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/*
* Copyright (C) 2007-2009 ST-Ericsson AB
* License terms: GNU General Public License (GPL) version 2
*
* ABX500 core access functions.
* The abx500 interface is used for the Analog Baseband chips.
*
* Author: Mattias Wallin <mattias.wallin@stericsson.com>
* Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
* Author: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
* Author: Rickard Andersson <rickard.andersson@stericsson.com>
*/
#include <linux/regulator/machine.h>
struct device;
#ifndef MFD_ABX500_H
#define MFD_ABX500_H
/**
* struct abx500_init_setting
* Initial value of the registers for driver to use during setup.
*/
struct abx500_init_settings {
u8 bank;
u8 reg;
u8 setting;
};
/* Battery driver related data */
/*
* ADC for the battery thermistor.
* When using the ABx500_ADC_THERM_BATCTRL the battery ID resistor is combined
* with a NTC resistor to both identify the battery and to measure its
* temperature. Different phone manufactures uses different techniques to both
* identify the battery and to read its temperature.
*/
enum abx500_adc_therm {
ABx500_ADC_THERM_BATCTRL,
ABx500_ADC_THERM_BATTEMP,
};
/**
* struct abx500_res_to_temp - defines one point in a temp to res curve. To
* be used in battery packs that combines the identification resistor with a
* NTC resistor.
* @temp: battery pack temperature in Celcius
* @resist: NTC resistor net total resistance
*/
struct abx500_res_to_temp {
int temp;
int resist;
};
/**
* struct abx500_v_to_cap - Table for translating voltage to capacity
* @voltage: Voltage in mV
* @capacity: Capacity in percent
*/
struct abx500_v_to_cap {
int voltage;
int capacity;
};
/* Forward declaration */
struct abx500_fg;
/**
* struct abx500_fg_parameters - Fuel gauge algorithm parameters, in seconds
* if not specified
* @recovery_sleep_timer: Time between measurements while recovering
* @recovery_total_time: Total recovery time
* @init_timer: Measurement interval during startup
* @init_discard_time: Time we discard voltage measurement at startup
* @init_total_time: Total init time during startup
* @high_curr_time: Time current has to be high to go to recovery
* @accu_charging: FG accumulation time while charging
* @accu_high_curr: FG accumulation time in high current mode
* @high_curr_threshold: High current threshold, in mA
* @lowbat_threshold: Low battery threshold, in mV
* @overbat_threshold: Over battery threshold, in mV
* @battok_falling_th_sel0 Threshold in mV for battOk signal sel0
* Resolution in 50 mV step.
* @battok_raising_th_sel1 Threshold in mV for battOk signal sel1
* Resolution in 50 mV step.
* @user_cap_limit Capacity reported from user must be within this
* limit to be considered as sane, in percentage
* points.
* @maint_thres This is the threshold where we stop reporting
* battery full while in maintenance, in per cent
*/
struct abx500_fg_parameters {
int recovery_sleep_timer;
int recovery_total_time;
int init_timer;
int init_discard_time;
int init_total_time;
int high_curr_time;
int accu_charging;
int accu_high_curr;
int high_curr_threshold;
int lowbat_threshold;
int overbat_threshold;
int battok_falling_th_sel0;
int battok_raising_th_sel1;
int user_cap_limit;
int maint_thres;
};
/**
* struct abx500_charger_maximization - struct used by the board config.
* @use_maxi: Enable maximization for this battery type
* @maxi_chg_curr: Maximum charger current allowed
* @maxi_wait_cycles: cycles to wait before setting charger current
* @charger_curr_step delta between two charger current settings (mA)
*/
struct abx500_maxim_parameters {
bool ena_maxi;
int chg_curr;
int wait_cycles;
int charger_curr_step;
};
/**
* struct abx500_battery_type - different batteries supported
* @name: battery technology
* @resis_high: battery upper resistance limit
* @resis_low: battery lower resistance limit
* @charge_full_design: Maximum battery capacity in mAh
* @nominal_voltage: Nominal voltage of the battery in mV
* @termination_vol: max voltage upto which battery can be charged
* @termination_curr battery charging termination current in mA
* @recharge_vol battery voltage limit that will trigger a new
* full charging cycle in the case where maintenan-
* -ce charging has been disabled
* @normal_cur_lvl: charger current in normal state in mA
* @normal_vol_lvl: charger voltage in normal state in mV
* @maint_a_cur_lvl: charger current in maintenance A state in mA
* @maint_a_vol_lvl: charger voltage in maintenance A state in mV
* @maint_a_chg_timer_h: charge time in maintenance A state
* @maint_b_cur_lvl: charger current in maintenance B state in mA
* @maint_b_vol_lvl: charger voltage in maintenance B state in mV
* @maint_b_chg_timer_h: charge time in maintenance B state
* @low_high_cur_lvl: charger current in temp low/high state in mA
* @low_high_vol_lvl: charger voltage in temp low/high state in mV'
* @battery_resistance: battery inner resistance in mOhm.
* @n_r_t_tbl_elements: number of elements in r_to_t_tbl
* @r_to_t_tbl: table containing resistance to temp points
* @n_v_cap_tbl_elements: number of elements in v_to_cap_tbl
* @v_to_cap_tbl: Voltage to capacity (in %) table
* @n_batres_tbl_elements number of elements in the batres_tbl
* @batres_tbl battery internal resistance vs temperature table
*/
struct abx500_battery_type {
int name;
int resis_high;
int resis_low;
int charge_full_design;
int nominal_voltage;
int termination_vol;
int termination_curr;
int recharge_vol;
int normal_cur_lvl;
int normal_vol_lvl;
int maint_a_cur_lvl;
int maint_a_vol_lvl;
int maint_a_chg_timer_h;
int maint_b_cur_lvl;
int maint_b_vol_lvl;
int maint_b_chg_timer_h;
int low_high_cur_lvl;
int low_high_vol_lvl;
int battery_resistance;
int n_temp_tbl_elements;
struct abx500_res_to_temp *r_to_t_tbl;
int n_v_cap_tbl_elements;
struct abx500_v_to_cap *v_to_cap_tbl;
int n_batres_tbl_elements;
struct batres_vs_temp *batres_tbl;
};
/**
* struct abx500_bm_capacity_levels - abx500 capacity level data
* @critical: critical capacity level in percent
* @low: low capacity level in percent
* @normal: normal capacity level in percent
* @high: high capacity level in percent
* @full: full capacity level in percent
*/
struct abx500_bm_capacity_levels {
int critical;
int low;
int normal;
int high;
int full;
};
/**
* struct abx500_bm_charger_parameters - Charger specific parameters
* @usb_volt_max: maximum allowed USB charger voltage in mV
* @usb_curr_max: maximum allowed USB charger current in mA
* @ac_volt_max: maximum allowed AC charger voltage in mV
* @ac_curr_max: maximum allowed AC charger current in mA
*/
struct abx500_bm_charger_parameters {
int usb_volt_max;
int usb_curr_max;
int ac_volt_max;
int ac_curr_max;
};
/**
* struct abx500_bm_data - abx500 battery management data
* @temp_under under this temp, charging is stopped
* @temp_low between this temp and temp_under charging is reduced
* @temp_high between this temp and temp_over charging is reduced
* @temp_over over this temp, charging is stopped
* @temp_now present battery temperature
* @temp_interval_chg temperature measurement interval in s when charging
* @temp_interval_nochg temperature measurement interval in s when not charging
* @main_safety_tmr_h safety timer for main charger
* @usb_safety_tmr_h safety timer for usb charger
* @bkup_bat_v voltage which we charge the backup battery with
* @bkup_bat_i current which we charge the backup battery with
* @no_maintenance indicates that maintenance charging is disabled
* @abx500_adc_therm placement of thermistor, batctrl or battemp adc
* @chg_unknown_bat flag to enable charging of unknown batteries
* @enable_overshoot flag to enable VBAT overshoot control
* @auto_trig flag to enable auto adc trigger
* @fg_res resistance of FG resistor in 0.1mOhm
* @n_btypes number of elements in array bat_type
* @batt_id index of the identified battery in array bat_type
* @interval_charging charge alg cycle period time when charging (sec)
* @interval_not_charging charge alg cycle period time when not charging (sec)
* @temp_hysteresis temperature hysteresis
* @gnd_lift_resistance Battery ground to phone ground resistance (mOhm)
* @maxi: maximization parameters
* @cap_levels capacity in percent for the different capacity levels
* @bat_type table of supported battery types
* @chg_params charger parameters
* @fg_params fuel gauge parameters
*/
struct abx500_bm_data {
int temp_under;
int temp_low;
int temp_high;
int temp_over;
int temp_now;
int temp_interval_chg;
int temp_interval_nochg;
int main_safety_tmr_h;
int usb_safety_tmr_h;
int bkup_bat_v;
int bkup_bat_i;
bool no_maintenance;
bool chg_unknown_bat;
bool enable_overshoot;
bool auto_trig;
enum abx500_adc_therm adc_therm;
int fg_res;
int n_btypes;
int batt_id;
int interval_charging;
int interval_not_charging;
int temp_hysteresis;
int gnd_lift_resistance;
const struct abx500_maxim_parameters *maxi;
const struct abx500_bm_capacity_levels *cap_levels;
struct abx500_battery_type *bat_type;
const struct abx500_bm_charger_parameters *chg_params;
const struct abx500_fg_parameters *fg_params;
};
enum {
NTC_EXTERNAL = 0,
NTC_INTERNAL,
};
int bmdevs_of_probe(struct device *dev,
struct device_node *np,
struct abx500_bm_data **battery);
int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
u8 value);
int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg,
u8 *value);
int abx500_get_register_page_interruptible(struct device *dev, u8 bank,
u8 first_reg, u8 *regvals, u8 numregs);
int abx500_set_register_page_interruptible(struct device *dev, u8 bank,
u8 first_reg, u8 *regvals, u8 numregs);
/**
* abx500_mask_and_set_register_inerruptible() - Modifies selected bits of a
* target register
*
* @dev: The AB sub device.
* @bank: The i2c bank number.
* @bitmask: The bit mask to use.
* @bitvalues: The new bit values.
*
* Updates the value of an AB register:
* value -> ((value & ~bitmask) | (bitvalues & bitmask))
*/
int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank,
u8 reg, u8 bitmask, u8 bitvalues);
int abx500_get_chip_id(struct device *dev);
int abx500_event_registers_startup_state_get(struct device *dev, u8 *event);
int abx500_startup_irq_enabled(struct device *dev, unsigned int irq);
struct abx500_ops {
int (*get_chip_id) (struct device *);
int (*get_register) (struct device *, u8, u8, u8 *);
int (*set_register) (struct device *, u8, u8, u8);
int (*get_register_page) (struct device *, u8, u8, u8 *, u8);
int (*set_register_page) (struct device *, u8, u8, u8 *, u8);
int (*mask_and_set_register) (struct device *, u8, u8, u8, u8);
int (*event_registers_startup_state_get) (struct device *, u8 *);
int (*startup_irq_enabled) (struct device *, unsigned int);
};
int abx500_register_ops(struct device *core_dev, struct abx500_ops *ops);
void abx500_remove_ops(struct device *dev);
#endif
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