From: Daniel Vetter Date: Tue, 23 Oct 2012 18:23:35 +0000 (+0000) Subject: drm: properly init/reset connector status X-Git-Tag: v3.8-rc1~42^2~174 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5e2cb2f6da72323877e5847512f8bd8d53c532f2;p=platform%2Fkernel%2Flinux-exynos.git drm: properly init/reset connector status This can help drivers to make somewhat intelligent decisions in their ->detect callback: If the connector is hpd capable and in the unknown state, the driver needs to force a full detect cycle. Otherwise it could just (if it chooses so) to update the connector state from it's hpd handler directly, and always return that in the ->detect callback. Atm only drm/i915 calls drm_mode_config_reset at resume time, so other drivers would need to add that call first before using this facility. Signed-off-by: Daniel Vetter Reviewed-by: Alex Deucher Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 6a1b2cc..d6d0072 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -553,6 +553,7 @@ int drm_connector_init(struct drm_device *dev, INIT_LIST_HEAD(&connector->probed_modes); INIT_LIST_HEAD(&connector->modes); connector->edid_blob_ptr = NULL; + connector->status = connector_status_unknown; list_add_tail(&connector->head, &dev->mode_config.connector_list); dev->mode_config.num_connector++; @@ -3672,9 +3673,12 @@ void drm_mode_config_reset(struct drm_device *dev) if (encoder->funcs->reset) encoder->funcs->reset(encoder); - list_for_each_entry(connector, &dev->mode_config.connector_list, head) + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + connector->status = connector_status_unknown; + if (connector->funcs->reset) connector->funcs->reset(connector); + } } EXPORT_SYMBOL(drm_mode_config_reset);