From: Daniel Baluta daniel.baluta@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@linux.intel.com Reviewed-by: Paul Olaru paul.olaru@nxp.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Daniel Baluta daniel.baluta@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)