include/linux/mfd/lp8788.h - kernel/msm-4.19 - Gitiles

 /*
  * TI LP8788 MFD Device
  *
  * Copyright 2012 Texas Instruments
  *
  * Author: Milo(Woogyom) 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_LP8788_H__
 #define __MFD_LP8788_H__

 #include <linux/gpio.h>
 #include <linux/irqdomain.h>
 #include <linux/regmap.h>

 #define LP8788_DEV_BUCK		"lp8788-buck"
 #define LP8788_DEV_DLDO		"lp8788-dldo"
 #define LP8788_DEV_ALDO		"lp8788-aldo"
 #define LP8788_DEV_CHARGER	"lp8788-charger"
 #define LP8788_DEV_RTC		"lp8788-rtc"
 #define LP8788_DEV_BACKLIGHT	"lp8788-backlight"
 #define LP8788_DEV_VIBRATOR	"lp8788-vibrator"
 #define LP8788_DEV_KEYLED	"lp8788-keyled"
 #define LP8788_DEV_ADC		"lp8788-adc"

 #define LP8788_NUM_BUCKS	4
 #define LP8788_NUM_DLDOS	12
 #define LP8788_NUM_ALDOS	10
 #define LP8788_NUM_BUCK2_DVS	2

 #define LP8788_CHG_IRQ		"CHG_IRQ"
 #define LP8788_PRSW_IRQ		"PRSW_IRQ"
 #define LP8788_BATT_IRQ		"BATT_IRQ"
 #define LP8788_ALM_IRQ		"ALARM_IRQ"

 enum lp8788_int_id {
 	/* interrup register 1 : Addr 00h */
 	LP8788_INT_TSDL,
 	LP8788_INT_TSDH,
 	LP8788_INT_UVLO,
 	LP8788_INT_FLAGMON,
 	LP8788_INT_PWRON_TIME,
 	LP8788_INT_PWRON,
 	LP8788_INT_COMP1,
 	LP8788_INT_COMP2,

 	/* interrupt register 2 : Addr 01h */
 	LP8788_INT_CHG_INPUT_STATE,
 	LP8788_INT_CHG_STATE,
 	LP8788_INT_EOC,
 	LP8788_INT_CHG_RESTART,
 	LP8788_INT_RESTART_TIMEOUT,
 	LP8788_INT_FULLCHG_TIMEOUT,
 	LP8788_INT_PRECHG_TIMEOUT,

 	/* interrupt register 3 : Addr 02h */
 	LP8788_INT_RTC_ALARM1 = 17,
 	LP8788_INT_RTC_ALARM2,
 	LP8788_INT_ENTER_SYS_SUPPORT,
 	LP8788_INT_EXIT_SYS_SUPPORT,
 	LP8788_INT_BATT_LOW,
 	LP8788_INT_NO_BATT,

 	LP8788_INT_MAX = 24,
 };

 enum lp8788_dvs_sel {
 	DVS_SEL_V0,
 	DVS_SEL_V1,
 	DVS_SEL_V2,
 	DVS_SEL_V3,
 };

 enum lp8788_ext_ldo_en_id {
 	EN_ALDO1,
 	EN_ALDO234,
 	EN_ALDO5,
 	EN_ALDO7,
 	EN_DLDO7,
 	EN_DLDO911,
 	EN_LDOS_MAX,
 };

 enum lp8788_charger_event {
 	NO_CHARGER,
 	CHARGER_DETECTED,
 };

 enum lp8788_bl_ctrl_mode {
 	LP8788_BL_REGISTER_ONLY,
 	LP8788_BL_COMB_PWM_BASED,	/* PWM + I2C, changed by PWM input */
 	LP8788_BL_COMB_REGISTER_BASED,	/* PWM + I2C, changed by I2C */
 };

 enum lp8788_bl_dim_mode {
 	LP8788_DIM_EXPONENTIAL,
 	LP8788_DIM_LINEAR,
 };

 enum lp8788_bl_full_scale_current {
 	LP8788_FULLSCALE_5000uA,
 	LP8788_FULLSCALE_8500uA,
 	LP8788_FULLSCALE_1200uA,
 	LP8788_FULLSCALE_1550uA,
 	LP8788_FULLSCALE_1900uA,
 	LP8788_FULLSCALE_2250uA,
 	LP8788_FULLSCALE_2600uA,
 	LP8788_FULLSCALE_2950uA,
 };

 enum lp8788_bl_ramp_step {
 	LP8788_RAMP_8us,
 	LP8788_RAMP_1024us,
 	LP8788_RAMP_2048us,
 	LP8788_RAMP_4096us,
 	LP8788_RAMP_8192us,
 	LP8788_RAMP_16384us,
 	LP8788_RAMP_32768us,
 	LP8788_RAMP_65538us,
 };

 enum lp8788_bl_pwm_polarity {
 	LP8788_PWM_ACTIVE_HIGH,
 	LP8788_PWM_ACTIVE_LOW,
 };

 enum lp8788_isink_scale {
 	LP8788_ISINK_SCALE_100mA,
 	LP8788_ISINK_SCALE_120mA,
 };

 enum lp8788_isink_number {
 	LP8788_ISINK_1,
 	LP8788_ISINK_2,
 	LP8788_ISINK_3,
 };

 enum lp8788_alarm_sel {
 	LP8788_ALARM_1,
 	LP8788_ALARM_2,
 	LP8788_ALARM_MAX,
 };

 enum lp8788_adc_id {
 	LPADC_VBATT_5P5,
 	LPADC_VIN_CHG,
 	LPADC_IBATT,
 	LPADC_IC_TEMP,
 	LPADC_VBATT_6P0,
 	LPADC_VBATT_5P0,
 	LPADC_ADC1,
 	LPADC_ADC2,
 	LPADC_VDD,
 	LPADC_VCOIN,
 	LPADC_VDD_LDO,
 	LPADC_ADC3,
 	LPADC_ADC4,
 	LPADC_MAX,
 };

 struct lp8788;

 /*
  * lp8788_buck1_dvs
  * @gpio         : gpio pin number for dvs control
  * @vsel         : dvs selector for buck v1 register
  */
 struct lp8788_buck1_dvs {
 	int gpio;
 	enum lp8788_dvs_sel vsel;
 };

 /*
  * lp8788_buck2_dvs
  * @gpio         : two gpio pin numbers are used for dvs
  * @vsel         : dvs selector for buck v2 register
  */
 struct lp8788_buck2_dvs {
 	int gpio[LP8788_NUM_BUCK2_DVS];
 	enum lp8788_dvs_sel vsel;
 };

 /*
  * struct lp8788_ldo_enable_pin
  *
  *   Basically, all LDOs are enabled through the I2C commands.
  *   But ALDO 1 ~ 5, 7, DLDO 7, 9, 11 can be enabled by external gpio pins.
  *
  * @gpio         : gpio number which is used for enabling ldos
  * @init_state   : initial gpio state (ex. GPIOF_OUT_INIT_LOW)
  */
 struct lp8788_ldo_enable_pin {
 	int gpio;
 	int init_state;
 };

 /*
  * struct lp8788_chg_param
  * @addr         : charging control register address (range : 0x11 ~ 0x1C)
  * @val          : charging parameter value
  */
 struct lp8788_chg_param {
 	u8 addr;
 	u8 val;
 };

 /*
  * struct lp8788_charger_platform_data
  * @adc_vbatt         : adc channel name for battery voltage
  * @adc_batt_temp     : adc channel name for battery temperature
  * @max_vbatt_mv      : used for calculating battery capacity
  * @chg_params        : initial charging parameters
  * @num_chg_params    : numbers of charging parameters
  * @charger_event     : the charger event can be reported to the platform side
  */
 struct lp8788_charger_platform_data {
 	const char *adc_vbatt;
 	const char *adc_batt_temp;
 	unsigned int max_vbatt_mv;
 	struct lp8788_chg_param *chg_params;
 	int num_chg_params;
 	void (*charger_event) (struct lp8788 *lp,
 				enum lp8788_charger_event event);
 };

 /*
  * struct lp8788_bl_pwm_data
  * @pwm_set_intensity     : set duty of pwm
  * @pwm_get_intensity     : get current duty of pwm
  */
 struct lp8788_bl_pwm_data {
 	void (*pwm_set_intensity) (int brightness, int max_brightness);
 	int (*pwm_get_intensity) (int max_brightness);
 };

 /*
  * struct lp8788_backlight_platform_data
  * @name                  : backlight driver name. (default: "lcd-backlight")
  * @initial_brightness    : initial value of backlight brightness
  * @bl_mode               : brightness control by pwm or lp8788 register
  * @dim_mode              : dimming mode selection
  * @full_scale            : full scale current setting
  * @rise_time             : brightness ramp up step time
  * @fall_time             : brightness ramp down step time
  * @pwm_pol               : pwm polarity setting when bl_mode is pwm based
  * @pwm_data              : platform specific pwm generation functions
  *                          only valid when bl_mode is pwm based
  */
 struct lp8788_backlight_platform_data {
 	char *name;
 	int initial_brightness;
 	enum lp8788_bl_ctrl_mode bl_mode;
 	enum lp8788_bl_dim_mode dim_mode;
 	enum lp8788_bl_full_scale_current full_scale;
 	enum lp8788_bl_ramp_step rise_time;
 	enum lp8788_bl_ramp_step fall_time;
 	enum lp8788_bl_pwm_polarity pwm_pol;
 	struct lp8788_bl_pwm_data pwm_data;
 };

 /*
  * struct lp8788_led_platform_data
  * @name         : led driver name. (default: "keyboard-backlight")
  * @scale        : current scale
  * @num          : current sink number
  * @iout_code    : current output value (Addr 9Ah ~ 9Bh)
  */
 struct lp8788_led_platform_data {
 	char *name;
 	enum lp8788_isink_scale scale;
 	enum lp8788_isink_number num;
 	int iout_code;
 };

 /*
  * struct lp8788_vib_platform_data
  * @name         : vibrator driver name
  * @scale        : current scale
  * @num          : current sink number
  * @iout_code    : current output value (Addr 9Ah ~ 9Bh)
  * @pwm_code     : PWM code value (Addr 9Ch ~ 9Eh)
  */
 struct lp8788_vib_platform_data {
 	char *name;
 	enum lp8788_isink_scale scale;
 	enum lp8788_isink_number num;
 	int iout_code;
 	int pwm_code;
 };

 /*
  * struct lp8788_platform_data
  * @init_func    : used for initializing registers
  *                 before mfd driver is registered
  * @buck_data    : regulator initial data for buck
  * @dldo_data    : regulator initial data for digital ldo
  * @aldo_data    : regulator initial data for analog ldo
  * @buck1_dvs    : gpio configurations for buck1 dvs
  * @buck2_dvs    : gpio configurations for buck2 dvs
  * @ldo_pin      : gpio configurations for enabling LDOs
  * @chg_pdata    : platform data for charger driver
  * @alarm_sel    : rtc alarm selection (1 or 2)
  * @bl_pdata     : configurable data for backlight driver
  * @led_pdata    : configurable data for led driver
  * @vib_pdata    : configurable data for vibrator driver
  * @adc_pdata    : iio map data for adc driver
  */
 struct lp8788_platform_data {
 	/* general system information */
 	int (*init_func) (struct lp8788 *lp);

 	/* regulators */
 	struct regulator_init_data *buck_data[LP8788_NUM_BUCKS];
 	struct regulator_init_data *dldo_data[LP8788_NUM_DLDOS];
 	struct regulator_init_data *aldo_data[LP8788_NUM_ALDOS];
 	struct lp8788_buck1_dvs *buck1_dvs;
 	struct lp8788_buck2_dvs *buck2_dvs;
 	struct lp8788_ldo_enable_pin *ldo_pin[EN_LDOS_MAX];

 	/* charger */
 	struct lp8788_charger_platform_data *chg_pdata;

 	/* rtc alarm */
 	enum lp8788_alarm_sel alarm_sel;

 	/* backlight */
 	struct lp8788_backlight_platform_data *bl_pdata;

 	/* current sinks */
 	struct lp8788_led_platform_data *led_pdata;
 	struct lp8788_vib_platform_data *vib_pdata;

 	/* adc iio map data */
 	struct iio_map *adc_pdata;
 };

 /*
  * struct lp8788
  * @dev          : parent device pointer
  * @regmap       : used for i2c communcation on accessing registers
  * @irqdm        : interrupt domain for handling nested interrupt
  * @irq          : pin number of IRQ_N
  * @pdata        : lp8788 platform specific data
  */
 struct lp8788 {
 	struct device *dev;
 	struct regmap *regmap;
 	struct irq_domain *irqdm;
 	int irq;
 	struct lp8788_platform_data *pdata;
 };

 int lp8788_irq_init(struct lp8788 *lp, int chip_irq);
 void lp8788_irq_exit(struct lp8788 *lp);
 int lp8788_read_byte(struct lp8788 *lp, u8 reg, u8 *data);
 int lp8788_read_multi_bytes(struct lp8788 *lp, u8 reg, u8 *data, size_t count);
 int lp8788_write_byte(struct lp8788 *lp, u8 reg, u8 data);
 int lp8788_update_bits(struct lp8788 *lp, u8 reg, u8 mask, u8 data);
 #endif
	/*
	* TI LP8788 MFD Device
	*
	* Copyright 2012 Texas Instruments
	*
	* Author: Milo(Woogyom) 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_LP8788_H__
	#define __MFD_LP8788_H__

	#include <linux/gpio.h>
	#include <linux/irqdomain.h>
	#include <linux/regmap.h>

	#define LP8788_DEV_BUCK "lp8788-buck"
	#define LP8788_DEV_DLDO "lp8788-dldo"
	#define LP8788_DEV_ALDO "lp8788-aldo"
	#define LP8788_DEV_CHARGER "lp8788-charger"
	#define LP8788_DEV_RTC "lp8788-rtc"
	#define LP8788_DEV_BACKLIGHT "lp8788-backlight"
	#define LP8788_DEV_VIBRATOR "lp8788-vibrator"
	#define LP8788_DEV_KEYLED "lp8788-keyled"
	#define LP8788_DEV_ADC "lp8788-adc"

	#define LP8788_NUM_BUCKS 4
	#define LP8788_NUM_DLDOS 12
	#define LP8788_NUM_ALDOS 10
	#define LP8788_NUM_BUCK2_DVS 2

	#define LP8788_CHG_IRQ "CHG_IRQ"
	#define LP8788_PRSW_IRQ "PRSW_IRQ"
	#define LP8788_BATT_IRQ "BATT_IRQ"
	#define LP8788_ALM_IRQ "ALARM_IRQ"

	enum lp8788_int_id {
	/* interrup register 1 : Addr 00h */
	LP8788_INT_TSDL,
	LP8788_INT_TSDH,
	LP8788_INT_UVLO,
	LP8788_INT_FLAGMON,
	LP8788_INT_PWRON_TIME,
	LP8788_INT_PWRON,
	LP8788_INT_COMP1,
	LP8788_INT_COMP2,

	/* interrupt register 2 : Addr 01h */
	LP8788_INT_CHG_INPUT_STATE,
	LP8788_INT_CHG_STATE,
	LP8788_INT_EOC,
	LP8788_INT_CHG_RESTART,
	LP8788_INT_RESTART_TIMEOUT,
	LP8788_INT_FULLCHG_TIMEOUT,
	LP8788_INT_PRECHG_TIMEOUT,

	/* interrupt register 3 : Addr 02h */
	LP8788_INT_RTC_ALARM1 = 17,
	LP8788_INT_RTC_ALARM2,
	LP8788_INT_ENTER_SYS_SUPPORT,
	LP8788_INT_EXIT_SYS_SUPPORT,
	LP8788_INT_BATT_LOW,
	LP8788_INT_NO_BATT,

	LP8788_INT_MAX = 24,
	};

	enum lp8788_dvs_sel {
	DVS_SEL_V0,
	DVS_SEL_V1,
	DVS_SEL_V2,
	DVS_SEL_V3,
	};

	enum lp8788_ext_ldo_en_id {
	EN_ALDO1,
	EN_ALDO234,
	EN_ALDO5,
	EN_ALDO7,
	EN_DLDO7,
	EN_DLDO911,
	EN_LDOS_MAX,
	};

	enum lp8788_charger_event {
	NO_CHARGER,
	CHARGER_DETECTED,
	};

	enum lp8788_bl_ctrl_mode {
	LP8788_BL_REGISTER_ONLY,
	LP8788_BL_COMB_PWM_BASED, /* PWM + I2C, changed by PWM input */
	LP8788_BL_COMB_REGISTER_BASED, /* PWM + I2C, changed by I2C */
	};

	enum lp8788_bl_dim_mode {
	LP8788_DIM_EXPONENTIAL,
	LP8788_DIM_LINEAR,
	};

	enum lp8788_bl_full_scale_current {
	LP8788_FULLSCALE_5000uA,
	LP8788_FULLSCALE_8500uA,
	LP8788_FULLSCALE_1200uA,
	LP8788_FULLSCALE_1550uA,
	LP8788_FULLSCALE_1900uA,
	LP8788_FULLSCALE_2250uA,
	LP8788_FULLSCALE_2600uA,
	LP8788_FULLSCALE_2950uA,
	};

	enum lp8788_bl_ramp_step {
	LP8788_RAMP_8us,
	LP8788_RAMP_1024us,
	LP8788_RAMP_2048us,
	LP8788_RAMP_4096us,
	LP8788_RAMP_8192us,
	LP8788_RAMP_16384us,
	LP8788_RAMP_32768us,
	LP8788_RAMP_65538us,
	};

	enum lp8788_bl_pwm_polarity {
	LP8788_PWM_ACTIVE_HIGH,
	LP8788_PWM_ACTIVE_LOW,
	};

	enum lp8788_isink_scale {
	LP8788_ISINK_SCALE_100mA,
	LP8788_ISINK_SCALE_120mA,
	};

	enum lp8788_isink_number {
	LP8788_ISINK_1,
	LP8788_ISINK_2,
	LP8788_ISINK_3,
	};

	enum lp8788_alarm_sel {
	LP8788_ALARM_1,
	LP8788_ALARM_2,
	LP8788_ALARM_MAX,
	};

	enum lp8788_adc_id {
	LPADC_VBATT_5P5,
	LPADC_VIN_CHG,
	LPADC_IBATT,
	LPADC_IC_TEMP,
	LPADC_VBATT_6P0,
	LPADC_VBATT_5P0,
	LPADC_ADC1,
	LPADC_ADC2,
	LPADC_VDD,
	LPADC_VCOIN,
	LPADC_VDD_LDO,
	LPADC_ADC3,
	LPADC_ADC4,
	LPADC_MAX,
	};

	struct lp8788;

	/*
	* lp8788_buck1_dvs
	* @gpio : gpio pin number for dvs control
	* @vsel : dvs selector for buck v1 register
	*/
	struct lp8788_buck1_dvs {
	int gpio;
	enum lp8788_dvs_sel vsel;
	};

	/*
	* lp8788_buck2_dvs
	* @gpio : two gpio pin numbers are used for dvs
	* @vsel : dvs selector for buck v2 register
	*/
	struct lp8788_buck2_dvs {
	int gpio[LP8788_NUM_BUCK2_DVS];
	enum lp8788_dvs_sel vsel;
	};

	/*
	* struct lp8788_ldo_enable_pin
	*
	* Basically, all LDOs are enabled through the I2C commands.
	* But ALDO 1 ~ 5, 7, DLDO 7, 9, 11 can be enabled by external gpio pins.
	*
	* @gpio : gpio number which is used for enabling ldos
	* @init_state : initial gpio state (ex. GPIOF_OUT_INIT_LOW)
	*/
	struct lp8788_ldo_enable_pin {
	int gpio;
	int init_state;
	};

	/*
	* struct lp8788_chg_param
	* @addr : charging control register address (range : 0x11 ~ 0x1C)
	* @val : charging parameter value
	*/
	struct lp8788_chg_param {
	u8 addr;
	u8 val;
	};

	/*
	* struct lp8788_charger_platform_data
	* @adc_vbatt : adc channel name for battery voltage
	* @adc_batt_temp : adc channel name for battery temperature
	* @max_vbatt_mv : used for calculating battery capacity
	* @chg_params : initial charging parameters
	* @num_chg_params : numbers of charging parameters
	* @charger_event : the charger event can be reported to the platform side
	*/
	struct lp8788_charger_platform_data {
	const char *adc_vbatt;
	const char *adc_batt_temp;
	unsigned int max_vbatt_mv;
	struct lp8788_chg_param *chg_params;
	int num_chg_params;
	void (charger_event) (struct lp8788 lp,
	enum lp8788_charger_event event);
	};

	/*
	* struct lp8788_bl_pwm_data
	* @pwm_set_intensity : set duty of pwm
	* @pwm_get_intensity : get current duty of pwm
	*/
	struct lp8788_bl_pwm_data {
	void (*pwm_set_intensity) (int brightness, int max_brightness);
	int (*pwm_get_intensity) (int max_brightness);
	};

	/*
	* struct lp8788_backlight_platform_data
	* @name : backlight driver name. (default: "lcd-backlight")
	* @initial_brightness : initial value of backlight brightness
	* @bl_mode : brightness control by pwm or lp8788 register
	* @dim_mode : dimming mode selection
	* @full_scale : full scale current setting
	* @rise_time : brightness ramp up step time
	* @fall_time : brightness ramp down step time
	* @pwm_pol : pwm polarity setting when bl_mode is pwm based
	* @pwm_data : platform specific pwm generation functions
	* only valid when bl_mode is pwm based
	*/
	struct lp8788_backlight_platform_data {
	char *name;
	int initial_brightness;
	enum lp8788_bl_ctrl_mode bl_mode;
	enum lp8788_bl_dim_mode dim_mode;
	enum lp8788_bl_full_scale_current full_scale;
	enum lp8788_bl_ramp_step rise_time;
	enum lp8788_bl_ramp_step fall_time;
	enum lp8788_bl_pwm_polarity pwm_pol;
	struct lp8788_bl_pwm_data pwm_data;
	};

	/*
	* struct lp8788_led_platform_data
	* @name : led driver name. (default: "keyboard-backlight")
	* @scale : current scale
	* @num : current sink number
	* @iout_code : current output value (Addr 9Ah ~ 9Bh)
	*/
	struct lp8788_led_platform_data {
	char *name;
	enum lp8788_isink_scale scale;
	enum lp8788_isink_number num;
	int iout_code;
	};

	/*
	* struct lp8788_vib_platform_data
	* @name : vibrator driver name
	* @scale : current scale
	* @num : current sink number
	* @iout_code : current output value (Addr 9Ah ~ 9Bh)
	* @pwm_code : PWM code value (Addr 9Ch ~ 9Eh)
	*/
	struct lp8788_vib_platform_data {
	char *name;
	enum lp8788_isink_scale scale;
	enum lp8788_isink_number num;
	int iout_code;
	int pwm_code;
	};

	/*
	* struct lp8788_platform_data
	* @init_func : used for initializing registers
	* before mfd driver is registered
	* @buck_data : regulator initial data for buck
	* @dldo_data : regulator initial data for digital ldo
	* @aldo_data : regulator initial data for analog ldo
	* @buck1_dvs : gpio configurations for buck1 dvs
	* @buck2_dvs : gpio configurations for buck2 dvs
	* @ldo_pin : gpio configurations for enabling LDOs
	* @chg_pdata : platform data for charger driver
	* @alarm_sel : rtc alarm selection (1 or 2)
	* @bl_pdata : configurable data for backlight driver
	* @led_pdata : configurable data for led driver
	* @vib_pdata : configurable data for vibrator driver
	* @adc_pdata : iio map data for adc driver
	*/
	struct lp8788_platform_data {
	/* general system information */
	int (init_func) (struct lp8788 lp);

	/* regulators */
	struct regulator_init_data *buck_data[LP8788_NUM_BUCKS];
	struct regulator_init_data *dldo_data[LP8788_NUM_DLDOS];
	struct regulator_init_data *aldo_data[LP8788_NUM_ALDOS];
	struct lp8788_buck1_dvs *buck1_dvs;
	struct lp8788_buck2_dvs *buck2_dvs;
	struct lp8788_ldo_enable_pin *ldo_pin[EN_LDOS_MAX];

	/* charger */
	struct lp8788_charger_platform_data *chg_pdata;

	/* rtc alarm */
	enum lp8788_alarm_sel alarm_sel;

	/* backlight */
	struct lp8788_backlight_platform_data *bl_pdata;

	/* current sinks */
	struct lp8788_led_platform_data *led_pdata;
	struct lp8788_vib_platform_data *vib_pdata;

	/* adc iio map data */
	struct iio_map *adc_pdata;
	};

	/*
	* struct lp8788
	* @dev : parent device pointer
	* @regmap : used for i2c communcation on accessing registers
	* @irqdm : interrupt domain for handling nested interrupt
	* @irq : pin number of IRQ_N
	* @pdata : lp8788 platform specific data
	*/
	struct lp8788 {
	struct device *dev;
	struct regmap *regmap;
	struct irq_domain *irqdm;
	int irq;
	struct lp8788_platform_data *pdata;
	};

	int lp8788_irq_init(struct lp8788 *lp, int chip_irq);
	void lp8788_irq_exit(struct lp8788 *lp);
	int lp8788_read_byte(struct lp8788 lp, u8 reg, u8 data);
	int lp8788_read_multi_bytes(struct lp8788 lp, u8 reg, u8 data, size_t count);
	int lp8788_write_byte(struct lp8788 *lp, u8 reg, u8 data);
	int lp8788_update_bits(struct lp8788 *lp, u8 reg, u8 mask, u8 data);
	#endif