linux-imx

/*

* Simple driver for Texas Instruments LM355x LED Flash driver chip

* Copyright (C) 2012 Texas Instruments

*

* 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/delay.h>

#include <linux/i2c.h>

#include <linux/gpio.h>

#include <linux/leds.h>

#include <linux/slab.h>

#include <linux/platform_device.h>

#include <linux/fs.h>

#include <linux/regmap.h>

#include <linux/platform_data/leds-lm355x.h>

​

enum lm355x_type {

    CHIP_LM3554 = 0,

    CHIP_LM3556,

};

​

enum lm355x_regs {

    REG_FLAG = 0,

    REG_TORCH_CFG,

    REG_TORCH_CTRL,

    REG_STROBE_CFG,

    REG_FLASH_CTRL,

    REG_INDI_CFG,

    REG_INDI_CTRL,

    REG_OPMODE,

    REG_MAX,

};

​

/* operation mode */

enum lm355x_mode {

    MODE_SHDN = 0,

    MODE_INDIC,

    MODE_TORCH,

    MODE_FLASH

};

​

/* register map info. */

struct lm355x_reg_data {

    u8 regno;

    u8 mask;

    u8 shift;

};

​

struct lm355x_chip_data {

    struct device *dev;

    enum lm355x_type type;

​

    struct led_classdev cdev_flash;

    struct led_classdev cdev_torch;

    struct led_classdev cdev_indicator;

​

    struct lm355x_platform_data *pdata;

    struct regmap *regmap;

    struct mutex lock;