Merge remote-tracking branches 'regulator/topic/da9211', 'regulator/topic/getreg', 'regulator/topic/gpio' and 'regulator/topic/lp872x' into regulator-next

Documentation/power/regulator/consumer.txt

@@ -180,3 +180,38 @@ int regulator_unregister_notifier(struct regulator *regulator,
 
 Regulators use the kernel notifier framework to send event to their interested
 consumers.
+
+7. Regulator Direct Register Access
+===================================
+Some kinds of power management hardware or firmware are designed such that
+they need to do low-level hardware access to regulators, with no involvement
+from the kernel. Examples of such devices are:
+
+- clocksource with a voltage-controlled oscillator and control logic to change
+  the supply voltage over I2C to achieve a desired output clock rate
+- thermal management firmware that can issue an arbitrary I2C transaction to
+  perform system poweroff during overtemperature conditions
+
+To set up such a device/firmware, various parameters like I2C address of the
+regulator, addresses of various regulator registers etc. need to be configured
+to it. The regulator framework provides the following helpers for querying
+these details.
+
+Bus-specific details, like I2C addresses or transfer rates are handled by the
+regmap framework. To get the regulator's regmap (if supported), use :-
+
+struct regmap *regulator_get_regmap(struct regulator *regulator);
+
+To obtain the hardware register offset and bitmask for the regulator's voltage
+selector register, use :-
+
+int regulator_get_hardware_vsel_register(struct regulator *regulator,
+					 unsigned *vsel_reg,
+					 unsigned *vsel_mask);
+
+To convert a regulator framework voltage selector code (used by
+regulator_list_voltage) to a hardware-specific voltage selector that can be
+directly written to the voltage selector register, use :-
+
+int regulator_list_hardware_vsel(struct regulator *regulator,
+				 unsigned selector);

drivers/regulator/Kconfig

@@ -198,6 +198,16 @@ config REGULATOR_DA9210
 	  converter 12A DC-DC Buck controlled through an I2C
 	  interface.
 
+config REGULATOR_DA9211
+	tristate "Dialog Semiconductor DA9211/DA9212 regulator"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say y here to support for the Dialog Semiconductor DA9211/DA9212.
+	  The DA9211/DA9212 is a multi-phase synchronous step down
+	  converter 12A DC-DC Buck controlled through an I2C
+	  interface.
+
 config REGULATOR_DBX500_PRCMU
 	bool
 

drivers/regulator/Makefile

@@ -27,6 +27,7 @@ obj-$(CONFIG_REGULATOR_DA9052)	+= da9052-regulator.o
 obj-$(CONFIG_REGULATOR_DA9055)	+= da9055-regulator.o
 obj-$(CONFIG_REGULATOR_DA9063)	+= da9063-regulator.o
 obj-$(CONFIG_REGULATOR_DA9210) += da9210-regulator.o
+obj-$(CONFIG_REGULATOR_DA9211) += da9211-regulator.o
 obj-$(CONFIG_REGULATOR_DBX500_PRCMU) += dbx500-prcmu.o
 obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o
 obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o

drivers/regulator/core.c

@@ -24,6 +24,7 @@
 #include <linux/suspend.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/of.h>
 #include <linux/regmap.h>
 #include <linux/regulator/of_regulator.h>
@@ -77,7 +78,7 @@ struct regulator_map {
  */
 struct regulator_enable_gpio {
 	struct list_head list;
-	int gpio;
+	struct gpio_desc *gpiod;
 	u32 enable_count;	/* a number of enabled shared GPIO */
 	u32 request_count;	/* a number of requested shared GPIO */
 	unsigned int ena_gpio_invert:1;
@@ -1662,10 +1663,13 @@ static int regulator_ena_gpio_request(struct regulator_dev *rdev,
 				const struct regulator_config *config)
 {
 	struct regulator_enable_gpio *pin;
+	struct gpio_desc *gpiod;
 	int ret;
 
+	gpiod = gpio_to_desc(config->ena_gpio);
+
 	list_for_each_entry(pin, &regulator_ena_gpio_list, list) {
-		if (pin->gpio == config->ena_gpio) {
+		if (pin->gpiod == gpiod) {
 			rdev_dbg(rdev, "GPIO %d is already used\n",
 				config->ena_gpio);
 			goto update_ena_gpio_to_rdev;
@@ -1684,7 +1688,7 @@ static int regulator_ena_gpio_request(struct regulator_dev *rdev,
 		return -ENOMEM;
 	}
 
-	pin->gpio = config->ena_gpio;
+	pin->gpiod = gpiod;
 	pin->ena_gpio_invert = config->ena_gpio_invert;
 	list_add(&pin->list, &regulator_ena_gpio_list);
 
@@ -1703,10 +1707,10 @@ static void regulator_ena_gpio_free(struct regulator_dev *rdev)
 
 	/* Free the GPIO only in case of no use */
 	list_for_each_entry_safe(pin, n, &regulator_ena_gpio_list, list) {
-		if (pin->gpio == rdev->ena_pin->gpio) {
+		if (pin->gpiod == rdev->ena_pin->gpiod) {
 			if (pin->request_count <= 1) {
 				pin->request_count = 0;
-				gpio_free(pin->gpio);
+				gpiod_put(pin->gpiod);
 				list_del(&pin->list);
 				kfree(pin);
 			} else {
@@ -1734,8 +1738,8 @@ static int regulator_ena_gpio_ctrl(struct regulator_dev *rdev, bool enable)
 	if (enable) {
 		/* Enable GPIO at initial use */
 		if (pin->enable_count == 0)
-			gpio_set_value_cansleep(pin->gpio,
-						!pin->ena_gpio_invert);
+			gpiod_set_value_cansleep(pin->gpiod,
+						 !pin->ena_gpio_invert);
 
 		pin->enable_count++;
 	} else {
@@ -1746,8 +1750,8 @@ static int regulator_ena_gpio_ctrl(struct regulator_dev *rdev, bool enable)
 
 		/* Disable GPIO if not used */
 		if (pin->enable_count <= 1) {
-			gpio_set_value_cansleep(pin->gpio,
-						pin->ena_gpio_invert);
+			gpiod_set_value_cansleep(pin->gpiod,
+						 pin->ena_gpio_invert);
 			pin->enable_count = 0;
 		}
 	}
@@ -2234,6 +2238,77 @@ int regulator_list_voltage(struct regulator *regulator, unsigned selector)
 }
 EXPORT_SYMBOL_GPL(regulator_list_voltage);
 
+/**
+ * regulator_get_regmap - get the regulator's register map
+ * @regulator: regulator source
+ *
+ * Returns the register map for the given regulator, or an ERR_PTR value
+ * if the regulator doesn't use regmap.
+ */
+struct regmap *regulator_get_regmap(struct regulator *regulator)
+{
+	struct regmap *map = regulator->rdev->regmap;
+
+	return map ? map : ERR_PTR(-EOPNOTSUPP);
+}
+
+/**
+ * regulator_get_hardware_vsel_register - get the HW voltage selector register
+ * @regulator: regulator source
+ * @vsel_reg: voltage selector register, output parameter
+ * @vsel_mask: mask for voltage selector bitfield, output parameter
+ *
+ * Returns the hardware register offset and bitmask used for setting the
+ * regulator voltage. This might be useful when configuring voltage-scaling
+ * hardware or firmware that can make I2C requests behind the kernel's back,
+ * for example.
+ *
+ * On success, the output parameters @vsel_reg and @vsel_mask are filled in
+ * and 0 is returned, otherwise a negative errno is returned.
+ */
+int regulator_get_hardware_vsel_register(struct regulator *regulator,
+					 unsigned *vsel_reg,
+					 unsigned *vsel_mask)
+{
+	struct regulator_dev	*rdev = regulator->rdev;
+	struct regulator_ops	*ops = rdev->desc->ops;
+
+	if (ops->set_voltage_sel != regulator_set_voltage_sel_regmap)
+		return -EOPNOTSUPP;
+
+	 *vsel_reg = rdev->desc->vsel_reg;
+	 *vsel_mask = rdev->desc->vsel_mask;
+
+	 return 0;
+}
+EXPORT_SYMBOL_GPL(regulator_get_hardware_vsel_register);
+
+/**
+ * regulator_list_hardware_vsel - get the HW-specific register value for a selector
+ * @regulator: regulator source
+ * @selector: identify voltage to list
+ *
+ * Converts the selector to a hardware-specific voltage selector that can be
+ * directly written to the regulator registers. The address of the voltage
+ * register can be determined by calling @regulator_get_hardware_vsel_register.
+ *
+ * On error a negative errno is returned.
+ */
+int regulator_list_hardware_vsel(struct regulator *regulator,
+				 unsigned selector)
+{
+	struct regulator_dev	*rdev = regulator->rdev;
+	struct regulator_ops	*ops = rdev->desc->ops;
+
+	if (selector >= rdev->desc->n_voltages)
+		return -EINVAL;
+	if (ops->set_voltage_sel != regulator_set_voltage_sel_regmap)
+		return -EOPNOTSUPP;
+
+	return selector;
+}
+EXPORT_SYMBOL_GPL(regulator_list_hardware_vsel);
+
 /**
  * regulator_get_linear_step - return the voltage step size between VSEL values
  * @regulator: regulator source

drivers/regulator/da9211-regulator.c

@@ -0,0 +1,368 @@
+/*
+ * da9211-regulator.c - Regulator device driver for DA9211
+ * Copyright (C) 2014  Dialog Semiconductor Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library 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/da9211.h>
+#include "da9211-regulator.h"
+
+#define DA9211_BUCK_MODE_SLEEP	1
+#define DA9211_BUCK_MODE_SYNC	2
+#define DA9211_BUCK_MODE_AUTO	3
+
+/* DA9211 REGULATOR IDs */
+#define DA9211_ID_BUCKA	0
+#define DA9211_ID_BUCKB	1
+
+struct da9211 {
+	struct device *dev;
+	struct regmap *regmap;
+	struct da9211_pdata *pdata;
+	struct regulator_dev *rdev[DA9211_MAX_REGULATORS];
+	int num_regulator;
+	int chip_irq;
+};
+
+static const struct regmap_range_cfg da9211_regmap_range[] = {
+	{
+		.selector_reg = DA9211_REG_PAGE_CON,
+		.selector_mask  = DA9211_REG_PAGE_MASK,
+		.selector_shift = DA9211_REG_PAGE_SHIFT,
+		.window_start = 0,
+		.window_len = 256,
+		.range_min = 0,
+		.range_max = 2*256,
+	},
+};
+
+static const struct regmap_config da9211_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = 2 * 256,
+	.ranges = da9211_regmap_range,
+	.num_ranges = ARRAY_SIZE(da9211_regmap_range),
+};
+
+/* Default limits measured in millivolts and milliamps */
+#define DA9211_MIN_MV		300
+#define DA9211_MAX_MV		1570
+#define DA9211_STEP_MV		10
+
+/* Current limits for buck (uA) indices corresponds with register values */
+static const int da9211_current_limits[] = {
+	2000000, 2200000, 2400000, 2600000, 2800000, 3000000, 3200000, 3400000,
+	3600000, 3800000, 4000000, 4200000, 4400000, 4600000, 4800000, 5000000
+};
+
+static unsigned int da9211_buck_get_mode(struct regulator_dev *rdev)
+{
+	int id = rdev_get_id(rdev);
+	struct da9211 *chip = rdev_get_drvdata(rdev);
+	unsigned int data;
+	int ret, mode = 0;
+
+	ret = regmap_read(chip->regmap, DA9211_REG_BUCKA_CONF+id, &data);
+	if (ret < 0)
+		return ret;
+
+	switch (data & 0x03) {
+	case DA9211_BUCK_MODE_SYNC:
+		mode = REGULATOR_MODE_FAST;
+		break;
+	case DA9211_BUCK_MODE_AUTO:
+		mode = REGULATOR_MODE_NORMAL;
+		break;
+	case DA9211_BUCK_MODE_SLEEP:
+		mode = REGULATOR_MODE_STANDBY;
+		break;
+	}
+
+	return mode;
+}
+
+static int da9211_buck_set_mode(struct regulator_dev *rdev,
+					unsigned int mode)
+{
+	int id = rdev_get_id(rdev);
+	struct da9211 *chip = rdev_get_drvdata(rdev);
+	int val = 0;
+
+	switch (mode) {
+	case REGULATOR_MODE_FAST:
+		val = DA9211_BUCK_MODE_SYNC;
+		break;
+	case REGULATOR_MODE_NORMAL:
+		val = DA9211_BUCK_MODE_AUTO;
+		break;
+	case REGULATOR_MODE_STANDBY:
+		val = DA9211_BUCK_MODE_SLEEP;
+		break;
+	}
+
+	return regmap_update_bits(chip->regmap, DA9211_REG_BUCKA_CONF+id,
+					0x03, val);
+}
+
+static int da9211_set_current_limit(struct regulator_dev *rdev, int min,
+				    int max)
+{
+	int id = rdev_get_id(rdev);
+	struct da9211 *chip = rdev_get_drvdata(rdev);
+	int i;
+
+	/* search for closest to maximum */
+	for (i = ARRAY_SIZE(da9211_current_limits)-1; i >= 0; i--) {
+		if (min <= da9211_current_limits[i] &&
+		    max >= da9211_current_limits[i]) {
+				return regmap_update_bits(chip->regmap,
+					DA9211_REG_BUCK_ILIM,
+					(0x0F << id*4), (i << id*4));
+		}
+	}
+
+	return -EINVAL;
+}
+
+static int da9211_get_current_limit(struct regulator_dev *rdev)
+{
+	int id = rdev_get_id(rdev);
+	struct da9211 *chip = rdev_get_drvdata(rdev);
+	unsigned int data;
+	int ret;
+
+	ret = regmap_read(chip->regmap, DA9211_REG_BUCK_ILIM, &data);
+	if (ret < 0)
+		return ret;
+
+	/* select one of 16 values: 0000 (2000mA) to 1111 (5000mA) */
+	data = (data >> id*4) & 0x0F;
+	return da9211_current_limits[data];
+}
+
+static struct regulator_ops da9211_buck_ops = {
+	.get_mode = da9211_buck_get_mode,
+	.set_mode = da9211_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 = da9211_set_current_limit,
+	.get_current_limit = da9211_get_current_limit,
+};
+
+#define DA9211_BUCK(_id) \
+{\
+	.name = #_id,\
+	.ops = &da9211_buck_ops,\
+	.type = REGULATOR_VOLTAGE,\
+	.id = DA9211_ID_##_id,\
+	.n_voltages = (DA9211_MAX_MV - DA9211_MIN_MV) / DA9211_STEP_MV + 1,\
+	.min_uV = (DA9211_MIN_MV * 1000),\
+	.uV_step = (DA9211_STEP_MV * 1000),\
+	.enable_reg = DA9211_REG_BUCKA_CONT + DA9211_ID_##_id,\
+	.enable_mask = DA9211_BUCKA_EN,\
+	.vsel_reg = DA9211_REG_VBUCKA_A + DA9211_ID_##_id * 2,\
+	.vsel_mask = DA9211_VBUCK_MASK,\
+	.owner = THIS_MODULE,\
+}
+
+static struct regulator_desc da9211_regulators[] = {
+	DA9211_BUCK(BUCKA),
+	DA9211_BUCK(BUCKB),
+};
+
+static irqreturn_t da9211_irq_handler(int irq, void *data)
+{
+	struct da9211 *chip = data;
+	int reg_val, err, ret = IRQ_NONE;
+
+	err = regmap_read(chip->regmap, DA9211_REG_EVENT_B, &reg_val);
+	if (err < 0)
+		goto error_i2c;
+
+	if (reg_val & DA9211_E_OV_CURR_A) {
+		regulator_notifier_call_chain(chip->rdev[0],
+			REGULATOR_EVENT_OVER_CURRENT,
+			rdev_get_drvdata(chip->rdev[0]));
+
+		err = regmap_write(chip->regmap, DA9211_REG_EVENT_B,
+			DA9211_E_OV_CURR_A);
+		if (err < 0)
+			goto error_i2c;
+
+		ret = IRQ_HANDLED;
+	}
+
+	if (reg_val & DA9211_E_OV_CURR_B) {
+		regulator_notifier_call_chain(chip->rdev[1],
+			REGULATOR_EVENT_OVER_CURRENT,
+			rdev_get_drvdata(chip->rdev[1]));
+
+		err = regmap_write(chip->regmap, DA9211_REG_EVENT_B,
+			DA9211_E_OV_CURR_B);
+		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 da9211_regulator_init(struct da9211 *chip)
+{
+	struct regulator_config config = { };
+	int i, ret;
+	unsigned int data;
+
+	ret = regmap_read(chip->regmap, DA9211_REG_CONFIG_E, &data);
+	if (ret < 0) {
+		dev_err(chip->dev, "Failed to read CONTROL_E reg: %d\n", ret);
+		return ret;
+	}
+
+	data &= DA9211_SLAVE_SEL;
+	/* If configuration for 1/2 bucks is different between platform data
+	 * and the register, driver should exit.
+	 */
+	if ((chip->pdata->num_buck == 2 && data == 0x40)
+		|| (chip->pdata->num_buck == 1 && data == 0x00)) {
+		if (data == 0)
+			chip->num_regulator = 1;
+		else
+			chip->num_regulator = 2;
+	} else {
+		dev_err(chip->dev, "Configuration is mismatched\n");
+		return -EINVAL;
+	}
+
+	for (i = 0; i < chip->num_regulator; i++) {
+		if (chip->pdata)
+			config.init_data =
+				&(chip->pdata->init_data[i]);
+
+		config.dev = chip->dev;
+		config.driver_data = chip;
+		config.regmap = chip->regmap;
+
+		chip->rdev[i] = devm_regulator_register(chip->dev,
+			&da9211_regulators[i], &config);
+		if (IS_ERR(chip->rdev[i])) {
+			dev_err(chip->dev,
+				"Failed to register DA9211 regulator\n");
+			return PTR_ERR(chip->rdev[i]);
+		}
+
+		if (chip->chip_irq != 0) {
+			ret = regmap_update_bits(chip->regmap,
+				DA9211_REG_MASK_B, DA9211_M_OV_CURR_A << i, 1);
+			if (ret < 0) {
+				dev_err(chip->dev,
+					"Failed to update mask reg: %d\n", ret);
+				return ret;
+			}
+		}
+	}
+
+	return 0;
+}
+/*
+ * I2C driver interface functions
+ */
+static int da9211_i2c_probe(struct i2c_client *i2c,
+		const struct i2c_device_id *id)
+{
+	struct da9211 *chip;
+	int error, ret;
+
+	chip = devm_kzalloc(&i2c->dev, sizeof(struct da9211), GFP_KERNEL);
+
+	chip->dev = &i2c->dev;
+	chip->regmap = devm_regmap_init_i2c(i2c, &da9211_regmap_config);
+	if (IS_ERR(chip->regmap)) {
+		error = PTR_ERR(chip->regmap);
+		dev_err(&i2c->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) {
+		dev_err(&i2c->dev, "No platform init data supplied\n");
+		return -ENODEV;
+	}
+
+	chip->chip_irq = i2c->irq;
+
+	if (chip->chip_irq != 0) {
+		ret = devm_request_threaded_irq(chip->dev, chip->chip_irq, NULL,
+					da9211_irq_handler,
+					IRQF_TRIGGER_LOW|IRQF_ONESHOT,
+					"da9211", chip);
+		if (ret != 0) {
+			dev_err(chip->dev, "Failed to request IRQ: %d\n",
+				chip->chip_irq);
+			return ret;
+		}
+	} else {
+		dev_warn(chip->dev, "No IRQ configured\n");
+	}
+
+	ret = da9211_regulator_init(chip);
+
+	if (ret < 0)
+		dev_err(&i2c->dev, "Failed to initialize regulator: %d\n", ret);
+
+	return ret;
+}
+
+static const struct i2c_device_id da9211_i2c_id[] = {
+	{"da9211", 0},
+	{},
+};
+
+MODULE_DEVICE_TABLE(i2c, da9211_i2c_id);
+
+static struct i2c_driver da9211_regulator_driver = {
+	.driver = {
+		.name = "da9211",
+		.owner = THIS_MODULE,
+	},
+	.probe = da9211_i2c_probe,
+	.id_table = da9211_i2c_id,
+};
+
+module_i2c_driver(da9211_regulator_driver);
+
+MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>");
+MODULE_DESCRIPTION("Regulator device driver for Dialog DA9211");
+MODULE_LICENSE("GPL v2");

drivers/regulator/da9211-regulator.h

@@ -0,0 +1,271 @@
+/*
+ * da9211-regulator.h - Regulator definitions for DA9211
+ * Copyright (C) 2014  Dialog Semiconductor Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ */
+
+#ifndef __DA9211_REGISTERS_H__
+#define __DA9211_REGISTERS_H__
+
+/* Page selection */
+#define	DA9211_REG_PAGE_CON			0x00
+
+/* System Control and Event Registers */
+#define	DA9211_REG_STATUS_A			0x50
+#define	DA9211_REG_STATUS_B			0x51
+#define	DA9211_REG_EVENT_A			0x52
+#define	DA9211_REG_EVENT_B			0x53
+#define	DA9211_REG_MASK_A			0x54
+#define	DA9211_REG_MASK_B			0x55
+#define	DA9211_REG_CONTROL_A		0x56
+
+/* GPIO Control Registers */
+#define	DA9211_REG_GPIO_0_1			0x58
+#define	DA9211_REG_GPIO_2_3			0x59
+#define	DA9211_REG_GPIO_4			0x5A
+
+/* Regulator Registers */
+#define	DA9211_REG_BUCKA_CONT			0x5D
+#define	DA9211_REG_BUCKB_CONT			0x5E
+#define	DA9211_REG_BUCK_ILIM			0xD0
+#define	DA9211_REG_BUCKA_CONF			0xD1
+#define	DA9211_REG_BUCKB_CONF			0xD2
+#define	DA9211_REG_BUCK_CONF			0xD3
+#define	DA9211_REG_VBACKA_MAX			0xD5
+#define	DA9211_REG_VBACKB_MAX			0xD6
+#define	DA9211_REG_VBUCKA_A				0xD7
+#define	DA9211_REG_VBUCKA_B				0xD8
+#define	DA9211_REG_VBUCKB_A				0xD9
+#define	DA9211_REG_VBUCKB_B				0xDA
+
+/* I2C Interface Settings */
+#define DA9211_REG_INTERFACE			0x105
+
+/* BUCK Phase Selection*/
+#define DA9211_REG_CONFIG_E			0x147
+
+/*
+ * Registers bits
+ */
+/* DA9211_REG_PAGE_CON (addr=0x00) */
+#define	DA9211_REG_PAGE_SHIFT			1
+#define	DA9211_REG_PAGE_MASK			0x02
+/* On I2C registers 0x00 - 0xFF */
+#define	DA9211_REG_PAGE0			0
+/* On I2C registers 0x100 - 0x1FF */
+#define	DA9211_REG_PAGE2			2
+#define	DA9211_PAGE_WRITE_MODE			0x00
+#define	DA9211_REPEAT_WRITE_MODE		0x40
+#define	DA9211_PAGE_REVERT			0x80
+
+/* DA9211_REG_STATUS_A (addr=0x50) */
+#define	DA9211_GPI0				0x01
+#define	DA9211_GPI1				0x02
+#define	DA9211_GPI2				0x04
+#define	DA9211_GPI3				0x08
+#define	DA9211_GPI4				0x10
+
+/* DA9211_REG_EVENT_A (addr=0x52) */
+#define	DA9211_E_GPI0				0x01
+#define	DA9211_E_GPI1				0x02
+#define	DA9211_E_GPI2				0x04
+#define	DA9211_E_GPI3				0x08
+#define	DA9211_E_GPI4				0x10
+#define	DA9211_E_UVLO_IO			0x40
+
+/* DA9211_REG_EVENT_B (addr=0x53) */
+#define	DA9211_E_PWRGOOD_A			0x01
+#define	DA9211_E_PWRGOOD_B			0x02
+#define	DA9211_E_TEMP_WARN			0x04
+#define	DA9211_E_TEMP_CRIT			0x08
+#define	DA9211_E_OV_CURR_A			0x10
+#define	DA9211_E_OV_CURR_B			0x20
+
+/* DA9211_REG_MASK_A (addr=0x54) */
+#define	DA9211_M_GPI0				0x01
+#define	DA9211_M_GPI1				0x02
+#define	DA9211_M_GPI2				0x04
+#define	DA9211_M_GPI3				0x08
+#define	DA9211_M_GPI4				0x10
+#define	DA9211_M_UVLO_IO			0x40
+
+/* DA9211_REG_MASK_B (addr=0x55) */
+#define	DA9211_M_PWRGOOD_A			0x01
+#define	DA9211_M_PWRGOOD_B			0x02
+#define	DA9211_M_TEMP_WARN			0x04
+#define	DA9211_M_TEMP_CRIT			0x08
+#define	DA9211_M_OV_CURR_A			0x10
+#define	DA9211_M_OV_CURR_B			0x20
+
+/* DA9211_REG_CONTROL_A (addr=0x56) */
+#define	DA9211_DEBOUNCING_SHIFT		0
+#define	DA9211_DEBOUNCING_MASK		0x07
+#define	DA9211_SLEW_RATE_SHIFT		3
+#define	DA9211_SLEW_RATE_A_MASK		0x18
+#define	DA9211_SLEW_RATE_B_SHIFT	5
+#define	DA9211_SLEW_RATE_B_MASK		0x60
+#define	DA9211_V_LOCK				0x80
+
+/* DA9211_REG_GPIO_0_1 (addr=0x58) */
+#define	DA9211_GPIO0_PIN_SHIFT		0
+#define	DA9211_GPIO0_PIN_MASK		0x03
+#define	DA9211_GPIO0_PIN_GPI		0x00
+#define	DA9211_GPIO0_PIN_GPO_OD		0x02
+#define	DA9211_GPIO0_PIN_GPO		0x03
+#define	DA9211_GPIO0_TYPE			0x04
+#define	DA9211_GPIO0_TYPE_GPI		0x00
+#define	DA9211_GPIO0_TYPE_GPO		0x04
+#define	DA9211_GPIO0_MODE			0x08
+#define	DA9211_GPIO1_PIN_SHIFT		4
+#define	DA9211_GPIO1_PIN_MASK		0x30
+#define	DA9211_GPIO1_PIN_GPI		0x00
+#define	DA9211_GPIO1_PIN_VERROR		0x10
+#define	DA9211_GPIO1_PIN_GPO_OD		0x20
+#define	DA9211_GPIO1_PIN_GPO		0x30
+#define	DA9211_GPIO1_TYPE_SHIFT		0x40
+#define	DA9211_GPIO1_TYPE_GPI		0x00
+#define	DA9211_GPIO1_TYPE_GPO		0x40
+#define	DA9211_GPIO1_MODE			0x80
+
+/* DA9211_REG_GPIO_2_3 (addr=0x59) */
+#define	DA9211_GPIO2_PIN_SHIFT		0
+#define	DA9211_GPIO2_PIN_MASK		0x03
+#define	DA9211_GPIO2_PIN_GPI		0x00
+#define	DA9211_GPIO5_PIN_BUCK_CLK	0x10
+#define	DA9211_GPIO2_PIN_GPO_OD		0x02
+#define	DA9211_GPIO2_PIN_GPO		0x03
+#define	DA9211_GPIO2_TYPE			0x04
+#define	DA9211_GPIO2_TYPE_GPI		0x00
+#define	DA9211_GPIO2_TYPE_GPO		0x04
+#define	DA9211_GPIO2_MODE			0x08
+#define	DA9211_GPIO3_PIN_SHIFT		4
+#define	DA9211_GPIO3_PIN_MASK		0x30
+#define	DA9211_GPIO3_PIN_GPI		0x00
+#define	DA9211_GPIO3_PIN_IERROR		0x10
+#define	DA9211_GPIO3_PIN_GPO_OD		0x20
+#define	DA9211_GPIO3_PIN_GPO		0x30
+#define	DA9211_GPIO3_TYPE_SHIFT		0x40
+#define	DA9211_GPIO3_TYPE_GPI		0x00
+#define	DA9211_GPIO3_TYPE_GPO		0x40
+#define	DA9211_GPIO3_MODE			0x80
+
+/* DA9211_REG_GPIO_4 (addr=0x5A) */
+#define	DA9211_GPIO4_PIN_SHIFT		0
+#define	DA9211_GPIO4_PIN_MASK		0x03
+#define	DA9211_GPIO4_PIN_GPI		0x00
+#define	DA9211_GPIO4_PIN_GPO_OD		0x02
+#define	DA9211_GPIO4_PIN_GPO		0x03
+#define	DA9211_GPIO4_TYPE			0x04
+#define	DA9211_GPIO4_TYPE_GPI		0x00
+#define	DA9211_GPIO4_TYPE_GPO		0x04
+#define	DA9211_GPIO4_MODE			0x08
+
+/* DA9211_REG_BUCKA_CONT (addr=0x5D) */
+#define	DA9211_BUCKA_EN				0x01
+#define	DA9211_BUCKA_GPI_SHIFT		1
+#define DA9211_BUCKA_GPI_MASK		0x06
+#define	DA9211_BUCKA_GPI_OFF		0x00
+#define	DA9211_BUCKA_GPI_GPIO0		0x02
+#define	DA9211_BUCKA_GPI_GPIO1		0x04
+#define	DA9211_BUCKA_GPI_GPIO3		0x06
+#define	DA9211_BUCKA_PD_DIS			0x08
+#define	DA9211_VBUCKA_SEL			0x10
+#define	DA9211_VBUCKA_SEL_A			0x00
+#define	DA9211_VBUCKA_SEL_B			0x10
+#define	DA9211_VBUCKA_GPI_SHIFT		5
+#define	DA9211_VBUCKA_GPI_MASK		0x60
+#define	DA9211_VBUCKA_GPI_OFF		0x00
+#define	DA9211_VBUCKA_GPI_GPIO1		0x20
+#define	DA9211_VBUCKA_GPI_GPIO2		0x40
+#define	DA9211_VBUCKA_GPI_GPIO4		0x60
+
+/* DA9211_REG_BUCKB_CONT (addr=0x5E) */
+#define	DA9211_BUCKB_EN				0x01
+#define	DA9211_BUCKB_GPI_SHIFT		1
+#define DA9211_BUCKB_GPI_MASK		0x06
+#define	DA9211_BUCKB_GPI_OFF		0x00
+#define	DA9211_BUCKB_GPI_GPIO0		0x02
+#define	DA9211_BUCKB_GPI_GPIO1		0x04
+#define	DA9211_BUCKB_GPI_GPIO3		0x06
+#define	DA9211_BUCKB_PD_DIS			0x08
+#define	DA9211_VBUCKB_SEL			0x10
+#define	DA9211_VBUCKB_SEL_A			0x00
+#define	DA9211_VBUCKB_SEL_B			0x10
+#define	DA9211_VBUCKB_GPI_SHIFT		5
+#define	DA9211_VBUCKB_GPI_MASK		0x60
+#define	DA9211_VBUCKB_GPI_OFF		0x00
+#define	DA9211_VBUCKB_GPI_GPIO1		0x20
+#define	DA9211_VBUCKB_GPI_GPIO2		0x40
+#define	DA9211_VBUCKB_GPI_GPIO4		0x60
+
+/* DA9211_REG_BUCK_ILIM (addr=0xD0) */
+#define DA9211_BUCKA_ILIM_SHIFT			0
+#define DA9211_BUCKA_ILIM_MASK			0x0F
+#define DA9211_BUCKB_ILIM_SHIFT			4
+#define DA9211_BUCKB_ILIM_MASK			0xF0
+
+/* DA9211_REG_BUCKA_CONF (addr=0xD1) */
+#define DA9211_BUCKA_MODE_SHIFT			0
+#define DA9211_BUCKA_MODE_MASK			0x03
+#define	DA9211_BUCKA_MODE_MANUAL		0x00
+#define	DA9211_BUCKA_MODE_SLEEP			0x01
+#define	DA9211_BUCKA_MODE_SYNC			0x02
+#define	DA9211_BUCKA_MODE_AUTO			0x03
+#define DA9211_BUCKA_UP_CTRL_SHIFT		2
+#define DA9211_BUCKA_UP_CTRL_MASK		0x1C
+#define DA9211_BUCKA_DOWN_CTRL_SHIFT	5
+#define DA9211_BUCKA_DOWN_CTRL_MASK		0xE0
+
+/* DA9211_REG_BUCKB_CONF (addr=0xD2) */
+#define DA9211_BUCKB_MODE_SHIFT			0
+#define DA9211_BUCKB_MODE_MASK			0x03
+#define	DA9211_BUCKB_MODE_MANUAL		0x00
+#define	DA9211_BUCKB_MODE_SLEEP			0x01
+#define	DA9211_BUCKB_MODE_SYNC			0x02
+#define	DA9211_BUCKB_MODE_AUTO			0x03
+#define DA9211_BUCKB_UP_CTRL_SHIFT		2
+#define DA9211_BUCKB_UP_CTRL_MASK		0x1C
+#define DA9211_BUCKB_DOWN_CTRL_SHIFT	5
+#define DA9211_BUCKB_DOWN_CTRL_MASK		0xE0
+
+/* DA9211_REG_BUCK_CONF (addr=0xD3) */
+#define DA9211_PHASE_SEL_A_SHIFT		0
+#define DA9211_PHASE_SEL_A_MASK			0x03
+#define DA9211_PHASE_SEL_B_SHIFT		2
+#define DA9211_PHASE_SEL_B_MASK			0x04
+#define DA9211_PH_SH_EN_A_SHIFT			3
+#define DA9211_PH_SH_EN_A_MASK			0x08
+#define DA9211_PH_SH_EN_B_SHIFT			4
+#define DA9211_PH_SH_EN_B_MASK			0x10
+
+/* DA9211_REG_VBUCKA_MAX (addr=0xD5) */
+#define DA9211_VBUCKA_BASE_SHIFT		0
+#define DA9211_VBUCKA_BASE_MASK			0x7F
+
+/* DA9211_REG_VBUCKB_MAX (addr=0xD6) */
+#define DA9211_VBUCKB_BASE_SHIFT		0
+#define DA9211_VBUCKB_BASE_MASK			0x7F
+
+/* DA9211_REG_VBUCKA/B_A/B (addr=0xD7/0xD8/0xD9/0xDA) */
+#define DA9211_VBUCK_SHIFT			0
+#define DA9211_VBUCK_MASK			0x7F
+#define DA9211_VBUCK_BIAS			0
+#define DA9211_BUCK_SL				0x80
+
+/* DA9211_REG_INTERFACE (addr=0x105) */
+#define DA9211_IF_BASE_ADDR_SHIFT		4
+#define DA9211_IF_BASE_ADDR_MASK		0xF0
+
+/* DA9211_REG_CONFIG_E (addr=0x147) */
+#define DA9211_SLAVE_SEL			0x40
+
+#endif	/* __DA9211_REGISTERS_H__ */

drivers/regulator/lp872x.c

@@ -845,7 +845,6 @@ static struct lp872x_platform_data
 	struct device_node *np = dev->of_node;
 	struct lp872x_platform_data *pdata;
 	struct of_regulator_match *match;
-	struct regulator_init_data *d;
 	int num_matches;
 	int count;
 	int i;
@@ -892,14 +891,6 @@ static struct lp872x_platform_data
 		pdata->regulator_data[i].id =
 				(enum lp872x_regulator_id)match[i].driver_data;
 		pdata->regulator_data[i].init_data = match[i].init_data;
-
-		/* Operation mode configuration for buck/buck1/buck2 */
-		if (strncmp(match[i].name, "buck", 4))
-			continue;
-
-		d = pdata->regulator_data[i].init_data;
-		d->constraints.valid_modes_mask |= LP872X_VALID_OPMODE;
-		d->constraints.valid_ops_mask |= REGULATOR_CHANGE_MODE;
 	}
 out:
 	return pdata;

include/linux/regulator/consumer.h

@@ -37,6 +37,7 @@
 
 struct device;
 struct notifier_block;
+struct regmap;
 
 /*
  * Regulator operating modes.
@@ -215,6 +216,13 @@ int regulator_set_optimum_mode(struct regulator *regulator, int load_uA);
 
 int regulator_allow_bypass(struct regulator *regulator, bool allow);
 
+struct regmap *regulator_get_regmap(struct regulator *regulator);
+int regulator_get_hardware_vsel_register(struct regulator *regulator,
+					 unsigned *vsel_reg,
+					 unsigned *vsel_mask);
+int regulator_list_hardware_vsel(struct regulator *regulator,
+				 unsigned selector);
+
 /* regulator notifier block */
 int regulator_register_notifier(struct regulator *regulator,
 			      struct notifier_block *nb);
@@ -457,6 +465,24 @@ static inline int regulator_allow_bypass(struct regulator *regulator,
 	return 0;
 }
 
+static inline struct regmap *regulator_get_regmap(struct regulator *regulator)
+{
+	return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline int regulator_get_hardware_vsel_register(struct regulator *regulator,
+						       unsigned *vsel_reg,
+						       unsigned *vsel_mask)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int regulator_list_hardware_vsel(struct regulator *regulator,
+					       unsigned selector)
+{
+	return -EOPNOTSUPP;
+}
+
 static inline int regulator_register_notifier(struct regulator *regulator,
 			      struct notifier_block *nb)
 {

include/linux/regulator/da9211.h

@@ -0,0 +1,32 @@
+/*
+ * da9211.h - Regulator device driver for DA9211
+ * Copyright (C) 2014  Dialog Semiconductor Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ */
+
+#ifndef __LINUX_REGULATOR_DA9211_H
+#define __LINUX_REGULATOR_DA9211_H
+
+#include <linux/regulator/machine.h>
+
+#define DA9211_MAX_REGULATORS	2
+
+struct da9211_pdata {
+	/*
+	 * Number of buck
+	 * 1 : 4 phase 1 buck
+	 * 2 : 2 phase 2 buck
+	 */
+	int num_buck;
+	struct regulator_init_data *init_data;
+};
+#endif