drm: rockchip: remove rockchip_drm_framebuffer_init() function

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@gmail.com>
Reviewed-by: John Keeping <john@metanate.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/ebe91504-c5df-99e4-635f-832218584051@gmail.com

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;

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 */