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
26static char force_device_id[MAX_ID_LEN + 1] = "";
27module_param_string(force_device_id, force_device_id,
28 sizeof(force_device_id), 0);
29MODULE_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 */
36static 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
43static 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
49static 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
83enum kempld_cells {
84 KEMPLD_I2C = 0,
85 KEMPLD_WDT,
86 KEMPLD_GPIO,
87 KEMPLD_UART,
88};
89
90static 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
107static 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
127static struct resource kempld_ioresource = {
128 .start = KEMPLD_IOINDEX,
129 .end = KEMPLD_IODATA,
130 .flags = IORESOURCE_IO,
131};
132
133static 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
142static struct platform_device *kempld_pdev;
143
144static int kempld_create_platform_device(const struct dmi_system_id *id)
145{
146 const 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;
166err:
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 */
178u8 kempld_read8(struct kempld_device_data *pld, u8 index)
179{
180 iowrite8(index, pld->io_index);
181 return ioread8(pld->io_data);
182}
183EXPORT_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 */
193void 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}
198EXPORT_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 */
207u16 kempld_read16(struct kempld_device_data *pld, u8 index)
208{
209 return kempld_read8(pld, index) | kempld_read8(pld, index + 1) << 8;
210}
211EXPORT_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 */
221void 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}
226EXPORT_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 */
235u32 kempld_read32(struct kempld_device_data *pld, u8 index)
236{
237 return kempld_read16(pld, index) | kempld_read16(pld, index + 2) << 16;
238}
239EXPORT_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 */
249void 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}
254EXPORT_SYMBOL_GPL(kempld_write32);
255
256/**
257 * kempld_get_mutex - acquire PLD mutex
258 * @pld: kempld_device_data structure describing the PLD
259 */
260void kempld_get_mutex(struct kempld_device_data *pld)
261{
262 const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
263
264 mutex_lock(&pld->lock);
265 pdata->get_hardware_mutex(pld);
266}
267EXPORT_SYMBOL_GPL(kempld_get_mutex);
268
269/**
270 * kempld_release_mutex - release PLD mutex
271 * @pld: kempld_device_data structure describing the PLD
272 */
273void kempld_release_mutex(struct kempld_device_data *pld)
274{
275 const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
276
277 pdata->release_hardware_mutex(pld);
278 mutex_unlock(&pld->lock);
279}
280EXPORT_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 */
290static int kempld_get_info(struct kempld_device_data *pld)
291{
292 int ret;
293 const 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 */
333static int kempld_register_cells(struct kempld_device_data *pld)
334{
335 const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
336
337 return pdata->register_cells(pld);
338}
339
340static 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
362static 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
370static 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
379static 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
387static DEVICE_ATTR(pld_version, S_IRUGO, kempld_version_show, NULL);
388static DEVICE_ATTR(pld_specification, S_IRUGO, kempld_specification_show,
389 NULL);
390static DEVICE_ATTR(pld_type, S_IRUGO, kempld_type_show, NULL);
391
392static 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
399static const struct attribute_group pld_attr_group = {
400 .attrs = pld_attributes,
401};
402
403static 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
445static int kempld_probe(struct platform_device *pdev)
446{
447 const struct kempld_platform_data *pdata =
448 dev_get_platdata(&pdev->dev);
449 struct device *dev = &pdev->dev;
450 struct kempld_device_data *pld;
451 struct resource *ioport;
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 resource_size(ioport));
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 return kempld_detect_device(pld);
475}
476
477static int kempld_remove(struct platform_device *pdev)
478{
479 struct kempld_device_data *pld = platform_get_drvdata(pdev);
480 const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
481
482 sysfs_remove_group(&pld->dev->kobj, &pld_attr_group);
483
484 mfd_remove_devices(&pdev->dev);
485 pdata->release_hardware_mutex(pld);
486
487 return 0;
488}
489
490static struct platform_driver kempld_driver = {
491 .driver = {
492 .name = "kempld",
493 },
494 .probe = kempld_probe,
495 .remove = kempld_remove,
496};
497
498static const struct dmi_system_id kempld_dmi_table[] __initconst = {
499 {
500 .ident = "BBD6",
501 .matches = {
502 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
503 DMI_MATCH(DMI_BOARD_NAME, "COMe-bBD"),
504 },
505 .driver_data = (void *)&kempld_platform_data_generic,
506 .callback = kempld_create_platform_device,
507 }, {
508 .ident = "BBL6",
509 .matches = {
510 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
511 DMI_MATCH(DMI_BOARD_NAME, "COMe-bBL6"),
512 },
513 .driver_data = (void *)&kempld_platform_data_generic,
514 .callback = kempld_create_platform_device,
515 }, {
516 .ident = "BHL6",
517 .matches = {
518 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
519 DMI_MATCH(DMI_BOARD_NAME, "COMe-bHL6"),
520 },
521 .driver_data = (void *)&kempld_platform_data_generic,
522 .callback = kempld_create_platform_device,
523 }, {
524 .ident = "BKL6",
525 .matches = {
526 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
527 DMI_MATCH(DMI_BOARD_NAME, "COMe-bKL6"),
528 },
529 .driver_data = (void *)&kempld_platform_data_generic,
530 .callback = kempld_create_platform_device,
531 }, {
532 .ident = "BSL6",
533 .matches = {
534 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
535 DMI_MATCH(DMI_BOARD_NAME, "COMe-bSL6"),
536 },
537 .driver_data = (void *)&kempld_platform_data_generic,
538 .callback = kempld_create_platform_device,
539 }, {
540 .ident = "CAL6",
541 .matches = {
542 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
543 DMI_MATCH(DMI_BOARD_NAME, "COMe-cAL"),
544 },
545 .driver_data = (void *)&kempld_platform_data_generic,
546 .callback = kempld_create_platform_device,
547 }, {
548 .ident = "CBL6",
549 .matches = {
550 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
551 DMI_MATCH(DMI_BOARD_NAME, "COMe-cBL6"),
552 },
553 .driver_data = (void *)&kempld_platform_data_generic,
554 .callback = kempld_create_platform_device,
555 }, {
556 .ident = "CBW6",
557 .matches = {
558 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
559 DMI_MATCH(DMI_BOARD_NAME, "COMe-cBW6"),
560 },
561 .driver_data = (void *)&kempld_platform_data_generic,
562 .callback = kempld_create_platform_device,
563 }, {
564 .ident = "CCR2",
565 .matches = {
566 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
567 DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP2"),
568 },
569 .driver_data = (void *)&kempld_platform_data_generic,
570 .callback = kempld_create_platform_device,
571 }, {
572 .ident = "CCR6",
573 .matches = {
574 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
575 DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP6"),
576 },
577 .driver_data = (void *)&kempld_platform_data_generic,
578 .callback = kempld_create_platform_device,
579 }, {
580 .ident = "CHL6",
581 .matches = {
582 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
583 DMI_MATCH(DMI_BOARD_NAME, "COMe-cHL6"),
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, "ETXexpress-SC T2"),
592 },
593 .driver_data = (void *)&kempld_platform_data_generic,
594 .callback = kempld_create_platform_device,
595 }, {
596 .ident = "CHR2",
597 .matches = {
598 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
599 DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T2"),
600 },
601 .driver_data = (void *)&kempld_platform_data_generic,
602 .callback = kempld_create_platform_device,
603 }, {
604 .ident = "CHR2",
605 .matches = {
606 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
607 DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC2"),
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, "ETXexpress-SC T6"),
616 },
617 .driver_data = (void *)&kempld_platform_data_generic,
618 .callback = kempld_create_platform_device,
619 }, {
620 .ident = "CHR6",
621 .matches = {
622 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
623 DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T6"),
624 },
625 .driver_data = (void *)&kempld_platform_data_generic,
626 .callback = kempld_create_platform_device,
627 }, {
628 .ident = "CHR6",
629 .matches = {
630 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
631 DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC6"),
632 },
633 .driver_data = (void *)&kempld_platform_data_generic,
634 .callback = kempld_create_platform_device,
635 }, {
636 .ident = "CKL6",
637 .matches = {
638 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
639 DMI_MATCH(DMI_BOARD_NAME, "COMe-cKL6"),
640 },
641 .driver_data = (void *)&kempld_platform_data_generic,
642 .callback = kempld_create_platform_device,
643 }, {
644 .ident = "CNTG",
645 .matches = {
646 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
647 DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-PC"),
648 },
649 .driver_data = (void *)&kempld_platform_data_generic,
650 .callback = kempld_create_platform_device,
651 }, {
652 .ident = "CNTG",
653 .matches = {
654 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
655 DMI_MATCH(DMI_BOARD_NAME, "COMe-bPC2"),
656 },
657 .driver_data = (void *)&kempld_platform_data_generic,
658 .callback = kempld_create_platform_device,
659 }, {
660 .ident = "CNTX",
661 .matches = {
662 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
663 DMI_MATCH(DMI_BOARD_NAME, "PXT"),
664 },
665 .driver_data = (void *)&kempld_platform_data_generic,
666 .callback = kempld_create_platform_device,
667 }, {
668 .ident = "CSL6",
669 .matches = {
670 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
671 DMI_MATCH(DMI_BOARD_NAME, "COMe-cSL6"),
672 },
673 .driver_data = (void *)&kempld_platform_data_generic,
674 .callback = kempld_create_platform_device,
675 }, {
676 .ident = "CVV6",
677 .matches = {
678 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
679 DMI_MATCH(DMI_BOARD_NAME, "COMe-cBT"),
680 },
681 .driver_data = (void *)&kempld_platform_data_generic,
682 .callback = kempld_create_platform_device,
683 }, {
684 .ident = "FRI2",
685 .matches = {
686 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
687 DMI_MATCH(DMI_BIOS_VERSION, "FRI2"),
688 },
689 .driver_data = (void *)&kempld_platform_data_generic,
690 .callback = kempld_create_platform_device,
691 }, {
692 .ident = "FRI2",
693 .matches = {
694 DMI_MATCH(DMI_PRODUCT_NAME, "Fish River Island II"),
695 },
696 .driver_data = (void *)&kempld_platform_data_generic,
697 .callback = kempld_create_platform_device,
698 }, {
699 .ident = "MAL1",
700 .matches = {
701 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
702 DMI_MATCH(DMI_BOARD_NAME, "COMe-mAL10"),
703 },
704 .driver_data = (void *)&kempld_platform_data_generic,
705 .callback = kempld_create_platform_device,
706 }, {
707 .ident = "MBR1",
708 .matches = {
709 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
710 DMI_MATCH(DMI_BOARD_NAME, "ETX-OH"),
711 },
712 .driver_data = (void *)&kempld_platform_data_generic,
713 .callback = kempld_create_platform_device,
714 }, {
715 .ident = "MVV1",
716 .matches = {
717 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
718 DMI_MATCH(DMI_BOARD_NAME, "COMe-mBT"),
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, "nanoETXexpress-TT"),
727 },
728 .driver_data = (void *)&kempld_platform_data_generic,
729 .callback = kempld_create_platform_device,
730 }, {
731 .ident = "NTC1",
732 .matches = {
733 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
734 DMI_MATCH(DMI_BOARD_NAME, "nETXe-TT"),
735 },
736 .driver_data = (void *)&kempld_platform_data_generic,
737 .callback = kempld_create_platform_device,
738 }, {
739 .ident = "NTC1",
740 .matches = {
741 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
742 DMI_MATCH(DMI_BOARD_NAME, "COMe-mTT"),
743 },
744 .driver_data = (void *)&kempld_platform_data_generic,
745 .callback = kempld_create_platform_device,
746 }, {
747 .ident = "NUP1",
748 .matches = {
749 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
750 DMI_MATCH(DMI_BOARD_NAME, "COMe-mCT"),
751 },
752 .driver_data = (void *)&kempld_platform_data_generic,
753 .callback = kempld_create_platform_device,
754 }, {
755 .ident = "UNP1",
756 .matches = {
757 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
758 DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-DC"),
759 },
760 .driver_data = (void *)&kempld_platform_data_generic,
761 .callback = kempld_create_platform_device,
762 }, {
763 .ident = "UNP1",
764 .matches = {
765 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
766 DMI_MATCH(DMI_BOARD_NAME, "COMe-cDC2"),
767 },
768 .driver_data = (void *)&kempld_platform_data_generic,
769 .callback = kempld_create_platform_device,
770 }, {
771 .ident = "UNTG",
772 .matches = {
773 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
774 DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-PC"),
775 },
776 .driver_data = (void *)&kempld_platform_data_generic,
777 .callback = kempld_create_platform_device,
778 }, {
779 .ident = "UNTG",
780 .matches = {
781 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
782 DMI_MATCH(DMI_BOARD_NAME, "COMe-cPC2"),
783 },
784 .driver_data = (void *)&kempld_platform_data_generic,
785 .callback = kempld_create_platform_device,
786 }, {
787 .ident = "UUP6",
788 .matches = {
789 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
790 DMI_MATCH(DMI_BOARD_NAME, "COMe-cCT6"),
791 },
792 .driver_data = (void *)&kempld_platform_data_generic,
793 .callback = kempld_create_platform_device,
794 },
795 {
796 .ident = "UTH6",
797 .matches = {
798 DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
799 DMI_MATCH(DMI_BOARD_NAME, "COMe-cTH6"),
800 },
801 .driver_data = (void *)&kempld_platform_data_generic,
802 .callback = kempld_create_platform_device,
803 },
804 {}
805};
806MODULE_DEVICE_TABLE(dmi, kempld_dmi_table);
807
808static int __init kempld_init(void)
809{
810 const struct dmi_system_id *id;
811
812 if (force_device_id[0]) {
813 for (id = kempld_dmi_table;
814 id->matches[0].slot != DMI_NONE; id++)
815 if (strstr(id->ident, force_device_id))
816 if (id->callback && !id->callback(id))
817 break;
818 if (id->matches[0].slot == DMI_NONE)
819 return -ENODEV;
820 } else {
821 if (!dmi_check_system(kempld_dmi_table))
822 return -ENODEV;
823 }
824
825 return platform_driver_register(&kempld_driver);
826}
827
828static void __exit kempld_exit(void)
829{
830 if (kempld_pdev)
831 platform_device_unregister(kempld_pdev);
832
833 platform_driver_unregister(&kempld_driver);
834}
835
836module_init(kempld_init);
837module_exit(kempld_exit);
838
839MODULE_DESCRIPTION("KEM PLD Core Driver");
840MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>");
841MODULE_LICENSE("GPL");
842MODULE_ALIAS("platform:kempld-core");
843