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 kempld_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 kempld_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 kempld_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(pld_version, S_IRUGO, kempld_version_show, NULL);
 373 static DEVICE_ATTR(pld_specification, S_IRUGO, kempld_specification_show,
 374                    NULL);
 375 static DEVICE_ATTR(pld_type, S_IRUGO, kempld_type_show, NULL);
 376
 377 static struct attribute *pld_attributes[] = {
 378         &dev_attr_pld_version.attr,
 379         &dev_attr_pld_specification.attr,
 380         &dev_attr_pld_type.attr,
 381         NULL
 382 };
 383
 384 static const struct attribute_group pld_attr_group = {
 385         .attrs = pld_attributes,
 386 };
 387
 388 static int kempld_detect_device(struct kempld_device_data *pld)
 389 {
 390         u8 index_reg;
 391         int ret;
 392
 393         mutex_lock(&pld->lock);
 394
 395         /* Check for empty IO space */
 396         index_reg = ioread8(pld->io_index);
 397         if (index_reg == 0xff && ioread8(pld->io_data) == 0xff) {
 398                 mutex_unlock(&pld->lock);
 399                 return -ENODEV;
 400         }
 401
 402         /* Release hardware mutex if acquired */
 403         if (!(index_reg & KEMPLD_MUTEX_KEY)) {
 404                 iowrite8(KEMPLD_MUTEX_KEY, pld->io_index);
 405                 /* PXT and COMe-cPC2 boards may require a second release */
 406                 iowrite8(KEMPLD_MUTEX_KEY, pld->io_index);
 407         }
 408
 409         mutex_unlock(&pld->lock);
 410
 411         ret = kempld_get_info(pld);
 412         if (ret)
 413                 return ret;
 414
 415         dev_info(pld->dev, "Found Kontron PLD - %s (%s), spec %d.%d\n",
 416                  pld->info.version, kempld_get_type_string(pld),
 417                  pld->info.spec_major, pld->info.spec_minor);
 418
 419         ret = sysfs_create_group(&pld->dev->kobj, &pld_attr_group);
 420         if (ret)
 421                 return ret;
 422
 423         ret = kempld_register_cells(pld);
 424         if (ret)
 425                 sysfs_remove_group(&pld->dev->kobj, &pld_attr_group);
 426
 427         return ret;
 428 }
 429
 430 #ifdef CONFIG_ACPI
 431 static int kempld_get_acpi_data(struct platform_device *pdev)
 432 {
 433         struct list_head resource_list;
 434         struct resource *resources;
 435         struct resource_entry *rentry;
 436         struct device *dev = &pdev->dev;
 437         struct acpi_device *acpi_dev = ACPI_COMPANION(dev);
 438         const struct kempld_platform_data *pdata;
 439         int ret;
 440         int count;
 441
 442         pdata = acpi_device_get_match_data(dev);
 443         ret = platform_device_add_data(pdev, pdata,
 444                                        sizeof(struct kempld_platform_data));
 445         if (ret)
 446                 return ret;
 447
 448         INIT_LIST_HEAD(&resource_list);
 449         ret = acpi_dev_get_resources(acpi_dev, &resource_list, NULL, NULL);
 450         if (ret < 0)
 451                 goto out;
 452
 453         count = ret;
 454
 455         if (count == 0) {
 456                 ret = platform_device_add_resources(pdev, pdata->ioresource, 1);
 457                 goto out;
 458         }
 459
 460         resources = devm_kcalloc(&acpi_dev->dev, count, sizeof(*resources),
 461                                  GFP_KERNEL);
 462         if (!resources) {
 463                 ret = -ENOMEM;
 464                 goto out;
 465         }
 466
 467         count = 0;
 468         list_for_each_entry(rentry, &resource_list, node) {
 469                 memcpy(&resources[count], rentry->res,
 470                        sizeof(*resources));
 471                 count++;
 472         }
 473         ret = platform_device_add_resources(pdev, resources, count);
 474
 475 out:
 476         acpi_dev_free_resource_list(&resource_list);
 477
 478         return ret;
 479 }
 480 #else
 481 static int kempld_get_acpi_data(struct platform_device *pdev)
 482 {
 483         return -ENODEV;
 484 }
 485 #endif /* CONFIG_ACPI */
 486
 487 static int kempld_probe(struct platform_device *pdev)
 488 {
 489         const struct kempld_platform_data *pdata;
 490         struct device *dev = &pdev->dev;
 491         struct kempld_device_data *pld;
 492         struct resource *ioport;
 493         int ret;
 494
 495         if (kempld_pdev == NULL) {
 496                 /*
 497                  * No kempld_pdev device has been registered in kempld_init,
 498                  * so we seem to be probing an ACPI platform device.
 499                  */
 500                 ret = kempld_get_acpi_data(pdev);
 501                 if (ret)
 502                         return ret;
 503         } else if (kempld_pdev != pdev) {
 504                 /*
 505                  * The platform device we are probing is not the one we
 506                  * registered in kempld_init using the DMI table, so this one
 507                  * comes from ACPI.
 508                  * As we can only probe one - abort here and use the DMI
 509                  * based one instead.
 510                  */
 511                 dev_notice(dev, "platform device exists - not using ACPI\n");
 512                 return -ENODEV;
 513         }
 514         pdata = dev_get_platdata(dev);
 515
 516         pld = devm_kzalloc(dev, sizeof(*pld), GFP_KERNEL);
 517         if (!pld)
 518                 return -ENOMEM;
 519
 520         ioport = platform_get_resource(pdev, IORESOURCE_IO, 0);
 521         if (!ioport)
 522                 return -EINVAL;
 523
 524         pld->io_base = devm_ioport_map(dev, ioport->start,
 525                                         resource_size(ioport));
 526         if (!pld->io_base)
 527                 return -ENOMEM;
 528
 529         pld->io_index = pld->io_base;
 530         pld->io_data = pld->io_base + 1;
 531         pld->pld_clock = pdata->pld_clock;
 532         pld->dev = dev;
 533
 534         mutex_init(&pld->lock);
 535         platform_set_drvdata(pdev, pld);
 536
 537         return kempld_detect_device(pld);
 538 }
 539
 540 static int kempld_remove(struct platform_device *pdev)
 541 {
 542         struct kempld_device_data *pld = platform_get_drvdata(pdev);
 543         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 544
 545         sysfs_remove_group(&pld->dev->kobj, &pld_attr_group);
 546
 547         mfd_remove_devices(&pdev->dev);
 548         pdata->release_hardware_mutex(pld);
 549
 550         return 0;
 551 }
 552
 553 #ifdef CONFIG_ACPI
 554 static const struct acpi_device_id kempld_acpi_table[] = {
 555         { "KEM0000", (kernel_ulong_t)&kempld_platform_data_generic },
 556         { "KEM0001", (kernel_ulong_t)&kempld_platform_data_generic },
 557         {}
 558 };
 559 MODULE_DEVICE_TABLE(acpi, kempld_acpi_table);
 560 #endif
 561
 562 static struct platform_driver kempld_driver = {
 563         .driver         = {
 564                 .name   = "kempld",
 565                 .acpi_match_table = ACPI_PTR(kempld_acpi_table),
 566         },
 567         .probe          = kempld_probe,
 568         .remove         = kempld_remove,
 569 };
 570
 571 static const struct dmi_system_id kempld_dmi_table[] __initconst = {
 572         {
 573                 .ident = "BBD6",
 574                 .matches = {
 575                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 576                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bBD"),
 577                 },
 578                 .driver_data = (void *)&kempld_platform_data_generic,
 579                 .callback = kempld_create_platform_device,
 580         }, {
 581                 .ident = "BBL6",
 582                 .matches = {
 583                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 584                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bBL6"),
 585                 },
 586                 .driver_data = (void *)&kempld_platform_data_generic,
 587                 .callback = kempld_create_platform_device,
 588         }, {
 589                 .ident = "BDV7",
 590                 .matches = {
 591                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 592                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bDV7"),
 593                 },
 594                 .driver_data = (void *)&kempld_platform_data_generic,
 595                 .callback = kempld_create_platform_device,
 596         }, {
 597                 .ident = "BHL6",
 598                 .matches = {
 599                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 600                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bHL6"),
 601                 },
 602                 .driver_data = (void *)&kempld_platform_data_generic,
 603                 .callback = kempld_create_platform_device,
 604         }, {
 605                 .ident = "BKL6",
 606                 .matches = {
 607                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 608                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bKL6"),
 609                 },
 610                 .driver_data = (void *)&kempld_platform_data_generic,
 611                 .callback = kempld_create_platform_device,
 612         }, {
 613                 .ident = "BSL6",
 614                 .matches = {
 615                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 616                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bSL6"),
 617                 },
 618                 .driver_data = (void *)&kempld_platform_data_generic,
 619                 .callback = kempld_create_platform_device,
 620         }, {
 621                 .ident = "CAL6",
 622                 .matches = {
 623                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 624                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cAL"),
 625                 },
 626                 .driver_data = (void *)&kempld_platform_data_generic,
 627                 .callback = kempld_create_platform_device,
 628         }, {
 629                 .ident = "CBL6",
 630                 .matches = {
 631                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 632                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cBL6"),
 633                 },
 634                 .driver_data = (void *)&kempld_platform_data_generic,
 635                 .callback = kempld_create_platform_device,
 636         }, {
 637                 .ident = "CBW6",
 638                 .matches = {
 639                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 640                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cBW6"),
 641                 },
 642                 .driver_data = (void *)&kempld_platform_data_generic,
 643                 .callback = kempld_create_platform_device,
 644         }, {
 645                 .ident = "CCR2",
 646                 .matches = {
 647                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 648                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP2"),
 649                 },
 650                 .driver_data = (void *)&kempld_platform_data_generic,
 651                 .callback = kempld_create_platform_device,
 652         }, {
 653                 .ident = "CCR6",
 654                 .matches = {
 655                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 656                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP6"),
 657                 },
 658                 .driver_data = (void *)&kempld_platform_data_generic,
 659                 .callback = kempld_create_platform_device,
 660         }, {
 661                 .ident = "CDV7",
 662                 .matches = {
 663                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 664                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cDV7"),
 665                 },
 666                 .driver_data = (void *)&kempld_platform_data_generic,
 667                 .callback = kempld_create_platform_device,
 668         }, {
 669                 .ident = "CHL6",
 670                 .matches = {
 671                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 672                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cHL6"),
 673                 },
 674                 .driver_data = (void *)&kempld_platform_data_generic,
 675                 .callback = kempld_create_platform_device,
 676         }, {
 677                 .ident = "CHR2",
 678                 .matches = {
 679                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 680                         DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T2"),
 681                 },
 682                 .driver_data = (void *)&kempld_platform_data_generic,
 683                 .callback = kempld_create_platform_device,
 684         }, {
 685                 .ident = "CHR2",
 686                 .matches = {
 687                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 688                         DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T2"),
 689                 },
 690                 .driver_data = (void *)&kempld_platform_data_generic,
 691                 .callback = kempld_create_platform_device,
 692         }, {
 693                 .ident = "CHR2",
 694                 .matches = {
 695                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 696                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC2"),
 697                 },
 698                 .driver_data = (void *)&kempld_platform_data_generic,
 699                 .callback = kempld_create_platform_device,
 700         }, {
 701                 .ident = "CHR6",
 702                 .matches = {
 703                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 704                         DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T6"),
 705                 },
 706                 .driver_data = (void *)&kempld_platform_data_generic,
 707                 .callback = kempld_create_platform_device,
 708         }, {
 709                 .ident = "CHR6",
 710                 .matches = {
 711                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 712                         DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T6"),
 713                 },
 714                 .driver_data = (void *)&kempld_platform_data_generic,
 715                 .callback = kempld_create_platform_device,
 716         }, {
 717                 .ident = "CHR6",
 718                 .matches = {
 719                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 720                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC6"),
 721                 },
 722                 .driver_data = (void *)&kempld_platform_data_generic,
 723                 .callback = kempld_create_platform_device,
 724         }, {
 725                 .ident = "CKL6",
 726                 .matches = {
 727                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 728                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cKL6"),
 729                 },
 730                 .driver_data = (void *)&kempld_platform_data_generic,
 731                 .callback = kempld_create_platform_device,
 732         }, {
 733                 .ident = "CNTG",
 734                 .matches = {
 735                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 736                         DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-PC"),
 737                 },
 738                 .driver_data = (void *)&kempld_platform_data_generic,
 739                 .callback = kempld_create_platform_device,
 740         }, {
 741                 .ident = "CNTG",
 742                 .matches = {
 743                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 744                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bPC2"),
 745                 },
 746                 .driver_data = (void *)&kempld_platform_data_generic,
 747                 .callback = kempld_create_platform_device,
 748         }, {
 749                 .ident = "CNTX",
 750                 .matches = {
 751                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 752                         DMI_MATCH(DMI_BOARD_NAME, "PXT"),
 753                 },
 754                 .driver_data = (void *)&kempld_platform_data_generic,
 755                 .callback = kempld_create_platform_device,
 756         }, {
 757                 .ident = "CSL6",
 758                 .matches = {
 759                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 760                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cSL6"),
 761                 },
 762                 .driver_data = (void *)&kempld_platform_data_generic,
 763                 .callback = kempld_create_platform_device,
 764         }, {
 765                 .ident = "CVV6",
 766                 .matches = {
 767                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 768                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cBT"),
 769                 },
 770                 .driver_data = (void *)&kempld_platform_data_generic,
 771                 .callback = kempld_create_platform_device,
 772         }, {
 773                 .ident = "FRI2",
 774                 .matches = {
 775                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 776                         DMI_MATCH(DMI_BIOS_VERSION, "FRI2"),
 777                 },
 778                 .driver_data = (void *)&kempld_platform_data_generic,
 779                 .callback = kempld_create_platform_device,
 780         }, {
 781                 .ident = "FRI2",
 782                 .matches = {
 783                         DMI_MATCH(DMI_PRODUCT_NAME, "Fish River Island II"),
 784                 },
 785                 .driver_data = (void *)&kempld_platform_data_generic,
 786                 .callback = kempld_create_platform_device,
 787         }, {
 788                 .ident = "A203",
 789                 .matches = {
 790                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 791                         DMI_MATCH(DMI_BOARD_NAME, "KBox A-203"),
 792                 },
 793                 .driver_data = (void *)&kempld_platform_data_generic,
 794                 .callback = kempld_create_platform_device,
 795         }, {
 796                 .ident = "M4A1",
 797                 .matches = {
 798                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 799                         DMI_MATCH(DMI_BOARD_NAME, "COMe-m4AL"),
 800                 },
 801                 .driver_data = (void *)&kempld_platform_data_generic,
 802                 .callback = kempld_create_platform_device,
 803         }, {
 804                 .ident = "MAL1",
 805                 .matches = {
 806                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 807                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mAL10"),
 808                 },
 809                 .driver_data = (void *)&kempld_platform_data_generic,
 810                 .callback = kempld_create_platform_device,
 811         }, {
 812                 .ident = "MAPL",
 813                 .matches = {
 814                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 815                         DMI_MATCH(DMI_BOARD_NAME, "mITX-APL"),
 816                 },
 817                 .driver_data = (void *)&kempld_platform_data_generic,
 818                 .callback = kempld_create_platform_device,
 819         }, {
 820                 .ident = "MBR1",
 821                 .matches = {
 822                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 823                         DMI_MATCH(DMI_BOARD_NAME, "ETX-OH"),
 824                 },
 825                 .driver_data = (void *)&kempld_platform_data_generic,
 826                 .callback = kempld_create_platform_device,
 827         }, {
 828                 .ident = "MVV1",
 829                 .matches = {
 830                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 831                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mBT"),
 832                 },
 833                 .driver_data = (void *)&kempld_platform_data_generic,
 834                 .callback = kempld_create_platform_device,
 835         }, {
 836                 .ident = "NTC1",
 837                 .matches = {
 838                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 839                         DMI_MATCH(DMI_BOARD_NAME, "nanoETXexpress-TT"),
 840                 },
 841                 .driver_data = (void *)&kempld_platform_data_generic,
 842                 .callback = kempld_create_platform_device,
 843         }, {
 844                 .ident = "NTC1",
 845                 .matches = {
 846                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 847                         DMI_MATCH(DMI_BOARD_NAME, "nETXe-TT"),
 848                 },
 849                 .driver_data = (void *)&kempld_platform_data_generic,
 850                 .callback = kempld_create_platform_device,
 851         }, {
 852                 .ident = "NTC1",
 853                 .matches = {
 854                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 855                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mTT"),
 856                 },
 857                 .driver_data = (void *)&kempld_platform_data_generic,
 858                 .callback = kempld_create_platform_device,
 859         }, {
 860                 .ident = "NUP1",
 861                 .matches = {
 862                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 863                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mCT"),
 864                 },
 865                 .driver_data = (void *)&kempld_platform_data_generic,
 866                 .callback = kempld_create_platform_device,
 867         }, {
 868                 .ident = "PAPL",
 869                 .matches = {
 870                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 871                         DMI_MATCH(DMI_BOARD_NAME, "pITX-APL"),
 872                 },
 873                 .driver_data = (void *)&kempld_platform_data_generic,
 874                 .callback = kempld_create_platform_device,
 875         }, {
 876                 .ident = "SXAL",
 877                 .matches = {
 878                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 879                         DMI_MATCH(DMI_BOARD_NAME, "SMARC-sXAL"),
 880                 },
 881                 .driver_data = (void *)&kempld_platform_data_generic,
 882                 .callback = kempld_create_platform_device,
 883         }, {
 884                 .ident = "SXAL4",
 885                 .matches = {
 886                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 887                         DMI_MATCH(DMI_BOARD_NAME, "SMARC-sXA4"),
 888                 },
 889                 .driver_data = (void *)&kempld_platform_data_generic,
 890                 .callback = kempld_create_platform_device,
 891         }, {
 892                 .ident = "UNP1",
 893                 .matches = {
 894                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 895                         DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-DC"),
 896                 },
 897                 .driver_data = (void *)&kempld_platform_data_generic,
 898                 .callback = kempld_create_platform_device,
 899         }, {
 900                 .ident = "UNP1",
 901                 .matches = {
 902                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 903                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cDC2"),
 904                 },
 905                 .driver_data = (void *)&kempld_platform_data_generic,
 906                 .callback = kempld_create_platform_device,
 907         }, {
 908                 .ident = "UNTG",
 909                 .matches = {
 910                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 911                         DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-PC"),
 912                 },
 913                 .driver_data = (void *)&kempld_platform_data_generic,
 914                 .callback = kempld_create_platform_device,
 915         }, {
 916                 .ident = "UNTG",
 917                 .matches = {
 918                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 919                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cPC2"),
 920                 },
 921                 .driver_data = (void *)&kempld_platform_data_generic,
 922                 .callback = kempld_create_platform_device,
 923         }, {
 924                 .ident = "UUP6",
 925                 .matches = {
 926                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 927                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cCT6"),
 928                 },
 929                 .driver_data = (void *)&kempld_platform_data_generic,
 930                 .callback = kempld_create_platform_device,
 931         }, {
 932                 .ident = "UTH6",
 933                 .matches = {
 934                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 935                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cTH6"),
 936                 },
 937                 .driver_data = (void *)&kempld_platform_data_generic,
 938                 .callback = kempld_create_platform_device,
 939         }, {
 940                 .ident = "Q7AL",
 941                 .matches = {
 942                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 943                         DMI_MATCH(DMI_BOARD_NAME, "Qseven-Q7AL"),
 944                 },
 945                 .driver_data = (void *)&kempld_platform_data_generic,
 946                 .callback = kempld_create_platform_device,
 947         },
 948         {}
 949 };
 950 MODULE_DEVICE_TABLE(dmi, kempld_dmi_table);
 951
 952 static int __init kempld_init(void)
 953 {
 954         const struct dmi_system_id *id;
 955
 956         if (force_device_id[0]) {
 957                 for (id = kempld_dmi_table;
 958                      id->matches[0].slot != DMI_NONE; id++)
 959                         if (strstr(id->ident, force_device_id))
 960                                 if (id->callback && !id->callback(id))
 961                                         break;
 962                 if (id->matches[0].slot == DMI_NONE)
 963                         return -ENODEV;
 964         } else {
 965                 dmi_check_system(kempld_dmi_table);
 966         }
 967
 968         return platform_driver_register(&kempld_driver);
 969 }
 970
 971 static void __exit kempld_exit(void)
 972 {
 973         if (kempld_pdev)
 974                 platform_device_unregister(kempld_pdev);
 975
 976         platform_driver_unregister(&kempld_driver);
 977 }
 978
 979 module_init(kempld_init);
 980 module_exit(kempld_exit);
 981
 982 MODULE_DESCRIPTION("KEM PLD Core Driver");
 983 MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>");
 984 MODULE_LICENSE("GPL");
 985 MODULE_ALIAS("platform:kempld-core");