diff options
| author | Jerome Glisse <jglisse@redhat.com> | 2012-07-19 17:15:56 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-07-25 14:14:07 +1000 |
| commit | 266dcba541a1ef7e5d82d9e67c67fde2910636e8 (patch) | |
| tree | 8a46a5b8e6c94f0c22f1edf5d5db30688353e70a /drivers/gpu/drm/radeon/radeon_connectors.c | |
| parent | 8d1c702aa0b2c4b22b0742b72a1149d91690674b (diff) | |
| download | linux-266dcba541a1ef7e5d82d9e67c67fde2910636e8.tar.gz | |
drm/radeon: fix hotplug of DP to DVI|HDMI passive adapters (v2)
No need to retrain the link for passive adapters.
v2: agd5f
- no passive DP to VGA adapters, update comments
- assign radeon_connector_atom_dig after we are sure
we have a digital connector as analog connectors
have different private data.
- get new sink type before checking for retrain. No
need to check if it's no longer a DP connection.
Cc: <stable@vger.kernel.org>
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_connectors.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_connectors.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index 2914c5761cfc..3524f17e3f05 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -64,14 +64,27 @@ void radeon_connector_hotplug(struct drm_connector *connector) /* just deal with DP (not eDP) here. */ if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { - int saved_dpms = connector->dpms; - - /* Only turn off the display it it's physically disconnected */ - if (!radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) - drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); - else if (radeon_dp_needs_link_train(radeon_connector)) - drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON); - connector->dpms = saved_dpms; + struct radeon_connector_atom_dig *dig_connector = + radeon_connector->con_priv; + + /* if existing sink type was not DP no need to retrain */ + if (dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_DISPLAYPORT) + return; + + /* first get sink type as it may be reset after (un)plug */ + dig_connector->dp_sink_type = radeon_dp_getsinktype(radeon_connector); + /* don't do anything if sink is not display port, i.e., + * passive dp->(dvi|hdmi) adaptor + */ + if (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) { + int saved_dpms = connector->dpms; + /* Only turn off the display if it's physically disconnected */ + if (!radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) + drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); + else if (radeon_dp_needs_link_train(radeon_connector)) + drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON); + connector->dpms = saved_dpms; + } } } |