Merge tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "As part of building up nova-core/nova-drm pieces we've brought in some
  rust abstractions through this tree, aux bus being the main one, with
  devres changes also in the driver-core tree. Along with the drm core
  abstractions and enough nova-core/nova-drm to use them. This is still
  all stub work under construction, to build the nova driver upstream.

  The other big NVIDIA related one is nouveau adds support for
  Hopper/Blackwell GPUs, this required a new GSP firmware update to
  570.144, and a bunch of rework in order to support multiple fw
  interfaces.

  There is also the introduction of an asahi uapi header file as a
  precursor to getting the real driver in later, but to unblock
  userspace mesa packages while the driver is trapped behind rust
  enablement.

  Otherwise it's the usual mixture of stuff all over, amdgpu, i915/xe,
  and msm being the main ones, and some changes to vsprintf.

  new drivers:
   - bring in the asahi uapi header standalone
   - nova-drm: stub driver

  rust dependencies (for nova-core):
   - auxiliary
       - bus abstractions
       - driver registration
       - sample driver
   - devres changes from driver-core
   - revocable changes

  core:
   - add Apple fourcc modifiers
   - add virtio capset definitions
   - extend EXPORT_SYNC_FILE for timeline syncobjs
   - convert to devm_platform_ioremap_resource
   - refactor shmem helper page pinning
   - DP powerup/down link helpers
   - extended %p4cc in vsprintf.c to support fourcc prints
   - change vsprintf %p4cn to %p4chR, remove %p4cn
   - Add drm_file_err function
   - IN_FORMATS_ASYNC property
   - move sitronix from tiny to their own subdir

  rust:
   - add drm core infrastructure rust abstractions
     (device/driver, ioctl, file, gem)

  dma-buf:
   - adjust sg handling to not cache map on attach
   - allow setting dma-device for import
   - Add a helper to sort and deduplicate dma_fence arrays

  docs:
   - updated drm scheduler docs
   - fbdev todo update
   - fb rendering
   - actual brightness

  ttm:
   - fix delayed destroy resv object

  bridge:
   - add kunit tests
   - convert tc358775 to atomic
   - convert drivers to devm_drm_bridge_alloc
   - convert rk3066_hdmi to bridge driver

  scheduler:
   - add kunit tests

  panel:
   - refcount panels to improve lifetime handling
   - Powertip PH128800T004-ZZA01
   - NLT NL13676BC25-03F, Tianma TM070JDHG34-00
   - Himax HX8279/HX8279-D DDIC
   - Visionox G2647FB105
   - Sitronix ST7571
   - ZOTAC rotation quirk

  vkms:
   - allow attaching more displays

  i915:
   - xe3lpd display updates
   - vrr refactor
   - intel_display struct conversions
   - xe2hpd memory type identification
   - add link rate/count to i915_display_info
   - cleanup VGA plane handling
   - refactor HDCP GSC
   - fix SLPC wait boosting reference counting
   - add 20ms delay to engine reset
   - fix fence release on early probe errors

  xe:
   - SRIOV updates
   - BMG PCI ID update
   - support separate firmware for each GT
   - SVM fix, prelim SVM multi-device work
   - export fan speed
   - temp disable d3cold on BMG
   - backup VRAM in PM notifier instead of suspend/freeze
   - update xe_ttm_access_memory to use GPU for non-visible access
   - fix guc_info debugfs for VFs
   - use copy_from_user instead of __copy_from_user
   - append PCIe gen5 limitations to xe_firmware document

  amdgpu:
   - DSC cleanup
   - DC Scaling updates
   - Fused I2C-over-AUX updates
   - DMUB updates
   - Use drm_file_err in amdgpu
   - Enforce isolation updates
   - Use new dma_fence helpers
   - USERQ fixes
   - Documentation updates
   - SR-IOV updates
   - RAS updates
   - PSP 12 cleanups
   - GC 9.5 updates
   - SMU 13.x updates
   - VCN / JPEG SR-IOV updates

  amdkfd:
   - Update error messages for SDMA
   - Userptr updates
   - XNACK fixes

  radeon:
   - CIK doorbell cleanup

  nouveau:
   - add support for NVIDIA r570 GSP firmware
   - enable Hopper/Blackwell support

  nova-core:
   - fix task list
   - register definition infrastructure
   - move firmware into own rust module
   - register auxiliary device for nova-drm

  nova-drm:
   - initial driver skeleton

  msm:
   - GPU:
       - ACD (adaptive clock distribution) for X1-85
       - drop fictional address_space_size
       - improve GMU HFI response time out robustness
       - fix crash when throttling during boot
   - DPU:
       - use single CTL path for flushing on DPU 5.x+
       - improve SSPP allocation code for better sharing
       - Enabled SmartDMA on SM8150, SC8180X, SC8280XP, SM8550
       - Added SAR2130P support
       - Disabled DSC support on MSM8937, MSM8917, MSM8953, SDM660
   - DP:
       - switch to new audio helpers
       - better LTTPR handling
   - DSI:
       - Added support for SA8775P
       - Added SAR2130P support
   - HDMI:
       - Switched to use new helpers for ACR data
       - Fixed old standing issue of HPD not working in some cases

  amdxdna:
   - add dma-buf support
   - allow empty command submits

  renesas:
   - add dma-buf support
   - add zpos, alpha, blend support

  panthor:
   - fail properly for NO_MMAP bos
   - add SET_LABEL ioctl
   - debugfs BO dumping support

  imagination:
   - update DT bindings
   - support TI AM68 GPU

  hibmc:
   - improve interrupt handling and HPD support

  virtio:
   - add panic handler support

  rockchip:
   - add RK3588 support
   - add DP AUX bus panel support

  ivpu:
   - add heartbeat based hangcheck

  mediatek:
   - prepares support for MT8195/99 HDMIv2/DDCv2

  anx7625:
   - improve HPD

  tegra:
   - speed up firmware loading

* tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel: (1627 commits)
  drm/nouveau/tegra: Fix error pointer vs NULL return in nvkm_device_tegra_resource_addr()
  drm/xe: Default auto_link_downgrade status to false
  drm/xe/guc: Make creation of SLPC debugfs files conditional
  drm/i915/display: Add check for alloc_ordered_workqueue() and alloc_workqueue()
  drm/i915/dp_mst: Work around Thunderbolt sink disconnect after SINK_COUNT_ESI read
  drm/i915/ptl: Use everywhere the correct DDI port clock select mask
  drm/nouveau/kms: add support for GB20x
  drm/dp: add option to disable zero sized address only transactions.
  drm/nouveau: add support for GB20x
  drm/nouveau/gsp: add hal for fifo.chan.doorbell_handle
  drm/nouveau: add support for GB10x
  drm/nouveau/gf100-: track chan progress with non-WFI semaphore release
  drm/nouveau/nv50-: separate CHANNEL_GPFIFO handling out from CHANNEL_DMA
  drm/nouveau: add helper functions for allocating pinned/cpu-mapped bos
  drm/nouveau: add support for GH100
  drm/nouveau: improve handling of 64-bit BARs
  drm/nouveau/gv100-: switch to volta semaphore methods
  drm/nouveau/gsp: support deeper page tables in COPY_SERVER_RESERVED_PDES
  drm/nouveau/gsp: init client VMMs with NV0080_CTRL_DMA_SET_PAGE_DIRECTORY
  drm/nouveau/gsp: fetch level shift and PDE from BAR2 VMM
  ...

24 files changed, 586 insertions, 107 deletions

diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h
index 6002c5666031..cf17646c1310 100644
--- a/include/drm/bridge/analogix_dp.h
+++ b/include/drm/bridge/analogix_dp.h
@@ -10,16 +10,18 @@
 #include <drm/drm_crtc.h>
 
 struct analogix_dp_device;
+struct drm_dp_aux;
 
 enum analogix_dp_devtype {
 	EXYNOS_DP,
 	RK3288_DP,
 	RK3399_EDP,
+	RK3588_EDP,
 };
 
 static inline bool is_rockchip(enum analogix_dp_devtype type)
 {
-	return type == RK3288_DP || type == RK3399_EDP;
+	return type == RK3288_DP || type == RK3399_EDP || type == RK3588_EDP;
 }
 
 struct analogix_dp_plat_data {
@@ -48,4 +50,7 @@ void analogix_dp_unbind(struct analogix_dp_device *dp);
 int analogix_dp_start_crc(struct drm_connector *connector);
 int analogix_dp_stop_crc(struct drm_connector *connector);
 
+struct analogix_dp_plat_data *analogix_dp_aux_to_plat_data(struct drm_dp_aux *aux);
+struct drm_dp_aux *analogix_dp_get_aux(struct analogix_dp_device *dp);
+
 #endif /* _ANALOGIX_DP_H_ */
diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h
index c413ef68f9a3..3001c0b6e7bb 100644
--- a/include/drm/display/drm_dp.h
+++ b/include/drm/display/drm_dp.h
@@ -1025,6 +1025,7 @@
 #define DP_EDP_GENERAL_CAP_2		    0x703
 # define DP_EDP_OVERDRIVE_ENGINE_ENABLED		(1 << 0)
 # define DP_EDP_PANEL_LUMINANCE_CONTROL_CAPABLE		(1 << 4)
+# define DP_EDP_SMOOTH_BRIGHTNESS_CAPABLE		(1 << 6) /* eDP 2.0 */
 
 #define DP_EDP_GENERAL_CAP_3		    0x704    /* eDP 1.4 */
 # define DP_EDP_X_REGION_CAP_MASK			(0xf << 0)
diff --git a/include/drm/display/drm_dp_helper.h b/include/drm/display/drm_dp_helper.h
index 5ae4241959f2..e4ca35143ff9 100644
--- a/include/drm/display/drm_dp_helper.h
+++ b/include/drm/display/drm_dp_helper.h
@@ -518,6 +518,11 @@ struct drm_dp_aux {
 	 * @powered_down: If true then the remote endpoint is powered down.
 	 */
 	bool powered_down;
+
+	/**
+	 * @no_zero_sized: If the hw can't use zero sized transfers (NVIDIA)
+	 */
+	bool no_zero_sized;
 };
 
 int drm_dp_dpcd_probe(struct drm_dp_aux *aux, unsigned int offset);
@@ -528,13 +533,72 @@ ssize_t drm_dp_dpcd_write(struct drm_dp_aux *aux, unsigned int offset,
 			  void *buffer, size_t size);
 
 /**
+ * drm_dp_dpcd_read_data() - read a series of bytes from the DPCD
+ * @aux: DisplayPort AUX channel (SST or MST)
+ * @offset: address of the (first) register to read
+ * @buffer: buffer to store the register values
+ * @size: number of bytes in @buffer
+ *
+ * Returns zero (0) on success, or a negative error
+ * code on failure. -EIO is returned if the request was NAKed by the sink or
+ * if the retry count was exceeded. If not all bytes were transferred, this
+ * function returns -EPROTO. Errors from the underlying AUX channel transfer
+ * function, with the exception of -EBUSY (which causes the transaction to
+ * be retried), are propagated to the caller.
+ */
+static inline int drm_dp_dpcd_read_data(struct drm_dp_aux *aux,
+					unsigned int offset,
+					void *buffer, size_t size)
+{
+	int ret;
+
+	ret = drm_dp_dpcd_read(aux, offset, buffer, size);
+	if (ret < 0)
+		return ret;
+	if (ret < size)
+		return -EPROTO;
+
+	return 0;
+}
+
+/**
+ * drm_dp_dpcd_write_data() - write a series of bytes to the DPCD
+ * @aux: DisplayPort AUX channel (SST or MST)
+ * @offset: address of the (first) register to write
+ * @buffer: buffer containing the values to write
+ * @size: number of bytes in @buffer
+ *
+ * Returns zero (0) on success, or a negative error
+ * code on failure. -EIO is returned if the request was NAKed by the sink or
+ * if the retry count was exceeded. If not all bytes were transferred, this
+ * function returns -EPROTO. Errors from the underlying AUX channel transfer
+ * function, with the exception of -EBUSY (which causes the transaction to
+ * be retried), are propagated to the caller.
+ */
+static inline int drm_dp_dpcd_write_data(struct drm_dp_aux *aux,
+					 unsigned int offset,
+					 void *buffer, size_t size)
+{
+	int ret;
+
+	ret = drm_dp_dpcd_write(aux, offset, buffer, size);
+	if (ret < 0)
+		return ret;
+	if (ret < size)
+		return -EPROTO;
+
+	return 0;
+}
+
+/**
  * drm_dp_dpcd_readb() - read a single byte from the DPCD
  * @aux: DisplayPort AUX channel
  * @offset: address of the register to read
  * @valuep: location where the value of the register will be stored
  *
  * Returns the number of bytes transferred (1) on success, or a negative
- * error code on failure.
+ * error code on failure. In most of the cases you should be using
+ * drm_dp_dpcd_read_byte() instead.
  */
 static inline ssize_t drm_dp_dpcd_readb(struct drm_dp_aux *aux,
 					unsigned int offset, u8 *valuep)
@@ -549,7 +613,8 @@ static inline ssize_t drm_dp_dpcd_readb(struct drm_dp_aux *aux,
  * @value: value to write to the register
  *
  * Returns the number of bytes transferred (1) on success, or a negative
- * error code on failure.
+ * error code on failure. In most of the cases you should be using
+ * drm_dp_dpcd_write_byte() instead.
  */
 static inline ssize_t drm_dp_dpcd_writeb(struct drm_dp_aux *aux,
 					 unsigned int offset, u8 value)
@@ -557,6 +622,34 @@ static inline ssize_t drm_dp_dpcd_writeb(struct drm_dp_aux *aux,
 	return drm_dp_dpcd_write(aux, offset, &value, 1);
 }
 
+/**
+ * drm_dp_dpcd_read_byte() - read a single byte from the DPCD
+ * @aux: DisplayPort AUX channel
+ * @offset: address of the register to read
+ * @valuep: location where the value of the register will be stored
+ *
+ * Returns zero (0) on success, or a negative error code on failure.
+ */
+static inline int drm_dp_dpcd_read_byte(struct drm_dp_aux *aux,
+					unsigned int offset, u8 *valuep)
+{
+	return drm_dp_dpcd_read_data(aux, offset, valuep, 1);
+}
+
+/**
+ * drm_dp_dpcd_write_byte() - write a single byte to the DPCD
+ * @aux: DisplayPort AUX channel
+ * @offset: address of the register to write
+ * @value: value to write to the register
+ *
+ * Returns zero (0) on success, or a negative error code on failure.
+ */
+static inline int drm_dp_dpcd_write_byte(struct drm_dp_aux *aux,
+					 unsigned int offset, u8 value)
+{
+	return drm_dp_dpcd_write_data(aux, offset, &value, 1);
+}
+
 int drm_dp_read_dpcd_caps(struct drm_dp_aux *aux,
 			  u8 dpcd[DP_RECEIVER_CAP_SIZE]);
 
@@ -566,6 +659,8 @@ int drm_dp_dpcd_read_link_status(struct drm_dp_aux *aux,
 int drm_dp_dpcd_read_phy_link_status(struct drm_dp_aux *aux,
 				     enum drm_dp_phy dp_phy,
 				     u8 link_status[DP_LINK_STATUS_SIZE]);
+int drm_dp_link_power_up(struct drm_dp_aux *aux, unsigned char revision);
+int drm_dp_link_power_down(struct drm_dp_aux *aux, unsigned char revision);
 
 int drm_dp_dpcd_write_payload(struct drm_dp_aux *aux,
 			      int vcpid, u8 start_time_slot, u8 time_slot_count);
@@ -881,5 +976,7 @@ int drm_dp_bw_channel_coding_efficiency(bool is_uhbr);
 int drm_dp_max_dprx_data_rate(int max_link_rate, int max_lanes);
 
 ssize_t drm_dp_vsc_sdp_pack(const struct drm_dp_vsc_sdp *vsc, struct dp_sdp *sdp);
+int drm_dp_link_symbol_cycles(int lane_count, int pixels, int dsc_slice_count,
+			      int bpp_x16, int symbol_size, bool is_mst);
 
 #endif /* _DRM_DP_HELPER_H_ */
diff --git a/include/drm/display/drm_hdmi_helper.h b/include/drm/display/drm_hdmi_helper.h
index 57e3b18c15ec..09145c9ee9fc 100644
--- a/include/drm/display/drm_hdmi_helper.h
+++ b/include/drm/display/drm_hdmi_helper.h
@@ -28,4 +28,10 @@ unsigned long long
 drm_hdmi_compute_mode_clock(const struct drm_display_mode *mode,
 			    unsigned int bpc, enum hdmi_colorspace fmt);
 
+void
+drm_hdmi_acr_get_n_cts(unsigned long long tmds_char_rate,
+		       unsigned int sample_rate,
+		       unsigned int *out_n,
+		       unsigned int *out_cts);
+
 #endif
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 4c673f0698fe..38636a593c9d 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -625,6 +625,9 @@ drm_atomic_get_old_connector_for_encoder(const struct drm_atomic_state *state,
 struct drm_connector *
 drm_atomic_get_new_connector_for_encoder(const struct drm_atomic_state *state,
 					 struct drm_encoder *encoder);
+struct drm_connector *
+drm_atomic_get_connector_for_encoder(const struct drm_encoder *encoder,
+				     struct drm_modeset_acquire_ctx *ctx);
 
 struct drm_crtc *
 drm_atomic_get_old_crtc_for_encoder(struct drm_atomic_state *state,
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index d4c75d59fa12..4e418a29a9ff 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -73,7 +73,7 @@ struct drm_bridge_funcs {
 	 *
 	 * Zero on success, error code on failure.
 	 */
-	int (*attach)(struct drm_bridge *bridge,
+	int (*attach)(struct drm_bridge *bridge, struct drm_encoder *encoder,
 		      enum drm_bridge_attach_flags flags);
 
 	/**
@@ -681,8 +681,10 @@ struct drm_bridge_funcs {
 	/**
 	 * @hdmi_audio_startup:
 	 *
-	 * Called when ASoC starts an audio stream setup. The
-	 * @hdmi_audio_startup() is optional.
+	 * Called when ASoC starts an audio stream setup.
+	 *
+	 * This callback is optional, it can be implemented by bridges that
+	 * set the @DRM_BRIDGE_OP_HDMI_AUDIO flag in their &drm_bridge->ops.
 	 *
 	 * Returns:
 	 * 0 on success, a negative error code otherwise
@@ -693,8 +695,10 @@ struct drm_bridge_funcs {
 	/**
 	 * @hdmi_audio_prepare:
 	 * Configures HDMI-encoder for audio stream. Can be called multiple
-	 * times for each setup. Mandatory if HDMI audio is enabled in the
-	 * bridge's configuration.
+	 * times for each setup.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the @DRM_BRIDGE_OP_HDMI_AUDIO flag in their &drm_bridge->ops.
 	 *
 	 * Returns:
 	 * 0 on success, a negative error code otherwise
@@ -707,8 +711,10 @@ struct drm_bridge_funcs {
 	/**
 	 * @hdmi_audio_shutdown:
 	 *
-	 * Shut down the audio stream. Mandatory if HDMI audio is enabled in
-	 * the bridge's configuration.
+	 * Shut down the audio stream.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the @DRM_BRIDGE_OP_HDMI_AUDIO flag in their &drm_bridge->ops.
 	 *
 	 * Returns:
 	 * 0 on success, a negative error code otherwise
@@ -719,8 +725,10 @@ struct drm_bridge_funcs {
 	/**
 	 * @hdmi_audio_mute_stream:
 	 *
-	 * Mute/unmute HDMI audio stream. The @hdmi_audio_mute_stream callback
-	 * is optional.
+	 * Mute/unmute HDMI audio stream.
+	 *
+	 * This callback is optional, it can be implemented by bridges that
+	 * set the @DRM_BRIDGE_OP_HDMI_AUDIO flag in their &drm_bridge->ops.
 	 *
 	 * Returns:
 	 * 0 on success, a negative error code otherwise
@@ -730,6 +738,65 @@ struct drm_bridge_funcs {
 				      bool enable, int direction);
 
 	/**
+	 * @dp_audio_startup:
+	 *
+	 * Called when ASoC starts a DisplayPort audio stream setup.
+	 *
+	 * This callback is optional, it can be implemented by bridges that
+	 * set the @DRM_BRIDGE_OP_DP_AUDIO flag in their &drm_bridge->ops.
+	 *
+	 * Returns:
+	 * 0 on success, a negative error code otherwise
+	 */
+	int (*dp_audio_startup)(struct drm_connector *connector,
+				struct drm_bridge *bridge);
+
+	/**
+	 * @dp_audio_prepare:
+	 * Configures DisplayPort audio stream. Can be called multiple
+	 * times for each setup.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the @DRM_BRIDGE_OP_DP_AUDIO flag in their &drm_bridge->ops.
+	 *
+	 * Returns:
+	 * 0 on success, a negative error code otherwise
+	 */
+	int (*dp_audio_prepare)(struct drm_connector *connector,
+				struct drm_bridge *bridge,
+				struct hdmi_codec_daifmt *fmt,
+				struct hdmi_codec_params *hparms);
+
+	/**
+	 * @dp_audio_shutdown:
+	 *
+	 * Shut down the DisplayPort audio stream.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the @DRM_BRIDGE_OP_DP_AUDIO flag in their &drm_bridge->ops.
+	 *
+	 * Returns:
+	 * 0 on success, a negative error code otherwise
+	 */
+	void (*dp_audio_shutdown)(struct drm_connector *connector,
+				  struct drm_bridge *bridge);
+
+	/**
+	 * @dp_audio_mute_stream:
+	 *
+	 * Mute/unmute DisplayPort audio stream.
+	 *
+	 * This callback is optional, it can be implemented by bridges that
+	 * set the @DRM_BRIDGE_OP_DP_AUDIO flag in their &drm_bridge->ops.
+	 *
+	 * Returns:
+	 * 0 on success, a negative error code otherwise
+	 */
+	int (*dp_audio_mute_stream)(struct drm_connector *connector,
+				    struct drm_bridge *bridge,
+				    bool enable, int direction);
+
+	/**
 	 * @debugfs_init:
 	 *
 	 * Allows bridges to create bridge-specific debugfs files.
@@ -814,6 +881,32 @@ enum drm_bridge_ops {
 	 * drivers.
 	 */
 	DRM_BRIDGE_OP_HDMI = BIT(4),
+	/**
+	 * @DRM_BRIDGE_OP_HDMI_AUDIO: The bridge provides HDMI audio operations.
+	 * Bridges that set this flag must implement the
+	 * &drm_bridge_funcs->hdmi_audio_prepare and
+	 * &drm_bridge_funcs->hdmi_audio_shutdown callbacks.
+	 *
+	 * Note: currently there can be at most one bridge in a chain that sets
+	 * this bit. This is to simplify corresponding glue code in connector
+	 * drivers. Also it is not possible to have a bridge in the chain that
+	 * sets @DRM_BRIDGE_OP_DP_AUDIO if there is a bridge that sets this
+	 * flag.
+	 */
+	DRM_BRIDGE_OP_HDMI_AUDIO = BIT(5),
+	/**
+	 * @DRM_BRIDGE_OP_DP_AUDIO: The bridge provides DisplayPort audio operations.
+	 * Bridges that set this flag must implement the
+	 * &drm_bridge_funcs->dp_audio_prepare and
+	 * &drm_bridge_funcs->dp_audio_shutdown callbacks.
+	 *
+	 * Note: currently there can be at most one bridge in a chain that sets
+	 * this bit. This is to simplify corresponding glue code in connector
+	 * drivers. Also it is not possible to have a bridge in the chain that
+	 * sets @DRM_BRIDGE_OP_HDMI_AUDIO if there is a bridge that sets this
+	 * flag.
+	 */
+	DRM_BRIDGE_OP_DP_AUDIO = BIT(6),
 };
 
 /**
@@ -840,6 +933,18 @@ struct drm_bridge {
 	const struct drm_bridge_timings *timings;
 	/** @funcs: control functions */
 	const struct drm_bridge_funcs *funcs;
+
+	/**
+	 * @container: Pointer to the private driver struct embedding this
+	 * @struct drm_bridge.
+	 */
+	void *container;
+
+	/**
+	 * @refcount: reference count of users referencing this bridge.
+	 */
+	struct kref refcount;
+
 	/** @driver_private: pointer to the bridge driver's internal context */
 	void *driver_private;
 	/** @ops: bitmask of operations supported by the bridge */
@@ -914,23 +1019,28 @@ struct drm_bridge {
 	unsigned int max_bpc;
 
 	/**
-	 * @hdmi_audio_dev: device to be used as a parent for the HDMI Codec
+	 * @hdmi_audio_dev: device to be used as a parent for the HDMI Codec if
+	 * either of @DRM_BRIDGE_OP_HDMI_AUDIO or @DRM_BRIDGE_OP_DP_AUDIO is set.
 	 */
 	struct device *hdmi_audio_dev;
 
 	/**
 	 * @hdmi_audio_max_i2s_playback_channels: maximum number of playback
-	 * I2S channels for the HDMI codec
+	 * I2S channels for the @DRM_BRIDGE_OP_HDMI_AUDIO or
+	 * @DRM_BRIDGE_OP_DP_AUDIO.
 	 */
 	int hdmi_audio_max_i2s_playback_channels;
 
 	/**
-	 * @hdmi_audio_spdif_playback: set if HDMI codec has S/PDIF playback port
+	 * @hdmi_audio_spdif_playback: set if this bridge has S/PDIF playback
+	 * port for @DRM_BRIDGE_OP_HDMI_AUDIO or @DRM_BRIDGE_OP_DP_AUDIO.
 	 */
 	unsigned int hdmi_audio_spdif_playback : 1;
 
 	/**
-	 * @hdmi_audio_dai_port: sound DAI port, -1 if it is not enabled
+	 * @hdmi_audio_dai_port: sound DAI port for either of
+	 * @DRM_BRIDGE_OP_HDMI_AUDIO and @DRM_BRIDGE_OP_DP_AUDIO, -1 if it is
+	 * not used.
 	 */
 	int hdmi_audio_dai_port;
 };
@@ -941,6 +1051,30 @@ drm_priv_to_bridge(struct drm_private_obj *priv)
 	return container_of(priv, struct drm_bridge, base);
 }
 
+struct drm_bridge *drm_bridge_get(struct drm_bridge *bridge);
+void drm_bridge_put(struct drm_bridge *bridge);
+
+void *__devm_drm_bridge_alloc(struct device *dev, size_t size, size_t offset,
+			      const struct drm_bridge_funcs *funcs);
+
+/**
+ * devm_drm_bridge_alloc - Allocate and initialize a bridge
+ * @dev: struct device of the bridge device
+ * @type: the type of the struct which contains struct &drm_bridge
+ * @member: the name of the &drm_bridge within @type
+ * @funcs: callbacks for this bridge
+ *
+ * The reference count of the returned bridge is initialized to 1. This
+ * reference will be automatically dropped via devm (by calling
+ * drm_bridge_put()) when @dev is removed.
+ *
+ * Returns:
+ * Pointer to new bridge, or ERR_PTR on failure.
+ */
+#define devm_drm_bridge_alloc(dev, type, member, funcs) \
+	((type *)__devm_drm_bridge_alloc(dev, sizeof(type), \
+					 offsetof(type, member), funcs))
+
 void drm_bridge_add(struct drm_bridge *bridge);
 int devm_drm_bridge_add(struct device *dev, struct drm_bridge *bridge);
 void drm_bridge_remove(struct drm_bridge *bridge);
@@ -958,6 +1092,38 @@ static inline struct drm_bridge *of_drm_find_bridge(struct device_node *np)
 #endif
 
 /**
+ * drm_bridge_get_current_state() - Get the current bridge state
+ * @bridge: bridge object
+ *
+ * This function must be called with the modeset lock held.
+ *
+ * RETURNS:
+ *
+ * The current bridge state, or NULL if there is none.
+ */
+static inline struct drm_bridge_state *
+drm_bridge_get_current_state(struct drm_bridge *bridge)
+{
+	if (!bridge)
+		return NULL;
+
+	/*
+	 * Only atomic bridges will have bridge->base initialized by
+	 * drm_atomic_private_obj_init(), so we need to make sure we're
+	 * working with one before we try to use the lock.
+	 */
+	if (!bridge->funcs || !bridge->funcs->atomic_reset)
+		return NULL;
+
+	drm_modeset_lock_assert_held(&bridge->base.lock);
+
+	if (!bridge->base.state)
+		return NULL;
+
+	return drm_priv_to_bridge_state(bridge->base.state);
+}
+
+/**
  * drm_bridge_get_next_bridge() - Get the next bridge in the chain
  * @bridge: bridge object
  *
@@ -1108,4 +1274,7 @@ static inline struct drm_bridge *drmm_of_get_bridge(struct drm_device *drm,
 }
 #endif
 
+void drm_bridge_debugfs_params(struct dentry *root);
+void drm_bridge_debugfs_encoder_params(struct dentry *root, struct drm_encoder *encoder);
+
 #endif
diff --git a/include/drm/drm_bridge_helper.h b/include/drm/drm_bridge_helper.h
new file mode 100644
index 000000000000..6c35b479ec2a
--- /dev/null
+++ b/include/drm/drm_bridge_helper.h
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#ifndef __DRM_BRIDGE_HELPER_H_
+#define __DRM_BRIDGE_HELPER_H_
+
+struct drm_bridge;
+struct drm_modeset_acquire_ctx;
+
+int drm_bridge_helper_reset_crtc(struct drm_bridge *bridge,
+				 struct drm_modeset_acquire_ctx *ctx);
+
+#endif // __DRM_BRIDGE_HELPER_H_
diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h
index 6ea54a578cda..e2f894f1b90a 100644
--- a/include/drm/drm_device.h
+++ b/include/drm/drm_device.h
@@ -65,6 +65,28 @@ struct drm_device {
 	struct device *dev;
 
 	/**
+	 * @dma_dev:
+	 *
+	 * Device for DMA operations. Only required if the device @dev
+	 * cannot perform DMA by itself. Should be NULL otherwise. Call
+	 * drm_dev_dma_dev() to get the DMA device instead of using this
+	 * field directly. Call drm_dev_set_dma_dev() to set this field.
+	 *
+	 * DRM devices are sometimes bound to virtual devices that cannot
+	 * perform DMA by themselves. Drivers should set this field to the
+	 * respective DMA controller.
+	 *
+	 * Devices on USB and other peripheral busses also cannot perform
+	 * DMA by themselves. The @dma_dev field should point the bus
+	 * controller that does DMA on behalve of such a device. Required
+	 * for importing buffers via dma-buf.
+	 *
+	 * If set, the DRM core automatically releases the reference on the
+	 * device.
+	 */
+	struct device *dma_dev;
+
+	/**
 	 * @managed:
 	 *
 	 * Managed resources linked to the lifetime of this &drm_device as
@@ -327,4 +349,23 @@ struct drm_device {
 	struct dentry *debugfs_root;
 };
 
+void drm_dev_set_dma_dev(struct drm_device *dev, struct device *dma_dev);
+
+/**
+ * drm_dev_dma_dev - returns the DMA device for a DRM device
+ * @dev: DRM device
+ *
+ * Returns the DMA device of the given DRM device. By default, this
+ * the DRM device's parent. See drm_dev_set_dma_dev().
+ *
+ * Returns:
+ * A DMA-capable device for the DRM device.
+ */
+static inline struct device *drm_dev_dma_dev(struct drm_device *dev)
+{
+	if (dev->dma_dev)
+		return dev->dma_dev;
+	return dev->dev;
+}
+
 #endif
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
index a43d707b5f36..63b51942d606 100644
--- a/include/drm/drm_drv.h
+++ b/include/drm/drm_drv.h
@@ -473,6 +473,11 @@ drmm_cgroup_register_region(struct drm_device *dev,
 
 struct drm_device *drm_dev_alloc(const struct drm_driver *driver,
 				 struct device *parent);
+
+void *__drm_dev_alloc(struct device *parent,
+		      const struct drm_driver *driver,
+		      size_t size, size_t offset);
+
 int drm_dev_register(struct drm_device *dev, unsigned long flags);
 void drm_dev_unregister(struct drm_device *dev);
 
diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
index eaac5e665892..b38409670868 100644
--- a/include/drm/drm_edid.h
+++ b/include/drm/drm_edid.h
@@ -437,7 +437,7 @@ bool drm_detect_monitor_audio(const struct edid *edid);
 enum hdmi_quantization_range
 drm_default_rgb_quant_range(const struct drm_display_mode *mode);
 int drm_add_modes_noedid(struct drm_connector *connector,
-			 int hdisplay, int vdisplay);
+			 unsigned int hdisplay, unsigned int vdisplay);
 
 int drm_edid_header_is_valid(const void *edid);
 bool drm_edid_is_valid(struct edid *edid);
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index 94d365b22505..5c3b2aa3e69d 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -446,6 +446,9 @@ static inline bool drm_is_accel_client(const struct drm_file *file_priv)
 	return file_priv->minor->type == DRM_MINOR_ACCEL;
 }
 
+__printf(2, 3)
+void drm_file_err(struct drm_file *file_priv, const char *fmt, ...);
+
 void drm_file_update_pid(struct drm_file *);
 
 struct drm_minor *drm_minor_acquire(struct xarray *minors_xa, unsigned int minor_id);
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index bcd54020d6ba..a3133a08267c 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -159,7 +159,8 @@ struct drm_gem_object_funcs {
 	 * @vmap:
 	 *
 	 * Returns a virtual address for the buffer. Used by the
-	 * drm_gem_dmabuf_vmap() helper.
+	 * drm_gem_dmabuf_vmap() helper. Called with a held GEM reservation
+	 * lock.
 	 *
 	 * This callback is optional.
 	 */
@@ -169,7 +170,8 @@ struct drm_gem_object_funcs {
 	 * @vunmap:
 	 *
 	 * Releases the address previously returned by @vmap. Used by the
-	 * drm_gem_dmabuf_vunmap() helper.
+	 * drm_gem_dmabuf_vunmap() helper. Called with a held GEM reservation
+	 * lock.
 	 *
 	 * This callback is optional.
 	 */
@@ -192,7 +194,8 @@ struct drm_gem_object_funcs {
 	 * @evict:
 	 *
 	 * Evicts gem object out from memory. Used by the drm_gem_object_evict()
-	 * helper. Returns 0 on success, -errno otherwise.
+	 * helper. Returns 0 on success, -errno otherwise. Called with a held
+	 * GEM reservation lock.
 	 *
 	 * This callback is optional.
 	 */
@@ -537,8 +540,8 @@ void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
 void drm_gem_lock(struct drm_gem_object *obj);
 void drm_gem_unlock(struct drm_gem_object *obj);
 
-int drm_gem_vmap_unlocked(struct drm_gem_object *obj, struct iosys_map *map);
-void drm_gem_vunmap_unlocked(struct drm_gem_object *obj, struct iosys_map *map);
+int drm_gem_vmap(struct drm_gem_object *obj, struct iosys_map *map);
+void drm_gem_vunmap(struct drm_gem_object *obj, struct iosys_map *map);
 
 int drm_gem_objects_lookup(struct drm_file *filp, void __user *bo_handles,
 			   int count, struct drm_gem_object ***objs_out);
@@ -561,7 +564,7 @@ unsigned long drm_gem_lru_scan(struct drm_gem_lru *lru,
 			       unsigned long *remaining,
 			       bool (*shrink)(struct drm_gem_object *obj));
 
-int drm_gem_evict(struct drm_gem_object *obj);
+int drm_gem_evict_locked(struct drm_gem_object *obj);
 
 /**
  * drm_gem_object_is_shared_for_memory_stats - helper for shared memory stats
diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h
index cef5a6b5a4d6..b4f993da3cae 100644
--- a/include/drm/drm_gem_shmem_helper.h
+++ b/include/drm/drm_gem_shmem_helper.h
@@ -37,7 +37,18 @@ struct drm_gem_shmem_object {
 	 * Reference count on the pages table.
 	 * The pages are put when the count reaches zero.
 	 */
-	unsigned int pages_use_count;
+	refcount_t pages_use_count;
+
+	/**
+	 * @pages_pin_count:
+	 *
+	 * Reference count on the pinned pages table.
+	 *
+	 * Pages are hard-pinned and reside in memory if count
+	 * greater than zero. Otherwise, when count is zero, the pages are
+	 * allowed to be evicted and purged by memory shrinker.
+	 */
+	refcount_t pages_pin_count;
 
 	/**
 	 * @madv: State for madvise
@@ -71,7 +82,7 @@ struct drm_gem_shmem_object {
 	 * Reference count on the virtual address.
 	 * The address are un-mapped when the count reaches zero.
 	 */
-	unsigned int vmap_use_count;
+	refcount_t vmap_use_count;
 
 	/**
 	 * @pages_mark_dirty_on_put:
@@ -102,28 +113,28 @@ struct drm_gem_shmem_object *drm_gem_shmem_create_with_mnt(struct drm_device *de
 							   struct vfsmount *gemfs);
 void drm_gem_shmem_free(struct drm_gem_shmem_object *shmem);
 
-void drm_gem_shmem_put_pages(struct drm_gem_shmem_object *shmem);
+void drm_gem_shmem_put_pages_locked(struct drm_gem_shmem_object *shmem);
 int drm_gem_shmem_pin(struct drm_gem_shmem_object *shmem);
 void drm_gem_shmem_unpin(struct drm_gem_shmem_object *shmem);
-int drm_gem_shmem_vmap(struct drm_gem_shmem_object *shmem,
-		       struct iosys_map *map);
-void drm_gem_shmem_vunmap(struct drm_gem_shmem_object *shmem,
-			  struct iosys_map *map);
+int drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem,
+			      struct iosys_map *map);
+void drm_gem_shmem_vunmap_locked(struct drm_gem_shmem_object *shmem,
+				 struct iosys_map *map);
 int drm_gem_shmem_mmap(struct drm_gem_shmem_object *shmem, struct vm_area_struct *vma);
 
 int drm_gem_shmem_pin_locked(struct drm_gem_shmem_object *shmem);
 void drm_gem_shmem_unpin_locked(struct drm_gem_shmem_object *shmem);
 
-int drm_gem_shmem_madvise(struct drm_gem_shmem_object *shmem, int madv);
+int drm_gem_shmem_madvise_locked(struct drm_gem_shmem_object *shmem, int madv);
 
 static inline bool drm_gem_shmem_is_purgeable(struct drm_gem_shmem_object *shmem)
 {
 	return (shmem->madv > 0) &&
-		!shmem->vmap_use_count && shmem->sgt &&
+		!refcount_read(&shmem->pages_pin_count) && shmem->sgt &&
 		!shmem->base.dma_buf && !drm_gem_is_imported(&shmem->base);
 }
 
-void drm_gem_shmem_purge(struct drm_gem_shmem_object *shmem);
+void drm_gem_shmem_purge_locked(struct drm_gem_shmem_object *shmem);
 
 struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_shmem_object *shmem);
 struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_shmem_object *shmem);
@@ -214,12 +225,12 @@ static inline struct sg_table *drm_gem_shmem_object_get_sg_table(struct drm_gem_
 }
 
 /*
- * drm_gem_shmem_object_vmap - GEM object function for drm_gem_shmem_vmap()
+ * drm_gem_shmem_object_vmap - GEM object function for drm_gem_shmem_vmap_locked()
  * @obj: GEM object
  * @map: Returns the kernel virtual address of the SHMEM GEM object's backing store.
  *
- * This function wraps drm_gem_shmem_vmap(). Drivers that employ the shmem helpers should
- * use it as their &drm_gem_object_funcs.vmap handler.
+ * This function wraps drm_gem_shmem_vmap_locked(). Drivers that employ the shmem
+ * helpers should use it as their &drm_gem_object_funcs.vmap handler.
  *
  * Returns:
  * 0 on success or a negative error code on failure.
@@ -229,7 +240,7 @@ static inline int drm_gem_shmem_object_vmap(struct drm_gem_object *obj,
 {
 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);
 
-	return drm_gem_shmem_vmap(shmem, map);
+	return drm_gem_shmem_vmap_locked(shmem, map);
 }
 
 /*
@@ -237,15 +248,15 @@ static inline int drm_gem_shmem_object_vmap(struct drm_gem_object *obj,
  * @obj: GEM object
  * @map: Kernel virtual address where the SHMEM GEM object was mapped
  *
- * This function wraps drm_gem_shmem_vunmap(). Drivers that employ the shmem helpers should
- * use it as their &drm_gem_object_funcs.vunmap handler.
+ * This function wraps drm_gem_shmem_vunmap_locked(). Drivers that employ the shmem
+ * helpers should use it as their &drm_gem_object_funcs.vunmap handler.
  */
 static inline void drm_gem_shmem_object_vunmap(struct drm_gem_object *obj,
 					       struct iosys_map *map)
 {
 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);
 
-	drm_gem_shmem_vunmap(shmem, map);
+	drm_gem_shmem_vunmap_locked(shmem, map);
 }
 
 /**
diff --git a/include/drm/drm_kunit_helpers.h b/include/drm/drm_kunit_helpers.h
index 1c62d1d4458c..4948379237e9 100644
--- a/include/drm/drm_kunit_helpers.h
+++ b/include/drm/drm_kunit_helpers.h
@@ -9,6 +9,7 @@
 
 #include <kunit/test.h>
 
+struct drm_connector;
 struct drm_crtc_funcs;
 struct drm_crtc_helper_funcs;
 struct drm_device;
@@ -118,6 +119,13 @@ drm_kunit_helper_create_crtc(struct kunit *test,
 			     const struct drm_crtc_funcs *funcs,
 			     const struct drm_crtc_helper_funcs *helper_funcs);
 
+int drm_kunit_helper_enable_crtc_connector(struct kunit *test,
+					   struct drm_device *drm,
+					   struct drm_crtc *crtc,
+					   struct drm_connector *connector,
+					   const struct drm_display_mode *mode,
+					   struct drm_modeset_acquire_ctx *ctx);
+
 int drm_kunit_add_mode_destroy_action(struct kunit *test,
 				      struct drm_display_mode *mode);
 
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index bd40a443385c..b37860f4a895 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -293,6 +293,7 @@ void mipi_dsi_generic_write_multi(struct mipi_dsi_multi_context *ctx,
 				  const void *payload, size_t size);
 ssize_t mipi_dsi_generic_read(struct mipi_dsi_device *dsi, const void *params,
 			      size_t num_params, void *data, size_t size);
+u32 drm_mipi_dsi_get_input_bus_fmt(enum mipi_dsi_pixel_format dsi_format);
 
 #define mipi_dsi_msleep(ctx, delay)	\
 	do {				\
@@ -417,28 +418,6 @@ void mipi_dsi_dcs_set_tear_off_multi(struct mipi_dsi_multi_context *ctx);
 	} while (0)
 
 /**
- * mipi_dsi_dcs_write_seq - transmit a DCS command with payload
- *
- * This macro will print errors for you and will RETURN FROM THE CALLING
- * FUNCTION (yes this is non-intuitive) upon error.
- *
- * Because of the non-intuitive return behavior, THIS MACRO IS DEPRECATED.
- * Please replace calls of it with mipi_dsi_dcs_write_seq_multi().
- *
- * @dsi: DSI peripheral device
- * @cmd: Command
- * @seq: buffer containing data to be transmitted
- */
-#define mipi_dsi_dcs_write_seq(dsi, cmd, seq...)                               \
-	do {                                                                   \
-		static const u8 d[] = { cmd, seq };                            \
-		int ret;                                                       \
-		ret = mipi_dsi_dcs_write_buffer_chatty(dsi, d, ARRAY_SIZE(d)); \
-		if (ret < 0)                                                   \
-			return ret;                                            \
-	} while (0)
-
-/**
  * mipi_dsi_dcs_write_seq_multi - transmit a DCS command with payload
  *
  * This macro will print errors for you and error handling is optimized for
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index 271765e2e9f2..9e524b51a001 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -532,8 +532,8 @@ struct drm_mode_config {
 	 */
 	struct list_head privobj_list;
 
-	int min_width, min_height;
-	int max_width, max_height;
+	unsigned int min_width, min_height;
+	unsigned int max_width, max_height;
 	const struct drm_mode_config_funcs *funcs;
 
 	/* output poll support */
@@ -937,6 +937,12 @@ struct drm_mode_config {
 	struct drm_property *modifiers_property;
 
 	/**
+	 * @async_modifiers_property: Plane property to list support modifier/format
+	 * combination for asynchronous flips.
+	 */
+	struct drm_property *async_modifiers_property;
+
+	/**
 	 * @size_hints_property: Plane SIZE_HINTS property.
 	 */
 	struct drm_property *size_hints_property;
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index a9c042c8dea1..843fb756a295 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -28,6 +28,7 @@
 #include <linux/errno.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
+#include <linux/kref.h>
 
 struct backlight_device;
 struct dentry;
@@ -266,20 +267,60 @@ struct drm_panel {
 	 * If true then the panel has been enabled.
 	 */
 	bool enabled;
+
+	/**
+	 * @container: Pointer to the private driver struct embedding this
+	 * @struct drm_panel.
+	 */
+	void *container;
+
+	/**
+	 * @refcount: reference count of users referencing this panel.
+	 */
+	struct kref refcount;
 };
 
+void *__devm_drm_panel_alloc(struct device *dev, size_t size, size_t offset,
+			     const struct drm_panel_funcs *funcs,
+			     int connector_type);
+
+/**
+ * devm_drm_panel_alloc - Allocate and initialize a refcounted panel.
+ *
+ * @dev: struct device of the panel device
+ * @type: the type of the struct which contains struct &drm_panel
+ * @member: the name of the &drm_panel within @type
+ * @funcs: callbacks for this panel
+ * @connector_type: the connector type (DRM_MODE_CONNECTOR_*) corresponding to
+ * the panel interface
+ *
+ * The reference count of the returned panel is initialized to 1. This
+ * reference will be automatically dropped via devm (by calling
+ * drm_panel_put()) when @dev is removed.
+ *
+ * Returns:
+ * Pointer to container structure embedding the panel, ERR_PTR on failure.
+ */
+#define devm_drm_panel_alloc(dev, type, member, funcs, connector_type) \
+	((type *)__devm_drm_panel_alloc(dev, sizeof(type), \
+					offsetof(type, member), funcs, \
+					connector_type))
+
 void drm_panel_init(struct drm_panel *panel, struct device *dev,
 		    const struct drm_panel_funcs *funcs,
 		    int connector_type);
 
+struct drm_panel *drm_panel_get(struct drm_panel *panel);
+void drm_panel_put(struct drm_panel *panel);
+
 void drm_panel_add(struct drm_panel *panel);
 void drm_panel_remove(struct drm_panel *panel);
 
-int drm_panel_prepare(struct drm_panel *panel);
-int drm_panel_unprepare(struct drm_panel *panel);
+void drm_panel_prepare(struct drm_panel *panel);
+void drm_panel_unprepare(struct drm_panel *panel);
 
-int drm_panel_enable(struct drm_panel *panel);
-int drm_panel_disable(struct drm_panel *panel);
+void drm_panel_enable(struct drm_panel *panel);
+void drm_panel_disable(struct drm_panel *panel);
 
 int drm_panel_get_modes(struct drm_panel *panel, struct drm_connector *connector);
 
diff --git a/include/drm/drm_panic.h b/include/drm/drm_panic.h
index ff78d00c3da5..310c88c4d336 100644
--- a/include/drm/drm_panic.h
+++ b/include/drm/drm_panic.h
@@ -40,6 +40,16 @@ struct drm_scanout_buffer {
 	struct iosys_map map[DRM_FORMAT_MAX_PLANES];
 
 	/**
+	 * @pages: Optional, if the scanout buffer is not mapped, set this field
+	 * to the array of pages of the scanout buffer. The panic code will use
+	 * kmap_local_page_try_from_panic() to map one page at a time to write
+	 * all the pixels. This array shouldn't be allocated from the
+	 * get_scanoutbuffer() callback.
+	 * The scanout buffer should be in linear format.
+	 */
+	struct page **pages;
+
+	/**
 	 * @width: Width of the scanout buffer, in pixels.
 	 */
 	unsigned int width;
@@ -57,7 +67,7 @@ struct drm_scanout_buffer {
 	/**
 	 * @set_pixel: Optional function, to set a pixel color on the
 	 * framebuffer. It allows to handle special tiling format inside the
-	 * driver.
+	 * driver. It takes precedence over the @map and @pages fields.
 	 */
 	void (*set_pixel)(struct drm_scanout_buffer *sb, unsigned int x,
 			  unsigned int y, u32 color);
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index dd718c62ac31..01479dd94e76 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -549,6 +549,23 @@ struct drm_plane_funcs {
 	 */
 	bool (*format_mod_supported)(struct drm_plane *plane, uint32_t format,
 				     uint64_t modifier);
+	/**
+	 * @format_mod_supported_async:
+	 *
+	 * This optional hook is used for the DRM to determine if for
+	 * asynchronous flip the given format/modifier combination is valid for
+	 * the plane. This allows the DRM to generate the correct format
+	 * bitmask (which formats apply to which modifier), and to validate
+	 * modifiers at atomic_check time.
+	 *
+	 * Returns:
+	 *
+	 * True if the given modifier is valid for that format on the plane.
+	 * False otherwise.
+	 */
+	bool (*format_mod_supported_async)(struct drm_plane *plane,
+					   u32 format, u64 modifier);
+
 };
 
 /**
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index f31eba1c7cab..ab017b05e175 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -345,6 +345,26 @@ drm_coredump_printer(struct drm_print_iterator *iter)
 }
 
 /**
+ * drm_coredump_printer_is_full() - DRM coredump printer output is full
+ * @p: DRM coredump printer
+ *
+ * DRM printer output is full, useful to short circuit coredump printing once
+ * printer is full.
+ *
+ * RETURNS:
+ * True if DRM coredump printer output buffer is full, False otherwise
+ */
+static inline bool drm_coredump_printer_is_full(struct drm_printer *p)
+{
+	struct drm_print_iterator *iterator = p->arg;
+
+	if (p->printfn != __drm_printfn_coredump)
+		return true;
+
+	return !iterator->remain;
+}
+
+/**
  * drm_seq_file_printer - construct a &drm_printer that outputs to &seq_file
  * @f:  the &struct seq_file to output to
  *
diff --git a/include/drm/drm_probe_helper.h b/include/drm/drm_probe_helper.h
index d6ce7b218b77..840ae5f798c2 100644
--- a/include/drm/drm_probe_helper.h
+++ b/include/drm/drm_probe_helper.h
@@ -17,7 +17,7 @@ int drm_helper_probe_detect(struct drm_connector *connector,
 			    struct drm_modeset_acquire_ctx *ctx,
 			    bool force);
 
-int drmm_kms_helper_poll_init(struct drm_device *dev);
+void drmm_kms_helper_poll_init(struct drm_device *dev);
 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/gpu_scheduler.h b/include/drm/gpu_scheduler.h
index 50928a7ae98e..1a7e377d4cbb 100644
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -383,8 +383,15 @@ struct drm_sched_job {
 	struct xarray			dependencies;
 };
 
+/**
+ * enum drm_gpu_sched_stat - the scheduler's status
+ *
+ * @DRM_GPU_SCHED_STAT_NONE: Reserved. Do not use.
+ * @DRM_GPU_SCHED_STAT_NOMINAL: Operation succeeded.
+ * @DRM_GPU_SCHED_STAT_ENODEV: Error: Device is not available anymore.
+ */
 enum drm_gpu_sched_stat {
-	DRM_GPU_SCHED_STAT_NONE, /* Reserve 0 */
+	DRM_GPU_SCHED_STAT_NONE,
 	DRM_GPU_SCHED_STAT_NOMINAL,
 	DRM_GPU_SCHED_STAT_ENODEV,
 };
@@ -410,10 +417,36 @@ struct drm_sched_backend_ops {
 					 struct drm_sched_entity *s_entity);
 
 	/**
-         * @run_job: Called to execute the job once all of the dependencies
-         * have been resolved.  This may be called multiple times, if
-	 * timedout_job() has happened and drm_sched_job_recovery()
-	 * decides to try it again.
+	 * @run_job: Called to execute the job once all of the dependencies
+	 * have been resolved.
+	 *
+	 * @sched_job: the job to run
+	 *
+	 * The deprecated drm_sched_resubmit_jobs() (called by &struct
+	 * drm_sched_backend_ops.timedout_job) can invoke this again with the
+	 * same parameters. Using this is discouraged because it violates
+	 * dma_fence rules, notably dma_fence_init() has to be called on
+	 * already initialized fences for a second time. Moreover, this is
+	 * dangerous because attempts to allocate memory might deadlock with
+	 * memory management code waiting for the reset to complete.
+	 *
+	 * TODO: Document what drivers should do / use instead.
+	 *
+	 * This method is called in a workqueue context - either from the
+	 * submit_wq the driver passed through drm_sched_init(), or, if the
+	 * driver passed NULL, a separate, ordered workqueue the scheduler
+	 * allocated.
+	 *
+	 * Note that the scheduler expects to 'inherit' its own reference to
+	 * this fence from the callback. It does not invoke an extra
+	 * dma_fence_get() on it. Consequently, this callback must take a
+	 * reference for the scheduler, and additional ones for the driver's
+	 * respective needs.
+	 *
+	 * Return:
+	 * * On success: dma_fence the driver must signal once the hardware has
+	 * completed the job ("hardware fence").
+	 * * On failure: NULL or an ERR_PTR.
 	 */
 	struct dma_fence *(*run_job)(struct drm_sched_job *sched_job);
 
@@ -421,43 +454,52 @@ struct drm_sched_backend_ops {
 	 * @timedout_job: Called when a job has taken too long to execute,
 	 * to trigger GPU recovery.
 	 *
-	 * This method is called in a workqueue context.
+	 * @sched_job: The job that has timed out
+	 *
+	 * Drivers typically issue a reset to recover from GPU hangs.
+	 * This procedure looks very different depending on whether a firmware
+	 * or a hardware scheduler is being used.
+	 *
+	 * For a FIRMWARE SCHEDULER, each ring has one scheduler, and each
+	 * scheduler has one entity. Hence, the steps taken typically look as
+	 * follows:
 	 *
-	 * Drivers typically issue a reset to recover from GPU hangs, and this
-	 * procedure usually follows the following workflow:
+	 * 1. Stop the scheduler using drm_sched_stop(). This will pause the
+	 *    scheduler workqueues and cancel the timeout work, guaranteeing
+	 *    that nothing is queued while the ring is being removed.
+	 * 2. Remove the ring. The firmware will make sure that the
+	 *    corresponding parts of the hardware are resetted, and that other
+	 *    rings are not impacted.
+	 * 3. Kill the entity and the associated scheduler.
 	 *
-	 * 1. Stop the scheduler using drm_sched_stop(). This will park the
-	 *    scheduler thread and cancel the timeout work, guaranteeing that
-	 *    nothing is queued while we reset the hardware queue
-	 * 2. Try to gracefully stop non-faulty jobs (optional)
-	 * 3. Issue a GPU reset (driver-specific)
-	 * 4. Re-submit jobs using drm_sched_resubmit_jobs()
-	 * 5. Restart the scheduler using drm_sched_start(). At that point, new
-	 *    jobs can be queued, and the scheduler thread is unblocked
+	 *
+	 * For a HARDWARE SCHEDULER, a scheduler instance schedules jobs from
+	 * one or more entities to one ring. This implies that all entities
+	 * associated with the affected scheduler cannot be torn down, because
+	 * this would effectively also affect innocent userspace processes which
+	 * did not submit faulty jobs (for example).
+	 *
+	 * Consequently, the procedure to recover with a hardware scheduler
+	 * should look like this:
+	 *
+	 * 1. Stop all schedulers impacted by the reset using drm_sched_stop().
+	 * 2. Kill the entity the faulty job stems from.
+	 * 3. Issue a GPU reset on all faulty rings (driver-specific).
+	 * 4. Re-submit jobs on all schedulers impacted by re-submitting them to
+	 *    the entities which are still alive.
+	 * 5. Restart all schedulers that were stopped in step #1 using
+	 *    drm_sched_start().
 	 *
 	 * Note that some GPUs have distinct hardware queues but need to reset
 	 * the GPU globally, which requires extra synchronization between the
-	 * timeout handler of the different &drm_gpu_scheduler. One way to
-	 * achieve this synchronization is to create an ordered workqueue
-	 * (using alloc_ordered_workqueue()) at the driver level, and pass this
-	 * queue to drm_sched_init(), to guarantee that timeout handlers are
-	 * executed sequentially. The above workflow needs to be slightly
-	 * adjusted in that case:
-	 *
-	 * 1. Stop all schedulers impacted by the reset using drm_sched_stop()
-	 * 2. Try to gracefully stop non-faulty jobs on all queues impacted by
-	 *    the reset (optional)
-	 * 3. Issue a GPU reset on all faulty queues (driver-specific)
-	 * 4. Re-submit jobs on all schedulers impacted by the reset using
-	 *    drm_sched_resubmit_jobs()
-	 * 5. Restart all schedulers that were stopped in step #1 using
-	 *    drm_sched_start()
+	 * timeout handlers of different schedulers. One way to achieve this
+	 * synchronization is to create an ordered workqueue (using
+	 * alloc_ordered_workqueue()) at the driver level, and pass this queue
+	 * as drm_sched_init()'s @timeout_wq parameter. This will guarantee
+	 * that timeout handlers are executed sequentially.
 	 *
-	 * Return DRM_GPU_SCHED_STAT_NOMINAL, when all is normal,
-	 * and the underlying driver has started or completed recovery.
+	 * Return: The scheduler's status, defined by &enum drm_gpu_sched_stat
 	 *
-	 * Return DRM_GPU_SCHED_STAT_ENODEV, if the device is no longer
-	 * available, i.e. has been unplugged.
 	 */
 	enum drm_gpu_sched_stat (*timedout_job)(struct drm_sched_job *sched_job);
 
diff --git a/include/drm/intel/intel-gtt.h b/include/drm/intel/intel-gtt.h
index cb0d5b7200c7..f53bcff01f22 100644
--- a/include/drm/intel/intel-gtt.h
+++ b/include/drm/intel/intel-gtt.h
@@ -28,6 +28,8 @@ void intel_gmch_gtt_insert_sg_entries(struct sg_table *st,
 				      unsigned int pg_start,
 				      unsigned int flags);
 void intel_gmch_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
+dma_addr_t intel_gmch_gtt_read_entry(unsigned int pg,
+				     bool *is_present, bool *is_local);
 
 /* Special gtt memory types */
 #define AGP_DCACHE_MEMORY	1
diff --git a/include/drm/ttm/ttm_bo.h b/include/drm/ttm/ttm_bo.h
index 903cd1030110..cf027558b6db 100644
--- a/include/drm/ttm/ttm_bo.h
+++ b/include/drm/ttm/ttm_bo.h
@@ -172,7 +172,6 @@ struct ttm_bo_kmap_obj {
  * @gfp_retry_mayfail: Set the __GFP_RETRY_MAYFAIL when allocation pages.
  * @allow_res_evict: Allow eviction of reserved BOs. Can be used when multiple
  * BOs share the same reservation object.
- * @force_alloc: Don't check the memory account during suspend or CPU page
  * faults. Should only be used by TTM internally.
  * @resv: Reservation object to allow reserved evictions with.
  * @bytes_moved: Statistics on how many bytes have been moved.
@@ -185,7 +184,6 @@ struct ttm_operation_ctx {
 	bool no_wait_gpu;
 	bool gfp_retry_mayfail;
 	bool allow_res_evict;
-	bool force_alloc;
 	struct dma_resv *resv;
 	uint64_t bytes_moved;
 };