2023-12-06 16:04:30

by Rivera-Matos, Ricardo

[permalink] [raw]
Subject: [PATCH 2/3] ASoC: cs35l45: Prevent IRQ handling when suspending/resuming

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 <[email protected]>
Acked-by: Charles Keepax <[email protected]>
---
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 4f4df166f5f0..28f76fccf277 100644
--- a/sound/soc/codecs/cs35l45.c
+++ b/sound/soc/codecs/cs35l45.c
@@ -1026,6 +1026,46 @@ 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;
@@ -1468,6 +1508,9 @@ 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");
--
2.34.1