linux-imx

/*

 * pv88090-regulator.c - Regulator device driver for PV88090

 * Copyright (C) 2015  Powerventure Semiconductor Ltd.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

​

#include <linux/err.h>

#include <linux/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 "pv88090-regulator.h"

​

#define PV88090_MAX_REGULATORS  5

​

/* PV88090 REGULATOR IDs */

enum {

    /* BUCKs */

    PV88090_ID_BUCK1,

    PV88090_ID_BUCK2,

    PV88090_ID_BUCK3,

​

    /* LDOs */

    PV88090_ID_LDO1,

    PV88090_ID_LDO2,

};

​

struct pv88090_regulator {

    struct regulator_desc desc;

    unsigned int conf;

    unsigned int conf2;

};

​

struct pv88090 {

    struct device *dev;

    struct regmap *regmap;

    struct regulator_dev *rdev[PV88090_MAX_REGULATORS];

};

​

struct pv88090_buck_voltage {

    int min_uV;

    int max_uV;

    int uV_step;

};

​

static const struct regmap_config pv88090_regmap_config = {

    .reg_bits = 8,

    .val_bits = 8,

};

​

/* Current limits array (in uA) for BUCK1, BUCK2, BUCK3.

 *  Entry indexes corresponds to register values.

 */

​

static const unsigned int pv88090_buck1_limits[] = {

     220000,  440000,  660000,  880000, 1100000, 1320000, 1540000, 1760000,

    1980000, 2200000, 2420000, 2640000, 2860000, 3080000, 3300000, 3520000,

    3740000, 3960000, 4180000, 4400000, 4620000, 4840000, 5060000, 5280000,

    5500000, 5720000, 5940000, 6160000, 6380000, 6600000, 6820000, 7040000

};

​

static const unsigned int pv88090_buck23_limits[] = {

    1496000, 2393000, 3291000, 4189000

};

​

static const struct pv88090_buck_voltage pv88090_buck_vol[3] = {

    {

        .min_uV = 600000,

        .max_uV = 1393750,

        .uV_step = 6250,

    },

​

    {

        .min_uV = 1400000,

        .max_uV = 2193750,

        .uV_step = 6250,

    },