From 9314726b9f7329e223dd279819b42842ab7d413f Mon Sep 17 00:00:00 2001 From: Vandana Kannan Date: Tue, 18 Nov 2014 15:45:29 +0530 Subject: [PATCH] drm/i915/bxt: Update max level of vswing Broxton supports 3 voltage swing levels on all DP ports. Max level of pre-emphasis will be taken care with the existing code. v2: Patch rebased v3: (imre) - keep existing behavior for other platforms - clarify commit message Signed-off-by: Vandana Kannan (v2) Signed-off-by: Imre Deak Reviewed-by: Sivakumar Thulasimani Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_dp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 2e27b5215a36..aa13608d27ff 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -2887,7 +2887,9 @@ intel_dp_voltage_max(struct intel_dp *intel_dp) struct drm_i915_private *dev_priv = dev->dev_private; enum port port = dp_to_dig_port(intel_dp)->port; - if (INTEL_INFO(dev)->gen >= 9) { + if (IS_BROXTON(dev)) + return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; + else if (INTEL_INFO(dev)->gen >= 9) { if (dev_priv->vbt.edp_low_vswing && port == PORT_A) return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; -- 2.20.1