Merge tag 'topic/drm-misc-2016-06-01' of git://anongit.freedesktop.org/drm-intel into drm-next

Frist -misc pull for 4.8, with pretty much just random all over plus a few
more lockless gem BO patches acked/reviewed by driver maintainers.

I'm starting a bit earlier this time around because there's a few invasive
patch series to land (nonblocking atomic prep work, fence prep work,
rst/sphinx kerneldoc finally happening) and I need a baseline with all the
branches merged.

* tag 'topic/drm-misc-2016-06-01' of git://anongit.freedesktop.org/drm-intel: (21 commits)
  drm/vc4: Use lockless gem BO free callback
  drm/vc4: Use drm_gem_object_unreference_unlocked
  drm: Initialize a linear gamma table by default
  drm/vgem: Use lockless gem BO free callback
  drm/qxl: Don't set a gamma table size
  drm/msm: Nuke dummy gamma_set/get functions
  drm/cirrus: Drop redundnant gamma size check
  drm/fb-helper: Remove dead code in setcolreg
  drm/mediatek: Use lockless gem BO free callback
  drm/hisilicon: Use lockless gem BO free callback
  drm/hlcd: Use lockless gem BO free callback
  vga_switcheroo: Support deferred probing of audio clients
  vga_switcheroo: Add helper for deferred probing
  virtio-gpu: fix output lookup
  drm/doc: Unify KMS Locking docs
  drm/atomic-helper: Do not call ->mode_fixup for CRTC which will be disabled
  Fix annoyingly awkward typo in drm_edid_load.c
  drm/doc: Drop vblank_disable_allow wording
  drm: use seqlock for vblank time/count
  drm/mm: avoid possible null pointer dereference
  ...

2 files changed, 7 insertions, 9 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 84f1a8eefbdb..af8b71b2e5bd 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -52,6 +52,7 @@
 #include <linux/poll.h>
 #include <linux/ratelimit.h>
 #include <linux/sched.h>
+#include <linux/seqlock.h>
 #include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/vmalloc.h>
@@ -392,11 +393,6 @@ struct drm_master {
 	void *driver_priv;
 };
 
-/* Size of ringbuffer for vblank timestamps. Just double-buffer
- * in initial implementation.
- */
-#define DRM_VBLANKTIME_RBSIZE 2
-
 /* Flags and return codes for get_vblank_timestamp() driver function. */
 #define DRM_CALLED_FROM_VBLIRQ 1
 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
@@ -725,10 +721,10 @@ struct drm_vblank_crtc {
 	wait_queue_head_t queue;	/**< VBLANK wait queue */
 	struct timer_list disable_timer;		/* delayed disable timer */
 
-	/* vblank counter, protected by dev->vblank_time_lock for writes */
-	u32 count;
-	/* vblank timestamps, protected by dev->vblank_time_lock for writes */
-	struct timeval time[DRM_VBLANKTIME_RBSIZE];
+	seqlock_t seqlock;		/* protects vblank count and time */
+
+	u32 count;			/* vblank counter */
+	struct timeval time;		/* vblank timestamp */
 
 	atomic_t refcount;		/* number of users of vblank interruptsper crtc */
 	u32 last;			/* protected by dev->vbl_lock, used */
diff --git a/include/linux/vga_switcheroo.h b/include/linux/vga_switcheroo.h
index b39a5f3153bd..960bedbdec87 100644
--- a/include/linux/vga_switcheroo.h
+++ b/include/linux/vga_switcheroo.h
@@ -165,6 +165,7 @@ int vga_switcheroo_unlock_ddc(struct pci_dev *pdev);
 
 int vga_switcheroo_process_delayed_switch(void);
 
+bool vga_switcheroo_client_probe_defer(struct pci_dev *pdev);
 enum vga_switcheroo_state vga_switcheroo_get_client_state(struct pci_dev *dev);
 
 void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic);
@@ -188,6 +189,7 @@ static inline enum vga_switcheroo_handler_flags_t vga_switcheroo_handler_flags(v
 static inline int vga_switcheroo_lock_ddc(struct pci_dev *pdev) { return -ENODEV; }
 static inline int vga_switcheroo_unlock_ddc(struct pci_dev *pdev) { return -ENODEV; }
 static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
+static inline bool vga_switcheroo_client_probe_defer(struct pci_dev *pdev) { return false; }
 static inline enum vga_switcheroo_state vga_switcheroo_get_client_state(struct pci_dev *dev) { return VGA_SWITCHEROO_ON; }
 
 static inline void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic) {}