If VBT states that it uses an alternate aux for port E,
let's use it since even on new platforms there is no
dedicated aux for port E and it is being used for VGA
with DP-to-VGA converter by some OEMs.
Let's assume that port A is in use for eDP so let's
keep the default to port D to minimize the changes
on the behaviour.
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.v...@intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 2d42d09428c9..c856567d4529 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5905,6 +5905,9 @@ intel_dp_init_connector_port_info(struct
intel_digital_port *intel_dig_port)
{
struct intel_encoder *encoder = &intel_dig_port->base;
struct intel_dp *intel_dp = &intel_dig_port->dp;
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ const struct ddi_vbt_port_info *info =
+ &dev_priv->vbt.ddi_port_info[intel_dig_port->port];
switch (intel_dig_port->port) {
case PORT_A:
@@ -5925,9 +5928,9 @@ intel_dp_init_connector_port_info(struct
intel_digital_port *intel_dig_port)
break;
case PORT_E:
encoder->hpd_pin = HPD_PORT_E;
-
- /* FIXME: Check VBT for actual wiring of PORT E */
- intel_dp->aux_power_domain = POWER_DOMAIN_AUX_D;
+ intel_dp->aux_power_domain = POWER_DOMAIN_AUX_A +
+ info->alternate_aux_channel ?
+ info->alternate_aux_channel : POWER_DOMAIN_AUX_D;
break;
default:
MISSING_CASE(intel_dig_port->port);
--
2.13.2
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