diff options
Diffstat (limited to 'drivers/acpi/glue.c')
| -rw-r--r-- | drivers/acpi/glue.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 3c578ef78c48..24649ada08df 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c | |||
| @@ -260,115 +260,3 @@ static int __init init_acpi_device_notify(void) | |||
| 260 | } | 260 | } |
| 261 | 261 | ||
| 262 | arch_initcall(init_acpi_device_notify); | 262 | arch_initcall(init_acpi_device_notify); |
| 263 | |||
| 264 | |||
| 265 | #if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) | ||
| 266 | |||
| 267 | #ifdef CONFIG_PM | ||
| 268 | static u32 rtc_handler(void *context) | ||
| 269 | { | ||
| 270 | acpi_clear_event(ACPI_EVENT_RTC); | ||
| 271 | acpi_disable_event(ACPI_EVENT_RTC, 0); | ||
| 272 | return ACPI_INTERRUPT_HANDLED; | ||
| 273 | } | ||
| 274 | |||
| 275 | static inline void rtc_wake_setup(void) | ||
| 276 | { | ||
| 277 | acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL); | ||
| 278 | /* | ||
| 279 | * After the RTC handler is installed, the Fixed_RTC event should | ||
| 280 | * be disabled. Only when the RTC alarm is set will it be enabled. | ||
| 281 | */ | ||
| 282 | acpi_clear_event(ACPI_EVENT_RTC); | ||
| 283 | acpi_disable_event(ACPI_EVENT_RTC, 0); | ||
| 284 | } | ||
| 285 | |||
| 286 | static void rtc_wake_on(struct device *dev) | ||
| 287 | { | ||
| 288 | acpi_clear_event(ACPI_EVENT_RTC); | ||
| 289 | acpi_enable_event(ACPI_EVENT_RTC, 0); | ||
| 290 | } | ||
| 291 | |||
| 292 | static void rtc_wake_off(struct device *dev) | ||
| 293 | { | ||
| 294 | acpi_disable_event(ACPI_EVENT_RTC, 0); | ||
| 295 | } | ||
| 296 | #else | ||
| 297 | #define rtc_wake_setup() do{}while(0) | ||
| 298 | #define rtc_wake_on NULL | ||
| 299 | #define rtc_wake_off NULL | ||
| 300 | #endif | ||
| 301 | |||
| 302 | /* Every ACPI platform has a mc146818 compatible "cmos rtc". Here we find | ||
| 303 | * its device node and pass extra config data. This helps its driver use | ||
| 304 | * capabilities that the now-obsolete mc146818 didn't have, and informs it | ||
| 305 | * that this board's RTC is wakeup-capable (per ACPI spec). | ||
| 306 | */ | ||
| 307 | #include <linux/mc146818rtc.h> | ||
| 308 | |||
| 309 | static struct cmos_rtc_board_info rtc_info; | ||
| 310 | |||
| 311 | |||
| 312 | /* PNP devices are registered in a subsys_initcall(); | ||
| 313 | * ACPI specifies the PNP IDs to use. | ||
| 314 | */ | ||
| 315 | #include <linux/pnp.h> | ||
| 316 | |||
| 317 | static int __init pnp_match(struct device *dev, void *data) | ||
| 318 | { | ||
| 319 | static const char *ids[] = { "PNP0b00", "PNP0b01", "PNP0b02", }; | ||
| 320 | struct pnp_dev *pnp = to_pnp_dev(dev); | ||
| 321 | int i; | ||
| 322 | |||
| 323 | for (i = 0; i < ARRAY_SIZE(ids); i++) { | ||
| 324 | if (compare_pnp_id(pnp->id, ids[i]) != 0) | ||
| 325 | return 1; | ||
| 326 | } | ||
| 327 | return 0; | ||
| 328 | } | ||
| 329 | |||
| 330 | static struct device *__init get_rtc_dev(void) | ||
| 331 | { | ||
| 332 | return bus_find_device(&pnp_bus_type, NULL, NULL, pnp_match); | ||
| 333 | } | ||
| 334 | |||
| 335 | static int __init acpi_rtc_init(void) | ||
| 336 | { | ||
| 337 | struct device *dev = get_rtc_dev(); | ||
| 338 | |||
| 339 | if (acpi_disabled) | ||
| 340 | return 0; | ||
| 341 | |||
| 342 | if (dev) { | ||
| 343 | rtc_wake_setup(); | ||
| 344 | rtc_info.wake_on = rtc_wake_on; | ||
| 345 | rtc_info.wake_off = rtc_wake_off; | ||
| 346 | |||
| 347 | /* workaround bug in some ACPI tables */ | ||
| 348 | if (acpi_gbl_FADT.month_alarm && !acpi_gbl_FADT.day_alarm) { | ||
| 349 | DBG("bogus FADT month_alarm\n"); | ||
| 350 | acpi_gbl_FADT.month_alarm = 0; | ||
| 351 | } | ||
| 352 | |||
| 353 | rtc_info.rtc_day_alarm = acpi_gbl_FADT.day_alarm; | ||
| 354 | rtc_info.rtc_mon_alarm = acpi_gbl_FADT.month_alarm; | ||
| 355 | rtc_info.rtc_century = acpi_gbl_FADT.century; | ||
| 356 | |||
| 357 | /* NOTE: S4_RTC_WAKE is NOT currently useful to Linux */ | ||
| 358 | if (acpi_gbl_FADT.flags & ACPI_FADT_S4_RTC_WAKE) | ||
| 359 | printk(PREFIX "RTC can wake from S4\n"); | ||
| 360 | |||
| 361 | |||
| 362 | dev->platform_data = &rtc_info; | ||
| 363 | |||
| 364 | /* RTC always wakes from S1/S2/S3, and often S4/STD */ | ||
| 365 | device_init_wakeup(dev, 1); | ||
| 366 | |||
| 367 | put_device(dev); | ||
| 368 | } else | ||
| 369 | DBG("RTC unavailable?\n"); | ||
| 370 | return 0; | ||
| 371 | } | ||
| 372 | module_init(acpi_rtc_init); | ||
| 373 | |||
| 374 | #endif | ||
