linux/drivers/mfd/lpc_ich.c
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   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 *  You should have received a copy of the GNU General Public License
  24 *  along with this program; see the file COPYING.  If not, write to
  25 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  26 *
  27 *  This driver supports the following I/O Controller hubs:
  28 *      (See the intel documentation on http://developer.intel.com.)
  29 *      document number 290655-003, 290677-014: 82801AA (ICH), 82801AB (ICHO)
  30 *      document number 290687-002, 298242-027: 82801BA (ICH2)
  31 *      document number 290733-003, 290739-013: 82801CA (ICH3-S)
  32 *      document number 290716-001, 290718-007: 82801CAM (ICH3-M)
  33 *      document number 290744-001, 290745-025: 82801DB (ICH4)
  34 *      document number 252337-001, 252663-008: 82801DBM (ICH4-M)
  35 *      document number 273599-001, 273645-002: 82801E (C-ICH)
  36 *      document number 252516-001, 252517-028: 82801EB (ICH5), 82801ER (ICH5R)
  37 *      document number 300641-004, 300884-013: 6300ESB
  38 *      document number 301473-002, 301474-026: 82801F (ICH6)
  39 *      document number 313082-001, 313075-006: 631xESB, 632xESB
  40 *      document number 307013-003, 307014-024: 82801G (ICH7)
  41 *      document number 322896-001, 322897-001: NM10
  42 *      document number 313056-003, 313057-017: 82801H (ICH8)
  43 *      document number 316972-004, 316973-012: 82801I (ICH9)
  44 *      document number 319973-002, 319974-002: 82801J (ICH10)
  45 *      document number 322169-001, 322170-003: 5 Series, 3400 Series (PCH)
  46 *      document number 320066-003, 320257-008: EP80597 (IICH)
  47 *      document number 324645-001, 324646-001: Cougar Point (CPT)
  48 *      document number TBD : Patsburg (PBG)
  49 *      document number TBD : DH89xxCC
  50 *      document number TBD : Panther Point
  51 *      document number TBD : Lynx Point
  52 *      document number TBD : Lynx Point-LP
  53 *      document number TBD : Wellsburg
  54 */
  55
  56#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  57
  58#include <linux/init.h>
  59#include <linux/kernel.h>
  60#include <linux/module.h>
  61#include <linux/errno.h>
  62#include <linux/acpi.h>
  63#include <linux/pci.h>
  64#include <linux/mfd/core.h>
  65#include <linux/mfd/lpc_ich.h>
  66
  67#define ACPIBASE                0x40
  68#define ACPIBASE_GPE_OFF        0x28
  69#define ACPIBASE_GPE_END        0x2f
  70#define ACPIBASE_SMI_OFF        0x30
  71#define ACPIBASE_SMI_END        0x33
  72#define ACPIBASE_TCO_OFF        0x60
  73#define ACPIBASE_TCO_END        0x7f
  74#define ACPICTRL                0x44
  75
  76#define ACPIBASE_GCS_OFF        0x3410
  77#define ACPIBASE_GCS_END        0x3414
  78
  79#define GPIOBASE_ICH0           0x58
  80#define GPIOCTRL_ICH0           0x5C
  81#define GPIOBASE_ICH6           0x48
  82#define GPIOCTRL_ICH6           0x4C
  83
  84#define RCBABASE                0xf0
  85
  86#define wdt_io_res(i) wdt_res(0, i)
  87#define wdt_mem_res(i) wdt_res(ICH_RES_MEM_OFF, i)
  88#define wdt_res(b, i) (&wdt_ich_res[(b) + (i)])
  89
  90struct lpc_ich_cfg {
  91        int base;
  92        int ctrl;
  93        int save;
  94};
  95
  96struct lpc_ich_priv {
  97        int chipset;
  98        struct lpc_ich_cfg acpi;
  99        struct lpc_ich_cfg gpio;
 100};
 101
 102static struct resource wdt_ich_res[] = {
 103        /* ACPI - TCO */
 104        {
 105                .flags = IORESOURCE_IO,
 106        },
 107        /* ACPI - SMI */
 108        {
 109                .flags = IORESOURCE_IO,
 110        },
 111        /* GCS */
 112        {
 113                .flags = IORESOURCE_MEM,
 114        },
 115};
 116
 117static struct resource gpio_ich_res[] = {
 118        /* GPIO */
 119        {
 120                .flags = IORESOURCE_IO,
 121        },
 122        /* ACPI - GPE0 */
 123        {
 124                .flags = IORESOURCE_IO,
 125        },
 126};
 127
 128enum lpc_cells {
 129        LPC_WDT = 0,
 130        LPC_GPIO,
 131};
 132
 133static struct mfd_cell lpc_ich_cells[] = {
 134        [LPC_WDT] = {
 135                .name = "iTCO_wdt",
 136                .num_resources = ARRAY_SIZE(wdt_ich_res),
 137                .resources = wdt_ich_res,
 138                .ignore_resource_conflicts = true,
 139        },
 140        [LPC_GPIO] = {
 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
 148/* chipset related info */
 149enum lpc_chipsets {
 150        LPC_ICH = 0,    /* ICH */
 151        LPC_ICH0,       /* ICH0 */
 152        LPC_ICH2,       /* ICH2 */
 153        LPC_ICH2M,      /* ICH2-M */
 154        LPC_ICH3,       /* ICH3-S */
 155        LPC_ICH3M,      /* ICH3-M */
 156        LPC_ICH4,       /* ICH4 */
 157        LPC_ICH4M,      /* ICH4-M */
 158        LPC_CICH,       /* C-ICH */
 159        LPC_ICH5,       /* ICH5 & ICH5R */
 160        LPC_6300ESB,    /* 6300ESB */
 161        LPC_ICH6,       /* ICH6 & ICH6R */
 162        LPC_ICH6M,      /* ICH6-M */
 163        LPC_ICH6W,      /* ICH6W & ICH6RW */
 164        LPC_631XESB,    /* 631xESB/632xESB */
 165        LPC_ICH7,       /* ICH7 & ICH7R */
 166        LPC_ICH7DH,     /* ICH7DH */
 167        LPC_ICH7M,      /* ICH7-M & ICH7-U */
 168        LPC_ICH7MDH,    /* ICH7-M DH */
 169        LPC_NM10,       /* NM10 */
 170        LPC_ICH8,       /* ICH8 & ICH8R */
 171        LPC_ICH8DH,     /* ICH8DH */
 172        LPC_ICH8DO,     /* ICH8DO */
 173        LPC_ICH8M,      /* ICH8M */
 174        LPC_ICH8ME,     /* ICH8M-E */
 175        LPC_ICH9,       /* ICH9 */
 176        LPC_ICH9R,      /* ICH9R */
 177        LPC_ICH9DH,     /* ICH9DH */
 178        LPC_ICH9DO,     /* ICH9DO */
 179        LPC_ICH9M,      /* ICH9M */
 180        LPC_ICH9ME,     /* ICH9M-E */
 181        LPC_ICH10,      /* ICH10 */
 182        LPC_ICH10R,     /* ICH10R */
 183        LPC_ICH10D,     /* ICH10D */
 184        LPC_ICH10DO,    /* ICH10DO */
 185        LPC_PCH,        /* PCH Desktop Full Featured */
 186        LPC_PCHM,       /* PCH Mobile Full Featured */
 187        LPC_P55,        /* P55 */
 188        LPC_PM55,       /* PM55 */
 189        LPC_H55,        /* H55 */
 190        LPC_QM57,       /* QM57 */
 191        LPC_H57,        /* H57 */
 192        LPC_HM55,       /* HM55 */
 193        LPC_Q57,        /* Q57 */
 194        LPC_HM57,       /* HM57 */
 195        LPC_PCHMSFF,    /* PCH Mobile SFF Full Featured */
 196        LPC_QS57,       /* QS57 */
 197        LPC_3400,       /* 3400 */
 198        LPC_3420,       /* 3420 */
 199        LPC_3450,       /* 3450 */
 200        LPC_EP80579,    /* EP80579 */
 201        LPC_CPT,        /* Cougar Point */
 202        LPC_CPTD,       /* Cougar Point Desktop */
 203        LPC_CPTM,       /* Cougar Point Mobile */
 204        LPC_PBG,        /* Patsburg */
 205        LPC_DH89XXCC,   /* DH89xxCC */
 206        LPC_PPT,        /* Panther Point */
 207        LPC_LPT,        /* Lynx Point */
 208        LPC_LPT_LP,     /* Lynx Point-LP */
 209        LPC_WBG,        /* Wellsburg */
 210};
 211
 212struct lpc_ich_info lpc_chipset_info[] = {
 213        [LPC_ICH] = {
 214                .name = "ICH",
 215                .iTCO_version = 1,
 216        },
 217        [LPC_ICH0] = {
 218                .name = "ICH0",
 219                .iTCO_version = 1,
 220        },
 221        [LPC_ICH2] = {
 222                .name = "ICH2",
 223                .iTCO_version = 1,
 224        },
 225        [LPC_ICH2M] = {
 226                .name = "ICH2-M",
 227                .iTCO_version = 1,
 228        },
 229        [LPC_ICH3] = {
 230                .name = "ICH3-S",
 231                .iTCO_version = 1,
 232        },
 233        [LPC_ICH3M] = {
 234                .name = "ICH3-M",
 235                .iTCO_version = 1,
 236        },
 237        [LPC_ICH4] = {
 238                .name = "ICH4",
 239                .iTCO_version = 1,
 240        },
 241        [LPC_ICH4M] = {
 242                .name = "ICH4-M",
 243                .iTCO_version = 1,
 244        },
 245        [LPC_CICH] = {
 246                .name = "C-ICH",
 247                .iTCO_version = 1,
 248        },
 249        [LPC_ICH5] = {
 250                .name = "ICH5 or ICH5R",
 251                .iTCO_version = 1,
 252        },
 253        [LPC_6300ESB] = {
 254                .name = "6300ESB",
 255                .iTCO_version = 1,
 256        },
 257        [LPC_ICH6] = {
 258                .name = "ICH6 or ICH6R",
 259                .iTCO_version = 2,
 260                .gpio_version = ICH_V6_GPIO,
 261        },
 262        [LPC_ICH6M] = {
 263                .name = "ICH6-M",
 264                .iTCO_version = 2,
 265                .gpio_version = ICH_V6_GPIO,
 266        },
 267        [LPC_ICH6W] = {
 268                .name = "ICH6W or ICH6RW",
 269                .iTCO_version = 2,
 270                .gpio_version = ICH_V6_GPIO,
 271        },
 272        [LPC_631XESB] = {
 273                .name = "631xESB/632xESB",
 274                .iTCO_version = 2,
 275                .gpio_version = ICH_V6_GPIO,
 276        },
 277        [LPC_ICH7] = {
 278                .name = "ICH7 or ICH7R",
 279                .iTCO_version = 2,
 280                .gpio_version = ICH_V7_GPIO,
 281        },
 282        [LPC_ICH7DH] = {
 283                .name = "ICH7DH",
 284                .iTCO_version = 2,
 285                .gpio_version = ICH_V7_GPIO,
 286        },
 287        [LPC_ICH7M] = {
 288                .name = "ICH7-M or ICH7-U",
 289                .iTCO_version = 2,
 290                .gpio_version = ICH_V7_GPIO,
 291        },
 292        [LPC_ICH7MDH] = {
 293                .name = "ICH7-M DH",
 294                .iTCO_version = 2,
 295                .gpio_version = ICH_V7_GPIO,
 296        },
 297        [LPC_NM10] = {
 298                .name = "NM10",
 299                .iTCO_version = 2,
 300        },
 301        [LPC_ICH8] = {
 302                .name = "ICH8 or ICH8R",
 303                .iTCO_version = 2,
 304                .gpio_version = ICH_V7_GPIO,
 305        },
 306        [LPC_ICH8DH] = {
 307                .name = "ICH8DH",
 308                .iTCO_version = 2,
 309                .gpio_version = ICH_V7_GPIO,
 310        },
 311        [LPC_ICH8DO] = {
 312                .name = "ICH8DO",
 313                .iTCO_version = 2,
 314                .gpio_version = ICH_V7_GPIO,
 315        },
 316        [LPC_ICH8M] = {
 317                .name = "ICH8M",
 318                .iTCO_version = 2,
 319                .gpio_version = ICH_V7_GPIO,
 320        },
 321        [LPC_ICH8ME] = {
 322                .name = "ICH8M-E",
 323                .iTCO_version = 2,
 324                .gpio_version = ICH_V7_GPIO,
 325        },
 326        [LPC_ICH9] = {
 327                .name = "ICH9",
 328                .iTCO_version = 2,
 329                .gpio_version = ICH_V9_GPIO,
 330        },
 331        [LPC_ICH9R] = {
 332                .name = "ICH9R",
 333                .iTCO_version = 2,
 334                .gpio_version = ICH_V9_GPIO,
 335        },
 336        [LPC_ICH9DH] = {
 337                .name = "ICH9DH",
 338                .iTCO_version = 2,
 339                .gpio_version = ICH_V9_GPIO,
 340        },
 341        [LPC_ICH9DO] = {
 342                .name = "ICH9DO",
 343                .iTCO_version = 2,
 344                .gpio_version = ICH_V9_GPIO,
 345        },
 346        [LPC_ICH9M] = {
 347                .name = "ICH9M",
 348                .iTCO_version = 2,
 349                .gpio_version = ICH_V9_GPIO,
 350        },
 351        [LPC_ICH9ME] = {
 352                .name = "ICH9M-E",
 353                .iTCO_version = 2,
 354                .gpio_version = ICH_V9_GPIO,
 355        },
 356        [LPC_ICH10] = {
 357                .name = "ICH10",
 358                .iTCO_version = 2,
 359                .gpio_version = ICH_V10CONS_GPIO,
 360        },
 361        [LPC_ICH10R] = {
 362                .name = "ICH10R",
 363                .iTCO_version = 2,
 364                .gpio_version = ICH_V10CONS_GPIO,
 365        },
 366        [LPC_ICH10D] = {
 367                .name = "ICH10D",
 368                .iTCO_version = 2,
 369                .gpio_version = ICH_V10CORP_GPIO,
 370        },
 371        [LPC_ICH10DO] = {
 372                .name = "ICH10DO",
 373                .iTCO_version = 2,
 374                .gpio_version = ICH_V10CORP_GPIO,
 375        },
 376        [LPC_PCH] = {
 377                .name = "PCH Desktop Full Featured",
 378                .iTCO_version = 2,
 379                .gpio_version = ICH_V5_GPIO,
 380        },
 381        [LPC_PCHM] = {
 382                .name = "PCH Mobile Full Featured",
 383                .iTCO_version = 2,
 384                .gpio_version = ICH_V5_GPIO,
 385        },
 386        [LPC_P55] = {
 387                .name = "P55",
 388                .iTCO_version = 2,
 389                .gpio_version = ICH_V5_GPIO,
 390        },
 391        [LPC_PM55] = {
 392                .name = "PM55",
 393                .iTCO_version = 2,
 394                .gpio_version = ICH_V5_GPIO,
 395        },
 396        [LPC_H55] = {
 397                .name = "H55",
 398                .iTCO_version = 2,
 399                .gpio_version = ICH_V5_GPIO,
 400        },
 401        [LPC_QM57] = {
 402                .name = "QM57",
 403                .iTCO_version = 2,
 404                .gpio_version = ICH_V5_GPIO,
 405        },
 406        [LPC_H57] = {
 407                .name = "H57",
 408                .iTCO_version = 2,
 409                .gpio_version = ICH_V5_GPIO,
 410        },
 411        [LPC_HM55] = {
 412                .name = "HM55",
 413                .iTCO_version = 2,
 414                .gpio_version = ICH_V5_GPIO,
 415        },
 416        [LPC_Q57] = {
 417                .name = "Q57",
 418                .iTCO_version = 2,
 419                .gpio_version = ICH_V5_GPIO,
 420        },
 421        [LPC_HM57] = {
 422                .name = "HM57",
 423                .iTCO_version = 2,
 424                .gpio_version = ICH_V5_GPIO,
 425        },
 426        [LPC_PCHMSFF] = {
 427                .name = "PCH Mobile SFF Full Featured",
 428                .iTCO_version = 2,
 429                .gpio_version = ICH_V5_GPIO,
 430        },
 431        [LPC_QS57] = {
 432                .name = "QS57",
 433                .iTCO_version = 2,
 434                .gpio_version = ICH_V5_GPIO,
 435        },
 436        [LPC_3400] = {
 437                .name = "3400",
 438                .iTCO_version = 2,
 439                .gpio_version = ICH_V5_GPIO,
 440        },
 441        [LPC_3420] = {
 442                .name = "3420",
 443                .iTCO_version = 2,
 444                .gpio_version = ICH_V5_GPIO,
 445        },
 446        [LPC_3450] = {
 447                .name = "3450",
 448                .iTCO_version = 2,
 449                .gpio_version = ICH_V5_GPIO,
 450        },
 451        [LPC_EP80579] = {
 452                .name = "EP80579",
 453                .iTCO_version = 2,
 454        },
 455        [LPC_CPT] = {
 456                .name = "Cougar Point",
 457                .iTCO_version = 2,
 458                .gpio_version = ICH_V5_GPIO,
 459        },
 460        [LPC_CPTD] = {
 461                .name = "Cougar Point Desktop",
 462                .iTCO_version = 2,
 463                .gpio_version = ICH_V5_GPIO,
 464        },
 465        [LPC_CPTM] = {
 466                .name = "Cougar Point Mobile",
 467                .iTCO_version = 2,
 468                .gpio_version = ICH_V5_GPIO,
 469        },
 470        [LPC_PBG] = {
 471                .name = "Patsburg",
 472                .iTCO_version = 2,
 473        },
 474        [LPC_DH89XXCC] = {
 475                .name = "DH89xxCC",
 476                .iTCO_version = 2,
 477        },
 478        [LPC_PPT] = {
 479                .name = "Panther Point",
 480                .iTCO_version = 2,
 481        },
 482        [LPC_LPT] = {
 483                .name = "Lynx Point",
 484                .iTCO_version = 2,
 485        },
 486        [LPC_LPT_LP] = {
 487                .name = "Lynx Point_LP",
 488                .iTCO_version = 2,
 489        },
 490        [LPC_WBG] = {
 491                .name = "Wellsburg",
 492                .iTCO_version = 2,
 493        },
 494};
 495
 496/*
 497 * This data only exists for exporting the supported PCI ids
 498 * via MODULE_DEVICE_TABLE.  We do not actually register a
 499 * pci_driver, because the I/O Controller Hub has also other
 500 * functions that probably will be registered by other drivers.
 501 */
 502static DEFINE_PCI_DEVICE_TABLE(lpc_ich_ids) = {
 503        { PCI_VDEVICE(INTEL, 0x2410), LPC_ICH},
 504        { PCI_VDEVICE(INTEL, 0x2420), LPC_ICH0},
 505        { PCI_VDEVICE(INTEL, 0x2440), LPC_ICH2},
 506        { PCI_VDEVICE(INTEL, 0x244c), LPC_ICH2M},
 507        { PCI_VDEVICE(INTEL, 0x2480), LPC_ICH3},
 508        { PCI_VDEVICE(INTEL, 0x248c), LPC_ICH3M},
 509        { PCI_VDEVICE(INTEL, 0x24c0), LPC_ICH4},
 510        { PCI_VDEVICE(INTEL, 0x24cc), LPC_ICH4M},
 511        { PCI_VDEVICE(INTEL, 0x2450), LPC_CICH},
 512        { PCI_VDEVICE(INTEL, 0x24d0), LPC_ICH5},
 513        { PCI_VDEVICE(INTEL, 0x25a1), LPC_6300ESB},
 514        { PCI_VDEVICE(INTEL, 0x2640), LPC_ICH6},
 515        { PCI_VDEVICE(INTEL, 0x2641), LPC_ICH6M},
 516        { PCI_VDEVICE(INTEL, 0x2642), LPC_ICH6W},
 517        { PCI_VDEVICE(INTEL, 0x2670), LPC_631XESB},
 518        { PCI_VDEVICE(INTEL, 0x2671), LPC_631XESB},
 519        { PCI_VDEVICE(INTEL, 0x2672), LPC_631XESB},
 520        { PCI_VDEVICE(INTEL, 0x2673), LPC_631XESB},
 521        { PCI_VDEVICE(INTEL, 0x2674), LPC_631XESB},
 522        { PCI_VDEVICE(INTEL, 0x2675), LPC_631XESB},
 523        { PCI_VDEVICE(INTEL, 0x2676), LPC_631XESB},
 524        { PCI_VDEVICE(INTEL, 0x2677), LPC_631XESB},
 525        { PCI_VDEVICE(INTEL, 0x2678), LPC_631XESB},
 526        { PCI_VDEVICE(INTEL, 0x2679), LPC_631XESB},
 527        { PCI_VDEVICE(INTEL, 0x267a), LPC_631XESB},
 528        { PCI_VDEVICE(INTEL, 0x267b), LPC_631XESB},
 529        { PCI_VDEVICE(INTEL, 0x267c), LPC_631XESB},
 530        { PCI_VDEVICE(INTEL, 0x267d), LPC_631XESB},
 531        { PCI_VDEVICE(INTEL, 0x267e), LPC_631XESB},
 532        { PCI_VDEVICE(INTEL, 0x267f), LPC_631XESB},
 533        { PCI_VDEVICE(INTEL, 0x27b8), LPC_ICH7},
 534        { PCI_VDEVICE(INTEL, 0x27b0), LPC_ICH7DH},
 535        { PCI_VDEVICE(INTEL, 0x27b9), LPC_ICH7M},
 536        { PCI_VDEVICE(INTEL, 0x27bd), LPC_ICH7MDH},
 537        { PCI_VDEVICE(INTEL, 0x27bc), LPC_NM10},
 538        { PCI_VDEVICE(INTEL, 0x2810), LPC_ICH8},
 539        { PCI_VDEVICE(INTEL, 0x2812), LPC_ICH8DH},
 540        { PCI_VDEVICE(INTEL, 0x2814), LPC_ICH8DO},
 541        { PCI_VDEVICE(INTEL, 0x2815), LPC_ICH8M},
 542        { PCI_VDEVICE(INTEL, 0x2811), LPC_ICH8ME},
 543        { PCI_VDEVICE(INTEL, 0x2918), LPC_ICH9},
 544        { PCI_VDEVICE(INTEL, 0x2916), LPC_ICH9R},
 545        { PCI_VDEVICE(INTEL, 0x2912), LPC_ICH9DH},
 546        { PCI_VDEVICE(INTEL, 0x2914), LPC_ICH9DO},
 547        { PCI_VDEVICE(INTEL, 0x2919), LPC_ICH9M},
 548        { PCI_VDEVICE(INTEL, 0x2917), LPC_ICH9ME},
 549        { PCI_VDEVICE(INTEL, 0x3a18), LPC_ICH10},
 550        { PCI_VDEVICE(INTEL, 0x3a16), LPC_ICH10R},
 551        { PCI_VDEVICE(INTEL, 0x3a1a), LPC_ICH10D},
 552        { PCI_VDEVICE(INTEL, 0x3a14), LPC_ICH10DO},
 553        { PCI_VDEVICE(INTEL, 0x3b00), LPC_PCH},
 554        { PCI_VDEVICE(INTEL, 0x3b01), LPC_PCHM},
 555        { PCI_VDEVICE(INTEL, 0x3b02), LPC_P55},
 556        { PCI_VDEVICE(INTEL, 0x3b03), LPC_PM55},
 557        { PCI_VDEVICE(INTEL, 0x3b06), LPC_H55},
 558        { PCI_VDEVICE(INTEL, 0x3b07), LPC_QM57},
 559        { PCI_VDEVICE(INTEL, 0x3b08), LPC_H57},
 560        { PCI_VDEVICE(INTEL, 0x3b09), LPC_HM55},
 561        { PCI_VDEVICE(INTEL, 0x3b0a), LPC_Q57},
 562        { PCI_VDEVICE(INTEL, 0x3b0b), LPC_HM57},
 563        { PCI_VDEVICE(INTEL, 0x3b0d), LPC_PCHMSFF},
 564        { PCI_VDEVICE(INTEL, 0x3b0f), LPC_QS57},
 565        { PCI_VDEVICE(INTEL, 0x3b12), LPC_3400},
 566        { PCI_VDEVICE(INTEL, 0x3b14), LPC_3420},
 567        { PCI_VDEVICE(INTEL, 0x3b16), LPC_3450},
 568        { PCI_VDEVICE(INTEL, 0x5031), LPC_EP80579},
 569        { PCI_VDEVICE(INTEL, 0x1c41), LPC_CPT},
 570        { PCI_VDEVICE(INTEL, 0x1c42), LPC_CPTD},
 571        { PCI_VDEVICE(INTEL, 0x1c43), LPC_CPTM},
 572        { PCI_VDEVICE(INTEL, 0x1c44), LPC_CPT},
 573        { PCI_VDEVICE(INTEL, 0x1c45), LPC_CPT},
 574        { PCI_VDEVICE(INTEL, 0x1c46), LPC_CPT},
 575        { PCI_VDEVICE(INTEL, 0x1c47), LPC_CPT},
 576        { PCI_VDEVICE(INTEL, 0x1c48), LPC_CPT},
 577        { PCI_VDEVICE(INTEL, 0x1c49), LPC_CPT},
 578        { PCI_VDEVICE(INTEL, 0x1c4a), LPC_CPT},
 579        { PCI_VDEVICE(INTEL, 0x1c4b), LPC_CPT},
 580        { PCI_VDEVICE(INTEL, 0x1c4c), LPC_CPT},
 581        { PCI_VDEVICE(INTEL, 0x1c4d), LPC_CPT},
 582        { PCI_VDEVICE(INTEL, 0x1c4e), LPC_CPT},
 583        { PCI_VDEVICE(INTEL, 0x1c4f), LPC_CPT},
 584        { PCI_VDEVICE(INTEL, 0x1c50), LPC_CPT},
 585        { PCI_VDEVICE(INTEL, 0x1c51), LPC_CPT},
 586        { PCI_VDEVICE(INTEL, 0x1c52), LPC_CPT},
 587        { PCI_VDEVICE(INTEL, 0x1c53), LPC_CPT},
 588        { PCI_VDEVICE(INTEL, 0x1c54), LPC_CPT},
 589        { PCI_VDEVICE(INTEL, 0x1c55), LPC_CPT},
 590        { PCI_VDEVICE(INTEL, 0x1c56), LPC_CPT},
 591        { PCI_VDEVICE(INTEL, 0x1c57), LPC_CPT},
 592        { PCI_VDEVICE(INTEL, 0x1c58), LPC_CPT},
 593        { PCI_VDEVICE(INTEL, 0x1c59), LPC_CPT},
 594        { PCI_VDEVICE(INTEL, 0x1c5a), LPC_CPT},
 595        { PCI_VDEVICE(INTEL, 0x1c5b), LPC_CPT},
 596        { PCI_VDEVICE(INTEL, 0x1c5c), LPC_CPT},
 597        { PCI_VDEVICE(INTEL, 0x1c5d), LPC_CPT},
 598        { PCI_VDEVICE(INTEL, 0x1c5e), LPC_CPT},
 599        { PCI_VDEVICE(INTEL, 0x1c5f), LPC_CPT},
 600        { PCI_VDEVICE(INTEL, 0x1d40), LPC_PBG},
 601        { PCI_VDEVICE(INTEL, 0x1d41), LPC_PBG},
 602        { PCI_VDEVICE(INTEL, 0x2310), LPC_DH89XXCC},
 603        { PCI_VDEVICE(INTEL, 0x1e40), LPC_PPT},
 604        { PCI_VDEVICE(INTEL, 0x1e41), LPC_PPT},
 605        { PCI_VDEVICE(INTEL, 0x1e42), LPC_PPT},
 606        { PCI_VDEVICE(INTEL, 0x1e43), LPC_PPT},
 607        { PCI_VDEVICE(INTEL, 0x1e44), LPC_PPT},
 608        { PCI_VDEVICE(INTEL, 0x1e45), LPC_PPT},
 609        { PCI_VDEVICE(INTEL, 0x1e46), LPC_PPT},
 610        { PCI_VDEVICE(INTEL, 0x1e47), LPC_PPT},
 611        { PCI_VDEVICE(INTEL, 0x1e48), LPC_PPT},
 612        { PCI_VDEVICE(INTEL, 0x1e49), LPC_PPT},
 613        { PCI_VDEVICE(INTEL, 0x1e4a), LPC_PPT},
 614        { PCI_VDEVICE(INTEL, 0x1e4b), LPC_PPT},
 615        { PCI_VDEVICE(INTEL, 0x1e4c), LPC_PPT},
 616        { PCI_VDEVICE(INTEL, 0x1e4d), LPC_PPT},
 617        { PCI_VDEVICE(INTEL, 0x1e4e), LPC_PPT},
 618        { PCI_VDEVICE(INTEL, 0x1e4f), LPC_PPT},
 619        { PCI_VDEVICE(INTEL, 0x1e50), LPC_PPT},
 620        { PCI_VDEVICE(INTEL, 0x1e51), LPC_PPT},
 621        { PCI_VDEVICE(INTEL, 0x1e52), LPC_PPT},
 622        { PCI_VDEVICE(INTEL, 0x1e53), LPC_PPT},
 623        { PCI_VDEVICE(INTEL, 0x1e54), LPC_PPT},
 624        { PCI_VDEVICE(INTEL, 0x1e55), LPC_PPT},
 625        { PCI_VDEVICE(INTEL, 0x1e56), LPC_PPT},
 626        { PCI_VDEVICE(INTEL, 0x1e57), LPC_PPT},
 627        { PCI_VDEVICE(INTEL, 0x1e58), LPC_PPT},
 628        { PCI_VDEVICE(INTEL, 0x1e59), LPC_PPT},
 629        { PCI_VDEVICE(INTEL, 0x1e5a), LPC_PPT},
 630        { PCI_VDEVICE(INTEL, 0x1e5b), LPC_PPT},
 631        { PCI_VDEVICE(INTEL, 0x1e5c), LPC_PPT},
 632        { PCI_VDEVICE(INTEL, 0x1e5d), LPC_PPT},
 633        { PCI_VDEVICE(INTEL, 0x1e5e), LPC_PPT},
 634        { PCI_VDEVICE(INTEL, 0x1e5f), LPC_PPT},
 635        { PCI_VDEVICE(INTEL, 0x8c40), LPC_LPT},
 636        { PCI_VDEVICE(INTEL, 0x8c41), LPC_LPT},
 637        { PCI_VDEVICE(INTEL, 0x8c42), LPC_LPT},
 638        { PCI_VDEVICE(INTEL, 0x8c43), LPC_LPT},
 639        { PCI_VDEVICE(INTEL, 0x8c44), LPC_LPT},
 640        { PCI_VDEVICE(INTEL, 0x8c45), LPC_LPT},
 641        { PCI_VDEVICE(INTEL, 0x8c46), LPC_LPT},
 642        { PCI_VDEVICE(INTEL, 0x8c47), LPC_LPT},
 643        { PCI_VDEVICE(INTEL, 0x8c48), LPC_LPT},
 644        { PCI_VDEVICE(INTEL, 0x8c49), LPC_LPT},
 645        { PCI_VDEVICE(INTEL, 0x8c4a), LPC_LPT},
 646        { PCI_VDEVICE(INTEL, 0x8c4b), LPC_LPT},
 647        { PCI_VDEVICE(INTEL, 0x8c4c), LPC_LPT},
 648        { PCI_VDEVICE(INTEL, 0x8c4d), LPC_LPT},
 649        { PCI_VDEVICE(INTEL, 0x8c4e), LPC_LPT},
 650        { PCI_VDEVICE(INTEL, 0x8c4f), LPC_LPT},
 651        { PCI_VDEVICE(INTEL, 0x8c50), LPC_LPT},
 652        { PCI_VDEVICE(INTEL, 0x8c51), LPC_LPT},
 653        { PCI_VDEVICE(INTEL, 0x8c52), LPC_LPT},
 654        { PCI_VDEVICE(INTEL, 0x8c53), LPC_LPT},
 655        { PCI_VDEVICE(INTEL, 0x8c54), LPC_LPT},
 656        { PCI_VDEVICE(INTEL, 0x8c55), LPC_LPT},
 657        { PCI_VDEVICE(INTEL, 0x8c56), LPC_LPT},
 658        { PCI_VDEVICE(INTEL, 0x8c57), LPC_LPT},
 659        { PCI_VDEVICE(INTEL, 0x8c58), LPC_LPT},
 660        { PCI_VDEVICE(INTEL, 0x8c59), LPC_LPT},
 661        { PCI_VDEVICE(INTEL, 0x8c5a), LPC_LPT},
 662        { PCI_VDEVICE(INTEL, 0x8c5b), LPC_LPT},
 663        { PCI_VDEVICE(INTEL, 0x8c5c), LPC_LPT},
 664        { PCI_VDEVICE(INTEL, 0x8c5d), LPC_LPT},
 665        { PCI_VDEVICE(INTEL, 0x8c5e), LPC_LPT},
 666        { PCI_VDEVICE(INTEL, 0x8c5f), LPC_LPT},
 667        { PCI_VDEVICE(INTEL, 0x9c40), LPC_LPT_LP},
 668        { PCI_VDEVICE(INTEL, 0x9c41), LPC_LPT_LP},
 669        { PCI_VDEVICE(INTEL, 0x9c42), LPC_LPT_LP},
 670        { PCI_VDEVICE(INTEL, 0x9c43), LPC_LPT_LP},
 671        { PCI_VDEVICE(INTEL, 0x9c44), LPC_LPT_LP},
 672        { PCI_VDEVICE(INTEL, 0x9c45), LPC_LPT_LP},
 673        { PCI_VDEVICE(INTEL, 0x9c46), LPC_LPT_LP},
 674        { PCI_VDEVICE(INTEL, 0x9c47), LPC_LPT_LP},
 675        { PCI_VDEVICE(INTEL, 0x8d40), LPC_WBG},
 676        { PCI_VDEVICE(INTEL, 0x8d41), LPC_WBG},
 677        { PCI_VDEVICE(INTEL, 0x8d42), LPC_WBG},
 678        { PCI_VDEVICE(INTEL, 0x8d43), LPC_WBG},
 679        { PCI_VDEVICE(INTEL, 0x8d44), LPC_WBG},
 680        { PCI_VDEVICE(INTEL, 0x8d45), LPC_WBG},
 681        { PCI_VDEVICE(INTEL, 0x8d46), LPC_WBG},
 682        { PCI_VDEVICE(INTEL, 0x8d47), LPC_WBG},
 683        { PCI_VDEVICE(INTEL, 0x8d48), LPC_WBG},
 684        { PCI_VDEVICE(INTEL, 0x8d49), LPC_WBG},
 685        { PCI_VDEVICE(INTEL, 0x8d4a), LPC_WBG},
 686        { PCI_VDEVICE(INTEL, 0x8d4b), LPC_WBG},
 687        { PCI_VDEVICE(INTEL, 0x8d4c), LPC_WBG},
 688        { PCI_VDEVICE(INTEL, 0x8d4d), LPC_WBG},
 689        { PCI_VDEVICE(INTEL, 0x8d4e), LPC_WBG},
 690        { PCI_VDEVICE(INTEL, 0x8d4f), LPC_WBG},
 691        { PCI_VDEVICE(INTEL, 0x8d50), LPC_WBG},
 692        { PCI_VDEVICE(INTEL, 0x8d51), LPC_WBG},
 693        { PCI_VDEVICE(INTEL, 0x8d52), LPC_WBG},
 694        { PCI_VDEVICE(INTEL, 0x8d53), LPC_WBG},
 695        { PCI_VDEVICE(INTEL, 0x8d54), LPC_WBG},
 696        { PCI_VDEVICE(INTEL, 0x8d55), LPC_WBG},
 697        { PCI_VDEVICE(INTEL, 0x8d56), LPC_WBG},
 698        { PCI_VDEVICE(INTEL, 0x8d57), LPC_WBG},
 699        { PCI_VDEVICE(INTEL, 0x8d58), LPC_WBG},
 700        { PCI_VDEVICE(INTEL, 0x8d59), LPC_WBG},
 701        { PCI_VDEVICE(INTEL, 0x8d5a), LPC_WBG},
 702        { PCI_VDEVICE(INTEL, 0x8d5b), LPC_WBG},
 703        { PCI_VDEVICE(INTEL, 0x8d5c), LPC_WBG},
 704        { PCI_VDEVICE(INTEL, 0x8d5d), LPC_WBG},
 705        { PCI_VDEVICE(INTEL, 0x8d5e), LPC_WBG},
 706        { PCI_VDEVICE(INTEL, 0x8d5f), LPC_WBG},
 707        { 0, },                 /* End of list */
 708};
 709MODULE_DEVICE_TABLE(pci, lpc_ich_ids);
 710
 711static void lpc_ich_restore_config_space(struct pci_dev *dev)
 712{
 713        struct lpc_ich_priv *priv = pci_get_drvdata(dev);
 714
 715        if (priv->acpi.save >= 0) {
 716                pci_write_config_byte(dev, priv->acpi.ctrl, priv->acpi.save);
 717                priv->acpi.save = -1;
 718        }
 719
 720        if (priv->gpio.save >= 0) {
 721                pci_write_config_byte(dev, priv->gpio.ctrl, priv->gpio.save);
 722                priv->gpio.save = -1;
 723        }
 724}
 725
 726static void lpc_ich_enable_acpi_space(struct pci_dev *dev)
 727{
 728        struct lpc_ich_priv *priv = pci_get_drvdata(dev);
 729        u8 reg_save;
 730
 731        pci_read_config_byte(dev, priv->acpi.ctrl, &reg_save);
 732        pci_write_config_byte(dev, priv->acpi.ctrl, reg_save | 0x10);
 733        priv->acpi.save = reg_save;
 734}
 735
 736static void lpc_ich_enable_gpio_space(struct pci_dev *dev)
 737{
 738        struct lpc_ich_priv *priv = pci_get_drvdata(dev);
 739        u8 reg_save;
 740
 741        pci_read_config_byte(dev, priv->gpio.ctrl, &reg_save);
 742        pci_write_config_byte(dev, priv->gpio.ctrl, reg_save | 0x10);
 743        priv->gpio.save = reg_save;
 744}
 745
 746static void lpc_ich_finalize_cell(struct pci_dev *dev, struct mfd_cell *cell)
 747{
 748        struct lpc_ich_priv *priv = pci_get_drvdata(dev);
 749
 750        cell->platform_data = &lpc_chipset_info[priv->chipset];
 751        cell->pdata_size = sizeof(struct lpc_ich_info);
 752}
 753
 754/*
 755 * We don't check for resource conflict globally. There are 2 or 3 independent
 756 * GPIO groups and it's enough to have access to one of these to instantiate
 757 * the device.
 758 */
 759static int lpc_ich_check_conflict_gpio(struct resource *res)
 760{
 761        int ret;
 762        u8 use_gpio = 0;
 763
 764        if (resource_size(res) >= 0x50 &&
 765            !acpi_check_region(res->start + 0x40, 0x10, "LPC ICH GPIO3"))
 766                use_gpio |= 1 << 2;
 767
 768        if (!acpi_check_region(res->start + 0x30, 0x10, "LPC ICH GPIO2"))
 769                use_gpio |= 1 << 1;
 770
 771        ret = acpi_check_region(res->start + 0x00, 0x30, "LPC ICH GPIO1");
 772        if (!ret)
 773                use_gpio |= 1 << 0;
 774
 775        return use_gpio ? use_gpio : ret;
 776}
 777
 778static int lpc_ich_init_gpio(struct pci_dev *dev)
 779{
 780        struct lpc_ich_priv *priv = pci_get_drvdata(dev);
 781        u32 base_addr_cfg;
 782        u32 base_addr;
 783        int ret;
 784        bool acpi_conflict = false;
 785        struct resource *res;
 786
 787        /* Setup power management base register */
 788        pci_read_config_dword(dev, priv->acpi.base, &base_addr_cfg);
 789        base_addr = base_addr_cfg & 0x0000ff80;
 790        if (!base_addr) {
 791                dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n");
 792                lpc_ich_cells[LPC_GPIO].num_resources--;
 793                goto gpe0_done;
 794        }
 795
 796        res = &gpio_ich_res[ICH_RES_GPE0];
 797        res->start = base_addr + ACPIBASE_GPE_OFF;
 798        res->end = base_addr + ACPIBASE_GPE_END;
 799        ret = acpi_check_resource_conflict(res);
 800        if (ret) {
 801                /*
 802                 * This isn't fatal for the GPIO, but we have to make sure that
 803                 * the platform_device subsystem doesn't see this resource
 804                 * or it will register an invalid region.
 805                 */
 806                lpc_ich_cells[LPC_GPIO].num_resources--;
 807                acpi_conflict = true;
 808        } else {
 809                lpc_ich_enable_acpi_space(dev);
 810        }
 811
 812gpe0_done:
 813        /* Setup GPIO base register */
 814        pci_read_config_dword(dev, priv->gpio.base, &base_addr_cfg);
 815        base_addr = base_addr_cfg & 0x0000ff80;
 816        if (!base_addr) {
 817                dev_notice(&dev->dev, "I/O space for GPIO uninitialized\n");
 818                ret = -ENODEV;
 819                goto gpio_done;
 820        }
 821
 822        /* Older devices provide fewer GPIO and have a smaller resource size. */
 823        res = &gpio_ich_res[ICH_RES_GPIO];
 824        res->start = base_addr;
 825        switch (lpc_chipset_info[priv->chipset].gpio_version) {
 826        case ICH_V5_GPIO:
 827        case ICH_V10CORP_GPIO:
 828                res->end = res->start + 128 - 1;
 829                break;
 830        default:
 831                res->end = res->start + 64 - 1;
 832                break;
 833        }
 834
 835        ret = lpc_ich_check_conflict_gpio(res);
 836        if (ret < 0) {
 837                /* this isn't necessarily fatal for the GPIO */
 838                acpi_conflict = true;
 839                goto gpio_done;
 840        }
 841        lpc_chipset_info[priv->chipset].use_gpio = ret;
 842        lpc_ich_enable_gpio_space(dev);
 843
 844        lpc_ich_finalize_cell(dev, &lpc_ich_cells[LPC_GPIO]);
 845        ret = mfd_add_devices(&dev->dev, -1, &lpc_ich_cells[LPC_GPIO],
 846                              1, NULL, 0, NULL);
 847
 848gpio_done:
 849        if (acpi_conflict)
 850                pr_warn("Resource conflict(s) found affecting %s\n",
 851                                lpc_ich_cells[LPC_GPIO].name);
 852        return ret;
 853}
 854
 855static int lpc_ich_init_wdt(struct pci_dev *dev)
 856{
 857        struct lpc_ich_priv *priv = pci_get_drvdata(dev);
 858        u32 base_addr_cfg;
 859        u32 base_addr;
 860        int ret;
 861        struct resource *res;
 862
 863        /* Setup power management base register */
 864        pci_read_config_dword(dev, priv->acpi.base, &base_addr_cfg);
 865        base_addr = base_addr_cfg & 0x0000ff80;
 866        if (!base_addr) {
 867                dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n");
 868                ret = -ENODEV;
 869                goto wdt_done;
 870        }
 871
 872        res = wdt_io_res(ICH_RES_IO_TCO);
 873        res->start = base_addr + ACPIBASE_TCO_OFF;
 874        res->end = base_addr + ACPIBASE_TCO_END;
 875
 876        res = wdt_io_res(ICH_RES_IO_SMI);
 877        res->start = base_addr + ACPIBASE_SMI_OFF;
 878        res->end = base_addr + ACPIBASE_SMI_END;
 879
 880        lpc_ich_enable_acpi_space(dev);
 881
 882        /*
 883         * Get the Memory-Mapped GCS register. To get access to it
 884         * we have to read RCBA from PCI Config space 0xf0 and use
 885         * it as base. GCS = RCBA + ICH6_GCS(0x3410).
 886         */
 887        if (lpc_chipset_info[priv->chipset].iTCO_version == 1) {
 888                /* Don't register iomem for TCO ver 1 */
 889                lpc_ich_cells[LPC_WDT].num_resources--;
 890        } else {
 891                pci_read_config_dword(dev, RCBABASE, &base_addr_cfg);
 892                base_addr = base_addr_cfg & 0xffffc000;
 893                if (!(base_addr_cfg & 1)) {
 894                        dev_notice(&dev->dev, "RCBA is disabled by "
 895                                        "hardware/BIOS, device disabled\n");
 896                        ret = -ENODEV;
 897                        goto wdt_done;
 898                }
 899                res = wdt_mem_res(ICH_RES_MEM_GCS);
 900                res->start = base_addr + ACPIBASE_GCS_OFF;
 901                res->end = base_addr + ACPIBASE_GCS_END;
 902        }
 903
 904        lpc_ich_finalize_cell(dev, &lpc_ich_cells[LPC_WDT]);
 905        ret = mfd_add_devices(&dev->dev, -1, &lpc_ich_cells[LPC_WDT],
 906                              1, NULL, 0, NULL);
 907
 908wdt_done:
 909        return ret;
 910}
 911
 912static int lpc_ich_probe(struct pci_dev *dev,
 913                                const struct pci_device_id *id)
 914{
 915        struct lpc_ich_priv *priv;
 916        int ret;
 917        bool cell_added = false;
 918
 919        priv = devm_kzalloc(&dev->dev,
 920                            sizeof(struct lpc_ich_priv), GFP_KERNEL);
 921        if (!priv)
 922                return -ENOMEM;
 923
 924        priv->chipset = id->driver_data;
 925        priv->acpi.save = -1;
 926        priv->acpi.base = ACPIBASE;
 927        priv->acpi.ctrl = ACPICTRL;
 928
 929        priv->gpio.save = -1;
 930        if (priv->chipset <= LPC_ICH5) {
 931                priv->gpio.base = GPIOBASE_ICH0;
 932                priv->gpio.ctrl = GPIOCTRL_ICH0;
 933        } else {
 934                priv->gpio.base = GPIOBASE_ICH6;
 935                priv->gpio.ctrl = GPIOCTRL_ICH6;
 936        }
 937
 938        pci_set_drvdata(dev, priv);
 939
 940        ret = lpc_ich_init_wdt(dev);
 941        if (!ret)
 942                cell_added = true;
 943
 944        ret = lpc_ich_init_gpio(dev);
 945        if (!ret)
 946                cell_added = true;
 947
 948        /*
 949         * We only care if at least one or none of the cells registered
 950         * successfully.
 951         */
 952        if (!cell_added) {
 953                dev_warn(&dev->dev, "No MFD cells added\n");
 954                lpc_ich_restore_config_space(dev);
 955                pci_set_drvdata(dev, NULL);
 956                return -ENODEV;
 957        }
 958
 959        return 0;
 960}
 961
 962static void lpc_ich_remove(struct pci_dev *dev)
 963{
 964        mfd_remove_devices(&dev->dev);
 965        lpc_ich_restore_config_space(dev);
 966        pci_set_drvdata(dev, NULL);
 967}
 968
 969static struct pci_driver lpc_ich_driver = {
 970        .name           = "lpc_ich",
 971        .id_table       = lpc_ich_ids,
 972        .probe          = lpc_ich_probe,
 973        .remove         = lpc_ich_remove,
 974};
 975
 976static int __init lpc_ich_init(void)
 977{
 978        return pci_register_driver(&lpc_ich_driver);
 979}
 980
 981static void __exit lpc_ich_exit(void)
 982{
 983        pci_unregister_driver(&lpc_ich_driver);
 984}
 985
 986module_init(lpc_ich_init);
 987module_exit(lpc_ich_exit);
 988
 989MODULE_AUTHOR("Aaron Sierra <asierra@xes-inc.com>");
 990MODULE_DESCRIPTION("LPC interface for Intel ICH");
 991MODULE_LICENSE("GPL");
 992
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