Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure

1 files changed, 842 insertions, 0 deletions

diff --git a/drivers/mfd/adp5585.c b/drivers/mfd/adp5585.c
new file mode 100644
index 000000000..aad1d734b
--- /dev/null
+++ b/drivers/mfd/adp5585.c
@@ -0,0 +1,842 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Analog Devices ADP5585 I/O expander, PWM controller and keypad controller
+ *
+ * Copyright 2022 NXP
+ * Copyright 2024 Ideas on Board Oy
+ * Copyright 2025 Analog Devices Inc.
+ */
+
+#include <linux/array_size.h>
+#include <linux/bitfield.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/gpio/consumer.h>
+#include <linux/mfd/adp5585.h>
+#include <linux/mfd/core.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/types.h>
+
+enum {
+	ADP5585_DEV_GPIO,
+	ADP5585_DEV_PWM,
+	ADP5585_DEV_INPUT,
+	ADP5585_DEV_MAX
+};
+
+static const struct mfd_cell adp5585_devs[ADP5585_DEV_MAX] = {
+	MFD_CELL_NAME("adp5585-gpio"),
+	MFD_CELL_NAME("adp5585-pwm"),
+	MFD_CELL_NAME("adp5585-keys"),
+};
+
+static const struct mfd_cell adp5589_devs[] = {
+	MFD_CELL_NAME("adp5589-gpio"),
+	MFD_CELL_NAME("adp5589-pwm"),
+	MFD_CELL_NAME("adp5589-keys"),
+};
+
+static const struct regmap_range adp5585_volatile_ranges[] = {
+	regmap_reg_range(ADP5585_ID, ADP5585_GPI_STATUS_B),
+};
+
+static const struct regmap_access_table adp5585_volatile_regs = {
+	.yes_ranges = adp5585_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(adp5585_volatile_ranges),
+};
+
+static const struct regmap_range adp5589_volatile_ranges[] = {
+	regmap_reg_range(ADP5585_ID, ADP5589_GPI_STATUS_C),
+};
+
+static const struct regmap_access_table adp5589_volatile_regs = {
+	.yes_ranges = adp5589_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(adp5589_volatile_ranges),
+};
+
+/*
+ * Chip variants differ in the default configuration of pull-up and pull-down
+ * resistors, and therefore have different default register values:
+ *
+ * - The -00, -01 and -03 variants (collectively referred to as
+ *   ADP5585_REGMAP_00) have pull-up on all GPIO pins by default.
+ * - The -02 variant has no default pull-up or pull-down resistors.
+ * - The -04 variant has default pull-down resistors on all GPIO pins.
+ */
+
+static const u8 adp5585_regmap_defaults_00[ADP5585_MAX_REG + 1] = {
+	/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x18 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x20 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x28 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x38 */ 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const u8 adp5585_regmap_defaults_02[ADP5585_MAX_REG + 1] = {
+	/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc3,
+	/* 0x18 */ 0x03, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x20 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x28 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x38 */ 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const u8 adp5585_regmap_defaults_04[ADP5585_MAX_REG + 1] = {
+	/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55,
+	/* 0x18 */ 0x05, 0x55, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x20 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x28 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x38 */ 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const u8 adp5589_regmap_defaults_00[ADP5589_MAX_REG + 1] = {
+	/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x18 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x20 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x28 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x38 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x48 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const u8 adp5589_regmap_defaults_01[ADP5589_MAX_REG + 1] = {
+	/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x18 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x20 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x28 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x38 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00,
+	/* 0x40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x48 */ 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00,
+};
+
+static const u8 adp5589_regmap_defaults_02[ADP5589_MAX_REG + 1] = {
+	/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x18 */ 0x00, 0x41, 0x01, 0x00, 0x11, 0x04, 0x00, 0x00,
+	/* 0x20 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x28 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x38 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 0x48 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const u8 *adp5585_regmap_defaults[ADP5585_MAX] = {
+	[ADP5585_00] = adp5585_regmap_defaults_00,
+	[ADP5585_01] = adp5585_regmap_defaults_00,
+	[ADP5585_02] = adp5585_regmap_defaults_02,
+	[ADP5585_03] = adp5585_regmap_defaults_00,
+	[ADP5585_04] = adp5585_regmap_defaults_04,
+	[ADP5589_00] = adp5589_regmap_defaults_00,
+	[ADP5589_01] = adp5589_regmap_defaults_01,
+	[ADP5589_02] = adp5589_regmap_defaults_02,
+};
+
+static const struct regmap_config adp5585_regmap_config_template = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = ADP5585_MAX_REG,
+	.volatile_table = &adp5585_volatile_regs,
+	.cache_type = REGCACHE_MAPLE,
+	.num_reg_defaults_raw = ADP5585_MAX_REG + 1,
+};
+
+static const struct regmap_config adp5589_regmap_config_template = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = ADP5589_MAX_REG,
+	.volatile_table = &adp5589_volatile_regs,
+	.cache_type = REGCACHE_MAPLE,
+	.num_reg_defaults_raw = ADP5589_MAX_REG + 1,
+};
+
+static const struct adp5585_regs adp5585_regs = {
+	.ext_cfg = ADP5585_PIN_CONFIG_C,
+	.int_en = ADP5585_INT_EN,
+	.gen_cfg = ADP5585_GENERAL_CFG,
+	.poll_ptime_cfg = ADP5585_POLL_PTIME_CFG,
+	.reset_cfg = ADP5585_RESET_CFG,
+	.reset1_event_a = ADP5585_RESET1_EVENT_A,
+	.reset2_event_a = ADP5585_RESET2_EVENT_A,
+	.pin_cfg_a = ADP5585_PIN_CONFIG_A,
+};
+
+static const struct adp5585_regs adp5589_regs = {
+	.ext_cfg = ADP5589_PIN_CONFIG_D,
+	.int_en = ADP5589_INT_EN,
+	.gen_cfg = ADP5589_GENERAL_CFG,
+	.poll_ptime_cfg = ADP5589_POLL_PTIME_CFG,
+	.reset_cfg = ADP5589_RESET_CFG,
+	.reset1_event_a = ADP5589_RESET1_EVENT_A,
+	.reset2_event_a = ADP5589_RESET2_EVENT_A,
+	.pin_cfg_a = ADP5589_PIN_CONFIG_A,
+};
+
+static int adp5585_validate_event(const struct adp5585_dev *adp5585, unsigned int ev)
+{
+	if (adp5585->has_pin6) {
+		if (ev >= ADP5585_ROW5_KEY_EVENT_START && ev <= ADP5585_ROW5_KEY_EVENT_END)
+			return 0;
+		if (ev >= ADP5585_GPI_EVENT_START && ev <= ADP5585_GPI_EVENT_END)
+			return 0;
+
+		return dev_err_probe(adp5585->dev, -EINVAL,
+				     "Invalid unlock/reset event(%u) for this device\n", ev);
+	}
+
+	if (ev >= ADP5585_KEY_EVENT_START && ev <= ADP5585_KEY_EVENT_END)
+		return 0;
+	if (ev >= ADP5585_GPI_EVENT_START && ev <= ADP5585_GPI_EVENT_END) {
+		/*
+		 * Some variants of the adp5585 do not have the Row 5
+		 * (meaning pin 6 or GPIO 6) available. Instead that pin serves
+		 * as a reset pin. So, we need to make sure no event is
+		 * configured for it.
+		 */
+		if (ev == (ADP5585_GPI_EVENT_START + 5))
+			return dev_err_probe(adp5585->dev, -EINVAL,
+					     "Invalid unlock/reset event(%u). R5 not available\n",
+					     ev);
+		return 0;
+	}
+
+	return dev_err_probe(adp5585->dev, -EINVAL,
+			     "Invalid unlock/reset event(%u) for this device\n", ev);
+}
+
+static int adp5589_validate_event(const struct adp5585_dev *adp5585, unsigned int ev)
+{
+	if (ev >= ADP5589_KEY_EVENT_START && ev <= ADP5589_KEY_EVENT_END)
+		return 0;
+	if (ev >= ADP5589_GPI_EVENT_START && ev <= ADP5589_GPI_EVENT_END)
+		return 0;
+
+	return dev_err_probe(adp5585->dev, -EINVAL,
+			     "Invalid unlock/reset event(%u) for this device\n", ev);
+}
+
+static struct regmap_config *adp5585_fill_variant_config(struct adp5585_dev *adp5585)
+{
+	struct regmap_config *regmap_config;
+
+	switch (adp5585->variant) {
+	case ADP5585_00:
+	case ADP5585_01:
+	case ADP5585_02:
+	case ADP5585_03:
+	case ADP5585_04:
+		adp5585->id = ADP5585_MAN_ID_VALUE;
+		adp5585->regs = &adp5585_regs;
+		adp5585->n_pins = ADP5585_PIN_MAX;
+		adp5585->reset2_out = ADP5585_RESET2_OUT;
+		if (adp5585->variant == ADP5585_01)
+			adp5585->has_pin6 = true;
+		regmap_config = devm_kmemdup(adp5585->dev, &adp5585_regmap_config_template,
+					     sizeof(*regmap_config), GFP_KERNEL);
+		break;
+	case ADP5589_00:
+	case ADP5589_01:
+	case ADP5589_02:
+		adp5585->id = ADP5589_MAN_ID_VALUE;
+		adp5585->regs = &adp5589_regs;
+		adp5585->has_unlock = true;
+		adp5585->has_pin6 = true;
+		adp5585->n_pins = ADP5589_PIN_MAX;
+		adp5585->reset2_out = ADP5589_RESET2_OUT;
+		regmap_config = devm_kmemdup(adp5585->dev, &adp5589_regmap_config_template,
+					     sizeof(*regmap_config), GFP_KERNEL);
+		break;
+	default:
+		return ERR_PTR(-ENODEV);
+	}
+
+	if (!regmap_config)
+		return ERR_PTR(-ENOMEM);
+
+	regmap_config->reg_defaults_raw = adp5585_regmap_defaults[adp5585->variant];
+
+	return regmap_config;
+}
+
+static int adp5585_parse_ev_array(const struct adp5585_dev *adp5585, const char *prop, u32 *events,
+				  u32 *n_events, u32 max_evs, bool reset_ev)
+{
+	struct device *dev = adp5585->dev;
+	unsigned int ev;
+	int ret;
+
+	/*
+	 * The device has the capability of handling special events through GPIs or a Keypad:
+	 *  unlock events: Unlock the keymap until one of the configured events is detected.
+	 *  reset events: Generate a reset pulse when one of the configured events is detected.
+	 */
+	ret = device_property_count_u32(dev, prop);
+	if (ret < 0)
+		return 0;
+
+	*n_events = ret;
+
+	if (!adp5585->has_unlock && !reset_ev)
+		return dev_err_probe(dev, -EOPNOTSUPP, "Unlock keys not supported\n");
+
+	if (*n_events > max_evs)
+		return dev_err_probe(dev, -EINVAL,
+				     "Invalid number of keys(%u > %u) for %s\n",
+				     *n_events, max_evs, prop);
+
+	ret = device_property_read_u32_array(dev, prop, events, *n_events);
+	if (ret)
+		return ret;
+
+	for (ev = 0; ev < *n_events; ev++) {
+		if (!reset_ev && events[ev] == ADP5589_UNLOCK_WILDCARD)
+			continue;
+
+		if (adp5585->id == ADP5585_MAN_ID_VALUE)
+			ret = adp5585_validate_event(adp5585, events[ev]);
+		else
+			ret = adp5589_validate_event(adp5585, events[ev]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int adp5585_unlock_ev_parse(struct adp5585_dev *adp5585)
+{
+	struct device *dev = adp5585->dev;
+	int ret;
+
+	ret = adp5585_parse_ev_array(adp5585, "adi,unlock-events", adp5585->unlock_keys,
+				     &adp5585->nkeys_unlock, ARRAY_SIZE(adp5585->unlock_keys),
+				     false);
+	if (ret)
+		return ret;
+	if (!adp5585->nkeys_unlock)
+		return 0;
+
+	ret = device_property_read_u32(dev, "adi,unlock-trigger-sec", &adp5585->unlock_time);
+	if (!ret) {
+		if (adp5585->unlock_time > ADP5585_MAX_UNLOCK_TIME_SEC)
+			return dev_err_probe(dev, -EINVAL,
+					     "Invalid unlock time(%u > %d)\n",
+					     adp5585->unlock_time,
+					     ADP5585_MAX_UNLOCK_TIME_SEC);
+	}
+
+	return 0;
+}
+
+static int adp5585_reset_ev_parse(struct adp5585_dev *adp5585)
+{
+	struct device *dev = adp5585->dev;
+	u32 prop_val;
+	int ret;
+
+	ret = adp5585_parse_ev_array(adp5585, "adi,reset1-events", adp5585->reset1_keys,
+				     &adp5585->nkeys_reset1,
+				     ARRAY_SIZE(adp5585->reset1_keys), true);
+	if (ret)
+		return ret;
+
+	ret = adp5585_parse_ev_array(adp5585, "adi,reset2-events",
+				     adp5585->reset2_keys,
+				     &adp5585->nkeys_reset2,
+				     ARRAY_SIZE(adp5585->reset2_keys), true);
+	if (ret)
+		return ret;
+
+	if (!adp5585->nkeys_reset1 && !adp5585->nkeys_reset2)
+		return 0;
+
+	if (adp5585->nkeys_reset1 && device_property_read_bool(dev, "adi,reset1-active-high"))
+		adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET1_POL, 1);
+
+	if (adp5585->nkeys_reset2 && device_property_read_bool(dev, "adi,reset2-active-high"))
+		adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET2_POL, 1);
+
+	if (device_property_read_bool(dev, "adi,rst-passthrough-enable"))
+		adp5585->reset_cfg |= FIELD_PREP(ADP5585_RST_PASSTHRU_EN, 1);
+
+	ret = device_property_read_u32(dev, "adi,reset-trigger-ms", &prop_val);
+	if (!ret) {
+		switch (prop_val) {
+		case 0:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 0);
+			break;
+		case 1000:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 1);
+			break;
+		case 1500:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 2);
+			break;
+		case 2000:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 3);
+			break;
+		case 2500:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 4);
+			break;
+		case 3000:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 5);
+			break;
+		case 3500:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 6);
+			break;
+		case 4000:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 7);
+			break;
+		default:
+			return dev_err_probe(dev, -EINVAL,
+					     "Invalid value(%u) for adi,reset-trigger-ms\n",
+					     prop_val);
+		}
+	}
+
+	ret = device_property_read_u32(dev, "adi,reset-pulse-width-us", &prop_val);
+	if (!ret) {
+		switch (prop_val) {
+		case 500:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_PULSE_WIDTH, 0);
+			break;
+		case 1000:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_PULSE_WIDTH, 1);
+			break;
+		case 2000:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_PULSE_WIDTH, 2);
+			break;
+		case 10000:
+			adp5585->reset_cfg |= FIELD_PREP(ADP5585_PULSE_WIDTH, 3);
+			break;
+		default:
+			return dev_err_probe(dev, -EINVAL,
+					     "Invalid value(%u) for adi,reset-pulse-width-us\n",
+					     prop_val);
+		}
+	}
+
+	return 0;
+}
+
+static int adp5585_add_devices(const struct adp5585_dev *adp5585)
+{
+	struct device *dev = adp5585->dev;
+	const struct mfd_cell *cells;
+	int ret;
+
+	if (adp5585->id == ADP5585_MAN_ID_VALUE)
+		cells = adp5585_devs;
+	else
+		cells = adp5589_devs;
+
+	if (device_property_present(dev, "#pwm-cells")) {
+		/* Make sure the PWM output pin is not used by the GPIO or INPUT devices */
+		__set_bit(ADP5585_PWM_OUT, adp5585->pin_usage);
+		ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO,
+					   &cells[ADP5585_DEV_PWM], 1, NULL, 0, NULL);
+		if (ret)
+			return dev_err_probe(dev, ret, "Failed to add PWM device\n");
+	}
+
+	if (device_property_present(dev, "#gpio-cells")) {
+		ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO,
+					   &cells[ADP5585_DEV_GPIO], 1, NULL, 0, NULL);
+		if (ret)
+			return dev_err_probe(dev, ret, "Failed to add GPIO device\n");
+	}
+
+	if (device_property_present(adp5585->dev, "adi,keypad-pins")) {
+		ret = devm_mfd_add_devices(adp5585->dev, PLATFORM_DEVID_AUTO,
+					   &cells[ADP5585_DEV_INPUT], 1, NULL, 0, NULL);
+		if (ret)
+			return dev_err_probe(dev, ret, "Failed to add input device\n");
+	}
+
+	return 0;
+}
+
+static void adp5585_osc_disable(void *data)
+{
+	const struct adp5585_dev *adp5585 = data;
+
+	regmap_write(adp5585->regmap, ADP5585_GENERAL_CFG, 0);
+}
+
+static void adp5585_report_events(struct adp5585_dev *adp5585, int ev_cnt)
+{
+	unsigned int i;
+
+	for (i = 0; i < ev_cnt; i++) {
+		unsigned long key_val, key_press;
+		unsigned int key;
+		int ret;
+
+		ret = regmap_read(adp5585->regmap, ADP5585_FIFO_1 + i, &key);
+		if (ret)
+			return;
+
+		key_val = FIELD_GET(ADP5585_KEY_EVENT_MASK, key);
+		key_press = FIELD_GET(ADP5585_KEV_EV_PRESS_MASK, key);
+
+		blocking_notifier_call_chain(&adp5585->event_notifier, key_val, (void *)key_press);
+	}
+}
+
+static irqreturn_t adp5585_irq(int irq, void *data)
+{
+	struct adp5585_dev *adp5585 = data;
+	unsigned int status, ev_cnt;
+	int ret;
+
+	ret = regmap_read(adp5585->regmap, ADP5585_INT_STATUS, &status);
+	if (ret)
+		return IRQ_HANDLED;
+
+	if (status & ADP5585_OVRFLOW_INT)
+		dev_err_ratelimited(adp5585->dev, "Event overflow error\n");
+
+	if (!(status & ADP5585_EVENT_INT))
+		goto out_irq;
+
+	ret = regmap_read(adp5585->regmap, ADP5585_STATUS, &ev_cnt);
+	if (ret)
+		goto out_irq;
+
+	ev_cnt = FIELD_GET(ADP5585_EC_MASK, ev_cnt);
+	if (!ev_cnt)
+		goto out_irq;
+
+	adp5585_report_events(adp5585, ev_cnt);
+out_irq:
+	regmap_write(adp5585->regmap, ADP5585_INT_STATUS, status);
+	return IRQ_HANDLED;
+}
+
+static int adp5585_setup(struct adp5585_dev *adp5585)
+{
+	const struct adp5585_regs *regs = adp5585->regs;
+	unsigned int reg_val = 0, i;
+	int ret;
+
+	/* If pin_6 (ROW5/GPI6) is not available, make sure to mark it as "busy" */
+	if (!adp5585->has_pin6)
+		__set_bit(ADP5585_ROW5, adp5585->pin_usage);
+
+	/* Configure the device with reset and unlock events */
+	for (i = 0; i < adp5585->nkeys_unlock; i++) {
+		ret = regmap_write(adp5585->regmap, ADP5589_UNLOCK1 + i,
+				   adp5585->unlock_keys[i] | ADP5589_UNLOCK_EV_PRESS);
+		if (ret)
+			return ret;
+	}
+
+	if (adp5585->nkeys_unlock) {
+		ret = regmap_update_bits(adp5585->regmap, ADP5589_UNLOCK_TIMERS,
+					 ADP5589_UNLOCK_TIMER, adp5585->unlock_time);
+		if (ret)
+			return ret;
+
+		ret = regmap_set_bits(adp5585->regmap, ADP5589_LOCK_CFG, ADP5589_LOCK_EN);
+		if (ret)
+			return ret;
+	}
+
+	for (i = 0; i < adp5585->nkeys_reset1; i++) {
+		ret = regmap_write(adp5585->regmap, regs->reset1_event_a + i,
+				   adp5585->reset1_keys[i] | ADP5585_RESET_EV_PRESS);
+		if (ret)
+			return ret;
+
+		/* Mark that pin as not usable for the INPUT and GPIO devices. */
+		__set_bit(ADP5585_RESET1_OUT, adp5585->pin_usage);
+	}
+
+	for (i = 0; i < adp5585->nkeys_reset2; i++) {
+		ret = regmap_write(adp5585->regmap, regs->reset2_event_a + i,
+				   adp5585->reset2_keys[i] | ADP5585_RESET_EV_PRESS);
+		if (ret)
+			return ret;
+
+		__set_bit(adp5585->reset2_out, adp5585->pin_usage);
+	}
+
+	if (adp5585->nkeys_reset1 || adp5585->nkeys_reset2) {
+		ret = regmap_write(adp5585->regmap, regs->reset_cfg, adp5585->reset_cfg);
+		if (ret)
+			return ret;
+
+		/* If there's a reset1 event, then R4 is used as an output for the reset signal */
+		if (adp5585->nkeys_reset1)
+			reg_val = ADP5585_R4_EXTEND_CFG_RESET1;
+		/* If there's a reset2 event, then C4 is used as an output for the reset signal */
+		if (adp5585->nkeys_reset2)
+			reg_val |= ADP5585_C4_EXTEND_CFG_RESET2;
+
+		ret = regmap_update_bits(adp5585->regmap, regs->ext_cfg,
+					 ADP5585_C4_EXTEND_CFG_MASK | ADP5585_R4_EXTEND_CFG_MASK,
+					 reg_val);
+		if (ret)
+			return ret;
+	}
+
+	/* Clear any possible event by reading all the FIFO entries */
+	for (i = 0; i < ADP5585_EV_MAX; i++) {
+		ret = regmap_read(adp5585->regmap, ADP5585_FIFO_1 + i, &reg_val);
+		if (ret)
+			return ret;
+	}
+
+	ret = regmap_write(adp5585->regmap, regs->poll_ptime_cfg, adp5585->ev_poll_time);
+	if (ret)
+		return ret;
+
+	/*
+	 * Enable the internal oscillator, as it's shared between multiple
+	 * functions.
+	 */
+	ret = regmap_write(adp5585->regmap, regs->gen_cfg,
+			   ADP5585_OSC_FREQ_500KHZ | ADP5585_INT_CFG | ADP5585_OSC_EN);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(adp5585->dev, adp5585_osc_disable, adp5585);
+}
+
+static int adp5585_parse_fw(struct adp5585_dev *adp5585)
+{
+	unsigned int prop_val;
+	int ret;
+
+	ret = device_property_read_u32(adp5585->dev, "poll-interval", &prop_val);
+	if (!ret) {
+		adp5585->ev_poll_time = prop_val / 10 - 1;
+		/*
+		 * ev_poll_time is the raw value to be written on the register and 0 to 3 are the
+		 * valid values.
+		 */
+		if (adp5585->ev_poll_time > 3)
+			return dev_err_probe(adp5585->dev, -EINVAL,
+					     "Invalid value(%u) for poll-interval\n", prop_val);
+	}
+
+	ret = adp5585_unlock_ev_parse(adp5585);
+	if (ret)
+		return ret;
+
+	return adp5585_reset_ev_parse(adp5585);
+}
+
+static void adp5585_irq_disable(void *data)
+{
+	struct adp5585_dev *adp5585 = data;
+
+	regmap_write(adp5585->regmap, adp5585->regs->int_en, 0);
+}
+
+static int adp5585_irq_enable(struct i2c_client *i2c,
+			      struct adp5585_dev *adp5585)
+{
+	const struct adp5585_regs *regs = adp5585->regs;
+	unsigned int stat;
+	int ret;
+
+	if (i2c->irq <= 0)
+		return 0;
+
+	ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL, adp5585_irq,
+					IRQF_ONESHOT, i2c->name, adp5585);
+	if (ret)
+		return ret;
+
+	/*
+	 * Clear any possible outstanding interrupt before enabling them. We do that by reading
+	 * the status register and writing back the same value.
+	 */
+	ret = regmap_read(adp5585->regmap, ADP5585_INT_STATUS, &stat);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(adp5585->regmap, ADP5585_INT_STATUS, stat);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(adp5585->regmap, regs->int_en, ADP5585_OVRFLOW_IEN | ADP5585_EVENT_IEN);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(&i2c->dev, adp5585_irq_disable, adp5585);
+}
+
+static int adp5585_i2c_probe(struct i2c_client *i2c)
+{
+	struct regmap_config *regmap_config;
+	struct adp5585_dev *adp5585;
+	struct gpio_desc *gpio;
+	unsigned int id;
+	int ret;
+
+	adp5585 = devm_kzalloc(&i2c->dev, sizeof(*adp5585), GFP_KERNEL);
+	if (!adp5585)
+		return -ENOMEM;
+
+	i2c_set_clientdata(i2c, adp5585);
+	adp5585->dev = &i2c->dev;
+	adp5585->irq = i2c->irq;
+	BLOCKING_INIT_NOTIFIER_HEAD(&adp5585->event_notifier);
+
+	adp5585->variant = (enum adp5585_variant)(uintptr_t)i2c_get_match_data(i2c);
+	if (!adp5585->variant)
+		return -ENODEV;
+
+	regmap_config = adp5585_fill_variant_config(adp5585);
+	if (IS_ERR(regmap_config))
+		return PTR_ERR(regmap_config);
+
+	ret = devm_regulator_get_enable(&i2c->dev, "vdd");
+	if (ret)
+		return ret;
+
+	gpio = devm_gpiod_get_optional(&i2c->dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpio))
+		return PTR_ERR(gpio);
+
+	/*
+	 * Note the timings are not documented anywhere in the datasheet. They are just
+	 * reasonable values that work.
+	 */
+	if (gpio) {
+		fsleep(30);
+		gpiod_set_value_cansleep(gpio, 0);
+		fsleep(60);
+	}
+
+	adp5585->regmap = devm_regmap_init_i2c(i2c, regmap_config);
+	if (IS_ERR(adp5585->regmap))
+		return dev_err_probe(&i2c->dev, PTR_ERR(adp5585->regmap),
+				     "Failed to initialize register map\n");
+
+	ret = regmap_read(adp5585->regmap, ADP5585_ID, &id);
+	if (ret)
+		return dev_err_probe(&i2c->dev, ret,
+				     "Failed to read device ID\n");
+
+	id &= ADP5585_MAN_ID_MASK;
+	if (id != adp5585->id)
+		return dev_err_probe(&i2c->dev, -ENODEV,
+				     "Invalid device ID 0x%02x\n", id);
+
+	adp5585->pin_usage = devm_bitmap_zalloc(&i2c->dev, adp5585->n_pins, GFP_KERNEL);
+	if (!adp5585->pin_usage)
+		return -ENOMEM;
+
+	ret = adp5585_parse_fw(adp5585);
+	if (ret)
+		return ret;
+
+	ret = adp5585_setup(adp5585);
+	if (ret)
+		return ret;
+
+	ret = adp5585_add_devices(adp5585);
+	if (ret)
+		return ret;
+
+	return adp5585_irq_enable(i2c, adp5585);
+}
+
+static int adp5585_suspend(struct device *dev)
+{
+	struct adp5585_dev *adp5585 = dev_get_drvdata(dev);
+
+	if (adp5585->irq)
+		disable_irq(adp5585->irq);
+
+	regcache_cache_only(adp5585->regmap, true);
+
+	return 0;
+}
+
+static int adp5585_resume(struct device *dev)
+{
+	struct adp5585_dev *adp5585 = dev_get_drvdata(dev);
+	int ret;
+
+	regcache_cache_only(adp5585->regmap, false);
+	regcache_mark_dirty(adp5585->regmap);
+
+	ret = regcache_sync(adp5585->regmap);
+	if (ret)
+		return ret;
+
+	if (adp5585->irq)
+		enable_irq(adp5585->irq);
+
+	return 0;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(adp5585_pm, adp5585_suspend, adp5585_resume);
+
+static const struct of_device_id adp5585_of_match[] = {
+	{
+		.compatible = "adi,adp5585-00",
+		.data = (void *)ADP5585_00,
+	}, {
+		.compatible = "adi,adp5585-01",
+		.data = (void *)ADP5585_01,
+	}, {
+		.compatible = "adi,adp5585-02",
+		.data = (void *)ADP5585_02,
+	}, {
+		.compatible = "adi,adp5585-03",
+		.data = (void *)ADP5585_03,
+	}, {
+		.compatible = "adi,adp5585-04",
+		.data = (void *)ADP5585_04,
+	}, {
+		.compatible = "adi,adp5589-00",
+		.data = (void *)ADP5589_00,
+	}, {
+		.compatible = "adi,adp5589-01",
+		.data = (void *)ADP5589_01,
+	}, {
+		.compatible = "adi,adp5589-02",
+		.data = (void *)ADP5589_02,
+	}, {
+		.compatible = "adi,adp5589",
+		.data = (void *)ADP5589_00,
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, adp5585_of_match);
+
+static struct i2c_driver adp5585_i2c_driver = {
+	.driver = {
+		.name = "adp5585",
+		.of_match_table = adp5585_of_match,
+		.pm = pm_sleep_ptr(&adp5585_pm),
+	},
+	.probe = adp5585_i2c_probe,
+};
+module_i2c_driver(adp5585_i2c_driver);
+
+MODULE_DESCRIPTION("ADP5585 core driver");
+MODULE_AUTHOR("Haibo Chen <haibo.chen@nxp.com>");
+MODULE_LICENSE("GPL");