1 /* 2 * HID driver for Keytouch devices not fully compliant with HID standard 3 * 4 * Copyright (c) 2011 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/hid.h> 16 #include <linux/module.h> 17 18 #include "hid-ids.h" 19 20 /* Replace the broken report descriptor of this device with rather 21 * a default one */ 22 static __u8 keytouch_fixed_rdesc[] = { 23 0x05, 0x01, 0x09, 0x06, 0xa1, 0x01, 0x05, 0x07, 0x19, 0xe0, 0x29, 0xe7, 0x15, 24 0x00, 0x25, 0x01, 0x75, 0x01, 0x95, 0x08, 0x81, 0x02, 0x95, 0x01, 0x75, 0x08, 25 0x81, 0x01, 0x95, 0x03, 0x75, 0x01, 0x05, 0x08, 0x19, 0x01, 0x29, 0x03, 0x91, 26 0x02, 0x95, 0x05, 0x75, 0x01, 0x91, 0x01, 0x95, 0x06, 0x75, 0x08, 0x15, 0x00, 27 0x26, 0xff, 0x00, 0x05, 0x07, 0x19, 0x00, 0x2a, 0xff, 0x00, 0x81, 0x00, 0xc0 28 }; 29 30 static __u8 *keytouch_report_fixup(struct hid_device *hdev, __u8 *rdesc, 31 unsigned int *rsize) 32 { 33 hid_info(hdev, "fixing up Keytouch IEC report descriptor\n"); 34 35 rdesc = keytouch_fixed_rdesc; 36 *rsize = sizeof(keytouch_fixed_rdesc); 37 38 return rdesc; 39 } 40 41 static const struct hid_device_id keytouch_devices[] = { 42 { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) }, 43 { } 44 }; 45 MODULE_DEVICE_TABLE(hid, keytouch_devices); 46 47 static struct hid_driver keytouch_driver = { 48 .name = "keytouch", 49 .id_table = keytouch_devices, 50 .report_fixup = keytouch_report_fixup, 51 }; 52 53 static int __init keytouch_init(void) 54 { 55 return hid_register_driver(&keytouch_driver); 56 } 57 58 static void __exit keytouch_exit(void) 59 { 60 hid_unregister_driver(&keytouch_driver); 61 } 62 63 module_init(keytouch_init); 64 module_exit(keytouch_exit); 65 MODULE_LICENSE("GPL"); 66 MODULE_AUTHOR("Jiri Kosina"); 67