Re: [PATCH v5 0/8] Add MT8173 Video Encoder Driver and VPU Driver

[tiffany lin <tiffany.lin@mediatek.com>]

On Wed, 2016-02-24 at 09:30 +0100, Hans Verkuil wrote:
> Hi Tiffany,
> 
> On 02/24/16 09:23, tiffany lin wrote:
> > Hi Hans,
> > 
> > On Tue, 2016-02-23 at 09:47 +0100, Hans Verkuil wrote:
> >> On 02/23/16 09:11, Tiffany Lin wrote:
> >>> ==============
> >>>  Introduction
> >>> ==============
> >>>
> >>> The purpose of this series is to add the driver for video codec hw embedded in the Mediatek's MT8173 SoCs.
> >>> Mediatek Video Codec is able to handle video encoding of in a range of formats.
> >>>
> >>> This patch series also include VPU driver. Mediatek Video Codec driver rely on VPU driver to load,
> >>> communicate with VPU.
> >>>
> >>> Internally the driver uses videobuf2 framework and MTK IOMMU and MTK SMI.
> >>> MTK IOMMU[1] and MTK SMI[2] have not yet been merged, but we wanted to start discussion about the driver
> >>> earlier so it could be merged sooner.
> >>>
> >>> [1]https://patchwork.kernel.org/patch/8335461/
> >>> [2]https://patchwork.kernel.org/patch/7596181/
> >>
> >> <snip>
> >>
> >>> v4l2-compliance test output:
> >>> localhost ~ # /usr/bin/v4l2-compliance -d /dev/video1
> >>> Driver Info:
> >>>         Driver name   : mtk-vcodec-enc
> >>>         Card type     : platform:mt8173
> >>>         Bus info      : platform:mt8173
> >>>         Driver version: 4.4.0
> >>>         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
> >>>
> >>> Compliance test for device /dev/video1 (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 (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_QUERYCTRL/MENU: 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
> >>>                 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)
> >>>
> >>>         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
> >>>
> >>> Total: 38, Succeeded: 38, Failed: 0, Warnings: 0
> >>
> >> Nice!
> >>
> >> Can you try 'v4l2-compliance -s'? Note that this may not work since I know
> >> that v4l2-compliance doesn't work all that well with codecs, but I am
> >> curious what the output is when you try streaming.
> >>
> >> Don't bother trying to chase down reported failures, those are likely from
> >> v4l2-compliance itself. It is something I would like to improve, but -ENOTIME.
> >>
> > 
> > When I try to run 'v4l2-compliance -d /dev/video1 -s, I got follow
> > output.
> > I use v4.4-rc5 kernel and v4l-utils 1.6 version.
> 
> Can you compile v4l2-compliance straight from the v4l-utils.git master branch?
> Version 1.6 is too old, and for proper compliance testing you should always use
> the master branch. It probably won't matter for this -s test, but for the
> regular test (without -s) it does make a difference.
> 
> If nothing else, using the master branch will make it easier for me to match up
> the line numbers that v4l2-compliance reports to the actual source.
> 

Sorry, our development branch default get
"http://linuxtv.org/downloads/v4l-utils/v4l-utils-1.6.0.tar.bz2"
I try to change to use master branch.
I got following output:


Streaming ioctls:
        test read/write: OK (Not Supported)
                fail: v4l2-test-buffers.cpp(970): ret != EINVAL
        test MMAP: FAIL
                warn: v4l2-test-buffers.cpp(278): buf.length=1,
vp->length=1024, ff9a42a8/ff9a4270, ff9a4284/ff9a429c/ff9a42a4
fail: v4l2-test-buffers.cpp(1032): ret && ret != ENOTTY
                fail: v4l2-test-buffers.cpp(1098): setupUserPtr(node, q)
        test USERPTR: FAIL
        test DMABUF: Cannot test, specify --expbuf-device


After change to use master branch, VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF:
test FAIL.

I got this error output, do I need to fix this issue. I need to figure
out this.

                warn: v4l2-test-buffers.cpp(467): mmap_valid 1
warn: v4l2-test-buffers.cpp(278): buf.length=1, vp->length=1024,
ff9a40b8/ff9a4080, ff9a4094/ff9a40ac/ff9a40b4          warn:
v4l2-test-buffers.cpp(475): mmap_valid 2          warn:
v4l2-test-buffers.cpp(480): userptr_valid 1          warn:
v4l2-test-buffers.cpp(278): buf.length=1, vp->length=1024,
ff9a40b8/ff9a4080, ff9a4094/ff9a40ac/ff9a40b4          warn:
v4l2-test-buffers.cpp(488): userptr_valid 2               warn:
v4l2-test-buffers.cpp(493): dmabuf_valid  1          warn:
v4l2-test-buffers.cpp(278): buf.length=1, vp->length=1024,
ff9a40b8/ff9a4080, ff9a4094/ff9a40ac/ff9a40b4          warn:
v4l2-test-buffers.cpp(501): dmabuf_valid  2               warn:
v4l2-test-buffers.cpp(278): buf.length=1, vp->length=1024,
ff9a40b8/ff9a4080, ff9a4094/ff9a40ac/ff9a40b4             warn:
v4l2-test-buffers.cpp(278): buf.length=1, vp->length=1024,
ff9a40b8/ff9a4080, ff9a4094/ff9a40ac/ff9a40b4          warn:
v4l2-test-buffers.cpp(278): buf.length=1, vp->length=1024,
ff9a40b8/ff9a4080, ff9a4094/ff9a40ac/ff9a40b4             fail:
v4l2-test-buffers.cpp(564): check_0(crbufs.reserved,
sizeof(crbufs.reserved))
                test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: FAIL
                warn: v4l2-test-buffers.cpp(597): ....2         warn:
v4l2-test-buffers.cpp(597): ....2         test VIDIOC_EXPBUF: OK


best regards,
Tiffany


> Thanks!
> 
> 	Hans
> 
> > 
> > Streaming ioctls:
> >         test read/write: OK (Not Supported)
> > fail: ../../../v4l-utils-1.6.0/utils/v4l2-compliance/v4l2-test-buffers.cpp(332): buf.querybuf(node, i) fail: ../../../v4l-utils-1.6.0/utils/v4l2-compliance/v4l2-test-buffers.cpp(868): testQueryBuf(node, cur_fmt.type, q.g_buffers())
> >         test MMAP: FAIL
> > fail: ../../../v4l-utils-1.6.0/utils/v4l2-compliance/v4l2-test-buffers.cpp(923): ret && ret != ENOTTY
> > 
> > fail: ../../../v4l-utils-1.6.0/utils/v4l2-compliance/v4l2-test-buffers.cpp(988): setupUserPtr(node, q)
> >         test USERPTR: FAIL
> >         test DMABUF: Cannot test, specify --expbuf-device
> > 
> > best regards,
> > Tiffany
> > 
> >> Regards,
> >>
> >> 	Hans
> > 
> > 
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