linux-kernel - Re: [RFC 0/5] Split iMX8MQ Hantro VPU into G1 and G2 with blk-ctrl support

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Date:   Sun, 5 Dec 2021 13:51:02 -0600
From:   Adam Ford <aford173@...il.com>
To:     linux-media@...r.kernel.org
Cc:     benjamin.gaignard@...labora.com, cphealy@...il.com,
        nicolas@...fresne.ca, Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Lucas Stach <l.stach@...gutronix.de>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-staging@...ts.linux.dev
Subject: Re: [RFC 0/5] Split iMX8MQ Hantro VPU into G1 and G2 with blk-ctrl support

On Sun, Dec 5, 2021 at 12:16 PM Adam Ford <aford173@...il.com> wrote:
>
> Currently, the VPU in the i.MQ8MQ is appearing as one codec, but in reality, it's
> two IP blocks called G1 and G2.  There is initialization code in VPU code to
> pull some clocks, resets and other features which has been integrated into
> the vpu-blk-ctrl for the i.MX8M Mini and a similar method can be used to make
> the VPU codec's operate as stand-alone cores without having to know the details
> of each other or the quirks unique to the i.MX8MQ, so the remaining code can be
> left more generic.
>
> This series was started by Lucas Stach, and picked up by me so some patches have
> his s-o-b and mine where I might have changed a few minor items.  It's in an RFC state
> because the G2 VP9 operations appear to hang, but the parent code from which I started doesn't
> appear to show VP9 support, and it looks like it should.
>
> since the g-streamer and media trees are in a constant state of change, this series is based on
> git://linuxtv.org/hverkuil/media_tree.git for-v5.17e
>

I forgot to post Fluster results.

Before the patches to this branch:

2gst-main] root@...alhost:~/gstreamer/fluster# ./fluster.py list -c |grep -i v4l

    GStreamer-H.264-V4L2-Gst1.0: GStreamer H.264 V4L2 decoder for
GStreamer 1.0... ❌
    GStreamer-H.264-V4L2SL-Gst1.0: GStreamer H.264 V4L2SL decoder for
GStreamer 1.0... ✔️
    GStreamer-H.265-V4L2-Gst1.0: GStreamer H.265 V4L2 decoder for
GStreamer 1.0... ❌
    GStreamer-H.265-V4L2SL-Gst1.0: GStreamer H.265 V4L2SL decoder for
GStreamer 1.0... ❌
    GStreamer-VP8-V4L2-Gst1.0: GStreamer VP8 V4L2 decoder for GStreamer 1.0... ❌
    GStreamer-VP8-V4L2SL-Gst1.0: GStreamer VP8 V4L2SL decoder for
GStreamer 1.0... ✔️
    GStreamer-VP9-V4L2SL-Gst1.0: GStreamer VP9 V4L2SL decoder for
GStreamer 1.0... ❌
    GStreamer-AV1-V4L2SL-Gst1.0: GStreamer AV1 V4L2SL decoder for
GStreamer 1.0... ❌
[gst-main] root@...alhost:~/gstreamer/fluster#

There was no VP9 support.

./fluster.py run -dGStreamer-H.264-V4L2SL-Gst1.0
GStreamer-H.264-V4L2SL-Gst1.0
Ran 90/135 tests successfully               in 58.787 secs

AFTER this series, two decoders appear:

[   15.919137] hantro-vpu 38300000.video-codec: registered
nxp,imx8mq-vpu-g1-dec as /dev/video0
[   15.983579] hantro-vpu 38310000.video-codec: registered
nxp,imx8mq-vpu-g2-dec as /dev/video1

VP9 was listed:

    GStreamer-H.264-V4L2-Gst1.0: GStreamer H.264 V4L2 decoder for
GStreamer 1.0... ❌
    GStreamer-H.264-V4L2SL-Gst1.0: GStreamer H.264 V4L2SL decoder for
GStreamer 1.0... ✔️
    GStreamer-H.265-V4L2-Gst1.0: GStreamer H.265 V4L2 decoder for
GStreamer 1.0... ❌
    GStreamer-H.265-V4L2SL-Gst1.0: GStreamer H.265 V4L2SL decoder for
GStreamer 1.0... ❌
    GStreamer-VP8-V4L2-Gst1.0: GStreamer VP8 V4L2 decoder for GStreamer 1.0... ❌
    GStreamer-VP8-V4L2SL-Gst1.0: GStreamer VP8 V4L2SL decoder for
GStreamer 1.0... ✔️
    GStreamer-VP9-V4L2SL-Gst1.0: GStreamer VP9 V4L2SL decoder for
GStreamer 1.0... ✔️
    GStreamer-AV1-V4L2SL-Gst1.0: GStreamer AV1 V4L2SL decoder for
GStreamer 1.0... ❌

./fluster.py run -d GStreamer-VP8-V4L2SL-Gst1.0
Ran 55/61 tests successfully               in 8.565 secs


./fluster.py run -dGStreamer-H.264-V4L2SL-Gst1.0
Ran 90/135 tests successfully               in 60.269 secs

Same results for H.264

VP9 Hangs, where it didn't even appear as available before:

./fluster.py run -d GStreamer-VP9-V4L2SL-Gst1.0
****************************************************************************************************
Running test suite VP9-TEST-VECTORS with decoder GStreamer-VP9-V4L2SL-Gst1.0
Using 4 parallel job(s)
****************************************************************************************************

[TEST SUITE      ] (DECODER                    ) TEST VECTOR
                          ... RESULT
----------------------------------------------------------------------
[VP9-TEST-VECTORS] (GStreamer-VP9-V4L2SL-Gst1.0)
vp90-2-00-quantizer-00.webm                     ... Success
[VP9-TEST-VECTORS] (GStreamer-VP9-V4L2SL-Gst1.0)
vp90-2-00-quantizer-01.webm                     ... Success
[VP9-TEST-VECTORS] (GStreamer-VP9-V4L2SL-Gst1.0)
vp90-2-00-quantizer-02.webm                     ... Succes

<hang > - and yes, 'Success' didnt' finish writing to the serial port.



> Adam Ford (2):
>   media: hantro: split i.MX8MQ G1 and G2 code
>   arm64: dts: imx8mq: Split i.MX8MQ G1 and G2 with vpu-blk-ctrl
>
> Lucas Stach (3):
>   dt-bindings: power: imx8mq: add defines for VPU blk-ctrl domains
>   dt-bindings: soc: add binding for i.MX8MQ VPU blk-ctrl
>   soc: imx: imx8m-blk-ctrl: add i.MX8MQ VPU blk-ctrl
>
>  .../soc/imx/fsl,imx8mq-vpu-blk-ctrl.yaml      |  71 +++++++++++
>  arch/arm64/boot/dts/freescale/imx8mq.dtsi     |  69 ++++++----
>  drivers/soc/imx/imx8m-blk-ctrl.c              |  67 ++++++++++
>  drivers/staging/media/hantro/hantro_drv.c     |   4 +-
>  drivers/staging/media/hantro/hantro_hw.h      |   2 +-
>  drivers/staging/media/hantro/imx8m_vpu_hw.c   | 119 +++---------------
>  include/dt-bindings/power/imx8mq-power.h      |   3 +
>  7 files changed, 205 insertions(+), 130 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/soc/imx/fsl,imx8mq-vpu-blk-ctrl.yaml
>
> --
> 2.32.0
>