[PATCH v6 0/9] Renesas Capture Engine Unit (CEU) V4L2 driver

Jacopo Mondi
2018-01-16T21:45:33Z

Hello,
new version of CEU after Hans' review.

Added his Acked-by to most patches and closed review comments.
Running v4l2-compliance, I noticed a new failure introduced by the way I now
calculate the plane sizes in set/try_fmt.

This is the function used to update per-plane bytesperline and sizeimage:

static void ceu_update_plane_sizes(struct v4l2_plane_pix_format *plane,
unsigned int bpl, unsigned int szimage)
{
if (plane->bytesperline < bpl)
plane->bytesperline = bpl;
if (plane->sizeimage < szimage)
plane->sizeimage = szimage;
}

I'm seeing a failure as v4l2-compliance requires buffers with both bytesperline
and sizeimage set to MAX_INT . Hans, is this expected from v4l2-compliance?
How should I handle this, if that has to be handled by the single drivers?

Apart from that, here it is the output of v4l2-compliance, with the last tests
failing due to the above stated reason, and two errors in try/set format due to
the fact the driver is not setting ycbcr encoding after it receives an invalid
format. I would set those, but I'm not sure what it the correct value and not
all mainline drivers do that.

-------------------------------------------------------------------------------
v4l2-compliance SHA : 1d3c611dee82090d9456730e24af368b51dcb4a9

Driver Info:
Driver name : renesas-ceu
Card type : Renesas CEU e8210000.ceu
Bus info : platform:renesas-ceu-e8210000.c
Driver version: 4.14.0
Capabilities : 0x84201000
Video Capture Multiplanar
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x04201000
Video Capture Multiplanar
Streaming
Extended Pix Format

Compliance test for device /dev/video0 (not using libv4l2):

Required ioctls:
test VIDIOC_QUERYCAP: OK

Allow for multiple opens:
test second video open: OK
test VIDIOC_QUERYCAP: OK
test VIDIOC_G/S_PRIORITY: OK
test for unlimited opens: OK

Debug ioctls:
test VIDIOC_DBG_G/S_REGISTER: OK
test VIDIOC_LOG_STATUS: OK (Not Supported)

Input ioctls:
test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
test VIDIOC_ENUMAUDIO: OK (Not Supported)
test VIDIOC_G/S/ENUMINPUT: OK
test VIDIOC_G/S_AUDIO: OK (Not Supported)
Inputs: 1 Audio Inputs: 0 Tuners: 0

Output ioctls:
test VIDIOC_G/S_MODULATOR: OK (Not Supported)
test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
test VIDIOC_ENUMAUDOUT: OK (Not Supported)
test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
test VIDIOC_G/S_AUDOUT: OK (Not Supported)
Outputs: 0 Audio Outputs: 0 Modulators: 0

Input/Output configuration ioctls:
test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
test VIDIOC_G/S_EDID: OK (Not Supported)

Test input 0:

Control ioctls:
test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
test VIDIOC_QUERYCTRL: OK
test VIDIOC_G/S_CTRL: OK
test VIDIOC_G/S/TRY_EXT_CTRLS: OK
fail: v4l2-test-controls.cpp(782): subscribe event for control 'User Controls' failed
test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: FAIL
test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
Standard Controls: 12 Private Controls: 0

Format ioctls:
test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
fail: v4l2-test-formats.cpp(1162): ret && node->has_frmintervals
test VIDIOC_G/S_PARM: FAIL
test VIDIOC_G_FBUF: OK (Not Supported)
test VIDIOC_G_FMT: OK
fail: v4l2-test-formats.cpp(335): ycbcr_enc >= 0xff
fail: v4l2-test-formats.cpp(451): testColorspace(pix_mp.pixelformat, pix_mp.colorspace, pix_mp.ycbcr_enc, pix_mp.quantization)
fail: v4l2-test-formats.cpp(736): Video Capture Multiplanar is valid, but TRY_FMT failed to return a format
test VIDIOC_TRY_FMT: FAIL
fail: v4l2-test-formats.cpp(335): ycbcr_enc >= 0xff
fail: v4l2-test-formats.cpp(451): testColorspace(pix_mp.pixelformat, pix_mp.colorspace, pix_mp.ycbcr_enc, pix_mp.quantization)
fail: v4l2-test-formats.cpp(996): Video Capture Multiplanar is valid, but no S_FMT was implemented
test VIDIOC_S_FMT: FAIL
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 (Not Supported)
test VIDIOC_G_ENC_INDEX: OK (Not Supported)
test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)

Buffer ioctls:
test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
test VIDIOC_EXPBUF: OK

Test input 0:

Total: 43, Succeeded: 39, Failed: 4, Warnings: 0
-------------------------------------------------------------------------------

Thanks
j

v5->v6:
- Add Hans' Acked-by to most patches
- Fix a bad change in ov772x get_selection
- Add .buf_prepare callack to CEU and verify plane sizes there
- Remove VB2_USERPTR from supported io_modes in CEU driver
- Remove read() fops in CEU driver

v4->v5:
- Added Rob's and Laurent's Reviewed-by tag to DT bindings
- Change CEU driver module license to "GPL v2" to match SPDX identifier as
suggested by Philippe Ombredanne
- Make struct ceu_data static as suggested by Laurent and add his
Reviewed-by to CEU driver.

v3->v4:
- Drop generic fallback compatible string "renesas,ceu"
- Addressed Laurent's comments on [3/9]
- Fix error messages on irq get/request
- Do not leak ceudev if irq_get fails
- Make irq_mask a const field

v2->v3:
- Improved DT bindings removing standard properties (pinctrl- ones and
remote-endpoint) not specific to this driver and improved description of
compatible strings
- Remove ov772x's xlkc_rate property and set clock rate in Migo-R board file
- Made 'xclk' clock private to ov772x driver in Migo-R board file
- Change 'rstb' GPIO active output level and changed ov772x and tw9910 drivers
accordingly as suggested by Fabio
- Minor changes in CEU driver to address Laurent's comments
- Moved Migo-R setup patch to the end of the series to silence 0-day bot
- Renamed tw9910 clock to 'xti' as per video decoder manual
- Changed all SPDX identifiers to GPL-2.0 from previous GPL-2.0+

v1->v2:
- DT
-- Addressed Geert's comments and added clocks for CEU to mstp6 clock source
-- Specified supported generic video iterfaces properties in dt-bindings and
simplified example

- CEU driver
-- Re-worked interrupt handler, interrupt management, reset(*) and capture
start operation
-- Re-worked querycap/enum_input/enum_frameintervals to fix some
v4l2_compliance failures
-- Removed soc_camera legacy operations g/s_mbus_format
-- Update to new notifier implementation
-- Fixed several comments from Hans, Laurent and Sakari

- Migo-R
-- Register clocks and gpios for sensor drivers in Migo-R setup
-- Updated sensors (tw9910 and ov772x) drivers headers and drivers to close
remarks from Hans and Laurent:
--- Removed platform callbacks and handle clocks and gpios from sensor drivers
--- Remove g/s_mbus_config operations

Jacopo Mondi (9):
dt-bindings: media: Add Renesas CEU bindings
include: media: Add Renesas CEU driver interface
v4l: platform: Add Renesas CEU driver
ARM: dts: r7s72100: Add Capture Engine Unit (CEU)
v4l: i2c: Copy ov772x soc_camera sensor driver
media: i2c: ov772x: Remove soc_camera dependencies
v4l: i2c: Copy tw9910 soc_camera sensor driver
media: i2c: tw9910: Remove soc_camera dependencies
arch: sh: migor: Use new renesas-ceu camera driver

.../devicetree/bindings/media/renesas,ceu.txt | 81 +
arch/arm/boot/dts/r7s72100.dtsi | 15 +-
arch/sh/boards/mach-migor/setup.c | 225 ++-
arch/sh/kernel/cpu/sh4a/clock-sh7722.c | 2 +-
drivers/media/i2c/Kconfig | 20 +
drivers/media/i2c/Makefile | 2 +
drivers/media/i2c/ov772x.c | 1183 ++++++++++++++
drivers/media/i2c/tw9910.c | 1039 ++++++++++++
drivers/media/platform/Kconfig | 9 +
drivers/media/platform/Makefile | 1 +
drivers/media/platform/renesas-ceu.c | 1659 ++++++++++++++++++++
include/media/drv-intf/renesas-ceu.h | 26 +
include/media/i2c/ov772x.h | 6 +-
include/media/i2c/tw9910.h | 9 +
14 files changed, 4146 insertions(+), 131 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/renesas,ceu.txt
create mode 100644 drivers/media/i2c/ov772x.c
create mode 100644 drivers/media/i2c/tw9910.c
create mode 100644 drivers/media/platform/renesas-ceu.c
create mode 100644 include/media/drv-intf/renesas-ceu.h

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2.7.4