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, 64 insertions, 0 deletions

diff --git a/kernel/drivers/media/dvb-frontends/ix2505v.h b/kernel/drivers/media/dvb-frontends/ix2505v.h
new file mode 100644
index 000000000..af107a2dd
--- /dev/null
+++ b/kernel/drivers/media/dvb-frontends/ix2505v.h
@@ -0,0 +1,64 @@
+/**
+ * Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner
+ *
+ * Copyright (C) 2010 Malcolm Priestley
+ *
+ * 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.
+ *
+ * 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 DVB_IX2505V_H
+#define DVB_IX2505V_H
+
+#include <linux/kconfig.h>
+#include <linux/i2c.h>
+#include "dvb_frontend.h"
+
+/**
+ * Attach a ix2505v tuner to the supplied frontend structure.
+ *
+ * @param fe Frontend to attach to.
+ * @param config ix2505v_config structure
+ * @return FE pointer on success, NULL on failure.
+ */
+
+struct ix2505v_config {
+	u8 tuner_address;
+
+	/*Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB */
+	u8 tuner_gain;
+
+	/*Charge pump output +/- 0=120 1=260 2=555 3=1200(default) */
+	u8 tuner_chargepump;
+
+	/* delay after tune */
+	int min_delay_ms;
+
+	/* disables reads*/
+	u8 tuner_write_only;
+
+};
+
+#if IS_REACHABLE(CONFIG_DVB_IX2505V)
+extern struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
+	const struct ix2505v_config *config, struct i2c_adapter *i2c);
+#else
+static inline struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
+	const struct ix2505v_config *config, struct i2c_adapter *i2c)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif
+
+#endif /* DVB_IX2505V_H */