From 3541aef1b83fa3a13e9c4ecc0919156ff2ec9c22 Mon Sep 17 00:00:00 2001 From: Marcin Rajwa Date: Fri, 15 May 2020 16:59:52 +0300 Subject: ASoC: SOF: add a power_down_notify method 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 Signed-off-by: Kai Vehmanen Reviewed-by: Ranjani Sridharan Link: https://lore.kernel.org/r/20200515135958.17511-3-kai.vehmanen@linux.intel.com Signed-off-by: Mark Brown --- sound/soc/sof/pm.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'sound/soc/sof/pm.c') 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 @@ 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); -- cgit v1.2.3