linux-kernel - Re: [PATCH v2] drm/mediatek: ovl: Add fmt_support

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Message-ID: <63ca91a9-f2f4-483e-b7bf-11febcd49f1d@gmail.com>
Date: Mon, 16 Sep 2024 19:25:56 +0300
From: Alper Nebi Yasak <alpernebiyasak@...il.com>
To: "Jason-JH.Lin" <jason-jh.lin@...iatek.com>,
 Chun-Kuang Hu <chunkuang.hu@...nel.org>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Shawn Sung <shawn.sung@...iatek.com>, dri-devel@...ts.freedesktop.org,
 linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, Singo Chang
 <singo.chang@...iatek.com>, Nancy Lin <nancy.lin@...iatek.com>,
 Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v2] drm/mediatek: ovl: Add fmt_support_man for MT8192 and
 MT8195

Hi,

On 2024-09-15 19:12 +03:00, Jason-JH.Lin wrote:
> OVL_CON_CLRFMT_MAN is an configuration for extending color format
> settings of DISP_REG_OVL_CON(n).
> It will change some of the original color format settings.
> 
> Take the settings of (3 << 12) for example.
> - If OVL_CON_CLRFMT_MAN = 0 means OVL_CON_CLRFMT_RGBA8888.
> - If OVL_CON_CLRFMT_MAN = 1 means OVL_CON_CLRFMT_PARGB8888.
> 
> Since OVL_CON_CLRFMT_MAN is not supported on previous SoCs,
> It breaks the OVL color format setting of MT8173.
> So add fmt_support_man to the driver data of MT8192 and MT8195
> to solve the downgrade problem.
> 
> Fixes: a3f7f7ef4bfe ("drm/mediatek: Support "Pre-multiplied" blending in OVL")
> Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 43 ++++++++++++++++++++-----
>  1 file changed, 35 insertions(+), 8 deletions(-)

Tested-by: Alper Nebi Yasak <alpernebiyasak@...il.com>

Thanks!