d586dca06a
This device contains the very same bug in report descriptor as the Ortek ones do (i.e. LogicalMinimum == 1, which is wrong for the key array). As we have more reports for the Ortek devices, we are keeping the driver name for now. Apparently there is a chip producer which sells chip with this buggy descriptor to multiple vendors. Thus if such reports start to come at highger frequency, we'll either have to rename the driver accordingly, or come up with more generic workaround. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
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* HID driver for various devices which are apparently based on the same chipset
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* from certain vendor which produces chips that contain wrong LogicalMaximum
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* value in their HID report descriptor. Currently supported devices are:
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*
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* Ortek PKB-1700
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* Ortek WKB-2000
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* Skycable wireless presenter
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*
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* Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
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* Copyright (c) 2011 Jiri Kosina
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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 *ortek_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 >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
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hid_info(hdev, "Fixing up logical minimum in report descriptor (Ortek)\n");
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rdesc[55] = 0x92;
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} else if (*rsize >= 54 && rdesc[52] == 0x25 && rdesc[53] == 0x01) {
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hid_info(hdev, "Fixing up logical minimum in report descriptor (Skycable)\n");
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rdesc[53] = 0x65;
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}
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return rdesc;
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}
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static const struct hid_device_id ortek_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, ortek_devices);
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static struct hid_driver ortek_driver = {
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.name = "ortek",
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.id_table = ortek_devices,
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.report_fixup = ortek_report_fixup
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};
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static int __init ortek_init(void)
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{
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return hid_register_driver(&ortek_driver);
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}
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static void __exit ortek_exit(void)
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{
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hid_unregister_driver(&ortek_driver);
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}
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module_init(ortek_init);
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module_exit(ortek_exit);
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MODULE_LICENSE("GPL");
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