diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/glue.c | 37 | ||||
| -rw-r--r-- | drivers/acpi/sleep/proc.c | 19 |
2 files changed, 53 insertions, 3 deletions
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 4334c208841..83768e9cf29 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -245,6 +245,35 @@ arch_initcall(init_acpi_device_notify); #if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) +#ifdef CONFIG_PM +static u32 rtc_handler(void *context) +{ + acpi_clear_event(ACPI_EVENT_RTC); + acpi_disable_event(ACPI_EVENT_RTC, 0); + return ACPI_INTERRUPT_HANDLED; +} + +static inline void rtc_wake_setup(void) +{ + acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL); +} + +static void rtc_wake_on(struct device *dev) +{ + acpi_clear_event(ACPI_EVENT_RTC); + acpi_enable_event(ACPI_EVENT_RTC, 0); +} + +static void rtc_wake_off(struct device *dev) +{ + acpi_disable_event(ACPI_EVENT_RTC, 0); +} +#else +#define rtc_wake_setup() do{}while(0) +#define rtc_wake_on NULL +#define rtc_wake_off NULL +#endif + /* Every ACPI platform has a mc146818 compatible "cmos rtc". Here we find * its device node and pass extra config data. This helps its driver use * capabilities that the now-obsolete mc146818 didn't have, and informs it @@ -283,11 +312,17 @@ static int __init acpi_rtc_init(void) struct device *dev = get_rtc_dev(); if (dev) { + rtc_wake_setup(); + rtc_info.wake_on = rtc_wake_on; + rtc_info.wake_off = rtc_wake_off; + rtc_info.rtc_day_alarm = acpi_gbl_FADT.day_alarm; rtc_info.rtc_mon_alarm = acpi_gbl_FADT.month_alarm; rtc_info.rtc_century = acpi_gbl_FADT.century; - /* NOTE: acpi_gbl_FADT->rtcs4 is NOT currently useful */ + /* NOTE: S4_RTC_WAKE is NOT currently useful to Linux */ + if (acpi_gbl_FADT.flags & ACPI_FADT_S4_RTC_WAKE) + printk("ACPI: RTC can wake from S4\n"); dev->platform_data = &rtc_info; diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c index dcde9ddd105..5a76e5be61d 100644 --- a/drivers/acpi/sleep/proc.c +++ b/drivers/acpi/sleep/proc.c @@ -70,6 +70,14 @@ acpi_system_write_sleep(struct file *file, } #endif /* CONFIG_ACPI_SLEEP_PROC_SLEEP */ +#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) +/* use /sys/class/rtc/rtcX/wakealarm instead; it's not ACPI-specific */ +#else +#define HAVE_ACPI_LEGACY_ALARM +#endif + +#ifdef HAVE_ACPI_LEGACY_ALARM + static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset) { u32 sec, min, hr; @@ -341,6 +349,8 @@ acpi_system_write_alarm(struct file *file, end: return_VALUE(result ? result : count); } +#endif /* HAVE_ACPI_LEGACY_ALARM */ + extern struct list_head acpi_wakeup_device_list; extern spinlock_t acpi_device_lock; @@ -464,6 +474,7 @@ static const struct file_operations acpi_system_sleep_fops = { }; #endif /* CONFIG_ACPI_SLEEP_PROC_SLEEP */ +#ifdef HAVE_ACPI_LEGACY_ALARM static const struct file_operations acpi_system_alarm_fops = { .open = acpi_system_alarm_open_fs, .read = seq_read, @@ -479,8 +490,9 @@ static u32 rtc_handler(void *context) return ACPI_INTERRUPT_HANDLED; } +#endif /* HAVE_ACPI_LEGACY_ALARM */ -static int acpi_sleep_proc_init(void) +static int __init acpi_sleep_proc_init(void) { struct proc_dir_entry *entry = NULL; @@ -496,6 +508,7 @@ static int acpi_sleep_proc_init(void) entry->proc_fops = &acpi_system_sleep_fops; #endif +#ifdef HAVE_ACPI_LEGACY_ALARM /* 'alarm' [R/W] */ entry = create_proc_entry("alarm", S_IFREG | S_IRUGO | S_IWUSR, @@ -503,6 +516,9 @@ static int acpi_sleep_proc_init(void) if (entry) entry->proc_fops = &acpi_system_alarm_fops; + acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL); +#endif /* HAVE_ACPI_LEGACY_ALARM */ + /* 'wakeup device' [R/W] */ entry = create_proc_entry("wakeup", S_IFREG | S_IRUGO | S_IWUSR, @@ -510,7 +526,6 @@ static int acpi_sleep_proc_init(void) if (entry) entry->proc_fops = &acpi_system_wakeup_device_fops; - acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL); return 0; } |