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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>
#include <linux/string.h>
struct cyber_device device = {};
/**
* Initialize the sysfs CYBER device class
*
* @return zero on success, non-zero otherwise
*/
int cyber_device_init_device_class(void);
/**
* Shutdown the sysfs CYBER device class
*/
void cyber_device_shutdown_device_class(void);
/**
* Initialize the CYBER character device
*
* @return zero on success, non-zero otherwise
*/
int cyber_device_init_character_device(void);
/**
* Shutdown the CYBER character device
*/
void cyber_device_shutdown_character_device(void);
/**
* Initialize the CYBER kernel device
*
* @return zero on success, non-zero otherwise
*/
int cyber_device_init_kernel_device(void);
/**
* Shutdown the CYBER kernel device
*/
void cyber_device_shutdown_kernel_device(void);
int cyber_device_init(void)
{
int error = 0;
printk(KERN_INFO DEV_NAME ": Initializing CYBER device\n");
if((error = cyber_device_init_character_device()))
{
return error;
}
if((error = cyber_device_init_device_class()))
{
cyber_device_shutdown_character_device();
return error;
}
if((error = cyber_device_init_kernel_device()))
{
cyber_device_shutdown_character_device();
cyber_device_shutdown_device_class();
return error;
}
printk(KERN_INFO DEV_NAME ": New CYBER device with major %d minor %d\n", MAJOR(device.number), MINOR(device.number));
return error;
}
void cyber_device_shutdown(void)
{
printk(KERN_INFO DEV_NAME ": Shutting down CYBER device\n");
cyber_device_shutdown_kernel_device();
cyber_device_shutdown_device_class();
cyber_device_shutdown_character_device();
}
void cyber_device_release(struct device * device)
{
printk(KERN_INFO DEV_NAME ": Closing kernel CYBER device\n");
}
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