drivers/power/ab8500_bmdata.c

   1 #include <linux/export.h>
   2 #include <linux/power_supply.h>
   3 #include <linux/of.h>
   4 #include <linux/mfd/abx500.h>
   5 #include <linux/mfd/abx500/ab8500.h>
   6 #include <linux/mfd/abx500/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 static struct abx500_res_to_temp 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
  32 static struct abx500_res_to_temp temp_tbl_B_thermistor[] = {
  33         {-5, 200000},
  34         { 0, 159024},
  35         { 5, 151921},
  36         {10, 144300},
  37         {15, 136424},
  38         {20, 128565},
  39         {25, 120978},
  40         {30, 113875},
  41         {35, 107397},
  42         {40, 101629},
  43         {45,  96592},
  44         {50,  92253},
  45         {55,  88569},
  46         {60,  85461},
  47         {65,  82869},
  48 };
  49
  50 static struct abx500_v_to_cap cap_tbl_A_thermistor[] = {
  51         {4171,  100},
  52         {4114,   95},
  53         {4009,   83},
  54         {3947,   74},
  55         {3907,   67},
  56         {3863,   59},
  57         {3830,   56},
  58         {3813,   53},
  59         {3791,   46},
  60         {3771,   33},
  61         {3754,   25},
  62         {3735,   20},
  63         {3717,   17},
  64         {3681,   13},
  65         {3664,    8},
  66         {3651,    6},
  67         {3635,    5},
  68         {3560,    3},
  69         {3408,    1},
  70         {3247,    0},
  71 };
  72
  73 static struct abx500_v_to_cap cap_tbl_B_thermistor[] = {
  74         {4161,  100},
  75         {4124,   98},
  76         {4044,   90},
  77         {4003,   85},
  78         {3966,   80},
  79         {3933,   75},
  80         {3888,   67},
  81         {3849,   60},
  82         {3813,   55},
  83         {3787,   47},
  84         {3772,   30},
  85         {3751,   25},
  86         {3718,   20},
  87         {3681,   16},
  88         {3660,   14},
  89         {3589,   10},
  90         {3546,    7},
  91         {3495,    4},
  92         {3404,    2},
  93         {3250,    0},
  94 };
  95
  96 static struct abx500_v_to_cap cap_tbl[] = {
  97         {4186,  100},
  98         {4163,   99},
  99         {4114,   95},
 100         {4068,   90},
 101         {3990,   80},
 102         {3926,   70},
 103         {3898,   65},
 104         {3866,   60},
 105         {3833,   55},
 106         {3812,   50},
 107         {3787,   40},
 108         {3768,   30},
 109         {3747,   25},
 110         {3730,   20},
 111         {3705,   15},
 112         {3699,   14},
 113         {3684,   12},
 114         {3672,    9},
 115         {3657,    7},
 116         {3638,    6},
 117         {3556,    4},
 118         {3424,    2},
 119         {3317,    1},
 120         {3094,    0},
 121 };
 122
 123 /*
 124  * Note that the res_to_temp table must be strictly sorted by falling
 125  * resistance values to work.
 126  */
 127 static struct abx500_res_to_temp temp_tbl[] = {
 128         {-5, 214834},
 129         { 0, 162943},
 130         { 5, 124820},
 131         {10,  96520},
 132         {15,  75306},
 133         {20,  59254},
 134         {25,  47000},
 135         {30,  37566},
 136         {35,  30245},
 137         {40,  24520},
 138         {45,  20010},
 139         {50,  16432},
 140         {55,  13576},
 141         {60,  11280},
 142         {65,   9425},
 143 };
 144
 145 /*
 146  * Note that the batres_vs_temp table must be strictly sorted by falling
 147  * temperature values to work.
 148  */
 149 static struct batres_vs_temp temp_to_batres_tbl_thermistor[] = {
 150         { 40, 120},
 151         { 30, 135},
 152         { 20, 165},
 153         { 10, 230},
 154         { 00, 325},
 155         {-10, 445},
 156         {-20, 595},
 157 };
 158
 159 /*
 160  * Note that the batres_vs_temp table must be strictly sorted by falling
 161  * temperature values to work.
 162  */
 163 static struct batres_vs_temp temp_to_batres_tbl_ext_thermistor[] = {
 164         { 60, 300},
 165         { 30, 300},
 166         { 20, 300},
 167         { 10, 300},
 168         { 00, 300},
 169         {-10, 300},
 170         {-20, 300},
 171 };
 172
 173 /* battery resistance table for LI ION 9100 battery */
 174 static struct batres_vs_temp temp_to_batres_tbl_9100[] = {
 175         { 60, 180},
 176         { 30, 180},
 177         { 20, 180},
 178         { 10, 180},
 179         { 00, 180},
 180         {-10, 180},
 181         {-20, 180},
 182 };
 183
 184 static struct abx500_battery_type bat_type_thermistor[] = {
 185         [BATTERY_UNKNOWN] = {
 186                 /* First element always represent the UNKNOWN battery */
 187                 .name = POWER_SUPPLY_TECHNOLOGY_UNKNOWN,
 188                 .resis_high = 0,
 189                 .resis_low = 0,
 190                 .battery_resistance = 300,
 191                 .charge_full_design = 612,
 192                 .nominal_voltage = 3700,
 193                 .termination_vol = 4050,
 194                 .termination_curr = 200,
 195                 .recharge_cap = 95,
 196                 .normal_cur_lvl = 400,
 197                 .normal_vol_lvl = 4100,
 198                 .maint_a_cur_lvl = 400,
 199                 .maint_a_vol_lvl = 4050,
 200                 .maint_a_chg_timer_h = 60,
 201                 .maint_b_cur_lvl = 400,
 202                 .maint_b_vol_lvl = 4000,
 203                 .maint_b_chg_timer_h = 200,
 204                 .low_high_cur_lvl = 300,
 205                 .low_high_vol_lvl = 4000,
 206                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
 207                 .r_to_t_tbl = temp_tbl,
 208                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
 209                 .v_to_cap_tbl = cap_tbl,
 210                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 211                 .batres_tbl = temp_to_batres_tbl_thermistor,
 212         },
 213         {
 214                 .name = POWER_SUPPLY_TECHNOLOGY_LIPO,
 215                 .resis_high = 53407,
 216                 .resis_low = 12500,
 217                 .battery_resistance = 300,
 218                 .charge_full_design = 900,
 219                 .nominal_voltage = 3600,
 220                 .termination_vol = 4150,
 221                 .termination_curr = 80,
 222                 .recharge_cap = 95,
 223                 .normal_cur_lvl = 700,
 224                 .normal_vol_lvl = 4200,
 225                 .maint_a_cur_lvl = 600,
 226                 .maint_a_vol_lvl = 4150,
 227                 .maint_a_chg_timer_h = 60,
 228                 .maint_b_cur_lvl = 600,
 229                 .maint_b_vol_lvl = 4100,
 230                 .maint_b_chg_timer_h = 200,
 231                 .low_high_cur_lvl = 300,
 232                 .low_high_vol_lvl = 4000,
 233                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl_A_thermistor),
 234                 .r_to_t_tbl = temp_tbl_A_thermistor,
 235                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_A_thermistor),
 236                 .v_to_cap_tbl = cap_tbl_A_thermistor,
 237                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 238                 .batres_tbl = temp_to_batres_tbl_thermistor,
 239
 240         },
 241         {
 242                 .name = POWER_SUPPLY_TECHNOLOGY_LIPO,
 243                 .resis_high = 200000,
 244                 .resis_low = 82869,
 245                 .battery_resistance = 300,
 246                 .charge_full_design = 900,
 247                 .nominal_voltage = 3600,
 248                 .termination_vol = 4150,
 249                 .termination_curr = 80,
 250                 .recharge_cap = 95,
 251                 .normal_cur_lvl = 700,
 252                 .normal_vol_lvl = 4200,
 253                 .maint_a_cur_lvl = 600,
 254                 .maint_a_vol_lvl = 4150,
 255                 .maint_a_chg_timer_h = 60,
 256                 .maint_b_cur_lvl = 600,
 257                 .maint_b_vol_lvl = 4100,
 258                 .maint_b_chg_timer_h = 200,
 259                 .low_high_cur_lvl = 300,
 260                 .low_high_vol_lvl = 4000,
 261                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl_B_thermistor),
 262                 .r_to_t_tbl = temp_tbl_B_thermistor,
 263                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_B_thermistor),
 264                 .v_to_cap_tbl = cap_tbl_B_thermistor,
 265                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 266                 .batres_tbl = temp_to_batres_tbl_thermistor,
 267         },
 268 };
 269
 270 static struct abx500_battery_type bat_type_ext_thermistor[] = {
 271         [BATTERY_UNKNOWN] = {
 272                 /* First element always represent the UNKNOWN battery */
 273                 .name = POWER_SUPPLY_TECHNOLOGY_UNKNOWN,
 274                 .resis_high = 0,
 275                 .resis_low = 0,
 276                 .battery_resistance = 300,
 277                 .charge_full_design = 612,
 278                 .nominal_voltage = 3700,
 279                 .termination_vol = 4050,
 280                 .termination_curr = 200,
 281                 .recharge_cap = 95,
 282                 .normal_cur_lvl = 400,
 283                 .normal_vol_lvl = 4100,
 284                 .maint_a_cur_lvl = 400,
 285                 .maint_a_vol_lvl = 4050,
 286                 .maint_a_chg_timer_h = 60,
 287                 .maint_b_cur_lvl = 400,
 288                 .maint_b_vol_lvl = 4000,
 289                 .maint_b_chg_timer_h = 200,
 290                 .low_high_cur_lvl = 300,
 291                 .low_high_vol_lvl = 4000,
 292                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
 293                 .r_to_t_tbl = temp_tbl,
 294                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
 295                 .v_to_cap_tbl = cap_tbl,
 296                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 297                 .batres_tbl = temp_to_batres_tbl_thermistor,
 298         },
 299 /*
 300  * These are the batteries that doesn't have an internal NTC resistor to measure
 301  * its temperature. The temperature in this case is measure with a NTC placed
 302  * near the battery but on the PCB.
 303  */
 304         {
 305                 .name = POWER_SUPPLY_TECHNOLOGY_LIPO,
 306                 .resis_high = 76000,
 307                 .resis_low = 53000,
 308                 .battery_resistance = 300,
 309                 .charge_full_design = 900,
 310                 .nominal_voltage = 3700,
 311                 .termination_vol = 4150,
 312                 .termination_curr = 100,
 313                 .recharge_cap = 95,
 314                 .normal_cur_lvl = 700,
 315                 .normal_vol_lvl = 4200,
 316                 .maint_a_cur_lvl = 600,
 317                 .maint_a_vol_lvl = 4150,
 318                 .maint_a_chg_timer_h = 60,
 319                 .maint_b_cur_lvl = 600,
 320                 .maint_b_vol_lvl = 4100,
 321                 .maint_b_chg_timer_h = 200,
 322                 .low_high_cur_lvl = 300,
 323                 .low_high_vol_lvl = 4000,
 324                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
 325                 .r_to_t_tbl = temp_tbl,
 326                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
 327                 .v_to_cap_tbl = cap_tbl,
 328                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 329                 .batres_tbl = temp_to_batres_tbl_thermistor,
 330         },
 331         {
 332                 .name = POWER_SUPPLY_TECHNOLOGY_LION,
 333                 .resis_high = 30000,
 334                 .resis_low = 10000,
 335                 .battery_resistance = 300,
 336                 .charge_full_design = 950,
 337                 .nominal_voltage = 3700,
 338                 .termination_vol = 4150,
 339                 .termination_curr = 100,
 340                 .recharge_cap = 95,
 341                 .normal_cur_lvl = 700,
 342                 .normal_vol_lvl = 4200,
 343                 .maint_a_cur_lvl = 600,
 344                 .maint_a_vol_lvl = 4150,
 345                 .maint_a_chg_timer_h = 60,
 346                 .maint_b_cur_lvl = 600,
 347                 .maint_b_vol_lvl = 4100,
 348                 .maint_b_chg_timer_h = 200,
 349                 .low_high_cur_lvl = 300,
 350                 .low_high_vol_lvl = 4000,
 351                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
 352                 .r_to_t_tbl = temp_tbl,
 353                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
 354                 .v_to_cap_tbl = cap_tbl,
 355                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 356                 .batres_tbl = temp_to_batres_tbl_thermistor,
 357         },
 358         {
 359                 .name = POWER_SUPPLY_TECHNOLOGY_LION,
 360                 .resis_high = 95000,
 361                 .resis_low = 76001,
 362                 .battery_resistance = 300,
 363                 .charge_full_design = 950,
 364                 .nominal_voltage = 3700,
 365                 .termination_vol = 4150,
 366                 .termination_curr = 100,
 367                 .recharge_cap = 95,
 368                 .normal_cur_lvl = 700,
 369                 .normal_vol_lvl = 4200,
 370                 .maint_a_cur_lvl = 600,
 371                 .maint_a_vol_lvl = 4150,
 372                 .maint_a_chg_timer_h = 60,
 373                 .maint_b_cur_lvl = 600,
 374                 .maint_b_vol_lvl = 4100,
 375                 .maint_b_chg_timer_h = 200,
 376                 .low_high_cur_lvl = 300,
 377                 .low_high_vol_lvl = 4000,
 378                 .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
 379                 .r_to_t_tbl = temp_tbl,
 380                 .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
 381                 .v_to_cap_tbl = cap_tbl,
 382                 .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 383                 .batres_tbl = temp_to_batres_tbl_thermistor,
 384         },
 385 };
 386
 387 static const struct abx500_bm_capacity_levels cap_levels = {
 388         .critical       = 2,
 389         .low            = 10,
 390         .normal         = 70,
 391         .high           = 95,
 392         .full           = 100,
 393 };
 394
 395 static const struct abx500_fg_parameters fg = {
 396         .recovery_sleep_timer = 10,
 397         .recovery_total_time = 100,
 398         .init_timer = 1,
 399         .init_discard_time = 5,
 400         .init_total_time = 40,
 401         .high_curr_time = 60,
 402         .accu_charging = 30,
 403         .accu_high_curr = 30,
 404         .high_curr_threshold = 50,
 405         .lowbat_threshold = 3100,
 406         .battok_falling_th_sel0 = 2860,
 407         .battok_raising_th_sel1 = 2860,
 408         .maint_thres = 95,
 409         .user_cap_limit = 15,
 410 };
 411
 412 static const struct abx500_maxim_parameters maxi_params = {
 413         .ena_maxi = true,
 414         .chg_curr = 910,
 415         .wait_cycles = 10,
 416         .charger_curr_step = 100,
 417 };
 418
 419 static const struct abx500_bm_charger_parameters chg = {
 420         .usb_volt_max           = 5500,
 421         .usb_curr_max           = 1500,
 422         .ac_volt_max            = 7500,
 423         .ac_curr_max            = 1500,
 424 };
 425
 426 struct abx500_bm_data ab8500_bm_data = {
 427         .temp_under             = 3,
 428         .temp_low               = 8,
 429         .temp_high              = 43,
 430         .temp_over              = 48,
 431         .main_safety_tmr_h      = 4,
 432         .temp_interval_chg      = 20,
 433         .temp_interval_nochg    = 120,
 434         .usb_safety_tmr_h       = 4,
 435         .bkup_bat_v             = BUP_VCH_SEL_2P6V,
 436         .bkup_bat_i             = BUP_ICH_SEL_150UA,
 437         .no_maintenance         = false,
 438         .capacity_scaling       = false,
 439         .adc_therm              = ABx500_ADC_THERM_BATCTRL,
 440         .chg_unknown_bat        = false,
 441         .enable_overshoot       = false,
 442         .fg_res                 = 100,
 443         .cap_levels             = &cap_levels,
 444         .bat_type               = bat_type_thermistor,
 445         .n_btypes               = 3,
 446         .batt_id                = 0,
 447         .interval_charging      = 5,
 448         .interval_not_charging  = 120,
 449         .temp_hysteresis        = 3,
 450         .gnd_lift_resistance    = 34,
 451         .maxi                   = &maxi_params,
 452         .chg_params             = &chg,
 453         .fg_params              = &fg,
 454 };
 455
 456 int ab8500_bm_of_probe(struct device *dev,
 457                        struct device_node *np,
 458                        struct abx500_bm_data *bm)
 459 {
 460         struct batres_vs_temp *tmp_batres_tbl;
 461         struct device_node *battery_node;
 462         const char *btech;
 463         int i;
 464
 465         /* get phandle to 'battery-info' node */
 466         battery_node = of_parse_phandle(np, "battery", 0);
 467         if (!battery_node) {
 468                 dev_err(dev, "battery node or reference missing\n");
 469                 return -EINVAL;
 470         }
 471
 472         btech = of_get_property(battery_node, "stericsson,battery-type", NULL);
 473         if (!btech) {
 474                 dev_warn(dev, "missing property battery-name/type\n");
 475                 return -EINVAL;
 476         }
 477
 478         if (strncmp(btech, "LION", 4) == 0) {
 479                 bm->no_maintenance  = true;
 480                 bm->chg_unknown_bat = true;
 481                 bm->bat_type[BATTERY_UNKNOWN].charge_full_design = 2600;
 482                 bm->bat_type[BATTERY_UNKNOWN].termination_vol    = 4150;
 483                 bm->bat_type[BATTERY_UNKNOWN].recharge_cap       = 95;
 484                 bm->bat_type[BATTERY_UNKNOWN].normal_cur_lvl     = 520;
 485                 bm->bat_type[BATTERY_UNKNOWN].normal_vol_lvl     = 4200;
 486         }
 487
 488         if (of_property_read_bool(battery_node, "thermistor-on-batctrl")) {
 489                 if (strncmp(btech, "LION", 4) == 0)
 490                         tmp_batres_tbl = temp_to_batres_tbl_9100;
 491                 else
 492                         tmp_batres_tbl = temp_to_batres_tbl_thermistor;
 493         } else {
 494                 bm->n_btypes   = 4;
 495                 bm->bat_type   = bat_type_ext_thermistor;
 496                 bm->adc_therm  = ABx500_ADC_THERM_BATTEMP;
 497                 tmp_batres_tbl = temp_to_batres_tbl_ext_thermistor;
 498         }
 499
 500         /* select the battery resolution table */
 501         for (i = 0; i < bm->n_btypes; ++i)
 502                 bm->bat_type[i].batres_tbl = tmp_batres_tbl;
 503
 504         of_node_put(battery_node);
 505
 506         return 0;
 507 }