[PATCH 2/4] ASoC: SOF: mediatek: mt8195 add shutdown callback

[Pierre-Louis Bossart]

From: YC Hung <yc.hung at mediatek.com>

Add mt8195 shutdown callback function implementation to ensure that
shutdown flow is called to shutdown dsp core, disable adsp clock, and
power off dsp sram correctly during reboot flow.

Signed-off-by: YC Hung <yc.hung at mediatek.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi at linux.intel.com>
---
 sound/soc/sof/mediatek/mt8195/mt8195.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sound/soc/sof/mediatek/mt8195/mt8195.c b/sound/soc/sof/mediatek/mt8195/mt8195.c
index 3ab12f352935..b5e2fd72acfb 100644
--- a/sound/soc/sof/mediatek/mt8195/mt8195.c
+++ b/sound/soc/sof/mediatek/mt8195/mt8195.c
@@ -302,6 +302,11 @@ static int mt8195_dsp_probe(struct snd_sof_dev *sdev)
 	return ret;
 }
 
+static int mt8195_dsp_shutdown(struct snd_sof_dev *sdev)
+{
+	return snd_sof_suspend(sdev->dev);
+}
+
 static int mt8195_dsp_remove(struct snd_sof_dev *sdev)
 {
 	struct platform_device *pdev = container_of(sdev->dev, struct platform_device, dev);
@@ -392,6 +397,7 @@ static const struct snd_sof_dsp_ops sof_mt8195_ops = {
 	/* probe and remove */
 	.probe		= mt8195_dsp_probe,
 	.remove		= mt8195_dsp_remove,
+	.shutdown	= mt8195_dsp_shutdown,
 
 	/* DSP core boot */
 	.run		= mt8195_run,
@@ -451,6 +457,7 @@ MODULE_DEVICE_TABLE(of, sof_of_mt8195_ids);
 static struct platform_driver snd_sof_of_mt8195_driver = {
 	.probe = sof_of_probe,
 	.remove = sof_of_remove,
+	.shutdown = sof_of_shutdown,
 	.driver = {
 	.name = "sof-audio-of-mt8195",
 		.pm = &sof_of_pm,
-- 
2.30.2