Commit | Line | Data |
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1da177e4 LT |
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 | ||
1da177e4 | 16 | #define _COMPONENT ACPI_SYSTEM_COMPONENT |
43532c8a LB |
17 | |
18 | /* | |
19 | * this file provides support for: | |
20 | * /proc/acpi/sleep | |
21 | * /proc/acpi/alarm | |
22 | * /proc/acpi/wakeup | |
23 | */ | |
24 | ||
4be44fcd | 25 | ACPI_MODULE_NAME("sleep") |
134c2171 | 26 | #ifdef CONFIG_ACPI_PROCFS |
1da177e4 LT |
27 | static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset) |
28 | { | |
4be44fcd | 29 | int i; |
1da177e4 LT |
30 | |
31 | ACPI_FUNCTION_TRACE("acpi_system_sleep_seq_show"); | |
32 | ||
33 | for (i = 0; i <= ACPI_STATE_S5; i++) { | |
34 | if (sleep_states[i]) { | |
4be44fcd | 35 | seq_printf(seq, "S%d ", i); |
1da177e4 LT |
36 | } |
37 | } | |
38 | ||
39 | seq_puts(seq, "\n"); | |
40 | ||
41 | return 0; | |
42 | } | |
43 | ||
44 | static 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 | ||
49 | static ssize_t | |
4be44fcd LB |
50 | acpi_system_write_sleep(struct file *file, |
51 | const char __user * buffer, size_t count, loff_t * ppos) | |
1da177e4 | 52 | { |
4be44fcd LB |
53 | char str[12]; |
54 | u32 state = 0; | |
55 | int error = 0; | |
1da177e4 LT |
56 | |
57 | if (count > sizeof(str) - 1) | |
58 | goto Done; | |
4be44fcd | 59 | memset(str, 0, sizeof(str)); |
1da177e4 LT |
60 | if (copy_from_user(str, buffer, count)) |
61 | return -EFAULT; | |
62 | ||
63 | /* Check for S4 bios request */ | |
4be44fcd | 64 | if (!strcmp(str, "4b")) { |
1da177e4 LT |
65 | error = acpi_suspend(4); |
66 | goto Done; | |
67 | } | |
68 | state = simple_strtoul(str, NULL, 0); | |
b0cb1a19 | 69 | #ifdef CONFIG_HIBERNATION |
1da177e4 | 70 | if (state == 4) { |
a3d25c27 | 71 | error = hibernate(); |
1da177e4 LT |
72 | goto Done; |
73 | } | |
74 | #endif | |
75 | error = acpi_suspend(state); | |
4be44fcd | 76 | Done: |
1da177e4 LT |
77 | return error ? error : count; |
78 | } | |
134c2171 | 79 | #endif /* CONFIG_ACPI_PROCFS */ |
1da177e4 | 80 | |
673d5b43 | 81 | #if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) || !defined(CONFIG_X86) |
f5f72b46 DB |
82 | /* 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 | ||
1da177e4 LT |
89 | static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset) |
90 | { | |
4be44fcd | 91 | u32 sec, min, hr; |
ad71860a | 92 | u32 day, mo, yr, cent = 0; |
4be44fcd LB |
93 | unsigned char rtc_control = 0; |
94 | unsigned long flags; | |
1da177e4 LT |
95 | |
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... */ | |
ad71860a | 106 | if (acpi_gbl_FADT.day_alarm) |
1da177e4 | 107 | /* ACPI spec: only low 6 its should be cared */ |
ad71860a | 108 | day = CMOS_READ(acpi_gbl_FADT.day_alarm) & 0x3F; |
1da177e4 | 109 | else |
4be44fcd | 110 | day = CMOS_READ(RTC_DAY_OF_MONTH); |
ad71860a AS |
111 | if (acpi_gbl_FADT.month_alarm) |
112 | mo = CMOS_READ(acpi_gbl_FADT.month_alarm); | |
1da177e4 LT |
113 | else |
114 | mo = CMOS_READ(RTC_MONTH); | |
ad71860a AS |
115 | if (acpi_gbl_FADT.century) |
116 | cent = CMOS_READ(acpi_gbl_FADT.century); | |
117 | ||
118 | yr = CMOS_READ(RTC_YEAR); | |
1da177e4 LT |
119 | |
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); | |
ad71860a | 129 | BCD_TO_BIN(cent); |
1da177e4 LT |
130 | } |
131 | ||
4be44fcd | 132 | /* we're trusting the FADT (see above) */ |
ad71860a | 133 | if (!acpi_gbl_FADT.century) |
4be44fcd LB |
134 | /* 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 | */ | |
1da177e4 | 152 | yr += 2000; |
ad71860a AS |
153 | else |
154 | yr += cent * 100; | |
1da177e4 | 155 | |
4be44fcd LB |
156 | 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); | |
1da177e4 LT |
161 | (sec > 59) ? seq_puts(seq, "**\n") : seq_printf(seq, "%2.2u\n", sec); |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
166 | static 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 | ||
4be44fcd | 171 | static int get_date_field(char **p, u32 * value) |
1da177e4 | 172 | { |
4be44fcd LB |
173 | char *next = NULL; |
174 | char *string_end = NULL; | |
175 | int result = -EINVAL; | |
1da177e4 LT |
176 | |
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 | ||
c67c36e4 LT |
197 | /* Read a possibly BCD register, always return binary */ |
198 | static u32 cmos_bcd_read(int offset, int rtc_control) | |
199 | { | |
200 | u32 val = CMOS_READ(offset); | |
201 | if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) | |
202 | BCD_TO_BIN(val); | |
203 | return val; | |
204 | } | |
205 | ||
206 | /* Write binary value into possibly BCD register */ | |
207 | static void cmos_bcd_write(u32 val, int offset, int rtc_control) | |
208 | { | |
209 | if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) | |
210 | BIN_TO_BCD(val); | |
211 | CMOS_WRITE(val, offset); | |
212 | } | |
213 | ||
1da177e4 | 214 | static ssize_t |
4be44fcd LB |
215 | acpi_system_write_alarm(struct file *file, |
216 | const char __user * buffer, size_t count, loff_t * ppos) | |
1da177e4 | 217 | { |
4be44fcd LB |
218 | int result = 0; |
219 | char alarm_string[30] = { '\0' }; | |
220 | char *p = alarm_string; | |
221 | u32 sec, min, hr, day, mo, yr; | |
222 | int adjust = 0; | |
223 | unsigned char rtc_control = 0; | |
1da177e4 LT |
224 | |
225 | ACPI_FUNCTION_TRACE("acpi_system_write_alarm"); | |
226 | ||
227 | if (count > sizeof(alarm_string) - 1) | |
228 | return_VALUE(-EINVAL); | |
4be44fcd | 229 | |
1da177e4 LT |
230 | if (copy_from_user(alarm_string, buffer, count)) |
231 | return_VALUE(-EFAULT); | |
232 | ||
233 | alarm_string[count] = '\0'; | |
234 | ||
235 | /* check for time adjustment */ | |
236 | if (alarm_string[0] == '+') { | |
237 | p++; | |
238 | adjust = 1; | |
239 | } | |
240 | ||
241 | if ((result = get_date_field(&p, &yr))) | |
242 | goto end; | |
243 | if ((result = get_date_field(&p, &mo))) | |
244 | goto end; | |
245 | if ((result = get_date_field(&p, &day))) | |
246 | goto end; | |
247 | if ((result = get_date_field(&p, &hr))) | |
248 | goto end; | |
249 | if ((result = get_date_field(&p, &min))) | |
250 | goto end; | |
251 | if ((result = get_date_field(&p, &sec))) | |
252 | goto end; | |
253 | ||
254 | if (sec > 59) { | |
255 | min += 1; | |
256 | sec -= 60; | |
257 | } | |
258 | if (min > 59) { | |
259 | hr += 1; | |
260 | min -= 60; | |
261 | } | |
262 | if (hr > 23) { | |
263 | day += 1; | |
264 | hr -= 24; | |
265 | } | |
266 | if (day > 31) { | |
267 | mo += 1; | |
268 | day -= 31; | |
269 | } | |
270 | if (mo > 12) { | |
271 | yr += 1; | |
272 | mo -= 12; | |
273 | } | |
274 | ||
275 | spin_lock_irq(&rtc_lock); | |
276 | ||
277 | rtc_control = CMOS_READ(RTC_CONTROL); | |
1da177e4 LT |
278 | |
279 | if (adjust) { | |
c67c36e4 LT |
280 | yr += cmos_bcd_read(RTC_YEAR, rtc_control); |
281 | mo += cmos_bcd_read(RTC_MONTH, rtc_control); | |
282 | day += cmos_bcd_read(RTC_DAY_OF_MONTH, rtc_control); | |
283 | hr += cmos_bcd_read(RTC_HOURS, rtc_control); | |
284 | min += cmos_bcd_read(RTC_MINUTES, rtc_control); | |
285 | sec += cmos_bcd_read(RTC_SECONDS, rtc_control); | |
1da177e4 LT |
286 | } |
287 | ||
288 | spin_unlock_irq(&rtc_lock); | |
289 | ||
1da177e4 LT |
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 | } | |
1da177e4 LT |
310 | |
311 | spin_lock_irq(&rtc_lock); | |
312 | /* | |
313 | * Disable alarm interrupt before setting alarm timer or else | |
314 | * when ACPI_EVENT_RTC is enabled, a spurious ACPI interrupt occurs | |
315 | */ | |
316 | rtc_control &= ~RTC_AIE; | |
317 | CMOS_WRITE(rtc_control, RTC_CONTROL); | |
318 | CMOS_READ(RTC_INTR_FLAGS); | |
319 | ||
320 | /* write the fields the rtc knows about */ | |
c67c36e4 LT |
321 | cmos_bcd_write(hr, RTC_HOURS_ALARM, rtc_control); |
322 | cmos_bcd_write(min, RTC_MINUTES_ALARM, rtc_control); | |
323 | cmos_bcd_write(sec, RTC_SECONDS_ALARM, rtc_control); | |
1da177e4 LT |
324 | |
325 | /* | |
326 | * If the system supports an enhanced alarm it will have non-zero | |
327 | * offsets into the CMOS RAM here -- which for some reason are pointing | |
328 | * to the RTC area of memory. | |
329 | */ | |
ad71860a | 330 | if (acpi_gbl_FADT.day_alarm) |
c67c36e4 | 331 | cmos_bcd_write(day, acpi_gbl_FADT.day_alarm, rtc_control); |
ad71860a | 332 | if (acpi_gbl_FADT.month_alarm) |
c67c36e4 | 333 | cmos_bcd_write(mo, acpi_gbl_FADT.month_alarm, rtc_control); |
ad71860a | 334 | if (acpi_gbl_FADT.century) |
c67c36e4 | 335 | cmos_bcd_write(yr / 100, acpi_gbl_FADT.century, rtc_control); |
1da177e4 LT |
336 | /* enable the rtc alarm interrupt */ |
337 | rtc_control |= RTC_AIE; | |
338 | CMOS_WRITE(rtc_control, RTC_CONTROL); | |
339 | CMOS_READ(RTC_INTR_FLAGS); | |
340 | ||
341 | spin_unlock_irq(&rtc_lock); | |
342 | ||
343 | acpi_clear_event(ACPI_EVENT_RTC); | |
344 | acpi_enable_event(ACPI_EVENT_RTC, 0); | |
345 | ||
346 | *ppos += count; | |
347 | ||
348 | result = 0; | |
4be44fcd | 349 | end: |
1da177e4 LT |
350 | return_VALUE(result ? result : count); |
351 | } | |
fd350943 | 352 | #endif /* HAVE_ACPI_LEGACY_ALARM */ |
1da177e4 | 353 | |
4be44fcd | 354 | extern struct list_head acpi_wakeup_device_list; |
1da177e4 LT |
355 | extern spinlock_t acpi_device_lock; |
356 | ||
357 | static int | |
358 | acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset) | |
359 | { | |
4be44fcd | 360 | struct list_head *node, *next; |
1da177e4 | 361 | |
8aa55591 | 362 | seq_printf(seq, "Device\tS-state\t Status Sysfs node\n"); |
1da177e4 LT |
363 | |
364 | spin_lock(&acpi_device_lock); | |
365 | list_for_each_safe(node, next, &acpi_wakeup_device_list) { | |
4be44fcd LB |
366 | struct acpi_device *dev = |
367 | container_of(node, struct acpi_device, wakeup_list); | |
8aa55591 | 368 | struct device *ldev; |
1da177e4 LT |
369 | |
370 | if (!dev->wakeup.flags.valid) | |
371 | continue; | |
372 | spin_unlock(&acpi_device_lock); | |
8aa55591 DB |
373 | |
374 | ldev = acpi_get_physical_device(dev->handle); | |
375 | seq_printf(seq, "%s\t S%d\t%c%-8s ", | |
4be44fcd LB |
376 | dev->pnp.bus_id, |
377 | (u32) dev->wakeup.sleep_state, | |
8aa55591 | 378 | dev->wakeup.flags.run_wake ? '*' : ' ', |
c65ade4d | 379 | dev->wakeup.state.enabled ? "enabled" : "disabled"); |
8aa55591 DB |
380 | if (ldev) |
381 | seq_printf(seq, "%s:%s", | |
fd350943 LB |
382 | ldev->bus ? ldev->bus->name : "no-bus", |
383 | ldev->bus_id); | |
8aa55591 DB |
384 | seq_printf(seq, "\n"); |
385 | put_device(ldev); | |
386 | ||
1da177e4 LT |
387 | spin_lock(&acpi_device_lock); |
388 | } | |
389 | spin_unlock(&acpi_device_lock); | |
390 | return 0; | |
391 | } | |
392 | ||
393 | static ssize_t | |
4be44fcd LB |
394 | acpi_system_write_wakeup_device(struct file *file, |
395 | const char __user * buffer, | |
396 | size_t count, loff_t * ppos) | |
1da177e4 | 397 | { |
4be44fcd LB |
398 | struct list_head *node, *next; |
399 | char strbuf[5]; | |
400 | char str[5] = ""; | |
401 | int len = count; | |
1da177e4 LT |
402 | struct acpi_device *found_dev = NULL; |
403 | ||
4be44fcd LB |
404 | if (len > 4) |
405 | len = 4; | |
1da177e4 LT |
406 | |
407 | if (copy_from_user(strbuf, buffer, len)) | |
408 | return -EFAULT; | |
409 | strbuf[len] = '\0'; | |
410 | sscanf(strbuf, "%s", str); | |
411 | ||
412 | spin_lock(&acpi_device_lock); | |
413 | list_for_each_safe(node, next, &acpi_wakeup_device_list) { | |
4be44fcd LB |
414 | struct acpi_device *dev = |
415 | container_of(node, struct acpi_device, wakeup_list); | |
1da177e4 LT |
416 | if (!dev->wakeup.flags.valid) |
417 | continue; | |
418 | ||
419 | if (!strncmp(dev->pnp.bus_id, str, 4)) { | |
4be44fcd LB |
420 | dev->wakeup.state.enabled = |
421 | dev->wakeup.state.enabled ? 0 : 1; | |
1da177e4 LT |
422 | found_dev = dev; |
423 | break; | |
424 | } | |
425 | } | |
426 | if (found_dev) { | |
427 | list_for_each_safe(node, next, &acpi_wakeup_device_list) { | |
4be44fcd LB |
428 | struct acpi_device *dev = container_of(node, |
429 | struct | |
430 | acpi_device, | |
431 | wakeup_list); | |
1da177e4 LT |
432 | |
433 | if ((dev != found_dev) && | |
4be44fcd LB |
434 | (dev->wakeup.gpe_number == |
435 | found_dev->wakeup.gpe_number) | |
436 | && (dev->wakeup.gpe_device == | |
437 | found_dev->wakeup.gpe_device)) { | |
438 | printk(KERN_WARNING | |
439 | "ACPI: '%s' and '%s' have the same GPE, " | |
440 | "can't disable/enable one seperately\n", | |
441 | dev->pnp.bus_id, found_dev->pnp.bus_id); | |
442 | dev->wakeup.state.enabled = | |
443 | found_dev->wakeup.state.enabled; | |
1da177e4 LT |
444 | } |
445 | } | |
446 | } | |
447 | spin_unlock(&acpi_device_lock); | |
448 | return count; | |
449 | } | |
450 | ||
451 | static int | |
452 | acpi_system_wakeup_device_open_fs(struct inode *inode, struct file *file) | |
453 | { | |
4be44fcd LB |
454 | return single_open(file, acpi_system_wakeup_device_seq_show, |
455 | PDE(inode)->data); | |
1da177e4 LT |
456 | } |
457 | ||
d7508032 | 458 | static const struct file_operations acpi_system_wakeup_device_fops = { |
4be44fcd LB |
459 | .open = acpi_system_wakeup_device_open_fs, |
460 | .read = seq_read, | |
461 | .write = acpi_system_write_wakeup_device, | |
462 | .llseek = seq_lseek, | |
463 | .release = single_release, | |
1da177e4 LT |
464 | }; |
465 | ||
134c2171 | 466 | #ifdef CONFIG_ACPI_PROCFS |
d7508032 | 467 | static const struct file_operations acpi_system_sleep_fops = { |
4be44fcd LB |
468 | .open = acpi_system_sleep_open_fs, |
469 | .read = seq_read, | |
470 | .write = acpi_system_write_sleep, | |
471 | .llseek = seq_lseek, | |
472 | .release = single_release, | |
1da177e4 | 473 | }; |
134c2171 | 474 | #endif /* CONFIG_ACPI_PROCFS */ |
1da177e4 | 475 | |
f5f72b46 | 476 | #ifdef HAVE_ACPI_LEGACY_ALARM |
d7508032 | 477 | static const struct file_operations acpi_system_alarm_fops = { |
4be44fcd LB |
478 | .open = acpi_system_alarm_open_fs, |
479 | .read = seq_read, | |
480 | .write = acpi_system_write_alarm, | |
481 | .llseek = seq_lseek, | |
482 | .release = single_release, | |
1da177e4 LT |
483 | }; |
484 | ||
4be44fcd | 485 | static u32 rtc_handler(void *context) |
1da177e4 LT |
486 | { |
487 | acpi_clear_event(ACPI_EVENT_RTC); | |
488 | acpi_disable_event(ACPI_EVENT_RTC, 0); | |
489 | ||
490 | return ACPI_INTERRUPT_HANDLED; | |
491 | } | |
fd350943 | 492 | #endif /* HAVE_ACPI_LEGACY_ALARM */ |
1da177e4 | 493 | |
f5f72b46 | 494 | static int __init acpi_sleep_proc_init(void) |
1da177e4 | 495 | { |
c65ade4d | 496 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
497 | |
498 | if (acpi_disabled) | |
499 | return 0; | |
4be44fcd | 500 | |
134c2171 | 501 | #ifdef CONFIG_ACPI_PROCFS |
c65ade4d | 502 | /* 'sleep' [R/W] */ |
4be44fcd LB |
503 | entry = |
504 | create_proc_entry("sleep", S_IFREG | S_IRUGO | S_IWUSR, | |
505 | acpi_root_dir); | |
1da177e4 LT |
506 | if (entry) |
507 | entry->proc_fops = &acpi_system_sleep_fops; | |
43532c8a | 508 | #endif /* CONFIG_ACPI_PROCFS */ |
1da177e4 | 509 | |
f5f72b46 | 510 | #ifdef HAVE_ACPI_LEGACY_ALARM |
1da177e4 | 511 | /* 'alarm' [R/W] */ |
4be44fcd LB |
512 | entry = |
513 | create_proc_entry("alarm", S_IFREG | S_IRUGO | S_IWUSR, | |
514 | acpi_root_dir); | |
1da177e4 LT |
515 | if (entry) |
516 | entry->proc_fops = &acpi_system_alarm_fops; | |
517 | ||
f5f72b46 | 518 | acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL); |
fd350943 | 519 | #endif /* HAVE_ACPI_LEGACY_ALARM */ |
f5f72b46 | 520 | |
c65ade4d | 521 | /* 'wakeup device' [R/W] */ |
4be44fcd LB |
522 | entry = |
523 | create_proc_entry("wakeup", S_IFREG | S_IRUGO | S_IWUSR, | |
524 | acpi_root_dir); | |
1da177e4 LT |
525 | if (entry) |
526 | entry->proc_fops = &acpi_system_wakeup_device_fops; | |
527 | ||
1da177e4 LT |
528 | return 0; |
529 | } | |
530 | ||
531 | late_initcall(acpi_sleep_proc_init); |