351 lines
8.8 KiB
C
351 lines
8.8 KiB
C
/*
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* TI LP8788 MFD Device
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*
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* Copyright 2012 Texas Instruments
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*
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* Author: Milo(Woogyom) Kim <milo.kim@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#ifndef __MFD_LP8788_H__
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#define __MFD_LP8788_H__
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#include <linux/gpio.h>
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#include <linux/irqdomain.h>
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#include <linux/pwm.h>
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#include <linux/regmap.h>
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#define LP8788_DEV_BUCK "lp8788-buck"
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#define LP8788_DEV_DLDO "lp8788-dldo"
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#define LP8788_DEV_ALDO "lp8788-aldo"
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#define LP8788_DEV_CHARGER "lp8788-charger"
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#define LP8788_DEV_RTC "lp8788-rtc"
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#define LP8788_DEV_BACKLIGHT "lp8788-backlight"
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#define LP8788_DEV_VIBRATOR "lp8788-vibrator"
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#define LP8788_DEV_KEYLED "lp8788-keyled"
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#define LP8788_DEV_ADC "lp8788-adc"
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#define LP8788_NUM_BUCKS 4
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#define LP8788_NUM_DLDOS 12
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#define LP8788_NUM_ALDOS 10
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#define LP8788_NUM_BUCK2_DVS 2
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#define LP8788_CHG_IRQ "CHG_IRQ"
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#define LP8788_PRSW_IRQ "PRSW_IRQ"
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#define LP8788_BATT_IRQ "BATT_IRQ"
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#define LP8788_ALM_IRQ "ALARM_IRQ"
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enum lp8788_int_id {
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/* interrup register 1 : Addr 00h */
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LP8788_INT_TSDL,
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LP8788_INT_TSDH,
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LP8788_INT_UVLO,
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LP8788_INT_FLAGMON,
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LP8788_INT_PWRON_TIME,
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LP8788_INT_PWRON,
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LP8788_INT_COMP1,
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LP8788_INT_COMP2,
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/* interrupt register 2 : Addr 01h */
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LP8788_INT_CHG_INPUT_STATE,
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LP8788_INT_CHG_STATE,
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LP8788_INT_EOC,
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LP8788_INT_CHG_RESTART,
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LP8788_INT_RESTART_TIMEOUT,
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LP8788_INT_FULLCHG_TIMEOUT,
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LP8788_INT_PRECHG_TIMEOUT,
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/* interrupt register 3 : Addr 02h */
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LP8788_INT_RTC_ALARM1 = 17,
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LP8788_INT_RTC_ALARM2,
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LP8788_INT_ENTER_SYS_SUPPORT,
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LP8788_INT_EXIT_SYS_SUPPORT,
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LP8788_INT_BATT_LOW,
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LP8788_INT_NO_BATT,
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LP8788_INT_MAX = 24,
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};
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enum lp8788_dvs_sel {
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DVS_SEL_V0,
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DVS_SEL_V1,
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DVS_SEL_V2,
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DVS_SEL_V3,
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};
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enum lp8788_ext_ldo_en_id {
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EN_ALDO1,
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EN_ALDO234,
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EN_ALDO5,
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EN_ALDO7,
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EN_DLDO7,
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EN_DLDO911,
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EN_LDOS_MAX,
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};
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enum lp8788_charger_event {
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NO_CHARGER,
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CHARGER_DETECTED,
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};
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enum lp8788_bl_ctrl_mode {
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LP8788_BL_REGISTER_ONLY,
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LP8788_BL_COMB_PWM_BASED, /* PWM + I2C, changed by PWM input */
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LP8788_BL_COMB_REGISTER_BASED, /* PWM + I2C, changed by I2C */
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};
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enum lp8788_bl_dim_mode {
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LP8788_DIM_EXPONENTIAL,
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LP8788_DIM_LINEAR,
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};
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enum lp8788_bl_full_scale_current {
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LP8788_FULLSCALE_5000uA,
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LP8788_FULLSCALE_8500uA,
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LP8788_FULLSCALE_1200uA,
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LP8788_FULLSCALE_1550uA,
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LP8788_FULLSCALE_1900uA,
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LP8788_FULLSCALE_2250uA,
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LP8788_FULLSCALE_2600uA,
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LP8788_FULLSCALE_2950uA,
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};
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enum lp8788_bl_ramp_step {
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LP8788_RAMP_8us,
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LP8788_RAMP_1024us,
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LP8788_RAMP_2048us,
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LP8788_RAMP_4096us,
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LP8788_RAMP_8192us,
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LP8788_RAMP_16384us,
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LP8788_RAMP_32768us,
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LP8788_RAMP_65538us,
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};
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enum lp8788_isink_scale {
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LP8788_ISINK_SCALE_100mA,
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LP8788_ISINK_SCALE_120mA,
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};
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enum lp8788_isink_number {
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LP8788_ISINK_1,
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LP8788_ISINK_2,
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LP8788_ISINK_3,
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};
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enum lp8788_alarm_sel {
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LP8788_ALARM_1,
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LP8788_ALARM_2,
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LP8788_ALARM_MAX,
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};
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enum lp8788_adc_id {
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LPADC_VBATT_5P5,
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LPADC_VIN_CHG,
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LPADC_IBATT,
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LPADC_IC_TEMP,
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LPADC_VBATT_6P0,
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LPADC_VBATT_5P0,
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LPADC_ADC1,
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LPADC_ADC2,
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LPADC_VDD,
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LPADC_VCOIN,
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LPADC_VDD_LDO,
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LPADC_ADC3,
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LPADC_ADC4,
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LPADC_MAX,
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};
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struct lp8788;
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/*
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* lp8788_buck1_dvs
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* @gpio : gpio pin number for dvs control
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* @vsel : dvs selector for buck v1 register
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*/
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struct lp8788_buck1_dvs {
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int gpio;
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enum lp8788_dvs_sel vsel;
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};
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/*
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* lp8788_buck2_dvs
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* @gpio : two gpio pin numbers are used for dvs
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* @vsel : dvs selector for buck v2 register
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*/
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struct lp8788_buck2_dvs {
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int gpio[LP8788_NUM_BUCK2_DVS];
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enum lp8788_dvs_sel vsel;
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};
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/*
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* struct lp8788_ldo_enable_pin
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*
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* Basically, all LDOs are enabled through the I2C commands.
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* But ALDO 1 ~ 5, 7, DLDO 7, 9, 11 can be enabled by external gpio pins.
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*
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* @gpio : gpio number which is used for enabling ldos
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* @init_state : initial gpio state (ex. GPIOF_OUT_INIT_LOW)
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*/
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struct lp8788_ldo_enable_pin {
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int gpio;
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int init_state;
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};
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/*
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* struct lp8788_chg_param
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* @addr : charging control register address (range : 0x11 ~ 0x1C)
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* @val : charging parameter value
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*/
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struct lp8788_chg_param {
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u8 addr;
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u8 val;
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};
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/*
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* struct lp8788_charger_platform_data
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* @adc_vbatt : adc channel name for battery voltage
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* @adc_batt_temp : adc channel name for battery temperature
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* @max_vbatt_mv : used for calculating battery capacity
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* @chg_params : initial charging parameters
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* @num_chg_params : numbers of charging parameters
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* @charger_event : the charger event can be reported to the platform side
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*/
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struct lp8788_charger_platform_data {
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const char *adc_vbatt;
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const char *adc_batt_temp;
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unsigned int max_vbatt_mv;
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struct lp8788_chg_param *chg_params;
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int num_chg_params;
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void (*charger_event) (struct lp8788 *lp,
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enum lp8788_charger_event event);
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};
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/*
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* struct lp8788_backlight_platform_data
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* @name : backlight driver name. (default: "lcd-backlight")
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* @initial_brightness : initial value of backlight brightness
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* @bl_mode : brightness control by pwm or lp8788 register
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* @dim_mode : dimming mode selection
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* @full_scale : full scale current setting
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* @rise_time : brightness ramp up step time
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* @fall_time : brightness ramp down step time
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* @pwm_pol : pwm polarity setting when bl_mode is pwm based
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* @period_ns : platform specific pwm period value. unit is nano.
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Only valid when bl_mode is LP8788_BL_COMB_PWM_BASED
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*/
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struct lp8788_backlight_platform_data {
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char *name;
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int initial_brightness;
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enum lp8788_bl_ctrl_mode bl_mode;
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enum lp8788_bl_dim_mode dim_mode;
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enum lp8788_bl_full_scale_current full_scale;
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enum lp8788_bl_ramp_step rise_time;
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enum lp8788_bl_ramp_step fall_time;
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enum pwm_polarity pwm_pol;
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unsigned int period_ns;
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};
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/*
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* struct lp8788_led_platform_data
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* @name : led driver name. (default: "keyboard-backlight")
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* @scale : current scale
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* @num : current sink number
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* @iout_code : current output value (Addr 9Ah ~ 9Bh)
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*/
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struct lp8788_led_platform_data {
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char *name;
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enum lp8788_isink_scale scale;
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enum lp8788_isink_number num;
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int iout_code;
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};
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/*
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* struct lp8788_vib_platform_data
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* @name : vibrator driver name
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* @scale : current scale
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* @num : current sink number
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* @iout_code : current output value (Addr 9Ah ~ 9Bh)
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* @pwm_code : PWM code value (Addr 9Ch ~ 9Eh)
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*/
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struct lp8788_vib_platform_data {
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char *name;
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enum lp8788_isink_scale scale;
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enum lp8788_isink_number num;
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int iout_code;
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int pwm_code;
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};
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/*
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* struct lp8788_platform_data
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* @init_func : used for initializing registers
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* before mfd driver is registered
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* @buck_data : regulator initial data for buck
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* @dldo_data : regulator initial data for digital ldo
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* @aldo_data : regulator initial data for analog ldo
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* @buck1_dvs : gpio configurations for buck1 dvs
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* @buck2_dvs : gpio configurations for buck2 dvs
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* @ldo_pin : gpio configurations for enabling LDOs
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* @chg_pdata : platform data for charger driver
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* @alarm_sel : rtc alarm selection (1 or 2)
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* @bl_pdata : configurable data for backlight driver
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* @led_pdata : configurable data for led driver
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* @vib_pdata : configurable data for vibrator driver
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* @adc_pdata : iio map data for adc driver
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*/
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struct lp8788_platform_data {
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/* general system information */
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int (*init_func) (struct lp8788 *lp);
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/* regulators */
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struct regulator_init_data *buck_data[LP8788_NUM_BUCKS];
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struct regulator_init_data *dldo_data[LP8788_NUM_DLDOS];
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struct regulator_init_data *aldo_data[LP8788_NUM_ALDOS];
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struct lp8788_buck1_dvs *buck1_dvs;
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struct lp8788_buck2_dvs *buck2_dvs;
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struct lp8788_ldo_enable_pin *ldo_pin[EN_LDOS_MAX];
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/* charger */
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struct lp8788_charger_platform_data *chg_pdata;
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/* rtc alarm */
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enum lp8788_alarm_sel alarm_sel;
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/* backlight */
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struct lp8788_backlight_platform_data *bl_pdata;
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/* current sinks */
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struct lp8788_led_platform_data *led_pdata;
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struct lp8788_vib_platform_data *vib_pdata;
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/* adc iio map data */
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struct iio_map *adc_pdata;
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};
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/*
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* struct lp8788
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* @dev : parent device pointer
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* @regmap : used for i2c communcation on accessing registers
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* @irqdm : interrupt domain for handling nested interrupt
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* @irq : pin number of IRQ_N
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* @pdata : lp8788 platform specific data
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*/
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struct lp8788 {
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struct device *dev;
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struct regmap *regmap;
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struct irq_domain *irqdm;
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int irq;
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struct lp8788_platform_data *pdata;
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};
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int lp8788_irq_init(struct lp8788 *lp, int chip_irq);
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void lp8788_irq_exit(struct lp8788 *lp);
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int lp8788_read_byte(struct lp8788 *lp, u8 reg, u8 *data);
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int lp8788_read_multi_bytes(struct lp8788 *lp, u8 reg, u8 *data, size_t count);
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int lp8788_write_byte(struct lp8788 *lp, u8 reg, u8 data);
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int lp8788_update_bits(struct lp8788 *lp, u8 reg, u8 mask, u8 data);
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#endif
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