[media] v4l: VIDIOC_SUBDEV_S_SELECTION and VIDIOC_SUBDEV_G_SELECTION IOCTLs

Add support for VIDIOC_SUBDEV_S_SELECTION and VIDIOC_SUBDEV_G_SELECTION
IOCTLs. They replace functionality provided by VIDIOC_SUBDEV_S_CROP and
VIDIOC_SUBDEV_G_CROP IOCTLs and also add new functionality (composing).

VIDIOC_SUBDEV_G_CROP and VIDIOC_SUBDEV_S_CROP continue to be supported.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 17 insertions, 4 deletions

diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index f0f3358d1b1b..feab950bc8ab 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -466,6 +466,10 @@ struct v4l2_subdev_pad_ops {
                        struct v4l2_subdev_crop *crop);
         int (*get_crop)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
                        struct v4l2_subdev_crop *crop);
+        int (*get_selection)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+                             struct v4l2_subdev_selection *sel);
+        int (*set_selection)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+                             struct v4l2_subdev_selection *sel);
 };
 
 struct v4l2_subdev_ops {
@@ -549,8 +553,11 @@ struct v4l2_subdev {
 struct v4l2_subdev_fh {
         struct v4l2_fh vfh;
 #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
-        struct v4l2_mbus_framefmt *try_fmt;
-        struct v4l2_rect *try_crop;
+        struct {
+                struct v4l2_mbus_framefmt try_fmt;
+                struct v4l2_rect try_crop;
+                struct v4l2_rect try_compose;
+        } *pad;
 #endif
 };
 
@@ -561,13 +568,19 @@ struct v4l2_subdev_fh {
 static inline struct v4l2_mbus_framefmt *
 v4l2_subdev_get_try_format(struct v4l2_subdev_fh *fh, unsigned int pad)
 {
-        return &fh->try_fmt[pad];
+        return &fh->pad[pad].try_fmt;
 }
 
 static inline struct v4l2_rect *
 v4l2_subdev_get_try_crop(struct v4l2_subdev_fh *fh, unsigned int pad)
 {
-        return &fh->try_crop[pad];
+        return &fh->pad[pad].try_crop;
+}
+
+static inline struct v4l2_rect *
+v4l2_subdev_get_try_compose(struct v4l2_subdev_fh *fh, unsigned int pad)
+{
+        return &fh->pad[pad].try_compose;
 }
 #endif