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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 | * Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk> |
11 | * |
12 | * |
13 | * This driver supports several HID devices: |
14 | * |
15 | * [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse). |
16 | * various hid report fixups for different variants. |
17 | * |
18 | * [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo |
19 | * several key mappings used from the consumer usage page |
20 | * deviate from the USB HUT 1.12 standard. |
21 | * |
22 | */ |
23 | |
24 | /* |
25 | * This program is free software; you can redistribute it and/or modify it |
26 | * under the terms of the GNU General Public License as published by the Free |
27 | * Software Foundation; either version 2 of the License, or (at your option) |
28 | * any later version. |
29 | */ |
30 | |
31 | #include <linux/device.h> |
32 | #include <linux/usb.h> |
33 | #include <linux/hid.h> |
34 | #include <linux/module.h> |
35 | |
36 | #include "hid-ids.h" |
37 | |
38 | /* |
39 | * There are several variants for 0419:0001: |
40 | * |
41 | * 1. 184 byte report descriptor |
42 | * Vendor specific report #4 has a size of 48 bit, |
43 | * and therefore is not accepted when inspecting the descriptors. |
44 | * As a workaround we reinterpret the report as: |
45 | * Variable type, count 6, size 8 bit, log. maximum 255 |
46 | * The burden to reconstruct the data is moved into user space. |
47 | * |
48 | * 2. 203 byte report descriptor |
49 | * Report #4 has an array field with logical range 0..18 instead of 1..15. |
50 | * |
51 | * 3. 135 byte report descriptor |
52 | * Report #4 has an array field with logical range 0..17 instead of 1..14. |
53 | * |
54 | * 4. 171 byte report descriptor |
55 | * Report #3 has an array field with logical range 0..1 instead of 1..3. |
56 | */ |
57 | static inline void samsung_irda_dev_trace(struct hid_device *hdev, |
58 | unsigned int rsize) |
59 | { |
60 | hid_info(hdev, "fixing up Samsung IrDA %d byte report descriptor\n", |
61 | rsize); |
62 | } |
63 | |
64 | static __u8 *samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
65 | unsigned int *rsize) |
66 | { |
67 | if (*rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 && |
68 | rdesc[177] == 0x75 && rdesc[178] == 0x30 && |
69 | rdesc[179] == 0x95 && rdesc[180] == 0x01 && |
70 | rdesc[182] == 0x40) { |
71 | samsung_irda_dev_trace(hdev, 184); |
72 | rdesc[176] = 0xff; |
73 | rdesc[178] = 0x08; |
74 | rdesc[180] = 0x06; |
75 | rdesc[182] = 0x42; |
76 | } else |
77 | if (*rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 && |
78 | rdesc[194] == 0x25 && rdesc[195] == 0x12) { |
79 | samsung_irda_dev_trace(hdev, 203); |
80 | rdesc[193] = 0x1; |
81 | rdesc[195] = 0xf; |
82 | } else |
83 | if (*rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 && |
84 | rdesc[126] == 0x25 && rdesc[127] == 0x11) { |
85 | samsung_irda_dev_trace(hdev, 135); |
86 | rdesc[125] = 0x1; |
87 | rdesc[127] = 0xe; |
88 | } else |
89 | if (*rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 && |
90 | rdesc[162] == 0x25 && rdesc[163] == 0x01) { |
91 | samsung_irda_dev_trace(hdev, 171); |
92 | rdesc[161] = 0x1; |
93 | rdesc[163] = 0x3; |
94 | } |
95 | return rdesc; |
96 | } |
97 | |
98 | #define samsung_kbd_mouse_map_key_clear(c) \ |
99 | hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) |
100 | |
101 | static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev, |
102 | struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, |
103 | unsigned long **bit, int *max) |
104 | { |
105 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
106 | unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber; |
107 | |
108 | if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE)) |
109 | return 0; |
110 | |
111 | dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n", |
112 | usage->hid & HID_USAGE); |
113 | |
114 | switch (usage->hid & HID_USAGE) { |
115 | /* report 2 */ |
116 | case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break; |
117 | case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL); break; |
118 | case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break; |
119 | case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break; |
120 | case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break; |
121 | case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break; |
122 | case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break; |
123 | case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break; |
124 | case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break; |
125 | case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break; |
126 | case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break; |
127 | default: |
128 | return 0; |
129 | } |
130 | |
131 | return 1; |
132 | } |
133 | |
134 | static __u8 *samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
135 | unsigned int *rsize) |
136 | { |
137 | if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) |
138 | rdesc = samsung_irda_report_fixup(hdev, rdesc, rsize); |
139 | return rdesc; |
140 | } |
141 | |
142 | static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
143 | struct hid_field *field, struct hid_usage *usage, |
144 | unsigned long **bit, int *max) |
145 | { |
146 | int ret = 0; |
147 | |
148 | if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product) |
149 | ret = samsung_kbd_mouse_input_mapping(hdev, |
150 | hi, field, usage, bit, max); |
151 | |
152 | return ret; |
153 | } |
154 | |
155 | static int samsung_probe(struct hid_device *hdev, |
156 | const struct hid_device_id *id) |
157 | { |
158 | int ret; |
159 | unsigned int cmask = HID_CONNECT_DEFAULT; |
160 | |
161 | ret = hid_parse(hdev); |
162 | if (ret) { |
163 | hid_err(hdev, "parse failed\n"); |
164 | goto err_free; |
165 | } |
166 | |
167 | if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) { |
168 | if (hdev->rsize == 184) { |
169 | /* disable hidinput, force hiddev */ |
170 | cmask = (cmask & ~HID_CONNECT_HIDINPUT) | |
171 | HID_CONNECT_HIDDEV_FORCE; |
172 | } |
173 | } |
174 | |
175 | ret = hid_hw_start(hdev, cmask); |
176 | if (ret) { |
177 | hid_err(hdev, "hw start failed\n"); |
178 | goto err_free; |
179 | } |
180 | |
181 | return 0; |
182 | err_free: |
183 | return ret; |
184 | } |
185 | |
186 | static const struct hid_device_id samsung_devices[] = { |
187 | { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, |
188 | { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) }, |
189 | { } |
190 | }; |
191 | MODULE_DEVICE_TABLE(hid, samsung_devices); |
192 | |
193 | static struct hid_driver samsung_driver = { |
194 | .name = "samsung", |
195 | .id_table = samsung_devices, |
196 | .report_fixup = samsung_report_fixup, |
197 | .input_mapping = samsung_input_mapping, |
198 | .probe = samsung_probe, |
199 | }; |
200 | |
201 | static int __init samsung_init(void) |
202 | { |
203 | return hid_register_driver(&samsung_driver); |
204 | } |
205 | |
206 | static void __exit samsung_exit(void) |
207 | { |
208 | hid_unregister_driver(&samsung_driver); |
209 | } |
210 | |
211 | module_init(samsung_init); |
212 | module_exit(samsung_exit); |
213 | MODULE_LICENSE("GPL"); |
214 |
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