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Date: Mon, 5 Sep 2016 16:47:36 +0200
From: Hans Verkuil <hverkuil@...all.nl>
To: Stanimir Varbanov <stanimir.varbanov@...aro.org>,
Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Andy Gross <andy.gross@...aro.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Stephen Boyd <sboyd@...eaurora.org>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 0/8] Qualcomm video decoder/encoder driver
On 08/22/2016 03:13 PM, Stanimir Varbanov wrote:
> This patchset introduces a basic support for Qualcomm video
> acceleration hardware used for video stream decoding/encoding.
> The video IP can found on various qcom SoCs like apq8084, msm8916
> and msm8996, hence it is widly distributed but the driver is
> missing in the mainline.
>
> The v4l2 driver is something like a wrapper over Host Firmware
> Interface. The HFI itself is a set of command and message packets
> send/received through shared memory, and its purpose is to
> comunicate with the firmware which is run on remote processor.
> The Venus is the name of the video hardware IP that doing the
> video acceleration.
>
> From the software point of view the HFI interface is implemented
> in the files with prefix hfi_xxx. It acts as a translation layer
> between HFI and v4l2 layer. There is one special file in the
> driver called hfi_venus which doing most of the driver
> orchestration work. Something more it setups Venus core, run it
> and handle commands and messages from low-level point of view with
> the help of provided functions by HFI interface.
>
> I think that the driver is in good shape for mainline kernel, and
> I hope the review comments will help to improve it, so please
> do review and make comments.
I was hoping that I could finish reviewing this patch series today,
but that didn't work out.
I have more time next week, but I wonder if it isn't better if you make a
v2 first, taking my comments into account. Then I can review v2 next week.
Also test with the latest v4l2-compliance (i.e. as of today) since I improved
a few tests relating to g/s_selection and g/s_parm.
Regards,
Hans
>
> The driver depends on:
> - venus remoteproc driver posted at [1].
> - out-of-tree qcom IOMMU driver and IOMMU probe deferral support
> at [2].
>
> The driver has been tested on db410c (with apq8016 SoC) with simple
> v4l2 test applications and with gstreamer v4l2 videodec plugin,
> and v4l2 h264 out-of-tree gstreamer videoenc plugin.
>
> The output of v4l2-compliance test looks like:
>
> root@...gonboard-410c:/home/linaro# ./v4l2-compliance -d /dev/video0
> v4l2-compliance SHA : ee1ab491019f80052834d14c76bdd1c1b46f2158
>
> Driver Info:
> Driver name : vidc
> Card type : video decoder
> Bus info : platform:vidc
> Driver version: 4.8.0
> 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/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 (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_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: 7 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)
> test Cropping: OK (Not Supported)
> test Composing: OK (Not Supported)
> test Scaling: OK
>
> 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
>
> root@...gonboard-410c:/home/linaro# ./v4l2-compliance -d /dev/video1
> v4l2-compliance SHA : ee1ab491019f80052834d14c76bdd1c1b46f2158
>
> Driver Info:
> Driver name : vidc
> Card type : video encoder
> Bus info : platform:vidc
> Driver version: 4.8.0
> 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
> test for unlimited opens: 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_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: 32 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)
> test Cropping: OK
> test Composing: OK (Not Supported)
> test Scaling: OK
>
> 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
>
> regards,
> Stan
>
> [1] https://lkml.org/lkml/2016/8/19/570
> [2] https://www.spinics.net/lists/arm-kernel/msg522505.html
>
> Stanimir Varbanov (8):
> doc: DT: vidc: binding document for Qualcomm video driver
> media: vidc: adding core part and helper functions
> media: vidc: decoder: add video decoder files
> media: vidc: encoder: add video encoder files
> media: vidc: add Host Firmware Interface (HFI)
> media: vidc: add Venus HFI files
> media: vidc: add Makefiles and Kconfig files
> media: vidc: enable building of the video codec driver
>
> .../devicetree/bindings/media/qcom,vidc.txt | 61 +
> drivers/media/platform/Kconfig | 1 +
> drivers/media/platform/Makefile | 1 +
> drivers/media/platform/qcom/Kconfig | 8 +
> drivers/media/platform/qcom/Makefile | 6 +
> drivers/media/platform/qcom/vidc/Makefile | 19 +
> drivers/media/platform/qcom/vidc/core.c | 548 +++++++
> drivers/media/platform/qcom/vidc/core.h | 196 +++
> drivers/media/platform/qcom/vidc/helpers.c | 394 +++++
> drivers/media/platform/qcom/vidc/helpers.h | 43 +
> drivers/media/platform/qcom/vidc/hfi.c | 622 ++++++++
> drivers/media/platform/qcom/vidc/hfi.h | 272 ++++
> drivers/media/platform/qcom/vidc/hfi_cmds.c | 1261 ++++++++++++++++
> drivers/media/platform/qcom/vidc/hfi_cmds.h | 338 +++++
> drivers/media/platform/qcom/vidc/hfi_helper.h | 1143 +++++++++++++++
> drivers/media/platform/qcom/vidc/hfi_msgs.c | 1072 ++++++++++++++
> drivers/media/platform/qcom/vidc/hfi_msgs.h | 298 ++++
> drivers/media/platform/qcom/vidc/hfi_venus.c | 1539 ++++++++++++++++++++
> drivers/media/platform/qcom/vidc/hfi_venus.h | 25 +
> drivers/media/platform/qcom/vidc/hfi_venus_io.h | 98 ++
> drivers/media/platform/qcom/vidc/int_bufs.c | 325 +++++
> drivers/media/platform/qcom/vidc/int_bufs.h | 23 +
> drivers/media/platform/qcom/vidc/load.c | 104 ++
> drivers/media/platform/qcom/vidc/load.h | 22 +
> drivers/media/platform/qcom/vidc/mem.c | 64 +
> drivers/media/platform/qcom/vidc/mem.h | 32 +
> drivers/media/platform/qcom/vidc/resources.c | 46 +
> drivers/media/platform/qcom/vidc/resources.h | 46 +
> drivers/media/platform/qcom/vidc/vdec.c | 1100 ++++++++++++++
> drivers/media/platform/qcom/vidc/vdec.h | 27 +
> drivers/media/platform/qcom/vidc/vdec_ctrls.c | 200 +++
> drivers/media/platform/qcom/vidc/vdec_ctrls.h | 21 +
> drivers/media/platform/qcom/vidc/venc.c | 1261 ++++++++++++++++
> drivers/media/platform/qcom/vidc/venc.h | 27 +
> drivers/media/platform/qcom/vidc/venc_ctrls.c | 396 +++++
> drivers/media/platform/qcom/vidc/venc_ctrls.h | 23 +
> 36 files changed, 11662 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/qcom,vidc.txt
> create mode 100644 drivers/media/platform/qcom/Kconfig
> create mode 100644 drivers/media/platform/qcom/Makefile
> create mode 100644 drivers/media/platform/qcom/vidc/Makefile
> create mode 100644 drivers/media/platform/qcom/vidc/core.c
> create mode 100644 drivers/media/platform/qcom/vidc/core.h
> create mode 100644 drivers/media/platform/qcom/vidc/helpers.c
> create mode 100644 drivers/media/platform/qcom/vidc/helpers.h
> create mode 100644 drivers/media/platform/qcom/vidc/hfi.c
> create mode 100644 drivers/media/platform/qcom/vidc/hfi.h
> create mode 100644 drivers/media/platform/qcom/vidc/hfi_cmds.c
> create mode 100644 drivers/media/platform/qcom/vidc/hfi_cmds.h
> create mode 100644 drivers/media/platform/qcom/vidc/hfi_helper.h
> create mode 100644 drivers/media/platform/qcom/vidc/hfi_msgs.c
> create mode 100644 drivers/media/platform/qcom/vidc/hfi_msgs.h
> create mode 100644 drivers/media/platform/qcom/vidc/hfi_venus.c
> create mode 100644 drivers/media/platform/qcom/vidc/hfi_venus.h
> create mode 100644 drivers/media/platform/qcom/vidc/hfi_venus_io.h
> create mode 100644 drivers/media/platform/qcom/vidc/int_bufs.c
> create mode 100644 drivers/media/platform/qcom/vidc/int_bufs.h
> create mode 100644 drivers/media/platform/qcom/vidc/load.c
> create mode 100644 drivers/media/platform/qcom/vidc/load.h
> create mode 100644 drivers/media/platform/qcom/vidc/mem.c
> create mode 100644 drivers/media/platform/qcom/vidc/mem.h
> create mode 100644 drivers/media/platform/qcom/vidc/resources.c
> create mode 100644 drivers/media/platform/qcom/vidc/resources.h
> create mode 100644 drivers/media/platform/qcom/vidc/vdec.c
> create mode 100644 drivers/media/platform/qcom/vidc/vdec.h
> create mode 100644 drivers/media/platform/qcom/vidc/vdec_ctrls.c
> create mode 100644 drivers/media/platform/qcom/vidc/vdec_ctrls.h
> create mode 100644 drivers/media/platform/qcom/vidc/venc.c
> create mode 100644 drivers/media/platform/qcom/vidc/venc.h
> create mode 100644 drivers/media/platform/qcom/vidc/venc_ctrls.c
> create mode 100644 drivers/media/platform/qcom/vidc/venc_ctrls.h
>
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