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[media] v4l: ctrls: Unlocked variants of v4l2_ctrl_s_ctrl{,_int64}()

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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 <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Sakari Ailus 2014-06-12 13:09:42 -03:00 • committed by Mauro Carvalho Chehab
commit 0c4348ada0
2 changed files with 45 additions and 8 deletions
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27
include/media/v4l2-ctrls.h
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@ -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;