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/dbx500-prcmu.h> 23 #include <linux/regulator/ab8500.h> 24 #include <linux/of.h> 25 #include <linux/of_device.h> 26 27 /* 28 * Interrupt register offsets 29 * Bank : 0x0E 30 */ 31 #define AB8500_IT_SOURCE1_REG 0x00 32 #define AB8500_IT_SOURCE2_REG 0x01 33 #define AB8500_IT_SOURCE3_REG 0x02 34 #define AB8500_IT_SOURCE4_REG 0x03 35 #define AB8500_IT_SOURCE5_REG 0x04 36 #define AB8500_IT_SOURCE6_REG 0x05 37 #define AB8500_IT_SOURCE7_REG 0x06 38 #define AB8500_IT_SOURCE8_REG 0x07 39 #define AB9540_IT_SOURCE13_REG 0x0C 40 #define AB8500_IT_SOURCE19_REG 0x12 41 #define AB8500_IT_SOURCE20_REG 0x13 42 #define AB8500_IT_SOURCE21_REG 0x14 43 #define AB8500_IT_SOURCE22_REG 0x15 44 #define AB8500_IT_SOURCE23_REG 0x16 45 #define AB8500_IT_SOURCE24_REG 0x17 46 47 /* 48 * latch registers 49 */ 50 #define AB8500_IT_LATCH1_REG 0x20 51 #define AB8500_IT_LATCH2_REG 0x21 52 #define AB8500_IT_LATCH3_REG 0x22 53 #define AB8500_IT_LATCH4_REG 0x23 54 #define AB8500_IT_LATCH5_REG 0x24 55 #define AB8500_IT_LATCH6_REG 0x25 56 #define AB8500_IT_LATCH7_REG 0x26 57 #define AB8500_IT_LATCH8_REG 0x27 58 #define AB8500_IT_LATCH9_REG 0x28 59 #define AB8500_IT_LATCH10_REG 0x29 60 #define AB8500_IT_LATCH12_REG 0x2B 61 #define AB9540_IT_LATCH13_REG 0x2C 62 #define AB8500_IT_LATCH19_REG 0x32 63 #define AB8500_IT_LATCH20_REG 0x33 64 #define AB8500_IT_LATCH21_REG 0x34 65 #define AB8500_IT_LATCH22_REG 0x35 66 #define AB8500_IT_LATCH23_REG 0x36 67 #define AB8500_IT_LATCH24_REG 0x37 68 69 /* 70 * mask registers 71 */ 72 73 #define AB8500_IT_MASK1_REG 0x40 74 #define AB8500_IT_MASK2_REG 0x41 75 #define AB8500_IT_MASK3_REG 0x42 76 #define AB8500_IT_MASK4_REG 0x43 77 #define AB8500_IT_MASK5_REG 0x44 78 #define AB8500_IT_MASK6_REG 0x45 79 #define AB8500_IT_MASK7_REG 0x46 80 #define AB8500_IT_MASK8_REG 0x47 81 #define AB8500_IT_MASK9_REG 0x48 82 #define AB8500_IT_MASK10_REG 0x49 83 #define AB8500_IT_MASK11_REG 0x4A 84 #define AB8500_IT_MASK12_REG 0x4B 85 #define AB8500_IT_MASK13_REG 0x4C 86 #define AB8500_IT_MASK14_REG 0x4D 87 #define AB8500_IT_MASK15_REG 0x4E 88 #define AB8500_IT_MASK16_REG 0x4F 89 #define AB8500_IT_MASK17_REG 0x50 90 #define AB8500_IT_MASK18_REG 0x51 91 #define AB8500_IT_MASK19_REG 0x52 92 #define AB8500_IT_MASK20_REG 0x53 93 #define AB8500_IT_MASK21_REG 0x54 94 #define AB8500_IT_MASK22_REG 0x55 95 #define AB8500_IT_MASK23_REG 0x56 96 #define AB8500_IT_MASK24_REG 0x57 97 98 /* 99 * latch hierarchy registers 100 */ 101 #define AB8500_IT_LATCHHIER1_REG 0x60 102 #define AB8500_IT_LATCHHIER2_REG 0x61 103 #define AB8500_IT_LATCHHIER3_REG 0x62 104 105 #define AB8500_IT_LATCHHIER_NUM 3 106 107 #define AB8500_REV_REG 0x80 108 #define AB8500_IC_NAME_REG 0x82 109 #define AB8500_SWITCH_OFF_STATUS 0x00 110 111 #define AB8500_TURN_ON_STATUS 0x00 112 113 static bool no_bm; /* No battery management */ 114 module_param(no_bm, bool, S_IRUGO); 115 116 #define AB9540_MODEM_CTRL2_REG 0x23 117 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2) 118 119 /* 120 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt 121 * numbers are indexed into this array with (num / 8). The interupts are 122 * defined in linux/mfd/ab8500.h 123 * 124 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at 125 * offset 0. 126 */ 127 /* AB8500 support */ 128 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = { 129 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 130 }; 131 132 /* AB9540 support */ 133 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = { 134 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24, 135 }; 136 137 static const char ab8500_version_str[][7] = { 138 [AB8500_VERSION_AB8500] = "AB8500", 139 [AB8500_VERSION_AB8505] = "AB8505", 140 [AB8500_VERSION_AB9540] = "AB9540", 141 [AB8500_VERSION_AB8540] = "AB8540", 142 }; 143 144 static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data) 145 { 146 int ret; 147 148 ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1); 149 if (ret < 0) 150 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); 151 return ret; 152 } 153 154 static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask, 155 u8 data) 156 { 157 int ret; 158 159 ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 160 &mask, 1); 161 if (ret < 0) 162 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); 163 return ret; 164 } 165 166 static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr) 167 { 168 int ret; 169 u8 data; 170 171 ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1); 172 if (ret < 0) { 173 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); 174 return ret; 175 } 176 return (int)data; 177 } 178 179 static int ab8500_get_chip_id(struct device *dev) 180 { 181 struct ab8500 *ab8500; 182 183 if (!dev) 184 return -EINVAL; 185 ab8500 = dev_get_drvdata(dev->parent); 186 return ab8500 ? (int)ab8500->chip_id : -EINVAL; 187 } 188 189 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank, 190 u8 reg, u8 data) 191 { 192 int ret; 193 /* 194 * Put the u8 bank and u8 register together into a an u16. 195 * The bank on higher 8 bits and register in lower 8 bits. 196 * */ 197 u16 addr = ((u16)bank) << 8 | reg; 198 199 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data); 200 201 mutex_lock(&ab8500->lock); 202 203 ret = ab8500->write(ab8500, addr, data); 204 if (ret < 0) 205 dev_err(ab8500->dev, "failed to write reg %#x: %d\n", 206 addr, ret); 207 mutex_unlock(&ab8500->lock); 208 209 return ret; 210 } 211 212 static int ab8500_set_register(struct device *dev, u8 bank, 213 u8 reg, u8 value) 214 { 215 int ret; 216 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); 217 218 atomic_inc(&ab8500->transfer_ongoing); 219 ret = set_register_interruptible(ab8500, bank, reg, value); 220 atomic_dec(&ab8500->transfer_ongoing); 221 return ret; 222 } 223 224 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank, 225 u8 reg, u8 *value) 226 { 227 int ret; 228 /* put the u8 bank and u8 reg together into a an u16. 229 * bank on higher 8 bits and reg in lower */ 230 u16 addr = ((u16)bank) << 8 | reg; 231 232 mutex_lock(&ab8500->lock); 233 234 ret = ab8500->read(ab8500, addr); 235 if (ret < 0) 236 dev_err(ab8500->dev, "failed to read reg %#x: %d\n", 237 addr, ret); 238 else 239 *value = ret; 240 241 mutex_unlock(&ab8500->lock); 242 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret); 243 244 return ret; 245 } 246 247 static int ab8500_get_register(struct device *dev, u8 bank, 248 u8 reg, u8 *value) 249 { 250 int ret; 251 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); 252 253 atomic_inc(&ab8500->transfer_ongoing); 254 ret = get_register_interruptible(ab8500, bank, reg, value); 255 atomic_dec(&ab8500->transfer_ongoing); 256 return ret; 257 } 258 259 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank, 260 u8 reg, u8 bitmask, u8 bitvalues) 261 { 262 int ret; 263 /* put the u8 bank and u8 reg together into a an u16. 264 * bank on higher 8 bits and reg in lower */ 265 u16 addr = ((u16)bank) << 8 | reg; 266 267 mutex_lock(&ab8500->lock); 268 269 if (ab8500->write_masked == NULL) { 270 u8 data; 271 272 ret = ab8500->read(ab8500, addr); 273 if (ret < 0) { 274 dev_err(ab8500->dev, "failed to read reg %#x: %d\n", 275 addr, ret); 276 goto out; 277 } 278 279 data = (u8)ret; 280 data = (~bitmask & data) | (bitmask & bitvalues); 281 282 ret = ab8500->write(ab8500, addr, data); 283 if (ret < 0) 284 dev_err(ab8500->dev, "failed to write reg %#x: %d\n", 285 addr, ret); 286 287 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, 288 data); 289 goto out; 290 } 291 ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues); 292 if (ret < 0) 293 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr, 294 ret); 295 out: 296 mutex_unlock(&ab8500->lock); 297 return ret; 298 } 299 300 static int ab8500_mask_and_set_register(struct device *dev, 301 u8 bank, u8 reg, u8 bitmask, u8 bitvalues) 302 { 303 int ret; 304 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); 305 306 atomic_inc(&ab8500->transfer_ongoing); 307 ret= mask_and_set_register_interruptible(ab8500, bank, reg, 308 bitmask, bitvalues); 309 atomic_dec(&ab8500->transfer_ongoing); 310 return ret; 311 } 312 313 static struct abx500_ops ab8500_ops = { 314 .get_chip_id = ab8500_get_chip_id, 315 .get_register = ab8500_get_register, 316 .set_register = ab8500_set_register, 317 .get_register_page = NULL, 318 .set_register_page = NULL, 319 .mask_and_set_register = ab8500_mask_and_set_register, 320 .event_registers_startup_state_get = NULL, 321 .startup_irq_enabled = NULL, 322 }; 323 324 static void ab8500_irq_lock(struct irq_data *data) 325 { 326 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 327 328 mutex_lock(&ab8500->irq_lock); 329 atomic_inc(&ab8500->transfer_ongoing); 330 } 331 332 static void ab8500_irq_sync_unlock(struct irq_data *data) 333 { 334 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 335 int i; 336 337 for (i = 0; i < ab8500->mask_size; i++) { 338 u8 old = ab8500->oldmask[i]; 339 u8 new = ab8500->mask[i]; 340 int reg; 341 342 if (new == old) 343 continue; 344 345 /* 346 * Interrupt register 12 doesn't exist prior to AB8500 version 347 * 2.0 348 */ 349 if (ab8500->irq_reg_offset[i] == 11 && 350 is_ab8500_1p1_or_earlier(ab8500)) 351 continue; 352 353 ab8500->oldmask[i] = new; 354 355 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i]; 356 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new); 357 } 358 atomic_dec(&ab8500->transfer_ongoing); 359 mutex_unlock(&ab8500->irq_lock); 360 } 361 362 static void ab8500_irq_mask(struct irq_data *data) 363 { 364 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 365 int offset = data->hwirq; 366 int index = offset / 8; 367 int mask = 1 << (offset % 8); 368 369 ab8500->mask[index] |= mask; 370 } 371 372 static void ab8500_irq_unmask(struct irq_data *data) 373 { 374 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 375 int offset = data->hwirq; 376 int index = offset / 8; 377 int mask = 1 << (offset % 8); 378 379 ab8500->mask[index] &= ~mask; 380 } 381 382 static struct irq_chip ab8500_irq_chip = { 383 .name = "ab8500", 384 .irq_bus_lock = ab8500_irq_lock, 385 .irq_bus_sync_unlock = ab8500_irq_sync_unlock, 386 .irq_mask = ab8500_irq_mask, 387 .irq_disable = ab8500_irq_mask, 388 .irq_unmask = ab8500_irq_unmask, 389 }; 390 391 static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500, 392 int latch_offset, u8 latch_val) 393 { 394 int int_bit = __ffs(latch_val); 395 int line, i; 396 397 do { 398 int_bit = __ffs(latch_val); 399 400 for (i = 0; i < ab8500->mask_size; i++) 401 if (ab8500->irq_reg_offset[i] == latch_offset) 402 break; 403 404 if (i >= ab8500->mask_size) { 405 dev_err(ab8500->dev, "Register offset 0x%2x not declared\n", 406 latch_offset); 407 return -ENXIO; 408 } 409 410 line = (i << 3) + int_bit; 411 latch_val &= ~(1 << int_bit); 412 413 handle_nested_irq(ab8500->irq_base + line); 414 } while (latch_val); 415 416 return 0; 417 } 418 419 static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500, 420 int hier_offset, u8 hier_val) 421 { 422 int latch_bit, status; 423 u8 latch_offset, latch_val; 424 425 do { 426 latch_bit = __ffs(hier_val); 427 latch_offset = (hier_offset << 3) + latch_bit; 428 429 /* Fix inconsistent ITFromLatch25 bit mapping... */ 430 if (unlikely(latch_offset == 17)) 431 latch_offset = 24; 432 433 status = get_register_interruptible(ab8500, 434 AB8500_INTERRUPT, 435 AB8500_IT_LATCH1_REG + latch_offset, 436 &latch_val); 437 if (status < 0 || latch_val == 0) 438 goto discard; 439 440 status = ab8500_handle_hierarchical_line(ab8500, 441 latch_offset, latch_val); 442 if (status < 0) 443 return status; 444 discard: 445 hier_val &= ~(1 << latch_bit); 446 } while (hier_val); 447 448 return 0; 449 } 450 451 static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev) 452 { 453 struct ab8500 *ab8500 = dev; 454 u8 i; 455 456 dev_vdbg(ab8500->dev, "interrupt\n"); 457 458 /* Hierarchical interrupt version */ 459 for (i = 0; i < AB8500_IT_LATCHHIER_NUM; i++) { 460 int status; 461 u8 hier_val; 462 463 status = get_register_interruptible(ab8500, AB8500_INTERRUPT, 464 AB8500_IT_LATCHHIER1_REG + i, &hier_val); 465 if (status < 0 || hier_val == 0) 466 continue; 467 468 status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val); 469 if (status < 0) 470 break; 471 } 472 return IRQ_HANDLED; 473 } 474 475 static irqreturn_t ab8500_irq(int irq, void *dev) 476 { 477 struct ab8500 *ab8500 = dev; 478 int i; 479 480 dev_vdbg(ab8500->dev, "interrupt\n"); 481 482 atomic_inc(&ab8500->transfer_ongoing); 483 484 for (i = 0; i < ab8500->mask_size; i++) { 485 int regoffset = ab8500->irq_reg_offset[i]; 486 int status; 487 u8 value; 488 489 /* 490 * Interrupt register 12 doesn't exist prior to AB8500 version 491 * 2.0 492 */ 493 if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500)) 494 continue; 495 496 status = get_register_interruptible(ab8500, AB8500_INTERRUPT, 497 AB8500_IT_LATCH1_REG + regoffset, &value); 498 if (status < 0 || value == 0) 499 continue; 500 501 do { 502 int bit = __ffs(value); 503 int line = i * 8 + bit; 504 505 handle_nested_irq(ab8500->irq_base + line); 506 value &= ~(1 << bit); 507 508 } while (value); 509 } 510 atomic_dec(&ab8500->transfer_ongoing); 511 return IRQ_HANDLED; 512 } 513 514 /** 515 * ab8500_irq_get_virq(): Map an interrupt on a chip to a virtual IRQ 516 * 517 * @ab8500: ab8500_irq controller to operate on. 518 * @irq: index of the interrupt requested in the chip IRQs 519 * 520 * Useful for drivers to request their own IRQs. 521 */ 522 int ab8500_irq_get_virq(struct ab8500 *ab8500, int irq) 523 { 524 if (!ab8500) 525 return -EINVAL; 526 527 return irq_create_mapping(ab8500->domain, irq); 528 } 529 EXPORT_SYMBOL_GPL(ab8500_irq_get_virq); 530 531 static int ab8500_irq_map(struct irq_domain *d, unsigned int virq, 532 irq_hw_number_t hwirq) 533 { 534 struct ab8500 *ab8500 = d->host_data; 535 536 if (!ab8500) 537 return -EINVAL; 538 539 irq_set_chip_data(virq, ab8500); 540 irq_set_chip_and_handler(virq, &ab8500_irq_chip, 541 handle_simple_irq); 542 irq_set_nested_thread(virq, 1); 543 #ifdef CONFIG_ARM 544 set_irq_flags(virq, IRQF_VALID); 545 #else 546 irq_set_noprobe(virq); 547 #endif 548 549 return 0; 550 } 551 552 static struct irq_domain_ops ab8500_irq_ops = { 553 .map = ab8500_irq_map, 554 .xlate = irq_domain_xlate_twocell, 555 }; 556 557 static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np) 558 { 559 int num_irqs; 560 561 if (is_ab9540(ab8500)) 562 num_irqs = AB9540_NR_IRQS; 563 else if (is_ab8505(ab8500)) 564 num_irqs = AB8505_NR_IRQS; 565 else 566 num_irqs = AB8500_NR_IRQS; 567 568 if (ab8500->irq_base) { 569 ab8500->domain = irq_domain_add_legacy( 570 NULL, num_irqs, ab8500->irq_base, 571 0, &ab8500_irq_ops, ab8500); 572 } 573 else { 574 ab8500->domain = irq_domain_add_linear( 575 np, num_irqs, &ab8500_irq_ops, ab8500); 576 } 577 578 if (!ab8500->domain) { 579 dev_err(ab8500->dev, "Failed to create irqdomain\n"); 580 return -ENOSYS; 581 } 582 583 return 0; 584 } 585 586 int ab8500_suspend(struct ab8500 *ab8500) 587 { 588 if (atomic_read(&ab8500->transfer_ongoing)) 589 return -EINVAL; 590 else 591 return 0; 592 } 593 594 /* AB8500 GPIO Resources */ 595 static struct resource __devinitdata ab8500_gpio_resources[] = { 596 { 597 .name = "GPIO_INT6", 598 .start = AB8500_INT_GPIO6R, 599 .end = AB8500_INT_GPIO41F, 600 .flags = IORESOURCE_IRQ, 601 } 602 }; 603 604 /* AB9540 GPIO Resources */ 605 static struct resource __devinitdata ab9540_gpio_resources[] = { 606 { 607 .name = "GPIO_INT6", 608 .start = AB8500_INT_GPIO6R, 609 .end = AB8500_INT_GPIO41F, 610 .flags = IORESOURCE_IRQ, 611 }, 612 { 613 .name = "GPIO_INT14", 614 .start = AB9540_INT_GPIO50R, 615 .end = AB9540_INT_GPIO54R, 616 .flags = IORESOURCE_IRQ, 617 }, 618 { 619 .name = "GPIO_INT15", 620 .start = AB9540_INT_GPIO50F, 621 .end = AB9540_INT_GPIO54F, 622 .flags = IORESOURCE_IRQ, 623 } 624 }; 625 626 static struct resource __devinitdata ab8500_gpadc_resources[] = { 627 { 628 .name = "HW_CONV_END", 629 .start = AB8500_INT_GP_HW_ADC_CONV_END, 630 .end = AB8500_INT_GP_HW_ADC_CONV_END, 631 .flags = IORESOURCE_IRQ, 632 }, 633 { 634 .name = "SW_CONV_END", 635 .start = AB8500_INT_GP_SW_ADC_CONV_END, 636 .end = AB8500_INT_GP_SW_ADC_CONV_END, 637 .flags = IORESOURCE_IRQ, 638 }, 639 }; 640 641 static struct resource __devinitdata ab8500_rtc_resources[] = { 642 { 643 .name = "60S", 644 .start = AB8500_INT_RTC_60S, 645 .end = AB8500_INT_RTC_60S, 646 .flags = IORESOURCE_IRQ, 647 }, 648 { 649 .name = "ALARM", 650 .start = AB8500_INT_RTC_ALARM, 651 .end = AB8500_INT_RTC_ALARM, 652 .flags = IORESOURCE_IRQ, 653 }, 654 }; 655 656 static struct resource __devinitdata ab8500_poweronkey_db_resources[] = { 657 { 658 .name = "ONKEY_DBF", 659 .start = AB8500_INT_PON_KEY1DB_F, 660 .end = AB8500_INT_PON_KEY1DB_F, 661 .flags = IORESOURCE_IRQ, 662 }, 663 { 664 .name = "ONKEY_DBR", 665 .start = AB8500_INT_PON_KEY1DB_R, 666 .end = AB8500_INT_PON_KEY1DB_R, 667 .flags = IORESOURCE_IRQ, 668 }, 669 }; 670 671 static struct resource __devinitdata ab8500_av_acc_detect_resources[] = { 672 { 673 .name = "ACC_DETECT_1DB_F", 674 .start = AB8500_INT_ACC_DETECT_1DB_F, 675 .end = AB8500_INT_ACC_DETECT_1DB_F, 676 .flags = IORESOURCE_IRQ, 677 }, 678 { 679 .name = "ACC_DETECT_1DB_R", 680 .start = AB8500_INT_ACC_DETECT_1DB_R, 681 .end = AB8500_INT_ACC_DETECT_1DB_R, 682 .flags = IORESOURCE_IRQ, 683 }, 684 { 685 .name = "ACC_DETECT_21DB_F", 686 .start = AB8500_INT_ACC_DETECT_21DB_F, 687 .end = AB8500_INT_ACC_DETECT_21DB_F, 688 .flags = IORESOURCE_IRQ, 689 }, 690 { 691 .name = "ACC_DETECT_21DB_R", 692 .start = AB8500_INT_ACC_DETECT_21DB_R, 693 .end = AB8500_INT_ACC_DETECT_21DB_R, 694 .flags = IORESOURCE_IRQ, 695 }, 696 { 697 .name = "ACC_DETECT_22DB_F", 698 .start = AB8500_INT_ACC_DETECT_22DB_F, 699 .end = AB8500_INT_ACC_DETECT_22DB_F, 700 .flags = IORESOURCE_IRQ, 701 }, 702 { 703 .name = "ACC_DETECT_22DB_R", 704 .start = AB8500_INT_ACC_DETECT_22DB_R, 705 .end = AB8500_INT_ACC_DETECT_22DB_R, 706 .flags = IORESOURCE_IRQ, 707 }, 708 }; 709 710 static struct resource __devinitdata ab8500_charger_resources[] = { 711 { 712 .name = "MAIN_CH_UNPLUG_DET", 713 .start = AB8500_INT_MAIN_CH_UNPLUG_DET, 714 .end = AB8500_INT_MAIN_CH_UNPLUG_DET, 715 .flags = IORESOURCE_IRQ, 716 }, 717 { 718 .name = "MAIN_CHARGE_PLUG_DET", 719 .start = AB8500_INT_MAIN_CH_PLUG_DET, 720 .end = AB8500_INT_MAIN_CH_PLUG_DET, 721 .flags = IORESOURCE_IRQ, 722 }, 723 { 724 .name = "VBUS_DET_R", 725 .start = AB8500_INT_VBUS_DET_R, 726 .end = AB8500_INT_VBUS_DET_R, 727 .flags = IORESOURCE_IRQ, 728 }, 729 { 730 .name = "VBUS_DET_F", 731 .start = AB8500_INT_VBUS_DET_F, 732 .end = AB8500_INT_VBUS_DET_F, 733 .flags = IORESOURCE_IRQ, 734 }, 735 { 736 .name = "USB_LINK_STATUS", 737 .start = AB8500_INT_USB_LINK_STATUS, 738 .end = AB8500_INT_USB_LINK_STATUS, 739 .flags = IORESOURCE_IRQ, 740 }, 741 { 742 .name = "VBUS_OVV", 743 .start = AB8500_INT_VBUS_OVV, 744 .end = AB8500_INT_VBUS_OVV, 745 .flags = IORESOURCE_IRQ, 746 }, 747 { 748 .name = "USB_CH_TH_PROT_R", 749 .start = AB8500_INT_USB_CH_TH_PROT_R, 750 .end = AB8500_INT_USB_CH_TH_PROT_R, 751 .flags = IORESOURCE_IRQ, 752 }, 753 { 754 .name = "USB_CH_TH_PROT_F", 755 .start = AB8500_INT_USB_CH_TH_PROT_F, 756 .end = AB8500_INT_USB_CH_TH_PROT_F, 757 .flags = IORESOURCE_IRQ, 758 }, 759 { 760 .name = "MAIN_EXT_CH_NOT_OK", 761 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK, 762 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK, 763 .flags = IORESOURCE_IRQ, 764 }, 765 { 766 .name = "MAIN_CH_TH_PROT_R", 767 .start = AB8500_INT_MAIN_CH_TH_PROT_R, 768 .end = AB8500_INT_MAIN_CH_TH_PROT_R, 769 .flags = IORESOURCE_IRQ, 770 }, 771 { 772 .name = "MAIN_CH_TH_PROT_F", 773 .start = AB8500_INT_MAIN_CH_TH_PROT_F, 774 .end = AB8500_INT_MAIN_CH_TH_PROT_F, 775 .flags = IORESOURCE_IRQ, 776 }, 777 { 778 .name = "USB_CHARGER_NOT_OKR", 779 .start = AB8500_INT_USB_CHARGER_NOT_OKR, 780 .end = AB8500_INT_USB_CHARGER_NOT_OKR, 781 .flags = IORESOURCE_IRQ, 782 }, 783 { 784 .name = "CH_WD_EXP", 785 .start = AB8500_INT_CH_WD_EXP, 786 .end = AB8500_INT_CH_WD_EXP, 787 .flags = IORESOURCE_IRQ, 788 }, 789 }; 790 791 static struct resource __devinitdata ab8500_btemp_resources[] = { 792 { 793 .name = "BAT_CTRL_INDB", 794 .start = AB8500_INT_BAT_CTRL_INDB, 795 .end = AB8500_INT_BAT_CTRL_INDB, 796 .flags = IORESOURCE_IRQ, 797 }, 798 { 799 .name = "BTEMP_LOW", 800 .start = AB8500_INT_BTEMP_LOW, 801 .end = AB8500_INT_BTEMP_LOW, 802 .flags = IORESOURCE_IRQ, 803 }, 804 { 805 .name = "BTEMP_HIGH", 806 .start = AB8500_INT_BTEMP_HIGH, 807 .end = AB8500_INT_BTEMP_HIGH, 808 .flags = IORESOURCE_IRQ, 809 }, 810 { 811 .name = "BTEMP_LOW_MEDIUM", 812 .start = AB8500_INT_BTEMP_LOW_MEDIUM, 813 .end = AB8500_INT_BTEMP_LOW_MEDIUM, 814 .flags = IORESOURCE_IRQ, 815 }, 816 { 817 .name = "BTEMP_MEDIUM_HIGH", 818 .start = AB8500_INT_BTEMP_MEDIUM_HIGH, 819 .end = AB8500_INT_BTEMP_MEDIUM_HIGH, 820 .flags = IORESOURCE_IRQ, 821 }, 822 }; 823 824 static struct resource __devinitdata ab8500_fg_resources[] = { 825 { 826 .name = "NCONV_ACCU", 827 .start = AB8500_INT_CCN_CONV_ACC, 828 .end = AB8500_INT_CCN_CONV_ACC, 829 .flags = IORESOURCE_IRQ, 830 }, 831 { 832 .name = "BATT_OVV", 833 .start = AB8500_INT_BATT_OVV, 834 .end = AB8500_INT_BATT_OVV, 835 .flags = IORESOURCE_IRQ, 836 }, 837 { 838 .name = "LOW_BAT_F", 839 .start = AB8500_INT_LOW_BAT_F, 840 .end = AB8500_INT_LOW_BAT_F, 841 .flags = IORESOURCE_IRQ, 842 }, 843 { 844 .name = "LOW_BAT_R", 845 .start = AB8500_INT_LOW_BAT_R, 846 .end = AB8500_INT_LOW_BAT_R, 847 .flags = IORESOURCE_IRQ, 848 }, 849 { 850 .name = "CC_INT_CALIB", 851 .start = AB8500_INT_CC_INT_CALIB, 852 .end = AB8500_INT_CC_INT_CALIB, 853 .flags = IORESOURCE_IRQ, 854 }, 855 { 856 .name = "CCEOC", 857 .start = AB8500_INT_CCEOC, 858 .end = AB8500_INT_CCEOC, 859 .flags = IORESOURCE_IRQ, 860 }, 861 }; 862 863 static struct resource __devinitdata ab8500_chargalg_resources[] = {}; 864 865 #ifdef CONFIG_DEBUG_FS 866 static struct resource __devinitdata ab8500_debug_resources[] = { 867 { 868 .name = "IRQ_FIRST", 869 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK, 870 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK, 871 .flags = IORESOURCE_IRQ, 872 }, 873 { 874 .name = "IRQ_LAST", 875 .start = AB8500_INT_XTAL32K_KO, 876 .end = AB8500_INT_XTAL32K_KO, 877 .flags = IORESOURCE_IRQ, 878 }, 879 }; 880 #endif 881 882 static struct resource __devinitdata ab8500_usb_resources[] = { 883 { 884 .name = "ID_WAKEUP_R", 885 .start = AB8500_INT_ID_WAKEUP_R, 886 .end = AB8500_INT_ID_WAKEUP_R, 887 .flags = IORESOURCE_IRQ, 888 }, 889 { 890 .name = "ID_WAKEUP_F", 891 .start = AB8500_INT_ID_WAKEUP_F, 892 .end = AB8500_INT_ID_WAKEUP_F, 893 .flags = IORESOURCE_IRQ, 894 }, 895 { 896 .name = "VBUS_DET_F", 897 .start = AB8500_INT_VBUS_DET_F, 898 .end = AB8500_INT_VBUS_DET_F, 899 .flags = IORESOURCE_IRQ, 900 }, 901 { 902 .name = "VBUS_DET_R", 903 .start = AB8500_INT_VBUS_DET_R, 904 .end = AB8500_INT_VBUS_DET_R, 905 .flags = IORESOURCE_IRQ, 906 }, 907 { 908 .name = "USB_LINK_STATUS", 909 .start = AB8500_INT_USB_LINK_STATUS, 910 .end = AB8500_INT_USB_LINK_STATUS, 911 .flags = IORESOURCE_IRQ, 912 }, 913 { 914 .name = "USB_ADP_PROBE_PLUG", 915 .start = AB8500_INT_ADP_PROBE_PLUG, 916 .end = AB8500_INT_ADP_PROBE_PLUG, 917 .flags = IORESOURCE_IRQ, 918 }, 919 { 920 .name = "USB_ADP_PROBE_UNPLUG", 921 .start = AB8500_INT_ADP_PROBE_UNPLUG, 922 .end = AB8500_INT_ADP_PROBE_UNPLUG, 923 .flags = IORESOURCE_IRQ, 924 }, 925 }; 926 927 static struct resource __devinitdata ab8505_iddet_resources[] = { 928 { 929 .name = "KeyDeglitch", 930 .start = AB8505_INT_KEYDEGLITCH, 931 .end = AB8505_INT_KEYDEGLITCH, 932 .flags = IORESOURCE_IRQ, 933 }, 934 { 935 .name = "KP", 936 .start = AB8505_INT_KP, 937 .end = AB8505_INT_KP, 938 .flags = IORESOURCE_IRQ, 939 }, 940 { 941 .name = "IKP", 942 .start = AB8505_INT_IKP, 943 .end = AB8505_INT_IKP, 944 .flags = IORESOURCE_IRQ, 945 }, 946 { 947 .name = "IKR", 948 .start = AB8505_INT_IKR, 949 .end = AB8505_INT_IKR, 950 .flags = IORESOURCE_IRQ, 951 }, 952 { 953 .name = "KeyStuck", 954 .start = AB8505_INT_KEYSTUCK, 955 .end = AB8505_INT_KEYSTUCK, 956 .flags = IORESOURCE_IRQ, 957 }, 958 }; 959 960 static struct resource __devinitdata ab8500_temp_resources[] = { 961 { 962 .name = "AB8500_TEMP_WARM", 963 .start = AB8500_INT_TEMP_WARM, 964 .end = AB8500_INT_TEMP_WARM, 965 .flags = IORESOURCE_IRQ, 966 }, 967 }; 968 969 static struct mfd_cell __devinitdata abx500_common_devs[] = { 970 #ifdef CONFIG_DEBUG_FS 971 { 972 .name = "ab8500-debug", 973 .of_compatible = "stericsson,ab8500-debug", 974 .num_resources = ARRAY_SIZE(ab8500_debug_resources), 975 .resources = ab8500_debug_resources, 976 }, 977 #endif 978 { 979 .name = "ab8500-sysctrl", 980 .of_compatible = "stericsson,ab8500-sysctrl", 981 }, 982 { 983 .name = "ab8500-regulator", 984 .of_compatible = "stericsson,ab8500-regulator", 985 }, 986 { 987 .name = "ab8500-gpadc", 988 .of_compatible = "stericsson,ab8500-gpadc", 989 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources), 990 .resources = ab8500_gpadc_resources, 991 }, 992 { 993 .name = "ab8500-rtc", 994 .of_compatible = "stericsson,ab8500-rtc", 995 .num_resources = ARRAY_SIZE(ab8500_rtc_resources), 996 .resources = ab8500_rtc_resources, 997 }, 998 { 999 .name = "ab8500-acc-det", 1000 .of_compatible = "stericsson,ab8500-acc-det", 1001 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources), 1002 .resources = ab8500_av_acc_detect_resources, 1003 }, 1004 { 1005 .name = "ab8500-poweron-key", 1006 .of_compatible = "stericsson,ab8500-poweron-key", 1007 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources), 1008 .resources = ab8500_poweronkey_db_resources, 1009 }, 1010 { 1011 .name = "ab8500-pwm", 1012 .of_compatible = "stericsson,ab8500-pwm", 1013 .id = 1, 1014 }, 1015 { 1016 .name = "ab8500-pwm", 1017 .of_compatible = "stericsson,ab8500-pwm", 1018 .id = 2, 1019 }, 1020 { 1021 .name = "ab8500-pwm", 1022 .of_compatible = "stericsson,ab8500-pwm", 1023 .id = 3, 1024 }, 1025 { 1026 .name = "ab8500-leds", 1027 .of_compatible = "stericsson,ab8500-leds", 1028 }, 1029 { 1030 .name = "ab8500-denc", 1031 .of_compatible = "stericsson,ab8500-denc", 1032 }, 1033 { 1034 .name = "ab8500-temp", 1035 .of_compatible = "stericsson,ab8500-temp", 1036 .num_resources = ARRAY_SIZE(ab8500_temp_resources), 1037 .resources = ab8500_temp_resources, 1038 }, 1039 }; 1040 1041 static struct mfd_cell __devinitdata ab8500_bm_devs[] = { 1042 { 1043 .name = "ab8500-charger", 1044 .num_resources = ARRAY_SIZE(ab8500_charger_resources), 1045 .resources = ab8500_charger_resources, 1046 }, 1047 { 1048 .name = "ab8500-btemp", 1049 .num_resources = ARRAY_SIZE(ab8500_btemp_resources), 1050 .resources = ab8500_btemp_resources, 1051 }, 1052 { 1053 .name = "ab8500-fg", 1054 .num_resources = ARRAY_SIZE(ab8500_fg_resources), 1055 .resources = ab8500_fg_resources, 1056 }, 1057 { 1058 .name = "ab8500-chargalg", 1059 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources), 1060 .resources = ab8500_chargalg_resources, 1061 }, 1062 }; 1063 1064 static struct mfd_cell __devinitdata ab8500_devs[] = { 1065 { 1066 .name = "ab8500-gpio", 1067 .of_compatible = "stericsson,ab8500-gpio", 1068 .num_resources = ARRAY_SIZE(ab8500_gpio_resources), 1069 .resources = ab8500_gpio_resources, 1070 }, 1071 { 1072 .name = "ab8500-usb", 1073 .of_compatible = "stericsson,ab8500-usb", 1074 .num_resources = ARRAY_SIZE(ab8500_usb_resources), 1075 .resources = ab8500_usb_resources, 1076 }, 1077 { 1078 .name = "ab8500-codec", 1079 }, 1080 }; 1081 1082 static struct mfd_cell __devinitdata ab9540_devs[] = { 1083 { 1084 .name = "ab8500-gpio", 1085 .num_resources = ARRAY_SIZE(ab9540_gpio_resources), 1086 .resources = ab9540_gpio_resources, 1087 }, 1088 { 1089 .name = "ab9540-usb", 1090 .num_resources = ARRAY_SIZE(ab8500_usb_resources), 1091 .resources = ab8500_usb_resources, 1092 }, 1093 { 1094 .name = "ab9540-codec", 1095 }, 1096 }; 1097 1098 /* Device list common to ab9540 and ab8505 */ 1099 static struct mfd_cell __devinitdata ab9540_ab8505_devs[] = { 1100 { 1101 .name = "ab-iddet", 1102 .num_resources = ARRAY_SIZE(ab8505_iddet_resources), 1103 .resources = ab8505_iddet_resources, 1104 }, 1105 }; 1106 1107 static ssize_t show_chip_id(struct device *dev, 1108 struct device_attribute *attr, char *buf) 1109 { 1110 struct ab8500 *ab8500; 1111 1112 ab8500 = dev_get_drvdata(dev); 1113 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL); 1114 } 1115 1116 /* 1117 * ab8500 has switched off due to (SWITCH_OFF_STATUS): 1118 * 0x01 Swoff bit programming 1119 * 0x02 Thermal protection activation 1120 * 0x04 Vbat lower then BattOk falling threshold 1121 * 0x08 Watchdog expired 1122 * 0x10 Non presence of 32kHz clock 1123 * 0x20 Battery level lower than power on reset threshold 1124 * 0x40 Power on key 1 pressed longer than 10 seconds 1125 * 0x80 DB8500 thermal shutdown 1126 */ 1127 static ssize_t show_switch_off_status(struct device *dev, 1128 struct device_attribute *attr, char *buf) 1129 { 1130 int ret; 1131 u8 value; 1132 struct ab8500 *ab8500; 1133 1134 ab8500 = dev_get_drvdata(dev); 1135 ret = get_register_interruptible(ab8500, AB8500_RTC, 1136 AB8500_SWITCH_OFF_STATUS, &value); 1137 if (ret < 0) 1138 return ret; 1139 return sprintf(buf, "%#x\n", value); 1140 } 1141 1142 /* 1143 * ab8500 has turned on due to (TURN_ON_STATUS): 1144 * 0x01 PORnVbat 1145 * 0x02 PonKey1dbF 1146 * 0x04 PonKey2dbF 1147 * 0x08 RTCAlarm 1148 * 0x10 MainChDet 1149 * 0x20 VbusDet 1150 * 0x40 UsbIDDetect 1151 * 0x80 Reserved 1152 */ 1153 static ssize_t show_turn_on_status(struct device *dev, 1154 struct device_attribute *attr, char *buf) 1155 { 1156 int ret; 1157 u8 value; 1158 struct ab8500 *ab8500; 1159 1160 ab8500 = dev_get_drvdata(dev); 1161 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK, 1162 AB8500_TURN_ON_STATUS, &value); 1163 if (ret < 0) 1164 return ret; 1165 return sprintf(buf, "%#x\n", value); 1166 } 1167 1168 static ssize_t show_ab9540_dbbrstn(struct device *dev, 1169 struct device_attribute *attr, char *buf) 1170 { 1171 struct ab8500 *ab8500; 1172 int ret; 1173 u8 value; 1174 1175 ab8500 = dev_get_drvdata(dev); 1176 1177 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2, 1178 AB9540_MODEM_CTRL2_REG, &value); 1179 if (ret < 0) 1180 return ret; 1181 1182 return sprintf(buf, "%d\n", 1183 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0); 1184 } 1185 1186 static ssize_t store_ab9540_dbbrstn(struct device *dev, 1187 struct device_attribute *attr, const char *buf, size_t count) 1188 { 1189 struct ab8500 *ab8500; 1190 int ret = count; 1191 int err; 1192 u8 bitvalues; 1193 1194 ab8500 = dev_get_drvdata(dev); 1195 1196 if (count > 0) { 1197 switch (buf[0]) { 1198 case '0': 1199 bitvalues = 0; 1200 break; 1201 case '1': 1202 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT; 1203 break; 1204 default: 1205 goto exit; 1206 } 1207 1208 err = mask_and_set_register_interruptible(ab8500, 1209 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG, 1210 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues); 1211 if (err) 1212 dev_info(ab8500->dev, 1213 "Failed to set DBBRSTN %c, err %#x\n", 1214 buf[0], err); 1215 } 1216 1217 exit: 1218 return ret; 1219 } 1220 1221 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL); 1222 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL); 1223 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL); 1224 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR, 1225 show_ab9540_dbbrstn, store_ab9540_dbbrstn); 1226 1227 static struct attribute *ab8500_sysfs_entries[] = { 1228 &dev_attr_chip_id.attr, 1229 &dev_attr_switch_off_status.attr, 1230 &dev_attr_turn_on_status.attr, 1231 NULL, 1232 }; 1233 1234 static struct attribute *ab9540_sysfs_entries[] = { 1235 &dev_attr_chip_id.attr, 1236 &dev_attr_switch_off_status.attr, 1237 &dev_attr_turn_on_status.attr, 1238 &dev_attr_dbbrstn.attr, 1239 NULL, 1240 }; 1241 1242 static struct attribute_group ab8500_attr_group = { 1243 .attrs = ab8500_sysfs_entries, 1244 }; 1245 1246 static struct attribute_group ab9540_attr_group = { 1247 .attrs = ab9540_sysfs_entries, 1248 }; 1249 1250 static int __devinit ab8500_probe(struct platform_device *pdev) 1251 { 1252 static char *switch_off_status[] = { 1253 "Swoff bit programming", 1254 "Thermal protection activation", 1255 "Vbat lower then BattOk falling threshold", 1256 "Watchdog expired", 1257 "Non presence of 32kHz clock", 1258 "Battery level lower than power on reset threshold", 1259 "Power on key 1 pressed longer than 10 seconds", 1260 "DB8500 thermal shutdown"}; 1261 struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev); 1262 const struct platform_device_id *platid = platform_get_device_id(pdev); 1263 enum ab8500_version version = AB8500_VERSION_UNDEFINED; 1264 struct device_node *np = pdev->dev.of_node; 1265 struct ab8500 *ab8500; 1266 struct resource *resource; 1267 int ret; 1268 int i; 1269 u8 value; 1270 1271 ab8500 = kzalloc(sizeof *ab8500, GFP_KERNEL); 1272 if (!ab8500) 1273 return -ENOMEM; 1274 1275 if (plat) 1276 ab8500->irq_base = plat->irq_base; 1277 1278 ab8500->dev = &pdev->dev; 1279 1280 resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 1281 if (!resource) { 1282 ret = -ENODEV; 1283 goto out_free_ab8500; 1284 } 1285 1286 ab8500->irq = resource->start; 1287 1288 ab8500->read = ab8500_prcmu_read; 1289 ab8500->write = ab8500_prcmu_write; 1290 ab8500->write_masked = ab8500_prcmu_write_masked; 1291 1292 mutex_init(&ab8500->lock); 1293 mutex_init(&ab8500->irq_lock); 1294 atomic_set(&ab8500->transfer_ongoing, 0); 1295 1296 platform_set_drvdata(pdev, ab8500); 1297 1298 if (platid) 1299 version = platid->driver_data; 1300 1301 if (version != AB8500_VERSION_UNDEFINED) 1302 ab8500->version = version; 1303 else { 1304 ret = get_register_interruptible(ab8500, AB8500_MISC, 1305 AB8500_IC_NAME_REG, &value); 1306 if (ret < 0) 1307 goto out_free_ab8500; 1308 1309 ab8500->version = value; 1310 } 1311 1312 ret = get_register_interruptible(ab8500, AB8500_MISC, 1313 AB8500_REV_REG, &value); 1314 if (ret < 0) 1315 goto out_free_ab8500; 1316 1317 ab8500->chip_id = value; 1318 1319 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n", 1320 ab8500_version_str[ab8500->version], 1321 ab8500->chip_id >> 4, 1322 ab8500->chip_id & 0x0F); 1323 1324 /* Configure AB8500 or AB9540 IRQ */ 1325 if (is_ab9540(ab8500) || is_ab8505(ab8500)) { 1326 ab8500->mask_size = AB9540_NUM_IRQ_REGS; 1327 ab8500->irq_reg_offset = ab9540_irq_regoffset; 1328 } else { 1329 ab8500->mask_size = AB8500_NUM_IRQ_REGS; 1330 ab8500->irq_reg_offset = ab8500_irq_regoffset; 1331 } 1332 ab8500->mask = kzalloc(ab8500->mask_size, GFP_KERNEL); 1333 if (!ab8500->mask) 1334 return -ENOMEM; 1335 ab8500->oldmask = kzalloc(ab8500->mask_size, GFP_KERNEL); 1336 if (!ab8500->oldmask) { 1337 ret = -ENOMEM; 1338 goto out_freemask; 1339 } 1340 /* 1341 * ab8500 has switched off due to (SWITCH_OFF_STATUS): 1342 * 0x01 Swoff bit programming 1343 * 0x02 Thermal protection activation 1344 * 0x04 Vbat lower then BattOk falling threshold 1345 * 0x08 Watchdog expired 1346 * 0x10 Non presence of 32kHz clock 1347 * 0x20 Battery level lower than power on reset threshold 1348 * 0x40 Power on key 1 pressed longer than 10 seconds 1349 * 0x80 DB8500 thermal shutdown 1350 */ 1351 1352 ret = get_register_interruptible(ab8500, AB8500_RTC, 1353 AB8500_SWITCH_OFF_STATUS, &value); 1354 if (ret < 0) 1355 return ret; 1356 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value); 1357 1358 if (value) { 1359 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) { 1360 if (value & 1) 1361 printk(KERN_CONT " \"%s\"", 1362 switch_off_status[i]); 1363 value = value >> 1; 1364 1365 } 1366 printk(KERN_CONT "\n"); 1367 } else { 1368 printk(KERN_CONT " None\n"); 1369 } 1370 1371 if (plat && plat->init) 1372 plat->init(ab8500); 1373 1374 /* Clear and mask all interrupts */ 1375 for (i = 0; i < ab8500->mask_size; i++) { 1376 /* 1377 * Interrupt register 12 doesn't exist prior to AB8500 version 1378 * 2.0 1379 */ 1380 if (ab8500->irq_reg_offset[i] == 11 && 1381 is_ab8500_1p1_or_earlier(ab8500)) 1382 continue; 1383 1384 get_register_interruptible(ab8500, AB8500_INTERRUPT, 1385 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i], 1386 &value); 1387 set_register_interruptible(ab8500, AB8500_INTERRUPT, 1388 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff); 1389 } 1390 1391 ret = abx500_register_ops(ab8500->dev, &ab8500_ops); 1392 if (ret) 1393 goto out_freeoldmask; 1394 1395 for (i = 0; i < ab8500->mask_size; i++) 1396 ab8500->mask[i] = ab8500->oldmask[i] = 0xff; 1397 1398 ret = ab8500_irq_init(ab8500, np); 1399 if (ret) 1400 goto out_freeoldmask; 1401 1402 /* Activate this feature only in ab9540 */ 1403 /* till tests are done on ab8500 1p2 or later*/ 1404 if (is_ab9540(ab8500)) { 1405 ret = request_threaded_irq(ab8500->irq, NULL, 1406 ab8500_hierarchical_irq, 1407 IRQF_ONESHOT | IRQF_NO_SUSPEND, 1408 "ab8500", ab8500); 1409 } 1410 else { 1411 ret = request_threaded_irq(ab8500->irq, NULL, 1412 ab8500_irq, 1413 IRQF_ONESHOT | IRQF_NO_SUSPEND, 1414 "ab8500", ab8500); 1415 if (ret) 1416 goto out_freeoldmask; 1417 } 1418 1419 ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs, 1420 ARRAY_SIZE(abx500_common_devs), NULL, 1421 ab8500->irq_base, ab8500->domain); 1422 if (ret) 1423 goto out_freeirq; 1424 1425 if (is_ab9540(ab8500)) 1426 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs, 1427 ARRAY_SIZE(ab9540_devs), NULL, 1428 ab8500->irq_base, ab8500->domain); 1429 else 1430 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs, 1431 ARRAY_SIZE(ab8500_devs), NULL, 1432 ab8500->irq_base, ab8500->domain); 1433 if (ret) 1434 goto out_freeirq; 1435 1436 if (is_ab9540(ab8500) || is_ab8505(ab8500)) 1437 ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs, 1438 ARRAY_SIZE(ab9540_ab8505_devs), NULL, 1439 ab8500->irq_base, ab8500->domain); 1440 if (ret) 1441 goto out_freeirq; 1442 1443 if (!no_bm) { 1444 /* Add battery management devices */ 1445 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs, 1446 ARRAY_SIZE(ab8500_bm_devs), NULL, 1447 ab8500->irq_base, ab8500->domain); 1448 if (ret) 1449 dev_err(ab8500->dev, "error adding bm devices\n"); 1450 } 1451 1452 if (is_ab9540(ab8500)) 1453 ret = sysfs_create_group(&ab8500->dev->kobj, 1454 &ab9540_attr_group); 1455 else 1456 ret = sysfs_create_group(&ab8500->dev->kobj, 1457 &ab8500_attr_group); 1458 if (ret) 1459 dev_err(ab8500->dev, "error creating sysfs entries\n"); 1460 1461 return ret; 1462 1463 out_freeirq: 1464 free_irq(ab8500->irq, ab8500); 1465 out_freeoldmask: 1466 kfree(ab8500->oldmask); 1467 out_freemask: 1468 kfree(ab8500->mask); 1469 out_free_ab8500: 1470 kfree(ab8500); 1471 1472 return ret; 1473 } 1474 1475 static int __devexit ab8500_remove(struct platform_device *pdev) 1476 { 1477 struct ab8500 *ab8500 = platform_get_drvdata(pdev); 1478 1479 if (is_ab9540(ab8500)) 1480 sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group); 1481 else 1482 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group); 1483 1484 mfd_remove_devices(ab8500->dev); 1485 free_irq(ab8500->irq, ab8500); 1486 1487 kfree(ab8500->oldmask); 1488 kfree(ab8500->mask); 1489 kfree(ab8500); 1490 1491 return 0; 1492 } 1493 1494 static const struct platform_device_id ab8500_id[] = { 1495 { "ab8500-core", AB8500_VERSION_AB8500 }, 1496 { "ab8505-i2c", AB8500_VERSION_AB8505 }, 1497 { "ab9540-i2c", AB8500_VERSION_AB9540 }, 1498 { "ab8540-i2c", AB8500_VERSION_AB8540 }, 1499 { } 1500 }; 1501 1502 static struct platform_driver ab8500_core_driver = { 1503 .driver = { 1504 .name = "ab8500-core", 1505 .owner = THIS_MODULE, 1506 }, 1507 .probe = ab8500_probe, 1508 .remove = __devexit_p(ab8500_remove), 1509 .id_table = ab8500_id, 1510 }; 1511 1512 static int __init ab8500_core_init(void) 1513 { 1514 return platform_driver_register(&ab8500_core_driver); 1515 } 1516 1517 static void __exit ab8500_core_exit(void) 1518 { 1519 platform_driver_unregister(&ab8500_core_driver); 1520 } 1521 core_initcall(ab8500_core_init); 1522 module_exit(ab8500_core_exit); 1523 1524 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent"); 1525 MODULE_DESCRIPTION("AB8500 MFD core"); 1526 MODULE_LICENSE("GPL v2"); 1527