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drm/radeon/kms: properly set panel mode for eDP

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This should make eDP more reliable.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2011-10-31 08:54:41 -04:00
committed by Dave Airlie
parent 06c9c2332c
commit 00dfb8df5b
2 changed files with 14 additions and 0 deletions
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11
drivers/gpu/drm/radeon/atombios_dp.c
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@@ -553,6 +553,7 @@ static void radeon_dp_set_panel_mode(struct drm_encoder *encoder,
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
int panel_mode = DP_PANEL_MODE_EXTERNAL_DP_MODE;
if (!ASIC_IS_DCE4(rdev))
@@ -560,10 +561,20 @@ static void radeon_dp_set_panel_mode(struct drm_encoder *encoder,
if (radeon_connector_encoder_is_dp_bridge(connector))
panel_mode = DP_PANEL_MODE_INTERNAL_DP1_MODE;
else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
u8 tmp = radeon_read_dpcd_reg(radeon_connector, DP_EDP_CONFIGURATION_CAP);
if (tmp & 1)
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
}
atombios_dig_encoder_setup(encoder,
ATOM_ENCODER_CMD_SETUP_PANEL_MODE,
panel_mode);
if ((connector->connector_type == DRM_MODE_CONNECTOR_eDP) &&
(panel_mode == DP_PANEL_MODE_INTERNAL_DP2_MODE)) {
radeon_write_dpcd_reg(radeon_connector, DP_EDP_CONFIGURATION_SET, 1);
}
}
void radeon_dp_set_link_config(struct drm_connector *connector,