Commit | Line | Data |
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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[] = { | |
28492256 SY |
29 | [RC_PROTO_UNKNOWN] = { .name = "unknown", .repeat_period = 125 }, |
30 | [RC_PROTO_OTHER] = { .name = "other", .repeat_period = 125 }, | |
6d741bfe | 31 | [RC_PROTO_RC5] = { .name = "rc-5", |
28492256 | 32 | .scancode_bits = 0x1f7f, .repeat_period = 114 }, |
6d741bfe | 33 | [RC_PROTO_RC5X_20] = { .name = "rc-5x-20", |
28492256 | 34 | .scancode_bits = 0x1f7f3f, .repeat_period = 114 }, |
6d741bfe | 35 | [RC_PROTO_RC5_SZ] = { .name = "rc-5-sz", |
28492256 | 36 | .scancode_bits = 0x2fff, .repeat_period = 114 }, |
6d741bfe | 37 | [RC_PROTO_JVC] = { .name = "jvc", |
28492256 | 38 | .scancode_bits = 0xffff, .repeat_period = 125 }, |
6d741bfe | 39 | [RC_PROTO_SONY12] = { .name = "sony-12", |
28492256 | 40 | .scancode_bits = 0x1f007f, .repeat_period = 100 }, |
6d741bfe | 41 | [RC_PROTO_SONY15] = { .name = "sony-15", |
28492256 | 42 | .scancode_bits = 0xff007f, .repeat_period = 100 }, |
6d741bfe | 43 | [RC_PROTO_SONY20] = { .name = "sony-20", |
28492256 | 44 | .scancode_bits = 0x1fff7f, .repeat_period = 100 }, |
6d741bfe | 45 | [RC_PROTO_NEC] = { .name = "nec", |
28492256 | 46 | .scancode_bits = 0xffff, .repeat_period = 110 }, |
6d741bfe | 47 | [RC_PROTO_NECX] = { .name = "nec-x", |
28492256 | 48 | .scancode_bits = 0xffffff, .repeat_period = 110 }, |
6d741bfe | 49 | [RC_PROTO_NEC32] = { .name = "nec-32", |
28492256 | 50 | .scancode_bits = 0xffffffff, .repeat_period = 110 }, |
6d741bfe | 51 | [RC_PROTO_SANYO] = { .name = "sanyo", |
28492256 | 52 | .scancode_bits = 0x1fffff, .repeat_period = 125 }, |
6d741bfe | 53 | [RC_PROTO_MCIR2_KBD] = { .name = "mcir2-kbd", |
53932760 | 54 | .scancode_bits = 0xffffff, .repeat_period = 100 }, |
6d741bfe | 55 | [RC_PROTO_MCIR2_MSE] = { .name = "mcir2-mse", |
28492256 | 56 | .scancode_bits = 0x1fffff, .repeat_period = 100 }, |
6d741bfe | 57 | [RC_PROTO_RC6_0] = { .name = "rc-6-0", |
28492256 | 58 | .scancode_bits = 0xffff, .repeat_period = 114 }, |
6d741bfe | 59 | [RC_PROTO_RC6_6A_20] = { .name = "rc-6-6a-20", |
28492256 | 60 | .scancode_bits = 0xfffff, .repeat_period = 114 }, |
6d741bfe | 61 | [RC_PROTO_RC6_6A_24] = { .name = "rc-6-6a-24", |
28492256 | 62 | .scancode_bits = 0xffffff, .repeat_period = 114 }, |
6d741bfe | 63 | [RC_PROTO_RC6_6A_32] = { .name = "rc-6-6a-32", |
28492256 | 64 | .scancode_bits = 0xffffffff, .repeat_period = 114 }, |
6d741bfe | 65 | [RC_PROTO_RC6_MCE] = { .name = "rc-6-mce", |
28492256 | 66 | .scancode_bits = 0xffff7fff, .repeat_period = 114 }, |
6d741bfe | 67 | [RC_PROTO_SHARP] = { .name = "sharp", |
28492256 SY |
68 | .scancode_bits = 0x1fff, .repeat_period = 125 }, |
69 | [RC_PROTO_XMP] = { .name = "xmp", .repeat_period = 125 }, | |
70 | [RC_PROTO_CEC] = { .name = "cec", .repeat_period = 0 }, | |
447dcc0c | 71 | [RC_PROTO_IMON] = { .name = "imon", |
28492256 | 72 | .scancode_bits = 0x7fffffff, .repeat_period = 114 }, |
d57ea877 | 73 | }; |
a374fef4 | 74 | |
4c7b355d | 75 | /* Used to keep track of known keymaps */ |
631493ec MCC |
76 | static LIST_HEAD(rc_map_list); |
77 | static DEFINE_SPINLOCK(rc_map_lock); | |
153a60bb | 78 | static struct led_trigger *led_feedback; |
631493ec | 79 | |
fcb13097 DH |
80 | /* Used to keep track of rc devices */ |
81 | static DEFINE_IDA(rc_ida); | |
82 | ||
d100e659 | 83 | static struct rc_map_list *seek_rc_map(const char *name) |
631493ec | 84 | { |
d100e659 | 85 | struct rc_map_list *map = NULL; |
631493ec MCC |
86 | |
87 | spin_lock(&rc_map_lock); | |
88 | list_for_each_entry(map, &rc_map_list, list) { | |
89 | if (!strcmp(name, map->map.name)) { | |
90 | spin_unlock(&rc_map_lock); | |
91 | return map; | |
92 | } | |
93 | } | |
94 | spin_unlock(&rc_map_lock); | |
95 | ||
96 | return NULL; | |
97 | } | |
98 | ||
d100e659 | 99 | struct rc_map *rc_map_get(const char *name) |
631493ec MCC |
100 | { |
101 | ||
d100e659 | 102 | struct rc_map_list *map; |
631493ec MCC |
103 | |
104 | map = seek_rc_map(name); | |
2ff56fad | 105 | #ifdef CONFIG_MODULES |
631493ec | 106 | if (!map) { |
8ea5488a | 107 | int rc = request_module("%s", name); |
631493ec | 108 | if (rc < 0) { |
d3d96820 | 109 | pr_err("Couldn't load IR keymap %s\n", name); |
631493ec MCC |
110 | return NULL; |
111 | } | |
112 | msleep(20); /* Give some time for IR to register */ | |
113 | ||
114 | map = seek_rc_map(name); | |
115 | } | |
116 | #endif | |
117 | if (!map) { | |
d3d96820 | 118 | pr_err("IR keymap %s not found\n", name); |
631493ec MCC |
119 | return NULL; |
120 | } | |
121 | ||
122 | printk(KERN_INFO "Registered IR keymap %s\n", map->map.name); | |
123 | ||
124 | return &map->map; | |
125 | } | |
d100e659 | 126 | EXPORT_SYMBOL_GPL(rc_map_get); |
631493ec | 127 | |
d100e659 | 128 | int rc_map_register(struct rc_map_list *map) |
631493ec MCC |
129 | { |
130 | spin_lock(&rc_map_lock); | |
131 | list_add_tail(&map->list, &rc_map_list); | |
132 | spin_unlock(&rc_map_lock); | |
133 | return 0; | |
134 | } | |
d100e659 | 135 | EXPORT_SYMBOL_GPL(rc_map_register); |
631493ec | 136 | |
d100e659 | 137 | void rc_map_unregister(struct rc_map_list *map) |
631493ec MCC |
138 | { |
139 | spin_lock(&rc_map_lock); | |
140 | list_del(&map->list); | |
141 | spin_unlock(&rc_map_lock); | |
142 | } | |
d100e659 | 143 | EXPORT_SYMBOL_GPL(rc_map_unregister); |
631493ec MCC |
144 | |
145 | ||
2f4f58d6 | 146 | static struct rc_map_table empty[] = { |
631493ec MCC |
147 | { 0x2a, KEY_COFFEE }, |
148 | }; | |
149 | ||
d100e659 | 150 | static struct rc_map_list empty_map = { |
631493ec | 151 | .map = { |
6d741bfe SY |
152 | .scan = empty, |
153 | .size = ARRAY_SIZE(empty), | |
154 | .rc_proto = RC_PROTO_UNKNOWN, /* Legacy IR type */ | |
155 | .name = RC_MAP_EMPTY, | |
631493ec MCC |
156 | } |
157 | }; | |
158 | ||
9f470095 DT |
159 | /** |
160 | * ir_create_table() - initializes a scancode table | |
1f17f684 | 161 | * @dev: the rc_dev device |
b088ba65 | 162 | * @rc_map: the rc_map to initialize |
9f470095 | 163 | * @name: name to assign to the table |
6d741bfe | 164 | * @rc_proto: ir type to assign to the new table |
9f470095 | 165 | * @size: initial size of the table |
9f470095 | 166 | * |
b088ba65 | 167 | * This routine will initialize the rc_map and will allocate |
d8b4b582 | 168 | * memory to hold at least the specified number of elements. |
f67f366c MCC |
169 | * |
170 | * return: zero on success or a negative error code | |
9f470095 | 171 | */ |
1f17f684 | 172 | static int ir_create_table(struct rc_dev *dev, struct rc_map *rc_map, |
6d741bfe | 173 | const char *name, u64 rc_proto, size_t size) |
9f470095 | 174 | { |
d54fc3bb HV |
175 | rc_map->name = kstrdup(name, GFP_KERNEL); |
176 | if (!rc_map->name) | |
177 | return -ENOMEM; | |
6d741bfe | 178 | rc_map->rc_proto = rc_proto; |
2f4f58d6 MCC |
179 | rc_map->alloc = roundup_pow_of_two(size * sizeof(struct rc_map_table)); |
180 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); | |
b088ba65 | 181 | rc_map->scan = kmalloc(rc_map->alloc, GFP_KERNEL); |
d54fc3bb HV |
182 | if (!rc_map->scan) { |
183 | kfree(rc_map->name); | |
184 | rc_map->name = NULL; | |
9f470095 | 185 | return -ENOMEM; |
d54fc3bb | 186 | } |
9f470095 | 187 | |
1f17f684 SY |
188 | dev_dbg(&dev->dev, "Allocated space for %u keycode entries (%u bytes)\n", |
189 | rc_map->size, rc_map->alloc); | |
9f470095 DT |
190 | return 0; |
191 | } | |
192 | ||
193 | /** | |
194 | * ir_free_table() - frees memory allocated by a scancode table | |
b088ba65 | 195 | * @rc_map: the table whose mappings need to be freed |
9f470095 DT |
196 | * |
197 | * This routine will free memory alloctaed for key mappings used by given | |
198 | * scancode table. | |
199 | */ | |
b088ba65 | 200 | static void ir_free_table(struct rc_map *rc_map) |
9f470095 | 201 | { |
b088ba65 | 202 | rc_map->size = 0; |
d54fc3bb | 203 | kfree(rc_map->name); |
c183d358 | 204 | rc_map->name = NULL; |
b088ba65 MCC |
205 | kfree(rc_map->scan); |
206 | rc_map->scan = NULL; | |
9f470095 DT |
207 | } |
208 | ||
7fee03e4 | 209 | /** |
b3074c0a | 210 | * ir_resize_table() - resizes a scancode table if necessary |
1f17f684 | 211 | * @dev: the rc_dev device |
b088ba65 | 212 | * @rc_map: the rc_map to resize |
9f470095 | 213 | * @gfp_flags: gfp flags to use when allocating memory |
7fee03e4 | 214 | * |
b088ba65 | 215 | * This routine will shrink the rc_map if it has lots of |
b3074c0a | 216 | * unused entries and grow it if it is full. |
f67f366c MCC |
217 | * |
218 | * return: zero on success or a negative error code | |
7fee03e4 | 219 | */ |
1f17f684 SY |
220 | static int ir_resize_table(struct rc_dev *dev, struct rc_map *rc_map, |
221 | gfp_t gfp_flags) | |
7fee03e4 | 222 | { |
b088ba65 | 223 | unsigned int oldalloc = rc_map->alloc; |
b3074c0a | 224 | unsigned int newalloc = oldalloc; |
2f4f58d6 MCC |
225 | struct rc_map_table *oldscan = rc_map->scan; |
226 | struct rc_map_table *newscan; | |
b3074c0a | 227 | |
b088ba65 | 228 | if (rc_map->size == rc_map->len) { |
b3074c0a | 229 | /* All entries in use -> grow keytable */ |
b088ba65 | 230 | if (rc_map->alloc >= IR_TAB_MAX_SIZE) |
b3074c0a | 231 | return -ENOMEM; |
7fee03e4 | 232 | |
b3074c0a | 233 | newalloc *= 2; |
1f17f684 | 234 | dev_dbg(&dev->dev, "Growing table to %u bytes\n", newalloc); |
b3074c0a | 235 | } |
7fee03e4 | 236 | |
b088ba65 | 237 | if ((rc_map->len * 3 < rc_map->size) && (oldalloc > IR_TAB_MIN_SIZE)) { |
b3074c0a DH |
238 | /* Less than 1/3 of entries in use -> shrink keytable */ |
239 | newalloc /= 2; | |
1f17f684 | 240 | dev_dbg(&dev->dev, "Shrinking table to %u bytes\n", newalloc); |
b3074c0a | 241 | } |
7fee03e4 | 242 | |
b3074c0a DH |
243 | if (newalloc == oldalloc) |
244 | return 0; | |
7fee03e4 | 245 | |
9f470095 | 246 | newscan = kmalloc(newalloc, gfp_flags); |
1f17f684 | 247 | if (!newscan) |
b3074c0a | 248 | return -ENOMEM; |
7fee03e4 | 249 | |
2f4f58d6 | 250 | memcpy(newscan, rc_map->scan, rc_map->len * sizeof(struct rc_map_table)); |
b088ba65 MCC |
251 | rc_map->scan = newscan; |
252 | rc_map->alloc = newalloc; | |
2f4f58d6 | 253 | rc_map->size = rc_map->alloc / sizeof(struct rc_map_table); |
b3074c0a DH |
254 | kfree(oldscan); |
255 | return 0; | |
7fee03e4 MCC |
256 | } |
257 | ||
f6fc5049 | 258 | /** |
9f470095 | 259 | * ir_update_mapping() - set a keycode in the scancode->keycode table |
d8b4b582 | 260 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 261 | * @rc_map: scancode table to be adjusted |
9f470095 | 262 | * @index: index of the mapping that needs to be updated |
f67f366c | 263 | * @new_keycode: the desired keycode |
9f470095 | 264 | * |
d8b4b582 | 265 | * This routine is used to update scancode->keycode mapping at given |
9f470095 | 266 | * position. |
f67f366c MCC |
267 | * |
268 | * return: previous keycode assigned to the mapping | |
269 | * | |
9f470095 | 270 | */ |
d8b4b582 | 271 | static unsigned int ir_update_mapping(struct rc_dev *dev, |
b088ba65 | 272 | struct rc_map *rc_map, |
9f470095 DT |
273 | unsigned int index, |
274 | unsigned int new_keycode) | |
275 | { | |
b088ba65 | 276 | int old_keycode = rc_map->scan[index].keycode; |
9f470095 DT |
277 | |
278 | /* Did the user wish to remove the mapping? */ | |
279 | if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) { | |
1f17f684 SY |
280 | dev_dbg(&dev->dev, "#%d: Deleting scan 0x%04x\n", |
281 | index, rc_map->scan[index].scancode); | |
b088ba65 MCC |
282 | rc_map->len--; |
283 | memmove(&rc_map->scan[index], &rc_map->scan[index+ 1], | |
2f4f58d6 | 284 | (rc_map->len - index) * sizeof(struct rc_map_table)); |
9f470095 | 285 | } else { |
1f17f684 SY |
286 | dev_dbg(&dev->dev, "#%d: %s scan 0x%04x with key 0x%04x\n", |
287 | index, | |
288 | old_keycode == KEY_RESERVED ? "New" : "Replacing", | |
289 | rc_map->scan[index].scancode, new_keycode); | |
b088ba65 | 290 | rc_map->scan[index].keycode = new_keycode; |
9f470095 DT |
291 | } |
292 | ||
293 | if (old_keycode != KEY_RESERVED) { | |
9f470095 | 294 | /* Possibly shrink the keytable, failure is not a problem */ |
1f17f684 | 295 | ir_resize_table(dev, rc_map, GFP_ATOMIC); |
9f470095 DT |
296 | } |
297 | ||
298 | return old_keycode; | |
299 | } | |
300 | ||
301 | /** | |
4c7b355d | 302 | * ir_establish_scancode() - set a keycode in the scancode->keycode table |
d8b4b582 | 303 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 304 | * @rc_map: scancode table to be searched |
9f470095 DT |
305 | * @scancode: the desired scancode |
306 | * @resize: controls whether we allowed to resize the table to | |
25985edc | 307 | * accommodate not yet present scancodes |
f6fc5049 | 308 | * |
b088ba65 | 309 | * This routine is used to locate given scancode in rc_map. |
9f470095 DT |
310 | * If scancode is not yet present the routine will allocate a new slot |
311 | * for it. | |
f67f366c MCC |
312 | * |
313 | * return: index of the mapping containing scancode in question | |
314 | * or -1U in case of failure. | |
f6fc5049 | 315 | */ |
d8b4b582 | 316 | static unsigned int ir_establish_scancode(struct rc_dev *dev, |
b088ba65 | 317 | struct rc_map *rc_map, |
9f470095 DT |
318 | unsigned int scancode, |
319 | bool resize) | |
f6fc5049 | 320 | { |
b3074c0a | 321 | unsigned int i; |
9dfe4e83 MCC |
322 | |
323 | /* | |
324 | * Unfortunately, some hardware-based IR decoders don't provide | |
325 | * all bits for the complete IR code. In general, they provide only | |
326 | * the command part of the IR code. Yet, as it is possible to replace | |
327 | * the provided IR with another one, it is needed to allow loading | |
d8b4b582 DH |
328 | * IR tables from other remotes. So, we support specifying a mask to |
329 | * indicate the valid bits of the scancodes. | |
9dfe4e83 | 330 | */ |
9d2f1d3c DH |
331 | if (dev->scancode_mask) |
332 | scancode &= dev->scancode_mask; | |
b3074c0a DH |
333 | |
334 | /* First check if we already have a mapping for this ir command */ | |
b088ba65 MCC |
335 | for (i = 0; i < rc_map->len; i++) { |
336 | if (rc_map->scan[i].scancode == scancode) | |
9f470095 DT |
337 | return i; |
338 | ||
b3074c0a | 339 | /* Keytable is sorted from lowest to highest scancode */ |
b088ba65 | 340 | if (rc_map->scan[i].scancode >= scancode) |
b3074c0a | 341 | break; |
b3074c0a | 342 | } |
f6fc5049 | 343 | |
9f470095 | 344 | /* No previous mapping found, we might need to grow the table */ |
b088ba65 | 345 | if (rc_map->size == rc_map->len) { |
1f17f684 | 346 | if (!resize || ir_resize_table(dev, rc_map, GFP_ATOMIC)) |
9f470095 DT |
347 | return -1U; |
348 | } | |
35438946 | 349 | |
9f470095 | 350 | /* i is the proper index to insert our new keycode */ |
b088ba65 MCC |
351 | if (i < rc_map->len) |
352 | memmove(&rc_map->scan[i + 1], &rc_map->scan[i], | |
2f4f58d6 | 353 | (rc_map->len - i) * sizeof(struct rc_map_table)); |
b088ba65 MCC |
354 | rc_map->scan[i].scancode = scancode; |
355 | rc_map->scan[i].keycode = KEY_RESERVED; | |
356 | rc_map->len++; | |
f6fc5049 | 357 | |
9f470095 | 358 | return i; |
f6fc5049 MCC |
359 | } |
360 | ||
ef53a115 | 361 | /** |
b3074c0a | 362 | * ir_setkeycode() - set a keycode in the scancode->keycode table |
d8b4b582 | 363 | * @idev: the struct input_dev device descriptor |
f67f366c MCC |
364 | * @ke: Input keymap entry |
365 | * @old_keycode: result | |
ef53a115 | 366 | * |
b3074c0a | 367 | * This routine is used to handle evdev EVIOCSKEY ioctl. |
f67f366c MCC |
368 | * |
369 | * return: -EINVAL if the keycode could not be inserted, otherwise zero. | |
ef53a115 | 370 | */ |
d8b4b582 | 371 | static int ir_setkeycode(struct input_dev *idev, |
9f470095 DT |
372 | const struct input_keymap_entry *ke, |
373 | unsigned int *old_keycode) | |
ef53a115 | 374 | { |
d8b4b582 | 375 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 376 | struct rc_map *rc_map = &rdev->rc_map; |
9f470095 DT |
377 | unsigned int index; |
378 | unsigned int scancode; | |
dea8a39f | 379 | int retval = 0; |
9f470095 | 380 | unsigned long flags; |
ef53a115 | 381 | |
b088ba65 | 382 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
383 | |
384 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
385 | index = ke->index; | |
b088ba65 | 386 | if (index >= rc_map->len) { |
9f470095 DT |
387 | retval = -EINVAL; |
388 | goto out; | |
389 | } | |
390 | } else { | |
391 | retval = input_scancode_to_scalar(ke, &scancode); | |
392 | if (retval) | |
393 | goto out; | |
394 | ||
b088ba65 MCC |
395 | index = ir_establish_scancode(rdev, rc_map, scancode, true); |
396 | if (index >= rc_map->len) { | |
9f470095 DT |
397 | retval = -ENOMEM; |
398 | goto out; | |
399 | } | |
400 | } | |
401 | ||
b088ba65 | 402 | *old_keycode = ir_update_mapping(rdev, rc_map, index, ke->keycode); |
9f470095 DT |
403 | |
404 | out: | |
b088ba65 | 405 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 406 | return retval; |
e97f4677 MCC |
407 | } |
408 | ||
409 | /** | |
b3074c0a | 410 | * ir_setkeytable() - sets several entries in the scancode->keycode table |
d8b4b582 | 411 | * @dev: the struct rc_dev device descriptor |
b088ba65 | 412 | * @from: the struct rc_map to copy entries from |
e97f4677 | 413 | * |
b3074c0a | 414 | * This routine is used to handle table initialization. |
f67f366c MCC |
415 | * |
416 | * return: -ENOMEM if all keycodes could not be inserted, otherwise zero. | |
e97f4677 | 417 | */ |
d8b4b582 | 418 | static int ir_setkeytable(struct rc_dev *dev, |
b088ba65 | 419 | const struct rc_map *from) |
e97f4677 | 420 | { |
b088ba65 | 421 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
422 | unsigned int i, index; |
423 | int rc; | |
424 | ||
1f17f684 SY |
425 | rc = ir_create_table(dev, rc_map, from->name, from->rc_proto, |
426 | from->size); | |
9f470095 DT |
427 | if (rc) |
428 | return rc; | |
429 | ||
b3074c0a | 430 | for (i = 0; i < from->size; i++) { |
b088ba65 | 431 | index = ir_establish_scancode(dev, rc_map, |
9f470095 | 432 | from->scan[i].scancode, false); |
b088ba65 | 433 | if (index >= rc_map->len) { |
9f470095 | 434 | rc = -ENOMEM; |
b3074c0a | 435 | break; |
9f470095 DT |
436 | } |
437 | ||
b088ba65 | 438 | ir_update_mapping(dev, rc_map, index, |
9f470095 | 439 | from->scan[i].keycode); |
e97f4677 | 440 | } |
9f470095 DT |
441 | |
442 | if (rc) | |
b088ba65 | 443 | ir_free_table(rc_map); |
9f470095 | 444 | |
b3074c0a | 445 | return rc; |
ef53a115 MCC |
446 | } |
447 | ||
8ca01d4f TM |
448 | static int rc_map_cmp(const void *key, const void *elt) |
449 | { | |
450 | const unsigned int *scancode = key; | |
451 | const struct rc_map_table *e = elt; | |
452 | ||
453 | if (*scancode < e->scancode) | |
454 | return -1; | |
455 | else if (*scancode > e->scancode) | |
456 | return 1; | |
457 | return 0; | |
458 | } | |
459 | ||
9f470095 DT |
460 | /** |
461 | * ir_lookup_by_scancode() - locate mapping by scancode | |
b088ba65 | 462 | * @rc_map: the struct rc_map to search |
9f470095 | 463 | * @scancode: scancode to look for in the table |
9f470095 DT |
464 | * |
465 | * This routine performs binary search in RC keykeymap table for | |
466 | * given scancode. | |
f67f366c MCC |
467 | * |
468 | * return: index in the table, -1U if not found | |
9f470095 | 469 | */ |
b088ba65 | 470 | static unsigned int ir_lookup_by_scancode(const struct rc_map *rc_map, |
9f470095 DT |
471 | unsigned int scancode) |
472 | { | |
8ca01d4f TM |
473 | struct rc_map_table *res; |
474 | ||
475 | res = bsearch(&scancode, rc_map->scan, rc_map->len, | |
476 | sizeof(struct rc_map_table), rc_map_cmp); | |
477 | if (!res) | |
478 | return -1U; | |
479 | else | |
480 | return res - rc_map->scan; | |
9f470095 DT |
481 | } |
482 | ||
ef53a115 | 483 | /** |
b3074c0a | 484 | * ir_getkeycode() - get a keycode from the scancode->keycode table |
d8b4b582 | 485 | * @idev: the struct input_dev device descriptor |
f67f366c | 486 | * @ke: Input keymap entry |
ef53a115 | 487 | * |
b3074c0a | 488 | * This routine is used to handle evdev EVIOCGKEY ioctl. |
f67f366c MCC |
489 | * |
490 | * return: always returns zero. | |
ef53a115 | 491 | */ |
d8b4b582 | 492 | static int ir_getkeycode(struct input_dev *idev, |
9f470095 | 493 | struct input_keymap_entry *ke) |
ef53a115 | 494 | { |
d8b4b582 | 495 | struct rc_dev *rdev = input_get_drvdata(idev); |
b088ba65 | 496 | struct rc_map *rc_map = &rdev->rc_map; |
2f4f58d6 | 497 | struct rc_map_table *entry; |
9f470095 DT |
498 | unsigned long flags; |
499 | unsigned int index; | |
500 | unsigned int scancode; | |
501 | int retval; | |
ef53a115 | 502 | |
b088ba65 | 503 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 DT |
504 | |
505 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
506 | index = ke->index; | |
507 | } else { | |
508 | retval = input_scancode_to_scalar(ke, &scancode); | |
509 | if (retval) | |
510 | goto out; | |
511 | ||
b088ba65 | 512 | index = ir_lookup_by_scancode(rc_map, scancode); |
9f470095 DT |
513 | } |
514 | ||
54e74b87 DT |
515 | if (index < rc_map->len) { |
516 | entry = &rc_map->scan[index]; | |
517 | ||
518 | ke->index = index; | |
519 | ke->keycode = entry->keycode; | |
520 | ke->len = sizeof(entry->scancode); | |
521 | memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode)); | |
522 | ||
523 | } else if (!(ke->flags & INPUT_KEYMAP_BY_INDEX)) { | |
524 | /* | |
525 | * We do not really know the valid range of scancodes | |
526 | * so let's respond with KEY_RESERVED to anything we | |
527 | * do not have mapping for [yet]. | |
528 | */ | |
529 | ke->index = index; | |
530 | ke->keycode = KEY_RESERVED; | |
531 | } else { | |
9f470095 DT |
532 | retval = -EINVAL; |
533 | goto out; | |
e97f4677 MCC |
534 | } |
535 | ||
47c5ba53 DT |
536 | retval = 0; |
537 | ||
9f470095 | 538 | out: |
b088ba65 | 539 | spin_unlock_irqrestore(&rc_map->lock, flags); |
9f470095 | 540 | return retval; |
ef53a115 MCC |
541 | } |
542 | ||
543 | /** | |
ca86674b | 544 | * rc_g_keycode_from_table() - gets the keycode that corresponds to a scancode |
d8b4b582 DH |
545 | * @dev: the struct rc_dev descriptor of the device |
546 | * @scancode: the scancode to look for | |
ef53a115 | 547 | * |
d8b4b582 DH |
548 | * This routine is used by drivers which need to convert a scancode to a |
549 | * keycode. Normally it should not be used since drivers should have no | |
550 | * interest in keycodes. | |
f67f366c MCC |
551 | * |
552 | * return: the corresponding keycode, or KEY_RESERVED | |
ef53a115 | 553 | */ |
ca86674b | 554 | u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode) |
ef53a115 | 555 | { |
b088ba65 | 556 | struct rc_map *rc_map = &dev->rc_map; |
9f470095 DT |
557 | unsigned int keycode; |
558 | unsigned int index; | |
559 | unsigned long flags; | |
560 | ||
b088ba65 | 561 | spin_lock_irqsave(&rc_map->lock, flags); |
9f470095 | 562 | |
b088ba65 MCC |
563 | index = ir_lookup_by_scancode(rc_map, scancode); |
564 | keycode = index < rc_map->len ? | |
565 | rc_map->scan[index].keycode : KEY_RESERVED; | |
9f470095 | 566 | |
b088ba65 | 567 | spin_unlock_irqrestore(&rc_map->lock, flags); |
ef53a115 | 568 | |
35438946 | 569 | if (keycode != KEY_RESERVED) |
1f17f684 SY |
570 | dev_dbg(&dev->dev, "%s: scancode 0x%04x keycode 0x%02x\n", |
571 | dev->device_name, scancode, keycode); | |
9f470095 | 572 | |
b3074c0a | 573 | return keycode; |
ef53a115 | 574 | } |
ca86674b | 575 | EXPORT_SYMBOL_GPL(rc_g_keycode_from_table); |
ef53a115 | 576 | |
6660de56 | 577 | /** |
62c65031 | 578 | * ir_do_keyup() - internal function to signal the release of a keypress |
d8b4b582 | 579 | * @dev: the struct rc_dev descriptor of the device |
98c32bcd | 580 | * @sync: whether or not to call input_sync |
6660de56 | 581 | * |
62c65031 DH |
582 | * This function is used internally to release a keypress, it must be |
583 | * called with keylock held. | |
a374fef4 | 584 | */ |
98c32bcd | 585 | static void ir_do_keyup(struct rc_dev *dev, bool sync) |
a374fef4 | 586 | { |
d8b4b582 | 587 | if (!dev->keypressed) |
a374fef4 DH |
588 | return; |
589 | ||
1f17f684 | 590 | dev_dbg(&dev->dev, "keyup key 0x%04x\n", dev->last_keycode); |
fb7ccc61 | 591 | del_timer(&dev->timer_repeat); |
d8b4b582 | 592 | input_report_key(dev->input_dev, dev->last_keycode, 0); |
153a60bb | 593 | led_trigger_event(led_feedback, LED_OFF); |
98c32bcd JW |
594 | if (sync) |
595 | input_sync(dev->input_dev); | |
d8b4b582 | 596 | dev->keypressed = false; |
a374fef4 | 597 | } |
62c65031 DH |
598 | |
599 | /** | |
ca86674b | 600 | * rc_keyup() - signals the release of a keypress |
d8b4b582 | 601 | * @dev: the struct rc_dev descriptor of the device |
62c65031 DH |
602 | * |
603 | * This routine is used to signal that a key has been released on the | |
604 | * remote control. | |
605 | */ | |
ca86674b | 606 | void rc_keyup(struct rc_dev *dev) |
62c65031 DH |
607 | { |
608 | unsigned long flags; | |
62c65031 | 609 | |
d8b4b582 | 610 | spin_lock_irqsave(&dev->keylock, flags); |
98c32bcd | 611 | ir_do_keyup(dev, true); |
d8b4b582 | 612 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 613 | } |
ca86674b | 614 | EXPORT_SYMBOL_GPL(rc_keyup); |
a374fef4 DH |
615 | |
616 | /** | |
617 | * ir_timer_keyup() - generates a keyup event after a timeout | |
f67f366c MCC |
618 | * |
619 | * @t: a pointer to the struct timer_list | |
a374fef4 DH |
620 | * |
621 | * This routine will generate a keyup event some time after a keydown event | |
622 | * is generated when no further activity has been detected. | |
6660de56 | 623 | */ |
b17ec78a | 624 | static void ir_timer_keyup(struct timer_list *t) |
6660de56 | 625 | { |
b17ec78a | 626 | struct rc_dev *dev = from_timer(dev, t, timer_keyup); |
a374fef4 DH |
627 | unsigned long flags; |
628 | ||
629 | /* | |
630 | * ir->keyup_jiffies is used to prevent a race condition if a | |
631 | * hardware interrupt occurs at this point and the keyup timer | |
632 | * event is moved further into the future as a result. | |
633 | * | |
634 | * The timer will then be reactivated and this function called | |
635 | * again in the future. We need to exit gracefully in that case | |
636 | * to allow the input subsystem to do its auto-repeat magic or | |
637 | * a keyup event might follow immediately after the keydown. | |
638 | */ | |
d8b4b582 DH |
639 | spin_lock_irqsave(&dev->keylock, flags); |
640 | if (time_is_before_eq_jiffies(dev->keyup_jiffies)) | |
98c32bcd | 641 | ir_do_keyup(dev, true); |
d8b4b582 | 642 | spin_unlock_irqrestore(&dev->keylock, flags); |
a374fef4 DH |
643 | } |
644 | ||
57c642cb SY |
645 | /** |
646 | * ir_timer_repeat() - generates a repeat event after a timeout | |
647 | * | |
648 | * @t: a pointer to the struct timer_list | |
649 | * | |
650 | * This routine will generate a soft repeat event every REP_PERIOD | |
651 | * milliseconds. | |
652 | */ | |
653 | static void ir_timer_repeat(struct timer_list *t) | |
654 | { | |
655 | struct rc_dev *dev = from_timer(dev, t, timer_repeat); | |
656 | struct input_dev *input = dev->input_dev; | |
657 | unsigned long flags; | |
658 | ||
659 | spin_lock_irqsave(&dev->keylock, flags); | |
660 | if (dev->keypressed) { | |
661 | input_event(input, EV_KEY, dev->last_keycode, 2); | |
662 | input_sync(input); | |
663 | if (input->rep[REP_PERIOD]) | |
664 | mod_timer(&dev->timer_repeat, jiffies + | |
665 | msecs_to_jiffies(input->rep[REP_PERIOD])); | |
666 | } | |
667 | spin_unlock_irqrestore(&dev->keylock, flags); | |
668 | } | |
669 | ||
f5dbee6e SY |
670 | static unsigned int repeat_period(int protocol) |
671 | { | |
672 | if (protocol >= ARRAY_SIZE(protocols)) | |
673 | return 100; | |
674 | ||
675 | return protocols[protocol].repeat_period; | |
676 | } | |
677 | ||
a374fef4 | 678 | /** |
ca86674b | 679 | * rc_repeat() - signals that a key is still pressed |
d8b4b582 | 680 | * @dev: the struct rc_dev descriptor of the device |
a374fef4 DH |
681 | * |
682 | * This routine is used by IR decoders when a repeat message which does | |
683 | * not include the necessary bits to reproduce the scancode has been | |
684 | * received. | |
685 | */ | |
ca86674b | 686 | void rc_repeat(struct rc_dev *dev) |
a374fef4 DH |
687 | { |
688 | unsigned long flags; | |
28492256 | 689 | unsigned int timeout = nsecs_to_jiffies(dev->timeout) + |
f5dbee6e | 690 | msecs_to_jiffies(repeat_period(dev->last_protocol)); |
b66218fd SY |
691 | struct lirc_scancode sc = { |
692 | .scancode = dev->last_scancode, .rc_proto = dev->last_protocol, | |
693 | .keycode = dev->keypressed ? dev->last_keycode : KEY_RESERVED, | |
694 | .flags = LIRC_SCANCODE_FLAG_REPEAT | | |
695 | (dev->last_toggle ? LIRC_SCANCODE_FLAG_TOGGLE : 0) | |
696 | }; | |
6660de56 | 697 | |
b66218fd | 698 | ir_lirc_scancode_event(dev, &sc); |
a374fef4 | 699 | |
b66218fd | 700 | spin_lock_irqsave(&dev->keylock, flags); |
6660de56 | 701 | |
265a2988 DH |
702 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, dev->last_scancode); |
703 | input_sync(dev->input_dev); | |
704 | ||
b66218fd | 705 | if (dev->keypressed) { |
28492256 | 706 | dev->keyup_jiffies = jiffies + timeout; |
b66218fd SY |
707 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); |
708 | } | |
a374fef4 | 709 | |
d8b4b582 | 710 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 711 | } |
ca86674b | 712 | EXPORT_SYMBOL_GPL(rc_repeat); |
6660de56 MCC |
713 | |
714 | /** | |
62c65031 | 715 | * ir_do_keydown() - internal function to process a keypress |
d8b4b582 | 716 | * @dev: the struct rc_dev descriptor of the device |
120703f9 | 717 | * @protocol: the protocol of the keypress |
62c65031 DH |
718 | * @scancode: the scancode of the keypress |
719 | * @keycode: the keycode of the keypress | |
720 | * @toggle: the toggle value of the keypress | |
6660de56 | 721 | * |
62c65031 DH |
722 | * This function is used internally to register a keypress, it must be |
723 | * called with keylock held. | |
6660de56 | 724 | */ |
6d741bfe | 725 | static void ir_do_keydown(struct rc_dev *dev, enum rc_proto protocol, |
120703f9 | 726 | u32 scancode, u32 keycode, u8 toggle) |
6660de56 | 727 | { |
99b0f3c9 | 728 | bool new_event = (!dev->keypressed || |
120703f9 | 729 | dev->last_protocol != protocol || |
99b0f3c9 | 730 | dev->last_scancode != scancode || |
120703f9 | 731 | dev->last_toggle != toggle); |
de142c32 SY |
732 | struct lirc_scancode sc = { |
733 | .scancode = scancode, .rc_proto = protocol, | |
734 | .flags = toggle ? LIRC_SCANCODE_FLAG_TOGGLE : 0, | |
735 | .keycode = keycode | |
736 | }; | |
737 | ||
738 | ir_lirc_scancode_event(dev, &sc); | |
6660de56 | 739 | |
98c32bcd JW |
740 | if (new_event && dev->keypressed) |
741 | ir_do_keyup(dev, false); | |
6660de56 | 742 | |
98c32bcd | 743 | input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode); |
a374fef4 | 744 | |
b66218fd SY |
745 | dev->last_protocol = protocol; |
746 | dev->last_scancode = scancode; | |
747 | dev->last_toggle = toggle; | |
748 | dev->last_keycode = keycode; | |
749 | ||
98c32bcd JW |
750 | if (new_event && keycode != KEY_RESERVED) { |
751 | /* Register a keypress */ | |
752 | dev->keypressed = true; | |
98c32bcd | 753 | |
1f17f684 SY |
754 | dev_dbg(&dev->dev, "%s: key down event, key 0x%04x, protocol 0x%04x, scancode 0x%08x\n", |
755 | dev->device_name, keycode, protocol, scancode); | |
98c32bcd | 756 | input_report_key(dev->input_dev, keycode, 1); |
70a2f912 JH |
757 | |
758 | led_trigger_event(led_feedback, LED_FULL); | |
98c32bcd | 759 | } |
ed4d3876 | 760 | |
57c642cb SY |
761 | /* |
762 | * For CEC, start sending repeat messages as soon as the first | |
763 | * repeated message is sent, as long as REP_DELAY = 0 and REP_PERIOD | |
764 | * is non-zero. Otherwise, the input layer will generate repeat | |
765 | * messages. | |
766 | */ | |
767 | if (!new_event && keycode != KEY_RESERVED && | |
768 | dev->allowed_protocols == RC_PROTO_BIT_CEC && | |
769 | !timer_pending(&dev->timer_repeat) && | |
770 | dev->input_dev->rep[REP_PERIOD] && | |
771 | !dev->input_dev->rep[REP_DELAY]) { | |
772 | input_event(dev->input_dev, EV_KEY, keycode, 2); | |
773 | mod_timer(&dev->timer_repeat, jiffies + | |
774 | msecs_to_jiffies(dev->input_dev->rep[REP_PERIOD])); | |
775 | } | |
776 | ||
d8b4b582 | 777 | input_sync(dev->input_dev); |
62c65031 | 778 | } |
6660de56 | 779 | |
62c65031 | 780 | /** |
ca86674b | 781 | * rc_keydown() - generates input event for a key press |
d8b4b582 | 782 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
783 | * @protocol: the protocol for the keypress |
784 | * @scancode: the scancode for the keypress | |
62c65031 DH |
785 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
786 | * support toggle values, this should be set to zero) | |
787 | * | |
d8b4b582 DH |
788 | * This routine is used to signal that a key has been pressed on the |
789 | * remote control. | |
62c65031 | 790 | */ |
6d741bfe SY |
791 | void rc_keydown(struct rc_dev *dev, enum rc_proto protocol, u32 scancode, |
792 | u8 toggle) | |
62c65031 DH |
793 | { |
794 | unsigned long flags; | |
ca86674b | 795 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 796 | |
d8b4b582 | 797 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 798 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
62c65031 | 799 | |
d8b4b582 | 800 | if (dev->keypressed) { |
28492256 | 801 | dev->keyup_jiffies = jiffies + nsecs_to_jiffies(dev->timeout) + |
f5dbee6e | 802 | msecs_to_jiffies(repeat_period(protocol)); |
d8b4b582 | 803 | mod_timer(&dev->timer_keyup, dev->keyup_jiffies); |
62c65031 | 804 | } |
d8b4b582 | 805 | spin_unlock_irqrestore(&dev->keylock, flags); |
6660de56 | 806 | } |
ca86674b | 807 | EXPORT_SYMBOL_GPL(rc_keydown); |
6660de56 | 808 | |
62c65031 | 809 | /** |
ca86674b | 810 | * rc_keydown_notimeout() - generates input event for a key press without |
62c65031 | 811 | * an automatic keyup event at a later time |
d8b4b582 | 812 | * @dev: the struct rc_dev descriptor of the device |
120703f9 DH |
813 | * @protocol: the protocol for the keypress |
814 | * @scancode: the scancode for the keypress | |
62c65031 DH |
815 | * @toggle: the toggle value (protocol dependent, if the protocol doesn't |
816 | * support toggle values, this should be set to zero) | |
817 | * | |
d8b4b582 | 818 | * This routine is used to signal that a key has been pressed on the |
ca86674b | 819 | * remote control. The driver must manually call rc_keyup() at a later stage. |
62c65031 | 820 | */ |
6d741bfe | 821 | void rc_keydown_notimeout(struct rc_dev *dev, enum rc_proto protocol, |
120703f9 | 822 | u32 scancode, u8 toggle) |
62c65031 DH |
823 | { |
824 | unsigned long flags; | |
ca86674b | 825 | u32 keycode = rc_g_keycode_from_table(dev, scancode); |
62c65031 | 826 | |
d8b4b582 | 827 | spin_lock_irqsave(&dev->keylock, flags); |
120703f9 | 828 | ir_do_keydown(dev, protocol, scancode, keycode, toggle); |
d8b4b582 | 829 | spin_unlock_irqrestore(&dev->keylock, flags); |
62c65031 | 830 | } |
ca86674b | 831 | EXPORT_SYMBOL_GPL(rc_keydown_notimeout); |
62c65031 | 832 | |
49a4b36a | 833 | /** |
6b514c4a SY |
834 | * rc_validate_scancode() - checks that a scancode is valid for a protocol. |
835 | * For nec, it should do the opposite of ir_nec_bytes_to_scancode() | |
49a4b36a SY |
836 | * @proto: protocol |
837 | * @scancode: scancode | |
838 | */ | |
839 | bool rc_validate_scancode(enum rc_proto proto, u32 scancode) | |
840 | { | |
841 | switch (proto) { | |
6b514c4a SY |
842 | /* |
843 | * NECX has a 16-bit address; if the lower 8 bits match the upper | |
844 | * 8 bits inverted, then the address would match regular nec. | |
845 | */ | |
49a4b36a SY |
846 | case RC_PROTO_NECX: |
847 | if ((((scancode >> 16) ^ ~(scancode >> 8)) & 0xff) == 0) | |
848 | return false; | |
849 | break; | |
6b514c4a SY |
850 | /* |
851 | * NEC32 has a 16 bit address and 16 bit command. If the lower 8 bits | |
852 | * of the command match the upper 8 bits inverted, then it would | |
853 | * be either NEC or NECX. | |
854 | */ | |
49a4b36a | 855 | case RC_PROTO_NEC32: |
6b514c4a | 856 | if ((((scancode >> 8) ^ ~scancode) & 0xff) == 0) |
49a4b36a SY |
857 | return false; |
858 | break; | |
6b514c4a SY |
859 | /* |
860 | * If the customer code (top 32-bit) is 0x800f, it is MCE else it | |
861 | * is regular mode-6a 32 bit | |
862 | */ | |
49a4b36a SY |
863 | case RC_PROTO_RC6_MCE: |
864 | if ((scancode & 0xffff0000) != 0x800f0000) | |
865 | return false; | |
866 | break; | |
867 | case RC_PROTO_RC6_6A_32: | |
868 | if ((scancode & 0xffff0000) == 0x800f0000) | |
869 | return false; | |
870 | break; | |
871 | default: | |
872 | break; | |
873 | } | |
874 | ||
875 | return true; | |
876 | } | |
877 | ||
b590c0bf SY |
878 | /** |
879 | * rc_validate_filter() - checks that the scancode and mask are valid and | |
880 | * provides sensible defaults | |
f423ccc1 | 881 | * @dev: the struct rc_dev descriptor of the device |
b590c0bf | 882 | * @filter: the scancode and mask |
f67f366c MCC |
883 | * |
884 | * return: 0 or -EINVAL if the filter is not valid | |
b590c0bf | 885 | */ |
f423ccc1 | 886 | static int rc_validate_filter(struct rc_dev *dev, |
b590c0bf SY |
887 | struct rc_scancode_filter *filter) |
888 | { | |
d57ea877 | 889 | u32 mask, s = filter->data; |
6d741bfe | 890 | enum rc_proto protocol = dev->wakeup_protocol; |
b590c0bf | 891 | |
d57ea877 | 892 | if (protocol >= ARRAY_SIZE(protocols)) |
2168b416 SY |
893 | return -EINVAL; |
894 | ||
d57ea877 SY |
895 | mask = protocols[protocol].scancode_bits; |
896 | ||
49a4b36a SY |
897 | if (!rc_validate_scancode(protocol, s)) |
898 | return -EINVAL; | |
b590c0bf | 899 | |
d57ea877 SY |
900 | filter->data &= mask; |
901 | filter->mask &= mask; | |
b590c0bf | 902 | |
f423ccc1 JH |
903 | /* |
904 | * If we have to raw encode the IR for wakeup, we cannot have a mask | |
905 | */ | |
d57ea877 | 906 | if (dev->encode_wakeup && filter->mask != 0 && filter->mask != mask) |
f423ccc1 JH |
907 | return -EINVAL; |
908 | ||
b590c0bf SY |
909 | return 0; |
910 | } | |
911 | ||
8b2ff320 SK |
912 | int rc_open(struct rc_dev *rdev) |
913 | { | |
914 | int rval = 0; | |
915 | ||
916 | if (!rdev) | |
917 | return -EINVAL; | |
918 | ||
919 | mutex_lock(&rdev->lock); | |
c73bbaa4 | 920 | |
cb84343f SY |
921 | if (!rdev->registered) { |
922 | rval = -ENODEV; | |
923 | } else { | |
924 | if (!rdev->users++ && rdev->open) | |
925 | rval = rdev->open(rdev); | |
8b2ff320 | 926 | |
cb84343f SY |
927 | if (rval) |
928 | rdev->users--; | |
929 | } | |
8b2ff320 SK |
930 | |
931 | mutex_unlock(&rdev->lock); | |
932 | ||
933 | return rval; | |
934 | } | |
8b2ff320 | 935 | |
d8b4b582 | 936 | static int ir_open(struct input_dev *idev) |
ef53a115 | 937 | { |
d8b4b582 | 938 | struct rc_dev *rdev = input_get_drvdata(idev); |
75543cce | 939 | |
8b2ff320 SK |
940 | return rc_open(rdev); |
941 | } | |
942 | ||
943 | void rc_close(struct rc_dev *rdev) | |
944 | { | |
945 | if (rdev) { | |
946 | mutex_lock(&rdev->lock); | |
947 | ||
cb84343f | 948 | if (!--rdev->users && rdev->close && rdev->registered) |
8b2ff320 SK |
949 | rdev->close(rdev); |
950 | ||
951 | mutex_unlock(&rdev->lock); | |
952 | } | |
ef53a115 | 953 | } |
d4b778d3 | 954 | |
d8b4b582 | 955 | static void ir_close(struct input_dev *idev) |
f6fc5049 | 956 | { |
d8b4b582 | 957 | struct rc_dev *rdev = input_get_drvdata(idev); |
8b2ff320 | 958 | rc_close(rdev); |
f6fc5049 | 959 | } |
f6fc5049 | 960 | |
bc2a6c57 | 961 | /* class for /sys/class/rc */ |
40fc5325 | 962 | static char *rc_devnode(struct device *dev, umode_t *mode) |
bc2a6c57 MCC |
963 | { |
964 | return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); | |
965 | } | |
966 | ||
40fc5325 | 967 | static struct class rc_class = { |
bc2a6c57 | 968 | .name = "rc", |
40fc5325 | 969 | .devnode = rc_devnode, |
bc2a6c57 MCC |
970 | }; |
971 | ||
c003ab1b DH |
972 | /* |
973 | * These are the protocol textual descriptions that are | |
974 | * used by the sysfs protocols file. Note that the order | |
975 | * of the entries is relevant. | |
976 | */ | |
53df8777 | 977 | static const struct { |
bc2a6c57 | 978 | u64 type; |
53df8777 | 979 | const char *name; |
9f0bf366 | 980 | const char *module_name; |
bc2a6c57 | 981 | } proto_names[] = { |
6d741bfe SY |
982 | { RC_PROTO_BIT_NONE, "none", NULL }, |
983 | { RC_PROTO_BIT_OTHER, "other", NULL }, | |
984 | { RC_PROTO_BIT_UNKNOWN, "unknown", NULL }, | |
985 | { RC_PROTO_BIT_RC5 | | |
986 | RC_PROTO_BIT_RC5X_20, "rc-5", "ir-rc5-decoder" }, | |
987 | { RC_PROTO_BIT_NEC | | |
988 | RC_PROTO_BIT_NECX | | |
989 | RC_PROTO_BIT_NEC32, "nec", "ir-nec-decoder" }, | |
990 | { RC_PROTO_BIT_RC6_0 | | |
991 | RC_PROTO_BIT_RC6_6A_20 | | |
992 | RC_PROTO_BIT_RC6_6A_24 | | |
993 | RC_PROTO_BIT_RC6_6A_32 | | |
994 | RC_PROTO_BIT_RC6_MCE, "rc-6", "ir-rc6-decoder" }, | |
995 | { RC_PROTO_BIT_JVC, "jvc", "ir-jvc-decoder" }, | |
996 | { RC_PROTO_BIT_SONY12 | | |
997 | RC_PROTO_BIT_SONY15 | | |
998 | RC_PROTO_BIT_SONY20, "sony", "ir-sony-decoder" }, | |
999 | { RC_PROTO_BIT_RC5_SZ, "rc-5-sz", "ir-rc5-decoder" }, | |
1000 | { RC_PROTO_BIT_SANYO, "sanyo", "ir-sanyo-decoder" }, | |
1001 | { RC_PROTO_BIT_SHARP, "sharp", "ir-sharp-decoder" }, | |
1002 | { RC_PROTO_BIT_MCIR2_KBD | | |
1003 | RC_PROTO_BIT_MCIR2_MSE, "mce_kbd", "ir-mce_kbd-decoder" }, | |
1004 | { RC_PROTO_BIT_XMP, "xmp", "ir-xmp-decoder" }, | |
1005 | { RC_PROTO_BIT_CEC, "cec", NULL }, | |
447dcc0c | 1006 | { RC_PROTO_BIT_IMON, "imon", "ir-imon-decoder" }, |
bc2a6c57 MCC |
1007 | }; |
1008 | ||
bc2a6c57 | 1009 | /** |
ab88c66d JH |
1010 | * struct rc_filter_attribute - Device attribute relating to a filter type. |
1011 | * @attr: Device attribute. | |
1012 | * @type: Filter type. | |
1013 | * @mask: false for filter value, true for filter mask. | |
1014 | */ | |
1015 | struct rc_filter_attribute { | |
1016 | struct device_attribute attr; | |
1017 | enum rc_filter_type type; | |
1018 | bool mask; | |
1019 | }; | |
1020 | #define to_rc_filter_attr(a) container_of(a, struct rc_filter_attribute, attr) | |
1021 | ||
ab88c66d JH |
1022 | #define RC_FILTER_ATTR(_name, _mode, _show, _store, _type, _mask) \ |
1023 | struct rc_filter_attribute dev_attr_##_name = { \ | |
1024 | .attr = __ATTR(_name, _mode, _show, _store), \ | |
1025 | .type = (_type), \ | |
1026 | .mask = (_mask), \ | |
1027 | } | |
1028 | ||
1029 | /** | |
0751d33c | 1030 | * show_protocols() - shows the current IR protocol(s) |
d8b4b582 | 1031 | * @device: the device descriptor |
da6e162d | 1032 | * @mattr: the device attribute struct |
bc2a6c57 MCC |
1033 | * @buf: a pointer to the output buffer |
1034 | * | |
1035 | * This routine is a callback routine for input read the IR protocol type(s). | |
0751d33c | 1036 | * it is trigged by reading /sys/class/rc/rc?/protocols. |
bc2a6c57 MCC |
1037 | * It returns the protocol names of supported protocols. |
1038 | * Enabled protocols are printed in brackets. | |
08aeb7c9 | 1039 | * |
18726a34 DH |
1040 | * dev->lock is taken to guard against races between |
1041 | * store_protocols and show_protocols. | |
bc2a6c57 | 1042 | */ |
d8b4b582 | 1043 | static ssize_t show_protocols(struct device *device, |
bc2a6c57 MCC |
1044 | struct device_attribute *mattr, char *buf) |
1045 | { | |
d8b4b582 | 1046 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 MCC |
1047 | u64 allowed, enabled; |
1048 | char *tmp = buf; | |
1049 | int i; | |
1050 | ||
08aeb7c9 JW |
1051 | mutex_lock(&dev->lock); |
1052 | ||
0751d33c SY |
1053 | enabled = dev->enabled_protocols; |
1054 | allowed = dev->allowed_protocols; | |
1055 | if (dev->raw && !allowed) | |
1056 | allowed = ir_raw_get_allowed_protocols(); | |
bc2a6c57 | 1057 | |
da6e162d DH |
1058 | mutex_unlock(&dev->lock); |
1059 | ||
1f17f684 SY |
1060 | dev_dbg(&dev->dev, "%s: allowed - 0x%llx, enabled - 0x%llx\n", |
1061 | __func__, (long long)allowed, (long long)enabled); | |
bc2a6c57 MCC |
1062 | |
1063 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
1064 | if (allowed & enabled & proto_names[i].type) | |
1065 | tmp += sprintf(tmp, "[%s] ", proto_names[i].name); | |
1066 | else if (allowed & proto_names[i].type) | |
1067 | tmp += sprintf(tmp, "%s ", proto_names[i].name); | |
c003ab1b DH |
1068 | |
1069 | if (allowed & proto_names[i].type) | |
1070 | allowed &= ~proto_names[i].type; | |
bc2a6c57 MCC |
1071 | } |
1072 | ||
a60d64b1 SY |
1073 | #ifdef CONFIG_LIRC |
1074 | if (dev->driver_type == RC_DRIVER_IR_RAW) | |
275ddb40 | 1075 | tmp += sprintf(tmp, "[lirc] "); |
a60d64b1 | 1076 | #endif |
275ddb40 | 1077 | |
bc2a6c57 MCC |
1078 | if (tmp != buf) |
1079 | tmp--; | |
1080 | *tmp = '\n'; | |
08aeb7c9 | 1081 | |
bc2a6c57 MCC |
1082 | return tmp + 1 - buf; |
1083 | } | |
1084 | ||
1085 | /** | |
da6e162d | 1086 | * parse_protocol_change() - parses a protocol change request |
1f17f684 | 1087 | * @dev: rc_dev device |
da6e162d DH |
1088 | * @protocols: pointer to the bitmask of current protocols |
1089 | * @buf: pointer to the buffer with a list of changes | |
bc2a6c57 | 1090 | * |
da6e162d DH |
1091 | * Writing "+proto" will add a protocol to the protocol mask. |
1092 | * Writing "-proto" will remove a protocol from protocol mask. | |
bc2a6c57 MCC |
1093 | * Writing "proto" will enable only "proto". |
1094 | * Writing "none" will disable all protocols. | |
da6e162d | 1095 | * Returns the number of changes performed or a negative error code. |
bc2a6c57 | 1096 | */ |
1f17f684 SY |
1097 | static int parse_protocol_change(struct rc_dev *dev, u64 *protocols, |
1098 | const char *buf) | |
bc2a6c57 | 1099 | { |
bc2a6c57 | 1100 | const char *tmp; |
da6e162d DH |
1101 | unsigned count = 0; |
1102 | bool enable, disable; | |
bc2a6c57 | 1103 | u64 mask; |
da6e162d | 1104 | int i; |
bc2a6c57 | 1105 | |
da6e162d | 1106 | while ((tmp = strsep((char **)&buf, " \n")) != NULL) { |
bc2a6c57 MCC |
1107 | if (!*tmp) |
1108 | break; | |
1109 | ||
1110 | if (*tmp == '+') { | |
1111 | enable = true; | |
1112 | disable = false; | |
1113 | tmp++; | |
1114 | } else if (*tmp == '-') { | |
1115 | enable = false; | |
1116 | disable = true; | |
1117 | tmp++; | |
1118 | } else { | |
1119 | enable = false; | |
1120 | disable = false; | |
1121 | } | |
1122 | ||
c003ab1b DH |
1123 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { |
1124 | if (!strcasecmp(tmp, proto_names[i].name)) { | |
1125 | mask = proto_names[i].type; | |
1126 | break; | |
bc2a6c57 | 1127 | } |
bc2a6c57 MCC |
1128 | } |
1129 | ||
c003ab1b | 1130 | if (i == ARRAY_SIZE(proto_names)) { |
275ddb40 DH |
1131 | if (!strcasecmp(tmp, "lirc")) |
1132 | mask = 0; | |
1133 | else { | |
1f17f684 SY |
1134 | dev_dbg(&dev->dev, "Unknown protocol: '%s'\n", |
1135 | tmp); | |
275ddb40 DH |
1136 | return -EINVAL; |
1137 | } | |
c003ab1b DH |
1138 | } |
1139 | ||
1140 | count++; | |
1141 | ||
bc2a6c57 | 1142 | if (enable) |
da6e162d | 1143 | *protocols |= mask; |
bc2a6c57 | 1144 | else if (disable) |
da6e162d | 1145 | *protocols &= ~mask; |
bc2a6c57 | 1146 | else |
da6e162d | 1147 | *protocols = mask; |
bc2a6c57 MCC |
1148 | } |
1149 | ||
1150 | if (!count) { | |
1f17f684 | 1151 | dev_dbg(&dev->dev, "Protocol not specified\n"); |
da6e162d DH |
1152 | return -EINVAL; |
1153 | } | |
1154 | ||
1155 | return count; | |
1156 | } | |
1157 | ||
0d39ab0b | 1158 | void ir_raw_load_modules(u64 *protocols) |
9f0bf366 HK |
1159 | { |
1160 | u64 available; | |
1161 | int i, ret; | |
1162 | ||
1163 | for (i = 0; i < ARRAY_SIZE(proto_names); i++) { | |
6d741bfe SY |
1164 | if (proto_names[i].type == RC_PROTO_BIT_NONE || |
1165 | proto_names[i].type & (RC_PROTO_BIT_OTHER | | |
1166 | RC_PROTO_BIT_UNKNOWN)) | |
9f0bf366 HK |
1167 | continue; |
1168 | ||
1169 | available = ir_raw_get_allowed_protocols(); | |
1170 | if (!(*protocols & proto_names[i].type & ~available)) | |
1171 | continue; | |
1172 | ||
1173 | if (!proto_names[i].module_name) { | |
1174 | pr_err("Can't enable IR protocol %s\n", | |
1175 | proto_names[i].name); | |
1176 | *protocols &= ~proto_names[i].type; | |
1177 | continue; | |
1178 | } | |
1179 | ||
1180 | ret = request_module("%s", proto_names[i].module_name); | |
1181 | if (ret < 0) { | |
1182 | pr_err("Couldn't load IR protocol module %s\n", | |
1183 | proto_names[i].module_name); | |
1184 | *protocols &= ~proto_names[i].type; | |
1185 | continue; | |
1186 | } | |
1187 | msleep(20); | |
1188 | available = ir_raw_get_allowed_protocols(); | |
1189 | if (!(*protocols & proto_names[i].type & ~available)) | |
1190 | continue; | |
1191 | ||
8caebcdc | 1192 | pr_err("Loaded IR protocol module %s, but protocol %s still not available\n", |
9f0bf366 HK |
1193 | proto_names[i].module_name, |
1194 | proto_names[i].name); | |
1195 | *protocols &= ~proto_names[i].type; | |
1196 | } | |
1197 | } | |
1198 | ||
da6e162d DH |
1199 | /** |
1200 | * store_protocols() - changes the current/wakeup IR protocol(s) | |
1201 | * @device: the device descriptor | |
1202 | * @mattr: the device attribute struct | |
1203 | * @buf: a pointer to the input buffer | |
1204 | * @len: length of the input buffer | |
1205 | * | |
1206 | * This routine is for changing the IR protocol type. | |
1207 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]protocols. | |
1208 | * See parse_protocol_change() for the valid commands. | |
1209 | * Returns @len on success or a negative error code. | |
1210 | * | |
18726a34 DH |
1211 | * dev->lock is taken to guard against races between |
1212 | * store_protocols and show_protocols. | |
da6e162d DH |
1213 | */ |
1214 | static ssize_t store_protocols(struct device *device, | |
1215 | struct device_attribute *mattr, | |
1216 | const char *buf, size_t len) | |
1217 | { | |
1218 | struct rc_dev *dev = to_rc_dev(device); | |
da6e162d | 1219 | u64 *current_protocols; |
da6e162d | 1220 | struct rc_scancode_filter *filter; |
da6e162d DH |
1221 | u64 old_protocols, new_protocols; |
1222 | ssize_t rc; | |
1223 | ||
1f17f684 | 1224 | dev_dbg(&dev->dev, "Normal protocol change requested\n"); |
0751d33c SY |
1225 | current_protocols = &dev->enabled_protocols; |
1226 | filter = &dev->scancode_filter; | |
da6e162d | 1227 | |
0751d33c | 1228 | if (!dev->change_protocol) { |
1f17f684 | 1229 | dev_dbg(&dev->dev, "Protocol switching not supported\n"); |
da6e162d DH |
1230 | return -EINVAL; |
1231 | } | |
1232 | ||
1233 | mutex_lock(&dev->lock); | |
1234 | ||
1235 | old_protocols = *current_protocols; | |
1236 | new_protocols = old_protocols; | |
1f17f684 | 1237 | rc = parse_protocol_change(dev, &new_protocols, buf); |
da6e162d DH |
1238 | if (rc < 0) |
1239 | goto out; | |
1240 | ||
a86d6df8 SY |
1241 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1242 | ir_raw_load_modules(&new_protocols); | |
1243 | ||
0751d33c | 1244 | rc = dev->change_protocol(dev, &new_protocols); |
da6e162d | 1245 | if (rc < 0) { |
1f17f684 SY |
1246 | dev_dbg(&dev->dev, "Error setting protocols to 0x%llx\n", |
1247 | (long long)new_protocols); | |
08aeb7c9 | 1248 | goto out; |
bc2a6c57 MCC |
1249 | } |
1250 | ||
983c5bd2 JH |
1251 | if (new_protocols != old_protocols) { |
1252 | *current_protocols = new_protocols; | |
1f17f684 SY |
1253 | dev_dbg(&dev->dev, "Protocols changed to 0x%llx\n", |
1254 | (long long)new_protocols); | |
bc2a6c57 MCC |
1255 | } |
1256 | ||
6bea25af | 1257 | /* |
983c5bd2 JH |
1258 | * If a protocol change was attempted the filter may need updating, even |
1259 | * if the actual protocol mask hasn't changed (since the driver may have | |
1260 | * cleared the filter). | |
6bea25af JH |
1261 | * Try setting the same filter with the new protocol (if any). |
1262 | * Fall back to clearing the filter. | |
1263 | */ | |
0751d33c | 1264 | if (dev->s_filter && filter->mask) { |
da6e162d | 1265 | if (new_protocols) |
0751d33c | 1266 | rc = dev->s_filter(dev, filter); |
da6e162d DH |
1267 | else |
1268 | rc = -1; | |
6bea25af | 1269 | |
da6e162d DH |
1270 | if (rc < 0) { |
1271 | filter->data = 0; | |
1272 | filter->mask = 0; | |
0751d33c | 1273 | dev->s_filter(dev, filter); |
da6e162d | 1274 | } |
6bea25af JH |
1275 | } |
1276 | ||
da6e162d | 1277 | rc = len; |
08aeb7c9 JW |
1278 | |
1279 | out: | |
1280 | mutex_unlock(&dev->lock); | |
da6e162d | 1281 | return rc; |
bc2a6c57 MCC |
1282 | } |
1283 | ||
00942d1a JH |
1284 | /** |
1285 | * show_filter() - shows the current scancode filter value or mask | |
1286 | * @device: the device descriptor | |
1287 | * @attr: the device attribute struct | |
1288 | * @buf: a pointer to the output buffer | |
1289 | * | |
1290 | * This routine is a callback routine to read a scancode filter value or mask. | |
1291 | * It is trigged by reading /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1292 | * It prints the current scancode filter value or mask of the appropriate filter | |
1293 | * type in hexadecimal into @buf and returns the size of the buffer. | |
1294 | * | |
1295 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1296 | * compared against input scancodes and non-matching scancodes are discarded. | |
1297 | * | |
18726a34 | 1298 | * dev->lock is taken to guard against races between |
00942d1a JH |
1299 | * store_filter and show_filter. |
1300 | */ | |
1301 | static ssize_t show_filter(struct device *device, | |
1302 | struct device_attribute *attr, | |
1303 | char *buf) | |
1304 | { | |
1305 | struct rc_dev *dev = to_rc_dev(device); | |
1306 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1307 | struct rc_scancode_filter *filter; |
00942d1a JH |
1308 | u32 val; |
1309 | ||
c73bbaa4 | 1310 | mutex_lock(&dev->lock); |
c73bbaa4 | 1311 | |
da6e162d | 1312 | if (fattr->type == RC_FILTER_NORMAL) |
c5540fbb | 1313 | filter = &dev->scancode_filter; |
da6e162d | 1314 | else |
c5540fbb | 1315 | filter = &dev->scancode_wakeup_filter; |
da6e162d | 1316 | |
da6e162d DH |
1317 | if (fattr->mask) |
1318 | val = filter->mask; | |
00942d1a | 1319 | else |
da6e162d | 1320 | val = filter->data; |
00942d1a JH |
1321 | mutex_unlock(&dev->lock); |
1322 | ||
1323 | return sprintf(buf, "%#x\n", val); | |
1324 | } | |
1325 | ||
1326 | /** | |
1327 | * store_filter() - changes the scancode filter value | |
1328 | * @device: the device descriptor | |
1329 | * @attr: the device attribute struct | |
1330 | * @buf: a pointer to the input buffer | |
1331 | * @len: length of the input buffer | |
1332 | * | |
1333 | * This routine is for changing a scancode filter value or mask. | |
1334 | * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]filter[_mask]. | |
1335 | * Returns -EINVAL if an invalid filter value for the current protocol was | |
1336 | * specified or if scancode filtering is not supported by the driver, otherwise | |
1337 | * returns @len. | |
1338 | * | |
1339 | * Bits of the filter value corresponding to set bits in the filter mask are | |
1340 | * compared against input scancodes and non-matching scancodes are discarded. | |
1341 | * | |
18726a34 | 1342 | * dev->lock is taken to guard against races between |
00942d1a JH |
1343 | * store_filter and show_filter. |
1344 | */ | |
1345 | static ssize_t store_filter(struct device *device, | |
1346 | struct device_attribute *attr, | |
da6e162d | 1347 | const char *buf, size_t len) |
00942d1a JH |
1348 | { |
1349 | struct rc_dev *dev = to_rc_dev(device); | |
1350 | struct rc_filter_attribute *fattr = to_rc_filter_attr(attr); | |
da6e162d | 1351 | struct rc_scancode_filter new_filter, *filter; |
00942d1a JH |
1352 | int ret; |
1353 | unsigned long val; | |
23c843b5 | 1354 | int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter); |
00942d1a | 1355 | |
00942d1a JH |
1356 | ret = kstrtoul(buf, 0, &val); |
1357 | if (ret < 0) | |
1358 | return ret; | |
1359 | ||
da6e162d DH |
1360 | if (fattr->type == RC_FILTER_NORMAL) { |
1361 | set_filter = dev->s_filter; | |
c5540fbb | 1362 | filter = &dev->scancode_filter; |
da6e162d DH |
1363 | } else { |
1364 | set_filter = dev->s_wakeup_filter; | |
c5540fbb | 1365 | filter = &dev->scancode_wakeup_filter; |
da6e162d DH |
1366 | } |
1367 | ||
99b0f3c9 DH |
1368 | if (!set_filter) |
1369 | return -EINVAL; | |
00942d1a JH |
1370 | |
1371 | mutex_lock(&dev->lock); | |
1372 | ||
da6e162d | 1373 | new_filter = *filter; |
00942d1a | 1374 | if (fattr->mask) |
da6e162d | 1375 | new_filter.mask = val; |
00942d1a | 1376 | else |
da6e162d | 1377 | new_filter.data = val; |
23c843b5 | 1378 | |
0751d33c | 1379 | if (fattr->type == RC_FILTER_WAKEUP) { |
b590c0bf SY |
1380 | /* |
1381 | * Refuse to set a filter unless a protocol is enabled | |
1382 | * and the filter is valid for that protocol | |
1383 | */ | |
6d741bfe | 1384 | if (dev->wakeup_protocol != RC_PROTO_UNKNOWN) |
f423ccc1 | 1385 | ret = rc_validate_filter(dev, &new_filter); |
b590c0bf | 1386 | else |
0751d33c | 1387 | ret = -EINVAL; |
b590c0bf SY |
1388 | |
1389 | if (ret != 0) | |
0751d33c | 1390 | goto unlock; |
0751d33c SY |
1391 | } |
1392 | ||
1393 | if (fattr->type == RC_FILTER_NORMAL && !dev->enabled_protocols && | |
1394 | val) { | |
6bea25af JH |
1395 | /* refuse to set a filter unless a protocol is enabled */ |
1396 | ret = -EINVAL; | |
1397 | goto unlock; | |
1398 | } | |
23c843b5 | 1399 | |
da6e162d | 1400 | ret = set_filter(dev, &new_filter); |
99b0f3c9 DH |
1401 | if (ret < 0) |
1402 | goto unlock; | |
00942d1a | 1403 | |
da6e162d | 1404 | *filter = new_filter; |
00942d1a JH |
1405 | |
1406 | unlock: | |
1407 | mutex_unlock(&dev->lock); | |
da6e162d | 1408 | return (ret < 0) ? ret : len; |
00942d1a JH |
1409 | } |
1410 | ||
0751d33c SY |
1411 | /** |
1412 | * show_wakeup_protocols() - shows the wakeup IR protocol | |
1413 | * @device: the device descriptor | |
1414 | * @mattr: the device attribute struct | |
1415 | * @buf: a pointer to the output buffer | |
1416 | * | |
1417 | * This routine is a callback routine for input read the IR protocol type(s). | |
1418 | * it is trigged by reading /sys/class/rc/rc?/wakeup_protocols. | |
1419 | * It returns the protocol names of supported protocols. | |
1420 | * The enabled protocols are printed in brackets. | |
1421 | * | |
18726a34 DH |
1422 | * dev->lock is taken to guard against races between |
1423 | * store_wakeup_protocols and show_wakeup_protocols. | |
0751d33c SY |
1424 | */ |
1425 | static ssize_t show_wakeup_protocols(struct device *device, | |
1426 | struct device_attribute *mattr, | |
1427 | char *buf) | |
1428 | { | |
1429 | struct rc_dev *dev = to_rc_dev(device); | |
1430 | u64 allowed; | |
6d741bfe | 1431 | enum rc_proto enabled; |
0751d33c SY |
1432 | char *tmp = buf; |
1433 | int i; | |
1434 | ||
0751d33c SY |
1435 | mutex_lock(&dev->lock); |
1436 | ||
1437 | allowed = dev->allowed_wakeup_protocols; | |
1438 | enabled = dev->wakeup_protocol; | |
1439 | ||
1440 | mutex_unlock(&dev->lock); | |
1441 | ||
1f17f684 SY |
1442 | dev_dbg(&dev->dev, "%s: allowed - 0x%llx, enabled - %d\n", |
1443 | __func__, (long long)allowed, enabled); | |
0751d33c | 1444 | |
d57ea877 | 1445 | for (i = 0; i < ARRAY_SIZE(protocols); i++) { |
0751d33c SY |
1446 | if (allowed & (1ULL << i)) { |
1447 | if (i == enabled) | |
d57ea877 | 1448 | tmp += sprintf(tmp, "[%s] ", protocols[i].name); |
0751d33c | 1449 | else |
d57ea877 | 1450 | tmp += sprintf(tmp, "%s ", protocols[i].name); |
0751d33c SY |
1451 | } |
1452 | } | |
1453 | ||
1454 | if (tmp != buf) | |
1455 | tmp--; | |
1456 | *tmp = '\n'; | |
1457 | ||
1458 | return tmp + 1 - buf; | |
1459 | } | |
1460 | ||
1461 | /** | |
1462 | * store_wakeup_protocols() - changes the wakeup IR protocol(s) | |
1463 | * @device: the device descriptor | |
1464 | * @mattr: the device attribute struct | |
1465 | * @buf: a pointer to the input buffer | |
1466 | * @len: length of the input buffer | |
1467 | * | |
1468 | * This routine is for changing the IR protocol type. | |
1469 | * It is trigged by writing to /sys/class/rc/rc?/wakeup_protocols. | |
1470 | * Returns @len on success or a negative error code. | |
1471 | * | |
18726a34 DH |
1472 | * dev->lock is taken to guard against races between |
1473 | * store_wakeup_protocols and show_wakeup_protocols. | |
0751d33c SY |
1474 | */ |
1475 | static ssize_t store_wakeup_protocols(struct device *device, | |
1476 | struct device_attribute *mattr, | |
1477 | const char *buf, size_t len) | |
1478 | { | |
1479 | struct rc_dev *dev = to_rc_dev(device); | |
6d741bfe | 1480 | enum rc_proto protocol; |
0751d33c SY |
1481 | ssize_t rc; |
1482 | u64 allowed; | |
1483 | int i; | |
1484 | ||
0751d33c SY |
1485 | mutex_lock(&dev->lock); |
1486 | ||
1487 | allowed = dev->allowed_wakeup_protocols; | |
1488 | ||
1489 | if (sysfs_streq(buf, "none")) { | |
6d741bfe | 1490 | protocol = RC_PROTO_UNKNOWN; |
0751d33c | 1491 | } else { |
d57ea877 | 1492 | for (i = 0; i < ARRAY_SIZE(protocols); i++) { |
0751d33c | 1493 | if ((allowed & (1ULL << i)) && |
d57ea877 | 1494 | sysfs_streq(buf, protocols[i].name)) { |
0751d33c SY |
1495 | protocol = i; |
1496 | break; | |
1497 | } | |
1498 | } | |
1499 | ||
d57ea877 | 1500 | if (i == ARRAY_SIZE(protocols)) { |
0751d33c SY |
1501 | rc = -EINVAL; |
1502 | goto out; | |
1503 | } | |
f423ccc1 JH |
1504 | |
1505 | if (dev->encode_wakeup) { | |
1506 | u64 mask = 1ULL << protocol; | |
1507 | ||
1508 | ir_raw_load_modules(&mask); | |
1509 | if (!mask) { | |
1510 | rc = -EINVAL; | |
1511 | goto out; | |
1512 | } | |
1513 | } | |
0751d33c SY |
1514 | } |
1515 | ||
1516 | if (dev->wakeup_protocol != protocol) { | |
1517 | dev->wakeup_protocol = protocol; | |
1f17f684 | 1518 | dev_dbg(&dev->dev, "Wakeup protocol changed to %d\n", protocol); |
0751d33c | 1519 | |
6d741bfe | 1520 | if (protocol == RC_PROTO_RC6_MCE) |
0751d33c SY |
1521 | dev->scancode_wakeup_filter.data = 0x800f0000; |
1522 | else | |
1523 | dev->scancode_wakeup_filter.data = 0; | |
1524 | dev->scancode_wakeup_filter.mask = 0; | |
1525 | ||
1526 | rc = dev->s_wakeup_filter(dev, &dev->scancode_wakeup_filter); | |
1527 | if (rc == 0) | |
1528 | rc = len; | |
1529 | } else { | |
1530 | rc = len; | |
1531 | } | |
1532 | ||
1533 | out: | |
1534 | mutex_unlock(&dev->lock); | |
1535 | return rc; | |
1536 | } | |
1537 | ||
d8b4b582 DH |
1538 | static void rc_dev_release(struct device *device) |
1539 | { | |
47cae1e1 MK |
1540 | struct rc_dev *dev = to_rc_dev(device); |
1541 | ||
1542 | kfree(dev); | |
d8b4b582 DH |
1543 | } |
1544 | ||
bc2a6c57 MCC |
1545 | #define ADD_HOTPLUG_VAR(fmt, val...) \ |
1546 | do { \ | |
1547 | int err = add_uevent_var(env, fmt, val); \ | |
1548 | if (err) \ | |
1549 | return err; \ | |
1550 | } while (0) | |
1551 | ||
1552 | static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env) | |
1553 | { | |
d8b4b582 | 1554 | struct rc_dev *dev = to_rc_dev(device); |
bc2a6c57 | 1555 | |
b088ba65 MCC |
1556 | if (dev->rc_map.name) |
1557 | ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name); | |
d8b4b582 DH |
1558 | if (dev->driver_name) |
1559 | ADD_HOTPLUG_VAR("DRV_NAME=%s", dev->driver_name); | |
b9f407e3 SY |
1560 | if (dev->device_name) |
1561 | ADD_HOTPLUG_VAR("DEV_NAME=%s", dev->device_name); | |
bc2a6c57 MCC |
1562 | |
1563 | return 0; | |
1564 | } | |
1565 | ||
1566 | /* | |
1567 | * Static device attribute struct with the sysfs attributes for IR's | |
1568 | */ | |
6d75db30 SY |
1569 | static struct device_attribute dev_attr_ro_protocols = |
1570 | __ATTR(protocols, 0444, show_protocols, NULL); | |
1571 | static struct device_attribute dev_attr_rw_protocols = | |
1572 | __ATTR(protocols, 0644, show_protocols, store_protocols); | |
0751d33c SY |
1573 | static DEVICE_ATTR(wakeup_protocols, 0644, show_wakeup_protocols, |
1574 | store_wakeup_protocols); | |
00942d1a JH |
1575 | static RC_FILTER_ATTR(filter, S_IRUGO|S_IWUSR, |
1576 | show_filter, store_filter, RC_FILTER_NORMAL, false); | |
1577 | static RC_FILTER_ATTR(filter_mask, S_IRUGO|S_IWUSR, | |
1578 | show_filter, store_filter, RC_FILTER_NORMAL, true); | |
1579 | static RC_FILTER_ATTR(wakeup_filter, S_IRUGO|S_IWUSR, | |
1580 | show_filter, store_filter, RC_FILTER_WAKEUP, false); | |
1581 | static RC_FILTER_ATTR(wakeup_filter_mask, S_IRUGO|S_IWUSR, | |
1582 | show_filter, store_filter, RC_FILTER_WAKEUP, true); | |
bc2a6c57 | 1583 | |
6d75db30 SY |
1584 | static struct attribute *rc_dev_rw_protocol_attrs[] = { |
1585 | &dev_attr_rw_protocols.attr, | |
99b0f3c9 DH |
1586 | NULL, |
1587 | }; | |
1588 | ||
6d75db30 SY |
1589 | static const struct attribute_group rc_dev_rw_protocol_attr_grp = { |
1590 | .attrs = rc_dev_rw_protocol_attrs, | |
1591 | }; | |
1592 | ||
1593 | static struct attribute *rc_dev_ro_protocol_attrs[] = { | |
1594 | &dev_attr_ro_protocols.attr, | |
1595 | NULL, | |
1596 | }; | |
1597 | ||
1598 | static const struct attribute_group rc_dev_ro_protocol_attr_grp = { | |
1599 | .attrs = rc_dev_ro_protocol_attrs, | |
99b0f3c9 DH |
1600 | }; |
1601 | ||
99b0f3c9 | 1602 | static struct attribute *rc_dev_filter_attrs[] = { |
00942d1a JH |
1603 | &dev_attr_filter.attr.attr, |
1604 | &dev_attr_filter_mask.attr.attr, | |
bc2a6c57 MCC |
1605 | NULL, |
1606 | }; | |
1607 | ||
db68102c | 1608 | static const struct attribute_group rc_dev_filter_attr_grp = { |
99b0f3c9 | 1609 | .attrs = rc_dev_filter_attrs, |
bc2a6c57 MCC |
1610 | }; |
1611 | ||
99b0f3c9 DH |
1612 | static struct attribute *rc_dev_wakeup_filter_attrs[] = { |
1613 | &dev_attr_wakeup_filter.attr.attr, | |
1614 | &dev_attr_wakeup_filter_mask.attr.attr, | |
0751d33c | 1615 | &dev_attr_wakeup_protocols.attr, |
99b0f3c9 DH |
1616 | NULL, |
1617 | }; | |
1618 | ||
db68102c | 1619 | static const struct attribute_group rc_dev_wakeup_filter_attr_grp = { |
99b0f3c9 | 1620 | .attrs = rc_dev_wakeup_filter_attrs, |
bc2a6c57 MCC |
1621 | }; |
1622 | ||
f03f02f9 | 1623 | static const struct device_type rc_dev_type = { |
d8b4b582 | 1624 | .release = rc_dev_release, |
bc2a6c57 MCC |
1625 | .uevent = rc_dev_uevent, |
1626 | }; | |
1627 | ||
0f7499fd | 1628 | struct rc_dev *rc_allocate_device(enum rc_driver_type type) |
bc2a6c57 | 1629 | { |
d8b4b582 | 1630 | struct rc_dev *dev; |
bc2a6c57 | 1631 | |
d8b4b582 DH |
1632 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
1633 | if (!dev) | |
1634 | return NULL; | |
1635 | ||
d34aee10 AS |
1636 | if (type != RC_DRIVER_IR_RAW_TX) { |
1637 | dev->input_dev = input_allocate_device(); | |
1638 | if (!dev->input_dev) { | |
1639 | kfree(dev); | |
1640 | return NULL; | |
1641 | } | |
1642 | ||
1643 | dev->input_dev->getkeycode = ir_getkeycode; | |
1644 | dev->input_dev->setkeycode = ir_setkeycode; | |
1645 | input_set_drvdata(dev->input_dev, dev); | |
d8b4b582 | 1646 | |
28492256 | 1647 | dev->timeout = IR_DEFAULT_TIMEOUT; |
b17ec78a | 1648 | timer_setup(&dev->timer_keyup, ir_timer_keyup, 0); |
57c642cb | 1649 | timer_setup(&dev->timer_repeat, ir_timer_repeat, 0); |
d8b4b582 | 1650 | |
d34aee10 AS |
1651 | spin_lock_init(&dev->rc_map.lock); |
1652 | spin_lock_init(&dev->keylock); | |
1653 | } | |
08aeb7c9 | 1654 | mutex_init(&dev->lock); |
bc2a6c57 | 1655 | |
d8b4b582 | 1656 | dev->dev.type = &rc_dev_type; |
40fc5325 | 1657 | dev->dev.class = &rc_class; |
d8b4b582 DH |
1658 | device_initialize(&dev->dev); |
1659 | ||
0f7499fd AS |
1660 | dev->driver_type = type; |
1661 | ||
d8b4b582 DH |
1662 | __module_get(THIS_MODULE); |
1663 | return dev; | |
1664 | } | |
1665 | EXPORT_SYMBOL_GPL(rc_allocate_device); | |
1666 | ||
1667 | void rc_free_device(struct rc_dev *dev) | |
bc2a6c57 | 1668 | { |
b05681b9 MCC |
1669 | if (!dev) |
1670 | return; | |
1671 | ||
3dd94f00 | 1672 | input_free_device(dev->input_dev); |
b05681b9 MCC |
1673 | |
1674 | put_device(&dev->dev); | |
1675 | ||
47cae1e1 MK |
1676 | /* kfree(dev) will be called by the callback function |
1677 | rc_dev_release() */ | |
1678 | ||
b05681b9 | 1679 | module_put(THIS_MODULE); |
d8b4b582 DH |
1680 | } |
1681 | EXPORT_SYMBOL_GPL(rc_free_device); | |
1682 | ||
ddbf7d5a HK |
1683 | static void devm_rc_alloc_release(struct device *dev, void *res) |
1684 | { | |
1685 | rc_free_device(*(struct rc_dev **)res); | |
1686 | } | |
1687 | ||
0f7499fd AS |
1688 | struct rc_dev *devm_rc_allocate_device(struct device *dev, |
1689 | enum rc_driver_type type) | |
ddbf7d5a HK |
1690 | { |
1691 | struct rc_dev **dr, *rc; | |
1692 | ||
1693 | dr = devres_alloc(devm_rc_alloc_release, sizeof(*dr), GFP_KERNEL); | |
1694 | if (!dr) | |
1695 | return NULL; | |
1696 | ||
0f7499fd | 1697 | rc = rc_allocate_device(type); |
ddbf7d5a HK |
1698 | if (!rc) { |
1699 | devres_free(dr); | |
1700 | return NULL; | |
1701 | } | |
1702 | ||
1703 | rc->dev.parent = dev; | |
1704 | rc->managed_alloc = true; | |
1705 | *dr = rc; | |
1706 | devres_add(dev, dr); | |
1707 | ||
1708 | return rc; | |
1709 | } | |
1710 | EXPORT_SYMBOL_GPL(devm_rc_allocate_device); | |
1711 | ||
f56928ab | 1712 | static int rc_prepare_rx_device(struct rc_dev *dev) |
d8b4b582 | 1713 | { |
fcb13097 | 1714 | int rc; |
7ff2c2bc | 1715 | struct rc_map *rc_map; |
6d741bfe | 1716 | u64 rc_proto; |
bc2a6c57 | 1717 | |
7ff2c2bc | 1718 | if (!dev->map_name) |
d8b4b582 | 1719 | return -EINVAL; |
bc2a6c57 | 1720 | |
d100e659 | 1721 | rc_map = rc_map_get(dev->map_name); |
b088ba65 | 1722 | if (!rc_map) |
d100e659 | 1723 | rc_map = rc_map_get(RC_MAP_EMPTY); |
b088ba65 | 1724 | if (!rc_map || !rc_map->scan || rc_map->size == 0) |
d8b4b582 DH |
1725 | return -EINVAL; |
1726 | ||
7ff2c2bc AS |
1727 | rc = ir_setkeytable(dev, rc_map); |
1728 | if (rc) | |
1729 | return rc; | |
1730 | ||
6d741bfe | 1731 | rc_proto = BIT_ULL(rc_map->rc_proto); |
7ff2c2bc | 1732 | |
831c4c81 SY |
1733 | if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol) |
1734 | dev->enabled_protocols = dev->allowed_protocols; | |
1735 | ||
a86d6df8 SY |
1736 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1737 | ir_raw_load_modules(&rc_proto); | |
1738 | ||
41380868 | 1739 | if (dev->change_protocol) { |
6d741bfe | 1740 | rc = dev->change_protocol(dev, &rc_proto); |
7ff2c2bc AS |
1741 | if (rc < 0) |
1742 | goto out_table; | |
6d741bfe | 1743 | dev->enabled_protocols = rc_proto; |
7ff2c2bc AS |
1744 | } |
1745 | ||
0ac5a603 | 1746 | /* Keyboard events */ |
d8b4b582 DH |
1747 | set_bit(EV_KEY, dev->input_dev->evbit); |
1748 | set_bit(EV_REP, dev->input_dev->evbit); | |
1749 | set_bit(EV_MSC, dev->input_dev->evbit); | |
1750 | set_bit(MSC_SCAN, dev->input_dev->mscbit); | |
fec225a0 SY |
1751 | bitmap_fill(dev->input_dev->keybit, KEY_CNT); |
1752 | ||
0ac5a603 SY |
1753 | /* Pointer/mouse events */ |
1754 | set_bit(EV_REL, dev->input_dev->evbit); | |
1755 | set_bit(REL_X, dev->input_dev->relbit); | |
1756 | set_bit(REL_Y, dev->input_dev->relbit); | |
1757 | ||
d8b4b582 DH |
1758 | if (dev->open) |
1759 | dev->input_dev->open = ir_open; | |
1760 | if (dev->close) | |
1761 | dev->input_dev->close = ir_close; | |
1762 | ||
b2aceb73 DH |
1763 | dev->input_dev->dev.parent = &dev->dev; |
1764 | memcpy(&dev->input_dev->id, &dev->input_id, sizeof(dev->input_id)); | |
1765 | dev->input_dev->phys = dev->input_phys; | |
518f4b26 | 1766 | dev->input_dev->name = dev->device_name; |
b2aceb73 | 1767 | |
f56928ab DH |
1768 | return 0; |
1769 | ||
1770 | out_table: | |
1771 | ir_free_table(&dev->rc_map); | |
1772 | ||
1773 | return rc; | |
1774 | } | |
1775 | ||
1776 | static int rc_setup_rx_device(struct rc_dev *dev) | |
1777 | { | |
1778 | int rc; | |
1779 | ||
b2aceb73 DH |
1780 | /* rc_open will be called here */ |
1781 | rc = input_register_device(dev->input_dev); | |
1782 | if (rc) | |
f56928ab | 1783 | return rc; |
b2aceb73 | 1784 | |
7ff2c2bc AS |
1785 | /* |
1786 | * Default delay of 250ms is too short for some protocols, especially | |
1787 | * since the timeout is currently set to 250ms. Increase it to 500ms, | |
1788 | * to avoid wrong repetition of the keycodes. Note that this must be | |
1789 | * set after the call to input_register_device(). | |
1790 | */ | |
57c642cb SY |
1791 | if (dev->allowed_protocols == RC_PROTO_BIT_CEC) |
1792 | dev->input_dev->rep[REP_DELAY] = 0; | |
1793 | else | |
1794 | dev->input_dev->rep[REP_DELAY] = 500; | |
7ff2c2bc AS |
1795 | |
1796 | /* | |
1797 | * As a repeat event on protocols like RC-5 and NEC take as long as | |
1798 | * 110/114ms, using 33ms as a repeat period is not the right thing | |
1799 | * to do. | |
1800 | */ | |
1801 | dev->input_dev->rep[REP_PERIOD] = 125; | |
1802 | ||
7ff2c2bc | 1803 | return 0; |
7ff2c2bc AS |
1804 | } |
1805 | ||
1806 | static void rc_free_rx_device(struct rc_dev *dev) | |
1807 | { | |
f56928ab | 1808 | if (!dev) |
7ff2c2bc AS |
1809 | return; |
1810 | ||
f56928ab DH |
1811 | if (dev->input_dev) { |
1812 | input_unregister_device(dev->input_dev); | |
1813 | dev->input_dev = NULL; | |
1814 | } | |
7ff2c2bc | 1815 | |
f56928ab | 1816 | ir_free_table(&dev->rc_map); |
7ff2c2bc AS |
1817 | } |
1818 | ||
1819 | int rc_register_device(struct rc_dev *dev) | |
1820 | { | |
7ff2c2bc AS |
1821 | const char *path; |
1822 | int attr = 0; | |
1823 | int minor; | |
1824 | int rc; | |
1825 | ||
1826 | if (!dev) | |
1827 | return -EINVAL; | |
1828 | ||
fcb13097 DH |
1829 | minor = ida_simple_get(&rc_ida, 0, RC_DEV_MAX, GFP_KERNEL); |
1830 | if (minor < 0) | |
1831 | return minor; | |
1832 | ||
1833 | dev->minor = minor; | |
1834 | dev_set_name(&dev->dev, "rc%u", dev->minor); | |
1835 | dev_set_drvdata(&dev->dev, dev); | |
587d1b06 | 1836 | |
99b0f3c9 | 1837 | dev->dev.groups = dev->sysfs_groups; |
6d75db30 SY |
1838 | if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol) |
1839 | dev->sysfs_groups[attr++] = &rc_dev_ro_protocol_attr_grp; | |
1840 | else if (dev->driver_type != RC_DRIVER_IR_RAW_TX) | |
1841 | dev->sysfs_groups[attr++] = &rc_dev_rw_protocol_attr_grp; | |
99b0f3c9 | 1842 | if (dev->s_filter) |
120703f9 | 1843 | dev->sysfs_groups[attr++] = &rc_dev_filter_attr_grp; |
99b0f3c9 DH |
1844 | if (dev->s_wakeup_filter) |
1845 | dev->sysfs_groups[attr++] = &rc_dev_wakeup_filter_attr_grp; | |
99b0f3c9 DH |
1846 | dev->sysfs_groups[attr++] = NULL; |
1847 | ||
a60d64b1 | 1848 | if (dev->driver_type == RC_DRIVER_IR_RAW) { |
f56928ab DH |
1849 | rc = ir_raw_event_prepare(dev); |
1850 | if (rc < 0) | |
1851 | goto out_minor; | |
1852 | } | |
1853 | ||
1854 | if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { | |
1855 | rc = rc_prepare_rx_device(dev); | |
1856 | if (rc) | |
1857 | goto out_raw; | |
1858 | } | |
1859 | ||
d8b4b582 DH |
1860 | rc = device_add(&dev->dev); |
1861 | if (rc) | |
f56928ab | 1862 | goto out_rx_free; |
bc2a6c57 | 1863 | |
d8b4b582 | 1864 | path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL); |
4dc0e908 | 1865 | dev_info(&dev->dev, "%s as %s\n", |
518f4b26 | 1866 | dev->device_name ?: "Unspecified device", path ?: "N/A"); |
bc2a6c57 MCC |
1867 | kfree(path); |
1868 | ||
d7832cd2 SY |
1869 | dev->registered = true; |
1870 | ||
f56928ab DH |
1871 | if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { |
1872 | rc = rc_setup_rx_device(dev); | |
1873 | if (rc) | |
1874 | goto out_dev; | |
1875 | } | |
1876 | ||
a60d64b1 | 1877 | /* Ensure that the lirc kfifo is setup before we start the thread */ |
62d6f199 | 1878 | if (dev->allowed_protocols != RC_PROTO_BIT_CEC) { |
a60d64b1 | 1879 | rc = ir_lirc_register(dev); |
d8b4b582 | 1880 | if (rc < 0) |
f56928ab | 1881 | goto out_rx; |
d8b4b582 DH |
1882 | } |
1883 | ||
a60d64b1 SY |
1884 | if (dev->driver_type == RC_DRIVER_IR_RAW) { |
1885 | rc = ir_raw_event_register(dev); | |
1886 | if (rc < 0) | |
1887 | goto out_lirc; | |
1888 | } | |
1889 | ||
1f17f684 SY |
1890 | dev_dbg(&dev->dev, "Registered rc%u (driver: %s)\n", dev->minor, |
1891 | dev->driver_name ? dev->driver_name : "unknown"); | |
d8b4b582 | 1892 | |
bc2a6c57 | 1893 | return 0; |
d8b4b582 | 1894 | |
a60d64b1 | 1895 | out_lirc: |
62d6f199 | 1896 | if (dev->allowed_protocols != RC_PROTO_BIT_CEC) |
a60d64b1 | 1897 | ir_lirc_unregister(dev); |
f56928ab DH |
1898 | out_rx: |
1899 | rc_free_rx_device(dev); | |
d8b4b582 DH |
1900 | out_dev: |
1901 | device_del(&dev->dev); | |
f56928ab DH |
1902 | out_rx_free: |
1903 | ir_free_table(&dev->rc_map); | |
1904 | out_raw: | |
1905 | ir_raw_event_free(dev); | |
1906 | out_minor: | |
fcb13097 | 1907 | ida_simple_remove(&rc_ida, minor); |
d8b4b582 | 1908 | return rc; |
bc2a6c57 | 1909 | } |
d8b4b582 | 1910 | EXPORT_SYMBOL_GPL(rc_register_device); |
bc2a6c57 | 1911 | |
ddbf7d5a HK |
1912 | static void devm_rc_release(struct device *dev, void *res) |
1913 | { | |
1914 | rc_unregister_device(*(struct rc_dev **)res); | |
1915 | } | |
1916 | ||
1917 | int devm_rc_register_device(struct device *parent, struct rc_dev *dev) | |
1918 | { | |
1919 | struct rc_dev **dr; | |
1920 | int ret; | |
1921 | ||
1922 | dr = devres_alloc(devm_rc_release, sizeof(*dr), GFP_KERNEL); | |
1923 | if (!dr) | |
1924 | return -ENOMEM; | |
1925 | ||
1926 | ret = rc_register_device(dev); | |
1927 | if (ret) { | |
1928 | devres_free(dr); | |
1929 | return ret; | |
1930 | } | |
1931 | ||
1932 | *dr = dev; | |
1933 | devres_add(parent, dr); | |
1934 | ||
1935 | return 0; | |
1936 | } | |
1937 | EXPORT_SYMBOL_GPL(devm_rc_register_device); | |
1938 | ||
d8b4b582 | 1939 | void rc_unregister_device(struct rc_dev *dev) |
bc2a6c57 | 1940 | { |
d8b4b582 DH |
1941 | if (!dev) |
1942 | return; | |
bc2a6c57 | 1943 | |
d8b4b582 DH |
1944 | if (dev->driver_type == RC_DRIVER_IR_RAW) |
1945 | ir_raw_event_unregister(dev); | |
1946 | ||
8d406881 SY |
1947 | del_timer_sync(&dev->timer_keyup); |
1948 | del_timer_sync(&dev->timer_repeat); | |
1949 | ||
7ff2c2bc | 1950 | rc_free_rx_device(dev); |
d8b4b582 | 1951 | |
7790e81f SY |
1952 | mutex_lock(&dev->lock); |
1953 | dev->registered = false; | |
1954 | mutex_unlock(&dev->lock); | |
1955 | ||
1956 | /* | |
1957 | * lirc device should be freed with dev->registered = false, so | |
1958 | * that userspace polling will get notified. | |
1959 | */ | |
62d6f199 | 1960 | if (dev->allowed_protocols != RC_PROTO_BIT_CEC) |
a60d64b1 SY |
1961 | ir_lirc_unregister(dev); |
1962 | ||
b05681b9 | 1963 | device_del(&dev->dev); |
d8b4b582 | 1964 | |
fcb13097 DH |
1965 | ida_simple_remove(&rc_ida, dev->minor); |
1966 | ||
ddbf7d5a HK |
1967 | if (!dev->managed_alloc) |
1968 | rc_free_device(dev); | |
bc2a6c57 | 1969 | } |
b05681b9 | 1970 | |
d8b4b582 | 1971 | EXPORT_SYMBOL_GPL(rc_unregister_device); |
bc2a6c57 MCC |
1972 | |
1973 | /* | |
1974 | * Init/exit code for the module. Basically, creates/removes /sys/class/rc | |
1975 | */ | |
1976 | ||
6bda9644 | 1977 | static int __init rc_core_init(void) |
bc2a6c57 | 1978 | { |
40fc5325 | 1979 | int rc = class_register(&rc_class); |
bc2a6c57 | 1980 | if (rc) { |
d3d96820 | 1981 | pr_err("rc_core: unable to register rc class\n"); |
bc2a6c57 MCC |
1982 | return rc; |
1983 | } | |
1984 | ||
a60d64b1 SY |
1985 | rc = lirc_dev_init(); |
1986 | if (rc) { | |
1987 | pr_err("rc_core: unable to init lirc\n"); | |
1988 | class_unregister(&rc_class); | |
1989 | return 0; | |
1990 | } | |
1991 | ||
153a60bb | 1992 | led_trigger_register_simple("rc-feedback", &led_feedback); |
d100e659 | 1993 | rc_map_register(&empty_map); |
bc2a6c57 MCC |
1994 | |
1995 | return 0; | |
1996 | } | |
1997 | ||
6bda9644 | 1998 | static void __exit rc_core_exit(void) |
bc2a6c57 | 1999 | { |
a60d64b1 | 2000 | lirc_dev_exit(); |
40fc5325 | 2001 | class_unregister(&rc_class); |
153a60bb | 2002 | led_trigger_unregister_simple(led_feedback); |
d100e659 | 2003 | rc_map_unregister(&empty_map); |
bc2a6c57 MCC |
2004 | } |
2005 | ||
e76d4ce4 | 2006 | subsys_initcall(rc_core_init); |
6bda9644 | 2007 | module_exit(rc_core_exit); |
bc2a6c57 | 2008 | |
37e59f87 | 2009 | MODULE_AUTHOR("Mauro Carvalho Chehab"); |
20835280 | 2010 | MODULE_LICENSE("GPL v2"); |