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,
46 		return !codec->cache_coef;  in hda_volatile_reg()
59 	case AC_VERB_GET_DEVICE_LIST:	/* read-only volatile */  in hda_volatile_reg()
73 	snd_array_for_each(&codec->vendor_verbs, i, v) {  in hda_writeable_reg()
78 	if (codec->caps_overwriting)  in hda_writeable_reg()
86 		return codec->cache_coef;  in hda_writeable_reg()
120 	if (codec->caps_overwriting)  in hda_readable_reg()
129 	 * writes at sync  in hda_readable_reg()
211 	if (!codec->cache_coef)  in hda_reg_read_coef()
212 		return -EINVAL;  in hda_reg_read_coef()
229 	if (!codec->cache_coef)  in hda_reg_write_coef()
230 		return -EINVAL;  in hda_reg_write_coef()
251 			return -EAGAIN;  in hda_reg_read()
253 	reg |= (codec->addr << 28);  in hda_reg_read()
271 			*val = -1;  in hda_reg_read()
287 	if (codec->caps_overwriting)  in hda_reg_write()
291 	reg |= (codec->addr << 28);  in hda_reg_write()
297 			return codec->lazy_cache ? 0 : -EAGAIN;  in hda_reg_write()
370  * snd_hdac_regmap_init - Initialize regmap for HDA register accesses
379 	regmap = regmap_init(&codec->dev, NULL, codec, &hda_regmap_cfg);  in snd_hdac_regmap_init()
382 	codec->regmap = regmap;  in snd_hdac_regmap_init()
383 	snd_array_init(&codec->vendor_verbs, sizeof(unsigned int), 8);  in snd_hdac_regmap_init()
389  * snd_hdac_regmap_init - Release the regmap from HDA codec
394 	if (codec->regmap) {  in snd_hdac_regmap_exit()
395 		regmap_exit(codec->regmap);  in snd_hdac_regmap_exit()
396 		codec->regmap = NULL;  in snd_hdac_regmap_exit()
397 		snd_array_free(&codec->vendor_verbs);  in snd_hdac_regmap_exit()
403  * snd_hdac_regmap_add_vendor_verb - add a vendor-specific verb to regmap
412 	unsigned int *p = snd_array_new(&codec->vendor_verbs);  in snd_hdac_regmap_add_vendor_verb()
415 		return -ENOMEM;  in snd_hdac_regmap_add_vendor_verb()
425 /* write a pseudo-register value (w/o power sequence) */
431 	mutex_lock(&codec->regmap_lock);  in reg_raw_write()
432 	if (!codec->regmap)  in reg_raw_write()
435 		err = regmap_write(codec->regmap, reg, val);  in reg_raw_write()
436 	mutex_unlock(&codec->regmap_lock);  in reg_raw_write()
440 /* a helper macro to call @func_call; retry with power-up if failed */
444 		if (_err == -EAGAIN) {				\
453  * snd_hdac_regmap_write_raw - write a pseudo register with power mgmt
472 	mutex_lock(&codec->regmap_lock);  in reg_raw_read()
473 	if (uncached || !codec->regmap)  in reg_raw_read()
476 		err = regmap_read(codec->regmap, reg, val);  in reg_raw_read()
477 	mutex_unlock(&codec->regmap_lock);  in reg_raw_read()
489  * snd_hdac_regmap_read_raw - read a pseudo register with power mgmt
513 			  unsigned int mask, unsigned int val)  in reg_raw_update()  argument
519 	mutex_lock(&codec->regmap_lock);  in reg_raw_update()
520 	if (codec->regmap) {  in reg_raw_update()
521 		err = regmap_update_bits_check(codec->regmap, reg, mask, val,  in reg_raw_update()
528 			val &= mask;  in reg_raw_update()
529 			val |= orig & ~mask;  in reg_raw_update()
537 	mutex_unlock(&codec->regmap_lock);  in reg_raw_update()
542  * snd_hdac_regmap_update_raw - update a pseudo register with power mgmt
545  * @mask: bit mask to update
546  * @val: value to update
551 			       unsigned int mask, unsigned int val)  in snd_hdac_regmap_update_raw()  argument
553 	return CALL_RAW_FUNC(codec, reg_raw_update(codec, reg, mask, val));  in snd_hdac_regmap_update_raw()
558 			       unsigned int mask, unsigned int val)  in reg_raw_update_once()  argument
563 	if (!codec->regmap)  in reg_raw_update_once()
564 		return reg_raw_update(codec, reg, mask, val);  in reg_raw_update_once()
566 	mutex_lock(&codec->regmap_lock);  in reg_raw_update_once()
567 	regcache_cache_only(codec->regmap, true);  in reg_raw_update_once()
568 	err = regmap_read(codec->regmap, reg, &orig);  in reg_raw_update_once()
569 	regcache_cache_only(codec->regmap, false);  in reg_raw_update_once()
571 		err = regmap_update_bits(codec->regmap, reg, mask, val);  in reg_raw_update_once()
572 	mutex_unlock(&codec->regmap_lock);  in reg_raw_update_once()
577  * snd_hdac_regmap_update_raw_once - initialize the register value only once
580  * @mask: bit mask to update
581  * @val: value to update
583  * Performs the update of the register bits only once when the register
584  * hasn't been initialized yet.  Used in HD-audio legacy driver.
588 				    unsigned int mask, unsigned int val)  in snd_hdac_regmap_update_raw_once()  argument
590 	return CALL_RAW_FUNC(codec, reg_raw_update_once(codec, reg, mask, val));  in snd_hdac_regmap_update_raw_once()
595  * snd_hdac_regmap_sync - sync out the cached values for PM resume
600 	mutex_lock(&codec->regmap_lock);  in snd_hdac_regmap_sync()
601 	if (codec->regmap)  in snd_hdac_regmap_sync()
602 		regcache_sync(codec->regmap);  in snd_hdac_regmap_sync()
603 	mutex_unlock(&codec->regmap_lock);  in snd_hdac_regmap_sync()