[PATCH 2/7] Patch for adding imagesize corrected for MMAP buffers and behave the same as user allocated buffers. The sizeimage parameter is giving the wrong size from the driver and it has to be corrected in S_FMT and TRY_FMT ioctls.

[<asheeshb@ti.com>]

From: Asheesh Bhardwaj <asheesh@lab1.dmlab>

---
 drivers/media/video/davinci/vpif_display.c |   23 ++++++++---------------
 1 files changed, 8 insertions(+), 15 deletions(-)

diff --git a/drivers/media/video/davinci/vpif_display.c b/drivers/media/video/davinci/vpif_display.c
index db9f395..d794595 100644
--- a/drivers/media/video/davinci/vpif_display.c
+++ b/drivers/media/video/davinci/vpif_display.c
@@ -191,7 +191,8 @@ static int vpif_buffer_prepare(struct videobuf_queue *q,
 	if (VIDEOBUF_NEEDS_INIT == vb->state) {
 		vb->width	= common->width;
 		vb->height	= common->height;
-		vb->size	= vb->width * vb->height;
+		/* Updating the size based on the application requirement */
+                vb->size        = common->fmt.fmt.pix.sizeimage;
 		vb->field	= field;
 
 		ret = videobuf_iolock(q, vb, NULL);
@@ -480,11 +481,8 @@ static void vpif_calculate_offsets(struct channel_obj *ch)
 	} else {
 		vid_ch->buf_field = common->fmt.fmt.pix.field;
 	}
-
-	if (V4L2_MEMORY_USERPTR == common->memory)
-		sizeimage = common->fmt.fmt.pix.sizeimage;
-	else
-		sizeimage = config_params.channel_bufsize[ch->channel_id];
+	
+        sizeimage = common->fmt.fmt.pix.sizeimage;
 
 	hpitch = common->fmt.fmt.pix.bytesperline;
 	vpitch = sizeimage / (hpitch * 2);
@@ -560,11 +558,9 @@ static int vpif_check_format(struct channel_obj *ch,
 
 	if (pixfmt->bytesperline <= 0)
 		goto invalid_pitch_exit;
-
-	if (V4L2_MEMORY_USERPTR == common->memory)
-		sizeimage = pixfmt->sizeimage;
-	else
-		sizeimage = config_params.channel_bufsize[ch->channel_id];
+	
+        /* sizeimage is same for both MMAP and user allocated buffers, the size is updated for mmap buffers*/
+        sizeimage = pixfmt->sizeimage;
 
 	if (vpif_get_std_info(ch)) {
 		vpif_err("Error getting the standard info\n");
@@ -1107,10 +1103,7 @@ static int vpif_streamon(struct file *file, void *priv,
 		goto streamon_exit;
 	}
 
-	if (common->memory == V4L2_MEMORY_MMAP)
-		sizeimage = config_params.channel_bufsize[ch->channel_id];
-	else
-		sizeimage = common->fmt.fmt.pix.sizeimage;
+	sizeimage = common->fmt.fmt.pix.sizeimage;
 
 	if ((ch->vpifparams.std_info.width *
 		ch->vpifparams.std_info.height * 2) >
-- 
1.6.3.3