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

drm-misc for 4.12:

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

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

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

Documentation/EDID/edid.S

@@ -59,9 +59,9 @@
 /* Fixed header pattern */
 header:		.byte	0x00,0xff,0xff,0xff,0xff,0xff,0xff,0x00
 
-mfg_id:		.word	swap16(mfgname2id(MFG_LNX1, MFG_LNX2, MFG_LNX3))
+mfg_id:		.hword	swap16(mfgname2id(MFG_LNX1, MFG_LNX2, MFG_LNX3))
 
-prod_code:	.word	0
+prod_code:	.hword	0
 
 /* Serial number. 32 bits, little endian. */
 serial_number:	.long	SERIAL
@@ -177,7 +177,7 @@ std_vres:	.byte	(XY_RATIO<<6)+VFREQ-60
 
 descriptor1:
 /* Pixel clock in 10 kHz units. (0.-655.35 MHz, little-endian) */
-clock:		.word	CLOCK/10
+clock:		.hword	CLOCK/10
 
 /* Horizontal active pixels 8 lsbits (0-4095) */
 x_act_lsb:	.byte	XPIX&0xff

Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt

@@ -10,7 +10,7 @@ Required properties:
 - interrupts: Represent the controller's interrupt to the CPU(s).
 - clocks, clock-names: Phandles to the controller's pll reference
   clock(ref) and APB clock(pclk). For RK3399, a phy config clock
-  (phy_cfg) is additional required. As described in [1].
+  (phy_cfg) and a grf clock(grf) are required. As described in [1].
 - rockchip,grf: this soc should set GRF regs to mux vopl/vopb.
 - ports: contain a port node with endpoint definitions as defined in [2].
   For vopb,set the reg = <0> and set the reg = <1> for vopl.

Documentation/gpu/drm-uapi.rst

@@ -207,6 +207,18 @@ Display CRC Support
 .. kernel-doc:: drivers/gpu/drm/drm_debugfs_crc.c
    :doc: CRC ABI
 
+.. kernel-doc:: drivers/gpu/drm/drm_debugfs_crc.c
+   :export:
+
+Debugfs Support
+---------------
+
+.. kernel-doc:: include/drm/drm_debugfs.h
+   :internal:
+
+.. kernel-doc:: drivers/gpu/drm/drm_debugfs.c
+   :export:
+
 VBlank event handling
 =====================
 

Documentation/gpu/introduction.rst

@@ -60,3 +60,28 @@ checkpatch or sparse. We welcome such contributions.
 
 Anyone looking to kick it up a notch can find a list of janitorial tasks on
 the :ref:`TODO list <todo>`.
+
+Contribution Process
+====================
+
+Mostly the DRM subsystem works like any other kernel subsystem, see :ref:`the
+main process guidelines and documentation <process_index>` for how things work.
+Here we just document some of the specialities of the GPU subsystem.
+
+Feature Merge Deadlines
+-----------------------
+
+All feature work must be in the linux-next tree by the -rc6 release of the
+current release cycle, otherwise they must be postponed and can't reach the next
+merge window. All patches must have landed in the drm-next tree by latest -rc7,
+but if your branch is not in linux-next then this must have happened by -rc6
+already.
+
+After that point only bugfixes (like after the upstream merge window has closed
+with the -rc1 release) are allowed. No new platform enabling or new drivers are
+allowed.
+
+This means that there's a blackout-period of about one month where feature work
+can't be merged. The recommended way to deal with that is having a -next tree
+that's always open, but making sure to not feed it into linux-next during the
+blackout period. As an example, drm-misc works like that.

Documentation/gpu/kms-properties.csv

@@ -1,10 +1,5 @@
 Owner Module/Drivers,Group,Property Name,Type,Property Values,Object attached,Description/Restrictions
 ,,“scaling mode”,ENUM,"{ ""None"", ""Full"", ""Center"", ""Full aspect"" }",Connector,"Supported by: amdgpu, gma500, i915, nouveau and radeon."
-,Connector,“EDID”,BLOB | IMMUTABLE,0,Connector,Contains id of edid blob ptr object.
-,,“DPMS”,ENUM,"{ “On”, “Standby”, “Suspend”, “Off” }",Connector,Contains DPMS operation mode value.
-,,“PATH”,BLOB | IMMUTABLE,0,Connector,Contains topology path to a connector.
-,,“TILE”,BLOB | IMMUTABLE,0,Connector,Contains tiling information for a connector.
-,,“CRTC_ID”,OBJECT,DRM_MODE_OBJECT_CRTC,Connector,CRTC that connector is attached to (atomic)
 ,DVI-I,“subconnector”,ENUM,"{ “Unknown”, “DVI-D”, “DVI-A” }",Connector,TBD
 ,,“select subconnector”,ENUM,"{ “Automatic”, “DVI-D”, “DVI-A” }",Connector,TBD
 ,TV,“subconnector”,ENUM,"{ ""Unknown"", ""Composite"", ""SVIDEO"", ""Component"", ""SCART"" }",Connector,TBD

Documentation/gpu/todo.rst

@@ -99,6 +99,30 @@ events for atomic commits correctly. But fixing these bugs is good anyway.
 
 Contact: Daniel Vetter, respective driver maintainers
 
+Better manual-upload support for atomic
+---------------------------------------
+
+This would be especially useful for tinydrm:
+
+- Add a struct drm_rect dirty_clip to drm_crtc_state. When duplicating the
+  crtc state, clear that to the max values, x/y = 0 and w/h = MAX_INT, in
+  __drm_atomic_helper_crtc_duplicate_state().
+
+- Move tinydrm_merge_clips into drm_framebuffer.c, dropping the tinydrm_
+  prefix ofc and using drm_fb_. drm_framebuffer.c makes sense since this
+  is a function useful to implement the fb->dirty function.
+
+- Create a new drm_fb_dirty function which does essentially what e.g.
+  mipi_dbi_fb_dirty does. You can use e.g. drm_atomic_helper_update_plane as the
+  template. But instead of doing a simple full-screen plane update, this new
+  helper also sets crtc_state->dirty_clip to the right coordinates. And of
+  course it needs to check whether the fb is actually active (and maybe where),
+  so there's some book-keeping involved. There's also some good fun involved in
+  scaling things appropriately. For that case we might simply give up and
+  declare the entire area covered by the plane as dirty.
+
+Contact: Noralf Trønnes, Daniel Vetter
+
 Fallout from atomic KMS
 -----------------------
 
@@ -272,6 +296,32 @@ This is a really varied tasks with lots of little bits and pieces:
 
 Contact: Daniel Vetter
 
+Clean up the debugfs support
+----------------------------
+
+There's a bunch of issues with it:
+
+- The drm_info_list ->show() function doesn't even bother to cast to the drm
+  structure for you. This is lazy.
+
+- We probably want to have some support for debugfs files on crtc/connectors and
+  maybe other kms objects directly in core. There's even drm_print support in
+  the funcs for these objects to dump kms state, so it's all there. And then the
+  ->show() functions should obviously give you a pointer to the right object.
+
+- The drm_info_list stuff is centered on drm_minor instead of drm_device. For
+  anything we want to print drm_device (or maybe drm_file) is the right thing.
+
+- The drm_driver->debugfs_init hooks we have is just an artifact of the old
+  midlayered load sequence. DRM debugfs should work more like sysfs, where you
+  can create properties/files for an object anytime you want, and the core
+  takes care of publishing/unpuplishing all the files at register/unregister
+  time. Drivers shouldn't need to worry about these technicalities, and fixing
+  this (together with the drm_minor->drm_device move) would allow us to remove
+  debugfs_init.
+
+Contact: Daniel Vetter
+
 Better Testing
 ==============
 
@@ -310,6 +360,52 @@ Contact: Daniel Vetter
 Driver Specific
 ===============
 
+tinydrm
+-------
+
+Tinydrm is the helper driver for really simple fb drivers. The goal is to make
+those drivers as simple as possible, so lots of room for refactoring:
+
+- backlight helpers, probably best to put them into a new drm_backlight.c.
+  This is because drivers/video is de-facto unmaintained. We could also
+  move drivers/video/backlight to drivers/gpu/backlight and take it all
+  over within drm-misc, but that's more work.
+
+- spi helpers, probably best put into spi core/helper code. Thierry said
+  the spi maintainer is fast&reactive, so shouldn't be a big issue.
+
+- extract the mipi-dbi helper (well, the non-tinydrm specific parts at
+  least) into a separate helper, like we have for mipi-dsi already. Or follow
+  one of the ideas for having a shared dsi/dbi helper, abstracting away the
+  transport details more.
+
+- tinydrm_lastclose could be drm_fb_helper_lastclose. Only thing we need
+  for that is to store the drm_fb_helper pointer somewhere in
+  drm_device->mode_config. And then we could roll that out to all the
+  drivers.
+
+- tinydrm_gem_cma_prime_import_sg_table should probably go into the cma
+  helpers, as a _vmapped variant (since not every driver needs the vmap).
+  And tinydrm_gem_cma_free_object could the be merged into
+  drm_gem_cma_free_object().
+
+- tinydrm_fb_create we could move into drm_simple_pipe, only need to add
+  the fb_create hook to drm_simple_pipe_funcs, which would again simplify a
+  bunch of things (since it gives you a one-stop vfunc for simple drivers).
+
+- Quick aside: The unregister devm stuff is kinda getting the lifetimes of
+  a drm_device wrong. Doesn't matter, since everyone else gets it wrong
+  too :-)
+
+- With the fbdev pointer in dev->mode_config we could also make
+  suspend/resume helpers entirely generic, at least if we add a
+  dev->mode_config.suspend_state. We could even provide a generic pm_ops
+  structure with those.
+
+- also rework the drm_framebuffer_funcs->dirty hook wire-up, see above.
+
+Contact: Noralf Trønnes, Daniel Vetter
+
 Outside DRM
 ===========
 

Documentation/process/index.rst

@@ -3,6 +3,7 @@
 	\renewcommand\thesection*
 	\renewcommand\thesubsection*
 
+.. _process_index:
 
 Working with the kernel development community
 =============================================

MAINTAINERS

@@ -4145,6 +4145,7 @@ F:	Documentation/devicetree/bindings/video/
 F:	Documentation/gpu/
 F:	include/drm/
 F:	include/uapi/drm/
+F:	include/linux/vga*
 
 DRM DRIVERS AND MISC GPU PATCHES
 M:	Daniel Vetter <daniel.vetter@intel.com>
@@ -4158,6 +4159,7 @@ F:	drivers/gpu/vga/
 F:	drivers/gpu/drm/*
 F:	include/drm/drm*
 F:	include/uapi/drm/drm*
+F:	include/linux/vga*
 
 DRM DRIVER FOR AST SERVER GRAPHICS CHIPS
 M:	Dave Airlie <airlied@redhat.com>
@@ -13257,6 +13259,14 @@ L:	kvm@vger.kernel.org
 S:	Maintained
 F:	drivers/vfio/platform/
 
+VGA_SWITCHEROO
+R:	Lukas Wunner <lukas@wunner.de>
+S:	Maintained
+F:	Documentation/gpu/vga-switcheroo.rst
+F:	drivers/gpu/vga/vga_switcheroo.c
+F:	include/linux/vga_switcheroo.h
+T:	git git://anongit.freedesktop.org/drm/drm-misc
+
 VIDEOBUF2 FRAMEWORK
 M:	Pawel Osciak <pawel@osciak.com>
 M:	Marek Szyprowski <m.szyprowski@samsung.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -1929,7 +1929,9 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 		runtime = true;
 	if (amdgpu_device_is_px(ddev))
 		runtime = true;
-	vga_switcheroo_register_client(adev->pdev, &amdgpu_switcheroo_ops, runtime);
+	if (!pci_is_thunderbolt_attached(adev->pdev))
+		vga_switcheroo_register_client(adev->pdev,
+					       &amdgpu_switcheroo_ops, runtime);
 	if (runtime)
 		vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain);
 
@@ -2084,7 +2086,8 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
 	amdgpu_atombios_fini(adev);
 	kfree(adev->bios);
 	adev->bios = NULL;
-	vga_switcheroo_unregister_client(adev->pdev);
+	if (!pci_is_thunderbolt_attached(adev->pdev))
+		vga_switcheroo_unregister_client(adev->pdev);
 	if (adev->flags & AMD_IS_PX)
 		vga_switcheroo_fini_domain_pm_ops(adev->dev);
 	vga_client_register(adev->pdev, NULL, NULL, NULL);

drivers/gpu/drm/amd/amdgpu/amdgpu_display.c

@@ -311,7 +311,8 @@ int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
 				 struct drm_framebuffer *fb,
 				 struct drm_pending_vblank_event *event,
 				 uint32_t page_flip_flags,
-				 uint32_t target)
+				 uint32_t target,
+				 struct drm_modeset_acquire_ctx *ctx)
 {
 	struct amdgpu_bo *new_abo;
 	struct amdgpu_flip_work *work;
@@ -332,7 +333,8 @@ int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
 	return 0;
 }
 
-int amdgpu_crtc_set_config(struct drm_mode_set *set)
+int amdgpu_crtc_set_config(struct drm_mode_set *set,
+			   struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev;
 	struct amdgpu_device *adev;
@@ -349,7 +351,7 @@ int amdgpu_crtc_set_config(struct drm_mode_set *set)
 	if (ret < 0)
 		return ret;
 
-	ret = drm_crtc_helper_set_config(set);
+	ret = drm_crtc_helper_set_config(set, ctx);
 
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 		if (crtc->enabled)

drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c

@@ -103,7 +103,8 @@ int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags)
 	    amdgpu_has_atpx() &&
 	    (amdgpu_is_atpx_hybrid() ||
 	     amdgpu_has_atpx_dgpu_power_cntl()) &&
-	    ((flags & AMD_IS_APU) == 0))
+	    ((flags & AMD_IS_APU) == 0) &&
+	    !pci_is_thunderbolt_attached(dev->pdev))
 		flags |= AMD_IS_PX;
 
 	/* amdgpu_device_init should report only fatal error

drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h

@@ -590,11 +590,13 @@ int amdgpu_align_pitch(struct amdgpu_device *adev, int width, int bpp, bool tile
 /* amdgpu_display.c */
 void amdgpu_print_display_setup(struct drm_device *dev);
 int amdgpu_modeset_create_props(struct amdgpu_device *adev);
-int amdgpu_crtc_set_config(struct drm_mode_set *set);
+int amdgpu_crtc_set_config(struct drm_mode_set *set,
+			   struct drm_modeset_acquire_ctx *ctx);
 int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
 				 struct drm_framebuffer *fb,
 				 struct drm_pending_vblank_event *event,
-				 uint32_t page_flip_flags, uint32_t target);
+				 uint32_t page_flip_flags, uint32_t target,
+				 struct drm_modeset_acquire_ctx *ctx);
 void amdgpu_crtc_cleanup_flip_ctx(struct amdgpu_flip_work *work,
 				  struct amdgpu_bo *new_abo);
 int amdgpu_crtc_prepare_flip(struct drm_crtc *crtc,

drivers/gpu/drm/armada/armada_crtc.c

@@ -1027,7 +1027,8 @@ static void armada_drm_crtc_destroy(struct drm_crtc *crtc)
  * and a mode_set.
  */
 static int armada_drm_crtc_page_flip(struct drm_crtc *crtc,
-	struct drm_framebuffer *fb, struct drm_pending_vblank_event *event, uint32_t page_flip_flags)
+	struct drm_framebuffer *fb, struct drm_pending_vblank_event *event, uint32_t page_flip_flags,
+	struct drm_modeset_acquire_ctx *ctx)
 {
 	struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
 	struct armada_frame_work *work;

drivers/gpu/drm/armada/armada_overlay.c

@@ -94,7 +94,8 @@ static int
 armada_ovl_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
 	struct drm_framebuffer *fb,
 	int crtc_x, int crtc_y, unsigned crtc_w, unsigned crtc_h,
-	uint32_t src_x, uint32_t src_y, uint32_t src_w, uint32_t src_h)
+	uint32_t src_x, uint32_t src_y, uint32_t src_w, uint32_t src_h,
+	struct drm_modeset_acquire_ctx *ctx)
 {
 	struct armada_ovl_plane *dplane = drm_to_armada_ovl_plane(plane);
 	struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
@@ -257,7 +258,8 @@ armada_ovl_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
 	return 0;
 }
 
-static int armada_ovl_plane_disable(struct drm_plane *plane)
+static int armada_ovl_plane_disable(struct drm_plane *plane,
+				    struct drm_modeset_acquire_ctx *ctx)
 {
 	struct armada_ovl_plane *dplane = drm_to_armada_ovl_plane(plane);
 	struct drm_framebuffer *fb;

drivers/gpu/drm/bochs/bochs_fbdev.c

@@ -192,6 +192,8 @@ void bochs_fbdev_fini(struct bochs_device *bochs)
 	if (bochs->fb.initialized)
 		bochs_fbdev_destroy(bochs);
 
-	drm_fb_helper_fini(&bochs->fb.helper);
+	if (bochs->fb.helper.fbdev)
+		drm_fb_helper_fini(&bochs->fb.helper);
+
 	bochs->fb.initialized = false;
 }

drivers/gpu/drm/bochs/bochs_kms.c

@@ -96,7 +96,8 @@ static void bochs_crtc_commit(struct drm_crtc *crtc)
 static int bochs_crtc_page_flip(struct drm_crtc *crtc,
 				struct drm_framebuffer *fb,
 				struct drm_pending_vblank_event *event,
-				uint32_t page_flip_flags)
+				uint32_t page_flip_flags,
+				struct drm_modeset_acquire_ctx *ctx)
 {
 	struct bochs_device *bochs =
 		container_of(crtc, struct bochs_device, crtc);

drivers/gpu/drm/bridge/synopsys/dw-hdmi.c

@@ -1916,7 +1916,7 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
 	if (intr_stat &
 	    (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) {
 		mutex_lock(&hdmi->mutex);
-		if (!hdmi->disabled && !hdmi->force) {
+		if (!hdmi->force) {
 			/*
 			 * If the RX sense status indicates we're disconnected,
 			 * clear the software rxsense status.

drivers/gpu/drm/bridge/ti-tfp410.c

@@ -8,6 +8,10 @@
  *
  */
 
+#include <linux/delay.h>
+#include <linux/fwnode.h>
+#include <linux/gpio/consumer.h>
+#include <linux/irq.h>
 #include <linux/module.h>
 #include <linux/of_graph.h>
 #include <linux/platform_device.h>
@@ -18,11 +22,15 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
 
+#define HOTPLUG_DEBOUNCE_MS		1100
+
 struct tfp410 {
 	struct drm_bridge	bridge;
 	struct drm_connector	connector;
 
 	struct i2c_adapter	*ddc;
+	struct gpio_desc	*hpd;
+	struct delayed_work	hpd_work;
 
 	struct device *dev;
 };
@@ -76,6 +84,13 @@ tfp410_connector_detect(struct drm_connector *connector, bool force)
 {
 	struct tfp410 *dvi = drm_connector_to_tfp410(connector);
 
+	if (dvi->hpd) {
+		if (gpiod_get_value_cansleep(dvi->hpd))
+			return connector_status_connected;
+		else
+			return connector_status_disconnected;
+	}
+
 	if (dvi->ddc) {
 		if (drm_probe_ddc(dvi->ddc))
 			return connector_status_connected;
@@ -106,6 +121,9 @@ static int tfp410_attach(struct drm_bridge *bridge)
 		return -ENODEV;
 	}
 
+	if (dvi->hpd)
+		dvi->connector.polled = DRM_CONNECTOR_POLL_HPD;
+
 	drm_connector_helper_add(&dvi->connector,
 				 &tfp410_con_helper_funcs);
 	ret = drm_connector_init(bridge->dev, &dvi->connector,
@@ -125,7 +143,27 @@ static const struct drm_bridge_funcs tfp410_bridge_funcs = {
 	.attach		= tfp410_attach,
 };
 
-static int tfp410_get_connector_ddc(struct tfp410 *dvi)
+static void tfp410_hpd_work_func(struct work_struct *work)
+{
+	struct tfp410 *dvi;
+
+	dvi = container_of(work, struct tfp410, hpd_work.work);
+
+	if (dvi->bridge.dev)
+		drm_helper_hpd_irq_event(dvi->bridge.dev);
+}
+
+static irqreturn_t tfp410_hpd_irq_thread(int irq, void *arg)
+{
+	struct tfp410 *dvi = arg;
+
+	mod_delayed_work(system_wq, &dvi->hpd_work,
+			msecs_to_jiffies(HOTPLUG_DEBOUNCE_MS));
+
+	return IRQ_HANDLED;
+}
+
+static int tfp410_get_connector_properties(struct tfp410 *dvi)
 {
 	struct device_node *ep = NULL, *connector_node = NULL;
 	struct device_node *ddc_phandle = NULL;
@@ -140,6 +178,17 @@ static int tfp410_get_connector_ddc(struct tfp410 *dvi)
 	if (!connector_node)
 		goto fail;
 
+	dvi->hpd = fwnode_get_named_gpiod(&connector_node->fwnode,
+					"hpd-gpios", 0, GPIOD_IN, "hpd");
+	if (IS_ERR(dvi->hpd)) {
+		ret = PTR_ERR(dvi->hpd);
+		dvi->hpd = NULL;
+		if (ret == -ENOENT)
+			ret = 0;
+		else
+			goto fail;
+	}
+
 	ddc_phandle = of_parse_phandle(connector_node, "ddc-i2c-bus", 0);
 	if (!ddc_phandle)
 		goto fail;
@@ -176,10 +225,23 @@ static int tfp410_init(struct device *dev)
 	dvi->bridge.of_node = dev->of_node;
 	dvi->dev = dev;
 
-	ret = tfp410_get_connector_ddc(dvi);
+	ret = tfp410_get_connector_properties(dvi);
 	if (ret)
 		goto fail;
 
+	if (dvi->hpd) {
+		INIT_DELAYED_WORK(&dvi->hpd_work, tfp410_hpd_work_func);
+
+		ret = devm_request_threaded_irq(dev, gpiod_to_irq(dvi->hpd),
+			NULL, tfp410_hpd_irq_thread, IRQF_TRIGGER_RISING |
+			IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+			"hdmi-hpd", dvi);
+		if (ret) {
+			DRM_ERROR("failed to register hpd interrupt\n");
+			goto fail;
+		}
+	}
+
 	ret = drm_bridge_add(&dvi->bridge);
 	if (ret) {
 		dev_err(dev, "drm_bridge_add() failed: %d\n", ret);
@@ -189,6 +251,8 @@ static int tfp410_init(struct device *dev)
 	return 0;
 fail:
 	i2c_put_adapter(dvi->ddc);
+	if (dvi->hpd)
+		gpiod_put(dvi->hpd);
 	return ret;
 }
 
@@ -196,10 +260,14 @@ static int tfp410_fini(struct device *dev)
 {
 	struct tfp410 *dvi = dev_get_drvdata(dev);
 
+	cancel_delayed_work_sync(&dvi->hpd_work);
+
 	drm_bridge_remove(&dvi->bridge);
 
 	if (dvi->ddc)
 		i2c_put_adapter(dvi->ddc);
+	if (dvi->hpd)
+		gpiod_put(dvi->hpd);
 
 	return 0;
 }

drivers/gpu/drm/drm_atomic_helper.c

@@ -2077,6 +2077,7 @@ EXPORT_SYMBOL(drm_atomic_helper_swap_state);
  * @src_y: y offset of @fb for panning
  * @src_w: width of source rectangle in @fb
  * @src_h: height of source rectangle in @fb
+ * @ctx: lock acquire context
  *
  * Provides a default plane update handler using the atomic driver interface.
  *
@@ -2089,7 +2090,8 @@ int drm_atomic_helper_update_plane(struct drm_plane *plane,
 				   int crtc_x, int crtc_y,
 				   unsigned int crtc_w, unsigned int crtc_h,
 				   uint32_t src_x, uint32_t src_y,
-				   uint32_t src_w, uint32_t src_h)
+				   uint32_t src_w, uint32_t src_h,
+				   struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_atomic_state *state;
 	struct drm_plane_state *plane_state;
@@ -2099,8 +2101,7 @@ int drm_atomic_helper_update_plane(struct drm_plane *plane,
 	if (!state)
 		return -ENOMEM;
 
-	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
-retry:
+	state->acquire_ctx = ctx;
 	plane_state = drm_atomic_get_plane_state(state, plane);
 	if (IS_ERR(plane_state)) {
 		ret = PTR_ERR(plane_state);
@@ -2125,59 +2126,33 @@ retry:
 
 	ret = drm_atomic_commit(state);
 fail:
-	if (ret == -EDEADLK)
-		goto backoff;
-
 	drm_atomic_state_put(state);
 	return ret;
-
-backoff:
-	drm_atomic_state_clear(state);
-	drm_atomic_legacy_backoff(state);
-
-	/*
-	 * Someone might have exchanged the framebuffer while we dropped locks
-	 * in the backoff code. We need to fix up the fb refcount tracking the
-	 * core does for us.
-	 */
-	plane->old_fb = plane->fb;
-
-	goto retry;
 }
 EXPORT_SYMBOL(drm_atomic_helper_update_plane);
 
 /**
  * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic
  * @plane: plane to disable
+ * @ctx: lock acquire context
  *
  * Provides a default plane disable handler using the atomic driver interface.
  *
  * RETURNS:
  * Zero on success, error code on failure
  */
-int drm_atomic_helper_disable_plane(struct drm_plane *plane)
+int drm_atomic_helper_disable_plane(struct drm_plane *plane,
+				    struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_atomic_state *state;
 	struct drm_plane_state *plane_state;
 	int ret = 0;
 
-	/*
-	 * FIXME: Without plane->crtc set we can't get at the implicit legacy
-	 * acquire context. The real fix will be to wire the acquire ctx through
-	 * everywhere we need it, but meanwhile prevent chaos by just skipping
-	 * this noop. The critical case is the cursor ioctls which a) only grab
-	 * crtc/cursor-plane locks (so we need the crtc to get at the right
-	 * acquire context) and b) can try to disable the plane multiple times.
-	 */
-	if (!plane->crtc)
-		return 0;
-
 	state = drm_atomic_state_alloc(plane->dev);
 	if (!state)
 		return -ENOMEM;
 
-	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(plane->crtc);
-retry:
+	state->acquire_ctx = ctx;
 	plane_state = drm_atomic_get_plane_state(state, plane);
 	if (IS_ERR(plane_state)) {
 		ret = PTR_ERR(plane_state);
@@ -2193,24 +2168,8 @@ retry:
 
 	ret = drm_atomic_commit(state);
 fail:
-	if (ret == -EDEADLK)
-		goto backoff;
-
 	drm_atomic_state_put(state);
 	return ret;
-
-backoff:
-	drm_atomic_state_clear(state);
-	drm_atomic_legacy_backoff(state);
-
-	/*
-	 * Someone might have exchanged the framebuffer while we dropped locks
-	 * in the backoff code. We need to fix up the fb refcount tracking the
-	 * core does for us.
-	 */
-	plane->old_fb = plane->fb;
-
-	goto retry;
 }
 EXPORT_SYMBOL(drm_atomic_helper_disable_plane);
 
@@ -2306,6 +2265,7 @@ static int update_output_state(struct drm_atomic_state *state,
 /**
  * drm_atomic_helper_set_config - set a new config from userspace
  * @set: mode set configuration
+ * @ctx: lock acquisition context
  *
  * Provides a default crtc set_config handler using the atomic driver interface.
  *
@@ -2318,7 +2278,8 @@ static int update_output_state(struct drm_atomic_state *state,
  * Returns:
  * Returns 0 on success, negative errno numbers on failure.
  */
-int drm_atomic_helper_set_config(struct drm_mode_set *set)
+int drm_atomic_helper_set_config(struct drm_mode_set *set,
+				 struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_atomic_state *state;
 	struct drm_crtc *crtc = set->crtc;
@@ -2329,32 +2290,16 @@ int drm_atomic_helper_set_config(struct drm_mode_set *set)
 		return -ENOMEM;
 
 	state->legacy_set_config = true;
-	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
-retry:
+	state->acquire_ctx = ctx;
 	ret = __drm_atomic_helper_set_config(set, state);
 	if (ret != 0)
 		goto fail;
 
 	ret = drm_atomic_commit(state);
-fail:
-	if (ret == -EDEADLK)
-		goto backoff;
 
+fail:
 	drm_atomic_state_put(state);
 	return ret;
-
-backoff:
-	drm_atomic_state_clear(state);
-	drm_atomic_legacy_backoff(state);
-
-	/*
-	 * Someone might have exchanged the framebuffer while we dropped locks
-	 * in the backoff code. We need to fix up the fb refcount tracking the
-	 * core does for us.
-	 */
-	crtc->primary->old_fb = crtc->primary->fb;
-
-	goto retry;
 }
 EXPORT_SYMBOL(drm_atomic_helper_set_config);
 
@@ -2443,7 +2388,8 @@ commit:
  * that they are connected to.
  *
  * This is used for example in suspend/resume to disable all currently active
- * functions when suspending.
+ * functions when suspending. If you just want to shut down everything at e.g.
+ * driver unload, look at drm_atomic_helper_shutdown().
  *
  * Note that if callers haven't already acquired all modeset locks this might
  * return -EDEADLK, which must be handled by calling drm_modeset_backoff().
@@ -2452,7 +2398,8 @@ commit:
  * 0 on success or a negative error code on failure.
  *
  * See also:
- * drm_atomic_helper_suspend(), drm_atomic_helper_resume()
+ * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and
+ * drm_atomic_helper_shutdown().
  */
 int drm_atomic_helper_disable_all(struct drm_device *dev,
 				  struct drm_modeset_acquire_ctx *ctx)
@@ -2516,6 +2463,42 @@ free:
 
 EXPORT_SYMBOL(drm_atomic_helper_disable_all);
 
+/**
+ * drm_atomic_helper_shutdown - shutdown all CRTC
+ * @dev: DRM device
+ *
+ * This shuts down all CRTC, which is useful for driver unloading. Shutdown on
+ * suspend should instead be handled with drm_atomic_helper_suspend(), since
+ * that also takes a snapshot of the modeset state to be restored on resume.
+ *
+ * This is just a convenience wrapper around drm_atomic_helper_disable_all(),
+ * and it is the atomic version of drm_crtc_force_disable_all().
+ */
+void drm_atomic_helper_shutdown(struct drm_device *dev)
+{
+	struct drm_modeset_acquire_ctx ctx;
+	int ret;
+
+	drm_modeset_acquire_init(&ctx, 0);
+	while (1) {
+		ret = drm_modeset_lock_all_ctx(dev, &ctx);
+		if (!ret)
+			ret = drm_atomic_helper_disable_all(dev, &ctx);
+
+		if (ret != -EDEADLK)
+			break;
+
+		drm_modeset_backoff(&ctx);
+	}
+
+	if (ret)
+		DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret);
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+}
+EXPORT_SYMBOL(drm_atomic_helper_shutdown);
+
 /**
  * drm_atomic_helper_suspend - subsystem-level suspend helper
  * @dev: DRM device
@@ -2862,6 +2845,7 @@ static int page_flip_common(
  * @fb: DRM framebuffer
  * @event: optional DRM event to signal upon completion
  * @flags: flip flags for non-vblank sync'ed updates
+ * @ctx: lock acquisition context
  *
  * Provides a default &drm_crtc_funcs.page_flip implementation
  * using the atomic driver interface.
@@ -2875,7 +2859,8 @@ static int page_flip_common(
 int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
 				struct drm_framebuffer *fb,
 				struct drm_pending_vblank_event *event,
-				uint32_t flags)
+				uint32_t flags,
+				struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_plane *plane = crtc->primary;
 	struct drm_atomic_state *state;
@@ -2885,34 +2870,16 @@ int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
 	if (!state)
 		return -ENOMEM;
 
-	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
+	state->acquire_ctx = ctx;
 
-retry:
 	ret = page_flip_common(state, crtc, fb, event, flags);
 	if (ret != 0)
 		goto fail;
 
 	ret = drm_atomic_nonblocking_commit(state);
-
 fail:
-	if (ret == -EDEADLK)
-		goto backoff;
-
 	drm_atomic_state_put(state);
 	return ret;
-
-backoff:
-	drm_atomic_state_clear(state);
-	drm_atomic_legacy_backoff(state);
-
-	/*
-	 * Someone might have exchanged the framebuffer while we dropped locks
-	 * in the backoff code. We need to fix up the fb refcount tracking the
-	 * core does for us.
-	 */
-	plane->old_fb = plane->fb;
-
-	goto retry;
 }
 EXPORT_SYMBOL(drm_atomic_helper_page_flip);
 
@@ -2923,6 +2890,7 @@ EXPORT_SYMBOL(drm_atomic_helper_page_flip);
  * @event: optional DRM event to signal upon completion
  * @flags: flip flags for non-vblank sync'ed updates
  * @target: specifying the target vblank period when the flip to take effect
+ * @ctx: lock acquisition context
  *
  * Provides a default &drm_crtc_funcs.page_flip_target implementation.
  * Similar to drm_atomic_helper_page_flip() with extra parameter to specify
@@ -2936,7 +2904,8 @@ int drm_atomic_helper_page_flip_target(
 				struct drm_framebuffer *fb,
 				struct drm_pending_vblank_event *event,
 				uint32_t flags,
-				uint32_t target)
+				uint32_t target,
+				struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_plane *plane = crtc->primary;
 	struct drm_atomic_state *state;
@@ -2947,9 +2916,8 @@ int drm_atomic_helper_page_flip_target(
 	if (!state)
 		return -ENOMEM;
 
-	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
+	state->acquire_ctx = ctx;
 
-retry:
 	ret = page_flip_common(state, crtc, fb, event, flags);
 	if (ret != 0)
 		goto fail;
@@ -2962,26 +2930,9 @@ retry:
 	crtc_state->target_vblank = target;
 
 	ret = drm_atomic_nonblocking_commit(state);
-
 fail:
-	if (ret == -EDEADLK)
-		goto backoff;
-
 	drm_atomic_state_put(state);
 	return ret;
-
-backoff:
-	drm_atomic_state_clear(state);
-	drm_atomic_legacy_backoff(state);
-
-	/*
-	 * Someone might have exchanged the framebuffer while we dropped locks
-	 * in the backoff code. We need to fix up the fb refcount tracking the
-	 * core does for us.
-	 */
-	plane->old_fb = plane->fb;
-
-	goto retry;
 }
 EXPORT_SYMBOL(drm_atomic_helper_page_flip_target);
 

drivers/gpu/drm/drm_crtc.c

@@ -94,6 +94,8 @@ EXPORT_SYMBOL(drm_crtc_from_index);
  * drm_crtc_force_disable - Forcibly turn off a CRTC
  * @crtc: CRTC to turn off
  *
+ * Note: This should only be used by non-atomic legacy drivers.
+ *
  * Returns:
  * Zero on success, error code on failure.
  */
@@ -103,6 +105,8 @@ int drm_crtc_force_disable(struct drm_crtc *crtc)
 		.crtc = crtc,
 	};
 
+	WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev));
+
 	return drm_mode_set_config_internal(&set);
 }
 EXPORT_SYMBOL(drm_crtc_force_disable);
@@ -114,6 +118,9 @@ EXPORT_SYMBOL(drm_crtc_force_disable);
  * Drivers may want to call this on unload to ensure that all displays are
  * unlit and the GPU is in a consistent, low power state. Takes modeset locks.
  *
+ * Note: This should only be used by non-atomic legacy drivers. For an atomic
+ * version look at drm_atomic_helper_shutdown().
+ *
  * Returns:
  * Zero on success, error code on failure.
  */
@@ -399,9 +406,9 @@ int drm_mode_getcrtc(struct drm_device *dev,
 	if (!crtc)
 		return -ENOENT;
 
-	drm_modeset_lock_crtc(crtc, crtc->primary);
 	crtc_resp->gamma_size = crtc->gamma_size;
 
+	drm_modeset_lock(&crtc->primary->mutex, NULL);
 	if (crtc->primary->state && crtc->primary->state->fb)
 		crtc_resp->fb_id = crtc->primary->state->fb->base.id;
 	else if (!crtc->primary->state && crtc->primary->fb)
@@ -409,9 +416,14 @@ int drm_mode_getcrtc(struct drm_device *dev,
 	else
 		crtc_resp->fb_id = 0;
 
-	if (crtc->state) {
+	if (crtc->primary->state) {
 		crtc_resp->x = crtc->primary->state->src_x >> 16;
 		crtc_resp->y = crtc->primary->state->src_y >> 16;
+	}
+	drm_modeset_unlock(&crtc->primary->mutex);
+
+	drm_modeset_lock(&crtc->mutex, NULL);
+	if (crtc->state) {
 		if (crtc->state->enable) {
 			drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
 			crtc_resp->mode_valid = 1;
@@ -430,23 +442,13 @@ int drm_mode_getcrtc(struct drm_device *dev,
 			crtc_resp->mode_valid = 0;
 		}
 	}
-	drm_modeset_unlock_crtc(crtc);
+	drm_modeset_unlock(&crtc->mutex);
 
 	return 0;
 }
 
-/**
- * drm_mode_set_config_internal - helper to call &drm_mode_config_funcs.set_config
- * @set: modeset config to set
- *
- * This is a little helper to wrap internal calls to the
- * &drm_mode_config_funcs.set_config driver interface. The only thing it adds is
- * correct refcounting dance.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_set_config_internal(struct drm_mode_set *set)
+static int __drm_mode_set_config_internal(struct drm_mode_set *set,
+					  struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_crtc *crtc = set->crtc;
 	struct drm_framebuffer *fb;
@@ -463,7 +465,7 @@ int drm_mode_set_config_internal(struct drm_mode_set *set)
 
 	fb = set->fb;
 
-	ret = crtc->funcs->set_config(set);
+	ret = crtc->funcs->set_config(set, ctx);
 	if (ret == 0) {
 		crtc->primary->crtc = crtc;
 		crtc->primary->fb = fb;
@@ -479,6 +481,25 @@ int drm_mode_set_config_internal(struct drm_mode_set *set)
 
 	return ret;
 }
+/**
+ * drm_mode_set_config_internal - helper to call &drm_mode_config_funcs.set_config
+ * @set: modeset config to set
+ *
+ * This is a little helper to wrap internal calls to the
+ * &drm_mode_config_funcs.set_config driver interface. The only thing it adds is
+ * correct refcounting dance.
+ *
+ * This should only be used by non-atomic legacy drivers.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_set_config_internal(struct drm_mode_set *set)
+{
+	WARN_ON(drm_drv_uses_atomic_modeset(set->crtc->dev));
+
+	return __drm_mode_set_config_internal(set, NULL);
+}
 EXPORT_SYMBOL(drm_mode_set_config_internal);
 
 /**
@@ -534,6 +555,7 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
 	struct drm_display_mode *mode = NULL;
 	struct drm_mode_set set;
 	uint32_t __user *set_connectors_ptr;
+	struct drm_modeset_acquire_ctx ctx;
 	int ret;
 	int i;
 
@@ -547,15 +569,18 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
 	if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
 		return -ERANGE;
 
-	drm_modeset_lock_all(dev);
 	crtc = drm_crtc_find(dev, crtc_req->crtc_id);
 	if (!crtc) {
 		DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
-		ret = -ENOENT;
-		goto out;
+		return -ENOENT;
 	}
 	DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
 
+	drm_modeset_acquire_init(&ctx, 0);
+retry:
+	ret = drm_modeset_lock_all_ctx(crtc->dev, &ctx);
+	if (ret)
+		goto out;
 	if (crtc_req->mode_valid) {
 		/* If we have a mode we need a framebuffer. */
 		/* If we pass -1, set the mode with the currently bound fb */
@@ -676,7 +701,7 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
 	set.connectors = connector_set;
 	set.num_connectors = crtc_req->count_connectors;
 	set.fb = fb;
-	ret = drm_mode_set_config_internal(&set);
+	ret = __drm_mode_set_config_internal(&set, &ctx);
 
 out:
 	if (fb)
@@ -690,7 +715,13 @@ out:
 	}
 	kfree(connector_set);
 	drm_mode_destroy(dev, mode);
-	drm_modeset_unlock_all(dev);
+	if (ret == -EDEADLK) {
+		drm_modeset_backoff(&ctx);
+		goto retry;
+	}
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+
 	return ret;
 }
 

drivers/gpu/drm/drm_crtc_helper.c

@@ -476,6 +476,7 @@ drm_crtc_helper_disable(struct drm_crtc *crtc)
 /**
  * drm_crtc_helper_set_config - set a new config from userspace
  * @set: mode set configuration
+ * @ctx: lock acquire context, not used here
  *
  * The drm_crtc_helper_set_config() helper function implements the of
  * &drm_crtc_funcs.set_config callback for drivers using the legacy CRTC
@@ -510,7 +511,8 @@ drm_crtc_helper_disable(struct drm_crtc *crtc)
  * Returns:
  * Returns 0 on success, negative errno numbers on failure.
  */
-int drm_crtc_helper_set_config(struct drm_mode_set *set)
+int drm_crtc_helper_set_config(struct drm_mode_set *set,
+			       struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev;
 	struct drm_crtc **save_encoder_crtcs, *new_crtc;

drivers/gpu/drm/drm_debugfs.c

@@ -1,10 +1,3 @@
-/**
- * \file drm_debugfs.c
- * debugfs support for DRM
- *
- * \author Ben Gamari <bgamari@gmail.com>
- */
-
 /*
  * Created: Sun Dec 21 13:08:50 2008 by bgamari@gmail.com
  *
@@ -34,9 +27,12 @@
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/export.h>
-#include <drm/drmP.h>
+
+#include <drm/drm_debugfs.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_atomic.h>
+#include <drm/drmP.h>
+
 #include "drm_internal.h"
 #include "drm_crtc_internal.h"
 
@@ -72,16 +68,15 @@ static const struct file_operations drm_debugfs_fops = {
 
 
 /**
- * Initialize a given set of debugfs files for a device
- *
- * \param files The array of files to create
- * \param count The number of files given
- * \param root DRI debugfs dir entry.
- * \param minor device minor number
- * \return Zero on success, non-zero on failure
+ * drm_debugfs_create_files - Initialize a given set of debugfs files for DRM
+ * 			minor
+ * @files: The array of files to create
+ * @count: The number of files given
+ * @root: DRI debugfs dir entry.
+ * @minor: device minor number
  *
  * Create a given set of debugfs files represented by an array of
- * &drm_info_list in the given root directory. These files will be removed
+ * &struct drm_info_list in the given root directory. These files will be removed
  * automatically on drm_debugfs_cleanup().
  */
 int drm_debugfs_create_files(const struct drm_info_list *files, int count,
@@ -130,17 +125,6 @@ fail:
 }
 EXPORT_SYMBOL(drm_debugfs_create_files);
 
-/**
- * Initialize the DRI debugfs filesystem for a device
- *
- * \param dev DRM device
- * \param minor device minor number
- * \param root DRI debugfs dir entry.
- *
- * Create the DRI debugfs root entry "/sys/kernel/debug/dri", the device debugfs root entry
- * "/sys/kernel/debug/dri/%minor%/", and each entry in debugfs_list as
- * "/sys/kernel/debug/dri/%minor%/%name%".
- */
 int drm_debugfs_init(struct drm_minor *minor, int minor_id,
 		     struct dentry *root)
 {
@@ -186,16 +170,6 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
 }
 
 
-/**
- * Remove a list of debugfs files
- *
- * \param files The list of files
- * \param count The number of files
- * \param minor The minor of which we should remove the files
- * \return always zero.
- *
- * Remove all debugfs entries created by debugfs_init().
- */
 int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
 			     struct drm_minor *minor)
 {
@@ -232,14 +206,6 @@ static void drm_debugfs_remove_all_files(struct drm_minor *minor)
 	mutex_unlock(&minor->debugfs_lock);
 }
 
-/**
- * Cleanup the debugfs filesystem resources.
- *
- * \param minor device minor number.
- * \return always zero.
- *
- * Remove all debugfs entries created by debugfs_init().
- */
 int drm_debugfs_cleanup(struct drm_minor *minor)
 {
 	if (!minor->debugfs_root)

drivers/gpu/drm/drm_debugfs_crc.c

@@ -36,7 +36,7 @@
  * DOC: CRC ABI
  *
  * DRM device drivers can provide to userspace CRC information of each frame as
- * it reached a given hardware component (a "source").
+ * it reached a given hardware component (a CRC sampling "source").
  *
  * Userspace can control generation of CRCs in a given CRTC by writing to the
  * file dri/0/crtc-N/crc/control in debugfs, with N being the index of the CRTC.
@@ -57,6 +57,11 @@
  * rely on being able to generate matching CRC values for the frame contents that
  * it submits. In this general case, the maximum userspace can do is to compare
  * the reported CRCs of frames that should have the same contents.
+ *
+ * On the driver side the implementation effort is minimal, drivers only need to
+ * implement &drm_crtc_funcs.set_crc_source. The debugfs files are automatically
+ * set up if that vfunc is set. CRC samples need to be captured in the driver by
+ * calling drm_crtc_add_crc_entry().
  */
 
 static int crc_control_show(struct seq_file *m, void *data)
@@ -280,16 +285,6 @@ static const struct file_operations drm_crtc_crc_data_fops = {
 	.release = crtc_crc_release,
 };
 
-/**
- * drm_debugfs_crtc_crc_add - Add files to debugfs for capture of frame CRCs
- * @crtc: CRTC to whom the frames will belong
- *
- * Adds files to debugfs directory that allows userspace to control the
- * generation of frame CRCs and to read them.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
 int drm_debugfs_crtc_crc_add(struct drm_crtc *crtc)
 {
 	struct dentry *crc_ent, *ent;

drivers/gpu/drm/drm_dp_mst_topology.c

@@ -2042,10 +2042,6 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms
 			goto out_unlock;
 		}
 
-		mgr->total_pbn = 2560;
-		mgr->total_slots = DIV_ROUND_UP(mgr->total_pbn, mgr->pbn_div);
-		mgr->avail_slots = mgr->total_slots;
-
 		/* add initial branch device at LCT 1 */
 		mstb = drm_dp_add_mst_branch_device(1, NULL);
 		if (mstb == NULL) {
@@ -2475,26 +2471,25 @@ int drm_dp_find_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr,
 
 	num_slots = DIV_ROUND_UP(pbn, mgr->pbn_div);
 
-	if (num_slots > mgr->avail_slots)
+	/* max. time slots - one slot for MTP header */
+	if (num_slots > 63)
 		return -ENOSPC;
 	return num_slots;
 }
 EXPORT_SYMBOL(drm_dp_find_vcpi_slots);
 
 static int drm_dp_init_vcpi(struct drm_dp_mst_topology_mgr *mgr,
-			    struct drm_dp_vcpi *vcpi, int pbn)
+			    struct drm_dp_vcpi *vcpi, int pbn, int slots)
 {
-	int num_slots;
 	int ret;
 
-	num_slots = DIV_ROUND_UP(pbn, mgr->pbn_div);
-
-	if (num_slots > mgr->avail_slots)
+	/* max. time slots - one slot for MTP header */
+	if (slots > 63)
 		return -ENOSPC;
 
 	vcpi->pbn = pbn;
-	vcpi->aligned_pbn = num_slots * mgr->pbn_div;
-	vcpi->num_slots = num_slots;
+	vcpi->aligned_pbn = slots * mgr->pbn_div;
+	vcpi->num_slots = slots;
 
 	ret = drm_dp_mst_assign_payload_id(mgr, vcpi);
 	if (ret < 0)
@@ -2509,7 +2504,8 @@ static int drm_dp_init_vcpi(struct drm_dp_mst_topology_mgr *mgr,
  * @pbn: payload bandwidth number to request
  * @slots: returned number of slots for this PBN.
  */
-bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, int pbn, int *slots)
+bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr,
+			      struct drm_dp_mst_port *port, int pbn, int slots)
 {
 	int ret;
 
@@ -2517,22 +2513,25 @@ bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp
 	if (!port)
 		return false;
 
+	if (slots < 0)
+		return false;
+
 	if (port->vcpi.vcpi > 0) {
 		DRM_DEBUG_KMS("payload: vcpi %d already allocated for pbn %d - requested pbn %d\n", port->vcpi.vcpi, port->vcpi.pbn, pbn);
 		if (pbn == port->vcpi.pbn) {
-			*slots = port->vcpi.num_slots;
 			drm_dp_put_port(port);
 			return true;
 		}
 	}
 
-	ret = drm_dp_init_vcpi(mgr, &port->vcpi, pbn);
+	ret = drm_dp_init_vcpi(mgr, &port->vcpi, pbn, slots);
 	if (ret) {
-		DRM_DEBUG_KMS("failed to init vcpi %d %d %d\n", DIV_ROUND_UP(pbn, mgr->pbn_div), mgr->avail_slots, ret);
+		DRM_DEBUG_KMS("failed to init vcpi slots=%d max=63 ret=%d\n",
+				DIV_ROUND_UP(pbn, mgr->pbn_div), ret);
 		goto out;
 	}
-	DRM_DEBUG_KMS("initing vcpi for %d %d\n", pbn, port->vcpi.num_slots);
-	*slots = port->vcpi.num_slots;
+	DRM_DEBUG_KMS("initing vcpi for pbn=%d slots=%d\n",
+			pbn, port->vcpi.num_slots);
 
 	drm_dp_put_port(port);
 	return true;

drivers/gpu/drm/drm_fb_cma_helper.c

@@ -177,7 +177,7 @@ struct drm_framebuffer *drm_fb_cma_create_with_funcs(struct drm_device *dev,
 	int ret;
 	int i;
 
-	info = drm_format_info(mode_cmd->pixel_format);
+	info = drm_get_format_info(dev, mode_cmd);
 	if (!info)
 		return ERR_PTR(-EINVAL);
 

drivers/gpu/drm/drm_fourcc.c

@@ -206,6 +206,31 @@ const struct drm_format_info *drm_format_info(u32 format)
 }
 EXPORT_SYMBOL(drm_format_info);
 
+/**
+ * drm_get_format_info - query information for a given framebuffer configuration
+ * @dev: DRM device
+ * @mode_cmd: metadata from the userspace fb creation request
+ *
+ * Returns:
+ * The instance of struct drm_format_info that describes the pixel format, or
+ * NULL if the format is unsupported.
+ */
+const struct drm_format_info *
+drm_get_format_info(struct drm_device *dev,
+		    const struct drm_mode_fb_cmd2 *mode_cmd)
+{
+	const struct drm_format_info *info = NULL;
+
+	if (dev->mode_config.funcs->get_format_info)
+		info = dev->mode_config.funcs->get_format_info(mode_cmd);
+
+	if (!info)
+		info = drm_format_info(mode_cmd->pixel_format);
+
+	return info;
+}
+EXPORT_SYMBOL(drm_get_format_info);
+
 /**
  * drm_format_num_planes - get the number of planes for format
  * @format: pixel format (DRM_FORMAT_*)

drivers/gpu/drm/drm_framebuffer.c

@@ -126,11 +126,31 @@ int drm_mode_addfb(struct drm_device *dev,
 	return 0;
 }
 
-static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
+static int fb_plane_width(int width,
+			  const struct drm_format_info *format, int plane)
+{
+	if (plane == 0)
+		return width;
+
+	return DIV_ROUND_UP(width, format->hsub);
+}
+
+static int fb_plane_height(int height,
+			   const struct drm_format_info *format, int plane)
+{
+	if (plane == 0)
+		return height;
+
+	return DIV_ROUND_UP(height, format->vsub);
+}
+
+static int framebuffer_check(struct drm_device *dev,
+			     const struct drm_mode_fb_cmd2 *r)
 {
 	const struct drm_format_info *info;
 	int i;
 
+	/* check if the format is supported at all */
 	info = __drm_format_info(r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN);
 	if (!info) {
 		struct drm_format_name_buf format_name;
@@ -140,19 +160,22 @@ static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
 		return -EINVAL;
 	}
 
-	if (r->width == 0 || r->width % info->hsub) {
+	/* now let the driver pick its own format info */
+	info = drm_get_format_info(dev, r);
+
+	if (r->width == 0) {
 		DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
 		return -EINVAL;
 	}
 
-	if (r->height == 0 || r->height % info->vsub) {
+	if (r->height == 0) {
 		DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
 		return -EINVAL;
 	}
 
 	for (i = 0; i < info->num_planes; i++) {
-		unsigned int width = r->width / (i != 0 ? info->hsub : 1);
-		unsigned int height = r->height / (i != 0 ? info->vsub : 1);
+		unsigned int width = fb_plane_width(r->width, info, i);
+		unsigned int height = fb_plane_height(r->height, info, i);
 		unsigned int cpp = info->cpp[i];
 
 		if (!r->handles[i]) {
@@ -263,7 +286,7 @@ drm_internal_framebuffer_create(struct drm_device *dev,
 		return ERR_PTR(-EINVAL);
 	}
 
-	ret = framebuffer_check(r);
+	ret = framebuffer_check(dev, r);
 	if (ret)
 		return ERR_PTR(ret);
 
@@ -816,10 +839,7 @@ int drm_framebuffer_plane_width(int width,
 	if (plane >= fb->format->num_planes)
 		return 0;
 
-	if (plane == 0)
-		return width;
-
-	return width / fb->format->hsub;
+	return fb_plane_width(width, fb->format, plane);
 }
 EXPORT_SYMBOL(drm_framebuffer_plane_width);
 
@@ -838,9 +858,6 @@ int drm_framebuffer_plane_height(int height,
 	if (plane >= fb->format->num_planes)
 		return 0;
 
-	if (plane == 0)
-		return height;
-
-	return height / fb->format->vsub;
+	return fb_plane_height(height, fb->format, plane);
 }
 EXPORT_SYMBOL(drm_framebuffer_plane_height);

drivers/gpu/drm/drm_internal.h

@@ -100,7 +100,7 @@ int drm_gem_open_ioctl(struct drm_device *dev, void *data,
 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
 
-/* drm_debugfs.c */
+/* drm_debugfs.c drm_debugfs_crc.c */
 #if defined(CONFIG_DEBUG_FS)
 int drm_debugfs_init(struct drm_minor *minor, int minor_id,
 		     struct dentry *root);

drivers/gpu/drm/drm_ioctl.c

@@ -28,6 +28,7 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include <drm/drm_ioctl.h>
 #include <drm/drmP.h>
 #include <drm/drm_auth.h>
 #include "drm_legacy.h"

drivers/gpu/drm/drm_irq.c

@@ -325,6 +325,8 @@ static void vblank_disable_and_save(struct drm_device *dev, unsigned int pipe)
 	struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
 	unsigned long irqflags;
 
+	assert_spin_locked(&dev->vbl_lock);
+
 	/* Prevent vblank irq processing while disabling vblank irqs,
 	 * so no updates of timestamps or count can happen after we've
 	 * disabled. Needed to prevent races in case of delayed irq's.
@@ -384,7 +386,7 @@ void drm_vblank_cleanup(struct drm_device *dev)
 	for (pipe = 0; pipe < dev->num_crtcs; pipe++) {
 		struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
 
-		WARN_ON(vblank->enabled &&
+		WARN_ON(READ_ONCE(vblank->enabled) &&
 			drm_core_check_feature(dev, DRIVER_MODESET));
 
 		del_timer_sync(&vblank->disable_timer);
@@ -810,14 +812,6 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
 	/* Return upper bound of timestamp precision error. */
 	*max_error = duration_ns;
 
-	/* Check if in vblank area:
-	 * vpos is >=0 in video scanout area, but negative
-	 * within vblank area, counting down the number of lines until
-	 * start of scanout.
-	 */
-	if (vbl_status & DRM_SCANOUTPOS_IN_VBLANK)
-		ret |= DRM_VBLANKTIME_IN_VBLANK;
-
 	/* Convert scanout position into elapsed time at raw_time query
 	 * since start of scanout at first display scanline. delta_ns
 	 * can be negative if start of scanout hasn't happened yet.
@@ -1105,11 +1099,16 @@ static int drm_vblank_enable(struct drm_device *dev, unsigned int pipe)
 		 */
 		ret = __enable_vblank(dev, pipe);
 		DRM_DEBUG("enabling vblank on crtc %u, ret: %d\n", pipe, ret);
-		if (ret)
+		if (ret) {
 			atomic_dec(&vblank->refcount);
-		else {
-			vblank->enabled = true;
+		} else {
 			drm_update_vblank_count(dev, pipe, 0);
+			/* drm_update_vblank_count() includes a wmb so we just
+			 * need to ensure that the compiler emits the write
+			 * to mark the vblank as enabled after the call
+			 * to drm_update_vblank_count().
+			 */
+			WRITE_ONCE(vblank->enabled, true);
 		}
 	}
 
@@ -1487,6 +1486,11 @@ int drm_legacy_modeset_ctl(struct drm_device *dev, void *data,
 	return 0;
 }
 
+static inline bool vblank_passed(u32 seq, u32 ref)
+{
+	return (seq - ref) <= (1 << 23);
+}
+
 static int drm_queue_vblank_event(struct drm_device *dev, unsigned int pipe,
 				  union drm_wait_vblank *vblwait,
 				  struct drm_file *file_priv)
@@ -1517,7 +1521,7 @@ static int drm_queue_vblank_event(struct drm_device *dev, unsigned int pipe,
 	 * vblank disable, so no need for further locking.  The reference from
 	 * drm_vblank_get() protects against vblank disable from another source.
 	 */
-	if (!vblank->enabled) {
+	if (!READ_ONCE(vblank->enabled)) {
 		ret = -EINVAL;
 		goto err_unlock;
 	}
@@ -1537,7 +1541,7 @@ static int drm_queue_vblank_event(struct drm_device *dev, unsigned int pipe,
 				      vblwait->request.sequence);
 
 	e->event.sequence = vblwait->request.sequence;
-	if ((seq - vblwait->request.sequence) <= (1 << 23)) {
+	if (vblank_passed(seq, vblwait->request.sequence)) {
 		drm_vblank_put(dev, pipe);
 		send_vblank_event(dev, e, seq, &now);
 		vblwait->reply.sequence = seq;
@@ -1559,6 +1563,17 @@ err_put:
 	return ret;
 }
 
+static bool drm_wait_vblank_is_query(union drm_wait_vblank *vblwait)
+{
+	if (vblwait->request.sequence)
+		return false;
+
+	return _DRM_VBLANK_RELATIVE ==
+		(vblwait->request.type & (_DRM_VBLANK_TYPES_MASK |
+					  _DRM_VBLANK_EVENT |
+					  _DRM_VBLANK_NEXTONMISS));
+}
+
 /*
  * Wait for VBLANK.
  *
@@ -1608,6 +1623,21 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
 
 	vblank = &dev->vblank[pipe];
 
+	/* If the counter is currently enabled and accurate, short-circuit
+	 * queries to return the cached timestamp of the last vblank.
+	 */
+	if (dev->vblank_disable_immediate &&
+	    drm_wait_vblank_is_query(vblwait) &&
+	    READ_ONCE(vblank->enabled)) {
+		struct timeval now;
+
+		vblwait->reply.sequence =
+			drm_vblank_count_and_time(dev, pipe, &now);
+		vblwait->reply.tval_sec = now.tv_sec;
+		vblwait->reply.tval_usec = now.tv_usec;
+		return 0;
+	}
+
 	ret = drm_vblank_get(dev, pipe);
 	if (ret) {
 		DRM_DEBUG("crtc %d failed to acquire vblank counter, %d\n", pipe, ret);
@@ -1627,9 +1657,8 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
 	}
 
 	if ((flags & _DRM_VBLANK_NEXTONMISS) &&
-	    (seq - vblwait->request.sequence) <= (1 << 23)) {
+	    vblank_passed(seq, vblwait->request.sequence))
 		vblwait->request.sequence = seq + 1;
-	}
 
 	if (flags & _DRM_VBLANK_EVENT) {
 		/* must hold on to the vblank ref until the event fires
@@ -1642,10 +1671,9 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
 		DRM_DEBUG("waiting on vblank count %u, crtc %u\n",
 			  vblwait->request.sequence, pipe);
 		DRM_WAIT_ON(ret, vblank->queue, 3 * HZ,
-			    (((drm_vblank_count(dev, pipe) -
-			       vblwait->request.sequence) <= (1 << 23)) ||
-			     !vblank->enabled ||
-			     !dev->irq_enabled));
+			    vblank_passed(drm_vblank_count(dev, pipe),
+					  vblwait->request.sequence) ||
+			    !READ_ONCE(vblank->enabled));
 	}
 
 	if (ret != -EINTR) {
@@ -1679,7 +1707,7 @@ static void drm_handle_vblank_events(struct drm_device *dev, unsigned int pipe)
 	list_for_each_entry_safe(e, t, &dev->vblank_event_list, base.link) {
 		if (e->pipe != pipe)
 			continue;
-		if ((seq - e->event.sequence) > (1<<23))
+		if (!vblank_passed(seq, e->event.sequence))
 			continue;
 
 		DRM_DEBUG("vblank event on %u, current %u\n",
@@ -1707,6 +1735,7 @@ bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
 	unsigned long irqflags;
+	bool disable_irq;
 
 	if (WARN_ON_ONCE(!dev->num_crtcs))
 		return false;
@@ -1734,20 +1763,23 @@ bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe)
 	spin_unlock(&dev->vblank_time_lock);
 
 	wake_up(&vblank->queue);
-	drm_handle_vblank_events(dev, pipe);
 
 	/* With instant-off, we defer disabling the interrupt until after
-	 * we finish processing the following vblank. The disable has to
-	 * be last (after drm_handle_vblank_events) so that the timestamp
-	 * is always accurate.
+	 * we finish processing the following vblank after all events have
+	 * been signaled. The disable has to be last (after
+	 * drm_handle_vblank_events) so that the timestamp is always accurate.
 	 */
-	if (dev->vblank_disable_immediate &&
-	    drm_vblank_offdelay > 0 &&
-	    !atomic_read(&vblank->refcount))
-		vblank_disable_fn((unsigned long)vblank);
+	disable_irq = (dev->vblank_disable_immediate &&
+		       drm_vblank_offdelay > 0 &&
+		       !atomic_read(&vblank->refcount));
+
+	drm_handle_vblank_events(dev, pipe);
 
 	spin_unlock_irqrestore(&dev->event_lock, irqflags);
 
+	if (disable_irq)
+		vblank_disable_fn((unsigned long)vblank);
+
 	return true;
 }
 EXPORT_SYMBOL(drm_handle_vblank);

drivers/gpu/drm/drm_modeset_helper.c

@@ -78,7 +78,7 @@ void drm_helper_mode_fill_fb_struct(struct drm_device *dev,
 	int i;
 
 	fb->dev = dev;
-	fb->format = drm_format_info(mode_cmd->pixel_format);
+	fb->format = drm_get_format_info(dev, mode_cmd);
 	fb->width = mode_cmd->width;
 	fb->height = mode_cmd->height;
 	for (i = 0; i < 4; i++) {

drivers/gpu/drm/drm_plane.c

@@ -277,6 +277,12 @@ EXPORT_SYMBOL(drm_plane_from_index);
  *
  * Used when the plane's current framebuffer is destroyed,
  * and when restoring fbdev mode.
+ *
+ * Note that this function is not suitable for atomic drivers, since it doesn't
+ * wire through the lock acquisition context properly and hence can't handle
+ * retries or driver private locks. You probably want to use
+ * drm_atomic_helper_disable_plane() or
+ * drm_atomic_helper_disable_planes_on_crtc() instead.
  */
 void drm_plane_force_disable(struct drm_plane *plane)
 {
@@ -285,8 +291,10 @@ void drm_plane_force_disable(struct drm_plane *plane)
 	if (!plane->fb)
 		return;
 
+	WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));
+
 	plane->old_fb = plane->fb;
-	ret = plane->funcs->disable_plane(plane);
+	ret = plane->funcs->disable_plane(plane, NULL);
 	if (ret) {
 		DRM_ERROR("failed to disable plane with busy fb\n");
 		plane->old_fb = NULL;
@@ -457,14 +465,15 @@ static int __setplane_internal(struct drm_plane *plane,
 			       uint32_t crtc_w, uint32_t crtc_h,
 			       /* src_{x,y,w,h} values are 16.16 fixed point */
 			       uint32_t src_x, uint32_t src_y,
-			       uint32_t src_w, uint32_t src_h)
+			       uint32_t src_w, uint32_t src_h,
+			       struct drm_modeset_acquire_ctx *ctx)
 {
 	int ret = 0;
 
 	/* No fb means shut it down */
 	if (!fb) {
 		plane->old_fb = plane->fb;
-		ret = plane->funcs->disable_plane(plane);
+		ret = plane->funcs->disable_plane(plane, ctx);
 		if (!ret) {
 			plane->crtc = NULL;
 			plane->fb = NULL;
@@ -509,7 +518,7 @@ static int __setplane_internal(struct drm_plane *plane,
 	plane->old_fb = plane->fb;
 	ret = plane->funcs->update_plane(plane, crtc, fb,
 					 crtc_x, crtc_y, crtc_w, crtc_h,
-					 src_x, src_y, src_w, src_h);
+					 src_x, src_y, src_w, src_h, ctx);
 	if (!ret) {
 		plane->crtc = crtc;
 		plane->fb = fb;
@@ -537,13 +546,25 @@ static int setplane_internal(struct drm_plane *plane,
 			     uint32_t src_x, uint32_t src_y,
 			     uint32_t src_w, uint32_t src_h)
 {
+	struct drm_modeset_acquire_ctx ctx;
 	int ret;
 
-	drm_modeset_lock_all(plane->dev);
+	drm_modeset_acquire_init(&ctx, 0);
+retry:
+	ret = drm_modeset_lock_all_ctx(plane->dev, &ctx);
+	if (ret)
+		goto fail;
 	ret = __setplane_internal(plane, crtc, fb,
 				  crtc_x, crtc_y, crtc_w, crtc_h,
-				  src_x, src_y, src_w, src_h);
-	drm_modeset_unlock_all(plane->dev);
+				  src_x, src_y, src_w, src_h, &ctx);
+
+fail:
+	if (ret == -EDEADLK) {
+		drm_modeset_backoff(&ctx);
+		goto retry;
+	}
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
 
 	return ret;
 }
@@ -613,11 +634,21 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
 	int32_t crtc_x, crtc_y;
 	uint32_t crtc_w = 0, crtc_h = 0;
 	uint32_t src_w = 0, src_h = 0;
+	struct drm_modeset_acquire_ctx ctx;
 	int ret = 0;
 
 	BUG_ON(!crtc->cursor);
 	WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
 
+	drm_modeset_acquire_init(&ctx, 0);
+retry:
+	ret = drm_modeset_lock(&crtc->mutex, &ctx);
+	if (ret)
+		goto fail;
+	ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
+	if (ret)
+		goto fail;
+
 	/*
 	 * Obtain fb we'll be using (either new or existing) and take an extra
 	 * reference to it if fb != null.  setplane will take care of dropping
@@ -662,7 +693,7 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
 	 */
 	ret = __setplane_internal(crtc->cursor, crtc, fb,
 				crtc_x, crtc_y, crtc_w, crtc_h,
-				0, 0, src_w, src_h);
+				0, 0, src_w, src_h, &ctx);
 
 	/* Update successful; save new cursor position, if necessary */
 	if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
@@ -670,6 +701,15 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
 		crtc->cursor_y = req->y;
 	}
 
+fail:
+	if (ret == -EDEADLK) {
+		drm_modeset_backoff(&ctx);
+		goto retry;
+	}
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+
 	return ret;
 }
 
@@ -696,12 +736,10 @@ static int drm_mode_cursor_common(struct drm_device *dev,
 	 * If this crtc has a universal cursor plane, call that plane's update
 	 * handler rather than using legacy cursor handlers.
 	 */
-	drm_modeset_lock_crtc(crtc, crtc->cursor);
-	if (crtc->cursor) {
-		ret = drm_mode_cursor_universal(crtc, req, file_priv);
-		goto out;
-	}
+	if (crtc->cursor)
+		return drm_mode_cursor_universal(crtc, req, file_priv);
 
+	drm_modeset_lock_crtc(crtc, crtc->cursor);
 	if (req->flags & DRM_MODE_CURSOR_BO) {
 		if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
 			ret = -ENXIO;
@@ -765,6 +803,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 	struct drm_framebuffer *fb = NULL;
 	struct drm_pending_vblank_event *e = NULL;
 	u32 target_vblank = page_flip->sequence;
+	struct drm_modeset_acquire_ctx ctx;
 	int ret = -EINVAL;
 
 	if (!drm_core_check_feature(dev, DRIVER_MODESET))
@@ -828,7 +867,15 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 		return -EINVAL;
 	}
 
-	drm_modeset_lock_crtc(crtc, crtc->primary);
+	drm_modeset_acquire_init(&ctx, 0);
+retry:
+	ret = drm_modeset_lock(&crtc->mutex, &ctx);
+	if (ret)
+		goto out;
+	ret = drm_modeset_lock(&crtc->primary->mutex, &ctx);
+	if (ret)
+		goto out;
+
 	if (crtc->primary->fb == NULL) {
 		/* The framebuffer is currently unbound, presumably
 		 * due to a hotplug event, that userspace has not
@@ -876,6 +923,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 		ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
 		if (ret) {
 			kfree(e);
+			e = NULL;
 			goto out;
 		}
 	}
@@ -884,9 +932,11 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 	if (crtc->funcs->page_flip_target)
 		ret = crtc->funcs->page_flip_target(crtc, fb, e,
 						    page_flip->flags,
-						    target_vblank);
+						    target_vblank,
+						    &ctx);
 	else
-		ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
+		ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags,
+					     &ctx);
 	if (ret) {
 		if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
 			drm_event_cancel_free(dev, &e->base);
@@ -906,7 +956,14 @@ out:
 	if (crtc->primary->old_fb)
 		drm_framebuffer_put(crtc->primary->old_fb);
 	crtc->primary->old_fb = NULL;
-	drm_modeset_unlock_crtc(crtc);
+
+	if (ret == -EDEADLK) {
+		drm_modeset_backoff(&ctx);
+		goto retry;
+	}
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
 
 	return ret;
 }

drivers/gpu/drm/drm_plane_helper.c

@@ -275,6 +275,7 @@ EXPORT_SYMBOL(drm_plane_helper_check_update);
  * @src_y: y offset of @fb for panning
  * @src_w: width of source rectangle in @fb
  * @src_h: height of source rectangle in @fb
+ * @ctx: lock acquire context, not used here
  *
  * Provides a default plane update handler for primary planes.  This is handler
  * is called in response to a userspace SetPlane operation on the plane with a
@@ -303,7 +304,8 @@ int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
 			      int crtc_x, int crtc_y,
 			      unsigned int crtc_w, unsigned int crtc_h,
 			      uint32_t src_x, uint32_t src_y,
-			      uint32_t src_w, uint32_t src_h)
+			      uint32_t src_w, uint32_t src_h,
+			      struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_mode_set set = {
 		.crtc = crtc,
@@ -347,7 +349,7 @@ int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
 		 * provides their own disable function, this will just
 		 * wind up returning -EINVAL to userspace.
 		 */
-		return plane->funcs->disable_plane(plane);
+		return plane->funcs->disable_plane(plane, ctx);
 
 	/* Find current connectors for CRTC */
 	num_connectors = get_connectors_for_crtc(crtc, NULL, 0);
@@ -369,7 +371,7 @@ int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
 	 * drm_mode_setplane() already handles the basic refcounting for the
 	 * framebuffers involved in this operation.
 	 */
-	ret = crtc->funcs->set_config(&set);
+	ret = crtc->funcs->set_config(&set, ctx);
 
 	kfree(connector_list);
 	return ret;
@@ -396,7 +398,8 @@ EXPORT_SYMBOL(drm_primary_helper_update);
  * RETURNS:
  * Unconditionally returns -EINVAL.
  */
-int drm_primary_helper_disable(struct drm_plane *plane)
+int drm_primary_helper_disable(struct drm_plane *plane,
+			       struct drm_modeset_acquire_ctx *ctx)
 {
 	return -EINVAL;
 }

drivers/gpu/drm/drm_simple_kms_helper.c

@@ -114,7 +114,7 @@ static int drm_simple_kms_plane_atomic_check(struct drm_plane *plane,
 }
 
 static void drm_simple_kms_plane_atomic_update(struct drm_plane *plane,
-					struct drm_plane_state *pstate)
+					struct drm_plane_state *old_pstate)
 {
 	struct drm_simple_display_pipe *pipe;
 
@@ -122,7 +122,7 @@ static void drm_simple_kms_plane_atomic_update(struct drm_plane *plane,
 	if (!pipe->funcs || !pipe->funcs->update)
 		return;
 
-	pipe->funcs->update(pipe, pstate);
+	pipe->funcs->update(pipe, old_pstate);
 }
 
 static int drm_simple_kms_plane_prepare_fb(struct drm_plane *plane,

drivers/gpu/drm/gma500/gma_display.c

@@ -514,17 +514,18 @@ void gma_crtc_destroy(struct drm_crtc *crtc)
 	kfree(gma_crtc);
 }
 
-int gma_crtc_set_config(struct drm_mode_set *set)
+int gma_crtc_set_config(struct drm_mode_set *set,
+			struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev = set->crtc->dev;
 	struct drm_psb_private *dev_priv = dev->dev_private;
 	int ret;
 
 	if (!dev_priv->rpm_enabled)
-		return drm_crtc_helper_set_config(set);
+		return drm_crtc_helper_set_config(set, ctx);
 
 	pm_runtime_forbid(&dev->pdev->dev);
-	ret = drm_crtc_helper_set_config(set);
+	ret = drm_crtc_helper_set_config(set, ctx);
 	pm_runtime_allow(&dev->pdev->dev);
 
 	return ret;

drivers/gpu/drm/gma500/gma_display.h

@@ -79,7 +79,8 @@ extern void gma_crtc_prepare(struct drm_crtc *crtc);
 extern void gma_crtc_commit(struct drm_crtc *crtc);
 extern void gma_crtc_disable(struct drm_crtc *crtc);
 extern void gma_crtc_destroy(struct drm_crtc *crtc);
-extern int gma_crtc_set_config(struct drm_mode_set *set);
+extern int gma_crtc_set_config(struct drm_mode_set *set,
+			       struct drm_modeset_acquire_ctx *ctx);
 
 extern void gma_crtc_save(struct drm_crtc *crtc);
 extern void gma_crtc_restore(struct drm_crtc *crtc);

drivers/gpu/drm/i915/i915_drv.c

@@ -1307,8 +1307,6 @@ void i915_driver_unload(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct pci_dev *pdev = dev_priv->drm.pdev;
-	struct drm_modeset_acquire_ctx ctx;
-	int ret;
 
 	intel_fbdev_fini(dev);
 
@@ -1317,23 +1315,7 @@ void i915_driver_unload(struct drm_device *dev)
 
 	intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
 
-	drm_modeset_acquire_init(&ctx, 0);
-	while (1) {
-		ret = drm_modeset_lock_all_ctx(dev, &ctx);
-		if (!ret)
-			ret = drm_atomic_helper_disable_all(dev, &ctx);
-
-		if (ret != -EDEADLK)
-			break;
-
-		drm_modeset_backoff(&ctx);
-	}
-
-	if (ret)
-		DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret);
-
-	drm_modeset_drop_locks(&ctx);
-	drm_modeset_acquire_fini(&ctx);
+	drm_atomic_helper_shutdown(dev);
 
 	intel_gvt_cleanup(dev_priv);
 

drivers/gpu/drm/i915/intel_display.c

@@ -13426,7 +13426,8 @@ intel_legacy_cursor_update(struct drm_plane *plane,
 			   int crtc_x, int crtc_y,
 			   unsigned int crtc_w, unsigned int crtc_h,
 			   uint32_t src_x, uint32_t src_y,
-			   uint32_t src_w, uint32_t src_h)
+			   uint32_t src_w, uint32_t src_h,
+			   struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc->dev);
 	int ret;
@@ -13539,7 +13540,7 @@ out_free:
 slow:
 	return drm_atomic_helper_update_plane(plane, crtc, fb,
 					      crtc_x, crtc_y, crtc_w, crtc_h,
-					      src_x, src_y, src_w, src_h);
+					      src_x, src_y, src_w, src_h, ctx);
 }
 
 static const struct drm_plane_funcs intel_cursor_plane_funcs = {

drivers/gpu/drm/i915/intel_dp_mst.c

@@ -149,7 +149,6 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
 		to_intel_connector(conn_state->connector);
 	int ret;
 	uint32_t temp;
-	int slots;
 
 	/* MST encoders are bound to a crtc, not to a connector,
 	 * force the mapping here for get_hw_state.
@@ -165,7 +164,8 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
 
 	ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr,
 				       connector->port,
-				       pipe_config->pbn, &slots);
+				       pipe_config->pbn,
+				       pipe_config->dp_m_n.tu);
 	if (ret == false) {
 		DRM_ERROR("failed to allocate vcpi\n");
 		return;

drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c

@@ -37,7 +37,8 @@ static int mdp5_update_cursor_plane_legacy(struct drm_plane *plane,
 		int crtc_x, int crtc_y,
 		unsigned int crtc_w, unsigned int crtc_h,
 		uint32_t src_x, uint32_t src_y,
-		uint32_t src_w, uint32_t src_h);
+		uint32_t src_w, uint32_t src_h,
+		struct drm_modeset_acquire_ctx *ctx);
 
 static void set_scanout_locked(struct drm_plane *plane,
 		struct drm_framebuffer *fb);
@@ -886,7 +887,8 @@ static int mdp5_update_cursor_plane_legacy(struct drm_plane *plane,
 			int crtc_x, int crtc_y,
 			unsigned int crtc_w, unsigned int crtc_h,
 			uint32_t src_x, uint32_t src_y,
-			uint32_t src_w, uint32_t src_h)
+			uint32_t src_w, uint32_t src_h,
+			struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_plane_state *plane_state, *new_plane_state;
 	struct mdp5_plane_state *mdp5_pstate;
@@ -954,7 +956,7 @@ slow_free:
 slow:
 	return drm_atomic_helper_update_plane(plane, crtc, fb,
 					      crtc_x, crtc_y, crtc_w, crtc_h,
-					      src_x, src_y, src_w, src_h);
+					      src_x, src_y, src_w, src_h, ctx);
 }
 
 enum mdp5_pipe mdp5_plane_pipe(struct drm_plane *plane)

drivers/gpu/drm/nouveau/dispnv04/crtc.c

@@ -1031,8 +1031,9 @@ nv04_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 	return 0;
 }
 
-int
-nouveau_crtc_set_config(struct drm_mode_set *set)
+static int
+nouveau_crtc_set_config(struct drm_mode_set *set,
+			struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev;
 	struct nouveau_drm *drm;
@@ -1049,7 +1050,7 @@ nouveau_crtc_set_config(struct drm_mode_set *set)
 	if (ret < 0 && ret != -EACCES)
 		return ret;
 
-	ret = drm_crtc_helper_set_config(set);
+	ret = drm_crtc_helper_set_config(set, ctx);
 
 	drm = nouveau_drm(dev);
 

drivers/gpu/drm/nouveau/dispnv04/overlay.c

@@ -94,7 +94,8 @@ nv10_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 		  struct drm_framebuffer *fb, int crtc_x, int crtc_y,
 		  unsigned int crtc_w, unsigned int crtc_h,
 		  uint32_t src_x, uint32_t src_y,
-		  uint32_t src_w, uint32_t src_h)
+		  uint32_t src_w, uint32_t src_h,
+		  struct drm_modeset_acquire_ctx *ctx)
 {
 	struct nouveau_drm *drm = nouveau_drm(plane->dev);
 	struct nvif_object *dev = &drm->client.device.object;
@@ -172,7 +173,8 @@ nv10_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 }
 
 static int
-nv10_disable_plane(struct drm_plane *plane)
+nv10_disable_plane(struct drm_plane *plane,
+		   struct drm_modeset_acquire_ctx *ctx)
 {
 	struct nvif_object *dev = &nouveau_drm(plane->dev)->client.device.object;
 	struct nouveau_plane *nv_plane =
@@ -190,7 +192,7 @@ nv10_disable_plane(struct drm_plane *plane)
 static void
 nv_destroy_plane(struct drm_plane *plane)
 {
-	plane->funcs->disable_plane(plane);
+	drm_plane_force_disable(plane);
 	drm_plane_cleanup(plane);
 	kfree(plane);
 }
@@ -331,7 +333,7 @@ nv10_overlay_init(struct drm_device *device)
 
 	plane->set_params = nv10_set_params;
 	nv10_set_params(plane);
-	nv10_disable_plane(&plane->base);
+	drm_plane_force_disable(&plane->base);
 	return;
 cleanup:
 	drm_plane_cleanup(&plane->base);
@@ -345,7 +347,8 @@ nv04_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 		  struct drm_framebuffer *fb, int crtc_x, int crtc_y,
 		  unsigned int crtc_w, unsigned int crtc_h,
 		  uint32_t src_x, uint32_t src_y,
-		  uint32_t src_w, uint32_t src_h)
+		  uint32_t src_w, uint32_t src_h,
+		  struct drm_modeset_acquire_ctx *ctx)
 {
 	struct nvif_object *dev = &nouveau_drm(plane->dev)->client.device.object;
 	struct nouveau_plane *nv_plane =
@@ -425,7 +428,8 @@ nv04_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 }
 
 static int
-nv04_disable_plane(struct drm_plane *plane)
+nv04_disable_plane(struct drm_plane *plane,
+		   struct drm_modeset_acquire_ctx *ctx)
 {
 	struct nvif_object *dev = &nouveau_drm(plane->dev)->client.device.object;
 	struct nouveau_plane *nv_plane =
@@ -483,7 +487,7 @@ nv04_overlay_init(struct drm_device *device)
 	drm_object_attach_property(&plane->base.base,
 				   plane->props.brightness, plane->brightness);
 
-	nv04_disable_plane(&plane->base);
+	drm_plane_force_disable(&plane->base);
 	return;
 cleanup:
 	drm_plane_cleanup(&plane->base);

drivers/gpu/drm/nouveau/nouveau_display.c

@@ -436,8 +436,12 @@ nouveau_display_fini(struct drm_device *dev, bool suspend)
 	struct drm_connector *connector;
 	struct drm_crtc *crtc;
 
-	if (!suspend)
-		drm_crtc_force_disable_all(dev);
+	if (!suspend) {
+		if (drm_drv_uses_atomic_modeset(dev))
+			drm_atomic_helper_shutdown(dev);
+		else
+			drm_crtc_force_disable_all(dev);
+	}
 
 	/* Make sure that drm and hw vblank irqs get properly disabled. */
 	drm_for_each_crtc(crtc, dev)
@@ -788,7 +792,8 @@ fail:
 
 int
 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
-		       struct drm_pending_vblank_event *event, u32 flags)
+		       struct drm_pending_vblank_event *event, u32 flags,
+		       struct drm_modeset_acquire_ctx *ctx)
 {
 	const int swap_interval = (flags & DRM_MODE_PAGE_FLIP_ASYNC) ? 0 : 1;
 	struct drm_device *dev = crtc->dev;

drivers/gpu/drm/nouveau/nouveau_display.h

@@ -76,7 +76,8 @@ int  nouveau_display_vblstamp(struct drm_device *, unsigned int, int *,
 
 int  nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 			    struct drm_pending_vblank_event *event,
-			    uint32_t page_flip_flags);
+			    uint32_t page_flip_flags,
+			    struct drm_modeset_acquire_ctx *ctx);
 int  nouveau_finish_page_flip(struct nouveau_channel *,
 			      struct nouveau_page_flip_state *);
 
@@ -87,7 +88,6 @@ int  nouveau_display_dumb_map_offset(struct drm_file *, struct drm_device *,
 
 void nouveau_hdmi_mode_set(struct drm_encoder *, struct drm_display_mode *);
 
-int nouveau_crtc_set_config(struct drm_mode_set *set);
 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
 extern int nouveau_backlight_init(struct drm_device *);
 extern void nouveau_backlight_exit(struct drm_device *);

drivers/gpu/drm/nouveau/nouveau_vga.c

@@ -95,6 +95,10 @@ nouveau_vga_init(struct nouveau_drm *drm)
 
 	vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
 
+	/* don't register Thunderbolt eGPU with vga_switcheroo */
+	if (pci_is_thunderbolt_attached(dev->pdev))
+		return;
+
 	if (nouveau_runtime_pm == 1)
 		runtime = true;
 	if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_is_v1_dsm()))
@@ -111,6 +115,11 @@ nouveau_vga_fini(struct nouveau_drm *drm)
 	struct drm_device *dev = drm->dev;
 	bool runtime = false;
 
+	vga_client_register(dev->pdev, NULL, NULL, NULL);
+
+	if (pci_is_thunderbolt_attached(dev->pdev))
+		return;
+
 	if (nouveau_runtime_pm == 1)
 		runtime = true;
 	if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_is_v1_dsm()))
@@ -119,7 +128,6 @@ nouveau_vga_fini(struct nouveau_drm *drm)
 	vga_switcheroo_unregister_client(dev->pdev);
 	if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus())
 		vga_switcheroo_fini_domain_pm_ops(drm->dev->dev);
-	vga_client_register(dev->pdev, NULL, NULL, NULL);
 }
 
 

drivers/gpu/drm/nouveau/nv50_display.c

@@ -2895,7 +2895,8 @@ nv50_msto_enable(struct drm_encoder *encoder)
 	if (WARN_ON(!mstc))
 		return;
 
-	r = drm_dp_mst_allocate_vcpi(&mstm->mgr, mstc->port, mstc->pbn, &slots);
+	slots = drm_dp_find_vcpi_slots(&mstm->mgr, mstc->pbn);
+	r = drm_dp_mst_allocate_vcpi(&mstm->mgr, mstc->port, mstc->pbn, slots);
 	WARN_ON(!r);
 
 	if (mstm->outp->dcb->sorconf.link & 1)

drivers/gpu/drm/radeon/radeon_device.c

@@ -1468,7 +1468,9 @@ int radeon_device_init(struct radeon_device *rdev,
 
 	if (rdev->flags & RADEON_IS_PX)
 		runtime = true;
-	vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops, runtime);
+	if (!pci_is_thunderbolt_attached(rdev->pdev))
+		vga_switcheroo_register_client(rdev->pdev,
+					       &radeon_switcheroo_ops, runtime);
 	if (runtime)
 		vga_switcheroo_init_domain_pm_ops(rdev->dev, &rdev->vga_pm_domain);
 
@@ -1561,7 +1563,8 @@ void radeon_device_fini(struct radeon_device *rdev)
 	/* evict vram memory */
 	radeon_bo_evict_vram(rdev);
 	radeon_fini(rdev);
-	vga_switcheroo_unregister_client(rdev->pdev);
+	if (!pci_is_thunderbolt_attached(rdev->pdev))
+		vga_switcheroo_unregister_client(rdev->pdev);
 	if (rdev->flags & RADEON_IS_PX)
 		vga_switcheroo_fini_domain_pm_ops(rdev->dev);
 	vga_client_register(rdev->pdev, NULL, NULL, NULL);

drivers/gpu/drm/radeon/radeon_display.c

@@ -485,7 +485,8 @@ static int radeon_crtc_page_flip_target(struct drm_crtc *crtc,
 					struct drm_framebuffer *fb,
 					struct drm_pending_vblank_event *event,
 					uint32_t page_flip_flags,
-					uint32_t target)
+					uint32_t target,
+					struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev = crtc->dev;
 	struct radeon_device *rdev = dev->dev_private;
@@ -623,7 +624,8 @@ cleanup:
 }
 
 static int
-radeon_crtc_set_config(struct drm_mode_set *set)
+radeon_crtc_set_config(struct drm_mode_set *set,
+		       struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev;
 	struct radeon_device *rdev;
@@ -640,7 +642,7 @@ radeon_crtc_set_config(struct drm_mode_set *set)
 	if (ret < 0)
 		return ret;
 
-	ret = drm_crtc_helper_set_config(set);
+	ret = drm_crtc_helper_set_config(set, ctx);
 
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 		if (crtc->enabled)

drivers/gpu/drm/radeon/radeon_dp_mst.c

@@ -453,9 +453,11 @@ radeon_mst_encoder_dpms(struct drm_encoder *encoder, int mode)
 		DRM_DEBUG_KMS("dig encoder is %d %d %d\n", dig_enc->dig_encoder,
 			      dig_enc->linkb, radeon_crtc->crtc_id);
 
+		slots = drm_dp_find_vcpi_slots(&radeon_connector->mst_port->mst_mgr,
+					       mst_enc->pbn);
 		ret = drm_dp_mst_allocate_vcpi(&radeon_connector->mst_port->mst_mgr,
 					       radeon_connector->port,
-					       mst_enc->pbn, &slots);
+					       mst_enc->pbn, slots);
 		ret = drm_dp_update_payload_part1(&radeon_connector->mst_port->mst_mgr);
 
 		radeon_dp_mst_set_be_cntl(primary, mst_enc,

drivers/gpu/drm/radeon/radeon_kms.c

@@ -115,7 +115,8 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
 
 	if ((radeon_runtime_pm != 0) &&
 	    radeon_has_atpx() &&
-	    ((flags & RADEON_IS_IGP) == 0))
+	    ((flags & RADEON_IS_IGP) == 0) &&
+	    !pci_is_thunderbolt_attached(rdev->pdev))
 		flags |= RADEON_IS_PX;
 
 	/* radeon_device_init should report only fatal error

drivers/gpu/drm/rockchip/Kconfig

@@ -13,7 +13,7 @@ config DRM_ROCKCHIP
 	  IP found on the SoC.
 
 config ROCKCHIP_ANALOGIX_DP
-	tristate "Rockchip specific extensions for Analogix DP driver"
+	bool "Rockchip specific extensions for Analogix DP driver"
 	depends on DRM_ROCKCHIP
 	select DRM_ANALOGIX_DP
 	help
@@ -22,7 +22,7 @@ config ROCKCHIP_ANALOGIX_DP
 	  on RK3288 based SoC, you should selet this option.
 
 config ROCKCHIP_CDN_DP
-        tristate "Rockchip cdn DP"
+        bool "Rockchip cdn DP"
         depends on DRM_ROCKCHIP
 	depends on EXTCON
 	select SND_SOC_HDMI_CODEC if SND_SOC
@@ -33,7 +33,7 @@ config ROCKCHIP_CDN_DP
 	  option.
 
 config ROCKCHIP_DW_HDMI
-        tristate "Rockchip specific extensions for Synopsys DW HDMI"
+        bool "Rockchip specific extensions for Synopsys DW HDMI"
         depends on DRM_ROCKCHIP
         select DRM_DW_HDMI
         help
@@ -43,7 +43,7 @@ config ROCKCHIP_DW_HDMI
 	  option.
 
 config ROCKCHIP_DW_MIPI_DSI
-	tristate "Rockchip specific extensions for Synopsys DW MIPI DSI"
+	bool "Rockchip specific extensions for Synopsys DW MIPI DSI"
 	depends on DRM_ROCKCHIP
 	select DRM_MIPI_DSI
 	help
@@ -53,7 +53,7 @@ config ROCKCHIP_DW_MIPI_DSI
 	 option.
 
 config ROCKCHIP_INNO_HDMI
-	tristate "Rockchip specific extensions for Innosilicon HDMI"
+	bool "Rockchip specific extensions for Innosilicon HDMI"
 	depends on DRM_ROCKCHIP
 	help
 	  This selects support for Rockchip SoC specific extensions

drivers/gpu/drm/rockchip/Makefile

@@ -3,14 +3,14 @@
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
 rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o \
-		rockchip_drm_gem.o rockchip_drm_psr.o rockchip_drm_vop.o
+		rockchip_drm_gem.o rockchip_drm_psr.o \
+		rockchip_drm_vop.o rockchip_vop_reg.o
 rockchipdrm-$(CONFIG_DRM_FBDEV_EMULATION) += rockchip_drm_fbdev.o
 
-obj-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o
-obj-$(CONFIG_ROCKCHIP_CDN_DP) += cdn-dp.o
-cdn-dp-objs := cdn-dp-core.o cdn-dp-reg.o
-obj-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o
-obj-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi.o
-obj-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o
+rockchipdrm-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o
+rockchipdrm-$(CONFIG_ROCKCHIP_CDN_DP) += cdn-dp-core.o cdn-dp-reg.o
+rockchipdrm-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o
+rockchipdrm-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi.o
+rockchipdrm-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o
 
-obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o rockchip_vop_reg.o
+obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o

drivers/gpu/drm/rockchip/analogix_dp-rockchip.c

@@ -507,7 +507,7 @@ static const struct of_device_id rockchip_dp_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, rockchip_dp_dt_ids);
 
-static struct platform_driver rockchip_dp_driver = {
+struct platform_driver rockchip_dp_driver = {
 	.probe = rockchip_dp_probe,
 	.remove = rockchip_dp_remove,
 	.driver = {
@@ -516,10 +516,3 @@ static struct platform_driver rockchip_dp_driver = {
 		   .of_match_table = of_match_ptr(rockchip_dp_dt_ids),
 	},
 };
-
-module_platform_driver(rockchip_dp_driver);
-
-MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
-MODULE_AUTHOR("Jeff chen <jeff.chen@rock-chips.com>");
-MODULE_DESCRIPTION("Rockchip Specific Analogix-DP Driver Extension");
-MODULE_LICENSE("GPL v2");

drivers/gpu/drm/rockchip/cdn-dp-core.c

@@ -1244,7 +1244,7 @@ static const struct dev_pm_ops cdn_dp_pm_ops = {
 				cdn_dp_resume)
 };
 
-static struct platform_driver cdn_dp_driver = {
+struct platform_driver cdn_dp_driver = {
 	.probe = cdn_dp_probe,
 	.remove = cdn_dp_remove,
 	.shutdown = cdn_dp_shutdown,
@@ -1255,9 +1255,3 @@ static struct platform_driver cdn_dp_driver = {
 		   .pm = &cdn_dp_pm_ops,
 	},
 };
-
-module_platform_driver(cdn_dp_driver);
-
-MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
-MODULE_DESCRIPTION("cdn DP Driver");
-MODULE_LICENSE("GPL v2");

drivers/gpu/drm/rockchip/dw-mipi-dsi.c

@@ -34,7 +34,7 @@
 #define RK3288_DSI0_SEL_VOP_LIT		BIT(6)
 #define RK3288_DSI1_SEL_VOP_LIT		BIT(9)
 
-#define RK3399_GRF_SOC_CON19		0x6250
+#define RK3399_GRF_SOC_CON20		0x6250
 #define RK3399_DSI0_SEL_VOP_LIT		BIT(0)
 #define RK3399_DSI1_SEL_VOP_LIT		BIT(4)
 
@@ -251,6 +251,9 @@
 #define THS_PRE_PROGRAM_EN	BIT(7)
 #define THS_ZERO_PROGRAM_EN	BIT(6)
 
+#define DW_MIPI_NEEDS_PHY_CFG_CLK	BIT(0)
+#define DW_MIPI_NEEDS_GRF_CLK		BIT(1)
+
 enum {
 	BANDGAP_97_07,
 	BANDGAP_98_05,
@@ -279,6 +282,7 @@ struct dw_mipi_dsi_plat_data {
 	u32 grf_switch_reg;
 	u32 grf_dsi0_mode;
 	u32 grf_dsi0_mode_reg;
+	unsigned int flags;
 	unsigned int max_data_lanes;
 };
 
@@ -291,6 +295,7 @@ struct dw_mipi_dsi {
 	struct regmap *grf_regmap;
 	void __iomem *base;
 
+	struct clk *grf_clk;
 	struct clk *pllref_clk;
 	struct clk *pclk;
 	struct clk *phy_cfg_clk;
@@ -979,6 +984,17 @@ static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder)
 	dw_mipi_dsi_dphy_interface_config(dsi);
 	dw_mipi_dsi_clear_err(dsi);
 
+	/*
+	 * For the RK3399, the clk of grf must be enabled before writing grf
+	 * register. And for RK3288 or other soc, this grf_clk must be NULL,
+	 * the clk_prepare_enable return true directly.
+	 */
+	ret = clk_prepare_enable(dsi->grf_clk);
+	if (ret) {
+		dev_err(dsi->dev, "Failed to enable grf_clk: %d\n", ret);
+		return;
+	}
+
 	if (pdata->grf_dsi0_mode_reg)
 		regmap_write(dsi->grf_regmap, pdata->grf_dsi0_mode_reg,
 			     pdata->grf_dsi0_mode);
@@ -1003,6 +1019,8 @@ static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder)
 	regmap_write(dsi->grf_regmap, pdata->grf_switch_reg, val);
 	dev_dbg(dsi->dev, "vop %s output to dsi0\n", (mux) ? "LIT" : "BIG");
 	dsi->dpms_mode = DRM_MODE_DPMS_ON;
+
+	clk_disable_unprepare(dsi->grf_clk);
 }
 
 static int
@@ -1133,9 +1151,10 @@ static struct dw_mipi_dsi_plat_data rk3288_mipi_dsi_drv_data = {
 static struct dw_mipi_dsi_plat_data rk3399_mipi_dsi_drv_data = {
 	.dsi0_en_bit = RK3399_DSI0_SEL_VOP_LIT,
 	.dsi1_en_bit = RK3399_DSI1_SEL_VOP_LIT,
-	.grf_switch_reg = RK3399_GRF_SOC_CON19,
+	.grf_switch_reg = RK3399_GRF_SOC_CON20,
 	.grf_dsi0_mode = RK3399_GRF_DSI_MODE,
 	.grf_dsi0_mode_reg = RK3399_GRF_SOC_CON22,
+	.flags = DW_MIPI_NEEDS_PHY_CFG_CLK | DW_MIPI_NEEDS_GRF_CLK,
 	.max_data_lanes = 4,
 };
 
@@ -1227,15 +1246,22 @@ static int dw_mipi_dsi_bind(struct device *dev, struct device *master,
 		clk_disable_unprepare(dsi->pclk);
 	}
 
-	dsi->phy_cfg_clk = devm_clk_get(dev, "phy_cfg");
-	if (IS_ERR(dsi->phy_cfg_clk)) {
-		ret = PTR_ERR(dsi->phy_cfg_clk);
-		if (ret != -ENOENT) {
+	if (pdata->flags & DW_MIPI_NEEDS_PHY_CFG_CLK) {
+		dsi->phy_cfg_clk = devm_clk_get(dev, "phy_cfg");
+		if (IS_ERR(dsi->phy_cfg_clk)) {
+			ret = PTR_ERR(dsi->phy_cfg_clk);
 			dev_err(dev, "Unable to get phy_cfg_clk: %d\n", ret);
 			return ret;
 		}
-		dsi->phy_cfg_clk = NULL;
-		dev_dbg(dev, "have not phy_cfg_clk\n");
+	}
+
+	if (pdata->flags & DW_MIPI_NEEDS_GRF_CLK) {
+		dsi->grf_clk = devm_clk_get(dev, "grf");
+		if (IS_ERR(dsi->grf_clk)) {
+			ret = PTR_ERR(dsi->grf_clk);
+			dev_err(dev, "Unable to get grf_clk: %d\n", ret);
+			return ret;
+		}
 	}
 
 	ret = clk_prepare_enable(dsi->pllref_clk);
@@ -1304,7 +1330,7 @@ static int dw_mipi_dsi_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct platform_driver dw_mipi_dsi_driver = {
+struct platform_driver dw_mipi_dsi_driver = {
 	.probe		= dw_mipi_dsi_probe,
 	.remove		= dw_mipi_dsi_remove,
 	.driver		= {
@@ -1312,9 +1338,3 @@ static struct platform_driver dw_mipi_dsi_driver = {
 		.name	= DRIVER_NAME,
 	},
 };
-module_platform_driver(dw_mipi_dsi_driver);
-
-MODULE_DESCRIPTION("ROCKCHIP MIPI DSI host controller driver");
-MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" DRIVER_NAME);

drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c

@@ -325,7 +325,7 @@ static int dw_hdmi_rockchip_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct platform_driver dw_hdmi_rockchip_pltfm_driver = {
+struct platform_driver dw_hdmi_rockchip_pltfm_driver = {
 	.probe  = dw_hdmi_rockchip_probe,
 	.remove = dw_hdmi_rockchip_remove,
 	.driver = {
@@ -333,11 +333,3 @@ static struct platform_driver dw_hdmi_rockchip_pltfm_driver = {
 		.of_match_table = dw_hdmi_rockchip_dt_ids,
 	},
 };
-
-module_platform_driver(dw_hdmi_rockchip_pltfm_driver);
-
-MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>");
-MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
-MODULE_DESCRIPTION("Rockchip Specific DW-HDMI Driver Extension");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:dwhdmi-rockchip");

drivers/gpu/drm/rockchip/inno_hdmi.c

@@ -923,7 +923,7 @@ static const struct of_device_id inno_hdmi_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, inno_hdmi_dt_ids);
 
-static struct platform_driver inno_hdmi_driver = {
+struct platform_driver inno_hdmi_driver = {
 	.probe  = inno_hdmi_probe,
 	.remove = inno_hdmi_remove,
 	.driver = {
@@ -931,11 +931,3 @@ static struct platform_driver inno_hdmi_driver = {
 		.of_match_table = inno_hdmi_dt_ids,
 	},
 };
-
-module_platform_driver(inno_hdmi_driver);
-
-MODULE_AUTHOR("Zheng Yang <zhengyang@rock-chips.com>");
-MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
-MODULE_DESCRIPTION("Rockchip Specific INNO-HDMI Driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:innohdmi-rockchip");

drivers/gpu/drm/rockchip/rockchip_drm_drv.c

@@ -304,34 +304,37 @@ static const struct dev_pm_ops rockchip_drm_pm_ops = {
 				rockchip_drm_sys_resume)
 };
 
-static int compare_of(struct device *dev, void *data)
-{
-	struct device_node *np = data;
+#define MAX_ROCKCHIP_SUB_DRIVERS 16
+static struct platform_driver *rockchip_sub_drivers[MAX_ROCKCHIP_SUB_DRIVERS];
+static int num_rockchip_sub_drivers;
 
-	return dev->of_node == np;
+static int compare_dev(struct device *dev, void *data)
+{
+	return dev == (struct device *)data;
 }
 
-static void rockchip_add_endpoints(struct device *dev,
-				   struct component_match **match,
-				   struct device_node *port)
+static struct component_match *rockchip_drm_match_add(struct device *dev)
 {
-	struct device_node *ep, *remote;
+	struct component_match *match = NULL;
+	int i;
 
-	for_each_child_of_node(port, ep) {
-		remote = of_graph_get_remote_port_parent(ep);
-		if (!remote || !of_device_is_available(remote)) {
-			of_node_put(remote);
-			continue;
-		} else if (!of_device_is_available(remote->parent)) {
-			dev_warn(dev, "parent device of %s is not available\n",
-				 remote->full_name);
-			of_node_put(remote);
-			continue;
-		}
+	for (i = 0; i < num_rockchip_sub_drivers; i++) {
+		struct platform_driver *drv = rockchip_sub_drivers[i];
+		struct device *p = NULL, *d;
+
+		do {
+			d = bus_find_device(&platform_bus_type, p, &drv->driver,
+					    (void *)platform_bus_type.match);
+			put_device(p);
+			p = d;
 
-		drm_of_component_match_add(dev, match, compare_of, remote);
-		of_node_put(remote);
+			if (!d)
+				break;
+			component_match_add(dev, &match, compare_dev, d);
+		} while (true);
 	}
+
+	return match ?: ERR_PTR(-ENODEV);
 }
 
 static const struct component_master_ops rockchip_drm_ops = {
@@ -339,21 +342,16 @@ static const struct component_master_ops rockchip_drm_ops = {
 	.unbind = rockchip_drm_unbind,
 };
 
-static int rockchip_drm_platform_probe(struct platform_device *pdev)
+static int rockchip_drm_platform_of_probe(struct device *dev)
 {
-	struct device *dev = &pdev->dev;
-	struct component_match *match = NULL;
 	struct device_node *np = dev->of_node;
 	struct device_node *port;
+	bool found = false;
 	int i;
 
 	if (!np)
 		return -ENODEV;
-	/*
-	 * Bind the crtc ports first, so that
-	 * drm_of_find_possible_crtcs called from encoder .bind callbacks
-	 * works as expected.
-	 */
+
 	for (i = 0;; i++) {
 		struct device_node *iommu;
 
@@ -377,9 +375,9 @@ static int rockchip_drm_platform_probe(struct platform_device *pdev)
 			is_support_iommu = false;
 		}
 
+		found = true;
+
 		of_node_put(iommu);
-		drm_of_component_match_add(dev, &match, compare_of,
-					   port->parent);
 		of_node_put(port);
 	}
 
@@ -388,27 +386,27 @@ static int rockchip_drm_platform_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	if (!match) {
+	if (!found) {
 		dev_err(dev, "No available vop found for display-subsystem.\n");
 		return -ENODEV;
 	}
-	/*
-	 * For each bound crtc, bind the encoders attached to its
-	 * remote endpoint.
-	 */
-	for (i = 0;; i++) {
-		port = of_parse_phandle(np, "ports", i);
-		if (!port)
-			break;
 
-		if (!of_device_is_available(port->parent)) {
-			of_node_put(port);
-			continue;
-		}
+	return 0;
+}
 
-		rockchip_add_endpoints(dev, &match, port);
-		of_node_put(port);
-	}
+static int rockchip_drm_platform_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct component_match *match = NULL;
+	int ret;
+
+	ret = rockchip_drm_platform_of_probe(dev);
+	if (ret)
+		return ret;
+
+	match = rockchip_drm_match_add(dev);
+	if (IS_ERR(match))
+		return PTR_ERR(match);
 
 	return component_master_add_with_match(dev, &rockchip_drm_ops, match);
 }
@@ -436,7 +434,54 @@ static struct platform_driver rockchip_drm_platform_driver = {
 	},
 };
 
-module_platform_driver(rockchip_drm_platform_driver);
+#define ADD_ROCKCHIP_SUB_DRIVER(drv, cond) { \
+	if (IS_ENABLED(cond) && \
+	    !WARN_ON(num_rockchip_sub_drivers >= MAX_ROCKCHIP_SUB_DRIVERS)) \
+		rockchip_sub_drivers[num_rockchip_sub_drivers++] = &drv; \
+}
+
+static int __init rockchip_drm_init(void)
+{
+	int ret;
+
+	num_rockchip_sub_drivers = 0;
+	ADD_ROCKCHIP_SUB_DRIVER(vop_platform_driver, CONFIG_DRM_ROCKCHIP);
+	ADD_ROCKCHIP_SUB_DRIVER(rockchip_dp_driver,
+				CONFIG_ROCKCHIP_ANALOGIX_DP);
+	ADD_ROCKCHIP_SUB_DRIVER(cdn_dp_driver, CONFIG_ROCKCHIP_CDN_DP);
+	ADD_ROCKCHIP_SUB_DRIVER(dw_hdmi_rockchip_pltfm_driver,
+				CONFIG_ROCKCHIP_DW_HDMI);
+	ADD_ROCKCHIP_SUB_DRIVER(dw_mipi_dsi_driver,
+				CONFIG_ROCKCHIP_DW_MIPI_DSI);
+	ADD_ROCKCHIP_SUB_DRIVER(inno_hdmi_driver, CONFIG_ROCKCHIP_INNO_HDMI);
+
+	ret = platform_register_drivers(rockchip_sub_drivers,
+					num_rockchip_sub_drivers);
+	if (ret)
+		return ret;
+
+	ret = platform_driver_register(&rockchip_drm_platform_driver);
+	if (ret)
+		goto err_unreg_drivers;
+
+	return 0;
+
+err_unreg_drivers:
+	platform_unregister_drivers(rockchip_sub_drivers,
+				    num_rockchip_sub_drivers);
+	return ret;
+}
+
+static void __exit rockchip_drm_fini(void)
+{
+	platform_driver_unregister(&rockchip_drm_platform_driver);
+
+	platform_unregister_drivers(rockchip_sub_drivers,
+				    num_rockchip_sub_drivers);
+}
+
+module_init(rockchip_drm_init);
+module_exit(rockchip_drm_fini);
 
 MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
 MODULE_DESCRIPTION("ROCKCHIP DRM Driver");

drivers/gpu/drm/rockchip/rockchip_drm_drv.h

@@ -65,4 +65,10 @@ void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
 int rockchip_drm_wait_line_flag(struct drm_crtc *crtc, unsigned int line_num,
 				unsigned int mstimeout);
 
+extern struct platform_driver cdn_dp_driver;
+extern struct platform_driver dw_hdmi_rockchip_pltfm_driver;
+extern struct platform_driver dw_mipi_dsi_driver;
+extern struct platform_driver inno_hdmi_driver;
+extern struct platform_driver rockchip_dp_driver;
+extern struct platform_driver vop_platform_driver;
 #endif /* _ROCKCHIP_DRM_DRV_H_ */

drivers/gpu/drm/rockchip/rockchip_vop_reg.c

@@ -404,7 +404,7 @@ static int vop_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct platform_driver vop_platform_driver = {
+struct platform_driver vop_platform_driver = {
 	.probe = vop_probe,
 	.remove = vop_remove,
 	.driver = {
@@ -412,9 +412,3 @@ static struct platform_driver vop_platform_driver = {
 		.of_match_table = of_match_ptr(vop_driver_dt_match),
 	},
 };
-
-module_platform_driver(vop_platform_driver);
-
-MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
-MODULE_DESCRIPTION("ROCKCHIP VOP Driver");
-MODULE_LICENSE("GPL v2");

drivers/gpu/drm/shmobile/shmob_drm_crtc.c

@@ -449,7 +449,8 @@ void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc)
 static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc,
 				    struct drm_framebuffer *fb,
 				    struct drm_pending_vblank_event *event,
-				    uint32_t page_flip_flags)
+				    uint32_t page_flip_flags,
+				    struct drm_modeset_acquire_ctx *ctx)
 {
 	struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
 	struct drm_device *dev = scrtc->crtc.dev;

drivers/gpu/drm/shmobile/shmob_drm_plane.c

@@ -177,7 +177,8 @@ shmob_drm_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
 		       struct drm_framebuffer *fb, int crtc_x, int crtc_y,
 		       unsigned int crtc_w, unsigned int crtc_h,
 		       uint32_t src_x, uint32_t src_y,
-		       uint32_t src_w, uint32_t src_h)
+		       uint32_t src_w, uint32_t src_h,
+		       struct drm_modeset_acquire_ctx *ctx)
 {
 	struct shmob_drm_plane *splane = to_shmob_plane(plane);
 	struct shmob_drm_device *sdev = plane->dev->dev_private;
@@ -208,7 +209,8 @@ shmob_drm_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
 	return 0;
 }
 
-static int shmob_drm_plane_disable(struct drm_plane *plane)
+static int shmob_drm_plane_disable(struct drm_plane *plane,
+				   struct drm_modeset_acquire_ctx *ctx)
 {
 	struct shmob_drm_plane *splane = to_shmob_plane(plane);
 	struct shmob_drm_device *sdev = plane->dev->dev_private;
@@ -221,7 +223,7 @@ static int shmob_drm_plane_disable(struct drm_plane *plane)
 
 static void shmob_drm_plane_destroy(struct drm_plane *plane)
 {
-	shmob_drm_plane_disable(plane);
+	drm_plane_force_disable(plane);
 	drm_plane_cleanup(plane);
 }
 

drivers/gpu/drm/tegra/dc.c

@@ -1382,7 +1382,7 @@ static int tegra_dc_show_regs(struct seq_file *s, void *data)
 	struct tegra_dc *dc = node->info_ent->data;
 	int err = 0;
 
-	drm_modeset_lock_crtc(&dc->base, NULL);
+	drm_modeset_lock(&dc->base.mutex, NULL);
 
 	if (!dc->base.state->active) {
 		err = -EBUSY;
@@ -1609,7 +1609,7 @@ static int tegra_dc_show_regs(struct seq_file *s, void *data)
 #undef DUMP_REG
 
 unlock:
-	drm_modeset_unlock_crtc(&dc->base);
+	drm_modeset_unlock(&dc->base.mutex);
 	return err;
 }
 
@@ -1620,7 +1620,7 @@ static int tegra_dc_show_crc(struct seq_file *s, void *data)
 	int err = 0;
 	u32 value;
 
-	drm_modeset_lock_crtc(&dc->base, NULL);
+	drm_modeset_lock(&dc->base.mutex, NULL);
 
 	if (!dc->base.state->active) {
 		err = -EBUSY;
@@ -1640,7 +1640,7 @@ static int tegra_dc_show_crc(struct seq_file *s, void *data)
 	tegra_dc_writel(dc, 0, DC_COM_CRC_CONTROL);
 
 unlock:
-	drm_modeset_unlock_crtc(&dc->base);
+	drm_modeset_unlock(&dc->base.mutex);
 	return err;
 }
 

drivers/gpu/drm/tilcdc/tilcdc_crtc.c

@@ -579,7 +579,7 @@ static void tilcdc_crtc_recover_work(struct work_struct *work)
 
 	dev_info(crtc->dev->dev, "%s: Reset CRTC", __func__);
 
-	drm_modeset_lock_crtc(crtc, NULL);
+	drm_modeset_lock(&crtc->mutex, NULL);
 
 	if (!tilcdc_crtc_is_on(crtc))
 		goto out;
@@ -587,7 +587,7 @@ static void tilcdc_crtc_recover_work(struct work_struct *work)
 	tilcdc_crtc_disable(crtc);
 	tilcdc_crtc_enable(crtc);
 out:
-	drm_modeset_unlock_crtc(crtc);
+	drm_modeset_unlock(&crtc->mutex);
 }
 
 static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
@@ -595,9 +595,9 @@ static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
 	struct tilcdc_drm_private *priv = crtc->dev->dev_private;
 
-	drm_modeset_lock_crtc(crtc, NULL);
+	drm_modeset_lock(&crtc->mutex, NULL);
 	tilcdc_crtc_disable(crtc);
-	drm_modeset_unlock_crtc(crtc);
+	drm_modeset_unlock(&crtc->mutex);
 
 	flush_workqueue(priv->wq);
 
@@ -856,7 +856,7 @@ void tilcdc_crtc_update_clk(struct drm_crtc *crtc)
 	struct tilcdc_drm_private *priv = dev->dev_private;
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
 
-	drm_modeset_lock_crtc(crtc, NULL);
+	drm_modeset_lock(&crtc->mutex, NULL);
 	if (tilcdc_crtc->lcd_fck_rate != clk_get_rate(priv->clk)) {
 		if (tilcdc_crtc_is_on(crtc)) {
 			pm_runtime_get_sync(dev->dev);
@@ -868,7 +868,7 @@ void tilcdc_crtc_update_clk(struct drm_crtc *crtc)
 			pm_runtime_put_sync(dev->dev);
 		}
 	}
-	drm_modeset_unlock_crtc(crtc);
+	drm_modeset_unlock(&crtc->mutex);
 }
 
 #define SYNC_LOST_COUNT_LIMIT 50

drivers/gpu/drm/tinydrm/core/tinydrm-core.c

@@ -122,21 +122,6 @@ void tinydrm_gem_cma_free_object(struct drm_gem_object *gem_obj)
 }
 EXPORT_SYMBOL_GPL(tinydrm_gem_cma_free_object);
 
-const struct file_operations tinydrm_fops = {
-	.owner		= THIS_MODULE,
-	.open		= drm_open,
-	.release	= drm_release,
-	.unlocked_ioctl	= drm_ioctl,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl	= drm_compat_ioctl,
-#endif
-	.poll		= drm_poll,
-	.read		= drm_read,
-	.llseek		= no_llseek,
-	.mmap		= drm_gem_cma_mmap,
-};
-EXPORT_SYMBOL(tinydrm_fops);
-
 static struct drm_framebuffer *
 tinydrm_fb_create(struct drm_device *drm, struct drm_file *file_priv,
 		  const struct drm_mode_fb_cmd2 *mode_cmd)
@@ -251,7 +236,7 @@ static void tinydrm_unregister(struct tinydrm_device *tdev)
 {
 	struct drm_fbdev_cma *fbdev_cma = tdev->fbdev_cma;
 
-	drm_crtc_force_disable_all(tdev->drm);
+	drm_atomic_helper_shutdown(tdev->drm);
 	/* don't restore fbdev in lastclose, keep pipeline disabled */
 	tdev->fbdev_cma = NULL;
 	drm_dev_unregister(tdev->drm);
@@ -302,7 +287,7 @@ EXPORT_SYMBOL(devm_tinydrm_register);
  */
 void tinydrm_shutdown(struct tinydrm_device *tdev)
 {
-	drm_crtc_force_disable_all(tdev->drm);
+	drm_atomic_helper_shutdown(tdev->drm);
 }
 EXPORT_SYMBOL(tinydrm_shutdown);
 

drivers/gpu/drm/tinydrm/mi0283qt.c

@@ -132,9 +132,12 @@ static const struct drm_display_mode mi0283qt_mode = {
 	TINYDRM_MODE(320, 240, 58, 43),
 };
 
+DEFINE_DRM_GEM_CMA_FOPS(mi0283qt_fops);
+
 static struct drm_driver mi0283qt_driver = {
 	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
 				  DRIVER_ATOMIC,
+	.fops			= &mi0283qt_fops,
 	TINYDRM_GEM_DRIVER_OPS,
 	.lastclose		= tinydrm_lastclose,
 	.debugfs_init		= mipi_dbi_debugfs_init,

drivers/gpu/drm/udl/udl_modeset.c

@@ -361,7 +361,8 @@ static void udl_crtc_destroy(struct drm_crtc *crtc)
 static int udl_crtc_page_flip(struct drm_crtc *crtc,
 			      struct drm_framebuffer *fb,
 			      struct drm_pending_vblank_event *event,
-			      uint32_t page_flip_flags)
+			      uint32_t page_flip_flags,
+			      struct drm_modeset_acquire_ctx *ctx)
 {
 	struct udl_framebuffer *ufb = to_udl_fb(fb);
 	struct drm_device *dev = crtc->dev;

drivers/gpu/drm/vc4/vc4_crtc.c

@@ -807,12 +807,13 @@ static int vc4_async_page_flip(struct drm_crtc *crtc,
 static int vc4_page_flip(struct drm_crtc *crtc,
 			 struct drm_framebuffer *fb,
 			 struct drm_pending_vblank_event *event,
-			 uint32_t flags)
+			 uint32_t flags,
+			 struct drm_modeset_acquire_ctx *ctx)
 {
 	if (flags & DRM_MODE_PAGE_FLIP_ASYNC)
 		return vc4_async_page_flip(crtc, fb, event, flags);
 	else
-		return drm_atomic_helper_page_flip(crtc, fb, event, flags);
+		return drm_atomic_helper_page_flip(crtc, fb, event, flags, ctx);
 }
 
 static struct drm_crtc_state *vc4_crtc_duplicate_state(struct drm_crtc *crtc)

drivers/gpu/drm/vc4/vc4_plane.c

@@ -756,7 +756,8 @@ vc4_update_plane(struct drm_plane *plane,
 		 int crtc_x, int crtc_y,
 		 unsigned int crtc_w, unsigned int crtc_h,
 		 uint32_t src_x, uint32_t src_y,
-		 uint32_t src_w, uint32_t src_h)
+		 uint32_t src_w, uint32_t src_h,
+		 struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_plane_state *plane_state;
 	struct vc4_plane_state *vc4_state;
@@ -817,7 +818,8 @@ out:
 					      crtc_x, crtc_y,
 					      crtc_w, crtc_h,
 					      src_x, src_y,
-					      src_w, src_h);
+					      src_w, src_h,
+					      ctx);
 }
 
 static const struct drm_plane_funcs vc4_plane_funcs = {

drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

@@ -2947,10 +2947,11 @@ vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv,
  * the vmwgfx modesetting. So explicitly clear that member before calling
  * into drm_atomic_helper_set_config.
  */
-int vmw_kms_set_config(struct drm_mode_set *set)
+int vmw_kms_set_config(struct drm_mode_set *set,
+		       struct drm_modeset_acquire_ctx *ctx)
 {
 	if (set && set->mode)
 		set->mode->type = 0;
 
-	return drm_atomic_helper_set_config(set);
+	return drm_atomic_helper_set_config(set, ctx);
 }

drivers/gpu/drm/vmwgfx/vmwgfx_kms.h

@@ -453,6 +453,7 @@ int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
 		     bool to_surface,
 		     bool interruptible);
 
-int vmw_kms_set_config(struct drm_mode_set *set);
+int vmw_kms_set_config(struct drm_mode_set *set,
+		       struct drm_modeset_acquire_ctx *ctx);
 
 #endif

drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c

@@ -310,7 +310,8 @@ static void vmw_sou_crtc_helper_disable(struct drm_crtc *crtc)
 static int vmw_sou_crtc_page_flip(struct drm_crtc *crtc,
 				  struct drm_framebuffer *new_fb,
 				  struct drm_pending_vblank_event *event,
-				  uint32_t flags)
+				  uint32_t flags,
+				  struct drm_modeset_acquire_ctx *ctx)
 {
 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 	struct drm_framebuffer *old_fb = crtc->primary->fb;
@@ -323,7 +324,7 @@ static int vmw_sou_crtc_page_flip(struct drm_crtc *crtc,
 		return -EINVAL;
 
 	flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
-	ret = drm_atomic_helper_page_flip(crtc, new_fb, NULL, flags);
+	ret = drm_atomic_helper_page_flip(crtc, new_fb, NULL, flags, ctx);
 	if (ret) {
 		DRM_ERROR("Page flip error %d.\n", ret);
 		return ret;

drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

@@ -481,7 +481,8 @@ static void vmw_stdu_crtc_helper_disable(struct drm_crtc *crtc)
 static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
 				   struct drm_framebuffer *new_fb,
 				   struct drm_pending_vblank_event *event,
-				   uint32_t flags)
+				   uint32_t flags,
+				   struct drm_modeset_acquire_ctx *ctx)
 
 {
 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
@@ -504,7 +505,7 @@ static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
 	 * don't hand it to the helper.
 	 */
 	flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
-	ret = drm_atomic_helper_page_flip(crtc, new_fb, NULL, flags);
+	ret = drm_atomic_helper_page_flip(crtc, new_fb, NULL, flags, ctx);
 	if (ret) {
 		DRM_ERROR("Page flip error %d.\n", ret);
 		return ret;

drivers/gpu/drm/zte/zx_hdmi.c

@@ -50,7 +50,6 @@ struct zx_hdmi {
 	struct clk *xclk;
 	bool sink_is_hdmi;
 	bool sink_has_audio;
-	const struct vou_inf *inf;
 	struct platform_device *audio_pdev;
 };
 

drivers/pci/pci.h

@@ -3,6 +3,8 @@
 
 #define PCI_FIND_CAP_TTL	48
 
+#define PCI_VSEC_ID_INTEL_TBT	0x1234	/* Thunderbolt */
+
 extern const unsigned char pcie_link_speed[];
 
 bool pcie_cap_has_lnkctl(const struct pci_dev *dev);

drivers/pci/probe.c

@@ -1208,6 +1208,24 @@ void set_pcie_hotplug_bridge(struct pci_dev *pdev)
 		pdev->is_hotplug_bridge = 1;
 }
 
+static void set_pcie_thunderbolt(struct pci_dev *dev)
+{
+	int vsec = 0;
+	u32 header;
+
+	while ((vsec = pci_find_next_ext_capability(dev, vsec,
+						    PCI_EXT_CAP_ID_VNDR))) {
+		pci_read_config_dword(dev, vsec + PCI_VNDR_HEADER, &header);
+
+		/* Is the device part of a Thunderbolt controller? */
+		if (dev->vendor == PCI_VENDOR_ID_INTEL &&
+		    PCI_VNDR_HEADER_ID(header) == PCI_VSEC_ID_INTEL_TBT) {
+			dev->is_thunderbolt = 1;
+			return;
+		}
+	}
+}
+
 /**
  * pci_ext_cfg_is_aliased - is ext config space just an alias of std config?
  * @dev: PCI device
@@ -1360,6 +1378,9 @@ int pci_setup_device(struct pci_dev *dev)
 	/* need to have dev->class ready */
 	dev->cfg_size = pci_cfg_space_size(dev);
 
+	/* need to have dev->cfg_size ready */
+	set_pcie_thunderbolt(dev);
+
 	/* "Unknown power state" */
 	dev->current_state = PCI_UNKNOWN;
 

drivers/platform/x86/apple-gmux.c

@@ -60,6 +60,7 @@ struct apple_gmux_data {
 	/* switcheroo data */
 	acpi_handle dhandle;
 	int gpe;
+	bool external_switchable;
 	enum vga_switcheroo_client_id switch_state_display;
 	enum vga_switcheroo_client_id switch_state_ddc;
 	enum vga_switcheroo_client_id switch_state_external;
@@ -358,6 +359,19 @@ static const struct backlight_ops gmux_bl_ops = {
  * ports while the discrete GPU is asleep, but currently we do not make use
  * of this feature.
  *
+ * Our switching policy for the external port is that on those generations
+ * which are able to switch it fully, the port is switched together with the
+ * panel when IGD / DIS commands are issued to vga_switcheroo. It is thus
+ * possible to drive e.g. a beamer on battery power with the integrated GPU.
+ * The user may manually switch to the discrete GPU if more performance is
+ * needed.
+ *
+ * On all newer generations, the external port can only be driven by the
+ * discrete GPU. If a display is plugged in while the panel is switched to
+ * the integrated GPU, *both* GPUs will be in use for maximum performance.
+ * To decrease power consumption, the user may manually switch to the
+ * discrete GPU, thereby suspending the integrated GPU.
+ *
  * gmux' initial switch state on bootup is user configurable via the EFI
  * variable ``gpu-power-prefs-fa4ce28d-b62f-4c99-9cc3-6815686e30f9`` (5th byte,
  * 1 = IGD, 0 = DIS). Based on this setting, the EFI firmware tells gmux to
@@ -414,7 +428,8 @@ static int gmux_switchto(enum vga_switcheroo_client_id id)
 {
 	apple_gmux_data->switch_state_ddc = id;
 	apple_gmux_data->switch_state_display = id;
-	apple_gmux_data->switch_state_external = id;
+	if (apple_gmux_data->external_switchable)
+		apple_gmux_data->switch_state_external = id;
 
 	gmux_write_switch_state(apple_gmux_data);
 
@@ -601,6 +616,11 @@ static struct pci_dev *gmux_get_io_pdev(void)
 	return NULL;
 }
 
+static int is_thunderbolt(struct device *dev, void *data)
+{
+	return to_pci_dev(dev)->is_thunderbolt;
+}
+
 static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
 {
 	struct apple_gmux_data *gmux_data;
@@ -755,6 +775,15 @@ static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
 		gmux_data->gpe = -1;
 	}
 
+	/*
+	 * If Thunderbolt is present, the external DP port is not fully
+	 * switchable. Force its AUX channel to the discrete GPU.
+	 */
+	gmux_data->external_switchable =
+		!bus_for_each_dev(&pci_bus_type, NULL, NULL, is_thunderbolt);
+	if (!gmux_data->external_switchable)
+		gmux_write8(gmux_data, GMUX_PORT_SWITCH_EXTERNAL, 3);
+
 	apple_gmux_data = gmux_data;
 	init_completion(&gmux_data->powerchange_done);
 	gmux_enable_interrupts(gmux_data);

include/drm/drmP.h

@@ -78,6 +78,8 @@
 #include <drm/drm_prime.h>
 #include <drm/drm_pci.h>
 #include <drm/drm_file.h>
+#include <drm/drm_debugfs.h>
+#include <drm/drm_ioctl.h>
 
 struct module;
 
@@ -316,81 +318,16 @@ struct pci_controller;
 
 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 
-/**
- * Ioctl function type.
- *
- * \param inode device inode.
- * \param file_priv DRM file private pointer.
- * \param cmd command.
- * \param arg argument.
- */
-typedef int drm_ioctl_t(struct drm_device *dev, void *data,
-			struct drm_file *file_priv);
-
-typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
-			       unsigned long arg);
-
-#define DRM_IOCTL_NR(n)                _IOC_NR(n)
-#define DRM_MAJOR       226
-
-#define DRM_AUTH	0x1
-#define	DRM_MASTER	0x2
-#define DRM_ROOT_ONLY	0x4
-#define DRM_CONTROL_ALLOW 0x8
-#define DRM_UNLOCKED	0x10
-#define DRM_RENDER_ALLOW 0x20
-
-struct drm_ioctl_desc {
-	unsigned int cmd;
-	int flags;
-	drm_ioctl_t *func;
-	const char *name;
-};
-
-/**
- * Creates a driver or general drm_ioctl_desc array entry for the given
- * ioctl, for use by drm_ioctl().
- */
-
-#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags)				\
-	[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {	\
-		.cmd = DRM_IOCTL_##ioctl,				\
-		.func = _func,						\
-		.flags = _flags,					\
-		.name = #ioctl						\
-	 }
 
 /* Flags and return codes for get_vblank_timestamp() driver function. */
 #define DRM_CALLED_FROM_VBLIRQ 1
 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
-#define DRM_VBLANKTIME_IN_VBLANK         (1 << 1)
 
 /* get_scanout_position() return flags */
 #define DRM_SCANOUTPOS_VALID        (1 << 0)
 #define DRM_SCANOUTPOS_IN_VBLANK    (1 << 1)
 #define DRM_SCANOUTPOS_ACCURATE     (1 << 2)
 
-/**
- * Info file list entry. This structure represents a debugfs or proc file to
- * be created by the drm core
- */
-struct drm_info_list {
-	const char *name; /** file name */
-	int (*show)(struct seq_file*, void*); /** show callback */
-	u32 driver_features; /**< Required driver features for this entry */
-	void *data;
-};
-
-/**
- * debugfs node structure. This structure represents a debugfs file.
- */
-struct drm_info_node {
-	struct list_head list;
-	struct drm_minor *minor;
-	const struct drm_info_list *info_ent;
-	struct dentry *dent;
-};
-
 /**
  * DRM device structure. This structure represent a complete card that
  * may contain multiple heads.
@@ -569,51 +506,12 @@ static inline int drm_device_is_unplugged(struct drm_device *dev)
 /*@{*/
 
 				/* Driver support (drm_drv.h) */
-extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv);
-extern long drm_ioctl(struct file *filp,
-		      unsigned int cmd, unsigned long arg);
-#ifdef CONFIG_COMPAT
-extern long drm_compat_ioctl(struct file *filp,
-			     unsigned int cmd, unsigned long arg);
-#else
-/* Let drm_compat_ioctl be assigned to .compat_ioctl unconditionally */
-#define drm_compat_ioctl NULL
-#endif
-extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
-
-/* Misc. IOCTL support (drm_ioctl.c) */
-int drm_noop(struct drm_device *dev, void *data,
-	     struct drm_file *file_priv);
-int drm_invalid_op(struct drm_device *dev, void *data,
-		   struct drm_file *file_priv);
 
 /*
  * These are exported to drivers so that they can implement fencing using
  * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
  */
 
-				/* Debugfs support */
-#if defined(CONFIG_DEBUG_FS)
-extern int drm_debugfs_create_files(const struct drm_info_list *files,
-				    int count, struct dentry *root,
-				    struct drm_minor *minor);
-extern int drm_debugfs_remove_files(const struct drm_info_list *files,
-				    int count, struct drm_minor *minor);
-#else
-static inline int drm_debugfs_create_files(const struct drm_info_list *files,
-					   int count, struct dentry *root,
-					   struct drm_minor *minor)
-{
-	return 0;
-}
-
-static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
-					   int count, struct drm_minor *minor)
-{
-	return 0;
-}
-#endif
-
 			       /* sysfs support (drm_sysfs.c) */
 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
 

include/drm/drm_atomic.h

@@ -498,6 +498,23 @@ int __must_check drm_atomic_nonblocking_commit(struct drm_atomic_state *state);
 
 void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 
+/**
+ * for_each_connector_in_state - iterate over all connectors in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @connector: &struct drm_connector iteration cursor
+ * @connector_state: &struct drm_connector_state iteration cursor
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all connectors in an atomic update. Note that before the
+ * software state is committed (by calling drm_atomic_helper_swap_state(), this
+ * points to the new state, while afterwards it points to the old state. Due to
+ * this tricky confusion this macro is deprecated.
+ *
+ * FIXME:
+ *
+ * Replace all usage of this with one of the explicit iterators below and then
+ * remove this macro.
+ */
 #define for_each_connector_in_state(__state, connector, connector_state, __i) \
 	for ((__i) = 0;							\
 	     (__i) < (__state)->num_connector &&				\
@@ -506,6 +523,20 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (connector)
 
+/**
+ * for_each_oldnew_connector_in_state - iterate over all connectors in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @connector: &struct drm_connector iteration cursor
+ * @old_connector_state: &struct drm_connector_state iteration cursor for the
+ * 	old state
+ * @new_connector_state: &struct drm_connector_state iteration cursor for the
+ * 	new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all connectors in an atomic update, tracking both old and
+ * new state. This is useful in places where the state delta needs to be
+ * considered, for example in atomic check functions.
+ */
 #define for_each_oldnew_connector_in_state(__state, connector, old_connector_state, new_connector_state, __i) \
 	for ((__i) = 0;								\
 	     (__i) < (__state)->num_connector &&				\
@@ -515,6 +546,18 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (connector)
 
+/**
+ * for_each_old_connector_in_state - iterate over all connectors in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @connector: &struct drm_connector iteration cursor
+ * @old_connector_state: &struct drm_connector_state iteration cursor for the
+ * 	old state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all connectors in an atomic update, tracking only the old
+ * state. This is useful in disable functions, where we need the old state the
+ * hardware is still in.
+ */
 #define for_each_old_connector_in_state(__state, connector, old_connector_state, __i) \
 	for ((__i) = 0;								\
 	     (__i) < (__state)->num_connector &&				\
@@ -523,6 +566,18 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (connector)
 
+/**
+ * for_each_new_connector_in_state - iterate over all connectors in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @connector: &struct drm_connector iteration cursor
+ * @new_connector_state: &struct drm_connector_state iteration cursor for the
+ * 	new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all connectors in an atomic update, tracking only the new
+ * state. This is useful in enable functions, where we need the new state the
+ * hardware should be in when the atomic commit operation has completed.
+ */
 #define for_each_new_connector_in_state(__state, connector, new_connector_state, __i) \
 	for ((__i) = 0;								\
 	     (__i) < (__state)->num_connector &&				\
@@ -531,6 +586,23 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (connector)
 
+/**
+ * for_each_crtc_in_state - iterate over all connectors in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @crtc: &struct drm_crtc iteration cursor
+ * @crtc_state: &struct drm_crtc_state iteration cursor
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all CRTCs in an atomic update. Note that before the
+ * software state is committed (by calling drm_atomic_helper_swap_state(), this
+ * points to the new state, while afterwards it points to the old state. Due to
+ * this tricky confusion this macro is deprecated.
+ *
+ * FIXME:
+ *
+ * Replace all usage of this with one of the explicit iterators below and then
+ * remove this macro.
+ */
 #define for_each_crtc_in_state(__state, crtc, crtc_state, __i)	\
 	for ((__i) = 0;						\
 	     (__i) < (__state)->dev->mode_config.num_crtc &&	\
@@ -539,6 +611,18 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)						\
 		for_each_if (crtc_state)
 
+/**
+ * for_each_oldnew_crtc_in_state - iterate over all CRTCs in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @crtc: &struct drm_crtc iteration cursor
+ * @old_crtc_state: &struct drm_crtc_state iteration cursor for the old state
+ * @new_crtc_state: &struct drm_crtc_state iteration cursor for the new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all CRTCs in an atomic update, tracking both old and
+ * new state. This is useful in places where the state delta needs to be
+ * considered, for example in atomic check functions.
+ */
 #define for_each_oldnew_crtc_in_state(__state, crtc, old_crtc_state, new_crtc_state, __i) \
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_crtc &&		\
@@ -548,6 +632,17 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (crtc)
 
+/**
+ * for_each_old_crtc_in_state - iterate over all CRTCs in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @crtc: &struct drm_crtc iteration cursor
+ * @old_crtc_state: &struct drm_crtc_state iteration cursor for the old state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all CRTCs in an atomic update, tracking only the old
+ * state. This is useful in disable functions, where we need the old state the
+ * hardware is still in.
+ */
 #define for_each_old_crtc_in_state(__state, crtc, old_crtc_state, __i)	\
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_crtc &&		\
@@ -556,6 +651,17 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (crtc)
 
+/**
+ * for_each_new_crtc_in_state - iterate over all CRTCs in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @crtc: &struct drm_crtc iteration cursor
+ * @new_crtc_state: &struct drm_crtc_state iteration cursor for the new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all CRTCs in an atomic update, tracking only the new
+ * state. This is useful in enable functions, where we need the new state the
+ * hardware should be in when the atomic commit operation has completed.
+ */
 #define for_each_new_crtc_in_state(__state, crtc, new_crtc_state, __i)	\
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_crtc &&		\
@@ -564,6 +670,23 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (crtc)
 
+/**
+ * for_each_plane_in_state - iterate over all planes in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @plane: &struct drm_plane iteration cursor
+ * @plane_state: &struct drm_plane_state iteration cursor
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all planes in an atomic update. Note that before the
+ * software state is committed (by calling drm_atomic_helper_swap_state(), this
+ * points to the new state, while afterwards it points to the old state. Due to
+ * this tricky confusion this macro is deprecated.
+ *
+ * FIXME:
+ *
+ * Replace all usage of this with one of the explicit iterators below and then
+ * remove this macro.
+ */
 #define for_each_plane_in_state(__state, plane, plane_state, __i)		\
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_total_plane &&	\
@@ -572,6 +695,18 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (plane_state)
 
+/**
+ * for_each_oldnew_plane_in_state - iterate over all planes in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @plane: &struct drm_plane iteration cursor
+ * @old_plane_state: &struct drm_plane_state iteration cursor for the old state
+ * @new_plane_state: &struct drm_plane_state iteration cursor for the new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all planes in an atomic update, tracking both old and
+ * new state. This is useful in places where the state delta needs to be
+ * considered, for example in atomic check functions.
+ */
 #define for_each_oldnew_plane_in_state(__state, plane, old_plane_state, new_plane_state, __i) \
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_total_plane &&	\
@@ -581,6 +716,17 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (plane)
 
+/**
+ * for_each_old_plane_in_state - iterate over all planes in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @plane: &struct drm_plane iteration cursor
+ * @old_plane_state: &struct drm_plane_state iteration cursor for the old state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all planes in an atomic update, tracking only the old
+ * state. This is useful in disable functions, where we need the old state the
+ * hardware is still in.
+ */
 #define for_each_old_plane_in_state(__state, plane, old_plane_state, __i) \
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_total_plane &&	\
@@ -589,6 +735,17 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	     (__i)++)							\
 		for_each_if (plane)
 
+/**
+ * for_each_new_plane_in_state - iterate over all planes in an atomic update
+ * @__state: &struct drm_atomic_state pointer
+ * @plane: &struct drm_plane iteration cursor
+ * @new_plane_state: &struct drm_plane_state iteration cursor for the new state
+ * @__i: int iteration cursor, for macro-internal use
+ *
+ * This iterates over all planes in an atomic update, tracking only the new
+ * state. This is useful in enable functions, where we need the new state the
+ * hardware should be in when the atomic commit operation has completed.
+ */
 #define for_each_new_plane_in_state(__state, plane, new_plane_state, __i) \
 	for ((__i) = 0;							\
 	     (__i) < (__state)->dev->mode_config.num_total_plane &&	\
@@ -603,7 +760,7 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
  *
  * To give drivers flexibility &struct drm_crtc_state has 3 booleans to track
  * whether the state CRTC changed enough to need a full modeset cycle:
- * connectors_changed, mode_changed and active_changed. This helper simply
+ * planes_changed, mode_changed and active_changed. This helper simply
  * combines these three to compute the overall need for a modeset for @state.
  *
  * The atomic helper code sets these booleans, but drivers can and should

include/drm/drm_atomic_helper.h

@@ -94,16 +94,20 @@ int drm_atomic_helper_update_plane(struct drm_plane *plane,
 				   int crtc_x, int crtc_y,
 				   unsigned int crtc_w, unsigned int crtc_h,
 				   uint32_t src_x, uint32_t src_y,
-				   uint32_t src_w, uint32_t src_h);
-int drm_atomic_helper_disable_plane(struct drm_plane *plane);
+				   uint32_t src_w, uint32_t src_h,
+				   struct drm_modeset_acquire_ctx *ctx);
+int drm_atomic_helper_disable_plane(struct drm_plane *plane,
+				    struct drm_modeset_acquire_ctx *ctx);
 int __drm_atomic_helper_disable_plane(struct drm_plane *plane,
 		struct drm_plane_state *plane_state);
-int drm_atomic_helper_set_config(struct drm_mode_set *set);
+int drm_atomic_helper_set_config(struct drm_mode_set *set,
+				 struct drm_modeset_acquire_ctx *ctx);
 int __drm_atomic_helper_set_config(struct drm_mode_set *set,
 		struct drm_atomic_state *state);
 
 int drm_atomic_helper_disable_all(struct drm_device *dev,
 				  struct drm_modeset_acquire_ctx *ctx);
+void drm_atomic_helper_shutdown(struct drm_device *dev);
 struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev);
 int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state,
 					      struct drm_modeset_acquire_ctx *ctx);
@@ -122,13 +126,15 @@ int drm_atomic_helper_connector_set_property(struct drm_connector *connector,
 int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
 				struct drm_framebuffer *fb,
 				struct drm_pending_vblank_event *event,
-				uint32_t flags);
+				uint32_t flags,
+				struct drm_modeset_acquire_ctx *ctx);
 int drm_atomic_helper_page_flip_target(
 				struct drm_crtc *crtc,
 				struct drm_framebuffer *fb,
 				struct drm_pending_vblank_event *event,
 				uint32_t flags,
-				uint32_t target);
+				uint32_t target,
+				struct drm_modeset_acquire_ctx *ctx);
 int drm_atomic_helper_connector_dpms(struct drm_connector *connector,
 				     int mode);
 struct drm_encoder *

include/drm/drm_connector.h

@@ -133,6 +133,7 @@ struct drm_scdc {
  * This information is available in CEA-861-F extension blocks (like HF-VSDB).
  */
 struct drm_hdmi_info {
+	/** @scdc: sink's scdc support and capabilities */
 	struct drm_scdc scdc;
 };
 
@@ -655,7 +656,6 @@ struct drm_cmdline_mode {
  * @bad_edid_counter: track sinks that give us an EDID with invalid checksum
  * @edid_corrupt: indicates whether the last read EDID was corrupt
  * @debugfs_entry: debugfs directory for this connector
- * @state: current atomic state for this connector
  * @has_tile: is this connector connected to a tiled monitor
  * @tile_group: tile group for the connected monitor
  * @tile_is_single_monitor: whether the tile is one monitor housing
@@ -823,6 +823,21 @@ struct drm_connector {
 
 	struct dentry *debugfs_entry;
 
+	/**
+	 * @state:
+	 *
+	 * Current atomic state for this connector.
+	 *
+	 * This is protected by @drm_mode_config.connection_mutex. Note that
+	 * nonblocking atomic commits access the current connector state without
+	 * taking locks. Either by going through the &struct drm_atomic_state
+	 * pointers, see for_each_connector_in_state(),
+	 * for_each_oldnew_connector_in_state(),
+	 * for_each_old_connector_in_state() and
+	 * for_each_new_connector_in_state(). Or through careful ordering of
+	 * atomic commit operations as implemented in the atomic helpers, see
+	 * &struct drm_crtc_commit.
+	 */
 	struct drm_connector_state *state;
 
 	/* DisplayID bits */

include/drm/drm_crtc.h

@@ -347,7 +347,8 @@ struct drm_crtc_funcs {
 	 *
 	 * 0 on success or a negative error code on failure.
 	 */
-	int (*set_config)(struct drm_mode_set *set);
+	int (*set_config)(struct drm_mode_set *set,
+			  struct drm_modeset_acquire_ctx *ctx);
 
 	/**
 	 * @page_flip:
@@ -405,7 +406,8 @@ struct drm_crtc_funcs {
 	int (*page_flip)(struct drm_crtc *crtc,
 			 struct drm_framebuffer *fb,
 			 struct drm_pending_vblank_event *event,
-			 uint32_t flags);
+			 uint32_t flags,
+			 struct drm_modeset_acquire_ctx *ctx);
 
 	/**
 	 * @page_flip_target:
@@ -423,7 +425,8 @@ struct drm_crtc_funcs {
 	int (*page_flip_target)(struct drm_crtc *crtc,
 				struct drm_framebuffer *fb,
 				struct drm_pending_vblank_event *event,
-				uint32_t flags, uint32_t target);
+				uint32_t flags, uint32_t target,
+				struct drm_modeset_acquire_ctx *ctx);
 
 	/**
 	 * @set_property:
@@ -590,9 +593,12 @@ struct drm_crtc_funcs {
 	 * When CRC generation is enabled, the driver should call
 	 * drm_crtc_add_crc_entry() at each frame, providing any information
 	 * that characterizes the frame contents in the crcN arguments, as
-	 * provided from the configured source. Drivers must accept a "auto"
+	 * provided from the configured source. Drivers must accept an "auto"
 	 * source name that will select a default source for this CRTC.
 	 *
+	 * Note that "auto" can depend upon the current modeset configuration,
+	 * e.g. it could pick an encoder or output specific CRC sampling point.
+	 *
 	 * This callback is optional if the driver does not support any CRC
 	 * generation functionality.
 	 *
@@ -696,10 +702,12 @@ struct drm_crtc {
 	/**
 	 * @mutex:
 	 *
-	 * This provides a read lock for the overall crtc state (mode, dpms
+	 * This provides a read lock for the overall CRTC state (mode, dpms
 	 * state, ...) and a write lock for everything which can be update
-	 * without a full modeset (fb, cursor data, crtc properties ...). A full
+	 * without a full modeset (fb, cursor data, CRTC properties ...). A full
 	 * modeset also need to grab &drm_mode_config.connection_mutex.
+	 *
+	 * For atomic drivers specifically this protects @state.
 	 */
 	struct drm_modeset_lock mutex;
 
@@ -745,6 +753,14 @@ struct drm_crtc {
 	 * @state:
 	 *
 	 * Current atomic state for this CRTC.
+	 *
+	 * This is protected by @mutex. Note that nonblocking atomic commits
+	 * access the current CRTC state without taking locks. Either by going
+	 * through the &struct drm_atomic_state pointers, see
+	 * for_each_crtc_in_state(), for_each_oldnew_crtc_in_state(),
+	 * for_each_old_crtc_in_state() and for_each_new_crtc_in_state(). Or
+	 * through careful ordering of atomic commit operations as implemented
+	 * in the atomic helpers, see &struct drm_crtc_commit.
 	 */
 	struct drm_crtc_state *state;
 

include/drm/drm_crtc_helper.h

@@ -43,18 +43,19 @@
 #include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_modeset_helper.h>
 
-extern void drm_helper_disable_unused_functions(struct drm_device *dev);
-extern int drm_crtc_helper_set_config(struct drm_mode_set *set);
-extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
-				     struct drm_display_mode *mode,
-				     int x, int y,
-				     struct drm_framebuffer *old_fb);
-extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
-extern bool drm_helper_encoder_in_use(struct drm_encoder *encoder);
+void drm_helper_disable_unused_functions(struct drm_device *dev);
+int drm_crtc_helper_set_config(struct drm_mode_set *set,
+			       struct drm_modeset_acquire_ctx *ctx);
+bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
+			      struct drm_display_mode *mode,
+			      int x, int y,
+			      struct drm_framebuffer *old_fb);
+bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
+bool drm_helper_encoder_in_use(struct drm_encoder *encoder);
 
-extern int drm_helper_connector_dpms(struct drm_connector *connector, int mode);
+int drm_helper_connector_dpms(struct drm_connector *connector, int mode);
 
-extern void drm_helper_resume_force_mode(struct drm_device *dev);
+void drm_helper_resume_force_mode(struct drm_device *dev);
 
 int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
 			     struct drm_display_mode *adjusted_mode, int x, int y,
@@ -63,15 +64,15 @@ int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 				  struct drm_framebuffer *old_fb);
 
 /* drm_probe_helper.c */
-extern int drm_helper_probe_single_connector_modes(struct drm_connector
-						   *connector, uint32_t maxX,
-						   uint32_t maxY);
-extern void drm_kms_helper_poll_init(struct drm_device *dev);
-extern void drm_kms_helper_poll_fini(struct drm_device *dev);
-extern bool drm_helper_hpd_irq_event(struct drm_device *dev);
-extern void drm_kms_helper_hotplug_event(struct drm_device *dev);
+int drm_helper_probe_single_connector_modes(struct drm_connector
+					    *connector, uint32_t maxX,
+					    uint32_t maxY);
+void drm_kms_helper_poll_init(struct drm_device *dev);
+void drm_kms_helper_poll_fini(struct drm_device *dev);
+bool drm_helper_hpd_irq_event(struct drm_device *dev);
+void drm_kms_helper_hotplug_event(struct drm_device *dev);
 
-extern void drm_kms_helper_poll_disable(struct drm_device *dev);
-extern void drm_kms_helper_poll_enable(struct drm_device *dev);
+void drm_kms_helper_poll_disable(struct drm_device *dev);
+void drm_kms_helper_poll_enable(struct drm_device *dev);
 
 #endif

include/drm/drm_debugfs.h

@@ -0,0 +1,101 @@
+/*
+ * Internal Header for the Direct Rendering Manager
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * Copyright (c) 2009-2010, Code Aurora Forum.
+ * All rights reserved.
+ *
+ * Author: Rickard E. (Rik) Faith <faith@valinux.com>
+ * Author: Gareth Hughes <gareth@valinux.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DRM_DEBUGFS_H_
+#define _DRM_DEBUGFS_H_
+
+/**
+ * struct drm_info_list - debugfs info list entry
+ *
+ * This structure represents a debugfs file to be created by the drm
+ * core.
+ */
+struct drm_info_list {
+	/** @name: file name */
+	const char *name;
+	/**
+	 * @show:
+	 *
+	 * Show callback. &seq_file->private will be set to the &struct
+	 * drm_info_node corresponding to the instance of this info on a given
+	 * &struct drm_minor.
+	 */
+	int (*show)(struct seq_file*, void*);
+	/** @driver_features: Required driver features for this entry */
+	u32 driver_features;
+	/** @data: Driver-private data, should not be device-specific. */
+	void *data;
+};
+
+/**
+ * struct drm_info_node - Per-minor debugfs node structure
+ *
+ * This structure represents a debugfs file, as an instantiation of a &struct
+ * drm_info_list on a &struct drm_minor.
+ *
+ * FIXME:
+ *
+ * No it doesn't make a hole lot of sense that we duplicate debugfs entries for
+ * both the render and the primary nodes, but that's how this has organically
+ * grown. It should probably be fixed, with a compatibility link, if needed.
+ */
+struct drm_info_node {
+	/** @minor: &struct drm_minor for this node. */
+	struct drm_minor *minor;
+	/** @info_ent: template for this node. */
+	const struct drm_info_list *info_ent;
+	/* private: */
+	struct list_head list;
+	struct dentry *dent;
+};
+
+#if defined(CONFIG_DEBUG_FS)
+int drm_debugfs_create_files(const struct drm_info_list *files,
+			     int count, struct dentry *root,
+			     struct drm_minor *minor);
+int drm_debugfs_remove_files(const struct drm_info_list *files,
+			     int count, struct drm_minor *minor);
+#else
+static inline int drm_debugfs_create_files(const struct drm_info_list *files,
+					   int count, struct dentry *root,
+					   struct drm_minor *minor)
+{
+	return 0;
+}
+
+static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
+					   int count, struct drm_minor *minor)
+{
+	return 0;
+}
+#endif
+
+#endif /* _DRM_DEBUGFS_H_ */

include/drm/drm_dp_mst_helper.h

@@ -479,18 +479,6 @@ struct drm_dp_mst_topology_mgr {
 	 * @pbn_div: PBN to slots divisor.
 	 */
 	int pbn_div;
-	/**
-	 * @total_slots: Total slots that can be allocated.
-	 */
-	int total_slots;
-	/**
-	 * @avail_slots: Still available slots that can be allocated.
-	 */
-	int avail_slots;
-	/**
-	 * @total_pbn: Total PBN count.
-	 */
-	int total_pbn;
 
 	/**
 	 * @qlock: protects @tx_msg_downq, the &drm_dp_mst_branch.txslost and
@@ -579,7 +567,8 @@ struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_
 int drm_dp_calc_pbn_mode(int clock, int bpp);
 
 
-bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, int pbn, int *slots);
+bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr,
+			      struct drm_dp_mst_port *port, int pbn, int slots);
 
 int drm_dp_mst_get_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
 

include/drm/drm_drv.h

@@ -522,11 +522,11 @@ struct drm_driver {
 	int dev_priv_size;
 };
 
-extern __printf(6, 7)
+__printf(6, 7)
 void drm_dev_printk(const struct device *dev, const char *level,
 		    unsigned int category, const char *function_name,
 		    const char *prefix, const char *format, ...);
-extern __printf(3, 4)
+__printf(3, 4)
 void drm_printk(const char *level, unsigned int category,
 		const char *format, ...);
 extern unsigned int drm_debug;

include/drm/drm_fourcc.h

@@ -25,6 +25,9 @@
 #include <linux/types.h>
 #include <uapi/drm/drm_fourcc.h>
 
+struct drm_device;
+struct drm_mode_fb_cmd2;
+
 /**
  * struct drm_format_info - information about a DRM format
  * @format: 4CC format identifier (DRM_FORMAT_*)
@@ -55,6 +58,9 @@ struct drm_format_name_buf {
 
 const struct drm_format_info *__drm_format_info(u32 format);
 const struct drm_format_info *drm_format_info(u32 format);
+const struct drm_format_info *
+drm_get_format_info(struct drm_device *dev,
+		    const struct drm_mode_fb_cmd2 *mode_cmd);
 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
 int drm_format_num_planes(uint32_t format);
 int drm_format_plane_cpp(uint32_t format, int plane);

include/drm/drm_global.h

@@ -45,9 +45,9 @@ struct drm_global_reference {
 	void (*release) (struct drm_global_reference *);
 };
 
-extern void drm_global_init(void);
-extern void drm_global_release(void);
-extern int drm_global_item_ref(struct drm_global_reference *ref);
-extern void drm_global_item_unref(struct drm_global_reference *ref);
+void drm_global_init(void);
+void drm_global_release(void);
+int drm_global_item_ref(struct drm_global_reference *ref);
+void drm_global_item_unref(struct drm_global_reference *ref);
 
 #endif

include/drm/drm_hashtab.h

@@ -49,17 +49,17 @@ struct drm_open_hash {
 	u8 order;
 };
 
-extern int drm_ht_create(struct drm_open_hash *ht, unsigned int order);
-extern int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item);
-extern int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *item,
-				     unsigned long seed, int bits, int shift,
-				     unsigned long add);
-extern int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item);
+int drm_ht_create(struct drm_open_hash *ht, unsigned int order);
+int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item);
+int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *item,
+			      unsigned long seed, int bits, int shift,
+			      unsigned long add);
+int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item);
 
-extern void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key);
-extern int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key);
-extern int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item);
-extern void drm_ht_remove(struct drm_open_hash *ht);
+void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key);
+int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key);
+int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item);
+void drm_ht_remove(struct drm_open_hash *ht);
 
 /*
  * RCU-safe interface

include/drm/drm_ioctl.h

@@ -0,0 +1,102 @@
+/*
+ * Internal Header for the Direct Rendering Manager
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * Copyright (c) 2009-2010, Code Aurora Forum.
+ * All rights reserved.
+ *
+ * Author: Rickard E. (Rik) Faith <faith@valinux.com>
+ * Author: Gareth Hughes <gareth@valinux.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DRM_IOCTL_H_
+#define _DRM_IOCTL_H_
+
+#include <linux/types.h>
+
+#include <asm/ioctl.h>
+
+struct drm_device;
+struct drm_file;
+struct file;
+
+/**
+ * Ioctl function type.
+ *
+ * \param inode device inode.
+ * \param file_priv DRM file private pointer.
+ * \param cmd command.
+ * \param arg argument.
+ */
+typedef int drm_ioctl_t(struct drm_device *dev, void *data,
+			struct drm_file *file_priv);
+
+typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
+			       unsigned long arg);
+
+#define DRM_IOCTL_NR(n)                _IOC_NR(n)
+#define DRM_MAJOR       226
+
+#define DRM_AUTH	0x1
+#define	DRM_MASTER	0x2
+#define DRM_ROOT_ONLY	0x4
+#define DRM_CONTROL_ALLOW 0x8
+#define DRM_UNLOCKED	0x10
+#define DRM_RENDER_ALLOW 0x20
+
+struct drm_ioctl_desc {
+	unsigned int cmd;
+	int flags;
+	drm_ioctl_t *func;
+	const char *name;
+};
+
+/**
+ * Creates a driver or general drm_ioctl_desc array entry for the given
+ * ioctl, for use by drm_ioctl().
+ */
+
+#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags)				\
+	[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {	\
+		.cmd = DRM_IOCTL_##ioctl,				\
+		.func = _func,						\
+		.flags = _flags,					\
+		.name = #ioctl						\
+	}
+
+int drm_ioctl_permit(u32 flags, struct drm_file *file_priv);
+long drm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
+#ifdef CONFIG_COMPAT
+long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
+#else
+/* Let drm_compat_ioctl be assigned to .compat_ioctl unconditionally */
+#define drm_compat_ioctl NULL
+#endif
+bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
+
+int drm_noop(struct drm_device *dev, void *data,
+	     struct drm_file *file_priv);
+int drm_invalid_op(struct drm_device *dev, void *data,
+		   struct drm_file *file_priv);
+
+#endif /* _DRM_IOCTL_H_ */

include/drm/drm_mode_config.h

@@ -34,6 +34,7 @@ struct drm_file;
 struct drm_device;
 struct drm_atomic_state;
 struct drm_mode_fb_cmd2;
+struct drm_format_info;
 
 /**
  * struct drm_mode_config_funcs - basic driver provided mode setting functions
@@ -69,6 +70,19 @@ struct drm_mode_config_funcs {
 					     struct drm_file *file_priv,
 					     const struct drm_mode_fb_cmd2 *mode_cmd);
 
+	/**
+	 * @get_format_info:
+	 *
+	 * Allows a driver to return custom format information for special
+	 * fb layouts (eg. ones with auxiliary compression control planes).
+	 *
+	 * RETURNS:
+	 *
+	 * The format information specific to the given fb metadata, or
+	 * NULL if none is found.
+	 */
+	const struct drm_format_info *(*get_format_info)(const struct drm_mode_fb_cmd2 *mode_cmd);
+
 	/**
 	 * @output_poll_changed:
 	 *
@@ -293,21 +307,6 @@ struct drm_mode_config_funcs {
 
 /**
  * struct drm_mode_config - Mode configuration control structure
- * @mutex: mutex protecting KMS related lists and structures
- * @connection_mutex: ww mutex protecting connector state and routing
- * @acquire_ctx: global implicit acquire context used by atomic drivers for
- * 	legacy IOCTLs
- * @fb_lock: mutex to protect fb state and lists
- * @num_fb: number of fbs available
- * @fb_list: list of framebuffers available
- * @num_encoder: number of encoders on this device
- * @encoder_list: list of encoder objects
- * @num_overlay_plane: number of overlay planes on this device
- * @num_total_plane: number of universal (i.e. with primary/curso) planes on this device
- * @plane_list: list of plane objects
- * @num_crtc: number of CRTCs on this device
- * @crtc_list: list of CRTC objects
- * @property_list: list of property objects
  * @min_width: minimum pixel width on this device
  * @min_height: minimum pixel height on this device
  * @max_width: maximum pixel width on this device
@@ -318,9 +317,6 @@ struct drm_mode_config_funcs {
  * @poll_running: track polling status for this device
  * @delayed_event: track delayed poll uevent deliver for this device
  * @output_poll_work: delayed work for polling in process context
- * @property_blob_list: list of all the blob property objects
- * @blob_lock: mutex for blob property allocation and management
- * @*_property: core property tracking
  * @preferred_depth: preferred RBG pixel depth, used by fb helpers
  * @prefer_shadow: hint to userspace to prefer shadow-fb rendering
  * @cursor_width: hint to userspace for max cursor width
@@ -332,9 +328,37 @@ struct drm_mode_config_funcs {
  * global restrictions are also here, e.g. dimension restrictions.
  */
 struct drm_mode_config {
-	struct mutex mutex; /* protects configuration (mode lists etc.) */
-	struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */
-	struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */
+	/**
+	 * @mutex:
+	 *
+	 * This is the big scary modeset BKL which protects everything that
+	 * isn't protect otherwise. Scope is unclear and fuzzy, try to remove
+	 * anything from under it's protection and move it into more well-scoped
+	 * locks.
+	 *
+	 * The one important thing this protects is the use of @acquire_ctx.
+	 */
+	struct mutex mutex;
+
+	/**
+	 * @connection_mutex:
+	 *
+	 * This protects connector state and the connector to encoder to CRTC
+	 * routing chain.
+	 *
+	 * For atomic drivers specifically this protects &drm_connector.state.
+	 */
+	struct drm_modeset_lock connection_mutex;
+
+	/**
+	 * @acquire_ctx:
+	 *
+	 * Global implicit acquire context used by atomic drivers for legacy
+	 * IOCTLs. Deprecated, since implicit locking contexts make it
+	 * impossible to use driver-private &struct drm_modeset_lock. Users of
+	 * this must hold @mutex.
+	 */
+	struct drm_modeset_acquire_ctx *acquire_ctx;
 
 	/**
 	 * @idr_mutex:
@@ -360,8 +384,11 @@ struct drm_mode_config {
 	 */
 	struct idr tile_idr;
 
-	struct mutex fb_lock; /* proctects global and per-file fb lists */
+	/** @fb_lock: Mutex to protect fb the global @fb_list and @num_fb. */
+	struct mutex fb_lock;
+	/** @num_fb: Number of entries on @fb_list. */
 	int num_fb;
+	/** @fb_list: List of all &struct drm_framebuffer. */
 	struct list_head fb_list;
 
 	/**
@@ -379,27 +406,80 @@ struct drm_mode_config {
 	 */
 	struct ida connector_ida;
 	/**
-	 * @connector_list: List of connector objects. Protected by
-	 * @connector_list_lock. Only use drm_for_each_connector_iter() and
+	 * @connector_list:
+	 *
+	 * List of connector objects linked with &drm_connector.head. Protected
+	 * by @connector_list_lock. Only use drm_for_each_connector_iter() and
 	 * &struct drm_connector_list_iter to walk this list.
 	 */
 	struct list_head connector_list;
+	/**
+	 * @num_encoder:
+	 *
+	 * Number of encoders on this device. This is invariant over the
+	 * lifetime of a device and hence doesn't need any locks.
+	 */
 	int num_encoder;
+	/**
+	 * @encoder_list:
+	 *
+	 * List of encoder objects linked with &drm_encoder.head. This is
+	 * invariant over the lifetime of a device and hence doesn't need any
+	 * locks.
+	 */
 	struct list_head encoder_list;
 
-	/*
-	 * Track # of overlay planes separately from # of total planes.  By
-	 * default we only advertise overlay planes to userspace; if userspace
-	 * sets the "universal plane" capability bit, we'll go ahead and
-	 * expose all planes.
+	/**
+	 * @num_overlay_plane:
+	 *
+	 * Number of overlay planes on this device, excluding primary and cursor
+	 * planes.
+	 *
+	 * Track number of overlay planes separately from number of total
+	 * planes.  By default we only advertise overlay planes to userspace; if
+	 * userspace sets the "universal plane" capability bit, we'll go ahead
+	 * and expose all planes. This is invariant over the lifetime of a
+	 * device and hence doesn't need any locks.
 	 */
 	int num_overlay_plane;
+	/**
+	 * @num_total_plane:
+	 *
+	 * Number of universal (i.e. with primary/curso) planes on this device.
+	 * This is invariant over the lifetime of a device and hence doesn't
+	 * need any locks.
+	 */
 	int num_total_plane;
+	/**
+	 * @plane_list:
+	 *
+	 * List of plane objects linked with &drm_plane.head. This is invariant
+	 * over the lifetime of a device and hence doesn't need any locks.
+	 */
 	struct list_head plane_list;
 
+	/**
+	 * @num_crtc:
+	 *
+	 * Number of CRTCs on this device linked with &drm_crtc.head. This is invariant over the lifetime
+	 * of a device and hence doesn't need any locks.
+	 */
 	int num_crtc;
+	/**
+	 * @crtc_list:
+	 *
+	 * List of CRTC objects linked with &drm_crtc.head. This is invariant
+	 * over the lifetime of a device and hence doesn't need any locks.
+	 */
 	struct list_head crtc_list;
 
+	/**
+	 * @property_list:
+	 *
+	 * List of property type objects linked with &drm_property.head. This is
+	 * invariant over the lifetime of a device and hence doesn't need any
+	 * locks.
+	 */
 	struct list_head property_list;
 
 	int min_width, min_height;
@@ -413,10 +493,24 @@ struct drm_mode_config {
 	bool delayed_event;
 	struct delayed_work output_poll_work;
 
+	/**
+	 * @blob_lock:
+	 *
+	 * Mutex for blob property allocation and management, protects
+	 * @property_blob_list and &drm_file.blobs.
+	 */
 	struct mutex blob_lock;
 
-	/* pointers to standard properties */
+	/**
+	 * @property_blob_list:
+	 *
+	 * List of all the blob property objects linked with
+	 * &drm_property_blob.head. Protected by @blob_lock.
+	 */
 	struct list_head property_blob_list;
+
+	/* pointers to standard properties */
+
 	/**
 	 * @edid_property: Default connector property to hold the EDID of the
 	 * currently connected sink, if any.

include/drm/drm_of.h

@@ -11,18 +11,18 @@ struct drm_encoder;
 struct device_node;
 
 #ifdef CONFIG_OF
-extern uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
-					   struct device_node *port);
-extern void drm_of_component_match_add(struct device *master,
-				       struct component_match **matchptr,
-				       int (*compare)(struct device *, void *),
-				       struct device_node *node);
-extern int drm_of_component_probe(struct device *dev,
-				  int (*compare_of)(struct device *, void *),
-				  const struct component_master_ops *m_ops);
-extern int drm_of_encoder_active_endpoint(struct device_node *node,
-					  struct drm_encoder *encoder,
-					  struct of_endpoint *endpoint);
+uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
+				    struct device_node *port);
+void drm_of_component_match_add(struct device *master,
+				struct component_match **matchptr,
+				int (*compare)(struct device *, void *),
+				struct device_node *node);
+int drm_of_component_probe(struct device *dev,
+			   int (*compare_of)(struct device *, void *),
+			   const struct component_master_ops *m_ops);
+int drm_of_encoder_active_endpoint(struct device_node *node,
+				   struct drm_encoder *encoder,
+				   struct of_endpoint *endpoint);
 #else
 static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
 						  struct device_node *port)

include/drm/drm_pci.h

@@ -39,17 +39,17 @@ struct drm_device;
 struct drm_driver;
 struct drm_master;
 
-extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size,
-					    size_t align);
-extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah);
+struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size,
+				     size_t align);
+void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah);
 
-extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
-extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
+int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
+void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
 #ifdef CONFIG_PCI
-extern int drm_get_pci_dev(struct pci_dev *pdev,
-			   const struct pci_device_id *ent,
-			   struct drm_driver *driver);
-extern int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master);
+int drm_get_pci_dev(struct pci_dev *pdev,
+		    const struct pci_device_id *ent,
+		    struct drm_driver *driver);
+int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master);
 #else
 static inline int drm_get_pci_dev(struct pci_dev *pdev,
 				  const struct pci_device_id *ent,
@@ -69,7 +69,7 @@ static inline int drm_pci_set_busid(struct drm_device *dev,
 #define DRM_PCIE_SPEED_50 2
 #define DRM_PCIE_SPEED_80 4
 
-extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
-extern int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw);
+int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
+int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw);
 
 #endif /* _DRM_PCI_H_ */

include/drm/drm_plane.h

@@ -29,6 +29,7 @@
 
 struct drm_crtc;
 struct drm_printer;
+struct drm_modeset_acquire_ctx;
 
 /**
  * struct drm_plane_state - mutable plane state
@@ -184,7 +185,8 @@ struct drm_plane_funcs {
 			    int crtc_x, int crtc_y,
 			    unsigned int crtc_w, unsigned int crtc_h,
 			    uint32_t src_x, uint32_t src_y,
-			    uint32_t src_w, uint32_t src_h);
+			    uint32_t src_w, uint32_t src_h,
+			    struct drm_modeset_acquire_ctx *ctx);
 
 	/**
 	 * @disable_plane:
@@ -201,7 +203,8 @@ struct drm_plane_funcs {
 	 *
 	 * 0 on success or a negative error code on failure.
 	 */
-	int (*disable_plane)(struct drm_plane *plane);
+	int (*disable_plane)(struct drm_plane *plane,
+			     struct drm_modeset_acquire_ctx *ctx);
 
 	/**
 	 * @destroy:
@@ -456,7 +459,6 @@ enum drm_plane_type {
  * @funcs: helper functions
  * @properties: property tracking for this plane
  * @type: type of plane (overlay, primary, cursor)
- * @state: current atomic state for this plane
  * @zpos_property: zpos property for this plane
  * @rotation_property: rotation property for this plane
  * @helper_private: mid-layer private data
@@ -473,6 +475,8 @@ struct drm_plane {
 	 * Protects modeset plane state, together with the &drm_crtc.mutex of
 	 * CRTC this plane is linked to (when active, getting activated or
 	 * getting disabled).
+	 *
+	 * For atomic drivers specifically this protects @state.
 	 */
 	struct drm_modeset_lock mutex;
 
@@ -502,6 +506,19 @@ struct drm_plane {
 
 	const struct drm_plane_helper_funcs *helper_private;
 
+	/**
+	 * @state:
+	 *
+	 * Current atomic state for this plane.
+	 *
+	 * This is protected by @mutex. Note that nonblocking atomic commits
+	 * access the current plane state without taking locks. Either by going
+	 * through the &struct drm_atomic_state pointers, see
+	 * for_each_plane_in_state(), for_each_oldnew_plane_in_state(),
+	 * for_each_old_plane_in_state() and for_each_new_plane_in_state(). Or
+	 * through careful ordering of atomic commit operations as implemented
+	 * in the atomic helpers, see &struct drm_crtc_commit.
+	 */
 	struct drm_plane_state *state;
 
 	struct drm_property *zpos_property;
@@ -510,7 +527,7 @@ struct drm_plane {
 
 #define obj_to_plane(x) container_of(x, struct drm_plane, base)
 
-extern __printf(8, 9)
+__printf(8, 9)
 int drm_universal_plane_init(struct drm_device *dev,
 			     struct drm_plane *plane,
 			     uint32_t possible_crtcs,
@@ -519,13 +536,13 @@ int drm_universal_plane_init(struct drm_device *dev,
 			     unsigned int format_count,
 			     enum drm_plane_type type,
 			     const char *name, ...);
-extern int drm_plane_init(struct drm_device *dev,
-			  struct drm_plane *plane,
-			  uint32_t possible_crtcs,
-			  const struct drm_plane_funcs *funcs,
-			  const uint32_t *formats, unsigned int format_count,
-			  bool is_primary);
-extern void drm_plane_cleanup(struct drm_plane *plane);
+int drm_plane_init(struct drm_device *dev,
+		   struct drm_plane *plane,
+		   uint32_t possible_crtcs,
+		   const struct drm_plane_funcs *funcs,
+		   const uint32_t *formats, unsigned int format_count,
+		   bool is_primary);
+void drm_plane_cleanup(struct drm_plane *plane);
 
 /**
  * drm_plane_index - find the index of a registered plane
@@ -538,8 +555,8 @@ static inline unsigned int drm_plane_index(struct drm_plane *plane)
 {
 	return plane->index;
 }
-extern struct drm_plane * drm_plane_from_index(struct drm_device *dev, int idx);
-extern void drm_plane_force_disable(struct drm_plane *plane);
+struct drm_plane * drm_plane_from_index(struct drm_device *dev, int idx);
+void drm_plane_force_disable(struct drm_plane *plane);
 
 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
 				       struct drm_property *property,

include/drm/drm_plane_helper.h

@@ -61,8 +61,10 @@ int drm_primary_helper_update(struct drm_plane *plane,
 			      int crtc_x, int crtc_y,
 			      unsigned int crtc_w, unsigned int crtc_h,
 			      uint32_t src_x, uint32_t src_y,
-			      uint32_t src_w, uint32_t src_h);
-int drm_primary_helper_disable(struct drm_plane *plane);
+			      uint32_t src_w, uint32_t src_h,
+			      struct drm_modeset_acquire_ctx *ctx);
+int drm_primary_helper_disable(struct drm_plane *plane,
+			       struct drm_modeset_acquire_ctx *ctx);
 void drm_primary_helper_destroy(struct drm_plane *plane);
 extern const struct drm_plane_funcs drm_primary_helper_funcs;
 

include/drm/drm_prime.h

@@ -57,24 +57,24 @@ struct drm_device;
 struct drm_gem_object;
 struct drm_file;
 
-extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
-					    struct drm_gem_object *obj,
-					    int flags);
-extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
-		struct drm_file *file_priv, uint32_t handle, uint32_t flags,
-		int *prime_fd);
-extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
-		struct dma_buf *dma_buf);
-extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
-		struct drm_file *file_priv, int prime_fd, uint32_t *handle);
+struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
+				     struct drm_gem_object *obj,
+				     int flags);
+int drm_gem_prime_handle_to_fd(struct drm_device *dev,
+			       struct drm_file *file_priv, uint32_t handle, uint32_t flags,
+			       int *prime_fd);
+struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
+					    struct dma_buf *dma_buf);
+int drm_gem_prime_fd_to_handle(struct drm_device *dev,
+			       struct drm_file *file_priv, int prime_fd, uint32_t *handle);
 struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev,
 				      struct dma_buf_export_info *exp_info);
-extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
+void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
 
-extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
-					    dma_addr_t *addrs, int max_pages);
-extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages);
-extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
+int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
+				     dma_addr_t *addrs, int max_pages);
+struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages);
+void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
 
 
 #endif /* __DRM_PRIME_H__ */

include/drm/drm_scdc_helper.h

@@ -129,6 +129,8 @@ static inline int drm_scdc_writeb(struct i2c_adapter *adapter, u8 offset,
 	return drm_scdc_write(adapter, offset, &value, sizeof(value));
 }
 
+bool drm_scdc_get_scrambling_status(struct i2c_adapter *adapter);
+
 /**
  * drm_scdc_set_scrambling - enable scrambling
  * @adapter: I2C adapter for DDC channel

include/drm/drm_simple_kms_helper.h

@@ -72,7 +72,7 @@ struct drm_simple_display_pipe_funcs {
 	 * the hardware lacks vblank support entirely.
 	 */
 	void (*update)(struct drm_simple_display_pipe *pipe,
-		       struct drm_plane_state *plane_state);
+		       struct drm_plane_state *old_plane_state);
 
 	/**
 	 * @prepare_fb:

include/drm/drm_sysfs.h

@@ -6,7 +6,7 @@
  * don't want to include the full drmP.h file.
  */
 
-extern int drm_class_device_register(struct device *dev);
-extern void drm_class_device_unregister(struct device *dev);
+int drm_class_device_register(struct device *dev);
+void drm_class_device_unregister(struct device *dev);
 
 #endif

include/drm/tinydrm/tinydrm.h

@@ -58,8 +58,7 @@ pipe_to_tinydrm(struct drm_simple_display_pipe *pipe)
 	.gem_prime_mmap		= drm_gem_cma_prime_mmap, \
 	.dumb_create		= drm_gem_cma_dumb_create, \
 	.dumb_map_offset	= drm_gem_cma_dumb_map_offset, \
-	.dumb_destroy		= drm_gem_dumb_destroy, \
-	.fops			= &tinydrm_fops
+	.dumb_destroy		= drm_gem_dumb_destroy
 
 /**
  * TINYDRM_MODE - tinydrm display mode
@@ -84,7 +83,6 @@ pipe_to_tinydrm(struct drm_simple_display_pipe *pipe)
 	.type = DRM_MODE_TYPE_DRIVER, \
 	.clock = 1 /* pass validation */
 
-extern const struct file_operations tinydrm_fops;
 void tinydrm_lastclose(struct drm_device *drm);
 void tinydrm_gem_cma_free_object(struct drm_gem_object *gem_obj);
 struct drm_gem_object *