From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 arch/frv/kernel/pm-mb93093.c | 65 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 arch/frv/kernel/pm-mb93093.c

(limited to 'arch/frv/kernel/pm-mb93093.c')

diff --git a/arch/frv/kernel/pm-mb93093.c b/arch/frv/kernel/pm-mb93093.c
new file mode 100644
index 00000000..eaa7b582
--- /dev/null
+++ b/arch/frv/kernel/pm-mb93093.c
@@ -0,0 +1,65 @@
+/*
+ * FR-V MB93093 Power Management Routines
+ *
+ * Copyright (c) 2004 Red Hat, Inc.
+ *
+ * Written by: msalter@redhat.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/pm.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/sysctl.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <asm/uaccess.h>
+
+#include <asm/mb86943a.h>
+
+#include "local.h"
+
+static unsigned long imask;
+/*
+ * Setup interrupt masks, etc to enable wakeup by power switch
+ */
+static void mb93093_power_switch_setup(void)
+{
+	/* mask all but FPGA interrupt sources. */
+	imask = *(volatile unsigned long *)0xfeff9820;
+	*(volatile unsigned long *)0xfeff9820 = ~(1 << (IRQ_XIRQ2_LEVEL + 16)) & 0xfffe0000;
+}
+
+/*
+ * Cleanup interrupt masks, etc after wakeup by power switch
+ */
+static void mb93093_power_switch_cleanup(void)
+{
+	*(volatile unsigned long *)0xfeff9820 = imask;
+}
+
+/*
+ * Return non-zero if wakeup irq was caused by power switch
+ */
+static int mb93093_power_switch_check(void)
+{
+	return 1;
+}
+
+/*
+ * Initialize power interface
+ */
+static int __init mb93093_pm_init(void)
+{
+	__power_switch_wake_setup = mb93093_power_switch_setup;
+	__power_switch_wake_check = mb93093_power_switch_check;
+	__power_switch_wake_cleanup = mb93093_power_switch_cleanup;
+	return 0;
+}
+
+__initcall(mb93093_pm_init);
+
-- 
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