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Date: Wed, 14 May 2014 22:58:48 +0530 From: Prabhakar Lad <prabhakar.csengg@...il.com> To: Hans Verkuil <hverkuil@...all.nl> Cc: LMML <linux-media@...r.kernel.org>, Hans Verkuil <hans.verkuil@...co.com>, DLOS <davinci-linux-open-source@...ux.davincidsp.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v4 1/2] media: davinci: vpif capture: upgrade the driver with v4l offerings Hi Hans, Thanks for the review. On Mon, May 12, 2014 at 3:20 PM, Hans Verkuil <hverkuil@...all.nl> wrote: > Hi Prabhakar, > > Thanks for the patch, but I have a few comments... > > On 05/12/2014 10:58 AM, Lad, Prabhakar wrote: >> From: "Lad, Prabhakar" <prabhakar.csengg@...il.com> >> >> This patch upgrades the vpif display driver with >> v4l helpers, this patch does the following, >> >> 1: initialize the vb2 queue and context at the time of probe >> and removes context at remove() callback. >> 2: uses vb2_ioctl_*() helpers. >> 3: uses vb2_fop_*() helpers. >> 4: uses SIMPLE_DEV_PM_OPS. >> 5: uses vb2_ioctl_*() helpers. >> 6: vidioc_g/s_priority is now handled by v4l core. >> 7: removed driver specific fh and now using one provided by v4l. >> 8: fixes checkpatch warnings. > > This really packs too much in one patch. At the very least 1, 4, 6 and > 8 can be done in separate patches. 2 and 5 are duplicates, BTW. The way > it is now makes this hard to review. So it would be much appreciated if > you can split it up. > Ok, I have started working on splitting them up. >> >> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com> >> --- >> >> root@...50-omapl138-evm:/usr# ./v4l2-compliance -d /dev/video0 -i -s -v >> Driver Info: >> Driver name : vpif_capture >> vpif_capture vpif_capture: ================= START STATUS ================= >> >> Bus info : platform:vpif_capture >> Drivervpif_capture vpif_capture: ================== END STATUS ================== >> version: 3.15.0 >> Capabilities : 0x84000001 >> Video Capture >> Streaming >> Device Capabilities >> Device Caps : 0x04000001 >> Video Capture >> Streaming >> >> 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 >> >> Debug ioctls: >> 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) >> 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 >> 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_QUERYCTRL/MENU: 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: >> info: found 1 formats for buftype 1 >> test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK >> fail: v4l2-test-formats.cpp(1003): cap->readbuffers > > Just set readbuffers to the minimum number of buffers that queue_setup uses. > OK. >> test VIDIOC_G/S_PARM: FAIL >> test VIDIOC_G_FBUF: OK (Not Supported) >> fail: v4l2-test-formats.cpp(405): !pix.sizeimage > > Highly dubious. You need to investigate this! > Fixed it. >> 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: >> test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK >> fail: v4l2-test-buffers.cpp(506): q.has_expbuf() > > This is weird. I'm not sure why this happens since you seem to have VB2_DMABUF set > and also vb2_ioctl_expbuf. > >> test VIDIOC_EXPBUF: FAIL >> >> Total: 38, Succeeded: 35, Failed: 3, Warnings: 0 > > Also test with 'v4l2-compliance -s' (streaming). The '-i' option is available to > test streaming from a specific input. > BTW the output is with -s option set. Thanks, --Prabhakar Lad -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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