Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next

Last drm-misc-next pull req for 4.12

Core changes:
 - fb_helper checkpatch cleanup and simplified _add_one_connector() (Thierry)
 - drm_ioctl and drm_sysfs improved/gained documentation (Daniel)
 - [ABI] Repurpose reserved field in drm_event_vblank for crtc_id (Ander)
 - Plumb acquire ctx through legacy paths to avoid lock_all and legacy_backoff
   (Daniel)
 - Add connector_atomic_check to check conn constraints on modeset (Maarten)
 - Add drm_of_find_panel_or_bridge to remove boilerplate in drivers (Rob)

Driver changes:
 - meson moved to drm-misc (Neil)
 - Added support for Amlogic GX SoCs in dw-hdmi (Neil)
 - Rockchip unbind actually cleans up the things bind initializes (Jeffy)
 - A couple misc fixes in virtio, dw-hdmi

NOTE: this also includes a backmerge of drm-next as well rc5 (we needed vmwgfx
      as well as the new synopsys media formats)

* tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc: (77 commits)
  Revert "drm: Don't allow interruptions when opening debugfs/crc"
  drm: Only take cursor locks when the cursor plane exists
  drm/vmwgfx: Fix fbdev emulation using legacy functions
  drm/rockchip: Shutdown all crtcs when unbinding drm
  drm/rockchip: Reorder drm bind/unbind sequence
  drm/rockchip: analogix_dp: Disable clock when unbinding
  drm/rockchip: vop: Unprepare clocks when unbinding
  drm/rockchip: vop: Enable pm domain before vop_initial
  drm/rockchip: cdn-dp: Don't unregister audio dev when unbinding
  drm/rockchip: cdn-dp: Don't try to release firmware when not loaded
  drm: bridge: analogix: Destroy connector & encoder when unbinding
  drm: bridge: analogix: Disable clock when unbinding
  drm: bridge: analogix: Unregister dp aux when unbinding
  drm: bridge: analogix: Detach panel when unbinding analogix dp
  drm: Don't allow interruptions when opening debugfs/crc
  drm/virtio: don't leak bo on drm_gem_object_init failure
  drm: bridge: dw-hdmi: fix input format/encoding from plat_data
  drm: omap: use common OF graph helpers
  drm: convert drivers to use drm_of_find_panel_or_bridge
  drm: convert drivers to use of_graph_get_remote_node
  ...

13 files changed, 271 insertions, 42 deletions

diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index bcceee8114a4..ed599bea3f6c 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -14,6 +14,67 @@
 
 struct dw_hdmi;
 
+/**
+ * DOC: Supported input formats and encodings
+ *
+ * Depending on the Hardware configuration of the Controller IP, it supports
+ * a subset of the following input formats and encodings on its internal
+ * 48bit bus.
+ *
+ * +----------------------+----------------------------------+------------------------------+
+ * + Format Name          + Format Code                      + Encodings                    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + RGB 4:4:4 8bit       + ``MEDIA_BUS_FMT_RGB888_1X24``    + ``V4L2_YCBCR_ENC_DEFAULT``   +
+ * +----------------------+----------------------------------+------------------------------+
+ * + RGB 4:4:4 10bits     + ``MEDIA_BUS_FMT_RGB101010_1X30`` + ``V4L2_YCBCR_ENC_DEFAULT``   +
+ * +----------------------+----------------------------------+------------------------------+
+ * + RGB 4:4:4 12bits     + ``MEDIA_BUS_FMT_RGB121212_1X36`` + ``V4L2_YCBCR_ENC_DEFAULT``   +
+ * +----------------------+----------------------------------+------------------------------+
+ * + RGB 4:4:4 16bits     + ``MEDIA_BUS_FMT_RGB161616_1X48`` + ``V4L2_YCBCR_ENC_DEFAULT``   +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:4:4 8bit     + ``MEDIA_BUS_FMT_YUV8_1X24``      + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV601``  +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV709``  +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:4:4 10bits   + ``MEDIA_BUS_FMT_YUV10_1X30``     + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV601``  +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV709``  +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:4:4 12bits   + ``MEDIA_BUS_FMT_YUV12_1X36``     + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV601``  +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV709``  +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:4:4 16bits   + ``MEDIA_BUS_FMT_YUV16_1X48``     + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV601``  +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV709``  +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:2 8bit     + ``MEDIA_BUS_FMT_UYVY8_1X16``     + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:2 10bits   + ``MEDIA_BUS_FMT_UYVY10_1X20``    + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:2 12bits   + ``MEDIA_BUS_FMT_UYVY12_1X24``    + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:0 8bit     + ``MEDIA_BUS_FMT_UYYVYY8_0_5X24`` + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:0 10bits   + ``MEDIA_BUS_FMT_UYYVYY10_0_5X30``+ ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:0 12bits   + ``MEDIA_BUS_FMT_UYYVYY12_0_5X36``+ ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:0 16bits   + ``MEDIA_BUS_FMT_UYYVYY16_0_5X48``+ ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ */
+
 enum {
 	DW_HDMI_RES_8,
 	DW_HDMI_RES_10,
@@ -56,12 +117,17 @@ struct dw_hdmi_phy_ops {
 		    struct drm_display_mode *mode);
 	void (*disable)(struct dw_hdmi *hdmi, void *data);
 	enum drm_connector_status (*read_hpd)(struct dw_hdmi *hdmi, void *data);
+	void (*update_hpd)(struct dw_hdmi *hdmi, void *data,
+			   bool force, bool disabled, bool rxsense);
+	void (*setup_hpd)(struct dw_hdmi *hdmi, void *data);
 };
 
 struct dw_hdmi_plat_data {
 	struct regmap *regm;
 	enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
 					   struct drm_display_mode *mode);
+	unsigned long input_bus_format;
+	unsigned long input_bus_encoding;
 
 	/* Vendor PHY support */
 	const struct dw_hdmi_phy_ops *phy_ops;
@@ -84,6 +150,8 @@ void dw_hdmi_unbind(struct device *dev);
 int dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder,
 		 const struct dw_hdmi_plat_data *plat_data);
 
+void dw_hdmi_setup_rx_sense(struct device *dev, bool hpd, bool rx_sense);
+
 void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate);
 void dw_hdmi_audio_enable(struct dw_hdmi *hdmi);
 void dw_hdmi_audio_disable(struct dw_hdmi *hdmi);
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 3bfafcdb8710..e1daa4f343cd 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -80,6 +80,7 @@
 #include <drm/drm_file.h>
 #include <drm/drm_debugfs.h>
 #include <drm/drm_ioctl.h>
+#include <drm/drm_sysfs.h>
 
 struct module;
 
@@ -512,10 +513,6 @@ static inline int drm_device_is_unplugged(struct drm_device *dev)
  * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
  */
 
-			       /* sysfs support (drm_sysfs.c) */
-extern void drm_sysfs_hotplug_event(struct drm_device *dev);
-
-
 /*@}*/
 
 /* returns true if currently okay to sleep */
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index fd33ed5eaeb4..788daf756f48 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -160,7 +160,6 @@ struct __drm_connnectors_state {
  * @dev: parent DRM device
  * @allow_modeset: allow full modeset
  * @legacy_cursor_update: hint to enforce legacy cursor IOCTL semantics
- * @legacy_set_config: Disable conflicting encoders instead of failing with -EINVAL.
  * @planes: pointer to array of structures with per-plane data
  * @crtcs: pointer to array of CRTC pointers
  * @num_connector: size of the @connectors and @connector_states arrays
@@ -173,7 +172,6 @@ struct drm_atomic_state {
 	struct drm_device *dev;
 	bool allow_modeset : 1;
 	bool legacy_cursor_update : 1;
-	bool legacy_set_config : 1;
 	struct __drm_planes_state *planes;
 	struct __drm_crtcs_state *crtcs;
 	int num_connector;
diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
index fd395dc050ee..f0a8678ae98e 100644
--- a/include/drm/drm_atomic_helper.h
+++ b/include/drm/drm_atomic_helper.h
@@ -176,7 +176,8 @@ void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
 					  struct drm_connector_state *state);
 int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,
 				       u16 *red, u16 *green, u16 *blue,
-				       uint32_t size);
+				       uint32_t size,
+				       struct drm_modeset_acquire_ctx *ctx);
 
 /**
  * drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 8250062eb8a5..4eeda120e46d 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -32,6 +32,7 @@
 struct drm_device;
 
 struct drm_connector_helper_funcs;
+struct drm_modeset_acquire_ctx;
 struct drm_device;
 struct drm_crtc;
 struct drm_encoder;
@@ -382,6 +383,11 @@ struct drm_connector_funcs {
 	 * the helper library vtable purely for historical reasons. The only DRM
 	 * core	entry point to probe connector state is @fill_modes.
 	 *
+	 * Note that the helper library will already hold
+	 * &drm_mode_config.connection_mutex. Drivers which need to grab additional
+	 * locks to avoid races with concurrent modeset changes need to use
+	 * &drm_connector_helper_funcs.detect_ctx instead.
+	 *
 	 * RETURNS:
 	 *
 	 * drm_connector_status indicating the connector's status.
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 2be2192b1373..a8176a836e25 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -322,7 +322,8 @@ struct drm_crtc_funcs {
 	 * hooks.
 	 */
 	int (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
-			 uint32_t size);
+			 uint32_t size,
+			 struct drm_modeset_acquire_ctx *ctx);
 
 	/**
 	 * @destroy:
@@ -782,15 +783,6 @@ struct drm_crtc {
 	 */
 	spinlock_t commit_lock;
 
-	/**
-	 * @acquire_ctx:
-	 *
-	 * Per-CRTC implicit acquire context used by atomic drivers for legacy
-	 * IOCTLs, so that atomic drivers can get at the locking acquire
-	 * context.
-	 */
-	struct drm_modeset_acquire_ctx *acquire_ctx;
-
 #ifdef CONFIG_DEBUG_FS
 	/**
 	 * @debugfs_entry:
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index 43505c7b2b3f..76e237bd989b 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -67,6 +67,9 @@ int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 int drm_helper_probe_single_connector_modes(struct drm_connector
 					    *connector, uint32_t maxX,
 					    uint32_t maxY);
+int drm_helper_probe_detect(struct drm_connector *connector,
+			    struct drm_modeset_acquire_ctx *ctx,
+			    bool force);
 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);
diff --git a/include/drm/drm_ioctl.h b/include/drm/drm_ioctl.h
index f17ee077f649..ee03b3c44b3b 100644
--- a/include/drm/drm_ioctl.h
+++ b/include/drm/drm_ioctl.h
@@ -33,6 +33,7 @@
 #define _DRM_IOCTL_H_
 
 #include <linux/types.h>
+#include <linux/bitops.h>
 
 #include <asm/ioctl.h>
 
@@ -41,41 +42,126 @@ struct drm_file;
 struct file;
 
 /**
- * Ioctl function type.
+ * drm_ioctl_t - DRM ioctl function type.
+ * @dev: DRM device inode
+ * @data: private pointer of the ioctl call
+ * @file_priv: DRM file this ioctl was made on
  *
- * \param inode device inode.
- * \param file_priv DRM file private pointer.
- * \param cmd command.
- * \param arg argument.
+ * This is the DRM ioctl typedef. Note that drm_ioctl() has alrady copied @data
+ * into kernel-space, and will also copy it back, depending upon the read/write
+ * settings in the ioctl command code.
  */
 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
 			struct drm_file *file_priv);
 
+/**
+ * drm_ioctl_compat_t - compatibility DRM ioctl function type.
+ * @filp: file pointer
+ * @cmd: ioctl command code
+ * @arg: DRM file this ioctl was made on
+ *
+ * Just a typedef to make declaring an array of compatibility handlers easier.
+ * New drivers shouldn't screw up the structure layout for their ioctl
+ * structures and hence never need this.
+ */
 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
+/**
+ * enum drm_ioctl_flags - DRM ioctl flags
+ *
+ * Various flags that can be set in &drm_ioctl_desc.flags to control how
+ * userspace can use a given ioctl.
+ */
+enum drm_ioctl_flags {
+	/**
+	 * @DRM_AUTH:
+	 *
+	 * This is for ioctl which are used for rendering, and require that the
+	 * file descriptor is either for a render node, or if it's a
+	 * legacy/primary node, then it must be authenticated.
+	 */
+	DRM_AUTH		= BIT(0),
+	/**
+	 * @DRM_MASTER:
+	 *
+	 * This must be set for any ioctl which can change the modeset or
+	 * display state. Userspace must call the ioctl through a primary node,
+	 * while it is the active master.
+	 *
+	 * Note that read-only modeset ioctl can also be called by
+	 * unauthenticated clients, or when a master is not the currently active
+	 * one.
+	 */
+	DRM_MASTER		= BIT(1),
+	/**
+	 * @DRM_ROOT_ONLY:
+	 *
+	 * Anything that could potentially wreak a master file descriptor needs
+	 * to have this flag set. Current that's only for the SETMASTER and
+	 * DROPMASTER ioctl, which e.g. logind can call to force a non-behaving
+	 * master (display compositor) into compliance.
+	 *
+	 * This is equivalent to callers with the SYSADMIN capability.
+	 */
+	DRM_ROOT_ONLY		= BIT(2),
+	/**
+	 * @DRM_CONTROL_ALLOW:
+	 *
+	 * Deprecated, do not use. Control nodes are in the process of getting
+	 * removed.
+	 */
+	DRM_CONTROL_ALLOW	= BIT(3),
+	/**
+	 * @DRM_UNLOCKED:
+	 *
+	 * Whether &drm_ioctl_desc.func should be called with the DRM BKL held
+	 * or not. Enforced as the default for all modern drivers, hence there
+	 * should never be a need to set this flag.
+	 */
+	DRM_UNLOCKED		= BIT(4),
+	/**
+	 * @DRM_RENDER_ALLOW:
+	 *
+	 * This is used for all ioctl needed for rendering only, for drivers
+	 * which support render nodes. This should be all new render drivers,
+	 * and hence it should be always set for any ioctl with DRM_AUTH set.
+	 * Note though that read-only query ioctl might have this set, but have
+	 * not set DRM_AUTH because they do not require authentication.
+	 */
+	DRM_RENDER_ALLOW	= BIT(5),
+};
 
+/**
+ * struct drm_ioctl_desc - DRM driver ioctl entry
+ * @cmd: ioctl command number, without flags
+ * @flags: a bitmask of &enum drm_ioctl_flags
+ * @func: handler for this ioctl
+ * @name: user-readable name for debug output
+ *
+ * For convenience it's easier to create these using the DRM_IOCTL_DEF_DRV()
+ * macro.
+ */
 struct drm_ioctl_desc {
 	unsigned int cmd;
-	int flags;
+	enum drm_ioctl_flags 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().
+ * DRM_IOCTL_DEF_DRV() - helper macro to fill out a &struct drm_ioctl_desc
+ * @ioctl: ioctl command suffix
+ * @_func: handler for the ioctl
+ * @_flags: a bitmask of &enum drm_ioctl_flags
+ *
+ * Small helper macro to create a &struct drm_ioctl_desc entry. The ioctl
+ * command number is constructed by prepending ``DRM_IOCTL\_`` and passing that
+ * to DRM_IOCTL_NR().
  */
-
 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags)				\
 	[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {	\
 		.cmd = DRM_IOCTL_##ioctl,				\
diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index 091c42205667..c01c328f6cc8 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -747,6 +747,10 @@ struct drm_connector_helper_funcs {
 	 * This callback is used by the probe helpers in e.g.
 	 * drm_helper_probe_single_connector_modes().
 	 *
+	 * To avoid races with concurrent connector state updates, the helper
+	 * libraries always call this with the &drm_mode_config.connection_mutex
+	 * held. Because of this it's safe to inspect &drm_connector->state.
+	 *
 	 * RETURNS:
 	 *
 	 * The number of modes added by calling drm_mode_probed_add().
@@ -754,6 +758,34 @@ struct drm_connector_helper_funcs {
 	int (*get_modes)(struct drm_connector *connector);
 
 	/**
+	 * @detect_ctx:
+	 *
+	 * Check to see if anything is attached to the connector. The parameter
+	 * force is set to false whilst polling, true when checking the
+	 * connector due to a user request. force can be used by the driver to
+	 * avoid expensive, destructive operations during automated probing.
+	 *
+	 * This callback is optional, if not implemented the connector will be
+	 * considered as always being attached.
+	 *
+	 * This is the atomic version of &drm_connector_funcs.detect.
+	 *
+	 * To avoid races against concurrent connector state updates, the
+	 * helper libraries always call this with ctx set to a valid context,
+	 * and &drm_mode_config.connection_mutex will always be locked with
+	 * the ctx parameter set to this ctx. This allows taking additional
+	 * locks as required.
+	 *
+	 * RETURNS:
+	 *
+	 * &drm_connector_status indicating the connector's status,
+	 * or the error code returned by drm_modeset_lock(), -EDEADLK.
+	 */
+	int (*detect_ctx)(struct drm_connector *connector,
+			  struct drm_modeset_acquire_ctx *ctx,
+			  bool force);
+
+	/**
 	 * @mode_valid:
 	 *
 	 * Callback to validate a mode for a connector, irrespective of the
@@ -771,6 +803,10 @@ struct drm_connector_helper_funcs {
 	 * CRTC helpers will not call this function. Drivers therefore must
 	 * still fully validate any mode passed in in a modeset request.
 	 *
+	 * To avoid races with concurrent connector state updates, the helper
+	 * libraries always call this with the &drm_mode_config.connection_mutex
+	 * held. Because of this it's safe to inspect &drm_connector->state.
+         *
 	 * RETURNS:
 	 *
 	 * Either &drm_mode_status.MODE_OK or one of the failure reasons in &enum
@@ -836,6 +872,40 @@ struct drm_connector_helper_funcs {
 	 */
 	struct drm_encoder *(*atomic_best_encoder)(struct drm_connector *connector,
 						   struct drm_connector_state *connector_state);
+
+	/**
+	 * @atomic_check:
+	 *
+	 * This hook is used to validate connector state. This function is
+	 * called from &drm_atomic_helper_check_modeset, and is called when
+	 * a connector property is set, or a modeset on the crtc is forced.
+	 *
+	 * Because &drm_atomic_helper_check_modeset may be called multiple times,
+	 * this function should handle being called multiple times as well.
+	 *
+	 * This function is also allowed to inspect any other object's state and
+	 * can add more state objects to the atomic commit if needed. Care must
+	 * be taken though to ensure that state check and compute functions for
+	 * these added states are all called, and derived state in other objects
+	 * all updated. Again the recommendation is to just call check helpers
+	 * until a maximal configuration is reached.
+	 *
+	 * NOTE:
+	 *
+	 * This function is called in the check phase of an atomic update. The
+	 * driver is not allowed to change anything outside of the free-standing
+	 * state objects passed-in or assembled in the overall &drm_atomic_state
+	 * update tracking structure.
+	 *
+	 * RETURNS:
+	 *
+	 * 0 on success, -EINVAL if the state or the transition can't be
+	 * supported, -ENOMEM on memory allocation failure and -EDEADLK if an
+	 * attempt to obtain another state object ran into a &drm_modeset_lock
+	 * deadlock.
+	 */
+	int (*atomic_check)(struct drm_connector *connector,
+			    struct drm_connector_state *state);
 };
 
 /**
diff --git a/include/drm/drm_modeset_lock.h b/include/drm/drm_modeset_lock.h
index 96d39fbd12ca..4b27c2bb955c 100644
--- a/include/drm/drm_modeset_lock.h
+++ b/include/drm/drm_modeset_lock.h
@@ -121,12 +121,7 @@ struct drm_plane;
 
 void drm_modeset_lock_all(struct drm_device *dev);
 void drm_modeset_unlock_all(struct drm_device *dev);
-void drm_modeset_lock_crtc(struct drm_crtc *crtc,
-			   struct drm_plane *plane);
-void drm_modeset_unlock_crtc(struct drm_crtc *crtc);
 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_ctx(struct drm_device *dev,
 			     struct drm_modeset_acquire_ctx *ctx);
diff --git a/include/drm/drm_of.h b/include/drm/drm_of.h
index d1fc563f068a..104dd517fdbe 100644
--- a/include/drm/drm_of.h
+++ b/include/drm/drm_of.h
@@ -8,6 +8,8 @@ struct component_match;
 struct device;
 struct drm_device;
 struct drm_encoder;
+struct drm_panel;
+struct drm_bridge;
 struct device_node;
 
 #ifdef CONFIG_OF
@@ -23,6 +25,10 @@ int drm_of_component_probe(struct device *dev,
 int drm_of_encoder_active_endpoint(struct device_node *node,
 				   struct drm_encoder *encoder,
 				   struct of_endpoint *endpoint);
+int drm_of_find_panel_or_bridge(const struct device_node *np,
+				int port, int endpoint,
+				struct drm_panel **panel,
+				struct drm_bridge **bridge);
 #else
 static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
 						  struct device_node *port)
@@ -52,6 +58,13 @@ static inline int drm_of_encoder_active_endpoint(struct device_node *node,
 {
 	return -EINVAL;
 }
+static inline int drm_of_find_panel_or_bridge(const struct device_node *np,
+					      int port, int endpoint,
+					      struct drm_panel **panel,
+					      struct drm_bridge **bridge)
+{
+	return -EINVAL;
+}
 #endif
 
 static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index 4b76cf2d5a7b..1b364b0100f4 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -192,7 +192,7 @@ void drm_panel_remove(struct drm_panel *panel);
 int drm_panel_attach(struct drm_panel *panel, struct drm_connector *connector);
 int drm_panel_detach(struct drm_panel *panel);
 
-#ifdef CONFIG_OF
+#if defined(CONFIG_OF) && defined(CONFIG_DRM_PANEL)
 struct drm_panel *of_drm_find_panel(const struct device_node *np);
 #else
 static inline struct drm_panel *of_drm_find_panel(const struct device_node *np)
diff --git a/include/drm/drm_sysfs.h b/include/drm/drm_sysfs.h
index 23418c1f10d1..70c9a1074aca 100644
--- a/include/drm/drm_sysfs.h
+++ b/include/drm/drm_sysfs.h
@@ -1,12 +1,12 @@
 #ifndef _DRM_SYSFS_H_
 #define _DRM_SYSFS_H_
 
-/**
- * This minimalistic include file is intended for users (read TTM) that
- * don't want to include the full drmP.h file.
- */
+struct drm_device;
+struct device;
 
 int drm_class_device_register(struct device *dev);
 void drm_class_device_unregister(struct device *dev);
 
+void drm_sysfs_hotplug_event(struct drm_device *dev);
+
 #endif