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Commit f437a7cb authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
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media: v4l2-subdev: implement VIDIOC_DBG_G_CHIP_INFO ioctl 



The VIDIOC_DBG_G/S_REGISTER ioctls imply that VIDIOC_DBG_G_CHIP_INFO is also
present, since without that you cannot use v4l2-dbg.

Just like the implementation in v4l2-ioctl.c this can be implemented in the
core and no drivers need to be modified.

It also makes it possible for v4l2-compliance to properly test the
VIDIOC_DBG_G/S_REGISTER ioctls.

Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 3103c7b4

drivers/media/v4l2-core/v4l2-subdev.c

+13 −0
Original line number Diff line number Diff line
@@ -263,6 +263,19 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) 
			return -EPERM;

		return v4l2_subdev_call(sd, core, s_register, p);

	}

	case VIDIOC_DBG_G_CHIP_INFO:

	{

		struct v4l2_dbg_chip_info *p = arg;



		if (p->match.type != V4L2_CHIP_MATCH_SUBDEV || p->match.addr)

			return -EINVAL;

		if (sd->ops->core && sd->ops->core->s_register)

			p->flags |= V4L2_CHIP_FL_WRITABLE;

		if (sd->ops->core && sd->ops->core->g_register)

			p->flags |= V4L2_CHIP_FL_READABLE;

		strlcpy(p->name, sd->name, sizeof(p->name));

		return 0;

	}

#endif



	case VIDIOC_LOG_STATUS: {