drm/cirrus: Use new drm_fb_helper functions

Use the newly created wrapper drm_fb_helper functions instead of calling
core fbdev functions directly.

v3:
- Don't touch remove_conflicting_framebuffers

v2:
- Remove stray goto label out_iounmap

Cc: Thierry Reding <treding@nvidia.com>
Cc: Zach Reizner <zachr@google.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Fabian Frederick <fabf@skynet.be>

Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/cirrus/cirrus_drv.c

@@ -92,7 +92,7 @@ static int cirrus_pm_suspend(struct device *dev)
 
 	if (cdev->mode_info.gfbdev) {
 		console_lock();
-		fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 1);
+		drm_fb_helper_set_suspend(&cdev->mode_info.gfbdev->helper, 1);
 		console_unlock();
 	}
 
@@ -109,7 +109,7 @@ static int cirrus_pm_resume(struct device *dev)
 
 	if (cdev->mode_info.gfbdev) {
 		console_lock();
-		fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 0);
+		drm_fb_helper_set_suspend(&cdev->mode_info.gfbdev->helper, 0);
 		console_unlock();
 	}
 

drivers/gpu/drm/cirrus/cirrus_fbdev.c

@@ -98,7 +98,7 @@ static void cirrus_fillrect(struct fb_info *info,
 			 const struct fb_fillrect *rect)
 {
 	struct cirrus_fbdev *afbdev = info->par;
-	sys_fillrect(info, rect);
+	drm_fb_helper_sys_fillrect(info, rect);
 	cirrus_dirty_update(afbdev, rect->dx, rect->dy, rect->width,
 			 rect->height);
 }
@@ -107,7 +107,7 @@ static void cirrus_copyarea(struct fb_info *info,
 			 const struct fb_copyarea *area)
 {
 	struct cirrus_fbdev *afbdev = info->par;
-	sys_copyarea(info, area);
+	drm_fb_helper_sys_copyarea(info, area);
 	cirrus_dirty_update(afbdev, area->dx, area->dy, area->width,
 			 area->height);
 }
@@ -116,7 +116,7 @@ static void cirrus_imageblit(struct fb_info *info,
 			  const struct fb_image *image)
 {
 	struct cirrus_fbdev *afbdev = info->par;
-	sys_imageblit(info, image);
+	drm_fb_helper_sys_imageblit(info, image);
 	cirrus_dirty_update(afbdev, image->dx, image->dy, image->width,
 			 image->height);
 }
@@ -165,12 +165,10 @@ static int cirrusfb_create(struct drm_fb_helper *helper,
 {
 	struct cirrus_fbdev *gfbdev =
 		container_of(helper, struct cirrus_fbdev, helper);
-	struct drm_device *dev = gfbdev->helper.dev;
 	struct cirrus_device *cdev = gfbdev->helper.dev->dev_private;
 	struct fb_info *info;
 	struct drm_framebuffer *fb;
 	struct drm_mode_fb_cmd2 mode_cmd;
-	struct device *device = &dev->pdev->dev;
 	void *sysram;
 	struct drm_gem_object *gobj = NULL;
 	struct cirrus_bo *bo = NULL;
@@ -195,9 +193,9 @@ static int cirrusfb_create(struct drm_fb_helper *helper,
 	if (!sysram)
 		return -ENOMEM;
 
-	info = framebuffer_alloc(0, device);
-	if (info == NULL)
-		return -ENOMEM;
+	info = drm_fb_helper_alloc_fbi(helper);
+	if (IS_ERR(info))
+		return PTR_ERR(info);
 
 	info->par = gfbdev;
 
@@ -216,11 +214,9 @@ static int cirrusfb_create(struct drm_fb_helper *helper,
 
 	/* setup helper */
 	gfbdev->helper.fb = fb;
-	gfbdev->helper.fbdev = info;
 
 	strcpy(info->fix.id, "cirrusdrmfb");
 
-
 	info->flags = FBINFO_DEFAULT;
 	info->fbops = &cirrusfb_ops;
 
@@ -229,11 +225,6 @@ static int cirrusfb_create(struct drm_fb_helper *helper,
 			       sizes->fb_height);
 
 	/* setup aperture base/size for vesafb takeover */
-	info->apertures = alloc_apertures(1);
-	if (!info->apertures) {
-		ret = -ENOMEM;
-		goto out_iounmap;
-	}
 	info->apertures->ranges[0].base = cdev->dev->mode_config.fb_base;
 	info->apertures->ranges[0].size = cdev->mc.vram_size;
 
@@ -246,13 +237,6 @@ static int cirrusfb_create(struct drm_fb_helper *helper,
 	info->fix.mmio_start = 0;
 	info->fix.mmio_len = 0;
 
-	ret = fb_alloc_cmap(&info->cmap, 256, 0);
-	if (ret) {
-		DRM_ERROR("%s: can't allocate color map\n", info->fix.id);
-		ret = -ENOMEM;
-		goto out_iounmap;
-	}
-
 	DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start);
 	DRM_INFO("vram aper at 0x%lX\n", (unsigned long)info->fix.smem_start);
 	DRM_INFO("size %lu\n", (unsigned long)info->fix.smem_len);
@@ -260,24 +244,15 @@ static int cirrusfb_create(struct drm_fb_helper *helper,
 	DRM_INFO("   pitch is %d\n", fb->pitches[0]);
 
 	return 0;
-out_iounmap:
-	return ret;
 }
 
 static int cirrus_fbdev_destroy(struct drm_device *dev,
 				struct cirrus_fbdev *gfbdev)
 {
-	struct fb_info *info;
 	struct cirrus_framebuffer *gfb = &gfbdev->gfb;
 
-	if (gfbdev->helper.fbdev) {
-		info = gfbdev->helper.fbdev;
-
-		unregister_framebuffer(info);
-		if (info->cmap.len)
-			fb_dealloc_cmap(&info->cmap);
-		framebuffer_release(info);
-	}
+	drm_fb_helper_unregister_fbi(&gfbdev->helper);
+	drm_fb_helper_release_fbi(&gfbdev->helper);
 
 	if (gfb->obj) {
 		drm_gem_object_unreference_unlocked(gfb->obj);