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Diffstat (limited to 'kernel/time/alarmtimer.c')
-rw-r--r--kernel/time/alarmtimer.c145
1 files changed, 2 insertions, 143 deletions
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 271b37995a89..4ac0a040e4ef 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -29,7 +29,6 @@
#ifdef CONFIG_MSM_PM
#include "lpm-levels.h"
#endif
-#include <linux/workqueue.h>
/**
* struct alarm_base - Alarm timer bases
@@ -51,116 +50,12 @@ static ktime_t freezer_delta;
static DEFINE_SPINLOCK(freezer_delta_lock);
static struct wakeup_source *ws;
-static struct delayed_work work;
-static struct workqueue_struct *power_off_alarm_workqueue;
#ifdef CONFIG_RTC_CLASS
/* rtc timer and device for setting alarm wakeups at suspend */
static struct rtc_timer rtctimer;
static struct rtc_device *rtcdev;
static DEFINE_SPINLOCK(rtcdev_lock);
-static struct mutex power_on_alarm_lock;
-static struct alarm init_alarm;
-
-/**
- * power_on_alarm_init - Init power on alarm value
- *
- * Read rtc alarm value after device booting up and add this alarm
- * into alarm queue.
- */
-void power_on_alarm_init(void)
-{
- struct rtc_wkalrm rtc_alarm;
- struct rtc_time rt;
- unsigned long alarm_time;
- struct rtc_device *rtc;
- ktime_t alarm_ktime;
-
- rtc = alarmtimer_get_rtcdev();
-
- if (!rtc)
- return;
-
- rtc_read_alarm(rtc, &rtc_alarm);
- rt = rtc_alarm.time;
-
- rtc_tm_to_time(&rt, &alarm_time);
-
- if (alarm_time) {
- alarm_ktime = ktime_set(alarm_time, 0);
- alarm_init(&init_alarm, ALARM_POWEROFF_REALTIME, NULL);
- alarm_start(&init_alarm, alarm_ktime);
- }
-}
-
-/**
- * set_power_on_alarm - set power on alarm value into rtc register
- *
- * Get the soonest power off alarm timer and set the alarm value into rtc
- * register.
- */
-void set_power_on_alarm(void)
-{
- int rc;
- struct timespec wall_time, alarm_ts;
- long alarm_secs = 0l;
- long rtc_secs, alarm_time, alarm_delta;
- struct rtc_time rtc_time;
- struct rtc_wkalrm alarm;
- struct rtc_device *rtc;
- struct timerqueue_node *next;
- unsigned long flags;
- struct alarm_base *base = &alarm_bases[ALARM_POWEROFF_REALTIME];
-
- rc = mutex_lock_interruptible(&power_on_alarm_lock);
- if (rc != 0)
- return;
-
- spin_lock_irqsave(&base->lock, flags);
- next = timerqueue_getnext(&base->timerqueue);
- spin_unlock_irqrestore(&base->lock, flags);
-
- if (next) {
- alarm_ts = ktime_to_timespec(next->expires);
- alarm_secs = alarm_ts.tv_sec;
- }
-
- if (!alarm_secs)
- goto disable_alarm;
-
- getnstimeofday(&wall_time);
-
- /*
- * alarm_secs have to be bigger than "wall_time +1".
- * It is to make sure that alarm time will be always
- * bigger than wall time.
- */
- if (alarm_secs <= wall_time.tv_sec + 1)
- goto disable_alarm;
-
- rtc = alarmtimer_get_rtcdev();
- if (!rtc)
- goto exit;
-
- rtc_read_time(rtc, &rtc_time);
- rtc_tm_to_time(&rtc_time, &rtc_secs);
- alarm_delta = wall_time.tv_sec - rtc_secs;
- alarm_time = alarm_secs - alarm_delta;
-
- rtc_time_to_tm(alarm_time, &alarm.time);
- alarm.enabled = 1;
- rc = rtc_set_alarm(rtcdev, &alarm);
- if (rc)
- goto disable_alarm;
-
- mutex_unlock(&power_on_alarm_lock);
- return;
-
-disable_alarm:
- rtc_alarm_irq_enable(rtcdev, 0);
-exit:
- mutex_unlock(&power_on_alarm_lock);
-}
static void alarmtimer_triggered_func(void *p)
{
@@ -232,8 +127,6 @@ static void alarmtimer_rtc_remove_device(struct device *dev,
static inline void alarmtimer_rtc_timer_init(void)
{
- mutex_init(&power_on_alarm_lock);
-
rtc_timer_init(&rtctimer, NULL, NULL);
}
@@ -260,14 +153,8 @@ struct rtc_device *alarmtimer_get_rtcdev(void)
static inline int alarmtimer_rtc_interface_setup(void) { return 0; }
static inline void alarmtimer_rtc_interface_remove(void) { }
static inline void alarmtimer_rtc_timer_init(void) { }
-void set_power_on_alarm(void) { }
#endif
-static void alarm_work_func(struct work_struct *unused)
-{
- set_power_on_alarm();
-}
-
/**
* alarmtimer_enqueue - Adds an alarm timer to an alarm_base timerqueue
* @base: pointer to the base where the timer is being run
@@ -337,10 +224,6 @@ static enum hrtimer_restart alarmtimer_fired(struct hrtimer *timer)
}
spin_unlock_irqrestore(&base->lock, flags);
- /* set next power off alarm */
- if (alarm->type == ALARM_POWEROFF_REALTIME)
- queue_delayed_work(power_off_alarm_workqueue, &work, 0);
-
return ret;
}
@@ -434,8 +317,6 @@ static int alarmtimer_suspend(struct device *dev)
int i;
int ret;
- cancel_delayed_work_sync(&work);
-
spin_lock_irqsave(&freezer_delta_lock, flags);
min = freezer_delta;
freezer_delta = ktime_set(0, 0);
@@ -492,7 +373,6 @@ static int alarmtimer_resume(struct device *dev)
return 0;
rtc_timer_cancel(rtc, &rtctimer);
- queue_delayed_work(power_off_alarm_workqueue, &work, 0);
return 0;
}
@@ -673,14 +553,12 @@ EXPORT_SYMBOL_GPL(alarm_forward_now);
* clock2alarm - helper that converts from clockid to alarmtypes
* @clockid: clockid.
*/
-enum alarmtimer_type clock2alarm(clockid_t clockid)
+static enum alarmtimer_type clock2alarm(clockid_t clockid)
{
if (clockid == CLOCK_REALTIME_ALARM)
return ALARM_REALTIME;
if (clockid == CLOCK_BOOTTIME_ALARM)
return ALARM_BOOTTIME;
- if (clockid == CLOCK_POWEROFF_ALARM)
- return ALARM_POWEROFF_REALTIME;
return -1;
}
@@ -1077,13 +955,10 @@ static int __init alarmtimer_init(void)
posix_timers_register_clock(CLOCK_REALTIME_ALARM, &alarm_clock);
posix_timers_register_clock(CLOCK_BOOTTIME_ALARM, &alarm_clock);
- posix_timers_register_clock(CLOCK_POWEROFF_ALARM, &alarm_clock);
/* Initialize alarm bases */
alarm_bases[ALARM_REALTIME].base_clockid = CLOCK_REALTIME;
alarm_bases[ALARM_REALTIME].gettime = &ktime_get_real;
- alarm_bases[ALARM_POWEROFF_REALTIME].base_clockid = CLOCK_REALTIME;
- alarm_bases[ALARM_POWEROFF_REALTIME].gettime = &ktime_get_real;
alarm_bases[ALARM_BOOTTIME].base_clockid = CLOCK_BOOTTIME;
alarm_bases[ALARM_BOOTTIME].gettime = &ktime_get_boottime;
for (i = 0; i < ALARM_NUMTYPE; i++) {
@@ -1105,24 +980,8 @@ static int __init alarmtimer_init(void)
goto out_drv;
}
ws = wakeup_source_register("alarmtimer");
- if (!ws) {
- error = -ENOMEM;
- goto out_ws;
- }
-
- INIT_DELAYED_WORK(&work, alarm_work_func);
- power_off_alarm_workqueue =
- create_singlethread_workqueue("power_off_alarm");
- if (!power_off_alarm_workqueue) {
- error = -ENOMEM;
- goto out_wq;
- }
-
return 0;
-out_wq:
- wakeup_source_unregister(ws);
-out_ws:
- platform_device_unregister(pdev);
+
out_drv:
platform_driver_unregister(&alarmtimer_driver);
out_if:
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-23 17:10:28 +0000