Commit 96655553 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files

[media] v4l2-device.h: add v4l2_device_mask_ variants 



The v4l2_device_call_* defines filter subdevs based on the grp_id value.
But some drivers use a bitmask, so instead of filtering by grp_id == value,
you want to filter by grp_id & value.

Make variants of these defines to do this.

The 'has_op' define has been extended to have a grp_id argument as well, and
a mask variant has been added.

This extra argument required a change to go7007.

Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent bae4c757

drivers/media/usb/go7007/go7007-v4l2.c

+1 −1
Original line number Diff line number Diff line
@@ -1125,7 +1125,7 @@ int go7007_v4l2_init(struct go7007 *go) 
	vdev->queue = &go->vidq;

	video_set_drvdata(vdev, go);

	vdev->v4l2_dev = &go->v4l2_dev;

	if (!v4l2_device_has_op(&go->v4l2_dev, video, querystd))

	if (!v4l2_device_has_op(&go->v4l2_dev, 0, video, querystd))

		v4l2_disable_ioctl(vdev, VIDIOC_QUERYSTD);

	if (!(go->board_info->flags & GO7007_BOARD_HAS_TUNER)) {

		v4l2_disable_ioctl(vdev, VIDIOC_S_FREQUENCY);

include/media/v4l2-device.h

+54 −1
Original line number Diff line number Diff line
@@ -196,11 +196,64 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd, 
			##args);					\

})



#define v4l2_device_has_op(v4l2_dev, o, f)				\

/*

 * Call the specified callback for all subdevs where grp_id & grpmsk != 0

 * (if grpmsk == `0, then match them all). Ignore any errors. Note that you

 * cannot add or delete a subdev while walking the subdevs list.

 */

#define v4l2_device_mask_call_all(v4l2_dev, grpmsk, o, f, args...)	\

	do {								\

		struct v4l2_subdev *__sd;				\

									\

		__v4l2_device_call_subdevs_p(v4l2_dev, __sd,		\

			!(grpmsk) || (__sd->grp_id & (grpmsk)), o, f ,	\

			##args);					\

	} while (0)



/*

 * Call the specified callback for all subdevs where grp_id & grpmsk != 0

 * (if grpmsk == `0, then match them all). If the callback returns an error

 * other than 0 or -ENOIOCTLCMD, then return with that error code. Note that

 * you cannot add or delete a subdev while walking the subdevs list.

 */

#define v4l2_device_mask_call_until_err(v4l2_dev, grpmsk, o, f, args...) \

({									\

	struct v4l2_subdev *__sd;					\

	__v4l2_device_call_subdevs_until_err_p(v4l2_dev, __sd,		\

			!(grpmsk) || (__sd->grp_id & (grpmsk)), o, f ,	\

			##args);					\

})



/*

 * Does any subdev with matching grpid (or all if grpid == 0) has the given

 * op?

 */

#define v4l2_device_has_op(v4l2_dev, grpid, o, f)			\

({									\

	struct v4l2_subdev *__sd;					\

	bool __result = false;						\

	list_for_each_entry(__sd, &(v4l2_dev)->subdevs, list) {		\

		if ((grpid) && __sd->grp_id != (grpid))			\

			continue;					\

		if (v4l2_subdev_has_op(__sd, o, f)) {			\

			__result = true;				\

			break;						\

		}							\

	}								\

	__result;							\

})



/*

 * Does any subdev with matching grpmsk (or all if grpmsk == 0) has the given

 * op?

 */

#define v4l2_device_mask_has_op(v4l2_dev, grpmsk, o, f)			\

({									\

	struct v4l2_subdev *__sd;					\

	bool __result = false;						\

	list_for_each_entry(__sd, &(v4l2_dev)->subdevs, list) {		\

		if ((grpmsk) && !(__sd->grp_id & (grpmsk)))		\

			continue;					\

		if (v4l2_subdev_has_op(__sd, o, f)) {			\

			__result = true;				\

			break;						\

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