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, 187 insertions, 0 deletions

diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
new file mode 100644
index 000000000..3ec25d3f0
--- /dev/null
+++ b/net/wireless/sysfs.c
@@ -0,0 +1,187 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * This file provides /sys/class/ieee80211/<wiphy name>/
+ * and some default attributes.
+ *
+ * Copyright 2005-2006	Jiri Benc <jbenc@suse.cz>
+ * Copyright 2006	Johannes Berg <johannes@sipsolutions.net>
+ * Copyright (C) 2020-2021, 2023-2024 Intel Corporation
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/nl80211.h>
+#include <linux/rtnetlink.h>
+#include <net/cfg80211.h>
+#include "sysfs.h"
+#include "core.h"
+#include "rdev-ops.h"
+
+static inline struct cfg80211_registered_device *dev_to_rdev(
+	struct device *dev)
+{
+	return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
+}
+
+#define SHOW_FMT(name, fmt, member)					\
+static ssize_t name ## _show(struct device *dev,			\
+			      struct device_attribute *attr,		\
+			      char *buf)				\
+{									\
+	return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);	\
+}									\
+static DEVICE_ATTR_RO(name)
+
+SHOW_FMT(index, "%d", wiphy_idx);
+SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
+SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);
+
+static ssize_t name_show(struct device *dev,
+			 struct device_attribute *attr,
+			 char *buf)
+{
+	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
+
+	return sprintf(buf, "%s\n", wiphy_name(wiphy));
+}
+static DEVICE_ATTR_RO(name);
+
+static ssize_t addresses_show(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
+	char *start = buf;
+	int i;
+
+	if (!wiphy->addresses)
+		return sprintf(buf, "%pM\n", wiphy->perm_addr);
+
+	for (i = 0; i < wiphy->n_addresses; i++)
+		buf += sprintf(buf, "%pM\n", wiphy->addresses[i].addr);
+
+	return buf - start;
+}
+static DEVICE_ATTR_RO(addresses);
+
+static struct attribute *ieee80211_attrs[] = {
+	&dev_attr_index.attr,
+	&dev_attr_macaddress.attr,
+	&dev_attr_address_mask.attr,
+	&dev_attr_addresses.attr,
+	&dev_attr_name.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(ieee80211);
+
+static void wiphy_dev_release(struct device *dev)
+{
+	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
+
+	cfg80211_dev_free(rdev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
+{
+	struct wireless_dev *wdev;
+
+	list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
+		cfg80211_leave(rdev, wdev, -1);
+}
+
+static int wiphy_suspend(struct device *dev)
+{
+	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
+	int ret = 0;
+
+	rdev->suspend_at = ktime_get_boottime_seconds();
+
+	rtnl_lock();
+	if (!rdev->wiphy.registered)
+		goto out_unlock_rtnl;
+
+	if (rdev->wiphy.wowlan_config) {
+		scoped_guard(wiphy, &rdev->wiphy) {
+			cfg80211_process_wiphy_works(rdev, NULL);
+			if (rdev->ops->suspend)
+				ret = rdev_suspend(rdev,
+						   rdev->wiphy.wowlan_config);
+			if (ret <= 0)
+				goto out_unlock_rtnl;
+		}
+	}
+
+	/* Driver refused to configure wowlan (ret = 1) or no wowlan */
+
+	cfg80211_leave_all(rdev);
+	scoped_guard(wiphy, &rdev->wiphy) {
+		cfg80211_process_rdev_events(rdev);
+		cfg80211_process_wiphy_works(rdev, NULL);
+		if (rdev->ops->suspend)
+			ret = rdev_suspend(rdev, NULL);
+	}
+out_unlock_rtnl:
+	if (ret == 0)
+		rdev->suspended = true;
+	rtnl_unlock();
+
+	return ret;
+}
+
+static int wiphy_resume(struct device *dev)
+{
+	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
+	int ret = 0;
+
+	/* Age scan results with time spent in suspend */
+	cfg80211_bss_age(rdev, ktime_get_boottime_seconds() - rdev->suspend_at);
+
+	rtnl_lock();
+	wiphy_lock(&rdev->wiphy);
+	if (rdev->wiphy.registered && rdev->ops->resume)
+		ret = rdev_resume(rdev);
+	rdev->suspended = false;
+	queue_work(system_dfl_wq, &rdev->wiphy_work);
+	wiphy_unlock(&rdev->wiphy);
+
+	if (ret)
+		cfg80211_shutdown_all_interfaces(&rdev->wiphy);
+
+	rtnl_unlock();
+
+	return ret;
+}
+
+static SIMPLE_DEV_PM_OPS(wiphy_pm_ops, wiphy_suspend, wiphy_resume);
+#define WIPHY_PM_OPS (&wiphy_pm_ops)
+#else
+#define WIPHY_PM_OPS NULL
+#endif
+
+static const struct ns_common *wiphy_namespace(const struct device *d)
+{
+	struct wiphy *wiphy = container_of(d, struct wiphy, dev);
+
+	return to_ns_common(wiphy_net(wiphy));
+}
+
+struct class ieee80211_class = {
+	.name = "ieee80211",
+	.dev_release = wiphy_dev_release,
+	.dev_groups = ieee80211_groups,
+	.pm = WIPHY_PM_OPS,
+	.ns_type = &net_ns_type_operations,
+	.namespace = wiphy_namespace,
+};
+
+int wiphy_sysfs_init(void)
+{
+	return class_register(&ieee80211_class);
+}
+
+void wiphy_sysfs_exit(void)
+{
+	class_unregister(&ieee80211_class);
+}