[media] media: videobuf2: Restructure vb2_buffer

Remove v4l2 stuff - v4l2_buf, v4l2_plane - from struct vb2_buffer.

Add new member variables - bytesused, length, offset, userptr, fd,
data_offset - to struct vb2_plane in order to cover all information
of v4l2_plane.
struct vb2_plane {
        <snip>
        unsigned int            bytesused;
        unsigned int            length;
        union {
                unsigned int    offset;
                unsigned long   userptr;
                int             fd;
        } m;
        unsigned int            data_offset;
}

Replace v4l2_buf with new member variables - index, type, memory - which
are common fields for buffer management.
struct vb2_buffer {
        <snip>
        unsigned int            index;
        unsigned int            type;
        unsigned int            memory;
        unsigned int            num_planes;
        struct vb2_plane        planes[VIDEO_MAX_PLANES];
        <snip>
};

v4l2 specific fields - flags, field, timestamp, timecode,
sequence - are moved to vb2_v4l2_buffer in videobuf2-v4l2.c
struct vb2_v4l2_buffer {
        struct vb2_buffer       vb2_buf;

        __u32                   flags;
        __u32                   field;
        struct timeval          timestamp;
        struct v4l2_timecode    timecode;
        __u32                   sequence;
};

Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
index a5f5481..b29bb64 100644
--- a/drivers/media/platform/davinci/vpif_capture.c
+++ b/drivers/media/platform/davinci/vpif_capture.c
@@ -57,7 +57,8 @@
 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
 static int ycmux_mode;
 
-static inline struct vpif_cap_buffer *to_vpif_buffer(struct vb2_buffer *vb)
+static inline
+struct vpif_cap_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb)
 {
 	return container_of(vb, struct vpif_cap_buffer, vb);
 }
@@ -72,6 +73,7 @@
  */
 static int vpif_buffer_prepare(struct vb2_buffer *vb)
 {
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 	struct vb2_queue *q = vb->vb2_queue;
 	struct channel_obj *ch = vb2_get_drv_priv(q);
 	struct common_obj *common;
@@ -85,7 +87,7 @@
 	if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
 		return -EINVAL;
 
-	vb->v4l2_buf.field = common->fmt.fmt.pix.field;
+	vbuf->field = common->fmt.fmt.pix.field;
 
 	addr = vb2_dma_contig_plane_dma_addr(vb, 0);
 	if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
@@ -145,8 +147,9 @@
  */
 static void vpif_buffer_queue(struct vb2_buffer *vb)
 {
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 	struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
-	struct vpif_cap_buffer *buf = to_vpif_buffer(vb);
+	struct vpif_cap_buffer *buf = to_vpif_buffer(vbuf);
 	struct common_obj *common;
 	unsigned long flags;
 
@@ -214,7 +217,7 @@
 	list_del(&common->cur_frm->list);
 	spin_unlock_irqrestore(&common->irqlock, flags);
 
-	addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
+	addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 0);
 
 	common->set_addr(addr + common->ytop_off,
 			 addr + common->ybtm_off,
@@ -243,7 +246,7 @@
 err:
 	list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
 		list_del(&buf->list);
-		vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
+		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
 	}
 	spin_unlock_irqrestore(&common->irqlock, flags);
 
@@ -286,13 +289,14 @@
 	/* release all active buffers */
 	spin_lock_irqsave(&common->irqlock, flags);
 	if (common->cur_frm == common->next_frm) {
-		vb2_buffer_done(&common->cur_frm->vb, VB2_BUF_STATE_ERROR);
+		vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
+				VB2_BUF_STATE_ERROR);
 	} else {
 		if (common->cur_frm != NULL)
-			vb2_buffer_done(&common->cur_frm->vb,
+			vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
 					VB2_BUF_STATE_ERROR);
 		if (common->next_frm != NULL)
-			vb2_buffer_done(&common->next_frm->vb,
+			vb2_buffer_done(&common->next_frm->vb.vb2_buf,
 					VB2_BUF_STATE_ERROR);
 	}
 
@@ -300,7 +304,8 @@
 		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);
+		vb2_buffer_done(&common->next_frm->vb.vb2_buf,
+				VB2_BUF_STATE_ERROR);
 	}
 	spin_unlock_irqrestore(&common->irqlock, flags);
 }
@@ -325,9 +330,8 @@
  */
 static void vpif_process_buffer_complete(struct common_obj *common)
 {
-	v4l2_get_timestamp(&common->cur_frm->vb.v4l2_buf.timestamp);
-	vb2_buffer_done(&common->cur_frm->vb,
-					    VB2_BUF_STATE_DONE);
+	v4l2_get_timestamp(&common->cur_frm->vb.timestamp);
+	vb2_buffer_done(&common->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
 	/* Make curFrm pointing to nextFrm */
 	common->cur_frm = common->next_frm;
 }
@@ -350,7 +354,7 @@
 	/* Remove that buffer from the buffer queue */
 	list_del(&common->next_frm->list);
 	spin_unlock(&common->irqlock);
-	addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
+	addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0);
 
 	/* Set top and bottom field addresses in VPIF registers */
 	common->set_addr(addr + common->ytop_off,