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| author | Vandana Kannan <vandana.kannan@intel.com> | 2014-11-18 15:45:29 +0530 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-04-16 11:42:40 +0200 |
| commit | 9314726b9f7329e223dd279819b42842ab7d413f (patch) | |
| tree | f9eca76c9ed44e6b471b4288c510ad7186cb6b22 /drivers | |
| parent | 96fb9f9b154a8dbfe1f74c384cd82f73539fda93 (diff) | |
| download | lwn-9314726b9f7329e223dd279819b42842ab7d413f.tar.gz lwn-9314726b9f7329e223dd279819b42842ab7d413f.zip | |
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 <vandana.kannan@intel.com> (v2)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 4 |
1 files changed, 3 insertions, 1 deletions
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; |