drm: Share plane pixel format check code between legacy and atomic

Both the legacy and atomic helpers need to check whether a plane
supports a given pixel format. The code is currently duplicated, share
it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[danvet: Slightly extend the docbook.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 7ca54cb..a6caaae 100644 (file)
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -475,7 +475,7 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
                struct drm_plane_state *state)
 {
        unsigned int fb_width, fb_height;
-       unsigned int i;
+       int ret;
 
        /* either *both* CRTC and FB must be set, or neither */
        if (WARN_ON(state->crtc && !state->fb)) {
@@ -497,13 +497,11 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
        }
 
        /* Check whether this plane supports the fb pixel format. */
-       for (i = 0; i < plane->format_count; i++)
-               if (state->fb->pixel_format == plane->format_types[i])
-                       break;
-       if (i == plane->format_count) {
+       ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format);
+       if (ret) {
                DRM_DEBUG_ATOMIC("Invalid pixel format %s\n",
                                 drm_get_format_name(state->fb->pixel_format));
-               return -EINVAL;
+               return ret;
        }
 
        /* Give drivers some help against integer overflows */

diff --cc drivers/gpu/drm/drm_crtc.c
Simple merge

diff --cc include/drm/drm_crtc.h
Simple merge