| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
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| 2 | /* |
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| 3 | * HID driver for Semitek keyboards |
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| 4 | * |
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| 5 | * Copyright (c) 2021 Benjamin Moody |
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| 6 | */ |
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| 7 | |
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| 8 | #include <linux/device.h> |
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| 9 | #include <linux/hid.h> |
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| 10 | #include <linux/module.h> |
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| 11 | |
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| 12 | #include "hid-ids.h" |
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| 13 | |
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| 14 | static __u8 *semitek_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
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| 15 | unsigned int *rsize) |
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| 16 | { |
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| 17 | /* In the report descriptor for interface 2, fix the incorrect |
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| 18 | description of report ID 0x04 (the report contains a |
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| 19 | bitmask, not an array of keycodes.) */ |
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| 20 | if (*rsize == 0xcb && rdesc[0x83] == 0x81 && rdesc[0x84] == 0x00) { |
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| 21 | hid_info(hdev, "fixing up Semitek report descriptor\n" ); |
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| 22 | rdesc[0x84] = 0x02; |
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| 23 | } |
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| 24 | return rdesc; |
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| 25 | } |
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| 26 | |
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| 27 | static const struct hid_device_id semitek_devices[] = { |
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| 28 | { HID_USB_DEVICE(USB_VENDOR_ID_SEMITEK, USB_DEVICE_ID_SEMITEK_KEYBOARD) }, |
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| 29 | { } |
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| 30 | }; |
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| 31 | MODULE_DEVICE_TABLE(hid, semitek_devices); |
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| 32 | |
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| 33 | static struct hid_driver semitek_driver = { |
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| 34 | .name = "semitek" , |
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| 35 | .id_table = semitek_devices, |
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| 36 | .report_fixup = semitek_report_fixup, |
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| 37 | }; |
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| 38 | module_hid_driver(semitek_driver); |
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| 39 | |
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| 40 | MODULE_LICENSE("GPL" ); |
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| 41 | |
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