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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2014-06-12 13:09:42 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-21 20:10:48 -0300 |
| commit | 0c4348ada001181637b8f73482242166ba2fb56e (patch) | |
| tree | 819c95c0cc6a31fea3730f3c9254d04cc1cb2c6a /include/media/v4l2-ctrls.h | |
| parent | 5a573925159aeec1dd159627d849dc6c66000faf (diff) | |
| download | lwn-0c4348ada001181637b8f73482242166ba2fb56e.tar.gz lwn-0c4348ada001181637b8f73482242166ba2fb56e.zip | |
[media] v4l: ctrls: Unlocked variants of v4l2_ctrl_s_ctrl{,_int64}()
Implement unlocked variants of v4l2_ctrl_s_ctrl() and
v4l2_ctrl_s_ctrl_int64(). As drivers need to set controls as they access
driver internal state elsewhere than in the control framework unlocked
variants of these functions become handy.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'include/media/v4l2-ctrls.h')
| -rw-r--r-- | include/media/v4l2-ctrls.h | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h index 5d1a30ca29af..8c4edd69fa4b 100644 --- a/include/media/v4l2-ctrls.h +++ b/include/media/v4l2-ctrls.h @@ -679,6 +679,8 @@ void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void */ s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl); +/** __v4l2_ctrl_s_ctrl() - Unlocked variant of v4l2_ctrl_s_ctrl(). */ +int __v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val); /** v4l2_ctrl_s_ctrl() - Helper function to set the control's value from within a driver. * @ctrl: The control. * @val: The new value. @@ -689,7 +691,16 @@ s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl); * * This function is for integer type controls only. */ -int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val); +static inline int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val) +{ + int rval; + + v4l2_ctrl_lock(ctrl); + rval = __v4l2_ctrl_s_ctrl(ctrl, val); + v4l2_ctrl_unlock(ctrl); + + return rval; +} /** v4l2_ctrl_g_ctrl_int64() - Helper function to get a 64-bit control's value from within a driver. * @ctrl: The control. @@ -702,6 +713,9 @@ int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val); */ s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl); +/** __v4l2_ctrl_s_ctrl_int64() - Unlocked variant of v4l2_ctrl_s_ctrl_int64(). */ +int __v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val); + /** v4l2_ctrl_s_ctrl_int64() - Helper function to set a 64-bit control's value from within a driver. * @ctrl: The control. * @val: The new value. @@ -712,7 +726,16 @@ s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl); * * This function is for 64-bit integer type controls only. */ -int v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val); +static inline int v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val) +{ + int rval; + + v4l2_ctrl_lock(ctrl); + rval = __v4l2_ctrl_s_ctrl_int64(ctrl, val); + v4l2_ctrl_unlock(ctrl); + + return rval; +} /* Internal helper functions that deal with control events. */ extern const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops; |