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IB/pack: Remove some unused code added by the IBoE patches
[karo-tx-linux.git] / drivers / hid / hid-zydacron.c
1 /*
2 *  HID driver for zydacron remote control
3 *
4 *  Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk>
5 */
6
7 /*
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
11 * any later version.
12 */
13
14 #include <linux/device.h>
15 #include <linux/hid.h>
16 #include <linux/module.h>
17
18 #include "hid-ids.h"
19
20 struct zc_device {
21         struct input_dev        *input_ep81;
22         unsigned short          last_key[4];
23 };
24
25
26 /*
27 * Zydacron remote control has an invalid HID report descriptor,
28 * that needs fixing before we can parse it.
29 */
30 static __u8 *zc_report_fixup(struct hid_device *hdev, __u8 *rdesc,
31         unsigned int *rsize)
32 {
33         if (*rsize >= 253 &&
34                 rdesc[0x96] == 0xbc && rdesc[0x97] == 0xff &&
35                 rdesc[0xca] == 0xbc && rdesc[0xcb] == 0xff &&
36                 rdesc[0xe1] == 0xbc && rdesc[0xe2] == 0xff) {
37                         dev_info(&hdev->dev,
38                                 "fixing up zydacron remote control report "
39                                 "descriptor\n");
40                         rdesc[0x96] = rdesc[0xca] = rdesc[0xe1] = 0x0c;
41                         rdesc[0x97] = rdesc[0xcb] = rdesc[0xe2] = 0x00;
42                 }
43         return rdesc;
44 }
45
46 #define zc_map_key_clear(c) \
47         hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
48
49 static int zc_input_mapping(struct hid_device *hdev, struct hid_input *hi,
50         struct hid_field *field, struct hid_usage *usage,
51         unsigned long **bit, int *max)
52 {
53         int i;
54         struct zc_device *zc = hid_get_drvdata(hdev);
55         zc->input_ep81 = hi->input;
56
57         if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
58                 return 0;
59
60         dbg_hid("zynacron input mapping event [0x%x]\n",
61                 usage->hid & HID_USAGE);
62
63         switch (usage->hid & HID_USAGE) {
64         /* report 2 */
65         case 0x10:
66                 zc_map_key_clear(KEY_MODE);
67                 break;
68         case 0x30:
69                 zc_map_key_clear(KEY_SCREEN);
70                 break;
71         case 0x70:
72                 zc_map_key_clear(KEY_INFO);
73                 break;
74         /* report 3 */
75         case 0x04:
76                 zc_map_key_clear(KEY_RADIO);
77                 break;
78         /* report 4 */
79         case 0x0d:
80                 zc_map_key_clear(KEY_PVR);
81                 break;
82         case 0x25:
83                 zc_map_key_clear(KEY_TV);
84                 break;
85         case 0x47:
86                 zc_map_key_clear(KEY_AUDIO);
87                 break;
88         case 0x49:
89                 zc_map_key_clear(KEY_AUX);
90                 break;
91         case 0x4a:
92                 zc_map_key_clear(KEY_VIDEO);
93                 break;
94         case 0x48:
95                 zc_map_key_clear(KEY_DVD);
96                 break;
97         case 0x24:
98                 zc_map_key_clear(KEY_MENU);
99                 break;
100         case 0x32:
101                 zc_map_key_clear(KEY_TEXT);
102                 break;
103         default:
104                 return 0;
105         }
106
107         for (i = 0; i < 4; i++)
108                 zc->last_key[i] = 0;
109
110         return 1;
111 }
112
113 static int zc_raw_event(struct hid_device *hdev, struct hid_report *report,
114          u8 *data, int size)
115 {
116         struct zc_device *zc = hid_get_drvdata(hdev);
117         int ret = 0;
118         unsigned key;
119         unsigned short index;
120
121         if (report->id == data[0]) {
122
123                 /* break keys */
124                 for (index = 0; index < 4; index++) {
125                         key = zc->last_key[index];
126                         if (key) {
127                                 input_event(zc->input_ep81, EV_KEY, key, 0);
128                                 zc->last_key[index] = 0;
129                         }
130                 }
131
132                 key = 0;
133                 switch (report->id) {
134                 case 0x02:
135                 case 0x03:
136                         switch (data[1]) {
137                         case 0x10:
138                                 key = KEY_MODE;
139                                 index = 0;
140                                 break;
141                         case 0x30:
142                                 key = KEY_SCREEN;
143                                 index = 1;
144                                 break;
145                         case 0x70:
146                                 key = KEY_INFO;
147                                 index = 2;
148                                 break;
149                         case 0x04:
150                                 key = KEY_RADIO;
151                                 index = 3;
152                                 break;
153                         }
154
155                         if (key) {
156                                 input_event(zc->input_ep81, EV_KEY, key, 1);
157                                 zc->last_key[index] = key;
158                         }
159
160                         ret = 1;
161                         break;
162                 }
163         }
164
165         return ret;
166 }
167
168 static int zc_probe(struct hid_device *hdev, const struct hid_device_id *id)
169 {
170         int ret;
171         struct zc_device *zc;
172
173         zc = kzalloc(sizeof(*zc), GFP_KERNEL);
174         if (zc == NULL) {
175                 dev_err(&hdev->dev, "zydacron: can't alloc descriptor\n");
176                 return -ENOMEM;
177         }
178
179         hid_set_drvdata(hdev, zc);
180
181         ret = hid_parse(hdev);
182         if (ret) {
183                 dev_err(&hdev->dev, "zydacron: parse failed\n");
184                 goto err_free;
185         }
186
187         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
188         if (ret) {
189                 dev_err(&hdev->dev, "zydacron: hw start failed\n");
190                 goto err_free;
191         }
192
193         return 0;
194 err_free:
195         kfree(zc);
196
197         return ret;
198 }
199
200 static void zc_remove(struct hid_device *hdev)
201 {
202         struct zc_device *zc = hid_get_drvdata(hdev);
203
204         hid_hw_stop(hdev);
205
206         if (NULL != zc)
207                 kfree(zc);
208 }
209
210 static const struct hid_device_id zc_devices[] = {
211         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
212         { }
213 };
214 MODULE_DEVICE_TABLE(hid, zc_devices);
215
216 static struct hid_driver zc_driver = {
217         .name = "zydacron",
218         .id_table = zc_devices,
219         .report_fixup = zc_report_fixup,
220         .input_mapping = zc_input_mapping,
221         .raw_event = zc_raw_event,
222         .probe = zc_probe,
223         .remove = zc_remove,
224 };
225
226 static int __init zc_init(void)
227 {
228         return hid_register_driver(&zc_driver);
229 }
230
231 static void __exit zc_exit(void)
232 {
233         hid_unregister_driver(&zc_driver);
234 }
235
236 module_init(zc_init);
237 module_exit(zc_exit);
238 MODULE_LICENSE("GPL");