Merge tag 'drm-i915-get-eld' of tiwai/sound into drm-intel-next-queued

Add get_eld audio component for i915/HD-audio

Currently, the HDMI/DP audio status and ELD are notified and obtained
via the hardware-level communication over HD-audio unsolicited event
and verbs although the graphics driver holds the exactly same
information.  As we already have a notification via audio component,
this is another step forward; namely, the audio driver may fetch
directly the audio status and ELD via the new component op.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

13 files changed, 194 insertions, 42 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 0b921ae06cd8..a8e01aaca087 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -309,6 +309,11 @@ struct drm_file {
 	unsigned universal_planes:1;
 	/* true if client understands atomic properties */
 	unsigned atomic:1;
+	/*
+	 * This client is allowed to gain master privileges for @master.
+	 * Protected by struct drm_device::master_mutex.
+	 */
+	unsigned allowed_master:1;
 
 	struct pid *pid;
 	kuid_t uid;
@@ -344,6 +349,8 @@ struct drm_file {
 	struct list_head event_list;
 	int event_space;
 
+	struct mutex event_read_lock;
+
 	struct drm_prime_file_private prime;
 };
 
@@ -910,6 +917,7 @@ extern int drm_open(struct inode *inode, struct file *filp);
 extern ssize_t drm_read(struct file *filp, char __user *buffer,
 			size_t count, loff_t *offset);
 extern int drm_release(struct inode *inode, struct file *filp);
+extern int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv);
 
 				/* Mapping support (drm_vm.h) */
 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
@@ -947,6 +955,10 @@ extern void drm_send_vblank_event(struct drm_device *dev, unsigned int pipe,
 				  struct drm_pending_vblank_event *e);
 extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc,
 				       struct drm_pending_vblank_event *e);
+extern void drm_arm_vblank_event(struct drm_device *dev, unsigned int pipe,
+				 struct drm_pending_vblank_event *e);
+extern void drm_crtc_arm_vblank_event(struct drm_crtc *crtc,
+				      struct drm_pending_vblank_event *e);
 extern bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe);
 extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc);
 extern int drm_vblank_get(struct drm_device *dev, unsigned int pipe);
@@ -1111,4 +1123,7 @@ static __inline__ bool drm_can_sleep(void)
 	return true;
 }
 
+/* helper for handling conditionals in various for_each macros */
+#define for_each_if(condition) if (!(condition)) {} else
+
 #endif
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 4b74c97d297a..d8576ac55693 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -149,7 +149,7 @@ int __must_check drm_atomic_async_commit(struct drm_atomic_state *state);
 	     ((connector) = (state)->connectors[__i],			\
 	     (connector_state) = (state)->connector_states[__i], 1); 	\
 	     (__i)++)							\
-		if (connector)
+		for_each_if (connector)
 
 #define for_each_crtc_in_state(state, crtc, crtc_state, __i)	\
 	for ((__i) = 0;						\
@@ -157,7 +157,7 @@ int __must_check drm_atomic_async_commit(struct drm_atomic_state *state);
 	     ((crtc) = (state)->crtcs[__i],			\
 	     (crtc_state) = (state)->crtc_states[__i], 1);	\
 	     (__i)++)						\
-		if (crtc_state)
+		for_each_if (crtc_state)
 
 #define for_each_plane_in_state(state, plane, plane_state, __i)		\
 	for ((__i) = 0;							\
@@ -165,7 +165,7 @@ int __must_check drm_atomic_async_commit(struct drm_atomic_state *state);
 	     ((plane) = (state)->planes[__i],				\
 	     (plane_state) = (state)->plane_states[__i], 1);		\
 	     (__i)++)							\
-		if (plane_state)
+		for_each_if (plane_state)
 static inline bool
 drm_atomic_crtc_needs_modeset(struct drm_crtc_state *state)
 {
diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
index 8cba54a2a0a0..a286cce98720 100644
--- a/include/drm/drm_atomic_helper.h
+++ b/include/drm/drm_atomic_helper.h
@@ -62,6 +62,8 @@ void drm_atomic_helper_commit_planes(struct drm_device *dev,
 void drm_atomic_helper_cleanup_planes(struct drm_device *dev,
 				      struct drm_atomic_state *old_state);
 void drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state);
+void drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc *crtc,
+					      bool atomic);
 
 void drm_atomic_helper_swap_state(struct drm_device *dev,
 				  struct drm_atomic_state *state);
@@ -81,6 +83,12 @@ int drm_atomic_helper_set_config(struct drm_mode_set *set);
 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);
+struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev);
+int drm_atomic_helper_resume(struct drm_device *dev,
+			     struct drm_atomic_state *state);
+
 int drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc,
 					struct drm_property *property,
 					uint64_t val);
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 3f0c6909dda1..4765df331002 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -85,7 +85,11 @@ static inline uint64_t I642U64(int64_t val)
 	return (uint64_t)*((uint64_t *)&val);
 }
 
-/* rotation property bits */
+/*
+ * Rotation property bits. DRM_ROTATE_<degrees> rotates the image by the
+ * specified amount in degrees in counter clockwise direction. DRM_REFLECT_X and
+ * DRM_REFLECT_Y reflects the image along the specified axis prior to rotation
+ */
 #define DRM_ROTATE_MASK 0x0f
 #define DRM_ROTATE_0	0
 #define DRM_ROTATE_90	1
@@ -992,7 +996,7 @@ struct drm_mode_set {
 struct drm_mode_config_funcs {
 	struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
 					     struct drm_file *file_priv,
-					     struct drm_mode_fb_cmd2 *mode_cmd);
+					     const struct drm_mode_fb_cmd2 *mode_cmd);
 	void (*output_poll_changed)(struct drm_device *dev);
 
 	int (*atomic_check)(struct drm_device *dev,
@@ -1166,7 +1170,7 @@ struct drm_mode_config {
  */
 #define drm_for_each_plane_mask(plane, dev, plane_mask) \
 	list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \
-		if ((plane_mask) & (1 << drm_plane_index(plane)))
+		for_each_if ((plane_mask) & (1 << drm_plane_index(plane)))
 
 
 #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
@@ -1543,7 +1547,7 @@ static inline struct drm_property *drm_property_find(struct drm_device *dev,
 /* Plane list iterator for legacy (overlay only) planes. */
 #define drm_for_each_legacy_plane(plane, dev) \
 	list_for_each_entry(plane, &(dev)->mode_config.plane_list, head) \
-		if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+		for_each_if (plane->type == DRM_PLANE_TYPE_OVERLAY)
 
 #define drm_for_each_plane(plane, dev) \
 	list_for_each_entry(plane, &(dev)->mode_config.plane_list, head)
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index 3febb4b9fce9..e22ab29d2d00 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -197,7 +197,7 @@ extern int drm_helper_connector_dpms(struct drm_connector *connector, int mode);
 extern void drm_helper_move_panel_connectors_to_head(struct drm_device *);
 
 extern void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
-					   struct drm_mode_fb_cmd2 *mode_cmd);
+					   const struct drm_mode_fb_cmd2 *mode_cmd);
 
 static inline void drm_crtc_helper_add(struct drm_crtc *crtc,
 				       const struct drm_crtc_helper_funcs *funcs)
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index bb9d0deca07c..1252108da0ef 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -455,16 +455,52 @@
 # define DP_EDP_14			    0x03
 
 #define DP_EDP_GENERAL_CAP_1		    0x701
+# define DP_EDP_TCON_BACKLIGHT_ADJUSTMENT_CAP		(1 << 0)
+# define DP_EDP_BACKLIGHT_PIN_ENABLE_CAP		(1 << 1)
+# define DP_EDP_BACKLIGHT_AUX_ENABLE_CAP		(1 << 2)
+# define DP_EDP_PANEL_SELF_TEST_PIN_ENABLE_CAP		(1 << 3)
+# define DP_EDP_PANEL_SELF_TEST_AUX_ENABLE_CAP		(1 << 4)
+# define DP_EDP_FRC_ENABLE_CAP				(1 << 5)
+# define DP_EDP_COLOR_ENGINE_CAP			(1 << 6)
+# define DP_EDP_SET_POWER_CAP				(1 << 7)
 
 #define DP_EDP_BACKLIGHT_ADJUSTMENT_CAP     0x702
+# define DP_EDP_BACKLIGHT_BRIGHTNESS_PWM_PIN_CAP	(1 << 0)
+# define DP_EDP_BACKLIGHT_BRIGHTNESS_AUX_SET_CAP	(1 << 1)
+# define DP_EDP_BACKLIGHT_BRIGHTNESS_BYTE_COUNT		(1 << 2)
+# define DP_EDP_BACKLIGHT_AUX_PWM_PRODUCT_CAP		(1 << 3)
+# define DP_EDP_BACKLIGHT_FREQ_PWM_PIN_PASSTHRU_CAP	(1 << 4)
+# define DP_EDP_BACKLIGHT_FREQ_AUX_SET_CAP		(1 << 5)
+# define DP_EDP_DYNAMIC_BACKLIGHT_CAP			(1 << 6)
+# define DP_EDP_VBLANK_BACKLIGHT_UPDATE_CAP		(1 << 7)
 
 #define DP_EDP_GENERAL_CAP_2		    0x703
+# define DP_EDP_OVERDRIVE_ENGINE_ENABLED		(1 << 0)
 
 #define DP_EDP_GENERAL_CAP_3		    0x704    /* eDP 1.4 */
+# define DP_EDP_X_REGION_CAP_MASK			(0xf << 0)
+# define DP_EDP_X_REGION_CAP_SHIFT			0
+# define DP_EDP_Y_REGION_CAP_MASK			(0xf << 4)
+# define DP_EDP_Y_REGION_CAP_SHIFT			4
 
 #define DP_EDP_DISPLAY_CONTROL_REGISTER     0x720
+# define DP_EDP_BACKLIGHT_ENABLE			(1 << 0)
+# define DP_EDP_BLACK_VIDEO_ENABLE			(1 << 1)
+# define DP_EDP_FRC_ENABLE				(1 << 2)
+# define DP_EDP_COLOR_ENGINE_ENABLE			(1 << 3)
+# define DP_EDP_VBLANK_BACKLIGHT_UPDATE_ENABLE		(1 << 7)
 
 #define DP_EDP_BACKLIGHT_MODE_SET_REGISTER  0x721
+# define DP_EDP_BACKLIGHT_CONTROL_MODE_MASK		(3 << 0)
+# define DP_EDP_BACKLIGHT_CONTROL_MODE_PWM		(0 << 0)
+# define DP_EDP_BACKLIGHT_CONTROL_MODE_PRESET		(1 << 0)
+# define DP_EDP_BACKLIGHT_CONTROL_MODE_DPCD		(2 << 0)
+# define DP_EDP_BACKLIGHT_CONTROL_MODE_PRODUCT		(3 << 0)
+# define DP_EDP_BACKLIGHT_FREQ_PWM_PIN_PASSTHRU_ENABLE	(1 << 2)
+# define DP_EDP_BACKLIGHT_FREQ_AUX_SET_ENABLE		(1 << 3)
+# define DP_EDP_DYNAMIC_BACKLIGHT_ENABLE		(1 << 4)
+# define DP_EDP_REGIONAL_BACKLIGHT_ENABLE		(1 << 5)
+# define DP_EDP_UPDATE_REGION_BRIGHTNESS		(1 << 6) /* eDP 1.4 */
 
 #define DP_EDP_BACKLIGHT_BRIGHTNESS_MSB     0x722
 #define DP_EDP_BACKLIGHT_BRIGHTNESS_LSB     0x723
diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h
index c54cf3d4a03f..be62bd321e75 100644
--- a/include/drm/drm_fb_cma_helper.h
+++ b/include/drm/drm_fb_cma_helper.h
@@ -18,7 +18,7 @@ void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma);
 void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma);
 
 struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev,
-	struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd);
+	struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd);
 
 struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb,
 	unsigned int plane);
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index 15e7f007380f..0b3e11ab8757 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -35,76 +35,129 @@
  */
 
 /**
- * This structure defines the drm_mm memory object, which will be used by the
- * DRM for its buffer objects.
+ * struct drm_gem_object - GEM buffer object
+ *
+ * This structure defines the generic parts for GEM buffer objects, which are
+ * mostly around handling mmap and userspace handles.
+ *
+ * Buffer objects are often abbreviated to BO.
  */
 struct drm_gem_object {
-	/** Reference count of this object */
+	/**
+	 * @refcount:
+	 *
+	 * Reference count of this object
+	 *
+	 * Please use drm_gem_object_reference() to acquire and
+	 * drm_gem_object_unreference() or drm_gem_object_unreference_unlocked()
+	 * to release a reference to a GEM buffer object.
+	 */
 	struct kref refcount;
 
 	/**
-	 * handle_count - gem file_priv handle count of this object
+	 * @handle_count:
+	 *
+	 * This is the GEM file_priv handle count of this object.
 	 *
 	 * Each handle also holds a reference. Note that when the handle_count
 	 * drops to 0 any global names (e.g. the id in the flink namespace) will
 	 * be cleared.
 	 *
 	 * Protected by dev->object_name_lock.
-	 * */
+	 */
 	unsigned handle_count;
 
-	/** Related drm device */
+	/**
+	 * @dev: DRM dev this object belongs to.
+	 */
 	struct drm_device *dev;
 
-	/** File representing the shmem storage */
+	/**
+	 * @filp:
+	 *
+	 * SHMEM file node used as backing storage for swappable buffer objects.
+	 * GEM also supports driver private objects with driver-specific backing
+	 * storage (contiguous CMA memory, special reserved blocks). In this
+	 * case @filp is NULL.
+	 */
 	struct file *filp;
 
-	/* Mapping info for this object */
+	/**
+	 * @vma_node:
+	 *
+	 * Mapping info for this object to support mmap. Drivers are supposed to
+	 * allocate the mmap offset using drm_gem_create_mmap_offset(). The
+	 * offset itself can be retrieved using drm_vma_node_offset_addr().
+	 *
+	 * Memory mapping itself is handled by drm_gem_mmap(), which also checks
+	 * that userspace is allowed to access the object.
+	 */
 	struct drm_vma_offset_node vma_node;
 
 	/**
+	 * @size:
+	 *
 	 * Size of the object, in bytes.  Immutable over the object's
 	 * lifetime.
 	 */
 	size_t size;
 
 	/**
+	 * @name:
+	 *
 	 * Global name for this object, starts at 1. 0 means unnamed.
-	 * Access is covered by the object_name_lock in the related drm_device
+	 * Access is covered by dev->object_name_lock. This is used by the GEM_FLINK
+	 * and GEM_OPEN ioctls.
 	 */
 	int name;
 
 	/**
-	 * Memory domains. These monitor which caches contain read/write data
+	 * @read_domains:
+	 *
+	 * Read memory domains. These monitor which caches contain read/write data
 	 * related to the object. When transitioning from one set of domains
 	 * to another, the driver is called to ensure that caches are suitably
-	 * flushed and invalidated
+	 * flushed and invalidated.
 	 */
 	uint32_t read_domains;
+
+	/**
+	 * @write_domain: Corresponding unique write memory domain.
+	 */
 	uint32_t write_domain;
 
 	/**
+	 * @pending_read_domains:
+	 *
 	 * While validating an exec operation, the
 	 * new read/write domain values are computed here.
 	 * They will be transferred to the above values
 	 * at the point that any cache flushing occurs
 	 */
 	uint32_t pending_read_domains;
+
+	/**
+	 * @pending_write_domain: Write domain similar to @pending_read_domains.
+	 */
 	uint32_t pending_write_domain;
 
 	/**
-	 * dma_buf - dma buf associated with this GEM object
+	 * @dma_buf:
+	 *
+	 * dma-buf associated with this GEM object.
 	 *
 	 * Pointer to the dma-buf associated with this gem object (either
 	 * through importing or exporting). We break the resulting reference
 	 * loop when the last gem handle for this object is released.
 	 *
-	 * Protected by obj->object_name_lock
+	 * Protected by obj->object_name_lock.
 	 */
 	struct dma_buf *dma_buf;
 
 	/**
-	 * import_attach - dma buf attachment backing this object
+	 * @import_attach:
+	 *
+	 * dma-buf attachment backing this object.
 	 *
 	 * Any foreign dma_buf imported as a gem object has this set to the
 	 * attachment point for the device. This is invariant over the lifetime
@@ -133,12 +186,30 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
 		     struct vm_area_struct *vma);
 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 
+/**
+ * drm_gem_object_reference - acquire a GEM BO reference
+ * @obj: GEM buffer object
+ *
+ * This acquires additional reference to @obj. It is illegal to call this
+ * without already holding a reference. No locks required.
+ */
 static inline void
 drm_gem_object_reference(struct drm_gem_object *obj)
 {
 	kref_get(&obj->refcount);
 }
 
+/**
+ * drm_gem_object_unreference - release a GEM BO reference
+ * @obj: GEM buffer object
+ *
+ * This releases a reference to @obj. Callers must hold the dev->struct_mutex
+ * lock when calling this function, even when the driver doesn't use
+ * dev->struct_mutex for anything.
+ *
+ * For drivers not encumbered with legacy locking use
+ * drm_gem_object_unreference_unlocked() instead.
+ */
 static inline void
 drm_gem_object_unreference(struct drm_gem_object *obj)
 {
@@ -149,6 +220,13 @@ drm_gem_object_unreference(struct drm_gem_object *obj)
 	}
 }
 
+/**
+ * drm_gem_object_unreference_unlocked - release a GEM BO reference
+ * @obj: GEM buffer object
+ *
+ * This releases a reference to @obj. Callers must not hold the
+ * dev->struct_mutex lock when calling this function.
+ */
 static inline void
 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
 {
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
index 0de6290df4da..fc65118e5077 100644
--- a/include/drm/drm_mm.h
+++ b/include/drm/drm_mm.h
@@ -148,8 +148,7 @@ static inline u64 drm_mm_hole_node_start(struct drm_mm_node *hole_node)
 
 static inline u64 __drm_mm_hole_node_end(struct drm_mm_node *hole_node)
 {
-	return list_entry(hole_node->node_list.next,
-			  struct drm_mm_node, node_list)->start;
+	return list_next_entry(hole_node, node_list)->start;
 }
 
 /**
@@ -180,6 +179,14 @@ static inline u64 drm_mm_hole_node_end(struct drm_mm_node *hole_node)
 						&(mm)->head_node.node_list, \
 						node_list)
 
+#define __drm_mm_for_each_hole(entry, mm, hole_start, hole_end, backwards) \
+	for (entry = list_entry((backwards) ? (mm)->hole_stack.prev : (mm)->hole_stack.next, struct drm_mm_node, hole_stack); \
+	     &entry->hole_stack != &(mm)->hole_stack ? \
+	     hole_start = drm_mm_hole_node_start(entry), \
+	     hole_end = drm_mm_hole_node_end(entry), \
+	     1 : 0; \
+	     entry = list_entry((backwards) ? entry->hole_stack.prev : entry->hole_stack.next, struct drm_mm_node, hole_stack))
+
 /**
  * drm_mm_for_each_hole - iterator to walk over all holes
  * @entry: drm_mm_node used internally to track progress
@@ -200,20 +207,7 @@ static inline u64 drm_mm_hole_node_end(struct drm_mm_node *hole_node)
  * going backwards.
  */
 #define drm_mm_for_each_hole(entry, mm, hole_start, hole_end) \
-	for (entry = list_entry((mm)->hole_stack.next, struct drm_mm_node, hole_stack); \
-	     &entry->hole_stack != &(mm)->hole_stack ? \
-	     hole_start = drm_mm_hole_node_start(entry), \
-	     hole_end = drm_mm_hole_node_end(entry), \
-	     1 : 0; \
-	     entry = list_entry(entry->hole_stack.next, struct drm_mm_node, hole_stack))
-
-#define __drm_mm_for_each_hole(entry, mm, hole_start, hole_end, backwards) \
-	for (entry = list_entry((backwards) ? (mm)->hole_stack.prev : (mm)->hole_stack.next, struct drm_mm_node, hole_stack); \
-	     &entry->hole_stack != &(mm)->hole_stack ? \
-	     hole_start = drm_mm_hole_node_start(entry), \
-	     hole_end = drm_mm_hole_node_end(entry), \
-	     1 : 0; \
-	     entry = list_entry((backwards) ? entry->hole_stack.prev : entry->hole_stack.next, struct drm_mm_node, hole_stack))
+	__drm_mm_for_each_hole(entry, mm, hole_start, hole_end, 0)
 
 /*
  * Basic range manager support (drm_mm.c)
diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
index 08a8cac9e555..f9115aee43f4 100644
--- a/include/drm/drm_modes.h
+++ b/include/drm/drm_modes.h
@@ -222,6 +222,8 @@ struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
 					    const struct drm_display_mode *mode);
 bool drm_mode_equal(const struct drm_display_mode *mode1,
 		    const struct drm_display_mode *mode2);
+bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1,
+			      const struct drm_display_mode *mode2);
 bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1,
 					const struct drm_display_mode *mode2);
 
diff --git a/include/drm/drm_modeset_lock.h b/include/drm/drm_modeset_lock.h
index 94938d89347c..c5576fbcb909 100644
--- a/include/drm/drm_modeset_lock.h
+++ b/include/drm/drm_modeset_lock.h
@@ -138,7 +138,7 @@ void drm_warn_on_modeset_not_all_locked(struct drm_device *dev);
 struct drm_modeset_acquire_ctx *
 drm_modeset_legacy_acquire_ctx(struct drm_crtc *crtc);
 
-int drm_modeset_lock_all_crtcs(struct drm_device *dev,
-		struct drm_modeset_acquire_ctx *ctx);
+int drm_modeset_lock_all_ctx(struct drm_device *dev,
+			     struct drm_modeset_acquire_ctx *ctx);
 
 #endif /* DRM_MODESET_LOCK_H_ */
diff --git a/include/drm/drm_rect.h b/include/drm/drm_rect.h
index 26bb55e9e8b6..83bb156d4356 100644
--- a/include/drm/drm_rect.h
+++ b/include/drm/drm_rect.h
@@ -162,7 +162,8 @@ int drm_rect_calc_hscale_relaxed(struct drm_rect *src,
 int drm_rect_calc_vscale_relaxed(struct drm_rect *src,
 				 struct drm_rect *dst,
 				 int min_vscale, int max_vscale);
-void drm_rect_debug_print(const struct drm_rect *r, bool fixed_point);
+void drm_rect_debug_print(const char *prefix,
+			  const struct drm_rect *r, bool fixed_point);
 void drm_rect_rotate(struct drm_rect *r,
 		     int width, int height,
 		     unsigned int rotation);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h
index fab13851f95a..b46fa0ef3005 100644
--- a/include/drm/i915_component.h
+++ b/include/drm/i915_component.h
@@ -65,6 +65,20 @@ struct i915_audio_component_ops {
 	 * sample rate, it will call this function to set n/cts
 	 */
 	int (*sync_audio_rate)(struct device *, int port, int rate);
+	/**
+	 * @get_eld: fill the audio state and ELD bytes for the given port
+	 *
+	 * Called from audio driver to get the HDMI/DP audio state of the given
+	 * digital port, and also fetch ELD bytes to the given pointer.
+	 *
+	 * It returns the byte size of the original ELD (not the actually
+	 * copied size), zero for an invalid ELD, or a negative error code.
+	 *
+	 * Note that the returned size may be over @max_bytes.  Then it
+	 * implies that only a part of ELD has been copied to the buffer.
+	 */
+	int (*get_eld)(struct device *, int port, bool *enabled,
+		       unsigned char *buf, int max_bytes);
 };
 
 /**