drivers/mfd/kempld-core.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Kontron PLD MFD core driver
   4  *
   5  * Copyright (c) 2010-2013 Kontron Europe GmbH
   6  * Author: Michael Brunner <michael.brunner@kontron.com>
   7  */
   8
   9 #include <linux/platform_device.h>
  10 #include <linux/mfd/core.h>
  11 #include <linux/mfd/kempld.h>
  12 #include <linux/module.h>
  13 #include <linux/dmi.h>
  14 #include <linux/io.h>
  15 #include <linux/delay.h>
  16 #include <linux/acpi.h>
  17
  18 #define MAX_ID_LEN 4
  19 static char force_device_id[MAX_ID_LEN + 1] = "";
  20 module_param_string(force_device_id, force_device_id,
  21                     sizeof(force_device_id), 0);
  22 MODULE_PARM_DESC(force_device_id, "Override detected product");
  23
  24 /*
  25  * Get hardware mutex to block firmware from accessing the pld.
  26  * It is possible for the firmware may hold the mutex for an extended length of
  27  * time. This function will block until access has been granted.
  28  */
  29 static void kempld_get_hardware_mutex(struct kempld_device_data *pld)
  30 {
  31         /* The mutex bit will read 1 until access has been granted */
  32         while (ioread8(pld->io_index) & KEMPLD_MUTEX_KEY)
  33                 usleep_range(1000, 3000);
  34 }
  35
  36 static void kempld_release_hardware_mutex(struct kempld_device_data *pld)
  37 {
  38         /* The harware mutex is released when 1 is written to the mutex bit. */
  39         iowrite8(KEMPLD_MUTEX_KEY, pld->io_index);
  40 }
  41
  42 static int kempld_get_info_generic(struct kempld_device_data *pld)
  43 {
  44         u16 version;
  45         u8 spec;
  46
  47         kempld_get_mutex(pld);
  48
  49         version = kempld_read16(pld, KEMPLD_VERSION);
  50         spec = kempld_read8(pld, KEMPLD_SPEC);
  51         pld->info.buildnr = kempld_read16(pld, KEMPLD_BUILDNR);
  52
  53         pld->info.minor = KEMPLD_VERSION_GET_MINOR(version);
  54         pld->info.major = KEMPLD_VERSION_GET_MAJOR(version);
  55         pld->info.number = KEMPLD_VERSION_GET_NUMBER(version);
  56         pld->info.type = KEMPLD_VERSION_GET_TYPE(version);
  57
  58         if (spec == 0xff) {
  59                 pld->info.spec_minor = 0;
  60                 pld->info.spec_major = 1;
  61         } else {
  62                 pld->info.spec_minor = KEMPLD_SPEC_GET_MINOR(spec);
  63                 pld->info.spec_major = KEMPLD_SPEC_GET_MAJOR(spec);
  64         }
  65
  66         if (pld->info.spec_major > 0)
  67                 pld->feature_mask = kempld_read16(pld, KEMPLD_FEATURE);
  68         else
  69                 pld->feature_mask = 0;
  70
  71         kempld_release_mutex(pld);
  72
  73         return 0;
  74 }
  75
  76 enum kempld_cells {
  77         KEMPLD_I2C = 0,
  78         KEMPLD_WDT,
  79         KEMPLD_GPIO,
  80         KEMPLD_UART,
  81 };
  82
  83 static const char *kempld_dev_names[] = {
  84         [KEMPLD_I2C] = "kempld-i2c",
  85         [KEMPLD_WDT] = "kempld-wdt",
  86         [KEMPLD_GPIO] = "kempld-gpio",
  87         [KEMPLD_UART] = "kempld-uart",
  88 };
  89
  90 #define KEMPLD_MAX_DEVS ARRAY_SIZE(kempld_dev_names)
  91
  92 static int kempld_register_cells_generic(struct kempld_device_data *pld)
  93 {
  94         struct mfd_cell devs[KEMPLD_MAX_DEVS] = {};
  95         int i = 0;
  96
  97         if (pld->feature_mask & KEMPLD_FEATURE_BIT_I2C)
  98                 devs[i++].name = kempld_dev_names[KEMPLD_I2C];
  99
 100         if (pld->feature_mask & KEMPLD_FEATURE_BIT_WATCHDOG)
 101                 devs[i++].name = kempld_dev_names[KEMPLD_WDT];
 102
 103         if (pld->feature_mask & KEMPLD_FEATURE_BIT_GPIO)
 104                 devs[i++].name = kempld_dev_names[KEMPLD_GPIO];
 105
 106         if (pld->feature_mask & KEMPLD_FEATURE_MASK_UART)
 107                 devs[i++].name = kempld_dev_names[KEMPLD_UART];
 108
 109         return mfd_add_devices(pld->dev, -1, devs, i, NULL, 0, NULL);
 110 }
 111
 112 static struct resource kempld_ioresource = {
 113         .start  = KEMPLD_IOINDEX,
 114         .end    = KEMPLD_IODATA,
 115         .flags  = IORESOURCE_IO,
 116 };
 117
 118 static const struct kempld_platform_data kempld_platform_data_generic = {
 119         .pld_clock              = KEMPLD_CLK,
 120         .ioresource             = &kempld_ioresource,
 121         .get_hardware_mutex     = kempld_get_hardware_mutex,
 122         .release_hardware_mutex = kempld_release_hardware_mutex,
 123         .get_info               = kempld_get_info_generic,
 124         .register_cells         = kempld_register_cells_generic,
 125 };
 126
 127 static struct platform_device *kempld_pdev;
 128
 129 static int kempld_create_platform_device(const struct dmi_system_id *id)
 130 {
 131         const struct kempld_platform_data *pdata = id->driver_data;
 132         int ret;
 133
 134         kempld_pdev = platform_device_alloc("kempld", -1);
 135         if (!kempld_pdev)
 136                 return -ENOMEM;
 137
 138         ret = platform_device_add_data(kempld_pdev, pdata, sizeof(*pdata));
 139         if (ret)
 140                 goto err;
 141
 142         ret = platform_device_add_resources(kempld_pdev, pdata->ioresource, 1);
 143         if (ret)
 144                 goto err;
 145
 146         ret = platform_device_add(kempld_pdev);
 147         if (ret)
 148                 goto err;
 149
 150         return 0;
 151 err:
 152         platform_device_put(kempld_pdev);
 153         return ret;
 154 }
 155
 156 /**
 157  * kempld_read8 - read 8 bit register
 158  * @pld: kempld_device_data structure describing the PLD
 159  * @index: register index on the chip
 160  *
 161  * kempld_get_mutex must be called prior to calling this function.
 162  */
 163 u8 kempld_read8(struct kempld_device_data *pld, u8 index)
 164 {
 165         iowrite8(index, pld->io_index);
 166         return ioread8(pld->io_data);
 167 }
 168 EXPORT_SYMBOL_GPL(kempld_read8);
 169
 170 /**
 171  * kempld_write8 - write 8 bit register
 172  * @pld: kempld_device_data structure describing the PLD
 173  * @index: register index on the chip
 174  * @data: new register value
 175  *
 176  * kempld_get_mutex must be called prior to calling this function.
 177  */
 178 void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data)
 179 {
 180         iowrite8(index, pld->io_index);
 181         iowrite8(data, pld->io_data);
 182 }
 183 EXPORT_SYMBOL_GPL(kempld_write8);
 184
 185 /**
 186  * kempld_read16 - read 16 bit register
 187  * @pld: kempld_device_data structure describing the PLD
 188  * @index: register index on the chip
 189  *
 190  * kempld_get_mutex must be called prior to calling this function.
 191  */
 192 u16 kempld_read16(struct kempld_device_data *pld, u8 index)
 193 {
 194         return kempld_read8(pld, index) | kempld_read8(pld, index + 1) << 8;
 195 }
 196 EXPORT_SYMBOL_GPL(kempld_read16);
 197
 198 /**
 199  * kempld_write16 - write 16 bit register
 200  * @pld: kempld_device_data structure describing the PLD
 201  * @index: register index on the chip
 202  * @data: new register value
 203  *
 204  * kempld_get_mutex must be called prior to calling this function.
 205  */
 206 void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data)
 207 {
 208         kempld_write8(pld, index, (u8)data);
 209         kempld_write8(pld, index + 1, (u8)(data >> 8));
 210 }
 211 EXPORT_SYMBOL_GPL(kempld_write16);
 212
 213 /**
 214  * kempld_read32 - read 32 bit register
 215  * @pld: kempld_device_data structure describing the PLD
 216  * @index: register index on the chip
 217  *
 218  * kempld_get_mutex must be called prior to calling this function.
 219  */
 220 u32 kempld_read32(struct kempld_device_data *pld, u8 index)
 221 {
 222         return kempld_read16(pld, index) | kempld_read16(pld, index + 2) << 16;
 223 }
 224 EXPORT_SYMBOL_GPL(kempld_read32);
 225
 226 /**
 227  * kempld_write32 - write 32 bit register
 228  * @pld: kempld_device_data structure describing the PLD
 229  * @index: register index on the chip
 230  * @data: new register value
 231  *
 232  * kempld_get_mutex must be called prior to calling this function.
 233  */
 234 void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data)
 235 {
 236         kempld_write16(pld, index, (u16)data);
 237         kempld_write16(pld, index + 2, (u16)(data >> 16));
 238 }
 239 EXPORT_SYMBOL_GPL(kempld_write32);
 240
 241 /**
 242  * kempld_get_mutex - acquire PLD mutex
 243  * @pld: kempld_device_data structure describing the PLD
 244  */
 245 void kempld_get_mutex(struct kempld_device_data *pld)
 246 {
 247         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 248
 249         mutex_lock(&pld->lock);
 250         pdata->get_hardware_mutex(pld);
 251 }
 252 EXPORT_SYMBOL_GPL(kempld_get_mutex);
 253
 254 /**
 255  * kempld_release_mutex - release PLD mutex
 256  * @pld: kempld_device_data structure describing the PLD
 257  */
 258 void kempld_release_mutex(struct kempld_device_data *pld)
 259 {
 260         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 261
 262         pdata->release_hardware_mutex(pld);
 263         mutex_unlock(&pld->lock);
 264 }
 265 EXPORT_SYMBOL_GPL(kempld_release_mutex);
 266
 267 /**
 268  * kempld_get_info - update device specific information
 269  * @pld: kempld_device_data structure describing the PLD
 270  *
 271  * This function calls the configured board specific kempld_get_info_XXXX
 272  * function which is responsible for gathering information about the specific
 273  * hardware. The information is then stored within the pld structure.
 274  */
 275 static int kempld_get_info(struct kempld_device_data *pld)
 276 {
 277         int ret;
 278         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 279         char major, minor;
 280
 281         ret = pdata->get_info(pld);
 282         if (ret)
 283                 return ret;
 284
 285         /* The Kontron PLD firmware version string has the following format:
 286          * Pwxy.zzzz
 287          *   P:    Fixed
 288          *   w:    PLD number    - 1 hex digit
 289          *   x:    Major version - 1 alphanumerical digit (0-9A-V)
 290          *   y:    Minor version - 1 alphanumerical digit (0-9A-V)
 291          *   zzzz: Build number  - 4 zero padded hex digits */
 292
 293         if (pld->info.major < 10)
 294                 major = pld->info.major + '0';
 295         else
 296                 major = (pld->info.major - 10) + 'A';
 297         if (pld->info.minor < 10)
 298                 minor = pld->info.minor + '0';
 299         else
 300                 minor = (pld->info.minor - 10) + 'A';
 301
 302         ret = scnprintf(pld->info.version, sizeof(pld->info.version),
 303                         "P%X%c%c.%04X", pld->info.number, major, minor,
 304                         pld->info.buildnr);
 305         if (ret < 0)
 306                 return ret;
 307
 308         return 0;
 309 }
 310
 311 /*
 312  * kempld_register_cells - register cell drivers
 313  *
 314  * This function registers cell drivers for the detected hardware by calling
 315  * the configured kempld_register_cells_XXXX function which is responsible
 316  * to detect and register the needed cell drivers.
 317  */
 318 static int kempld_register_cells(struct kempld_device_data *pld)
 319 {
 320         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 321
 322         return pdata->register_cells(pld);
 323 }
 324
 325 static const char *kempld_get_type_string(struct kempld_device_data *pld)
 326 {
 327         const char *version_type;
 328
 329         switch (pld->info.type) {
 330         case 0:
 331                 version_type = "release";
 332                 break;
 333         case 1:
 334                 version_type = "debug";
 335                 break;
 336         case 2:
 337                 version_type = "custom";
 338                 break;
 339         default:
 340                 version_type = "unspecified";
 341                 break;
 342         }
 343
 344         return version_type;
 345 }
 346
 347 static ssize_t pld_version_show(struct device *dev,
 348                                 struct device_attribute *attr, char *buf)
 349 {
 350         struct kempld_device_data *pld = dev_get_drvdata(dev);
 351
 352         return scnprintf(buf, PAGE_SIZE, "%s\n", pld->info.version);
 353 }
 354
 355 static ssize_t pld_specification_show(struct device *dev,
 356                                       struct device_attribute *attr, char *buf)
 357 {
 358         struct kempld_device_data *pld = dev_get_drvdata(dev);
 359
 360         return scnprintf(buf, PAGE_SIZE, "%d.%d\n", pld->info.spec_major,
 361                        pld->info.spec_minor);
 362 }
 363
 364 static ssize_t pld_type_show(struct device *dev,
 365                              struct device_attribute *attr, char *buf)
 366 {
 367         struct kempld_device_data *pld = dev_get_drvdata(dev);
 368
 369         return scnprintf(buf, PAGE_SIZE, "%s\n", kempld_get_type_string(pld));
 370 }
 371
 372 static DEVICE_ATTR_RO(pld_version);
 373 static DEVICE_ATTR_RO(pld_specification);
 374 static DEVICE_ATTR_RO(pld_type);
 375
 376 static struct attribute *pld_attributes[] = {
 377         &dev_attr_pld_version.attr,
 378         &dev_attr_pld_specification.attr,
 379         &dev_attr_pld_type.attr,
 380         NULL
 381 };
 382
 383 static const struct attribute_group pld_attr_group = {
 384         .attrs = pld_attributes,
 385 };
 386
 387 static int kempld_detect_device(struct kempld_device_data *pld)
 388 {
 389         u8 index_reg;
 390         int ret;
 391
 392         mutex_lock(&pld->lock);
 393
 394         /* Check for empty IO space */
 395         index_reg = ioread8(pld->io_index);
 396         if (index_reg == 0xff && ioread8(pld->io_data) == 0xff) {
 397                 mutex_unlock(&pld->lock);
 398                 return -ENODEV;
 399         }
 400
 401         /* Release hardware mutex if acquired */
 402         if (!(index_reg & KEMPLD_MUTEX_KEY)) {
 403                 iowrite8(KEMPLD_MUTEX_KEY, pld->io_index);
 404                 /* PXT and COMe-cPC2 boards may require a second release */
 405                 iowrite8(KEMPLD_MUTEX_KEY, pld->io_index);
 406         }
 407
 408         mutex_unlock(&pld->lock);
 409
 410         ret = kempld_get_info(pld);
 411         if (ret)
 412                 return ret;
 413
 414         dev_info(pld->dev, "Found Kontron PLD - %s (%s), spec %d.%d\n",
 415                  pld->info.version, kempld_get_type_string(pld),
 416                  pld->info.spec_major, pld->info.spec_minor);
 417
 418         ret = sysfs_create_group(&pld->dev->kobj, &pld_attr_group);
 419         if (ret)
 420                 return ret;
 421
 422         ret = kempld_register_cells(pld);
 423         if (ret)
 424                 sysfs_remove_group(&pld->dev->kobj, &pld_attr_group);
 425
 426         return ret;
 427 }
 428
 429 #ifdef CONFIG_ACPI
 430 static int kempld_get_acpi_data(struct platform_device *pdev)
 431 {
 432         struct list_head resource_list;
 433         struct resource *resources;
 434         struct resource_entry *rentry;
 435         struct device *dev = &pdev->dev;
 436         struct acpi_device *acpi_dev = ACPI_COMPANION(dev);
 437         const struct kempld_platform_data *pdata;
 438         int ret;
 439         int count;
 440
 441         pdata = acpi_device_get_match_data(dev);
 442         ret = platform_device_add_data(pdev, pdata,
 443                                        sizeof(struct kempld_platform_data));
 444         if (ret)
 445                 return ret;
 446
 447         INIT_LIST_HEAD(&resource_list);
 448         ret = acpi_dev_get_resources(acpi_dev, &resource_list, NULL, NULL);
 449         if (ret < 0)
 450                 goto out;
 451
 452         count = ret;
 453
 454         if (count == 0) {
 455                 ret = platform_device_add_resources(pdev, pdata->ioresource, 1);
 456                 goto out;
 457         }
 458
 459         resources = devm_kcalloc(&acpi_dev->dev, count, sizeof(*resources),
 460                                  GFP_KERNEL);
 461         if (!resources) {
 462                 ret = -ENOMEM;
 463                 goto out;
 464         }
 465
 466         count = 0;
 467         list_for_each_entry(rentry, &resource_list, node) {
 468                 memcpy(&resources[count], rentry->res,
 469                        sizeof(*resources));
 470                 count++;
 471         }
 472         ret = platform_device_add_resources(pdev, resources, count);
 473
 474 out:
 475         acpi_dev_free_resource_list(&resource_list);
 476
 477         return ret;
 478 }
 479 #else
 480 static int kempld_get_acpi_data(struct platform_device *pdev)
 481 {
 482         return -ENODEV;
 483 }
 484 #endif /* CONFIG_ACPI */
 485
 486 static int kempld_probe(struct platform_device *pdev)
 487 {
 488         const struct kempld_platform_data *pdata;
 489         struct device *dev = &pdev->dev;
 490         struct kempld_device_data *pld;
 491         struct resource *ioport;
 492         int ret;
 493
 494         if (kempld_pdev == NULL) {
 495                 /*
 496                  * No kempld_pdev device has been registered in kempld_init,
 497                  * so we seem to be probing an ACPI platform device.
 498                  */
 499                 ret = kempld_get_acpi_data(pdev);
 500                 if (ret)
 501                         return ret;
 502         } else if (kempld_pdev != pdev) {
 503                 /*
 504                  * The platform device we are probing is not the one we
 505                  * registered in kempld_init using the DMI table, so this one
 506                  * comes from ACPI.
 507                  * As we can only probe one - abort here and use the DMI
 508                  * based one instead.
 509                  */
 510                 dev_notice(dev, "platform device exists - not using ACPI\n");
 511                 return -ENODEV;
 512         }
 513         pdata = dev_get_platdata(dev);
 514
 515         pld = devm_kzalloc(dev, sizeof(*pld), GFP_KERNEL);
 516         if (!pld)
 517                 return -ENOMEM;
 518
 519         ioport = platform_get_resource(pdev, IORESOURCE_IO, 0);
 520         if (!ioport)
 521                 return -EINVAL;
 522
 523         pld->io_base = devm_ioport_map(dev, ioport->start,
 524                                         resource_size(ioport));
 525         if (!pld->io_base)
 526                 return -ENOMEM;
 527
 528         pld->io_index = pld->io_base;
 529         pld->io_data = pld->io_base + 1;
 530         pld->pld_clock = pdata->pld_clock;
 531         pld->dev = dev;
 532
 533         mutex_init(&pld->lock);
 534         platform_set_drvdata(pdev, pld);
 535
 536         return kempld_detect_device(pld);
 537 }
 538
 539 static int kempld_remove(struct platform_device *pdev)
 540 {
 541         struct kempld_device_data *pld = platform_get_drvdata(pdev);
 542         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 543
 544         sysfs_remove_group(&pld->dev->kobj, &pld_attr_group);
 545
 546         mfd_remove_devices(&pdev->dev);
 547         pdata->release_hardware_mutex(pld);
 548
 549         return 0;
 550 }
 551
 552 #ifdef CONFIG_ACPI
 553 static const struct acpi_device_id kempld_acpi_table[] = {
 554         { "KEM0000", (kernel_ulong_t)&kempld_platform_data_generic },
 555         { "KEM0001", (kernel_ulong_t)&kempld_platform_data_generic },
 556         {}
 557 };
 558 MODULE_DEVICE_TABLE(acpi, kempld_acpi_table);
 559 #endif
 560
 561 static struct platform_driver kempld_driver = {
 562         .driver         = {
 563                 .name   = "kempld",
 564                 .acpi_match_table = ACPI_PTR(kempld_acpi_table),
 565         },
 566         .probe          = kempld_probe,
 567         .remove         = kempld_remove,
 568 };
 569
 570 static const struct dmi_system_id kempld_dmi_table[] __initconst = {
 571         {
 572                 .ident = "BBD6",
 573                 .matches = {
 574                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 575                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bBD"),
 576                 },
 577                 .driver_data = (void *)&kempld_platform_data_generic,
 578                 .callback = kempld_create_platform_device,
 579         }, {
 580                 .ident = "BBL6",
 581                 .matches = {
 582                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 583                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bBL6"),
 584                 },
 585                 .driver_data = (void *)&kempld_platform_data_generic,
 586                 .callback = kempld_create_platform_device,
 587         }, {
 588                 .ident = "BDV7",
 589                 .matches = {
 590                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 591                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bDV7"),
 592                 },
 593                 .driver_data = (void *)&kempld_platform_data_generic,
 594                 .callback = kempld_create_platform_device,
 595         }, {
 596                 .ident = "BHL6",
 597                 .matches = {
 598                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 599                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bHL6"),
 600                 },
 601                 .driver_data = (void *)&kempld_platform_data_generic,
 602                 .callback = kempld_create_platform_device,
 603         }, {
 604                 .ident = "BKL6",
 605                 .matches = {
 606                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 607                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bKL6"),
 608                 },
 609                 .driver_data = (void *)&kempld_platform_data_generic,
 610                 .callback = kempld_create_platform_device,
 611         }, {
 612                 .ident = "BSL6",
 613                 .matches = {
 614                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 615                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bSL6"),
 616                 },
 617                 .driver_data = (void *)&kempld_platform_data_generic,
 618                 .callback = kempld_create_platform_device,
 619         }, {
 620                 .ident = "CAL6",
 621                 .matches = {
 622                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 623                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cAL"),
 624                 },
 625                 .driver_data = (void *)&kempld_platform_data_generic,
 626                 .callback = kempld_create_platform_device,
 627         }, {
 628                 .ident = "CBL6",
 629                 .matches = {
 630                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 631                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cBL6"),
 632                 },
 633                 .driver_data = (void *)&kempld_platform_data_generic,
 634                 .callback = kempld_create_platform_device,
 635         }, {
 636                 .ident = "CBW6",
 637                 .matches = {
 638                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 639                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cBW6"),
 640                 },
 641                 .driver_data = (void *)&kempld_platform_data_generic,
 642                 .callback = kempld_create_platform_device,
 643         }, {
 644                 .ident = "CCR2",
 645                 .matches = {
 646                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 647                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP2"),
 648                 },
 649                 .driver_data = (void *)&kempld_platform_data_generic,
 650                 .callback = kempld_create_platform_device,
 651         }, {
 652                 .ident = "CCR6",
 653                 .matches = {
 654                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 655                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP6"),
 656                 },
 657                 .driver_data = (void *)&kempld_platform_data_generic,
 658                 .callback = kempld_create_platform_device,
 659         }, {
 660                 .ident = "CDV7",
 661                 .matches = {
 662                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 663                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cDV7"),
 664                 },
 665                 .driver_data = (void *)&kempld_platform_data_generic,
 666                 .callback = kempld_create_platform_device,
 667         }, {
 668                 .ident = "CHL6",
 669                 .matches = {
 670                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 671                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cHL6"),
 672                 },
 673                 .driver_data = (void *)&kempld_platform_data_generic,
 674                 .callback = kempld_create_platform_device,
 675         }, {
 676                 .ident = "CHR2",
 677                 .matches = {
 678                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 679                         DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T2"),
 680                 },
 681                 .driver_data = (void *)&kempld_platform_data_generic,
 682                 .callback = kempld_create_platform_device,
 683         }, {
 684                 .ident = "CHR2",
 685                 .matches = {
 686                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 687                         DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T2"),
 688                 },
 689                 .driver_data = (void *)&kempld_platform_data_generic,
 690                 .callback = kempld_create_platform_device,
 691         }, {
 692                 .ident = "CHR2",
 693                 .matches = {
 694                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 695                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC2"),
 696                 },
 697                 .driver_data = (void *)&kempld_platform_data_generic,
 698                 .callback = kempld_create_platform_device,
 699         }, {
 700                 .ident = "CHR6",
 701                 .matches = {
 702                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 703                         DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T6"),
 704                 },
 705                 .driver_data = (void *)&kempld_platform_data_generic,
 706                 .callback = kempld_create_platform_device,
 707         }, {
 708                 .ident = "CHR6",
 709                 .matches = {
 710                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 711                         DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T6"),
 712                 },
 713                 .driver_data = (void *)&kempld_platform_data_generic,
 714                 .callback = kempld_create_platform_device,
 715         }, {
 716                 .ident = "CHR6",
 717                 .matches = {
 718                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 719                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC6"),
 720                 },
 721                 .driver_data = (void *)&kempld_platform_data_generic,
 722                 .callback = kempld_create_platform_device,
 723         }, {
 724                 .ident = "CKL6",
 725                 .matches = {
 726                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 727                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cKL6"),
 728                 },
 729                 .driver_data = (void *)&kempld_platform_data_generic,
 730                 .callback = kempld_create_platform_device,
 731         }, {
 732                 .ident = "CNTG",
 733                 .matches = {
 734                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 735                         DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-PC"),
 736                 },
 737                 .driver_data = (void *)&kempld_platform_data_generic,
 738                 .callback = kempld_create_platform_device,
 739         }, {
 740                 .ident = "CNTG",
 741                 .matches = {
 742                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 743                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bPC2"),
 744                 },
 745                 .driver_data = (void *)&kempld_platform_data_generic,
 746                 .callback = kempld_create_platform_device,
 747         }, {
 748                 .ident = "CNTX",
 749                 .matches = {
 750                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 751                         DMI_MATCH(DMI_BOARD_NAME, "PXT"),
 752                 },
 753                 .driver_data = (void *)&kempld_platform_data_generic,
 754                 .callback = kempld_create_platform_device,
 755         }, {
 756                 .ident = "CSL6",
 757                 .matches = {
 758                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 759                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cSL6"),
 760                 },
 761                 .driver_data = (void *)&kempld_platform_data_generic,
 762                 .callback = kempld_create_platform_device,
 763         }, {
 764                 .ident = "CVV6",
 765                 .matches = {
 766                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 767                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cBT"),
 768                 },
 769                 .driver_data = (void *)&kempld_platform_data_generic,
 770                 .callback = kempld_create_platform_device,
 771         }, {
 772                 .ident = "FRI2",
 773                 .matches = {
 774                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 775                         DMI_MATCH(DMI_BIOS_VERSION, "FRI2"),
 776                 },
 777                 .driver_data = (void *)&kempld_platform_data_generic,
 778                 .callback = kempld_create_platform_device,
 779         }, {
 780                 .ident = "FRI2",
 781                 .matches = {
 782                         DMI_MATCH(DMI_PRODUCT_NAME, "Fish River Island II"),
 783                 },
 784                 .driver_data = (void *)&kempld_platform_data_generic,
 785                 .callback = kempld_create_platform_device,
 786         }, {
 787                 .ident = "A203",
 788                 .matches = {
 789                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 790                         DMI_MATCH(DMI_BOARD_NAME, "KBox A-203"),
 791                 },
 792                 .driver_data = (void *)&kempld_platform_data_generic,
 793                 .callback = kempld_create_platform_device,
 794         }, {
 795                 .ident = "M4A1",
 796                 .matches = {
 797                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 798                         DMI_MATCH(DMI_BOARD_NAME, "COMe-m4AL"),
 799                 },
 800                 .driver_data = (void *)&kempld_platform_data_generic,
 801                 .callback = kempld_create_platform_device,
 802         }, {
 803                 .ident = "MAL1",
 804                 .matches = {
 805                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 806                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mAL10"),
 807                 },
 808                 .driver_data = (void *)&kempld_platform_data_generic,
 809                 .callback = kempld_create_platform_device,
 810         }, {
 811                 .ident = "MAPL",
 812                 .matches = {
 813                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 814                         DMI_MATCH(DMI_BOARD_NAME, "mITX-APL"),
 815                 },
 816                 .driver_data = (void *)&kempld_platform_data_generic,
 817                 .callback = kempld_create_platform_device,
 818         }, {
 819                 .ident = "MBR1",
 820                 .matches = {
 821                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 822                         DMI_MATCH(DMI_BOARD_NAME, "ETX-OH"),
 823                 },
 824                 .driver_data = (void *)&kempld_platform_data_generic,
 825                 .callback = kempld_create_platform_device,
 826         }, {
 827                 .ident = "MVV1",
 828                 .matches = {
 829                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 830                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mBT"),
 831                 },
 832                 .driver_data = (void *)&kempld_platform_data_generic,
 833                 .callback = kempld_create_platform_device,
 834         }, {
 835                 .ident = "NTC1",
 836                 .matches = {
 837                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 838                         DMI_MATCH(DMI_BOARD_NAME, "nanoETXexpress-TT"),
 839                 },
 840                 .driver_data = (void *)&kempld_platform_data_generic,
 841                 .callback = kempld_create_platform_device,
 842         }, {
 843                 .ident = "NTC1",
 844                 .matches = {
 845                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 846                         DMI_MATCH(DMI_BOARD_NAME, "nETXe-TT"),
 847                 },
 848                 .driver_data = (void *)&kempld_platform_data_generic,
 849                 .callback = kempld_create_platform_device,
 850         }, {
 851                 .ident = "NTC1",
 852                 .matches = {
 853                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 854                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mTT"),
 855                 },
 856                 .driver_data = (void *)&kempld_platform_data_generic,
 857                 .callback = kempld_create_platform_device,
 858         }, {
 859                 .ident = "NUP1",
 860                 .matches = {
 861                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 862                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mCT"),
 863                 },
 864                 .driver_data = (void *)&kempld_platform_data_generic,
 865                 .callback = kempld_create_platform_device,
 866         }, {
 867                 .ident = "PAPL",
 868                 .matches = {
 869                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 870                         DMI_MATCH(DMI_BOARD_NAME, "pITX-APL"),
 871                 },
 872                 .driver_data = (void *)&kempld_platform_data_generic,
 873                 .callback = kempld_create_platform_device,
 874         }, {
 875                 .ident = "SXAL",
 876                 .matches = {
 877                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 878                         DMI_MATCH(DMI_BOARD_NAME, "SMARC-sXAL"),
 879                 },
 880                 .driver_data = (void *)&kempld_platform_data_generic,
 881                 .callback = kempld_create_platform_device,
 882         }, {
 883                 .ident = "SXAL4",
 884                 .matches = {
 885                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 886                         DMI_MATCH(DMI_BOARD_NAME, "SMARC-sXA4"),
 887                 },
 888                 .driver_data = (void *)&kempld_platform_data_generic,
 889                 .callback = kempld_create_platform_device,
 890         }, {
 891                 .ident = "UNP1",
 892                 .matches = {
 893                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 894                         DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-DC"),
 895                 },
 896                 .driver_data = (void *)&kempld_platform_data_generic,
 897                 .callback = kempld_create_platform_device,
 898         }, {
 899                 .ident = "UNP1",
 900                 .matches = {
 901                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 902                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cDC2"),
 903                 },
 904                 .driver_data = (void *)&kempld_platform_data_generic,
 905                 .callback = kempld_create_platform_device,
 906         }, {
 907                 .ident = "UNTG",
 908                 .matches = {
 909                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 910                         DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-PC"),
 911                 },
 912                 .driver_data = (void *)&kempld_platform_data_generic,
 913                 .callback = kempld_create_platform_device,
 914         }, {
 915                 .ident = "UNTG",
 916                 .matches = {
 917                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 918                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cPC2"),
 919                 },
 920                 .driver_data = (void *)&kempld_platform_data_generic,
 921                 .callback = kempld_create_platform_device,
 922         }, {
 923                 .ident = "UUP6",
 924                 .matches = {
 925                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 926                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cCT6"),
 927                 },
 928                 .driver_data = (void *)&kempld_platform_data_generic,
 929                 .callback = kempld_create_platform_device,
 930         }, {
 931                 .ident = "UTH6",
 932                 .matches = {
 933                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 934                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cTH6"),
 935                 },
 936                 .driver_data = (void *)&kempld_platform_data_generic,
 937                 .callback = kempld_create_platform_device,
 938         }, {
 939                 .ident = "Q7AL",
 940                 .matches = {
 941                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 942                         DMI_MATCH(DMI_BOARD_NAME, "Qseven-Q7AL"),
 943                 },
 944                 .driver_data = (void *)&kempld_platform_data_generic,
 945                 .callback = kempld_create_platform_device,
 946         },
 947         {}
 948 };
 949 MODULE_DEVICE_TABLE(dmi, kempld_dmi_table);
 950
 951 static int __init kempld_init(void)
 952 {
 953         const struct dmi_system_id *id;
 954
 955         if (force_device_id[0]) {
 956                 for (id = kempld_dmi_table;
 957                      id->matches[0].slot != DMI_NONE; id++)
 958                         if (strstr(id->ident, force_device_id))
 959                                 if (id->callback && !id->callback(id))
 960                                         break;
 961                 if (id->matches[0].slot == DMI_NONE)
 962                         return -ENODEV;
 963         } else {
 964                 dmi_check_system(kempld_dmi_table);
 965         }
 966
 967         return platform_driver_register(&kempld_driver);
 968 }
 969
 970 static void __exit kempld_exit(void)
 971 {
 972         if (kempld_pdev)
 973                 platform_device_unregister(kempld_pdev);
 974
 975         platform_driver_unregister(&kempld_driver);
 976 }
 977
 978 module_init(kempld_init);
 979 module_exit(kempld_exit);
 980
 981 MODULE_DESCRIPTION("KEM PLD Core Driver");
 982 MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>");
 983 MODULE_LICENSE("GPL");
 984 MODULE_ALIAS("platform:kempld-core");