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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 | |
fcb13097 | 23 | #define RC_DEV_MAX 256 |
f6fc5049 | 24 | |
d57ea877 SY |
25 | static const struct { |
26 | const char *name; | |
27 | unsigned int repeat_period; | |
28 | unsigned int scancode_bits; | |
29 | } protocols[] = { | |
6d741bfe SY |
30 | [RC_PROTO_UNKNOWN] = { .name = "unknown", .repeat_period = 250 }, |
31 | [RC_PROTO_OTHER] = { .name = "other", .repeat_period = 250 }, | |
32 | [RC_PROTO_RC5] = { .name = "rc-5", | |
67f0f15a | 33 | .scancode_bits = 0x1f7f, .repeat_period = 250 }, |
6d741bfe | 34 | [RC_PROTO_RC5X_20] = { .name = "rc-5x-20", |
67f0f15a | 35 | .scancode_bits = 0x1f7f3f, .repeat_period = 250 }, |
6d741bfe | 36 | [RC_PROTO_RC5_SZ] = { .name = "rc-5-sz", |
67f0f15a | 37 | .scancode_bits = 0x2fff, .repeat_period = 250 }, |
6d741bfe | 38 | [RC_PROTO_JVC] = { .name = "jvc", |
d57ea877 | 39 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 40 | [RC_PROTO_SONY12] = { .name = "sony-12", |
67f0f15a | 41 | .scancode_bits = 0x1f007f, .repeat_period = 250 }, |
6d741bfe | 42 | [RC_PROTO_SONY15] = { .name = "sony-15", |
67f0f15a | 43 | .scancode_bits = 0xff007f, .repeat_period = 250 }, |
6d741bfe | 44 | [RC_PROTO_SONY20] = { .name = "sony-20", |
67f0f15a | 45 | .scancode_bits = 0x1fff7f, .repeat_period = 250 }, |
6d741bfe | 46 | [RC_PROTO_NEC] = { .name = "nec", |
67f0f15a | 47 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 48 | [RC_PROTO_NECX] = { .name = "nec-x", |
67f0f15a | 49 | .scancode_bits = 0xffffff, .repeat_period = 250 }, |
6d741bfe | 50 | [RC_PROTO_NEC32] = { .name = "nec-32", |
67f0f15a | 51 | .scancode_bits = 0xffffffff, .repeat_period = 250 }, |
6d741bfe | 52 | [RC_PROTO_SANYO] = { .name = "sanyo", |
d57ea877 | 53 | .scancode_bits = 0x1fffff, .repeat_period = 250 }, |
6d741bfe | 54 | [RC_PROTO_MCIR2_KBD] = { .name = "mcir2-kbd", |
67f0f15a | 55 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 56 | [RC_PROTO_MCIR2_MSE] = { .name = "mcir2-mse", |
67f0f15a | 57 | .scancode_bits = 0x1fffff, .repeat_period = 250 }, |
6d741bfe | 58 | [RC_PROTO_RC6_0] = { .name = "rc-6-0", |
67f0f15a | 59 | .scancode_bits = 0xffff, .repeat_period = 250 }, |
6d741bfe | 60 | [RC_PROTO_RC6_6A_20] = { .name = "rc-6-6a-20", |
67f0f15a | 61 | .scancode_bits = 0xfffff, .repeat_period = 250 }, |
6d741bfe | 62 | [RC_PROTO_RC6_6A_24] = { .name = "rc-6-6a-24", |
67f0f15a | 63 | .scancode_bits = 0xffffff, .repeat_period = 250 }, |
6d741bfe | 64 | [RC_PROTO_RC6_6A_32] = { .name = "rc-6-6a-32", |
67f0f15a | 65 | .scancode_bits = 0xffffffff, .repeat_period = 250 }, |
6d741bfe | 66 | [RC_PROTO_RC6_MCE] = { .name = "rc-6-mce", |
67f0f15a | 67 | .scancode_bits = 0xffff7fff, .repeat_period = 250 }, |
6d741bfe | 68 | [RC_PROTO_SHARP] = { .name = "sharp", |
d57ea877 | 69 | .scancode_bits = 0x1fff, .repeat_period = 250 }, |
6d741bfe SY |
70 | [RC_PROTO_XMP] = { .name = "xmp", .repeat_period = 250 }, |
71 | [RC_PROTO_CEC] = { .name = "cec", .repeat_period = 550 }, | |
d57ea877 | 72 | }; |
a374fef4 | 73 | |
4c7b355d | 74 | /* Used to keep track of known keymaps */ |
631493ec MCC |
75 | static LIST_HEAD(rc_map_list); |
76 | static DEFINE_SPINLOCK(rc_map_lock); | |
153a60bb | 77 | static struct led_trigger *led_feedback; |
631493ec | 78 | |
fcb13097 DH |
79 | /* Used to keep track of rc devices */ |
80 | static DEFINE_IDA(rc_ida); | |
81 | ||
d100e659 | 82 | static struct rc_map_list *seek_rc_map(const char *name) |
631493ec | 83 | { |
d100e659 | 84 | struct rc_map_list *map = NULL; |
631493ec MCC |
85 | |
86 | spin_lock(&rc_map_lock); | |
87 | list_for_each_entry(map, &rc_map_list, list) { | |
88 | if (!strcmp(name, map->map.name)) { | |
89 | spin_unlock(&rc_map_lock); | |
90 | return map; | |
91 | } | |
92 | } | |
93 | spin_unlock(&rc_map_lock); | |
94 | ||
95 | return NULL; | |
96 | } | |
97 | ||
d100e659 | 98 | struct rc_map *rc_map_get(const char *name) |
631493ec MCC |
99 | { |
100 | ||
d100e659 | 101 | struct rc_map_list *map; |
631493ec MCC |
102 | |
103 | map = seek_rc_map(name); | |
2ff56fad | 104 | #ifdef CONFIG_MODULES |
631493ec | 105 | if (!map) { |
8ea5488a | 106 | int rc = request_module("%s", name); |
631493ec | 107 | if (rc < 0) { |
d3d96820 | 108 | pr_err("Couldn't load IR keymap %s\n", name); |
631493ec MCC |
109 | return NULL; |
110 | } | |
111 | msleep(20); /* Give some time for IR to register */ | |
112 | ||
113 | map = seek_rc_map(name); | |
114 | } | |
115 | #endif | |
116 | if (!map) { | |
d3d96820 | 117 | pr_err("IR keymap %s not found\n", name); |
631493ec MCC |
118 | return NULL; |
119 | } | |
120 | ||
121 | printk(KERN_INFO "Registered IR keymap %s\n", map->map.name); | |
122 | ||
123 | return &map->map; | |
124 | } | |
d100e659 | 125 | EXPORT_SYMBOL_GPL(rc_map_get); |
631493ec | 126 | |
d100e659 | 127 | int rc_map_register(struct rc_map_list *map) |
631493ec MCC |
128 | { |
129 | spin_lock(&rc_map_lock); | |
130 | list_add_tail(&map->list, &rc_map_list); | |
131 | spin_unlock(&rc_map_lock); | |
132 | return 0; | |
133 | } | |
d100e659 | 134 | EXPORT_SYMBOL_GPL(rc_map_register); |
631493ec | 135 | |
d100e659 | 136 | void rc_map_unregister(struct rc_map_list *map) |
631493ec MCC |
137 | { |
138 | spin_lock(&rc_map_lock); | |
139 | list_del(&map->list); | |
140 | spin_unlock(&rc_map_lock); | |
141 | } | |
d100e659 | 142 | EXPORT_SYMBOL_GPL(rc_map_unregister); |
631493ec MCC |
143 | |
144 | ||
2f4f58d6 | 145 | static struct rc_map_table empty[] = { |
631493ec MCC |
146 | { 0x2a, KEY_COFFEE }, |
147 | }; | |
148 | ||
d100e659 | 149 | static struct rc_map_list empty_map = { |
631493ec | 150 | .map = { |
6d741bfe SY |
151 | .scan = empty, |
152 | .size = ARRAY_SIZE(empty), | |
153 | .rc_proto = RC_PROTO_UNKNOWN, /* Legacy IR type */ | |
154 | .name = RC_MAP_EMPTY, | |
631493ec MCC |
155 | } |
156 | }; | |
157 | ||
9f470095 DT |
158 | /** |
159 | * ir_create_table() - initializes a scancode table | |
b088ba65 | 160 | * @rc_map: the rc_map to initialize |
9f470095 | 161 | * @name: name to assign to the table |
6d741bfe | 162 | * @rc_proto: ir type to assign to the new table |
9f470095 | 163 | * @size: initial size of the table |
9f470095 | 164 | * |
b088ba65 | 165 | * This routine will initialize the rc_map and will allocate |
d8b4b582 | 166 | * memory to hold at least the specified number of elements. |
f67f366c MCC |
167 | * |
168 | * return: zero on success or a negative error code | |
9f470095 | 169 | */ |
b088ba65 | 170 | static int ir_create_table(struct rc_map *rc_map, |
6d741bfe | 171 | const char *name, u64 rc_proto, size_t size) |
9f470095 | 172 | { |
d54fc3bb HV |
173 | rc_map->name = kstrdup(name, GFP_KERNEL); |
174 | if (!rc_map->name) | |
175 | return -ENOMEM; | |
6d741bfe | 176 | rc_map->rc_proto = rc_proto; |
2f4f58d6 MCC |
177 | rc_map->alloc = roundup_pow_of_two(size * sizeof(struct rc_map_table)); |
178 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); | |
b088ba65 | 179 | rc_map->scan = kmalloc(rc_map->alloc, GFP_KERNEL); |
d54fc3bb HV |
180 | if (!rc_map->scan) { |
181 | kfree(rc_map->name); | |
182 | rc_map->name = NULL; | |
9f470095 | 183 | return -ENOMEM; |
d54fc3bb | 184 | } |
9f470095 DT |
185 | |
186 | IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", | |
b088ba65 | 187 | rc_map->size, rc_map->alloc); |
9f470095 DT |
188 | return 0; |
189 | } | |
190 | ||
191 | /** | |
192 | * ir_free_table() - frees memory allocated by a scancode table | |
b088ba65 | 193 | * @rc_map: the table whose mappings need to be freed |
9f470095 DT |
194 | * |
195 | * This routine will free memory alloctaed for key mappings used by given | |
196 | * scancode table. | |
197 | */ | |
b088ba65 | 198 | static void ir_free_table(struct rc_map *rc_map) |
9f470095 | 199 | { |
b088ba65 | 200 | rc_map->size = 0; |
d54fc3bb | 201 | kfree(rc_map->name); |
c183d358 | 202 | rc_map->name = NULL; |
b088ba65 MCC |
203 | kfree(rc_map->scan); |
204 | rc_map->scan = NULL; | |
9f470095 DT |
205 | } |
206 | ||
7fee03e4 | 207 | /** |
b3074c0a | 208 | * ir_resize_table() - resizes a scancode table if necessary |
b088ba65 | 209 | * @rc_map: the rc_map to resize |
9f470095 | 210 | * @gfp_flags: gfp flags to use when allocating memory |
7fee03e4 | 211 | * |
b088ba65 | 212 | * This routine will shrink the rc_map if it has lots of |
b3074c0a | 213 | * unused entries and grow it if it is full. |
f67f366c MCC |
214 | * |
215 | * return: zero on success or a negative error code | |
7fee03e4 | 216 | */ |
b088ba65 | 217 | static int ir_resize_table(struct rc_map *rc_map, gfp_t gfp_flags) |
7fee03e4 | 218 | { |
b088ba65 | 219 | unsigned int oldalloc = rc_map->alloc; |
b3074c0a | 220 | unsigned int newalloc = oldalloc; |
2f4f58d6 MCC |
221 | struct rc_map_table *oldscan = rc_map->scan; |
222 | struct rc_map_table *newscan; | |
b3074c0a | 223 | |
b088ba65 | 224 | if (rc_map->size == rc_map->len) { |
b3074c0a | 225 | /* All entries in use -> grow keytable */ |
b088ba65 | 226 | if (rc_map->alloc >= IR_TAB_MAX_SIZE) |
b3074c0a | 227 | return -ENOMEM; |
7fee03e4 | 228 | |
b3074c0a DH |
229 | newalloc *= 2; |
230 | IR_dprintk(1, "Growing table to %u bytes\n", newalloc); | |
231 | } | |
7fee03e4 | 232 | |
b088ba65 | 233 | if ((rc_map->len * 3 < rc_map->size) && (oldalloc > IR_TAB_MIN_SIZE)) { |
b3074c0a DH |
234 | /* Less than 1/3 of entries in use -> shrink keytable */ |
235 | newalloc /= 2; | |
236 | IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc); | |
237 | } | |
7fee03e4 | 238 | |
b3074c0a DH |
239 | if (newalloc == oldalloc) |
240 | return 0; | |
7fee03e4 | 241 | |
9f470095 | 242 | newscan = kmalloc(newalloc, gfp_flags); |
b3074c0a DH |
243 | if (!newscan) { |
244 | IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc); | |
245 | return -ENOMEM; | |
246 | } | |
7fee03e4 | 247 | |
2f4f58d6 | 248 | memcpy(newscan, rc_map->scan, rc_map->len * sizeof(struct rc_map_table)); |
b088ba65 MCC |
249 | rc_map->scan = newscan; |
250 | rc_map->alloc = newalloc; | |
2f4f58d6 | 251 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); |
b3074c0a DH |
252 | kfree(oldscan); |
253 | return 0; | |
7fee03e4 MCC |
254 | } |
255 | ||
f6fc5049 | 256 | /** |
9f470095 | 257 | * ir_update_mapping() - set a keycode in the scancode->keycode table |
d8b4b582 | 258 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 259 | * @rc_map: scancode table to be adjusted |
9f470095 | 260 | * @index: index of the mapping that needs to be updated |
f67f366c | 261 | * @new_keycode: the desired keycode |
9f470095 | 262 | * |
d8b4b582 | 263 | * This routine is used to update scancode->keycode mapping at given |
9f470095 | 264 | * position. |
f67f366c MCC |
265 | * |
266 | * return: previous keycode assigned to the mapping | |
267 | * | |
9f470095 | 268 | */ |
d8b4b582 | 269 | static unsigned int ir_update_mapping(struct rc_dev *dev, |
b088ba65 | 270 | struct rc_map *rc_map, |
9f470095 DT |
271 | unsigned int index, |
272 | unsigned int new_keycode) | |
273 | { | |
b088ba65 | 274 | int old_keycode = rc_map->scan[index].keycode; |
9f470095 DT |
275 | int i; |
276 | ||
277 | /* Did the user wish to remove the mapping? */ | |
278 | if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) { | |
279 | IR_dprintk(1, "#%d: Deleting scan 0x%04x\n", | |
b088ba65 MCC |
280 | index, rc_map->scan[index].scancode); |
281 | rc_map->len--; | |
282 | memmove(&rc_map->scan[index], &rc_map->scan[index+ 1], | |
2f4f58d6 | 283 | (rc_map->len - index) * sizeof(struct rc_map_table)); |
9f470095 DT |
284 | } else { |
285 | IR_dprintk(1, "#%d: %s scan 0x%04x with key 0x%04x\n", | |
286 | index, | |
287 | old_keycode == KEY_RESERVED ? "New" : "Replacing", | |
b088ba65 MCC |
288 | rc_map->scan[index].scancode, new_keycode); |
289 | rc_map->scan[index].keycode = new_keycode; | |
d8b4b582 | 290 | __set_bit(new_keycode, dev->input_dev->keybit); |
9f470095 DT |
291 | } |
292 | ||
293 | if (old_keycode != KEY_RESERVED) { | |
294 | /* A previous mapping was updated... */ | |
d8b4b582 | 295 | __clear_bit(old_keycode, dev->input_dev->keybit); |
9f470095 | 296 | /* ... but another scancode might use the same keycode */ |
b088ba65 MCC |
297 | for (i = 0; i < rc_map->len; i++) { |
298 | if (rc_map->scan[i].keycode == old_keycode) { | |
d8b4b582 | 299 | __set_bit(old_keycode, dev->input_dev->keybit); |
9f470095 DT |
300 | break; |
301 | } | |
302 | } | |
303 | ||
304 | /* Possibly shrink the keytable, failure is not a problem */ | |
b088ba65 | 305 | ir_resize_table(rc_map, GFP_ATOMIC); |
9f470095 DT |
306 | } |
307 | ||
308 | return old_keycode; | |
309 | } | |
310 | ||
311 | /** | |
4c7b355d | 312 | * ir_establish_scancode() - set a keycode in the scancode->keycode table |
d8b4b582 | 313 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 314 | * @rc_map: scancode table to be searched |
9f470095 DT |
315 | * @scancode: the desired scancode |
316 | * @resize: controls whether we allowed to resize the table to | |
25985edc | 317 | * accommodate not yet present scancodes |
f6fc5049 | 318 | * |
b088ba65 | 319 | * This routine is used to locate given scancode in rc_map. |
9f470095 DT |
320 | * If scancode is not yet present the routine will allocate a new slot |
321 | * for it. | |
f67f366c MCC |
322 | * |
323 | * return: index of the mapping containing scancode in question | |
324 | * or -1U in case of failure. | |
f6fc5049 | 325 | */ |
d8b4b582 | 326 | static unsigned int ir_establish_scancode(struct rc_dev *dev, |
b088ba65 | 327 | struct rc_map *rc_map, |
9f470095 DT |
328 | unsigned int scancode, |
329 | bool resize) | |
f6fc5049 | 330 | { |
b3074c0a | 331 | unsigned int i; |
9dfe4e83 MCC |
332 | |
333 | /* | |
334 | * Unfortunately, some hardware-based IR decoders don't provide | |
335 | * all bits for the complete IR code. In general, they provide only | |
336 | * the command part of the IR code. Yet, as it is possible to replace | |
337 | * the provided IR with another one, it is needed to allow loading | |
d8b4b582 DH |
338 | * IR tables from other remotes. So, we support specifying a mask to |
339 | * indicate the valid bits of the scancodes. | |
9dfe4e83 | 340 | */ |
9d2f1d3c DH |
341 | if (dev->scancode_mask) |
342 | scancode &= dev->scancode_mask; | |
b3074c0a DH |
343 | |
344 | /* First check if we already have a mapping for this ir command */ | |
b088ba65 MCC |
345 | for (i = 0; i < rc_map->len; i++) { |
346 | if (rc_map->scan[i].scancode == scancode) | |
9f470095 DT |
347 | return i; |
348 | ||
b3074c0a | 349 | /* Keytable is sorted from lowest to highest scancode */ |
b088ba65 | 350 | if (rc_map->scan[i].scancode >= scancode) |
b3074c0a | 351 | break; |
b3074c0a | 352 | } |
f6fc5049 | 353 | |
9f470095 | 354 | /* No previous mapping found, we might need to grow the table */ |
b088ba65 MCC |
355 | if (rc_map->size == rc_map->len) { |
356 | if (!resize || ir_resize_table(rc_map, GFP_ATOMIC)) | |
9f470095 DT |
357 | return -1U; |
358 | } | |
35438946 | 359 | |
9f470095 | 360 | /* i is the proper index to insert our new keycode */ |
b088ba65 MCC |
361 | if (i < rc_map->len) |
362 | memmove(&rc_map->scan[i + 1], &rc_map->scan[i], | |
2f4f58d6 | 363 | (rc_map->len - i) * sizeof(struct rc_map_table)); |
b088ba65 MCC |
364 | rc_map->scan[i].scancode = scancode; |
365 | rc_map->scan[i].keycode = KEY_RESERVED; | |
366 | rc_map->len++; | |
f6fc5049 | 367 | |
9f470095 | 368 | return i; |
f6fc5049 MCC |
369 | } |
370 | ||
ef53a115 | 371 | /** |
b3074c0a | 372 | * ir_setkeycode() - set a keycode in the scancode->keycode table |
d8b4b582 | 373 | * @idev: the struct input_dev device descriptor |
f67f366c MCC |
374 | * @ke: Input keymap entry |
375 | * @old_keycode: result | |
ef53a115 | 376 | * |
b3074c0a | 377 | * This routine is used to handle evdev EVIOCSKEY ioctl. |
f67f366c MCC |
378 | * |
379 | * return: -EINVAL if the keycode could not be inserted, otherwise zero. | |
ef53a115 | 380 | */ |
d8b4b582 | 381 | static int ir_setkeycode(struct input_dev *idev, |
9f470095 DT |
382 | const struct input_keymap_entry *ke, |
383 | unsigned int *old_keycode) | |
ef53a115 | 384 | { |
d8b4b582 | 385 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 386 | struct rc_map *rc_map = &rdev->rc_map; |
9f470095 DT |
387 | unsigned int index; |
388 | unsigned int scancode; | |
dea8a39f | 389 | int retval = 0; |
9f470095 | 390 | unsigned long flags; |
ef53a115 | 391 | |
b088ba65 | 392 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
393 | |
394 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
395 | index = ke->index; | |
b088ba65 | 396 | if (index >= rc_map->len) { |
9f470095 DT |
397 | retval = -EINVAL; |
398 | goto out; | |
399 | } | |
400 | } else { | |
401 | retval = input_scancode_to_scalar(ke, &scancode); | |
402 | if (retval) | |
403 | goto out; | |
404 | ||
b088ba65 MCC |
405 | index = ir_establish_scancode(rdev, rc_map, scancode, true); |
406 | if (index >= rc_map->len) { | |
9f470095 DT |
407 | retval = -ENOMEM; |
408 | goto out; | |
409 | } | |
410 | } | |
411 | ||
b088ba65 | 412 | *old_keycode = ir_update_mapping(rdev, rc_map, index, ke->keycode); |
9f470095 DT |
413 | |
414 | out: | |
b088ba65 | 415 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 416 | return retval; |
e97f4677 MCC |
417 | } |
418 | ||
419 | /** | |
b3074c0a | 420 | * ir_setkeytable() - sets several entries in the scancode->keycode table |
d8b4b582 | 421 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 422 | * @from: the struct rc_map to copy entries from |
e97f4677 | 423 | * |
b3074c0a | 424 | * This routine is used to handle table initialization. |
f67f366c MCC |
425 | * |
426 | * return: -ENOMEM if all keycodes could not be inserted, otherwise zero. | |
e97f4677 | 427 | */ |
d8b4b582 | 428 | static int ir_setkeytable(struct rc_dev *dev, |
b088ba65 | 429 | const struct rc_map *from) |
e97f4677 | 430 | { |
b088ba65 | 431 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
432 | unsigned int i, index; |
433 | int rc; | |
434 | ||
b088ba65 | 435 | rc = ir_create_table(rc_map, from->name, |
6d741bfe | 436 | from->rc_proto, from->size); |
9f470095 DT |
437 | if (rc) |
438 | return rc; | |
439 | ||
b3074c0a | 440 | for (i = 0; i < from->size; i++) { |
b088ba65 | 441 | index = ir_establish_scancode(dev, rc_map, |
9f470095 | 442 | from->scan[i].scancode, false); |
b088ba65 | 443 | if (index >= rc_map->len) { |
9f470095 | 444 | rc = -ENOMEM; |
b3074c0a | 445 | break; |
9f470095 DT |
446 | } |
447 | ||
b088ba65 | 448 | ir_update_mapping(dev, rc_map, index, |
9f470095 | 449 | from->scan[i].keycode); |
e97f4677 | 450 | } |
9f470095 DT |
451 | |
452 | if (rc) | |
b088ba65 | 453 | ir_free_table(rc_map); |
9f470095 | 454 | |
b3074c0a | 455 | return rc; |
ef53a115 MCC |
456 | } |
457 | ||
8ca01d4f TM |
458 | static int rc_map_cmp(const void *key, const void *elt) |
459 | { | |
460 | const unsigned int *scancode = key; | |
461 | const struct rc_map_table *e = elt; | |
462 | ||
463 | if (*scancode < e->scancode) | |
464 | return -1; | |
465 | else if (*scancode > e->scancode) | |
466 | return 1; | |
467 | return 0; | |
468 | } | |
469 | ||
9f470095 DT |
470 | /** |
471 | * ir_lookup_by_scancode() - locate mapping by scancode | |
b088ba65 | 472 | * @rc_map: the struct rc_map to search |
9f470095 | 473 | * @scancode: scancode to look for in the table |
9f470095 DT |
474 | * |
475 | * This routine performs binary search in RC keykeymap table for | |
476 | * given scancode. | |
f67f366c MCC |
477 | * |
478 | * return: index in the table, -1U if not found | |
9f470095 | 479 | */ |
b088ba65 | 480 | static unsigned int ir_lookup_by_scancode(const struct rc_map *rc_map, |
9f470095 DT |
481 | unsigned int scancode) |
482 | { | |
8ca01d4f TM |
483 | struct rc_map_table *res; |
484 | ||
485 | res = bsearch(&scancode, rc_map->scan, rc_map->len, | |
486 | sizeof(struct rc_map_table), rc_map_cmp); | |
487 | if (!res) | |
488 | return -1U; | |
489 | else | |
490 | return res - rc_map->scan; | |
9f470095 DT |
491 | } |
492 | ||
ef53a115 | 493 | /** |
b3074c0a | 494 | * ir_getkeycode() - get a keycode from the scancode->keycode table |
d8b4b582 | 495 | * @idev: the struct input_dev device descriptor |
f67f366c | 496 | * @ke: Input keymap entry |
ef53a115 | 497 | * |
b3074c0a | 498 | * This routine is used to handle evdev EVIOCGKEY ioctl. |
f67f366c MCC |
499 | * |
500 | * return: always returns zero. | |
ef53a115 | 501 | */ |
d8b4b582 | 502 | static int ir_getkeycode(struct input_dev *idev, |
9f470095 | 503 | struct input_keymap_entry *ke) |
ef53a115 | 504 | { |
d8b4b582 | 505 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 506 | struct rc_map *rc_map = &rdev->rc_map; |
2f4f58d6 | 507 | struct rc_map_table *entry; |
9f470095 DT |
508 | unsigned long flags; |
509 | unsigned int index; | |
510 | unsigned int scancode; | |
511 | int retval; | |
ef53a115 | 512 | |
b088ba65 | 513 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
514 | |
515 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
516 | index = ke->index; | |
517 | } else { | |
518 | retval = input_scancode_to_scalar(ke, &scancode); | |
519 | if (retval) | |
520 | goto out; | |
521 | ||
b088ba65 | 522 | index = ir_lookup_by_scancode(rc_map, scancode); |
9f470095 DT |
523 | } |
524 | ||
54e74b87 DT |
525 | if (index < rc_map->len) { |
526 | entry = &rc_map->scan[index]; | |
527 | ||
528 | ke->index = index; | |
529 | ke->keycode = entry->keycode; | |
530 | ke->len = sizeof(entry->scancode); | |
531 | memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode)); | |
532 | ||
533 | } else if (!(ke->flags & INPUT_KEYMAP_BY_INDEX)) { | |
534 | /* | |
535 | * We do not really know the valid range of scancodes | |
536 | * so let's respond with KEY_RESERVED to anything we | |
537 | * do not have mapping for [yet]. | |
538 | */ | |
539 | ke->index = index; | |
540 | ke->keycode = KEY_RESERVED; | |
541 | } else { | |
9f470095 DT |
542 | retval = -EINVAL; |
543 | goto out; | |
e97f4677 MCC |
544 | } |
545 | ||
47c5ba53 DT |
546 | retval = 0; |
547 | ||
9f470095 | 548 | out: |
b088ba65 | 549 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 550 | return retval; |
ef53a115 MCC |
551 | } |
552 | ||
553 | /** | |
ca86674b | 554 | * rc_g_keycode_from_table() - gets the keycode that corresponds to a scancode |
d8b4b582 DH |
555 | * @dev: the struct rc_dev descriptor of the device |
556 | * @scancode: the scancode to look for | |
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. | |
f67f366c MCC |
561 | * |
562 | * return: the corresponding keycode, or KEY_RESERVED | |
ef53a115 | 563 | */ |
ca86674b | 564 | u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode) |
ef53a115 | 565 | { |
b088ba65 | 566 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
567 | unsigned int keycode; |
568 | unsigned int index; | |
569 | unsigned long flags; | |
570 | ||
b088ba65 | 571 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 | 572 | |
b088ba65 MCC |
573 | index = ir_lookup_by_scancode(rc_map, scancode); |
574 | keycode = index < rc_map->len ? | |
575 | rc_map->scan[index].keycode : KEY_RESERVED; | |
9f470095 | 576 | |
b088ba65 | 577 | spin_unlock_irqrestore(&rc_map->lock, flags); |
ef53a115 | 578 | |
35438946 MCC |
579 | if (keycode != KEY_RESERVED) |
580 | IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n", | |
518f4b26 | 581 | dev->device_name, scancode, keycode); |
9f470095 | 582 | |
b3074c0a | 583 | return keycode; |
ef53a115 | 584 | } |
ca86674b | 585 | EXPORT_SYMBOL_GPL(rc_g_keycode_from_table); |
ef53a115 | 586 | |
6660de56 | 587 | /** |
62c65031 | 588 | * ir_do_keyup() - internal function to signal the release of a keypress |
d8b4b582 | 589 | * @dev: the struct rc_dev descriptor of the device |
98c32bcd | 590 | * @sync: whether or not to call input_sync |
6660de56 | 591 | * |
62c65031 DH |
592 | * This function is used internally to release a keypress, it must be |
593 | * called with keylock held. | |
a374fef4 | 594 | */ |
98c32bcd | 595 | static void ir_do_keyup(struct rc_dev *dev, bool sync) |
a374fef4 | 596 | { |
d8b4b582 | 597 | if (!dev->keypressed) |
a374fef4 DH |
598 | return; |
599 | ||
d8b4b582 DH |
600 | IR_dprintk(1, "keyup key 0x%04x\n", dev->last_keycode); |
601 | input_report_key(dev->input_dev, dev->last_keycode, 0); | |
153a60bb | 602 | led_trigger_event(led_feedback, LED_OFF); |
98c32bcd JW |
603 | if (sync) |
604 | input_sync(dev->input_dev); | |
d8b4b582 | 605 | dev->keypressed = false; |
a374fef4 | 606 | } |
62c65031 DH |
607 | |
608 | /** | |
ca86674b | 609 | * rc_keyup() - signals the release of a keypress |
d8b4b582 | 610 | * @dev: the struct rc_dev descriptor of the device |
62c65031 DH |
611 | * |
612 | * This routine is used to signal that a key has been released on the | |
613 | * remote control. | |
614 | */ | |
ca86674b | 615 | void rc_keyup(struct rc_dev *dev) |
62c65031 DH |
616 | { |
617 | unsigned long flags; | |
62c65031 | 618 | |
d8b4b582 | 619 | spin_lock_irqsave(&dev->keylock, flags); |
98c32bcd | 620 | ir_do_keyup(dev, true); |
d8b4b582 | 621 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 622 | } |
ca86674b | 623 | EXPORT_SYMBOL_GPL(rc_keyup); |
a374fef4 DH |
624 | |
625 | /** | |
626 | * ir_timer_keyup() - generates a keyup event after a timeout | |
f67f366c MCC |
627 | * |
628 | * @t: a pointer to the struct timer_list | |
a374fef4 DH |
629 | * |
630 | * This routine will generate a keyup event some time after a keydown event | |
631 | * is generated when no further activity has been detected. | |
6660de56 | 632 | */ |
b17ec78a | 633 | static void ir_timer_keyup(struct timer_list *t) |
6660de56 | 634 | { |
b17ec78a | 635 | struct rc_dev *dev = from_timer(dev, t, timer_keyup); |
a374fef4 DH |
636 | unsigned long flags; |
637 | ||
638 | /* | |
639 | * ir->keyup_jiffies is used to prevent a race condition if a | |
640 | * hardware interrupt occurs at this point and the keyup timer | |
641 | * event is moved further into the future as a result. | |
642 | * | |
643 | * The timer will then be reactivated and this function called | |
644 | * again in the future. We need to exit gracefully in that case | |
645 | * to allow the input subsystem to do its auto-repeat magic or | |
646 | * a keyup event might follow immediately after the keydown. | |
647 | */ | |
d8b4b582 DH |
648 | spin_lock_irqsave(&dev->keylock, flags); |
649 | if (time_is_before_eq_jiffies(dev->keyup_jiffies)) | |
98c32bcd | 650 | ir_do_keyup(dev, true); |
d8b4b582 | 651 | spin_unlock_irqrestore(&dev->keylock, flags); |
a374fef4 DH |
652 | } |
653 | ||
654 | /** | |
ca86674b | 655 | * rc_repeat() - signals that a key is still pressed |
d8b4b582 | 656 | * @dev: the struct rc_dev descriptor of the device |
a374fef4 DH |
657 | * |
658 | * This routine is used by IR decoders when a repeat message which does | |
659 | * not include the necessary bits to reproduce the scancode has been | |
660 | * received. | |
661 | */ | |
ca86674b | 662 | void rc_repeat(struct rc_dev *dev) |
a374fef4 DH |
663 | { |
664 | unsigned long flags; | |
d57ea877 | 665 | unsigned int timeout = protocols[dev->last_protocol].repeat_period; |
6660de56 | 666 | |
d8b4b582 | 667 | spin_lock_irqsave(&dev->keylock, flags); |
a374fef4 | 668 | |
d8b4b582 | 669 | if (!dev->keypressed) |
a374fef4 | 670 | goto out; |
6660de56 | 671 | |
265a2988 DH |
672 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, dev->last_scancode); |
673 | input_sync(dev->input_dev); | |
674 | ||
d57ea877 | 675 | dev->keyup_jiffies = jiffies + msecs_to_jiffies(timeout); |
d8b4b582 | 676 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); |
a374fef4 DH |
677 | |
678 | out: | |
d8b4b582 | 679 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 680 | } |
ca86674b | 681 | EXPORT_SYMBOL_GPL(rc_repeat); |
6660de56 MCC |
682 | |
683 | /** | |
62c65031 | 684 | * ir_do_keydown() - internal function to process a keypress |
d8b4b582 | 685 | * @dev: the struct rc_dev descriptor of the device |
120703f9 | 686 | * @protocol: the protocol of the keypress |
62c65031 DH |
687 | * @scancode: the scancode of the keypress |
688 | * @keycode: the keycode of the keypress | |
689 | * @toggle: the toggle value of the keypress | |
6660de56 | 690 | * |
62c65031 DH |
691 | * This function is used internally to register a keypress, it must be |
692 | * called with keylock held. | |
6660de56 | 693 | */ |
6d741bfe | 694 | static void ir_do_keydown(struct rc_dev *dev, enum rc_proto protocol, |
120703f9 | 695 | u32 scancode, u32 keycode, u8 toggle) |
6660de56 | 696 | { |
99b0f3c9 | 697 | bool new_event = (!dev->keypressed || |
120703f9 | 698 | dev->last_protocol != protocol || |
99b0f3c9 | 699 | dev->last_scancode != scancode || |
120703f9 | 700 | dev->last_toggle != toggle); |
6660de56 | 701 | |
98c32bcd JW |
702 | if (new_event && dev->keypressed) |
703 | ir_do_keyup(dev, false); | |
6660de56 | 704 | |
98c32bcd | 705 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode); |
a374fef4 | 706 | |
98c32bcd JW |
707 | if (new_event && keycode != KEY_RESERVED) { |
708 | /* Register a keypress */ | |
709 | dev->keypressed = true; | |
120703f9 | 710 | dev->last_protocol = protocol; |
98c32bcd JW |
711 | dev->last_scancode = scancode; |
712 | dev->last_toggle = toggle; | |
713 | dev->last_keycode = keycode; | |
714 | ||
25ec587c | 715 | IR_dprintk(1, "%s: key down event, key 0x%04x, protocol 0x%04x, scancode 0x%08x\n", |
518f4b26 | 716 | dev->device_name, keycode, protocol, scancode); |
98c32bcd | 717 | input_report_key(dev->input_dev, keycode, 1); |
70a2f912 JH |
718 | |
719 | led_trigger_event(led_feedback, LED_FULL); | |
98c32bcd | 720 | } |
ed4d3876 | 721 | |
d8b4b582 | 722 | input_sync(dev->input_dev); |
62c65031 | 723 | } |
6660de56 | 724 | |
62c65031 | 725 | /** |
ca86674b | 726 | * rc_keydown() - generates input event for a key press |
d8b4b582 | 727 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
728 | * @protocol: the protocol for the keypress |
729 | * @scancode: the scancode for the keypress | |
62c65031 DH |
730 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
731 | * support toggle values, this should be set to zero) | |
732 | * | |
d8b4b582 DH |
733 | * This routine is used to signal that a key has been pressed on the |
734 | * remote control. | |
62c65031 | 735 | */ |
6d741bfe SY |
736 | void rc_keydown(struct rc_dev *dev, enum rc_proto protocol, u32 scancode, |
737 | u8 toggle) | |
62c65031 DH |
738 | { |
739 | unsigned long flags; | |
ca86674b | 740 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 741 | |
d8b4b582 | 742 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 743 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
62c65031 | 744 | |
d8b4b582 | 745 | if (dev->keypressed) { |
d57ea877 SY |
746 | dev->keyup_jiffies = jiffies + |
747 | msecs_to_jiffies(protocols[protocol].repeat_period); | |
d8b4b582 | 748 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); |
62c65031 | 749 | } |
d8b4b582 | 750 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 751 | } |
ca86674b | 752 | EXPORT_SYMBOL_GPL(rc_keydown); |
6660de56 | 753 | |
62c65031 | 754 | /** |
ca86674b | 755 | * rc_keydown_notimeout() - generates input event for a key press without |
62c65031 | 756 | * an automatic keyup event at a later time |
d8b4b582 | 757 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
758 | * @protocol: the protocol for the keypress |
759 | * @scancode: the scancode for the keypress | |
62c65031 DH |
760 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
761 | * support toggle values, this should be set to zero) | |
762 | * | |
d8b4b582 | 763 | * This routine is used to signal that a key has been pressed on the |
ca86674b | 764 | * remote control. The driver must manually call rc_keyup() at a later stage. |
62c65031 | 765 | */ |
6d741bfe | 766 | void rc_keydown_notimeout(struct rc_dev *dev, enum rc_proto protocol, |
120703f9 | 767 | u32 scancode, u8 toggle) |
62c65031 DH |
768 | { |
769 | unsigned long flags; | |
ca86674b | 770 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 771 | |
d8b4b582 | 772 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 773 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
d8b4b582 | 774 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 775 | } |
ca86674b | 776 | EXPORT_SYMBOL_GPL(rc_keydown_notimeout); |
62c65031 | 777 | |
49a4b36a | 778 | /** |
6b514c4a SY |
779 | * rc_validate_scancode() - checks that a scancode is valid for a protocol. |
780 | * For nec, it should do the opposite of ir_nec_bytes_to_scancode() | |
49a4b36a SY |
781 | * @proto: protocol |
782 | * @scancode: scancode | |
783 | */ | |
784 | bool rc_validate_scancode(enum rc_proto proto, u32 scancode) | |
785 | { | |
786 | switch (proto) { | |
6b514c4a SY |
787 | /* |
788 | * NECX has a 16-bit address; if the lower 8 bits match the upper | |
789 | * 8 bits inverted, then the address would match regular nec. | |
790 | */ | |
49a4b36a SY |
791 | case RC_PROTO_NECX: |
792 | if ((((scancode >> 16) ^ ~(scancode >> 8)) & 0xff) == 0) | |
793 | return false; | |
794 | break; | |
6b514c4a SY |
795 | /* |
796 | * NEC32 has a 16 bit address and 16 bit command. If the lower 8 bits | |
797 | * of the command match the upper 8 bits inverted, then it would | |
798 | * be either NEC or NECX. | |
799 | */ | |
49a4b36a | 800 | case RC_PROTO_NEC32: |
6b514c4a | 801 | if ((((scancode >> 8) ^ ~scancode) & 0xff) == 0) |
49a4b36a SY |
802 | return false; |
803 | break; | |
6b514c4a SY |
804 | /* |
805 | * If the customer code (top 32-bit) is 0x800f, it is MCE else it | |
806 | * is regular mode-6a 32 bit | |
807 | */ | |
49a4b36a SY |
808 | case RC_PROTO_RC6_MCE: |
809 | if ((scancode & 0xffff0000) != 0x800f0000) | |
810 | return false; | |
811 | break; | |
812 | case RC_PROTO_RC6_6A_32: | |
813 | if ((scancode & 0xffff0000) == 0x800f0000) | |
814 | return false; | |
815 | break; | |
816 | default: | |
817 | break; | |
818 | } | |
819 | ||
820 | return true; | |
821 | } | |
822 | ||
b590c0bf SY |
823 | /** |
824 | * rc_validate_filter() - checks that the scancode and mask are valid and | |
825 | * provides sensible defaults | |
f423ccc1 | 826 | * @dev: the struct rc_dev descriptor of the device |
b590c0bf | 827 | * @filter: the scancode and mask |
f67f366c MCC |
828 | * |
829 | * return: 0 or -EINVAL if the filter is not valid | |
b590c0bf | 830 | */ |
f423ccc1 | 831 | static int rc_validate_filter(struct rc_dev *dev, |
b590c0bf SY |
832 | struct rc_scancode_filter *filter) |
833 | { | |
d57ea877 | 834 | u32 mask, s = filter->data; |
6d741bfe | 835 | enum rc_proto protocol = dev->wakeup_protocol; |
b590c0bf | 836 | |
d57ea877 | 837 | if (protocol >= ARRAY_SIZE(protocols)) |
2168b416 SY |
838 | return -EINVAL; |
839 | ||
d57ea877 SY |
840 | mask = protocols[protocol].scancode_bits; |
841 | ||
49a4b36a SY |
842 | if (!rc_validate_scancode(protocol, s)) |
843 | return -EINVAL; | |
b590c0bf | 844 | |
d57ea877 SY |
845 | filter->data &= mask; |
846 | filter->mask &= mask; | |
b590c0bf | 847 | |
f423ccc1 JH |
848 | /* |
849 | * If we have to raw encode the IR for wakeup, we cannot have a mask | |
850 | */ | |
d57ea877 | 851 | if (dev->encode_wakeup && filter->mask != 0 && filter->mask != mask) |
f423ccc1 JH |
852 | return -EINVAL; |
853 | ||
b590c0bf SY |
854 | return 0; |
855 | } | |
856 | ||
8b2ff320 SK |
857 | int rc_open(struct rc_dev *rdev) |
858 | { | |
859 | int rval = 0; | |
860 | ||
861 | if (!rdev) | |
862 | return -EINVAL; | |
863 | ||
864 | mutex_lock(&rdev->lock); | |
c73bbaa4 | 865 | |
f02dcdd1 | 866 | if (!rdev->users++ && rdev->open != NULL) |
8b2ff320 SK |
867 | rval = rdev->open(rdev); |
868 | ||
869 | if (rval) | |
870 | rdev->users--; | |
871 | ||
872 | mutex_unlock(&rdev->lock); | |
873 | ||
874 | return rval; | |
875 | } | |
8b2ff320 | 876 | |
d8b4b582 | 877 | static int ir_open(struct input_dev *idev) |
ef53a115 | 878 | { |
d8b4b582 | 879 | struct rc_dev *rdev = input_get_drvdata(idev); |
75543cce | 880 | |
8b2ff320 SK |
881 | return rc_open(rdev); |
882 | } | |
883 | ||
884 | void rc_close(struct rc_dev *rdev) | |
885 | { | |
886 | if (rdev) { | |
887 | mutex_lock(&rdev->lock); | |
888 | ||
81b7d14e | 889 | if (!--rdev->users && rdev->close != NULL) |
8b2ff320 SK |
890 | rdev->close(rdev); |
891 | ||
892 | mutex_unlock(&rdev->lock); | |
893 | } | |
ef53a115 | 894 | } |
d4b778d3 | 895 | |
d8b4b582 | 896 | static void ir_close(struct input_dev *idev) |
f6fc5049 | 897 | { |
d8b4b582 | 898 | struct rc_dev *rdev = input_get_drvdata(idev); |
8b2ff320 | 899 | rc_close(rdev); |
f6fc5049 | 900 | } |
f6fc5049 | 901 | |
bc2a6c57 | 902 | /* class for /sys/class/rc */ |
40fc5325 | 903 | static char *rc_devnode(struct device *dev, umode_t *mode) |
bc2a6c57 MCC |
904 | { |
905 | return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); | |
906 | } | |
907 | ||
40fc5325 | 908 | static struct class rc_class = { |
bc2a6c57 | 909 | .name = "rc", |
40fc5325 | 910 | .devnode = rc_devnode, |
bc2a6c57 MCC |
911 | }; |
912 | ||
c003ab1b DH |
913 | /* |
914 | * These are the protocol textual descriptions that are | |
915 | * used by the sysfs protocols file. Note that the order | |
916 | * of the entries is relevant. | |
917 | */ | |
53df8777 | 918 | static const struct { |
bc2a6c57 | 919 | u64 type; |
53df8777 | 920 | const char *name; |
9f0bf366 | 921 | const char *module_name; |
bc2a6c57 | 922 | } proto_names[] = { |
6d741bfe SY |
923 | { RC_PROTO_BIT_NONE, "none", NULL }, |
924 | { RC_PROTO_BIT_OTHER, "other", NULL }, | |
925 | { RC_PROTO_BIT_UNKNOWN, "unknown", NULL }, | |
926 | { RC_PROTO_BIT_RC5 | | |
927 | RC_PROTO_BIT_RC5X_20, "rc-5", "ir-rc5-decoder" }, | |
928 | { RC_PROTO_BIT_NEC | | |
929 | RC_PROTO_BIT_NECX | | |
930 | RC_PROTO_BIT_NEC32, "nec", "ir-nec-decoder" }, | |
931 | { RC_PROTO_BIT_RC6_0 | | |
932 | RC_PROTO_BIT_RC6_6A_20 | | |
933 | RC_PROTO_BIT_RC6_6A_24 | | |
934 | RC_PROTO_BIT_RC6_6A_32 | | |
935 | RC_PROTO_BIT_RC6_MCE, "rc-6", "ir-rc6-decoder" }, | |
936 | { RC_PROTO_BIT_JVC, "jvc", "ir-jvc-decoder" }, | |
937 | { RC_PROTO_BIT_SONY12 | | |
938 | RC_PROTO_BIT_SONY15 | | |
939 | RC_PROTO_BIT_SONY20, "sony", "ir-sony-decoder" }, | |
940 | { RC_PROTO_BIT_RC5_SZ, "rc-5-sz", "ir-rc5-decoder" }, | |
941 | { RC_PROTO_BIT_SANYO, "sanyo", "ir-sanyo-decoder" }, | |
942 | { RC_PROTO_BIT_SHARP, "sharp", "ir-sharp-decoder" }, | |
943 | { RC_PROTO_BIT_MCIR2_KBD | | |
944 | RC_PROTO_BIT_MCIR2_MSE, "mce_kbd", "ir-mce_kbd-decoder" }, | |
945 | { RC_PROTO_BIT_XMP, "xmp", "ir-xmp-decoder" }, | |
946 | { RC_PROTO_BIT_CEC, "cec", NULL }, | |
bc2a6c57 MCC |
947 | }; |
948 | ||
bc2a6c57 | 949 | /** |
ab88c66d JH |
950 | * struct rc_filter_attribute - Device attribute relating to a filter type. |
951 | * @attr: Device attribute. | |
952 | * @type: Filter type. | |
953 | * @mask: false for filter value, true for filter mask. | |
954 | */ | |
955 | struct rc_filter_attribute { | |
956 | struct device_attribute attr; | |
957 | enum rc_filter_type type; | |
958 | bool mask; | |
959 | }; | |
960 | #define to_rc_filter_attr(a) container_of(a, struct rc_filter_attribute, attr) | |
961 | ||
ab88c66d JH |
962 | #define RC_FILTER_ATTR(_name, _mode, _show, _store, _type, _mask) \ |
963 | struct rc_filter_attribute dev_attr_##_name = { \ | |
964 | .attr = __ATTR(_name, _mode, _show, _store), \ | |
965 | .type = (_type), \ | |
966 | .mask = (_mask), \ | |
967 | } | |
968 | ||
969 | /** | |
0751d33c | 970 | * show_protocols() - shows the current IR protocol(s) |
d8b4b582 | 971 | * @device: the device descriptor |
da6e162d | 972 | * @mattr: the device attribute struct |
bc2a6c57 MCC |
973 | * @buf: a pointer to the output buffer |
974 | * | |
975 | * This routine is a callback routine for input read the IR protocol type(s). | |
0751d33c | 976 | * it is trigged by reading /sys/class/rc/rc?/protocols. |
bc2a6c57 MCC |
977 | * It returns the protocol names of supported protocols. |
978 | * Enabled protocols are printed in brackets. | |
08aeb7c9 | 979 | * |
18726a34 DH |
980 | * dev->lock is taken to guard against races between |
981 | * store_protocols and show_protocols. | |
bc2a6c57 | 982 | */ |
d8b4b582 | 983 | static ssize_t show_protocols(struct device *device, |
bc2a6c57 MCC |
984 | struct device_attribute *mattr, char *buf) |
985 | { | |
d8b4b582 | 986 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 MCC |
987 | u64 allowed, enabled; |
988 | char *tmp = buf; | |
989 | int i; | |
990 | ||
08aeb7c9 JW |
991 | mutex_lock(&dev->lock); |
992 | ||
0751d33c SY |
993 | enabled = dev->enabled_protocols; |
994 | allowed = dev->allowed_protocols; | |
995 | if (dev->raw && !allowed) | |
996 | allowed = ir_raw_get_allowed_protocols(); | |
bc2a6c57 | 997 | |
da6e162d DH |
998 | mutex_unlock(&dev->lock); |
999 | ||
1000 | IR_dprintk(1, "%s: allowed - 0x%llx, enabled - 0x%llx\n", | |
1001 | __func__, (long long)allowed, (long long)enabled); | |
bc2a6c57 MCC |
1002 | |
1003 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
1004 | if (allowed & enabled & proto_names[i].type) | |
1005 | tmp += sprintf(tmp, "[%s] ", proto_names[i].name); | |
1006 | else if (allowed & proto_names[i].type) | |
1007 | tmp += sprintf(tmp, "%s ", proto_names[i].name); | |
c003ab1b DH |
1008 | |
1009 | if (allowed & proto_names[i].type) | |
1010 | allowed &= ~proto_names[i].type; | |
bc2a6c57 MCC |
1011 | } |
1012 | ||
a60d64b1 SY |
1013 | #ifdef CONFIG_LIRC |
1014 | if (dev->driver_type == RC_DRIVER_IR_RAW) | |
275ddb40 | 1015 | tmp += sprintf(tmp, "[lirc] "); |
a60d64b1 | 1016 | #endif |
275ddb40 | 1017 | |
bc2a6c57 MCC |
1018 | if (tmp != buf) |
1019 | tmp--; | |
1020 | *tmp = '\n'; | |
08aeb7c9 | 1021 | |
bc2a6c57 MCC |
1022 | return tmp + 1 - buf; |
1023 | } | |
1024 | ||
1025 | /** | |
da6e162d DH |
1026 | * parse_protocol_change() - parses a protocol change request |
1027 | * @protocols: pointer to the bitmask of current protocols | |
1028 | * @buf: pointer to the buffer with a list of changes | |
bc2a6c57 | 1029 | * |
da6e162d DH |
1030 | * Writing "+proto" will add a protocol to the protocol mask. |
1031 | * Writing "-proto" will remove a protocol from protocol mask. | |
bc2a6c57 MCC |
1032 | * Writing "proto" will enable only "proto". |
1033 | * Writing "none" will disable all protocols. | |
da6e162d | 1034 | * Returns the number of changes performed or a negative error code. |
bc2a6c57 | 1035 | */ |
da6e162d | 1036 | static int parse_protocol_change(u64 *protocols, const char *buf) |
bc2a6c57 | 1037 | { |
bc2a6c57 | 1038 | const char *tmp; |
da6e162d DH |
1039 | unsigned count = 0; |
1040 | bool enable, disable; | |
bc2a6c57 | 1041 | u64 mask; |
da6e162d | 1042 | int i; |
bc2a6c57 | 1043 | |
da6e162d | 1044 | while ((tmp = strsep((char **)&buf, " \n")) != NULL) { |
bc2a6c57 MCC |
1045 | if (!*tmp) |
1046 | break; | |
1047 | ||
1048 | if (*tmp == '+') { | |
1049 | enable = true; | |
1050 | disable = false; | |
1051 | tmp++; | |
1052 | } else if (*tmp == '-') { | |
1053 | enable = false; | |
1054 | disable = true; | |
1055 | tmp++; | |
1056 | } else { | |
1057 | enable = false; | |
1058 | disable = false; | |
1059 | } | |
1060 | ||
c003ab1b DH |
1061 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { |
1062 | if (!strcasecmp(tmp, proto_names[i].name)) { | |
1063 | mask = proto_names[i].type; | |
1064 | break; | |
bc2a6c57 | 1065 | } |
bc2a6c57 MCC |
1066 | } |
1067 | ||
c003ab1b | 1068 | if (i == ARRAY_SIZE(proto_names)) { |
275ddb40 DH |
1069 | if (!strcasecmp(tmp, "lirc")) |
1070 | mask = 0; | |
1071 | else { | |
1072 | IR_dprintk(1, "Unknown protocol: '%s'\n", tmp); | |
1073 | return -EINVAL; | |
1074 | } | |
c003ab1b DH |
1075 | } |
1076 | ||
1077 | count++; | |
1078 | ||
bc2a6c57 | 1079 | if (enable) |
da6e162d | 1080 | *protocols |= mask; |
bc2a6c57 | 1081 | else if (disable) |
da6e162d | 1082 | *protocols &= ~mask; |
bc2a6c57 | 1083 | else |
da6e162d | 1084 | *protocols = mask; |
bc2a6c57 MCC |
1085 | } |
1086 | ||
1087 | if (!count) { | |
1088 | IR_dprintk(1, "Protocol not specified\n"); | |
da6e162d DH |
1089 | return -EINVAL; |
1090 | } | |
1091 | ||
1092 | return count; | |
1093 | } | |
1094 | ||
0d39ab0b | 1095 | void ir_raw_load_modules(u64 *protocols) |
9f0bf366 HK |
1096 | { |
1097 | u64 available; | |
1098 | int i, ret; | |
1099 | ||
1100 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
6d741bfe SY |
1101 | if (proto_names[i].type == RC_PROTO_BIT_NONE || |
1102 | proto_names[i].type & (RC_PROTO_BIT_OTHER | | |
1103 | RC_PROTO_BIT_UNKNOWN)) | |
9f0bf366 HK |
1104 | continue; |
1105 | ||
1106 | available = ir_raw_get_allowed_protocols(); | |
1107 | if (!(*protocols & proto_names[i].type & ~available)) | |
1108 | continue; | |
1109 | ||
1110 | if (!proto_names[i].module_name) { | |
1111 | pr_err("Can't enable IR protocol %s\n", | |
1112 | proto_names[i].name); | |
1113 | *protocols &= ~proto_names[i].type; | |
1114 | continue; | |
1115 | } | |
1116 | ||
1117 | ret = request_module("%s", proto_names[i].module_name); | |
1118 | if (ret < 0) { | |
1119 | pr_err("Couldn't load IR protocol module %s\n", | |
1120 | proto_names[i].module_name); | |
1121 | *protocols &= ~proto_names[i].type; | |
1122 | continue; | |
1123 | } | |
1124 | msleep(20); | |
1125 | available = ir_raw_get_allowed_protocols(); | |
1126 | if (!(*protocols & proto_names[i].type & ~available)) | |
1127 | continue; | |
1128 | ||
8caebcdc | 1129 | pr_err("Loaded IR protocol module %s, but protocol %s still not available\n", |
9f0bf366 HK |
1130 | proto_names[i].module_name, |
1131 | proto_names[i].name); | |
1132 | *protocols &= ~proto_names[i].type; | |
1133 | } | |
1134 | } | |
1135 | ||
da6e162d DH |
1136 | /** |
1137 | * store_protocols() - changes the current/wakeup IR protocol(s) | |
1138 | * @device: the device descriptor | |
1139 | * @mattr: the device attribute struct | |
1140 | * @buf: a pointer to the input buffer | |
1141 | * @len: length of the input buffer | |
1142 | * | |
1143 | * This routine is for changing the IR protocol type. | |
1144 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]protocols. | |
1145 | * See parse_protocol_change() for the valid commands. | |
1146 | * Returns @len on success or a negative error code. | |
1147 | * | |
18726a34 DH |
1148 | * dev->lock is taken to guard against races between |
1149 | * store_protocols and show_protocols. | |
da6e162d DH |
1150 | */ |
1151 | static ssize_t store_protocols(struct device *device, | |
1152 | struct device_attribute *mattr, | |
1153 | const char *buf, size_t len) | |
1154 | { | |
1155 | struct rc_dev *dev = to_rc_dev(device); | |
da6e162d | 1156 | u64 *current_protocols; |
da6e162d | 1157 | struct rc_scancode_filter *filter; |
da6e162d DH |
1158 | u64 old_protocols, new_protocols; |
1159 | ssize_t rc; | |
1160 | ||
0751d33c SY |
1161 | IR_dprintk(1, "Normal protocol change requested\n"); |
1162 | current_protocols = &dev->enabled_protocols; | |
1163 | filter = &dev->scancode_filter; | |
da6e162d | 1164 | |
0751d33c | 1165 | if (!dev->change_protocol) { |
da6e162d DH |
1166 | IR_dprintk(1, "Protocol switching not supported\n"); |
1167 | return -EINVAL; | |
1168 | } | |
1169 | ||
1170 | mutex_lock(&dev->lock); | |
1171 | ||
1172 | old_protocols = *current_protocols; | |
1173 | new_protocols = old_protocols; | |
1174 | rc = parse_protocol_change(&new_protocols, buf); | |
1175 | if (rc < 0) | |
1176 | goto out; | |
1177 | ||
0751d33c | 1178 | rc = dev->change_protocol(dev, &new_protocols); |
da6e162d DH |
1179 | if (rc < 0) { |
1180 | IR_dprintk(1, "Error setting protocols to 0x%llx\n", | |
1181 | (long long)new_protocols); | |
08aeb7c9 | 1182 | goto out; |
bc2a6c57 MCC |
1183 | } |
1184 | ||
9f0bf366 HK |
1185 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1186 | ir_raw_load_modules(&new_protocols); | |
1187 | ||
983c5bd2 JH |
1188 | if (new_protocols != old_protocols) { |
1189 | *current_protocols = new_protocols; | |
1190 | IR_dprintk(1, "Protocols changed to 0x%llx\n", | |
1191 | (long long)new_protocols); | |
bc2a6c57 MCC |
1192 | } |
1193 | ||
6bea25af | 1194 | /* |
983c5bd2 JH |
1195 | * If a protocol change was attempted the filter may need updating, even |
1196 | * if the actual protocol mask hasn't changed (since the driver may have | |
1197 | * cleared the filter). | |
6bea25af JH |
1198 | * Try setting the same filter with the new protocol (if any). |
1199 | * Fall back to clearing the filter. | |
1200 | */ | |
0751d33c | 1201 | if (dev->s_filter && filter->mask) { |
da6e162d | 1202 | if (new_protocols) |
0751d33c | 1203 | rc = dev->s_filter(dev, filter); |
da6e162d DH |
1204 | else |
1205 | rc = -1; | |
6bea25af | 1206 | |
da6e162d DH |
1207 | if (rc < 0) { |
1208 | filter->data = 0; | |
1209 | filter->mask = 0; | |
0751d33c | 1210 | dev->s_filter(dev, filter); |
da6e162d | 1211 | } |
6bea25af JH |
1212 | } |
1213 | ||
da6e162d | 1214 | rc = len; |
08aeb7c9 JW |
1215 | |
1216 | out: | |
1217 | mutex_unlock(&dev->lock); | |
da6e162d | 1218 | return rc; |
bc2a6c57 MCC |
1219 | } |
1220 | ||
00942d1a JH |
1221 | /** |
1222 | * show_filter() - shows the current scancode filter value or mask | |
1223 | * @device: the device descriptor | |
1224 | * @attr: the device attribute struct | |
1225 | * @buf: a pointer to the output buffer | |
1226 | * | |
1227 | * This routine is a callback routine to read a scancode filter value or mask. | |
1228 | * It is trigged by reading /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1229 | * It prints the current scancode filter value or mask of the appropriate filter | |
1230 | * type in hexadecimal into @buf and returns the size of the buffer. | |
1231 | * | |
1232 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1233 | * compared against input scancodes and non-matching scancodes are discarded. | |
1234 | * | |
18726a34 | 1235 | * dev->lock is taken to guard against races between |
00942d1a JH |
1236 | * store_filter and show_filter. |
1237 | */ | |
1238 | static ssize_t show_filter(struct device *device, | |
1239 | struct device_attribute *attr, | |
1240 | char *buf) | |
1241 | { | |
1242 | struct rc_dev *dev = to_rc_dev(device); | |
1243 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1244 | struct rc_scancode_filter *filter; |
00942d1a JH |
1245 | u32 val; |
1246 | ||
c73bbaa4 | 1247 | mutex_lock(&dev->lock); |
c73bbaa4 | 1248 | |
da6e162d | 1249 | if (fattr->type == RC_FILTER_NORMAL) |
c5540fbb | 1250 | filter = &dev->scancode_filter; |
da6e162d | 1251 | else |
c5540fbb | 1252 | filter = &dev->scancode_wakeup_filter; |
da6e162d | 1253 | |
da6e162d DH |
1254 | if (fattr->mask) |
1255 | val = filter->mask; | |
00942d1a | 1256 | else |
da6e162d | 1257 | val = filter->data; |
00942d1a JH |
1258 | mutex_unlock(&dev->lock); |
1259 | ||
1260 | return sprintf(buf, "%#x\n", val); | |
1261 | } | |
1262 | ||
1263 | /** | |
1264 | * store_filter() - changes the scancode filter value | |
1265 | * @device: the device descriptor | |
1266 | * @attr: the device attribute struct | |
1267 | * @buf: a pointer to the input buffer | |
1268 | * @len: length of the input buffer | |
1269 | * | |
1270 | * This routine is for changing a scancode filter value or mask. | |
1271 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1272 | * Returns -EINVAL if an invalid filter value for the current protocol was | |
1273 | * specified or if scancode filtering is not supported by the driver, otherwise | |
1274 | * returns @len. | |
1275 | * | |
1276 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1277 | * compared against input scancodes and non-matching scancodes are discarded. | |
1278 | * | |
18726a34 | 1279 | * dev->lock is taken to guard against races between |
00942d1a JH |
1280 | * store_filter and show_filter. |
1281 | */ | |
1282 | static ssize_t store_filter(struct device *device, | |
1283 | struct device_attribute *attr, | |
da6e162d | 1284 | const char *buf, size_t len) |
00942d1a JH |
1285 | { |
1286 | struct rc_dev *dev = to_rc_dev(device); | |
1287 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1288 | struct rc_scancode_filter new_filter, *filter; |
00942d1a JH |
1289 | int ret; |
1290 | unsigned long val; | |
23c843b5 | 1291 | int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter); |
00942d1a | 1292 | |
00942d1a JH |
1293 | ret = kstrtoul(buf, 0, &val); |
1294 | if (ret < 0) | |
1295 | return ret; | |
1296 | ||
da6e162d DH |
1297 | if (fattr->type == RC_FILTER_NORMAL) { |
1298 | set_filter = dev->s_filter; | |
c5540fbb | 1299 | filter = &dev->scancode_filter; |
da6e162d DH |
1300 | } else { |
1301 | set_filter = dev->s_wakeup_filter; | |
c5540fbb | 1302 | filter = &dev->scancode_wakeup_filter; |
da6e162d DH |
1303 | } |
1304 | ||
99b0f3c9 DH |
1305 | if (!set_filter) |
1306 | return -EINVAL; | |
00942d1a JH |
1307 | |
1308 | mutex_lock(&dev->lock); | |
1309 | ||
da6e162d | 1310 | new_filter = *filter; |
00942d1a | 1311 | if (fattr->mask) |
da6e162d | 1312 | new_filter.mask = val; |
00942d1a | 1313 | else |
da6e162d | 1314 | new_filter.data = val; |
23c843b5 | 1315 | |
0751d33c | 1316 | if (fattr->type == RC_FILTER_WAKEUP) { |
b590c0bf SY |
1317 | /* |
1318 | * Refuse to set a filter unless a protocol is enabled | |
1319 | * and the filter is valid for that protocol | |
1320 | */ | |
6d741bfe | 1321 | if (dev->wakeup_protocol != RC_PROTO_UNKNOWN) |
f423ccc1 | 1322 | ret = rc_validate_filter(dev, &new_filter); |
b590c0bf | 1323 | else |
0751d33c | 1324 | ret = -EINVAL; |
b590c0bf SY |
1325 | |
1326 | if (ret != 0) | |
0751d33c | 1327 | goto unlock; |
0751d33c SY |
1328 | } |
1329 | ||
1330 | if (fattr->type == RC_FILTER_NORMAL && !dev->enabled_protocols && | |
1331 | val) { | |
6bea25af JH |
1332 | /* refuse to set a filter unless a protocol is enabled */ |
1333 | ret = -EINVAL; | |
1334 | goto unlock; | |
1335 | } | |
23c843b5 | 1336 | |
da6e162d | 1337 | ret = set_filter(dev, &new_filter); |
99b0f3c9 DH |
1338 | if (ret < 0) |
1339 | goto unlock; | |
00942d1a | 1340 | |
da6e162d | 1341 | *filter = new_filter; |
00942d1a JH |
1342 | |
1343 | unlock: | |
1344 | mutex_unlock(&dev->lock); | |
da6e162d | 1345 | return (ret < 0) ? ret : len; |
00942d1a JH |
1346 | } |
1347 | ||
0751d33c SY |
1348 | /** |
1349 | * show_wakeup_protocols() - shows the wakeup IR protocol | |
1350 | * @device: the device descriptor | |
1351 | * @mattr: the device attribute struct | |
1352 | * @buf: a pointer to the output buffer | |
1353 | * | |
1354 | * This routine is a callback routine for input read the IR protocol type(s). | |
1355 | * it is trigged by reading /sys/class/rc/rc?/wakeup_protocols. | |
1356 | * It returns the protocol names of supported protocols. | |
1357 | * The enabled protocols are printed in brackets. | |
1358 | * | |
18726a34 DH |
1359 | * dev->lock is taken to guard against races between |
1360 | * store_wakeup_protocols and show_wakeup_protocols. | |
0751d33c SY |
1361 | */ |
1362 | static ssize_t show_wakeup_protocols(struct device *device, | |
1363 | struct device_attribute *mattr, | |
1364 | char *buf) | |
1365 | { | |
1366 | struct rc_dev *dev = to_rc_dev(device); | |
1367 | u64 allowed; | |
6d741bfe | 1368 | enum rc_proto enabled; |
0751d33c SY |
1369 | char *tmp = buf; |
1370 | int i; | |
1371 | ||
0751d33c SY |
1372 | mutex_lock(&dev->lock); |
1373 | ||
1374 | allowed = dev->allowed_wakeup_protocols; | |
1375 | enabled = dev->wakeup_protocol; | |
1376 | ||
1377 | mutex_unlock(&dev->lock); | |
1378 | ||
1379 | IR_dprintk(1, "%s: allowed - 0x%llx, enabled - %d\n", | |
1380 | __func__, (long long)allowed, enabled); | |
1381 | ||
d57ea877 | 1382 | for (i = 0; i < ARRAY_SIZE(protocols); i++) { |
0751d33c SY |
1383 | if (allowed & (1ULL << i)) { |
1384 | if (i == enabled) | |
d57ea877 | 1385 | tmp += sprintf(tmp, "[%s] ", protocols[i].name); |
0751d33c | 1386 | else |
d57ea877 | 1387 | tmp += sprintf(tmp, "%s ", protocols[i].name); |
0751d33c SY |
1388 | } |
1389 | } | |
1390 | ||
1391 | if (tmp != buf) | |
1392 | tmp--; | |
1393 | *tmp = '\n'; | |
1394 | ||
1395 | return tmp + 1 - buf; | |
1396 | } | |
1397 | ||
1398 | /** | |
1399 | * store_wakeup_protocols() - changes the wakeup IR protocol(s) | |
1400 | * @device: the device descriptor | |
1401 | * @mattr: the device attribute struct | |
1402 | * @buf: a pointer to the input buffer | |
1403 | * @len: length of the input buffer | |
1404 | * | |
1405 | * This routine is for changing the IR protocol type. | |
1406 | * It is trigged by writing to /sys/class/rc/rc?/wakeup_protocols. | |
1407 | * Returns @len on success or a negative error code. | |
1408 | * | |
18726a34 DH |
1409 | * dev->lock is taken to guard against races between |
1410 | * store_wakeup_protocols and show_wakeup_protocols. | |
0751d33c SY |
1411 | */ |
1412 | static ssize_t store_wakeup_protocols(struct device *device, | |
1413 | struct device_attribute *mattr, | |
1414 | const char *buf, size_t len) | |
1415 | { | |
1416 | struct rc_dev *dev = to_rc_dev(device); | |
6d741bfe | 1417 | enum rc_proto protocol; |
0751d33c SY |
1418 | ssize_t rc; |
1419 | u64 allowed; | |
1420 | int i; | |
1421 | ||
0751d33c SY |
1422 | mutex_lock(&dev->lock); |
1423 | ||
1424 | allowed = dev->allowed_wakeup_protocols; | |
1425 | ||
1426 | if (sysfs_streq(buf, "none")) { | |
6d741bfe | 1427 | protocol = RC_PROTO_UNKNOWN; |
0751d33c | 1428 | } else { |
d57ea877 | 1429 | for (i = 0; i < ARRAY_SIZE(protocols); i++) { |
0751d33c | 1430 | if ((allowed & (1ULL << i)) && |
d57ea877 | 1431 | sysfs_streq(buf, protocols[i].name)) { |
0751d33c SY |
1432 | protocol = i; |
1433 | break; | |
1434 | } | |
1435 | } | |
1436 | ||
d57ea877 | 1437 | if (i == ARRAY_SIZE(protocols)) { |
0751d33c SY |
1438 | rc = -EINVAL; |
1439 | goto out; | |
1440 | } | |
f423ccc1 JH |
1441 | |
1442 | if (dev->encode_wakeup) { | |
1443 | u64 mask = 1ULL << protocol; | |
1444 | ||
1445 | ir_raw_load_modules(&mask); | |
1446 | if (!mask) { | |
1447 | rc = -EINVAL; | |
1448 | goto out; | |
1449 | } | |
1450 | } | |
0751d33c SY |
1451 | } |
1452 | ||
1453 | if (dev->wakeup_protocol != protocol) { | |
1454 | dev->wakeup_protocol = protocol; | |
1455 | IR_dprintk(1, "Wakeup protocol changed to %d\n", protocol); | |
1456 | ||
6d741bfe | 1457 | if (protocol == RC_PROTO_RC6_MCE) |
0751d33c SY |
1458 | dev->scancode_wakeup_filter.data = 0x800f0000; |
1459 | else | |
1460 | dev->scancode_wakeup_filter.data = 0; | |
1461 | dev->scancode_wakeup_filter.mask = 0; | |
1462 | ||
1463 | rc = dev->s_wakeup_filter(dev, &dev->scancode_wakeup_filter); | |
1464 | if (rc == 0) | |
1465 | rc = len; | |
1466 | } else { | |
1467 | rc = len; | |
1468 | } | |
1469 | ||
1470 | out: | |
1471 | mutex_unlock(&dev->lock); | |
1472 | return rc; | |
1473 | } | |
1474 | ||
d8b4b582 DH |
1475 | static void rc_dev_release(struct device *device) |
1476 | { | |
47cae1e1 MK |
1477 | struct rc_dev *dev = to_rc_dev(device); |
1478 | ||
1479 | kfree(dev); | |
d8b4b582 DH |
1480 | } |
1481 | ||
bc2a6c57 MCC |
1482 | #define ADD_HOTPLUG_VAR(fmt, val...) \ |
1483 | do { \ | |
1484 | int err = add_uevent_var(env, fmt, val); \ | |
1485 | if (err) \ | |
1486 | return err; \ | |
1487 | } while (0) | |
1488 | ||
1489 | static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env) | |
1490 | { | |
d8b4b582 | 1491 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 | 1492 | |
b088ba65 MCC |
1493 | if (dev->rc_map.name) |
1494 | ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name); | |
d8b4b582 DH |
1495 | if (dev->driver_name) |
1496 | ADD_HOTPLUG_VAR("DRV_NAME=%s", dev->driver_name); | |
b9f407e3 SY |
1497 | if (dev->device_name) |
1498 | ADD_HOTPLUG_VAR("DEV_NAME=%s", dev->device_name); | |
bc2a6c57 MCC |
1499 | |
1500 | return 0; | |
1501 | } | |
1502 | ||
1503 | /* | |
1504 | * Static device attribute struct with the sysfs attributes for IR's | |
1505 | */ | |
6d75db30 SY |
1506 | static struct device_attribute dev_attr_ro_protocols = |
1507 | __ATTR(protocols, 0444, show_protocols, NULL); | |
1508 | static struct device_attribute dev_attr_rw_protocols = | |
1509 | __ATTR(protocols, 0644, show_protocols, store_protocols); | |
0751d33c SY |
1510 | static DEVICE_ATTR(wakeup_protocols, 0644, show_wakeup_protocols, |
1511 | store_wakeup_protocols); | |
00942d1a JH |
1512 | static RC_FILTER_ATTR(filter, S_IRUGO|S_IWUSR, |
1513 | show_filter, store_filter, RC_FILTER_NORMAL, false); | |
1514 | static RC_FILTER_ATTR(filter_mask, S_IRUGO|S_IWUSR, | |
1515 | show_filter, store_filter, RC_FILTER_NORMAL, true); | |
1516 | static RC_FILTER_ATTR(wakeup_filter, S_IRUGO|S_IWUSR, | |
1517 | show_filter, store_filter, RC_FILTER_WAKEUP, false); | |
1518 | static RC_FILTER_ATTR(wakeup_filter_mask, S_IRUGO|S_IWUSR, | |
1519 | show_filter, store_filter, RC_FILTER_WAKEUP, true); | |
bc2a6c57 | 1520 | |
6d75db30 SY |
1521 | static struct attribute *rc_dev_rw_protocol_attrs[] = { |
1522 | &dev_attr_rw_protocols.attr, | |
99b0f3c9 DH |
1523 | NULL, |
1524 | }; | |
1525 | ||
6d75db30 SY |
1526 | static const struct attribute_group rc_dev_rw_protocol_attr_grp = { |
1527 | .attrs = rc_dev_rw_protocol_attrs, | |
1528 | }; | |
1529 | ||
1530 | static struct attribute *rc_dev_ro_protocol_attrs[] = { | |
1531 | &dev_attr_ro_protocols.attr, | |
1532 | NULL, | |
1533 | }; | |
1534 | ||
1535 | static const struct attribute_group rc_dev_ro_protocol_attr_grp = { | |
1536 | .attrs = rc_dev_ro_protocol_attrs, | |
99b0f3c9 DH |
1537 | }; |
1538 | ||
99b0f3c9 | 1539 | static struct attribute *rc_dev_filter_attrs[] = { |
00942d1a JH |
1540 | &dev_attr_filter.attr.attr, |
1541 | &dev_attr_filter_mask.attr.attr, | |
bc2a6c57 MCC |
1542 | NULL, |
1543 | }; | |
1544 | ||
db68102c | 1545 | static const struct attribute_group rc_dev_filter_attr_grp = { |
99b0f3c9 | 1546 | .attrs = rc_dev_filter_attrs, |
bc2a6c57 MCC |
1547 | }; |
1548 | ||
99b0f3c9 DH |
1549 | static struct attribute *rc_dev_wakeup_filter_attrs[] = { |
1550 | &dev_attr_wakeup_filter.attr.attr, | |
1551 | &dev_attr_wakeup_filter_mask.attr.attr, | |
0751d33c | 1552 | &dev_attr_wakeup_protocols.attr, |
99b0f3c9 DH |
1553 | NULL, |
1554 | }; | |
1555 | ||
db68102c | 1556 | static const struct attribute_group rc_dev_wakeup_filter_attr_grp = { |
99b0f3c9 | 1557 | .attrs = rc_dev_wakeup_filter_attrs, |
bc2a6c57 MCC |
1558 | }; |
1559 | ||
f03f02f9 | 1560 | static const struct device_type rc_dev_type = { |
d8b4b582 | 1561 | .release = rc_dev_release, |
bc2a6c57 MCC |
1562 | .uevent = rc_dev_uevent, |
1563 | }; | |
1564 | ||
0f7499fd | 1565 | struct rc_dev *rc_allocate_device(enum rc_driver_type type) |
bc2a6c57 | 1566 | { |
d8b4b582 | 1567 | struct rc_dev *dev; |
bc2a6c57 | 1568 | |
d8b4b582 DH |
1569 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
1570 | if (!dev) | |
1571 | return NULL; | |
1572 | ||
d34aee10 AS |
1573 | if (type != RC_DRIVER_IR_RAW_TX) { |
1574 | dev->input_dev = input_allocate_device(); | |
1575 | if (!dev->input_dev) { | |
1576 | kfree(dev); | |
1577 | return NULL; | |
1578 | } | |
1579 | ||
1580 | dev->input_dev->getkeycode = ir_getkeycode; | |
1581 | dev->input_dev->setkeycode = ir_setkeycode; | |
1582 | input_set_drvdata(dev->input_dev, dev); | |
d8b4b582 | 1583 | |
b17ec78a | 1584 | timer_setup(&dev->timer_keyup, ir_timer_keyup, 0); |
d8b4b582 | 1585 | |
d34aee10 AS |
1586 | spin_lock_init(&dev->rc_map.lock); |
1587 | spin_lock_init(&dev->keylock); | |
1588 | } | |
08aeb7c9 | 1589 | mutex_init(&dev->lock); |
bc2a6c57 | 1590 | |
d8b4b582 | 1591 | dev->dev.type = &rc_dev_type; |
40fc5325 | 1592 | dev->dev.class = &rc_class; |
d8b4b582 DH |
1593 | device_initialize(&dev->dev); |
1594 | ||
0f7499fd AS |
1595 | dev->driver_type = type; |
1596 | ||
d8b4b582 DH |
1597 | __module_get(THIS_MODULE); |
1598 | return dev; | |
1599 | } | |
1600 | EXPORT_SYMBOL_GPL(rc_allocate_device); | |
1601 | ||
1602 | void rc_free_device(struct rc_dev *dev) | |
bc2a6c57 | 1603 | { |
b05681b9 MCC |
1604 | if (!dev) |
1605 | return; | |
1606 | ||
3dd94f00 | 1607 | input_free_device(dev->input_dev); |
b05681b9 MCC |
1608 | |
1609 | put_device(&dev->dev); | |
1610 | ||
47cae1e1 MK |
1611 | /* kfree(dev) will be called by the callback function |
1612 | rc_dev_release() */ | |
1613 | ||
b05681b9 | 1614 | module_put(THIS_MODULE); |
d8b4b582 DH |
1615 | } |
1616 | EXPORT_SYMBOL_GPL(rc_free_device); | |
1617 | ||
ddbf7d5a HK |
1618 | static void devm_rc_alloc_release(struct device *dev, void *res) |
1619 | { | |
1620 | rc_free_device(*(struct rc_dev **)res); | |
1621 | } | |
1622 | ||
0f7499fd AS |
1623 | struct rc_dev *devm_rc_allocate_device(struct device *dev, |
1624 | enum rc_driver_type type) | |
ddbf7d5a HK |
1625 | { |
1626 | struct rc_dev **dr, *rc; | |
1627 | ||
1628 | dr = devres_alloc(devm_rc_alloc_release, sizeof(*dr), GFP_KERNEL); | |
1629 | if (!dr) | |
1630 | return NULL; | |
1631 | ||
0f7499fd | 1632 | rc = rc_allocate_device(type); |
ddbf7d5a HK |
1633 | if (!rc) { |
1634 | devres_free(dr); | |
1635 | return NULL; | |
1636 | } | |
1637 | ||
1638 | rc->dev.parent = dev; | |
1639 | rc->managed_alloc = true; | |
1640 | *dr = rc; | |
1641 | devres_add(dev, dr); | |
1642 | ||
1643 | return rc; | |
1644 | } | |
1645 | EXPORT_SYMBOL_GPL(devm_rc_allocate_device); | |
1646 | ||
f56928ab | 1647 | static int rc_prepare_rx_device(struct rc_dev *dev) |
d8b4b582 | 1648 | { |
fcb13097 | 1649 | int rc; |
7ff2c2bc | 1650 | struct rc_map *rc_map; |
6d741bfe | 1651 | u64 rc_proto; |
bc2a6c57 | 1652 | |
7ff2c2bc | 1653 | if (!dev->map_name) |
d8b4b582 | 1654 | return -EINVAL; |
bc2a6c57 | 1655 | |
d100e659 | 1656 | rc_map = rc_map_get(dev->map_name); |
b088ba65 | 1657 | if (!rc_map) |
d100e659 | 1658 | rc_map = rc_map_get(RC_MAP_EMPTY); |
b088ba65 | 1659 | if (!rc_map || !rc_map->scan || rc_map->size == 0) |
d8b4b582 DH |
1660 | return -EINVAL; |
1661 | ||
7ff2c2bc AS |
1662 | rc = ir_setkeytable(dev, rc_map); |
1663 | if (rc) | |
1664 | return rc; | |
1665 | ||
6d741bfe | 1666 | rc_proto = BIT_ULL(rc_map->rc_proto); |
7ff2c2bc | 1667 | |
831c4c81 SY |
1668 | if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol) |
1669 | dev->enabled_protocols = dev->allowed_protocols; | |
1670 | ||
41380868 | 1671 | if (dev->change_protocol) { |
6d741bfe | 1672 | rc = dev->change_protocol(dev, &rc_proto); |
7ff2c2bc AS |
1673 | if (rc < 0) |
1674 | goto out_table; | |
6d741bfe | 1675 | dev->enabled_protocols = rc_proto; |
7ff2c2bc AS |
1676 | } |
1677 | ||
41380868 | 1678 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
6d741bfe | 1679 | ir_raw_load_modules(&rc_proto); |
41380868 | 1680 | |
d8b4b582 DH |
1681 | set_bit(EV_KEY, dev->input_dev->evbit); |
1682 | set_bit(EV_REP, dev->input_dev->evbit); | |
1683 | set_bit(EV_MSC, dev->input_dev->evbit); | |
1684 | set_bit(MSC_SCAN, dev->input_dev->mscbit); | |
1685 | if (dev->open) | |
1686 | dev->input_dev->open = ir_open; | |
1687 | if (dev->close) | |
1688 | dev->input_dev->close = ir_close; | |
1689 | ||
b2aceb73 DH |
1690 | dev->input_dev->dev.parent = &dev->dev; |
1691 | memcpy(&dev->input_dev->id, &dev->input_id, sizeof(dev->input_id)); | |
1692 | dev->input_dev->phys = dev->input_phys; | |
518f4b26 | 1693 | dev->input_dev->name = dev->device_name; |
b2aceb73 | 1694 | |
f56928ab DH |
1695 | return 0; |
1696 | ||
1697 | out_table: | |
1698 | ir_free_table(&dev->rc_map); | |
1699 | ||
1700 | return rc; | |
1701 | } | |
1702 | ||
1703 | static int rc_setup_rx_device(struct rc_dev *dev) | |
1704 | { | |
1705 | int rc; | |
1706 | ||
b2aceb73 DH |
1707 | /* rc_open will be called here */ |
1708 | rc = input_register_device(dev->input_dev); | |
1709 | if (rc) | |
f56928ab | 1710 | return rc; |
b2aceb73 | 1711 | |
7ff2c2bc AS |
1712 | /* |
1713 | * Default delay of 250ms is too short for some protocols, especially | |
1714 | * since the timeout is currently set to 250ms. Increase it to 500ms, | |
1715 | * to avoid wrong repetition of the keycodes. Note that this must be | |
1716 | * set after the call to input_register_device(). | |
1717 | */ | |
1718 | dev->input_dev->rep[REP_DELAY] = 500; | |
1719 | ||
1720 | /* | |
1721 | * As a repeat event on protocols like RC-5 and NEC take as long as | |
1722 | * 110/114ms, using 33ms as a repeat period is not the right thing | |
1723 | * to do. | |
1724 | */ | |
1725 | dev->input_dev->rep[REP_PERIOD] = 125; | |
1726 | ||
7ff2c2bc | 1727 | return 0; |
7ff2c2bc AS |
1728 | } |
1729 | ||
1730 | static void rc_free_rx_device(struct rc_dev *dev) | |
1731 | { | |
f56928ab | 1732 | if (!dev) |
7ff2c2bc AS |
1733 | return; |
1734 | ||
f56928ab DH |
1735 | if (dev->input_dev) { |
1736 | input_unregister_device(dev->input_dev); | |
1737 | dev->input_dev = NULL; | |
1738 | } | |
7ff2c2bc | 1739 | |
f56928ab | 1740 | ir_free_table(&dev->rc_map); |
7ff2c2bc AS |
1741 | } |
1742 | ||
1743 | int rc_register_device(struct rc_dev *dev) | |
1744 | { | |
7ff2c2bc AS |
1745 | const char *path; |
1746 | int attr = 0; | |
1747 | int minor; | |
1748 | int rc; | |
1749 | ||
1750 | if (!dev) | |
1751 | return -EINVAL; | |
1752 | ||
fcb13097 DH |
1753 | minor = ida_simple_get(&rc_ida, 0, RC_DEV_MAX, GFP_KERNEL); |
1754 | if (minor < 0) | |
1755 | return minor; | |
1756 | ||
1757 | dev->minor = minor; | |
1758 | dev_set_name(&dev->dev, "rc%u", dev->minor); | |
1759 | dev_set_drvdata(&dev->dev, dev); | |
587d1b06 | 1760 | |
99b0f3c9 | 1761 | dev->dev.groups = dev->sysfs_groups; |
6d75db30 SY |
1762 | if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol) |
1763 | dev->sysfs_groups[attr++] = &rc_dev_ro_protocol_attr_grp; | |
1764 | else if (dev->driver_type != RC_DRIVER_IR_RAW_TX) | |
1765 | dev->sysfs_groups[attr++] = &rc_dev_rw_protocol_attr_grp; | |
99b0f3c9 | 1766 | if (dev->s_filter) |
120703f9 | 1767 | dev->sysfs_groups[attr++] = &rc_dev_filter_attr_grp; |
99b0f3c9 DH |
1768 | if (dev->s_wakeup_filter) |
1769 | dev->sysfs_groups[attr++] = &rc_dev_wakeup_filter_attr_grp; | |
99b0f3c9 DH |
1770 | dev->sysfs_groups[attr++] = NULL; |
1771 | ||
a60d64b1 | 1772 | if (dev->driver_type == RC_DRIVER_IR_RAW) { |
f56928ab DH |
1773 | rc = ir_raw_event_prepare(dev); |
1774 | if (rc < 0) | |
1775 | goto out_minor; | |
1776 | } | |
1777 | ||
1778 | if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { | |
1779 | rc = rc_prepare_rx_device(dev); | |
1780 | if (rc) | |
1781 | goto out_raw; | |
1782 | } | |
1783 | ||
d8b4b582 DH |
1784 | rc = device_add(&dev->dev); |
1785 | if (rc) | |
f56928ab | 1786 | goto out_rx_free; |
bc2a6c57 | 1787 | |
d8b4b582 | 1788 | path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL); |
4dc0e908 | 1789 | dev_info(&dev->dev, "%s as %s\n", |
518f4b26 | 1790 | dev->device_name ?: "Unspecified device", path ?: "N/A"); |
bc2a6c57 MCC |
1791 | kfree(path); |
1792 | ||
f56928ab DH |
1793 | if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { |
1794 | rc = rc_setup_rx_device(dev); | |
1795 | if (rc) | |
1796 | goto out_dev; | |
1797 | } | |
1798 | ||
a60d64b1 SY |
1799 | /* Ensure that the lirc kfifo is setup before we start the thread */ |
1800 | if (dev->driver_type != RC_DRIVER_SCANCODE) { | |
1801 | rc = ir_lirc_register(dev); | |
d8b4b582 | 1802 | if (rc < 0) |
f56928ab | 1803 | goto out_rx; |
d8b4b582 DH |
1804 | } |
1805 | ||
a60d64b1 SY |
1806 | if (dev->driver_type == RC_DRIVER_IR_RAW) { |
1807 | rc = ir_raw_event_register(dev); | |
1808 | if (rc < 0) | |
1809 | goto out_lirc; | |
1810 | } | |
1811 | ||
7790e81f SY |
1812 | dev->registered = true; |
1813 | ||
7ff2c2bc | 1814 | IR_dprintk(1, "Registered rc%u (driver: %s)\n", |
fcb13097 | 1815 | dev->minor, |
7ff2c2bc | 1816 | dev->driver_name ? dev->driver_name : "unknown"); |
d8b4b582 | 1817 | |
bc2a6c57 | 1818 | return 0; |
d8b4b582 | 1819 | |
a60d64b1 SY |
1820 | out_lirc: |
1821 | if (dev->driver_type != RC_DRIVER_SCANCODE) | |
1822 | ir_lirc_unregister(dev); | |
f56928ab DH |
1823 | out_rx: |
1824 | rc_free_rx_device(dev); | |
d8b4b582 DH |
1825 | out_dev: |
1826 | device_del(&dev->dev); | |
f56928ab DH |
1827 | out_rx_free: |
1828 | ir_free_table(&dev->rc_map); | |
1829 | out_raw: | |
1830 | ir_raw_event_free(dev); | |
1831 | out_minor: | |
fcb13097 | 1832 | ida_simple_remove(&rc_ida, minor); |
d8b4b582 | 1833 | return rc; |
bc2a6c57 | 1834 | } |
d8b4b582 | 1835 | EXPORT_SYMBOL_GPL(rc_register_device); |
bc2a6c57 | 1836 | |
ddbf7d5a HK |
1837 | static void devm_rc_release(struct device *dev, void *res) |
1838 | { | |
1839 | rc_unregister_device(*(struct rc_dev **)res); | |
1840 | } | |
1841 | ||
1842 | int devm_rc_register_device(struct device *parent, struct rc_dev *dev) | |
1843 | { | |
1844 | struct rc_dev **dr; | |
1845 | int ret; | |
1846 | ||
1847 | dr = devres_alloc(devm_rc_release, sizeof(*dr), GFP_KERNEL); | |
1848 | if (!dr) | |
1849 | return -ENOMEM; | |
1850 | ||
1851 | ret = rc_register_device(dev); | |
1852 | if (ret) { | |
1853 | devres_free(dr); | |
1854 | return ret; | |
1855 | } | |
1856 | ||
1857 | *dr = dev; | |
1858 | devres_add(parent, dr); | |
1859 | ||
1860 | return 0; | |
1861 | } | |
1862 | EXPORT_SYMBOL_GPL(devm_rc_register_device); | |
1863 | ||
d8b4b582 | 1864 | void rc_unregister_device(struct rc_dev *dev) |
bc2a6c57 | 1865 | { |
d8b4b582 DH |
1866 | if (!dev) |
1867 | return; | |
bc2a6c57 | 1868 | |
d8b4b582 | 1869 | del_timer_sync(&dev->timer_keyup); |
bc2a6c57 | 1870 | |
d8b4b582 DH |
1871 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1872 | ir_raw_event_unregister(dev); | |
1873 | ||
7ff2c2bc | 1874 | rc_free_rx_device(dev); |
d8b4b582 | 1875 | |
7790e81f SY |
1876 | mutex_lock(&dev->lock); |
1877 | dev->registered = false; | |
1878 | mutex_unlock(&dev->lock); | |
1879 | ||
1880 | /* | |
1881 | * lirc device should be freed with dev->registered = false, so | |
1882 | * that userspace polling will get notified. | |
1883 | */ | |
a60d64b1 SY |
1884 | if (dev->driver_type != RC_DRIVER_SCANCODE) |
1885 | ir_lirc_unregister(dev); | |
1886 | ||
b05681b9 | 1887 | device_del(&dev->dev); |
d8b4b582 | 1888 | |
fcb13097 DH |
1889 | ida_simple_remove(&rc_ida, dev->minor); |
1890 | ||
ddbf7d5a HK |
1891 | if (!dev->managed_alloc) |
1892 | rc_free_device(dev); | |
bc2a6c57 | 1893 | } |
b05681b9 | 1894 | |
d8b4b582 | 1895 | EXPORT_SYMBOL_GPL(rc_unregister_device); |
bc2a6c57 MCC |
1896 | |
1897 | /* | |
1898 | * Init/exit code for the module. Basically, creates/removes /sys/class/rc | |
1899 | */ | |
1900 | ||
6bda9644 | 1901 | static int __init rc_core_init(void) |
bc2a6c57 | 1902 | { |
40fc5325 | 1903 | int rc = class_register(&rc_class); |
bc2a6c57 | 1904 | if (rc) { |
d3d96820 | 1905 | pr_err("rc_core: unable to register rc class\n"); |
bc2a6c57 MCC |
1906 | return rc; |
1907 | } | |
1908 | ||
a60d64b1 SY |
1909 | rc = lirc_dev_init(); |
1910 | if (rc) { | |
1911 | pr_err("rc_core: unable to init lirc\n"); | |
1912 | class_unregister(&rc_class); | |
1913 | return 0; | |
1914 | } | |
1915 | ||
153a60bb | 1916 | led_trigger_register_simple("rc-feedback", &led_feedback); |
d100e659 | 1917 | rc_map_register(&empty_map); |
bc2a6c57 MCC |
1918 | |
1919 | return 0; | |
1920 | } | |
1921 | ||
6bda9644 | 1922 | static void __exit rc_core_exit(void) |
bc2a6c57 | 1923 | { |
a60d64b1 | 1924 | lirc_dev_exit(); |
40fc5325 | 1925 | class_unregister(&rc_class); |
153a60bb | 1926 | led_trigger_unregister_simple(led_feedback); |
d100e659 | 1927 | rc_map_unregister(&empty_map); |
bc2a6c57 MCC |
1928 | } |
1929 | ||
e76d4ce4 | 1930 | subsys_initcall(rc_core_init); |
6bda9644 | 1931 | module_exit(rc_core_exit); |
bc2a6c57 | 1932 | |
6bda9644 MCC |
1933 | int rc_core_debug; /* ir_debug level (0,1,2) */ |
1934 | EXPORT_SYMBOL_GPL(rc_core_debug); | |
1935 | module_param_named(debug, rc_core_debug, int, 0644); | |
446e4a64 | 1936 | |
37e59f87 | 1937 | MODULE_AUTHOR("Mauro Carvalho Chehab"); |
20835280 | 1938 | MODULE_LICENSE("GPL v2"); |