linux-kernel - Re: [PATCH v1] drm: rockchip: remove rockchip_drm_framebuffer

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Message-ID: <Y1EVSNa6bkh5JCLV@donbot>
Date:   Thu, 20 Oct 2022 10:30:48 +0100
From:   John Keeping <john@...anate.com>
To:     Johan Jonker <jbx6244@...il.com>
Cc:     heiko@...ech.de, hjc@...k-chips.com, airlied@...il.com,
        daniel@...ll.ch, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] drm: rockchip: remove rockchip_drm_framebuffer_init()
 function

On Wed, Oct 19, 2022 at 11:35:03PM +0200, Johan Jonker wrote:
> The function rockchip_drm_framebuffer_init() was in use
> in the rockchip_drm_fbdev.c file, but that is now replaced
> by a generic fbdev setup. Reduce the image size by
> removing the rockchip_drm_framebuffer_init() and sub function
> rockchip_fb_alloc() and cleanup the rockchip_drm_fb.h header file.
> 
> Signed-off-by: Johan Jonker <jbx6244@...il.com>

Reviewed-by: John Keeping <john@...anate.com>

> ---
>  drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 43 ----------------------
>  drivers/gpu/drm/rockchip/rockchip_drm_fb.h |  6 ---
>  2 files changed, 49 deletions(-)
> 
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
> index 092bf863110b..409eaa1bf092 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
> @@ -25,35 +25,6 @@ static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
>  	.dirty	       = drm_atomic_helper_dirtyfb,
>  };
>  
> -static struct drm_framebuffer *
> -rockchip_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd,
> -		  struct drm_gem_object **obj, unsigned int num_planes)
> -{
> -	struct drm_framebuffer *fb;
> -	int ret;
> -	int i;
> -
> -	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
> -	if (!fb)
> -		return ERR_PTR(-ENOMEM);
> -
> -	drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
> -
> -	for (i = 0; i < num_planes; i++)
> -		fb->obj[i] = obj[i];
> -
> -	ret = drm_framebuffer_init(dev, fb, &rockchip_drm_fb_funcs);
> -	if (ret) {
> -		DRM_DEV_ERROR(dev->dev,
> -			      "Failed to initialize framebuffer: %d\n",
> -			      ret);
> -		kfree(fb);
> -		return ERR_PTR(ret);
> -	}
> -
> -	return fb;
> -}
> -
>  static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {
>  	.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
>  };
> @@ -106,20 +77,6 @@ static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
>  	.atomic_commit = drm_atomic_helper_commit,
>  };
>  
> -struct drm_framebuffer *
> -rockchip_drm_framebuffer_init(struct drm_device *dev,
> -			      const struct drm_mode_fb_cmd2 *mode_cmd,
> -			      struct drm_gem_object *obj)
> -{
> -	struct drm_framebuffer *fb;
> -
> -	fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
> -	if (IS_ERR(fb))
> -		return ERR_CAST(fb);
> -
> -	return fb;
> -}
> -
>  void rockchip_drm_mode_config_init(struct drm_device *dev)
>  {
>  	dev->mode_config.min_width = 0;
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.h b/drivers/gpu/drm/rockchip/rockchip_drm_fb.h
> index 1a696521096d..bae4e079dfb1 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.h
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.h
> @@ -7,11 +7,5 @@
>  #ifndef _ROCKCHIP_DRM_FB_H
>  #define _ROCKCHIP_DRM_FB_H
>  
> -struct drm_framebuffer *
> -rockchip_drm_framebuffer_init(struct drm_device *dev,
> -			      const struct drm_mode_fb_cmd2 *mode_cmd,
> -			      struct drm_gem_object *obj);
> -void rockchip_drm_framebuffer_fini(struct drm_framebuffer *fb);
> -
>  void rockchip_drm_mode_config_init(struct drm_device *dev);
>  #endif /* _ROCKCHIP_DRM_FB_H */
> -- 
> 2.20.1
>