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/*
* 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/pwm.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_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_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
* @period_ns : platform specific pwm period value. unit is nano.
Only valid when bl_mode is LP8788_BL_COMB_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 pwm_polarity pwm_pol;
unsigned int period_ns;
};
/*
* 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
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