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// SPDX-License-Identifier: GPL-2.0
//
// soc-card.c
//
// Copyright (C) 2019 Renesas Electronics Corp.
// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
//
#include <linux/lockdep.h>
#include <linux/rwsem.h>
#include <sound/soc.h>
#include <sound/jack.h>
#define soc_card_ret(dai, ret) _soc_card_ret(dai, __func__, ret)
static inline int _soc_card_ret(struct snd_soc_card *card,
const char *func, int ret)
{
switch (ret) {
case -EPROBE_DEFER:
case -ENOTSUPP:
case 0:
break;
default:
dev_err(card->dev,
"ASoC: error at %s on %s: %d\n",
func, card->name, ret);
}
return ret;
}
struct snd_kcontrol *snd_soc_card_get_kcontrol_locked(struct snd_soc_card *soc_card,
const char *name)
{
struct snd_card *card = soc_card->snd_card;
struct snd_kcontrol *kctl;
/* must be held read or write */
lockdep_assert_held(&card->controls_rwsem);
if (unlikely(!name))
return NULL;
list_for_each_entry(kctl, &card->controls, list)
if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
return kctl;
return NULL;
}
EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol_locked);
struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
const char *name)
{
struct snd_card *card = soc_card->snd_card;
struct snd_kcontrol *kctl;
down_read(&card->controls_rwsem);
kctl = snd_soc_card_get_kcontrol_locked(soc_card, name);
up_read(&card->controls_rwsem);
return kctl;
}
EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
static int jack_new(struct snd_soc_card *card, const char *id, int type,
struct snd_soc_jack *jack, bool initial_kctl)
{
mutex_init(&jack->mutex);
jack->card = card;
INIT_LIST_HEAD(&jack->pins);
INIT_LIST_HEAD(&jack->jack_zones);
BLOCKING_INIT_NOTIFIER_HEAD(&jack->notifier);
return snd_jack_new(card->snd_card, id, type, &jack->jack, initial_kctl, false);
}
/**
* snd_soc_card_jack_new - Create a new jack without pins
* @card: ASoC card
* @id: an identifying string for this jack
* @type: a bitmask of enum snd_jack_type values that can be detected by
* this jack
* @jack: structure to use for the jack
*
* Creates a new jack object without pins. If adding pins later,
* snd_soc_card_jack_new_pins() should be used instead with 0 as num_pins
* argument.
*
* Returns zero if successful, or a negative error code on failure.
* On success jack will be initialised.
*/
int snd_soc_card_jack_new(struct snd_soc_card *card, const char *id, int type,
struct snd_soc_jack *jack)
{
return soc_card_ret(card, jack_new(card, id, type, jack, true));
}
EXPORT_SYMBOL_GPL(snd_soc_card_jack_new);
/**
* snd_soc_card_jack_new_pins - Create a new jack with pins
* @card: ASoC card
* @id: an identifying string for this jack
* @type: a bitmask of enum snd_jack_type values that can be detected by
* this jack
* @jack: structure to use for the jack
* @pins: Array of jack pins to be added to the jack or NULL
* @num_pins: Number of elements in the @pins array
*
* Creates a new jack object with pins. If not adding pins,
* snd_soc_card_jack_new() should be used instead.
*
* Returns zero if successful, or a negative error code on failure.
* On success jack will be initialised.
*/
int snd_soc_card_jack_new_pins(struct snd_soc_card *card, const char *id,
int type, struct snd_soc_jack *jack,
struct snd_soc_jack_pin *pins,
unsigned int num_pins)
{
int ret;
ret = jack_new(card, id, type, jack, false);
if (ret)
goto end;
if (num_pins)
ret = snd_soc_jack_add_pins(jack, num_pins, pins);
end:
return soc_card_ret(card, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_card_jack_new_pins);
int snd_soc_card_suspend_pre(struct snd_soc_card *card)
{
int ret = 0;
if (card->suspend_pre)
ret = card->suspend_pre(card);
return soc_card_ret(card, ret);
}
int snd_soc_card_suspend_post(struct snd_soc_card *card)
{
int ret = 0;
if (card->suspend_post)
ret = card->suspend_post(card);
return soc_card_ret(card, ret);
}
int snd_soc_card_resume_pre(struct snd_soc_card *card)
{
int ret = 0;
if (card->resume_pre)
ret = card->resume_pre(card);
return soc_card_ret(card, ret);
}
int snd_soc_card_resume_post(struct snd_soc_card *card)
{
int ret = 0;
if (card->resume_post)
ret = card->resume_post(card);
return soc_card_ret(card, ret);
}
int snd_soc_card_probe(struct snd_soc_card *card)
{
if (card->probe) {
int ret = card->probe(card);
if (ret < 0)
return soc_card_ret(card, ret);
/*
* It has "card->probe" and "card->late_probe" callbacks.
* So, set "probed" flag here, because it needs to care
* about "late_probe".
*
* see
* snd_soc_bind_card()
* snd_soc_card_late_probe()
*/
card->probed = 1;
}
return 0;
}
int snd_soc_card_late_probe(struct snd_soc_card *card)
{
if (card->late_probe) {
int ret = card->late_probe(card);
if (ret < 0)
return soc_card_ret(card, ret);
}
/*
* It has "card->probe" and "card->late_probe" callbacks,
* and "late_probe" callback is called after "probe".
* This means, we can set "card->probed" flag afer "late_probe"
* for all cases.
*
* see
* snd_soc_bind_card()
* snd_soc_card_probe()
*/
card->probed = 1;
return 0;
}
void snd_soc_card_fixup_controls(struct snd_soc_card *card)
{
if (card->fixup_controls)
card->fixup_controls(card);
}
int snd_soc_card_remove(struct snd_soc_card *card)
{
int ret = 0;
if (card->probed &&
card->remove)
ret = card->remove(card);
card->probed = 0;
return soc_card_ret(card, ret);
}
int snd_soc_card_set_bias_level(struct snd_soc_card *card,
struct snd_soc_dapm_context *dapm,
enum snd_soc_bias_level level)
{
int ret = 0;
if (card && card->set_bias_level)
ret = card->set_bias_level(card, dapm, level);
return soc_card_ret(card, ret);
}
int snd_soc_card_set_bias_level_post(struct snd_soc_card *card,
struct snd_soc_dapm_context *dapm,
enum snd_soc_bias_level level)
{
int ret = 0;
if (card && card->set_bias_level_post)
ret = card->set_bias_level_post(card, dapm, level);
return soc_card_ret(card, ret);
}
int snd_soc_card_add_dai_link(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_link)
{
int ret = 0;
if (card->add_dai_link)
ret = card->add_dai_link(card, dai_link);
return soc_card_ret(card, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_card_add_dai_link);
void snd_soc_card_remove_dai_link(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_link)
{
if (card->remove_dai_link)
card->remove_dai_link(card, dai_link);
}
EXPORT_SYMBOL_GPL(snd_soc_card_remove_dai_link);
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