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Diffstat (limited to 'Documentation/media/uapi/dvb/fe-read-ber.rst')
| -rw-r--r-- | Documentation/media/uapi/dvb/fe-read-ber.rst | 50 |
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diff --git a/Documentation/media/uapi/dvb/fe-read-ber.rst b/Documentation/media/uapi/dvb/fe-read-ber.rst new file mode 100644 index 000000000..1e6a79567 --- /dev/null +++ b/Documentation/media/uapi/dvb/fe-read-ber.rst @@ -0,0 +1,50 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _FE_READ_BER: + +*********** +FE_READ_BER +*********** + +Name +==== + +FE_READ_BER + +.. attention:: This ioctl is deprecated. + +Synopsis +======== + +.. c:function:: int ioctl(int fd, FE_READ_BER, uint32_t *ber) + :name: FE_READ_BER + + +Arguments +========= + +``fd`` + File descriptor returned by :c:func:`open() <dvb-fe-open>`. + +``ber`` + The bit error rate is stored into \*ber. + + +Description +=========== + +This ioctl call returns the bit error rate for the signal currently +received/demodulated by the front-end. 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. + +Generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter. |