drm/gem: Pass along the format info from .fb_create() to drm_helper_mode_fill_fb_struct()

Pass along the format info from .fb_create() to eliminate the
redundant drm_get_format_info() calls from the gem fb code.

v2: Fix kernel docs (Laurent)

Cc: Dave Airlie <[email protected]>
Cc: Gerd Hoffmann <[email protected]>
Cc: Sandy Huang <[email protected]>
Cc: "Heiko Stübner" <[email protected]>
Cc: Andy Yan <[email protected]>
Cc: Oleksandr Andrushchenko <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Laurent Pinchart <[email protected]>
Reviewed-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Signed-off-by: Ville Syrjälä <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: vsyrjala

drivers/gpu/drm/drm_gem_framebuffer_helper.c

@@ -68,14 +68,15 @@ EXPORT_SYMBOL_GPL(drm_gem_fb_get_obj);
 static int
 drm_gem_fb_init(struct drm_device *dev,
 		 struct drm_framebuffer *fb,
+		 const struct drm_format_info *info,
 		 const struct drm_mode_fb_cmd2 *mode_cmd,
 		 struct drm_gem_object **obj, unsigned int num_planes,
 		 const struct drm_framebuffer_funcs *funcs)
 {
 	unsigned int i;
 	int ret;
 
-	drm_helper_mode_fill_fb_struct(dev, fb, NULL, mode_cmd);
+	drm_helper_mode_fill_fb_struct(dev, fb, info, mode_cmd);
 
 	for (i = 0; i < num_planes; i++)
 		fb->obj[i] = obj[i];
@@ -136,6 +137,7 @@ EXPORT_SYMBOL(drm_gem_fb_create_handle);
  * @dev: DRM device
  * @fb: framebuffer object
  * @file: DRM file that holds the GEM handle(s) backing the framebuffer
+ * @info: pixel format information
  * @mode_cmd: Metadata from the userspace framebuffer creation request
  * @funcs: vtable to be used for the new framebuffer object
  *
@@ -152,21 +154,14 @@ EXPORT_SYMBOL(drm_gem_fb_create_handle);
 int drm_gem_fb_init_with_funcs(struct drm_device *dev,
 			       struct drm_framebuffer *fb,
 			       struct drm_file *file,
+			       const struct drm_format_info *info,
 			       const struct drm_mode_fb_cmd2 *mode_cmd,
 			       const struct drm_framebuffer_funcs *funcs)
 {
-	const struct drm_format_info *info;
 	struct drm_gem_object *objs[DRM_FORMAT_MAX_PLANES];
 	unsigned int i;
 	int ret;
 
-	info = drm_get_format_info(dev, mode_cmd->pixel_format,
-				   mode_cmd->modifier[0]);
-	if (!info) {
-		drm_dbg_kms(dev, "Failed to get FB format info\n");
-		return -EINVAL;
-	}
-
 	if (drm_drv_uses_atomic_modeset(dev) &&
 	    !drm_any_plane_has_format(dev, mode_cmd->pixel_format,
 				      mode_cmd->modifier[0])) {
@@ -201,7 +196,7 @@ int drm_gem_fb_init_with_funcs(struct drm_device *dev,
 		}
 	}
 
-	ret = drm_gem_fb_init(dev, fb, mode_cmd, objs, i, funcs);
+	ret = drm_gem_fb_init(dev, fb, info, mode_cmd, objs, i, funcs);
 	if (ret)
 		goto err_gem_object_put;
 
@@ -222,6 +217,7 @@ EXPORT_SYMBOL_GPL(drm_gem_fb_init_with_funcs);
  *                                  callback
  * @dev: DRM device
  * @file: DRM file that holds the GEM handle(s) backing the framebuffer
+ * @info: pixel format information
  * @mode_cmd: Metadata from the userspace framebuffer creation request
  * @funcs: vtable to be used for the new framebuffer object
  *
@@ -234,6 +230,7 @@ EXPORT_SYMBOL_GPL(drm_gem_fb_init_with_funcs);
  */
 struct drm_framebuffer *
 drm_gem_fb_create_with_funcs(struct drm_device *dev, struct drm_file *file,
+			     const struct drm_format_info *info,
 			     const struct drm_mode_fb_cmd2 *mode_cmd,
 			     const struct drm_framebuffer_funcs *funcs)
 {
@@ -244,7 +241,7 @@ drm_gem_fb_create_with_funcs(struct drm_device *dev, struct drm_file *file,
 	if (!fb)
 		return ERR_PTR(-ENOMEM);
 
-	ret = drm_gem_fb_init_with_funcs(dev, fb, file, mode_cmd, funcs);
+	ret = drm_gem_fb_init_with_funcs(dev, fb, file, info, mode_cmd, funcs);
 	if (ret) {
 		kfree(fb);
 		return ERR_PTR(ret);
@@ -287,7 +284,7 @@ drm_gem_fb_create(struct drm_device *dev, struct drm_file *file,
 		  const struct drm_format_info *info,
 		  const struct drm_mode_fb_cmd2 *mode_cmd)
 {
-	return drm_gem_fb_create_with_funcs(dev, file, mode_cmd,
+	return drm_gem_fb_create_with_funcs(dev, file, info, mode_cmd,
 					    &drm_gem_fb_funcs);
 }
 EXPORT_SYMBOL_GPL(drm_gem_fb_create);
@@ -327,7 +324,7 @@ drm_gem_fb_create_with_dirty(struct drm_device *dev, struct drm_file *file,
 			     const struct drm_format_info *info,
 			     const struct drm_mode_fb_cmd2 *mode_cmd)
 {
-	return drm_gem_fb_create_with_funcs(dev, file, mode_cmd,
+	return drm_gem_fb_create_with_funcs(dev, file, info, mode_cmd,
 					    &drm_gem_fb_funcs_dirtyfb);
 }
 EXPORT_SYMBOL_GPL(drm_gem_fb_create_with_dirty);

drivers/gpu/drm/qxl/qxl_display.c

@@ -1179,7 +1179,7 @@ qxl_user_framebuffer_create(struct drm_device *dev,
 			    const struct drm_format_info *info,
 			    const struct drm_mode_fb_cmd2 *mode_cmd)
 {
-	return drm_gem_fb_create_with_funcs(dev, file_priv, mode_cmd,
+	return drm_gem_fb_create_with_funcs(dev, file_priv, info, mode_cmd,
 					    &qxl_fb_funcs);
 }
 

drivers/gpu/drm/rockchip/rockchip_drm_fb.c

@@ -40,7 +40,8 @@ rockchip_fb_create(struct drm_device *dev, struct drm_file *file,
 	if (!afbc_fb)
 		return ERR_PTR(-ENOMEM);
 
-	ret = drm_gem_fb_init_with_funcs(dev, &afbc_fb->base, file, mode_cmd,
+	ret = drm_gem_fb_init_with_funcs(dev, &afbc_fb->base,
+					 file, info, mode_cmd,
 					 &rockchip_drm_fb_funcs);
 	if (ret) {
 		kfree(afbc_fb);

drivers/gpu/drm/xen/xen_drm_front_kms.c

@@ -62,7 +62,7 @@ fb_create(struct drm_device *dev, struct drm_file *filp,
 	struct drm_gem_object *gem_obj;
 	int ret;
 
-	fb = drm_gem_fb_create_with_funcs(dev, filp, mode_cmd, &fb_funcs);
+	fb = drm_gem_fb_create_with_funcs(dev, filp, info, mode_cmd, &fb_funcs);
 	if (IS_ERR(fb))
 		return fb;
 

include/drm/drm_gem_framebuffer_helper.h

@@ -25,10 +25,12 @@ int drm_gem_fb_create_handle(struct drm_framebuffer *fb, struct drm_file *file,
 int drm_gem_fb_init_with_funcs(struct drm_device *dev,
 			       struct drm_framebuffer *fb,
 			       struct drm_file *file,
+			       const struct drm_format_info *info,
 			       const struct drm_mode_fb_cmd2 *mode_cmd,
 			       const struct drm_framebuffer_funcs *funcs);
 struct drm_framebuffer *
 drm_gem_fb_create_with_funcs(struct drm_device *dev, struct drm_file *file,
+			     const struct drm_format_info *info,
 			     const struct drm_mode_fb_cmd2 *mode_cmd,
 			     const struct drm_framebuffer_funcs *funcs);
 struct drm_framebuffer *