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> |
fcb13097 | 21 | #include <linux/idr.h> |
bc2a6c57 | 22 | #include <linux/device.h> |
7a707b89 | 23 | #include <linux/module.h> |
f62de675 | 24 | #include "rc-core-priv.h" |
ef53a115 | 25 | |
b3074c0a DH |
26 | /* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */ |
27 | #define IR_TAB_MIN_SIZE 256 | |
28 | #define IR_TAB_MAX_SIZE 8192 | |
fcb13097 | 29 | #define RC_DEV_MAX 256 |
f6fc5049 | 30 | |
a374fef4 DH |
31 | /* FIXME: IR_KEYPRESS_TIMEOUT should be protocol specific */ |
32 | #define IR_KEYPRESS_TIMEOUT 250 | |
33 | ||
4c7b355d | 34 | /* Used to keep track of known keymaps */ |
631493ec MCC |
35 | static LIST_HEAD(rc_map_list); |
36 | static DEFINE_SPINLOCK(rc_map_lock); | |
153a60bb | 37 | static struct led_trigger *led_feedback; |
631493ec | 38 | |
fcb13097 DH |
39 | /* Used to keep track of rc devices */ |
40 | static DEFINE_IDA(rc_ida); | |
41 | ||
d100e659 | 42 | static struct rc_map_list *seek_rc_map(const char *name) |
631493ec | 43 | { |
d100e659 | 44 | struct rc_map_list *map = NULL; |
631493ec MCC |
45 | |
46 | spin_lock(&rc_map_lock); | |
47 | list_for_each_entry(map, &rc_map_list, list) { | |
48 | if (!strcmp(name, map->map.name)) { | |
49 | spin_unlock(&rc_map_lock); | |
50 | return map; | |
51 | } | |
52 | } | |
53 | spin_unlock(&rc_map_lock); | |
54 | ||
55 | return NULL; | |
56 | } | |
57 | ||
d100e659 | 58 | struct rc_map *rc_map_get(const char *name) |
631493ec MCC |
59 | { |
60 | ||
d100e659 | 61 | struct rc_map_list *map; |
631493ec MCC |
62 | |
63 | map = seek_rc_map(name); | |
2ff56fad | 64 | #ifdef CONFIG_MODULES |
631493ec | 65 | if (!map) { |
8ea5488a | 66 | int rc = request_module("%s", name); |
631493ec MCC |
67 | if (rc < 0) { |
68 | printk(KERN_ERR "Couldn't load IR keymap %s\n", name); | |
69 | return NULL; | |
70 | } | |
71 | msleep(20); /* Give some time for IR to register */ | |
72 | ||
73 | map = seek_rc_map(name); | |
74 | } | |
75 | #endif | |
76 | if (!map) { | |
77 | printk(KERN_ERR "IR keymap %s not found\n", name); | |
78 | return NULL; | |
79 | } | |
80 | ||
81 | printk(KERN_INFO "Registered IR keymap %s\n", map->map.name); | |
82 | ||
83 | return &map->map; | |
84 | } | |
d100e659 | 85 | EXPORT_SYMBOL_GPL(rc_map_get); |
631493ec | 86 | |
d100e659 | 87 | int rc_map_register(struct rc_map_list *map) |
631493ec MCC |
88 | { |
89 | spin_lock(&rc_map_lock); | |
90 | list_add_tail(&map->list, &rc_map_list); | |
91 | spin_unlock(&rc_map_lock); | |
92 | return 0; | |
93 | } | |
d100e659 | 94 | EXPORT_SYMBOL_GPL(rc_map_register); |
631493ec | 95 | |
d100e659 | 96 | void rc_map_unregister(struct rc_map_list *map) |
631493ec MCC |
97 | { |
98 | spin_lock(&rc_map_lock); | |
99 | list_del(&map->list); | |
100 | spin_unlock(&rc_map_lock); | |
101 | } | |
d100e659 | 102 | EXPORT_SYMBOL_GPL(rc_map_unregister); |
631493ec MCC |
103 | |
104 | ||
2f4f58d6 | 105 | static struct rc_map_table empty[] = { |
631493ec MCC |
106 | { 0x2a, KEY_COFFEE }, |
107 | }; | |
108 | ||
d100e659 | 109 | static struct rc_map_list empty_map = { |
631493ec MCC |
110 | .map = { |
111 | .scan = empty, | |
112 | .size = ARRAY_SIZE(empty), | |
52b66144 | 113 | .rc_type = RC_TYPE_UNKNOWN, /* Legacy IR type */ |
631493ec MCC |
114 | .name = RC_MAP_EMPTY, |
115 | } | |
116 | }; | |
117 | ||
9f470095 DT |
118 | /** |
119 | * ir_create_table() - initializes a scancode table | |
b088ba65 | 120 | * @rc_map: the rc_map to initialize |
9f470095 | 121 | * @name: name to assign to the table |
52b66144 | 122 | * @rc_type: ir type to assign to the new table |
9f470095 DT |
123 | * @size: initial size of the table |
124 | * @return: zero on success or a negative error code | |
125 | * | |
b088ba65 | 126 | * This routine will initialize the rc_map and will allocate |
d8b4b582 | 127 | * memory to hold at least the specified number of elements. |
9f470095 | 128 | */ |
b088ba65 | 129 | static int ir_create_table(struct rc_map *rc_map, |
52b66144 | 130 | const char *name, u64 rc_type, size_t size) |
9f470095 | 131 | { |
b088ba65 MCC |
132 | rc_map->name = name; |
133 | rc_map->rc_type = rc_type; | |
2f4f58d6 MCC |
134 | rc_map->alloc = roundup_pow_of_two(size * sizeof(struct rc_map_table)); |
135 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); | |
b088ba65 MCC |
136 | rc_map->scan = kmalloc(rc_map->alloc, GFP_KERNEL); |
137 | if (!rc_map->scan) | |
9f470095 DT |
138 | return -ENOMEM; |
139 | ||
140 | IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", | |
b088ba65 | 141 | rc_map->size, rc_map->alloc); |
9f470095 DT |
142 | return 0; |
143 | } | |
144 | ||
145 | /** | |
146 | * ir_free_table() - frees memory allocated by a scancode table | |
b088ba65 | 147 | * @rc_map: the table whose mappings need to be freed |
9f470095 DT |
148 | * |
149 | * This routine will free memory alloctaed for key mappings used by given | |
150 | * scancode table. | |
151 | */ | |
b088ba65 | 152 | static void ir_free_table(struct rc_map *rc_map) |
9f470095 | 153 | { |
b088ba65 MCC |
154 | rc_map->size = 0; |
155 | kfree(rc_map->scan); | |
156 | rc_map->scan = NULL; | |
9f470095 DT |
157 | } |
158 | ||
7fee03e4 | 159 | /** |
b3074c0a | 160 | * ir_resize_table() - resizes a scancode table if necessary |
b088ba65 | 161 | * @rc_map: the rc_map to resize |
9f470095 | 162 | * @gfp_flags: gfp flags to use when allocating memory |
b3074c0a | 163 | * @return: zero on success or a negative error code |
7fee03e4 | 164 | * |
b088ba65 | 165 | * This routine will shrink the rc_map if it has lots of |
b3074c0a | 166 | * unused entries and grow it if it is full. |
7fee03e4 | 167 | */ |
b088ba65 | 168 | static int ir_resize_table(struct rc_map *rc_map, gfp_t gfp_flags) |
7fee03e4 | 169 | { |
b088ba65 | 170 | unsigned int oldalloc = rc_map->alloc; |
b3074c0a | 171 | unsigned int newalloc = oldalloc; |
2f4f58d6 MCC |
172 | struct rc_map_table *oldscan = rc_map->scan; |
173 | struct rc_map_table *newscan; | |
b3074c0a | 174 | |
b088ba65 | 175 | if (rc_map->size == rc_map->len) { |
b3074c0a | 176 | /* All entries in use -> grow keytable */ |
b088ba65 | 177 | if (rc_map->alloc >= IR_TAB_MAX_SIZE) |
b3074c0a | 178 | return -ENOMEM; |
7fee03e4 | 179 | |
b3074c0a DH |
180 | newalloc *= 2; |
181 | IR_dprintk(1, "Growing table to %u bytes\n", newalloc); | |
182 | } | |
7fee03e4 | 183 | |
b088ba65 | 184 | if ((rc_map->len * 3 < rc_map->size) && (oldalloc > IR_TAB_MIN_SIZE)) { |
b3074c0a DH |
185 | /* Less than 1/3 of entries in use -> shrink keytable */ |
186 | newalloc /= 2; | |
187 | IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc); | |
188 | } | |
7fee03e4 | 189 | |
b3074c0a DH |
190 | if (newalloc == oldalloc) |
191 | return 0; | |
7fee03e4 | 192 | |
9f470095 | 193 | newscan = kmalloc(newalloc, gfp_flags); |
b3074c0a DH |
194 | if (!newscan) { |
195 | IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc); | |
196 | return -ENOMEM; | |
197 | } | |
7fee03e4 | 198 | |
2f4f58d6 | 199 | memcpy(newscan, rc_map->scan, rc_map->len * sizeof(struct rc_map_table)); |
b088ba65 MCC |
200 | rc_map->scan = newscan; |
201 | rc_map->alloc = newalloc; | |
2f4f58d6 | 202 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); |
b3074c0a DH |
203 | kfree(oldscan); |
204 | return 0; | |
7fee03e4 MCC |
205 | } |
206 | ||
f6fc5049 | 207 | /** |
9f470095 | 208 | * ir_update_mapping() - set a keycode in the scancode->keycode table |
d8b4b582 | 209 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 210 | * @rc_map: scancode table to be adjusted |
9f470095 DT |
211 | * @index: index of the mapping that needs to be updated |
212 | * @keycode: the desired keycode | |
213 | * @return: previous keycode assigned to the mapping | |
214 | * | |
d8b4b582 | 215 | * This routine is used to update scancode->keycode mapping at given |
9f470095 DT |
216 | * position. |
217 | */ | |
d8b4b582 | 218 | static unsigned int ir_update_mapping(struct rc_dev *dev, |
b088ba65 | 219 | struct rc_map *rc_map, |
9f470095 DT |
220 | unsigned int index, |
221 | unsigned int new_keycode) | |
222 | { | |
b088ba65 | 223 | int old_keycode = rc_map->scan[index].keycode; |
9f470095 DT |
224 | int i; |
225 | ||
226 | /* Did the user wish to remove the mapping? */ | |
227 | if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) { | |
228 | IR_dprintk(1, "#%d: Deleting scan 0x%04x\n", | |
b088ba65 MCC |
229 | index, rc_map->scan[index].scancode); |
230 | rc_map->len--; | |
231 | memmove(&rc_map->scan[index], &rc_map->scan[index+ 1], | |
2f4f58d6 | 232 | (rc_map->len - index) * sizeof(struct rc_map_table)); |
9f470095 DT |
233 | } else { |
234 | IR_dprintk(1, "#%d: %s scan 0x%04x with key 0x%04x\n", | |
235 | index, | |
236 | old_keycode == KEY_RESERVED ? "New" : "Replacing", | |
b088ba65 MCC |
237 | rc_map->scan[index].scancode, new_keycode); |
238 | rc_map->scan[index].keycode = new_keycode; | |
d8b4b582 | 239 | __set_bit(new_keycode, dev->input_dev->keybit); |
9f470095 DT |
240 | } |
241 | ||
242 | if (old_keycode != KEY_RESERVED) { | |
243 | /* A previous mapping was updated... */ | |
d8b4b582 | 244 | __clear_bit(old_keycode, dev->input_dev->keybit); |
9f470095 | 245 | /* ... but another scancode might use the same keycode */ |
b088ba65 MCC |
246 | for (i = 0; i < rc_map->len; i++) { |
247 | if (rc_map->scan[i].keycode == old_keycode) { | |
d8b4b582 | 248 | __set_bit(old_keycode, dev->input_dev->keybit); |
9f470095 DT |
249 | break; |
250 | } | |
251 | } | |
252 | ||
253 | /* Possibly shrink the keytable, failure is not a problem */ | |
b088ba65 | 254 | ir_resize_table(rc_map, GFP_ATOMIC); |
9f470095 DT |
255 | } |
256 | ||
257 | return old_keycode; | |
258 | } | |
259 | ||
260 | /** | |
4c7b355d | 261 | * ir_establish_scancode() - set a keycode in the scancode->keycode table |
d8b4b582 | 262 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 263 | * @rc_map: scancode table to be searched |
9f470095 DT |
264 | * @scancode: the desired scancode |
265 | * @resize: controls whether we allowed to resize the table to | |
25985edc | 266 | * accommodate not yet present scancodes |
9f470095 DT |
267 | * @return: index of the mapping containing scancode in question |
268 | * or -1U in case of failure. | |
f6fc5049 | 269 | * |
b088ba65 | 270 | * This routine is used to locate given scancode in rc_map. |
9f470095 DT |
271 | * If scancode is not yet present the routine will allocate a new slot |
272 | * for it. | |
f6fc5049 | 273 | */ |
d8b4b582 | 274 | static unsigned int ir_establish_scancode(struct rc_dev *dev, |
b088ba65 | 275 | struct rc_map *rc_map, |
9f470095 DT |
276 | unsigned int scancode, |
277 | bool resize) | |
f6fc5049 | 278 | { |
b3074c0a | 279 | unsigned int i; |
9dfe4e83 MCC |
280 | |
281 | /* | |
282 | * Unfortunately, some hardware-based IR decoders don't provide | |
283 | * all bits for the complete IR code. In general, they provide only | |
284 | * the command part of the IR code. Yet, as it is possible to replace | |
285 | * the provided IR with another one, it is needed to allow loading | |
d8b4b582 DH |
286 | * IR tables from other remotes. So, we support specifying a mask to |
287 | * indicate the valid bits of the scancodes. | |
9dfe4e83 | 288 | */ |
9d2f1d3c DH |
289 | if (dev->scancode_mask) |
290 | scancode &= dev->scancode_mask; | |
b3074c0a DH |
291 | |
292 | /* First check if we already have a mapping for this ir command */ | |
b088ba65 MCC |
293 | for (i = 0; i < rc_map->len; i++) { |
294 | if (rc_map->scan[i].scancode == scancode) | |
9f470095 DT |
295 | return i; |
296 | ||
b3074c0a | 297 | /* Keytable is sorted from lowest to highest scancode */ |
b088ba65 | 298 | if (rc_map->scan[i].scancode >= scancode) |
b3074c0a | 299 | break; |
b3074c0a | 300 | } |
f6fc5049 | 301 | |
9f470095 | 302 | /* No previous mapping found, we might need to grow the table */ |
b088ba65 MCC |
303 | if (rc_map->size == rc_map->len) { |
304 | if (!resize || ir_resize_table(rc_map, GFP_ATOMIC)) | |
9f470095 DT |
305 | return -1U; |
306 | } | |
35438946 | 307 | |
9f470095 | 308 | /* i is the proper index to insert our new keycode */ |
b088ba65 MCC |
309 | if (i < rc_map->len) |
310 | memmove(&rc_map->scan[i + 1], &rc_map->scan[i], | |
2f4f58d6 | 311 | (rc_map->len - i) * sizeof(struct rc_map_table)); |
b088ba65 MCC |
312 | rc_map->scan[i].scancode = scancode; |
313 | rc_map->scan[i].keycode = KEY_RESERVED; | |
314 | rc_map->len++; | |
f6fc5049 | 315 | |
9f470095 | 316 | return i; |
f6fc5049 MCC |
317 | } |
318 | ||
ef53a115 | 319 | /** |
b3074c0a | 320 | * ir_setkeycode() - set a keycode in the scancode->keycode table |
d8b4b582 | 321 | * @idev: the struct input_dev device descriptor |
ef53a115 | 322 | * @scancode: the desired scancode |
b3074c0a DH |
323 | * @keycode: result |
324 | * @return: -EINVAL if the keycode could not be inserted, otherwise zero. | |
ef53a115 | 325 | * |
b3074c0a | 326 | * This routine is used to handle evdev EVIOCSKEY ioctl. |
ef53a115 | 327 | */ |
d8b4b582 | 328 | static int ir_setkeycode(struct input_dev *idev, |
9f470095 DT |
329 | const struct input_keymap_entry *ke, |
330 | unsigned int *old_keycode) | |
ef53a115 | 331 | { |
d8b4b582 | 332 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 333 | struct rc_map *rc_map = &rdev->rc_map; |
9f470095 DT |
334 | unsigned int index; |
335 | unsigned int scancode; | |
dea8a39f | 336 | int retval = 0; |
9f470095 | 337 | unsigned long flags; |
ef53a115 | 338 | |
b088ba65 | 339 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
340 | |
341 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
342 | index = ke->index; | |
b088ba65 | 343 | if (index >= rc_map->len) { |
9f470095 DT |
344 | retval = -EINVAL; |
345 | goto out; | |
346 | } | |
347 | } else { | |
348 | retval = input_scancode_to_scalar(ke, &scancode); | |
349 | if (retval) | |
350 | goto out; | |
351 | ||
b088ba65 MCC |
352 | index = ir_establish_scancode(rdev, rc_map, scancode, true); |
353 | if (index >= rc_map->len) { | |
9f470095 DT |
354 | retval = -ENOMEM; |
355 | goto out; | |
356 | } | |
357 | } | |
358 | ||
b088ba65 | 359 | *old_keycode = ir_update_mapping(rdev, rc_map, index, ke->keycode); |
9f470095 DT |
360 | |
361 | out: | |
b088ba65 | 362 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 363 | return retval; |
e97f4677 MCC |
364 | } |
365 | ||
366 | /** | |
b3074c0a | 367 | * ir_setkeytable() - sets several entries in the scancode->keycode table |
d8b4b582 | 368 | * @dev: the struct rc_dev device descriptor |
b088ba65 MCC |
369 | * @to: the struct rc_map to copy entries to |
370 | * @from: the struct rc_map to copy entries from | |
9f470095 | 371 | * @return: -ENOMEM if all keycodes could not be inserted, otherwise zero. |
e97f4677 | 372 | * |
b3074c0a | 373 | * This routine is used to handle table initialization. |
e97f4677 | 374 | */ |
d8b4b582 | 375 | static int ir_setkeytable(struct rc_dev *dev, |
b088ba65 | 376 | const struct rc_map *from) |
e97f4677 | 377 | { |
b088ba65 | 378 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
379 | unsigned int i, index; |
380 | int rc; | |
381 | ||
b088ba65 | 382 | rc = ir_create_table(rc_map, from->name, |
52b66144 | 383 | from->rc_type, from->size); |
9f470095 DT |
384 | if (rc) |
385 | return rc; | |
386 | ||
387 | IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", | |
b088ba65 | 388 | rc_map->size, rc_map->alloc); |
e97f4677 | 389 | |
b3074c0a | 390 | for (i = 0; i < from->size; i++) { |
b088ba65 | 391 | index = ir_establish_scancode(dev, rc_map, |
9f470095 | 392 | from->scan[i].scancode, false); |
b088ba65 | 393 | if (index >= rc_map->len) { |
9f470095 | 394 | rc = -ENOMEM; |
b3074c0a | 395 | break; |
9f470095 DT |
396 | } |
397 | ||
b088ba65 | 398 | ir_update_mapping(dev, rc_map, index, |
9f470095 | 399 | from->scan[i].keycode); |
e97f4677 | 400 | } |
9f470095 DT |
401 | |
402 | if (rc) | |
b088ba65 | 403 | ir_free_table(rc_map); |
9f470095 | 404 | |
b3074c0a | 405 | return rc; |
ef53a115 MCC |
406 | } |
407 | ||
9f470095 DT |
408 | /** |
409 | * ir_lookup_by_scancode() - locate mapping by scancode | |
b088ba65 | 410 | * @rc_map: the struct rc_map to search |
9f470095 DT |
411 | * @scancode: scancode to look for in the table |
412 | * @return: index in the table, -1U if not found | |
413 | * | |
414 | * This routine performs binary search in RC keykeymap table for | |
415 | * given scancode. | |
416 | */ | |
b088ba65 | 417 | static unsigned int ir_lookup_by_scancode(const struct rc_map *rc_map, |
9f470095 DT |
418 | unsigned int scancode) |
419 | { | |
0d07025e | 420 | int start = 0; |
b088ba65 | 421 | int end = rc_map->len - 1; |
0d07025e | 422 | int mid; |
9f470095 DT |
423 | |
424 | while (start <= end) { | |
425 | mid = (start + end) / 2; | |
b088ba65 | 426 | if (rc_map->scan[mid].scancode < scancode) |
9f470095 | 427 | start = mid + 1; |
b088ba65 | 428 | else if (rc_map->scan[mid].scancode > scancode) |
9f470095 DT |
429 | end = mid - 1; |
430 | else | |
431 | return mid; | |
432 | } | |
433 | ||
434 | return -1U; | |
435 | } | |
436 | ||
ef53a115 | 437 | /** |
b3074c0a | 438 | * ir_getkeycode() - get a keycode from the scancode->keycode table |
d8b4b582 | 439 | * @idev: the struct input_dev device descriptor |
ef53a115 | 440 | * @scancode: the desired scancode |
b3074c0a DH |
441 | * @keycode: used to return the keycode, if found, or KEY_RESERVED |
442 | * @return: always returns zero. | |
ef53a115 | 443 | * |
b3074c0a | 444 | * This routine is used to handle evdev EVIOCGKEY ioctl. |
ef53a115 | 445 | */ |
d8b4b582 | 446 | static int ir_getkeycode(struct input_dev *idev, |
9f470095 | 447 | struct input_keymap_entry *ke) |
ef53a115 | 448 | { |
d8b4b582 | 449 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 450 | struct rc_map *rc_map = &rdev->rc_map; |
2f4f58d6 | 451 | struct rc_map_table *entry; |
9f470095 DT |
452 | unsigned long flags; |
453 | unsigned int index; | |
454 | unsigned int scancode; | |
455 | int retval; | |
ef53a115 | 456 | |
b088ba65 | 457 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
458 | |
459 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
460 | index = ke->index; | |
461 | } else { | |
462 | retval = input_scancode_to_scalar(ke, &scancode); | |
463 | if (retval) | |
464 | goto out; | |
465 | ||
b088ba65 | 466 | index = ir_lookup_by_scancode(rc_map, scancode); |
9f470095 DT |
467 | } |
468 | ||
54e74b87 DT |
469 | if (index < rc_map->len) { |
470 | entry = &rc_map->scan[index]; | |
471 | ||
472 | ke->index = index; | |
473 | ke->keycode = entry->keycode; | |
474 | ke->len = sizeof(entry->scancode); | |
475 | memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode)); | |
476 | ||
477 | } else if (!(ke->flags & INPUT_KEYMAP_BY_INDEX)) { | |
478 | /* | |
479 | * We do not really know the valid range of scancodes | |
480 | * so let's respond with KEY_RESERVED to anything we | |
481 | * do not have mapping for [yet]. | |
482 | */ | |
483 | ke->index = index; | |
484 | ke->keycode = KEY_RESERVED; | |
485 | } else { | |
9f470095 DT |
486 | retval = -EINVAL; |
487 | goto out; | |
e97f4677 MCC |
488 | } |
489 | ||
47c5ba53 DT |
490 | retval = 0; |
491 | ||
9f470095 | 492 | out: |
b088ba65 | 493 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 494 | return retval; |
ef53a115 MCC |
495 | } |
496 | ||
497 | /** | |
ca86674b | 498 | * rc_g_keycode_from_table() - gets the keycode that corresponds to a scancode |
d8b4b582 DH |
499 | * @dev: the struct rc_dev descriptor of the device |
500 | * @scancode: the scancode to look for | |
501 | * @return: the corresponding keycode, or KEY_RESERVED | |
ef53a115 | 502 | * |
d8b4b582 DH |
503 | * This routine is used by drivers which need to convert a scancode to a |
504 | * keycode. Normally it should not be used since drivers should have no | |
505 | * interest in keycodes. | |
ef53a115 | 506 | */ |
ca86674b | 507 | u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode) |
ef53a115 | 508 | { |
b088ba65 | 509 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
510 | unsigned int keycode; |
511 | unsigned int index; | |
512 | unsigned long flags; | |
513 | ||
b088ba65 | 514 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 | 515 | |
b088ba65 MCC |
516 | index = ir_lookup_by_scancode(rc_map, scancode); |
517 | keycode = index < rc_map->len ? | |
518 | rc_map->scan[index].keycode : KEY_RESERVED; | |
9f470095 | 519 | |
b088ba65 | 520 | spin_unlock_irqrestore(&rc_map->lock, flags); |
ef53a115 | 521 | |
35438946 MCC |
522 | if (keycode != KEY_RESERVED) |
523 | IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n", | |
d8b4b582 | 524 | dev->input_name, scancode, keycode); |
9f470095 | 525 | |
b3074c0a | 526 | return keycode; |
ef53a115 | 527 | } |
ca86674b | 528 | EXPORT_SYMBOL_GPL(rc_g_keycode_from_table); |
ef53a115 | 529 | |
6660de56 | 530 | /** |
62c65031 | 531 | * ir_do_keyup() - internal function to signal the release of a keypress |
d8b4b582 | 532 | * @dev: the struct rc_dev descriptor of the device |
98c32bcd | 533 | * @sync: whether or not to call input_sync |
6660de56 | 534 | * |
62c65031 DH |
535 | * This function is used internally to release a keypress, it must be |
536 | * called with keylock held. | |
a374fef4 | 537 | */ |
98c32bcd | 538 | static void ir_do_keyup(struct rc_dev *dev, bool sync) |
a374fef4 | 539 | { |
d8b4b582 | 540 | if (!dev->keypressed) |
a374fef4 DH |
541 | return; |
542 | ||
d8b4b582 DH |
543 | IR_dprintk(1, "keyup key 0x%04x\n", dev->last_keycode); |
544 | input_report_key(dev->input_dev, dev->last_keycode, 0); | |
153a60bb | 545 | led_trigger_event(led_feedback, LED_OFF); |
98c32bcd JW |
546 | if (sync) |
547 | input_sync(dev->input_dev); | |
d8b4b582 | 548 | dev->keypressed = false; |
a374fef4 | 549 | } |
62c65031 DH |
550 | |
551 | /** | |
ca86674b | 552 | * rc_keyup() - signals the release of a keypress |
d8b4b582 | 553 | * @dev: the struct rc_dev descriptor of the device |
62c65031 DH |
554 | * |
555 | * This routine is used to signal that a key has been released on the | |
556 | * remote control. | |
557 | */ | |
ca86674b | 558 | void rc_keyup(struct rc_dev *dev) |
62c65031 DH |
559 | { |
560 | unsigned long flags; | |
62c65031 | 561 | |
d8b4b582 | 562 | spin_lock_irqsave(&dev->keylock, flags); |
98c32bcd | 563 | ir_do_keyup(dev, true); |
d8b4b582 | 564 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 565 | } |
ca86674b | 566 | EXPORT_SYMBOL_GPL(rc_keyup); |
a374fef4 DH |
567 | |
568 | /** | |
569 | * ir_timer_keyup() - generates a keyup event after a timeout | |
d8b4b582 | 570 | * @cookie: a pointer to the struct rc_dev for the device |
a374fef4 DH |
571 | * |
572 | * This routine will generate a keyup event some time after a keydown event | |
573 | * is generated when no further activity has been detected. | |
6660de56 | 574 | */ |
a374fef4 | 575 | static void ir_timer_keyup(unsigned long cookie) |
6660de56 | 576 | { |
d8b4b582 | 577 | struct rc_dev *dev = (struct rc_dev *)cookie; |
a374fef4 DH |
578 | unsigned long flags; |
579 | ||
580 | /* | |
581 | * ir->keyup_jiffies is used to prevent a race condition if a | |
582 | * hardware interrupt occurs at this point and the keyup timer | |
583 | * event is moved further into the future as a result. | |
584 | * | |
585 | * The timer will then be reactivated and this function called | |
586 | * again in the future. We need to exit gracefully in that case | |
587 | * to allow the input subsystem to do its auto-repeat magic or | |
588 | * a keyup event might follow immediately after the keydown. | |
589 | */ | |
d8b4b582 DH |
590 | spin_lock_irqsave(&dev->keylock, flags); |
591 | if (time_is_before_eq_jiffies(dev->keyup_jiffies)) | |
98c32bcd | 592 | ir_do_keyup(dev, true); |
d8b4b582 | 593 | spin_unlock_irqrestore(&dev->keylock, flags); |
a374fef4 DH |
594 | } |
595 | ||
596 | /** | |
ca86674b | 597 | * rc_repeat() - signals that a key is still pressed |
d8b4b582 | 598 | * @dev: the struct rc_dev descriptor of the device |
a374fef4 DH |
599 | * |
600 | * This routine is used by IR decoders when a repeat message which does | |
601 | * not include the necessary bits to reproduce the scancode has been | |
602 | * received. | |
603 | */ | |
ca86674b | 604 | void rc_repeat(struct rc_dev *dev) |
a374fef4 DH |
605 | { |
606 | unsigned long flags; | |
6660de56 | 607 | |
d8b4b582 | 608 | spin_lock_irqsave(&dev->keylock, flags); |
a374fef4 | 609 | |
d8b4b582 | 610 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, dev->last_scancode); |
98c32bcd | 611 | input_sync(dev->input_dev); |
ed4d3876 | 612 | |
d8b4b582 | 613 | if (!dev->keypressed) |
a374fef4 | 614 | goto out; |
6660de56 | 615 | |
d8b4b582 DH |
616 | dev->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT); |
617 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); | |
a374fef4 DH |
618 | |
619 | out: | |
d8b4b582 | 620 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 621 | } |
ca86674b | 622 | EXPORT_SYMBOL_GPL(rc_repeat); |
6660de56 MCC |
623 | |
624 | /** | |
62c65031 | 625 | * ir_do_keydown() - internal function to process a keypress |
d8b4b582 | 626 | * @dev: the struct rc_dev descriptor of the device |
120703f9 | 627 | * @protocol: the protocol of the keypress |
62c65031 DH |
628 | * @scancode: the scancode of the keypress |
629 | * @keycode: the keycode of the keypress | |
630 | * @toggle: the toggle value of the keypress | |
6660de56 | 631 | * |
62c65031 DH |
632 | * This function is used internally to register a keypress, it must be |
633 | * called with keylock held. | |
6660de56 | 634 | */ |
120703f9 DH |
635 | static void ir_do_keydown(struct rc_dev *dev, enum rc_type protocol, |
636 | u32 scancode, u32 keycode, u8 toggle) | |
6660de56 | 637 | { |
99b0f3c9 | 638 | bool new_event = (!dev->keypressed || |
120703f9 | 639 | dev->last_protocol != protocol || |
99b0f3c9 | 640 | dev->last_scancode != scancode || |
120703f9 | 641 | dev->last_toggle != toggle); |
6660de56 | 642 | |
98c32bcd JW |
643 | if (new_event && dev->keypressed) |
644 | ir_do_keyup(dev, false); | |
6660de56 | 645 | |
98c32bcd | 646 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode); |
a374fef4 | 647 | |
98c32bcd JW |
648 | if (new_event && keycode != KEY_RESERVED) { |
649 | /* Register a keypress */ | |
650 | dev->keypressed = true; | |
120703f9 | 651 | dev->last_protocol = protocol; |
98c32bcd JW |
652 | dev->last_scancode = scancode; |
653 | dev->last_toggle = toggle; | |
654 | dev->last_keycode = keycode; | |
655 | ||
656 | IR_dprintk(1, "%s: key down event, " | |
120703f9 DH |
657 | "key 0x%04x, protocol 0x%04x, scancode 0x%08x\n", |
658 | dev->input_name, keycode, protocol, scancode); | |
98c32bcd | 659 | input_report_key(dev->input_dev, keycode, 1); |
70a2f912 JH |
660 | |
661 | led_trigger_event(led_feedback, LED_FULL); | |
98c32bcd | 662 | } |
ed4d3876 | 663 | |
d8b4b582 | 664 | input_sync(dev->input_dev); |
62c65031 | 665 | } |
6660de56 | 666 | |
62c65031 | 667 | /** |
ca86674b | 668 | * rc_keydown() - generates input event for a key press |
d8b4b582 | 669 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
670 | * @protocol: the protocol for the keypress |
671 | * @scancode: the scancode for the keypress | |
62c65031 DH |
672 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
673 | * support toggle values, this should be set to zero) | |
674 | * | |
d8b4b582 DH |
675 | * This routine is used to signal that a key has been pressed on the |
676 | * remote control. | |
62c65031 | 677 | */ |
120703f9 | 678 | void rc_keydown(struct rc_dev *dev, enum rc_type protocol, u32 scancode, u8 toggle) |
62c65031 DH |
679 | { |
680 | unsigned long flags; | |
ca86674b | 681 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 682 | |
d8b4b582 | 683 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 684 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
62c65031 | 685 | |
d8b4b582 DH |
686 | if (dev->keypressed) { |
687 | dev->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT); | |
688 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); | |
62c65031 | 689 | } |
d8b4b582 | 690 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 691 | } |
ca86674b | 692 | EXPORT_SYMBOL_GPL(rc_keydown); |
6660de56 | 693 | |
62c65031 | 694 | /** |
ca86674b | 695 | * rc_keydown_notimeout() - generates input event for a key press without |
62c65031 | 696 | * an automatic keyup event at a later time |
d8b4b582 | 697 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
698 | * @protocol: the protocol for the keypress |
699 | * @scancode: the scancode for the keypress | |
62c65031 DH |
700 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
701 | * support toggle values, this should be set to zero) | |
702 | * | |
d8b4b582 | 703 | * This routine is used to signal that a key has been pressed on the |
ca86674b | 704 | * remote control. The driver must manually call rc_keyup() at a later stage. |
62c65031 | 705 | */ |
120703f9 DH |
706 | void rc_keydown_notimeout(struct rc_dev *dev, enum rc_type protocol, |
707 | u32 scancode, u8 toggle) | |
62c65031 DH |
708 | { |
709 | unsigned long flags; | |
ca86674b | 710 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 711 | |
d8b4b582 | 712 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 713 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
d8b4b582 | 714 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 715 | } |
ca86674b | 716 | EXPORT_SYMBOL_GPL(rc_keydown_notimeout); |
62c65031 | 717 | |
8b2ff320 SK |
718 | int rc_open(struct rc_dev *rdev) |
719 | { | |
720 | int rval = 0; | |
721 | ||
722 | if (!rdev) | |
723 | return -EINVAL; | |
724 | ||
725 | mutex_lock(&rdev->lock); | |
f02dcdd1 | 726 | if (!rdev->users++ && rdev->open != NULL) |
8b2ff320 SK |
727 | rval = rdev->open(rdev); |
728 | ||
729 | if (rval) | |
730 | rdev->users--; | |
731 | ||
732 | mutex_unlock(&rdev->lock); | |
733 | ||
734 | return rval; | |
735 | } | |
736 | EXPORT_SYMBOL_GPL(rc_open); | |
737 | ||
d8b4b582 | 738 | static int ir_open(struct input_dev *idev) |
ef53a115 | 739 | { |
d8b4b582 | 740 | struct rc_dev *rdev = input_get_drvdata(idev); |
75543cce | 741 | |
8b2ff320 SK |
742 | return rc_open(rdev); |
743 | } | |
744 | ||
745 | void rc_close(struct rc_dev *rdev) | |
746 | { | |
747 | if (rdev) { | |
748 | mutex_lock(&rdev->lock); | |
749 | ||
81b7d14e | 750 | if (!--rdev->users && rdev->close != NULL) |
8b2ff320 SK |
751 | rdev->close(rdev); |
752 | ||
753 | mutex_unlock(&rdev->lock); | |
754 | } | |
ef53a115 | 755 | } |
8b2ff320 | 756 | EXPORT_SYMBOL_GPL(rc_close); |
d4b778d3 | 757 | |
d8b4b582 | 758 | static void ir_close(struct input_dev *idev) |
f6fc5049 | 759 | { |
d8b4b582 | 760 | struct rc_dev *rdev = input_get_drvdata(idev); |
8b2ff320 | 761 | rc_close(rdev); |
f6fc5049 | 762 | } |
f6fc5049 | 763 | |
bc2a6c57 | 764 | /* class for /sys/class/rc */ |
40fc5325 | 765 | static char *rc_devnode(struct device *dev, umode_t *mode) |
bc2a6c57 MCC |
766 | { |
767 | return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); | |
768 | } | |
769 | ||
40fc5325 | 770 | static struct class rc_class = { |
bc2a6c57 | 771 | .name = "rc", |
40fc5325 | 772 | .devnode = rc_devnode, |
bc2a6c57 MCC |
773 | }; |
774 | ||
c003ab1b DH |
775 | /* |
776 | * These are the protocol textual descriptions that are | |
777 | * used by the sysfs protocols file. Note that the order | |
778 | * of the entries is relevant. | |
779 | */ | |
bc2a6c57 MCC |
780 | static struct { |
781 | u64 type; | |
782 | char *name; | |
9f0bf366 | 783 | const char *module_name; |
bc2a6c57 | 784 | } proto_names[] = { |
9f0bf366 HK |
785 | { RC_BIT_NONE, "none", NULL }, |
786 | { RC_BIT_OTHER, "other", NULL }, | |
787 | { RC_BIT_UNKNOWN, "unknown", NULL }, | |
c003ab1b | 788 | { RC_BIT_RC5 | |
9f0bf366 HK |
789 | RC_BIT_RC5X, "rc-5", "ir-rc5-decoder" }, |
790 | { RC_BIT_NEC, "nec", "ir-nec-decoder" }, | |
c003ab1b DH |
791 | { RC_BIT_RC6_0 | |
792 | RC_BIT_RC6_6A_20 | | |
793 | RC_BIT_RC6_6A_24 | | |
794 | RC_BIT_RC6_6A_32 | | |
9f0bf366 HK |
795 | RC_BIT_RC6_MCE, "rc-6", "ir-rc6-decoder" }, |
796 | { RC_BIT_JVC, "jvc", "ir-jvc-decoder" }, | |
c003ab1b DH |
797 | { RC_BIT_SONY12 | |
798 | RC_BIT_SONY15 | | |
9f0bf366 HK |
799 | RC_BIT_SONY20, "sony", "ir-sony-decoder" }, |
800 | { RC_BIT_RC5_SZ, "rc-5-sz", "ir-rc5-decoder" }, | |
801 | { RC_BIT_SANYO, "sanyo", "ir-sanyo-decoder" }, | |
802 | { RC_BIT_SHARP, "sharp", "ir-sharp-decoder" }, | |
803 | { RC_BIT_MCE_KBD, "mce_kbd", "ir-mce_kbd-decoder" }, | |
804 | { RC_BIT_XMP, "xmp", "ir-xmp-decoder" }, | |
bc2a6c57 MCC |
805 | }; |
806 | ||
bc2a6c57 | 807 | /** |
ab88c66d JH |
808 | * struct rc_filter_attribute - Device attribute relating to a filter type. |
809 | * @attr: Device attribute. | |
810 | * @type: Filter type. | |
811 | * @mask: false for filter value, true for filter mask. | |
812 | */ | |
813 | struct rc_filter_attribute { | |
814 | struct device_attribute attr; | |
815 | enum rc_filter_type type; | |
816 | bool mask; | |
817 | }; | |
818 | #define to_rc_filter_attr(a) container_of(a, struct rc_filter_attribute, attr) | |
819 | ||
820 | #define RC_PROTO_ATTR(_name, _mode, _show, _store, _type) \ | |
821 | struct rc_filter_attribute dev_attr_##_name = { \ | |
822 | .attr = __ATTR(_name, _mode, _show, _store), \ | |
823 | .type = (_type), \ | |
824 | } | |
825 | #define RC_FILTER_ATTR(_name, _mode, _show, _store, _type, _mask) \ | |
826 | struct rc_filter_attribute dev_attr_##_name = { \ | |
827 | .attr = __ATTR(_name, _mode, _show, _store), \ | |
828 | .type = (_type), \ | |
829 | .mask = (_mask), \ | |
830 | } | |
831 | ||
dd6ff6a0 DH |
832 | static bool lirc_is_present(void) |
833 | { | |
834 | #if defined(CONFIG_LIRC_MODULE) | |
835 | struct module *lirc; | |
836 | ||
837 | mutex_lock(&module_mutex); | |
838 | lirc = find_module("lirc_dev"); | |
839 | mutex_unlock(&module_mutex); | |
840 | ||
841 | return lirc ? true : false; | |
842 | #elif defined(CONFIG_LIRC) | |
843 | return true; | |
844 | #else | |
845 | return false; | |
846 | #endif | |
847 | } | |
848 | ||
ab88c66d JH |
849 | /** |
850 | * show_protocols() - shows the current/wakeup IR protocol(s) | |
d8b4b582 | 851 | * @device: the device descriptor |
da6e162d | 852 | * @mattr: the device attribute struct |
bc2a6c57 MCC |
853 | * @buf: a pointer to the output buffer |
854 | * | |
855 | * This routine is a callback routine for input read the IR protocol type(s). | |
ab88c66d | 856 | * it is trigged by reading /sys/class/rc/rc?/[wakeup_]protocols. |
bc2a6c57 MCC |
857 | * It returns the protocol names of supported protocols. |
858 | * Enabled protocols are printed in brackets. | |
08aeb7c9 JW |
859 | * |
860 | * dev->lock is taken to guard against races between device | |
861 | * registration, store_protocols and show_protocols. | |
bc2a6c57 | 862 | */ |
d8b4b582 | 863 | static ssize_t show_protocols(struct device *device, |
bc2a6c57 MCC |
864 | struct device_attribute *mattr, char *buf) |
865 | { | |
d8b4b582 | 866 | struct rc_dev *dev = to_rc_dev(device); |
ab88c66d | 867 | struct rc_filter_attribute *fattr = to_rc_filter_attr(mattr); |
bc2a6c57 MCC |
868 | u64 allowed, enabled; |
869 | char *tmp = buf; | |
870 | int i; | |
871 | ||
872 | /* Device is being removed */ | |
d8b4b582 | 873 | if (!dev) |
bc2a6c57 MCC |
874 | return -EINVAL; |
875 | ||
08aeb7c9 JW |
876 | mutex_lock(&dev->lock); |
877 | ||
da6e162d | 878 | if (fattr->type == RC_FILTER_NORMAL) { |
c5540fbb | 879 | enabled = dev->enabled_protocols; |
d24b69fc MCC |
880 | allowed = dev->allowed_protocols; |
881 | if (dev->raw && !allowed) | |
da6e162d | 882 | allowed = ir_raw_get_allowed_protocols(); |
da6e162d | 883 | } else { |
c5540fbb DH |
884 | enabled = dev->enabled_wakeup_protocols; |
885 | allowed = dev->allowed_wakeup_protocols; | |
30ebc5e4 | 886 | } |
bc2a6c57 | 887 | |
da6e162d DH |
888 | mutex_unlock(&dev->lock); |
889 | ||
890 | IR_dprintk(1, "%s: allowed - 0x%llx, enabled - 0x%llx\n", | |
891 | __func__, (long long)allowed, (long long)enabled); | |
bc2a6c57 MCC |
892 | |
893 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
894 | if (allowed & enabled & proto_names[i].type) | |
895 | tmp += sprintf(tmp, "[%s] ", proto_names[i].name); | |
896 | else if (allowed & proto_names[i].type) | |
897 | tmp += sprintf(tmp, "%s ", proto_names[i].name); | |
c003ab1b DH |
898 | |
899 | if (allowed & proto_names[i].type) | |
900 | allowed &= ~proto_names[i].type; | |
bc2a6c57 MCC |
901 | } |
902 | ||
dd6ff6a0 | 903 | if (dev->driver_type == RC_DRIVER_IR_RAW && lirc_is_present()) |
275ddb40 DH |
904 | tmp += sprintf(tmp, "[lirc] "); |
905 | ||
bc2a6c57 MCC |
906 | if (tmp != buf) |
907 | tmp--; | |
908 | *tmp = '\n'; | |
08aeb7c9 | 909 | |
bc2a6c57 MCC |
910 | return tmp + 1 - buf; |
911 | } | |
912 | ||
913 | /** | |
da6e162d DH |
914 | * parse_protocol_change() - parses a protocol change request |
915 | * @protocols: pointer to the bitmask of current protocols | |
916 | * @buf: pointer to the buffer with a list of changes | |
bc2a6c57 | 917 | * |
da6e162d DH |
918 | * Writing "+proto" will add a protocol to the protocol mask. |
919 | * Writing "-proto" will remove a protocol from protocol mask. | |
bc2a6c57 MCC |
920 | * Writing "proto" will enable only "proto". |
921 | * Writing "none" will disable all protocols. | |
da6e162d | 922 | * Returns the number of changes performed or a negative error code. |
bc2a6c57 | 923 | */ |
da6e162d | 924 | static int parse_protocol_change(u64 *protocols, const char *buf) |
bc2a6c57 | 925 | { |
bc2a6c57 | 926 | const char *tmp; |
da6e162d DH |
927 | unsigned count = 0; |
928 | bool enable, disable; | |
bc2a6c57 | 929 | u64 mask; |
da6e162d | 930 | int i; |
bc2a6c57 | 931 | |
da6e162d | 932 | while ((tmp = strsep((char **)&buf, " \n")) != NULL) { |
bc2a6c57 MCC |
933 | if (!*tmp) |
934 | break; | |
935 | ||
936 | if (*tmp == '+') { | |
937 | enable = true; | |
938 | disable = false; | |
939 | tmp++; | |
940 | } else if (*tmp == '-') { | |
941 | enable = false; | |
942 | disable = true; | |
943 | tmp++; | |
944 | } else { | |
945 | enable = false; | |
946 | disable = false; | |
947 | } | |
948 | ||
c003ab1b DH |
949 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { |
950 | if (!strcasecmp(tmp, proto_names[i].name)) { | |
951 | mask = proto_names[i].type; | |
952 | break; | |
bc2a6c57 | 953 | } |
bc2a6c57 MCC |
954 | } |
955 | ||
c003ab1b | 956 | if (i == ARRAY_SIZE(proto_names)) { |
275ddb40 DH |
957 | if (!strcasecmp(tmp, "lirc")) |
958 | mask = 0; | |
959 | else { | |
960 | IR_dprintk(1, "Unknown protocol: '%s'\n", tmp); | |
961 | return -EINVAL; | |
962 | } | |
c003ab1b DH |
963 | } |
964 | ||
965 | count++; | |
966 | ||
bc2a6c57 | 967 | if (enable) |
da6e162d | 968 | *protocols |= mask; |
bc2a6c57 | 969 | else if (disable) |
da6e162d | 970 | *protocols &= ~mask; |
bc2a6c57 | 971 | else |
da6e162d | 972 | *protocols = mask; |
bc2a6c57 MCC |
973 | } |
974 | ||
975 | if (!count) { | |
976 | IR_dprintk(1, "Protocol not specified\n"); | |
da6e162d DH |
977 | return -EINVAL; |
978 | } | |
979 | ||
980 | return count; | |
981 | } | |
982 | ||
9f0bf366 HK |
983 | static void ir_raw_load_modules(u64 *protocols) |
984 | ||
985 | { | |
986 | u64 available; | |
987 | int i, ret; | |
988 | ||
989 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
990 | if (proto_names[i].type == RC_BIT_NONE || | |
991 | proto_names[i].type & (RC_BIT_OTHER | RC_BIT_UNKNOWN)) | |
992 | continue; | |
993 | ||
994 | available = ir_raw_get_allowed_protocols(); | |
995 | if (!(*protocols & proto_names[i].type & ~available)) | |
996 | continue; | |
997 | ||
998 | if (!proto_names[i].module_name) { | |
999 | pr_err("Can't enable IR protocol %s\n", | |
1000 | proto_names[i].name); | |
1001 | *protocols &= ~proto_names[i].type; | |
1002 | continue; | |
1003 | } | |
1004 | ||
1005 | ret = request_module("%s", proto_names[i].module_name); | |
1006 | if (ret < 0) { | |
1007 | pr_err("Couldn't load IR protocol module %s\n", | |
1008 | proto_names[i].module_name); | |
1009 | *protocols &= ~proto_names[i].type; | |
1010 | continue; | |
1011 | } | |
1012 | msleep(20); | |
1013 | available = ir_raw_get_allowed_protocols(); | |
1014 | if (!(*protocols & proto_names[i].type & ~available)) | |
1015 | continue; | |
1016 | ||
1017 | pr_err("Loaded IR protocol module %s, \ | |
1018 | but protocol %s still not available\n", | |
1019 | proto_names[i].module_name, | |
1020 | proto_names[i].name); | |
1021 | *protocols &= ~proto_names[i].type; | |
1022 | } | |
1023 | } | |
1024 | ||
da6e162d DH |
1025 | /** |
1026 | * store_protocols() - changes the current/wakeup IR protocol(s) | |
1027 | * @device: the device descriptor | |
1028 | * @mattr: the device attribute struct | |
1029 | * @buf: a pointer to the input buffer | |
1030 | * @len: length of the input buffer | |
1031 | * | |
1032 | * This routine is for changing the IR protocol type. | |
1033 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]protocols. | |
1034 | * See parse_protocol_change() for the valid commands. | |
1035 | * Returns @len on success or a negative error code. | |
1036 | * | |
1037 | * dev->lock is taken to guard against races between device | |
1038 | * registration, store_protocols and show_protocols. | |
1039 | */ | |
1040 | static ssize_t store_protocols(struct device *device, | |
1041 | struct device_attribute *mattr, | |
1042 | const char *buf, size_t len) | |
1043 | { | |
1044 | struct rc_dev *dev = to_rc_dev(device); | |
1045 | struct rc_filter_attribute *fattr = to_rc_filter_attr(mattr); | |
1046 | u64 *current_protocols; | |
1047 | int (*change_protocol)(struct rc_dev *dev, u64 *rc_type); | |
1048 | struct rc_scancode_filter *filter; | |
1049 | int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter); | |
1050 | u64 old_protocols, new_protocols; | |
1051 | ssize_t rc; | |
1052 | ||
1053 | /* Device is being removed */ | |
1054 | if (!dev) | |
1055 | return -EINVAL; | |
1056 | ||
1057 | if (fattr->type == RC_FILTER_NORMAL) { | |
1058 | IR_dprintk(1, "Normal protocol change requested\n"); | |
c5540fbb | 1059 | current_protocols = &dev->enabled_protocols; |
da6e162d | 1060 | change_protocol = dev->change_protocol; |
c5540fbb | 1061 | filter = &dev->scancode_filter; |
da6e162d DH |
1062 | set_filter = dev->s_filter; |
1063 | } else { | |
1064 | IR_dprintk(1, "Wakeup protocol change requested\n"); | |
c5540fbb | 1065 | current_protocols = &dev->enabled_wakeup_protocols; |
da6e162d | 1066 | change_protocol = dev->change_wakeup_protocol; |
c5540fbb | 1067 | filter = &dev->scancode_wakeup_filter; |
da6e162d DH |
1068 | set_filter = dev->s_wakeup_filter; |
1069 | } | |
1070 | ||
1071 | if (!change_protocol) { | |
1072 | IR_dprintk(1, "Protocol switching not supported\n"); | |
1073 | return -EINVAL; | |
1074 | } | |
1075 | ||
1076 | mutex_lock(&dev->lock); | |
1077 | ||
1078 | old_protocols = *current_protocols; | |
1079 | new_protocols = old_protocols; | |
1080 | rc = parse_protocol_change(&new_protocols, buf); | |
1081 | if (rc < 0) | |
1082 | goto out; | |
1083 | ||
1084 | rc = change_protocol(dev, &new_protocols); | |
1085 | if (rc < 0) { | |
1086 | IR_dprintk(1, "Error setting protocols to 0x%llx\n", | |
1087 | (long long)new_protocols); | |
08aeb7c9 | 1088 | goto out; |
bc2a6c57 MCC |
1089 | } |
1090 | ||
9f0bf366 HK |
1091 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1092 | ir_raw_load_modules(&new_protocols); | |
1093 | ||
983c5bd2 JH |
1094 | if (new_protocols != old_protocols) { |
1095 | *current_protocols = new_protocols; | |
1096 | IR_dprintk(1, "Protocols changed to 0x%llx\n", | |
1097 | (long long)new_protocols); | |
bc2a6c57 MCC |
1098 | } |
1099 | ||
6bea25af | 1100 | /* |
983c5bd2 JH |
1101 | * If a protocol change was attempted the filter may need updating, even |
1102 | * if the actual protocol mask hasn't changed (since the driver may have | |
1103 | * cleared the filter). | |
6bea25af JH |
1104 | * Try setting the same filter with the new protocol (if any). |
1105 | * Fall back to clearing the filter. | |
1106 | */ | |
da6e162d DH |
1107 | if (set_filter && filter->mask) { |
1108 | if (new_protocols) | |
1109 | rc = set_filter(dev, filter); | |
1110 | else | |
1111 | rc = -1; | |
6bea25af | 1112 | |
da6e162d DH |
1113 | if (rc < 0) { |
1114 | filter->data = 0; | |
1115 | filter->mask = 0; | |
1116 | set_filter(dev, filter); | |
1117 | } | |
6bea25af JH |
1118 | } |
1119 | ||
da6e162d | 1120 | rc = len; |
08aeb7c9 JW |
1121 | |
1122 | out: | |
1123 | mutex_unlock(&dev->lock); | |
da6e162d | 1124 | return rc; |
bc2a6c57 MCC |
1125 | } |
1126 | ||
00942d1a JH |
1127 | /** |
1128 | * show_filter() - shows the current scancode filter value or mask | |
1129 | * @device: the device descriptor | |
1130 | * @attr: the device attribute struct | |
1131 | * @buf: a pointer to the output buffer | |
1132 | * | |
1133 | * This routine is a callback routine to read a scancode filter value or mask. | |
1134 | * It is trigged by reading /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1135 | * It prints the current scancode filter value or mask of the appropriate filter | |
1136 | * type in hexadecimal into @buf and returns the size of the buffer. | |
1137 | * | |
1138 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1139 | * compared against input scancodes and non-matching scancodes are discarded. | |
1140 | * | |
1141 | * dev->lock is taken to guard against races between device registration, | |
1142 | * store_filter and show_filter. | |
1143 | */ | |
1144 | static ssize_t show_filter(struct device *device, | |
1145 | struct device_attribute *attr, | |
1146 | char *buf) | |
1147 | { | |
1148 | struct rc_dev *dev = to_rc_dev(device); | |
1149 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1150 | struct rc_scancode_filter *filter; |
00942d1a JH |
1151 | u32 val; |
1152 | ||
1153 | /* Device is being removed */ | |
1154 | if (!dev) | |
1155 | return -EINVAL; | |
1156 | ||
da6e162d | 1157 | if (fattr->type == RC_FILTER_NORMAL) |
c5540fbb | 1158 | filter = &dev->scancode_filter; |
da6e162d | 1159 | else |
c5540fbb | 1160 | filter = &dev->scancode_wakeup_filter; |
da6e162d | 1161 | |
00942d1a | 1162 | mutex_lock(&dev->lock); |
da6e162d DH |
1163 | if (fattr->mask) |
1164 | val = filter->mask; | |
00942d1a | 1165 | else |
da6e162d | 1166 | val = filter->data; |
00942d1a JH |
1167 | mutex_unlock(&dev->lock); |
1168 | ||
1169 | return sprintf(buf, "%#x\n", val); | |
1170 | } | |
1171 | ||
1172 | /** | |
1173 | * store_filter() - changes the scancode filter value | |
1174 | * @device: the device descriptor | |
1175 | * @attr: the device attribute struct | |
1176 | * @buf: a pointer to the input buffer | |
1177 | * @len: length of the input buffer | |
1178 | * | |
1179 | * This routine is for changing a scancode filter value or mask. | |
1180 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1181 | * Returns -EINVAL if an invalid filter value for the current protocol was | |
1182 | * specified or if scancode filtering is not supported by the driver, otherwise | |
1183 | * returns @len. | |
1184 | * | |
1185 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1186 | * compared against input scancodes and non-matching scancodes are discarded. | |
1187 | * | |
1188 | * dev->lock is taken to guard against races between device registration, | |
1189 | * store_filter and show_filter. | |
1190 | */ | |
1191 | static ssize_t store_filter(struct device *device, | |
1192 | struct device_attribute *attr, | |
da6e162d | 1193 | const char *buf, size_t len) |
00942d1a JH |
1194 | { |
1195 | struct rc_dev *dev = to_rc_dev(device); | |
1196 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1197 | struct rc_scancode_filter new_filter, *filter; |
00942d1a JH |
1198 | int ret; |
1199 | unsigned long val; | |
23c843b5 | 1200 | int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter); |
da6e162d | 1201 | u64 *enabled_protocols; |
00942d1a JH |
1202 | |
1203 | /* Device is being removed */ | |
1204 | if (!dev) | |
1205 | return -EINVAL; | |
1206 | ||
1207 | ret = kstrtoul(buf, 0, &val); | |
1208 | if (ret < 0) | |
1209 | return ret; | |
1210 | ||
da6e162d DH |
1211 | if (fattr->type == RC_FILTER_NORMAL) { |
1212 | set_filter = dev->s_filter; | |
c5540fbb DH |
1213 | enabled_protocols = &dev->enabled_protocols; |
1214 | filter = &dev->scancode_filter; | |
da6e162d DH |
1215 | } else { |
1216 | set_filter = dev->s_wakeup_filter; | |
c5540fbb DH |
1217 | enabled_protocols = &dev->enabled_wakeup_protocols; |
1218 | filter = &dev->scancode_wakeup_filter; | |
da6e162d DH |
1219 | } |
1220 | ||
99b0f3c9 DH |
1221 | if (!set_filter) |
1222 | return -EINVAL; | |
00942d1a JH |
1223 | |
1224 | mutex_lock(&dev->lock); | |
1225 | ||
da6e162d | 1226 | new_filter = *filter; |
00942d1a | 1227 | if (fattr->mask) |
da6e162d | 1228 | new_filter.mask = val; |
00942d1a | 1229 | else |
da6e162d | 1230 | new_filter.data = val; |
23c843b5 | 1231 | |
da6e162d | 1232 | if (!*enabled_protocols && val) { |
6bea25af JH |
1233 | /* refuse to set a filter unless a protocol is enabled */ |
1234 | ret = -EINVAL; | |
1235 | goto unlock; | |
1236 | } | |
23c843b5 | 1237 | |
da6e162d | 1238 | ret = set_filter(dev, &new_filter); |
99b0f3c9 DH |
1239 | if (ret < 0) |
1240 | goto unlock; | |
00942d1a | 1241 | |
da6e162d | 1242 | *filter = new_filter; |
00942d1a JH |
1243 | |
1244 | unlock: | |
1245 | mutex_unlock(&dev->lock); | |
da6e162d | 1246 | return (ret < 0) ? ret : len; |
00942d1a JH |
1247 | } |
1248 | ||
d8b4b582 DH |
1249 | static void rc_dev_release(struct device *device) |
1250 | { | |
d8b4b582 DH |
1251 | } |
1252 | ||
bc2a6c57 MCC |
1253 | #define ADD_HOTPLUG_VAR(fmt, val...) \ |
1254 | do { \ | |
1255 | int err = add_uevent_var(env, fmt, val); \ | |
1256 | if (err) \ | |
1257 | return err; \ | |
1258 | } while (0) | |
1259 | ||
1260 | static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env) | |
1261 | { | |
d8b4b582 | 1262 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 | 1263 | |
b088ba65 MCC |
1264 | if (dev->rc_map.name) |
1265 | ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name); | |
d8b4b582 DH |
1266 | if (dev->driver_name) |
1267 | ADD_HOTPLUG_VAR("DRV_NAME=%s", dev->driver_name); | |
bc2a6c57 MCC |
1268 | |
1269 | return 0; | |
1270 | } | |
1271 | ||
1272 | /* | |
1273 | * Static device attribute struct with the sysfs attributes for IR's | |
1274 | */ | |
ab88c66d JH |
1275 | static RC_PROTO_ATTR(protocols, S_IRUGO | S_IWUSR, |
1276 | show_protocols, store_protocols, RC_FILTER_NORMAL); | |
1277 | static RC_PROTO_ATTR(wakeup_protocols, S_IRUGO | S_IWUSR, | |
1278 | show_protocols, store_protocols, RC_FILTER_WAKEUP); | |
00942d1a JH |
1279 | static RC_FILTER_ATTR(filter, S_IRUGO|S_IWUSR, |
1280 | show_filter, store_filter, RC_FILTER_NORMAL, false); | |
1281 | static RC_FILTER_ATTR(filter_mask, S_IRUGO|S_IWUSR, | |
1282 | show_filter, store_filter, RC_FILTER_NORMAL, true); | |
1283 | static RC_FILTER_ATTR(wakeup_filter, S_IRUGO|S_IWUSR, | |
1284 | show_filter, store_filter, RC_FILTER_WAKEUP, false); | |
1285 | static RC_FILTER_ATTR(wakeup_filter_mask, S_IRUGO|S_IWUSR, | |
1286 | show_filter, store_filter, RC_FILTER_WAKEUP, true); | |
bc2a6c57 | 1287 | |
99b0f3c9 | 1288 | static struct attribute *rc_dev_protocol_attrs[] = { |
ab88c66d | 1289 | &dev_attr_protocols.attr.attr, |
99b0f3c9 DH |
1290 | NULL, |
1291 | }; | |
1292 | ||
1293 | static struct attribute_group rc_dev_protocol_attr_grp = { | |
1294 | .attrs = rc_dev_protocol_attrs, | |
1295 | }; | |
1296 | ||
1297 | static struct attribute *rc_dev_wakeup_protocol_attrs[] = { | |
ab88c66d | 1298 | &dev_attr_wakeup_protocols.attr.attr, |
99b0f3c9 DH |
1299 | NULL, |
1300 | }; | |
1301 | ||
1302 | static struct attribute_group rc_dev_wakeup_protocol_attr_grp = { | |
1303 | .attrs = rc_dev_wakeup_protocol_attrs, | |
1304 | }; | |
1305 | ||
1306 | static struct attribute *rc_dev_filter_attrs[] = { | |
00942d1a JH |
1307 | &dev_attr_filter.attr.attr, |
1308 | &dev_attr_filter_mask.attr.attr, | |
bc2a6c57 MCC |
1309 | NULL, |
1310 | }; | |
1311 | ||
99b0f3c9 DH |
1312 | static struct attribute_group rc_dev_filter_attr_grp = { |
1313 | .attrs = rc_dev_filter_attrs, | |
bc2a6c57 MCC |
1314 | }; |
1315 | ||
99b0f3c9 DH |
1316 | static struct attribute *rc_dev_wakeup_filter_attrs[] = { |
1317 | &dev_attr_wakeup_filter.attr.attr, | |
1318 | &dev_attr_wakeup_filter_mask.attr.attr, | |
1319 | NULL, | |
1320 | }; | |
1321 | ||
1322 | static struct attribute_group rc_dev_wakeup_filter_attr_grp = { | |
1323 | .attrs = rc_dev_wakeup_filter_attrs, | |
bc2a6c57 MCC |
1324 | }; |
1325 | ||
1326 | static struct device_type rc_dev_type = { | |
d8b4b582 | 1327 | .release = rc_dev_release, |
bc2a6c57 MCC |
1328 | .uevent = rc_dev_uevent, |
1329 | }; | |
1330 | ||
d8b4b582 | 1331 | struct rc_dev *rc_allocate_device(void) |
bc2a6c57 | 1332 | { |
d8b4b582 | 1333 | struct rc_dev *dev; |
bc2a6c57 | 1334 | |
d8b4b582 DH |
1335 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
1336 | if (!dev) | |
1337 | return NULL; | |
1338 | ||
1339 | dev->input_dev = input_allocate_device(); | |
1340 | if (!dev->input_dev) { | |
1341 | kfree(dev); | |
1342 | return NULL; | |
1343 | } | |
1344 | ||
aebd636b DT |
1345 | dev->input_dev->getkeycode = ir_getkeycode; |
1346 | dev->input_dev->setkeycode = ir_setkeycode; | |
d8b4b582 DH |
1347 | input_set_drvdata(dev->input_dev, dev); |
1348 | ||
b088ba65 | 1349 | spin_lock_init(&dev->rc_map.lock); |
d8b4b582 | 1350 | spin_lock_init(&dev->keylock); |
08aeb7c9 | 1351 | mutex_init(&dev->lock); |
d8b4b582 | 1352 | setup_timer(&dev->timer_keyup, ir_timer_keyup, (unsigned long)dev); |
bc2a6c57 | 1353 | |
d8b4b582 | 1354 | dev->dev.type = &rc_dev_type; |
40fc5325 | 1355 | dev->dev.class = &rc_class; |
d8b4b582 DH |
1356 | device_initialize(&dev->dev); |
1357 | ||
1358 | __module_get(THIS_MODULE); | |
1359 | return dev; | |
1360 | } | |
1361 | EXPORT_SYMBOL_GPL(rc_allocate_device); | |
1362 | ||
1363 | void rc_free_device(struct rc_dev *dev) | |
bc2a6c57 | 1364 | { |
b05681b9 MCC |
1365 | if (!dev) |
1366 | return; | |
1367 | ||
3dd94f00 | 1368 | input_free_device(dev->input_dev); |
b05681b9 MCC |
1369 | |
1370 | put_device(&dev->dev); | |
1371 | ||
1372 | kfree(dev); | |
1373 | module_put(THIS_MODULE); | |
d8b4b582 DH |
1374 | } |
1375 | EXPORT_SYMBOL_GPL(rc_free_device); | |
1376 | ||
1377 | int rc_register_device(struct rc_dev *dev) | |
1378 | { | |
5da6e984 | 1379 | static bool raw_init = false; /* raw decoders loaded? */ |
b088ba65 | 1380 | struct rc_map *rc_map; |
bc2a6c57 | 1381 | const char *path; |
fcb13097 DH |
1382 | int attr = 0; |
1383 | int minor; | |
1384 | int rc; | |
bc2a6c57 | 1385 | |
d8b4b582 DH |
1386 | if (!dev || !dev->map_name) |
1387 | return -EINVAL; | |
bc2a6c57 | 1388 | |
d100e659 | 1389 | rc_map = rc_map_get(dev->map_name); |
b088ba65 | 1390 | if (!rc_map) |
d100e659 | 1391 | rc_map = rc_map_get(RC_MAP_EMPTY); |
b088ba65 | 1392 | if (!rc_map || !rc_map->scan || rc_map->size == 0) |
d8b4b582 DH |
1393 | return -EINVAL; |
1394 | ||
1395 | set_bit(EV_KEY, dev->input_dev->evbit); | |
1396 | set_bit(EV_REP, dev->input_dev->evbit); | |
1397 | set_bit(EV_MSC, dev->input_dev->evbit); | |
1398 | set_bit(MSC_SCAN, dev->input_dev->mscbit); | |
1399 | if (dev->open) | |
1400 | dev->input_dev->open = ir_open; | |
1401 | if (dev->close) | |
1402 | dev->input_dev->close = ir_close; | |
1403 | ||
fcb13097 DH |
1404 | minor = ida_simple_get(&rc_ida, 0, RC_DEV_MAX, GFP_KERNEL); |
1405 | if (minor < 0) | |
1406 | return minor; | |
1407 | ||
1408 | dev->minor = minor; | |
1409 | dev_set_name(&dev->dev, "rc%u", dev->minor); | |
1410 | dev_set_drvdata(&dev->dev, dev); | |
587d1b06 | 1411 | |
99b0f3c9 DH |
1412 | dev->dev.groups = dev->sysfs_groups; |
1413 | dev->sysfs_groups[attr++] = &rc_dev_protocol_attr_grp; | |
1414 | if (dev->s_filter) | |
120703f9 | 1415 | dev->sysfs_groups[attr++] = &rc_dev_filter_attr_grp; |
99b0f3c9 DH |
1416 | if (dev->s_wakeup_filter) |
1417 | dev->sysfs_groups[attr++] = &rc_dev_wakeup_filter_attr_grp; | |
1418 | if (dev->change_wakeup_protocol) | |
1419 | dev->sysfs_groups[attr++] = &rc_dev_wakeup_protocol_attr_grp; | |
1420 | dev->sysfs_groups[attr++] = NULL; | |
1421 | ||
26291233 JH |
1422 | /* |
1423 | * Take the lock here, as the device sysfs node will appear | |
1424 | * when device_add() is called, which may trigger an ir-keytable udev | |
1425 | * rule, which will in turn call show_protocols and access | |
1426 | * dev->enabled_protocols before it has been initialized. | |
1427 | */ | |
1428 | mutex_lock(&dev->lock); | |
1429 | ||
d8b4b582 DH |
1430 | rc = device_add(&dev->dev); |
1431 | if (rc) | |
08aeb7c9 | 1432 | goto out_unlock; |
bc2a6c57 | 1433 | |
b088ba65 | 1434 | rc = ir_setkeytable(dev, rc_map); |
d8b4b582 DH |
1435 | if (rc) |
1436 | goto out_dev; | |
1437 | ||
1438 | dev->input_dev->dev.parent = &dev->dev; | |
1439 | memcpy(&dev->input_dev->id, &dev->input_id, sizeof(dev->input_id)); | |
1440 | dev->input_dev->phys = dev->input_phys; | |
1441 | dev->input_dev->name = dev->input_name; | |
8b2ff320 SK |
1442 | |
1443 | /* input_register_device can call ir_open, so unlock mutex here */ | |
1444 | mutex_unlock(&dev->lock); | |
1445 | ||
d8b4b582 | 1446 | rc = input_register_device(dev->input_dev); |
8b2ff320 SK |
1447 | |
1448 | mutex_lock(&dev->lock); | |
1449 | ||
d8b4b582 DH |
1450 | if (rc) |
1451 | goto out_table; | |
bc2a6c57 | 1452 | |
d8b4b582 | 1453 | /* |
25985edc | 1454 | * Default delay of 250ms is too short for some protocols, especially |
d8b4b582 DH |
1455 | * since the timeout is currently set to 250ms. Increase it to 500ms, |
1456 | * to avoid wrong repetition of the keycodes. Note that this must be | |
1457 | * set after the call to input_register_device(). | |
1458 | */ | |
1459 | dev->input_dev->rep[REP_DELAY] = 500; | |
1460 | ||
ca540c8b MCC |
1461 | /* |
1462 | * As a repeat event on protocols like RC-5 and NEC take as long as | |
1463 | * 110/114ms, using 33ms as a repeat period is not the right thing | |
1464 | * to do. | |
1465 | */ | |
1466 | dev->input_dev->rep[REP_PERIOD] = 125; | |
1467 | ||
d8b4b582 | 1468 | path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL); |
4dc0e908 HK |
1469 | dev_info(&dev->dev, "%s as %s\n", |
1470 | dev->input_name ?: "Unspecified device", path ?: "N/A"); | |
bc2a6c57 MCC |
1471 | kfree(path); |
1472 | ||
3a03b86f | 1473 | if (dev->driver_type == RC_DRIVER_IR_RAW) { |
5da6e984 EG |
1474 | /* Load raw decoders, if they aren't already */ |
1475 | if (!raw_init) { | |
1476 | IR_dprintk(1, "Loading raw decoders\n"); | |
1477 | ir_raw_init(); | |
1478 | raw_init = true; | |
1479 | } | |
37fa8716 TM |
1480 | /* calls ir_register_device so unlock mutex here*/ |
1481 | mutex_unlock(&dev->lock); | |
d8b4b582 | 1482 | rc = ir_raw_event_register(dev); |
37fa8716 | 1483 | mutex_lock(&dev->lock); |
d8b4b582 DH |
1484 | if (rc < 0) |
1485 | goto out_input; | |
1486 | } | |
1487 | ||
1488 | if (dev->change_protocol) { | |
fb9b1641 | 1489 | u64 rc_type = (1ll << rc_map->rc_type); |
c003ab1b | 1490 | rc = dev->change_protocol(dev, &rc_type); |
d8b4b582 DH |
1491 | if (rc < 0) |
1492 | goto out_raw; | |
c5540fbb | 1493 | dev->enabled_protocols = rc_type; |
d8b4b582 DH |
1494 | } |
1495 | ||
0528f354 DC |
1496 | mutex_unlock(&dev->lock); |
1497 | ||
fcb13097 DH |
1498 | IR_dprintk(1, "Registered rc%u (driver: %s, remote: %s, mode %s)\n", |
1499 | dev->minor, | |
d8b4b582 | 1500 | dev->driver_name ? dev->driver_name : "unknown", |
b088ba65 | 1501 | rc_map->name ? rc_map->name : "unknown", |
d8b4b582 DH |
1502 | dev->driver_type == RC_DRIVER_IR_RAW ? "raw" : "cooked"); |
1503 | ||
bc2a6c57 | 1504 | return 0; |
d8b4b582 DH |
1505 | |
1506 | out_raw: | |
1507 | if (dev->driver_type == RC_DRIVER_IR_RAW) | |
1508 | ir_raw_event_unregister(dev); | |
1509 | out_input: | |
1510 | input_unregister_device(dev->input_dev); | |
1511 | dev->input_dev = NULL; | |
1512 | out_table: | |
b088ba65 | 1513 | ir_free_table(&dev->rc_map); |
d8b4b582 DH |
1514 | out_dev: |
1515 | device_del(&dev->dev); | |
08aeb7c9 JW |
1516 | out_unlock: |
1517 | mutex_unlock(&dev->lock); | |
fcb13097 | 1518 | ida_simple_remove(&rc_ida, minor); |
d8b4b582 | 1519 | return rc; |
bc2a6c57 | 1520 | } |
d8b4b582 | 1521 | EXPORT_SYMBOL_GPL(rc_register_device); |
bc2a6c57 | 1522 | |
d8b4b582 | 1523 | void rc_unregister_device(struct rc_dev *dev) |
bc2a6c57 | 1524 | { |
d8b4b582 DH |
1525 | if (!dev) |
1526 | return; | |
bc2a6c57 | 1527 | |
d8b4b582 | 1528 | del_timer_sync(&dev->timer_keyup); |
bc2a6c57 | 1529 | |
d8b4b582 DH |
1530 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1531 | ir_raw_event_unregister(dev); | |
1532 | ||
b05681b9 MCC |
1533 | /* Freeing the table should also call the stop callback */ |
1534 | ir_free_table(&dev->rc_map); | |
1535 | IR_dprintk(1, "Freed keycode table\n"); | |
1536 | ||
d8b4b582 DH |
1537 | input_unregister_device(dev->input_dev); |
1538 | dev->input_dev = NULL; | |
1539 | ||
b05681b9 | 1540 | device_del(&dev->dev); |
d8b4b582 | 1541 | |
fcb13097 DH |
1542 | ida_simple_remove(&rc_ida, dev->minor); |
1543 | ||
b05681b9 | 1544 | rc_free_device(dev); |
bc2a6c57 | 1545 | } |
b05681b9 | 1546 | |
d8b4b582 | 1547 | EXPORT_SYMBOL_GPL(rc_unregister_device); |
bc2a6c57 MCC |
1548 | |
1549 | /* | |
1550 | * Init/exit code for the module. Basically, creates/removes /sys/class/rc | |
1551 | */ | |
1552 | ||
6bda9644 | 1553 | static int __init rc_core_init(void) |
bc2a6c57 | 1554 | { |
40fc5325 | 1555 | int rc = class_register(&rc_class); |
bc2a6c57 | 1556 | if (rc) { |
6bda9644 | 1557 | printk(KERN_ERR "rc_core: unable to register rc class\n"); |
bc2a6c57 MCC |
1558 | return rc; |
1559 | } | |
1560 | ||
153a60bb | 1561 | led_trigger_register_simple("rc-feedback", &led_feedback); |
d100e659 | 1562 | rc_map_register(&empty_map); |
bc2a6c57 MCC |
1563 | |
1564 | return 0; | |
1565 | } | |
1566 | ||
6bda9644 | 1567 | static void __exit rc_core_exit(void) |
bc2a6c57 | 1568 | { |
40fc5325 | 1569 | class_unregister(&rc_class); |
153a60bb | 1570 | led_trigger_unregister_simple(led_feedback); |
d100e659 | 1571 | rc_map_unregister(&empty_map); |
bc2a6c57 MCC |
1572 | } |
1573 | ||
e76d4ce4 | 1574 | subsys_initcall(rc_core_init); |
6bda9644 | 1575 | module_exit(rc_core_exit); |
bc2a6c57 | 1576 | |
6bda9644 MCC |
1577 | int rc_core_debug; /* ir_debug level (0,1,2) */ |
1578 | EXPORT_SYMBOL_GPL(rc_core_debug); | |
1579 | module_param_named(debug, rc_core_debug, int, 0644); | |
446e4a64 | 1580 | |
37e59f87 | 1581 | MODULE_AUTHOR("Mauro Carvalho Chehab"); |
446e4a64 | 1582 | MODULE_LICENSE("GPL"); |