MLK-23560-2: ASoC: SOF: Enable PM support

We need to provide PM macros in order for the SOF core
to suspend/resume the DSP.

PM support on the DSP side is quite limited and we are mostly
doing PM for ARM core.

Without this patch DSP won't be restarted after a resume causing
SOF driver calls to time out.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/sound/soc/sof/imx/imx8.c b/sound/soc/sof/imx/imx8.c
index d9d47972908b..8e07ee7a1f33 100644
--- a/sound/soc/sof/imx/imx8.c
+++ b/sound/soc/sof/imx/imx8.c
@@ -378,6 +378,18 @@ static int imx8_ipc_pcm_params(struct snd_sof_dev *sdev,
 	return 0;
 }
 
+int imx8_dsp_resume(struct snd_sof_dev *sdev)
+{
+	/* nothing to do for now */
+	return 0;
+}
+
+int imx8_dsp_suspend(struct snd_sof_dev *sdev)
+{
+	/* nothing to do for now */
+	return 0;
+}
+
 static struct snd_soc_dai_driver imx8_dai[] = {
 {
 	.name = "esai-port",
@@ -414,6 +426,12 @@ struct snd_sof_dsp_ops sof_imx8_ops = {
 	/* DAI drivers */
 	.drv = imx8_dai,
 	.num_drv = 1, /* we have only 1 ESAI interface on i.MX8 */
+
+	/* PM */
+	.suspend		= imx8_dsp_suspend,
+	.resume			= imx8_dsp_resume,
+	.runtime_suspend	= imx8_dsp_suspend,
+	.runtime_resume		= imx8_dsp_resume,
 };
 EXPORT_SYMBOL(sof_imx8_ops);
 
@@ -447,6 +465,12 @@ struct snd_sof_dsp_ops sof_imx8x_ops = {
 	/* DAI drivers */
 	.drv = imx8_dai,
 	.num_drv = 1, /* we have only 1 ESAI interface on i.MX8 */
+
+	/* PM */
+	.suspend		= imx8_dsp_suspend,
+	.resume			= imx8_dsp_resume,
+	.runtime_suspend	= imx8_dsp_suspend,
+	.runtime_resume		= imx8_dsp_resume,
 };
 EXPORT_SYMBOL(sof_imx8x_ops);