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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 | ||
d3d96820 MCC |
15 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
16 | ||
6bda9644 | 17 | #include <media/rc-core.h> |
8ca01d4f | 18 | #include <linux/bsearch.h> |
631493ec MCC |
19 | #include <linux/spinlock.h> |
20 | #include <linux/delay.h> | |
882ead32 | 21 | #include <linux/input.h> |
153a60bb | 22 | #include <linux/leds.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
fcb13097 | 24 | #include <linux/idr.h> |
bc2a6c57 | 25 | #include <linux/device.h> |
7a707b89 | 26 | #include <linux/module.h> |
f62de675 | 27 | #include "rc-core-priv.h" |
ef53a115 | 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 | |
fcb13097 | 32 | #define RC_DEV_MAX 256 |
f6fc5049 | 33 | |
d57ea877 SY |
34 | static const struct { |
35 | const char *name; | |
36 | unsigned int repeat_period; | |
37 | unsigned int scancode_bits; | |
38 | } protocols[] = { | |
6d741bfe SY |
39 | [RC_PROTO_UNKNOWN] = { .name = "unknown", .repeat_period = 250 }, |
40 | [RC_PROTO_OTHER] = { .name = "other", .repeat_period = 250 }, | |
41 | [RC_PROTO_RC5] = { .name = "rc-5", | |
67f0f15a | 42 | .scancode_bits = 0x1f7f, .repeat_period = 250 }, |
6d741bfe | 43 | [RC_PROTO_RC5X_20] = { .name = "rc-5x-20", |
67f0f15a | 44 | .scancode_bits = 0x1f7f3f, .repeat_period = 250 }, |
6d741bfe | 45 | [RC_PROTO_RC5_SZ] = { .name = "rc-5-sz", |
67f0f15a | 46 | .scancode_bits = 0x2fff, .repeat_period = 250 }, |
6d741bfe | 47 | [RC_PROTO_JVC] = { .name = "jvc", |
d57ea877 | 48 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 49 | [RC_PROTO_SONY12] = { .name = "sony-12", |
67f0f15a | 50 | .scancode_bits = 0x1f007f, .repeat_period = 250 }, |
6d741bfe | 51 | [RC_PROTO_SONY15] = { .name = "sony-15", |
67f0f15a | 52 | .scancode_bits = 0xff007f, .repeat_period = 250 }, |
6d741bfe | 53 | [RC_PROTO_SONY20] = { .name = "sony-20", |
67f0f15a | 54 | .scancode_bits = 0x1fff7f, .repeat_period = 250 }, |
6d741bfe | 55 | [RC_PROTO_NEC] = { .name = "nec", |
67f0f15a | 56 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 57 | [RC_PROTO_NECX] = { .name = "nec-x", |
67f0f15a | 58 | .scancode_bits = 0xffffff, .repeat_period = 250 }, |
6d741bfe | 59 | [RC_PROTO_NEC32] = { .name = "nec-32", |
67f0f15a | 60 | .scancode_bits = 0xffffffff, .repeat_period = 250 }, |
6d741bfe | 61 | [RC_PROTO_SANYO] = { .name = "sanyo", |
d57ea877 | 62 | .scancode_bits = 0x1fffff, .repeat_period = 250 }, |
6d741bfe | 63 | [RC_PROTO_MCIR2_KBD] = { .name = "mcir2-kbd", |
67f0f15a | 64 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 65 | [RC_PROTO_MCIR2_MSE] = { .name = "mcir2-mse", |
67f0f15a | 66 | .scancode_bits = 0x1fffff, .repeat_period = 250 }, |
6d741bfe | 67 | [RC_PROTO_RC6_0] = { .name = "rc-6-0", |
67f0f15a | 68 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 69 | [RC_PROTO_RC6_6A_20] = { .name = "rc-6-6a-20", |
67f0f15a | 70 | .scancode_bits = 0xfffff, .repeat_period = 250 }, |
6d741bfe | 71 | [RC_PROTO_RC6_6A_24] = { .name = "rc-6-6a-24", |
67f0f15a | 72 | .scancode_bits = 0xffffff, .repeat_period = 250 }, |
6d741bfe | 73 | [RC_PROTO_RC6_6A_32] = { .name = "rc-6-6a-32", |
67f0f15a | 74 | .scancode_bits = 0xffffffff, .repeat_period = 250 }, |
6d741bfe | 75 | [RC_PROTO_RC6_MCE] = { .name = "rc-6-mce", |
67f0f15a | 76 | .scancode_bits = 0xffff7fff, .repeat_period = 250 }, |
6d741bfe | 77 | [RC_PROTO_SHARP] = { .name = "sharp", |
d57ea877 | 78 | .scancode_bits = 0x1fff, .repeat_period = 250 }, |
6d741bfe SY |
79 | [RC_PROTO_XMP] = { .name = "xmp", .repeat_period = 250 }, |
80 | [RC_PROTO_CEC] = { .name = "cec", .repeat_period = 550 }, | |
d57ea877 | 81 | }; |
a374fef4 | 82 | |
4c7b355d | 83 | /* Used to keep track of known keymaps */ |
631493ec MCC |
84 | static LIST_HEAD(rc_map_list); |
85 | static DEFINE_SPINLOCK(rc_map_lock); | |
153a60bb | 86 | static struct led_trigger *led_feedback; |
631493ec | 87 | |
fcb13097 DH |
88 | /* Used to keep track of rc devices */ |
89 | static DEFINE_IDA(rc_ida); | |
90 | ||
d100e659 | 91 | static struct rc_map_list *seek_rc_map(const char *name) |
631493ec | 92 | { |
d100e659 | 93 | struct rc_map_list *map = NULL; |
631493ec MCC |
94 | |
95 | spin_lock(&rc_map_lock); | |
96 | list_for_each_entry(map, &rc_map_list, list) { | |
97 | if (!strcmp(name, map->map.name)) { | |
98 | spin_unlock(&rc_map_lock); | |
99 | return map; | |
100 | } | |
101 | } | |
102 | spin_unlock(&rc_map_lock); | |
103 | ||
104 | return NULL; | |
105 | } | |
106 | ||
d100e659 | 107 | struct rc_map *rc_map_get(const char *name) |
631493ec MCC |
108 | { |
109 | ||
d100e659 | 110 | struct rc_map_list *map; |
631493ec MCC |
111 | |
112 | map = seek_rc_map(name); | |
2ff56fad | 113 | #ifdef CONFIG_MODULES |
631493ec | 114 | if (!map) { |
8ea5488a | 115 | int rc = request_module("%s", name); |
631493ec | 116 | if (rc < 0) { |
d3d96820 | 117 | pr_err("Couldn't load IR keymap %s\n", name); |
631493ec MCC |
118 | return NULL; |
119 | } | |
120 | msleep(20); /* Give some time for IR to register */ | |
121 | ||
122 | map = seek_rc_map(name); | |
123 | } | |
124 | #endif | |
125 | if (!map) { | |
d3d96820 | 126 | pr_err("IR keymap %s not found\n", name); |
631493ec MCC |
127 | return NULL; |
128 | } | |
129 | ||
130 | printk(KERN_INFO "Registered IR keymap %s\n", map->map.name); | |
131 | ||
132 | return &map->map; | |
133 | } | |
d100e659 | 134 | EXPORT_SYMBOL_GPL(rc_map_get); |
631493ec | 135 | |
d100e659 | 136 | int rc_map_register(struct rc_map_list *map) |
631493ec MCC |
137 | { |
138 | spin_lock(&rc_map_lock); | |
139 | list_add_tail(&map->list, &rc_map_list); | |
140 | spin_unlock(&rc_map_lock); | |
141 | return 0; | |
142 | } | |
d100e659 | 143 | EXPORT_SYMBOL_GPL(rc_map_register); |
631493ec | 144 | |
d100e659 | 145 | void rc_map_unregister(struct rc_map_list *map) |
631493ec MCC |
146 | { |
147 | spin_lock(&rc_map_lock); | |
148 | list_del(&map->list); | |
149 | spin_unlock(&rc_map_lock); | |
150 | } | |
d100e659 | 151 | EXPORT_SYMBOL_GPL(rc_map_unregister); |
631493ec MCC |
152 | |
153 | ||
2f4f58d6 | 154 | static struct rc_map_table empty[] = { |
631493ec MCC |
155 | { 0x2a, KEY_COFFEE }, |
156 | }; | |
157 | ||
d100e659 | 158 | static struct rc_map_list empty_map = { |
631493ec | 159 | .map = { |
6d741bfe SY |
160 | .scan = empty, |
161 | .size = ARRAY_SIZE(empty), | |
162 | .rc_proto = RC_PROTO_UNKNOWN, /* Legacy IR type */ | |
163 | .name = RC_MAP_EMPTY, | |
631493ec MCC |
164 | } |
165 | }; | |
166 | ||
9f470095 DT |
167 | /** |
168 | * ir_create_table() - initializes a scancode table | |
b088ba65 | 169 | * @rc_map: the rc_map to initialize |
9f470095 | 170 | * @name: name to assign to the table |
6d741bfe | 171 | * @rc_proto: ir type to assign to the new table |
9f470095 | 172 | * @size: initial size of the table |
9f470095 | 173 | * |
b088ba65 | 174 | * This routine will initialize the rc_map and will allocate |
d8b4b582 | 175 | * memory to hold at least the specified number of elements. |
f67f366c MCC |
176 | * |
177 | * return: zero on success or a negative error code | |
9f470095 | 178 | */ |
b088ba65 | 179 | static int ir_create_table(struct rc_map *rc_map, |
6d741bfe | 180 | const char *name, u64 rc_proto, size_t size) |
9f470095 | 181 | { |
d54fc3bb HV |
182 | rc_map->name = kstrdup(name, GFP_KERNEL); |
183 | if (!rc_map->name) | |
184 | return -ENOMEM; | |
6d741bfe | 185 | rc_map->rc_proto = rc_proto; |
2f4f58d6 MCC |
186 | rc_map->alloc = roundup_pow_of_two(size * sizeof(struct rc_map_table)); |
187 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); | |
b088ba65 | 188 | rc_map->scan = kmalloc(rc_map->alloc, GFP_KERNEL); |
d54fc3bb HV |
189 | if (!rc_map->scan) { |
190 | kfree(rc_map->name); | |
191 | rc_map->name = NULL; | |
9f470095 | 192 | return -ENOMEM; |
d54fc3bb | 193 | } |
9f470095 DT |
194 | |
195 | IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", | |
b088ba65 | 196 | rc_map->size, rc_map->alloc); |
9f470095 DT |
197 | return 0; |
198 | } | |
199 | ||
200 | /** | |
201 | * ir_free_table() - frees memory allocated by a scancode table | |
b088ba65 | 202 | * @rc_map: the table whose mappings need to be freed |
9f470095 DT |
203 | * |
204 | * This routine will free memory alloctaed for key mappings used by given | |
205 | * scancode table. | |
206 | */ | |
b088ba65 | 207 | static void ir_free_table(struct rc_map *rc_map) |
9f470095 | 208 | { |
b088ba65 | 209 | rc_map->size = 0; |
d54fc3bb | 210 | kfree(rc_map->name); |
c183d358 | 211 | rc_map->name = NULL; |
b088ba65 MCC |
212 | kfree(rc_map->scan); |
213 | rc_map->scan = NULL; | |
9f470095 DT |
214 | } |
215 | ||
7fee03e4 | 216 | /** |
b3074c0a | 217 | * ir_resize_table() - resizes a scancode table if necessary |
b088ba65 | 218 | * @rc_map: the rc_map to resize |
9f470095 | 219 | * @gfp_flags: gfp flags to use when allocating memory |
7fee03e4 | 220 | * |
b088ba65 | 221 | * This routine will shrink the rc_map if it has lots of |
b3074c0a | 222 | * unused entries and grow it if it is full. |
f67f366c MCC |
223 | * |
224 | * return: zero on success or a negative error code | |
7fee03e4 | 225 | */ |
b088ba65 | 226 | static int ir_resize_table(struct rc_map *rc_map, gfp_t gfp_flags) |
7fee03e4 | 227 | { |
b088ba65 | 228 | unsigned int oldalloc = rc_map->alloc; |
b3074c0a | 229 | unsigned int newalloc = oldalloc; |
2f4f58d6 MCC |
230 | struct rc_map_table *oldscan = rc_map->scan; |
231 | struct rc_map_table *newscan; | |
b3074c0a | 232 | |
b088ba65 | 233 | if (rc_map->size == rc_map->len) { |
b3074c0a | 234 | /* All entries in use -> grow keytable */ |
b088ba65 | 235 | if (rc_map->alloc >= IR_TAB_MAX_SIZE) |
b3074c0a | 236 | return -ENOMEM; |
7fee03e4 | 237 | |
b3074c0a DH |
238 | newalloc *= 2; |
239 | IR_dprintk(1, "Growing table to %u bytes\n", newalloc); | |
240 | } | |
7fee03e4 | 241 | |
b088ba65 | 242 | if ((rc_map->len * 3 < rc_map->size) && (oldalloc > IR_TAB_MIN_SIZE)) { |
b3074c0a DH |
243 | /* Less than 1/3 of entries in use -> shrink keytable */ |
244 | newalloc /= 2; | |
245 | IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc); | |
246 | } | |
7fee03e4 | 247 | |
b3074c0a DH |
248 | if (newalloc == oldalloc) |
249 | return 0; | |
7fee03e4 | 250 | |
9f470095 | 251 | newscan = kmalloc(newalloc, gfp_flags); |
b3074c0a DH |
252 | if (!newscan) { |
253 | IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc); | |
254 | return -ENOMEM; | |
255 | } | |
7fee03e4 | 256 | |
2f4f58d6 | 257 | memcpy(newscan, rc_map->scan, rc_map->len * sizeof(struct rc_map_table)); |
b088ba65 MCC |
258 | rc_map->scan = newscan; |
259 | rc_map->alloc = newalloc; | |
2f4f58d6 | 260 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); |
b3074c0a DH |
261 | kfree(oldscan); |
262 | return 0; | |
7fee03e4 MCC |
263 | } |
264 | ||
f6fc5049 | 265 | /** |
9f470095 | 266 | * ir_update_mapping() - set a keycode in the scancode->keycode table |
d8b4b582 | 267 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 268 | * @rc_map: scancode table to be adjusted |
9f470095 | 269 | * @index: index of the mapping that needs to be updated |
f67f366c | 270 | * @new_keycode: the desired keycode |
9f470095 | 271 | * |
d8b4b582 | 272 | * This routine is used to update scancode->keycode mapping at given |
9f470095 | 273 | * position. |
f67f366c MCC |
274 | * |
275 | * return: previous keycode assigned to the mapping | |
276 | * | |
9f470095 | 277 | */ |
d8b4b582 | 278 | static unsigned int ir_update_mapping(struct rc_dev *dev, |
b088ba65 | 279 | struct rc_map *rc_map, |
9f470095 DT |
280 | unsigned int index, |
281 | unsigned int new_keycode) | |
282 | { | |
b088ba65 | 283 | int old_keycode = rc_map->scan[index].keycode; |
9f470095 DT |
284 | int i; |
285 | ||
286 | /* Did the user wish to remove the mapping? */ | |
287 | if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) { | |
288 | IR_dprintk(1, "#%d: Deleting scan 0x%04x\n", | |
b088ba65 MCC |
289 | index, rc_map->scan[index].scancode); |
290 | rc_map->len--; | |
291 | memmove(&rc_map->scan[index], &rc_map->scan[index+ 1], | |
2f4f58d6 | 292 | (rc_map->len - index) * sizeof(struct rc_map_table)); |
9f470095 DT |
293 | } else { |
294 | IR_dprintk(1, "#%d: %s scan 0x%04x with key 0x%04x\n", | |
295 | index, | |
296 | old_keycode == KEY_RESERVED ? "New" : "Replacing", | |
b088ba65 MCC |
297 | rc_map->scan[index].scancode, new_keycode); |
298 | rc_map->scan[index].keycode = new_keycode; | |
d8b4b582 | 299 | __set_bit(new_keycode, dev->input_dev->keybit); |
9f470095 DT |
300 | } |
301 | ||
302 | if (old_keycode != KEY_RESERVED) { | |
303 | /* A previous mapping was updated... */ | |
d8b4b582 | 304 | __clear_bit(old_keycode, dev->input_dev->keybit); |
9f470095 | 305 | /* ... but another scancode might use the same keycode */ |
b088ba65 MCC |
306 | for (i = 0; i < rc_map->len; i++) { |
307 | if (rc_map->scan[i].keycode == old_keycode) { | |
d8b4b582 | 308 | __set_bit(old_keycode, dev->input_dev->keybit); |
9f470095 DT |
309 | break; |
310 | } | |
311 | } | |
312 | ||
313 | /* Possibly shrink the keytable, failure is not a problem */ | |
b088ba65 | 314 | ir_resize_table(rc_map, GFP_ATOMIC); |
9f470095 DT |
315 | } |
316 | ||
317 | return old_keycode; | |
318 | } | |
319 | ||
320 | /** | |
4c7b355d | 321 | * ir_establish_scancode() - set a keycode in the scancode->keycode table |
d8b4b582 | 322 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 323 | * @rc_map: scancode table to be searched |
9f470095 DT |
324 | * @scancode: the desired scancode |
325 | * @resize: controls whether we allowed to resize the table to | |
25985edc | 326 | * accommodate not yet present scancodes |
f6fc5049 | 327 | * |
b088ba65 | 328 | * This routine is used to locate given scancode in rc_map. |
9f470095 DT |
329 | * If scancode is not yet present the routine will allocate a new slot |
330 | * for it. | |
f67f366c MCC |
331 | * |
332 | * return: index of the mapping containing scancode in question | |
333 | * or -1U in case of failure. | |
f6fc5049 | 334 | */ |
d8b4b582 | 335 | static unsigned int ir_establish_scancode(struct rc_dev *dev, |
b088ba65 | 336 | struct rc_map *rc_map, |
9f470095 DT |
337 | unsigned int scancode, |
338 | bool resize) | |
f6fc5049 | 339 | { |
b3074c0a | 340 | unsigned int i; |
9dfe4e83 MCC |
341 | |
342 | /* | |
343 | * Unfortunately, some hardware-based IR decoders don't provide | |
344 | * all bits for the complete IR code. In general, they provide only | |
345 | * the command part of the IR code. Yet, as it is possible to replace | |
346 | * the provided IR with another one, it is needed to allow loading | |
d8b4b582 DH |
347 | * IR tables from other remotes. So, we support specifying a mask to |
348 | * indicate the valid bits of the scancodes. | |
9dfe4e83 | 349 | */ |
9d2f1d3c DH |
350 | if (dev->scancode_mask) |
351 | scancode &= dev->scancode_mask; | |
b3074c0a DH |
352 | |
353 | /* First check if we already have a mapping for this ir command */ | |
b088ba65 MCC |
354 | for (i = 0; i < rc_map->len; i++) { |
355 | if (rc_map->scan[i].scancode == scancode) | |
9f470095 DT |
356 | return i; |
357 | ||
b3074c0a | 358 | /* Keytable is sorted from lowest to highest scancode */ |
b088ba65 | 359 | if (rc_map->scan[i].scancode >= scancode) |
b3074c0a | 360 | break; |
b3074c0a | 361 | } |
f6fc5049 | 362 | |
9f470095 | 363 | /* No previous mapping found, we might need to grow the table */ |
b088ba65 MCC |
364 | if (rc_map->size == rc_map->len) { |
365 | if (!resize || ir_resize_table(rc_map, GFP_ATOMIC)) | |
9f470095 DT |
366 | return -1U; |
367 | } | |
35438946 | 368 | |
9f470095 | 369 | /* i is the proper index to insert our new keycode */ |
b088ba65 MCC |
370 | if (i < rc_map->len) |
371 | memmove(&rc_map->scan[i + 1], &rc_map->scan[i], | |
2f4f58d6 | 372 | (rc_map->len - i) * sizeof(struct rc_map_table)); |
b088ba65 MCC |
373 | rc_map->scan[i].scancode = scancode; |
374 | rc_map->scan[i].keycode = KEY_RESERVED; | |
375 | rc_map->len++; | |
f6fc5049 | 376 | |
9f470095 | 377 | return i; |
f6fc5049 MCC |
378 | } |
379 | ||
ef53a115 | 380 | /** |
b3074c0a | 381 | * ir_setkeycode() - set a keycode in the scancode->keycode table |
d8b4b582 | 382 | * @idev: the struct input_dev device descriptor |
f67f366c MCC |
383 | * @ke: Input keymap entry |
384 | * @old_keycode: result | |
ef53a115 | 385 | * |
b3074c0a | 386 | * This routine is used to handle evdev EVIOCSKEY ioctl. |
f67f366c MCC |
387 | * |
388 | * return: -EINVAL if the keycode could not be inserted, otherwise zero. | |
ef53a115 | 389 | */ |
d8b4b582 | 390 | static int ir_setkeycode(struct input_dev *idev, |
9f470095 DT |
391 | const struct input_keymap_entry *ke, |
392 | unsigned int *old_keycode) | |
ef53a115 | 393 | { |
d8b4b582 | 394 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 395 | struct rc_map *rc_map = &rdev->rc_map; |
9f470095 DT |
396 | unsigned int index; |
397 | unsigned int scancode; | |
dea8a39f | 398 | int retval = 0; |
9f470095 | 399 | unsigned long flags; |
ef53a115 | 400 | |
b088ba65 | 401 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
402 | |
403 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
404 | index = ke->index; | |
b088ba65 | 405 | if (index >= rc_map->len) { |
9f470095 DT |
406 | retval = -EINVAL; |
407 | goto out; | |
408 | } | |
409 | } else { | |
410 | retval = input_scancode_to_scalar(ke, &scancode); | |
411 | if (retval) | |
412 | goto out; | |
413 | ||
b088ba65 MCC |
414 | index = ir_establish_scancode(rdev, rc_map, scancode, true); |
415 | if (index >= rc_map->len) { | |
9f470095 DT |
416 | retval = -ENOMEM; |
417 | goto out; | |
418 | } | |
419 | } | |
420 | ||
b088ba65 | 421 | *old_keycode = ir_update_mapping(rdev, rc_map, index, ke->keycode); |
9f470095 DT |
422 | |
423 | out: | |
b088ba65 | 424 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 425 | return retval; |
e97f4677 MCC |
426 | } |
427 | ||
428 | /** | |
b3074c0a | 429 | * ir_setkeytable() - sets several entries in the scancode->keycode table |
d8b4b582 | 430 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 431 | * @from: the struct rc_map to copy entries from |
e97f4677 | 432 | * |
b3074c0a | 433 | * This routine is used to handle table initialization. |
f67f366c MCC |
434 | * |
435 | * return: -ENOMEM if all keycodes could not be inserted, otherwise zero. | |
e97f4677 | 436 | */ |
d8b4b582 | 437 | static int ir_setkeytable(struct rc_dev *dev, |
b088ba65 | 438 | const struct rc_map *from) |
e97f4677 | 439 | { |
b088ba65 | 440 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
441 | unsigned int i, index; |
442 | int rc; | |
443 | ||
b088ba65 | 444 | rc = ir_create_table(rc_map, from->name, |
6d741bfe | 445 | from->rc_proto, from->size); |
9f470095 DT |
446 | if (rc) |
447 | return rc; | |
448 | ||
b3074c0a | 449 | for (i = 0; i < from->size; i++) { |
b088ba65 | 450 | index = ir_establish_scancode(dev, rc_map, |
9f470095 | 451 | from->scan[i].scancode, false); |
b088ba65 | 452 | if (index >= rc_map->len) { |
9f470095 | 453 | rc = -ENOMEM; |
b3074c0a | 454 | break; |
9f470095 DT |
455 | } |
456 | ||
b088ba65 | 457 | ir_update_mapping(dev, rc_map, index, |
9f470095 | 458 | from->scan[i].keycode); |
e97f4677 | 459 | } |
9f470095 DT |
460 | |
461 | if (rc) | |
b088ba65 | 462 | ir_free_table(rc_map); |
9f470095 | 463 | |
b3074c0a | 464 | return rc; |
ef53a115 MCC |
465 | } |
466 | ||
8ca01d4f TM |
467 | static int rc_map_cmp(const void *key, const void *elt) |
468 | { | |
469 | const unsigned int *scancode = key; | |
470 | const struct rc_map_table *e = elt; | |
471 | ||
472 | if (*scancode < e->scancode) | |
473 | return -1; | |
474 | else if (*scancode > e->scancode) | |
475 | return 1; | |
476 | return 0; | |
477 | } | |
478 | ||
9f470095 DT |
479 | /** |
480 | * ir_lookup_by_scancode() - locate mapping by scancode | |
b088ba65 | 481 | * @rc_map: the struct rc_map to search |
9f470095 | 482 | * @scancode: scancode to look for in the table |
9f470095 DT |
483 | * |
484 | * This routine performs binary search in RC keykeymap table for | |
485 | * given scancode. | |
f67f366c MCC |
486 | * |
487 | * return: index in the table, -1U if not found | |
9f470095 | 488 | */ |
b088ba65 | 489 | static unsigned int ir_lookup_by_scancode(const struct rc_map *rc_map, |
9f470095 DT |
490 | unsigned int scancode) |
491 | { | |
8ca01d4f TM |
492 | struct rc_map_table *res; |
493 | ||
494 | res = bsearch(&scancode, rc_map->scan, rc_map->len, | |
495 | sizeof(struct rc_map_table), rc_map_cmp); | |
496 | if (!res) | |
497 | return -1U; | |
498 | else | |
499 | return res - rc_map->scan; | |
9f470095 DT |
500 | } |
501 | ||
ef53a115 | 502 | /** |
b3074c0a | 503 | * ir_getkeycode() - get a keycode from the scancode->keycode table |
d8b4b582 | 504 | * @idev: the struct input_dev device descriptor |
f67f366c | 505 | * @ke: Input keymap entry |
ef53a115 | 506 | * |
b3074c0a | 507 | * This routine is used to handle evdev EVIOCGKEY ioctl. |
f67f366c MCC |
508 | * |
509 | * return: always returns zero. | |
ef53a115 | 510 | */ |
d8b4b582 | 511 | static int ir_getkeycode(struct input_dev *idev, |
9f470095 | 512 | struct input_keymap_entry *ke) |
ef53a115 | 513 | { |
d8b4b582 | 514 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 515 | struct rc_map *rc_map = &rdev->rc_map; |
2f4f58d6 | 516 | struct rc_map_table *entry; |
9f470095 DT |
517 | unsigned long flags; |
518 | unsigned int index; | |
519 | unsigned int scancode; | |
520 | int retval; | |
ef53a115 | 521 | |
b088ba65 | 522 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
523 | |
524 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
525 | index = ke->index; | |
526 | } else { | |
527 | retval = input_scancode_to_scalar(ke, &scancode); | |
528 | if (retval) | |
529 | goto out; | |
530 | ||
b088ba65 | 531 | index = ir_lookup_by_scancode(rc_map, scancode); |
9f470095 DT |
532 | } |
533 | ||
54e74b87 DT |
534 | if (index < rc_map->len) { |
535 | entry = &rc_map->scan[index]; | |
536 | ||
537 | ke->index = index; | |
538 | ke->keycode = entry->keycode; | |
539 | ke->len = sizeof(entry->scancode); | |
540 | memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode)); | |
541 | ||
542 | } else if (!(ke->flags & INPUT_KEYMAP_BY_INDEX)) { | |
543 | /* | |
544 | * We do not really know the valid range of scancodes | |
545 | * so let's respond with KEY_RESERVED to anything we | |
546 | * do not have mapping for [yet]. | |
547 | */ | |
548 | ke->index = index; | |
549 | ke->keycode = KEY_RESERVED; | |
550 | } else { | |
9f470095 DT |
551 | retval = -EINVAL; |
552 | goto out; | |
e97f4677 MCC |
553 | } |
554 | ||
47c5ba53 DT |
555 | retval = 0; |
556 | ||
9f470095 | 557 | out: |
b088ba65 | 558 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 559 | return retval; |
ef53a115 MCC |
560 | } |
561 | ||
562 | /** | |
ca86674b | 563 | * rc_g_keycode_from_table() - gets the keycode that corresponds to a scancode |
d8b4b582 DH |
564 | * @dev: the struct rc_dev descriptor of the device |
565 | * @scancode: the scancode to look for | |
ef53a115 | 566 | * |
d8b4b582 DH |
567 | * This routine is used by drivers which need to convert a scancode to a |
568 | * keycode. Normally it should not be used since drivers should have no | |
569 | * interest in keycodes. | |
f67f366c MCC |
570 | * |
571 | * return: the corresponding keycode, or KEY_RESERVED | |
ef53a115 | 572 | */ |
ca86674b | 573 | u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode) |
ef53a115 | 574 | { |
b088ba65 | 575 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
576 | unsigned int keycode; |
577 | unsigned int index; | |
578 | unsigned long flags; | |
579 | ||
b088ba65 | 580 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 | 581 | |
b088ba65 MCC |
582 | index = ir_lookup_by_scancode(rc_map, scancode); |
583 | keycode = index < rc_map->len ? | |
584 | rc_map->scan[index].keycode : KEY_RESERVED; | |
9f470095 | 585 | |
b088ba65 | 586 | spin_unlock_irqrestore(&rc_map->lock, flags); |
ef53a115 | 587 | |
35438946 MCC |
588 | if (keycode != KEY_RESERVED) |
589 | IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n", | |
518f4b26 | 590 | dev->device_name, scancode, keycode); |
9f470095 | 591 | |
b3074c0a | 592 | return keycode; |
ef53a115 | 593 | } |
ca86674b | 594 | EXPORT_SYMBOL_GPL(rc_g_keycode_from_table); |
ef53a115 | 595 | |
6660de56 | 596 | /** |
62c65031 | 597 | * ir_do_keyup() - internal function to signal the release of a keypress |
d8b4b582 | 598 | * @dev: the struct rc_dev descriptor of the device |
98c32bcd | 599 | * @sync: whether or not to call input_sync |
6660de56 | 600 | * |
62c65031 DH |
601 | * This function is used internally to release a keypress, it must be |
602 | * called with keylock held. | |
a374fef4 | 603 | */ |
98c32bcd | 604 | static void ir_do_keyup(struct rc_dev *dev, bool sync) |
a374fef4 | 605 | { |
d8b4b582 | 606 | if (!dev->keypressed) |
a374fef4 DH |
607 | return; |
608 | ||
d8b4b582 DH |
609 | IR_dprintk(1, "keyup key 0x%04x\n", dev->last_keycode); |
610 | input_report_key(dev->input_dev, dev->last_keycode, 0); | |
153a60bb | 611 | led_trigger_event(led_feedback, LED_OFF); |
98c32bcd JW |
612 | if (sync) |
613 | input_sync(dev->input_dev); | |
d8b4b582 | 614 | dev->keypressed = false; |
a374fef4 | 615 | } |
62c65031 DH |
616 | |
617 | /** | |
ca86674b | 618 | * rc_keyup() - signals the release of a keypress |
d8b4b582 | 619 | * @dev: the struct rc_dev descriptor of the device |
62c65031 DH |
620 | * |
621 | * This routine is used to signal that a key has been released on the | |
622 | * remote control. | |
623 | */ | |
ca86674b | 624 | void rc_keyup(struct rc_dev *dev) |
62c65031 DH |
625 | { |
626 | unsigned long flags; | |
62c65031 | 627 | |
d8b4b582 | 628 | spin_lock_irqsave(&dev->keylock, flags); |
98c32bcd | 629 | ir_do_keyup(dev, true); |
d8b4b582 | 630 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 631 | } |
ca86674b | 632 | EXPORT_SYMBOL_GPL(rc_keyup); |
a374fef4 DH |
633 | |
634 | /** | |
635 | * ir_timer_keyup() - generates a keyup event after a timeout | |
f67f366c MCC |
636 | * |
637 | * @t: a pointer to the struct timer_list | |
a374fef4 DH |
638 | * |
639 | * This routine will generate a keyup event some time after a keydown event | |
640 | * is generated when no further activity has been detected. | |
6660de56 | 641 | */ |
b17ec78a | 642 | static void ir_timer_keyup(struct timer_list *t) |
6660de56 | 643 | { |
b17ec78a | 644 | struct rc_dev *dev = from_timer(dev, t, timer_keyup); |
a374fef4 DH |
645 | unsigned long flags; |
646 | ||
647 | /* | |
648 | * ir->keyup_jiffies is used to prevent a race condition if a | |
649 | * hardware interrupt occurs at this point and the keyup timer | |
650 | * event is moved further into the future as a result. | |
651 | * | |
652 | * The timer will then be reactivated and this function called | |
653 | * again in the future. We need to exit gracefully in that case | |
654 | * to allow the input subsystem to do its auto-repeat magic or | |
655 | * a keyup event might follow immediately after the keydown. | |
656 | */ | |
d8b4b582 DH |
657 | spin_lock_irqsave(&dev->keylock, flags); |
658 | if (time_is_before_eq_jiffies(dev->keyup_jiffies)) | |
98c32bcd | 659 | ir_do_keyup(dev, true); |
d8b4b582 | 660 | spin_unlock_irqrestore(&dev->keylock, flags); |
a374fef4 DH |
661 | } |
662 | ||
663 | /** | |
ca86674b | 664 | * rc_repeat() - signals that a key is still pressed |
d8b4b582 | 665 | * @dev: the struct rc_dev descriptor of the device |
a374fef4 DH |
666 | * |
667 | * This routine is used by IR decoders when a repeat message which does | |
668 | * not include the necessary bits to reproduce the scancode has been | |
669 | * received. | |
670 | */ | |
ca86674b | 671 | void rc_repeat(struct rc_dev *dev) |
a374fef4 DH |
672 | { |
673 | unsigned long flags; | |
d57ea877 | 674 | unsigned int timeout = protocols[dev->last_protocol].repeat_period; |
6660de56 | 675 | |
d8b4b582 | 676 | spin_lock_irqsave(&dev->keylock, flags); |
a374fef4 | 677 | |
d8b4b582 | 678 | if (!dev->keypressed) |
a374fef4 | 679 | goto out; |
6660de56 | 680 | |
265a2988 DH |
681 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, dev->last_scancode); |
682 | input_sync(dev->input_dev); | |
683 | ||
d57ea877 | 684 | dev->keyup_jiffies = jiffies + msecs_to_jiffies(timeout); |
d8b4b582 | 685 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); |
a374fef4 DH |
686 | |
687 | out: | |
d8b4b582 | 688 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 689 | } |
ca86674b | 690 | EXPORT_SYMBOL_GPL(rc_repeat); |
6660de56 MCC |
691 | |
692 | /** | |
62c65031 | 693 | * ir_do_keydown() - internal function to process a keypress |
d8b4b582 | 694 | * @dev: the struct rc_dev descriptor of the device |
120703f9 | 695 | * @protocol: the protocol of the keypress |
62c65031 DH |
696 | * @scancode: the scancode of the keypress |
697 | * @keycode: the keycode of the keypress | |
698 | * @toggle: the toggle value of the keypress | |
6660de56 | 699 | * |
62c65031 DH |
700 | * This function is used internally to register a keypress, it must be |
701 | * called with keylock held. | |
6660de56 | 702 | */ |
6d741bfe | 703 | static void ir_do_keydown(struct rc_dev *dev, enum rc_proto protocol, |
120703f9 | 704 | u32 scancode, u32 keycode, u8 toggle) |
6660de56 | 705 | { |
99b0f3c9 | 706 | bool new_event = (!dev->keypressed || |
120703f9 | 707 | dev->last_protocol != protocol || |
99b0f3c9 | 708 | dev->last_scancode != scancode || |
120703f9 | 709 | dev->last_toggle != toggle); |
6660de56 | 710 | |
98c32bcd JW |
711 | if (new_event && dev->keypressed) |
712 | ir_do_keyup(dev, false); | |
6660de56 | 713 | |
98c32bcd | 714 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode); |
a374fef4 | 715 | |
98c32bcd JW |
716 | if (new_event && keycode != KEY_RESERVED) { |
717 | /* Register a keypress */ | |
718 | dev->keypressed = true; | |
120703f9 | 719 | dev->last_protocol = protocol; |
98c32bcd JW |
720 | dev->last_scancode = scancode; |
721 | dev->last_toggle = toggle; | |
722 | dev->last_keycode = keycode; | |
723 | ||
25ec587c | 724 | IR_dprintk(1, "%s: key down event, key 0x%04x, protocol 0x%04x, scancode 0x%08x\n", |
518f4b26 | 725 | dev->device_name, keycode, protocol, scancode); |
98c32bcd | 726 | input_report_key(dev->input_dev, keycode, 1); |
70a2f912 JH |
727 | |
728 | led_trigger_event(led_feedback, LED_FULL); | |
98c32bcd | 729 | } |
ed4d3876 | 730 | |
d8b4b582 | 731 | input_sync(dev->input_dev); |
62c65031 | 732 | } |
6660de56 | 733 | |
62c65031 | 734 | /** |
ca86674b | 735 | * rc_keydown() - generates input event for a key press |
d8b4b582 | 736 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
737 | * @protocol: the protocol for the keypress |
738 | * @scancode: the scancode for the keypress | |
62c65031 DH |
739 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
740 | * support toggle values, this should be set to zero) | |
741 | * | |
d8b4b582 DH |
742 | * This routine is used to signal that a key has been pressed on the |
743 | * remote control. | |
62c65031 | 744 | */ |
6d741bfe SY |
745 | void rc_keydown(struct rc_dev *dev, enum rc_proto protocol, u32 scancode, |
746 | u8 toggle) | |
62c65031 DH |
747 | { |
748 | unsigned long flags; | |
ca86674b | 749 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 750 | |
d8b4b582 | 751 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 752 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
62c65031 | 753 | |
d8b4b582 | 754 | if (dev->keypressed) { |
d57ea877 SY |
755 | dev->keyup_jiffies = jiffies + |
756 | msecs_to_jiffies(protocols[protocol].repeat_period); | |
d8b4b582 | 757 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); |
62c65031 | 758 | } |
d8b4b582 | 759 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 760 | } |
ca86674b | 761 | EXPORT_SYMBOL_GPL(rc_keydown); |
6660de56 | 762 | |
62c65031 | 763 | /** |
ca86674b | 764 | * rc_keydown_notimeout() - generates input event for a key press without |
62c65031 | 765 | * an automatic keyup event at a later time |
d8b4b582 | 766 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
767 | * @protocol: the protocol for the keypress |
768 | * @scancode: the scancode for the keypress | |
62c65031 DH |
769 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
770 | * support toggle values, this should be set to zero) | |
771 | * | |
d8b4b582 | 772 | * This routine is used to signal that a key has been pressed on the |
ca86674b | 773 | * remote control. The driver must manually call rc_keyup() at a later stage. |
62c65031 | 774 | */ |
6d741bfe | 775 | void rc_keydown_notimeout(struct rc_dev *dev, enum rc_proto protocol, |
120703f9 | 776 | u32 scancode, u8 toggle) |
62c65031 DH |
777 | { |
778 | unsigned long flags; | |
ca86674b | 779 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 780 | |
d8b4b582 | 781 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 782 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
d8b4b582 | 783 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 784 | } |
ca86674b | 785 | EXPORT_SYMBOL_GPL(rc_keydown_notimeout); |
62c65031 | 786 | |
b590c0bf SY |
787 | /** |
788 | * rc_validate_filter() - checks that the scancode and mask are valid and | |
789 | * provides sensible defaults | |
f423ccc1 | 790 | * @dev: the struct rc_dev descriptor of the device |
b590c0bf | 791 | * @filter: the scancode and mask |
f67f366c MCC |
792 | * |
793 | * return: 0 or -EINVAL if the filter is not valid | |
b590c0bf | 794 | */ |
f423ccc1 | 795 | static int rc_validate_filter(struct rc_dev *dev, |
b590c0bf SY |
796 | struct rc_scancode_filter *filter) |
797 | { | |
d57ea877 | 798 | u32 mask, s = filter->data; |
6d741bfe | 799 | enum rc_proto protocol = dev->wakeup_protocol; |
b590c0bf | 800 | |
d57ea877 | 801 | if (protocol >= ARRAY_SIZE(protocols)) |
2168b416 SY |
802 | return -EINVAL; |
803 | ||
d57ea877 SY |
804 | mask = protocols[protocol].scancode_bits; |
805 | ||
b590c0bf | 806 | switch (protocol) { |
6d741bfe | 807 | case RC_PROTO_NECX: |
b590c0bf SY |
808 | if ((((s >> 16) ^ ~(s >> 8)) & 0xff) == 0) |
809 | return -EINVAL; | |
810 | break; | |
6d741bfe | 811 | case RC_PROTO_NEC32: |
b590c0bf SY |
812 | if ((((s >> 24) ^ ~(s >> 16)) & 0xff) == 0) |
813 | return -EINVAL; | |
814 | break; | |
6d741bfe | 815 | case RC_PROTO_RC6_MCE: |
b590c0bf SY |
816 | if ((s & 0xffff0000) != 0x800f0000) |
817 | return -EINVAL; | |
818 | break; | |
6d741bfe | 819 | case RC_PROTO_RC6_6A_32: |
b590c0bf SY |
820 | if ((s & 0xffff0000) == 0x800f0000) |
821 | return -EINVAL; | |
822 | break; | |
823 | default: | |
824 | break; | |
825 | } | |
826 | ||
d57ea877 SY |
827 | filter->data &= mask; |
828 | filter->mask &= mask; | |
b590c0bf | 829 | |
f423ccc1 JH |
830 | /* |
831 | * If we have to raw encode the IR for wakeup, we cannot have a mask | |
832 | */ | |
d57ea877 | 833 | if (dev->encode_wakeup && filter->mask != 0 && filter->mask != mask) |
f423ccc1 JH |
834 | return -EINVAL; |
835 | ||
b590c0bf SY |
836 | return 0; |
837 | } | |
838 | ||
8b2ff320 SK |
839 | int rc_open(struct rc_dev *rdev) |
840 | { | |
841 | int rval = 0; | |
842 | ||
843 | if (!rdev) | |
844 | return -EINVAL; | |
845 | ||
846 | mutex_lock(&rdev->lock); | |
c73bbaa4 | 847 | |
f02dcdd1 | 848 | if (!rdev->users++ && rdev->open != NULL) |
8b2ff320 SK |
849 | rval = rdev->open(rdev); |
850 | ||
851 | if (rval) | |
852 | rdev->users--; | |
853 | ||
854 | mutex_unlock(&rdev->lock); | |
855 | ||
856 | return rval; | |
857 | } | |
858 | EXPORT_SYMBOL_GPL(rc_open); | |
859 | ||
d8b4b582 | 860 | static int ir_open(struct input_dev *idev) |
ef53a115 | 861 | { |
d8b4b582 | 862 | struct rc_dev *rdev = input_get_drvdata(idev); |
75543cce | 863 | |
8b2ff320 SK |
864 | return rc_open(rdev); |
865 | } | |
866 | ||
867 | void rc_close(struct rc_dev *rdev) | |
868 | { | |
869 | if (rdev) { | |
870 | mutex_lock(&rdev->lock); | |
871 | ||
81b7d14e | 872 | if (!--rdev->users && rdev->close != NULL) |
8b2ff320 SK |
873 | rdev->close(rdev); |
874 | ||
875 | mutex_unlock(&rdev->lock); | |
876 | } | |
ef53a115 | 877 | } |
8b2ff320 | 878 | EXPORT_SYMBOL_GPL(rc_close); |
d4b778d3 | 879 | |
d8b4b582 | 880 | static void ir_close(struct input_dev *idev) |
f6fc5049 | 881 | { |
d8b4b582 | 882 | struct rc_dev *rdev = input_get_drvdata(idev); |
8b2ff320 | 883 | rc_close(rdev); |
f6fc5049 | 884 | } |
f6fc5049 | 885 | |
bc2a6c57 | 886 | /* class for /sys/class/rc */ |
40fc5325 | 887 | static char *rc_devnode(struct device *dev, umode_t *mode) |
bc2a6c57 MCC |
888 | { |
889 | return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); | |
890 | } | |
891 | ||
40fc5325 | 892 | static struct class rc_class = { |
bc2a6c57 | 893 | .name = "rc", |
40fc5325 | 894 | .devnode = rc_devnode, |
bc2a6c57 MCC |
895 | }; |
896 | ||
c003ab1b DH |
897 | /* |
898 | * These are the protocol textual descriptions that are | |
899 | * used by the sysfs protocols file. Note that the order | |
900 | * of the entries is relevant. | |
901 | */ | |
53df8777 | 902 | static const struct { |
bc2a6c57 | 903 | u64 type; |
53df8777 | 904 | const char *name; |
9f0bf366 | 905 | const char *module_name; |
bc2a6c57 | 906 | } proto_names[] = { |
6d741bfe SY |
907 | { RC_PROTO_BIT_NONE, "none", NULL }, |
908 | { RC_PROTO_BIT_OTHER, "other", NULL }, | |
909 | { RC_PROTO_BIT_UNKNOWN, "unknown", NULL }, | |
910 | { RC_PROTO_BIT_RC5 | | |
911 | RC_PROTO_BIT_RC5X_20, "rc-5", "ir-rc5-decoder" }, | |
912 | { RC_PROTO_BIT_NEC | | |
913 | RC_PROTO_BIT_NECX | | |
914 | RC_PROTO_BIT_NEC32, "nec", "ir-nec-decoder" }, | |
915 | { RC_PROTO_BIT_RC6_0 | | |
916 | RC_PROTO_BIT_RC6_6A_20 | | |
917 | RC_PROTO_BIT_RC6_6A_24 | | |
918 | RC_PROTO_BIT_RC6_6A_32 | | |
919 | RC_PROTO_BIT_RC6_MCE, "rc-6", "ir-rc6-decoder" }, | |
920 | { RC_PROTO_BIT_JVC, "jvc", "ir-jvc-decoder" }, | |
921 | { RC_PROTO_BIT_SONY12 | | |
922 | RC_PROTO_BIT_SONY15 | | |
923 | RC_PROTO_BIT_SONY20, "sony", "ir-sony-decoder" }, | |
924 | { RC_PROTO_BIT_RC5_SZ, "rc-5-sz", "ir-rc5-decoder" }, | |
925 | { RC_PROTO_BIT_SANYO, "sanyo", "ir-sanyo-decoder" }, | |
926 | { RC_PROTO_BIT_SHARP, "sharp", "ir-sharp-decoder" }, | |
927 | { RC_PROTO_BIT_MCIR2_KBD | | |
928 | RC_PROTO_BIT_MCIR2_MSE, "mce_kbd", "ir-mce_kbd-decoder" }, | |
929 | { RC_PROTO_BIT_XMP, "xmp", "ir-xmp-decoder" }, | |
930 | { RC_PROTO_BIT_CEC, "cec", NULL }, | |
bc2a6c57 MCC |
931 | }; |
932 | ||
bc2a6c57 | 933 | /** |
ab88c66d JH |
934 | * struct rc_filter_attribute - Device attribute relating to a filter type. |
935 | * @attr: Device attribute. | |
936 | * @type: Filter type. | |
937 | * @mask: false for filter value, true for filter mask. | |
938 | */ | |
939 | struct rc_filter_attribute { | |
940 | struct device_attribute attr; | |
941 | enum rc_filter_type type; | |
942 | bool mask; | |
943 | }; | |
944 | #define to_rc_filter_attr(a) container_of(a, struct rc_filter_attribute, attr) | |
945 | ||
ab88c66d JH |
946 | #define RC_FILTER_ATTR(_name, _mode, _show, _store, _type, _mask) \ |
947 | struct rc_filter_attribute dev_attr_##_name = { \ | |
948 | .attr = __ATTR(_name, _mode, _show, _store), \ | |
949 | .type = (_type), \ | |
950 | .mask = (_mask), \ | |
951 | } | |
952 | ||
dd6ff6a0 DH |
953 | static bool lirc_is_present(void) |
954 | { | |
955 | #if defined(CONFIG_LIRC_MODULE) | |
956 | struct module *lirc; | |
957 | ||
958 | mutex_lock(&module_mutex); | |
959 | lirc = find_module("lirc_dev"); | |
960 | mutex_unlock(&module_mutex); | |
961 | ||
962 | return lirc ? true : false; | |
963 | #elif defined(CONFIG_LIRC) | |
964 | return true; | |
965 | #else | |
966 | return false; | |
967 | #endif | |
968 | } | |
969 | ||
ab88c66d | 970 | /** |
0751d33c | 971 | * show_protocols() - shows the current IR protocol(s) |
d8b4b582 | 972 | * @device: the device descriptor |
da6e162d | 973 | * @mattr: the device attribute struct |
bc2a6c57 MCC |
974 | * @buf: a pointer to the output buffer |
975 | * | |
976 | * This routine is a callback routine for input read the IR protocol type(s). | |
0751d33c | 977 | * it is trigged by reading /sys/class/rc/rc?/protocols. |
bc2a6c57 MCC |
978 | * It returns the protocol names of supported protocols. |
979 | * Enabled protocols are printed in brackets. | |
08aeb7c9 | 980 | * |
18726a34 DH |
981 | * dev->lock is taken to guard against races between |
982 | * store_protocols and show_protocols. | |
bc2a6c57 | 983 | */ |
d8b4b582 | 984 | static ssize_t show_protocols(struct device *device, |
bc2a6c57 MCC |
985 | struct device_attribute *mattr, char *buf) |
986 | { | |
d8b4b582 | 987 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 MCC |
988 | u64 allowed, enabled; |
989 | char *tmp = buf; | |
990 | int i; | |
991 | ||
08aeb7c9 JW |
992 | mutex_lock(&dev->lock); |
993 | ||
0751d33c SY |
994 | enabled = dev->enabled_protocols; |
995 | allowed = dev->allowed_protocols; | |
996 | if (dev->raw && !allowed) | |
997 | allowed = ir_raw_get_allowed_protocols(); | |
bc2a6c57 | 998 | |
da6e162d DH |
999 | mutex_unlock(&dev->lock); |
1000 | ||
1001 | IR_dprintk(1, "%s: allowed - 0x%llx, enabled - 0x%llx\n", | |
1002 | __func__, (long long)allowed, (long long)enabled); | |
bc2a6c57 MCC |
1003 | |
1004 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
1005 | if (allowed & enabled & proto_names[i].type) | |
1006 | tmp += sprintf(tmp, "[%s] ", proto_names[i].name); | |
1007 | else if (allowed & proto_names[i].type) | |
1008 | tmp += sprintf(tmp, "%s ", proto_names[i].name); | |
c003ab1b DH |
1009 | |
1010 | if (allowed & proto_names[i].type) | |
1011 | allowed &= ~proto_names[i].type; | |
bc2a6c57 MCC |
1012 | } |
1013 | ||
dd6ff6a0 | 1014 | if (dev->driver_type == RC_DRIVER_IR_RAW && lirc_is_present()) |
275ddb40 DH |
1015 | tmp += sprintf(tmp, "[lirc] "); |
1016 | ||
bc2a6c57 MCC |
1017 | if (tmp != buf) |
1018 | tmp--; | |
1019 | *tmp = '\n'; | |
08aeb7c9 | 1020 | |
bc2a6c57 MCC |
1021 | return tmp + 1 - buf; |
1022 | } | |
1023 | ||
1024 | /** | |
da6e162d DH |
1025 | * parse_protocol_change() - parses a protocol change request |
1026 | * @protocols: pointer to the bitmask of current protocols | |
1027 | * @buf: pointer to the buffer with a list of changes | |
bc2a6c57 | 1028 | * |
da6e162d DH |
1029 | * Writing "+proto" will add a protocol to the protocol mask. |
1030 | * Writing "-proto" will remove a protocol from protocol mask. | |
bc2a6c57 MCC |
1031 | * Writing "proto" will enable only "proto". |
1032 | * Writing "none" will disable all protocols. | |
da6e162d | 1033 | * Returns the number of changes performed or a negative error code. |
bc2a6c57 | 1034 | */ |
da6e162d | 1035 | static int parse_protocol_change(u64 *protocols, const char *buf) |
bc2a6c57 | 1036 | { |
bc2a6c57 | 1037 | const char *tmp; |
da6e162d DH |
1038 | unsigned count = 0; |
1039 | bool enable, disable; | |
bc2a6c57 | 1040 | u64 mask; |
da6e162d | 1041 | int i; |
bc2a6c57 | 1042 | |
da6e162d | 1043 | while ((tmp = strsep((char **)&buf, " \n")) != NULL) { |
bc2a6c57 MCC |
1044 | if (!*tmp) |
1045 | break; | |
1046 | ||
1047 | if (*tmp == '+') { | |
1048 | enable = true; | |
1049 | disable = false; | |
1050 | tmp++; | |
1051 | } else if (*tmp == '-') { | |
1052 | enable = false; | |
1053 | disable = true; | |
1054 | tmp++; | |
1055 | } else { | |
1056 | enable = false; | |
1057 | disable = false; | |
1058 | } | |
1059 | ||
c003ab1b DH |
1060 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { |
1061 | if (!strcasecmp(tmp, proto_names[i].name)) { | |
1062 | mask = proto_names[i].type; | |
1063 | break; | |
bc2a6c57 | 1064 | } |
bc2a6c57 MCC |
1065 | } |
1066 | ||
c003ab1b | 1067 | if (i == ARRAY_SIZE(proto_names)) { |
275ddb40 DH |
1068 | if (!strcasecmp(tmp, "lirc")) |
1069 | mask = 0; | |
1070 | else { | |
1071 | IR_dprintk(1, "Unknown protocol: '%s'\n", tmp); | |
1072 | return -EINVAL; | |
1073 | } | |
c003ab1b DH |
1074 | } |
1075 | ||
1076 | count++; | |
1077 | ||
bc2a6c57 | 1078 | if (enable) |
da6e162d | 1079 | *protocols |= mask; |
bc2a6c57 | 1080 | else if (disable) |
da6e162d | 1081 | *protocols &= ~mask; |
bc2a6c57 | 1082 | else |
da6e162d | 1083 | *protocols = mask; |
bc2a6c57 MCC |
1084 | } |
1085 | ||
1086 | if (!count) { | |
1087 | IR_dprintk(1, "Protocol not specified\n"); | |
da6e162d DH |
1088 | return -EINVAL; |
1089 | } | |
1090 | ||
1091 | return count; | |
1092 | } | |
1093 | ||
9f0bf366 | 1094 | static void ir_raw_load_modules(u64 *protocols) |
9f0bf366 HK |
1095 | { |
1096 | u64 available; | |
1097 | int i, ret; | |
1098 | ||
1099 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
6d741bfe SY |
1100 | if (proto_names[i].type == RC_PROTO_BIT_NONE || |
1101 | proto_names[i].type & (RC_PROTO_BIT_OTHER | | |
1102 | RC_PROTO_BIT_UNKNOWN)) | |
9f0bf366 HK |
1103 | continue; |
1104 | ||
1105 | available = ir_raw_get_allowed_protocols(); | |
1106 | if (!(*protocols & proto_names[i].type & ~available)) | |
1107 | continue; | |
1108 | ||
1109 | if (!proto_names[i].module_name) { | |
1110 | pr_err("Can't enable IR protocol %s\n", | |
1111 | proto_names[i].name); | |
1112 | *protocols &= ~proto_names[i].type; | |
1113 | continue; | |
1114 | } | |
1115 | ||
1116 | ret = request_module("%s", proto_names[i].module_name); | |
1117 | if (ret < 0) { | |
1118 | pr_err("Couldn't load IR protocol module %s\n", | |
1119 | proto_names[i].module_name); | |
1120 | *protocols &= ~proto_names[i].type; | |
1121 | continue; | |
1122 | } | |
1123 | msleep(20); | |
1124 | available = ir_raw_get_allowed_protocols(); | |
1125 | if (!(*protocols & proto_names[i].type & ~available)) | |
1126 | continue; | |
1127 | ||
8caebcdc | 1128 | pr_err("Loaded IR protocol module %s, but protocol %s still not available\n", |
9f0bf366 HK |
1129 | proto_names[i].module_name, |
1130 | proto_names[i].name); | |
1131 | *protocols &= ~proto_names[i].type; | |
1132 | } | |
1133 | } | |
1134 | ||
da6e162d DH |
1135 | /** |
1136 | * store_protocols() - changes the current/wakeup IR protocol(s) | |
1137 | * @device: the device descriptor | |
1138 | * @mattr: the device attribute struct | |
1139 | * @buf: a pointer to the input buffer | |
1140 | * @len: length of the input buffer | |
1141 | * | |
1142 | * This routine is for changing the IR protocol type. | |
1143 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]protocols. | |
1144 | * See parse_protocol_change() for the valid commands. | |
1145 | * Returns @len on success or a negative error code. | |
1146 | * | |
18726a34 DH |
1147 | * dev->lock is taken to guard against races between |
1148 | * store_protocols and show_protocols. | |
da6e162d DH |
1149 | */ |
1150 | static ssize_t store_protocols(struct device *device, | |
1151 | struct device_attribute *mattr, | |
1152 | const char *buf, size_t len) | |
1153 | { | |
1154 | struct rc_dev *dev = to_rc_dev(device); | |
da6e162d | 1155 | u64 *current_protocols; |
da6e162d | 1156 | struct rc_scancode_filter *filter; |
da6e162d DH |
1157 | u64 old_protocols, new_protocols; |
1158 | ssize_t rc; | |
1159 | ||
0751d33c SY |
1160 | IR_dprintk(1, "Normal protocol change requested\n"); |
1161 | current_protocols = &dev->enabled_protocols; | |
1162 | filter = &dev->scancode_filter; | |
da6e162d | 1163 | |
0751d33c | 1164 | if (!dev->change_protocol) { |
da6e162d DH |
1165 | IR_dprintk(1, "Protocol switching not supported\n"); |
1166 | return -EINVAL; | |
1167 | } | |
1168 | ||
1169 | mutex_lock(&dev->lock); | |
1170 | ||
1171 | old_protocols = *current_protocols; | |
1172 | new_protocols = old_protocols; | |
1173 | rc = parse_protocol_change(&new_protocols, buf); | |
1174 | if (rc < 0) | |
1175 | goto out; | |
1176 | ||
0751d33c | 1177 | rc = dev->change_protocol(dev, &new_protocols); |
da6e162d DH |
1178 | if (rc < 0) { |
1179 | IR_dprintk(1, "Error setting protocols to 0x%llx\n", | |
1180 | (long long)new_protocols); | |
08aeb7c9 | 1181 | goto out; |
bc2a6c57 MCC |
1182 | } |
1183 | ||
9f0bf366 HK |
1184 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1185 | ir_raw_load_modules(&new_protocols); | |
1186 | ||
983c5bd2 JH |
1187 | if (new_protocols != old_protocols) { |
1188 | *current_protocols = new_protocols; | |
1189 | IR_dprintk(1, "Protocols changed to 0x%llx\n", | |
1190 | (long long)new_protocols); | |
bc2a6c57 MCC |
1191 | } |
1192 | ||
6bea25af | 1193 | /* |
983c5bd2 JH |
1194 | * If a protocol change was attempted the filter may need updating, even |
1195 | * if the actual protocol mask hasn't changed (since the driver may have | |
1196 | * cleared the filter). | |
6bea25af JH |
1197 | * Try setting the same filter with the new protocol (if any). |
1198 | * Fall back to clearing the filter. | |
1199 | */ | |
0751d33c | 1200 | if (dev->s_filter && filter->mask) { |
da6e162d | 1201 | if (new_protocols) |
0751d33c | 1202 | rc = dev->s_filter(dev, filter); |
da6e162d DH |
1203 | else |
1204 | rc = -1; | |
6bea25af | 1205 | |
da6e162d DH |
1206 | if (rc < 0) { |
1207 | filter->data = 0; | |
1208 | filter->mask = 0; | |
0751d33c | 1209 | dev->s_filter(dev, filter); |
da6e162d | 1210 | } |
6bea25af JH |
1211 | } |
1212 | ||
da6e162d | 1213 | rc = len; |
08aeb7c9 JW |
1214 | |
1215 | out: | |
1216 | mutex_unlock(&dev->lock); | |
da6e162d | 1217 | return rc; |
bc2a6c57 MCC |
1218 | } |
1219 | ||
00942d1a JH |
1220 | /** |
1221 | * show_filter() - shows the current scancode filter value or mask | |
1222 | * @device: the device descriptor | |
1223 | * @attr: the device attribute struct | |
1224 | * @buf: a pointer to the output buffer | |
1225 | * | |
1226 | * This routine is a callback routine to read a scancode filter value or mask. | |
1227 | * It is trigged by reading /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1228 | * It prints the current scancode filter value or mask of the appropriate filter | |
1229 | * type in hexadecimal into @buf and returns the size of the buffer. | |
1230 | * | |
1231 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1232 | * compared against input scancodes and non-matching scancodes are discarded. | |
1233 | * | |
18726a34 | 1234 | * dev->lock is taken to guard against races between |
00942d1a JH |
1235 | * store_filter and show_filter. |
1236 | */ | |
1237 | static ssize_t show_filter(struct device *device, | |
1238 | struct device_attribute *attr, | |
1239 | char *buf) | |
1240 | { | |
1241 | struct rc_dev *dev = to_rc_dev(device); | |
1242 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1243 | struct rc_scancode_filter *filter; |
00942d1a JH |
1244 | u32 val; |
1245 | ||
c73bbaa4 | 1246 | mutex_lock(&dev->lock); |
c73bbaa4 | 1247 | |
da6e162d | 1248 | if (fattr->type == RC_FILTER_NORMAL) |
c5540fbb | 1249 | filter = &dev->scancode_filter; |
da6e162d | 1250 | else |
c5540fbb | 1251 | filter = &dev->scancode_wakeup_filter; |
da6e162d | 1252 | |
da6e162d DH |
1253 | if (fattr->mask) |
1254 | val = filter->mask; | |
00942d1a | 1255 | else |
da6e162d | 1256 | val = filter->data; |
00942d1a JH |
1257 | mutex_unlock(&dev->lock); |
1258 | ||
1259 | return sprintf(buf, "%#x\n", val); | |
1260 | } | |
1261 | ||
1262 | /** | |
1263 | * store_filter() - changes the scancode filter value | |
1264 | * @device: the device descriptor | |
1265 | * @attr: the device attribute struct | |
1266 | * @buf: a pointer to the input buffer | |
1267 | * @len: length of the input buffer | |
1268 | * | |
1269 | * This routine is for changing a scancode filter value or mask. | |
1270 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1271 | * Returns -EINVAL if an invalid filter value for the current protocol was | |
1272 | * specified or if scancode filtering is not supported by the driver, otherwise | |
1273 | * returns @len. | |
1274 | * | |
1275 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1276 | * compared against input scancodes and non-matching scancodes are discarded. | |
1277 | * | |
18726a34 | 1278 | * dev->lock is taken to guard against races between |
00942d1a JH |
1279 | * store_filter and show_filter. |
1280 | */ | |
1281 | static ssize_t store_filter(struct device *device, | |
1282 | struct device_attribute *attr, | |
da6e162d | 1283 | const char *buf, size_t len) |
00942d1a JH |
1284 | { |
1285 | struct rc_dev *dev = to_rc_dev(device); | |
1286 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1287 | struct rc_scancode_filter new_filter, *filter; |
00942d1a JH |
1288 | int ret; |
1289 | unsigned long val; | |
23c843b5 | 1290 | int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter); |
00942d1a | 1291 | |
00942d1a JH |
1292 | ret = kstrtoul(buf, 0, &val); |
1293 | if (ret < 0) | |
1294 | return ret; | |
1295 | ||
da6e162d DH |
1296 | if (fattr->type == RC_FILTER_NORMAL) { |
1297 | set_filter = dev->s_filter; | |
c5540fbb | 1298 | filter = &dev->scancode_filter; |
da6e162d DH |
1299 | } else { |
1300 | set_filter = dev->s_wakeup_filter; | |
c5540fbb | 1301 | filter = &dev->scancode_wakeup_filter; |
da6e162d DH |
1302 | } |
1303 | ||
99b0f3c9 DH |
1304 | if (!set_filter) |
1305 | return -EINVAL; | |
00942d1a JH |
1306 | |
1307 | mutex_lock(&dev->lock); | |
1308 | ||
da6e162d | 1309 | new_filter = *filter; |
00942d1a | 1310 | if (fattr->mask) |
da6e162d | 1311 | new_filter.mask = val; |
00942d1a | 1312 | else |
da6e162d | 1313 | new_filter.data = val; |
23c843b5 | 1314 | |
0751d33c | 1315 | if (fattr->type == RC_FILTER_WAKEUP) { |
b590c0bf SY |
1316 | /* |
1317 | * Refuse to set a filter unless a protocol is enabled | |
1318 | * and the filter is valid for that protocol | |
1319 | */ | |
6d741bfe | 1320 | if (dev->wakeup_protocol != RC_PROTO_UNKNOWN) |
f423ccc1 | 1321 | ret = rc_validate_filter(dev, &new_filter); |
b590c0bf | 1322 | else |
0751d33c | 1323 | ret = -EINVAL; |
b590c0bf SY |
1324 | |
1325 | if (ret != 0) | |
0751d33c | 1326 | goto unlock; |
0751d33c SY |
1327 | } |
1328 | ||
1329 | if (fattr->type == RC_FILTER_NORMAL && !dev->enabled_protocols && | |
1330 | val) { | |
6bea25af JH |
1331 | /* refuse to set a filter unless a protocol is enabled */ |
1332 | ret = -EINVAL; | |
1333 | goto unlock; | |
1334 | } | |
23c843b5 | 1335 | |
da6e162d | 1336 | ret = set_filter(dev, &new_filter); |
99b0f3c9 DH |
1337 | if (ret < 0) |
1338 | goto unlock; | |
00942d1a | 1339 | |
da6e162d | 1340 | *filter = new_filter; |
00942d1a JH |
1341 | |
1342 | unlock: | |
1343 | mutex_unlock(&dev->lock); | |
da6e162d | 1344 | return (ret < 0) ? ret : len; |
00942d1a JH |
1345 | } |
1346 | ||
0751d33c SY |
1347 | /** |
1348 | * show_wakeup_protocols() - shows the wakeup IR protocol | |
1349 | * @device: the device descriptor | |
1350 | * @mattr: the device attribute struct | |
1351 | * @buf: a pointer to the output buffer | |
1352 | * | |
1353 | * This routine is a callback routine for input read the IR protocol type(s). | |
1354 | * it is trigged by reading /sys/class/rc/rc?/wakeup_protocols. | |
1355 | * It returns the protocol names of supported protocols. | |
1356 | * The enabled protocols are printed in brackets. | |
1357 | * | |
18726a34 DH |
1358 | * dev->lock is taken to guard against races between |
1359 | * store_wakeup_protocols and show_wakeup_protocols. | |
0751d33c SY |
1360 | */ |
1361 | static ssize_t show_wakeup_protocols(struct device *device, | |
1362 | struct device_attribute *mattr, | |
1363 | char *buf) | |
1364 | { | |
1365 | struct rc_dev *dev = to_rc_dev(device); | |
1366 | u64 allowed; | |
6d741bfe | 1367 | enum rc_proto enabled; |
0751d33c SY |
1368 | char *tmp = buf; |
1369 | int i; | |
1370 | ||
0751d33c SY |
1371 | mutex_lock(&dev->lock); |
1372 | ||
1373 | allowed = dev->allowed_wakeup_protocols; | |
1374 | enabled = dev->wakeup_protocol; | |
1375 | ||
1376 | mutex_unlock(&dev->lock); | |
1377 | ||
1378 | IR_dprintk(1, "%s: allowed - 0x%llx, enabled - %d\n", | |
1379 | __func__, (long long)allowed, enabled); | |
1380 | ||
d57ea877 | 1381 | for (i = 0; i < ARRAY_SIZE(protocols); i++) { |
0751d33c SY |
1382 | if (allowed & (1ULL << i)) { |
1383 | if (i == enabled) | |
d57ea877 | 1384 | tmp += sprintf(tmp, "[%s] ", protocols[i].name); |
0751d33c | 1385 | else |
d57ea877 | 1386 | tmp += sprintf(tmp, "%s ", protocols[i].name); |
0751d33c SY |
1387 | } |
1388 | } | |
1389 | ||
1390 | if (tmp != buf) | |
1391 | tmp--; | |
1392 | *tmp = '\n'; | |
1393 | ||
1394 | return tmp + 1 - buf; | |
1395 | } | |
1396 | ||
1397 | /** | |
1398 | * store_wakeup_protocols() - changes the wakeup IR protocol(s) | |
1399 | * @device: the device descriptor | |
1400 | * @mattr: the device attribute struct | |
1401 | * @buf: a pointer to the input buffer | |
1402 | * @len: length of the input buffer | |
1403 | * | |
1404 | * This routine is for changing the IR protocol type. | |
1405 | * It is trigged by writing to /sys/class/rc/rc?/wakeup_protocols. | |
1406 | * Returns @len on success or a negative error code. | |
1407 | * | |
18726a34 DH |
1408 | * dev->lock is taken to guard against races between |
1409 | * store_wakeup_protocols and show_wakeup_protocols. | |
0751d33c SY |
1410 | */ |
1411 | static ssize_t store_wakeup_protocols(struct device *device, | |
1412 | struct device_attribute *mattr, | |
1413 | const char *buf, size_t len) | |
1414 | { | |
1415 | struct rc_dev *dev = to_rc_dev(device); | |
6d741bfe | 1416 | enum rc_proto protocol; |
0751d33c SY |
1417 | ssize_t rc; |
1418 | u64 allowed; | |
1419 | int i; | |
1420 | ||
0751d33c SY |
1421 | mutex_lock(&dev->lock); |
1422 | ||
1423 | allowed = dev->allowed_wakeup_protocols; | |
1424 | ||
1425 | if (sysfs_streq(buf, "none")) { | |
6d741bfe | 1426 | protocol = RC_PROTO_UNKNOWN; |
0751d33c | 1427 | } else { |
d57ea877 | 1428 | for (i = 0; i < ARRAY_SIZE(protocols); i++) { |
0751d33c | 1429 | if ((allowed & (1ULL << i)) && |
d57ea877 | 1430 | sysfs_streq(buf, protocols[i].name)) { |
0751d33c SY |
1431 | protocol = i; |
1432 | break; | |
1433 | } | |
1434 | } | |
1435 | ||
d57ea877 | 1436 | if (i == ARRAY_SIZE(protocols)) { |
0751d33c SY |
1437 | rc = -EINVAL; |
1438 | goto out; | |
1439 | } | |
f423ccc1 JH |
1440 | |
1441 | if (dev->encode_wakeup) { | |
1442 | u64 mask = 1ULL << protocol; | |
1443 | ||
1444 | ir_raw_load_modules(&mask); | |
1445 | if (!mask) { | |
1446 | rc = -EINVAL; | |
1447 | goto out; | |
1448 | } | |
1449 | } | |
0751d33c SY |
1450 | } |
1451 | ||
1452 | if (dev->wakeup_protocol != protocol) { | |
1453 | dev->wakeup_protocol = protocol; | |
1454 | IR_dprintk(1, "Wakeup protocol changed to %d\n", protocol); | |
1455 | ||
6d741bfe | 1456 | if (protocol == RC_PROTO_RC6_MCE) |
0751d33c SY |
1457 | dev->scancode_wakeup_filter.data = 0x800f0000; |
1458 | else | |
1459 | dev->scancode_wakeup_filter.data = 0; | |
1460 | dev->scancode_wakeup_filter.mask = 0; | |
1461 | ||
1462 | rc = dev->s_wakeup_filter(dev, &dev->scancode_wakeup_filter); | |
1463 | if (rc == 0) | |
1464 | rc = len; | |
1465 | } else { | |
1466 | rc = len; | |
1467 | } | |
1468 | ||
1469 | out: | |
1470 | mutex_unlock(&dev->lock); | |
1471 | return rc; | |
1472 | } | |
1473 | ||
d8b4b582 DH |
1474 | static void rc_dev_release(struct device *device) |
1475 | { | |
47cae1e1 MK |
1476 | struct rc_dev *dev = to_rc_dev(device); |
1477 | ||
1478 | kfree(dev); | |
d8b4b582 DH |
1479 | } |
1480 | ||
bc2a6c57 MCC |
1481 | #define ADD_HOTPLUG_VAR(fmt, val...) \ |
1482 | do { \ | |
1483 | int err = add_uevent_var(env, fmt, val); \ | |
1484 | if (err) \ | |
1485 | return err; \ | |
1486 | } while (0) | |
1487 | ||
1488 | static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env) | |
1489 | { | |
d8b4b582 | 1490 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 | 1491 | |
b088ba65 MCC |
1492 | if (dev->rc_map.name) |
1493 | ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name); | |
d8b4b582 DH |
1494 | if (dev->driver_name) |
1495 | ADD_HOTPLUG_VAR("DRV_NAME=%s", dev->driver_name); | |
b9f407e3 SY |
1496 | if (dev->device_name) |
1497 | ADD_HOTPLUG_VAR("DEV_NAME=%s", dev->device_name); | |
bc2a6c57 MCC |
1498 | |
1499 | return 0; | |
1500 | } | |
1501 | ||
1502 | /* | |
1503 | * Static device attribute struct with the sysfs attributes for IR's | |
1504 | */ | |
6d75db30 SY |
1505 | static struct device_attribute dev_attr_ro_protocols = |
1506 | __ATTR(protocols, 0444, show_protocols, NULL); | |
1507 | static struct device_attribute dev_attr_rw_protocols = | |
1508 | __ATTR(protocols, 0644, show_protocols, store_protocols); | |
0751d33c SY |
1509 | static DEVICE_ATTR(wakeup_protocols, 0644, show_wakeup_protocols, |
1510 | store_wakeup_protocols); | |
00942d1a JH |
1511 | static RC_FILTER_ATTR(filter, S_IRUGO|S_IWUSR, |
1512 | show_filter, store_filter, RC_FILTER_NORMAL, false); | |
1513 | static RC_FILTER_ATTR(filter_mask, S_IRUGO|S_IWUSR, | |
1514 | show_filter, store_filter, RC_FILTER_NORMAL, true); | |
1515 | static RC_FILTER_ATTR(wakeup_filter, S_IRUGO|S_IWUSR, | |
1516 | show_filter, store_filter, RC_FILTER_WAKEUP, false); | |
1517 | static RC_FILTER_ATTR(wakeup_filter_mask, S_IRUGO|S_IWUSR, | |
1518 | show_filter, store_filter, RC_FILTER_WAKEUP, true); | |
bc2a6c57 | 1519 | |
6d75db30 SY |
1520 | static struct attribute *rc_dev_rw_protocol_attrs[] = { |
1521 | &dev_attr_rw_protocols.attr, | |
99b0f3c9 DH |
1522 | NULL, |
1523 | }; | |
1524 | ||
6d75db30 SY |
1525 | static const struct attribute_group rc_dev_rw_protocol_attr_grp = { |
1526 | .attrs = rc_dev_rw_protocol_attrs, | |
1527 | }; | |
1528 | ||
1529 | static struct attribute *rc_dev_ro_protocol_attrs[] = { | |
1530 | &dev_attr_ro_protocols.attr, | |
1531 | NULL, | |
1532 | }; | |
1533 | ||
1534 | static const struct attribute_group rc_dev_ro_protocol_attr_grp = { | |
1535 | .attrs = rc_dev_ro_protocol_attrs, | |
99b0f3c9 DH |
1536 | }; |
1537 | ||
99b0f3c9 | 1538 | static struct attribute *rc_dev_filter_attrs[] = { |
00942d1a JH |
1539 | &dev_attr_filter.attr.attr, |
1540 | &dev_attr_filter_mask.attr.attr, | |
bc2a6c57 MCC |
1541 | NULL, |
1542 | }; | |
1543 | ||
db68102c | 1544 | static const struct attribute_group rc_dev_filter_attr_grp = { |
99b0f3c9 | 1545 | .attrs = rc_dev_filter_attrs, |
bc2a6c57 MCC |
1546 | }; |
1547 | ||
99b0f3c9 DH |
1548 | static struct attribute *rc_dev_wakeup_filter_attrs[] = { |
1549 | &dev_attr_wakeup_filter.attr.attr, | |
1550 | &dev_attr_wakeup_filter_mask.attr.attr, | |
0751d33c | 1551 | &dev_attr_wakeup_protocols.attr, |
99b0f3c9 DH |
1552 | NULL, |
1553 | }; | |
1554 | ||
db68102c | 1555 | static const struct attribute_group rc_dev_wakeup_filter_attr_grp = { |
99b0f3c9 | 1556 | .attrs = rc_dev_wakeup_filter_attrs, |
bc2a6c57 MCC |
1557 | }; |
1558 | ||
f03f02f9 | 1559 | static const struct device_type rc_dev_type = { |
d8b4b582 | 1560 | .release = rc_dev_release, |
bc2a6c57 MCC |
1561 | .uevent = rc_dev_uevent, |
1562 | }; | |
1563 | ||
0f7499fd | 1564 | struct rc_dev *rc_allocate_device(enum rc_driver_type type) |
bc2a6c57 | 1565 | { |
d8b4b582 | 1566 | struct rc_dev *dev; |
bc2a6c57 | 1567 | |
d8b4b582 DH |
1568 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
1569 | if (!dev) | |
1570 | return NULL; | |
1571 | ||
d34aee10 AS |
1572 | if (type != RC_DRIVER_IR_RAW_TX) { |
1573 | dev->input_dev = input_allocate_device(); | |
1574 | if (!dev->input_dev) { | |
1575 | kfree(dev); | |
1576 | return NULL; | |
1577 | } | |
1578 | ||
1579 | dev->input_dev->getkeycode = ir_getkeycode; | |
1580 | dev->input_dev->setkeycode = ir_setkeycode; | |
1581 | input_set_drvdata(dev->input_dev, dev); | |
d8b4b582 | 1582 | |
b17ec78a | 1583 | timer_setup(&dev->timer_keyup, ir_timer_keyup, 0); |
d8b4b582 | 1584 | |
d34aee10 AS |
1585 | spin_lock_init(&dev->rc_map.lock); |
1586 | spin_lock_init(&dev->keylock); | |
1587 | } | |
08aeb7c9 | 1588 | mutex_init(&dev->lock); |
bc2a6c57 | 1589 | |
d8b4b582 | 1590 | dev->dev.type = &rc_dev_type; |
40fc5325 | 1591 | dev->dev.class = &rc_class; |
d8b4b582 DH |
1592 | device_initialize(&dev->dev); |
1593 | ||
0f7499fd AS |
1594 | dev->driver_type = type; |
1595 | ||
d8b4b582 DH |
1596 | __module_get(THIS_MODULE); |
1597 | return dev; | |
1598 | } | |
1599 | EXPORT_SYMBOL_GPL(rc_allocate_device); | |
1600 | ||
1601 | void rc_free_device(struct rc_dev *dev) | |
bc2a6c57 | 1602 | { |
b05681b9 MCC |
1603 | if (!dev) |
1604 | return; | |
1605 | ||
3dd94f00 | 1606 | input_free_device(dev->input_dev); |
b05681b9 MCC |
1607 | |
1608 | put_device(&dev->dev); | |
1609 | ||
47cae1e1 MK |
1610 | /* kfree(dev) will be called by the callback function |
1611 | rc_dev_release() */ | |
1612 | ||
b05681b9 | 1613 | module_put(THIS_MODULE); |
d8b4b582 DH |
1614 | } |
1615 | EXPORT_SYMBOL_GPL(rc_free_device); | |
1616 | ||
ddbf7d5a HK |
1617 | static void devm_rc_alloc_release(struct device *dev, void *res) |
1618 | { | |
1619 | rc_free_device(*(struct rc_dev **)res); | |
1620 | } | |
1621 | ||
0f7499fd AS |
1622 | struct rc_dev *devm_rc_allocate_device(struct device *dev, |
1623 | enum rc_driver_type type) | |
ddbf7d5a HK |
1624 | { |
1625 | struct rc_dev **dr, *rc; | |
1626 | ||
1627 | dr = devres_alloc(devm_rc_alloc_release, sizeof(*dr), GFP_KERNEL); | |
1628 | if (!dr) | |
1629 | return NULL; | |
1630 | ||
0f7499fd | 1631 | rc = rc_allocate_device(type); |
ddbf7d5a HK |
1632 | if (!rc) { |
1633 | devres_free(dr); | |
1634 | return NULL; | |
1635 | } | |
1636 | ||
1637 | rc->dev.parent = dev; | |
1638 | rc->managed_alloc = true; | |
1639 | *dr = rc; | |
1640 | devres_add(dev, dr); | |
1641 | ||
1642 | return rc; | |
1643 | } | |
1644 | EXPORT_SYMBOL_GPL(devm_rc_allocate_device); | |
1645 | ||
f56928ab | 1646 | static int rc_prepare_rx_device(struct rc_dev *dev) |
d8b4b582 | 1647 | { |
fcb13097 | 1648 | int rc; |
7ff2c2bc | 1649 | struct rc_map *rc_map; |
6d741bfe | 1650 | u64 rc_proto; |
bc2a6c57 | 1651 | |
7ff2c2bc | 1652 | if (!dev->map_name) |
d8b4b582 | 1653 | return -EINVAL; |
bc2a6c57 | 1654 | |
d100e659 | 1655 | rc_map = rc_map_get(dev->map_name); |
b088ba65 | 1656 | if (!rc_map) |
d100e659 | 1657 | rc_map = rc_map_get(RC_MAP_EMPTY); |
b088ba65 | 1658 | if (!rc_map || !rc_map->scan || rc_map->size == 0) |
d8b4b582 DH |
1659 | return -EINVAL; |
1660 | ||
7ff2c2bc AS |
1661 | rc = ir_setkeytable(dev, rc_map); |
1662 | if (rc) | |
1663 | return rc; | |
1664 | ||
6d741bfe | 1665 | rc_proto = BIT_ULL(rc_map->rc_proto); |
7ff2c2bc | 1666 | |
831c4c81 SY |
1667 | if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol) |
1668 | dev->enabled_protocols = dev->allowed_protocols; | |
1669 | ||
41380868 | 1670 | if (dev->change_protocol) { |
6d741bfe | 1671 | rc = dev->change_protocol(dev, &rc_proto); |
7ff2c2bc AS |
1672 | if (rc < 0) |
1673 | goto out_table; | |
6d741bfe | 1674 | dev->enabled_protocols = rc_proto; |
7ff2c2bc AS |
1675 | } |
1676 | ||
41380868 | 1677 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
6d741bfe | 1678 | ir_raw_load_modules(&rc_proto); |
41380868 | 1679 | |
d8b4b582 DH |
1680 | set_bit(EV_KEY, dev->input_dev->evbit); |
1681 | set_bit(EV_REP, dev->input_dev->evbit); | |
1682 | set_bit(EV_MSC, dev->input_dev->evbit); | |
1683 | set_bit(MSC_SCAN, dev->input_dev->mscbit); | |
1684 | if (dev->open) | |
1685 | dev->input_dev->open = ir_open; | |
1686 | if (dev->close) | |
1687 | dev->input_dev->close = ir_close; | |
1688 | ||
b2aceb73 DH |
1689 | dev->input_dev->dev.parent = &dev->dev; |
1690 | memcpy(&dev->input_dev->id, &dev->input_id, sizeof(dev->input_id)); | |
1691 | dev->input_dev->phys = dev->input_phys; | |
518f4b26 | 1692 | dev->input_dev->name = dev->device_name; |
b2aceb73 | 1693 | |
f56928ab DH |
1694 | return 0; |
1695 | ||
1696 | out_table: | |
1697 | ir_free_table(&dev->rc_map); | |
1698 | ||
1699 | return rc; | |
1700 | } | |
1701 | ||
1702 | static int rc_setup_rx_device(struct rc_dev *dev) | |
1703 | { | |
1704 | int rc; | |
1705 | ||
b2aceb73 DH |
1706 | /* rc_open will be called here */ |
1707 | rc = input_register_device(dev->input_dev); | |
1708 | if (rc) | |
f56928ab | 1709 | return rc; |
b2aceb73 | 1710 | |
7ff2c2bc AS |
1711 | /* |
1712 | * Default delay of 250ms is too short for some protocols, especially | |
1713 | * since the timeout is currently set to 250ms. Increase it to 500ms, | |
1714 | * to avoid wrong repetition of the keycodes. Note that this must be | |
1715 | * set after the call to input_register_device(). | |
1716 | */ | |
1717 | dev->input_dev->rep[REP_DELAY] = 500; | |
1718 | ||
1719 | /* | |
1720 | * As a repeat event on protocols like RC-5 and NEC take as long as | |
1721 | * 110/114ms, using 33ms as a repeat period is not the right thing | |
1722 | * to do. | |
1723 | */ | |
1724 | dev->input_dev->rep[REP_PERIOD] = 125; | |
1725 | ||
7ff2c2bc | 1726 | return 0; |
7ff2c2bc AS |
1727 | } |
1728 | ||
1729 | static void rc_free_rx_device(struct rc_dev *dev) | |
1730 | { | |
f56928ab | 1731 | if (!dev) |
7ff2c2bc AS |
1732 | return; |
1733 | ||
f56928ab DH |
1734 | if (dev->input_dev) { |
1735 | input_unregister_device(dev->input_dev); | |
1736 | dev->input_dev = NULL; | |
1737 | } | |
7ff2c2bc | 1738 | |
f56928ab | 1739 | ir_free_table(&dev->rc_map); |
7ff2c2bc AS |
1740 | } |
1741 | ||
1742 | int rc_register_device(struct rc_dev *dev) | |
1743 | { | |
7ff2c2bc AS |
1744 | const char *path; |
1745 | int attr = 0; | |
1746 | int minor; | |
1747 | int rc; | |
1748 | ||
1749 | if (!dev) | |
1750 | return -EINVAL; | |
1751 | ||
fcb13097 DH |
1752 | minor = ida_simple_get(&rc_ida, 0, RC_DEV_MAX, GFP_KERNEL); |
1753 | if (minor < 0) | |
1754 | return minor; | |
1755 | ||
1756 | dev->minor = minor; | |
1757 | dev_set_name(&dev->dev, "rc%u", dev->minor); | |
1758 | dev_set_drvdata(&dev->dev, dev); | |
587d1b06 | 1759 | |
99b0f3c9 | 1760 | dev->dev.groups = dev->sysfs_groups; |
6d75db30 SY |
1761 | if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol) |
1762 | dev->sysfs_groups[attr++] = &rc_dev_ro_protocol_attr_grp; | |
1763 | else if (dev->driver_type != RC_DRIVER_IR_RAW_TX) | |
1764 | dev->sysfs_groups[attr++] = &rc_dev_rw_protocol_attr_grp; | |
99b0f3c9 | 1765 | if (dev->s_filter) |
120703f9 | 1766 | dev->sysfs_groups[attr++] = &rc_dev_filter_attr_grp; |
99b0f3c9 DH |
1767 | if (dev->s_wakeup_filter) |
1768 | dev->sysfs_groups[attr++] = &rc_dev_wakeup_filter_attr_grp; | |
99b0f3c9 DH |
1769 | dev->sysfs_groups[attr++] = NULL; |
1770 | ||
f56928ab DH |
1771 | if (dev->driver_type == RC_DRIVER_IR_RAW || |
1772 | dev->driver_type == RC_DRIVER_IR_RAW_TX) { | |
1773 | rc = ir_raw_event_prepare(dev); | |
1774 | if (rc < 0) | |
1775 | goto out_minor; | |
1776 | } | |
1777 | ||
1778 | if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { | |
1779 | rc = rc_prepare_rx_device(dev); | |
1780 | if (rc) | |
1781 | goto out_raw; | |
1782 | } | |
1783 | ||
d8b4b582 DH |
1784 | rc = device_add(&dev->dev); |
1785 | if (rc) | |
f56928ab | 1786 | goto out_rx_free; |
bc2a6c57 | 1787 | |
d8b4b582 | 1788 | path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL); |
4dc0e908 | 1789 | dev_info(&dev->dev, "%s as %s\n", |
518f4b26 | 1790 | dev->device_name ?: "Unspecified device", path ?: "N/A"); |
bc2a6c57 MCC |
1791 | kfree(path); |
1792 | ||
f56928ab DH |
1793 | if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { |
1794 | rc = rc_setup_rx_device(dev); | |
1795 | if (rc) | |
1796 | goto out_dev; | |
1797 | } | |
1798 | ||
d34aee10 AS |
1799 | if (dev->driver_type == RC_DRIVER_IR_RAW || |
1800 | dev->driver_type == RC_DRIVER_IR_RAW_TX) { | |
d8b4b582 DH |
1801 | rc = ir_raw_event_register(dev); |
1802 | if (rc < 0) | |
f56928ab | 1803 | goto out_rx; |
d8b4b582 DH |
1804 | } |
1805 | ||
7ff2c2bc | 1806 | IR_dprintk(1, "Registered rc%u (driver: %s)\n", |
fcb13097 | 1807 | dev->minor, |
7ff2c2bc | 1808 | dev->driver_name ? dev->driver_name : "unknown"); |
d8b4b582 | 1809 | |
bc2a6c57 | 1810 | return 0; |
d8b4b582 | 1811 | |
f56928ab DH |
1812 | out_rx: |
1813 | rc_free_rx_device(dev); | |
d8b4b582 DH |
1814 | out_dev: |
1815 | device_del(&dev->dev); | |
f56928ab DH |
1816 | out_rx_free: |
1817 | ir_free_table(&dev->rc_map); | |
1818 | out_raw: | |
1819 | ir_raw_event_free(dev); | |
1820 | out_minor: | |
fcb13097 | 1821 | ida_simple_remove(&rc_ida, minor); |
d8b4b582 | 1822 | return rc; |
bc2a6c57 | 1823 | } |
d8b4b582 | 1824 | EXPORT_SYMBOL_GPL(rc_register_device); |
bc2a6c57 | 1825 | |
ddbf7d5a HK |
1826 | static void devm_rc_release(struct device *dev, void *res) |
1827 | { | |
1828 | rc_unregister_device(*(struct rc_dev **)res); | |
1829 | } | |
1830 | ||
1831 | int devm_rc_register_device(struct device *parent, struct rc_dev *dev) | |
1832 | { | |
1833 | struct rc_dev **dr; | |
1834 | int ret; | |
1835 | ||
1836 | dr = devres_alloc(devm_rc_release, sizeof(*dr), GFP_KERNEL); | |
1837 | if (!dr) | |
1838 | return -ENOMEM; | |
1839 | ||
1840 | ret = rc_register_device(dev); | |
1841 | if (ret) { | |
1842 | devres_free(dr); | |
1843 | return ret; | |
1844 | } | |
1845 | ||
1846 | *dr = dev; | |
1847 | devres_add(parent, dr); | |
1848 | ||
1849 | return 0; | |
1850 | } | |
1851 | EXPORT_SYMBOL_GPL(devm_rc_register_device); | |
1852 | ||
d8b4b582 | 1853 | void rc_unregister_device(struct rc_dev *dev) |
bc2a6c57 | 1854 | { |
d8b4b582 DH |
1855 | if (!dev) |
1856 | return; | |
bc2a6c57 | 1857 | |
d8b4b582 | 1858 | del_timer_sync(&dev->timer_keyup); |
bc2a6c57 | 1859 | |
d8b4b582 DH |
1860 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1861 | ir_raw_event_unregister(dev); | |
1862 | ||
7ff2c2bc | 1863 | rc_free_rx_device(dev); |
d8b4b582 | 1864 | |
b05681b9 | 1865 | device_del(&dev->dev); |
d8b4b582 | 1866 | |
fcb13097 DH |
1867 | ida_simple_remove(&rc_ida, dev->minor); |
1868 | ||
ddbf7d5a HK |
1869 | if (!dev->managed_alloc) |
1870 | rc_free_device(dev); | |
bc2a6c57 | 1871 | } |
b05681b9 | 1872 | |
d8b4b582 | 1873 | EXPORT_SYMBOL_GPL(rc_unregister_device); |
bc2a6c57 MCC |
1874 | |
1875 | /* | |
1876 | * Init/exit code for the module. Basically, creates/removes /sys/class/rc | |
1877 | */ | |
1878 | ||
6bda9644 | 1879 | static int __init rc_core_init(void) |
bc2a6c57 | 1880 | { |
40fc5325 | 1881 | int rc = class_register(&rc_class); |
bc2a6c57 | 1882 | if (rc) { |
d3d96820 | 1883 | pr_err("rc_core: unable to register rc class\n"); |
bc2a6c57 MCC |
1884 | return rc; |
1885 | } | |
1886 | ||
153a60bb | 1887 | led_trigger_register_simple("rc-feedback", &led_feedback); |
d100e659 | 1888 | rc_map_register(&empty_map); |
bc2a6c57 MCC |
1889 | |
1890 | return 0; | |
1891 | } | |
1892 | ||
6bda9644 | 1893 | static void __exit rc_core_exit(void) |
bc2a6c57 | 1894 | { |
40fc5325 | 1895 | class_unregister(&rc_class); |
153a60bb | 1896 | led_trigger_unregister_simple(led_feedback); |
d100e659 | 1897 | rc_map_unregister(&empty_map); |
bc2a6c57 MCC |
1898 | } |
1899 | ||
e76d4ce4 | 1900 | subsys_initcall(rc_core_init); |
6bda9644 | 1901 | module_exit(rc_core_exit); |
bc2a6c57 | 1902 | |
6bda9644 MCC |
1903 | int rc_core_debug; /* ir_debug level (0,1,2) */ |
1904 | EXPORT_SYMBOL_GPL(rc_core_debug); | |
1905 | module_param_named(debug, rc_core_debug, int, 0644); | |
446e4a64 | 1906 | |
37e59f87 | 1907 | MODULE_AUTHOR("Mauro Carvalho Chehab"); |
446e4a64 | 1908 | MODULE_LICENSE("GPL"); |