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path: root/drivers/gpu/drm/i915/intel_dp.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
-rw-r--r--drivers/gpu/drm/i915/intel_dp.c33
1 files changed, 19 insertions, 14 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index cd0f649b57a5..1193202766a2 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4160,18 +4160,6 @@ intel_dp_needs_link_retrain(struct intel_dp *intel_dp)
return !drm_dp_channel_eq_ok(link_status, intel_dp->lane_count);
}
-/*
- * If display is now connected check links status,
- * there has been known issues of link loss triggering
- * long pulse.
- *
- * Some sinks (eg. ASUS PB287Q) seem to perform some
- * weird HPD ping pong during modesets. So we can apparently
- * end up with HPD going low during a modeset, and then
- * going back up soon after. And once that happens we must
- * retrain the link to get a picture. That's in case no
- * userspace component reacted to intermittent HPD dip.
- */
int intel_dp_retrain_link(struct intel_encoder *encoder,
struct drm_modeset_acquire_ctx *ctx)
{
@@ -4661,7 +4649,8 @@ intel_dp_unset_edid(struct intel_dp *intel_dp)
}
static int
-intel_dp_long_pulse(struct intel_connector *connector)
+intel_dp_long_pulse(struct intel_connector *connector,
+ struct drm_modeset_acquire_ctx *ctx)
{
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
struct intel_dp *intel_dp = intel_attached_dp(&connector->base);
@@ -4720,6 +4709,22 @@ intel_dp_long_pulse(struct intel_connector *connector)
*/
status = connector_status_disconnected;
goto out;
+ } else {
+ /*
+ * If display is now connected check links status,
+ * there has been known issues of link loss triggering
+ * long pulse.
+ *
+ * Some sinks (eg. ASUS PB287Q) seem to perform some
+ * weird HPD ping pong during modesets. So we can apparently
+ * end up with HPD going low during a modeset, and then
+ * going back up soon after. And once that happens we must
+ * retrain the link to get a picture. That's in case no
+ * userspace component reacted to intermittent HPD dip.
+ */
+ struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+
+ intel_dp_retrain_link(encoder, ctx);
}
/*
@@ -4781,7 +4786,7 @@ intel_dp_detect(struct drm_connector *connector,
return ret;
}
- status = intel_dp_long_pulse(intel_dp->attached_connector);
+ status = intel_dp_long_pulse(intel_dp->attached_connector, ctx);
}
intel_dp->detect_done = false;