Merge tag 'topic/drm-misc-2016-05-08' of git://anongit.freedesktop.org/drm-intel into drm-next

Refcounting is hard, so here's a quick pull request with the one-liner to
fix up i915. Otherwise just a few other small things I picked up. Plus the
regression fix from Marten for rmfb behaviour that lingered around forever
since no testers. Feel free to cherry-pick that over to drm-fixes, but
given that there's not many who seemed to have cared, meh.

* tag 'topic/drm-misc-2016-05-08' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Correctly refcount connectors in hw state readou
  drm/panel: Flesh out kerneldoc
  drm: Add gpu.tmpl docbook to MAINTAINERS entry
  drm/core: Do not preserve framebuffer on rmfb, v4.
  drm: Fix up markup fumble
  drm/fb_helper: Fix a few typos

2 files changed, 60 insertions, 1 deletions

diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index b61c2d45192e..d4619dc2eecb 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -672,7 +672,7 @@ struct drm_connector_helper_funcs {
          * fixed panel can also manually add specific modes using
          * drm_mode_probed_add(). Drivers which manually add modes should also
          * make sure that the @display_info, @width_mm and @height_mm fields of the
-         * struct #drm_connector are filled in.
+         * struct &drm_connector are filled in.
          *
          * Virtual drivers that just want some standard VESA mode with a given
          * resolution can call drm_add_modes_noedid(), and mark the preferred
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index 13ff44b28893..220d1e2b3db1 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -75,6 +75,14 @@ struct drm_panel_funcs {
                            struct display_timing *timings);
 };
 
+/**
+ * struct drm_panel - DRM panel object
+ * @drm: DRM device owning the panel
+ * @connector: DRM connector that the panel is attached to
+ * @dev: parent device of the panel
+ * @funcs: operations that can be performed on the panel
+ * @list: panel entry in registry
+ */
 struct drm_panel {
         struct drm_device *drm;
         struct drm_connector *connector;
@@ -85,6 +93,17 @@ struct drm_panel {
         struct list_head list;
 };
 
+/**
+ * drm_disable_unprepare - power off a panel
+ * @panel: DRM panel
+ *
+ * Calling this function will completely power off a panel (assert the panel's
+ * reset, turn off power supplies, ...). After this function has completed, it
+ * is usually no longer possible to communicate with the panel until another
+ * call to drm_panel_prepare().
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
 static inline int drm_panel_unprepare(struct drm_panel *panel)
 {
         if (panel && panel->funcs && panel->funcs->unprepare)
@@ -93,6 +112,16 @@ static inline int drm_panel_unprepare(struct drm_panel *panel)
         return panel ? -ENOSYS : -EINVAL;
 }
 
+/**
+ * drm_panel_disable - disable a panel
+ * @panel: DRM panel
+ *
+ * This will typically turn off the panel's backlight or disable the display
+ * drivers. For smart panels it should still be possible to communicate with
+ * the integrated circuitry via any command bus after this call.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
 static inline int drm_panel_disable(struct drm_panel *panel)
 {
         if (panel && panel->funcs && panel->funcs->disable)
@@ -101,6 +130,16 @@ static inline int drm_panel_disable(struct drm_panel *panel)
         return panel ? -ENOSYS : -EINVAL;
 }
 
+/**
+ * drm_panel_prepare - power on a panel
+ * @panel: DRM panel
+ *
+ * Calling this function will enable power and deassert any reset signals to
+ * the panel. After this has completed it is possible to communicate with any
+ * integrated circuitry via a command bus.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
 static inline int drm_panel_prepare(struct drm_panel *panel)
 {
         if (panel && panel->funcs && panel->funcs->prepare)
@@ -109,6 +148,16 @@ static inline int drm_panel_prepare(struct drm_panel *panel)
         return panel ? -ENOSYS : -EINVAL;
 }
 
+/**
+ * drm_panel_enable - enable a panel
+ * @panel: DRM panel
+ *
+ * Calling this function will cause the panel display drivers to be turned on
+ * and the backlight to be enabled. Content will be visible on screen after
+ * this call completes.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
 static inline int drm_panel_enable(struct drm_panel *panel)
 {
         if (panel && panel->funcs && panel->funcs->enable)
@@ -117,6 +166,16 @@ static inline int drm_panel_enable(struct drm_panel *panel)
         return panel ? -ENOSYS : -EINVAL;
 }
 
+/**
+ * drm_panel_get_modes - probe the available display modes of a panel
+ * @panel: DRM panel
+ *
+ * The modes probed from the panel are automatically added to the connector
+ * that the panel is attached to.
+ *
+ * Return: The number of modes available from the panel on success or a
+ * negative error code on failure.
+ */
 static inline int drm_panel_get_modes(struct drm_panel *panel)
 {
         if (panel && panel->funcs && panel->funcs->get_modes)