51 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * HID driver for Kensington Slimblade Trackball4 *5 * Copyright (c) 2009 Jiri Kosina6 */7 8/*9 */10 11#include <linux/device.h>12#include <linux/input.h>13#include <linux/hid.h>14#include <linux/module.h>15 16#include "hid-ids.h"17 18#define ks_map_key(c) hid_map_usage(hi, usage, bit, max, EV_KEY, (c))19 20static int ks_input_mapping(struct hid_device *hdev, struct hid_input *hi,21 struct hid_field *field, struct hid_usage *usage,22 unsigned long **bit, int *max)23{24 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)25 return 0;26 27 switch (usage->hid & HID_USAGE) {28 case 0x01: ks_map_key(BTN_MIDDLE); break;29 case 0x02: ks_map_key(BTN_SIDE); break;30 default:31 return 0;32 }33 return 1;34}35 36static const struct hid_device_id ks_devices[] = {37 { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },38 { }39};40MODULE_DEVICE_TABLE(hid, ks_devices);41 42static struct hid_driver ks_driver = {43 .name = "kensington",44 .id_table = ks_devices,45 .input_mapping = ks_input_mapping,46};47module_hid_driver(ks_driver);48 49MODULE_DESCRIPTION("HID driver for Kensington Slimblade Trackball");50MODULE_LICENSE("GPL");51