linux-kernel - Re: [PATCH v6 00/11] MediaTek DDP GAMMA

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Message-ID: <33affcd4-3fb3-e293-7ff8-3b15132fd8d8@collabora.com>
Date:   Wed, 14 Jun 2023 10:29:21 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     chunkuang.hu@...nel.org
Cc:     p.zabel@...gutronix.de, airlied@...il.com, daniel@...ll.ch,
        matthias.bgg@...il.com, dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, wenst@...omium.org,
        kernel@...labora.com
Subject: Re: [PATCH v6 00/11] MediaTek DDP GAMMA - 12-bit LUT support

Il 12/06/23 11:01, AngeloGioacchino Del Regno ha scritto:
> Changes in v6:
>   - Fixed smatch warning in patch 11/11, ref.:
>     https://lore.kernel.org/all/202306101458.lRXHEE0Z-lkp@intel.com/
> 

This series is fully ready. CK, can we get this one and the mtk-dp series [1]
in -next for this cycle please?

Those are the last pieces that would allow enabling display on MT8195 Chromebooks.

[1]: 
https://lore.kernel.org/lkml/20230404104800.301150-1-angelogioacchino.delregno@collabora.com/

Thanks,
Angelo

> Changes in v5:
>   - Removed incorrect comment on default LUT size and bits
>   - Removed useless check for num_lut_banks
>   - Added comment about CMDQ implementation on patch 5
>   - Evaluated passing lut size/bits from AAL, idea discarded as
>     the implementation would be rather tricky while bringing no
>     benefits.
> 
> Changes in v4:
>   - Fixed assignment typo appeared in v3
> 
> Changes in v3:
>   - Fixed issues due to variables renaming during cleanup (oops)
>   - This is actually the right series, since v2 was taken from the
>     wrong kernel tree.... :-)
> 
> Changes in v2:
>   - Added explicit inclusion of linux/bitfield.h in patch [06/11]
> 
> This series adds support for GAMMA IP requiring and/or supporting
> a 12-bits LUT using a slightly different register layout and programming
> sequence for multiple LUT banks: this IP version is currently found
> on a number of SoCs, not only including the Chromebook/IoT oriented
> Kompanio 1200/1380 MT8195/MT8195T, but also Smartphone chips such as
> the Dimensity 9200 (MT6985) and others.
> 
> This series was tested on MT8195, MT8192, MT8173, MT6795:
>   * MT6795, MT8192, MT8173: No regression, works fine.
>   * MT8195: Color correction is finally working!
> 
> AngeloGioacchino Del Regno (10):
>    drm/mediatek: gamma: Reduce indentation in mtk_gamma_set_common()
>    drm/mediatek: gamma: Support SoC specific LUT size
>    drm/mediatek: gamma: Improve and simplify HW LUT calculation
>    drm/mediatek: gamma: Enable the Gamma LUT table only after programming
>    drm/mediatek: gamma: Use bitfield macros
>    drm/mediatek: gamma: Support specifying number of bits per LUT
>      component
>    drm/mediatek: gamma: Support multi-bank gamma LUT
>    drm/mediatek: gamma: Add support for 12-bit LUT and MT8195
>    drm/mediatek: gamma: Make sure relay mode is disabled
>    drm/mediatek: gamma: Program gamma LUT type for descending or rising
> 
> Jason-JH.Lin (1):
>    drm/mediatek: gamma: Adjust mtk_drm_gamma_set_common parameters
> 
>   drivers/gpu/drm/mediatek/mtk_disp_aal.c     |   2 +-
>   drivers/gpu/drm/mediatek/mtk_disp_drv.h     |   3 +-
>   drivers/gpu/drm/mediatek/mtk_disp_gamma.c   | 193 ++++++++++++++++----
>   drivers/gpu/drm/mediatek/mtk_drm_crtc.c     |   4 +-
>   drivers/gpu/drm/mediatek/mtk_drm_crtc.h     |   1 -
>   drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c |   1 +
>   drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h |   9 +
>   7 files changed, 177 insertions(+), 36 deletions(-)
>