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>
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/*
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* HID driver for Kye/Genius devices not fully compliant with HID standard
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*
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* Copyright (c) 2009 Jiri Kosina
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* Copyright (c) 2009 Tomas Hanak
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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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/* the fixups that need to be done:
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* - change led usage page to button for extra buttons
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* - report size 8 count 1 must be size 1 count 8 for button bitfield
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* - change the button usage range to 4-7 for the extra buttons
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*/
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static __u8 *kye_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 >= 74 &&
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rdesc[61] == 0x05 && rdesc[62] == 0x08 &&
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rdesc[63] == 0x19 && rdesc[64] == 0x08 &&
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rdesc[65] == 0x29 && rdesc[66] == 0x0f &&
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rdesc[71] == 0x75 && rdesc[72] == 0x08 &&
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rdesc[73] == 0x95 && rdesc[74] == 0x01) {
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dev_info(&hdev->dev, "fixing up Kye/Genius Ergo Mouse report "
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"descriptor\n");
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rdesc[62] = 0x09;
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rdesc[64] = 0x04;
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rdesc[66] = 0x07;
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rdesc[72] = 0x01;
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rdesc[74] = 0x08;
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}
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return rdesc;
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}
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static const struct hid_device_id kye_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, kye_devices);
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static struct hid_driver kye_driver = {
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.name = "kye",
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.id_table = kye_devices,
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.report_fixup = kye_report_fixup,
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};
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static int __init kye_init(void)
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{
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return hid_register_driver(&kye_driver);
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}
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static void __exit kye_exit(void)
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{
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hid_unregister_driver(&kye_driver);
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}
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module_init(kye_init);
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module_exit(kye_exit);
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MODULE_LICENSE("GPL");
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