizeimage;
> > + }
> > +
> > + /* calculate bytesperline & sizeimage into the tmp_q */
> > + mxc_jpeg_bytesperline(&tmp_q, 8);
> > + mxc_jpeg_sizeimage(&tmp_q);
> > +
> > + /* adjust user format according to our calculations */
> > + for (i = 0; i < pix_mp->num_planes; i++) {
> > + pfmt = &pix_mp->plane_fmt[i];
> > + memset(pfmt->reserved, 0, sizeof(pfmt->reserved));
> > + pfmt->bytesperline = tmp_q.bytesperline[i];
> > + pfmt->sizeimage = tmp_q.sizeimage[i];
> > + }
> > +
> > + /* fix colorspace information to sRGB for both output &
> > capture */
> > + pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
> > + pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
> > + pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
> > + pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
>
> So YUV formats are expected to be full range as well? Both when
> encoding
> and decoding?
I set the colorspace information like that based on this comment:
/*
* Effectively shorthand for V4L2_COLORSPACE_SRGB,
V4L2_YCBCR_ENC_601
* and V4L2_QUANTIZATION_FULL_RANGE. To be used for (Motion-
)JPEG.
*/
V4L2_COLORSPACE_JPEG = 7,
Also, I looked at mtk_jpeg_set_default_params for example.
Let me know if you have a different suggestion.
Thanks,
Mirela
>
> > +
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_try_fmt_vid_cap(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> > + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> > + struct device *dev = jpeg->dev;
> > + struct mxc_jpeg_fmt *fmt;
> > + u32 fourcc = f->fmt.pix_mp.pixelformat;
> > +
> > + int q_type = (jpeg->mode == MXC_JPEG_DECODE) ?
> > + MXC_JPEG_FMT_TYPE_RAW : MXC_JPEG_FMT_TYPE_ENC;
> > +
> > + if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
> > + dev_err(dev, "TRY_FMT with Invalid type: %d\n", f-
> > >type);
> > + return -EINVAL;
> > + }
> > +
> > + fmt = mxc_jpeg_find_format(ctx, fourcc);
> > + if (!fmt || fmt->flags != q_type) {
> > + dev_warn(dev, "Format not supported: %c%c%c%c, use
> > the default.\n",
> > + (fourcc & 0xff),
> > + (fourcc >> 8) & 0xff,
> > + (fourcc >> 16) & 0xff,
> > + (fourcc >> 24) & 0xff);
> > + f->fmt.pix_mp.pixelformat = (jpeg->mode ==
> > MXC_JPEG_DECODE) ?
> > + MXC_JPEG_DEFAULT_PFMT :
> > V4L2_PIX_FMT_JPEG;
> > + fmt = mxc_jpeg_find_format(ctx, f-
> > >fmt.pix_mp.pixelformat);
> > + }
> > + return mxc_jpeg_try_fmt(f, fmt, ctx, q_type);
> > +}
> > +
> > +static int mxc_jpeg_try_fmt_vid_out(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> > + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> > + struct device *dev = jpeg->dev;
> > + struct mxc_jpeg_fmt *fmt;
> > + u32 fourcc = f->fmt.pix_mp.pixelformat;
> > +
> > + int q_type = (jpeg->mode == MXC_JPEG_ENCODE) ?
> > + MXC_JPEG_FMT_TYPE_RAW : MXC_JPEG_FMT_TYPE_ENC;
> > +
> > + if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
> > + dev_err(dev, "TRY_FMT with Invalid type: %d\n", f-
> > >type);
> > + return -EINVAL;
> > + }
> > +
> > + fmt = mxc_jpeg_find_format(ctx, fourcc);
> > + if (!fmt || fmt->flags != q_type) {
> > + dev_warn(dev, "Format not supported: %c%c%c%c, use
> > the default.\n",
> > + (fourcc & 0xff),
> > + (fourcc >> 8) & 0xff,
> > + (fourcc >> 16) & 0xff,
> > + (fourcc >> 24) & 0xff);
> > + f->fmt.pix_mp.pixelformat = (jpeg->mode ==
> > MXC_JPEG_ENCODE) ?
> > + MXC_JPEG_DEFAULT_PFMT :
> > V4L2_PIX_FMT_JPEG;
> > + fmt = mxc_jpeg_find_format(ctx, f-
> > >fmt.pix_mp.pixelformat);
> > + }
> > + return mxc_jpeg_try_fmt(f, fmt, ctx, q_type);
> > +}
> > +
> > +static int mxc_jpeg_s_fmt(struct mxc_jpeg_ctx *ctx,
> > + struct v4l2_format *f)
> > +{
> > + struct vb2_queue *vq;
> > + struct mxc_jpeg_q_data *q_data = NULL;
> > + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> > + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> > + int i;
> > +
> > + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> > + if (!vq)
> > + return -EINVAL;
> > +
> > + q_data = mxc_jpeg_get_q_data(ctx, f->type);
> > +
> > + if (vb2_is_busy(vq)) {
> > + v4l2_err(&jpeg->v4l2_dev, "queue busy\n");
> > + return -EBUSY;
> > + }
> > +
> > + q_data->fmt = mxc_jpeg_find_format(ctx, pix_mp->pixelformat);
> > + q_data->w = pix_mp->width;
> > + q_data->h = pix_mp->height;
> > +
> > + q_data->w_adjusted = q_data->w;
> > + q_data->h_adjusted = q_data->h;
> > + if (jpeg->mode == MXC_JPEG_DECODE) {
> > + /*
> > + * align up the resolution for CAST IP,
> > + * but leave the buffer resolution unchanged
> > + */
> > + v4l_bound_align_image(&q_data->w_adjusted,
> > + q_data->w_adjusted, /* adjust
> > upwards */
> > + MXC_JPEG_MAX_WIDTH,
> > + q_data->fmt->h_align,
> > + &q_data->h_adjusted,
> > + q_data->h_adjusted, /* adjust
> > upwards */
> > + MXC_JPEG_MAX_HEIGHT,
> > + q_data->fmt->v_align,
> > + 0);
> > + } else {
> > + /*
> > + * align down the resolution for CAST IP,
> > + * but leave the buffer resolution unchanged
> > + */
> > + v4l_bound_align_image(&q_data->w_adjusted,
> > + MXC_JPEG_MIN_WIDTH,
> > + q_data->w_adjusted, /* adjust
> > downwards*/
> > + q_data->fmt->h_align,
> > + &q_data->h_adjusted,
> > + MXC_JPEG_MIN_HEIGHT,
> > + q_data->h_adjusted, /* adjust
> > downwards*/
> > + q_data->fmt->v_align,
> > + 0);
> > + }
> > +
> > + for (i = 0; i < pix_mp->num_planes; i++) {
> > + q_data->bytesperline[i] = pix_mp-
> > >plane_fmt[i].bytesperline;
> > + q_data->sizeimage[i] = pix_mp-
> > >plane_fmt[i].sizeimage;
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_s_fmt_vid_cap(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + int ret;
> > +
> > + ret = mxc_jpeg_try_fmt_vid_cap(file, priv, f);
> > + if (ret)
> > + return ret;
> > +
> > + return mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f);
> > +}
> > +
> > +static int mxc_jpeg_s_fmt_vid_out(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + int ret;
> > +
> > + ret = mxc_jpeg_try_fmt_vid_out(file, priv, f);
> > + if (ret)
> > + return ret;
> > +
> > + return mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f);
> > +}
> > +
> > +static int mxc_jpeg_g_fmt_vid(struct file *file, void *priv,
> > + struct v4l2_format *f)
> > +{
> > + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> > + struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
> > + struct device *dev = jpeg->dev;
> > + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> > + struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, f-
> > >type);
> > + int i;
> > +
> > + if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
> > + dev_err(dev, "G_FMT with Invalid type: %d\n", f-
> > >type);
> > + return -EINVAL;
> > + }
> > +
> > + pix_mp->pixelformat = q_data->fmt->fourcc;
> > + pix_mp->width = q_data->w;
> > + pix_mp->height = q_data->h;
> > + pix_mp->field = V4L2_FIELD_NONE;
> > +
> > + /* fix colorspace information to sRGB for both output &
> > capture */
> > + pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
> > + pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
> > + pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
> > + pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
> > +
> > + pix_mp->num_planes = q_data->fmt->colplanes;
> > + for (i = 0; i < pix_mp->num_planes; i++) {
> > + pix_mp->plane_fmt[i].bytesperline = q_data-
> > >bytesperline[i];
> > + pix_mp->plane_fmt[i].sizeimage = q_data-
> > >sizeimage[i];
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static int mxc_jpeg_subscribe_event(struct v4l2_fh *fh,
> > + const struct
> > v4l2_event_subscription *sub)
> > +{
> > + switch (sub->type) {
> > + case V4L2_EVENT_EOS:
> > + return v4l2_event_subscribe(fh, sub, 0, NULL);
> > + case V4L2_EVENT_SOURCE_CHANGE:
> > + return v4l2_src_change_event_subscribe(fh, sub);
> > + default:
> > + return -EINVAL;
> > + }
> > +}
> > +
> > +static int mxc_jpeg_qbuf(struct file *file, void *priv,
> > + struct v4l2_buffer *buf)
> > +{
> > + struct v4l2_fh *fh = file->private_data;
> > + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> > + struct device *dev = ctx->mxc_jpeg->dev;
> > + struct vb2_queue *vq;
> > +
> > + dev_dbg(dev, "QBUF type=%d, index=%d", buf->type, buf-
> > >index);
> > + vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
> > + if (buf->index >= vq->num_buffers) {
>
> Why this test? There should be no need for this function,
> v4l2_m2m_ioctl_qbuf() should do the right thing here.
>
> > + dev_err(dev, "buffer index out of range\n");
> > + return -EINVAL;
> > + }
> > +
> > + return v4l2_m2m_qbuf(file, fh->m2m_ctx, buf);
> > +}
> > +
> > +static int mxc_jpeg_dqbuf(struct file *file, void *priv,
> > + struct v4l2_buffer *buf)
> > +{
> > + struct v4l2_fh *fh = file->private_data;
> > + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
> > + struct device *dev = ctx->mxc_jpeg->dev;
> > + int num_src_ready = v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx);
> > + int ret;
> > +
> > + dev_dbg(dev, "DQBUF type=%d, index=%d", buf->type, buf-
> > >index);
> > + if (ctx->stopping == 1 && num_src_ready == 0) {
> > + /* No more src bufs, notify app EOS */
> > + notify_eos(ctx);
> > + ctx->stopping = 0;
> > + }
> > +
> > + ret = v4l2_m2m_dqbuf(file, fh->m2m_ctx, buf);
> > + buf->field = V4L2_FIELD_NONE;
>
> This line belongs in mxc_jpeg_buf_prepare().
>
> > +
> > + return ret;
> > +}
> > +
> > +static const struct v4l2_ioctl_ops mxc_jpeg_ioctl_ops = {
> > + .vidioc_querycap = mxc_jpeg_querycap,
> > + .vidioc_enum_fmt_vid_cap = mxc_jpeg_enum_fmt_vid_cap,
> > + .vidioc_enum_fmt_vid_out = mxc_jpeg_enum_fmt_vid_out,
> > +
> > + .vidioc_try_fmt_vid_cap_mplane = mxc_jpeg_try_fmt_vid_cap,
> > + .vidioc_try_fmt_vid_out_mplane = mxc_jpeg_try_fmt_vid_out,
> > +
> > + .vidioc_s_fmt_vid_cap_mplane = mxc_jpeg_s_fmt_vid_cap,
> > + .vidioc_s_fmt_vid_out_mplane = mxc_jpeg_s_fmt_vid_out,
> > +
> > + .vidioc_g_fmt_vid_cap_mplane = mxc_jpeg_g_fmt_vid,
> > + .vidioc_g_fmt_vid_out_mplane = mxc_jpeg_g_fmt_vid,
> > +
> > + .vidioc_subscribe_event = mxc_jpeg_subscribe_event,
> > + .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
> > +
> > + .vidioc_try_decoder_cmd = mxc_jpeg_try_decoder_cmd,
>
> This can be replaced by v4l2_m2m_ioctl_try_decoder_cmd
>
> > + .vidioc_decoder_cmd = mxc_jpeg_decoder_cmd,
> > + .vidioc_try_encoder_cmd = mxc_jpeg_try_encoder_cmd,
>
> and this by v4l2_m2m_ioctl_try_encoder_cmd.
>
> > + .vidioc_encoder_cmd = mxc_jpeg_encoder_cmd,
> > +
> > + .vidioc_qbuf = mxc_jpeg_qbuf,
> > + .vidioc_dqbuf = mxc_jpeg_dqbuf,
> > +
> > + .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
> > + .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
> > + .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
> > + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
> > + .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
> > + .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> > + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> > +};
> > +
> > +static int mxc_jpeg_release(struct file *file)
> > +{
> > + struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
> > + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(file-
> > >private_data);
> > + struct device *dev = mxc_jpeg->dev;
> > +
> > + mutex_lock(&mxc_jpeg->lock);
> > + if (mxc_jpeg->mode == MXC_JPEG_DECODE)
> > + dev_dbg(dev, "Release JPEG decoder instance on slot
> > %d.",
> > + ctx->slot);
> > + else
> > + dev_dbg(dev, "Release JPEG encoder instance on slot
> > %d.",
> > + ctx->slot);
> > + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> > + v4l2_fh_del(&ctx->fh);
> > + v4l2_fh_exit(&ctx->fh);
> > + kfree(ctx);
> > + mutex_unlock(&mxc_jpeg->lock);
> > +
> > + return 0;
> > +}
> > +
> > +static const struct v4l2_file_operations mxc_jpeg_fops = {
> > + .owner = THIS_MODULE,
> > + .open = mxc_jpeg_open,
> > + .release = mxc_jpeg_release,
> > + .poll = v4l2_m2m_fop_poll,
> > + .unlocked_ioctl = video_ioctl2,
> > + .mmap = v4l2_m2m_fop_mmap,
> > +};
> > +
> > +static struct v4l2_m2m_ops mxc_jpeg_m2m_ops = {
> > + .device_run = mxc_jpeg_device_run,
> > +};
> > +
> > +static void mxc_jpeg_detach_pm_domains(struct mxc_jpeg_dev *jpeg)
> > +{
> > + int i;
> > +
> > + for (i = 0; i < jpeg->num_domains; i++) {
> > + if (jpeg->pd_link[i] && !IS_ERR(jpeg->pd_link[i]))
> > + device_link_del(jpeg->pd_link[i]);
> > + if (jpeg->pd_dev[i] && !IS_ERR(jpeg->pd_dev[i]))
> > + dev_pm_domain_detach(jpeg->pd_dev[i], true);
> > + jpeg->pd_dev[i] = NULL;
> > + jpeg->pd_link[i] = NULL;
> > + }
> > +}
> > +
> > +static int mxc_jpeg_attach_pm_domains(struct mxc_jpeg_dev *jpeg)
> > +{
> > + struct device *dev = jpeg->dev;
> > + struct device_node *np = jpeg->pdev->dev.of_node;
> > + int i;
> > + int ret;
> > +
> > + jpeg->num_domains = of_count_phandle_with_args(np, "power-
> > domains",
> > + "#power-
> > domain-cells");
> > + if (jpeg->num_domains < 0) {
> > + dev_err(dev, "No power domains defined for jpeg
> > node\n");
> > + return jpeg->num_domains;
> > + }
> > +
> > + jpeg->pd_dev = devm_kmalloc_array(dev, jpeg->num_domains,
> > + sizeof(*jpeg->pd_dev),
> > GFP_KERNEL);
> > + if (!jpeg->pd_dev)
> > + return -ENOMEM;
> > +
> > + jpeg->pd_link = devm_kmalloc_array(dev, jpeg->num_domains,
> > + sizeof(*jpeg->pd_link),
> > GFP_KERNEL);
> > + if (!jpeg->pd_link)
> > + return -ENOMEM;
> > +
> > + for (i = 0; i < jpeg->num_domains; i++) {
> > + jpeg->pd_dev[i] = dev_pm_domain_attach_by_id(dev, i);
> > + if (IS_ERR(jpeg->pd_dev[i])) {
> > + ret = PTR_ERR(jpeg->pd_dev[i]);
> > + goto fail;
> > + }
> > +
> > + jpeg->pd_link[i] = device_link_add(dev, jpeg-
> > >pd_dev[i],
> > + DL_FLAG_STATELESS
> > |
> > + DL_FLAG_PM_RUNTIME
> > |
> > + DL_FLAG_RPM_ACTIVE
> > );
> > + if (IS_ERR(jpeg->pd_link[i])) {
> > + ret = PTR_ERR(jpeg->pd_link[i]);
> > + goto fail;
> > + }
> > + }
> > +
> > + return 0;
> > +fail:
> > + mxc_jpeg_detach_pm_domains(jpeg);
> > + return ret;
> > +}
> > +
> > +static int mxc_jpeg_probe(struct platform_device *pdev)
> > +{
> > + struct mxc_jpeg_dev *jpeg;
> > + struct device *dev = &pdev->dev;
> > + struct resource *res;
> > + int dec_irq;
> > + int ret;
> > + int mode;
> > + const struct of_device_id *of_id;
> > + unsigned int slot;
> > +
> > + of_id = of_match_node(mxc_jpeg_match, dev->of_node);
> > + mode = (int)(u64)of_id->data;
> > +
> > + jpeg = devm_kzalloc(dev, sizeof(struct mxc_jpeg_dev),
> > GFP_KERNEL);
> > + if (!jpeg)
> > + return -ENOMEM;
> > +
> > + mutex_init(&jpeg->lock);
> > + spin_lock_init(&jpeg->hw_lock);
> > +
> > + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
> > + if (ret) {
> > + dev_err(&pdev->dev, "No suitable DMA available.\n");
> > + goto err_irq;
> > + }
> > +
> > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > + jpeg->base_reg = devm_ioremap_resource(&pdev->dev, res);
> > + if (IS_ERR(jpeg->base_reg))
> > + return PTR_ERR(jpeg->base_reg);
> > +
> > + for (slot = 0; slot < MXC_MAX_SLOTS; slot++) {
> > + dec_irq = platform_get_irq(pdev, slot);
> > + if (dec_irq < 0) {
> > + dev_err(&pdev->dev, "Failed to get irq %d\n",
> > dec_irq);
> > + ret = dec_irq;
> > + goto err_irq;
> > + }
> > + ret = devm_request_irq(&pdev->dev, dec_irq,
> > mxc_jpeg_dec_irq,
> > + 0, pdev->name, jpeg);
> > + if (ret) {
> > + dev_err(&pdev->dev, "Failed to request irq %d
> > (%d)\n",
> > + dec_irq, ret);
> > + goto err_irq;
> > + }
> > + }
> > +
> > + jpeg->pdev = pdev;
> > + jpeg->dev = dev;
> > + jpeg->mode = mode;
> > +
> > + ret = mxc_jpeg_attach_pm_domains(jpeg);
> > + if (ret < 0) {
> > + dev_err(dev, "failed to attach power domains %d\n",
> > ret);
> > + return ret;
> > + }
> > +
> > + /* v4l2 */
> > + ret = v4l2_device_register(dev, &jpeg->v4l2_dev);
> > + if (ret) {
> > + dev_err(dev, "failed to register v4l2 device\n");
> > + goto err_register;
> > + }
> > + jpeg->m2m_dev = v4l2_m2m_init(&mxc_jpeg_m2m_ops);
> > + if (IS_ERR(jpeg->m2m_dev)) {
> > + dev_err(dev, "failed to register v4l2 device\n");
> > + goto err_m2m;
> > + }
> > +
> > + jpeg->dec_vdev = video_device_alloc();
> > + if (!jpeg->dec_vdev) {
> > + dev_err(dev, "failed to register v4l2 device\n");
> > + goto err_vdev_alloc;
> > + }
> > + if (mode == MXC_JPEG_ENCODE)
> > + snprintf(jpeg->dec_vdev->name,
> > + sizeof(jpeg->dec_vdev->name),
> > + "%s-enc", MXC_JPEG_NAME);
> > + else
> > + snprintf(jpeg->dec_vdev->name,
> > + sizeof(jpeg->dec_vdev->name),
> > + "%s-dec", MXC_JPEG_NAME);
> > +
> > + jpeg->dec_vdev->fops = &mxc_jpeg_fops;
> > + jpeg->dec_vdev->ioctl_ops = &mxc_jpeg_ioctl_ops;
> > + jpeg->dec_vdev->minor = -1;
> > + jpeg->dec_vdev->release = video_device_release;
> > + jpeg->dec_vdev->lock = &jpeg->lock; /* lock for ioctl
> > serialization */
> > + jpeg->dec_vdev->v4l2_dev = &jpeg->v4l2_dev;
> > + jpeg->dec_vdev->vfl_dir = VFL_DIR_M2M;
> > + jpeg->dec_vdev->device_caps = V4L2_CAP_STREAMING |
> > + V4L2_CAP_VIDEO_M2M_MPLANE;
> > +
> > + ret = video_register_device(jpeg->dec_vdev, VFL_TYPE_VIDEO,
> > -1);
> > + if (ret) {
> > + dev_err(dev, "failed to register video device\n");
> > + goto err_vdev_register;
> > + }
> > + video_set_drvdata(jpeg->dec_vdev, jpeg);
> > + if (mode == MXC_JPEG_ENCODE)
> > + v4l2_info(&jpeg->v4l2_dev,
> > + "encoder device registered as /dev/video%d
> > (%d,%d)\n",
> > + jpeg->dec_vdev->num, VIDEO_MAJOR,
> > + jpeg->dec_vdev->minor);
> > + else
> > + v4l2_info(&jpeg->v4l2_dev,
> > + "decoder device registered as /dev/video%d
> > (%d,%d)\n",
> > + jpeg->dec_vdev->num, VIDEO_MAJOR,
> > + jpeg->dec_vdev->minor);
> > +
> > + platform_set_drvdata(pdev, jpeg);
> > +
> > + return 0;
> > +
> > +err_vdev_register:
> > + video_device_release(jpeg->dec_vdev);
> > +
> > +err_vdev_alloc:
> > + v4l2_m2m_release(jpeg->m2m_dev);
> > +
> > +err_m2m:
> > + v4l2_device_unregister(&jpeg->v4l2_dev);
> > +
> > +err_register:
> > +err_irq:
> > + return ret;
> > +}
> > +
> > +static int mxc_jpeg_remove(struct platform_device *pdev)
> > +{
> > + unsigned int slot;
> > + struct mxc_jpeg_dev *jpeg = platform_get_drvdata(pdev);
> > +
> > + for (slot = 0; slot < MXC_MAX_SLOTS; slot++)
> > + mxc_jpeg_free_slot_data(jpeg, slot);
> > +
> > + video_unregister_device(jpeg->dec_vdev);
> > + video_device_release(jpeg->dec_vdev);
> > + v4l2_m2m_release(jpeg->m2m_dev);
> > + v4l2_device_unregister(&jpeg->v4l2_dev);
> > + mxc_jpeg_detach_pm_domains(jpeg);
> > +
> > + return 0;
> > +}
> > +
> > +MODULE_DEVICE_TABLE(of, mxc_jpeg_match);
> > +
> > +static struct platform_driver mxc_jpeg_driver = {
> > + .probe = mxc_jpeg_probe,
> > + .remove = mxc_jpeg_remove,
> > + .driver = {
> > + .name = "mxc-jpeg",
> > + .of_match_table = mxc_jpeg_match,
> > + },
> > +};
> > +module_platform_driver(mxc_jpeg_driver);
> > +
> > +MODULE_AUTHOR("Zhengyu Shen <zhengyu.shen_1@nxp.com>");
> > +MODULE_AUTHOR("Mirela Rabulea <mirela.rabulea@nxp.com>");
> > +MODULE_DESCRIPTION("V4L2 driver for i.MX8 QXP/QM JPEG
> > encoder/decoder");
> > +MODULE_LICENSE("GPL v2");
> > diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.h
> > b/drivers/media/platform/imx-jpeg/mxc-jpeg.h
> > new file mode 100644
> > index 000000000000..ef1670dafeb4
> > --- /dev/null
> > +++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.h
> > @@ -0,0 +1,184 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
> > + *
> > + * Copyright 2018-2019 NXP
> > + */
> > +
> > +#include <media/v4l2-ctrls.h>
> > +#include <media/v4l2-device.h>
> > +#include <media/v4l2-fh.h>
> > +
> > +#ifndef _MXC_JPEG_CORE_H
> > +#define _MXC_JPEG_CORE_H
> > +
> > +#define MXC_JPEG_NAME "mxc-jpeg"
> > +#define MXC_JPEG_FMT_TYPE_ENC 0
> > +#define MXC_JPEG_FMT_TYPE_RAW 1
> > +#define MXC_JPEG_DEFAULT_WIDTH 1280
> > +#define MXC_JPEG_DEFAULT_HEIGHT 720
> > +#define MXC_JPEG_DEFAULT_PFMT V4L2_PIX_FMT_RGB24
> > +#define MXC_JPEG_MIN_WIDTH 64
> > +#define MXC_JPEG_MIN_HEIGHT 64
> > +#define MXC_JPEG_MAX_WIDTH 0x2000
> > +#define MXC_JPEG_MAX_HEIGHT 0x2000
> > +#define MXC_JPEG_MAX_CFG_STREAM 0x1000
> > +#define MXC_JPEG_H_ALIGN 3
> > +#define MXC_JPEG_W_ALIGN 3
> > +#define MXC_JPEG_MAX_SIZEIMAGE 0xFFFFFC00
> > +#define MXC_JPEG_MAX_PLANES 2
> > +
> > +enum mxc_jpeg_enc_state {
> > + MXC_JPEG_ENCODING = 0, /* jpeg encode phase */
> > + MXC_JPEG_ENC_CONF = 1, /* jpeg encoder config phase */
> > +};
> > +
> > +enum mxc_jpeg_mode {
> > + MXC_JPEG_DECODE = 0, /* jpeg decode mode */
> > + MXC_JPEG_ENCODE = 1, /* jpeg encode mode */
> > +};
> > +
> > +/**
> > + * struct jpeg_fmt - driver's internal color format data
> > + * @name: format description
> > + * @fourcc: fourcc code, 0 if not applicable
> > + * @depth: number of bits per pixel
> > + * @colplanes: number of color planes (1 for packed formats)
> > + * @h_align: horizontal alignment order (align to 2^h_align)
> > + * @v_align: vertical alignment order (align to 2^v_align)
> > + * @flags: flags describing format applicability
> > + */
> > +struct mxc_jpeg_fmt {
> > + char *name;
> > + u32 fourcc;
> > + int depth;
> > + int colplanes;
> > + int h_align;
> > + int v_align;
> > + u32 flags;
> > +};
> > +
> > +struct mxc_jpeg_desc {
> > + u32 next_descpt_ptr;
> > + u32 buf_base0;
> > + u32 buf_base1;
> > + u32 line_pitch;
> > + u32 stm_bufbase;
> > + u32 stm_bufsize;
> > + u32 imgsize;
> > + u32 stm_ctrl;
> > +} __packed;
> > +
> > +struct mxc_jpeg_q_data {
> > + struct mxc_jpeg_fmt *fmt;
> > + u32 sizeimage[MXC_JPEG_MAX_PLANES];
> > + u32 bytesperline[MXC_JPEG_MAX_PLANES];
> > + int w;
> > + int w_adjusted;
> > + int h;
> > + int h_adjusted;
> > + unsigned int sequence;
> > +};
> > +
> > +struct mxc_jpeg_ctx {
> > + struct mxc_jpeg_dev *mxc_jpeg;
> > + struct mxc_jpeg_q_data out_q;
> > + struct mxc_jpeg_q_data cap_q;
> > + struct v4l2_fh fh;
> > + enum mxc_jpeg_enc_state enc_state;
> > + unsigned int stopping;
> > + unsigned int slot;
> > +};
> > +
> > +struct mxc_jpeg_slot_data {
> > + bool used;
> > + struct mxc_jpeg_desc *desc; // enc/dec descriptor
> > + struct mxc_jpeg_desc *cfg_desc; // configuration descriptor
> > + void *cfg_stream_vaddr; // configuration bitstream virtual
> > address
> > + unsigned int cfg_stream_size;
> > + dma_addr_t desc_handle;
> > + dma_addr_t cfg_desc_handle; // configuration descriptor dma
> > address
> > + dma_addr_t cfg_stream_handle; // configuration bitstream dma
> > address
> > +};
> > +
> > +struct mxc_jpeg_dev {
> > + spinlock_t hw_lock; /* hardware access
> > lock */
> > + unsigned int mode;
> > + struct mutex lock; /* v4l2 ioctls
> > serialization */
> > + struct platform_device *pdev;
> > + struct device *dev;
> > + void __iomem *base_reg;
> > + struct v4l2_device v4l2_dev;
> > + struct v4l2_m2m_dev *m2m_dev;
> > + struct video_device *dec_vdev;
> > + struct mxc_jpeg_slot_data slot_data[MXC_MAX_SLOTS];
> > + int num_domains;
> > + struct device **pd_dev;
> > + struct device_link **pd_link;
> > +};
> > +
> > +/* JPEG marker identifiers */
> > +#define SOF0 0xC0
> > +#define SOF1 0xC1
> > +#define SOF2 0xC2
> > +#define SOS 0xDA
> > +#define DHT 0xC4
> > +#define APP14 0xEE
> > +
> > +/**
> > + * struct mxc_jpeg_sof_comp - JPEG Start Of Frame component fields
> > + * @id: component id
> > + * @v: vertical sampling
> > + * @h: horizontal sampling
> > + * @quantization_table_no: id of quantization table
> > + */
> > +struct mxc_jpeg_sof_comp {
> > + u8 id;
> > + u8 v :4;
> > + u8 h :4;
> > + u8 quantization_table_no;
> > +} __packed;
> > +
> > +#define MXC_JPEG_MAX_COMPONENTS 4
> > +/**
> > + * struct mxc_jpeg_sof - JPEG Start Of Frame marker fields
> > + * @length: Start of Frame length
> > + * @precision: precision (bits per pixel per color
> > component)
> > + * @height: image height
> > + * @width: image width
> > + * @components_no: number of color components
> > + * @comp: component fields for each color component
> > + */
> > +struct mxc_jpeg_sof {
> > + u16 length;
> > + u8 precision;
> > + u16 height, width;
> > + u8 components_no;
> > + struct mxc_jpeg_sof_comp comp[MXC_JPEG_MAX_COMPONENTS];
> > +} __packed;
> > +
> > +/**
> > + * struct mxc_jpeg_sof - JPEG Start Of Scan component fields
> > + * @id: component id
> > + * @huffman_table_no: id of the Huffman table
> > + */
> > +struct mxc_jpeg_sos_comp {
> > + u8 id; /*component id*/
> > + u8 huffman_table_no;
> > +} __packed;
> > +
> > +/**
> > + * struct mxc_jpeg_sof - JPEG Start Of Scan marker fields
> > + * @length: Start of Frame length
> > + * @components_no: number of color components
> > + * @comp: SOS component fields for each color component
> > + * @ignorable_bytes: ignorable bytes
> > + */
> > +struct mxc_jpeg_sos {
> > + u16 length;
> > + u8 components_no;
> > + struct mxc_jpeg_sos_comp comp[MXC_JPEG_MAX_COMPONENTS];
> > + u8 ignorable_bytes[3];
> > +} __packed;
> > +
> > +#endif
> >
>
> Regards,
>
> Hans
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [EXT] Re: [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
2021-02-22 19:09 ` [EXT] " Mirela Rabulea
@ 2021-03-04 13:03 ` Hans Verkuil
2021-03-10 12:33 ` Mirela Rabulea
0 siblings, 1 reply; 20+ messages in thread
From: Hans Verkuil @ 2021-03-04 13:03 UTC (permalink / raw)
To: Mirela Rabulea, p.zabel, mchehab, Mirela Rabulea (OSS),
shawnguo, robh+dt
Cc: linux-media, Robert Chiras, dl-linux-imx, s.hauer,
Laurentiu Palcu, mark.rutland, linux-kernel, Daniel Baluta,
paul.kocialkowski, niklas.soderlund+renesas, devicetree,
Aisheng Dong, ezequiel, laurent.pinchart+renesas,
dafna.hirschfeld
On 22/02/2021 20:09, Mirela Rabulea wrote:
> Hi Hans,
> appologies for my late response, please see below 2 comments.
Replies below:
>
> On Tue, 2021-01-19 at 11:31 +0100, Hans Verkuil wrote:
>> Caution: EXT Email
>>
>> On 11/01/2021 20:28, Mirela Rabulea wrote:
>>> From: Mirela Rabulea <mirela.rabulea@nxp.com>
>>>
>>> V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM
>>> application
>>> processors.
>>> The multi-planar buffers API is used.
>>>
>>> Baseline and extended sequential jpeg decoding is supported.
>>> Progressive jpeg decoding is not supported by the IP.
>>> Supports encode and decode of various formats:
>>> YUV444, YUV422, YUV420, RGB, ARGB, Gray
>>> YUV420 is the only multi-planar format supported.
>>> Minimum resolution is 64 x 64, maximum 8192 x 8192.
>>> The alignment requirements for the resolution depend on the format,
>>> multiple of 16 resolutions should work for all formats.
>>>
>>> v4l2-compliance tests are passing, including the
>>> streaming tests, "v4l2-compliance -s"
>>>
>>> Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
>>> ---
>>> Changes in v7:
>>> Add print_mxc_buf() to replace print_buf_preview() and
>>> print_nbuf_to_eoi(),
>>> and inside, use the print_hex_dump() from printk.h, also, print
>>> all the planes.
>>>
>>> drivers/media/platform/Kconfig | 2 +
>>> drivers/media/platform/Makefile | 1 +
>>> drivers/media/platform/imx-jpeg/Kconfig | 10 +
>>> drivers/media/platform/imx-jpeg/Makefile | 3 +
>>> drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c | 168 ++
>>> drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h | 140 +
>>> drivers/media/platform/imx-jpeg/mxc-jpeg.c | 2289
>>> +++++++++++++++++
>>> drivers/media/platform/imx-jpeg/mxc-jpeg.h | 184 ++
>>> 8 files changed, 2797 insertions(+)
>>> create mode 100644 drivers/media/platform/imx-jpeg/Kconfig
>>> create mode 100644 drivers/media/platform/imx-jpeg/Makefile
>>> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
>>> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
>>> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.c
>>> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.h
>>
>> One high-level comment: why introduce the driver in patch 3/9 and
>> then
>> change it again in 9/9? I would very much prefer to have just a
>> single
>> patch that adds this driver, i.e. merge patch 3 and 9 into a single
>> patch.
>
> I can squash patch 9 into patch 3, but please note that patch 9 depends
> on jpeg helper patches 6,7,8, so these patches will also have to move
> before patch 3. Let me know yout thought and I'll do this in v9, in v8
> version I only addressed the rest of your feedback and some more from
> Philipp.
Yes, just move the jpeg helper to earlier in the patch series.
>
>>
<snip>
>>> + /* fix colorspace information to sRGB for both output &
>>> capture */
>>> + pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
>>> + pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
>>> + pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
>>> + pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
>>
>> So YUV formats are expected to be full range as well? Both when
>> encoding
>> and decoding?
>
> I set the colorspace information like that based on this comment:
> /*
> * Effectively shorthand for V4L2_COLORSPACE_SRGB,
> V4L2_YCBCR_ENC_601
> * and V4L2_QUANTIZATION_FULL_RANGE. To be used for (Motion-
> )JPEG.
> */
> V4L2_COLORSPACE_JPEG = 7,
>
Inside a JPEG the YUV quantization is using full range. But when you
*decode* a JPEG the YUV quantization in the raw decoded image is
normally limited range again (the default for YUV).
It depends on what this decoder does: most will decode to limited
range YUV, some decode to full range YUV (in which case this code would be
correct), and some support both.
In the latter case you want to support the V4L2_PIX_FMT_FLAG_SET_CSC
flag:
https://hverkuil.home.xs4all.nl/spec/userspace-api/v4l/pixfmt-v4l2.html#c.v4l2_pix_format
That would allow userspace to specify the desired quantization range.
Regards,
Hans
> Also, I looked at mtk_jpeg_set_default_params for example.
> Let me know if you have a different suggestion.
>
> Thanks,
> Mirela
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [EXT] Re: [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
2021-03-04 13:03 ` Hans Verkuil
@ 2021-03-10 12:33 ` Mirela Rabulea
2021-03-10 12:40 ` Hans Verkuil
0 siblings, 1 reply; 20+ messages in thread
From: Mirela Rabulea @ 2021-03-10 12:33 UTC (permalink / raw)
To: p.zabel, mchehab, shawnguo, robh+dt, hverkuil-cisco
Cc: dl-linux-imx, linux-kernel, laurent.pinchart+renesas,
Aisheng Dong, Laurentiu Palcu, linux-media, Robert Chiras,
devicetree, paul.kocialkowski, mark.rutland,
niklas.soderlund+renesas, Daniel Baluta, dafna.hirschfeld,
ezequiel, s.hauer
Hi Hans,
On Thu, 2021-03-04 at 14:03 +0100, Hans Verkuil wrote:
> Caution: EXT Email
>
> On 22/02/2021 20:09, Mirela Rabulea wrote:
> > Hi Hans,
> > appologies for my late response, please see below 2 comments.
>
> Replies below:
>
> >
> > On Tue, 2021-01-19 at 11:31 +0100, Hans Verkuil wrote:
> > > Caution: EXT Email
> > >
> > > On 11/01/2021 20:28, Mirela Rabulea wrote:
> > > > From: Mirela Rabulea <mirela.rabulea@nxp.com>
> > > >
> > > > V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM
> > > > application
> > > > processors.
> > > > The multi-planar buffers API is used.
> > > >
> > > > Baseline and extended sequential jpeg decoding is supported.
> > > > Progressive jpeg decoding is not supported by the IP.
> > > > Supports encode and decode of various formats:
> > > > YUV444, YUV422, YUV420, RGB, ARGB, Gray
> > > > YUV420 is the only multi-planar format supported.
> > > > Minimum resolution is 64 x 64, maximum 8192 x 8192.
> > > > The alignment requirements for the resolution depend on the
> > > > format,
> > > > multiple of 16 resolutions should work for all formats.
> > > >
> > > > v4l2-compliance tests are passing, including the
> > > > streaming tests, "v4l2-compliance -s"
> > > >
> > > > Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
> > > > ---
> > > > Changes in v7:
> > > > Add print_mxc_buf() to replace print_buf_preview() and
> > > > print_nbuf_to_eoi(),
> > > > and inside, use the print_hex_dump() from printk.h, also,
> > > > print
> > > > all the planes.
> > > >
> > > > drivers/media/platform/Kconfig | 2 +
> > > > drivers/media/platform/Makefile | 1 +
> > > > drivers/media/platform/imx-jpeg/Kconfig | 10 +
> > > > drivers/media/platform/imx-jpeg/Makefile | 3 +
> > > > drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c | 168 ++
> > > > drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h | 140 +
> > > > drivers/media/platform/imx-jpeg/mxc-jpeg.c | 2289
> > > > +++++++++++++++++
> > > > drivers/media/platform/imx-jpeg/mxc-jpeg.h | 184 ++
> > > > 8 files changed, 2797 insertions(+)
> > > > create mode 100644 drivers/media/platform/imx-jpeg/Kconfig
> > > > create mode 100644 drivers/media/platform/imx-jpeg/Makefile
> > > > create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-
> > > > hw.c
> > > > create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-
> > > > hw.h
> > > > create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.c
> > > > create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.h
> > >
> > > One high-level comment: why introduce the driver in patch 3/9 and
> > > then
> > > change it again in 9/9? I would very much prefer to have just a
> > > single
> > > patch that adds this driver, i.e. merge patch 3 and 9 into a
> > > single
> > > patch.
> >
> > I can squash patch 9 into patch 3, but please note that patch 9
> > depends
> > on jpeg helper patches 6,7,8, so these patches will also have to
> > move
> > before patch 3. Let me know yout thought and I'll do this in v9, in
> > v8
> > version I only addressed the rest of your feedback and some more
> > from
> > Philipp.
>
> Yes, just move the jpeg helper to earlier in the patch series.
>
> >
> > >
>
> <snip>
>
> > > > + /* fix colorspace information to sRGB for both output &
> > > > capture */
> > > > + pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
> > > > + pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
> > > > + pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
> > > > + pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
> > >
> > > So YUV formats are expected to be full range as well? Both when
> > > encoding
> > > and decoding?
> >
> > I set the colorspace information like that based on this comment:
> > /*
> > * Effectively shorthand for V4L2_COLORSPACE_SRGB,
> > V4L2_YCBCR_ENC_601
> > * and V4L2_QUANTIZATION_FULL_RANGE. To be used for (Motion-
> > )JPEG.
> > */
> > V4L2_COLORSPACE_JPEG = 7,
> >
>
> Inside a JPEG the YUV quantization is using full range. But when you
> *decode* a JPEG the YUV quantization in the raw decoded image is
> normally limited range again (the default for YUV).
>
> It depends on what this decoder does: most will decode to limited
> range YUV, some decode to full range YUV (in which case this code
> would be
> correct), and some support both.
Experimentally, I saw the decoder outputs full-range values, but I was
not sure about limited-range support, so I asked our IP owner, and I
got this answer:
"The decoder does not alter the range of the data in any way.
It outputs the same full or limited range data that was given to the
encoder."
So, surely our encoder/decoder cannot change the range of the samples,
but it could process both full or half range.
I was thinking about a possibility to allow a half-range streams
scenario (half range raw format -> encoder -> jpeg with half range???
-> decoder -> half range raw format).
That could be achieved by allowing user to choose (specify) the
quantization for the output stream, and the driver would set the same
for the capture stream, but this would result in a JPEG with half range
for the capture stream.
So, you mentioned inside JPEG the YUV quantization is using full range,
experience confirms it (I decoded a jpeg produced with gimp and one
with ms-paint, and I saw full range values), and v4l2-compliance fails
if the pixel format is JPEG and quantization is not full.
I'm not sure if the standard allows half-range JPEG (it would be a
subset of full-range, so theoretically possible).
So, I will just add a comment to clarify the mxc-jpeg driver will
always use full-range.
The mxc-jpeg driver will not support CSC, therefor it is not setting
V4L2_FMT_FLAG_CSC_COLORSPACE in v4l2_fmtdesc during enumeration.
So, the application cannot request a specific colorspace for the
capture stream. No change needed here.
Let me know if this sounds ok, and I'll send v9 with the added coment
and the squash.
Thanks,
Mirela
>
> In the latter case you want to support the V4L2_PIX_FMT_FLAG_SET_CSC
> flag:
>
>
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [EXT] Re: [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
2021-03-10 12:33 ` Mirela Rabulea
@ 2021-03-10 12:40 ` Hans Verkuil
0 siblings, 0 replies; 20+ messages in thread
From: Hans Verkuil @ 2021-03-10 12:40 UTC (permalink / raw)
To: Mirela Rabulea, p.zabel, mchehab, shawnguo, robh+dt
Cc: dl-linux-imx, linux-kernel, laurent.pinchart+renesas,
Aisheng Dong, Laurentiu Palcu, linux-media, Robert Chiras,
devicetree, paul.kocialkowski, mark.rutland,
niklas.soderlund+renesas, Daniel Baluta, dafna.hirschfeld,
ezequiel, s.hauer
On 10/03/2021 13:33, Mirela Rabulea wrote:
> Hi Hans,
>
> On Thu, 2021-03-04 at 14:03 +0100, Hans Verkuil wrote:
>> Caution: EXT Email
>>
>> On 22/02/2021 20:09, Mirela Rabulea wrote:
>>> Hi Hans,
>>> appologies for my late response, please see below 2 comments.
>>
>> Replies below:
>>
>>>
>>> On Tue, 2021-01-19 at 11:31 +0100, Hans Verkuil wrote:
>>>> Caution: EXT Email
>>>>
>>>> On 11/01/2021 20:28, Mirela Rabulea wrote:
>>>>> From: Mirela Rabulea <mirela.rabulea@nxp.com>
>>>>>
>>>>> V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM
>>>>> application
>>>>> processors.
>>>>> The multi-planar buffers API is used.
>>>>>
>>>>> Baseline and extended sequential jpeg decoding is supported.
>>>>> Progressive jpeg decoding is not supported by the IP.
>>>>> Supports encode and decode of various formats:
>>>>> YUV444, YUV422, YUV420, RGB, ARGB, Gray
>>>>> YUV420 is the only multi-planar format supported.
>>>>> Minimum resolution is 64 x 64, maximum 8192 x 8192.
>>>>> The alignment requirements for the resolution depend on the
>>>>> format,
>>>>> multiple of 16 resolutions should work for all formats.
>>>>>
>>>>> v4l2-compliance tests are passing, including the
>>>>> streaming tests, "v4l2-compliance -s"
>>>>>
>>>>> Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
>>>>> ---
>>>>> Changes in v7:
>>>>> Add print_mxc_buf() to replace print_buf_preview() and
>>>>> print_nbuf_to_eoi(),
>>>>> and inside, use the print_hex_dump() from printk.h, also,
>>>>> print
>>>>> all the planes.
>>>>>
>>>>> drivers/media/platform/Kconfig | 2 +
>>>>> drivers/media/platform/Makefile | 1 +
>>>>> drivers/media/platform/imx-jpeg/Kconfig | 10 +
>>>>> drivers/media/platform/imx-jpeg/Makefile | 3 +
>>>>> drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c | 168 ++
>>>>> drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h | 140 +
>>>>> drivers/media/platform/imx-jpeg/mxc-jpeg.c | 2289
>>>>> +++++++++++++++++
>>>>> drivers/media/platform/imx-jpeg/mxc-jpeg.h | 184 ++
>>>>> 8 files changed, 2797 insertions(+)
>>>>> create mode 100644 drivers/media/platform/imx-jpeg/Kconfig
>>>>> create mode 100644 drivers/media/platform/imx-jpeg/Makefile
>>>>> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-
>>>>> hw.c
>>>>> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-
>>>>> hw.h
>>>>> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.c
>>>>> create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.h
>>>>
>>>> One high-level comment: why introduce the driver in patch 3/9 and
>>>> then
>>>> change it again in 9/9? I would very much prefer to have just a
>>>> single
>>>> patch that adds this driver, i.e. merge patch 3 and 9 into a
>>>> single
>>>> patch.
>>>
>>> I can squash patch 9 into patch 3, but please note that patch 9
>>> depends
>>> on jpeg helper patches 6,7,8, so these patches will also have to
>>> move
>>> before patch 3. Let me know yout thought and I'll do this in v9, in
>>> v8
>>> version I only addressed the rest of your feedback and some more
>>> from
>>> Philipp.
>>
>> Yes, just move the jpeg helper to earlier in the patch series.
>>
>>>
>>>>
>>
>> <snip>
>>
>>>>> + /* fix colorspace information to sRGB for both output &
>>>>> capture */
>>>>> + pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
>>>>> + pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
>>>>> + pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
>>>>> + pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
>>>>
>>>> So YUV formats are expected to be full range as well? Both when
>>>> encoding
>>>> and decoding?
>>>
>>> I set the colorspace information like that based on this comment:
>>> /*
>>> * Effectively shorthand for V4L2_COLORSPACE_SRGB,
>>> V4L2_YCBCR_ENC_601
>>> * and V4L2_QUANTIZATION_FULL_RANGE. To be used for (Motion-
>>> )JPEG.
>>> */
>>> V4L2_COLORSPACE_JPEG = 7,
>>>
>>
>> Inside a JPEG the YUV quantization is using full range. But when you
>> *decode* a JPEG the YUV quantization in the raw decoded image is
>> normally limited range again (the default for YUV).
>>
>> It depends on what this decoder does: most will decode to limited
>> range YUV, some decode to full range YUV (in which case this code
>> would be
>> correct), and some support both.
>
> Experimentally, I saw the decoder outputs full-range values, but I was
> not sure about limited-range support, so I asked our IP owner, and I
> got this answer:
> "The decoder does not alter the range of the data in any way.
> It outputs the same full or limited range data that was given to the
> encoder."
>
> So, surely our encoder/decoder cannot change the range of the samples,
> but it could process both full or half range.
> I was thinking about a possibility to allow a half-range streams
> scenario (half range raw format -> encoder -> jpeg with half range???
> -> decoder -> half range raw format).
> That could be achieved by allowing user to choose (specify) the
> quantization for the output stream, and the driver would set the same
> for the capture stream, but this would result in a JPEG with half range
> for the capture stream.
> So, you mentioned inside JPEG the YUV quantization is using full range,
> experience confirms it (I decoded a jpeg produced with gimp and one
> with ms-paint, and I saw full range values), and v4l2-compliance fails
> if the pixel format is JPEG and quantization is not full.
> I'm not sure if the standard allows half-range JPEG (it would be a
> subset of full-range, so theoretically possible).
>
> So, I will just add a comment to clarify the mxc-jpeg driver will
> always use full-range.
>
> The mxc-jpeg driver will not support CSC, therefor it is not setting
> V4L2_FMT_FLAG_CSC_COLORSPACE in v4l2_fmtdesc during enumeration.
> So, the application cannot request a specific colorspace for the
> capture stream. No change needed here.
>
> Let me know if this sounds ok, and I'll send v9 with the added coment
> and the squash.
Yes, just add a comment that the JPEG codec always uses full range YUV
for the uncompressed frames.
Regards,
Hans
>
> Thanks,
> Mirela
>
>>
>> In the latter case you want to support the V4L2_PIX_FMT_FLAG_SET_CSC
>> flag:
>>
>>
>
^ permalink raw reply [flat|nested] 20+ messages in thread
end of thread, other threads:[~2021-03-10 12:41 UTC | newest]
Thread overview: 20+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-11 19:28 [PATCH v7 0/9] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 1/9] media: v4l: Add packed YUV444 24bpp pixel format Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 2/9] media: dt-bindings: Add bindings for i.MX8QXP/QM JPEG driver Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 3/9] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder Mirela Rabulea
2021-01-12 0:36 ` kernel test robot
2021-01-19 10:31 ` Hans Verkuil
2021-02-22 19:09 ` [EXT] " Mirela Rabulea
2021-03-04 13:03 ` Hans Verkuil
2021-03-10 12:33 ` Mirela Rabulea
2021-03-10 12:40 ` Hans Verkuil
2021-01-20 11:07 ` kernel test robot
2021-01-20 13:52 ` kernel test robot
2021-01-11 19:28 ` [PATCH v7 4/9] arm64: dts: imx8qxp: Add jpeg encoder/decoder nodes Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 5/9] Add maintainer for IMX jpeg v4l2 driver Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 6/9] media: Add parsing for APP14 data segment in jpeg helpers Mirela Rabulea
2021-01-12 14:58 ` Philipp Zabel
2021-01-11 19:28 ` [PATCH v7 7/9] media: Quit parsing stream if doesn't start with SOI Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 8/9] media: Avoid parsing quantization and huffman tables Mirela Rabulea
2021-01-11 19:28 ` [PATCH v7 9/9] media: imx-jpeg: Use v4l2 jpeg helpers in mxc-jpeg Mirela Rabulea
2021-01-12 15:00 ` Philipp Zabel
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