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Subject[PATCH v4 07/14] drm/mediatek: add the comment about color format setting for OVL
Date
This patch add the comment about color format setting for OVL

Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>
---
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:
--
2.12.5.2.gbdf23ab
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