[PATCH v4 07/14] drm/mediatek: add the comment about color format setting for OVL
From: CK Hu <hidden>
Date: 2018-08-09 02:37:50
Also in:
dri-devel, linux-mediatek, lkml
Hi, Stu: On Thu, 2018-08-09 at 10:15 +0800, Stu Hsieh wrote:
This patch add the comment about color format setting for OVL Signed-off-by: Stu Hsieh <redacted>
Reviewed-by: CK Hu <redacted>
quoted hunk ↗ jump to hunk
--- drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 5 +++++ 1 file changed, 5 insertions(+)diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index 978782a77629..0facd823c552 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c@@ -157,6 +157,11 @@ static void mtk_ovl_layer_off(struct mtk_ddp_comp *comp, unsigned int idx) static unsigned int ovl_fmt_convert(struct mtk_disp_ovl *ovl, unsigned int fmt) { + /* The return value in switch "MEM_MODE_INPUT_FORMAT_XXX" + * is defined in mediatek HW data sheet. + * The alphabet order in XXX is no relation to data + * arrangement in memory. + */ switch (fmt) { default: case DRM_FORMAT_RGB565: