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20835280 MCC |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // rc-main.c - Remote Controller core module | |
3 | // | |
4 | // Copyright (C) 2009-2010 by Mauro Carvalho Chehab | |
ef53a115 | 5 | |
d3d96820 MCC |
6 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
7 | ||
6bda9644 | 8 | #include <media/rc-core.h> |
8ca01d4f | 9 | #include <linux/bsearch.h> |
631493ec MCC |
10 | #include <linux/spinlock.h> |
11 | #include <linux/delay.h> | |
882ead32 | 12 | #include <linux/input.h> |
153a60bb | 13 | #include <linux/leds.h> |
5a0e3ad6 | 14 | #include <linux/slab.h> |
fcb13097 | 15 | #include <linux/idr.h> |
bc2a6c57 | 16 | #include <linux/device.h> |
7a707b89 | 17 | #include <linux/module.h> |
f62de675 | 18 | #include "rc-core-priv.h" |
ef53a115 | 19 | |
b3074c0a DH |
20 | /* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */ |
21 | #define IR_TAB_MIN_SIZE 256 | |
22 | #define IR_TAB_MAX_SIZE 8192 | |
f6fc5049 | 23 | |
d57ea877 SY |
24 | static const struct { |
25 | const char *name; | |
26 | unsigned int repeat_period; | |
27 | unsigned int scancode_bits; | |
28 | } protocols[] = { | |
6d741bfe SY |
29 | [RC_PROTO_UNKNOWN] = { .name = "unknown", .repeat_period = 250 }, |
30 | [RC_PROTO_OTHER] = { .name = "other", .repeat_period = 250 }, | |
31 | [RC_PROTO_RC5] = { .name = "rc-5", | |
67f0f15a | 32 | .scancode_bits = 0x1f7f, .repeat_period = 250 }, |
6d741bfe | 33 | [RC_PROTO_RC5X_20] = { .name = "rc-5x-20", |
67f0f15a | 34 | .scancode_bits = 0x1f7f3f, .repeat_period = 250 }, |
6d741bfe | 35 | [RC_PROTO_RC5_SZ] = { .name = "rc-5-sz", |
67f0f15a | 36 | .scancode_bits = 0x2fff, .repeat_period = 250 }, |
6d741bfe | 37 | [RC_PROTO_JVC] = { .name = "jvc", |
d57ea877 | 38 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 39 | [RC_PROTO_SONY12] = { .name = "sony-12", |
67f0f15a | 40 | .scancode_bits = 0x1f007f, .repeat_period = 250 }, |
6d741bfe | 41 | [RC_PROTO_SONY15] = { .name = "sony-15", |
67f0f15a | 42 | .scancode_bits = 0xff007f, .repeat_period = 250 }, |
6d741bfe | 43 | [RC_PROTO_SONY20] = { .name = "sony-20", |
67f0f15a | 44 | .scancode_bits = 0x1fff7f, .repeat_period = 250 }, |
6d741bfe | 45 | [RC_PROTO_NEC] = { .name = "nec", |
67f0f15a | 46 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 47 | [RC_PROTO_NECX] = { .name = "nec-x", |
67f0f15a | 48 | .scancode_bits = 0xffffff, .repeat_period = 250 }, |
6d741bfe | 49 | [RC_PROTO_NEC32] = { .name = "nec-32", |
67f0f15a | 50 | .scancode_bits = 0xffffffff, .repeat_period = 250 }, |
6d741bfe | 51 | [RC_PROTO_SANYO] = { .name = "sanyo", |
d57ea877 | 52 | .scancode_bits = 0x1fffff, .repeat_period = 250 }, |
6d741bfe | 53 | [RC_PROTO_MCIR2_KBD] = { .name = "mcir2-kbd", |
67f0f15a | 54 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 55 | [RC_PROTO_MCIR2_MSE] = { .name = "mcir2-mse", |
67f0f15a | 56 | .scancode_bits = 0x1fffff, .repeat_period = 250 }, |
6d741bfe | 57 | [RC_PROTO_RC6_0] = { .name = "rc-6-0", |
67f0f15a | 58 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 59 | [RC_PROTO_RC6_6A_20] = { .name = "rc-6-6a-20", |
67f0f15a | 60 | .scancode_bits = 0xfffff, .repeat_period = 250 }, |
6d741bfe | 61 | [RC_PROTO_RC6_6A_24] = { .name = "rc-6-6a-24", |
67f0f15a | 62 | .scancode_bits = 0xffffff, .repeat_period = 250 }, |
6d741bfe | 63 | [RC_PROTO_RC6_6A_32] = { .name = "rc-6-6a-32", |
67f0f15a | 64 | .scancode_bits = 0xffffffff, .repeat_period = 250 }, |
6d741bfe | 65 | [RC_PROTO_RC6_MCE] = { .name = "rc-6-mce", |
67f0f15a | 66 | .scancode_bits = 0xffff7fff, .repeat_period = 250 }, |
6d741bfe | 67 | [RC_PROTO_SHARP] = { .name = "sharp", |
d57ea877 | 68 | .scancode_bits = 0x1fff, .repeat_period = 250 }, |
6d741bfe SY |
69 | [RC_PROTO_XMP] = { .name = "xmp", .repeat_period = 250 }, |
70 | [RC_PROTO_CEC] = { .name = "cec", .repeat_period = 550 }, | |
d57ea877 | 71 | }; |
a374fef4 | 72 | |
4c7b355d | 73 | /* Used to keep track of known keymaps */ |
631493ec MCC |
74 | static LIST_HEAD(rc_map_list); |
75 | static DEFINE_SPINLOCK(rc_map_lock); | |
153a60bb | 76 | static struct led_trigger *led_feedback; |
631493ec | 77 | |
fcb13097 DH |
78 | /* Used to keep track of rc devices */ |
79 | static DEFINE_IDA(rc_ida); | |
80 | ||
d100e659 | 81 | static struct rc_map_list *seek_rc_map(const char *name) |
631493ec | 82 | { |
d100e659 | 83 | struct rc_map_list *map = NULL; |
631493ec MCC |
84 | |
85 | spin_lock(&rc_map_lock); | |
86 | list_for_each_entry(map, &rc_map_list, list) { | |
87 | if (!strcmp(name, map->map.name)) { | |
88 | spin_unlock(&rc_map_lock); | |
89 | return map; | |
90 | } | |
91 | } | |
92 | spin_unlock(&rc_map_lock); | |
93 | ||
94 | return NULL; | |
95 | } | |
96 | ||
d100e659 | 97 | struct rc_map *rc_map_get(const char *name) |
631493ec MCC |
98 | { |
99 | ||
d100e659 | 100 | struct rc_map_list *map; |
631493ec MCC |
101 | |
102 | map = seek_rc_map(name); | |
2ff56fad | 103 | #ifdef CONFIG_MODULES |
631493ec | 104 | if (!map) { |
8ea5488a | 105 | int rc = request_module("%s", name); |
631493ec | 106 | if (rc < 0) { |
d3d96820 | 107 | pr_err("Couldn't load IR keymap %s\n", name); |
631493ec MCC |
108 | return NULL; |
109 | } | |
110 | msleep(20); /* Give some time for IR to register */ | |
111 | ||
112 | map = seek_rc_map(name); | |
113 | } | |
114 | #endif | |
115 | if (!map) { | |
d3d96820 | 116 | pr_err("IR keymap %s not found\n", name); |
631493ec MCC |
117 | return NULL; |
118 | } | |
119 | ||
120 | printk(KERN_INFO "Registered IR keymap %s\n", map->map.name); | |
121 | ||
122 | return &map->map; | |
123 | } | |
d100e659 | 124 | EXPORT_SYMBOL_GPL(rc_map_get); |
631493ec | 125 | |
d100e659 | 126 | int rc_map_register(struct rc_map_list *map) |
631493ec MCC |
127 | { |
128 | spin_lock(&rc_map_lock); | |
129 | list_add_tail(&map->list, &rc_map_list); | |
130 | spin_unlock(&rc_map_lock); | |
131 | return 0; | |
132 | } | |
d100e659 | 133 | EXPORT_SYMBOL_GPL(rc_map_register); |
631493ec | 134 | |
d100e659 | 135 | void rc_map_unregister(struct rc_map_list *map) |
631493ec MCC |
136 | { |
137 | spin_lock(&rc_map_lock); | |
138 | list_del(&map->list); | |
139 | spin_unlock(&rc_map_lock); | |
140 | } | |
d100e659 | 141 | EXPORT_SYMBOL_GPL(rc_map_unregister); |
631493ec MCC |
142 | |
143 | ||
2f4f58d6 | 144 | static struct rc_map_table empty[] = { |
631493ec MCC |
145 | { 0x2a, KEY_COFFEE }, |
146 | }; | |
147 | ||
d100e659 | 148 | static struct rc_map_list empty_map = { |
631493ec | 149 | .map = { |
6d741bfe SY |
150 | .scan = empty, |
151 | .size = ARRAY_SIZE(empty), | |
152 | .rc_proto = RC_PROTO_UNKNOWN, /* Legacy IR type */ | |
153 | .name = RC_MAP_EMPTY, | |
631493ec MCC |
154 | } |
155 | }; | |
156 | ||
9f470095 DT |
157 | /** |
158 | * ir_create_table() - initializes a scancode table | |
b088ba65 | 159 | * @rc_map: the rc_map to initialize |
9f470095 | 160 | * @name: name to assign to the table |
6d741bfe | 161 | * @rc_proto: ir type to assign to the new table |
9f470095 | 162 | * @size: initial size of the table |
9f470095 | 163 | * |
b088ba65 | 164 | * This routine will initialize the rc_map and will allocate |
d8b4b582 | 165 | * memory to hold at least the specified number of elements. |
f67f366c MCC |
166 | * |
167 | * return: zero on success or a negative error code | |
9f470095 | 168 | */ |
b088ba65 | 169 | static int ir_create_table(struct rc_map *rc_map, |
6d741bfe | 170 | const char *name, u64 rc_proto, size_t size) |
9f470095 | 171 | { |
d54fc3bb HV |
172 | rc_map->name = kstrdup(name, GFP_KERNEL); |
173 | if (!rc_map->name) | |
174 | return -ENOMEM; | |
6d741bfe | 175 | rc_map->rc_proto = rc_proto; |
2f4f58d6 MCC |
176 | rc_map->alloc = roundup_pow_of_two(size * sizeof(struct rc_map_table)); |
177 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); | |
b088ba65 | 178 | rc_map->scan = kmalloc(rc_map->alloc, GFP_KERNEL); |
d54fc3bb HV |
179 | if (!rc_map->scan) { |
180 | kfree(rc_map->name); | |
181 | rc_map->name = NULL; | |
9f470095 | 182 | return -ENOMEM; |
d54fc3bb | 183 | } |
9f470095 DT |
184 | |
185 | IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", | |
b088ba65 | 186 | rc_map->size, rc_map->alloc); |
9f470095 DT |
187 | return 0; |
188 | } | |
189 | ||
190 | /** | |
191 | * ir_free_table() - frees memory allocated by a scancode table | |
b088ba65 | 192 | * @rc_map: the table whose mappings need to be freed |
9f470095 DT |
193 | * |
194 | * This routine will free memory alloctaed for key mappings used by given | |
195 | * scancode table. | |
196 | */ | |
b088ba65 | 197 | static void ir_free_table(struct rc_map *rc_map) |
9f470095 | 198 | { |
b088ba65 | 199 | rc_map->size = 0; |
d54fc3bb | 200 | kfree(rc_map->name); |
c183d358 | 201 | rc_map->name = NULL; |
b088ba65 MCC |
202 | kfree(rc_map->scan); |
203 | rc_map->scan = NULL; | |
9f470095 DT |
204 | } |
205 | ||
7fee03e4 | 206 | /** |
b3074c0a | 207 | * ir_resize_table() - resizes a scancode table if necessary |
b088ba65 | 208 | * @rc_map: the rc_map to resize |
9f470095 | 209 | * @gfp_flags: gfp flags to use when allocating memory |
7fee03e4 | 210 | * |
b088ba65 | 211 | * This routine will shrink the rc_map if it has lots of |
b3074c0a | 212 | * unused entries and grow it if it is full. |
f67f366c MCC |
213 | * |
214 | * return: zero on success or a negative error code | |
7fee03e4 | 215 | */ |
b088ba65 | 216 | static int ir_resize_table(struct rc_map *rc_map, gfp_t gfp_flags) |
7fee03e4 | 217 | { |
b088ba65 | 218 | unsigned int oldalloc = rc_map->alloc; |
b3074c0a | 219 | unsigned int newalloc = oldalloc; |
2f4f58d6 MCC |
220 | struct rc_map_table *oldscan = rc_map->scan; |
221 | struct rc_map_table *newscan; | |
b3074c0a | 222 | |
b088ba65 | 223 | if (rc_map->size == rc_map->len) { |
b3074c0a | 224 | /* All entries in use -> grow keytable */ |
b088ba65 | 225 | if (rc_map->alloc >= IR_TAB_MAX_SIZE) |
b3074c0a | 226 | return -ENOMEM; |
7fee03e4 | 227 | |
b3074c0a DH |
228 | newalloc *= 2; |
229 | IR_dprintk(1, "Growing table to %u bytes\n", newalloc); | |
230 | } | |
7fee03e4 | 231 | |
b088ba65 | 232 | if ((rc_map->len * 3 < rc_map->size) && (oldalloc > IR_TAB_MIN_SIZE)) { |
b3074c0a DH |
233 | /* Less than 1/3 of entries in use -> shrink keytable */ |
234 | newalloc /= 2; | |
235 | IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc); | |
236 | } | |
7fee03e4 | 237 | |
b3074c0a DH |
238 | if (newalloc == oldalloc) |
239 | return 0; | |
7fee03e4 | 240 | |
9f470095 | 241 | newscan = kmalloc(newalloc, gfp_flags); |
b3074c0a DH |
242 | if (!newscan) { |
243 | IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc); | |
244 | return -ENOMEM; | |
245 | } | |
7fee03e4 | 246 | |
2f4f58d6 | 247 | memcpy(newscan, rc_map->scan, rc_map->len * sizeof(struct rc_map_table)); |
b088ba65 MCC |
248 | rc_map->scan = newscan; |
249 | rc_map->alloc = newalloc; | |
2f4f58d6 | 250 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); |
b3074c0a DH |
251 | kfree(oldscan); |
252 | return 0; | |
7fee03e4 MCC |
253 | } |
254 | ||
f6fc5049 | 255 | /** |
9f470095 | 256 | * ir_update_mapping() - set a keycode in the scancode->keycode table |
d8b4b582 | 257 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 258 | * @rc_map: scancode table to be adjusted |
9f470095 | 259 | * @index: index of the mapping that needs to be updated |
f67f366c | 260 | * @new_keycode: the desired keycode |
9f470095 | 261 | * |
d8b4b582 | 262 | * This routine is used to update scancode->keycode mapping at given |
9f470095 | 263 | * position. |
f67f366c MCC |
264 | * |
265 | * return: previous keycode assigned to the mapping | |
266 | * | |
9f470095 | 267 | */ |
d8b4b582 | 268 | static unsigned int ir_update_mapping(struct rc_dev *dev, |
b088ba65 | 269 | struct rc_map *rc_map, |
9f470095 DT |
270 | unsigned int index, |
271 | unsigned int new_keycode) | |
272 | { | |
b088ba65 | 273 | int old_keycode = rc_map->scan[index].keycode; |
9f470095 DT |
274 | int i; |
275 | ||
276 | /* Did the user wish to remove the mapping? */ | |
277 | if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) { | |
278 | IR_dprintk(1, "#%d: Deleting scan 0x%04x\n", | |
b088ba65 MCC |
279 | index, rc_map->scan[index].scancode); |
280 | rc_map->len--; | |
281 | memmove(&rc_map->scan[index], &rc_map->scan[index+ 1], | |
2f4f58d6 | 282 | (rc_map->len - index) * sizeof(struct rc_map_table)); |
9f470095 DT |
283 | } else { |
284 | IR_dprintk(1, "#%d: %s scan 0x%04x with key 0x%04x\n", | |
285 | index, | |
286 | old_keycode == KEY_RESERVED ? "New" : "Replacing", | |
b088ba65 MCC |
287 | rc_map->scan[index].scancode, new_keycode); |
288 | rc_map->scan[index].keycode = new_keycode; | |
d8b4b582 | 289 | __set_bit(new_keycode, dev->input_dev->keybit); |
9f470095 DT |
290 | } |
291 | ||
292 | if (old_keycode != KEY_RESERVED) { | |
293 | /* A previous mapping was updated... */ | |
d8b4b582 | 294 | __clear_bit(old_keycode, dev->input_dev->keybit); |
9f470095 | 295 | /* ... but another scancode might use the same keycode */ |
b088ba65 MCC |
296 | for (i = 0; i < rc_map->len; i++) { |
297 | if (rc_map->scan[i].keycode == old_keycode) { | |
d8b4b582 | 298 | __set_bit(old_keycode, dev->input_dev->keybit); |
9f470095 DT |
299 | break; |
300 | } | |
301 | } | |
302 | ||
303 | /* Possibly shrink the keytable, failure is not a problem */ | |
b088ba65 | 304 | ir_resize_table(rc_map, GFP_ATOMIC); |
9f470095 DT |
305 | } |
306 | ||
307 | return old_keycode; | |
308 | } | |
309 | ||
310 | /** | |
4c7b355d | 311 | * ir_establish_scancode() - set a keycode in the scancode->keycode table |
d8b4b582 | 312 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 313 | * @rc_map: scancode table to be searched |
9f470095 DT |
314 | * @scancode: the desired scancode |
315 | * @resize: controls whether we allowed to resize the table to | |
25985edc | 316 | * accommodate not yet present scancodes |
f6fc5049 | 317 | * |
b088ba65 | 318 | * This routine is used to locate given scancode in rc_map. |
9f470095 DT |
319 | * If scancode is not yet present the routine will allocate a new slot |
320 | * for it. | |
f67f366c MCC |
321 | * |
322 | * return: index of the mapping containing scancode in question | |
323 | * or -1U in case of failure. | |
f6fc5049 | 324 | */ |
d8b4b582 | 325 | static unsigned int ir_establish_scancode(struct rc_dev *dev, |
b088ba65 | 326 | struct rc_map *rc_map, |
9f470095 DT |
327 | unsigned int scancode, |
328 | bool resize) | |
f6fc5049 | 329 | { |
b3074c0a | 330 | unsigned int i; |
9dfe4e83 MCC |
331 | |
332 | /* | |
333 | * Unfortunately, some hardware-based IR decoders don't provide | |
334 | * all bits for the complete IR code. In general, they provide only | |
335 | * the command part of the IR code. Yet, as it is possible to replace | |
336 | * the provided IR with another one, it is needed to allow loading | |
d8b4b582 DH |
337 | * IR tables from other remotes. So, we support specifying a mask to |
338 | * indicate the valid bits of the scancodes. | |
9dfe4e83 | 339 | */ |
9d2f1d3c DH |
340 | if (dev->scancode_mask) |
341 | scancode &= dev->scancode_mask; | |
b3074c0a DH |
342 | |
343 | /* First check if we already have a mapping for this ir command */ | |
b088ba65 MCC |
344 | for (i = 0; i < rc_map->len; i++) { |
345 | if (rc_map->scan[i].scancode == scancode) | |
9f470095 DT |
346 | return i; |
347 | ||
b3074c0a | 348 | /* Keytable is sorted from lowest to highest scancode */ |
b088ba65 | 349 | if (rc_map->scan[i].scancode >= scancode) |
b3074c0a | 350 | break; |
b3074c0a | 351 | } |
f6fc5049 | 352 | |
9f470095 | 353 | /* No previous mapping found, we might need to grow the table */ |
b088ba65 MCC |
354 | if (rc_map->size == rc_map->len) { |
355 | if (!resize || ir_resize_table(rc_map, GFP_ATOMIC)) | |
9f470095 DT |
356 | return -1U; |
357 | } | |
35438946 | 358 | |
9f470095 | 359 | /* i is the proper index to insert our new keycode */ |
b088ba65 MCC |
360 | if (i < rc_map->len) |
361 | memmove(&rc_map->scan[i + 1], &rc_map->scan[i], | |
2f4f58d6 | 362 | (rc_map->len - i) * sizeof(struct rc_map_table)); |
b088ba65 MCC |
363 | rc_map->scan[i].scancode = scancode; |
364 | rc_map->scan[i].keycode = KEY_RESERVED; | |
365 | rc_map->len++; | |
f6fc5049 | 366 | |
9f470095 | 367 | return i; |
f6fc5049 MCC |
368 | } |
369 | ||
ef53a115 | 370 | /** |
b3074c0a | 371 | * ir_setkeycode() - set a keycode in the scancode->keycode table |
d8b4b582 | 372 | * @idev: the struct input_dev device descriptor |
f67f366c MCC |
373 | * @ke: Input keymap entry |
374 | * @old_keycode: result | |
ef53a115 | 375 | * |
b3074c0a | 376 | * This routine is used to handle evdev EVIOCSKEY ioctl. |
f67f366c MCC |
377 | * |
378 | * return: -EINVAL if the keycode could not be inserted, otherwise zero. | |
ef53a115 | 379 | */ |
d8b4b582 | 380 | static int ir_setkeycode(struct input_dev *idev, |
9f470095 DT |
381 | const struct input_keymap_entry *ke, |
382 | unsigned int *old_keycode) | |
ef53a115 | 383 | { |
d8b4b582 | 384 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 385 | struct rc_map *rc_map = &rdev->rc_map; |
9f470095 DT |
386 | unsigned int index; |
387 | unsigned int scancode; | |
dea8a39f | 388 | int retval = 0; |
9f470095 | 389 | unsigned long flags; |
ef53a115 | 390 | |
b088ba65 | 391 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
392 | |
393 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
394 | index = ke->index; | |
b088ba65 | 395 | if (index >= rc_map->len) { |
9f470095 DT |
396 | retval = -EINVAL; |
397 | goto out; | |
398 | } | |
399 | } else { | |
400 | retval = input_scancode_to_scalar(ke, &scancode); | |
401 | if (retval) | |
402 | goto out; | |
403 | ||
b088ba65 MCC |
404 | index = ir_establish_scancode(rdev, rc_map, scancode, true); |
405 | if (index >= rc_map->len) { | |
9f470095 DT |
406 | retval = -ENOMEM; |
407 | goto out; | |
408 | } | |
409 | } | |
410 | ||
b088ba65 | 411 | *old_keycode = ir_update_mapping(rdev, rc_map, index, ke->keycode); |
9f470095 DT |
412 | |
413 | out: | |
b088ba65 | 414 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 415 | return retval; |
e97f4677 MCC |
416 | } |
417 | ||
418 | /** | |
b3074c0a | 419 | * ir_setkeytable() - sets several entries in the scancode->keycode table |
d8b4b582 | 420 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 421 | * @from: the struct rc_map to copy entries from |
e97f4677 | 422 | * |
b3074c0a | 423 | * This routine is used to handle table initialization. |
f67f366c MCC |
424 | * |
425 | * return: -ENOMEM if all keycodes could not be inserted, otherwise zero. | |
e97f4677 | 426 | */ |
d8b4b582 | 427 | static int ir_setkeytable(struct rc_dev *dev, |
b088ba65 | 428 | const struct rc_map *from) |
e97f4677 | 429 | { |
b088ba65 | 430 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
431 | unsigned int i, index; |
432 | int rc; | |
433 | ||
b088ba65 | 434 | rc = ir_create_table(rc_map, from->name, |
6d741bfe | 435 | from->rc_proto, from->size); |
9f470095 DT |
436 | if (rc) |
437 | return rc; | |
438 | ||
b3074c0a | 439 | for (i = 0; i < from->size; i++) { |
b088ba65 | 440 | index = ir_establish_scancode(dev, rc_map, |
9f470095 | 441 | from->scan[i].scancode, false); |
b088ba65 | 442 | if (index >= rc_map->len) { |
9f470095 | 443 | rc = -ENOMEM; |
b3074c0a | 444 | break; |
9f470095 DT |
445 | } |
446 | ||
b088ba65 | 447 | ir_update_mapping(dev, rc_map, index, |
9f470095 | 448 | from->scan[i].keycode); |
e97f4677 | 449 | } |
9f470095 DT |
450 | |
451 | if (rc) | |
b088ba65 | 452 | ir_free_table(rc_map); |
9f470095 | 453 | |
b3074c0a | 454 | return rc; |
ef53a115 MCC |
455 | } |
456 | ||
8ca01d4f TM |
457 | static int rc_map_cmp(const void *key, const void *elt) |
458 | { | |
459 | const unsigned int *scancode = key; | |
460 | const struct rc_map_table *e = elt; | |
461 | ||
462 | if (*scancode < e->scancode) | |
463 | return -1; | |
464 | else if (*scancode > e->scancode) | |
465 | return 1; | |
466 | return 0; | |
467 | } | |
468 | ||
9f470095 DT |
469 | /** |
470 | * ir_lookup_by_scancode() - locate mapping by scancode | |
b088ba65 | 471 | * @rc_map: the struct rc_map to search |
9f470095 | 472 | * @scancode: scancode to look for in the table |
9f470095 DT |
473 | * |
474 | * This routine performs binary search in RC keykeymap table for | |
475 | * given scancode. | |
f67f366c MCC |
476 | * |
477 | * return: index in the table, -1U if not found | |
9f470095 | 478 | */ |
b088ba65 | 479 | static unsigned int ir_lookup_by_scancode(const struct rc_map *rc_map, |
9f470095 DT |
480 | unsigned int scancode) |
481 | { | |
8ca01d4f TM |
482 | struct rc_map_table *res; |
483 | ||
484 | res = bsearch(&scancode, rc_map->scan, rc_map->len, | |
485 | sizeof(struct rc_map_table), rc_map_cmp); | |
486 | if (!res) | |
487 | return -1U; | |
488 | else | |
489 | return res - rc_map->scan; | |
9f470095 DT |
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 |
f67f366c | 495 | * @ke: Input keymap entry |
ef53a115 | 496 | * |
b3074c0a | 497 | * This routine is used to handle evdev EVIOCGKEY ioctl. |
f67f366c MCC |
498 | * |
499 | * return: always returns zero. | |
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 | |
ef53a115 | 556 | * |
d8b4b582 DH |
557 | * This routine is used by drivers which need to convert a scancode to a |
558 | * keycode. Normally it should not be used since drivers should have no | |
559 | * interest in keycodes. | |
f67f366c MCC |
560 | * |
561 | * return: the corresponding keycode, or KEY_RESERVED | |
ef53a115 | 562 | */ |
ca86674b | 563 | u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode) |
ef53a115 | 564 | { |
b088ba65 | 565 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
566 | unsigned int keycode; |
567 | unsigned int index; | |
568 | unsigned long flags; | |
569 | ||
b088ba65 | 570 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 | 571 | |
b088ba65 MCC |
572 | index = ir_lookup_by_scancode(rc_map, scancode); |
573 | keycode = index < rc_map->len ? | |
574 | rc_map->scan[index].keycode : KEY_RESERVED; | |
9f470095 | 575 | |
b088ba65 | 576 | spin_unlock_irqrestore(&rc_map->lock, flags); |
ef53a115 | 577 | |
35438946 MCC |
578 | if (keycode != KEY_RESERVED) |
579 | IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n", | |
518f4b26 | 580 | dev->device_name, scancode, keycode); |
9f470095 | 581 | |
b3074c0a | 582 | return keycode; |
ef53a115 | 583 | } |
ca86674b | 584 | EXPORT_SYMBOL_GPL(rc_g_keycode_from_table); |
ef53a115 | 585 | |
6660de56 | 586 | /** |
62c65031 | 587 | * ir_do_keyup() - internal function to signal the release of a keypress |
d8b4b582 | 588 | * @dev: the struct rc_dev descriptor of the device |
98c32bcd | 589 | * @sync: whether or not to call input_sync |
6660de56 | 590 | * |
62c65031 DH |
591 | * This function is used internally to release a keypress, it must be |
592 | * called with keylock held. | |
a374fef4 | 593 | */ |
98c32bcd | 594 | static void ir_do_keyup(struct rc_dev *dev, bool sync) |
a374fef4 | 595 | { |
d8b4b582 | 596 | if (!dev->keypressed) |
a374fef4 DH |
597 | return; |
598 | ||
d8b4b582 DH |
599 | IR_dprintk(1, "keyup key 0x%04x\n", dev->last_keycode); |
600 | input_report_key(dev->input_dev, dev->last_keycode, 0); | |
153a60bb | 601 | led_trigger_event(led_feedback, LED_OFF); |
98c32bcd JW |
602 | if (sync) |
603 | input_sync(dev->input_dev); | |
d8b4b582 | 604 | dev->keypressed = false; |
a374fef4 | 605 | } |
62c65031 DH |
606 | |
607 | /** | |
ca86674b | 608 | * rc_keyup() - signals the release of a keypress |
d8b4b582 | 609 | * @dev: the struct rc_dev descriptor of the device |
62c65031 DH |
610 | * |
611 | * This routine is used to signal that a key has been released on the | |
612 | * remote control. | |
613 | */ | |
ca86674b | 614 | void rc_keyup(struct rc_dev *dev) |
62c65031 DH |
615 | { |
616 | unsigned long flags; | |
62c65031 | 617 | |
d8b4b582 | 618 | spin_lock_irqsave(&dev->keylock, flags); |
98c32bcd | 619 | ir_do_keyup(dev, true); |
d8b4b582 | 620 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 621 | } |
ca86674b | 622 | EXPORT_SYMBOL_GPL(rc_keyup); |
a374fef4 DH |
623 | |
624 | /** | |
625 | * ir_timer_keyup() - generates a keyup event after a timeout | |
f67f366c MCC |
626 | * |
627 | * @t: a pointer to the struct timer_list | |
a374fef4 DH |
628 | * |
629 | * This routine will generate a keyup event some time after a keydown event | |
630 | * is generated when no further activity has been detected. | |
6660de56 | 631 | */ |
b17ec78a | 632 | static void ir_timer_keyup(struct timer_list *t) |
6660de56 | 633 | { |
b17ec78a | 634 | struct rc_dev *dev = from_timer(dev, t, timer_keyup); |
a374fef4 DH |
635 | unsigned long flags; |
636 | ||
637 | /* | |
638 | * ir->keyup_jiffies is used to prevent a race condition if a | |
639 | * hardware interrupt occurs at this point and the keyup timer | |
640 | * event is moved further into the future as a result. | |
641 | * | |
642 | * The timer will then be reactivated and this function called | |
643 | * again in the future. We need to exit gracefully in that case | |
644 | * to allow the input subsystem to do its auto-repeat magic or | |
645 | * a keyup event might follow immediately after the keydown. | |
646 | */ | |
d8b4b582 DH |
647 | spin_lock_irqsave(&dev->keylock, flags); |
648 | if (time_is_before_eq_jiffies(dev->keyup_jiffies)) | |
98c32bcd | 649 | ir_do_keyup(dev, true); |
d8b4b582 | 650 | spin_unlock_irqrestore(&dev->keylock, flags); |
a374fef4 DH |
651 | } |
652 | ||
653 | /** | |
ca86674b | 654 | * rc_repeat() - signals that a key is still pressed |
d8b4b582 | 655 | * @dev: the struct rc_dev descriptor of the device |
a374fef4 DH |
656 | * |
657 | * This routine is used by IR decoders when a repeat message which does | |
658 | * not include the necessary bits to reproduce the scancode has been | |
659 | * received. | |
660 | */ | |
ca86674b | 661 | void rc_repeat(struct rc_dev *dev) |
a374fef4 DH |
662 | { |
663 | unsigned long flags; | |
d57ea877 | 664 | unsigned int timeout = protocols[dev->last_protocol].repeat_period; |
6660de56 | 665 | |
d8b4b582 | 666 | spin_lock_irqsave(&dev->keylock, flags); |
a374fef4 | 667 | |
d8b4b582 | 668 | if (!dev->keypressed) |
a374fef4 | 669 | goto out; |
6660de56 | 670 | |
265a2988 DH |
671 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, dev->last_scancode); |
672 | input_sync(dev->input_dev); | |
673 | ||
d57ea877 | 674 | dev->keyup_jiffies = jiffies + msecs_to_jiffies(timeout); |
d8b4b582 | 675 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); |
a374fef4 DH |
676 | |
677 | out: | |
d8b4b582 | 678 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 679 | } |
ca86674b | 680 | EXPORT_SYMBOL_GPL(rc_repeat); |
6660de56 MCC |
681 | |
682 | /** | |
62c65031 | 683 | * ir_do_keydown() - internal function to process a keypress |
d8b4b582 | 684 | * @dev: the struct rc_dev descriptor of the device |
120703f9 | 685 | * @protocol: the protocol of the keypress |
62c65031 DH |
686 | * @scancode: the scancode of the keypress |
687 | * @keycode: the keycode of the keypress | |
688 | * @toggle: the toggle value of the keypress | |
6660de56 | 689 | * |
62c65031 DH |
690 | * This function is used internally to register a keypress, it must be |
691 | * called with keylock held. | |
6660de56 | 692 | */ |
6d741bfe | 693 | static void ir_do_keydown(struct rc_dev *dev, enum rc_proto protocol, |
120703f9 | 694 | u32 scancode, u32 keycode, u8 toggle) |
6660de56 | 695 | { |
99b0f3c9 | 696 | bool new_event = (!dev->keypressed || |
120703f9 | 697 | dev->last_protocol != protocol || |
99b0f3c9 | 698 | dev->last_scancode != scancode || |
120703f9 | 699 | dev->last_toggle != toggle); |
de142c32 SY |
700 | struct lirc_scancode sc = { |
701 | .scancode = scancode, .rc_proto = protocol, | |
702 | .flags = toggle ? LIRC_SCANCODE_FLAG_TOGGLE : 0, | |
703 | .keycode = keycode | |
704 | }; | |
705 | ||
706 | ir_lirc_scancode_event(dev, &sc); | |
6660de56 | 707 | |
98c32bcd JW |
708 | if (new_event && dev->keypressed) |
709 | ir_do_keyup(dev, false); | |
6660de56 | 710 | |
98c32bcd | 711 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode); |
a374fef4 | 712 | |
98c32bcd JW |
713 | if (new_event && keycode != KEY_RESERVED) { |
714 | /* Register a keypress */ | |
715 | dev->keypressed = true; | |
120703f9 | 716 | dev->last_protocol = protocol; |
98c32bcd JW |
717 | dev->last_scancode = scancode; |
718 | dev->last_toggle = toggle; | |
719 | dev->last_keycode = keycode; | |
720 | ||
25ec587c | 721 | IR_dprintk(1, "%s: key down event, key 0x%04x, protocol 0x%04x, scancode 0x%08x\n", |
518f4b26 | 722 | dev->device_name, keycode, protocol, scancode); |
98c32bcd | 723 | input_report_key(dev->input_dev, keycode, 1); |
70a2f912 JH |
724 | |
725 | led_trigger_event(led_feedback, LED_FULL); | |
98c32bcd | 726 | } |
ed4d3876 | 727 | |
d8b4b582 | 728 | input_sync(dev->input_dev); |
62c65031 | 729 | } |
6660de56 | 730 | |
62c65031 | 731 | /** |
ca86674b | 732 | * rc_keydown() - generates input event for a key press |
d8b4b582 | 733 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
734 | * @protocol: the protocol for the keypress |
735 | * @scancode: the scancode for the keypress | |
62c65031 DH |
736 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
737 | * support toggle values, this should be set to zero) | |
738 | * | |
d8b4b582 DH |
739 | * This routine is used to signal that a key has been pressed on the |
740 | * remote control. | |
62c65031 | 741 | */ |
6d741bfe SY |
742 | void rc_keydown(struct rc_dev *dev, enum rc_proto protocol, u32 scancode, |
743 | u8 toggle) | |
62c65031 DH |
744 | { |
745 | unsigned long flags; | |
ca86674b | 746 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 747 | |
d8b4b582 | 748 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 749 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
62c65031 | 750 | |
d8b4b582 | 751 | if (dev->keypressed) { |
d57ea877 SY |
752 | dev->keyup_jiffies = jiffies + |
753 | msecs_to_jiffies(protocols[protocol].repeat_period); | |
d8b4b582 | 754 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); |
62c65031 | 755 | } |
d8b4b582 | 756 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 757 | } |
ca86674b | 758 | EXPORT_SYMBOL_GPL(rc_keydown); |
6660de56 | 759 | |
62c65031 | 760 | /** |
ca86674b | 761 | * rc_keydown_notimeout() - generates input event for a key press without |
62c65031 | 762 | * an automatic keyup event at a later time |
d8b4b582 | 763 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
764 | * @protocol: the protocol for the keypress |
765 | * @scancode: the scancode for the keypress | |
62c65031 DH |
766 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
767 | * support toggle values, this should be set to zero) | |
768 | * | |
d8b4b582 | 769 | * This routine is used to signal that a key has been pressed on the |
ca86674b | 770 | * remote control. The driver must manually call rc_keyup() at a later stage. |
62c65031 | 771 | */ |
6d741bfe | 772 | void rc_keydown_notimeout(struct rc_dev *dev, enum rc_proto protocol, |
120703f9 | 773 | u32 scancode, u8 toggle) |
62c65031 DH |
774 | { |
775 | unsigned long flags; | |
ca86674b | 776 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 777 | |
d8b4b582 | 778 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 779 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
d8b4b582 | 780 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 781 | } |
ca86674b | 782 | EXPORT_SYMBOL_GPL(rc_keydown_notimeout); |
62c65031 | 783 | |
49a4b36a | 784 | /** |
6b514c4a SY |
785 | * rc_validate_scancode() - checks that a scancode is valid for a protocol. |
786 | * For nec, it should do the opposite of ir_nec_bytes_to_scancode() | |
49a4b36a SY |
787 | * @proto: protocol |
788 | * @scancode: scancode | |
789 | */ | |
790 | bool rc_validate_scancode(enum rc_proto proto, u32 scancode) | |
791 | { | |
792 | switch (proto) { | |
6b514c4a SY |
793 | /* |
794 | * NECX has a 16-bit address; if the lower 8 bits match the upper | |
795 | * 8 bits inverted, then the address would match regular nec. | |
796 | */ | |
49a4b36a SY |
797 | case RC_PROTO_NECX: |
798 | if ((((scancode >> 16) ^ ~(scancode >> 8)) & 0xff) == 0) | |
799 | return false; | |
800 | break; | |
6b514c4a SY |
801 | /* |
802 | * NEC32 has a 16 bit address and 16 bit command. If the lower 8 bits | |
803 | * of the command match the upper 8 bits inverted, then it would | |
804 | * be either NEC or NECX. | |
805 | */ | |
49a4b36a | 806 | case RC_PROTO_NEC32: |
6b514c4a | 807 | if ((((scancode >> 8) ^ ~scancode) & 0xff) == 0) |
49a4b36a SY |
808 | return false; |
809 | break; | |
6b514c4a SY |
810 | /* |
811 | * If the customer code (top 32-bit) is 0x800f, it is MCE else it | |
812 | * is regular mode-6a 32 bit | |
813 | */ | |
49a4b36a SY |
814 | case RC_PROTO_RC6_MCE: |
815 | if ((scancode & 0xffff0000) != 0x800f0000) | |
816 | return false; | |
817 | break; | |
818 | case RC_PROTO_RC6_6A_32: | |
819 | if ((scancode & 0xffff0000) == 0x800f0000) | |
820 | return false; | |
821 | break; | |
822 | default: | |
823 | break; | |
824 | } | |
825 | ||
826 | return true; | |
827 | } | |
828 | ||
b590c0bf SY |
829 | /** |
830 | * rc_validate_filter() - checks that the scancode and mask are valid and | |
831 | * provides sensible defaults | |
f423ccc1 | 832 | * @dev: the struct rc_dev descriptor of the device |
b590c0bf | 833 | * @filter: the scancode and mask |
f67f366c MCC |
834 | * |
835 | * return: 0 or -EINVAL if the filter is not valid | |
b590c0bf | 836 | */ |
f423ccc1 | 837 | static int rc_validate_filter(struct rc_dev *dev, |
b590c0bf SY |
838 | struct rc_scancode_filter *filter) |
839 | { | |
d57ea877 | 840 | u32 mask, s = filter->data; |
6d741bfe | 841 | enum rc_proto protocol = dev->wakeup_protocol; |
b590c0bf | 842 | |
d57ea877 | 843 | if (protocol >= ARRAY_SIZE(protocols)) |
2168b416 SY |
844 | return -EINVAL; |
845 | ||
d57ea877 SY |
846 | mask = protocols[protocol].scancode_bits; |
847 | ||
49a4b36a SY |
848 | if (!rc_validate_scancode(protocol, s)) |
849 | return -EINVAL; | |
b590c0bf | 850 | |
d57ea877 SY |
851 | filter->data &= mask; |
852 | filter->mask &= mask; | |
b590c0bf | 853 | |
f423ccc1 JH |
854 | /* |
855 | * If we have to raw encode the IR for wakeup, we cannot have a mask | |
856 | */ | |
d57ea877 | 857 | if (dev->encode_wakeup && filter->mask != 0 && filter->mask != mask) |
f423ccc1 JH |
858 | return -EINVAL; |
859 | ||
b590c0bf SY |
860 | return 0; |
861 | } | |
862 | ||
8b2ff320 SK |
863 | int rc_open(struct rc_dev *rdev) |
864 | { | |
865 | int rval = 0; | |
866 | ||
867 | if (!rdev) | |
868 | return -EINVAL; | |
869 | ||
870 | mutex_lock(&rdev->lock); | |
c73bbaa4 | 871 | |
cb84343f SY |
872 | if (!rdev->registered) { |
873 | rval = -ENODEV; | |
874 | } else { | |
875 | if (!rdev->users++ && rdev->open) | |
876 | rval = rdev->open(rdev); | |
8b2ff320 | 877 | |
cb84343f SY |
878 | if (rval) |
879 | rdev->users--; | |
880 | } | |
8b2ff320 SK |
881 | |
882 | mutex_unlock(&rdev->lock); | |
883 | ||
884 | return rval; | |
885 | } | |
8b2ff320 | 886 | |
d8b4b582 | 887 | static int ir_open(struct input_dev *idev) |
ef53a115 | 888 | { |
d8b4b582 | 889 | struct rc_dev *rdev = input_get_drvdata(idev); |
75543cce | 890 | |
8b2ff320 SK |
891 | return rc_open(rdev); |
892 | } | |
893 | ||
894 | void rc_close(struct rc_dev *rdev) | |
895 | { | |
896 | if (rdev) { | |
897 | mutex_lock(&rdev->lock); | |
898 | ||
cb84343f | 899 | if (!--rdev->users && rdev->close && rdev->registered) |
8b2ff320 SK |
900 | rdev->close(rdev); |
901 | ||
902 | mutex_unlock(&rdev->lock); | |
903 | } | |
ef53a115 | 904 | } |
d4b778d3 | 905 | |
d8b4b582 | 906 | static void ir_close(struct input_dev *idev) |
f6fc5049 | 907 | { |
d8b4b582 | 908 | struct rc_dev *rdev = input_get_drvdata(idev); |
8b2ff320 | 909 | rc_close(rdev); |
f6fc5049 | 910 | } |
f6fc5049 | 911 | |
bc2a6c57 | 912 | /* class for /sys/class/rc */ |
40fc5325 | 913 | static char *rc_devnode(struct device *dev, umode_t *mode) |
bc2a6c57 MCC |
914 | { |
915 | return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); | |
916 | } | |
917 | ||
40fc5325 | 918 | static struct class rc_class = { |
bc2a6c57 | 919 | .name = "rc", |
40fc5325 | 920 | .devnode = rc_devnode, |
bc2a6c57 MCC |
921 | }; |
922 | ||
c003ab1b DH |
923 | /* |
924 | * These are the protocol textual descriptions that are | |
925 | * used by the sysfs protocols file. Note that the order | |
926 | * of the entries is relevant. | |
927 | */ | |
53df8777 | 928 | static const struct { |
bc2a6c57 | 929 | u64 type; |
53df8777 | 930 | const char *name; |
9f0bf366 | 931 | const char *module_name; |
bc2a6c57 | 932 | } proto_names[] = { |
6d741bfe SY |
933 | { RC_PROTO_BIT_NONE, "none", NULL }, |
934 | { RC_PROTO_BIT_OTHER, "other", NULL }, | |
935 | { RC_PROTO_BIT_UNKNOWN, "unknown", NULL }, | |
936 | { RC_PROTO_BIT_RC5 | | |
937 | RC_PROTO_BIT_RC5X_20, "rc-5", "ir-rc5-decoder" }, | |
938 | { RC_PROTO_BIT_NEC | | |
939 | RC_PROTO_BIT_NECX | | |
940 | RC_PROTO_BIT_NEC32, "nec", "ir-nec-decoder" }, | |
941 | { RC_PROTO_BIT_RC6_0 | | |
942 | RC_PROTO_BIT_RC6_6A_20 | | |
943 | RC_PROTO_BIT_RC6_6A_24 | | |
944 | RC_PROTO_BIT_RC6_6A_32 | | |
945 | RC_PROTO_BIT_RC6_MCE, "rc-6", "ir-rc6-decoder" }, | |
946 | { RC_PROTO_BIT_JVC, "jvc", "ir-jvc-decoder" }, | |
947 | { RC_PROTO_BIT_SONY12 | | |
948 | RC_PROTO_BIT_SONY15 | | |
949 | RC_PROTO_BIT_SONY20, "sony", "ir-sony-decoder" }, | |
950 | { RC_PROTO_BIT_RC5_SZ, "rc-5-sz", "ir-rc5-decoder" }, | |
951 | { RC_PROTO_BIT_SANYO, "sanyo", "ir-sanyo-decoder" }, | |
952 | { RC_PROTO_BIT_SHARP, "sharp", "ir-sharp-decoder" }, | |
953 | { RC_PROTO_BIT_MCIR2_KBD | | |
954 | RC_PROTO_BIT_MCIR2_MSE, "mce_kbd", "ir-mce_kbd-decoder" }, | |
955 | { RC_PROTO_BIT_XMP, "xmp", "ir-xmp-decoder" }, | |
956 | { RC_PROTO_BIT_CEC, "cec", NULL }, | |
bc2a6c57 MCC |
957 | }; |
958 | ||
bc2a6c57 | 959 | /** |
ab88c66d JH |
960 | * struct rc_filter_attribute - Device attribute relating to a filter type. |
961 | * @attr: Device attribute. | |
962 | * @type: Filter type. | |
963 | * @mask: false for filter value, true for filter mask. | |
964 | */ | |
965 | struct rc_filter_attribute { | |
966 | struct device_attribute attr; | |
967 | enum rc_filter_type type; | |
968 | bool mask; | |
969 | }; | |
970 | #define to_rc_filter_attr(a) container_of(a, struct rc_filter_attribute, attr) | |
971 | ||
ab88c66d JH |
972 | #define RC_FILTER_ATTR(_name, _mode, _show, _store, _type, _mask) \ |
973 | struct rc_filter_attribute dev_attr_##_name = { \ | |
974 | .attr = __ATTR(_name, _mode, _show, _store), \ | |
975 | .type = (_type), \ | |
976 | .mask = (_mask), \ | |
977 | } | |
978 | ||
979 | /** | |
0751d33c | 980 | * show_protocols() - shows the current IR protocol(s) |
d8b4b582 | 981 | * @device: the device descriptor |
da6e162d | 982 | * @mattr: the device attribute struct |
bc2a6c57 MCC |
983 | * @buf: a pointer to the output buffer |
984 | * | |
985 | * This routine is a callback routine for input read the IR protocol type(s). | |
0751d33c | 986 | * it is trigged by reading /sys/class/rc/rc?/protocols. |
bc2a6c57 MCC |
987 | * It returns the protocol names of supported protocols. |
988 | * Enabled protocols are printed in brackets. | |
08aeb7c9 | 989 | * |
18726a34 DH |
990 | * dev->lock is taken to guard against races between |
991 | * store_protocols and show_protocols. | |
bc2a6c57 | 992 | */ |
d8b4b582 | 993 | static ssize_t show_protocols(struct device *device, |
bc2a6c57 MCC |
994 | struct device_attribute *mattr, char *buf) |
995 | { | |
d8b4b582 | 996 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 MCC |
997 | u64 allowed, enabled; |
998 | char *tmp = buf; | |
999 | int i; | |
1000 | ||
08aeb7c9 JW |
1001 | mutex_lock(&dev->lock); |
1002 | ||
0751d33c SY |
1003 | enabled = dev->enabled_protocols; |
1004 | allowed = dev->allowed_protocols; | |
1005 | if (dev->raw && !allowed) | |
1006 | allowed = ir_raw_get_allowed_protocols(); | |
bc2a6c57 | 1007 | |
da6e162d DH |
1008 | mutex_unlock(&dev->lock); |
1009 | ||
1010 | IR_dprintk(1, "%s: allowed - 0x%llx, enabled - 0x%llx\n", | |
1011 | __func__, (long long)allowed, (long long)enabled); | |
bc2a6c57 MCC |
1012 | |
1013 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
1014 | if (allowed & enabled & proto_names[i].type) | |
1015 | tmp += sprintf(tmp, "[%s] ", proto_names[i].name); | |
1016 | else if (allowed & proto_names[i].type) | |
1017 | tmp += sprintf(tmp, "%s ", proto_names[i].name); | |
c003ab1b DH |
1018 | |
1019 | if (allowed & proto_names[i].type) | |
1020 | allowed &= ~proto_names[i].type; | |
bc2a6c57 MCC |
1021 | } |
1022 | ||
a60d64b1 SY |
1023 | #ifdef CONFIG_LIRC |
1024 | if (dev->driver_type == RC_DRIVER_IR_RAW) | |
275ddb40 | 1025 | tmp += sprintf(tmp, "[lirc] "); |
a60d64b1 | 1026 | #endif |
275ddb40 | 1027 | |
bc2a6c57 MCC |
1028 | if (tmp != buf) |
1029 | tmp--; | |
1030 | *tmp = '\n'; | |
08aeb7c9 | 1031 | |
bc2a6c57 MCC |
1032 | return tmp + 1 - buf; |
1033 | } | |
1034 | ||
1035 | /** | |
da6e162d DH |
1036 | * parse_protocol_change() - parses a protocol change request |
1037 | * @protocols: pointer to the bitmask of current protocols | |
1038 | * @buf: pointer to the buffer with a list of changes | |
bc2a6c57 | 1039 | * |
da6e162d DH |
1040 | * Writing "+proto" will add a protocol to the protocol mask. |
1041 | * Writing "-proto" will remove a protocol from protocol mask. | |
bc2a6c57 MCC |
1042 | * Writing "proto" will enable only "proto". |
1043 | * Writing "none" will disable all protocols. | |
da6e162d | 1044 | * Returns the number of changes performed or a negative error code. |
bc2a6c57 | 1045 | */ |
da6e162d | 1046 | static int parse_protocol_change(u64 *protocols, const char *buf) |
bc2a6c57 | 1047 | { |
bc2a6c57 | 1048 | const char *tmp; |
da6e162d DH |
1049 | unsigned count = 0; |
1050 | bool enable, disable; | |
bc2a6c57 | 1051 | u64 mask; |
da6e162d | 1052 | int i; |
bc2a6c57 | 1053 | |
da6e162d | 1054 | while ((tmp = strsep((char **)&buf, " \n")) != NULL) { |
bc2a6c57 MCC |
1055 | if (!*tmp) |
1056 | break; | |
1057 | ||
1058 | if (*tmp == '+') { | |
1059 | enable = true; | |
1060 | disable = false; | |
1061 | tmp++; | |
1062 | } else if (*tmp == '-') { | |
1063 | enable = false; | |
1064 | disable = true; | |
1065 | tmp++; | |
1066 | } else { | |
1067 | enable = false; | |
1068 | disable = false; | |
1069 | } | |
1070 | ||
c003ab1b DH |
1071 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { |
1072 | if (!strcasecmp(tmp, proto_names[i].name)) { | |
1073 | mask = proto_names[i].type; | |
1074 | break; | |
bc2a6c57 | 1075 | } |
bc2a6c57 MCC |
1076 | } |
1077 | ||
c003ab1b | 1078 | if (i == ARRAY_SIZE(proto_names)) { |
275ddb40 DH |
1079 | if (!strcasecmp(tmp, "lirc")) |
1080 | mask = 0; | |
1081 | else { | |
1082 | IR_dprintk(1, "Unknown protocol: '%s'\n", tmp); | |
1083 | return -EINVAL; | |
1084 | } | |
c003ab1b DH |
1085 | } |
1086 | ||
1087 | count++; | |
1088 | ||
bc2a6c57 | 1089 | if (enable) |
da6e162d | 1090 | *protocols |= mask; |
bc2a6c57 | 1091 | else if (disable) |
da6e162d | 1092 | *protocols &= ~mask; |
bc2a6c57 | 1093 | else |
da6e162d | 1094 | *protocols = mask; |
bc2a6c57 MCC |
1095 | } |
1096 | ||
1097 | if (!count) { | |
1098 | IR_dprintk(1, "Protocol not specified\n"); | |
da6e162d DH |
1099 | return -EINVAL; |
1100 | } | |
1101 | ||
1102 | return count; | |
1103 | } | |
1104 | ||
0d39ab0b | 1105 | void ir_raw_load_modules(u64 *protocols) |
9f0bf366 HK |
1106 | { |
1107 | u64 available; | |
1108 | int i, ret; | |
1109 | ||
1110 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
6d741bfe SY |
1111 | if (proto_names[i].type == RC_PROTO_BIT_NONE || |
1112 | proto_names[i].type & (RC_PROTO_BIT_OTHER | | |
1113 | RC_PROTO_BIT_UNKNOWN)) | |
9f0bf366 HK |
1114 | continue; |
1115 | ||
1116 | available = ir_raw_get_allowed_protocols(); | |
1117 | if (!(*protocols & proto_names[i].type & ~available)) | |
1118 | continue; | |
1119 | ||
1120 | if (!proto_names[i].module_name) { | |
1121 | pr_err("Can't enable IR protocol %s\n", | |
1122 | proto_names[i].name); | |
1123 | *protocols &= ~proto_names[i].type; | |
1124 | continue; | |
1125 | } | |
1126 | ||
1127 | ret = request_module("%s", proto_names[i].module_name); | |
1128 | if (ret < 0) { | |
1129 | pr_err("Couldn't load IR protocol module %s\n", | |
1130 | proto_names[i].module_name); | |
1131 | *protocols &= ~proto_names[i].type; | |
1132 | continue; | |
1133 | } | |
1134 | msleep(20); | |
1135 | available = ir_raw_get_allowed_protocols(); | |
1136 | if (!(*protocols & proto_names[i].type & ~available)) | |
1137 | continue; | |
1138 | ||
8caebcdc | 1139 | pr_err("Loaded IR protocol module %s, but protocol %s still not available\n", |
9f0bf366 HK |
1140 | proto_names[i].module_name, |
1141 | proto_names[i].name); | |
1142 | *protocols &= ~proto_names[i].type; | |
1143 | } | |
1144 | } | |
1145 | ||
da6e162d DH |
1146 | /** |
1147 | * store_protocols() - changes the current/wakeup IR protocol(s) | |
1148 | * @device: the device descriptor | |
1149 | * @mattr: the device attribute struct | |
1150 | * @buf: a pointer to the input buffer | |
1151 | * @len: length of the input buffer | |
1152 | * | |
1153 | * This routine is for changing the IR protocol type. | |
1154 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]protocols. | |
1155 | * See parse_protocol_change() for the valid commands. | |
1156 | * Returns @len on success or a negative error code. | |
1157 | * | |
18726a34 DH |
1158 | * dev->lock is taken to guard against races between |
1159 | * store_protocols and show_protocols. | |
da6e162d DH |
1160 | */ |
1161 | static ssize_t store_protocols(struct device *device, | |
1162 | struct device_attribute *mattr, | |
1163 | const char *buf, size_t len) | |
1164 | { | |
1165 | struct rc_dev *dev = to_rc_dev(device); | |
da6e162d | 1166 | u64 *current_protocols; |
da6e162d | 1167 | struct rc_scancode_filter *filter; |
da6e162d DH |
1168 | u64 old_protocols, new_protocols; |
1169 | ssize_t rc; | |
1170 | ||
0751d33c SY |
1171 | IR_dprintk(1, "Normal protocol change requested\n"); |
1172 | current_protocols = &dev->enabled_protocols; | |
1173 | filter = &dev->scancode_filter; | |
da6e162d | 1174 | |
0751d33c | 1175 | if (!dev->change_protocol) { |
da6e162d DH |
1176 | IR_dprintk(1, "Protocol switching not supported\n"); |
1177 | return -EINVAL; | |
1178 | } | |
1179 | ||
1180 | mutex_lock(&dev->lock); | |
1181 | ||
1182 | old_protocols = *current_protocols; | |
1183 | new_protocols = old_protocols; | |
1184 | rc = parse_protocol_change(&new_protocols, buf); | |
1185 | if (rc < 0) | |
1186 | goto out; | |
1187 | ||
0751d33c | 1188 | rc = dev->change_protocol(dev, &new_protocols); |
da6e162d DH |
1189 | if (rc < 0) { |
1190 | IR_dprintk(1, "Error setting protocols to 0x%llx\n", | |
1191 | (long long)new_protocols); | |
08aeb7c9 | 1192 | goto out; |
bc2a6c57 MCC |
1193 | } |
1194 | ||
9f0bf366 HK |
1195 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1196 | ir_raw_load_modules(&new_protocols); | |
1197 | ||
983c5bd2 JH |
1198 | if (new_protocols != old_protocols) { |
1199 | *current_protocols = new_protocols; | |
1200 | IR_dprintk(1, "Protocols changed to 0x%llx\n", | |
1201 | (long long)new_protocols); | |
bc2a6c57 MCC |
1202 | } |
1203 | ||
6bea25af | 1204 | /* |
983c5bd2 JH |
1205 | * If a protocol change was attempted the filter may need updating, even |
1206 | * if the actual protocol mask hasn't changed (since the driver may have | |
1207 | * cleared the filter). | |
6bea25af JH |
1208 | * Try setting the same filter with the new protocol (if any). |
1209 | * Fall back to clearing the filter. | |
1210 | */ | |
0751d33c | 1211 | if (dev->s_filter && filter->mask) { |
da6e162d | 1212 | if (new_protocols) |
0751d33c | 1213 | rc = dev->s_filter(dev, filter); |
da6e162d DH |
1214 | else |
1215 | rc = -1; | |
6bea25af | 1216 | |
da6e162d DH |
1217 | if (rc < 0) { |
1218 | filter->data = 0; | |
1219 | filter->mask = 0; | |
0751d33c | 1220 | dev->s_filter(dev, filter); |
da6e162d | 1221 | } |
6bea25af JH |
1222 | } |
1223 | ||
da6e162d | 1224 | rc = len; |
08aeb7c9 JW |
1225 | |
1226 | out: | |
1227 | mutex_unlock(&dev->lock); | |
da6e162d | 1228 | return rc; |
bc2a6c57 MCC |
1229 | } |
1230 | ||
00942d1a JH |
1231 | /** |
1232 | * show_filter() - shows the current scancode filter value or mask | |
1233 | * @device: the device descriptor | |
1234 | * @attr: the device attribute struct | |
1235 | * @buf: a pointer to the output buffer | |
1236 | * | |
1237 | * This routine is a callback routine to read a scancode filter value or mask. | |
1238 | * It is trigged by reading /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1239 | * It prints the current scancode filter value or mask of the appropriate filter | |
1240 | * type in hexadecimal into @buf and returns the size of the buffer. | |
1241 | * | |
1242 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1243 | * compared against input scancodes and non-matching scancodes are discarded. | |
1244 | * | |
18726a34 | 1245 | * dev->lock is taken to guard against races between |
00942d1a JH |
1246 | * store_filter and show_filter. |
1247 | */ | |
1248 | static ssize_t show_filter(struct device *device, | |
1249 | struct device_attribute *attr, | |
1250 | char *buf) | |
1251 | { | |
1252 | struct rc_dev *dev = to_rc_dev(device); | |
1253 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1254 | struct rc_scancode_filter *filter; |
00942d1a JH |
1255 | u32 val; |
1256 | ||
c73bbaa4 | 1257 | mutex_lock(&dev->lock); |
c73bbaa4 | 1258 | |
da6e162d | 1259 | if (fattr->type == RC_FILTER_NORMAL) |
c5540fbb | 1260 | filter = &dev->scancode_filter; |
da6e162d | 1261 | else |
c5540fbb | 1262 | filter = &dev->scancode_wakeup_filter; |
da6e162d | 1263 | |
da6e162d DH |
1264 | if (fattr->mask) |
1265 | val = filter->mask; | |
00942d1a | 1266 | else |
da6e162d | 1267 | val = filter->data; |
00942d1a JH |
1268 | mutex_unlock(&dev->lock); |
1269 | ||
1270 | return sprintf(buf, "%#x\n", val); | |
1271 | } | |
1272 | ||
1273 | /** | |
1274 | * store_filter() - changes the scancode filter value | |
1275 | * @device: the device descriptor | |
1276 | * @attr: the device attribute struct | |
1277 | * @buf: a pointer to the input buffer | |
1278 | * @len: length of the input buffer | |
1279 | * | |
1280 | * This routine is for changing a scancode filter value or mask. | |
1281 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1282 | * Returns -EINVAL if an invalid filter value for the current protocol was | |
1283 | * specified or if scancode filtering is not supported by the driver, otherwise | |
1284 | * returns @len. | |
1285 | * | |
1286 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1287 | * compared against input scancodes and non-matching scancodes are discarded. | |
1288 | * | |
18726a34 | 1289 | * dev->lock is taken to guard against races between |
00942d1a JH |
1290 | * store_filter and show_filter. |
1291 | */ | |
1292 | static ssize_t store_filter(struct device *device, | |
1293 | struct device_attribute *attr, | |
da6e162d | 1294 | const char *buf, size_t len) |
00942d1a JH |
1295 | { |
1296 | struct rc_dev *dev = to_rc_dev(device); | |
1297 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1298 | struct rc_scancode_filter new_filter, *filter; |
00942d1a JH |
1299 | int ret; |
1300 | unsigned long val; | |
23c843b5 | 1301 | int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter); |
00942d1a | 1302 | |
00942d1a JH |
1303 | ret = kstrtoul(buf, 0, &val); |
1304 | if (ret < 0) | |
1305 | return ret; | |
1306 | ||
da6e162d DH |
1307 | if (fattr->type == RC_FILTER_NORMAL) { |
1308 | set_filter = dev->s_filter; | |
c5540fbb | 1309 | filter = &dev->scancode_filter; |
da6e162d DH |
1310 | } else { |
1311 | set_filter = dev->s_wakeup_filter; | |
c5540fbb | 1312 | filter = &dev->scancode_wakeup_filter; |
da6e162d DH |
1313 | } |
1314 | ||
99b0f3c9 DH |
1315 | if (!set_filter) |
1316 | return -EINVAL; | |
00942d1a JH |
1317 | |
1318 | mutex_lock(&dev->lock); | |
1319 | ||
da6e162d | 1320 | new_filter = *filter; |
00942d1a | 1321 | if (fattr->mask) |
da6e162d | 1322 | new_filter.mask = val; |
00942d1a | 1323 | else |
da6e162d | 1324 | new_filter.data = val; |
23c843b5 | 1325 | |
0751d33c | 1326 | if (fattr->type == RC_FILTER_WAKEUP) { |
b590c0bf SY |
1327 | /* |
1328 | * Refuse to set a filter unless a protocol is enabled | |
1329 | * and the filter is valid for that protocol | |
1330 | */ | |
6d741bfe | 1331 | if (dev->wakeup_protocol != RC_PROTO_UNKNOWN) |
f423ccc1 | 1332 | ret = rc_validate_filter(dev, &new_filter); |
b590c0bf | 1333 | else |
0751d33c | 1334 | ret = -EINVAL; |
b590c0bf SY |
1335 | |
1336 | if (ret != 0) | |
0751d33c | 1337 | goto unlock; |
0751d33c SY |
1338 | } |
1339 | ||
1340 | if (fattr->type == RC_FILTER_NORMAL && !dev->enabled_protocols && | |
1341 | val) { | |
6bea25af JH |
1342 | /* refuse to set a filter unless a protocol is enabled */ |
1343 | ret = -EINVAL; | |
1344 | goto unlock; | |
1345 | } | |
23c843b5 | 1346 | |
da6e162d | 1347 | ret = set_filter(dev, &new_filter); |
99b0f3c9 DH |
1348 | if (ret < 0) |
1349 | goto unlock; | |
00942d1a | 1350 | |
da6e162d | 1351 | *filter = new_filter; |
00942d1a JH |
1352 | |
1353 | unlock: | |
1354 | mutex_unlock(&dev->lock); | |
da6e162d | 1355 | return (ret < 0) ? ret : len; |
00942d1a JH |
1356 | } |
1357 | ||
0751d33c SY |
1358 | /** |
1359 | * show_wakeup_protocols() - shows the wakeup IR protocol | |
1360 | * @device: the device descriptor | |
1361 | * @mattr: the device attribute struct | |
1362 | * @buf: a pointer to the output buffer | |
1363 | * | |
1364 | * This routine is a callback routine for input read the IR protocol type(s). | |
1365 | * it is trigged by reading /sys/class/rc/rc?/wakeup_protocols. | |
1366 | * It returns the protocol names of supported protocols. | |
1367 | * The enabled protocols are printed in brackets. | |
1368 | * | |
18726a34 DH |
1369 | * dev->lock is taken to guard against races between |
1370 | * store_wakeup_protocols and show_wakeup_protocols. | |
0751d33c SY |
1371 | */ |
1372 | static ssize_t show_wakeup_protocols(struct device *device, | |
1373 | struct device_attribute *mattr, | |
1374 | char *buf) | |
1375 | { | |
1376 | struct rc_dev *dev = to_rc_dev(device); | |
1377 | u64 allowed; | |
6d741bfe | 1378 | enum rc_proto enabled; |
0751d33c SY |
1379 | char *tmp = buf; |
1380 | int i; | |
1381 | ||
0751d33c SY |
1382 | mutex_lock(&dev->lock); |
1383 | ||
1384 | allowed = dev->allowed_wakeup_protocols; | |
1385 | enabled = dev->wakeup_protocol; | |
1386 | ||
1387 | mutex_unlock(&dev->lock); | |
1388 | ||
1389 | IR_dprintk(1, "%s: allowed - 0x%llx, enabled - %d\n", | |
1390 | __func__, (long long)allowed, enabled); | |
1391 | ||
d57ea877 | 1392 | for (i = 0; i < ARRAY_SIZE(protocols); i++) { |
0751d33c SY |
1393 | if (allowed & (1ULL << i)) { |
1394 | if (i == enabled) | |
d57ea877 | 1395 | tmp += sprintf(tmp, "[%s] ", protocols[i].name); |
0751d33c | 1396 | else |
d57ea877 | 1397 | tmp += sprintf(tmp, "%s ", protocols[i].name); |
0751d33c SY |
1398 | } |
1399 | } | |
1400 | ||
1401 | if (tmp != buf) | |
1402 | tmp--; | |
1403 | *tmp = '\n'; | |
1404 | ||
1405 | return tmp + 1 - buf; | |
1406 | } | |
1407 | ||
1408 | /** | |
1409 | * store_wakeup_protocols() - changes the wakeup IR protocol(s) | |
1410 | * @device: the device descriptor | |
1411 | * @mattr: the device attribute struct | |
1412 | * @buf: a pointer to the input buffer | |
1413 | * @len: length of the input buffer | |
1414 | * | |
1415 | * This routine is for changing the IR protocol type. | |
1416 | * It is trigged by writing to /sys/class/rc/rc?/wakeup_protocols. | |
1417 | * Returns @len on success or a negative error code. | |
1418 | * | |
18726a34 DH |
1419 | * dev->lock is taken to guard against races between |
1420 | * store_wakeup_protocols and show_wakeup_protocols. | |
0751d33c SY |
1421 | */ |
1422 | static ssize_t store_wakeup_protocols(struct device *device, | |
1423 | struct device_attribute *mattr, | |
1424 | const char *buf, size_t len) | |
1425 | { | |
1426 | struct rc_dev *dev = to_rc_dev(device); | |
6d741bfe | 1427 | enum rc_proto protocol; |
0751d33c SY |
1428 | ssize_t rc; |
1429 | u64 allowed; | |
1430 | int i; | |
1431 | ||
0751d33c SY |
1432 | mutex_lock(&dev->lock); |
1433 | ||
1434 | allowed = dev->allowed_wakeup_protocols; | |
1435 | ||
1436 | if (sysfs_streq(buf, "none")) { | |
6d741bfe | 1437 | protocol = RC_PROTO_UNKNOWN; |
0751d33c | 1438 | } else { |
d57ea877 | 1439 | for (i = 0; i < ARRAY_SIZE(protocols); i++) { |
0751d33c | 1440 | if ((allowed & (1ULL << i)) && |
d57ea877 | 1441 | sysfs_streq(buf, protocols[i].name)) { |
0751d33c SY |
1442 | protocol = i; |
1443 | break; | |
1444 | } | |
1445 | } | |
1446 | ||
d57ea877 | 1447 | if (i == ARRAY_SIZE(protocols)) { |
0751d33c SY |
1448 | rc = -EINVAL; |
1449 | goto out; | |
1450 | } | |
f423ccc1 JH |
1451 | |
1452 | if (dev->encode_wakeup) { | |
1453 | u64 mask = 1ULL << protocol; | |
1454 | ||
1455 | ir_raw_load_modules(&mask); | |
1456 | if (!mask) { | |
1457 | rc = -EINVAL; | |
1458 | goto out; | |
1459 | } | |
1460 | } | |
0751d33c SY |
1461 | } |
1462 | ||
1463 | if (dev->wakeup_protocol != protocol) { | |
1464 | dev->wakeup_protocol = protocol; | |
1465 | IR_dprintk(1, "Wakeup protocol changed to %d\n", protocol); | |
1466 | ||
6d741bfe | 1467 | if (protocol == RC_PROTO_RC6_MCE) |
0751d33c SY |
1468 | dev->scancode_wakeup_filter.data = 0x800f0000; |
1469 | else | |
1470 | dev->scancode_wakeup_filter.data = 0; | |
1471 | dev->scancode_wakeup_filter.mask = 0; | |
1472 | ||
1473 | rc = dev->s_wakeup_filter(dev, &dev->scancode_wakeup_filter); | |
1474 | if (rc == 0) | |
1475 | rc = len; | |
1476 | } else { | |
1477 | rc = len; | |
1478 | } | |
1479 | ||
1480 | out: | |
1481 | mutex_unlock(&dev->lock); | |
1482 | return rc; | |
1483 | } | |
1484 | ||
d8b4b582 DH |
1485 | static void rc_dev_release(struct device *device) |
1486 | { | |
47cae1e1 MK |
1487 | struct rc_dev *dev = to_rc_dev(device); |
1488 | ||
1489 | kfree(dev); | |
d8b4b582 DH |
1490 | } |
1491 | ||
bc2a6c57 MCC |
1492 | #define ADD_HOTPLUG_VAR(fmt, val...) \ |
1493 | do { \ | |
1494 | int err = add_uevent_var(env, fmt, val); \ | |
1495 | if (err) \ | |
1496 | return err; \ | |
1497 | } while (0) | |
1498 | ||
1499 | static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env) | |
1500 | { | |
d8b4b582 | 1501 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 | 1502 | |
b088ba65 MCC |
1503 | if (dev->rc_map.name) |
1504 | ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name); | |
d8b4b582 DH |
1505 | if (dev->driver_name) |
1506 | ADD_HOTPLUG_VAR("DRV_NAME=%s", dev->driver_name); | |
b9f407e3 SY |
1507 | if (dev->device_name) |
1508 | ADD_HOTPLUG_VAR("DEV_NAME=%s", dev->device_name); | |
bc2a6c57 MCC |
1509 | |
1510 | return 0; | |
1511 | } | |
1512 | ||
1513 | /* | |
1514 | * Static device attribute struct with the sysfs attributes for IR's | |
1515 | */ | |
6d75db30 SY |
1516 | static struct device_attribute dev_attr_ro_protocols = |
1517 | __ATTR(protocols, 0444, show_protocols, NULL); | |
1518 | static struct device_attribute dev_attr_rw_protocols = | |
1519 | __ATTR(protocols, 0644, show_protocols, store_protocols); | |
0751d33c SY |
1520 | static DEVICE_ATTR(wakeup_protocols, 0644, show_wakeup_protocols, |
1521 | store_wakeup_protocols); | |
00942d1a JH |
1522 | static RC_FILTER_ATTR(filter, S_IRUGO|S_IWUSR, |
1523 | show_filter, store_filter, RC_FILTER_NORMAL, false); | |
1524 | static RC_FILTER_ATTR(filter_mask, S_IRUGO|S_IWUSR, | |
1525 | show_filter, store_filter, RC_FILTER_NORMAL, true); | |
1526 | static RC_FILTER_ATTR(wakeup_filter, S_IRUGO|S_IWUSR, | |
1527 | show_filter, store_filter, RC_FILTER_WAKEUP, false); | |
1528 | static RC_FILTER_ATTR(wakeup_filter_mask, S_IRUGO|S_IWUSR, | |
1529 | show_filter, store_filter, RC_FILTER_WAKEUP, true); | |
bc2a6c57 | 1530 | |
6d75db30 SY |
1531 | static struct attribute *rc_dev_rw_protocol_attrs[] = { |
1532 | &dev_attr_rw_protocols.attr, | |
99b0f3c9 DH |
1533 | NULL, |
1534 | }; | |
1535 | ||
6d75db30 SY |
1536 | static const struct attribute_group rc_dev_rw_protocol_attr_grp = { |
1537 | .attrs = rc_dev_rw_protocol_attrs, | |
1538 | }; | |
1539 | ||
1540 | static struct attribute *rc_dev_ro_protocol_attrs[] = { | |
1541 | &dev_attr_ro_protocols.attr, | |
1542 | NULL, | |
1543 | }; | |
1544 | ||
1545 | static const struct attribute_group rc_dev_ro_protocol_attr_grp = { | |
1546 | .attrs = rc_dev_ro_protocol_attrs, | |
99b0f3c9 DH |
1547 | }; |
1548 | ||
99b0f3c9 | 1549 | static struct attribute *rc_dev_filter_attrs[] = { |
00942d1a JH |
1550 | &dev_attr_filter.attr.attr, |
1551 | &dev_attr_filter_mask.attr.attr, | |
bc2a6c57 MCC |
1552 | NULL, |
1553 | }; | |
1554 | ||
db68102c | 1555 | static const struct attribute_group rc_dev_filter_attr_grp = { |
99b0f3c9 | 1556 | .attrs = rc_dev_filter_attrs, |
bc2a6c57 MCC |
1557 | }; |
1558 | ||
99b0f3c9 DH |
1559 | static struct attribute *rc_dev_wakeup_filter_attrs[] = { |
1560 | &dev_attr_wakeup_filter.attr.attr, | |
1561 | &dev_attr_wakeup_filter_mask.attr.attr, | |
0751d33c | 1562 | &dev_attr_wakeup_protocols.attr, |
99b0f3c9 DH |
1563 | NULL, |
1564 | }; | |
1565 | ||
db68102c | 1566 | static const struct attribute_group rc_dev_wakeup_filter_attr_grp = { |
99b0f3c9 | 1567 | .attrs = rc_dev_wakeup_filter_attrs, |
bc2a6c57 MCC |
1568 | }; |
1569 | ||
f03f02f9 | 1570 | static const struct device_type rc_dev_type = { |
d8b4b582 | 1571 | .release = rc_dev_release, |
bc2a6c57 MCC |
1572 | .uevent = rc_dev_uevent, |
1573 | }; | |
1574 | ||
0f7499fd | 1575 | struct rc_dev *rc_allocate_device(enum rc_driver_type type) |
bc2a6c57 | 1576 | { |
d8b4b582 | 1577 | struct rc_dev *dev; |
bc2a6c57 | 1578 | |
d8b4b582 DH |
1579 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
1580 | if (!dev) | |
1581 | return NULL; | |
1582 | ||
d34aee10 AS |
1583 | if (type != RC_DRIVER_IR_RAW_TX) { |
1584 | dev->input_dev = input_allocate_device(); | |
1585 | if (!dev->input_dev) { | |
1586 | kfree(dev); | |
1587 | return NULL; | |
1588 | } | |
1589 | ||
1590 | dev->input_dev->getkeycode = ir_getkeycode; | |
1591 | dev->input_dev->setkeycode = ir_setkeycode; | |
1592 | input_set_drvdata(dev->input_dev, dev); | |
d8b4b582 | 1593 | |
b17ec78a | 1594 | timer_setup(&dev->timer_keyup, ir_timer_keyup, 0); |
d8b4b582 | 1595 | |
d34aee10 AS |
1596 | spin_lock_init(&dev->rc_map.lock); |
1597 | spin_lock_init(&dev->keylock); | |
1598 | } | |
08aeb7c9 | 1599 | mutex_init(&dev->lock); |
bc2a6c57 | 1600 | |
d8b4b582 | 1601 | dev->dev.type = &rc_dev_type; |
40fc5325 | 1602 | dev->dev.class = &rc_class; |
d8b4b582 DH |
1603 | device_initialize(&dev->dev); |
1604 | ||
0f7499fd AS |
1605 | dev->driver_type = type; |
1606 | ||
d8b4b582 DH |
1607 | __module_get(THIS_MODULE); |
1608 | return dev; | |
1609 | } | |
1610 | EXPORT_SYMBOL_GPL(rc_allocate_device); | |
1611 | ||
1612 | void rc_free_device(struct rc_dev *dev) | |
bc2a6c57 | 1613 | { |
b05681b9 MCC |
1614 | if (!dev) |
1615 | return; | |
1616 | ||
3dd94f00 | 1617 | input_free_device(dev->input_dev); |
b05681b9 MCC |
1618 | |
1619 | put_device(&dev->dev); | |
1620 | ||
47cae1e1 MK |
1621 | /* kfree(dev) will be called by the callback function |
1622 | rc_dev_release() */ | |
1623 | ||
b05681b9 | 1624 | module_put(THIS_MODULE); |
d8b4b582 DH |
1625 | } |
1626 | EXPORT_SYMBOL_GPL(rc_free_device); | |
1627 | ||
ddbf7d5a HK |
1628 | static void devm_rc_alloc_release(struct device *dev, void *res) |
1629 | { | |
1630 | rc_free_device(*(struct rc_dev **)res); | |
1631 | } | |
1632 | ||
0f7499fd AS |
1633 | struct rc_dev *devm_rc_allocate_device(struct device *dev, |
1634 | enum rc_driver_type type) | |
ddbf7d5a HK |
1635 | { |
1636 | struct rc_dev **dr, *rc; | |
1637 | ||
1638 | dr = devres_alloc(devm_rc_alloc_release, sizeof(*dr), GFP_KERNEL); | |
1639 | if (!dr) | |
1640 | return NULL; | |
1641 | ||
0f7499fd | 1642 | rc = rc_allocate_device(type); |
ddbf7d5a HK |
1643 | if (!rc) { |
1644 | devres_free(dr); | |
1645 | return NULL; | |
1646 | } | |
1647 | ||
1648 | rc->dev.parent = dev; | |
1649 | rc->managed_alloc = true; | |
1650 | *dr = rc; | |
1651 | devres_add(dev, dr); | |
1652 | ||
1653 | return rc; | |
1654 | } | |
1655 | EXPORT_SYMBOL_GPL(devm_rc_allocate_device); | |
1656 | ||
f56928ab | 1657 | static int rc_prepare_rx_device(struct rc_dev *dev) |
d8b4b582 | 1658 | { |
fcb13097 | 1659 | int rc; |
7ff2c2bc | 1660 | struct rc_map *rc_map; |
6d741bfe | 1661 | u64 rc_proto; |
bc2a6c57 | 1662 | |
7ff2c2bc | 1663 | if (!dev->map_name) |
d8b4b582 | 1664 | return -EINVAL; |
bc2a6c57 | 1665 | |
d100e659 | 1666 | rc_map = rc_map_get(dev->map_name); |
b088ba65 | 1667 | if (!rc_map) |
d100e659 | 1668 | rc_map = rc_map_get(RC_MAP_EMPTY); |
b088ba65 | 1669 | if (!rc_map || !rc_map->scan || rc_map->size == 0) |
d8b4b582 DH |
1670 | return -EINVAL; |
1671 | ||
7ff2c2bc AS |
1672 | rc = ir_setkeytable(dev, rc_map); |
1673 | if (rc) | |
1674 | return rc; | |
1675 | ||
6d741bfe | 1676 | rc_proto = BIT_ULL(rc_map->rc_proto); |
7ff2c2bc | 1677 | |
831c4c81 SY |
1678 | if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol) |
1679 | dev->enabled_protocols = dev->allowed_protocols; | |
1680 | ||
41380868 | 1681 | if (dev->change_protocol) { |
6d741bfe | 1682 | rc = dev->change_protocol(dev, &rc_proto); |
7ff2c2bc AS |
1683 | if (rc < 0) |
1684 | goto out_table; | |
6d741bfe | 1685 | dev->enabled_protocols = rc_proto; |
7ff2c2bc AS |
1686 | } |
1687 | ||
41380868 | 1688 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
6d741bfe | 1689 | ir_raw_load_modules(&rc_proto); |
41380868 | 1690 | |
d8b4b582 DH |
1691 | set_bit(EV_KEY, dev->input_dev->evbit); |
1692 | set_bit(EV_REP, dev->input_dev->evbit); | |
1693 | set_bit(EV_MSC, dev->input_dev->evbit); | |
1694 | set_bit(MSC_SCAN, dev->input_dev->mscbit); | |
1695 | if (dev->open) | |
1696 | dev->input_dev->open = ir_open; | |
1697 | if (dev->close) | |
1698 | dev->input_dev->close = ir_close; | |
1699 | ||
b2aceb73 DH |
1700 | dev->input_dev->dev.parent = &dev->dev; |
1701 | memcpy(&dev->input_dev->id, &dev->input_id, sizeof(dev->input_id)); | |
1702 | dev->input_dev->phys = dev->input_phys; | |
518f4b26 | 1703 | dev->input_dev->name = dev->device_name; |
b2aceb73 | 1704 | |
f56928ab DH |
1705 | return 0; |
1706 | ||
1707 | out_table: | |
1708 | ir_free_table(&dev->rc_map); | |
1709 | ||
1710 | return rc; | |
1711 | } | |
1712 | ||
1713 | static int rc_setup_rx_device(struct rc_dev *dev) | |
1714 | { | |
1715 | int rc; | |
1716 | ||
b2aceb73 DH |
1717 | /* rc_open will be called here */ |
1718 | rc = input_register_device(dev->input_dev); | |
1719 | if (rc) | |
f56928ab | 1720 | return rc; |
b2aceb73 | 1721 | |
7ff2c2bc AS |
1722 | /* |
1723 | * Default delay of 250ms is too short for some protocols, especially | |
1724 | * since the timeout is currently set to 250ms. Increase it to 500ms, | |
1725 | * to avoid wrong repetition of the keycodes. Note that this must be | |
1726 | * set after the call to input_register_device(). | |
1727 | */ | |
1728 | dev->input_dev->rep[REP_DELAY] = 500; | |
1729 | ||
1730 | /* | |
1731 | * As a repeat event on protocols like RC-5 and NEC take as long as | |
1732 | * 110/114ms, using 33ms as a repeat period is not the right thing | |
1733 | * to do. | |
1734 | */ | |
1735 | dev->input_dev->rep[REP_PERIOD] = 125; | |
1736 | ||
7ff2c2bc | 1737 | return 0; |
7ff2c2bc AS |
1738 | } |
1739 | ||
1740 | static void rc_free_rx_device(struct rc_dev *dev) | |
1741 | { | |
f56928ab | 1742 | if (!dev) |
7ff2c2bc AS |
1743 | return; |
1744 | ||
f56928ab DH |
1745 | if (dev->input_dev) { |
1746 | input_unregister_device(dev->input_dev); | |
1747 | dev->input_dev = NULL; | |
1748 | } | |
7ff2c2bc | 1749 | |
f56928ab | 1750 | ir_free_table(&dev->rc_map); |
7ff2c2bc AS |
1751 | } |
1752 | ||
1753 | int rc_register_device(struct rc_dev *dev) | |
1754 | { | |
7ff2c2bc AS |
1755 | const char *path; |
1756 | int attr = 0; | |
1757 | int minor; | |
1758 | int rc; | |
1759 | ||
1760 | if (!dev) | |
1761 | return -EINVAL; | |
1762 | ||
fcb13097 DH |
1763 | minor = ida_simple_get(&rc_ida, 0, RC_DEV_MAX, GFP_KERNEL); |
1764 | if (minor < 0) | |
1765 | return minor; | |
1766 | ||
1767 | dev->minor = minor; | |
1768 | dev_set_name(&dev->dev, "rc%u", dev->minor); | |
1769 | dev_set_drvdata(&dev->dev, dev); | |
587d1b06 | 1770 | |
99b0f3c9 | 1771 | dev->dev.groups = dev->sysfs_groups; |
6d75db30 SY |
1772 | if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol) |
1773 | dev->sysfs_groups[attr++] = &rc_dev_ro_protocol_attr_grp; | |
1774 | else if (dev->driver_type != RC_DRIVER_IR_RAW_TX) | |
1775 | dev->sysfs_groups[attr++] = &rc_dev_rw_protocol_attr_grp; | |
99b0f3c9 | 1776 | if (dev->s_filter) |
120703f9 | 1777 | dev->sysfs_groups[attr++] = &rc_dev_filter_attr_grp; |
99b0f3c9 DH |
1778 | if (dev->s_wakeup_filter) |
1779 | dev->sysfs_groups[attr++] = &rc_dev_wakeup_filter_attr_grp; | |
99b0f3c9 DH |
1780 | dev->sysfs_groups[attr++] = NULL; |
1781 | ||
a60d64b1 | 1782 | if (dev->driver_type == RC_DRIVER_IR_RAW) { |
f56928ab DH |
1783 | rc = ir_raw_event_prepare(dev); |
1784 | if (rc < 0) | |
1785 | goto out_minor; | |
1786 | } | |
1787 | ||
1788 | if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { | |
1789 | rc = rc_prepare_rx_device(dev); | |
1790 | if (rc) | |
1791 | goto out_raw; | |
1792 | } | |
1793 | ||
d8b4b582 DH |
1794 | rc = device_add(&dev->dev); |
1795 | if (rc) | |
f56928ab | 1796 | goto out_rx_free; |
bc2a6c57 | 1797 | |
d8b4b582 | 1798 | path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL); |
4dc0e908 | 1799 | dev_info(&dev->dev, "%s as %s\n", |
518f4b26 | 1800 | dev->device_name ?: "Unspecified device", path ?: "N/A"); |
bc2a6c57 MCC |
1801 | kfree(path); |
1802 | ||
f56928ab DH |
1803 | if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { |
1804 | rc = rc_setup_rx_device(dev); | |
1805 | if (rc) | |
1806 | goto out_dev; | |
1807 | } | |
1808 | ||
a60d64b1 SY |
1809 | /* Ensure that the lirc kfifo is setup before we start the thread */ |
1810 | if (dev->driver_type != RC_DRIVER_SCANCODE) { | |
1811 | rc = ir_lirc_register(dev); | |
d8b4b582 | 1812 | if (rc < 0) |
f56928ab | 1813 | goto out_rx; |
d8b4b582 DH |
1814 | } |
1815 | ||
a60d64b1 SY |
1816 | if (dev->driver_type == RC_DRIVER_IR_RAW) { |
1817 | rc = ir_raw_event_register(dev); | |
1818 | if (rc < 0) | |
1819 | goto out_lirc; | |
1820 | } | |
1821 | ||
7790e81f SY |
1822 | dev->registered = true; |
1823 | ||
7ff2c2bc | 1824 | IR_dprintk(1, "Registered rc%u (driver: %s)\n", |
fcb13097 | 1825 | dev->minor, |
7ff2c2bc | 1826 | dev->driver_name ? dev->driver_name : "unknown"); |
d8b4b582 | 1827 | |
bc2a6c57 | 1828 | return 0; |
d8b4b582 | 1829 | |
a60d64b1 SY |
1830 | out_lirc: |
1831 | if (dev->driver_type != RC_DRIVER_SCANCODE) | |
1832 | ir_lirc_unregister(dev); | |
f56928ab DH |
1833 | out_rx: |
1834 | rc_free_rx_device(dev); | |
d8b4b582 DH |
1835 | out_dev: |
1836 | device_del(&dev->dev); | |
f56928ab DH |
1837 | out_rx_free: |
1838 | ir_free_table(&dev->rc_map); | |
1839 | out_raw: | |
1840 | ir_raw_event_free(dev); | |
1841 | out_minor: | |
fcb13097 | 1842 | ida_simple_remove(&rc_ida, minor); |
d8b4b582 | 1843 | return rc; |
bc2a6c57 | 1844 | } |
d8b4b582 | 1845 | EXPORT_SYMBOL_GPL(rc_register_device); |
bc2a6c57 | 1846 | |
ddbf7d5a HK |
1847 | static void devm_rc_release(struct device *dev, void *res) |
1848 | { | |
1849 | rc_unregister_device(*(struct rc_dev **)res); | |
1850 | } | |
1851 | ||
1852 | int devm_rc_register_device(struct device *parent, struct rc_dev *dev) | |
1853 | { | |
1854 | struct rc_dev **dr; | |
1855 | int ret; | |
1856 | ||
1857 | dr = devres_alloc(devm_rc_release, sizeof(*dr), GFP_KERNEL); | |
1858 | if (!dr) | |
1859 | return -ENOMEM; | |
1860 | ||
1861 | ret = rc_register_device(dev); | |
1862 | if (ret) { | |
1863 | devres_free(dr); | |
1864 | return ret; | |
1865 | } | |
1866 | ||
1867 | *dr = dev; | |
1868 | devres_add(parent, dr); | |
1869 | ||
1870 | return 0; | |
1871 | } | |
1872 | EXPORT_SYMBOL_GPL(devm_rc_register_device); | |
1873 | ||
d8b4b582 | 1874 | void rc_unregister_device(struct rc_dev *dev) |
bc2a6c57 | 1875 | { |
d8b4b582 DH |
1876 | if (!dev) |
1877 | return; | |
bc2a6c57 | 1878 | |
d8b4b582 | 1879 | del_timer_sync(&dev->timer_keyup); |
bc2a6c57 | 1880 | |
d8b4b582 DH |
1881 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1882 | ir_raw_event_unregister(dev); | |
1883 | ||
7ff2c2bc | 1884 | rc_free_rx_device(dev); |
d8b4b582 | 1885 | |
7790e81f SY |
1886 | mutex_lock(&dev->lock); |
1887 | dev->registered = false; | |
1888 | mutex_unlock(&dev->lock); | |
1889 | ||
1890 | /* | |
1891 | * lirc device should be freed with dev->registered = false, so | |
1892 | * that userspace polling will get notified. | |
1893 | */ | |
a60d64b1 SY |
1894 | if (dev->driver_type != RC_DRIVER_SCANCODE) |
1895 | ir_lirc_unregister(dev); | |
1896 | ||
b05681b9 | 1897 | device_del(&dev->dev); |
d8b4b582 | 1898 | |
fcb13097 DH |
1899 | ida_simple_remove(&rc_ida, dev->minor); |
1900 | ||
ddbf7d5a HK |
1901 | if (!dev->managed_alloc) |
1902 | rc_free_device(dev); | |
bc2a6c57 | 1903 | } |
b05681b9 | 1904 | |
d8b4b582 | 1905 | EXPORT_SYMBOL_GPL(rc_unregister_device); |
bc2a6c57 MCC |
1906 | |
1907 | /* | |
1908 | * Init/exit code for the module. Basically, creates/removes /sys/class/rc | |
1909 | */ | |
1910 | ||
6bda9644 | 1911 | static int __init rc_core_init(void) |
bc2a6c57 | 1912 | { |
40fc5325 | 1913 | int rc = class_register(&rc_class); |
bc2a6c57 | 1914 | if (rc) { |
d3d96820 | 1915 | pr_err("rc_core: unable to register rc class\n"); |
bc2a6c57 MCC |
1916 | return rc; |
1917 | } | |
1918 | ||
a60d64b1 SY |
1919 | rc = lirc_dev_init(); |
1920 | if (rc) { | |
1921 | pr_err("rc_core: unable to init lirc\n"); | |
1922 | class_unregister(&rc_class); | |
1923 | return 0; | |
1924 | } | |
1925 | ||
153a60bb | 1926 | led_trigger_register_simple("rc-feedback", &led_feedback); |
d100e659 | 1927 | rc_map_register(&empty_map); |
bc2a6c57 MCC |
1928 | |
1929 | return 0; | |
1930 | } | |
1931 | ||
6bda9644 | 1932 | static void __exit rc_core_exit(void) |
bc2a6c57 | 1933 | { |
a60d64b1 | 1934 | lirc_dev_exit(); |
40fc5325 | 1935 | class_unregister(&rc_class); |
153a60bb | 1936 | led_trigger_unregister_simple(led_feedback); |
d100e659 | 1937 | rc_map_unregister(&empty_map); |
bc2a6c57 MCC |
1938 | } |
1939 | ||
e76d4ce4 | 1940 | subsys_initcall(rc_core_init); |
6bda9644 | 1941 | module_exit(rc_core_exit); |
bc2a6c57 | 1942 | |
6bda9644 MCC |
1943 | int rc_core_debug; /* ir_debug level (0,1,2) */ |
1944 | EXPORT_SYMBOL_GPL(rc_core_debug); | |
1945 | module_param_named(debug, rc_core_debug, int, 0644); | |
446e4a64 | 1946 | |
37e59f87 | 1947 | MODULE_AUTHOR("Mauro Carvalho Chehab"); |
20835280 | 1948 | MODULE_LICENSE("GPL v2"); |