Commit | Line | Data |
---|---|---|
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) { | |
ab527d75 AB |
123 | sec = bcd2bin(sec); |
124 | min = bcd2bin(min); | |
125 | hr = bcd2bin(hr); | |
126 | day = bcd2bin(day); | |
127 | mo = bcd2bin(mo); | |
128 | yr = bcd2bin(yr); | |
129 | cent = bcd2bin(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 | */ | |
975c3025 SYY |
181 | if (*p == NULL) |
182 | return result; | |
183 | ||
1da177e4 LT |
184 | next = strpbrk(*p, "- :"); |
185 | if (next) | |
186 | *next++ = '\0'; | |
187 | ||
188 | *value = simple_strtoul(*p, &string_end, 10); | |
189 | ||
190 | /* Signal success if we got a good digit */ | |
191 | if (string_end != *p) | |
192 | result = 0; | |
193 | ||
194 | if (next) | |
195 | *p = next; | |
975c3025 SYY |
196 | else |
197 | *p = NULL; | |
1da177e4 LT |
198 | |
199 | return result; | |
200 | } | |
201 | ||
c67c36e4 LT |
202 | /* Read a possibly BCD register, always return binary */ |
203 | static u32 cmos_bcd_read(int offset, int rtc_control) | |
204 | { | |
205 | u32 val = CMOS_READ(offset); | |
206 | if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) | |
ab527d75 | 207 | val = bcd2bin(val); |
c67c36e4 LT |
208 | return val; |
209 | } | |
210 | ||
211 | /* Write binary value into possibly BCD register */ | |
212 | static void cmos_bcd_write(u32 val, int offset, int rtc_control) | |
213 | { | |
214 | if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) | |
ab527d75 | 215 | val = bin2bcd(val); |
c67c36e4 LT |
216 | CMOS_WRITE(val, offset); |
217 | } | |
218 | ||
1da177e4 | 219 | static ssize_t |
4be44fcd LB |
220 | acpi_system_write_alarm(struct file *file, |
221 | const char __user * buffer, size_t count, loff_t * ppos) | |
1da177e4 | 222 | { |
4be44fcd LB |
223 | int result = 0; |
224 | char alarm_string[30] = { '\0' }; | |
225 | char *p = alarm_string; | |
226 | u32 sec, min, hr, day, mo, yr; | |
227 | int adjust = 0; | |
228 | unsigned char rtc_control = 0; | |
1da177e4 LT |
229 | |
230 | ACPI_FUNCTION_TRACE("acpi_system_write_alarm"); | |
231 | ||
232 | if (count > sizeof(alarm_string) - 1) | |
233 | return_VALUE(-EINVAL); | |
4be44fcd | 234 | |
1da177e4 LT |
235 | if (copy_from_user(alarm_string, buffer, count)) |
236 | return_VALUE(-EFAULT); | |
237 | ||
238 | alarm_string[count] = '\0'; | |
239 | ||
240 | /* check for time adjustment */ | |
241 | if (alarm_string[0] == '+') { | |
242 | p++; | |
243 | adjust = 1; | |
244 | } | |
245 | ||
246 | if ((result = get_date_field(&p, &yr))) | |
247 | goto end; | |
248 | if ((result = get_date_field(&p, &mo))) | |
249 | goto end; | |
250 | if ((result = get_date_field(&p, &day))) | |
251 | goto end; | |
252 | if ((result = get_date_field(&p, &hr))) | |
253 | goto end; | |
254 | if ((result = get_date_field(&p, &min))) | |
255 | goto end; | |
256 | if ((result = get_date_field(&p, &sec))) | |
257 | goto end; | |
258 | ||
1da177e4 LT |
259 | spin_lock_irq(&rtc_lock); |
260 | ||
261 | rtc_control = CMOS_READ(RTC_CONTROL); | |
1da177e4 LT |
262 | |
263 | if (adjust) { | |
c67c36e4 LT |
264 | yr += cmos_bcd_read(RTC_YEAR, rtc_control); |
265 | mo += cmos_bcd_read(RTC_MONTH, rtc_control); | |
266 | day += cmos_bcd_read(RTC_DAY_OF_MONTH, rtc_control); | |
267 | hr += cmos_bcd_read(RTC_HOURS, rtc_control); | |
268 | min += cmos_bcd_read(RTC_MINUTES, rtc_control); | |
269 | sec += cmos_bcd_read(RTC_SECONDS, rtc_control); | |
1da177e4 LT |
270 | } |
271 | ||
272 | spin_unlock_irq(&rtc_lock); | |
273 | ||
1da177e4 | 274 | if (sec > 59) { |
08798029 YY |
275 | min += sec/60; |
276 | sec = sec%60; | |
1da177e4 LT |
277 | } |
278 | if (min > 59) { | |
08798029 YY |
279 | hr += min/60; |
280 | min = min%60; | |
1da177e4 LT |
281 | } |
282 | if (hr > 23) { | |
08798029 YY |
283 | day += hr/24; |
284 | hr = hr%24; | |
1da177e4 LT |
285 | } |
286 | if (day > 31) { | |
08798029 YY |
287 | mo += day/32; |
288 | day = day%32; | |
1da177e4 LT |
289 | } |
290 | if (mo > 12) { | |
08798029 YY |
291 | yr += mo/13; |
292 | mo = mo%13; | |
1da177e4 | 293 | } |
1da177e4 LT |
294 | |
295 | spin_lock_irq(&rtc_lock); | |
296 | /* | |
297 | * Disable alarm interrupt before setting alarm timer or else | |
298 | * when ACPI_EVENT_RTC is enabled, a spurious ACPI interrupt occurs | |
299 | */ | |
300 | rtc_control &= ~RTC_AIE; | |
301 | CMOS_WRITE(rtc_control, RTC_CONTROL); | |
302 | CMOS_READ(RTC_INTR_FLAGS); | |
303 | ||
304 | /* write the fields the rtc knows about */ | |
c67c36e4 LT |
305 | cmos_bcd_write(hr, RTC_HOURS_ALARM, rtc_control); |
306 | cmos_bcd_write(min, RTC_MINUTES_ALARM, rtc_control); | |
307 | cmos_bcd_write(sec, RTC_SECONDS_ALARM, rtc_control); | |
1da177e4 LT |
308 | |
309 | /* | |
310 | * If the system supports an enhanced alarm it will have non-zero | |
311 | * offsets into the CMOS RAM here -- which for some reason are pointing | |
312 | * to the RTC area of memory. | |
313 | */ | |
ad71860a | 314 | if (acpi_gbl_FADT.day_alarm) |
c67c36e4 | 315 | cmos_bcd_write(day, acpi_gbl_FADT.day_alarm, rtc_control); |
ad71860a | 316 | if (acpi_gbl_FADT.month_alarm) |
c67c36e4 | 317 | cmos_bcd_write(mo, acpi_gbl_FADT.month_alarm, rtc_control); |
cce3ce89 HC |
318 | if (acpi_gbl_FADT.century) { |
319 | if (adjust) | |
320 | yr += cmos_bcd_read(acpi_gbl_FADT.century, rtc_control) * 100; | |
c67c36e4 | 321 | cmos_bcd_write(yr / 100, acpi_gbl_FADT.century, rtc_control); |
cce3ce89 | 322 | } |
1da177e4 LT |
323 | /* enable the rtc alarm interrupt */ |
324 | rtc_control |= RTC_AIE; | |
325 | CMOS_WRITE(rtc_control, RTC_CONTROL); | |
326 | CMOS_READ(RTC_INTR_FLAGS); | |
327 | ||
328 | spin_unlock_irq(&rtc_lock); | |
329 | ||
330 | acpi_clear_event(ACPI_EVENT_RTC); | |
331 | acpi_enable_event(ACPI_EVENT_RTC, 0); | |
332 | ||
333 | *ppos += count; | |
334 | ||
335 | result = 0; | |
4be44fcd | 336 | end: |
1da177e4 LT |
337 | return_VALUE(result ? result : count); |
338 | } | |
fd350943 | 339 | #endif /* HAVE_ACPI_LEGACY_ALARM */ |
1da177e4 | 340 | |
4be44fcd | 341 | extern struct list_head acpi_wakeup_device_list; |
1da177e4 LT |
342 | extern spinlock_t acpi_device_lock; |
343 | ||
344 | static int | |
345 | acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset) | |
346 | { | |
4be44fcd | 347 | struct list_head *node, *next; |
1da177e4 | 348 | |
8aa55591 | 349 | seq_printf(seq, "Device\tS-state\t Status Sysfs node\n"); |
1da177e4 LT |
350 | |
351 | spin_lock(&acpi_device_lock); | |
352 | list_for_each_safe(node, next, &acpi_wakeup_device_list) { | |
4be44fcd LB |
353 | struct acpi_device *dev = |
354 | container_of(node, struct acpi_device, wakeup_list); | |
8aa55591 | 355 | struct device *ldev; |
1da177e4 LT |
356 | |
357 | if (!dev->wakeup.flags.valid) | |
358 | continue; | |
359 | spin_unlock(&acpi_device_lock); | |
8aa55591 DB |
360 | |
361 | ldev = acpi_get_physical_device(dev->handle); | |
362 | seq_printf(seq, "%s\t S%d\t%c%-8s ", | |
4be44fcd LB |
363 | dev->pnp.bus_id, |
364 | (u32) dev->wakeup.sleep_state, | |
8aa55591 | 365 | dev->wakeup.flags.run_wake ? '*' : ' ', |
c65ade4d | 366 | dev->wakeup.state.enabled ? "enabled" : "disabled"); |
8aa55591 DB |
367 | if (ldev) |
368 | seq_printf(seq, "%s:%s", | |
0794469d KS |
369 | dev_name(ldev) ? ldev->bus->name : "no-bus", |
370 | dev_name(ldev)); | |
8aa55591 DB |
371 | seq_printf(seq, "\n"); |
372 | put_device(ldev); | |
373 | ||
1da177e4 LT |
374 | spin_lock(&acpi_device_lock); |
375 | } | |
376 | spin_unlock(&acpi_device_lock); | |
377 | return 0; | |
378 | } | |
379 | ||
76acae04 RW |
380 | static void physical_device_enable_wakeup(struct acpi_device *adev) |
381 | { | |
382 | struct device *dev = acpi_get_physical_device(adev->handle); | |
383 | ||
384 | if (dev && device_can_wakeup(dev)) | |
385 | device_set_wakeup_enable(dev, adev->wakeup.state.enabled); | |
386 | } | |
387 | ||
1da177e4 | 388 | static ssize_t |
4be44fcd LB |
389 | acpi_system_write_wakeup_device(struct file *file, |
390 | const char __user * buffer, | |
391 | size_t count, loff_t * ppos) | |
1da177e4 | 392 | { |
4be44fcd LB |
393 | struct list_head *node, *next; |
394 | char strbuf[5]; | |
395 | char str[5] = ""; | |
396 | int len = count; | |
1da177e4 LT |
397 | struct acpi_device *found_dev = NULL; |
398 | ||
4be44fcd LB |
399 | if (len > 4) |
400 | len = 4; | |
1da177e4 LT |
401 | |
402 | if (copy_from_user(strbuf, buffer, len)) | |
403 | return -EFAULT; | |
404 | strbuf[len] = '\0'; | |
405 | sscanf(strbuf, "%s", str); | |
406 | ||
407 | spin_lock(&acpi_device_lock); | |
408 | list_for_each_safe(node, next, &acpi_wakeup_device_list) { | |
4be44fcd LB |
409 | struct acpi_device *dev = |
410 | container_of(node, struct acpi_device, wakeup_list); | |
1da177e4 LT |
411 | if (!dev->wakeup.flags.valid) |
412 | continue; | |
413 | ||
414 | if (!strncmp(dev->pnp.bus_id, str, 4)) { | |
4be44fcd LB |
415 | dev->wakeup.state.enabled = |
416 | dev->wakeup.state.enabled ? 0 : 1; | |
1da177e4 LT |
417 | found_dev = dev; |
418 | break; | |
419 | } | |
420 | } | |
421 | if (found_dev) { | |
76acae04 | 422 | physical_device_enable_wakeup(found_dev); |
1da177e4 | 423 | list_for_each_safe(node, next, &acpi_wakeup_device_list) { |
4be44fcd LB |
424 | struct acpi_device *dev = container_of(node, |
425 | struct | |
426 | acpi_device, | |
427 | wakeup_list); | |
1da177e4 LT |
428 | |
429 | if ((dev != found_dev) && | |
4be44fcd LB |
430 | (dev->wakeup.gpe_number == |
431 | found_dev->wakeup.gpe_number) | |
432 | && (dev->wakeup.gpe_device == | |
433 | found_dev->wakeup.gpe_device)) { | |
434 | printk(KERN_WARNING | |
435 | "ACPI: '%s' and '%s' have the same GPE, " | |
436 | "can't disable/enable one seperately\n", | |
437 | dev->pnp.bus_id, found_dev->pnp.bus_id); | |
438 | dev->wakeup.state.enabled = | |
439 | found_dev->wakeup.state.enabled; | |
76acae04 | 440 | physical_device_enable_wakeup(dev); |
1da177e4 LT |
441 | } |
442 | } | |
443 | } | |
444 | spin_unlock(&acpi_device_lock); | |
445 | return count; | |
446 | } | |
447 | ||
448 | static int | |
449 | acpi_system_wakeup_device_open_fs(struct inode *inode, struct file *file) | |
450 | { | |
4be44fcd LB |
451 | return single_open(file, acpi_system_wakeup_device_seq_show, |
452 | PDE(inode)->data); | |
1da177e4 LT |
453 | } |
454 | ||
d7508032 | 455 | static const struct file_operations acpi_system_wakeup_device_fops = { |
cf7acfab | 456 | .owner = THIS_MODULE, |
4be44fcd LB |
457 | .open = acpi_system_wakeup_device_open_fs, |
458 | .read = seq_read, | |
459 | .write = acpi_system_write_wakeup_device, | |
460 | .llseek = seq_lseek, | |
461 | .release = single_release, | |
1da177e4 LT |
462 | }; |
463 | ||
134c2171 | 464 | #ifdef CONFIG_ACPI_PROCFS |
d7508032 | 465 | static const struct file_operations acpi_system_sleep_fops = { |
cf7acfab | 466 | .owner = THIS_MODULE, |
4be44fcd LB |
467 | .open = acpi_system_sleep_open_fs, |
468 | .read = seq_read, | |
469 | .write = acpi_system_write_sleep, | |
470 | .llseek = seq_lseek, | |
471 | .release = single_release, | |
1da177e4 | 472 | }; |
134c2171 | 473 | #endif /* CONFIG_ACPI_PROCFS */ |
1da177e4 | 474 | |
f5f72b46 | 475 | #ifdef HAVE_ACPI_LEGACY_ALARM |
d7508032 | 476 | static const struct file_operations acpi_system_alarm_fops = { |
cf7acfab | 477 | .owner = THIS_MODULE, |
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 | { |
1da177e4 LT |
496 | if (acpi_disabled) |
497 | return 0; | |
4be44fcd | 498 | |
134c2171 | 499 | #ifdef CONFIG_ACPI_PROCFS |
c65ade4d | 500 | /* 'sleep' [R/W] */ |
cf7acfab DL |
501 | proc_create("sleep", S_IFREG | S_IRUGO | S_IWUSR, |
502 | acpi_root_dir, &acpi_system_sleep_fops); | |
43532c8a | 503 | #endif /* CONFIG_ACPI_PROCFS */ |
1da177e4 | 504 | |
f5f72b46 | 505 | #ifdef HAVE_ACPI_LEGACY_ALARM |
1da177e4 | 506 | /* 'alarm' [R/W] */ |
cf7acfab DL |
507 | proc_create("alarm", S_IFREG | S_IRUGO | S_IWUSR, |
508 | acpi_root_dir, &acpi_system_alarm_fops); | |
1da177e4 | 509 | |
f5f72b46 | 510 | acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL); |
e1094bfa ZY |
511 | /* |
512 | * Disable the RTC event after installing RTC handler. | |
513 | * Only when RTC alarm is set will it be enabled. | |
514 | */ | |
515 | acpi_clear_event(ACPI_EVENT_RTC); | |
516 | acpi_disable_event(ACPI_EVENT_RTC, 0); | |
fd350943 | 517 | #endif /* HAVE_ACPI_LEGACY_ALARM */ |
f5f72b46 | 518 | |
c65ade4d | 519 | /* 'wakeup device' [R/W] */ |
cf7acfab DL |
520 | proc_create("wakeup", S_IFREG | S_IRUGO | S_IWUSR, |
521 | acpi_root_dir, &acpi_system_wakeup_device_fops); | |
1da177e4 | 522 | |
1da177e4 LT |
523 | return 0; |
524 | } | |
525 | ||
526 | late_initcall(acpi_sleep_proc_init); |