[PATCH v6,1/3] soc: mediatek: Add mmsys func to adapt to dpi output for MT8186
From: xinlei.lee
Date: Wed Sep 14 2022 - 09:21:27 EST
From: Xinlei Lee <xinlei.lee@xxxxxxxxxxxx>
Add mmsys func to manipulate dpi output format config for MT8186.
Co-developed-by: Jitao Shi <jitao.shi@xxxxxxxxxxxx>
Signed-off-by: Jitao Shi <jitao.shi@xxxxxxxxxxxx>
Signed-off-by: Xinlei Lee <xinlei.lee@xxxxxxxxxxxx>
Reviewed-by: Nís F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
---
drivers/soc/mediatek/mt8186-mmsys.h | 6 ++++++
drivers/soc/mediatek/mtk-mmsys.c | 20 ++++++++++++++++++++
include/linux/soc/mediatek/mtk-mmsys.h | 2 ++
3 files changed, 28 insertions(+)
diff --git a/drivers/soc/mediatek/mt8186-mmsys.h b/drivers/soc/mediatek/mt8186-mmsys.h
index eb1ad9c37a9c..09b1ccbc0093 100644
--- a/drivers/soc/mediatek/mt8186-mmsys.h
+++ b/drivers/soc/mediatek/mt8186-mmsys.h
@@ -3,6 +3,12 @@
#ifndef __SOC_MEDIATEK_MT8186_MMSYS_H
#define __SOC_MEDIATEK_MT8186_MMSYS_H
+/* 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 MT8186_MMSYS_OVL_CON 0xF04
#define MT8186_MMSYS_OVL0_CON_MASK 0x3
#define MT8186_MMSYS_OVL0_2L_CON_MASK 0xC
diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index 06d8e83a2cb5..2e20b24da363 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -227,6 +227,26 @@ void mtk_mmsys_ddp_disconnect(struct device *dev,
}
EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);
+static void mtk_mmsys_update_bits(struct mtk_mmsys *mmsys, u32 offset, u32 mask, u32 val)
+{
+ u32 tmp;
+
+ tmp = readl_relaxed(mmsys->regs + offset);
+ tmp = (tmp & ~mask) | val;
+ writel_relaxed(tmp, mmsys->regs + offset);
+}
+
+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);
+}
+EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_dpi_fmt_config);
+
static int mtk_mmsys_reset_update(struct reset_controller_dev *rcdev, unsigned long id,
bool assert)
{
diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h
index 59117d970daf..d2b02bb43768 100644
--- a/include/linux/soc/mediatek/mtk-mmsys.h
+++ b/include/linux/soc/mediatek/mtk-mmsys.h
@@ -65,4 +65,6 @@ void mtk_mmsys_ddp_disconnect(struct device *dev,
enum mtk_ddp_comp_id cur,
enum mtk_ddp_comp_id next);
+void mtk_mmsys_ddp_dpi_fmt_config(struct device *dev, u32 val);
+
#endif /* __MTK_MMSYS_H */
--
2.18.0