[PATCH v7 00/11] Renesas Capture Engine Unit (CEU) V4L2 driver

[Jacopo Mondi <jacopo+renesas@jmondi.org>]

Hello,
  7th round for CEU driver&friends.

This series includes 2 new patches compared to v6 and it is now based on
top of Hans' series:
[PATCHv2 0/9] media: replace g/s_parm by g/s_frame_interval
and makes use of newly introduced v4l2_g/s_parm_cap() functions from v4l2-common
in CEU's g/s_parm() callbacks.

A branch for testing is available at:
git://jmondi.org/linux ceu/media-tree-parm/base
with few patches for Migo-R and GR-Peach applied on top of Hans' media-tree/parm
branch.

The 2 new patches in the series:
[11/11] has been added to silence a v4l2-compliance error, and modifies
ov7670 driver to set all fields of 'struct v4l2_mbus_format' during set_format
operation, including ycbcr_enc, quantization and xfer_func. As the patch commit
reports, this suppresses the following v4l2-compliance error:
fail: v4l2-test-formats.cpp(335): ycbcr_enc >= 0xff

[7/11] has been required by Hans to add frame interval handling to ov772x
driver. As this is quite a big change I kept it in a separate patch to ease
review, it can eventually be squashed on [6/11] if accepted.

If for TW9910 video decoder the same is required (frame interval handling) I'm
in favour of moving that driver to staging as it was proposed for ov772x before
this series.

v4l2-compliance now reports a 0 error count:
Total: 43, Succeeded: 43, Failed: 0, Warnings: 0

Hans, you asked me to run v4l2-compliance with the -f option, I cannot do
that on my tiny GR-Peach as with its limited available system memory it cannot
allocate the number of requested buffers for that test. I can try to tweak that
if necessary. I won't stress here why I cannot do that on Migo-R, long story
short, I need a special compiler with DSP support to run anything but the little
initramfs I have received for SH7722. I've been able to tweak yavta to work and
test capture and frame rate handling with it, but v4l2-compliance is much more
complex and I don't think I'll be able run it on that platform.

Below, v4l2-compliance output:

-------------------------------------------------------------------------------
v4l2-compliance SHA   : 20b6624f4bb84353e690d897688fd7ac12d6a881

Driver Info:
	Driver name   : renesas-ceu
	Card type     : Renesas CEU e8210000.ceu
	Bus info      : platform:renesas-ceu-e8210000.c
	Driver version: 4.15.0
	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
		test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
		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: OK
		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 (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: 43, Failed: 0, Warnings: 0
-------------------------------------------------------------------------------

Thanks
   j

v6->v7:
- Add patch to handle ycbr_enc and other fields of v4l2_mbus_format for ov7670
- Add patch to handle frame interval for ov772x
- Rebased on Hans' media-tree/parm branch with v4l2_g/s_parm_cap
- Drop const modifier in CEU releated fields of Migo-R setup.c board file
  to silence complier warnings.

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 (11):
  dt-bindings: media: Add Renesas CEU bindings
  include: media: Add Renesas CEU driver interface
  media: platform: Add Renesas CEU driver
  ARM: dts: r7s72100: Add Capture Engine Unit (CEU)
  media: i2c: Copy ov772x soc_camera sensor driver
  media: i2c: ov772x: Remove soc_camera dependencies
  media: i2c: ov772x: Support frame interval handling
  media: i2c: Copy tw9910 soc_camera sensor driver
  media: i2c: tw9910: Remove soc_camera dependencies
  arch: sh: migor: Use new renesas-ceu camera driver
  media: i2c: ov7670: Fully set mbus frame fmt

 .../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/ov7670.c                         |    4 +
 drivers/media/i2c/ov772x.c                         | 1488 ++++++++++++++++++
 drivers/media/i2c/tw9910.c                         | 1039 ++++++++++++
 drivers/media/platform/Kconfig                     |    9 +
 drivers/media/platform/Makefile                    |    1 +
 drivers/media/platform/renesas-ceu.c               | 1661 ++++++++++++++++++++
 include/media/drv-intf/renesas-ceu.h               |   26 +
 include/media/i2c/ov772x.h                         |    6 +-
 include/media/i2c/tw9910.h                         |    9 +
 15 files changed, 4457 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

--
2.7.4