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ASoC: SOF: PM: implement prepare/complete callbacks 

Implement the prepare() and complete() callbacks for power management,
initialize s0_suspend flag at prepare(), and reset it at complete().

Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191025224122.7718-22-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Keyon Jie 2019-10-25 17:41:17 -05:00 committed by Mark Brown
parent 4cd933abd4
commit 0b50b3b1c3
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 25 additions and 0 deletions
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23
sound/soc/sof/pm.c
View File

@ -439,3 +439,26 @@ int snd_sof_suspend(struct device *dev)
return sof_suspend(dev, false);
}
EXPORT_SYMBOL(snd_sof_suspend);
int snd_sof_prepare(struct device *dev)
{
struct snd_sof_dev *sdev = dev_get_drvdata(dev);
#if defined(CONFIG_ACPI)
sdev->s0_suspend = acpi_target_system_state() == ACPI_STATE_S0;
#else
/* will suspend to S3 by default */
sdev->s0_suspend = false;
#endif
return 0;
}
EXPORT_SYMBOL(snd_sof_prepare);
void snd_sof_complete(struct device *dev)
{
struct snd_sof_dev *sdev = dev_get_drvdata(dev);
sdev->s0_suspend = false;
}
EXPORT_SYMBOL(snd_sof_complete);

2
sound/soc/sof/sof-priv.h
View File

@ -492,6 +492,8 @@ int snd_sof_runtime_resume(struct device *dev);
int snd_sof_runtime_idle(struct device *dev);
int snd_sof_resume(struct device *dev);
int snd_sof_suspend(struct device *dev);
int snd_sof_prepare(struct device *dev);
void snd_sof_complete(struct device *dev);
int snd_sof_set_d0_substate(struct snd_sof_dev *sdev,
enum sof_d0_substate d0_substate);