Merge tag 'topic/drm-misc-2016-11-10' of git://anongit.freedesktop.org/drm-intel into drm-next

- better atomic state debugging from Rob
- fence prep from gustavo
- sumits flushed out his backlog of pending dma-buf/fence patches from
  various people
- drm_mm leak debugging plus trying to appease Kconfig (Chris)
- a few misc things all over

* tag 'topic/drm-misc-2016-11-10' of git://anongit.freedesktop.org/drm-intel: (35 commits)
  drm: Make DRM_DEBUG_MM depend on STACKTRACE_SUPPORT
  drm/i915: Restrict DRM_DEBUG_MM automatic selection
  drm: Restrict stackdepot usage to builtin drm.ko
  drm/msm: module param to dump state on error irq
  drm/msm/mdp5: add atomic_print_state support
  drm/atomic: add debugfs file to dump out atomic state
  drm/atomic: add new drm_debug bit to dump atomic state
  drm: add helpers to go from plane state to drm_rect
  drm: add helper for printing to log or seq_file
  drm: helper macros to print composite types
  reservation: revert "wait only with non-zero timeout specified (v3)" v2
  drm/ttm: fix ttm_bo_wait
  dma-buf/fence: revert "don't wait when specified timeout is zero" (v2)
  dma-buf/fence: make timeout handling in fence_default_wait consistent (v2)
  drm/amdgpu: add the interface of waiting multiple fences (v4)
  dma-buf: return index of the first signaled fence (v2)
  MAINTAINERS: update Sync File Framework files
  dma-buf/sw_sync: put fence reference from the fence creation
  dma-buf/sw_sync: mark sync_timeline_create() static
  drm: Add stackdepot include for DRM_DEBUG_MM
  ...

include/drm/drm_plane.h

@@ -28,15 +28,11 @@
 #include <drm/drm_mode_object.h>
 
 struct drm_crtc;
+struct drm_printer;
 
 /**
  * struct drm_plane_state - mutable plane state
  * @plane: backpointer to the plane
- * @crtc: currently bound CRTC, NULL if disabled
- * @fb: currently bound framebuffer
- * @fence: optional fence to wait for before scanning out @fb
- * @crtc_x: left position of visible portion of plane on crtc
- * @crtc_y: upper position of visible portion of plane on crtc
  * @crtc_w: width of visible portion of plane on crtc
  * @crtc_h: height of visible portion of plane on crtc
  * @src_x: left position of visible portion of plane within
@@ -57,18 +53,51 @@ struct drm_crtc;
  *	it can be trusted.
  * @src: clipped source coordinates of the plane (in 16.16)
  * @dst: clipped destination coordinates of the plane
- * @visible: visibility of the plane
  * @state: backpointer to global drm_atomic_state
  */
 struct drm_plane_state {
 	struct drm_plane *plane;
 
-	struct drm_crtc *crtc;   /* do not write directly, use drm_atomic_set_crtc_for_plane() */
-	struct drm_framebuffer *fb;  /* do not write directly, use drm_atomic_set_fb_for_plane() */
+	/**
+	 * @crtc:
+	 *
+	 * Currently bound CRTC, NULL if disabled. Do not this write directly,
+	 * use drm_atomic_set_crtc_for_plane()
+	 */
+	struct drm_crtc *crtc;
+
+	/**
+	 * @fb:
+	 *
+	 * Currently bound framebuffer. Do not write this directly, use
+	 * drm_atomic_set_fb_for_plane()
+	 */
+	struct drm_framebuffer *fb;
+
+	/**
+	 * @fence:
+	 *
+	 * Optional fence to wait for before scanning out @fb. Do not write this
+	 * directly, use drm_atomic_set_fence_for_plane()
+	 */
 	struct dma_fence *fence;
 
-	/* Signed dest location allows it to be partially off screen */
-	int32_t crtc_x, crtc_y;
+	/**
+	 * @crtc_x:
+	 *
+	 * Left position of visible portion of plane on crtc, signed dest
+	 * location allows it to be partially off screen.
+	 */
+
+	int32_t crtc_x;
+	/**
+	 * @crtc_y:
+	 *
+	 * Upper position of visible portion of plane on crtc, signed dest
+	 * location allows it to be partially off screen.
+	 */
+	int32_t crtc_y;
+
 	uint32_t crtc_w, crtc_h;
 
 	/* Source values are 16.16 fixed point */
@@ -85,15 +114,41 @@ struct drm_plane_state {
 	/* Clipped coordinates */
 	struct drm_rect src, dst;
 
-	/*
-	 * Is the plane actually visible? Can be false even
-	 * if fb!=NULL and crtc!=NULL, due to clipping.
+	/**
+	 * @visible:
+	 *
+	 * Visibility of the plane. This can be false even if fb!=NULL and
+	 * crtc!=NULL, due to clipping.
 	 */
 	bool visible;
 
 	struct drm_atomic_state *state;
 };
 
+static inline struct drm_rect
+drm_plane_state_src(const struct drm_plane_state *state)
+{
+	struct drm_rect src = {
+		.x1 = state->src_x,
+		.y1 = state->src_y,
+		.x2 = state->src_x + state->src_w,
+		.y2 = state->src_y + state->src_h,
+	};
+	return src;
+}
+
+static inline struct drm_rect
+drm_plane_state_dest(const struct drm_plane_state *state)
+{
+	struct drm_rect dest = {
+		.x1 = state->crtc_x,
+		.y1 = state->crtc_y,
+		.x2 = state->crtc_x + state->crtc_w,
+		.y2 = state->crtc_y + state->crtc_h,
+	};
+	return dest;
+}
+
 /**
  * struct drm_plane_funcs - driver plane control functions
  */
@@ -322,6 +377,18 @@ struct drm_plane_funcs {
 	 * before data structures are torndown.
 	 */
 	void (*early_unregister)(struct drm_plane *plane);
+
+	/**
+	 * @atomic_print_state:
+	 *
+	 * If driver subclasses struct &drm_plane_state, it should implement
+	 * this optional hook for printing additional driver specific state.
+	 *
+	 * Do not call this directly, use drm_atomic_plane_print_state()
+	 * instead.
+	 */
+	void (*atomic_print_state)(struct drm_printer *p,
+				   const struct drm_plane_state *state);
 };
 
 /**