ENGR00301270 [V4L2 Capture] PXP V4L2 output can't report absolute physical address.

Add absolute physical address report by V4L2 driver after
this buffer has been mapped, which is requested by some
multimedia applications.

Signed-off-by: Fancy Fang <chen.fang@freescale.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/media/platform/mxc/output/mxc_pxp_v4l2.c b/drivers/media/platform/mxc/output/mxc_pxp_v4l2.c
index 68f601eefa53..56a09d382320 100644
--- a/drivers/media/platform/mxc/output/mxc_pxp_v4l2.c
+++ b/drivers/media/platform/mxc/output/mxc_pxp_v4l2.c
@@ -643,9 +643,17 @@ static int pxp_reqbufs(struct file *file, void *priv,
 static int pxp_querybuf(struct file *file, void *priv,
                         struct v4l2_buffer *b)
 {
+        int ret;
         struct pxps *pxp = video_get_drvdata(video_devdata(file));
 
-        return videobuf_querybuf(&pxp->s0_vbq, b);
+        ret = videobuf_querybuf(&pxp->s0_vbq, b);
+        if (!ret) {
+                struct videobuf_buffer *vb = pxp->s0_vbq.bufs[b->index];
+                if (b->flags & V4L2_BUF_FLAG_MAPPED)
+                        b->m.offset = videobuf_to_dma_contig(vb);
+        }
+
+        return ret;
 }
 
 static int pxp_qbuf(struct file *file, void *priv,