ab8500-core.c revision 4aef72dbb2e8997e627dd94ae2b9109dc09fffaa
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 113static bool no_bm; /* No battery management */ 114module_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 */ 128static 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 */ 133static 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 137static 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 144static 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 154static 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 166static 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 179static 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 189static 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 212static 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 224static 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 247static 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 259static 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); 295out: 296 mutex_unlock(&ab8500->lock); 297 return ret; 298} 299 300static 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 313static 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 324static 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 332static 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 362static 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 372static 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 382static 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 391static 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 419static 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; 444discard: 445 hier_val &= ~(1 << latch_bit); 446 } while (hier_val); 447 448 return 0; 449} 450 451static 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/** 476 * ab8500_irq_get_virq(): Map an interrupt on a chip to a virtual IRQ 477 * 478 * @ab8500: ab8500_irq controller to operate on. 479 * @irq: index of the interrupt requested in the chip IRQs 480 * 481 * Useful for drivers to request their own IRQs. 482 */ 483static int ab8500_irq_get_virq(struct ab8500 *ab8500, int irq) 484{ 485 if (!ab8500) 486 return -EINVAL; 487 488 return irq_create_mapping(ab8500->domain, irq); 489} 490 491static irqreturn_t ab8500_irq(int irq, void *dev) 492{ 493 struct ab8500 *ab8500 = dev; 494 int i; 495 496 dev_vdbg(ab8500->dev, "interrupt\n"); 497 498 atomic_inc(&ab8500->transfer_ongoing); 499 500 for (i = 0; i < ab8500->mask_size; i++) { 501 int regoffset = ab8500->irq_reg_offset[i]; 502 int status; 503 u8 value; 504 505 /* 506 * Interrupt register 12 doesn't exist prior to AB8500 version 507 * 2.0 508 */ 509 if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500)) 510 continue; 511 512 status = get_register_interruptible(ab8500, AB8500_INTERRUPT, 513 AB8500_IT_LATCH1_REG + regoffset, &value); 514 if (status < 0 || value == 0) 515 continue; 516 517 do { 518 int bit = __ffs(value); 519 int line = i * 8 + bit; 520 int virq = ab8500_irq_get_virq(ab8500, line); 521 522 handle_nested_irq(virq); 523 value &= ~(1 << bit); 524 525 } while (value); 526 } 527 atomic_dec(&ab8500->transfer_ongoing); 528 return IRQ_HANDLED; 529} 530 531static 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 552static struct irq_domain_ops ab8500_irq_ops = { 553 .map = ab8500_irq_map, 554 .xlate = irq_domain_xlate_twocell, 555}; 556 557static 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 586int 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 */ 595static 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 */ 605static 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 626static 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 641static 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 656static 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 671static 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 710static 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 791static 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 824static 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 863static struct resource __devinitdata ab8500_chargalg_resources[] = {}; 864 865#ifdef CONFIG_DEBUG_FS 866static 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 882static 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 927static 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 960static 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 969static 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 1041static struct mfd_cell __devinitdata ab8500_bm_devs[] = { 1042 { 1043 .name = "ab8500-charger", 1044 .of_compatible = "stericsson,ab8500-charger", 1045 .num_resources = ARRAY_SIZE(ab8500_charger_resources), 1046 .resources = ab8500_charger_resources, 1047#ifndef CONFIG_OF 1048 .platform_data = &ab8500_bm_data, 1049 .pdata_size = sizeof(ab8500_bm_data), 1050#endif 1051 }, 1052 { 1053 .name = "ab8500-btemp", 1054 .of_compatible = "stericsson,ab8500-btemp", 1055 .num_resources = ARRAY_SIZE(ab8500_btemp_resources), 1056 .resources = ab8500_btemp_resources, 1057#ifndef CONFIG_OF 1058 .platform_data = &ab8500_bm_data, 1059 .pdata_size = sizeof(ab8500_bm_data), 1060#endif 1061 }, 1062 { 1063 .name = "ab8500-fg", 1064 .of_compatible = "stericsson,ab8500-fg", 1065 .num_resources = ARRAY_SIZE(ab8500_fg_resources), 1066 .resources = ab8500_fg_resources, 1067#ifndef CONFIG_OF 1068 .platform_data = &ab8500_bm_data, 1069 .pdata_size = sizeof(ab8500_bm_data), 1070#endif 1071 }, 1072 { 1073 .name = "ab8500-chargalg", 1074 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources), 1075 .resources = ab8500_chargalg_resources, 1076 }, 1077}; 1078 1079static struct mfd_cell __devinitdata ab8500_devs[] = { 1080 { 1081 .name = "ab8500-gpio", 1082 .of_compatible = "stericsson,ab8500-gpio", 1083 .num_resources = ARRAY_SIZE(ab8500_gpio_resources), 1084 .resources = ab8500_gpio_resources, 1085 }, 1086 { 1087 .name = "ab8500-usb", 1088 .of_compatible = "stericsson,ab8500-usb", 1089 .num_resources = ARRAY_SIZE(ab8500_usb_resources), 1090 .resources = ab8500_usb_resources, 1091 }, 1092 { 1093 .name = "ab8500-codec", 1094 .of_compatible = "stericsson,ab8500-codec", 1095 }, 1096}; 1097 1098static struct mfd_cell __devinitdata ab9540_devs[] = { 1099 { 1100 .name = "ab8500-gpio", 1101 .num_resources = ARRAY_SIZE(ab9540_gpio_resources), 1102 .resources = ab9540_gpio_resources, 1103 }, 1104 { 1105 .name = "ab9540-usb", 1106 .num_resources = ARRAY_SIZE(ab8500_usb_resources), 1107 .resources = ab8500_usb_resources, 1108 }, 1109 { 1110 .name = "ab9540-codec", 1111 }, 1112}; 1113 1114/* Device list common to ab9540 and ab8505 */ 1115static struct mfd_cell __devinitdata ab9540_ab8505_devs[] = { 1116 { 1117 .name = "ab-iddet", 1118 .num_resources = ARRAY_SIZE(ab8505_iddet_resources), 1119 .resources = ab8505_iddet_resources, 1120 }, 1121}; 1122 1123static ssize_t show_chip_id(struct device *dev, 1124 struct device_attribute *attr, char *buf) 1125{ 1126 struct ab8500 *ab8500; 1127 1128 ab8500 = dev_get_drvdata(dev); 1129 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL); 1130} 1131 1132/* 1133 * ab8500 has switched off due to (SWITCH_OFF_STATUS): 1134 * 0x01 Swoff bit programming 1135 * 0x02 Thermal protection activation 1136 * 0x04 Vbat lower then BattOk falling threshold 1137 * 0x08 Watchdog expired 1138 * 0x10 Non presence of 32kHz clock 1139 * 0x20 Battery level lower than power on reset threshold 1140 * 0x40 Power on key 1 pressed longer than 10 seconds 1141 * 0x80 DB8500 thermal shutdown 1142 */ 1143static ssize_t show_switch_off_status(struct device *dev, 1144 struct device_attribute *attr, char *buf) 1145{ 1146 int ret; 1147 u8 value; 1148 struct ab8500 *ab8500; 1149 1150 ab8500 = dev_get_drvdata(dev); 1151 ret = get_register_interruptible(ab8500, AB8500_RTC, 1152 AB8500_SWITCH_OFF_STATUS, &value); 1153 if (ret < 0) 1154 return ret; 1155 return sprintf(buf, "%#x\n", value); 1156} 1157 1158/* 1159 * ab8500 has turned on due to (TURN_ON_STATUS): 1160 * 0x01 PORnVbat 1161 * 0x02 PonKey1dbF 1162 * 0x04 PonKey2dbF 1163 * 0x08 RTCAlarm 1164 * 0x10 MainChDet 1165 * 0x20 VbusDet 1166 * 0x40 UsbIDDetect 1167 * 0x80 Reserved 1168 */ 1169static ssize_t show_turn_on_status(struct device *dev, 1170 struct device_attribute *attr, char *buf) 1171{ 1172 int ret; 1173 u8 value; 1174 struct ab8500 *ab8500; 1175 1176 ab8500 = dev_get_drvdata(dev); 1177 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK, 1178 AB8500_TURN_ON_STATUS, &value); 1179 if (ret < 0) 1180 return ret; 1181 return sprintf(buf, "%#x\n", value); 1182} 1183 1184static ssize_t show_ab9540_dbbrstn(struct device *dev, 1185 struct device_attribute *attr, char *buf) 1186{ 1187 struct ab8500 *ab8500; 1188 int ret; 1189 u8 value; 1190 1191 ab8500 = dev_get_drvdata(dev); 1192 1193 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2, 1194 AB9540_MODEM_CTRL2_REG, &value); 1195 if (ret < 0) 1196 return ret; 1197 1198 return sprintf(buf, "%d\n", 1199 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0); 1200} 1201 1202static ssize_t store_ab9540_dbbrstn(struct device *dev, 1203 struct device_attribute *attr, const char *buf, size_t count) 1204{ 1205 struct ab8500 *ab8500; 1206 int ret = count; 1207 int err; 1208 u8 bitvalues; 1209 1210 ab8500 = dev_get_drvdata(dev); 1211 1212 if (count > 0) { 1213 switch (buf[0]) { 1214 case '0': 1215 bitvalues = 0; 1216 break; 1217 case '1': 1218 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT; 1219 break; 1220 default: 1221 goto exit; 1222 } 1223 1224 err = mask_and_set_register_interruptible(ab8500, 1225 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG, 1226 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues); 1227 if (err) 1228 dev_info(ab8500->dev, 1229 "Failed to set DBBRSTN %c, err %#x\n", 1230 buf[0], err); 1231 } 1232 1233exit: 1234 return ret; 1235} 1236 1237static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL); 1238static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL); 1239static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL); 1240static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR, 1241 show_ab9540_dbbrstn, store_ab9540_dbbrstn); 1242 1243static struct attribute *ab8500_sysfs_entries[] = { 1244 &dev_attr_chip_id.attr, 1245 &dev_attr_switch_off_status.attr, 1246 &dev_attr_turn_on_status.attr, 1247 NULL, 1248}; 1249 1250static struct attribute *ab9540_sysfs_entries[] = { 1251 &dev_attr_chip_id.attr, 1252 &dev_attr_switch_off_status.attr, 1253 &dev_attr_turn_on_status.attr, 1254 &dev_attr_dbbrstn.attr, 1255 NULL, 1256}; 1257 1258static struct attribute_group ab8500_attr_group = { 1259 .attrs = ab8500_sysfs_entries, 1260}; 1261 1262static struct attribute_group ab9540_attr_group = { 1263 .attrs = ab9540_sysfs_entries, 1264}; 1265 1266static int __devinit ab8500_probe(struct platform_device *pdev) 1267{ 1268 static char *switch_off_status[] = { 1269 "Swoff bit programming", 1270 "Thermal protection activation", 1271 "Vbat lower then BattOk falling threshold", 1272 "Watchdog expired", 1273 "Non presence of 32kHz clock", 1274 "Battery level lower than power on reset threshold", 1275 "Power on key 1 pressed longer than 10 seconds", 1276 "DB8500 thermal shutdown"}; 1277 struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev); 1278 const struct platform_device_id *platid = platform_get_device_id(pdev); 1279 enum ab8500_version version = AB8500_VERSION_UNDEFINED; 1280 struct device_node *np = pdev->dev.of_node; 1281 struct ab8500 *ab8500; 1282 struct resource *resource; 1283 int ret; 1284 int i; 1285 u8 value; 1286 1287 ab8500 = kzalloc(sizeof *ab8500, GFP_KERNEL); 1288 if (!ab8500) 1289 return -ENOMEM; 1290 1291 if (plat) 1292 ab8500->irq_base = plat->irq_base; 1293 1294 ab8500->dev = &pdev->dev; 1295 1296 resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 1297 if (!resource) { 1298 ret = -ENODEV; 1299 goto out_free_ab8500; 1300 } 1301 1302 ab8500->irq = resource->start; 1303 1304 ab8500->read = ab8500_prcmu_read; 1305 ab8500->write = ab8500_prcmu_write; 1306 ab8500->write_masked = ab8500_prcmu_write_masked; 1307 1308 mutex_init(&ab8500->lock); 1309 mutex_init(&ab8500->irq_lock); 1310 atomic_set(&ab8500->transfer_ongoing, 0); 1311 1312 platform_set_drvdata(pdev, ab8500); 1313 1314 if (platid) 1315 version = platid->driver_data; 1316 1317 if (version != AB8500_VERSION_UNDEFINED) 1318 ab8500->version = version; 1319 else { 1320 ret = get_register_interruptible(ab8500, AB8500_MISC, 1321 AB8500_IC_NAME_REG, &value); 1322 if (ret < 0) 1323 goto out_free_ab8500; 1324 1325 ab8500->version = value; 1326 } 1327 1328 ret = get_register_interruptible(ab8500, AB8500_MISC, 1329 AB8500_REV_REG, &value); 1330 if (ret < 0) 1331 goto out_free_ab8500; 1332 1333 ab8500->chip_id = value; 1334 1335 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n", 1336 ab8500_version_str[ab8500->version], 1337 ab8500->chip_id >> 4, 1338 ab8500->chip_id & 0x0F); 1339 1340 /* Configure AB8500 or AB9540 IRQ */ 1341 if (is_ab9540(ab8500) || is_ab8505(ab8500)) { 1342 ab8500->mask_size = AB9540_NUM_IRQ_REGS; 1343 ab8500->irq_reg_offset = ab9540_irq_regoffset; 1344 } else { 1345 ab8500->mask_size = AB8500_NUM_IRQ_REGS; 1346 ab8500->irq_reg_offset = ab8500_irq_regoffset; 1347 } 1348 ab8500->mask = kzalloc(ab8500->mask_size, GFP_KERNEL); 1349 if (!ab8500->mask) 1350 return -ENOMEM; 1351 ab8500->oldmask = kzalloc(ab8500->mask_size, GFP_KERNEL); 1352 if (!ab8500->oldmask) { 1353 ret = -ENOMEM; 1354 goto out_freemask; 1355 } 1356 /* 1357 * ab8500 has switched off due to (SWITCH_OFF_STATUS): 1358 * 0x01 Swoff bit programming 1359 * 0x02 Thermal protection activation 1360 * 0x04 Vbat lower then BattOk falling threshold 1361 * 0x08 Watchdog expired 1362 * 0x10 Non presence of 32kHz clock 1363 * 0x20 Battery level lower than power on reset threshold 1364 * 0x40 Power on key 1 pressed longer than 10 seconds 1365 * 0x80 DB8500 thermal shutdown 1366 */ 1367 1368 ret = get_register_interruptible(ab8500, AB8500_RTC, 1369 AB8500_SWITCH_OFF_STATUS, &value); 1370 if (ret < 0) 1371 return ret; 1372 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value); 1373 1374 if (value) { 1375 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) { 1376 if (value & 1) 1377 printk(KERN_CONT " \"%s\"", 1378 switch_off_status[i]); 1379 value = value >> 1; 1380 1381 } 1382 printk(KERN_CONT "\n"); 1383 } else { 1384 printk(KERN_CONT " None\n"); 1385 } 1386 1387 if (plat && plat->init) 1388 plat->init(ab8500); 1389 1390 /* Clear and mask all interrupts */ 1391 for (i = 0; i < ab8500->mask_size; i++) { 1392 /* 1393 * Interrupt register 12 doesn't exist prior to AB8500 version 1394 * 2.0 1395 */ 1396 if (ab8500->irq_reg_offset[i] == 11 && 1397 is_ab8500_1p1_or_earlier(ab8500)) 1398 continue; 1399 1400 get_register_interruptible(ab8500, AB8500_INTERRUPT, 1401 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i], 1402 &value); 1403 set_register_interruptible(ab8500, AB8500_INTERRUPT, 1404 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff); 1405 } 1406 1407 ret = abx500_register_ops(ab8500->dev, &ab8500_ops); 1408 if (ret) 1409 goto out_freeoldmask; 1410 1411 for (i = 0; i < ab8500->mask_size; i++) 1412 ab8500->mask[i] = ab8500->oldmask[i] = 0xff; 1413 1414 ret = ab8500_irq_init(ab8500, np); 1415 if (ret) 1416 goto out_freeoldmask; 1417 1418 /* Activate this feature only in ab9540 */ 1419 /* till tests are done on ab8500 1p2 or later*/ 1420 if (is_ab9540(ab8500)) { 1421 ret = request_threaded_irq(ab8500->irq, NULL, 1422 ab8500_hierarchical_irq, 1423 IRQF_ONESHOT | IRQF_NO_SUSPEND, 1424 "ab8500", ab8500); 1425 } 1426 else { 1427 ret = request_threaded_irq(ab8500->irq, NULL, 1428 ab8500_irq, 1429 IRQF_ONESHOT | IRQF_NO_SUSPEND, 1430 "ab8500", ab8500); 1431 if (ret) 1432 goto out_freeoldmask; 1433 } 1434 1435 ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs, 1436 ARRAY_SIZE(abx500_common_devs), NULL, 1437 ab8500->irq_base, ab8500->domain); 1438 if (ret) 1439 goto out_freeirq; 1440 1441 if (is_ab9540(ab8500)) 1442 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs, 1443 ARRAY_SIZE(ab9540_devs), NULL, 1444 ab8500->irq_base, ab8500->domain); 1445 else 1446 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs, 1447 ARRAY_SIZE(ab8500_devs), NULL, 1448 ab8500->irq_base, ab8500->domain); 1449 if (ret) 1450 goto out_freeirq; 1451 1452 if (is_ab9540(ab8500) || is_ab8505(ab8500)) 1453 ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs, 1454 ARRAY_SIZE(ab9540_ab8505_devs), NULL, 1455 ab8500->irq_base, ab8500->domain); 1456 if (ret) 1457 goto out_freeirq; 1458 1459 if (!no_bm) { 1460 /* Add battery management devices */ 1461 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs, 1462 ARRAY_SIZE(ab8500_bm_devs), NULL, 1463 ab8500->irq_base, ab8500->domain); 1464 if (ret) 1465 dev_err(ab8500->dev, "error adding bm devices\n"); 1466 } 1467 1468 if (is_ab9540(ab8500)) 1469 ret = sysfs_create_group(&ab8500->dev->kobj, 1470 &ab9540_attr_group); 1471 else 1472 ret = sysfs_create_group(&ab8500->dev->kobj, 1473 &ab8500_attr_group); 1474 if (ret) 1475 dev_err(ab8500->dev, "error creating sysfs entries\n"); 1476 1477 return ret; 1478 1479out_freeirq: 1480 free_irq(ab8500->irq, ab8500); 1481out_freeoldmask: 1482 kfree(ab8500->oldmask); 1483out_freemask: 1484 kfree(ab8500->mask); 1485out_free_ab8500: 1486 kfree(ab8500); 1487 1488 return ret; 1489} 1490 1491static int __devexit ab8500_remove(struct platform_device *pdev) 1492{ 1493 struct ab8500 *ab8500 = platform_get_drvdata(pdev); 1494 1495 if (is_ab9540(ab8500)) 1496 sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group); 1497 else 1498 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group); 1499 1500 mfd_remove_devices(ab8500->dev); 1501 free_irq(ab8500->irq, ab8500); 1502 1503 kfree(ab8500->oldmask); 1504 kfree(ab8500->mask); 1505 kfree(ab8500); 1506 1507 return 0; 1508} 1509 1510static const struct platform_device_id ab8500_id[] = { 1511 { "ab8500-core", AB8500_VERSION_AB8500 }, 1512 { "ab8505-i2c", AB8500_VERSION_AB8505 }, 1513 { "ab9540-i2c", AB8500_VERSION_AB9540 }, 1514 { "ab8540-i2c", AB8500_VERSION_AB8540 }, 1515 { } 1516}; 1517 1518static struct platform_driver ab8500_core_driver = { 1519 .driver = { 1520 .name = "ab8500-core", 1521 .owner = THIS_MODULE, 1522 }, 1523 .probe = ab8500_probe, 1524 .remove = __devexit_p(ab8500_remove), 1525 .id_table = ab8500_id, 1526}; 1527 1528static int __init ab8500_core_init(void) 1529{ 1530 return platform_driver_register(&ab8500_core_driver); 1531} 1532 1533static void __exit ab8500_core_exit(void) 1534{ 1535 platform_driver_unregister(&ab8500_core_driver); 1536} 1537core_initcall(ab8500_core_init); 1538module_exit(ab8500_core_exit); 1539 1540MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent"); 1541MODULE_DESCRIPTION("AB8500 MFD core"); 1542MODULE_LICENSE("GPL v2"); 1543