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BACKPORT: ASoC: add snd_soc_card_mutex_lock/unlock()

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ASoC need to use card->mutex with _INIT or _RUNTIME,
but there is no helper function for it.

This patch adds its helper function and use it.

Because people might misunderstand that _init() is mutex initialization,
this patch renames _INIT to _ROOT and adds new
snd_soc_card_mutex_lock_root() for it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87a5zlx3tw.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Bug: 303236405
(cherry picked from commit 0f3b818486796ec8895fa4ccdf15edb759bff40a)
[ Yixuan Jiang: Fix minor conflict ]
Change-Id: Ie8cd7aeeea759576423760d25b5fb5b2c9ae0d12
Signed-off-by: Yixuan Jiang <yixuanjiang@google.com>
This commit is contained in:
Kuninori Morimoto 2023-04-17 00:35:18 +00:00 • committed by Todd Kjos
parent edfef8fdc9
commit 6cb2109589
3 changed files with 27 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

17
include/sound/soc-card.h
View file

@ -9,10 +9,25 @@
#define __SOC_CARD_H
enum snd_soc_card_subclass {
SND_SOC_CARD_CLASS_INIT = 0,
SND_SOC_CARD_CLASS_ROOT = 0,
SND_SOC_CARD_CLASS_RUNTIME = 1,
};
static inline void snd_soc_card_mutex_lock_root(struct snd_soc_card *card)
{
mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_ROOT);
}
static inline void snd_soc_card_mutex_lock(struct snd_soc_card *card)
{
mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
}
static inline void snd_soc_card_mutex_unlock(struct snd_soc_card *card)
{
mutex_unlock(&card->mutex);
}
struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
const char *name);
int snd_soc_card_jack_new(struct snd_soc_card *card, const char *id, int type,

18
sound/soc/soc-compress.c
View file

@ -142,7 +142,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream)
int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
int ret;
mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
snd_soc_card_mutex_lock(fe->card);
fe->dpcm[stream].runtime = fe_substream->runtime;
ret = dpcm_path_get(fe, stream, &list);
@ -189,7 +189,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream)
snd_soc_runtime_activate(fe, stream);
snd_soc_dpcm_mutex_unlock(fe);
mutex_unlock(&fe->card->mutex);
snd_soc_card_mutex_unlock(fe->card);
return 0;
@ -201,7 +201,7 @@ out:
dpcm_path_put(&list);
be_err:
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
mutex_unlock(&fe->card->mutex);
snd_soc_card_mutex_unlock(fe->card);
return ret;
}
@ -212,7 +212,7 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream)
struct snd_soc_dpcm *dpcm;
int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
snd_soc_card_mutex_lock(fe->card);
snd_soc_dpcm_mutex_lock(fe);
snd_soc_runtime_deactivate(fe, stream);
@ -244,7 +244,7 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream)
snd_soc_dai_compr_shutdown(cpu_dai, cstream, 0);
mutex_unlock(&fe->card->mutex);
snd_soc_card_mutex_unlock(fe->card);
return 0;
}
@ -291,7 +291,7 @@ static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
cmd == SND_COMPR_TRIGGER_DRAIN)
return snd_soc_component_compr_trigger(cstream, cmd);
mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
snd_soc_card_mutex_lock(fe->card);
ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
if (ret < 0)
@ -322,7 +322,7 @@ static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
out:
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
mutex_unlock(&fe->card->mutex);
snd_soc_card_mutex_unlock(fe->card);
return ret;
}
@ -380,7 +380,7 @@ static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
int ret;
mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
snd_soc_card_mutex_lock(fe->card);
/*
* Create an empty hw_params for the BE as the machine driver must
@ -418,7 +418,7 @@ static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
out:
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
mutex_unlock(&fe->card->mutex);
snd_soc_card_mutex_unlock(fe->card);
return ret;
}

4
sound/soc/soc-core.c
View file

@ -1936,7 +1936,7 @@ static int snd_soc_bind_card(struct snd_soc_card *card)
int ret, i;
mutex_lock(&client_mutex);
mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
snd_soc_card_mutex_lock_root(card);
snd_soc_dapm_init(&card->dapm, card, NULL);
@ -2093,7 +2093,7 @@ probe_end:
if (ret < 0)
soc_cleanup_card_resources(card);
mutex_unlock(&card->mutex);
snd_soc_card_mutex_unlock(card);
mutex_unlock(&client_mutex);
return ret;