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, 494 insertions, 0 deletions

diff --git a/drivers/mfd/da9063-i2c.c b/drivers/mfd/da9063-i2c.c
new file mode 100644
index 000000000..a803b7440
--- /dev/null
+++ b/drivers/mfd/da9063-i2c.c
@@ -0,0 +1,494 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* I2C support for Dialog DA9063
+ *
+ * Copyright 2012 Dialog Semiconductor Ltd.
+ * Copyright 2013 Philipp Zabel, Pengutronix
+ *
+ * Author: Krystian Garbaciak, Dialog Semiconductor
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+
+#include <linux/mfd/core.h>
+#include <linux/mfd/da9063/core.h>
+#include <linux/mfd/da9063/registers.h>
+
+#include <linux/of.h>
+#include <linux/regulator/of_regulator.h>
+
+/*
+ * Raw I2C access required for just accessing chip and variant info before we
+ * know which device is present. The info read from the device using this
+ * approach is then used to select the correct regmap tables.
+ */
+
+#define DA9063_REG_PAGE_SIZE		0x100
+#define DA9063_REG_PAGED_ADDR_MASK	0xFF
+
+enum da9063_page_sel_buf_fmt {
+	DA9063_PAGE_SEL_BUF_PAGE_REG = 0,
+	DA9063_PAGE_SEL_BUF_PAGE_VAL,
+	DA9063_PAGE_SEL_BUF_SIZE,
+};
+
+enum da9063_page_sel_msgs {
+	DA9063_PAGE_SEL_MSG = 0,
+	DA9063_PAGE_SEL_CNT,
+};
+
+enum da9063_paged_read_msgs {
+	DA9063_PAGED_READ_MSG_REG_SEL = 0,
+	DA9063_PAGED_READ_MSG_DATA,
+	DA9063_PAGED_READ_MSG_CNT,
+};
+
+static int da9063_i2c_blockreg_read(struct i2c_client *client, u16 addr,
+				    u8 *buf, int count)
+{
+	struct i2c_msg xfer[DA9063_PAGED_READ_MSG_CNT];
+	u8 page_sel_buf[DA9063_PAGE_SEL_BUF_SIZE];
+	u8 page_num, paged_addr;
+	int ret;
+
+	/* Determine page info based on register address */
+	page_num = (addr / DA9063_REG_PAGE_SIZE);
+	if (page_num > 1) {
+		dev_err(&client->dev, "Invalid register address provided\n");
+		return -EINVAL;
+	}
+
+	paged_addr = (addr % DA9063_REG_PAGE_SIZE) & DA9063_REG_PAGED_ADDR_MASK;
+	page_sel_buf[DA9063_PAGE_SEL_BUF_PAGE_REG] = DA9063_REG_PAGE_CON;
+	page_sel_buf[DA9063_PAGE_SEL_BUF_PAGE_VAL] =
+		(page_num << DA9063_I2C_PAGE_SEL_SHIFT) & DA9063_REG_PAGE_MASK;
+
+	/* Write reg address, page selection */
+	xfer[DA9063_PAGE_SEL_MSG].addr = client->addr;
+	xfer[DA9063_PAGE_SEL_MSG].flags = 0;
+	xfer[DA9063_PAGE_SEL_MSG].len = DA9063_PAGE_SEL_BUF_SIZE;
+	xfer[DA9063_PAGE_SEL_MSG].buf = page_sel_buf;
+
+	ret = i2c_transfer(client->adapter, xfer, DA9063_PAGE_SEL_CNT);
+	if (ret < 0) {
+		dev_err(&client->dev, "Page switch failed: %d\n", ret);
+		return ret;
+	}
+
+	if (ret != DA9063_PAGE_SEL_CNT) {
+		dev_err(&client->dev, "Page switch failed to complete\n");
+		return -EIO;
+	}
+
+	/* Select register address */
+	xfer[DA9063_PAGED_READ_MSG_REG_SEL].addr = client->addr;
+	xfer[DA9063_PAGED_READ_MSG_REG_SEL].flags = 0;
+	xfer[DA9063_PAGED_READ_MSG_REG_SEL].len = sizeof(paged_addr);
+	xfer[DA9063_PAGED_READ_MSG_REG_SEL].buf = &paged_addr;
+
+	/* Read data */
+	xfer[DA9063_PAGED_READ_MSG_DATA].addr = client->addr;
+	xfer[DA9063_PAGED_READ_MSG_DATA].flags = I2C_M_RD;
+	xfer[DA9063_PAGED_READ_MSG_DATA].len = count;
+	xfer[DA9063_PAGED_READ_MSG_DATA].buf = buf;
+
+	ret = i2c_transfer(client->adapter, xfer, DA9063_PAGED_READ_MSG_CNT);
+	if (ret < 0) {
+		dev_err(&client->dev, "Paged block read failed: %d\n", ret);
+		return ret;
+	}
+
+	if (ret != DA9063_PAGED_READ_MSG_CNT) {
+		dev_err(&client->dev, "Paged block read failed to complete\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+enum {
+	DA9063_DEV_ID_REG = 0,
+	DA9063_VAR_ID_REG,
+	DA9063_CHIP_ID_REGS,
+};
+
+static int da9063_get_device_type(struct i2c_client *i2c, struct da9063 *da9063)
+{
+	u8 buf[DA9063_CHIP_ID_REGS];
+	int ret;
+
+	ret = da9063_i2c_blockreg_read(i2c, DA9063_REG_DEVICE_ID, buf,
+				       DA9063_CHIP_ID_REGS);
+	if (ret)
+		return ret;
+
+	if (buf[DA9063_DEV_ID_REG] != PMIC_CHIP_ID_DA9063) {
+		dev_err(da9063->dev,
+			"Invalid chip device ID: 0x%02x\n",
+			buf[DA9063_DEV_ID_REG]);
+		return -ENODEV;
+	}
+
+	dev_info(da9063->dev,
+		 "Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n",
+		 buf[DA9063_DEV_ID_REG], buf[DA9063_VAR_ID_REG]);
+
+	da9063->variant_code =
+		(buf[DA9063_VAR_ID_REG] & DA9063_VARIANT_ID_MRC_MASK)
+		>> DA9063_VARIANT_ID_MRC_SHIFT;
+
+	return 0;
+}
+
+/*
+ * Variant specific regmap configs
+ */
+
+static const struct regmap_range da9063_ad_readable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_AD_REG_SECOND_D),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_AD_REG_GP_ID_19),
+	regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
+};
+
+static const struct regmap_range da9063_ad_writeable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
+	regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
+	regmap_reg_range(DA9063_REG_COUNT_S, DA9063_AD_REG_ALARM_Y),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_AD_REG_MON_REG_4),
+	regmap_reg_range(DA9063_AD_REG_GP_ID_0, DA9063_AD_REG_GP_ID_19),
+};
+
+static const struct regmap_range da9063_ad_volatile_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
+	regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
+	regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
+	regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
+	regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
+	regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_AD_REG_SECOND_D),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
+	regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
+	regmap_reg_range(DA9063_AD_REG_MON_REG_5, DA9063_AD_REG_MON_REG_6),
+};
+
+static const struct regmap_access_table da9063_ad_readable_table = {
+	.yes_ranges = da9063_ad_readable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_ad_readable_ranges),
+};
+
+static const struct regmap_access_table da9063_ad_writeable_table = {
+	.yes_ranges = da9063_ad_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_ad_writeable_ranges),
+};
+
+static const struct regmap_access_table da9063_ad_volatile_table = {
+	.yes_ranges = da9063_ad_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_ad_volatile_ranges),
+};
+
+static const struct regmap_range da9063_bb_readable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_BB_REG_SECOND_D),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
+	regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
+};
+
+static const struct regmap_range da9063_bb_writeable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
+	regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
+	regmap_reg_range(DA9063_REG_COUNT_S, DA9063_BB_REG_ALARM_Y),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
+	regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
+};
+
+static const struct regmap_range da9063_bb_da_volatile_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
+	regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
+	regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
+	regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
+	regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
+	regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_BB_REG_SECOND_D),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
+	regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
+	regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
+};
+
+static const struct regmap_access_table da9063_bb_readable_table = {
+	.yes_ranges = da9063_bb_readable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_bb_readable_ranges),
+};
+
+static const struct regmap_access_table da9063_bb_writeable_table = {
+	.yes_ranges = da9063_bb_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges),
+};
+
+static const struct regmap_access_table da9063_bb_da_volatile_table = {
+	.yes_ranges = da9063_bb_da_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_bb_da_volatile_ranges),
+};
+
+static const struct regmap_range da9063l_bb_readable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_MON_A10_RES),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
+	regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
+};
+
+static const struct regmap_range da9063l_bb_writeable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
+	regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
+	regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
+};
+
+static const struct regmap_range da9063l_bb_da_volatile_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
+	regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
+	regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
+	regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
+	regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
+	regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_REG_MON_A10_RES),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
+	regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
+	regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
+};
+
+static const struct regmap_access_table da9063l_bb_readable_table = {
+	.yes_ranges = da9063l_bb_readable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063l_bb_readable_ranges),
+};
+
+static const struct regmap_access_table da9063l_bb_writeable_table = {
+	.yes_ranges = da9063l_bb_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063l_bb_writeable_ranges),
+};
+
+static const struct regmap_access_table da9063l_bb_da_volatile_table = {
+	.yes_ranges = da9063l_bb_da_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063l_bb_da_volatile_ranges),
+};
+
+static const struct regmap_range da9063_da_readable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_BB_REG_SECOND_D),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_11),
+	regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
+};
+
+static const struct regmap_range da9063_da_writeable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
+	regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
+	regmap_reg_range(DA9063_REG_COUNT_S, DA9063_BB_REG_ALARM_Y),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
+	regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_11),
+};
+
+static const struct regmap_access_table da9063_da_readable_table = {
+	.yes_ranges = da9063_da_readable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_da_readable_ranges),
+};
+
+static const struct regmap_access_table da9063_da_writeable_table = {
+	.yes_ranges = da9063_da_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_da_writeable_ranges),
+};
+
+static const struct regmap_range da9063l_da_readable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_MON_A10_RES),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_11),
+	regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
+};
+
+static const struct regmap_range da9063l_da_writeable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
+	regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
+	regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_11),
+};
+
+static const struct regmap_access_table da9063l_da_readable_table = {
+	.yes_ranges = da9063l_da_readable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063l_da_readable_ranges),
+};
+
+static const struct regmap_access_table da9063l_da_writeable_table = {
+	.yes_ranges = da9063l_da_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063l_da_writeable_ranges),
+};
+
+static const struct regmap_range_cfg da9063_range_cfg[] = {
+	{
+		.range_min = DA9063_REG_PAGE_CON,
+		.range_max = DA9063_REG_CONFIG_ID,
+		.selector_reg = DA9063_REG_PAGE_CON,
+		.selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
+		.selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
+		.window_start = 0,
+		.window_len = 256,
+	}
+};
+
+static struct regmap_config da9063_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.ranges = da9063_range_cfg,
+	.num_ranges = ARRAY_SIZE(da9063_range_cfg),
+	.max_register = DA9063_REG_CONFIG_ID,
+
+	.cache_type = REGCACHE_MAPLE,
+};
+
+static const struct of_device_id da9063_dt_ids[] = {
+	{ .compatible = "dlg,da9063", },
+	{ .compatible = "dlg,da9063l", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, da9063_dt_ids);
+static int da9063_i2c_probe(struct i2c_client *i2c)
+{
+	const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
+	struct da9063 *da9063;
+	int ret;
+
+	da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL);
+	if (da9063 == NULL)
+		return -ENOMEM;
+
+	i2c_set_clientdata(i2c, da9063);
+	da9063->dev = &i2c->dev;
+	da9063->chip_irq = i2c->irq;
+	da9063->type = id->driver_data;
+
+	ret = da9063_get_device_type(i2c, da9063);
+	if (ret)
+		return ret;
+
+	switch (da9063->type) {
+	case PMIC_TYPE_DA9063:
+		switch (da9063->variant_code) {
+		case PMIC_DA9063_AD:
+			da9063_regmap_config.rd_table =
+				&da9063_ad_readable_table;
+			da9063_regmap_config.wr_table =
+				&da9063_ad_writeable_table;
+			da9063_regmap_config.volatile_table =
+				&da9063_ad_volatile_table;
+			break;
+		case PMIC_DA9063_BB:
+		case PMIC_DA9063_CA:
+			da9063_regmap_config.rd_table =
+				&da9063_bb_readable_table;
+			da9063_regmap_config.wr_table =
+				&da9063_bb_writeable_table;
+			da9063_regmap_config.volatile_table =
+				&da9063_bb_da_volatile_table;
+			break;
+		case PMIC_DA9063_DA:
+		case PMIC_DA9063_EA:
+			da9063_regmap_config.rd_table =
+				&da9063_da_readable_table;
+			da9063_regmap_config.wr_table =
+				&da9063_da_writeable_table;
+			da9063_regmap_config.volatile_table =
+				&da9063_bb_da_volatile_table;
+			break;
+		default:
+			dev_err(da9063->dev,
+				"Chip variant not supported for DA9063\n");
+			return -ENODEV;
+		}
+		break;
+	case PMIC_TYPE_DA9063L:
+		switch (da9063->variant_code) {
+		case PMIC_DA9063_BB:
+		case PMIC_DA9063_CA:
+			da9063_regmap_config.rd_table =
+				&da9063l_bb_readable_table;
+			da9063_regmap_config.wr_table =
+				&da9063l_bb_writeable_table;
+			da9063_regmap_config.volatile_table =
+				&da9063l_bb_da_volatile_table;
+			break;
+		case PMIC_DA9063_DA:
+		case PMIC_DA9063_EA:
+			da9063_regmap_config.rd_table =
+				&da9063l_da_readable_table;
+			da9063_regmap_config.wr_table =
+				&da9063l_da_writeable_table;
+			da9063_regmap_config.volatile_table =
+				&da9063l_bb_da_volatile_table;
+			break;
+		default:
+			dev_err(da9063->dev,
+				"Chip variant not supported for DA9063L\n");
+			return -ENODEV;
+		}
+		break;
+	default:
+		dev_err(da9063->dev, "Chip type not supported\n");
+		return -ENODEV;
+	}
+
+	da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);
+	if (IS_ERR(da9063->regmap)) {
+		ret = PTR_ERR(da9063->regmap);
+		dev_err(da9063->dev, "Failed to allocate register map: %d\n",
+			ret);
+		return ret;
+	}
+
+	/* If SMBus is not available and only I2C is possible, enter I2C mode */
+	if (i2c_check_functionality(i2c->adapter, I2C_FUNC_I2C)) {
+		ret = regmap_clear_bits(da9063->regmap, DA9063_REG_CONFIG_J,
+					DA9063_TWOWIRE_TO);
+		if (ret < 0) {
+			dev_err(da9063->dev, "Failed to set Two-Wire Bus Mode.\n");
+			return ret;
+		}
+	}
+
+	/* Reserve our unused second address so userspace won't interfere */
+	devm_i2c_new_dummy_device(&i2c->dev, i2c->adapter, i2c->addr + 1);
+
+	return da9063_device_init(da9063, i2c->irq);
+}
+
+static const struct i2c_device_id da9063_i2c_id[] = {
+	{ "da9063", PMIC_TYPE_DA9063 },
+	{ "da9063l", PMIC_TYPE_DA9063L },
+	{},
+};
+MODULE_DEVICE_TABLE(i2c, da9063_i2c_id);
+
+static struct i2c_driver da9063_i2c_driver = {
+	.driver = {
+		.name = "da9063",
+		.of_match_table = da9063_dt_ids,
+	},
+	.probe = da9063_i2c_probe,
+	.id_table = da9063_i2c_id,
+};
+
+module_i2c_driver(da9063_i2c_driver);