1 /* 2 * Device access 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/device.h> 15 #include <linux/delay.h> 16 #include <linux/input.h> 17 #include <linux/interrupt.h> 18 #include <linux/mfd/core.h> 19 #include <linux/slab.h> 20 #include <linux/module.h> 21 22 #include <linux/mfd/da9052/da9052.h> 23 #include <linux/mfd/da9052/pdata.h> 24 #include <linux/mfd/da9052/reg.h> 25 26 static bool da9052_reg_readable(struct device *dev, unsigned int reg) 27 { 28 switch (reg) { 29 case DA9052_PAGE0_CON_REG: 30 case DA9052_STATUS_A_REG: 31 case DA9052_STATUS_B_REG: 32 case DA9052_STATUS_C_REG: 33 case DA9052_STATUS_D_REG: 34 case DA9052_EVENT_A_REG: 35 case DA9052_EVENT_B_REG: 36 case DA9052_EVENT_C_REG: 37 case DA9052_EVENT_D_REG: 38 case DA9052_FAULTLOG_REG: 39 case DA9052_IRQ_MASK_A_REG: 40 case DA9052_IRQ_MASK_B_REG: 41 case DA9052_IRQ_MASK_C_REG: 42 case DA9052_IRQ_MASK_D_REG: 43 case DA9052_CONTROL_A_REG: 44 case DA9052_CONTROL_B_REG: 45 case DA9052_CONTROL_C_REG: 46 case DA9052_CONTROL_D_REG: 47 case DA9052_PDDIS_REG: 48 case DA9052_INTERFACE_REG: 49 case DA9052_RESET_REG: 50 case DA9052_GPIO_0_1_REG: 51 case DA9052_GPIO_2_3_REG: 52 case DA9052_GPIO_4_5_REG: 53 case DA9052_GPIO_6_7_REG: 54 case DA9052_GPIO_14_15_REG: 55 case DA9052_ID_0_1_REG: 56 case DA9052_ID_2_3_REG: 57 case DA9052_ID_4_5_REG: 58 case DA9052_ID_6_7_REG: 59 case DA9052_ID_8_9_REG: 60 case DA9052_ID_10_11_REG: 61 case DA9052_ID_12_13_REG: 62 case DA9052_ID_14_15_REG: 63 case DA9052_ID_16_17_REG: 64 case DA9052_ID_18_19_REG: 65 case DA9052_ID_20_21_REG: 66 case DA9052_SEQ_STATUS_REG: 67 case DA9052_SEQ_A_REG: 68 case DA9052_SEQ_B_REG: 69 case DA9052_SEQ_TIMER_REG: 70 case DA9052_BUCKA_REG: 71 case DA9052_BUCKB_REG: 72 case DA9052_BUCKCORE_REG: 73 case DA9052_BUCKPRO_REG: 74 case DA9052_BUCKMEM_REG: 75 case DA9052_BUCKPERI_REG: 76 case DA9052_LDO1_REG: 77 case DA9052_LDO2_REG: 78 case DA9052_LDO3_REG: 79 case DA9052_LDO4_REG: 80 case DA9052_LDO5_REG: 81 case DA9052_LDO6_REG: 82 case DA9052_LDO7_REG: 83 case DA9052_LDO8_REG: 84 case DA9052_LDO9_REG: 85 case DA9052_LDO10_REG: 86 case DA9052_SUPPLY_REG: 87 case DA9052_PULLDOWN_REG: 88 case DA9052_CHGBUCK_REG: 89 case DA9052_WAITCONT_REG: 90 case DA9052_ISET_REG: 91 case DA9052_BATCHG_REG: 92 case DA9052_CHG_CONT_REG: 93 case DA9052_INPUT_CONT_REG: 94 case DA9052_CHG_TIME_REG: 95 case DA9052_BBAT_CONT_REG: 96 case DA9052_BOOST_REG: 97 case DA9052_LED_CONT_REG: 98 case DA9052_LEDMIN123_REG: 99 case DA9052_LED1_CONF_REG: 100 case DA9052_LED2_CONF_REG: 101 case DA9052_LED3_CONF_REG: 102 case DA9052_LED1CONT_REG: 103 case DA9052_LED2CONT_REG: 104 case DA9052_LED3CONT_REG: 105 case DA9052_LED_CONT_4_REG: 106 case DA9052_LED_CONT_5_REG: 107 case DA9052_ADC_MAN_REG: 108 case DA9052_ADC_CONT_REG: 109 case DA9052_ADC_RES_L_REG: 110 case DA9052_ADC_RES_H_REG: 111 case DA9052_VDD_RES_REG: 112 case DA9052_VDD_MON_REG: 113 case DA9052_ICHG_AV_REG: 114 case DA9052_ICHG_THD_REG: 115 case DA9052_ICHG_END_REG: 116 case DA9052_TBAT_RES_REG: 117 case DA9052_TBAT_HIGHP_REG: 118 case DA9052_TBAT_HIGHN_REG: 119 case DA9052_TBAT_LOW_REG: 120 case DA9052_T_OFFSET_REG: 121 case DA9052_ADCIN4_RES_REG: 122 case DA9052_AUTO4_HIGH_REG: 123 case DA9052_AUTO4_LOW_REG: 124 case DA9052_ADCIN5_RES_REG: 125 case DA9052_AUTO5_HIGH_REG: 126 case DA9052_AUTO5_LOW_REG: 127 case DA9052_ADCIN6_RES_REG: 128 case DA9052_AUTO6_HIGH_REG: 129 case DA9052_AUTO6_LOW_REG: 130 case DA9052_TJUNC_RES_REG: 131 case DA9052_TSI_CONT_A_REG: 132 case DA9052_TSI_CONT_B_REG: 133 case DA9052_TSI_X_MSB_REG: 134 case DA9052_TSI_Y_MSB_REG: 135 case DA9052_TSI_LSB_REG: 136 case DA9052_TSI_Z_MSB_REG: 137 case DA9052_COUNT_S_REG: 138 case DA9052_COUNT_MI_REG: 139 case DA9052_COUNT_H_REG: 140 case DA9052_COUNT_D_REG: 141 case DA9052_COUNT_MO_REG: 142 case DA9052_COUNT_Y_REG: 143 case DA9052_ALARM_MI_REG: 144 case DA9052_ALARM_H_REG: 145 case DA9052_ALARM_D_REG: 146 case DA9052_ALARM_MO_REG: 147 case DA9052_ALARM_Y_REG: 148 case DA9052_SECOND_A_REG: 149 case DA9052_SECOND_B_REG: 150 case DA9052_SECOND_C_REG: 151 case DA9052_SECOND_D_REG: 152 case DA9052_PAGE1_CON_REG: 153 return true; 154 default: 155 return false; 156 } 157 } 158 159 static bool da9052_reg_writeable(struct device *dev, unsigned int reg) 160 { 161 switch (reg) { 162 case DA9052_PAGE0_CON_REG: 163 case DA9052_EVENT_A_REG: 164 case DA9052_EVENT_B_REG: 165 case DA9052_EVENT_C_REG: 166 case DA9052_EVENT_D_REG: 167 case DA9052_IRQ_MASK_A_REG: 168 case DA9052_IRQ_MASK_B_REG: 169 case DA9052_IRQ_MASK_C_REG: 170 case DA9052_IRQ_MASK_D_REG: 171 case DA9052_CONTROL_A_REG: 172 case DA9052_CONTROL_B_REG: 173 case DA9052_CONTROL_C_REG: 174 case DA9052_CONTROL_D_REG: 175 case DA9052_PDDIS_REG: 176 case DA9052_RESET_REG: 177 case DA9052_GPIO_0_1_REG: 178 case DA9052_GPIO_2_3_REG: 179 case DA9052_GPIO_4_5_REG: 180 case DA9052_GPIO_6_7_REG: 181 case DA9052_GPIO_14_15_REG: 182 case DA9052_ID_0_1_REG: 183 case DA9052_ID_2_3_REG: 184 case DA9052_ID_4_5_REG: 185 case DA9052_ID_6_7_REG: 186 case DA9052_ID_8_9_REG: 187 case DA9052_ID_10_11_REG: 188 case DA9052_ID_12_13_REG: 189 case DA9052_ID_14_15_REG: 190 case DA9052_ID_16_17_REG: 191 case DA9052_ID_18_19_REG: 192 case DA9052_ID_20_21_REG: 193 case DA9052_SEQ_STATUS_REG: 194 case DA9052_SEQ_A_REG: 195 case DA9052_SEQ_B_REG: 196 case DA9052_SEQ_TIMER_REG: 197 case DA9052_BUCKA_REG: 198 case DA9052_BUCKB_REG: 199 case DA9052_BUCKCORE_REG: 200 case DA9052_BUCKPRO_REG: 201 case DA9052_BUCKMEM_REG: 202 case DA9052_BUCKPERI_REG: 203 case DA9052_LDO1_REG: 204 case DA9052_LDO2_REG: 205 case DA9052_LDO3_REG: 206 case DA9052_LDO4_REG: 207 case DA9052_LDO5_REG: 208 case DA9052_LDO6_REG: 209 case DA9052_LDO7_REG: 210 case DA9052_LDO8_REG: 211 case DA9052_LDO9_REG: 212 case DA9052_LDO10_REG: 213 case DA9052_SUPPLY_REG: 214 case DA9052_PULLDOWN_REG: 215 case DA9052_CHGBUCK_REG: 216 case DA9052_WAITCONT_REG: 217 case DA9052_ISET_REG: 218 case DA9052_BATCHG_REG: 219 case DA9052_CHG_CONT_REG: 220 case DA9052_INPUT_CONT_REG: 221 case DA9052_BBAT_CONT_REG: 222 case DA9052_BOOST_REG: 223 case DA9052_LED_CONT_REG: 224 case DA9052_LEDMIN123_REG: 225 case DA9052_LED1_CONF_REG: 226 case DA9052_LED2_CONF_REG: 227 case DA9052_LED3_CONF_REG: 228 case DA9052_LED1CONT_REG: 229 case DA9052_LED2CONT_REG: 230 case DA9052_LED3CONT_REG: 231 case DA9052_LED_CONT_4_REG: 232 case DA9052_LED_CONT_5_REG: 233 case DA9052_ADC_MAN_REG: 234 case DA9052_ADC_CONT_REG: 235 case DA9052_ADC_RES_L_REG: 236 case DA9052_ADC_RES_H_REG: 237 case DA9052_VDD_RES_REG: 238 case DA9052_VDD_MON_REG: 239 case DA9052_ICHG_THD_REG: 240 case DA9052_ICHG_END_REG: 241 case DA9052_TBAT_HIGHP_REG: 242 case DA9052_TBAT_HIGHN_REG: 243 case DA9052_TBAT_LOW_REG: 244 case DA9052_T_OFFSET_REG: 245 case DA9052_AUTO4_HIGH_REG: 246 case DA9052_AUTO4_LOW_REG: 247 case DA9052_AUTO5_HIGH_REG: 248 case DA9052_AUTO5_LOW_REG: 249 case DA9052_AUTO6_HIGH_REG: 250 case DA9052_AUTO6_LOW_REG: 251 case DA9052_TSI_CONT_A_REG: 252 case DA9052_TSI_CONT_B_REG: 253 case DA9052_COUNT_S_REG: 254 case DA9052_COUNT_MI_REG: 255 case DA9052_COUNT_H_REG: 256 case DA9052_COUNT_D_REG: 257 case DA9052_COUNT_MO_REG: 258 case DA9052_COUNT_Y_REG: 259 case DA9052_ALARM_MI_REG: 260 case DA9052_ALARM_H_REG: 261 case DA9052_ALARM_D_REG: 262 case DA9052_ALARM_MO_REG: 263 case DA9052_ALARM_Y_REG: 264 case DA9052_PAGE1_CON_REG: 265 return true; 266 default: 267 return false; 268 } 269 } 270 271 static bool da9052_reg_volatile(struct device *dev, unsigned int reg) 272 { 273 switch (reg) { 274 case DA9052_STATUS_A_REG: 275 case DA9052_STATUS_B_REG: 276 case DA9052_STATUS_C_REG: 277 case DA9052_STATUS_D_REG: 278 case DA9052_EVENT_A_REG: 279 case DA9052_EVENT_B_REG: 280 case DA9052_EVENT_C_REG: 281 case DA9052_EVENT_D_REG: 282 case DA9052_FAULTLOG_REG: 283 case DA9052_CHG_TIME_REG: 284 case DA9052_ADC_RES_L_REG: 285 case DA9052_ADC_RES_H_REG: 286 case DA9052_VDD_RES_REG: 287 case DA9052_ICHG_AV_REG: 288 case DA9052_TBAT_RES_REG: 289 case DA9052_ADCIN4_RES_REG: 290 case DA9052_ADCIN5_RES_REG: 291 case DA9052_ADCIN6_RES_REG: 292 case DA9052_TJUNC_RES_REG: 293 case DA9052_TSI_X_MSB_REG: 294 case DA9052_TSI_Y_MSB_REG: 295 case DA9052_TSI_LSB_REG: 296 case DA9052_TSI_Z_MSB_REG: 297 case DA9052_COUNT_S_REG: 298 case DA9052_COUNT_MI_REG: 299 case DA9052_COUNT_H_REG: 300 case DA9052_COUNT_D_REG: 301 case DA9052_COUNT_MO_REG: 302 case DA9052_COUNT_Y_REG: 303 case DA9052_ALARM_MI_REG: 304 return true; 305 default: 306 return false; 307 } 308 } 309 310 /* 311 * TBAT look-up table is computed from the R90 reg (8 bit register) 312 * reading as below. The battery temperature is in milliCentigrade 313 * TBAT = (1/(t1+1/298) - 273) * 1000 mC 314 * where t1 = (1/B)* ln(( ADCval * 2.5)/(R25*ITBAT*255)) 315 * Default values are R25 = 10e3, B = 3380, ITBAT = 50e-6 316 * Example: 317 * R25=10E3, B=3380, ITBAT=50e-6, ADCVAL=62d calculates 318 * TBAT = 20015 mili degrees Centrigrade 319 * 320 */ 321 static const int32_t tbat_lookup[255] = { 322 183258, 144221, 124334, 111336, 101826, 94397, 88343, 83257, 323 78889, 75071, 71688, 68656, 65914, 63414, 61120, 59001, 324 570366, 55204, 53490, 51881, 50364, 48931, 47574, 46285, 325 45059, 43889, 42772, 41703, 40678, 39694, 38748, 37838, 326 36961, 36115, 35297, 34507, 33743, 33002, 32284, 31588, 327 30911, 30254, 29615, 28994, 28389, 27799, 27225, 26664, 328 26117, 25584, 25062, 24553, 24054, 23567, 23091, 22624, 329 22167, 21719, 21281, 20851, 20429, 20015, 19610, 19211, 330 18820, 18436, 18058, 17688, 17323, 16965, 16612, 16266, 331 15925, 15589, 15259, 14933, 14613, 14298, 13987, 13681, 332 13379, 13082, 12788, 12499, 12214, 11933, 11655, 11382, 333 11112, 10845, 10582, 10322, 10066, 9812, 9562, 9315, 334 9071, 8830, 8591, 8356, 8123, 7893, 7665, 7440, 335 7218, 6998, 6780, 6565, 6352, 6141, 5933, 5726, 336 5522, 5320, 5120, 4922, 4726, 4532, 4340, 4149, 337 3961, 3774, 3589, 3406, 3225, 3045, 2867, 2690, 338 2516, 2342, 2170, 2000, 1831, 1664, 1498, 1334, 339 1171, 1009, 849, 690, 532, 376, 221, 67, 340 -84, -236, -386, -535, -683, -830, -975, -1119, 341 -1263, -1405, -1546, -1686, -1825, -1964, -2101, -2237, 342 -2372, -2506, -2639, -2771, -2902, -3033, -3162, -3291, 343 -3418, -3545, -3671, -3796, -3920, -4044, -4166, -4288, 344 -4409, -4529, -4649, -4767, -4885, -5002, -5119, -5235, 345 -5349, -5464, -5577, -5690, -5802, -5913, -6024, -6134, 346 -6244, -6352, -6461, -6568, -6675, -6781, -6887, -6992, 347 -7096, -7200, -7303, -7406, -7508, -7609, -7710, -7810, 348 -7910, -8009, -8108, -8206, -8304, -8401, -8497, -8593, 349 -8689, -8784, -8878, -8972, -9066, -9159, -9251, -9343, 350 -9435, -9526, -9617, -9707, -9796, -9886, -9975, -10063, 351 -10151, -10238, -10325, -10412, -10839, -10923, -11007, -11090, 352 -11173, -11256, -11338, -11420, -11501, -11583, -11663, -11744, 353 -11823, -11903, -11982 354 }; 355 356 static const u8 chan_mux[DA9052_ADC_VBBAT + 1] = { 357 [DA9052_ADC_VDDOUT] = DA9052_ADC_MAN_MUXSEL_VDDOUT, 358 [DA9052_ADC_ICH] = DA9052_ADC_MAN_MUXSEL_ICH, 359 [DA9052_ADC_TBAT] = DA9052_ADC_MAN_MUXSEL_TBAT, 360 [DA9052_ADC_VBAT] = DA9052_ADC_MAN_MUXSEL_VBAT, 361 [DA9052_ADC_IN4] = DA9052_ADC_MAN_MUXSEL_AD4, 362 [DA9052_ADC_IN5] = DA9052_ADC_MAN_MUXSEL_AD5, 363 [DA9052_ADC_IN6] = DA9052_ADC_MAN_MUXSEL_AD6, 364 [DA9052_ADC_VBBAT] = DA9052_ADC_MAN_MUXSEL_VBBAT 365 }; 366 367 int da9052_adc_manual_read(struct da9052 *da9052, unsigned char channel) 368 { 369 int ret; 370 unsigned short calc_data; 371 unsigned short data; 372 unsigned char mux_sel; 373 374 if (channel > DA9052_ADC_VBBAT) 375 return -EINVAL; 376 377 mutex_lock(&da9052->auxadc_lock); 378 379 /* Channel gets activated on enabling the Conversion bit */ 380 mux_sel = chan_mux[channel] | DA9052_ADC_MAN_MAN_CONV; 381 382 ret = da9052_reg_write(da9052, DA9052_ADC_MAN_REG, mux_sel); 383 if (ret < 0) 384 goto err; 385 386 /* Wait for an interrupt */ 387 if (!wait_for_completion_timeout(&da9052->done, 388 msecs_to_jiffies(500))) { 389 dev_err(da9052->dev, 390 "timeout waiting for ADC conversion interrupt\n"); 391 ret = -ETIMEDOUT; 392 goto err; 393 } 394 395 ret = da9052_reg_read(da9052, DA9052_ADC_RES_H_REG); 396 if (ret < 0) 397 goto err; 398 399 calc_data = (unsigned short)ret; 400 data = calc_data << 2; 401 402 ret = da9052_reg_read(da9052, DA9052_ADC_RES_L_REG); 403 if (ret < 0) 404 goto err; 405 406 calc_data = (unsigned short)(ret & DA9052_ADC_RES_LSB); 407 data |= calc_data; 408 409 ret = data; 410 411 err: 412 mutex_unlock(&da9052->auxadc_lock); 413 return ret; 414 } 415 EXPORT_SYMBOL_GPL(da9052_adc_manual_read); 416 417 int da9052_adc_read_temp(struct da9052 *da9052) 418 { 419 int tbat; 420 421 tbat = da9052_reg_read(da9052, DA9052_TBAT_RES_REG); 422 if (tbat <= 0) 423 return tbat; 424 425 /* ARRAY_SIZE check is not needed since TBAT is a 8-bit register */ 426 return tbat_lookup[tbat - 1]; 427 } 428 EXPORT_SYMBOL_GPL(da9052_adc_read_temp); 429 430 static struct mfd_cell da9052_subdev_info[] = { 431 { 432 .name = "da9052-regulator", 433 .id = 1, 434 }, 435 { 436 .name = "da9052-regulator", 437 .id = 2, 438 }, 439 { 440 .name = "da9052-regulator", 441 .id = 3, 442 }, 443 { 444 .name = "da9052-regulator", 445 .id = 4, 446 }, 447 { 448 .name = "da9052-regulator", 449 .id = 5, 450 }, 451 { 452 .name = "da9052-regulator", 453 .id = 6, 454 }, 455 { 456 .name = "da9052-regulator", 457 .id = 7, 458 }, 459 { 460 .name = "da9052-regulator", 461 .id = 8, 462 }, 463 { 464 .name = "da9052-regulator", 465 .id = 9, 466 }, 467 { 468 .name = "da9052-regulator", 469 .id = 10, 470 }, 471 { 472 .name = "da9052-regulator", 473 .id = 11, 474 }, 475 { 476 .name = "da9052-regulator", 477 .id = 12, 478 }, 479 { 480 .name = "da9052-regulator", 481 .id = 13, 482 }, 483 { 484 .name = "da9052-regulator", 485 .id = 14, 486 }, 487 { 488 .name = "da9052-onkey", 489 }, 490 { 491 .name = "da9052-rtc", 492 }, 493 { 494 .name = "da9052-gpio", 495 }, 496 { 497 .name = "da9052-hwmon", 498 }, 499 { 500 .name = "da9052-leds", 501 }, 502 { 503 .name = "da9052-wled1", 504 }, 505 { 506 .name = "da9052-wled2", 507 }, 508 { 509 .name = "da9052-wled3", 510 }, 511 { 512 .name = "da9052-tsi", 513 }, 514 { 515 .name = "da9052-bat", 516 }, 517 { 518 .name = "da9052-watchdog", 519 }, 520 }; 521 522 struct regmap_config da9052_regmap_config = { 523 .reg_bits = 8, 524 .val_bits = 8, 525 526 .cache_type = REGCACHE_RBTREE, 527 528 .max_register = DA9052_PAGE1_CON_REG, 529 .readable_reg = da9052_reg_readable, 530 .writeable_reg = da9052_reg_writeable, 531 .volatile_reg = da9052_reg_volatile, 532 }; 533 EXPORT_SYMBOL_GPL(da9052_regmap_config); 534 535 int da9052_device_init(struct da9052 *da9052, u8 chip_id) 536 { 537 struct da9052_pdata *pdata = da9052->dev->platform_data; 538 int ret; 539 540 mutex_init(&da9052->auxadc_lock); 541 init_completion(&da9052->done); 542 543 if (pdata && pdata->init != NULL) 544 pdata->init(da9052); 545 546 da9052->chip_id = chip_id; 547 548 ret = da9052_irq_init(da9052); 549 if (ret != 0) { 550 dev_err(da9052->dev, "da9052_irq_init failed: %d\n", ret); 551 return ret; 552 } 553 554 ret = mfd_add_devices(da9052->dev, -1, da9052_subdev_info, 555 ARRAY_SIZE(da9052_subdev_info), NULL, 0, NULL); 556 if (ret) { 557 dev_err(da9052->dev, "mfd_add_devices failed: %d\n", ret); 558 goto err; 559 } 560 561 return 0; 562 563 err: 564 da9052_irq_exit(da9052); 565 566 return ret; 567 } 568 569 void da9052_device_exit(struct da9052 *da9052) 570 { 571 mfd_remove_devices(da9052->dev); 572 da9052_irq_exit(da9052); 573 } 574 575 MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); 576 MODULE_DESCRIPTION("DA9052 MFD Core"); 577 MODULE_LICENSE("GPL"); 578