Date:	Mon, 16 Nov 2015 11:07:37 +0900
From:	James Bans <James.Ban.opensource@...semi.com>
To:	LINUXKERNEL <linux-kernel@...r.kernel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>
CC:	David Dajun Chen <david.chen@...semi.com>,
	Support Opensource <support.opensource@...semi.com>
Subject: [PATCH V1] regulator: pv88090: new regulator driver


From: James Ban <James.Ban.opensource@...semi.com>

This is the driver for the Powerventure PV88090 BUCKs and LDOs regulator.
It communicates via an I2C bus to the device.

Signed-off-by: James Ban <James.Ban..opensource@...semi.com>

---
This patch applies against linux-next and next-20151110 


 .../devicetree/bindings/regulator/pv88090.txt      |   65 +++
 drivers/regulator/Kconfig                          |    8 +
 drivers/regulator/Makefile                         |    1 +
 drivers/regulator/pv88090-regulator.c              |  482 ++++++++++++++++++++
 drivers/regulator/pv88090-regulator.h              |   78 ++++
 include/linux/regulator/pv88090.h                  |   28 ++
 6 files changed, 662 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/pv88090.txt
 create mode 100644 drivers/regulator/pv88090-regulator.c
 create mode 100644 drivers/regulator/pv88090-regulator.h
 create mode 100644 include/linux/regulator/pv88090.h

diff --git a/Documentation/devicetree/bindings/regulator/pv88090.txt b/Documentation/devicetree/bindings/regulator/pv88090.txt
new file mode 100644
index 0000000..39a121f
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/pv88090.txt
@@ -0,0 +1,65 @@
+* Powerventure Semiconductor PV88090 Voltage Regulator
+
+Required properties:
+- compatible: "pvs,pv88090".
+- reg: I2C slave address, usually 0x48.
+- interrupts: the interrupt outputs of the controller
+- regulators: A node that houses a sub-node for each regulator within the
+  device. Each sub-node is identified using the node's name, with valid
+  values listed below. The content of each sub-node is defined by the
+  standard binding for regulators; see regulator.txt.
+  BUCK1, BUCK2, BUCK3, LDO1, and LDO2.
+
+Optional properties:
+- Any optional property defined in regulator.txt
+
+Example
+
+	pmic: pv88090@48 {
+		compatible = "pvs,pv88090";
+		reg = <0x48>;
+		interrupt-parent = <&gpio>;
+		interrupts = <24 24>;
+
+		regulators {
+			BUCK1 {
+				regulator-name = "buck1";
+				regulator-min-microvolt = < 600000>;
+				regulator-max-microvolt = <1393750>;
+				regulator-min-microamp 	= < 220000>;
+				regulator-max-microamp 	= <7040000>;
+				regulator-boot-on;
+			};
+
+			BUCK2 {
+				regulator-name = "buck2";
+				regulator-min-microvolt = < 600000>;
+				regulator-max-microvolt = <1393750>;
+				regulator-min-microamp 	= <1496000>;
+				regulator-max-microamp 	= <4189000>;
+			};
+
+			BUCK3 {
+				regulator-name = "buck3";
+				regulator-min-microvolt = <1400000>;
+				regulator-max-microvolt = <2193750>;
+				regulator-min-microamp 	= <1496000>;
+				regulator-max-microamp 	= <4189000>;
+				regulator-boot-on;
+			};
+
+			LDO1 {
+				regulator-name = "ldo1";
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <4350000>;
+				regulator-boot-on;
+			};
+
+			LDO2 {
+				regulator-name = "ldo2";
+				regulator-min-microvolt = < 650000>;
+				regulator-max-microvolt = <2225000>;
+				regulator-boot-on;
+			};
+		};
+	};
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 8df0b0e..1e27bd8 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -504,6 +504,14 @@ config REGULATOR_PFUZE100
 	  Say y here to support the regulators found on the Freescale
 	  PFUZE100/PFUZE200 PMIC.
 
+config REGULATOR_PV88090
+	tristate "Powerventure Semiconductor PV88090 regulator"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say y here to support the voltage regulators and convertors
+	  on PV88090
+
 config REGULATOR_PWM
 	tristate "PWM voltage regulator"
 	depends on PWM
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 0f81749..5c1c09a 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -66,6 +66,7 @@ obj-$(CONFIG_REGULATOR_QCOM_SMD_RPM) += qcom_smd-regulator.o
 obj-$(CONFIG_REGULATOR_QCOM_SPMI) += qcom_spmi-regulator.o
 obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
 obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o
+obj-$(CONFIG_REGULATOR_PV88090) += pv88090-regulator.o
 obj-$(CONFIG_REGULATOR_PWM) += pwm-regulator.o
 obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o
 obj-$(CONFIG_REGULATOR_PBIAS) += pbias-regulator.o
diff --git a/drivers/regulator/pv88090-regulator.c b/drivers/regulator/pv88090-regulator.c
new file mode 100644
index 0000000..75b8001
--- /dev/null
+++ b/drivers/regulator/pv88090-regulator.c
@@ -0,0 +1,482 @@
+/*
+ * pv88090-regulator.c - Regulator device driver for PV88090
+ * Copyright (C) 2015  Powerventure Semiconductor Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regmap.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/proc_fs.h>
+#include <linux/uaccess.h>
+#include <linux/regulator/pv88090.h>
+#include "pv88090-regulator.h"
+
+/* PV88090 REGULATOR IDs */
+enum {
+	/* BUCKs */
+	PV88090_ID_BUCK1,
+	PV88090_ID_BUCK2,
+	PV88090_ID_BUCK3,
+
+	/* LDOs */
+	PV88090_ID_LDO1,
+	PV88090_ID_LDO2,
+};
+
+struct pv88090_regulator {
+	struct regulator_desc desc;
+	/* Current limiting */
+	unsigned	n_current_limits;
+	const int	*current_limits;
+	unsigned int limit_mask;
+	unsigned int conf;		/* buck configuration register */
+};
+
+struct pv88090 {
+	struct device *dev;
+	struct regmap *regmap;
+	struct pv88090_pdata *pdata;
+	struct regulator_dev *rdev[PV88090_MAX_REGULATORS];
+};
+
+static const struct regmap_config pv88090_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+};
+
+/* Current limits array (in uA) for BUCK1, BUCK2, BUCK3.
+ *  Entry indexes corresponds to register values.
+ */
+
+static const int pv88090_buck1_limits[] = {
+	 220000,  440000,  660000,  880000, 1100000, 1320000, 1540000, 1760000,
+	1980000, 2200000, 2420000, 2640000, 2860000, 3080000, 3300000, 3520000,
+	3740000, 3960000, 4180000, 4400000, 4620000, 4840000, 5060000, 5280000,
+	5500000, 5720000, 5940000, 6160000, 6380000, 6600000, 6820000, 7040000
+};
+
+static const int pv88090_buck2_limits[] = {
+	1496000, 2393000, 3291000, 4189000
+};
+
+static const int pv88090_buck3_limits[] = {
+	1496000, 2393000, 3291000, 4189000
+};
+
+static unsigned int pv88090_buck_get_mode(struct regulator_dev *rdev)
+{
+	struct pv88090_regulator *info = rdev_get_drvdata(rdev);
+	unsigned int data;
+	int ret, mode = 0;
+
+	ret = regmap_read(rdev->regmap, info->conf, &data);
+	if (ret < 0)
+		return ret;
+
+	switch (data & PV88090_BUCK1_MODE_MASK) {
+	case PV88090_BUCK_MODE_SYNC:
+		mode = REGULATOR_MODE_FAST;
+		break;
+	case PV88090_BUCK_MODE_AUTO:
+		mode = REGULATOR_MODE_NORMAL;
+		break;
+	case PV88090_BUCK_MODE_SLEEP:
+		mode = REGULATOR_MODE_STANDBY;
+		break;
+	}
+
+	return mode;
+}
+
+static int pv88090_buck_set_mode(struct regulator_dev *rdev,
+					unsigned int mode)
+{
+	struct pv88090_regulator *info = rdev_get_drvdata(rdev);
+	int val = 0;
+
+	switch (mode) {
+	case REGULATOR_MODE_FAST:
+		val = PV88090_BUCK_MODE_SYNC;
+		break;
+	case REGULATOR_MODE_NORMAL:
+		val = PV88090_BUCK_MODE_AUTO;
+		break;
+	case REGULATOR_MODE_STANDBY:
+		val = PV88090_BUCK_MODE_SLEEP;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return regmap_update_bits(rdev->regmap, info->conf,
+					PV88090_BUCK1_MODE_MASK, val);
+}
+
+static int pv88090_set_current_limit(struct regulator_dev *rdev, int min,
+				    int max)
+{
+	struct pv88090_regulator *info = rdev_get_drvdata(rdev);
+	int i;
+
+	/* search for closest to maximum */
+	for (i = info->n_current_limits; i >= 0; i--) {
+		if (min <= info->current_limits[i]
+			&& max >= info->current_limits[i]) {
+			return regmap_update_bits(rdev->regmap,
+				info->conf,
+				info->limit_mask,
+				i << PV88090_BUCK1_ILIM_SHIFT);
+		}
+	}
+
+	return -EINVAL;
+}
+
+static int pv88090_get_current_limit(struct regulator_dev *rdev)
+{
+	struct pv88090_regulator *info = rdev_get_drvdata(rdev);
+	unsigned int data;
+	int ret;
+
+	ret = regmap_read(rdev->regmap, info->conf, &data);
+	if (ret < 0)
+		return ret;
+
+	data = (data & info->limit_mask) >> PV88090_BUCK1_ILIM_SHIFT;
+	return info->current_limits[data];
+}
+
+static struct regulator_ops pv88090_buck_ops = {
+	.get_mode = pv88090_buck_get_mode,
+	.set_mode = pv88090_buck_set_mode,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.list_voltage = regulator_list_voltage_linear,
+	.set_current_limit = pv88090_set_current_limit,
+	.get_current_limit = pv88090_get_current_limit,
+};
+
+static struct regulator_ops pv88090_ldo_ops = {
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.list_voltage = regulator_list_voltage_linear,
+};
+
+#define PV88090_BUCK(chip, regl_name, min, step, max, limits_array) \
+{\
+	.desc.id = chip##_ID_##regl_name,\
+	.desc.name = __stringify(chip##_##regl_name),\
+	.desc.type = REGULATOR_VOLTAGE,\
+	.desc.owner = THIS_MODULE,\
+	.desc.ops = &pv88090_buck_ops,\
+	.desc.min_uV = min, \
+	.desc.uV_step = step, \
+	.desc.n_voltages = ((max) - (min))/(step) + 1, \
+	.desc.enable_reg = PV88090_REG_##regl_name##_CONF0, \
+	.desc.enable_mask = PV88090_##regl_name##_EN, \
+	.desc.vsel_reg = PV88090_REG_##regl_name##_CONF0, \
+	.desc.vsel_mask = PV88090_V##regl_name##_MASK, \
+	.current_limits = limits_array, \
+	.n_current_limits = ARRAY_SIZE(limits_array), \
+	.limit_mask = PV88090_##regl_name##_ILIM_MASK, \
+	.conf = PV88090_REG_##regl_name##_CONF1, \
+}
+
+#define PV88090_LDO(chip, regl_name, min, step, max) \
+{\
+	.desc.id = chip##_ID_##regl_name,\
+	.desc.name = __stringify(chip##_##regl_name),\
+	.desc.type = REGULATOR_VOLTAGE,\
+	.desc.owner = THIS_MODULE,\
+	.desc.ops = &pv88090_ldo_ops,\
+	.desc.min_uV = min, \
+	.desc.uV_step = step, \
+	.desc.n_voltages = ((max) - (min))/(step) + 1, \
+	.desc.enable_reg = PV88090_REG_##regl_name##_CONT, \
+	.desc.enable_mask = PV88090_##regl_name##_EN, \
+	.desc.vsel_reg = PV88090_REG_##regl_name##_CONT, \
+	.desc.vsel_mask = PV88090_V##regl_name##_MASK, \
+}
+
+static const struct pv88090_regulator pv88090_regulator_info[] = {
+	PV88090_BUCK(PV88090, BUCK1, 600000, 6250, 1393750,
+		pv88090_buck1_limits),
+	PV88090_BUCK(PV88090, BUCK2, 600000, 6250, 1393750,
+		pv88090_buck2_limits),
+	PV88090_BUCK(PV88090, BUCK3, 1400000, 6250, 2193750,
+		pv88090_buck3_limits),
+	PV88090_LDO(PV88090, LDO1, 1200000, 50000, 4350000),
+	PV88090_LDO(PV88090, LDO2,  650000, 25000, 2225000),
+};
+
+#ifdef CONFIG_OF
+static struct of_regulator_match pv88090_matches[] = {
+	[PV88090_ID_BUCK1] = { .name = "BUCK1" },
+	[PV88090_ID_BUCK2] = { .name = "BUCK2" },
+	[PV88090_ID_BUCK3] = { .name = "BUCK3" },
+	[PV88090_ID_LDO1] = { .name = "LDO1" },
+	[PV88090_ID_LDO2] = { .name = "LDO2" },
+};
+
+static struct pv88090_pdata *pv88090_parse_regulators_dt(
+		struct device *dev)
+{
+	struct pv88090_pdata *pdata;
+	struct device_node *node;
+	int i, num, n;
+
+	node = of_get_child_by_name(dev->of_node, "regulators");
+	if (!node) {
+		dev_err(dev, "regulators node not found\n");
+		return ERR_PTR(-ENODEV);
+	}
+
+	num = of_regulator_match(dev, node, pv88090_matches,
+				 ARRAY_SIZE(pv88090_matches));
+	of_node_put(node);
+	if (num < 0) {
+		dev_err(dev, "Failed to match regulators\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return ERR_PTR(-ENOMEM);
+
+	pdata->num_regulator = num;
+
+	n = 0;
+	for (i = 0; i < ARRAY_SIZE(pv88090_matches); i++) {
+		if (!pv88090_matches[i].init_data)
+			continue;
+
+		if (i < PV88090_ID_LDO1) {
+			pv88090_matches[i].init_data->constraints
+				.valid_modes_mask
+				|=	REGULATOR_MODE_FAST
+				| REGULATOR_MODE_NORMAL
+				| REGULATOR_MODE_STANDBY;
+			pv88090_matches[i].init_data->constraints.valid_ops_mask
+				|=	REGULATOR_CHANGE_MODE;
+		}
+
+		pdata->init_data[n] = pv88090_matches[i].init_data;
+		pdata->reg_node[n] = pv88090_matches[i].of_node;
+		n++;
+	};
+
+	return pdata;
+}
+#else
+static struct pv88090_pdata *pv88090_parse_regulators_dt(
+		struct device *dev)
+{
+	return ERR_PTR(-ENODEV);
+}
+#endif
+
+static irqreturn_t pv88090_irq_handler(int irq, void *data)
+{
+	struct pv88090 *chip = data;
+	int i, reg_val, err, ret = IRQ_NONE;
+
+	err = regmap_read(chip->regmap, PV88090_REG_EVENT_A, &reg_val);
+	if (err < 0)
+		goto error_i2c;
+
+	if (reg_val & PV88090_E_VDD_FLT) {
+		for (i = 0; i < PV88090_MAX_REGULATORS; i++) {
+			if (chip->rdev[i] != NULL) {
+				regulator_notifier_call_chain(chip->rdev[i],
+					REGULATOR_EVENT_UNDER_VOLTAGE,
+					NULL);
+			}
+		}
+
+		err = regmap_update_bits(chip->regmap, PV88090_REG_EVENT_A,
+			PV88090_E_VDD_FLT, PV88090_E_VDD_FLT);
+		if (err < 0)
+			goto error_i2c;
+
+		ret = IRQ_HANDLED;
+	}
+
+	if (reg_val & PV88090_E_OVER_TEMP) {
+		for (i = 0; i < PV88090_MAX_REGULATORS; i++) {
+			if (chip->rdev[i] != NULL) {
+				regulator_notifier_call_chain(chip->rdev[i],
+					REGULATOR_EVENT_OVER_TEMP,
+					NULL);
+			}
+		}
+
+		err = regmap_update_bits(chip->regmap, PV88090_REG_EVENT_A,
+			PV88090_E_OVER_TEMP, PV88090_E_OVER_TEMP);
+		if (err < 0)
+			goto error_i2c;
+
+		ret = IRQ_HANDLED;
+	}
+
+	return ret;
+
+error_i2c:
+	dev_err(chip->dev, "I2C error : %d\n", err);
+	return IRQ_NONE;
+}
+
+static int pv88090_regulator_init(struct pv88090 *chip)
+{
+	struct regulator_config config = { };
+	int i;
+
+	for (i = 0; i < chip->pdata->num_regulator; i++) {
+		config.init_data = chip->pdata->init_data[i];
+		config.dev = chip->dev;
+		config.driver_data = (void *)&pv88090_regulator_info[i];
+		config.regmap = chip->regmap;
+		config.of_node = chip->pdata->reg_node[i];
+		chip->rdev[i] = regulator_register(
+			&pv88090_regulator_info[i].desc, &config);
+		if (IS_ERR(chip->rdev[i])) {
+			dev_err(chip->dev,
+				"Failed to register PV88090 regulator\n");
+			return PTR_ERR(chip->rdev[i]);
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * I2C driver interface functions
+ */
+static int pv88090_i2c_probe(struct i2c_client *i2c,
+		const struct i2c_device_id *id)
+{
+	struct pv88090 *chip;
+	int error, ret;
+
+	chip = devm_kzalloc(&i2c->dev, sizeof(struct pv88090), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	chip->dev = &i2c->dev;
+	chip->regmap = devm_regmap_init_i2c(i2c, &pv88090_regmap_config);
+	if (IS_ERR(chip->regmap)) {
+		error = PTR_ERR(chip->regmap);
+		dev_err(chip->dev, "Failed to allocate register map: %d\n",
+			error);
+		return error;
+	}
+
+	i2c_set_clientdata(i2c, chip);
+
+	chip->pdata = i2c->dev.platform_data;
+
+	if (!chip->pdata)
+		chip->pdata = pv88090_parse_regulators_dt(chip->dev);
+
+	if (IS_ERR(chip->pdata)) {
+		dev_err(chip->dev, "No regulators defined for the platform\n");
+		return PTR_ERR(chip->pdata);
+	}
+
+	if (i2c->irq != 0) {
+		ret = regmap_write(chip->regmap, PV88090_REG_MASK_A, 0xFF);
+		if (ret < 0) {
+			dev_err(chip->dev,
+				"Failed to mask A reg: %d\n", ret);
+			return ret;
+		}
+		regmap_write(chip->regmap, PV88090_REG_MASK_B, 0xFF);
+		if (ret < 0) {
+			dev_err(chip->dev,
+				"Failed to mask B reg: %d\n", ret);
+			return ret;
+		}
+
+		ret = request_threaded_irq(i2c->irq, NULL,
+					pv88090_irq_handler,
+					IRQF_TRIGGER_LOW|IRQF_ONESHOT,
+					"pv88090", chip);
+		if (ret != 0) {
+			dev_err(chip->dev, "Failed to request IRQ: %d\n",
+				i2c->irq);
+			return ret;
+		}
+
+		ret = regmap_update_bits(chip->regmap, PV88090_REG_MASK_A,
+			PV88090_M_VDD_FLT | PV88090_M_OVER_TEMP, 0);
+		if (ret < 0) {
+			dev_err(chip->dev,
+				"Failed to update mask reg: %d\n", ret);
+			return ret;
+		}
+
+	} else {
+		dev_warn(chip->dev, "No IRQ configured\n");
+	}
+
+	ret = pv88090_regulator_init(chip);
+
+	if (ret < 0)
+		dev_err(chip->dev, "Failed to initialize regulator: %d\n", ret);
+
+	return ret;
+}
+
+static const struct i2c_device_id pv88090_i2c_id[] = {
+	{"pv88090", 0},
+	{},
+};
+MODULE_DEVICE_TABLE(i2c, pv88090_i2c_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id pv88090_dt_ids[] = {
+	{ .compatible = "pvs,pv88090", .data = &pv88090_i2c_id[0] },
+	{},
+};
+MODULE_DEVICE_TABLE(of, pv88090_dt_ids);
+#endif
+
+static struct i2c_driver pv88090_regulator_driver = {
+	.driver = {
+		.name = "pv88090",
+		.owner = THIS_MODULE,
+		.of_match_table = of_match_ptr(pv88090_dt_ids),
+	},
+	.probe = pv88090_i2c_probe,
+	.id_table = pv88090_i2c_id,
+};
+
+module_i2c_driver(pv88090_regulator_driver);
+
+MODULE_AUTHOR("James Ban <James.Ban.opensource@...semi.com>");
+MODULE_DESCRIPTION("Regulator device driver for Powerventure PV88090");
+MODULE_LICENSE("GPL");
diff --git a/drivers/regulator/pv88090-regulator.h b/drivers/regulator/pv88090-regulator.h
new file mode 100644
index 0000000..e825085
--- /dev/null
+++ b/drivers/regulator/pv88090-regulator.h
@@ -0,0 +1,78 @@
+/*
+ * pv88090-regulator.h - Regulator definitions for PV88090
+ * Copyright (C) 2015 Powerventure Semiconductor Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __PV88090_REGISTERS_H__
+#define __PV88090_REGISTERS_H__
+
+/* System Control and Event Registers */
+#define	PV88090_REG_EVENT_A			0x03
+#define	PV88090_REG_MASK_A			0x06
+#define	PV88090_REG_MASK_B			0x07
+
+/* Regulator Registers */
+#define	PV88090_REG_BUCK1_CONF0			0x18
+#define	PV88090_REG_BUCK1_CONF1			0x19
+#define	PV88090_REG_BUCK2_CONF0			0x1b
+#define	PV88090_REG_BUCK2_CONF1			0x1c
+#define	PV88090_REG_BUCK3_CONF0			0x1d
+#define	PV88090_REG_BUCK3_CONF1			0x1e
+#define	PV88090_REG_LDO1_CONT				0x1f
+#define	PV88090_REG_LDO2_CONT				0x20
+#define	PV88090_REG_LDO3_CONT				0x21
+
+/* PV88090_REG_EVENT_A (addr=0x03) */
+#define	PV88090_E_VDD_FLT				0x01
+#define	PV88090_E_OVER_TEMP			0x02
+
+/* PV88090_REG_MASK_A (addr=0x06) */
+#define	PV88090_M_VDD_FLT				0x01
+#define	PV88090_M_OVER_TEMP			0x02
+
+/* PV88090_REG_BUCK1_CONF0 (addr=0x18) */
+#define	PV88090_BUCK1_EN				0x80
+#define PV88090_VBUCK1_MASK			0x7F
+/* PV88090_REG_BUCK2_CONF0 (addr=0x1b) */
+#define	PV88090_BUCK2_EN				0x80
+#define PV88090_VBUCK2_MASK			0x7F
+/* PV88090_REG_BUCK3_CONF0 (addr=0x1d) */
+#define	PV88090_BUCK3_EN				0x80
+#define PV88090_VBUCK3_MASK			0x7F
+/* PV88090_REG_LDO1_CONT (addr=0x1f) */
+#define	PV88090_LDO1_EN				0x40
+#define PV88090_VLDO1_MASK			0x3F
+/* PV88090_REG_LDO2_CONT (addr=0x20) */
+#define	PV88090_LDO2_EN				0x40
+#define PV88090_VLDO2_MASK			0x3F
+
+/* PV88090_REG_BUCK1_CONF1 (addr=0x19) */
+#define PV88090_BUCK1_ILIM_SHIFT			2
+#define PV88090_BUCK1_ILIM_MASK			0x7C
+#define PV88090_BUCK1_MODE_MASK			0x03
+
+/* PV88090_REG_BUCK2_CONF1 (addr=0x1c) */
+#define PV88090_BUCK2_ILIM_SHIFT			2
+#define PV88090_BUCK2_ILIM_MASK			0x0C
+#define PV88090_BUCK2_MODE_MASK			0x03
+
+/* PV88090_REG_BUCK3_CONF1 (addr=0x1e) */
+#define PV88090_BUCK3_ILIM_SHIFT			2
+#define PV88090_BUCK3_ILIM_MASK			0x0C
+#define PV88090_BUCK3_MODE_MASK			0x03
+
+#define	PV88090_BUCK_MODE_SLEEP			0x00
+#define	PV88090_BUCK_MODE_AUTO			0x01
+#define	PV88090_BUCK_MODE_SYNC			0x02
+
+#endif	/* __PV88090_REGISTERS_H__ */
diff --git a/include/linux/regulator/pv88090.h b/include/linux/regulator/pv88090.h
new file mode 100644
index 0000000..dd7f963
--- /dev/null
+++ b/include/linux/regulator/pv88090.h
@@ -0,0 +1,28 @@
+/*
+ * pv88090.h - Regulator device driver for PV88090
+ * Copyright (C) 2015 Powerventure Semiconductor Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __LINUX_REGULATOR_PV88090_H
+#define __LINUX_REGULATOR_PV88090_H
+
+#include <linux/regulator/machine.h>
+
+#define PV88090_MAX_REGULATORS	5
+
+struct pv88090_pdata {
+	int num_regulator;
+	struct device_node *reg_node[PV88090_MAX_REGULATORS];
+	struct regulator_init_data *init_data[PV88090_MAX_REGULATORS];
+};
+#endif
-- 
end-of-patch for PATCH V1

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