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