diff options
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_dp.c | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_connectors.c | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_mode.h | 1 |
3 files changed, 19 insertions, 8 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 645b84b3d203..7ad43c6b1db7 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -613,6 +613,18 @@ static bool radeon_dp_get_link_status(struct radeon_connector *radeon_connector, return true; } +bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector) +{ + u8 link_status[DP_LINK_STATUS_SIZE]; + struct radeon_connector_atom_dig *dig = radeon_connector->con_priv; + + if (!radeon_dp_get_link_status(radeon_connector, link_status)) + return false; + if (dp_channel_eq_ok(link_status, dig->dp_lane_count)) + return false; + return true; +} + struct radeon_dp_link_train_info { struct radeon_device *rdev; struct drm_encoder *encoder; diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index 519b5e2f1ee8..6ab6c414609b 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -64,18 +64,16 @@ void radeon_connector_hotplug(struct drm_connector *connector) if (connector->dpms != DRM_MODE_DPMS_ON) return; - /* powering up/down the eDP panel generates hpd events which - * can interfere with modesetting. - */ - if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) - return; + /* just deal with DP (not eDP) here. */ + if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { + int saved_dpms = connector->dpms; - /* pre-r600 did not always have the hpd pins mapped accurately to connectors */ - if (rdev->family >= CHIP_R600) { - if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) + if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd) && + radeon_dp_needs_link_train(radeon_connector)) drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON); else drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); + connector->dpms = saved_dpms; } } diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h index d09031c03e26..68820f5f6303 100644 --- a/drivers/gpu/drm/radeon/radeon_mode.h +++ b/drivers/gpu/drm/radeon/radeon_mode.h @@ -479,6 +479,7 @@ extern void radeon_dp_set_link_config(struct drm_connector *connector, struct drm_display_mode *mode); extern void radeon_dp_link_train(struct drm_encoder *encoder, struct drm_connector *connector); +extern bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector); extern u8 radeon_dp_getsinktype(struct radeon_connector *radeon_connector); extern bool radeon_dp_getdpcd(struct radeon_connector *radeon_connector); extern void atombios_dig_encoder_setup(struct drm_encoder *encoder, int action, int panel_mode); |