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Merge remote-tracking branches 'asoc/fix/rt5677', 'asoc/fix/samsung' and 'asoc/fix...
[linux-2.6-block.git] / sound / pci / hda / hda_sysfs.c
CommitLineData
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>
17#include "hda_codec.h"
18#include "hda_local.h"
19#include <sound/hda_hwdep.h>
20#include <sound/minors.h>
21
22/* hint string pair */
23struct hda_hint {
24 const char *key;
25 const char *val; /* contained in the same alloc as key */
26};
27
28#ifdef CONFIG_PM
29static 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
38static 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
47static DEVICE_ATTR_RO(power_on_acct);
48static DEVICE_ATTR_RO(power_off_acct);
49#endif /* CONFIG_PM */
50
7639a06c 51#define CODEC_INFO_SHOW(type, field) \
b989d044
TI		 52static 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		 61static 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		 70CODEC_INFO_SHOW(vendor_id, core.vendor_id);
71CODEC_INFO_SHOW(subsystem_id, core.subsystem_id);
72CODEC_INFO_SHOW(revision_id, core.revision_id);
73CODEC_INFO_SHOW(afg, core.afg);
74CODEC_INFO_SHOW(mfg, core.mfg);
75CODEC_INFO_STR_SHOW(vendor_name, core.vendor_name);
76CODEC_INFO_STR_SHOW(chip_name, core.chip_name);
77CODEC_INFO_STR_SHOW(modelname, modelname);
b989d044
TI		 78
79static ssize_t pin_configs_show(struct hda_codec *codec,
80 struct snd_array *list,
81 char *buf)
82{
83 int i, len = 0;
84 mutex_lock(&codec->user_mutex);
85 for (i = 0; i < list->used; i++) {
86 struct hda_pincfg *pin = snd_array_elem(list, i);
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
94static 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
102static 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
116static 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
129static 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);
142 if (err < 0)
143 goto error;
144 /* rebuild PCMs */
145 err = snd_hda_codec_build_pcms(codec);
146 if (err < 0)
147 goto error;
148 /* rebuild mixers */
149 err = snd_hda_codec_build_controls(codec);
150 if (err < 0)
151 goto error;
6efdd851 152 err = snd_card_register(codec->card);
648a8d27
TI		 153 error:
154 snd_hda_power_down(codec);
155 return err;
156}
157
158/*
159 * allocate a string at most len chars, and remove the trailing EOL
160 */
161static char *kstrndup_noeol(const char *src, size_t len)
162{
163 char *s = kstrndup(src, len, GFP_KERNEL);
164 char *p;
165 if (!s)
166 return NULL;
167 p = strchr(s, '\n');
168 if (p)
169 *p = 0;
170 return s;
171}
172
7639a06c 173#define CODEC_INFO_STORE(type, field) \
648a8d27
TI		 174static ssize_t type##_store(struct device *dev, \
175 struct device_attribute *attr, \
176 const char *buf, size_t count) \
177{ \
178 struct hda_codec *codec = dev_get_drvdata(dev); \
179 unsigned long val; \
180 int err = kstrtoul(buf, 0, &val); \
181 if (err < 0) \
182 return err; \
7639a06c 183 codec->field = val; \
648a8d27
TI		 184 return count; \
185}
186
7639a06c 187#define CODEC_INFO_STR_STORE(type, field) \
648a8d27
TI		 188static ssize_t type##_store(struct device *dev, \
189 struct device_attribute *attr, \
190 const char *buf, size_t count) \
191{ \
192 struct hda_codec *codec = dev_get_drvdata(dev); \
193 char *s = kstrndup_noeol(buf, 64); \
194 if (!s) \
195 return -ENOMEM; \
7639a06c
TI		 196 kfree(codec->field); \
197 codec->field = s; \
648a8d27
TI		 198 return count; \
199}
200
7639a06c
TI		 201CODEC_INFO_STORE(vendor_id, core.vendor_id);
202CODEC_INFO_STORE(subsystem_id, core.subsystem_id);
203CODEC_INFO_STORE(revision_id, core.revision_id);
204CODEC_INFO_STR_STORE(vendor_name, core.vendor_name);
205CODEC_INFO_STR_STORE(chip_name, core.chip_name);
206CODEC_INFO_STR_STORE(modelname, modelname);
648a8d27
TI		 207
208#define CODEC_ACTION_STORE(type) \
209static ssize_t type##_store(struct device *dev, \
210 struct device_attribute *attr, \
211 const char *buf, size_t count) \
212{ \
213 struct hda_codec *codec = dev_get_drvdata(dev); \
214 int err = 0; \
215 if (*buf) \
216 err = type##_codec(codec); \
217 return err < 0 ? err : count; \
218}
219
220CODEC_ACTION_STORE(reconfig);
221CODEC_ACTION_STORE(clear);
222
223static ssize_t init_verbs_show(struct device *dev,
224 struct device_attribute *attr,
225 char *buf)
226{
227 struct hda_codec *codec = dev_get_drvdata(dev);
228 int i, len = 0;
229 mutex_lock(&codec->user_mutex);
230 for (i = 0; i < codec->init_verbs.used; i++) {
231 struct hda_verb *v = snd_array_elem(&codec->init_verbs, i);
232 len += snprintf(buf + len, PAGE_SIZE - len,
233 "0x%02x 0x%03x 0x%04x\n",
234 v->nid, v->verb, v->param);
235 }
236 mutex_unlock(&codec->user_mutex);
237 return len;
238}
239
240static int parse_init_verbs(struct hda_codec *codec, const char *buf)
241{
242 struct hda_verb *v;
243 int nid, verb, param;
244
245 if (sscanf(buf, "%i %i %i", &nid, &verb, &param) != 3)
246 return -EINVAL;
247 if (!nid || !verb)
248 return -EINVAL;
249 mutex_lock(&codec->user_mutex);
250 v = snd_array_new(&codec->init_verbs);
251 if (!v) {
252 mutex_unlock(&codec->user_mutex);
253 return -ENOMEM;
254 }
255 v->nid = nid;
256 v->verb = verb;
257 v->param = param;
258 mutex_unlock(&codec->user_mutex);
259 return 0;
260}
261
262static ssize_t init_verbs_store(struct device *dev,
263 struct device_attribute *attr,
264 const char *buf, size_t count)
265{
266 struct hda_codec *codec = dev_get_drvdata(dev);
267 int err = parse_init_verbs(codec, buf);
268 if (err < 0)
269 return err;
270 return count;
271}
272
273static ssize_t hints_show(struct device *dev,
274 struct device_attribute *attr,
275 char *buf)
276{
277 struct hda_codec *codec = dev_get_drvdata(dev);
278 int i, len = 0;
279 mutex_lock(&codec->user_mutex);
280 for (i = 0; i < codec->hints.used; i++) {
281 struct hda_hint *hint = snd_array_elem(&codec->hints, i);
282 len += snprintf(buf + len, PAGE_SIZE - len,
283 "%s = %s\n", hint->key, hint->val);
284 }
285 mutex_unlock(&codec->user_mutex);
286 return len;
287}
288
289static struct hda_hint *get_hint(struct hda_codec *codec, const char *key)
290{
291 int i;
292
293 for (i = 0; i < codec->hints.used; i++) {
294 struct hda_hint *hint = snd_array_elem(&codec->hints, i);
295 if (!strcmp(hint->key, key))
296 return hint;
297 }
298 return NULL;
299}
300
301static void remove_trail_spaces(char *str)
302{
303 char *p;
304 if (!*str)
305 return;
306 p = str + strlen(str) - 1;
307 for (; isspace(*p); p--) {
308 *p = 0;
309 if (p == str)
310 return;
311 }
312}
313
314#define MAX_HINTS 1024
315
316static int parse_hints(struct hda_codec *codec, const char *buf)
317{
318 char *key, *val;
319 struct hda_hint *hint;
320 int err = 0;
321
322 buf = skip_spaces(buf);
323 if (!*buf || *buf == '#' || *buf == '\n')
324 return 0;
325 if (*buf == '=')
326 return -EINVAL;
327 key = kstrndup_noeol(buf, 1024);
328 if (!key)
329 return -ENOMEM;
330 /* extract key and val */
331 val = strchr(key, '=');
332 if (!val) {
333 kfree(key);
334 return -EINVAL;
335 }
336 *val++ = 0;
337 val = skip_spaces(val);
338 remove_trail_spaces(key);
339 remove_trail_spaces(val);
340 mutex_lock(&codec->user_mutex);
341 hint = get_hint(codec, key);
342 if (hint) {
343 /* replace */
344 kfree(hint->key);
345 hint->key = key;
346 hint->val = val;
347 goto unlock;
348 }
349 /* allocate a new hint entry */
350 if (codec->hints.used >= MAX_HINTS)
351 hint = NULL;
352 else
353 hint = snd_array_new(&codec->hints);
354 if (hint) {
355 hint->key = key;
356 hint->val = val;
357 } else {
358 err = -ENOMEM;
359 }
360 unlock:
361 mutex_unlock(&codec->user_mutex);
362 if (err)
363 kfree(key);
364 return err;
365}
366
367static ssize_t hints_store(struct device *dev,
368 struct device_attribute *attr,
369 const char *buf, size_t count)
370{
371 struct hda_codec *codec = dev_get_drvdata(dev);
372 int err = parse_hints(codec, buf);
373 if (err < 0)
374 return err;
375 return count;
376}
377
648a8d27
TI		 378static ssize_t user_pin_configs_show(struct device *dev,
379 struct device_attribute *attr,
380 char *buf)
381{
382 struct hda_codec *codec = dev_get_drvdata(dev);
383 return pin_configs_show(codec, &codec->user_pins, buf);
384}
385
648a8d27
TI		 386#define MAX_PIN_CONFIGS 32
387
388static int parse_user_pin_configs(struct hda_codec *codec, const char *buf)
389{
390 int nid, cfg, err;
391
392 if (sscanf(buf, "%i %i", &nid, &cfg) != 2)
393 return -EINVAL;
394 if (!nid)
395 return -EINVAL;
396 mutex_lock(&codec->user_mutex);
397 err = snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg);
398 mutex_unlock(&codec->user_mutex);
399 return err;
400}
401
402static ssize_t user_pin_configs_store(struct device *dev,
403 struct device_attribute *attr,
404 const char *buf, size_t count)
405{
406 struct hda_codec *codec = dev_get_drvdata(dev);
407 int err = parse_user_pin_configs(codec, buf);
408 if (err < 0)
409 return err;
410 return count;
411}
412
b989d044 413/* sysfs attributes exposed only when CONFIG_SND_HDA_RECONFIG=y */
648a8d27
TI		 414static DEVICE_ATTR_RW(init_verbs);
415static DEVICE_ATTR_RW(hints);
648a8d27 416static DEVICE_ATTR_RW(user_pin_configs);
648a8d27
TI		 417static DEVICE_ATTR_WO(reconfig);
418static DEVICE_ATTR_WO(clear);
419
95a962c3
TI		 420/**
421 * snd_hda_get_hint - Look for hint string
422 * @codec: the HDA codec
423 * @key: the hint key string
424 *
425 * Look for a hint key/value pair matching with the given key string
426 * and returns the value string. If nothing found, returns NULL.
648a8d27
TI		 427 */
428const char *snd_hda_get_hint(struct hda_codec *codec, const char *key)
429{
430 struct hda_hint *hint = get_hint(codec, key);
431 return hint ? hint->val : NULL;
432}
433EXPORT_SYMBOL_GPL(snd_hda_get_hint);
434
95a962c3
TI		 435/**
436 * snd_hda_get_bool_hint - Get a boolean hint value
437 * @codec: the HDA codec
438 * @key: the hint key string
439 *
440 * Look for a hint key/value pair matching with the given key string
441 * and returns a boolean value parsed from the value. If no matching
442 * key is found, return a negative value.
443 */
648a8d27
TI		 444int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key)
445{
446 const char *p;
447 int ret;
448
449 mutex_lock(&codec->user_mutex);
450 p = snd_hda_get_hint(codec, key);
451 if (!p || !*p)
452 ret = -ENOENT;
453 else {
454 switch (toupper(*p)) {
455 case 'T': /* true */
456 case 'Y': /* yes */
457 case '1':
458 ret = 1;
459 break;
460 default:
461 ret = 0;
462 break;
463 }
464 }
465 mutex_unlock(&codec->user_mutex);
466 return ret;
467}
468EXPORT_SYMBOL_GPL(snd_hda_get_bool_hint);
469
95a962c3 470/**
c10b11f6 471 * snd_hda_get_int_hint - Get an integer hint value
95a962c3
TI		 472 * @codec: the HDA codec
473 * @key: the hint key string
474 * @valp: pointer to store a value
475 *
476 * Look for a hint key/value pair matching with the given key string
477 * and stores the integer value to @valp. If no matching key is found,
478 * return a negative error code. Otherwise it returns zero.
479 */
648a8d27
TI		 480int snd_hda_get_int_hint(struct hda_codec *codec, const char *key, int *valp)
481{
482 const char *p;
483 unsigned long val;
484 int ret;
485
486 mutex_lock(&codec->user_mutex);
487 p = snd_hda_get_hint(codec, key);
488 if (!p)
489 ret = -ENOENT;
490 else if (kstrtoul(p, 0, &val))
491 ret = -EINVAL;
492 else {
493 *valp = val;
494 ret = 0;
495 }
496 mutex_unlock(&codec->user_mutex);
497 return ret;
498}
499EXPORT_SYMBOL_GPL(snd_hda_get_int_hint);
500#endif /* CONFIG_SND_HDA_RECONFIG */
501
b989d044
TI		 502/*
503 * common sysfs attributes
504 */
505#ifdef CONFIG_SND_HDA_RECONFIG
506#define RECONFIG_DEVICE_ATTR(name) DEVICE_ATTR_RW(name)
507#else
508#define RECONFIG_DEVICE_ATTR(name) DEVICE_ATTR_RO(name)
509#endif
510static RECONFIG_DEVICE_ATTR(vendor_id);
511static RECONFIG_DEVICE_ATTR(subsystem_id);
512static RECONFIG_DEVICE_ATTR(revision_id);
513static DEVICE_ATTR_RO(afg);
514static DEVICE_ATTR_RO(mfg);
515static RECONFIG_DEVICE_ATTR(vendor_name);
516static RECONFIG_DEVICE_ATTR(chip_name);
517static RECONFIG_DEVICE_ATTR(modelname);
518static DEVICE_ATTR_RO(init_pin_configs);
519static DEVICE_ATTR_RO(driver_pin_configs);
520
521
648a8d27
TI		 522#ifdef CONFIG_SND_HDA_PATCH_LOADER
523
524/* parser mode */
525enum {
526 LINE_MODE_NONE,
527 LINE_MODE_CODEC,
528 LINE_MODE_MODEL,
529 LINE_MODE_PINCFG,
530 LINE_MODE_VERB,
531 LINE_MODE_HINT,
532 LINE_MODE_VENDOR_ID,
533 LINE_MODE_SUBSYSTEM_ID,
534 LINE_MODE_REVISION_ID,
535 LINE_MODE_CHIP_NAME,
536 NUM_LINE_MODES,
537};
538
539static inline int strmatch(const char *a, const char *b)
540{
8bb1ffdf 541 return strncasecmp(a, b, strlen(b)) == 0;
648a8d27
TI		 542}
543
544/* parse the contents after the line "[codec]"
545 * accept only the line with three numbers, and assign the current codec
546 */
547static void parse_codec_mode(char *buf, struct hda_bus *bus,
548 struct hda_codec **codecp)
549{
550 int vendorid, subid, caddr;
551 struct hda_codec *codec;
552
553 *codecp = NULL;
554 if (sscanf(buf, "%i %i %i", &vendorid, &subid, &caddr) == 3) {
d068ebc2 555 list_for_each_codec(codec, bus) {
7639a06c
TI		 556 if ((vendorid <= 0 || codec->core.vendor_id == vendorid) &&
557 (subid <= 0 || codec->core.subsystem_id == subid) &&
558 codec->core.addr == caddr) {
648a8d27
TI		 559 *codecp = codec;
560 break;
561 }
562 }
563 }
564}
565
566/* parse the contents after the other command tags, [pincfg], [verb],
567 * [vendor_id], [subsystem_id], [revision_id], [chip_name], [hint] and [model]
568 * just pass to the sysfs helper (only when any codec was specified)
569 */
570static void parse_pincfg_mode(char *buf, struct hda_bus *bus,
571 struct hda_codec **codecp)
572{
573 parse_user_pin_configs(*codecp, buf);
574}
575
576static void parse_verb_mode(char *buf, struct hda_bus *bus,
577 struct hda_codec **codecp)
578{
579 parse_init_verbs(*codecp, buf);
580}
581
582static void parse_hint_mode(char *buf, struct hda_bus *bus,
583 struct hda_codec **codecp)
584{
585 parse_hints(*codecp, buf);
586}
587
588static void parse_model_mode(char *buf, struct hda_bus *bus,
589 struct hda_codec **codecp)
590{
591 kfree((*codecp)->modelname);
592 (*codecp)->modelname = kstrdup(buf, GFP_KERNEL);
593}
594
595static void parse_chip_name_mode(char *buf, struct hda_bus *bus,
596 struct hda_codec **codecp)
597{
7639a06c
TI		 598 kfree((*codecp)->core.chip_name);
599 (*codecp)->core.chip_name = kstrdup(buf, GFP_KERNEL);
648a8d27
TI		 600}
601
602#define DEFINE_PARSE_ID_MODE(name) \
603static void parse_##name##_mode(char *buf, struct hda_bus *bus, \
604 struct hda_codec **codecp) \
605{ \
606 unsigned long val; \
607 if (!kstrtoul(buf, 0, &val)) \
7639a06c 608 (*codecp)->core.name = val; \
648a8d27
TI		 609}
610
611DEFINE_PARSE_ID_MODE(vendor_id);
612DEFINE_PARSE_ID_MODE(subsystem_id);
613DEFINE_PARSE_ID_MODE(revision_id);
614
615
616struct hda_patch_item {
617 const char *tag;
618 const char *alias;
619 void (*parser)(char *buf, struct hda_bus *bus, struct hda_codec **retc);
620};
621
622static struct hda_patch_item patch_items[NUM_LINE_MODES] = {
623 [LINE_MODE_CODEC] = {
624 .tag = "[codec]",
625 .parser = parse_codec_mode,
626 },
627 [LINE_MODE_MODEL] = {
628 .tag = "[model]",
629 .parser = parse_model_mode,
630 },
631 [LINE_MODE_VERB] = {
632 .tag = "[verb]",
633 .alias = "[init_verbs]",
634 .parser = parse_verb_mode,
635 },
636 [LINE_MODE_PINCFG] = {
637 .tag = "[pincfg]",
638 .alias = "[user_pin_configs]",
639 .parser = parse_pincfg_mode,
640 },
641 [LINE_MODE_HINT] = {
642 .tag = "[hint]",
643 .alias = "[hints]",
644 .parser = parse_hint_mode
645 },
646 [LINE_MODE_VENDOR_ID] = {
647 .tag = "[vendor_id]",
648 .parser = parse_vendor_id_mode,
649 },
650 [LINE_MODE_SUBSYSTEM_ID] = {
651 .tag = "[subsystem_id]",
652 .parser = parse_subsystem_id_mode,
653 },
654 [LINE_MODE_REVISION_ID] = {
655 .tag = "[revision_id]",
656 .parser = parse_revision_id_mode,
657 },
658 [LINE_MODE_CHIP_NAME] = {
659 .tag = "[chip_name]",
660 .parser = parse_chip_name_mode,
661 },
662};
663
664/* check the line starting with '[' -- change the parser mode accodingly */
665static int parse_line_mode(char *buf, struct hda_bus *bus)
666{
667 int i;
668 for (i = 0; i < ARRAY_SIZE(patch_items); i++) {
669 if (!patch_items[i].tag)
670 continue;
671 if (strmatch(buf, patch_items[i].tag))
672 return i;
673 if (patch_items[i].alias && strmatch(buf, patch_items[i].alias))
674 return i;
675 }
676 return LINE_MODE_NONE;
677}
678
679/* copy one line from the buffer in fw, and update the fields in fw
680 * return zero if it reaches to the end of the buffer, or non-zero
681 * if successfully copied a line
682 *
683 * the spaces at the beginning and the end of the line are stripped
684 */
685static int get_line_from_fw(char *buf, int size, size_t *fw_size_p,
686 const void **fw_data_p)
687{
688 int len;
689 size_t fw_size = *fw_size_p;
690 const char *p = *fw_data_p;
691
692 while (isspace(*p) && fw_size) {
693 p++;
694 fw_size--;
695 }
696 if (!fw_size)
697 return 0;
698
699 for (len = 0; len < fw_size; len++) {
700 if (!*p)
701 break;
702 if (*p == '\n') {
703 p++;
704 len++;
705 break;
706 }
707 if (len < size)
708 *buf++ = *p++;
709 }
710 *buf = 0;
711 *fw_size_p = fw_size - len;
712 *fw_data_p = p;
713 remove_trail_spaces(buf);
714 return 1;
715}
716
95a962c3
TI		 717/**
718 * snd_hda_load_patch - load a "patch" firmware file and parse it
719 * @bus: HD-audio bus
720 * @fw_size: the firmware byte size
721 * @fw_buf: the firmware data
648a8d27
TI		 722 */
723int snd_hda_load_patch(struct hda_bus *bus, size_t fw_size, const void *fw_buf)
724{
725 char buf[128];
726 struct hda_codec *codec;
727 int line_mode;
728
729 line_mode = LINE_MODE_NONE;
730 codec = NULL;
731 while (get_line_from_fw(buf, sizeof(buf) - 1, &fw_size, &fw_buf)) {
732 if (!*buf || *buf == '#' || *buf == '\n')
733 continue;
734 if (*buf == '[')
735 line_mode = parse_line_mode(buf, bus);
736 else if (patch_items[line_mode].parser &&
737 (codec || line_mode <= LINE_MODE_CODEC))
738 patch_items[line_mode].parser(buf, bus, &codec);
739 }
740 return 0;
741}
742EXPORT_SYMBOL_GPL(snd_hda_load_patch);
743#endif /* CONFIG_SND_HDA_PATCH_LOADER */
744
745/*
746 * sysfs entries
747 */
748static struct attribute *hda_dev_attrs[] = {
648a8d27
TI		 749 &dev_attr_vendor_id.attr,
750 &dev_attr_subsystem_id.attr,
751 &dev_attr_revision_id.attr,
752 &dev_attr_afg.attr,
753 &dev_attr_mfg.attr,
754 &dev_attr_vendor_name.attr,
755 &dev_attr_chip_name.attr,
756 &dev_attr_modelname.attr,
b989d044
TI		 757 &dev_attr_init_pin_configs.attr,
758 &dev_attr_driver_pin_configs.attr,
759#ifdef CONFIG_PM
760 &dev_attr_power_on_acct.attr,
761 &dev_attr_power_off_acct.attr,
762#endif
763#ifdef CONFIG_SND_HDA_RECONFIG
648a8d27
TI		 764 &dev_attr_init_verbs.attr,
765 &dev_attr_hints.attr,
648a8d27 766 &dev_attr_user_pin_configs.attr,
648a8d27
TI		 767 &dev_attr_reconfig.attr,
768 &dev_attr_clear.attr,
769#endif
770 NULL
771};
772
773static struct attribute_group hda_dev_attr_group = {
774 .attrs = hda_dev_attrs,
775};
776
777const struct attribute_group *snd_hda_dev_attr_groups[] = {
778 &hda_dev_attr_group,
779 NULL
780};
781
782void snd_hda_sysfs_init(struct hda_codec *codec)
783{
648a8d27 784 mutex_init(&codec->user_mutex);
b989d044 785#ifdef CONFIG_SND_HDA_RECONFIG
648a8d27
TI		 786 snd_array_init(&codec->init_verbs, sizeof(struct hda_verb), 32);
787 snd_array_init(&codec->hints, sizeof(struct hda_hint), 32);
788 snd_array_init(&codec->user_pins, sizeof(struct hda_pincfg), 16);
789#endif
790}
791
792void snd_hda_sysfs_clear(struct hda_codec *codec)
793{
794#ifdef CONFIG_SND_HDA_RECONFIG
795 int i;
796
797 /* clear init verbs */
798 snd_array_free(&codec->init_verbs);
799 /* clear hints */
800 for (i = 0; i < codec->hints.used; i++) {
801 struct hda_hint *hint = snd_array_elem(&codec->hints, i);
802 kfree(hint->key); /* we don't need to free hint->val */
803 }
804 snd_array_free(&codec->hints);
805 snd_array_free(&codec->user_pins);
806#endif
807}
Linux 6.x block layer and io_uring tree(s)