diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-02-23 20:49:01 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-02-24 15:45:50 +0300 |
| commit | ffe5111e28e52212040db1617a75035d6d6f9447 (patch) | |
| tree | c0cfa733974261cdbb3ca13ed598cdf5b3f1c625 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | 97eeb872764ce524d87d0e0e9e25b1c9fae10b3a (diff) | |
| download | linux-ffe5111e28e52212040db1617a75035d6d6f9447.tar.xz | |
drm/i915: Introduce intel_ddi_dp_voltage_max()
Rather than sprinkling ideas of how big the DDI buf translation tables
are somewhere in intel_dp.c, let's concentrate it all in intel_ddi.c
where the actual tables are defined. To that end we introduce
intel_ddi_dp_voltage_max() which will actually look at the proper
translation table to determine what is the maximum voltage swing level
supported.
v2: Mask out the preemphasis bits from the return value of
intel_ddi_dp_voltage_max()
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170223174901.26749-1-ville.syrjala@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 024798a9c016..e72c92a08c81 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -3098,9 +3098,8 @@ intel_dp_voltage_max(struct intel_dp *intel_dp) if (IS_GEN9_LP(dev_priv)) return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; else if (INTEL_GEN(dev_priv) >= 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; + struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; + return intel_ddi_dp_voltage_max(encoder); } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; else if (IS_GEN7(dev_priv) && port == PORT_A) |