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/* /driver/sensors/core/sensors_core.c
* Copyright (C) 2011 Samsung Electronics. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/fs.h>
#include <linux/err.h>
struct class *sensors_class;
EXPORT_SYMBOL_GPL(sensors_class);
/**
* Create sysfs interface
*/
static void set_sensor_attr(struct device *dev,
struct device_attribute *attributes[])
{
int i;
for (i = 0 ; attributes[i] != NULL ; i++) {
if ((device_create_file(dev, attributes[i])) < 0)
pr_err("Create_dev_file fail(attributes[%d] )\n", i);
}
}
int sensors_register(struct device *dev, void * drvdata,
struct device_attribute *attributes[], char *name)
{
int ret = 0;
if (!sensors_class) {
sensors_class = class_create(THIS_MODULE, "sensors");
if (IS_ERR(sensors_class))
return PTR_ERR(sensors_class);
}
dev = device_create(sensors_class, NULL, 0, drvdata, "%s", name);
if (IS_ERR(dev)) {
ret = PTR_ERR(dev);
pr_err("[SENSORS CORE] device_create failed! [%d]\n", ret);
return ret;
}
set_sensor_attr(dev, attributes);
return 0;
}
EXPORT_SYMBOL_GPL(sensors_register);
void sensors_unregister(struct device *dev,struct device_attribute *attributes[])
{
int i;
if (sensors_class != NULL) {
for (i = 0 ; attributes[i] != NULL ; i++)
device_remove_file(dev, attributes[i]);
}
}
EXPORT_SYMBOL_GPL(sensors_unregister);
static int __init sensors_class_init(void)
{
pr_debug("[SENSORS CORE] sensors_class_init\n");
sensors_class = class_create(THIS_MODULE, "sensors");
if (IS_ERR(sensors_class))
return PTR_ERR(sensors_class);
sensors_class->dev_uevent = NULL;
return 0;
}
static void __exit sensors_class_exit(void)
{
class_destroy(sensors_class);
}
/* exported for the APM Power driver, APM emulation */
subsys_initcall(sensors_class_init);
module_exit(sensors_class_exit);
MODULE_DESCRIPTION("Universal sensors core class");
MODULE_AUTHOR("Ryunkyun Park <ryun.park@samsung.com>");
MODULE_LICENSE("GPL");
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