Merge tag 'drm-next-2022-01-07' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Highlights are support for privacy screens found in new laptops, a
  bunch of nomodeset refactoring, and i915 enables ADL-P systems by
  default, while starting to add RPL-S support.

  vmwgfx adds GEM and support for OpenGL 4.3 features in userspace.

  Lots of internal refactorings around dma reservations, and lots of
  driver refactoring as well.

  Summary:

  core:
   - add privacy screen support
   - move nomodeset option into drm subsystem
   - clean up nomodeset handling in drivers
   - make drm_irq.c legacy
   - fix stack_depot name conflicts
   - remove DMA_BUF_SET_NAME ioctl restrictions
   - sysfs: send hotplug event
   - replace several DRM_* logging macros with drm_*
   - move hashtable to legacy code
   - add error return from gem_create_object
   - cma-helper: improve interfaces, drop CONFIG_DRM_KMS_CMA_HELPER
   - kernel.h related include cleanups
   - support XRGB2101010 source buffers

  ttm:
   - don't include drm hashtable
   - stop pruning fences after wait
   - documentation updates

  dma-buf:
   - add dma_resv selftest
   - add debugfs helpers
   - remove dma_resv_get_excl_unlocked
   - documentation
   - make fences mandatory in dma_resv_add_excl_fence

  dp:
   - add link training delay helpers

  gem:
   - link shmem/cma helpers into separate modules
   - use dma_resv iteratior
   - import dma-buf namespace into gem helper modules

  scheduler:
   - fence grab fix
   - lockdep fixes

  bridge:
   - switch to managed MIPI DSI helpers
   - register and attach during probe fixes
   - convert to YAML in several places.

  panel:
   - add bunch of new panesl

  simpledrm:
   - support FB_DAMAGE_CLIPS
   - support virtual screen sizes
   - add Apple M1 support

  amdgpu:
   - enable seamless boot for DCN 3.01
   - runtime PM fixes
   - use drm_kms_helper_connector_hotplug_event
   - get all fences at once
   - use generic drm fb helpers
   - PSR/DPCD/LTTPR/DSC/PM/RAS/OLED/SRIOV fixes
   - add smart trace buffer (STB) for supported GPUs
   - display debugfs entries
   - new SMU debug option
   - Documentation update

  amdkfd:
   - IP discovery enumeration refactor
   - interface between driver fixes
   - SVM fixes
   - kfd uapi header to define some sysfs bitfields.

  i915:
   - support VESA panel backlights
   - enable ADL-P by default
   - add eDP privacy screen support
   - add Raptor Lake S (RPL-S) support
   - DG2 page table support
   - lots of GuC/HuC fw refactoring
   - refactored i915->gt interfaces
   - CD clock squashing support
   - enable 10-bit gamma support
   - update ADL-P DMC fw to v2.14
   - enable runtime PM autosuspend by default
   - ADL-P DSI support
   - per-lane DP drive settings for ICL+
   - add support for pipe C/D DMC firmware
   - Atomic gamma LUT updates
   - remove CCS FB stride restrictions on ADL-P
   - VRR platform support for display 11
   - add support for display audio codec keepalive
   - lots of display refactoring
   - fix runtime PM handling during PXP suspend
   - improved eviction performance with async TTM moves
   - async VMA unbinding improvements
   - VMA locking refactoring
   - improved error capture robustness
   - use per device iommu checks
   - drop bits stealing from i915_sw_fence function ptr
   - remove dma_resv_prune
   - add IC cache invalidation on DG2

  nouveau:
   - crc fixes
   - validate LUTs in atomic check
   - set HDMI AVI RGB quant to full

  tegra:
   - buffer objects reworks for dma-buf compat
   - NVDEC driver uAPI support
   - power management improvements

  etnaviv:
   - IOMMU enabled system support
   - fix > 4GB command buffer mapping
   - close a DoS vector
   - fix spurious GPU resets

  ast:
   - fix i2c initialization

  rcar-du:
   - DSI output support

  exynos:
   - replace legacy gpio interface
   - implement generic GEM object mmap

  msm:
   - dpu plane state cleanup in prep for multirect
   - dpu debugfs cleanups
   - dp support for sc7280
   - a506 support
   - removal of struct_mutex
   - remove old eDP sub-driver

  anx7625:
   - support MIPI DSI input
   - support HDMI audio
   - fix reading EDID

  lvds:
   - fix bridge DT bindings

  megachips:
   - probe both bridges before registering

  dw-hdmi:
   - allow interlace on bridge

  ps8640:
   - enable runtime PM
   - support aux-bus

  tx358768:
   - enable reference clock
   - add pulse mode support

  ti-sn65dsi86:
   - use regmap bulk write
   - add PWM support

  etnaviv:
   - get all fences at once

  gma500:
   - gem object cleanups

  kmb:
   - enable fb console

  radeon:
   - use dma_resv_wait_timeout

  rockchip:
   - add DSP hold timeout
   - suspend/resume fixes
   - PLL clock fixes
   - implement mmap in GEM object functions
   - use generic fbdev emulation

  sun4i:
   - use CMA helpers without vmap support

  vc4:
   - fix HDMI-CEC hang with display is off
   - power on HDMI controller while disabling
   - support 4K@60Hz modes
   - support 10-bit YUV 4:2:0 output

  vmwgfx:
   - fix leak on probe errors
   - fail probing on broken hosts
   - new placement for MOB page tables
   - hide internal BOs from userspace
   - implement GEM support
   - implement GL 4.3 support

  virtio:
   - overflow fixes

  xen:
   - implement mmap as GEM object function

  omapdrm:
   - fix scatterlist export
   - support virtual planes

  mediatek:
   - MT8192 support
   - CMDQ refinement"

* tag 'drm-next-2022-01-07' of git://anongit.freedesktop.org/drm/drm: (1241 commits)
  drm/amdgpu: no DC support for headless chips
  drm/amd/display: fix dereference before NULL check
  drm/amdgpu: always reset the asic in suspend (v2)
  drm/amdgpu: put SMU into proper state on runpm suspending for BOCO capable platform
  drm/amd/display: Fix the uninitialized variable in enable_stream_features()
  drm/amdgpu: fix runpm documentation
  amdgpu/pm: Make sysfs pm attributes as read-only for VFs
  drm/amdgpu: save error count in RAS poison handler
  drm/amdgpu: drop redundant semicolon
  drm/amd/display: get and restore link res map
  drm/amd/display: support dynamic HPO DP link encoder allocation
  drm/amd/display: access hpo dp link encoder only through link resource
  drm/amd/display: populate link res in both detection and validation
  drm/amd/display: define link res and make it accessible to all link interfaces
  drm/amd/display: 3.2.167
  drm/amd/display: [FW Promotion] Release 0.0.98
  drm/amd/display: Undo ODM combine
  drm/amd/display: Add reg defs for DCN303
  drm/amd/display: Changed pipe split policy to allow for multi-display pipe split
  drm/amd/display: Set optimize_pwr_state for DCN31
  ...

1 files changed, 204 insertions, 1 deletions

diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 52e20c68813b..a50c82bc2b2f 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -28,6 +28,7 @@
 #include <drm/drm_print.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_file.h>
+#include <drm/drm_privacy_screen_consumer.h>
 #include <drm/drm_sysfs.h>
 
 #include <linux/uaccess.h>
@@ -462,6 +463,11 @@ void drm_connector_cleanup(struct drm_connector *connector)
 		    DRM_CONNECTOR_REGISTERED))
 		drm_connector_unregister(connector);
 
+	if (connector->privacy_screen) {
+		drm_privacy_screen_put(connector->privacy_screen);
+		connector->privacy_screen = NULL;
+	}
+
 	if (connector->tile_group) {
 		drm_mode_put_tile_group(dev, connector->tile_group);
 		connector->tile_group = NULL;
@@ -541,7 +547,11 @@ int drm_connector_register(struct drm_connector *connector)
 	connector->registration_state = DRM_CONNECTOR_REGISTERED;
 
 	/* Let userspace know we have a new connector */
-	drm_sysfs_hotplug_event(connector->dev);
+	drm_sysfs_connector_hotplug_event(connector);
+
+	if (connector->privacy_screen)
+		drm_privacy_screen_register_notifier(connector->privacy_screen,
+					   &connector->privacy_screen_notifier);
 
 	mutex_lock(&connector_list_lock);
 	list_add_tail(&connector->global_connector_list_entry, &connector_list);
@@ -578,6 +588,11 @@ void drm_connector_unregister(struct drm_connector *connector)
 	list_del_init(&connector->global_connector_list_entry);
 	mutex_unlock(&connector_list_lock);
 
+	if (connector->privacy_screen)
+		drm_privacy_screen_unregister_notifier(
+					connector->privacy_screen,
+					&connector->privacy_screen_notifier);
+
 	if (connector->funcs->early_unregister)
 		connector->funcs->early_unregister(connector);
 
@@ -1271,6 +1286,46 @@ static const struct drm_prop_enum_list dp_colorspaces[] = {
  *	For DVI-I and TVout there is also a matching property "select subconnector"
  *	allowing to switch between signal types.
  *	DP subconnector corresponds to a downstream port.
+ *
+ * privacy-screen sw-state, privacy-screen hw-state:
+ *	These 2 optional properties can be used to query the state of the
+ *	electronic privacy screen that is available on some displays; and in
+ *	some cases also control the state. If a driver implements these
+ *	properties then both properties must be present.
+ *
+ *	"privacy-screen hw-state" is read-only and reflects the actual state
+ *	of the privacy-screen, possible values: "Enabled", "Disabled,
+ *	"Enabled-locked", "Disabled-locked". The locked states indicate
+ *	that the state cannot be changed through the DRM API. E.g. there
+ *	might be devices where the firmware-setup options, or a hardware
+ *	slider-switch, offer always on / off modes.
+ *
+ *	"privacy-screen sw-state" can be set to change the privacy-screen state
+ *	when not locked. In this case the driver must update the hw-state
+ *	property to reflect the new state on completion of the commit of the
+ *	sw-state property. Setting the sw-state property when the hw-state is
+ *	locked must be interpreted by the driver as a request to change the
+ *	state to the set state when the hw-state becomes unlocked. E.g. if
+ *	"privacy-screen hw-state" is "Enabled-locked" and the sw-state
+ *	gets set to "Disabled" followed by the user unlocking the state by
+ *	changing the slider-switch position, then the driver must set the
+ *	state to "Disabled" upon receiving the unlock event.
+ *
+ *	In some cases the privacy-screen's actual state might change outside of
+ *	control of the DRM code. E.g. there might be a firmware handled hotkey
+ *	which toggles the actual state, or the actual state might be changed
+ *	through another userspace API such as writing /proc/acpi/ibm/lcdshadow.
+ *	In this case the driver must update both the hw-state and the sw-state
+ *	to reflect the new value, overwriting any pending state requests in the
+ *	sw-state. Any pending sw-state requests are thus discarded.
+ *
+ *	Note that the ability for the state to change outside of control of
+ *	the DRM master process means that userspace must not cache the value
+ *	of the sw-state. Caching the sw-state value and including it in later
+ *	atomic commits may lead to overriding a state change done through e.g.
+ *	a firmware handled hotkey. Therefor userspace must not include the
+ *	privacy-screen sw-state in an atomic commit unless it wants to change
+ *	its value.
  */
 
 int drm_connector_create_standard_properties(struct drm_device *dev)
@@ -2365,6 +2420,154 @@ int drm_connector_set_panel_orientation_with_quirk(
 }
 EXPORT_SYMBOL(drm_connector_set_panel_orientation_with_quirk);
 
+static const struct drm_prop_enum_list privacy_screen_enum[] = {
+	{ PRIVACY_SCREEN_DISABLED,		"Disabled" },
+	{ PRIVACY_SCREEN_ENABLED,		"Enabled" },
+	{ PRIVACY_SCREEN_DISABLED_LOCKED,	"Disabled-locked" },
+	{ PRIVACY_SCREEN_ENABLED_LOCKED,	"Enabled-locked" },
+};
+
+/**
+ * drm_connector_create_privacy_screen_properties - create the drm connecter's
+ *    privacy-screen properties.
+ * @connector: connector for which to create the privacy-screen properties
+ *
+ * This function creates the "privacy-screen sw-state" and "privacy-screen
+ * hw-state" properties for the connector. They are not attached.
+ */
+void
+drm_connector_create_privacy_screen_properties(struct drm_connector *connector)
+{
+	if (connector->privacy_screen_sw_state_property)
+		return;
+
+	/* Note sw-state only supports the first 2 values of the enum */
+	connector->privacy_screen_sw_state_property =
+		drm_property_create_enum(connector->dev, DRM_MODE_PROP_ENUM,
+				"privacy-screen sw-state",
+				privacy_screen_enum, 2);
+
+	connector->privacy_screen_hw_state_property =
+		drm_property_create_enum(connector->dev,
+				DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_ENUM,
+				"privacy-screen hw-state",
+				privacy_screen_enum,
+				ARRAY_SIZE(privacy_screen_enum));
+}
+EXPORT_SYMBOL(drm_connector_create_privacy_screen_properties);
+
+/**
+ * drm_connector_attach_privacy_screen_properties - attach the drm connecter's
+ *    privacy-screen properties.
+ * @connector: connector on which to attach the privacy-screen properties
+ *
+ * This function attaches the "privacy-screen sw-state" and "privacy-screen
+ * hw-state" properties to the connector. The initial state of both is set
+ * to "Disabled".
+ */
+void
+drm_connector_attach_privacy_screen_properties(struct drm_connector *connector)
+{
+	if (!connector->privacy_screen_sw_state_property)
+		return;
+
+	drm_object_attach_property(&connector->base,
+				   connector->privacy_screen_sw_state_property,
+				   PRIVACY_SCREEN_DISABLED);
+
+	drm_object_attach_property(&connector->base,
+				   connector->privacy_screen_hw_state_property,
+				   PRIVACY_SCREEN_DISABLED);
+}
+EXPORT_SYMBOL(drm_connector_attach_privacy_screen_properties);
+
+static void drm_connector_update_privacy_screen_properties(
+	struct drm_connector *connector, bool set_sw_state)
+{
+	enum drm_privacy_screen_status sw_state, hw_state;
+
+	drm_privacy_screen_get_state(connector->privacy_screen,
+				     &sw_state, &hw_state);
+
+	if (set_sw_state)
+		connector->state->privacy_screen_sw_state = sw_state;
+	drm_object_property_set_value(&connector->base,
+			connector->privacy_screen_hw_state_property, hw_state);
+}
+
+static int drm_connector_privacy_screen_notifier(
+	struct notifier_block *nb, unsigned long action, void *data)
+{
+	struct drm_connector *connector =
+		container_of(nb, struct drm_connector, privacy_screen_notifier);
+	struct drm_device *dev = connector->dev;
+
+	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+	drm_connector_update_privacy_screen_properties(connector, true);
+	drm_modeset_unlock(&dev->mode_config.connection_mutex);
+
+	drm_sysfs_connector_status_event(connector,
+				connector->privacy_screen_sw_state_property);
+	drm_sysfs_connector_status_event(connector,
+				connector->privacy_screen_hw_state_property);
+
+	return NOTIFY_DONE;
+}
+
+/**
+ * drm_connector_attach_privacy_screen_provider - attach a privacy-screen to
+ *    the connector
+ * @connector: connector to attach the privacy-screen to
+ * @priv: drm_privacy_screen to attach
+ *
+ * Create and attach the standard privacy-screen properties and register
+ * a generic notifier for generating sysfs-connector-status-events
+ * on external changes to the privacy-screen status.
+ * This function takes ownership of the passed in drm_privacy_screen and will
+ * call drm_privacy_screen_put() on it when the connector is destroyed.
+ */
+void drm_connector_attach_privacy_screen_provider(
+	struct drm_connector *connector, struct drm_privacy_screen *priv)
+{
+	connector->privacy_screen = priv;
+	connector->privacy_screen_notifier.notifier_call =
+		drm_connector_privacy_screen_notifier;
+
+	drm_connector_create_privacy_screen_properties(connector);
+	drm_connector_update_privacy_screen_properties(connector, true);
+	drm_connector_attach_privacy_screen_properties(connector);
+}
+EXPORT_SYMBOL(drm_connector_attach_privacy_screen_provider);
+
+/**
+ * drm_connector_update_privacy_screen - update connector's privacy-screen sw-state
+ * @connector_state: connector-state to update the privacy-screen for
+ *
+ * This function calls drm_privacy_screen_set_sw_state() on the connector's
+ * privacy-screen.
+ *
+ * If the connector has no privacy-screen, then this is a no-op.
+ */
+void drm_connector_update_privacy_screen(const struct drm_connector_state *connector_state)
+{
+	struct drm_connector *connector = connector_state->connector;
+	int ret;
+
+	if (!connector->privacy_screen)
+		return;
+
+	ret = drm_privacy_screen_set_sw_state(connector->privacy_screen,
+					      connector_state->privacy_screen_sw_state);
+	if (ret) {
+		drm_err(connector->dev, "Error updating privacy-screen sw_state\n");
+		return;
+	}
+
+	/* The hw_state property value may have changed, update it. */
+	drm_connector_update_privacy_screen_properties(connector, false);
+}
+EXPORT_SYMBOL(drm_connector_update_privacy_screen);
+
 int drm_connector_set_obj_prop(struct drm_mode_object *obj,
 				    struct drm_property *property,
 				    uint64_t value)