diff options
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 7710bcb4bd8d..5e818a808ace 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -557,7 +557,8 @@ EXPORT_SYMBOL(drm_encoder_cleanup); int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, unsigned long possible_crtcs, const struct drm_plane_funcs *funcs, - const uint32_t *formats, uint32_t format_count) + const uint32_t *formats, uint32_t format_count, + bool priv) { mutex_lock(&dev->mode_config.mutex); @@ -577,8 +578,16 @@ int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, plane->format_count = format_count; plane->possible_crtcs = possible_crtcs; - list_add_tail(&plane->head, &dev->mode_config.plane_list); - dev->mode_config.num_plane++; + /* private planes are not exposed to userspace, but depending on + * display hardware, might be convenient to allow sharing programming + * for the scanout engine with the crtc implementation. + */ + if (!priv) { + list_add_tail(&plane->head, &dev->mode_config.plane_list); + dev->mode_config.num_plane++; + } else { + INIT_LIST_HEAD(&plane->head); + } mutex_unlock(&dev->mode_config.mutex); @@ -593,8 +602,11 @@ void drm_plane_cleanup(struct drm_plane *plane) mutex_lock(&dev->mode_config.mutex); kfree(plane->format_types); drm_mode_object_put(dev, &plane->base); - list_del(&plane->head); - dev->mode_config.num_plane--; + /* if not added to a list, it must be a private plane */ + if (!list_empty(&plane->head)) { + list_del(&plane->head); + dev->mode_config.num_plane--; + } mutex_unlock(&dev->mode_config.mutex); } EXPORT_SYMBOL(drm_plane_cleanup); |