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/*
* cyber - Add CYBER to your system
* Copyright (C) 2017 Felix Morgner
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "cyber.h"
#include "cyber_device.h"
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/module.h>
extern struct cyber_device device;
extern struct file_operations const cyber_operations;
int cyber_device_init_character_device(void)
{
int error = 0;
if((error = alloc_chrdev_region(&device.number, 0, 1, DEV_NAME)))
{
printk(KERN_ALERT DEV_NAME ": Failed to allocate character device!\n");
}
cdev_init(&device.character, &cyber_operations);
device.character.owner = THIS_MODULE;
device.character.ops = &cyber_operations;
if((error = cdev_add(&device.character, device.number, 1)))
{
printk(KERN_ALERT DEV_NAME ": Failed to add character device (Error: %d)!\n", error);
}
return error;
}
void cyber_device_shutdown_character_device(void)
{
cdev_del(&device.character);
unregister_chrdev_region(device.number, 1);
}
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