[PATCH v8 15/22] drm/mediatek: add display merge mute/unmute support for MT8195

[Nancy.Lin]

Add merge mute/unmute setting for MT8195.
MT8195 Vdosys1 merge1~merge4 support HW mute function.

Signed-off-by: Nancy.Lin <nancy.lin at mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu at kernel.org>
---
 drivers/gpu/drm/mediatek/mtk_disp_merge.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
index 92c81ce24a49..dff2797a2f68 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_merge.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
@@ -58,12 +58,15 @@
 #define FLD_PREULTRA_TH_LOW			GENMASK(15, 0)
 #define FLD_PREULTRA_TH_HIGH			GENMASK(31, 16)
 
+#define DISP_REG_MERGE_MUTE_0		0xf00
+
 struct mtk_disp_merge {
-	void __iomem *regs;
-	struct clk *clk;
-	struct clk *async_clk;
-	struct cmdq_client_reg		cmdq_reg;
-	bool				fifo_en;
+	void __iomem		*regs;
+	struct clk		*clk;
+	struct clk		*async_clk;
+	struct cmdq_client_reg	cmdq_reg;
+	bool			fifo_en;
+	bool			mute_support;
 };
 
 void mtk_merge_start(struct device *dev)
@@ -82,6 +85,10 @@ void mtk_merge_start_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt)
 {
 	struct mtk_disp_merge *priv = dev_get_drvdata(dev);
 
+	if (priv->mute_support)
+		mtk_ddp_write(cmdq_pkt, 0x0, &priv->cmdq_reg, priv->regs,
+			      DISP_REG_MERGE_MUTE_0);
+
 	mtk_ddp_write(cmdq_pkt, 1, &priv->cmdq_reg, priv->regs,
 		      DISP_REG_MERGE_CTRL);
 }
@@ -90,6 +97,10 @@ void mtk_merge_stop_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt)
 {
 	struct mtk_disp_merge *priv = dev_get_drvdata(dev);
 
+	if (priv->mute_support)
+		mtk_ddp_write(cmdq_pkt, 0x1, &priv->cmdq_reg, priv->regs,
+			      DISP_REG_MERGE_MUTE_0);
+
 	mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs,
 		      DISP_REG_MERGE_CTRL);
 }
@@ -264,6 +275,8 @@ static int mtk_disp_merge_probe(struct platform_device *pdev)
 	priv->fifo_en = of_property_read_bool(dev->of_node,
 					      "mediatek,merge-fifo-en");
 
+	priv->mute_support = of_property_read_bool(dev->of_node,
+						   "mediatek,merge-mute");
 	platform_set_drvdata(pdev, priv);
 
 	ret = component_add(dev, &mtk_disp_merge_component_ops);
-- 
2.18.0