enable OVL_LAYER_SMI_ID_EN for multi-layer usecase
Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
---
drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
index 8cf9f3b..427fe7f 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
@@ -23,6 +23,7 @@
#define DISP_REG_OVL_RST 0x0014
#define DISP_REG_OVL_ROI_SIZE 0x0020
#define DISP_REG_OVL_DATAPATH_CON 0x0024
+#define OVL_LAYER_SMI_ID_EN BIT(0)
#define OVL_BGCLR_SEL_IN BIT(2)
#define DISP_REG_OVL_ROI_BGCLR 0x0028
#define DISP_REG_OVL_SRC_CON 0x002c
@@ -116,6 +117,8 @@ static void mtk_ovl_disable_vblank(struct mtk_ddp_comp *comp)
static void mtk_ovl_start(struct mtk_ddp_comp *comp)
{
writel_relaxed(0x1, comp->regs + DISP_REG_OVL_EN);
+ mtk_ddp_write_mask(NULL, OVL_LAYER_SMI_ID_EN, comp,
+ DISP_REG_OVL_DATAPATH_CON, OVL_LAYER_SMI_ID_EN);
}
static void mtk_ovl_stop(struct mtk_ddp_comp *comp)
--
1.8.1.1.dirty
