From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 11 Apr 2024 10:27:49 +0200
Subject: Adding upstream version 6.6.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 drivers/power/reset/msm-poweroff.c | 67 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 drivers/power/reset/msm-poweroff.c

(limited to 'drivers/power/reset/msm-poweroff.c')

diff --git a/drivers/power/reset/msm-poweroff.c b/drivers/power/reset/msm-poweroff.c
new file mode 100644
index 0000000000..b9a401bd28
--- /dev/null
+++ b/drivers/power/reset/msm-poweroff.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/pm.h>
+
+static void __iomem *msm_ps_hold;
+static int deassert_pshold(struct notifier_block *nb, unsigned long action,
+			   void *data)
+{
+	writel(0, msm_ps_hold);
+	mdelay(10000);
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block restart_nb = {
+	.notifier_call = deassert_pshold,
+	.priority = 128,
+};
+
+static void do_msm_poweroff(void)
+{
+	deassert_pshold(&restart_nb, 0, NULL);
+}
+
+static int msm_restart_probe(struct platform_device *pdev)
+{
+	msm_ps_hold = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(msm_ps_hold))
+		return PTR_ERR(msm_ps_hold);
+
+	register_restart_handler(&restart_nb);
+
+	pm_power_off = do_msm_poweroff;
+
+	return 0;
+}
+
+static const struct of_device_id of_msm_restart_match[] = {
+	{ .compatible = "qcom,pshold", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, of_msm_restart_match);
+
+static struct platform_driver msm_restart_driver = {
+	.probe = msm_restart_probe,
+	.driver = {
+		.name = "msm-restart",
+		.of_match_table = of_match_ptr(of_msm_restart_match),
+	},
+};
+
+static int __init msm_restart_init(void)
+{
+	return platform_driver_register(&msm_restart_driver);
+}
+device_initcall(msm_restart_init);
-- 
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