diff options
Diffstat (limited to 'Documentation/media/uapi/v4l/vidioc-g-frequency.rst')
-rw-r--r-- | Documentation/media/uapi/v4l/vidioc-g-frequency.rst | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/Documentation/media/uapi/v4l/vidioc-g-frequency.rst b/Documentation/media/uapi/v4l/vidioc-g-frequency.rst index d517c7b..9cbe700 100644 --- a/Documentation/media/uapi/v4l/vidioc-g-frequency.rst +++ b/Documentation/media/uapi/v4l/vidioc-g-frequency.rst @@ -36,7 +36,7 @@ Description To get the current tuner or modulator radio frequency applications set the ``tuner`` field of a struct -:ref:`v4l2_frequency <v4l2-frequency>` to the respective tuner or +:c:type:`v4l2_frequency` to the respective tuner or modulator number (only input devices have tuners, only output devices have modulators), zero out the ``reserved`` array and call the :ref:`VIDIOC_G_FREQUENCY <VIDIOC_G_FREQUENCY>` ioctl with a pointer to this structure. The @@ -44,7 +44,7 @@ driver stores the current frequency in the ``frequency`` field. To change the current tuner or modulator radio frequency applications initialize the ``tuner``, ``type`` and ``frequency`` fields, and the -``reserved`` array of a struct :ref:`v4l2_frequency <v4l2-frequency>` +``reserved`` array of a struct :c:type:`v4l2_frequency` and call the :ref:`VIDIOC_S_FREQUENCY <VIDIOC_G_FREQUENCY>` ioctl with a pointer to this structure. When the requested frequency is not possible the driver assumes the closest possible value. However :ref:`VIDIOC_S_FREQUENCY <VIDIOC_G_FREQUENCY>` is a @@ -53,7 +53,7 @@ write-only ioctl, it does not return the actual new frequency. .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| -.. _v4l2-frequency: +.. c:type:: v4l2_frequency .. flat-table:: struct v4l2_frequency :header-rows: 0 @@ -68,10 +68,10 @@ write-only ioctl, it does not return the actual new frequency. - ``tuner`` - The tuner or modulator index number. This is the same value as in - the struct :ref:`v4l2_input <v4l2-input>` ``tuner`` field and - the struct :ref:`v4l2_tuner <v4l2-tuner>` ``index`` field, or - the struct :ref:`v4l2_output <v4l2-output>` ``modulator`` field - and the struct :ref:`v4l2_modulator <v4l2-modulator>` ``index`` + the struct :c:type:`v4l2_input` ``tuner`` field and + the struct :c:type:`v4l2_tuner` ``index`` field, or + the struct :c:type:`v4l2_output` ``modulator`` field + and the struct :c:type:`v4l2_modulator` ``index`` field. - .. row 2 @@ -81,7 +81,7 @@ write-only ioctl, it does not return the actual new frequency. - ``type`` - The tuner type. This is the same value as in the struct - :ref:`v4l2_tuner <v4l2-tuner>` ``type`` field. The type must be + :c:type:`v4l2_tuner` ``type`` field. The type must be set to ``V4L2_TUNER_RADIO`` for ``/dev/radioX`` device nodes, and to ``V4L2_TUNER_ANALOG_TV`` for all others. Set this field to ``V4L2_TUNER_RADIO`` for modulators (currently only radio @@ -94,8 +94,8 @@ write-only ioctl, it does not return the actual new frequency. - ``frequency`` - Tuning frequency in units of 62.5 kHz, or if the struct - :ref:`v4l2_tuner <v4l2-tuner>` or struct - :ref:`v4l2_modulator <v4l2-modulator>` ``capability`` flag + :c:type:`v4l2_tuner` or struct + :c:type:`v4l2_modulator` ``capability`` flag ``V4L2_TUNER_CAP_LOW`` is set, in units of 62.5 Hz. A 1 Hz unit is used when the ``capability`` flag ``V4L2_TUNER_CAP_1HZ`` is set. |