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Commit ef2353d2 authored by John Stultz's avatar John Stultz Committed by Greg Kroah-Hartman
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android-alarm: Remove unused android alarm in-kernel interfaces 

Now that alarm-dev.c uses the upstreamed alarmtimer interfaces,
we can remove the otherwise unused in-kernel android alarm api.

CC: Colin Cross <ccross@android.com>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b8793260
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Showing with 2 additions and 645 deletions
drivers/staging/android/Kconfig
View file @ ef2353d2
......@@ -54,31 +54,14 @@ config ANDROID_LOW_MEMORY_KILLER
source "drivers/staging/android/switch/Kconfig"
config ANDROID_INTF_ALARM
config ANDROID_INTF_ALARM_DEV
bool "Android alarm driver"
depends on RTC_CLASS
default n
help
Provides non-wakeup and rtc backed wakeup alarms based on rtc or
elapsed realtime, and a non-wakeup alarm on the monotonic clock.
Also provides an interface to set the wall time which must be used
for elapsed realtime to work.
config ANDROID_INTF_ALARM_DEV
bool "Android alarm device"
depends on ANDROID_INTF_ALARM
default y
help
Exports the alarm interface to user-space.
config ANDROID_ALARM_OLDDRV_COMPAT
bool "Android Alarm compatability with old drivers"
depends on ANDROID_INTF_ALARM
default n
help
Provides preprocessor alias to aid compatability with
older out-of-tree drivers that use the Android Alarm
in-kernel API. This will be removed eventually.
Also exports the alarm interface to user-space.
endif # if ANDROID
......
drivers/staging/android/Makefile
View file @ ef2353d2
......@@ -7,5 +7,4 @@ obj-$(CONFIG_ANDROID_TIMED_OUTPUT) += timed_output.o
obj-$(CONFIG_ANDROID_TIMED_GPIO) += timed_gpio.o
obj-$(CONFIG_ANDROID_LOW_MEMORY_KILLER) += lowmemorykiller.o
obj-$(CONFIG_ANDROID_SWITCH) += switch/
obj-$(CONFIG_ANDROID_INTF_ALARM) += alarm.o
obj-$(CONFIG_ANDROID_INTF_ALARM_DEV) += alarm-dev.o
drivers/staging/android/alarm.c deleted 100644 → 0
View file @ b8793260
/* drivers/rtc/alarm.c
*
* Copyright (C) 2007-2009 Google, Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/time.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/miscdevice.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include "android_alarm.h"
/* XXX - Hack out wakelocks, while they are out of tree */
struct wake_lock {
int i;
};
#define wake_lock(x)
#define wake_lock_timeout(x, y)
#define wake_unlock(x)
#define WAKE_LOCK_SUSPEND 0
#define wake_lock_init(x, y, z) ((x)->i = 1)
#define wake_lock_destroy(x)
#define ANDROID_ALARM_PRINT_ERROR (1U << 0)
#define ANDROID_ALARM_PRINT_INIT_STATUS (1U << 1)
#define ANDROID_ALARM_PRINT_TSET (1U << 2)
#define ANDROID_ALARM_PRINT_CALL (1U << 3)
#define ANDROID_ALARM_PRINT_SUSPEND (1U << 4)
#define ANDROID_ALARM_PRINT_INT (1U << 5)
#define ANDROID_ALARM_PRINT_FLOW (1U << 6)
static int debug_mask = ANDROID_ALARM_PRINT_ERROR | \
ANDROID_ALARM_PRINT_INIT_STATUS;
module_param_named(debug_mask, debug_mask, int, S_IRUGO | S_IWUSR | S_IWGRP);
#define pr_alarm(debug_level_mask, args...) \
do { \
if (debug_mask & ANDROID_ALARM_PRINT_##debug_level_mask) { \
pr_info(args); \
} \
} while (0)
#define ANDROID_ALARM_WAKEUP_MASK ( \
ANDROID_ALARM_RTC_WAKEUP_MASK | \
ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK)
/* support old userspace code */
#define ANDROID_ALARM_SET_OLD _IOW('a', 2, time_t) /* set alarm */
#define ANDROID_ALARM_SET_AND_WAIT_OLD _IOW('a', 3, time_t)
struct alarm_queue {
struct rb_root alarms;
struct rb_node *first;
struct hrtimer timer;
bool stopped;
ktime_t stopped_time;
};
static struct rtc_device *alarm_rtc_dev;
static DEFINE_SPINLOCK(alarm_slock);
static DEFINE_MUTEX(alarm_setrtc_mutex);
static struct wake_lock alarm_rtc_wake_lock;
static struct platform_device *alarm_platform_dev;
struct alarm_queue alarms[ANDROID_ALARM_TYPE_COUNT];
static bool suspended;
static void update_timer_locked(struct alarm_queue *base, bool head_removed)
{
struct android_alarm *alarm;
bool is_wakeup = base == &alarms[ANDROID_ALARM_RTC_WAKEUP] ||
base == &alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP];
if (base->stopped) {
pr_alarm(FLOW, "changed alarm while setting the wall time\n");
return;
}
if (is_wakeup && !suspended && head_removed)
wake_unlock(&alarm_rtc_wake_lock);
if (!base->first)
return;
alarm = container_of(base->first, struct android_alarm, node);
pr_alarm(FLOW, "selected alarm, type %d, func %pF at %lld\n",
alarm->type, alarm->function, ktime_to_ns(alarm->expires));
if (is_wakeup && suspended) {
pr_alarm(FLOW, "changed alarm while suspened\n");
wake_lock_timeout(&alarm_rtc_wake_lock, 1 * HZ);
return;
}
hrtimer_try_to_cancel(&base->timer);
base->timer.node.expires = alarm->expires;
base->timer._softexpires = alarm->softexpires;
hrtimer_start_expires(&base->timer, HRTIMER_MODE_ABS);
}
static void alarm_enqueue_locked(struct android_alarm *alarm)
{
struct alarm_queue *base = &alarms[alarm->type];
struct rb_node **link = &base->alarms.rb_node;
struct rb_node *parent = NULL;
struct android_alarm *entry;
int leftmost = 1;
bool was_first = false;
pr_alarm(FLOW, "added alarm, type %d, func %pF at %lld\n",
alarm->type, alarm->function, ktime_to_ns(alarm->expires));
if (base->first == &alarm->node) {
base->first = rb_next(&alarm->node);
was_first = true;
}
if (!RB_EMPTY_NODE(&alarm->node)) {
rb_erase(&alarm->node, &base->alarms);
RB_CLEAR_NODE(&alarm->node);
}
while (*link) {
parent = *link;
entry = rb_entry(parent, struct android_alarm, node);
/*
* We dont care about collisions. Nodes with
* the same expiry time stay together.
*/
if (alarm->expires.tv64 < entry->expires.tv64) {
link = &(*link)->rb_left;
} else {
link = &(*link)->rb_right;
leftmost = 0;
}
}
if (leftmost)
base->first = &alarm->node;
if (leftmost || was_first)
update_timer_locked(base, was_first);
rb_link_node(&alarm->node, parent, link);
rb_insert_color(&alarm->node, &base->alarms);
}
/**
* android_alarm_init - initialize an alarm
* @alarm: the alarm to be initialized
* @type: the alarm type to be used
* @function: alarm callback function
*/
void android_alarm_init(struct android_alarm *alarm,
enum android_alarm_type type, void (*function)(struct android_alarm *))
{
RB_CLEAR_NODE(&alarm->node);
alarm->type = type;
alarm->function = function;
pr_alarm(FLOW, "created alarm, type %d, func %pF\n", type, function);
}
/**
* android_alarm_start_range - (re)start an alarm
* @alarm: the alarm to be added
* @start: earliest expiry time
* @end: expiry time
*/
void android_alarm_start_range(struct android_alarm *alarm, ktime_t start,
ktime_t end)
{
unsigned long flags;
spin_lock_irqsave(&alarm_slock, flags);
alarm->softexpires = start;
alarm->expires = end;
alarm_enqueue_locked(alarm);
spin_unlock_irqrestore(&alarm_slock, flags);
}
/**
* android_alarm_try_to_cancel - try to deactivate an alarm
* @alarm: alarm to stop
*
* Returns:
* 0 when the alarm was not active
* 1 when the alarm was active
* -1 when the alarm may currently be excuting the callback function and
* cannot be stopped (it may also be inactive)
*/
int android_alarm_try_to_cancel(struct android_alarm *alarm)
{
struct alarm_queue *base = &alarms[alarm->type];
unsigned long flags;
bool first = false;
int ret = 0;
spin_lock_irqsave(&alarm_slock, flags);
if (!RB_EMPTY_NODE(&alarm->node)) {
pr_alarm(FLOW, "canceled alarm, type %d, func %pF at %lld\n",
alarm->type, alarm->function,
ktime_to_ns(alarm->expires));
ret = 1;
if (base->first == &alarm->node) {
base->first = rb_next(&alarm->node);
first = true;
}
rb_erase(&alarm->node, &base->alarms);
RB_CLEAR_NODE(&alarm->node);
if (first)
update_timer_locked(base, true);
} else
pr_alarm(FLOW, "tried to cancel alarm, type %d, func %pF\n",
alarm->type, alarm->function);
spin_unlock_irqrestore(&alarm_slock, flags);
if (!ret && hrtimer_callback_running(&base->timer))
ret = -1;
return ret;
}
/**
* android_alarm_cancel - cancel an alarm and wait for the handler to finish.
* @alarm: the alarm to be cancelled
*
* Returns:
* 0 when the alarm was not active
* 1 when the alarm was active
*/
int android_alarm_cancel(struct android_alarm *alarm)
{
for (;;) {
int ret = android_alarm_try_to_cancel(alarm);
if (ret >= 0)
return ret;
cpu_relax();
}
}
/**
* alarm_set_rtc - set the kernel and rtc walltime
* @new_time: timespec value containing the new time
*/
int android_alarm_set_rtc(struct timespec new_time)
{
int i;
int ret;
unsigned long flags;
struct rtc_time rtc_new_rtc_time;
struct timespec tmp_time;
rtc_time_to_tm(new_time.tv_sec, &rtc_new_rtc_time);
pr_alarm(TSET, "set rtc %ld %ld - rtc %02d:%02d:%02d %02d/%02d/%04d\n",
new_time.tv_sec, new_time.tv_nsec,
rtc_new_rtc_time.tm_hour, rtc_new_rtc_time.tm_min,
rtc_new_rtc_time.tm_sec, rtc_new_rtc_time.tm_mon + 1,
rtc_new_rtc_time.tm_mday,
rtc_new_rtc_time.tm_year + 1900);
mutex_lock(&alarm_setrtc_mutex);
spin_lock_irqsave(&alarm_slock, flags);
wake_lock(&alarm_rtc_wake_lock);
getnstimeofday(&tmp_time);
for (i = 0; i < ANDROID_ALARM_SYSTEMTIME; i++) {
hrtimer_try_to_cancel(&alarms[i].timer);
alarms[i].stopped = true;
alarms[i].stopped_time = timespec_to_ktime(tmp_time);
}
spin_unlock_irqrestore(&alarm_slock, flags);
ret = do_settimeofday(&new_time);
spin_lock_irqsave(&alarm_slock, flags);
for (i = 0; i < ANDROID_ALARM_SYSTEMTIME; i++) {
alarms[i].stopped = false;
update_timer_locked(&alarms[i], false);
}
spin_unlock_irqrestore(&alarm_slock, flags);
if (ret < 0) {
pr_alarm(ERROR, "alarm_set_rtc: Failed to set time\n");
goto err;
}
if (!alarm_rtc_dev) {
pr_alarm(ERROR,
"alarm_set_rtc: no RTC, time will be lost on reboot\n");
goto err;
}
ret = rtc_set_time(alarm_rtc_dev, &rtc_new_rtc_time);
if (ret < 0)
pr_alarm(ERROR, "alarm_set_rtc: "
"Failed to set RTC, time will be lost on reboot\n");
err:
wake_unlock(&alarm_rtc_wake_lock);
mutex_unlock(&alarm_setrtc_mutex);
return ret;
}
static enum hrtimer_restart alarm_timer_triggered(struct hrtimer *timer)
{
struct alarm_queue *base;
struct android_alarm *alarm;
unsigned long flags;
ktime_t now;
spin_lock_irqsave(&alarm_slock, flags);
base = container_of(timer, struct alarm_queue, timer);
now = base->stopped ? base->stopped_time : hrtimer_cb_get_time(timer);
pr_alarm(INT, "alarm_timer_triggered type %td at %lld\n",
base - alarms, ktime_to_ns(now));
while (base->first) {
alarm = container_of(base->first, struct android_alarm, node);
if (alarm->softexpires.tv64 > now.tv64) {
pr_alarm(FLOW, "don't call alarm, %pF, %lld (s %lld)\n",
alarm->function, ktime_to_ns(alarm->expires),
ktime_to_ns(alarm->softexpires));
break;
}
base->first = rb_next(&alarm->node);
rb_erase(&alarm->node, &base->alarms);
RB_CLEAR_NODE(&alarm->node);
pr_alarm(CALL, "call alarm, type %d, func %pF, %lld (s %lld)\n",
alarm->type, alarm->function,
ktime_to_ns(alarm->expires),
ktime_to_ns(alarm->softexpires));
spin_unlock_irqrestore(&alarm_slock, flags);
alarm->function(alarm);
spin_lock_irqsave(&alarm_slock, flags);
}
if (!base->first)
pr_alarm(FLOW, "no more alarms of type %td\n", base - alarms);
update_timer_locked(base, true);
spin_unlock_irqrestore(&alarm_slock, flags);
return HRTIMER_NORESTART;
}
static void alarm_triggered_func(void *p)
{
struct rtc_device *rtc = alarm_rtc_dev;
if (!(rtc->irq_data & RTC_AF))
return;
pr_alarm(INT, "rtc alarm triggered\n");
wake_lock_timeout(&alarm_rtc_wake_lock, 1 * HZ);
}
static int alarm_suspend(struct platform_device *pdev, pm_message_t state)
{
int err = 0;
unsigned long flags;
struct rtc_wkalrm rtc_alarm;
struct rtc_time rtc_current_rtc_time;
unsigned long rtc_current_time;
unsigned long rtc_alarm_time;
struct timespec rtc_delta;
struct timespec wall_time;
struct alarm_queue *wakeup_queue = NULL;
struct alarm_queue *tmp_queue = NULL;
pr_alarm(SUSPEND, "alarm_suspend(%p, %d)\n", pdev, state.event);
spin_lock_irqsave(&alarm_slock, flags);
suspended = true;
spin_unlock_irqrestore(&alarm_slock, flags);
hrtimer_cancel(&alarms[ANDROID_ALARM_RTC_WAKEUP].timer);
hrtimer_cancel(&alarms[
ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP].timer);
tmp_queue = &alarms[ANDROID_ALARM_RTC_WAKEUP];
if (tmp_queue->first)
wakeup_queue = tmp_queue;
tmp_queue = &alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP];
if (tmp_queue->first && (!wakeup_queue ||
hrtimer_get_expires(&tmp_queue->timer).tv64 <
hrtimer_get_expires(&wakeup_queue->timer).tv64))
wakeup_queue = tmp_queue;
if (wakeup_queue) {
rtc_read_time(alarm_rtc_dev, &rtc_current_rtc_time);
getnstimeofday(&wall_time);
rtc_tm_to_time(&rtc_current_rtc_time, &rtc_current_time);
set_normalized_timespec(&rtc_delta,
wall_time.tv_sec - rtc_current_time,
wall_time.tv_nsec);
rtc_alarm_time = timespec_sub(ktime_to_timespec(
hrtimer_get_expires(&wakeup_queue->timer)),
rtc_delta).tv_sec;
rtc_time_to_tm(rtc_alarm_time, &rtc_alarm.time);
rtc_alarm.enabled = 1;
rtc_set_alarm(alarm_rtc_dev, &rtc_alarm);
rtc_read_time(alarm_rtc_dev, &rtc_current_rtc_time);
rtc_tm_to_time(&rtc_current_rtc_time, &rtc_current_time);
pr_alarm(SUSPEND,
"rtc alarm set at %ld, now %ld, rtc delta %ld.%09ld\n",
rtc_alarm_time, rtc_current_time,
rtc_delta.tv_sec, rtc_delta.tv_nsec);
if (rtc_current_time + 1 >= rtc_alarm_time) {
pr_alarm(SUSPEND, "alarm about to go off\n");
memset(&rtc_alarm, 0, sizeof(rtc_alarm));
rtc_alarm.enabled = 0;
rtc_set_alarm(alarm_rtc_dev, &rtc_alarm);
spin_lock_irqsave(&alarm_slock, flags);
suspended = false;
wake_lock_timeout(&alarm_rtc_wake_lock, 2 * HZ);
update_timer_locked(&alarms[ANDROID_ALARM_RTC_WAKEUP],
false);
update_timer_locked(&alarms[
ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP], false);
err = -EBUSY;
spin_unlock_irqrestore(&alarm_slock, flags);
}
}
return err;
}
static int alarm_resume(struct platform_device *pdev)
{
struct rtc_wkalrm alarm;
unsigned long flags;
pr_alarm(SUSPEND, "alarm_resume(%p)\n", pdev);
memset(&alarm, 0, sizeof(alarm));
alarm.enabled = 0;
rtc_set_alarm(alarm_rtc_dev, &alarm);
spin_lock_irqsave(&alarm_slock, flags);
suspended = false;
update_timer_locked(&alarms[ANDROID_ALARM_RTC_WAKEUP], false);
update_timer_locked(&alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP],
false);
spin_unlock_irqrestore(&alarm_slock, flags);
return 0;
}
static struct rtc_task alarm_rtc_task = {
.func = alarm_triggered_func
};
static int rtc_alarm_add_device(struct device *dev,
struct class_interface *class_intf)
{
int err;
struct rtc_device *rtc = to_rtc_device(dev);
mutex_lock(&alarm_setrtc_mutex);
if (alarm_rtc_dev) {
err = -EBUSY;
goto err1;
}
alarm_platform_dev =
platform_device_register_simple("alarm", -1, NULL, 0);
if (IS_ERR(alarm_platform_dev)) {
err = PTR_ERR(alarm_platform_dev);
goto err2;
}
err = rtc_irq_register(rtc, &alarm_rtc_task);
if (err)
goto err3;
alarm_rtc_dev = rtc;
pr_alarm(INIT_STATUS, "using rtc device, %s, for alarms", rtc->name);
mutex_unlock(&alarm_setrtc_mutex);
return 0;
err3:
platform_device_unregister(alarm_platform_dev);
err2:
err1:
mutex_unlock(&alarm_setrtc_mutex);
return err;
}
static void rtc_alarm_remove_device(struct device *dev,
struct class_interface *class_intf)
{
if (dev == &alarm_rtc_dev->dev) {
pr_alarm(INIT_STATUS, "lost rtc device for alarms");
rtc_irq_unregister(alarm_rtc_dev, &alarm_rtc_task);
platform_device_unregister(alarm_platform_dev);
alarm_rtc_dev = NULL;
}
}
static struct class_interface rtc_alarm_interface = {
.add_dev = &rtc_alarm_add_device,
.remove_dev = &rtc_alarm_remove_device,
};
static struct platform_driver alarm_driver = {
.suspend = alarm_suspend,
.resume = alarm_resume,
.driver = {
.name = "alarm"
}
};
static int __init alarm_driver_init(void)
{
int err;
int i;
hrtimer_init(&alarms[ANDROID_ALARM_RTC_WAKEUP].timer,
CLOCK_REALTIME, HRTIMER_MODE_ABS);
hrtimer_init(&alarms[ANDROID_ALARM_RTC].timer,
CLOCK_REALTIME, HRTIMER_MODE_ABS);
hrtimer_init(&alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP].timer,
CLOCK_BOOTTIME, HRTIMER_MODE_ABS);
hrtimer_init(&alarms[ANDROID_ALARM_ELAPSED_REALTIME].timer,
CLOCK_BOOTTIME, HRTIMER_MODE_ABS);
hrtimer_init(&alarms[ANDROID_ALARM_SYSTEMTIME].timer,
CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
for (i = 0; i < ANDROID_ALARM_TYPE_COUNT; i++)
alarms[i].timer.function = alarm_timer_triggered;
err = platform_driver_register(&alarm_driver);
if (err < 0)
goto err1;
wake_lock_init(&alarm_rtc_wake_lock, WAKE_LOCK_SUSPEND, "alarm_rtc");
rtc_alarm_interface.class = rtc_class;
err = class_interface_register(&rtc_alarm_interface);
if (err < 0)
goto err2;
return 0;
err2:
wake_lock_destroy(&alarm_rtc_wake_lock);
platform_driver_unregister(&alarm_driver);
err1:
return err;
}
static void __exit alarm_exit(void)
{
class_interface_unregister(&rtc_alarm_interface);
wake_lock_destroy(&alarm_rtc_wake_lock);
platform_driver_unregister(&alarm_driver);
}
module_init(alarm_driver_init);
module_exit(alarm_exit);
drivers/staging/android/android_alarm.h
View file @ ef2353d2
......@@ -33,70 +33,6 @@ enum android_alarm_type {
/* ANDROID_ALARM_TIME_CHANGE = 16 */
};
#ifdef __KERNEL__
#include <linux/ktime.h>
#include <linux/rbtree.h>
#include <linux/hrtimer.h>
/*
* The alarm interface is similar to the hrtimer interface but adds support
* for wakeup from suspend. It also adds an elapsed realtime clock that can
* be used for periodic timers that need to keep running while the system is
* suspended and not be disrupted when the wall time is set.
*/
/**
* struct alarm - the basic alarm structure
* @node: red black tree node for time ordered insertion
* @type: alarm type. rtc/elapsed-realtime/systemtime, wakeup/non-wakeup.
* @softexpires: the absolute earliest expiry time of the alarm.
* @expires: the absolute expiry time.
* @function: alarm expiry callback function
*
* The alarm structure must be initialized by alarm_init()
*
*/
struct android_alarm {
struct rb_node node;
enum android_alarm_type type;
ktime_t softexpires;
ktime_t expires;
void (*function)(struct android_alarm *);
};
void android_alarm_init(struct android_alarm *alarm,
enum android_alarm_type type, void (*function)(struct android_alarm *));
void android_alarm_start_range(struct android_alarm *alarm, ktime_t start,
ktime_t end);
int android_alarm_try_to_cancel(struct android_alarm *alarm);
int android_alarm_cancel(struct android_alarm *alarm);
static inline ktime_t alarm_get_elapsed_realtime(void)
{
return ktime_get_boottime();
}
/* set rtc while preserving elapsed realtime */
int android_alarm_set_rtc(const struct timespec ts);
#ifdef CONFIG_ANDROID_ALARM_OLDDRV_COMPAT
/*
* Some older drivers depend on the old API,
* so provide compatability macros for now.
*/
#define alarm android_alarm
#define alarm_init(x, y, z) android_alarm_init(x, y, z)
#define alarm_start_range(x, y, z) android_alarm_start_range(x, y, z)
#define alarm_try_to_cancel(x) android_alarm_try_to_cancel(x)
#define alarm_cancel(x) android_alarm_cancel(x)
#define alarm_set_rtc(x) android_alarm_set_rtc(x)
#endif
#endif
enum android_alarm_return_flags {
ANDROID_ALARM_RTC_WAKEUP_MASK = 1U << ANDROID_ALARM_RTC_WAKEUP,
ANDROID_ALARM_RTC_MASK = 1U << ANDROID_ALARM_RTC,
......
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