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| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-08 11:40:06 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-08 11:59:40 -0300 |
| commit | 60c2820d0f6d3497975b6488e2599f8f611d8b95 (patch) | |
| tree | b3b03707c6438ea9b99cc57e847ebf517f968ab1 /Documentation/media/uapi/dvb/frontend.rst | |
| parent | a97369b5e21ea9b8b5fef7c0f4f48bbe60c07ca3 (diff) | |
doc_rst: rename the media Sphinx suff to Documentation/media
The name of the subsystem is "media", and not "linux_tv". Also,
as we plan to add other stuff there in the future, let's
rename also the media uAPI book to media_uapi, to make it
clearer.
No functional changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media/uapi/dvb/frontend.rst')
| -rw-r--r-- | Documentation/media/uapi/dvb/frontend.rst | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/media/uapi/dvb/frontend.rst b/Documentation/media/uapi/dvb/frontend.rst new file mode 100644 index 000000000000..8c7e502bff1f --- /dev/null +++ b/Documentation/media/uapi/dvb/frontend.rst @@ -0,0 +1,51 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _dvb_frontend: + +################ +DVB Frontend API +################ +The DVB frontend API was designed to support three types of delivery +systems: + +- Terrestrial systems: DVB-T, DVB-T2, ATSC, ATSC M/H, ISDB-T, DVB-H, + DTMB, CMMB + +- Cable systems: DVB-C Annex A/C, ClearQAM (DVB-C Annex B), ISDB-C + +- Satellite systems: DVB-S, DVB-S2, DVB Turbo, ISDB-S, DSS + +The DVB frontend controls several sub-devices including: + +- Tuner + +- Digital TV demodulator + +- Low noise amplifier (LNA) + +- Satellite Equipment Control (SEC) hardware (only for Satellite). + +The frontend can be accessed through ``/dev/dvb/adapter?/frontend?``. +Data types and ioctl definitions can be accessed by including +``linux/dvb/frontend.h`` in your application. + +NOTE: Transmission via the internet (DVB-IP) is not yet handled by this +API but a future extension is possible. + +On Satellite systems, the API support for the Satellite Equipment +Control (SEC) allows to power control and to send/receive signals to +control the antenna subsystem, selecting the polarization and choosing +the Intermediate Frequency IF) of the Low Noise Block Converter Feed +Horn (LNBf). It supports the DiSEqC and V-SEC protocols. The DiSEqC +(digital SEC) specification is available at +`Eutelsat <http://www.eutelsat.com/satellites/4_5_5.html>`__. + + +.. toctree:: + :maxdepth: 1 + + query-dvb-frontend-info + dvb-fe-read-status + dvbproperty + frontend_fcalls + frontend_legacy_dvbv3_api |