patches.baytrail/0510-drm-i915-Add-some-debug-breadcrumbs-to-connector-det.patch

From 8a0ef882a773379ea5b08464d0c8018dddfd3c69 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sat, 20 Jul 2013 20:27:08 +0100
Subject: drm/i915: Add some debug breadcrumbs to connector detection

Try to decypher detection failures is a little tricker at the moment as
the only indicator of progress is when output_poll_execute() tells us
the result after the connector->detect() has run. This patch adds a
telltale to the start of each detect function so that we can track
progress and associate activity more clearly with each connector.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 164c8598450657d01fa75d6c997e95eb35672eef)
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_crt.c  |    4 ++++
 drivers/gpu/drm/i915/intel_dp.c   |    3 +++
 drivers/gpu/drm/i915/intel_dvo.c  |    2 ++
 drivers/gpu/drm/i915/intel_hdmi.c |    3 +++
 drivers/gpu/drm/i915/intel_lvds.c |    3 +++
 drivers/gpu/drm/i915/intel_sdvo.c |    3 +++
 drivers/gpu/drm/i915/intel_tv.c   |    4 ++++
 7 files changed, 22 insertions(+)

--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -614,6 +614,10 @@ intel_crt_detect(struct drm_connector *c
 	enum drm_connector_status status;
 	struct intel_load_detect_pipe tmp;
 
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n",
+		      connector->base.id, drm_get_connector_name(connector),
+		      force);
+
 	if (I915_HAS_HOTPLUG(dev)) {
 		/* We can not rely on the HPD pin always being correctly wired
 		 * up, for example many KVM do not pass it through, and so
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2847,6 +2847,9 @@ intel_dp_detect(struct drm_connector *co
 	enum drm_connector_status status;
 	struct edid *edid = NULL;
 
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		      connector->base.id, drm_get_connector_name(connector));
+
 	intel_dp->has_audio = false;
 
 	if (HAS_PCH_SPLIT(dev))
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -332,6 +332,8 @@ static enum drm_connector_status
 intel_dvo_detect(struct drm_connector *connector, bool force)
 {
 	struct intel_dvo *intel_dvo = intel_attached_dvo(connector);
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		      connector->base.id, drm_get_connector_name(connector));
 	return intel_dvo->dev.dev_ops->detect(&intel_dvo->dev);
 }
 
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -879,6 +879,9 @@ intel_hdmi_detect(struct drm_connector *
 	struct edid *edid;
 	enum drm_connector_status status = connector_status_disconnected;
 
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		      connector->base.id, drm_get_connector_name(connector));
+
 	intel_hdmi->has_hdmi_sink = false;
 	intel_hdmi->has_audio = false;
 	intel_hdmi->rgb_quant_range_selectable = false;
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -343,6 +343,9 @@ intel_lvds_detect(struct drm_connector *
 	struct drm_device *dev = connector->dev;
 	enum drm_connector_status status;
 
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		      connector->base.id, drm_get_connector_name(connector));
+
 	status = intel_panel_detect(dev);
 	if (status != connector_status_unknown)
 		return status;
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1696,6 +1696,9 @@ intel_sdvo_detect(struct drm_connector *
 	struct intel_sdvo_connector *intel_sdvo_connector = to_intel_sdvo_connector(connector);
 	enum drm_connector_status ret;
 
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		      connector->base.id, drm_get_connector_name(connector));
+
 	if (!intel_sdvo_get_value(intel_sdvo,
 				  SDVO_CMD_GET_ATTACHED_DISPLAYS,
 				  &response, 2))
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1317,6 +1317,10 @@ intel_tv_detect(struct drm_connector *co
 	struct intel_tv *intel_tv = intel_attached_tv(connector);
 	int type;
 
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n",
+		      connector->base.id, drm_get_connector_name(connector),
+		      force);
+
 	mode = reported_modes[0];
 
 	if (force) {