93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
/*
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* /drivers/rtc/power-on-alarm.c
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*
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* Copyright (C) 2015 Samsung Electronics
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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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#include <linux/time.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/miscdevice.h>
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#include <linux/fs.h>
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#include <linux/platform_device.h>
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#include <linux/sched.h>
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#include <linux/spinlock.h>
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#include <linux/uaccess.h>
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#include <linux/alarmtimer.h>
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#include <linux/ioctl.h>
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#define ANDROID_ALARM_BASE_CMD(cmd) (cmd & ~(_IOC(0, 0, 0xf0, 0)))
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#define ANDROID_ALARM_SET_ALARM_BOOT _IOW('a', 7, struct timespec)
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static long power_on_alarm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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int rv;
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char bootalarm_data[14];
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switch (ANDROID_ALARM_BASE_CMD(cmd)) {
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case ANDROID_ALARM_SET_ALARM_BOOT:
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if (copy_from_user(bootalarm_data, (void __user *)arg, 14)) {
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rv = -EFAULT;
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return rv;
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}
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rv = alarm_set_alarm(bootalarm_data);
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break;
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}
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return 0;
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}
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static int power_on_alarm_open(struct inode *inode, struct file *file)
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{
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file->private_data = NULL;
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return 0;
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}
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static int power_on_alarm_release(struct inode *inode, struct file *file)
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{
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return 0;
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}
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static const struct file_operations power_on_alarm_fops = {
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.owner = THIS_MODULE,
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.unlocked_ioctl = power_on_alarm_ioctl,
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.open = power_on_alarm_open,
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.release = power_on_alarm_release,
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};
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static struct miscdevice power_on_alarm_device = {
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.minor = MISC_DYNAMIC_MINOR,
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.name = "power_on_alarm",
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.fops = &power_on_alarm_fops,
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};
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static int __init power_on_alarm_dev_init(void)
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{
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int err;
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err = misc_register(&power_on_alarm_device);
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if (err)
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return err;
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return 0;
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}
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static void __exit power_on_alarm_dev_exit(void)
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{
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misc_deregister(&power_on_alarm_device);
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}
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module_init(power_on_alarm_dev_init);
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module_exit(power_on_alarm_dev_exit);
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