drm/mediatek: move hardware register to node data

The address of register DPI_H_FRE_CON is different in different IC.
Using of_node data to find this address.

Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

2 files changed, 16 insertions, 4 deletions

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 5ede1ddbaa1a..72aa43187731 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -18,6 +18,7 @@
 #include <linux/component.h>
 #include <linux/platform_device.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/of_graph.h>
 #include <linux/interrupt.h>
 #include <linux/types.h>
@@ -72,6 +73,7 @@ struct mtk_dpi {
         struct clk *tvd_clk;
         int irq;
         struct drm_display_mode mode;
+        const struct mtk_dpi_conf *conf;
         enum mtk_dpi_out_color_format color_format;
         enum mtk_dpi_out_yc_map yc_map;
         enum mtk_dpi_out_bit_num bit_num;
@@ -110,6 +112,10 @@ struct mtk_dpi_yc_limit {
         u16 c_bottom;
 };
 
+struct mtk_dpi_conf {
+        u32 reg_h_fre_con;
+};
+
 static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask)
 {
         u32 tmp = readl(dpi->regs + offset) & ~mask;
@@ -335,7 +341,7 @@ static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable)
 
 static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi)
 {
-        mtk_dpi_mask(dpi, DPI_H_FRE_CON, H_FRE_2N, H_FRE_2N);
+        mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N);
 }
 
 static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
@@ -639,6 +645,10 @@ static const struct component_ops mtk_dpi_component_ops = {
         .unbind = mtk_dpi_unbind,
 };
 
+static const struct mtk_dpi_conf mt8173_conf = {
+        .reg_h_fre_con = 0xe0,
+};
+
 static int mtk_dpi_probe(struct platform_device *pdev)
 {
         struct device *dev = &pdev->dev;
@@ -653,6 +663,7 @@ static int mtk_dpi_probe(struct platform_device *pdev)
                 return -ENOMEM;
 
         dpi->dev = dev;
+        dpi->conf = (struct mtk_dpi_conf *)of_device_get_match_data(dev);
 
         mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         dpi->regs = devm_ioremap_resource(dev, mem);
@@ -732,8 +743,10 @@ static int mtk_dpi_remove(struct platform_device *pdev)
 }
 
 static const struct of_device_id mtk_dpi_of_ids[] = {
-        { .compatible = "mediatek,mt8173-dpi", },
-        {}
+        { .compatible = "mediatek,mt8173-dpi",
+          .data = &mt8173_conf,
+        },
+        { },
 };
 
 struct platform_driver mtk_dpi_driver = {
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
index 4b6ad4751a31..040444d7718d 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
+++ b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
@@ -223,6 +223,5 @@
 #define ESAV_CODE2                      (0xFFF << 0)
 #define ESAV_CODE3_MSB                  BIT(16)
 
-#define DPI_H_FRE_CON           0xE0
 #define H_FRE_2N                        BIT(25)
 #endif /* __MTK_DPI_REGS_H */