/*
   * 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
   * @pcut_enable:			Enable power cut feature in ab8505
   * @pcut_max_time:		Max time threshold
   * @pcut_flag_time:		Flagtime threshold
   * @pcut_max_restart:		Max number of restarts
   * @pcut_debounce_time:		Sets battery debounce time
   */
  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;
  	bool pcut_enable;
  	u8 pcut_max_time;
  	u8 pcut_flag_time;
  	u8 pcut_max_restart;
  	u8 pcut_debounce_time;
  };
  
  /**
   * 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_cap		battery capacity 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_cap;
  	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;
  	const struct abx500_res_to_temp *r_to_t_tbl;
  	int n_v_cap_tbl_elements;
  	const struct abx500_v_to_cap *v_to_cap_tbl;
  	int n_batres_tbl_elements;
  	const 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
   * @capacity_scaling    indicates whether capacity scaling is to be used
   * @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)
   * @n_chg_out_curr		number of elements in array chg_output_curr
   * @n_chg_in_curr		number of elements in array chg_input_curr
   * @chg_output_curr	charger output current level map
   * @chg_input_curr		charger input current level map
   * @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 autopower_cfg;
  	bool ac_enabled;
  	bool usb_enabled;
  	bool usb_power_path;
  	bool no_maintenance;
  	bool capacity_scaling;
  	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;
  	int n_chg_out_curr;
  	int n_chg_in_curr;
  	int *chg_output_curr;
  	int *chg_input_curr;
  	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 ab8500_bm_of_probe(struct device *dev,
  		       struct device_node *np,
  		       struct abx500_bm_data *bm);
  
  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);
  void abx500_dump_all_banks(void);
  
  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);
  	void (*dump_all_banks) (struct device *);
  };
  
  int abx500_register_ops(struct device *core_dev, struct abx500_ops *ops);
  void abx500_remove_ops(struct device *dev);
  #endif