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
  17 #define MAX_ID_LEN 4
  18 static char force_device_id[MAX_ID_LEN + 1] = "";
  19 module_param_string(force_device_id, force_device_id,
  20                     sizeof(force_device_id), 0);
  21 MODULE_PARM_DESC(force_device_id, "Override detected product");
  22
  23 /*
  24  * Get hardware mutex to block firmware from accessing the pld.
  25  * It is possible for the firmware may hold the mutex for an extended length of
  26  * time. This function will block until access has been granted.
  27  */
  28 static void kempld_get_hardware_mutex(struct kempld_device_data *pld)
  29 {
  30         /* The mutex bit will read 1 until access has been granted */
  31         while (ioread8(pld->io_index) & KEMPLD_MUTEX_KEY)
  32                 usleep_range(1000, 3000);
  33 }
  34
  35 static void kempld_release_hardware_mutex(struct kempld_device_data *pld)
  36 {
  37         /* The harware mutex is released when 1 is written to the mutex bit. */
  38         iowrite8(KEMPLD_MUTEX_KEY, pld->io_index);
  39 }
  40
  41 static int kempld_get_info_generic(struct kempld_device_data *pld)
  42 {
  43         u16 version;
  44         u8 spec;
  45
  46         kempld_get_mutex(pld);
  47
  48         version = kempld_read16(pld, KEMPLD_VERSION);
  49         spec = kempld_read8(pld, KEMPLD_SPEC);
  50         pld->info.buildnr = kempld_read16(pld, KEMPLD_BUILDNR);
  51
  52         pld->info.minor = KEMPLD_VERSION_GET_MINOR(version);
  53         pld->info.major = KEMPLD_VERSION_GET_MAJOR(version);
  54         pld->info.number = KEMPLD_VERSION_GET_NUMBER(version);
  55         pld->info.type = KEMPLD_VERSION_GET_TYPE(version);
  56
  57         if (spec == 0xff) {
  58                 pld->info.spec_minor = 0;
  59                 pld->info.spec_major = 1;
  60         } else {
  61                 pld->info.spec_minor = KEMPLD_SPEC_GET_MINOR(spec);
  62                 pld->info.spec_major = KEMPLD_SPEC_GET_MAJOR(spec);
  63         }
  64
  65         if (pld->info.spec_major > 0)
  66                 pld->feature_mask = kempld_read16(pld, KEMPLD_FEATURE);
  67         else
  68                 pld->feature_mask = 0;
  69
  70         kempld_release_mutex(pld);
  71
  72         return 0;
  73 }
  74
  75 enum kempld_cells {
  76         KEMPLD_I2C = 0,
  77         KEMPLD_WDT,
  78         KEMPLD_GPIO,
  79         KEMPLD_UART,
  80 };
  81
  82 static const char *kempld_dev_names[] = {
  83         [KEMPLD_I2C] = "kempld-i2c",
  84         [KEMPLD_WDT] = "kempld-wdt",
  85         [KEMPLD_GPIO] = "kempld-gpio",
  86         [KEMPLD_UART] = "kempld-uart",
  87 };
  88
  89 #define KEMPLD_MAX_DEVS ARRAY_SIZE(kempld_dev_names)
  90
  91 static int kempld_register_cells_generic(struct kempld_device_data *pld)
  92 {
  93         struct mfd_cell devs[KEMPLD_MAX_DEVS] = {};
  94         int i = 0;
  95
  96         if (pld->feature_mask & KEMPLD_FEATURE_BIT_I2C)
  97                 devs[i++].name = kempld_dev_names[KEMPLD_I2C];
  98
  99         if (pld->feature_mask & KEMPLD_FEATURE_BIT_WATCHDOG)
 100                 devs[i++].name = kempld_dev_names[KEMPLD_WDT];
 101
 102         if (pld->feature_mask & KEMPLD_FEATURE_BIT_GPIO)
 103                 devs[i++].name = kempld_dev_names[KEMPLD_GPIO];
 104
 105         if (pld->feature_mask & KEMPLD_FEATURE_MASK_UART)
 106                 devs[i++].name = kempld_dev_names[KEMPLD_UART];
 107
 108         return mfd_add_devices(pld->dev, -1, devs, i, NULL, 0, NULL);
 109 }
 110
 111 static struct resource kempld_ioresource = {
 112         .start  = KEMPLD_IOINDEX,
 113         .end    = KEMPLD_IODATA,
 114         .flags  = IORESOURCE_IO,
 115 };
 116
 117 static const struct kempld_platform_data kempld_platform_data_generic = {
 118         .pld_clock              = KEMPLD_CLK,
 119         .ioresource             = &kempld_ioresource,
 120         .get_hardware_mutex     = kempld_get_hardware_mutex,
 121         .release_hardware_mutex = kempld_release_hardware_mutex,
 122         .get_info               = kempld_get_info_generic,
 123         .register_cells         = kempld_register_cells_generic,
 124 };
 125
 126 static struct platform_device *kempld_pdev;
 127
 128 static int kempld_create_platform_device(const struct dmi_system_id *id)
 129 {
 130         const struct kempld_platform_data *pdata = id->driver_data;
 131         int ret;
 132
 133         kempld_pdev = platform_device_alloc("kempld", -1);
 134         if (!kempld_pdev)
 135                 return -ENOMEM;
 136
 137         ret = platform_device_add_data(kempld_pdev, pdata, sizeof(*pdata));
 138         if (ret)
 139                 goto err;
 140
 141         ret = platform_device_add_resources(kempld_pdev, pdata->ioresource, 1);
 142         if (ret)
 143                 goto err;
 144
 145         ret = platform_device_add(kempld_pdev);
 146         if (ret)
 147                 goto err;
 148
 149         return 0;
 150 err:
 151         platform_device_put(kempld_pdev);
 152         return ret;
 153 }
 154
 155 /**
 156  * kempld_read8 - read 8 bit register
 157  * @pld: kempld_device_data structure describing the PLD
 158  * @index: register index on the chip
 159  *
 160  * kempld_get_mutex must be called prior to calling this function.
 161  */
 162 u8 kempld_read8(struct kempld_device_data *pld, u8 index)
 163 {
 164         iowrite8(index, pld->io_index);
 165         return ioread8(pld->io_data);
 166 }
 167 EXPORT_SYMBOL_GPL(kempld_read8);
 168
 169 /**
 170  * kempld_write8 - write 8 bit register
 171  * @pld: kempld_device_data structure describing the PLD
 172  * @index: register index on the chip
 173  * @data: new register value
 174  *
 175  * kempld_get_mutex must be called prior to calling this function.
 176  */
 177 void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data)
 178 {
 179         iowrite8(index, pld->io_index);
 180         iowrite8(data, pld->io_data);
 181 }
 182 EXPORT_SYMBOL_GPL(kempld_write8);
 183
 184 /**
 185  * kempld_read16 - read 16 bit register
 186  * @pld: kempld_device_data structure describing the PLD
 187  * @index: register index on the chip
 188  *
 189  * kempld_get_mutex must be called prior to calling this function.
 190  */
 191 u16 kempld_read16(struct kempld_device_data *pld, u8 index)
 192 {
 193         return kempld_read8(pld, index) | kempld_read8(pld, index + 1) << 8;
 194 }
 195 EXPORT_SYMBOL_GPL(kempld_read16);
 196
 197 /**
 198  * kempld_write16 - write 16 bit register
 199  * @pld: kempld_device_data structure describing the PLD
 200  * @index: register index on the chip
 201  * @data: new register value
 202  *
 203  * kempld_get_mutex must be called prior to calling this function.
 204  */
 205 void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data)
 206 {
 207         kempld_write8(pld, index, (u8)data);
 208         kempld_write8(pld, index + 1, (u8)(data >> 8));
 209 }
 210 EXPORT_SYMBOL_GPL(kempld_write16);
 211
 212 /**
 213  * kempld_read32 - read 32 bit register
 214  * @pld: kempld_device_data structure describing the PLD
 215  * @index: register index on the chip
 216  *
 217  * kempld_get_mutex must be called prior to calling this function.
 218  */
 219 u32 kempld_read32(struct kempld_device_data *pld, u8 index)
 220 {
 221         return kempld_read16(pld, index) | kempld_read16(pld, index + 2) << 16;
 222 }
 223 EXPORT_SYMBOL_GPL(kempld_read32);
 224
 225 /**
 226  * kempld_write32 - write 32 bit register
 227  * @pld: kempld_device_data structure describing the PLD
 228  * @index: register index on the chip
 229  * @data: new register value
 230  *
 231  * kempld_get_mutex must be called prior to calling this function.
 232  */
 233 void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data)
 234 {
 235         kempld_write16(pld, index, (u16)data);
 236         kempld_write16(pld, index + 2, (u16)(data >> 16));
 237 }
 238 EXPORT_SYMBOL_GPL(kempld_write32);
 239
 240 /**
 241  * kempld_get_mutex - acquire PLD mutex
 242  * @pld: kempld_device_data structure describing the PLD
 243  */
 244 void kempld_get_mutex(struct kempld_device_data *pld)
 245 {
 246         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 247
 248         mutex_lock(&pld->lock);
 249         pdata->get_hardware_mutex(pld);
 250 }
 251 EXPORT_SYMBOL_GPL(kempld_get_mutex);
 252
 253 /**
 254  * kempld_release_mutex - release PLD mutex
 255  * @pld: kempld_device_data structure describing the PLD
 256  */
 257 void kempld_release_mutex(struct kempld_device_data *pld)
 258 {
 259         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 260
 261         pdata->release_hardware_mutex(pld);
 262         mutex_unlock(&pld->lock);
 263 }
 264 EXPORT_SYMBOL_GPL(kempld_release_mutex);
 265
 266 /**
 267  * kempld_get_info - update device specific information
 268  * @pld: kempld_device_data structure describing the PLD
 269  *
 270  * This function calls the configured board specific kempld_get_info_XXXX
 271  * function which is responsible for gathering information about the specific
 272  * hardware. The information is then stored within the pld structure.
 273  */
 274 static int kempld_get_info(struct kempld_device_data *pld)
 275 {
 276         int ret;
 277         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 278         char major, minor;
 279
 280         ret = pdata->get_info(pld);
 281         if (ret)
 282                 return ret;
 283
 284         /* The Kontron PLD firmware version string has the following format:
 285          * Pwxy.zzzz
 286          *   P:    Fixed
 287          *   w:    PLD number    - 1 hex digit
 288          *   x:    Major version - 1 alphanumerical digit (0-9A-V)
 289          *   y:    Minor version - 1 alphanumerical digit (0-9A-V)
 290          *   zzzz: Build number  - 4 zero padded hex digits */
 291
 292         if (pld->info.major < 10)
 293                 major = pld->info.major + '0';
 294         else
 295                 major = (pld->info.major - 10) + 'A';
 296         if (pld->info.minor < 10)
 297                 minor = pld->info.minor + '0';
 298         else
 299                 minor = (pld->info.minor - 10) + 'A';
 300
 301         ret = scnprintf(pld->info.version, sizeof(pld->info.version),
 302                         "P%X%c%c.%04X", pld->info.number, major, minor,
 303                         pld->info.buildnr);
 304         if (ret < 0)
 305                 return ret;
 306
 307         return 0;
 308 }
 309
 310 /*
 311  * kempld_register_cells - register cell drivers
 312  *
 313  * This function registers cell drivers for the detected hardware by calling
 314  * the configured kempld_register_cells_XXXX function which is responsible
 315  * to detect and register the needed cell drivers.
 316  */
 317 static int kempld_register_cells(struct kempld_device_data *pld)
 318 {
 319         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 320
 321         return pdata->register_cells(pld);
 322 }
 323
 324 static const char *kempld_get_type_string(struct kempld_device_data *pld)
 325 {
 326         const char *version_type;
 327
 328         switch (pld->info.type) {
 329         case 0:
 330                 version_type = "release";
 331                 break;
 332         case 1:
 333                 version_type = "debug";
 334                 break;
 335         case 2:
 336                 version_type = "custom";
 337                 break;
 338         default:
 339                 version_type = "unspecified";
 340                 break;
 341         }
 342
 343         return version_type;
 344 }
 345
 346 static ssize_t kempld_version_show(struct device *dev,
 347                 struct device_attribute *attr, char *buf)
 348 {
 349         struct kempld_device_data *pld = dev_get_drvdata(dev);
 350
 351         return scnprintf(buf, PAGE_SIZE, "%s\n", pld->info.version);
 352 }
 353
 354 static ssize_t kempld_specification_show(struct device *dev,
 355                 struct device_attribute *attr, char *buf)
 356 {
 357         struct kempld_device_data *pld = dev_get_drvdata(dev);
 358
 359         return scnprintf(buf, PAGE_SIZE, "%d.%d\n", pld->info.spec_major,
 360                        pld->info.spec_minor);
 361 }
 362
 363 static ssize_t kempld_type_show(struct device *dev,
 364                 struct device_attribute *attr, char *buf)
 365 {
 366         struct kempld_device_data *pld = dev_get_drvdata(dev);
 367
 368         return scnprintf(buf, PAGE_SIZE, "%s\n", kempld_get_type_string(pld));
 369 }
 370
 371 static DEVICE_ATTR(pld_version, S_IRUGO, kempld_version_show, NULL);
 372 static DEVICE_ATTR(pld_specification, S_IRUGO, kempld_specification_show,
 373                    NULL);
 374 static DEVICE_ATTR(pld_type, S_IRUGO, kempld_type_show, NULL);
 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 static int kempld_probe(struct platform_device *pdev)
 430 {
 431         const struct kempld_platform_data *pdata =
 432                 dev_get_platdata(&pdev->dev);
 433         struct device *dev = &pdev->dev;
 434         struct kempld_device_data *pld;
 435         struct resource *ioport;
 436
 437         pld = devm_kzalloc(dev, sizeof(*pld), GFP_KERNEL);
 438         if (!pld)
 439                 return -ENOMEM;
 440
 441         ioport = platform_get_resource(pdev, IORESOURCE_IO, 0);
 442         if (!ioport)
 443                 return -EINVAL;
 444
 445         pld->io_base = devm_ioport_map(dev, ioport->start,
 446                                         resource_size(ioport));
 447         if (!pld->io_base)
 448                 return -ENOMEM;
 449
 450         pld->io_index = pld->io_base;
 451         pld->io_data = pld->io_base + 1;
 452         pld->pld_clock = pdata->pld_clock;
 453         pld->dev = dev;
 454
 455         mutex_init(&pld->lock);
 456         platform_set_drvdata(pdev, pld);
 457
 458         return kempld_detect_device(pld);
 459 }
 460
 461 static int kempld_remove(struct platform_device *pdev)
 462 {
 463         struct kempld_device_data *pld = platform_get_drvdata(pdev);
 464         const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
 465
 466         sysfs_remove_group(&pld->dev->kobj, &pld_attr_group);
 467
 468         mfd_remove_devices(&pdev->dev);
 469         pdata->release_hardware_mutex(pld);
 470
 471         return 0;
 472 }
 473
 474 static struct platform_driver kempld_driver = {
 475         .driver         = {
 476                 .name   = "kempld",
 477         },
 478         .probe          = kempld_probe,
 479         .remove         = kempld_remove,
 480 };
 481
 482 static const struct dmi_system_id kempld_dmi_table[] __initconst = {
 483         {
 484                 .ident = "BBD6",
 485                 .matches = {
 486                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 487                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bBD"),
 488                 },
 489                 .driver_data = (void *)&kempld_platform_data_generic,
 490                 .callback = kempld_create_platform_device,
 491         }, {
 492                 .ident = "BBL6",
 493                 .matches = {
 494                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 495                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bBL6"),
 496                 },
 497                 .driver_data = (void *)&kempld_platform_data_generic,
 498                 .callback = kempld_create_platform_device,
 499         }, {
 500                 .ident = "BHL6",
 501                 .matches = {
 502                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 503                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bHL6"),
 504                 },
 505                 .driver_data = (void *)&kempld_platform_data_generic,
 506                 .callback = kempld_create_platform_device,
 507         }, {
 508                 .ident = "BKL6",
 509                 .matches = {
 510                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 511                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bKL6"),
 512                 },
 513                 .driver_data = (void *)&kempld_platform_data_generic,
 514                 .callback = kempld_create_platform_device,
 515         }, {
 516                 .ident = "BSL6",
 517                 .matches = {
 518                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 519                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bSL6"),
 520                 },
 521                 .driver_data = (void *)&kempld_platform_data_generic,
 522                 .callback = kempld_create_platform_device,
 523         }, {
 524                 .ident = "CAL6",
 525                 .matches = {
 526                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 527                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cAL"),
 528                 },
 529                 .driver_data = (void *)&kempld_platform_data_generic,
 530                 .callback = kempld_create_platform_device,
 531         }, {
 532                 .ident = "CBL6",
 533                 .matches = {
 534                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 535                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cBL6"),
 536                 },
 537                 .driver_data = (void *)&kempld_platform_data_generic,
 538                 .callback = kempld_create_platform_device,
 539         }, {
 540                 .ident = "CBW6",
 541                 .matches = {
 542                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 543                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cBW6"),
 544                 },
 545                 .driver_data = (void *)&kempld_platform_data_generic,
 546                 .callback = kempld_create_platform_device,
 547         }, {
 548                 .ident = "CCR2",
 549                 .matches = {
 550                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 551                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP2"),
 552                 },
 553                 .driver_data = (void *)&kempld_platform_data_generic,
 554                 .callback = kempld_create_platform_device,
 555         }, {
 556                 .ident = "CCR6",
 557                 .matches = {
 558                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 559                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP6"),
 560                 },
 561                 .driver_data = (void *)&kempld_platform_data_generic,
 562                 .callback = kempld_create_platform_device,
 563         }, {
 564                 .ident = "CHL6",
 565                 .matches = {
 566                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 567                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cHL6"),
 568                 },
 569                 .driver_data = (void *)&kempld_platform_data_generic,
 570                 .callback = kempld_create_platform_device,
 571         }, {
 572                 .ident = "CHR2",
 573                 .matches = {
 574                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 575                         DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T2"),
 576                 },
 577                 .driver_data = (void *)&kempld_platform_data_generic,
 578                 .callback = kempld_create_platform_device,
 579         }, {
 580                 .ident = "CHR2",
 581                 .matches = {
 582                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 583                         DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T2"),
 584                 },
 585                 .driver_data = (void *)&kempld_platform_data_generic,
 586                 .callback = kempld_create_platform_device,
 587         }, {
 588                 .ident = "CHR2",
 589                 .matches = {
 590                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 591                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC2"),
 592                 },
 593                 .driver_data = (void *)&kempld_platform_data_generic,
 594                 .callback = kempld_create_platform_device,
 595         }, {
 596                 .ident = "CHR6",
 597                 .matches = {
 598                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 599                         DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T6"),
 600                 },
 601                 .driver_data = (void *)&kempld_platform_data_generic,
 602                 .callback = kempld_create_platform_device,
 603         }, {
 604                 .ident = "CHR6",
 605                 .matches = {
 606                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 607                         DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T6"),
 608                 },
 609                 .driver_data = (void *)&kempld_platform_data_generic,
 610                 .callback = kempld_create_platform_device,
 611         }, {
 612                 .ident = "CHR6",
 613                 .matches = {
 614                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 615                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC6"),
 616                 },
 617                 .driver_data = (void *)&kempld_platform_data_generic,
 618                 .callback = kempld_create_platform_device,
 619         }, {
 620                 .ident = "CKL6",
 621                 .matches = {
 622                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 623                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cKL6"),
 624                 },
 625                 .driver_data = (void *)&kempld_platform_data_generic,
 626                 .callback = kempld_create_platform_device,
 627         }, {
 628                 .ident = "CNTG",
 629                 .matches = {
 630                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 631                         DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-PC"),
 632                 },
 633                 .driver_data = (void *)&kempld_platform_data_generic,
 634                 .callback = kempld_create_platform_device,
 635         }, {
 636                 .ident = "CNTG",
 637                 .matches = {
 638                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 639                         DMI_MATCH(DMI_BOARD_NAME, "COMe-bPC2"),
 640                 },
 641                 .driver_data = (void *)&kempld_platform_data_generic,
 642                 .callback = kempld_create_platform_device,
 643         }, {
 644                 .ident = "CNTX",
 645                 .matches = {
 646                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 647                         DMI_MATCH(DMI_BOARD_NAME, "PXT"),
 648                 },
 649                 .driver_data = (void *)&kempld_platform_data_generic,
 650                 .callback = kempld_create_platform_device,
 651         }, {
 652                 .ident = "CSL6",
 653                 .matches = {
 654                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 655                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cSL6"),
 656                 },
 657                 .driver_data = (void *)&kempld_platform_data_generic,
 658                 .callback = kempld_create_platform_device,
 659         }, {
 660                 .ident = "CVV6",
 661                 .matches = {
 662                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 663                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cBT"),
 664                 },
 665                 .driver_data = (void *)&kempld_platform_data_generic,
 666                 .callback = kempld_create_platform_device,
 667         }, {
 668                 .ident = "FRI2",
 669                 .matches = {
 670                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 671                         DMI_MATCH(DMI_BIOS_VERSION, "FRI2"),
 672                 },
 673                 .driver_data = (void *)&kempld_platform_data_generic,
 674                 .callback = kempld_create_platform_device,
 675         }, {
 676                 .ident = "FRI2",
 677                 .matches = {
 678                         DMI_MATCH(DMI_PRODUCT_NAME, "Fish River Island II"),
 679                 },
 680                 .driver_data = (void *)&kempld_platform_data_generic,
 681                 .callback = kempld_create_platform_device,
 682         }, {
 683                 .ident = "MAL1",
 684                 .matches = {
 685                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 686                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mAL10"),
 687                 },
 688                 .driver_data = (void *)&kempld_platform_data_generic,
 689                 .callback = kempld_create_platform_device,
 690         }, {
 691                 .ident = "MBR1",
 692                 .matches = {
 693                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 694                         DMI_MATCH(DMI_BOARD_NAME, "ETX-OH"),
 695                 },
 696                 .driver_data = (void *)&kempld_platform_data_generic,
 697                 .callback = kempld_create_platform_device,
 698         }, {
 699                 .ident = "MVV1",
 700                 .matches = {
 701                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 702                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mBT"),
 703                 },
 704                 .driver_data = (void *)&kempld_platform_data_generic,
 705                 .callback = kempld_create_platform_device,
 706         }, {
 707                 .ident = "NTC1",
 708                 .matches = {
 709                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 710                         DMI_MATCH(DMI_BOARD_NAME, "nanoETXexpress-TT"),
 711                 },
 712                 .driver_data = (void *)&kempld_platform_data_generic,
 713                 .callback = kempld_create_platform_device,
 714         }, {
 715                 .ident = "NTC1",
 716                 .matches = {
 717                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 718                         DMI_MATCH(DMI_BOARD_NAME, "nETXe-TT"),
 719                 },
 720                 .driver_data = (void *)&kempld_platform_data_generic,
 721                 .callback = kempld_create_platform_device,
 722         }, {
 723                 .ident = "NTC1",
 724                 .matches = {
 725                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 726                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mTT"),
 727                 },
 728                 .driver_data = (void *)&kempld_platform_data_generic,
 729                 .callback = kempld_create_platform_device,
 730         }, {
 731                 .ident = "NUP1",
 732                 .matches = {
 733                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 734                         DMI_MATCH(DMI_BOARD_NAME, "COMe-mCT"),
 735                 },
 736                 .driver_data = (void *)&kempld_platform_data_generic,
 737                 .callback = kempld_create_platform_device,
 738         }, {
 739                 .ident = "UNP1",
 740                 .matches = {
 741                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 742                         DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-DC"),
 743                 },
 744                 .driver_data = (void *)&kempld_platform_data_generic,
 745                 .callback = kempld_create_platform_device,
 746         }, {
 747                 .ident = "UNP1",
 748                 .matches = {
 749                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 750                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cDC2"),
 751                 },
 752                 .driver_data = (void *)&kempld_platform_data_generic,
 753                 .callback = kempld_create_platform_device,
 754         }, {
 755                 .ident = "UNTG",
 756                 .matches = {
 757                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 758                         DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-PC"),
 759                 },
 760                 .driver_data = (void *)&kempld_platform_data_generic,
 761                 .callback = kempld_create_platform_device,
 762         }, {
 763                 .ident = "UNTG",
 764                 .matches = {
 765                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 766                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cPC2"),
 767                 },
 768                 .driver_data = (void *)&kempld_platform_data_generic,
 769                 .callback = kempld_create_platform_device,
 770         }, {
 771                 .ident = "UUP6",
 772                 .matches = {
 773                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 774                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cCT6"),
 775                 },
 776                 .driver_data = (void *)&kempld_platform_data_generic,
 777                 .callback = kempld_create_platform_device,
 778         },
 779         {
 780                 .ident = "UTH6",
 781                 .matches = {
 782                         DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
 783                         DMI_MATCH(DMI_BOARD_NAME, "COMe-cTH6"),
 784                 },
 785                 .driver_data = (void *)&kempld_platform_data_generic,
 786                 .callback = kempld_create_platform_device,
 787         },
 788         {}
 789 };
 790 MODULE_DEVICE_TABLE(dmi, kempld_dmi_table);
 791
 792 static int __init kempld_init(void)
 793 {
 794         const struct dmi_system_id *id;
 795
 796         if (force_device_id[0]) {
 797                 for (id = kempld_dmi_table;
 798                      id->matches[0].slot != DMI_NONE; id++)
 799                         if (strstr(id->ident, force_device_id))
 800                                 if (id->callback && !id->callback(id))
 801                                         break;
 802                 if (id->matches[0].slot == DMI_NONE)
 803                         return -ENODEV;
 804         } else {
 805                 if (!dmi_check_system(kempld_dmi_table))
 806                         return -ENODEV;
 807         }
 808
 809         return platform_driver_register(&kempld_driver);
 810 }
 811
 812 static void __exit kempld_exit(void)
 813 {
 814         if (kempld_pdev)
 815                 platform_device_unregister(kempld_pdev);
 816
 817         platform_driver_unregister(&kempld_driver);
 818 }
 819
 820 module_init(kempld_init);
 821 module_exit(kempld_exit);
 822
 823 MODULE_DESCRIPTION("KEM PLD Core Driver");
 824 MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>");
 825 MODULE_LICENSE("GPL");
 826 MODULE_ALIAS("platform:kempld-core");