linux-kernel - Re: [PATCH v4, 08/33] drm/mediatek: add mutex mod into ddp private data

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1563340974.29169.11.camel@mtksdaap41>
Date:   Wed, 17 Jul 2019 13:22:54 +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 v4, 08/33] drm/mediatek: add mutex mod into ddp private
 data

Hi, Yongqiang:

On Tue, 2019-07-09 at 06:33 +0800, yongqiang.niu@...iatek.com wrote:
> From: Yongqiang Niu <yongqiang.niu@...iatek.com>
> 
> except mutex mod, mutex mod reg,mutex sof reg,
> and mutex sof id will be ddp private data

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 | 41 +++++++++++++++++++++++++---------
>  1 file changed, 30 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> index 579ce28..412b82f 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> @@ -147,12 +147,16 @@ struct mtk_disp_mutex {
>  	bool claimed;
>  };
>  
> +struct mtk_ddp_data {
> +	const unsigned int *mutex_mod;
> +};
> +
>  struct mtk_ddp {
>  	struct device			*dev;
>  	struct clk			*clk;
>  	void __iomem			*regs;
>  	struct mtk_disp_mutex		mutex[10];
> -	const unsigned int		*mutex_mod;
> +	const struct mtk_ddp_data	*data;
>  };
>  
>  static const unsigned int mt2701_mutex_mod[DDP_COMPONENT_ID_MAX] = {
> @@ -202,6 +206,18 @@ struct mtk_ddp {
>  	[DDP_COMPONENT_WDMA1] = MT8173_MUTEX_MOD_DISP_WDMA1,
>  };
>  
> +static const struct mtk_ddp_data mt2701_ddp_driver_data = {
> +	.mutex_mod = mt2701_mutex_mod,
> +};
> +
> +static const struct mtk_ddp_data mt2712_ddp_driver_data = {
> +	.mutex_mod = mt2712_mutex_mod,
> +};
> +
> +static const struct mtk_ddp_data mt8173_ddp_driver_data = {
> +	.mutex_mod = mt8173_mutex_mod,
> +};
> +
>  static unsigned int mtk_ddp_mout_en(enum mtk_ddp_comp_id cur,
>  				    enum mtk_ddp_comp_id next,
>  				    unsigned int *addr)
> @@ -464,15 +480,15 @@ void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
>  		reg = MUTEX_SOF_DPI1;
>  		break;
>  	default:
> -		if (ddp->mutex_mod[id] < 32) {
> +		if (ddp->data->mutex_mod[id] < 32) {
>  			offset = DISP_REG_MUTEX_MOD(mutex->id);
>  			reg = readl_relaxed(ddp->regs + offset);
> -			reg |= 1 << ddp->mutex_mod[id];
> +			reg |= 1 << ddp->data->mutex_mod[id];
>  			writel_relaxed(reg, ddp->regs + offset);
>  		} else {
>  			offset = DISP_REG_MUTEX_MOD2(mutex->id);
>  			reg = readl_relaxed(ddp->regs + offset);
> -			reg |= 1 << (ddp->mutex_mod[id] - 32);
> +			reg |= 1 << (ddp->data->mutex_mod[id] - 32);
>  			writel_relaxed(reg, ddp->regs + offset);
>  		}
>  		return;
> @@ -502,15 +518,15 @@ void mtk_disp_mutex_remove_comp(struct mtk_disp_mutex *mutex,
>  			       ddp->regs + DISP_REG_MUTEX_SOF(mutex->id));
>  		break;
>  	default:
> -		if (ddp->mutex_mod[id] < 32) {
> +		if (ddp->data->mutex_mod[id] < 32) {
>  			offset = DISP_REG_MUTEX_MOD(mutex->id);
>  			reg = readl_relaxed(ddp->regs + offset);
> -			reg &= ~(1 << ddp->mutex_mod[id]);
> +			reg &= ~(1 << ddp->data->mutex_mod[id]);
>  			writel_relaxed(reg, ddp->regs + offset);
>  		} else {
>  			offset = DISP_REG_MUTEX_MOD2(mutex->id);
>  			reg = readl_relaxed(ddp->regs + offset);
> -			reg &= ~(1 << (ddp->mutex_mod[id] - 32));
> +			reg &= ~(1 << (ddp->data->mutex_mod[id] - 32));
>  			writel_relaxed(reg, ddp->regs + offset);
>  		}
>  		break;
> @@ -585,7 +601,7 @@ static int mtk_ddp_probe(struct platform_device *pdev)
>  		return PTR_ERR(ddp->regs);
>  	}
>  
> -	ddp->mutex_mod = of_device_get_match_data(dev);
> +	ddp->data = of_device_get_match_data(dev);
>  
>  	platform_set_drvdata(pdev, ddp);
>  
> @@ -598,9 +614,12 @@ static int mtk_ddp_remove(struct platform_device *pdev)
>  }
>  
>  static const struct of_device_id ddp_driver_dt_match[] = {
> -	{ .compatible = "mediatek,mt2701-disp-mutex", .data = mt2701_mutex_mod},
> -	{ .compatible = "mediatek,mt2712-disp-mutex", .data = mt2712_mutex_mod},
> -	{ .compatible = "mediatek,mt8173-disp-mutex", .data = mt8173_mutex_mod},
> +	{ .compatible = "mediatek,mt2701-disp-mutex",
> +	  .data = &mt2701_ddp_driver_data},
> +	{ .compatible = "mediatek,mt2712-disp-mutex",
> +	  .data = &mt2712_ddp_driver_data},
> +	{ .compatible = "mediatek,mt8173-disp-mutex",
> +	  .data = &mt8173_ddp_driver_data},
>  	{},
>  };
>  MODULE_DEVICE_TABLE(of, ddp_driver_dt_match);