include/linux/mfd/abx500.h

   1 /*
   2  * Copyright (C) 2007-2009 ST-Ericsson AB
   3  * License terms: GNU General Public License (GPL) version 2
   4  *
   5  * ABX500 core access functions.
   6  * The abx500 interface is used for the Analog Baseband chips.
   7  *
   8  * Author: Mattias Wallin <mattias.wallin@stericsson.com>
   9  * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
  10  * Author: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
  11  * Author: Rickard Andersson <rickard.andersson@stericsson.com>
  12  */
  13
  14 #include <linux/regulator/machine.h>
  15
  16 struct device;
  17
  18 #ifndef MFD_ABX500_H
  19 #define MFD_ABX500_H
  20
  21 /**
  22  * struct abx500_init_setting
  23  * Initial value of the registers for driver to use during setup.
  24  */
  25 struct abx500_init_settings {
  26         u8 bank;
  27         u8 reg;
  28         u8 setting;
  29 };
  30
  31 /* Battery driver related data */
  32 /*
  33  * ADC for the battery thermistor.
  34  * When using the ABx500_ADC_THERM_BATCTRL the battery ID resistor is combined
  35  * with a NTC resistor to both identify the battery and to measure its
  36  * temperature. Different phone manufactures uses different techniques to both
  37  * identify the battery and to read its temperature.
  38  */
  39 enum abx500_adc_therm {
  40         ABx500_ADC_THERM_BATCTRL,
  41         ABx500_ADC_THERM_BATTEMP,
  42 };
  43
  44 /**
  45  * struct abx500_res_to_temp - defines one point in a temp to res curve. To
  46  * be used in battery packs that combines the identification resistor with a
  47  * NTC resistor.
  48  * @temp:                       battery pack temperature in Celcius
  49  * @resist:                     NTC resistor net total resistance
  50  */
  51 struct abx500_res_to_temp {
  52         int temp;
  53         int resist;
  54 };
  55
  56 /**
  57  * struct abx500_v_to_cap - Table for translating voltage to capacity
  58  * @voltage:            Voltage in mV
  59  * @capacity:           Capacity in percent
  60  */
  61 struct abx500_v_to_cap {
  62         int voltage;
  63         int capacity;
  64 };
  65
  66 /* Forward declaration */
  67 struct abx500_fg;
  68
  69 /**
  70  * struct abx500_fg_parameters - Fuel gauge algorithm parameters, in seconds
  71  * if not specified
  72  * @recovery_sleep_timer:       Time between measurements while recovering
  73  * @recovery_total_time:        Total recovery time
  74  * @init_timer:                 Measurement interval during startup
  75  * @init_discard_time:          Time we discard voltage measurement at startup
  76  * @init_total_time:            Total init time during startup
  77  * @high_curr_time:             Time current has to be high to go to recovery
  78  * @accu_charging:              FG accumulation time while charging
  79  * @accu_high_curr:             FG accumulation time in high current mode
  80  * @high_curr_threshold:        High current threshold, in mA
  81  * @lowbat_threshold:           Low battery threshold, in mV
  82  * @overbat_threshold:          Over battery threshold, in mV
  83  * @battok_falling_th_sel0      Threshold in mV for battOk signal sel0
  84  *                              Resolution in 50 mV step.
  85  * @battok_raising_th_sel1      Threshold in mV for battOk signal sel1
  86  *                              Resolution in 50 mV step.
  87  * @user_cap_limit              Capacity reported from user must be within this
  88  *                              limit to be considered as sane, in percentage
  89  *                              points.
  90  * @maint_thres                 This is the threshold where we stop reporting
  91  *                              battery full while in maintenance, in per cent
  92  * @pcut_enable:                        Enable power cut feature in ab8505
  93  * @pcut_max_time:              Max time threshold
  94  * @pcut_flag_time:             Flagtime threshold
  95  * @pcut_max_restart:           Max number of restarts
  96  * @pcut_debounce_time:         Sets battery debounce time
  97  */
  98 struct abx500_fg_parameters {
  99         int recovery_sleep_timer;
 100         int recovery_total_time;
 101         int init_timer;
 102         int init_discard_time;
 103         int init_total_time;
 104         int high_curr_time;
 105         int accu_charging;
 106         int accu_high_curr;
 107         int high_curr_threshold;
 108         int lowbat_threshold;
 109         int overbat_threshold;
 110         int battok_falling_th_sel0;
 111         int battok_raising_th_sel1;
 112         int user_cap_limit;
 113         int maint_thres;
 114         bool pcut_enable;
 115         u8 pcut_max_time;
 116         u8 pcut_flag_time;
 117         u8 pcut_max_restart;
 118         u8 pcut_debounce_time;
 119 };
 120
 121 /**
 122  * struct abx500_charger_maximization - struct used by the board config.
 123  * @use_maxi:           Enable maximization for this battery type
 124  * @maxi_chg_curr:      Maximum charger current allowed
 125  * @maxi_wait_cycles:   cycles to wait before setting charger current
 126  * @charger_curr_step   delta between two charger current settings (mA)
 127  */
 128 struct abx500_maxim_parameters {
 129         bool ena_maxi;
 130         int chg_curr;
 131         int wait_cycles;
 132         int charger_curr_step;
 133 };
 134
 135 /**
 136  * struct abx500_battery_type - different batteries supported
 137  * @name:                       battery technology
 138  * @resis_high:                 battery upper resistance limit
 139  * @resis_low:                  battery lower resistance limit
 140  * @charge_full_design:         Maximum battery capacity in mAh
 141  * @nominal_voltage:            Nominal voltage of the battery in mV
 142  * @termination_vol:            max voltage upto which battery can be charged
 143  * @termination_curr            battery charging termination current in mA
 144  * @recharge_cap                battery capacity limit that will trigger a new
 145  *                              full charging cycle in the case where maintenan-
 146  *                              -ce charging has been disabled
 147  * @normal_cur_lvl:             charger current in normal state in mA
 148  * @normal_vol_lvl:             charger voltage in normal state in mV
 149  * @maint_a_cur_lvl:            charger current in maintenance A state in mA
 150  * @maint_a_vol_lvl:            charger voltage in maintenance A state in mV
 151  * @maint_a_chg_timer_h:        charge time in maintenance A state
 152  * @maint_b_cur_lvl:            charger current in maintenance B state in mA
 153  * @maint_b_vol_lvl:            charger voltage in maintenance B state in mV
 154  * @maint_b_chg_timer_h:        charge time in maintenance B state
 155  * @low_high_cur_lvl:           charger current in temp low/high state in mA
 156  * @low_high_vol_lvl:           charger voltage in temp low/high state in mV'
 157  * @battery_resistance:         battery inner resistance in mOhm.
 158  * @n_r_t_tbl_elements:         number of elements in r_to_t_tbl
 159  * @r_to_t_tbl:                 table containing resistance to temp points
 160  * @n_v_cap_tbl_elements:       number of elements in v_to_cap_tbl
 161  * @v_to_cap_tbl:               Voltage to capacity (in %) table
 162  * @n_batres_tbl_elements       number of elements in the batres_tbl
 163  * @batres_tbl                  battery internal resistance vs temperature table
 164  */
 165 struct abx500_battery_type {
 166         int name;
 167         int resis_high;
 168         int resis_low;
 169         int charge_full_design;
 170         int nominal_voltage;
 171         int termination_vol;
 172         int termination_curr;
 173         int recharge_cap;
 174         int normal_cur_lvl;
 175         int normal_vol_lvl;
 176         int maint_a_cur_lvl;
 177         int maint_a_vol_lvl;
 178         int maint_a_chg_timer_h;
 179         int maint_b_cur_lvl;
 180         int maint_b_vol_lvl;
 181         int maint_b_chg_timer_h;
 182         int low_high_cur_lvl;
 183         int low_high_vol_lvl;
 184         int battery_resistance;
 185         int n_temp_tbl_elements;
 186         const struct abx500_res_to_temp *r_to_t_tbl;
 187         int n_v_cap_tbl_elements;
 188         const struct abx500_v_to_cap *v_to_cap_tbl;
 189         int n_batres_tbl_elements;
 190         const struct batres_vs_temp *batres_tbl;
 191 };
 192
 193 /**
 194  * struct abx500_bm_capacity_levels - abx500 capacity level data
 195  * @critical:           critical capacity level in percent
 196  * @low:                low capacity level in percent
 197  * @normal:             normal capacity level in percent
 198  * @high:               high capacity level in percent
 199  * @full:               full capacity level in percent
 200  */
 201 struct abx500_bm_capacity_levels {
 202         int critical;
 203         int low;
 204         int normal;
 205         int high;
 206         int full;
 207 };
 208
 209 /**
 210  * struct abx500_bm_charger_parameters - Charger specific parameters
 211  * @usb_volt_max:       maximum allowed USB charger voltage in mV
 212  * @usb_curr_max:       maximum allowed USB charger current in mA
 213  * @ac_volt_max:        maximum allowed AC charger voltage in mV
 214  * @ac_curr_max:        maximum allowed AC charger current in mA
 215  */
 216 struct abx500_bm_charger_parameters {
 217         int usb_volt_max;
 218         int usb_curr_max;
 219         int ac_volt_max;
 220         int ac_curr_max;
 221 };
 222
 223 /**
 224  * struct abx500_bm_data - abx500 battery management data
 225  * @temp_under          under this temp, charging is stopped
 226  * @temp_low            between this temp and temp_under charging is reduced
 227  * @temp_high           between this temp and temp_over charging is reduced
 228  * @temp_over           over this temp, charging is stopped
 229  * @temp_now            present battery temperature
 230  * @temp_interval_chg   temperature measurement interval in s when charging
 231  * @temp_interval_nochg temperature measurement interval in s when not charging
 232  * @main_safety_tmr_h   safety timer for main charger
 233  * @usb_safety_tmr_h    safety timer for usb charger
 234  * @bkup_bat_v          voltage which we charge the backup battery with
 235  * @bkup_bat_i          current which we charge the backup battery with
 236  * @no_maintenance      indicates that maintenance charging is disabled
 237  * @capacity_scaling    indicates whether capacity scaling is to be used
 238  * @abx500_adc_therm    placement of thermistor, batctrl or battemp adc
 239  * @chg_unknown_bat     flag to enable charging of unknown batteries
 240  * @enable_overshoot    flag to enable VBAT overshoot control
 241  * @auto_trig           flag to enable auto adc trigger
 242  * @fg_res              resistance of FG resistor in 0.1mOhm
 243  * @n_btypes            number of elements in array bat_type
 244  * @batt_id             index of the identified battery in array bat_type
 245  * @interval_charging   charge alg cycle period time when charging (sec)
 246  * @interval_not_charging charge alg cycle period time when not charging (sec)
 247  * @temp_hysteresis     temperature hysteresis
 248  * @gnd_lift_resistance Battery ground to phone ground resistance (mOhm)
 249  * @n_chg_out_curr              number of elements in array chg_output_curr
 250  * @n_chg_in_curr               number of elements in array chg_input_curr
 251  * @chg_output_curr     charger output current level map
 252  * @chg_input_curr              charger input current level map
 253  * @maxi                maximization parameters
 254  * @cap_levels          capacity in percent for the different capacity levels
 255  * @bat_type            table of supported battery types
 256  * @chg_params          charger parameters
 257  * @fg_params           fuel gauge parameters
 258  */
 259 struct abx500_bm_data {
 260         int temp_under;
 261         int temp_low;
 262         int temp_high;
 263         int temp_over;
 264         int temp_now;
 265         int temp_interval_chg;
 266         int temp_interval_nochg;
 267         int main_safety_tmr_h;
 268         int usb_safety_tmr_h;
 269         int bkup_bat_v;
 270         int bkup_bat_i;
 271         bool autopower_cfg;
 272         bool ac_enabled;
 273         bool usb_enabled;
 274         bool usb_power_path;
 275         bool no_maintenance;
 276         bool capacity_scaling;
 277         bool chg_unknown_bat;
 278         bool enable_overshoot;
 279         bool auto_trig;
 280         enum abx500_adc_therm adc_therm;
 281         int fg_res;
 282         int n_btypes;
 283         int batt_id;
 284         int interval_charging;
 285         int interval_not_charging;
 286         int temp_hysteresis;
 287         int gnd_lift_resistance;
 288         int n_chg_out_curr;
 289         int n_chg_in_curr;
 290         int *chg_output_curr;
 291         int *chg_input_curr;
 292         const struct abx500_maxim_parameters *maxi;
 293         const struct abx500_bm_capacity_levels *cap_levels;
 294         struct abx500_battery_type *bat_type;
 295         const struct abx500_bm_charger_parameters *chg_params;
 296         const struct abx500_fg_parameters *fg_params;
 297 };
 298
 299 enum {
 300         NTC_EXTERNAL = 0,
 301         NTC_INTERNAL,
 302 };
 303
 304 int ab8500_bm_of_probe(struct device *dev,
 305                        struct device_node *np,
 306                        struct abx500_bm_data *bm);
 307
 308 int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
 309         u8 value);
 310 int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg,
 311         u8 *value);
 312 int abx500_get_register_page_interruptible(struct device *dev, u8 bank,
 313         u8 first_reg, u8 *regvals, u8 numregs);
 314 int abx500_set_register_page_interruptible(struct device *dev, u8 bank,
 315         u8 first_reg, u8 *regvals, u8 numregs);
 316 /**
 317  * abx500_mask_and_set_register_inerruptible() - Modifies selected bits of a
 318  *      target register
 319  *
 320  * @dev: The AB sub device.
 321  * @bank: The i2c bank number.
 322  * @bitmask: The bit mask to use.
 323  * @bitvalues: The new bit values.
 324  *
 325  * Updates the value of an AB register:
 326  * value -> ((value & ~bitmask) | (bitvalues & bitmask))
 327  */
 328 int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank,
 329         u8 reg, u8 bitmask, u8 bitvalues);
 330 int abx500_get_chip_id(struct device *dev);
 331 int abx500_event_registers_startup_state_get(struct device *dev, u8 *event);
 332 int abx500_startup_irq_enabled(struct device *dev, unsigned int irq);
 333
 334 struct abx500_ops {
 335         int (*get_chip_id) (struct device *);
 336         int (*get_register) (struct device *, u8, u8, u8 *);
 337         int (*set_register) (struct device *, u8, u8, u8);
 338         int (*get_register_page) (struct device *, u8, u8, u8 *, u8);
 339         int (*set_register_page) (struct device *, u8, u8, u8 *, u8);
 340         int (*mask_and_set_register) (struct device *, u8, u8, u8, u8);
 341         int (*event_registers_startup_state_get) (struct device *, u8 *);
 342         int (*startup_irq_enabled) (struct device *, unsigned int);
 343         void (*dump_all_banks) (struct device *);
 344 };
 345
 346 int abx500_register_ops(struct device *core_dev, struct abx500_ops *ops);
 347 void abx500_remove_ops(struct device *dev);
 348 #endif