Merge tag 'drm-misc-next-2017-03-31' of git://anongit.freedesktop.org/git/drm-misc into drm-next

drm-misc for 4.12:

Core:
- Removed some fb subsampling dimension checks from core (Ville)
- Some MST slot cleanup (Dhinakaran)
- Extracted drm_debugfs.h & drm_ioctl.h from drmP.h (Daniel)
- Added drm_atomic_helper_shutdown() to compliment suspend/resume counterparts
  (Daniel)
- Pipe context through legacy modeset to remove legacy_backoff nasties (Daniel)
- Cleanups around vblank as well as allowing lockless counter reads (Chris W.)
- VGA Switcheroo added to MAINTAINERS with Lukas Wunner as reviewer (Lukas)

Drivers:
- Enhancements to rockchip driver probe (Jeffy) and dsi (Chris Z.)
- Thunderbolt external GPU awareness added (Lukas)

* tag 'drm-misc-next-2017-03-31' of git://anongit.freedesktop.org/git/drm-misc: (63 commits)
  apple-gmux: Don't switch external DP port on 2011+ MacBook Pros
  drm/nouveau: Don't register Thunderbolt eGPU with vga_switcheroo
  drm/amdgpu: Don't register Thunderbolt eGPU with vga_switcheroo
  drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo
  PCI: Recognize Thunderbolt devices
  MAINTAINERS: Add Lukas Wunner as reviewer for vga_switcheroo
  drm: Fix locking gotcha in page_flip ioctl
  drm: Clarify the role of plane_state argument to drm_simple update().
  drm: Clear e after kfree in drm_mode_page_flip_ioctl
  drm: Convert cmpxchg(bool) back to a two step operation
  drm/bridge: ti-tfp410: support hpd via gpio
  drm: use .hword to represent 16-bit numbers
  Revert unrelated part of "drm: simplify the locking in the GETCRTC ioctl"
  drm: Fixup failure paths in drm_atomic_helper_set_config
  drm: Peek at the current counter/timestamp for vblank queries
  drm: Refactor vblank sequence number comparison
  drm: vblank cannot be enabled if dev->irq_enabled is false
  drm: Mark up accesses of vblank->enabled outside of its spinlock
  drm: Make the decision to keep vblank irq enabled earlier
  drm/atomic-helper: Remove the backoff hack from set_config
  ...

23 files changed, 658 insertions, 254 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 0e383438f793..3bfafcdb8710 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -78,6 +78,8 @@
 #include <drm/drm_prime.h>
 #include <drm/drm_pci.h>
 #include <drm/drm_file.h>
+#include <drm/drm_debugfs.h>
+#include <drm/drm_ioctl.h>
 
 struct module;
 
@@ -316,54 +318,10 @@ struct pci_controller;
 
 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 
-/**
- * Ioctl function type.
- *
- * \param inode device inode.
- * \param file_priv DRM file private pointer.
- * \param cmd command.
- * \param arg argument.
- */
-typedef int drm_ioctl_t(struct drm_device *dev, void *data,
-			struct drm_file *file_priv);
-
-typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
-			       unsigned long arg);
-
-#define DRM_IOCTL_NR(n)                _IOC_NR(n)
-#define DRM_MAJOR       226
-
-#define DRM_AUTH	0x1
-#define	DRM_MASTER	0x2
-#define DRM_ROOT_ONLY	0x4
-#define DRM_CONTROL_ALLOW 0x8
-#define DRM_UNLOCKED	0x10
-#define DRM_RENDER_ALLOW 0x20
-
-struct drm_ioctl_desc {
-	unsigned int cmd;
-	int flags;
-	drm_ioctl_t *func;
-	const char *name;
-};
-
-/**
- * Creates a driver or general drm_ioctl_desc array entry for the given
- * ioctl, for use by drm_ioctl().
- */
-
-#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags)				\
-	[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {	\
-		.cmd = DRM_IOCTL_##ioctl,				\
-		.func = _func,						\
-		.flags = _flags,					\
-		.name = #ioctl						\
-	 }
 
 /* Flags and return codes for get_vblank_timestamp() driver function. */
 #define DRM_CALLED_FROM_VBLIRQ 1
 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
-#define DRM_VBLANKTIME_IN_VBLANK         (1 << 1)
 
 /* get_scanout_position() return flags */
 #define DRM_SCANOUTPOS_VALID        (1 << 0)
@@ -371,27 +329,6 @@ struct drm_ioctl_desc {
 #define DRM_SCANOUTPOS_ACCURATE     (1 << 2)
 
 /**
- * Info file list entry. This structure represents a debugfs or proc file to
- * be created by the drm core
- */
-struct drm_info_list {
-	const char *name; /** file name */
-	int (*show)(struct seq_file*, void*); /** show callback */
-	u32 driver_features; /**< Required driver features for this entry */
-	void *data;
-};
-
-/**
- * debugfs node structure. This structure represents a debugfs file.
- */
-struct drm_info_node {
-	struct list_head list;
-	struct drm_minor *minor;
-	const struct drm_info_list *info_ent;
-	struct dentry *dent;
-};
-
-/**
  * DRM device structure. This structure represent a complete card that
  * may contain multiple heads.
  */
@@ -569,51 +506,12 @@ static inline int drm_device_is_unplugged(struct drm_device *dev)
 /*@{*/
 
 				/* Driver support (drm_drv.h) */
-extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv);
-extern long drm_ioctl(struct file *filp,
-		      unsigned int cmd, unsigned long arg);
-#ifdef CONFIG_COMPAT
-extern long drm_compat_ioctl(struct file *filp,
-			     unsigned int cmd, unsigned long arg);
-#else
-/* Let drm_compat_ioctl be assigned to .compat_ioctl unconditionally */
-#define drm_compat_ioctl NULL
-#endif
-extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
-
-/* Misc. IOCTL support (drm_ioctl.c) */
-int drm_noop(struct drm_device *dev, void *data,
-	     struct drm_file *file_priv);
-int drm_invalid_op(struct drm_device *dev, void *data,
-		   struct drm_file *file_priv);
 
 /*
  * These are exported to drivers so that they can implement fencing using
  * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
  */
 
-				/* Debugfs support */
-#if defined(CONFIG_DEBUG_FS)
-extern int drm_debugfs_create_files(const struct drm_info_list *files,
-				    int count, struct dentry *root,
-				    struct drm_minor *minor);
-extern int drm_debugfs_remove_files(const struct drm_info_list *files,
-				    int count, struct drm_minor *minor);
-#else
-static inline int drm_debugfs_create_files(const struct drm_info_list *files,
-					   int count, struct dentry *root,
-					   struct drm_minor *minor)
-{
-	return 0;
-}
-
-static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
-					   int count, struct drm_minor *minor)
-{
-	return 0;
-}
-#endif
-
 			       /* sysfs support (drm_sysfs.c) */
 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
 
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 0147a047878d..fd33ed5eaeb4 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -498,6 +498,23 @@ int __must_check drm_atomic_nonblocking_commit(struct drm_atomic_state *state);
 
 void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 
+/**
+ * for_each_connector_in_state - iterate over all connectors in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @connector: &struct drm_connector iteration cursor
+ * @connector_state: &struct drm_connector_state iteration cursor
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all connectors in an atomic update. Note that before the
+ * software state is committed (by calling drm_atomic_helper_swap_state(), this
+ * points to the new state, while afterwards it points to the old state. Due to
+ * this tricky confusion this macro is deprecated.
+ *
+ * FIXME:
+ *
+ * Replace all usage of this with one of the explicit iterators below and then
+ * remove this macro.
+ */
 #define for_each_connector_in_state(__state, connector, connector_state, __i) \
 	for ((__i) = 0;							\
 	     (__i) < (__state)->num_connector &&				\
@@ -506,6 +523,20 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (connector)
 
+/**
+ * for_each_oldnew_connector_in_state - iterate over all connectors in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @connector: &struct drm_connector iteration cursor
+ * @old_connector_state: &struct drm_connector_state iteration cursor for the
+ * 	old state
+ * @new_connector_state: &struct drm_connector_state iteration cursor for the
+ * 	new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all connectors in an atomic update, tracking both old and
+ * new state. This is useful in places where the state delta needs to be
+ * considered, for example in atomic check functions.
+ */
 #define for_each_oldnew_connector_in_state(__state, connector, old_connector_state, new_connector_state, __i) \
 	for ((__i) = 0;								\
 	     (__i) < (__state)->num_connector &&				\
@@ -515,6 +546,18 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (connector)
 
+/**
+ * for_each_old_connector_in_state - iterate over all connectors in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @connector: &struct drm_connector iteration cursor
+ * @old_connector_state: &struct drm_connector_state iteration cursor for the
+ * 	old state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all connectors in an atomic update, tracking only the old
+ * state. This is useful in disable functions, where we need the old state the
+ * hardware is still in.
+ */
 #define for_each_old_connector_in_state(__state, connector, old_connector_state, __i) \
 	for ((__i) = 0;								\
 	     (__i) < (__state)->num_connector &&				\
@@ -523,6 +566,18 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (connector)
 
+/**
+ * for_each_new_connector_in_state - iterate over all connectors in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @connector: &struct drm_connector iteration cursor
+ * @new_connector_state: &struct drm_connector_state iteration cursor for the
+ * 	new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all connectors in an atomic update, tracking only the new
+ * state. This is useful in enable functions, where we need the new state the
+ * hardware should be in when the atomic commit operation has completed.
+ */
 #define for_each_new_connector_in_state(__state, connector, new_connector_state, __i) \
 	for ((__i) = 0;								\
 	     (__i) < (__state)->num_connector &&				\
@@ -531,6 +586,23 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (connector)
 
+/**
+ * for_each_crtc_in_state - iterate over all connectors in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @crtc: &struct drm_crtc iteration cursor
+ * @crtc_state: &struct drm_crtc_state iteration cursor
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all CRTCs in an atomic update. Note that before the
+ * software state is committed (by calling drm_atomic_helper_swap_state(), this
+ * points to the new state, while afterwards it points to the old state. Due to
+ * this tricky confusion this macro is deprecated.
+ *
+ * FIXME:
+ *
+ * Replace all usage of this with one of the explicit iterators below and then
+ * remove this macro.
+ */
 #define for_each_crtc_in_state(__state, crtc, crtc_state, __i)	\
 	for ((__i) = 0;						\
 	     (__i) < (__state)->dev->mode_config.num_crtc &&	\
@@ -539,6 +611,18 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)						\
 		for_each_if (crtc_state)
 
+/**
+ * for_each_oldnew_crtc_in_state - iterate over all CRTCs in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @crtc: &struct drm_crtc iteration cursor
+ * @old_crtc_state: &struct drm_crtc_state iteration cursor for the old state
+ * @new_crtc_state: &struct drm_crtc_state iteration cursor for the new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all CRTCs in an atomic update, tracking both old and
+ * new state. This is useful in places where the state delta needs to be
+ * considered, for example in atomic check functions.
+ */
 #define for_each_oldnew_crtc_in_state(__state, crtc, old_crtc_state, new_crtc_state, __i) \
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_crtc &&		\
@@ -548,6 +632,17 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (crtc)
 
+/**
+ * for_each_old_crtc_in_state - iterate over all CRTCs in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @crtc: &struct drm_crtc iteration cursor
+ * @old_crtc_state: &struct drm_crtc_state iteration cursor for the old state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all CRTCs in an atomic update, tracking only the old
+ * state. This is useful in disable functions, where we need the old state the
+ * hardware is still in.
+ */
 #define for_each_old_crtc_in_state(__state, crtc, old_crtc_state, __i)	\
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_crtc &&		\
@@ -556,6 +651,17 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (crtc)
 
+/**
+ * for_each_new_crtc_in_state - iterate over all CRTCs in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @crtc: &struct drm_crtc iteration cursor
+ * @new_crtc_state: &struct drm_crtc_state iteration cursor for the new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all CRTCs in an atomic update, tracking only the new
+ * state. This is useful in enable functions, where we need the new state the
+ * hardware should be in when the atomic commit operation has completed.
+ */
 #define for_each_new_crtc_in_state(__state, crtc, new_crtc_state, __i)	\
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_crtc &&		\
@@ -564,6 +670,23 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (crtc)
 
+/**
+ * for_each_plane_in_state - iterate over all planes in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @plane: &struct drm_plane iteration cursor
+ * @plane_state: &struct drm_plane_state iteration cursor
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all planes in an atomic update. Note that before the
+ * software state is committed (by calling drm_atomic_helper_swap_state(), this
+ * points to the new state, while afterwards it points to the old state. Due to
+ * this tricky confusion this macro is deprecated.
+ *
+ * FIXME:
+ *
+ * Replace all usage of this with one of the explicit iterators below and then
+ * remove this macro.
+ */
 #define for_each_plane_in_state(__state, plane, plane_state, __i)		\
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_total_plane &&	\
@@ -572,6 +695,18 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (plane_state)
 
+/**
+ * for_each_oldnew_plane_in_state - iterate over all planes in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @plane: &struct drm_plane iteration cursor
+ * @old_plane_state: &struct drm_plane_state iteration cursor for the old state
+ * @new_plane_state: &struct drm_plane_state iteration cursor for the new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all planes in an atomic update, tracking both old and
+ * new state. This is useful in places where the state delta needs to be
+ * considered, for example in atomic check functions.
+ */
 #define for_each_oldnew_plane_in_state(__state, plane, old_plane_state, new_plane_state, __i) \
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_total_plane &&	\
@@ -581,6 +716,17 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (plane)
 
+/**
+ * for_each_old_plane_in_state - iterate over all planes in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @plane: &struct drm_plane iteration cursor
+ * @old_plane_state: &struct drm_plane_state iteration cursor for the old state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all planes in an atomic update, tracking only the old
+ * state. This is useful in disable functions, where we need the old state the
+ * hardware is still in.
+ */
 #define for_each_old_plane_in_state(__state, plane, old_plane_state, __i) \
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_total_plane &&	\
@@ -589,6 +735,17 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (plane)
 
+/**
+ * for_each_new_plane_in_state - iterate over all planes in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @plane: &struct drm_plane iteration cursor
+ * @new_plane_state: &struct drm_plane_state iteration cursor for the new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all planes in an atomic update, tracking only the new
+ * state. This is useful in enable functions, where we need the new state the
+ * hardware should be in when the atomic commit operation has completed.
+ */
 #define for_each_new_plane_in_state(__state, plane, new_plane_state, __i) \
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_total_plane &&	\
@@ -603,7 +760,7 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
  *
  * To give drivers flexibility &struct drm_crtc_state has 3 booleans to track
  * whether the state CRTC changed enough to need a full modeset cycle:
- * connectors_changed, mode_changed and active_changed. This helper simply
+ * planes_changed, mode_changed and active_changed. This helper simply
  * combines these three to compute the overall need for a modeset for @state.
  *
  * The atomic helper code sets these booleans, but drivers can and should
diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
index dc16274987c7..fd395dc050ee 100644
--- a/include/drm/drm_atomic_helper.h
+++ b/include/drm/drm_atomic_helper.h
@@ -94,16 +94,20 @@ int drm_atomic_helper_update_plane(struct drm_plane *plane,
 				   int crtc_x, int crtc_y,
 				   unsigned int crtc_w, unsigned int crtc_h,
 				   uint32_t src_x, uint32_t src_y,
-				   uint32_t src_w, uint32_t src_h);
-int drm_atomic_helper_disable_plane(struct drm_plane *plane);
+				   uint32_t src_w, uint32_t src_h,
+				   struct drm_modeset_acquire_ctx *ctx);
+int drm_atomic_helper_disable_plane(struct drm_plane *plane,
+				    struct drm_modeset_acquire_ctx *ctx);
 int __drm_atomic_helper_disable_plane(struct drm_plane *plane,
 		struct drm_plane_state *plane_state);
-int drm_atomic_helper_set_config(struct drm_mode_set *set);
+int drm_atomic_helper_set_config(struct drm_mode_set *set,
+				 struct drm_modeset_acquire_ctx *ctx);
 int __drm_atomic_helper_set_config(struct drm_mode_set *set,
 		struct drm_atomic_state *state);
 
 int drm_atomic_helper_disable_all(struct drm_device *dev,
 				  struct drm_modeset_acquire_ctx *ctx);
+void drm_atomic_helper_shutdown(struct drm_device *dev);
 struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev);
 int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state,
 					      struct drm_modeset_acquire_ctx *ctx);
@@ -122,13 +126,15 @@ int drm_atomic_helper_connector_set_property(struct drm_connector *connector,
 int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
 				struct drm_framebuffer *fb,
 				struct drm_pending_vblank_event *event,
-				uint32_t flags);
+				uint32_t flags,
+				struct drm_modeset_acquire_ctx *ctx);
 int drm_atomic_helper_page_flip_target(
 				struct drm_crtc *crtc,
 				struct drm_framebuffer *fb,
 				struct drm_pending_vblank_event *event,
 				uint32_t flags,
-				uint32_t target);
+				uint32_t target,
+				struct drm_modeset_acquire_ctx *ctx);
 int drm_atomic_helper_connector_dpms(struct drm_connector *connector,
 				     int mode);
 struct drm_encoder *
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index f8b766d70a46..941f57f311aa 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -133,6 +133,7 @@ struct drm_scdc {
  * This information is available in CEA-861-F extension blocks (like HF-VSDB).
  */
 struct drm_hdmi_info {
+	/** @scdc: sink's scdc support and capabilities */
 	struct drm_scdc scdc;
 };
 
@@ -655,7 +656,6 @@ struct drm_cmdline_mode {
  * @bad_edid_counter: track sinks that give us an EDID with invalid checksum
  * @edid_corrupt: indicates whether the last read EDID was corrupt
  * @debugfs_entry: debugfs directory for this connector
- * @state: current atomic state for this connector
  * @has_tile: is this connector connected to a tiled monitor
  * @tile_group: tile group for the connected monitor
  * @tile_is_single_monitor: whether the tile is one monitor housing
@@ -823,6 +823,21 @@ struct drm_connector {
 
 	struct dentry *debugfs_entry;
 
+	/**
+	 * @state:
+	 *
+	 * Current atomic state for this connector.
+	 *
+	 * This is protected by @drm_mode_config.connection_mutex. Note that
+	 * nonblocking atomic commits access the current connector state without
+	 * taking locks. Either by going through the &struct drm_atomic_state
+	 * pointers, see for_each_connector_in_state(),
+	 * for_each_oldnew_connector_in_state(),
+	 * for_each_old_connector_in_state() and
+	 * for_each_new_connector_in_state(). Or through careful ordering of
+	 * atomic commit operations as implemented in the atomic helpers, see
+	 * &struct drm_crtc_commit.
+	 */
 	struct drm_connector_state *state;
 
 	/* DisplayID bits */
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 6ef59da3fd8e..2be2192b1373 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -347,7 +347,8 @@ struct drm_crtc_funcs {
 	 *
 	 * 0 on success or a negative error code on failure.
 	 */
-	int (*set_config)(struct drm_mode_set *set);
+	int (*set_config)(struct drm_mode_set *set,
+			  struct drm_modeset_acquire_ctx *ctx);
 
 	/**
 	 * @page_flip:
@@ -405,7 +406,8 @@ struct drm_crtc_funcs {
 	int (*page_flip)(struct drm_crtc *crtc,
 			 struct drm_framebuffer *fb,
 			 struct drm_pending_vblank_event *event,
-			 uint32_t flags);
+			 uint32_t flags,
+			 struct drm_modeset_acquire_ctx *ctx);
 
 	/**
 	 * @page_flip_target:
@@ -423,7 +425,8 @@ struct drm_crtc_funcs {
 	int (*page_flip_target)(struct drm_crtc *crtc,
 				struct drm_framebuffer *fb,
 				struct drm_pending_vblank_event *event,
-				uint32_t flags, uint32_t target);
+				uint32_t flags, uint32_t target,
+				struct drm_modeset_acquire_ctx *ctx);
 
 	/**
 	 * @set_property:
@@ -590,9 +593,12 @@ struct drm_crtc_funcs {
 	 * When CRC generation is enabled, the driver should call
 	 * drm_crtc_add_crc_entry() at each frame, providing any information
 	 * that characterizes the frame contents in the crcN arguments, as
-	 * provided from the configured source. Drivers must accept a "auto"
+	 * provided from the configured source. Drivers must accept an "auto"
 	 * source name that will select a default source for this CRTC.
 	 *
+	 * Note that "auto" can depend upon the current modeset configuration,
+	 * e.g. it could pick an encoder or output specific CRC sampling point.
+	 *
 	 * This callback is optional if the driver does not support any CRC
 	 * generation functionality.
 	 *
@@ -696,10 +702,12 @@ struct drm_crtc {
 	/**
 	 * @mutex:
 	 *
-	 * This provides a read lock for the overall crtc state (mode, dpms
+	 * This provides a read lock for the overall CRTC state (mode, dpms
 	 * state, ...) and a write lock for everything which can be update
-	 * without a full modeset (fb, cursor data, crtc properties ...). A full
+	 * without a full modeset (fb, cursor data, CRTC properties ...). A full
 	 * modeset also need to grab &drm_mode_config.connection_mutex.
+	 *
+	 * For atomic drivers specifically this protects @state.
 	 */
 	struct drm_modeset_lock mutex;
 
@@ -745,6 +753,14 @@ struct drm_crtc {
 	 * @state:
 	 *
 	 * Current atomic state for this CRTC.
+	 *
+	 * This is protected by @mutex. Note that nonblocking atomic commits
+	 * access the current CRTC state without taking locks. Either by going
+	 * through the &struct drm_atomic_state pointers, see
+	 * for_each_crtc_in_state(), for_each_oldnew_crtc_in_state(),
+	 * for_each_old_crtc_in_state() and for_each_new_crtc_in_state(). Or
+	 * through careful ordering of atomic commit operations as implemented
+	 * in the atomic helpers, see &struct drm_crtc_commit.
 	 */
 	struct drm_crtc_state *state;
 
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index d026f5017c33..43505c7b2b3f 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -43,18 +43,19 @@
 #include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_modeset_helper.h>
 
-extern void drm_helper_disable_unused_functions(struct drm_device *dev);
-extern int drm_crtc_helper_set_config(struct drm_mode_set *set);
-extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
-				     struct drm_display_mode *mode,
-				     int x, int y,
-				     struct drm_framebuffer *old_fb);
-extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
-extern bool drm_helper_encoder_in_use(struct drm_encoder *encoder);
+void drm_helper_disable_unused_functions(struct drm_device *dev);
+int drm_crtc_helper_set_config(struct drm_mode_set *set,
+			       struct drm_modeset_acquire_ctx *ctx);
+bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
+			      struct drm_display_mode *mode,
+			      int x, int y,
+			      struct drm_framebuffer *old_fb);
+bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
+bool drm_helper_encoder_in_use(struct drm_encoder *encoder);
 
-extern int drm_helper_connector_dpms(struct drm_connector *connector, int mode);
+int drm_helper_connector_dpms(struct drm_connector *connector, int mode);
 
-extern void drm_helper_resume_force_mode(struct drm_device *dev);
+void drm_helper_resume_force_mode(struct drm_device *dev);
 
 int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
 			     struct drm_display_mode *adjusted_mode, int x, int y,
@@ -63,15 +64,15 @@ int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 				  struct drm_framebuffer *old_fb);
 
 /* drm_probe_helper.c */
-extern int drm_helper_probe_single_connector_modes(struct drm_connector
-						   *connector, uint32_t maxX,
-						   uint32_t maxY);
-extern void drm_kms_helper_poll_init(struct drm_device *dev);
-extern void drm_kms_helper_poll_fini(struct drm_device *dev);
-extern bool drm_helper_hpd_irq_event(struct drm_device *dev);
-extern void drm_kms_helper_hotplug_event(struct drm_device *dev);
+int drm_helper_probe_single_connector_modes(struct drm_connector
+					    *connector, uint32_t maxX,
+					    uint32_t maxY);
+void drm_kms_helper_poll_init(struct drm_device *dev);
+void drm_kms_helper_poll_fini(struct drm_device *dev);
+bool drm_helper_hpd_irq_event(struct drm_device *dev);
+void drm_kms_helper_hotplug_event(struct drm_device *dev);
 
-extern void drm_kms_helper_poll_disable(struct drm_device *dev);
-extern void drm_kms_helper_poll_enable(struct drm_device *dev);
+void drm_kms_helper_poll_disable(struct drm_device *dev);
+void drm_kms_helper_poll_enable(struct drm_device *dev);
 
 #endif
diff --git a/include/drm/drm_debugfs.h b/include/drm/drm_debugfs.h
new file mode 100644
index 000000000000..ac0f75df1ac9
--- /dev/null
+++ b/include/drm/drm_debugfs.h
@@ -0,0 +1,101 @@
+/*
+ * Internal Header for the Direct Rendering Manager
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * Copyright (c) 2009-2010, Code Aurora Forum.
+ * All rights reserved.
+ *
+ * Author: Rickard E. (Rik) Faith <faith@valinux.com>
+ * Author: Gareth Hughes <gareth@valinux.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DRM_DEBUGFS_H_
+#define _DRM_DEBUGFS_H_
+
+/**
+ * struct drm_info_list - debugfs info list entry
+ *
+ * This structure represents a debugfs file to be created by the drm
+ * core.
+ */
+struct drm_info_list {
+	/** @name: file name */
+	const char *name;
+	/**
+	 * @show:
+	 *
+	 * Show callback. &seq_file->private will be set to the &struct
+	 * drm_info_node corresponding to the instance of this info on a given
+	 * &struct drm_minor.
+	 */
+	int (*show)(struct seq_file*, void*);
+	/** @driver_features: Required driver features for this entry */
+	u32 driver_features;
+	/** @data: Driver-private data, should not be device-specific. */
+	void *data;
+};
+
+/**
+ * struct drm_info_node - Per-minor debugfs node structure
+ *
+ * This structure represents a debugfs file, as an instantiation of a &struct
+ * drm_info_list on a &struct drm_minor.
+ *
+ * FIXME:
+ *
+ * No it doesn't make a hole lot of sense that we duplicate debugfs entries for
+ * both the render and the primary nodes, but that's how this has organically
+ * grown. It should probably be fixed, with a compatibility link, if needed.
+ */
+struct drm_info_node {
+	/** @minor: &struct drm_minor for this node. */
+	struct drm_minor *minor;
+	/** @info_ent: template for this node. */
+	const struct drm_info_list *info_ent;
+	/* private: */
+	struct list_head list;
+	struct dentry *dent;
+};
+
+#if defined(CONFIG_DEBUG_FS)
+int drm_debugfs_create_files(const struct drm_info_list *files,
+			     int count, struct dentry *root,
+			     struct drm_minor *minor);
+int drm_debugfs_remove_files(const struct drm_info_list *files,
+			     int count, struct drm_minor *minor);
+#else
+static inline int drm_debugfs_create_files(const struct drm_info_list *files,
+					   int count, struct dentry *root,
+					   struct drm_minor *minor)
+{
+	return 0;
+}
+
+static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
+					   int count, struct drm_minor *minor)
+{
+	return 0;
+}
+#endif
+
+#endif /* _DRM_DEBUGFS_H_ */
diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
index f4b4d154b98e..5b024764666c 100644
--- a/include/drm/drm_dp_mst_helper.h
+++ b/include/drm/drm_dp_mst_helper.h
@@ -479,18 +479,6 @@ struct drm_dp_mst_topology_mgr {
 	 * @pbn_div: PBN to slots divisor.
 	 */
 	int pbn_div;
-	/**
-	 * @total_slots: Total slots that can be allocated.
-	 */
-	int total_slots;
-	/**
-	 * @avail_slots: Still available slots that can be allocated.
-	 */
-	int avail_slots;
-	/**
-	 * @total_pbn: Total PBN count.
-	 */
-	int total_pbn;
 
 	/**