linux-kernel - Re: [PATCH v11 06/12] drm/mediatek: update display module connections

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Message-ID: <1484630380.5483.1.camel@mtksdaap41>
Date:   Tue, 17 Jan 2017 13:19:40 +0800
From:   CK Hu <ck.hu@...iatek.com>
To:     YT Shen <yt.shen@...iatek.com>
CC:     <dri-devel@...ts.freedesktop.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Rob Herring <robh+dt@...nel.org>,
        "Mark Rutland" <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>, <yingjoe.chen@...iatek.com>,
        <emil.l.velikov@...il.com>, <thierry.reding@...il.com>,
        Daniel Kurtz <djkurtz@...omium.org>
Subject: Re: [PATCH v11 06/12] drm/mediatek: update display module
 connections

Hi, YT:

On Wed, 2017-01-11 at 14:51 +0800, YT Shen wrote:
> update connections for OVL, RDMA, BLS, DSI
> 
> Signed-off-by: YT Shen <yt.shen@...iatek.com>

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

> ---
>  drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> index b77d456..a9b209c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> @@ -32,6 +32,10 @@
>  #define DISP_REG_CONFIG_DISP_RDMA1_MOUT_EN	0x0c8
>  #define DISP_REG_CONFIG_MMSYS_CG_CON0		0x100
>  
> +#define DISP_REG_CONFIG_DISP_OVL_MOUT_EN	0x030
> +#define DISP_REG_CONFIG_OUT_SEL			0x04c
> +#define DISP_REG_CONFIG_DSI_SEL			0x050
> +
>  #define DISP_REG_MUTEX_EN(n)	(0x20 + 0x20 * (n))
>  #define DISP_REG_MUTEX(n)	(0x24 + 0x20 * (n))
>  #define DISP_REG_MUTEX_RST(n)	(0x28 + 0x20 * (n))
> @@ -71,6 +75,10 @@
>  #define DPI0_SEL_IN_RDMA1		0x1
>  #define COLOR1_SEL_IN_OVL1		0x1
>  
> +#define OVL_MOUT_EN_RDMA		0x1
> +#define BLS_TO_DSI_RDMA1_TO_DPI1	0x8
> +#define DSI_SEL_IN_BLS			0x0
> +
>  struct mtk_disp_mutex {
>  	int id;
>  	bool claimed;
> @@ -111,6 +119,9 @@ static unsigned int mtk_ddp_mout_en(enum mtk_ddp_comp_id cur,
>  	if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
>  		*addr = DISP_REG_CONFIG_DISP_OVL0_MOUT_EN;
>  		value = OVL0_MOUT_EN_COLOR0;
> +	} else if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_RDMA0) {
> +		*addr = DISP_REG_CONFIG_DISP_OVL_MOUT_EN;
> +		value = OVL_MOUT_EN_RDMA;
>  	} else if (cur == DDP_COMPONENT_OD && next == DDP_COMPONENT_RDMA0) {
>  		*addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
>  		value = OD_MOUT_EN_RDMA0;
> @@ -148,6 +159,9 @@ static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur,
>  	} else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
>  		*addr = DISP_REG_CONFIG_DISP_COLOR1_SEL_IN;
>  		value = COLOR1_SEL_IN_OVL1;
> +	} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
> +		*addr = DISP_REG_CONFIG_DSI_SEL;
> +		value = DSI_SEL_IN_BLS;
>  	} else {
>  		value = 0;
>  	}
> @@ -155,6 +169,15 @@ static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur,
>  	return value;
>  }
>  
> +static void mtk_ddp_sout_sel(void __iomem *config_regs,
> +			     enum mtk_ddp_comp_id cur,
> +			     enum mtk_ddp_comp_id next)
> +{
> +	if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0)
> +		writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1,
> +			       config_regs + DISP_REG_CONFIG_OUT_SEL);
> +}
> +
>  void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
>  			      enum mtk_ddp_comp_id cur,
>  			      enum mtk_ddp_comp_id next)
> @@ -167,6 +190,8 @@ void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
>  		writel_relaxed(reg, config_regs + addr);
>  	}
>  
> +	mtk_ddp_sout_sel(config_regs, cur, next);
> +
>  	value = mtk_ddp_sel_in(cur, next, &addr);
>  	if (value) {
>  		reg = readl_relaxed(config_regs + addr) | value;