linux/drivers/hid/hid-ortek.c
Nikolai Kondrashov 73e4008ddd HID: allow resizing and replacing report descriptors
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>
2010-08-09 19:52:42 +02:00

58 lines
1.4 KiB
C

/*
* HID driver for Ortek WKB-2000 (wireless keyboard + mouse trackpad).
* Fixes LogicalMaximum error in USB report description, see
* http://bugzilla.kernel.org/show_bug.cgi?id=14787
*
* Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
*/
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
static __u8 *ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
dev_info(&hdev->dev, "Fixing up Ortek WKB-2000 "
"report descriptor.\n");
rdesc[55] = 0x92;
}
return rdesc;
}
static const struct hid_device_id ortek_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
{ }
};
MODULE_DEVICE_TABLE(hid, ortek_devices);
static struct hid_driver ortek_driver = {
.name = "ortek",
.id_table = ortek_devices,
.report_fixup = ortek_report_fixup
};
static int __init ortek_init(void)
{
return hid_register_driver(&ortek_driver);
}
static void __exit ortek_exit(void)
{
hid_unregister_driver(&ortek_driver);
}
module_init(ortek_init);
module_exit(ortek_exit);
MODULE_LICENSE("GPL");