Attachment 117765 Details for Bug 89461 – [PATCH] debug sink state on long hpd

[patch] [PATCH] debug sink state on long hpd

0001-debug-sink-state-on-long-hpd.patch (text/plain), 1.35 KB, created by Ville Syrjala on 2015-08-18 14:21:32 UTC

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Creator: Ville Syrjala

Created: 2015-08-18 14:21:32 UTC

Size: 1.35 KB

patch

obsolete

>From 038a58c3a6dcebae31dd0a52a9da25ab11fafe76 Mon Sep 17 00:00:00 2001
>From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
>Date: Tue, 18 Aug 2015 17:14:44 +0300
>Subject: [PATCH] debug sink state on long hpd
>
>---
> drivers/gpu/drm/i915/intel_dp.c | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
>index b905c19..02effad 100644
>--- a/drivers/gpu/drm/i915/intel_dp.c
>+++ b/drivers/gpu/drm/i915/intel_dp.c
>@@ -4998,6 +4998,8 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
> 	intel_display_power_get(dev_priv, power_domain);
> 
> 	if (long_hpd) {
>+		u8 buf = 0;
>+
> 		/* indicate that we need to restart link training */
> 		intel_dp->train_set_valid = false;
> 
>@@ -5015,9 +5017,16 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
> 
> 		intel_dp_probe_oui(intel_dp);
> 
>+		ret = drm_dp_dpcd_readb(&intel_dp->aux, DP_SET_POWER, &buf);
>+		if (ret == 1)
>+			DRM_DEBUG_KMS("DP sink power %x\n", buf);
>+
>+		ret = drm_dp_dpcd_readb(&intel_dp->aux, DP_TRAINING_PATTERN_SET, &buf);
>+		if (ret == 1)
>+			DRM_DEBUG_KMS("DP sink training pattern %x\n", buf);
>+
> 		if (!intel_dp_probe_mst(intel_dp))
> 			goto mst_fail;
>-
> 	} else {
> 		if (intel_dp->is_mst) {
> 			if (intel_dp_check_mst_status(intel_dp) == -EINVAL)
>-- 
>2.4.6
>

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Attachments on bug 89461: 114074 | 115898 | 116038 | 116342 | 117765

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