| 1 | /* |
| 2 | * Batttery Driver for Dialog DA9052 PMICs |
| 3 | * |
| 4 | * Copyright(c) 2011 Dialog Semiconductor Ltd. |
| 5 | * |
| 6 | * Author: David Dajun Chen <dchen@diasemi.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/delay.h> |
| 15 | #include <linux/freezer.h> |
| 16 | #include <linux/fs.h> |
| 17 | #include <linux/jiffies.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/timer.h> |
| 20 | #include <linux/uaccess.h> |
| 21 | #include <linux/platform_device.h> |
| 22 | #include <linux/power_supply.h> |
| 23 | |
| 24 | #include <linux/mfd/da9052/da9052.h> |
| 25 | #include <linux/mfd/da9052/pdata.h> |
| 26 | #include <linux/mfd/da9052/reg.h> |
| 27 | |
| 28 | /* STATIC CONFIGURATION */ |
| 29 | #define DA9052_BAT_CUTOFF_VOLT 2800 |
| 30 | #define DA9052_BAT_TSH 62000 |
| 31 | #define DA9052_BAT_LOW_CAP 4 |
| 32 | #define DA9052_AVG_SZ 4 |
| 33 | #define DA9052_VC_TBL_SZ 68 |
| 34 | #define DA9052_VC_TBL_REF_SZ 3 |
| 35 | |
| 36 | #define DA9052_ISET_USB_MASK 0x0F |
| 37 | #define DA9052_CHG_USB_ILIM_MASK 0x40 |
| 38 | #define DA9052_CHG_LIM_COLS 16 |
| 39 | |
| 40 | #define DA9052_MEAN(x, y) ((x + y) / 2) |
| 41 | |
| 42 | enum charger_type_enum { |
| 43 | DA9052_NOCHARGER = 1, |
| 44 | DA9052_CHARGER, |
| 45 | }; |
| 46 | |
| 47 | static const u16 da9052_chg_current_lim[2][DA9052_CHG_LIM_COLS] = { |
| 48 | {70, 80, 90, 100, 110, 120, 400, 450, |
| 49 | 500, 550, 600, 650, 700, 900, 1100, 1300}, |
| 50 | {80, 90, 100, 110, 120, 400, 450, 500, |
| 51 | 550, 600, 800, 1000, 1200, 1400, 1600, 1800}, |
| 52 | }; |
| 53 | |
| 54 | static const u16 vc_tbl_ref[3] = {10, 25, 40}; |
| 55 | /* Lookup table for voltage vs capacity */ |
| 56 | static u32 const vc_tbl[3][68][2] = { |
| 57 | /* For temperature 10 degree Celsius */ |
| 58 | { |
| 59 | {4082, 100}, {4036, 98}, |
| 60 | {4020, 96}, {4008, 95}, |
| 61 | {3997, 93}, {3983, 91}, |
| 62 | {3964, 90}, {3943, 88}, |
| 63 | {3926, 87}, {3912, 85}, |
| 64 | {3900, 84}, {3890, 82}, |
| 65 | {3881, 80}, {3873, 79}, |
| 66 | {3865, 77}, {3857, 76}, |
| 67 | {3848, 74}, {3839, 73}, |
| 68 | {3829, 71}, {3820, 70}, |
| 69 | {3811, 68}, {3802, 67}, |
| 70 | {3794, 65}, {3785, 64}, |
| 71 | {3778, 62}, {3770, 61}, |
| 72 | {3763, 59}, {3756, 58}, |
| 73 | {3750, 56}, {3744, 55}, |
| 74 | {3738, 53}, {3732, 52}, |
| 75 | {3727, 50}, {3722, 49}, |
| 76 | {3717, 47}, {3712, 46}, |
| 77 | {3708, 44}, {3703, 43}, |
| 78 | {3700, 41}, {3696, 40}, |
| 79 | {3693, 38}, {3691, 37}, |
| 80 | {3688, 35}, {3686, 34}, |
| 81 | {3683, 32}, {3681, 31}, |
| 82 | {3678, 29}, {3675, 28}, |
| 83 | {3672, 26}, {3669, 25}, |
| 84 | {3665, 23}, {3661, 22}, |
| 85 | {3656, 21}, {3651, 19}, |
| 86 | {3645, 18}, {3639, 16}, |
| 87 | {3631, 15}, {3622, 13}, |
| 88 | {3611, 12}, {3600, 10}, |
| 89 | {3587, 9}, {3572, 7}, |
| 90 | {3548, 6}, {3503, 5}, |
| 91 | {3420, 3}, {3268, 2}, |
| 92 | {2992, 1}, {2746, 0} |
| 93 | }, |
| 94 | /* For temperature 25 degree Celsius */ |
| 95 | { |
| 96 | {4102, 100}, {4065, 98}, |
| 97 | {4048, 96}, {4034, 95}, |
| 98 | {4021, 93}, {4011, 92}, |
| 99 | {4001, 90}, {3986, 88}, |
| 100 | {3968, 87}, {3952, 85}, |
| 101 | {3938, 84}, {3926, 82}, |
| 102 | {3916, 81}, {3908, 79}, |
| 103 | {3900, 77}, {3892, 76}, |
| 104 | {3883, 74}, {3874, 73}, |
| 105 | {3864, 71}, {3855, 70}, |
| 106 | {3846, 68}, {3836, 67}, |
| 107 | {3827, 65}, {3819, 64}, |
| 108 | {3810, 62}, {3801, 61}, |
| 109 | {3793, 59}, {3786, 58}, |
| 110 | {3778, 56}, {3772, 55}, |
| 111 | {3765, 53}, {3759, 52}, |
| 112 | {3754, 50}, {3748, 49}, |
| 113 | {3743, 47}, {3738, 46}, |
| 114 | {3733, 44}, {3728, 43}, |
| 115 | {3724, 41}, {3720, 40}, |
| 116 | {3716, 38}, {3712, 37}, |
| 117 | {3709, 35}, {3706, 34}, |
| 118 | {3703, 33}, {3701, 31}, |
| 119 | {3698, 30}, {3696, 28}, |
| 120 | {3693, 27}, {3690, 25}, |
| 121 | {3687, 24}, {3683, 22}, |
| 122 | {3680, 21}, {3675, 19}, |
| 123 | {3671, 18}, {3666, 17}, |
| 124 | {3660, 15}, {3654, 14}, |
| 125 | {3647, 12}, {3639, 11}, |
| 126 | {3630, 9}, {3621, 8}, |
| 127 | {3613, 6}, {3606, 5}, |
| 128 | {3597, 4}, {3582, 2}, |
| 129 | {3546, 1}, {2747, 0} |
| 130 | }, |
| 131 | /* For temperature 40 degree Celsius */ |
| 132 | { |
| 133 | {4114, 100}, {4081, 98}, |
| 134 | {4065, 96}, {4050, 95}, |
| 135 | {4036, 93}, {4024, 92}, |
| 136 | {4013, 90}, {4002, 88}, |
| 137 | {3990, 87}, {3976, 85}, |
| 138 | {3962, 84}, {3950, 82}, |
| 139 | {3939, 81}, {3930, 79}, |
| 140 | {3921, 77}, {3912, 76}, |
| 141 | {3902, 74}, {3893, 73}, |
| 142 | {3883, 71}, {3874, 70}, |
| 143 | {3865, 68}, {3856, 67}, |
| 144 | {3847, 65}, {3838, 64}, |
| 145 | {3829, 62}, {3820, 61}, |
| 146 | {3812, 59}, {3803, 58}, |
| 147 | {3795, 56}, {3787, 55}, |
| 148 | {3780, 53}, {3773, 52}, |
| 149 | {3767, 50}, {3761, 49}, |
| 150 | {3756, 47}, {3751, 46}, |
| 151 | {3746, 44}, {3741, 43}, |
| 152 | {3736, 41}, {3732, 40}, |
| 153 | {3728, 38}, {3724, 37}, |
| 154 | {3720, 35}, {3716, 34}, |
| 155 | {3713, 33}, {3710, 31}, |
| 156 | {3707, 30}, {3704, 28}, |
| 157 | {3701, 27}, {3698, 25}, |
| 158 | {3695, 24}, {3691, 22}, |
| 159 | {3686, 21}, {3681, 19}, |
| 160 | {3676, 18}, {3671, 17}, |
| 161 | {3666, 15}, {3661, 14}, |
| 162 | {3655, 12}, {3648, 11}, |
| 163 | {3640, 9}, {3632, 8}, |
| 164 | {3622, 6}, {3616, 5}, |
| 165 | {3611, 4}, {3604, 2}, |
| 166 | {3594, 1}, {2747, 0} |
| 167 | } |
| 168 | }; |
| 169 | |
| 170 | struct da9052_battery { |
| 171 | struct da9052 *da9052; |
| 172 | struct power_supply psy; |
| 173 | struct notifier_block nb; |
| 174 | int charger_type; |
| 175 | int status; |
| 176 | int health; |
| 177 | }; |
| 178 | |
| 179 | static inline int volt_reg_to_mV(int value) |
| 180 | { |
| 181 | return ((value * 1000) / 512) + 2500; |
| 182 | } |
| 183 | |
| 184 | static inline int ichg_reg_to_mA(int value) |
| 185 | { |
| 186 | return (value * 3900) / 1000; |
| 187 | } |
| 188 | |
| 189 | static int da9052_read_chgend_current(struct da9052_battery *bat, |
| 190 | int *current_mA) |
| 191 | { |
| 192 | int ret; |
| 193 | |
| 194 | if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) |
| 195 | return -EINVAL; |
| 196 | |
| 197 | ret = da9052_reg_read(bat->da9052, DA9052_ICHG_END_REG); |
| 198 | if (ret < 0) |
| 199 | return ret; |
| 200 | |
| 201 | *current_mA = ichg_reg_to_mA(ret & DA9052_ICHGEND_ICHGEND); |
| 202 | |
| 203 | return 0; |
| 204 | } |
| 205 | |
| 206 | static int da9052_read_chg_current(struct da9052_battery *bat, int *current_mA) |
| 207 | { |
| 208 | int ret; |
| 209 | |
| 210 | if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) |
| 211 | return -EINVAL; |
| 212 | |
| 213 | ret = da9052_reg_read(bat->da9052, DA9052_ICHG_AV_REG); |
| 214 | if (ret < 0) |
| 215 | return ret; |
| 216 | |
| 217 | *current_mA = ichg_reg_to_mA(ret & DA9052_ICHGAV_ICHGAV); |
| 218 | |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | static int da9052_bat_check_status(struct da9052_battery *bat, int *status) |
| 223 | { |
| 224 | u8 v[2] = {0, 0}; |
| 225 | u8 bat_status; |
| 226 | u8 chg_end; |
| 227 | int ret; |
| 228 | int chg_current; |
| 229 | int chg_end_current; |
| 230 | bool dcinsel; |
| 231 | bool dcindet; |
| 232 | bool vbussel; |
| 233 | bool vbusdet; |
| 234 | bool dc; |
| 235 | bool vbus; |
| 236 | |
| 237 | ret = da9052_group_read(bat->da9052, DA9052_STATUS_A_REG, 2, v); |
| 238 | if (ret < 0) |
| 239 | return ret; |
| 240 | |
| 241 | bat_status = v[0]; |
| 242 | chg_end = v[1]; |
| 243 | |
| 244 | dcinsel = bat_status & DA9052_STATUSA_DCINSEL; |
| 245 | dcindet = bat_status & DA9052_STATUSA_DCINDET; |
| 246 | vbussel = bat_status & DA9052_STATUSA_VBUSSEL; |
| 247 | vbusdet = bat_status & DA9052_STATUSA_VBUSDET; |
| 248 | dc = dcinsel && dcindet; |
| 249 | vbus = vbussel && vbusdet; |
| 250 | |
| 251 | /* Preference to WALL(DCIN) charger unit */ |
| 252 | if (dc || vbus) { |
| 253 | bat->charger_type = DA9052_CHARGER; |
| 254 | |
| 255 | /* If charging end flag is set and Charging current is greater |
| 256 | * than charging end limit then battery is charging |
| 257 | */ |
| 258 | if ((chg_end & DA9052_STATUSB_CHGEND) != 0) { |
| 259 | ret = da9052_read_chg_current(bat, &chg_current); |
| 260 | if (ret < 0) |
| 261 | return ret; |
| 262 | ret = da9052_read_chgend_current(bat, &chg_end_current); |
| 263 | if (ret < 0) |
| 264 | return ret; |
| 265 | |
| 266 | if (chg_current >= chg_end_current) |
| 267 | bat->status = POWER_SUPPLY_STATUS_CHARGING; |
| 268 | else |
| 269 | bat->status = POWER_SUPPLY_STATUS_NOT_CHARGING; |
| 270 | } else { |
| 271 | /* If Charging end flag is cleared then battery is |
| 272 | * charging |
| 273 | */ |
| 274 | bat->status = POWER_SUPPLY_STATUS_CHARGING; |
| 275 | } |
| 276 | } else if (dcindet || vbusdet) { |
| 277 | bat->charger_type = DA9052_CHARGER; |
| 278 | bat->status = POWER_SUPPLY_STATUS_NOT_CHARGING; |
| 279 | } else { |
| 280 | bat->charger_type = DA9052_NOCHARGER; |
| 281 | bat->status = POWER_SUPPLY_STATUS_DISCHARGING; |
| 282 | } |
| 283 | |
| 284 | if (status != NULL) |
| 285 | *status = bat->status; |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | static int da9052_bat_read_volt(struct da9052_battery *bat, int *volt_mV) |
| 290 | { |
| 291 | int volt; |
| 292 | |
| 293 | volt = da9052_adc_manual_read(bat->da9052, DA9052_ADC_MAN_MUXSEL_VBAT); |
| 294 | if (volt < 0) |
| 295 | return volt; |
| 296 | |
| 297 | *volt_mV = volt_reg_to_mV(volt); |
| 298 | |
| 299 | return 0; |
| 300 | } |
| 301 | |
| 302 | static int da9052_bat_check_presence(struct da9052_battery *bat, int *illegal) |
| 303 | { |
| 304 | int bat_temp; |
| 305 | |
| 306 | bat_temp = da9052_adc_read_temp(bat->da9052); |
| 307 | if (bat_temp < 0) |
| 308 | return bat_temp; |
| 309 | |
| 310 | if (bat_temp > DA9052_BAT_TSH) |
| 311 | *illegal = 1; |
| 312 | else |
| 313 | *illegal = 0; |
| 314 | |
| 315 | return 0; |
| 316 | } |
| 317 | |
| 318 | static int da9052_bat_interpolate(int vbat_lower, int vbat_upper, |
| 319 | int level_lower, int level_upper, |
| 320 | int bat_voltage) |
| 321 | { |
| 322 | int tmp; |
| 323 | |
| 324 | tmp = ((level_upper - level_lower) * 1000) / (vbat_upper - vbat_lower); |
| 325 | tmp = level_lower + (((bat_voltage - vbat_lower) * tmp) / 1000); |
| 326 | |
| 327 | return tmp; |
| 328 | } |
| 329 | |
| 330 | static unsigned char da9052_determine_vc_tbl_index(unsigned char adc_temp) |
| 331 | { |
| 332 | int i; |
| 333 | |
| 334 | if (adc_temp <= vc_tbl_ref[0]) |
| 335 | return 0; |
| 336 | |
| 337 | if (adc_temp > vc_tbl_ref[DA9052_VC_TBL_REF_SZ - 1]) |
| 338 | return DA9052_VC_TBL_REF_SZ - 1; |
| 339 | |
| 340 | for (i = 0; i < DA9052_VC_TBL_REF_SZ - 1; i++) { |
| 341 | if ((adc_temp > vc_tbl_ref[i]) && |
| 342 | (adc_temp <= DA9052_MEAN(vc_tbl_ref[i], vc_tbl_ref[i + 1]))) |
| 343 | return i; |
| 344 | if ((adc_temp > DA9052_MEAN(vc_tbl_ref[i], vc_tbl_ref[i + 1])) |
| 345 | && (adc_temp <= vc_tbl_ref[i])) |
| 346 | return i + 1; |
| 347 | } |
| 348 | /* |
| 349 | * For some reason authors of the driver didn't presume that we can |
| 350 | * end up here. It might be OK, but might be not, no one knows for |
| 351 | * sure. Go check your battery, is it on fire? |
| 352 | */ |
| 353 | WARN_ON(1); |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | static int da9052_bat_read_capacity(struct da9052_battery *bat, int *capacity) |
| 358 | { |
| 359 | int adc_temp; |
| 360 | int bat_voltage; |
| 361 | int vbat_lower; |
| 362 | int vbat_upper; |
| 363 | int level_upper; |
| 364 | int level_lower; |
| 365 | int ret; |
| 366 | int flag; |
| 367 | int i = 0; |
| 368 | int j; |
| 369 | |
| 370 | ret = da9052_bat_read_volt(bat, &bat_voltage); |
| 371 | if (ret < 0) |
| 372 | return ret; |
| 373 | |
| 374 | adc_temp = da9052_adc_read_temp(bat->da9052); |
| 375 | if (adc_temp < 0) |
| 376 | return adc_temp; |
| 377 | |
| 378 | i = da9052_determine_vc_tbl_index(adc_temp); |
| 379 | |
| 380 | if (bat_voltage >= vc_tbl[i][0][0]) { |
| 381 | *capacity = 100; |
| 382 | return 0; |
| 383 | } |
| 384 | if (bat_voltage <= vc_tbl[i][DA9052_VC_TBL_SZ - 1][0]) { |
| 385 | *capacity = 0; |
| 386 | return 0; |
| 387 | } |
| 388 | flag = 0; |
| 389 | |
| 390 | for (j = 0; j < (DA9052_VC_TBL_SZ-1); j++) { |
| 391 | if ((bat_voltage <= vc_tbl[i][j][0]) && |
| 392 | (bat_voltage >= vc_tbl[i][j + 1][0])) { |
| 393 | vbat_upper = vc_tbl[i][j][0]; |
| 394 | vbat_lower = vc_tbl[i][j + 1][0]; |
| 395 | level_upper = vc_tbl[i][j][1]; |
| 396 | level_lower = vc_tbl[i][j + 1][1]; |
| 397 | flag = 1; |
| 398 | break; |
| 399 | } |
| 400 | } |
| 401 | if (!flag) |
| 402 | return -EIO; |
| 403 | |
| 404 | *capacity = da9052_bat_interpolate(vbat_lower, vbat_upper, level_lower, |
| 405 | level_upper, bat_voltage); |
| 406 | |
| 407 | return 0; |
| 408 | } |
| 409 | |
| 410 | static int da9052_bat_check_health(struct da9052_battery *bat, int *health) |
| 411 | { |
| 412 | int ret; |
| 413 | int bat_illegal; |
| 414 | int capacity; |
| 415 | |
| 416 | ret = da9052_bat_check_presence(bat, &bat_illegal); |
| 417 | if (ret < 0) |
| 418 | return ret; |
| 419 | |
| 420 | if (bat_illegal) { |
| 421 | bat->health = POWER_SUPPLY_HEALTH_UNKNOWN; |
| 422 | return 0; |
| 423 | } |
| 424 | |
| 425 | if (bat->health != POWER_SUPPLY_HEALTH_OVERHEAT) { |
| 426 | ret = da9052_bat_read_capacity(bat, &capacity); |
| 427 | if (ret < 0) |
| 428 | return ret; |
| 429 | if (capacity < DA9052_BAT_LOW_CAP) |
| 430 | bat->health = POWER_SUPPLY_HEALTH_DEAD; |
| 431 | else |
| 432 | bat->health = POWER_SUPPLY_HEALTH_GOOD; |
| 433 | } |
| 434 | |
| 435 | *health = bat->health; |
| 436 | |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | static irqreturn_t da9052_bat_irq(int irq, void *data) |
| 441 | { |
| 442 | struct da9052_battery *bat = data; |
| 443 | int virq; |
| 444 | |
| 445 | virq = regmap_irq_get_virq(bat->da9052->irq_data, irq); |
| 446 | irq -= virq; |
| 447 | |
| 448 | if (irq == DA9052_IRQ_CHGEND) |
| 449 | bat->status = POWER_SUPPLY_STATUS_FULL; |
| 450 | else |
| 451 | da9052_bat_check_status(bat, NULL); |
| 452 | |
| 453 | if (irq == DA9052_IRQ_CHGEND || irq == DA9052_IRQ_DCIN || |
| 454 | irq == DA9052_IRQ_VBUS || irq == DA9052_IRQ_TBAT) { |
| 455 | power_supply_changed(&bat->psy); |
| 456 | } |
| 457 | |
| 458 | return IRQ_HANDLED; |
| 459 | } |
| 460 | |
| 461 | static int da9052_USB_current_notifier(struct notifier_block *nb, |
| 462 | unsigned long events, void *data) |
| 463 | { |
| 464 | u8 row; |
| 465 | u8 col; |
| 466 | int *current_mA = data; |
| 467 | int ret; |
| 468 | struct da9052_battery *bat = container_of(nb, struct da9052_battery, |
| 469 | nb); |
| 470 | |
| 471 | if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) |
| 472 | return -EPERM; |
| 473 | |
| 474 | ret = da9052_reg_read(bat->da9052, DA9052_CHGBUCK_REG); |
| 475 | if (ret & DA9052_CHG_USB_ILIM_MASK) |
| 476 | return -EPERM; |
| 477 | |
| 478 | if (bat->da9052->chip_id == DA9052) |
| 479 | row = 0; |
| 480 | else |
| 481 | row = 1; |
| 482 | |
| 483 | if (*current_mA < da9052_chg_current_lim[row][0] || |
| 484 | *current_mA > da9052_chg_current_lim[row][DA9052_CHG_LIM_COLS - 1]) |
| 485 | return -EINVAL; |
| 486 | |
| 487 | for (col = 0; col <= DA9052_CHG_LIM_COLS - 1 ; col++) { |
| 488 | if (*current_mA <= da9052_chg_current_lim[row][col]) |
| 489 | break; |
| 490 | } |
| 491 | |
| 492 | return da9052_reg_update(bat->da9052, DA9052_ISET_REG, |
| 493 | DA9052_ISET_USB_MASK, col); |
| 494 | } |
| 495 | |
| 496 | static int da9052_bat_get_property(struct power_supply *psy, |
| 497 | enum power_supply_property psp, |
| 498 | union power_supply_propval *val) |
| 499 | { |
| 500 | int ret; |
| 501 | int illegal; |
| 502 | struct da9052_battery *bat = container_of(psy, struct da9052_battery, |
| 503 | psy); |
| 504 | |
| 505 | ret = da9052_bat_check_presence(bat, &illegal); |
| 506 | if (ret < 0) |
| 507 | return ret; |
| 508 | |
| 509 | if (illegal && psp != POWER_SUPPLY_PROP_PRESENT) |
| 510 | return -ENODEV; |
| 511 | |
| 512 | switch (psp) { |
| 513 | case POWER_SUPPLY_PROP_STATUS: |
| 514 | ret = da9052_bat_check_status(bat, &val->intval); |
| 515 | break; |
| 516 | case POWER_SUPPLY_PROP_ONLINE: |
| 517 | val->intval = |
| 518 | (bat->charger_type == DA9052_NOCHARGER) ? 0 : 1; |
| 519 | break; |
| 520 | case POWER_SUPPLY_PROP_PRESENT: |
| 521 | ret = da9052_bat_check_presence(bat, &val->intval); |
| 522 | break; |
| 523 | case POWER_SUPPLY_PROP_HEALTH: |
| 524 | ret = da9052_bat_check_health(bat, &val->intval); |
| 525 | break; |
| 526 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
| 527 | val->intval = DA9052_BAT_CUTOFF_VOLT * 1000; |
| 528 | break; |
| 529 | case POWER_SUPPLY_PROP_VOLTAGE_AVG: |
| 530 | ret = da9052_bat_read_volt(bat, &val->intval); |
| 531 | break; |
| 532 | case POWER_SUPPLY_PROP_CURRENT_AVG: |
| 533 | ret = da9052_read_chg_current(bat, &val->intval); |
| 534 | break; |
| 535 | case POWER_SUPPLY_PROP_CAPACITY: |
| 536 | ret = da9052_bat_read_capacity(bat, &val->intval); |
| 537 | break; |
| 538 | case POWER_SUPPLY_PROP_TEMP: |
| 539 | val->intval = da9052_adc_read_temp(bat->da9052); |
| 540 | ret = val->intval; |
| 541 | break; |
| 542 | case POWER_SUPPLY_PROP_TECHNOLOGY: |
| 543 | val->intval = POWER_SUPPLY_TECHNOLOGY_LION; |
| 544 | break; |
| 545 | default: |
| 546 | return -EINVAL; |
| 547 | } |
| 548 | return ret; |
| 549 | } |
| 550 | |
| 551 | static enum power_supply_property da9052_bat_props[] = { |
| 552 | POWER_SUPPLY_PROP_STATUS, |
| 553 | POWER_SUPPLY_PROP_ONLINE, |
| 554 | POWER_SUPPLY_PROP_PRESENT, |
| 555 | POWER_SUPPLY_PROP_HEALTH, |
| 556 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
| 557 | POWER_SUPPLY_PROP_VOLTAGE_AVG, |
| 558 | POWER_SUPPLY_PROP_CURRENT_AVG, |
| 559 | POWER_SUPPLY_PROP_CAPACITY, |
| 560 | POWER_SUPPLY_PROP_TEMP, |
| 561 | POWER_SUPPLY_PROP_TECHNOLOGY, |
| 562 | }; |
| 563 | |
| 564 | static struct power_supply template_battery = { |
| 565 | .name = "da9052-bat", |
| 566 | .type = POWER_SUPPLY_TYPE_BATTERY, |
| 567 | .properties = da9052_bat_props, |
| 568 | .num_properties = ARRAY_SIZE(da9052_bat_props), |
| 569 | .get_property = da9052_bat_get_property, |
| 570 | }; |
| 571 | |
| 572 | static char *da9052_bat_irqs[] = { |
| 573 | "BATT TEMP", |
| 574 | "DCIN DET", |
| 575 | "DCIN REM", |
| 576 | "VBUS DET", |
| 577 | "VBUS REM", |
| 578 | "CHG END", |
| 579 | }; |
| 580 | |
| 581 | static int da9052_bat_irq_bits[] = { |
| 582 | DA9052_IRQ_TBAT, |
| 583 | DA9052_IRQ_DCIN, |
| 584 | DA9052_IRQ_DCINREM, |
| 585 | DA9052_IRQ_VBUS, |
| 586 | DA9052_IRQ_VBUSREM, |
| 587 | DA9052_IRQ_CHGEND, |
| 588 | }; |
| 589 | |
| 590 | static s32 da9052_bat_probe(struct platform_device *pdev) |
| 591 | { |
| 592 | struct da9052_pdata *pdata; |
| 593 | struct da9052_battery *bat; |
| 594 | int ret; |
| 595 | int i; |
| 596 | |
| 597 | bat = devm_kzalloc(&pdev->dev, sizeof(struct da9052_battery), |
| 598 | GFP_KERNEL); |
| 599 | if (!bat) |
| 600 | return -ENOMEM; |
| 601 | |
| 602 | bat->da9052 = dev_get_drvdata(pdev->dev.parent); |
| 603 | bat->psy = template_battery; |
| 604 | bat->charger_type = DA9052_NOCHARGER; |
| 605 | bat->status = POWER_SUPPLY_STATUS_UNKNOWN; |
| 606 | bat->health = POWER_SUPPLY_HEALTH_UNKNOWN; |
| 607 | bat->nb.notifier_call = da9052_USB_current_notifier; |
| 608 | |
| 609 | pdata = bat->da9052->dev->platform_data; |
| 610 | if (pdata != NULL && pdata->use_for_apm) |
| 611 | bat->psy.use_for_apm = pdata->use_for_apm; |
| 612 | else |
| 613 | bat->psy.use_for_apm = 1; |
| 614 | |
| 615 | for (i = 0; i < ARRAY_SIZE(da9052_bat_irqs); i++) { |
| 616 | ret = da9052_request_irq(bat->da9052, |
| 617 | da9052_bat_irq_bits[i], da9052_bat_irqs[i], |
| 618 | da9052_bat_irq, bat); |
| 619 | |
| 620 | if (ret != 0) { |
| 621 | dev_err(bat->da9052->dev, |
| 622 | "DA9052 failed to request %s IRQ: %d\n", |
| 623 | da9052_bat_irqs[i], ret); |
| 624 | goto err; |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | ret = power_supply_register(&pdev->dev, &bat->psy); |
| 629 | if (ret) |
| 630 | goto err; |
| 631 | |
| 632 | platform_set_drvdata(pdev, bat); |
| 633 | return 0; |
| 634 | |
| 635 | err: |
| 636 | while (--i >= 0) |
| 637 | da9052_free_irq(bat->da9052, da9052_bat_irq_bits[i], bat); |
| 638 | |
| 639 | return ret; |
| 640 | } |
| 641 | static int da9052_bat_remove(struct platform_device *pdev) |
| 642 | { |
| 643 | int i; |
| 644 | struct da9052_battery *bat = platform_get_drvdata(pdev); |
| 645 | |
| 646 | for (i = 0; i < ARRAY_SIZE(da9052_bat_irqs); i++) |
| 647 | da9052_free_irq(bat->da9052, da9052_bat_irq_bits[i], bat); |
| 648 | |
| 649 | power_supply_unregister(&bat->psy); |
| 650 | |
| 651 | return 0; |
| 652 | } |
| 653 | |
| 654 | static struct platform_driver da9052_bat_driver = { |
| 655 | .probe = da9052_bat_probe, |
| 656 | .remove = da9052_bat_remove, |
| 657 | .driver = { |
| 658 | .name = "da9052-bat", |
| 659 | .owner = THIS_MODULE, |
| 660 | }, |
| 661 | }; |
| 662 | module_platform_driver(da9052_bat_driver); |
| 663 | |
| 664 | MODULE_DESCRIPTION("DA9052 BAT Device Driver"); |
| 665 | MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); |
| 666 | MODULE_LICENSE("GPL"); |
| 667 | MODULE_ALIAS("platform:da9052-bat"); |