Hi, Bibby:
On Fri, 2018-09-21 at 11:28 +0800, Bibby Hsieh wrote:
> From: chunhui dai <chunhui.dai@xxxxxxxxxxxx>
>
> The address of register DPI_H_FRE_CON is different in different IC.
> Using of_node data to find this address.
>
Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>
> Signed-off-by: chunhui dai <chunhui.dai@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/mediatek/mtk_dpi.c | 19 ++++++++++++++++---
> drivers/gpu/drm/mediatek/mtk_dpi_regs.h | 1 -
> 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 d9373e67d328..74a32833bde1 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;
> @@ -117,6 +119,10 @@ 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;
> @@ -342,7 +348,7 @@ 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 +674,10 @@ 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;
> @@ -682,6 +692,7 @@ 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);
> @@ -761,8 +772,10 @@ 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 */
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