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, 118 insertions, 0 deletions

diff --git a/kernel/drivers/media/usb/usbtv/usbtv.h b/kernel/drivers/media/usb/usbtv/usbtv.h
new file mode 100644
index 000000000..968119581
--- /dev/null
+++ b/kernel/drivers/media/usb/usbtv/usbtv.h
@@ -0,0 +1,118 @@
+/*
+ * Fushicai USBTV007 Audio-Video Grabber Driver
+ *
+ * Copyright (c) 2013 Lubomir Rintel
+ * All rights reserved.
+ * No physical hardware was harmed running Windows during the
+ * reverse-engineering activity
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+
+#include <media/v4l2-device.h>
+#include <media/videobuf2-vmalloc.h>
+
+/* Hardware. */
+#define USBTV_VIDEO_ENDP	0x81
+#define USBTV_AUDIO_ENDP	0x83
+#define USBTV_BASE		0xc000
+#define USBTV_REQUEST_REG	12
+
+/* Number of concurrent isochronous urbs submitted.
+ * Higher numbers was seen to overly saturate the USB bus. */
+#define USBTV_ISOC_TRANSFERS	16
+#define USBTV_ISOC_PACKETS	8
+
+#define USBTV_CHUNK_SIZE	256
+#define USBTV_CHUNK		240
+
+#define USBTV_AUDIO_URBSIZE	20480
+#define USBTV_AUDIO_HDRSIZE	4
+#define USBTV_AUDIO_BUFFER	65536
+
+/* Chunk header. */
+#define USBTV_MAGIC_OK(chunk)	((be32_to_cpu(chunk[0]) & 0xff000000) \
+							== 0x88000000)
+#define USBTV_FRAME_ID(chunk)	((be32_to_cpu(chunk[0]) & 0x00ff0000) >> 16)
+#define USBTV_ODD(chunk)	((be32_to_cpu(chunk[0]) & 0x0000f000) >> 15)
+#define USBTV_CHUNK_NO(chunk)	(be32_to_cpu(chunk[0]) & 0x00000fff)
+
+#define USBTV_TV_STD  (V4L2_STD_525_60 | V4L2_STD_PAL)
+
+/* parameters for supported TV norms */
+struct usbtv_norm_params {
+	v4l2_std_id norm;
+	int cap_width, cap_height;
+};
+
+/* A single videobuf2 frame buffer. */
+struct usbtv_buf {
+	struct vb2_buffer vb;
+	struct list_head list;
+};
+
+/* Per-device structure. */
+struct usbtv {
+	struct device *dev;
+	struct usb_device *udev;
+
+	/* video */
+	struct v4l2_device v4l2_dev;
+	struct video_device vdev;
+	struct vb2_queue vb2q;
+	struct mutex v4l2_lock;
+	struct mutex vb2q_lock;
+
+	/* List of videobuf2 buffers protected by a lock. */
+	spinlock_t buflock;
+	struct list_head bufs;
+
+	/* Number of currently processed frame, useful find
+	 * out when a new one begins. */
+	u32 frame_id;
+	int chunks_done;
+
+	enum {
+		USBTV_COMPOSITE_INPUT,
+		USBTV_SVIDEO_INPUT,
+	} input;
+	v4l2_std_id norm;
+	int width, height;
+	int n_chunks;
+	int iso_size;
+	unsigned int sequence;
+	struct urb *isoc_urbs[USBTV_ISOC_TRANSFERS];
+
+	/* audio */
+	struct snd_card *snd;
+	struct snd_pcm_substream *snd_substream;
+	atomic_t snd_stream;
+	struct work_struct snd_trigger;
+	struct urb *snd_bulk_urb;
+	size_t snd_buffer_pos;
+	size_t snd_period_pos;
+};
+
+int usbtv_set_regs(struct usbtv *usbtv, const u16 regs[][2], int size);
+
+int usbtv_video_init(struct usbtv *usbtv);
+void usbtv_video_free(struct usbtv *usbtv);
+
+int usbtv_audio_init(struct usbtv *usbtv);
+void usbtv_audio_free(struct usbtv *usbtv);
+void usbtv_audio_suspend(struct usbtv *usbtv);
+void usbtv_audio_resume(struct usbtv *usbtv);