[PATCH V1] regulator: pv88060: new regulator driver

From: James Ban
Date: Tue Nov 17 2015 - 00:19:24 EST


From: James Ban <James.Ban.opensource@xxxxxxxxxxx>

This is the driver for the Powerventure PV88060 BUCKs and LDOs regulator.
It communicates via an I2C bus to the device.

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

---
This patch applies against linux-next and next-20151115


.../devicetree/bindings/regulator/pv88060.txt | 124 +++++
drivers/regulator/Kconfig | 8 +
drivers/regulator/Makefile | 1 +
drivers/regulator/pv88060-regulator.c | 517 ++++++++++++++++++++
drivers/regulator/pv88060-regulator.h | 69 +++
include/linux/regulator/pv88060.h | 28 ++
6 files changed, 747 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/pv88060.txt
create mode 100644 drivers/regulator/pv88060-regulator.c
create mode 100644 drivers/regulator/pv88060-regulator.h
create mode 100644 include/linux/regulator/pv88060.h

diff --git a/Documentation/devicetree/bindings/regulator/pv88060.txt b/Documentation/devicetree/bindings/regulator/pv88060.txt
new file mode 100644
index 0000000..10a6dad
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/pv88060.txt
@@ -0,0 +1,124 @@
+* Powerventure Semiconductor PV88060 Voltage Regulator
+
+Required properties:
+- compatible: "pvs,pv88060".
+- reg: I2C slave address, usually 0x49.
+- 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, LDO1, LDO2, LDO3, LDO4, LDO5, LDO6, LDO7, SW1, SW2, SW3, SW4,
+ SW5, and SW6.
+
+Optional properties:
+- Any optional property defined in regulator.txt
+
+Example
+
+ pmic: pv88060@49 {
+ compatible = "pvs,pv88060";
+ reg = <0x49>;
+ interrupt-parent = <&gpio>;
+ interrupts = <24 24>;
+
+ regulators {
+ BUCK1 {
+ regulator-name = "buck1";
+ regulator-min-microvolt = <2800000>;
+ regulator-max-microvolt = <4387500>;
+ regulator-min-microamp = <1496000>;
+ regulator-max-microamp = <4189000>;
+ regulator-boot-on;
+ };
+
+ LDO1 {
+ regulator-name = "ldo1";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3350000>;
+ regulator-boot-on;
+ };
+
+ LDO2 {
+ regulator-name = "ldo2";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3350000>;
+ regulator-boot-on;
+ };
+
+ LDO3 {
+ regulator-name = "ldo3";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3350000>;
+ regulator-boot-on;
+ };
+
+ LDO4 {
+ regulator-name = "ldo4";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3350000>;
+ regulator-boot-on;
+ };
+
+ LDO5 {
+ regulator-name = "ldo5";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3350000>;
+ regulator-boot-on;
+ };
+
+ LDO6 {
+ regulator-name = "ldo6";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3350000>;
+ regulator-boot-on;
+ };
+
+ LDO7 {
+ regulator-name = "ldo7";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3350000>;
+ regulator-boot-on;
+ };
+
+ SW1 {
+ regulator-name = "sw1";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ };
+
+ SW2 {
+ regulator-name = "sw2";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-boot-on;
+ };
+
+ SW3 {
+ regulator-name = "sw3";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-boot-on;
+ };
+
+ SW4 {
+ regulator-name = "sw4";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-boot-on;
+ };
+
+ SW5 {
+ regulator-name = "sw5";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-boot-on;
+ };
+
+ SW6 {
+ regulator-name = "sw6";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ };
+ };
+ };
\ No newline at end of file
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 8df0b0e..c61f72f 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_PV88060
+ tristate "Powerventure Semiconductor PV88060 regulator"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ Say y here to support the voltage regulators and convertors
+ PV88060
+
config REGULATOR_PWM
tristate "PWM voltage regulator"
depends on PWM
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 0f81749..b11c8a4 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-$(CONFIG_REGULATOR_PV88060) += pv88060-regulator.o
obj-$(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/pv88060-regulator.c b/drivers/regulator/pv88060-regulator.c
new file mode 100644
index 0000000..079194d
--- /dev/null
+++ b/drivers/regulator/pv88060-regulator.c
@@ -0,0 +1,517 @@
+/*
+ * pv88060-regulator.c - Regulator device driver for PV88060
+ * 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/pv88060.h>
+#include "pv88060-regulator.h"
+
+/* PV88060 REGULATOR IDs */
+enum {
+ /* BUCKs */
+ PV88060_ID_BUCK1,
+
+ /* LDOs */
+ PV88060_ID_LDO1,
+ PV88060_ID_LDO2,
+ PV88060_ID_LDO3,
+ PV88060_ID_LDO4,
+ PV88060_ID_LDO5,
+ PV88060_ID_LDO6,
+ PV88060_ID_LDO7,
+
+ /* SWTs */
+ PV88060_ID_SW1,
+ PV88060_ID_SW2,
+ PV88060_ID_SW3,
+ PV88060_ID_SW4,
+ PV88060_ID_SW5,
+ PV88060_ID_SW6,
+};
+
+struct pv88060_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 pv88060 {
+ struct device *dev;
+ struct regmap *regmap;
+ struct pv88060_pdata *pdata;
+ struct regulator_dev *rdev[PV88060_MAX_REGULATORS];
+};
+
+static const struct regmap_config pv88060_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+/* Current limits array (in uA) for BUCK1
+ * Entry indexes corresponds to register values.
+ */
+
+static const int pv88060_buck1_limits[] = {
+ 1496000, 2393000, 3291000, 4189000
+};
+
+static unsigned int pv88060_buck_get_mode(struct regulator_dev *rdev)
+{
+ struct pv88060_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 & PV88060_BUCK_MODE_MASK) {
+ case PV88060_BUCK_MODE_SYNC:
+ mode = REGULATOR_MODE_FAST;
+ break;
+ case PV88060_BUCK_MODE_AUTO:
+ mode = REGULATOR_MODE_NORMAL;
+ break;
+ case PV88060_BUCK_MODE_SLEEP:
+ mode = REGULATOR_MODE_STANDBY;
+ break;
+ }
+
+ return mode;
+}
+
+static int pv88060_buck_set_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ struct pv88060_regulator *info = rdev_get_drvdata(rdev);
+ int val = 0;
+
+ switch (mode) {
+ case REGULATOR_MODE_FAST:
+ val = PV88060_BUCK_MODE_SYNC;
+ break;
+ case REGULATOR_MODE_NORMAL:
+ val = PV88060_BUCK_MODE_AUTO;
+ break;
+ case REGULATOR_MODE_STANDBY:
+ val = PV88060_BUCK_MODE_SLEEP;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return regmap_update_bits(rdev->regmap, info->conf,
+ PV88060_BUCK_MODE_MASK, val);
+}
+
+static int pv88060_set_current_limit(struct regulator_dev *rdev, int min,
+ int max)
+{
+ struct pv88060_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 << PV88060_BUCK_ILIM_SHIFT);
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int pv88060_get_current_limit(struct regulator_dev *rdev)
+{
+ struct pv88060_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) >> PV88060_BUCK_ILIM_SHIFT;
+ return info->current_limits[data];
+}
+
+static struct regulator_ops pv88060_buck_ops = {
+ .get_mode = pv88060_buck_get_mode,
+ .set_mode = pv88060_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 = pv88060_set_current_limit,
+ .get_current_limit = pv88060_get_current_limit,
+};
+
+static struct regulator_ops pv88060_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 PV88060_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 = &pv88060_buck_ops,\
+ .desc.min_uV = min, \
+ .desc.uV_step = step, \
+ .desc.n_voltages = ((max) - (min))/(step) + 1, \
+ .desc.enable_reg = PV88060_REG_##regl_name##_CONF0, \
+ .desc.enable_mask = PV88060_BUCK_EN, \
+ .desc.vsel_reg = PV88060_REG_##regl_name##_CONF0, \
+ .desc.vsel_mask = PV88060_VBUCK_MASK, \
+ .current_limits = limits_array, \
+ .n_current_limits = ARRAY_SIZE(limits_array), \
+ .limit_mask = PV88060_BUCK_ILIM_MASK, \
+ .conf = PV88060_REG_##regl_name##_CONF1, \
+}
+
+#define PV88060_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 = &pv88060_ldo_ops,\
+ .desc.min_uV = min, \
+ .desc.uV_step = step, \
+ .desc.n_voltages = (step) ? ((max - min) / step + 1) : 1, \
+ .desc.enable_reg = PV88060_REG_##regl_name##_CONF, \
+ .desc.enable_mask = PV88060_LDO_EN, \
+ .desc.vsel_reg = PV88060_REG_##regl_name##_CONF, \
+ .desc.vsel_mask = PV88060_VLDO_MASK, \
+}
+
+#define PV88060_SW(chip, regl_name, max) \
+{\
+ .desc.id = chip##_ID_##regl_name,\
+ .desc.name = __stringify(chip##_##regl_name),\
+ .desc.type = REGULATOR_VOLTAGE,\
+ .desc.owner = THIS_MODULE,\
+ .desc.ops = &pv88060_ldo_ops,\
+ .desc.min_uV = max, \
+ .desc.uV_step = 0, \
+ .desc.n_voltages = 1, \
+ .desc.enable_reg = PV88060_REG_##regl_name##_CONF, \
+ .desc.enable_mask = PV88060_SW_EN, \
+}
+
+static const struct pv88060_regulator pv88060_regulator_info[] = {
+ PV88060_BUCK(PV88060, BUCK1, 2800000, 12500, 4387500,
+ pv88060_buck1_limits),
+ PV88060_LDO(PV88060, LDO1, 1200000, 50000, 3350000),
+ PV88060_LDO(PV88060, LDO2, 1200000, 50000, 3350000),
+ PV88060_LDO(PV88060, LDO3, 1200000, 50000, 3350000),
+ PV88060_LDO(PV88060, LDO4, 1200000, 50000, 3350000),
+ PV88060_LDO(PV88060, LDO5, 1200000, 50000, 3350000),
+ PV88060_LDO(PV88060, LDO6, 1200000, 50000, 3350000),
+ PV88060_LDO(PV88060, LDO7, 1200000, 50000, 3350000),
+ PV88060_SW(PV88060, SW1, 5000000),
+ PV88060_SW(PV88060, SW2, 5000000),
+ PV88060_SW(PV88060, SW3, 5000000),
+ PV88060_SW(PV88060, SW4, 5000000),
+ PV88060_SW(PV88060, SW5, 5000000),
+ PV88060_SW(PV88060, SW6, 5000000),
+};
+
+#ifdef CONFIG_OF
+static struct of_regulator_match pv88060_matches[] = {
+ [PV88060_ID_BUCK1] = { .name = "BUCK1" },
+ [PV88060_ID_LDO1] = { .name = "LDO1" },
+ [PV88060_ID_LDO2] = { .name = "LDO2" },
+ [PV88060_ID_LDO3] = { .name = "LDO3" },
+ [PV88060_ID_LDO4] = { .name = "LDO4" },
+ [PV88060_ID_LDO5] = { .name = "LDO5" },
+ [PV88060_ID_LDO6] = { .name = "LDO6" },
+ [PV88060_ID_LDO7] = { .name = "LDO7" },
+ [PV88060_ID_SW1] = { .name = "SW1" },
+ [PV88060_ID_SW2] = { .name = "SW2" },
+ [PV88060_ID_SW3] = { .name = "SW3" },
+ [PV88060_ID_SW4] = { .name = "SW4" },
+ [PV88060_ID_SW5] = { .name = "SW5" },
+ [PV88060_ID_SW6] = { .name = "SW6" },
+};
+
+static struct pv88060_pdata *pv88060_parse_regulators_dt(
+ struct device *dev)
+{
+ struct pv88060_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, pv88060_matches,
+ ARRAY_SIZE(pv88060_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(pv88060_matches); i++) {
+ if (!pv88060_matches[i].init_data)
+ continue;
+
+ if (i == 0) {
+ pv88060_matches[i].init_data->constraints
+ .valid_modes_mask
+ |= REGULATOR_MODE_FAST
+ | REGULATOR_MODE_NORMAL
+ | REGULATOR_MODE_STANDBY;
+ pv88060_matches[i].init_data->constraints.valid_ops_mask
+ |= REGULATOR_CHANGE_MODE;
+ }
+
+ pdata->init_data[n] = pv88060_matches[i].init_data;
+ pdata->reg_node[n] = pv88060_matches[i].of_node;
+ n++;
+ }
+
+ return pdata;
+}
+#else
+static struct pv88060_pdata *pv88060_parse_regulators_dt(
+ struct device *dev)
+{
+ return ERR_PTR(-ENODEV);
+}
+#endif
+
+static irqreturn_t pv88060_irq_handler(int irq, void *data)
+{
+ struct pv88060 *chip = data;
+ int i, reg_val, err, ret = IRQ_NONE;
+
+ err = regmap_read(chip->regmap, PV88060_REG_EVENT_A, &reg_val);
+ if (err < 0)
+ goto error_i2c;
+
+ if (reg_val & PV88060_E_VDD_FLT) {
+ for (i = 0; i < PV88060_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, PV88060_REG_EVENT_A,
+ PV88060_E_VDD_FLT, PV88060_E_VDD_FLT);
+ if (err < 0)
+ goto error_i2c;
+
+ ret = IRQ_HANDLED;
+ }
+
+ if (reg_val & PV88060_E_OVER_TEMP) {
+ for (i = 0; i < PV88060_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, PV88060_REG_EVENT_A,
+ PV88060_E_OVER_TEMP, PV88060_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 pv88060_regulator_init(struct pv88060 *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 *)&pv88060_regulator_info[i];
+ config.regmap = chip->regmap;
+ config.of_node = chip->pdata->reg_node[i];
+ chip->rdev[i] = regulator_register(
+ &pv88060_regulator_info[i].desc, &config);
+ if (IS_ERR(chip->rdev[i])) {
+ dev_err(chip->dev,
+ "Failed to register PV88060 regulator\n");
+ return PTR_ERR(chip->rdev[i]);
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * I2C driver interface functions
+ */
+static int pv88060_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct pv88060 *chip;
+ int error, ret;
+
+ chip = devm_kzalloc(&i2c->dev, sizeof(struct pv88060), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->dev = &i2c->dev;
+ chip->regmap = devm_regmap_init_i2c(i2c, &pv88060_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 = pv88060_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, PV88060_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, PV88060_REG_MASK_B, 0xFF);
+ if (ret < 0) {
+ dev_err(chip->dev,
+ "Failed to mask B reg: %d\n", ret);
+ return ret;
+ }
+ regmap_write(chip->regmap, PV88060_REG_MASK_C, 0xFF);
+ if (ret < 0) {
+ dev_err(chip->dev,
+ "Failed to mask C reg: %d\n", ret);
+ return ret;
+ }
+
+ ret = request_threaded_irq(i2c->irq, NULL,
+ pv88060_irq_handler,
+ IRQF_TRIGGER_LOW|IRQF_ONESHOT,
+ "pv88060", chip);
+ if (ret != 0) {
+ dev_err(chip->dev, "Failed to request IRQ: %d\n",
+ i2c->irq);
+ return ret;
+ }
+
+ ret = regmap_update_bits(chip->regmap, PV88060_REG_MASK_A,
+ PV88060_M_VDD_FLT | PV88060_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 = pv88060_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 pv88060_i2c_id[] = {
+ {"pv88060", 0},
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, pv88060_i2c_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id pv88060_dt_ids[] = {
+ { .compatible = "pvs,pv88060", .data = &pv88060_i2c_id[0] },
+ {},
+};
+MODULE_DEVICE_TABLE(of, pv88060_dt_ids);
+#endif
+
+static struct i2c_driver pv88060_regulator_driver = {
+ .driver = {
+ .name = "pv88060",
+ .of_match_table = of_match_ptr(pv88060_dt_ids),
+ },
+ .probe = pv88060_i2c_probe,
+ .id_table = pv88060_i2c_id,
+};
+
+module_i2c_driver(pv88060_regulator_driver);
+
+MODULE_AUTHOR("James Ban <James.Ban.opensource@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("Regulator device driver for Powerventure PV88060");
+MODULE_LICENSE("GPL");
diff --git a/drivers/regulator/pv88060-regulator.h b/drivers/regulator/pv88060-regulator.h
new file mode 100644
index 0000000..2f756e8
--- /dev/null
+++ b/drivers/regulator/pv88060-regulator.h
@@ -0,0 +1,69 @@
+/*
+ * pv88060-regulator.h - Regulator definitions for PV88060
+ * 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 __PV88060_REGISTERS_H__
+#define __PV88060_REGISTERS_H__
+
+/* System Control and Event Registers */
+#define PV88060_REG_EVENT_A 0x04
+#define PV88060_REG_MASK_A 0x08
+#define PV88060_REG_MASK_B 0x09
+#define PV88060_REG_MASK_C 0x0A
+
+/* Regulator Registers */
+#define PV88060_REG_BUCK1_CONF0 0x1B
+#define PV88060_REG_BUCK1_CONF1 0x1C
+#define PV88060_REG_LDO1_CONF 0x1D
+#define PV88060_REG_LDO2_CONF 0x1E
+#define PV88060_REG_LDO3_CONF 0x1F
+#define PV88060_REG_LDO4_CONF 0x20
+#define PV88060_REG_LDO5_CONF 0x21
+#define PV88060_REG_LDO6_CONF 0x22
+#define PV88060_REG_LDO7_CONF 0x23
+
+#define PV88060_REG_SW1_CONF 0x3B
+#define PV88060_REG_SW2_CONF 0x3C
+#define PV88060_REG_SW3_CONF 0x3D
+#define PV88060_REG_SW4_CONF 0x3E
+#define PV88060_REG_SW5_CONF 0x3F
+#define PV88060_REG_SW6_CONF 0x40
+
+/* PV88060_REG_EVENT_A (addr=0x04) */
+#define PV88060_E_VDD_FLT 0x01
+#define PV88060_E_OVER_TEMP 0x02
+
+/* PV88060_REG_MASK_A (addr=0x08) */
+#define PV88060_M_VDD_FLT 0x01
+#define PV88060_M_OVER_TEMP 0x02
+
+/* PV88060_REG_BUCK1_CONF0 (addr=0x1B) */
+#define PV88060_BUCK_EN 0x80
+#define PV88060_VBUCK_MASK 0x7F
+/* PV88060_REG_LDO1/2/3/4/5/6/7_CONT */
+#define PV88060_LDO_EN 0x40
+#define PV88060_VLDO_MASK 0x3F
+/* PV88060_REG_SW1/2/3/4/5_CONF */
+#define PV88060_SW_EN 0x80
+
+/* PV88060_REG_BUCK1_CONF1 (addr=0x1C) */
+#define PV88060_BUCK_ILIM_SHIFT 2
+#define PV88060_BUCK_ILIM_MASK 0x0C
+#define PV88060_BUCK_MODE_SHIFT 0
+#define PV88060_BUCK_MODE_MASK 0x03
+#define PV88060_BUCK_MODE_SLEEP 0x00
+#define PV88060_BUCK_MODE_SYNC 0x02
+#define PV88060_BUCK_MODE_AUTO 0x01
+
+#endif /* __PV88060_REGISTERS_H__ */
diff --git a/include/linux/regulator/pv88060.h b/include/linux/regulator/pv88060.h
new file mode 100644
index 0000000..4a289a8
--- /dev/null
+++ b/include/linux/regulator/pv88060.h
@@ -0,0 +1,28 @@
+/*
+ * pv88060.h - Regulator device driver for PV88060
+ * 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_PV88060_H
+#define __LINUX_REGULATOR_PV88060_H
+
+#include <linux/regulator/machine.h>
+
+#define PV88060_MAX_REGULATORS 14
+
+struct pv88060_pdata {
+ int num_regulator;
+ struct device_node *reg_node[PV88060_MAX_REGULATORS];
+ struct regulator_init_data *init_data[PV88060_MAX_REGULATORS];
+};
+#endif
--
end-of-patch for PATCH V1

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