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 | ||
d3d96820 MCC |
15 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
16 | ||
6bda9644 | 17 | #include <media/rc-core.h> |
631493ec MCC |
18 | #include <linux/spinlock.h> |
19 | #include <linux/delay.h> | |
882ead32 | 20 | #include <linux/input.h> |
153a60bb | 21 | #include <linux/leds.h> |
5a0e3ad6 | 22 | #include <linux/slab.h> |
fcb13097 | 23 | #include <linux/idr.h> |
bc2a6c57 | 24 | #include <linux/device.h> |
7a707b89 | 25 | #include <linux/module.h> |
f62de675 | 26 | #include "rc-core-priv.h" |
ef53a115 | 27 | |
b3074c0a DH |
28 | /* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */ |
29 | #define IR_TAB_MIN_SIZE 256 | |
30 | #define IR_TAB_MAX_SIZE 8192 | |
fcb13097 | 31 | #define RC_DEV_MAX 256 |
f6fc5049 | 32 | |
d57ea877 SY |
33 | static const struct { |
34 | const char *name; | |
35 | unsigned int repeat_period; | |
36 | unsigned int scancode_bits; | |
37 | } protocols[] = { | |
6d741bfe SY |
38 | [RC_PROTO_UNKNOWN] = { .name = "unknown", .repeat_period = 250 }, |
39 | [RC_PROTO_OTHER] = { .name = "other", .repeat_period = 250 }, | |
40 | [RC_PROTO_RC5] = { .name = "rc-5", | |
d57ea877 | 41 | .scancode_bits = 0x1f7f, .repeat_period = 164 }, |
6d741bfe | 42 | [RC_PROTO_RC5X_20] = { .name = "rc-5x-20", |
d57ea877 | 43 | .scancode_bits = 0x1f7f3f, .repeat_period = 164 }, |
6d741bfe | 44 | [RC_PROTO_RC5_SZ] = { .name = "rc-5-sz", |
d57ea877 | 45 | .scancode_bits = 0x2fff, .repeat_period = 164 }, |
6d741bfe | 46 | [RC_PROTO_JVC] = { .name = "jvc", |
d57ea877 | 47 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 48 | [RC_PROTO_SONY12] = { .name = "sony-12", |
d57ea877 | 49 | .scancode_bits = 0x1f007f, .repeat_period = 100 }, |
6d741bfe | 50 | [RC_PROTO_SONY15] = { .name = "sony-15", |
d57ea877 | 51 | .scancode_bits = 0xff007f, .repeat_period = 100 }, |
6d741bfe | 52 | [RC_PROTO_SONY20] = { .name = "sony-20", |
d57ea877 | 53 | .scancode_bits = 0x1fff7f, .repeat_period = 100 }, |
6d741bfe | 54 | [RC_PROTO_NEC] = { .name = "nec", |
d57ea877 | 55 | .scancode_bits = 0xffff, .repeat_period = 160 }, |
6d741bfe | 56 | [RC_PROTO_NECX] = { .name = "nec-x", |
d57ea877 | 57 | .scancode_bits = 0xffffff, .repeat_period = 160 }, |
6d741bfe | 58 | [RC_PROTO_NEC32] = { .name = "nec-32", |
d57ea877 | 59 | .scancode_bits = 0xffffffff, .repeat_period = 160 }, |
6d741bfe | 60 | [RC_PROTO_SANYO] = { .name = "sanyo", |
d57ea877 | 61 | .scancode_bits = 0x1fffff, .repeat_period = 250 }, |
6d741bfe | 62 | [RC_PROTO_MCIR2_KBD] = { .name = "mcir2-kbd", |
d57ea877 | 63 | .scancode_bits = 0xffff, .repeat_period = 150 }, |
6d741bfe | 64 | [RC_PROTO_MCIR2_MSE] = { .name = "mcir2-mse", |
d57ea877 | 65 | .scancode_bits = 0x1fffff, .repeat_period = 150 }, |
6d741bfe | 66 | [RC_PROTO_RC6_0] = { .name = "rc-6-0", |
d57ea877 | 67 | .scancode_bits = 0xffff, .repeat_period = 164 }, |
6d741bfe | 68 | [RC_PROTO_RC6_6A_20] = { .name = "rc-6-6a-20", |
d57ea877 | 69 | .scancode_bits = 0xfffff, .repeat_period = 164 }, |
6d741bfe | 70 | [RC_PROTO_RC6_6A_24] = { .name = "rc-6-6a-24", |
d57ea877 | 71 | .scancode_bits = 0xffffff, .repeat_period = 164 }, |
6d741bfe | 72 | [RC_PROTO_RC6_6A_32] = { .name = "rc-6-6a-32", |
d57ea877 | 73 | .scancode_bits = 0xffffffff, .repeat_period = 164 }, |
6d741bfe | 74 | [RC_PROTO_RC6_MCE] = { .name = "rc-6-mce", |
d57ea877 | 75 | .scancode_bits = 0xffff7fff, .repeat_period = 164 }, |
6d741bfe | 76 | [RC_PROTO_SHARP] = { .name = "sharp", |
d57ea877 | 77 | .scancode_bits = 0x1fff, .repeat_period = 250 }, |
6d741bfe SY |
78 | [RC_PROTO_XMP] = { .name = "xmp", .repeat_period = 250 }, |
79 | [RC_PROTO_CEC] = { .name = "cec", .repeat_period = 550 }, | |
d57ea877 | 80 | }; |
a374fef4 | 81 | |
4c7b355d | 82 | /* Used to keep track of known keymaps */ |
631493ec MCC |
83 | static LIST_HEAD(rc_map_list); |
84 | static DEFINE_SPINLOCK(rc_map_lock); | |
153a60bb | 85 | static struct led_trigger *led_feedback; |
631493ec | 86 | |
fcb13097 DH |
87 | /* Used to keep track of rc devices */ |
88 | static DEFINE_IDA(rc_ida); | |
89 | ||
d100e659 | 90 | static struct rc_map_list *seek_rc_map(const char *name) |
631493ec | 91 | { |
d100e659 | 92 | struct rc_map_list *map = NULL; |
631493ec MCC |
93 | |
94 | spin_lock(&rc_map_lock); | |
95 | list_for_each_entry(map, &rc_map_list, list) { | |
96 | if (!strcmp(name, map->map.name)) { | |
97 | spin_unlock(&rc_map_lock); | |
98 | return map; | |
99 | } | |
100 | } | |
101 | spin_unlock(&rc_map_lock); | |
102 | ||
103 | return NULL; | |
104 | } | |
105 | ||
d100e659 | 106 | struct rc_map *rc_map_get(const char *name) |
631493ec MCC |
107 | { |
108 | ||
d100e659 | 109 | struct rc_map_list *map; |
631493ec MCC |
110 | |
111 | map = seek_rc_map(name); | |
2ff56fad | 112 | #ifdef CONFIG_MODULES |
631493ec | 113 | if (!map) { |
8ea5488a | 114 | int rc = request_module("%s", name); |
631493ec | 115 | if (rc < 0) { |
d3d96820 | 116 | pr_err("Couldn't load IR keymap %s\n", name); |
631493ec MCC |
117 | return NULL; |
118 | } | |
119 | msleep(20); /* Give some time for IR to register */ | |
120 | ||
121 | map = seek_rc_map(name); | |
122 | } | |
123 | #endif | |
124 | if (!map) { | |
d3d96820 | 125 | pr_err("IR keymap %s not found\n", name); |
631493ec MCC |
126 | return NULL; |
127 | } | |
128 | ||
129 | printk(KERN_INFO "Registered IR keymap %s\n", map->map.name); | |
130 | ||
131 | return &map->map; | |
132 | } | |
d100e659 | 133 | EXPORT_SYMBOL_GPL(rc_map_get); |
631493ec | 134 | |
d100e659 | 135 | int rc_map_register(struct rc_map_list *map) |
631493ec MCC |
136 | { |
137 | spin_lock(&rc_map_lock); | |
138 | list_add_tail(&map->list, &rc_map_list); | |
139 | spin_unlock(&rc_map_lock); | |
140 | return 0; | |
141 | } | |
d100e659 | 142 | EXPORT_SYMBOL_GPL(rc_map_register); |
631493ec | 143 | |
d100e659 | 144 | void rc_map_unregister(struct rc_map_list *map) |
631493ec MCC |
145 | { |
146 | spin_lock(&rc_map_lock); | |
147 | list_del(&map->list); | |
148 | spin_unlock(&rc_map_lock); | |
149 | } | |
d100e659 | 150 | EXPORT_SYMBOL_GPL(rc_map_unregister); |
631493ec MCC |
151 | |
152 | ||
2f4f58d6 | 153 | static struct rc_map_table empty[] = { |
631493ec MCC |
154 | { 0x2a, KEY_COFFEE }, |
155 | }; | |
156 | ||
d100e659 | 157 | static struct rc_map_list empty_map = { |
631493ec | 158 | .map = { |
6d741bfe SY |
159 | .scan = empty, |
160 | .size = ARRAY_SIZE(empty), | |
161 | .rc_proto = RC_PROTO_UNKNOWN, /* Legacy IR type */ | |
162 | .name = RC_MAP_EMPTY, | |
631493ec MCC |
163 | } |
164 | }; | |
165 | ||
9f470095 DT |
166 | /** |
167 | * ir_create_table() - initializes a scancode table | |
b088ba65 | 168 | * @rc_map: the rc_map to initialize |
9f470095 | 169 | * @name: name to assign to the table |
6d741bfe | 170 | * @rc_proto: ir type to assign to the new table |
9f470095 DT |
171 | * @size: initial size of the table |
172 | * @return: zero on success or a negative error code | |
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. |
9f470095 | 176 | */ |
b088ba65 | 177 | static int ir_create_table(struct rc_map *rc_map, |
6d741bfe | 178 | const char *name, u64 rc_proto, size_t size) |
9f470095 | 179 | { |
d54fc3bb HV |
180 | rc_map->name = kstrdup(name, GFP_KERNEL); |
181 | if (!rc_map->name) | |
182 | return -ENOMEM; | |
6d741bfe | 183 | rc_map->rc_proto = rc_proto; |
2f4f58d6 MCC |
184 | rc_map->alloc = roundup_pow_of_two(size * sizeof(struct rc_map_table)); |
185 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); | |
b088ba65 | 186 | rc_map->scan = kmalloc(rc_map->alloc, GFP_KERNEL); |
d54fc3bb HV |
187 | if (!rc_map->scan) { |
188 | kfree(rc_map->name); | |
189 | rc_map->name = NULL; | |
9f470095 | 190 | return -ENOMEM; |
d54fc3bb | 191 | } |
9f470095 DT |
192 | |
193 | IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", | |
b088ba65 | 194 | rc_map->size, rc_map->alloc); |
9f470095 DT |
195 | return 0; |
196 | } | |
197 | ||
198 | /** | |
199 | * ir_free_table() - frees memory allocated by a scancode table | |
b088ba65 | 200 | * @rc_map: the table whose mappings need to be freed |
9f470095 DT |
201 | * |
202 | * This routine will free memory alloctaed for key mappings used by given | |
203 | * scancode table. | |
204 | */ | |
b088ba65 | 205 | static void ir_free_table(struct rc_map *rc_map) |
9f470095 | 206 | { |
b088ba65 | 207 | rc_map->size = 0; |
d54fc3bb | 208 | kfree(rc_map->name); |
c183d358 | 209 | rc_map->name = NULL; |
b088ba65 MCC |
210 | kfree(rc_map->scan); |
211 | rc_map->scan = NULL; | |
9f470095 DT |
212 | } |
213 | ||
7fee03e4 | 214 | /** |
b3074c0a | 215 | * ir_resize_table() - resizes a scancode table if necessary |
b088ba65 | 216 | * @rc_map: the rc_map to resize |
9f470095 | 217 | * @gfp_flags: gfp flags to use when allocating memory |
b3074c0a | 218 | * @return: zero on success or a negative error code |
7fee03e4 | 219 | * |
b088ba65 | 220 | * This routine will shrink the rc_map if it has lots of |
b3074c0a | 221 | * unused entries and grow it if it is full. |
7fee03e4 | 222 | */ |
b088ba65 | 223 | static int ir_resize_table(struct rc_map *rc_map, gfp_t gfp_flags) |
7fee03e4 | 224 | { |
b088ba65 | 225 | unsigned int oldalloc = rc_map->alloc; |
b3074c0a | 226 | unsigned int newalloc = oldalloc; |
2f4f58d6 MCC |
227 | struct rc_map_table *oldscan = rc_map->scan; |
228 | struct rc_map_table *newscan; | |
b3074c0a | 229 | |
b088ba65 | 230 | if (rc_map->size == rc_map->len) { |
b3074c0a | 231 | /* All entries in use -> grow keytable */ |
b088ba65 | 232 | if (rc_map->alloc >= IR_TAB_MAX_SIZE) |
b3074c0a | 233 | return -ENOMEM; |
7fee03e4 | 234 | |
b3074c0a DH |
235 | newalloc *= 2; |
236 | IR_dprintk(1, "Growing table to %u bytes\n", newalloc); | |
237 | } | |
7fee03e4 | 238 | |
b088ba65 | 239 | if ((rc_map->len * 3 < rc_map->size) && (oldalloc > IR_TAB_MIN_SIZE)) { |
b3074c0a DH |
240 | /* Less than 1/3 of entries in use -> shrink keytable */ |
241 | newalloc /= 2; | |
242 | IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc); | |
243 | } | |
7fee03e4 | 244 | |
b3074c0a DH |
245 | if (newalloc == oldalloc) |
246 | return 0; | |
7fee03e4 | 247 | |
9f470095 | 248 | newscan = kmalloc(newalloc, gfp_flags); |
b3074c0a DH |
249 | if (!newscan) { |
250 | IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc); | |
251 | return -ENOMEM; | |
252 | } | |
7fee03e4 | 253 | |
2f4f58d6 | 254 | memcpy(newscan, rc_map->scan, rc_map->len * sizeof(struct rc_map_table)); |
b088ba65 MCC |
255 | rc_map->scan = newscan; |
256 | rc_map->alloc = newalloc; | |
2f4f58d6 | 257 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); |
b3074c0a DH |
258 | kfree(oldscan); |
259 | return 0; | |
7fee03e4 MCC |
260 | } |
261 | ||
f6fc5049 | 262 | /** |
9f470095 | 263 | * ir_update_mapping() - set a keycode in the scancode->keycode table |
d8b4b582 | 264 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 265 | * @rc_map: scancode table to be adjusted |
9f470095 DT |
266 | * @index: index of the mapping that needs to be updated |
267 | * @keycode: the desired keycode | |
268 | * @return: previous keycode assigned to the mapping | |
269 | * | |
d8b4b582 | 270 | * This routine is used to update scancode->keycode mapping at given |
9f470095 DT |
271 | * position. |
272 | */ | |
d8b4b582 | 273 | static unsigned int ir_update_mapping(struct rc_dev *dev, |
b088ba65 | 274 | struct rc_map *rc_map, |
9f470095 DT |
275 | unsigned int index, |
276 | unsigned int new_keycode) | |
277 | { | |
b088ba65 | 278 | int old_keycode = rc_map->scan[index].keycode; |
9f470095 DT |
279 | int i; |
280 | ||
281 | /* Did the user wish to remove the mapping? */ | |
282 | if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) { | |
283 | IR_dprintk(1, "#%d: Deleting scan 0x%04x\n", | |
b088ba65 MCC |
284 | index, rc_map->scan[index].scancode); |
285 | rc_map->len--; | |
286 | memmove(&rc_map->scan[index], &rc_map->scan[index+ 1], | |
2f4f58d6 | 287 | (rc_map->len - index) * sizeof(struct rc_map_table)); |
9f470095 DT |
288 | } else { |
289 | IR_dprintk(1, "#%d: %s scan 0x%04x with key 0x%04x\n", | |
290 | index, | |
291 | old_keycode == KEY_RESERVED ? "New" : "Replacing", | |
b088ba65 MCC |
292 | rc_map->scan[index].scancode, new_keycode); |
293 | rc_map->scan[index].keycode = new_keycode; | |
d8b4b582 | 294 | __set_bit(new_keycode, dev->input_dev->keybit); |
9f470095 DT |
295 | } |
296 | ||
297 | if (old_keycode != KEY_RESERVED) { | |
298 | /* A previous mapping was updated... */ | |
d8b4b582 | 299 | __clear_bit(old_keycode, dev->input_dev->keybit); |
9f470095 | 300 | /* ... but another scancode might use the same keycode */ |
b088ba65 MCC |
301 | for (i = 0; i < rc_map->len; i++) { |
302 | if (rc_map->scan[i].keycode == old_keycode) { | |
d8b4b582 | 303 | __set_bit(old_keycode, dev->input_dev->keybit); |
9f470095 DT |
304 | break; |
305 | } | |
306 | } | |
307 | ||
308 | /* Possibly shrink the keytable, failure is not a problem */ | |
b088ba65 | 309 | ir_resize_table(rc_map, GFP_ATOMIC); |
9f470095 DT |
310 | } |
311 | ||
312 | return old_keycode; | |
313 | } | |
314 | ||
315 | /** | |
4c7b355d | 316 | * ir_establish_scancode() - set a keycode in the scancode->keycode table |
d8b4b582 | 317 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 318 | * @rc_map: scancode table to be searched |
9f470095 DT |
319 | * @scancode: the desired scancode |
320 | * @resize: controls whether we allowed to resize the table to | |
25985edc | 321 | * accommodate not yet present scancodes |
9f470095 DT |
322 | * @return: index of the mapping containing scancode in question |
323 | * or -1U in case of failure. | |
f6fc5049 | 324 | * |
b088ba65 | 325 | * This routine is used to locate given scancode in rc_map. |
9f470095 DT |
326 | * If scancode is not yet present the routine will allocate a new slot |
327 | * for it. | |
f6fc5049 | 328 | */ |
d8b4b582 | 329 | static unsigned int ir_establish_scancode(struct rc_dev *dev, |
b088ba65 | 330 | struct rc_map *rc_map, |
9f470095 DT |
331 | unsigned int scancode, |
332 | bool resize) | |
f6fc5049 | 333 | { |
b3074c0a | 334 | unsigned int i; |
9dfe4e83 MCC |
335 | |
336 | /* | |
337 | * Unfortunately, some hardware-based IR decoders don't provide | |
338 | * all bits for the complete IR code. In general, they provide only | |
339 | * the command part of the IR code. Yet, as it is possible to replace | |
340 | * the provided IR with another one, it is needed to allow loading | |
d8b4b582 DH |
341 | * IR tables from other remotes. So, we support specifying a mask to |
342 | * indicate the valid bits of the scancodes. | |
9dfe4e83 | 343 | */ |
9d2f1d3c DH |
344 | if (dev->scancode_mask) |
345 | scancode &= dev->scancode_mask; | |
b3074c0a DH |
346 | |
347 | /* First check if we already have a mapping for this ir command */ | |
b088ba65 MCC |
348 | for (i = 0; i < rc_map->len; i++) { |
349 | if (rc_map->scan[i].scancode == scancode) | |
9f470095 DT |
350 | return i; |
351 | ||
b3074c0a | 352 | /* Keytable is sorted from lowest to highest scancode */ |
b088ba65 | 353 | if (rc_map->scan[i].scancode >= scancode) |
b3074c0a | 354 | break; |
b3074c0a | 355 | } |
f6fc5049 | 356 | |
9f470095 | 357 | /* No previous mapping found, we might need to grow the table */ |
b088ba65 MCC |
358 | if (rc_map->size == rc_map->len) { |
359 | if (!resize || ir_resize_table(rc_map, GFP_ATOMIC)) | |
9f470095 DT |
360 | return -1U; |
361 | } | |
35438946 | 362 | |
9f470095 | 363 | /* i is the proper index to insert our new keycode */ |
b088ba65 MCC |
364 | if (i < rc_map->len) |
365 | memmove(&rc_map->scan[i + 1], &rc_map->scan[i], | |
2f4f58d6 | 366 | (rc_map->len - i) * sizeof(struct rc_map_table)); |
b088ba65 MCC |
367 | rc_map->scan[i].scancode = scancode; |
368 | rc_map->scan[i].keycode = KEY_RESERVED; | |
369 | rc_map->len++; | |
f6fc5049 | 370 | |
9f470095 | 371 | return i; |
f6fc5049 MCC |
372 | } |
373 | ||
ef53a115 | 374 | /** |
b3074c0a | 375 | * ir_setkeycode() - set a keycode in the scancode->keycode table |
d8b4b582 | 376 | * @idev: the struct input_dev device descriptor |
ef53a115 | 377 | * @scancode: the desired scancode |
b3074c0a DH |
378 | * @keycode: result |
379 | * @return: -EINVAL if the keycode could not be inserted, otherwise zero. | |
ef53a115 | 380 | * |
b3074c0a | 381 | * This routine is used to handle evdev EVIOCSKEY ioctl. |
ef53a115 | 382 | */ |
d8b4b582 | 383 | static int ir_setkeycode(struct input_dev *idev, |
9f470095 DT |
384 | const struct input_keymap_entry *ke, |
385 | unsigned int *old_keycode) | |
ef53a115 | 386 | { |
d8b4b582 | 387 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 388 | struct rc_map *rc_map = &rdev->rc_map; |
9f470095 DT |
389 | unsigned int index; |
390 | unsigned int scancode; | |
dea8a39f | 391 | int retval = 0; |
9f470095 | 392 | unsigned long flags; |
ef53a115 | 393 | |
b088ba65 | 394 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
395 | |
396 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
397 | index = ke->index; | |
b088ba65 | 398 | if (index >= rc_map->len) { |
9f470095 DT |
399 | retval = -EINVAL; |
400 | goto out; | |
401 | } | |
402 | } else { | |
403 | retval = input_scancode_to_scalar(ke, &scancode); | |
404 | if (retval) | |
405 | goto out; | |
406 | ||
b088ba65 MCC |
407 | index = ir_establish_scancode(rdev, rc_map, scancode, true); |
408 | if (index >= rc_map->len) { | |
9f470095 DT |
409 | retval = -ENOMEM; |
410 | goto out; | |
411 | } | |
412 | } | |
413 | ||
b088ba65 | 414 | *old_keycode = ir_update_mapping(rdev, rc_map, index, ke->keycode); |
9f470095 DT |
415 | |
416 | out: | |
b088ba65 | 417 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 418 | return retval; |
e97f4677 MCC |
419 | } |
420 | ||
421 | /** | |
b3074c0a | 422 | * ir_setkeytable() - sets several entries in the scancode->keycode table |
d8b4b582 | 423 | * @dev: the struct rc_dev device descriptor |
b088ba65 MCC |
424 | * @to: the struct rc_map to copy entries to |
425 | * @from: the struct rc_map to copy entries from | |
9f470095 | 426 | * @return: -ENOMEM if all keycodes could not be inserted, otherwise zero. |
e97f4677 | 427 | * |
b3074c0a | 428 | * This routine is used to handle table initialization. |
e97f4677 | 429 | */ |
d8b4b582 | 430 | static int ir_setkeytable(struct rc_dev *dev, |
b088ba65 | 431 | const struct rc_map *from) |
e97f4677 | 432 | { |
b088ba65 | 433 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
434 | unsigned int i, index; |
435 | int rc; | |
436 | ||
b088ba65 | 437 | rc = ir_create_table(rc_map, from->name, |
6d741bfe | 438 | from->rc_proto, from->size); |
9f470095 DT |
439 | if (rc) |
440 | return rc; | |
441 | ||
442 | IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", | |
b088ba65 | 443 | rc_map->size, rc_map->alloc); |
e97f4677 | 444 | |
b3074c0a | 445 | for (i = 0; i < from->size; i++) { |
b088ba65 | 446 | index = ir_establish_scancode(dev, rc_map, |
9f470095 | 447 | from->scan[i].scancode, false); |
b088ba65 | 448 | if (index >= rc_map->len) { |
9f470095 | 449 | rc = -ENOMEM; |
b3074c0a | 450 | break; |
9f470095 DT |
451 | } |
452 | ||
b088ba65 | 453 | ir_update_mapping(dev, rc_map, index, |
9f470095 | 454 | from->scan[i].keycode); |
e97f4677 | 455 | } |
9f470095 DT |
456 | |
457 | if (rc) | |
b088ba65 | 458 | ir_free_table(rc_map); |
9f470095 | 459 | |
b3074c0a | 460 | return rc; |
ef53a115 MCC |
461 | } |
462 | ||
9f470095 DT |
463 | /** |
464 | * ir_lookup_by_scancode() - locate mapping by scancode | |
b088ba65 | 465 | * @rc_map: the struct rc_map to search |
9f470095 DT |
466 | * @scancode: scancode to look for in the table |
467 | * @return: index in the table, -1U if not found | |
468 | * | |
469 | * This routine performs binary search in RC keykeymap table for | |
470 | * given scancode. | |
471 | */ | |
b088ba65 | 472 | static unsigned int ir_lookup_by_scancode(const struct rc_map *rc_map, |
9f470095 DT |
473 | unsigned int scancode) |
474 | { | |
0d07025e | 475 | int start = 0; |
b088ba65 | 476 | int end = rc_map->len - 1; |
0d07025e | 477 | int mid; |
9f470095 DT |
478 | |
479 | while (start <= end) { | |
480 | mid = (start + end) / 2; | |
b088ba65 | 481 | if (rc_map->scan[mid].scancode < scancode) |
9f470095 | 482 | start = mid + 1; |
b088ba65 | 483 | else if (rc_map->scan[mid].scancode > scancode) |
9f470095 DT |
484 | end = mid - 1; |
485 | else | |
486 | return mid; | |
487 | } | |
488 | ||
489 | return -1U; | |
490 | } | |
491 | ||
ef53a115 | 492 | /** |
b3074c0a | 493 | * ir_getkeycode() - get a keycode from the scancode->keycode table |
d8b4b582 | 494 | * @idev: the struct input_dev device descriptor |
ef53a115 | 495 | * @scancode: the desired scancode |
b3074c0a DH |
496 | * @keycode: used to return the keycode, if found, or KEY_RESERVED |
497 | * @return: always returns zero. | |
ef53a115 | 498 | * |
b3074c0a | 499 | * This routine is used to handle evdev EVIOCGKEY ioctl. |
ef53a115 | 500 | */ |
d8b4b582 | 501 | static int ir_getkeycode(struct input_dev *idev, |
9f470095 | 502 | struct input_keymap_entry *ke) |
ef53a115 | 503 | { |
d8b4b582 | 504 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 505 | struct rc_map *rc_map = &rdev->rc_map; |
2f4f58d6 | 506 | struct rc_map_table *entry; |
9f470095 DT |
507 | unsigned long flags; |
508 | unsigned int index; | |
509 | unsigned int scancode; | |
510 | int retval; | |
ef53a115 | 511 | |
b088ba65 | 512 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
513 | |
514 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
515 | index = ke->index; | |
516 | } else { | |
517 | retval = input_scancode_to_scalar(ke, &scancode); | |
518 | if (retval) | |
519 | goto out; | |
520 | ||
b088ba65 | 521 | index = ir_lookup_by_scancode(rc_map, scancode); |
9f470095 DT |
522 | } |
523 | ||
54e74b87 DT |
524 | if (index < rc_map->len) { |
525 | entry = &rc_map->scan[index]; | |
526 | ||
527 | ke->index = index; | |
528 | ke->keycode = entry->keycode; | |
529 | ke->len = sizeof(entry->scancode); | |
530 | memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode)); | |
531 | ||
532 | } else if (!(ke->flags & INPUT_KEYMAP_BY_INDEX)) { | |
533 | /* | |
534 | * We do not really know the valid range of scancodes | |
535 | * so let's respond with KEY_RESERVED to anything we | |
536 | * do not have mapping for [yet]. | |
537 | */ | |
538 | ke->index = index; | |
539 | ke->keycode = KEY_RESERVED; | |
540 | } else { | |
9f470095 DT |
541 | retval = -EINVAL; |
542 | goto out; | |
e97f4677 MCC |
543 | } |
544 | ||
47c5ba53 DT |
545 | retval = 0; |
546 | ||
9f470095 | 547 | out: |
b088ba65 | 548 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 549 | return retval; |
ef53a115 MCC |
550 | } |
551 | ||
552 | /** | |
ca86674b | 553 | * rc_g_keycode_from_table() - gets the keycode that corresponds to a scancode |
d8b4b582 DH |
554 | * @dev: the struct rc_dev descriptor of the device |
555 | * @scancode: the scancode to look for | |
556 | * @return: the corresponding keycode, or KEY_RESERVED | |
ef53a115 | 557 | * |
d8b4b582 DH |
558 | * This routine is used by drivers which need to convert a scancode to a |
559 | * keycode. Normally it should not be used since drivers should have no | |
560 | * interest in keycodes. | |
ef53a115 | 561 | */ |
ca86674b | 562 | u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode) |
ef53a115 | 563 | { |
b088ba65 | 564 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
565 | unsigned int keycode; |
566 | unsigned int index; | |
567 | unsigned long flags; | |
568 | ||
b088ba65 | 569 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 | 570 | |
b088ba65 MCC |
571 | index = ir_lookup_by_scancode(rc_map, scancode); |
572 | keycode = index < rc_map->len ? | |
573 | rc_map->scan[index].keycode : KEY_RESERVED; | |
9f470095 | 574 | |
b088ba65 | 575 | spin_unlock_irqrestore(&rc_map->lock, flags); |
ef53a115 | 576 | |
35438946 MCC |
577 | if (keycode != KEY_RESERVED) |
578 | IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n", | |
518f4b26 | 579 | dev->device_name, scancode, keycode); |
9f470095 | 580 | |
b3074c0a | 581 | return keycode; |
ef53a115 | 582 | } |
ca86674b | 583 | EXPORT_SYMBOL_GPL(rc_g_keycode_from_table); |
ef53a115 | 584 | |
6660de56 | 585 | /** |
62c65031 | 586 | * ir_do_keyup() - internal function to signal the release of a keypress |
d8b4b582 | 587 | * @dev: the struct rc_dev descriptor of the device |
98c32bcd | 588 | * @sync: whether or not to call input_sync |
6660de56 | 589 | * |
62c65031 DH |
590 | * This function is used internally to release a keypress, it must be |
591 | * called with keylock held. | |
a374fef4 | 592 | */ |
98c32bcd | 593 | static void ir_do_keyup(struct rc_dev *dev, bool sync) |
a374fef4 | 594 | { |
d8b4b582 | 595 | if (!dev->keypressed) |
a374fef4 DH |
596 | return; |
597 | ||
d8b4b582 DH |
598 | IR_dprintk(1, "keyup key 0x%04x\n", dev->last_keycode); |
599 | input_report_key(dev->input_dev, dev->last_keycode, 0); | |
153a60bb | 600 | led_trigger_event(led_feedback, LED_OFF); |
98c32bcd JW |
601 | if (sync) |
602 | input_sync(dev->input_dev); | |
d8b4b582 | 603 | dev->keypressed = false; |
a374fef4 | 604 | } |
62c65031 DH |
605 | |
606 | /** | |
ca86674b | 607 | * rc_keyup() - signals the release of a keypress |
d8b4b582 | 608 | * @dev: the struct rc_dev descriptor of the device |
62c65031 DH |
609 | * |
610 | * This routine is used to signal that a key has been released on the | |
611 | * remote control. | |
612 | */ | |
ca86674b | 613 | void rc_keyup(struct rc_dev *dev) |
62c65031 DH |
614 | { |
615 | unsigned long flags; | |
62c65031 | 616 | |
d8b4b582 | 617 | spin_lock_irqsave(&dev->keylock, flags); |
98c32bcd | 618 | ir_do_keyup(dev, true); |
d8b4b582 | 619 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 620 | } |
ca86674b | 621 | EXPORT_SYMBOL_GPL(rc_keyup); |
a374fef4 DH |
622 | |
623 | /** | |
624 | * ir_timer_keyup() - generates a keyup event after a timeout | |
d8b4b582 | 625 | * @cookie: a pointer to the struct rc_dev for the device |
a374fef4 DH |
626 | * |
627 | * This routine will generate a keyup event some time after a keydown event | |
628 | * is generated when no further activity has been detected. | |
6660de56 | 629 | */ |
a374fef4 | 630 | static void ir_timer_keyup(unsigned long cookie) |
6660de56 | 631 | { |
d8b4b582 | 632 | struct rc_dev *dev = (struct rc_dev *)cookie; |
a374fef4 DH |
633 | unsigned long flags; |
634 | ||
635 | /* | |
636 | * ir->keyup_jiffies is used to prevent a race condition if a | |
637 | * hardware interrupt occurs at this point and the keyup timer | |
638 | * event is moved further into the future as a result. | |
639 | * | |
640 | * The timer will then be reactivated and this function called | |
641 | * again in the future. We need to exit gracefully in that case | |
642 | * to allow the input subsystem to do its auto-repeat magic or | |
643 | * a keyup event might follow immediately after the keydown. | |
644 | */ | |
d8b4b582 DH |
645 | spin_lock_irqsave(&dev->keylock, flags); |
646 | if (time_is_before_eq_jiffies(dev->keyup_jiffies)) | |
98c32bcd | 647 | ir_do_keyup(dev, true); |
d8b4b582 | 648 | spin_unlock_irqrestore(&dev->keylock, flags); |
a374fef4 DH |
649 | } |
650 | ||
651 | /** | |
ca86674b | 652 | * rc_repeat() - signals that a key is still pressed |
d8b4b582 | 653 | * @dev: the struct rc_dev descriptor of the device |
a374fef4 DH |
654 | * |
655 | * This routine is used by IR decoders when a repeat message which does | |
656 | * not include the necessary bits to reproduce the scancode has been | |
657 | * received. | |
658 | */ | |
ca86674b | 659 | void rc_repeat(struct rc_dev *dev) |
a374fef4 DH |
660 | { |
661 | unsigned long flags; | |
d57ea877 | 662 | unsigned int timeout = protocols[dev->last_protocol].repeat_period; |
6660de56 | 663 | |
d8b4b582 | 664 | spin_lock_irqsave(&dev->keylock, flags); |
a374fef4 | 665 | |
d8b4b582 | 666 | if (!dev->keypressed) |
a374fef4 | 667 | goto out; |
6660de56 | 668 | |
265a2988 DH |
669 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, dev->last_scancode); |
670 | input_sync(dev->input_dev); | |
671 | ||
d57ea877 | 672 | dev->keyup_jiffies = jiffies + msecs_to_jiffies(timeout); |
d8b4b582 | 673 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); |
a374fef4 DH |
674 | |
675 | out: | |
d8b4b582 | 676 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 677 | } |
ca86674b | 678 | EXPORT_SYMBOL_GPL(rc_repeat); |
6660de56 MCC |
679 | |
680 | /** | |
62c65031 | 681 | * ir_do_keydown() - internal function to process a keypress |
d8b4b582 | 682 | * @dev: the struct rc_dev descriptor of the device |
120703f9 | 683 | * @protocol: the protocol of the keypress |
62c65031 DH |
684 | * @scancode: the scancode of the keypress |
685 | * @keycode: the keycode of the keypress | |
686 | * @toggle: the toggle value of the keypress | |
6660de56 | 687 | * |
62c65031 DH |
688 | * This function is used internally to register a keypress, it must be |
689 | * called with keylock held. | |
6660de56 | 690 | */ |
6d741bfe | 691 | static void ir_do_keydown(struct rc_dev *dev, enum rc_proto protocol, |
120703f9 | 692 | u32 scancode, u32 keycode, u8 toggle) |
6660de56 | 693 | { |
99b0f3c9 | 694 | bool new_event = (!dev->keypressed || |
120703f9 | 695 | dev->last_protocol != protocol || |
99b0f3c9 | 696 | dev->last_scancode != scancode || |
120703f9 | 697 | dev->last_toggle != toggle); |
6660de56 | 698 | |
98c32bcd JW |
699 | if (new_event && dev->keypressed) |
700 | ir_do_keyup(dev, false); | |
6660de56 | 701 | |
98c32bcd | 702 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode); |
a374fef4 | 703 | |
98c32bcd JW |
704 | if (new_event && keycode != KEY_RESERVED) { |
705 | /* Register a keypress */ | |
706 | dev->keypressed = true; | |
120703f9 | 707 | dev->last_protocol = protocol; |
98c32bcd JW |
708 | dev->last_scancode = scancode; |
709 | dev->last_toggle = toggle; | |
710 | dev->last_keycode = keycode; | |
711 | ||
25ec587c | 712 | IR_dprintk(1, "%s: key down event, key 0x%04x, protocol 0x%04x, scancode 0x%08x\n", |
518f4b26 | 713 | dev->device_name, keycode, protocol, scancode); |
98c32bcd | 714 | input_report_key(dev->input_dev, keycode, 1); |
70a2f912 JH |
715 | |
716 | led_trigger_event(led_feedback, LED_FULL); | |
98c32bcd | 717 | } |
ed4d3876 | 718 | |
d8b4b582 | 719 | input_sync(dev->input_dev); |
62c65031 | 720 | } |
6660de56 | 721 | |
62c65031 | 722 | /** |
ca86674b | 723 | * rc_keydown() - generates input event for a key press |
d8b4b582 | 724 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
725 | * @protocol: the protocol for the keypress |
726 | * @scancode: the scancode for the keypress | |
62c65031 DH |
727 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
728 | * support toggle values, this should be set to zero) | |
729 | * | |
d8b4b582 DH |
730 | * This routine is used to signal that a key has been pressed on the |
731 | * remote control. | |
62c65031 | 732 | */ |
6d741bfe SY |
733 | void rc_keydown(struct rc_dev *dev, enum rc_proto protocol, u32 scancode, |
734 | u8 toggle) | |
62c65031 DH |
735 | { |
736 | unsigned long flags; | |
ca86674b | 737 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 738 | |
d8b4b582 | 739 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 740 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
62c65031 | 741 | |
d8b4b582 | 742 | if (dev->keypressed) { |
d57ea877 SY |
743 | dev->keyup_jiffies = jiffies + |
744 | msecs_to_jiffies(protocols[protocol].repeat_period); | |
d8b4b582 | 745 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); |
62c65031 | 746 | } |
d8b4b582 | 747 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 748 | } |
ca86674b | 749 | EXPORT_SYMBOL_GPL(rc_keydown); |
6660de56 | 750 | |
62c65031 | 751 | /** |
ca86674b | 752 | * rc_keydown_notimeout() - generates input event for a key press without |
62c65031 | 753 | * an automatic keyup event at a later time |
d8b4b582 | 754 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
755 | * @protocol: the protocol for the keypress |
756 | * @scancode: the scancode for the keypress | |
62c65031 DH |
757 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
758 | * support toggle values, this should be set to zero) | |
759 | * | |
d8b4b582 | 760 | * This routine is used to signal that a key has been pressed on the |
ca86674b | 761 | * remote control. The driver must manually call rc_keyup() at a later stage. |
62c65031 | 762 | */ |
6d741bfe | 763 | void rc_keydown_notimeout(struct rc_dev *dev, enum rc_proto protocol, |
120703f9 | 764 | u32 scancode, u8 toggle) |
62c65031 DH |
765 | { |
766 | unsigned long flags; | |
ca86674b | 767 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 768 | |
d8b4b582 | 769 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 770 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
d8b4b582 | 771 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 772 | } |
ca86674b | 773 | EXPORT_SYMBOL_GPL(rc_keydown_notimeout); |
62c65031 | 774 | |
b590c0bf SY |
775 | /** |
776 | * rc_validate_filter() - checks that the scancode and mask are valid and | |
777 | * provides sensible defaults | |
f423ccc1 | 778 | * @dev: the struct rc_dev descriptor of the device |
b590c0bf SY |
779 | * @filter: the scancode and mask |
780 | * @return: 0 or -EINVAL if the filter is not valid | |
781 | */ | |
f423ccc1 | 782 | static int rc_validate_filter(struct rc_dev *dev, |
b590c0bf SY |
783 | struct rc_scancode_filter *filter) |
784 | { | |
d57ea877 | 785 | u32 mask, s = filter->data; |
6d741bfe | 786 | enum rc_proto protocol = dev->wakeup_protocol; |
b590c0bf | 787 | |
d57ea877 | 788 | if (protocol >= ARRAY_SIZE(protocols)) |
2168b416 SY |
789 | return -EINVAL; |
790 | ||
d57ea877 SY |
791 | mask = protocols[protocol].scancode_bits; |
792 | ||
b590c0bf | 793 | switch (protocol) { |
6d741bfe | 794 | case RC_PROTO_NECX: |
b590c0bf SY |
795 | if ((((s >> 16) ^ ~(s >> 8)) & 0xff) == 0) |
796 | return -EINVAL; | |
797 | break; | |
6d741bfe | 798 | case RC_PROTO_NEC32: |
b590c0bf SY |
799 | if ((((s >> 24) ^ ~(s >> 16)) & 0xff) == 0) |
800 | return -EINVAL; | |
801 | break; | |
6d741bfe | 802 | case RC_PROTO_RC6_MCE: |
b590c0bf SY |
803 | if ((s & 0xffff0000) != 0x800f0000) |
804 | return -EINVAL; | |
805 | break; | |
6d741bfe | 806 | case RC_PROTO_RC6_6A_32: |
b590c0bf SY |
807 | if ((s & 0xffff0000) == 0x800f0000) |
808 | return -EINVAL; | |
809 | break; | |
810 | default: | |
811 | break; | |
812 | } | |
813 | ||
d57ea877 SY |
814 | filter->data &= mask; |
815 | filter->mask &= mask; | |
b590c0bf | 816 | |
f423ccc1 JH |
817 | /* |
818 | * If we have to raw encode the IR for wakeup, we cannot have a mask | |
819 | */ | |
d57ea877 | 820 | if (dev->encode_wakeup && filter->mask != 0 && filter->mask != mask) |
f423ccc1 JH |
821 | return -EINVAL; |
822 | ||
b590c0bf SY |
823 | return 0; |
824 | } | |
825 | ||
8b2ff320 SK |
826 | int rc_open(struct rc_dev *rdev) |
827 | { | |
828 | int rval = 0; | |
829 | ||
830 | if (!rdev) | |
831 | return -EINVAL; | |
832 | ||
833 | mutex_lock(&rdev->lock); | |
c73bbaa4 | 834 | |
f02dcdd1 | 835 | if (!rdev->users++ && rdev->open != NULL) |
8b2ff320 SK |
836 | rval = rdev->open(rdev); |
837 | ||
838 | if (rval) | |
839 | rdev->users--; | |
840 | ||
841 | mutex_unlock(&rdev->lock); | |
842 | ||
843 | return rval; | |
844 | } | |
845 | EXPORT_SYMBOL_GPL(rc_open); | |
846 | ||
d8b4b582 | 847 | static int ir_open(struct input_dev *idev) |
ef53a115 | 848 | { |
d8b4b582 | 849 | struct rc_dev *rdev = input_get_drvdata(idev); |
75543cce | 850 | |
8b2ff320 SK |
851 | return rc_open(rdev); |
852 | } | |
853 | ||
854 | void rc_close(struct rc_dev *rdev) | |
855 | { | |
856 | if (rdev) { | |
857 | mutex_lock(&rdev->lock); | |
858 | ||
81b7d14e | 859 | if (!--rdev->users && rdev->close != NULL) |
8b2ff320 SK |
860 | rdev->close(rdev); |
861 | ||
862 | mutex_unlock(&rdev->lock); | |
863 | } | |
ef53a115 | 864 | } |
8b2ff320 | 865 | EXPORT_SYMBOL_GPL(rc_close); |
d4b778d3 | 866 | |
d8b4b582 | 867 | static void ir_close(struct input_dev *idev) |
f6fc5049 | 868 | { |
d8b4b582 | 869 | struct rc_dev *rdev = input_get_drvdata(idev); |
8b2ff320 | 870 | rc_close(rdev); |
f6fc5049 | 871 | } |
f6fc5049 | 872 | |
bc2a6c57 | 873 | /* class for /sys/class/rc */ |
40fc5325 | 874 | static char *rc_devnode(struct device *dev, umode_t *mode) |
bc2a6c57 MCC |
875 | { |
876 | return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); | |
877 | } | |
878 | ||
40fc5325 | 879 | static struct class rc_class = { |
bc2a6c57 | 880 | .name = "rc", |
40fc5325 | 881 | .devnode = rc_devnode, |
bc2a6c57 MCC |
882 | }; |
883 | ||
c003ab1b DH |
884 | /* |
885 | * These are the protocol textual descriptions that are | |
886 | * used by the sysfs protocols file. Note that the order | |
887 | * of the entries is relevant. | |
888 | */ | |
53df8777 | 889 | static const struct { |
bc2a6c57 | 890 | u64 type; |
53df8777 | 891 | const char *name; |
9f0bf366 | 892 | const char *module_name; |
bc2a6c57 | 893 | } proto_names[] = { |
6d741bfe SY |
894 | { RC_PROTO_BIT_NONE, "none", NULL }, |
895 | { RC_PROTO_BIT_OTHER, "other", NULL }, | |
896 | { RC_PROTO_BIT_UNKNOWN, "unknown", NULL }, | |
897 | { RC_PROTO_BIT_RC5 | | |
898 | RC_PROTO_BIT_RC5X_20, "rc-5", "ir-rc5-decoder" }, | |
899 | { RC_PROTO_BIT_NEC | | |
900 | RC_PROTO_BIT_NECX | | |
901 | RC_PROTO_BIT_NEC32, "nec", "ir-nec-decoder" }, | |
902 | { RC_PROTO_BIT_RC6_0 | | |
903 | RC_PROTO_BIT_RC6_6A_20 | | |
904 | RC_PROTO_BIT_RC6_6A_24 | | |
905 | RC_PROTO_BIT_RC6_6A_32 | | |
906 | RC_PROTO_BIT_RC6_MCE, "rc-6", "ir-rc6-decoder" }, | |
907 | { RC_PROTO_BIT_JVC, "jvc", "ir-jvc-decoder" }, | |
908 | { RC_PROTO_BIT_SONY12 | | |
909 | RC_PROTO_BIT_SONY15 | | |
910 | RC_PROTO_BIT_SONY20, "sony", "ir-sony-decoder" }, | |
911 | { RC_PROTO_BIT_RC5_SZ, "rc-5-sz", "ir-rc5-decoder" }, | |
912 | { RC_PROTO_BIT_SANYO, "sanyo", "ir-sanyo-decoder" }, | |
913 | { RC_PROTO_BIT_SHARP, "sharp", "ir-sharp-decoder" }, | |
914 | { RC_PROTO_BIT_MCIR2_KBD | | |
915 | RC_PROTO_BIT_MCIR2_MSE, "mce_kbd", "ir-mce_kbd-decoder" }, | |
916 | { RC_PROTO_BIT_XMP, "xmp", "ir-xmp-decoder" }, | |
917 | { RC_PROTO_BIT_CEC, "cec", NULL }, | |
bc2a6c57 MCC |
918 | }; |
919 | ||
bc2a6c57 | 920 | /** |
ab88c66d JH |
921 | * struct rc_filter_attribute - Device attribute relating to a filter type. |
922 | * @attr: Device attribute. | |
923 | * @type: Filter type. | |
924 | * @mask: false for filter value, true for filter mask. | |
925 | */ | |
926 | struct rc_filter_attribute { | |
927 | struct device_attribute attr; | |
928 | enum rc_filter_type type; | |
929 | bool mask; | |
930 | }; | |
931 | #define to_rc_filter_attr(a) container_of(a, struct rc_filter_attribute, attr) | |
932 | ||
ab88c66d JH |
933 | #define RC_FILTER_ATTR(_name, _mode, _show, _store, _type, _mask) \ |
934 | struct rc_filter_attribute dev_attr_##_name = { \ | |
935 | .attr = __ATTR(_name, _mode, _show, _store), \ | |
936 | .type = (_type), \ | |
937 | .mask = (_mask), \ | |
938 | } | |
939 | ||
dd6ff6a0 DH |
940 | static bool lirc_is_present(void) |
941 | { | |
942 | #if defined(CONFIG_LIRC_MODULE) | |
943 | struct module *lirc; | |
944 | ||
945 | mutex_lock(&module_mutex); | |
946 | lirc = find_module("lirc_dev"); | |
947 | mutex_unlock(&module_mutex); | |
948 | ||
949 | return lirc ? true : false; | |
950 | #elif defined(CONFIG_LIRC) | |
951 | return true; | |
952 | #else | |
953 | return false; | |
954 | #endif | |
955 | } | |
956 | ||
ab88c66d | 957 | /** |
0751d33c | 958 | * show_protocols() - shows the current IR protocol(s) |
d8b4b582 | 959 | * @device: the device descriptor |
da6e162d | 960 | * @mattr: the device attribute struct |
bc2a6c57 MCC |
961 | * @buf: a pointer to the output buffer |
962 | * | |
963 | * This routine is a callback routine for input read the IR protocol type(s). | |
0751d33c | 964 | * it is trigged by reading /sys/class/rc/rc?/protocols. |
bc2a6c57 MCC |
965 | * It returns the protocol names of supported protocols. |
966 | * Enabled protocols are printed in brackets. | |
08aeb7c9 | 967 | * |
18726a34 DH |
968 | * dev->lock is taken to guard against races between |
969 | * store_protocols and show_protocols. | |
bc2a6c57 | 970 | */ |
d8b4b582 | 971 | static ssize_t show_protocols(struct device *device, |
bc2a6c57 MCC |
972 | struct device_attribute *mattr, char *buf) |
973 | { | |
d8b4b582 | 974 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 MCC |
975 | u64 allowed, enabled; |
976 | char *tmp = buf; | |
977 | int i; | |
978 | ||
08aeb7c9 JW |
979 | mutex_lock(&dev->lock); |
980 | ||
0751d33c SY |
981 | enabled = dev->enabled_protocols; |
982 | allowed = dev->allowed_protocols; | |
983 | if (dev->raw && !allowed) | |
984 | allowed = ir_raw_get_allowed_protocols(); | |
bc2a6c57 | 985 | |
da6e162d DH |
986 | mutex_unlock(&dev->lock); |
987 | ||
988 | IR_dprintk(1, "%s: allowed - 0x%llx, enabled - 0x%llx\n", | |
989 | __func__, (long long)allowed, (long long)enabled); | |
bc2a6c57 MCC |
990 | |
991 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
992 | if (allowed & enabled & proto_names[i].type) | |
993 | tmp += sprintf(tmp, "[%s] ", proto_names[i].name); | |
994 | else if (allowed & proto_names[i].type) | |
995 | tmp += sprintf(tmp, "%s ", proto_names[i].name); | |
c003ab1b DH |
996 | |
997 | if (allowed & proto_names[i].type) | |
998 | allowed &= ~proto_names[i].type; | |
bc2a6c57 MCC |
999 | } |
1000 | ||
dd6ff6a0 | 1001 | if (dev->driver_type == RC_DRIVER_IR_RAW && lirc_is_present()) |
275ddb40 DH |
1002 | tmp += sprintf(tmp, "[lirc] "); |
1003 | ||
bc2a6c57 MCC |
1004 | if (tmp != buf) |
1005 | tmp--; | |
1006 | *tmp = '\n'; | |
08aeb7c9 | 1007 | |
bc2a6c57 MCC |
1008 | return tmp + 1 - buf; |
1009 | } | |
1010 | ||
1011 | /** | |
da6e162d DH |
1012 | * parse_protocol_change() - parses a protocol change request |
1013 | * @protocols: pointer to the bitmask of current protocols | |
1014 | * @buf: pointer to the buffer with a list of changes | |
bc2a6c57 | 1015 | * |
da6e162d DH |
1016 | * Writing "+proto" will add a protocol to the protocol mask. |
1017 | * Writing "-proto" will remove a protocol from protocol mask. | |
bc2a6c57 MCC |
1018 | * Writing "proto" will enable only "proto". |
1019 | * Writing "none" will disable all protocols. | |
da6e162d | 1020 | * Returns the number of changes performed or a negative error code. |
bc2a6c57 | 1021 | */ |
da6e162d | 1022 | static int parse_protocol_change(u64 *protocols, const char *buf) |
bc2a6c57 | 1023 | { |
bc2a6c57 | 1024 | const char *tmp; |
da6e162d DH |
1025 | unsigned count = 0; |
1026 | bool enable, disable; | |
bc2a6c57 | 1027 | u64 mask; |
da6e162d | 1028 | int i; |
bc2a6c57 | 1029 | |
da6e162d | 1030 | while ((tmp = strsep((char **)&buf, " \n")) != NULL) { |
bc2a6c57 MCC |
1031 | if (!*tmp) |
1032 | break; | |
1033 | ||
1034 | if (*tmp == '+') { | |
1035 | enable = true; | |
1036 | disable = false; | |
1037 | tmp++; | |
1038 | } else if (*tmp == '-') { | |
1039 | enable = false; | |
1040 | disable = true; | |
1041 | tmp++; | |
1042 | } else { | |
1043 | enable = false; | |
1044 | disable = false; | |
1045 | } | |
1046 | ||
c003ab1b DH |
1047 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { |
1048 | if (!strcasecmp(tmp, proto_names[i].name)) { | |
1049 | mask = proto_names[i].type; | |
1050 | break; | |
bc2a6c57 | 1051 | } |
bc2a6c57 MCC |
1052 | } |
1053 | ||
c003ab1b | 1054 | if (i == ARRAY_SIZE(proto_names)) { |
275ddb40 DH |
1055 | if (!strcasecmp(tmp, "lirc")) |
1056 | mask = 0; | |
1057 | else { | |
1058 | IR_dprintk(1, "Unknown protocol: '%s'\n", tmp); | |
1059 | return -EINVAL; | |
1060 | } | |
c003ab1b DH |
1061 | } |
1062 | ||
1063 | count++; | |
1064 | ||
bc2a6c57 | 1065 | if (enable) |
da6e162d | 1066 | *protocols |= mask; |
bc2a6c57 | 1067 | else if (disable) |
da6e162d | 1068 | *protocols &= ~mask; |
bc2a6c57 | 1069 | else |
da6e162d | 1070 | *protocols = mask; |
bc2a6c57 MCC |
1071 | } |
1072 | ||
1073 | if (!count) { | |
1074 | IR_dprintk(1, "Protocol not specified\n"); | |
da6e162d DH |
1075 | return -EINVAL; |
1076 | } | |
1077 | ||
1078 | return count; | |
1079 | } | |
1080 | ||
9f0bf366 | 1081 | static void ir_raw_load_modules(u64 *protocols) |
9f0bf366 HK |
1082 | { |
1083 | u64 available; | |
1084 | int i, ret; | |
1085 | ||
1086 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
6d741bfe SY |
1087 | if (proto_names[i].type == RC_PROTO_BIT_NONE || |
1088 | proto_names[i].type & (RC_PROTO_BIT_OTHER | | |
1089 | RC_PROTO_BIT_UNKNOWN)) | |
9f0bf366 HK |
1090 | continue; |
1091 | ||
1092 | available = ir_raw_get_allowed_protocols(); | |
1093 | if (!(*protocols & proto_names[i].type & ~available)) | |
1094 | continue; | |
1095 | ||
1096 | if (!proto_names[i].module_name) { | |
1097 | pr_err("Can't enable IR protocol %s\n", | |
1098 | proto_names[i].name); | |
1099 | *protocols &= ~proto_names[i].type; | |
1100 | continue; | |
1101 | } | |
1102 | ||
1103 | ret = request_module("%s", proto_names[i].module_name); | |
1104 | if (ret < 0) { | |
1105 | pr_err("Couldn't load IR protocol module %s\n", | |
1106 | proto_names[i].module_name); | |
1107 | *protocols &= ~proto_names[i].type; | |
1108 | continue; | |
1109 | } | |
1110 | msleep(20); | |
1111 | available = ir_raw_get_allowed_protocols(); | |
1112 | if (!(*protocols & proto_names[i].type & ~available)) | |
1113 | continue; | |
1114 | ||
8caebcdc | 1115 | pr_err("Loaded IR protocol module %s, but protocol %s still not available\n", |
9f0bf366 HK |
1116 | proto_names[i].module_name, |
1117 | proto_names[i].name); | |
1118 | *protocols &= ~proto_names[i].type; | |
1119 | } | |
1120 | } | |
1121 | ||
da6e162d DH |
1122 | /** |
1123 | * store_protocols() - changes the current/wakeup IR protocol(s) | |
1124 | * @device: the device descriptor | |
1125 | * @mattr: the device attribute struct | |
1126 | * @buf: a pointer to the input buffer | |
1127 | * @len: length of the input buffer | |
1128 | * | |
1129 | * This routine is for changing the IR protocol type. | |
1130 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]protocols. | |
1131 | * See parse_protocol_change() for the valid commands. | |
1132 | * Returns @len on success or a negative error code. | |
1133 | * | |
18726a34 DH |
1134 | * dev->lock is taken to guard against races between |
1135 | * store_protocols and show_protocols. | |
da6e162d DH |
1136 | */ |
1137 | static ssize_t store_protocols(struct device *device, | |
1138 | struct device_attribute *mattr, | |
1139 | const char *buf, size_t len) | |
1140 | { | |
1141 | struct rc_dev *dev = to_rc_dev(device); | |
da6e162d | 1142 | u64 *current_protocols; |
da6e162d | 1143 | struct rc_scancode_filter *filter; |
da6e162d DH |
1144 | u64 old_protocols, new_protocols; |
1145 | ssize_t rc; | |
1146 | ||
0751d33c SY |
1147 | IR_dprintk(1, "Normal protocol change requested\n"); |
1148 | current_protocols = &dev->enabled_protocols; | |
1149 | filter = &dev->scancode_filter; | |
da6e162d | 1150 | |
0751d33c | 1151 | if (!dev->change_protocol) { |
da6e162d DH |
1152 | IR_dprintk(1, "Protocol switching not supported\n"); |
1153 | return -EINVAL; | |
1154 | } | |
1155 | ||
1156 | mutex_lock(&dev->lock); | |
1157 | ||
1158 | old_protocols = *current_protocols; | |
1159 | new_protocols = old_protocols; | |
1160 | rc = parse_protocol_change(&new_protocols, buf); | |
1161 | if (rc < 0) | |
1162 | goto out; | |
1163 | ||
0751d33c | 1164 | rc = dev->change_protocol(dev, &new_protocols); |
da6e162d DH |
1165 | if (rc < 0) { |
1166 | IR_dprintk(1, "Error setting protocols to 0x%llx\n", | |
1167 | (long long)new_protocols); | |
08aeb7c9 | 1168 | goto out; |
bc2a6c57 MCC |
1169 | } |
1170 | ||
9f0bf366 HK |
1171 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1172 | ir_raw_load_modules(&new_protocols); | |
1173 | ||
983c5bd2 JH |
1174 | if (new_protocols != old_protocols) { |
1175 | *current_protocols = new_protocols; | |
1176 | IR_dprintk(1, "Protocols changed to 0x%llx\n", | |
1177 | (long long)new_protocols); | |
bc2a6c57 MCC |
1178 | } |
1179 | ||
6bea25af | 1180 | /* |
983c5bd2 JH |
1181 | * If a protocol change was attempted the filter may need updating, even |
1182 | * if the actual protocol mask hasn't changed (since the driver may have | |
1183 | * cleared the filter). | |
6bea25af JH |
1184 | * Try setting the same filter with the new protocol (if any). |
1185 | * Fall back to clearing the filter. | |
1186 | */ | |
0751d33c | 1187 | if (dev->s_filter && filter->mask) { |
da6e162d | 1188 | if (new_protocols) |
0751d33c | 1189 | rc = dev->s_filter(dev, filter); |
da6e162d DH |
1190 | else |
1191 | rc = -1; | |
6bea25af | 1192 | |
da6e162d DH |
1193 | if (rc < 0) { |
1194 | filter->data = 0; | |
1195 | filter->mask = 0; | |
0751d33c | 1196 | dev->s_filter(dev, filter); |
da6e162d | 1197 | } |
6bea25af JH |
1198 | } |
1199 | ||
da6e162d | 1200 | rc = len; |
08aeb7c9 JW |
1201 | |
1202 | out: | |
1203 | mutex_unlock(&dev->lock); | |
da6e162d | 1204 | return rc; |
bc2a6c57 MCC |
1205 | } |
1206 | ||
00942d1a JH |
1207 | /** |
1208 | * show_filter() - shows the current scancode filter value or mask | |
1209 | * @device: the device descriptor | |
1210 | * @attr: the device attribute struct | |
1211 | * @buf: a pointer to the output buffer | |
1212 | * | |
1213 | * This routine is a callback routine to read a scancode filter value or mask. | |
1214 | * It is trigged by reading /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1215 | * It prints the current scancode filter value or mask of the appropriate filter | |
1216 | * type in hexadecimal into @buf and returns the size of the buffer. | |
1217 | * | |
1218 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1219 | * compared against input scancodes and non-matching scancodes are discarded. | |
1220 | * | |
18726a34 | 1221 | * dev->lock is taken to guard against races between |
00942d1a JH |
1222 | * store_filter and show_filter. |
1223 | */ | |
1224 | static ssize_t show_filter(struct device *device, | |
1225 | struct device_attribute *attr, | |
1226 | char *buf) | |
1227 | { | |
1228 | struct rc_dev *dev = to_rc_dev(device); | |
1229 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1230 | struct rc_scancode_filter *filter; |
00942d1a JH |
1231 | u32 val; |
1232 | ||
c73bbaa4 | 1233 | mutex_lock(&dev->lock); |
c73bbaa4 | 1234 | |
da6e162d | 1235 | if (fattr->type == RC_FILTER_NORMAL) |
c5540fbb | 1236 | filter = &dev->scancode_filter; |
da6e162d | 1237 | else |
c5540fbb | 1238 | filter = &dev->scancode_wakeup_filter; |
da6e162d | 1239 | |
da6e162d DH |
1240 | if (fattr->mask) |
1241 | val = filter->mask; | |
00942d1a | 1242 | else |
da6e162d | 1243 | val = filter->data; |
00942d1a JH |
1244 | mutex_unlock(&dev->lock); |
1245 | ||
1246 | return sprintf(buf, "%#x\n", val); | |
1247 | } | |
1248 | ||
1249 | /** | |
1250 | * store_filter() - changes the scancode filter value | |
1251 | * @device: the device descriptor | |
1252 | * @attr: the device attribute struct | |
1253 | * @buf: a pointer to the input buffer | |
1254 | * @len: length of the input buffer | |
1255 | * | |
1256 | * This routine is for changing a scancode filter value or mask. | |
1257 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1258 | * Returns -EINVAL if an invalid filter value for the current protocol was | |
1259 | * specified or if scancode filtering is not supported by the driver, otherwise | |
1260 | * returns @len. | |
1261 | * | |
1262 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1263 | * compared against input scancodes and non-matching scancodes are discarded. | |
1264 | * | |
18726a34 | 1265 | * dev->lock is taken to guard against races between |
00942d1a JH |
1266 | * store_filter and show_filter. |
1267 | */ | |
1268 | static ssize_t store_filter(struct device *device, | |
1269 | struct device_attribute *attr, | |
da6e162d | 1270 | const char *buf, size_t len) |
00942d1a JH |
1271 | { |
1272 | struct rc_dev *dev = to_rc_dev(device); | |
1273 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1274 | struct rc_scancode_filter new_filter, *filter; |
00942d1a JH |
1275 | int ret; |
1276 | unsigned long val; | |
23c843b5 | 1277 | int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter); |
00942d1a | 1278 | |
00942d1a JH |
1279 | ret = kstrtoul(buf, 0, &val); |
1280 | if (ret < 0) | |
1281 | return ret; | |
1282 | ||
da6e162d DH |
1283 | if (fattr->type == RC_FILTER_NORMAL) { |
1284 | set_filter = dev->s_filter; | |
c5540fbb | 1285 | filter = &dev->scancode_filter; |
da6e162d DH |
1286 | } else { |
1287 | set_filter = dev->s_wakeup_filter; | |
c5540fbb | 1288 | filter = &dev->scancode_wakeup_filter; |
da6e162d DH |
1289 | } |
1290 | ||
99b0f3c9 DH |
1291 | if (!set_filter) |
1292 | return -EINVAL; | |
00942d1a JH |
1293 | |
1294 | mutex_lock(&dev->lock); | |
1295 | ||
da6e162d | 1296 | new_filter = *filter; |
00942d1a | 1297 | if (fattr->mask) |
da6e162d | 1298 | new_filter.mask = val; |
00942d1a | 1299 | else |
da6e162d | 1300 | new_filter.data = val; |
23c843b5 | 1301 | |
0751d33c | 1302 | if (fattr->type == RC_FILTER_WAKEUP) { |
b590c0bf SY |
1303 | /* |
1304 | * Refuse to set a filter unless a protocol is enabled | |
1305 | * and the filter is valid for that protocol | |
1306 | */ | |
6d741bfe | 1307 | if (dev->wakeup_protocol != RC_PROTO_UNKNOWN) |
f423ccc1 | 1308 | ret = rc_validate_filter(dev, &new_filter); |
b590c0bf | 1309 | else |
0751d33c | 1310 | ret = -EINVAL; |
b590c0bf SY |
1311 | |
1312 | if (ret != 0) | |
0751d33c | 1313 | goto unlock; |
0751d33c SY |
1314 | } |
1315 | ||
1316 | if (fattr->type == RC_FILTER_NORMAL && !dev->enabled_protocols && | |
1317 | val) { | |
6bea25af JH |
1318 | /* refuse to set a filter unless a protocol is enabled */ |
1319 | ret = -EINVAL; | |
1320 | goto unlock; | |
1321 | } | |
23c843b5 | 1322 | |
da6e162d | 1323 | ret = set_filter(dev, &new_filter); |
99b0f3c9 DH |
1324 | if (ret < 0) |
1325 | goto unlock; | |
00942d1a | 1326 | |
da6e162d | 1327 | *filter = new_filter; |
00942d1a JH |
1328 | |
1329 | unlock: | |
1330 | mutex_unlock(&dev->lock); | |
da6e162d | 1331 | return (ret < 0) ? ret : len; |
00942d1a JH |
1332 | } |
1333 | ||
0751d33c SY |
1334 | /** |
1335 | * show_wakeup_protocols() - shows the wakeup IR protocol | |
1336 | * @device: the device descriptor | |
1337 | * @mattr: the device attribute struct | |
1338 | * @buf: a pointer to the output buffer | |
1339 | * | |
1340 | * This routine is a callback routine for input read the IR protocol type(s). | |
1341 | * it is trigged by reading /sys/class/rc/rc?/wakeup_protocols. | |
1342 | * It returns the protocol names of supported protocols. | |
1343 | * The enabled protocols are printed in brackets. | |
1344 | * | |
18726a34 DH |
1345 | * dev->lock is taken to guard against races between |
1346 | * store_wakeup_protocols and show_wakeup_protocols. | |
0751d33c SY |
1347 | */ |
1348 | static ssize_t show_wakeup_protocols(struct device *device, | |
1349 | struct device_attribute *mattr, | |
1350 | char *buf) | |
1351 | { | |
1352 | struct rc_dev *dev = to_rc_dev(device); | |
1353 | u64 allowed; | |
6d741bfe | 1354 | enum rc_proto enabled; |
0751d33c SY |
1355 | char *tmp = buf; |
1356 | int i; | |
1357 | ||
0751d33c SY |
1358 | mutex_lock(&dev->lock); |
1359 | ||
1360 | allowed = dev->allowed_wakeup_protocols; | |
1361 | enabled = dev->wakeup_protocol; | |
1362 | ||
1363 | mutex_unlock(&dev->lock); | |
1364 | ||
1365 | IR_dprintk(1, "%s: allowed - 0x%llx, enabled - %d\n", | |
1366 | __func__, (long long)allowed, enabled); | |
1367 | ||
d57ea877 | 1368 | for (i = 0; i < ARRAY_SIZE(protocols); i++) { |
0751d33c SY |
1369 | if (allowed & (1ULL << i)) { |
1370 | if (i == enabled) | |
d57ea877 | 1371 | tmp += sprintf(tmp, "[%s] ", protocols[i].name); |
0751d33c | 1372 | else |
d57ea877 | 1373 | tmp += sprintf(tmp, "%s ", protocols[i].name); |
0751d33c SY |
1374 | } |
1375 | } | |
1376 | ||
1377 | if (tmp != buf) | |
1378 | tmp--; | |
1379 | *tmp = '\n'; | |
1380 | ||
1381 | return tmp + 1 - buf; | |
1382 | } | |
1383 | ||
1384 | /** | |
1385 | * store_wakeup_protocols() - changes the wakeup IR protocol(s) | |
1386 | * @device: the device descriptor | |
1387 | * @mattr: the device attribute struct | |
1388 | * @buf: a pointer to the input buffer | |
1389 | * @len: length of the input buffer | |
1390 | * | |
1391 | * This routine is for changing the IR protocol type. | |
1392 | * It is trigged by writing to /sys/class/rc/rc?/wakeup_protocols. | |
1393 | * Returns @len on success or a negative error code. | |
1394 | * | |
18726a34 DH |
1395 | * dev->lock is taken to guard against races between |
1396 | * store_wakeup_protocols and show_wakeup_protocols. | |
0751d33c SY |
1397 | */ |
1398 | static ssize_t store_wakeup_protocols(struct device *device, | |
1399 | struct device_attribute *mattr, | |
1400 | const char *buf, size_t len) | |
1401 | { | |
1402 | struct rc_dev *dev = to_rc_dev(device); | |
6d741bfe | 1403 | enum rc_proto protocol; |
0751d33c SY |
1404 | ssize_t rc; |
1405 | u64 allowed; | |
1406 | int i; | |
1407 | ||
0751d33c SY |
1408 | mutex_lock(&dev->lock); |
1409 | ||
1410 | allowed = dev->allowed_wakeup_protocols; | |
1411 | ||
1412 | if (sysfs_streq(buf, "none")) { | |
6d741bfe | 1413 | protocol = RC_PROTO_UNKNOWN; |
0751d33c | 1414 | } else { |
d57ea877 | 1415 | for (i = 0; i < ARRAY_SIZE(protocols); i++) { |
0751d33c | 1416 | if ((allowed & (1ULL << i)) && |
d57ea877 | 1417 | sysfs_streq(buf, protocols[i].name)) { |
0751d33c SY |
1418 | protocol = i; |
1419 | break; | |
1420 | } | |
1421 | } | |
1422 | ||
d57ea877 | 1423 | if (i == ARRAY_SIZE(protocols)) { |
0751d33c SY |
1424 | rc = -EINVAL; |
1425 | goto out; | |
1426 | } | |
f423ccc1 JH |
1427 | |
1428 | if (dev->encode_wakeup) { | |
1429 | u64 mask = 1ULL << protocol; | |
1430 | ||
1431 | ir_raw_load_modules(&mask); | |
1432 | if (!mask) { | |
1433 | rc = -EINVAL; | |
1434 | goto out; | |
1435 | } | |
1436 | } | |
0751d33c SY |
1437 | } |
1438 | ||
1439 | if (dev->wakeup_protocol != protocol) { | |
1440 | dev->wakeup_protocol = protocol; | |
1441 | IR_dprintk(1, "Wakeup protocol changed to %d\n", protocol); | |
1442 | ||
6d741bfe | 1443 | if (protocol == RC_PROTO_RC6_MCE) |
0751d33c SY |
1444 | dev->scancode_wakeup_filter.data = 0x800f0000; |
1445 | else | |
1446 | dev->scancode_wakeup_filter.data = 0; | |
1447 | dev->scancode_wakeup_filter.mask = 0; | |
1448 | ||
1449 | rc = dev->s_wakeup_filter(dev, &dev->scancode_wakeup_filter); | |
1450 | if (rc == 0) | |
1451 | rc = len; | |
1452 | } else { | |
1453 | rc = len; | |
1454 | } | |
1455 | ||
1456 | out: | |
1457 | mutex_unlock(&dev->lock); | |
1458 | return rc; | |
1459 | } | |
1460 | ||
d8b4b582 DH |
1461 | static void rc_dev_release(struct device *device) |
1462 | { | |
47cae1e1 MK |
1463 | struct rc_dev *dev = to_rc_dev(device); |
1464 | ||
1465 | kfree(dev); | |
d8b4b582 DH |
1466 | } |
1467 | ||
bc2a6c57 MCC |
1468 | #define ADD_HOTPLUG_VAR(fmt, val...) \ |
1469 | do { \ | |
1470 | int err = add_uevent_var(env, fmt, val); \ | |
1471 | if (err) \ | |
1472 | return err; \ | |
1473 | } while (0) | |
1474 | ||
1475 | static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env) | |
1476 | { | |
d8b4b582 | 1477 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 | 1478 | |
b088ba65 MCC |
1479 | if (dev->rc_map.name) |
1480 | ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name); | |
d8b4b582 DH |
1481 | if (dev->driver_name) |
1482 | ADD_HOTPLUG_VAR("DRV_NAME=%s", dev->driver_name); | |
bc2a6c57 MCC |
1483 | |
1484 | return 0; | |
1485 | } | |
1486 | ||
1487 | /* | |
1488 | * Static device attribute struct with the sysfs attributes for IR's | |
1489 | */ | |
6d75db30 SY |
1490 | static struct device_attribute dev_attr_ro_protocols = |
1491 | __ATTR(protocols, 0444, show_protocols, NULL); | |
1492 | static struct device_attribute dev_attr_rw_protocols = | |
1493 | __ATTR(protocols, 0644, show_protocols, store_protocols); | |
0751d33c SY |
1494 | static DEVICE_ATTR(wakeup_protocols, 0644, show_wakeup_protocols, |
1495 | store_wakeup_protocols); | |
00942d1a JH |
1496 | static RC_FILTER_ATTR(filter, S_IRUGO|S_IWUSR, |
1497 | show_filter, store_filter, RC_FILTER_NORMAL, false); | |
1498 | static RC_FILTER_ATTR(filter_mask, S_IRUGO|S_IWUSR, | |
1499 | show_filter, store_filter, RC_FILTER_NORMAL, true); | |
1500 | static RC_FILTER_ATTR(wakeup_filter, S_IRUGO|S_IWUSR, | |
1501 | show_filter, store_filter, RC_FILTER_WAKEUP, false); | |
1502 | static RC_FILTER_ATTR(wakeup_filter_mask, S_IRUGO|S_IWUSR, | |
1503 | show_filter, store_filter, RC_FILTER_WAKEUP, true); | |
bc2a6c57 | 1504 | |
6d75db30 SY |
1505 | static struct attribute *rc_dev_rw_protocol_attrs[] = { |
1506 | &dev_attr_rw_protocols.attr, | |
99b0f3c9 DH |
1507 | NULL, |
1508 | }; | |
1509 | ||
6d75db30 SY |
1510 | static const struct attribute_group rc_dev_rw_protocol_attr_grp = { |
1511 | .attrs = rc_dev_rw_protocol_attrs, | |
1512 | }; | |
1513 | ||
1514 | static struct attribute *rc_dev_ro_protocol_attrs[] = { | |
1515 | &dev_attr_ro_protocols.attr, | |
1516 | NULL, | |
1517 | }; | |
1518 | ||
1519 | static const struct attribute_group rc_dev_ro_protocol_attr_grp = { | |
1520 | .attrs = rc_dev_ro_protocol_attrs, | |
99b0f3c9 DH |
1521 | }; |
1522 | ||
99b0f3c9 | 1523 | static struct attribute *rc_dev_filter_attrs[] = { |
00942d1a JH |
1524 | &dev_attr_filter.attr.attr, |
1525 | &dev_attr_filter_mask.attr.attr, | |
bc2a6c57 MCC |
1526 | NULL, |
1527 | }; | |
1528 | ||
db68102c | 1529 | static const struct attribute_group rc_dev_filter_attr_grp = { |
99b0f3c9 | 1530 | .attrs = rc_dev_filter_attrs, |
bc2a6c57 MCC |
1531 | }; |
1532 | ||
99b0f3c9 DH |
1533 | static struct attribute *rc_dev_wakeup_filter_attrs[] = { |
1534 | &dev_attr_wakeup_filter.attr.attr, | |
1535 | &dev_attr_wakeup_filter_mask.attr.attr, | |
0751d33c | 1536 | &dev_attr_wakeup_protocols.attr, |
99b0f3c9 DH |
1537 | NULL, |
1538 | }; | |
1539 | ||
db68102c | 1540 | static const struct attribute_group rc_dev_wakeup_filter_attr_grp = { |
99b0f3c9 | 1541 | .attrs = rc_dev_wakeup_filter_attrs, |
bc2a6c57 MCC |
1542 | }; |
1543 | ||
f03f02f9 | 1544 | static const struct device_type rc_dev_type = { |
d8b4b582 | 1545 | .release = rc_dev_release, |
bc2a6c57 MCC |
1546 | .uevent = rc_dev_uevent, |
1547 | }; | |
1548 | ||
0f7499fd | 1549 | struct rc_dev *rc_allocate_device(enum rc_driver_type type) |
bc2a6c57 | 1550 | { |
d8b4b582 | 1551 | struct rc_dev *dev; |
bc2a6c57 | 1552 | |
d8b4b582 DH |
1553 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
1554 | if (!dev) | |
1555 | return NULL; | |
1556 | ||
d34aee10 AS |
1557 | if (type != RC_DRIVER_IR_RAW_TX) { |
1558 | dev->input_dev = input_allocate_device(); | |
1559 | if (!dev->input_dev) { | |
1560 | kfree(dev); | |
1561 | return NULL; | |
1562 | } | |
1563 | ||
1564 | dev->input_dev->getkeycode = ir_getkeycode; | |
1565 | dev->input_dev->setkeycode = ir_setkeycode; | |
1566 | input_set_drvdata(dev->input_dev, dev); | |
d8b4b582 | 1567 | |
d34aee10 AS |
1568 | setup_timer(&dev->timer_keyup, ir_timer_keyup, |
1569 | (unsigned long)dev); | |
d8b4b582 | 1570 | |
d34aee10 AS |
1571 | spin_lock_init(&dev->rc_map.lock); |
1572 | spin_lock_init(&dev->keylock); | |
1573 | } | |
08aeb7c9 | 1574 | mutex_init(&dev->lock); |
bc2a6c57 | 1575 | |
d8b4b582 | 1576 | dev->dev.type = &rc_dev_type; |
40fc5325 | 1577 | dev->dev.class = &rc_class; |
d8b4b582 DH |
1578 | device_initialize(&dev->dev); |
1579 | ||
0f7499fd AS |
1580 | dev->driver_type = type; |
1581 | ||
d8b4b582 DH |
1582 | __module_get(THIS_MODULE); |
1583 | return dev; | |
1584 | } | |
1585 | EXPORT_SYMBOL_GPL(rc_allocate_device); | |
1586 | ||
1587 | void rc_free_device(struct rc_dev *dev) | |
bc2a6c57 | 1588 | { |
b05681b9 MCC |
1589 | if (!dev) |
1590 | return; | |
1591 | ||
3dd94f00 | 1592 | input_free_device(dev->input_dev); |
b05681b9 MCC |
1593 | |
1594 | put_device(&dev->dev); | |
1595 | ||
47cae1e1 MK |
1596 | /* kfree(dev) will be called by the callback function |
1597 | rc_dev_release() */ | |
1598 | ||
b05681b9 | 1599 | module_put(THIS_MODULE); |
d8b4b582 DH |
1600 | } |
1601 | EXPORT_SYMBOL_GPL(rc_free_device); | |
1602 | ||
ddbf7d5a HK |
1603 | static void devm_rc_alloc_release(struct device *dev, void *res) |
1604 | { | |
1605 | rc_free_device(*(struct rc_dev **)res); | |
1606 | } | |
1607 | ||
0f7499fd AS |
1608 | struct rc_dev *devm_rc_allocate_device(struct device *dev, |
1609 | enum rc_driver_type type) | |
ddbf7d5a HK |
1610 | { |
1611 | struct rc_dev **dr, *rc; | |
1612 | ||
1613 | dr = devres_alloc(devm_rc_alloc_release, sizeof(*dr), GFP_KERNEL); | |
1614 | if (!dr) | |
1615 | return NULL; | |
1616 | ||
0f7499fd | 1617 | rc = rc_allocate_device(type); |
ddbf7d5a HK |
1618 | if (!rc) { |
1619 | devres_free(dr); | |
1620 | return NULL; | |
1621 | } | |
1622 | ||
1623 | rc->dev.parent = dev; | |
1624 | rc->managed_alloc = true; | |
1625 | *dr = rc; | |
1626 | devres_add(dev, dr); | |
1627 | ||
1628 | return rc; | |
1629 | } | |
1630 | EXPORT_SYMBOL_GPL(devm_rc_allocate_device); | |
1631 | ||
f56928ab | 1632 | static int rc_prepare_rx_device(struct rc_dev *dev) |
d8b4b582 | 1633 | { |
fcb13097 | 1634 | int rc; |
7ff2c2bc | 1635 | struct rc_map *rc_map; |
6d741bfe | 1636 | u64 rc_proto; |
bc2a6c57 | 1637 | |
7ff2c2bc | 1638 | if (!dev->map_name) |
d8b4b582 | 1639 | return -EINVAL; |
bc2a6c57 | 1640 | |
d100e659 | 1641 | rc_map = rc_map_get(dev->map_name); |
b088ba65 | 1642 | if (!rc_map) |
d100e659 | 1643 | rc_map = rc_map_get(RC_MAP_EMPTY); |
b088ba65 | 1644 | if (!rc_map || !rc_map->scan || rc_map->size == 0) |
d8b4b582 DH |
1645 | return -EINVAL; |
1646 | ||
7ff2c2bc AS |
1647 | rc = ir_setkeytable(dev, rc_map); |
1648 | if (rc) | |
1649 | return rc; | |
1650 | ||
6d741bfe | 1651 | rc_proto = BIT_ULL(rc_map->rc_proto); |
7ff2c2bc | 1652 | |
831c4c81 SY |
1653 | if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol) |
1654 | dev->enabled_protocols = dev->allowed_protocols; | |
1655 | ||
41380868 | 1656 | if (dev->change_protocol) { |
6d741bfe | 1657 | rc = dev->change_protocol(dev, &rc_proto); |
7ff2c2bc AS |
1658 | if (rc < 0) |
1659 | goto out_table; | |
6d741bfe | 1660 | dev->enabled_protocols = rc_proto; |
7ff2c2bc AS |
1661 | } |
1662 | ||
41380868 | 1663 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
6d741bfe | 1664 | ir_raw_load_modules(&rc_proto); |
41380868 | 1665 | |
d8b4b582 DH |
1666 | set_bit(EV_KEY, dev->input_dev->evbit); |
1667 | set_bit(EV_REP, dev->input_dev->evbit); | |
1668 | set_bit(EV_MSC, dev->input_dev->evbit); | |
1669 | set_bit(MSC_SCAN, dev->input_dev->mscbit); | |
1670 | if (dev->open) | |
1671 | dev->input_dev->open = ir_open; | |
1672 | if (dev->close) | |
1673 | dev->input_dev->close = ir_close; | |
1674 | ||
b2aceb73 DH |
1675 | dev->input_dev->dev.parent = &dev->dev; |
1676 | memcpy(&dev->input_dev->id, &dev->input_id, sizeof(dev->input_id)); | |
1677 | dev->input_dev->phys = dev->input_phys; | |
518f4b26 | 1678 | dev->input_dev->name = dev->device_name; |
b2aceb73 | 1679 | |
f56928ab DH |
1680 | return 0; |
1681 | ||
1682 | out_table: | |
1683 | ir_free_table(&dev->rc_map); | |
1684 | ||
1685 | return rc; | |
1686 | } | |
1687 | ||
1688 | static int rc_setup_rx_device(struct rc_dev *dev) | |
1689 | { | |
1690 | int rc; | |
1691 | ||
b2aceb73 DH |
1692 | /* rc_open will be called here */ |
1693 | rc = input_register_device(dev->input_dev); | |
1694 | if (rc) | |
f56928ab | 1695 | return rc; |
b2aceb73 | 1696 | |
7ff2c2bc AS |
1697 | /* |
1698 | * Default delay of 250ms is too short for some protocols, especially | |
1699 | * since the timeout is currently set to 250ms. Increase it to 500ms, | |
1700 | * to avoid wrong repetition of the keycodes. Note that this must be | |
1701 | * set after the call to input_register_device(). | |
1702 | */ | |
1703 | dev->input_dev->rep[REP_DELAY] = 500; | |
1704 | ||
1705 | /* | |
1706 | * As a repeat event on protocols like RC-5 and NEC take as long as | |
1707 | * 110/114ms, using 33ms as a repeat period is not the right thing | |
1708 | * to do. | |
1709 | */ | |
1710 | dev->input_dev->rep[REP_PERIOD] = 125; | |
1711 | ||
7ff2c2bc | 1712 | return 0; |
7ff2c2bc AS |
1713 | } |
1714 | ||
1715 | static void rc_free_rx_device(struct rc_dev *dev) | |
1716 | { | |
f56928ab | 1717 | if (!dev) |
7ff2c2bc AS |
1718 | return; |
1719 | ||
f56928ab DH |
1720 | if (dev->input_dev) { |
1721 | input_unregister_device(dev->input_dev); | |
1722 | dev->input_dev = NULL; | |
1723 | } | |
7ff2c2bc | 1724 | |
f56928ab | 1725 | ir_free_table(&dev->rc_map); |
7ff2c2bc AS |
1726 | } |
1727 | ||
1728 | int rc_register_device(struct rc_dev *dev) | |
1729 | { | |
7ff2c2bc AS |
1730 | const char *path; |
1731 | int attr = 0; | |
1732 | int minor; | |
1733 | int rc; | |
1734 | ||
1735 | if (!dev) | |
1736 | return -EINVAL; | |
1737 | ||
fcb13097 DH |
1738 | minor = ida_simple_get(&rc_ida, 0, RC_DEV_MAX, GFP_KERNEL); |
1739 | if (minor < 0) | |
1740 | return minor; | |
1741 | ||
1742 | dev->minor = minor; | |
1743 | dev_set_name(&dev->dev, "rc%u", dev->minor); | |
1744 | dev_set_drvdata(&dev->dev, dev); | |
587d1b06 | 1745 | |
99b0f3c9 | 1746 | dev->dev.groups = dev->sysfs_groups; |
6d75db30 SY |
1747 | if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol) |
1748 | dev->sysfs_groups[attr++] = &rc_dev_ro_protocol_attr_grp; | |
1749 | else if (dev->driver_type != RC_DRIVER_IR_RAW_TX) | |
1750 | dev->sysfs_groups[attr++] = &rc_dev_rw_protocol_attr_grp; | |
99b0f3c9 | 1751 | if (dev->s_filter) |
120703f9 | 1752 | dev->sysfs_groups[attr++] = &rc_dev_filter_attr_grp; |
99b0f3c9 DH |
1753 | if (dev->s_wakeup_filter) |
1754 | dev->sysfs_groups[attr++] = &rc_dev_wakeup_filter_attr_grp; | |
99b0f3c9 DH |
1755 | dev->sysfs_groups[attr++] = NULL; |
1756 | ||
f56928ab DH |
1757 | if (dev->driver_type == RC_DRIVER_IR_RAW || |
1758 | dev->driver_type == RC_DRIVER_IR_RAW_TX) { | |
1759 | rc = ir_raw_event_prepare(dev); | |
1760 | if (rc < 0) | |
1761 | goto out_minor; | |
1762 | } | |
1763 | ||
1764 | if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { | |
1765 | rc = rc_prepare_rx_device(dev); | |
1766 | if (rc) | |
1767 | goto out_raw; | |
1768 | } | |
1769 | ||
d8b4b582 DH |
1770 | rc = device_add(&dev->dev); |
1771 | if (rc) | |
f56928ab | 1772 | goto out_rx_free; |
bc2a6c57 | 1773 | |
d8b4b582 | 1774 | path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL); |
4dc0e908 | 1775 | dev_info(&dev->dev, "%s as %s\n", |
518f4b26 | 1776 | dev->device_name ?: "Unspecified device", path ?: "N/A"); |
bc2a6c57 MCC |
1777 | kfree(path); |
1778 | ||
f56928ab DH |
1779 | if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { |
1780 | rc = rc_setup_rx_device(dev); | |
1781 | if (rc) | |
1782 | goto out_dev; | |
1783 | } | |
1784 | ||
d34aee10 AS |
1785 | if (dev->driver_type == RC_DRIVER_IR_RAW || |
1786 | dev->driver_type == RC_DRIVER_IR_RAW_TX) { | |
d8b4b582 DH |
1787 | rc = ir_raw_event_register(dev); |
1788 | if (rc < 0) | |
f56928ab | 1789 | goto out_rx; |
d8b4b582 DH |
1790 | } |
1791 | ||
7ff2c2bc | 1792 | IR_dprintk(1, "Registered rc%u (driver: %s)\n", |
fcb13097 | 1793 | dev->minor, |
7ff2c2bc | 1794 | dev->driver_name ? dev->driver_name : "unknown"); |
d8b4b582 | 1795 | |
bc2a6c57 | 1796 | return 0; |
d8b4b582 | 1797 | |
f56928ab DH |
1798 | out_rx: |
1799 | rc_free_rx_device(dev); | |
d8b4b582 DH |
1800 | out_dev: |
1801 | device_del(&dev->dev); | |
f56928ab DH |
1802 | out_rx_free: |
1803 | ir_free_table(&dev->rc_map); | |
1804 | out_raw: | |
1805 | ir_raw_event_free(dev); | |
1806 | out_minor: | |
fcb13097 | 1807 | ida_simple_remove(&rc_ida, minor); |
d8b4b582 | 1808 | return rc; |
bc2a6c57 | 1809 | } |
d8b4b582 | 1810 | EXPORT_SYMBOL_GPL(rc_register_device); |
bc2a6c57 | 1811 | |
ddbf7d5a HK |
1812 | static void devm_rc_release(struct device *dev, void *res) |
1813 | { | |
1814 | rc_unregister_device(*(struct rc_dev **)res); | |
1815 | } | |
1816 | ||
1817 | int devm_rc_register_device(struct device *parent, struct rc_dev *dev) | |
1818 | { | |
1819 | struct rc_dev **dr; | |
1820 | int ret; | |
1821 | ||
1822 | dr = devres_alloc(devm_rc_release, sizeof(*dr), GFP_KERNEL); | |
1823 | if (!dr) | |
1824 | return -ENOMEM; | |
1825 | ||
1826 | ret = rc_register_device(dev); | |
1827 | if (ret) { | |
1828 | devres_free(dr); | |
1829 | return ret; | |
1830 | } | |
1831 | ||
1832 | *dr = dev; | |
1833 | devres_add(parent, dr); | |
1834 | ||
1835 | return 0; | |
1836 | } | |
1837 | EXPORT_SYMBOL_GPL(devm_rc_register_device); | |
1838 | ||
d8b4b582 | 1839 | void rc_unregister_device(struct rc_dev *dev) |
bc2a6c57 | 1840 | { |
d8b4b582 DH |
1841 | if (!dev) |
1842 | return; | |
bc2a6c57 | 1843 | |
d8b4b582 | 1844 | del_timer_sync(&dev->timer_keyup); |
bc2a6c57 | 1845 | |
d8b4b582 DH |
1846 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1847 | ir_raw_event_unregister(dev); | |
1848 | ||
7ff2c2bc | 1849 | rc_free_rx_device(dev); |
d8b4b582 | 1850 | |
b05681b9 | 1851 | device_del(&dev->dev); |
d8b4b582 | 1852 | |
fcb13097 DH |
1853 | ida_simple_remove(&rc_ida, dev->minor); |
1854 | ||
ddbf7d5a HK |
1855 | if (!dev->managed_alloc) |
1856 | rc_free_device(dev); | |
bc2a6c57 | 1857 | } |
b05681b9 | 1858 | |
d8b4b582 | 1859 | EXPORT_SYMBOL_GPL(rc_unregister_device); |
bc2a6c57 MCC |
1860 | |
1861 | /* | |
1862 | * Init/exit code for the module. Basically, creates/removes /sys/class/rc | |
1863 | */ | |
1864 | ||
6bda9644 | 1865 | static int __init rc_core_init(void) |
bc2a6c57 | 1866 | { |
40fc5325 | 1867 | int rc = class_register(&rc_class); |
bc2a6c57 | 1868 | if (rc) { |
d3d96820 | 1869 | pr_err("rc_core: unable to register rc class\n"); |
bc2a6c57 MCC |
1870 | return rc; |
1871 | } | |
1872 | ||
153a60bb | 1873 | led_trigger_register_simple("rc-feedback", &led_feedback); |
d100e659 | 1874 | rc_map_register(&empty_map); |
bc2a6c57 MCC |
1875 | |
1876 | return 0; | |
1877 | } | |
1878 | ||
6bda9644 | 1879 | static void __exit rc_core_exit(void) |
bc2a6c57 | 1880 | { |
40fc5325 | 1881 | class_unregister(&rc_class); |
153a60bb | 1882 | led_trigger_unregister_simple(led_feedback); |
d100e659 | 1883 | rc_map_unregister(&empty_map); |
bc2a6c57 MCC |
1884 | } |
1885 | ||
e76d4ce4 | 1886 | subsys_initcall(rc_core_init); |
6bda9644 | 1887 | module_exit(rc_core_exit); |
bc2a6c57 | 1888 | |
6bda9644 MCC |
1889 | int rc_core_debug; /* ir_debug level (0,1,2) */ |
1890 | EXPORT_SYMBOL_GPL(rc_core_debug); | |
1891 | module_param_named(debug, rc_core_debug, int, 0644); | |
446e4a64 | 1892 | |
37e59f87 | 1893 | MODULE_AUTHOR("Mauro Carvalho Chehab"); |
446e4a64 | 1894 | MODULE_LICENSE("GPL"); |