linux-imx

/*

 * da9210-regulator.c - Regulator device driver for DA9210

 * Copyright (C) 2013  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.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,

 * Boston, MA  02110-1301, USA.

 */

​

#include <linux/err.h>

#include <linux/i2c.h>

#include <linux/module.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/of_device.h>

#include <linux/regulator/of_regulator.h>

#include <linux/regmap.h>

​

#include "da9210-regulator.h"

​

struct da9210 {

    struct regulator_dev *rdev;

    struct regmap *regmap;

};

​

static const struct regmap_config da9210_regmap_config = {

    .reg_bits = 8,

    .val_bits = 8,

};

​

static const struct regulator_ops da9210_buck_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,

    .set_current_limit = regulator_set_current_limit_regmap,

    .get_current_limit = regulator_get_current_limit_regmap,

};

​

/* Default limits measured in millivolts and milliamps */

#define DA9210_MIN_MV       300

#define DA9210_MAX_MV       1570

#define DA9210_STEP_MV      10

​

/* Current limits for buck (uA) indices corresponds with register values */

static const unsigned int da9210_buck_limits[] = {

    1600000, 1800000, 2000000, 2200000, 2400000, 2600000, 2800000, 3000000,

    3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, 4600000