linux-kernel - [PATCH 5.18 156/158] ASoC: SOF: pm: add definitions for S4 and S5 states

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Date:   Wed, 27 Jul 2022 18:13:40 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Péter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH 5.18 156/158] ASoC: SOF: pm: add definitions for S4 and S5 states

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

commit 9d2d462713384538477703e68577b05131c7d97d upstream.

We currently don't have a means to differentiate between S3, S4 and
S5. Add definitions so that we have select different code paths
depending on the target state in follow-up patches.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@...ux.intel.com>
Link: https://lore.kernel.org/r/20220616201818.130802-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/soc/sof/pm.c       |    9 +++++++++
 sound/soc/sof/sof-priv.h |    2 ++
 2 files changed, 11 insertions(+)

--- a/sound/soc/sof/pm.c
+++ b/sound/soc/sof/pm.c
@@ -23,6 +23,9 @@ static u32 snd_sof_dsp_power_target(stru
 	u32 target_dsp_state;
 
 	switch (sdev->system_suspend_target) {
+	case SOF_SUSPEND_S5:
+	case SOF_SUSPEND_S4:
+		/* DSP should be in D3 if the system is suspending to S3+ */
 	case SOF_SUSPEND_S3:
 		/* DSP should be in D3 if the system is suspending to S3 */
 		target_dsp_state = SOF_DSP_PM_D3;
@@ -336,6 +339,12 @@ int snd_sof_prepare(struct device *dev)
 	case ACPI_STATE_S3:
 		sdev->system_suspend_target = SOF_SUSPEND_S3;
 		break;
+	case ACPI_STATE_S4:
+		sdev->system_suspend_target = SOF_SUSPEND_S4;
+		break;
+	case ACPI_STATE_S5:
+		sdev->system_suspend_target = SOF_SUSPEND_S5;
+		break;
 	default:
 		break;
 	}
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -85,6 +85,8 @@ enum sof_system_suspend_state {
 	SOF_SUSPEND_NONE = 0,
 	SOF_SUSPEND_S0IX,
 	SOF_SUSPEND_S3,
+	SOF_SUSPEND_S4,
+	SOF_SUSPEND_S5,
 };
 
 enum sof_dfsentry_type {