1 /* 2 * HID driver for Kensigton Slimblade Trackball 3 * 4 * Copyright (c) 2009 Jiri Kosina 5 */ 6 7 /* 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the Free 10 * Software Foundation; either version 2 of the License, or (at your option) 11 * any later version. 12 */ 13 14 #include <linux/device.h> 15 #include <linux/input.h> 16 #include <linux/hid.h> 17 #include <linux/module.h> 18 19 #include "hid-ids.h" 20 21 #define ks_map_key(c) hid_map_usage(hi, usage, bit, max, EV_KEY, (c)) 22 23 static int ks_input_mapping(struct hid_device *hdev, struct hid_input *hi, 24 struct hid_field *field, struct hid_usage *usage, 25 unsigned long **bit, int *max) 26 { 27 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR) 28 return 0; 29 30 switch (usage->hid & HID_USAGE) { 31 case 0x01: ks_map_key(BTN_MIDDLE); break; 32 case 0x02: ks_map_key(BTN_SIDE); break; 33 default: 34 return 0; 35 } 36 return 1; 37 } 38 39 static const struct hid_device_id ks_devices[] = { 40 { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) }, 41 { } 42 }; 43 MODULE_DEVICE_TABLE(hid, ks_devices); 44 45 static struct hid_driver ks_driver = { 46 .name = "kensington", 47 .id_table = ks_devices, 48 .input_mapping = ks_input_mapping, 49 }; 50 51 static int ks_init(void) 52 { 53 return hid_register_driver(&ks_driver); 54 } 55 56 static void ks_exit(void) 57 { 58 hid_unregister_driver(&ks_driver); 59 } 60 61 module_init(ks_init); 62 module_exit(ks_exit); 63 MODULE_LICENSE("GPL"); 64 65 HID_COMPAT_LOAD_DRIVER(kensington); 66