[media] v4l: v4l2_subdev userspace crop API

This patch adds the VIDIOC_SUBDEV_S_CROP and G_CROP ioctls to the
userland API. CROPCAP is not implemented because it's redundant.

Signed-off-by: Antti Koskipaa <akoskipa@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 19 insertions, 0 deletions

diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h
index c55f9e9e1dd..ed29cbbebfe 100644
--- a/include/linux/v4l2-subdev.h
+++ b/include/linux/v4l2-subdev.h
@@ -51,6 +51,19 @@ struct v4l2_subdev_format {
 };
 
 /**
+ * struct v4l2_subdev_crop - Pad-level crop settings
+ * @which: format type (from enum v4l2_subdev_format_whence)
+ * @pad: pad number, as reported by the media API
+ * @rect: pad crop rectangle boundaries
+ */
+struct v4l2_subdev_crop {
+        __u32 which;
+        __u32 pad;
+        struct v4l2_rect rect;
+        __u32 reserved[8];
+};
+
+/**
  * struct v4l2_subdev_mbus_code_enum - Media bus format enumeration
  * @pad: pad number, as reported by the media API
  * @index: format index during enumeration
@@ -122,5 +135,7 @@ struct v4l2_subdev_frame_interval_enum {
                         _IOWR('V', 74, struct v4l2_subdev_frame_size_enum)
 #define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \
                         _IOWR('V', 75, struct v4l2_subdev_frame_interval_enum)
+#define VIDIOC_SUBDEV_G_CROP    _IOWR('V', 59, struct v4l2_subdev_crop)
+#define VIDIOC_SUBDEV_S_CROP    _IOWR('V', 60, struct v4l2_subdev_crop)
 
 #endif
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 8b7a78a013c..edeaf398d48 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -431,6 +431,10 @@ struct v4l2_subdev_pad_ops {
                        struct v4l2_subdev_format *format);
         int (*set_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
                        struct v4l2_subdev_format *format);
+        int (*set_crop)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+                       struct v4l2_subdev_crop *crop);
+        int (*get_crop)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+                       struct v4l2_subdev_crop *crop);
 };
 
 struct v4l2_subdev_ops {