[PATCH 1/2] ASoC: SOF: Activate runtime PM with SOF OF device

[Daniel Baluta]

From: Daniel Baluta <daniel.baluta at nxp.com>

SOF boots the DSP at probe and keeps it up all the time.
With this change, after booting if no one is using the DSP
the SOF core will turn off the DSP to save power.

Reviewed-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
Reviewed-by: Paul Olaru <paul.olaru at nxp.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Signed-off-by: Daniel Baluta <daniel.baluta at nxp.com>
---
 sound/soc/sof/sof-of-dev.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/sof/sof-of-dev.c b/sound/soc/sof/sof-of-dev.c
index f492c5dfa659..de9acc0e33cb 100644
--- a/sound/soc/sof/sof-of-dev.c
+++ b/sound/soc/sof/sof-of-dev.c
@@ -56,7 +56,11 @@ static void sof_of_probe_complete(struct device *dev)
 	/* allow runtime_pm */
 	pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
 	pm_runtime_use_autosuspend(dev);
+	pm_runtime_set_active(dev);
 	pm_runtime_enable(dev);
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
 }
 
 static int sof_of_probe(struct platform_device *pdev)
-- 
2.17.1