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