Merge tag 'topic/drm-misc-2016-08-23' of git://anongit.freedesktop.org/drm-intel into drm-next

A few bigger things:
- start of splitting drm_crtc.c into more manageable and better documneted
  chunks
- DRM_DEV_* logging (Sean)

* tag 'topic/drm-misc-2016-08-23' of git://anongit.freedesktop.org/drm-intel: (46 commits)
  drm/fb-helper: Make docs for fb_set_suspend wrappers consistent
  drm/rockchip: Delete unnecessary assignment for the field "owner"
  drm/bridge: dw-hdmi: Delete unnecessary assignment for the field "owner"
  drm/rockchip: Don't continue trying to enable crtc on failure
  drm/fb-helper: Add drm_fb_helper_set_suspend_unlocked()
  drm/fb-helper: Fix the dummy remove_conflicting_framebuffers
  drm/udl: Ensure channel is selected before using the device.
  drm: Avoid calling dev_printk(.dev = NULL)
  drm: avoid exposing kernel stack in compat_drm_getstats
  reservation: fix small comment typo
  drm: Don't implement empty prepare_fb()/cleanup_fb()
  virtio-gpu: Use memdup_user() rather than duplicating its implementation
  GPU-DRM-Savage: Use memdup_user() rather than duplicating
  drm: Allow drivers to modify plane_state in prepare_fb/cleanup_fb
  drm/rockchip: Use DRM_DEV_ERROR in vop
  drm: Introduce DRM_DEV_* log messages
  drm/edid: CEA mode 64 1080p100 vsync pulse width incorrect
  Revert "drm/hisilicon: Don't set drm_device->platformdev"
  dma-buf: fix kernel-doc warning and typos
  drm: Fix kerneldoc in drm_plane_helper.c
  ...

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 15704873fd61..53f07ac7c174 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -657,6 +657,15 @@ void drm_display_mode_to_videomode(const struct drm_display_mode *dmode,
 }
 EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode);
 
+/**
+ * drm_bus_flags_from_videomode - extract information about pixelclk and
+ * DE polarity from videomode and store it in a separate variable
+ * @vm: videomode structure to use
+ * @bus_flags: information about pixelclk and DE polarity will be stored here
+ *
+ * Sets DRM_BUS_FLAG_DE_(LOW|HIGH) and DRM_BUS_FLAG_PIXDATA_(POS|NEG)EDGE
+ * in @bus_flags according to DISPLAY_FLAGS found in @vm
+ */
 void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags)
 {
 	*bus_flags = 0;
@@ -677,6 +686,7 @@ EXPORT_SYMBOL_GPL(drm_bus_flags_from_videomode);
  * of_get_drm_display_mode - get a drm_display_mode from devicetree
  * @np: device_node with the timing specification
  * @dmode: will be set to the return value
+ * @bus_flags: information about pixelclk and DE polarity
  * @index: index into the list of display timings in devicetree
  *
  * This function is expensive and should only be used, if only one mode is to be