linux-kernel - Re: [RESEND PATCH v6 04/17] drm/mediatek: make sout select function format same with select input

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Message-ID: <1578030279.31107.6.camel@mtksdaap41>
Date:   Fri, 3 Jan 2020 13:44:39 +0800
From:   CK Hu <ck.hu@...iatek.com>
To:     Yongqiang Niu <yongqiang.niu@...iatek.com>
CC:     Philipp Zabel <p.zabel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        "David Airlie" <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        <dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [RESEND PATCH v6 04/17] drm/mediatek: make sout select function
 format same with select input

Hi, Yongqiang:

On Fri, 2020-01-03 at 11:12 +0800, Yongqiang Niu wrote:
> there will be more sout case in the future,
> make the sout function format same mtk_ddp_sel_in
> 

Reviewed-by: CK Hu <ck.hu@...iatek.com>

> Signed-off-by: Yongqiang Niu <yongqiang.niu@...iatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 24 ++++++++++++++++--------
>  1 file changed, 16 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> index d66ce31..ae08fc4 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> @@ -386,17 +386,23 @@ static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur,
>  	return value;
>  }
>  
> -static void mtk_ddp_sout_sel(struct regmap *config_regs,
> -			     enum mtk_ddp_comp_id cur,
> -			     enum mtk_ddp_comp_id next)
> +static unsigned int mtk_ddp_sout_sel(enum mtk_ddp_comp_id cur,
> +				     enum mtk_ddp_comp_id next,
> +				     unsigned int *addr)
>  {
> +	unsigned int value;
> +
>  	if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
> -		regmap_write(config_regs, DISP_REG_CONFIG_OUT_SEL,
> -				BLS_TO_DSI_RDMA1_TO_DPI1);
> +		*addr = DISP_REG_CONFIG_OUT_SEL;
> +		value = BLS_TO_DSI_RDMA1_TO_DPI1;
>  	} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
> -		regmap_write(config_regs, DISP_REG_CONFIG_OUT_SEL,
> -				BLS_TO_DPI_RDMA1_TO_DSI);
> +		*addr = DISP_REG_CONFIG_OUT_SEL;
> +		value = BLS_TO_DPI_RDMA1_TO_DSI;
> +	} else {
> +		value = 0;
>  	}
> +
> +	return value;
>  }
>  
>  void mtk_ddp_add_comp_to_path(struct regmap *config_regs,
> @@ -409,7 +415,9 @@ void mtk_ddp_add_comp_to_path(struct regmap *config_regs,
>  	if (value)
>  		regmap_update_bits(config_regs, addr, value, value);
>  
> -	mtk_ddp_sout_sel(config_regs, cur, next);
> +	value = mtk_ddp_sout_sel(cur, next, &addr);
> +	if (value)
> +		regmap_update_bits(config_regs, addr, value, value);
>  
>  	value = mtk_ddp_sel_in(cur, next, &addr);
>  	if (value)