diff --git a/drivers/media/platform/davinci/vpfe_video.c b/drivers/media/platform/davinci/vpfe_video.c
new file mode 100644
index 0000000..2e696a0
--- /dev/null
+++ b/drivers/media/platform/davinci/vpfe_video.c
@@ -0,0 +1,1725 @@
+/*
+ * Copyright (C) 2012 Texas Instruments Inc
+ *
+ * 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 version 2.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ * Contributors:
+ *      Manjunath Hadli <manjunath.hadli@ti.com>
+ *      Prabhakar Lad <prabhakar.lad@ti.com>
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <media/v4l2-common.h>
+#include <media/v4l2-mediabus.h>
+#include <media/media-entity.h>
+#include <media/media-device.h>
+#include <media/davinci/vpfe_types.h>
+
+#include <mach/cputype.h>
+
+#include "vpfe_mc_capture.h"
+#include "ccdc_hw_device.h"
+
+/* minimum number of buffers needed in cont-mode */
+#define CONT_MIN_NUM_BUFFERS	3
+
+static int debug;
+
+/* get v4l2 subdev pointer to external subdev which is active */
+static struct media_entity *vpfe_get_input_entity
+			(struct vpfe_video_device *video)
+{
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct media_pad *remote;
+
+	remote = media_entity_remote_source(&vpfe_dev->vpfe_ccdc.pads[0]);
+	if (remote == NULL) {
+		pr_err("Invalid media connection to ccdc\n");
+		return NULL;
+	}
+
+	return remote->entity;
+}
+
+/* updates external subdev(sensor/decoder) which is active */
+static int vpfe_update_current_ext_subdev(struct vpfe_video_device *video)
+{
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_config *vpfe_cfg;
+	struct v4l2_subdev *subdev;
+	struct media_pad *remote;
+	int i;
+
+	remote = media_entity_remote_source(&vpfe_dev->vpfe_ccdc.pads[0]);
+	if (remote == NULL) {
+		pr_err("Invalid media connection to ccdc\n");
+		return -EINVAL;
+	}
+
+	subdev = media_entity_to_v4l2_subdev(remote->entity);
+
+	vpfe_cfg = vpfe_dev->pdev->platform_data;
+
+	for (i = 0; i < vpfe_cfg->num_subdevs; i++) {
+		if (!strcmp(vpfe_cfg->sub_devs[i].module_name, subdev->name)) {
+			video->current_ext_subdev = &vpfe_cfg->sub_devs[i];
+			break;
+		}
+	}
+
+	/* if user not linked decoder/sensor to ccdc */
+	if (i == vpfe_cfg->num_subdevs) {
+		pr_err("Invalid media chain connection to ccdc\n");
+		return -EINVAL;
+	}
+
+	/* find the v4l2 subdev pointer */
+	for (i = 0; i < vpfe_dev->num_ext_subdevs; i++) {
+		if (!strcmp(video->current_ext_subdev->module_name,
+			vpfe_dev->sd[i]->name))
+			video->current_ext_subdev->subdev = vpfe_dev->sd[i];
+	}
+
+	return 0;
+}
+
+/* get the subdev which is connected to the output video node */
+static struct v4l2_subdev *
+vpfe_video_remote_subdev(struct vpfe_video_device *video, u32 *pad)
+{
+	struct media_pad *remote;
+
+	remote = media_entity_remote_source(&video->pad);
+
+	if (remote == NULL || remote->entity->type != MEDIA_ENT_T_V4L2_SUBDEV)
+		return NULL;
+
+	if (pad)
+		*pad = remote->index;
+
+	return media_entity_to_v4l2_subdev(remote->entity);
+}
+
+/* get the format set at ouput pad of the adjacent subdev */
+static int
+__vpfe_video_get_format(struct vpfe_video_device *video,
+			struct v4l2_format *format)
+{
+	struct v4l2_subdev_format fmt;
+	struct v4l2_subdev *subdev;
+	struct media_pad *remote;
+	u32 pad;
+	int ret;
+
+	subdev = vpfe_video_remote_subdev(video, &pad);
+	if (subdev == NULL)
+		return -EINVAL;
+
+	fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+	remote = media_entity_remote_source(&video->pad);
+	fmt.pad = remote->index;
+
+	ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
+	if (ret == -ENOIOCTLCMD)
+		return -EINVAL;
+
+	format->type = video->type;
+	/* convert mbus_format to v4l2_format */
+	v4l2_fill_pix_format(&format->fmt.pix, &fmt.format);
+	mbus_to_pix(&fmt.format, &format->fmt.pix);
+
+	return 0;
+}
+
+/* make a note of pipeline details */
+static void vpfe_prepare_pipeline(struct vpfe_video_device *video)
+{
+	struct media_entity *entity = &video->video_dev.entity;
+	struct media_device *mdev = entity->parent;
+	struct vpfe_pipeline *pipe = &video->pipe;
+	struct vpfe_video_device *far_end = NULL;
+	struct media_entity_graph graph;
+
+	pipe->input_num = 0;
+	pipe->output_num = 0;
+
+	if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
+		pipe->inputs[pipe->input_num++] = video;
+	else
+		pipe->outputs[pipe->output_num++] = video;
+
+	mutex_lock(&mdev->graph_mutex);
+	media_entity_graph_walk_start(&graph, entity);
+
+	while ((entity = media_entity_graph_walk_next(&graph))) {
+		if (entity == &video->video_dev.entity)
+			continue;
+
+		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
+			continue;
+
+		far_end = to_vpfe_video(media_entity_to_video_device(entity));
+
+		if (far_end->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
+			pipe->inputs[pipe->input_num++] = far_end;
+		else
+			pipe->outputs[pipe->output_num++] = far_end;
+	}
+
+	mutex_unlock(&mdev->graph_mutex);
+}
+
+/* update pipe state selected by user */
+static int vpfe_update_pipe_state(struct vpfe_video_device *video)
+{
+	struct vpfe_pipeline *pipe = &video->pipe;
+	int ret;
+
+	vpfe_prepare_pipeline(video);
+
+	/* Find out if there is any input video
+	  if yes, it is single shot.
+	*/
+	if (pipe->input_num == 0) {
+		pipe->state = VPFE_PIPELINE_STREAM_CONTINUOUS;
+		ret = vpfe_update_current_ext_subdev(video);
+		if (ret) {
+			pr_err("Invalid external subdev\n");
+			return ret;
+		}
+	} else {
+		pipe->state = VPFE_PIPELINE_STREAM_SINGLESHOT;
+	}
+
+	video->initialized = 1;
+	video->skip_frame_count = 1;
+	video->skip_frame_count_init = 1;
+
+	return 0;
+}
+
+/* checks wether pipeline is ready for enabling */
+int is_pipe_ready(struct vpfe_pipeline *pipe)
+{
+	int i;
+
+	for (i = 0; i < pipe->input_num; i++)
+		if (!pipe->inputs[i]->started ||
+			pipe->inputs[i]->state != VPFE_VIDEO_BUFFER_QUEUED)
+			return 0;
+
+	for (i = 0; i < pipe->output_num; i++)
+		if (!pipe->outputs[i]->started ||
+			pipe->outputs[i]->state != VPFE_VIDEO_BUFFER_QUEUED)
+			return 0;
+
+	return 1;
+}
+
+/**
+ * Validate a pipeline by checking both ends of all links for format
+ * discrepancies.
+ *
+ * Return 0 if all formats match, or -EPIPE if at least one link is found with
+ * different formats on its two ends.
+ */
+static int vpfe_video_validate_pipeline(struct vpfe_pipeline *pipe)
+{
+	struct v4l2_subdev_format fmt_source;
+	struct v4l2_subdev_format fmt_sink;
+	struct v4l2_subdev *subdev;
+	struct media_pad *pad;
+	int ret;
+
+	/* Should not matter if it is output[0] or 1 as
+	   the general ideas is to traverse backwards and
+	   the fact that the out video node always has the
+	   format of the connected pad.
+	*/
+	subdev = vpfe_video_remote_subdev(pipe->outputs[0], NULL);
+	if (subdev == NULL)
+		return -EPIPE;
+
+	while (1) {
+		/* Retrieve the sink format */
+		pad = &subdev->entity.pads[0];
+		if (!(pad->flags & MEDIA_PAD_FL_SINK))
+			break;
+
+		fmt_sink.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+		fmt_sink.pad = pad->index;
+		ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL,
+				       &fmt_sink);
+
+		if (ret < 0 && ret != -ENOIOCTLCMD)
+			return -EPIPE;
+
+		/* Retrieve the source format */
+		pad = media_entity_remote_source(pad);
+		if (pad == NULL ||
+			pad->entity->type != MEDIA_ENT_T_V4L2_SUBDEV)
+			break;
+
+		subdev = media_entity_to_v4l2_subdev(pad->entity);
+
+		fmt_source.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+		fmt_source.pad = pad->index;
+		ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt_source);
+		if (ret < 0 && ret != -ENOIOCTLCMD)
+			return -EPIPE;
+
+		/* Check if the two ends match */
+		if (fmt_source.format.code != fmt_sink.format.code ||
+		    fmt_source.format.width != fmt_sink.format.width ||
+		    fmt_source.format.height != fmt_sink.format.height)
+			return -EPIPE;
+	}
+
+	return 0;
+}
+
+/**
+ * vpfe_pipeline_enable() - Enable streaming on a pipeline
+ * @vpfe_dev: vpfe device
+ * @pipe: vpfe pipeline
+ *
+ * Walk the entities chain starting at the pipeline output video node and start
+ * all modules in the chain in the given mode.
+ *
+ * Return 0 if successfull, or the return value of the failed video::s_stream
+ * operation otherwise.
+ */
+static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe)
+{
+	struct media_entity_graph graph;
+	struct media_entity *entity;
+	struct v4l2_subdev *subdev;
+	struct media_device *mdev;
+	int ret = 0;
+
+	if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS)
+		entity = vpfe_get_input_entity(pipe->outputs[0]);
+	else
+		entity = &pipe->inputs[0]->video_dev.entity;
+
+	mdev = entity->parent;
+
+	mutex_lock(&mdev->graph_mutex);
+	media_entity_graph_walk_start(&graph, entity);
+
+	while ((entity = media_entity_graph_walk_next(&graph))) {
+
+		if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE)
+			continue;
+
+		subdev = media_entity_to_v4l2_subdev(entity);
+
+		ret = v4l2_subdev_call(subdev, video, s_stream, 1);
+		if (ret < 0 && ret != -ENOIOCTLCMD)
+			break;
+	}
+	mutex_unlock(&mdev->graph_mutex);
+
+	return ret;
+}
+
+/**
+ * vpfe_pipeline_disable() - Disable streaming on a pipeline
+ * @vpfe_dev: vpfe device
+ * @pipe: VPFE pipeline
+ *
+ * Walk the entities chain starting at the pipeline output video node and stop
+ * all modules in the chain.
+ *
+ * Return 0 if all modules have been properly stopped, or -ETIMEDOUT if a module
+ * can't be stopped.
+ */
+static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe)
+{
+	struct media_entity_graph graph;
+	struct media_entity *entity;
+	struct v4l2_subdev *subdev;
+	struct media_device *mdev;
+	int ret = 0;
+
+	if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS)
+		entity = vpfe_get_input_entity(pipe->outputs[0]);
+	else
+		entity = &pipe->inputs[0]->video_dev.entity;
+
+	mdev = entity->parent;
+
+	mutex_lock(&mdev->graph_mutex);
+	media_entity_graph_walk_start(&graph, entity);
+
+	while ((entity = media_entity_graph_walk_next(&graph))) {
+
+		if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE)
+			continue;
+
+		subdev = media_entity_to_v4l2_subdev(entity);
+
+		ret = v4l2_subdev_call(subdev, video, s_stream, 0);
+		if (ret < 0 && ret != -ENOIOCTLCMD)
+			break;
+	}
+
+	mutex_unlock(&mdev->graph_mutex);
+
+	return (ret == 0) ? ret : -ETIMEDOUT ;
+}
+
+/**
+ * vpfe_pipeline_set_stream() - Enable/disable streaming on a pipeline
+ * @vpfe_dev: VPFE device
+ * @pipe: VPFE pipeline
+ * @state: Stream state (stopped or active)
+ *
+ * Set the pipeline to the given stream state.
+ *
+ * Return 0 if successfull, or the return value of the failed video::s_stream
+ * operation otherwise.
+ */
+static int vpfe_pipeline_set_stream(struct vpfe_pipeline *pipe,
+			    enum vpfe_pipeline_stream_state state)
+{
+	if (state == VPFE_PIPELINE_STREAM_STOPPED)
+		return vpfe_pipeline_disable(pipe);
+
+	return vpfe_pipeline_enable(pipe);
+}
+
+static int all_videos_stopped(struct vpfe_video_device *video)
+{
+	struct vpfe_pipeline *pipe = &video->pipe;
+	int i;
+
+	for (i = 0; i < pipe->input_num; i++)
+		if (pipe->inputs[i]->started)
+			return 0;
+
+	for (i = 0; i < pipe->output_num; i++)
+		if (pipe->outputs[i]->started)
+			return 0;
+
+	return 1;
+}
+
+/*
+ * vpfe_open() - open video device
+ * @file: file pointer
+ *
+ * initialize media pipeline state, allocate memory for file hadle
+ *
+ * Return 0 if successfull, or the return -ENODEV otherwise.
+ */
+static int vpfe_open(struct file *file)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_fh *fh;
+
+	/* Allocate memory for the file handle object */
+	fh = kzalloc(sizeof(struct vpfe_fh), GFP_KERNEL);
+
+	if (fh == NULL)
+		return -ENOMEM;
+	/* store pointer to fh in private_data member of file */
+	file->private_data = fh;
+	fh->video = video;
+	mutex_lock(&video->lock);
+	/* If decoder is not initialized. initialize it */
+	if (!video->initialized && vpfe_update_pipe_state(video)) {
+		mutex_unlock(&video->lock);
+		return -ENODEV;
+	}
+	/* Increment device usrs counter */
+	video->usrs++;
+	/* Set io_allowed member to false */
+	fh->io_allowed = 0;
+	/* Initialize priority of this instance to default priority */
+	fh->prio = V4L2_PRIORITY_UNSET;
+	v4l2_prio_open(&video->prio, &fh->prio);
+	mutex_unlock(&video->lock);
+
+	return 0;
+}
+
+/* get the next buffer available from dma queue */
+unsigned long vpfe_get_next_buffer(struct vpfe_video_device *video)
+{
+	/* mark next buffer as active */
+	video->next_frm = list_entry(video->dma_queue.next,
+					struct videobuf_buffer, queue);
+
+	/* in single shot mode both curr_frm
+	   and next_frm point to same buffer */
+	video->cur_frm = video->next_frm;
+	list_del(&video->next_frm->queue);
+	video->next_frm->state = VIDEOBUF_ACTIVE;
+
+	return videobuf_to_dma_contig(video->next_frm);
+}
+
+/* schedule the next buffer which is available on dma queue */
+void vpfe_schedule_next_buffer(struct vpfe_video_device *video)
+{
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	unsigned long addr;
+
+	if (list_empty(&video->dma_queue))
+		return;
+
+	video->next_frm = list_entry(video->dma_queue.next,
+					struct videobuf_buffer, queue);
+
+	if (VPFE_PIPELINE_STREAM_SINGLESHOT == video->pipe.state)
+		video->cur_frm = video->next_frm;
+
+	list_del(&video->next_frm->queue);
+	video->next_frm->state = VIDEOBUF_ACTIVE;
+	addr = videobuf_to_dma_contig(video->next_frm);
+
+	video->ops->queue(vpfe_dev, addr);
+
+	video->state = VPFE_VIDEO_BUFFER_QUEUED;
+}
+
+/* schedule the buffer for capturing bottom field */
+void vpfe_schedule_bottom_field(struct vpfe_video_device *video)
+{
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	unsigned long addr;
+
+	addr = videobuf_to_dma_contig(video->cur_frm);
+	addr += video->field_off;
+
+	video->ops->queue(vpfe_dev, addr);
+}
+
+/* make buffer available for dequeue */
+void vpfe_process_buffer_complete(struct vpfe_video_device *video)
+{
+	struct vpfe_pipeline *pipe = &video->pipe;
+	struct timespec timespec;
+	s64 nsec;
+
+	ktime_get_ts(&timespec);
+	nsec = timespec_to_ns(&timespec);
+
+	video->cur_frm->ts = ns_to_timeval(nsec);
+	video->cur_frm->state = VIDEOBUF_DONE;
+	video->cur_frm->size = video->fmt.fmt.pix.sizeimage;
+	wake_up_interruptible(&video->cur_frm->done);
+	if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS)
+		video->cur_frm = video->next_frm;
+}
+
+/* vpfe_stop_capture() - stop streaming */
+static void vpfe_stop_capture(struct vpfe_video_device *video)
+{
+	struct vpfe_pipeline *pipe = &video->pipe;
+
+	video->started = 0;
+
+	if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
+		return;
+
+	if (all_videos_stopped(video))
+		vpfe_pipeline_set_stream(pipe,
+					 VPFE_PIPELINE_STREAM_STOPPED);
+}
+
+/*
+ * vpfe_release() - release video device
+ * @file: file pointer
+ *
+ * deletes buffer queue, frees the buffers and the vpfe file handle
+ *
+ * Return 0
+ */
+static int vpfe_release(struct file *file)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_fh *fh = file->private_data;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n");
+
+	/* Get the device lock */
+	mutex_lock(&video->lock);
+	/* if this instance is doing IO */
+	if (fh->io_allowed) {
+		if (video->started) {
+			vpfe_stop_capture(video);
+			/* mark pipe state as stopped in vpfe_release(),
+			   as app might call streamon() after streamoff()
+			   in which case driver has to start streaming.
+			*/
+			video->pipe.state = VPFE_PIPELINE_STREAM_STOPPED;
+			videobuf_streamoff(&video->buffer_queue);
+		}
+		video->io_usrs = 0;
+	}
+
+	/* Decrement device usrs counter */
+	video->usrs--;
+	/* Close the priority */
+	v4l2_prio_close(&video->prio, fh->prio);
+
+	/* If this is the last file handle */
+	if (!video->usrs)
+		video->initialized = 0;
+
+	mutex_unlock(&video->lock);
+	file->private_data = NULL;
+	/* Free memory allocated to file handle object */
+	kzfree(fh);
+
+	return 0;
+}
+
+/*
+ * vpfe_mmap() - It is used to map kernel space buffers
+ * into user spaces
+ */
+static int vpfe_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n");
+
+	return videobuf_mmap_mapper(&video->buffer_queue, vma);
+}
+
+/*
+ * vpfe_poll() - It is used for select/poll system call
+ */
+static unsigned int vpfe_poll(struct file *file, poll_table *wait)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n");
+
+	if (video->started)
+		return videobuf_poll_stream(file,
+					    &video->buffer_queue, wait);
+
+	return 0;
+}
+
+/* vpfe capture driver file operations */
+static const struct v4l2_file_operations vpfe_fops = {
+	.owner = THIS_MODULE,
+	.open = vpfe_open,
+	.release = vpfe_release,
+	.unlocked_ioctl = video_ioctl2,
+	.mmap = vpfe_mmap,
+	.poll = vpfe_poll
+};
+
+/*
+ * vpfe_querycap() - query capabilities of video device
+ * @file: file pointer
+ * @priv: void pointer
+ * @cap: pointer to v4l2_capability structure
+ *
+ * fills v4l2 capabilities structure
+ *
+ * Return 0
+ */
+static int vpfe_querycap(struct file *file, void  *priv,
+			       struct v4l2_capability *cap)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n");
+
+	if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+	else
+		cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
+
+	cap->version = VPFE_CAPTURE_VERSION_CODE;
+	strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver));
+	strlcpy(cap->bus_info, "VPFE", sizeof(cap->bus_info));
+	strlcpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card));
+
+	return 0;
+}
+
+/*
+ * vpfe_g_fmt() - get the format which is active on video device
+ * @file: file pointer
+ * @priv: void pointer
+ * @fmt: pointer to v4l2_format structure
+ *
+ * fills v4l2 format structure with active format
+ *
+ * Return 0
+ */
+static int vpfe_g_fmt(struct file *file, void *priv,
+				struct v4l2_format *fmt)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt\n");
+	/* Fill in the information about format */
+	*fmt = video->fmt;
+
+	return 0;
+}
+
+/*
+ * vpfe_enum_fmt() - enum formats supported on media chain
+ * @file: file pointer
+ * @priv: void pointer
+ * @fmt: pointer to v4l2_fmtdesc structure
+ *
+ * fills v4l2_fmtdesc structure with output format set on adjacent subdev,
+ * only one format is enumearted as subdevs are already configured
+ *
+ * Return 0 if successfull, error code otherwise
+ */
+static int vpfe_enum_fmt(struct file *file, void  *priv,
+				   struct v4l2_fmtdesc *fmt)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct v4l2_subdev_format sd_fmt;
+	struct v4l2_mbus_framefmt mbus;
+	struct v4l2_subdev *subdev;
+	struct v4l2_format format;
+	struct media_pad *remote;
+	int ret;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt\n");
+
+	/* since already subdev pad format is set,
+	only one pixel format is available */
+	if (fmt->index > 0) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Invalid index\n");
+		return -EINVAL;
+	}
+
+	/* get the remote pad */
+	remote = media_entity_remote_source(&video->pad);
+	if (remote == NULL) {
+		v4l2_err(&vpfe_dev->v4l2_dev,
+			 "invalid remote pad for video node\n");
+		return -EINVAL;
+	}
+
+	/* get the remote subdev */
+	subdev = vpfe_video_remote_subdev(video, NULL);
+	if (subdev == NULL) {
+		v4l2_err(&vpfe_dev->v4l2_dev,
+			 "invalid remote subdev for video node\n");
+		return -EINVAL;
+	}
+
+	sd_fmt.pad = remote->index;
+	sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+	/* get output format of remote subdev */
+	ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &sd_fmt);
+	if (ret) {
+		v4l2_err(&vpfe_dev->v4l2_dev,
+			 "invalid remote subdev for video node\n");
+		return ret;
+	}
+	/* convert to pix format */
+	mbus.code = sd_fmt.format.code;
+	mbus_to_pix(&mbus, &format.fmt.pix);
+
+	/* copy the result */
+	fmt->pixelformat = format.fmt.pix.pixelformat;
+
+	return 0;
+}
+
+/*
+ * vpfe_s_fmt() - set the format on video device
+ * @file: file pointer
+ * @priv: void pointer
+ * @fmt: pointer to v4l2_format structure
+ *
+ * validate and set the format on video device
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_s_fmt(struct file *file, void *priv,
+				struct v4l2_format *fmt)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct v4l2_format format;
+	int ret;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt\n");
+
+	/* If streaming is started, return error */
+	if (video->started) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n");
+		return -EBUSY;
+	}
+
+	/* get adjacent subdev's output pad format */
+	ret = __vpfe_video_get_format(video, &format);
+	if (ret)
+		return ret;
+
+	*fmt = format;
+
+	video->fmt = *fmt;
+
+	return 0;
+}
+
+/*
+ * vpfe_try_fmt() - try the format on video device
+ * @file: file pointer
+ * @priv: void pointer
+ * @fmt: pointer to v4l2_format structure
+ *
+ * validate the format, update with correct format
+ * based on output format set on adjacent subdev
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_try_fmt(struct file *file, void *priv,
+				  struct v4l2_format *fmt)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct v4l2_format format;
+	int ret;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt\n");
+
+	/* get adjacent subdev's output pad format */
+	ret = __vpfe_video_get_format(video, &format);
+	if (ret)
+		return ret;
+
+	*fmt = format;
+
+	return 0;
+}
+
+/*
+ * vpfe_enum_input() - enum inputs supported on media chain
+ * @file: file pointer
+ * @priv: void pointer
+ * @fmt: pointer to v4l2_fmtdesc structure
+ *
+ * fills v4l2_input structure with input available on media chain,
+ * only one input is enumearted as media chain is setup by this time
+ *
+ * Return 0 if successfull, -EINVAL is media chain is invalid
+ */
+static int vpfe_enum_input(struct file *file, void *priv,
+				 struct v4l2_input *inp)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_ext_subdev_info *sdinfo = video->current_ext_subdev;
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n");
+
+	/* enumerate from the subdev user has choosen through mc */
+	if (inp->index < sdinfo->num_inputs) {
+		memcpy(inp, &sdinfo->inputs[inp->index],
+		       sizeof(struct v4l2_input));
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+/*
+ * vpfe_g_input() - get index of the input which is active
+ * @file: file pointer
+ * @priv: void pointer
+ * @index: pointer to unsigned int
+ *
+ * set index with input index which is active
+ *
+ * Return 0
+ */
+static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n");
+
+	*index = video->current_input;
+
+	return 0;
+}
+
+/*
+ * vpfe_s_input() - set input which is pointed by input index
+ * @file: file pointer
+ * @priv: void pointer
+ * @index: pointer to unsigned int
+ *
+ * set input on external subdev
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct ccdc_hw_device *ccdc_dev = vpfe_dev->vpfe_ccdc.ccdc_dev;
+	struct imp_hw_interface *imp_hw_if = vpfe_dev->vpfe_previewer.imp_hw_if;
+	struct vpfe_ext_subdev_info *sdinfo;
+	struct vpfe_route *route;
+	struct v4l2_input *inps;
+	u32 output;
+	u32 input;
+	int ret;
+	int i;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n");
+
+	ret = mutex_lock_interruptible(&video->lock);
+	if (ret)
+		return ret;
+
+	/*
+	 * If streaming is started return device busy
+	 * error
+	 */
+	if (video->started) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n");
+		ret = -EBUSY;
+		goto unlock_out;
+	}
+
+	sdinfo = video->current_ext_subdev;
+
+	if (!sdinfo->registered) {
+		ret = -EINVAL;
+		goto unlock_out;
+	}
+
+	if (vpfe_dev->cfg->setup_input &&
+		vpfe_dev->cfg->setup_input(sdinfo->grp_id) < 0) {
+		ret = -EFAULT;
+		v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+			  "couldn't setup input for %s\n",
+			  sdinfo->module_name);
+		goto unlock_out;
+	}
+
+	route = &sdinfo->routes[index];
+	if (route && sdinfo->can_route) {
+		input = route->input;
+		output = route->output;
+		ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
+						 sdinfo->grp_id, video,
+						 s_routing, input, output, 0);
+
+		if (ret) {
+			v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+				"s_input:error in setting input in decoder\n");
+			ret = -EINVAL;
+			goto unlock_out;
+		}
+	}
+
+	/* set standards set by subdev in video device */
+	for (i = 0; i < sdinfo->num_inputs; i++) {
+		inps = &sdinfo->inputs[i];
+		video->video_dev.tvnorms |= inps->std;
+	}
+
+	/* set the bus/interface parameter for the sub device in ccdc */
+	ret = ccdc_dev->hw_ops.set_hw_if_params(&sdinfo->ccdc_if_params);
+	if (ret)
+		goto unlock_out;
+
+	/* update the if parameters to imp hw interface */
+	if (imp_hw_if && imp_hw_if->set_hw_if_param)
+		ret = imp_hw_if->set_hw_if_param(vpfe_dev->ipipe,
+						 &sdinfo->ccdc_if_params);
+	if (ret)
+		goto unlock_out;
+
+	video->current_input = index;
+
+unlock_out:
+	mutex_unlock(&video->lock);
+	return ret;
+}
+
+/*
+ * vpfe_querystd() - query std which is being input on external subdev
+ * @file: file pointer
+ * @priv: void pointer
+ * @std_id: pointer to v4l2_std_id structure
+ *
+ * call external subdev through v4l2_device_call_until_err to
+ * get the std that is being active.
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_ext_subdev_info *sdinfo;
+	int ret;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n");
+
+	ret = mutex_lock_interruptible(&video->lock);
+	sdinfo = video->current_ext_subdev;
+	if (ret)
+		return ret;
+
+	/* Call querystd function of decoder device */
+	ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
+					 video, querystd, std_id);
+	mutex_unlock(&video->lock);
+
+	return ret;
+}
+
+/*
+ * vpfe_s_std() - set std on external subdev
+ * @file: file pointer
+ * @priv: void pointer
+ * @std_id: pointer to v4l2_std_id structure
+ *
+ * set std pointed by std_id on external subdev by calling it using
+ * v4l2_device_call_until_err
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_ext_subdev_info *sdinfo;
+	int ret;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n");
+
+	/* Call decoder driver function to set the standard */
+	ret = mutex_lock_interruptible(&video->lock);
+	if (ret)
+		return ret;
+
+	sdinfo = video->current_ext_subdev;
+	/* If streaming is started, return device busy error */
+	if (video->started) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n");
+		ret = -EBUSY;
+		goto unlock_out;
+	}
+
+	ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
+					 core, s_std, *std_id);
+	if (ret < 0) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n");
+		goto unlock_out;
+	}
+
+unlock_out:
+	mutex_unlock(&video->lock);
+	return ret;
+}
+
+/*
+ * vpfe_enum_preset() - enumerate dv_preset which are supported by
+ * to external subdev
+ *
+ * @file: file pointer
+ * @priv: void pointer
+ * @preset: pointer to v4l2_dv_enum_preset structure
+ *
+ * enum dv_preset's which are supported by external subdev through
+ * v4l2_subdev_call
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_enum_preset(struct file *file, void *fh,
+			    struct v4l2_dv_enum_preset *preset)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct v4l2_subdev *subdev = video->current_ext_subdev->subdev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_preset\n");
+
+	return v4l2_subdev_call(subdev, video, enum_dv_presets, preset);
+}
+
+/*
+ * vpfe_query_preset() - query the dv_preset which is being input
+ * to external subdev
+ *
+ * @file: file pointer
+ * @priv: void pointer
+ * @preset: pointer to v4l2_preset structure
+ *
+ * get dv_preset which is being input on external subdev through
+ * v4l2_subdev_call
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_query_preset(struct file *file, void *fh,
+			     struct v4l2_dv_preset *preset)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct v4l2_subdev *subdev = video->current_ext_subdev->subdev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_query_preset\n");
+
+	return v4l2_subdev_call(subdev, video, query_dv_preset, preset);
+}
+
+/*
+ * vpfe_s_preset() - set dv_preset on external subdev
+ * @file: file pointer
+ * @priv: void pointer
+ * @preset: pointer to v4l2_preset structure
+ *
+ * set dv_preset pointed by preset on external subdev through
+ * v4l2_device_call_until_err, this configures amplifier also
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_s_preset(struct file *file, void *fh,
+			 struct v4l2_dv_preset *preset)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_preset\n");
+
+	return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
+					  video->current_ext_subdev->grp_id,
+					  video, s_dv_preset, preset);
+}
+
+/*
+ * vpfe_g_preset() - get dv_preset which is set on external subdev
+ * @file: file pointer
+ * @priv: void pointer
+ * @preset: pointer to v4l2_preset structure
+ *
+ * get dv_preset which is set on external subdev through
+ * v4l2_subdev_call
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_g_preset(struct file *file, void *fh,
+			 struct v4l2_dv_preset *preset)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct v4l2_subdev *subdev = video->current_ext_subdev->subdev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_preset\n");
+
+	return v4l2_subdev_call(subdev, video, query_dv_preset, preset);
+}
+
+/*
+ *  Videobuf operations
+ */
+static int vpfe_videobuf_setup(struct videobuf_queue *vq,
+				unsigned int *count,
+				unsigned int *size)
+{
+	struct vpfe_fh *fh = vq->priv_data;
+	struct vpfe_video_device *video = fh->video;
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_pipeline *pipe = &video->pipe;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n");
+
+	*size = video->fmt.fmt.pix.sizeimage;
+
+	if (vpfe_dev->video_limit) {
+		while (*size * *count > vpfe_dev->video_limit)
+			(*count)--;
+	}
+
+	if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) {
+		if (*count < CONT_MIN_NUM_BUFFERS)
+			*count = CONT_MIN_NUM_BUFFERS;
+	}
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+		"count=%d, size=%d\n", *count, *size);
+
+	return 0;
+}
+
+static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
+				struct videobuf_buffer *vb,
+				enum v4l2_field field)
+{
+	struct vpfe_fh *fh = vq->priv_data;
+	struct vpfe_video_device *video = fh->video;
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	unsigned long addr;
+	int ret;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_videobuf_prepare\n");
+
+	if (VIDEOBUF_NEEDS_INIT != vb->state)
+		return 0;
+
+	/* Initialize buffer */
+	vb->width = video->fmt.fmt.pix.width;
+	vb->height = video->fmt.fmt.pix.height;
+	vb->size = video->fmt.fmt.pix.sizeimage;
+	vb->field = field;
+
+	ret = videobuf_iolock(vq, vb, NULL);
+	if (ret < 0)
+		return ret;
+
+	addr = videobuf_to_dma_contig(vb);
+	/* Make sure user addresses are aligned to 32 bytes */
+	if (!ALIGN(addr, 32))
+		return -EINVAL;
+
+	vb->state = VIDEOBUF_PREPARED;
+
+	return 0;
+}
+
+static void vpfe_videobuf_queue(struct videobuf_queue *vq,
+				struct videobuf_buffer *vb)
+{
+	/* Get the file handle object and device object */
+	struct vpfe_fh *fh = vq->priv_data;
+	struct vpfe_video_device *video = fh->video;
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_pipeline *pipe = &video->pipe;
+	unsigned long flags;
+	unsigned long empty;
+	unsigned long addr;
+
+	spin_lock_irqsave(&video->dma_queue_lock, flags);
+	empty = list_empty(&video->dma_queue);
+
+	/* add the buffer to the DMA queue */
+	list_add_tail(&vb->queue, &video->dma_queue);
+	spin_unlock_irqrestore(&video->dma_queue_lock, flags);
+
+	/* Change state of the buffer */
+	vb->state = VIDEOBUF_QUEUED;
+
+	/* this case happens in case of single shot */
+	if (empty && video->started && pipe->state ==
+		VPFE_PIPELINE_STREAM_SINGLESHOT &&
+		video->state == VPFE_VIDEO_BUFFER_NOT_QUEUED) {
+		spin_lock(&video->dma_queue_lock);
+		addr = vpfe_get_next_buffer(video);
+		video->ops->queue(vpfe_dev, addr);
+
+		video->state = VPFE_VIDEO_BUFFER_QUEUED;
+		spin_unlock(&video->dma_queue_lock);
+
+		/* enable h/w each time in single shot */
+		if (is_pipe_ready(pipe))
+			vpfe_pipeline_set_stream(pipe,
+					VPFE_PIPELINE_STREAM_SINGLESHOT);
+	}
+}
+
+static void vpfe_videobuf_release(struct videobuf_queue *vq,
+				  struct videobuf_buffer *vb)
+{
+	struct vpfe_fh *fh = vq->priv_data;
+	struct vpfe_video_device *video = fh->video;
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_videobuf_release\n");
+
+	if (video->memory == V4L2_MEMORY_MMAP)
+		videobuf_dma_contig_free(vq, vb);
+	vb->state = VIDEOBUF_NEEDS_INIT;
+}
+
+static struct videobuf_queue_ops vpfe_videobuf_qops = {
+	.buf_setup      = vpfe_videobuf_setup,
+	.buf_prepare    = vpfe_videobuf_prepare,
+	.buf_queue      = vpfe_videobuf_queue,
+	.buf_release    = vpfe_videobuf_release,
+};
+
+/*
+ * vpfe_reqbufs() - supported REQBUF only once opening
+ * the device.
+ */
+static int vpfe_reqbufs(struct file *file, void *priv,
+			struct v4l2_requestbuffers *req_buf)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_fh *fh = file->private_data;
+	int ret;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n");
+
+	if (V4L2_BUF_TYPE_VIDEO_CAPTURE != req_buf->type &&
+		V4L2_BUF_TYPE_VIDEO_OUTPUT != req_buf->type) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n");
+		return -EINVAL;
+	}
+
+	ret = mutex_lock_interruptible(&video->lock);
+	if (ret)
+		return ret;
+
+	if (video->io_usrs != 0) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n");
+		ret = -EBUSY;
+		goto unlock_out;
+	}
+
+	video->memory = req_buf->memory;
+	videobuf_queue_dma_contig_init(&video->buffer_queue,
+				&vpfe_videobuf_qops, vpfe_dev->pdev,
+				&video->irqlock, req_buf->type,
+				video->fmt.fmt.pix.field,
+				sizeof(struct videobuf_buffer),
+				fh, NULL);
+
+	fh->io_allowed = 1;
+	video->io_usrs = 1;
+	INIT_LIST_HEAD(&video->dma_queue);
+	ret = videobuf_reqbufs(&video->buffer_queue, req_buf);
+
+unlock_out:
+	mutex_unlock(&video->lock);
+	return ret;
+}
+
+/*
+ * vpfe_querybuf() - query buffers for exchange
+ */
+static int vpfe_querybuf(struct file *file, void *priv,
+			 struct v4l2_buffer *buf)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n");
+
+	if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type &&
+		V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
+		return  -EINVAL;
+	}
+
+	if (video->memory != V4L2_MEMORY_MMAP) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n");
+		return -EINVAL;
+	}
+
+	/* Call videobuf_querybuf to get information */
+	return videobuf_querybuf(&video->buffer_queue, buf);
+}
+
+/*
+ * vpfe_qbuf() - queue buffers for capture or processing
+ */
+static int vpfe_qbuf(struct file *file, void *priv,
+		     struct v4l2_buffer *p)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_fh *fh = file->private_data;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n");
+
+	if (V4L2_BUF_TYPE_VIDEO_CAPTURE != p->type &&
+		V4L2_BUF_TYPE_VIDEO_OUTPUT != p->type) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * If this file handle is not allowed to do IO,
+	 * return error
+	 */
+	if (!fh->io_allowed) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
+		return -EACCES;
+	}
+
+	return videobuf_qbuf(&video->buffer_queue, p);
+}
+
+/*
+ * vpfe_dqbuf() - deque buffer which is done with processing
+ */
+static int vpfe_dqbuf(struct file *file, void *priv,
+		      struct v4l2_buffer *buf)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n");
+
+	if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type &&
+		V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
+		return -EINVAL;
+	}
+
+	return videobuf_dqbuf(&video->buffer_queue,
+				      buf, file->f_flags & O_NONBLOCK);
+}
+
+/* vpfe_start_capture() - start streaming on all the subdevs */
+static int vpfe_start_capture(struct vpfe_video_device *video)
+{
+	struct vpfe_pipeline *pipe = &video->pipe;
+	int ret = 0;
+
+	video->started = 1;
+
+	if (is_pipe_ready(pipe))
+		ret = vpfe_pipeline_set_stream(pipe, pipe->state);
+
+	return ret;
+}
+
+/*
+ * vpfe_streamon() - get dv_preset which is set on external subdev
+ * @file: file pointer
+ * @priv: void pointer
+ * @buf_type: enum v4l2_buf_type
+ *
+ * queue buffer onto hardware for capture/processing and
+ * start all the subdevs which are in media chain
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_streamon(struct file *file, void *priv,
+			 enum v4l2_buf_type buf_type)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_pipeline *pipe = &video->pipe;
+	struct vpfe_fh *fh = file->private_data;
+	struct vpfe_ext_subdev_info *sdinfo;
+	unsigned long addr;
+	int ret = -EINVAL;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n");
+
+	if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type &&
+		V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
+		return ret;
+	}
+
+	/* If file handle is not allowed IO, return error */
+	if (!fh->io_allowed) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
+		return -EACCES;
+	}
+	sdinfo = video->current_ext_subdev;
+	/* If buffer queue is empty, return error */
+	if (list_empty(&video->buffer_queue.stream)) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n");
+		return -EIO;
+	}
+	/* Validate the pipeline */
+	if (V4L2_BUF_TYPE_VIDEO_CAPTURE == buf_type) {
+		ret = vpfe_video_validate_pipeline(pipe);
+		if (ret < 0)
+			return ret;
+	}
+	/* Call videobuf_streamon to start streaming * in videobuf */
+	ret = videobuf_streamon(&video->buffer_queue);
+	if (ret)
+		return ret;
+
+	ret = mutex_lock_interruptible(&video->lock);
+	if (ret)
+		goto streamoff;
+
+	/* Get the next frame from the buffer queue */
+	video->next_frm = list_entry(video->dma_queue.next,
+					struct videobuf_buffer, queue);
+	video->cur_frm = video->next_frm;
+	/* Remove buffer from the buffer queue */
+	list_del(&video->cur_frm->queue);
+	/* Mark state of the current frame to active */
+	video->cur_frm->state = VIDEOBUF_ACTIVE;
+	/* Initialize field_id and started member */
+	video->field_id = 0;
+	addr = videobuf_to_dma_contig(video->cur_frm);
+	video->ops->queue(vpfe_dev, addr);
+	video->state = VPFE_VIDEO_BUFFER_QUEUED;
+	ret = vpfe_start_capture(video);
+	if (ret)
+		goto unlock_out;
+
+	mutex_unlock(&video->lock);
+	return ret;
+unlock_out:
+	mutex_unlock(&video->lock);
+streamoff:
+	ret = videobuf_streamoff(&video->buffer_queue);
+	return ret;
+}
+
+/*
+ * vpfe_streamoff() - get dv_preset which is set on external subdev
+ * @file: file pointer
+ * @priv: void pointer
+ * @buf_type: enum v4l2_buf_type
+ *
+ * stop all the subdevs which are in media chain
+ *
+ * Return 0 on success, error code otherwise
+ */
+static int vpfe_streamoff(struct file *file, void *priv,
+			  enum v4l2_buf_type buf_type)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_fh *fh = file->private_data;
+	int ret = 0;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n");
+
+	if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
+		buf_type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+		v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "Invalid buf type\n");
+		return -EINVAL;
+	}
+
+	/* If io is allowed for this file handle, return error */
+	if (!fh->io_allowed) {
+		v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "fh->io_allowed\n");
+		return -EACCES;
+	}
+
+	/* If streaming is not started, return error */
+	if (!video->started) {
+		v4l2_err(&vpfe_dev->v4l2_dev, "device is not started\n");
+		return -EINVAL;
+	}
+
+	ret = mutex_lock_interruptible(&video->lock);
+	if (ret)
+		return ret;
+
+	vpfe_stop_capture(video);
+
+	ret = videobuf_streamoff(&video->buffer_queue);
+	mutex_unlock(&video->lock);
+
+	return ret;
+}
+
+/*
+ * vpfe_queryctrl() - query for v4l2 controls which is set on external subdev
+ * @file: file pointer
+ * @priv: void pointer
+ * @ctrl: pointer to v4l2_control structure
+ *
+ * get the v4l2 controls active on external subdev through
+ * v4l2_device_call_until_err
+ *
+ * Return return value returned by v4l2_device_call_until_err
+ */
+static int vpfe_queryctrl(struct file *file, void *priv,
+				struct v4l2_queryctrl *qc)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_ext_subdev_info *sub_dev = video->current_ext_subdev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_queryctrl\n");
+
+	/* pass it to sub device */
+	return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sub_dev->grp_id,
+					  core, queryctrl, qc);
+}
+
+/*
+ * vpfe_g_ctrl() - get the v4l2 controls which is set on external subdev
+ * @file: file pointer
+ * @priv: void pointer
+ * @ctrl: pointer to v4l2_control structure
+ *
+ * get the v4l2 controls set on external subdev through
+ * v4l2_device_call_until_err
+ *
+ * Return return value returned by v4l2_device_call_until_err
+ */
+static int vpfe_g_ctrl(struct file *file, void *priv,
+			struct v4l2_control *ctrl)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_ext_subdev_info *sub_dev = video->current_ext_subdev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_ctrl\n");
+
+	return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sub_dev->grp_id,
+					  core, g_ctrl, ctrl);
+}
+
+/*
+ * vpfe_s_ctrl() - set the v4l2 controls on external subdev
+ * @file: file pointer
+ * @priv: void pointer
+ * @ctrl: pointer to v4l2_control structure
+ *
+ * call external subdev through v4l2_device_call_until_err to
+ * set v4l2 controls
+ *
+ * Return return value returned by v4l2_device_call_until_err
+ */
+static int vpfe_s_ctrl(struct file *file, void *priv,
+			     struct v4l2_control *ctrl)
+{
+	struct vpfe_video_device *video = video_drvdata(file);
+	struct vpfe_device *vpfe_dev = video->vpfe_dev;
+	struct vpfe_ext_subdev_info *sub_dev = video->current_ext_subdev;
+
+	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_ctrl\n");
+
+	return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sub_dev->grp_id,
+					  core, s_ctrl, ctrl);
+}
+
+/* vpfe capture ioctl operations */
+static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
+	.vidioc_querycap	 = vpfe_querycap,
+	.vidioc_g_fmt_vid_cap    = vpfe_g_fmt,
+	.vidioc_s_fmt_vid_cap    = vpfe_s_fmt,
+	.vidioc_try_fmt_vid_cap  = vpfe_try_fmt,
+	.vidioc_enum_fmt_vid_cap = vpfe_enum_fmt,
+	.vidioc_g_fmt_vid_out    = vpfe_g_fmt,
+	.vidioc_s_fmt_vid_out    = vpfe_s_fmt,
+	.vidioc_try_fmt_vid_out  = vpfe_try_fmt,
+	.vidioc_enum_fmt_vid_out = vpfe_enum_fmt,
+	.vidioc_enum_input	 = vpfe_enum_input,
+	.vidioc_g_input		 = vpfe_g_input,
+	.vidioc_s_input		 = vpfe_s_input,
+	.vidioc_querystd	 = vpfe_querystd,
+	.vidioc_s_std		 = vpfe_s_std,
+	.vidioc_enum_dv_presets	 = vpfe_enum_preset,
+	.vidioc_query_dv_preset	 = vpfe_query_preset,
+	.vidioc_s_dv_preset	 = vpfe_s_preset,
+	.vidioc_g_dv_preset	 = vpfe_g_preset,
+	.vidioc_reqbufs		 = vpfe_reqbufs,
+	.vidioc_querybuf	 = vpfe_querybuf,
+	.vidioc_qbuf		 = vpfe_qbuf,
+	.vidioc_dqbuf		 = vpfe_dqbuf,
+	.vidioc_streamon	 = vpfe_streamon,
+	.vidioc_streamoff	 = vpfe_streamoff,
+	.vidioc_queryctrl	 = vpfe_queryctrl,
+	.vidioc_g_ctrl		 = vpfe_g_ctrl,
+	.vidioc_s_ctrl		 = vpfe_s_ctrl,
+};
+
+/* VPFE video init function */
+int vpfe_video_init(struct vpfe_video_device *video, const char *name)
+{
+	const char *direction;
+	int ret;
+
+	switch (video->type) {
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+		direction = "output";
+		video->pad.flags = MEDIA_PAD_FL_SINK;
+		video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+		break;
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+		direction = "input";
+		video->pad.flags = MEDIA_PAD_FL_SOURCE;
+		video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* Initialize field of video device */
+	video->video_dev.release = video_device_release;
+	video->video_dev.fops = &vpfe_fops;
+	video->video_dev.ioctl_ops = &vpfe_ioctl_ops;
+	video->video_dev.minor = -1;
+	video->video_dev.tvnorms = 0;
+	video->video_dev.current_norm = V4L2_STD_NTSC;
+
+	snprintf(video->video_dev.name, sizeof(video->video_dev.name),
+		 "DAVINCI VIDEO %s %s", name, direction);
+
+	/* Initialize prio member of device object */
+	v4l2_prio_init(&video->prio);
+
+	spin_lock_init(&video->irqlock);
+	spin_lock_init(&video->dma_queue_lock);
+	mutex_init(&video->lock);
+
+	ret = media_entity_init(&video->video_dev.entity,
+				1, &video->pad, 0);
+	if (ret < 0)
+		return ret;
+
+	video_set_drvdata(&video->video_dev, video);
+
+	return 0;
+}
+
+/* vpfe video device register function */
+int vpfe_video_register(struct vpfe_video_device *video,
+			struct v4l2_device *vdev)
+{
+	int ret;
+
+	video->video_dev.v4l2_dev = vdev;
+
+	ret = video_register_device(&video->video_dev, VFL_TYPE_GRABBER, -1);
+	if (ret < 0)
+		pr_err("%s: could not register video device (%d)\n",
+		       __func__, ret);
+
+	return ret;
+}
+
+/* vpfe video device unregister function */
+void vpfe_video_unregister(struct vpfe_video_device *video)
+{
+	if (video_is_registered(&video->video_dev)) {
+		media_entity_cleanup(&video->video_dev.entity);
+		video_unregister_device(&video->video_dev);
+	}
+}
diff --git a/drivers/media/platform/davinci/vpfe_video.h b/drivers/media/platform/davinci/vpfe_video.h
new file mode 100644
index 0000000..af68caf
--- /dev/null
+++ b/drivers/media/platform/davinci/vpfe_video.h
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2012 Texas Instruments Inc
+ *
+ * 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 version 2.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ * Contributors:
+ *      Manjunath Hadli <manjunath.hadli@ti.com>
+ *      Prabhakar Lad <prabhakar.lad@ti.com>
+ */
+
+/* All video device related structures will go here */
+#ifndef _VPFE_VIDEO_H
+#define _VPFE_VIDEO_H
+
+#include <media/media-entity.h>
+#include <media/videobuf-dma-contig.h>
+
+struct vpfe_device;
+
+/*
+ * struct vpfe_video_operations - VPFE video operations
+ * @queue:	Resume streaming when a buffer is queued. Called on VIDIOC_QBUF
+ *		if there was no buffer previously queued.
+ */
+struct vpfe_video_operations {
+	void(*queue)(struct vpfe_device *vpfe_dev, unsigned long addr);
+};
+
+enum vpfe_pipeline_stream_state {
+	VPFE_PIPELINE_STREAM_STOPPED,
+	VPFE_PIPELINE_STREAM_CONTINUOUS,
+	VPFE_PIPELINE_STREAM_SINGLESHOT
+};
+
+enum vpfe_video_state {
+	/* indicates that buffer is not queued */
+	VPFE_VIDEO_BUFFER_NOT_QUEUED = 0,
+	/* indicates that buffer is queued */
+	VPFE_VIDEO_BUFFER_QUEUED = 1,
+};
+
+struct vpfe_pipeline {
+	/* media pipeline */
+	struct media_pipeline		*pipe;
+	/* state of the pipeline, continous,
+	single-shot or stopped */
+	enum vpfe_pipeline_stream_state	state;
+	/* number of active input video entities */
+	unsigned int			input_num;
+	/* number of active output video entities */
+	unsigned int			output_num;
+	/* input video nodes in case of single-shot mode */
+	struct vpfe_video_device	*inputs[10];
+	/* capturing video nodes */
+	struct vpfe_video_device	*outputs[10];
+};
+
+#define to_vpfe_pipeline(__e) \
+	container_of((__e)->pipe, struct vpfe_pipeline, pipe)
+
+#define to_vpfe_video(vdev) \
+	container_of(vdev, struct vpfe_video_device, video_dev)
+
+struct vpfe_video_device {
+	/* vpfe device */
+	struct vpfe_device			*vpfe_dev;
+	/* video dev */
+	struct video_device			video_dev;
+	/* media pad of video entity */
+	struct media_pad			pad;
+	/* video operations supported by video device */
+	const struct vpfe_video_operations	*ops;
+	/* type of the video buffers used by user */
+	enum v4l2_buf_type			type;
+	/* Indicates id of the field which is being captured */
+	u32					field_id;
+	/* pipiline for which video device is part of */
+	struct vpfe_pipeline			pipe;
+	/* Indicates whether streaming started */
+	u8					started;
+	/* Indicates state of the stream */
+	unsigned int				state;
+	/* current input at the sub device */
+	int					current_input;
+	/*
+	 * This field keeps track of type of buffer exchange mechanism
+	 * user has selected
+	 */
+	enum v4l2_memory			memory;
+	/* Used to keep track of state of the priority */
+	struct v4l2_prio_state			prio;
+	/* number of open instances of the channel */
+	u32					usrs;
+	/* flag to indicate whether decoder is initialized */
+	u8					initialized;
+	/* skip frame count */
+	u8					skip_frame_count;
+	/* skip frame count init value */
+	u8					skip_frame_count_init;
+	/* time per frame for skipping */
+	struct v4l2_fract			timeperframe;
+	/* ptr to currently selected sub device */
+	struct vpfe_ext_subdev_info		*current_ext_subdev;
+	/* Pointer pointing to current v4l2_buffer */
+	struct videobuf_buffer			*cur_frm;
+	/* Pointer pointing to next v4l2_buffer */
+	struct videobuf_buffer			*next_frm;
+	/* Used to store pixel format */
+	struct v4l2_format			fmt;
+	/* Buffer queue used in video-buf */
+	struct videobuf_queue			buffer_queue;
+	/* Queue of filled frames */
+	struct list_head			dma_queue;
+	/* Used in video-buf */
+	spinlock_t				irqlock;
+	/* IRQ lock for DMA queue */
+	spinlock_t				dma_queue_lock;
+	/* lock used to access this structure */
+	struct mutex				lock;
+	/* number of users performing IO */
+	u32					io_usrs;
+	/*
+	 * offset where second field starts from the starting of the
+	 * buffer for field seperated YCbCr formats
+	 */
+	u32					field_off;
+};
+
+int is_pipe_ready(struct vpfe_pipeline *pipe);
+void vpfe_video_unregister(struct vpfe_video_device *video);
+int vpfe_video_register(struct vpfe_video_device *video,
+			struct v4l2_device *vdev);
+int vpfe_video_init(struct vpfe_video_device *video, const char *name);
+
+void vpfe_process_buffer_complete(struct vpfe_video_device *video);
+void vpfe_schedule_bottom_field(struct vpfe_video_device *video);
+void vpfe_schedule_next_buffer(struct vpfe_video_device *video);
+unsigned long vpfe_get_next_buffer(struct vpfe_video_device *video);
+#endif
