[PATCH v2 02/13] drm/mediatek: move hardware register to node data

Bibby Hsieh
2018-09-05T08:32:18Z

From: chunhui dai <chunhui.dai@mediatek.com>

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>
---
drivers/gpu/drm/mediatek/mtk_dpi.c | 29 +++++++++++++++++++++++------
drivers/gpu/drm/mediatek/mtk_dpi_regs.h | 1 -
2 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index d9373e67d328..3db959fed493 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -72,6 +72,7 @@ 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;
@@ -117,6 +118,10 @@ struct mtk_dpi_yc_limit {
u16 c_bottom;
};

+struct mtk_dpi_conf {
+ const 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;
@@ -342,7 +347,7 @@ 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,
@@ -668,6 +673,18 @@ 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 const struct of_device_id mtk_dpi_of_ids[] = {
+ { .compatible = "mediatek,mt8173-dpi",
+ .data = &mt8173_conf,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, mtk_dpi_of_ids);
+
static int mtk_dpi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -675,13 +692,18 @@ static int mtk_dpi_probe(struct platform_device *pdev)
struct resource *mem;
struct device_node *bridge_node;
int comp_id;
+ const struct of_device_id *match;
int ret;

+ match = of_match_node(mtk_dpi_of_ids, dev->of_node);
+ if (!match)
+ return -ENODEV;
dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);
if (!dpi)
return -ENOMEM;

dpi->dev = dev;
+ dpi->conf = (struct mtk_dpi_conf *)match->data;

mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
dpi->regs = devm_ioremap_resource(dev, mem);
@@ -760,11 +782,6 @@ static int mtk_dpi_remove(struct platform_device *pdev)
return 0;
}

-static const struct of_device_id mtk_dpi_of_ids[] = {
- { .compatible = "mediatek,mt8173-dpi", },
- {}
-};
-
struct platform_driver mtk_dpi_driver = {
.probe = mtk_dpi_probe,
.remove = mtk_dpi_remove,
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 */
--
2.12.5.2.gbdf23ab