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From:   <xinlei.lee@mediatek.com>
To:     <matthias.bgg@gmail.com>, <jason-jh.lin@mediatek.com>,
        <angelogioacchino.delregno@collabora.com>,
        <rex-bc.chen@mediatek.com>, <ck.hu@mediatek.com>,
        <p.zabel@pengutronix.de>, <airlied@linux.ie>, <daniel@ffwll.ch>
CC:     <dri-devel@lists.freedesktop.org>,
        <linux-mediatek@lists.infradead.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>,
        <Project_Global_Chrome_Upstream_Group@mediatek.com>,
        <jitao.shi@mediatek.com>, Xinlei Lee <xinlei.lee@mediatek.com>
Subject: [PATCH v8,1/3] soc: mediatek: Add all settings to mtk_mmsys_ddp_dpi_fmt_config func
Date:   Thu, 22 Sep 2022 20:45:00 +0800
Message-ID: <1663850702-26529-2-git-send-email-xinlei.lee@mediatek.com>
In-Reply-To: <1663850702-26529-1-git-send-email-xinlei.lee@mediatek.com>
References: <1663850702-26529-1-git-send-email-xinlei.lee@mediatek.com>
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From: Xinlei Lee <xinlei.lee@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@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 2e20b24da363..952e636b282e 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