linux-kernel - Re: [PATCH 2/7] drm/mediatek: plane: Remove plane zpos/index

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Date:	Fri, 29 Jul 2016 18:14:45 +0800
From:	CK Hu <ck.hu@...iatek.com>
To:	Bibby Hsieh <bibby.hsieh@...iatek.com>
CC:	David Airlie <airlied@...ux.ie>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	<dri-devel@...ts.freedesktop.org>,
	<linux-mediatek@...ts.infradead.org>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	Cawa Cheng <cawa.cheng@...iatek.com>,
	Daniel Kurtz <djkurtz@...omium.org>,
	"Philipp Zabel" <p.zabel@...gutronix.de>,
	YT Shen <yt.shen@...iatek.com>,
	"Thierry Reding" <thierry.reding@...il.com>,
	Mao Huang <littlecvr@...omium.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>,
	"Sascha Hauer" <kernel@...gutronix.de>
Subject: Re: [PATCH 2/7] drm/mediatek: plane: Remove plane zpos/index

Hi, Bibby:

On Fri, 2016-07-29 at 17:04 +0800, Bibby Hsieh wrote:
> From: Daniel Kurtz <djkurtz@...omium.org>
> 
> It is not actually useful to a mtk plane to know its zpos/index, so just
> remove this field.
> 
> This let's us completely remove struct mtk_drm_plane in a follow up patch.

'let's us'? My English is not as good as native English speaker.
Otherwise, this patch looks good to me.

> 
> Signed-off-by: Daniel Kurtz <djkurtz@...omium.org>
> Signed-off-by: Bibby Hsieh <bibby.hsieh@...iatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c  |    2 +-
>  drivers/gpu/drm/mediatek/mtk_drm_plane.c |    4 +---
>  drivers/gpu/drm/mediatek/mtk_drm_plane.h |    4 +---
>  3 files changed, 3 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index 24aa3ba..18211ab 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -559,7 +559,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
>  				(zpos == 1) ? DRM_PLANE_TYPE_CURSOR :
>  						DRM_PLANE_TYPE_OVERLAY;
>  		ret = mtk_plane_init(drm_dev, &mtk_crtc->planes[zpos],
> -				     BIT(pipe), type, zpos);
> +				     BIT(pipe), type);
>  		if (ret)
>  			goto unprepare;
>  	}
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> index 093db07..d28db57 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> @@ -189,8 +189,7 @@ static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = {
>  };
>  
>  int mtk_plane_init(struct drm_device *dev, struct mtk_drm_plane *mtk_plane,
> -		   unsigned long possible_crtcs, enum drm_plane_type type,
> -		   unsigned int zpos)
> +		   unsigned long possible_crtcs, enum drm_plane_type type)
>  {
>  	int err;
>  
> @@ -203,7 +202,6 @@ int mtk_plane_init(struct drm_device *dev, struct mtk_drm_plane *mtk_plane,
>  	}
>  
>  	drm_plane_helper_add(&mtk_plane->base, &mtk_plane_helper_funcs);
> -	mtk_plane->idx = zpos;
>  
>  	return 0;
>  }
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.h b/drivers/gpu/drm/mediatek/mtk_drm_plane.h
> index 72a7b3e..74dbeda 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.h
> @@ -20,7 +20,6 @@
>  
>  struct mtk_drm_plane {
>  	struct drm_plane		base;
> -	unsigned int			idx;
>  };
>  
>  struct mtk_plane_pending_state {
> @@ -53,7 +52,6 @@ to_mtk_plane_state(struct drm_plane_state *state)
>  }
>  
>  int mtk_plane_init(struct drm_device *dev, struct mtk_drm_plane *mtk_plane,
> -		   unsigned long possible_crtcs, enum drm_plane_type type,
> -		   unsigned int zpos);
> +		   unsigned long possible_crtcs, enum drm_plane_type type);
>  
>  #endif

Regards,
CK