diff options
Diffstat (limited to 'Documentation/media/uapi/v4l/tuner.rst')
-rw-r--r-- | Documentation/media/uapi/v4l/tuner.rst | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/Documentation/media/uapi/v4l/tuner.rst b/Documentation/media/uapi/v4l/tuner.rst index 23d0e00aefdd..37eb4b9b95fb 100644 --- a/Documentation/media/uapi/v4l/tuner.rst +++ b/Documentation/media/uapi/v4l/tuner.rst @@ -26,13 +26,14 @@ To query and change tuner properties applications use the :ref:`VIDIOC_S_TUNER <VIDIOC_G_TUNER>` ioctls, respectively. The struct :ref:`v4l2_tuner <v4l2-tuner>` returned by :ref:`VIDIOC_G_TUNER <VIDIOC_G_TUNER>` also contains signal status information applicable when the tuner of the -current video or radio input is queried. Note that :ref:`VIDIOC_S_TUNER <VIDIOC_G_TUNER>` -does not switch the current tuner, when there is more than one at all. -The tuner is solely determined by the current video input. Drivers must -support both ioctls and set the ``V4L2_CAP_TUNER`` flag in the struct -:ref:`v4l2_capability <v4l2-capability>` returned by the -:ref:`VIDIOC_QUERYCAP` ioctl when the device has -one or more tuners. +current video or radio input is queried. + +.. note:: :ref:`VIDIOC_S_TUNER <VIDIOC_G_TUNER>` does not switch the + current tuner, when there is more than one at all. The tuner is solely + determined by the current video input. Drivers must support both ioctls + and set the ``V4L2_CAP_TUNER`` flag in the struct :ref:`v4l2_capability + <v4l2-capability>` returned by the :ref:`VIDIOC_QUERYCAP` ioctl when the + device has one or more tuners. Modulators |