[linux-2.6-block.git] / drivers / regulator / da9055-regulator.c

/*
* Regulator driver for DA9055 PMIC
*
* Copyright(c) 2012 Dialog Semiconductor Ltd.
*
* Author: David Dajun Chen <dchen@diasemi.com>
*
* 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.
*
*/

#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/of.h>
#include <linux/regulator/of_regulator.h>

#include <linux/mfd/da9055/core.h>
#include <linux/mfd/da9055/reg.h>
#include <linux/mfd/da9055/pdata.h>

#define DA9055_MIN_UA		0
#define DA9055_MAX_UA		3

#define DA9055_LDO_MODE_SYNC	0
#define DA9055_LDO_MODE_SLEEP	1

#define DA9055_BUCK_MODE_SLEEP	1
#define DA9055_BUCK_MODE_SYNC	2
#define DA9055_BUCK_MODE_AUTO	3

/* DA9055 REGULATOR IDs */
#define DA9055_ID_BUCK1	0
#define DA9055_ID_BUCK2	1
#define DA9055_ID_LDO1		2
#define DA9055_ID_LDO2		3
#define DA9055_ID_LDO3		4
#define DA9055_ID_LDO4		5
#define DA9055_ID_LDO5		6
#define DA9055_ID_LDO6		7

/* DA9055 BUCK current limit */
static const int da9055_current_limits[] = { 500000, 600000, 700000, 800000 };

struct da9055_conf_reg {
	int reg;
	int sel_mask;
	int en_mask;
};

struct da9055_volt_reg {
	int reg_a;
	int reg_b;
	int sl_shift;
	int v_mask;
};

struct da9055_mode_reg {
	int reg;
	int mask;
	int shift;
};

struct da9055_regulator_info {
	struct regulator_desc reg_desc;
	struct da9055_conf_reg conf;
	struct da9055_volt_reg volt;
	struct da9055_mode_reg mode;
};

struct da9055_regulator {
	struct da9055 *da9055;
	struct da9055_regulator_info *info;
	struct regulator_dev *rdev;
	enum gpio_select reg_rselect;
};

static unsigned int da9055_buck_get_mode(struct regulator_dev *rdev)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;
	int ret, mode = 0;

	ret = da9055_reg_read(regulator->da9055, info->mode.reg);
	if (ret < 0)
		return ret;

	switch ((ret & info->mode.mask) >> info->mode.shift) {
	case DA9055_BUCK_MODE_SYNC:
		mode = REGULATOR_MODE_FAST;
		break;
	case DA9055_BUCK_MODE_AUTO:
		mode = REGULATOR_MODE_NORMAL;
		break;
	case DA9055_BUCK_MODE_SLEEP:
		mode = REGULATOR_MODE_STANDBY;
		break;
	}

	return mode;
}

static int da9055_buck_set_mode(struct regulator_dev *rdev,
					unsigned int mode)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;
	int val = 0;

	switch (mode) {
	case REGULATOR_MODE_FAST:
		val = DA9055_BUCK_MODE_SYNC << info->mode.shift;
		break;
	case REGULATOR_MODE_NORMAL:
		val = DA9055_BUCK_MODE_AUTO << info->mode.shift;
		break;
	case REGULATOR_MODE_STANDBY:
		val = DA9055_BUCK_MODE_SLEEP << info->mode.shift;
		break;
	}

	return da9055_reg_update(regulator->da9055, info->mode.reg,
				 info->mode.mask, val);
}

static unsigned int da9055_ldo_get_mode(struct regulator_dev *rdev)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;
	int ret;

	ret = da9055_reg_read(regulator->da9055, info->volt.reg_b);
	if (ret < 0)
		return ret;

	if (ret >> info->volt.sl_shift)
		return REGULATOR_MODE_STANDBY;
	else
		return REGULATOR_MODE_NORMAL;
}

static int da9055_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;
	struct da9055_volt_reg volt = info->volt;
	int val = 0;

	switch (mode) {
	case REGULATOR_MODE_NORMAL:
	case REGULATOR_MODE_FAST:
		val = DA9055_LDO_MODE_SYNC;
		break;
	case REGULATOR_MODE_STANDBY:
		val = DA9055_LDO_MODE_SLEEP;
		break;
	}

	return da9055_reg_update(regulator->da9055, volt.reg_b,
				 1 << volt.sl_shift,
				 val << volt.sl_shift);
}

static int da9055_buck_get_current_limit(struct regulator_dev *rdev)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;
	int ret;

	ret = da9055_reg_read(regulator->da9055, DA9055_REG_BUCK_LIM);
	if (ret < 0)
		return ret;

	ret &= info->mode.mask;
	return da9055_current_limits[ret >> info->mode.shift];
}

static int da9055_buck_set_current_limit(struct regulator_dev *rdev, int min_uA,
					 int max_uA)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;
	int i;

	for (i = ARRAY_SIZE(da9055_current_limits) - 1; i >= 0; i--) {
		if ((min_uA <= da9055_current_limits[i]) &&
		    (da9055_current_limits[i] <= max_uA))
			return da9055_reg_update(regulator->da9055,
						 DA9055_REG_BUCK_LIM,
						 info->mode.mask,
						 i << info->mode.shift);
	}

	return -EINVAL;
}

static int da9055_regulator_get_voltage_sel(struct regulator_dev *rdev)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;
	struct da9055_volt_reg volt = info->volt;
	int ret, sel;

	/*
	 * There are two voltage register set A & B for voltage ramping but
	 * either one of then can be active therefore we first determine
	 * the active register set.
	 */
	ret = da9055_reg_read(regulator->da9055, info->conf.reg);
	if (ret < 0)
		return ret;

	ret &= info->conf.sel_mask;

	/* Get the voltage for the active register set A/B */
	if (ret == DA9055_REGUALTOR_SET_A)
		ret = da9055_reg_read(regulator->da9055, volt.reg_a);
	else
		ret = da9055_reg_read(regulator->da9055, volt.reg_b);

	if (ret < 0)
		return ret;

	sel = (ret & volt.v_mask);
	return sel;
}

static int da9055_regulator_set_voltage_sel(struct regulator_dev *rdev,
					    unsigned int selector)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;
	int ret;

	/*
	 * Regulator register set A/B is not selected through GPIO therefore
	 * we use default register set A for voltage ramping.
	 */
	if (regulator->reg_rselect == NO_GPIO) {
		/* Select register set A */
		ret = da9055_reg_update(regulator->da9055, info->conf.reg,
					info->conf.sel_mask, DA9055_SEL_REG_A);
		if (ret < 0)
			return ret;

		/* Set the voltage */
		return da9055_reg_update(regulator->da9055, info->volt.reg_a,
					 info->volt.v_mask, selector);
	}

	/*
	 * Here regulator register set A/B is selected through GPIO.
	 * Therefore we first determine the selected register set A/B and
	 * then set the desired voltage for that register set A/B.
	 */
	ret = da9055_reg_read(regulator->da9055, info->conf.reg);
	if (ret < 0)
		return ret;

	ret &= info->conf.sel_mask;

	/* Set the voltage */
	if (ret == DA9055_REGUALTOR_SET_A)
		return da9055_reg_update(regulator->da9055, info->volt.reg_a,
					 info->volt.v_mask, selector);
	else
		return da9055_reg_update(regulator->da9055, info->volt.reg_b,
					 info->volt.v_mask, selector);
}

static int da9055_regulator_set_suspend_voltage(struct regulator_dev *rdev,
						int uV)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;
	int ret;

	/* Select register set B for suspend voltage ramping. */
	if (regulator->reg_rselect == NO_GPIO) {
		ret = da9055_reg_update(regulator->da9055, info->conf.reg,
					info->conf.sel_mask, DA9055_SEL_REG_B);
		if (ret < 0)
			return ret;
	}

	ret = regulator_map_voltage_linear(rdev, uV, uV);
	if (ret < 0)
		return ret;

	return da9055_reg_update(regulator->da9055, info->volt.reg_b,
				 info->volt.v_mask, ret);
}

static int da9055_suspend_enable(struct regulator_dev *rdev)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;

	/* Select register set B for voltage ramping. */
	if (regulator->reg_rselect == NO_GPIO)
		return da9055_reg_update(regulator->da9055, info->conf.reg,
					info->conf.sel_mask, DA9055_SEL_REG_B);
	else
		return 0;
}

static int da9055_suspend_disable(struct regulator_dev *rdev)
{
	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9055_regulator_info *info = regulator->info;

	/* Diselect register set B. */
	if (regulator->reg_rselect == NO_GPIO)
		return da9055_reg_update(regulator->da9055, info->conf.reg,
					info->conf.sel_mask, DA9055_SEL_REG_A);
	else
		return 0;
}

static const struct regulator_ops da9055_buck_ops = {
	.get_mode = da9055_buck_get_mode,
	.set_mode = da9055_buck_set_mode,

	.get_current_limit = da9055_buck_get_current_limit,
	.set_current_limit = da9055_buck_set_current_limit,

	.get_voltage_sel = da9055_regulator_get_voltage_sel,
	.set_voltage_sel = da9055_regulator_set_voltage_sel,
	.list_voltage = regulator_list_voltage_linear,
	.map_voltage = regulator_map_voltage_linear,
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,

	.set_suspend_voltage = da9055_regulator_set_suspend_voltage,
	.set_suspend_enable = da9055_suspend_enable,
	.set_suspend_disable = da9055_suspend_disable,
	.set_suspend_mode = da9055_buck_set_mode,
};

static const struct regulator_ops da9055_ldo_ops = {
	.get_mode = da9055_ldo_get_mode,
	.set_mode = da9055_ldo_set_mode,

	.get_voltage_sel = da9055_regulator_get_voltage_sel,
	.set_voltage_sel = da9055_regulator_set_voltage_sel,
	.list_voltage = regulator_list_voltage_linear,
	.map_voltage = regulator_map_voltage_linear,
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,

	.set_suspend_voltage = da9055_regulator_set_suspend_voltage,
	.set_suspend_enable = da9055_suspend_enable,
	.set_suspend_disable = da9055_suspend_disable,
	.set_suspend_mode = da9055_ldo_set_mode,

};

#define DA9055_LDO(_id, step, min, max, vbits, voffset) \
{\
	.reg_desc = {\
		.name = #_id,\
		.ops = &da9055_ldo_ops,\
		.type = REGULATOR_VOLTAGE,\
		.id = DA9055_ID_##_id,\
		.n_voltages = (max - min) / step + 1 + (voffset), \
		.enable_reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
		.enable_mask = 1, \
		.min_uV = (min) * 1000,\
		.uV_step = (step) * 1000,\
		.linear_min_sel = (voffset),\
		.owner = THIS_MODULE,\
	},\
	.conf = {\
		.reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
		.sel_mask = (1 << 4),\
		.en_mask = 1,\
	},\
	.volt = {\
		.reg_a = DA9055_REG_VBCORE_A + DA9055_ID_##_id, \
		.reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \
		.sl_shift = 7,\
		.v_mask = (1 << (vbits)) - 1,\
	},\
}

#define DA9055_BUCK(_id, step, min, max, vbits, voffset, mbits, sbits) \
{\
	.reg_desc = {\
		.name = #_id,\
		.ops = &da9055_buck_ops,\
		.type = REGULATOR_VOLTAGE,\
		.id = DA9055_ID_##_id,\
		.n_voltages = (max - min) / step + 1 + (voffset), \
		.enable_reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
		.enable_mask = 1,\
		.min_uV = (min) * 1000,\
		.uV_step = (step) * 1000,\
		.linear_min_sel = (voffset),\
		.owner = THIS_MODULE,\
	},\
	.conf = {\
		.reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
		.sel_mask = (1 << 4),\
		.en_mask = 1,\
	},\
	.volt = {\
		.reg_a = DA9055_REG_VBCORE_A + DA9055_ID_##_id, \
		.reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \
		.sl_shift = 7,\
		.v_mask = (1 << (vbits)) - 1,\
	},\
	.mode = {\
		.reg = DA9055_REG_BCORE_MODE,\
		.mask = (mbits),\
		.shift = (sbits),\
	},\
}

static struct da9055_regulator_info da9055_regulator_info[] = {
	DA9055_BUCK(BUCK1, 25, 725, 2075, 6, 9, 0xc, 2),
	DA9055_BUCK(BUCK2, 25, 925, 2500, 6, 0, 3, 0),
	DA9055_LDO(LDO1, 50, 900, 3300, 6, 2),
	DA9055_LDO(LDO2, 50, 900, 3300, 6, 3),
	DA9055_LDO(LDO3, 50, 900, 3300, 6, 2),
	DA9055_LDO(LDO4, 50, 900, 3300, 6, 2),
	DA9055_LDO(LDO5, 50, 900, 2750, 6, 2),
	DA9055_LDO(LDO6, 20, 900, 3300, 7, 0),
};

/*
 * Configures regulator to be controlled either through GPIO 1 or 2.
 * GPIO can control regulator state and/or select the regulator register
 * set A/B for voltage ramping.
 */
static int da9055_gpio_init(struct da9055_regulator *regulator,
			    struct regulator_config *config,
			    struct da9055_pdata *pdata, int id)
{
	struct da9055_regulator_info *info = regulator->info;
	int ret = 0;

	if (!pdata)
		return 0;

	if (pdata->gpio_ren && pdata->gpio_ren[id]) {
		char name[18];
		int gpio_mux = pdata->gpio_ren[id];

		config->ena_gpiod = pdata->ena_gpiods[id];
		config->ena_gpio_invert = 1;

		/*
		 * GPI pin is muxed with regulator to control the
		 * regulator state.
		 */
		sprintf(name, "DA9055 GPI %d", gpio_mux);
		ret = devm_gpio_request_one(config->dev, gpio_mux, GPIOF_DIR_IN,
					    name);
		if (ret < 0)
			goto err;

		/*
		 * Let the regulator know that its state is controlled
		 * through GPI.
		 */
		ret = da9055_reg_update(regulator->da9055, info->conf.reg,
					DA9055_E_GPI_MASK,
					pdata->reg_ren[id]
					<< DA9055_E_GPI_SHIFT);
		if (ret < 0)
			goto err;
	}

	if (pdata->gpio_rsel && pdata->gpio_rsel[id]) {
		char name[18];
		int gpio_mux = pdata->gpio_rsel[id];

		regulator->reg_rselect = pdata->reg_rsel[id];

		/*
		 * GPI pin is muxed with regulator to select the
		 * regulator register set A/B for voltage ramping.
		 */
		sprintf(name, "DA9055 GPI %d", gpio_mux);
		ret = devm_gpio_request_one(config->dev, gpio_mux, GPIOF_DIR_IN,
					    name);
		if (ret < 0)
			goto err;

		/*
		 * Let the regulator know that its register set A/B
		 * will be selected through GPI for voltage ramping.
		 */
		ret = da9055_reg_update(regulator->da9055, info->conf.reg,
					DA9055_V_GPI_MASK,
					pdata->reg_rsel[id]
					<< DA9055_V_GPI_SHIFT);
	}

err:
	return ret;
}

static irqreturn_t da9055_ldo5_6_oc_irq(int irq, void *data)
{
	struct da9055_regulator *regulator = data;

	regulator_notifier_call_chain(regulator->rdev,
				      REGULATOR_EVENT_OVER_CURRENT, NULL);

	return IRQ_HANDLED;
}

static inline struct da9055_regulator_info *find_regulator_info(int id)
{
	struct da9055_regulator_info *info;
	int i;

	for (i = 0; i < ARRAY_SIZE(da9055_regulator_info); i++) {
		info = &da9055_regulator_info[i];
		if (info->reg_desc.id == id)
			return info;
	}

	return NULL;
}

#ifdef CONFIG_OF
static struct of_regulator_match da9055_reg_matches[] = {
	{ .name = "BUCK1", },
	{ .name = "BUCK2", },
	{ .name = "LDO1", },
	{ .name = "LDO2", },
	{ .name = "LDO3", },
	{ .name = "LDO4", },
	{ .name = "LDO5", },
	{ .name = "LDO6", },
};

static int da9055_regulator_dt_init(struct platform_device *pdev,
				    struct da9055_regulator *regulator,
				    struct regulator_config *config,
				    int regid)
{
	struct device_node *nproot, *np;
	int ret;

	nproot = of_node_get(pdev->dev.parent->of_node);
	if (!nproot)
		return -ENODEV;

	np = of_get_child_by_name(nproot, "regulators");
	if (!np)
		return -ENODEV;

	ret = of_regulator_match(&pdev->dev, np, &da9055_reg_matches[regid], 1);
	of_node_put(nproot);
	if (ret < 0) {
		dev_err(&pdev->dev, "Error matching regulator: %d\n", ret);
		return ret;
	}

	config->init_data = da9055_reg_matches[regid].init_data;
	config->of_node = da9055_reg_matches[regid].of_node;

	if (!config->of_node)
		return -ENODEV;

	return 0;
}
#else
static inline int da9055_regulator_dt_init(struct platform_device *pdev,
				       struct da9055_regulator *regulator,
				       struct regulator_config *config,
				       int regid)
{
	return -ENODEV;
}
#endif /* CONFIG_OF */

static int da9055_regulator_probe(struct platform_device *pdev)
{
	struct regulator_config config = { };
	struct da9055_regulator *regulator;
	struct da9055 *da9055 = dev_get_drvdata(pdev->dev.parent);
	struct da9055_pdata *pdata = dev_get_platdata(da9055->dev);
	int ret, irq;

	regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9055_regulator),
				 GFP_KERNEL);
	if (!regulator)
		return -ENOMEM;

	regulator->info = find_regulator_info(pdev->id);
	if (regulator->info == NULL) {
		dev_err(&pdev->dev, "invalid regulator ID specified\n");
		return -EINVAL;
	}

	regulator->da9055 = da9055;
	config.dev = &pdev->dev;
	config.driver_data = regulator;
	config.regmap = da9055->regmap;

	if (pdata) {
		config.init_data = pdata->regulators[pdev->id];
	} else {
		ret = da9055_regulator_dt_init(pdev, regulator, &config,
					       pdev->id);
		if (ret < 0)
			return ret;
	}

	ret = da9055_gpio_init(regulator, &config, pdata, pdev->id);
	if (ret < 0)
		return ret;

	regulator->rdev = devm_regulator_register(&pdev->dev,
						  &regulator->info->reg_desc,
						  &config);
	if (IS_ERR(regulator->rdev)) {
		dev_err(&pdev->dev, "Failed to register regulator %s\n",
			regulator->info->reg_desc.name);
		return PTR_ERR(regulator->rdev);
	}

	/* Only LDO 5 and 6 has got the over current interrupt */
	if (pdev->id == DA9055_ID_LDO5 || pdev->id ==  DA9055_ID_LDO6) {
		irq = platform_get_irq_byname(pdev, "REGULATOR");
		if (irq < 0)
			return irq;

		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
						da9055_ldo5_6_oc_irq,
						IRQF_TRIGGER_HIGH |
						IRQF_ONESHOT |
						IRQF_PROBE_SHARED,
						pdev->name, regulator);
		if (ret != 0) {
			if (ret != -EBUSY) {
				dev_err(&pdev->dev,
				"Failed to request Regulator IRQ %d: %d\n",
				irq, ret);
				return ret;
			}
		}
	}

	platform_set_drvdata(pdev, regulator);

	return 0;
}

static struct platform_driver da9055_regulator_driver = {
	.probe = da9055_regulator_probe,
	.driver = {
		.name = "da9055-regulator",
	},
};

static int __init da9055_regulator_init(void)
{
	return platform_driver_register(&da9055_regulator_driver);
}
subsys_initcall(da9055_regulator_init);

static void __exit da9055_regulator_exit(void)
{
	platform_driver_unregister(&da9055_regulator_driver);
}
module_exit(da9055_regulator_exit);

MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
MODULE_DESCRIPTION("Power Regulator driver for Dialog DA9055 PMIC");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:da9055-regulator");
Commit	Line	Data
f6130be6 AJ	1	/*
	2	* Regulator driver for DA9055 PMIC
	3	*
	4	* Copyright(c) 2012 Dialog Semiconductor Ltd.
	5	*
	6	* Author: David Dajun Chen <dchen@diasemi.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	*/
	14
	15	#include <linux/module.h>
	16	#include <linux/init.h>
	17	#include <linux/err.h>
	18	#include <linux/gpio.h>
8d05560d	19	#include <linux/gpio/consumer.h>
f6130be6 AJ	20	#include <linux/platform_device.h>
	21	#include <linux/regulator/driver.h>
	22	#include <linux/regulator/machine.h>
8b61a28d AT	23	#include <linux/of.h>
8b61a28d AT	24	#include <linux/regulator/of_regulator.h>
f6130be6 AJ	25
	26	#include <linux/mfd/da9055/core.h>
	27	#include <linux/mfd/da9055/reg.h>
	28	#include <linux/mfd/da9055/pdata.h>
	29
	30	#define DA9055_MIN_UA 0
	31	#define DA9055_MAX_UA 3
	32
	33	#define DA9055_LDO_MODE_SYNC 0
	34	#define DA9055_LDO_MODE_SLEEP 1
	35
	36	#define DA9055_BUCK_MODE_SLEEP 1
	37	#define DA9055_BUCK_MODE_SYNC 2
	38	#define DA9055_BUCK_MODE_AUTO 3
	39
	40	/* DA9055 REGULATOR IDs */
	41	#define DA9055_ID_BUCK1 0
	42	#define DA9055_ID_BUCK2 1
	43	#define DA9055_ID_LDO1 2
	44	#define DA9055_ID_LDO2 3
	45	#define DA9055_ID_LDO3 4
	46	#define DA9055_ID_LDO4 5
	47	#define DA9055_ID_LDO5 6
	48	#define DA9055_ID_LDO6 7
	49
	50	/* DA9055 BUCK current limit */
	51	static const int da9055_current_limits[] = { 500000, 600000, 700000, 800000 };
	52
	53	struct da9055_conf_reg {
	54	int reg;
	55	int sel_mask;
	56	int en_mask;
	57	};
	58
	59	struct da9055_volt_reg {
	60	int reg_a;
	61	int reg_b;
	62	int sl_shift;
f6130be6	63	int v_mask;
f6130be6 AJ	64	};
	65
	66	struct da9055_mode_reg {
	67	int reg;
	68	int mask;
	69	int shift;
	70	};
	71
	72	struct da9055_regulator_info {
	73	struct regulator_desc reg_desc;
	74	struct da9055_conf_reg conf;
	75	struct da9055_volt_reg volt;
	76	struct da9055_mode_reg mode;
	77	};
	78
	79	struct da9055_regulator {
	80	struct da9055 *da9055;
	81	struct da9055_regulator_info *info;
	82	struct regulator_dev *rdev;
	83	enum gpio_select reg_rselect;
	84	};
	85
	86	static unsigned int da9055_buck_get_mode(struct regulator_dev *rdev)
	87	{
	88	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	89	struct da9055_regulator_info *info = regulator->info;
	90	int ret, mode = 0;
	91
	92	ret = da9055_reg_read(regulator->da9055, info->mode.reg);
	93	if (ret < 0)
	94	return ret;
	95
	96	switch ((ret & info->mode.mask) >> info->mode.shift) {
	97	case DA9055_BUCK_MODE_SYNC:
	98	mode = REGULATOR_MODE_FAST;
	99	break;
	100	case DA9055_BUCK_MODE_AUTO:
	101	mode = REGULATOR_MODE_NORMAL;
	102	break;
	103	case DA9055_BUCK_MODE_SLEEP:
	104	mode = REGULATOR_MODE_STANDBY;
	105	break;
	106	}
	107
	108	return mode;
	109	}
	110
	111	static int da9055_buck_set_mode(struct regulator_dev *rdev,
	112	unsigned int mode)
	113	{
	114	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	115	struct da9055_regulator_info *info = regulator->info;
	116	int val = 0;
	117
	118	switch (mode) {
	119	case REGULATOR_MODE_FAST:
	120	val = DA9055_BUCK_MODE_SYNC << info->mode.shift;
	121	break;
	122	case REGULATOR_MODE_NORMAL:
	123	val = DA9055_BUCK_MODE_AUTO << info->mode.shift;
	124	break;
	125	case REGULATOR_MODE_STANDBY:
	126	val = DA9055_BUCK_MODE_SLEEP << info->mode.shift;
	127	break;
128	}
129
130	return da9055_reg_update(regulator->da9055, info->mode.reg,
131	info->mode.mask, val);
132	}
133
134	static unsigned int da9055_ldo_get_mode(struct regulator_dev *rdev)
135	{
136	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
137	struct da9055_regulator_info *info = regulator->info;
138	int ret;
139
140	ret = da9055_reg_read(regulator->da9055, info->volt.reg_b);
141	if (ret < 0)
142	return ret;
143
144	if (ret >> info->volt.sl_shift)
145	return REGULATOR_MODE_STANDBY;
146	else
147	return REGULATOR_MODE_NORMAL;
148	}
149
150	static int da9055_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode)
151	{
152	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
153	struct da9055_regulator_info *info = regulator->info;
154	struct da9055_volt_reg volt = info->volt;
155	int val = 0;
156
157	switch (mode) {
158	case REGULATOR_MODE_NORMAL:
159	case REGULATOR_MODE_FAST:
160	val = DA9055_LDO_MODE_SYNC;
161	break;
162	case REGULATOR_MODE_STANDBY:
163	val = DA9055_LDO_MODE_SLEEP;
164	break;
165	}
166
167	return da9055_reg_update(regulator->da9055, volt.reg_b,
168	1 << volt.sl_shift,
169	val << volt.sl_shift);
170	}
171
172	static int da9055_buck_get_current_limit(struct regulator_dev *rdev)
173	{
174	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
175	struct da9055_regulator_info *info = regulator->info;
176	int ret;
177
178	ret = da9055_reg_read(regulator->da9055, DA9055_REG_BUCK_LIM);
179	if (ret < 0)
180	return ret;
181
182	ret &= info->mode.mask;
183	return da9055_current_limits[ret >> info->mode.shift];
184	}
185
186	static int da9055_buck_set_current_limit(struct regulator_dev *rdev, int min_uA,
187	int max_uA)
188	{
189	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
190	struct da9055_regulator_info *info = regulator->info;
f509fd46 AL	191	int i;
	192
	193	for (i = ARRAY_SIZE(da9055_current_limits) - 1; i >= 0; i--) {
	194	if ((min_uA <= da9055_current_limits[i]) &&
	195	(da9055_current_limits[i] <= max_uA))
	196	return da9055_reg_update(regulator->da9055,
	197	DA9055_REG_BUCK_LIM,
	198	info->mode.mask,
	199	i << info->mode.shift);
f6130be6 AJ	200	}
f6130be6 AJ	201
f509fd46	202	return -EINVAL;
f6130be6 AJ	203	}
	204
	205	static int da9055_regulator_get_voltage_sel(struct regulator_dev *rdev)
	206	{
	207	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	208	struct da9055_regulator_info *info = regulator->info;
	209	struct da9055_volt_reg volt = info->volt;
	210	int ret, sel;
	211
	212	/*
	213	* There are two voltage register set A & B for voltage ramping but
	214	* either one of then can be active therefore we first determine
	215	* the active register set.
	216	*/
	217	ret = da9055_reg_read(regulator->da9055, info->conf.reg);
	218	if (ret < 0)
	219	return ret;
	220
	221	ret &= info->conf.sel_mask;
	222
	223	/* Get the voltage for the active register set A/B */
	224	if (ret == DA9055_REGUALTOR_SET_A)
	225	ret = da9055_reg_read(regulator->da9055, volt.reg_a);
	226	else
	227	ret = da9055_reg_read(regulator->da9055, volt.reg_b);
	228
	229	if (ret < 0)
	230	return ret;
	231
	232	sel = (ret & volt.v_mask);
6b1f8a45	233	return sel;
f6130be6 AJ	234	}
f6130be6 AJ	235
f6130be6 AJ	236	static int da9055_regulator_set_voltage_sel(struct regulator_dev *rdev,
	237	unsigned int selector)
	238	{
	239	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	240	struct da9055_regulator_info *info = regulator->info;
	241	int ret;
	242
	243	/*
	244	* Regulator register set A/B is not selected through GPIO therefore
	245	* we use default register set A for voltage ramping.
	246	*/
	247	if (regulator->reg_rselect == NO_GPIO) {
	248	/* Select register set A */
	249	ret = da9055_reg_update(regulator->da9055, info->conf.reg,
	250	info->conf.sel_mask, DA9055_SEL_REG_A);
	251	if (ret < 0)
	252	return ret;
	253
	254	/* Set the voltage */
369cf602 AL	255	return da9055_reg_update(regulator->da9055, info->volt.reg_a,
369cf602 AL	256	info->volt.v_mask, selector);
f6130be6 AJ	257	}
	258
	259	/*
	260	* Here regulator register set A/B is selected through GPIO.
	261	* Therefore we first determine the selected register set A/B and
	262	* then set the desired voltage for that register set A/B.
	263	*/
	264	ret = da9055_reg_read(regulator->da9055, info->conf.reg);
	265	if (ret < 0)
	266	return ret;
	267
	268	ret &= info->conf.sel_mask;
	269
	270	/* Set the voltage */
	271	if (ret == DA9055_REGUALTOR_SET_A)
369cf602 AL	272	return da9055_reg_update(regulator->da9055, info->volt.reg_a,
369cf602 AL	273	info->volt.v_mask, selector);
f6130be6	274	else
369cf602 AL	275	return da9055_reg_update(regulator->da9055, info->volt.reg_b,
369cf602 AL	276	info->volt.v_mask, selector);
f6130be6 AJ	277	}
	278
	279	static int da9055_regulator_set_suspend_voltage(struct regulator_dev *rdev,
	280	int uV)
	281	{
	282	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	283	struct da9055_regulator_info *info = regulator->info;
	284	int ret;
	285
	286	/* Select register set B for suspend voltage ramping. */
	287	if (regulator->reg_rselect == NO_GPIO) {
	288	ret = da9055_reg_update(regulator->da9055, info->conf.reg,
	289	info->conf.sel_mask, DA9055_SEL_REG_B);
	290	if (ret < 0)
	291	return ret;
	292	}
	293
6b1f8a45	294	ret = regulator_map_voltage_linear(rdev, uV, uV);
f6130be6 AJ	295	if (ret < 0)
	296	return ret;
	297
369cf602 AL	298	return da9055_reg_update(regulator->da9055, info->volt.reg_b,
369cf602 AL	299	info->volt.v_mask, ret);
f6130be6 AJ	300	}
	301
	302	static int da9055_suspend_enable(struct regulator_dev *rdev)
	303	{
	304	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	305	struct da9055_regulator_info *info = regulator->info;
	306
	307	/* Select register set B for voltage ramping. */
	308	if (regulator->reg_rselect == NO_GPIO)
	309	return da9055_reg_update(regulator->da9055, info->conf.reg,
	310	info->conf.sel_mask, DA9055_SEL_REG_B);
	311	else
	312	return 0;
	313	}
	314
	315	static int da9055_suspend_disable(struct regulator_dev *rdev)
	316	{
	317	struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
	318	struct da9055_regulator_info *info = regulator->info;
	319
	320	/* Diselect register set B. */
	321	if (regulator->reg_rselect == NO_GPIO)
	322	return da9055_reg_update(regulator->da9055, info->conf.reg,
	323	info->conf.sel_mask, DA9055_SEL_REG_A);
	324	else
	325	return 0;
	326	}
	327
71242b49	328	static const struct regulator_ops da9055_buck_ops = {
f6130be6 AJ	329	.get_mode = da9055_buck_get_mode,
	330	.set_mode = da9055_buck_set_mode,
	331
	332	.get_current_limit = da9055_buck_get_current_limit,
	333	.set_current_limit = da9055_buck_set_current_limit,
	334
	335	.get_voltage_sel = da9055_regulator_get_voltage_sel,
	336	.set_voltage_sel = da9055_regulator_set_voltage_sel,
6b1f8a45 AL	337	.list_voltage = regulator_list_voltage_linear,
6b1f8a45 AL	338	.map_voltage = regulator_map_voltage_linear,
f6130be6 AJ	339	.is_enabled = regulator_is_enabled_regmap,
	340	.enable = regulator_enable_regmap,
	341	.disable = regulator_disable_regmap,
	342
	343	.set_suspend_voltage = da9055_regulator_set_suspend_voltage,
	344	.set_suspend_enable = da9055_suspend_enable,
	345	.set_suspend_disable = da9055_suspend_disable,
	346	.set_suspend_mode = da9055_buck_set_mode,
	347	};
	348
71242b49	349	static const struct regulator_ops da9055_ldo_ops = {
f6130be6 AJ	350	.get_mode = da9055_ldo_get_mode,
	351	.set_mode = da9055_ldo_set_mode,
	352
	353	.get_voltage_sel = da9055_regulator_get_voltage_sel,
	354	.set_voltage_sel = da9055_regulator_set_voltage_sel,
6b1f8a45 AL	355	.list_voltage = regulator_list_voltage_linear,
6b1f8a45 AL	356	.map_voltage = regulator_map_voltage_linear,
f6130be6 AJ	357	.is_enabled = regulator_is_enabled_regmap,
	358	.enable = regulator_enable_regmap,
	359	.disable = regulator_disable_regmap,
	360
	361	.set_suspend_voltage = da9055_regulator_set_suspend_voltage,
	362	.set_suspend_enable = da9055_suspend_enable,
	363	.set_suspend_disable = da9055_suspend_disable,
	364	.set_suspend_mode = da9055_ldo_set_mode,
	365
	366	};
	367
	368	#define DA9055_LDO(_id, step, min, max, vbits, voffset) \
	369	{\
	370	.reg_desc = {\
	371	.name = #_id,\
	372	.ops = &da9055_ldo_ops,\
	373	.type = REGULATOR_VOLTAGE,\
	374	.id = DA9055_ID_##_id,\
369cf602	375	.n_voltages = (max - min) / step + 1 + (voffset), \
f6130be6 AJ	376	.enable_reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
	377	.enable_mask = 1, \
	378	.min_uV = (min) * 1000,\
	379	.uV_step = (step) * 1000,\
6b1f8a45	380	.linear_min_sel = (voffset),\
f6130be6 AJ	381	.owner = THIS_MODULE,\
	382	},\
	383	.conf = {\
	384	.reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
	385	.sel_mask = (1 << 4),\
	386	.en_mask = 1,\
	387	},\
	388	.volt = {\
	389	.reg_a = DA9055_REG_VBCORE_A + DA9055_ID_##_id, \
	390	.reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \
	391	.sl_shift = 7,\
f6130be6	392	.v_mask = (1 << (vbits)) - 1,\
f6130be6 AJ	393	},\
	394	}
	395
	396	#define DA9055_BUCK(_id, step, min, max, vbits, voffset, mbits, sbits) \
	397	{\
	398	.reg_desc = {\
	399	.name = #_id,\
	400	.ops = &da9055_buck_ops,\
	401	.type = REGULATOR_VOLTAGE,\
	402	.id = DA9055_ID_##_id,\
369cf602	403	.n_voltages = (max - min) / step + 1 + (voffset), \
f6130be6 AJ	404	.enable_reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
	405	.enable_mask = 1,\
	406	.min_uV = (min) * 1000,\
	407	.uV_step = (step) * 1000,\
6b1f8a45	408	.linear_min_sel = (voffset),\
f6130be6 AJ	409	.owner = THIS_MODULE,\
	410	},\
	411	.conf = {\
	412	.reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
	413	.sel_mask = (1 << 4),\
	414	.en_mask = 1,\
	415	},\
	416	.volt = {\
	417	.reg_a = DA9055_REG_VBCORE_A + DA9055_ID_##_id, \
	418	.reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \
	419	.sl_shift = 7,\
f6130be6	420	.v_mask = (1 << (vbits)) - 1,\
f6130be6 AJ	421	},\
	422	.mode = {\
	423	.reg = DA9055_REG_BCORE_MODE,\
	424	.mask = (mbits),\
	425	.shift = (sbits),\
	426	},\
	427	}
	428
	429	static struct da9055_regulator_info da9055_regulator_info[] = {
	430	DA9055_BUCK(BUCK1, 25, 725, 2075, 6, 9, 0xc, 2),
	431	DA9055_BUCK(BUCK2, 25, 925, 2500, 6, 0, 3, 0),
	432	DA9055_LDO(LDO1, 50, 900, 3300, 6, 2),
	433	DA9055_LDO(LDO2, 50, 900, 3300, 6, 3),
	434	DA9055_LDO(LDO3, 50, 900, 3300, 6, 2),
	435	DA9055_LDO(LDO4, 50, 900, 3300, 6, 2),
	436	DA9055_LDO(LDO5, 50, 900, 2750, 6, 2),
	437	DA9055_LDO(LDO6, 20, 900, 3300, 7, 0),
	438	};
	439
	440	/*
	441	* Configures regulator to be controlled either through GPIO 1 or 2.
	442	* GPIO can control regulator state and/or select the regulator register
	443	* set A/B for voltage ramping.
	444	*/
3d68dfe3 GKH	445	static int da9055_gpio_init(struct da9055_regulator *regulator,
	446	struct regulator_config *config,
	447	struct da9055_pdata *pdata, int id)
f6130be6 AJ	448	{
	449	struct da9055_regulator_info *info = regulator->info;
	450	int ret = 0;
	451
8b61a28d AT	452	if (!pdata)
	453	return 0;
	454
f6130be6 AJ	455	if (pdata->gpio_ren && pdata->gpio_ren[id]) {
	456	char name[18];
	457	int gpio_mux = pdata->gpio_ren[id];
	458
8d05560d	459	config->ena_gpiod = pdata->ena_gpiods[id];
f6130be6 AJ	460	config->ena_gpio_invert = 1;
	461
	462	/*
	463	* GPI pin is muxed with regulator to control the
	464	* regulator state.
	465	*/
	466	sprintf(name, "DA9055 GPI %d", gpio_mux);
	467	ret = devm_gpio_request_one(config->dev, gpio_mux, GPIOF_DIR_IN,
	468	name);
	469	if (ret < 0)
	470	goto err;
	471
	472	/*
	473	* Let the regulator know that its state is controlled
	474	* through GPI.
	475	*/
	476	ret = da9055_reg_update(regulator->da9055, info->conf.reg,
	477	DA9055_E_GPI_MASK,
	478	pdata->reg_ren[id]
	479	<< DA9055_E_GPI_SHIFT);
	480	if (ret < 0)
	481	goto err;
	482	}
	483
26cbd307	484	if (pdata->gpio_rsel && pdata->gpio_rsel[id]) {
f6130be6 AJ	485	char name[18];
	486	int gpio_mux = pdata->gpio_rsel[id];
	487
	488	regulator->reg_rselect = pdata->reg_rsel[id];
	489
	490	/*
	491	* GPI pin is muxed with regulator to select the
	492	* regulator register set A/B for voltage ramping.
	493	*/
	494	sprintf(name, "DA9055 GPI %d", gpio_mux);
	495	ret = devm_gpio_request_one(config->dev, gpio_mux, GPIOF_DIR_IN,
	496	name);
	497	if (ret < 0)
	498	goto err;
	499
	500	/*
	501	* Let the regulator know that its register set A/B
	502	* will be selected through GPI for voltage ramping.
	503	*/
	504	ret = da9055_reg_update(regulator->da9055, info->conf.reg,
	505	DA9055_V_GPI_MASK,
	506	pdata->reg_rsel[id]
	507	<< DA9055_V_GPI_SHIFT);
	508	}
	509
	510	err:
	511	return ret;
	512	}
	513
	514	static irqreturn_t da9055_ldo5_6_oc_irq(int irq, void *data)
	515	{
	516	struct da9055_regulator *regulator = data;
	517
	518	regulator_notifier_call_chain(regulator->rdev,
	519	REGULATOR_EVENT_OVER_CURRENT, NULL);
	520
	521	return IRQ_HANDLED;
	522	}
	523
	524	static inline struct da9055_regulator_info *find_regulator_info(int id)
	525	{
	526	struct da9055_regulator_info *info;
	527	int i;
	528
	529	for (i = 0; i < ARRAY_SIZE(da9055_regulator_info); i++) {
	530	info = &da9055_regulator_info[i];
	531	if (info->reg_desc.id == id)
	532	return info;
	533	}
	534
	535	return NULL;
	536	}
	537
8b61a28d AT	538	#ifdef CONFIG_OF
	539	static struct of_regulator_match da9055_reg_matches[] = {
	540	{ .name = "BUCK1", },
	541	{ .name = "BUCK2", },
	542	{ .name = "LDO1", },
	543	{ .name = "LDO2", },
	544	{ .name = "LDO3", },
	545	{ .name = "LDO4", },
	546	{ .name = "LDO5", },
	547	{ .name = "LDO6", },
	548	};
	549
	550	static int da9055_regulator_dt_init(struct platform_device *pdev,
	551	struct da9055_regulator *regulator,
	552	struct regulator_config *config,
	553	int regid)
	554	{
	555	struct device_node nproot, np;
	556	int ret;
	557
	558	nproot = of_node_get(pdev->dev.parent->of_node);
	559	if (!nproot)
	560	return -ENODEV;
	561
a4b4e66a	562	np = of_get_child_by_name(nproot, "regulators");
8b61a28d AT	563	if (!np)
	564	return -ENODEV;
	565
	566	ret = of_regulator_match(&pdev->dev, np, &da9055_reg_matches[regid], 1);
	567	of_node_put(nproot);
	568	if (ret < 0) {
	569	dev_err(&pdev->dev, "Error matching regulator: %d\n", ret);
fe2eb722	570	return ret;
8b61a28d AT	571	}
	572
	573	config->init_data = da9055_reg_matches[regid].init_data;
	574	config->of_node = da9055_reg_matches[regid].of_node;
	575
	576	if (!config->of_node)
	577	return -ENODEV;
	578
	579	return 0;
	580	}
	581	#else
dae6cdb4	582	static inline int da9055_regulator_dt_init(struct platform_device *pdev,
8b61a28d AT	583	struct da9055_regulator *regulator,
	584	struct regulator_config *config,
	585	int regid)
	586	{
	587	return -ENODEV;
	588	}
	589	#endif /* CONFIG_OF */
	590
3d68dfe3	591	static int da9055_regulator_probe(struct platform_device *pdev)
f6130be6 AJ	592	{
	593	struct regulator_config config = { };
	594	struct da9055_regulator *regulator;
	595	struct da9055 *da9055 = dev_get_drvdata(pdev->dev.parent);
dff91d0b	596	struct da9055_pdata *pdata = dev_get_platdata(da9055->dev);
f6130be6 AJ	597	int ret, irq;
f6130be6 AJ	598
f6130be6 AJ	599	regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9055_regulator),
	600	GFP_KERNEL);
	601	if (!regulator)
	602	return -ENOMEM;
	603
	604	regulator->info = find_regulator_info(pdev->id);
	605	if (regulator->info == NULL) {
	606	dev_err(&pdev->dev, "invalid regulator ID specified\n");
	607	return -EINVAL;
	608	}
	609
	610	regulator->da9055 = da9055;
	611	config.dev = &pdev->dev;
	612	config.driver_data = regulator;
	613	config.regmap = da9055->regmap;
	614
5a7d7d0f	615	if (pdata) {
f6130be6	616	config.init_data = pdata->regulators[pdev->id];
8b61a28d AT	617	} else {
	618	ret = da9055_regulator_dt_init(pdev, regulator, &config,
	619	pdev->id);
	620	if (ret < 0)
	621	return ret;
	622	}
f6130be6 AJ	623
	624	ret = da9055_gpio_init(regulator, &config, pdata, pdev->id);
	625	if (ret < 0)
	626	return ret;
	627
0d328806 AL	628	regulator->rdev = devm_regulator_register(&pdev->dev,
	629	&regulator->info->reg_desc,
	630	&config);
f6130be6 AJ	631	if (IS_ERR(regulator->rdev)) {
	632	dev_err(&pdev->dev, "Failed to register regulator %s\n",
	633	regulator->info->reg_desc.name);
0d328806	634	return PTR_ERR(regulator->rdev);
f6130be6 AJ	635	}
	636
	637	/* Only LDO 5 and 6 has got the over current interrupt */
	638	if (pdev->id == DA9055_ID_LDO5 \|\| pdev->id == DA9055_ID_LDO6) {
	639	irq = platform_get_irq_byname(pdev, "REGULATOR");
f17083c3 AT	640	if (irq < 0)
	641	return irq;
	642
f6130be6 AJ	643	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
	644	da9055_ldo5_6_oc_irq,
	645	IRQF_TRIGGER_HIGH \|
	646	IRQF_ONESHOT \|
	647	IRQF_PROBE_SHARED,
	648	pdev->name, regulator);
	649	if (ret != 0) {
	650	if (ret != -EBUSY) {
	651	dev_err(&pdev->dev,
	652	"Failed to request Regulator IRQ %d: %d\n",
	653	irq, ret);
0d328806	654	return ret;
f6130be6 AJ	655	}
	656	}
	657	}
	658
	659	platform_set_drvdata(pdev, regulator);
	660
f6130be6 AJ	661	return 0;
	662	}
	663
	664	static struct platform_driver da9055_regulator_driver = {
	665	.probe = da9055_regulator_probe,
f6130be6 AJ	666	.driver = {
f6130be6 AJ	667	.name = "da9055-regulator",
f6130be6 AJ	668	},
	669	};
	670
	671	static int __init da9055_regulator_init(void)
	672	{
	673	return platform_driver_register(&da9055_regulator_driver);
	674	}
	675	subsys_initcall(da9055_regulator_init);
	676
	677	static void __exit da9055_regulator_exit(void)
	678	{
	679	platform_driver_unregister(&da9055_regulator_driver);
	680	}
	681	module_exit(da9055_regulator_exit);
	682
	683	MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
	684	MODULE_DESCRIPTION("Power Regulator driver for Dialog DA9055 PMIC");
	685	MODULE_LICENSE("GPL");
	686	MODULE_ALIAS("platform:da9055-regulator");