From 5cfe477f6a3f9a4d9b2906d442964f2115b0403f Mon Sep 17 00:00:00 2001
From: YC Hung <yc.hung@mediatek.com>
Date: Wed, 6 Apr 2022 14:40:46 -0500
Subject: [PATCH] ASoC: SOF: mediatek: mt8195 add shutdown callback
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Git-commit: 5cfe477f6a3f9a4d9b2906d442964f2115b0403f
Patch-mainline: v5.19-rc1
References: jsc#PED-850

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@mediatek.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20220406194048.289787-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 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,
-- 
2.35.3