linux-kernel - Re: [PATCH v5, 30/32] drm/mediatek: add connection from DITHER0 to DSI0

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Date:   Fri, 30 Aug 2019 14:34:32 +0800
From:   CK Hu <ck.hu@...iatek.com>
To:     <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: [PATCH v5, 30/32] drm/mediatek: add connection from DITHER0 to
 DSI0

Hi, Yongqiang:

On Thu, 2019-08-29 at 22:50 +0800, yongqiang.niu@...iatek.com wrote:
> From: Yongqiang Niu <yongqiang.niu@...iatek.com>
> 
> This patch add connection from DITHER0 to DSI0

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 | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> index 237824f..fd38658 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> @@ -35,10 +35,12 @@
>  
>  #define MT8183_DISP_OVL0_2L_MOUT_EN		0xf04
>  #define MT8183_DISP_OVL1_2L_MOUT_EN		0xf08
> +#define MT8183_DISP_DITHER0_MOUT_EN		0xf0c
>  #define MT8183_DISP_PATH0_SEL_IN		0xf24
>  
>  #define OVL0_2L_MOUT_EN_DISP_PATH0			BIT(0)
>  #define OVL1_2L_MOUT_EN_RDMA1				BIT(4)
> +#define DITHER0_MOUT_IN_DSI0				BIT(0)
>  #define DISP_PATH0_SEL_IN_OVL0_2L			0x1
>  
>  #define MT2701_DISP_MUTEX0_MOD0			0x2c
> @@ -323,6 +325,9 @@ static unsigned int mtk_ddp_mout_en(const struct mtk_mmsys_reg_data *data,
>  		   next == DDP_COMPONENT_RDMA1) {
>  		*addr = MT8183_DISP_OVL1_2L_MOUT_EN;
>  		value = OVL1_2L_MOUT_EN_RDMA1;
> +	} else if (cur == DDP_COMPONENT_DITHER && next == DDP_COMPONENT_DSI0) {
> +		*addr = MT8183_DISP_DITHER0_MOUT_EN;
> +		value = DITHER0_MOUT_IN_DSI0;
>  	} else {
>  		value = 0;
>  	}