forked from rubenslte/android_kernel_samsung_msm8226
Figo Wang
091c9afe14
Now we use type of RTC_WAKEUP for the poweroff alarm. Actually lots of other applications also use this type. But these applications never expect the device will power on after it has been shut down. So we need to add dedicated alarm type for the Deskclock or similar applications. CRs-fixed: 529674 Change-Id: I9b7911906446daa1aeb5835478c9837f8ef797f2 Signed-off-by: Figo Wang <figow@codeaurora.org>
111 lines
3.6 KiB
C
111 lines
3.6 KiB
C
/* include/linux/android_alarm.h
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*
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* Copyright (C) 2006-2007 Google, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _LINUX_ANDROID_ALARM_H
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#define _LINUX_ANDROID_ALARM_H
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#include <linux/ioctl.h>
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#include <linux/time.h>
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enum android_alarm_type {
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/* return code bit numbers or set alarm arg */
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ANDROID_ALARM_RTC_WAKEUP,
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ANDROID_ALARM_RTC,
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ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP,
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ANDROID_ALARM_ELAPSED_REALTIME,
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ANDROID_ALARM_RTC_POWEROFF_WAKEUP,
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ANDROID_ALARM_SYSTEMTIME,
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ANDROID_ALARM_TYPE_COUNT,
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/* return code bit numbers */
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/* ANDROID_ALARM_TIME_CHANGE = 16 */
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};
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#ifdef __KERNEL__
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#include <linux/ktime.h>
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#include <linux/rbtree.h>
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/*
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* The alarm interface is similar to the hrtimer interface but adds support
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* for wakeup from suspend. It also adds an elapsed realtime clock that can
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* be used for periodic timers that need to keep runing while the system is
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* suspended and not be disrupted when the wall time is set.
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*/
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/**
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* struct alarm - the basic alarm structure
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* @node: red black tree node for time ordered insertion
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* @type: alarm type. rtc/elapsed-realtime/systemtime, wakeup/non-wakeup.
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* @softexpires: the absolute earliest expiry time of the alarm.
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* @expires: the absolute expiry time.
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* @function: alarm expiry callback function
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*
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* The alarm structure must be initialized by alarm_init()
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*
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*/
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struct alarm {
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struct rb_node node;
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enum android_alarm_type type;
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ktime_t softexpires;
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ktime_t expires;
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void (*function)(struct alarm *);
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};
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void alarm_init(struct alarm *alarm,
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enum android_alarm_type type, void (*function)(struct alarm *));
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void alarm_start_range(struct alarm *alarm, ktime_t start, ktime_t end);
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int alarm_try_to_cancel(struct alarm *alarm);
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int alarm_cancel(struct alarm *alarm);
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void set_power_on_alarm(long secs);
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ktime_t alarm_get_elapsed_realtime(void);
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/* set rtc while preserving elapsed realtime */
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int alarm_set_rtc(const struct timespec ts);
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void alarm_update_timedelta(struct timespec tv, struct timespec ts);
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#endif
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enum android_alarm_return_flags {
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ANDROID_ALARM_RTC_WAKEUP_MASK = 1U << ANDROID_ALARM_RTC_WAKEUP,
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ANDROID_ALARM_RTC_MASK = 1U << ANDROID_ALARM_RTC,
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ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK =
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1U << ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP,
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ANDROID_ALARM_ELAPSED_REALTIME_MASK =
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1U << ANDROID_ALARM_ELAPSED_REALTIME,
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ANDROID_ALARM_RTC_POWEROFF_WAKEUP_MASK = 1U << ANDROID_ALARM_RTC_POWEROFF_WAKEUP,
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ANDROID_ALARM_SYSTEMTIME_MASK = 1U << ANDROID_ALARM_SYSTEMTIME,
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ANDROID_ALARM_TIME_CHANGE_MASK = 1U << 16
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};
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/* Disable alarm */
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#define ANDROID_ALARM_CLEAR(type) _IO('a', 0 | ((type) << 4))
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/* Ack last alarm and wait for next */
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#define ANDROID_ALARM_WAIT _IO('a', 1)
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#define ALARM_IOW(c, type, size) _IOW('a', (c) | ((type) << 4), size)
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/* Set alarm */
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#define ANDROID_ALARM_SET(type) ALARM_IOW(2, type, struct timespec)
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#define ANDROID_ALARM_SET_AND_WAIT(type) ALARM_IOW(3, type, struct timespec)
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#define ANDROID_ALARM_GET_TIME(type) ALARM_IOW(4, type, struct timespec)
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#define ANDROID_ALARM_SET_RTC _IOW('a', 5, struct timespec)
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#define ANDROID_ALARM_BASE_CMD(cmd) (cmd & ~(_IOC(0, 0, 0xf0, 0)))
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#define ANDROID_ALARM_IOCTL_TO_TYPE(cmd) (_IOC_NR(cmd) >> 4)
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#endif
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