From: Marcin Rajwa marcin.rajwa@linux.intel.com
This patch adds a snd_sof_dsp_power_down_notify() method which aims to prepare the DSP for the upcoming power down. This new function make use of SOF_IPC_PM_CTX_SAVE message.
Signed-off-by: Marcin Rajwa marcin.rajwa@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Signed-off-by: Kai Vehmanen kai.vehmanen@linux.intel.com --- sound/soc/sof/pm.c | 9 +++++++++ sound/soc/sof/sof-priv.h | 1 + 2 files changed, 10 insertions(+)
diff --git a/sound/soc/sof/pm.c b/sound/soc/sof/pm.c index 119e4d644ef4..5e804a7728f5 100644 --- a/sound/soc/sof/pm.c +++ b/sound/soc/sof/pm.c @@ -256,6 +256,15 @@ static int sof_suspend(struct device *dev, bool runtime_suspend) return ret; }
+int snd_sof_dsp_power_down_notify(struct snd_sof_dev *sdev) +{ + /* Notify DSP of upcoming power down */ + if (sof_ops(sdev)->remove) + return sof_send_pm_ctx_ipc(sdev, SOF_IPC_PM_CTX_SAVE); + + return 0; +} + int snd_sof_runtime_suspend(struct device *dev) { return sof_suspend(dev, true); diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index a34dbae9f971..3ed39b887214 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -453,6 +453,7 @@ 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_dsp_power_down_notify(struct snd_sof_dev *sdev); int snd_sof_prepare(struct device *dev); void snd_sof_complete(struct device *dev);