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, 74 insertions, 0 deletions

diff --git a/kernel/drivers/media/dvb-frontends/ts2020.h b/kernel/drivers/media/dvb-frontends/ts2020.h
new file mode 100644
index 000000000..1714af94e
--- /dev/null
+++ b/kernel/drivers/media/dvb-frontends/ts2020.h
@@ -0,0 +1,74 @@
+/*
+    Montage Technology TS2020 - Silicon Tuner driver
+    Copyright (C) 2009-2012 Konstantin Dimitrov <kosio.dimitrov@gmail.com>
+
+    Copyright (C) 2009-2012 TurboSight.com
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef TS2020_H
+#define TS2020_H
+
+#include <linux/kconfig.h>
+#include <linux/dvb/frontend.h>
+
+struct ts2020_config {
+	u8 tuner_address;
+	u32 frequency_div;
+
+	/*
+	 * RF loop-through
+	 */
+	u8 loop_through:1;
+
+	/*
+	 * clock output
+	 */
+#define TS2020_CLK_OUT_DISABLED        0
+#define TS2020_CLK_OUT_ENABLED         1
+#define TS2020_CLK_OUT_ENABLED_XTALOUT 2
+	u8 clk_out:2;
+
+	/*
+	 * clock output divider
+	 * 1 - 31
+	 */
+	u8 clk_out_div:5;
+
+	/*
+	 * pointer to DVB frontend
+	 */
+	struct dvb_frontend *fe;
+};
+
+#if IS_REACHABLE(CONFIG_DVB_TS2020)
+
+extern struct dvb_frontend *ts2020_attach(
+	struct dvb_frontend *fe,
+	const struct ts2020_config *config,
+	struct i2c_adapter *i2c);
+#else
+static inline struct dvb_frontend *ts2020_attach(
+	struct dvb_frontend *fe,
+	const struct ts2020_config *config,
+	struct i2c_adapter *i2c)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif
+
+#endif /* TS2020_H */