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Diffstat (limited to 'Documentation/media/uapi/dvb/fe-get-frontend.rst')
| -rw-r--r-- | Documentation/media/uapi/dvb/fe-get-frontend.rst | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/media/uapi/dvb/fe-get-frontend.rst b/Documentation/media/uapi/dvb/fe-get-frontend.rst new file mode 100644 index 000000000..5db552ced --- /dev/null +++ b/Documentation/media/uapi/dvb/fe-get-frontend.rst @@ -0,0 +1,62 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _FE_GET_FRONTEND: + +*************** +FE_GET_FRONTEND +*************** + +Name +==== + +FE_GET_FRONTEND + +.. attention:: This ioctl is deprecated. + + +Synopsis +======== + +.. c:function:: int ioctl(int fd, FE_GET_FRONTEND, struct dvb_frontend_parameters *p) + :name: FE_GET_FRONTEND + + +Arguments +========= + +``fd`` + File descriptor returned by :c:func:`open() <dvb-fe-open>`. + + +``p`` + Points to parameters for tuning operation. + + +Description +=========== + +This ioctl call queries the currently effective frontend parameters. For +this command, read-only access to the device is sufficient. + + +Return Value +============ + +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + + - .. row 1 + + - ``EINVAL`` + + - Maximum supported symbol rate reached. + +Generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter. |