linux-imx

/*

 * LP8755 High Performance Power Management Unit : System Interface Driver

 * (based on rev. 0.26)

 * Copyright 2012 Texas Instruments

 *

 * Author: Daniel(Geon Si) Jeong <daniel.jeong@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/module.h>

#include <linux/slab.h>

#include <linux/i2c.h>

#include <linux/err.h>

#include <linux/irq.h>

#include <linux/interrupt.h>

#include <linux/gpio.h>

#include <linux/regmap.h>

#include <linux/uaccess.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/platform_data/lp8755.h>

​

#define LP8755_REG_BUCK0    0x00

#define LP8755_REG_BUCK1    0x03

#define LP8755_REG_BUCK2    0x04

#define LP8755_REG_BUCK3    0x01

#define LP8755_REG_BUCK4    0x05

#define LP8755_REG_BUCK5    0x02

#define LP8755_REG_MAX      0xFF

​

#define LP8755_BUCK_EN_M    BIT(7)

#define LP8755_BUCK_LINEAR_OUT_MAX  0x76

#define LP8755_BUCK_VOUT_M  0x7F

​

struct lp8755_mphase {

    int nreg;

    int buck_num[LP8755_BUCK_MAX];

};

​

struct lp8755_chip {

    struct device *dev;

    struct regmap *regmap;

    struct lp8755_platform_data *pdata;

​

    int irq;

    unsigned int irqmask;

​

    int mphase;

    struct regulator_dev *rdev[LP8755_BUCK_MAX];

};

​

/**

 *lp8755_read : read a single register value from lp8755.

 *@pchip : device to read from

 *@reg   : register to read from

 *@val   : pointer to store read value

 */

static int lp8755_read(struct lp8755_chip *pchip, unsigned int reg,

               unsigned int *val)