From: Ville Syrjälä <ville.syrj...@linux.intel.com>
Remove the sink vs. source limit mess from intel_dp_max_link_bw() and
just move the source restriction checks to intel_dp_source_rates().
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 22 ++++++++--------------
1 file changed, 8 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index aa373a2..61538f4 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -126,19 +126,11 @@ int
intel_dp_max_link_bw(struct intel_dp *intel_dp)
{
int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE];
- struct drm_device *dev = intel_dp->attached_connector->base.dev;
switch (max_link_bw) {
case DP_LINK_BW_1_62:
case DP_LINK_BW_2_7:
- break;
- case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */
- if (((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) ||
- INTEL_INFO(dev)->gen >= 8) &&
- intel_dp->dpcd[DP_DPCD_REV] >= 0x12)
- max_link_bw = DP_LINK_BW_5_4;
- else
- max_link_bw = DP_LINK_BW_2_7;
+ case DP_LINK_BW_5_4:
break;
default:
WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n",
@@ -1151,10 +1143,8 @@ intel_dp_sink_rates(struct intel_dp *intel_dp, const int
**sink_rates)
}
static int
-intel_dp_source_rates(struct intel_dp *intel_dp, const int **source_rates)
+intel_dp_source_rates(struct drm_device *dev, const int **source_rates)
{
- struct drm_device *dev = intel_dp_to_dev(intel_dp);
-
if (INTEL_INFO(dev)->gen >= 9) {
*source_rates = gen9_rates;
return ARRAY_SIZE(gen9_rates);
@@ -1162,7 +1152,11 @@ intel_dp_source_rates(struct intel_dp *intel_dp, const
int **source_rates)
*source_rates = default_rates;
- return (intel_dp_max_link_bw(intel_dp) >> 3) + 1;
+ if (INTEL_INFO(dev)->gen >= 8 ||
+ (IS_HASWELL(dev) && !IS_HSW_ULX(dev)))
+ return (DP_LINK_BW_5_4 >> 3) + 1;
+ else
+ return (DP_LINK_BW_2_7 >> 3) + 1;
}
static void
@@ -1256,7 +1250,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
sink_len = intel_dp_sink_rates(intel_dp, &sink_rates);
- source_len = intel_dp_source_rates(intel_dp, &source_rates);
+ source_len = intel_dp_source_rates(dev, &source_rates);
supported_len = intel_supported_rates(source_rates, source_len,
sink_rates, sink_len, supported_rates);
--
2.0.5
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