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Merge tag 'v4.6-rockchip-clk2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind...
[linux/fpc-iii.git] / drivers / mfd / lpc_ich.c
blobbd3aa45783460e983add77ab46d32124f46c37a0
1 /*
2 * lpc_ich.c - LPC interface for Intel ICH
3 *
4 * LPC bridge function of the Intel ICH contains many other
5 * functional units, such as Interrupt controllers, Timers,
6 * Power Management, System Management, GPIO, RTC, and LPC
7 * Configuration Registers.
8 *
9 * This driver is derived from lpc_sch.
10
11 * Copyright (c) 2011 Extreme Engineering Solution, Inc.
12 * Author: Aaron Sierra <asierra@xes-inc.com>
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License 2 as published
16 * by the Free Software Foundation.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; see the file COPYING. If not, write to
25 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
26 *
27 * This driver supports the following I/O Controller hubs:
28 * (See the intel documentation on http://developer.intel.com.)
29 * document number 290655-003, 290677-014: 82801AA (ICH), 82801AB (ICHO)
30 * document number 290687-002, 298242-027: 82801BA (ICH2)
31 * document number 290733-003, 290739-013: 82801CA (ICH3-S)
32 * document number 290716-001, 290718-007: 82801CAM (ICH3-M)
33 * document number 290744-001, 290745-025: 82801DB (ICH4)
34 * document number 252337-001, 252663-008: 82801DBM (ICH4-M)
35 * document number 273599-001, 273645-002: 82801E (C-ICH)
36 * document number 252516-001, 252517-028: 82801EB (ICH5), 82801ER (ICH5R)
37 * document number 300641-004, 300884-013: 6300ESB
38 * document number 301473-002, 301474-026: 82801F (ICH6)
39 * document number 313082-001, 313075-006: 631xESB, 632xESB
40 * document number 307013-003, 307014-024: 82801G (ICH7)
41 * document number 322896-001, 322897-001: NM10
42 * document number 313056-003, 313057-017: 82801H (ICH8)
43 * document number 316972-004, 316973-012: 82801I (ICH9)
44 * document number 319973-002, 319974-002: 82801J (ICH10)
45 * document number 322169-001, 322170-003: 5 Series, 3400 Series (PCH)
46 * document number 320066-003, 320257-008: EP80597 (IICH)
47 * document number 324645-001, 324646-001: Cougar Point (CPT)
48 * document number TBD : Patsburg (PBG)
49 * document number TBD : DH89xxCC
50 * document number TBD : Panther Point
51 * document number TBD : Lynx Point
52 * document number TBD : Lynx Point-LP
53 * document number TBD : Wellsburg
54 * document number TBD : Avoton SoC
55 * document number TBD : Coleto Creek
56 * document number TBD : Wildcat Point-LP
57 * document number TBD : 9 Series
58 * document number TBD : Lewisburg
59 */
60
61 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
62
63 #include <linux/kernel.h>
64 #include <linux/module.h>
65 #include <linux/errno.h>
66 #include <linux/acpi.h>
67 #include <linux/pci.h>
68 #include <linux/mfd/core.h>
69 #include <linux/mfd/lpc_ich.h>
70 #include <linux/platform_data/itco_wdt.h>
71
72 #define ACPIBASE 0x40
73 #define ACPIBASE_GPE_OFF 0x28
74 #define ACPIBASE_GPE_END 0x2f
75 #define ACPIBASE_SMI_OFF 0x30
76 #define ACPIBASE_SMI_END 0x33
77 #define ACPIBASE_PMC_OFF 0x08
78 #define ACPIBASE_PMC_END 0x0c
79 #define ACPIBASE_TCO_OFF 0x60
80 #define ACPIBASE_TCO_END 0x7f
81 #define ACPICTRL_PMCBASE 0x44
82
83 #define ACPIBASE_GCS_OFF 0x3410
84 #define ACPIBASE_GCS_END 0x3414
85
86 #define GPIOBASE_ICH0 0x58
87 #define GPIOCTRL_ICH0 0x5C
88 #define GPIOBASE_ICH6 0x48
89 #define GPIOCTRL_ICH6 0x4C
90
91 #define RCBABASE 0xf0
92
93 #define wdt_io_res(i) wdt_res(0, i)
94 #define wdt_mem_res(i) wdt_res(ICH_RES_MEM_OFF, i)
95 #define wdt_res(b, i) (&wdt_ich_res[(b) + (i)])
96
97 struct lpc_ich_priv {
98 int chipset;
99
100 int abase; /* ACPI base */
101 int actrl_pbase; /* ACPI control or PMC base */
102 int gbase; /* GPIO base */
103 int gctrl; /* GPIO control */
104
105 int abase_save; /* Cached ACPI base value */
106 int actrl_pbase_save; /* Cached ACPI control or PMC base value */
107 int gctrl_save; /* Cached GPIO control value */
108 };
109
110 static struct resource wdt_ich_res[] = {
111 /* ACPI - TCO */
112 {
113 .flags = IORESOURCE_IO,
114 },
115 /* ACPI - SMI */
116 {
117 .flags = IORESOURCE_IO,
118 },
119 /* GCS or PMC */
120 {
121 .flags = IORESOURCE_MEM,
122 },
123 };
124
125 static struct resource gpio_ich_res[] = {
126 /* GPIO */
127 {
128 .flags = IORESOURCE_IO,
129 },
130 /* ACPI - GPE0 */
131 {
132 .flags = IORESOURCE_IO,
133 },
134 };
135
136 static struct mfd_cell lpc_ich_wdt_cell = {
137 .name = "iTCO_wdt",
138 .num_resources = ARRAY_SIZE(wdt_ich_res),
139 .resources = wdt_ich_res,
140 .ignore_resource_conflicts = true,
141 };
142
143 static struct mfd_cell lpc_ich_gpio_cell = {
144 .name = "gpio_ich",
145 .num_resources = ARRAY_SIZE(gpio_ich_res),
146 .resources = gpio_ich_res,
147 .ignore_resource_conflicts = true,
148 };
149
150 /* chipset related info */
151 enum lpc_chipsets {
152 LPC_ICH = 0, /* ICH */
153 LPC_ICH0, /* ICH0 */
154 LPC_ICH2, /* ICH2 */
155 LPC_ICH2M, /* ICH2-M */
156 LPC_ICH3, /* ICH3-S */
157 LPC_ICH3M, /* ICH3-M */
158 LPC_ICH4, /* ICH4 */
159 LPC_ICH4M, /* ICH4-M */
160 LPC_CICH, /* C-ICH */
161 LPC_ICH5, /* ICH5 & ICH5R */
162 LPC_6300ESB, /* 6300ESB */
163 LPC_ICH6, /* ICH6 & ICH6R */
164 LPC_ICH6M, /* ICH6-M */
165 LPC_ICH6W, /* ICH6W & ICH6RW */
166 LPC_631XESB, /* 631xESB/632xESB */
167 LPC_ICH7, /* ICH7 & ICH7R */
168 LPC_ICH7DH, /* ICH7DH */
169 LPC_ICH7M, /* ICH7-M & ICH7-U */
170 LPC_ICH7MDH, /* ICH7-M DH */
171 LPC_NM10, /* NM10 */
172 LPC_ICH8, /* ICH8 & ICH8R */
173 LPC_ICH8DH, /* ICH8DH */
174 LPC_ICH8DO, /* ICH8DO */
175 LPC_ICH8M, /* ICH8M */
176 LPC_ICH8ME, /* ICH8M-E */
177 LPC_ICH9, /* ICH9 */
178 LPC_ICH9R, /* ICH9R */
179 LPC_ICH9DH, /* ICH9DH */
180 LPC_ICH9DO, /* ICH9DO */
181 LPC_ICH9M, /* ICH9M */
182 LPC_ICH9ME, /* ICH9M-E */
183 LPC_ICH10, /* ICH10 */
184 LPC_ICH10R, /* ICH10R */
185 LPC_ICH10D, /* ICH10D */
186 LPC_ICH10DO, /* ICH10DO */
187 LPC_PCH, /* PCH Desktop Full Featured */
188 LPC_PCHM, /* PCH Mobile Full Featured */
189 LPC_P55, /* P55 */
190 LPC_PM55, /* PM55 */
191 LPC_H55, /* H55 */
192 LPC_QM57, /* QM57 */
193 LPC_H57, /* H57 */
194 LPC_HM55, /* HM55 */
195 LPC_Q57, /* Q57 */
196 LPC_HM57, /* HM57 */
197 LPC_PCHMSFF, /* PCH Mobile SFF Full Featured */
198 LPC_QS57, /* QS57 */
199 LPC_3400, /* 3400 */
200 LPC_3420, /* 3420 */
201 LPC_3450, /* 3450 */
202 LPC_EP80579, /* EP80579 */
203 LPC_CPT, /* Cougar Point */
204 LPC_CPTD, /* Cougar Point Desktop */
205 LPC_CPTM, /* Cougar Point Mobile */
206 LPC_PBG, /* Patsburg */
207 LPC_DH89XXCC, /* DH89xxCC */
208 LPC_PPT, /* Panther Point */
209 LPC_LPT, /* Lynx Point */
210 LPC_LPT_LP, /* Lynx Point-LP */
211 LPC_WBG, /* Wellsburg */
212 LPC_AVN, /* Avoton SoC */
213 LPC_BAYTRAIL, /* Bay Trail SoC */
214 LPC_COLETO, /* Coleto Creek */
215 LPC_WPT_LP, /* Wildcat Point-LP */
216 LPC_BRASWELL, /* Braswell SoC */
217 LPC_LEWISBURG, /* Lewisburg */
218 LPC_9S, /* 9 Series */
219 };
220
221 static struct lpc_ich_info lpc_chipset_info[] = {
222 [LPC_ICH] = {
223 .name = "ICH",
224 .iTCO_version = 1,
225 },
226 [LPC_ICH0] = {
227 .name = "ICH0",
228 .iTCO_version = 1,
229 },
230 [LPC_ICH2] = {
231 .name = "ICH2",
232 .iTCO_version = 1,
233 },
234 [LPC_ICH2M] = {
235 .name = "ICH2-M",
236 .iTCO_version = 1,
237 },
238 [LPC_ICH3] = {
239 .name = "ICH3-S",
240 .iTCO_version = 1,
241 },
242 [LPC_ICH3M] = {
243 .name = "ICH3-M",
244 .iTCO_version = 1,
245 },
246 [LPC_ICH4] = {
247 .name = "ICH4",
248 .iTCO_version = 1,
249 },
250 [LPC_ICH4M] = {
251 .name = "ICH4-M",
252 .iTCO_version = 1,
253 },
254 [LPC_CICH] = {
255 .name = "C-ICH",
256 .iTCO_version = 1,
257 },
258 [LPC_ICH5] = {
259 .name = "ICH5 or ICH5R",
260 .iTCO_version = 1,
261 },
262 [LPC_6300ESB] = {
263 .name = "6300ESB",
264 .iTCO_version = 1,
265 },
266 [LPC_ICH6] = {
267 .name = "ICH6 or ICH6R",
268 .iTCO_version = 2,
269 .gpio_version = ICH_V6_GPIO,
270 },
271 [LPC_ICH6M] = {
272 .name = "ICH6-M",
273 .iTCO_version = 2,
274 .gpio_version = ICH_V6_GPIO,
275 },
276 [LPC_ICH6W] = {
277 .name = "ICH6W or ICH6RW",
278 .iTCO_version = 2,
279 .gpio_version = ICH_V6_GPIO,
280 },
281 [LPC_631XESB] = {
282 .name = "631xESB/632xESB",
283 .iTCO_version = 2,
284 .gpio_version = ICH_V6_GPIO,
285 },
286 [LPC_ICH7] = {
287 .name = "ICH7 or ICH7R",
288 .iTCO_version = 2,
289 .gpio_version = ICH_V7_GPIO,
290 },
291 [LPC_ICH7DH] = {
292 .name = "ICH7DH",
293 .iTCO_version = 2,
294 .gpio_version = ICH_V7_GPIO,
295 },
296 [LPC_ICH7M] = {
297 .name = "ICH7-M or ICH7-U",
298 .iTCO_version = 2,
299 .gpio_version = ICH_V7_GPIO,
300 },
301 [LPC_ICH7MDH] = {
302 .name = "ICH7-M DH",
303 .iTCO_version = 2,
304 .gpio_version = ICH_V7_GPIO,
305 },
306 [LPC_NM10] = {
307 .name = "NM10",
308 .iTCO_version = 2,
309 .gpio_version = ICH_V7_GPIO,
310 },
311 [LPC_ICH8] = {
312 .name = "ICH8 or ICH8R",
313 .iTCO_version = 2,
314 .gpio_version = ICH_V7_GPIO,
315 },
316 [LPC_ICH8DH] = {
317 .name = "ICH8DH",
318 .iTCO_version = 2,
319 .gpio_version = ICH_V7_GPIO,
320 },
321 [LPC_ICH8DO] = {
322 .name = "ICH8DO",
323 .iTCO_version = 2,
324 .gpio_version = ICH_V7_GPIO,
325 },
326 [LPC_ICH8M] = {
327 .name = "ICH8M",
328 .iTCO_version = 2,
329 .gpio_version = ICH_V7_GPIO,
330 },
331 [LPC_ICH8ME] = {
332 .name = "ICH8M-E",
333 .iTCO_version = 2,
334 .gpio_version = ICH_V7_GPIO,
335 },
336 [LPC_ICH9] = {
337 .name = "ICH9",
338 .iTCO_version = 2,
339 .gpio_version = ICH_V9_GPIO,
340 },
341 [LPC_ICH9R] = {
342 .name = "ICH9R",
343 .iTCO_version = 2,
344 .gpio_version = ICH_V9_GPIO,
345 },
346 [LPC_ICH9DH] = {
347 .name = "ICH9DH",
348 .iTCO_version = 2,
349 .gpio_version = ICH_V9_GPIO,
350 },
351 [LPC_ICH9DO] = {
352 .name = "ICH9DO",
353 .iTCO_version = 2,
354 .gpio_version = ICH_V9_GPIO,
355 },
356 [LPC_ICH9M] = {
357 .name = "ICH9M",
358 .iTCO_version = 2,
359 .gpio_version = ICH_V9_GPIO,
360 },
361 [LPC_ICH9ME] = {
362 .name = "ICH9M-E",
363 .iTCO_version = 2,
364 .gpio_version = ICH_V9_GPIO,
365 },
366 [LPC_ICH10] = {
367 .name = "ICH10",
368 .iTCO_version = 2,
369 .gpio_version = ICH_V10CONS_GPIO,
370 },
371 [LPC_ICH10R] = {
372 .name = "ICH10R",
373 .iTCO_version = 2,
374 .gpio_version = ICH_V10CONS_GPIO,
375 },
376 [LPC_ICH10D] = {
377 .name = "ICH10D",
378 .iTCO_version = 2,
379 .gpio_version = ICH_V10CORP_GPIO,
380 },
381 [LPC_ICH10DO] = {
382 .name = "ICH10DO",
383 .iTCO_version = 2,
384 .gpio_version = ICH_V10CORP_GPIO,
385 },
386 [LPC_PCH] = {
387 .name = "PCH Desktop Full Featured",
388 .iTCO_version = 2,
389 .gpio_version = ICH_V5_GPIO,
390 },
391 [LPC_PCHM] = {
392 .name = "PCH Mobile Full Featured",
393 .iTCO_version = 2,
394 .gpio_version = ICH_V5_GPIO,
395 },
396 [LPC_P55] = {
397 .name = "P55",
398 .iTCO_version = 2,
399 .gpio_version = ICH_V5_GPIO,
400 },
401 [LPC_PM55] = {
402 .name = "PM55",
403 .iTCO_version = 2,
404 .gpio_version = ICH_V5_GPIO,
405 },
406 [LPC_H55] = {
407 .name = "H55",
408 .iTCO_version = 2,
409 .gpio_version = ICH_V5_GPIO,
410 },
411 [LPC_QM57] = {
412 .name = "QM57",
413 .iTCO_version = 2,
414 .gpio_version = ICH_V5_GPIO,
415 },
416 [LPC_H57] = {
417 .name = "H57",
418 .iTCO_version = 2,
419 .gpio_version = ICH_V5_GPIO,
420 },
421 [LPC_HM55] = {
422 .name = "HM55",
423 .iTCO_version = 2,
424 .gpio_version = ICH_V5_GPIO,
425 },
426 [LPC_Q57] = {
427 .name = "Q57",
428 .iTCO_version = 2,
429 .gpio_version = ICH_V5_GPIO,
430 },
431 [LPC_HM57] = {
432 .name = "HM57",
433 .iTCO_version = 2,
434 .gpio_version = ICH_V5_GPIO,
435 },
436 [LPC_PCHMSFF] = {
437 .name = "PCH Mobile SFF Full Featured",
438 .iTCO_version = 2,
439 .gpio_version = ICH_V5_GPIO,
440 },
441 [LPC_QS57] = {
442 .name = "QS57",
443 .iTCO_version = 2,
444 .gpio_version = ICH_V5_GPIO,
445 },
446 [LPC_3400] = {
447 .name = "3400",
448 .iTCO_version = 2,
449 .gpio_version = ICH_V5_GPIO,
450 },
451 [LPC_3420] = {
452 .name = "3420",
453 .iTCO_version = 2,
454 .gpio_version = ICH_V5_GPIO,
455 },
456 [LPC_3450] = {
457 .name = "3450",
458 .iTCO_version = 2,
459 .gpio_version = ICH_V5_GPIO,
460 },
461 [LPC_EP80579] = {
462 .name = "EP80579",
463 .iTCO_version = 2,
464 },
465 [LPC_CPT] = {
466 .name = "Cougar Point",
467 .iTCO_version = 2,
468 .gpio_version = ICH_V5_GPIO,
469 },
470 [LPC_CPTD] = {
471 .name = "Cougar Point Desktop",
472 .iTCO_version = 2,
473 .gpio_version = ICH_V5_GPIO,
474 },
475 [LPC_CPTM] = {
476 .name = "Cougar Point Mobile",
477 .iTCO_version = 2,
478 .gpio_version = ICH_V5_GPIO,
479 },
480 [LPC_PBG] = {
481 .name = "Patsburg",
482 .iTCO_version = 2,
483 },
484 [LPC_DH89XXCC] = {
485 .name = "DH89xxCC",
486 .iTCO_version = 2,
487 },
488 [LPC_PPT] = {
489 .name = "Panther Point",
490 .iTCO_version = 2,
491 .gpio_version = ICH_V5_GPIO,
492 },
493 [LPC_LPT] = {
494 .name = "Lynx Point",
495 .iTCO_version = 2,
496 },
497 [LPC_LPT_LP] = {
498 .name = "Lynx Point_LP",
499 .iTCO_version = 2,
500 },
501 [LPC_WBG] = {
502 .name = "Wellsburg",
503 .iTCO_version = 2,
504 },
505 [LPC_AVN] = {
506 .name = "Avoton SoC",
507 .iTCO_version = 3,
508 .gpio_version = AVOTON_GPIO,
509 },
510 [LPC_BAYTRAIL] = {
511 .name = "Bay Trail SoC",
512 .iTCO_version = 3,
513 },
514 [LPC_COLETO] = {
515 .name = "Coleto Creek",
516 .iTCO_version = 2,
517 },
518 [LPC_WPT_LP] = {
519 .name = "Wildcat Point_LP",
520 .iTCO_version = 2,
521 },
522 [LPC_BRASWELL] = {
523 .name = "Braswell SoC",
524 .iTCO_version = 3,
525 },
526 [LPC_LEWISBURG] = {
527 .name = "Lewisburg",
528 .iTCO_version = 2,
529 },
530 [LPC_9S] = {
531 .name = "9 Series",
532 .iTCO_version = 2,
533 },
534 };
535
536 /*
537 * This data only exists for exporting the supported PCI ids
538 * via MODULE_DEVICE_TABLE. We do not actually register a
539 * pci_driver, because the I/O Controller Hub has also other
540 * functions that probably will be registered by other drivers.
541 */
542 static const struct pci_device_id lpc_ich_ids[] = {
543 { PCI_VDEVICE(INTEL, 0x0f1c), LPC_BAYTRAIL},
544 { PCI_VDEVICE(INTEL, 0x1c41), LPC_CPT},
545 { PCI_VDEVICE(INTEL, 0x1c42), LPC_CPTD},
546 { PCI_VDEVICE(INTEL, 0x1c43), LPC_CPTM},
547 { PCI_VDEVICE(INTEL, 0x1c44), LPC_CPT},
548 { PCI_VDEVICE(INTEL, 0x1c45), LPC_CPT},
549 { PCI_VDEVICE(INTEL, 0x1c46), LPC_CPT},
550 { PCI_VDEVICE(INTEL, 0x1c47), LPC_CPT},
551 { PCI_VDEVICE(INTEL, 0x1c48), LPC_CPT},
552 { PCI_VDEVICE(INTEL, 0x1c49), LPC_CPT},
553 { PCI_VDEVICE(INTEL, 0x1c4a), LPC_CPT},
554 { PCI_VDEVICE(INTEL, 0x1c4b), LPC_CPT},
555 { PCI_VDEVICE(INTEL, 0x1c4c), LPC_CPT},
556 { PCI_VDEVICE(INTEL, 0x1c4d), LPC_CPT},
557 { PCI_VDEVICE(INTEL, 0x1c4e), LPC_CPT},
558 { PCI_VDEVICE(INTEL, 0x1c4f), LPC_CPT},
559 { PCI_VDEVICE(INTEL, 0x1c50), LPC_CPT},
560 { PCI_VDEVICE(INTEL, 0x1c51), LPC_CPT},
561 { PCI_VDEVICE(INTEL, 0x1c52), LPC_CPT},
562 { PCI_VDEVICE(INTEL, 0x1c53), LPC_CPT},
563 { PCI_VDEVICE(INTEL, 0x1c54), LPC_CPT},
564 { PCI_VDEVICE(INTEL, 0x1c55), LPC_CPT},
565 { PCI_VDEVICE(INTEL, 0x1c56), LPC_CPT},
566 { PCI_VDEVICE(INTEL, 0x1c57), LPC_CPT},
567 { PCI_VDEVICE(INTEL, 0x1c58), LPC_CPT},
568 { PCI_VDEVICE(INTEL, 0x1c59), LPC_CPT},
569 { PCI_VDEVICE(INTEL, 0x1c5a), LPC_CPT},
570 { PCI_VDEVICE(INTEL, 0x1c5b), LPC_CPT},
571 { PCI_VDEVICE(INTEL, 0x1c5c), LPC_CPT},
572 { PCI_VDEVICE(INTEL, 0x1c5d), LPC_CPT},
573 { PCI_VDEVICE(INTEL, 0x1c5e), LPC_CPT},
574 { PCI_VDEVICE(INTEL, 0x1c5f), LPC_CPT},
575 { PCI_VDEVICE(INTEL, 0x1d40), LPC_PBG},
576 { PCI_VDEVICE(INTEL, 0x1d41), LPC_PBG},
577 { PCI_VDEVICE(INTEL, 0x1e40), LPC_PPT},
578 { PCI_VDEVICE(INTEL, 0x1e41), LPC_PPT},
579 { PCI_VDEVICE(INTEL, 0x1e42), LPC_PPT},
580 { PCI_VDEVICE(INTEL, 0x1e43), LPC_PPT},
581 { PCI_VDEVICE(INTEL, 0x1e44), LPC_PPT},
582 { PCI_VDEVICE(INTEL, 0x1e45), LPC_PPT},
583 { PCI_VDEVICE(INTEL, 0x1e46), LPC_PPT},
584 { PCI_VDEVICE(INTEL, 0x1e47), LPC_PPT},
585 { PCI_VDEVICE(INTEL, 0x1e48), LPC_PPT},
586 { PCI_VDEVICE(INTEL, 0x1e49), LPC_PPT},
587 { PCI_VDEVICE(INTEL, 0x1e4a), LPC_PPT},
588 { PCI_VDEVICE(INTEL, 0x1e4b), LPC_PPT},
589 { PCI_VDEVICE(INTEL, 0x1e4c), LPC_PPT},
590 { PCI_VDEVICE(INTEL, 0x1e4d), LPC_PPT},
591 { PCI_VDEVICE(INTEL, 0x1e4e), LPC_PPT},
592 { PCI_VDEVICE(INTEL, 0x1e4f), LPC_PPT},
593 { PCI_VDEVICE(INTEL, 0x1e50), LPC_PPT},
594 { PCI_VDEVICE(INTEL, 0x1e51), LPC_PPT},
595 { PCI_VDEVICE(INTEL, 0x1e52), LPC_PPT},
596 { PCI_VDEVICE(INTEL, 0x1e53), LPC_PPT},
597 { PCI_VDEVICE(INTEL, 0x1e54), LPC_PPT},
598 { PCI_VDEVICE(INTEL, 0x1e55), LPC_PPT},
599 { PCI_VDEVICE(INTEL, 0x1e56), LPC_PPT},
600 { PCI_VDEVICE(INTEL, 0x1e57), LPC_PPT},
601 { PCI_VDEVICE(INTEL, 0x1e58), LPC_PPT},
602 { PCI_VDEVICE(INTEL, 0x1e59), LPC_PPT},
603 { PCI_VDEVICE(INTEL, 0x1e5a), LPC_PPT},
604 { PCI_VDEVICE(INTEL, 0x1e5b), LPC_PPT},
605 { PCI_VDEVICE(INTEL, 0x1e5c), LPC_PPT},
606 { PCI_VDEVICE(INTEL, 0x1e5d), LPC_PPT},
607 { PCI_VDEVICE(INTEL, 0x1e5e), LPC_PPT},
608 { PCI_VDEVICE(INTEL, 0x1e5f), LPC_PPT},
609 { PCI_VDEVICE(INTEL, 0x1f38), LPC_AVN},
610 { PCI_VDEVICE(INTEL, 0x1f39), LPC_AVN},
611 { PCI_VDEVICE(INTEL, 0x1f3a), LPC_AVN},
612 { PCI_VDEVICE(INTEL, 0x1f3b), LPC_AVN},
613 { PCI_VDEVICE(INTEL, 0x229c), LPC_BRASWELL},
614 { PCI_VDEVICE(INTEL, 0x2310), LPC_DH89XXCC},
615 { PCI_VDEVICE(INTEL, 0x2390), LPC_COLETO},
616 { PCI_VDEVICE(INTEL, 0x2410), LPC_ICH},
617 { PCI_VDEVICE(INTEL, 0x2420), LPC_ICH0},
618 { PCI_VDEVICE(INTEL, 0x2440), LPC_ICH2},
619 { PCI_VDEVICE(INTEL, 0x244c), LPC_ICH2M},
620 { PCI_VDEVICE(INTEL, 0x2450), LPC_CICH},
621 { PCI_VDEVICE(INTEL, 0x2480), LPC_ICH3},
622 { PCI_VDEVICE(INTEL, 0x248c), LPC_ICH3M},
623 { PCI_VDEVICE(INTEL, 0x24c0), LPC_ICH4},
624 { PCI_VDEVICE(INTEL, 0x24cc), LPC_ICH4M},
625 { PCI_VDEVICE(INTEL, 0x24d0), LPC_ICH5},
626 { PCI_VDEVICE(INTEL, 0x25a1), LPC_6300ESB},
627 { PCI_VDEVICE(INTEL, 0x2640), LPC_ICH6},
628 { PCI_VDEVICE(INTEL, 0x2641), LPC_ICH6M},
629 { PCI_VDEVICE(INTEL, 0x2642), LPC_ICH6W},
630 { PCI_VDEVICE(INTEL, 0x2670), LPC_631XESB},
631 { PCI_VDEVICE(INTEL, 0x2671), LPC_631XESB},
632 { PCI_VDEVICE(INTEL, 0x2672), LPC_631XESB},
633 { PCI_VDEVICE(INTEL, 0x2673), LPC_631XESB},
634 { PCI_VDEVICE(INTEL, 0x2674), LPC_631XESB},
635 { PCI_VDEVICE(INTEL, 0x2675), LPC_631XESB},
636 { PCI_VDEVICE(INTEL, 0x2676), LPC_631XESB},
637 { PCI_VDEVICE(INTEL, 0x2677), LPC_631XESB},
638 { PCI_VDEVICE(INTEL, 0x2678), LPC_631XESB},
639 { PCI_VDEVICE(INTEL, 0x2679), LPC_631XESB},
640 { PCI_VDEVICE(INTEL, 0x267a), LPC_631XESB},
641 { PCI_VDEVICE(INTEL, 0x267b), LPC_631XESB},
642 { PCI_VDEVICE(INTEL, 0x267c), LPC_631XESB},
643 { PCI_VDEVICE(INTEL, 0x267d), LPC_631XESB},
644 { PCI_VDEVICE(INTEL, 0x267e), LPC_631XESB},
645 { PCI_VDEVICE(INTEL, 0x267f), LPC_631XESB},
646 { PCI_VDEVICE(INTEL, 0x27b0), LPC_ICH7DH},
647 { PCI_VDEVICE(INTEL, 0x27b8), LPC_ICH7},
648 { PCI_VDEVICE(INTEL, 0x27b9), LPC_ICH7M},
649 { PCI_VDEVICE(INTEL, 0x27bc), LPC_NM10},
650 { PCI_VDEVICE(INTEL, 0x27bd), LPC_ICH7MDH},
651 { PCI_VDEVICE(INTEL, 0x2810), LPC_ICH8},
652 { PCI_VDEVICE(INTEL, 0x2811), LPC_ICH8ME},
653 { PCI_VDEVICE(INTEL, 0x2812), LPC_ICH8DH},
654 { PCI_VDEVICE(INTEL, 0x2814), LPC_ICH8DO},
655 { PCI_VDEVICE(INTEL, 0x2815), LPC_ICH8M},
656 { PCI_VDEVICE(INTEL, 0x2912), LPC_ICH9DH},
657 { PCI_VDEVICE(INTEL, 0x2914), LPC_ICH9DO},
658 { PCI_VDEVICE(INTEL, 0x2916), LPC_ICH9R},
659 { PCI_VDEVICE(INTEL, 0x2917), LPC_ICH9ME},
660 { PCI_VDEVICE(INTEL, 0x2918), LPC_ICH9},
661 { PCI_VDEVICE(INTEL, 0x2919), LPC_ICH9M},
662 { PCI_VDEVICE(INTEL, 0x3a14), LPC_ICH10DO},
663 { PCI_VDEVICE(INTEL, 0x3a16), LPC_ICH10R},
664 { PCI_VDEVICE(INTEL, 0x3a18), LPC_ICH10},
665 { PCI_VDEVICE(INTEL, 0x3a1a), LPC_ICH10D},
666 { PCI_VDEVICE(INTEL, 0x3b00), LPC_PCH},
667 { PCI_VDEVICE(INTEL, 0x3b01), LPC_PCHM},
668 { PCI_VDEVICE(INTEL, 0x3b02), LPC_P55},
669 { PCI_VDEVICE(INTEL, 0x3b03), LPC_PM55},
670 { PCI_VDEVICE(INTEL, 0x3b06), LPC_H55},
671 { PCI_VDEVICE(INTEL, 0x3b07), LPC_QM57},
672 { PCI_VDEVICE(INTEL, 0x3b08), LPC_H57},
673 { PCI_VDEVICE(INTEL, 0x3b09), LPC_HM55},
674 { PCI_VDEVICE(INTEL, 0x3b0a), LPC_Q57},
675 { PCI_VDEVICE(INTEL, 0x3b0b), LPC_HM57},
676 { PCI_VDEVICE(INTEL, 0x3b0d), LPC_PCHMSFF},
677 { PCI_VDEVICE(INTEL, 0x3b0f), LPC_QS57},
678 { PCI_VDEVICE(INTEL, 0x3b12), LPC_3400},
679 { PCI_VDEVICE(INTEL, 0x3b14), LPC_3420},
680 { PCI_VDEVICE(INTEL, 0x3b16), LPC_3450},
681 { PCI_VDEVICE(INTEL, 0x5031), LPC_EP80579},
682 { PCI_VDEVICE(INTEL, 0x8c40), LPC_LPT},
683 { PCI_VDEVICE(INTEL, 0x8c41), LPC_LPT},
684 { PCI_VDEVICE(INTEL, 0x8c42), LPC_LPT},
685 { PCI_VDEVICE(INTEL, 0x8c43), LPC_LPT},
686 { PCI_VDEVICE(INTEL, 0x8c44), LPC_LPT},
687 { PCI_VDEVICE(INTEL, 0x8c45), LPC_LPT},
688 { PCI_VDEVICE(INTEL, 0x8c46), LPC_LPT},
689 { PCI_VDEVICE(INTEL, 0x8c47), LPC_LPT},
690 { PCI_VDEVICE(INTEL, 0x8c48), LPC_LPT},
691 { PCI_VDEVICE(INTEL, 0x8c49), LPC_LPT},
692 { PCI_VDEVICE(INTEL, 0x8c4a), LPC_LPT},
693 { PCI_VDEVICE(INTEL, 0x8c4b), LPC_LPT},
694 { PCI_VDEVICE(INTEL, 0x8c4c), LPC_LPT},
695 { PCI_VDEVICE(INTEL, 0x8c4d), LPC_LPT},
696 { PCI_VDEVICE(INTEL, 0x8c4e), LPC_LPT},
697 { PCI_VDEVICE(INTEL, 0x8c4f), LPC_LPT},
698 { PCI_VDEVICE(INTEL, 0x8c50), LPC_LPT},
699 { PCI_VDEVICE(INTEL, 0x8c51), LPC_LPT},
700 { PCI_VDEVICE(INTEL, 0x8c52), LPC_LPT},
701 { PCI_VDEVICE(INTEL, 0x8c53), LPC_LPT},
702 { PCI_VDEVICE(INTEL, 0x8c54), LPC_LPT},
703 { PCI_VDEVICE(INTEL, 0x8c55), LPC_LPT},
704 { PCI_VDEVICE(INTEL, 0x8c56), LPC_LPT},
705 { PCI_VDEVICE(INTEL, 0x8c57), LPC_LPT},
706 { PCI_VDEVICE(INTEL, 0x8c58), LPC_LPT},
707 { PCI_VDEVICE(INTEL, 0x8c59), LPC_LPT},
708 { PCI_VDEVICE(INTEL, 0x8c5a), LPC_LPT},
709 { PCI_VDEVICE(INTEL, 0x8c5b), LPC_LPT},
710 { PCI_VDEVICE(INTEL, 0x8c5c), LPC_LPT},
711 { PCI_VDEVICE(INTEL, 0x8c5d), LPC_LPT},
712 { PCI_VDEVICE(INTEL, 0x8c5e), LPC_LPT},
713 { PCI_VDEVICE(INTEL, 0x8c5f), LPC_LPT},
714 { PCI_VDEVICE(INTEL, 0x8cc1), LPC_9S},
715 { PCI_VDEVICE(INTEL, 0x8cc2), LPC_9S},
716 { PCI_VDEVICE(INTEL, 0x8cc3), LPC_9S},
717 { PCI_VDEVICE(INTEL, 0x8cc4), LPC_9S},
718 { PCI_VDEVICE(INTEL, 0x8cc6), LPC_9S},
719 { PCI_VDEVICE(INTEL, 0x8d40), LPC_WBG},
720 { PCI_VDEVICE(INTEL, 0x8d41), LPC_WBG},
721 { PCI_VDEVICE(INTEL, 0x8d42), LPC_WBG},
722 { PCI_VDEVICE(INTEL, 0x8d43), LPC_WBG},
723 { PCI_VDEVICE(INTEL, 0x8d44), LPC_WBG},
724 { PCI_VDEVICE(INTEL, 0x8d45), LPC_WBG},
725 { PCI_VDEVICE(INTEL, 0x8d46), LPC_WBG},
726 { PCI_VDEVICE(INTEL, 0x8d47), LPC_WBG},
727 { PCI_VDEVICE(INTEL, 0x8d48), LPC_WBG},
728 { PCI_VDEVICE(INTEL, 0x8d49), LPC_WBG},
729 { PCI_VDEVICE(INTEL, 0x8d4a), LPC_WBG},
730 { PCI_VDEVICE(INTEL, 0x8d4b), LPC_WBG},
731 { PCI_VDEVICE(INTEL, 0x8d4c), LPC_WBG},
732 { PCI_VDEVICE(INTEL, 0x8d4d), LPC_WBG},
733 { PCI_VDEVICE(INTEL, 0x8d4e), LPC_WBG},
734 { PCI_VDEVICE(INTEL, 0x8d4f), LPC_WBG},
735 { PCI_VDEVICE(INTEL, 0x8d50), LPC_WBG},
736 { PCI_VDEVICE(INTEL, 0x8d51), LPC_WBG},
737 { PCI_VDEVICE(INTEL, 0x8d52), LPC_WBG},
738 { PCI_VDEVICE(INTEL, 0x8d53), LPC_WBG},
739 { PCI_VDEVICE(INTEL, 0x8d54), LPC_WBG},
740 { PCI_VDEVICE(INTEL, 0x8d55), LPC_WBG},
741 { PCI_VDEVICE(INTEL, 0x8d56), LPC_WBG},
742 { PCI_VDEVICE(INTEL, 0x8d57), LPC_WBG},
743 { PCI_VDEVICE(INTEL, 0x8d58), LPC_WBG},
744 { PCI_VDEVICE(INTEL, 0x8d59), LPC_WBG},
745 { PCI_VDEVICE(INTEL, 0x8d5a), LPC_WBG},
746 { PCI_VDEVICE(INTEL, 0x8d5b), LPC_WBG},
747 { PCI_VDEVICE(INTEL, 0x8d5c), LPC_WBG},
748 { PCI_VDEVICE(INTEL, 0x8d5d), LPC_WBG},
749 { PCI_VDEVICE(INTEL, 0x8d5e), LPC_WBG},
750 { PCI_VDEVICE(INTEL, 0x8d5f), LPC_WBG},
751 { PCI_VDEVICE(INTEL, 0x9c40), LPC_LPT_LP},
752 { PCI_VDEVICE(INTEL, 0x9c41), LPC_LPT_LP},
753 { PCI_VDEVICE(INTEL, 0x9c42), LPC_LPT_LP},
754 { PCI_VDEVICE(INTEL, 0x9c43), LPC_LPT_LP},
755 { PCI_VDEVICE(INTEL, 0x9c44), LPC_LPT_LP},
756 { PCI_VDEVICE(INTEL, 0x9c45), LPC_LPT_LP},
757 { PCI_VDEVICE(INTEL, 0x9c46), LPC_LPT_LP},
758 { PCI_VDEVICE(INTEL, 0x9c47), LPC_LPT_LP},
759 { PCI_VDEVICE(INTEL, 0x9cc1), LPC_WPT_LP},
760 { PCI_VDEVICE(INTEL, 0x9cc2), LPC_WPT_LP},
761 { PCI_VDEVICE(INTEL, 0x9cc3), LPC_WPT_LP},
762 { PCI_VDEVICE(INTEL, 0x9cc5), LPC_WPT_LP},
763 { PCI_VDEVICE(INTEL, 0x9cc6), LPC_WPT_LP},
764 { PCI_VDEVICE(INTEL, 0x9cc7), LPC_WPT_LP},
765 { PCI_VDEVICE(INTEL, 0x9cc9), LPC_WPT_LP},
766 { PCI_VDEVICE(INTEL, 0xa1c1), LPC_LEWISBURG},
767 { PCI_VDEVICE(INTEL, 0xa1c2), LPC_LEWISBURG},
768 { PCI_VDEVICE(INTEL, 0xa1c3), LPC_LEWISBURG},
769 { PCI_VDEVICE(INTEL, 0xa1c4), LPC_LEWISBURG},
770 { PCI_VDEVICE(INTEL, 0xa1c5), LPC_LEWISBURG},
771 { PCI_VDEVICE(INTEL, 0xa1c6), LPC_LEWISBURG},
772 { PCI_VDEVICE(INTEL, 0xa1c7), LPC_LEWISBURG},
773 { PCI_VDEVICE(INTEL, 0xa242), LPC_LEWISBURG},
774 { PCI_VDEVICE(INTEL, 0xa243), LPC_LEWISBURG},
775 { 0, }, /* End of list */
776 };
777 MODULE_DEVICE_TABLE(pci, lpc_ich_ids);
778
779 static void lpc_ich_restore_config_space(struct pci_dev *dev)
780 {
781 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
782
783 if (priv->abase_save >= 0) {
784 pci_write_config_byte(dev, priv->abase, priv->abase_save);
785 priv->abase_save = -1;
786 }
787
788 if (priv->actrl_pbase_save >= 0) {
789 pci_write_config_byte(dev, priv->actrl_pbase,
790 priv->actrl_pbase_save);
791 priv->actrl_pbase_save = -1;
792 }
793
794 if (priv->gctrl_save >= 0) {
795 pci_write_config_byte(dev, priv->gctrl, priv->gctrl_save);
796 priv->gctrl_save = -1;
797 }
798 }
799
800 static void lpc_ich_enable_acpi_space(struct pci_dev *dev)
801 {
802 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
803 u8 reg_save;
804
805 switch (lpc_chipset_info[priv->chipset].iTCO_version) {
806 case 3:
807 /*
808 * Some chipsets (eg Avoton) enable the ACPI space in the
809 * ACPI BASE register.
810 */
811 pci_read_config_byte(dev, priv->abase, &reg_save);
812 pci_write_config_byte(dev, priv->abase, reg_save | 0x2);
813 priv->abase_save = reg_save;
814 break;
815 default:
816 /*
817 * Most chipsets enable the ACPI space in the ACPI control
818 * register.
819 */
820 pci_read_config_byte(dev, priv->actrl_pbase, &reg_save);
821 pci_write_config_byte(dev, priv->actrl_pbase, reg_save | 0x80);
822 priv->actrl_pbase_save = reg_save;
823 break;
824 }
825 }
826
827 static void lpc_ich_enable_gpio_space(struct pci_dev *dev)
828 {
829 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
830 u8 reg_save;
831
832 pci_read_config_byte(dev, priv->gctrl, &reg_save);
833 pci_write_config_byte(dev, priv->gctrl, reg_save | 0x10);
834 priv->gctrl_save = reg_save;
835 }
836
837 static void lpc_ich_enable_pmc_space(struct pci_dev *dev)
838 {
839 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
840 u8 reg_save;
841
842 pci_read_config_byte(dev, priv->actrl_pbase, &reg_save);
843 pci_write_config_byte(dev, priv->actrl_pbase, reg_save | 0x2);
844
845 priv->actrl_pbase_save = reg_save;
846 }
847
848 static int lpc_ich_finalize_wdt_cell(struct pci_dev *dev)
849 {
850 struct itco_wdt_platform_data *pdata;
851 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
852 struct lpc_ich_info *info;
853 struct mfd_cell *cell = &lpc_ich_wdt_cell;
854
855 pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL);
856 if (!pdata)
857 return -ENOMEM;
858
859 info = &lpc_chipset_info[priv->chipset];
860
861 pdata->version = info->iTCO_version;
862 strlcpy(pdata->name, info->name, sizeof(pdata->name));
863
864 cell->platform_data = pdata;
865 cell->pdata_size = sizeof(*pdata);
866 return 0;
867 }
868
869 static void lpc_ich_finalize_gpio_cell(struct pci_dev *dev)
870 {
871 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
872 struct mfd_cell *cell = &lpc_ich_gpio_cell;
873
874 cell->platform_data = &lpc_chipset_info[priv->chipset];
875 cell->pdata_size = sizeof(struct lpc_ich_info);
876 }
877
878 /*
879 * We don't check for resource conflict globally. There are 2 or 3 independent
880 * GPIO groups and it's enough to have access to one of these to instantiate
881 * the device.
882 */
883 static int lpc_ich_check_conflict_gpio(struct resource *res)
884 {
885 int ret;
886 u8 use_gpio = 0;
887
888 if (resource_size(res) >= 0x50 &&
889 !acpi_check_region(res->start + 0x40, 0x10, "LPC ICH GPIO3"))
890 use_gpio |= 1 << 2;
891
892 if (!acpi_check_region(res->start + 0x30, 0x10, "LPC ICH GPIO2"))
893 use_gpio |= 1 << 1;
894
895 ret = acpi_check_region(res->start + 0x00, 0x30, "LPC ICH GPIO1");
896 if (!ret)
897 use_gpio |= 1 << 0;
898
899 return use_gpio ? use_gpio : ret;
900 }
901
902 static int lpc_ich_init_gpio(struct pci_dev *dev)
903 {
904 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
905 u32 base_addr_cfg;
906 u32 base_addr;
907 int ret;
908 bool acpi_conflict = false;
909 struct resource *res;
910
911 /* Setup power management base register */
912 pci_read_config_dword(dev, priv->abase, &base_addr_cfg);
913 base_addr = base_addr_cfg & 0x0000ff80;
914 if (!base_addr) {
915 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n");
916 lpc_ich_gpio_cell.num_resources--;
917 goto gpe0_done;
918 }
919
920 res = &gpio_ich_res[ICH_RES_GPE0];
921 res->start = base_addr + ACPIBASE_GPE_OFF;
922 res->end = base_addr + ACPIBASE_GPE_END;
923 ret = acpi_check_resource_conflict(res);
924 if (ret) {
925 /*
926 * This isn't fatal for the GPIO, but we have to make sure that
927 * the platform_device subsystem doesn't see this resource
928 * or it will register an invalid region.
929 */
930 lpc_ich_gpio_cell.num_resources--;
931 acpi_conflict = true;
932 } else {
933 lpc_ich_enable_acpi_space(dev);
934 }
935
936 gpe0_done:
937 /* Setup GPIO base register */
938 pci_read_config_dword(dev, priv->gbase, &base_addr_cfg);
939 base_addr = base_addr_cfg & 0x0000ff80;
940 if (!base_addr) {
941 dev_notice(&dev->dev, "I/O space for GPIO uninitialized\n");
942 ret = -ENODEV;
943 goto gpio_done;
944 }
945
946 /* Older devices provide fewer GPIO and have a smaller resource size. */
947 res = &gpio_ich_res[ICH_RES_GPIO];
948 res->start = base_addr;
949 switch (lpc_chipset_info[priv->chipset].gpio_version) {
950 case ICH_V5_GPIO:
951 case ICH_V10CORP_GPIO:
952 res->end = res->start + 128 - 1;
953 break;
954 default:
955 res->end = res->start + 64 - 1;
956 break;
957 }
958
959 ret = lpc_ich_check_conflict_gpio(res);
960 if (ret < 0) {
961 /* this isn't necessarily fatal for the GPIO */
962 acpi_conflict = true;
963 goto gpio_done;
964 }
965 lpc_chipset_info[priv->chipset].use_gpio = ret;
966 lpc_ich_enable_gpio_space(dev);
967
968 lpc_ich_finalize_gpio_cell(dev);
969 ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO,
970 &lpc_ich_gpio_cell, 1, NULL, 0, NULL);
971
972 gpio_done:
973 if (acpi_conflict)
974 pr_warn("Resource conflict(s) found affecting %s\n",
975 lpc_ich_gpio_cell.name);
976 return ret;
977 }
978
979 static int lpc_ich_init_wdt(struct pci_dev *dev)
980 {
981 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
982 u32 base_addr_cfg;
983 u32 base_addr;
984 int ret;
985 struct resource *res;
986
987 /* Setup power management base register */
988 pci_read_config_dword(dev, priv->abase, &base_addr_cfg);
989 base_addr = base_addr_cfg & 0x0000ff80;
990 if (!base_addr) {
991 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n");
992 ret = -ENODEV;
993 goto wdt_done;
994 }
995
996 res = wdt_io_res(ICH_RES_IO_TCO);
997 res->start = base_addr + ACPIBASE_TCO_OFF;
998 res->end = base_addr + ACPIBASE_TCO_END;
999
1000 res = wdt_io_res(ICH_RES_IO_SMI);
1001 res->start = base_addr + ACPIBASE_SMI_OFF;
1002 res->end = base_addr + ACPIBASE_SMI_END;
1003
1004 lpc_ich_enable_acpi_space(dev);
1005
1006 /*
1007 * iTCO v2:
1008 * Get the Memory-Mapped GCS register. To get access to it
1009 * we have to read RCBA from PCI Config space 0xf0 and use
1010 * it as base. GCS = RCBA + ICH6_GCS(0x3410).
1011 *
1012 * iTCO v3:
1013 * Get the Power Management Configuration register. To get access
1014 * to it we have to read the PMC BASE from config space and address
1015 * the register at offset 0x8.
1016 */
1017 if (lpc_chipset_info[priv->chipset].iTCO_version == 1) {
1018 /* Don't register iomem for TCO ver 1 */
1019 lpc_ich_wdt_cell.num_resources--;
1020 } else if (lpc_chipset_info[priv->chipset].iTCO_version == 2) {
1021 pci_read_config_dword(dev, RCBABASE, &base_addr_cfg);
1022 base_addr = base_addr_cfg & 0xffffc000;
1023 if (!(base_addr_cfg & 1)) {
1024 dev_notice(&dev->dev, "RCBA is disabled by "
1025 "hardware/BIOS, device disabled\n");
1026 ret = -ENODEV;
1027 goto wdt_done;
1028 }
1029 res = wdt_mem_res(ICH_RES_MEM_GCS_PMC);
1030 res->start = base_addr + ACPIBASE_GCS_OFF;
1031 res->end = base_addr + ACPIBASE_GCS_END;
1032 } else if (lpc_chipset_info[priv->chipset].iTCO_version == 3) {
1033 lpc_ich_enable_pmc_space(dev);
1034 pci_read_config_dword(dev, ACPICTRL_PMCBASE, &base_addr_cfg);
1035 base_addr = base_addr_cfg & 0xfffffe00;
1036
1037 res = wdt_mem_res(ICH_RES_MEM_GCS_PMC);
1038 res->start = base_addr + ACPIBASE_PMC_OFF;
1039 res->end = base_addr + ACPIBASE_PMC_END;
1040 }
1041
1042 ret = lpc_ich_finalize_wdt_cell(dev);
1043 if (ret)
1044 goto wdt_done;
1045
1046 ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO,
1047 &lpc_ich_wdt_cell, 1, NULL, 0, NULL);
1048
1049 wdt_done:
1050 return ret;
1051 }
1052
1053 static int lpc_ich_probe(struct pci_dev *dev,
1054 const struct pci_device_id *id)
1055 {
1056 struct lpc_ich_priv *priv;
1057 int ret;
1058 bool cell_added = false;
1059
1060 priv = devm_kzalloc(&dev->dev,
1061 sizeof(struct lpc_ich_priv), GFP_KERNEL);
1062 if (!priv)
1063 return -ENOMEM;
1064
1065 priv->chipset = id->driver_data;
1066
1067 priv->actrl_pbase_save = -1;
1068 priv->abase_save = -1;
1069
1070 priv->abase = ACPIBASE;
1071 priv->actrl_pbase = ACPICTRL_PMCBASE;
1072
1073 priv->gctrl_save = -1;
1074 if (priv->chipset <= LPC_ICH5) {
1075 priv->gbase = GPIOBASE_ICH0;
1076 priv->gctrl = GPIOCTRL_ICH0;
1077 } else {
1078 priv->gbase = GPIOBASE_ICH6;
1079 priv->gctrl = GPIOCTRL_ICH6;
1080 }
1081
1082 pci_set_drvdata(dev, priv);
1083
1084 if (lpc_chipset_info[priv->chipset].iTCO_version) {
1085 ret = lpc_ich_init_wdt(dev);
1086 if (!ret)
1087 cell_added = true;
1088 }
1089
1090 if (lpc_chipset_info[priv->chipset].gpio_version) {
1091 ret = lpc_ich_init_gpio(dev);
1092 if (!ret)
1093 cell_added = true;
1094 }
1095
1096 /*
1097 * We only care if at least one or none of the cells registered
1098 * successfully.
1099 */
1100 if (!cell_added) {
1101 dev_warn(&dev->dev, "No MFD cells added\n");
1102 lpc_ich_restore_config_space(dev);
1103 return -ENODEV;
1104 }
1105
1106 return 0;
1107 }
1108
1109 static void lpc_ich_remove(struct pci_dev *dev)
1110 {
1111 mfd_remove_devices(&dev->dev);
1112 lpc_ich_restore_config_space(dev);
1113 }
1114
1115 static struct pci_driver lpc_ich_driver = {
1116 .name = "lpc_ich",
1117 .id_table = lpc_ich_ids,
1118 .probe = lpc_ich_probe,
1119 .remove = lpc_ich_remove,
1120 };
1121
1122 module_pci_driver(lpc_ich_driver);
1123
1124 MODULE_AUTHOR("Aaron Sierra <asierra@xes-inc.com>");
1125 MODULE_DESCRIPTION("LPC interface for Intel ICH");
1126 MODULE_LICENSE("GPL");
Linux with added FPC-III support