[PATCH 1/2] drm: Make the HPD status updates debug logs more readable

[Damien Lespiau]

From: Damien Lespiau <damien.lesp...@intel.com>

Instead of just printing "status updated from 1 to 2", make those enum
numbers immediately readable.

v2: Also patch output_poll_execute() (Daniel Vetter)

Signed-off-by: Damien Lespiau <damien.lesp...@intel.com>
---
 drivers/gpu/drm/drm_crtc_helper.c | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc_helper.c 
b/drivers/gpu/drm/drm_crtc_helper.c
index 1fe719f..524f0d3 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -950,6 +950,18 @@ void drm_kms_helper_hotplug_event(struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_kms_helper_hotplug_event);
 
+static const char *connector_status_str(enum drm_connector_status status)
+{
+       switch (status) {
+       case connector_status_connected:
+               return "connected";
+       case connector_status_disconnected:
+               return "disconnected";
+       default:
+               return "unknown";
+       }
+}
+
 #define DRM_OUTPUT_POLL_PERIOD (10*HZ)
 static void output_poll_execute(struct work_struct *work)
 {
@@ -984,10 +996,11 @@ static void output_poll_execute(struct work_struct *work)
                        continue;
 
                connector->status = connector->funcs->detect(connector, false);
-               DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to 
%d\n",
+               DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to 
%s\n",
                              connector->base.id,
                              drm_get_connector_name(connector),
-                             old_status, connector->status);
+                             connector_status_str(old_status),
+                             connector_status_str(connector->status));
                if (old_status != connector->status)
                        changed = true;
        }
@@ -1062,10 +1075,11 @@ void drm_helper_hpd_irq_event(struct drm_device *dev)
                old_status = connector->status;
 
                connector->status = connector->funcs->detect(connector, false);
-               DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to 
%d\n",
+               DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to 
%s\n",
                              connector->base.id,
                              drm_get_connector_name(connector),
-                             old_status, connector->status);
+                             connector_status_str(old_status),
+                             connector_status_str(connector->status));
                if (old_status != connector->status)
                        changed = true;
        }
-- 
1.7.11.7

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