[PATCH v1 07/21] drm/mediatek: enable OVL_LAYER_SMI_ID_EN for multi-layer usecase

[Yongqiang Niu]

enable OVL_LAYER_SMI_ID_EN for multi-layer usecase

Signed-off-by: Yongqiang Niu <yongqiang.niu at mediatek.com>
---
 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