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, sizeof(force_device_id), 0); 28 MODULE_PARM_DESC(force_device_id, "Override detected product"); 29 30 /* 31 * Get hardware mutex to block firmware from accessing the pld. 32 * It is possible for the firmware may hold the mutex for an extended length of 33 * time. This function will block until access has been granted. 34 */ 35 static void kempld_get_hardware_mutex(struct kempld_device_data *pld) 36 { 37 /* The mutex bit will read 1 until access has been granted */ 38 while (ioread8(pld->io_index) & KEMPLD_MUTEX_KEY) 39 msleep(1); 40 } 41 42 static void kempld_release_hardware_mutex(struct kempld_device_data *pld) 43 { 44 /* The harware mutex is released when 1 is written to the mutex bit. */ 45 iowrite8(KEMPLD_MUTEX_KEY, pld->io_index); 46 } 47 48 static int kempld_get_info_generic(struct kempld_device_data *pld) 49 { 50 u16 version; 51 u8 spec; 52 53 kempld_get_mutex(pld); 54 55 version = kempld_read16(pld, KEMPLD_VERSION); 56 spec = kempld_read8(pld, KEMPLD_SPEC); 57 pld->info.buildnr = kempld_read16(pld, KEMPLD_BUILDNR); 58 59 pld->info.minor = KEMPLD_VERSION_GET_MINOR(version); 60 pld->info.major = KEMPLD_VERSION_GET_MAJOR(version); 61 pld->info.number = KEMPLD_VERSION_GET_NUMBER(version); 62 pld->info.type = KEMPLD_VERSION_GET_TYPE(version); 63 64 if (spec == 0xff) { 65 pld->info.spec_minor = 0; 66 pld->info.spec_major = 1; 67 } else { 68 pld->info.spec_minor = KEMPLD_SPEC_GET_MINOR(spec); 69 pld->info.spec_major = KEMPLD_SPEC_GET_MAJOR(spec); 70 } 71 72 if (pld->info.spec_major > 0) 73 pld->feature_mask = kempld_read16(pld, KEMPLD_FEATURE); 74 else 75 pld->feature_mask = 0; 76 77 kempld_release_mutex(pld); 78 79 return 0; 80 } 81 82 enum kempld_cells { 83 KEMPLD_I2C = 0, 84 KEMPLD_WDT, 85 KEMPLD_GPIO, 86 KEMPLD_UART, 87 }; 88 89 static const struct mfd_cell kempld_devs[] = { 90 [KEMPLD_I2C] = { 91 .name = "kempld-i2c", 92 }, 93 [KEMPLD_WDT] = { 94 .name = "kempld-wdt", 95 }, 96 [KEMPLD_GPIO] = { 97 .name = "kempld-gpio", 98 }, 99 [KEMPLD_UART] = { 100 .name = "kempld-uart", 101 }, 102 }; 103 104 #define KEMPLD_MAX_DEVS ARRAY_SIZE(kempld_devs) 105 106 static int kempld_register_cells_generic(struct kempld_device_data *pld) 107 { 108 struct mfd_cell devs[KEMPLD_MAX_DEVS]; 109 int i = 0; 110 111 if (pld->feature_mask & KEMPLD_FEATURE_BIT_I2C) 112 devs[i++] = kempld_devs[KEMPLD_I2C]; 113 114 if (pld->feature_mask & KEMPLD_FEATURE_BIT_WATCHDOG) 115 devs[i++] = kempld_devs[KEMPLD_WDT]; 116 117 if (pld->feature_mask & KEMPLD_FEATURE_BIT_GPIO) 118 devs[i++] = kempld_devs[KEMPLD_GPIO]; 119 120 if (pld->feature_mask & KEMPLD_FEATURE_MASK_UART) 121 devs[i++] = kempld_devs[KEMPLD_UART]; 122 123 return mfd_add_devices(pld->dev, -1, devs, i, NULL, 0, NULL); 124 } 125 126 static struct resource kempld_ioresource = { 127 .start = KEMPLD_IOINDEX, 128 .end = KEMPLD_IODATA, 129 .flags = IORESOURCE_IO, 130 }; 131 132 static const struct kempld_platform_data kempld_platform_data_generic = { 133 .pld_clock = KEMPLD_CLK, 134 .ioresource = &kempld_ioresource, 135 .get_hardware_mutex = kempld_get_hardware_mutex, 136 .release_hardware_mutex = kempld_release_hardware_mutex, 137 .get_info = kempld_get_info_generic, 138 .register_cells = kempld_register_cells_generic, 139 }; 140 141 static struct platform_device *kempld_pdev; 142 143 static int kempld_create_platform_device(const struct dmi_system_id *id) 144 { 145 struct kempld_platform_data *pdata = id->driver_data; 146 int ret; 147 148 kempld_pdev = platform_device_alloc("kempld", -1); 149 if (!kempld_pdev) 150 return -ENOMEM; 151 152 ret = platform_device_add_data(kempld_pdev, pdata, sizeof(*pdata)); 153 if (ret) 154 goto err; 155 156 ret = platform_device_add_resources(kempld_pdev, pdata->ioresource, 1); 157 if (ret) 158 goto err; 159 160 ret = platform_device_add(kempld_pdev); 161 if (ret) 162 goto err; 163 164 return 0; 165 err: 166 platform_device_put(kempld_pdev); 167 return ret; 168 } 169 170 /** 171 * kempld_read8 - read 8 bit register 172 * @pld: kempld_device_data structure describing the PLD 173 * @index: register index on the chip 174 * 175 * kempld_get_mutex must be called prior to calling this function. 176 */ 177 u8 kempld_read8(struct kempld_device_data *pld, u8 index) 178 { 179 iowrite8(index, pld->io_index); 180 return ioread8(pld->io_data); 181 } 182 EXPORT_SYMBOL_GPL(kempld_read8); 183 184 /** 185 * kempld_write8 - write 8 bit register 186 * @pld: kempld_device_data structure describing the PLD 187 * @index: register index on the chip 188 * @data: new register value 189 * 190 * kempld_get_mutex must be called prior to calling this function. 191 */ 192 void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data) 193 { 194 iowrite8(index, pld->io_index); 195 iowrite8(data, pld->io_data); 196 } 197 EXPORT_SYMBOL_GPL(kempld_write8); 198 199 /** 200 * kempld_read16 - read 16 bit register 201 * @pld: kempld_device_data structure describing the PLD 202 * @index: register index on the chip 203 * 204 * kempld_get_mutex must be called prior to calling this function. 205 */ 206 u16 kempld_read16(struct kempld_device_data *pld, u8 index) 207 { 208 return kempld_read8(pld, index) | kempld_read8(pld, index + 1) << 8; 209 } 210 EXPORT_SYMBOL_GPL(kempld_read16); 211 212 /** 213 * kempld_write16 - write 16 bit register 214 * @pld: kempld_device_data structure describing the PLD 215 * @index: register index on the chip 216 * @data: new register value 217 * 218 * kempld_get_mutex must be called prior to calling this function. 219 */ 220 void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data) 221 { 222 kempld_write8(pld, index, (u8)data); 223 kempld_write8(pld, index + 1, (u8)(data >> 8)); 224 } 225 EXPORT_SYMBOL_GPL(kempld_write16); 226 227 /** 228 * kempld_read32 - read 32 bit register 229 * @pld: kempld_device_data structure describing the PLD 230 * @index: register index on the chip 231 * 232 * kempld_get_mutex must be called prior to calling this function. 233 */ 234 u32 kempld_read32(struct kempld_device_data *pld, u8 index) 235 { 236 return kempld_read16(pld, index) | kempld_read16(pld, index + 2) << 16; 237 } 238 EXPORT_SYMBOL_GPL(kempld_read32); 239 240 /** 241 * kempld_write32 - write 32 bit register 242 * @pld: kempld_device_data structure describing the PLD 243 * @index: register index on the chip 244 * @data: new register value 245 * 246 * kempld_get_mutex must be called prior to calling this function. 247 */ 248 void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data) 249 { 250 kempld_write16(pld, index, (u16)data); 251 kempld_write16(pld, index + 2, (u16)(data >> 16)); 252 } 253 EXPORT_SYMBOL_GPL(kempld_write32); 254 255 /** 256 * kempld_get_mutex - acquire PLD mutex 257 * @pld: kempld_device_data structure describing the PLD 258 */ 259 void kempld_get_mutex(struct kempld_device_data *pld) 260 { 261 struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); 262 263 mutex_lock(&pld->lock); 264 pdata->get_hardware_mutex(pld); 265 } 266 EXPORT_SYMBOL_GPL(kempld_get_mutex); 267 268 /** 269 * kempld_release_mutex - release PLD mutex 270 * @pld: kempld_device_data structure describing the PLD 271 */ 272 void kempld_release_mutex(struct kempld_device_data *pld) 273 { 274 struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); 275 276 pdata->release_hardware_mutex(pld); 277 mutex_unlock(&pld->lock); 278 } 279 EXPORT_SYMBOL_GPL(kempld_release_mutex); 280 281 /** 282 * kempld_get_info - update device specific information 283 * @pld: kempld_device_data structure describing the PLD 284 * 285 * This function calls the configured board specific kempld_get_info_XXXX 286 * function which is responsible for gathering information about the specific 287 * hardware. The information is then stored within the pld structure. 288 */ 289 static int kempld_get_info(struct kempld_device_data *pld) 290 { 291 int ret; 292 struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); 293 char major, minor; 294 295 ret = pdata->get_info(pld); 296 if (ret) 297 return ret; 298 299 /* The Kontron PLD firmware version string has the following format: 300 * Pwxy.zzzz 301 * P: Fixed 302 * w: PLD number - 1 hex digit 303 * x: Major version - 1 alphanumerical digit (0-9A-V) 304 * y: Minor version - 1 alphanumerical digit (0-9A-V) 305 * zzzz: Build number - 4 zero padded hex digits */ 306 307 if (pld->info.major < 10) 308 major = pld->info.major + '0'; 309 else 310 major = (pld->info.major - 10) + 'A'; 311 if (pld->info.minor < 10) 312 minor = pld->info.minor + '0'; 313 else 314 minor = (pld->info.minor - 10) + 'A'; 315 316 ret = scnprintf(pld->info.version, sizeof(pld->info.version), 317 "P%X%c%c.%04X", pld->info.number, major, minor, 318 pld->info.buildnr); 319 if (ret < 0) 320 return ret; 321 322 return 0; 323 } 324 325 /* 326 * kempld_register_cells - register cell drivers 327 * 328 * This function registers cell drivers for the detected hardware by calling 329 * the configured kempld_register_cells_XXXX function which is responsible 330 * to detect and register the needed cell drivers. 331 */ 332 static int kempld_register_cells(struct kempld_device_data *pld) 333 { 334 struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); 335 336 return pdata->register_cells(pld); 337 } 338 339 static const char *kempld_get_type_string(struct kempld_device_data *pld) 340 { 341 const char *version_type; 342 343 switch (pld->info.type) { 344 case 0: 345 version_type = "release"; 346 break; 347 case 1: 348 version_type = "debug"; 349 break; 350 case 2: 351 version_type = "custom"; 352 break; 353 default: 354 version_type = "unspecified"; 355 break; 356 } 357 358 return version_type; 359 } 360 361 static ssize_t kempld_version_show(struct device *dev, 362 struct device_attribute *attr, char *buf) 363 { 364 struct kempld_device_data *pld = dev_get_drvdata(dev); 365 366 return scnprintf(buf, PAGE_SIZE, "%s\n", pld->info.version); 367 } 368 369 static ssize_t kempld_specification_show(struct device *dev, 370 struct device_attribute *attr, char *buf) 371 { 372 struct kempld_device_data *pld = dev_get_drvdata(dev); 373 374 return scnprintf(buf, PAGE_SIZE, "%d.%d\n", pld->info.spec_major, 375 pld->info.spec_minor); 376 } 377 378 static ssize_t kempld_type_show(struct device *dev, 379 struct device_attribute *attr, char *buf) 380 { 381 struct kempld_device_data *pld = dev_get_drvdata(dev); 382 383 return scnprintf(buf, PAGE_SIZE, "%s\n", kempld_get_type_string(pld)); 384 } 385 386 static DEVICE_ATTR(pld_version, S_IRUGO, kempld_version_show, NULL); 387 static DEVICE_ATTR(pld_specification, S_IRUGO, kempld_specification_show, 388 NULL); 389 static DEVICE_ATTR(pld_type, S_IRUGO, kempld_type_show, NULL); 390 391 static struct attribute *pld_attributes[] = { 392 &dev_attr_pld_version.attr, 393 &dev_attr_pld_specification.attr, 394 &dev_attr_pld_type.attr, 395 NULL 396 }; 397 398 static const struct attribute_group pld_attr_group = { 399 .attrs = pld_attributes, 400 }; 401 402 static int kempld_detect_device(struct kempld_device_data *pld) 403 { 404 u8 index_reg; 405 int ret; 406 407 mutex_lock(&pld->lock); 408 409 /* Check for empty IO space */ 410 index_reg = ioread8(pld->io_index); 411 if (index_reg == 0xff && ioread8(pld->io_data) == 0xff) { 412 mutex_unlock(&pld->lock); 413 return -ENODEV; 414 } 415 416 /* Release hardware mutex if acquired */ 417 if (!(index_reg & KEMPLD_MUTEX_KEY)) { 418 iowrite8(KEMPLD_MUTEX_KEY, pld->io_index); 419 /* PXT and COMe-cPC2 boards may require a second release */ 420 iowrite8(KEMPLD_MUTEX_KEY, pld->io_index); 421 } 422 423 mutex_unlock(&pld->lock); 424 425 ret = kempld_get_info(pld); 426 if (ret) 427 return ret; 428 429 dev_info(pld->dev, "Found Kontron PLD - %s (%s), spec %d.%d\n", 430 pld->info.version, kempld_get_type_string(pld), 431 pld->info.spec_major, pld->info.spec_minor); 432 433 ret = sysfs_create_group(&pld->dev->kobj, &pld_attr_group); 434 if (ret) 435 return ret; 436 437 ret = kempld_register_cells(pld); 438 if (ret) 439 sysfs_remove_group(&pld->dev->kobj, &pld_attr_group); 440 441 return ret; 442 } 443 444 static int kempld_probe(struct platform_device *pdev) 445 { 446 struct kempld_platform_data *pdata = dev_get_platdata(&pdev->dev); 447 struct device *dev = &pdev->dev; 448 struct kempld_device_data *pld; 449 struct resource *ioport; 450 int ret; 451 452 pld = devm_kzalloc(dev, sizeof(*pld), GFP_KERNEL); 453 if (!pld) 454 return -ENOMEM; 455 456 ioport = platform_get_resource(pdev, IORESOURCE_IO, 0); 457 if (!ioport) 458 return -EINVAL; 459 460 pld->io_base = devm_ioport_map(dev, ioport->start, 461 ioport->end - ioport->start); 462 if (!pld->io_base) 463 return -ENOMEM; 464 465 pld->io_index = pld->io_base; 466 pld->io_data = pld->io_base + 1; 467 pld->pld_clock = pdata->pld_clock; 468 pld->dev = dev; 469 470 mutex_init(&pld->lock); 471 platform_set_drvdata(pdev, pld); 472 473 ret = kempld_detect_device(pld); 474 if (ret) 475 return ret; 476 477 return 0; 478 } 479 480 static int kempld_remove(struct platform_device *pdev) 481 { 482 struct kempld_device_data *pld = platform_get_drvdata(pdev); 483 struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); 484 485 sysfs_remove_group(&pld->dev->kobj, &pld_attr_group); 486 487 mfd_remove_devices(&pdev->dev); 488 pdata->release_hardware_mutex(pld); 489 490 return 0; 491 } 492 493 static struct platform_driver kempld_driver = { 494 .driver = { 495 .name = "kempld", 496 .owner = THIS_MODULE, 497 }, 498 .probe = kempld_probe, 499 .remove = kempld_remove, 500 }; 501 502 static struct dmi_system_id __initdata kempld_dmi_table[] = { 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; id->matches[0].slot != DMI_NONE; id++) 740 if (strstr(id->ident, force_device_id)) 741 if (id->callback && id->callback(id)) 742 break; 743 if (id->matches[0].slot == DMI_NONE) 744 return -ENODEV; 745 } else { 746 if (!dmi_check_system(kempld_dmi_table)) 747 return -ENODEV; 748 } 749 750 ret = platform_driver_register(&kempld_driver); 751 if (ret) 752 return ret; 753 754 return 0; 755 } 756 757 static void __exit kempld_exit(void) 758 { 759 if (kempld_pdev) 760 platform_device_unregister(kempld_pdev); 761 762 platform_driver_unregister(&kempld_driver); 763 } 764 765 module_init(kempld_init); 766 module_exit(kempld_exit); 767 768 MODULE_DESCRIPTION("KEM PLD Core Driver"); 769 MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>"); 770 MODULE_LICENSE("GPL"); 771 MODULE_ALIAS("platform:kempld-core"); 772