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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * lpc_ich.c - LPC interface for Intel ICH
4 *
5 * LPC bridge function of the Intel ICH contains many other
6 * functional units, such as Interrupt controllers, Timers,
7 * Power Management, System Management, GPIO, RTC, and LPC
8 * Configuration Registers.
9 *
10 * This driver is derived from lpc_sch.
11
12 * Copyright (c) 2011 Extreme Engineering Solution, Inc.
13 * Author: Aaron Sierra <asierra@xes-inc.com>
14 *
15 * This driver supports the following I/O Controller hubs:
16 * (See the intel documentation on http://developer.intel.com.)
17 * document number 290655-003, 290677-014: 82801AA (ICH), 82801AB (ICHO)
18 * document number 290687-002, 298242-027: 82801BA (ICH2)
19 * document number 290733-003, 290739-013: 82801CA (ICH3-S)
20 * document number 290716-001, 290718-007: 82801CAM (ICH3-M)
21 * document number 290744-001, 290745-025: 82801DB (ICH4)
22 * document number 252337-001, 252663-008: 82801DBM (ICH4-M)
23 * document number 273599-001, 273645-002: 82801E (C-ICH)
24 * document number 252516-001, 252517-028: 82801EB (ICH5), 82801ER (ICH5R)
25 * document number 300641-004, 300884-013: 6300ESB
26 * document number 301473-002, 301474-026: 82801F (ICH6)
27 * document number 313082-001, 313075-006: 631xESB, 632xESB
28 * document number 307013-003, 307014-024: 82801G (ICH7)
29 * document number 322896-001, 322897-001: NM10
30 * document number 313056-003, 313057-017: 82801H (ICH8)
31 * document number 316972-004, 316973-012: 82801I (ICH9)
32 * document number 319973-002, 319974-002: 82801J (ICH10)
33 * document number 322169-001, 322170-003: 5 Series, 3400 Series (PCH)
34 * document number 320066-003, 320257-008: EP80597 (IICH)
35 * document number 324645-001, 324646-001: Cougar Point (CPT)
36 */
37
38#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
39
40#include <linux/kernel.h>
41#include <linux/module.h>
42#include <linux/errno.h>
43#include <linux/acpi.h>
44#include <linux/pci.h>
45#include <linux/mfd/core.h>
46#include <linux/mfd/lpc_ich.h>
47#include <linux/platform_data/itco_wdt.h>
48
49#define ACPIBASE 0x40
50#define ACPIBASE_GPE_OFF 0x28
51#define ACPIBASE_GPE_END 0x2f
52#define ACPIBASE_SMI_OFF 0x30
53#define ACPIBASE_SMI_END 0x33
54#define ACPIBASE_PMC_OFF 0x08
55#define ACPIBASE_PMC_END 0x0c
56#define ACPIBASE_TCO_OFF 0x60
57#define ACPIBASE_TCO_END 0x7f
58#define ACPICTRL_PMCBASE 0x44
59
60#define ACPIBASE_GCS_OFF 0x3410
61#define ACPIBASE_GCS_END 0x3414
62
63#define SPIBASE_BYT 0x54
64#define SPIBASE_BYT_SZ 512
65#define SPIBASE_BYT_EN BIT(1)
66
67#define SPIBASE_LPT 0x3800
68#define SPIBASE_LPT_SZ 512
69#define BCR 0xdc
70#define BCR_WPD BIT(0)
71
72#define SPIBASE_APL_SZ 4096
73
74#define GPIOBASE_ICH0 0x58
75#define GPIOCTRL_ICH0 0x5C
76#define GPIOBASE_ICH6 0x48
77#define GPIOCTRL_ICH6 0x4C
78
79#define RCBABASE 0xf0
80
81#define wdt_io_res(i) wdt_res(0, i)
82#define wdt_mem_res(i) wdt_res(ICH_RES_MEM_OFF, i)
83#define wdt_res(b, i) (&wdt_ich_res[(b) + (i)])
84
85struct lpc_ich_priv {
86 int chipset;
87
88 int abase; /* ACPI base */
89 int actrl_pbase; /* ACPI control or PMC base */
90 int gbase; /* GPIO base */
91 int gctrl; /* GPIO control */
92
93 int abase_save; /* Cached ACPI base value */
94 int actrl_pbase_save; /* Cached ACPI control or PMC base value */
95 int gctrl_save; /* Cached GPIO control value */
96};
97
98static struct resource wdt_ich_res[] = {
99 /* ACPI - TCO */
100 {
101 .flags = IORESOURCE_IO,
102 },
103 /* ACPI - SMI */
104 {
105 .flags = IORESOURCE_IO,
106 },
107 /* GCS or PMC */
108 {
109 .flags = IORESOURCE_MEM,
110 },
111};
112
113static struct resource gpio_ich_res[] = {
114 /* GPIO */
115 {
116 .flags = IORESOURCE_IO,
117 },
118 /* ACPI - GPE0 */
119 {
120 .flags = IORESOURCE_IO,
121 },
122};
123
124static struct resource intel_spi_res[] = {
125 {
126 .flags = IORESOURCE_MEM,
127 }
128};
129
130static struct mfd_cell lpc_ich_wdt_cell = {
131 .name = "iTCO_wdt",
132 .num_resources = ARRAY_SIZE(wdt_ich_res),
133 .resources = wdt_ich_res,
134 .ignore_resource_conflicts = true,
135};
136
137static struct mfd_cell lpc_ich_gpio_cell = {
138 .name = "gpio_ich",
139 .num_resources = ARRAY_SIZE(gpio_ich_res),
140 .resources = gpio_ich_res,
141 .ignore_resource_conflicts = true,
142};
143
144
145static struct mfd_cell lpc_ich_spi_cell = {
146 .name = "intel-spi",
147 .num_resources = ARRAY_SIZE(intel_spi_res),
148 .resources = intel_spi_res,
149 .ignore_resource_conflicts = true,
150};
151
152/* chipset related info */
153enum lpc_chipsets {
154 LPC_ICH = 0, /* ICH */
155 LPC_ICH0, /* ICH0 */
156 LPC_ICH2, /* ICH2 */
157 LPC_ICH2M, /* ICH2-M */
158 LPC_ICH3, /* ICH3-S */
159 LPC_ICH3M, /* ICH3-M */
160 LPC_ICH4, /* ICH4 */
161 LPC_ICH4M, /* ICH4-M */
162 LPC_CICH, /* C-ICH */
163 LPC_ICH5, /* ICH5 & ICH5R */
164 LPC_6300ESB, /* 6300ESB */
165 LPC_ICH6, /* ICH6 & ICH6R */
166 LPC_ICH6M, /* ICH6-M */
167 LPC_ICH6W, /* ICH6W & ICH6RW */
168 LPC_631XESB, /* 631xESB/632xESB */
169 LPC_ICH7, /* ICH7 & ICH7R */
170 LPC_ICH7DH, /* ICH7DH */
171 LPC_ICH7M, /* ICH7-M & ICH7-U */
172 LPC_ICH7MDH, /* ICH7-M DH */
173 LPC_NM10, /* NM10 */
174 LPC_ICH8, /* ICH8 & ICH8R */
175 LPC_ICH8DH, /* ICH8DH */
176 LPC_ICH8DO, /* ICH8DO */
177 LPC_ICH8M, /* ICH8M */
178 LPC_ICH8ME, /* ICH8M-E */
179 LPC_ICH9, /* ICH9 */
180 LPC_ICH9R, /* ICH9R */
181 LPC_ICH9DH, /* ICH9DH */
182 LPC_ICH9DO, /* ICH9DO */
183 LPC_ICH9M, /* ICH9M */
184 LPC_ICH9ME, /* ICH9M-E */
185 LPC_ICH10, /* ICH10 */
186 LPC_ICH10R, /* ICH10R */
187 LPC_ICH10D, /* ICH10D */
188 LPC_ICH10DO, /* ICH10DO */
189 LPC_PCH, /* PCH Desktop Full Featured */
190 LPC_PCHM, /* PCH Mobile Full Featured */
191 LPC_P55, /* P55 */
192 LPC_PM55, /* PM55 */
193 LPC_H55, /* H55 */
194 LPC_QM57, /* QM57 */
195 LPC_H57, /* H57 */
196 LPC_HM55, /* HM55 */
197 LPC_Q57, /* Q57 */
198 LPC_HM57, /* HM57 */
199 LPC_PCHMSFF, /* PCH Mobile SFF Full Featured */
200 LPC_QS57, /* QS57 */
201 LPC_3400, /* 3400 */
202 LPC_3420, /* 3420 */
203 LPC_3450, /* 3450 */
204 LPC_EP80579, /* EP80579 */
205 LPC_CPT, /* Cougar Point */
206 LPC_CPTD, /* Cougar Point Desktop */
207 LPC_CPTM, /* Cougar Point Mobile */
208 LPC_PBG, /* Patsburg */
209 LPC_DH89XXCC, /* DH89xxCC */
210 LPC_PPT, /* Panther Point */
211 LPC_LPT, /* Lynx Point */
212 LPC_LPT_LP, /* Lynx Point-LP */
213 LPC_WBG, /* Wellsburg */
214 LPC_AVN, /* Avoton SoC */
215 LPC_BAYTRAIL, /* Bay Trail SoC */
216 LPC_COLETO, /* Coleto Creek */
217 LPC_WPT_LP, /* Wildcat Point-LP */
218 LPC_BRASWELL, /* Braswell SoC */
219 LPC_LEWISBURG, /* Lewisburg */
220 LPC_9S, /* 9 Series */
221 LPC_APL, /* Apollo Lake SoC */
222 LPC_GLK, /* Gemini Lake SoC */
223 LPC_COUGARMOUNTAIN,/* Cougar Mountain SoC*/
224};
225
226static struct lpc_ich_info lpc_chipset_info[] = {
227 [LPC_ICH] = {
228 .name = "ICH",
229 .iTCO_version = 1,
230 },
231 [LPC_ICH0] = {
232 .name = "ICH0",
233 .iTCO_version = 1,
234 },
235 [LPC_ICH2] = {
236 .name = "ICH2",
237 .iTCO_version = 1,
238 },
239 [LPC_ICH2M] = {
240 .name = "ICH2-M",
241 .iTCO_version = 1,
242 },
243 [LPC_ICH3] = {
244 .name = "ICH3-S",
245 .iTCO_version = 1,
246 },
247 [LPC_ICH3M] = {
248 .name = "ICH3-M",
249 .iTCO_version = 1,
250 },
251 [LPC_ICH4] = {
252 .name = "ICH4",
253 .iTCO_version = 1,
254 },
255 [LPC_ICH4M] = {
256 .name = "ICH4-M",
257 .iTCO_version = 1,
258 },
259 [LPC_CICH] = {
260 .name = "C-ICH",
261 .iTCO_version = 1,
262 },
263 [LPC_ICH5] = {
264 .name = "ICH5 or ICH5R",
265 .iTCO_version = 1,
266 },
267 [LPC_6300ESB] = {
268 .name = "6300ESB",
269 .iTCO_version = 1,
270 },
271 [LPC_ICH6] = {
272 .name = "ICH6 or ICH6R",
273 .iTCO_version = 2,
274 .gpio_version = ICH_V6_GPIO,
275 },
276 [LPC_ICH6M] = {
277 .name = "ICH6-M",
278 .iTCO_version = 2,
279 .gpio_version = ICH_V6_GPIO,
280 },
281 [LPC_ICH6W] = {
282 .name = "ICH6W or ICH6RW",
283 .iTCO_version = 2,
284 .gpio_version = ICH_V6_GPIO,
285 },
286 [LPC_631XESB] = {
287 .name = "631xESB/632xESB",
288 .iTCO_version = 2,
289 .gpio_version = ICH_V6_GPIO,
290 },
291 [LPC_ICH7] = {
292 .name = "ICH7 or ICH7R",
293 .iTCO_version = 2,
294 .gpio_version = ICH_V7_GPIO,
295 },
296 [LPC_ICH7DH] = {
297 .name = "ICH7DH",
298 .iTCO_version = 2,
299 .gpio_version = ICH_V7_GPIO,
300 },
301 [LPC_ICH7M] = {
302 .name = "ICH7-M or ICH7-U",
303 .iTCO_version = 2,
304 .gpio_version = ICH_V7_GPIO,
305 },
306 [LPC_ICH7MDH] = {
307 .name = "ICH7-M DH",
308 .iTCO_version = 2,
309 .gpio_version = ICH_V7_GPIO,
310 },
311 [LPC_NM10] = {
312 .name = "NM10",
313 .iTCO_version = 2,
314 .gpio_version = ICH_V7_GPIO,
315 },
316 [LPC_ICH8] = {
317 .name = "ICH8 or ICH8R",
318 .iTCO_version = 2,
319 .gpio_version = ICH_V7_GPIO,
320 },
321 [LPC_ICH8DH] = {
322 .name = "ICH8DH",
323 .iTCO_version = 2,
324 .gpio_version = ICH_V7_GPIO,
325 },
326 [LPC_ICH8DO] = {
327 .name = "ICH8DO",
328 .iTCO_version = 2,
329 .gpio_version = ICH_V7_GPIO,
330 },
331 [LPC_ICH8M] = {
332 .name = "ICH8M",
333 .iTCO_version = 2,
334 .gpio_version = ICH_V7_GPIO,
335 },
336 [LPC_ICH8ME] = {
337 .name = "ICH8M-E",
338 .iTCO_version = 2,
339 .gpio_version = ICH_V7_GPIO,
340 },
341 [LPC_ICH9] = {
342 .name = "ICH9",
343 .iTCO_version = 2,
344 .gpio_version = ICH_V9_GPIO,
345 },
346 [LPC_ICH9R] = {
347 .name = "ICH9R",
348 .iTCO_version = 2,
349 .gpio_version = ICH_V9_GPIO,
350 },
351 [LPC_ICH9DH] = {
352 .name = "ICH9DH",
353 .iTCO_version = 2,
354 .gpio_version = ICH_V9_GPIO,
355 },
356 [LPC_ICH9DO] = {
357 .name = "ICH9DO",
358 .iTCO_version = 2,
359 .gpio_version = ICH_V9_GPIO,
360 },
361 [LPC_ICH9M] = {
362 .name = "ICH9M",
363 .iTCO_version = 2,
364 .gpio_version = ICH_V9_GPIO,
365 },
366 [LPC_ICH9ME] = {
367 .name = "ICH9M-E",
368 .iTCO_version = 2,
369 .gpio_version = ICH_V9_GPIO,
370 },
371 [LPC_ICH10] = {
372 .name = "ICH10",
373 .iTCO_version = 2,
374 .gpio_version = ICH_V10CONS_GPIO,
375 },
376 [LPC_ICH10R] = {
377 .name = "ICH10R",
378 .iTCO_version = 2,
379 .gpio_version = ICH_V10CONS_GPIO,
380 },
381 [LPC_ICH10D] = {
382 .name = "ICH10D",
383 .iTCO_version = 2,
384 .gpio_version = ICH_V10CORP_GPIO,
385 },
386 [LPC_ICH10DO] = {
387 .name = "ICH10DO",
388 .iTCO_version = 2,
389 .gpio_version = ICH_V10CORP_GPIO,
390 },
391 [LPC_PCH] = {
392 .name = "PCH Desktop Full Featured",
393 .iTCO_version = 2,
394 .gpio_version = ICH_V5_GPIO,
395 },
396 [LPC_PCHM] = {
397 .name = "PCH Mobile Full Featured",
398 .iTCO_version = 2,
399 .gpio_version = ICH_V5_GPIO,
400 },
401 [LPC_P55] = {
402 .name = "P55",
403 .iTCO_version = 2,
404 .gpio_version = ICH_V5_GPIO,
405 },
406 [LPC_PM55] = {
407 .name = "PM55",
408 .iTCO_version = 2,
409 .gpio_version = ICH_V5_GPIO,
410 },
411 [LPC_H55] = {
412 .name = "H55",
413 .iTCO_version = 2,
414 .gpio_version = ICH_V5_GPIO,
415 },
416 [LPC_QM57] = {
417 .name = "QM57",
418 .iTCO_version = 2,
419 .gpio_version = ICH_V5_GPIO,
420 },
421 [LPC_H57] = {
422 .name = "H57",
423 .iTCO_version = 2,
424 .gpio_version = ICH_V5_GPIO,
425 },
426 [LPC_HM55] = {
427 .name = "HM55",
428 .iTCO_version = 2,
429 .gpio_version = ICH_V5_GPIO,
430 },
431 [LPC_Q57] = {
432 .name = "Q57",
433 .iTCO_version = 2,
434 .gpio_version = ICH_V5_GPIO,
435 },
436 [LPC_HM57] = {
437 .name = "HM57",
438 .iTCO_version = 2,
439 .gpio_version = ICH_V5_GPIO,
440 },
441 [LPC_PCHMSFF] = {
442 .name = "PCH Mobile SFF Full Featured",
443 .iTCO_version = 2,
444 .gpio_version = ICH_V5_GPIO,
445 },
446 [LPC_QS57] = {
447 .name = "QS57",
448 .iTCO_version = 2,
449 .gpio_version = ICH_V5_GPIO,
450 },
451 [LPC_3400] = {
452 .name = "3400",
453 .iTCO_version = 2,
454 .gpio_version = ICH_V5_GPIO,
455 },
456 [LPC_3420] = {
457 .name = "3420",
458 .iTCO_version = 2,
459 .gpio_version = ICH_V5_GPIO,
460 },
461 [LPC_3450] = {
462 .name = "3450",
463 .iTCO_version = 2,
464 .gpio_version = ICH_V5_GPIO,
465 },
466 [LPC_EP80579] = {
467 .name = "EP80579",
468 .iTCO_version = 2,
469 },
470 [LPC_CPT] = {
471 .name = "Cougar Point",
472 .iTCO_version = 2,
473 .gpio_version = ICH_V5_GPIO,
474 },
475 [LPC_CPTD] = {
476 .name = "Cougar Point Desktop",
477 .iTCO_version = 2,
478 .gpio_version = ICH_V5_GPIO,
479 },
480 [LPC_CPTM] = {
481 .name = "Cougar Point Mobile",
482 .iTCO_version = 2,
483 .gpio_version = ICH_V5_GPIO,
484 },
485 [LPC_PBG] = {
486 .name = "Patsburg",
487 .iTCO_version = 2,
488 },
489 [LPC_DH89XXCC] = {
490 .name = "DH89xxCC",
491 .iTCO_version = 2,
492 },
493 [LPC_PPT] = {
494 .name = "Panther Point",
495 .iTCO_version = 2,
496 .gpio_version = ICH_V5_GPIO,
497 },
498 [LPC_LPT] = {
499 .name = "Lynx Point",
500 .iTCO_version = 2,
501 .gpio_version = ICH_V5_GPIO,
502 .spi_type = INTEL_SPI_LPT,
503 },
504 [LPC_LPT_LP] = {
505 .name = "Lynx Point_LP",
506 .iTCO_version = 2,
507 .spi_type = INTEL_SPI_LPT,
508 },
509 [LPC_WBG] = {
510 .name = "Wellsburg",
511 .iTCO_version = 2,
512 },
513 [LPC_AVN] = {
514 .name = "Avoton SoC",
515 .iTCO_version = 3,
516 .gpio_version = AVOTON_GPIO,
517 .spi_type = INTEL_SPI_BYT,
518 },
519 [LPC_BAYTRAIL] = {
520 .name = "Bay Trail SoC",
521 .iTCO_version = 3,
522 .spi_type = INTEL_SPI_BYT,
523 },
524 [LPC_COLETO] = {
525 .name = "Coleto Creek",
526 .iTCO_version = 2,
527 },
528 [LPC_WPT_LP] = {
529 .name = "Wildcat Point_LP",
530 .iTCO_version = 2,
531 .spi_type = INTEL_SPI_LPT,
532 },
533 [LPC_BRASWELL] = {
534 .name = "Braswell SoC",
535 .iTCO_version = 3,
536 .spi_type = INTEL_SPI_BYT,
537 },
538 [LPC_LEWISBURG] = {
539 .name = "Lewisburg",
540 .iTCO_version = 2,
541 },
542 [LPC_9S] = {
543 .name = "9 Series",
544 .iTCO_version = 2,
545 .gpio_version = ICH_V5_GPIO,
546 },
547 [LPC_APL] = {
548 .name = "Apollo Lake SoC",
549 .iTCO_version = 5,
550 .spi_type = INTEL_SPI_BXT,
551 },
552 [LPC_GLK] = {
553 .name = "Gemini Lake SoC",
554 .spi_type = INTEL_SPI_BXT,
555 },
556 [LPC_COUGARMOUNTAIN] = {
557 .name = "Cougar Mountain SoC",
558 .iTCO_version = 3,
559 },
560};
561
562/*
563 * This data only exists for exporting the supported PCI ids
564 * via MODULE_DEVICE_TABLE. We do not actually register a
565 * pci_driver, because the I/O Controller Hub has also other
566 * functions that probably will be registered by other drivers.
567 */
568static const struct pci_device_id lpc_ich_ids[] = {
569 { PCI_VDEVICE(INTEL, 0x0f1c), LPC_BAYTRAIL},
570 { PCI_VDEVICE(INTEL, 0x1c41), LPC_CPT},
571 { PCI_VDEVICE(INTEL, 0x1c42), LPC_CPTD},
572 { PCI_VDEVICE(INTEL, 0x1c43), LPC_CPTM},
573 { PCI_VDEVICE(INTEL, 0x1c44), LPC_CPT},
574 { PCI_VDEVICE(INTEL, 0x1c45), LPC_CPT},
575 { PCI_VDEVICE(INTEL, 0x1c46), LPC_CPT},
576 { PCI_VDEVICE(INTEL, 0x1c47), LPC_CPT},
577 { PCI_VDEVICE(INTEL, 0x1c48), LPC_CPT},
578 { PCI_VDEVICE(INTEL, 0x1c49), LPC_CPT},
579 { PCI_VDEVICE(INTEL, 0x1c4a), LPC_CPT},
580 { PCI_VDEVICE(INTEL, 0x1c4b), LPC_CPT},
581 { PCI_VDEVICE(INTEL, 0x1c4c), LPC_CPT},
582 { PCI_VDEVICE(INTEL, 0x1c4d), LPC_CPT},
583 { PCI_VDEVICE(INTEL, 0x1c4e), LPC_CPT},
584 { PCI_VDEVICE(INTEL, 0x1c4f), LPC_CPT},
585 { PCI_VDEVICE(INTEL, 0x1c50), LPC_CPT},
586 { PCI_VDEVICE(INTEL, 0x1c51), LPC_CPT},
587 { PCI_VDEVICE(INTEL, 0x1c52), LPC_CPT},
588 { PCI_VDEVICE(INTEL, 0x1c53), LPC_CPT},
589 { PCI_VDEVICE(INTEL, 0x1c54), LPC_CPT},
590 { PCI_VDEVICE(INTEL, 0x1c55), LPC_CPT},
591 { PCI_VDEVICE(INTEL, 0x1c56), LPC_CPT},
592 { PCI_VDEVICE(INTEL, 0x1c57), LPC_CPT},
593 { PCI_VDEVICE(INTEL, 0x1c58), LPC_CPT},
594 { PCI_VDEVICE(INTEL, 0x1c59), LPC_CPT},
595 { PCI_VDEVICE(INTEL, 0x1c5a), LPC_CPT},
596 { PCI_VDEVICE(INTEL, 0x1c5b), LPC_CPT},
597 { PCI_VDEVICE(INTEL, 0x1c5c), LPC_CPT},
598 { PCI_VDEVICE(INTEL, 0x1c5d), LPC_CPT},
599 { PCI_VDEVICE(INTEL, 0x1c5e), LPC_CPT},
600 { PCI_VDEVICE(INTEL, 0x1c5f), LPC_CPT},
601 { PCI_VDEVICE(INTEL, 0x1d40), LPC_PBG},
602 { PCI_VDEVICE(INTEL, 0x1d41), LPC_PBG},
603 { PCI_VDEVICE(INTEL, 0x1e40), LPC_PPT},
604 { PCI_VDEVICE(INTEL, 0x1e41), LPC_PPT},
605 { PCI_VDEVICE(INTEL, 0x1e42), LPC_PPT},
606 { PCI_VDEVICE(INTEL, 0x1e43), LPC_PPT},
607 { PCI_VDEVICE(INTEL, 0x1e44), LPC_PPT},
608 { PCI_VDEVICE(INTEL, 0x1e45), LPC_PPT},
609 { PCI_VDEVICE(INTEL, 0x1e46), LPC_PPT},
610 { PCI_VDEVICE(INTEL, 0x1e47), LPC_PPT},
611 { PCI_VDEVICE(INTEL, 0x1e48), LPC_PPT},
612 { PCI_VDEVICE(INTEL, 0x1e49), LPC_PPT},
613 { PCI_VDEVICE(INTEL, 0x1e4a), LPC_PPT},
614 { PCI_VDEVICE(INTEL, 0x1e4b), LPC_PPT},
615 { PCI_VDEVICE(INTEL, 0x1e4c), LPC_PPT},
616 { PCI_VDEVICE(INTEL, 0x1e4d), LPC_PPT},
617 { PCI_VDEVICE(INTEL, 0x1e4e), LPC_PPT},
618 { PCI_VDEVICE(INTEL, 0x1e4f), LPC_PPT},
619 { PCI_VDEVICE(INTEL, 0x1e50), LPC_PPT},
620 { PCI_VDEVICE(INTEL, 0x1e51), LPC_PPT},
621 { PCI_VDEVICE(INTEL, 0x1e52), LPC_PPT},
622 { PCI_VDEVICE(INTEL, 0x1e53), LPC_PPT},
623 { PCI_VDEVICE(INTEL, 0x1e54), LPC_PPT},
624 { PCI_VDEVICE(INTEL, 0x1e55), LPC_PPT},
625 { PCI_VDEVICE(INTEL, 0x1e56), LPC_PPT},
626 { PCI_VDEVICE(INTEL, 0x1e57), LPC_PPT},
627 { PCI_VDEVICE(INTEL, 0x1e58), LPC_PPT},
628 { PCI_VDEVICE(INTEL, 0x1e59), LPC_PPT},
629 { PCI_VDEVICE(INTEL, 0x1e5a), LPC_PPT},
630 { PCI_VDEVICE(INTEL, 0x1e5b), LPC_PPT},
631 { PCI_VDEVICE(INTEL, 0x1e5c), LPC_PPT},
632 { PCI_VDEVICE(INTEL, 0x1e5d), LPC_PPT},
633 { PCI_VDEVICE(INTEL, 0x1e5e), LPC_PPT},
634 { PCI_VDEVICE(INTEL, 0x1e5f), LPC_PPT},
635 { PCI_VDEVICE(INTEL, 0x1f38), LPC_AVN},
636 { PCI_VDEVICE(INTEL, 0x1f39), LPC_AVN},
637 { PCI_VDEVICE(INTEL, 0x1f3a), LPC_AVN},
638 { PCI_VDEVICE(INTEL, 0x1f3b), LPC_AVN},
639 { PCI_VDEVICE(INTEL, 0x229c), LPC_BRASWELL},
640 { PCI_VDEVICE(INTEL, 0x2310), LPC_DH89XXCC},
641 { PCI_VDEVICE(INTEL, 0x2390), LPC_COLETO},
642 { PCI_VDEVICE(INTEL, 0x2410), LPC_ICH},
643 { PCI_VDEVICE(INTEL, 0x2420), LPC_ICH0},
644 { PCI_VDEVICE(INTEL, 0x2440), LPC_ICH2},
645 { PCI_VDEVICE(INTEL, 0x244c), LPC_ICH2M},
646 { PCI_VDEVICE(INTEL, 0x2450), LPC_CICH},
647 { PCI_VDEVICE(INTEL, 0x2480), LPC_ICH3},
648 { PCI_VDEVICE(INTEL, 0x248c), LPC_ICH3M},
649 { PCI_VDEVICE(INTEL, 0x24c0), LPC_ICH4},
650 { PCI_VDEVICE(INTEL, 0x24cc), LPC_ICH4M},
651 { PCI_VDEVICE(INTEL, 0x24d0), LPC_ICH5},
652 { PCI_VDEVICE(INTEL, 0x25a1), LPC_6300ESB},
653 { PCI_VDEVICE(INTEL, 0x2640), LPC_ICH6},
654 { PCI_VDEVICE(INTEL, 0x2641), LPC_ICH6M},
655 { PCI_VDEVICE(INTEL, 0x2642), LPC_ICH6W},
656 { PCI_VDEVICE(INTEL, 0x2670), LPC_631XESB},
657 { PCI_VDEVICE(INTEL, 0x2671), LPC_631XESB},
658 { PCI_VDEVICE(INTEL, 0x2672), LPC_631XESB},
659 { PCI_VDEVICE(INTEL, 0x2673), LPC_631XESB},
660 { PCI_VDEVICE(INTEL, 0x2674), LPC_631XESB},
661 { PCI_VDEVICE(INTEL, 0x2675), LPC_631XESB},
662 { PCI_VDEVICE(INTEL, 0x2676), LPC_631XESB},
663 { PCI_VDEVICE(INTEL, 0x2677), LPC_631XESB},
664 { PCI_VDEVICE(INTEL, 0x2678), LPC_631XESB},
665 { PCI_VDEVICE(INTEL, 0x2679), LPC_631XESB},
666 { PCI_VDEVICE(INTEL, 0x267a), LPC_631XESB},
667 { PCI_VDEVICE(INTEL, 0x267b), LPC_631XESB},
668 { PCI_VDEVICE(INTEL, 0x267c), LPC_631XESB},
669 { PCI_VDEVICE(INTEL, 0x267d), LPC_631XESB},
670 { PCI_VDEVICE(INTEL, 0x267e), LPC_631XESB},
671 { PCI_VDEVICE(INTEL, 0x267f), LPC_631XESB},
672 { PCI_VDEVICE(INTEL, 0x27b0), LPC_ICH7DH},
673 { PCI_VDEVICE(INTEL, 0x27b8), LPC_ICH7},
674 { PCI_VDEVICE(INTEL, 0x27b9), LPC_ICH7M},
675 { PCI_VDEVICE(INTEL, 0x27bc), LPC_NM10},
676 { PCI_VDEVICE(INTEL, 0x27bd), LPC_ICH7MDH},
677 { PCI_VDEVICE(INTEL, 0x2810), LPC_ICH8},
678 { PCI_VDEVICE(INTEL, 0x2811), LPC_ICH8ME},
679 { PCI_VDEVICE(INTEL, 0x2812), LPC_ICH8DH},
680 { PCI_VDEVICE(INTEL, 0x2814), LPC_ICH8DO},
681 { PCI_VDEVICE(INTEL, 0x2815), LPC_ICH8M},
682 { PCI_VDEVICE(INTEL, 0x2912), LPC_ICH9DH},
683 { PCI_VDEVICE(INTEL, 0x2914), LPC_ICH9DO},
684 { PCI_VDEVICE(INTEL, 0x2916), LPC_ICH9R},
685 { PCI_VDEVICE(INTEL, 0x2917), LPC_ICH9ME},
686 { PCI_VDEVICE(INTEL, 0x2918), LPC_ICH9},
687 { PCI_VDEVICE(INTEL, 0x2919), LPC_ICH9M},
688 { PCI_VDEVICE(INTEL, 0x3197), LPC_GLK},
689 { PCI_VDEVICE(INTEL, 0x2b9c), LPC_COUGARMOUNTAIN},
690 { PCI_VDEVICE(INTEL, 0x3a14), LPC_ICH10DO},
691 { PCI_VDEVICE(INTEL, 0x3a16), LPC_ICH10R},
692 { PCI_VDEVICE(INTEL, 0x3a18), LPC_ICH10},
693 { PCI_VDEVICE(INTEL, 0x3a1a), LPC_ICH10D},
694 { PCI_VDEVICE(INTEL, 0x3b00), LPC_PCH},
695 { PCI_VDEVICE(INTEL, 0x3b01), LPC_PCHM},
696 { PCI_VDEVICE(INTEL, 0x3b02), LPC_P55},
697 { PCI_VDEVICE(INTEL, 0x3b03), LPC_PM55},
698 { PCI_VDEVICE(INTEL, 0x3b06), LPC_H55},
699 { PCI_VDEVICE(INTEL, 0x3b07), LPC_QM57},
700 { PCI_VDEVICE(INTEL, 0x3b08), LPC_H57},
701 { PCI_VDEVICE(INTEL, 0x3b09), LPC_HM55},
702 { PCI_VDEVICE(INTEL, 0x3b0a), LPC_Q57},
703 { PCI_VDEVICE(INTEL, 0x3b0b), LPC_HM57},
704 { PCI_VDEVICE(INTEL, 0x3b0d), LPC_PCHMSFF},
705 { PCI_VDEVICE(INTEL, 0x3b0f), LPC_QS57},
706 { PCI_VDEVICE(INTEL, 0x3b12), LPC_3400},
707 { PCI_VDEVICE(INTEL, 0x3b14), LPC_3420},
708 { PCI_VDEVICE(INTEL, 0x3b16), LPC_3450},
709 { PCI_VDEVICE(INTEL, 0x5031), LPC_EP80579},
710 { PCI_VDEVICE(INTEL, 0x5ae8), LPC_APL},
711 { PCI_VDEVICE(INTEL, 0x8c40), LPC_LPT},
712 { PCI_VDEVICE(INTEL, 0x8c41), LPC_LPT},
713 { PCI_VDEVICE(INTEL, 0x8c42), LPC_LPT},
714 { PCI_VDEVICE(INTEL, 0x8c43), LPC_LPT},
715 { PCI_VDEVICE(INTEL, 0x8c44), LPC_LPT},
716 { PCI_VDEVICE(INTEL, 0x8c45), LPC_LPT},
717 { PCI_VDEVICE(INTEL, 0x8c46), LPC_LPT},
718 { PCI_VDEVICE(INTEL, 0x8c47), LPC_LPT},
719 { PCI_VDEVICE(INTEL, 0x8c48), LPC_LPT},
720 { PCI_VDEVICE(INTEL, 0x8c49), LPC_LPT},
721 { PCI_VDEVICE(INTEL, 0x8c4a), LPC_LPT},
722 { PCI_VDEVICE(INTEL, 0x8c4b), LPC_LPT},
723 { PCI_VDEVICE(INTEL, 0x8c4c), LPC_LPT},
724 { PCI_VDEVICE(INTEL, 0x8c4d), LPC_LPT},
725 { PCI_VDEVICE(INTEL, 0x8c4e), LPC_LPT},
726 { PCI_VDEVICE(INTEL, 0x8c4f), LPC_LPT},
727 { PCI_VDEVICE(INTEL, 0x8c50), LPC_LPT},
728 { PCI_VDEVICE(INTEL, 0x8c51), LPC_LPT},
729 { PCI_VDEVICE(INTEL, 0x8c52), LPC_LPT},
730 { PCI_VDEVICE(INTEL, 0x8c53), LPC_LPT},
731 { PCI_VDEVICE(INTEL, 0x8c54), LPC_LPT},
732 { PCI_VDEVICE(INTEL, 0x8c55), LPC_LPT},
733 { PCI_VDEVICE(INTEL, 0x8c56), LPC_LPT},
734 { PCI_VDEVICE(INTEL, 0x8c57), LPC_LPT},
735 { PCI_VDEVICE(INTEL, 0x8c58), LPC_LPT},
736 { PCI_VDEVICE(INTEL, 0x8c59), LPC_LPT},
737 { PCI_VDEVICE(INTEL, 0x8c5a), LPC_LPT},
738 { PCI_VDEVICE(INTEL, 0x8c5b), LPC_LPT},
739 { PCI_VDEVICE(INTEL, 0x8c5c), LPC_LPT},
740 { PCI_VDEVICE(INTEL, 0x8c5d), LPC_LPT},
741 { PCI_VDEVICE(INTEL, 0x8c5e), LPC_LPT},
742 { PCI_VDEVICE(INTEL, 0x8c5f), LPC_LPT},
743 { PCI_VDEVICE(INTEL, 0x8cc1), LPC_9S},
744 { PCI_VDEVICE(INTEL, 0x8cc2), LPC_9S},
745 { PCI_VDEVICE(INTEL, 0x8cc3), LPC_9S},
746 { PCI_VDEVICE(INTEL, 0x8cc4), LPC_9S},
747 { PCI_VDEVICE(INTEL, 0x8cc6), LPC_9S},
748 { PCI_VDEVICE(INTEL, 0x8d40), LPC_WBG},
749 { PCI_VDEVICE(INTEL, 0x8d41), LPC_WBG},
750 { PCI_VDEVICE(INTEL, 0x8d42), LPC_WBG},
751 { PCI_VDEVICE(INTEL, 0x8d43), LPC_WBG},
752 { PCI_VDEVICE(INTEL, 0x8d44), LPC_WBG},
753 { PCI_VDEVICE(INTEL, 0x8d45), LPC_WBG},
754 { PCI_VDEVICE(INTEL, 0x8d46), LPC_WBG},
755 { PCI_VDEVICE(INTEL, 0x8d47), LPC_WBG},
756 { PCI_VDEVICE(INTEL, 0x8d48), LPC_WBG},
757 { PCI_VDEVICE(INTEL, 0x8d49), LPC_WBG},
758 { PCI_VDEVICE(INTEL, 0x8d4a), LPC_WBG},
759 { PCI_VDEVICE(INTEL, 0x8d4b), LPC_WBG},
760 { PCI_VDEVICE(INTEL, 0x8d4c), LPC_WBG},
761 { PCI_VDEVICE(INTEL, 0x8d4d), LPC_WBG},
762 { PCI_VDEVICE(INTEL, 0x8d4e), LPC_WBG},
763 { PCI_VDEVICE(INTEL, 0x8d4f), LPC_WBG},
764 { PCI_VDEVICE(INTEL, 0x8d50), LPC_WBG},
765 { PCI_VDEVICE(INTEL, 0x8d51), LPC_WBG},
766 { PCI_VDEVICE(INTEL, 0x8d52), LPC_WBG},
767 { PCI_VDEVICE(INTEL, 0x8d53), LPC_WBG},
768 { PCI_VDEVICE(INTEL, 0x8d54), LPC_WBG},
769 { PCI_VDEVICE(INTEL, 0x8d55), LPC_WBG},
770 { PCI_VDEVICE(INTEL, 0x8d56), LPC_WBG},
771 { PCI_VDEVICE(INTEL, 0x8d57), LPC_WBG},
772 { PCI_VDEVICE(INTEL, 0x8d58), LPC_WBG},
773 { PCI_VDEVICE(INTEL, 0x8d59), LPC_WBG},
774 { PCI_VDEVICE(INTEL, 0x8d5a), LPC_WBG},
775 { PCI_VDEVICE(INTEL, 0x8d5b), LPC_WBG},
776 { PCI_VDEVICE(INTEL, 0x8d5c), LPC_WBG},
777 { PCI_VDEVICE(INTEL, 0x8d5d), LPC_WBG},
778 { PCI_VDEVICE(INTEL, 0x8d5e), LPC_WBG},
779 { PCI_VDEVICE(INTEL, 0x8d5f), LPC_WBG},
780 { PCI_VDEVICE(INTEL, 0x9c40), LPC_LPT_LP},
781 { PCI_VDEVICE(INTEL, 0x9c41), LPC_LPT_LP},
782 { PCI_VDEVICE(INTEL, 0x9c42), LPC_LPT_LP},
783 { PCI_VDEVICE(INTEL, 0x9c43), LPC_LPT_LP},
784 { PCI_VDEVICE(INTEL, 0x9c44), LPC_LPT_LP},
785 { PCI_VDEVICE(INTEL, 0x9c45), LPC_LPT_LP},
786 { PCI_VDEVICE(INTEL, 0x9c46), LPC_LPT_LP},
787 { PCI_VDEVICE(INTEL, 0x9c47), LPC_LPT_LP},
788 { PCI_VDEVICE(INTEL, 0x9cc1), LPC_WPT_LP},
789 { PCI_VDEVICE(INTEL, 0x9cc2), LPC_WPT_LP},
790 { PCI_VDEVICE(INTEL, 0x9cc3), LPC_WPT_LP},
791 { PCI_VDEVICE(INTEL, 0x9cc5), LPC_WPT_LP},
792 { PCI_VDEVICE(INTEL, 0x9cc6), LPC_WPT_LP},
793 { PCI_VDEVICE(INTEL, 0x9cc7), LPC_WPT_LP},
794 { PCI_VDEVICE(INTEL, 0x9cc9), LPC_WPT_LP},
795 { PCI_VDEVICE(INTEL, 0xa1c1), LPC_LEWISBURG},
796 { PCI_VDEVICE(INTEL, 0xa1c2), LPC_LEWISBURG},
797 { PCI_VDEVICE(INTEL, 0xa1c3), LPC_LEWISBURG},
798 { PCI_VDEVICE(INTEL, 0xa1c4), LPC_LEWISBURG},
799 { PCI_VDEVICE(INTEL, 0xa1c5), LPC_LEWISBURG},
800 { PCI_VDEVICE(INTEL, 0xa1c6), LPC_LEWISBURG},
801 { PCI_VDEVICE(INTEL, 0xa1c7), LPC_LEWISBURG},
802 { PCI_VDEVICE(INTEL, 0xa242), LPC_LEWISBURG},
803 { PCI_VDEVICE(INTEL, 0xa243), LPC_LEWISBURG},
804 { 0, }, /* End of list */
805};
806MODULE_DEVICE_TABLE(pci, lpc_ich_ids);
807
808static void lpc_ich_restore_config_space(struct pci_dev *dev)
809{
810 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
811
812 if (priv->abase_save >= 0) {
813 pci_write_config_byte(dev, priv->abase, priv->abase_save);
814 priv->abase_save = -1;
815 }
816
817 if (priv->actrl_pbase_save >= 0) {
818 pci_write_config_byte(dev, priv->actrl_pbase,
819 priv->actrl_pbase_save);
820 priv->actrl_pbase_save = -1;
821 }
822
823 if (priv->gctrl_save >= 0) {
824 pci_write_config_byte(dev, priv->gctrl, priv->gctrl_save);
825 priv->gctrl_save = -1;
826 }
827}
828
829static void lpc_ich_enable_acpi_space(struct pci_dev *dev)
830{
831 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
832 u8 reg_save;
833
834 switch (lpc_chipset_info[priv->chipset].iTCO_version) {
835 case 3:
836 /*
837 * Some chipsets (eg Avoton) enable the ACPI space in the
838 * ACPI BASE register.
839 */
840 pci_read_config_byte(dev, priv->abase, ®_save);
841 pci_write_config_byte(dev, priv->abase, reg_save | 0x2);
842 priv->abase_save = reg_save;
843 break;
844 default:
845 /*
846 * Most chipsets enable the ACPI space in the ACPI control
847 * register.
848 */
849 pci_read_config_byte(dev, priv->actrl_pbase, ®_save);
850 pci_write_config_byte(dev, priv->actrl_pbase, reg_save | 0x80);
851 priv->actrl_pbase_save = reg_save;
852 break;
853 }
854}
855
856static void lpc_ich_enable_gpio_space(struct pci_dev *dev)
857{
858 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
859 u8 reg_save;
860
861 pci_read_config_byte(dev, priv->gctrl, ®_save);
862 pci_write_config_byte(dev, priv->gctrl, reg_save | 0x10);
863 priv->gctrl_save = reg_save;
864}
865
866static void lpc_ich_enable_pmc_space(struct pci_dev *dev)
867{
868 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
869 u8 reg_save;
870
871 pci_read_config_byte(dev, priv->actrl_pbase, ®_save);
872 pci_write_config_byte(dev, priv->actrl_pbase, reg_save | 0x2);
873
874 priv->actrl_pbase_save = reg_save;
875}
876
877static int lpc_ich_finalize_wdt_cell(struct pci_dev *dev)
878{
879 struct itco_wdt_platform_data *pdata;
880 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
881 struct lpc_ich_info *info;
882 struct mfd_cell *cell = &lpc_ich_wdt_cell;
883
884 pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL);
885 if (!pdata)
886 return -ENOMEM;
887
888 info = &lpc_chipset_info[priv->chipset];
889
890 pdata->version = info->iTCO_version;
891 strlcpy(pdata->name, info->name, sizeof(pdata->name));
892
893 cell->platform_data = pdata;
894 cell->pdata_size = sizeof(*pdata);
895 return 0;
896}
897
898static void lpc_ich_finalize_gpio_cell(struct pci_dev *dev)
899{
900 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
901 struct mfd_cell *cell = &lpc_ich_gpio_cell;
902
903 cell->platform_data = &lpc_chipset_info[priv->chipset];
904 cell->pdata_size = sizeof(struct lpc_ich_info);
905}
906
907/*
908 * We don't check for resource conflict globally. There are 2 or 3 independent
909 * GPIO groups and it's enough to have access to one of these to instantiate
910 * the device.
911 */
912static int lpc_ich_check_conflict_gpio(struct resource *res)
913{
914 int ret;
915 u8 use_gpio = 0;
916
917 if (resource_size(res) >= 0x50 &&
918 !acpi_check_region(res->start + 0x40, 0x10, "LPC ICH GPIO3"))
919 use_gpio |= 1 << 2;
920
921 if (!acpi_check_region(res->start + 0x30, 0x10, "LPC ICH GPIO2"))
922 use_gpio |= 1 << 1;
923
924 ret = acpi_check_region(res->start + 0x00, 0x30, "LPC ICH GPIO1");
925 if (!ret)
926 use_gpio |= 1 << 0;
927
928 return use_gpio ? use_gpio : ret;
929}
930
931static int lpc_ich_init_gpio(struct pci_dev *dev)
932{
933 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
934 u32 base_addr_cfg;
935 u32 base_addr;
936 int ret;
937 bool acpi_conflict = false;
938 struct resource *res;
939
940 /* Setup power management base register */
941 pci_read_config_dword(dev, priv->abase, &base_addr_cfg);
942 base_addr = base_addr_cfg & 0x0000ff80;
943 if (!base_addr) {
944 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n");
945 lpc_ich_gpio_cell.num_resources--;
946 goto gpe0_done;
947 }
948
949 res = &gpio_ich_res[ICH_RES_GPE0];
950 res->start = base_addr + ACPIBASE_GPE_OFF;
951 res->end = base_addr + ACPIBASE_GPE_END;
952 ret = acpi_check_resource_conflict(res);
953 if (ret) {
954 /*
955 * This isn't fatal for the GPIO, but we have to make sure that
956 * the platform_device subsystem doesn't see this resource
957 * or it will register an invalid region.
958 */
959 lpc_ich_gpio_cell.num_resources--;
960 acpi_conflict = true;
961 } else {
962 lpc_ich_enable_acpi_space(dev);
963 }
964
965gpe0_done:
966 /* Setup GPIO base register */
967 pci_read_config_dword(dev, priv->gbase, &base_addr_cfg);
968 base_addr = base_addr_cfg & 0x0000ff80;
969 if (!base_addr) {
970 dev_notice(&dev->dev, "I/O space for GPIO uninitialized\n");
971 ret = -ENODEV;
972 goto gpio_done;
973 }
974
975 /* Older devices provide fewer GPIO and have a smaller resource size. */
976 res = &gpio_ich_res[ICH_RES_GPIO];
977 res->start = base_addr;
978 switch (lpc_chipset_info[priv->chipset].gpio_version) {
979 case ICH_V5_GPIO:
980 case ICH_V10CORP_GPIO:
981 res->end = res->start + 128 - 1;
982 break;
983 default:
984 res->end = res->start + 64 - 1;
985 break;
986 }
987
988 ret = lpc_ich_check_conflict_gpio(res);
989 if (ret < 0) {
990 /* this isn't necessarily fatal for the GPIO */
991 acpi_conflict = true;
992 goto gpio_done;
993 }
994 lpc_chipset_info[priv->chipset].use_gpio = ret;
995 lpc_ich_enable_gpio_space(dev);
996
997 lpc_ich_finalize_gpio_cell(dev);
998 ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO,
999 &lpc_ich_gpio_cell, 1, NULL, 0, NULL);
1000
1001gpio_done:
1002 if (acpi_conflict)
1003 pr_warn("Resource conflict(s) found affecting %s\n",
1004 lpc_ich_gpio_cell.name);
1005 return ret;
1006}
1007
1008static int lpc_ich_init_wdt(struct pci_dev *dev)
1009{
1010 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
1011 u32 base_addr_cfg;
1012 u32 base_addr;
1013 int ret;
1014 struct resource *res;
1015
1016 /* If we have ACPI based watchdog use that instead */
1017 if (acpi_has_watchdog())
1018 return -ENODEV;
1019
1020 /* Setup power management base register */
1021 pci_read_config_dword(dev, priv->abase, &base_addr_cfg);
1022 base_addr = base_addr_cfg & 0x0000ff80;
1023 if (!base_addr) {
1024 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n");
1025 ret = -ENODEV;
1026 goto wdt_done;
1027 }
1028
1029 res = wdt_io_res(ICH_RES_IO_TCO);
1030 res->start = base_addr + ACPIBASE_TCO_OFF;
1031 res->end = base_addr + ACPIBASE_TCO_END;
1032
1033 res = wdt_io_res(ICH_RES_IO_SMI);
1034 res->start = base_addr + ACPIBASE_SMI_OFF;
1035 res->end = base_addr + ACPIBASE_SMI_END;
1036
1037 lpc_ich_enable_acpi_space(dev);
1038
1039 /*
1040 * iTCO v2:
1041 * Get the Memory-Mapped GCS register. To get access to it
1042 * we have to read RCBA from PCI Config space 0xf0 and use
1043 * it as base. GCS = RCBA + ICH6_GCS(0x3410).
1044 *
1045 * iTCO v3:
1046 * Get the Power Management Configuration register. To get access
1047 * to it we have to read the PMC BASE from config space and address
1048 * the register at offset 0x8.
1049 */
1050 if (lpc_chipset_info[priv->chipset].iTCO_version == 1) {
1051 /* Don't register iomem for TCO ver 1 */
1052 lpc_ich_wdt_cell.num_resources--;
1053 } else if (lpc_chipset_info[priv->chipset].iTCO_version == 2) {
1054 pci_read_config_dword(dev, RCBABASE, &base_addr_cfg);
1055 base_addr = base_addr_cfg & 0xffffc000;
1056 if (!(base_addr_cfg & 1)) {
1057 dev_notice(&dev->dev, "RCBA is disabled by "
1058 "hardware/BIOS, device disabled\n");
1059 ret = -ENODEV;
1060 goto wdt_done;
1061 }
1062 res = wdt_mem_res(ICH_RES_MEM_GCS_PMC);
1063 res->start = base_addr + ACPIBASE_GCS_OFF;
1064 res->end = base_addr + ACPIBASE_GCS_END;
1065 } else if (lpc_chipset_info[priv->chipset].iTCO_version == 3) {
1066 lpc_ich_enable_pmc_space(dev);
1067 pci_read_config_dword(dev, ACPICTRL_PMCBASE, &base_addr_cfg);
1068 base_addr = base_addr_cfg & 0xfffffe00;
1069
1070 res = wdt_mem_res(ICH_RES_MEM_GCS_PMC);
1071 res->start = base_addr + ACPIBASE_PMC_OFF;
1072 res->end = base_addr + ACPIBASE_PMC_END;
1073 }
1074
1075 ret = lpc_ich_finalize_wdt_cell(dev);
1076 if (ret)
1077 goto wdt_done;
1078
1079 ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO,
1080 &lpc_ich_wdt_cell, 1, NULL, 0, NULL);
1081
1082wdt_done:
1083 return ret;
1084}
1085
1086static int lpc_ich_init_spi(struct pci_dev *dev)
1087{
1088 struct lpc_ich_priv *priv = pci_get_drvdata(dev);
1089 struct resource *res = &intel_spi_res[0];
1090 struct intel_spi_boardinfo *info;
1091 u32 spi_base, rcba, bcr;
1092
1093 info = devm_kzalloc(&dev->dev, sizeof(*info), GFP_KERNEL);
1094 if (!info)
1095 return -ENOMEM;
1096
1097 info->type = lpc_chipset_info[priv->chipset].spi_type;
1098
1099 switch (info->type) {
1100 case INTEL_SPI_BYT:
1101 pci_read_config_dword(dev, SPIBASE_BYT, &spi_base);
1102 if (spi_base & SPIBASE_BYT_EN) {
1103 res->start = spi_base & ~(SPIBASE_BYT_SZ - 1);
1104 res->end = res->start + SPIBASE_BYT_SZ - 1;
1105 }
1106 break;
1107
1108 case INTEL_SPI_LPT:
1109 pci_read_config_dword(dev, RCBABASE, &rcba);
1110 if (rcba & 1) {
1111 spi_base = round_down(rcba, SPIBASE_LPT_SZ);
1112 res->start = spi_base + SPIBASE_LPT;
1113 res->end = res->start + SPIBASE_LPT_SZ - 1;
1114
1115 pci_read_config_dword(dev, BCR, &bcr);
1116 info->writeable = !!(bcr & BCR_WPD);
1117 }
1118 break;
1119
1120 case INTEL_SPI_BXT: {
1121 unsigned int p2sb = PCI_DEVFN(13, 0);
1122 unsigned int spi = PCI_DEVFN(13, 2);
1123 struct pci_bus *bus = dev->bus;
1124
1125 /*
1126 * The P2SB is hidden by BIOS and we need to unhide it in
1127 * order to read BAR of the SPI flash device. Once that is
1128 * done we hide it again.
1129 */
1130 pci_bus_write_config_byte(bus, p2sb, 0xe1, 0x0);
1131 pci_bus_read_config_dword(bus, spi, PCI_BASE_ADDRESS_0,
1132 &spi_base);
1133 if (spi_base != ~0) {
1134 res->start = spi_base & 0xfffffff0;
1135 res->end = res->start + SPIBASE_APL_SZ - 1;
1136
1137 pci_bus_read_config_dword(bus, spi, BCR, &bcr);
1138 info->writeable = !!(bcr & BCR_WPD);
1139 }
1140
1141 pci_bus_write_config_byte(bus, p2sb, 0xe1, 0x1);
1142 break;
1143 }
1144
1145 default:
1146 return -EINVAL;
1147 }
1148
1149 if (!res->start)
1150 return -ENODEV;
1151
1152 lpc_ich_spi_cell.platform_data = info;
1153 lpc_ich_spi_cell.pdata_size = sizeof(*info);
1154
1155 return mfd_add_devices(&dev->dev, PLATFORM_DEVID_NONE,
1156 &lpc_ich_spi_cell, 1, NULL, 0, NULL);
1157}
1158
1159static int lpc_ich_probe(struct pci_dev *dev,
1160 const struct pci_device_id *id)
1161{
1162 struct lpc_ich_priv *priv;
1163 int ret;
1164 bool cell_added = false;
1165
1166 priv = devm_kzalloc(&dev->dev,
1167 sizeof(struct lpc_ich_priv), GFP_KERNEL);
1168 if (!priv)
1169 return -ENOMEM;
1170
1171 priv->chipset = id->driver_data;
1172
1173 priv->actrl_pbase_save = -1;
1174 priv->abase_save = -1;
1175
1176 priv->abase = ACPIBASE;
1177 priv->actrl_pbase = ACPICTRL_PMCBASE;
1178
1179 priv->gctrl_save = -1;
1180 if (priv->chipset <= LPC_ICH5) {
1181 priv->gbase = GPIOBASE_ICH0;
1182 priv->gctrl = GPIOCTRL_ICH0;
1183 } else {
1184 priv->gbase = GPIOBASE_ICH6;
1185 priv->gctrl = GPIOCTRL_ICH6;
1186 }
1187
1188 pci_set_drvdata(dev, priv);
1189
1190 if (lpc_chipset_info[priv->chipset].iTCO_version) {
1191 ret = lpc_ich_init_wdt(dev);
1192 if (!ret)
1193 cell_added = true;
1194 }
1195
1196 if (lpc_chipset_info[priv->chipset].gpio_version) {
1197 ret = lpc_ich_init_gpio(dev);
1198 if (!ret)
1199 cell_added = true;
1200 }
1201
1202 if (lpc_chipset_info[priv->chipset].spi_type) {
1203 ret = lpc_ich_init_spi(dev);
1204 if (!ret)
1205 cell_added = true;
1206 }
1207
1208 /*
1209 * We only care if at least one or none of the cells registered
1210 * successfully.
1211 */
1212 if (!cell_added) {
1213 dev_warn(&dev->dev, "No MFD cells added\n");
1214 lpc_ich_restore_config_space(dev);
1215 return -ENODEV;
1216 }
1217
1218 return 0;
1219}
1220
1221static void lpc_ich_remove(struct pci_dev *dev)
1222{
1223 mfd_remove_devices(&dev->dev);
1224 lpc_ich_restore_config_space(dev);
1225}
1226
1227static struct pci_driver lpc_ich_driver = {
1228 .name = "lpc_ich",
1229 .id_table = lpc_ich_ids,
1230 .probe = lpc_ich_probe,
1231 .remove = lpc_ich_remove,
1232};
1233
1234module_pci_driver(lpc_ich_driver);
1235
1236MODULE_AUTHOR("Aaron Sierra <asierra@xes-inc.com>");
1237MODULE_DESCRIPTION("LPC interface for Intel ICH");
1238MODULE_LICENSE("GPL");