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authorStu Hsieh <stu.hsieh@mediatek.com>2018-08-09 10:15:42 +0800
committerManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>2018-09-03 15:19:44 +0530
commit918dd6257b83341024f614dfe66910de06a131cd (patch)
treef05f288c9ca6ff8b473e8c61934d3a7734f13f96
parent6b5362f5f3a0117ee2be9e1d2ec7b7bcb144bdb2 (diff)
download96b-common-918dd6257b83341024f614dfe66910de06a131cd.tar.gz
drm/mediatek: add the comment about color format setting for OVL
This patch add the comment about color format setting for OVL Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com> Signed-off-by: CK Hu <ck.hu@mediatek.com>
-rw-r--r--drivers/gpu/drm/mediatek/mtk_disp_ovl.c5
1 files changed, 5 insertions, 0 deletions
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: