diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_tc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_tc.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c index f923f9cbd33c..7773169b7331 100644 --- a/drivers/gpu/drm/i915/display/intel_tc.c +++ b/drivers/gpu/drm/i915/display/intel_tc.c @@ -67,6 +67,21 @@ u32 intel_tc_port_get_lane_mask(struct intel_digital_port *dig_port) return lane_mask >> DP_LANE_ASSIGNMENT_SHIFT(dig_port->tc_phy_fia_idx); } +u32 intel_tc_port_get_pin_assignment_mask(struct intel_digital_port *dig_port) +{ + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); + struct intel_uncore *uncore = &i915->uncore; + u32 pin_mask; + + pin_mask = intel_uncore_read(uncore, + PORT_TX_DFLEXPA1(dig_port->tc_phy_fia)); + + WARN_ON(pin_mask == 0xffffffff); + + return (pin_mask & DP_PIN_ASSIGNMENT_MASK(dig_port->tc_phy_fia_idx)) >> + DP_PIN_ASSIGNMENT_SHIFT(dig_port->tc_phy_fia_idx); +} + int intel_tc_port_fia_max_lane_count(struct intel_digital_port *dig_port) { struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); |