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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2018-05-21 04:54:36 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-08-31 11:09:34 -0400 |
| commit | da1b1aeac1aced231ac85329112a592dc14d173a (patch) | |
| tree | 03516d3b41e672110d082ad3c5a240ec526b1f44 /include/media/v4l2-ctrls.h | |
| parent | f23317adf6a726b9dbedbe3a0363846f597cc0e8 (diff) | |
| download | lwn-da1b1aeac1aced231ac85329112a592dc14d173a.tar.gz lwn-da1b1aeac1aced231ac85329112a592dc14d173a.zip | |
media: v4l2-ctrls: v4l2_ctrl_add_handler: add from_other_dev
Add a 'bool from_other_dev' argument: set to true if the two
handlers refer to different devices (e.g. it is true when
inheriting controls from a subdev into a main v4l2 bridge
driver).
This will be used later when implementing support for the
request API since we need to skip such controls.
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.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h index f615ba1b29dd..192e31c21faf 100644 --- a/include/media/v4l2-ctrls.h +++ b/include/media/v4l2-ctrls.h @@ -247,6 +247,8 @@ struct v4l2_ctrl { * @ctrl: The actual control information. * @helper: Pointer to helper struct. Used internally in * ``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. * * 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 @@ -257,6 +259,7 @@ struct v4l2_ctrl_ref { struct v4l2_ctrl_ref *next; struct v4l2_ctrl *ctrl; struct v4l2_ctrl_helper *helper; + bool from_other_dev; }; /** @@ -633,6 +636,8 @@ typedef bool (*v4l2_ctrl_filter)(const struct v4l2_ctrl *ctrl); * @add: The control handler whose controls you want to add to * the @hdl control handler. * @filter: This function will filter which controls should be added. + * @from_other_dev: If true, then the controls in @add were defined in another + * device than @hdl. * * Does nothing if either of the two handlers is a NULL pointer. * If @filter is NULL, then all controls are added. Otherwise only those @@ -642,7 +647,8 @@ typedef bool (*v4l2_ctrl_filter)(const struct v4l2_ctrl *ctrl); */ int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl, struct v4l2_ctrl_handler *add, - v4l2_ctrl_filter filter); + v4l2_ctrl_filter filter, + bool from_other_dev); /** * v4l2_ctrl_radio_filter() - Standard filter for radio controls. |