[alsa-devel] [PATCH 17/26] ASoC: SOF: PM: add helpers for setting D0 substate for ADSP

[Pierre-Louis Bossart]

From: Keyon Jie <yang.jie at linux.intel.com>

Add snd_sof_set_d0_substate() helper for setting ADSP to a specific D0
substate, it will call into the platform specific implementation, and
update the d0_substate at success.

Signed-off-by: Keyon Jie <yang.jie at linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
 sound/soc/sof/pm.c       | 17 +++++++++++++++++
 sound/soc/sof/sof-priv.h |  2 ++
 2 files changed, 19 insertions(+)

diff --git a/sound/soc/sof/pm.c b/sound/soc/sof/pm.c
index ac900fb3379e..584241e9734a 100644
--- a/sound/soc/sof/pm.c
+++ b/sound/soc/sof/pm.c
@@ -411,6 +411,23 @@ int snd_sof_runtime_resume(struct device *dev)
 }
 EXPORT_SYMBOL(snd_sof_runtime_resume);
 
+int snd_sof_set_d0_substate(struct snd_sof_dev *sdev,
+			    enum sof_d0_substate d0_substate)
+{
+	int ret;
+
+	/* do platform specific set_state */
+	ret = snd_sof_dsp_set_power_state(sdev, d0_substate);
+	if (ret < 0)
+		return ret;
+
+	/* update dsp D0 sub-state */
+	sdev->d0_substate = d0_substate;
+
+	return 0;
+}
+EXPORT_SYMBOL(snd_sof_set_d0_substate);
+
 int snd_sof_resume(struct device *dev)
 {
 	return sof_resume(dev, false);
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index 7a21a45d3635..2231c673c678 100644
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -485,6 +485,8 @@ 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_set_d0_substate(struct snd_sof_dev *sdev,
+			    enum sof_d0_substate d0_substate);
 
 void snd_sof_new_platform_drv(struct snd_sof_dev *sdev);
 
-- 
2.20.1