From 00dfb8df5bf8c3afe4c0bb8361133156b06b7a2c Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 31 Oct 2011 08:54:41 -0400 Subject: drm/radeon/kms: properly set panel mode for eDP This should make eDP more reliable. Signed-off-by: Alex Deucher Cc: stable@kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/atombios_dp.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/gpu/drm/radeon/atombios_dp.c') diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 79e8ebc0530..b5628ce1228 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -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, -- cgit v1.2.2