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457c8996 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
648a8d27 TI |
2 | /* |
3 | * sysfs interface for HD-audio codec | |
4 | * | |
5 | * Copyright (c) 2014 Takashi Iwai <tiwai@suse.de> | |
6 | * | |
7 | * split from hda_hwdep.c | |
8 | */ | |
9 | ||
10 | #include <linux/init.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/compat.h> | |
13 | #include <linux/mutex.h> | |
14 | #include <linux/ctype.h> | |
15 | #include <linux/string.h> | |
16 | #include <linux/export.h> | |
17 | #include <sound/core.h> | |
be57bfff | 18 | #include <sound/hda_codec.h> |
648a8d27 TI |
19 | #include "hda_local.h" |
20 | #include <sound/hda_hwdep.h> | |
21 | #include <sound/minors.h> | |
22 | ||
23 | /* hint string pair */ | |
24 | struct hda_hint { | |
25 | const char *key; | |
26 | const char *val; /* contained in the same alloc as key */ | |
27 | }; | |
28 | ||
29 | #ifdef CONFIG_PM | |
30 | static ssize_t power_on_acct_show(struct device *dev, | |
31 | struct device_attribute *attr, | |
32 | char *buf) | |
33 | { | |
34 | struct hda_codec *codec = dev_get_drvdata(dev); | |
35 | snd_hda_update_power_acct(codec); | |
36 | return sprintf(buf, "%u\n", jiffies_to_msecs(codec->power_on_acct)); | |
37 | } | |
38 | ||
39 | static ssize_t power_off_acct_show(struct device *dev, | |
40 | struct device_attribute *attr, | |
41 | char *buf) | |
42 | { | |
43 | struct hda_codec *codec = dev_get_drvdata(dev); | |
44 | snd_hda_update_power_acct(codec); | |
45 | return sprintf(buf, "%u\n", jiffies_to_msecs(codec->power_off_acct)); | |
46 | } | |
47 | ||
48 | static DEVICE_ATTR_RO(power_on_acct); | |
49 | static DEVICE_ATTR_RO(power_off_acct); | |
50 | #endif /* CONFIG_PM */ | |
51 | ||
7639a06c | 52 | #define CODEC_INFO_SHOW(type, field) \ |
b989d044 TI |
53 | static ssize_t type##_show(struct device *dev, \ |
54 | struct device_attribute *attr, \ | |
55 | char *buf) \ | |
56 | { \ | |
57 | struct hda_codec *codec = dev_get_drvdata(dev); \ | |
7639a06c | 58 | return sprintf(buf, "0x%x\n", codec->field); \ |
b989d044 TI |
59 | } |
60 | ||
7639a06c | 61 | #define CODEC_INFO_STR_SHOW(type, field) \ |
b989d044 TI |
62 | static ssize_t type##_show(struct device *dev, \ |
63 | struct device_attribute *attr, \ | |
64 | char *buf) \ | |
65 | { \ | |
66 | struct hda_codec *codec = dev_get_drvdata(dev); \ | |
67 | return sprintf(buf, "%s\n", \ | |
7639a06c | 68 | codec->field ? codec->field : ""); \ |
b989d044 TI |
69 | } |
70 | ||
7639a06c TI |
71 | CODEC_INFO_SHOW(vendor_id, core.vendor_id); |
72 | CODEC_INFO_SHOW(subsystem_id, core.subsystem_id); | |
73 | CODEC_INFO_SHOW(revision_id, core.revision_id); | |
74 | CODEC_INFO_SHOW(afg, core.afg); | |
75 | CODEC_INFO_SHOW(mfg, core.mfg); | |
76 | CODEC_INFO_STR_SHOW(vendor_name, core.vendor_name); | |
77 | CODEC_INFO_STR_SHOW(chip_name, core.chip_name); | |
78 | CODEC_INFO_STR_SHOW(modelname, modelname); | |
b989d044 TI |
79 | |
80 | static ssize_t pin_configs_show(struct hda_codec *codec, | |
81 | struct snd_array *list, | |
82 | char *buf) | |
83 | { | |
a9c2dfc8 | 84 | const struct hda_pincfg *pin; |
b989d044 TI |
85 | int i, len = 0; |
86 | mutex_lock(&codec->user_mutex); | |
a9c2dfc8 | 87 | snd_array_for_each(list, i, pin) { |
b989d044 TI |
88 | len += sprintf(buf + len, "0x%02x 0x%08x\n", |
89 | pin->nid, pin->cfg); | |
90 | } | |
91 | mutex_unlock(&codec->user_mutex); | |
92 | return len; | |
93 | } | |
94 | ||
95 | static ssize_t init_pin_configs_show(struct device *dev, | |
96 | struct device_attribute *attr, | |
97 | char *buf) | |
98 | { | |
99 | struct hda_codec *codec = dev_get_drvdata(dev); | |
100 | return pin_configs_show(codec, &codec->init_pins, buf); | |
101 | } | |
102 | ||
103 | static ssize_t driver_pin_configs_show(struct device *dev, | |
104 | struct device_attribute *attr, | |
105 | char *buf) | |
106 | { | |
107 | struct hda_codec *codec = dev_get_drvdata(dev); | |
108 | return pin_configs_show(codec, &codec->driver_pins, buf); | |
109 | } | |
110 | ||
648a8d27 TI |
111 | #ifdef CONFIG_SND_HDA_RECONFIG |
112 | ||
113 | /* | |
114 | * sysfs interface | |
115 | */ | |
116 | ||
117 | static int clear_codec(struct hda_codec *codec) | |
118 | { | |
119 | int err; | |
120 | ||
121 | err = snd_hda_codec_reset(codec); | |
122 | if (err < 0) { | |
4e76a883 | 123 | codec_err(codec, "The codec is being used, can't free.\n"); |
648a8d27 TI |
124 | return err; |
125 | } | |
126 | snd_hda_sysfs_clear(codec); | |
127 | return 0; | |
128 | } | |
129 | ||
130 | static int reconfig_codec(struct hda_codec *codec) | |
131 | { | |
132 | int err; | |
133 | ||
134 | snd_hda_power_up(codec); | |
4e76a883 | 135 | codec_info(codec, "hda-codec: reconfiguring\n"); |
648a8d27 TI |
136 | err = snd_hda_codec_reset(codec); |
137 | if (err < 0) { | |
4e76a883 | 138 | codec_err(codec, |
648a8d27 TI |
139 | "The codec is being used, can't reconfigure.\n"); |
140 | goto error; | |
141 | } | |
142 | err = snd_hda_codec_configure(codec); | |
648a8d27 TI |
143 | if (err < 0) |
144 | goto error; | |
6efdd851 | 145 | err = snd_card_register(codec->card); |
648a8d27 TI |
146 | error: |
147 | snd_hda_power_down(codec); | |
148 | return err; | |
149 | } | |
150 | ||
151 | /* | |
152 | * allocate a string at most len chars, and remove the trailing EOL | |
153 | */ | |
154 | static char *kstrndup_noeol(const char *src, size_t len) | |
155 | { | |
156 | char *s = kstrndup(src, len, GFP_KERNEL); | |
157 | char *p; | |
158 | if (!s) | |
159 | return NULL; | |
160 | p = strchr(s, '\n'); | |
161 | if (p) | |
162 | *p = 0; | |
163 | return s; | |
164 | } | |
165 | ||
7639a06c | 166 | #define CODEC_INFO_STORE(type, field) \ |
648a8d27 TI |
167 | static ssize_t type##_store(struct device *dev, \ |
168 | struct device_attribute *attr, \ | |
169 | const char *buf, size_t count) \ | |
170 | { \ | |
171 | struct hda_codec *codec = dev_get_drvdata(dev); \ | |
172 | unsigned long val; \ | |
173 | int err = kstrtoul(buf, 0, &val); \ | |
174 | if (err < 0) \ | |
175 | return err; \ | |
7639a06c | 176 | codec->field = val; \ |
648a8d27 TI |
177 | return count; \ |
178 | } | |
179 | ||
7639a06c | 180 | #define CODEC_INFO_STR_STORE(type, field) \ |
648a8d27 TI |
181 | static ssize_t type##_store(struct device *dev, \ |
182 | struct device_attribute *attr, \ | |
183 | const char *buf, size_t count) \ | |
184 | { \ | |
185 | struct hda_codec *codec = dev_get_drvdata(dev); \ | |
186 | char *s = kstrndup_noeol(buf, 64); \ | |
187 | if (!s) \ | |
188 | return -ENOMEM; \ | |
7639a06c TI |
189 | kfree(codec->field); \ |
190 | codec->field = s; \ | |
648a8d27 TI |
191 | return count; \ |
192 | } | |
193 | ||
7639a06c TI |
194 | CODEC_INFO_STORE(vendor_id, core.vendor_id); |
195 | CODEC_INFO_STORE(subsystem_id, core.subsystem_id); | |
196 | CODEC_INFO_STORE(revision_id, core.revision_id); | |
197 | CODEC_INFO_STR_STORE(vendor_name, core.vendor_name); | |
198 | CODEC_INFO_STR_STORE(chip_name, core.chip_name); | |
199 | CODEC_INFO_STR_STORE(modelname, modelname); | |
648a8d27 TI |
200 | |
201 | #define CODEC_ACTION_STORE(type) \ | |
202 | static ssize_t type##_store(struct device *dev, \ | |
203 | struct device_attribute *attr, \ | |
204 | const char *buf, size_t count) \ | |
205 | { \ | |
206 | struct hda_codec *codec = dev_get_drvdata(dev); \ | |
207 | int err = 0; \ | |
208 | if (*buf) \ | |
209 | err = type##_codec(codec); \ | |
210 | return err < 0 ? err : count; \ | |
211 | } | |
212 | ||
213 | CODEC_ACTION_STORE(reconfig); | |
214 | CODEC_ACTION_STORE(clear); | |
215 | ||
216 | static ssize_t init_verbs_show(struct device *dev, | |
217 | struct device_attribute *attr, | |
218 | char *buf) | |
219 | { | |
220 | struct hda_codec *codec = dev_get_drvdata(dev); | |
a9c2dfc8 | 221 | const struct hda_verb *v; |
648a8d27 TI |
222 | int i, len = 0; |
223 | mutex_lock(&codec->user_mutex); | |
a9c2dfc8 | 224 | snd_array_for_each(&codec->init_verbs, i, v) { |
44eeb081 | 225 | len += scnprintf(buf + len, PAGE_SIZE - len, |
648a8d27 TI |
226 | "0x%02x 0x%03x 0x%04x\n", |
227 | v->nid, v->verb, v->param); | |
228 | } | |
229 | mutex_unlock(&codec->user_mutex); | |
230 | return len; | |
231 | } | |
232 | ||
233 | static int parse_init_verbs(struct hda_codec *codec, const char *buf) | |
234 | { | |
235 | struct hda_verb *v; | |
236 | int nid, verb, param; | |
237 | ||
238 | if (sscanf(buf, "%i %i %i", &nid, &verb, ¶m) != 3) | |
239 | return -EINVAL; | |
240 | if (!nid || !verb) | |
241 | return -EINVAL; | |
242 | mutex_lock(&codec->user_mutex); | |
243 | v = snd_array_new(&codec->init_verbs); | |
244 | if (!v) { | |
245 | mutex_unlock(&codec->user_mutex); | |
246 | return -ENOMEM; | |
247 | } | |
248 | v->nid = nid; | |
249 | v->verb = verb; | |
250 | v->param = param; | |
251 | mutex_unlock(&codec->user_mutex); | |
252 | return 0; | |
253 | } | |
254 | ||
255 | static ssize_t init_verbs_store(struct device *dev, | |
256 | struct device_attribute *attr, | |
257 | const char *buf, size_t count) | |
258 | { | |
259 | struct hda_codec *codec = dev_get_drvdata(dev); | |
260 | int err = parse_init_verbs(codec, buf); | |
261 | if (err < 0) | |
262 | return err; | |
263 | return count; | |
264 | } | |
265 | ||
266 | static ssize_t hints_show(struct device *dev, | |
267 | struct device_attribute *attr, | |
268 | char *buf) | |
269 | { | |
270 | struct hda_codec *codec = dev_get_drvdata(dev); | |
a9c2dfc8 | 271 | const struct hda_hint *hint; |
648a8d27 TI |
272 | int i, len = 0; |
273 | mutex_lock(&codec->user_mutex); | |
a9c2dfc8 | 274 | snd_array_for_each(&codec->hints, i, hint) { |
44eeb081 | 275 | len += scnprintf(buf + len, PAGE_SIZE - len, |
648a8d27 TI |
276 | "%s = %s\n", hint->key, hint->val); |
277 | } | |
278 | mutex_unlock(&codec->user_mutex); | |
279 | return len; | |
280 | } | |
281 | ||
282 | static struct hda_hint *get_hint(struct hda_codec *codec, const char *key) | |
283 | { | |
a9c2dfc8 | 284 | struct hda_hint *hint; |
648a8d27 TI |
285 | int i; |
286 | ||
a9c2dfc8 | 287 | snd_array_for_each(&codec->hints, i, hint) { |
648a8d27 TI |
288 | if (!strcmp(hint->key, key)) |
289 | return hint; | |
290 | } | |
291 | return NULL; | |
292 | } | |
293 | ||
294 | static void remove_trail_spaces(char *str) | |
295 | { | |
296 | char *p; | |
297 | if (!*str) | |
298 | return; | |
299 | p = str + strlen(str) - 1; | |
300 | for (; isspace(*p); p--) { | |
301 | *p = 0; | |
302 | if (p == str) | |
303 | return; | |
304 | } | |
305 | } | |
306 | ||
307 | #define MAX_HINTS 1024 | |
308 | ||
309 | static int parse_hints(struct hda_codec *codec, const char *buf) | |
310 | { | |
311 | char *key, *val; | |
312 | struct hda_hint *hint; | |
313 | int err = 0; | |
314 | ||
315 | buf = skip_spaces(buf); | |
316 | if (!*buf || *buf == '#' || *buf == '\n') | |
317 | return 0; | |
318 | if (*buf == '=') | |
319 | return -EINVAL; | |
320 | key = kstrndup_noeol(buf, 1024); | |
321 | if (!key) | |
322 | return -ENOMEM; | |
323 | /* extract key and val */ | |
324 | val = strchr(key, '='); | |
325 | if (!val) { | |
326 | kfree(key); | |
327 | return -EINVAL; | |
328 | } | |
329 | *val++ = 0; | |
330 | val = skip_spaces(val); | |
331 | remove_trail_spaces(key); | |
332 | remove_trail_spaces(val); | |
333 | mutex_lock(&codec->user_mutex); | |
334 | hint = get_hint(codec, key); | |
335 | if (hint) { | |
336 | /* replace */ | |
337 | kfree(hint->key); | |
338 | hint->key = key; | |
339 | hint->val = val; | |
340 | goto unlock; | |
341 | } | |
342 | /* allocate a new hint entry */ | |
343 | if (codec->hints.used >= MAX_HINTS) | |
344 | hint = NULL; | |
345 | else | |
346 | hint = snd_array_new(&codec->hints); | |
347 | if (hint) { | |
348 | hint->key = key; | |
349 | hint->val = val; | |
350 | } else { | |
351 | err = -ENOMEM; | |
352 | } | |
353 | unlock: | |
354 | mutex_unlock(&codec->user_mutex); | |
355 | if (err) | |
356 | kfree(key); | |
357 | return err; | |
358 | } | |
359 | ||
360 | static ssize_t hints_store(struct device *dev, | |
361 | struct device_attribute *attr, | |
362 | const char *buf, size_t count) | |
363 | { | |
364 | struct hda_codec *codec = dev_get_drvdata(dev); | |
365 | int err = parse_hints(codec, buf); | |
366 | if (err < 0) | |
367 | return err; | |
368 | return count; | |
369 | } | |
370 | ||
648a8d27 TI |
371 | static ssize_t user_pin_configs_show(struct device *dev, |
372 | struct device_attribute *attr, | |
373 | char *buf) | |
374 | { | |
375 | struct hda_codec *codec = dev_get_drvdata(dev); | |
376 | return pin_configs_show(codec, &codec->user_pins, buf); | |
377 | } | |
378 | ||
648a8d27 TI |
379 | #define MAX_PIN_CONFIGS 32 |
380 | ||
381 | static int parse_user_pin_configs(struct hda_codec *codec, const char *buf) | |
382 | { | |
383 | int nid, cfg, err; | |
384 | ||
385 | if (sscanf(buf, "%i %i", &nid, &cfg) != 2) | |
386 | return -EINVAL; | |
387 | if (!nid) | |
388 | return -EINVAL; | |
389 | mutex_lock(&codec->user_mutex); | |
390 | err = snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg); | |
391 | mutex_unlock(&codec->user_mutex); | |
392 | return err; | |
393 | } | |
394 | ||
395 | static ssize_t user_pin_configs_store(struct device *dev, | |
396 | struct device_attribute *attr, | |
397 | const char *buf, size_t count) | |
398 | { | |
399 | struct hda_codec *codec = dev_get_drvdata(dev); | |
400 | int err = parse_user_pin_configs(codec, buf); | |
401 | if (err < 0) | |
402 | return err; | |
403 | return count; | |
404 | } | |
405 | ||
b989d044 | 406 | /* sysfs attributes exposed only when CONFIG_SND_HDA_RECONFIG=y */ |
648a8d27 TI |
407 | static DEVICE_ATTR_RW(init_verbs); |
408 | static DEVICE_ATTR_RW(hints); | |
648a8d27 | 409 | static DEVICE_ATTR_RW(user_pin_configs); |
648a8d27 TI |
410 | static DEVICE_ATTR_WO(reconfig); |
411 | static DEVICE_ATTR_WO(clear); | |
412 | ||
95a962c3 TI |
413 | /** |
414 | * snd_hda_get_hint - Look for hint string | |
415 | * @codec: the HDA codec | |
416 | * @key: the hint key string | |
417 | * | |
418 | * Look for a hint key/value pair matching with the given key string | |
419 | * and returns the value string. If nothing found, returns NULL. | |
648a8d27 TI |
420 | */ |
421 | const char *snd_hda_get_hint(struct hda_codec *codec, const char *key) | |
422 | { | |
423 | struct hda_hint *hint = get_hint(codec, key); | |
424 | return hint ? hint->val : NULL; | |
425 | } | |
426 | EXPORT_SYMBOL_GPL(snd_hda_get_hint); | |
427 | ||
95a962c3 TI |
428 | /** |
429 | * snd_hda_get_bool_hint - Get a boolean hint value | |
430 | * @codec: the HDA codec | |
431 | * @key: the hint key string | |
432 | * | |
433 | * Look for a hint key/value pair matching with the given key string | |
434 | * and returns a boolean value parsed from the value. If no matching | |
435 | * key is found, return a negative value. | |
436 | */ | |
648a8d27 TI |
437 | int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key) |
438 | { | |
439 | const char *p; | |
440 | int ret; | |
441 | ||
442 | mutex_lock(&codec->user_mutex); | |
443 | p = snd_hda_get_hint(codec, key); | |
444 | if (!p || !*p) | |
445 | ret = -ENOENT; | |
446 | else { | |
447 | switch (toupper(*p)) { | |
448 | case 'T': /* true */ | |
449 | case 'Y': /* yes */ | |
450 | case '1': | |
451 | ret = 1; | |
452 | break; | |
453 | default: | |
454 | ret = 0; | |
455 | break; | |
456 | } | |
457 | } | |
458 | mutex_unlock(&codec->user_mutex); | |
459 | return ret; | |
460 | } | |
461 | EXPORT_SYMBOL_GPL(snd_hda_get_bool_hint); | |
462 | ||
95a962c3 | 463 | /** |
c10b11f6 | 464 | * snd_hda_get_int_hint - Get an integer hint value |
95a962c3 TI |
465 | * @codec: the HDA codec |
466 | * @key: the hint key string | |
467 | * @valp: pointer to store a value | |
468 | * | |
469 | * Look for a hint key/value pair matching with the given key string | |
470 | * and stores the integer value to @valp. If no matching key is found, | |
471 | * return a negative error code. Otherwise it returns zero. | |
472 | */ | |
648a8d27 TI |
473 | int snd_hda_get_int_hint(struct hda_codec *codec, const char *key, int *valp) |
474 | { | |
475 | const char *p; | |
476 | unsigned long val; | |
477 | int ret; | |
478 | ||
479 | mutex_lock(&codec->user_mutex); | |
480 | p = snd_hda_get_hint(codec, key); | |
481 | if (!p) | |
482 | ret = -ENOENT; | |
483 | else if (kstrtoul(p, 0, &val)) | |
484 | ret = -EINVAL; | |
485 | else { | |
486 | *valp = val; | |
487 | ret = 0; | |
488 | } | |
489 | mutex_unlock(&codec->user_mutex); | |
490 | return ret; | |
491 | } | |
492 | EXPORT_SYMBOL_GPL(snd_hda_get_int_hint); | |
493 | #endif /* CONFIG_SND_HDA_RECONFIG */ | |
494 | ||
b989d044 TI |
495 | /* |
496 | * common sysfs attributes | |
497 | */ | |
498 | #ifdef CONFIG_SND_HDA_RECONFIG | |
499 | #define RECONFIG_DEVICE_ATTR(name) DEVICE_ATTR_RW(name) | |
500 | #else | |
501 | #define RECONFIG_DEVICE_ATTR(name) DEVICE_ATTR_RO(name) | |
502 | #endif | |
503 | static RECONFIG_DEVICE_ATTR(vendor_id); | |
504 | static RECONFIG_DEVICE_ATTR(subsystem_id); | |
505 | static RECONFIG_DEVICE_ATTR(revision_id); | |
506 | static DEVICE_ATTR_RO(afg); | |
507 | static DEVICE_ATTR_RO(mfg); | |
508 | static RECONFIG_DEVICE_ATTR(vendor_name); | |
509 | static RECONFIG_DEVICE_ATTR(chip_name); | |
510 | static RECONFIG_DEVICE_ATTR(modelname); | |
511 | static DEVICE_ATTR_RO(init_pin_configs); | |
512 | static DEVICE_ATTR_RO(driver_pin_configs); | |
513 | ||
514 | ||
648a8d27 TI |
515 | #ifdef CONFIG_SND_HDA_PATCH_LOADER |
516 | ||
517 | /* parser mode */ | |
518 | enum { | |
519 | LINE_MODE_NONE, | |
520 | LINE_MODE_CODEC, | |
521 | LINE_MODE_MODEL, | |
522 | LINE_MODE_PINCFG, | |
523 | LINE_MODE_VERB, | |
524 | LINE_MODE_HINT, | |
525 | LINE_MODE_VENDOR_ID, | |
526 | LINE_MODE_SUBSYSTEM_ID, | |
527 | LINE_MODE_REVISION_ID, | |
528 | LINE_MODE_CHIP_NAME, | |
529 | NUM_LINE_MODES, | |
530 | }; | |
531 | ||
532 | static inline int strmatch(const char *a, const char *b) | |
533 | { | |
8bb1ffdf | 534 | return strncasecmp(a, b, strlen(b)) == 0; |
648a8d27 TI |
535 | } |
536 | ||
537 | /* parse the contents after the line "[codec]" | |
538 | * accept only the line with three numbers, and assign the current codec | |
539 | */ | |
540 | static void parse_codec_mode(char *buf, struct hda_bus *bus, | |
541 | struct hda_codec **codecp) | |
542 | { | |
543 | int vendorid, subid, caddr; | |
544 | struct hda_codec *codec; | |
545 | ||
546 | *codecp = NULL; | |
547 | if (sscanf(buf, "%i %i %i", &vendorid, &subid, &caddr) == 3) { | |
d068ebc2 | 548 | list_for_each_codec(codec, bus) { |
7639a06c TI |
549 | if ((vendorid <= 0 || codec->core.vendor_id == vendorid) && |
550 | (subid <= 0 || codec->core.subsystem_id == subid) && | |
551 | codec->core.addr == caddr) { | |
648a8d27 TI |
552 | *codecp = codec; |
553 | break; | |
554 | } | |
555 | } | |
556 | } | |
557 | } | |
558 | ||
559 | /* parse the contents after the other command tags, [pincfg], [verb], | |
560 | * [vendor_id], [subsystem_id], [revision_id], [chip_name], [hint] and [model] | |
561 | * just pass to the sysfs helper (only when any codec was specified) | |
562 | */ | |
563 | static void parse_pincfg_mode(char *buf, struct hda_bus *bus, | |
564 | struct hda_codec **codecp) | |
565 | { | |
566 | parse_user_pin_configs(*codecp, buf); | |
567 | } | |
568 | ||
569 | static void parse_verb_mode(char *buf, struct hda_bus *bus, | |
570 | struct hda_codec **codecp) | |
571 | { | |
572 | parse_init_verbs(*codecp, buf); | |
573 | } | |
574 | ||
575 | static void parse_hint_mode(char *buf, struct hda_bus *bus, | |
576 | struct hda_codec **codecp) | |
577 | { | |
578 | parse_hints(*codecp, buf); | |
579 | } | |
580 | ||
581 | static void parse_model_mode(char *buf, struct hda_bus *bus, | |
582 | struct hda_codec **codecp) | |
583 | { | |
584 | kfree((*codecp)->modelname); | |
585 | (*codecp)->modelname = kstrdup(buf, GFP_KERNEL); | |
586 | } | |
587 | ||
588 | static void parse_chip_name_mode(char *buf, struct hda_bus *bus, | |
589 | struct hda_codec **codecp) | |
590 | { | |
ded255be | 591 | snd_hda_codec_set_name(*codecp, buf); |
648a8d27 TI |
592 | } |
593 | ||
594 | #define DEFINE_PARSE_ID_MODE(name) \ | |
595 | static void parse_##name##_mode(char *buf, struct hda_bus *bus, \ | |
596 | struct hda_codec **codecp) \ | |
597 | { \ | |
598 | unsigned long val; \ | |
599 | if (!kstrtoul(buf, 0, &val)) \ | |
7639a06c | 600 | (*codecp)->core.name = val; \ |
648a8d27 TI |
601 | } |
602 | ||
603 | DEFINE_PARSE_ID_MODE(vendor_id); | |
604 | DEFINE_PARSE_ID_MODE(subsystem_id); | |
605 | DEFINE_PARSE_ID_MODE(revision_id); | |
606 | ||
607 | ||
608 | struct hda_patch_item { | |
609 | const char *tag; | |
610 | const char *alias; | |
611 | void (*parser)(char *buf, struct hda_bus *bus, struct hda_codec **retc); | |
612 | }; | |
613 | ||
bf82326f | 614 | static const struct hda_patch_item patch_items[NUM_LINE_MODES] = { |
648a8d27 TI |
615 | [LINE_MODE_CODEC] = { |
616 | .tag = "[codec]", | |
617 | .parser = parse_codec_mode, | |
618 | }, | |
619 | [LINE_MODE_MODEL] = { | |
620 | .tag = "[model]", | |
621 | .parser = parse_model_mode, | |
622 | }, | |
623 | [LINE_MODE_VERB] = { | |
624 | .tag = "[verb]", | |
625 | .alias = "[init_verbs]", | |
626 | .parser = parse_verb_mode, | |
627 | }, | |
628 | [LINE_MODE_PINCFG] = { | |
629 | .tag = "[pincfg]", | |
630 | .alias = "[user_pin_configs]", | |
631 | .parser = parse_pincfg_mode, | |
632 | }, | |
633 | [LINE_MODE_HINT] = { | |
634 | .tag = "[hint]", | |
635 | .alias = "[hints]", | |
636 | .parser = parse_hint_mode | |
637 | }, | |
638 | [LINE_MODE_VENDOR_ID] = { | |
639 | .tag = "[vendor_id]", | |
640 | .parser = parse_vendor_id_mode, | |
641 | }, | |
642 | [LINE_MODE_SUBSYSTEM_ID] = { | |
643 | .tag = "[subsystem_id]", | |
644 | .parser = parse_subsystem_id_mode, | |
645 | }, | |
646 | [LINE_MODE_REVISION_ID] = { | |
647 | .tag = "[revision_id]", | |
648 | .parser = parse_revision_id_mode, | |
649 | }, | |
650 | [LINE_MODE_CHIP_NAME] = { | |
651 | .tag = "[chip_name]", | |
652 | .parser = parse_chip_name_mode, | |
653 | }, | |
654 | }; | |
655 | ||
656 | /* check the line starting with '[' -- change the parser mode accodingly */ | |
657 | static int parse_line_mode(char *buf, struct hda_bus *bus) | |
658 | { | |
659 | int i; | |
660 | for (i = 0; i < ARRAY_SIZE(patch_items); i++) { | |
661 | if (!patch_items[i].tag) | |
662 | continue; | |
663 | if (strmatch(buf, patch_items[i].tag)) | |
664 | return i; | |
665 | if (patch_items[i].alias && strmatch(buf, patch_items[i].alias)) | |
666 | return i; | |
667 | } | |
668 | return LINE_MODE_NONE; | |
669 | } | |
670 | ||
671 | /* copy one line from the buffer in fw, and update the fields in fw | |
672 | * return zero if it reaches to the end of the buffer, or non-zero | |
673 | * if successfully copied a line | |
674 | * | |
675 | * the spaces at the beginning and the end of the line are stripped | |
676 | */ | |
677 | static int get_line_from_fw(char *buf, int size, size_t *fw_size_p, | |
678 | const void **fw_data_p) | |
679 | { | |
680 | int len; | |
681 | size_t fw_size = *fw_size_p; | |
682 | const char *p = *fw_data_p; | |
683 | ||
684 | while (isspace(*p) && fw_size) { | |
685 | p++; | |
686 | fw_size--; | |
687 | } | |
688 | if (!fw_size) | |
689 | return 0; | |
690 | ||
691 | for (len = 0; len < fw_size; len++) { | |
692 | if (!*p) | |
693 | break; | |
694 | if (*p == '\n') { | |
695 | p++; | |
696 | len++; | |
697 | break; | |
698 | } | |
699 | if (len < size) | |
700 | *buf++ = *p++; | |
701 | } | |
702 | *buf = 0; | |
703 | *fw_size_p = fw_size - len; | |
704 | *fw_data_p = p; | |
705 | remove_trail_spaces(buf); | |
706 | return 1; | |
707 | } | |
708 | ||
95a962c3 TI |
709 | /** |
710 | * snd_hda_load_patch - load a "patch" firmware file and parse it | |
711 | * @bus: HD-audio bus | |
712 | * @fw_size: the firmware byte size | |
713 | * @fw_buf: the firmware data | |
648a8d27 TI |
714 | */ |
715 | int snd_hda_load_patch(struct hda_bus *bus, size_t fw_size, const void *fw_buf) | |
716 | { | |
717 | char buf[128]; | |
718 | struct hda_codec *codec; | |
719 | int line_mode; | |
720 | ||
721 | line_mode = LINE_MODE_NONE; | |
722 | codec = NULL; | |
723 | while (get_line_from_fw(buf, sizeof(buf) - 1, &fw_size, &fw_buf)) { | |
724 | if (!*buf || *buf == '#' || *buf == '\n') | |
725 | continue; | |
726 | if (*buf == '[') | |
727 | line_mode = parse_line_mode(buf, bus); | |
728 | else if (patch_items[line_mode].parser && | |
729 | (codec || line_mode <= LINE_MODE_CODEC)) | |
730 | patch_items[line_mode].parser(buf, bus, &codec); | |
731 | } | |
732 | return 0; | |
733 | } | |
734 | EXPORT_SYMBOL_GPL(snd_hda_load_patch); | |
735 | #endif /* CONFIG_SND_HDA_PATCH_LOADER */ | |
736 | ||
737 | /* | |
738 | * sysfs entries | |
739 | */ | |
740 | static struct attribute *hda_dev_attrs[] = { | |
648a8d27 TI |
741 | &dev_attr_vendor_id.attr, |
742 | &dev_attr_subsystem_id.attr, | |
743 | &dev_attr_revision_id.attr, | |
744 | &dev_attr_afg.attr, | |
745 | &dev_attr_mfg.attr, | |
746 | &dev_attr_vendor_name.attr, | |
747 | &dev_attr_chip_name.attr, | |
748 | &dev_attr_modelname.attr, | |
b989d044 TI |
749 | &dev_attr_init_pin_configs.attr, |
750 | &dev_attr_driver_pin_configs.attr, | |
751 | #ifdef CONFIG_PM | |
752 | &dev_attr_power_on_acct.attr, | |
753 | &dev_attr_power_off_acct.attr, | |
754 | #endif | |
755 | #ifdef CONFIG_SND_HDA_RECONFIG | |
648a8d27 TI |
756 | &dev_attr_init_verbs.attr, |
757 | &dev_attr_hints.attr, | |
648a8d27 | 758 | &dev_attr_user_pin_configs.attr, |
648a8d27 TI |
759 | &dev_attr_reconfig.attr, |
760 | &dev_attr_clear.attr, | |
761 | #endif | |
762 | NULL | |
763 | }; | |
764 | ||
a5a041b6 | 765 | static const struct attribute_group hda_dev_attr_group = { |
648a8d27 TI |
766 | .attrs = hda_dev_attrs, |
767 | }; | |
768 | ||
769 | const struct attribute_group *snd_hda_dev_attr_groups[] = { | |
770 | &hda_dev_attr_group, | |
771 | NULL | |
772 | }; | |
773 | ||
774 | void snd_hda_sysfs_init(struct hda_codec *codec) | |
775 | { | |
648a8d27 | 776 | mutex_init(&codec->user_mutex); |
b989d044 | 777 | #ifdef CONFIG_SND_HDA_RECONFIG |
648a8d27 TI |
778 | snd_array_init(&codec->init_verbs, sizeof(struct hda_verb), 32); |
779 | snd_array_init(&codec->hints, sizeof(struct hda_hint), 32); | |
780 | snd_array_init(&codec->user_pins, sizeof(struct hda_pincfg), 16); | |
781 | #endif | |
782 | } | |
783 | ||
784 | void snd_hda_sysfs_clear(struct hda_codec *codec) | |
785 | { | |
786 | #ifdef CONFIG_SND_HDA_RECONFIG | |
a9c2dfc8 | 787 | struct hda_hint *hint; |
648a8d27 TI |
788 | int i; |
789 | ||
790 | /* clear init verbs */ | |
791 | snd_array_free(&codec->init_verbs); | |
792 | /* clear hints */ | |
a9c2dfc8 | 793 | snd_array_for_each(&codec->hints, i, hint) { |
648a8d27 TI |
794 | kfree(hint->key); /* we don't need to free hint->val */ |
795 | } | |
796 | snd_array_free(&codec->hints); | |
797 | snd_array_free(&codec->user_pins); | |
798 | #endif | |
799 | } |