diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/display/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/display/drm_hdmi_state_helper.c | 57 |
2 files changed, 58 insertions, 0 deletions
diff --git a/drivers/gpu/drm/display/Kconfig b/drivers/gpu/drm/display/Kconfig index 2619fa2476eb..8d22b7627d41 100644 --- a/drivers/gpu/drm/display/Kconfig +++ b/drivers/gpu/drm/display/Kconfig @@ -89,6 +89,7 @@ config DRM_DISPLAY_HDMI_HELPER config DRM_DISPLAY_HDMI_STATE_HELPER bool + select DRM_DISPLAY_HDMI_AUDIO_HELPER select DRM_DISPLAY_HDMI_HELPER help DRM KMS state helpers for HDMI. diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c index d678c635a693..cfc2aaee1da0 100644 --- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c @@ -5,6 +5,7 @@ #include <drm/drm_edid.h> #include <drm/drm_print.h> +#include <drm/display/drm_hdmi_audio_helper.h> #include <drm/display/drm_hdmi_helper.h> #include <drm/display/drm_hdmi_state_helper.h> @@ -777,3 +778,59 @@ drm_atomic_helper_connector_hdmi_clear_audio_infoframe(struct drm_connector *con return ret; } EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_clear_audio_infoframe); + +static void +drm_atomic_helper_connector_hdmi_update(struct drm_connector *connector, + enum drm_connector_status status) +{ + const struct drm_edid *drm_edid; + + if (status == connector_status_disconnected) { + // TODO: also handle CEC and scramber, HDMI sink disconnected. + drm_connector_hdmi_audio_plugged_notify(connector, false); + } + + if (connector->hdmi.funcs->read_edid) + drm_edid = connector->hdmi.funcs->read_edid(connector); + else + drm_edid = drm_edid_read(connector); + + drm_edid_connector_update(connector, drm_edid); + + drm_edid_free(drm_edid); + + if (status == connector_status_connected) { + // TODO: also handle CEC and scramber, HDMI sink is now connected. + drm_connector_hdmi_audio_plugged_notify(connector, true); + } +} + +/** + * drm_atomic_helper_connector_hdmi_hotplug - Handle the hotplug event for the HDMI connector + * @connector: A pointer to the HDMI connector + * @status: Connection status + * + * This function should be called as a part of the .detect() / .detect_ctx() + * callbacks, updating the HDMI-specific connector's data. + */ +void drm_atomic_helper_connector_hdmi_hotplug(struct drm_connector *connector, + enum drm_connector_status status) +{ + drm_atomic_helper_connector_hdmi_update(connector, status); +} +EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_hotplug); + +/** + * drm_atomic_helper_connector_hdmi_force - HDMI Connector implementation of the force callback + * @connector: A pointer to the HDMI connector + * + * This function implements the .force() callback for the HDMI connectors. It + * can either be used directly as the callback or should be called from within + * the .force() callback implementation to maintain the HDMI-specific + * connector's data. + */ +void drm_atomic_helper_connector_hdmi_force(struct drm_connector *connector) +{ + drm_atomic_helper_connector_hdmi_update(connector, connector->status); +} +EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_force); |