[PATCH v4 3/5] drm/mediatek: Support "Pre-multiplied" blending in OVL

[AngeloGioacchino Del Regno]

Il 17/07/24 07:24, Hsiao Chien Sung via B4 Relay ha scritto:
> From: Hsiao Chien Sung <shawn.sung at mediatek.com>
> 
> Support "Pre-multiplied" alpha blending mode on in OVL.
> Before this patch, only the "coverage" mode is supported.
> 
> As whether OVL_CON_CLRFMT_MAN bit is enabled, (3 << 12)
> means different formats in the datasheet. To prevent
> misunderstandings going forward, instead of reusing
> OVL_CON_CLRFMT_RGBA8888, we intetionally defined
> OVL_CON_CLRFMT_PARGB8888 with bit operation again.
> 
> Reviewed-by: CK Hu <ck.hu at mediatek.com>
> Signed-off-by: Hsiao Chien Sung <shawn.sung at mediatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>