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Subject: Re: [PATCH 0/4] Add Amlogic video decoder driver
To:     Maxime Jourdan <mjourdan@baylibre.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Kevin Hilman <khilman@baylibre.com>,
        Rob Herring <robh+dt@kernel.org>
Cc:     Hans Verkuil <hans.verkuil@cisco.com>,
        Jerome Brunet <jbrunet@baylibre.com>,
        Neil Armstrong <narmstrong@baylibre.com>,
        Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
        linux-media@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-amlogic@lists.infradead.org
References: <20180831085205.14760-1-mjourdan@baylibre.com>
From:   Hans Verkuil <hverkuil@xs4all.nl>
Message-ID: <386d4bc2-96a7-826f-392f-e54d3367e217@xs4all.nl>
Date:   Fri, 31 Aug 2018 11:00:34 +0200
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On 08/31/2018 10:52 AM, Maxime Jourdan wrote:
> Hi everyone,
> 
> This patch series adds support for the Amlogic video decoder,
> as well as the corresponding dt bindings for GXBB/GXL/GXM chips.
> 
> It features decoding for the following formats:
> - MPEG 1
> - MPEG 2
> 
> The following formats will be added in future patches:
> - MJPEG
> - MPEG 4 (incl. Xvid, H.263)
> - H.264
> - HEVC (incl. 10-bit)
> 
> The following formats' development has still not started, but they are
> supported by the hardware:
> - VC1
> - VP9
> 
> The code was made in such a way to allow easy inclusion of those formats
> in the future.
> 
> The decoder is single instance.
> 
> Files:
>  - vdec.c handles the V4L2 M2M logic
>  - esparser.c manages the hardware bitstream parser
>  - vdec_helpers.c provides helpers to DONE the dst buffers as well as
>  various common code used by the codecs
>  - vdec_1.c manages the VDEC_1 block of the vdec IP
>  - codec_mpeg12.c enables decoding for MPEG 1/2.
>  - vdec_platform.c links codec units with vdec units
>  (e.g vdec_1 with codec_mpeg12) and lists all the available
>  src/dst formats and requirements (max width/height, etc.),
>  per compatible chip.
> 
> Firmwares are necessary to run the vdec. They can currently be found at:
> https://github.com/chewitt/meson-firmware
> 
> It was tested primarily with ffmpeg's v4l2-m2m implementation. For instance:
> $ ffmpeg -c:v mpeg2_v4l2m2m -i sample_mpeg2.mkv -f null -
> 
> Note: This patch series depends on
> "[PATCH v3 0/3] soc: amlogic: add meson-canvas"
> https://patchwork.kernel.org/cover/10573763/
> 
> The v4l2-compliance results are available below the patch diff.
> 
> Maxime Jourdan (4):
>   dt-bindings: media: add Amlogic Video Decoder Bindings
>   media: meson: add v4l2 m2m video decoder driver
>   ARM64: dts: meson-gx: add vdec entry
>   ARM64: dts: meson: add vdec entries
> 
>  .../bindings/media/amlogic,vdec.txt           |  63 ++
>  arch/arm64/boot/dts/amlogic/meson-gx.dtsi     |  13 +
>  arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi   |  11 +
>  arch/arm64/boot/dts/amlogic/meson-gxl.dtsi    |  11 +
>  arch/arm64/boot/dts/amlogic/meson-gxm.dtsi    |   4 +
>  drivers/media/platform/Kconfig                |  10 +
>  drivers/media/platform/meson/Makefile         |   1 +
>  drivers/media/platform/meson/vdec/Makefile    |   8 +
>  .../media/platform/meson/vdec/codec_mpeg12.c  | 169 +++
>  .../media/platform/meson/vdec/codec_mpeg12.h  |  13 +
>  drivers/media/platform/meson/vdec/dos_regs.h  |  97 ++
>  drivers/media/platform/meson/vdec/esparser.c  | 367 +++++++
>  drivers/media/platform/meson/vdec/esparser.h  |  27 +
>  drivers/media/platform/meson/vdec/vdec.c      | 987 ++++++++++++++++++
>  drivers/media/platform/meson/vdec/vdec.h      | 233 +++++
>  drivers/media/platform/meson/vdec/vdec_1.c    | 227 ++++
>  drivers/media/platform/meson/vdec/vdec_1.h    |  13 +
>  .../media/platform/meson/vdec/vdec_helpers.c  | 353 +++++++
>  .../media/platform/meson/vdec/vdec_helpers.h  |  44 +
>  .../media/platform/meson/vdec/vdec_platform.c | 100 ++
>  .../media/platform/meson/vdec/vdec_platform.h |  29 +
>  21 files changed, 2780 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/amlogic,vdec.txt
>  create mode 100644 drivers/media/platform/meson/vdec/Makefile
>  create mode 100644 drivers/media/platform/meson/vdec/codec_mpeg12.c
>  create mode 100644 drivers/media/platform/meson/vdec/codec_mpeg12.h
>  create mode 100644 drivers/media/platform/meson/vdec/dos_regs.h
>  create mode 100644 drivers/media/platform/meson/vdec/esparser.c
>  create mode 100644 drivers/media/platform/meson/vdec/esparser.h
>  create mode 100644 drivers/media/platform/meson/vdec/vdec.c
>  create mode 100644 drivers/media/platform/meson/vdec/vdec.h
>  create mode 100644 drivers/media/platform/meson/vdec/vdec_1.c
>  create mode 100644 drivers/media/platform/meson/vdec/vdec_1.h
>  create mode 100644 drivers/media/platform/meson/vdec/vdec_helpers.c
>  create mode 100644 drivers/media/platform/meson/vdec/vdec_helpers.h
>  create mode 100644 drivers/media/platform/meson/vdec/vdec_platform.c
>  create mode 100644 drivers/media/platform/meson/vdec/vdec_platform.h
> 
> root@libretech-cc:~/v4l-utils# v4l2-compliance -d /dev/video0 
> v4l2-compliance SHA: not available, 64 bits

I see that there is no SHA, so you probably didn't compile this from a
checked-out git repo. Please do so, since without a SHA I don't know
whether or not you used the latest v4l2-compliance version.

Regards,

	Hans

> 
> Compliance test for device /dev/video0:
> 
> Driver Info:
> 	Driver name      : meson-vdec
> 	Card type        : Amlogic Video Decoder
> 	Bus info         : platform:meson-vdec
> 	Driver version   : 4.18.0
> 	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
> 
> Required ioctls:
> 	test VIDIOC_QUERYCAP: OK
> 
> Allow for multiple opens:
> 	test second /dev/video0 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 (Not Supported)
> 	test VIDIOC_QUERYCTRL: 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:
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> 	test VIDIOC_G/S_PARM: OK (Not Supported)
> 	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
> 
> Buffer ioctls:
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> 	test VIDIOC_EXPBUF: OK
> 
> Total: 43, Succeeded: 43, Failed: 0, Warnings: 0
>