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| 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 | hid_info(hdev, |
| 38 | "fixing up zydacron remote control report descriptor\n"); |
| 39 | rdesc[0x96] = rdesc[0xca] = rdesc[0xe1] = 0x0c; |
| 40 | rdesc[0x97] = rdesc[0xcb] = rdesc[0xe2] = 0x00; |
| 41 | } |
| 42 | return rdesc; |
| 43 | } |
| 44 | |
| 45 | #define zc_map_key_clear(c) \ |
| 46 | hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) |
| 47 | |
| 48 | static int zc_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
| 49 | struct hid_field *field, struct hid_usage *usage, |
| 50 | unsigned long **bit, int *max) |
| 51 | { |
| 52 | int i; |
| 53 | struct zc_device *zc = hid_get_drvdata(hdev); |
| 54 | zc->input_ep81 = hi->input; |
| 55 | |
| 56 | if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) |
| 57 | return 0; |
| 58 | |
| 59 | dbg_hid("zynacron input mapping event [0x%x]\n", |
| 60 | usage->hid & HID_USAGE); |
| 61 | |
| 62 | switch (usage->hid & HID_USAGE) { |
| 63 | /* report 2 */ |
| 64 | case 0x10: |
| 65 | zc_map_key_clear(KEY_MODE); |
| 66 | break; |
| 67 | case 0x30: |
| 68 | zc_map_key_clear(KEY_SCREEN); |
| 69 | break; |
| 70 | case 0x70: |
| 71 | zc_map_key_clear(KEY_INFO); |
| 72 | break; |
| 73 | /* report 3 */ |
| 74 | case 0x04: |
| 75 | zc_map_key_clear(KEY_RADIO); |
| 76 | break; |
| 77 | /* report 4 */ |
| 78 | case 0x0d: |
| 79 | zc_map_key_clear(KEY_PVR); |
| 80 | break; |
| 81 | case 0x25: |
| 82 | zc_map_key_clear(KEY_TV); |
| 83 | break; |
| 84 | case 0x47: |
| 85 | zc_map_key_clear(KEY_AUDIO); |
| 86 | break; |
| 87 | case 0x49: |
| 88 | zc_map_key_clear(KEY_AUX); |
| 89 | break; |
| 90 | case 0x4a: |
| 91 | zc_map_key_clear(KEY_VIDEO); |
| 92 | break; |
| 93 | case 0x48: |
| 94 | zc_map_key_clear(KEY_DVD); |
| 95 | break; |
| 96 | case 0x24: |
| 97 | zc_map_key_clear(KEY_MENU); |
| 98 | break; |
| 99 | case 0x32: |
| 100 | zc_map_key_clear(KEY_TEXT); |
| 101 | break; |
| 102 | default: |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | for (i = 0; i < 4; i++) |
| 107 | zc->last_key[i] = 0; |
| 108 | |
| 109 | return 1; |
| 110 | } |
| 111 | |
| 112 | static int zc_raw_event(struct hid_device *hdev, struct hid_report *report, |
| 113 | u8 *data, int size) |
| 114 | { |
| 115 | struct zc_device *zc = hid_get_drvdata(hdev); |
| 116 | int ret = 0; |
| 117 | unsigned key; |
| 118 | unsigned short index; |
| 119 | |
| 120 | if (report->id == data[0]) { |
| 121 | |
| 122 | /* break keys */ |
| 123 | for (index = 0; index < 4; index++) { |
| 124 | key = zc->last_key[index]; |
| 125 | if (key) { |
| 126 | input_event(zc->input_ep81, EV_KEY, key, 0); |
| 127 | zc->last_key[index] = 0; |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | key = 0; |
| 132 | switch (report->id) { |
| 133 | case 0x02: |
| 134 | case 0x03: |
| 135 | switch (data[1]) { |
| 136 | case 0x10: |
| 137 | key = KEY_MODE; |
| 138 | index = 0; |
| 139 | break; |
| 140 | case 0x30: |
| 141 | key = KEY_SCREEN; |
| 142 | index = 1; |
| 143 | break; |
| 144 | case 0x70: |
| 145 | key = KEY_INFO; |
| 146 | index = 2; |
| 147 | break; |
| 148 | case 0x04: |
| 149 | key = KEY_RADIO; |
| 150 | index = 3; |
| 151 | break; |
| 152 | } |
| 153 | |
| 154 | if (key) { |
| 155 | input_event(zc->input_ep81, EV_KEY, key, 1); |
| 156 | zc->last_key[index] = key; |
| 157 | } |
| 158 | |
| 159 | ret = 1; |
| 160 | break; |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | return ret; |
| 165 | } |
| 166 | |
| 167 | static int zc_probe(struct hid_device *hdev, const struct hid_device_id *id) |
| 168 | { |
| 169 | int ret; |
| 170 | struct zc_device *zc; |
| 171 | |
| 172 | zc = kzalloc(sizeof(*zc), GFP_KERNEL); |
| 173 | if (zc == NULL) { |
| 174 | hid_err(hdev, "can't alloc descriptor\n"); |
| 175 | return -ENOMEM; |
| 176 | } |
| 177 | |
| 178 | hid_set_drvdata(hdev, zc); |
| 179 | |
| 180 | ret = hid_parse(hdev); |
| 181 | if (ret) { |
| 182 | hid_err(hdev, "parse failed\n"); |
| 183 | goto err_free; |
| 184 | } |
| 185 | |
| 186 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
| 187 | if (ret) { |
| 188 | hid_err(hdev, "hw start failed\n"); |
| 189 | goto err_free; |
| 190 | } |
| 191 | |
| 192 | return 0; |
| 193 | err_free: |
| 194 | kfree(zc); |
| 195 | |
| 196 | return ret; |
| 197 | } |
| 198 | |
| 199 | static void zc_remove(struct hid_device *hdev) |
| 200 | { |
| 201 | struct zc_device *zc = hid_get_drvdata(hdev); |
| 202 | |
| 203 | hid_hw_stop(hdev); |
| 204 | kfree(zc); |
| 205 | } |
| 206 | |
| 207 | static const struct hid_device_id zc_devices[] = { |
| 208 | { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) }, |
| 209 | { } |
| 210 | }; |
| 211 | MODULE_DEVICE_TABLE(hid, zc_devices); |
| 212 | |
| 213 | static struct hid_driver zc_driver = { |
| 214 | .name = "zydacron", |
| 215 | .id_table = zc_devices, |
| 216 | .report_fixup = zc_report_fixup, |
| 217 | .input_mapping = zc_input_mapping, |
| 218 | .raw_event = zc_raw_event, |
| 219 | .probe = zc_probe, |
| 220 | .remove = zc_remove, |
| 221 | }; |
| 222 | |
| 223 | static int __init zc_init(void) |
| 224 | { |
| 225 | return hid_register_driver(&zc_driver); |
| 226 | } |
| 227 | |
| 228 | static void __exit zc_exit(void) |
| 229 | { |
| 230 | hid_unregister_driver(&zc_driver); |
| 231 | } |
| 232 | |
| 233 | module_init(zc_init); |
| 234 | module_exit(zc_exit); |
| 235 | MODULE_LICENSE("GPL"); |
| 236 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9
