Re: [PATCH v7,1/3] soc: mediatek: Add mmsys func to adapt to dpi output for MT8186

[xinlei.lee <xinlei.lee@mediatek.com>]

On Thu, 2022-09-22 at 15:29 +0800, xinlei.lee@mediatek.com wrote:
> 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.
> 
> Co-developed-by: Jitao Shi <jitao.shi@mediatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
> ---
>  drivers/soc/mediatek/mt8186-mmsys.h    |  8 +++++++
>  drivers/soc/mediatek/mtk-mmsys.c       | 32
> ++++++++++++++++++++++++++
>  include/linux/soc/mediatek/mtk-mmsys.h |  9 ++++++++
>  3 files changed, 49 insertions(+)
> 
> diff --git a/drivers/soc/mediatek/mt8186-mmsys.h
> b/drivers/soc/mediatek/mt8186-mmsys.h
> index eb1ad9c37a9c..536005d1cc55 100644
> --- a/drivers/soc/mediatek/mt8186-mmsys.h
> +++ b/drivers/soc/mediatek/mt8186-mmsys.h
> @@ -3,6 +3,14 @@
>  #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					0x3
> +#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
>  #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..0857806206dc 100644
> --- a/drivers/soc/mediatek/mtk-mmsys.c
> +++ b/drivers/soc/mediatek/mtk-mmsys.c
> @@ -227,6 +227,38 @@ 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)
> +{
> +	switch (val) {
> +	case MTK_DPI_RGB888_DDR_CON:
> +		mtk_mmsys_update_bits(dev_get_drvdata(dev),
> MT8186_MMSYS_DPI_OUTPUT_FORMAT,
> +				      DPI_FORMAT_MASK,
> DPI_RGB888_DDR_CON);
> +		break;
> +	case MTK_DPI_RGB565_SDR_CON:
> +		mtk_mmsys_update_bits(dev_get_drvdata(dev),
> MT8186_MMSYS_DPI_OUTPUT_FORMAT,
> +				      DPI_FORMAT_MASK,
> DPI_RGB565_SDR_CON);
> +		break;
> +	case MTK_DPI_RGB565_DDR_CON:
> +		mtk_mmsys_update_bits(dev_get_drvdata(dev),
> MT8186_MMSYS_DPI_OUTPUT_FORMAT,
> +				      DPI_FORMAT_MASK,
> DPI_RGB565_DDR_CON);
> +		break;
> +	default:
> +		mtk_mmsys_update_bits(dev_get_drvdata(dev),
> MT8186_MMSYS_DPI_OUTPUT_FORMAT,
> +				      DPI_FORMAT_MASK,
> DPI_RGB888_DDR_CON);
> +		break;
> +	}
> +}
> +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..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,
> @@ -65,4 +72,6 @@ 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 */

Hi matthias:

Sorry I didn't notice that this one has been applied in the v6
version. 
I will submit a diff patch based on the v6 patch later.

Best Regards!
Xineli


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