Another set of DVB documentation patches
Subsystems (2)
PATCH 1/14 media: dvb uapi docs: better organize header files
In reply to Mauro Carvalho ChehabInstead of having one chapter per file, place all of them at the same chapter. That better organize the chapters at the uAPI documentation.
As a side effect, now all uAPI headers are at the same page, at the html output, with makes easier to use it as a reference index for the spec.
--- Documentation/media/uapi/dvb/audio_h.rst | 9 --------- Documentation/media/uapi/dvb/ca_h.rst | 9 --------- Documentation/media/uapi/dvb/dmx_h.rst | 9 --------- Documentation/media/uapi/dvb/dvbapi.rst | 7 +------ Documentation/media/uapi/dvb/frontend_h.rst | 9 --------- Documentation/media/uapi/dvb/headers.rst | 21 +++++++++++++++++++++ Documentation/media/uapi/dvb/net_h.rst | 9 --------- Documentation/media/uapi/dvb/video_h.rst | 9 --------- 8 files changed, 22 insertions(+), 60 deletions(-) delete mode 100644 Documentation/media/uapi/dvb/audio_h.rst delete mode 100644 Documentation/media/uapi/dvb/ca_h.rst delete mode 100644 Documentation/media/uapi/dvb/dmx_h.rst delete mode 100644 Documentation/media/uapi/dvb/frontend_h.rst create mode 100644 Documentation/media/uapi/dvb/headers.rst delete mode 100644 Documentation/media/uapi/dvb/net_h.rst delete mode 100644 Documentation/media/uapi/dvb/video_h.rst
Documentation/media/uapi/dvb/audio_h.rst deleted +0 -9
@@ -1,9 +0,0 @@ -.. -*- coding: utf-8; mode: rst -*- - -.. _audio_h: - -********************* -DVB Audio Header File -********************* - -.. kernel-include:: $BUILDDIR/audio.h.rst
Documentation/media/uapi/dvb/ca_h.rst deleted +0 -9
@@ -1,9 +0,0 @@ -.. -*- coding: utf-8; mode: rst -*- - -.. _ca_h: - -********************************** -DVB Conditional Access Header File -********************************** - -.. kernel-include:: $BUILDDIR/ca.h.rst
Documentation/media/uapi/dvb/dmx_h.rst deleted +0 -9
@@ -1,9 +0,0 @@ -.. -*- coding: utf-8; mode: rst -*- - -.. _dmx_h: - -********************* -DVB Demux Header File -********************* - -.. kernel-include:: $BUILDDIR/dmx.h.rst
Documentation/media/uapi/dvb/dvbapi.rst +1 -6
@@ -30,12 +30,7 @@ Part II - Digital TV API net legacy_dvb_apis examples - audio_h - ca_h - dmx_h - frontend_h - net_h - video_h + headers **********************
Documentation/media/uapi/dvb/frontend_h.rst deleted +0 -9
@@ -1,9 +0,0 @@ -.. -*- coding: utf-8; mode: rst -*- - -.. _frontend_h: - -************************ -DVB Frontend Header File -************************ - -.. kernel-include:: $BUILDDIR/frontend.h.rst
Documentation/media/uapi/dvb/headers.rst new file +21 -0
@@ -0,0 +1,21 @@ +**************************** +Digital TV uAPI header files +**************************** + +Digital TV uAPI headers +*********************** + +.. kernel-include:: $BUILDDIR/frontend.h.rst + +.. kernel-include:: $BUILDDIR/dmx.h.rst + +.. kernel-include:: $BUILDDIR/ca.h.rst + +.. kernel-include:: $BUILDDIR/net.h.rst + +Legacy uAPI +*********** + +.. kernel-include:: $BUILDDIR/audio.h.rst + +.. kernel-include:: $BUILDDIR/video.h.rst
Documentation/media/uapi/dvb/net_h.rst deleted +0 -9
@@ -1,9 +0,0 @@ -.. -*- coding: utf-8; mode: rst -*- - -.. _net_h: - -*********************** -DVB Network Header File -*********************** - -.. kernel-include:: $BUILDDIR/net.h.rst
Documentation/media/uapi/dvb/video_h.rst deleted +0 -9
@@ -1,9 +0,0 @@ -.. -*- coding: utf-8; mode: rst -*- - -.. _video_h: - -********************* -DVB Video Header File -********************* - -.. kernel-include:: $BUILDDIR/video.h.rst
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2.13.5
PATCH 5/14 media: ca-fopen.rst: Fixes the device node name for CA
In reply to Mauro Carvalho ChehabThe device node name for CA is wrong since ever. I suspect that the name there was before DVBv3 (with was the first API introduced at the Kernel).
Anyway, use the right name there.
--- Documentation/media/uapi/dvb/ca-fopen.rst | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
Documentation/media/uapi/dvb/ca-fopen.rst +2 -2
@@ -49,8 +49,8 @@ Arguments Description ----------- -This system call opens a named ca device (e.g. /dev/ost/ca) for -subsequent use. +This system call opens a named ca device (e.g. ``/dev/dvb/adapter?/ca?``) +for subsequent use. When an open() call has succeeded, the device will be ready for use. The significance of blocking or non-blocking mode is described in the
Signature · 1 line
2.13.5
PATCH 8/14 media: dvb-frontend-parameters.rst: fix the name of a struct
In reply to Mauro Carvalho ChehabThe struct that contains an union of DVB parameters is called dvb_frontend_parameters (and not FrontendParameters).
Fix it.
--- Documentation/media/uapi/dvb/dvb-frontend-parameters.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Documentation/media/uapi/dvb/dvb-frontend-parameters.rst +1 -1
@@ -24,7 +24,7 @@ instead, in order to be able to support the newer System Delivery like DVB-S2, DVB-T2, DVB-C2, ISDB, etc. All kinds of parameters are combined as a union in the -FrontendParameters structure: +``dvb_frontend_parameters`` structure: .. code-block:: c
Signature · 1 line
2.13.5
PATCH 14/14 media: frontend.h: Avoid the term DVB when doesn't refer to a delivery system
In reply to Mauro Carvalho ChehabThe DVB term can either refer to the subsystem or to a delivery system. Avoid it in the first case at the kernel-doc markups.
--- include/uapi/linux/dvb/frontend.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
include/uapi/linux/dvb/frontend.h +3 -3
@@ -239,11 +239,11 @@ enum fe_sec_mini_cmd {* @FE_NONE: The frontend doesn't have any kind of lock. * That's the initial frontend status * @FE_HAS_SIGNAL: Has found something above the noise level. -* @FE_HAS_CARRIER: Has found a DVB signal. +* @FE_HAS_CARRIER: Has found a signal. * @FE_HAS_VITERBI: FEC inner coding (Viterbi, LDPC or other inner code). * is stable. * @FE_HAS_SYNC: Synchronization bytes was found. -* @FE_HAS_LOCK: DVB were locked and everything is working. +* @FE_HAS_LOCK: Digital TV were locked and everything is working. * @FE_TIMEDOUT: Fo lock within the last about 2 seconds. * @FE_REINIT: Frontend was reinitialized, application is recommended * to reset DiSEqC, tone and parameters.
@@ -269,7 +269,7 @@ enum fe_status {* This parameter indicates if spectral inversion should be presumed or * not. In the automatic setting (``INVERSION_AUTO``) the hardware will try * to figure out the correct setting by itself. If the hardware doesn't -* support, the DVB core will try to lock at the carrier first with +* support, the %dvb_frontend will try to lock at the carrier first with * inversion off. If it fails, it will try to enable inversion. */ enum fe_spectral_inversion {
Signature · 1 line
2.13.5
cover Another set of DVB documentation patches
This series should come after this series:
[PATCH v2 00/26] Improve DVB documentation and reduce its gap (with actually has 27 patches :-p )
It adds documentation for a dmx.h ioctl (DMX_GET_PES_PIDS) and do a cleanup at the documentation, to make it more coherent with the other media uAPI docs. In particular, it fixes the error codes for ioctls, removing redundant and non-existing error codes.
It also fixes some random other problems I found while re-reading the documentation.
Mauro Carvalho Chehab (14):
media: dvb uapi docs: better organize header files
media: gen-errors.rst: remove row number comments
media: gen-errors.rst: document ENXIO error code
media: dvb uAPI docs: adjust return value ioctl descriptions
media: ca-fopen.rst: Fixes the device node name for CA
media: dvb uAPI docs: Prefer use "Digital TV instead of "DVB"
media: dmx-fread.rst: specify how DMX_CHECK_CRC works
media: dvb-frontend-parameters.rst: fix the name of a struct
media: dvbapi.rst: add an entry to DVB revision history
media: dvb uAPI docs: minor editorial changes
media: dmx-get-pes-pids.rst: document the ioctl
media: dvbstb.svg: use dots for the optional parts of the hardware
media: intro.rst: don't assume audio and video codecs to be MPEG2
media: frontend.h: Avoid the term DVB when doesn't refer to a delivery
system
.../media/uapi/dvb/audio-channel-select.rst | 2 +- Documentation/media/uapi/dvb/audio-fclose.rst | 8 +-- Documentation/media/uapi/dvb/audio-fopen.rst | 8 +-- Documentation/media/uapi/dvb/audio-fwrite.rst | 8 +-- Documentation/media/uapi/dvb/audio-set-av-sync.rst | 2 +- .../media/uapi/dvb/audio-set-bypass-mode.rst | 6 +- Documentation/media/uapi/dvb/audio-set-mute.rst | 2 +- Documentation/media/uapi/dvb/audio.rst | 13 ++-- Documentation/media/uapi/dvb/audio_h.rst | 9 --- Documentation/media/uapi/dvb/ca-fclose.rst | 21 +++--- Documentation/media/uapi/dvb/ca-fopen.rst | 71 +++++++------------- Documentation/media/uapi/dvb/ca-get-cap.rst | 4 +- Documentation/media/uapi/dvb/ca-get-msg.rst | 9 ++- Documentation/media/uapi/dvb/ca-get-slot-info.rst | 10 ++- Documentation/media/uapi/dvb/ca-reset.rst | 8 ++- Documentation/media/uapi/dvb/ca-send-msg.rst | 8 ++- Documentation/media/uapi/dvb/ca-set-descr.rst | 8 ++- Documentation/media/uapi/dvb/ca.rst | 11 +-- Documentation/media/uapi/dvb/ca_h.rst | 9 --- Documentation/media/uapi/dvb/demux.rst | 13 ++-- Documentation/media/uapi/dvb/dmx-add-pid.rst | 12 ++-- Documentation/media/uapi/dvb/dmx-fclose.rst | 26 ++++---- Documentation/media/uapi/dvb/dmx-fopen.rst | 66 ++++++++---------- Documentation/media/uapi/dvb/dmx-fread.rst | 78 +++++++++------------- Documentation/media/uapi/dvb/dmx-fwrite.rst | 41 ++++++------ Documentation/media/uapi/dvb/dmx-get-pes-pids.rst | 30 +++++++-- Documentation/media/uapi/dvb/dmx-get-stc.rst | 28 +++++--- Documentation/media/uapi/dvb/dmx-remove-pid.rst | 12 ++-- .../media/uapi/dvb/dmx-set-buffer-size.rst | 11 ++- Documentation/media/uapi/dvb/dmx-set-filter.rst | 13 ++-- .../media/uapi/dvb/dmx-set-pes-filter.rst | 12 +++- Documentation/media/uapi/dvb/dmx-start.rst | 15 +++-- Documentation/media/uapi/dvb/dmx-stop.rst | 12 ++-- Documentation/media/uapi/dvb/dmx_h.rst | 9 --- .../media/uapi/dvb/dvb-fe-read-status.rst | 2 +- .../media/uapi/dvb/dvb-frontend-parameters.rst | 2 +- Documentation/media/uapi/dvb/dvbapi.rst | 39 +++++++---- Documentation/media/uapi/dvb/dvbproperty.rst | 4 +- Documentation/media/uapi/dvb/dvbstb.svg | 31 +++++---- Documentation/media/uapi/dvb/examples.rst | 4 +- .../media/uapi/dvb/fe-diseqc-recv-slave-reply.rst | 8 ++- .../media/uapi/dvb/fe-diseqc-reset-overload.rst | 10 ++- .../media/uapi/dvb/fe-diseqc-send-burst.rst | 8 ++- .../media/uapi/dvb/fe-diseqc-send-master-cmd.rst | 11 ++- .../uapi/dvb/fe-dishnetwork-send-legacy-cmd.rst | 8 ++- .../media/uapi/dvb/fe-enable-high-lnb-voltage.rst | 8 ++- Documentation/media/uapi/dvb/fe-get-event.rst | 9 ++- Documentation/media/uapi/dvb/fe-get-frontend.rst | 10 +-- Documentation/media/uapi/dvb/fe-get-info.rst | 15 +++-- Documentation/media/uapi/dvb/fe-get-property.rst | 10 ++- Documentation/media/uapi/dvb/fe-read-ber.rst | 8 ++- .../media/uapi/dvb/fe-read-signal-strength.rst | 8 ++- Documentation/media/uapi/dvb/fe-read-snr.rst | 8 ++- Documentation/media/uapi/dvb/fe-read-status.rst | 10 ++- .../media/uapi/dvb/fe-read-uncorrected-blocks.rst | 8 ++- .../media/uapi/dvb/fe-set-frontend-tune-mode.rst | 12 ++-- Documentation/media/uapi/dvb/fe-set-frontend.rst | 15 +++-- Documentation/media/uapi/dvb/fe-set-tone.rst | 8 ++- Documentation/media/uapi/dvb/fe-set-voltage.rst | 8 ++- Documentation/media/uapi/dvb/fe-type-t.rst | 2 +- .../media/uapi/dvb/fe_property_parameters.rst | 4 +- .../dvb/frontend-property-terrestrial-systems.rst | 2 +- Documentation/media/uapi/dvb/frontend.rst | 10 +-- Documentation/media/uapi/dvb/frontend_f_close.rst | 16 +++-- Documentation/media/uapi/dvb/frontend_f_open.rst | 44 +++++++----- Documentation/media/uapi/dvb/frontend_h.rst | 9 --- .../media/uapi/dvb/frontend_legacy_dvbv3_api.rst | 6 +- Documentation/media/uapi/dvb/headers.rst | 21 ++++++ Documentation/media/uapi/dvb/intro.rst | 27 ++++---- Documentation/media/uapi/dvb/legacy_dvb_apis.rst | 6 +- Documentation/media/uapi/dvb/net-add-if.rst | 10 ++- Documentation/media/uapi/dvb/net-get-if.rst | 8 ++- Documentation/media/uapi/dvb/net-remove-if.rst | 8 ++- Documentation/media/uapi/dvb/net.rst | 13 ++-- Documentation/media/uapi/dvb/net_h.rst | 9 --- .../media/uapi/dvb/query-dvb-frontend-info.rst | 4 +- Documentation/media/uapi/dvb/video-continue.rst | 2 +- Documentation/media/uapi/dvb/video-freeze.rst | 4 +- Documentation/media/uapi/dvb/video-get-event.rst | 2 +- Documentation/media/uapi/dvb/video-play.rst | 2 +- .../media/uapi/dvb/video-select-source.rst | 2 +- Documentation/media/uapi/dvb/video-stop.rst | 2 +- Documentation/media/uapi/dvb/video.rst | 15 +++-- Documentation/media/uapi/dvb/video_h.rst | 9 --- Documentation/media/uapi/gen-errors.rst | 49 +++++--------- include/uapi/linux/dvb/frontend.h | 6 +- 86 files changed, 630 insertions(+), 521 deletions(-) delete mode 100644 Documentation/media/uapi/dvb/audio_h.rst delete mode 100644 Documentation/media/uapi/dvb/ca_h.rst delete mode 100644 Documentation/media/uapi/dvb/dmx_h.rst delete mode 100644 Documentation/media/uapi/dvb/frontend_h.rst create mode 100644 Documentation/media/uapi/dvb/headers.rst delete mode 100644 Documentation/media/uapi/dvb/net_h.rst delete mode 100644 Documentation/media/uapi/dvb/video_h.rst
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2.13.5
PATCH 9/14 media: dvbapi.rst: add an entry to DVB revision history
There are several missing items at the API history. Yet, as we're doing a significant change there, add a new entry.
--- Documentation/media/uapi/dvb/dvbapi.rst | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
Documentation/media/uapi/dvb/dvbapi.rst +6 -1
@@ -66,12 +66,17 @@ Authors: **Copyright** |copy| 2002-2003 : Convergence GmbH -**Copyright** |copy| 2009-2016 : Mauro Carvalho Chehab +**Copyright** |copy| 2009-2017 : Mauro Carvalho Chehab **************** Revision History **************** +:revision: 2.2.0 / 2017-09-01 (*mcc*) + +Most gaps between the uAPI document and the Kernel implementation +got fixed for the non-legacy API. + :revision: 2.1.0 / 2015-05-29 (*mcc*) DocBook improvements and cleanups, in order to document the system calls
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2.13.5
PATCH 11/14 media: dmx-get-pes-pids.rst: document the ioctl
In reply to Mauro Carvalho ChehabThis ioctl is supported by the DVB core, but was never documented.
Add a documentation for it.
--- Documentation/media/uapi/dvb/dmx-get-pes-pids.rst | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-)
Documentation/media/uapi/dvb/dmx-get-pes-pids.rst +20 -2
@@ -25,13 +25,31 @@ Arguments File descriptor returned by :c:func:`open() <dvb-dmx-open>`. ``pids`` - Undocumented. + Array used to store 5 Program IDs. Description ----------- -.. note:: This ioctl is undocumented. Documentation is welcome. +This ioctl allows to query a DVB device to return the first PID used +by audio, video, textext, subtitle and PCR programs on a given service. +They're stored as: + +======================= ======== ======================================= +PID element position content +======================= ======== ======================================= +pids[DMX_PES_AUDIO] 0 first audio PID +pids[DMX_PES_VIDEO] 1 first video PID +pids[DMX_PES_TELETEXT] 2 first teletext PID +pids[DMX_PES_SUBTITLE] 3 first subtitle PID +pids[DMX_PES_PCR] 4 first Program Clock Reference PID +======================= ======== ======================================= + + +.. note:: + + A value equal to 0xffff means that the PID was not filled by the + Kernel. Return Value
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2.13.5
PATCH 13/14 media: intro.rst: don't assume audio and video codecs to be MPEG2
In reply to Mauro Carvalho ChehabOriginally, when DVB was introduced, all codecs would be part of MPEG2 standard. That's not true anymore, as there are a large number of codec standards used on digital TV nowadays.
--- Documentation/media/uapi/dvb/intro.rst | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)
Documentation/media/uapi/dvb/intro.rst +4 -5
@@ -94,11 +94,10 @@ Demultiplexer which filters the incoming Digital TV MPEG-TS stream streams it also contains data streams with information about the programs offered in this or other streams of the same provider. -MPEG2 audio and video decoder - The main targets of the demultiplexer are the MPEG2 audio and video - decoders. After decoding they pass on the uncompressed audio and - video to the computer screen or (through a PAL/NTSC encoder) to a TV - set. +Audio and video decoder + The main targets of the demultiplexer are audio and video + decoders. After decoding, they pass on the uncompressed audio and + video to the computer screen or to a TV set. .. note::
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2.13.5
PATCH 6/14 media: dvb uAPI docs: Prefer use "Digital TV instead of "DVB"
In reply to Mauro Carvalho ChehabThe usage of the term "DVB" at the dvb API docs is confusing, as, right now, it can refer to either the European digital TV standard or to the subsystem.
So, prefer calling it as "Digital TV" on most places, to avoid ambiguity.
--- .../media/uapi/dvb/audio-channel-select.rst | 2 +- Documentation/media/uapi/dvb/audio-fclose.rst | 8 +++---- Documentation/media/uapi/dvb/audio-fopen.rst | 8 +++---- Documentation/media/uapi/dvb/audio-fwrite.rst | 8 +++---- Documentation/media/uapi/dvb/audio-set-av-sync.rst | 2 +- .../media/uapi/dvb/audio-set-bypass-mode.rst | 6 +++--- Documentation/media/uapi/dvb/audio-set-mute.rst | 2 +- Documentation/media/uapi/dvb/audio.rst | 13 +++++------ Documentation/media/uapi/dvb/ca-fclose.rst | 8 +++---- Documentation/media/uapi/dvb/ca-fopen.rst | 10 ++++----- Documentation/media/uapi/dvb/ca.rst | 11 +++++----- Documentation/media/uapi/dvb/demux.rst | 13 +++++++---- Documentation/media/uapi/dvb/dmx-fclose.rst | 8 +++---- Documentation/media/uapi/dvb/dmx-fopen.rst | 10 ++++----- Documentation/media/uapi/dvb/dmx-fread.rst | 8 +++---- Documentation/media/uapi/dvb/dmx-fwrite.rst | 8 +++---- Documentation/media/uapi/dvb/dvbapi.rst | 25 ++++++++++++++++------ Documentation/media/uapi/dvb/dvbproperty.rst | 4 ++-- Documentation/media/uapi/dvb/examples.rst | 4 ++-- .../media/uapi/dvb/fe-diseqc-reset-overload.rst | 2 +- Documentation/media/uapi/dvb/fe-get-info.rst | 5 +++-- Documentation/media/uapi/dvb/fe-get-property.rst | 2 +- Documentation/media/uapi/dvb/fe-read-status.rst | 2 +- .../media/uapi/dvb/fe_property_parameters.rst | 4 ++-- .../dvb/frontend-property-terrestrial-systems.rst | 2 +- Documentation/media/uapi/dvb/frontend.rst | 10 ++++----- Documentation/media/uapi/dvb/frontend_f_close.rst | 6 +++--- Documentation/media/uapi/dvb/frontend_f_open.rst | 6 +++--- .../media/uapi/dvb/frontend_legacy_dvbv3_api.rst | 6 +++--- Documentation/media/uapi/dvb/intro.rst | 18 ++++++++-------- Documentation/media/uapi/dvb/legacy_dvb_apis.rst | 6 +++--- Documentation/media/uapi/dvb/net-add-if.rst | 2 +- Documentation/media/uapi/dvb/net.rst | 13 +++++------ .../media/uapi/dvb/query-dvb-frontend-info.rst | 4 ++-- Documentation/media/uapi/dvb/video-continue.rst | 2 +- Documentation/media/uapi/dvb/video-freeze.rst | 4 ++-- Documentation/media/uapi/dvb/video-get-event.rst | 2 +- Documentation/media/uapi/dvb/video-play.rst | 2 +- .../media/uapi/dvb/video-select-source.rst | 2 +- Documentation/media/uapi/dvb/video-stop.rst | 2 +- Documentation/media/uapi/dvb/video.rst | 15 +++++++------ 41 files changed, 149 insertions(+), 126 deletions(-)
Documentation/media/uapi/dvb/audio-channel-select.rst +1 -1
@@ -44,7 +44,7 @@ Arguments Description ----------- -This ioctl is for DVB devices only. To control a V4L2 decoder use the +This ioctl is for Digital TV devices only. To control a V4L2 decoder use the V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK`` control instead. This ioctl call asks the Audio Device to select the requested channel if
Documentation/media/uapi/dvb/audio-fclose.rst +4 -4
@@ -2,14 +2,14 @@ .. _audio_fclose: -================= -DVB audio close() -================= +======================== +Digital TV audio close() +======================== Name ---- -DVB audio close() +Digital TV audio close() .. attention:: This ioctl is deprecated
Documentation/media/uapi/dvb/audio-fopen.rst +4 -4
@@ -2,14 +2,14 @@ .. _audio_fopen: -================ -DVB audio open() -================ +======================= +Digital TV audio open() +======================= Name ---- -DVB audio open() +Digital TV audio open() .. attention:: This ioctl is deprecated
Documentation/media/uapi/dvb/audio-fwrite.rst +4 -4
@@ -2,14 +2,14 @@ .. _audio_fwrite: -================= -DVB audio write() -================= +========================= +Digital TV audio write() +========================= Name ---- -DVB audio write() +Digital TV audio write() .. attention:: This ioctl is deprecated
Documentation/media/uapi/dvb/audio-set-av-sync.rst +1 -1
@@ -38,7 +38,7 @@ Arguments - boolean state - - Tells the DVB subsystem if A/V synchronization shall be ON or OFF. + - Tells the Digital TV subsystem if A/V synchronization shall be ON or OFF. TRUE: AV-sync ON
Documentation/media/uapi/dvb/audio-set-bypass-mode.rst +3 -3
@@ -38,7 +38,7 @@ Arguments - boolean mode - Enables or disables the decoding of the current Audio stream in - the DVB subsystem. + the Digital TV subsystem. TRUE: Bypass is disabled
@@ -50,8 +50,8 @@ Description This ioctl call asks the Audio Device to bypass the Audio decoder and forward the stream without decoding. This mode shall be used if streams -that can’t be handled by the DVB system shall be decoded. Dolby -DigitalTM streams are automatically forwarded by the DVB subsystem if +that can’t be handled by the Digial TV system shall be decoded. Dolby +DigitalTM streams are automatically forwarded by the Digital TV subsystem if the hardware can handle it.
Documentation/media/uapi/dvb/audio-set-mute.rst +1 -1
@@ -48,7 +48,7 @@ Arguments Description ----------- -This ioctl is for DVB devices only. To control a V4L2 decoder use the +This ioctl is for Digital TV devices only. To control a V4L2 decoder use the V4L2 :ref:`VIDIOC_DECODER_CMD` with the ``V4L2_DEC_CMD_START_MUTE_AUDIO`` flag instead.
Documentation/media/uapi/dvb/audio.rst +7 -6
@@ -2,15 +2,16 @@ .. _dvb_audio: -################ -DVB Audio Device -################ -The DVB audio device controls the MPEG2 audio decoder of the DVB -hardware. It can be accessed through ``/dev/dvb/adapter?/audio?``. Data +####################### +Digital TV Audio Device +####################### + +The Digital TV audio device controls the MPEG2 audio decoder of the Digital +TV hardware. It can be accessed through ``/dev/dvb/adapter?/audio?``. Data types and and ioctl definitions can be accessed by including ``linux/dvb/audio.h`` in your application. -Please note that some DVB cards don’t have their own MPEG decoder, which +Please note that some Digital TV cards don’t have their own MPEG decoder, which results in the omission of the audio and video device. These ioctls were also used by V4L2 to control MPEG decoders implemented
Documentation/media/uapi/dvb/ca-fclose.rst +4 -4
@@ -2,14 +2,14 @@ .. _ca_fclose: -============== -DVB CA close() -============== +===================== +Digital TV CA close() +===================== Name ---- -DVB CA close() +Digital TV CA close() Synopsis
Documentation/media/uapi/dvb/ca-fopen.rst +5 -5
@@ -2,14 +2,14 @@ .. _ca_fopen: -============= -DVB CA open() -============= +==================== +Digital TV CA open() +==================== Name ---- -DVB CA open() +Digital TV CA open() Synopsis
@@ -23,7 +23,7 @@ Arguments --------- ``name`` - Name of specific DVB CA device. + Name of specific Digital TV CA device. ``flags`` A bit-wise OR of the following flags:
Documentation/media/uapi/dvb/ca.rst +6 -5
@@ -2,11 +2,12 @@ .. _dvb_ca: -############# -DVB CA Device -############# -The DVB CA device controls the conditional access hardware. It can be -accessed through ``/dev/dvb/adapter?/ca?``. Data types and and ioctl +#################### +Digital TV CA Device +#################### + +The Digital TV CA device controls the conditional access hardware. It +can be accessed through ``/dev/dvb/adapter?/ca?``. Data types and and ioctl definitions can be accessed by including ``linux/dvb/ca.h`` in your application.
Documentation/media/uapi/dvb/demux.rst +9 -4
@@ -2,10 +2,15 @@ .. _dvb_demux: -################ -DVB Demux Device -################ -The DVB demux device controls the filters of the DVB hardware/software. +####################### +Digital TV Demux Device +####################### + +The Digital TV demux device controls the MPEG-TS filters for the +digital TV. If the driver and hardware supports, those filters are +implemented at the hardware. Otherwise, the Kernel provides a software +emulation. + It can be accessed through ``/dev/adapter?/demux?``. Data types and and ioctl definitions can be accessed by including ``linux/dvb/dmx.h`` in your application.
Documentation/media/uapi/dvb/dmx-fclose.rst +4 -4
@@ -2,14 +2,14 @@ .. _dmx_fclose: -================= -DVB demux close() -================= +======================== +Digital TV demux close() +======================== Name ---- -DVB demux close() +Digital TV demux close() Synopsis
Documentation/media/uapi/dvb/dmx-fopen.rst +5 -5
@@ -2,14 +2,14 @@ .. _dmx_fopen: -================ -DVB demux open() -================ +======================= +Digital TV demux open() +======================= Name ---- -DVB demux open() +Digital TV demux open() Synopsis
@@ -22,7 +22,7 @@ Arguments --------- ``name`` - Name of specific DVB demux device. + Name of specific Digital TV demux device. ``flags`` A bit-wise OR of the following flags:
Documentation/media/uapi/dvb/dmx-fread.rst +4 -4
@@ -2,14 +2,14 @@ .. _dmx_fread: -================ -DVB demux read() -================ +======================= +Digital TV demux read() +======================= Name ---- -DVB demux read() +Digital TV demux read() Synopsis
Documentation/media/uapi/dvb/dmx-fwrite.rst +4 -4
@@ -2,14 +2,14 @@ .. _dmx_fwrite: -================= -DVB demux write() -================= +======================== +Digital TV demux write() +======================== Name ---- -DVB demux write() +Digital TV demux write() Synopsis
Documentation/media/uapi/dvb/dvbapi.rst +19 -6
@@ -10,8 +10,21 @@ Part II - Digital TV API .. note:: - This API is also known as **DVB API**, although it is generic - enough to support all digital TV standards. + This API is also known as Linux **DVB API**. + + It it was originally written to support the European digital TV + standard (DVB), and later extended to support all digital TV standards. + + In order to avoid confusion, within this document, it was opted to refer to + it, and to associated hardware as **Digital TV**. + + The word **DVB** is reserved to be used for: + + - the Digital TV API version + (e. g. DVB API version 3 or DVB API version 5); + - digital TV data types (enums, structs, defines, etc); + - digital TV device nodes (``/dev/dvb/...``); + - the European DVB standard. **Version 5.10**
@@ -41,11 +54,11 @@ Authors: - J. K. Metzler, Ralph <[email protected]> - - Original author of the DVB API documentation. + - Original author of the Digital TV API documentation. - O. C. Metzler, Marcus <[email protected]> - - Original author of the DVB API documentation. + - Original author of the Digital TV API documentation. - Carvalho Chehab, Mauro <[email protected]>
@@ -63,11 +76,11 @@ Revision History DocBook improvements and cleanups, in order to document the system calls on a more standard way and provide more description about the current -DVB API. +Digital TV API. :revision: 2.0.4 / 2011-05-06 (*mcc*) -Add more information about DVB APIv5, better describing the frontend +Add more information about DVBv5 API, better describing the frontend GET/SET props ioctl's.
Documentation/media/uapi/dvb/dvbproperty.rst +2 -2
@@ -13,7 +13,7 @@ antenna subsystem via Satellite Equipment Control - SEC (on satellite systems). The actual parameters are specific to each particular digital TV standards, and may change as the digital TV specs evolves. -In the past (up to DVB API version 3), the strategy used was to have a +In the past (up to DVB API version 3 - DVBv3), the strategy used was to have a union with the parameters needed to tune for DVB-S, DVB-C, DVB-T and ATSC delivery systems grouped there. The problem is that, as the second generation standards appeared, the size of such union was not big
@@ -41,7 +41,7 @@ with supports all digital TV delivery systems. support to new standards and/or new hardware. 3. Nowadays, most frontends support multiple delivery systems. - Only with DVB v5 calls it is possible to switch between + Only with DVB API version 5 calls it is possible to switch between the multiple delivery systems supported by a frontend. 4. DVB API version 5 is also called *S2API*, as the first
Documentation/media/uapi/dvb/examples.rst +2 -2
@@ -6,8 +6,8 @@ Examples ******** -In this section we would like to present some examples for using the DVB -API. +In this section we would like to present some examples for using the Digital +TV API. .. note::
Documentation/media/uapi/dvb/fe-diseqc-reset-overload.rst +1 -1
@@ -31,7 +31,7 @@ Description If the bus has been automatically powered off due to power overload, this ioctl call restores the power to the bus. The call requires read/write access to the device. This call has no effect if the device -is manually powered off. Not all DVB adapters support this ioctl. +is manually powered off. Not all Digital TV adapters support this ioctl. Return Value
Documentation/media/uapi/dvb/fe-get-info.rst +3 -2
@@ -9,7 +9,8 @@ ioctl FE_GET_INFO Name ==== -FE_GET_INFO - Query DVB frontend capabilities and returns information about the - front-end. This call only requires read-only access to the device +FE_GET_INFO - Query Digital TV frontend capabilities and returns information +about the - front-end. This call only requires read-only access to the device. Synopsis
@@ -33,7 +34,7 @@ Arguments Description =========== -All DVB frontend devices support the ``FE_GET_INFO`` ioctl. It is used +All Digital TV frontend devices support the ``FE_GET_INFO`` ioctl. It is used to identify kernel devices compatible with this specification and to obtain information about driver and hardware capabilities. The ioctl takes a pointer to dvb_frontend_info which is filled by the driver.
Documentation/media/uapi/dvb/fe-get-property.rst +1 -1
@@ -35,7 +35,7 @@ Arguments Description =========== -All DVB frontend devices support the ``FE_SET_PROPERTY`` and +All Digital TV frontend devices support the ``FE_SET_PROPERTY`` and ``FE_GET_PROPERTY`` ioctls. The supported properties and statistics depends on the delivery system and on the device:
Documentation/media/uapi/dvb/fe-read-status.rst +1 -1
@@ -33,7 +33,7 @@ Arguments Description =========== -All DVB frontend devices support the ``FE_READ_STATUS`` ioctl. It is +All Digital TV frontend devices support the ``FE_READ_STATUS`` ioctl. It is used to check about the locking status of the frontend after being tuned. The ioctl takes a pointer to an integer where the status will be written.
Documentation/media/uapi/dvb/fe_property_parameters.rst +2 -2
@@ -819,7 +819,7 @@ Possible values are the same as documented on enum DTV_API_VERSION =============== -Returns the major/minor version of the DVB API +Returns the major/minor version of the Digital TV API .. _DTV-CODE-RATE-HP:
@@ -919,7 +919,7 @@ DTV_STREAM_ID Used on DVB-S2, DVB-T2 and ISDB-S. DVB-S2, DVB-T2 and ISDB-S support the transmission of several streams on -a single transport stream. This property enables the DVB driver to +a single transport stream. This property enables the digital TV driver to handle substream filtering, when supported by the hardware. By default, substream filtering is disabled.
Documentation/media/uapi/dvb/frontend-property-terrestrial-systems.rst +1 -1
@@ -100,7 +100,7 @@ to tune any ISDB-T/ISDB-Tsb hardware. Of course it is possible that some very sophisticated devices won't need certain parameters to tune. The information given here should help application writers to know how -to handle ISDB-T and ISDB-Tsb hardware using the Linux DVB-API. +to handle ISDB-T and ISDB-Tsb hardware using the Linux Digital TV API. The details given here about ISDB-T and ISDB-Tsb are just enough to basically show the dependencies between the needed parameter values, but
Documentation/media/uapi/dvb/frontend.rst +5 -5
@@ -2,11 +2,11 @@ .. _dvb_frontend: -################ -DVB Frontend API -################ +####################### +Digital TV Frontend API +####################### -The DVB frontend API was designed to support three groups of delivery +The Digital TV frontend API was designed to support three groups of delivery systems: Terrestrial, cable and Satellite. Currently, the following delivery systems are supported:
@@ -17,7 +17,7 @@ delivery systems are supported: - Satellite systems: DVB-S, DVB-S2, DVB Turbo, ISDB-S, DSS -The DVB frontend controls several sub-devices including: +The Digital TV frontend controls several sub-devices including: - Tuner
Documentation/media/uapi/dvb/frontend_f_close.rst +3 -3
@@ -2,9 +2,9 @@ .. _frontend_f_close: -******************** -DVB frontend close() -******************** +*************************** +Digital TV frontend close() +*************************** Name ====
Documentation/media/uapi/dvb/frontend_f_open.rst +3 -3
@@ -2,9 +2,9 @@ .. _frontend_f_open: -******************* -DVB frontend open() -******************* +*************************** +Digital TV frontend open() +*************************** Name ====
Documentation/media/uapi/dvb/frontend_legacy_dvbv3_api.rst +3 -3
@@ -2,9 +2,9 @@ .. _frontend_legacy_dvbv3_api: -**************************************** -DVB Frontend legacy API (a. k. a. DVBv3) -**************************************** +*********************************************** +Digital TV Frontend legacy API (a. k. a. DVBv3) +*********************************************** The usage of this API is deprecated, as it doesn't support all digital TV standards, doesn't provide good statistics measurements and provides
Documentation/media/uapi/dvb/intro.rst +9 -9
@@ -33,19 +33,19 @@ use ioctl calls. This also includes the knowledge of C or C++. History ======= -The first API for DVB cards we used at Convergence in late 1999 was an +The first API for Digital TV cards we used at Convergence in late 1999 was an extension of the Video4Linux API which was primarily developed for frame -grabber cards. As such it was not really well suited to be used for DVB -cards and their new features like recording MPEG streams and filtering +grabber cards. As such it was not really well suited to be used for Digital +TV cards and their new features like recording MPEG streams and filtering several section and PES data streams at the same time. In early 2000, Convergence was approached by Nokia with a proposal for a new -standard Linux DVB API. As a commitment to the development of terminals +standard Linux Digital TV API. As a commitment to the development of terminals based on open standards, Nokia and Convergence made it available to all Linux developers and published it on https://linuxtv.org in September 2000. With the Linux driver for the Siemens/Hauppauge DVB PCI card, -Convergence provided a first implementation of the Linux DVB API. -Convergence was the maintainer of the Linux DVB API in the early +Convergence provided a first implementation of the Linux Digital TV API. +Convergence was the maintainer of the Linux Digital TV API in the early days. Now, the API is maintained by the LinuxTV community (i.e. you, the reader
@@ -88,7 +88,7 @@ Conditional Access (CA) hardware like CI adapters and smartcard slots Not every digital TV hardware provides conditional access hardware. -Demultiplexer which filters the incoming DVB stream +Demultiplexer which filters the incoming Digital TV MPEG-TS stream The demultiplexer splits the TS into its components like audio and video streams. Besides usually several of such audio and video streams it also contains data streams with information about the
@@ -124,8 +124,8 @@ The Linux Digital TV API lets you control these hardware components through currently six Unix-style character devices for video, audio, frontend, demux, CA and IP-over-DVB networking. The video and audio devices control the MPEG2 decoder hardware, the frontend device the tuner and -the DVB demodulator. The demux device gives you control over the PES and -section filters of the hardware. If the hardware does not support +the Digital TV demodulator. The demux device gives you control over the PES +and section filters of the hardware. If the hardware does not support filtering these filters can be implemented in software. Finally, the CA device controls all the conditional access capabilities of the hardware. It can depend on the individual security requirements of the platform,
Documentation/media/uapi/dvb/legacy_dvb_apis.rst +3 -3
@@ -2,9 +2,9 @@ .. _legacy_dvb_apis: -******************* -DVB Deprecated APIs -******************* +*************************** +Digital TV Deprecated APIs +*************************** The APIs described here are kept only for historical reasons. There's just one driver for a very legacy hardware that uses this API. No modern
Documentation/media/uapi/dvb/net-add-if.rst +1 -1
@@ -64,7 +64,7 @@ filled with the number of the created interface. - ifnum - - number of the DVB interface. + - number of the Digital TV interface. - .. row 4
Documentation/media/uapi/dvb/net.rst +7 -6
@@ -2,10 +2,11 @@ .. _net: -############### -DVB Network API -############### -The DVB net device controls the mapping of data packages that are part +###################### +Digital TV Network API +###################### + +The Digital TV net device controls the mapping of data packages that are part of a transport stream to be mapped into a virtual network interface, visible through the standard Linux network protocol stack.
@@ -28,8 +29,8 @@ header. .. _net_fcalls: -DVB net Function Calls -###################### +Digital TV net Function Calls +############################# .. toctree:: :maxdepth: 1
Documentation/media/uapi/dvb/query-dvb-frontend-info.rst +2 -2
@@ -9,5 +9,5 @@ Querying frontend information Usually, the first thing to do when the frontend is opened is to check the frontend capabilities. This is done using :ref:`FE_GET_INFO`. This ioctl will enumerate the -DVB API version and other characteristics about the frontend, and can be -opened either in read only or read/write mode. +Digital TV API version and other characteristics about the frontend, and can +be opened either in read only or read/write mode.
Documentation/media/uapi/dvb/video-continue.rst +1 -1
@@ -44,7 +44,7 @@ Arguments Description ----------- -This ioctl is for DVB devices only. To control a V4L2 decoder use the +This ioctl is for Digital TV devices only. To control a V4L2 decoder use the V4L2 :ref:`VIDIOC_DECODER_CMD` instead. This ioctl call restarts decoding and playing processes of the video
Documentation/media/uapi/dvb/video-freeze.rst +2 -2
@@ -44,14 +44,14 @@ Arguments Description ----------- -This ioctl is for DVB devices only. To control a V4L2 decoder use the +This ioctl is for Digital TV devices only. To control a V4L2 decoder use the V4L2 :ref:`VIDIOC_DECODER_CMD` instead. This ioctl call suspends the live video stream being played. Decoding and playing are frozen. It is then possible to restart the decoding and playing process of the video stream using the VIDEO_CONTINUE command. If VIDEO_SOURCE_MEMORY is selected in the ioctl call -VIDEO_SELECT_SOURCE, the DVB subsystem will not decode any more data +VIDEO_SELECT_SOURCE, the Digital TV subsystem will not decode any more data until the ioctl call VIDEO_CONTINUE or VIDEO_PLAY is performed.
Documentation/media/uapi/dvb/video-get-event.rst +1 -1
@@ -50,7 +50,7 @@ Arguments Description ----------- -This ioctl is for DVB devices only. To get events from a V4L2 decoder +This ioctl is for Digital TV devices only. To get events from a V4L2 decoder use the V4L2 :ref:`VIDIOC_DQEVENT` ioctl instead. This ioctl call returns an event of type video_event if available. If
Documentation/media/uapi/dvb/video-play.rst +1 -1
@@ -44,7 +44,7 @@ Arguments Description ----------- -This ioctl is for DVB devices only. To control a V4L2 decoder use the +This ioctl is for Digital TV devices only. To control a V4L2 decoder use the V4L2 :ref:`VIDIOC_DECODER_CMD` instead. This ioctl call asks the Video Device to start playing a video stream
Documentation/media/uapi/dvb/video-select-source.rst +1 -1
@@ -50,7 +50,7 @@ Arguments Description ----------- -This ioctl is for DVB devices only. This ioctl was also supported by the +This ioctl is for Digital TV devices only. This ioctl was also supported by the V4L2 ivtv driver, but that has been replaced by the ivtv-specific ``IVTV_IOC_PASSTHROUGH_MODE`` ioctl.
Documentation/media/uapi/dvb/video-stop.rst +1 -1
@@ -60,7 +60,7 @@ Arguments Description ----------- -This ioctl is for DVB devices only. To control a V4L2 decoder use the +This ioctl is for Digital TV devices only. To control a V4L2 decoder use the V4L2 :ref:`VIDIOC_DECODER_CMD` instead. This ioctl call asks the Video Device to stop playing the current
Documentation/media/uapi/dvb/video.rst +8 -7
@@ -2,20 +2,21 @@ .. _dvb_video: -################ -DVB Video Device -################ -The DVB video device controls the MPEG2 video decoder of the DVB -hardware. It can be accessed through **/dev/dvb/adapter0/video0**. Data +####################### +Digital TV Video Device +####################### + +The Digital TV video device controls the MPEG2 video decoder of the Digital +TV hardware. It can be accessed through **/dev/dvb/adapter0/video0**. Data types and and ioctl definitions can be accessed by including **linux/dvb/video.h** in your application. -Note that the DVB video device only controls decoding of the MPEG video +Note that the Digital TV video device only controls decoding of the MPEG video stream, not its presentation on the TV or computer screen. On PCs this is typically handled by an associated video4linux device, e.g. **/dev/video**, which allows scaling and defining output windows. -Some DVB cards don’t have their own MPEG decoder, which results in the +Some Digital TV cards don’t have their own MPEG decoder, which results in the omission of the audio and video device as well as the video4linux device.
Signature · 1 line
2.13.5
PATCH 4/14 media: dvb uAPI docs: adjust return value ioctl descriptions
In reply to Mauro Carvalho ChehabThere are several issues on the return value for ioctls:
- Text is confusing;
- Some error codes don't exist;
- The non-generic error codes should come before the text that points to the generic error codes;
- Tables don't contain column size hints;
- Some references are not marked as such.
Correct them.
--- Documentation/media/uapi/dvb/ca-fclose.rst | 13 ++--- Documentation/media/uapi/dvb/ca-fopen.rst | 32 ++----------- Documentation/media/uapi/dvb/ca-get-cap.rst | 4 +- Documentation/media/uapi/dvb/ca-get-msg.rst | 9 +++- Documentation/media/uapi/dvb/ca-get-slot-info.rst | 10 +++- Documentation/media/uapi/dvb/ca-reset.rst | 8 +++- Documentation/media/uapi/dvb/ca-send-msg.rst | 8 +++- Documentation/media/uapi/dvb/ca-set-descr.rst | 8 +++- Documentation/media/uapi/dvb/dmx-add-pid.rst | 8 +++- Documentation/media/uapi/dvb/dmx-fclose.rst | 13 ++--- Documentation/media/uapi/dvb/dmx-fopen.rst | 33 +++++-------- Documentation/media/uapi/dvb/dmx-fread.rst | 55 +++++++--------------- Documentation/media/uapi/dvb/dmx-fwrite.rst | 29 +++++------- Documentation/media/uapi/dvb/dmx-get-pes-pids.rst | 8 +++- Documentation/media/uapi/dvb/dmx-get-stc.rst | 15 ++++-- Documentation/media/uapi/dvb/dmx-remove-pid.rst | 8 +++- .../media/uapi/dvb/dmx-set-buffer-size.rst | 9 +++- Documentation/media/uapi/dvb/dmx-set-filter.rst | 9 +++- .../media/uapi/dvb/dmx-set-pes-filter.rst | 12 +++-- Documentation/media/uapi/dvb/dmx-start.rst | 15 ++++-- Documentation/media/uapi/dvb/dmx-stop.rst | 8 +++- .../media/uapi/dvb/fe-diseqc-recv-slave-reply.rst | 8 +++- .../media/uapi/dvb/fe-diseqc-reset-overload.rst | 8 +++- .../media/uapi/dvb/fe-diseqc-send-burst.rst | 8 +++- .../media/uapi/dvb/fe-diseqc-send-master-cmd.rst | 8 +++- .../uapi/dvb/fe-dishnetwork-send-legacy-cmd.rst | 8 +++- .../media/uapi/dvb/fe-enable-high-lnb-voltage.rst | 8 +++- Documentation/media/uapi/dvb/fe-get-event.rst | 9 ++-- Documentation/media/uapi/dvb/fe-get-frontend.rst | 10 ++-- Documentation/media/uapi/dvb/fe-get-info.rst | 8 +++- Documentation/media/uapi/dvb/fe-get-property.rst | 8 +++- Documentation/media/uapi/dvb/fe-read-ber.rst | 8 +++- .../media/uapi/dvb/fe-read-signal-strength.rst | 8 +++- Documentation/media/uapi/dvb/fe-read-snr.rst | 8 +++- Documentation/media/uapi/dvb/fe-read-status.rst | 8 +++- .../media/uapi/dvb/fe-read-uncorrected-blocks.rst | 8 +++- .../media/uapi/dvb/fe-set-frontend-tune-mode.rst | 8 +++- Documentation/media/uapi/dvb/fe-set-frontend.rst | 15 ++++-- Documentation/media/uapi/dvb/fe-set-tone.rst | 8 +++- Documentation/media/uapi/dvb/fe-set-voltage.rst | 8 +++- Documentation/media/uapi/dvb/frontend_f_close.rst | 10 ++-- Documentation/media/uapi/dvb/frontend_f_open.rst | 38 +++++++++------ Documentation/media/uapi/dvb/net-add-if.rst | 8 +++- Documentation/media/uapi/dvb/net-get-if.rst | 8 +++- Documentation/media/uapi/dvb/net-remove-if.rst | 8 +++- 45 files changed, 327 insertions(+), 221 deletions(-)
Documentation/media/uapi/dvb/ca-fclose.rst +5 -8
@@ -34,13 +34,10 @@ This system call closes a previously opened CA device. Return Value ------------ -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 +On success 0 is returned. +On error -1 is returned, and the ``errno`` variable is set +appropriately. - - .. row 1 - - - ``EBADF`` - - - fd is not a valid open file descriptor. +Generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/ca-fopen.rst +5 -27
@@ -66,33 +66,11 @@ the device in this mode will fail, and an error code will be returned. Return Value ------------ -.. tabularcolumns:: |p{2.5cm}|p{15.0cm}| -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 +On success 0 is returned. +On error -1 is returned, and the ``errno`` variable is set +appropriately. - - .. row 1 - - - ``ENODEV`` - - - Device driver not loaded/available. - - - .. row 2 - - - ``EINTERNAL`` - - - Internal error. - - - .. row 3 - - - ``EBUSY`` - - - Device or resource busy. - - - .. row 4 - - - ``EINVAL`` - - - Invalid argument. +Generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/ca-get-cap.rst +3 -1
@@ -40,5 +40,7 @@ Return Value On success 0 is returned and :c:type:`ca_caps` is filled. On error, -1 is returned and the ``errno`` variable is set -appropriately. The generic error codes are described at the +appropriately. + +The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/ca-get-msg.rst +7 -2
@@ -49,6 +49,11 @@ Description Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the + +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.
Documentation/media/uapi/dvb/ca-get-slot-info.rst +9 -1
@@ -43,7 +43,15 @@ On success 0 is returned, and :c:type:`ca_slot_info` is filled. On error -1 is returned, and the ``errno`` variable is set appropriately. -If the slot is not available, ``errno`` will contain ``-EINVAL``. +.. tabularcolumns:: |p{2.5cm}|p{15.0cm}| + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 16 + + - - ``ENODEV`` + - the slot is not available. The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/ca-reset.rst +6 -2
@@ -35,6 +35,10 @@ be called before start using the CA hardware. Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/ca-send-msg.rst +6 -2
@@ -38,6 +38,10 @@ Description Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/ca-set-descr.rst +6 -2
@@ -48,6 +48,10 @@ Description Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/dmx-add-pid.rst +6 -2
@@ -40,6 +40,10 @@ DMX_OUT_TSDEMUX_TAP. Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/dmx-fclose.rst +5 -8
@@ -35,13 +35,10 @@ previously allocated via the open() call. Return Value ------------ -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 +On success 0 is returned. +On error, -1 is returned and the ``errno`` variable is set +appropriately. - - .. row 1 - - - ``EBADF`` - - - fd is not a valid open file descriptor. +The generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/dmx-fopen.rst +11 -22
@@ -69,31 +69,20 @@ using the F_SETFL command of the fcntl system call. Return Value ------------ +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +.. tabularcolumns:: |p{2.5cm}|p{15.0cm}| + .. flat-table:: :header-rows: 0 :stub-columns: 0 + :widths: 1 16 - - - .. row 1 - - - ``ENODEV`` - - - Device driver not loaded/available. - - - .. row 2 - - - ``EINVAL`` - - - Invalid argument. - - - .. row 3 - - - ``EMFILE`` - + - - ``EMFILE`` - “Too many open files”, i.e. no more filters available. - - .. row 4 - - - ``ENOMEM`` - - - The driver failed to allocate enough memory. +The generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/dmx-fread.rst +17 -38
71 lines not on this page · raw message
Documentation/media/uapi/dvb/dmx-fwrite.rst +13 -16
@@ -44,32 +44,29 @@ The amount of data to be transferred is implied by count. Return Value ------------ +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + .. tabularcolumns:: |p{2.5cm}|p{15.0cm}| .. flat-table:: :header-rows: 0 :stub-columns: 0 + :widths: 1 16 - - .. row 1 - - - ``EWOULDBLOCK`` - - - No data was written. This might happen if O_NONBLOCK was + - - ``EWOULDBLOCK`` + - No data was written. This might happen if ``O_NONBLOCK`` was specified and there is no more buffer space available (if - O_NONBLOCK is not specified the function will block until buffer + ``O_NONBLOCK`` is not specified the function will block until buffer space is available). - - .. row 2 - - - ``EBUSY`` - + - - ``EBUSY`` - This error code indicates that there are conflicting requests. The corresponding demux device is setup to receive data from the front- end. Make sure that these filters are stopped and that the - filters with input set to DMX_IN_DVR are started. + filters with input set to ``DMX_IN_DVR`` are started. - - .. row 3 - - - ``EBADF`` - - - fd is not a valid open file descriptor. +The generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/dmx-get-pes-pids.rst +6 -2
@@ -37,6 +37,10 @@ Description Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/dmx-get-stc.rst +11 -4
@@ -42,17 +42,24 @@ the real 90kHz STC value is stc->stc / stc->base . Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the -:ref:`Generic Error Codes <gen-errors>` chapter. +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +.. tabularcolumns:: |p{2.5cm}|p{15.0cm}| .. flat-table:: :header-rows: 0 :stub-columns: 0 - + :widths: 1 16 - .. row 1 - ``EINVAL`` - Invalid stc number. + + +The generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/dmx-remove-pid.rst +6 -2
@@ -41,6 +41,10 @@ DMX_SET_PES_FILTER or DMX_ADD_PID. Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/dmx-set-buffer-size.rst +7 -2
@@ -40,6 +40,11 @@ used. Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the + +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/dmx-set-filter.rst +7 -2
@@ -47,6 +47,11 @@ will be canceled, and the receive buffer will be flushed. Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the + +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/dmx-set-pes-filter.rst +9 -3
@@ -42,15 +42,17 @@ capability is supported. Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the -:ref:`Generic Error Codes <gen-errors>` chapter. +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. .. tabularcolumns:: |p{2.5cm}|p{15.0cm}| .. flat-table:: :header-rows: 0 :stub-columns: 0 + :widths: 1 16 - .. row 1
@@ -61,3 +63,7 @@ appropriately. The generic error codes are described at the There are active filters filtering data from another input source. Make sure that these filters are stopped before starting this filter. + + +The generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/dmx-start.rst +10 -5
@@ -29,15 +29,16 @@ Description ----------- This ioctl call is used to start the actual filtering operation defined -via the ioctl calls DMX_SET_FILTER or DMX_SET_PES_FILTER. +via the ioctl calls :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER`. Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the -:ref:`Generic Error Codes <gen-errors>` chapter. +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. .. tabularcolumns:: |p{2.5cm}|p{15.0cm}|
@@ -51,7 +52,7 @@ appropriately. The generic error codes are described at the - ``EINVAL`` - Invalid argument, i.e. no filtering parameters provided via the - DMX_SET_FILTER or DMX_SET_PES_FILTER functions. + :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER` ioctls. - .. row 2
@@ -61,3 +62,7 @@ appropriately. The generic error codes are described at the There are active filters filtering data from another input source. Make sure that these filters are stopped before starting this filter. + + +The generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/dmx-stop.rst +6 -2
@@ -36,6 +36,10 @@ started via the DMX_START command. Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/fe-diseqc-recv-slave-reply.rst +6 -2
@@ -39,6 +39,10 @@ The received message is stored at the buffer pointed by ``argp``. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-diseqc-reset-overload.rst +6 -2
@@ -37,6 +37,10 @@ is manually powered off. Not all DVB adapters support this ioctl. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-diseqc-send-burst.rst +6 -2
@@ -43,6 +43,10 @@ It provides support for what's specified at Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-diseqc-send-master-cmd.rst +6 -2
@@ -38,7 +38,11 @@ Sends the DiSEqC command pointed by ``argp`` to the antenna subsystem. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-dishnetwork-send-legacy-cmd.rst +6 -2
@@ -46,6 +46,10 @@ dishes were already legacy in 2004. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-enable-high-lnb-voltage.rst +6 -2
@@ -45,6 +45,10 @@ voltages. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-get-event.rst +6 -3
@@ -44,10 +44,10 @@ an event becomes available. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the -:ref:`Generic Error Codes <gen-errors>` chapter. +On success 0 is returned. +On error -1 is returned, and the ``errno`` variable is set +appropriately. .. flat-table::
@@ -66,3 +66,6 @@ appropriately. The generic error codes are described at the - ``EOVERFLOW`` - Overflow in event queue - one or more events were lost. + +Generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/fe-get-frontend.rst +6 -4
@@ -42,11 +42,10 @@ this command, read-only access to the device is sufficient. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the -:ref:`Generic Error Codes <gen-errors>` chapter. - +On success 0 is returned. +On error -1 is returned, and the ``errno`` variable is set +appropriately. .. flat-table:: :header-rows: 0
@@ -58,3 +57,6 @@ appropriately. The generic error codes are described at the - ``EINVAL`` - Maximum supported symbol rate reached. + +Generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/fe-get-info.rst +6 -2
@@ -53,6 +53,10 @@ The frontend capabilities are described at :c:type:`fe_caps`. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-get-property.rst +6 -2
@@ -64,6 +64,10 @@ depends on the delivery system and on the device: Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-read-ber.rst +6 -2
@@ -41,6 +41,10 @@ access to the device is sufficient. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-read-signal-strength.rst +6 -2
@@ -41,6 +41,10 @@ to the device is sufficient. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-read-snr.rst +6 -2
@@ -41,6 +41,10 @@ to the device is sufficient. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-read-status.rst +6 -2
@@ -56,6 +56,10 @@ state changes of the frontend hardware. It is produced using the enum Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-read-uncorrected-blocks.rst +6 -2
@@ -43,6 +43,10 @@ sufficient. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-set-frontend-tune-mode.rst +6 -2
@@ -48,6 +48,10 @@ FE_TUNE_MODE_ONESHOT mode Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-set-frontend.rst +11 -4
@@ -48,17 +48,24 @@ requires read/write access to the device. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the -:ref:`Generic Error Codes <gen-errors>` chapter. +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +.. tabularcolumns:: |p{2.5cm}|p{15.0cm}| .. flat-table:: :header-rows: 0 :stub-columns: 0 - + :widths: 1 16 - .. row 1 - ``EINVAL`` - Maximum supported symbol rate reached. + + +Generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/fe-set-tone.rst +6 -2
@@ -49,6 +49,10 @@ this is done using the DiSEqC ioctls. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/fe-set-voltage.rst +6 -2
@@ -53,6 +53,10 @@ power up the LNBf. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +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.
Documentation/media/uapi/dvb/frontend_f_close.rst +6 -4
@@ -41,8 +41,10 @@ down automatically. Return Value ============ -The function returns 0 on success, -1 on failure and the ``errno`` is -set appropriately. Possible error codes: +On success 0 is returned. -EBADF - ``fd`` is not a valid open file descriptor. +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.
Documentation/media/uapi/dvb/frontend_f_open.rst +23 -15
@@ -79,24 +79,32 @@ On error, -1 is returned, and the ``errno`` variable is set appropriately. Possible error codes are: -EACCES - The caller has no permission to access the device. -EBUSY - The the device driver is already in use. +On success 0 is returned, and :c:type:`ca_slot_info` is filled. -ENXIO - No device corresponding to this device special file exists. +On error -1 is returned, and the ``errno`` variable is set +appropriately. -ENOMEM - Not enough kernel memory was available to complete the request. +.. tabularcolumns:: |p{2.5cm}|p{15.0cm}| -EMFILE - The process already has the maximum number of files open. +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 16 -ENFILE - The limit on the total number of files open on the system has been - reached. + - - ``EPERM`` + - The caller has no permission to access the device. -ENODEV - The device got removed. + - - ``EBUSY`` + - The the device driver is already in use. + + - - ``EMFILE`` + - The process already has the maximum number of files open. + + - - ``ENFILE`` + - The limit on the total number of files open on the system has been + reached. + + +The generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/net-add-if.rst +6 -2
@@ -78,6 +78,10 @@ filled with the number of the created interface. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +On success 0 is returned, and :c:type:`ca_slot_info` is filled. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/net-get-if.rst +6 -2
@@ -43,6 +43,10 @@ the ``errno`` with ``EINVAL`` error code. Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +On success 0 is returned, and :c:type:`ca_slot_info` is filled. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.
Documentation/media/uapi/dvb/net-remove-if.rst +6 -2
@@ -39,6 +39,10 @@ The NET_REMOVE_IF ioctl deletes an interface previously created via Return Value ============ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +On success 0 is returned, and :c:type:`ca_slot_info` is filled. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.
Signature · 1 line
2.13.5
PATCH 10/14 media: dvb uAPI docs: minor editorial changes
In reply to Mauro Carvalho ChehabDo minor editorial changes to improve documentation readability:
- mark literals as such;
- add table markups to hint sizes;
- define what PES means;
- instead of hardcoding devnode numbers to zero (like adapter0/) use a question mark, to indicate that multiple devnodes may exist;
- add cross-references where useful.
--- Documentation/media/uapi/dvb/ca-fopen.rst | 25 +++++++++++----------- Documentation/media/uapi/dvb/dmx-add-pid.rst | 4 ++-- Documentation/media/uapi/dvb/dmx-fclose.rst | 5 +++-- Documentation/media/uapi/dvb/dmx-fopen.rst | 23 +++++++++++--------- Documentation/media/uapi/dvb/dmx-fread.rst | 8 +++---- Documentation/media/uapi/dvb/dmx-fwrite.rst | 4 ++-- Documentation/media/uapi/dvb/dmx-get-stc.rst | 13 +++++------ Documentation/media/uapi/dvb/dmx-remove-pid.rst | 4 ++-- .../media/uapi/dvb/dmx-set-buffer-size.rst | 2 +- Documentation/media/uapi/dvb/dmx-set-filter.rst | 4 ++-- Documentation/media/uapi/dvb/dmx-stop.rst | 4 ++-- .../media/uapi/dvb/dvb-fe-read-status.rst | 2 +- .../media/uapi/dvb/fe-diseqc-send-master-cmd.rst | 3 ++- Documentation/media/uapi/dvb/fe-get-info.rst | 4 ++-- .../media/uapi/dvb/fe-set-frontend-tune-mode.rst | 4 ++-- Documentation/media/uapi/dvb/fe-type-t.rst | 2 +- 16 files changed, 59 insertions(+), 52 deletions(-)
Documentation/media/uapi/dvb/ca-fopen.rst +13 -12
@@ -28,20 +28,20 @@ Arguments ``flags`` A bit-wise OR of the following flags: +.. tabularcolumns:: |p{2.5cm}|p{15.0cm}| + .. flat-table:: :header-rows: 0 :stub-columns: 0 + :widths: 1 16 - - - - O_RDONLY + - - ``O_RDONLY`` - read-only access - - - - O_RDWR + - - ``O_RDWR`` - read/write access - - - - O_NONBLOCK + - - ``O_NONBLOCK`` - open in non-blocking mode (blocking mode is the default)
@@ -52,15 +52,16 @@ Description This system call opens a named ca device (e.g. ``/dev/dvb/adapter?/ca?``) for subsequent use. -When an open() call has succeeded, the device will be ready for use. The +When an ``open()`` call has succeeded, the device will be ready for use. The significance of blocking or non-blocking mode is described in the documentation for functions where there is a difference. It does not -affect the semantics of the open() call itself. A device opened in +affect the semantics of the ``open()`` call itself. A device opened in blocking mode can later be put into non-blocking mode (and vice versa) -using the F_SETFL command of the fcntl system call. This is a standard -system call, documented in the Linux manual page for fcntl. Only one -user can open the CA Device in O_RDWR mode. All other attempts to open -the device in this mode will fail, and an error code will be returned. +using the ``F_SETFL`` command of the ``fcntl`` system call. This is a +standard system call, documented in the Linux manual page for fcntl. +Only one user can open the CA Device in ``O_RDWR`` mode. All other +attempts to open the device in this mode will fail, and an error code +will be returned. Return Value
Documentation/media/uapi/dvb/dmx-add-pid.rst +2 -2
@@ -33,8 +33,8 @@ Description ----------- This ioctl call allows to add multiple PIDs to a transport stream filter -previously set up with DMX_SET_PES_FILTER and output equal to -DMX_OUT_TSDEMUX_TAP. +previously set up with :ref:`DMX_SET_PES_FILTER` and output equal to +:c:type:`DMX_OUT_TSDEMUX_TAP <dmx_output>`. Return Value
Documentation/media/uapi/dvb/dmx-fclose.rst +3 -2
@@ -23,13 +23,14 @@ Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <dvb-ca-open>`. + File descriptor returned by a previous call to + :c:func:`open() <dvb-dmx-open>`. Description ----------- This system call deactivates and deallocates a filter that was -previously allocated via the open() call. +previously allocated via the :c:func:`open() <dvb-dmx-open>` call. Return Value
Documentation/media/uapi/dvb/dmx-fopen.rst +13 -10
@@ -27,20 +27,23 @@ Arguments ``flags`` A bit-wise OR of the following flags: +.. tabularcolumns:: |p{2.5cm}|p{15.0cm}| + .. flat-table:: :header-rows: 0 :stub-columns: 0 + :widths: 1 16 - - - O_RDONLY + - ``O_RDONLY`` - read-only access - - - O_RDWR + - ``O_RDWR`` - read/write access - - - O_NONBLOCK + - ``O_NONBLOCK`` - open in non-blocking mode (blocking mode is the default)
@@ -48,22 +51,22 @@ Arguments Description ----------- -This system call, used with a device name of /dev/dvb/adapter0/demux0, +This system call, used with a device name of ``/dev/dvb/adapter?/demux?``, allocates a new filter and returns a handle which can be used for subsequent control of that filter. This call has to be made for each filter to be used, i.e. every returned file descriptor is a reference to -a single filter. /dev/dvb/adapter0/dvr0 is a logical device to be used +a single filter. ``/dev/dvb/adapter?/dvr?`` is a logical device to be used for retrieving Transport Streams for digital video recording. When reading from this device a transport stream containing the packets from all PES filters set in the corresponding demux device -(/dev/dvb/adapter0/demux0) having the output set to DMX_OUT_TS_TAP. A -recorded Transport Stream is replayed by writing to this device. +(``/dev/dvb/adapter?/demux?``) having the output set to ``DMX_OUT_TS_TAP``. +A recorded Transport Stream is replayed by writing to this device. The significance of blocking or non-blocking mode is described in the documentation for functions where there is a difference. It does not -affect the semantics of the open() call itself. A device opened in -blocking mode can later be put into non-blocking mode (and vice versa) -using the F_SETFL command of the fcntl system call. +affect the semantics of the ``open()`` call itself. A device opened +in blocking mode can later be put into non-blocking mode (and vice versa) +using the ``F_SETFL`` command of the fcntl system call. Return Value
Documentation/media/uapi/dvb/dmx-fread.rst +4 -4
@@ -33,10 +33,10 @@ Arguments Description ----------- -This system call returns filtered data, which might be section or PES -data. The filtered data is transferred from the driver’s internal -circular buffer to buf. The maximum amount of data to be transferred is -implied by count. +This system call returns filtered data, which might be section or Packetized +Elementary Stream (PES) data. The filtered data is transferred from +the driver’s internal circular buffer to ``buf``. The maximum amount of data +to be transferred is implied by count. .. note::
Documentation/media/uapi/dvb/dmx-fwrite.rst +2 -2
@@ -34,10 +34,10 @@ Description ----------- This system call is only provided by the logical device -/dev/dvb/adapter0/dvr0, associated with the physical demux device that +``/dev/dvb/adapter?/dvr?``, associated with the physical demux device that provides the actual DVR functionality. It is used for replay of a digitally recorded Transport Stream. Matching filters have to be defined -in the corresponding physical demux device, /dev/dvb/adapter0/demux0. +in the corresponding physical demux device, ``/dev/dvb/adapter?/demux?``. The amount of data to be transferred is implied by count.
Documentation/media/uapi/dvb/dmx-get-stc.rst +7 -6
@@ -25,18 +25,19 @@ Arguments File descriptor returned by :c:func:`open() <dvb-dmx-open>`. ``stc`` - Pointer to the location where the stc is to be stored. + Pointer to :c:type:`dmx_stc` where the stc data is to be stored. Description ----------- This ioctl call returns the current value of the system time counter -(which is driven by a PES filter of type DMX_PES_PCR). Some hardware -supports more than one STC, so you must specify which one by setting the -num field of stc before the ioctl (range 0...n). The result is returned -in form of a ratio with a 64 bit numerator and a 32 bit denominator, so -the real 90kHz STC value is stc->stc / stc->base . +(which is driven by a PES filter of type :c:type:`DMX_PES_PCR <dmx_ts_pes>`). +Some hardware supports more than one STC, so you must specify which one by +setting the :c:type:`num <dmx_stc>` field of stc before the ioctl (range 0...n). +The result is returned in form of a ratio with a 64 bit numerator +and a 32 bit denominator, so the real 90kHz STC value is +``stc->stc / stc->base``. Return Value
Documentation/media/uapi/dvb/dmx-remove-pid.rst +2 -2
@@ -34,8 +34,8 @@ Description This ioctl call allows to remove a PID when multiple PIDs are set on a transport stream filter, e. g. a filter previously set up with output -equal to DMX_OUT_TSDEMUX_TAP, created via either -DMX_SET_PES_FILTER or DMX_ADD_PID. +equal to :c:type:`DMX_OUT_TSDEMUX_TAP <dmx_output>`, created via either +:ref:`DMX_SET_PES_FILTER` or :ref:`DMX_ADD_PID`. Return Value
Documentation/media/uapi/dvb/dmx-set-buffer-size.rst +1 -1
@@ -33,7 +33,7 @@ Description This ioctl call is used to set the size of the circular buffer used for filtered data. The default size is two maximum sized sections, i.e. if -this function is not called a buffer size of 2 \* 4096 bytes will be +this function is not called a buffer size of ``2 * 4096`` bytes will be used.
Documentation/media/uapi/dvb/dmx-set-filter.rst +2 -2
@@ -40,8 +40,8 @@ state whether a section should be CRC-checked, whether the filter should be a ”one-shot” filter, i.e. if the filtering operation should be stopped after the first section is received, and whether the filtering operation should be started immediately (without waiting for a -DMX_START ioctl call). If a filter was previously set-up, this filter -will be canceled, and the receive buffer will be flushed. +:ref:`DMX_START` ioctl call). If a filter was previously set-up, this +filter will be canceled, and the receive buffer will be flushed. Return Value
Documentation/media/uapi/dvb/dmx-stop.rst +2 -2
@@ -29,8 +29,8 @@ Description ----------- This ioctl call is used to stop the actual filtering operation defined -via the ioctl calls DMX_SET_FILTER or DMX_SET_PES_FILTER and -started via the DMX_START command. +via the ioctl calls :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER` and +started via the :ref:`DMX_START` command. Return Value
Documentation/media/uapi/dvb/dvb-fe-read-status.rst +1 -1
@@ -20,6 +20,6 @@ Signal statistics are provided via .. note:: Most statistics require the demodulator to be fully locked - (e. g. with FE_HAS_LOCK bit set). See + (e. g. with :c:type:`FE_HAS_LOCK <fe_status>` bit set). See :ref:`Frontend statistics indicators <frontend-stat-properties>` for more details.
Documentation/media/uapi/dvb/fe-diseqc-send-master-cmd.rst +2 -1
@@ -33,7 +33,8 @@ Arguments Description =========== -Sends the DiSEqC command pointed by ``argp`` to the antenna subsystem. +Sends the DiSEqC command pointed by :c:type:`dvb_diseqc_master_cmd` +to the antenna subsystem. Return Value ============
Documentation/media/uapi/dvb/fe-get-info.rst +2 -2
@@ -34,8 +34,8 @@ Arguments Description =========== -All Digital TV frontend devices support the ``FE_GET_INFO`` ioctl. It is used -to identify kernel devices compatible with this specification and to +All Digital TV frontend devices support the :ref:`FE_GET_INFO` ioctl. It is +used to identify kernel devices compatible with this specification and to obtain information about driver and hardware capabilities. The ioctl takes a pointer to dvb_frontend_info which is filled by the driver. When the driver is not compatible with this specification the ioctl
Documentation/media/uapi/dvb/fe-set-frontend-tune-mode.rst +2 -2
@@ -30,7 +30,7 @@ Arguments - 0 - normal tune mode - - FE_TUNE_MODE_ONESHOT - When set, this flag will disable any + - ``FE_TUNE_MODE_ONESHOT`` - When set, this flag will disable any zigzagging or other "normal" tuning behaviour. Additionally, there will be no automatic monitoring of the lock status, and hence no frontend events will be generated. If a frontend device
@@ -42,7 +42,7 @@ Description =========== Allow setting tuner mode flags to the frontend, between 0 (normal) or -FE_TUNE_MODE_ONESHOT mode +``FE_TUNE_MODE_ONESHOT`` mode Return Value
Documentation/media/uapi/dvb/fe-type-t.rst +1 -1
@@ -78,7 +78,7 @@ parameter. In the old days, struct :c:type:`dvb_frontend_info` used to contain ``fe_type_t`` field to indicate the delivery systems, -filled with either FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC. While this +filled with either ``FE_QPSK, FE_QAM, FE_OFDM`` or ``FE_ATSC``. While this is still filled to keep backward compatibility, the usage of this field is deprecated, as it can report just one delivery system, but some devices support multiple delivery systems. Please use
Signature · 1 line
2.13.5
PATCH 2/14 media: gen-errors.rst: remove row number comments
In reply to Mauro Carvalho ChehabThose are introduced by the conversion scripts and don't really help. Get rid of them.
--- Documentation/media/uapi/gen-errors.rst | 44 +++++++++------------------------ 1 file changed, 11 insertions(+), 33 deletions(-)
Documentation/media/uapi/gen-errors.rst +11 -33
@@ -17,9 +17,7 @@ Generic Error Codes :widths: 1 16 - - .. row 1 - - - ``EAGAIN`` (aka ``EWOULDBLOCK``) + - - ``EAGAIN`` (aka ``EWOULDBLOCK``) - The ioctl can't be handled because the device is in state where it can't perform it. This could happen for example in case where
@@ -27,15 +25,11 @@ Generic Error Codes is also returned when the ioctl would need to wait for an event, but the device was opened in non-blocking mode. - - .. row 2 - - - ``EBADF`` + - - ``EBADF`` - The file descriptor is not a valid. - - .. row 3 - - - ``EBUSY`` + - - ``EBUSY`` - The ioctl can't be handled because the device is busy. This is typically return while device is streaming, and an ioctl tried to
@@ -44,59 +38,43 @@ Generic Error Codes ioctl must not be retried without performing another action to fix the problem first (typically: stop the stream before retrying). - - .. row 4 - - - ``EFAULT`` + - - ``EFAULT`` - There was a failure while copying data from/to userspace, probably caused by an invalid pointer reference. - - .. row 5 - - - ``EINVAL`` + - - ``EINVAL`` - One or more of the ioctl parameters are invalid or out of the allowed range. This is a widely used error code. See the individual ioctl requests for specific causes. - - .. row 6 - - - ``ENODEV`` + - - ``ENODEV`` - Device not found or was removed. - - .. row 7 - - - ``ENOMEM`` + - - ``ENOMEM`` - There's not enough memory to handle the desired operation. - - .. row 8 - - - ``ENOTTY`` + - - ``ENOTTY`` - The ioctl is not supported by the driver, actually meaning that the required functionality is not available, or the file descriptor is not for a media device. - - .. row 9 - - - ``ENOSPC`` + - - ``ENOSPC`` - On USB devices, the stream ioctl's can return this error, meaning that this request would overcommit the usb bandwidth reserved for periodic transfers (up to 80% of the USB bandwidth). - - .. row 10 - - - ``EPERM`` + - - ``EPERM`` - Permission denied. Can be returned if the device needs write permission, or some special capabilities is needed (e. g. root) - - .. row 11 - - - ``EIO`` + - - ``EIO`` - I/O error. Typically used when there are problems communicating with a hardware device. This could indicate broken or flaky hardware.
Signature · 1 line
2.13.5
PATCH 3/14 media: gen-errors.rst: document ENXIO error code
In reply to Mauro Carvalho ChehabThis error can be produced at least at the DVB subsystem.
As it is generic enough, document it.
--- Documentation/media/uapi/gen-errors.rst | 5 +++++ 1 file changed, 5 insertions(+)
Documentation/media/uapi/gen-errors.rst +5 -0
@@ -80,6 +80,11 @@ Generic Error Codes a hardware device. This could indicate broken or flaky hardware. It's a 'Something is wrong, I give up!' type of error. + - - ``ENXIO`` + + - No device corresponding to this device special file exists. + + .. note:: #. This list is not exhaustive; ioctls may return other error codes.
Signature · 1 line
2.13.5
PATCH 12/14 media: dvbstb.svg: use dots for the optional parts of the hardware
In reply to Mauro Carvalho ChehabThe hardware description mentions that some parts are optional. Make it clearer at the drawing.
--- Documentation/media/uapi/dvb/dvbstb.svg | 31 +++++++++++++++---------------- 1 file changed, 15 insertions(+), 16 deletions(-)
Documentation/media/uapi/dvb/dvbstb.svg +15 -16
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Signature · 1 line
2.13.5
PATCH 7/14 media: dmx-fread.rst: specify how DMX_CHECK_CRC works
In reply to Mauro Carvalho ChehabIn the past, the documentation used to say that, if a CRC error was found, a "-ECRC" error would be returned. That's not true:
the DVB core will just silently ignore such errors.
So, add an explicit note about that.
--- Documentation/media/uapi/dvb/dmx-fread.rst | 7 +++++++ 1 file changed, 7 insertions(+)
Documentation/media/uapi/dvb/dmx-fread.rst +7 -0
@@ -38,6 +38,13 @@ data. The filtered data is transferred from the driver’s internal circular buffer to buf. The maximum amount of data to be transferred is implied by count. +.. note:: + + if a section filter created with + :c:type:`DMX_CHECK_CRC <dmx_sct_filter_params>` flag set, + data that fails on CRC check will be silently ignored. + + Return Value ------------
Signature · 1 line
2.13.5