V4L/DVB (10090): soc-camera: let drivers decide upon supported field values

sh_mobile_ceu_camera.c is already prepared to support interlaced format, this
patch moves the choice of a field type down to host and / or camera drivers.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/media/video/pxa_camera.c b/drivers/media/video/pxa_camera.c
index c3c50de0aa50..b2d9fe5dfd61 100644
--- a/drivers/media/video/pxa_camera.c
+++ b/drivers/media/video/pxa_camera.c
@@ -1215,6 +1215,7 @@ static int pxa_camera_try_fmt(struct soc_camera_device *icd,
         const struct soc_camera_format_xlate *xlate;
         struct v4l2_pix_format *pix = &f->fmt.pix;
         __u32 pixfmt = pix->pixelformat;
+        enum v4l2_field field;
         int ret;
 
         xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
@@ -1244,6 +1245,15 @@ static int pxa_camera_try_fmt(struct soc_camera_device *icd,
         ret = icd->ops->try_fmt(icd, f);
         pix->pixelformat = xlate->host_fmt->fourcc;
 
+        field = pix->field;
+
+        if (field == V4L2_FIELD_ANY) {
+                pix->field = V4L2_FIELD_NONE;
+        } else if (field != V4L2_FIELD_NONE) {
+                dev_err(&icd->dev, "Field type %d unsupported.\n", field);
+                return -EINVAL;
+        }
+
         return ret;
 }