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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) 2008 Jiri Slaby | |
9 | * Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk> | |
10 | * | |
11 | * | |
12 | * This driver supports several HID devices: | |
13 | * | |
14 | * [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse). | |
15 | * various hid report fixups for different variants. | |
16 | * | |
17 | * [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo | |
18 | * several key mappings used from the consumer usage page | |
19 | * deviate from the USB HUT 1.12 standard. | |
20 | * | |
21 | */ | |
22 | ||
23 | /* | |
24 | * This program is free software; you can redistribute it and/or modify it | |
25 | * under the terms of the GNU General Public License as published by the Free | |
26 | * Software Foundation; either version 2 of the License, or (at your option) | |
27 | * any later version. | |
28 | */ | |
29 | ||
30 | #include <linux/device.h> | |
31 | #include <linux/usb.h> | |
32 | #include <linux/hid.h> | |
33 | #include <linux/module.h> | |
34 | ||
35 | #include "hid-ids.h" | |
36 | ||
37 | /* | |
38 | * There are several variants for 0419:0001: | |
39 | * | |
40 | * 1. 184 byte report descriptor | |
41 | * Vendor specific report #4 has a size of 48 bit, | |
42 | * and therefore is not accepted when inspecting the descriptors. | |
43 | * As a workaround we reinterpret the report as: | |
44 | * Variable type, count 6, size 8 bit, log. maximum 255 | |
45 | * The burden to reconstruct the data is moved into user space. | |
46 | * | |
47 | * 2. 203 byte report descriptor | |
48 | * Report #4 has an array field with logical range 0..18 instead of 1..15. | |
49 | * | |
50 | * 3. 135 byte report descriptor | |
51 | * Report #4 has an array field with logical range 0..17 instead of 1..14. | |
52 | * | |
53 | * 4. 171 byte report descriptor | |
54 | * Report #3 has an array field with logical range 0..1 instead of 1..3. | |
55 | */ | |
56 | static inline void samsung_irda_dev_trace(struct hid_device *hdev, | |
57 | unsigned int rsize) | |
58 | { | |
59 | hid_info(hdev, "fixing up Samsung IrDA %d byte report descriptor\n", | |
60 | rsize); | |
61 | } | |
62 | ||
63 | static __u8 *samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc, | |
64 | unsigned int *rsize) | |
65 | { | |
66 | if (*rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 && | |
67 | rdesc[177] == 0x75 && rdesc[178] == 0x30 && | |
68 | rdesc[179] == 0x95 && rdesc[180] == 0x01 && | |
69 | rdesc[182] == 0x40) { | |
70 | samsung_irda_dev_trace(hdev, 184); | |
71 | rdesc[176] = 0xff; | |
72 | rdesc[178] = 0x08; | |
73 | rdesc[180] = 0x06; | |
74 | rdesc[182] = 0x42; | |
75 | } else | |
76 | if (*rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 && | |
77 | rdesc[194] == 0x25 && rdesc[195] == 0x12) { | |
78 | samsung_irda_dev_trace(hdev, 203); | |
79 | rdesc[193] = 0x1; | |
80 | rdesc[195] = 0xf; | |
81 | } else | |
82 | if (*rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 && | |
83 | rdesc[126] == 0x25 && rdesc[127] == 0x11) { | |
84 | samsung_irda_dev_trace(hdev, 135); | |
85 | rdesc[125] = 0x1; | |
86 | rdesc[127] = 0xe; | |
87 | } else | |
88 | if (*rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 && | |
89 | rdesc[162] == 0x25 && rdesc[163] == 0x01) { | |
90 | samsung_irda_dev_trace(hdev, 171); | |
91 | rdesc[161] = 0x1; | |
92 | rdesc[163] = 0x3; | |
93 | } | |
94 | return rdesc; | |
95 | } | |
96 | ||
97 | #define samsung_kbd_mouse_map_key_clear(c) \ | |
98 | hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) | |
99 | ||
100 | static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev, | |
101 | struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, | |
102 | unsigned long **bit, int *max) | |
103 | { | |
104 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); | |
105 | unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
106 | ||
107 | if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE)) | |
108 | return 0; | |
109 | ||
110 | dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n", | |
111 | usage->hid & HID_USAGE); | |
112 | ||
113 | switch (usage->hid & HID_USAGE) { | |
114 | /* report 2 */ | |
115 | case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break; | |
116 | case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL); break; | |
117 | case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break; | |
118 | case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break; | |
119 | case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break; | |
120 | case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break; | |
121 | case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break; | |
122 | case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break; | |
123 | case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break; | |
124 | case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break; | |
125 | case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break; | |
126 | default: | |
127 | return 0; | |
128 | } | |
129 | ||
130 | return 1; | |
131 | } | |
132 | ||
133 | static __u8 *samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc, | |
134 | unsigned int *rsize) | |
135 | { | |
136 | if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) | |
137 | rdesc = samsung_irda_report_fixup(hdev, rdesc, rsize); | |
138 | return rdesc; | |
139 | } | |
140 | ||
141 | static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
142 | struct hid_field *field, struct hid_usage *usage, | |
143 | unsigned long **bit, int *max) | |
144 | { | |
145 | int ret = 0; | |
146 | ||
147 | if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product) | |
148 | ret = samsung_kbd_mouse_input_mapping(hdev, | |
149 | hi, field, usage, bit, max); | |
150 | ||
151 | return ret; | |
152 | } | |
153 | ||
154 | static int samsung_probe(struct hid_device *hdev, | |
155 | const struct hid_device_id *id) | |
156 | { | |
157 | int ret; | |
158 | unsigned int cmask = HID_CONNECT_DEFAULT; | |
159 | ||
160 | ret = hid_parse(hdev); | |
161 | if (ret) { | |
162 | hid_err(hdev, "parse failed\n"); | |
163 | goto err_free; | |
164 | } | |
165 | ||
166 | if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) { | |
167 | if (hdev->rsize == 184) { | |
168 | /* disable hidinput, force hiddev */ | |
169 | cmask = (cmask & ~HID_CONNECT_HIDINPUT) | | |
170 | HID_CONNECT_HIDDEV_FORCE; | |
171 | } | |
172 | } | |
173 | ||
174 | ret = hid_hw_start(hdev, cmask); | |
175 | if (ret) { | |
176 | hid_err(hdev, "hw start failed\n"); | |
177 | goto err_free; | |
178 | } | |
179 | ||
180 | return 0; | |
181 | err_free: | |
182 | return ret; | |
183 | } | |
184 | ||
185 | static const struct hid_device_id samsung_devices[] = { | |
186 | { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, | |
187 | { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) }, | |
188 | { } | |
189 | }; | |
190 | MODULE_DEVICE_TABLE(hid, samsung_devices); | |
191 | ||
192 | static struct hid_driver samsung_driver = { | |
193 | .name = "samsung", | |
194 | .id_table = samsung_devices, | |
195 | .report_fixup = samsung_report_fixup, | |
196 | .input_mapping = samsung_input_mapping, | |
197 | .probe = samsung_probe, | |
198 | }; | |
199 | module_hid_driver(samsung_driver); | |
200 | ||
201 | MODULE_LICENSE("GPL"); |