[media] v4l2-ctrls: prepare for array support

Add core support for N-dimensional arrays.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index d30da09b7b69..7915b1125bb5 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -74,13 +74,13 @@ struct v4l2_ctrl_ops {
   * @validate: validate the value. Return 0 on success and a negative value otherwise.
   */
 struct v4l2_ctrl_type_ops {
-        bool (*equal)(const struct v4l2_ctrl *ctrl,
+        bool (*equal)(const struct v4l2_ctrl *ctrl, u32 idx,
                       union v4l2_ctrl_ptr ptr1,
                       union v4l2_ctrl_ptr ptr2);
-        void (*init)(const struct v4l2_ctrl *ctrl,
+        void (*init)(const struct v4l2_ctrl *ctrl, u32 idx,
                      union v4l2_ctrl_ptr ptr);
         void (*log)(const struct v4l2_ctrl *ctrl);
-        int (*validate)(const struct v4l2_ctrl *ctrl,
+        int (*validate)(const struct v4l2_ctrl *ctrl, u32 idx,
                         union v4l2_ctrl_ptr ptr);
 };
 
@@ -111,6 +111,7 @@ typedef void (*v4l2_ctrl_notify_fnc)(struct v4l2_ctrl *ctrl, void *priv);
   * @is_ptr:    If set, then this control is an array and/or has type >= V4L2_CTRL_COMPOUND_TYPES
   *             and/or has type V4L2_CTRL_TYPE_STRING. In other words, struct
   *             v4l2_ext_control uses field p to point to the data.
+  * @is_array: If set, then this control contains an N-dimensional array.
   * @has_volatiles: If set, then one or more members of the cluster are volatile.
   *             Drivers should never touch this flag.
   * @call_notify: If set, then call the handler's notify function whenever the
@@ -169,6 +170,7 @@ struct v4l2_ctrl {
         unsigned int is_int:1;
         unsigned int is_string:1;
         unsigned int is_ptr:1;
+        unsigned int is_array:1;
         unsigned int has_volatiles:1;
         unsigned int call_notify:1;
         unsigned int manual_mode_value:8;