Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 146 insertions, 0 deletions

diff --git a/lib/kunit/fwnode.c b/lib/kunit/fwnode.c
new file mode 100644
index 000000000..a58ce0984
--- /dev/null
+++ b/lib/kunit/fwnode.c
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) Qualcomm Technologies, Inc. and/or its subsidiaries
+ */
+
+#include <kunit/fwnode.h>
+#include <kunit/test.h>
+
+#include <linux/fwnode.h>
+#include <linux/property.h>
+
+KUNIT_DEFINE_ACTION_WRAPPER(fwnode_remove_software_node_wrapper,
+			    fwnode_remove_software_node,
+			    struct fwnode_handle *);
+
+/**
+ * kunit_fwnode_create_software_node() - Create a kunit-managed software node
+ * @test: Test context
+ * @properties: Properties to use to create the new software node
+ * @parent: Parent of this software node
+ *
+ * Create a test-managed software node and return its firmware node handle.
+ * The software node is removed after the test case completes.
+ *
+ * Returns:
+ * Firmware node handle of the newly created software node or IS_ERR() on
+ * failure.
+ */
+struct fwnode_handle *
+kunit_fwnode_create_software_node(struct kunit *test,
+				  const struct property_entry *properties,
+				  const struct fwnode_handle *parent)
+{
+	struct fwnode_handle *fwnode;
+	int ret;
+
+	fwnode = fwnode_create_software_node(properties, parent);
+	if (IS_ERR(fwnode))
+		return fwnode;
+
+	ret = kunit_add_action_or_reset(test, fwnode_remove_software_node_wrapper,
+					fwnode);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return fwnode;
+}
+EXPORT_SYMBOL_GPL(kunit_fwnode_create_software_node);
+
+KUNIT_DEFINE_ACTION_WRAPPER(software_node_unregister_wrapper,
+			    software_node_unregister,
+			    const struct software_node *);
+
+/**
+ * kunit_software_node_register() - Register a kunit-managed software node
+ * @test: Test context
+ * @swnode: Software node to register
+ *
+ * Register a test-managed software node and return its firmware node handle.
+ * The software node is unregistered after the test case completes.
+ *
+ * Returns:
+ * Firmware node handle of the registered software node or IS_ERR() on failure.
+ */
+struct fwnode_handle *
+kunit_software_node_register(struct kunit *test,
+			     const struct software_node *swnode)
+{
+	struct fwnode_handle *fwnode;
+	int ret;
+
+	ret = software_node_register(swnode);
+	if (ret)
+		return ERR_PTR(ret);
+
+	fwnode = software_node_fwnode(swnode);
+	if (WARN_ON(!fwnode))
+		return ERR_PTR(-ENOENT);
+
+	ret = kunit_add_action_or_reset(test, software_node_unregister_wrapper,
+					(void *)swnode);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return fwnode;
+}
+EXPORT_SYMBOL_GPL(kunit_software_node_register);
+
+KUNIT_DEFINE_ACTION_WRAPPER(software_node_unregister_node_group_wrapper,
+			    software_node_unregister_node_group,
+			    const struct software_node *const *);
+
+/**
+ * kunit_software_node_register_node_group() - Register a kunit-managed software node group
+ * @test: Test context
+ * @nodes: Software node group to register
+ *
+ * Register a test-managed software node group. The nodes are unregistered
+ * after the test case completes.
+ *
+ * Returns:
+ * 0 on success, negative error number on failure.
+ */
+int kunit_software_node_register_node_group(struct kunit *test,
+					    const struct software_node *const *nodes)
+{
+	int ret;
+
+	ret = software_node_register_node_group(nodes);
+	if (ret)
+		return ret;
+
+	return kunit_add_action_or_reset(test, software_node_unregister_node_group_wrapper,
+					 (void *)nodes);
+}
+EXPORT_SYMBOL_GPL(kunit_software_node_register_node_group);
+
+KUNIT_DEFINE_ACTION_WRAPPER(device_remove_software_node_wrapper,
+			    device_remove_software_node,
+			    struct device *);
+
+/**
+ * kunit_device_add_software_node() - Assign a kunit-managed software node to a device
+ * @test: Test context
+ * @dev: Device to assign the software node for
+ * @node: The software node to assign
+ *
+ * Make @node the secondary firmware node of @dev. If @dev has no primary
+ * firmware node, @node will become the primary node. The software node will
+ * be automatically removed from @dev when the test case completes.
+ *
+ * Returns:
+ * 0 on success, negative error number on failure.
+ */
+int kunit_device_add_software_node(struct kunit *test, struct device *dev,
+				   const struct software_node *node)
+{
+	int ret;
+
+	ret = device_add_software_node(dev, node);
+	if (ret)
+		return ret;
+
+	return kunit_add_action_or_reset(test, device_remove_software_node_wrapper, dev);
+}
+EXPORT_SYMBOL_GPL(kunit_device_add_software_node);