+static int soc_camera_init_user_formats(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ int i, fmts = 0;
+
+ if (!ici->ops->get_formats)
+ /*
+ * Fallback mode - the host will have to serve all
+ * sensor-provided formats one-to-one to the user
+ */
+ fmts = icd->num_formats;
+ else
+ /*
+ * First pass - only count formats this host-sensor
+ * configuration can provide
+ */
+ for (i = 0; i < icd->num_formats; i++)
+ fmts += ici->ops->get_formats(icd, i, NULL);
+
+ if (!fmts)
+ return -ENXIO;
+
+ icd->user_formats =
+ vmalloc(fmts * sizeof(struct soc_camera_format_xlate));
+ if (!icd->user_formats)
+ return -ENOMEM;
+
+ icd->num_user_formats = fmts;
+ fmts = 0;
+
+ dev_dbg(&icd->dev, "Found %d supported formats.\n", fmts);
+
+ /* Second pass - actually fill data formats */
+ for (i = 0; i < icd->num_formats; i++)
+ if (!ici->ops->get_formats) {
+ icd->user_formats[i].host_fmt = icd->formats + i;
+ icd->user_formats[i].cam_fmt = icd->formats + i;
+ icd->user_formats[i].buswidth = icd->formats[i].depth;
+ } else {
+ fmts += ici->ops->get_formats(icd, i,
+ &icd->user_formats[fmts]);
+ }
+
+ icd->current_fmt = icd->user_formats[0].host_fmt;
+
+ return 0;
+}
+
+static void soc_camera_free_user_formats(struct soc_camera_device *icd)
+{
+ vfree(icd->user_formats);
+}
+
+/* Called with .vb_lock held */
+static int soc_camera_set_fmt(struct soc_camera_file *icf,
+ struct v4l2_format *f)
+{
+ struct soc_camera_device *icd = icf->icd;
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ int ret;
+
+ /* We always call try_fmt() before set_fmt() or set_crop() */
+ ret = ici->ops->try_fmt(icd, f);
+ if (ret < 0)
+ return ret;
+
+ ret = ici->ops->set_fmt(icd, f);
+ if (ret < 0) {
+ return ret;
+ } else if (!icd->current_fmt ||
+ icd->current_fmt->fourcc != pix->pixelformat) {
+ dev_err(&ici->dev,
+ "Host driver hasn't set up current format correctly!\n");
+ return -EINVAL;
+ }
+
+ icd->width = pix->width;
+ icd->height = pix->height;
+ icf->vb_vidq.field =
+ icd->field = pix->field;
+
+ if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ dev_warn(&icd->dev, "Attention! Wrong buf-type %d\n",
+ f->type);
+
+ dev_dbg(&icd->dev, "set width: %d height: %d\n",
+ icd->width, icd->height);
+
+ /* set physical bus parameters */
+ return ici->ops->set_bus_param(icd, pix->pixelformat);
+}
+
+static int soc_camera_open(struct file *file)