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, 55 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-pxa/clock-pxa2xx.c b/kernel/arch/arm/mach-pxa/clock-pxa2xx.c
new file mode 100644
index 000000000..9ee2ad6a0
--- /dev/null
+++ b/kernel/arch/arm/mach-pxa/clock-pxa2xx.c
@@ -0,0 +1,55 @@
+/*
+ * linux/arch/arm/mach-pxa/clock-pxa2xx.c
+ *
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/syscore_ops.h>
+
+#include <mach/pxa2xx-regs.h>
+
+#include "clock.h"
+
+void clk_pxa2xx_cken_enable(struct clk *clk)
+{
+	CKEN |= 1 << clk->cken;
+}
+
+void clk_pxa2xx_cken_disable(struct clk *clk)
+{
+	CKEN &= ~(1 << clk->cken);
+}
+
+const struct clkops clk_pxa2xx_cken_ops = {
+	.enable		= clk_pxa2xx_cken_enable,
+	.disable	= clk_pxa2xx_cken_disable,
+};
+
+#ifdef CONFIG_PM
+static uint32_t saved_cken;
+
+static int pxa2xx_clock_suspend(void)
+{
+	saved_cken = CKEN;
+	return 0;
+}
+
+static void pxa2xx_clock_resume(void)
+{
+	CKEN = saved_cken;
+}
+#else
+#define pxa2xx_clock_suspend	NULL
+#define pxa2xx_clock_resume	NULL
+#endif
+
+struct syscore_ops pxa2xx_clock_syscore_ops = {
+	.suspend	= pxa2xx_clock_suspend,
+	.resume		= pxa2xx_clock_resume,
+};