linux-kernel - [PATCH AUTOSEL 6.6 09/39] ASoC: cs35l45: Prevent IRQ handling when suspending/resuming

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Message-ID: <20231226002021.4776-9-sashal@kernel.org>
Date: Mon, 25 Dec 2023 19:18:59 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Ricardo Rivera-Matos <rriveram@...nsource.cirrus.com>,
	Charles Keepax <ckeepax@...nsource.cirrus.com>,
	Mark Brown <broonie@...nel.org>,
	Sasha Levin <sashal@...nel.org>,
	james.schulman@...rus.com,
	david.rhodes@...rus.com,
	rf@...nsource.cirrus.com,
	lgirdwood@...il.com,
	perex@...ex.cz,
	tiwai@...e.com,
	alsa-devel@...a-project.org,
	patches@...nsource.cirrus.com,
	linux-sound@...r.kernel.org
Subject: [PATCH AUTOSEL 6.6 09/39] ASoC: cs35l45: Prevent IRQ handling when suspending/resuming

From: Ricardo Rivera-Matos <rriveram@...nsource.cirrus.com>

[ Upstream commit c3c8b088949b9ccb88da2f84d3c3cc06580a6a43 ]

Use the SYSTEM_SLEEP_PM_OPS handlers to prevent handling an IRQ
when the system is in the middle of suspending or resuming.

Signed-off-by: Ricardo Rivera-Matos <rriveram@...nsource.cirrus.com>
Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
Link: https://lore.kernel.org/r/20231206160318.1255034-3-rriveram@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/codecs/cs35l45.c | 43 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/sound/soc/codecs/cs35l45.c b/sound/soc/codecs/cs35l45.c
index b1d0f2c8f2cad..310747b7689d3 100644
--- a/sound/soc/codecs/cs35l45.c
+++ b/sound/soc/codecs/cs35l45.c
@@ -854,6 +854,46 @@ static int cs35l45_runtime_resume(struct device *dev)
 	return ret;
 }
 
+static int cs35l45_sys_suspend(struct device *dev)
+{
+	struct cs35l45_private *cs35l45 = dev_get_drvdata(dev);
+
+	dev_dbg(cs35l45->dev, "System suspend, disabling IRQ\n");
+	disable_irq(cs35l45->irq);
+
+	return 0;
+}
+
+static int cs35l45_sys_suspend_noirq(struct device *dev)
+{
+	struct cs35l45_private *cs35l45 = dev_get_drvdata(dev);
+
+	dev_dbg(cs35l45->dev, "Late system suspend, reenabling IRQ\n");
+	enable_irq(cs35l45->irq);
+
+	return 0;
+}
+
+static int cs35l45_sys_resume_noirq(struct device *dev)
+{
+	struct cs35l45_private *cs35l45 = dev_get_drvdata(dev);
+
+	dev_dbg(cs35l45->dev, "Early system resume, disabling IRQ\n");
+	disable_irq(cs35l45->irq);
+
+	return 0;
+}
+
+static int cs35l45_sys_resume(struct device *dev)
+{
+	struct cs35l45_private *cs35l45 = dev_get_drvdata(dev);
+
+	dev_dbg(cs35l45->dev, "System resume, reenabling IRQ\n");
+	enable_irq(cs35l45->irq);
+
+	return 0;
+}
+
 static int cs35l45_apply_property_config(struct cs35l45_private *cs35l45)
 {
 	struct device_node *node = cs35l45->dev->of_node;
@@ -1291,6 +1331,9 @@ EXPORT_SYMBOL_NS_GPL(cs35l45_remove, SND_SOC_CS35L45);
 
 EXPORT_GPL_DEV_PM_OPS(cs35l45_pm_ops) = {
 	RUNTIME_PM_OPS(cs35l45_runtime_suspend, cs35l45_runtime_resume, NULL)
+
+	SYSTEM_SLEEP_PM_OPS(cs35l45_sys_suspend, cs35l45_sys_resume)
+	NOIRQ_SYSTEM_SLEEP_PM_OPS(cs35l45_sys_suspend_noirq, cs35l45_sys_resume_noirq)
 };
 
 MODULE_DESCRIPTION("ASoC CS35L45 driver");
-- 
2.43.0