diff options
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 3007b44e6bf4..160647a1c584 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1289,6 +1289,29 @@ unsigned int drm_plane_index(struct drm_plane *plane) EXPORT_SYMBOL(drm_plane_index); /** + * drm_plane_from_index - find the registered plane at an index + * @dev: DRM device + * @idx: index of registered plane to find for + * + * Given a plane index, return the registered plane from DRM device's + * list of planes with matching index. + */ +struct drm_plane * +drm_plane_from_index(struct drm_device *dev, int idx) +{ + struct drm_plane *plane; + unsigned int i = 0; + + list_for_each_entry(plane, &dev->mode_config.plane_list, head) { + if (i == idx) + return plane; + i++; + } + return NULL; +} +EXPORT_SYMBOL(drm_plane_from_index); + +/** * drm_plane_force_disable - Forcibly disable a plane * @plane: plane to disable * |