From 1b6e2fd2896a707ccb480939d127c621308d403e Mon Sep 17 00:00:00 2001
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Date: Tue, 29 Aug 2017 16:22:23 -0700
Subject: [PATCH] drm/i915: Introduce intel_ddi_dp_level.
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Git-commit: 1b6e2fd2896a707ccb480939d127c621308d403e
Patch-mainline: v4.15-rc1
References: FATE#322643 bsc#1055900
No functional changes. This only moves the DP level
selection to a separated function that will be later
used to organize better the vswing sequences.
Cc: Ville Syrj채l채 <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Ville Syrj채l채 <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170829232230.23051-1-rodrigo.vivi@intel.com
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/intel_ddi.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2055,18 +2055,22 @@ static uint32_t translate_signal_level(i
return 0;
}
+static uint32_t intel_ddi_dp_level(struct intel_dp *intel_dp)
+{
+ uint8_t train_set = intel_dp->train_set[0];
+ int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
+ DP_TRAIN_PRE_EMPHASIS_MASK);
+
+ return translate_signal_level(signal_levels);
+}
+
uint32_t ddi_signal_levels(struct intel_dp *intel_dp)
{
struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv = to_i915(dport->base.base.dev);
struct intel_encoder *encoder = &dport->base;
- uint8_t train_set = intel_dp->train_set[0];
- int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
- DP_TRAIN_PRE_EMPHASIS_MASK);
enum port port = dport->port;
- uint32_t level;
-
- level = translate_signal_level(signal_levels);
+ uint32_t level = intel_ddi_dp_level(intel_dp);
if (IS_GEN9_BC(dev_priv))
skl_ddi_set_iboost(encoder, level);