Commit | Line | Data |
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980a3da6 JS |
1 | /* |
2 | * HID driver for some samsung "special" devices | |
3 | * | |
4 | * Copyright (c) 1999 Andreas Gal | |
5 | * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> | |
6 | * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc | |
7 | * Copyright (c) 2006-2007 Jiri Kosina | |
8 | * Copyright (c) 2007 Paul Walmsley | |
9 | * Copyright (c) 2008 Jiri Slaby | |
10 | */ | |
11 | ||
12 | /* | |
13 | * This program is free software; you can redistribute it and/or modify it | |
14 | * under the terms of the GNU General Public License as published by the Free | |
15 | * Software Foundation; either version 2 of the License, or (at your option) | |
16 | * any later version. | |
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 | /* | |
26 | * Samsung IrDA remote controller (reports as Cypress USB Mouse). | |
27 | * | |
0810b511 RS |
28 | * There are several variants for 0419:0001: |
29 | * | |
30 | * 1. 184 byte report descriptor | |
980a3da6 JS |
31 | * Vendor specific report #4 has a size of 48 bit, |
32 | * and therefore is not accepted when inspecting the descriptors. | |
33 | * As a workaround we reinterpret the report as: | |
34 | * Variable type, count 6, size 8 bit, log. maximum 255 | |
35 | * The burden to reconstruct the data is moved into user space. | |
0810b511 RS |
36 | * |
37 | * 2. 203 byte report descriptor | |
38 | * Report #4 has an array field with logical range 0..18 instead of 1..15. | |
39 | * | |
40 | * 3. 135 byte report descriptor | |
41 | * Report #4 has an array field with logical range 0..17 instead of 1..14. | |
3975bc56 RS |
42 | * |
43 | * 4. 171 byte report descriptor | |
44 | * Report #3 has an array field with logical range 0..1 instead of 1..3. | |
980a3da6 | 45 | */ |
3975bc56 RS |
46 | static inline void samsung_dev_trace(struct hid_device *hdev, |
47 | unsigned int rsize) | |
48 | { | |
49 | dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report " | |
50 | "descriptor\n", rsize); | |
51 | } | |
52 | ||
980a3da6 JS |
53 | static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
54 | unsigned int rsize) | |
55 | { | |
0810b511 | 56 | if (rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 && |
980a3da6 JS |
57 | rdesc[177] == 0x75 && rdesc[178] == 0x30 && |
58 | rdesc[179] == 0x95 && rdesc[180] == 0x01 && | |
59 | rdesc[182] == 0x40) { | |
3975bc56 | 60 | samsung_dev_trace(hdev, 184); |
980a3da6 JS |
61 | rdesc[176] = 0xff; |
62 | rdesc[178] = 0x08; | |
63 | rdesc[180] = 0x06; | |
64 | rdesc[182] = 0x42; | |
0810b511 RS |
65 | } else |
66 | if (rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 && | |
67 | rdesc[194] == 0x25 && rdesc[195] == 0x12) { | |
3975bc56 | 68 | samsung_dev_trace(hdev, 203); |
0810b511 RS |
69 | rdesc[193] = 0x1; |
70 | rdesc[195] = 0xf; | |
71 | } else | |
72 | if (rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 && | |
73 | rdesc[126] == 0x25 && rdesc[127] == 0x11) { | |
3975bc56 | 74 | samsung_dev_trace(hdev, 135); |
0810b511 RS |
75 | rdesc[125] = 0x1; |
76 | rdesc[127] = 0xe; | |
3975bc56 RS |
77 | } else |
78 | if (rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 && | |
79 | rdesc[162] == 0x25 && rdesc[163] == 0x01) { | |
80 | samsung_dev_trace(hdev, 171); | |
81 | rdesc[161] = 0x1; | |
82 | rdesc[163] = 0x3; | |
980a3da6 JS |
83 | } |
84 | } | |
85 | ||
86 | static int samsung_probe(struct hid_device *hdev, | |
87 | const struct hid_device_id *id) | |
88 | { | |
89 | int ret; | |
0810b511 | 90 | unsigned int cmask = HID_CONNECT_DEFAULT; |
980a3da6 | 91 | |
980a3da6 JS |
92 | ret = hid_parse(hdev); |
93 | if (ret) { | |
94 | dev_err(&hdev->dev, "parse failed\n"); | |
95 | goto err_free; | |
96 | } | |
97 | ||
0810b511 RS |
98 | if (hdev->rsize == 184) { |
99 | /* disable hidinput, force hiddev */ | |
100 | cmask = (cmask & ~HID_CONNECT_HIDINPUT) | | |
101 | HID_CONNECT_HIDDEV_FORCE; | |
102 | } | |
103 | ||
104 | ret = hid_hw_start(hdev, cmask); | |
980a3da6 JS |
105 | if (ret) { |
106 | dev_err(&hdev->dev, "hw start failed\n"); | |
107 | goto err_free; | |
108 | } | |
109 | ||
110 | return 0; | |
111 | err_free: | |
112 | return ret; | |
113 | } | |
114 | ||
115 | static const struct hid_device_id samsung_devices[] = { | |
116 | { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, | |
117 | { } | |
118 | }; | |
119 | MODULE_DEVICE_TABLE(hid, samsung_devices); | |
120 | ||
121 | static struct hid_driver samsung_driver = { | |
122 | .name = "samsung", | |
123 | .id_table = samsung_devices, | |
124 | .report_fixup = samsung_report_fixup, | |
125 | .probe = samsung_probe, | |
126 | }; | |
127 | ||
a24f423b | 128 | static int __init samsung_init(void) |
980a3da6 JS |
129 | { |
130 | return hid_register_driver(&samsung_driver); | |
131 | } | |
132 | ||
a24f423b | 133 | static void __exit samsung_exit(void) |
980a3da6 JS |
134 | { |
135 | hid_unregister_driver(&samsung_driver); | |
136 | } | |
137 | ||
138 | module_init(samsung_init); | |
139 | module_exit(samsung_exit); | |
140 | MODULE_LICENSE("GPL"); |