Merge tag 'topic/drm-misc-2015-10-19' of git://anongit.freedesktop.org/drm-intel into drm-next

More drm-misc for 4.4.
- fb refcount fix in atomic fbdev
- various locking reworks to reduce drm_global_mutex and dev->struct_mutex
- rename docbook to gpu.tmpl and include vga_switcheroo stuff, plus more
  vga_switcheroo (Lukas Wunner)
- viewport check fixes for atomic drivers from Ville
- DRM_DEBUG_VBL from Ville
- non-contentious header fixes from Mikko Rapeli
- small things all over

* tag 'topic/drm-misc-2015-10-19' of git://anongit.freedesktop.org/drm-intel: (31 commits)
  drm/fb-helper: Fix fb refcounting in pan_display_atomic
  drm/fb-helper: Set plane rotation directly
  drm: fix mutex leak in drm_dp_get_mst_branch_device
  drm: Check plane src coordinates correctly during page flip for atomic drivers
  drm: Check crtc viewport correctly with rotated primary plane on atomic drivers
  drm: Refactor plane src coordinate checks
  drm: Swap w/h when converting the mode to src coordidates for a rotated primary plane
  drm: Don't leak fb when plane crtc coodinates are bad
  ALSA: hda - Spell vga_switcheroo consistently
  drm/gem: Use kref_get_unless_zero for the weak mmap references
  drm/vgem: Drop vgem_drm_gem_mmap
  drm: Fix return value of drm_framebuffer_init()
  drm/gem: Use container_of in drm_gem_object_free
  drm/gem: Check locking in drm_gem_object_unreference
  drm/gem: Drop struct_mutex requirement from drm_gem_mmap_obj
  drm/i810_drm.h: include drm/drm.h
  r128_drm.h: include drm/drm.h
  savage_drm.h: include <drm/drm.h>
  gpu/doc: Convert to markdown harder
  gpu/doc: Add vga_switcheroo documentation
  ...

4 files changed, 21 insertions, 24 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 3dc56d3413b7..4d3b842f4319 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -107,6 +107,9 @@ struct dma_buf_attachment;
  * ATOMIC: used in the atomic code.
  *	  This is the category used by the DRM_DEBUG_ATOMIC() macro.
  *
+ * VBL: used for verbose debug message in the vblank code
+ *	  This is the category used by the DRM_DEBUG_VBL() macro.
+ *
  * Enabling verbose debug messages is done through the drm.debug parameter,
  * each category being enabled by a bit.
  *
@@ -114,7 +117,7 @@ struct dma_buf_attachment;
  * drm.debug=0x2 will enable DRIVER messages
  * drm.debug=0x3 will enable CORE and DRIVER messages
  * ...
- * drm.debug=0xf will enable all messages
+ * drm.debug=0x3f will enable all messages
  *
  * An interesting feature is that it's possible to enable verbose logging at
  * run-time by echoing the debug value in its sysfs node:
@@ -125,6 +128,7 @@ struct dma_buf_attachment;
 #define DRM_UT_KMS		0x04
 #define DRM_UT_PRIME		0x08
 #define DRM_UT_ATOMIC		0x10
+#define DRM_UT_VBL		0x20
 
 extern __printf(2, 3)
 void drm_ut_debug_printk(const char *function_name,
@@ -217,6 +221,11 @@ void drm_err(const char *format, ...);
 		if (unlikely(drm_debug & DRM_UT_ATOMIC))		\
 			drm_ut_debug_printk(__func__, fmt, ##args);	\
 	} while (0)
+#define DRM_DEBUG_VBL(fmt, args...)					\
+	do {								\
+		if (unlikely(drm_debug & DRM_UT_VBL))			\
+			drm_ut_debug_printk(__func__, fmt, ##args);	\
+	} while (0)
 
 /*@}*/
 
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 33ddedd36038..3f0c6909dda1 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -407,9 +407,6 @@ struct drm_crtc_funcs {
  * @enabled: is this CRTC enabled?
  * @mode: current mode timings
  * @hwmode: mode timings as programmed to hw regs
- * @invert_dimensions: for purposes of error checking crtc vs fb sizes,
- *    invert the width/height of the crtc.  This is used if the driver
- *    is performing 90 or 270 degree rotated scanout
  * @x: x position on screen
  * @y: y position on screen
  * @funcs: CRTC control functions
@@ -458,8 +455,6 @@ struct drm_crtc {
 	 */
 	struct drm_display_mode hwmode;
 
-	bool invert_dimensions;
-
 	int x, y;
 	const struct drm_crtc_funcs *funcs;
 
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index 7a592d7e398b..15e7f007380f 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -142,8 +142,11 @@ drm_gem_object_reference(struct drm_gem_object *obj)
 static inline void
 drm_gem_object_unreference(struct drm_gem_object *obj)
 {
-	if (obj != NULL)
+	if (obj != NULL) {
+		WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex));
+
 		kref_put(&obj->refcount, drm_gem_object_free);
+	}
 }
 
 static inline void
diff --git a/include/drm/drm_vma_manager.h b/include/drm/drm_vma_manager.h
index 8cd402c73a5f..2f63dd5e05eb 100644
--- a/include/drm/drm_vma_manager.h
+++ b/include/drm/drm_vma_manager.h
@@ -54,9 +54,6 @@ void drm_vma_offset_manager_init(struct drm_vma_offset_manager *mgr,
 				 unsigned long page_offset, unsigned long size);
 void drm_vma_offset_manager_destroy(struct drm_vma_offset_manager *mgr);
 
-struct drm_vma_offset_node *drm_vma_offset_lookup(struct drm_vma_offset_manager *mgr,
-						  unsigned long start,
-						  unsigned long pages);
 struct drm_vma_offset_node *drm_vma_offset_lookup_locked(struct drm_vma_offset_manager *mgr,
 							   unsigned long start,
 							   unsigned long pages);
@@ -71,25 +68,25 @@ bool drm_vma_node_is_allowed(struct drm_vma_offset_node *node,
 			     struct file *filp);
 
 /**
- * drm_vma_offset_exact_lookup() - Look up node by exact address
+ * drm_vma_offset_exact_lookup_locked() - Look up node by exact address
  * @mgr: Manager object
  * @start: Start address (page-based, not byte-based)
  * @pages: Size of object (page-based)
  *
- * Same as drm_vma_offset_lookup() but does not allow any offset into the node.
+ * Same as drm_vma_offset_lookup_locked() but does not allow any offset into the node.
  * It only returns the exact object with the given start address.
  *
  * RETURNS:
  * Node at exact start address @start.
  */
 static inline struct drm_vma_offset_node *
-drm_vma_offset_exact_lookup(struct drm_vma_offset_manager *mgr,
-			    unsigned long start,
-			    unsigned long pages)
+drm_vma_offset_exact_lookup_locked(struct drm_vma_offset_manager *mgr,
+				   unsigned long start,
+				   unsigned long pages)
 {
 	struct drm_vma_offset_node *node;
 
-	node = drm_vma_offset_lookup(mgr, start, pages);
+	node = drm_vma_offset_lookup_locked(mgr, start, pages);
 	return (node && node->vm_node.start == start) ? node : NULL;
 }
 
@@ -97,7 +94,7 @@ drm_vma_offset_exact_lookup(struct drm_vma_offset_manager *mgr,
  * drm_vma_offset_lock_lookup() - Lock lookup for extended private use
  * @mgr: Manager object
  *
- * Lock VMA manager for extended lookups. Only *_locked() VMA function calls
+ * Lock VMA manager for extended lookups. Only locked VMA function calls
  * are allowed while holding this lock. All other contexts are blocked from VMA
  * until the lock is released via drm_vma_offset_unlock_lookup().
  *
@@ -108,13 +105,6 @@ drm_vma_offset_exact_lookup(struct drm_vma_offset_manager *mgr,
  * not call any other VMA helpers while holding this lock.
  *
  * Note: You're in atomic-context while holding this lock!
- *
- * Example:
- *   drm_vma_offset_lock_lookup(mgr);
- *   node = drm_vma_offset_lookup_locked(mgr);
- *   if (node)
- *       kref_get_unless_zero(container_of(node, sth, entr));
- *   drm_vma_offset_unlock_lookup(mgr);
  */
 static inline void drm_vma_offset_lock_lookup(struct drm_vma_offset_manager *mgr)
 {