linux-kernel - Re: [PATCH v6,1/3] soc: mediatek: Add mmsys func to adapt to dpi output for MT8186

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Date:   Thu, 15 Sep 2022 18:17:56 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     xinlei.lee@...iatek.com, jason-jh.lin@...iatek.com,
        rex-bc.chen@...iatek.com, angelogioacchino.delregno@...labora.com,
        ck.hu@...iatek.com, p.zabel@...gutronix.de, airlied@...ux.ie,
        daniel@...ll.ch
Cc:     dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        jitao.shi@...iatek.com,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v6,1/3] soc: mediatek: Add mmsys func to adapt to dpi
 output for MT8186



On 14/09/2022 15:21, xinlei.lee@...iatek.com wrote:
> From: Xinlei Lee <xinlei.lee@...iatek.com>
> 
> Add mmsys func to manipulate dpi output format config for MT8186.
> 
> Co-developed-by: Jitao Shi <jitao.shi@...iatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@...iatek.com>
> Signed-off-by: Xinlei Lee <xinlei.lee@...iatek.com>
> Reviewed-by: Nís F. R. A. Prado <nfraprado@...labora.com>

Applied, thanks!


> ---
>   drivers/soc/mediatek/mt8186-mmsys.h    |  6 ++++++
>   drivers/soc/mediatek/mtk-mmsys.c       | 20 ++++++++++++++++++++
>   include/linux/soc/mediatek/mtk-mmsys.h |  2 ++
>   3 files changed, 28 insertions(+)
> 
> diff --git a/drivers/soc/mediatek/mt8186-mmsys.h b/drivers/soc/mediatek/mt8186-mmsys.h
> index eb1ad9c37a9c..09b1ccbc0093 100644
> --- a/drivers/soc/mediatek/mt8186-mmsys.h
> +++ b/drivers/soc/mediatek/mt8186-mmsys.h
> @@ -3,6 +3,12 @@
>   #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					0x1
> +#define DPI_RGB888_DDR_CON				BIT(0)
> +#define DPI_RGB565_SDR_CON				BIT(1)
> +
>   #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..2e20b24da363 100644
> --- a/drivers/soc/mediatek/mtk-mmsys.c
> +++ b/drivers/soc/mediatek/mtk-mmsys.c
> @@ -227,6 +227,26 @@ 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)
> +{
> +	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);
> +}
> +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..d2b02bb43768 100644
> --- a/include/linux/soc/mediatek/mtk-mmsys.h
> +++ b/include/linux/soc/mediatek/mtk-mmsys.h
> @@ -65,4 +65,6 @@ 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 */