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ASoC: compress: Add pm_runtime support

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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: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20191217095851.19629-7-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cezary Rojewski 2019-12-17 10:58:50 +01:00 committed by Mark Brown
parent ae91a189d2
commit 4137f4b65d
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 28 additions and 1 deletions
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29
sound/soc/soc-compress.c
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@ -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;
}