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authorHans Verkuil <hans.verkuil@cisco.com>2018-05-21 04:54:37 -0400
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2018-08-31 11:10:25 -0400
commit52beeddb68833e02c0923bc46868b347a6ad393c (patch)
treea2562a390f3607091b86d8903684ccb1a4214a3a /include/media/v4l2-ctrls.h
parentda1b1aeac1aced231ac85329112a592dc14d173a (diff)
media: v4l2-ctrls: prepare internal structs for request API
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@cisco.com> Signed-off-by: Alexandre Courbot <acourbot@chromium.org> Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'include/media/v4l2-ctrls.h')
-rw-r--r--include/media/v4l2-ctrls.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index 192e31c21faf..3f4e062d4e3d 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 +250,11 @@ struct v4l2_ctrl {
* ``prepare_ext_ctrls`` function at ``v4l2-ctrl.c``.
* @from_other_dev: If true, then @ctrl was defined in another
* device than the &struct v4l2_ctrl_handler.
+ * @p_req: If the control handler containing this control reference
+ * is bound to a media request, then this points to the
+ * value of the control that should be applied when the request
+ * is executed, or to the value of the control at the time
+ * that the request was completed.
*
* 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 +266,7 @@ 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 +290,8 @@ 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. This request object has a refcount.
*/
struct v4l2_ctrl_handler {
struct mutex _lock;
@@ -295,6 +304,7 @@ struct v4l2_ctrl_handler {
void *notify_priv;
u16 nr_of_buckets;
int error;
+ struct media_request_object req_obj;
};
/**