Add default action when .get_modes() not set. This also defines what a .get_modes() hook should do.
Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Signed-off-by: Jani Nikula jani.nikula@intel.com --- drivers/gpu/drm/drm_probe_helper.c | 14 +++++++++++++- include/drm/drm_modeset_helper_vtables.h | 4 ++++ 2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index 836bcd5b4cb6..9df17f0ae225 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -360,7 +360,19 @@ static int drm_helper_probe_get_modes(struct drm_connector *connector) connector->helper_private; int count;
- count = connector_funcs->get_modes(connector); + if (connector_funcs->get_modes) { + count = connector_funcs->get_modes(connector); + } else { + const struct drm_edid *drm_edid; + + /* Note: This requires connector->ddc is set */ + drm_edid = drm_edid_read(connector); + + /* Update modes etc. from the EDID */ + count = drm_edid_connector_update(connector, drm_edid); + + drm_edid_free(drm_edid); + }
/* * Fallback for when DDC probe failed in drm_get_edid() and thus skipped diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h index fafa70ac1337..b4402bc64e57 100644 --- a/include/drm/drm_modeset_helper_vtables.h +++ b/include/drm/drm_modeset_helper_vtables.h @@ -894,6 +894,10 @@ struct drm_connector_helper_funcs { * libraries always call this with the &drm_mode_config.connection_mutex * held. Because of this it's safe to inspect &drm_connector->state. * + * This callback is optional. By default, it reads the EDID using + * drm_edid_read() and updates the connector display info, modes, and + * properties using drm_edid_connector_update(). + * * RETURNS: * * The number of modes added by calling drm_mode_probed_add().