blob: 3839efd5eaea7e7747e60e996bf9697fa04a8049 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#define _COMPONENT ACPI_SYSTEM_COMPONENT
Len Brown43532c82007-07-24 02:16:50 -040017
18/*
19 * this file provides support for:
20 * /proc/acpi/sleep
21 * /proc/acpi/alarm
22 * /proc/acpi/wakeup
23 */
24
Len Brown4be44fc2005-08-05 00:44:28 -040025ACPI_MODULE_NAME("sleep")
Christian Borntraeger134c2172007-08-28 14:58:56 -040026#ifdef CONFIG_ACPI_PROCFS
Linus Torvalds1da177e2005-04-16 15:20:36 -070027static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset)
28{
Len Brown4be44fc2005-08-05 00:44:28 -040029 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -070030
31 ACPI_FUNCTION_TRACE("acpi_system_sleep_seq_show");
32
33 for (i = 0; i <= ACPI_STATE_S5; i++) {
34 if (sleep_states[i]) {
Len Brown4be44fc2005-08-05 00:44:28 -040035 seq_printf(seq, "S%d ", i);
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 }
37 }
38
39 seq_puts(seq, "\n");
40
41 return 0;
42}
43
44static int acpi_system_sleep_open_fs(struct inode *inode, struct file *file)
45{
46 return single_open(file, acpi_system_sleep_seq_show, PDE(inode)->data);
47}
48
49static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -040050acpi_system_write_sleep(struct file *file,
51 const char __user * buffer, size_t count, loff_t * ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -070052{
Len Brown4be44fc2005-08-05 00:44:28 -040053 char str[12];
54 u32 state = 0;
55 int error = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57 if (count > sizeof(str) - 1)
58 goto Done;
Len Brown4be44fc2005-08-05 00:44:28 -040059 memset(str, 0, sizeof(str));
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 if (copy_from_user(str, buffer, count))
61 return -EFAULT;
62
63 /* Check for S4 bios request */
Len Brown4be44fc2005-08-05 00:44:28 -040064 if (!strcmp(str, "4b")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 error = acpi_suspend(4);
66 goto Done;
67 }
68 state = simple_strtoul(str, NULL, 0);
Rafael J. Wysockib0cb1a12007-07-29 23:24:36 +020069#ifdef CONFIG_HIBERNATION
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 if (state == 4) {
Rafael J. Wysockia3d25c22007-05-09 02:33:18 -070071 error = hibernate();
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 goto Done;
73 }
74#endif
75 error = acpi_suspend(state);
Len Brown4be44fc2005-08-05 00:44:28 -040076 Done:
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 return error ? error : count;
78}
Christian Borntraeger134c2172007-08-28 14:58:56 -040079#endif /* CONFIG_ACPI_PROCFS */
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
Len Brown673d5b42007-07-28 03:33:16 -040081#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) || !defined(CONFIG_X86)
David Brownellf5f72b42007-05-08 00:34:02 -070082/* use /sys/class/rtc/rtcX/wakealarm instead; it's not ACPI-specific */
83#else
84#define HAVE_ACPI_LEGACY_ALARM
85#endif
86
87#ifdef HAVE_ACPI_LEGACY_ALARM
88
Linus Torvalds1da177e2005-04-16 15:20:36 -070089static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset)
90{
Len Brown4be44fc2005-08-05 00:44:28 -040091 u32 sec, min, hr;
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030092 u32 day, mo, yr, cent = 0;
Len Brown4be44fc2005-08-05 00:44:28 -040093 unsigned char rtc_control = 0;
94 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
96 ACPI_FUNCTION_TRACE("acpi_system_alarm_seq_show");
97
98 spin_lock_irqsave(&rtc_lock, flags);
99
100 sec = CMOS_READ(RTC_SECONDS_ALARM);
101 min = CMOS_READ(RTC_MINUTES_ALARM);
102 hr = CMOS_READ(RTC_HOURS_ALARM);
103 rtc_control = CMOS_READ(RTC_CONTROL);
104
105 /* If we ever get an FACP with proper values... */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +0300106 if (acpi_gbl_FADT.day_alarm)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 /* ACPI spec: only low 6 its should be cared */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +0300108 day = CMOS_READ(acpi_gbl_FADT.day_alarm) & 0x3F;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 else
Len Brown4be44fc2005-08-05 00:44:28 -0400110 day = CMOS_READ(RTC_DAY_OF_MONTH);
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +0300111 if (acpi_gbl_FADT.month_alarm)
112 mo = CMOS_READ(acpi_gbl_FADT.month_alarm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113 else
114 mo = CMOS_READ(RTC_MONTH);
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +0300115 if (acpi_gbl_FADT.century)
116 cent = CMOS_READ(acpi_gbl_FADT.century);
117
118 yr = CMOS_READ(RTC_YEAR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
120 spin_unlock_irqrestore(&rtc_lock, flags);
121
122 if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
123 BCD_TO_BIN(sec);
124 BCD_TO_BIN(min);
125 BCD_TO_BIN(hr);
126 BCD_TO_BIN(day);
127 BCD_TO_BIN(mo);
128 BCD_TO_BIN(yr);
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +0300129 BCD_TO_BIN(cent);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 }
131
Len Brown4be44fc2005-08-05 00:44:28 -0400132 /* we're trusting the FADT (see above) */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +0300133 if (!acpi_gbl_FADT.century)
Len Brown4be44fc2005-08-05 00:44:28 -0400134 /* If we're not trusting the FADT, we should at least make it
135 * right for _this_ century... ehm, what is _this_ century?
136 *
137 * TBD:
138 * ASAP: find piece of code in the kernel, e.g. star tracker driver,
139 * which we can trust to determine the century correctly. Atom
140 * watch driver would be nice, too...
141 *
142 * if that has not happened, change for first release in 2050:
143 * if (yr<50)
144 * yr += 2100;
145 * else
146 * yr += 2000; // current line of code
147 *
148 * if that has not happened either, please do on 2099/12/31:23:59:59
149 * s/2000/2100
150 *
151 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 yr += 2000;
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +0300153 else
154 yr += cent * 100;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
Len Brown4be44fc2005-08-05 00:44:28 -0400156 seq_printf(seq, "%4.4u-", yr);
157 (mo > 12) ? seq_puts(seq, "**-") : seq_printf(seq, "%2.2u-", mo);
158 (day > 31) ? seq_puts(seq, "** ") : seq_printf(seq, "%2.2u ", day);
159 (hr > 23) ? seq_puts(seq, "**:") : seq_printf(seq, "%2.2u:", hr);
160 (min > 59) ? seq_puts(seq, "**:") : seq_printf(seq, "%2.2u:", min);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 (sec > 59) ? seq_puts(seq, "**\n") : seq_printf(seq, "%2.2u\n", sec);
162
163 return 0;
164}
165
166static int acpi_system_alarm_open_fs(struct inode *inode, struct file *file)
167{
168 return single_open(file, acpi_system_alarm_seq_show, PDE(inode)->data);
169}
170
Len Brown4be44fc2005-08-05 00:44:28 -0400171static int get_date_field(char **p, u32 * value)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172{
Len Brown4be44fc2005-08-05 00:44:28 -0400173 char *next = NULL;
174 char *string_end = NULL;
175 int result = -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
177 /*
178 * Try to find delimeter, only to insert null. The end of the
179 * string won't have one, but is still valid.
180 */
181 next = strpbrk(*p, "- :");
182 if (next)
183 *next++ = '\0';
184
185 *value = simple_strtoul(*p, &string_end, 10);
186
187 /* Signal success if we got a good digit */
188 if (string_end != *p)
189 result = 0;
190
191 if (next)
192 *p = next;
193
194 return result;
195}
196
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -0400198acpi_system_write_alarm(struct file *file,
199 const char __user * buffer, size_t count, loff_t * ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200{
Len Brown4be44fc2005-08-05 00:44:28 -0400201 int result = 0;
202 char alarm_string[30] = { '\0' };
203 char *p = alarm_string;
204 u32 sec, min, hr, day, mo, yr;
205 int adjust = 0;
206 unsigned char rtc_control = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207
208 ACPI_FUNCTION_TRACE("acpi_system_write_alarm");
209
210 if (count > sizeof(alarm_string) - 1)
211 return_VALUE(-EINVAL);
Len Brown4be44fc2005-08-05 00:44:28 -0400212
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 if (copy_from_user(alarm_string, buffer, count))
214 return_VALUE(-EFAULT);
215
216 alarm_string[count] = '\0';
217
218 /* check for time adjustment */
219 if (alarm_string[0] == '+') {
220 p++;
221 adjust = 1;
222 }
223
224 if ((result = get_date_field(&p, &yr)))
225 goto end;
226 if ((result = get_date_field(&p, &mo)))
227 goto end;
228 if ((result = get_date_field(&p, &day)))
229 goto end;
230 if ((result = get_date_field(&p, &hr)))
231 goto end;
232 if ((result = get_date_field(&p, &min)))
233 goto end;
234 if ((result = get_date_field(&p, &sec)))
235 goto end;
236
237 if (sec > 59) {
238 min += 1;
239 sec -= 60;
240 }
241 if (min > 59) {
242 hr += 1;
243 min -= 60;
244 }
245 if (hr > 23) {
246 day += 1;
247 hr -= 24;
248 }
249 if (day > 31) {
250 mo += 1;
251 day -= 31;
252 }
253 if (mo > 12) {
254 yr += 1;
255 mo -= 12;
256 }
257
258 spin_lock_irq(&rtc_lock);
259
260 rtc_control = CMOS_READ(RTC_CONTROL);
261 if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
262 BIN_TO_BCD(yr);
263 BIN_TO_BCD(mo);
264 BIN_TO_BCD(day);
265 BIN_TO_BCD(hr);
266 BIN_TO_BCD(min);
267 BIN_TO_BCD(sec);
268 }
269
270 if (adjust) {
Len Brown4be44fc2005-08-05 00:44:28 -0400271 yr += CMOS_READ(RTC_YEAR);
272 mo += CMOS_READ(RTC_MONTH);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 day += CMOS_READ(RTC_DAY_OF_MONTH);
Len Brown4be44fc2005-08-05 00:44:28 -0400274 hr += CMOS_READ(RTC_HOURS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 min += CMOS_READ(RTC_MINUTES);
276 sec += CMOS_READ(RTC_SECONDS);
277 }
278
279 spin_unlock_irq(&rtc_lock);
280
281 if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
282 BCD_TO_BIN(yr);
283 BCD_TO_BIN(mo);
284 BCD_TO_BIN(day);
285 BCD_TO_BIN(hr);
286 BCD_TO_BIN(min);
287 BCD_TO_BIN(sec);
288 }
289
290 if (sec > 59) {
291 min++;
292 sec -= 60;
293 }
294 if (min > 59) {
295 hr++;
296 min -= 60;
297 }
298 if (hr > 23) {
299 day++;
300 hr -= 24;
301 }
302 if (day > 31) {
303 mo++;
304 day -= 31;
305 }
306 if (mo > 12) {
307 yr++;
308 mo -= 12;
309 }
310 if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
311 BIN_TO_BCD(yr);
312 BIN_TO_BCD(mo);
313 BIN_TO_BCD(day);
314 BIN_TO_BCD(hr);
315 BIN_TO_BCD(min);
316 BIN_TO_BCD(sec);
317 }
318
319 spin_lock_irq(&rtc_lock);
320 /*
321 * Disable alarm interrupt before setting alarm timer or else
322 * when ACPI_EVENT_RTC is enabled, a spurious ACPI interrupt occurs
323 */
324 rtc_control &= ~RTC_AIE;
325 CMOS_WRITE(rtc_control, RTC_CONTROL);
326 CMOS_READ(RTC_INTR_FLAGS);
327
328 /* write the fields the rtc knows about */
329 CMOS_WRITE(hr, RTC_HOURS_ALARM);
330 CMOS_WRITE(min, RTC_MINUTES_ALARM);
331 CMOS_WRITE(sec, RTC_SECONDS_ALARM);
332
333 /*
334 * If the system supports an enhanced alarm it will have non-zero
335 * offsets into the CMOS RAM here -- which for some reason are pointing
336 * to the RTC area of memory.
337 */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +0300338 if (acpi_gbl_FADT.day_alarm)
339 CMOS_WRITE(day, acpi_gbl_FADT.day_alarm);
340 if (acpi_gbl_FADT.month_alarm)
341 CMOS_WRITE(mo, acpi_gbl_FADT.month_alarm);
342 if (acpi_gbl_FADT.century)
343 CMOS_WRITE(yr / 100, acpi_gbl_FADT.century);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 /* enable the rtc alarm interrupt */
345 rtc_control |= RTC_AIE;
346 CMOS_WRITE(rtc_control, RTC_CONTROL);
347 CMOS_READ(RTC_INTR_FLAGS);
348
349 spin_unlock_irq(&rtc_lock);
350
351 acpi_clear_event(ACPI_EVENT_RTC);
352 acpi_enable_event(ACPI_EVENT_RTC, 0);
353
354 *ppos += count;
355
356 result = 0;
Len Brown4be44fc2005-08-05 00:44:28 -0400357 end:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 return_VALUE(result ? result : count);
359}
Len Brownfd350942007-05-09 23:34:35 -0400360#endif /* HAVE_ACPI_LEGACY_ALARM */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
Len Brown4be44fc2005-08-05 00:44:28 -0400362extern struct list_head acpi_wakeup_device_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363extern spinlock_t acpi_device_lock;
364
365static int
366acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
367{
Len Brown4be44fc2005-08-05 00:44:28 -0400368 struct list_head *node, *next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
David Brownell8aa55592007-04-25 15:20:10 -0400370 seq_printf(seq, "Device\tS-state\t Status Sysfs node\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
372 spin_lock(&acpi_device_lock);
373 list_for_each_safe(node, next, &acpi_wakeup_device_list) {
Len Brown4be44fc2005-08-05 00:44:28 -0400374 struct acpi_device *dev =
375 container_of(node, struct acpi_device, wakeup_list);
David Brownell8aa55592007-04-25 15:20:10 -0400376 struct device *ldev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377
378 if (!dev->wakeup.flags.valid)
379 continue;
380 spin_unlock(&acpi_device_lock);
David Brownell8aa55592007-04-25 15:20:10 -0400381
382 ldev = acpi_get_physical_device(dev->handle);
383 seq_printf(seq, "%s\t S%d\t%c%-8s ",
Len Brown4be44fc2005-08-05 00:44:28 -0400384 dev->pnp.bus_id,
385 (u32) dev->wakeup.sleep_state,
David Brownell8aa55592007-04-25 15:20:10 -0400386 dev->wakeup.flags.run_wake ? '*' : ' ',
Pavel Machekc65ade42005-08-05 00:37:45 -0400387 dev->wakeup.state.enabled ? "enabled" : "disabled");
David Brownell8aa55592007-04-25 15:20:10 -0400388 if (ldev)
389 seq_printf(seq, "%s:%s",
Len Brownfd350942007-05-09 23:34:35 -0400390 ldev->bus ? ldev->bus->name : "no-bus",
391 ldev->bus_id);
David Brownell8aa55592007-04-25 15:20:10 -0400392 seq_printf(seq, "\n");
393 put_device(ldev);
394
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 spin_lock(&acpi_device_lock);
396 }
397 spin_unlock(&acpi_device_lock);
398 return 0;
399}
400
401static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -0400402acpi_system_write_wakeup_device(struct file *file,
403 const char __user * buffer,
404 size_t count, loff_t * ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405{
Len Brown4be44fc2005-08-05 00:44:28 -0400406 struct list_head *node, *next;
407 char strbuf[5];
408 char str[5] = "";
409 int len = count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 struct acpi_device *found_dev = NULL;
411
Len Brown4be44fc2005-08-05 00:44:28 -0400412 if (len > 4)
413 len = 4;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414
415 if (copy_from_user(strbuf, buffer, len))
416 return -EFAULT;
417 strbuf[len] = '\0';
418 sscanf(strbuf, "%s", str);
419
420 spin_lock(&acpi_device_lock);
421 list_for_each_safe(node, next, &acpi_wakeup_device_list) {
Len Brown4be44fc2005-08-05 00:44:28 -0400422 struct acpi_device *dev =
423 container_of(node, struct acpi_device, wakeup_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 if (!dev->wakeup.flags.valid)
425 continue;
426
427 if (!strncmp(dev->pnp.bus_id, str, 4)) {
Len Brown4be44fc2005-08-05 00:44:28 -0400428 dev->wakeup.state.enabled =
429 dev->wakeup.state.enabled ? 0 : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 found_dev = dev;
431 break;
432 }
433 }
434 if (found_dev) {
435 list_for_each_safe(node, next, &acpi_wakeup_device_list) {
Len Brown4be44fc2005-08-05 00:44:28 -0400436 struct acpi_device *dev = container_of(node,
437 struct
438 acpi_device,
439 wakeup_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
441 if ((dev != found_dev) &&
Len Brown4be44fc2005-08-05 00:44:28 -0400442 (dev->wakeup.gpe_number ==
443 found_dev->wakeup.gpe_number)
444 && (dev->wakeup.gpe_device ==
445 found_dev->wakeup.gpe_device)) {
446 printk(KERN_WARNING
447 "ACPI: '%s' and '%s' have the same GPE, "
448 "can't disable/enable one seperately\n",
449 dev->pnp.bus_id, found_dev->pnp.bus_id);
450 dev->wakeup.state.enabled =
451 found_dev->wakeup.state.enabled;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 }
453 }
454 }
455 spin_unlock(&acpi_device_lock);
456 return count;
457}
458
459static int
460acpi_system_wakeup_device_open_fs(struct inode *inode, struct file *file)
461{
Len Brown4be44fc2005-08-05 00:44:28 -0400462 return single_open(file, acpi_system_wakeup_device_seq_show,
463 PDE(inode)->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464}
465
Arjan van de Vend7508032006-07-04 13:06:00 -0400466static const struct file_operations acpi_system_wakeup_device_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400467 .open = acpi_system_wakeup_device_open_fs,
468 .read = seq_read,
469 .write = acpi_system_write_wakeup_device,
470 .llseek = seq_lseek,
471 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472};
473
Christian Borntraeger134c2172007-08-28 14:58:56 -0400474#ifdef CONFIG_ACPI_PROCFS
Arjan van de Vend7508032006-07-04 13:06:00 -0400475static const struct file_operations acpi_system_sleep_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400476 .open = acpi_system_sleep_open_fs,
477 .read = seq_read,
478 .write = acpi_system_write_sleep,
479 .llseek = seq_lseek,
480 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481};
Christian Borntraeger134c2172007-08-28 14:58:56 -0400482#endif /* CONFIG_ACPI_PROCFS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483
David Brownellf5f72b42007-05-08 00:34:02 -0700484#ifdef HAVE_ACPI_LEGACY_ALARM
Arjan van de Vend7508032006-07-04 13:06:00 -0400485static const struct file_operations acpi_system_alarm_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400486 .open = acpi_system_alarm_open_fs,
487 .read = seq_read,
488 .write = acpi_system_write_alarm,
489 .llseek = seq_lseek,
490 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491};
492
Len Brown4be44fc2005-08-05 00:44:28 -0400493static u32 rtc_handler(void *context)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494{
495 acpi_clear_event(ACPI_EVENT_RTC);
496 acpi_disable_event(ACPI_EVENT_RTC, 0);
497
498 return ACPI_INTERRUPT_HANDLED;
499}
Len Brownfd350942007-05-09 23:34:35 -0400500#endif /* HAVE_ACPI_LEGACY_ALARM */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
David Brownellf5f72b42007-05-08 00:34:02 -0700502static int __init acpi_sleep_proc_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503{
Pavel Machekc65ade42005-08-05 00:37:45 -0400504 struct proc_dir_entry *entry = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505
506 if (acpi_disabled)
507 return 0;
Len Brown4be44fc2005-08-05 00:44:28 -0400508
Christian Borntraeger134c2172007-08-28 14:58:56 -0400509#ifdef CONFIG_ACPI_PROCFS
Pavel Machekc65ade42005-08-05 00:37:45 -0400510 /* 'sleep' [R/W] */
Len Brown4be44fc2005-08-05 00:44:28 -0400511 entry =
512 create_proc_entry("sleep", S_IFREG | S_IRUGO | S_IWUSR,
513 acpi_root_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 if (entry)
515 entry->proc_fops = &acpi_system_sleep_fops;
Len Brown43532c82007-07-24 02:16:50 -0400516#endif /* CONFIG_ACPI_PROCFS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517
David Brownellf5f72b42007-05-08 00:34:02 -0700518#ifdef HAVE_ACPI_LEGACY_ALARM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 /* 'alarm' [R/W] */
Len Brown4be44fc2005-08-05 00:44:28 -0400520 entry =
521 create_proc_entry("alarm", S_IFREG | S_IRUGO | S_IWUSR,
522 acpi_root_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 if (entry)
524 entry->proc_fops = &acpi_system_alarm_fops;
525
David Brownellf5f72b42007-05-08 00:34:02 -0700526 acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL);
Len Brownfd350942007-05-09 23:34:35 -0400527#endif /* HAVE_ACPI_LEGACY_ALARM */
David Brownellf5f72b42007-05-08 00:34:02 -0700528
Pavel Machekc65ade42005-08-05 00:37:45 -0400529 /* 'wakeup device' [R/W] */
Len Brown4be44fc2005-08-05 00:44:28 -0400530 entry =
531 create_proc_entry("wakeup", S_IFREG | S_IRUGO | S_IWUSR,
532 acpi_root_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 if (entry)
534 entry->proc_fops = &acpi_system_wakeup_device_fops;
535
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 return 0;
537}
538
539late_initcall(acpi_sleep_proc_init);