The function intel_dp_voltage_max() returns either voltage swing level 2
or level 3 for a few special cases. Simplify the if ladder by grouping
the few special cases that cause it return level 3. Make it clearer that
level 2 is the default by putting it out of the else condition.
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dp.c | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index b785f1f..3fa8a55 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3066,20 +3066,17 @@ 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 (IS_BROXTON(dev))
+ if (IS_BROXTON(dev) || IS_VALLEYVIEW(dev))
return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
- else if (INTEL_INFO(dev)->gen >= 9) {
- if (dev_priv->edp_low_vswing && port == PORT_A)
- return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
- return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
- } else if (IS_VALLEYVIEW(dev))
+
+ if (INTEL_INFO(dev)->gen >= 9 &&
+ dev_priv->edp_low_vswing && port == PORT_A)
return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
- else if (IS_GEN7(dev) && port == PORT_A)
- return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
- else if (HAS_PCH_CPT(dev) && port != PORT_A)
+
+ if (HAS_PCH_CPT(dev) && port != PORT_A)
return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
- else
- return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
+
+ return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
}
uint8_t
--
2.4.3
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