linux-kernel - [PATCH v7 0/5] media: verisilicon: HEVC: fix 10bits handling

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Date:   Tue, 31 Jan 2023 14:03:22 +0100
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     ezequiel@...guardiasur.com.ar, p.zabel@...gutronix.de,
        mchehab@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        hverkuil-cisco@...all.nl, nicolas.dufresne@...labora.co.uk
Cc:     linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kernel@...labora.com,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v7 0/5] media: verisilicon: HEVC: fix 10bits handling

When decoding a 10bits bitstreams HEVC driver should only expose 10bits pixel formats.
To fulfill this requirement it is needed to call hantro_reset_raw_fmt()
and to only change driver internal state in case of success.

Fluster score (140/147) doesn't change after this series.

version 7:
- Remove unused ctx variable in hantro_try_ctrl().
- Change HANTRO_DEFAULT_BIT_DEPTH value to 8.
- Simplify hantro_check_depth_match logic.
- Keep ctx->bit_depth as integer value because it is use
  to compute buffers size for hevc.

version 6:
- Split the patches in multiple sub-patches.
- Rework hantro_reset_encoded_fmt() usage.

version 5:
- Add Nicolas's review tags
- Add Fixes tags

version 4:
- Split the change in 2 patches.
- Change hantro_check_depth_match() prototype to avoid using
  ctx->bit_depth
- Return the result of hantro_reset_raw_fmt() to the caller.
- Only set ctx->bit_depth when hantro_reset_raw_fmt() returns is ok.

Benjamin Gaignard (5):
  media: verisilicon: Do not set context src/dst formats in reset
    functions
  media: verisilicon: Do not use ctx fields as format storage when
    resetting
  media: verisilicon: Do not set ctx->bit_depth in hantro_try_ctrl()
  media: verisilicon: Do not change context bit depth before validating
    the format
  media: verisilicon: HEVC: Only propose 10 bits compatible pixels
    formats

 .../media/platform/verisilicon/hantro_drv.c   | 39 ++++++--
 .../platform/verisilicon/hantro_postproc.c    |  2 +-
 .../media/platform/verisilicon/hantro_v4l2.c  | 90 +++++++++----------
 .../media/platform/verisilicon/hantro_v4l2.h  |  3 +-
 .../media/platform/verisilicon/imx8m_vpu_hw.c |  2 +
 5 files changed, 78 insertions(+), 58 deletions(-)

-- 
2.34.1