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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
8215d557 HR |
2 | /* |
3 | * HID support for Linux | |
4 | * | |
5 | * Copyright (c) 1999 Andreas Gal | |
6 | * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> | |
7 | * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc | |
8 | * Copyright (c) 2007-2008 Oliver Neukum | |
9 | * Copyright (c) 2006-2012 Jiri Kosina | |
10 | * Copyright (c) 2012 Henrik Rydberg | |
11 | */ | |
12 | ||
13 | /* | |
8215d557 HR |
14 | */ |
15 | ||
16 | #include <linux/module.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <asm/unaligned.h> | |
20 | #include <asm/byteorder.h> | |
21 | ||
22 | #include <linux/hid.h> | |
23 | ||
e04a0442 BT |
24 | static struct hid_driver hid_generic; |
25 | ||
e04a0442 BT |
26 | static int __check_hid_generic(struct device_driver *drv, void *data) |
27 | { | |
28 | struct hid_driver *hdrv = to_hid_driver(drv); | |
29 | struct hid_device *hdev = data; | |
30 | ||
31 | if (hdrv == &hid_generic) | |
32 | return 0; | |
33 | ||
34 | return hid_match_device(hdev, hdrv) != NULL; | |
35 | } | |
36 | ||
37 | static bool hid_generic_match(struct hid_device *hdev, | |
38 | bool ignore_special_driver) | |
39 | { | |
40 | if (ignore_special_driver) | |
41 | return true; | |
42 | ||
43 | if (hdev->quirks & HID_QUIRK_HAVE_SPECIAL_DRIVER) | |
44 | return false; | |
45 | ||
46 | /* | |
47 | * If any other driver wants the device, leave the device to this other | |
48 | * driver. | |
49 | */ | |
50 | if (bus_for_each_drv(&hid_bus_type, NULL, hdev, __check_hid_generic)) | |
51 | return false; | |
52 | ||
53 | return true; | |
54 | } | |
55 | ||
f07b3c1d BT |
56 | static int hid_generic_probe(struct hid_device *hdev, |
57 | const struct hid_device_id *id) | |
58 | { | |
59 | int ret; | |
60 | ||
61 | hdev->quirks |= HID_QUIRK_INPUT_PER_APP; | |
62 | ||
63 | ret = hid_parse(hdev); | |
64 | if (ret) | |
65 | return ret; | |
66 | ||
67 | return hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
68 | } | |
69 | ||
8215d557 | 70 | static const struct hid_device_id hid_table[] = { |
e04a0442 | 71 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, HID_ANY_ID, HID_ANY_ID) }, |
8215d557 HR |
72 | { } |
73 | }; | |
74 | MODULE_DEVICE_TABLE(hid, hid_table); | |
75 | ||
76 | static struct hid_driver hid_generic = { | |
77 | .name = "hid-generic", | |
78 | .id_table = hid_table, | |
e04a0442 | 79 | .match = hid_generic_match, |
f07b3c1d | 80 | .probe = hid_generic_probe, |
8215d557 | 81 | }; |
f425458e | 82 | module_hid_driver(hid_generic); |
8215d557 HR |
83 | |
84 | MODULE_AUTHOR("Henrik Rydberg"); | |
85 | MODULE_DESCRIPTION("HID generic driver"); | |
86 | MODULE_LICENSE("GPL"); |