Unverified Commit 4137f4b6 authored by Cezary Rojewski's avatar Cezary Rojewski Committed by Mark Brown
Browse files

ASoC: compress: Add pm_runtime support 



For some devices, components need to be powered-up before stream startup
sequence commences. Update soc_compr_open to provide such functionality.
Based on soc_pcm_open. Adjust soc_compr_free accordingly to power down
components once compress stream is closed.

Signed-off-by: default avatarCezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20191217095851.19629-7-cezary.rojewski@intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent ae91a189

sound/soc/soc-compress.c

+28 −1
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <sound/soc.h>

#include <sound/initval.h>

#include <sound/soc-dpcm.h>

#include <linux/pm_runtime.h>



static int soc_compr_components_open(struct snd_compr_stream *cstream,

				     struct snd_soc_component **last)
@@ -72,10 +73,20 @@ static int soc_compr_components_free(struct snd_compr_stream *cstream, 
static int soc_compr_open(struct snd_compr_stream *cstream)

{

	struct snd_soc_pcm_runtime *rtd = cstream->private_data;

	struct snd_soc_component *component;

	struct snd_soc_component *component, *save = NULL;

	struct snd_soc_rtdcom_list *rtdcom;

	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

	int ret;



	for_each_rtd_components(rtd, rtdcom, component) {

		ret = pm_runtime_get_sync(component->dev);

		if (ret < 0 && ret != -EACCES) {

			pm_runtime_put_noidle(component->dev);

			save = component;

			goto pm_err;

		}

	}



	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);



	if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
@@ -115,6 +126,14 @@ machine_err: 
		cpu_dai->driver->cops->shutdown(cstream, cpu_dai);

out:

	mutex_unlock(&rtd->card->pcm_mutex);

pm_err:

	for_each_rtd_components(rtd, rtdcom, component) {

		if (component == save)

			break;

		pm_runtime_mark_last_busy(component->dev);

		pm_runtime_put_autosuspend(component->dev);

	}



	return ret;

}
@@ -239,6 +258,8 @@ static void close_delayed_work(struct snd_soc_pcm_runtime *rtd) 
static int soc_compr_free(struct snd_compr_stream *cstream)

{

	struct snd_soc_pcm_runtime *rtd = cstream->private_data;

	struct snd_soc_component *component;

	struct snd_soc_rtdcom_list *rtdcom;

	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

	struct snd_soc_dai *codec_dai = rtd->codec_dai;

	int stream;
@@ -287,6 +308,12 @@ static int soc_compr_free(struct snd_compr_stream *cstream) 
	}



	mutex_unlock(&rtd->card->pcm_mutex);



	for_each_rtd_components(rtd, rtdcom, component) {

		pm_runtime_mark_last_busy(component->dev);

		pm_runtime_put_autosuspend(component->dev);

	}



	return 0;

}

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