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Date:   Thu, 6 Jun 2019 14:12:28 +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 v3, 08/27] drm/mediatek: add mutex sof into ddp private
 data

Hi, Yongqiang:

On Wed, 2019-06-05 at 19:42 +0800, yongqiang.niu@...iatek.com wrote:
> From: Yongqiang Niu <yongqiang.niu@...iatek.com>
> 
> mutex sof will be ddp private data
> 
> Signed-off-by: Yongqiang Niu <yongqiang.niu@...iatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 44 +++++++++++++++++++++++++++-------
>  1 file changed, 36 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> index 8bde2cf..e1a510f 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> @@ -149,8 +149,20 @@ struct mtk_disp_mutex {
>  	bool claimed;
>  };
>  
> +enum mtk_ddp_mutex_sof_id {
> +	DDP_MUTEX_SOF_SINGLE_MODE,
> +	DDP_MUTEX_SOF_DSI0,
> +	DDP_MUTEX_SOF_DSI1,
> +	DDP_MUTEX_SOF_DPI0,
> +	DDP_MUTEX_SOF_DPI1,
> +	DDP_MUTEX_SOF_DSI2,
> +	DDP_MUTEX_SOF_DSI3,
> +	DDP_MUTEX_SOF_MAX,

DDP_MUTEX_SOF_MAX can be removed.

Regards,
CK

> +};
> +
>  struct mtk_ddp_data {
>  	const unsigned int *mutex_mod;
> +	const unsigned int *mutex_sof;
>  	const unsigned int mutex_mod_reg;
>  };
>  
> @@ -209,18 +221,31 @@ struct mtk_ddp {
>  	[DDP_COMPONENT_WDMA1] = MT8173_MUTEX_MOD_DISP_WDMA1,
>  };
>  
> +static const unsigned int mt2712_mutex_sof[DDP_MUTEX_SOF_MAX] = {
> +	[DDP_MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE,
> +	[DDP_MUTEX_SOF_DSI0] = MUTEX_SOF_DSI0,
> +	[DDP_MUTEX_SOF_DSI1] = MUTEX_SOF_DSI1,
> +	[DDP_MUTEX_SOF_DPI0] = MUTEX_SOF_DPI0,
> +	[DDP_MUTEX_SOF_DPI1] = MUTEX_SOF_DPI1,
> +	[DDP_MUTEX_SOF_DSI2] = MUTEX_SOF_DSI2,
> +	[DDP_MUTEX_SOF_DSI3] = MUTEX_SOF_DSI3,
> +};
> +
>  static const struct mtk_ddp_data mt2701_ddp_driver_data = {
>  	.mutex_mod = mt2701_mutex_mod,
> +	.mutex_sof = mt2712_mutex_sof,
>  	.mutex_mod_reg = MT2701_DISP_MUTEX0_MOD0,
>  };
>  
>  static const struct mtk_ddp_data mt2712_ddp_driver_data = {
>  	.mutex_mod = mt2712_mutex_mod,
> +	.mutex_sof = mt2712_mutex_sof,
>  	.mutex_mod_reg = MT2701_DISP_MUTEX0_MOD0,
>  };
>  
>  static const struct mtk_ddp_data mt8173_ddp_driver_data = {
>  	.mutex_mod = mt8173_mutex_mod,
> +	.mutex_sof = mt2712_mutex_sof,
>  	.mutex_mod_reg = MT2701_DISP_MUTEX0_MOD0,
>  };
>  
> @@ -462,28 +487,29 @@ void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
>  	struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp,
>  					   mutex[mutex->id]);
>  	unsigned int reg;
> +	unsigned int sof_id;
>  	unsigned int offset;
>  
>  	WARN_ON(&ddp->mutex[mutex->id] != mutex);
>  
>  	switch (id) {
>  	case DDP_COMPONENT_DSI0:
> -		reg = MUTEX_SOF_DSI0;
> +		sof_id = DDP_MUTEX_SOF_DSI0;
>  		break;
>  	case DDP_COMPONENT_DSI1:
> -		reg = MUTEX_SOF_DSI0;
> +		sof_id = DDP_MUTEX_SOF_DSI0;
>  		break;
>  	case DDP_COMPONENT_DSI2:
> -		reg = MUTEX_SOF_DSI2;
> +		sof_id = DDP_MUTEX_SOF_DSI2;
>  		break;
>  	case DDP_COMPONENT_DSI3:
> -		reg = MUTEX_SOF_DSI3;
> +		sof_id = DDP_MUTEX_SOF_DSI3;
>  		break;
>  	case DDP_COMPONENT_DPI0:
> -		reg = MUTEX_SOF_DPI0;
> +		sof_id = DDP_MUTEX_SOF_DPI0;
>  		break;
>  	case DDP_COMPONENT_DPI1:
> -		reg = MUTEX_SOF_DPI1;
> +		sof_id = DDP_MUTEX_SOF_DPI1;
>  		break;
>  	default:
>  		if (ddp->data->mutex_mod[id] < 32) {
> @@ -501,7 +527,8 @@ void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
>  		return;
>  	}
>  
> -	writel_relaxed(reg, ddp->regs + DISP_REG_MUTEX_SOF(mutex->id));
> +	writel_relaxed(ddp->data->mutex_sof[sof_id],
> +		       ddp->regs + DISP_REG_MUTEX_SOF(mutex->id));
>  }
>  
>  void mtk_disp_mutex_remove_comp(struct mtk_disp_mutex *mutex,
> @@ -522,7 +549,8 @@ void mtk_disp_mutex_remove_comp(struct mtk_disp_mutex *mutex,
>  	case DDP_COMPONENT_DPI0:
>  	case DDP_COMPONENT_DPI1:
>  		writel_relaxed(MUTEX_SOF_SINGLE_MODE,
> -			       ddp->regs + DISP_REG_MUTEX_SOF(mutex->id));
> +			       ddp->regs +
> +			       DISP_REG_MUTEX_SOF(mutex->id));
>  		break;
>  	default:
>  		if (ddp->data->mutex_mod[id] < 32) {


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