1 /* 2 * Copyright (C) ST-Ericsson SA 2010 3 * 4 * License Terms: GNU General Public License v2 5 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> 6 * Author: Rabin Vincent <rabin.vincent@stericsson.com> 7 * Author: Mattias Wallin <mattias.wallin@stericsson.com> 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/slab.h> 12 #include <linux/init.h> 13 #include <linux/irq.h> 14 #include <linux/irqdomain.h> 15 #include <linux/delay.h> 16 #include <linux/interrupt.h> 17 #include <linux/module.h> 18 #include <linux/platform_device.h> 19 #include <linux/mfd/core.h> 20 #include <linux/mfd/abx500.h> 21 #include <linux/mfd/abx500/ab8500.h> 22 #include <linux/mfd/abx500/ab8500-bm.h> 23 #include <linux/mfd/dbx500-prcmu.h> 24 #include <linux/regulator/ab8500.h> 25 #include <linux/of.h> 26 #include <linux/of_device.h> 27 28 /* 29 * Interrupt register offsets 30 * Bank : 0x0E 31 */ 32 #define AB8500_IT_SOURCE1_REG 0x00 33 #define AB8500_IT_SOURCE2_REG 0x01 34 #define AB8500_IT_SOURCE3_REG 0x02 35 #define AB8500_IT_SOURCE4_REG 0x03 36 #define AB8500_IT_SOURCE5_REG 0x04 37 #define AB8500_IT_SOURCE6_REG 0x05 38 #define AB8500_IT_SOURCE7_REG 0x06 39 #define AB8500_IT_SOURCE8_REG 0x07 40 #define AB9540_IT_SOURCE13_REG 0x0C 41 #define AB8500_IT_SOURCE19_REG 0x12 42 #define AB8500_IT_SOURCE20_REG 0x13 43 #define AB8500_IT_SOURCE21_REG 0x14 44 #define AB8500_IT_SOURCE22_REG 0x15 45 #define AB8500_IT_SOURCE23_REG 0x16 46 #define AB8500_IT_SOURCE24_REG 0x17 47 48 /* 49 * latch registers 50 */ 51 #define AB8500_IT_LATCH1_REG 0x20 52 #define AB8500_IT_LATCH2_REG 0x21 53 #define AB8500_IT_LATCH3_REG 0x22 54 #define AB8500_IT_LATCH4_REG 0x23 55 #define AB8500_IT_LATCH5_REG 0x24 56 #define AB8500_IT_LATCH6_REG 0x25 57 #define AB8500_IT_LATCH7_REG 0x26 58 #define AB8500_IT_LATCH8_REG 0x27 59 #define AB8500_IT_LATCH9_REG 0x28 60 #define AB8500_IT_LATCH10_REG 0x29 61 #define AB8500_IT_LATCH12_REG 0x2B 62 #define AB9540_IT_LATCH13_REG 0x2C 63 #define AB8500_IT_LATCH19_REG 0x32 64 #define AB8500_IT_LATCH20_REG 0x33 65 #define AB8500_IT_LATCH21_REG 0x34 66 #define AB8500_IT_LATCH22_REG 0x35 67 #define AB8500_IT_LATCH23_REG 0x36 68 #define AB8500_IT_LATCH24_REG 0x37 69 70 /* 71 * mask registers 72 */ 73 74 #define AB8500_IT_MASK1_REG 0x40 75 #define AB8500_IT_MASK2_REG 0x41 76 #define AB8500_IT_MASK3_REG 0x42 77 #define AB8500_IT_MASK4_REG 0x43 78 #define AB8500_IT_MASK5_REG 0x44 79 #define AB8500_IT_MASK6_REG 0x45 80 #define AB8500_IT_MASK7_REG 0x46 81 #define AB8500_IT_MASK8_REG 0x47 82 #define AB8500_IT_MASK9_REG 0x48 83 #define AB8500_IT_MASK10_REG 0x49 84 #define AB8500_IT_MASK11_REG 0x4A 85 #define AB8500_IT_MASK12_REG 0x4B 86 #define AB8500_IT_MASK13_REG 0x4C 87 #define AB8500_IT_MASK14_REG 0x4D 88 #define AB8500_IT_MASK15_REG 0x4E 89 #define AB8500_IT_MASK16_REG 0x4F 90 #define AB8500_IT_MASK17_REG 0x50 91 #define AB8500_IT_MASK18_REG 0x51 92 #define AB8500_IT_MASK19_REG 0x52 93 #define AB8500_IT_MASK20_REG 0x53 94 #define AB8500_IT_MASK21_REG 0x54 95 #define AB8500_IT_MASK22_REG 0x55 96 #define AB8500_IT_MASK23_REG 0x56 97 #define AB8500_IT_MASK24_REG 0x57 98 99 /* 100 * latch hierarchy registers 101 */ 102 #define AB8500_IT_LATCHHIER1_REG 0x60 103 #define AB8500_IT_LATCHHIER2_REG 0x61 104 #define AB8500_IT_LATCHHIER3_REG 0x62 105 106 #define AB8500_IT_LATCHHIER_NUM 3 107 108 #define AB8500_REV_REG 0x80 109 #define AB8500_IC_NAME_REG 0x82 110 #define AB8500_SWITCH_OFF_STATUS 0x00 111 112 #define AB8500_TURN_ON_STATUS 0x00 113 114 static bool no_bm; /* No battery management */ 115 module_param(no_bm, bool, S_IRUGO); 116 117 #define AB9540_MODEM_CTRL2_REG 0x23 118 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2) 119 120 /* 121 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt 122 * numbers are indexed into this array with (num / 8). The interupts are 123 * defined in linux/mfd/ab8500.h 124 * 125 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at 126 * offset 0. 127 */ 128 /* AB8500 support */ 129 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = { 130 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 131 }; 132 133 /* AB9540 support */ 134 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = { 135 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24, 136 }; 137 138 static const char ab8500_version_str[][7] = { 139 [AB8500_VERSION_AB8500] = "AB8500", 140 [AB8500_VERSION_AB8505] = "AB8505", 141 [AB8500_VERSION_AB9540] = "AB9540", 142 [AB8500_VERSION_AB8540] = "AB8540", 143 }; 144 145 static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data) 146 { 147 int ret; 148 149 ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1); 150 if (ret < 0) 151 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); 152 return ret; 153 } 154 155 static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask, 156 u8 data) 157 { 158 int ret; 159 160 ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 161 &mask, 1); 162 if (ret < 0) 163 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); 164 return ret; 165 } 166 167 static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr) 168 { 169 int ret; 170 u8 data; 171 172 ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1); 173 if (ret < 0) { 174 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); 175 return ret; 176 } 177 return (int)data; 178 } 179 180 static int ab8500_get_chip_id(struct device *dev) 181 { 182 struct ab8500 *ab8500; 183 184 if (!dev) 185 return -EINVAL; 186 ab8500 = dev_get_drvdata(dev->parent); 187 return ab8500 ? (int)ab8500->chip_id : -EINVAL; 188 } 189 190 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank, 191 u8 reg, u8 data) 192 { 193 int ret; 194 /* 195 * Put the u8 bank and u8 register together into a an u16. 196 * The bank on higher 8 bits and register in lower 8 bits. 197 * */ 198 u16 addr = ((u16)bank) << 8 | reg; 199 200 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data); 201 202 mutex_lock(&ab8500->lock); 203 204 ret = ab8500->write(ab8500, addr, data); 205 if (ret < 0) 206 dev_err(ab8500->dev, "failed to write reg %#x: %d\n", 207 addr, ret); 208 mutex_unlock(&ab8500->lock); 209 210 return ret; 211 } 212 213 static int ab8500_set_register(struct device *dev, u8 bank, 214 u8 reg, u8 value) 215 { 216 int ret; 217 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); 218 219 atomic_inc(&ab8500->transfer_ongoing); 220 ret = set_register_interruptible(ab8500, bank, reg, value); 221 atomic_dec(&ab8500->transfer_ongoing); 222 return ret; 223 } 224 225 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank, 226 u8 reg, u8 *value) 227 { 228 int ret; 229 /* put the u8 bank and u8 reg together into a an u16. 230 * bank on higher 8 bits and reg in lower */ 231 u16 addr = ((u16)bank) << 8 | reg; 232 233 mutex_lock(&ab8500->lock); 234 235 ret = ab8500->read(ab8500, addr); 236 if (ret < 0) 237 dev_err(ab8500->dev, "failed to read reg %#x: %d\n", 238 addr, ret); 239 else 240 *value = ret; 241 242 mutex_unlock(&ab8500->lock); 243 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret); 244 245 return ret; 246 } 247 248 static int ab8500_get_register(struct device *dev, u8 bank, 249 u8 reg, u8 *value) 250 { 251 int ret; 252 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); 253 254 atomic_inc(&ab8500->transfer_ongoing); 255 ret = get_register_interruptible(ab8500, bank, reg, value); 256 atomic_dec(&ab8500->transfer_ongoing); 257 return ret; 258 } 259 260 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank, 261 u8 reg, u8 bitmask, u8 bitvalues) 262 { 263 int ret; 264 /* put the u8 bank and u8 reg together into a an u16. 265 * bank on higher 8 bits and reg in lower */ 266 u16 addr = ((u16)bank) << 8 | reg; 267 268 mutex_lock(&ab8500->lock); 269 270 if (ab8500->write_masked == NULL) { 271 u8 data; 272 273 ret = ab8500->read(ab8500, addr); 274 if (ret < 0) { 275 dev_err(ab8500->dev, "failed to read reg %#x: %d\n", 276 addr, ret); 277 goto out; 278 } 279 280 data = (u8)ret; 281 data = (~bitmask & data) | (bitmask & bitvalues); 282 283 ret = ab8500->write(ab8500, addr, data); 284 if (ret < 0) 285 dev_err(ab8500->dev, "failed to write reg %#x: %d\n", 286 addr, ret); 287 288 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, 289 data); 290 goto out; 291 } 292 ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues); 293 if (ret < 0) 294 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr, 295 ret); 296 out: 297 mutex_unlock(&ab8500->lock); 298 return ret; 299 } 300 301 static int ab8500_mask_and_set_register(struct device *dev, 302 u8 bank, u8 reg, u8 bitmask, u8 bitvalues) 303 { 304 int ret; 305 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); 306 307 atomic_inc(&ab8500->transfer_ongoing); 308 ret= mask_and_set_register_interruptible(ab8500, bank, reg, 309 bitmask, bitvalues); 310 atomic_dec(&ab8500->transfer_ongoing); 311 return ret; 312 } 313 314 static struct abx500_ops ab8500_ops = { 315 .get_chip_id = ab8500_get_chip_id, 316 .get_register = ab8500_get_register, 317 .set_register = ab8500_set_register, 318 .get_register_page = NULL, 319 .set_register_page = NULL, 320 .mask_and_set_register = ab8500_mask_and_set_register, 321 .event_registers_startup_state_get = NULL, 322 .startup_irq_enabled = NULL, 323 }; 324 325 static void ab8500_irq_lock(struct irq_data *data) 326 { 327 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 328 329 mutex_lock(&ab8500->irq_lock); 330 atomic_inc(&ab8500->transfer_ongoing); 331 } 332 333 static void ab8500_irq_sync_unlock(struct irq_data *data) 334 { 335 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 336 int i; 337 338 for (i = 0; i < ab8500->mask_size; i++) { 339 u8 old = ab8500->oldmask[i]; 340 u8 new = ab8500->mask[i]; 341 int reg; 342 343 if (new == old) 344 continue; 345 346 /* 347 * Interrupt register 12 doesn't exist prior to AB8500 version 348 * 2.0 349 */ 350 if (ab8500->irq_reg_offset[i] == 11 && 351 is_ab8500_1p1_or_earlier(ab8500)) 352 continue; 353 354 ab8500->oldmask[i] = new; 355 356 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i]; 357 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new); 358 } 359 atomic_dec(&ab8500->transfer_ongoing); 360 mutex_unlock(&ab8500->irq_lock); 361 } 362 363 static void ab8500_irq_mask(struct irq_data *data) 364 { 365 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 366 int offset = data->hwirq; 367 int index = offset / 8; 368 int mask = 1 << (offset % 8); 369 370 ab8500->mask[index] |= mask; 371 } 372 373 static void ab8500_irq_unmask(struct irq_data *data) 374 { 375 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 376 int offset = data->hwirq; 377 int index = offset / 8; 378 int mask = 1 << (offset % 8); 379 380 ab8500->mask[index] &= ~mask; 381 } 382 383 static struct irq_chip ab8500_irq_chip = { 384 .name = "ab8500", 385 .irq_bus_lock = ab8500_irq_lock, 386 .irq_bus_sync_unlock = ab8500_irq_sync_unlock, 387 .irq_mask = ab8500_irq_mask, 388 .irq_disable = ab8500_irq_mask, 389 .irq_unmask = ab8500_irq_unmask, 390 }; 391 392 static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500, 393 int latch_offset, u8 latch_val) 394 { 395 int int_bit = __ffs(latch_val); 396 int line, i; 397 398 do { 399 int_bit = __ffs(latch_val); 400 401 for (i = 0; i < ab8500->mask_size; i++) 402 if (ab8500->irq_reg_offset[i] == latch_offset) 403 break; 404 405 if (i >= ab8500->mask_size) { 406 dev_err(ab8500->dev, "Register offset 0x%2x not declared\n", 407 latch_offset); 408 return -ENXIO; 409 } 410 411 line = (i << 3) + int_bit; 412 latch_val &= ~(1 << int_bit); 413 414 handle_nested_irq(ab8500->irq_base + line); 415 } while (latch_val); 416 417 return 0; 418 } 419 420 static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500, 421 int hier_offset, u8 hier_val) 422 { 423 int latch_bit, status; 424 u8 latch_offset, latch_val; 425 426 do { 427 latch_bit = __ffs(hier_val); 428 latch_offset = (hier_offset << 3) + latch_bit; 429 430 /* Fix inconsistent ITFromLatch25 bit mapping... */ 431 if (unlikely(latch_offset == 17)) 432 latch_offset = 24; 433 434 status = get_register_interruptible(ab8500, 435 AB8500_INTERRUPT, 436 AB8500_IT_LATCH1_REG + latch_offset, 437 &latch_val); 438 if (status < 0 || latch_val == 0) 439 goto discard; 440 441 status = ab8500_handle_hierarchical_line(ab8500, 442 latch_offset, latch_val); 443 if (status < 0) 444 return status; 445 discard: 446 hier_val &= ~(1 << latch_bit); 447 } while (hier_val); 448 449 return 0; 450 } 451 452 static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev) 453 { 454 struct ab8500 *ab8500 = dev; 455 u8 i; 456 457 dev_vdbg(ab8500->dev, "interrupt\n"); 458 459 /* Hierarchical interrupt version */ 460 for (i = 0; i < AB8500_IT_LATCHHIER_NUM; i++) { 461 int status; 462 u8 hier_val; 463 464 status = get_register_interruptible(ab8500, AB8500_INTERRUPT, 465 AB8500_IT_LATCHHIER1_REG + i, &hier_val); 466 if (status < 0 || hier_val == 0) 467 continue; 468 469 status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val); 470 if (status < 0) 471 break; 472 } 473 return IRQ_HANDLED; 474 } 475 476 /** 477 * ab8500_irq_get_virq(): Map an interrupt on a chip to a virtual IRQ 478 * 479 * @ab8500: ab8500_irq controller to operate on. 480 * @irq: index of the interrupt requested in the chip IRQs 481 * 482 * Useful for drivers to request their own IRQs. 483 */ 484 static int ab8500_irq_get_virq(struct ab8500 *ab8500, int irq) 485 { 486 if (!ab8500) 487 return -EINVAL; 488 489 return irq_create_mapping(ab8500->domain, irq); 490 } 491 492 static irqreturn_t ab8500_irq(int irq, void *dev) 493 { 494 struct ab8500 *ab8500 = dev; 495 int i; 496 497 dev_vdbg(ab8500->dev, "interrupt\n"); 498 499 atomic_inc(&ab8500->transfer_ongoing); 500 501 for (i = 0; i < ab8500->mask_size; i++) { 502 int regoffset = ab8500->irq_reg_offset[i]; 503 int status; 504 u8 value; 505 506 /* 507 * Interrupt register 12 doesn't exist prior to AB8500 version 508 * 2.0 509 */ 510 if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500)) 511 continue; 512 513 status = get_register_interruptible(ab8500, AB8500_INTERRUPT, 514 AB8500_IT_LATCH1_REG + regoffset, &value); 515 if (status < 0 || value == 0) 516 continue; 517 518 do { 519 int bit = __ffs(value); 520 int line = i * 8 + bit; 521 int virq = ab8500_irq_get_virq(ab8500, line); 522 523 handle_nested_irq(virq); 524 value &= ~(1 << bit); 525 526 } while (value); 527 } 528 atomic_dec(&ab8500->transfer_ongoing); 529 return IRQ_HANDLED; 530 } 531 532 static int ab8500_irq_map(struct irq_domain *d, unsigned int virq, 533 irq_hw_number_t hwirq) 534 { 535 struct ab8500 *ab8500 = d->host_data; 536 537 if (!ab8500) 538 return -EINVAL; 539 540 irq_set_chip_data(virq, ab8500); 541 irq_set_chip_and_handler(virq, &ab8500_irq_chip, 542 handle_simple_irq); 543 irq_set_nested_thread(virq, 1); 544 #ifdef CONFIG_ARM 545 set_irq_flags(virq, IRQF_VALID); 546 #else 547 irq_set_noprobe(virq); 548 #endif 549 550 return 0; 551 } 552 553 static struct irq_domain_ops ab8500_irq_ops = { 554 .map = ab8500_irq_map, 555 .xlate = irq_domain_xlate_twocell, 556 }; 557 558 static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np) 559 { 560 int num_irqs; 561 562 if (is_ab9540(ab8500)) 563 num_irqs = AB9540_NR_IRQS; 564 else if (is_ab8505(ab8500)) 565 num_irqs = AB8505_NR_IRQS; 566 else 567 num_irqs = AB8500_NR_IRQS; 568 569 /* If ->irq_base is zero this will give a linear mapping */ 570 ab8500->domain = irq_domain_add_simple(NULL, 571 num_irqs, ab8500->irq_base, 572 &ab8500_irq_ops, ab8500); 573 574 if (!ab8500->domain) { 575 dev_err(ab8500->dev, "Failed to create irqdomain\n"); 576 return -ENOSYS; 577 } 578 579 return 0; 580 } 581 582 int ab8500_suspend(struct ab8500 *ab8500) 583 { 584 if (atomic_read(&ab8500->transfer_ongoing)) 585 return -EINVAL; 586 else 587 return 0; 588 } 589 590 static struct resource ab8500_gpadc_resources[] = { 591 { 592 .name = "HW_CONV_END", 593 .start = AB8500_INT_GP_HW_ADC_CONV_END, 594 .end = AB8500_INT_GP_HW_ADC_CONV_END, 595 .flags = IORESOURCE_IRQ, 596 }, 597 { 598 .name = "SW_CONV_END", 599 .start = AB8500_INT_GP_SW_ADC_CONV_END, 600 .end = AB8500_INT_GP_SW_ADC_CONV_END, 601 .flags = IORESOURCE_IRQ, 602 }, 603 }; 604 605 static struct resource ab8500_rtc_resources[] = { 606 { 607 .name = "60S", 608 .start = AB8500_INT_RTC_60S, 609 .end = AB8500_INT_RTC_60S, 610 .flags = IORESOURCE_IRQ, 611 }, 612 { 613 .name = "ALARM", 614 .start = AB8500_INT_RTC_ALARM, 615 .end = AB8500_INT_RTC_ALARM, 616 .flags = IORESOURCE_IRQ, 617 }, 618 }; 619 620 static struct resource ab8500_poweronkey_db_resources[] = { 621 { 622 .name = "ONKEY_DBF", 623 .start = AB8500_INT_PON_KEY1DB_F, 624 .end = AB8500_INT_PON_KEY1DB_F, 625 .flags = IORESOURCE_IRQ, 626 }, 627 { 628 .name = "ONKEY_DBR", 629 .start = AB8500_INT_PON_KEY1DB_R, 630 .end = AB8500_INT_PON_KEY1DB_R, 631 .flags = IORESOURCE_IRQ, 632 }, 633 }; 634 635 static struct resource ab8500_av_acc_detect_resources[] = { 636 { 637 .name = "ACC_DETECT_1DB_F", 638 .start = AB8500_INT_ACC_DETECT_1DB_F, 639 .end = AB8500_INT_ACC_DETECT_1DB_F, 640 .flags = IORESOURCE_IRQ, 641 }, 642 { 643 .name = "ACC_DETECT_1DB_R", 644 .start = AB8500_INT_ACC_DETECT_1DB_R, 645 .end = AB8500_INT_ACC_DETECT_1DB_R, 646 .flags = IORESOURCE_IRQ, 647 }, 648 { 649 .name = "ACC_DETECT_21DB_F", 650 .start = AB8500_INT_ACC_DETECT_21DB_F, 651 .end = AB8500_INT_ACC_DETECT_21DB_F, 652 .flags = IORESOURCE_IRQ, 653 }, 654 { 655 .name = "ACC_DETECT_21DB_R", 656 .start = AB8500_INT_ACC_DETECT_21DB_R, 657 .end = AB8500_INT_ACC_DETECT_21DB_R, 658 .flags = IORESOURCE_IRQ, 659 }, 660 { 661 .name = "ACC_DETECT_22DB_F", 662 .start = AB8500_INT_ACC_DETECT_22DB_F, 663 .end = AB8500_INT_ACC_DETECT_22DB_F, 664 .flags = IORESOURCE_IRQ, 665 }, 666 { 667 .name = "ACC_DETECT_22DB_R", 668 .start = AB8500_INT_ACC_DETECT_22DB_R, 669 .end = AB8500_INT_ACC_DETECT_22DB_R, 670 .flags = IORESOURCE_IRQ, 671 }, 672 }; 673 674 static struct resource ab8500_charger_resources[] = { 675 { 676 .name = "MAIN_CH_UNPLUG_DET", 677 .start = AB8500_INT_MAIN_CH_UNPLUG_DET, 678 .end = AB8500_INT_MAIN_CH_UNPLUG_DET, 679 .flags = IORESOURCE_IRQ, 680 }, 681 { 682 .name = "MAIN_CHARGE_PLUG_DET", 683 .start = AB8500_INT_MAIN_CH_PLUG_DET, 684 .end = AB8500_INT_MAIN_CH_PLUG_DET, 685 .flags = IORESOURCE_IRQ, 686 }, 687 { 688 .name = "VBUS_DET_R", 689 .start = AB8500_INT_VBUS_DET_R, 690 .end = AB8500_INT_VBUS_DET_R, 691 .flags = IORESOURCE_IRQ, 692 }, 693 { 694 .name = "VBUS_DET_F", 695 .start = AB8500_INT_VBUS_DET_F, 696 .end = AB8500_INT_VBUS_DET_F, 697 .flags = IORESOURCE_IRQ, 698 }, 699 { 700 .name = "USB_LINK_STATUS", 701 .start = AB8500_INT_USB_LINK_STATUS, 702 .end = AB8500_INT_USB_LINK_STATUS, 703 .flags = IORESOURCE_IRQ, 704 }, 705 { 706 .name = "VBUS_OVV", 707 .start = AB8500_INT_VBUS_OVV, 708 .end = AB8500_INT_VBUS_OVV, 709 .flags = IORESOURCE_IRQ, 710 }, 711 { 712 .name = "USB_CH_TH_PROT_R", 713 .start = AB8500_INT_USB_CH_TH_PROT_R, 714 .end = AB8500_INT_USB_CH_TH_PROT_R, 715 .flags = IORESOURCE_IRQ, 716 }, 717 { 718 .name = "USB_CH_TH_PROT_F", 719 .start = AB8500_INT_USB_CH_TH_PROT_F, 720 .end = AB8500_INT_USB_CH_TH_PROT_F, 721 .flags = IORESOURCE_IRQ, 722 }, 723 { 724 .name = "MAIN_EXT_CH_NOT_OK", 725 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK, 726 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK, 727 .flags = IORESOURCE_IRQ, 728 }, 729 { 730 .name = "MAIN_CH_TH_PROT_R", 731 .start = AB8500_INT_MAIN_CH_TH_PROT_R, 732 .end = AB8500_INT_MAIN_CH_TH_PROT_R, 733 .flags = IORESOURCE_IRQ, 734 }, 735 { 736 .name = "MAIN_CH_TH_PROT_F", 737 .start = AB8500_INT_MAIN_CH_TH_PROT_F, 738 .end = AB8500_INT_MAIN_CH_TH_PROT_F, 739 .flags = IORESOURCE_IRQ, 740 }, 741 { 742 .name = "USB_CHARGER_NOT_OKR", 743 .start = AB8500_INT_USB_CHARGER_NOT_OKR, 744 .end = AB8500_INT_USB_CHARGER_NOT_OKR, 745 .flags = IORESOURCE_IRQ, 746 }, 747 { 748 .name = "CH_WD_EXP", 749 .start = AB8500_INT_CH_WD_EXP, 750 .end = AB8500_INT_CH_WD_EXP, 751 .flags = IORESOURCE_IRQ, 752 }, 753 { 754 .name = "VBUS_CH_DROP_END", 755 .start = AB8500_INT_VBUS_CH_DROP_END, 756 .end = AB8500_INT_VBUS_CH_DROP_END, 757 .flags = IORESOURCE_IRQ, 758 }, 759 }; 760 761 static struct resource ab8500_btemp_resources[] = { 762 { 763 .name = "BAT_CTRL_INDB", 764 .start = AB8500_INT_BAT_CTRL_INDB, 765 .end = AB8500_INT_BAT_CTRL_INDB, 766 .flags = IORESOURCE_IRQ, 767 }, 768 { 769 .name = "BTEMP_LOW", 770 .start = AB8500_INT_BTEMP_LOW, 771 .end = AB8500_INT_BTEMP_LOW, 772 .flags = IORESOURCE_IRQ, 773 }, 774 { 775 .name = "BTEMP_HIGH", 776 .start = AB8500_INT_BTEMP_HIGH, 777 .end = AB8500_INT_BTEMP_HIGH, 778 .flags = IORESOURCE_IRQ, 779 }, 780 { 781 .name = "BTEMP_LOW_MEDIUM", 782 .start = AB8500_INT_BTEMP_LOW_MEDIUM, 783 .end = AB8500_INT_BTEMP_LOW_MEDIUM, 784 .flags = IORESOURCE_IRQ, 785 }, 786 { 787 .name = "BTEMP_MEDIUM_HIGH", 788 .start = AB8500_INT_BTEMP_MEDIUM_HIGH, 789 .end = AB8500_INT_BTEMP_MEDIUM_HIGH, 790 .flags = IORESOURCE_IRQ, 791 }, 792 }; 793 794 static struct resource ab8500_fg_resources[] = { 795 { 796 .name = "NCONV_ACCU", 797 .start = AB8500_INT_CCN_CONV_ACC, 798 .end = AB8500_INT_CCN_CONV_ACC, 799 .flags = IORESOURCE_IRQ, 800 }, 801 { 802 .name = "BATT_OVV", 803 .start = AB8500_INT_BATT_OVV, 804 .end = AB8500_INT_BATT_OVV, 805 .flags = IORESOURCE_IRQ, 806 }, 807 { 808 .name = "LOW_BAT_F", 809 .start = AB8500_INT_LOW_BAT_F, 810 .end = AB8500_INT_LOW_BAT_F, 811 .flags = IORESOURCE_IRQ, 812 }, 813 { 814 .name = "LOW_BAT_R", 815 .start = AB8500_INT_LOW_BAT_R, 816 .end = AB8500_INT_LOW_BAT_R, 817 .flags = IORESOURCE_IRQ, 818 }, 819 { 820 .name = "CC_INT_CALIB", 821 .start = AB8500_INT_CC_INT_CALIB, 822 .end = AB8500_INT_CC_INT_CALIB, 823 .flags = IORESOURCE_IRQ, 824 }, 825 { 826 .name = "CCEOC", 827 .start = AB8500_INT_CCEOC, 828 .end = AB8500_INT_CCEOC, 829 .flags = IORESOURCE_IRQ, 830 }, 831 }; 832 833 static struct resource ab8500_chargalg_resources[] = {}; 834 835 #ifdef CONFIG_DEBUG_FS 836 static struct resource ab8500_debug_resources[] = { 837 { 838 .name = "IRQ_FIRST", 839 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK, 840 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK, 841 .flags = IORESOURCE_IRQ, 842 }, 843 { 844 .name = "IRQ_LAST", 845 .start = AB8500_INT_XTAL32K_KO, 846 .end = AB8500_INT_XTAL32K_KO, 847 .flags = IORESOURCE_IRQ, 848 }, 849 }; 850 #endif 851 852 static struct resource ab8500_usb_resources[] = { 853 { 854 .name = "ID_WAKEUP_R", 855 .start = AB8500_INT_ID_WAKEUP_R, 856 .end = AB8500_INT_ID_WAKEUP_R, 857 .flags = IORESOURCE_IRQ, 858 }, 859 { 860 .name = "ID_WAKEUP_F", 861 .start = AB8500_INT_ID_WAKEUP_F, 862 .end = AB8500_INT_ID_WAKEUP_F, 863 .flags = IORESOURCE_IRQ, 864 }, 865 { 866 .name = "VBUS_DET_F", 867 .start = AB8500_INT_VBUS_DET_F, 868 .end = AB8500_INT_VBUS_DET_F, 869 .flags = IORESOURCE_IRQ, 870 }, 871 { 872 .name = "VBUS_DET_R", 873 .start = AB8500_INT_VBUS_DET_R, 874 .end = AB8500_INT_VBUS_DET_R, 875 .flags = IORESOURCE_IRQ, 876 }, 877 { 878 .name = "USB_LINK_STATUS", 879 .start = AB8500_INT_USB_LINK_STATUS, 880 .end = AB8500_INT_USB_LINK_STATUS, 881 .flags = IORESOURCE_IRQ, 882 }, 883 { 884 .name = "USB_ADP_PROBE_PLUG", 885 .start = AB8500_INT_ADP_PROBE_PLUG, 886 .end = AB8500_INT_ADP_PROBE_PLUG, 887 .flags = IORESOURCE_IRQ, 888 }, 889 { 890 .name = "USB_ADP_PROBE_UNPLUG", 891 .start = AB8500_INT_ADP_PROBE_UNPLUG, 892 .end = AB8500_INT_ADP_PROBE_UNPLUG, 893 .flags = IORESOURCE_IRQ, 894 }, 895 }; 896 897 static struct resource ab8505_iddet_resources[] = { 898 { 899 .name = "KeyDeglitch", 900 .start = AB8505_INT_KEYDEGLITCH, 901 .end = AB8505_INT_KEYDEGLITCH, 902 .flags = IORESOURCE_IRQ, 903 }, 904 { 905 .name = "KP", 906 .start = AB8505_INT_KP, 907 .end = AB8505_INT_KP, 908 .flags = IORESOURCE_IRQ, 909 }, 910 { 911 .name = "IKP", 912 .start = AB8505_INT_IKP, 913 .end = AB8505_INT_IKP, 914 .flags = IORESOURCE_IRQ, 915 }, 916 { 917 .name = "IKR", 918 .start = AB8505_INT_IKR, 919 .end = AB8505_INT_IKR, 920 .flags = IORESOURCE_IRQ, 921 }, 922 { 923 .name = "KeyStuck", 924 .start = AB8505_INT_KEYSTUCK, 925 .end = AB8505_INT_KEYSTUCK, 926 .flags = IORESOURCE_IRQ, 927 }, 928 }; 929 930 static struct resource ab8500_temp_resources[] = { 931 { 932 .name = "AB8500_TEMP_WARM", 933 .start = AB8500_INT_TEMP_WARM, 934 .end = AB8500_INT_TEMP_WARM, 935 .flags = IORESOURCE_IRQ, 936 }, 937 }; 938 939 static struct mfd_cell abx500_common_devs[] = { 940 #ifdef CONFIG_DEBUG_FS 941 { 942 .name = "ab8500-debug", 943 .of_compatible = "stericsson,ab8500-debug", 944 .num_resources = ARRAY_SIZE(ab8500_debug_resources), 945 .resources = ab8500_debug_resources, 946 }, 947 #endif 948 { 949 .name = "ab8500-sysctrl", 950 .of_compatible = "stericsson,ab8500-sysctrl", 951 }, 952 { 953 .name = "ab8500-regulator", 954 .of_compatible = "stericsson,ab8500-regulator", 955 }, 956 { 957 .name = "abx500-clk", 958 .of_compatible = "stericsson,abx500-clk", 959 }, 960 { 961 .name = "ab8500-gpadc", 962 .of_compatible = "stericsson,ab8500-gpadc", 963 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources), 964 .resources = ab8500_gpadc_resources, 965 }, 966 { 967 .name = "ab8500-rtc", 968 .of_compatible = "stericsson,ab8500-rtc", 969 .num_resources = ARRAY_SIZE(ab8500_rtc_resources), 970 .resources = ab8500_rtc_resources, 971 }, 972 { 973 .name = "ab8500-acc-det", 974 .of_compatible = "stericsson,ab8500-acc-det", 975 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources), 976 .resources = ab8500_av_acc_detect_resources, 977 }, 978 { 979 .name = "ab8500-poweron-key", 980 .of_compatible = "stericsson,ab8500-poweron-key", 981 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources), 982 .resources = ab8500_poweronkey_db_resources, 983 }, 984 { 985 .name = "ab8500-pwm", 986 .of_compatible = "stericsson,ab8500-pwm", 987 .id = 1, 988 }, 989 { 990 .name = "ab8500-pwm", 991 .of_compatible = "stericsson,ab8500-pwm", 992 .id = 2, 993 }, 994 { 995 .name = "ab8500-pwm", 996 .of_compatible = "stericsson,ab8500-pwm", 997 .id = 3, 998 }, 999 { 1000 .name = "ab8500-leds", 1001 .of_compatible = "stericsson,ab8500-leds", 1002 }, 1003 { 1004 .name = "ab8500-denc", 1005 .of_compatible = "stericsson,ab8500-denc", 1006 }, 1007 { 1008 .name = "ab8500-temp", 1009 .of_compatible = "stericsson,ab8500-temp", 1010 .num_resources = ARRAY_SIZE(ab8500_temp_resources), 1011 .resources = ab8500_temp_resources, 1012 }, 1013 }; 1014 1015 static struct mfd_cell ab8500_bm_devs[] = { 1016 { 1017 .name = "ab8500-charger", 1018 .of_compatible = "stericsson,ab8500-charger", 1019 .num_resources = ARRAY_SIZE(ab8500_charger_resources), 1020 .resources = ab8500_charger_resources, 1021 .platform_data = &ab8500_bm_data, 1022 .pdata_size = sizeof(ab8500_bm_data), 1023 }, 1024 { 1025 .name = "ab8500-btemp", 1026 .of_compatible = "stericsson,ab8500-btemp", 1027 .num_resources = ARRAY_SIZE(ab8500_btemp_resources), 1028 .resources = ab8500_btemp_resources, 1029 .platform_data = &ab8500_bm_data, 1030 .pdata_size = sizeof(ab8500_bm_data), 1031 }, 1032 { 1033 .name = "ab8500-fg", 1034 .of_compatible = "stericsson,ab8500-fg", 1035 .num_resources = ARRAY_SIZE(ab8500_fg_resources), 1036 .resources = ab8500_fg_resources, 1037 .platform_data = &ab8500_bm_data, 1038 .pdata_size = sizeof(ab8500_bm_data), 1039 }, 1040 { 1041 .name = "ab8500-chargalg", 1042 .of_compatible = "stericsson,ab8500-chargalg", 1043 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources), 1044 .resources = ab8500_chargalg_resources, 1045 .platform_data = &ab8500_bm_data, 1046 .pdata_size = sizeof(ab8500_bm_data), 1047 }, 1048 }; 1049 1050 static struct mfd_cell ab8500_devs[] = { 1051 { 1052 .name = "ab8500-gpio", 1053 .of_compatible = "stericsson,ab8500-gpio", 1054 }, 1055 { 1056 .name = "ab8500-usb", 1057 .of_compatible = "stericsson,ab8500-usb", 1058 .num_resources = ARRAY_SIZE(ab8500_usb_resources), 1059 .resources = ab8500_usb_resources, 1060 }, 1061 { 1062 .name = "ab8500-codec", 1063 .of_compatible = "stericsson,ab8500-codec", 1064 }, 1065 }; 1066 1067 static struct mfd_cell ab9540_devs[] = { 1068 { 1069 .name = "ab8500-gpio", 1070 }, 1071 { 1072 .name = "ab9540-usb", 1073 .num_resources = ARRAY_SIZE(ab8500_usb_resources), 1074 .resources = ab8500_usb_resources, 1075 }, 1076 { 1077 .name = "ab9540-codec", 1078 }, 1079 }; 1080 1081 /* Device list common to ab9540 and ab8505 */ 1082 static struct mfd_cell ab9540_ab8505_devs[] = { 1083 { 1084 .name = "ab-iddet", 1085 .num_resources = ARRAY_SIZE(ab8505_iddet_resources), 1086 .resources = ab8505_iddet_resources, 1087 }, 1088 }; 1089 1090 static ssize_t show_chip_id(struct device *dev, 1091 struct device_attribute *attr, char *buf) 1092 { 1093 struct ab8500 *ab8500; 1094 1095 ab8500 = dev_get_drvdata(dev); 1096 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL); 1097 } 1098 1099 /* 1100 * ab8500 has switched off due to (SWITCH_OFF_STATUS): 1101 * 0x01 Swoff bit programming 1102 * 0x02 Thermal protection activation 1103 * 0x04 Vbat lower then BattOk falling threshold 1104 * 0x08 Watchdog expired 1105 * 0x10 Non presence of 32kHz clock 1106 * 0x20 Battery level lower than power on reset threshold 1107 * 0x40 Power on key 1 pressed longer than 10 seconds 1108 * 0x80 DB8500 thermal shutdown 1109 */ 1110 static ssize_t show_switch_off_status(struct device *dev, 1111 struct device_attribute *attr, char *buf) 1112 { 1113 int ret; 1114 u8 value; 1115 struct ab8500 *ab8500; 1116 1117 ab8500 = dev_get_drvdata(dev); 1118 ret = get_register_interruptible(ab8500, AB8500_RTC, 1119 AB8500_SWITCH_OFF_STATUS, &value); 1120 if (ret < 0) 1121 return ret; 1122 return sprintf(buf, "%#x\n", value); 1123 } 1124 1125 /* 1126 * ab8500 has turned on due to (TURN_ON_STATUS): 1127 * 0x01 PORnVbat 1128 * 0x02 PonKey1dbF 1129 * 0x04 PonKey2dbF 1130 * 0x08 RTCAlarm 1131 * 0x10 MainChDet 1132 * 0x20 VbusDet 1133 * 0x40 UsbIDDetect 1134 * 0x80 Reserved 1135 */ 1136 static ssize_t show_turn_on_status(struct device *dev, 1137 struct device_attribute *attr, char *buf) 1138 { 1139 int ret; 1140 u8 value; 1141 struct ab8500 *ab8500; 1142 1143 ab8500 = dev_get_drvdata(dev); 1144 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK, 1145 AB8500_TURN_ON_STATUS, &value); 1146 if (ret < 0) 1147 return ret; 1148 return sprintf(buf, "%#x\n", value); 1149 } 1150 1151 static ssize_t show_ab9540_dbbrstn(struct device *dev, 1152 struct device_attribute *attr, char *buf) 1153 { 1154 struct ab8500 *ab8500; 1155 int ret; 1156 u8 value; 1157 1158 ab8500 = dev_get_drvdata(dev); 1159 1160 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2, 1161 AB9540_MODEM_CTRL2_REG, &value); 1162 if (ret < 0) 1163 return ret; 1164 1165 return sprintf(buf, "%d\n", 1166 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0); 1167 } 1168 1169 static ssize_t store_ab9540_dbbrstn(struct device *dev, 1170 struct device_attribute *attr, const char *buf, size_t count) 1171 { 1172 struct ab8500 *ab8500; 1173 int ret = count; 1174 int err; 1175 u8 bitvalues; 1176 1177 ab8500 = dev_get_drvdata(dev); 1178 1179 if (count > 0) { 1180 switch (buf[0]) { 1181 case '0': 1182 bitvalues = 0; 1183 break; 1184 case '1': 1185 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT; 1186 break; 1187 default: 1188 goto exit; 1189 } 1190 1191 err = mask_and_set_register_interruptible(ab8500, 1192 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG, 1193 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues); 1194 if (err) 1195 dev_info(ab8500->dev, 1196 "Failed to set DBBRSTN %c, err %#x\n", 1197 buf[0], err); 1198 } 1199 1200 exit: 1201 return ret; 1202 } 1203 1204 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL); 1205 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL); 1206 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL); 1207 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR, 1208 show_ab9540_dbbrstn, store_ab9540_dbbrstn); 1209 1210 static struct attribute *ab8500_sysfs_entries[] = { 1211 &dev_attr_chip_id.attr, 1212 &dev_attr_switch_off_status.attr, 1213 &dev_attr_turn_on_status.attr, 1214 NULL, 1215 }; 1216 1217 static struct attribute *ab9540_sysfs_entries[] = { 1218 &dev_attr_chip_id.attr, 1219 &dev_attr_switch_off_status.attr, 1220 &dev_attr_turn_on_status.attr, 1221 &dev_attr_dbbrstn.attr, 1222 NULL, 1223 }; 1224 1225 static struct attribute_group ab8500_attr_group = { 1226 .attrs = ab8500_sysfs_entries, 1227 }; 1228 1229 static struct attribute_group ab9540_attr_group = { 1230 .attrs = ab9540_sysfs_entries, 1231 }; 1232 1233 static int ab8500_probe(struct platform_device *pdev) 1234 { 1235 static char *switch_off_status[] = { 1236 "Swoff bit programming", 1237 "Thermal protection activation", 1238 "Vbat lower then BattOk falling threshold", 1239 "Watchdog expired", 1240 "Non presence of 32kHz clock", 1241 "Battery level lower than power on reset threshold", 1242 "Power on key 1 pressed longer than 10 seconds", 1243 "DB8500 thermal shutdown"}; 1244 struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev); 1245 const struct platform_device_id *platid = platform_get_device_id(pdev); 1246 enum ab8500_version version = AB8500_VERSION_UNDEFINED; 1247 struct device_node *np = pdev->dev.of_node; 1248 struct ab8500 *ab8500; 1249 struct resource *resource; 1250 int ret; 1251 int i; 1252 u8 value; 1253 1254 ab8500 = devm_kzalloc(&pdev->dev, sizeof *ab8500, GFP_KERNEL); 1255 if (!ab8500) 1256 return -ENOMEM; 1257 1258 if (plat) 1259 ab8500->irq_base = plat->irq_base; 1260 1261 ab8500->dev = &pdev->dev; 1262 1263 resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 1264 if (!resource) 1265 return -ENODEV; 1266 1267 ab8500->irq = resource->start; 1268 1269 ab8500->read = ab8500_prcmu_read; 1270 ab8500->write = ab8500_prcmu_write; 1271 ab8500->write_masked = ab8500_prcmu_write_masked; 1272 1273 mutex_init(&ab8500->lock); 1274 mutex_init(&ab8500->irq_lock); 1275 atomic_set(&ab8500->transfer_ongoing, 0); 1276 1277 platform_set_drvdata(pdev, ab8500); 1278 1279 if (platid) 1280 version = platid->driver_data; 1281 1282 if (version != AB8500_VERSION_UNDEFINED) 1283 ab8500->version = version; 1284 else { 1285 ret = get_register_interruptible(ab8500, AB8500_MISC, 1286 AB8500_IC_NAME_REG, &value); 1287 if (ret < 0) 1288 return ret; 1289 1290 ab8500->version = value; 1291 } 1292 1293 ret = get_register_interruptible(ab8500, AB8500_MISC, 1294 AB8500_REV_REG, &value); 1295 if (ret < 0) 1296 return ret; 1297 1298 ab8500->chip_id = value; 1299 1300 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n", 1301 ab8500_version_str[ab8500->version], 1302 ab8500->chip_id >> 4, 1303 ab8500->chip_id & 0x0F); 1304 1305 /* Configure AB8500 or AB9540 IRQ */ 1306 if (is_ab9540(ab8500) || is_ab8505(ab8500)) { 1307 ab8500->mask_size = AB9540_NUM_IRQ_REGS; 1308 ab8500->irq_reg_offset = ab9540_irq_regoffset; 1309 } else { 1310 ab8500->mask_size = AB8500_NUM_IRQ_REGS; 1311 ab8500->irq_reg_offset = ab8500_irq_regoffset; 1312 } 1313 ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL); 1314 if (!ab8500->mask) 1315 return -ENOMEM; 1316 ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL); 1317 if (!ab8500->oldmask) 1318 return -ENOMEM; 1319 1320 /* 1321 * ab8500 has switched off due to (SWITCH_OFF_STATUS): 1322 * 0x01 Swoff bit programming 1323 * 0x02 Thermal protection activation 1324 * 0x04 Vbat lower then BattOk falling threshold 1325 * 0x08 Watchdog expired 1326 * 0x10 Non presence of 32kHz clock 1327 * 0x20 Battery level lower than power on reset threshold 1328 * 0x40 Power on key 1 pressed longer than 10 seconds 1329 * 0x80 DB8500 thermal shutdown 1330 */ 1331 1332 ret = get_register_interruptible(ab8500, AB8500_RTC, 1333 AB8500_SWITCH_OFF_STATUS, &value); 1334 if (ret < 0) 1335 return ret; 1336 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value); 1337 1338 if (value) { 1339 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) { 1340 if (value & 1) 1341 printk(KERN_CONT " \"%s\"", 1342 switch_off_status[i]); 1343 value = value >> 1; 1344 1345 } 1346 printk(KERN_CONT "\n"); 1347 } else { 1348 printk(KERN_CONT " None\n"); 1349 } 1350 1351 if (plat && plat->init) 1352 plat->init(ab8500); 1353 1354 /* Clear and mask all interrupts */ 1355 for (i = 0; i < ab8500->mask_size; i++) { 1356 /* 1357 * Interrupt register 12 doesn't exist prior to AB8500 version 1358 * 2.0 1359 */ 1360 if (ab8500->irq_reg_offset[i] == 11 && 1361 is_ab8500_1p1_or_earlier(ab8500)) 1362 continue; 1363 1364 get_register_interruptible(ab8500, AB8500_INTERRUPT, 1365 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i], 1366 &value); 1367 set_register_interruptible(ab8500, AB8500_INTERRUPT, 1368 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff); 1369 } 1370 1371 ret = abx500_register_ops(ab8500->dev, &ab8500_ops); 1372 if (ret) 1373 return ret; 1374 1375 for (i = 0; i < ab8500->mask_size; i++) 1376 ab8500->mask[i] = ab8500->oldmask[i] = 0xff; 1377 1378 ret = ab8500_irq_init(ab8500, np); 1379 if (ret) 1380 return ret; 1381 1382 /* Activate this feature only in ab9540 */ 1383 /* till tests are done on ab8500 1p2 or later*/ 1384 if (is_ab9540(ab8500)) { 1385 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL, 1386 ab8500_hierarchical_irq, 1387 IRQF_ONESHOT | IRQF_NO_SUSPEND, 1388 "ab8500", ab8500); 1389 } 1390 else { 1391 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL, 1392 ab8500_irq, 1393 IRQF_ONESHOT | IRQF_NO_SUSPEND, 1394 "ab8500", ab8500); 1395 if (ret) 1396 return ret; 1397 } 1398 1399 ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs, 1400 ARRAY_SIZE(abx500_common_devs), NULL, 1401 ab8500->irq_base, ab8500->domain); 1402 if (ret) 1403 return ret; 1404 1405 if (is_ab9540(ab8500)) 1406 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs, 1407 ARRAY_SIZE(ab9540_devs), NULL, 1408 ab8500->irq_base, ab8500->domain); 1409 else 1410 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs, 1411 ARRAY_SIZE(ab8500_devs), NULL, 1412 ab8500->irq_base, ab8500->domain); 1413 if (ret) 1414 return ret; 1415 1416 if (is_ab9540(ab8500) || is_ab8505(ab8500)) 1417 ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs, 1418 ARRAY_SIZE(ab9540_ab8505_devs), NULL, 1419 ab8500->irq_base, ab8500->domain); 1420 if (ret) 1421 return ret; 1422 1423 if (!no_bm) { 1424 /* Add battery management devices */ 1425 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs, 1426 ARRAY_SIZE(ab8500_bm_devs), NULL, 1427 ab8500->irq_base, ab8500->domain); 1428 if (ret) 1429 dev_err(ab8500->dev, "error adding bm devices\n"); 1430 } 1431 1432 if (is_ab9540(ab8500)) 1433 ret = sysfs_create_group(&ab8500->dev->kobj, 1434 &ab9540_attr_group); 1435 else 1436 ret = sysfs_create_group(&ab8500->dev->kobj, 1437 &ab8500_attr_group); 1438 if (ret) 1439 dev_err(ab8500->dev, "error creating sysfs entries\n"); 1440 1441 return ret; 1442 } 1443 1444 static int ab8500_remove(struct platform_device *pdev) 1445 { 1446 struct ab8500 *ab8500 = platform_get_drvdata(pdev); 1447 1448 if (is_ab9540(ab8500)) 1449 sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group); 1450 else 1451 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group); 1452 1453 mfd_remove_devices(ab8500->dev); 1454 1455 return 0; 1456 } 1457 1458 static const struct platform_device_id ab8500_id[] = { 1459 { "ab8500-core", AB8500_VERSION_AB8500 }, 1460 { "ab8505-i2c", AB8500_VERSION_AB8505 }, 1461 { "ab9540-i2c", AB8500_VERSION_AB9540 }, 1462 { "ab8540-i2c", AB8500_VERSION_AB8540 }, 1463 { } 1464 }; 1465 1466 static struct platform_driver ab8500_core_driver = { 1467 .driver = { 1468 .name = "ab8500-core", 1469 .owner = THIS_MODULE, 1470 }, 1471 .probe = ab8500_probe, 1472 .remove = ab8500_remove, 1473 .id_table = ab8500_id, 1474 }; 1475 1476 static int __init ab8500_core_init(void) 1477 { 1478 return platform_driver_register(&ab8500_core_driver); 1479 } 1480 1481 static void __exit ab8500_core_exit(void) 1482 { 1483 platform_driver_unregister(&ab8500_core_driver); 1484 } 1485 core_initcall(ab8500_core_init); 1486 module_exit(ab8500_core_exit); 1487 1488 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent"); 1489 MODULE_DESCRIPTION("AB8500 MFD core"); 1490 MODULE_LICENSE("GPL v2"); 1491