1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * HID driver for some sunplus "special" devices
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (c) 1999 Andreas Gal
6*4882a593Smuzhiyun * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
7*4882a593Smuzhiyun * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
8*4882a593Smuzhiyun * Copyright (c) 2006-2007 Jiri Kosina
9*4882a593Smuzhiyun * Copyright (c) 2008 Jiri Slaby
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun /*
13*4882a593Smuzhiyun */
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include <linux/device.h>
16*4882a593Smuzhiyun #include <linux/hid.h>
17*4882a593Smuzhiyun #include <linux/module.h>
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #include "hid-ids.h"
20*4882a593Smuzhiyun
sp_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int * rsize)21*4882a593Smuzhiyun static __u8 *sp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
22*4882a593Smuzhiyun unsigned int *rsize)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun if (*rsize >= 112 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&
25*4882a593Smuzhiyun rdesc[106] == 0x03) {
26*4882a593Smuzhiyun hid_info(hdev, "fixing up Sunplus Wireless Desktop report descriptor\n");
27*4882a593Smuzhiyun rdesc[105] = rdesc[110] = 0x03;
28*4882a593Smuzhiyun rdesc[106] = rdesc[111] = 0x21;
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun return rdesc;
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun #define sp_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
34*4882a593Smuzhiyun EV_KEY, (c))
sp_input_mapping(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)35*4882a593Smuzhiyun static int sp_input_mapping(struct hid_device *hdev, struct hid_input *hi,
36*4882a593Smuzhiyun struct hid_field *field, struct hid_usage *usage,
37*4882a593Smuzhiyun unsigned long **bit, int *max)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
40*4882a593Smuzhiyun return 0;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun switch (usage->hid & HID_USAGE) {
43*4882a593Smuzhiyun case 0x2003: sp_map_key_clear(KEY_ZOOMIN); break;
44*4882a593Smuzhiyun case 0x2103: sp_map_key_clear(KEY_ZOOMOUT); break;
45*4882a593Smuzhiyun default:
46*4882a593Smuzhiyun return 0;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun return 1;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun static const struct hid_device_id sp_devices[] = {
52*4882a593Smuzhiyun { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
53*4882a593Smuzhiyun { }
54*4882a593Smuzhiyun };
55*4882a593Smuzhiyun MODULE_DEVICE_TABLE(hid, sp_devices);
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun static struct hid_driver sp_driver = {
58*4882a593Smuzhiyun .name = "sunplus",
59*4882a593Smuzhiyun .id_table = sp_devices,
60*4882a593Smuzhiyun .report_fixup = sp_report_fixup,
61*4882a593Smuzhiyun .input_mapping = sp_input_mapping,
62*4882a593Smuzhiyun };
63*4882a593Smuzhiyun module_hid_driver(sp_driver);
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun MODULE_LICENSE("GPL");
66