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62 lines
1.4 KiB
62 lines
1.4 KiB
/* |
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* HID driver for Redragon keyboards |
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* |
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* Copyright (c) 2017 Robert Munteanu |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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/* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the Free |
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* Software Foundation; either version 2 of the License, or (at your option) |
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* any later version. |
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*/ |
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#include <linux/device.h> |
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#include <linux/hid.h> |
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#include <linux/module.h> |
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#include "hid-ids.h" |
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/* |
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* The Redragon Asura keyboard sends an incorrect HID descriptor. |
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* At byte 100 it contains |
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* |
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* 0x81, 0x00 |
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* |
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* which is Input (Data, Arr, Abs), but it should be |
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* |
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* 0x81, 0x02 |
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* |
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* which is Input (Data, Var, Abs), which is consistent with the way |
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* key codes are generated. |
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*/ |
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static __u8 *redragon_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
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unsigned int *rsize) |
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{ |
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if (*rsize >= 102 && rdesc[100] == 0x81 && rdesc[101] == 0x00) { |
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dev_info(&hdev->dev, "Fixing Redragon ASURA report descriptor.\n"); |
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rdesc[101] = 0x02; |
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} |
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return rdesc; |
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} |
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static const struct hid_device_id redragon_devices[] = { |
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{HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_REDRAGON_ASURA)}, |
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{} |
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}; |
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MODULE_DEVICE_TABLE(hid, redragon_devices); |
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static struct hid_driver redragon_driver = { |
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.name = "redragon", |
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.id_table = redragon_devices, |
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.report_fixup = redragon_report_fixup |
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}; |
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module_hid_driver(redragon_driver); |
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MODULE_LICENSE("GPL");
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