hid-kensington.c
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/*
* HID driver for Kensigton Slimblade Trackball
*
* Copyright (c) 2009 Jiri Kosina
*/
/*
* 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; either version 2 of the License, or (at your option)
* any later version.
*/
#include <linux/device.h>
#include <linux/input.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
#define ks_map_key(c) hid_map_usage(hi, usage, bit, max, EV_KEY, (c))
static int ks_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
return 0;
switch (usage->hid & HID_USAGE) {
case 0x01: ks_map_key(BTN_MIDDLE); break;
case 0x02: ks_map_key(BTN_SIDE); break;
default:
return 0;
}
return 1;
}
static const struct hid_device_id ks_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
{ }
};
MODULE_DEVICE_TABLE(hid, ks_devices);
static struct hid_driver ks_driver = {
.name = "kensington",
.id_table = ks_devices,
.input_mapping = ks_input_mapping,
};
module_hid_driver(ks_driver);
MODULE_LICENSE("GPL");