1 /* 2 * lpc_ich.c - LPC interface for Intel ICH 3 * 4 * LPC bridge function of the Intel ICH contains many other 5 * functional units, such as Interrupt controllers, Timers, 6 * Power Management, System Management, GPIO, RTC, and LPC 7 * Configuration Registers. 8 * 9 * This driver is derived from lpc_sch. 10 11 * Copyright (c) 2011 Extreme Engineering Solution, Inc. 12 * Author: Aaron Sierra <asierra@xes-inc.com> 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License 2 as published 16 * by the Free Software Foundation. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * This driver supports the following I/O Controller hubs: 24 * (See the intel documentation on http://developer.intel.com.) 25 * document number 290655-003, 290677-014: 82801AA (ICH), 82801AB (ICHO) 26 * document number 290687-002, 298242-027: 82801BA (ICH2) 27 * document number 290733-003, 290739-013: 82801CA (ICH3-S) 28 * document number 290716-001, 290718-007: 82801CAM (ICH3-M) 29 * document number 290744-001, 290745-025: 82801DB (ICH4) 30 * document number 252337-001, 252663-008: 82801DBM (ICH4-M) 31 * document number 273599-001, 273645-002: 82801E (C-ICH) 32 * document number 252516-001, 252517-028: 82801EB (ICH5), 82801ER (ICH5R) 33 * document number 300641-004, 300884-013: 6300ESB 34 * document number 301473-002, 301474-026: 82801F (ICH6) 35 * document number 313082-001, 313075-006: 631xESB, 632xESB 36 * document number 307013-003, 307014-024: 82801G (ICH7) 37 * document number 322896-001, 322897-001: NM10 38 * document number 313056-003, 313057-017: 82801H (ICH8) 39 * document number 316972-004, 316973-012: 82801I (ICH9) 40 * document number 319973-002, 319974-002: 82801J (ICH10) 41 * document number 322169-001, 322170-003: 5 Series, 3400 Series (PCH) 42 * document number 320066-003, 320257-008: EP80597 (IICH) 43 * document number 324645-001, 324646-001: Cougar Point (CPT) 44 */ 45 46 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 47 48 #include <linux/kernel.h> 49 #include <linux/module.h> 50 #include <linux/errno.h> 51 #include <linux/acpi.h> 52 #include <linux/pci.h> 53 #include <linux/mfd/core.h> 54 #include <linux/mfd/lpc_ich.h> 55 #include <linux/platform_data/itco_wdt.h> 56 57 #define ACPIBASE 0x40 58 #define ACPIBASE_GPE_OFF 0x28 59 #define ACPIBASE_GPE_END 0x2f 60 #define ACPIBASE_SMI_OFF 0x30 61 #define ACPIBASE_SMI_END 0x33 62 #define ACPIBASE_PMC_OFF 0x08 63 #define ACPIBASE_PMC_END 0x0c 64 #define ACPIBASE_TCO_OFF 0x60 65 #define ACPIBASE_TCO_END 0x7f 66 #define ACPICTRL_PMCBASE 0x44 67 68 #define ACPIBASE_GCS_OFF 0x3410 69 #define ACPIBASE_GCS_END 0x3414 70 71 #define SPIBASE_BYT 0x54 72 #define SPIBASE_BYT_SZ 512 73 #define SPIBASE_BYT_EN BIT(1) 74 75 #define SPIBASE_LPT 0x3800 76 #define SPIBASE_LPT_SZ 512 77 #define BCR 0xdc 78 #define BCR_WPD BIT(0) 79 80 #define SPIBASE_APL_SZ 4096 81 82 #define GPIOBASE_ICH0 0x58 83 #define GPIOCTRL_ICH0 0x5C 84 #define GPIOBASE_ICH6 0x48 85 #define GPIOCTRL_ICH6 0x4C 86 87 #define RCBABASE 0xf0 88 89 #define wdt_io_res(i) wdt_res(0, i) 90 #define wdt_mem_res(i) wdt_res(ICH_RES_MEM_OFF, i) 91 #define wdt_res(b, i) (&wdt_ich_res[(b) + (i)]) 92 93 struct lpc_ich_priv { 94 int chipset; 95 96 int abase; /* ACPI base */ 97 int actrl_pbase; /* ACPI control or PMC base */ 98 int gbase; /* GPIO base */ 99 int gctrl; /* GPIO control */ 100 101 int abase_save; /* Cached ACPI base value */ 102 int actrl_pbase_save; /* Cached ACPI control or PMC base value */ 103 int gctrl_save; /* Cached GPIO control value */ 104 }; 105 106 static struct resource wdt_ich_res[] = { 107 /* ACPI - TCO */ 108 { 109 .flags = IORESOURCE_IO, 110 }, 111 /* ACPI - SMI */ 112 { 113 .flags = IORESOURCE_IO, 114 }, 115 /* GCS or PMC */ 116 { 117 .flags = IORESOURCE_MEM, 118 }, 119 }; 120 121 static struct resource gpio_ich_res[] = { 122 /* GPIO */ 123 { 124 .flags = IORESOURCE_IO, 125 }, 126 /* ACPI - GPE0 */ 127 { 128 .flags = IORESOURCE_IO, 129 }, 130 }; 131 132 static struct resource intel_spi_res[] = { 133 { 134 .flags = IORESOURCE_MEM, 135 } 136 }; 137 138 static struct mfd_cell lpc_ich_wdt_cell = { 139 .name = "iTCO_wdt", 140 .num_resources = ARRAY_SIZE(wdt_ich_res), 141 .resources = wdt_ich_res, 142 .ignore_resource_conflicts = true, 143 }; 144 145 static struct mfd_cell lpc_ich_gpio_cell = { 146 .name = "gpio_ich", 147 .num_resources = ARRAY_SIZE(gpio_ich_res), 148 .resources = gpio_ich_res, 149 .ignore_resource_conflicts = true, 150 }; 151 152 153 static struct mfd_cell lpc_ich_spi_cell = { 154 .name = "intel-spi", 155 .num_resources = ARRAY_SIZE(intel_spi_res), 156 .resources = intel_spi_res, 157 .ignore_resource_conflicts = true, 158 }; 159 160 /* chipset related info */ 161 enum lpc_chipsets { 162 LPC_ICH = 0, /* ICH */ 163 LPC_ICH0, /* ICH0 */ 164 LPC_ICH2, /* ICH2 */ 165 LPC_ICH2M, /* ICH2-M */ 166 LPC_ICH3, /* ICH3-S */ 167 LPC_ICH3M, /* ICH3-M */ 168 LPC_ICH4, /* ICH4 */ 169 LPC_ICH4M, /* ICH4-M */ 170 LPC_CICH, /* C-ICH */ 171 LPC_ICH5, /* ICH5 & ICH5R */ 172 LPC_6300ESB, /* 6300ESB */ 173 LPC_ICH6, /* ICH6 & ICH6R */ 174 LPC_ICH6M, /* ICH6-M */ 175 LPC_ICH6W, /* ICH6W & ICH6RW */ 176 LPC_631XESB, /* 631xESB/632xESB */ 177 LPC_ICH7, /* ICH7 & ICH7R */ 178 LPC_ICH7DH, /* ICH7DH */ 179 LPC_ICH7M, /* ICH7-M & ICH7-U */ 180 LPC_ICH7MDH, /* ICH7-M DH */ 181 LPC_NM10, /* NM10 */ 182 LPC_ICH8, /* ICH8 & ICH8R */ 183 LPC_ICH8DH, /* ICH8DH */ 184 LPC_ICH8DO, /* ICH8DO */ 185 LPC_ICH8M, /* ICH8M */ 186 LPC_ICH8ME, /* ICH8M-E */ 187 LPC_ICH9, /* ICH9 */ 188 LPC_ICH9R, /* ICH9R */ 189 LPC_ICH9DH, /* ICH9DH */ 190 LPC_ICH9DO, /* ICH9DO */ 191 LPC_ICH9M, /* ICH9M */ 192 LPC_ICH9ME, /* ICH9M-E */ 193 LPC_ICH10, /* ICH10 */ 194 LPC_ICH10R, /* ICH10R */ 195 LPC_ICH10D, /* ICH10D */ 196 LPC_ICH10DO, /* ICH10DO */ 197 LPC_PCH, /* PCH Desktop Full Featured */ 198 LPC_PCHM, /* PCH Mobile Full Featured */ 199 LPC_P55, /* P55 */ 200 LPC_PM55, /* PM55 */ 201 LPC_H55, /* H55 */ 202 LPC_QM57, /* QM57 */ 203 LPC_H57, /* H57 */ 204 LPC_HM55, /* HM55 */ 205 LPC_Q57, /* Q57 */ 206 LPC_HM57, /* HM57 */ 207 LPC_PCHMSFF, /* PCH Mobile SFF Full Featured */ 208 LPC_QS57, /* QS57 */ 209 LPC_3400, /* 3400 */ 210 LPC_3420, /* 3420 */ 211 LPC_3450, /* 3450 */ 212 LPC_EP80579, /* EP80579 */ 213 LPC_CPT, /* Cougar Point */ 214 LPC_CPTD, /* Cougar Point Desktop */ 215 LPC_CPTM, /* Cougar Point Mobile */ 216 LPC_PBG, /* Patsburg */ 217 LPC_DH89XXCC, /* DH89xxCC */ 218 LPC_PPT, /* Panther Point */ 219 LPC_LPT, /* Lynx Point */ 220 LPC_LPT_LP, /* Lynx Point-LP */ 221 LPC_WBG, /* Wellsburg */ 222 LPC_AVN, /* Avoton SoC */ 223 LPC_BAYTRAIL, /* Bay Trail SoC */ 224 LPC_COLETO, /* Coleto Creek */ 225 LPC_WPT_LP, /* Wildcat Point-LP */ 226 LPC_BRASWELL, /* Braswell SoC */ 227 LPC_LEWISBURG, /* Lewisburg */ 228 LPC_9S, /* 9 Series */ 229 LPC_APL, /* Apollo Lake SoC */ 230 LPC_GLK, /* Gemini Lake SoC */ 231 LPC_COUGARMOUNTAIN,/* Cougar Mountain SoC*/ 232 }; 233 234 static struct lpc_ich_info lpc_chipset_info[] = { 235 [LPC_ICH] = { 236 .name = "ICH", 237 .iTCO_version = 1, 238 }, 239 [LPC_ICH0] = { 240 .name = "ICH0", 241 .iTCO_version = 1, 242 }, 243 [LPC_ICH2] = { 244 .name = "ICH2", 245 .iTCO_version = 1, 246 }, 247 [LPC_ICH2M] = { 248 .name = "ICH2-M", 249 .iTCO_version = 1, 250 }, 251 [LPC_ICH3] = { 252 .name = "ICH3-S", 253 .iTCO_version = 1, 254 }, 255 [LPC_ICH3M] = { 256 .name = "ICH3-M", 257 .iTCO_version = 1, 258 }, 259 [LPC_ICH4] = { 260 .name = "ICH4", 261 .iTCO_version = 1, 262 }, 263 [LPC_ICH4M] = { 264 .name = "ICH4-M", 265 .iTCO_version = 1, 266 }, 267 [LPC_CICH] = { 268 .name = "C-ICH", 269 .iTCO_version = 1, 270 }, 271 [LPC_ICH5] = { 272 .name = "ICH5 or ICH5R", 273 .iTCO_version = 1, 274 }, 275 [LPC_6300ESB] = { 276 .name = "6300ESB", 277 .iTCO_version = 1, 278 }, 279 [LPC_ICH6] = { 280 .name = "ICH6 or ICH6R", 281 .iTCO_version = 2, 282 .gpio_version = ICH_V6_GPIO, 283 }, 284 [LPC_ICH6M] = { 285 .name = "ICH6-M", 286 .iTCO_version = 2, 287 .gpio_version = ICH_V6_GPIO, 288 }, 289 [LPC_ICH6W] = { 290 .name = "ICH6W or ICH6RW", 291 .iTCO_version = 2, 292 .gpio_version = ICH_V6_GPIO, 293 }, 294 [LPC_631XESB] = { 295 .name = "631xESB/632xESB", 296 .iTCO_version = 2, 297 .gpio_version = ICH_V6_GPIO, 298 }, 299 [LPC_ICH7] = { 300 .name = "ICH7 or ICH7R", 301 .iTCO_version = 2, 302 .gpio_version = ICH_V7_GPIO, 303 }, 304 [LPC_ICH7DH] = { 305 .name = "ICH7DH", 306 .iTCO_version = 2, 307 .gpio_version = ICH_V7_GPIO, 308 }, 309 [LPC_ICH7M] = { 310 .name = "ICH7-M or ICH7-U", 311 .iTCO_version = 2, 312 .gpio_version = ICH_V7_GPIO, 313 }, 314 [LPC_ICH7MDH] = { 315 .name = "ICH7-M DH", 316 .iTCO_version = 2, 317 .gpio_version = ICH_V7_GPIO, 318 }, 319 [LPC_NM10] = { 320 .name = "NM10", 321 .iTCO_version = 2, 322 .gpio_version = ICH_V7_GPIO, 323 }, 324 [LPC_ICH8] = { 325 .name = "ICH8 or ICH8R", 326 .iTCO_version = 2, 327 .gpio_version = ICH_V7_GPIO, 328 }, 329 [LPC_ICH8DH] = { 330 .name = "ICH8DH", 331 .iTCO_version = 2, 332 .gpio_version = ICH_V7_GPIO, 333 }, 334 [LPC_ICH8DO] = { 335 .name = "ICH8DO", 336 .iTCO_version = 2, 337 .gpio_version = ICH_V7_GPIO, 338 }, 339 [LPC_ICH8M] = { 340 .name = "ICH8M", 341 .iTCO_version = 2, 342 .gpio_version = ICH_V7_GPIO, 343 }, 344 [LPC_ICH8ME] = { 345 .name = "ICH8M-E", 346 .iTCO_version = 2, 347 .gpio_version = ICH_V7_GPIO, 348 }, 349 [LPC_ICH9] = { 350 .name = "ICH9", 351 .iTCO_version = 2, 352 .gpio_version = ICH_V9_GPIO, 353 }, 354 [LPC_ICH9R] = { 355 .name = "ICH9R", 356 .iTCO_version = 2, 357 .gpio_version = ICH_V9_GPIO, 358 }, 359 [LPC_ICH9DH] = { 360 .name = "ICH9DH", 361 .iTCO_version = 2, 362 .gpio_version = ICH_V9_GPIO, 363 }, 364 [LPC_ICH9DO] = { 365 .name = "ICH9DO", 366 .iTCO_version = 2, 367 .gpio_version = ICH_V9_GPIO, 368 }, 369 [LPC_ICH9M] = { 370 .name = "ICH9M", 371 .iTCO_version = 2, 372 .gpio_version = ICH_V9_GPIO, 373 }, 374 [LPC_ICH9ME] = { 375 .name = "ICH9M-E", 376 .iTCO_version = 2, 377 .gpio_version = ICH_V9_GPIO, 378 }, 379 [LPC_ICH10] = { 380 .name = "ICH10", 381 .iTCO_version = 2, 382 .gpio_version = ICH_V10CONS_GPIO, 383 }, 384 [LPC_ICH10R] = { 385 .name = "ICH10R", 386 .iTCO_version = 2, 387 .gpio_version = ICH_V10CONS_GPIO, 388 }, 389 [LPC_ICH10D] = { 390 .name = "ICH10D", 391 .iTCO_version = 2, 392 .gpio_version = ICH_V10CORP_GPIO, 393 }, 394 [LPC_ICH10DO] = { 395 .name = "ICH10DO", 396 .iTCO_version = 2, 397 .gpio_version = ICH_V10CORP_GPIO, 398 }, 399 [LPC_PCH] = { 400 .name = "PCH Desktop Full Featured", 401 .iTCO_version = 2, 402 .gpio_version = ICH_V5_GPIO, 403 }, 404 [LPC_PCHM] = { 405 .name = "PCH Mobile Full Featured", 406 .iTCO_version = 2, 407 .gpio_version = ICH_V5_GPIO, 408 }, 409 [LPC_P55] = { 410 .name = "P55", 411 .iTCO_version = 2, 412 .gpio_version = ICH_V5_GPIO, 413 }, 414 [LPC_PM55] = { 415 .name = "PM55", 416 .iTCO_version = 2, 417 .gpio_version = ICH_V5_GPIO, 418 }, 419 [LPC_H55] = { 420 .name = "H55", 421 .iTCO_version = 2, 422 .gpio_version = ICH_V5_GPIO, 423 }, 424 [LPC_QM57] = { 425 .name = "QM57", 426 .iTCO_version = 2, 427 .gpio_version = ICH_V5_GPIO, 428 }, 429 [LPC_H57] = { 430 .name = "H57", 431 .iTCO_version = 2, 432 .gpio_version = ICH_V5_GPIO, 433 }, 434 [LPC_HM55] = { 435 .name = "HM55", 436 .iTCO_version = 2, 437 .gpio_version = ICH_V5_GPIO, 438 }, 439 [LPC_Q57] = { 440 .name = "Q57", 441 .iTCO_version = 2, 442 .gpio_version = ICH_V5_GPIO, 443 }, 444 [LPC_HM57] = { 445 .name = "HM57", 446 .iTCO_version = 2, 447 .gpio_version = ICH_V5_GPIO, 448 }, 449 [LPC_PCHMSFF] = { 450 .name = "PCH Mobile SFF Full Featured", 451 .iTCO_version = 2, 452 .gpio_version = ICH_V5_GPIO, 453 }, 454 [LPC_QS57] = { 455 .name = "QS57", 456 .iTCO_version = 2, 457 .gpio_version = ICH_V5_GPIO, 458 }, 459 [LPC_3400] = { 460 .name = "3400", 461 .iTCO_version = 2, 462 .gpio_version = ICH_V5_GPIO, 463 }, 464 [LPC_3420] = { 465 .name = "3420", 466 .iTCO_version = 2, 467 .gpio_version = ICH_V5_GPIO, 468 }, 469 [LPC_3450] = { 470 .name = "3450", 471 .iTCO_version = 2, 472 .gpio_version = ICH_V5_GPIO, 473 }, 474 [LPC_EP80579] = { 475 .name = "EP80579", 476 .iTCO_version = 2, 477 }, 478 [LPC_CPT] = { 479 .name = "Cougar Point", 480 .iTCO_version = 2, 481 .gpio_version = ICH_V5_GPIO, 482 }, 483 [LPC_CPTD] = { 484 .name = "Cougar Point Desktop", 485 .iTCO_version = 2, 486 .gpio_version = ICH_V5_GPIO, 487 }, 488 [LPC_CPTM] = { 489 .name = "Cougar Point Mobile", 490 .iTCO_version = 2, 491 .gpio_version = ICH_V5_GPIO, 492 }, 493 [LPC_PBG] = { 494 .name = "Patsburg", 495 .iTCO_version = 2, 496 }, 497 [LPC_DH89XXCC] = { 498 .name = "DH89xxCC", 499 .iTCO_version = 2, 500 }, 501 [LPC_PPT] = { 502 .name = "Panther Point", 503 .iTCO_version = 2, 504 .gpio_version = ICH_V5_GPIO, 505 }, 506 [LPC_LPT] = { 507 .name = "Lynx Point", 508 .iTCO_version = 2, 509 .gpio_version = ICH_V5_GPIO, 510 .spi_type = INTEL_SPI_LPT, 511 }, 512 [LPC_LPT_LP] = { 513 .name = "Lynx Point_LP", 514 .iTCO_version = 2, 515 .spi_type = INTEL_SPI_LPT, 516 }, 517 [LPC_WBG] = { 518 .name = "Wellsburg", 519 .iTCO_version = 2, 520 }, 521 [LPC_AVN] = { 522 .name = "Avoton SoC", 523 .iTCO_version = 3, 524 .gpio_version = AVOTON_GPIO, 525 .spi_type = INTEL_SPI_BYT, 526 }, 527 [LPC_BAYTRAIL] = { 528 .name = "Bay Trail SoC", 529 .iTCO_version = 3, 530 .spi_type = INTEL_SPI_BYT, 531 }, 532 [LPC_COLETO] = { 533 .name = "Coleto Creek", 534 .iTCO_version = 2, 535 }, 536 [LPC_WPT_LP] = { 537 .name = "Wildcat Point_LP", 538 .iTCO_version = 2, 539 .spi_type = INTEL_SPI_LPT, 540 }, 541 [LPC_BRASWELL] = { 542 .name = "Braswell SoC", 543 .iTCO_version = 3, 544 .spi_type = INTEL_SPI_BYT, 545 }, 546 [LPC_LEWISBURG] = { 547 .name = "Lewisburg", 548 .iTCO_version = 2, 549 }, 550 [LPC_9S] = { 551 .name = "9 Series", 552 .iTCO_version = 2, 553 .gpio_version = ICH_V5_GPIO, 554 }, 555 [LPC_APL] = { 556 .name = "Apollo Lake SoC", 557 .iTCO_version = 5, 558 .spi_type = INTEL_SPI_BXT, 559 }, 560 [LPC_GLK] = { 561 .name = "Gemini Lake SoC", 562 .spi_type = INTEL_SPI_BXT, 563 }, 564 [LPC_COUGARMOUNTAIN] = { 565 .name = "Cougar Mountain SoC", 566 .iTCO_version = 3, 567 }, 568 }; 569 570 /* 571 * This data only exists for exporting the supported PCI ids 572 * via MODULE_DEVICE_TABLE. We do not actually register a 573 * pci_driver, because the I/O Controller Hub has also other 574 * functions that probably will be registered by other drivers. 575 */ 576 static const struct pci_device_id lpc_ich_ids[] = { 577 { PCI_VDEVICE(INTEL, 0x0f1c), LPC_BAYTRAIL}, 578 { PCI_VDEVICE(INTEL, 0x1c41), LPC_CPT}, 579 { PCI_VDEVICE(INTEL, 0x1c42), LPC_CPTD}, 580 { PCI_VDEVICE(INTEL, 0x1c43), LPC_CPTM}, 581 { PCI_VDEVICE(INTEL, 0x1c44), LPC_CPT}, 582 { PCI_VDEVICE(INTEL, 0x1c45), LPC_CPT}, 583 { PCI_VDEVICE(INTEL, 0x1c46), LPC_CPT}, 584 { PCI_VDEVICE(INTEL, 0x1c47), LPC_CPT}, 585 { PCI_VDEVICE(INTEL, 0x1c48), LPC_CPT}, 586 { PCI_VDEVICE(INTEL, 0x1c49), LPC_CPT}, 587 { PCI_VDEVICE(INTEL, 0x1c4a), LPC_CPT}, 588 { PCI_VDEVICE(INTEL, 0x1c4b), LPC_CPT}, 589 { PCI_VDEVICE(INTEL, 0x1c4c), LPC_CPT}, 590 { PCI_VDEVICE(INTEL, 0x1c4d), LPC_CPT}, 591 { PCI_VDEVICE(INTEL, 0x1c4e), LPC_CPT}, 592 { PCI_VDEVICE(INTEL, 0x1c4f), LPC_CPT}, 593 { PCI_VDEVICE(INTEL, 0x1c50), LPC_CPT}, 594 { PCI_VDEVICE(INTEL, 0x1c51), LPC_CPT}, 595 { PCI_VDEVICE(INTEL, 0x1c52), LPC_CPT}, 596 { PCI_VDEVICE(INTEL, 0x1c53), LPC_CPT}, 597 { PCI_VDEVICE(INTEL, 0x1c54), LPC_CPT}, 598 { PCI_VDEVICE(INTEL, 0x1c55), LPC_CPT}, 599 { PCI_VDEVICE(INTEL, 0x1c56), LPC_CPT}, 600 { PCI_VDEVICE(INTEL, 0x1c57), LPC_CPT}, 601 { PCI_VDEVICE(INTEL, 0x1c58), LPC_CPT}, 602 { PCI_VDEVICE(INTEL, 0x1c59), LPC_CPT}, 603 { PCI_VDEVICE(INTEL, 0x1c5a), LPC_CPT}, 604 { PCI_VDEVICE(INTEL, 0x1c5b), LPC_CPT}, 605 { PCI_VDEVICE(INTEL, 0x1c5c), LPC_CPT}, 606 { PCI_VDEVICE(INTEL, 0x1c5d), LPC_CPT}, 607 { PCI_VDEVICE(INTEL, 0x1c5e), LPC_CPT}, 608 { PCI_VDEVICE(INTEL, 0x1c5f), LPC_CPT}, 609 { PCI_VDEVICE(INTEL, 0x1d40), LPC_PBG}, 610 { PCI_VDEVICE(INTEL, 0x1d41), LPC_PBG}, 611 { PCI_VDEVICE(INTEL, 0x1e40), LPC_PPT}, 612 { PCI_VDEVICE(INTEL, 0x1e41), LPC_PPT}, 613 { PCI_VDEVICE(INTEL, 0x1e42), LPC_PPT}, 614 { PCI_VDEVICE(INTEL, 0x1e43), LPC_PPT}, 615 { PCI_VDEVICE(INTEL, 0x1e44), LPC_PPT}, 616 { PCI_VDEVICE(INTEL, 0x1e45), LPC_PPT}, 617 { PCI_VDEVICE(INTEL, 0x1e46), LPC_PPT}, 618 { PCI_VDEVICE(INTEL, 0x1e47), LPC_PPT}, 619 { PCI_VDEVICE(INTEL, 0x1e48), LPC_PPT}, 620 { PCI_VDEVICE(INTEL, 0x1e49), LPC_PPT}, 621 { PCI_VDEVICE(INTEL, 0x1e4a), LPC_PPT}, 622 { PCI_VDEVICE(INTEL, 0x1e4b), LPC_PPT}, 623 { PCI_VDEVICE(INTEL, 0x1e4c), LPC_PPT}, 624 { PCI_VDEVICE(INTEL, 0x1e4d), LPC_PPT}, 625 { PCI_VDEVICE(INTEL, 0x1e4e), LPC_PPT}, 626 { PCI_VDEVICE(INTEL, 0x1e4f), LPC_PPT}, 627 { PCI_VDEVICE(INTEL, 0x1e50), LPC_PPT}, 628 { PCI_VDEVICE(INTEL, 0x1e51), LPC_PPT}, 629 { PCI_VDEVICE(INTEL, 0x1e52), LPC_PPT}, 630 { PCI_VDEVICE(INTEL, 0x1e53), LPC_PPT}, 631 { PCI_VDEVICE(INTEL, 0x1e54), LPC_PPT}, 632 { PCI_VDEVICE(INTEL, 0x1e55), LPC_PPT}, 633 { PCI_VDEVICE(INTEL, 0x1e56), LPC_PPT}, 634 { PCI_VDEVICE(INTEL, 0x1e57), LPC_PPT}, 635 { PCI_VDEVICE(INTEL, 0x1e58), LPC_PPT}, 636 { PCI_VDEVICE(INTEL, 0x1e59), LPC_PPT}, 637 { PCI_VDEVICE(INTEL, 0x1e5a), LPC_PPT}, 638 { PCI_VDEVICE(INTEL, 0x1e5b), LPC_PPT}, 639 { PCI_VDEVICE(INTEL, 0x1e5c), LPC_PPT}, 640 { PCI_VDEVICE(INTEL, 0x1e5d), LPC_PPT}, 641 { PCI_VDEVICE(INTEL, 0x1e5e), LPC_PPT}, 642 { PCI_VDEVICE(INTEL, 0x1e5f), LPC_PPT}, 643 { PCI_VDEVICE(INTEL, 0x1f38), LPC_AVN}, 644 { PCI_VDEVICE(INTEL, 0x1f39), LPC_AVN}, 645 { PCI_VDEVICE(INTEL, 0x1f3a), LPC_AVN}, 646 { PCI_VDEVICE(INTEL, 0x1f3b), LPC_AVN}, 647 { PCI_VDEVICE(INTEL, 0x229c), LPC_BRASWELL}, 648 { PCI_VDEVICE(INTEL, 0x2310), LPC_DH89XXCC}, 649 { PCI_VDEVICE(INTEL, 0x2390), LPC_COLETO}, 650 { PCI_VDEVICE(INTEL, 0x2410), LPC_ICH}, 651 { PCI_VDEVICE(INTEL, 0x2420), LPC_ICH0}, 652 { PCI_VDEVICE(INTEL, 0x2440), LPC_ICH2}, 653 { PCI_VDEVICE(INTEL, 0x244c), LPC_ICH2M}, 654 { PCI_VDEVICE(INTEL, 0x2450), LPC_CICH}, 655 { PCI_VDEVICE(INTEL, 0x2480), LPC_ICH3}, 656 { PCI_VDEVICE(INTEL, 0x248c), LPC_ICH3M}, 657 { PCI_VDEVICE(INTEL, 0x24c0), LPC_ICH4}, 658 { PCI_VDEVICE(INTEL, 0x24cc), LPC_ICH4M}, 659 { PCI_VDEVICE(INTEL, 0x24d0), LPC_ICH5}, 660 { PCI_VDEVICE(INTEL, 0x25a1), LPC_6300ESB}, 661 { PCI_VDEVICE(INTEL, 0x2640), LPC_ICH6}, 662 { PCI_VDEVICE(INTEL, 0x2641), LPC_ICH6M}, 663 { PCI_VDEVICE(INTEL, 0x2642), LPC_ICH6W}, 664 { PCI_VDEVICE(INTEL, 0x2670), LPC_631XESB}, 665 { PCI_VDEVICE(INTEL, 0x2671), LPC_631XESB}, 666 { PCI_VDEVICE(INTEL, 0x2672), LPC_631XESB}, 667 { PCI_VDEVICE(INTEL, 0x2673), LPC_631XESB}, 668 { PCI_VDEVICE(INTEL, 0x2674), LPC_631XESB}, 669 { PCI_VDEVICE(INTEL, 0x2675), LPC_631XESB}, 670 { PCI_VDEVICE(INTEL, 0x2676), LPC_631XESB}, 671 { PCI_VDEVICE(INTEL, 0x2677), LPC_631XESB}, 672 { PCI_VDEVICE(INTEL, 0x2678), LPC_631XESB}, 673 { PCI_VDEVICE(INTEL, 0x2679), LPC_631XESB}, 674 { PCI_VDEVICE(INTEL, 0x267a), LPC_631XESB}, 675 { PCI_VDEVICE(INTEL, 0x267b), LPC_631XESB}, 676 { PCI_VDEVICE(INTEL, 0x267c), LPC_631XESB}, 677 { PCI_VDEVICE(INTEL, 0x267d), LPC_631XESB}, 678 { PCI_VDEVICE(INTEL, 0x267e), LPC_631XESB}, 679 { PCI_VDEVICE(INTEL, 0x267f), LPC_631XESB}, 680 { PCI_VDEVICE(INTEL, 0x27b0), LPC_ICH7DH}, 681 { PCI_VDEVICE(INTEL, 0x27b8), LPC_ICH7}, 682 { PCI_VDEVICE(INTEL, 0x27b9), LPC_ICH7M}, 683 { PCI_VDEVICE(INTEL, 0x27bc), LPC_NM10}, 684 { PCI_VDEVICE(INTEL, 0x27bd), LPC_ICH7MDH}, 685 { PCI_VDEVICE(INTEL, 0x2810), LPC_ICH8}, 686 { PCI_VDEVICE(INTEL, 0x2811), LPC_ICH8ME}, 687 { PCI_VDEVICE(INTEL, 0x2812), LPC_ICH8DH}, 688 { PCI_VDEVICE(INTEL, 0x2814), LPC_ICH8DO}, 689 { PCI_VDEVICE(INTEL, 0x2815), LPC_ICH8M}, 690 { PCI_VDEVICE(INTEL, 0x2912), LPC_ICH9DH}, 691 { PCI_VDEVICE(INTEL, 0x2914), LPC_ICH9DO}, 692 { PCI_VDEVICE(INTEL, 0x2916), LPC_ICH9R}, 693 { PCI_VDEVICE(INTEL, 0x2917), LPC_ICH9ME}, 694 { PCI_VDEVICE(INTEL, 0x2918), LPC_ICH9}, 695 { PCI_VDEVICE(INTEL, 0x2919), LPC_ICH9M}, 696 { PCI_VDEVICE(INTEL, 0x3197), LPC_GLK}, 697 { PCI_VDEVICE(INTEL, 0x2b9c), LPC_COUGARMOUNTAIN}, 698 { PCI_VDEVICE(INTEL, 0x3a14), LPC_ICH10DO}, 699 { PCI_VDEVICE(INTEL, 0x3a16), LPC_ICH10R}, 700 { PCI_VDEVICE(INTEL, 0x3a18), LPC_ICH10}, 701 { PCI_VDEVICE(INTEL, 0x3a1a), LPC_ICH10D}, 702 { PCI_VDEVICE(INTEL, 0x3b00), LPC_PCH}, 703 { PCI_VDEVICE(INTEL, 0x3b01), LPC_PCHM}, 704 { PCI_VDEVICE(INTEL, 0x3b02), LPC_P55}, 705 { PCI_VDEVICE(INTEL, 0x3b03), LPC_PM55}, 706 { PCI_VDEVICE(INTEL, 0x3b06), LPC_H55}, 707 { PCI_VDEVICE(INTEL, 0x3b07), LPC_QM57}, 708 { PCI_VDEVICE(INTEL, 0x3b08), LPC_H57}, 709 { PCI_VDEVICE(INTEL, 0x3b09), LPC_HM55}, 710 { PCI_VDEVICE(INTEL, 0x3b0a), LPC_Q57}, 711 { PCI_VDEVICE(INTEL, 0x3b0b), LPC_HM57}, 712 { PCI_VDEVICE(INTEL, 0x3b0d), LPC_PCHMSFF}, 713 { PCI_VDEVICE(INTEL, 0x3b0f), LPC_QS57}, 714 { PCI_VDEVICE(INTEL, 0x3b12), LPC_3400}, 715 { PCI_VDEVICE(INTEL, 0x3b14), LPC_3420}, 716 { PCI_VDEVICE(INTEL, 0x3b16), LPC_3450}, 717 { PCI_VDEVICE(INTEL, 0x5031), LPC_EP80579}, 718 { PCI_VDEVICE(INTEL, 0x5ae8), LPC_APL}, 719 { PCI_VDEVICE(INTEL, 0x8c40), LPC_LPT}, 720 { PCI_VDEVICE(INTEL, 0x8c41), LPC_LPT}, 721 { PCI_VDEVICE(INTEL, 0x8c42), LPC_LPT}, 722 { PCI_VDEVICE(INTEL, 0x8c43), LPC_LPT}, 723 { PCI_VDEVICE(INTEL, 0x8c44), LPC_LPT}, 724 { PCI_VDEVICE(INTEL, 0x8c45), LPC_LPT}, 725 { PCI_VDEVICE(INTEL, 0x8c46), LPC_LPT}, 726 { PCI_VDEVICE(INTEL, 0x8c47), LPC_LPT}, 727 { PCI_VDEVICE(INTEL, 0x8c48), LPC_LPT}, 728 { PCI_VDEVICE(INTEL, 0x8c49), LPC_LPT}, 729 { PCI_VDEVICE(INTEL, 0x8c4a), LPC_LPT}, 730 { PCI_VDEVICE(INTEL, 0x8c4b), LPC_LPT}, 731 { PCI_VDEVICE(INTEL, 0x8c4c), LPC_LPT}, 732 { PCI_VDEVICE(INTEL, 0x8c4d), LPC_LPT}, 733 { PCI_VDEVICE(INTEL, 0x8c4e), LPC_LPT}, 734 { PCI_VDEVICE(INTEL, 0x8c4f), LPC_LPT}, 735 { PCI_VDEVICE(INTEL, 0x8c50), LPC_LPT}, 736 { PCI_VDEVICE(INTEL, 0x8c51), LPC_LPT}, 737 { PCI_VDEVICE(INTEL, 0x8c52), LPC_LPT}, 738 { PCI_VDEVICE(INTEL, 0x8c53), LPC_LPT}, 739 { PCI_VDEVICE(INTEL, 0x8c54), LPC_LPT}, 740 { PCI_VDEVICE(INTEL, 0x8c55), LPC_LPT}, 741 { PCI_VDEVICE(INTEL, 0x8c56), LPC_LPT}, 742 { PCI_VDEVICE(INTEL, 0x8c57), LPC_LPT}, 743 { PCI_VDEVICE(INTEL, 0x8c58), LPC_LPT}, 744 { PCI_VDEVICE(INTEL, 0x8c59), LPC_LPT}, 745 { PCI_VDEVICE(INTEL, 0x8c5a), LPC_LPT}, 746 { PCI_VDEVICE(INTEL, 0x8c5b), LPC_LPT}, 747 { PCI_VDEVICE(INTEL, 0x8c5c), LPC_LPT}, 748 { PCI_VDEVICE(INTEL, 0x8c5d), LPC_LPT}, 749 { PCI_VDEVICE(INTEL, 0x8c5e), LPC_LPT}, 750 { PCI_VDEVICE(INTEL, 0x8c5f), LPC_LPT}, 751 { PCI_VDEVICE(INTEL, 0x8cc1), LPC_9S}, 752 { PCI_VDEVICE(INTEL, 0x8cc2), LPC_9S}, 753 { PCI_VDEVICE(INTEL, 0x8cc3), LPC_9S}, 754 { PCI_VDEVICE(INTEL, 0x8cc4), LPC_9S}, 755 { PCI_VDEVICE(INTEL, 0x8cc6), LPC_9S}, 756 { PCI_VDEVICE(INTEL, 0x8d40), LPC_WBG}, 757 { PCI_VDEVICE(INTEL, 0x8d41), LPC_WBG}, 758 { PCI_VDEVICE(INTEL, 0x8d42), LPC_WBG}, 759 { PCI_VDEVICE(INTEL, 0x8d43), LPC_WBG}, 760 { PCI_VDEVICE(INTEL, 0x8d44), LPC_WBG}, 761 { PCI_VDEVICE(INTEL, 0x8d45), LPC_WBG}, 762 { PCI_VDEVICE(INTEL, 0x8d46), LPC_WBG}, 763 { PCI_VDEVICE(INTEL, 0x8d47), LPC_WBG}, 764 { PCI_VDEVICE(INTEL, 0x8d48), LPC_WBG}, 765 { PCI_VDEVICE(INTEL, 0x8d49), LPC_WBG}, 766 { PCI_VDEVICE(INTEL, 0x8d4a), LPC_WBG}, 767 { PCI_VDEVICE(INTEL, 0x8d4b), LPC_WBG}, 768 { PCI_VDEVICE(INTEL, 0x8d4c), LPC_WBG}, 769 { PCI_VDEVICE(INTEL, 0x8d4d), LPC_WBG}, 770 { PCI_VDEVICE(INTEL, 0x8d4e), LPC_WBG}, 771 { PCI_VDEVICE(INTEL, 0x8d4f), LPC_WBG}, 772 { PCI_VDEVICE(INTEL, 0x8d50), LPC_WBG}, 773 { PCI_VDEVICE(INTEL, 0x8d51), LPC_WBG}, 774 { PCI_VDEVICE(INTEL, 0x8d52), LPC_WBG}, 775 { PCI_VDEVICE(INTEL, 0x8d53), LPC_WBG}, 776 { PCI_VDEVICE(INTEL, 0x8d54), LPC_WBG}, 777 { PCI_VDEVICE(INTEL, 0x8d55), LPC_WBG}, 778 { PCI_VDEVICE(INTEL, 0x8d56), LPC_WBG}, 779 { PCI_VDEVICE(INTEL, 0x8d57), LPC_WBG}, 780 { PCI_VDEVICE(INTEL, 0x8d58), LPC_WBG}, 781 { PCI_VDEVICE(INTEL, 0x8d59), LPC_WBG}, 782 { PCI_VDEVICE(INTEL, 0x8d5a), LPC_WBG}, 783 { PCI_VDEVICE(INTEL, 0x8d5b), LPC_WBG}, 784 { PCI_VDEVICE(INTEL, 0x8d5c), LPC_WBG}, 785 { PCI_VDEVICE(INTEL, 0x8d5d), LPC_WBG}, 786 { PCI_VDEVICE(INTEL, 0x8d5e), LPC_WBG}, 787 { PCI_VDEVICE(INTEL, 0x8d5f), LPC_WBG}, 788 { PCI_VDEVICE(INTEL, 0x9c40), LPC_LPT_LP}, 789 { PCI_VDEVICE(INTEL, 0x9c41), LPC_LPT_LP}, 790 { PCI_VDEVICE(INTEL, 0x9c42), LPC_LPT_LP}, 791 { PCI_VDEVICE(INTEL, 0x9c43), LPC_LPT_LP}, 792 { PCI_VDEVICE(INTEL, 0x9c44), LPC_LPT_LP}, 793 { PCI_VDEVICE(INTEL, 0x9c45), LPC_LPT_LP}, 794 { PCI_VDEVICE(INTEL, 0x9c46), LPC_LPT_LP}, 795 { PCI_VDEVICE(INTEL, 0x9c47), LPC_LPT_LP}, 796 { PCI_VDEVICE(INTEL, 0x9cc1), LPC_WPT_LP}, 797 { PCI_VDEVICE(INTEL, 0x9cc2), LPC_WPT_LP}, 798 { PCI_VDEVICE(INTEL, 0x9cc3), LPC_WPT_LP}, 799 { PCI_VDEVICE(INTEL, 0x9cc5), LPC_WPT_LP}, 800 { PCI_VDEVICE(INTEL, 0x9cc6), LPC_WPT_LP}, 801 { PCI_VDEVICE(INTEL, 0x9cc7), LPC_WPT_LP}, 802 { PCI_VDEVICE(INTEL, 0x9cc9), LPC_WPT_LP}, 803 { PCI_VDEVICE(INTEL, 0xa1c1), LPC_LEWISBURG}, 804 { PCI_VDEVICE(INTEL, 0xa1c2), LPC_LEWISBURG}, 805 { PCI_VDEVICE(INTEL, 0xa1c3), LPC_LEWISBURG}, 806 { PCI_VDEVICE(INTEL, 0xa1c4), LPC_LEWISBURG}, 807 { PCI_VDEVICE(INTEL, 0xa1c5), LPC_LEWISBURG}, 808 { PCI_VDEVICE(INTEL, 0xa1c6), LPC_LEWISBURG}, 809 { PCI_VDEVICE(INTEL, 0xa1c7), LPC_LEWISBURG}, 810 { PCI_VDEVICE(INTEL, 0xa242), LPC_LEWISBURG}, 811 { PCI_VDEVICE(INTEL, 0xa243), LPC_LEWISBURG}, 812 { 0, }, /* End of list */ 813 }; 814 MODULE_DEVICE_TABLE(pci, lpc_ich_ids); 815 816 static void lpc_ich_restore_config_space(struct pci_dev *dev) 817 { 818 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 819 820 if (priv->abase_save >= 0) { 821 pci_write_config_byte(dev, priv->abase, priv->abase_save); 822 priv->abase_save = -1; 823 } 824 825 if (priv->actrl_pbase_save >= 0) { 826 pci_write_config_byte(dev, priv->actrl_pbase, 827 priv->actrl_pbase_save); 828 priv->actrl_pbase_save = -1; 829 } 830 831 if (priv->gctrl_save >= 0) { 832 pci_write_config_byte(dev, priv->gctrl, priv->gctrl_save); 833 priv->gctrl_save = -1; 834 } 835 } 836 837 static void lpc_ich_enable_acpi_space(struct pci_dev *dev) 838 { 839 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 840 u8 reg_save; 841 842 switch (lpc_chipset_info[priv->chipset].iTCO_version) { 843 case 3: 844 /* 845 * Some chipsets (eg Avoton) enable the ACPI space in the 846 * ACPI BASE register. 847 */ 848 pci_read_config_byte(dev, priv->abase, ®_save); 849 pci_write_config_byte(dev, priv->abase, reg_save | 0x2); 850 priv->abase_save = reg_save; 851 break; 852 default: 853 /* 854 * Most chipsets enable the ACPI space in the ACPI control 855 * register. 856 */ 857 pci_read_config_byte(dev, priv->actrl_pbase, ®_save); 858 pci_write_config_byte(dev, priv->actrl_pbase, reg_save | 0x80); 859 priv->actrl_pbase_save = reg_save; 860 break; 861 } 862 } 863 864 static void lpc_ich_enable_gpio_space(struct pci_dev *dev) 865 { 866 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 867 u8 reg_save; 868 869 pci_read_config_byte(dev, priv->gctrl, ®_save); 870 pci_write_config_byte(dev, priv->gctrl, reg_save | 0x10); 871 priv->gctrl_save = reg_save; 872 } 873 874 static void lpc_ich_enable_pmc_space(struct pci_dev *dev) 875 { 876 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 877 u8 reg_save; 878 879 pci_read_config_byte(dev, priv->actrl_pbase, ®_save); 880 pci_write_config_byte(dev, priv->actrl_pbase, reg_save | 0x2); 881 882 priv->actrl_pbase_save = reg_save; 883 } 884 885 static int lpc_ich_finalize_wdt_cell(struct pci_dev *dev) 886 { 887 struct itco_wdt_platform_data *pdata; 888 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 889 struct lpc_ich_info *info; 890 struct mfd_cell *cell = &lpc_ich_wdt_cell; 891 892 pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL); 893 if (!pdata) 894 return -ENOMEM; 895 896 info = &lpc_chipset_info[priv->chipset]; 897 898 pdata->version = info->iTCO_version; 899 strlcpy(pdata->name, info->name, sizeof(pdata->name)); 900 901 cell->platform_data = pdata; 902 cell->pdata_size = sizeof(*pdata); 903 return 0; 904 } 905 906 static void lpc_ich_finalize_gpio_cell(struct pci_dev *dev) 907 { 908 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 909 struct mfd_cell *cell = &lpc_ich_gpio_cell; 910 911 cell->platform_data = &lpc_chipset_info[priv->chipset]; 912 cell->pdata_size = sizeof(struct lpc_ich_info); 913 } 914 915 /* 916 * We don't check for resource conflict globally. There are 2 or 3 independent 917 * GPIO groups and it's enough to have access to one of these to instantiate 918 * the device. 919 */ 920 static int lpc_ich_check_conflict_gpio(struct resource *res) 921 { 922 int ret; 923 u8 use_gpio = 0; 924 925 if (resource_size(res) >= 0x50 && 926 !acpi_check_region(res->start + 0x40, 0x10, "LPC ICH GPIO3")) 927 use_gpio |= 1 << 2; 928 929 if (!acpi_check_region(res->start + 0x30, 0x10, "LPC ICH GPIO2")) 930 use_gpio |= 1 << 1; 931 932 ret = acpi_check_region(res->start + 0x00, 0x30, "LPC ICH GPIO1"); 933 if (!ret) 934 use_gpio |= 1 << 0; 935 936 return use_gpio ? use_gpio : ret; 937 } 938 939 static int lpc_ich_init_gpio(struct pci_dev *dev) 940 { 941 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 942 u32 base_addr_cfg; 943 u32 base_addr; 944 int ret; 945 bool acpi_conflict = false; 946 struct resource *res; 947 948 /* Setup power management base register */ 949 pci_read_config_dword(dev, priv->abase, &base_addr_cfg); 950 base_addr = base_addr_cfg & 0x0000ff80; 951 if (!base_addr) { 952 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n"); 953 lpc_ich_gpio_cell.num_resources--; 954 goto gpe0_done; 955 } 956 957 res = &gpio_ich_res[ICH_RES_GPE0]; 958 res->start = base_addr + ACPIBASE_GPE_OFF; 959 res->end = base_addr + ACPIBASE_GPE_END; 960 ret = acpi_check_resource_conflict(res); 961 if (ret) { 962 /* 963 * This isn't fatal for the GPIO, but we have to make sure that 964 * the platform_device subsystem doesn't see this resource 965 * or it will register an invalid region. 966 */ 967 lpc_ich_gpio_cell.num_resources--; 968 acpi_conflict = true; 969 } else { 970 lpc_ich_enable_acpi_space(dev); 971 } 972 973 gpe0_done: 974 /* Setup GPIO base register */ 975 pci_read_config_dword(dev, priv->gbase, &base_addr_cfg); 976 base_addr = base_addr_cfg & 0x0000ff80; 977 if (!base_addr) { 978 dev_notice(&dev->dev, "I/O space for GPIO uninitialized\n"); 979 ret = -ENODEV; 980 goto gpio_done; 981 } 982 983 /* Older devices provide fewer GPIO and have a smaller resource size. */ 984 res = &gpio_ich_res[ICH_RES_GPIO]; 985 res->start = base_addr; 986 switch (lpc_chipset_info[priv->chipset].gpio_version) { 987 case ICH_V5_GPIO: 988 case ICH_V10CORP_GPIO: 989 res->end = res->start + 128 - 1; 990 break; 991 default: 992 res->end = res->start + 64 - 1; 993 break; 994 } 995 996 ret = lpc_ich_check_conflict_gpio(res); 997 if (ret < 0) { 998 /* this isn't necessarily fatal for the GPIO */ 999 acpi_conflict = true; 1000 goto gpio_done; 1001 } 1002 lpc_chipset_info[priv->chipset].use_gpio = ret; 1003 lpc_ich_enable_gpio_space(dev); 1004 1005 lpc_ich_finalize_gpio_cell(dev); 1006 ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO, 1007 &lpc_ich_gpio_cell, 1, NULL, 0, NULL); 1008 1009 gpio_done: 1010 if (acpi_conflict) 1011 pr_warn("Resource conflict(s) found affecting %s\n", 1012 lpc_ich_gpio_cell.name); 1013 return ret; 1014 } 1015 1016 static int lpc_ich_init_wdt(struct pci_dev *dev) 1017 { 1018 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 1019 u32 base_addr_cfg; 1020 u32 base_addr; 1021 int ret; 1022 struct resource *res; 1023 1024 /* If we have ACPI based watchdog use that instead */ 1025 if (acpi_has_watchdog()) 1026 return -ENODEV; 1027 1028 /* Setup power management base register */ 1029 pci_read_config_dword(dev, priv->abase, &base_addr_cfg); 1030 base_addr = base_addr_cfg & 0x0000ff80; 1031 if (!base_addr) { 1032 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n"); 1033 ret = -ENODEV; 1034 goto wdt_done; 1035 } 1036 1037 res = wdt_io_res(ICH_RES_IO_TCO); 1038 res->start = base_addr + ACPIBASE_TCO_OFF; 1039 res->end = base_addr + ACPIBASE_TCO_END; 1040 1041 res = wdt_io_res(ICH_RES_IO_SMI); 1042 res->start = base_addr + ACPIBASE_SMI_OFF; 1043 res->end = base_addr + ACPIBASE_SMI_END; 1044 1045 lpc_ich_enable_acpi_space(dev); 1046 1047 /* 1048 * iTCO v2: 1049 * Get the Memory-Mapped GCS register. To get access to it 1050 * we have to read RCBA from PCI Config space 0xf0 and use 1051 * it as base. GCS = RCBA + ICH6_GCS(0x3410). 1052 * 1053 * iTCO v3: 1054 * Get the Power Management Configuration register. To get access 1055 * to it we have to read the PMC BASE from config space and address 1056 * the register at offset 0x8. 1057 */ 1058 if (lpc_chipset_info[priv->chipset].iTCO_version == 1) { 1059 /* Don't register iomem for TCO ver 1 */ 1060 lpc_ich_wdt_cell.num_resources--; 1061 } else if (lpc_chipset_info[priv->chipset].iTCO_version == 2) { 1062 pci_read_config_dword(dev, RCBABASE, &base_addr_cfg); 1063 base_addr = base_addr_cfg & 0xffffc000; 1064 if (!(base_addr_cfg & 1)) { 1065 dev_notice(&dev->dev, "RCBA is disabled by " 1066 "hardware/BIOS, device disabled\n"); 1067 ret = -ENODEV; 1068 goto wdt_done; 1069 } 1070 res = wdt_mem_res(ICH_RES_MEM_GCS_PMC); 1071 res->start = base_addr + ACPIBASE_GCS_OFF; 1072 res->end = base_addr + ACPIBASE_GCS_END; 1073 } else if (lpc_chipset_info[priv->chipset].iTCO_version == 3) { 1074 lpc_ich_enable_pmc_space(dev); 1075 pci_read_config_dword(dev, ACPICTRL_PMCBASE, &base_addr_cfg); 1076 base_addr = base_addr_cfg & 0xfffffe00; 1077 1078 res = wdt_mem_res(ICH_RES_MEM_GCS_PMC); 1079 res->start = base_addr + ACPIBASE_PMC_OFF; 1080 res->end = base_addr + ACPIBASE_PMC_END; 1081 } 1082 1083 ret = lpc_ich_finalize_wdt_cell(dev); 1084 if (ret) 1085 goto wdt_done; 1086 1087 ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO, 1088 &lpc_ich_wdt_cell, 1, NULL, 0, NULL); 1089 1090 wdt_done: 1091 return ret; 1092 } 1093 1094 static int lpc_ich_init_spi(struct pci_dev *dev) 1095 { 1096 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 1097 struct resource *res = &intel_spi_res[0]; 1098 struct intel_spi_boardinfo *info; 1099 u32 spi_base, rcba, bcr; 1100 1101 info = devm_kzalloc(&dev->dev, sizeof(*info), GFP_KERNEL); 1102 if (!info) 1103 return -ENOMEM; 1104 1105 info->type = lpc_chipset_info[priv->chipset].spi_type; 1106 1107 switch (info->type) { 1108 case INTEL_SPI_BYT: 1109 pci_read_config_dword(dev, SPIBASE_BYT, &spi_base); 1110 if (spi_base & SPIBASE_BYT_EN) { 1111 res->start = spi_base & ~(SPIBASE_BYT_SZ - 1); 1112 res->end = res->start + SPIBASE_BYT_SZ - 1; 1113 } 1114 break; 1115 1116 case INTEL_SPI_LPT: 1117 pci_read_config_dword(dev, RCBABASE, &rcba); 1118 if (rcba & 1) { 1119 spi_base = round_down(rcba, SPIBASE_LPT_SZ); 1120 res->start = spi_base + SPIBASE_LPT; 1121 res->end = res->start + SPIBASE_LPT_SZ - 1; 1122 1123 pci_read_config_dword(dev, BCR, &bcr); 1124 info->writeable = !!(bcr & BCR_WPD); 1125 } 1126 break; 1127 1128 case INTEL_SPI_BXT: { 1129 unsigned int p2sb = PCI_DEVFN(13, 0); 1130 unsigned int spi = PCI_DEVFN(13, 2); 1131 struct pci_bus *bus = dev->bus; 1132 1133 /* 1134 * The P2SB is hidden by BIOS and we need to unhide it in 1135 * order to read BAR of the SPI flash device. Once that is 1136 * done we hide it again. 1137 */ 1138 pci_bus_write_config_byte(bus, p2sb, 0xe1, 0x0); 1139 pci_bus_read_config_dword(bus, spi, PCI_BASE_ADDRESS_0, 1140 &spi_base); 1141 if (spi_base != ~0) { 1142 res->start = spi_base & 0xfffffff0; 1143 res->end = res->start + SPIBASE_APL_SZ - 1; 1144 1145 pci_bus_read_config_dword(bus, spi, BCR, &bcr); 1146 if (!(bcr & BCR_WPD)) { 1147 bcr |= BCR_WPD; 1148 pci_bus_write_config_dword(bus, spi, BCR, bcr); 1149 pci_bus_read_config_dword(bus, spi, BCR, &bcr); 1150 } 1151 info->writeable = !!(bcr & BCR_WPD); 1152 } 1153 1154 pci_bus_write_config_byte(bus, p2sb, 0xe1, 0x1); 1155 break; 1156 } 1157 1158 default: 1159 return -EINVAL; 1160 } 1161 1162 if (!res->start) 1163 return -ENODEV; 1164 1165 lpc_ich_spi_cell.platform_data = info; 1166 lpc_ich_spi_cell.pdata_size = sizeof(*info); 1167 1168 return mfd_add_devices(&dev->dev, PLATFORM_DEVID_NONE, 1169 &lpc_ich_spi_cell, 1, NULL, 0, NULL); 1170 } 1171 1172 static int lpc_ich_probe(struct pci_dev *dev, 1173 const struct pci_device_id *id) 1174 { 1175 struct lpc_ich_priv *priv; 1176 int ret; 1177 bool cell_added = false; 1178 1179 priv = devm_kzalloc(&dev->dev, 1180 sizeof(struct lpc_ich_priv), GFP_KERNEL); 1181 if (!priv) 1182 return -ENOMEM; 1183 1184 priv->chipset = id->driver_data; 1185 1186 priv->actrl_pbase_save = -1; 1187 priv->abase_save = -1; 1188 1189 priv->abase = ACPIBASE; 1190 priv->actrl_pbase = ACPICTRL_PMCBASE; 1191 1192 priv->gctrl_save = -1; 1193 if (priv->chipset <= LPC_ICH5) { 1194 priv->gbase = GPIOBASE_ICH0; 1195 priv->gctrl = GPIOCTRL_ICH0; 1196 } else { 1197 priv->gbase = GPIOBASE_ICH6; 1198 priv->gctrl = GPIOCTRL_ICH6; 1199 } 1200 1201 pci_set_drvdata(dev, priv); 1202 1203 if (lpc_chipset_info[priv->chipset].iTCO_version) { 1204 ret = lpc_ich_init_wdt(dev); 1205 if (!ret) 1206 cell_added = true; 1207 } 1208 1209 if (lpc_chipset_info[priv->chipset].gpio_version) { 1210 ret = lpc_ich_init_gpio(dev); 1211 if (!ret) 1212 cell_added = true; 1213 } 1214 1215 if (lpc_chipset_info[priv->chipset].spi_type) { 1216 ret = lpc_ich_init_spi(dev); 1217 if (!ret) 1218 cell_added = true; 1219 } 1220 1221 /* 1222 * We only care if at least one or none of the cells registered 1223 * successfully. 1224 */ 1225 if (!cell_added) { 1226 dev_warn(&dev->dev, "No MFD cells added\n"); 1227 lpc_ich_restore_config_space(dev); 1228 return -ENODEV; 1229 } 1230 1231 return 0; 1232 } 1233 1234 static void lpc_ich_remove(struct pci_dev *dev) 1235 { 1236 mfd_remove_devices(&dev->dev); 1237 lpc_ich_restore_config_space(dev); 1238 } 1239 1240 static struct pci_driver lpc_ich_driver = { 1241 .name = "lpc_ich", 1242 .id_table = lpc_ich_ids, 1243 .probe = lpc_ich_probe, 1244 .remove = lpc_ich_remove, 1245 }; 1246 1247 module_pci_driver(lpc_ich_driver); 1248 1249 MODULE_AUTHOR("Aaron Sierra <asierra@xes-inc.com>"); 1250 MODULE_DESCRIPTION("LPC interface for Intel ICH"); 1251 MODULE_LICENSE("GPL"); 1252