1 // SPDX-License-Identifier: GPL-2.0-only
3  * sysfs interface for HD-audio codec
33 	struct hda_codec *codec = dev_get_drvdata(dev);  in power_on_acct_show()  local
34 	snd_hda_update_power_acct(codec);  in power_on_acct_show()
35 	return sysfs_emit(buf, "%u\n", jiffies_to_msecs(codec->power_on_acct));  in power_on_acct_show()
42 	struct hda_codec *codec = dev_get_drvdata(dev);  in power_off_acct_show()  local
43 	snd_hda_update_power_acct(codec);  in power_off_acct_show()
44 	return sysfs_emit(buf, "%u\n", jiffies_to_msecs(codec->power_off_acct));  in power_off_acct_show()
55 	struct hda_codec *codec = dev_get_drvdata(dev);		\
56 	return sysfs_emit(buf, "0x%x\n", codec->field);		\
64 	struct hda_codec *codec = dev_get_drvdata(dev);		\
66 			  codec->field ? codec->field : "");	\
78 static ssize_t pin_configs_show(struct hda_codec *codec,  in pin_configs_show()  argument
83 	int i, len = 0;  in pin_configs_show()
84 	mutex_lock(&codec->user_mutex);  in pin_configs_show()
86 		len += sysfs_emit_at(buf, len, "0x%02x 0x%08x\n",  in pin_configs_show()
87 				     pin->nid, pin->cfg);  in pin_configs_show()
89 	mutex_unlock(&codec->user_mutex);  in pin_configs_show()
97 	struct hda_codec *codec = dev_get_drvdata(dev);  in init_pin_configs_show()  local
98 	return pin_configs_show(codec, &codec->init_pins, buf);  in init_pin_configs_show()
105 	struct hda_codec *codec = dev_get_drvdata(dev);  in driver_pin_configs_show()  local
106 	return pin_configs_show(codec, &codec->driver_pins, buf);  in driver_pin_configs_show()
115 static int clear_codec(struct hda_codec *codec)  in clear_codec()  argument
119 	err = snd_hda_codec_reset(codec);  in clear_codec()
120 	if (err < 0) {  in clear_codec()
121 		codec_err(codec, "The codec is being used, can't free.\n");  in clear_codec()
124 	snd_hda_sysfs_clear(codec);  in clear_codec()
125 	return 0;  in clear_codec()
128 static int reconfig_codec(struct hda_codec *codec)  in reconfig_codec()  argument
132 	snd_hda_power_up(codec);  in reconfig_codec()
133 	codec_info(codec, "hda-codec: reconfiguring\n");  in reconfig_codec()
134 	err = snd_hda_codec_reset(codec);  in reconfig_codec()
135 	if (err < 0) {  in reconfig_codec()
136 		codec_err(codec,  in reconfig_codec()
137 			   "The codec is being used, can't reconfigure.\n");  in reconfig_codec()
140 	err = device_reprobe(hda_codec_dev(codec));  in reconfig_codec()
141 	if (err < 0)  in reconfig_codec()
143 	err = snd_card_register(codec->card);  in reconfig_codec()
145 	snd_hda_power_down(codec);  in reconfig_codec()
160 		*p = 0;  in kstrndup_noeol()
169 	struct hda_codec *codec = dev_get_drvdata(dev);		\
171 	int err = kstrtoul(buf, 0, &val);			\
172 	if (err < 0)						\
174 	codec->field = val;					\
183 	struct hda_codec *codec = dev_get_drvdata(dev);		\
186 		return -ENOMEM;					\
187 	kfree(codec->field);					\
188 	codec->field = s;					\
204 	struct hda_codec *codec = dev_get_drvdata(dev);		\
205 	int err = 0;						\
207 		err = type##_codec(codec);			\
208 	return err < 0 ? err : count;				\
218 	struct hda_codec *codec = dev_get_drvdata(dev);  in init_verbs_show()  local
220 	int i, len = 0;  in init_verbs_show()
221 	mutex_lock(&codec->user_mutex);  in init_verbs_show()
222 	snd_array_for_each(&codec->init_verbs, i, v) {  in init_verbs_show()
223 		len += sysfs_emit_at(buf, len, "0x%02x 0x%03x 0x%04x\n",  in init_verbs_show()
224 				     v->nid, v->verb, v->param);  in init_verbs_show()
226 	mutex_unlock(&codec->user_mutex);  in init_verbs_show()
230 static int parse_init_verbs(struct hda_codec *codec, const char *buf)  in parse_init_verbs()  argument
236 		return -EINVAL;  in parse_init_verbs()
238 		return -EINVAL;  in parse_init_verbs()
239 	mutex_lock(&codec->user_mutex);  in parse_init_verbs()
240 	v = snd_array_new(&codec->init_verbs);  in parse_init_verbs()
242 		mutex_unlock(&codec->user_mutex);  in parse_init_verbs()
243 		return -ENOMEM;  in parse_init_verbs()
245 	v->nid = nid;  in parse_init_verbs()
246 	v->verb = verb;  in parse_init_verbs()
247 	v->param = param;  in parse_init_verbs()
248 	mutex_unlock(&codec->user_mutex);  in parse_init_verbs()
249 	return 0;  in parse_init_verbs()
256 	struct hda_codec *codec = dev_get_drvdata(dev);  in init_verbs_store()  local
257 	int err = parse_init_verbs(codec, buf);  in init_verbs_store()
258 	if (err < 0)  in init_verbs_store()
267 	struct hda_codec *codec = dev_get_drvdata(dev);  in hints_show()  local
269 	int i, len = 0;  in hints_show()
270 	mutex_lock(&codec->user_mutex);  in hints_show()
271 	snd_array_for_each(&codec->hints, i, hint) {  in hints_show()
273 				     hint->key, hint->val);  in hints_show()
275 	mutex_unlock(&codec->user_mutex);  in hints_show()
279 static struct hda_hint *get_hint(struct hda_codec *codec, const char *key)  in get_hint()  argument
284 	snd_array_for_each(&codec->hints, i, hint) {  in get_hint()
285 		if (!strcmp(hint->key, key))  in get_hint()
296 	p = str + strlen(str) - 1;  in remove_trail_spaces()
297 	for (; isspace(*p); p--) {  in remove_trail_spaces()
298 		*p = 0;  in remove_trail_spaces()
306 static int parse_hints(struct hda_codec *codec, const char *buf)  in parse_hints()  argument
310 	int err = 0;  in parse_hints()
314 		return 0;  in parse_hints()
316 		return -EINVAL;  in parse_hints()
319 		return -ENOMEM;  in parse_hints()
324 		return -EINVAL;  in parse_hints()
326 	*val++ = 0;  in parse_hints()
330 	mutex_lock(&codec->user_mutex);  in parse_hints()
331 	hint = get_hint(codec, key);  in parse_hints()
334 		kfree(hint->key);  in parse_hints()
335 		hint->key = key;  in parse_hints()
336 		hint->val = val;  in parse_hints()
340 	if (codec->hints.used >= MAX_HINTS)  in parse_hints()
343 		hint = snd_array_new(&codec->hints);  in parse_hints()
345 		hint->key = key;  in parse_hints()
346 		hint->val = val;  in parse_hints()
348 		err = -ENOMEM;  in parse_hints()
351 	mutex_unlock(&codec->user_mutex);  in parse_hints()
361 	struct hda_codec *codec = dev_get_drvdata(dev);  in hints_store()  local
362 	int err = parse_hints(codec, buf);  in hints_store()
363 	if (err < 0)  in hints_store()
372 	struct hda_codec *codec = dev_get_drvdata(dev);  in user_pin_configs_show()  local
373 	return pin_configs_show(codec, &codec->user_pins, buf);  in user_pin_configs_show()
376 static int parse_user_pin_configs(struct hda_codec *codec, const char *buf)  in parse_user_pin_configs()  argument
381 		return -EINVAL;  in parse_user_pin_configs()
383 		return -EINVAL;  in parse_user_pin_configs()
384 	mutex_lock(&codec->user_mutex);  in parse_user_pin_configs()
385 	err = snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg);  in parse_user_pin_configs()
386 	mutex_unlock(&codec->user_mutex);  in parse_user_pin_configs()
394 	struct hda_codec *codec = dev_get_drvdata(dev);  in user_pin_configs_store()  local
395 	int err = parse_user_pin_configs(codec, buf);  in user_pin_configs_store()
396 	if (err < 0)  in user_pin_configs_store()
409  * snd_hda_get_hint - Look for hint string
410  * @codec: the HDA codec
416 const char *snd_hda_get_hint(struct hda_codec *codec, const char *key)  in snd_hda_get_hint()  argument
418 	struct hda_hint *hint = get_hint(codec, key);  in snd_hda_get_hint()
419 	return hint ? hint->val : NULL;  in snd_hda_get_hint()
424  * snd_hda_get_bool_hint - Get a boolean hint value
425  * @codec: the HDA codec
432 int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key)  in snd_hda_get_bool_hint()  argument
437 	mutex_lock(&codec->user_mutex);  in snd_hda_get_bool_hint()
438 	p = snd_hda_get_hint(codec, key);  in snd_hda_get_bool_hint()
440 		ret = -ENOENT;  in snd_hda_get_bool_hint()
449 			ret = 0;  in snd_hda_get_bool_hint()
453 	mutex_unlock(&codec->user_mutex);  in snd_hda_get_bool_hint()
459  * snd_hda_get_int_hint - Get an integer hint value
460  * @codec: the HDA codec
468 int snd_hda_get_int_hint(struct hda_codec *codec, const char *key, int *valp)  in snd_hda_get_int_hint()  argument
474 	mutex_lock(&codec->user_mutex);  in snd_hda_get_int_hint()
475 	p = snd_hda_get_hint(codec, key);  in snd_hda_get_int_hint()
477 		ret = -ENOENT;  in snd_hda_get_int_hint()
478 	else if (kstrtoul(p, 0, &val))  in snd_hda_get_int_hint()
479 		ret = -EINVAL;  in snd_hda_get_int_hint()
482 		ret = 0;  in snd_hda_get_int_hint()
484 	mutex_unlock(&codec->user_mutex);  in snd_hda_get_int_hint()
529 	return strncasecmp(a, b, strlen(b)) == 0;  in strmatch()
532 /* parse the contents after the line "[codec]"
533  * accept only the line with three numbers, and assign the current codec
539 	struct hda_codec *codec;  in parse_codec_mode()  local
543 		list_for_each_codec(codec, bus) {  in parse_codec_mode()
544 			if ((vendorid <= 0 || codec->core.vendor_id == vendorid) &&  in parse_codec_mode()
545 			    (subid <= 0 || codec->core.subsystem_id == subid) &&  in parse_codec_mode()
546 			    codec->core.addr == caddr) {  in parse_codec_mode()
547 				*codecp = codec;  in parse_codec_mode()
556  * just pass to the sysfs helper (only when any codec was specified)
579 	kfree((*codecp)->modelname);  in parse_model_mode()
580 	(*codecp)->modelname = kstrdup(buf, GFP_KERNEL);  in parse_model_mode()
594 	if (!kstrtoul(buf, 0, &val)) \
595 		(*codecp)->core.name = val; \
611 		.tag = "[codec]",
651 /* check the line starting with '[' -- change the parser mode accordingly */
655 	for (i = 0; i < ARRAY_SIZE(patch_items); i++) {  in parse_line_mode()
667  * return zero if it reaches to the end of the buffer, or non-zero
681 		fw_size--;  in get_line_from_fw()
684 		return 0;  in get_line_from_fw()
686 	for (len = 0; len < fw_size; len++) {  in get_line_from_fw()
697 	*buf = 0;  in get_line_from_fw()
698 	*fw_size_p = fw_size - len;  in get_line_from_fw()
705  * snd_hda_load_patch - load a "patch" firmware file and parse it
706  * @bus: HD-audio bus
713 	struct hda_codec *codec;  in snd_hda_load_patch()  local
717 	codec = NULL;  in snd_hda_load_patch()
718 	while (get_line_from_fw(buf, sizeof(buf) - 1, &fw_size, &fw_buf)) {  in snd_hda_load_patch()
724 			 (codec || line_mode <= LINE_MODE_CODEC))  in snd_hda_load_patch()
725 			patch_items[line_mode].parser(buf, bus, &codec);  in snd_hda_load_patch()
727 	return 0;  in snd_hda_load_patch()
767 void snd_hda_sysfs_init(struct hda_codec *codec)  in snd_hda_sysfs_init()  argument
769 	mutex_init(&codec->user_mutex);  in snd_hda_sysfs_init()
771 	snd_array_init(&codec->init_verbs, sizeof(struct hda_verb), 32);  in snd_hda_sysfs_init()
772 	snd_array_init(&codec->hints, sizeof(struct hda_hint), 32);  in snd_hda_sysfs_init()
773 	snd_array_init(&codec->user_pins, sizeof(struct hda_pincfg), 16);  in snd_hda_sysfs_init()
777 void snd_hda_sysfs_clear(struct hda_codec *codec)  in snd_hda_sysfs_clear()  argument
784 	snd_array_free(&codec->init_verbs);  in snd_hda_sysfs_clear()
786 	snd_array_for_each(&codec->hints, i, hint) {  in snd_hda_sysfs_clear()
787 		kfree(hint->key); /* we don't need to free hint->val */  in snd_hda_sysfs_clear()
789 	snd_array_free(&codec->hints);  in snd_hda_sysfs_clear()
790 	snd_array_free(&codec->user_pins);  in snd_hda_sysfs_clear()