linux-imx

/*

 * tps65218-regulator.c

 *

 * Regulator driver for TPS65218 PMIC

 *

 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/

 *

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

 * modify it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 * This program is distributed "as is" WITHOUT ANY WARRANTY of any

 * kind, whether expressed or implied; without even the implied warranty

 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License version 2 for more details.

 */

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/device.h>

#include <linux/init.h>

#include <linux/err.h>

#include <linux/platform_device.h>

#include <linux/of_device.h>

#include <linux/regmap.h>

#include <linux/regulator/of_regulator.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/mfd/tps65218.h>

​

#define TPS65218_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \

               _em, _cr, _cm, _lr, _nlr, _delay, _fuv, _sr, _sm) \

    {                           \

        .name           = _name,        \

        .of_match       = _of,          \

        .id         = _id,          \

        .ops            = &_ops,        \

        .n_voltages     = _n,           \

        .type           = _type,    \

        .owner          = THIS_MODULE,      \

        .vsel_reg       = _vr,          \

        .vsel_mask      = _vm,          \

        .csel_reg       = _cr,          \

        .csel_mask      = _cm,          \

        .enable_reg     = _er,          \

        .enable_mask        = _em,          \

        .volt_table     = NULL,         \

        .linear_ranges      = _lr,          \

        .n_linear_ranges    = _nlr,         \

        .ramp_delay     = _delay,       \

        .fixed_uV       = _fuv,         \

        .bypass_reg = _sr,              \

        .bypass_mask    = _sm,              \

    }                           \

​

static const struct regulator_linear_range dcdc1_dcdc2_ranges[] = {

    REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),

    REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),

};

​

static const struct regulator_linear_range ldo1_dcdc3_ranges[] = {

    REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000),

    REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000),

};

​

static const struct regulator_linear_range dcdc4_ranges[] = {

    REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000),

    REGULATOR_LINEAR_RANGE(1600000, 0x10, 0x34, 50000),

};

​

static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev,

                     unsigned selector)

{

    int ret;

    struct tps65218 *tps = rdev_get_drvdata(dev);

    unsigned int rid = rdev_get_id(dev);

​

    /* Set the voltage based on vsel value and write protect level is 2 */

    ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,

                selector, TPS65218_PROTECT_L1);

​

    /* Set GO bit for DCDC1/2 to initiate voltage transistion */

    switch (rid) {

    case TPS65218_DCDC_1:

    case TPS65218_DCDC_2:

        ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE,

                    TPS65218_SLEW_RATE_GO,

                    TPS65218_SLEW_RATE_GO,

                    TPS65218_PROTECT_L1);

        break;

    }

​