1 // SPDX-License-Identifier: GPL-2.0-only
3  * Regmap support for HD-audio verbs
9  * - Provided for not all verbs but only subset standard non-volatile verbs.
10  * - For reading, only AC_VERB_GET_* variants can be used.
11  * - For writing, mapped to the *corresponding* AC_VERB_SET_* variants,
45 		return !codec->cache_coef;  in hda_volatile_reg()
58 	case AC_VERB_GET_DEVICE_LIST:	/* read-only volatile */  in hda_volatile_reg()
72 	snd_array_for_each(&codec->vendor_verbs, i, v) {  in hda_writeable_reg()
77 	if (codec->caps_overwriting)  in hda_writeable_reg()
85 		return codec->cache_coef;  in hda_writeable_reg()
119 	if (codec->caps_overwriting)  in hda_readable_reg()
128 	 * writes at sync  in hda_readable_reg()
210 	if (!codec->cache_coef)  in hda_reg_read_coef()
211 		return -EINVAL;  in hda_reg_read_coef()
228 	if (!codec->cache_coef)  in hda_reg_write_coef()
229 		return -EINVAL;  in hda_reg_write_coef()
250 			return -EAGAIN;  in hda_reg_read()
252 	reg |= (codec->addr << 28);  in hda_reg_read()
270 			*val = -1;  in hda_reg_read()
286 	if (codec->caps_overwriting)  in hda_reg_write()
290 	reg |= (codec->addr << 28);  in hda_reg_write()
296 			return codec->lazy_cache ? 0 : -EAGAIN;  in hda_reg_write()
369  * snd_hdac_regmap_init - Initialize regmap for HDA register accesses
378 	regmap = regmap_init(&codec->dev, NULL, codec, &hda_regmap_cfg);  in snd_hdac_regmap_init()
381 	codec->regmap = regmap;  in snd_hdac_regmap_init()
382 	snd_array_init(&codec->vendor_verbs, sizeof(unsigned int), 8);  in snd_hdac_regmap_init()
388  * snd_hdac_regmap_exit - Release the regmap from HDA codec
393 	if (codec->regmap) {  in snd_hdac_regmap_exit()
394 		regmap_exit(codec->regmap);  in snd_hdac_regmap_exit()
395 		codec->regmap = NULL;  in snd_hdac_regmap_exit()
396 		snd_array_free(&codec->vendor_verbs);  in snd_hdac_regmap_exit()
402  * snd_hdac_regmap_add_vendor_verb - add a vendor-specific verb to regmap
411 	unsigned int *p = snd_array_new(&codec->vendor_verbs);  in snd_hdac_regmap_add_vendor_verb()
414 		return -ENOMEM;  in snd_hdac_regmap_add_vendor_verb()
424 /* write a pseudo-register value (w/o power sequence) */
430 	mutex_lock(&codec->regmap_lock);  in reg_raw_write()
431 	if (!codec->regmap)  in reg_raw_write()
434 		err = regmap_write(codec->regmap, reg, val);  in reg_raw_write()
435 	mutex_unlock(&codec->regmap_lock);  in reg_raw_write()
439 /* a helper macro to call @func_call; retry with power-up if failed */
443 		if (_err == -EAGAIN) {				\
452  * snd_hdac_regmap_write_raw - write a pseudo register with power mgmt
471 	mutex_lock(&codec->regmap_lock);  in reg_raw_read()
472 	if (uncached || !codec->regmap)  in reg_raw_read()
475 		err = regmap_read(codec->regmap, reg, val);  in reg_raw_read()
476 	mutex_unlock(&codec->regmap_lock);  in reg_raw_read()
488  * snd_hdac_regmap_read_raw - read a pseudo register with power mgmt
512 			  unsigned int mask, unsigned int val)  in reg_raw_update()  argument
518 	mutex_lock(&codec->regmap_lock);  in reg_raw_update()
519 	if (codec->regmap) {  in reg_raw_update()
520 		err = regmap_update_bits_check(codec->regmap, reg, mask, val,  in reg_raw_update()
527 			val &= mask;  in reg_raw_update()
528 			val |= orig & ~mask;  in reg_raw_update()
536 	mutex_unlock(&codec->regmap_lock);  in reg_raw_update()
541  * snd_hdac_regmap_update_raw - update a pseudo register with power mgmt
544  * @mask: bit mask to update
545  * @val: value to update
550 			       unsigned int mask, unsigned int val)  in snd_hdac_regmap_update_raw()  argument
552 	return CALL_RAW_FUNC(codec, reg_raw_update(codec, reg, mask, val));  in snd_hdac_regmap_update_raw()
557 			       unsigned int mask, unsigned int val)  in reg_raw_update_once()  argument
561 	if (!codec->regmap)  in reg_raw_update_once()
562 		return reg_raw_update(codec, reg, mask, val);  in reg_raw_update_once()
564 	mutex_lock(&codec->regmap_lock);  in reg_raw_update_once()
566 	if (!regcache_reg_cached(codec->regmap, reg))  in reg_raw_update_once()
567 		err = regmap_update_bits(codec->regmap, reg, mask, val);  in reg_raw_update_once()
568 	mutex_unlock(&codec->regmap_lock);  in reg_raw_update_once()
573  * snd_hdac_regmap_update_raw_once - initialize the register value only once
576  * @mask: bit mask to update
577  * @val: value to update
579  * Performs the update of the register bits only once when the register
580  * hasn't been initialized yet.  Used in HD-audio legacy driver.
584 				    unsigned int mask, unsigned int val)  in snd_hdac_regmap_update_raw_once()  argument
586 	return CALL_RAW_FUNC(codec, reg_raw_update_once(codec, reg, mask, val));  in snd_hdac_regmap_update_raw_once()
591  * snd_hdac_regmap_sync - sync out the cached values for PM resume
596 	mutex_lock(&codec->regmap_lock);  in snd_hdac_regmap_sync()
597 	if (codec->regmap)  in snd_hdac_regmap_sync()
598 		regcache_sync(codec->regmap);  in snd_hdac_regmap_sync()
599 	mutex_unlock(&codec->regmap_lock);  in snd_hdac_regmap_sync()