Merge tag 'iio-fixes-for-6.6b' of https://git.kernel.org/pub/scm/linux/kernel/git...
[platform/kernel/linux-rpi.git] / drivers / hid / hid-ortek.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  HID driver for various devices which are apparently based on the same chipset
4  *  from certain vendor which produces chips that contain wrong LogicalMaximum
5  *  value in their HID report descriptor. Currently supported devices are:
6  *
7  *    Ortek PKB-1700
8  *    Ortek WKB-2000
9  *    iHome IMAC-A210S
10  *    Skycable wireless presenter
11  *
12  *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
13  *  Copyright (c) 2011 Jiri Kosina
14  */
15
16 /*
17  */
18
19 #include <linux/device.h>
20 #include <linux/hid.h>
21 #include <linux/module.h>
22
23 #include "hid-ids.h"
24
25 static __u8 *ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
26                 unsigned int *rsize)
27 {
28         if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
29                 hid_info(hdev, "Fixing up logical maximum in report descriptor (Ortek)\n");
30                 rdesc[55] = 0x92;
31         } else if (*rsize >= 54 && rdesc[52] == 0x25 && rdesc[53] == 0x01) {
32                 hid_info(hdev, "Fixing up logical maximum in report descriptor (Skycable)\n");
33                 rdesc[53] = 0x65;
34         }
35         return rdesc;
36 }
37
38 static const struct hid_device_id ortek_devices[] = {
39         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
40         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
41         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_IHOME_IMAC_A210S) },
42         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
43         { }
44 };
45 MODULE_DEVICE_TABLE(hid, ortek_devices);
46
47 static struct hid_driver ortek_driver = {
48         .name = "ortek",
49         .id_table = ortek_devices,
50         .report_fixup = ortek_report_fixup
51 };
52 module_hid_driver(ortek_driver);
53
54 MODULE_LICENSE("GPL");