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Message-ID: <1533272894.31144.4.camel@mtksdaap41>
Subject: Re: [PATCH v2 10/15] drm/mediatek: add function to get layer number
 for component
From:   CK Hu <ck.hu@mediatek.com>
To:     Stu Hsieh <stu.hsieh@mediatek.com>
CC:     Philipp Zabel <p.zabel@pengutronix.de>,
        David Airlie <airlied@linux.ie>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        <dri-devel@lists.freedesktop.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-mediatek@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <srv_heupstream@mediatek.com>
Date:   Fri, 3 Aug 2018 13:08:14 +0800
In-Reply-To: <1533265868-28110-11-git-send-email-stu.hsieh@mediatek.com>
References: <1533265868-28110-1-git-send-email-stu.hsieh@mediatek.com>
         <1533265868-28110-11-git-send-email-stu.hsieh@mediatek.com>
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Sender: linux-kernel-owner@vger.kernel.org
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Hi, Stu:

On Fri, 2018-08-03 at 11:11 +0800, Stu Hsieh wrote:
> This patch add function to get layer number for component
> 
> Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>

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

> ---
>  drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> index a1988ce15141..8377e4f9ce3d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> @@ -78,6 +78,7 @@ struct mtk_ddp_comp_funcs {
>  	void (*stop)(struct mtk_ddp_comp *comp);
>  	void (*enable_vblank)(struct mtk_ddp_comp *comp, struct drm_crtc *crtc);
>  	void (*disable_vblank)(struct mtk_ddp_comp *comp);
> +	unsigned int (*layer_nr)(struct mtk_ddp_comp *comp);
>  	void (*layer_on)(struct mtk_ddp_comp *comp, unsigned int idx);
>  	void (*layer_off)(struct mtk_ddp_comp *comp, unsigned int idx);
>  	void (*layer_config)(struct mtk_ddp_comp *comp, unsigned int idx,
> @@ -129,6 +130,12 @@ static inline void mtk_ddp_comp_disable_vblank(struct mtk_ddp_comp *comp)
>  		comp->funcs->disable_vblank(comp);
>  }
>  
> +static inline unsigned int mtk_ddp_comp_layer_nr(struct mtk_ddp_comp *comp)
> +{
> +	if (comp->funcs && comp->funcs->layer_nr)
> +		return comp->funcs->layer_nr(comp);
> +}
> +
>  static inline void mtk_ddp_comp_layer_on(struct mtk_ddp_comp *comp,
>  					 unsigned int idx)
>  {