Re: [RFC PATCH 0/5] fsl-viu: v4l2 compliance fixes

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On Fri March 29 2013 21:10:01 Anatolij Gustschin wrote:
> Hi Hans,
> 
> On Sat, 16 Feb 2013 11:18:22 +0100
> Hans Verkuil <hverkuil@xxxxxxxxx> wrote:
> 
> > This patch series converts fsl-viu to the control framework and provides
> > some additional v4l2 compliance fixes.
> > 
> > Anatolij, are you able to test this?
> 
> Sorry for long delay, finally managed to set up the board with recent kernel
> to test the fsl-viu driver patches.

Great! Thanks!

> 
> > Ideally I'd like to see the output of the v4l2-compliance tool (found in
> > the http://git.linuxtv.org/v4l-utils.git repository). I know that there are
> > remaining issues, especially with the fact that there can be one user at a
> > time only (very bad!) and some overlay issues. I can try to fix those, but
> > I need someone to test otherwise I won't bother.
> 
> Below is the output of the v4l2-compliance:
> 
> # v4l2-compliance -v -d 0
> Driver Info:
> 	Driver name   : viu
> 	Card type     : viu
> 	Bus info      : platform:viu
> 	Driver version: 3.9.0
> 	Capabilities  : 0x85000005
> 		Video Capture
> 		Video Overlay
> 		Read/Write
> 		Streaming
> 		Device Capabilities
> 	Device Caps   : 0x05000005
> 		Video Capture
> 		Video Overlay
> 		Read/Write
> 		Streaming
> 
> Compliance test for device /dev/video0 (not using libv4l2):
> 
> Required ioctls:
> 	test VIDIOC_QUERYCAP: OK
> 
> Allow for multiple opens:
> 	test second video open: FAIL
> 
> Debug ioctls:
> 	test VIDIOC_DBG_G_CHIP_IDENT: OK (Not Supported)
> 	test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
> 	test VIDIOC_LOG_STATUS: OK
> 
> Input ioctls:
> 	test VIDIOC_G/S_TUNER: 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)
> 		fail: v4l2-test-input-output.cpp(415): could set input to invalid input 1
> 	test VIDIOC_G/S/ENUMINPUT: FAIL
> 	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
> 
> Control ioctls:
> 		info: checking v4l2_queryctrl of control 'User Controls' (0x00980001)
> 		info: checking v4l2_queryctrl of control 'Brightness' (0x00980900)
> 		info: checking v4l2_queryctrl of control 'Contrast' (0x00980901)
> 		info: checking v4l2_queryctrl of control 'Saturation' (0x00980902)
> 		info: checking v4l2_queryctrl of control 'Hue' (0x00980903)
> 		info: checking v4l2_queryctrl of control 'Chroma AGC' (0x0098091d)
> 		info: checking v4l2_queryctrl of control 'Chroma Gain' (0x00980924)
> 		info: checking v4l2_queryctrl of control 'Brightness' (0x00980900)
> 		info: checking v4l2_queryctrl of control 'Contrast' (0x00980901)
> 		info: checking v4l2_queryctrl of control 'Saturation' (0x00980902)
> 		info: checking v4l2_queryctrl of control 'Hue' (0x00980903)
> 		info: checking v4l2_queryctrl of control 'Chroma AGC' (0x0098091d)
> 		info: checking v4l2_queryctrl of control 'Chroma Gain' (0x00980924)
> 	test VIDIOC_QUERYCTRL/MENU: OK
> 		info: checking control 'User Controls' (0x00980001)
> 		info: checking control 'Brightness' (0x00980900)
> 		info: checking control 'Contrast' (0x00980901)
> 		info: checking control 'Saturation' (0x00980902)
> 		info: checking control 'Hue' (0x00980903)
> 		info: checking control 'Chroma AGC' (0x0098091d)
> 		info: checking control 'Chroma Gain' (0x00980924)
> 	test VIDIOC_G/S_CTRL: OK
> 		info: checking extended control 'User Controls' (0x00980001)
> 		info: checking extended control 'Brightness' (0x00980900)
> 		info: checking extended control 'Contrast' (0x00980901)
> 		info: checking extended control 'Saturation' (0x00980902)
> 		info: checking extended control 'Hue' (0x00980903)
> 		info: checking extended control 'Chroma AGC' (0x0098091d)
> 		info: checking extended control 'Chroma Gain' (0x00980924)
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 		info: checking control event 'User Controls' (0x00980001)
> 		info: checking control event 'Brightness' (0x00980900)
> 		info: checking control event 'Contrast' (0x00980901)
> 		info: checking control event 'Saturation' (0x00980902)
> 		info: checking control event 'Hue' (0x00980903)
> 		info: checking control event 'Chroma AGC' (0x0098091d)
> 		info: checking control event 'Chroma Gain' (0x00980924)
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 7 Private Controls: 0
> 
> Input/Output configuration ioctls:
> 	test VIDIOC_ENUM/G/S/QUERY_STD: OK
> 	test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
> 	test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
> 
> Format ioctls:
> 		fail: v4l2-test-formats.cpp(240): fmtdesc.pixelformat not set
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: FAIL
> 	test VIDIOC_G/S_PARM: OK
> 		fail: v4l2-test-formats.cpp(339): !fmt.width || !fmt.height
> 	test VIDIOC_G_FBUF: FAIL
> 		fail: v4l2-test-formats.cpp(385): !pix.sizeimage
> 	test VIDIOC_G_FMT: FAIL
> 	test VIDIOC_TRY_FMT: OK (Not Supported)
> 	test VIDIOC_S_FMT: OK (Not Supported)
> 	test VIDIOC_G_SLICED_VBI_CAP: 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:
> 		fail: v4l2-test-buffers.cpp(84): node->node2 == NULL
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: FAIL
> 
> Total: 35, Succeeded: 29, Failed: 6, Warnings: 0

OK, that's useful.

I have updated my fsl-viu tree to hopefully solve these remaining issues.
It's in the same place, but note that I have rebased it to the latest master.

There are two phases: commit 809f0db15a2d7aa708c3afeb4e766bad7121a8d5 ('fsl-viu:
small fixes') fixes a number of trivial mistakes, the remaining patches
after that attempt to fix the driver limitation that it can have only one open
filehandle at a time, which is quite bad.

However, that's a lot more work and it may well contain bugs, so if you
encounter problems with that, then try again with only the 'small fixes'
patch.

Thanks!

	Hans
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