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, 350 insertions, 0 deletions

diff --git a/kernel/drivers/media/pci/saa7134/saa7134-empress.c b/kernel/drivers/media/pci/saa7134/saa7134-empress.c
new file mode 100644
index 000000000..594dc3ad4
--- /dev/null
+++ b/kernel/drivers/media/pci/saa7134/saa7134-empress.c
@@ -0,0 +1,350 @@
+/*
+ *
+ * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
+ *
+ *  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.
+ */
+
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+
+#include <media/v4l2-common.h>
+#include <media/v4l2-event.h>
+
+#include "saa7134-reg.h"
+#include "saa7134.h"
+
+/* ------------------------------------------------------------------ */
+
+MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
+MODULE_LICENSE("GPL");
+
+static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
+
+module_param_array(empress_nr, int, NULL, 0444);
+MODULE_PARM_DESC(empress_nr,"ts device number");
+
+static unsigned int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug,"enable debug messages");
+
+#define dprintk(fmt, arg...)	if (debug)			\
+	printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
+
+/* ------------------------------------------------------------------ */
+
+static int start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+	struct saa7134_dmaqueue *dmaq = vq->drv_priv;
+	struct saa7134_dev *dev = dmaq->dev;
+	u32 leading_null_bytes = 0;
+	int err;
+
+	err = saa7134_ts_start_streaming(vq, count);
+	if (err)
+		return err;
+
+	/* If more cards start to need this, then this
+	   should probably be added to the card definitions. */
+	switch (dev->board) {
+	case SAA7134_BOARD_BEHOLD_M6:
+	case SAA7134_BOARD_BEHOLD_M63:
+	case SAA7134_BOARD_BEHOLD_M6_EXTRA:
+		leading_null_bytes = 1;
+		break;
+	}
+	saa_call_all(dev, core, init, leading_null_bytes);
+	/* Unmute audio */
+	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
+			saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
+	dev->empress_started = 1;
+	return 0;
+}
+
+static void stop_streaming(struct vb2_queue *vq)
+{
+	struct saa7134_dmaqueue *dmaq = vq->drv_priv;
+	struct saa7134_dev *dev = dmaq->dev;
+
+	saa7134_ts_stop_streaming(vq);
+	saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
+	msleep(20);
+	saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
+	msleep(100);
+	/* Mute audio */
+	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
+			saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
+	dev->empress_started = 0;
+}
+
+static struct vb2_ops saa7134_empress_qops = {
+	.queue_setup	= saa7134_ts_queue_setup,
+	.buf_init	= saa7134_ts_buffer_init,
+	.buf_prepare	= saa7134_ts_buffer_prepare,
+	.buf_queue	= saa7134_vb2_buffer_queue,
+	.wait_prepare	= vb2_ops_wait_prepare,
+	.wait_finish	= vb2_ops_wait_finish,
+	.start_streaming = start_streaming,
+	.stop_streaming = stop_streaming,
+};
+
+/* ------------------------------------------------------------------ */
+
+static int empress_enum_fmt_vid_cap(struct file *file, void  *priv,
+					struct v4l2_fmtdesc *f)
+{
+	if (f->index != 0)
+		return -EINVAL;
+
+	strlcpy(f->description, "MPEG TS", sizeof(f->description));
+	f->pixelformat = V4L2_PIX_FMT_MPEG;
+	f->flags = V4L2_FMT_FLAG_COMPRESSED;
+	return 0;
+}
+
+static int empress_g_fmt_vid_cap(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	struct saa7134_dev *dev = video_drvdata(file);
+	struct v4l2_mbus_framefmt mbus_fmt;
+
+	saa_call_all(dev, video, g_mbus_fmt, &mbus_fmt);
+
+	v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
+	f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
+	f->fmt.pix.sizeimage    = TS_PACKET_SIZE * dev->ts.nr_packets;
+	f->fmt.pix.bytesperline = 0;
+
+	return 0;
+}
+
+static int empress_s_fmt_vid_cap(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	struct saa7134_dev *dev = video_drvdata(file);
+	struct v4l2_mbus_framefmt mbus_fmt;
+
+	v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
+	saa_call_all(dev, video, s_mbus_fmt, &mbus_fmt);
+	v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
+
+	f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
+	f->fmt.pix.sizeimage    = TS_PACKET_SIZE * dev->ts.nr_packets;
+	f->fmt.pix.bytesperline = 0;
+
+	return 0;
+}
+
+static int empress_try_fmt_vid_cap(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	struct saa7134_dev *dev = video_drvdata(file);
+	struct v4l2_mbus_framefmt mbus_fmt;
+
+	v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
+	saa_call_all(dev, video, try_mbus_fmt, &mbus_fmt);
+	v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
+
+	f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
+	f->fmt.pix.sizeimage    = TS_PACKET_SIZE * dev->ts.nr_packets;
+	f->fmt.pix.bytesperline = 0;
+
+	return 0;
+}
+
+static const struct v4l2_file_operations ts_fops =
+{
+	.owner	  = THIS_MODULE,
+	.open	  = v4l2_fh_open,
+	.release  = vb2_fop_release,
+	.read	  = vb2_fop_read,
+	.poll	  = vb2_fop_poll,
+	.mmap	  = vb2_fop_mmap,
+	.unlocked_ioctl = video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops ts_ioctl_ops = {
+	.vidioc_querycap		= saa7134_querycap,
+	.vidioc_enum_fmt_vid_cap	= empress_enum_fmt_vid_cap,
+	.vidioc_try_fmt_vid_cap		= empress_try_fmt_vid_cap,
+	.vidioc_s_fmt_vid_cap		= empress_s_fmt_vid_cap,
+	.vidioc_g_fmt_vid_cap		= empress_g_fmt_vid_cap,
+	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
+	.vidioc_querybuf		= vb2_ioctl_querybuf,
+	.vidioc_qbuf			= vb2_ioctl_qbuf,
+	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
+	.vidioc_streamon		= vb2_ioctl_streamon,
+	.vidioc_streamoff		= vb2_ioctl_streamoff,
+	.vidioc_g_frequency		= saa7134_g_frequency,
+	.vidioc_s_frequency		= saa7134_s_frequency,
+	.vidioc_g_tuner			= saa7134_g_tuner,
+	.vidioc_s_tuner			= saa7134_s_tuner,
+	.vidioc_enum_input		= saa7134_enum_input,
+	.vidioc_g_input			= saa7134_g_input,
+	.vidioc_s_input			= saa7134_s_input,
+	.vidioc_s_std			= saa7134_s_std,
+	.vidioc_g_std			= saa7134_g_std,
+	.vidioc_querystd		= saa7134_querystd,
+	.vidioc_log_status		= v4l2_ctrl_log_status,
+	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
+};
+
+/* ----------------------------------------------------------- */
+
+static struct video_device saa7134_empress_template = {
+	.name          = "saa7134-empress",
+	.fops          = &ts_fops,
+	.ioctl_ops     = &ts_ioctl_ops,
+
+	.tvnorms			= SAA7134_NORMS,
+};
+
+static void empress_signal_update(struct work_struct *work)
+{
+	struct saa7134_dev* dev =
+		container_of(work, struct saa7134_dev, empress_workqueue);
+
+	if (dev->nosignal) {
+		dprintk("no video signal\n");
+	} else {
+		dprintk("video signal acquired\n");
+	}
+}
+
+static void empress_signal_change(struct saa7134_dev *dev)
+{
+	schedule_work(&dev->empress_workqueue);
+}
+
+static bool empress_ctrl_filter(const struct v4l2_ctrl *ctrl)
+{
+	switch (ctrl->id) {
+	case V4L2_CID_BRIGHTNESS:
+	case V4L2_CID_HUE:
+	case V4L2_CID_CONTRAST:
+	case V4L2_CID_SATURATION:
+	case V4L2_CID_AUDIO_MUTE:
+	case V4L2_CID_AUDIO_VOLUME:
+	case V4L2_CID_PRIVATE_INVERT:
+	case V4L2_CID_PRIVATE_AUTOMUTE:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static int empress_init(struct saa7134_dev *dev)
+{
+	struct v4l2_ctrl_handler *hdl = &dev->empress_ctrl_handler;
+	struct vb2_queue *q;
+	int err;
+
+	dprintk("%s: %s\n",dev->name,__func__);
+	dev->empress_dev = video_device_alloc();
+	if (NULL == dev->empress_dev)
+		return -ENOMEM;
+	*(dev->empress_dev) = saa7134_empress_template;
+	dev->empress_dev->v4l2_dev  = &dev->v4l2_dev;
+	dev->empress_dev->release = video_device_release;
+	dev->empress_dev->lock = &dev->lock;
+	snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
+		 "%s empress (%s)", dev->name,
+		 saa7134_boards[dev->board].name);
+	v4l2_ctrl_handler_init(hdl, 21);
+	v4l2_ctrl_add_handler(hdl, &dev->ctrl_handler, empress_ctrl_filter);
+	if (dev->empress_sd)
+		v4l2_ctrl_add_handler(hdl, dev->empress_sd->ctrl_handler, NULL);
+	if (hdl->error) {
+		video_device_release(dev->empress_dev);
+		return hdl->error;
+	}
+	dev->empress_dev->ctrl_handler = hdl;
+
+	INIT_WORK(&dev->empress_workqueue, empress_signal_update);
+
+	q = &dev->empress_vbq;
+	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	/*
+	 * Do not add VB2_USERPTR: the saa7134 DMA engine cannot handle
+	 * transfers that do not start at the beginning of a page. A USERPTR
+	 * can start anywhere in a page, so USERPTR support is a no-go.
+	 */
+	q->io_modes = VB2_MMAP | VB2_READ;
+	q->drv_priv = &dev->ts_q;
+	q->ops = &saa7134_empress_qops;
+	q->gfp_flags = GFP_DMA32;
+	q->mem_ops = &vb2_dma_sg_memops;
+	q->buf_struct_size = sizeof(struct saa7134_buf);
+	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	q->lock = &dev->lock;
+	err = vb2_queue_init(q);
+	if (err)
+		return err;
+	dev->empress_dev->queue = q;
+
+	video_set_drvdata(dev->empress_dev, dev);
+	err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
+				    empress_nr[dev->nr]);
+	if (err < 0) {
+		printk(KERN_INFO "%s: can't register video device\n",
+		       dev->name);
+		video_device_release(dev->empress_dev);
+		dev->empress_dev = NULL;
+		return err;
+	}
+	printk(KERN_INFO "%s: registered device %s [mpeg]\n",
+	       dev->name, video_device_node_name(dev->empress_dev));
+
+	empress_signal_update(&dev->empress_workqueue);
+	return 0;
+}
+
+static int empress_fini(struct saa7134_dev *dev)
+{
+	dprintk("%s: %s\n",dev->name,__func__);
+
+	if (NULL == dev->empress_dev)
+		return 0;
+	flush_work(&dev->empress_workqueue);
+	video_unregister_device(dev->empress_dev);
+	vb2_queue_release(&dev->empress_vbq);
+	v4l2_ctrl_handler_free(&dev->empress_ctrl_handler);
+	dev->empress_dev = NULL;
+	return 0;
+}
+
+static struct saa7134_mpeg_ops empress_ops = {
+	.type          = SAA7134_MPEG_EMPRESS,
+	.init          = empress_init,
+	.fini          = empress_fini,
+	.signal_change = empress_signal_change,
+};
+
+static int __init empress_register(void)
+{
+	return saa7134_ts_register(&empress_ops);
+}
+
+static void __exit empress_unregister(void)
+{
+	saa7134_ts_unregister(&empress_ops);
+}
+
+module_init(empress_register);
+module_exit(empress_unregister);