From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Embed and initialize a media_request_object in struct v4l2_ctrl_handler.
Add a p_req field to struct v4l2_ctrl_ref that will store the
request value.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-ctrls.c | 1 +
include/media/v4l2-ctrls.h | 7 +++++++
2 files changed, 8 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index aa1dd2015e84..d09f49530d9e 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1880,6 +1880,7 @@ int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl,
sizeof(hdl->buckets[0]),
GFP_KERNEL | __GFP_ZERO);
hdl->error = hdl->buckets ? 0 : -ENOMEM;
+ media_request_object_init(&hdl->req_obj);
return hdl->error;
}
EXPORT_SYMBOL(v4l2_ctrl_handler_init_class);
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index f8faa54b5e7e..89a985607126 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -20,6 +20,7 @@
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/videodev2.h>
+#include <media/media-request.h>
/* forward references */
struct file;
@@ -249,6 +250,8 @@ struct v4l2_ctrl {
* ``prepare_ext_ctrls`` function at ``v4l2-ctrl.c``.
* @from_other_dev: If true, then @ctrl was defined in another
* device then the &struct v4l2_ctrl_handler.
+ * @p_req: The request value. Only used if the control handler
+ * is bound to a media request.
*
* Each control handler has a list of these refs. The list_head is used to
* keep a sorted-by-control-ID list of all controls, while the next pointer
@@ -260,6 +263,7 @@ struct v4l2_ctrl_ref {
struct v4l2_ctrl *ctrl;
struct v4l2_ctrl_helper *helper;
bool from_other_dev;
+ union v4l2_ctrl_ptr p_req;
};
/**
@@ -283,6 +287,8 @@ struct v4l2_ctrl_ref {
* @notify_priv: Passed as argument to the v4l2_ctrl notify callback.
* @nr_of_buckets: Total number of buckets in the array.
* @error: The error code of the first failed control addition.
+ * @req_obj: The &struct media_request_object, used to link into a
+ * &struct media_request.
*/
struct v4l2_ctrl_handler {
struct mutex _lock;
@@ -295,6 +301,7 @@ struct v4l2_ctrl_handler {
void *notify_priv;
u16 nr_of_buckets;
int error;
+ struct media_request_object req_obj;
};
/**
--
2.16.1
