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73e4008ddd
Update hid_driver's report_fixup prototype to allow changing report descriptor size and/or returning completely different report descriptor. Update existing usage accordingly. This is to give more freedom in descriptor fixup and to allow having a whole fixed descriptor in the code for the sake of readability. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* HID driver for Elecom BM084 (bluetooth mouse).
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* Removes a non-existing horizontal wheel from
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* the HID descriptor.
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* (This module is based on "hid-ortek".)
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*
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* Copyright (c) 2010 Richard Nauber <Richard.Nauber@gmail.com>
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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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static __u8 *elecom_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 >= 48 && rdesc[46] == 0x05 && rdesc[47] == 0x0c) {
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dev_info(&hdev->dev, "Fixing up Elecom BM084 "
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"report descriptor.\n");
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rdesc[47] = 0x00;
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}
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return rdesc;
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}
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static const struct hid_device_id elecom_devices[] = {
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{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084)},
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{ }
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};
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MODULE_DEVICE_TABLE(hid, elecom_devices);
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static struct hid_driver elecom_driver = {
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.name = "elecom",
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.id_table = elecom_devices,
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.report_fixup = elecom_report_fixup
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};
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static int __init elecom_init(void)
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{
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return hid_register_driver(&elecom_driver);
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}
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static void __exit elecom_exit(void)
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{
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hid_unregister_driver(&elecom_driver);
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}
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module_init(elecom_init);
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module_exit(elecom_exit);
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MODULE_LICENSE("GPL");
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