[PATCH] drm/mode: document path property and function to set it.

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

These two didn't get documented properly, do so.

Pointed out by Daniel.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 Documentation/DocBook/drm.tmpl |  9 ++++++++-
 drivers/gpu/drm/drm_crtc.c     | 10 ++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index bacefc5..0a5cbbb 100644
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -2509,7 +2509,7 @@ void intel_crt_init(struct drm_device *dev)
 	</tr>
 	<tr>
 	<td rowspan="21" valign="top" >DRM</td>
-	<td rowspan="2" valign="top" >Generic</td>
+	<td rowspan="3" valign="top" >Generic</td>
 	<td valign="top" >“EDID”</td>
 	<td valign="top" >BLOB | IMMUTABLE</td>
 	<td valign="top" >0</td>
@@ -2524,6 +2524,13 @@ void intel_crt_init(struct drm_device *dev)
 	<td valign="top" >Contains DPMS operation mode value.</td>
 	</tr>
 	<tr>
+	<td valign="top" >“PATH”</td>
+	<td valign="top" >BLOB | IMMUTABLE</td>
+	<td valign="top" >0</td>
+	<td valign="top" >Connector</td>
+	<td valign="top" >Contains topology path to a connector.</td>
+	</tr>
+	<tr>
 	<td rowspan="1" valign="top" >Plane</td>
 	<td valign="top" >“type”</td>
 	<td valign="top" >ENUM | IMMUTABLE</td>
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 90e7730..363301c 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -3980,6 +3980,16 @@ done:
 	return ret;
 }
 
+/**
+ * drm_mode_connector_set_path_property - set tile property on connector
+ * @connector: connector to set property on.
+ * @path: path to use for property.
+ *
+ * This creates a property to expose to userspace to specify a
+ * connector path. This is mainly used for DisplayPort MST where
+ * connectors have a topology and we want to allow userspace to give
+ * them more meaningful names.
+ */
 int drm_mode_connector_set_path_property(struct drm_connector *connector,
 					 char *path)
 {
-- 
2.1.0