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/* ir-register.c - handle IR scancode->keycode tables
*
* Copyright (C) 2009 by Mauro Carvalho Chehab <mchehab@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* 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.
*/
#include <linux/input.h>
#include <linux/device.h>
#include <media/ir-core.h>
#define IRRCV_NUM_DEVICES 256
unsigned long ir_core_dev_number;
static struct class *ir_input_class;
static DEVICE_ATTR(ir_protocol, S_IRUGO | S_IWUSR, NULL, NULL);
static struct attribute *ir_dev_attrs[] = {
&dev_attr_ir_protocol.attr,
};
int ir_register_class(struct input_dev *input_dev)
{
int rc;
struct kobject *kobj;
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
int devno = find_first_zero_bit(&ir_core_dev_number,
IRRCV_NUM_DEVICES);
if (unlikely(devno < 0))
return devno;
ir_dev->attr.attrs = ir_dev_attrs;
ir_dev->class_dev = device_create(ir_input_class, NULL,
input_dev->dev.devt, ir_dev,
"irrcv%d", devno);
kobj = &ir_dev->class_dev->kobj;
printk(KERN_WARNING "Creating IR device %s\n", kobject_name(kobj));
rc = sysfs_create_group(kobj, &ir_dev->attr);
if (unlikely(rc < 0)) {
device_destroy(ir_input_class, input_dev->dev.devt);
return -ENOMEM;
}
ir_dev->devno = devno;
set_bit(devno, &ir_core_dev_number);
return 0;
};
void ir_unregister_class(struct input_dev *input_dev)
{
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
struct kobject *kobj;
clear_bit(ir_dev->devno, &ir_core_dev_number);
kobj = &ir_dev->class_dev->kobj;
sysfs_remove_group(kobj, &ir_dev->attr);
device_destroy(ir_input_class, input_dev->dev.devt);
kfree(ir_dev->attr.name);
}
static int __init ir_core_init(void)
{
ir_input_class = class_create(THIS_MODULE, "irrcv");
if (IS_ERR(ir_input_class)) {
printk(KERN_ERR "ir_core: unable to register irrcv class\n");
return PTR_ERR(ir_input_class);
}
return 0;
}
static void __exit ir_core_exit(void)
{
class_destroy(ir_input_class);
}
module_init(ir_core_init);
module_exit(ir_core_exit);
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