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linux/audit.h: move ptrace.h include to kernel header
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / mfd / lpc_ich.c
blobd9d930302e98123c756e47477ca95cac0acebc59
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 */
54
55 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
56
57 #include <linux/init.h>
58 #include <linux/kernel.h>
59 #include <linux/module.h>
60 #include <linux/errno.h>
61 #include <linux/acpi.h>
62 #include <linux/pci.h>
63 #include <linux/mfd/core.h>
64 #include <linux/mfd/lpc_ich.h>
65
66 #define ACPIBASE 0x40
67 #define ACPIBASE_GPE_OFF 0x28
68 #define ACPIBASE_GPE_END 0x2f
69 #define ACPIBASE_SMI_OFF 0x30
70 #define ACPIBASE_SMI_END 0x33
71 #define ACPIBASE_TCO_OFF 0x60
72 #define ACPIBASE_TCO_END 0x7f
73 #define ACPICTRL 0x44
74
75 #define ACPIBASE_GCS_OFF 0x3410
76 #define ACPIBASE_GCS_END 0x3414
77
78 #define GPIOBASE 0x48
79 #define GPIOCTRL 0x4C
80
81 #define RCBABASE 0xf0
82
83 #define wdt_io_res(i) wdt_res(0, i)
84 #define wdt_mem_res(i) wdt_res(ICH_RES_MEM_OFF, i)
85 #define wdt_res(b, i) (&wdt_ich_res[(b) + (i)])
86
87 static int lpc_ich_acpi_save = -1;
88 static int lpc_ich_gpio_save = -1;
89
90 static struct resource wdt_ich_res[] = {
91 /* ACPI - TCO */
92 {
93 .flags = IORESOURCE_IO,
94 },
95 /* ACPI - SMI */
96 {
97 .flags = IORESOURCE_IO,
98 },
99 /* GCS */
100 {
101 .flags = IORESOURCE_MEM,
102 },
103 };
104
105 static struct resource gpio_ich_res[] = {
106 /* GPIO */
107 {
108 .flags = IORESOURCE_IO,
109 },
110 /* ACPI - GPE0 */
111 {
112 .flags = IORESOURCE_IO,
113 },
114 };
115
116 enum lpc_cells {
117 LPC_WDT = 0,
118 LPC_GPIO,
119 };
120
121 static struct mfd_cell lpc_ich_cells[] = {
122 [LPC_WDT] = {
123 .name = "iTCO_wdt",
124 .num_resources = ARRAY_SIZE(wdt_ich_res),
125 .resources = wdt_ich_res,
126 .ignore_resource_conflicts = true,
127 },
128 [LPC_GPIO] = {
129 .name = "gpio_ich",
130 .num_resources = ARRAY_SIZE(gpio_ich_res),
131 .resources = gpio_ich_res,
132 .ignore_resource_conflicts = true,
133 },
134 };
135
136 /* chipset related info */
137 enum lpc_chipsets {
138 LPC_ICH = 0, /* ICH */
139 LPC_ICH0, /* ICH0 */
140 LPC_ICH2, /* ICH2 */
141 LPC_ICH2M, /* ICH2-M */
142 LPC_ICH3, /* ICH3-S */
143 LPC_ICH3M, /* ICH3-M */
144 LPC_ICH4, /* ICH4 */
145 LPC_ICH4M, /* ICH4-M */
146 LPC_CICH, /* C-ICH */
147 LPC_ICH5, /* ICH5 & ICH5R */
148 LPC_6300ESB, /* 6300ESB */
149 LPC_ICH6, /* ICH6 & ICH6R */
150 LPC_ICH6M, /* ICH6-M */
151 LPC_ICH6W, /* ICH6W & ICH6RW */
152 LPC_631XESB, /* 631xESB/632xESB */
153 LPC_ICH7, /* ICH7 & ICH7R */
154 LPC_ICH7DH, /* ICH7DH */
155 LPC_ICH7M, /* ICH7-M & ICH7-U */
156 LPC_ICH7MDH, /* ICH7-M DH */
157 LPC_NM10, /* NM10 */
158 LPC_ICH8, /* ICH8 & ICH8R */
159 LPC_ICH8DH, /* ICH8DH */
160 LPC_ICH8DO, /* ICH8DO */
161 LPC_ICH8M, /* ICH8M */
162 LPC_ICH8ME, /* ICH8M-E */
163 LPC_ICH9, /* ICH9 */
164 LPC_ICH9R, /* ICH9R */
165 LPC_ICH9DH, /* ICH9DH */
166 LPC_ICH9DO, /* ICH9DO */
167 LPC_ICH9M, /* ICH9M */
168 LPC_ICH9ME, /* ICH9M-E */
169 LPC_ICH10, /* ICH10 */
170 LPC_ICH10R, /* ICH10R */
171 LPC_ICH10D, /* ICH10D */
172 LPC_ICH10DO, /* ICH10DO */
173 LPC_PCH, /* PCH Desktop Full Featured */
174 LPC_PCHM, /* PCH Mobile Full Featured */
175 LPC_P55, /* P55 */
176 LPC_PM55, /* PM55 */
177 LPC_H55, /* H55 */
178 LPC_QM57, /* QM57 */
179 LPC_H57, /* H57 */
180 LPC_HM55, /* HM55 */
181 LPC_Q57, /* Q57 */
182 LPC_HM57, /* HM57 */
183 LPC_PCHMSFF, /* PCH Mobile SFF Full Featured */
184 LPC_QS57, /* QS57 */
185 LPC_3400, /* 3400 */
186 LPC_3420, /* 3420 */
187 LPC_3450, /* 3450 */
188 LPC_EP80579, /* EP80579 */
189 LPC_CPT, /* Cougar Point */
190 LPC_CPTD, /* Cougar Point Desktop */
191 LPC_CPTM, /* Cougar Point Mobile */
192 LPC_PBG, /* Patsburg */
193 LPC_DH89XXCC, /* DH89xxCC */
194 LPC_PPT, /* Panther Point */
195 LPC_LPT, /* Lynx Point */
196 LPC_LPT_LP, /* Lynx Point-LP */
197 };
198
199 struct lpc_ich_info lpc_chipset_info[] = {
200 [LPC_ICH] = {
201 .name = "ICH",
202 .iTCO_version = 1,
203 },
204 [LPC_ICH0] = {
205 .name = "ICH0",
206 .iTCO_version = 1,
207 },
208 [LPC_ICH2] = {
209 .name = "ICH2",
210 .iTCO_version = 1,
211 },
212 [LPC_ICH2M] = {
213 .name = "ICH2-M",
214 .iTCO_version = 1,
215 },
216 [LPC_ICH3] = {
217 .name = "ICH3-S",
218 .iTCO_version = 1,
219 },
220 [LPC_ICH3M] = {
221 .name = "ICH3-M",
222 .iTCO_version = 1,
223 },
224 [LPC_ICH4] = {
225 .name = "ICH4",
226 .iTCO_version = 1,
227 },
228 [LPC_ICH4M] = {
229 .name = "ICH4-M",
230 .iTCO_version = 1,
231 },
232 [LPC_CICH] = {
233 .name = "C-ICH",
234 .iTCO_version = 1,
235 },
236 [LPC_ICH5] = {
237 .name = "ICH5 or ICH5R",
238 .iTCO_version = 1,
239 },
240 [LPC_6300ESB] = {
241 .name = "6300ESB",
242 .iTCO_version = 1,
243 },
244 [LPC_ICH6] = {
245 .name = "ICH6 or ICH6R",
246 .iTCO_version = 2,
247 .gpio_version = ICH_V6_GPIO,
248 },
249 [LPC_ICH6M] = {
250 .name = "ICH6-M",
251 .iTCO_version = 2,
252 .gpio_version = ICH_V6_GPIO,
253 },
254 [LPC_ICH6W] = {
255 .name = "ICH6W or ICH6RW",
256 .iTCO_version = 2,
257 .gpio_version = ICH_V6_GPIO,
258 },
259 [LPC_631XESB] = {
260 .name = "631xESB/632xESB",
261 .iTCO_version = 2,
262 .gpio_version = ICH_V6_GPIO,
263 },
264 [LPC_ICH7] = {
265 .name = "ICH7 or ICH7R",
266 .iTCO_version = 2,
267 .gpio_version = ICH_V7_GPIO,
268 },
269 [LPC_ICH7DH] = {
270 .name = "ICH7DH",
271 .iTCO_version = 2,
272 .gpio_version = ICH_V7_GPIO,
273 },
274 [LPC_ICH7M] = {
275 .name = "ICH7-M or ICH7-U",
276 .iTCO_version = 2,
277 .gpio_version = ICH_V7_GPIO,
278 },
279 [LPC_ICH7MDH] = {
280 .name = "ICH7-M DH",
281 .iTCO_version = 2,
282 .gpio_version = ICH_V7_GPIO,
283 },
284 [LPC_NM10] = {
285 .name = "NM10",
286 .iTCO_version = 2,
287 },
288 [LPC_ICH8] = {
289 .name = "ICH8 or ICH8R",
290 .iTCO_version = 2,
291 .gpio_version = ICH_V7_GPIO,
292 },
293 [LPC_ICH8DH] = {
294 .name = "ICH8DH",
295 .iTCO_version = 2,
296 .gpio_version = ICH_V7_GPIO,
297 },
298 [LPC_ICH8DO] = {
299 .name = "ICH8DO",
300 .iTCO_version = 2,
301 .gpio_version = ICH_V7_GPIO,
302 },
303 [LPC_ICH8M] = {
304 .name = "ICH8M",
305 .iTCO_version = 2,
306 .gpio_version = ICH_V7_GPIO,
307 },
308 [LPC_ICH8ME] = {
309 .name = "ICH8M-E",
310 .iTCO_version = 2,
311 .gpio_version = ICH_V7_GPIO,
312 },
313 [LPC_ICH9] = {
314 .name = "ICH9",
315 .iTCO_version = 2,
316 .gpio_version = ICH_V9_GPIO,
317 },
318 [LPC_ICH9R] = {
319 .name = "ICH9R",
320 .iTCO_version = 2,
321 .gpio_version = ICH_V9_GPIO,
322 },
323 [LPC_ICH9DH] = {
324 .name = "ICH9DH",
325 .iTCO_version = 2,
326 .gpio_version = ICH_V9_GPIO,
327 },
328 [LPC_ICH9DO] = {
329 .name = "ICH9DO",
330 .iTCO_version = 2,
331 .gpio_version = ICH_V9_GPIO,
332 },
333 [LPC_ICH9M] = {
334 .name = "ICH9M",
335 .iTCO_version = 2,
336 .gpio_version = ICH_V9_GPIO,
337 },
338 [LPC_ICH9ME] = {
339 .name = "ICH9M-E",
340 .iTCO_version = 2,
341 .gpio_version = ICH_V9_GPIO,
342 },
343 [LPC_ICH10] = {
344 .name = "ICH10",
345 .iTCO_version = 2,
346 .gpio_version = ICH_V10CONS_GPIO,
347 },
348 [LPC_ICH10R] = {
349 .name = "ICH10R",
350 .iTCO_version = 2,
351 .gpio_version = ICH_V10CONS_GPIO,
352 },
353 [LPC_ICH10D] = {
354 .name = "ICH10D",
355 .iTCO_version = 2,
356 .gpio_version = ICH_V10CORP_GPIO,
357 },
358 [LPC_ICH10DO] = {
359 .name = "ICH10DO",
360 .iTCO_version = 2,
361 .gpio_version = ICH_V10CORP_GPIO,
362 },
363 [LPC_PCH] = {
364 .name = "PCH Desktop Full Featured",
365 .iTCO_version = 2,
366 .gpio_version = ICH_V5_GPIO,
367 },
368 [LPC_PCHM] = {
369 .name = "PCH Mobile Full Featured",
370 .iTCO_version = 2,
371 .gpio_version = ICH_V5_GPIO,
372 },
373 [LPC_P55] = {
374 .name = "P55",
375 .iTCO_version = 2,
376 .gpio_version = ICH_V5_GPIO,
377 },
378 [LPC_PM55] = {
379 .name = "PM55",
380 .iTCO_version = 2,
381 .gpio_version = ICH_V5_GPIO,
382 },
383 [LPC_H55] = {
384 .name = "H55",
385 .iTCO_version = 2,
386 .gpio_version = ICH_V5_GPIO,
387 },
388 [LPC_QM57] = {
389 .name = "QM57",
390 .iTCO_version = 2,
391 .gpio_version = ICH_V5_GPIO,
392 },
393 [LPC_H57] = {
394 .name = "H57",
395 .iTCO_version = 2,
396 .gpio_version = ICH_V5_GPIO,
397 },
398 [LPC_HM55] = {
399 .name = "HM55",
400 .iTCO_version = 2,
401 .gpio_version = ICH_V5_GPIO,
402 },
403 [LPC_Q57] = {
404 .name = "Q57",
405 .iTCO_version = 2,
406 .gpio_version = ICH_V5_GPIO,
407 },
408 [LPC_HM57] = {
409 .name = "HM57",
410 .iTCO_version = 2,
411 .gpio_version = ICH_V5_GPIO,
412 },
413 [LPC_PCHMSFF] = {
414 .name = "PCH Mobile SFF Full Featured",
415 .iTCO_version = 2,
416 .gpio_version = ICH_V5_GPIO,
417 },
418 [LPC_QS57] = {
419 .name = "QS57",
420 .iTCO_version = 2,
421 .gpio_version = ICH_V5_GPIO,
422 },
423 [LPC_3400] = {
424 .name = "3400",
425 .iTCO_version = 2,
426 .gpio_version = ICH_V5_GPIO,
427 },
428 [LPC_3420] = {
429 .name = "3420",
430 .iTCO_version = 2,
431 .gpio_version = ICH_V5_GPIO,
432 },
433 [LPC_3450] = {
434 .name = "3450",
435 .iTCO_version = 2,
436 .gpio_version = ICH_V5_GPIO,
437 },
438 [LPC_EP80579] = {
439 .name = "EP80579",
440 .iTCO_version = 2,
441 },
442 [LPC_CPT] = {
443 .name = "Cougar Point",
444 .iTCO_version = 2,
445 .gpio_version = ICH_V5_GPIO,
446 },
447 [LPC_CPTD] = {
448 .name = "Cougar Point Desktop",
449 .iTCO_version = 2,
450 .gpio_version = ICH_V5_GPIO,
451 },
452 [LPC_CPTM] = {
453 .name = "Cougar Point Mobile",
454 .iTCO_version = 2,
455 .gpio_version = ICH_V5_GPIO,
456 },
457 [LPC_PBG] = {
458 .name = "Patsburg",
459 .iTCO_version = 2,
460 },
461 [LPC_DH89XXCC] = {
462 .name = "DH89xxCC",
463 .iTCO_version = 2,
464 },
465 [LPC_PPT] = {
466 .name = "Panther Point",
467 .iTCO_version = 2,
468 },
469 [LPC_LPT] = {
470 .name = "Lynx Point",
471 .iTCO_version = 2,
472 },
473 [LPC_LPT_LP] = {
474 .name = "Lynx Point_LP",
475 .iTCO_version = 2,
476 },
477 };
478
479 /*
480 * This data only exists for exporting the supported PCI ids
481 * via MODULE_DEVICE_TABLE. We do not actually register a
482 * pci_driver, because the I/O Controller Hub has also other
483 * functions that probably will be registered by other drivers.
484 */
485 static DEFINE_PCI_DEVICE_TABLE(lpc_ich_ids) = {
486 { PCI_VDEVICE(INTEL, 0x2410), LPC_ICH},
487 { PCI_VDEVICE(INTEL, 0x2420), LPC_ICH0},
488 { PCI_VDEVICE(INTEL, 0x2440), LPC_ICH2},
489 { PCI_VDEVICE(INTEL, 0x244c), LPC_ICH2M},
490 { PCI_VDEVICE(INTEL, 0x2480), LPC_ICH3},
491 { PCI_VDEVICE(INTEL, 0x248c), LPC_ICH3M},
492 { PCI_VDEVICE(INTEL, 0x24c0), LPC_ICH4},
493 { PCI_VDEVICE(INTEL, 0x24cc), LPC_ICH4M},
494 { PCI_VDEVICE(INTEL, 0x2450), LPC_CICH},
495 { PCI_VDEVICE(INTEL, 0x24d0), LPC_ICH5},
496 { PCI_VDEVICE(INTEL, 0x25a1), LPC_6300ESB},
497 { PCI_VDEVICE(INTEL, 0x2640), LPC_ICH6},
498 { PCI_VDEVICE(INTEL, 0x2641), LPC_ICH6M},
499 { PCI_VDEVICE(INTEL, 0x2642), LPC_ICH6W},
500 { PCI_VDEVICE(INTEL, 0x2670), LPC_631XESB},
501 { PCI_VDEVICE(INTEL, 0x2671), LPC_631XESB},
502 { PCI_VDEVICE(INTEL, 0x2672), LPC_631XESB},
503 { PCI_VDEVICE(INTEL, 0x2673), LPC_631XESB},
504 { PCI_VDEVICE(INTEL, 0x2674), LPC_631XESB},
505 { PCI_VDEVICE(INTEL, 0x2675), LPC_631XESB},
506 { PCI_VDEVICE(INTEL, 0x2676), LPC_631XESB},
507 { PCI_VDEVICE(INTEL, 0x2677), LPC_631XESB},
508 { PCI_VDEVICE(INTEL, 0x2678), LPC_631XESB},
509 { PCI_VDEVICE(INTEL, 0x2679), LPC_631XESB},
510 { PCI_VDEVICE(INTEL, 0x267a), LPC_631XESB},
511 { PCI_VDEVICE(INTEL, 0x267b), LPC_631XESB},
512 { PCI_VDEVICE(INTEL, 0x267c), LPC_631XESB},
513 { PCI_VDEVICE(INTEL, 0x267d), LPC_631XESB},
514 { PCI_VDEVICE(INTEL, 0x267e), LPC_631XESB},
515 { PCI_VDEVICE(INTEL, 0x267f), LPC_631XESB},
516 { PCI_VDEVICE(INTEL, 0x27b8), LPC_ICH7},
517 { PCI_VDEVICE(INTEL, 0x27b0), LPC_ICH7DH},
518 { PCI_VDEVICE(INTEL, 0x27b9), LPC_ICH7M},
519 { PCI_VDEVICE(INTEL, 0x27bd), LPC_ICH7MDH},
520 { PCI_VDEVICE(INTEL, 0x27bc), LPC_NM10},
521 { PCI_VDEVICE(INTEL, 0x2810), LPC_ICH8},
522 { PCI_VDEVICE(INTEL, 0x2812), LPC_ICH8DH},
523 { PCI_VDEVICE(INTEL, 0x2814), LPC_ICH8DO},
524 { PCI_VDEVICE(INTEL, 0x2815), LPC_ICH8M},
525 { PCI_VDEVICE(INTEL, 0x2811), LPC_ICH8ME},
526 { PCI_VDEVICE(INTEL, 0x2918), LPC_ICH9},
527 { PCI_VDEVICE(INTEL, 0x2916), LPC_ICH9R},
528 { PCI_VDEVICE(INTEL, 0x2912), LPC_ICH9DH},
529 { PCI_VDEVICE(INTEL, 0x2914), LPC_ICH9DO},
530 { PCI_VDEVICE(INTEL, 0x2919), LPC_ICH9M},
531 { PCI_VDEVICE(INTEL, 0x2917), LPC_ICH9ME},
532 { PCI_VDEVICE(INTEL, 0x3a18), LPC_ICH10},
533 { PCI_VDEVICE(INTEL, 0x3a16), LPC_ICH10R},
534 { PCI_VDEVICE(INTEL, 0x3a1a), LPC_ICH10D},
535 { PCI_VDEVICE(INTEL, 0x3a14), LPC_ICH10DO},
536 { PCI_VDEVICE(INTEL, 0x3b00), LPC_PCH},
537 { PCI_VDEVICE(INTEL, 0x3b01), LPC_PCHM},
538 { PCI_VDEVICE(INTEL, 0x3b02), LPC_P55},
539 { PCI_VDEVICE(INTEL, 0x3b03), LPC_PM55},
540 { PCI_VDEVICE(INTEL, 0x3b06), LPC_H55},
541 { PCI_VDEVICE(INTEL, 0x3b07), LPC_QM57},
542 { PCI_VDEVICE(INTEL, 0x3b08), LPC_H57},
543 { PCI_VDEVICE(INTEL, 0x3b09), LPC_HM55},
544 { PCI_VDEVICE(INTEL, 0x3b0a), LPC_Q57},
545 { PCI_VDEVICE(INTEL, 0x3b0b), LPC_HM57},
546 { PCI_VDEVICE(INTEL, 0x3b0d), LPC_PCHMSFF},
547 { PCI_VDEVICE(INTEL, 0x3b0f), LPC_QS57},
548 { PCI_VDEVICE(INTEL, 0x3b12), LPC_3400},
549 { PCI_VDEVICE(INTEL, 0x3b14), LPC_3420},
550 { PCI_VDEVICE(INTEL, 0x3b16), LPC_3450},
551 { PCI_VDEVICE(INTEL, 0x5031), LPC_EP80579},
552 { PCI_VDEVICE(INTEL, 0x1c41), LPC_CPT},
553 { PCI_VDEVICE(INTEL, 0x1c42), LPC_CPTD},
554 { PCI_VDEVICE(INTEL, 0x1c43), LPC_CPTM},
555 { PCI_VDEVICE(INTEL, 0x1c44), LPC_CPT},
556 { PCI_VDEVICE(INTEL, 0x1c45), LPC_CPT},
557 { PCI_VDEVICE(INTEL, 0x1c46), LPC_CPT},
558 { PCI_VDEVICE(INTEL, 0x1c47), LPC_CPT},
559 { PCI_VDEVICE(INTEL, 0x1c48), LPC_CPT},
560 { PCI_VDEVICE(INTEL, 0x1c49), LPC_CPT},
561 { PCI_VDEVICE(INTEL, 0x1c4a), LPC_CPT},
562 { PCI_VDEVICE(INTEL, 0x1c4b), LPC_CPT},
563 { PCI_VDEVICE(INTEL, 0x1c4c), LPC_CPT},
564 { PCI_VDEVICE(INTEL, 0x1c4d), LPC_CPT},
565 { PCI_VDEVICE(INTEL, 0x1c4e), LPC_CPT},
566 { PCI_VDEVICE(INTEL, 0x1c4f), LPC_CPT},
567 { PCI_VDEVICE(INTEL, 0x1c50), LPC_CPT},
568 { PCI_VDEVICE(INTEL, 0x1c51), LPC_CPT},
569 { PCI_VDEVICE(INTEL, 0x1c52), LPC_CPT},
570 { PCI_VDEVICE(INTEL, 0x1c53), LPC_CPT},
571 { PCI_VDEVICE(INTEL, 0x1c54), LPC_CPT},
572 { PCI_VDEVICE(INTEL, 0x1c55), LPC_CPT},
573 { PCI_VDEVICE(INTEL, 0x1c56), LPC_CPT},
574 { PCI_VDEVICE(INTEL, 0x1c57), LPC_CPT},
575 { PCI_VDEVICE(INTEL, 0x1c58), LPC_CPT},
576 { PCI_VDEVICE(INTEL, 0x1c59), LPC_CPT},
577 { PCI_VDEVICE(INTEL, 0x1c5a), LPC_CPT},
578 { PCI_VDEVICE(INTEL, 0x1c5b), LPC_CPT},
579 { PCI_VDEVICE(INTEL, 0x1c5c), LPC_CPT},
580 { PCI_VDEVICE(INTEL, 0x1c5d), LPC_CPT},
581 { PCI_VDEVICE(INTEL, 0x1c5e), LPC_CPT},
582 { PCI_VDEVICE(INTEL, 0x1c5f), LPC_CPT},
583 { PCI_VDEVICE(INTEL, 0x1d40), LPC_PBG},
584 { PCI_VDEVICE(INTEL, 0x1d41), LPC_PBG},
585 { PCI_VDEVICE(INTEL, 0x2310), LPC_DH89XXCC},
586 { PCI_VDEVICE(INTEL, 0x1e40), LPC_PPT},
587 { PCI_VDEVICE(INTEL, 0x1e41), LPC_PPT},
588 { PCI_VDEVICE(INTEL, 0x1e42), LPC_PPT},
589 { PCI_VDEVICE(INTEL, 0x1e43), LPC_PPT},
590 { PCI_VDEVICE(INTEL, 0x1e44), LPC_PPT},
591 { PCI_VDEVICE(INTEL, 0x1e45), LPC_PPT},
592 { PCI_VDEVICE(INTEL, 0x1e46), LPC_PPT},
593 { PCI_VDEVICE(INTEL, 0x1e47), LPC_PPT},
594 { PCI_VDEVICE(INTEL, 0x1e48), LPC_PPT},
595 { PCI_VDEVICE(INTEL, 0x1e49), LPC_PPT},
596 { PCI_VDEVICE(INTEL, 0x1e4a), LPC_PPT},
597 { PCI_VDEVICE(INTEL, 0x1e4b), LPC_PPT},
598 { PCI_VDEVICE(INTEL, 0x1e4c), LPC_PPT},
599 { PCI_VDEVICE(INTEL, 0x1e4d), LPC_PPT},
600 { PCI_VDEVICE(INTEL, 0x1e4e), LPC_PPT},
601 { PCI_VDEVICE(INTEL, 0x1e4f), LPC_PPT},
602 { PCI_VDEVICE(INTEL, 0x1e50), LPC_PPT},
603 { PCI_VDEVICE(INTEL, 0x1e51), LPC_PPT},
604 { PCI_VDEVICE(INTEL, 0x1e52), LPC_PPT},
605 { PCI_VDEVICE(INTEL, 0x1e53), LPC_PPT},
606 { PCI_VDEVICE(INTEL, 0x1e54), LPC_PPT},
607 { PCI_VDEVICE(INTEL, 0x1e55), LPC_PPT},
608 { PCI_VDEVICE(INTEL, 0x1e56), LPC_PPT},
609 { PCI_VDEVICE(INTEL, 0x1e57), LPC_PPT},
610 { PCI_VDEVICE(INTEL, 0x1e58), LPC_PPT},
611 { PCI_VDEVICE(INTEL, 0x1e59), LPC_PPT},
612 { PCI_VDEVICE(INTEL, 0x1e5a), LPC_PPT},
613 { PCI_VDEVICE(INTEL, 0x1e5b), LPC_PPT},
614 { PCI_VDEVICE(INTEL, 0x1e5c), LPC_PPT},
615 { PCI_VDEVICE(INTEL, 0x1e5d), LPC_PPT},
616 { PCI_VDEVICE(INTEL, 0x1e5e), LPC_PPT},
617 { PCI_VDEVICE(INTEL, 0x1e5f), LPC_PPT},
618 { PCI_VDEVICE(INTEL, 0x8c40), LPC_LPT},
619 { PCI_VDEVICE(INTEL, 0x8c41), LPC_LPT},
620 { PCI_VDEVICE(INTEL, 0x8c42), LPC_LPT},
621 { PCI_VDEVICE(INTEL, 0x8c43), LPC_LPT},
622 { PCI_VDEVICE(INTEL, 0x8c44), LPC_LPT},
623 { PCI_VDEVICE(INTEL, 0x8c45), LPC_LPT},
624 { PCI_VDEVICE(INTEL, 0x8c46), LPC_LPT},
625 { PCI_VDEVICE(INTEL, 0x8c47), LPC_LPT},
626 { PCI_VDEVICE(INTEL, 0x8c48), LPC_LPT},
627 { PCI_VDEVICE(INTEL, 0x8c49), LPC_LPT},
628 { PCI_VDEVICE(INTEL, 0x8c4a), LPC_LPT},
629 { PCI_VDEVICE(INTEL, 0x8c4b), LPC_LPT},
630 { PCI_VDEVICE(INTEL, 0x8c4c), LPC_LPT},
631 { PCI_VDEVICE(INTEL, 0x8c4d), LPC_LPT},
632 { PCI_VDEVICE(INTEL, 0x8c4e), LPC_LPT},
633 { PCI_VDEVICE(INTEL, 0x8c4f), LPC_LPT},
634 { PCI_VDEVICE(INTEL, 0x8c50), LPC_LPT},
635 { PCI_VDEVICE(INTEL, 0x8c51), LPC_LPT},
636 { PCI_VDEVICE(INTEL, 0x8c52), LPC_LPT},
637 { PCI_VDEVICE(INTEL, 0x8c53), LPC_LPT},
638 { PCI_VDEVICE(INTEL, 0x8c54), LPC_LPT},
639 { PCI_VDEVICE(INTEL, 0x8c55), LPC_LPT},
640 { PCI_VDEVICE(INTEL, 0x8c56), LPC_LPT},
641 { PCI_VDEVICE(INTEL, 0x8c57), LPC_LPT},
642 { PCI_VDEVICE(INTEL, 0x8c58), LPC_LPT},
643 { PCI_VDEVICE(INTEL, 0x8c59), LPC_LPT},
644 { PCI_VDEVICE(INTEL, 0x8c5a), LPC_LPT},
645 { PCI_VDEVICE(INTEL, 0x8c5b), LPC_LPT},
646 { PCI_VDEVICE(INTEL, 0x8c5c), LPC_LPT},
647 { PCI_VDEVICE(INTEL, 0x8c5d), LPC_LPT},
648 { PCI_VDEVICE(INTEL, 0x8c5e), LPC_LPT},
649 { PCI_VDEVICE(INTEL, 0x8c5f), LPC_LPT},
650 { PCI_VDEVICE(INTEL, 0x9c40), LPC_LPT_LP},
651 { PCI_VDEVICE(INTEL, 0x9c41), LPC_LPT_LP},
652 { PCI_VDEVICE(INTEL, 0x9c42), LPC_LPT_LP},
653 { PCI_VDEVICE(INTEL, 0x9c43), LPC_LPT_LP},
654 { PCI_VDEVICE(INTEL, 0x9c44), LPC_LPT_LP},
655 { PCI_VDEVICE(INTEL, 0x9c45), LPC_LPT_LP},
656 { PCI_VDEVICE(INTEL, 0x9c46), LPC_LPT_LP},
657 { PCI_VDEVICE(INTEL, 0x9c47), LPC_LPT_LP},
658 { 0, }, /* End of list */
659 };
660 MODULE_DEVICE_TABLE(pci, lpc_ich_ids);
661
662 static void lpc_ich_restore_config_space(struct pci_dev *dev)
663 {
664 if (lpc_ich_acpi_save >= 0) {
665 pci_write_config_byte(dev, ACPICTRL, lpc_ich_acpi_save);
666 lpc_ich_acpi_save = -1;
667 }
668
669 if (lpc_ich_gpio_save >= 0) {
670 pci_write_config_byte(dev, GPIOCTRL, lpc_ich_gpio_save);
671 lpc_ich_gpio_save = -1;
672 }
673 }
674
675 static void lpc_ich_enable_acpi_space(struct pci_dev *dev)
676 {
677 u8 reg_save;
678
679 pci_read_config_byte(dev, ACPICTRL, &reg_save);
680 pci_write_config_byte(dev, ACPICTRL, reg_save | 0x10);
681 lpc_ich_acpi_save = reg_save;
682 }
683
684 static void lpc_ich_enable_gpio_space(struct pci_dev *dev)
685 {
686 u8 reg_save;
687
688 pci_read_config_byte(dev, GPIOCTRL, &reg_save);
689 pci_write_config_byte(dev, GPIOCTRL, reg_save | 0x10);
690 lpc_ich_gpio_save = reg_save;
691 }
692
693 static void lpc_ich_finalize_cell(struct mfd_cell *cell,
694 const struct pci_device_id *id)
695 {
696 cell->platform_data = &lpc_chipset_info[id->driver_data];
697 cell->pdata_size = sizeof(struct lpc_ich_info);
698 }
699
700 /*
701 * We don't check for resource conflict globally. There are 2 or 3 independent
702 * GPIO groups and it's enough to have access to one of these to instantiate
703 * the device.
704 */
705 static int lpc_ich_check_conflict_gpio(struct resource *res)
706 {
707 int ret;
708 u8 use_gpio = 0;
709
710 if (resource_size(res) >= 0x50 &&
711 !acpi_check_region(res->start + 0x40, 0x10, "LPC ICH GPIO3"))
712 use_gpio |= 1 << 2;
713
714 if (!acpi_check_region(res->start + 0x30, 0x10, "LPC ICH GPIO2"))
715 use_gpio |= 1 << 1;
716
717 ret = acpi_check_region(res->start + 0x00, 0x30, "LPC ICH GPIO1");
718 if (!ret)
719 use_gpio |= 1 << 0;
720
721 return use_gpio ? use_gpio : ret;
722 }
723
724 static int lpc_ich_init_gpio(struct pci_dev *dev,
725 const struct pci_device_id *id)
726 {
727 u32 base_addr_cfg;
728 u32 base_addr;
729 int ret;
730 bool acpi_conflict = false;
731 struct resource *res;
732
733 /* Setup power management base register */
734 pci_read_config_dword(dev, ACPIBASE, &base_addr_cfg);
735 base_addr = base_addr_cfg & 0x0000ff80;
736 if (!base_addr) {
737 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n");
738 lpc_ich_cells[LPC_GPIO].num_resources--;
739 goto gpe0_done;
740 }
741
742 res = &gpio_ich_res[ICH_RES_GPE0];
743 res->start = base_addr + ACPIBASE_GPE_OFF;
744 res->end = base_addr + ACPIBASE_GPE_END;
745 ret = acpi_check_resource_conflict(res);
746 if (ret) {
747 /*
748 * This isn't fatal for the GPIO, but we have to make sure that
749 * the platform_device subsystem doesn't see this resource
750 * or it will register an invalid region.
751 */
752 lpc_ich_cells[LPC_GPIO].num_resources--;
753 acpi_conflict = true;
754 } else {
755 lpc_ich_enable_acpi_space(dev);
756 }
757
758 gpe0_done:
759 /* Setup GPIO base register */
760 pci_read_config_dword(dev, GPIOBASE, &base_addr_cfg);
761 base_addr = base_addr_cfg & 0x0000ff80;
762 if (!base_addr) {
763 dev_notice(&dev->dev, "I/O space for GPIO uninitialized\n");
764 ret = -ENODEV;
765 goto gpio_done;
766 }
767
768 /* Older devices provide fewer GPIO and have a smaller resource size. */
769 res = &gpio_ich_res[ICH_RES_GPIO];
770 res->start = base_addr;
771 switch (lpc_chipset_info[id->driver_data].gpio_version) {
772 case ICH_V5_GPIO:
773 case ICH_V10CORP_GPIO:
774 res->end = res->start + 128 - 1;
775 break;
776 default:
777 res->end = res->start + 64 - 1;
778 break;
779 }
780
781 ret = lpc_ich_check_conflict_gpio(res);
782 if (ret < 0) {
783 /* this isn't necessarily fatal for the GPIO */
784 acpi_conflict = true;
785 goto gpio_done;
786 }
787 lpc_chipset_info[id->driver_data].use_gpio = ret;
788 lpc_ich_enable_gpio_space(dev);
789
790 lpc_ich_finalize_cell(&lpc_ich_cells[LPC_GPIO], id);
791 ret = mfd_add_devices(&dev->dev, -1, &lpc_ich_cells[LPC_GPIO],
792 1, NULL, 0, NULL);
793
794 gpio_done:
795 if (acpi_conflict)
796 pr_warn("Resource conflict(s) found affecting %s\n",
797 lpc_ich_cells[LPC_GPIO].name);
798 return ret;
799 }
800
801 static int lpc_ich_init_wdt(struct pci_dev *dev,
802 const struct pci_device_id *id)
803 {
804 u32 base_addr_cfg;
805 u32 base_addr;
806 int ret;
807 struct resource *res;
808
809 /* Setup power management base register */
810 pci_read_config_dword(dev, ACPIBASE, &base_addr_cfg);
811 base_addr = base_addr_cfg & 0x0000ff80;
812 if (!base_addr) {
813 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n");
814 ret = -ENODEV;
815 goto wdt_done;
816 }
817
818 res = wdt_io_res(ICH_RES_IO_TCO);
819 res->start = base_addr + ACPIBASE_TCO_OFF;
820 res->end = base_addr + ACPIBASE_TCO_END;
821
822 res = wdt_io_res(ICH_RES_IO_SMI);
823 res->start = base_addr + ACPIBASE_SMI_OFF;
824 res->end = base_addr + ACPIBASE_SMI_END;
825
826 lpc_ich_enable_acpi_space(dev);
827
828 /*
829 * Get the Memory-Mapped GCS register. To get access to it
830 * we have to read RCBA from PCI Config space 0xf0 and use
831 * it as base. GCS = RCBA + ICH6_GCS(0x3410).
832 */
833 if (lpc_chipset_info[id->driver_data].iTCO_version == 1) {
834 /* Don't register iomem for TCO ver 1 */
835 lpc_ich_cells[LPC_WDT].num_resources--;
836 } else {
837 pci_read_config_dword(dev, RCBABASE, &base_addr_cfg);
838 base_addr = base_addr_cfg & 0xffffc000;
839 if (!(base_addr_cfg & 1)) {
840 dev_notice(&dev->dev, "RCBA is disabled by "
841 "hardware/BIOS, device disabled\n");
842 ret = -ENODEV;
843 goto wdt_done;
844 }
845 res = wdt_mem_res(ICH_RES_MEM_GCS);
846 res->start = base_addr + ACPIBASE_GCS_OFF;
847 res->end = base_addr + ACPIBASE_GCS_END;
848 }
849
850 lpc_ich_finalize_cell(&lpc_ich_cells[LPC_WDT], id);
851 ret = mfd_add_devices(&dev->dev, -1, &lpc_ich_cells[LPC_WDT],
852 1, NULL, 0, NULL);
853
854 wdt_done:
855 return ret;
856 }
857
858 static int lpc_ich_probe(struct pci_dev *dev,
859 const struct pci_device_id *id)
860 {
861 int ret;
862 bool cell_added = false;
863
864 ret = lpc_ich_init_wdt(dev, id);
865 if (!ret)
866 cell_added = true;
867
868 ret = lpc_ich_init_gpio(dev, id);
869 if (!ret)
870 cell_added = true;
871
872 /*
873 * We only care if at least one or none of the cells registered
874 * successfully.
875 */
876 if (!cell_added) {
877 dev_warn(&dev->dev, "No MFD cells added\n");
878 lpc_ich_restore_config_space(dev);
879 return -ENODEV;
880 }
881
882 return 0;
883 }
884
885 static void lpc_ich_remove(struct pci_dev *dev)
886 {
887 mfd_remove_devices(&dev->dev);
888 lpc_ich_restore_config_space(dev);
889 }
890
891 static struct pci_driver lpc_ich_driver = {
892 .name = "lpc_ich",
893 .id_table = lpc_ich_ids,
894 .probe = lpc_ich_probe,
895 .remove = lpc_ich_remove,
896 };
897
898 static int __init lpc_ich_init(void)
899 {
900 return pci_register_driver(&lpc_ich_driver);
901 }
902
903 static void __exit lpc_ich_exit(void)
904 {
905 pci_unregister_driver(&lpc_ich_driver);
906 }
907
908 module_init(lpc_ich_init);
909 module_exit(lpc_ich_exit);
910
911 MODULE_AUTHOR("Aaron Sierra <asierra@xes-inc.com>");
912 MODULE_DESCRIPTION("LPC interface for Intel ICH");
913 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree