linux-imx

/*

 * Copyright (C) ST-Ericsson SA 2010

 *

 * License Terms: GNU General Public License, version 2

 * Author: Hanumath Prasad <hanumath.prasad@stericsson.com> for ST-Ericsson

 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson

 */

​

#include <linux/module.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/irqdomain.h>

#include <linux/slab.h>

#include <linux/i2c.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/mfd/core.h>

#include <linux/mfd/tc3589x.h>

#include <linux/err.h>

​

/**

 * enum tc3589x_version - indicates the TC3589x version

 */

enum tc3589x_version {

    TC3589X_TC35890,

    TC3589X_TC35892,

    TC3589X_TC35893,

    TC3589X_TC35894,

    TC3589X_TC35895,

    TC3589X_TC35896,

    TC3589X_UNKNOWN,

};

​

#define TC3589x_CLKMODE_MODCTL_SLEEP        0x0

#define TC3589x_CLKMODE_MODCTL_OPERATION    (1 << 0)

​

/**

 * tc3589x_reg_read() - read a single TC3589x register

 * @tc3589x:    Device to read from

 * @reg:    Register to read

 */

int tc3589x_reg_read(struct tc3589x *tc3589x, u8 reg)

{

    int ret;

​

    ret = i2c_smbus_read_byte_data(tc3589x->i2c, reg);

    if (ret < 0)

        dev_err(tc3589x->dev, "failed to read reg %#x: %d\n",

            reg, ret);

​

    return ret;

}

EXPORT_SYMBOL_GPL(tc3589x_reg_read);

​

/**

 * tc3589x_reg_write() - write a single TC3589x register

 * @tc3589x:    Device to write to

 * @reg:    Register to read

 * @data:   Value to write

 */

int tc3589x_reg_write(struct tc3589x *tc3589x, u8 reg, u8 data)

{

    int ret;