[PATCH v6, 03/14] drm/mediatek: make sout select function format same with select input

[Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>]

there will be more sout case in the future,
make the sout function format same mtk_ddp_sel_in

Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
---
 drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
index 91c9b19..f99f89a1 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
@@ -389,17 +389,23 @@ static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur,
 	return value;
 }
 
-static void mtk_ddp_sout_sel(struct regmap *config_regs,
-			     enum mtk_ddp_comp_id cur,
-			     enum mtk_ddp_comp_id next)
+static unsigned int mtk_ddp_sout_sel(enum mtk_ddp_comp_id cur,
+				     enum mtk_ddp_comp_id next,
+				     unsigned int *addr)
 {
+	unsigned int value;
+
 	if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
-		regmap_write(config_regs, DISP_REG_CONFIG_OUT_SEL,
-				BLS_TO_DSI_RDMA1_TO_DPI1);
+		*addr = DISP_REG_CONFIG_OUT_SEL;
+		value = BLS_TO_DSI_RDMA1_TO_DPI1;
 	} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
-		regmap_write(config_regs, DISP_REG_CONFIG_OUT_SEL,
-				BLS_TO_DPI_RDMA1_TO_DSI);
+		*addr = DISP_REG_CONFIG_OUT_SEL;
+		value = BLS_TO_DPI_RDMA1_TO_DSI;
+	} else {
+		value = 0;
 	}
+
+	return value;
 }
 
 void mtk_ddp_add_comp_to_path(struct regmap *config_regs,
@@ -412,7 +418,9 @@ void mtk_ddp_add_comp_to_path(struct regmap *config_regs,
 	if (value)
 		regmap_update_bits(config_regs, addr, value, value);
 
-	mtk_ddp_sout_sel(config_regs, cur, next);
+	value = mtk_ddp_sout_sel(cur, next, &addr);
+	if (value)
+		regmap_update_bits(config_regs, addr, value, value);
 
 	value = mtk_ddp_sel_in(cur, next, &addr);
 	if (value)
-- 
1.8.1.1.dirty