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>
---
 arch/arm/mach-s3c/wakeup-mask.c | 42 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 arch/arm/mach-s3c/wakeup-mask.c

(limited to 'arch/arm/mach-s3c/wakeup-mask.c')

diff --git a/arch/arm/mach-s3c/wakeup-mask.c b/arch/arm/mach-s3c/wakeup-mask.c
new file mode 100644
index 0000000000..b490e7527c
--- /dev/null
+++ b/arch/arm/mach-s3c/wakeup-mask.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright 2010 Ben Dooks <ben-linux@fluff.org>
+//
+// Support for wakeup mask interrupts on newer SoCs
+
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+
+#include "wakeup-mask.h"
+#include "pm.h"
+
+void samsung_sync_wakemask(void __iomem *reg,
+			   const struct samsung_wakeup_mask *mask, int nr_mask)
+{
+	struct irq_data *data;
+	u32 val;
+
+	val = __raw_readl(reg);
+
+	for (; nr_mask > 0; nr_mask--, mask++) {
+		if (mask->irq == NO_WAKEUP_IRQ) {
+			val |= mask->bit;
+			continue;
+		}
+
+		data = irq_get_irq_data(mask->irq);
+
+		/* bit of a liberty to read this directly from irq_data. */
+		if (irqd_is_wakeup_set(data))
+			val &= ~mask->bit;
+		else
+			val |= mask->bit;
+	}
+
+	printk(KERN_INFO "wakemask %08x => %08x\n", __raw_readl(reg), val);
+	__raw_writel(val, reg);
+}
-- 
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