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drm/radeon: Properly handle DDC probe for DP bridges

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DDC information can be accessed using AUX CH

Fixes failure to probe monitors on some systems with
DP bridge chips.

agd5f: minor fixes

Signed-off-by: Niels Ole Salscheider <niels_ole@salscheider-online.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Niels Ole Salscheider
2013-01-03 19:09:28 +01:00
committed by Alex Deucher
parent 64c56e8ce3
commit 0a9069d349
4 changed files with 24 additions and 11 deletions
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13
drivers/gpu/drm/radeon/radeon_display.c
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@@ -699,10 +699,15 @@ int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
if (radeon_connector->router.ddc_valid)
radeon_router_select_ddc_port(radeon_connector);
if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
(radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) ||
(radeon_connector_encoder_get_dp_bridge_encoder_id(&radeon_connector->base) !=
ENCODER_OBJECT_ID_NONE)) {
if (radeon_connector_encoder_get_dp_bridge_encoder_id(&radeon_connector->base) !=
ENCODER_OBJECT_ID_NONE) {
struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
if (dig->dp_i2c_bus)
radeon_connector->edid = drm_get_edid(&radeon_connector->base,
&dig->dp_i2c_bus->adapter);
} else if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
(radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) {
struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT ||