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media: add V4L2_SUBDEV_CAP_STREAMS
Add a subdev capability flag to expose to userspace if a subdev supports multiplexed streams. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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2 changed files with 7 additions and 1 deletions
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@ -446,6 +446,7 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
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struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
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struct v4l2_fh *vfh = file->private_data;
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bool ro_subdev = test_bit(V4L2_FL_SUBDEV_RO_DEVNODE, &vdev->flags);
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bool streams_subdev = sd->flags & V4L2_SUBDEV_FL_STREAMS;
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int rval;
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switch (cmd) {
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@ -454,7 +455,9 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
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memset(cap->reserved, 0, sizeof(cap->reserved));
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cap->version = LINUX_VERSION_CODE;
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cap->capabilities = ro_subdev ? V4L2_SUBDEV_CAP_RO_SUBDEV : 0;
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cap->capabilities =
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(ro_subdev ? V4L2_SUBDEV_CAP_RO_SUBDEV : 0) |
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(streams_subdev ? V4L2_SUBDEV_CAP_STREAMS : 0);
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return 0;
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}
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@ -175,6 +175,9 @@ struct v4l2_subdev_capability {
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/* The v4l2 sub-device video device node is registered in read-only mode. */
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#define V4L2_SUBDEV_CAP_RO_SUBDEV 0x00000001
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/* The v4l2 sub-device supports routing and multiplexed streams. */
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#define V4L2_SUBDEV_CAP_STREAMS 0x00000002
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/* Backwards compatibility define --- to be removed */
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#define v4l2_subdev_edid v4l2_edid
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