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/*
* TI LM3632 MFD 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.
*
*/
#ifndef __MFD_LM3632_H__
#define __MFD_LM3632_H__
#include <linux/gpio.h>
#include <linux/pwm.h>
#include <linux/regmap.h>
#include <linux/regulator/machine.h>
/* Registers */
#define LM3632_REG_CONFIG1 0x02
#define LM3632_OVP_MASK (BIT(5) | BIT(6) | BIT(7))
#define LM3632_OVP_25V BIT(6)
#define LM3632_REG_CONFIG2 0x03
#define LM3632_SWFREQ_MASK BIT(7)
#define LM3632_SWFREQ_1MHZ BIT(7)
#define LM3632_REG_BRT_LSB 0x04
#define LM3632_BRT_LSB_MASK (BIT(0) | BIT(1) | BIT(2))
#define LM3632_REG_BRT_MSB 0x05
#define LM3632_BRT_MSB_SHIFT 3
#define LM3632_REG_IO_CTRL 0x09
#define LM3632_PWM_MASK BIT(6)
#define LM3632_PWM_SHIFT 6
#define LM3632_REG_ENABLE 0x0A
#define LM3632_BL_EN_MASK BIT(0)
#define LM3632_BL_EN_SHIFT 0
#define LM3632_BL_STRING_MASK (BIT(3) | BIT(4))
#define LM3632_BL_ONE_STRING BIT(4)
#define LM3632_BL_TWO_STRINGS BIT(3)
#define LM3632_REG_BIAS_CONFIG 0x0C
#define LM3632_EXT_EN_MASK BIT(0)
#define LM3632_EN_VNEG_MASK BIT(1)
#define LM3632_EN_VPOS_MASK BIT(2)
#define LM3632_REG_VOUT_BOOST 0x0D
#define LM3632_REG_VOUT_POS 0x0E
#define LM3632_REG_VOUT_NEG 0x0F
#define LM3632_VOUT_MASK 0x3F
#define LM3632_MAX_REGISTERS 0x10
#define LM3632_NUM_REGULATORS 3
/*
* struct lm3632_backlight_platform_data
* @name: Backlight driver name
* @is_full_strings: set true if two strings are used
* @pwm_period: Platform specific PWM period value. unit is nano
*/
struct lm3632_backlight_platform_data {
const char *name;
bool is_full_strings;
/* Only valid in case of PWM mode */
unsigned int pwm_period;
};
/*
* struct lm3632_platform_data
* @en_gpio: GPIO for chip enable pin
* @lcm_en1_gpio: GPIO for VPOS LDO
* @lcm_en2_gpio: GPIO for VNEG LDO
* @regulator_data: Regulator initial data for LCD bias
* @bl_pdata: Backlight platform data
*/
struct lm3632_platform_data {
int en_gpio;
int lcm_en1_gpio;
int lcm_en2_gpio;
struct regulator_init_data *regulator_data[LM3632_NUM_REGULATORS];
struct lm3632_backlight_platform_data *bl_pdata;
};
/*
* struct lm3632
* @dev: Parent device pointer
* @regmap: Used for i2c communcation on accessing registers
* @pdata: LMU platform specific data
*/
struct lm3632 {
struct device *dev;
struct regmap *regmap;
struct lm3632_platform_data *pdata;
};
int lm3632_read_byte(struct lm3632 *lm3632, u8 reg, u8 *read);
int lm3632_write_byte(struct lm3632 *lm3632, u8 reg, u8 data);
int lm3632_update_bits(struct lm3632 *lm3632, u8 reg, u8 mask, u8 data);
#endif
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