From: Keyon Jie <yang.jie@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
sound/soc/sof/pm.c | 23 +++++++++++++++++++++++
sound/soc/sof/sof-priv.h | 2 ++
2 files changed, 25 insertions(+)
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);
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index c2541d020bde..6408ac88a3e5 100644
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -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);
--
2.20.1
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