@@ -748,3 +748,62 @@ drm_atomic_helper_connector_hdmi_clear_audio_infoframe(struct drm_connector *con
return ret;
}
EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_clear_audio_infoframe);
+
+/**
+ * drm_atomic_helper_connector_hdmi_update_edid - Update the HDMI Connector basing on passed EDID
+ * @connector: A pointer to the HDMI connector
+ * @drm_edid: EDID to process
+ *
+ * This function should be called as a part of the .detect() / .detect_ctx()
+ * and .force() callbacks, updating the HDMI-specific connector's data. Most of
+ * the drivers should be able to use @drm_atomic_helper_connector_hdmi_update()
+ * instead.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int
+drm_atomic_helper_connector_hdmi_update_edid(struct drm_connector *connector,
+ const struct drm_edid *drm_edid)
+{
+ drm_edid_connector_update(connector, drm_edid);
+
+ if (!drm_edid) {
+ drm_connector_hdmi_codec_plugged_notify(connector, false);
+
+ // TODO: also handle CEC and scramber, HDMI sink disconnected.
+
+ return 0;
+ }
+
+ drm_connector_hdmi_codec_plugged_notify(connector, true);
+
+ // TODO: also handle CEC and scramber, HDMI sink is now connected.
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_update_edid);
+
+/**
+ * drm_atomic_helper_connector_hdmi_update - Update the HDMI Connector after reading the EDID
+ * @connector: A pointer to the HDMI connector
+ *
+ * This function should be called as a part of the .detect() / .detect_ctx()
+ * and .force() callbacks, updating the HDMI-specific connector's data.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int
+drm_atomic_helper_connector_hdmi_update(struct drm_connector *connector)
+{
+ const struct drm_edid *drm_edid;
+ int ret;
+
+ drm_edid = drm_edid_read(connector);
+ ret = drm_atomic_helper_connector_hdmi_update_edid(connector, drm_edid);
+ drm_edid_free(drm_edid);
+
+ return ret;
+}
+EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_update);
@@ -6,6 +6,7 @@
struct drm_atomic_state;
struct drm_connector;
struct drm_connector_state;
+struct drm_edid;
struct hdmi_audio_infoframe;
void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
@@ -20,4 +21,8 @@ int drm_atomic_helper_connector_hdmi_clear_audio_infoframe(struct drm_connector
int drm_atomic_helper_connector_hdmi_update_infoframes(struct drm_connector *connector,
struct drm_atomic_state *state);
+int drm_atomic_helper_connector_hdmi_update_edid(struct drm_connector *connector,
+ const struct drm_edid *drm_edid);
+int drm_atomic_helper_connector_hdmi_update(struct drm_connector *connector);
+
#endif // DRM_HDMI_STATE_HELPER_H_
The HDMI Connectors need to perform a variety of tasks when the HDMI connector state changes. Such tasks include setting or invalidating CEC address, notifying HDMI codec driver, updating scrambler data, etc. Implementing such tasks in a driver-specific callbacks is error prone. Start implementing the generic helper function (currently handling only the HDMI Codec framework) to be used by driver utilizing HDMI Connector framework. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> --- drivers/gpu/drm/display/drm_hdmi_state_helper.c | 59 +++++++++++++++++++++++++ include/drm/display/drm_hdmi_state_helper.h | 5 +++ 2 files changed, 64 insertions(+)