1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * lpc_ich.c - LPC interface for Intel ICH 4 * 5 * LPC bridge function of the Intel ICH contains many other 6 * functional units, such as Interrupt controllers, Timers, 7 * Power Management, System Management, GPIO, RTC, and LPC 8 * Configuration Registers. 9 * 10 * This driver is derived from lpc_sch. 11 * 12 * Copyright (c) 2017, 2021-2022 Intel Corporation 13 * Copyright (c) 2011 Extreme Engineering Solution, Inc. 14 * Author: Aaron Sierra <asierra@xes-inc.com> 15 * 16 * This driver supports the following I/O Controller hubs: 17 * (See the intel documentation on http://developer.intel.com.) 18 * document number 290655-003, 290677-014: 82801AA (ICH), 82801AB (ICHO) 19 * document number 290687-002, 298242-027: 82801BA (ICH2) 20 * document number 290733-003, 290739-013: 82801CA (ICH3-S) 21 * document number 290716-001, 290718-007: 82801CAM (ICH3-M) 22 * document number 290744-001, 290745-025: 82801DB (ICH4) 23 * document number 252337-001, 252663-008: 82801DBM (ICH4-M) 24 * document number 273599-001, 273645-002: 82801E (C-ICH) 25 * document number 252516-001, 252517-028: 82801EB (ICH5), 82801ER (ICH5R) 26 * document number 300641-004, 300884-013: 6300ESB 27 * document number 301473-002, 301474-026: 82801F (ICH6) 28 * document number 313082-001, 313075-006: 631xESB, 632xESB 29 * document number 307013-003, 307014-024: 82801G (ICH7) 30 * document number 322896-001, 322897-001: NM10 31 * document number 313056-003, 313057-017: 82801H (ICH8) 32 * document number 316972-004, 316973-012: 82801I (ICH9) 33 * document number 319973-002, 319974-002: 82801J (ICH10) 34 * document number 322169-001, 322170-003: 5 Series, 3400 Series (PCH) 35 * document number 320066-003, 320257-008: EP80597 (IICH) 36 * document number 324645-001, 324646-001: Cougar Point (CPT) 37 */ 38 39 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 40 41 #include <linux/kernel.h> 42 #include <linux/module.h> 43 #include <linux/errno.h> 44 #include <linux/acpi.h> 45 #include <linux/pci.h> 46 #include <linux/pinctrl/pinctrl.h> 47 #include <linux/mfd/core.h> 48 #include <linux/mfd/lpc_ich.h> 49 #include <linux/platform_data/itco_wdt.h> 50 #include <linux/platform_data/x86/p2sb.h> 51 52 #define ACPIBASE 0x40 53 #define ACPIBASE_GPE_OFF 0x28 54 #define ACPIBASE_GPE_END 0x2f 55 #define ACPIBASE_SMI_OFF 0x30 56 #define ACPIBASE_SMI_END 0x33 57 #define ACPIBASE_PMC_OFF 0x08 58 #define ACPIBASE_PMC_END 0x0c 59 #define ACPIBASE_TCO_OFF 0x60 60 #define ACPIBASE_TCO_END 0x7f 61 #define ACPICTRL_PMCBASE 0x44 62 63 #define ACPIBASE_GCS_OFF 0x3410 64 #define ACPIBASE_GCS_END 0x3414 65 66 #define SPIBASE_BYT 0x54 67 #define SPIBASE_BYT_SZ 512 68 #define SPIBASE_BYT_EN BIT(1) 69 #define BYT_BCR 0xfc 70 #define BYT_BCR_WPD BIT(0) 71 72 #define SPIBASE_LPT 0x3800 73 #define SPIBASE_LPT_SZ 512 74 #define BCR 0xdc 75 #define BCR_WPD BIT(0) 76 77 #define GPIOBASE_ICH0 0x58 78 #define GPIOCTRL_ICH0 0x5C 79 #define GPIOBASE_ICH6 0x48 80 #define GPIOCTRL_ICH6 0x4C 81 82 #define RCBABASE 0xf0 83 84 #define wdt_io_res(i) wdt_res(0, i) 85 #define wdt_mem_res(i) wdt_res(ICH_RES_MEM_OFF, i) 86 #define wdt_res(b, i) (&wdt_ich_res[(b) + (i)]) 87 88 struct lpc_ich_priv { 89 int chipset; 90 91 int abase; /* ACPI base */ 92 int actrl_pbase; /* ACPI control or PMC base */ 93 int gbase; /* GPIO base */ 94 int gctrl; /* GPIO control */ 95 96 int abase_save; /* Cached ACPI base value */ 97 int actrl_pbase_save; /* Cached ACPI control or PMC base value */ 98 int gctrl_save; /* Cached GPIO control value */ 99 }; 100 101 static struct resource wdt_ich_res[] = { 102 /* ACPI - TCO */ 103 { 104 .flags = IORESOURCE_IO, 105 }, 106 /* ACPI - SMI */ 107 { 108 .flags = IORESOURCE_IO, 109 }, 110 /* GCS or PMC */ 111 { 112 .flags = IORESOURCE_MEM, 113 }, 114 }; 115 116 static struct resource gpio_ich_res[] = { 117 /* GPIO */ 118 { 119 .flags = IORESOURCE_IO, 120 }, 121 /* ACPI - GPE0 */ 122 { 123 .flags = IORESOURCE_IO, 124 }, 125 }; 126 127 static struct resource intel_spi_res[] = { 128 { 129 .flags = IORESOURCE_MEM, 130 } 131 }; 132 133 static struct mfd_cell lpc_ich_wdt_cell = { 134 .name = "iTCO_wdt", 135 .num_resources = ARRAY_SIZE(wdt_ich_res), 136 .resources = wdt_ich_res, 137 .ignore_resource_conflicts = true, 138 }; 139 140 static struct mfd_cell lpc_ich_gpio_cell = { 141 .name = "gpio_ich", 142 .num_resources = ARRAY_SIZE(gpio_ich_res), 143 .resources = gpio_ich_res, 144 .ignore_resource_conflicts = true, 145 }; 146 147 #define APL_GPIO_NORTH 0 148 #define APL_GPIO_NORTHWEST 1 149 #define APL_GPIO_WEST 2 150 #define APL_GPIO_SOUTHWEST 3 151 #define APL_GPIO_NR_DEVICES 4 152 153 /* Offset data for Apollo Lake GPIO controllers */ 154 static resource_size_t apl_gpio_offsets[APL_GPIO_NR_DEVICES] = { 155 [APL_GPIO_NORTH] = 0xc50000, 156 [APL_GPIO_NORTHWEST] = 0xc40000, 157 [APL_GPIO_WEST] = 0xc70000, 158 [APL_GPIO_SOUTHWEST] = 0xc00000, 159 }; 160 161 #define APL_GPIO_RESOURCE_SIZE 0x1000 162 163 #define APL_GPIO_IRQ 14 164 165 static struct resource apl_gpio_resources[APL_GPIO_NR_DEVICES][2] = { 166 [APL_GPIO_NORTH] = { 167 DEFINE_RES_MEM(0, 0), 168 DEFINE_RES_IRQ(APL_GPIO_IRQ), 169 }, 170 [APL_GPIO_NORTHWEST] = { 171 DEFINE_RES_MEM(0, 0), 172 DEFINE_RES_IRQ(APL_GPIO_IRQ), 173 }, 174 [APL_GPIO_WEST] = { 175 DEFINE_RES_MEM(0, 0), 176 DEFINE_RES_IRQ(APL_GPIO_IRQ), 177 }, 178 [APL_GPIO_SOUTHWEST] = { 179 DEFINE_RES_MEM(0, 0), 180 DEFINE_RES_IRQ(APL_GPIO_IRQ), 181 }, 182 }; 183 184 static const struct mfd_cell apl_gpio_devices[APL_GPIO_NR_DEVICES] = { 185 [APL_GPIO_NORTH] = { 186 .name = "apollolake-pinctrl", 187 .id = APL_GPIO_NORTH, 188 .num_resources = ARRAY_SIZE(apl_gpio_resources[APL_GPIO_NORTH]), 189 .resources = apl_gpio_resources[APL_GPIO_NORTH], 190 .ignore_resource_conflicts = true, 191 }, 192 [APL_GPIO_NORTHWEST] = { 193 .name = "apollolake-pinctrl", 194 .id = APL_GPIO_NORTHWEST, 195 .num_resources = ARRAY_SIZE(apl_gpio_resources[APL_GPIO_NORTHWEST]), 196 .resources = apl_gpio_resources[APL_GPIO_NORTHWEST], 197 .ignore_resource_conflicts = true, 198 }, 199 [APL_GPIO_WEST] = { 200 .name = "apollolake-pinctrl", 201 .id = APL_GPIO_WEST, 202 .num_resources = ARRAY_SIZE(apl_gpio_resources[APL_GPIO_WEST]), 203 .resources = apl_gpio_resources[APL_GPIO_WEST], 204 .ignore_resource_conflicts = true, 205 }, 206 [APL_GPIO_SOUTHWEST] = { 207 .name = "apollolake-pinctrl", 208 .id = APL_GPIO_SOUTHWEST, 209 .num_resources = ARRAY_SIZE(apl_gpio_resources[APL_GPIO_SOUTHWEST]), 210 .resources = apl_gpio_resources[APL_GPIO_SOUTHWEST], 211 .ignore_resource_conflicts = true, 212 }, 213 }; 214 215 static struct mfd_cell lpc_ich_spi_cell = { 216 .name = "intel-spi", 217 .num_resources = ARRAY_SIZE(intel_spi_res), 218 .resources = intel_spi_res, 219 .ignore_resource_conflicts = true, 220 }; 221 222 /* chipset related info */ 223 enum lpc_chipsets { 224 LPC_ICH = 0, /* ICH */ 225 LPC_ICH0, /* ICH0 */ 226 LPC_ICH2, /* ICH2 */ 227 LPC_ICH2M, /* ICH2-M */ 228 LPC_ICH3, /* ICH3-S */ 229 LPC_ICH3M, /* ICH3-M */ 230 LPC_ICH4, /* ICH4 */ 231 LPC_ICH4M, /* ICH4-M */ 232 LPC_CICH, /* C-ICH */ 233 LPC_ICH5, /* ICH5 & ICH5R */ 234 LPC_6300ESB, /* 6300ESB */ 235 LPC_ICH6, /* ICH6 & ICH6R */ 236 LPC_ICH6M, /* ICH6-M */ 237 LPC_ICH6W, /* ICH6W & ICH6RW */ 238 LPC_631XESB, /* 631xESB/632xESB */ 239 LPC_ICH7, /* ICH7 & ICH7R */ 240 LPC_ICH7DH, /* ICH7DH */ 241 LPC_ICH7M, /* ICH7-M & ICH7-U */ 242 LPC_ICH7MDH, /* ICH7-M DH */ 243 LPC_NM10, /* NM10 */ 244 LPC_ICH8, /* ICH8 & ICH8R */ 245 LPC_ICH8DH, /* ICH8DH */ 246 LPC_ICH8DO, /* ICH8DO */ 247 LPC_ICH8M, /* ICH8M */ 248 LPC_ICH8ME, /* ICH8M-E */ 249 LPC_ICH9, /* ICH9 */ 250 LPC_ICH9R, /* ICH9R */ 251 LPC_ICH9DH, /* ICH9DH */ 252 LPC_ICH9DO, /* ICH9DO */ 253 LPC_ICH9M, /* ICH9M */ 254 LPC_ICH9ME, /* ICH9M-E */ 255 LPC_ICH10, /* ICH10 */ 256 LPC_ICH10R, /* ICH10R */ 257 LPC_ICH10D, /* ICH10D */ 258 LPC_ICH10DO, /* ICH10DO */ 259 LPC_PCH, /* PCH Desktop Full Featured */ 260 LPC_PCHM, /* PCH Mobile Full Featured */ 261 LPC_P55, /* P55 */ 262 LPC_PM55, /* PM55 */ 263 LPC_H55, /* H55 */ 264 LPC_QM57, /* QM57 */ 265 LPC_H57, /* H57 */ 266 LPC_HM55, /* HM55 */ 267 LPC_Q57, /* Q57 */ 268 LPC_HM57, /* HM57 */ 269 LPC_PCHMSFF, /* PCH Mobile SFF Full Featured */ 270 LPC_QS57, /* QS57 */ 271 LPC_3400, /* 3400 */ 272 LPC_3420, /* 3420 */ 273 LPC_3450, /* 3450 */ 274 LPC_EP80579, /* EP80579 */ 275 LPC_CPT, /* Cougar Point */ 276 LPC_CPTD, /* Cougar Point Desktop */ 277 LPC_CPTM, /* Cougar Point Mobile */ 278 LPC_PBG, /* Patsburg */ 279 LPC_DH89XXCC, /* DH89xxCC */ 280 LPC_PPT, /* Panther Point */ 281 LPC_LPT, /* Lynx Point */ 282 LPC_LPT_LP, /* Lynx Point-LP */ 283 LPC_WBG, /* Wellsburg */ 284 LPC_AVN, /* Avoton SoC */ 285 LPC_BAYTRAIL, /* Bay Trail SoC */ 286 LPC_COLETO, /* Coleto Creek */ 287 LPC_WPT_LP, /* Wildcat Point-LP */ 288 LPC_BRASWELL, /* Braswell SoC */ 289 LPC_LEWISBURG, /* Lewisburg */ 290 LPC_9S, /* 9 Series */ 291 LPC_APL, /* Apollo Lake SoC */ 292 LPC_GLK, /* Gemini Lake SoC */ 293 LPC_COUGARMOUNTAIN,/* Cougar Mountain SoC*/ 294 }; 295 296 static struct lpc_ich_info lpc_chipset_info[] = { 297 [LPC_ICH] = { 298 .name = "ICH", 299 .iTCO_version = 1, 300 }, 301 [LPC_ICH0] = { 302 .name = "ICH0", 303 .iTCO_version = 1, 304 }, 305 [LPC_ICH2] = { 306 .name = "ICH2", 307 .iTCO_version = 1, 308 }, 309 [LPC_ICH2M] = { 310 .name = "ICH2-M", 311 .iTCO_version = 1, 312 }, 313 [LPC_ICH3] = { 314 .name = "ICH3-S", 315 .iTCO_version = 1, 316 }, 317 [LPC_ICH3M] = { 318 .name = "ICH3-M", 319 .iTCO_version = 1, 320 }, 321 [LPC_ICH4] = { 322 .name = "ICH4", 323 .iTCO_version = 1, 324 }, 325 [LPC_ICH4M] = { 326 .name = "ICH4-M", 327 .iTCO_version = 1, 328 }, 329 [LPC_CICH] = { 330 .name = "C-ICH", 331 .iTCO_version = 1, 332 }, 333 [LPC_ICH5] = { 334 .name = "ICH5 or ICH5R", 335 .iTCO_version = 1, 336 }, 337 [LPC_6300ESB] = { 338 .name = "6300ESB", 339 .iTCO_version = 1, 340 }, 341 [LPC_ICH6] = { 342 .name = "ICH6 or ICH6R", 343 .iTCO_version = 2, 344 .gpio_version = ICH_V6_GPIO, 345 }, 346 [LPC_ICH6M] = { 347 .name = "ICH6-M", 348 .iTCO_version = 2, 349 .gpio_version = ICH_V6_GPIO, 350 }, 351 [LPC_ICH6W] = { 352 .name = "ICH6W or ICH6RW", 353 .iTCO_version = 2, 354 .gpio_version = ICH_V6_GPIO, 355 }, 356 [LPC_631XESB] = { 357 .name = "631xESB/632xESB", 358 .iTCO_version = 2, 359 .gpio_version = ICH_V6_GPIO, 360 }, 361 [LPC_ICH7] = { 362 .name = "ICH7 or ICH7R", 363 .iTCO_version = 2, 364 .gpio_version = ICH_V7_GPIO, 365 }, 366 [LPC_ICH7DH] = { 367 .name = "ICH7DH", 368 .iTCO_version = 2, 369 .gpio_version = ICH_V7_GPIO, 370 }, 371 [LPC_ICH7M] = { 372 .name = "ICH7-M or ICH7-U", 373 .iTCO_version = 2, 374 .gpio_version = ICH_V7_GPIO, 375 }, 376 [LPC_ICH7MDH] = { 377 .name = "ICH7-M DH", 378 .iTCO_version = 2, 379 .gpio_version = ICH_V7_GPIO, 380 }, 381 [LPC_NM10] = { 382 .name = "NM10", 383 .iTCO_version = 2, 384 .gpio_version = ICH_V7_GPIO, 385 }, 386 [LPC_ICH8] = { 387 .name = "ICH8 or ICH8R", 388 .iTCO_version = 2, 389 .gpio_version = ICH_V7_GPIO, 390 }, 391 [LPC_ICH8DH] = { 392 .name = "ICH8DH", 393 .iTCO_version = 2, 394 .gpio_version = ICH_V7_GPIO, 395 }, 396 [LPC_ICH8DO] = { 397 .name = "ICH8DO", 398 .iTCO_version = 2, 399 .gpio_version = ICH_V7_GPIO, 400 }, 401 [LPC_ICH8M] = { 402 .name = "ICH8M", 403 .iTCO_version = 2, 404 .gpio_version = ICH_V7_GPIO, 405 }, 406 [LPC_ICH8ME] = { 407 .name = "ICH8M-E", 408 .iTCO_version = 2, 409 .gpio_version = ICH_V7_GPIO, 410 }, 411 [LPC_ICH9] = { 412 .name = "ICH9", 413 .iTCO_version = 2, 414 .gpio_version = ICH_V9_GPIO, 415 }, 416 [LPC_ICH9R] = { 417 .name = "ICH9R", 418 .iTCO_version = 2, 419 .gpio_version = ICH_V9_GPIO, 420 }, 421 [LPC_ICH9DH] = { 422 .name = "ICH9DH", 423 .iTCO_version = 2, 424 .gpio_version = ICH_V9_GPIO, 425 }, 426 [LPC_ICH9DO] = { 427 .name = "ICH9DO", 428 .iTCO_version = 2, 429 .gpio_version = ICH_V9_GPIO, 430 }, 431 [LPC_ICH9M] = { 432 .name = "ICH9M", 433 .iTCO_version = 2, 434 .gpio_version = ICH_V9_GPIO, 435 }, 436 [LPC_ICH9ME] = { 437 .name = "ICH9M-E", 438 .iTCO_version = 2, 439 .gpio_version = ICH_V9_GPIO, 440 }, 441 [LPC_ICH10] = { 442 .name = "ICH10", 443 .iTCO_version = 2, 444 .gpio_version = ICH_V10CONS_GPIO, 445 }, 446 [LPC_ICH10R] = { 447 .name = "ICH10R", 448 .iTCO_version = 2, 449 .gpio_version = ICH_V10CONS_GPIO, 450 }, 451 [LPC_ICH10D] = { 452 .name = "ICH10D", 453 .iTCO_version = 2, 454 .gpio_version = ICH_V10CORP_GPIO, 455 }, 456 [LPC_ICH10DO] = { 457 .name = "ICH10DO", 458 .iTCO_version = 2, 459 .gpio_version = ICH_V10CORP_GPIO, 460 }, 461 [LPC_PCH] = { 462 .name = "PCH Desktop Full Featured", 463 .iTCO_version = 2, 464 .gpio_version = ICH_V5_GPIO, 465 }, 466 [LPC_PCHM] = { 467 .name = "PCH Mobile Full Featured", 468 .iTCO_version = 2, 469 .gpio_version = ICH_V5_GPIO, 470 }, 471 [LPC_P55] = { 472 .name = "P55", 473 .iTCO_version = 2, 474 .gpio_version = ICH_V5_GPIO, 475 }, 476 [LPC_PM55] = { 477 .name = "PM55", 478 .iTCO_version = 2, 479 .gpio_version = ICH_V5_GPIO, 480 }, 481 [LPC_H55] = { 482 .name = "H55", 483 .iTCO_version = 2, 484 .gpio_version = ICH_V5_GPIO, 485 }, 486 [LPC_QM57] = { 487 .name = "QM57", 488 .iTCO_version = 2, 489 .gpio_version = ICH_V5_GPIO, 490 }, 491 [LPC_H57] = { 492 .name = "H57", 493 .iTCO_version = 2, 494 .gpio_version = ICH_V5_GPIO, 495 }, 496 [LPC_HM55] = { 497 .name = "HM55", 498 .iTCO_version = 2, 499 .gpio_version = ICH_V5_GPIO, 500 }, 501 [LPC_Q57] = { 502 .name = "Q57", 503 .iTCO_version = 2, 504 .gpio_version = ICH_V5_GPIO, 505 }, 506 [LPC_HM57] = { 507 .name = "HM57", 508 .iTCO_version = 2, 509 .gpio_version = ICH_V5_GPIO, 510 }, 511 [LPC_PCHMSFF] = { 512 .name = "PCH Mobile SFF Full Featured", 513 .iTCO_version = 2, 514 .gpio_version = ICH_V5_GPIO, 515 }, 516 [LPC_QS57] = { 517 .name = "QS57", 518 .iTCO_version = 2, 519 .gpio_version = ICH_V5_GPIO, 520 }, 521 [LPC_3400] = { 522 .name = "3400", 523 .iTCO_version = 2, 524 .gpio_version = ICH_V5_GPIO, 525 }, 526 [LPC_3420] = { 527 .name = "3420", 528 .iTCO_version = 2, 529 .gpio_version = ICH_V5_GPIO, 530 }, 531 [LPC_3450] = { 532 .name = "3450", 533 .iTCO_version = 2, 534 .gpio_version = ICH_V5_GPIO, 535 }, 536 [LPC_EP80579] = { 537 .name = "EP80579", 538 .iTCO_version = 2, 539 }, 540 [LPC_CPT] = { 541 .name = "Cougar Point", 542 .iTCO_version = 2, 543 .gpio_version = ICH_V5_GPIO, 544 }, 545 [LPC_CPTD] = { 546 .name = "Cougar Point Desktop", 547 .iTCO_version = 2, 548 .gpio_version = ICH_V5_GPIO, 549 }, 550 [LPC_CPTM] = { 551 .name = "Cougar Point Mobile", 552 .iTCO_version = 2, 553 .gpio_version = ICH_V5_GPIO, 554 }, 555 [LPC_PBG] = { 556 .name = "Patsburg", 557 .iTCO_version = 2, 558 }, 559 [LPC_DH89XXCC] = { 560 .name = "DH89xxCC", 561 .iTCO_version = 2, 562 .gpio_version = ICH_V5_GPIO, 563 }, 564 [LPC_PPT] = { 565 .name = "Panther Point", 566 .iTCO_version = 2, 567 .gpio_version = ICH_V5_GPIO, 568 }, 569 [LPC_LPT] = { 570 .name = "Lynx Point", 571 .iTCO_version = 2, 572 .gpio_version = ICH_V5_GPIO, 573 .spi_type = INTEL_SPI_LPT, 574 }, 575 [LPC_LPT_LP] = { 576 .name = "Lynx Point_LP", 577 .iTCO_version = 2, 578 .spi_type = INTEL_SPI_LPT, 579 }, 580 [LPC_WBG] = { 581 .name = "Wellsburg", 582 .iTCO_version = 2, 583 }, 584 [LPC_AVN] = { 585 .name = "Avoton SoC", 586 .iTCO_version = 3, 587 .gpio_version = AVOTON_GPIO, 588 .spi_type = INTEL_SPI_BYT, 589 }, 590 [LPC_BAYTRAIL] = { 591 .name = "Bay Trail SoC", 592 .iTCO_version = 3, 593 .spi_type = INTEL_SPI_BYT, 594 }, 595 [LPC_COLETO] = { 596 .name = "Coleto Creek", 597 .iTCO_version = 2, 598 }, 599 [LPC_WPT_LP] = { 600 .name = "Wildcat Point_LP", 601 .iTCO_version = 2, 602 .spi_type = INTEL_SPI_LPT, 603 }, 604 [LPC_BRASWELL] = { 605 .name = "Braswell SoC", 606 .iTCO_version = 3, 607 .spi_type = INTEL_SPI_BYT, 608 }, 609 [LPC_LEWISBURG] = { 610 .name = "Lewisburg", 611 .iTCO_version = 2, 612 }, 613 [LPC_9S] = { 614 .name = "9 Series", 615 .iTCO_version = 2, 616 .gpio_version = ICH_V5_GPIO, 617 }, 618 [LPC_APL] = { 619 .name = "Apollo Lake SoC", 620 .iTCO_version = 5, 621 .spi_type = INTEL_SPI_BXT, 622 }, 623 [LPC_GLK] = { 624 .name = "Gemini Lake SoC", 625 .spi_type = INTEL_SPI_BXT, 626 }, 627 [LPC_COUGARMOUNTAIN] = { 628 .name = "Cougar Mountain SoC", 629 .iTCO_version = 3, 630 }, 631 }; 632 633 /* 634 * This data only exists for exporting the supported PCI ids 635 * via MODULE_DEVICE_TABLE. We do not actually register a 636 * pci_driver, because the I/O Controller Hub has also other 637 * functions that probably will be registered by other drivers. 638 */ 639 static const struct pci_device_id lpc_ich_ids[] = { 640 { PCI_VDEVICE(INTEL, 0x0f1c), LPC_BAYTRAIL}, 641 { PCI_VDEVICE(INTEL, 0x1c41), LPC_CPT}, 642 { PCI_VDEVICE(INTEL, 0x1c42), LPC_CPTD}, 643 { PCI_VDEVICE(INTEL, 0x1c43), LPC_CPTM}, 644 { PCI_VDEVICE(INTEL, 0x1c44), LPC_CPT}, 645 { PCI_VDEVICE(INTEL, 0x1c45), LPC_CPT}, 646 { PCI_VDEVICE(INTEL, 0x1c46), LPC_CPT}, 647 { PCI_VDEVICE(INTEL, 0x1c47), LPC_CPT}, 648 { PCI_VDEVICE(INTEL, 0x1c48), LPC_CPT}, 649 { PCI_VDEVICE(INTEL, 0x1c49), LPC_CPT}, 650 { PCI_VDEVICE(INTEL, 0x1c4a), LPC_CPT}, 651 { PCI_VDEVICE(INTEL, 0x1c4b), LPC_CPT}, 652 { PCI_VDEVICE(INTEL, 0x1c4c), LPC_CPT}, 653 { PCI_VDEVICE(INTEL, 0x1c4d), LPC_CPT}, 654 { PCI_VDEVICE(INTEL, 0x1c4e), LPC_CPT}, 655 { PCI_VDEVICE(INTEL, 0x1c4f), LPC_CPT}, 656 { PCI_VDEVICE(INTEL, 0x1c50), LPC_CPT}, 657 { PCI_VDEVICE(INTEL, 0x1c51), LPC_CPT}, 658 { PCI_VDEVICE(INTEL, 0x1c52), LPC_CPT}, 659 { PCI_VDEVICE(INTEL, 0x1c53), LPC_CPT}, 660 { PCI_VDEVICE(INTEL, 0x1c54), LPC_CPT}, 661 { PCI_VDEVICE(INTEL, 0x1c55), LPC_CPT}, 662 { PCI_VDEVICE(INTEL, 0x1c56), LPC_CPT}, 663 { PCI_VDEVICE(INTEL, 0x1c57), LPC_CPT}, 664 { PCI_VDEVICE(INTEL, 0x1c58), LPC_CPT}, 665 { PCI_VDEVICE(INTEL, 0x1c59), LPC_CPT}, 666 { PCI_VDEVICE(INTEL, 0x1c5a), LPC_CPT}, 667 { PCI_VDEVICE(INTEL, 0x1c5b), LPC_CPT}, 668 { PCI_VDEVICE(INTEL, 0x1c5c), LPC_CPT}, 669 { PCI_VDEVICE(INTEL, 0x1c5d), LPC_CPT}, 670 { PCI_VDEVICE(INTEL, 0x1c5e), LPC_CPT}, 671 { PCI_VDEVICE(INTEL, 0x1c5f), LPC_CPT}, 672 { PCI_VDEVICE(INTEL, 0x1d40), LPC_PBG}, 673 { PCI_VDEVICE(INTEL, 0x1d41), LPC_PBG}, 674 { PCI_VDEVICE(INTEL, 0x1e40), LPC_PPT}, 675 { PCI_VDEVICE(INTEL, 0x1e41), LPC_PPT}, 676 { PCI_VDEVICE(INTEL, 0x1e42), LPC_PPT}, 677 { PCI_VDEVICE(INTEL, 0x1e43), LPC_PPT}, 678 { PCI_VDEVICE(INTEL, 0x1e44), LPC_PPT}, 679 { PCI_VDEVICE(INTEL, 0x1e45), LPC_PPT}, 680 { PCI_VDEVICE(INTEL, 0x1e46), LPC_PPT}, 681 { PCI_VDEVICE(INTEL, 0x1e47), LPC_PPT}, 682 { PCI_VDEVICE(INTEL, 0x1e48), LPC_PPT}, 683 { PCI_VDEVICE(INTEL, 0x1e49), LPC_PPT}, 684 { PCI_VDEVICE(INTEL, 0x1e4a), LPC_PPT}, 685 { PCI_VDEVICE(INTEL, 0x1e4b), LPC_PPT}, 686 { PCI_VDEVICE(INTEL, 0x1e4c), LPC_PPT}, 687 { PCI_VDEVICE(INTEL, 0x1e4d), LPC_PPT}, 688 { PCI_VDEVICE(INTEL, 0x1e4e), LPC_PPT}, 689 { PCI_VDEVICE(INTEL, 0x1e4f), LPC_PPT}, 690 { PCI_VDEVICE(INTEL, 0x1e50), LPC_PPT}, 691 { PCI_VDEVICE(INTEL, 0x1e51), LPC_PPT}, 692 { PCI_VDEVICE(INTEL, 0x1e52), LPC_PPT}, 693 { PCI_VDEVICE(INTEL, 0x1e53), LPC_PPT}, 694 { PCI_VDEVICE(INTEL, 0x1e54), LPC_PPT}, 695 { PCI_VDEVICE(INTEL, 0x1e55), LPC_PPT}, 696 { PCI_VDEVICE(INTEL, 0x1e56), LPC_PPT}, 697 { PCI_VDEVICE(INTEL, 0x1e57), LPC_PPT}, 698 { PCI_VDEVICE(INTEL, 0x1e58), LPC_PPT}, 699 { PCI_VDEVICE(INTEL, 0x1e59), LPC_PPT}, 700 { PCI_VDEVICE(INTEL, 0x1e5a), LPC_PPT}, 701 { PCI_VDEVICE(INTEL, 0x1e5b), LPC_PPT}, 702 { PCI_VDEVICE(INTEL, 0x1e5c), LPC_PPT}, 703 { PCI_VDEVICE(INTEL, 0x1e5d), LPC_PPT}, 704 { PCI_VDEVICE(INTEL, 0x1e5e), LPC_PPT}, 705 { PCI_VDEVICE(INTEL, 0x1e5f), LPC_PPT}, 706 { PCI_VDEVICE(INTEL, 0x1f38), LPC_AVN}, 707 { PCI_VDEVICE(INTEL, 0x1f39), LPC_AVN}, 708 { PCI_VDEVICE(INTEL, 0x1f3a), LPC_AVN}, 709 { PCI_VDEVICE(INTEL, 0x1f3b), LPC_AVN}, 710 { PCI_VDEVICE(INTEL, 0x229c), LPC_BRASWELL}, 711 { PCI_VDEVICE(INTEL, 0x2310), LPC_DH89XXCC}, 712 { PCI_VDEVICE(INTEL, 0x2390), LPC_COLETO}, 713 { PCI_VDEVICE(INTEL, 0x2410), LPC_ICH}, 714 { PCI_VDEVICE(INTEL, 0x2420), LPC_ICH0}, 715 { PCI_VDEVICE(INTEL, 0x2440), LPC_ICH2}, 716 { PCI_VDEVICE(INTEL, 0x244c), LPC_ICH2M}, 717 { PCI_VDEVICE(INTEL, 0x2450), LPC_CICH}, 718 { PCI_VDEVICE(INTEL, 0x2480), LPC_ICH3}, 719 { PCI_VDEVICE(INTEL, 0x248c), LPC_ICH3M}, 720 { PCI_VDEVICE(INTEL, 0x24c0), LPC_ICH4}, 721 { PCI_VDEVICE(INTEL, 0x24cc), LPC_ICH4M}, 722 { PCI_VDEVICE(INTEL, 0x24d0), LPC_ICH5}, 723 { PCI_VDEVICE(INTEL, 0x25a1), LPC_6300ESB}, 724 { PCI_VDEVICE(INTEL, 0x2640), LPC_ICH6}, 725 { PCI_VDEVICE(INTEL, 0x2641), LPC_ICH6M}, 726 { PCI_VDEVICE(INTEL, 0x2642), LPC_ICH6W}, 727 { PCI_VDEVICE(INTEL, 0x2670), LPC_631XESB}, 728 { PCI_VDEVICE(INTEL, 0x2671), LPC_631XESB}, 729 { PCI_VDEVICE(INTEL, 0x2672), LPC_631XESB}, 730 { PCI_VDEVICE(INTEL, 0x2673), LPC_631XESB}, 731 { PCI_VDEVICE(INTEL, 0x2674), LPC_631XESB}, 732 { PCI_VDEVICE(INTEL, 0x2675), LPC_631XESB}, 733 { PCI_VDEVICE(INTEL, 0x2676), LPC_631XESB}, 734 { PCI_VDEVICE(INTEL, 0x2677), LPC_631XESB}, 735 { PCI_VDEVICE(INTEL, 0x2678), LPC_631XESB}, 736 { PCI_VDEVICE(INTEL, 0x2679), LPC_631XESB}, 737 { PCI_VDEVICE(INTEL, 0x267a), LPC_631XESB}, 738 { PCI_VDEVICE(INTEL, 0x267b), LPC_631XESB}, 739 { PCI_VDEVICE(INTEL, 0x267c), LPC_631XESB}, 740 { PCI_VDEVICE(INTEL, 0x267d), LPC_631XESB}, 741 { PCI_VDEVICE(INTEL, 0x267e), LPC_631XESB}, 742 { PCI_VDEVICE(INTEL, 0x267f), LPC_631XESB}, 743 { PCI_VDEVICE(INTEL, 0x27b0), LPC_ICH7DH}, 744 { PCI_VDEVICE(INTEL, 0x27b8), LPC_ICH7}, 745 { PCI_VDEVICE(INTEL, 0x27b9), LPC_ICH7M}, 746 { PCI_VDEVICE(INTEL, 0x27bc), LPC_NM10}, 747 { PCI_VDEVICE(INTEL, 0x27bd), LPC_ICH7MDH}, 748 { PCI_VDEVICE(INTEL, 0x2810), LPC_ICH8}, 749 { PCI_VDEVICE(INTEL, 0x2811), LPC_ICH8ME}, 750 { PCI_VDEVICE(INTEL, 0x2812), LPC_ICH8DH}, 751 { PCI_VDEVICE(INTEL, 0x2814), LPC_ICH8DO}, 752 { PCI_VDEVICE(INTEL, 0x2815), LPC_ICH8M}, 753 { PCI_VDEVICE(INTEL, 0x2912), LPC_ICH9DH}, 754 { PCI_VDEVICE(INTEL, 0x2914), LPC_ICH9DO}, 755 { PCI_VDEVICE(INTEL, 0x2916), LPC_ICH9R}, 756 { PCI_VDEVICE(INTEL, 0x2917), LPC_ICH9ME}, 757 { PCI_VDEVICE(INTEL, 0x2918), LPC_ICH9}, 758 { PCI_VDEVICE(INTEL, 0x2919), LPC_ICH9M}, 759 { PCI_VDEVICE(INTEL, 0x3197), LPC_GLK}, 760 { PCI_VDEVICE(INTEL, 0x2b9c), LPC_COUGARMOUNTAIN}, 761 { PCI_VDEVICE(INTEL, 0x3a14), LPC_ICH10DO}, 762 { PCI_VDEVICE(INTEL, 0x3a16), LPC_ICH10R}, 763 { PCI_VDEVICE(INTEL, 0x3a18), LPC_ICH10}, 764 { PCI_VDEVICE(INTEL, 0x3a1a), LPC_ICH10D}, 765 { PCI_VDEVICE(INTEL, 0x3b00), LPC_PCH}, 766 { PCI_VDEVICE(INTEL, 0x3b01), LPC_PCHM}, 767 { PCI_VDEVICE(INTEL, 0x3b02), LPC_P55}, 768 { PCI_VDEVICE(INTEL, 0x3b03), LPC_PM55}, 769 { PCI_VDEVICE(INTEL, 0x3b06), LPC_H55}, 770 { PCI_VDEVICE(INTEL, 0x3b07), LPC_QM57}, 771 { PCI_VDEVICE(INTEL, 0x3b08), LPC_H57}, 772 { PCI_VDEVICE(INTEL, 0x3b09), LPC_HM55}, 773 { PCI_VDEVICE(INTEL, 0x3b0a), LPC_Q57}, 774 { PCI_VDEVICE(INTEL, 0x3b0b), LPC_HM57}, 775 { PCI_VDEVICE(INTEL, 0x3b0d), LPC_PCHMSFF}, 776 { PCI_VDEVICE(INTEL, 0x3b0f), LPC_QS57}, 777 { PCI_VDEVICE(INTEL, 0x3b12), LPC_3400}, 778 { PCI_VDEVICE(INTEL, 0x3b14), LPC_3420}, 779 { PCI_VDEVICE(INTEL, 0x3b16), LPC_3450}, 780 { PCI_VDEVICE(INTEL, 0x5031), LPC_EP80579}, 781 { PCI_VDEVICE(INTEL, 0x5ae8), LPC_APL}, 782 { PCI_VDEVICE(INTEL, 0x8c40), LPC_LPT}, 783 { PCI_VDEVICE(INTEL, 0x8c41), LPC_LPT}, 784 { PCI_VDEVICE(INTEL, 0x8c42), LPC_LPT}, 785 { PCI_VDEVICE(INTEL, 0x8c43), LPC_LPT}, 786 { PCI_VDEVICE(INTEL, 0x8c44), LPC_LPT}, 787 { PCI_VDEVICE(INTEL, 0x8c45), LPC_LPT}, 788 { PCI_VDEVICE(INTEL, 0x8c46), LPC_LPT}, 789 { PCI_VDEVICE(INTEL, 0x8c47), LPC_LPT}, 790 { PCI_VDEVICE(INTEL, 0x8c48), LPC_LPT}, 791 { PCI_VDEVICE(INTEL, 0x8c49), LPC_LPT}, 792 { PCI_VDEVICE(INTEL, 0x8c4a), LPC_LPT}, 793 { PCI_VDEVICE(INTEL, 0x8c4b), LPC_LPT}, 794 { PCI_VDEVICE(INTEL, 0x8c4c), LPC_LPT}, 795 { PCI_VDEVICE(INTEL, 0x8c4d), LPC_LPT}, 796 { PCI_VDEVICE(INTEL, 0x8c4e), LPC_LPT}, 797 { PCI_VDEVICE(INTEL, 0x8c4f), LPC_LPT}, 798 { PCI_VDEVICE(INTEL, 0x8c50), LPC_LPT}, 799 { PCI_VDEVICE(INTEL, 0x8c51), LPC_LPT}, 800 { PCI_VDEVICE(INTEL, 0x8c52), LPC_LPT}, 801 { PCI_VDEVICE(INTEL, 0x8c53), LPC_LPT}, 802 { PCI_VDEVICE(INTEL, 0x8c54), LPC_LPT}, 803 { PCI_VDEVICE(INTEL, 0x8c55), LPC_LPT}, 804 { PCI_VDEVICE(INTEL, 0x8c56), LPC_LPT}, 805 { PCI_VDEVICE(INTEL, 0x8c57), LPC_LPT}, 806 { PCI_VDEVICE(INTEL, 0x8c58), LPC_LPT}, 807 { PCI_VDEVICE(INTEL, 0x8c59), LPC_LPT}, 808 { PCI_VDEVICE(INTEL, 0x8c5a), LPC_LPT}, 809 { PCI_VDEVICE(INTEL, 0x8c5b), LPC_LPT}, 810 { PCI_VDEVICE(INTEL, 0x8c5c), LPC_LPT}, 811 { PCI_VDEVICE(INTEL, 0x8c5d), LPC_LPT}, 812 { PCI_VDEVICE(INTEL, 0x8c5e), LPC_LPT}, 813 { PCI_VDEVICE(INTEL, 0x8c5f), LPC_LPT}, 814 { PCI_VDEVICE(INTEL, 0x8cc1), LPC_9S}, 815 { PCI_VDEVICE(INTEL, 0x8cc2), LPC_9S}, 816 { PCI_VDEVICE(INTEL, 0x8cc3), LPC_9S}, 817 { PCI_VDEVICE(INTEL, 0x8cc4), LPC_9S}, 818 { PCI_VDEVICE(INTEL, 0x8cc6), LPC_9S}, 819 { PCI_VDEVICE(INTEL, 0x8d40), LPC_WBG}, 820 { PCI_VDEVICE(INTEL, 0x8d41), LPC_WBG}, 821 { PCI_VDEVICE(INTEL, 0x8d42), LPC_WBG}, 822 { PCI_VDEVICE(INTEL, 0x8d43), LPC_WBG}, 823 { PCI_VDEVICE(INTEL, 0x8d44), LPC_WBG}, 824 { PCI_VDEVICE(INTEL, 0x8d45), LPC_WBG}, 825 { PCI_VDEVICE(INTEL, 0x8d46), LPC_WBG}, 826 { PCI_VDEVICE(INTEL, 0x8d47), LPC_WBG}, 827 { PCI_VDEVICE(INTEL, 0x8d48), LPC_WBG}, 828 { PCI_VDEVICE(INTEL, 0x8d49), LPC_WBG}, 829 { PCI_VDEVICE(INTEL, 0x8d4a), LPC_WBG}, 830 { PCI_VDEVICE(INTEL, 0x8d4b), LPC_WBG}, 831 { PCI_VDEVICE(INTEL, 0x8d4c), LPC_WBG}, 832 { PCI_VDEVICE(INTEL, 0x8d4d), LPC_WBG}, 833 { PCI_VDEVICE(INTEL, 0x8d4e), LPC_WBG}, 834 { PCI_VDEVICE(INTEL, 0x8d4f), LPC_WBG}, 835 { PCI_VDEVICE(INTEL, 0x8d50), LPC_WBG}, 836 { PCI_VDEVICE(INTEL, 0x8d51), LPC_WBG}, 837 { PCI_VDEVICE(INTEL, 0x8d52), LPC_WBG}, 838 { PCI_VDEVICE(INTEL, 0x8d53), LPC_WBG}, 839 { PCI_VDEVICE(INTEL, 0x8d54), LPC_WBG}, 840 { PCI_VDEVICE(INTEL, 0x8d55), LPC_WBG}, 841 { PCI_VDEVICE(INTEL, 0x8d56), LPC_WBG}, 842 { PCI_VDEVICE(INTEL, 0x8d57), LPC_WBG}, 843 { PCI_VDEVICE(INTEL, 0x8d58), LPC_WBG}, 844 { PCI_VDEVICE(INTEL, 0x8d59), LPC_WBG}, 845 { PCI_VDEVICE(INTEL, 0x8d5a), LPC_WBG}, 846 { PCI_VDEVICE(INTEL, 0x8d5b), LPC_WBG}, 847 { PCI_VDEVICE(INTEL, 0x8d5c), LPC_WBG}, 848 { PCI_VDEVICE(INTEL, 0x8d5d), LPC_WBG}, 849 { PCI_VDEVICE(INTEL, 0x8d5e), LPC_WBG}, 850 { PCI_VDEVICE(INTEL, 0x8d5f), LPC_WBG}, 851 { PCI_VDEVICE(INTEL, 0x9c40), LPC_LPT_LP}, 852 { PCI_VDEVICE(INTEL, 0x9c41), LPC_LPT_LP}, 853 { PCI_VDEVICE(INTEL, 0x9c42), LPC_LPT_LP}, 854 { PCI_VDEVICE(INTEL, 0x9c43), LPC_LPT_LP}, 855 { PCI_VDEVICE(INTEL, 0x9c44), LPC_LPT_LP}, 856 { PCI_VDEVICE(INTEL, 0x9c45), LPC_LPT_LP}, 857 { PCI_VDEVICE(INTEL, 0x9c46), LPC_LPT_LP}, 858 { PCI_VDEVICE(INTEL, 0x9c47), LPC_LPT_LP}, 859 { PCI_VDEVICE(INTEL, 0x9cc1), LPC_WPT_LP}, 860 { PCI_VDEVICE(INTEL, 0x9cc2), LPC_WPT_LP}, 861 { PCI_VDEVICE(INTEL, 0x9cc3), LPC_WPT_LP}, 862 { PCI_VDEVICE(INTEL, 0x9cc5), LPC_WPT_LP}, 863 { PCI_VDEVICE(INTEL, 0x9cc6), LPC_WPT_LP}, 864 { PCI_VDEVICE(INTEL, 0x9cc7), LPC_WPT_LP}, 865 { PCI_VDEVICE(INTEL, 0x9cc9), LPC_WPT_LP}, 866 { PCI_VDEVICE(INTEL, 0xa1c1), LPC_LEWISBURG}, 867 { PCI_VDEVICE(INTEL, 0xa1c2), LPC_LEWISBURG}, 868 { PCI_VDEVICE(INTEL, 0xa1c3), LPC_LEWISBURG}, 869 { PCI_VDEVICE(INTEL, 0xa1c4), LPC_LEWISBURG}, 870 { PCI_VDEVICE(INTEL, 0xa1c5), LPC_LEWISBURG}, 871 { PCI_VDEVICE(INTEL, 0xa1c6), LPC_LEWISBURG}, 872 { PCI_VDEVICE(INTEL, 0xa1c7), LPC_LEWISBURG}, 873 { PCI_VDEVICE(INTEL, 0xa242), LPC_LEWISBURG}, 874 { PCI_VDEVICE(INTEL, 0xa243), LPC_LEWISBURG}, 875 { 0, }, /* End of list */ 876 }; 877 MODULE_DEVICE_TABLE(pci, lpc_ich_ids); 878 879 static void lpc_ich_restore_config_space(struct pci_dev *dev) 880 { 881 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 882 883 if (priv->abase_save >= 0) { 884 pci_write_config_byte(dev, priv->abase, priv->abase_save); 885 priv->abase_save = -1; 886 } 887 888 if (priv->actrl_pbase_save >= 0) { 889 pci_write_config_byte(dev, priv->actrl_pbase, 890 priv->actrl_pbase_save); 891 priv->actrl_pbase_save = -1; 892 } 893 894 if (priv->gctrl_save >= 0) { 895 pci_write_config_byte(dev, priv->gctrl, priv->gctrl_save); 896 priv->gctrl_save = -1; 897 } 898 } 899 900 static void lpc_ich_enable_acpi_space(struct pci_dev *dev) 901 { 902 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 903 u8 reg_save; 904 905 switch (lpc_chipset_info[priv->chipset].iTCO_version) { 906 case 3: 907 /* 908 * Some chipsets (eg Avoton) enable the ACPI space in the 909 * ACPI BASE register. 910 */ 911 pci_read_config_byte(dev, priv->abase, ®_save); 912 pci_write_config_byte(dev, priv->abase, reg_save | 0x2); 913 priv->abase_save = reg_save; 914 break; 915 default: 916 /* 917 * Most chipsets enable the ACPI space in the ACPI control 918 * register. 919 */ 920 pci_read_config_byte(dev, priv->actrl_pbase, ®_save); 921 pci_write_config_byte(dev, priv->actrl_pbase, reg_save | 0x80); 922 priv->actrl_pbase_save = reg_save; 923 break; 924 } 925 } 926 927 static void lpc_ich_enable_gpio_space(struct pci_dev *dev) 928 { 929 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 930 u8 reg_save; 931 932 pci_read_config_byte(dev, priv->gctrl, ®_save); 933 pci_write_config_byte(dev, priv->gctrl, reg_save | 0x10); 934 priv->gctrl_save = reg_save; 935 } 936 937 static void lpc_ich_enable_pmc_space(struct pci_dev *dev) 938 { 939 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 940 u8 reg_save; 941 942 pci_read_config_byte(dev, priv->actrl_pbase, ®_save); 943 pci_write_config_byte(dev, priv->actrl_pbase, reg_save | 0x2); 944 945 priv->actrl_pbase_save = reg_save; 946 } 947 948 static int lpc_ich_finalize_wdt_cell(struct pci_dev *dev) 949 { 950 struct itco_wdt_platform_data *pdata; 951 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 952 struct lpc_ich_info *info; 953 struct mfd_cell *cell = &lpc_ich_wdt_cell; 954 955 pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL); 956 if (!pdata) 957 return -ENOMEM; 958 959 info = &lpc_chipset_info[priv->chipset]; 960 961 pdata->version = info->iTCO_version; 962 strlcpy(pdata->name, info->name, sizeof(pdata->name)); 963 964 cell->platform_data = pdata; 965 cell->pdata_size = sizeof(*pdata); 966 return 0; 967 } 968 969 static void lpc_ich_finalize_gpio_cell(struct pci_dev *dev) 970 { 971 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 972 struct mfd_cell *cell = &lpc_ich_gpio_cell; 973 974 cell->platform_data = &lpc_chipset_info[priv->chipset]; 975 cell->pdata_size = sizeof(struct lpc_ich_info); 976 } 977 978 /* 979 * We don't check for resource conflict globally. There are 2 or 3 independent 980 * GPIO groups and it's enough to have access to one of these to instantiate 981 * the device. 982 */ 983 static int lpc_ich_check_conflict_gpio(struct resource *res) 984 { 985 int ret; 986 u8 use_gpio = 0; 987 988 if (resource_size(res) >= 0x50 && 989 !acpi_check_region(res->start + 0x40, 0x10, "LPC ICH GPIO3")) 990 use_gpio |= 1 << 2; 991 992 if (!acpi_check_region(res->start + 0x30, 0x10, "LPC ICH GPIO2")) 993 use_gpio |= 1 << 1; 994 995 ret = acpi_check_region(res->start + 0x00, 0x30, "LPC ICH GPIO1"); 996 if (!ret) 997 use_gpio |= 1 << 0; 998 999 return use_gpio ? use_gpio : ret; 1000 } 1001 1002 static int lpc_ich_init_gpio(struct pci_dev *dev) 1003 { 1004 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 1005 u32 base_addr_cfg; 1006 u32 base_addr; 1007 int ret; 1008 bool acpi_conflict = false; 1009 struct resource *res; 1010 1011 /* Setup power management base register */ 1012 pci_read_config_dword(dev, priv->abase, &base_addr_cfg); 1013 base_addr = base_addr_cfg & 0x0000ff80; 1014 if (!base_addr) { 1015 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n"); 1016 lpc_ich_gpio_cell.num_resources--; 1017 goto gpe0_done; 1018 } 1019 1020 res = &gpio_ich_res[ICH_RES_GPE0]; 1021 res->start = base_addr + ACPIBASE_GPE_OFF; 1022 res->end = base_addr + ACPIBASE_GPE_END; 1023 ret = acpi_check_resource_conflict(res); 1024 if (ret) { 1025 /* 1026 * This isn't fatal for the GPIO, but we have to make sure that 1027 * the platform_device subsystem doesn't see this resource 1028 * or it will register an invalid region. 1029 */ 1030 lpc_ich_gpio_cell.num_resources--; 1031 acpi_conflict = true; 1032 } else { 1033 lpc_ich_enable_acpi_space(dev); 1034 } 1035 1036 gpe0_done: 1037 /* Setup GPIO base register */ 1038 pci_read_config_dword(dev, priv->gbase, &base_addr_cfg); 1039 base_addr = base_addr_cfg & 0x0000ff80; 1040 if (!base_addr) { 1041 dev_notice(&dev->dev, "I/O space for GPIO uninitialized\n"); 1042 ret = -ENODEV; 1043 goto gpio_done; 1044 } 1045 1046 /* Older devices provide fewer GPIO and have a smaller resource size. */ 1047 res = &gpio_ich_res[ICH_RES_GPIO]; 1048 res->start = base_addr; 1049 switch (lpc_chipset_info[priv->chipset].gpio_version) { 1050 case ICH_V5_GPIO: 1051 case ICH_V10CORP_GPIO: 1052 res->end = res->start + 128 - 1; 1053 break; 1054 default: 1055 res->end = res->start + 64 - 1; 1056 break; 1057 } 1058 1059 ret = lpc_ich_check_conflict_gpio(res); 1060 if (ret < 0) { 1061 /* this isn't necessarily fatal for the GPIO */ 1062 acpi_conflict = true; 1063 goto gpio_done; 1064 } 1065 lpc_chipset_info[priv->chipset].use_gpio = ret; 1066 lpc_ich_enable_gpio_space(dev); 1067 1068 lpc_ich_finalize_gpio_cell(dev); 1069 ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO, 1070 &lpc_ich_gpio_cell, 1, NULL, 0, NULL); 1071 1072 gpio_done: 1073 if (acpi_conflict) 1074 pr_warn("Resource conflict(s) found affecting %s\n", 1075 lpc_ich_gpio_cell.name); 1076 return ret; 1077 } 1078 1079 static int lpc_ich_init_wdt(struct pci_dev *dev) 1080 { 1081 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 1082 u32 base_addr_cfg; 1083 u32 base_addr; 1084 int ret; 1085 struct resource *res; 1086 1087 /* If we have ACPI based watchdog use that instead */ 1088 if (acpi_has_watchdog()) 1089 return -ENODEV; 1090 1091 /* Setup power management base register */ 1092 pci_read_config_dword(dev, priv->abase, &base_addr_cfg); 1093 base_addr = base_addr_cfg & 0x0000ff80; 1094 if (!base_addr) { 1095 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n"); 1096 ret = -ENODEV; 1097 goto wdt_done; 1098 } 1099 1100 res = wdt_io_res(ICH_RES_IO_TCO); 1101 res->start = base_addr + ACPIBASE_TCO_OFF; 1102 res->end = base_addr + ACPIBASE_TCO_END; 1103 1104 res = wdt_io_res(ICH_RES_IO_SMI); 1105 res->start = base_addr + ACPIBASE_SMI_OFF; 1106 res->end = base_addr + ACPIBASE_SMI_END; 1107 1108 lpc_ich_enable_acpi_space(dev); 1109 1110 /* 1111 * iTCO v2: 1112 * Get the Memory-Mapped GCS register. To get access to it 1113 * we have to read RCBA from PCI Config space 0xf0 and use 1114 * it as base. GCS = RCBA + ICH6_GCS(0x3410). 1115 * 1116 * iTCO v3: 1117 * Get the Power Management Configuration register. To get access 1118 * to it we have to read the PMC BASE from config space and address 1119 * the register at offset 0x8. 1120 */ 1121 if (lpc_chipset_info[priv->chipset].iTCO_version == 1) { 1122 /* Don't register iomem for TCO ver 1 */ 1123 lpc_ich_wdt_cell.num_resources--; 1124 } else if (lpc_chipset_info[priv->chipset].iTCO_version == 2) { 1125 pci_read_config_dword(dev, RCBABASE, &base_addr_cfg); 1126 base_addr = base_addr_cfg & 0xffffc000; 1127 if (!(base_addr_cfg & 1)) { 1128 dev_notice(&dev->dev, "RCBA is disabled by " 1129 "hardware/BIOS, device disabled\n"); 1130 ret = -ENODEV; 1131 goto wdt_done; 1132 } 1133 res = wdt_mem_res(ICH_RES_MEM_GCS_PMC); 1134 res->start = base_addr + ACPIBASE_GCS_OFF; 1135 res->end = base_addr + ACPIBASE_GCS_END; 1136 } else if (lpc_chipset_info[priv->chipset].iTCO_version == 3) { 1137 lpc_ich_enable_pmc_space(dev); 1138 pci_read_config_dword(dev, ACPICTRL_PMCBASE, &base_addr_cfg); 1139 base_addr = base_addr_cfg & 0xfffffe00; 1140 1141 res = wdt_mem_res(ICH_RES_MEM_GCS_PMC); 1142 res->start = base_addr + ACPIBASE_PMC_OFF; 1143 res->end = base_addr + ACPIBASE_PMC_END; 1144 } 1145 1146 ret = lpc_ich_finalize_wdt_cell(dev); 1147 if (ret) 1148 goto wdt_done; 1149 1150 ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO, 1151 &lpc_ich_wdt_cell, 1, NULL, 0, NULL); 1152 1153 wdt_done: 1154 return ret; 1155 } 1156 1157 static int lpc_ich_init_pinctrl(struct pci_dev *dev) 1158 { 1159 struct resource base; 1160 unsigned int i; 1161 int ret; 1162 1163 /* Check, if GPIO has been exported as an ACPI device */ 1164 if (acpi_dev_present("INT3452", NULL, -1)) 1165 return -EEXIST; 1166 1167 ret = p2sb_bar(dev->bus, 0, &base); 1168 if (ret) 1169 return ret; 1170 1171 for (i = 0; i < ARRAY_SIZE(apl_gpio_devices); i++) { 1172 struct resource *mem = &apl_gpio_resources[i][0]; 1173 resource_size_t offset = apl_gpio_offsets[i]; 1174 1175 /* Fill MEM resource */ 1176 mem->start = base.start + offset; 1177 mem->end = base.start + offset + APL_GPIO_RESOURCE_SIZE - 1; 1178 mem->flags = base.flags; 1179 } 1180 1181 return mfd_add_devices(&dev->dev, 0, apl_gpio_devices, 1182 ARRAY_SIZE(apl_gpio_devices), NULL, 0, NULL); 1183 } 1184 1185 static bool lpc_ich_byt_set_writeable(void __iomem *base, void *data) 1186 { 1187 u32 val; 1188 1189 val = readl(base + BYT_BCR); 1190 if (!(val & BYT_BCR_WPD)) { 1191 val |= BYT_BCR_WPD; 1192 writel(val, base + BYT_BCR); 1193 val = readl(base + BYT_BCR); 1194 } 1195 1196 return val & BYT_BCR_WPD; 1197 } 1198 1199 static bool lpc_ich_set_writeable(struct pci_bus *bus, unsigned int devfn) 1200 { 1201 u32 bcr; 1202 1203 pci_bus_read_config_dword(bus, devfn, BCR, &bcr); 1204 if (!(bcr & BCR_WPD)) { 1205 bcr |= BCR_WPD; 1206 pci_bus_write_config_dword(bus, devfn, BCR, bcr); 1207 pci_bus_read_config_dword(bus, devfn, BCR, &bcr); 1208 } 1209 1210 return bcr & BCR_WPD; 1211 } 1212 1213 static bool lpc_ich_lpt_set_writeable(void __iomem *base, void *data) 1214 { 1215 struct pci_dev *pdev = data; 1216 1217 return lpc_ich_set_writeable(pdev->bus, pdev->devfn); 1218 } 1219 1220 static bool lpc_ich_bxt_set_writeable(void __iomem *base, void *data) 1221 { 1222 struct pci_dev *pdev = data; 1223 1224 return lpc_ich_set_writeable(pdev->bus, PCI_DEVFN(13, 2)); 1225 } 1226 1227 static int lpc_ich_init_spi(struct pci_dev *dev) 1228 { 1229 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 1230 struct resource *res = &intel_spi_res[0]; 1231 struct intel_spi_boardinfo *info; 1232 u32 spi_base, rcba; 1233 int ret; 1234 1235 info = devm_kzalloc(&dev->dev, sizeof(*info), GFP_KERNEL); 1236 if (!info) 1237 return -ENOMEM; 1238 1239 info->type = lpc_chipset_info[priv->chipset].spi_type; 1240 1241 switch (info->type) { 1242 case INTEL_SPI_BYT: 1243 pci_read_config_dword(dev, SPIBASE_BYT, &spi_base); 1244 if (spi_base & SPIBASE_BYT_EN) { 1245 res->start = spi_base & ~(SPIBASE_BYT_SZ - 1); 1246 res->end = res->start + SPIBASE_BYT_SZ - 1; 1247 1248 info->set_writeable = lpc_ich_byt_set_writeable; 1249 } 1250 break; 1251 1252 case INTEL_SPI_LPT: 1253 pci_read_config_dword(dev, RCBABASE, &rcba); 1254 if (rcba & 1) { 1255 spi_base = round_down(rcba, SPIBASE_LPT_SZ); 1256 res->start = spi_base + SPIBASE_LPT; 1257 res->end = res->start + SPIBASE_LPT_SZ - 1; 1258 1259 info->set_writeable = lpc_ich_lpt_set_writeable; 1260 info->data = dev; 1261 } 1262 break; 1263 1264 case INTEL_SPI_BXT: 1265 /* 1266 * The P2SB is hidden by BIOS and we need to unhide it in 1267 * order to read BAR of the SPI flash device. Once that is 1268 * done we hide it again. 1269 */ 1270 ret = p2sb_bar(dev->bus, PCI_DEVFN(13, 2), res); 1271 if (ret) 1272 return ret; 1273 1274 info->set_writeable = lpc_ich_bxt_set_writeable; 1275 info->data = dev; 1276 break; 1277 1278 default: 1279 return -EINVAL; 1280 } 1281 1282 if (!res->start) 1283 return -ENODEV; 1284 1285 lpc_ich_spi_cell.platform_data = info; 1286 lpc_ich_spi_cell.pdata_size = sizeof(*info); 1287 1288 return mfd_add_devices(&dev->dev, PLATFORM_DEVID_NONE, 1289 &lpc_ich_spi_cell, 1, NULL, 0, NULL); 1290 } 1291 1292 static int lpc_ich_probe(struct pci_dev *dev, 1293 const struct pci_device_id *id) 1294 { 1295 struct lpc_ich_priv *priv; 1296 int ret; 1297 bool cell_added = false; 1298 1299 priv = devm_kzalloc(&dev->dev, 1300 sizeof(struct lpc_ich_priv), GFP_KERNEL); 1301 if (!priv) 1302 return -ENOMEM; 1303 1304 priv->chipset = id->driver_data; 1305 1306 priv->actrl_pbase_save = -1; 1307 priv->abase_save = -1; 1308 1309 priv->abase = ACPIBASE; 1310 priv->actrl_pbase = ACPICTRL_PMCBASE; 1311 1312 priv->gctrl_save = -1; 1313 if (priv->chipset <= LPC_ICH5) { 1314 priv->gbase = GPIOBASE_ICH0; 1315 priv->gctrl = GPIOCTRL_ICH0; 1316 } else { 1317 priv->gbase = GPIOBASE_ICH6; 1318 priv->gctrl = GPIOCTRL_ICH6; 1319 } 1320 1321 pci_set_drvdata(dev, priv); 1322 1323 if (lpc_chipset_info[priv->chipset].iTCO_version) { 1324 ret = lpc_ich_init_wdt(dev); 1325 if (!ret) 1326 cell_added = true; 1327 } 1328 1329 if (lpc_chipset_info[priv->chipset].gpio_version) { 1330 ret = lpc_ich_init_gpio(dev); 1331 if (!ret) 1332 cell_added = true; 1333 } 1334 1335 if (priv->chipset == LPC_APL) { 1336 ret = lpc_ich_init_pinctrl(dev); 1337 if (!ret) 1338 cell_added = true; 1339 } 1340 1341 if (lpc_chipset_info[priv->chipset].spi_type) { 1342 ret = lpc_ich_init_spi(dev); 1343 if (!ret) 1344 cell_added = true; 1345 } 1346 1347 /* 1348 * We only care if at least one or none of the cells registered 1349 * successfully. 1350 */ 1351 if (!cell_added) { 1352 dev_warn(&dev->dev, "No MFD cells added\n"); 1353 lpc_ich_restore_config_space(dev); 1354 return -ENODEV; 1355 } 1356 1357 return 0; 1358 } 1359 1360 static void lpc_ich_remove(struct pci_dev *dev) 1361 { 1362 mfd_remove_devices(&dev->dev); 1363 lpc_ich_restore_config_space(dev); 1364 } 1365 1366 static struct pci_driver lpc_ich_driver = { 1367 .name = "lpc_ich", 1368 .id_table = lpc_ich_ids, 1369 .probe = lpc_ich_probe, 1370 .remove = lpc_ich_remove, 1371 }; 1372 1373 module_pci_driver(lpc_ich_driver); 1374 1375 MODULE_AUTHOR("Aaron Sierra <asierra@xes-inc.com>"); 1376 MODULE_DESCRIPTION("LPC interface for Intel ICH"); 1377 MODULE_LICENSE("GPL"); 1378