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authorLen Brown <len.brown@intel.com>2009-01-09 00:13:17 -0500
committerLen Brown <len.brown@intel.com>2009-01-09 03:30:47 -0500
commit95b482a8d31116f3f5c2a5089569393234d06385 (patch)
treef32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/sleep
parent6620e0c49f577454b772fb381543d60ae53eb885 (diff)
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/sleep')
-rw-r--r--drivers/acpi/sleep/Makefile5
-rw-r--r--drivers/acpi/sleep/main.c696
-rw-r--r--drivers/acpi/sleep/proc.c520
-rw-r--r--drivers/acpi/sleep/sleep.h7
-rw-r--r--drivers/acpi/sleep/wakeup.c167
5 files changed, 0 insertions, 1395 deletions
diff --git a/drivers/acpi/sleep/Makefile b/drivers/acpi/sleep/Makefile
deleted file mode 100644
index f1fb888c2d29..000000000000
--- a/drivers/acpi/sleep/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
1obj-y := wakeup.o
2obj-y += main.o
3obj-$(CONFIG_ACPI_SLEEP) += proc.o
4
5EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
deleted file mode 100644
index d8242772de92..000000000000
--- a/drivers/acpi/sleep/main.c
+++ /dev/null
@@ -1,696 +0,0 @@
1/*
2 * sleep.c - ACPI sleep support.
3 *
4 * Copyright (c) 2005 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
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>
18#include <linux/reboot.h>
19
20#include <asm/io.h>
21
22#include <acpi/acpi_bus.h>
23#include <acpi/acpi_drivers.h>
24#include "sleep.h"
25
26u8 sleep_states[ACPI_S_STATE_COUNT];
27
28static void acpi_sleep_tts_switch(u32 acpi_state)
29{
30 union acpi_object in_arg = { ACPI_TYPE_INTEGER };
31 struct acpi_object_list arg_list = { 1, &in_arg };
32 acpi_status status = AE_OK;
33
34 in_arg.integer.value = acpi_state;
35 status = acpi_evaluate_object(NULL, "\\_TTS", &arg_list, NULL);
36 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
37 /*
38 * OS can't evaluate the _TTS object correctly. Some warning
39 * message will be printed. But it won't break anything.
40 */
41 printk(KERN_NOTICE "Failure in evaluating _TTS object\n");
42 }
43}
44
45static int tts_notify_reboot(struct notifier_block *this,
46 unsigned long code, void *x)
47{
48 acpi_sleep_tts_switch(ACPI_STATE_S5);
49 return NOTIFY_DONE;
50}
51
52static struct notifier_block tts_notifier = {
53 .notifier_call = tts_notify_reboot,
54 .next = NULL,
55 .priority = 0,
56};
57
58static int acpi_sleep_prepare(u32 acpi_state)
59{
60#ifdef CONFIG_ACPI_SLEEP
61 /* do we have a wakeup address for S2 and S3? */
62 if (acpi_state == ACPI_STATE_S3) {
63 if (!acpi_wakeup_address) {
64 return -EFAULT;
65 }
66 acpi_set_firmware_waking_vector(
67 (acpi_physical_address)acpi_wakeup_address);
68
69 }
70 ACPI_FLUSH_CPU_CACHE();
71 acpi_enable_wakeup_device_prep(acpi_state);
72#endif
73 printk(KERN_INFO PREFIX "Preparing to enter system sleep state S%d\n",
74 acpi_state);
75 acpi_enter_sleep_state_prep(acpi_state);
76 return 0;
77}
78
79#ifdef CONFIG_ACPI_SLEEP
80static u32 acpi_target_sleep_state = ACPI_STATE_S0;
81/*
82 * ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the
83 * user to request that behavior by using the 'acpi_old_suspend_ordering'
84 * kernel command line option that causes the following variable to be set.
85 */
86static bool old_suspend_ordering;
87
88void __init acpi_old_suspend_ordering(void)
89{
90 old_suspend_ordering = true;
91}
92
93/*
94 * According to the ACPI specification the BIOS should make sure that ACPI is
95 * enabled and SCI_EN bit is set on wake-up from S1 - S3 sleep states. Still,
96 * some BIOSes don't do that and therefore we use acpi_enable() to enable ACPI
97 * on such systems during resume. Unfortunately that doesn't help in
98 * particularly pathological cases in which SCI_EN has to be set directly on
99 * resume, although the specification states very clearly that this flag is
100 * owned by the hardware. The set_sci_en_on_resume variable will be set in such
101 * cases.
102 */
103static bool set_sci_en_on_resume;
104
105/**
106 * acpi_pm_disable_gpes - Disable the GPEs.
107 */
108static int acpi_pm_disable_gpes(void)
109{
110 acpi_disable_all_gpes();
111 return 0;
112}
113
114/**
115 * __acpi_pm_prepare - Prepare the platform to enter the target state.
116 *
117 * If necessary, set the firmware waking vector and do arch-specific
118 * nastiness to get the wakeup code to the waking vector.
119 */
120static int __acpi_pm_prepare(void)
121{
122 int error = acpi_sleep_prepare(acpi_target_sleep_state);
123
124 if (error)
125 acpi_target_sleep_state = ACPI_STATE_S0;
126 return error;
127}
128
129/**
130 * acpi_pm_prepare - Prepare the platform to enter the target sleep
131 * state and disable the GPEs.
132 */
133static int acpi_pm_prepare(void)
134{
135 int error = __acpi_pm_prepare();
136
137 if (!error)
138 acpi_disable_all_gpes();
139 return error;
140}
141
142/**
143 * acpi_pm_finish - Instruct the platform to leave a sleep state.
144 *
145 * This is called after we wake back up (or if entering the sleep state
146 * failed).
147 */
148static void acpi_pm_finish(void)
149{
150 u32 acpi_state = acpi_target_sleep_state;
151
152 if (acpi_state == ACPI_STATE_S0)
153 return;
154
155 printk(KERN_INFO PREFIX "Waking up from system sleep state S%d\n",
156 acpi_state);
157 acpi_disable_wakeup_device(acpi_state);
158 acpi_leave_sleep_state(acpi_state);
159
160 /* reset firmware waking vector */
161 acpi_set_firmware_waking_vector((acpi_physical_address) 0);
162
163 acpi_target_sleep_state = ACPI_STATE_S0;
164}
165
166/**
167 * acpi_pm_end - Finish up suspend sequence.
168 */
169static void acpi_pm_end(void)
170{
171 /*
172 * This is necessary in case acpi_pm_finish() is not called during a
173 * failing transition to a sleep state.
174 */
175 acpi_target_sleep_state = ACPI_STATE_S0;
176 acpi_sleep_tts_switch(acpi_target_sleep_state);
177}
178#else /* !CONFIG_ACPI_SLEEP */
179#define acpi_target_sleep_state ACPI_STATE_S0
180#endif /* CONFIG_ACPI_SLEEP */
181
182#ifdef CONFIG_SUSPEND
183extern void do_suspend_lowlevel(void);
184
185static u32 acpi_suspend_states[] = {
186 [PM_SUSPEND_ON] = ACPI_STATE_S0,
187 [PM_SUSPEND_STANDBY] = ACPI_STATE_S1,
188 [PM_SUSPEND_MEM] = ACPI_STATE_S3,
189 [PM_SUSPEND_MAX] = ACPI_STATE_S5
190};
191
192/**
193 * acpi_suspend_begin - Set the target system sleep state to the state
194 * associated with given @pm_state, if supported.
195 */
196static int acpi_suspend_begin(suspend_state_t pm_state)
197{
198 u32 acpi_state = acpi_suspend_states[pm_state];
199 int error = 0;
200
201 if (sleep_states[acpi_state]) {
202 acpi_target_sleep_state = acpi_state;
203 acpi_sleep_tts_switch(acpi_target_sleep_state);
204 } else {
205 printk(KERN_ERR "ACPI does not support this state: %d\n",
206 pm_state);
207 error = -ENOSYS;
208 }
209 return error;
210}
211
212/**
213 * acpi_suspend_enter - Actually enter a sleep state.
214 * @pm_state: ignored
215 *
216 * Flush caches and go to sleep. For STR we have to call arch-specific
217 * assembly, which in turn call acpi_enter_sleep_state().
218 * It's unfortunate, but it works. Please fix if you're feeling frisky.
219 */
220static int acpi_suspend_enter(suspend_state_t pm_state)
221{
222 acpi_status status = AE_OK;
223 unsigned long flags = 0;
224 u32 acpi_state = acpi_target_sleep_state;
225
226 ACPI_FLUSH_CPU_CACHE();
227
228 /* Do arch specific saving of state. */
229 if (acpi_state == ACPI_STATE_S3) {
230 int error = acpi_save_state_mem();
231
232 if (error)
233 return error;
234 }
235
236 local_irq_save(flags);
237 acpi_enable_wakeup_device(acpi_state);
238 switch (acpi_state) {
239 case ACPI_STATE_S1:
240 barrier();
241 status = acpi_enter_sleep_state(acpi_state);
242 break;
243
244 case ACPI_STATE_S3:
245 do_suspend_lowlevel();
246 break;
247 }
248
249 /* If ACPI is not enabled by the BIOS, we need to enable it here. */
250 if (set_sci_en_on_resume)
251 acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1);
252 else
253 acpi_enable();
254
255 /* Reprogram control registers and execute _BFS */
256 acpi_leave_sleep_state_prep(acpi_state);
257
258 /* ACPI 3.0 specs (P62) says that it's the responsibility
259 * of the OSPM to clear the status bit [ implying that the
260 * POWER_BUTTON event should not reach userspace ]
261 */
262 if (ACPI_SUCCESS(status) && (acpi_state == ACPI_STATE_S3))
263 acpi_clear_event(ACPI_EVENT_POWER_BUTTON);
264
265 /*
266 * Disable and clear GPE status before interrupt is enabled. Some GPEs
267 * (like wakeup GPE) haven't handler, this can avoid such GPE misfire.
268 * acpi_leave_sleep_state will reenable specific GPEs later
269 */
270 acpi_disable_all_gpes();
271
272 local_irq_restore(flags);
273 printk(KERN_DEBUG "Back to C!\n");
274
275 /* restore processor state */
276 if (acpi_state == ACPI_STATE_S3)
277 acpi_restore_state_mem();
278
279 return ACPI_SUCCESS(status) ? 0 : -EFAULT;
280}
281
282static int acpi_suspend_state_valid(suspend_state_t pm_state)
283{
284 u32 acpi_state;
285
286 switch (pm_state) {
287 case PM_SUSPEND_ON:
288 case PM_SUSPEND_STANDBY:
289 case PM_SUSPEND_MEM:
290 acpi_state = acpi_suspend_states[pm_state];
291
292 return sleep_states[acpi_state];
293 default:
294 return 0;
295 }
296}
297
298static struct platform_suspend_ops acpi_suspend_ops = {
299 .valid = acpi_suspend_state_valid,
300 .begin = acpi_suspend_begin,
301 .prepare = acpi_pm_prepare,
302 .enter = acpi_suspend_enter,
303 .finish = acpi_pm_finish,
304 .end = acpi_pm_end,
305};
306
307/**
308 * acpi_suspend_begin_old - Set the target system sleep state to the
309 * state associated with given @pm_state, if supported, and
310 * execute the _PTS control method. This function is used if the
311 * pre-ACPI 2.0 suspend ordering has been requested.
312 */
313static int acpi_suspend_begin_old(suspend_state_t pm_state)
314{
315 int error = acpi_suspend_begin(pm_state);
316
317 if (!error)
318 error = __acpi_pm_prepare();
319 return error;
320}
321
322/*
323 * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
324 * been requested.
325 */
326static struct platform_suspend_ops acpi_suspend_ops_old = {
327 .valid = acpi_suspend_state_valid,
328 .begin = acpi_suspend_begin_old,
329 .prepare = acpi_pm_disable_gpes,
330 .enter = acpi_suspend_enter,
331 .finish = acpi_pm_finish,
332 .end = acpi_pm_end,
333 .recover = acpi_pm_finish,
334};
335
336static int __init init_old_suspend_ordering(const struct dmi_system_id *d)
337{
338 old_suspend_ordering = true;
339 return 0;
340}
341
342static int __init init_set_sci_en_on_resume(const struct dmi_system_id *d)
343{
344 set_sci_en_on_resume = true;
345 return 0;
346}
347
348static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
349 {
350 .callback = init_old_suspend_ordering,
351 .ident = "Abit KN9 (nForce4 variant)",
352 .matches = {
353 DMI_MATCH(DMI_BOARD_VENDOR, "http://www.abit.com.tw/"),
354 DMI_MATCH(DMI_BOARD_NAME, "KN9 Series(NF-CK804)"),
355 },
356 },
357 {
358 .callback = init_old_suspend_ordering,
359 .ident = "HP xw4600 Workstation",
360 .matches = {
361 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
362 DMI_MATCH(DMI_PRODUCT_NAME, "HP xw4600 Workstation"),
363 },
364 },
365 {
366 .callback = init_set_sci_en_on_resume,
367 .ident = "Apple MacBook 1,1",
368 .matches = {
369 DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
370 DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
371 },
372 },
373 {
374 .callback = init_set_sci_en_on_resume,
375 .ident = "Apple MacMini 1,1",
376 .matches = {
377 DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
378 DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"),
379 },
380 },
381 {},
382};
383#endif /* CONFIG_SUSPEND */
384
385#ifdef CONFIG_HIBERNATION
386static unsigned long s4_hardware_signature;
387static struct acpi_table_facs *facs;
388static bool nosigcheck;
389
390void __init acpi_no_s4_hw_signature(void)
391{
392 nosigcheck = true;
393}
394
395static int acpi_hibernation_begin(void)
396{
397 acpi_target_sleep_state = ACPI_STATE_S4;
398 acpi_sleep_tts_switch(acpi_target_sleep_state);
399 return 0;
400}
401
402static int acpi_hibernation_enter(void)
403{
404 acpi_status status = AE_OK;
405 unsigned long flags = 0;
406
407 ACPI_FLUSH_CPU_CACHE();
408
409 local_irq_save(flags);
410 acpi_enable_wakeup_device(ACPI_STATE_S4);
411 /* This shouldn't return. If it returns, we have a problem */
412 status = acpi_enter_sleep_state(ACPI_STATE_S4);
413 /* Reprogram control registers and execute _BFS */
414 acpi_leave_sleep_state_prep(ACPI_STATE_S4);
415 local_irq_restore(flags);
416
417 return ACPI_SUCCESS(status) ? 0 : -EFAULT;
418}
419
420static void acpi_hibernation_leave(void)
421{
422 /*
423 * If ACPI is not enabled by the BIOS and the boot kernel, we need to
424 * enable it here.
425 */
426 acpi_enable();
427 /* Reprogram control registers and execute _BFS */
428 acpi_leave_sleep_state_prep(ACPI_STATE_S4);
429 /* Check the hardware signature */
430 if (facs && s4_hardware_signature != facs->hardware_signature) {
431 printk(KERN_EMERG "ACPI: Hardware changed while hibernated, "
432 "cannot resume!\n");
433 panic("ACPI S4 hardware signature mismatch");
434 }
435}
436
437static void acpi_pm_enable_gpes(void)
438{
439 acpi_enable_all_runtime_gpes();
440}
441
442static struct platform_hibernation_ops acpi_hibernation_ops = {
443 .begin = acpi_hibernation_begin,
444 .end = acpi_pm_end,
445 .pre_snapshot = acpi_pm_prepare,
446 .finish = acpi_pm_finish,
447 .prepare = acpi_pm_prepare,
448 .enter = acpi_hibernation_enter,
449 .leave = acpi_hibernation_leave,
450 .pre_restore = acpi_pm_disable_gpes,
451 .restore_cleanup = acpi_pm_enable_gpes,
452};
453
454/**
455 * acpi_hibernation_begin_old - Set the target system sleep state to
456 * ACPI_STATE_S4 and execute the _PTS control method. This
457 * function is used if the pre-ACPI 2.0 suspend ordering has been
458 * requested.
459 */
460static int acpi_hibernation_begin_old(void)
461{
462 int error;
463 /*
464 * The _TTS object should always be evaluated before the _PTS object.
465 * When the old_suspended_ordering is true, the _PTS object is
466 * evaluated in the acpi_sleep_prepare.
467 */
468 acpi_sleep_tts_switch(ACPI_STATE_S4);
469
470 error = acpi_sleep_prepare(ACPI_STATE_S4);
471
472 if (!error)
473 acpi_target_sleep_state = ACPI_STATE_S4;
474 return error;
475}
476
477/*
478 * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
479 * been requested.
480 */
481static struct platform_hibernation_ops acpi_hibernation_ops_old = {
482 .begin = acpi_hibernation_begin_old,
483 .end = acpi_pm_end,
484 .pre_snapshot = acpi_pm_disable_gpes,
485 .finish = acpi_pm_finish,
486 .prepare = acpi_pm_disable_gpes,
487 .enter = acpi_hibernation_enter,
488 .leave = acpi_hibernation_leave,
489 .pre_restore = acpi_pm_disable_gpes,
490 .restore_cleanup = acpi_pm_enable_gpes,
491 .recover = acpi_pm_finish,
492};
493#endif /* CONFIG_HIBERNATION */
494
495int acpi_suspend(u32 acpi_state)
496{
497 suspend_state_t states[] = {
498 [1] = PM_SUSPEND_STANDBY,
499 [3] = PM_SUSPEND_MEM,
500 [5] = PM_SUSPEND_MAX
501 };
502
503 if (acpi_state < 6 && states[acpi_state])
504 return pm_suspend(states[acpi_state]);
505 if (acpi_state == 4)
506 return hibernate();
507 return -EINVAL;
508}
509
510#ifdef CONFIG_PM_SLEEP
511/**
512 * acpi_pm_device_sleep_state - return preferred power state of ACPI device
513 * in the system sleep state given by %acpi_target_sleep_state
514 * @dev: device to examine; its driver model wakeup flags control
515 * whether it should be able to wake up the system
516 * @d_min_p: used to store the upper limit of allowed states range
517 * Return value: preferred power state of the device on success, -ENODEV on
518 * failure (ie. if there's no 'struct acpi_device' for @dev)
519 *
520 * Find the lowest power (highest number) ACPI device power state that
521 * device @dev can be in while the system is in the sleep state represented
522 * by %acpi_target_sleep_state. If @wake is nonzero, the device should be
523 * able to wake up the system from this sleep state. If @d_min_p is set,
524 * the highest power (lowest number) device power state of @dev allowed
525 * in this system sleep state is stored at the location pointed to by it.
526 *
527 * The caller must ensure that @dev is valid before using this function.
528 * The caller is also responsible for figuring out if the device is
529 * supposed to be able to wake up the system and passing this information
530 * via @wake.
531 */
532
533int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p)
534{
535 acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
536 struct acpi_device *adev;
537 char acpi_method[] = "_SxD";
538 unsigned long long d_min, d_max;
539
540 if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
541 printk(KERN_DEBUG "ACPI handle has no context!\n");
542 return -ENODEV;
543 }
544
545 acpi_method[2] = '0' + acpi_target_sleep_state;
546 /*
547 * If the sleep state is S0, we will return D3, but if the device has
548 * _S0W, we will use the value from _S0W
549 */
550 d_min = ACPI_STATE_D0;
551 d_max = ACPI_STATE_D3;
552
553 /*
554 * If present, _SxD methods return the minimum D-state (highest power
555 * state) we can use for the corresponding S-states. Otherwise, the
556 * minimum D-state is D0 (ACPI 3.x).
557 *
558 * NOTE: We rely on acpi_evaluate_integer() not clobbering the integer
559 * provided -- that's our fault recovery, we ignore retval.
560 */
561 if (acpi_target_sleep_state > ACPI_STATE_S0)
562 acpi_evaluate_integer(handle, acpi_method, NULL, &d_min);
563
564 /*
565 * If _PRW says we can wake up the system from the target sleep state,
566 * the D-state returned by _SxD is sufficient for that (we assume a
567 * wakeup-aware driver if wake is set). Still, if _SxW exists
568 * (ACPI 3.x), it should return the maximum (lowest power) D-state that
569 * can wake the system. _S0W may be valid, too.
570 */
571 if (acpi_target_sleep_state == ACPI_STATE_S0 ||
572 (device_may_wakeup(dev) && adev->wakeup.state.enabled &&
573 adev->wakeup.sleep_state <= acpi_target_sleep_state)) {
574 acpi_status status;
575
576 acpi_method[3] = 'W';
577 status = acpi_evaluate_integer(handle, acpi_method, NULL,
578 &d_max);
579 if (ACPI_FAILURE(status)) {
580 d_max = d_min;
581 } else if (d_max < d_min) {
582 /* Warn the user of the broken DSDT */
583 printk(KERN_WARNING "ACPI: Wrong value from %s\n",
584 acpi_method);
585 /* Sanitize it */
586 d_min = d_max;
587 }
588 }
589
590 if (d_min_p)
591 *d_min_p = d_min;
592 return d_max;
593}
594
595/**
596 * acpi_pm_device_sleep_wake - enable or disable the system wake-up
597 * capability of given device
598 * @dev: device to handle
599 * @enable: 'true' - enable, 'false' - disable the wake-up capability
600 */
601int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
602{
603 acpi_handle handle;
604 struct acpi_device *adev;
605
606 if (!device_may_wakeup(dev))
607 return -EINVAL;
608
609 handle = DEVICE_ACPI_HANDLE(dev);
610 if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
611 printk(KERN_DEBUG "ACPI handle has no context!\n");
612 return -ENODEV;
613 }
614
615 return enable ?
616 acpi_enable_wakeup_device_power(adev, acpi_target_sleep_state) :
617 acpi_disable_wakeup_device_power(adev);
618}
619#endif
620
621static void acpi_power_off_prepare(void)
622{
623 /* Prepare to power off the system */
624 acpi_sleep_prepare(ACPI_STATE_S5);
625 acpi_disable_all_gpes();
626}
627
628static void acpi_power_off(void)
629{
630 /* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
631 printk("%s called\n", __func__);
632 local_irq_disable();
633 acpi_enable_wakeup_device(ACPI_STATE_S5);
634 acpi_enter_sleep_state(ACPI_STATE_S5);
635}
636
637int __init acpi_sleep_init(void)
638{
639 acpi_status status;
640 u8 type_a, type_b;
641#ifdef CONFIG_SUSPEND
642 int i = 0;
643
644 dmi_check_system(acpisleep_dmi_table);
645#endif
646
647 if (acpi_disabled)
648 return 0;
649
650 sleep_states[ACPI_STATE_S0] = 1;
651 printk(KERN_INFO PREFIX "(supports S0");
652
653#ifdef CONFIG_SUSPEND
654 for (i = ACPI_STATE_S1; i < ACPI_STATE_S4; i++) {
655 status = acpi_get_sleep_type_data(i, &type_a, &type_b);
656 if (ACPI_SUCCESS(status)) {
657 sleep_states[i] = 1;
658 printk(" S%d", i);
659 }
660 }
661
662 suspend_set_ops(old_suspend_ordering ?
663 &acpi_suspend_ops_old : &acpi_suspend_ops);
664#endif
665
666#ifdef CONFIG_HIBERNATION
667 status = acpi_get_sleep_type_data(ACPI_STATE_S4, &type_a, &type_b);
668 if (ACPI_SUCCESS(status)) {
669 hibernation_set_ops(old_suspend_ordering ?
670 &acpi_hibernation_ops_old : &acpi_hibernation_ops);
671 sleep_states[ACPI_STATE_S4] = 1;
672 printk(" S4");
673 if (!nosigcheck) {
674 acpi_get_table(ACPI_SIG_FACS, 1,
675 (struct acpi_table_header **)&facs);
676 if (facs)
677 s4_hardware_signature =
678 facs->hardware_signature;
679 }
680 }
681#endif
682 status = acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b);
683 if (ACPI_SUCCESS(status)) {
684 sleep_states[ACPI_STATE_S5] = 1;
685 printk(" S5");
686 pm_power_off_prepare = acpi_power_off_prepare;
687 pm_power_off = acpi_power_off;
688 }
689 printk(")\n");
690 /*
691 * Register the tts_notifier to reboot notifier list so that the _TTS
692 * object can also be evaluated when the system enters S5.
693 */
694 register_reboot_notifier(&tts_notifier);
695 return 0;
696}
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
deleted file mode 100644
index 1c4851ff2657..000000000000
--- a/drivers/acpi/sleep/proc.c
+++ /dev/null
@@ -1,520 +0,0 @@
1#include <linux/proc_fs.h>
2#include <linux/seq_file.h>
3#include <linux/suspend.h>
4#include <linux/bcd.h>
5#include <asm/uaccess.h>
6
7#include <acpi/acpi_bus.h>
8#include <acpi/acpi_drivers.h>
9
10#ifdef CONFIG_X86
11#include <linux/mc146818rtc.h>
12#endif
13
14#include "sleep.h"
15
16#define _COMPONENT ACPI_SYSTEM_COMPONENT
17
18/*
19 * this file provides support for:
20 * /proc/acpi/sleep
21 * /proc/acpi/alarm
22 * /proc/acpi/wakeup
23 */
24
25ACPI_MODULE_NAME("sleep")
26#ifdef CONFIG_ACPI_PROCFS
27static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset)
28{
29 int i;
30
31 for (i = 0; i <= ACPI_STATE_S5; i++) {
32 if (sleep_states[i]) {
33 seq_printf(seq, "S%d ", i);
34 }
35 }
36
37 seq_puts(seq, "\n");
38
39 return 0;
40}
41
42static int acpi_system_sleep_open_fs(struct inode *inode, struct file *file)
43{
44 return single_open(file, acpi_system_sleep_seq_show, PDE(inode)->data);
45}
46
47static ssize_t
48acpi_system_write_sleep(struct file *file,
49 const char __user * buffer, size_t count, loff_t * ppos)
50{
51 char str[12];
52 u32 state = 0;
53 int error = 0;
54
55 if (count > sizeof(str) - 1)
56 goto Done;
57 memset(str, 0, sizeof(str));
58 if (copy_from_user(str, buffer, count))
59 return -EFAULT;
60
61 /* Check for S4 bios request */
62 if (!strcmp(str, "4b")) {
63 error = acpi_suspend(4);
64 goto Done;
65 }
66 state = simple_strtoul(str, NULL, 0);
67#ifdef CONFIG_HIBERNATION
68 if (state == 4) {
69 error = hibernate();
70 goto Done;
71 }
72#endif
73 error = acpi_suspend(state);
74 Done:
75 return error ? error : count;
76}
77#endif /* CONFIG_ACPI_PROCFS */
78
79#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) || !defined(CONFIG_X86)
80/* use /sys/class/rtc/rtcX/wakealarm instead; it's not ACPI-specific */
81#else
82#define HAVE_ACPI_LEGACY_ALARM
83#endif
84
85#ifdef HAVE_ACPI_LEGACY_ALARM
86
87static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset)
88{
89 u32 sec, min, hr;
90 u32 day, mo, yr, cent = 0;
91 unsigned char rtc_control = 0;
92 unsigned long flags;
93
94 spin_lock_irqsave(&rtc_lock, flags);
95
96 sec = CMOS_READ(RTC_SECONDS_ALARM);
97 min = CMOS_READ(RTC_MINUTES_ALARM);
98 hr = CMOS_READ(RTC_HOURS_ALARM);
99 rtc_control = CMOS_READ(RTC_CONTROL);
100
101 /* If we ever get an FACP with proper values... */
102 if (acpi_gbl_FADT.day_alarm)
103 /* ACPI spec: only low 6 its should be cared */
104 day = CMOS_READ(acpi_gbl_FADT.day_alarm) & 0x3F;
105 else
106 day = CMOS_READ(RTC_DAY_OF_MONTH);
107 if (acpi_gbl_FADT.month_alarm)
108 mo = CMOS_READ(acpi_gbl_FADT.month_alarm);
109 else
110 mo = CMOS_READ(RTC_MONTH);
111 if (acpi_gbl_FADT.century)
112 cent = CMOS_READ(acpi_gbl_FADT.century);
113
114 yr = CMOS_READ(RTC_YEAR);
115
116 spin_unlock_irqrestore(&rtc_lock, flags);
117
118 if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
119 sec = bcd2bin(sec);
120 min = bcd2bin(min);
121 hr = bcd2bin(hr);
122 day = bcd2bin(day);
123 mo = bcd2bin(mo);
124 yr = bcd2bin(yr);
125 cent = bcd2bin(cent);
126 }
127
128 /* we're trusting the FADT (see above) */
129 if (!acpi_gbl_FADT.century)
130 /* If we're not trusting the FADT, we should at least make it
131 * right for _this_ century... ehm, what is _this_ century?
132 *
133 * TBD:
134 * ASAP: find piece of code in the kernel, e.g. star tracker driver,
135 * which we can trust to determine the century correctly. Atom
136 * watch driver would be nice, too...
137 *
138 * if that has not happened, change for first release in 2050:
139 * if (yr<50)
140 * yr += 2100;
141 * else
142 * yr += 2000; // current line of code
143 *
144 * if that has not happened either, please do on 2099/12/31:23:59:59
145 * s/2000/2100
146 *
147 */
148 yr += 2000;
149 else
150 yr += cent * 100;
151
152 seq_printf(seq, "%4.4u-", yr);
153 (mo > 12) ? seq_puts(seq, "**-") : seq_printf(seq, "%2.2u-", mo);
154 (day > 31) ? seq_puts(seq, "** ") : seq_printf(seq, "%2.2u ", day);
155 (hr > 23) ? seq_puts(seq, "**:") : seq_printf(seq, "%2.2u:", hr);
156 (min > 59) ? seq_puts(seq, "**:") : seq_printf(seq, "%2.2u:", min);
157 (sec > 59) ? seq_puts(seq, "**\n") : seq_printf(seq, "%2.2u\n", sec);
158
159 return 0;
160}
161
162static int acpi_system_alarm_open_fs(struct inode *inode, struct file *file)
163{
164 return single_open(file, acpi_system_alarm_seq_show, PDE(inode)->data);
165}
166
167static int get_date_field(char **p, u32 * value)
168{
169 char *next = NULL;
170 char *string_end = NULL;
171 int result = -EINVAL;
172
173 /*
174 * Try to find delimeter, only to insert null. The end of the
175 * string won't have one, but is still valid.
176 */
177 if (*p == NULL)
178 return result;
179
180 next = strpbrk(*p, "- :");
181 if (next)
182 *next++ = '\0';
183
184 *value = simple_strtoul(*p, &string_end, 10);
185
186 /* Signal success if we got a good digit */
187 if (string_end != *p)
188 result = 0;
189
190 if (next)
191 *p = next;
192 else
193 *p = NULL;
194
195 return result;
196}
197
198/* Read a possibly BCD register, always return binary */
199static u32 cmos_bcd_read(int offset, int rtc_control)
200{
201 u32 val = CMOS_READ(offset);
202 if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
203 val = bcd2bin(val);
204 return val;
205}
206
207/* Write binary value into possibly BCD register */
208static void cmos_bcd_write(u32 val, int offset, int rtc_control)
209{
210 if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
211 val = bin2bcd(val);
212 CMOS_WRITE(val, offset);
213}
214
215static ssize_t
216acpi_system_write_alarm(struct file *file,
217 const char __user * buffer, size_t count, loff_t * ppos)
218{
219 int result = 0;
220 char alarm_string[30] = { '\0' };
221 char *p = alarm_string;
222 u32 sec, min, hr, day, mo, yr;
223 int adjust = 0;
224 unsigned char rtc_control = 0;
225
226 if (count > sizeof(alarm_string) - 1)
227 return -EINVAL;
228
229 if (copy_from_user(alarm_string, buffer, count))
230 return -EFAULT;
231
232 alarm_string[count] = '\0';
233
234 /* check for time adjustment */
235 if (alarm_string[0] == '+') {
236 p++;
237 adjust = 1;
238 }
239
240 if ((result = get_date_field(&p, &yr)))
241 goto end;
242 if ((result = get_date_field(&p, &mo)))
243 goto end;
244 if ((result = get_date_field(&p, &day)))
245 goto end;
246 if ((result = get_date_field(&p, &hr)))
247 goto end;
248 if ((result = get_date_field(&p, &min)))
249 goto end;
250 if ((result = get_date_field(&p, &sec)))
251 goto end;
252
253 spin_lock_irq(&rtc_lock);
254
255 rtc_control = CMOS_READ(RTC_CONTROL);
256
257 if (adjust) {
258 yr += cmos_bcd_read(RTC_YEAR, rtc_control);
259 mo += cmos_bcd_read(RTC_MONTH, rtc_control);
260 day += cmos_bcd_read(RTC_DAY_OF_MONTH, rtc_control);
261 hr += cmos_bcd_read(RTC_HOURS, rtc_control);
262 min += cmos_bcd_read(RTC_MINUTES, rtc_control);
263 sec += cmos_bcd_read(RTC_SECONDS, rtc_control);
264 }
265
266 spin_unlock_irq(&rtc_lock);
267
268 if (sec > 59) {
269 min += sec/60;
270 sec = sec%60;
271 }
272 if (min > 59) {
273 hr += min/60;
274 min = min%60;
275 }
276 if (hr > 23) {
277 day += hr/24;
278 hr = hr%24;
279 }
280 if (day > 31) {
281 mo += day/32;
282 day = day%32;
283 }
284 if (mo > 12) {
285 yr += mo/13;
286 mo = mo%13;
287 }
288
289 spin_lock_irq(&rtc_lock);
290 /*
291 * Disable alarm interrupt before setting alarm timer or else
292 * when ACPI_EVENT_RTC is enabled, a spurious ACPI interrupt occurs
293 */
294 rtc_control &= ~RTC_AIE;
295 CMOS_WRITE(rtc_control, RTC_CONTROL);
296 CMOS_READ(RTC_INTR_FLAGS);
297
298 /* write the fields the rtc knows about */
299 cmos_bcd_write(hr, RTC_HOURS_ALARM, rtc_control);
300 cmos_bcd_write(min, RTC_MINUTES_ALARM, rtc_control);
301 cmos_bcd_write(sec, RTC_SECONDS_ALARM, rtc_control);
302
303 /*
304 * If the system supports an enhanced alarm it will have non-zero
305 * offsets into the CMOS RAM here -- which for some reason are pointing
306 * to the RTC area of memory.
307 */
308 if (acpi_gbl_FADT.day_alarm)
309 cmos_bcd_write(day, acpi_gbl_FADT.day_alarm, rtc_control);
310 if (acpi_gbl_FADT.month_alarm)
311 cmos_bcd_write(mo, acpi_gbl_FADT.month_alarm, rtc_control);
312 if (acpi_gbl_FADT.century) {
313 if (adjust)
314 yr += cmos_bcd_read(acpi_gbl_FADT.century, rtc_control) * 100;
315 cmos_bcd_write(yr / 100, acpi_gbl_FADT.century, rtc_control);
316 }
317 /* enable the rtc alarm interrupt */
318 rtc_control |= RTC_AIE;
319 CMOS_WRITE(rtc_control, RTC_CONTROL);
320 CMOS_READ(RTC_INTR_FLAGS);
321
322 spin_unlock_irq(&rtc_lock);
323
324 acpi_clear_event(ACPI_EVENT_RTC);
325 acpi_enable_event(ACPI_EVENT_RTC, 0);
326
327 *ppos += count;
328
329 result = 0;
330 end:
331 return result ? result : count;
332}
333#endif /* HAVE_ACPI_LEGACY_ALARM */
334
335extern struct list_head acpi_wakeup_device_list;
336extern spinlock_t acpi_device_lock;
337
338static int
339acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
340{
341 struct list_head *node, *next;
342
343 seq_printf(seq, "Device\tS-state\t Status Sysfs node\n");
344
345 spin_lock(&acpi_device_lock);
346 list_for_each_safe(node, next, &acpi_wakeup_device_list) {
347 struct acpi_device *dev =
348 container_of(node, struct acpi_device, wakeup_list);
349 struct device *ldev;
350
351 if (!dev->wakeup.flags.valid)
352 continue;
353 spin_unlock(&acpi_device_lock);
354
355 ldev = acpi_get_physical_device(dev->handle);
356 seq_printf(seq, "%s\t S%d\t%c%-8s ",
357 dev->pnp.bus_id,
358 (u32) dev->wakeup.sleep_state,
359 dev->wakeup.flags.run_wake ? '*' : ' ',
360 dev->wakeup.state.enabled ? "enabled" : "disabled");
361 if (ldev)
362 seq_printf(seq, "%s:%s",
363 ldev->bus ? ldev->bus->name : "no-bus",
364 dev_name(ldev));
365 seq_printf(seq, "\n");
366 put_device(ldev);
367
368 spin_lock(&acpi_device_lock);
369 }
370 spin_unlock(&acpi_device_lock);
371 return 0;
372}
373
374static void physical_device_enable_wakeup(struct acpi_device *adev)
375{
376 struct device *dev = acpi_get_physical_device(adev->handle);
377
378 if (dev && device_can_wakeup(dev))
379 device_set_wakeup_enable(dev, adev->wakeup.state.enabled);
380}
381
382static ssize_t
383acpi_system_write_wakeup_device(struct file *file,
384 const char __user * buffer,
385 size_t count, loff_t * ppos)
386{
387 struct list_head *node, *next;
388 char strbuf[5];
389 char str[5] = "";
390 int len = count;
391 struct acpi_device *found_dev = NULL;
392
393 if (len > 4)
394 len = 4;
395
396 if (copy_from_user(strbuf, buffer, len))
397 return -EFAULT;
398 strbuf[len] = '\0';
399 sscanf(strbuf, "%s", str);
400
401 spin_lock(&acpi_device_lock);
402 list_for_each_safe(node, next, &acpi_wakeup_device_list) {
403 struct acpi_device *dev =
404 container_of(node, struct acpi_device, wakeup_list);
405 if (!dev->wakeup.flags.valid)
406 continue;
407
408 if (!strncmp(dev->pnp.bus_id, str, 4)) {
409 dev->wakeup.state.enabled =
410 dev->wakeup.state.enabled ? 0 : 1;
411 found_dev = dev;
412 break;
413 }
414 }
415 if (found_dev) {
416 physical_device_enable_wakeup(found_dev);
417 list_for_each_safe(node, next, &acpi_wakeup_device_list) {
418 struct acpi_device *dev = container_of(node,
419 struct
420 acpi_device,
421 wakeup_list);
422
423 if ((dev != found_dev) &&
424 (dev->wakeup.gpe_number ==
425 found_dev->wakeup.gpe_number)
426 && (dev->wakeup.gpe_device ==
427 found_dev->wakeup.gpe_device)) {
428 printk(KERN_WARNING
429 "ACPI: '%s' and '%s' have the same GPE, "
430 "can't disable/enable one seperately\n",
431 dev->pnp.bus_id, found_dev->pnp.bus_id);
432 dev->wakeup.state.enabled =
433 found_dev->wakeup.state.enabled;
434 physical_device_enable_wakeup(dev);
435 }
436 }
437 }
438 spin_unlock(&acpi_device_lock);
439 return count;
440}
441
442static int
443acpi_system_wakeup_device_open_fs(struct inode *inode, struct file *file)
444{
445 return single_open(file, acpi_system_wakeup_device_seq_show,
446 PDE(inode)->data);
447}
448
449static const struct file_operations acpi_system_wakeup_device_fops = {
450 .owner = THIS_MODULE,
451 .open = acpi_system_wakeup_device_open_fs,
452 .read = seq_read,
453 .write = acpi_system_write_wakeup_device,
454 .llseek = seq_lseek,
455 .release = single_release,
456};
457
458#ifdef CONFIG_ACPI_PROCFS
459static const struct file_operations acpi_system_sleep_fops = {
460 .owner = THIS_MODULE,
461 .open = acpi_system_sleep_open_fs,
462 .read = seq_read,
463 .write = acpi_system_write_sleep,
464 .llseek = seq_lseek,
465 .release = single_release,
466};
467#endif /* CONFIG_ACPI_PROCFS */
468
469#ifdef HAVE_ACPI_LEGACY_ALARM
470static const struct file_operations acpi_system_alarm_fops = {
471 .owner = THIS_MODULE,
472 .open = acpi_system_alarm_open_fs,
473 .read = seq_read,
474 .write = acpi_system_write_alarm,
475 .llseek = seq_lseek,
476 .release = single_release,
477};
478
479static u32 rtc_handler(void *context)
480{
481 acpi_clear_event(ACPI_EVENT_RTC);
482 acpi_disable_event(ACPI_EVENT_RTC, 0);
483
484 return ACPI_INTERRUPT_HANDLED;
485}
486#endif /* HAVE_ACPI_LEGACY_ALARM */
487
488static int __init acpi_sleep_proc_init(void)
489{
490 if (acpi_disabled)
491 return 0;
492
493#ifdef CONFIG_ACPI_PROCFS
494 /* 'sleep' [R/W] */
495 proc_create("sleep", S_IFREG | S_IRUGO | S_IWUSR,
496 acpi_root_dir, &acpi_system_sleep_fops);
497#endif /* CONFIG_ACPI_PROCFS */
498
499#ifdef HAVE_ACPI_LEGACY_ALARM
500 /* 'alarm' [R/W] */
501 proc_create("alarm", S_IFREG | S_IRUGO | S_IWUSR,
502 acpi_root_dir, &acpi_system_alarm_fops);
503
504 acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL);
505 /*
506 * Disable the RTC event after installing RTC handler.
507 * Only when RTC alarm is set will it be enabled.
508 */
509 acpi_clear_event(ACPI_EVENT_RTC);
510 acpi_disable_event(ACPI_EVENT_RTC, 0);
511#endif /* HAVE_ACPI_LEGACY_ALARM */
512
513 /* 'wakeup device' [R/W] */
514 proc_create("wakeup", S_IFREG | S_IRUGO | S_IWUSR,
515 acpi_root_dir, &acpi_system_wakeup_device_fops);
516
517 return 0;
518}
519
520late_initcall(acpi_sleep_proc_init);
diff --git a/drivers/acpi/sleep/sleep.h b/drivers/acpi/sleep/sleep.h
deleted file mode 100644
index cfaf8f5b0a14..000000000000
--- a/drivers/acpi/sleep/sleep.h
+++ /dev/null
@@ -1,7 +0,0 @@
1
2extern u8 sleep_states[];
3extern int acpi_suspend (u32 state);
4
5extern void acpi_enable_wakeup_device_prep(u8 sleep_state);
6extern void acpi_enable_wakeup_device(u8 sleep_state);
7extern void acpi_disable_wakeup_device(u8 sleep_state);
diff --git a/drivers/acpi/sleep/wakeup.c b/drivers/acpi/sleep/wakeup.c
deleted file mode 100644
index 2d34806d45dd..000000000000
--- a/drivers/acpi/sleep/wakeup.c
+++ /dev/null
@@ -1,167 +0,0 @@
1/*
2 * wakeup.c - support wakeup devices
3 * Copyright (C) 2004 Li Shaohua <shaohua.li@intel.com>
4 */
5
6#include <linux/init.h>
7#include <linux/acpi.h>
8#include <acpi/acpi_drivers.h>
9#include <linux/kernel.h>
10#include <linux/types.h>
11#include "sleep.h"
12
13#define _COMPONENT ACPI_SYSTEM_COMPONENT
14ACPI_MODULE_NAME("wakeup_devices")
15
16extern struct list_head acpi_wakeup_device_list;
17extern spinlock_t acpi_device_lock;
18
19/**
20 * acpi_enable_wakeup_device_prep - prepare wakeup devices
21 * @sleep_state: ACPI state
22 * Enable all wakup devices power if the devices' wakeup level
23 * is higher than requested sleep level
24 */
25
26void acpi_enable_wakeup_device_prep(u8 sleep_state)
27{
28 struct list_head *node, *next;
29
30 spin_lock(&acpi_device_lock);
31 list_for_each_safe(node, next, &acpi_wakeup_device_list) {
32 struct acpi_device *dev = container_of(node,
33 struct acpi_device,
34 wakeup_list);
35
36 if (!dev->wakeup.flags.valid ||
37 !dev->wakeup.state.enabled ||
38 (sleep_state > (u32) dev->wakeup.sleep_state))
39 continue;
40
41 spin_unlock(&acpi_device_lock);
42 acpi_enable_wakeup_device_power(dev, sleep_state);
43 spin_lock(&acpi_device_lock);
44 }
45 spin_unlock(&acpi_device_lock);
46}
47
48/**
49 * acpi_enable_wakeup_device - enable wakeup devices
50 * @sleep_state: ACPI state
51 * Enable all wakup devices's GPE
52 */
53void acpi_enable_wakeup_device(u8 sleep_state)
54{
55 struct list_head *node, *next;
56
57 /*
58 * Caution: this routine must be invoked when interrupt is disabled
59 * Refer ACPI2.0: P212
60 */
61 spin_lock(&acpi_device_lock);
62 list_for_each_safe(node, next, &acpi_wakeup_device_list) {
63 struct acpi_device *dev =
64 container_of(node, struct acpi_device, wakeup_list);
65
66 if (!dev->wakeup.flags.valid)
67 continue;
68
69 /* If users want to disable run-wake GPE,
70 * we only disable it for wake and leave it for runtime
71 */
72 if ((!dev->wakeup.state.enabled && !dev->wakeup.flags.prepared)
73 || sleep_state > (u32) dev->wakeup.sleep_state) {
74 if (dev->wakeup.flags.run_wake) {
75 spin_unlock(&acpi_device_lock);
76 /* set_gpe_type will disable GPE, leave it like that */
77 acpi_set_gpe_type(dev->wakeup.gpe_device,
78 dev->wakeup.gpe_number,
79 ACPI_GPE_TYPE_RUNTIME);
80 spin_lock(&acpi_device_lock);
81 }
82 continue;
83 }
84 spin_unlock(&acpi_device_lock);
85 if (!dev->wakeup.flags.run_wake)
86 acpi_enable_gpe(dev->wakeup.gpe_device,
87 dev->wakeup.gpe_number);
88 spin_lock(&acpi_device_lock);
89 }
90 spin_unlock(&acpi_device_lock);
91}
92
93/**
94 * acpi_disable_wakeup_device - disable devices' wakeup capability
95 * @sleep_state: ACPI state
96 * Disable all wakup devices's GPE and wakeup capability
97 */
98void acpi_disable_wakeup_device(u8 sleep_state)
99{
100 struct list_head *node, *next;
101
102 spin_lock(&acpi_device_lock);
103 list_for_each_safe(node, next, &acpi_wakeup_device_list) {
104 struct acpi_device *dev =
105 container_of(node, struct acpi_device, wakeup_list);
106
107 if (!dev->wakeup.flags.valid)
108 continue;
109
110 if ((!dev->wakeup.state.enabled && !dev->wakeup.flags.prepared)
111 || sleep_state > (u32) dev->wakeup.sleep_state) {
112 if (dev->wakeup.flags.run_wake) {
113 spin_unlock(&acpi_device_lock);
114 acpi_set_gpe_type(dev->wakeup.gpe_device,
115 dev->wakeup.gpe_number,
116 ACPI_GPE_TYPE_WAKE_RUN);
117 /* Re-enable it, since set_gpe_type will disable it */
118 acpi_enable_gpe(dev->wakeup.gpe_device,
119 dev->wakeup.gpe_number);
120 spin_lock(&acpi_device_lock);
121 }
122 continue;
123 }
124
125 spin_unlock(&acpi_device_lock);
126 acpi_disable_wakeup_device_power(dev);
127 /* Never disable run-wake GPE */
128 if (!dev->wakeup.flags.run_wake) {
129 acpi_disable_gpe(dev->wakeup.gpe_device,
130 dev->wakeup.gpe_number);
131 acpi_clear_gpe(dev->wakeup.gpe_device,
132 dev->wakeup.gpe_number, ACPI_NOT_ISR);
133 }
134 spin_lock(&acpi_device_lock);
135 }
136 spin_unlock(&acpi_device_lock);
137}
138
139static int __init acpi_wakeup_device_init(void)
140{
141 struct list_head *node, *next;
142
143 if (acpi_disabled)
144 return 0;
145
146 spin_lock(&acpi_device_lock);
147 list_for_each_safe(node, next, &acpi_wakeup_device_list) {
148 struct acpi_device *dev = container_of(node,
149 struct acpi_device,
150 wakeup_list);
151 /* In case user doesn't load button driver */
152 if (!dev->wakeup.flags.run_wake || dev->wakeup.state.enabled)
153 continue;
154 spin_unlock(&acpi_device_lock);
155 acpi_set_gpe_type(dev->wakeup.gpe_device,
156 dev->wakeup.gpe_number,
157 ACPI_GPE_TYPE_WAKE_RUN);
158 acpi_enable_gpe(dev->wakeup.gpe_device,
159 dev->wakeup.gpe_number);
160 dev->wakeup.state.enabled = 1;
161 spin_lock(&acpi_device_lock);
162 }
163 spin_unlock(&acpi_device_lock);
164 return 0;
165}
166
167late_initcall(acpi_wakeup_device_init);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-05 00:51:38 -0500