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| author | Keyon Jie <yang.jie@linux.intel.com> | 2019-10-25 17:41:17 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-10-28 14:45:33 +0000 |
| commit | 0b50b3b1c3bc2a2c9eeab418b3de3e60e0530cf4 (patch) | |
| tree | 0870669fceacc91436882c7d1d0a4cedab8de54c /sound/soc/sof/pm.c | |
| parent | 4cd933abd4820da7eefe672ff439b32d199a07be (diff) | |
| download | lwn-0b50b3b1c3bc2a2c9eeab418b3de3e60e0530cf4.tar.gz lwn-0b50b3b1c3bc2a2c9eeab418b3de3e60e0530cf4.zip | |
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>
Diffstat (limited to 'sound/soc/sof/pm.c')
| -rw-r--r-- | sound/soc/sof/pm.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/sound/soc/sof/pm.c b/sound/soc/sof/pm.c index 584241e9734a..99e4e6ffff74 100644 --- a/sound/soc/sof/pm.c +++ b/sound/soc/sof/pm.c @@ -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); |