Re: [PATCH v3, 10/27] drm/mediatek: split DISP_REG_CONFIG_DSI_SEL setting into another use case

[CK Hu]

+Bibby:

Hi, Yongqiang:

On Wed, 2019-06-05 at 19:42 +0800, yongqiang.niu@xxxxxxxxxxxx wrote:
> From: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
> 
> Here is two modifition in this patch:
> 1.bls->dpi0 and rdma1->dsi are differen usecase,
> Split DISP_REG_CONFIG_DSI_SEL setting into anther usecase
> 2.remove DISP_REG_CONFIG_DPI_SEL setting, DPI_SEL_IN_BLS is 0 and
> this is same with hardware defautl setting,
> 
> Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> index 717609d..1bbabe6 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> @@ -401,10 +401,9 @@ static void mtk_ddp_sout_sel(void __iomem *config_regs,
>  	} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
>  		writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI,
>  			       config_regs + DISP_REG_CONFIG_OUT_SEL);

You move 2 register setting out of the path from BLS to DPI0, does this
path still work? Please make sure that all modification could work on
all supported SoC.

Regards,
CK

> +	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) {
>  		writel_relaxed(DSI_SEL_IN_RDMA,
>  			       config_regs + DISP_REG_CONFIG_DSI_SEL);
> -		writel_relaxed(DPI_SEL_IN_BLS,
> -			       config_regs + DISP_REG_CONFIG_DPI_SEL);
>  	}
>  }
>