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, 407 insertions, 0 deletions

diff --git a/kernel/drivers/media/pci/zoran/videocodec.c b/kernel/drivers/media/pci/zoran/videocodec.c
new file mode 100644
index 000000000..c01071635
--- /dev/null
+++ b/kernel/drivers/media/pci/zoran/videocodec.c
@@ -0,0 +1,407 @@
+/*
+ * VIDEO MOTION CODECs internal API for video devices
+ *
+ * Interface for MJPEG (and maybe later MPEG/WAVELETS) codec's
+ * bound to a master device.
+ *
+ * (c) 2002 Wolfgang Scherr <scherr@net4you.at>
+ *
+ * $Id: videocodec.c,v 1.1.2.8 2003/03/29 07:16:04 rbultje Exp $
+ *
+ * ------------------------------------------------------------------------
+ *
+ * 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.
+ *
+ * ------------------------------------------------------------------------
+ */
+
+#define VIDEOCODEC_VERSION "v0.2"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+
+// kernel config is here (procfs flag)
+
+#ifdef CONFIG_PROC_FS
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <asm/uaccess.h>
+#endif
+
+#include "videocodec.h"
+
+static int debug;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0-4)");
+
+#define dprintk(num, format, args...) \
+	do { \
+		if (debug >= num) \
+			printk(format, ##args); \
+	} while (0)
+
+struct attached_list {
+	struct videocodec *codec;
+	struct attached_list *next;
+};
+
+struct codec_list {
+	const struct videocodec *codec;
+	int attached;
+	struct attached_list *list;
+	struct codec_list *next;
+};
+
+static struct codec_list *codeclist_top = NULL;
+
+/* ================================================= */
+/* function prototypes of the master/slave interface */
+/* ================================================= */
+
+struct videocodec *
+videocodec_attach (struct videocodec_master *master)
+{
+	struct codec_list *h = codeclist_top;
+	struct attached_list *a, *ptr;
+	struct videocodec *codec;
+	int res;
+
+	if (!master) {
+		dprintk(1, KERN_ERR "videocodec_attach: no data\n");
+		return NULL;
+	}
+
+	dprintk(2,
+		"videocodec_attach: '%s', flags %lx, magic %lx\n",
+		master->name, master->flags, master->magic);
+
+	if (!h) {
+		dprintk(1,
+			KERN_ERR
+			"videocodec_attach: no device available\n");
+		return NULL;
+	}
+
+	while (h) {
+		// attach only if the slave has at least the flags
+		// expected by the master
+		if ((master->flags & h->codec->flags) == master->flags) {
+			dprintk(4, "videocodec_attach: try '%s'\n",
+				h->codec->name);
+
+			if (!try_module_get(h->codec->owner))
+				return NULL;
+
+			codec = kmemdup(h->codec, sizeof(struct videocodec),
+					GFP_KERNEL);
+			if (!codec) {
+				dprintk(1,
+					KERN_ERR
+					"videocodec_attach: no mem\n");
+				goto out_module_put;
+			}
+
+			snprintf(codec->name, sizeof(codec->name),
+				 "%s[%d]", codec->name, h->attached);
+			codec->master_data = master;
+			res = codec->setup(codec);
+			if (res == 0) {
+				dprintk(3, "videocodec_attach '%s'\n",
+					codec->name);
+				ptr = kzalloc(sizeof(struct attached_list), GFP_KERNEL);
+				if (!ptr) {
+					dprintk(1,
+						KERN_ERR
+						"videocodec_attach: no memory\n");
+					goto out_kfree;
+				}
+				ptr->codec = codec;
+
+				a = h->list;
+				if (!a) {
+					h->list = ptr;
+					dprintk(4,
+						"videocodec: first element\n");
+				} else {
+					while (a->next)
+						a = a->next;	// find end
+					a->next = ptr;
+					dprintk(4,
+						"videocodec: in after '%s'\n",
+						h->codec->name);
+				}
+
+				h->attached += 1;
+				return codec;
+			} else {
+				kfree(codec);
+			}
+		}
+		h = h->next;
+	}
+
+	dprintk(1, KERN_ERR "videocodec_attach: no codec found!\n");
+	return NULL;
+
+ out_module_put:
+	module_put(h->codec->owner);
+ out_kfree:
+	kfree(codec);
+	return NULL;
+}
+
+int
+videocodec_detach (struct videocodec *codec)
+{
+	struct codec_list *h = codeclist_top;
+	struct attached_list *a, *prev;
+	int res;
+
+	if (!codec) {
+		dprintk(1, KERN_ERR "videocodec_detach: no data\n");
+		return -EINVAL;
+	}
+
+	dprintk(2,
+		"videocodec_detach: '%s', type: %x, flags %lx, magic %lx\n",
+		codec->name, codec->type, codec->flags, codec->magic);
+
+	if (!h) {
+		dprintk(1,
+			KERN_ERR "videocodec_detach: no device left...\n");
+		return -ENXIO;
+	}
+
+	while (h) {
+		a = h->list;
+		prev = NULL;
+		while (a) {
+			if (codec == a->codec) {
+				res = a->codec->unset(a->codec);
+				if (res >= 0) {
+					dprintk(3,
+						"videocodec_detach: '%s'\n",
+						a->codec->name);
+					a->codec->master_data = NULL;
+				} else {
+					dprintk(1,
+						KERN_ERR
+						"videocodec_detach: '%s'\n",
+						a->codec->name);
+					a->codec->master_data = NULL;
+				}
+				if (prev == NULL) {
+					h->list = a->next;
+					dprintk(4,
+						"videocodec: delete first\n");
+				} else {
+					prev->next = a->next;
+					dprintk(4,
+						"videocodec: delete middle\n");
+				}
+				module_put(a->codec->owner);
+				kfree(a->codec);
+				kfree(a);
+				h->attached -= 1;
+				return 0;
+			}
+			prev = a;
+			a = a->next;
+		}
+		h = h->next;
+	}
+
+	dprintk(1, KERN_ERR "videocodec_detach: given codec not found!\n");
+	return -EINVAL;
+}
+
+int
+videocodec_register (const struct videocodec *codec)
+{
+	struct codec_list *ptr, *h = codeclist_top;
+
+	if (!codec) {
+		dprintk(1, KERN_ERR "videocodec_register: no data!\n");
+		return -EINVAL;
+	}
+
+	dprintk(2,
+		"videocodec: register '%s', type: %x, flags %lx, magic %lx\n",
+		codec->name, codec->type, codec->flags, codec->magic);
+
+	ptr = kzalloc(sizeof(struct codec_list), GFP_KERNEL);
+	if (!ptr) {
+		dprintk(1, KERN_ERR "videocodec_register: no memory\n");
+		return -ENOMEM;
+	}
+	ptr->codec = codec;
+
+	if (!h) {
+		codeclist_top = ptr;
+		dprintk(4, "videocodec: hooked in as first element\n");
+	} else {
+		while (h->next)
+			h = h->next;	// find the end
+		h->next = ptr;
+		dprintk(4, "videocodec: hooked in after '%s'\n",
+			h->codec->name);
+	}
+
+	return 0;
+}
+
+int
+videocodec_unregister (const struct videocodec *codec)
+{
+	struct codec_list *prev = NULL, *h = codeclist_top;
+
+	if (!codec) {
+		dprintk(1, KERN_ERR "videocodec_unregister: no data!\n");
+		return -EINVAL;
+	}
+
+	dprintk(2,
+		"videocodec: unregister '%s', type: %x, flags %lx, magic %lx\n",
+		codec->name, codec->type, codec->flags, codec->magic);
+
+	if (!h) {
+		dprintk(1,
+			KERN_ERR
+			"videocodec_unregister: no device left...\n");
+		return -ENXIO;
+	}
+
+	while (h) {
+		if (codec == h->codec) {
+			if (h->attached) {
+				dprintk(1,
+					KERN_ERR
+					"videocodec: '%s' is used\n",
+					h->codec->name);
+				return -EBUSY;
+			}
+			dprintk(3, "videocodec: unregister '%s' is ok.\n",
+				h->codec->name);
+			if (prev == NULL) {
+				codeclist_top = h->next;
+				dprintk(4,
+					"videocodec: delete first element\n");
+			} else {
+				prev->next = h->next;
+				dprintk(4,
+					"videocodec: delete middle element\n");
+			}
+			kfree(h);
+			return 0;
+		}
+		prev = h;
+		h = h->next;
+	}
+
+	dprintk(1,
+		KERN_ERR
+		"videocodec_unregister: given codec not found!\n");
+	return -EINVAL;
+}
+
+#ifdef CONFIG_PROC_FS
+static int proc_videocodecs_show(struct seq_file *m, void *v)
+{
+	struct codec_list *h = codeclist_top;
+	struct attached_list *a;
+
+	seq_printf(m, "<S>lave or attached <M>aster name  type flags    magic    ");
+	seq_printf(m, "(connected as)\n");
+
+	h = codeclist_top;
+	while (h) {
+		seq_printf(m, "S %32s %04x %08lx %08lx (TEMPLATE)\n",
+			      h->codec->name, h->codec->type,
+			      h->codec->flags, h->codec->magic);
+		a = h->list;
+		while (a) {
+			seq_printf(m, "M %32s %04x %08lx %08lx (%s)\n",
+				      a->codec->master_data->name,
+				      a->codec->master_data->type,
+				      a->codec->master_data->flags,
+				      a->codec->master_data->magic,
+				      a->codec->name);
+			a = a->next;
+		}
+		h = h->next;
+	}
+
+	return 0;
+}
+
+static int proc_videocodecs_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, proc_videocodecs_show, NULL);
+}
+
+static const struct file_operations videocodecs_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= proc_videocodecs_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+#endif
+
+/* ===================== */
+/* hook in driver module */
+/* ===================== */
+static int __init
+videocodec_init (void)
+{
+#ifdef CONFIG_PROC_FS
+	static struct proc_dir_entry *videocodec_proc_entry;
+#endif
+
+	printk(KERN_INFO "Linux video codec intermediate layer: %s\n",
+	       VIDEOCODEC_VERSION);
+
+#ifdef CONFIG_PROC_FS
+	videocodec_proc_entry = proc_create("videocodecs", 0, NULL, &videocodecs_proc_fops);
+	if (!videocodec_proc_entry) {
+		dprintk(1, KERN_ERR "videocodec: can't init procfs.\n");
+	}
+#endif
+	return 0;
+}
+
+static void __exit
+videocodec_exit (void)
+{
+#ifdef CONFIG_PROC_FS
+	remove_proc_entry("videocodecs", NULL);
+#endif
+}
+
+EXPORT_SYMBOL(videocodec_attach);
+EXPORT_SYMBOL(videocodec_detach);
+EXPORT_SYMBOL(videocodec_register);
+EXPORT_SYMBOL(videocodec_unregister);
+
+module_init(videocodec_init);
+module_exit(videocodec_exit);
+
+MODULE_AUTHOR("Wolfgang Scherr <scherr@net4you.at>");
+MODULE_DESCRIPTION("Intermediate API module for video codecs "
+		   VIDEOCODEC_VERSION);
+MODULE_LICENSE("GPL");