Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * sleep.c - ACPI sleep support. | |
3 | * | |
e2a5b420 | 4 | * Copyright (c) 2005 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> |
1da177e4 LT |
5 | * Copyright (c) 2004 David Shaohua Li <shaohua.li@intel.com> |
6 | * Copyright (c) 2000-2003 Patrick Mochel | |
7 | * Copyright (c) 2003 Open Source Development Lab | |
8 | * | |
9 | * This file is released under the GPLv2. | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/delay.h> | |
14 | #include <linux/irq.h> | |
15 | #include <linux/dmi.h> | |
16 | #include <linux/device.h> | |
17 | #include <linux/suspend.h> | |
e49f711c | 18 | #include <linux/reboot.h> |
d1ee4335 | 19 | #include <linux/acpi.h> |
a2ef5c4f | 20 | #include <linux/module.h> |
b24e5098 | 21 | #include <linux/pm_runtime.h> |
f216cc37 AS |
22 | |
23 | #include <asm/io.h> | |
24 | ||
1da177e4 LT |
25 | #include <acpi/acpi_bus.h> |
26 | #include <acpi/acpi_drivers.h> | |
e60cc7a6 BH |
27 | |
28 | #include "internal.h" | |
1da177e4 LT |
29 | #include "sleep.h" |
30 | ||
01eac60b | 31 | static u8 sleep_states[ACPI_S_STATE_COUNT]; |
1da177e4 | 32 | |
e49f711c ZY |
33 | static void acpi_sleep_tts_switch(u32 acpi_state) |
34 | { | |
35 | union acpi_object in_arg = { ACPI_TYPE_INTEGER }; | |
36 | struct acpi_object_list arg_list = { 1, &in_arg }; | |
37 | acpi_status status = AE_OK; | |
38 | ||
39 | in_arg.integer.value = acpi_state; | |
40 | status = acpi_evaluate_object(NULL, "\\_TTS", &arg_list, NULL); | |
41 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { | |
42 | /* | |
43 | * OS can't evaluate the _TTS object correctly. Some warning | |
44 | * message will be printed. But it won't break anything. | |
45 | */ | |
46 | printk(KERN_NOTICE "Failure in evaluating _TTS object\n"); | |
47 | } | |
48 | } | |
49 | ||
50 | static int tts_notify_reboot(struct notifier_block *this, | |
51 | unsigned long code, void *x) | |
52 | { | |
53 | acpi_sleep_tts_switch(ACPI_STATE_S5); | |
54 | return NOTIFY_DONE; | |
55 | } | |
56 | ||
57 | static struct notifier_block tts_notifier = { | |
58 | .notifier_call = tts_notify_reboot, | |
59 | .next = NULL, | |
60 | .priority = 0, | |
61 | }; | |
62 | ||
c9b6c8f6 | 63 | static int acpi_sleep_prepare(u32 acpi_state) |
2f3f2226 AS |
64 | { |
65 | #ifdef CONFIG_ACPI_SLEEP | |
66 | /* do we have a wakeup address for S2 and S3? */ | |
67 | if (acpi_state == ACPI_STATE_S3) { | |
319b6ffc | 68 | if (!acpi_wakeup_address) |
2f3f2226 | 69 | return -EFAULT; |
319b6ffc | 70 | acpi_set_firmware_waking_vector(acpi_wakeup_address); |
2f3f2226 AS |
71 | |
72 | } | |
73 | ACPI_FLUSH_CPU_CACHE(); | |
2f3f2226 | 74 | #endif |
c9b6c8f6 RW |
75 | printk(KERN_INFO PREFIX "Preparing to enter system sleep state S%d\n", |
76 | acpi_state); | |
78f5f023 | 77 | acpi_enable_wakeup_devices(acpi_state); |
2f3f2226 AS |
78 | acpi_enter_sleep_state_prep(acpi_state); |
79 | return 0; | |
80 | } | |
81 | ||
5d1e072b | 82 | #ifdef CONFIG_ACPI_SLEEP |
091aad6a | 83 | static u32 acpi_target_sleep_state = ACPI_STATE_S0; |
a5ca7345 | 84 | static bool pwr_btn_event_pending; |
091aad6a | 85 | |
72ad5d77 RW |
86 | /* |
87 | * The ACPI specification wants us to save NVS memory regions during hibernation | |
88 | * and to restore them during the subsequent resume. Windows does that also for | |
89 | * suspend to RAM. However, it is known that this mechanism does not work on | |
90 | * all machines, so we allow the user to disable it with the help of the | |
91 | * 'acpi_sleep=nonvs' kernel command line option. | |
92 | */ | |
93 | static bool nvs_nosave; | |
94 | ||
95 | void __init acpi_nvs_nosave(void) | |
96 | { | |
97 | nvs_nosave = true; | |
98 | } | |
99 | ||
d8f3de0d RW |
100 | /* |
101 | * ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the | |
102 | * user to request that behavior by using the 'acpi_old_suspend_ordering' | |
103 | * kernel command line option that causes the following variable to be set. | |
104 | */ | |
105 | static bool old_suspend_ordering; | |
106 | ||
107 | void __init acpi_old_suspend_ordering(void) | |
108 | { | |
109 | old_suspend_ordering = true; | |
110 | } | |
111 | ||
112 | /** | |
d5a64513 | 113 | * acpi_pm_freeze - Disable the GPEs and suspend EC transactions. |
d8f3de0d | 114 | */ |
d5a64513 | 115 | static int acpi_pm_freeze(void) |
d8f3de0d | 116 | { |
3d97e426 | 117 | acpi_disable_all_gpes(); |
bd6f10a5 | 118 | acpi_os_wait_events_complete(); |
fe955682 | 119 | acpi_ec_block_transactions(); |
d8f3de0d RW |
120 | return 0; |
121 | } | |
122 | ||
c5f7a1bb RW |
123 | /** |
124 | * acpi_pre_suspend - Enable wakeup devices, "freeze" EC and save NVS. | |
125 | */ | |
126 | static int acpi_pm_pre_suspend(void) | |
127 | { | |
128 | acpi_pm_freeze(); | |
26fcaf60 | 129 | return suspend_nvs_save(); |
c5f7a1bb RW |
130 | } |
131 | ||
d8f3de0d RW |
132 | /** |
133 | * __acpi_pm_prepare - Prepare the platform to enter the target state. | |
134 | * | |
135 | * If necessary, set the firmware waking vector and do arch-specific | |
136 | * nastiness to get the wakeup code to the waking vector. | |
137 | */ | |
138 | static int __acpi_pm_prepare(void) | |
139 | { | |
140 | int error = acpi_sleep_prepare(acpi_target_sleep_state); | |
d8f3de0d RW |
141 | if (error) |
142 | acpi_target_sleep_state = ACPI_STATE_S0; | |
c5f7a1bb | 143 | |
d8f3de0d RW |
144 | return error; |
145 | } | |
146 | ||
147 | /** | |
148 | * acpi_pm_prepare - Prepare the platform to enter the target sleep | |
149 | * state and disable the GPEs. | |
150 | */ | |
151 | static int acpi_pm_prepare(void) | |
152 | { | |
153 | int error = __acpi_pm_prepare(); | |
d8f3de0d | 154 | if (!error) |
26fcaf60 | 155 | error = acpi_pm_pre_suspend(); |
d5a64513 | 156 | |
d8f3de0d RW |
157 | return error; |
158 | } | |
159 | ||
c10d7a13 DD |
160 | static int find_powerf_dev(struct device *dev, void *data) |
161 | { | |
162 | struct acpi_device *device = to_acpi_device(dev); | |
163 | const char *hid = acpi_device_hid(device); | |
164 | ||
165 | return !strcmp(hid, ACPI_BUTTON_HID_POWERF); | |
166 | } | |
167 | ||
d8f3de0d RW |
168 | /** |
169 | * acpi_pm_finish - Instruct the platform to leave a sleep state. | |
170 | * | |
171 | * This is called after we wake back up (or if entering the sleep state | |
172 | * failed). | |
173 | */ | |
174 | static void acpi_pm_finish(void) | |
175 | { | |
c10d7a13 | 176 | struct device *pwr_btn_dev; |
d8f3de0d RW |
177 | u32 acpi_state = acpi_target_sleep_state; |
178 | ||
42de5532 | 179 | acpi_ec_unblock_transactions(); |
d551d81d | 180 | suspend_nvs_free(); |
2a6b6976 | 181 | |
d8f3de0d RW |
182 | if (acpi_state == ACPI_STATE_S0) |
183 | return; | |
1da177e4 | 184 | |
d8f3de0d RW |
185 | printk(KERN_INFO PREFIX "Waking up from system sleep state S%d\n", |
186 | acpi_state); | |
78f5f023 | 187 | acpi_disable_wakeup_devices(acpi_state); |
d8f3de0d RW |
188 | acpi_leave_sleep_state(acpi_state); |
189 | ||
190 | /* reset firmware waking vector */ | |
191 | acpi_set_firmware_waking_vector((acpi_physical_address) 0); | |
192 | ||
193 | acpi_target_sleep_state = ACPI_STATE_S0; | |
c10d7a13 DD |
194 | |
195 | /* If we were woken with the fixed power button, provide a small | |
196 | * hint to userspace in the form of a wakeup event on the fixed power | |
197 | * button device (if it can be found). | |
198 | * | |
199 | * We delay the event generation til now, as the PM layer requires | |
200 | * timekeeping to be running before we generate events. */ | |
201 | if (!pwr_btn_event_pending) | |
202 | return; | |
203 | ||
204 | pwr_btn_event_pending = false; | |
205 | pwr_btn_dev = bus_find_device(&acpi_bus_type, NULL, NULL, | |
206 | find_powerf_dev); | |
207 | if (pwr_btn_dev) { | |
208 | pm_wakeup_event(pwr_btn_dev, 0); | |
209 | put_device(pwr_btn_dev); | |
210 | } | |
d8f3de0d RW |
211 | } |
212 | ||
213 | /** | |
214 | * acpi_pm_end - Finish up suspend sequence. | |
215 | */ | |
216 | static void acpi_pm_end(void) | |
217 | { | |
218 | /* | |
219 | * This is necessary in case acpi_pm_finish() is not called during a | |
220 | * failing transition to a sleep state. | |
221 | */ | |
222 | acpi_target_sleep_state = ACPI_STATE_S0; | |
e49f711c | 223 | acpi_sleep_tts_switch(acpi_target_sleep_state); |
d8f3de0d | 224 | } |
92daa7b5 RW |
225 | #else /* !CONFIG_ACPI_SLEEP */ |
226 | #define acpi_target_sleep_state ACPI_STATE_S0 | |
5d1e072b | 227 | #endif /* CONFIG_ACPI_SLEEP */ |
1da177e4 | 228 | |
d8f3de0d | 229 | #ifdef CONFIG_SUSPEND |
1da177e4 | 230 | static u32 acpi_suspend_states[] = { |
e2a5b420 AS |
231 | [PM_SUSPEND_ON] = ACPI_STATE_S0, |
232 | [PM_SUSPEND_STANDBY] = ACPI_STATE_S1, | |
233 | [PM_SUSPEND_MEM] = ACPI_STATE_S3, | |
e2a5b420 | 234 | [PM_SUSPEND_MAX] = ACPI_STATE_S5 |
1da177e4 LT |
235 | }; |
236 | ||
e9b3aba8 | 237 | /** |
2c6e33c3 | 238 | * acpi_suspend_begin - Set the target system sleep state to the state |
e9b3aba8 RW |
239 | * associated with given @pm_state, if supported. |
240 | */ | |
2c6e33c3 | 241 | static int acpi_suspend_begin(suspend_state_t pm_state) |
e9b3aba8 RW |
242 | { |
243 | u32 acpi_state = acpi_suspend_states[pm_state]; | |
244 | int error = 0; | |
245 | ||
72ad5d77 | 246 | error = nvs_nosave ? 0 : suspend_nvs_alloc(); |
2a6b6976 MG |
247 | if (error) |
248 | return error; | |
249 | ||
e9b3aba8 RW |
250 | if (sleep_states[acpi_state]) { |
251 | acpi_target_sleep_state = acpi_state; | |
e49f711c | 252 | acpi_sleep_tts_switch(acpi_target_sleep_state); |
e9b3aba8 RW |
253 | } else { |
254 | printk(KERN_ERR "ACPI does not support this state: %d\n", | |
255 | pm_state); | |
256 | error = -ENOSYS; | |
257 | } | |
258 | return error; | |
259 | } | |
260 | ||
1da177e4 | 261 | /** |
2c6e33c3 | 262 | * acpi_suspend_enter - Actually enter a sleep state. |
e9b3aba8 | 263 | * @pm_state: ignored |
1da177e4 | 264 | * |
50ad147a RW |
265 | * Flush caches and go to sleep. For STR we have to call arch-specific |
266 | * assembly, which in turn call acpi_enter_sleep_state(). | |
1da177e4 LT |
267 | * It's unfortunate, but it works. Please fix if you're feeling frisky. |
268 | */ | |
2c6e33c3 | 269 | static int acpi_suspend_enter(suspend_state_t pm_state) |
1da177e4 LT |
270 | { |
271 | acpi_status status = AE_OK; | |
e9b3aba8 | 272 | u32 acpi_state = acpi_target_sleep_state; |
979f11b0 | 273 | int error; |
1da177e4 LT |
274 | |
275 | ACPI_FLUSH_CPU_CACHE(); | |
276 | ||
e9b3aba8 RW |
277 | switch (acpi_state) { |
278 | case ACPI_STATE_S1: | |
1da177e4 | 279 | barrier(); |
3f6f49c7 | 280 | status = acpi_enter_sleep_state(acpi_state); |
1da177e4 LT |
281 | break; |
282 | ||
e9b3aba8 | 283 | case ACPI_STATE_S3: |
f1a2003e | 284 | error = acpi_suspend_lowlevel(); |
979f11b0 RW |
285 | if (error) |
286 | return error; | |
7a63f08b | 287 | pr_info(PREFIX "Low-level resume complete\n"); |
1da177e4 | 288 | break; |
1da177e4 | 289 | } |
872d83d0 | 290 | |
b6dacf63 MG |
291 | /* This violates the spec but is required for bug compatibility. */ |
292 | acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1); | |
65df7847 | 293 | |
3f6f49c7 LB |
294 | /* Reprogram control registers */ |
295 | acpi_leave_sleep_state_prep(acpi_state); | |
c95d47a8 | 296 | |
23b168d4 | 297 | /* ACPI 3.0 specs (P62) says that it's the responsibility |
872d83d0 AP |
298 | * of the OSPM to clear the status bit [ implying that the |
299 | * POWER_BUTTON event should not reach userspace ] | |
c10d7a13 DD |
300 | * |
301 | * However, we do generate a small hint for userspace in the form of | |
302 | * a wakeup event. We flag this condition for now and generate the | |
303 | * event later, as we're currently too early in resume to be able to | |
304 | * generate wakeup events. | |
872d83d0 | 305 | */ |
c10d7a13 DD |
306 | if (ACPI_SUCCESS(status) && (acpi_state == ACPI_STATE_S3)) { |
307 | acpi_event_status pwr_btn_status; | |
308 | ||
309 | acpi_get_event_status(ACPI_EVENT_POWER_BUTTON, &pwr_btn_status); | |
310 | ||
311 | if (pwr_btn_status & ACPI_EVENT_FLAG_SET) { | |
312 | acpi_clear_event(ACPI_EVENT_POWER_BUTTON); | |
313 | /* Flag for later */ | |
314 | pwr_btn_event_pending = true; | |
315 | } | |
316 | } | |
872d83d0 | 317 | |
a3627f67 SL |
318 | /* |
319 | * Disable and clear GPE status before interrupt is enabled. Some GPEs | |
320 | * (like wakeup GPE) haven't handler, this can avoid such GPE misfire. | |
321 | * acpi_leave_sleep_state will reenable specific GPEs later | |
322 | */ | |
3d97e426 | 323 | acpi_disable_all_gpes(); |
d5a64513 | 324 | /* Allow EC transactions to happen. */ |
fe955682 | 325 | acpi_ec_unblock_transactions_early(); |
a3627f67 | 326 | |
2a6b6976 MG |
327 | suspend_nvs_restore(); |
328 | ||
1da177e4 LT |
329 | return ACPI_SUCCESS(status) ? 0 : -EFAULT; |
330 | } | |
331 | ||
2c6e33c3 | 332 | static int acpi_suspend_state_valid(suspend_state_t pm_state) |
eb9289eb | 333 | { |
e8c9c502 | 334 | u32 acpi_state; |
eb9289eb | 335 | |
e8c9c502 JB |
336 | switch (pm_state) { |
337 | case PM_SUSPEND_ON: | |
338 | case PM_SUSPEND_STANDBY: | |
339 | case PM_SUSPEND_MEM: | |
340 | acpi_state = acpi_suspend_states[pm_state]; | |
341 | ||
342 | return sleep_states[acpi_state]; | |
343 | default: | |
344 | return 0; | |
345 | } | |
eb9289eb SL |
346 | } |
347 | ||
2f55ac07 | 348 | static const struct platform_suspend_ops acpi_suspend_ops = { |
2c6e33c3 LB |
349 | .valid = acpi_suspend_state_valid, |
350 | .begin = acpi_suspend_begin, | |
6a7c7eaf | 351 | .prepare_late = acpi_pm_prepare, |
2c6e33c3 | 352 | .enter = acpi_suspend_enter, |
618d7fd0 | 353 | .wake = acpi_pm_finish, |
d8f3de0d RW |
354 | .end = acpi_pm_end, |
355 | }; | |
356 | ||
357 | /** | |
358 | * acpi_suspend_begin_old - Set the target system sleep state to the | |
359 | * state associated with given @pm_state, if supported, and | |
360 | * execute the _PTS control method. This function is used if the | |
361 | * pre-ACPI 2.0 suspend ordering has been requested. | |
362 | */ | |
363 | static int acpi_suspend_begin_old(suspend_state_t pm_state) | |
364 | { | |
365 | int error = acpi_suspend_begin(pm_state); | |
d8f3de0d RW |
366 | if (!error) |
367 | error = __acpi_pm_prepare(); | |
c5f7a1bb | 368 | |
d8f3de0d RW |
369 | return error; |
370 | } | |
371 | ||
372 | /* | |
373 | * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has | |
374 | * been requested. | |
375 | */ | |
2f55ac07 | 376 | static const struct platform_suspend_ops acpi_suspend_ops_old = { |
d8f3de0d RW |
377 | .valid = acpi_suspend_state_valid, |
378 | .begin = acpi_suspend_begin_old, | |
c5f7a1bb | 379 | .prepare_late = acpi_pm_pre_suspend, |
2c6e33c3 | 380 | .enter = acpi_suspend_enter, |
618d7fd0 | 381 | .wake = acpi_pm_finish, |
d8f3de0d RW |
382 | .end = acpi_pm_end, |
383 | .recover = acpi_pm_finish, | |
1da177e4 | 384 | }; |
e41fb7c5 CC |
385 | |
386 | static int __init init_old_suspend_ordering(const struct dmi_system_id *d) | |
387 | { | |
388 | old_suspend_ordering = true; | |
389 | return 0; | |
390 | } | |
391 | ||
53998648 RW |
392 | static int __init init_nvs_nosave(const struct dmi_system_id *d) |
393 | { | |
394 | acpi_nvs_nosave(); | |
395 | return 0; | |
396 | } | |
397 | ||
e41fb7c5 CC |
398 | static struct dmi_system_id __initdata acpisleep_dmi_table[] = { |
399 | { | |
400 | .callback = init_old_suspend_ordering, | |
401 | .ident = "Abit KN9 (nForce4 variant)", | |
402 | .matches = { | |
403 | DMI_MATCH(DMI_BOARD_VENDOR, "http://www.abit.com.tw/"), | |
404 | DMI_MATCH(DMI_BOARD_NAME, "KN9 Series(NF-CK804)"), | |
405 | }, | |
406 | }, | |
4fb507b6 RW |
407 | { |
408 | .callback = init_old_suspend_ordering, | |
409 | .ident = "HP xw4600 Workstation", | |
410 | .matches = { | |
411 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
412 | DMI_MATCH(DMI_PRODUCT_NAME, "HP xw4600 Workstation"), | |
413 | }, | |
414 | }, | |
65df7847 | 415 | { |
a1404495 AW |
416 | .callback = init_old_suspend_ordering, |
417 | .ident = "Asus Pundit P1-AH2 (M2N8L motherboard)", | |
418 | .matches = { | |
419 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTek Computer INC."), | |
420 | DMI_MATCH(DMI_BOARD_NAME, "M2N8L"), | |
421 | }, | |
422 | }, | |
45e77988 | 423 | { |
2a9ef8e1 ZY |
424 | .callback = init_old_suspend_ordering, |
425 | .ident = "Panasonic CF51-2L", | |
426 | .matches = { | |
427 | DMI_MATCH(DMI_BOARD_VENDOR, | |
428 | "Matsushita Electric Industrial Co.,Ltd."), | |
429 | DMI_MATCH(DMI_BOARD_NAME, "CF51-2L"), | |
430 | }, | |
431 | }, | |
53998648 RW |
432 | { |
433 | .callback = init_nvs_nosave, | |
d11c78e9 DJ |
434 | .ident = "Sony Vaio VGN-FW21E", |
435 | .matches = { | |
436 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
437 | DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW21E"), | |
438 | }, | |
439 | }, | |
440 | { | |
441 | .callback = init_nvs_nosave, | |
ddf6ce45 DJ |
442 | .ident = "Sony Vaio VPCEB17FX", |
443 | .matches = { | |
444 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
445 | DMI_MATCH(DMI_PRODUCT_NAME, "VPCEB17FX"), | |
446 | }, | |
447 | }, | |
448 | { | |
449 | .callback = init_nvs_nosave, | |
53998648 RW |
450 | .ident = "Sony Vaio VGN-SR11M", |
451 | .matches = { | |
452 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
453 | DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR11M"), | |
454 | }, | |
455 | }, | |
456 | { | |
457 | .callback = init_nvs_nosave, | |
458 | .ident = "Everex StepNote Series", | |
459 | .matches = { | |
460 | DMI_MATCH(DMI_SYS_VENDOR, "Everex Systems, Inc."), | |
461 | DMI_MATCH(DMI_PRODUCT_NAME, "Everex StepNote Series"), | |
462 | }, | |
463 | }, | |
af48931c RW |
464 | { |
465 | .callback = init_nvs_nosave, | |
466 | .ident = "Sony Vaio VPCEB1Z1E", | |
467 | .matches = { | |
468 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
469 | DMI_MATCH(DMI_PRODUCT_NAME, "VPCEB1Z1E"), | |
470 | }, | |
471 | }, | |
291a73c9 RW |
472 | { |
473 | .callback = init_nvs_nosave, | |
474 | .ident = "Sony Vaio VGN-NW130D", | |
475 | .matches = { | |
476 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
477 | DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NW130D"), | |
478 | }, | |
479 | }, | |
7b330707 RW |
480 | { |
481 | .callback = init_nvs_nosave, | |
93f77084 LT |
482 | .ident = "Sony Vaio VPCCW29FX", |
483 | .matches = { | |
484 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
485 | DMI_MATCH(DMI_PRODUCT_NAME, "VPCCW29FX"), | |
486 | }, | |
487 | }, | |
488 | { | |
489 | .callback = init_nvs_nosave, | |
7b330707 RW |
490 | .ident = "Averatec AV1020-ED2", |
491 | .matches = { | |
492 | DMI_MATCH(DMI_SYS_VENDOR, "AVERATEC"), | |
493 | DMI_MATCH(DMI_PRODUCT_NAME, "1000 Series"), | |
494 | }, | |
495 | }, | |
bb0c5ed6 ZR |
496 | { |
497 | .callback = init_old_suspend_ordering, | |
498 | .ident = "Asus A8N-SLI DELUXE", | |
499 | .matches = { | |
500 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
501 | DMI_MATCH(DMI_BOARD_NAME, "A8N-SLI DELUXE"), | |
502 | }, | |
503 | }, | |
504 | { | |
505 | .callback = init_old_suspend_ordering, | |
506 | .ident = "Asus A8N-SLI Premium", | |
507 | .matches = { | |
508 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
509 | DMI_MATCH(DMI_BOARD_NAME, "A8N-SLI Premium"), | |
510 | }, | |
511 | }, | |
89e8ea12 RW |
512 | { |
513 | .callback = init_nvs_nosave, | |
514 | .ident = "Sony Vaio VGN-SR26GN_P", | |
515 | .matches = { | |
516 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
517 | DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR26GN_P"), | |
518 | }, | |
519 | }, | |
731b25a4 BR |
520 | { |
521 | .callback = init_nvs_nosave, | |
522 | .ident = "Sony Vaio VGN-FW520F", | |
523 | .matches = { | |
524 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
525 | DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW520F"), | |
526 | }, | |
527 | }, | |
5a50a7c3 KYL |
528 | { |
529 | .callback = init_nvs_nosave, | |
530 | .ident = "Asus K54C", | |
531 | .matches = { | |
532 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), | |
533 | DMI_MATCH(DMI_PRODUCT_NAME, "K54C"), | |
534 | }, | |
535 | }, | |
536 | { | |
537 | .callback = init_nvs_nosave, | |
538 | .ident = "Asus K54HR", | |
539 | .matches = { | |
540 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), | |
541 | DMI_MATCH(DMI_PRODUCT_NAME, "K54HR"), | |
542 | }, | |
543 | }, | |
e41fb7c5 CC |
544 | {}, |
545 | }; | |
296699de RW |
546 | #endif /* CONFIG_SUSPEND */ |
547 | ||
b0cb1a19 | 548 | #ifdef CONFIG_HIBERNATION |
bdfe6b7c SL |
549 | static unsigned long s4_hardware_signature; |
550 | static struct acpi_table_facs *facs; | |
551 | static bool nosigcheck; | |
552 | ||
553 | void __init acpi_no_s4_hw_signature(void) | |
554 | { | |
555 | nosigcheck = true; | |
556 | } | |
557 | ||
caea99ef | 558 | static int acpi_hibernation_begin(void) |
74f270af | 559 | { |
3f4b0ef7 RW |
560 | int error; |
561 | ||
72ad5d77 | 562 | error = nvs_nosave ? 0 : suspend_nvs_alloc(); |
3f4b0ef7 RW |
563 | if (!error) { |
564 | acpi_target_sleep_state = ACPI_STATE_S4; | |
565 | acpi_sleep_tts_switch(acpi_target_sleep_state); | |
566 | } | |
567 | ||
568 | return error; | |
569 | } | |
570 | ||
a3d25c27 RW |
571 | static int acpi_hibernation_enter(void) |
572 | { | |
573 | acpi_status status = AE_OK; | |
a3d25c27 RW |
574 | |
575 | ACPI_FLUSH_CPU_CACHE(); | |
576 | ||
a3d25c27 | 577 | /* This shouldn't return. If it returns, we have a problem */ |
3f6f49c7 LB |
578 | status = acpi_enter_sleep_state(ACPI_STATE_S4); |
579 | /* Reprogram control registers */ | |
580 | acpi_leave_sleep_state_prep(ACPI_STATE_S4); | |
a3d25c27 RW |
581 | |
582 | return ACPI_SUCCESS(status) ? 0 : -EFAULT; | |
583 | } | |
584 | ||
c7e0831d RW |
585 | static void acpi_hibernation_leave(void) |
586 | { | |
587 | /* | |
588 | * If ACPI is not enabled by the BIOS and the boot kernel, we need to | |
589 | * enable it here. | |
590 | */ | |
591 | acpi_enable(); | |
3f6f49c7 LB |
592 | /* Reprogram control registers */ |
593 | acpi_leave_sleep_state_prep(ACPI_STATE_S4); | |
bdfe6b7c SL |
594 | /* Check the hardware signature */ |
595 | if (facs && s4_hardware_signature != facs->hardware_signature) { | |
596 | printk(KERN_EMERG "ACPI: Hardware changed while hibernated, " | |
597 | "cannot resume!\n"); | |
598 | panic("ACPI S4 hardware signature mismatch"); | |
599 | } | |
3f4b0ef7 | 600 | /* Restore the NVS memory area */ |
dd4c4f17 | 601 | suspend_nvs_restore(); |
d5a64513 | 602 | /* Allow EC transactions to happen. */ |
fe955682 | 603 | acpi_ec_unblock_transactions_early(); |
c7e0831d RW |
604 | } |
605 | ||
d5a64513 | 606 | static void acpi_pm_thaw(void) |
f6bb13aa | 607 | { |
fe955682 | 608 | acpi_ec_unblock_transactions(); |
3d97e426 | 609 | acpi_enable_all_runtime_gpes(); |
a3d25c27 RW |
610 | } |
611 | ||
073ef1f6 | 612 | static const struct platform_hibernation_ops acpi_hibernation_ops = { |
d8f3de0d RW |
613 | .begin = acpi_hibernation_begin, |
614 | .end = acpi_pm_end, | |
c5f7a1bb | 615 | .pre_snapshot = acpi_pm_prepare, |
2a6b6976 | 616 | .finish = acpi_pm_finish, |
d8f3de0d RW |
617 | .prepare = acpi_pm_prepare, |
618 | .enter = acpi_hibernation_enter, | |
619 | .leave = acpi_hibernation_leave, | |
d5a64513 RW |
620 | .pre_restore = acpi_pm_freeze, |
621 | .restore_cleanup = acpi_pm_thaw, | |
d8f3de0d | 622 | }; |
caea99ef | 623 | |
d8f3de0d RW |
624 | /** |
625 | * acpi_hibernation_begin_old - Set the target system sleep state to | |
626 | * ACPI_STATE_S4 and execute the _PTS control method. This | |
627 | * function is used if the pre-ACPI 2.0 suspend ordering has been | |
628 | * requested. | |
629 | */ | |
630 | static int acpi_hibernation_begin_old(void) | |
a634cc10 | 631 | { |
e49f711c ZY |
632 | int error; |
633 | /* | |
634 | * The _TTS object should always be evaluated before the _PTS object. | |
635 | * When the old_suspended_ordering is true, the _PTS object is | |
636 | * evaluated in the acpi_sleep_prepare. | |
637 | */ | |
638 | acpi_sleep_tts_switch(ACPI_STATE_S4); | |
639 | ||
640 | error = acpi_sleep_prepare(ACPI_STATE_S4); | |
a634cc10 | 641 | |
3f4b0ef7 | 642 | if (!error) { |
72ad5d77 | 643 | if (!nvs_nosave) |
dd4c4f17 | 644 | error = suspend_nvs_alloc(); |
3f4b0ef7 RW |
645 | if (!error) |
646 | acpi_target_sleep_state = ACPI_STATE_S4; | |
647 | } | |
648 | return error; | |
649 | } | |
650 | ||
d8f3de0d RW |
651 | /* |
652 | * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has | |
653 | * been requested. | |
654 | */ | |
073ef1f6 | 655 | static const struct platform_hibernation_ops acpi_hibernation_ops_old = { |
d8f3de0d RW |
656 | .begin = acpi_hibernation_begin_old, |
657 | .end = acpi_pm_end, | |
c5f7a1bb | 658 | .pre_snapshot = acpi_pm_pre_suspend, |
d5a64513 | 659 | .prepare = acpi_pm_freeze, |
2a6b6976 | 660 | .finish = acpi_pm_finish, |
a3d25c27 | 661 | .enter = acpi_hibernation_enter, |
c7e0831d | 662 | .leave = acpi_hibernation_leave, |
d5a64513 RW |
663 | .pre_restore = acpi_pm_freeze, |
664 | .restore_cleanup = acpi_pm_thaw, | |
d8f3de0d | 665 | .recover = acpi_pm_finish, |
a3d25c27 | 666 | }; |
d8f3de0d | 667 | #endif /* CONFIG_HIBERNATION */ |
a3d25c27 | 668 | |
296699de RW |
669 | int acpi_suspend(u32 acpi_state) |
670 | { | |
671 | suspend_state_t states[] = { | |
672 | [1] = PM_SUSPEND_STANDBY, | |
673 | [3] = PM_SUSPEND_MEM, | |
674 | [5] = PM_SUSPEND_MAX | |
675 | }; | |
676 | ||
677 | if (acpi_state < 6 && states[acpi_state]) | |
678 | return pm_suspend(states[acpi_state]); | |
679 | if (acpi_state == 4) | |
680 | return hibernate(); | |
681 | return -EINVAL; | |
682 | } | |
683 | ||
aa338601 | 684 | #ifdef CONFIG_PM |
fd4aff1a SL |
685 | /** |
686 | * acpi_pm_device_sleep_state - return preferred power state of ACPI device | |
687 | * in the system sleep state given by %acpi_target_sleep_state | |
2fe2de5f DB |
688 | * @dev: device to examine; its driver model wakeup flags control |
689 | * whether it should be able to wake up the system | |
fd4aff1a | 690 | * @d_min_p: used to store the upper limit of allowed states range |
ee85f543 HY |
691 | * @d_max_in: specify the lowest allowed states |
692 | * Return value: preferred power state of the device on success, -ENODEV | |
693 | * (ie. if there's no 'struct acpi_device' for @dev) or -EINVAL on failure | |
fd4aff1a SL |
694 | * |
695 | * Find the lowest power (highest number) ACPI device power state that | |
696 | * device @dev can be in while the system is in the sleep state represented | |
697 | * by %acpi_target_sleep_state. If @wake is nonzero, the device should be | |
698 | * able to wake up the system from this sleep state. If @d_min_p is set, | |
699 | * the highest power (lowest number) device power state of @dev allowed | |
700 | * in this system sleep state is stored at the location pointed to by it. | |
701 | * | |
702 | * The caller must ensure that @dev is valid before using this function. | |
703 | * The caller is also responsible for figuring out if the device is | |
704 | * supposed to be able to wake up the system and passing this information | |
705 | * via @wake. | |
706 | */ | |
707 | ||
ee85f543 | 708 | int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p, int d_max_in) |
fd4aff1a SL |
709 | { |
710 | acpi_handle handle = DEVICE_ACPI_HANDLE(dev); | |
711 | struct acpi_device *adev; | |
712 | char acpi_method[] = "_SxD"; | |
27663c58 | 713 | unsigned long long d_min, d_max; |
fd4aff1a | 714 | |
ee85f543 HY |
715 | if (d_max_in < ACPI_STATE_D0 || d_max_in > ACPI_STATE_D3) |
716 | return -EINVAL; | |
fd4aff1a | 717 | if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) { |
ead77594 | 718 | printk(KERN_DEBUG "ACPI handle has no context!\n"); |
fd4aff1a SL |
719 | return -ENODEV; |
720 | } | |
721 | ||
722 | acpi_method[2] = '0' + acpi_target_sleep_state; | |
723 | /* | |
ee85f543 HY |
724 | * If the sleep state is S0, the lowest limit from ACPI is D3, |
725 | * but if the device has _S0W, we will use the value from _S0W | |
726 | * as the lowest limit from ACPI. Finally, we will constrain | |
727 | * the lowest limit with the specified one. | |
fd4aff1a SL |
728 | */ |
729 | d_min = ACPI_STATE_D0; | |
730 | d_max = ACPI_STATE_D3; | |
731 | ||
732 | /* | |
733 | * If present, _SxD methods return the minimum D-state (highest power | |
734 | * state) we can use for the corresponding S-states. Otherwise, the | |
735 | * minimum D-state is D0 (ACPI 3.x). | |
736 | * | |
737 | * NOTE: We rely on acpi_evaluate_integer() not clobbering the integer | |
738 | * provided -- that's our fault recovery, we ignore retval. | |
739 | */ | |
740 | if (acpi_target_sleep_state > ACPI_STATE_S0) | |
741 | acpi_evaluate_integer(handle, acpi_method, NULL, &d_min); | |
742 | ||
743 | /* | |
744 | * If _PRW says we can wake up the system from the target sleep state, | |
745 | * the D-state returned by _SxD is sufficient for that (we assume a | |
746 | * wakeup-aware driver if wake is set). Still, if _SxW exists | |
747 | * (ACPI 3.x), it should return the maximum (lowest power) D-state that | |
748 | * can wake the system. _S0W may be valid, too. | |
749 | */ | |
750 | if (acpi_target_sleep_state == ACPI_STATE_S0 || | |
dbe9a2ed RW |
751 | (device_may_wakeup(dev) && adev->wakeup.flags.valid && |
752 | adev->wakeup.sleep_state >= acpi_target_sleep_state)) { | |
ad3399c3 RW |
753 | acpi_status status; |
754 | ||
fd4aff1a | 755 | acpi_method[3] = 'W'; |
ad3399c3 RW |
756 | status = acpi_evaluate_integer(handle, acpi_method, NULL, |
757 | &d_max); | |
758 | if (ACPI_FAILURE(status)) { | |
761afb86 RW |
759 | if (acpi_target_sleep_state != ACPI_STATE_S0 || |
760 | status != AE_NOT_FOUND) | |
761 | d_max = d_min; | |
ad3399c3 RW |
762 | } else if (d_max < d_min) { |
763 | /* Warn the user of the broken DSDT */ | |
764 | printk(KERN_WARNING "ACPI: Wrong value from %s\n", | |
765 | acpi_method); | |
766 | /* Sanitize it */ | |
fd4aff1a | 767 | d_min = d_max; |
ad3399c3 | 768 | } |
fd4aff1a SL |
769 | } |
770 | ||
ee85f543 HY |
771 | if (d_max_in < d_min) |
772 | return -EINVAL; | |
fd4aff1a SL |
773 | if (d_min_p) |
774 | *d_min_p = d_min; | |
ee85f543 HY |
775 | /* constrain d_max with specified lowest limit (max number) */ |
776 | if (d_max > d_max_in) { | |
777 | for (d_max = d_max_in; d_max > d_min; d_max--) { | |
778 | if (adev->power.states[d_max].flags.valid) | |
779 | break; | |
780 | } | |
781 | } | |
fd4aff1a SL |
782 | return d_max; |
783 | } | |
3bd46600 | 784 | EXPORT_SYMBOL(acpi_pm_device_sleep_state); |
aa338601 | 785 | #endif /* CONFIG_PM */ |
eb9d0fe4 | 786 | |
761afb86 | 787 | #ifdef CONFIG_PM_SLEEP |
b24e5098 LM |
788 | /** |
789 | * acpi_pm_device_run_wake - Enable/disable wake-up for given device. | |
790 | * @phys_dev: Device to enable/disable the platform to wake-up the system for. | |
791 | * @enable: Whether enable or disable the wake-up functionality. | |
792 | * | |
793 | * Find the ACPI device object corresponding to @pci_dev and try to | |
794 | * enable/disable the GPE associated with it. | |
795 | */ | |
796 | int acpi_pm_device_run_wake(struct device *phys_dev, bool enable) | |
797 | { | |
798 | struct acpi_device *dev; | |
799 | acpi_handle handle; | |
800 | ||
801 | if (!device_run_wake(phys_dev)) | |
802 | return -EINVAL; | |
803 | ||
804 | handle = DEVICE_ACPI_HANDLE(phys_dev); | |
805 | if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &dev))) { | |
806 | dev_dbg(phys_dev, "ACPI handle has no context in %s!\n", | |
807 | __func__); | |
808 | return -ENODEV; | |
809 | } | |
810 | ||
811 | if (enable) { | |
812 | acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0); | |
813 | acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number); | |
814 | } else { | |
815 | acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number); | |
816 | acpi_disable_wakeup_device_power(dev); | |
817 | } | |
818 | ||
819 | return 0; | |
820 | } | |
3bd46600 | 821 | EXPORT_SYMBOL(acpi_pm_device_run_wake); |
b24e5098 | 822 | |
eb9d0fe4 RW |
823 | /** |
824 | * acpi_pm_device_sleep_wake - enable or disable the system wake-up | |
825 | * capability of given device | |
826 | * @dev: device to handle | |
827 | * @enable: 'true' - enable, 'false' - disable the wake-up capability | |
828 | */ | |
829 | int acpi_pm_device_sleep_wake(struct device *dev, bool enable) | |
830 | { | |
831 | acpi_handle handle; | |
832 | struct acpi_device *adev; | |
df8db91f | 833 | int error; |
eb9d0fe4 | 834 | |
0baed8da | 835 | if (!device_can_wakeup(dev)) |
eb9d0fe4 RW |
836 | return -EINVAL; |
837 | ||
838 | handle = DEVICE_ACPI_HANDLE(dev); | |
839 | if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) { | |
df8db91f | 840 | dev_dbg(dev, "ACPI handle has no context in %s!\n", __func__); |
eb9d0fe4 RW |
841 | return -ENODEV; |
842 | } | |
843 | ||
e8b6f970 RW |
844 | error = enable ? |
845 | acpi_enable_wakeup_device_power(adev, acpi_target_sleep_state) : | |
846 | acpi_disable_wakeup_device_power(adev); | |
df8db91f RW |
847 | if (!error) |
848 | dev_info(dev, "wake-up capability %s by ACPI\n", | |
849 | enable ? "enabled" : "disabled"); | |
850 | ||
851 | return error; | |
eb9d0fe4 | 852 | } |
761afb86 | 853 | #endif /* CONFIG_PM_SLEEP */ |
fd4aff1a | 854 | |
f216cc37 AS |
855 | static void acpi_power_off_prepare(void) |
856 | { | |
857 | /* Prepare to power off the system */ | |
858 | acpi_sleep_prepare(ACPI_STATE_S5); | |
3d97e426 | 859 | acpi_disable_all_gpes(); |
f216cc37 AS |
860 | } |
861 | ||
862 | static void acpi_power_off(void) | |
863 | { | |
864 | /* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */ | |
4d939155 | 865 | printk(KERN_DEBUG "%s called\n", __func__); |
f216cc37 | 866 | local_irq_disable(); |
3f6f49c7 | 867 | acpi_enter_sleep_state(ACPI_STATE_S5); |
96f15efc LB |
868 | } |
869 | ||
aafbcd16 | 870 | int __init acpi_sleep_init(void) |
1da177e4 | 871 | { |
296699de RW |
872 | acpi_status status; |
873 | u8 type_a, type_b; | |
874 | #ifdef CONFIG_SUSPEND | |
e2a5b420 | 875 | int i = 0; |
e41fb7c5 CC |
876 | |
877 | dmi_check_system(acpisleep_dmi_table); | |
296699de | 878 | #endif |
1da177e4 LT |
879 | |
880 | if (acpi_disabled) | |
881 | return 0; | |
882 | ||
5a50fe70 FP |
883 | sleep_states[ACPI_STATE_S0] = 1; |
884 | printk(KERN_INFO PREFIX "(supports S0"); | |
885 | ||
296699de | 886 | #ifdef CONFIG_SUSPEND |
5a50fe70 | 887 | for (i = ACPI_STATE_S1; i < ACPI_STATE_S4; i++) { |
1da177e4 LT |
888 | status = acpi_get_sleep_type_data(i, &type_a, &type_b); |
889 | if (ACPI_SUCCESS(status)) { | |
890 | sleep_states[i] = 1; | |
be96447e | 891 | printk(KERN_CONT " S%d", i); |
1da177e4 | 892 | } |
1da177e4 | 893 | } |
1da177e4 | 894 | |
d8f3de0d RW |
895 | suspend_set_ops(old_suspend_ordering ? |
896 | &acpi_suspend_ops_old : &acpi_suspend_ops); | |
296699de | 897 | #endif |
a3d25c27 | 898 | |
b0cb1a19 | 899 | #ifdef CONFIG_HIBERNATION |
296699de RW |
900 | status = acpi_get_sleep_type_data(ACPI_STATE_S4, &type_a, &type_b); |
901 | if (ACPI_SUCCESS(status)) { | |
d8f3de0d RW |
902 | hibernation_set_ops(old_suspend_ordering ? |
903 | &acpi_hibernation_ops_old : &acpi_hibernation_ops); | |
296699de | 904 | sleep_states[ACPI_STATE_S4] = 1; |
be96447e | 905 | printk(KERN_CONT " S4"); |
bdfe6b7c | 906 | if (!nosigcheck) { |
3d97e426 | 907 | acpi_get_table(ACPI_SIG_FACS, 1, |
bdfe6b7c SL |
908 | (struct acpi_table_header **)&facs); |
909 | if (facs) | |
910 | s4_hardware_signature = | |
911 | facs->hardware_signature; | |
912 | } | |
296699de | 913 | } |
a3d25c27 | 914 | #endif |
f216cc37 AS |
915 | status = acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b); |
916 | if (ACPI_SUCCESS(status)) { | |
917 | sleep_states[ACPI_STATE_S5] = 1; | |
be96447e | 918 | printk(KERN_CONT " S5"); |
f216cc37 AS |
919 | pm_power_off_prepare = acpi_power_off_prepare; |
920 | pm_power_off = acpi_power_off; | |
921 | } | |
be96447e | 922 | printk(KERN_CONT ")\n"); |
e49f711c ZY |
923 | /* |
924 | * Register the tts_notifier to reboot notifier list so that the _TTS | |
925 | * object can also be evaluated when the system enters S5. | |
926 | */ | |
927 | register_reboot_notifier(&tts_notifier); | |
1da177e4 LT |
928 | return 0; |
929 | } |