[media] soc-camera: Add plane layout information to struct soc_mbus_pixelfmt

To compute the value of the v4l2_pix_format::bytesperline field, we need
information about planes layout for planar formats. The new enum
soc_mbus_layout conveys that information.

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

1 files changed, 19 insertions, 0 deletions

diff --git a/include/media/soc_mediabus.h b/include/media/soc_mediabus.h
index 73f1e7eb60f3..e18eed4e5678 100644
--- a/include/media/soc_mediabus.h
+++ b/include/media/soc_mediabus.h
@@ -47,6 +47,24 @@ enum soc_mbus_order {
 };
 
 /**
+ * enum soc_mbus_layout - planes layout in memory
+ * @SOC_MBUS_LAYOUT_PACKED:             color components packed
+ * @SOC_MBUS_LAYOUT_PLANAR_2Y_U_V:      YUV components stored in 3 planes (4:2:2)
+ * @SOC_MBUS_LAYOUT_PLANAR_2Y_C:        YUV components stored in a luma and a
+ *                                      chroma plane (C plane is half the size
+ *                                      of Y plane)
+ * @SOC_MBUS_LAYOUT_PLANAR_Y_C:         YUV components stored in a luma and a
+ *                                      chroma plane (C plane is the same size
+ *                                      as Y plane)
+ */
+enum soc_mbus_layout {
+        SOC_MBUS_LAYOUT_PACKED = 0,
+        SOC_MBUS_LAYOUT_PLANAR_2Y_U_V,
+        SOC_MBUS_LAYOUT_PLANAR_2Y_C,
+        SOC_MBUS_LAYOUT_PLANAR_Y_C,
+};
+
+/**
  * struct soc_mbus_pixelfmt - Data format on the media bus
  * @name:               Name of the format
  * @fourcc:             Fourcc code, that will be obtained if the data is
@@ -60,6 +78,7 @@ struct soc_mbus_pixelfmt {
         u32                     fourcc;
         enum soc_mbus_packing   packing;
         enum soc_mbus_order     order;
+        enum soc_mbus_layout    layout;
         u8                      bits_per_sample;
 };