[PATCH v12, 1/3] soc: mediatek: Add all settings to mtk_mmsys_ddp_dpi_fmt_config func

[xinlei.lee at mediatek.com]

From: Xinlei Lee <xinlei.lee at mediatek.com>

The difference between MT8186 and other ICs is that when modifying the
output format, we need to modify the mmsys_base+0x400 register to take
effect.
So when setting the dpi output format, we need to call mmsys_func to set
it to MT8186 synchronously.
Adding mmsys all the settings that need to be modified with dpi are for
mt8186.

Fixes: a071e52f75d1 ("soc: mediatek: Add mmsys func to adapt to dpi
output for MT8186")

Signed-off-by: Xinlei Lee <xinlei.lee at mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
Reviewed-by: CK Hu <ck.hu at mediatek.com>
---
 drivers/soc/mediatek/mt8186-mmsys.h    |  8 +++++---
 drivers/soc/mediatek/mtk-mmsys.c       | 27 ++++++++++++++++++++------
 include/linux/soc/mediatek/mtk-mmsys.h |  7 +++++++
 3 files changed, 33 insertions(+), 9 deletions(-)

diff --git a/drivers/soc/mediatek/mt8186-mmsys.h b/drivers/soc/mediatek/mt8186-mmsys.h
index 09b1ccbc0093..035aec1eb616 100644
--- a/drivers/soc/mediatek/mt8186-mmsys.h
+++ b/drivers/soc/mediatek/mt8186-mmsys.h
@@ -5,9 +5,11 @@
 
 /* Values for DPI configuration in MMSYS address space */
 #define MT8186_MMSYS_DPI_OUTPUT_FORMAT		0x400
-#define DPI_FORMAT_MASK					0x1
-#define DPI_RGB888_DDR_CON				BIT(0)
-#define DPI_RGB565_SDR_CON				BIT(1)
+#define DPI_FORMAT_MASK					GENMASK(1, 0)
+#define DPI_RGB888_SDR_CON				0
+#define DPI_RGB888_DDR_CON				1
+#define DPI_RGB565_SDR_CON				2
+#define DPI_RGB565_DDR_CON				3
 
 #define MT8186_MMSYS_OVL_CON			0xF04
 #define MT8186_MMSYS_OVL0_CON_MASK			0x3
diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index d2c7a87aab87..205f6de45851 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -238,12 +238,27 @@ static void mtk_mmsys_update_bits(struct mtk_mmsys *mmsys, u32 offset, u32 mask,
 
 void mtk_mmsys_ddp_dpi_fmt_config(struct device *dev, u32 val)
 {
-	if (val)
-		mtk_mmsys_update_bits(dev_get_drvdata(dev), MT8186_MMSYS_DPI_OUTPUT_FORMAT,
-				      DPI_RGB888_DDR_CON, DPI_FORMAT_MASK);
-	else
-		mtk_mmsys_update_bits(dev_get_drvdata(dev), MT8186_MMSYS_DPI_OUTPUT_FORMAT,
-				      DPI_RGB565_SDR_CON, DPI_FORMAT_MASK);
+	struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
+
+	switch (val) {
+	case MTK_DPI_RGB888_SDR_CON:
+		mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT,
+				      DPI_FORMAT_MASK, DPI_RGB888_SDR_CON);
+		break;
+	case MTK_DPI_RGB565_SDR_CON:
+		mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT,
+				      DPI_FORMAT_MASK, DPI_RGB565_SDR_CON);
+		break;
+	case MTK_DPI_RGB565_DDR_CON:
+		mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT,
+				      DPI_FORMAT_MASK, DPI_RGB565_DDR_CON);
+		break;
+	case MTK_DPI_RGB888_DDR_CON:
+	default:
+		mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT,
+				      DPI_FORMAT_MASK, DPI_RGB888_DDR_CON);
+		break;
+	}
 }
 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_dpi_fmt_config);
 
diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h
index d2b02bb43768..b85f66db33e1 100644
--- a/include/linux/soc/mediatek/mtk-mmsys.h
+++ b/include/linux/soc/mediatek/mtk-mmsys.h
@@ -9,6 +9,13 @@
 enum mtk_ddp_comp_id;
 struct device;
 
+enum mtk_dpi_out_format_con {
+	MTK_DPI_RGB888_SDR_CON,
+	MTK_DPI_RGB888_DDR_CON,
+	MTK_DPI_RGB565_SDR_CON,
+	MTK_DPI_RGB565_DDR_CON
+};
+
 enum mtk_ddp_comp_id {
 	DDP_COMPONENT_AAL0,
 	DDP_COMPONENT_AAL1,
-- 
2.18.0