The CSIS is connected to its sink through an SoC-specific gasket that
needs to be configured. Depending on the platform, the gasket
configuration requires knowing the CSI-2 DT. To provide the needed
information, implement the .get_frame_desc() operation.
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/nxp/imx-mipi-csis.c | 27 ++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/drivers/media/platform/nxp/imx-mipi-csis.c b/drivers/media/platform/nxp/imx-mipi-csis.c
index 8674aaad5fa0..905072871ed2 100644
--- a/drivers/media/platform/nxp/imx-mipi-csis.c
+++ b/drivers/media/platform/nxp/imx-mipi-csis.c
@@ -1160,6 +1160,32 @@ static int mipi_csis_set_fmt(struct v4l2_subdev *sd,
return 0;
}
+static int mipi_csis_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
+ struct v4l2_mbus_frame_desc *fd)
+{
+ struct mipi_csis_device *csis = sd_to_mipi_csis_device(sd);
+ struct v4l2_mbus_frame_desc_entry *entry = &fd->entry[0];
+
+ if (pad != CSIS_PAD_SOURCE)
+ return -EINVAL;
+
+ fd->type = V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL;
+ fd->num_entries = 1;
+
+ memset(entry, 0, sizeof(*entry));
+
+ mutex_lock(&csis->lock);
+
+ entry->flags = 0;
+ entry->pixelcode = csis->csis_fmt->code;
+ entry->bus.csi2.vc = 0;
+ entry->bus.csi2.dt = csis->csis_fmt->data_type;
+
+ mutex_unlock(&csis->lock);
+
+ return 0;
+}
+
static int mipi_csis_log_status(struct v4l2_subdev *sd)
{
struct mipi_csis_device *csis = sd_to_mipi_csis_device(sd);
@@ -1184,6 +1210,7 @@ static const struct v4l2_subdev_pad_ops mipi_csis_pad_ops = {
.enum_mbus_code = mipi_csis_enum_mbus_code,
.get_fmt = mipi_csis_get_fmt,
.set_fmt = mipi_csis_set_fmt,
+ .get_frame_desc = mipi_csis_get_frame_desc,
};
static const struct v4l2_subdev_ops mipi_csis_subdev_ops = {
--
Regards,
Laurent Pinchart
