drivers/mfd/lpc_ich.c

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