1 /* 2 * Kontron PLD MFD core driver 3 * 4 * Copyright (c) 2010-2013 Kontron Europe GmbH 5 * Author: Michael Brunner <michael.brunner@kontron.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License 2 as published 9 * by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17 #include <linux/platform_device.h> 18 #include <linux/mfd/core.h> 19 #include <linux/mfd/kempld.h> 20 #include <linux/module.h> 21 #include <linux/dmi.h> 22 #include <linux/io.h> 23 #include <linux/delay.h> 24 25 #define MAX_ID_LEN 4 26 static char force_device_id[MAX_ID_LEN + 1] = ""; 27 module_param_string(force_device_id, force_device_id, 28 sizeof(force_device_id), 0); 29 MODULE_PARM_DESC(force_device_id, "Override detected product"); 30 31 /* 32 * Get hardware mutex to block firmware from accessing the pld. 33 * It is possible for the firmware may hold the mutex for an extended length of 34 * time. This function will block until access has been granted. 35 */ 36 static void kempld_get_hardware_mutex(struct kempld_device_data *pld) 37 { 38 /* The mutex bit will read 1 until access has been granted */ 39 while (ioread8(pld->io_index) & KEMPLD_MUTEX_KEY) 40 usleep_range(1000, 3000); 41 } 42 43 static void kempld_release_hardware_mutex(struct kempld_device_data *pld) 44 { 45 /* The harware mutex is released when 1 is written to the mutex bit. */ 46 iowrite8(KEMPLD_MUTEX_KEY, pld->io_index); 47 } 48 49 static int kempld_get_info_generic(struct kempld_device_data *pld) 50 { 51 u16 version; 52 u8 spec; 53 54 kempld_get_mutex(pld); 55 56 version = kempld_read16(pld, KEMPLD_VERSION); 57 spec = kempld_read8(pld, KEMPLD_SPEC); 58 pld->info.buildnr = kempld_read16(pld, KEMPLD_BUILDNR); 59 60 pld->info.minor = KEMPLD_VERSION_GET_MINOR(version); 61 pld->info.major = KEMPLD_VERSION_GET_MAJOR(version); 62 pld->info.number = KEMPLD_VERSION_GET_NUMBER(version); 63 pld->info.type = KEMPLD_VERSION_GET_TYPE(version); 64 65 if (spec == 0xff) { 66 pld->info.spec_minor = 0; 67 pld->info.spec_major = 1; 68 } else { 69 pld->info.spec_minor = KEMPLD_SPEC_GET_MINOR(spec); 70 pld->info.spec_major = KEMPLD_SPEC_GET_MAJOR(spec); 71 } 72 73 if (pld->info.spec_major > 0) 74 pld->feature_mask = kempld_read16(pld, KEMPLD_FEATURE); 75 else 76 pld->feature_mask = 0; 77 78 kempld_release_mutex(pld); 79 80 return 0; 81 } 82 83 enum kempld_cells { 84 KEMPLD_I2C = 0, 85 KEMPLD_WDT, 86 KEMPLD_GPIO, 87 KEMPLD_UART, 88 }; 89 90 static const struct mfd_cell kempld_devs[] = { 91 [KEMPLD_I2C] = { 92 .name = "kempld-i2c", 93 }, 94 [KEMPLD_WDT] = { 95 .name = "kempld-wdt", 96 }, 97 [KEMPLD_GPIO] = { 98 .name = "kempld-gpio", 99 }, 100 [KEMPLD_UART] = { 101 .name = "kempld-uart", 102 }, 103 }; 104 105 #define KEMPLD_MAX_DEVS ARRAY_SIZE(kempld_devs) 106 107 static int kempld_register_cells_generic(struct kempld_device_data *pld) 108 { 109 struct mfd_cell devs[KEMPLD_MAX_DEVS]; 110 int i = 0; 111 112 if (pld->feature_mask & KEMPLD_FEATURE_BIT_I2C) 113 devs[i++] = kempld_devs[KEMPLD_I2C]; 114 115 if (pld->feature_mask & KEMPLD_FEATURE_BIT_WATCHDOG) 116 devs[i++] = kempld_devs[KEMPLD_WDT]; 117 118 if (pld->feature_mask & KEMPLD_FEATURE_BIT_GPIO) 119 devs[i++] = kempld_devs[KEMPLD_GPIO]; 120 121 if (pld->feature_mask & KEMPLD_FEATURE_MASK_UART) 122 devs[i++] = kempld_devs[KEMPLD_UART]; 123 124 return mfd_add_devices(pld->dev, -1, devs, i, NULL, 0, NULL); 125 } 126 127 static struct resource kempld_ioresource = { 128 .start = KEMPLD_IOINDEX, 129 .end = KEMPLD_IODATA, 130 .flags = IORESOURCE_IO, 131 }; 132 133 static const struct kempld_platform_data kempld_platform_data_generic = { 134 .pld_clock = KEMPLD_CLK, 135 .ioresource = &kempld_ioresource, 136 .get_hardware_mutex = kempld_get_hardware_mutex, 137 .release_hardware_mutex = kempld_release_hardware_mutex, 138 .get_info = kempld_get_info_generic, 139 .register_cells = kempld_register_cells_generic, 140 }; 141 142 static struct platform_device *kempld_pdev; 143 144 static int kempld_create_platform_device(const struct dmi_system_id *id) 145 { 146 struct kempld_platform_data *pdata = id->driver_data; 147 int ret; 148 149 kempld_pdev = platform_device_alloc("kempld", -1); 150 if (!kempld_pdev) 151 return -ENOMEM; 152 153 ret = platform_device_add_data(kempld_pdev, pdata, sizeof(*pdata)); 154 if (ret) 155 goto err; 156 157 ret = platform_device_add_resources(kempld_pdev, pdata->ioresource, 1); 158 if (ret) 159 goto err; 160 161 ret = platform_device_add(kempld_pdev); 162 if (ret) 163 goto err; 164 165 return 0; 166 err: 167 platform_device_put(kempld_pdev); 168 return ret; 169 } 170 171 /** 172 * kempld_read8 - read 8 bit register 173 * @pld: kempld_device_data structure describing the PLD 174 * @index: register index on the chip 175 * 176 * kempld_get_mutex must be called prior to calling this function. 177 */ 178 u8 kempld_read8(struct kempld_device_data *pld, u8 index) 179 { 180 iowrite8(index, pld->io_index); 181 return ioread8(pld->io_data); 182 } 183 EXPORT_SYMBOL_GPL(kempld_read8); 184 185 /** 186 * kempld_write8 - write 8 bit register 187 * @pld: kempld_device_data structure describing the PLD 188 * @index: register index on the chip 189 * @data: new register value 190 * 191 * kempld_get_mutex must be called prior to calling this function. 192 */ 193 void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data) 194 { 195 iowrite8(index, pld->io_index); 196 iowrite8(data, pld->io_data); 197 } 198 EXPORT_SYMBOL_GPL(kempld_write8); 199 200 /** 201 * kempld_read16 - read 16 bit register 202 * @pld: kempld_device_data structure describing the PLD 203 * @index: register index on the chip 204 * 205 * kempld_get_mutex must be called prior to calling this function. 206 */ 207 u16 kempld_read16(struct kempld_device_data *pld, u8 index) 208 { 209 return kempld_read8(pld, index) | kempld_read8(pld, index + 1) << 8; 210 } 211 EXPORT_SYMBOL_GPL(kempld_read16); 212 213 /** 214 * kempld_write16 - write 16 bit register 215 * @pld: kempld_device_data structure describing the PLD 216 * @index: register index on the chip 217 * @data: new register value 218 * 219 * kempld_get_mutex must be called prior to calling this function. 220 */ 221 void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data) 222 { 223 kempld_write8(pld, index, (u8)data); 224 kempld_write8(pld, index + 1, (u8)(data >> 8)); 225 } 226 EXPORT_SYMBOL_GPL(kempld_write16); 227 228 /** 229 * kempld_read32 - read 32 bit register 230 * @pld: kempld_device_data structure describing the PLD 231 * @index: register index on the chip 232 * 233 * kempld_get_mutex must be called prior to calling this function. 234 */ 235 u32 kempld_read32(struct kempld_device_data *pld, u8 index) 236 { 237 return kempld_read16(pld, index) | kempld_read16(pld, index + 2) << 16; 238 } 239 EXPORT_SYMBOL_GPL(kempld_read32); 240 241 /** 242 * kempld_write32 - write 32 bit register 243 * @pld: kempld_device_data structure describing the PLD 244 * @index: register index on the chip 245 * @data: new register value 246 * 247 * kempld_get_mutex must be called prior to calling this function. 248 */ 249 void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data) 250 { 251 kempld_write16(pld, index, (u16)data); 252 kempld_write16(pld, index + 2, (u16)(data >> 16)); 253 } 254 EXPORT_SYMBOL_GPL(kempld_write32); 255 256 /** 257 * kempld_get_mutex - acquire PLD mutex 258 * @pld: kempld_device_data structure describing the PLD 259 */ 260 void kempld_get_mutex(struct kempld_device_data *pld) 261 { 262 struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); 263 264 mutex_lock(&pld->lock); 265 pdata->get_hardware_mutex(pld); 266 } 267 EXPORT_SYMBOL_GPL(kempld_get_mutex); 268 269 /** 270 * kempld_release_mutex - release PLD mutex 271 * @pld: kempld_device_data structure describing the PLD 272 */ 273 void kempld_release_mutex(struct kempld_device_data *pld) 274 { 275 struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); 276 277 pdata->release_hardware_mutex(pld); 278 mutex_unlock(&pld->lock); 279 } 280 EXPORT_SYMBOL_GPL(kempld_release_mutex); 281 282 /** 283 * kempld_get_info - update device specific information 284 * @pld: kempld_device_data structure describing the PLD 285 * 286 * This function calls the configured board specific kempld_get_info_XXXX 287 * function which is responsible for gathering information about the specific 288 * hardware. The information is then stored within the pld structure. 289 */ 290 static int kempld_get_info(struct kempld_device_data *pld) 291 { 292 int ret; 293 struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); 294 char major, minor; 295 296 ret = pdata->get_info(pld); 297 if (ret) 298 return ret; 299 300 /* The Kontron PLD firmware version string has the following format: 301 * Pwxy.zzzz 302 * P: Fixed 303 * w: PLD number - 1 hex digit 304 * x: Major version - 1 alphanumerical digit (0-9A-V) 305 * y: Minor version - 1 alphanumerical digit (0-9A-V) 306 * zzzz: Build number - 4 zero padded hex digits */ 307 308 if (pld->info.major < 10) 309 major = pld->info.major + '0'; 310 else 311 major = (pld->info.major - 10) + 'A'; 312 if (pld->info.minor < 10) 313 minor = pld->info.minor + '0'; 314 else 315 minor = (pld->info.minor - 10) + 'A'; 316 317 ret = scnprintf(pld->info.version, sizeof(pld->info.version), 318 "P%X%c%c.%04X", pld->info.number, major, minor, 319 pld->info.buildnr); 320 if (ret < 0) 321 return ret; 322 323 return 0; 324 } 325 326 /* 327 * kempld_register_cells - register cell drivers 328 * 329 * This function registers cell drivers for the detected hardware by calling 330 * the configured kempld_register_cells_XXXX function which is responsible 331 * to detect and register the needed cell drivers. 332 */ 333 static int kempld_register_cells(struct kempld_device_data *pld) 334 { 335 struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); 336 337 return pdata->register_cells(pld); 338 } 339 340 static const char *kempld_get_type_string(struct kempld_device_data *pld) 341 { 342 const char *version_type; 343 344 switch (pld->info.type) { 345 case 0: 346 version_type = "release"; 347 break; 348 case 1: 349 version_type = "debug"; 350 break; 351 case 2: 352 version_type = "custom"; 353 break; 354 default: 355 version_type = "unspecified"; 356 break; 357 } 358 359 return version_type; 360 } 361 362 static ssize_t kempld_version_show(struct device *dev, 363 struct device_attribute *attr, char *buf) 364 { 365 struct kempld_device_data *pld = dev_get_drvdata(dev); 366 367 return scnprintf(buf, PAGE_SIZE, "%s\n", pld->info.version); 368 } 369 370 static ssize_t kempld_specification_show(struct device *dev, 371 struct device_attribute *attr, char *buf) 372 { 373 struct kempld_device_data *pld = dev_get_drvdata(dev); 374 375 return scnprintf(buf, PAGE_SIZE, "%d.%d\n", pld->info.spec_major, 376 pld->info.spec_minor); 377 } 378 379 static ssize_t kempld_type_show(struct device *dev, 380 struct device_attribute *attr, char *buf) 381 { 382 struct kempld_device_data *pld = dev_get_drvdata(dev); 383 384 return scnprintf(buf, PAGE_SIZE, "%s\n", kempld_get_type_string(pld)); 385 } 386 387 static DEVICE_ATTR(pld_version, S_IRUGO, kempld_version_show, NULL); 388 static DEVICE_ATTR(pld_specification, S_IRUGO, kempld_specification_show, 389 NULL); 390 static DEVICE_ATTR(pld_type, S_IRUGO, kempld_type_show, NULL); 391 392 static struct attribute *pld_attributes[] = { 393 &dev_attr_pld_version.attr, 394 &dev_attr_pld_specification.attr, 395 &dev_attr_pld_type.attr, 396 NULL 397 }; 398 399 static const struct attribute_group pld_attr_group = { 400 .attrs = pld_attributes, 401 }; 402 403 static int kempld_detect_device(struct kempld_device_data *pld) 404 { 405 u8 index_reg; 406 int ret; 407 408 mutex_lock(&pld->lock); 409 410 /* Check for empty IO space */ 411 index_reg = ioread8(pld->io_index); 412 if (index_reg == 0xff && ioread8(pld->io_data) == 0xff) { 413 mutex_unlock(&pld->lock); 414 return -ENODEV; 415 } 416 417 /* Release hardware mutex if acquired */ 418 if (!(index_reg & KEMPLD_MUTEX_KEY)) { 419 iowrite8(KEMPLD_MUTEX_KEY, pld->io_index); 420 /* PXT and COMe-cPC2 boards may require a second release */ 421 iowrite8(KEMPLD_MUTEX_KEY, pld->io_index); 422 } 423 424 mutex_unlock(&pld->lock); 425 426 ret = kempld_get_info(pld); 427 if (ret) 428 return ret; 429 430 dev_info(pld->dev, "Found Kontron PLD - %s (%s), spec %d.%d\n", 431 pld->info.version, kempld_get_type_string(pld), 432 pld->info.spec_major, pld->info.spec_minor); 433 434 ret = sysfs_create_group(&pld->dev->kobj, &pld_attr_group); 435 if (ret) 436 return ret; 437 438 ret = kempld_register_cells(pld); 439 if (ret) 440 sysfs_remove_group(&pld->dev->kobj, &pld_attr_group); 441 442 return ret; 443 } 444 445 static int kempld_probe(struct platform_device *pdev) 446 { 447 struct kempld_platform_data *pdata = dev_get_platdata(&pdev->dev); 448 struct device *dev = &pdev->dev; 449 struct kempld_device_data *pld; 450 struct resource *ioport; 451 int ret; 452 453 pld = devm_kzalloc(dev, sizeof(*pld), GFP_KERNEL); 454 if (!pld) 455 return -ENOMEM; 456 457 ioport = platform_get_resource(pdev, IORESOURCE_IO, 0); 458 if (!ioport) 459 return -EINVAL; 460 461 pld->io_base = devm_ioport_map(dev, ioport->start, 462 ioport->end - ioport->start); 463 if (!pld->io_base) 464 return -ENOMEM; 465 466 pld->io_index = pld->io_base; 467 pld->io_data = pld->io_base + 1; 468 pld->pld_clock = pdata->pld_clock; 469 pld->dev = dev; 470 471 mutex_init(&pld->lock); 472 platform_set_drvdata(pdev, pld); 473 474 ret = kempld_detect_device(pld); 475 if (ret) 476 return ret; 477 478 return 0; 479 } 480 481 static int kempld_remove(struct platform_device *pdev) 482 { 483 struct kempld_device_data *pld = platform_get_drvdata(pdev); 484 struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); 485 486 sysfs_remove_group(&pld->dev->kobj, &pld_attr_group); 487 488 mfd_remove_devices(&pdev->dev); 489 pdata->release_hardware_mutex(pld); 490 491 return 0; 492 } 493 494 static struct platform_driver kempld_driver = { 495 .driver = { 496 .name = "kempld", 497 }, 498 .probe = kempld_probe, 499 .remove = kempld_remove, 500 }; 501 502 static struct dmi_system_id kempld_dmi_table[] __initdata = { 503 { 504 .ident = "BHL6", 505 .matches = { 506 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 507 DMI_MATCH(DMI_BOARD_NAME, "COMe-bHL6"), 508 }, 509 .driver_data = (void *)&kempld_platform_data_generic, 510 .callback = kempld_create_platform_device, 511 }, 512 { 513 .ident = "CCR2", 514 .matches = { 515 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 516 DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP2"), 517 }, 518 .driver_data = (void *)&kempld_platform_data_generic, 519 .callback = kempld_create_platform_device, 520 }, { 521 .ident = "CCR6", 522 .matches = { 523 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 524 DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP6"), 525 }, 526 .driver_data = (void *)&kempld_platform_data_generic, 527 .callback = kempld_create_platform_device, 528 }, { 529 .ident = "CHL6", 530 .matches = { 531 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 532 DMI_MATCH(DMI_BOARD_NAME, "COMe-cHL6"), 533 }, 534 .driver_data = (void *)&kempld_platform_data_generic, 535 .callback = kempld_create_platform_device, 536 }, { 537 .ident = "CHR2", 538 .matches = { 539 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 540 DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T2"), 541 }, 542 .driver_data = (void *)&kempld_platform_data_generic, 543 .callback = kempld_create_platform_device, 544 }, { 545 .ident = "CHR2", 546 .matches = { 547 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 548 DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T2"), 549 }, 550 .driver_data = (void *)&kempld_platform_data_generic, 551 .callback = kempld_create_platform_device, 552 }, { 553 .ident = "CHR2", 554 .matches = { 555 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 556 DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC2"), 557 }, 558 .driver_data = (void *)&kempld_platform_data_generic, 559 .callback = kempld_create_platform_device, 560 }, { 561 .ident = "CHR6", 562 .matches = { 563 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 564 DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T6"), 565 }, 566 .driver_data = (void *)&kempld_platform_data_generic, 567 .callback = kempld_create_platform_device, 568 }, { 569 .ident = "CHR6", 570 .matches = { 571 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 572 DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T6"), 573 }, 574 .driver_data = (void *)&kempld_platform_data_generic, 575 .callback = kempld_create_platform_device, 576 }, { 577 .ident = "CHR6", 578 .matches = { 579 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 580 DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC6"), 581 }, 582 .driver_data = (void *)&kempld_platform_data_generic, 583 .callback = kempld_create_platform_device, 584 }, { 585 .ident = "CNTG", 586 .matches = { 587 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 588 DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-PC"), 589 }, 590 .driver_data = (void *)&kempld_platform_data_generic, 591 .callback = kempld_create_platform_device, 592 }, { 593 .ident = "CNTG", 594 .matches = { 595 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 596 DMI_MATCH(DMI_BOARD_NAME, "COMe-bPC2"), 597 }, 598 .driver_data = (void *)&kempld_platform_data_generic, 599 .callback = kempld_create_platform_device, 600 }, { 601 .ident = "CNTX", 602 .matches = { 603 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 604 DMI_MATCH(DMI_BOARD_NAME, "PXT"), 605 }, 606 .driver_data = (void *)&kempld_platform_data_generic, 607 .callback = kempld_create_platform_device, 608 }, { 609 .ident = "CVV6", 610 .matches = { 611 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 612 DMI_MATCH(DMI_BOARD_NAME, "COMe-cBT"), 613 }, 614 .driver_data = (void *)&kempld_platform_data_generic, 615 .callback = kempld_create_platform_device, 616 }, { 617 .ident = "FRI2", 618 .matches = { 619 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 620 DMI_MATCH(DMI_BIOS_VERSION, "FRI2"), 621 }, 622 .driver_data = (void *)&kempld_platform_data_generic, 623 .callback = kempld_create_platform_device, 624 }, { 625 .ident = "FRI2", 626 .matches = { 627 DMI_MATCH(DMI_PRODUCT_NAME, "Fish River Island II"), 628 }, 629 .driver_data = (void *)&kempld_platform_data_generic, 630 .callback = kempld_create_platform_device, 631 }, { 632 .ident = "MBR1", 633 .matches = { 634 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 635 DMI_MATCH(DMI_BOARD_NAME, "ETX-OH"), 636 }, 637 .driver_data = (void *)&kempld_platform_data_generic, 638 .callback = kempld_create_platform_device, 639 }, { 640 .ident = "MVV1", 641 .matches = { 642 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 643 DMI_MATCH(DMI_BOARD_NAME, "COMe-mBT"), 644 }, 645 .driver_data = (void *)&kempld_platform_data_generic, 646 .callback = kempld_create_platform_device, 647 }, { 648 .ident = "NTC1", 649 .matches = { 650 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 651 DMI_MATCH(DMI_BOARD_NAME, "nanoETXexpress-TT"), 652 }, 653 .driver_data = (void *)&kempld_platform_data_generic, 654 .callback = kempld_create_platform_device, 655 }, { 656 .ident = "NTC1", 657 .matches = { 658 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 659 DMI_MATCH(DMI_BOARD_NAME, "nETXe-TT"), 660 }, 661 .driver_data = (void *)&kempld_platform_data_generic, 662 .callback = kempld_create_platform_device, 663 }, { 664 .ident = "NTC1", 665 .matches = { 666 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 667 DMI_MATCH(DMI_BOARD_NAME, "COMe-mTT"), 668 }, 669 .driver_data = (void *)&kempld_platform_data_generic, 670 .callback = kempld_create_platform_device, 671 }, { 672 .ident = "NUP1", 673 .matches = { 674 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 675 DMI_MATCH(DMI_BOARD_NAME, "COMe-mCT"), 676 }, 677 .driver_data = (void *)&kempld_platform_data_generic, 678 .callback = kempld_create_platform_device, 679 }, { 680 .ident = "UNP1", 681 .matches = { 682 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 683 DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-DC"), 684 }, 685 .driver_data = (void *)&kempld_platform_data_generic, 686 .callback = kempld_create_platform_device, 687 }, { 688 .ident = "UNP1", 689 .matches = { 690 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 691 DMI_MATCH(DMI_BOARD_NAME, "COMe-cDC2"), 692 }, 693 .driver_data = (void *)&kempld_platform_data_generic, 694 .callback = kempld_create_platform_device, 695 }, { 696 .ident = "UNTG", 697 .matches = { 698 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 699 DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-PC"), 700 }, 701 .driver_data = (void *)&kempld_platform_data_generic, 702 .callback = kempld_create_platform_device, 703 }, { 704 .ident = "UNTG", 705 .matches = { 706 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 707 DMI_MATCH(DMI_BOARD_NAME, "COMe-cPC2"), 708 }, 709 .driver_data = (void *)&kempld_platform_data_generic, 710 .callback = kempld_create_platform_device, 711 }, { 712 .ident = "UUP6", 713 .matches = { 714 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 715 DMI_MATCH(DMI_BOARD_NAME, "COMe-cCT6"), 716 }, 717 .driver_data = (void *)&kempld_platform_data_generic, 718 .callback = kempld_create_platform_device, 719 }, 720 { 721 .ident = "UTH6", 722 .matches = { 723 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"), 724 DMI_MATCH(DMI_BOARD_NAME, "COMe-cTH6"), 725 }, 726 .driver_data = (void *)&kempld_platform_data_generic, 727 .callback = kempld_create_platform_device, 728 }, 729 {} 730 }; 731 MODULE_DEVICE_TABLE(dmi, kempld_dmi_table); 732 733 static int __init kempld_init(void) 734 { 735 const struct dmi_system_id *id; 736 int ret; 737 738 if (force_device_id[0]) { 739 for (id = kempld_dmi_table; 740 id->matches[0].slot != DMI_NONE; id++) 741 if (strstr(id->ident, force_device_id)) 742 if (id->callback && id->callback(id)) 743 break; 744 if (id->matches[0].slot == DMI_NONE) 745 return -ENODEV; 746 } else { 747 if (!dmi_check_system(kempld_dmi_table)) 748 return -ENODEV; 749 } 750 751 ret = platform_driver_register(&kempld_driver); 752 if (ret) 753 return ret; 754 755 return 0; 756 } 757 758 static void __exit kempld_exit(void) 759 { 760 if (kempld_pdev) 761 platform_device_unregister(kempld_pdev); 762 763 platform_driver_unregister(&kempld_driver); 764 } 765 766 module_init(kempld_init); 767 module_exit(kempld_exit); 768 769 MODULE_DESCRIPTION("KEM PLD Core Driver"); 770 MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>"); 771 MODULE_LICENSE("GPL"); 772 MODULE_ALIAS("platform:kempld-core"); 773