Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/kernel/arch/arm/plat-samsung/wakeup-mask.c b/kernel/arch/arm/plat-samsung/wakeup-mask.c
new file mode 100644
index 000000000..20c3d9117
--- /dev/null
+++ b/kernel/arch/arm/plat-samsung/wakeup-mask.c
@@ -0,0 +1,47 @@
+/* arch/arm/plat-samsung/wakeup-mask.c
+ *
+ * Copyright 2010 Ben Dooks <ben-linux@fluff.org>
+ *
+ * Support for wakeup mask interrupts on newer SoCs
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#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 <plat/wakeup-mask.h>
+#include <plat/pm.h>
+
+void samsung_sync_wakemask(void __iomem *reg,
+			   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);
+}