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/delay.h> 15 #include <linux/interrupt.h> 16 #include <linux/module.h> 17 #include <linux/platform_device.h> 18 #include <linux/mfd/core.h> 19 #include <linux/mfd/abx500.h> 20 #include <linux/mfd/ab8500.h> 21 #include <linux/regulator/ab8500.h> 22 23 /* 24 * Interrupt register offsets 25 * Bank : 0x0E 26 */ 27 #define AB8500_IT_SOURCE1_REG 0x00 28 #define AB8500_IT_SOURCE2_REG 0x01 29 #define AB8500_IT_SOURCE3_REG 0x02 30 #define AB8500_IT_SOURCE4_REG 0x03 31 #define AB8500_IT_SOURCE5_REG 0x04 32 #define AB8500_IT_SOURCE6_REG 0x05 33 #define AB8500_IT_SOURCE7_REG 0x06 34 #define AB8500_IT_SOURCE8_REG 0x07 35 #define AB8500_IT_SOURCE19_REG 0x12 36 #define AB8500_IT_SOURCE20_REG 0x13 37 #define AB8500_IT_SOURCE21_REG 0x14 38 #define AB8500_IT_SOURCE22_REG 0x15 39 #define AB8500_IT_SOURCE23_REG 0x16 40 #define AB8500_IT_SOURCE24_REG 0x17 41 42 /* 43 * latch registers 44 */ 45 #define AB8500_IT_LATCH1_REG 0x20 46 #define AB8500_IT_LATCH2_REG 0x21 47 #define AB8500_IT_LATCH3_REG 0x22 48 #define AB8500_IT_LATCH4_REG 0x23 49 #define AB8500_IT_LATCH5_REG 0x24 50 #define AB8500_IT_LATCH6_REG 0x25 51 #define AB8500_IT_LATCH7_REG 0x26 52 #define AB8500_IT_LATCH8_REG 0x27 53 #define AB8500_IT_LATCH9_REG 0x28 54 #define AB8500_IT_LATCH10_REG 0x29 55 #define AB8500_IT_LATCH12_REG 0x2B 56 #define AB8500_IT_LATCH19_REG 0x32 57 #define AB8500_IT_LATCH20_REG 0x33 58 #define AB8500_IT_LATCH21_REG 0x34 59 #define AB8500_IT_LATCH22_REG 0x35 60 #define AB8500_IT_LATCH23_REG 0x36 61 #define AB8500_IT_LATCH24_REG 0x37 62 63 /* 64 * mask registers 65 */ 66 67 #define AB8500_IT_MASK1_REG 0x40 68 #define AB8500_IT_MASK2_REG 0x41 69 #define AB8500_IT_MASK3_REG 0x42 70 #define AB8500_IT_MASK4_REG 0x43 71 #define AB8500_IT_MASK5_REG 0x44 72 #define AB8500_IT_MASK6_REG 0x45 73 #define AB8500_IT_MASK7_REG 0x46 74 #define AB8500_IT_MASK8_REG 0x47 75 #define AB8500_IT_MASK9_REG 0x48 76 #define AB8500_IT_MASK10_REG 0x49 77 #define AB8500_IT_MASK11_REG 0x4A 78 #define AB8500_IT_MASK12_REG 0x4B 79 #define AB8500_IT_MASK13_REG 0x4C 80 #define AB8500_IT_MASK14_REG 0x4D 81 #define AB8500_IT_MASK15_REG 0x4E 82 #define AB8500_IT_MASK16_REG 0x4F 83 #define AB8500_IT_MASK17_REG 0x50 84 #define AB8500_IT_MASK18_REG 0x51 85 #define AB8500_IT_MASK19_REG 0x52 86 #define AB8500_IT_MASK20_REG 0x53 87 #define AB8500_IT_MASK21_REG 0x54 88 #define AB8500_IT_MASK22_REG 0x55 89 #define AB8500_IT_MASK23_REG 0x56 90 #define AB8500_IT_MASK24_REG 0x57 91 92 #define AB8500_REV_REG 0x80 93 #define AB8500_SWITCH_OFF_STATUS 0x00 94 95 /* 96 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt 97 * numbers are indexed into this array with (num / 8). 98 * 99 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at 100 * offset 0. 101 */ 102 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = { 103 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 104 }; 105 106 static int ab8500_get_chip_id(struct device *dev) 107 { 108 struct ab8500 *ab8500; 109 110 if (!dev) 111 return -EINVAL; 112 ab8500 = dev_get_drvdata(dev->parent); 113 return ab8500 ? (int)ab8500->chip_id : -EINVAL; 114 } 115 116 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank, 117 u8 reg, u8 data) 118 { 119 int ret; 120 /* 121 * Put the u8 bank and u8 register together into a an u16. 122 * The bank on higher 8 bits and register in lower 8 bits. 123 * */ 124 u16 addr = ((u16)bank) << 8 | reg; 125 126 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data); 127 128 ret = mutex_lock_interruptible(&ab8500->lock); 129 if (ret) 130 return ret; 131 132 ret = ab8500->write(ab8500, addr, data); 133 if (ret < 0) 134 dev_err(ab8500->dev, "failed to write reg %#x: %d\n", 135 addr, ret); 136 mutex_unlock(&ab8500->lock); 137 138 return ret; 139 } 140 141 static int ab8500_set_register(struct device *dev, u8 bank, 142 u8 reg, u8 value) 143 { 144 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); 145 146 return set_register_interruptible(ab8500, bank, reg, value); 147 } 148 149 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank, 150 u8 reg, u8 *value) 151 { 152 int ret; 153 /* put the u8 bank and u8 reg together into a an u16. 154 * bank on higher 8 bits and reg in lower */ 155 u16 addr = ((u16)bank) << 8 | reg; 156 157 ret = mutex_lock_interruptible(&ab8500->lock); 158 if (ret) 159 return ret; 160 161 ret = ab8500->read(ab8500, addr); 162 if (ret < 0) 163 dev_err(ab8500->dev, "failed to read reg %#x: %d\n", 164 addr, ret); 165 else 166 *value = ret; 167 168 mutex_unlock(&ab8500->lock); 169 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret); 170 171 return ret; 172 } 173 174 static int ab8500_get_register(struct device *dev, u8 bank, 175 u8 reg, u8 *value) 176 { 177 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); 178 179 return get_register_interruptible(ab8500, bank, reg, value); 180 } 181 182 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank, 183 u8 reg, u8 bitmask, u8 bitvalues) 184 { 185 int ret; 186 u8 data; 187 /* put the u8 bank and u8 reg together into a an u16. 188 * bank on higher 8 bits and reg in lower */ 189 u16 addr = ((u16)bank) << 8 | reg; 190 191 ret = mutex_lock_interruptible(&ab8500->lock); 192 if (ret) 193 return ret; 194 195 ret = ab8500->read(ab8500, addr); 196 if (ret < 0) { 197 dev_err(ab8500->dev, "failed to read reg %#x: %d\n", 198 addr, ret); 199 goto out; 200 } 201 202 data = (u8)ret; 203 data = (~bitmask & data) | (bitmask & bitvalues); 204 205 ret = ab8500->write(ab8500, addr, data); 206 if (ret < 0) 207 dev_err(ab8500->dev, "failed to write reg %#x: %d\n", 208 addr, ret); 209 210 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, data); 211 out: 212 mutex_unlock(&ab8500->lock); 213 return ret; 214 } 215 216 static int ab8500_mask_and_set_register(struct device *dev, 217 u8 bank, u8 reg, u8 bitmask, u8 bitvalues) 218 { 219 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); 220 221 return mask_and_set_register_interruptible(ab8500, bank, reg, 222 bitmask, bitvalues); 223 224 } 225 226 static struct abx500_ops ab8500_ops = { 227 .get_chip_id = ab8500_get_chip_id, 228 .get_register = ab8500_get_register, 229 .set_register = ab8500_set_register, 230 .get_register_page = NULL, 231 .set_register_page = NULL, 232 .mask_and_set_register = ab8500_mask_and_set_register, 233 .event_registers_startup_state_get = NULL, 234 .startup_irq_enabled = NULL, 235 }; 236 237 static void ab8500_irq_lock(struct irq_data *data) 238 { 239 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 240 241 mutex_lock(&ab8500->irq_lock); 242 } 243 244 static void ab8500_irq_sync_unlock(struct irq_data *data) 245 { 246 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 247 int i; 248 249 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) { 250 u8 old = ab8500->oldmask[i]; 251 u8 new = ab8500->mask[i]; 252 int reg; 253 254 if (new == old) 255 continue; 256 257 /* Interrupt register 12 doesn't exist prior to version 2.0 */ 258 if (ab8500_irq_regoffset[i] == 11 && 259 ab8500->chip_id < AB8500_CUT2P0) 260 continue; 261 262 ab8500->oldmask[i] = new; 263 264 reg = AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i]; 265 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new); 266 } 267 268 mutex_unlock(&ab8500->irq_lock); 269 } 270 271 static void ab8500_irq_mask(struct irq_data *data) 272 { 273 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 274 int offset = data->irq - ab8500->irq_base; 275 int index = offset / 8; 276 int mask = 1 << (offset % 8); 277 278 ab8500->mask[index] |= mask; 279 } 280 281 static void ab8500_irq_unmask(struct irq_data *data) 282 { 283 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); 284 int offset = data->irq - ab8500->irq_base; 285 int index = offset / 8; 286 int mask = 1 << (offset % 8); 287 288 ab8500->mask[index] &= ~mask; 289 } 290 291 static struct irq_chip ab8500_irq_chip = { 292 .name = "ab8500", 293 .irq_bus_lock = ab8500_irq_lock, 294 .irq_bus_sync_unlock = ab8500_irq_sync_unlock, 295 .irq_mask = ab8500_irq_mask, 296 .irq_unmask = ab8500_irq_unmask, 297 }; 298 299 static irqreturn_t ab8500_irq(int irq, void *dev) 300 { 301 struct ab8500 *ab8500 = dev; 302 int i; 303 304 dev_vdbg(ab8500->dev, "interrupt\n"); 305 306 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) { 307 int regoffset = ab8500_irq_regoffset[i]; 308 int status; 309 u8 value; 310 311 /* Interrupt register 12 doesn't exist prior to version 2.0 */ 312 if (regoffset == 11 && ab8500->chip_id < AB8500_CUT2P0) 313 continue; 314 315 status = get_register_interruptible(ab8500, AB8500_INTERRUPT, 316 AB8500_IT_LATCH1_REG + regoffset, &value); 317 if (status < 0 || value == 0) 318 continue; 319 320 do { 321 int bit = __ffs(value); 322 int line = i * 8 + bit; 323 324 handle_nested_irq(ab8500->irq_base + line); 325 value &= ~(1 << bit); 326 } while (value); 327 } 328 329 return IRQ_HANDLED; 330 } 331 332 static int ab8500_irq_init(struct ab8500 *ab8500) 333 { 334 int base = ab8500->irq_base; 335 int irq; 336 337 for (irq = base; irq < base + AB8500_NR_IRQS; irq++) { 338 irq_set_chip_data(irq, ab8500); 339 irq_set_chip_and_handler(irq, &ab8500_irq_chip, 340 handle_simple_irq); 341 irq_set_nested_thread(irq, 1); 342 #ifdef CONFIG_ARM 343 set_irq_flags(irq, IRQF_VALID); 344 #else 345 irq_set_noprobe(irq); 346 #endif 347 } 348 349 return 0; 350 } 351 352 static void ab8500_irq_remove(struct ab8500 *ab8500) 353 { 354 int base = ab8500->irq_base; 355 int irq; 356 357 for (irq = base; irq < base + AB8500_NR_IRQS; irq++) { 358 #ifdef CONFIG_ARM 359 set_irq_flags(irq, 0); 360 #endif 361 irq_set_chip_and_handler(irq, NULL, NULL); 362 irq_set_chip_data(irq, NULL); 363 } 364 } 365 366 static struct resource __devinitdata ab8500_gpio_resources[] = { 367 { 368 .name = "GPIO_INT6", 369 .start = AB8500_INT_GPIO6R, 370 .end = AB8500_INT_GPIO41F, 371 .flags = IORESOURCE_IRQ, 372 } 373 }; 374 375 static struct resource __devinitdata ab8500_gpadc_resources[] = { 376 { 377 .name = "HW_CONV_END", 378 .start = AB8500_INT_GP_HW_ADC_CONV_END, 379 .end = AB8500_INT_GP_HW_ADC_CONV_END, 380 .flags = IORESOURCE_IRQ, 381 }, 382 { 383 .name = "SW_CONV_END", 384 .start = AB8500_INT_GP_SW_ADC_CONV_END, 385 .end = AB8500_INT_GP_SW_ADC_CONV_END, 386 .flags = IORESOURCE_IRQ, 387 }, 388 }; 389 390 static struct resource __devinitdata ab8500_rtc_resources[] = { 391 { 392 .name = "60S", 393 .start = AB8500_INT_RTC_60S, 394 .end = AB8500_INT_RTC_60S, 395 .flags = IORESOURCE_IRQ, 396 }, 397 { 398 .name = "ALARM", 399 .start = AB8500_INT_RTC_ALARM, 400 .end = AB8500_INT_RTC_ALARM, 401 .flags = IORESOURCE_IRQ, 402 }, 403 }; 404 405 static struct resource __devinitdata ab8500_poweronkey_db_resources[] = { 406 { 407 .name = "ONKEY_DBF", 408 .start = AB8500_INT_PON_KEY1DB_F, 409 .end = AB8500_INT_PON_KEY1DB_F, 410 .flags = IORESOURCE_IRQ, 411 }, 412 { 413 .name = "ONKEY_DBR", 414 .start = AB8500_INT_PON_KEY1DB_R, 415 .end = AB8500_INT_PON_KEY1DB_R, 416 .flags = IORESOURCE_IRQ, 417 }, 418 }; 419 420 static struct resource __devinitdata ab8500_av_acc_detect_resources[] = { 421 { 422 .name = "ACC_DETECT_1DB_F", 423 .start = AB8500_INT_ACC_DETECT_1DB_F, 424 .end = AB8500_INT_ACC_DETECT_1DB_F, 425 .flags = IORESOURCE_IRQ, 426 }, 427 { 428 .name = "ACC_DETECT_1DB_R", 429 .start = AB8500_INT_ACC_DETECT_1DB_R, 430 .end = AB8500_INT_ACC_DETECT_1DB_R, 431 .flags = IORESOURCE_IRQ, 432 }, 433 { 434 .name = "ACC_DETECT_21DB_F", 435 .start = AB8500_INT_ACC_DETECT_21DB_F, 436 .end = AB8500_INT_ACC_DETECT_21DB_F, 437 .flags = IORESOURCE_IRQ, 438 }, 439 { 440 .name = "ACC_DETECT_21DB_R", 441 .start = AB8500_INT_ACC_DETECT_21DB_R, 442 .end = AB8500_INT_ACC_DETECT_21DB_R, 443 .flags = IORESOURCE_IRQ, 444 }, 445 { 446 .name = "ACC_DETECT_22DB_F", 447 .start = AB8500_INT_ACC_DETECT_22DB_F, 448 .end = AB8500_INT_ACC_DETECT_22DB_F, 449 .flags = IORESOURCE_IRQ, 450 }, 451 { 452 .name = "ACC_DETECT_22DB_R", 453 .start = AB8500_INT_ACC_DETECT_22DB_R, 454 .end = AB8500_INT_ACC_DETECT_22DB_R, 455 .flags = IORESOURCE_IRQ, 456 }, 457 }; 458 459 static struct resource __devinitdata ab8500_charger_resources[] = { 460 { 461 .name = "MAIN_CH_UNPLUG_DET", 462 .start = AB8500_INT_MAIN_CH_UNPLUG_DET, 463 .end = AB8500_INT_MAIN_CH_UNPLUG_DET, 464 .flags = IORESOURCE_IRQ, 465 }, 466 { 467 .name = "MAIN_CHARGE_PLUG_DET", 468 .start = AB8500_INT_MAIN_CH_PLUG_DET, 469 .end = AB8500_INT_MAIN_CH_PLUG_DET, 470 .flags = IORESOURCE_IRQ, 471 }, 472 { 473 .name = "VBUS_DET_R", 474 .start = AB8500_INT_VBUS_DET_R, 475 .end = AB8500_INT_VBUS_DET_R, 476 .flags = IORESOURCE_IRQ, 477 }, 478 { 479 .name = "VBUS_DET_F", 480 .start = AB8500_INT_VBUS_DET_F, 481 .end = AB8500_INT_VBUS_DET_F, 482 .flags = IORESOURCE_IRQ, 483 }, 484 { 485 .name = "USB_LINK_STATUS", 486 .start = AB8500_INT_USB_LINK_STATUS, 487 .end = AB8500_INT_USB_LINK_STATUS, 488 .flags = IORESOURCE_IRQ, 489 }, 490 { 491 .name = "USB_CHARGE_DET_DONE", 492 .start = AB8500_INT_USB_CHG_DET_DONE, 493 .end = AB8500_INT_USB_CHG_DET_DONE, 494 .flags = IORESOURCE_IRQ, 495 }, 496 { 497 .name = "VBUS_OVV", 498 .start = AB8500_INT_VBUS_OVV, 499 .end = AB8500_INT_VBUS_OVV, 500 .flags = IORESOURCE_IRQ, 501 }, 502 { 503 .name = "USB_CH_TH_PROT_R", 504 .start = AB8500_INT_USB_CH_TH_PROT_R, 505 .end = AB8500_INT_USB_CH_TH_PROT_R, 506 .flags = IORESOURCE_IRQ, 507 }, 508 { 509 .name = "USB_CH_TH_PROT_F", 510 .start = AB8500_INT_USB_CH_TH_PROT_F, 511 .end = AB8500_INT_USB_CH_TH_PROT_F, 512 .flags = IORESOURCE_IRQ, 513 }, 514 { 515 .name = "MAIN_EXT_CH_NOT_OK", 516 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK, 517 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK, 518 .flags = IORESOURCE_IRQ, 519 }, 520 { 521 .name = "MAIN_CH_TH_PROT_R", 522 .start = AB8500_INT_MAIN_CH_TH_PROT_R, 523 .end = AB8500_INT_MAIN_CH_TH_PROT_R, 524 .flags = IORESOURCE_IRQ, 525 }, 526 { 527 .name = "MAIN_CH_TH_PROT_F", 528 .start = AB8500_INT_MAIN_CH_TH_PROT_F, 529 .end = AB8500_INT_MAIN_CH_TH_PROT_F, 530 .flags = IORESOURCE_IRQ, 531 }, 532 { 533 .name = "USB_CHARGER_NOT_OKR", 534 .start = AB8500_INT_USB_CHARGER_NOT_OK, 535 .end = AB8500_INT_USB_CHARGER_NOT_OK, 536 .flags = IORESOURCE_IRQ, 537 }, 538 { 539 .name = "USB_CHARGER_NOT_OKF", 540 .start = AB8500_INT_USB_CHARGER_NOT_OKF, 541 .end = AB8500_INT_USB_CHARGER_NOT_OKF, 542 .flags = IORESOURCE_IRQ, 543 }, 544 { 545 .name = "CH_WD_EXP", 546 .start = AB8500_INT_CH_WD_EXP, 547 .end = AB8500_INT_CH_WD_EXP, 548 .flags = IORESOURCE_IRQ, 549 }, 550 }; 551 552 static struct resource __devinitdata ab8500_btemp_resources[] = { 553 { 554 .name = "BAT_CTRL_INDB", 555 .start = AB8500_INT_BAT_CTRL_INDB, 556 .end = AB8500_INT_BAT_CTRL_INDB, 557 .flags = IORESOURCE_IRQ, 558 }, 559 { 560 .name = "BTEMP_LOW", 561 .start = AB8500_INT_BTEMP_LOW, 562 .end = AB8500_INT_BTEMP_LOW, 563 .flags = IORESOURCE_IRQ, 564 }, 565 { 566 .name = "BTEMP_HIGH", 567 .start = AB8500_INT_BTEMP_HIGH, 568 .end = AB8500_INT_BTEMP_HIGH, 569 .flags = IORESOURCE_IRQ, 570 }, 571 { 572 .name = "BTEMP_LOW_MEDIUM", 573 .start = AB8500_INT_BTEMP_LOW_MEDIUM, 574 .end = AB8500_INT_BTEMP_LOW_MEDIUM, 575 .flags = IORESOURCE_IRQ, 576 }, 577 { 578 .name = "BTEMP_MEDIUM_HIGH", 579 .start = AB8500_INT_BTEMP_MEDIUM_HIGH, 580 .end = AB8500_INT_BTEMP_MEDIUM_HIGH, 581 .flags = IORESOURCE_IRQ, 582 }, 583 }; 584 585 static struct resource __devinitdata ab8500_fg_resources[] = { 586 { 587 .name = "NCONV_ACCU", 588 .start = AB8500_INT_CCN_CONV_ACC, 589 .end = AB8500_INT_CCN_CONV_ACC, 590 .flags = IORESOURCE_IRQ, 591 }, 592 { 593 .name = "BATT_OVV", 594 .start = AB8500_INT_BATT_OVV, 595 .end = AB8500_INT_BATT_OVV, 596 .flags = IORESOURCE_IRQ, 597 }, 598 { 599 .name = "LOW_BAT_F", 600 .start = AB8500_INT_LOW_BAT_F, 601 .end = AB8500_INT_LOW_BAT_F, 602 .flags = IORESOURCE_IRQ, 603 }, 604 { 605 .name = "LOW_BAT_R", 606 .start = AB8500_INT_LOW_BAT_R, 607 .end = AB8500_INT_LOW_BAT_R, 608 .flags = IORESOURCE_IRQ, 609 }, 610 { 611 .name = "CC_INT_CALIB", 612 .start = AB8500_INT_CC_INT_CALIB, 613 .end = AB8500_INT_CC_INT_CALIB, 614 .flags = IORESOURCE_IRQ, 615 }, 616 }; 617 618 static struct resource __devinitdata ab8500_chargalg_resources[] = {}; 619 620 static struct resource __devinitdata ab8500_debug_resources[] = { 621 { 622 .name = "IRQ_FIRST", 623 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK, 624 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK, 625 .flags = IORESOURCE_IRQ, 626 }, 627 { 628 .name = "IRQ_LAST", 629 .start = AB8500_INT_USB_CHARGER_NOT_OKF, 630 .end = AB8500_INT_USB_CHARGER_NOT_OKF, 631 .flags = IORESOURCE_IRQ, 632 }, 633 }; 634 635 static struct resource __devinitdata ab8500_usb_resources[] = { 636 { 637 .name = "ID_WAKEUP_R", 638 .start = AB8500_INT_ID_WAKEUP_R, 639 .end = AB8500_INT_ID_WAKEUP_R, 640 .flags = IORESOURCE_IRQ, 641 }, 642 { 643 .name = "ID_WAKEUP_F", 644 .start = AB8500_INT_ID_WAKEUP_F, 645 .end = AB8500_INT_ID_WAKEUP_F, 646 .flags = IORESOURCE_IRQ, 647 }, 648 { 649 .name = "VBUS_DET_F", 650 .start = AB8500_INT_VBUS_DET_F, 651 .end = AB8500_INT_VBUS_DET_F, 652 .flags = IORESOURCE_IRQ, 653 }, 654 { 655 .name = "VBUS_DET_R", 656 .start = AB8500_INT_VBUS_DET_R, 657 .end = AB8500_INT_VBUS_DET_R, 658 .flags = IORESOURCE_IRQ, 659 }, 660 { 661 .name = "USB_LINK_STATUS", 662 .start = AB8500_INT_USB_LINK_STATUS, 663 .end = AB8500_INT_USB_LINK_STATUS, 664 .flags = IORESOURCE_IRQ, 665 }, 666 { 667 .name = "USB_ADP_PROBE_PLUG", 668 .start = AB8500_INT_ADP_PROBE_PLUG, 669 .end = AB8500_INT_ADP_PROBE_PLUG, 670 .flags = IORESOURCE_IRQ, 671 }, 672 { 673 .name = "USB_ADP_PROBE_UNPLUG", 674 .start = AB8500_INT_ADP_PROBE_UNPLUG, 675 .end = AB8500_INT_ADP_PROBE_UNPLUG, 676 .flags = IORESOURCE_IRQ, 677 }, 678 }; 679 680 static struct resource __devinitdata ab8500_temp_resources[] = { 681 { 682 .name = "AB8500_TEMP_WARM", 683 .start = AB8500_INT_TEMP_WARM, 684 .end = AB8500_INT_TEMP_WARM, 685 .flags = IORESOURCE_IRQ, 686 }, 687 }; 688 689 static struct mfd_cell __devinitdata ab8500_devs[] = { 690 #ifdef CONFIG_DEBUG_FS 691 { 692 .name = "ab8500-debug", 693 .num_resources = ARRAY_SIZE(ab8500_debug_resources), 694 .resources = ab8500_debug_resources, 695 }, 696 #endif 697 { 698 .name = "ab8500-sysctrl", 699 }, 700 { 701 .name = "ab8500-regulator", 702 }, 703 { 704 .name = "ab8500-gpio", 705 .num_resources = ARRAY_SIZE(ab8500_gpio_resources), 706 .resources = ab8500_gpio_resources, 707 }, 708 { 709 .name = "ab8500-gpadc", 710 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources), 711 .resources = ab8500_gpadc_resources, 712 }, 713 { 714 .name = "ab8500-rtc", 715 .num_resources = ARRAY_SIZE(ab8500_rtc_resources), 716 .resources = ab8500_rtc_resources, 717 }, 718 { 719 .name = "ab8500-charger", 720 .num_resources = ARRAY_SIZE(ab8500_charger_resources), 721 .resources = ab8500_charger_resources, 722 }, 723 { 724 .name = "ab8500-btemp", 725 .num_resources = ARRAY_SIZE(ab8500_btemp_resources), 726 .resources = ab8500_btemp_resources, 727 }, 728 { 729 .name = "ab8500-fg", 730 .num_resources = ARRAY_SIZE(ab8500_fg_resources), 731 .resources = ab8500_fg_resources, 732 }, 733 { 734 .name = "ab8500-chargalg", 735 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources), 736 .resources = ab8500_chargalg_resources, 737 }, 738 { 739 .name = "ab8500-acc-det", 740 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources), 741 .resources = ab8500_av_acc_detect_resources, 742 }, 743 { 744 .name = "ab8500-codec", 745 }, 746 { 747 .name = "ab8500-usb", 748 .num_resources = ARRAY_SIZE(ab8500_usb_resources), 749 .resources = ab8500_usb_resources, 750 }, 751 { 752 .name = "ab8500-poweron-key", 753 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources), 754 .resources = ab8500_poweronkey_db_resources, 755 }, 756 { 757 .name = "ab8500-pwm", 758 .id = 1, 759 }, 760 { 761 .name = "ab8500-pwm", 762 .id = 2, 763 }, 764 { 765 .name = "ab8500-pwm", 766 .id = 3, 767 }, 768 { .name = "ab8500-leds", }, 769 { 770 .name = "ab8500-denc", 771 }, 772 { 773 .name = "ab8500-temp", 774 .num_resources = ARRAY_SIZE(ab8500_temp_resources), 775 .resources = ab8500_temp_resources, 776 }, 777 }; 778 779 static ssize_t show_chip_id(struct device *dev, 780 struct device_attribute *attr, char *buf) 781 { 782 struct ab8500 *ab8500; 783 784 ab8500 = dev_get_drvdata(dev); 785 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL); 786 } 787 788 /* 789 * ab8500 has switched off due to (SWITCH_OFF_STATUS): 790 * 0x01 Swoff bit programming 791 * 0x02 Thermal protection activation 792 * 0x04 Vbat lower then BattOk falling threshold 793 * 0x08 Watchdog expired 794 * 0x10 Non presence of 32kHz clock 795 * 0x20 Battery level lower than power on reset threshold 796 * 0x40 Power on key 1 pressed longer than 10 seconds 797 * 0x80 DB8500 thermal shutdown 798 */ 799 static ssize_t show_switch_off_status(struct device *dev, 800 struct device_attribute *attr, char *buf) 801 { 802 int ret; 803 u8 value; 804 struct ab8500 *ab8500; 805 806 ab8500 = dev_get_drvdata(dev); 807 ret = get_register_interruptible(ab8500, AB8500_RTC, 808 AB8500_SWITCH_OFF_STATUS, &value); 809 if (ret < 0) 810 return ret; 811 return sprintf(buf, "%#x\n", value); 812 } 813 814 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL); 815 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL); 816 817 static struct attribute *ab8500_sysfs_entries[] = { 818 &dev_attr_chip_id.attr, 819 &dev_attr_switch_off_status.attr, 820 NULL, 821 }; 822 823 static struct attribute_group ab8500_attr_group = { 824 .attrs = ab8500_sysfs_entries, 825 }; 826 827 int __devinit ab8500_init(struct ab8500 *ab8500) 828 { 829 struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev); 830 int ret; 831 int i; 832 u8 value; 833 834 if (plat) 835 ab8500->irq_base = plat->irq_base; 836 837 mutex_init(&ab8500->lock); 838 mutex_init(&ab8500->irq_lock); 839 840 ret = get_register_interruptible(ab8500, AB8500_MISC, 841 AB8500_REV_REG, &value); 842 if (ret < 0) 843 return ret; 844 845 switch (value) { 846 case AB8500_CUTEARLY: 847 case AB8500_CUT1P0: 848 case AB8500_CUT1P1: 849 case AB8500_CUT2P0: 850 case AB8500_CUT3P0: 851 dev_info(ab8500->dev, "detected chip, revision: %#x\n", value); 852 break; 853 default: 854 dev_err(ab8500->dev, "unknown chip, revision: %#x\n", value); 855 return -EINVAL; 856 } 857 ab8500->chip_id = value; 858 859 /* 860 * ab8500 has switched off due to (SWITCH_OFF_STATUS): 861 * 0x01 Swoff bit programming 862 * 0x02 Thermal protection activation 863 * 0x04 Vbat lower then BattOk falling threshold 864 * 0x08 Watchdog expired 865 * 0x10 Non presence of 32kHz clock 866 * 0x20 Battery level lower than power on reset threshold 867 * 0x40 Power on key 1 pressed longer than 10 seconds 868 * 0x80 DB8500 thermal shutdown 869 */ 870 871 ret = get_register_interruptible(ab8500, AB8500_RTC, 872 AB8500_SWITCH_OFF_STATUS, &value); 873 if (ret < 0) 874 return ret; 875 dev_info(ab8500->dev, "switch off status: %#x", value); 876 877 if (plat && plat->init) 878 plat->init(ab8500); 879 880 /* Clear and mask all interrupts */ 881 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) { 882 /* Interrupt register 12 doesn't exist prior to version 2.0 */ 883 if (ab8500_irq_regoffset[i] == 11 && 884 ab8500->chip_id < AB8500_CUT2P0) 885 continue; 886 887 get_register_interruptible(ab8500, AB8500_INTERRUPT, 888 AB8500_IT_LATCH1_REG + ab8500_irq_regoffset[i], 889 &value); 890 set_register_interruptible(ab8500, AB8500_INTERRUPT, 891 AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i], 0xff); 892 } 893 894 ret = abx500_register_ops(ab8500->dev, &ab8500_ops); 895 if (ret) 896 return ret; 897 898 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) 899 ab8500->mask[i] = ab8500->oldmask[i] = 0xff; 900 901 if (ab8500->irq_base) { 902 ret = ab8500_irq_init(ab8500); 903 if (ret) 904 return ret; 905 906 ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq, 907 IRQF_ONESHOT | IRQF_NO_SUSPEND, 908 "ab8500", ab8500); 909 if (ret) 910 goto out_removeirq; 911 } 912 913 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs, 914 ARRAY_SIZE(ab8500_devs), NULL, 915 ab8500->irq_base); 916 if (ret) 917 goto out_freeirq; 918 919 ret = sysfs_create_group(&ab8500->dev->kobj, &ab8500_attr_group); 920 if (ret) 921 dev_err(ab8500->dev, "error creating sysfs entries\n"); 922 923 return ret; 924 925 out_freeirq: 926 if (ab8500->irq_base) { 927 free_irq(ab8500->irq, ab8500); 928 out_removeirq: 929 ab8500_irq_remove(ab8500); 930 } 931 return ret; 932 } 933 934 int __devexit ab8500_exit(struct ab8500 *ab8500) 935 { 936 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group); 937 mfd_remove_devices(ab8500->dev); 938 if (ab8500->irq_base) { 939 free_irq(ab8500->irq, ab8500); 940 ab8500_irq_remove(ab8500); 941 } 942 943 return 0; 944 } 945 946 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent"); 947 MODULE_DESCRIPTION("AB8500 MFD core"); 948 MODULE_LICENSE("GPL v2"); 949