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, 93 insertions, 0 deletions

diff --git a/kernel/drivers/media/dvb-frontends/au8522.h b/kernel/drivers/media/dvb-frontends/au8522.h
new file mode 100644
index 000000000..dde61582c
--- /dev/null
+++ b/kernel/drivers/media/dvb-frontends/au8522.h
@@ -0,0 +1,93 @@
+/*
+    Auvitek AU8522 QAM/8VSB demodulator driver
+
+    Copyright (C) 2008 Steven Toth <stoth@linuxtv.org>
+
+    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 __AU8522_H__
+#define __AU8522_H__
+
+#include <linux/kconfig.h>
+#include <linux/dvb/frontend.h>
+
+enum au8522_if_freq {
+	AU8522_IF_6MHZ = 0,
+	AU8522_IF_4MHZ,
+	AU8522_IF_3_25MHZ,
+};
+
+struct au8522_led_config {
+	u16 vsb8_strong;
+	u16 qam64_strong;
+	u16 qam256_strong;
+
+	u16 gpio_output;
+	/* unset hi bits, set low bits */
+	u16 gpio_output_enable;
+	u16 gpio_output_disable;
+
+	u16 gpio_leds;
+	u8 *led_states;
+	unsigned int num_led_states;
+};
+
+struct au8522_config {
+	/* the demodulator's i2c address */
+	u8 demod_address;
+
+	/* Return lock status based on tuner lock, or demod lock */
+#define AU8522_TUNERLOCKING 0
+#define AU8522_DEMODLOCKING 1
+	u8 status_mode;
+
+	struct au8522_led_config *led_cfg;
+
+	enum au8522_if_freq vsb_if;
+	enum au8522_if_freq qam_if;
+};
+
+#if IS_REACHABLE(CONFIG_DVB_AU8522_DTV)
+extern struct dvb_frontend *au8522_attach(const struct au8522_config *config,
+					  struct i2c_adapter *i2c);
+#else
+static inline
+struct dvb_frontend *au8522_attach(const struct au8522_config *config,
+				   struct i2c_adapter *i2c)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif /* CONFIG_DVB_AU8522 */
+
+/* Other modes may need to be added later */
+enum au8522_video_input {
+	AU8522_COMPOSITE_CH1 = 1,
+	AU8522_COMPOSITE_CH2,
+	AU8522_COMPOSITE_CH3,
+	AU8522_COMPOSITE_CH4,
+	AU8522_COMPOSITE_CH4_SIF,
+	AU8522_SVIDEO_CH13,
+	AU8522_SVIDEO_CH24,
+};
+
+enum au8522_audio_input {
+	AU8522_AUDIO_NONE,
+	AU8522_AUDIO_SIF,
+};
+
+#endif /* __AU8522_H__ */