drivers/power/supply/ab8500_bmdata.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/export.h>
   3 #include <linux/power_supply.h>
   4 #include <linux/of.h>
   5
   6 #include "ab8500-bm.h"
   7
   8 /*
   9  * These are the defined batteries that uses a NTC and ID resistor placed
  10  * inside of the battery pack.
  11  * Note that the res_to_temp table must be strictly sorted by falling resistance
  12  * values to work.
  13  */
  14 const struct ab8500_res_to_temp ab8500_temp_tbl_a_thermistor[] = {
  15         {-5, 53407},
  16         { 0, 48594},
  17         { 5, 43804},
  18         {10, 39188},
  19         {15, 34870},
  20         {20, 30933},
  21         {25, 27422},
  22         {30, 24347},
  23         {35, 21694},
  24         {40, 19431},
  25         {45, 17517},
  26         {50, 15908},
  27         {55, 14561},
  28         {60, 13437},
  29         {65, 12500},
  30 };
  31 EXPORT_SYMBOL(ab8500_temp_tbl_a_thermistor);
  32
  33 const int ab8500_temp_tbl_a_size = ARRAY_SIZE(ab8500_temp_tbl_a_thermistor);
  34 EXPORT_SYMBOL(ab8500_temp_tbl_a_size);
  35
  36 const struct ab8500_res_to_temp ab8500_temp_tbl_b_thermistor[] = {
  37         {-5, 200000},
  38         { 0, 159024},
  39         { 5, 151921},
  40         {10, 144300},
  41         {15, 136424},
  42         {20, 128565},
  43         {25, 120978},
  44         {30, 113875},
  45         {35, 107397},
  46         {40, 101629},
  47         {45,  96592},
  48         {50,  92253},
  49         {55,  88569},
  50         {60,  85461},
  51         {65,  82869},
  52 };
  53 EXPORT_SYMBOL(ab8500_temp_tbl_b_thermistor);
  54
  55 const int ab8500_temp_tbl_b_size = ARRAY_SIZE(ab8500_temp_tbl_b_thermistor);
  56 EXPORT_SYMBOL(ab8500_temp_tbl_b_size);
  57
  58 static const struct ab8500_v_to_cap cap_tbl_a_thermistor[] = {
  59         {4171,  100},
  60         {4114,   95},
  61         {4009,   83},
  62         {3947,   74},
  63         {3907,   67},
  64         {3863,   59},
  65         {3830,   56},
  66         {3813,   53},
  67         {3791,   46},
  68         {3771,   33},
  69         {3754,   25},
  70         {3735,   20},
  71         {3717,   17},
  72         {3681,   13},
  73         {3664,    8},
  74         {3651,    6},
  75         {3635,    5},
  76         {3560,    3},
  77         {3408,    1},
  78         {3247,    0},
  79 };
  80
  81 static const struct ab8500_v_to_cap cap_tbl_b_thermistor[] = {
  82         {4161,  100},
  83         {4124,   98},
  84         {4044,   90},
  85         {4003,   85},
  86         {3966,   80},
  87         {3933,   75},
  88         {3888,   67},
  89         {3849,   60},
  90         {3813,   55},
  91         {3787,   47},
  92         {3772,   30},
  93         {3751,   25},
  94         {3718,   20},
  95         {3681,   16},
  96         {3660,   14},
  97         {3589,   10},
  98         {3546,    7},
  99         {3495,    4},
 100         {3404,    2},
 101         {3250,    0},
 102 };
 103
 104 static const struct ab8500_v_to_cap cap_tbl[] = {
 105         {4186,  100},
 106         {4163,   99},
 107         {4114,   95},
 108         {4068,   90},
 109         {3990,   80},
 110         {3926,   70},
 111         {3898,   65},
 112         {3866,   60},
 113         {3833,   55},
 114         {3812,   50},
 115         {3787,   40},
 116         {3768,   30},
 117         {3747,   25},
 118         {3730,   20},
 119         {3705,   15},
 120         {3699,   14},
 121         {3684,   12},
 122         {3672,    9},
 123         {3657,    7},
 124         {3638,    6},
 125         {3556,    4},
 126         {3424,    2},
 127         {3317,    1},
 128         {3094,    0},
 129 };
 130
 131 /*
 132  * Note that the res_to_temp table must be strictly sorted by falling
 133  * resistance values to work.
 134  */
 135 static const struct ab8500_res_to_temp temp_tbl[] = {
 136         {-5, 214834},
 137         { 0, 162943},
 138         { 5, 124820},
 139         {10,  96520},
 140         {15,  75306},
 141         {20,  59254},
 142         {25,  47000},
 143         {30,  37566},
 144         {35,  30245},
 145         {40,  24520},
 146         {45,  20010},
 147         {50,  16432},
 148         {55,  13576},
 149         {60,  11280},
 150         {65,   9425},
 151 };
 152
 153 /*
 154  * Note that the batres_vs_temp table must be strictly sorted by falling
 155  * temperature values to work.
 156  */
 157 static const struct batres_vs_temp temp_to_batres_tbl_thermistor[] = {
 158         { 40, 120},
 159         { 30, 135},
 160         { 20, 165},
 161         { 10, 230},
 162         { 00, 325},
 163         {-10, 445},
 164         {-20, 595},
 165 };
 166
 167 /*
 168  * Note that the batres_vs_temp table must be strictly sorted by falling
 169  * temperature values to work.
 170  */
 171 static const struct batres_vs_temp temp_to_batres_tbl_ext_thermistor[] = {
 172         { 60, 300},
 173         { 30, 300},
 174         { 20, 300},
 175         { 10, 300},
 176         { 00, 300},
 177         {-10, 300},
 178         {-20, 300},
 179 };
 180
 181 /* battery resistance table for LI ION 9100 battery */
 182 static const struct batres_vs_temp temp_to_batres_tbl_9100[] = {
 183         { 60, 180},
 184         { 30, 180},
 185         { 20, 180},
 186         { 10, 180},
 187         { 00, 180},
 188         {-10, 180},
 189         {-20, 180},
 190 };
 191
 192 static struct ab8500_battery_type bat_type_thermistor[] = {
 193         [BATTERY_UNKNOWN] = {
 194                 /* First element always represent the UNKNOWN battery */
 195                 .name = POWER_SUPPLY_TECHNOLOGY_UNKNOWN,
 196                 .resis_high = 0,
 197                 .resis_low = 0,
 198                 .battery_resistance = 300,
 199                 .charge_full_design = 612,
 200                 .nominal_voltage = 3700,
 201                 .termination_vol = 4050,
 202                 .termination_curr = 200,
 203                 .recharge_cap = 95,
 204                 .normal_cur_lvl = 400,
 205                 .normal_vol_lvl = 4100,
 206                 .maint_a_cur_lvl = 400,
 207                 .maint_a_vol_lvl = 4050,
 208                 .maint_a_chg_timer_h = 60,
 209                 .maint_b_cur_lvl = 400,
 210                 .maint_b_vol_lvl = 4000,
 211                 .maint_b_chg_timer_h = 200,
 212                 .low_high_cur_lvl = 300,
 213                 .low_high_vol_lvl = 4000,
 214                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
 215                 .r_to_t_tbl = temp_tbl,
 216                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
 217                 .v_to_cap_tbl = cap_tbl,
 218                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 219                 .batres_tbl = temp_to_batres_tbl_thermistor,
 220         },
 221         {
 222                 .name = POWER_SUPPLY_TECHNOLOGY_LIPO,
 223                 .resis_high = 53407,
 224                 .resis_low = 12500,
 225                 .battery_resistance = 300,
 226                 .charge_full_design = 900,
 227                 .nominal_voltage = 3600,
 228                 .termination_vol = 4150,
 229                 .termination_curr = 80,
 230                 .recharge_cap = 95,
 231                 .normal_cur_lvl = 700,
 232                 .normal_vol_lvl = 4200,
 233                 .maint_a_cur_lvl = 600,
 234                 .maint_a_vol_lvl = 4150,
 235                 .maint_a_chg_timer_h = 60,
 236                 .maint_b_cur_lvl = 600,
 237                 .maint_b_vol_lvl = 4100,
 238                 .maint_b_chg_timer_h = 200,
 239                 .low_high_cur_lvl = 300,
 240                 .low_high_vol_lvl = 4000,
 241                 .n_temp_tbl_elements = ARRAY_SIZE(ab8500_temp_tbl_a_thermistor),
 242                 .r_to_t_tbl = ab8500_temp_tbl_a_thermistor,
 243                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_a_thermistor),
 244                 .v_to_cap_tbl = cap_tbl_a_thermistor,
 245                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 246                 .batres_tbl = temp_to_batres_tbl_thermistor,
 247
 248         },
 249         {
 250                 .name = POWER_SUPPLY_TECHNOLOGY_LIPO,
 251                 .resis_high = 200000,
 252                 .resis_low = 82869,
 253                 .battery_resistance = 300,
 254                 .charge_full_design = 900,
 255                 .nominal_voltage = 3600,
 256                 .termination_vol = 4150,
 257                 .termination_curr = 80,
 258                 .recharge_cap = 95,
 259                 .normal_cur_lvl = 700,
 260                 .normal_vol_lvl = 4200,
 261                 .maint_a_cur_lvl = 600,
 262                 .maint_a_vol_lvl = 4150,
 263                 .maint_a_chg_timer_h = 60,
 264                 .maint_b_cur_lvl = 600,
 265                 .maint_b_vol_lvl = 4100,
 266                 .maint_b_chg_timer_h = 200,
 267                 .low_high_cur_lvl = 300,
 268                 .low_high_vol_lvl = 4000,
 269                 .n_temp_tbl_elements = ARRAY_SIZE(ab8500_temp_tbl_b_thermistor),
 270                 .r_to_t_tbl = ab8500_temp_tbl_b_thermistor,
 271                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_b_thermistor),
 272                 .v_to_cap_tbl = cap_tbl_b_thermistor,
 273                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 274                 .batres_tbl = temp_to_batres_tbl_thermistor,
 275         },
 276 };
 277
 278 static struct ab8500_battery_type bat_type_ext_thermistor[] = {
 279         [BATTERY_UNKNOWN] = {
 280                 /* First element always represent the UNKNOWN battery */
 281                 .name = POWER_SUPPLY_TECHNOLOGY_UNKNOWN,
 282                 .resis_high = 0,
 283                 .resis_low = 0,
 284                 .battery_resistance = 300,
 285                 .charge_full_design = 612,
 286                 .nominal_voltage = 3700,
 287                 .termination_vol = 4050,
 288                 .termination_curr = 200,
 289                 .recharge_cap = 95,
 290                 .normal_cur_lvl = 400,
 291                 .normal_vol_lvl = 4100,
 292                 .maint_a_cur_lvl = 400,
 293                 .maint_a_vol_lvl = 4050,
 294                 .maint_a_chg_timer_h = 60,
 295                 .maint_b_cur_lvl = 400,
 296                 .maint_b_vol_lvl = 4000,
 297                 .maint_b_chg_timer_h = 200,
 298                 .low_high_cur_lvl = 300,
 299                 .low_high_vol_lvl = 4000,
 300                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
 301                 .r_to_t_tbl = temp_tbl,
 302                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
 303                 .v_to_cap_tbl = cap_tbl,
 304                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 305                 .batres_tbl = temp_to_batres_tbl_thermistor,
 306         },
 307 /*
 308  * These are the batteries that doesn't have an internal NTC resistor to measure
 309  * its temperature. The temperature in this case is measure with a NTC placed
 310  * near the battery but on the PCB.
 311  */
 312         {
 313                 .name = POWER_SUPPLY_TECHNOLOGY_LIPO,
 314                 .resis_high = 76000,
 315                 .resis_low = 53000,
 316                 .battery_resistance = 300,
 317                 .charge_full_design = 900,
 318                 .nominal_voltage = 3700,
 319                 .termination_vol = 4150,
 320                 .termination_curr = 100,
 321                 .recharge_cap = 95,
 322                 .normal_cur_lvl = 700,
 323                 .normal_vol_lvl = 4200,
 324                 .maint_a_cur_lvl = 600,
 325                 .maint_a_vol_lvl = 4150,
 326                 .maint_a_chg_timer_h = 60,
 327                 .maint_b_cur_lvl = 600,
 328                 .maint_b_vol_lvl = 4100,
 329                 .maint_b_chg_timer_h = 200,
 330                 .low_high_cur_lvl = 300,
 331                 .low_high_vol_lvl = 4000,
 332                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
 333                 .r_to_t_tbl = temp_tbl,
 334                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
 335                 .v_to_cap_tbl = cap_tbl,
 336                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 337                 .batres_tbl = temp_to_batres_tbl_thermistor,
 338         },
 339         {
 340                 .name = POWER_SUPPLY_TECHNOLOGY_LION,
 341                 .resis_high = 30000,
 342                 .resis_low = 10000,
 343                 .battery_resistance = 300,
 344                 .charge_full_design = 950,
 345                 .nominal_voltage = 3700,
 346                 .termination_vol = 4150,
 347                 .termination_curr = 100,
 348                 .recharge_cap = 95,
 349                 .normal_cur_lvl = 700,
 350                 .normal_vol_lvl = 4200,
 351                 .maint_a_cur_lvl = 600,
 352                 .maint_a_vol_lvl = 4150,
 353                 .maint_a_chg_timer_h = 60,
 354                 .maint_b_cur_lvl = 600,
 355                 .maint_b_vol_lvl = 4100,
 356                 .maint_b_chg_timer_h = 200,
 357                 .low_high_cur_lvl = 300,
 358                 .low_high_vol_lvl = 4000,
 359                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
 360                 .r_to_t_tbl = temp_tbl,
 361                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
 362                 .v_to_cap_tbl = cap_tbl,
 363                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 364                 .batres_tbl = temp_to_batres_tbl_thermistor,
 365         },
 366         {
 367                 .name = POWER_SUPPLY_TECHNOLOGY_LION,
 368                 .resis_high = 95000,
 369                 .resis_low = 76001,
 370                 .battery_resistance = 300,
 371                 .charge_full_design = 950,
 372                 .nominal_voltage = 3700,
 373                 .termination_vol = 4150,
 374                 .termination_curr = 100,
 375                 .recharge_cap = 95,
 376                 .normal_cur_lvl = 700,
 377                 .normal_vol_lvl = 4200,
 378                 .maint_a_cur_lvl = 600,
 379                 .maint_a_vol_lvl = 4150,
 380                 .maint_a_chg_timer_h = 60,
 381                 .maint_b_cur_lvl = 600,
 382                 .maint_b_vol_lvl = 4100,
 383                 .maint_b_chg_timer_h = 200,
 384                 .low_high_cur_lvl = 300,
 385                 .low_high_vol_lvl = 4000,
 386                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
 387                 .r_to_t_tbl = temp_tbl,
 388                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
 389                 .v_to_cap_tbl = cap_tbl,
 390                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 391                 .batres_tbl = temp_to_batres_tbl_thermistor,
 392         },
 393 };
 394
 395 static const struct ab8500_bm_capacity_levels cap_levels = {
 396         .critical       = 2,
 397         .low            = 10,
 398         .normal         = 70,
 399         .high           = 95,
 400         .full           = 100,
 401 };
 402
 403 static const struct ab8500_fg_parameters fg = {
 404         .recovery_sleep_timer = 10,
 405         .recovery_total_time = 100,
 406         .init_timer = 1,
 407         .init_discard_time = 5,
 408         .init_total_time = 40,
 409         .high_curr_time = 60,
 410         .accu_charging = 30,
 411         .accu_high_curr = 30,
 412         .high_curr_threshold = 50,
 413         .lowbat_threshold = 3100,
 414         .battok_falling_th_sel0 = 2860,
 415         .battok_raising_th_sel1 = 2860,
 416         .maint_thres = 95,
 417         .user_cap_limit = 15,
 418         .pcut_enable = 1,
 419         .pcut_max_time = 127,
 420         .pcut_flag_time = 112,
 421         .pcut_max_restart = 15,
 422         .pcut_debounce_time = 2,
 423 };
 424
 425 static const struct ab8500_maxim_parameters ab8500_maxi_params = {
 426         .ena_maxi = true,
 427         .chg_curr = 910,
 428         .wait_cycles = 10,
 429         .charger_curr_step = 100,
 430 };
 431
 432 static const struct ab8500_bm_charger_parameters chg = {
 433         .usb_volt_max           = 5500,
 434         .usb_curr_max           = 1500,
 435         .ac_volt_max            = 7500,
 436         .ac_curr_max            = 1500,
 437 };
 438
 439 /*
 440  * This array maps the raw hex value to charger output current used by the
 441  * AB8500 values
 442  */
 443 static int ab8500_charge_output_curr_map[] = {
 444         100,    200,    300,    400,    500,    600,    700,    800,
 445         900,    1000,   1100,   1200,   1300,   1400,   1500,   1500,
 446 };
 447
 448 /*
 449  * This array maps the raw hex value to charger input current used by the
 450  * AB8500 values
 451  */
 452 static int ab8500_charge_input_curr_map[] = {
 453         50,     98,     193,    290,    380,    450,    500,    600,
 454         700,    800,    900,    1000,   1100,   1300,   1400,   1500,
 455 };
 456
 457 struct ab8500_bm_data ab8500_bm_data = {
 458         .temp_under             = 3,
 459         .temp_low               = 8,
 460         .temp_high              = 43,
 461         .temp_over              = 48,
 462         .main_safety_tmr_h      = 4,
 463         .temp_interval_chg      = 20,
 464         .temp_interval_nochg    = 120,
 465         .usb_safety_tmr_h       = 4,
 466         .bkup_bat_v             = BUP_VCH_SEL_2P6V,
 467         .bkup_bat_i             = BUP_ICH_SEL_150UA,
 468         .no_maintenance         = false,
 469         .capacity_scaling       = false,
 470         .adc_therm              = AB8500_ADC_THERM_BATCTRL,
 471         .chg_unknown_bat        = false,
 472         .enable_overshoot       = false,
 473         .fg_res                 = 100,
 474         .cap_levels             = &cap_levels,
 475         .bat_type               = bat_type_thermistor,
 476         .n_btypes               = ARRAY_SIZE(bat_type_thermistor),
 477         .batt_id                = 0,
 478         .interval_charging      = 5,
 479         .interval_not_charging  = 120,
 480         .temp_hysteresis        = 3,
 481         .gnd_lift_resistance    = 34,
 482         .chg_output_curr        = ab8500_charge_output_curr_map,
 483         .n_chg_out_curr         = ARRAY_SIZE(ab8500_charge_output_curr_map),
 484         .maxi                   = &ab8500_maxi_params,
 485         .chg_params             = &chg,
 486         .fg_params              = &fg,
 487         .chg_input_curr         = ab8500_charge_input_curr_map,
 488         .n_chg_in_curr          = ARRAY_SIZE(ab8500_charge_input_curr_map),
 489 };
 490
 491 int ab8500_bm_of_probe(struct device *dev,
 492                        struct device_node *np,
 493                        struct ab8500_bm_data *bm)
 494 {
 495         const struct batres_vs_temp *tmp_batres_tbl;
 496         struct device_node *battery_node;
 497         const char *btech;
 498         int i;
 499
 500         /* get phandle to 'battery-info' node */
 501         battery_node = of_parse_phandle(np, "battery", 0);
 502         if (!battery_node) {
 503                 dev_err(dev, "battery node or reference missing\n");
 504                 return -EINVAL;
 505         }
 506
 507         btech = of_get_property(battery_node, "stericsson,battery-type", NULL);
 508         if (!btech) {
 509                 dev_warn(dev, "missing property battery-name/type\n");
 510                 of_node_put(battery_node);
 511                 return -EINVAL;
 512         }
 513
 514         if (strncmp(btech, "LION", 4) == 0) {
 515                 bm->no_maintenance  = true;
 516                 bm->chg_unknown_bat = true;
 517                 bm->bat_type[BATTERY_UNKNOWN].charge_full_design = 2600;
 518                 bm->bat_type[BATTERY_UNKNOWN].termination_vol    = 4150;
 519                 bm->bat_type[BATTERY_UNKNOWN].recharge_cap       = 95;
 520                 bm->bat_type[BATTERY_UNKNOWN].normal_cur_lvl     = 520;
 521                 bm->bat_type[BATTERY_UNKNOWN].normal_vol_lvl     = 4200;
 522         }
 523
 524         if (of_property_read_bool(battery_node, "thermistor-on-batctrl")) {
 525                 if (strncmp(btech, "LION", 4) == 0)
 526                         tmp_batres_tbl = temp_to_batres_tbl_9100;
 527                 else
 528                         tmp_batres_tbl = temp_to_batres_tbl_thermistor;
 529         } else {
 530                 bm->n_btypes   = 4;
 531                 bm->bat_type   = bat_type_ext_thermistor;
 532                 bm->adc_therm  = AB8500_ADC_THERM_BATTEMP;
 533                 tmp_batres_tbl = temp_to_batres_tbl_ext_thermistor;
 534         }
 535
 536         /* select the battery resolution table */
 537         for (i = 0; i < bm->n_btypes; ++i)
 538                 bm->bat_type[i].batres_tbl = tmp_batres_tbl;
 539
 540         of_node_put(battery_node);
 541
 542         return 0;
 543 }