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ASoC: soc-pcm: add soc_pcm_clean() and call it from soc_pcm_open/close()

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soc_pcm_open() does rollback when failed (A),
but, it is almost same as soc_pcm_close().

	static int soc_pcm_open(xxx)
	{
		...
		if (ret < 0)
			goto xxx_err;
		...
		return 0;

 ^	config_err:
 |		...
 |	rtd_startup_err:
(A)		...
 |	component_err:
 |		...
 v		return ret;
	}

The difference is
soc_pcm_close() is for all dai/component/substream,
rollback        is for succeeded part only.

This kind of duplicated code can be a hotbed of bugs,
thus, we want to share soc_pcm_close() and rollback.

Now, soc_pcm_open/close() are handling
	1) snd_soc_dai_startup/shutdown()
	2) snd_soc_link_startup/shutdown()
	3) snd_soc_component_module_get/put()
	4) snd_soc_component_open/close()
	5) pm_runtime_put/get()

Now, 1) to 5) are handled.
This patch adds new soc_pcm_clean() and call it from
soc_pcm_open() as rollback, and from soc_pcm_close() as
normal close handler.

One note here is that it don't need to call snd_soc_runtime_deactivate()
when rollback case, because it will be called without
snd_soc_runtime_activate().
It also don't need to call snd_soc_dapm_stream_stop() when rollback case.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87ft72bwn4.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2020-09-28 09:01:24 +09:00 committed by Mark Brown
parent 939a5cfb2a
commit 140a4532cd
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 30 additions and 39 deletions
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69
sound/soc/soc-pcm.c
View File

@ -651,12 +651,7 @@ static int soc_pcm_components_close(struct snd_pcm_substream *substream,
return ret;
}
/*
* Called by ALSA when a PCM substream is closed. Private data can be
* freed here. The cpu DAI, codec DAI, machine and components are also
* shutdown.
*/
static int soc_pcm_close(struct snd_pcm_substream *substream)
static int soc_pcm_clean(struct snd_pcm_substream *substream, int rollback)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_component *component;
@ -665,20 +660,22 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
snd_soc_runtime_deactivate(rtd, substream->stream);
if (!rollback)
snd_soc_runtime_deactivate(rtd, substream->stream);
for_each_rtd_dais(rtd, i, dai)
snd_soc_dai_shutdown(dai, substream, 0);
snd_soc_dai_shutdown(dai, substream, rollback);
snd_soc_link_shutdown(substream, 0);
snd_soc_link_shutdown(substream, rollback);
soc_pcm_components_close(substream, 0);
soc_pcm_components_close(substream, rollback);
snd_soc_dapm_stream_stop(rtd, substream->stream);
if (!rollback)
snd_soc_dapm_stream_stop(rtd, substream->stream);
mutex_unlock(&rtd->card->pcm_mutex);
snd_soc_pcm_component_pm_runtime_put(rtd, substream, 0);
snd_soc_pcm_component_pm_runtime_put(rtd, substream, rollback);
for_each_rtd_components(rtd, i, component)
if (!snd_soc_component_active(component))
@ -687,6 +684,16 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
return 0;
}
/*
* Called by ALSA when a PCM substream is closed. Private data can be
* freed here. The cpu DAI, codec DAI, machine and components are also
* shutdown.
*/
static int soc_pcm_close(struct snd_pcm_substream *substream)
{
return soc_pcm_clean(substream, 0);
}
/*
* Called by ALSA when a PCM substream is opened, the runtime->hw record is
* then initialized and any private data can be allocated. This also calls
@ -707,17 +714,17 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
ret = snd_soc_pcm_component_pm_runtime_get(rtd, substream);
if (ret < 0)
goto pm_err;
goto err;
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
ret = soc_pcm_components_open(substream);
if (ret < 0)
goto component_err;
goto err;
ret = snd_soc_link_startup(substream);
if (ret < 0)
goto rtd_startup_err;
goto err;
/* startup the audio subsystem */
for_each_rtd_dais(rtd, i, dai) {
@ -726,7 +733,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
dev_err(dai->dev,
"ASoC: can't open DAI %s: %d\n",
dai->name, ret);
goto config_err;
goto err;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
@ -755,18 +762,18 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
if (!runtime->hw.rates) {
printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n",
codec_dai_name, cpu_dai_name);
goto config_err;
goto err;
}
if (!runtime->hw.formats) {
printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n",
codec_dai_name, cpu_dai_name);
goto config_err;
goto err;
}
if (!runtime->hw.channels_min || !runtime->hw.channels_max ||
runtime->hw.channels_min > runtime->hw.channels_max) {
printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n",
codec_dai_name, cpu_dai_name);
goto config_err;
goto err;
}
soc_pcm_apply_msb(substream);
@ -776,7 +783,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
if (snd_soc_dai_active(dai)) {
ret = soc_pcm_apply_symmetry(substream, dai);
if (ret != 0)
goto config_err;
goto err;
}
}
@ -787,29 +794,13 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
runtime->hw.channels_max);
pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min,
runtime->hw.rate_max);
dynamic:
snd_soc_runtime_activate(rtd, substream->stream);
err:
mutex_unlock(&rtd->card->pcm_mutex);
return 0;
config_err:
for_each_rtd_dais_rollback(rtd, i, dai)
snd_soc_dai_shutdown(dai, substream, 1);
snd_soc_link_shutdown(substream, 1);
rtd_startup_err:
soc_pcm_components_close(substream, 1);
component_err:
mutex_unlock(&rtd->card->pcm_mutex);
pm_err:
snd_soc_pcm_component_pm_runtime_put(rtd, substream, 1);
for_each_rtd_components(rtd, i, component)
if (!snd_soc_component_active(component))
pinctrl_pm_select_sleep_state(component->dev);
if (ret < 0)
soc_pcm_clean(substream, 1);
return ret;
}