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-rw-r--r--include/drm/drm_crtc.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index fb96727..e0170bf 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -1597,6 +1597,8 @@ struct drm_bridge_funcs {
*
* The bridge can assume that the display pipe (i.e. clocks and timing
* signals) feeding it is still running when this callback is called.
+ *
+ * The disable callback is optional.
*/
void (*disable)(struct drm_bridge *bridge);
@@ -1613,6 +1615,8 @@ struct drm_bridge_funcs {
* The bridge must assume that the display pipe (i.e. clocks and timing
* singals) feeding it is no longer running when this callback is
* called.
+ *
+ * The post_disable callback is optional.
*/
void (*post_disable)(struct drm_bridge *bridge);
@@ -1641,6 +1645,8 @@ struct drm_bridge_funcs {
* will not yet be running when this callback is called. The bridge must
* not enable the display link feeding the next bridge in the chain (if
* there is one) when this callback is called.
+ *
+ * The pre_enable callback is optional.
*/
void (*pre_enable)(struct drm_bridge *bridge);
@@ -1658,6 +1664,8 @@ struct drm_bridge_funcs {
* signals) feeding it is running when this callback is called. This
* callback must enable the display link feeding the next bridge in the
* chain if there is one.
+ *
+ * The enable callback is optional.
*/
void (*enable)(struct drm_bridge *bridge);
};
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