LXR linux/drivers/power/supply/ab8500

   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 */
  14const 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};
  31EXPORT_SYMBOL(ab8500_temp_tbl_a_thermistor);
  32
  33const int ab8500_temp_tbl_a_size = ARRAY_SIZE(ab8500_temp_tbl_a_thermistor);
  34EXPORT_SYMBOL(ab8500_temp_tbl_a_size);
  35
  36const 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};
  53EXPORT_SYMBOL(ab8500_temp_tbl_b_thermistor);
  54
  55const int ab8500_temp_tbl_b_size = ARRAY_SIZE(ab8500_temp_tbl_b_thermistor);
  56EXPORT_SYMBOL(ab8500_temp_tbl_b_size);
  57
  58static 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
  81static 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
 104static 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 */
 135static 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 */
 157static 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 */
 171static 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 */
 182static 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
 192static 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
 278static 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
 395static 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
 403static 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
 425static 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
 432static 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 */
 443static 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 */
 452static 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
 457struct 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
 491int 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}
 544