drm/hisilicon/hibmc: Implement hibmc_dumb_create() with generic helpers

The hibmc driver aligns scanlines to 16 bytes. By using the new pitch_align
argument of drm_gem_vram_fill_create_dumb(), convert hibmc over.

v2:
	* move changes to VRAM helpers into separate patch
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203083819.6643-5-tzimmermann@suse.de

drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h

@@ -18,7 +18,6 @@
 #include <drm/drm_framebuffer.h>
 
 struct drm_device;
-struct drm_gem_object;
 
 struct hibmc_drm_private {
 	/* hw */
@@ -41,9 +40,6 @@ void hibmc_set_current_gate(struct hibmc_drm_private *priv,
 int hibmc_de_init(struct hibmc_drm_private *priv);
 int hibmc_vdac_init(struct hibmc_drm_private *priv);
 
-int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
-		     struct drm_gem_object **obj);
-
 int hibmc_mm_init(struct hibmc_drm_private *hibmc);
 void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
 int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,

drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c

@@ -47,55 +47,11 @@ void hibmc_mm_fini(struct hibmc_drm_private *hibmc)
 	drm_vram_helper_release_mm(hibmc->dev);
 }
 
-int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
-		     struct drm_gem_object **obj)
-{
-	struct drm_gem_vram_object *gbo;
-	int ret;
-
-	*obj = NULL;
-
-	size = roundup(size, PAGE_SIZE);
-	if (size == 0)
-		return -EINVAL;
-
-	gbo = drm_gem_vram_create(dev, &dev->vram_mm->bdev, size, 0, false);
-	if (IS_ERR(gbo)) {
-		ret = PTR_ERR(gbo);
-		if (ret != -ERESTARTSYS)
-			DRM_ERROR("failed to allocate GEM object: %d\n", ret);
-		return ret;
-	}
-	*obj = &gbo->bo.base;
-	return 0;
-}
-
 int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
 		      struct drm_mode_create_dumb *args)
 {
-	struct drm_gem_object *gobj;
-	u32 handle;
-	int ret;
-
-	args->pitch = ALIGN(args->width * DIV_ROUND_UP(args->bpp, 8), 16);
-	args->size = args->pitch * args->height;
-
-	ret = hibmc_gem_create(dev, args->size, false,
-			       &gobj);
-	if (ret) {
-		DRM_ERROR("failed to create GEM object: %d\n", ret);
-		return ret;
-	}
-
-	ret = drm_gem_handle_create(file, gobj, &handle);
-	drm_gem_object_put_unlocked(gobj);
-	if (ret) {
-		DRM_ERROR("failed to unreference GEM object: %d\n", ret);
-		return ret;
-	}
-
-	args->handle = handle;
-	return 0;
+	return drm_gem_vram_fill_create_dumb(file, dev, &dev->vram_mm->bdev,
+					     0, 16, false, args);
 }
 
 const struct drm_mode_config_funcs hibmc_mode_funcs = {