1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * HID driver for Keytouch devices not fully compliant with HID standard 4 * 5 * Copyright (c) 2011 Jiri Kosina 6 */ 7 8 /* 9 */ 10 11 #include <linux/device.h> 12 #include <linux/hid.h> 13 #include <linux/module.h> 14 15 #include "hid-ids.h" 16 17 /* Replace the broken report descriptor of this device with rather 18 * a default one */ 19 static __u8 keytouch_fixed_rdesc[] = { 20 0x05, 0x01, 0x09, 0x06, 0xa1, 0x01, 0x05, 0x07, 0x19, 0xe0, 0x29, 0xe7, 0x15, 21 0x00, 0x25, 0x01, 0x75, 0x01, 0x95, 0x08, 0x81, 0x02, 0x95, 0x01, 0x75, 0x08, 22 0x81, 0x01, 0x95, 0x03, 0x75, 0x01, 0x05, 0x08, 0x19, 0x01, 0x29, 0x03, 0x91, 23 0x02, 0x95, 0x05, 0x75, 0x01, 0x91, 0x01, 0x95, 0x06, 0x75, 0x08, 0x15, 0x00, 24 0x26, 0xff, 0x00, 0x05, 0x07, 0x19, 0x00, 0x2a, 0xff, 0x00, 0x81, 0x00, 0xc0 25 }; 26 27 static __u8 *keytouch_report_fixup(struct hid_device *hdev, __u8 *rdesc, 28 unsigned int *rsize) 29 { 30 hid_info(hdev, "fixing up Keytouch IEC report descriptor\n"); 31 32 rdesc = keytouch_fixed_rdesc; 33 *rsize = sizeof(keytouch_fixed_rdesc); 34 35 return rdesc; 36 } 37 38 static const struct hid_device_id keytouch_devices[] = { 39 { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) }, 40 { } 41 }; 42 MODULE_DEVICE_TABLE(hid, keytouch_devices); 43 44 static struct hid_driver keytouch_driver = { 45 .name = "keytouch", 46 .id_table = keytouch_devices, 47 .report_fixup = keytouch_report_fixup, 48 }; 49 module_hid_driver(keytouch_driver); 50 51 MODULE_LICENSE("GPL"); 52 MODULE_AUTHOR("Jiri Kosina"); 53