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>

2 files changed, 54 insertions, 0 deletions

diff --git a/kernel/drivers/clk/x86/Makefile b/kernel/drivers/clk/x86/Makefile
new file mode 100644
index 000000000..04781389d
--- /dev/null
+++ b/kernel/drivers/clk/x86/Makefile
@@ -0,0 +1,2 @@
+clk-x86-lpss-objs		:= clk-lpt.o
+obj-$(CONFIG_X86_INTEL_LPSS)	+= clk-x86-lpss.o
diff --git a/kernel/drivers/clk/x86/clk-lpt.c b/kernel/drivers/clk/x86/clk-lpt.c
new file mode 100644
index 000000000..f827083de
--- /dev/null
+++ b/kernel/drivers/clk/x86/clk-lpt.c
@@ -0,0 +1,52 @@
+/*
+ * Intel Low Power Subsystem clocks.
+ *
+ * Copyright (C) 2013, Intel Corporation
+ * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
+ *	    Heikki Krogerus <heikki.krogerus@linux.intel.com>
+ *
+ * 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/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/platform_data/clk-lpss.h>
+#include <linux/platform_device.h>
+
+static int lpt_clk_probe(struct platform_device *pdev)
+{
+	struct lpss_clk_data *drvdata;
+	struct clk *clk;
+
+	drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
+	if (!drvdata)
+		return -ENOMEM;
+
+	/* LPSS free running clock */
+	drvdata->name = "lpss_clk";
+	clk = clk_register_fixed_rate(&pdev->dev, drvdata->name, NULL,
+				      CLK_IS_ROOT, 100000000);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	drvdata->clk = clk;
+	platform_set_drvdata(pdev, drvdata);
+	return 0;
+}
+
+static struct platform_driver lpt_clk_driver = {
+	.driver = {
+		.name = "clk-lpt",
+	},
+	.probe = lpt_clk_probe,
+};
+
+int __init lpt_clk_init(void)
+{
+	return platform_driver_register(&lpt_clk_driver);
+}