Message-Id: <20250610-pf1550-v5-2-ed0d9e3aaac7@savoirfairelinux.com>
Date: Tue, 10 Jun 2025 15:47:30 -0400
From: Samuel Kayode via B4 Relay <devnull+samuel.kayode.savoirfairelinux.com@...nel.org>
To: Lee Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Liam Girdwood <lgirdwood@...il.com>, 
 Mark Brown <broonie@...nel.org>, 
 Dmitry Torokhov <dmitry.torokhov@...il.com>, 
 Sebastian Reichel <sre@...nel.org>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-input@...r.kernel.org, linux-pm@...r.kernel.org, 
 Abel Vesa <abelvesa@...nel.org>, Abel Vesa <abelvesa@...ux.com>, 
 Robin Gong <b38343@...escale.com>, Robin Gong <yibin.gong@....com>, 
 Enric Balletbo i Serra <eballetbo@...il.com>, 
 Samuel Kayode <samuel.kayode@...oirfairelinux.com>, 
 Abel Vesa <abelvesa@...nel.org>
Subject: [PATCH v5 2/6] mfd: pf1550: add core mfd driver

From: Samuel Kayode <samuel.kayode@...oirfairelinux.com>

Add the core mfd driver for pf1550 PMIC. There are 3 subdevices for
which the drivers will be added in subsequent patches.

Signed-off-by: Samuel Kayode <samuel.kayode@...oirfairelinux.com>
---
v5:
 - Use top level interrupt to manage interrupts for the sub-drivers as
   recommended by Mark Brown. The regmap_irq_sub_irq_map would have been used
   if not for the irregular charger irq address. For all children, the mask
   register is directly after the irq register (i.e., 0x08, 0x09) except
   for the charger: 0x80, 0x82. Meaning .mask_base would be applicable
   for all but the charger
 - Fix bad offset for temperature interrupts of regulator
v4:
 - Use struct resource to define irq so platform_get_irq can be used in
   children as suggested by Dmitry
 - Let mfd_add_devices create the mappings for the interrupts
 - ack_base and init_ack_masked defined for charger and regulator irq
   chips
 - No need to define driver_data in table id
v3:
 - Address Dmitry's feedback:
   - Place Table IDs next to each other
   - Drop of_match_ptr
   - Replace dev_err with dev_err_probe in probe method
   - Drop useless log in probe
 - Map all irqs instead of doing it in the sub-devices as recommended by
   Dmitry.
v2:
 - Address feedback from Enric Balletbo Serra
---
 drivers/mfd/Kconfig        |  14 ++
 drivers/mfd/Makefile       |   2 +
 drivers/mfd/pf1550.c       | 335 +++++++++++++++++++++++++++++++++++++++++++++
 include/linux/mfd/pf1550.h | 259 +++++++++++++++++++++++++++++++++++
 4 files changed, 610 insertions(+)

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 96992af22565205716d72db0494c7bf2567b045e..de3fc9c5e88b5c2a2c7325e2ceeb8f9c3ca057de 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -558,6 +558,20 @@ config MFD_MX25_TSADC
 	  i.MX25 processors. They consist of a conversion queue for general
 	  purpose ADC and a queue for Touchscreens.
 
+config MFD_PF1550
+	tristate "NXP PF1550 PMIC Support"
+	depends on I2C=y && OF
+	select MFD_CORE
+	select REGMAP_I2C
+	select REGMAP_IRQ
+	help
+	  Say yes here to add support for NXP PF1550.
+	  This is a companion Power Management IC with regulators, onkey,
+	  and charger control on chip.
+	  This driver provides common support for accessing the device;
+	  additional drivers must be enabled in order to use the functionality
+	  of the device.
+
 config MFD_HI6421_PMIC
 	tristate "HiSilicon Hi6421 PMU/Codec IC"
 	depends on OF
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 5e5cc279af6036a6b3ea1f1f0feeddf45b85f15c..7391d1b81d1ee499507b4ac24ff00eb2e344d60b 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -120,6 +120,8 @@ obj-$(CONFIG_MFD_MC13XXX)	+= mc13xxx-core.o
 obj-$(CONFIG_MFD_MC13XXX_SPI)	+= mc13xxx-spi.o
 obj-$(CONFIG_MFD_MC13XXX_I2C)	+= mc13xxx-i2c.o
 
+obj-$(CONFIG_MFD_PF1550)	+= pf1550.o
+
 obj-$(CONFIG_MFD_CORE)		+= mfd-core.o
 
 ocelot-soc-objs			:= ocelot-core.o ocelot-spi.o
diff --git a/drivers/mfd/pf1550.c b/drivers/mfd/pf1550.c
new file mode 100644
index 0000000000000000000000000000000000000000..6fdbfd179525c70f620348002f3d545de879f1a3
--- /dev/null
+++ b/drivers/mfd/pf1550.c
@@ -0,0 +1,335 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// pf1550.c - mfd core driver for the PF1550
+//
+// Copyright (C) 2016 Freescale Semiconductor, Inc.
+// Robin Gong <yibin.gong@...escale.com>
+//
+// Portions Copyright (c) 2025 Savoir-faire Linux Inc.
+// Samuel Kayode <samuel.kayode@...oirfairelinux.com>
+//
+// This driver is based on max77693.c
+//
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/pf1550.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+static const struct regmap_config pf1550_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = PF1550_PMIC_REG_END,
+};
+
+static const struct regmap_irq pf1550_irqs[] = {
+	REGMAP_IRQ_REG(PF1550_IRQ_CHG,		 0, IRQ_CHG),
+	REGMAP_IRQ_REG(PF1550_IRQ_REGULATOR,     0, IRQ_REGULATOR),
+	REGMAP_IRQ_REG(PF1550_IRQ_ONKEY,	 0, IRQ_ONKEY),
+};
+
+static const struct regmap_irq_chip pf1550_irq_chip = {
+	.name			= "pf1550",
+	.status_base		= PF1550_PMIC_REG_INT_CATEGORY,
+	.init_ack_masked	= 1,
+	.num_regs		= 1,
+	.irqs			= pf1550_irqs,
+	.num_irqs		= ARRAY_SIZE(pf1550_irqs),
+};
+
+static const struct regmap_irq pf1550_regulator_irqs[] = {
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW1_LS,         0, PMIC_IRQ_SW1_LS),
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW2_LS,         0, PMIC_IRQ_SW2_LS),
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW3_LS,         0, PMIC_IRQ_SW3_LS),
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW1_HS,         3, PMIC_IRQ_SW1_HS),
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW2_HS,         3, PMIC_IRQ_SW2_HS),
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW3_HS,         3, PMIC_IRQ_SW3_HS),
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_LDO1_FAULT,    16, PMIC_IRQ_LDO1_FAULT),
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_LDO2_FAULT,    16, PMIC_IRQ_LDO2_FAULT),
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_LDO3_FAULT,    16, PMIC_IRQ_LDO3_FAULT),
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_TEMP_110,      24, PMIC_IRQ_TEMP_110),
+	REGMAP_IRQ_REG(PF1550_PMIC_IRQ_TEMP_125,      24, PMIC_IRQ_TEMP_125),
+};
+
+static const struct regmap_irq_chip pf1550_regulator_irq_chip = {
+	.name			= "pf1550-regulator",
+	.status_base		= PF1550_PMIC_REG_SW_INT_STAT0,
+	.ack_base		= PF1550_PMIC_REG_SW_INT_STAT0,
+	.mask_base		= PF1550_PMIC_REG_SW_INT_MASK0,
+	.use_ack                = 1,
+	.init_ack_masked	= 1,
+	.num_regs		= 25,
+	.irqs			= pf1550_regulator_irqs,
+	.num_irqs		= ARRAY_SIZE(pf1550_regulator_irqs),
+};
+
+static const struct resource regulator_resources[] = {
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW1_LS),
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW2_LS),
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW3_LS),
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW1_HS),
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW2_HS),
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW3_HS),
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_LDO1_FAULT),
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_LDO2_FAULT),
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_LDO3_FAULT),
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_TEMP_110),
+	DEFINE_RES_IRQ(PF1550_PMIC_IRQ_TEMP_125),
+};
+
+static const struct regmap_irq pf1550_onkey_irqs[] = {
+	REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_PUSHI,  0, ONKEY_IRQ_PUSHI),
+	REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_1SI,    0, ONKEY_IRQ_1SI),
+	REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_2SI,    0, ONKEY_IRQ_2SI),
+	REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_3SI,    0, ONKEY_IRQ_3SI),
+	REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_4SI,    0, ONKEY_IRQ_4SI),
+	REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_8SI,    0, ONKEY_IRQ_8SI),
+};
+
+static const struct regmap_irq_chip pf1550_onkey_irq_chip = {
+	.name			= "pf1550-onkey",
+	.status_base		= PF1550_PMIC_REG_ONKEY_INT_STAT0,
+	.ack_base		= PF1550_PMIC_REG_ONKEY_INT_STAT0,
+	.mask_base		= PF1550_PMIC_REG_ONKEY_INT_MASK0,
+	.use_ack                = 1,
+	.init_ack_masked	= 1,
+	.num_regs		= 1,
+	.irqs			= pf1550_onkey_irqs,
+	.num_irqs		= ARRAY_SIZE(pf1550_onkey_irqs),
+};
+
+static const struct resource onkey_resources[] = {
+	DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_PUSHI),
+	DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_1SI),
+	DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_2SI),
+	DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_3SI),
+	DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_4SI),
+	DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_8SI),
+};
+
+static const struct regmap_irq pf1550_charger_irqs[] = {
+	REGMAP_IRQ_REG(PF1550_CHARG_IRQ_BAT2SOCI,	0, CHARG_IRQ_BAT2SOCI),
+	REGMAP_IRQ_REG(PF1550_CHARG_IRQ_BATI,           0, CHARG_IRQ_BATI),
+	REGMAP_IRQ_REG(PF1550_CHARG_IRQ_CHGI,           0, CHARG_IRQ_CHGI),
+	REGMAP_IRQ_REG(PF1550_CHARG_IRQ_VBUSI,          0, CHARG_IRQ_VBUSI),
+	REGMAP_IRQ_REG(PF1550_CHARG_IRQ_THMI,           0, CHARG_IRQ_THMI),
+};
+
+static const struct regmap_irq_chip pf1550_charger_irq_chip = {
+	.name			= "pf1550-charger",
+	.status_base		= PF1550_CHARG_REG_CHG_INT,
+	.ack_base		= PF1550_CHARG_REG_CHG_INT,
+	.mask_base		= PF1550_CHARG_REG_CHG_INT_MASK,
+	.use_ack                = 1,
+	.init_ack_masked	= 1,
+	.num_regs		= 1,
+	.irqs			= pf1550_charger_irqs,
+	.num_irqs		= ARRAY_SIZE(pf1550_charger_irqs),
+};
+
+static const struct resource charger_resources[] = {
+	DEFINE_RES_IRQ(PF1550_CHARG_IRQ_BAT2SOCI),
+	DEFINE_RES_IRQ(PF1550_CHARG_IRQ_BATI),
+	DEFINE_RES_IRQ(PF1550_CHARG_IRQ_CHGI),
+	DEFINE_RES_IRQ(PF1550_CHARG_IRQ_VBUSI),
+	DEFINE_RES_IRQ(PF1550_CHARG_IRQ_THMI),
+};
+
+static const struct mfd_cell pf1550_regulator_cell = {
+	.name = "pf1550-regulator",
+	.num_resources = ARRAY_SIZE(regulator_resources),
+	.resources = regulator_resources,
+};
+
+static const struct mfd_cell pf1550_onkey_cell = {
+	.name = "pf1550-onkey",
+	.num_resources = ARRAY_SIZE(onkey_resources),
+	.resources = onkey_resources,
+};
+
+static const struct mfd_cell pf1550_charger_cell = {
+	.name = "pf1550-charger",
+	.num_resources = ARRAY_SIZE(charger_resources),
+	.resources = charger_resources,
+};
+
+int pf1550_read_otp(const struct pf1550_dev *pf1550, unsigned int index,
+		    unsigned int *val)
+{
+	int ret = 0;
+
+	ret = regmap_write(pf1550->regmap, PF1550_PMIC_REG_KEY, 0x15);
+	if (ret)
+		goto read_err;
+	ret = regmap_write(pf1550->regmap, PF1550_CHARG_REG_CHGR_KEY2, 0x50);
+	if (ret)
+		goto read_err;
+	ret = regmap_write(pf1550->regmap, PF1550_TEST_REG_KEY3, 0xAB);
+	if (ret)
+		goto read_err;
+	ret = regmap_write(pf1550->regmap, PF1550_TEST_REG_FMRADDR, index);
+	if (ret)
+		goto read_err;
+	ret = regmap_read(pf1550->regmap, PF1550_TEST_REG_FMRDATA, val);
+	if (ret)
+		goto read_err;
+
+	return 0;
+
+read_err:
+	dev_err(pf1550->dev, "read otp reg %x found!\n", index);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(pf1550_read_otp);
+
+static int pf1550_add_child_device(struct pf1550_dev *pmic,
+				   const struct mfd_cell *cell,
+				   struct regmap_irq_chip_data *pdata,
+				   int pirq, int irq_flags,
+				   const struct regmap_irq_chip *chip,
+				   struct regmap_irq_chip_data **data)
+{
+	struct device *dev = pmic->dev;
+	struct irq_domain *domain;
+	int irq, ret;
+
+	irq = regmap_irq_get_virq(pdata, pirq);
+	if (irq < 0)
+		return dev_err_probe(dev, irq,
+				     "Failed to get parent vIRQ(%d) for chip %s\n",
+				     pirq, chip->name);
+
+	ret = devm_regmap_add_irq_chip(dev, pmic->regmap, irq,
+				       irq_flags, 0, chip, data);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to add %s IRQ chip\n",
+				     chip->name);
+
+	domain = regmap_irq_get_domain(*data);
+
+	return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, cell, 1,
+				    NULL, 0, domain);
+}
+
+static int pf1550_i2c_probe(struct i2c_client *i2c)
+{
+	struct pf1550_dev *pf1550;
+	const struct mfd_cell *regulator = &pf1550_regulator_cell;
+	const struct mfd_cell *onkey = &pf1550_onkey_cell;
+	const struct mfd_cell *charger = &pf1550_charger_cell;
+	unsigned int reg_data = 0;
+	int ret = 0;
+
+	pf1550 = devm_kzalloc(&i2c->dev, sizeof(*pf1550), GFP_KERNEL);
+	if (!pf1550)
+		return -ENOMEM;
+
+	i2c_set_clientdata(i2c, pf1550);
+	pf1550->dev = &i2c->dev;
+	pf1550->i2c = i2c;
+	pf1550->irq = i2c->irq;
+
+	pf1550->regmap = devm_regmap_init_i2c(i2c, &pf1550_regmap_config);
+	if (IS_ERR(pf1550->regmap))
+		return dev_err_probe(pf1550->dev, PTR_ERR(pf1550->regmap),
+				     "failed to allocate register map\n");
+
+	ret = regmap_read(pf1550->regmap, PF1550_PMIC_REG_DEVICE_ID, &reg_data);
+	if (ret < 0 || reg_data != PF1550_DEVICE_ID)
+		return dev_err_probe(pf1550->dev, ret ?: -EINVAL,
+				     "device not found!\n");
+
+	pf1550->type = PF1550;
+
+	/* add top level interrupts */
+	ret = devm_regmap_add_irq_chip(pf1550->dev, pf1550->regmap, pf1550->irq,
+				       IRQF_ONESHOT | IRQF_SHARED |
+				       IRQF_TRIGGER_FALLING,
+				       0, &pf1550_irq_chip,
+				       &pf1550->irq_data);
+	if (ret)
+		return ret;
+
+	ret = pf1550_add_child_device(pf1550, regulator, pf1550->irq_data,
+				      PF1550_IRQ_REGULATOR, IRQF_ONESHOT |
+				      IRQF_SHARED | IRQF_TRIGGER_FALLING,
+				      &pf1550_regulator_irq_chip,
+				      &pf1550->irq_data_regulator);
+	if (ret)
+		return ret;
+
+	ret = pf1550_add_child_device(pf1550, onkey, pf1550->irq_data,
+				      PF1550_IRQ_ONKEY, IRQF_ONESHOT |
+				      IRQF_SHARED | IRQF_TRIGGER_FALLING,
+				      &pf1550_onkey_irq_chip,
+				      &pf1550->irq_data_onkey);
+	if (ret)
+		return ret;
+
+	ret = pf1550_add_child_device(pf1550, charger, pf1550->irq_data,
+				      PF1550_IRQ_CHG, IRQF_ONESHOT |
+				      IRQF_SHARED | IRQF_TRIGGER_FALLING,
+				      &pf1550_charger_irq_chip,
+				      &pf1550->irq_data_charger);
+	return ret;
+}
+
+static int pf1550_suspend(struct device *dev)
+{
+	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
+	struct pf1550_dev *pf1550 = i2c_get_clientdata(i2c);
+
+	if (device_may_wakeup(dev)) {
+		enable_irq_wake(pf1550->irq);
+		disable_irq(pf1550->irq);
+	}
+
+	return 0;
+}
+
+static int pf1550_resume(struct device *dev)
+{
+	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
+	struct pf1550_dev *pf1550 = i2c_get_clientdata(i2c);
+
+	if (device_may_wakeup(dev)) {
+		disable_irq_wake(pf1550->irq);
+		enable_irq(pf1550->irq);
+	}
+
+	return 0;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(pf1550_pm, pf1550_suspend, pf1550_resume);
+
+static const struct i2c_device_id pf1550_i2c_id[] = {
+	{ "pf1550", 0 },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(i2c, pf1550_i2c_id);
+
+static const struct of_device_id pf1550_dt_match[] = {
+	{ .compatible = "nxp,pf1550" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, pf1550_dt_match);
+
+static struct i2c_driver pf1550_i2c_driver = {
+	.driver = {
+		   .name = "pf1550",
+		   .pm = pm_sleep_ptr(&pf1550_pm),
+		   .of_match_table = pf1550_dt_match,
+	},
+	.probe = pf1550_i2c_probe,
+	.id_table = pf1550_i2c_id,
+};
+module_i2c_driver(pf1550_i2c_driver);
+
+MODULE_DESCRIPTION("NXP PF1550 multi-function core driver");
+MODULE_AUTHOR("Robin Gong <yibin.gong@...escale.com>");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/pf1550.h b/include/linux/mfd/pf1550.h
new file mode 100644
index 0000000000000000000000000000000000000000..0fdf29a1538c080ffdd582e92c5fa811a605cc6e
--- /dev/null
+++ b/include/linux/mfd/pf1550.h
@@ -0,0 +1,259 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * pf1550.h - mfd head file for PF1550
+ *
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Robin Gong <yibin.gong@...escale.com>
+ *
+ * Portions Copyright (c) 2025 Savoir-faire Linux Inc.
+ * Samuel Kayode <samuel.kayode@...oirfairelinux.com>
+ */
+
+#ifndef __LINUX_MFD_PF1550_H
+#define __LINUX_MFD_PF1550_H
+
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+
+enum chips { PF1550 = 1, };
+
+enum pf1550_pmic_reg {
+	/* PMIC regulator part */
+	PF1550_PMIC_REG_DEVICE_ID		= 0x00,
+	PF1550_PMIC_REG_OTP_FLAVOR		= 0x01,
+	PF1550_PMIC_REG_SILICON_REV		= 0x02,
+
+	PF1550_PMIC_REG_INT_CATEGORY		= 0x06,
+	PF1550_PMIC_REG_SW_INT_STAT0		= 0x08,
+	PF1550_PMIC_REG_SW_INT_MASK0		= 0x09,
+	PF1550_PMIC_REG_SW_INT_SENSE0		= 0x0A,
+	PF1550_PMIC_REG_SW_INT_STAT1		= 0x0B,
+	PF1550_PMIC_REG_SW_INT_MASK1		= 0x0C,
+	PF1550_PMIC_REG_SW_INT_SENSE1		= 0x0D,
+	PF1550_PMIC_REG_SW_INT_STAT2		= 0x0E,
+	PF1550_PMIC_REG_SW_INT_MASK2		= 0x0F,
+	PF1550_PMIC_REG_SW_INT_SENSE2		= 0x10,
+	PF1550_PMIC_REG_LDO_INT_STAT0		= 0x18,
+	PF1550_PMIC_REG_LDO_INT_MASK0		= 0x19,
+	PF1550_PMIC_REG_LDO_INT_SENSE0		= 0x1A,
+	PF1550_PMIC_REG_TEMP_INT_STAT0		= 0x20,
+	PF1550_PMIC_REG_TEMP_INT_MASK0		= 0x21,
+	PF1550_PMIC_REG_TEMP_INT_SENSE0		= 0x22,
+	PF1550_PMIC_REG_ONKEY_INT_STAT0		= 0x24,
+	PF1550_PMIC_REG_ONKEY_INT_MASK0		= 0x25,
+	PF1550_PMIC_REG_ONKEY_INT_SENSE0	= 0x26,
+	PF1550_PMIC_REG_MISC_INT_STAT0		= 0x28,
+	PF1550_PMIC_REG_MISC_INT_MASK0		= 0x29,
+	PF1550_PMIC_REG_MISC_INT_SENSE0		= 0x2A,
+
+	PF1550_PMIC_REG_COINCELL_CONTROL	= 0x30,
+
+	PF1550_PMIC_REG_SW1_VOLT		= 0x32,
+	PF1550_PMIC_REG_SW1_STBY_VOLT		= 0x33,
+	PF1550_PMIC_REG_SW1_SLP_VOLT		= 0x34,
+	PF1550_PMIC_REG_SW1_CTRL		= 0x35,
+	PF1550_PMIC_REG_SW1_CTRL1		= 0x36,
+	PF1550_PMIC_REG_SW2_VOLT		= 0x38,
+	PF1550_PMIC_REG_SW2_STBY_VOLT		= 0x39,
+	PF1550_PMIC_REG_SW2_SLP_VOLT		= 0x3A,
+	PF1550_PMIC_REG_SW2_CTRL		= 0x3B,
+	PF1550_PMIC_REG_SW2_CTRL1		= 0x3C,
+	PF1550_PMIC_REG_SW3_VOLT		= 0x3E,
+	PF1550_PMIC_REG_SW3_STBY_VOLT		= 0x3F,
+	PF1550_PMIC_REG_SW3_SLP_VOLT		= 0x40,
+	PF1550_PMIC_REG_SW3_CTRL		= 0x41,
+	PF1550_PMIC_REG_SW3_CTRL1		= 0x42,
+	PF1550_PMIC_REG_VSNVS_CTRL		= 0x48,
+	PF1550_PMIC_REG_VREFDDR_CTRL		= 0x4A,
+	PF1550_PMIC_REG_LDO1_VOLT		= 0x4C,
+	PF1550_PMIC_REG_LDO1_CTRL		= 0x4D,
+	PF1550_PMIC_REG_LDO2_VOLT		= 0x4F,
+	PF1550_PMIC_REG_LDO2_CTRL		= 0x50,
+	PF1550_PMIC_REG_LDO3_VOLT		= 0x52,
+	PF1550_PMIC_REG_LDO3_CTRL		= 0x53,
+	PF1550_PMIC_REG_PWRCTRL0		= 0x58,
+	PF1550_PMIC_REG_PWRCTRL1		= 0x59,
+	PF1550_PMIC_REG_PWRCTRL2		= 0x5A,
+	PF1550_PMIC_REG_PWRCTRL3		= 0x5B,
+	PF1550_PMIC_REG_SW1_PWRDN_SEQ		= 0x5F,
+	PF1550_PMIC_REG_SW2_PWRDN_SEQ		= 0x60,
+	PF1550_PMIC_REG_SW3_PWRDN_SEQ		= 0x61,
+	PF1550_PMIC_REG_LDO1_PWRDN_SEQ		= 0x62,
+	PF1550_PMIC_REG_LDO2_PWRDN_SEQ		= 0x63,
+	PF1550_PMIC_REG_LDO3_PWRDN_SEQ		= 0x64,
+	PF1550_PMIC_REG_VREFDDR_PWRDN_SEQ	= 0x65,
+
+	PF1550_PMIC_REG_STATE_INFO		= 0x67,
+	PF1550_PMIC_REG_I2C_ADDR		= 0x68,
+	PF1550_PMIC_REG_IO_DRV0			= 0x69,
+	PF1550_PMIC_REG_IO_DRV1			= 0x6A,
+	PF1550_PMIC_REG_RC_16MHZ		= 0x6B,
+	PF1550_PMIC_REG_KEY			= 0x6F,
+
+	/* charger part */
+	PF1550_CHARG_REG_CHG_INT		= 0x80,
+	PF1550_CHARG_REG_CHG_INT_MASK		= 0x82,
+	PF1550_CHARG_REG_CHG_INT_OK		= 0x84,
+	PF1550_CHARG_REG_VBUS_SNS		= 0x86,
+	PF1550_CHARG_REG_CHG_SNS		= 0x87,
+	PF1550_CHARG_REG_BATT_SNS		= 0x88,
+	PF1550_CHARG_REG_CHG_OPER		= 0x89,
+	PF1550_CHARG_REG_CHG_TMR		= 0x8A,
+	PF1550_CHARG_REG_CHG_EOC_CNFG		= 0x8D,
+	PF1550_CHARG_REG_CHG_CURR_CNFG		= 0x8E,
+	PF1550_CHARG_REG_BATT_REG		= 0x8F,
+	PF1550_CHARG_REG_BATFET_CNFG		= 0x91,
+	PF1550_CHARG_REG_THM_REG_CNFG		= 0x92,
+	PF1550_CHARG_REG_VBUS_INLIM_CNFG	= 0x94,
+	PF1550_CHARG_REG_VBUS_LIN_DPM		= 0x95,
+	PF1550_CHARG_REG_USB_PHY_LDO_CNFG	= 0x96,
+	PF1550_CHARG_REG_DBNC_DELAY_TIME	= 0x98,
+	PF1550_CHARG_REG_CHG_INT_CNFG		= 0x99,
+	PF1550_CHARG_REG_THM_ADJ_SETTING	= 0x9A,
+	PF1550_CHARG_REG_VBUS2SYS_CNFG		= 0x9B,
+	PF1550_CHARG_REG_LED_PWM		= 0x9C,
+	PF1550_CHARG_REG_FAULT_BATFET_CNFG	= 0x9D,
+	PF1550_CHARG_REG_LED_CNFG		= 0x9E,
+	PF1550_CHARG_REG_CHGR_KEY2		= 0x9F,
+
+	PF1550_TEST_REG_FMRADDR			= 0xC4,
+	PF1550_TEST_REG_FMRDATA			= 0xC5,
+	PF1550_TEST_REG_KEY3			= 0xDF,
+
+	PF1550_PMIC_REG_END			= 0xff,
+};
+
+#define PF1550_DEVICE_ID		0x7c
+
+#define PF1550_CHG_TURNON		0x2
+
+#define PF1550_CHG_PRECHARGE		0
+#define PF1550_CHG_CONSTANT_CURRENT	1
+#define PF1550_CHG_CONSTANT_VOL		2
+#define PF1550_CHG_EOC			3
+#define PF1550_CHG_DONE			4
+#define PF1550_CHG_TIMER_FAULT		6
+#define PF1550_CHG_SUSPEND		7
+#define PF1550_CHG_OFF_INV		8
+#define PF1550_CHG_BAT_OVER		9
+#define PF1550_CHG_OFF_TEMP		10
+#define PF1550_CHG_LINEAR_ONLY		12
+#define PF1550_CHG_SNS_MASK		0xf
+#define PF1550_CHG_INT_MASK             0x51
+
+#define PF1550_BAT_NO_VBUS		0
+#define PF1550_BAT_LOW_THAN_PRECHARG	1
+#define PF1550_BAT_CHARG_FAIL		2
+#define PF1550_BAT_HIGH_THAN_PRECHARG	4
+#define PF1550_BAT_OVER_VOL		5
+#define	PF1550_BAT_NO_DETECT		6
+#define PF1550_BAT_SNS_MASK		0x7
+
+#define PF1550_VBUS_UVLO		BIT(2)
+#define PF1550_VBUS_IN2SYS		BIT(3)
+#define PF1550_VBUS_OVLO		BIT(4)
+#define PF1550_VBUS_VALID		BIT(5)
+
+#define PF1550_CHARG_REG_BATT_REG_CHGCV_MASK		0x3f
+#define PF1550_CHARG_REG_BATT_REG_VMINSYS_SHIFT		6
+#define PF1550_CHARG_REG_BATT_REG_VMINSYS_MASK		(0x3 << 6)
+#define PF1550_CHARG_REG_THM_REG_CNFG_REGTEMP_SHIFT	2
+#define PF1550_CHARG_REG_THM_REG_CNFG_REGTEMP_MASK	(0x3 << 2)
+
+/* top level interrupt masks */
+#define IRQ_REGULATOR		(BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(6))
+#define IRQ_ONKEY		BIT(5)
+#define IRQ_CHG			BIT(0)
+
+/* regulator interrupt masks */
+#define PMIC_IRQ_SW1_LS		BIT(0)
+#define PMIC_IRQ_SW2_LS		BIT(1)
+#define PMIC_IRQ_SW3_LS		BIT(2)
+#define PMIC_IRQ_SW1_HS		BIT(0)
+#define PMIC_IRQ_SW2_HS		BIT(1)
+#define PMIC_IRQ_SW3_HS		BIT(2)
+#define PMIC_IRQ_LDO1_FAULT	BIT(0)
+#define PMIC_IRQ_LDO2_FAULT	BIT(1)
+#define PMIC_IRQ_LDO3_FAULT	BIT(2)
+#define PMIC_IRQ_TEMP_110	BIT(0)
+#define PMIC_IRQ_TEMP_125	BIT(1)
+
+/* onkey interrupt masks */
+#define ONKEY_IRQ_PUSHI		BIT(0)
+#define ONKEY_IRQ_1SI		BIT(1)
+#define ONKEY_IRQ_2SI		BIT(2)
+#define ONKEY_IRQ_3SI		BIT(3)
+#define ONKEY_IRQ_4SI		BIT(4)
+#define ONKEY_IRQ_8SI		BIT(5)
+
+/* charger interrupt masks */
+#define CHARG_IRQ_BAT2SOCI	BIT(1)
+#define CHARG_IRQ_BATI		BIT(2)
+#define CHARG_IRQ_CHGI		BIT(3)
+#define CHARG_IRQ_VBUSI		BIT(5)
+#define CHARG_IRQ_DPMI		BIT(6)
+#define CHARG_IRQ_THMI		BIT(7)
+
+enum pf1550_irq {
+	PF1550_IRQ_CHG,
+	PF1550_IRQ_REGULATOR,
+	PF1550_IRQ_ONKEY,
+};
+
+enum pf1550_pmic_irq {
+	PF1550_PMIC_IRQ_SW1_LS,
+	PF1550_PMIC_IRQ_SW2_LS,
+	PF1550_PMIC_IRQ_SW3_LS,
+	PF1550_PMIC_IRQ_SW1_HS,
+	PF1550_PMIC_IRQ_SW2_HS,
+	PF1550_PMIC_IRQ_SW3_HS,
+	PF1550_PMIC_IRQ_LDO1_FAULT,
+	PF1550_PMIC_IRQ_LDO2_FAULT,
+	PF1550_PMIC_IRQ_LDO3_FAULT,
+	PF1550_PMIC_IRQ_TEMP_110,
+	PF1550_PMIC_IRQ_TEMP_125,
+};
+
+enum pf1550_onkey_irq {
+	PF1550_ONKEY_IRQ_PUSHI,
+	PF1550_ONKEY_IRQ_1SI,
+	PF1550_ONKEY_IRQ_2SI,
+	PF1550_ONKEY_IRQ_3SI,
+	PF1550_ONKEY_IRQ_4SI,
+	PF1550_ONKEY_IRQ_8SI,
+};
+
+enum pf1550_charg_irq {
+	PF1550_CHARG_IRQ_BAT2SOCI,
+	PF1550_CHARG_IRQ_BATI,
+	PF1550_CHARG_IRQ_CHGI,
+	PF1550_CHARG_IRQ_VBUSI,
+	PF1550_CHARG_IRQ_THMI,
+};
+
+enum pf1550_regulators {
+	PF1550_SW1,
+	PF1550_SW2,
+	PF1550_SW3,
+	PF1550_VREFDDR,
+	PF1550_LDO1,
+	PF1550_LDO2,
+	PF1550_LDO3,
+};
+
+struct pf1550_dev {
+	struct device *dev;
+	struct i2c_client *i2c;
+	int type;
+	struct regmap *regmap;
+	struct regmap_irq_chip_data *irq_data_regulator;
+	struct regmap_irq_chip_data *irq_data_onkey;
+	struct regmap_irq_chip_data *irq_data_charger;
+	struct regmap_irq_chip_data *irq_data;
+	int irq;
+};
+
+int pf1550_read_otp(const struct pf1550_dev *pf1550, unsigned int index,
+		    unsigned int *val);
+
+#endif /* __LINUX_MFD_PF1550_H */

-- 
2.49.0

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