[media] rename drivers/media/video as .../platform

The remaining drivers are mostly platform drivers. Name the
dir to reflect it.

It makes sense to latter break it into a few other dirs.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 2456 deletions

diff --git a/drivers/media/video/davinci/vpif_capture.c b/drivers/media/video/davinci/vpif_capture.c
deleted file mode 100644
index 1b625b065c32..000000000000
--- a/drivers/media/video/davinci/vpif_capture.c
+++ /dev/null
@@ -1,2456 +0,0 @@
-/*
- * Copyright (C) 2009 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; 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- *
- * TODO : add support for VBI & HBI data service
- *	  add static buffer allocation
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/interrupt.h>
-#include <linux/workqueue.h>
-#include <linux/string.h>
-#include <linux/videodev2.h>
-#include <linux/wait.h>
-#include <linux/time.h>
-#include <linux/i2c.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-chip-ident.h>
-
-#include "vpif_capture.h"
-#include "vpif.h"
-
-MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(VPIF_CAPTURE_VERSION);
-
-#define vpif_err(fmt, arg...)	v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
-#define vpif_dbg(level, debug, fmt, arg...)	\
-		v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
-
-static int debug = 1;
-static u32 ch0_numbuffers = 3;
-static u32 ch1_numbuffers = 3;
-static u32 ch0_bufsize = 1920 * 1080 * 2;
-static u32 ch1_bufsize = 720 * 576 * 2;
-
-module_param(debug, int, 0644);
-module_param(ch0_numbuffers, uint, S_IRUGO);
-module_param(ch1_numbuffers, uint, S_IRUGO);
-module_param(ch0_bufsize, uint, S_IRUGO);
-module_param(ch1_bufsize, uint, S_IRUGO);
-
-MODULE_PARM_DESC(debug, "Debug level 0-1");
-MODULE_PARM_DESC(ch2_numbuffers, "Channel0 buffer count (default:3)");
-MODULE_PARM_DESC(ch3_numbuffers, "Channel1 buffer count (default:3)");
-MODULE_PARM_DESC(ch2_bufsize, "Channel0 buffer size (default:1920 x 1080 x 2)");
-MODULE_PARM_DESC(ch3_bufsize, "Channel1 buffer size (default:720 x 576 x 2)");
-
-static struct vpif_config_params config_params = {
-	.min_numbuffers = 3,
-	.numbuffers[0] = 3,
-	.numbuffers[1] = 3,
-	.min_bufsize[0] = 720 * 480 * 2,
-	.min_bufsize[1] = 720 * 480 * 2,
-	.channel_bufsize[0] = 1920 * 1080 * 2,
-	.channel_bufsize[1] = 720 * 576 * 2,
-};
-
-/* global variables */
-static struct vpif_device vpif_obj = { {NULL} };
-static struct device *vpif_dev;
-static void vpif_calculate_offsets(struct channel_obj *ch);
-static void vpif_config_addr(struct channel_obj *ch, int muxmode);
-
-/**
- * buffer_prepare :  callback function for buffer prepare
- * @vb: ptr to vb2_buffer
- *
- * This is the callback function for buffer prepare when vb2_qbuf()
- * function is called. The buffer is prepared and user space virtual address
- * or user address is converted into  physical address
- */
-static int vpif_buffer_prepare(struct vb2_buffer *vb)
-{
-	/* Get the file handle object and channel object */
-	struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
-	struct vb2_queue *q = vb->vb2_queue;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common;
-	unsigned long addr;
-
-	vpif_dbg(2, debug, "vpif_buffer_prepare\n");
-
-	common = &ch->common[VPIF_VIDEO_INDEX];
-
-	if (vb->state != VB2_BUF_STATE_ACTIVE &&
-		vb->state != VB2_BUF_STATE_PREPARED) {
-		vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
-		if (vb2_plane_vaddr(vb, 0) &&
-		vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
-			goto exit;
-		addr = vb2_dma_contig_plane_dma_addr(vb, 0);
-
-		if (q->streaming) {
-			if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
-				!IS_ALIGNED((addr + common->ybtm_off), 8) ||
-				!IS_ALIGNED((addr + common->ctop_off), 8) ||
-				!IS_ALIGNED((addr + common->cbtm_off), 8))
-				goto exit;
-		}
-	}
-	return 0;
-exit:
-	vpif_dbg(1, debug, "buffer_prepare:offset is not aligned to 8 bytes\n");
-	return -EINVAL;
-}
-
-/**
- * vpif_buffer_queue_setup : Callback function for buffer setup.
- * @vq: vb2_queue ptr
- * @fmt: v4l2 format
- * @nbuffers: ptr to number of buffers requested by application
- * @nplanes:: contains number of distinct video planes needed to hold a frame
- * @sizes[]: contains the size (in bytes) of each plane.
- * @alloc_ctxs: ptr to allocation context
- *
- * This callback function is called when reqbuf() is called to adjust
- * the buffer count and buffer size
- */
-static int vpif_buffer_queue_setup(struct vb2_queue *vq,
-				const struct v4l2_format *fmt,
-				unsigned int *nbuffers, unsigned int *nplanes,
-				unsigned int sizes[], void *alloc_ctxs[])
-{
-	/* Get the file handle object and channel object */
-	struct vpif_fh *fh = vb2_get_drv_priv(vq);
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common;
-	unsigned long size;
-
-	common = &ch->common[VPIF_VIDEO_INDEX];
-
-	vpif_dbg(2, debug, "vpif_buffer_setup\n");
-
-	/* If memory type is not mmap, return */
-	if (V4L2_MEMORY_MMAP == common->memory) {
-		/* Calculate the size of the buffer */
-		size = config_params.channel_bufsize[ch->channel_id];
-		/*
-		 * Checking if the buffer size exceeds the available buffer
-		 * ycmux_mode = 0 means 1 channel mode HD and
-		 * ycmux_mode = 1 means 2 channels mode SD
-		 */
-		if (ch->vpifparams.std_info.ycmux_mode == 0) {
-			if (config_params.video_limit[ch->channel_id])
-				while (size * *nbuffers >
-					(config_params.video_limit[0]
-						+ config_params.video_limit[1]))
-					(*nbuffers)--;
-		} else {
-			if (config_params.video_limit[ch->channel_id])
-				while (size * *nbuffers >
-				config_params.video_limit[ch->channel_id])
-					(*nbuffers)--;
-		}
-
-	} else {
-		size = common->fmt.fmt.pix.sizeimage;
-	}
-
-	if (*nbuffers < config_params.min_numbuffers)
-		*nbuffers = config_params.min_numbuffers;
-
-	*nplanes = 1;
-	sizes[0] = size;
-	alloc_ctxs[0] = common->alloc_ctx;
-
-	return 0;
-}
-
-/**
- * vpif_buffer_queue : Callback function to add buffer to DMA queue
- * @vb: ptr to vb2_buffer
- */
-static void vpif_buffer_queue(struct vb2_buffer *vb)
-{
-	/* Get the file handle object and channel object */
-	struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
-	struct channel_obj *ch = fh->channel;
-	struct vpif_cap_buffer *buf = container_of(vb,
-				struct vpif_cap_buffer, vb);
-	struct common_obj *common;
-
-	common = &ch->common[VPIF_VIDEO_INDEX];
-
-	vpif_dbg(2, debug, "vpif_buffer_queue\n");
-
-	/* add the buffer to the DMA queue */
-	list_add_tail(&buf->list, &common->dma_queue);
-}
-
-/**
- * vpif_buf_cleanup : Callback function to free buffer
- * @vb: ptr to vb2_buffer
- *
- * This function is called from the videobuf2 layer to free memory
- * allocated to  the buffers
- */
-static void vpif_buf_cleanup(struct vb2_buffer *vb)
-{
-	/* Get the file handle object and channel object */
-	struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
-	struct vpif_cap_buffer *buf = container_of(vb,
-					struct vpif_cap_buffer, vb);
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common;
-	unsigned long flags;
-
-	common = &ch->common[VPIF_VIDEO_INDEX];
-
-	spin_lock_irqsave(&common->irqlock, flags);
-	if (vb->state == VB2_BUF_STATE_ACTIVE)
-		list_del_init(&buf->list);
-	spin_unlock_irqrestore(&common->irqlock, flags);
-
-}
-
-static void vpif_wait_prepare(struct vb2_queue *vq)
-{
-	struct vpif_fh *fh = vb2_get_drv_priv(vq);
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common;
-
-	common = &ch->common[VPIF_VIDEO_INDEX];
-	mutex_unlock(&common->lock);
-}
-
-static void vpif_wait_finish(struct vb2_queue *vq)
-{
-	struct vpif_fh *fh = vb2_get_drv_priv(vq);
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common;
-
-	common = &ch->common[VPIF_VIDEO_INDEX];
-	mutex_lock(&common->lock);
-}
-
-static int vpif_buffer_init(struct vb2_buffer *vb)
-{
-	struct vpif_cap_buffer *buf = container_of(vb,
-					struct vpif_cap_buffer, vb);
-
-	INIT_LIST_HEAD(&buf->list);
-
-	return 0;
-}
-
-static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] =
-	{ {1, 1} };
-
-static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
-{
-	struct vpif_capture_config *vpif_config_data =
-					vpif_dev->platform_data;
-	struct vpif_fh *fh = vb2_get_drv_priv(vq);
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	struct vpif_params *vpif = &ch->vpifparams;
-	unsigned long addr = 0;
-	int ret;
-
-		/* If buffer queue is empty, return error */
-	if (list_empty(&common->dma_queue)) {
-		vpif_dbg(1, debug, "buffer queue is empty\n");
-		return -EIO;
-	}
-
-	/* Get the next frame from the buffer queue */
-	common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
-				    struct vpif_cap_buffer, list);
-	/* Remove buffer from the buffer queue */
-	list_del(&common->cur_frm->list);
-	/* Mark state of the current frame to active */
-	common->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
-	/* Initialize field_id and started member */
-	ch->field_id = 0;
-	common->started = 1;
-	addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
-
-	/* Calculate the offset for Y and C data in the buffer */
-	vpif_calculate_offsets(ch);
-
-	if ((vpif->std_info.frm_fmt &&
-	    ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) &&
-	     (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) ||
-	    (!vpif->std_info.frm_fmt &&
-	     (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) {
-		vpif_dbg(1, debug, "conflict in field format and std format\n");
-		return -EINVAL;
-	}
-
-	/* configure 1 or 2 channel mode */
-	ret = vpif_config_data->setup_input_channel_mode
-					(vpif->std_info.ycmux_mode);
-
-	if (ret < 0) {
-		vpif_dbg(1, debug, "can't set vpif channel mode\n");
-		return ret;
-	}
-
-	/* Call vpif_set_params function to set the parameters and addresses */
-	ret = vpif_set_video_params(vpif, ch->channel_id);
-
-	if (ret < 0) {
-		vpif_dbg(1, debug, "can't set video params\n");
-		return ret;
-	}
-
-	common->started = ret;
-	vpif_config_addr(ch, ret);
-
-	common->set_addr(addr + common->ytop_off,
-			 addr + common->ybtm_off,
-			 addr + common->ctop_off,
-			 addr + common->cbtm_off);
-
-	/**
-	 * Set interrupt for both the fields in VPIF Register enable channel in
-	 * VPIF register
-	 */
-	if ((VPIF_CHANNEL0_VIDEO == ch->channel_id)) {
-		channel0_intr_assert();
-		channel0_intr_enable(1);
-		enable_channel0(1);
-	}
-	if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) ||
-	    (common->started == 2)) {
-		channel1_intr_assert();
-		channel1_intr_enable(1);
-		enable_channel1(1);
-	}
-	channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
-
-	return 0;
-}
-
-/* abort streaming and wait for last buffer */
-static int vpif_stop_streaming(struct vb2_queue *vq)
-{
-	struct vpif_fh *fh = vb2_get_drv_priv(vq);
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common;
-
-	if (!vb2_is_streaming(vq))
-		return 0;
-
-	common = &ch->common[VPIF_VIDEO_INDEX];
-
-	/* release all active buffers */
-	while (!list_empty(&common->dma_queue)) {
-		common->next_frm = list_entry(common->dma_queue.next,
-						struct vpif_cap_buffer, list);
-		list_del(&common->next_frm->list);
-		vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR);
-	}
-
-	return 0;
-}
-
-static struct vb2_ops video_qops = {
-	.queue_setup		= vpif_buffer_queue_setup,
-	.wait_prepare		= vpif_wait_prepare,
-	.wait_finish		= vpif_wait_finish,
-	.buf_init		= vpif_buffer_init,
-	.buf_prepare		= vpif_buffer_prepare,
-	.start_streaming	= vpif_start_streaming,
-	.stop_streaming		= vpif_stop_streaming,
-	.buf_cleanup		= vpif_buf_cleanup,
-	.buf_queue		= vpif_buffer_queue,
-};
-
-/**
- * vpif_process_buffer_complete: process a completed buffer
- * @common: ptr to common channel object
- *
- * This function time stamp the buffer and mark it as DONE. It also
- * wake up any process waiting on the QUEUE and set the next buffer
- * as current
- */
-static void vpif_process_buffer_complete(struct common_obj *common)
-{
-	do_gettimeofday(&common->cur_frm->vb.v4l2_buf.timestamp);
-	vb2_buffer_done(&common->cur_frm->vb,
-					    VB2_BUF_STATE_DONE);
-	/* Make curFrm pointing to nextFrm */
-	common->cur_frm = common->next_frm;
-}
-
-/**
- * vpif_schedule_next_buffer: set next buffer address for capture
- * @common : ptr to common channel object
- *
- * This function will get next buffer from the dma queue and
- * set the buffer address in the vpif register for capture.
- * the buffer is marked active
- */
-static void vpif_schedule_next_buffer(struct common_obj *common)
-{
-	unsigned long addr = 0;
-
-	common->next_frm = list_entry(common->dma_queue.next,
-				     struct vpif_cap_buffer, list);
-	/* Remove that buffer from the buffer queue */
-	list_del(&common->next_frm->list);
-	common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
-	addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
-
-	/* Set top and bottom field addresses in VPIF registers */
-	common->set_addr(addr + common->ytop_off,
-			 addr + common->ybtm_off,
-			 addr + common->ctop_off,
-			 addr + common->cbtm_off);
-}
-
-/**
- * vpif_channel_isr : ISR handler for vpif capture
- * @irq: irq number
- * @dev_id: dev_id ptr
- *
- * It changes status of the captured buffer, takes next buffer from the queue
- * and sets its address in VPIF registers
- */
-static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
-{
-	struct vpif_device *dev = &vpif_obj;
-	struct common_obj *common;
-	struct channel_obj *ch;
-	enum v4l2_field field;
-	int channel_id = 0;
-	int fid = -1, i;
-
-	channel_id = *(int *)(dev_id);
-	if (!vpif_intr_status(channel_id))
-		return IRQ_NONE;
-
-	ch = dev->dev[channel_id];
-
-	field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
-
-	for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
-		common = &ch->common[i];
-		/* skip If streaming is not started in this channel */
-		if (0 == common->started)
-			continue;
-
-		/* Check the field format */
-		if (1 == ch->vpifparams.std_info.frm_fmt) {
-			/* Progressive mode */
-			if (list_empty(&common->dma_queue))
-				continue;
-
-			if (!channel_first_int[i][channel_id])
-				vpif_process_buffer_complete(common);
-
-			channel_first_int[i][channel_id] = 0;
-
-			vpif_schedule_next_buffer(common);
-
-
-			channel_first_int[i][channel_id] = 0;
-		} else {
-			/**
-			 * Interlaced mode. If it is first interrupt, ignore
-			 * it
-			 */
-			if (channel_first_int[i][channel_id]) {
-				channel_first_int[i][channel_id] = 0;
-				continue;
-			}
-			if (0 == i) {
-				ch->field_id ^= 1;
-				/* Get field id from VPIF registers */
-				fid = vpif_channel_getfid(ch->channel_id);
-				if (fid != ch->field_id) {
-					/**
-					 * If field id does not match stored
-					 * field id, make them in sync
-					 */
-					if (0 == fid)
-						ch->field_id = fid;
-					return IRQ_HANDLED;
-				}
-			}
-			/* device field id and local field id are in sync */
-			if (0 == fid) {
-				/* this is even field */
-				if (common->cur_frm == common->next_frm)
-					continue;
-
-				/* mark the current buffer as done */
-				vpif_process_buffer_complete(common);
-			} else if (1 == fid) {
-				/* odd field */
-				if (list_empty(&common->dma_queue) ||
-				    (common->cur_frm != common->next_frm))
-					continue;
-
-				vpif_schedule_next_buffer(common);
-			}
-		}
-	}
-	return IRQ_HANDLED;
-}
-
-/**
- * vpif_update_std_info() - update standard related info
- * @ch: ptr to channel object
- *
- * For a given standard selected by application, update values
- * in the device data structures
- */
-static int vpif_update_std_info(struct channel_obj *ch)
-{
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	struct vpif_params *vpifparams = &ch->vpifparams;
-	const struct vpif_channel_config_params *config;
-	struct vpif_channel_config_params *std_info = &vpifparams->std_info;
-	struct video_obj *vid_ch = &ch->video;
-	int index;
-
-	vpif_dbg(2, debug, "vpif_update_std_info\n");
-
-	for (index = 0; index < vpif_ch_params_count; index++) {
-		config = &ch_params[index];
-		if (config->hd_sd == 0) {
-			vpif_dbg(2, debug, "SD format\n");
-			if (config->stdid & vid_ch->stdid) {
-				memcpy(std_info, config, sizeof(*config));
-				break;
-			}
-		} else {
-			vpif_dbg(2, debug, "HD format\n");
-			if (config->dv_preset == vid_ch->dv_preset) {
-				memcpy(std_info, config, sizeof(*config));
-				break;
-			}
-		}
-	}
-
-	/* standard not found */
-	if (index == vpif_ch_params_count)
-		return -EINVAL;
-
-	common->fmt.fmt.pix.width = std_info->width;
-	common->width = std_info->width;
-	common->fmt.fmt.pix.height = std_info->height;
-	common->height = std_info->height;
-	common->fmt.fmt.pix.bytesperline = std_info->width;
-	vpifparams->video_params.hpitch = std_info->width;
-	vpifparams->video_params.storage_mode = std_info->frm_fmt;
-
-	return 0;
-}
-
-/**
- * vpif_calculate_offsets : This function calculates buffers offsets
- * @ch : ptr to channel object
- *
- * This function calculates buffer offsets for Y and C in the top and
- * bottom field
- */
-static void vpif_calculate_offsets(struct channel_obj *ch)
-{
-	unsigned int hpitch, vpitch, sizeimage;
-	struct video_obj *vid_ch = &(ch->video);
-	struct vpif_params *vpifparams = &ch->vpifparams;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	enum v4l2_field field = common->fmt.fmt.pix.field;
-
-	vpif_dbg(2, debug, "vpif_calculate_offsets\n");
-
-	if (V4L2_FIELD_ANY == field) {
-		if (vpifparams->std_info.frm_fmt)
-			vid_ch->buf_field = V4L2_FIELD_NONE;
-		else
-			vid_ch->buf_field = V4L2_FIELD_INTERLACED;
-	} else
-		vid_ch->buf_field = common->fmt.fmt.pix.field;
-
-	sizeimage = common->fmt.fmt.pix.sizeimage;
-
-	hpitch = common->fmt.fmt.pix.bytesperline;
-	vpitch = sizeimage / (hpitch * 2);
-
-	if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
-	    (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
-		/* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
-		common->ytop_off = 0;
-		common->ybtm_off = hpitch;
-		common->ctop_off = sizeimage / 2;
-		common->cbtm_off = sizeimage / 2 + hpitch;
-	} else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
-		/* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
-		common->ytop_off = 0;
-		common->ybtm_off = sizeimage / 4;
-		common->ctop_off = sizeimage / 2;
-		common->cbtm_off = common->ctop_off + sizeimage / 4;
-	} else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
-		/* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
-		common->ybtm_off = 0;
-		common->ytop_off = sizeimage / 4;
-		common->cbtm_off = sizeimage / 2;
-		common->ctop_off = common->cbtm_off + sizeimage / 4;
-	}
-	if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
-	    (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
-		vpifparams->video_params.storage_mode = 1;
-	else
-		vpifparams->video_params.storage_mode = 0;
-
-	if (1 == vpifparams->std_info.frm_fmt)
-		vpifparams->video_params.hpitch =
-		    common->fmt.fmt.pix.bytesperline;
-	else {
-		if ((field == V4L2_FIELD_ANY)
-		    || (field == V4L2_FIELD_INTERLACED))
-			vpifparams->video_params.hpitch =
-			    common->fmt.fmt.pix.bytesperline * 2;
-		else
-			vpifparams->video_params.hpitch =
-			    common->fmt.fmt.pix.bytesperline;
-	}
-
-	ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
-}
-
-/**
- * vpif_config_format: configure default frame format in the device
- * ch : ptr to channel object
- */
-static void vpif_config_format(struct channel_obj *ch)
-{
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-
-	vpif_dbg(2, debug, "vpif_config_format\n");
-
-	common->fmt.fmt.pix.field = V4L2_FIELD_ANY;
-	if (config_params.numbuffers[ch->channel_id] == 0)
-		common->memory = V4L2_MEMORY_USERPTR;
-	else
-		common->memory = V4L2_MEMORY_MMAP;
-
-	common->fmt.fmt.pix.sizeimage
-	    = config_params.channel_bufsize[ch->channel_id];
-
-	if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
-		common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
-	else
-		common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
-	common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-}
-
-/**
- * vpif_get_default_field() - Get default field type based on interface
- * @vpif_params - ptr to vpif params
- */
-static inline enum v4l2_field vpif_get_default_field(
-				struct vpif_interface *iface)
-{
-	return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
-						V4L2_FIELD_INTERLACED;
-}
-
-/**
- * vpif_check_format()  - check given pixel format for compatibility
- * @ch - channel  ptr
- * @pixfmt - Given pixel format
- * @update - update the values as per hardware requirement
- *
- * Check the application pixel format for S_FMT and update the input
- * values as per hardware limits for TRY_FMT. The default pixel and
- * field format is selected based on interface type.
- */
-static int vpif_check_format(struct channel_obj *ch,
-			     struct v4l2_pix_format *pixfmt,
-			     int update)
-{
-	struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
-	struct vpif_params *vpif_params = &ch->vpifparams;
-	enum v4l2_field field = pixfmt->field;
-	u32 sizeimage, hpitch, vpitch;
-	int ret = -EINVAL;
-
-	vpif_dbg(2, debug, "vpif_check_format\n");
-	/**
-	 * first check for the pixel format. If if_type is Raw bayer,
-	 * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only
-	 * V4L2_PIX_FMT_YUV422P is supported
-	 */
-	if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
-		if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) {
-			if (!update) {
-				vpif_dbg(2, debug, "invalid pix format\n");
-				goto exit;
-			}
-			pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
-		}
-	} else {
-		if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) {
-			if (!update) {
-				vpif_dbg(2, debug, "invalid pixel format\n");
-				goto exit;
-			}
-			pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
-		}
-	}
-
-	if (!(VPIF_VALID_FIELD(field))) {
-		if (!update) {
-			vpif_dbg(2, debug, "invalid field format\n");
-			goto exit;
-		}
-		/**
-		 * By default use FIELD_NONE for RAW Bayer capture
-		 * and FIELD_INTERLACED for other interfaces
-		 */
-		field = vpif_get_default_field(&vpif_params->iface);
-	} else if (field == V4L2_FIELD_ANY)
-		/* unsupported field. Use default */
-		field = vpif_get_default_field(&vpif_params->iface);
-
-	/* validate the hpitch */
-	hpitch = pixfmt->bytesperline;
-	if (hpitch < vpif_params->std_info.width) {
-		if (!update) {
-			vpif_dbg(2, debug, "invalid hpitch\n");
-			goto exit;
-		}
-		hpitch = vpif_params->std_info.width;
-	}
-
-	sizeimage = pixfmt->sizeimage;
-
-	vpitch = sizeimage / (hpitch * 2);
-
-	/* validate the vpitch */
-	if (vpitch < vpif_params->std_info.height) {
-		if (!update) {
-			vpif_dbg(2, debug, "Invalid vpitch\n");
-			goto exit;
-		}
-		vpitch = vpif_params->std_info.height;
-	}
-
-	/* Check for 8 byte alignment */
-	if (!ALIGN(hpitch, 8)) {
-		if (!update) {
-			vpif_dbg(2, debug, "invalid pitch alignment\n");
-			goto exit;
-		}
-		/* adjust to next 8 byte boundary */
-		hpitch = (((hpitch + 7) / 8) * 8);
-	}
-	/* if update is set, modify the bytesperline and sizeimage */
-	if (update) {
-		pixfmt->bytesperline = hpitch;
-		pixfmt->sizeimage = hpitch * vpitch * 2;
-	}
-	/**
-	 * Image width and height is always based on current standard width and
-	 * height
-	 */
-	pixfmt->width = common->fmt.fmt.pix.width;
-	pixfmt->height = common->fmt.fmt.pix.height;
-	return 0;
-exit:
-	return ret;
-}
-
-/**
- * vpif_config_addr() - function to configure buffer address in vpif
- * @ch - channel ptr
- * @muxmode - channel mux mode
- */
-static void vpif_config_addr(struct channel_obj *ch, int muxmode)
-{
-	struct common_obj *common;
-
-	vpif_dbg(2, debug, "vpif_config_addr\n");
-
-	common = &(ch->common[VPIF_VIDEO_INDEX]);
-
-	if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
-		common->set_addr = ch1_set_videobuf_addr;
-	else if (2 == muxmode)
-		common->set_addr = ch0_set_videobuf_addr_yc_nmux;
-	else
-		common->set_addr = ch0_set_videobuf_addr;
-}
-
-/**
- * vpif_mmap : It is used to map kernel space buffers into user spaces
- * @filep: file pointer
- * @vma: ptr to vm_area_struct
- */
-static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
-{
-	/* Get the channel object and file handle object */
-	struct vpif_fh *fh = filep->private_data;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
-	int ret;
-
-	vpif_dbg(2, debug, "vpif_mmap\n");
-
-	if (mutex_lock_interruptible(&common->lock))
-		return -ERESTARTSYS;
-	ret = vb2_mmap(&common->buffer_queue, vma);
-	mutex_unlock(&common->lock);
-	return ret;
-}
-
-/**
- * vpif_poll: It is used for select/poll system call
- * @filep: file pointer
- * @wait: poll table to wait
- */
-static unsigned int vpif_poll(struct file *filep, poll_table * wait)
-{
-	struct vpif_fh *fh = filep->private_data;
-	struct channel_obj *channel = fh->channel;
-	struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]);
-	unsigned int res = 0;
-
-	vpif_dbg(2, debug, "vpif_poll\n");
-
-	if (common->started) {
-		mutex_lock(&common->lock);
-		res = vb2_poll(&common->buffer_queue, filep, wait);
-		mutex_unlock(&common->lock);
-	}
-	return res;
-}
-
-/**
- * vpif_open : vpif open handler
- * @filep: file ptr
- *
- * It creates object of file handle structure and stores it in private_data
- * member of filepointer
- */
-static int vpif_open(struct file *filep)
-{
-	struct vpif_capture_config *config = vpif_dev->platform_data;
-	struct video_device *vdev = video_devdata(filep);
-	struct common_obj *common;
-	struct video_obj *vid_ch;
-	struct channel_obj *ch;
-	struct vpif_fh *fh;
-	int i;
-
-	vpif_dbg(2, debug, "vpif_open\n");
-
-	ch = video_get_drvdata(vdev);
-
-	vid_ch = &ch->video;
-	common = &ch->common[VPIF_VIDEO_INDEX];
-
-	if (NULL == ch->curr_subdev_info) {
-		/**
-		 * search through the sub device to see a registered
-		 * sub device and make it as current sub device
-		 */
-		for (i = 0; i < config->subdev_count; i++) {
-			if (vpif_obj.sd[i]) {
-				/* the sub device is registered */
-				ch->curr_subdev_info = &config->subdev_info[i];
-				/* make first input as the current input */
-				vid_ch->input_idx = 0;
-				break;
-			}
-		}
-		if (i == config->subdev_count) {
-			vpif_err("No sub device registered\n");
-			return -ENOENT;
-		}
-	}
-
-	/* Allocate memory for the file handle object */
-	fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL);
-	if (NULL == fh) {
-		vpif_err("unable to allocate memory for file handle object\n");
-		return -ENOMEM;
-	}
-
-	if (mutex_lock_interruptible(&common->lock)) {
-		kfree(fh);
-		return -ERESTARTSYS;
-	}
-	/* store pointer to fh in private_data member of filep */
-	filep->private_data = fh;
-	fh->channel = ch;
-	fh->initialized = 0;
-	/* If decoder is not initialized. initialize it */
-	if (!ch->initialized) {
-		fh->initialized = 1;
-		ch->initialized = 1;
-		memset(&(ch->vpifparams), 0, sizeof(struct vpif_params));
-	}
-	/* Increment channel usrs counter */
-	ch->usrs++;
-	/* Set io_allowed member to false */
-	fh->io_allowed[VPIF_VIDEO_INDEX] = 0;
-	/* Initialize priority of this instance to default priority */
-	fh->prio = V4L2_PRIORITY_UNSET;
-	v4l2_prio_open(&ch->prio, &fh->prio);
-	mutex_unlock(&common->lock);
-	return 0;
-}
-
-/**
- * vpif_release : function to clean up file close
- * @filep: file pointer
- *
- * This function deletes buffer queue, frees the buffers and the vpif file
- * handle
- */
-static int vpif_release(struct file *filep)
-{
-	struct vpif_fh *fh = filep->private_data;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common;
-
-	vpif_dbg(2, debug, "vpif_release\n");
-
-	common = &ch->common[VPIF_VIDEO_INDEX];
-
-	mutex_lock(&common->lock);
-	/* if this instance is doing IO */
-	if (fh->io_allowed[VPIF_VIDEO_INDEX]) {
-		/* Reset io_usrs member of channel object */
-		common->io_usrs = 0;
-		/* Disable channel as per its device type and channel id */
-		if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
-			enable_channel0(0);
-			channel0_intr_enable(0);
-		}
-		if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) ||
-		    (2 == common->started)) {
-			enable_channel1(0);
-			channel1_intr_enable(0);
-		}
-		common->started = 0;
-		/* Free buffers allocated */
-		vb2_queue_release(&common->buffer_queue);
-		vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
-	}
-
-	/* Decrement channel usrs counter */
-	ch->usrs--;
-
-	/* Close the priority */
-	v4l2_prio_close(&ch->prio, fh->prio);
-
-	if (fh->initialized)
-		ch->initialized = 0;
-
-	mutex_unlock(&common->lock);
-	filep->private_data = NULL;
-	kfree(fh);
-	return 0;
-}
-
-/**
- * vpif_reqbufs() - request buffer handler
- * @file: file ptr
- * @priv: file handle
- * @reqbuf: request buffer structure ptr
- */
-static int vpif_reqbufs(struct file *file, void *priv,
-			struct v4l2_requestbuffers *reqbuf)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common;
-	u8 index = 0;
-	struct vb2_queue *q;
-
-	vpif_dbg(2, debug, "vpif_reqbufs\n");
-
-	/**
-	 * This file handle has not initialized the channel,
-	 * It is not allowed to do settings
-	 */
-	if ((VPIF_CHANNEL0_VIDEO == ch->channel_id)
-	    || (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
-		if (!fh->initialized) {
-			vpif_dbg(1, debug, "Channel Busy\n");
-			return -EBUSY;
-		}
-	}
-
-	if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type || !vpif_dev)
-		return -EINVAL;
-
-	index = VPIF_VIDEO_INDEX;
-
-	common = &ch->common[index];
-
-	if (0 != common->io_usrs)
-		return -EBUSY;
-
-	/* Initialize videobuf2 queue as per the buffer type */
-	common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
-	if (!common->alloc_ctx) {
-		vpif_err("Failed to get the context\n");
-		return -EINVAL;
-	}
-	q = &common->buffer_queue;
-	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	q->io_modes = VB2_MMAP | VB2_USERPTR;
-	q->drv_priv = fh;
-	q->ops = &video_qops;
-	q->mem_ops = &vb2_dma_contig_memops;
-	q->buf_struct_size = sizeof(struct vpif_cap_buffer);
-
-	vb2_queue_init(q);
-
-	/* Set io allowed member of file handle to TRUE */
-	fh->io_allowed[index] = 1;
-	/* Increment io usrs member of channel object to 1 */
-	common->io_usrs = 1;
-	/* Store type of memory requested in channel object */
-	common->memory = reqbuf->memory;
-	INIT_LIST_HEAD(&common->dma_queue);
-
-	/* Allocate buffers */
-	return vb2_reqbufs(&common->buffer_queue, reqbuf);
-}
-
-/**
- * vpif_querybuf() - query buffer handler
- * @file: file ptr
- * @priv: file handle
- * @buf: v4l2 buffer structure ptr
- */
-static int vpif_querybuf(struct file *file, void *priv,
-				struct v4l2_buffer *buf)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-
-	vpif_dbg(2, debug, "vpif_querybuf\n");
-
-	if (common->fmt.type != buf->type)
-		return -EINVAL;
-
-	if (common->memory != V4L2_MEMORY_MMAP) {
-		vpif_dbg(1, debug, "Invalid memory\n");
-		return -EINVAL;
-	}
-
-	return vb2_querybuf(&common->buffer_queue, buf);
-}
-
-/**
- * vpif_qbuf() - query buffer handler
- * @file: file ptr
- * @priv: file handle
- * @buf: v4l2 buffer structure ptr
- */
-static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
-{
-
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	struct v4l2_buffer tbuf = *buf;
-
-	vpif_dbg(2, debug, "vpif_qbuf\n");
-
-	if (common->fmt.type != tbuf.type) {
-		vpif_err("invalid buffer type\n");
-		return -EINVAL;
-	}
-
-	if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
-		vpif_err("fh io not allowed\n");
-		return -EACCES;
-	}
-
-	return vb2_qbuf(&common->buffer_queue, buf);
-}
-
-/**
- * vpif_dqbuf() - query buffer handler
- * @file: file ptr
- * @priv: file handle
- * @buf: v4l2 buffer structure ptr
- */
-static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-
-	vpif_dbg(2, debug, "vpif_dqbuf\n");
-
-	return vb2_dqbuf(&common->buffer_queue, buf,
-			 (file->f_flags & O_NONBLOCK));
-}
-
-/**
- * vpif_streamon() - streamon handler
- * @file: file ptr
- * @priv: file handle
- * @buftype: v4l2 buffer type
- */
-static int vpif_streamon(struct file *file, void *priv,
-				enum v4l2_buf_type buftype)
-{
-
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id];
-	struct vpif_params *vpif;
-	int ret = 0;
-
-	vpif_dbg(2, debug, "vpif_streamon\n");
-
-	vpif = &ch->vpifparams;
-
-	if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
-		vpif_dbg(1, debug, "buffer type not supported\n");
-		return -EINVAL;
-	}
-
-	/* If file handle is not allowed IO, return error */
-	if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
-		vpif_dbg(1, debug, "io not allowed\n");
-		return -EACCES;
-	}
-
-	/* If Streaming is already started, return error */
-	if (common->started) {
-		vpif_dbg(1, debug, "channel->started\n");
-		return -EBUSY;
-	}
-
-	if ((ch->channel_id == VPIF_CHANNEL0_VIDEO &&
-	    oth_ch->common[VPIF_VIDEO_INDEX].started &&
-	    vpif->std_info.ycmux_mode == 0) ||
-	   ((ch->channel_id == VPIF_CHANNEL1_VIDEO) &&
-	    (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) {
-		vpif_dbg(1, debug, "other channel is being used\n");
-		return -EBUSY;
-	}
-
-	ret = vpif_check_format(ch, &common->fmt.fmt.pix, 0);
-	if (ret)
-		return ret;
-
-	/* Enable streamon on the sub device */
-	ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video,
-				s_stream, 1);
-
-	if (ret && (ret != -ENOIOCTLCMD)) {
-		vpif_dbg(1, debug, "stream on failed in subdev\n");
-		return ret;
-	}
-
-	/* Call vb2_streamon to start streaming in videobuf2 */
-	ret = vb2_streamon(&common->buffer_queue, buftype);
-	if (ret) {
-		vpif_dbg(1, debug, "vb2_streamon\n");
-		return ret;
-	}
-
-	return ret;
-}
-
-/**
- * vpif_streamoff() - streamoff handler
- * @file: file ptr
- * @priv: file handle
- * @buftype: v4l2 buffer type
- */
-static int vpif_streamoff(struct file *file, void *priv,
-				enum v4l2_buf_type buftype)
-{
-
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	int ret;
-
-	vpif_dbg(2, debug, "vpif_streamoff\n");
-
-	if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
-		vpif_dbg(1, debug, "buffer type not supported\n");
-		return -EINVAL;
-	}
-
-	/* If io is allowed for this file handle, return error */
-	if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
-		vpif_dbg(1, debug, "io not allowed\n");
-		return -EACCES;
-	}
-
-	/* If streaming is not started, return error */
-	if (!common->started) {
-		vpif_dbg(1, debug, "channel->started\n");
-		return -EINVAL;
-	}
-
-	/* disable channel */
-	if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
-		enable_channel0(0);
-		channel0_intr_enable(0);
-	} else {
-		enable_channel1(0);
-		channel1_intr_enable(0);
-	}
-
-	common->started = 0;
-
-	ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video,
-				s_stream, 0);
-
-	if (ret && (ret != -ENOIOCTLCMD))
-		vpif_dbg(1, debug, "stream off failed in subdev\n");
-
-	return vb2_streamoff(&common->buffer_queue, buftype);
-}
-
-/**
- * vpif_map_sub_device_to_input() - Maps sub device to input
- * @ch - ptr to channel
- * @config - ptr to capture configuration
- * @input_index - Given input index from application
- * @sub_device_index - index into sd table
- *
- * lookup the sub device information for a given input index.
- * we report all the inputs to application. inputs table also
- * has sub device name for the each input
- */
-static struct vpif_subdev_info *vpif_map_sub_device_to_input(
-				struct channel_obj *ch,
-				struct vpif_capture_config *vpif_cfg,
-				int input_index,
-				int *sub_device_index)
-{
-	struct vpif_capture_chan_config *chan_cfg;
-	struct vpif_subdev_info *subdev_info = NULL;
-	const char *subdev_name = NULL;
-	int i;
-
-	vpif_dbg(2, debug, "vpif_map_sub_device_to_input\n");
-
-	chan_cfg = &vpif_cfg->chan_config[ch->channel_id];
-
-	/**
-	 * search through the inputs to find the sub device supporting
-	 * the input
-	 */
-	for (i = 0; i < chan_cfg->input_count; i++) {
-		/* For each sub device, loop through input */
-		if (i == input_index) {
-			subdev_name = chan_cfg->inputs[i].subdev_name;
-			break;
-		}
-	}
-
-	/* if reached maximum. return null */
-	if (i == chan_cfg->input_count || (NULL == subdev_name))
-		return subdev_info;
-
-	/* loop through the sub device list to get the sub device info */
-	for (i = 0; i < vpif_cfg->subdev_count; i++) {
-		subdev_info = &vpif_cfg->subdev_info[i];
-		if (!strcmp(subdev_info->name, subdev_name))
-			break;
-	}
-
-	if (i == vpif_cfg->subdev_count)
-		return subdev_info;
-
-	/* check if the sub device is registered */
-	if (NULL == vpif_obj.sd[i])
-		return NULL;
-
-	*sub_device_index = i;
-	return subdev_info;
-}
-
-/**
- * vpif_querystd() - querystd handler
- * @file: file ptr
- * @priv: file handle
- * @std_id: ptr to std id
- *
- * This function is called to detect standard at the selected input
- */
-static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	int ret = 0;
-
-	vpif_dbg(2, debug, "vpif_querystd\n");
-
-	/* Call querystd function of decoder device */
-	ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video,
-				querystd, std_id);
-	if (ret < 0)
-		vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
-
-	return ret;
-}
-
-/**
- * vpif_g_std() - get STD handler
- * @file: file ptr
- * @priv: file handle
- * @std_id: ptr to std id
- */
-static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-
-	vpif_dbg(2, debug, "vpif_g_std\n");
-
-	*std = ch->video.stdid;
-	return 0;
-}
-
-/**
- * vpif_s_std() - set STD handler
- * @file: file ptr
- * @priv: file handle
- * @std_id: ptr to std id
- */
-static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	int ret = 0;
-
-	vpif_dbg(2, debug, "vpif_s_std\n");
-
-	if (common->started) {
-		vpif_err("streaming in progress\n");
-		return -EBUSY;
-	}
-
-	if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
-	    (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
-		if (!fh->initialized) {
-			vpif_dbg(1, debug, "Channel Busy\n");
-			return -EBUSY;
-		}
-	}
-
-	ret = v4l2_prio_check(&ch->prio, fh->prio);
-	if (0 != ret)
-		return ret;
-
-	fh->initialized = 1;
-
-	/* Call encoder subdevice function to set the standard */
-	ch->video.stdid = *std_id;
-	ch->video.dv_preset = V4L2_DV_INVALID;
-	memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings));
-
-	/* Get the information about the standard */
-	if (vpif_update_std_info(ch)) {
-		vpif_err("Error getting the standard info\n");
-		return -EINVAL;
-	}
-
-	/* Configure the default format information */
-	vpif_config_format(ch);
-
-	/* set standard in the sub device */
-	ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core,
-				s_std, *std_id);
-	if (ret < 0)
-		vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
-	return ret;
-}
-
-/**
- * vpif_enum_input() - ENUMINPUT handler
- * @file: file ptr
- * @priv: file handle
- * @input: ptr to input structure
- */
-static int vpif_enum_input(struct file *file, void *priv,
-				struct v4l2_input *input)
-{
-
-	struct vpif_capture_config *config = vpif_dev->platform_data;
-	struct vpif_capture_chan_config *chan_cfg;
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-
-	chan_cfg = &config->chan_config[ch->channel_id];
-
-	if (input->index >= chan_cfg->input_count) {
-		vpif_dbg(1, debug, "Invalid input index\n");
-		return -EINVAL;
-	}
-
-	memcpy(input, &chan_cfg->inputs[input->index].input,
-		sizeof(*input));
-	return 0;
-}
-
-/**
- * vpif_g_input() - Get INPUT handler
- * @file: file ptr
- * @priv: file handle
- * @index: ptr to input index
- */
-static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct video_obj *vid_ch = &ch->video;
-
-	*index = vid_ch->input_idx;
-
-	return 0;
-}
-
-/**
- * vpif_s_input() - Set INPUT handler
- * @file: file ptr
- * @priv: file handle
- * @index: input index
- */
-static int vpif_s_input(struct file *file, void *priv, unsigned int index)
-{
-	struct vpif_capture_config *config = vpif_dev->platform_data;
-	struct vpif_capture_chan_config *chan_cfg;
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	struct video_obj *vid_ch = &ch->video;
-	struct vpif_subdev_info *subdev_info;
-	int ret = 0, sd_index = 0;
-	u32 input = 0, output = 0;
-
-	chan_cfg = &config->chan_config[ch->channel_id];
-
-	if (common->started) {
-		vpif_err("Streaming in progress\n");
-		return -EBUSY;
-	}
-
-	if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
-	    (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
-		if (!fh->initialized) {
-			vpif_dbg(1, debug, "Channel Busy\n");
-			return -EBUSY;
-		}
-	}
-
-	ret = v4l2_prio_check(&ch->prio, fh->prio);
-	if (0 != ret)
-		return ret;
-
-	fh->initialized = 1;
-	subdev_info = vpif_map_sub_device_to_input(ch, config, index,
-						   &sd_index);
-	if (NULL == subdev_info) {
-		vpif_dbg(1, debug,
-			"couldn't lookup sub device for the input index\n");
-		return -EINVAL;
-	}
-
-	/* first setup input path from sub device to vpif */
-	if (config->setup_input_path) {
-		ret = config->setup_input_path(ch->channel_id,
-					       subdev_info->name);
-		if (ret < 0) {
-			vpif_dbg(1, debug, "couldn't setup input path for the"
-				" sub device %s, for input index %d\n",
-				subdev_info->name, index);
-			return ret;
-		}
-	}
-
-	if (subdev_info->can_route) {
-		input = subdev_info->input;
-		output = subdev_info->output;
-		ret = v4l2_subdev_call(vpif_obj.sd[sd_index], video, s_routing,
-					input, output, 0);
-		if (ret < 0) {
-			vpif_dbg(1, debug, "Failed to set input\n");
-			return ret;
-		}
-	}
-	vid_ch->input_idx = index;
-	ch->curr_subdev_info = subdev_info;
-	ch->curr_sd_index = sd_index;
-	/* copy interface parameters to vpif */
-	ch->vpifparams.iface = subdev_info->vpif_if;
-
-	/* update tvnorms from the sub device input info */
-	ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std;
-	return ret;
-}
-
-/**
- * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
- * @file: file ptr
- * @priv: file handle
- * @index: input index
- */
-static int vpif_enum_fmt_vid_cap(struct file *file, void  *priv,
-					struct v4l2_fmtdesc *fmt)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-
-	if (fmt->index != 0) {
-		vpif_dbg(1, debug, "Invalid format index\n");
-		return -EINVAL;
-	}
-
-	/* Fill in the information about format */
-	if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) {
-		fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-		strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb");
-		fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
-	} else {
-		fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-		strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
-		fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
-	}
-	return 0;
-}
-
-/**
- * vpif_try_fmt_vid_cap() - TRY_FMT handler
- * @file: file ptr
- * @priv: file handle
- * @fmt: ptr to v4l2 format structure
- */
-static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
-				struct v4l2_format *fmt)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
-
-	return vpif_check_format(ch, pixfmt, 1);
-}
-
-
-/**
- * vpif_g_fmt_vid_cap() - Set INPUT handler
- * @file: file ptr
- * @priv: file handle
- * @fmt: ptr to v4l2 format structure
- */
-static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
-				struct v4l2_format *fmt)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-
-	/* Check the validity of the buffer type */
-	if (common->fmt.type != fmt->type)
-		return -EINVAL;
-
-	/* Fill in the information about format */
-	*fmt = common->fmt;
-	return 0;
-}
-
-/**
- * vpif_s_fmt_vid_cap() - Set FMT handler
- * @file: file ptr
- * @priv: file handle
- * @fmt: ptr to v4l2 format structure
- */
-static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
-				struct v4l2_format *fmt)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	struct v4l2_pix_format *pixfmt;
-	int ret = 0;
-
-	vpif_dbg(2, debug, "%s\n", __func__);
-
-	/* If streaming is started, return error */
-	if (common->started) {
-		vpif_dbg(1, debug, "Streaming is started\n");
-		return -EBUSY;
-	}
-
-	if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
-	    (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
-		if (!fh->initialized) {
-			vpif_dbg(1, debug, "Channel Busy\n");
-			return -EBUSY;
-		}
-	}
-
-	ret = v4l2_prio_check(&ch->prio, fh->prio);
-	if (0 != ret)
-		return ret;
-
-	fh->initialized = 1;
-
-	pixfmt = &fmt->fmt.pix;
-	/* Check for valid field format */
-	ret = vpif_check_format(ch, pixfmt, 0);
-
-	if (ret)
-		return ret;
-	/* store the format in the channel object */
-	common->fmt = *fmt;
-	return 0;
-}
-
-/**
- * vpif_querycap() - QUERYCAP handler
- * @file: file ptr
- * @priv: file handle
- * @cap: ptr to v4l2_capability structure
- */
-static int vpif_querycap(struct file *file, void  *priv,
-				struct v4l2_capability *cap)
-{
-	struct vpif_capture_config *config = vpif_dev->platform_data;
-
-	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
-	strlcpy(cap->driver, "vpif capture", sizeof(cap->driver));
-	strlcpy(cap->bus_info, "VPIF Platform", sizeof(cap->bus_info));
-	strlcpy(cap->card, config->card_name, sizeof(cap->card));
-
-	return 0;
-}
-
-/**
- * vpif_g_priority() - get priority handler
- * @file: file ptr
- * @priv: file handle
- * @prio: ptr to v4l2_priority structure
- */
-static int vpif_g_priority(struct file *file, void *priv,
-			   enum v4l2_priority *prio)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-
-	*prio = v4l2_prio_max(&ch->prio);
-
-	return 0;
-}
-
-/**
- * vpif_s_priority() - set priority handler
- * @file: file ptr
- * @priv: file handle
- * @prio: ptr to v4l2_priority structure
- */
-static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-
-	return v4l2_prio_change(&ch->prio, &fh->prio, p);
-}
-
-/**
- * vpif_cropcap() - cropcap handler
- * @file: file ptr
- * @priv: file handle
- * @crop: ptr to v4l2_cropcap structure
- */
-static int vpif_cropcap(struct file *file, void *priv,
-			struct v4l2_cropcap *crop)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-
-	if (V4L2_BUF_TYPE_VIDEO_CAPTURE != crop->type)
-		return -EINVAL;
-
-	crop->bounds.left = 0;
-	crop->bounds.top = 0;
-	crop->bounds.height = common->height;
-	crop->bounds.width = common->width;
-	crop->defrect = crop->bounds;
-	return 0;
-}
-
-/**
- * vpif_enum_dv_presets() - ENUM_DV_PRESETS handler
- * @file: file ptr
- * @priv: file handle
- * @preset: input preset
- */
-static int vpif_enum_dv_presets(struct file *file, void *priv,
-		struct v4l2_dv_enum_preset *preset)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-
-	return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index],
-			video, enum_dv_presets, preset);
-}
-
-/**
- * vpif_query_dv_presets() - QUERY_DV_PRESET handler
- * @file: file ptr
- * @priv: file handle
- * @preset: input preset
- */
-static int vpif_query_dv_preset(struct file *file, void *priv,
-		struct v4l2_dv_preset *preset)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-
-	return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index],
-		       video, query_dv_preset, preset);
-}
-/**
- * vpif_s_dv_presets() - S_DV_PRESETS handler
- * @file: file ptr
- * @priv: file handle
- * @preset: input preset
- */
-static int vpif_s_dv_preset(struct file *file, void *priv,
-		struct v4l2_dv_preset *preset)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	int ret = 0;
-
-	if (common->started) {
-		vpif_dbg(1, debug, "streaming in progress\n");
-		return -EBUSY;
-	}
-
-	if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
-	    (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
-		if (!fh->initialized) {
-			vpif_dbg(1, debug, "Channel Busy\n");
-			return -EBUSY;
-		}
-	}
-
-	ret = v4l2_prio_check(&ch->prio, fh->prio);
-	if (ret)
-		return ret;
-
-	fh->initialized = 1;
-
-	/* Call encoder subdevice function to set the standard */
-	if (mutex_lock_interruptible(&common->lock))
-		return -ERESTARTSYS;
-
-	ch->video.dv_preset = preset->preset;
-	ch->video.stdid = V4L2_STD_UNKNOWN;
-	memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings));
-
-	/* Get the information about the standard */
-	if (vpif_update_std_info(ch)) {
-		vpif_dbg(1, debug, "Error getting the standard info\n");
-		ret = -EINVAL;
-	} else {
-		/* Configure the default format information */
-		vpif_config_format(ch);
-
-		ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index],
-				video, s_dv_preset, preset);
-	}
-
-	mutex_unlock(&common->lock);
-
-	return ret;
-}
-/**
- * vpif_g_dv_presets() - G_DV_PRESETS handler
- * @file: file ptr
- * @priv: file handle
- * @preset: input preset
- */
-static int vpif_g_dv_preset(struct file *file, void *priv,
-		struct v4l2_dv_preset *preset)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-
-	preset->preset = ch->video.dv_preset;
-
-	return 0;
-}
-
-/**
- * vpif_s_dv_timings() - S_DV_TIMINGS handler
- * @file: file ptr
- * @priv: file handle
- * @timings: digital video timings
- */
-static int vpif_s_dv_timings(struct file *file, void *priv,
-		struct v4l2_dv_timings *timings)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct vpif_params *vpifparams = &ch->vpifparams;
-	struct vpif_channel_config_params *std_info = &vpifparams->std_info;
-	struct video_obj *vid_ch = &ch->video;
-	struct v4l2_bt_timings *bt = &vid_ch->bt_timings;
-	int ret;
-
-	if (timings->type != V4L2_DV_BT_656_1120) {
-		vpif_dbg(2, debug, "Timing type not defined\n");
-		return -EINVAL;
-	}
-
-	/* Configure subdevice timings, if any */
-	ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index],
-			video, s_dv_timings, timings);
-	if (ret == -ENOIOCTLCMD) {
-		vpif_dbg(2, debug, "Custom DV timings not supported by "
-				"subdevice\n");
-		return -EINVAL;
-	}
-	if (ret < 0) {
-		vpif_dbg(2, debug, "Error setting custom DV timings\n");
-		return ret;
-	}
-
-	if (!(timings->bt.width && timings->bt.height &&
-				(timings->bt.hbackporch ||
-				 timings->bt.hfrontporch ||
-				 timings->bt.hsync) &&
-				timings->bt.vfrontporch &&
-				(timings->bt.vbackporch ||
-				 timings->bt.vsync))) {
-		vpif_dbg(2, debug, "Timings for width, height, "
-				"horizontal back porch, horizontal sync, "
-				"horizontal front porch, vertical back porch, "
-				"vertical sync and vertical back porch "
-				"must be defined\n");
-		return -EINVAL;
-	}
-
-	*bt = timings->bt;
-
-	/* Configure video port timings */
-
-	std_info->eav2sav = bt->hbackporch + bt->hfrontporch +
-		bt->hsync - 8;
-	std_info->sav2eav = bt->width;
-
-	std_info->l1 = 1;
-	std_info->l3 = bt->vsync + bt->vbackporch + 1;
-
-	if (bt->interlaced) {
-		if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
-			std_info->vsize = bt->height * 2 +
-				bt->vfrontporch + bt->vsync + bt->vbackporch +
-				bt->il_vfrontporch + bt->il_vsync +
-				bt->il_vbackporch;
-			std_info->l5 = std_info->vsize/2 -
-				(bt->vfrontporch - 1);
-			std_info->l7 = std_info->vsize/2 + 1;
-			std_info->l9 = std_info->l7 + bt->il_vsync +
-				bt->il_vbackporch + 1;
-			std_info->l11 = std_info->vsize -
-				(bt->il_vfrontporch - 1);
-		} else {
-			vpif_dbg(2, debug, "Required timing values for "
-					"interlaced BT format missing\n");
-			return -EINVAL;
-		}
-	} else {
-		std_info->vsize = bt->height + bt->vfrontporch +
-			bt->vsync + bt->vbackporch;
-		std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
-	}
-	strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
-	std_info->width = bt->width;
-	std_info->height = bt->height;
-	std_info->frm_fmt = bt->interlaced ? 0 : 1;
-	std_info->ycmux_mode = 0;
-	std_info->capture_format = 0;
-	std_info->vbi_supported = 0;
-	std_info->hd_sd = 1;
-	std_info->stdid = 0;
-	std_info->dv_preset = V4L2_DV_INVALID;
-
-	vid_ch->stdid = 0;
-	vid_ch->dv_preset = V4L2_DV_INVALID;
-	return 0;
-}
-
-/**
- * vpif_g_dv_timings() - G_DV_TIMINGS handler
- * @file: file ptr
- * @priv: file handle
- * @timings: digital video timings
- */
-static int vpif_g_dv_timings(struct file *file, void *priv,
-		struct v4l2_dv_timings *timings)
-{
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-	struct video_obj *vid_ch = &ch->video;
-	struct v4l2_bt_timings *bt = &vid_ch->bt_timings;
-
-	timings->bt = *bt;
-
-	return 0;
-}
-
-/*
- * vpif_g_chip_ident() - Identify the chip
- * @file: file ptr
- * @priv: file handle
- * @chip: chip identity
- *
- * Returns zero or -EINVAL if read operations fails.
- */
-static int vpif_g_chip_ident(struct file *file, void *priv,
-		struct v4l2_dbg_chip_ident *chip)
-{
-	chip->ident = V4L2_IDENT_NONE;
-	chip->revision = 0;
-	if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
-			chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) {
-		vpif_dbg(2, debug, "match_type is invalid.\n");
-		return -EINVAL;
-	}
-
-	return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core,
-			g_chip_ident, chip);
-}
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-/*
- * vpif_dbg_g_register() - Read register
- * @file: file ptr
- * @priv: file handle
- * @reg: register to be read
- *
- * Debugging only
- * Returns zero or -EINVAL if read operations fails.
- */
-static int vpif_dbg_g_register(struct file *file, void *priv,
-		struct v4l2_dbg_register *reg){
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-
-	return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core,
-			g_register, reg);
-}
-
-/*
- * vpif_dbg_s_register() - Write to register
- * @file: file ptr
- * @priv: file handle
- * @reg: register to be modified
- *
- * Debugging only
- * Returns zero or -EINVAL if write operations fails.
- */
-static int vpif_dbg_s_register(struct file *file, void *priv,
-		struct v4l2_dbg_register *reg){
-	struct vpif_fh *fh = priv;
-	struct channel_obj *ch = fh->channel;
-
-	return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core,
-			s_register, reg);
-}
-#endif
-
-/*
- * vpif_log_status() - Status information
- * @file: file ptr
- * @priv: file handle
- *
- * Returns zero.
- */
-static int vpif_log_status(struct file *filep, void *priv)
-{
-	/* status for sub devices */
-	v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
-
-	return 0;
-}
-
-/* vpif capture ioctl operations */
-static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
-	.vidioc_querycap        	= vpif_querycap,
-	.vidioc_g_priority		= vpif_g_priority,
-	.vidioc_s_priority		= vpif_s_priority,
-	.vidioc_enum_fmt_vid_cap	= vpif_enum_fmt_vid_cap,
-	.vidioc_g_fmt_vid_cap  		= vpif_g_fmt_vid_cap,
-	.vidioc_s_fmt_vid_cap		= vpif_s_fmt_vid_cap,
-	.vidioc_try_fmt_vid_cap		= vpif_try_fmt_vid_cap,
-	.vidioc_enum_input		= vpif_enum_input,
-	.vidioc_s_input			= vpif_s_input,
-	.vidioc_g_input			= vpif_g_input,
-	.vidioc_reqbufs         	= vpif_reqbufs,
-	.vidioc_querybuf        	= vpif_querybuf,
-	.vidioc_querystd		= vpif_querystd,
-	.vidioc_s_std           	= vpif_s_std,
-	.vidioc_g_std			= vpif_g_std,
-	.vidioc_qbuf            	= vpif_qbuf,
-	.vidioc_dqbuf           	= vpif_dqbuf,
-	.vidioc_streamon        	= vpif_streamon,
-	.vidioc_streamoff       	= vpif_streamoff,
-	.vidioc_cropcap         	= vpif_cropcap,
-	.vidioc_enum_dv_presets         = vpif_enum_dv_presets,
-	.vidioc_s_dv_preset             = vpif_s_dv_preset,
-	.vidioc_g_dv_preset             = vpif_g_dv_preset,
-	.vidioc_query_dv_preset         = vpif_query_dv_preset,
-	.vidioc_s_dv_timings            = vpif_s_dv_timings,
-	.vidioc_g_dv_timings            = vpif_g_dv_timings,
-	.vidioc_g_chip_ident		= vpif_g_chip_ident,
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-	.vidioc_g_register		= vpif_dbg_g_register,
-	.vidioc_s_register		= vpif_dbg_s_register,
-#endif
-	.vidioc_log_status		= vpif_log_status,
-};
-
-/* vpif file operations */
-static struct v4l2_file_operations vpif_fops = {
-	.owner = THIS_MODULE,
-	.open = vpif_open,
-	.release = vpif_release,
-	.unlocked_ioctl = video_ioctl2,
-	.mmap = vpif_mmap,
-	.poll = vpif_poll
-};
-
-/* vpif video template */
-static struct video_device vpif_video_template = {
-	.name		= "vpif",
-	.fops		= &vpif_fops,
-	.minor		= -1,
-	.ioctl_ops	= &vpif_ioctl_ops,
-};
-
-/**
- * initialize_vpif() - Initialize vpif data structures
- *
- * Allocate memory for data structures and initialize them
- */
-static int initialize_vpif(void)
-{
-	int err = 0, i, j;
-	int free_channel_objects_index;
-
-	/* Default number of buffers should be 3 */
-	if ((ch0_numbuffers > 0) &&
-	    (ch0_numbuffers < config_params.min_numbuffers))
-		ch0_numbuffers = config_params.min_numbuffers;
-	if ((ch1_numbuffers > 0) &&
-	    (ch1_numbuffers < config_params.min_numbuffers))
-		ch1_numbuffers = config_params.min_numbuffers;
-
-	/* Set buffer size to min buffers size if it is invalid */
-	if (ch0_bufsize < config_params.min_bufsize[VPIF_CHANNEL0_VIDEO])
-		ch0_bufsize =
-		    config_params.min_bufsize[VPIF_CHANNEL0_VIDEO];
-	if (ch1_bufsize < config_params.min_bufsize[VPIF_CHANNEL1_VIDEO])
-		ch1_bufsize =
-		    config_params.min_bufsize[VPIF_CHANNEL1_VIDEO];
-
-	config_params.numbuffers[VPIF_CHANNEL0_VIDEO] = ch0_numbuffers;
-	config_params.numbuffers[VPIF_CHANNEL1_VIDEO] = ch1_numbuffers;
-	if (ch0_numbuffers) {
-		config_params.channel_bufsize[VPIF_CHANNEL0_VIDEO]
-		    = ch0_bufsize;
-	}
-	if (ch1_numbuffers) {
-		config_params.channel_bufsize[VPIF_CHANNEL1_VIDEO]
-		    = ch1_bufsize;
-	}
-
-	/* Allocate memory for six channel objects */
-	for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
-		vpif_obj.dev[i] =
-		    kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
-		/* If memory allocation fails, return error */
-		if (!vpif_obj.dev[i]) {
-			free_channel_objects_index = i;
-			err = -ENOMEM;
-			goto vpif_init_free_channel_objects;
-		}
-	}
-	return 0;
-
-vpif_init_free_channel_objects:
-	for (j = 0; j < free_channel_objects_index; j++)
-		kfree(vpif_obj.dev[j]);
-	return err;
-}
-
-/**
- * vpif_probe : This function probes the vpif capture driver
- * @pdev: platform device pointer
- *
- * This creates device entries by register itself to the V4L2 driver and
- * initializes fields of each channel objects
- */
-static __init int vpif_probe(struct platform_device *pdev)
-{
-	struct vpif_subdev_info *subdevdata;
-	struct vpif_capture_config *config;
-	int i, j, k, m, q, err;
-	struct i2c_adapter *i2c_adap;
-	struct channel_obj *ch;
-	struct common_obj *common;
-	struct video_device *vfd;
-	struct resource *res;
-	int subdev_count;
-	size_t size;
-
-	vpif_dev = &pdev->dev;
-
-	err = initialize_vpif();
-	if (err) {
-		v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
-		return err;
-	}
-
-	err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
-	if (err) {
-		v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
-		return err;
-	}
-
-	k = 0;
-	while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) {
-		for (i = res->start; i <= res->end; i++) {
-			if (request_irq(i, vpif_channel_isr, IRQF_SHARED,
-					"VPIF_Capture",
-				(void *)(&vpif_obj.dev[k]->channel_id))) {
-				err = -EBUSY;
-				i--;
-				goto vpif_int_err;
-			}
-		}
-		k++;
-	}
-
-	for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
-		/* Get the pointer to the channel object */
-		ch = vpif_obj.dev[i];
-		/* Allocate memory for video device */
-		vfd = video_device_alloc();
-		if (NULL == vfd) {
-			for (j = 0; j < i; j++) {
-				ch = vpif_obj.dev[j];
-				video_device_release(ch->video_dev);
-			}
-			err = -ENOMEM;
-			goto vpif_dev_alloc_err;
-		}
-
-		/* Initialize field of video device */
-		*vfd = vpif_video_template;
-		vfd->v4l2_dev = &vpif_obj.v4l2_dev;
-		vfd->release = video_device_release;
-		snprintf(vfd->name, sizeof(vfd->name),
-			 "VPIF_Capture_DRIVER_V%s",
-			 VPIF_CAPTURE_VERSION);
-		/* Set video_dev to the video device */
-		ch->video_dev = vfd;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (res) {
-		size = resource_size(res);
-		/* The resources are divided into two equal memory and when we
-		 * have HD output we can add them together
-		 */
-		for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
-			ch = vpif_obj.dev[j];
-			ch->channel_id = j;
-			/* only enabled if second resource exists */
-			config_params.video_limit[ch->channel_id] = 0;
-			if (size)
-				config_params.video_limit[ch->channel_id] =
-									size/2;
-		}
-	}
-
-	for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
-		ch = vpif_obj.dev[j];
-		ch->channel_id = j;
-		common = &(ch->common[VPIF_VIDEO_INDEX]);
-		spin_lock_init(&common->irqlock);
-		mutex_init(&common->lock);
-		ch->video_dev->lock = &common->lock;
-		/* Initialize prio member of channel object */
-		v4l2_prio_init(&ch->prio);
-		err = video_register_device(ch->video_dev,
-					    VFL_TYPE_GRABBER, (j ? 1 : 0));
-		if (err)
-			goto probe_out;
-
-		video_set_drvdata(ch->video_dev, ch);
-
-	}
-
-	i2c_adap = i2c_get_adapter(1);
-	config = pdev->dev.platform_data;
-
-	subdev_count = config->subdev_count;
-	vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
-				GFP_KERNEL);
-	if (vpif_obj.sd == NULL) {
-		vpif_err("unable to allocate memory for subdevice pointers\n");
-		err = -ENOMEM;
-		goto probe_out;
-	}
-
-	for (i = 0; i < subdev_count; i++) {
-		subdevdata = &config->subdev_info[i];
-		vpif_obj.sd[i] =
-			v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
-						  i2c_adap,
-						  &subdevdata->board_info,
-						  NULL);
-
-		if (!vpif_obj.sd[i]) {
-			vpif_err("Error registering v4l2 subdevice\n");
-			goto probe_subdev_out;
-		}
-		v4l2_info(&vpif_obj.v4l2_dev, "registered sub device %s\n",
-			  subdevdata->name);
-
-		if (vpif_obj.sd[i])
-			vpif_obj.sd[i]->grp_id = 1 << i;
-	}
-
-	v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
-	return 0;
-
-probe_subdev_out:
-	/* free sub devices memory */
-	kfree(vpif_obj.sd);
-
-	j = VPIF_CAPTURE_MAX_DEVICES;
-probe_out:
-	for (k = 0; k < j; k++) {
-		/* Get the pointer to the channel object */
-		ch = vpif_obj.dev[k];
-		/* Unregister video device */
-		video_unregister_device(ch->video_dev);
-	}
-
-vpif_dev_alloc_err:
-	k = VPIF_CAPTURE_MAX_DEVICES-1;
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, k);
-	i = res->end;
-
-vpif_int_err:
-	for (q = k; q >= 0; q--) {
-		for (m = i; m >= (int)res->start; m--)
-			free_irq(m, (void *)(&vpif_obj.dev[q]->channel_id));
-
-		res = platform_get_resource(pdev, IORESOURCE_IRQ, q-1);
-		if (res)
-			i = res->end;
-	}
-	v4l2_device_unregister(&vpif_obj.v4l2_dev);
-	return err;
-}
-
-/**
- * vpif_remove() - driver remove handler
- * @device: ptr to platform device structure
- *
- * The vidoe device is unregistered
- */
-static int vpif_remove(struct platform_device *device)
-{
-	int i;
-	struct channel_obj *ch;
-
-	v4l2_device_unregister(&vpif_obj.v4l2_dev);
-
-	/* un-register device */
-	for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
-		/* Get the pointer to the channel object */
-		ch = vpif_obj.dev[i];
-		/* Unregister video device */
-		video_unregister_device(ch->video_dev);
-	}
-	return 0;
-}
-
-#ifdef CONFIG_PM
-/**
- * vpif_suspend: vpif device suspend
- */
-static int vpif_suspend(struct device *dev)
-{
-
-	struct common_obj *common;
-	struct channel_obj *ch;
-	int i;
-
-	for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
-		/* Get the pointer to the channel object */
-		ch = vpif_obj.dev[i];
-		common = &ch->common[VPIF_VIDEO_INDEX];
-		mutex_lock(&common->lock);
-		if (ch->usrs && common->io_usrs) {
-			/* Disable channel */
-			if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
-				enable_channel0(0);
-				channel0_intr_enable(0);
-			}
-			if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
-			    common->started == 2) {
-				enable_channel1(0);
-				channel1_intr_enable(0);
-			}
-		}
-		mutex_unlock(&common->lock);
-	}
-
-	return 0;
-}
-
-/*
- * vpif_resume: vpif device suspend
- */
-static int vpif_resume(struct device *dev)
-{
-	struct common_obj *common;
-	struct channel_obj *ch;
-	int i;
-
-	for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
-		/* Get the pointer to the channel object */
-		ch = vpif_obj.dev[i];
-		common = &ch->common[VPIF_VIDEO_INDEX];
-		mutex_lock(&common->lock);
-		if (ch->usrs && common->io_usrs) {
-			/* Disable channel */
-			if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
-				enable_channel0(1);
-				channel0_intr_enable(1);
-			}
-			if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
-			    common->started == 2) {
-				enable_channel1(1);
-				channel1_intr_enable(1);
-			}
-		}
-		mutex_unlock(&common->lock);
-	}
-
-	return 0;
-}
-
-static const struct dev_pm_ops vpif_dev_pm_ops = {
-	.suspend = vpif_suspend,
-	.resume = vpif_resume,
-};
-
-#define vpif_pm_ops (&vpif_dev_pm_ops)
-#else
-#define vpif_pm_ops NULL
-#endif
-
-static __refdata struct platform_driver vpif_driver = {
-	.driver	= {
-		.name	= "vpif_capture",
-		.owner	= THIS_MODULE,
-		.pm	= vpif_pm_ops,
-	},
-	.probe = vpif_probe,
-	.remove = vpif_remove,
-};
-
-/**
- * vpif_init: initialize the vpif driver
- *
- * This function registers device and driver to the kernel, requests irq
- * handler and allocates memory
- * for channel objects
- */
-static __init int vpif_init(void)
-{
-	return platform_driver_register(&vpif_driver);
-}
-
-/**
- * vpif_cleanup : This function clean up the vpif capture resources
- *
- * This will un-registers device and driver to the kernel, frees
- * requested irq handler and de-allocates memory allocated for channel
- * objects.
- */
-static void vpif_cleanup(void)
-{
-	struct platform_device *pdev;
-	struct resource *res;
-	int irq_num;
-	int i = 0;
-
-	pdev = container_of(vpif_dev, struct platform_device, dev);
-	while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) {
-		for (irq_num = res->start; irq_num <= res->end; irq_num++)
-			free_irq(irq_num,
-				 (void *)(&vpif_obj.dev[i]->channel_id));
-		i++;
-	}
-
-	platform_driver_unregister(&vpif_driver);
-
-	kfree(vpif_obj.sd);
-	for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++)
-		kfree(vpif_obj.dev[i]);
-}
-
-/* Function for module initialization and cleanup */
-module_init(vpif_init);
-module_exit(vpif_cleanup);