Commit | Line | Data |
---|---|---|
829ba9fe | 1 | /* rc-main.c - Remote Controller core module |
ef53a115 | 2 | * |
37e59f87 | 3 | * Copyright (C) 2009-2010 by Mauro Carvalho Chehab |
446e4a64 MCC |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation version 2 of the License. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
ef53a115 MCC |
13 | */ |
14 | ||
6bda9644 | 15 | #include <media/rc-core.h> |
631493ec MCC |
16 | #include <linux/spinlock.h> |
17 | #include <linux/delay.h> | |
882ead32 | 18 | #include <linux/input.h> |
153a60bb | 19 | #include <linux/leds.h> |
5a0e3ad6 | 20 | #include <linux/slab.h> |
bc2a6c57 | 21 | #include <linux/device.h> |
7a707b89 | 22 | #include <linux/module.h> |
f62de675 | 23 | #include "rc-core-priv.h" |
ef53a115 | 24 | |
587d1b06 MCC |
25 | /* Bitmap to store allocated device numbers from 0 to IRRCV_NUM_DEVICES - 1 */ |
26 | #define IRRCV_NUM_DEVICES 256 | |
692a228e | 27 | static DECLARE_BITMAP(ir_core_dev_number, IRRCV_NUM_DEVICES); |
587d1b06 | 28 | |
b3074c0a DH |
29 | /* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */ |
30 | #define IR_TAB_MIN_SIZE 256 | |
31 | #define IR_TAB_MAX_SIZE 8192 | |
f6fc5049 | 32 | |
a374fef4 DH |
33 | /* FIXME: IR_KEYPRESS_TIMEOUT should be protocol specific */ |
34 | #define IR_KEYPRESS_TIMEOUT 250 | |
35 | ||
4c7b355d | 36 | /* Used to keep track of known keymaps */ |
631493ec MCC |
37 | static LIST_HEAD(rc_map_list); |
38 | static DEFINE_SPINLOCK(rc_map_lock); | |
153a60bb | 39 | static struct led_trigger *led_feedback; |
631493ec | 40 | |
d100e659 | 41 | static struct rc_map_list *seek_rc_map(const char *name) |
631493ec | 42 | { |
d100e659 | 43 | struct rc_map_list *map = NULL; |
631493ec MCC |
44 | |
45 | spin_lock(&rc_map_lock); | |
46 | list_for_each_entry(map, &rc_map_list, list) { | |
47 | if (!strcmp(name, map->map.name)) { | |
48 | spin_unlock(&rc_map_lock); | |
49 | return map; | |
50 | } | |
51 | } | |
52 | spin_unlock(&rc_map_lock); | |
53 | ||
54 | return NULL; | |
55 | } | |
56 | ||
d100e659 | 57 | struct rc_map *rc_map_get(const char *name) |
631493ec MCC |
58 | { |
59 | ||
d100e659 | 60 | struct rc_map_list *map; |
631493ec MCC |
61 | |
62 | map = seek_rc_map(name); | |
63 | #ifdef MODULE | |
64 | if (!map) { | |
8ea5488a | 65 | int rc = request_module("%s", name); |
631493ec MCC |
66 | if (rc < 0) { |
67 | printk(KERN_ERR "Couldn't load IR keymap %s\n", name); | |
68 | return NULL; | |
69 | } | |
70 | msleep(20); /* Give some time for IR to register */ | |
71 | ||
72 | map = seek_rc_map(name); | |
73 | } | |
74 | #endif | |
75 | if (!map) { | |
76 | printk(KERN_ERR "IR keymap %s not found\n", name); | |
77 | return NULL; | |
78 | } | |
79 | ||
80 | printk(KERN_INFO "Registered IR keymap %s\n", map->map.name); | |
81 | ||
82 | return &map->map; | |
83 | } | |
d100e659 | 84 | EXPORT_SYMBOL_GPL(rc_map_get); |
631493ec | 85 | |
d100e659 | 86 | int rc_map_register(struct rc_map_list *map) |
631493ec MCC |
87 | { |
88 | spin_lock(&rc_map_lock); | |
89 | list_add_tail(&map->list, &rc_map_list); | |
90 | spin_unlock(&rc_map_lock); | |
91 | return 0; | |
92 | } | |
d100e659 | 93 | EXPORT_SYMBOL_GPL(rc_map_register); |
631493ec | 94 | |
d100e659 | 95 | void rc_map_unregister(struct rc_map_list *map) |
631493ec MCC |
96 | { |
97 | spin_lock(&rc_map_lock); | |
98 | list_del(&map->list); | |
99 | spin_unlock(&rc_map_lock); | |
100 | } | |
d100e659 | 101 | EXPORT_SYMBOL_GPL(rc_map_unregister); |
631493ec MCC |
102 | |
103 | ||
2f4f58d6 | 104 | static struct rc_map_table empty[] = { |
631493ec MCC |
105 | { 0x2a, KEY_COFFEE }, |
106 | }; | |
107 | ||
d100e659 | 108 | static struct rc_map_list empty_map = { |
631493ec MCC |
109 | .map = { |
110 | .scan = empty, | |
111 | .size = ARRAY_SIZE(empty), | |
52b66144 | 112 | .rc_type = RC_TYPE_UNKNOWN, /* Legacy IR type */ |
631493ec MCC |
113 | .name = RC_MAP_EMPTY, |
114 | } | |
115 | }; | |
116 | ||
9f470095 DT |
117 | /** |
118 | * ir_create_table() - initializes a scancode table | |
b088ba65 | 119 | * @rc_map: the rc_map to initialize |
9f470095 | 120 | * @name: name to assign to the table |
52b66144 | 121 | * @rc_type: ir type to assign to the new table |
9f470095 DT |
122 | * @size: initial size of the table |
123 | * @return: zero on success or a negative error code | |
124 | * | |
b088ba65 | 125 | * This routine will initialize the rc_map and will allocate |
d8b4b582 | 126 | * memory to hold at least the specified number of elements. |
9f470095 | 127 | */ |
b088ba65 | 128 | static int ir_create_table(struct rc_map *rc_map, |
52b66144 | 129 | const char *name, u64 rc_type, size_t size) |
9f470095 | 130 | { |
b088ba65 MCC |
131 | rc_map->name = name; |
132 | rc_map->rc_type = rc_type; | |
2f4f58d6 MCC |
133 | rc_map->alloc = roundup_pow_of_two(size * sizeof(struct rc_map_table)); |
134 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); | |
b088ba65 MCC |
135 | rc_map->scan = kmalloc(rc_map->alloc, GFP_KERNEL); |
136 | if (!rc_map->scan) | |
9f470095 DT |
137 | return -ENOMEM; |
138 | ||
139 | IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", | |
b088ba65 | 140 | rc_map->size, rc_map->alloc); |
9f470095 DT |
141 | return 0; |
142 | } | |
143 | ||
144 | /** | |
145 | * ir_free_table() - frees memory allocated by a scancode table | |
b088ba65 | 146 | * @rc_map: the table whose mappings need to be freed |
9f470095 DT |
147 | * |
148 | * This routine will free memory alloctaed for key mappings used by given | |
149 | * scancode table. | |
150 | */ | |
b088ba65 | 151 | static void ir_free_table(struct rc_map *rc_map) |
9f470095 | 152 | { |
b088ba65 MCC |
153 | rc_map->size = 0; |
154 | kfree(rc_map->scan); | |
155 | rc_map->scan = NULL; | |
9f470095 DT |
156 | } |
157 | ||
7fee03e4 | 158 | /** |
b3074c0a | 159 | * ir_resize_table() - resizes a scancode table if necessary |
b088ba65 | 160 | * @rc_map: the rc_map to resize |
9f470095 | 161 | * @gfp_flags: gfp flags to use when allocating memory |
b3074c0a | 162 | * @return: zero on success or a negative error code |
7fee03e4 | 163 | * |
b088ba65 | 164 | * This routine will shrink the rc_map if it has lots of |
b3074c0a | 165 | * unused entries and grow it if it is full. |
7fee03e4 | 166 | */ |
b088ba65 | 167 | static int ir_resize_table(struct rc_map *rc_map, gfp_t gfp_flags) |
7fee03e4 | 168 | { |
b088ba65 | 169 | unsigned int oldalloc = rc_map->alloc; |
b3074c0a | 170 | unsigned int newalloc = oldalloc; |
2f4f58d6 MCC |
171 | struct rc_map_table *oldscan = rc_map->scan; |
172 | struct rc_map_table *newscan; | |
b3074c0a | 173 | |
b088ba65 | 174 | if (rc_map->size == rc_map->len) { |
b3074c0a | 175 | /* All entries in use -> grow keytable */ |
b088ba65 | 176 | if (rc_map->alloc >= IR_TAB_MAX_SIZE) |
b3074c0a | 177 | return -ENOMEM; |
7fee03e4 | 178 | |
b3074c0a DH |
179 | newalloc *= 2; |
180 | IR_dprintk(1, "Growing table to %u bytes\n", newalloc); | |
181 | } | |
7fee03e4 | 182 | |
b088ba65 | 183 | if ((rc_map->len * 3 < rc_map->size) && (oldalloc > IR_TAB_MIN_SIZE)) { |
b3074c0a DH |
184 | /* Less than 1/3 of entries in use -> shrink keytable */ |
185 | newalloc /= 2; | |
186 | IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc); | |
187 | } | |
7fee03e4 | 188 | |
b3074c0a DH |
189 | if (newalloc == oldalloc) |
190 | return 0; | |
7fee03e4 | 191 | |
9f470095 | 192 | newscan = kmalloc(newalloc, gfp_flags); |
b3074c0a DH |
193 | if (!newscan) { |
194 | IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc); | |
195 | return -ENOMEM; | |
196 | } | |
7fee03e4 | 197 | |
2f4f58d6 | 198 | memcpy(newscan, rc_map->scan, rc_map->len * sizeof(struct rc_map_table)); |
b088ba65 MCC |
199 | rc_map->scan = newscan; |
200 | rc_map->alloc = newalloc; | |
2f4f58d6 | 201 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); |
b3074c0a DH |
202 | kfree(oldscan); |
203 | return 0; | |
7fee03e4 MCC |
204 | } |
205 | ||
f6fc5049 | 206 | /** |
9f470095 | 207 | * ir_update_mapping() - set a keycode in the scancode->keycode table |
d8b4b582 | 208 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 209 | * @rc_map: scancode table to be adjusted |
9f470095 DT |
210 | * @index: index of the mapping that needs to be updated |
211 | * @keycode: the desired keycode | |
212 | * @return: previous keycode assigned to the mapping | |
213 | * | |
d8b4b582 | 214 | * This routine is used to update scancode->keycode mapping at given |
9f470095 DT |
215 | * position. |
216 | */ | |
d8b4b582 | 217 | static unsigned int ir_update_mapping(struct rc_dev *dev, |
b088ba65 | 218 | struct rc_map *rc_map, |
9f470095 DT |
219 | unsigned int index, |
220 | unsigned int new_keycode) | |
221 | { | |
b088ba65 | 222 | int old_keycode = rc_map->scan[index].keycode; |
9f470095 DT |
223 | int i; |
224 | ||
225 | /* Did the user wish to remove the mapping? */ | |
226 | if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) { | |
227 | IR_dprintk(1, "#%d: Deleting scan 0x%04x\n", | |
b088ba65 MCC |
228 | index, rc_map->scan[index].scancode); |
229 | rc_map->len--; | |
230 | memmove(&rc_map->scan[index], &rc_map->scan[index+ 1], | |
2f4f58d6 | 231 | (rc_map->len - index) * sizeof(struct rc_map_table)); |
9f470095 DT |
232 | } else { |
233 | IR_dprintk(1, "#%d: %s scan 0x%04x with key 0x%04x\n", | |
234 | index, | |
235 | old_keycode == KEY_RESERVED ? "New" : "Replacing", | |
b088ba65 MCC |
236 | rc_map->scan[index].scancode, new_keycode); |
237 | rc_map->scan[index].keycode = new_keycode; | |
d8b4b582 | 238 | __set_bit(new_keycode, dev->input_dev->keybit); |
9f470095 DT |
239 | } |
240 | ||
241 | if (old_keycode != KEY_RESERVED) { | |
242 | /* A previous mapping was updated... */ | |
d8b4b582 | 243 | __clear_bit(old_keycode, dev->input_dev->keybit); |
9f470095 | 244 | /* ... but another scancode might use the same keycode */ |
b088ba65 MCC |
245 | for (i = 0; i < rc_map->len; i++) { |
246 | if (rc_map->scan[i].keycode == old_keycode) { | |
d8b4b582 | 247 | __set_bit(old_keycode, dev->input_dev->keybit); |
9f470095 DT |
248 | break; |
249 | } | |
250 | } | |
251 | ||
252 | /* Possibly shrink the keytable, failure is not a problem */ | |
b088ba65 | 253 | ir_resize_table(rc_map, GFP_ATOMIC); |
9f470095 DT |
254 | } |
255 | ||
256 | return old_keycode; | |
257 | } | |
258 | ||
259 | /** | |
4c7b355d | 260 | * ir_establish_scancode() - set a keycode in the scancode->keycode table |
d8b4b582 | 261 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 262 | * @rc_map: scancode table to be searched |
9f470095 DT |
263 | * @scancode: the desired scancode |
264 | * @resize: controls whether we allowed to resize the table to | |
25985edc | 265 | * accommodate not yet present scancodes |
9f470095 DT |
266 | * @return: index of the mapping containing scancode in question |
267 | * or -1U in case of failure. | |
f6fc5049 | 268 | * |
b088ba65 | 269 | * This routine is used to locate given scancode in rc_map. |
9f470095 DT |
270 | * If scancode is not yet present the routine will allocate a new slot |
271 | * for it. | |
f6fc5049 | 272 | */ |
d8b4b582 | 273 | static unsigned int ir_establish_scancode(struct rc_dev *dev, |
b088ba65 | 274 | struct rc_map *rc_map, |
9f470095 DT |
275 | unsigned int scancode, |
276 | bool resize) | |
f6fc5049 | 277 | { |
b3074c0a | 278 | unsigned int i; |
9dfe4e83 MCC |
279 | |
280 | /* | |
281 | * Unfortunately, some hardware-based IR decoders don't provide | |
282 | * all bits for the complete IR code. In general, they provide only | |
283 | * the command part of the IR code. Yet, as it is possible to replace | |
284 | * the provided IR with another one, it is needed to allow loading | |
d8b4b582 DH |
285 | * IR tables from other remotes. So, we support specifying a mask to |
286 | * indicate the valid bits of the scancodes. | |
9dfe4e83 | 287 | */ |
d8b4b582 DH |
288 | if (dev->scanmask) |
289 | scancode &= dev->scanmask; | |
b3074c0a DH |
290 | |
291 | /* First check if we already have a mapping for this ir command */ | |
b088ba65 MCC |
292 | for (i = 0; i < rc_map->len; i++) { |
293 | if (rc_map->scan[i].scancode == scancode) | |
9f470095 DT |
294 | return i; |
295 | ||
b3074c0a | 296 | /* Keytable is sorted from lowest to highest scancode */ |
b088ba65 | 297 | if (rc_map->scan[i].scancode >= scancode) |
b3074c0a | 298 | break; |
b3074c0a | 299 | } |
f6fc5049 | 300 | |
9f470095 | 301 | /* No previous mapping found, we might need to grow the table */ |
b088ba65 MCC |
302 | if (rc_map->size == rc_map->len) { |
303 | if (!resize || ir_resize_table(rc_map, GFP_ATOMIC)) | |
9f470095 DT |
304 | return -1U; |
305 | } | |
35438946 | 306 | |
9f470095 | 307 | /* i is the proper index to insert our new keycode */ |
b088ba65 MCC |
308 | if (i < rc_map->len) |
309 | memmove(&rc_map->scan[i + 1], &rc_map->scan[i], | |
2f4f58d6 | 310 | (rc_map->len - i) * sizeof(struct rc_map_table)); |
b088ba65 MCC |
311 | rc_map->scan[i].scancode = scancode; |
312 | rc_map->scan[i].keycode = KEY_RESERVED; | |
313 | rc_map->len++; | |
f6fc5049 | 314 | |
9f470095 | 315 | return i; |
f6fc5049 MCC |
316 | } |
317 | ||
ef53a115 | 318 | /** |
b3074c0a | 319 | * ir_setkeycode() - set a keycode in the scancode->keycode table |
d8b4b582 | 320 | * @idev: the struct input_dev device descriptor |
ef53a115 | 321 | * @scancode: the desired scancode |
b3074c0a DH |
322 | * @keycode: result |
323 | * @return: -EINVAL if the keycode could not be inserted, otherwise zero. | |
ef53a115 | 324 | * |
b3074c0a | 325 | * This routine is used to handle evdev EVIOCSKEY ioctl. |
ef53a115 | 326 | */ |
d8b4b582 | 327 | static int ir_setkeycode(struct input_dev *idev, |
9f470095 DT |
328 | const struct input_keymap_entry *ke, |
329 | unsigned int *old_keycode) | |
ef53a115 | 330 | { |
d8b4b582 | 331 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 332 | struct rc_map *rc_map = &rdev->rc_map; |
9f470095 DT |
333 | unsigned int index; |
334 | unsigned int scancode; | |
dea8a39f | 335 | int retval = 0; |
9f470095 | 336 | unsigned long flags; |
ef53a115 | 337 | |
b088ba65 | 338 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
339 | |
340 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
341 | index = ke->index; | |
b088ba65 | 342 | if (index >= rc_map->len) { |
9f470095 DT |
343 | retval = -EINVAL; |
344 | goto out; | |
345 | } | |
346 | } else { | |
347 | retval = input_scancode_to_scalar(ke, &scancode); | |
348 | if (retval) | |
349 | goto out; | |
350 | ||
b088ba65 MCC |
351 | index = ir_establish_scancode(rdev, rc_map, scancode, true); |
352 | if (index >= rc_map->len) { | |
9f470095 DT |
353 | retval = -ENOMEM; |
354 | goto out; | |
355 | } | |
356 | } | |
357 | ||
b088ba65 | 358 | *old_keycode = ir_update_mapping(rdev, rc_map, index, ke->keycode); |
9f470095 DT |
359 | |
360 | out: | |
b088ba65 | 361 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 362 | return retval; |
e97f4677 MCC |
363 | } |
364 | ||
365 | /** | |
b3074c0a | 366 | * ir_setkeytable() - sets several entries in the scancode->keycode table |
d8b4b582 | 367 | * @dev: the struct rc_dev device descriptor |
b088ba65 MCC |
368 | * @to: the struct rc_map to copy entries to |
369 | * @from: the struct rc_map to copy entries from | |
9f470095 | 370 | * @return: -ENOMEM if all keycodes could not be inserted, otherwise zero. |
e97f4677 | 371 | * |
b3074c0a | 372 | * This routine is used to handle table initialization. |
e97f4677 | 373 | */ |
d8b4b582 | 374 | static int ir_setkeytable(struct rc_dev *dev, |
b088ba65 | 375 | const struct rc_map *from) |
e97f4677 | 376 | { |
b088ba65 | 377 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
378 | unsigned int i, index; |
379 | int rc; | |
380 | ||
b088ba65 | 381 | rc = ir_create_table(rc_map, from->name, |
52b66144 | 382 | from->rc_type, from->size); |
9f470095 DT |
383 | if (rc) |
384 | return rc; | |
385 | ||
386 | IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", | |
b088ba65 | 387 | rc_map->size, rc_map->alloc); |
e97f4677 | 388 | |
b3074c0a | 389 | for (i = 0; i < from->size; i++) { |
b088ba65 | 390 | index = ir_establish_scancode(dev, rc_map, |
9f470095 | 391 | from->scan[i].scancode, false); |
b088ba65 | 392 | if (index >= rc_map->len) { |
9f470095 | 393 | rc = -ENOMEM; |
b3074c0a | 394 | break; |
9f470095 DT |
395 | } |
396 | ||
b088ba65 | 397 | ir_update_mapping(dev, rc_map, index, |
9f470095 | 398 | from->scan[i].keycode); |
e97f4677 | 399 | } |
9f470095 DT |
400 | |
401 | if (rc) | |
b088ba65 | 402 | ir_free_table(rc_map); |
9f470095 | 403 | |
b3074c0a | 404 | return rc; |
ef53a115 MCC |
405 | } |
406 | ||
9f470095 DT |
407 | /** |
408 | * ir_lookup_by_scancode() - locate mapping by scancode | |
b088ba65 | 409 | * @rc_map: the struct rc_map to search |
9f470095 DT |
410 | * @scancode: scancode to look for in the table |
411 | * @return: index in the table, -1U if not found | |
412 | * | |
413 | * This routine performs binary search in RC keykeymap table for | |
414 | * given scancode. | |
415 | */ | |
b088ba65 | 416 | static unsigned int ir_lookup_by_scancode(const struct rc_map *rc_map, |
9f470095 DT |
417 | unsigned int scancode) |
418 | { | |
0d07025e | 419 | int start = 0; |
b088ba65 | 420 | int end = rc_map->len - 1; |
0d07025e | 421 | int mid; |
9f470095 DT |
422 | |
423 | while (start <= end) { | |
424 | mid = (start + end) / 2; | |
b088ba65 | 425 | if (rc_map->scan[mid].scancode < scancode) |
9f470095 | 426 | start = mid + 1; |
b088ba65 | 427 | else if (rc_map->scan[mid].scancode > scancode) |
9f470095 DT |
428 | end = mid - 1; |
429 | else | |
430 | return mid; | |
431 | } | |
432 | ||
433 | return -1U; | |
434 | } | |
435 | ||
ef53a115 | 436 | /** |
b3074c0a | 437 | * ir_getkeycode() - get a keycode from the scancode->keycode table |
d8b4b582 | 438 | * @idev: the struct input_dev device descriptor |
ef53a115 | 439 | * @scancode: the desired scancode |
b3074c0a DH |
440 | * @keycode: used to return the keycode, if found, or KEY_RESERVED |
441 | * @return: always returns zero. | |
ef53a115 | 442 | * |
b3074c0a | 443 | * This routine is used to handle evdev EVIOCGKEY ioctl. |
ef53a115 | 444 | */ |
d8b4b582 | 445 | static int ir_getkeycode(struct input_dev *idev, |
9f470095 | 446 | struct input_keymap_entry *ke) |
ef53a115 | 447 | { |
d8b4b582 | 448 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 449 | struct rc_map *rc_map = &rdev->rc_map; |
2f4f58d6 | 450 | struct rc_map_table *entry; |
9f470095 DT |
451 | unsigned long flags; |
452 | unsigned int index; | |
453 | unsigned int scancode; | |
454 | int retval; | |
ef53a115 | 455 | |
b088ba65 | 456 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
457 | |
458 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
459 | index = ke->index; | |
460 | } else { | |
461 | retval = input_scancode_to_scalar(ke, &scancode); | |
462 | if (retval) | |
463 | goto out; | |
464 | ||
b088ba65 | 465 | index = ir_lookup_by_scancode(rc_map, scancode); |
9f470095 DT |
466 | } |
467 | ||
54e74b87 DT |
468 | if (index < rc_map->len) { |
469 | entry = &rc_map->scan[index]; | |
470 | ||
471 | ke->index = index; | |
472 | ke->keycode = entry->keycode; | |
473 | ke->len = sizeof(entry->scancode); | |
474 | memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode)); | |
475 | ||
476 | } else if (!(ke->flags & INPUT_KEYMAP_BY_INDEX)) { | |
477 | /* | |
478 | * We do not really know the valid range of scancodes | |
479 | * so let's respond with KEY_RESERVED to anything we | |
480 | * do not have mapping for [yet]. | |
481 | */ | |
482 | ke->index = index; | |
483 | ke->keycode = KEY_RESERVED; | |
484 | } else { | |
9f470095 DT |
485 | retval = -EINVAL; |
486 | goto out; | |
e97f4677 MCC |
487 | } |
488 | ||
47c5ba53 DT |
489 | retval = 0; |
490 | ||
9f470095 | 491 | out: |
b088ba65 | 492 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 493 | return retval; |
ef53a115 MCC |
494 | } |
495 | ||
496 | /** | |
ca86674b | 497 | * rc_g_keycode_from_table() - gets the keycode that corresponds to a scancode |
d8b4b582 DH |
498 | * @dev: the struct rc_dev descriptor of the device |
499 | * @scancode: the scancode to look for | |
500 | * @return: the corresponding keycode, or KEY_RESERVED | |
ef53a115 | 501 | * |
d8b4b582 DH |
502 | * This routine is used by drivers which need to convert a scancode to a |
503 | * keycode. Normally it should not be used since drivers should have no | |
504 | * interest in keycodes. | |
ef53a115 | 505 | */ |
ca86674b | 506 | u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode) |
ef53a115 | 507 | { |
b088ba65 | 508 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
509 | unsigned int keycode; |
510 | unsigned int index; | |
511 | unsigned long flags; | |
512 | ||
b088ba65 | 513 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 | 514 | |
b088ba65 MCC |
515 | index = ir_lookup_by_scancode(rc_map, scancode); |
516 | keycode = index < rc_map->len ? | |
517 | rc_map->scan[index].keycode : KEY_RESERVED; | |
9f470095 | 518 | |
b088ba65 | 519 | spin_unlock_irqrestore(&rc_map->lock, flags); |
ef53a115 | 520 | |
35438946 MCC |
521 | if (keycode != KEY_RESERVED) |
522 | IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n", | |
d8b4b582 | 523 | dev->input_name, scancode, keycode); |
9f470095 | 524 | |
b3074c0a | 525 | return keycode; |
ef53a115 | 526 | } |
ca86674b | 527 | EXPORT_SYMBOL_GPL(rc_g_keycode_from_table); |
ef53a115 | 528 | |
6660de56 | 529 | /** |
62c65031 | 530 | * ir_do_keyup() - internal function to signal the release of a keypress |
d8b4b582 | 531 | * @dev: the struct rc_dev descriptor of the device |
98c32bcd | 532 | * @sync: whether or not to call input_sync |
6660de56 | 533 | * |
62c65031 DH |
534 | * This function is used internally to release a keypress, it must be |
535 | * called with keylock held. | |
a374fef4 | 536 | */ |
98c32bcd | 537 | static void ir_do_keyup(struct rc_dev *dev, bool sync) |
a374fef4 | 538 | { |
d8b4b582 | 539 | if (!dev->keypressed) |
a374fef4 DH |
540 | return; |
541 | ||
d8b4b582 DH |
542 | IR_dprintk(1, "keyup key 0x%04x\n", dev->last_keycode); |
543 | input_report_key(dev->input_dev, dev->last_keycode, 0); | |
153a60bb | 544 | led_trigger_event(led_feedback, LED_OFF); |
98c32bcd JW |
545 | if (sync) |
546 | input_sync(dev->input_dev); | |
d8b4b582 | 547 | dev->keypressed = false; |
a374fef4 | 548 | } |
62c65031 DH |
549 | |
550 | /** | |
ca86674b | 551 | * rc_keyup() - signals the release of a keypress |
d8b4b582 | 552 | * @dev: the struct rc_dev descriptor of the device |
62c65031 DH |
553 | * |
554 | * This routine is used to signal that a key has been released on the | |
555 | * remote control. | |
556 | */ | |
ca86674b | 557 | void rc_keyup(struct rc_dev *dev) |
62c65031 DH |
558 | { |
559 | unsigned long flags; | |
62c65031 | 560 | |
d8b4b582 | 561 | spin_lock_irqsave(&dev->keylock, flags); |
98c32bcd | 562 | ir_do_keyup(dev, true); |
d8b4b582 | 563 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 564 | } |
ca86674b | 565 | EXPORT_SYMBOL_GPL(rc_keyup); |
a374fef4 DH |
566 | |
567 | /** | |
568 | * ir_timer_keyup() - generates a keyup event after a timeout | |
d8b4b582 | 569 | * @cookie: a pointer to the struct rc_dev for the device |
a374fef4 DH |
570 | * |
571 | * This routine will generate a keyup event some time after a keydown event | |
572 | * is generated when no further activity has been detected. | |
6660de56 | 573 | */ |
a374fef4 | 574 | static void ir_timer_keyup(unsigned long cookie) |
6660de56 | 575 | { |
d8b4b582 | 576 | struct rc_dev *dev = (struct rc_dev *)cookie; |
a374fef4 DH |
577 | unsigned long flags; |
578 | ||
579 | /* | |
580 | * ir->keyup_jiffies is used to prevent a race condition if a | |
581 | * hardware interrupt occurs at this point and the keyup timer | |
582 | * event is moved further into the future as a result. | |
583 | * | |
584 | * The timer will then be reactivated and this function called | |
585 | * again in the future. We need to exit gracefully in that case | |
586 | * to allow the input subsystem to do its auto-repeat magic or | |
587 | * a keyup event might follow immediately after the keydown. | |
588 | */ | |
d8b4b582 DH |
589 | spin_lock_irqsave(&dev->keylock, flags); |
590 | if (time_is_before_eq_jiffies(dev->keyup_jiffies)) | |
98c32bcd | 591 | ir_do_keyup(dev, true); |
d8b4b582 | 592 | spin_unlock_irqrestore(&dev->keylock, flags); |
a374fef4 DH |
593 | } |
594 | ||
595 | /** | |
ca86674b | 596 | * rc_repeat() - signals that a key is still pressed |
d8b4b582 | 597 | * @dev: the struct rc_dev descriptor of the device |
a374fef4 DH |
598 | * |
599 | * This routine is used by IR decoders when a repeat message which does | |
600 | * not include the necessary bits to reproduce the scancode has been | |
601 | * received. | |
602 | */ | |
ca86674b | 603 | void rc_repeat(struct rc_dev *dev) |
a374fef4 DH |
604 | { |
605 | unsigned long flags; | |
6660de56 | 606 | |
d8b4b582 | 607 | spin_lock_irqsave(&dev->keylock, flags); |
a374fef4 | 608 | |
d8b4b582 | 609 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, dev->last_scancode); |
98c32bcd | 610 | input_sync(dev->input_dev); |
ed4d3876 | 611 | |
d8b4b582 | 612 | if (!dev->keypressed) |
a374fef4 | 613 | goto out; |
6660de56 | 614 | |
d8b4b582 DH |
615 | dev->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT); |
616 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); | |
a374fef4 DH |
617 | |
618 | out: | |
d8b4b582 | 619 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 620 | } |
ca86674b | 621 | EXPORT_SYMBOL_GPL(rc_repeat); |
6660de56 MCC |
622 | |
623 | /** | |
62c65031 | 624 | * ir_do_keydown() - internal function to process a keypress |
d8b4b582 | 625 | * @dev: the struct rc_dev descriptor of the device |
120703f9 | 626 | * @protocol: the protocol of the keypress |
62c65031 DH |
627 | * @scancode: the scancode of the keypress |
628 | * @keycode: the keycode of the keypress | |
629 | * @toggle: the toggle value of the keypress | |
6660de56 | 630 | * |
62c65031 DH |
631 | * This function is used internally to register a keypress, it must be |
632 | * called with keylock held. | |
6660de56 | 633 | */ |
120703f9 DH |
634 | static void ir_do_keydown(struct rc_dev *dev, enum rc_type protocol, |
635 | u32 scancode, u32 keycode, u8 toggle) | |
6660de56 | 636 | { |
99b0f3c9 | 637 | bool new_event = (!dev->keypressed || |
120703f9 | 638 | dev->last_protocol != protocol || |
99b0f3c9 | 639 | dev->last_scancode != scancode || |
120703f9 | 640 | dev->last_toggle != toggle); |
6660de56 | 641 | |
98c32bcd JW |
642 | if (new_event && dev->keypressed) |
643 | ir_do_keyup(dev, false); | |
6660de56 | 644 | |
98c32bcd | 645 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode); |
a374fef4 | 646 | |
98c32bcd JW |
647 | if (new_event && keycode != KEY_RESERVED) { |
648 | /* Register a keypress */ | |
649 | dev->keypressed = true; | |
120703f9 | 650 | dev->last_protocol = protocol; |
98c32bcd JW |
651 | dev->last_scancode = scancode; |
652 | dev->last_toggle = toggle; | |
653 | dev->last_keycode = keycode; | |
654 | ||
655 | IR_dprintk(1, "%s: key down event, " | |
120703f9 DH |
656 | "key 0x%04x, protocol 0x%04x, scancode 0x%08x\n", |
657 | dev->input_name, keycode, protocol, scancode); | |
98c32bcd | 658 | input_report_key(dev->input_dev, keycode, 1); |
70a2f912 JH |
659 | |
660 | led_trigger_event(led_feedback, LED_FULL); | |
98c32bcd | 661 | } |
ed4d3876 | 662 | |
d8b4b582 | 663 | input_sync(dev->input_dev); |
62c65031 | 664 | } |
6660de56 | 665 | |
62c65031 | 666 | /** |
ca86674b | 667 | * rc_keydown() - generates input event for a key press |
d8b4b582 | 668 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
669 | * @protocol: the protocol for the keypress |
670 | * @scancode: the scancode for the keypress | |
62c65031 DH |
671 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
672 | * support toggle values, this should be set to zero) | |
673 | * | |
d8b4b582 DH |
674 | * This routine is used to signal that a key has been pressed on the |
675 | * remote control. | |
62c65031 | 676 | */ |
120703f9 | 677 | void rc_keydown(struct rc_dev *dev, enum rc_type protocol, u32 scancode, u8 toggle) |
62c65031 DH |
678 | { |
679 | unsigned long flags; | |
ca86674b | 680 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 681 | |
d8b4b582 | 682 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 683 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
62c65031 | 684 | |
d8b4b582 DH |
685 | if (dev->keypressed) { |
686 | dev->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT); | |
687 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); | |
62c65031 | 688 | } |
d8b4b582 | 689 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 690 | } |
ca86674b | 691 | EXPORT_SYMBOL_GPL(rc_keydown); |
6660de56 | 692 | |
62c65031 | 693 | /** |
ca86674b | 694 | * rc_keydown_notimeout() - generates input event for a key press without |
62c65031 | 695 | * an automatic keyup event at a later time |
d8b4b582 | 696 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
697 | * @protocol: the protocol for the keypress |
698 | * @scancode: the scancode for the keypress | |
62c65031 DH |
699 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
700 | * support toggle values, this should be set to zero) | |
701 | * | |
d8b4b582 | 702 | * This routine is used to signal that a key has been pressed on the |
ca86674b | 703 | * remote control. The driver must manually call rc_keyup() at a later stage. |
62c65031 | 704 | */ |
120703f9 DH |
705 | void rc_keydown_notimeout(struct rc_dev *dev, enum rc_type protocol, |
706 | u32 scancode, u8 toggle) | |
62c65031 DH |
707 | { |
708 | unsigned long flags; | |
ca86674b | 709 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 710 | |
d8b4b582 | 711 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 712 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
d8b4b582 | 713 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 714 | } |
ca86674b | 715 | EXPORT_SYMBOL_GPL(rc_keydown_notimeout); |
62c65031 | 716 | |
8b2ff320 SK |
717 | int rc_open(struct rc_dev *rdev) |
718 | { | |
719 | int rval = 0; | |
720 | ||
721 | if (!rdev) | |
722 | return -EINVAL; | |
723 | ||
724 | mutex_lock(&rdev->lock); | |
f02dcdd1 | 725 | if (!rdev->users++ && rdev->open != NULL) |
8b2ff320 SK |
726 | rval = rdev->open(rdev); |
727 | ||
728 | if (rval) | |
729 | rdev->users--; | |
730 | ||
731 | mutex_unlock(&rdev->lock); | |
732 | ||
733 | return rval; | |
734 | } | |
735 | EXPORT_SYMBOL_GPL(rc_open); | |
736 | ||
d8b4b582 | 737 | static int ir_open(struct input_dev *idev) |
ef53a115 | 738 | { |
d8b4b582 | 739 | struct rc_dev *rdev = input_get_drvdata(idev); |
75543cce | 740 | |
8b2ff320 SK |
741 | return rc_open(rdev); |
742 | } | |
743 | ||
744 | void rc_close(struct rc_dev *rdev) | |
745 | { | |
746 | if (rdev) { | |
747 | mutex_lock(&rdev->lock); | |
748 | ||
f02dcdd1 | 749 | if (!--rdev->users && rdev->close != NULL) |
8b2ff320 SK |
750 | rdev->close(rdev); |
751 | ||
752 | mutex_unlock(&rdev->lock); | |
753 | } | |
ef53a115 | 754 | } |
8b2ff320 | 755 | EXPORT_SYMBOL_GPL(rc_close); |
d4b778d3 | 756 | |
d8b4b582 | 757 | static void ir_close(struct input_dev *idev) |
f6fc5049 | 758 | { |
d8b4b582 | 759 | struct rc_dev *rdev = input_get_drvdata(idev); |
8b2ff320 | 760 | rc_close(rdev); |
f6fc5049 | 761 | } |
f6fc5049 | 762 | |
bc2a6c57 | 763 | /* class for /sys/class/rc */ |
40fc5325 | 764 | static char *rc_devnode(struct device *dev, umode_t *mode) |
bc2a6c57 MCC |
765 | { |
766 | return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); | |
767 | } | |
768 | ||
40fc5325 | 769 | static struct class rc_class = { |
bc2a6c57 | 770 | .name = "rc", |
40fc5325 | 771 | .devnode = rc_devnode, |
bc2a6c57 MCC |
772 | }; |
773 | ||
c003ab1b DH |
774 | /* |
775 | * These are the protocol textual descriptions that are | |
776 | * used by the sysfs protocols file. Note that the order | |
777 | * of the entries is relevant. | |
778 | */ | |
bc2a6c57 MCC |
779 | static struct { |
780 | u64 type; | |
781 | char *name; | |
782 | } proto_names[] = { | |
c003ab1b DH |
783 | { RC_BIT_NONE, "none" }, |
784 | { RC_BIT_OTHER, "other" }, | |
785 | { RC_BIT_UNKNOWN, "unknown" }, | |
786 | { RC_BIT_RC5 | | |
787 | RC_BIT_RC5X, "rc-5" }, | |
788 | { RC_BIT_NEC, "nec" }, | |
789 | { RC_BIT_RC6_0 | | |
790 | RC_BIT_RC6_6A_20 | | |
791 | RC_BIT_RC6_6A_24 | | |
792 | RC_BIT_RC6_6A_32 | | |
793 | RC_BIT_RC6_MCE, "rc-6" }, | |
794 | { RC_BIT_JVC, "jvc" }, | |
795 | { RC_BIT_SONY12 | | |
796 | RC_BIT_SONY15 | | |
797 | RC_BIT_SONY20, "sony" }, | |
798 | { RC_BIT_RC5_SZ, "rc-5-sz" }, | |
799 | { RC_BIT_SANYO, "sanyo" }, | |
38f2a214 | 800 | { RC_BIT_SHARP, "sharp" }, |
c003ab1b DH |
801 | { RC_BIT_MCE_KBD, "mce_kbd" }, |
802 | { RC_BIT_LIRC, "lirc" }, | |
bc2a6c57 MCC |
803 | }; |
804 | ||
bc2a6c57 | 805 | /** |
ab88c66d JH |
806 | * struct rc_filter_attribute - Device attribute relating to a filter type. |
807 | * @attr: Device attribute. | |
808 | * @type: Filter type. | |
809 | * @mask: false for filter value, true for filter mask. | |
810 | */ | |
811 | struct rc_filter_attribute { | |
812 | struct device_attribute attr; | |
813 | enum rc_filter_type type; | |
814 | bool mask; | |
815 | }; | |
816 | #define to_rc_filter_attr(a) container_of(a, struct rc_filter_attribute, attr) | |
817 | ||
818 | #define RC_PROTO_ATTR(_name, _mode, _show, _store, _type) \ | |
819 | struct rc_filter_attribute dev_attr_##_name = { \ | |
820 | .attr = __ATTR(_name, _mode, _show, _store), \ | |
821 | .type = (_type), \ | |
822 | } | |
823 | #define RC_FILTER_ATTR(_name, _mode, _show, _store, _type, _mask) \ | |
824 | struct rc_filter_attribute dev_attr_##_name = { \ | |
825 | .attr = __ATTR(_name, _mode, _show, _store), \ | |
826 | .type = (_type), \ | |
827 | .mask = (_mask), \ | |
828 | } | |
829 | ||
830 | /** | |
831 | * show_protocols() - shows the current/wakeup IR protocol(s) | |
d8b4b582 | 832 | * @device: the device descriptor |
da6e162d | 833 | * @mattr: the device attribute struct |
bc2a6c57 MCC |
834 | * @buf: a pointer to the output buffer |
835 | * | |
836 | * This routine is a callback routine for input read the IR protocol type(s). | |
ab88c66d | 837 | * it is trigged by reading /sys/class/rc/rc?/[wakeup_]protocols. |
bc2a6c57 MCC |
838 | * It returns the protocol names of supported protocols. |
839 | * Enabled protocols are printed in brackets. | |
08aeb7c9 JW |
840 | * |
841 | * dev->lock is taken to guard against races between device | |
842 | * registration, store_protocols and show_protocols. | |
bc2a6c57 | 843 | */ |
d8b4b582 | 844 | static ssize_t show_protocols(struct device *device, |
bc2a6c57 MCC |
845 | struct device_attribute *mattr, char *buf) |
846 | { | |
d8b4b582 | 847 | struct rc_dev *dev = to_rc_dev(device); |
ab88c66d | 848 | struct rc_filter_attribute *fattr = to_rc_filter_attr(mattr); |
bc2a6c57 MCC |
849 | u64 allowed, enabled; |
850 | char *tmp = buf; | |
851 | int i; | |
852 | ||
853 | /* Device is being removed */ | |
d8b4b582 | 854 | if (!dev) |
bc2a6c57 MCC |
855 | return -EINVAL; |
856 | ||
08aeb7c9 JW |
857 | mutex_lock(&dev->lock); |
858 | ||
da6e162d | 859 | if (fattr->type == RC_FILTER_NORMAL) { |
c5540fbb | 860 | enabled = dev->enabled_protocols; |
da6e162d DH |
861 | if (dev->raw) |
862 | allowed = ir_raw_get_allowed_protocols(); | |
863 | else | |
c5540fbb | 864 | allowed = dev->allowed_protocols; |
da6e162d | 865 | } else { |
c5540fbb DH |
866 | enabled = dev->enabled_wakeup_protocols; |
867 | allowed = dev->allowed_wakeup_protocols; | |
30ebc5e4 | 868 | } |
bc2a6c57 | 869 | |
da6e162d DH |
870 | mutex_unlock(&dev->lock); |
871 | ||
872 | IR_dprintk(1, "%s: allowed - 0x%llx, enabled - 0x%llx\n", | |
873 | __func__, (long long)allowed, (long long)enabled); | |
bc2a6c57 MCC |
874 | |
875 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
876 | if (allowed & enabled & proto_names[i].type) | |
877 | tmp += sprintf(tmp, "[%s] ", proto_names[i].name); | |
878 | else if (allowed & proto_names[i].type) | |
879 | tmp += sprintf(tmp, "%s ", proto_names[i].name); | |
c003ab1b DH |
880 | |
881 | if (allowed & proto_names[i].type) | |
882 | allowed &= ~proto_names[i].type; | |
bc2a6c57 MCC |
883 | } |
884 | ||
885 | if (tmp != buf) | |
886 | tmp--; | |
887 | *tmp = '\n'; | |
08aeb7c9 | 888 | |
bc2a6c57 MCC |
889 | return tmp + 1 - buf; |
890 | } | |
891 | ||
892 | /** | |
da6e162d DH |
893 | * parse_protocol_change() - parses a protocol change request |
894 | * @protocols: pointer to the bitmask of current protocols | |
895 | * @buf: pointer to the buffer with a list of changes | |
bc2a6c57 | 896 | * |
da6e162d DH |
897 | * Writing "+proto" will add a protocol to the protocol mask. |
898 | * Writing "-proto" will remove a protocol from protocol mask. | |
bc2a6c57 MCC |
899 | * Writing "proto" will enable only "proto". |
900 | * Writing "none" will disable all protocols. | |
da6e162d | 901 | * Returns the number of changes performed or a negative error code. |
bc2a6c57 | 902 | */ |
da6e162d | 903 | static int parse_protocol_change(u64 *protocols, const char *buf) |
bc2a6c57 | 904 | { |
bc2a6c57 | 905 | const char *tmp; |
da6e162d DH |
906 | unsigned count = 0; |
907 | bool enable, disable; | |
bc2a6c57 | 908 | u64 mask; |
da6e162d | 909 | int i; |
bc2a6c57 | 910 | |
da6e162d | 911 | while ((tmp = strsep((char **)&buf, " \n")) != NULL) { |
bc2a6c57 MCC |
912 | if (!*tmp) |
913 | break; | |
914 | ||
915 | if (*tmp == '+') { | |
916 | enable = true; | |
917 | disable = false; | |
918 | tmp++; | |
919 | } else if (*tmp == '-') { | |
920 | enable = false; | |
921 | disable = true; | |
922 | tmp++; | |
923 | } else { | |
924 | enable = false; | |
925 | disable = false; | |
926 | } | |
927 | ||
c003ab1b DH |
928 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { |
929 | if (!strcasecmp(tmp, proto_names[i].name)) { | |
930 | mask = proto_names[i].type; | |
931 | break; | |
bc2a6c57 | 932 | } |
bc2a6c57 MCC |
933 | } |
934 | ||
c003ab1b DH |
935 | if (i == ARRAY_SIZE(proto_names)) { |
936 | IR_dprintk(1, "Unknown protocol: '%s'\n", tmp); | |
da6e162d | 937 | return -EINVAL; |
c003ab1b DH |
938 | } |
939 | ||
940 | count++; | |
941 | ||
bc2a6c57 | 942 | if (enable) |
da6e162d | 943 | *protocols |= mask; |
bc2a6c57 | 944 | else if (disable) |
da6e162d | 945 | *protocols &= ~mask; |
bc2a6c57 | 946 | else |
da6e162d | 947 | *protocols = mask; |
bc2a6c57 MCC |
948 | } |
949 | ||
950 | if (!count) { | |
951 | IR_dprintk(1, "Protocol not specified\n"); | |
da6e162d DH |
952 | return -EINVAL; |
953 | } | |
954 | ||
955 | return count; | |
956 | } | |
957 | ||
958 | /** | |
959 | * store_protocols() - changes the current/wakeup IR protocol(s) | |
960 | * @device: the device descriptor | |
961 | * @mattr: the device attribute struct | |
962 | * @buf: a pointer to the input buffer | |
963 | * @len: length of the input buffer | |
964 | * | |
965 | * This routine is for changing the IR protocol type. | |
966 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]protocols. | |
967 | * See parse_protocol_change() for the valid commands. | |
968 | * Returns @len on success or a negative error code. | |
969 | * | |
970 | * dev->lock is taken to guard against races between device | |
971 | * registration, store_protocols and show_protocols. | |
972 | */ | |
973 | static ssize_t store_protocols(struct device *device, | |
974 | struct device_attribute *mattr, | |
975 | const char *buf, size_t len) | |
976 | { | |
977 | struct rc_dev *dev = to_rc_dev(device); | |
978 | struct rc_filter_attribute *fattr = to_rc_filter_attr(mattr); | |
979 | u64 *current_protocols; | |
980 | int (*change_protocol)(struct rc_dev *dev, u64 *rc_type); | |
981 | struct rc_scancode_filter *filter; | |
982 | int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter); | |
983 | u64 old_protocols, new_protocols; | |
984 | ssize_t rc; | |
985 | ||
986 | /* Device is being removed */ | |
987 | if (!dev) | |
988 | return -EINVAL; | |
989 | ||
990 | if (fattr->type == RC_FILTER_NORMAL) { | |
991 | IR_dprintk(1, "Normal protocol change requested\n"); | |
c5540fbb | 992 | current_protocols = &dev->enabled_protocols; |
da6e162d | 993 | change_protocol = dev->change_protocol; |
c5540fbb | 994 | filter = &dev->scancode_filter; |
da6e162d DH |
995 | set_filter = dev->s_filter; |
996 | } else { | |
997 | IR_dprintk(1, "Wakeup protocol change requested\n"); | |
c5540fbb | 998 | current_protocols = &dev->enabled_wakeup_protocols; |
da6e162d | 999 | change_protocol = dev->change_wakeup_protocol; |
c5540fbb | 1000 | filter = &dev->scancode_wakeup_filter; |
da6e162d DH |
1001 | set_filter = dev->s_wakeup_filter; |
1002 | } | |
1003 | ||
1004 | if (!change_protocol) { | |
1005 | IR_dprintk(1, "Protocol switching not supported\n"); | |
1006 | return -EINVAL; | |
1007 | } | |
1008 | ||
1009 | mutex_lock(&dev->lock); | |
1010 | ||
1011 | old_protocols = *current_protocols; | |
1012 | new_protocols = old_protocols; | |
1013 | rc = parse_protocol_change(&new_protocols, buf); | |
1014 | if (rc < 0) | |
1015 | goto out; | |
1016 | ||
1017 | rc = change_protocol(dev, &new_protocols); | |
1018 | if (rc < 0) { | |
1019 | IR_dprintk(1, "Error setting protocols to 0x%llx\n", | |
1020 | (long long)new_protocols); | |
08aeb7c9 | 1021 | goto out; |
bc2a6c57 MCC |
1022 | } |
1023 | ||
da6e162d DH |
1024 | if (new_protocols == old_protocols) { |
1025 | rc = len; | |
1026 | goto out; | |
bc2a6c57 MCC |
1027 | } |
1028 | ||
da6e162d DH |
1029 | *current_protocols = new_protocols; |
1030 | IR_dprintk(1, "Protocols changed to 0x%llx\n", (long long)new_protocols); | |
bc2a6c57 | 1031 | |
6bea25af JH |
1032 | /* |
1033 | * If the protocol is changed the filter needs updating. | |
1034 | * Try setting the same filter with the new protocol (if any). | |
1035 | * Fall back to clearing the filter. | |
1036 | */ | |
da6e162d DH |
1037 | if (set_filter && filter->mask) { |
1038 | if (new_protocols) | |
1039 | rc = set_filter(dev, filter); | |
1040 | else | |
1041 | rc = -1; | |
6bea25af | 1042 | |
da6e162d DH |
1043 | if (rc < 0) { |
1044 | filter->data = 0; | |
1045 | filter->mask = 0; | |
1046 | set_filter(dev, filter); | |
1047 | } | |
6bea25af JH |
1048 | } |
1049 | ||
da6e162d | 1050 | rc = len; |
08aeb7c9 JW |
1051 | |
1052 | out: | |
1053 | mutex_unlock(&dev->lock); | |
da6e162d | 1054 | return rc; |
bc2a6c57 MCC |
1055 | } |
1056 | ||
00942d1a JH |
1057 | /** |
1058 | * show_filter() - shows the current scancode filter value or mask | |
1059 | * @device: the device descriptor | |
1060 | * @attr: the device attribute struct | |
1061 | * @buf: a pointer to the output buffer | |
1062 | * | |
1063 | * This routine is a callback routine to read a scancode filter value or mask. | |
1064 | * It is trigged by reading /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1065 | * It prints the current scancode filter value or mask of the appropriate filter | |
1066 | * type in hexadecimal into @buf and returns the size of the buffer. | |
1067 | * | |
1068 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1069 | * compared against input scancodes and non-matching scancodes are discarded. | |
1070 | * | |
1071 | * dev->lock is taken to guard against races between device registration, | |
1072 | * store_filter and show_filter. | |
1073 | */ | |
1074 | static ssize_t show_filter(struct device *device, | |
1075 | struct device_attribute *attr, | |
1076 | char *buf) | |
1077 | { | |
1078 | struct rc_dev *dev = to_rc_dev(device); | |
1079 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1080 | struct rc_scancode_filter *filter; |
00942d1a JH |
1081 | u32 val; |
1082 | ||
1083 | /* Device is being removed */ | |
1084 | if (!dev) | |
1085 | return -EINVAL; | |
1086 | ||
da6e162d | 1087 | if (fattr->type == RC_FILTER_NORMAL) |
c5540fbb | 1088 | filter = &dev->scancode_filter; |
da6e162d | 1089 | else |
c5540fbb | 1090 | filter = &dev->scancode_wakeup_filter; |
da6e162d | 1091 | |
00942d1a | 1092 | mutex_lock(&dev->lock); |
da6e162d DH |
1093 | if (fattr->mask) |
1094 | val = filter->mask; | |
00942d1a | 1095 | else |
da6e162d | 1096 | val = filter->data; |
00942d1a JH |
1097 | mutex_unlock(&dev->lock); |
1098 | ||
1099 | return sprintf(buf, "%#x\n", val); | |
1100 | } | |
1101 | ||
1102 | /** | |
1103 | * store_filter() - changes the scancode filter value | |
1104 | * @device: the device descriptor | |
1105 | * @attr: the device attribute struct | |
1106 | * @buf: a pointer to the input buffer | |
1107 | * @len: length of the input buffer | |
1108 | * | |
1109 | * This routine is for changing a scancode filter value or mask. | |
1110 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1111 | * Returns -EINVAL if an invalid filter value for the current protocol was | |
1112 | * specified or if scancode filtering is not supported by the driver, otherwise | |
1113 | * returns @len. | |
1114 | * | |
1115 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1116 | * compared against input scancodes and non-matching scancodes are discarded. | |
1117 | * | |
1118 | * dev->lock is taken to guard against races between device registration, | |
1119 | * store_filter and show_filter. | |
1120 | */ | |
1121 | static ssize_t store_filter(struct device *device, | |
1122 | struct device_attribute *attr, | |
da6e162d | 1123 | const char *buf, size_t len) |
00942d1a JH |
1124 | { |
1125 | struct rc_dev *dev = to_rc_dev(device); | |
1126 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1127 | struct rc_scancode_filter new_filter, *filter; |
00942d1a JH |
1128 | int ret; |
1129 | unsigned long val; | |
23c843b5 | 1130 | int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter); |
da6e162d | 1131 | u64 *enabled_protocols; |
00942d1a JH |
1132 | |
1133 | /* Device is being removed */ | |
1134 | if (!dev) | |
1135 | return -EINVAL; | |
1136 | ||
1137 | ret = kstrtoul(buf, 0, &val); | |
1138 | if (ret < 0) | |
1139 | return ret; | |
1140 | ||
da6e162d DH |
1141 | if (fattr->type == RC_FILTER_NORMAL) { |
1142 | set_filter = dev->s_filter; | |
c5540fbb DH |
1143 | enabled_protocols = &dev->enabled_protocols; |
1144 | filter = &dev->scancode_filter; | |
da6e162d DH |
1145 | } else { |
1146 | set_filter = dev->s_wakeup_filter; | |
c5540fbb DH |
1147 | enabled_protocols = &dev->enabled_wakeup_protocols; |
1148 | filter = &dev->scancode_wakeup_filter; | |
da6e162d DH |
1149 | } |
1150 | ||
99b0f3c9 DH |
1151 | if (!set_filter) |
1152 | return -EINVAL; | |
00942d1a JH |
1153 | |
1154 | mutex_lock(&dev->lock); | |
1155 | ||
da6e162d | 1156 | new_filter = *filter; |
00942d1a | 1157 | if (fattr->mask) |
da6e162d | 1158 | new_filter.mask = val; |
00942d1a | 1159 | else |
da6e162d | 1160 | new_filter.data = val; |
23c843b5 | 1161 | |
da6e162d | 1162 | if (!*enabled_protocols && val) { |
6bea25af JH |
1163 | /* refuse to set a filter unless a protocol is enabled */ |
1164 | ret = -EINVAL; | |
1165 | goto unlock; | |
1166 | } | |
23c843b5 | 1167 | |
da6e162d | 1168 | ret = set_filter(dev, &new_filter); |
99b0f3c9 DH |
1169 | if (ret < 0) |
1170 | goto unlock; | |
00942d1a | 1171 | |
da6e162d | 1172 | *filter = new_filter; |
00942d1a JH |
1173 | |
1174 | unlock: | |
1175 | mutex_unlock(&dev->lock); | |
da6e162d | 1176 | return (ret < 0) ? ret : len; |
00942d1a JH |
1177 | } |
1178 | ||
d8b4b582 DH |
1179 | static void rc_dev_release(struct device *device) |
1180 | { | |
d8b4b582 DH |
1181 | } |
1182 | ||
bc2a6c57 MCC |
1183 | #define ADD_HOTPLUG_VAR(fmt, val...) \ |
1184 | do { \ | |
1185 | int err = add_uevent_var(env, fmt, val); \ | |
1186 | if (err) \ | |
1187 | return err; \ | |
1188 | } while (0) | |
1189 | ||
1190 | static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env) | |
1191 | { | |
d8b4b582 | 1192 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 | 1193 | |
b05681b9 MCC |
1194 | if (!dev || !dev->input_dev) |
1195 | return -ENODEV; | |
1196 | ||
b088ba65 MCC |
1197 | if (dev->rc_map.name) |
1198 | ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name); | |
d8b4b582 DH |
1199 | if (dev->driver_name) |
1200 | ADD_HOTPLUG_VAR("DRV_NAME=%s", dev->driver_name); | |
bc2a6c57 MCC |
1201 | |
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | /* | |
1206 | * Static device attribute struct with the sysfs attributes for IR's | |
1207 | */ | |
ab88c66d JH |
1208 | static RC_PROTO_ATTR(protocols, S_IRUGO | S_IWUSR, |
1209 | show_protocols, store_protocols, RC_FILTER_NORMAL); | |
1210 | static RC_PROTO_ATTR(wakeup_protocols, S_IRUGO | S_IWUSR, | |
1211 | show_protocols, store_protocols, RC_FILTER_WAKEUP); | |
00942d1a JH |
1212 | static RC_FILTER_ATTR(filter, S_IRUGO|S_IWUSR, |
1213 | show_filter, store_filter, RC_FILTER_NORMAL, false); | |
1214 | static RC_FILTER_ATTR(filter_mask, S_IRUGO|S_IWUSR, | |
1215 | show_filter, store_filter, RC_FILTER_NORMAL, true); | |
1216 | static RC_FILTER_ATTR(wakeup_filter, S_IRUGO|S_IWUSR, | |
1217 | show_filter, store_filter, RC_FILTER_WAKEUP, false); | |
1218 | static RC_FILTER_ATTR(wakeup_filter_mask, S_IRUGO|S_IWUSR, | |
1219 | show_filter, store_filter, RC_FILTER_WAKEUP, true); | |
bc2a6c57 | 1220 | |
99b0f3c9 | 1221 | static struct attribute *rc_dev_protocol_attrs[] = { |
ab88c66d | 1222 | &dev_attr_protocols.attr.attr, |
99b0f3c9 DH |
1223 | NULL, |
1224 | }; | |
1225 | ||
1226 | static struct attribute_group rc_dev_protocol_attr_grp = { | |
1227 | .attrs = rc_dev_protocol_attrs, | |
1228 | }; | |
1229 | ||
1230 | static struct attribute *rc_dev_wakeup_protocol_attrs[] = { | |
ab88c66d | 1231 | &dev_attr_wakeup_protocols.attr.attr, |
99b0f3c9 DH |
1232 | NULL, |
1233 | }; | |
1234 | ||
1235 | static struct attribute_group rc_dev_wakeup_protocol_attr_grp = { | |
1236 | .attrs = rc_dev_wakeup_protocol_attrs, | |
1237 | }; | |
1238 | ||
1239 | static struct attribute *rc_dev_filter_attrs[] = { | |
00942d1a JH |
1240 | &dev_attr_filter.attr.attr, |
1241 | &dev_attr_filter_mask.attr.attr, | |
bc2a6c57 MCC |
1242 | NULL, |
1243 | }; | |
1244 | ||
99b0f3c9 DH |
1245 | static struct attribute_group rc_dev_filter_attr_grp = { |
1246 | .attrs = rc_dev_filter_attrs, | |
bc2a6c57 MCC |
1247 | }; |
1248 | ||
99b0f3c9 DH |
1249 | static struct attribute *rc_dev_wakeup_filter_attrs[] = { |
1250 | &dev_attr_wakeup_filter.attr.attr, | |
1251 | &dev_attr_wakeup_filter_mask.attr.attr, | |
1252 | NULL, | |
1253 | }; | |
1254 | ||
1255 | static struct attribute_group rc_dev_wakeup_filter_attr_grp = { | |
1256 | .attrs = rc_dev_wakeup_filter_attrs, | |
bc2a6c57 MCC |
1257 | }; |
1258 | ||
1259 | static struct device_type rc_dev_type = { | |
d8b4b582 | 1260 | .release = rc_dev_release, |
bc2a6c57 MCC |
1261 | .uevent = rc_dev_uevent, |
1262 | }; | |
1263 | ||
d8b4b582 | 1264 | struct rc_dev *rc_allocate_device(void) |
bc2a6c57 | 1265 | { |
d8b4b582 | 1266 | struct rc_dev *dev; |
bc2a6c57 | 1267 | |
d8b4b582 DH |
1268 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
1269 | if (!dev) | |
1270 | return NULL; | |
1271 | ||
1272 | dev->input_dev = input_allocate_device(); | |
1273 | if (!dev->input_dev) { | |
1274 | kfree(dev); | |
1275 | return NULL; | |
1276 | } | |
1277 | ||
aebd636b DT |
1278 | dev->input_dev->getkeycode = ir_getkeycode; |
1279 | dev->input_dev->setkeycode = ir_setkeycode; | |
d8b4b582 DH |
1280 | input_set_drvdata(dev->input_dev, dev); |
1281 | ||
b088ba65 | 1282 | spin_lock_init(&dev->rc_map.lock); |
d8b4b582 | 1283 | spin_lock_init(&dev->keylock); |
08aeb7c9 | 1284 | mutex_init(&dev->lock); |
d8b4b582 | 1285 | setup_timer(&dev->timer_keyup, ir_timer_keyup, (unsigned long)dev); |
bc2a6c57 | 1286 | |
d8b4b582 | 1287 | dev->dev.type = &rc_dev_type; |
40fc5325 | 1288 | dev->dev.class = &rc_class; |
d8b4b582 DH |
1289 | device_initialize(&dev->dev); |
1290 | ||
1291 | __module_get(THIS_MODULE); | |
1292 | return dev; | |
1293 | } | |
1294 | EXPORT_SYMBOL_GPL(rc_allocate_device); | |
1295 | ||
1296 | void rc_free_device(struct rc_dev *dev) | |
bc2a6c57 | 1297 | { |
b05681b9 MCC |
1298 | if (!dev) |
1299 | return; | |
1300 | ||
1301 | if (dev->input_dev) | |
d8b4b582 | 1302 | input_free_device(dev->input_dev); |
b05681b9 MCC |
1303 | |
1304 | put_device(&dev->dev); | |
1305 | ||
1306 | kfree(dev); | |
1307 | module_put(THIS_MODULE); | |
d8b4b582 DH |
1308 | } |
1309 | EXPORT_SYMBOL_GPL(rc_free_device); | |
1310 | ||
1311 | int rc_register_device(struct rc_dev *dev) | |
1312 | { | |
5da6e984 | 1313 | static bool raw_init = false; /* raw decoders loaded? */ |
b088ba65 | 1314 | struct rc_map *rc_map; |
bc2a6c57 | 1315 | const char *path; |
99b0f3c9 | 1316 | int rc, devno, attr = 0; |
bc2a6c57 | 1317 | |
d8b4b582 DH |
1318 | if (!dev || !dev->map_name) |
1319 | return -EINVAL; | |
bc2a6c57 | 1320 | |
d100e659 | 1321 | rc_map = rc_map_get(dev->map_name); |
b088ba65 | 1322 | if (!rc_map) |
d100e659 | 1323 | rc_map = rc_map_get(RC_MAP_EMPTY); |
b088ba65 | 1324 | if (!rc_map || !rc_map->scan || rc_map->size == 0) |
d8b4b582 DH |
1325 | return -EINVAL; |
1326 | ||
1327 | set_bit(EV_KEY, dev->input_dev->evbit); | |
1328 | set_bit(EV_REP, dev->input_dev->evbit); | |
1329 | set_bit(EV_MSC, dev->input_dev->evbit); | |
1330 | set_bit(MSC_SCAN, dev->input_dev->mscbit); | |
1331 | if (dev->open) | |
1332 | dev->input_dev->open = ir_open; | |
1333 | if (dev->close) | |
1334 | dev->input_dev->close = ir_close; | |
1335 | ||
587d1b06 MCC |
1336 | do { |
1337 | devno = find_first_zero_bit(ir_core_dev_number, | |
1338 | IRRCV_NUM_DEVICES); | |
1339 | /* No free device slots */ | |
1340 | if (devno >= IRRCV_NUM_DEVICES) | |
1341 | return -ENOMEM; | |
1342 | } while (test_and_set_bit(devno, ir_core_dev_number)); | |
1343 | ||
99b0f3c9 DH |
1344 | dev->dev.groups = dev->sysfs_groups; |
1345 | dev->sysfs_groups[attr++] = &rc_dev_protocol_attr_grp; | |
1346 | if (dev->s_filter) | |
120703f9 | 1347 | dev->sysfs_groups[attr++] = &rc_dev_filter_attr_grp; |
99b0f3c9 DH |
1348 | if (dev->s_wakeup_filter) |
1349 | dev->sysfs_groups[attr++] = &rc_dev_wakeup_filter_attr_grp; | |
1350 | if (dev->change_wakeup_protocol) | |
1351 | dev->sysfs_groups[attr++] = &rc_dev_wakeup_protocol_attr_grp; | |
1352 | dev->sysfs_groups[attr++] = NULL; | |
1353 | ||
26291233 JH |
1354 | /* |
1355 | * Take the lock here, as the device sysfs node will appear | |
1356 | * when device_add() is called, which may trigger an ir-keytable udev | |
1357 | * rule, which will in turn call show_protocols and access | |
1358 | * dev->enabled_protocols before it has been initialized. | |
1359 | */ | |
1360 | mutex_lock(&dev->lock); | |
1361 | ||
587d1b06 | 1362 | dev->devno = devno; |
d8b4b582 DH |
1363 | dev_set_name(&dev->dev, "rc%ld", dev->devno); |
1364 | dev_set_drvdata(&dev->dev, dev); | |
1365 | rc = device_add(&dev->dev); | |
1366 | if (rc) | |
08aeb7c9 | 1367 | goto out_unlock; |
bc2a6c57 | 1368 | |
b088ba65 | 1369 | rc = ir_setkeytable(dev, rc_map); |
d8b4b582 DH |
1370 | if (rc) |
1371 | goto out_dev; | |
1372 | ||
1373 | dev->input_dev->dev.parent = &dev->dev; | |
1374 | memcpy(&dev->input_dev->id, &dev->input_id, sizeof(dev->input_id)); | |
1375 | dev->input_dev->phys = dev->input_phys; | |
1376 | dev->input_dev->name = dev->input_name; | |
8b2ff320 SK |
1377 | |
1378 | /* input_register_device can call ir_open, so unlock mutex here */ | |
1379 | mutex_unlock(&dev->lock); | |
1380 | ||
d8b4b582 | 1381 | rc = input_register_device(dev->input_dev); |
8b2ff320 SK |
1382 | |
1383 | mutex_lock(&dev->lock); | |
1384 | ||
d8b4b582 DH |
1385 | if (rc) |
1386 | goto out_table; | |
bc2a6c57 | 1387 | |
d8b4b582 | 1388 | /* |
25985edc | 1389 | * Default delay of 250ms is too short for some protocols, especially |
d8b4b582 DH |
1390 | * since the timeout is currently set to 250ms. Increase it to 500ms, |
1391 | * to avoid wrong repetition of the keycodes. Note that this must be | |
1392 | * set after the call to input_register_device(). | |
1393 | */ | |
1394 | dev->input_dev->rep[REP_DELAY] = 500; | |
1395 | ||
ca540c8b MCC |
1396 | /* |
1397 | * As a repeat event on protocols like RC-5 and NEC take as long as | |
1398 | * 110/114ms, using 33ms as a repeat period is not the right thing | |
1399 | * to do. | |
1400 | */ | |
1401 | dev->input_dev->rep[REP_PERIOD] = 125; | |
1402 | ||
d8b4b582 | 1403 | path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL); |
bc2a6c57 | 1404 | printk(KERN_INFO "%s: %s as %s\n", |
d8b4b582 DH |
1405 | dev_name(&dev->dev), |
1406 | dev->input_name ? dev->input_name : "Unspecified device", | |
bc2a6c57 MCC |
1407 | path ? path : "N/A"); |
1408 | kfree(path); | |
1409 | ||
d8b4b582 | 1410 | if (dev->driver_type == RC_DRIVER_IR_RAW) { |
5da6e984 EG |
1411 | /* Load raw decoders, if they aren't already */ |
1412 | if (!raw_init) { | |
1413 | IR_dprintk(1, "Loading raw decoders\n"); | |
1414 | ir_raw_init(); | |
1415 | raw_init = true; | |
1416 | } | |
d8b4b582 DH |
1417 | rc = ir_raw_event_register(dev); |
1418 | if (rc < 0) | |
1419 | goto out_input; | |
1420 | } | |
1421 | ||
1422 | if (dev->change_protocol) { | |
c003ab1b DH |
1423 | u64 rc_type = (1 << rc_map->rc_type); |
1424 | rc = dev->change_protocol(dev, &rc_type); | |
d8b4b582 DH |
1425 | if (rc < 0) |
1426 | goto out_raw; | |
c5540fbb | 1427 | dev->enabled_protocols = rc_type; |
d8b4b582 DH |
1428 | } |
1429 | ||
0528f354 DC |
1430 | mutex_unlock(&dev->lock); |
1431 | ||
d8b4b582 DH |
1432 | IR_dprintk(1, "Registered rc%ld (driver: %s, remote: %s, mode %s)\n", |
1433 | dev->devno, | |
1434 | dev->driver_name ? dev->driver_name : "unknown", | |
b088ba65 | 1435 | rc_map->name ? rc_map->name : "unknown", |
d8b4b582 DH |
1436 | dev->driver_type == RC_DRIVER_IR_RAW ? "raw" : "cooked"); |
1437 | ||
bc2a6c57 | 1438 | return 0; |
d8b4b582 DH |
1439 | |
1440 | out_raw: | |
1441 | if (dev->driver_type == RC_DRIVER_IR_RAW) | |
1442 | ir_raw_event_unregister(dev); | |
1443 | out_input: | |
1444 | input_unregister_device(dev->input_dev); | |
1445 | dev->input_dev = NULL; | |
1446 | out_table: | |
b088ba65 | 1447 | ir_free_table(&dev->rc_map); |
d8b4b582 DH |
1448 | out_dev: |
1449 | device_del(&dev->dev); | |
08aeb7c9 JW |
1450 | out_unlock: |
1451 | mutex_unlock(&dev->lock); | |
587d1b06 | 1452 | clear_bit(dev->devno, ir_core_dev_number); |
d8b4b582 | 1453 | return rc; |
bc2a6c57 | 1454 | } |
d8b4b582 | 1455 | EXPORT_SYMBOL_GPL(rc_register_device); |
bc2a6c57 | 1456 | |
d8b4b582 | 1457 | void rc_unregister_device(struct rc_dev *dev) |
bc2a6c57 | 1458 | { |
d8b4b582 DH |
1459 | if (!dev) |
1460 | return; | |
bc2a6c57 | 1461 | |
d8b4b582 | 1462 | del_timer_sync(&dev->timer_keyup); |
bc2a6c57 | 1463 | |
587d1b06 MCC |
1464 | clear_bit(dev->devno, ir_core_dev_number); |
1465 | ||
d8b4b582 DH |
1466 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1467 | ir_raw_event_unregister(dev); | |
1468 | ||
b05681b9 MCC |
1469 | /* Freeing the table should also call the stop callback */ |
1470 | ir_free_table(&dev->rc_map); | |
1471 | IR_dprintk(1, "Freed keycode table\n"); | |
1472 | ||
d8b4b582 DH |
1473 | input_unregister_device(dev->input_dev); |
1474 | dev->input_dev = NULL; | |
1475 | ||
b05681b9 | 1476 | device_del(&dev->dev); |
d8b4b582 | 1477 | |
b05681b9 | 1478 | rc_free_device(dev); |
bc2a6c57 | 1479 | } |
b05681b9 | 1480 | |
d8b4b582 | 1481 | EXPORT_SYMBOL_GPL(rc_unregister_device); |
bc2a6c57 MCC |
1482 | |
1483 | /* | |
1484 | * Init/exit code for the module. Basically, creates/removes /sys/class/rc | |
1485 | */ | |
1486 | ||
6bda9644 | 1487 | static int __init rc_core_init(void) |
bc2a6c57 | 1488 | { |
40fc5325 | 1489 | int rc = class_register(&rc_class); |
bc2a6c57 | 1490 | if (rc) { |
6bda9644 | 1491 | printk(KERN_ERR "rc_core: unable to register rc class\n"); |
bc2a6c57 MCC |
1492 | return rc; |
1493 | } | |
1494 | ||
153a60bb | 1495 | led_trigger_register_simple("rc-feedback", &led_feedback); |
d100e659 | 1496 | rc_map_register(&empty_map); |
bc2a6c57 MCC |
1497 | |
1498 | return 0; | |
1499 | } | |
1500 | ||
6bda9644 | 1501 | static void __exit rc_core_exit(void) |
bc2a6c57 | 1502 | { |
40fc5325 | 1503 | class_unregister(&rc_class); |
153a60bb | 1504 | led_trigger_unregister_simple(led_feedback); |
d100e659 | 1505 | rc_map_unregister(&empty_map); |
bc2a6c57 MCC |
1506 | } |
1507 | ||
e76d4ce4 | 1508 | subsys_initcall(rc_core_init); |
6bda9644 | 1509 | module_exit(rc_core_exit); |
bc2a6c57 | 1510 | |
6bda9644 MCC |
1511 | int rc_core_debug; /* ir_debug level (0,1,2) */ |
1512 | EXPORT_SYMBOL_GPL(rc_core_debug); | |
1513 | module_param_named(debug, rc_core_debug, int, 0644); | |
446e4a64 | 1514 | |
37e59f87 | 1515 | MODULE_AUTHOR("Mauro Carvalho Chehab"); |
446e4a64 | 1516 | MODULE_LICENSE("GPL"); |