linux-imx

/*

 * TI LM363X Regulator Driver

 *

 * Copyright 2015 Texas Instruments

 *

 * Author: Milo Kim <milo.kim@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.

 */

​

#include <linux/err.h>

#include <linux/kernel.h>

#include <linux/mfd/ti-lmu.h>

#include <linux/mfd/ti-lmu-register.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/gpio/consumer.h>

#include <linux/platform_device.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/of_regulator.h>

#include <linux/slab.h>

​

/* LM3631 */

#define LM3631_BOOST_VSEL_MAX       0x25

#define LM3631_LDO_VSEL_MAX     0x28

#define LM3631_CONT_VSEL_MAX        0x03

#define LM3631_VBOOST_MIN       4500000

#define LM3631_VCONT_MIN        1800000

#define LM3631_VLDO_MIN         4000000

#define ENABLE_TIME_USEC        1000

​

/* LM3632 */

#define LM3632_BOOST_VSEL_MAX       0x26

#define LM3632_LDO_VSEL_MAX     0x29

#define LM3632_VBOOST_MIN       4500000

#define LM3632_VLDO_MIN         4000000

​

/* Common */

#define LM363X_STEP_50mV        50000

#define LM363X_STEP_500mV       500000

​

static const int ldo_cont_enable_time[] = {

    0, 2000, 5000, 10000, 20000, 50000, 100000, 200000,

};

​

static int lm363x_regulator_enable_time(struct regulator_dev *rdev)

{

    enum lm363x_regulator_id id = rdev_get_id(rdev);

    u8 val, addr, mask;

​

    switch (id) {

    case LM3631_LDO_CONT:

        addr = LM3631_REG_ENTIME_VCONT;

        mask = LM3631_ENTIME_CONT_MASK;

        break;

    case LM3631_LDO_OREF:

        addr = LM3631_REG_ENTIME_VOREF;

        mask = LM3631_ENTIME_MASK;

        break;

    case LM3631_LDO_POS:

        addr = LM3631_REG_ENTIME_VPOS;