LXR linux/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
  18static char force_device_id[MAX_ID_LEN + 1] = "";
  19module_param_string(force_device_id, force_device_id,
  20                    sizeof(force_device_id), 0);
  21MODULE_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 */
  28static 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
  35static 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
  41static 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
  75enum kempld_cells {
  76        KEMPLD_I2C = 0,
  77        KEMPLD_WDT,
  78        KEMPLD_GPIO,
  79        KEMPLD_UART,
  80};
  81
  82static 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
  91static 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
 111static struct resource kempld_ioresource = {
 112        .start  = KEMPLD_IOINDEX,
 113        .end    = KEMPLD_IODATA,
 114        .flags  = IORESOURCE_IO,
 115};
 116
 117static 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
 126static struct platform_device *kempld_pdev;
 127
 128static 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;
 150err:
 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 */
 162u8 kempld_read8(struct kempld_device_data *pld, u8 index)
 163{
 164        iowrite8(index, pld->io_index);
 165        return ioread8(pld->io_data);
 166}
 167EXPORT_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 */
 177void 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}
 182EXPORT_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 */
 191u16 kempld_read16(struct kempld_device_data *pld, u8 index)
 192{
 193        return kempld_read8(pld, index) | kempld_read8(pld, index + 1) << 8;
 194}
 195EXPORT_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 */
 205void 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}
 210EXPORT_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 */
 219u32 kempld_read32(struct kempld_device_data *pld, u8 index)
 220{
 221        return kempld_read16(pld, index) | kempld_read16(pld, index + 2) << 16;
 222}
 223EXPORT_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 */
 233void 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}
 238EXPORT_SYMBOL_GPL(kempld_write32);
 239
 240/**
 241 * kempld_get_mutex - acquire PLD mutex
 242 * @pld: kempld_device_data structure describing the PLD
 243 */
 244void 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}
 251EXPORT_SYMBOL_GPL(kempld_get_mutex);
 252
 253/**
 254 * kempld_release_mutex - release PLD mutex
 255 * @pld: kempld_device_data structure describing the PLD
 256 */
 257void 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}
 264EXPORT_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 */
 274static 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 */
 317static 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
 324static 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
 346static 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
 354static 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
 363static 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
 371static DEVICE_ATTR(pld_version, S_IRUGO, kempld_version_show, NULL);
 372static DEVICE_ATTR(pld_specification, S_IRUGO, kempld_specification_show,
 373                   NULL);
 374static DEVICE_ATTR(pld_type, S_IRUGO, kempld_type_show, NULL);
 375
 376static 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
 383static const struct attribute_group pld_attr_group = {
 384        .attrs = pld_attributes,
 385};
 386
 387static 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
 429static 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
 461static 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
 474static struct platform_driver kempld_driver = {
 475        .driver         = {
 476                .name   = "kempld",
 477        },
 478        .probe          = kempld_probe,
 479        .remove         = kempld_remove,
 480};
 481
 482static 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};
 790MODULE_DEVICE_TABLE(dmi, kempld_dmi_table);
 791
 792static 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
 812static 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
 820module_init(kempld_init);
 821module_exit(kempld_exit);
 822
 823MODULE_DESCRIPTION("KEM PLD Core Driver");
 824MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>");
 825MODULE_LICENSE("GPL");
 826MODULE_ALIAS("platform:kempld-core");
 827