HACK: firmware: raspberrypi: Prevent suspend to idle

0001-HACK-firmware-raspberrypi-Prevent-suspend-to-idle.patch

From 5b1e5b66ec4f1e53d0abe6ca44e6f79499bfd855 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <[email protected]>
Date: Sun, 8 Sep 2024 19:08:30 +0200
Subject: [PATCH] HACK: firmware: raspberrypi: Prevent suspend to idle

This ugly hack prevents suspend to idle on all Raspberry Pi
boards. This might be a temporary solutions for distributions
which needs to enable suspend to idle in general, but prevent
it for the Raspberry Pi which doesn't support it yet.

Signed-off-by: Stefan Wahren <[email protected]>
---
 drivers/firmware/raspberrypi.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
index 18cc34987108..d0569658af88 100644
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -399,10 +399,24 @@ struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(devm_rpi_firmware_get);
 
+static int rpi_firmware_suspend(struct device *dev)
+{
+	return -EOPNOTSUPP;
+}
+
+static int rpi_firmware_resume(struct device *dev)
+{
+	return -EOPNOTSUPP;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(rpi_firmware_dev_pm_ops, rpi_firmware_suspend,
+				rpi_firmware_resume);
+
 static struct platform_driver rpi_firmware_driver = {
 	.driver = {
 		.name = "raspberrypi-firmware",
 		.of_match_table = rpi_firmware_of_match,
+		.pm = pm_ptr(&rpi_firmware_dev_pm_ops),
 	},
 	.probe		= rpi_firmware_probe,
 	.shutdown	= rpi_firmware_shutdown,
-- 
2.34.1