diff options
Diffstat (limited to 'Documentation/DocBook')
| -rw-r--r-- | Documentation/DocBook/Makefile | 38 | ||||
| -rw-r--r-- | Documentation/DocBook/media-entities.tmpl | 18 | ||||
| -rw-r--r-- | Documentation/DocBook/media-indices.tmpl | 4 | ||||
| -rw-r--r-- | Documentation/DocBook/procfs-guide.tmpl | 626 | ||||
| -rw-r--r-- | Documentation/DocBook/procfs_example.c | 201 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/common.xml | 35 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/compat.xml | 16 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/v4l2.xml | 26 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/videodev2.h.xml | 116 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/vidioc-enum-dv-presets.xml | 238 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/vidioc-enuminput.xml | 36 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/vidioc-enumoutput.xml | 36 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/vidioc-g-dv-preset.xml | 111 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/vidioc-g-dv-timings.xml | 224 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/vidioc-g-std.xml | 6 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/vidioc-query-dv-preset.xml | 85 | ||||
| -rw-r--r-- | Documentation/DocBook/v4l/vidioc-querystd.xml | 6 |
17 files changed, 965 insertions, 857 deletions
diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile index ab8300f6718..325cfd1d6d9 100644 --- a/Documentation/DocBook/Makefile +++ b/Documentation/DocBook/Makefile @@ -8,7 +8,7 @@ DOCBOOKS := z8530book.xml mcabook.xml device-drivers.xml \ kernel-hacking.xml kernel-locking.xml deviceiobook.xml \ - procfs-guide.xml writing_usb_driver.xml networking.xml \ + writing_usb_driver.xml networking.xml \ kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \ gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \ genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \ @@ -32,10 +32,10 @@ PS_METHOD = $(prefer-db2x) ### # The targets that may be used. -PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs media +PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs xmldoclinks BOOKS := $(addprefix $(obj)/,$(DOCBOOKS)) -xmldocs: $(BOOKS) +xmldocs: $(BOOKS) xmldoclinks sgmldocs: xmldocs PS := $(patsubst %.xml, %.ps, $(BOOKS)) @@ -45,15 +45,24 @@ PDF := $(patsubst %.xml, %.pdf, $(BOOKS)) pdfdocs: $(PDF) HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS))) -htmldocs: media $(HTML) +htmldocs: $(HTML) $(call build_main_index) + $(call build_images) MAN := $(patsubst %.xml, %.9, $(BOOKS)) mandocs: $(MAN) -media: - mkdir -p $(srctree)/Documentation/DocBook/media/ - cp $(srctree)/Documentation/DocBook/dvb/*.png $(srctree)/Documentation/DocBook/v4l/*.gif $(srctree)/Documentation/DocBook/media/ +build_images = mkdir -p $(objtree)/Documentation/DocBook/media/ && \ + cp $(srctree)/Documentation/DocBook/dvb/*.png $(srctree)/Documentation/DocBook/v4l/*.gif $(objtree)/Documentation/DocBook/media/ + +xmldoclinks: +ifneq ($(objtree),$(srctree)) + for dep in dvb media-entities.tmpl media-indices.tmpl v4l; do \ + rm -f $(objtree)/Documentation/DocBook/$$dep \ + && ln -s $(srctree)/Documentation/DocBook/$$dep $(objtree)/Documentation/DocBook/ \ + || exit; \ + done +endif installmandocs: mandocs mkdir -p /usr/local/man/man9/ @@ -65,7 +74,7 @@ KERNELDOC = $(srctree)/scripts/kernel-doc DOCPROC = $(objtree)/scripts/basic/docproc XMLTOFLAGS = -m $(srctree)/Documentation/DocBook/stylesheet.xsl -#XMLTOFLAGS += --skip-validation +XMLTOFLAGS += --skip-validation ### # DOCPROC is used for two purposes: @@ -101,17 +110,6 @@ endif # Changes in kernel-doc force a rebuild of all documentation $(BOOKS): $(KERNELDOC) -### -# procfs guide uses a .c file as example code. -# This requires an explicit dependency -C-procfs-example = procfs_example.xml -C-procfs-example2 = $(addprefix $(obj)/,$(C-procfs-example)) -$(obj)/procfs-guide.xml: $(C-procfs-example2) - -# List of programs to build -##oops, this is a kernel module::hostprogs-y := procfs_example -obj-m += procfs_example.o - # Tell kbuild to always build the programs always := $(hostprogs-y) @@ -238,7 +236,7 @@ clean-files := $(DOCBOOKS) \ $(patsubst %.xml, %.pdf, $(DOCBOOKS)) \ $(patsubst %.xml, %.html, $(DOCBOOKS)) \ $(patsubst %.xml, %.9, $(DOCBOOKS)) \ - $(C-procfs-example) $(index) + $(index) clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man diff --git a/Documentation/DocBook/media-entities.tmpl b/Documentation/DocBook/media-entities.tmpl index bb5ab741220..c725cb852c5 100644 --- a/Documentation/DocBook/media-entities.tmpl +++ b/Documentation/DocBook/media-entities.tmpl @@ -23,6 +23,7 @@ <!ENTITY VIDIOC-ENUMINPUT "<link linkend='vidioc-enuminput'><constant>VIDIOC_ENUMINPUT</constant></link>"> <!ENTITY VIDIOC-ENUMOUTPUT "<link linkend='vidioc-enumoutput'><constant>VIDIOC_ENUMOUTPUT</constant></link>"> <!ENTITY VIDIOC-ENUMSTD "<link linkend='vidioc-enumstd'><constant>VIDIOC_ENUMSTD</constant></link>"> +<!ENTITY VIDIOC-ENUM-DV-PRESETS "<link linkend='vidioc-enum-dv-presets'><constant>VIDIOC_ENUM_DV_PRESETS</constant></link>"> <!ENTITY VIDIOC-ENUM-FMT "<link linkend='vidioc-enum-fmt'><constant>VIDIOC_ENUM_FMT</constant></link>"> <!ENTITY VIDIOC-ENUM-FRAMEINTERVALS "<link linkend='vidioc-enum-frameintervals'><constant>VIDIOC_ENUM_FRAMEINTERVALS</constant></link>"> <!ENTITY VIDIOC-ENUM-FRAMESIZES "<link linkend='vidioc-enum-framesizes'><constant>VIDIOC_ENUM_FRAMESIZES</constant></link>"> @@ -30,6 +31,8 @@ <!ENTITY VIDIOC-G-AUDOUT "<link linkend='vidioc-g-audioout'><constant>VIDIOC_G_AUDOUT</constant></link>"> <!ENTITY VIDIOC-G-CROP "<link linkend='vidioc-g-crop'><constant>VIDIOC_G_CROP</constant></link>"> <!ENTITY VIDIOC-G-CTRL "<link linkend='vidioc-g-ctrl'><constant>VIDIOC_G_CTRL</constant></link>"> +<!ENTITY VIDIOC-G-DV-PRESET "<link linkend='vidioc-g-dv-preset'><constant>VIDIOC_G_DV_PRESET</constant></link>"> +<!ENTITY VIDIOC-G-DV-TIMINGS "<link linkend='vidioc-g-dv-timings'><constant>VIDIOC_G_DV_TIMINGS</constant></link>"> <!ENTITY VIDIOC-G-ENC-INDEX "<link linkend='vidioc-g-enc-index'><constant>VIDIOC_G_ENC_INDEX</constant></link>"> <!ENTITY VIDIOC-G-EXT-CTRLS "<link linkend='vidioc-g-ext-ctrls'><constant>VIDIOC_G_EXT_CTRLS</constant></link>"> <!ENTITY VIDIOC-G-FBUF "<link linkend='vidioc-g-fbuf'><constant>VIDIOC_G_FBUF</constant></link>"> @@ -53,6 +56,7 @@ <!ENTITY VIDIOC-QUERYCTRL "<link linkend='vidioc-queryctrl'><constant>VIDIOC_QUERYCTRL</constant></link>"> <!ENTITY VIDIOC-QUERYMENU "<link linkend='vidioc-queryctrl'><constant>VIDIOC_QUERYMENU</constant></link>"> <!ENTITY VIDIOC-QUERYSTD "<link linkend='vidioc-querystd'><constant>VIDIOC_QUERYSTD</constant></link>"> +<!ENTITY VIDIOC-QUERY-DV-PRESET "<link linkend='vidioc-query-dv-preset'><constant>VIDIOC_QUERY_DV_PRESET</constant></link>"> <!ENTITY VIDIOC-REQBUFS "<link linkend='vidioc-reqbufs'><constant>VIDIOC_REQBUFS</constant></link>"> <!ENTITY VIDIOC-STREAMOFF "<link linkend='vidioc-streamon'><constant>VIDIOC_STREAMOFF</constant></link>"> <!ENTITY VIDIOC-STREAMON "<link linkend='vidioc-streamon'><constant>VIDIOC_STREAMON</constant></link>"> @@ -60,6 +64,8 @@ <!ENTITY VIDIOC-S-AUDOUT "<link linkend='vidioc-g-audioout'><constant>VIDIOC_S_AUDOUT</constant></link>"> <!ENTITY VIDIOC-S-CROP "<link linkend='vidioc-g-crop'><constant>VIDIOC_S_CROP</constant></link>"> <!ENTITY VIDIOC-S-CTRL "<link linkend='vidioc-g-ctrl'><constant>VIDIOC_S_CTRL</constant></link>"> +<!ENTITY VIDIOC-S-DV-PRESET "<link linkend='vidioc-g-dv-preset'><constant>VIDIOC_S_DV_PRESET</constant></link>"> +<!ENTITY VIDIOC-S-DV-TIMINGS "<link linkend='vidioc-g-dv-timings'><constant>VIDIOC_S_DV_TIMINGS</constant></link>"> <!ENTITY VIDIOC-S-EXT-CTRLS "<link linkend='vidioc-g-ext-ctrls'><constant>VIDIOC_S_EXT_CTRLS</constant></link>"> <!ENTITY VIDIOC-S-FBUF "<link linkend='vidioc-g-fbuf'><constant>VIDIOC_S_FBUF</constant></link>"> <!ENTITY VIDIOC-S-FMT "<link linkend='vidioc-g-fmt'><constant>VIDIOC_S_FMT</constant></link>"> @@ -118,6 +124,7 @@ <!-- Structures --> <!ENTITY v4l2-audio "struct <link linkend='v4l2-audio'>v4l2_audio</link>"> <!ENTITY v4l2-audioout "struct <link linkend='v4l2-audioout'>v4l2_audioout</link>"> +<!ENTITY v4l2-bt-timings "struct <link linkend='v4l2-bt-timings'>v4l2_bt_timings</link>"> <!ENTITY v4l2-buffer "struct <link linkend='v4l2-buffer'>v4l2_buffer</link>"> <!ENTITY v4l2-capability "struct <link linkend='v4l2-capability'>v4l2_capability</link>"> <!ENTITY v4l2-captureparm "struct <link linkend='v4l2-captureparm'>v4l2_captureparm</link>"> @@ -128,6 +135,9 @@ <!ENTITY v4l2-dbg-chip-ident "struct <link linkend='v4l2-dbg-chip-ident'>v4l2_dbg_chip_ident</link>"> <!ENTITY v4l2-dbg-match "struct <link linkend='v4l2-dbg-match'>v4l2_dbg_match</link>"> <!ENTITY v4l2-dbg-register "struct <link linkend='v4l2-dbg-register'>v4l2_dbg_register</link>"> +<!ENTITY v4l2-dv-enum-preset "struct <link linkend='v4l2-dv-enum-preset'>v4l2_dv_enum_preset</link>"> +<!ENTITY v4l2-dv-preset "struct <link linkend='v4l2-dv-preset'>v4l2_dv_preset</link>"> +<!ENTITY v4l2-dv-timings "struct <link linkend='v4l2-dv-timings'>v4l2_dv_timings</link>"> <!ENTITY v4l2-enc-idx "struct <link linkend='v4l2-enc-idx'>v4l2_enc_idx</link>"> <!ENTITY v4l2-enc-idx-entry "struct <link linkend='v4l2-enc-idx-entry'>v4l2_enc_idx_entry</link>"> <!ENTITY v4l2-encoder-cmd "struct <link linkend='v4l2-encoder-cmd'>v4l2_encoder_cmd</link>"> @@ -243,6 +253,10 @@ <!ENTITY sub-enumaudioout SYSTEM "v4l/vidioc-enumaudioout.xml"> <!ENTITY sub-enuminput SYSTEM "v4l/vidioc-enuminput.xml"> <!ENTITY sub-enumoutput SYSTEM "v4l/vidioc-enumoutput.xml"> +<!ENTITY sub-enum-dv-presets SYSTEM "v4l/vidioc-enum-dv-presets.xml"> +<!ENTITY sub-g-dv-preset SYSTEM "v4l/vidioc-g-dv-preset.xml"> +<!ENTITY sub-query-dv-preset SYSTEM "v4l/vidioc-query-dv-preset.xml"> +<!ENTITY sub-g-dv-timings SYSTEM "v4l/vidioc-g-dv-timings.xml"> <!ENTITY sub-enumstd SYSTEM "v4l/vidioc-enumstd.xml"> <!ENTITY sub-g-audio SYSTEM "v4l/vidioc-g-audio.xml"> <!ENTITY sub-g-audioout SYSTEM "v4l/vidioc-g-audioout.xml"> @@ -333,6 +347,10 @@ <!ENTITY enumaudioout SYSTEM "v4l/vidioc-enumaudioout.xml"> <!ENTITY enuminput SYSTEM "v4l/vidioc-enuminput.xml"> <!ENTITY enumoutput SYSTEM "v4l/vidioc-enumoutput.xml"> +<!ENTITY enum-dv-presets SYSTEM "v4l/vidioc-enum-dv-presets.xml"> +<!ENTITY g-dv-preset SYSTEM "v4l/vidioc-g-dv-preset.xml"> +<!ENTITY query-dv-preset SYSTEM "v4l/vidioc-query-dv-preset.xml"> +<!ENTITY g-dv-timings SYSTEM "v4l/vidioc-g-dv-timings.xml"> <!ENTITY enumstd SYSTEM "v4l/vidioc-enumstd.xml"> <!ENTITY g-audio SYSTEM "v4l/vidioc-g-audio.xml"> <!ENTITY g-audioout SYSTEM "v4l/vidioc-g-audioout.xml"> diff --git a/Documentation/DocBook/media-indices.tmpl b/Documentation/DocBook/media-indices.tmpl index 9e30a236d74..78d6031de00 100644 --- a/Documentation/DocBook/media-indices.tmpl +++ b/Documentation/DocBook/media-indices.tmpl @@ -36,6 +36,7 @@ <indexentry><primaryie>enum <link linkend='v4l2-preemphasis'>v4l2_preemphasis</link></primaryie></indexentry> <indexentry><primaryie>struct <link linkend='v4l2-audio'>v4l2_audio</link></primaryie></indexentry> <indexentry><primaryie>struct <link linkend='v4l2-audioout'>v4l2_audioout</link></primaryie></indexentry> +<indexentry><primaryie>struct <link linkend='v4l2-bt-timings'>v4l2_bt_timings</link></primaryie></indexentry> <indexentry><primaryie>struct <link linkend='v4l2-buffer'>v4l2_buffer</link></primaryie></indexentry> <indexentry><primaryie>struct <link linkend='v4l2-capability'>v4l2_capability</link></primaryie></indexentry> <indexentry><primaryie>struct <link linkend='v4l2-captureparm'>v4l2_captureparm</link></primaryie></indexentry> @@ -46,6 +47,9 @@ <indexentry><primaryie>struct <link linkend='v4l2-dbg-chip-ident'>v4l2_dbg_chip_ident</link></primaryie></indexentry> <indexentry><primaryie>struct <link linkend='v4l2-dbg-match'>v4l2_dbg_match</link></primaryie></indexentry> <indexentry><primaryie>struct <link linkend='v4l2-dbg-register'>v4l2_dbg_register</link></primaryie></indexentry> +<indexentry><primaryie>struct <link linkend='v4l2-dv-enum-preset'>v4l2_dv_enum_preset</link></primaryie></indexentry> +<indexentry><primaryie>struct <link linkend='v4l2-dv-preset'>v4l2_dv_preset</link></primaryie></indexentry> +<indexentry><primaryie>struct <link linkend='v4l2-dv-timings'>v4l2_dv_timings</link></primaryie></indexentry> <indexentry><primaryie>struct <link linkend='v4l2-enc-idx'>v4l2_enc_idx</link></primaryie></indexentry> <indexentry><primaryie>struct <link linkend='v4l2-enc-idx-entry'>v4l2_enc_idx_entry</link></primaryie></indexentry> <indexentry><primaryie>struct <link linkend='v4l2-encoder-cmd'>v4l2_encoder_cmd</link></primaryie></indexentry> diff --git a/Documentation/DocBook/procfs-guide.tmpl b/Documentation/DocBook/procfs-guide.tmpl deleted file mode 100644 index 9eba4b7af73..00000000000 --- a/Documentation/DocBook/procfs-guide.tmpl +++ /dev/null @@ -1,626 +0,0 @@ -<?xml version="1.0" encoding="UTF-8"?> -<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" - "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [ -<!ENTITY procfsexample SYSTEM "procfs_example.xml"> -]> - -<book id="LKProcfsGuide"> - <bookinfo> - <title>Linux Kernel Procfs Guide</title> - - <authorgroup> - <author> - <firstname>Erik</firstname> - <othername>(J.A.K.)</othername> - <surname>Mouw</surname> - <affiliation> - <address> - <email>mouw@nl.linux.org</email> - </address> - </affiliation> - </author> - <othercredit> - <contrib> - This software and documentation were written while working on the - LART computing board - (<ulink url="http://www.lartmaker.nl/">http://www.lartmaker.nl/</ulink>), - which was sponsored by the Delt University of Technology projects - Mobile Multi-media Communications and Ubiquitous Communications. - </contrib> - </othercredit> - </authorgroup> - - <revhistory> - <revision> - <revnumber>1.0</revnumber> - <date>May 30, 2001</date> - <revremark>Initial revision posted to linux-kernel</revremark> - </revision> - <revision> - <revnumber>1.1</revnumber> - <date>June 3, 2001</date> - <revremark>Revised after comments from linux-kernel</revremark> - </revision> - </revhistory> - - <copyright> - <year>2001</year> - <holder>Erik Mouw</holder> - </copyright> - - - <legalnotice> - <para> - This documentation is free software; you can redistribute it - and/or modify it under the terms of the GNU General Public - License as published by the Free Software Foundation; either - version 2 of the License, or (at your option) any later - version. - </para> - - <para> - This documentation is distributed in the hope that it will be - useful, but WITHOUT ANY WARRANTY; without even the implied - warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - PURPOSE. See the GNU General Public License for more details. - </para> - - <para> - You should have received a copy of the GNU General Public - License along with this program; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, - MA 02111-1307 USA - </para> - - <para> - For more details see the file COPYING in the source - distribution of Linux. - </para> - </legalnotice> - </bookinfo> - - - - - <toc> - </toc> - - - - - <preface id="Preface"> - <title>Preface</title> - - <para> - This guide describes the use of the procfs file system from - within the Linux kernel. The idea to write this guide came up on - the #kernelnewbies IRC channel (see <ulink - url="http://www.kernelnewbies.org/">http://www.kernelnewbies.org/</ulink>), - when Jeff Garzik explained the use of procfs and forwarded me a - message Alexander Viro wrote to the linux-kernel mailing list. I - agreed to write it up nicely, so here it is. - </para> - - <para> - I'd like to thank Jeff Garzik - <email>jgarzik@pobox.com</email> and Alexander Viro - <email>viro@parcelfarce.linux.theplanet.co.uk</email> for their input, - Tim Waugh <email>twaugh@redhat.com</email> for his <ulink - url="http://people.redhat.com/twaugh/docbook/selfdocbook/">Selfdocbook</ulink>, - and Marc Joosen <email>marcj@historia.et.tudelft.nl</email> for - proofreading. - </para> - - <para> - Erik - </para> - </preface> - - - - - <chapter id="intro"> - <title>Introduction</title> - - <para> - The <filename class="directory">/proc</filename> file system - (procfs) is a special file system in the linux kernel. It's a - virtual file system: it is not associated with a block device - but exists only in memory. The files in the procfs are there to - allow userland programs access to certain information from the - kernel (like process information in <filename - class="directory">/proc/[0-9]+/</filename>), but also for debug - purposes (like <filename>/proc/ksyms</filename>). - </para> - - <para> - This guide describes the use of the procfs file system from - within the Linux kernel. It starts by introducing all relevant - functions to manage the files within the file system. After that - it shows how to communicate with userland, and some tips and - tricks will be pointed out. Finally a complete example will be - shown. - </para> - - <para> - Note that the files in <filename - class="directory">/proc/sys</filename> are sysctl files: they - don't belong to procfs and are governed by a completely - different API described in the Kernel API book. - </para> - </chapter> - - - - - <chapter id="managing"> - <title>Managing procfs entries</title> - - <para> - This chapter describes the functions that various kernel - components use to populate the procfs with files, symlinks, - device nodes, and directories. - </para> - - <para> - A minor note before we start: if you want to use any of the - procfs functions, be sure to include the correct header file! - This should be one of the first lines in your code: - </para> - - <programlisting> -#include <linux/proc_fs.h> - </programlisting> - - - - - <sect1 id="regularfile"> - <title>Creating a regular file</title> - - <funcsynopsis> - <funcprototype> - <funcdef>struct proc_dir_entry* <function>create_proc_entry</function></funcdef> - <paramdef>const char* <parameter>name</parameter></paramdef> - <paramdef>mode_t <parameter>mode</parameter></paramdef> - <paramdef>struct proc_dir_entry* <parameter>parent</parameter></paramdef> - </funcprototype> - </funcsynopsis> - - <para> - This function creates a regular file with the name - <parameter>name</parameter>, file mode - <parameter>mode</parameter> in the directory - <parameter>parent</parameter>. To create a file in the root of - the procfs, use <constant>NULL</constant> as - <parameter>parent</parameter> parameter. When successful, the - function will return a pointer to the freshly created - <structname>struct proc_dir_entry</structname>; otherwise it - will return <constant>NULL</constant>. <xref - linkend="userland"/> describes how to do something useful with - regular files. - </para> - - <para> - Note that it is specifically supported that you can pass a - path that spans multiple directories. For example - <function>create_proc_entry</function>(<parameter>"drivers/via0/info"</parameter>) - will create the <filename class="directory">via0</filename> - directory if necessary, with standard - <constant>0755</constant> permissions. - </para> - - <para> - If you only want to be able to read the file, the function - <function>create_proc_read_entry</function> described in <xref - linkend="convenience"/> may be used to create and initialise - the procfs entry in one single call. - </para> - </sect1> - - - - - <sect1 id="Creating_a_symlink"> - <title>Creating a symlink</title> - - <funcsynopsis> - <funcprototype> - <funcdef>struct proc_dir_entry* - <function>proc_symlink</function></funcdef> <paramdef>const - char* <parameter>name</parameter></paramdef> - <paramdef>struct proc_dir_entry* - <parameter>parent</parameter></paramdef> <paramdef>const - char* <parameter>dest</parameter></paramdef> - </funcprototype> - </funcsynopsis> - - <para> - This creates a symlink in the procfs directory - <parameter>parent</parameter> that points from - <parameter>name</parameter> to - <parameter>dest</parameter>. This translates in userland to - <literal>ln -s</literal> <parameter>dest</parameter> - <parameter>name</parameter>. - </para> - </sect1> - - <sect1 id="Creating_a_directory"> - <title>Creating a directory</title> - - <funcsynopsis> - <funcprototype> - <funcdef>struct proc_dir_entry* <function>proc_mkdir</function></funcdef> - <paramdef>const char* <parameter>name</parameter></paramdef> - <paramdef>struct proc_dir_entry* <parameter>parent</parameter></paramdef> - </funcprototype> - </funcsynopsis> - - <para> - Create a directory <parameter>name</parameter> in the procfs - directory <parameter>parent</parameter>. - </para> - </sect1> - - - - - <sect1 id="Removing_an_entry"> - <title>Removing an entry</title> - - <funcsynopsis> - <funcprototype> - <funcdef>void <function>remove_proc_entry</function></funcdef> - <paramdef>const char* <parameter>name</parameter></paramdef> - <paramdef>struct proc_dir_entry* <parameter>parent</parameter></paramdef> - </funcprototype> - </funcsynopsis> - - <para> - Removes the entry <parameter>name</parameter> in the directory - <parameter>parent</parameter> from the procfs. Entries are - removed by their <emphasis>name</emphasis>, not by the - <structname>struct proc_dir_entry</structname> returned by the - various create functions. Note that this function doesn't - recursively remove entries. - </para> - - <para> - Be sure to free the <structfield>data</structfield> entry from - the <structname>struct proc_dir_entry</structname> before - <function>remove_proc_entry</function> is called (that is: if - there was some <structfield>data</structfield> allocated, of - course). See <xref linkend="usingdata"/> for more information - on using the <structfield>data</structfield> entry. - </para> - </sect1> - </chapter> - - - - - <chapter id="userland"> - <title>Communicating with userland</title> - - <para> - Instead of reading (or writing) information directly from - kernel memory, procfs works with <emphasis>call back - functions</emphasis> for files: functions that are called when - a specific file is being read or written. Such functions have - to be initialised after the procfs file is created by setting - the <structfield>read_proc</structfield> and/or - <structfield>write_proc</structfield> fields in the - <structname>struct proc_dir_entry*</structname> that the - function <function>create_proc_entry</function> returned: - </para> - - <programlisting> -struct proc_dir_entry* entry; - -entry->read_proc = read_proc_foo; -entry->write_proc = write_proc_foo; - </programlisting> - - <para> - If you only want to use a the - <structfield>read_proc</structfield>, the function - <function>create_proc_read_entry</function> described in <xref - linkend="convenience"/> may be used to create and initialise the - procfs entry in one single call. - </para> - - - - <sect1 id="Reading_data"> - <title>Reading data</title> - - <para> - The read function is a call back function that allows userland - processes to read data from the kernel. The read function - should have the following format: - </para> - - <funcsynopsis> - <funcprototype> - <funcdef>int <function>read_func</function></funcdef> - <paramdef>char* <parameter>buffer</parameter></paramdef> - <paramdef>char** <parameter>start</parameter></paramdef> - <paramdef>off_t <parameter>off</parameter></paramdef> - <paramdef>int <parameter>count</parameter></paramdef> - <paramdef>int* <parameter>peof</parameter></paramdef> - <paramdef>void* <parameter>data</parameter></paramdef> - </funcprototype> - </funcsynopsis> - - <para> - The read function should write its information into the - <parameter>buffer</parameter>, which will be exactly - <literal>PAGE_SIZE</literal> bytes long. - </para> - - <para> - The parameter - <parameter>peof</parameter> should be used to signal that the - end of the file has been reached by writing - <literal>1</literal> to the memory location - <parameter>peof</parameter> points to. - </para> - - <para> - The <parameter>data</parameter> - parameter can be used to create a single call back function for - several files, see <xref linkend="usingdata"/>. - </para> - - <para> - The rest of the parameters and the return value are described - by a comment in <filename>fs/proc/generic.c</filename> as follows: - </para> - - <blockquote> - <para> - You have three ways to return data: - </para> - <orderedlist> - <listitem> - <para> - Leave <literal>*start = NULL</literal>. (This is the default.) - Put the data of the requested offset at that - offset within the buffer. Return the number (<literal>n</literal>) - of bytes there are from the beginning of the - buffer up to the last byte of data. If the - number of supplied bytes (<literal>= n - offset</literal>) is - greater than zero and you didn't signal eof - and the reader is prepared to take more data - you will be called again with the requested - offset advanced by the number of bytes - absorbed. This interface is useful for files - no larger than the buffer. - </para> - </listitem> - <listitem> - <para> - Set <literal>*start</literal> to an unsigned long value less than - the buffer address but greater than zero. - Put the data of the requested offset at the - beginning of the buffer. Return the number of - bytes of data placed there. If this number is - greater than zero and you didn't signal eof - and the reader is prepared to take more data - you will be called again with the requested - offset advanced by <literal>*start</literal>. This interface is - useful when you have a large file consisting - of a series of blocks which you want to count - and return as wholes. - (Hack by Paul.Russell@rustcorp.com.au) - </para> - </listitem> - <listitem> - <para> - Set <literal>*start</literal> to an address within the buffer. - Put the data of the requested offset at <literal>*start</literal>. - Return the number of bytes of data placed there. - If this number is greater than zero and you - didn't signal eof and the reader is prepared to - take more data you will be called again with the - requested offset advanced by the number of bytes - absorbed. - </para> - </listitem> - </orderedlist> - </blockquote> - - <para> - <xref linkend="example"/> shows how to use a read call back - function. - </para> - </sect1> - - - - - <sect1 id="Writing_data"> - <title>Writing data</title> - - <para> - The write call back function allows a userland process to write - data to the kernel, so it has some kind of control over the - kernel. The write function should have the following format: - </para> - - <funcsynopsis> - <funcprototype> - <funcdef>int <function>write_func</function></funcdef> - <paramdef>struct file* <parameter>file</parameter></paramdef> - <paramdef>const char* <parameter>buffer</parameter></paramdef> - <paramdef>unsigned long <parameter>count</parameter></paramdef> - <paramdef>void* <parameter>data</parameter></paramdef> - </funcprototype> - </funcsynopsis> - - <para> - The write function should read <parameter>count</parameter> - bytes at maximum from the <parameter>buffer</parameter>. Note - that the <parameter>buffer</parameter> doesn't live in the - kernel's memory space, so it should first be copied to kernel - space with <function>copy_from_user</function>. The - <parameter>file</parameter> parameter is usually - ignored. <xref linkend="usingdata"/> shows how to use the - <parameter>data</parameter> parameter. - </para> - - <para> - Again, <xref linkend="example"/> shows how to use this call back - function. - </para> - </sect1> - - - - - <sect1 id="usingdata"> - <title>A single call back for many files</title> - - <para> - When a large number of almost identical files is used, it's - quite inconvenient to use a separate call back function for - each file. A better approach is to have a single call back - function that distinguishes between the files by using the - <structfield>data</structfield> field in <structname>struct - proc_dir_entry</structname>. First of all, the - <structfield>data</structfield> field has to be initialised: - </para> - - <programlisting> -struct proc_dir_entry* entry; -struct my_file_data *file_data; - -file_data = kmalloc(sizeof(struct my_file_data), GFP_KERNEL); -entry->data = file_data; - </programlisting> - - <para> - The <structfield>data</structfield> field is a <type>void - *</type>, so it can be initialised with anything. - </para> - - <para> - Now that the <structfield>data</structfield> field is set, the - <function>read_proc</function> and - <function>write_proc</function> can use it to distinguish - between files because they get it passed into their - <parameter>data</parameter> parameter: - </para> - - <programlisting> -int foo_read_func(char *page, char **start, off_t off, - int count, int *eof, void *data) -{ - int len; - - if(data == file_data) { - /* special case for this file */ - } else { - /* normal processing */ - } - - return len; -} - </programlisting> - - <para> - Be sure to free the <structfield>data</structfield> data field - when removing the procfs entry. - </para> - </sect1> - </chapter> - - - - - <chapter id="tips"> - <title>Tips and tricks</title> - - - - - <sect1 id="convenience"> - <title>Convenience functions</title> - - <funcsynopsis> - <funcprototype> - <funcdef>struct proc_dir_entry* <function>create_proc_read_entry</function></funcdef> - <paramdef>const char* <parameter>name</parameter></paramdef> - <paramdef>mode_t <parameter>mode</parameter></paramdef> - <paramdef>struct proc_dir_entry* <parameter>parent</parameter></paramdef> - <paramdef>read_proc_t* <parameter>read_proc</parameter></paramdef> - <paramdef>void* <parameter>data</parameter></paramdef> - </funcprototype> - </funcsynopsis> - - <para> - This function creates a regular file in exactly the same way - as <function>create_proc_entry</function> from <xref - linkend="regularfile"/> does, but also allows to set the read - function <parameter>read_proc</parameter> in one call. This - function can set the <parameter>data</parameter> as well, like - explained in <xref linkend="usingdata"/>. - </para> - </sect1> - - - - <sect1 id="Modules"> - <title>Modules</title> - - <para> - If procfs is being used from within a module, be sure to set - the <structfield>owner</structfield> field in the - <structname>struct proc_dir_entry</structname> to - <constant>THIS_MODULE</constant>. - </para> - - <programlisting> -struct proc_dir_entry* entry; - -entry->owner = THIS_MODULE; - </programlisting> - </sect1> - - - - - <sect1 id="Mode_and_ownership"> - <title>Mode and ownership</title> - - <para> - Sometimes it is useful to change the mode and/or ownership of - a procfs entry. Here is an example that shows how to achieve - that: - </para> - - <programlisting> -struct proc_dir_entry* entry; - -entry->mode = S_IWUSR |S_IRUSR | S_IRGRP | S_IROTH; -entry->uid = 0; -entry->gid = 100; - </programlisting> - - </sect1> - </chapter> - - - - - <chapter id="example"> - <title>Example</title> - - <!-- be careful with the example code: it shouldn't be wider than - approx. 60 columns, or otherwise it won't fit properly on a page - --> - -&procfsexample; - - </chapter> -</book> diff --git a/Documentation/DocBook/procfs_example.c b/Documentation/DocBook/procfs_example.c deleted file mode 100644 index a5b11793b1e..00000000000 --- a/Documentation/DocBook/procfs_example.c +++ /dev/null @@ -1,201 +0,0 @@ -/* - * procfs_example.c: an example proc interface - * - * Copyright (C) 2001, Erik Mouw (mouw@nl.linux.org) - * - * This file accompanies the procfs-guide in the Linux kernel - * source. Its main use is to demonstrate the concepts and - * functions described in the guide. - * - * This software has been developed while working on the LART - * computing board (http://www.lartmaker.nl), which was sponsored - * by the Delt University of Technology projects Mobile Multi-media - * Communications and Ubiquitous Communications. - * - * This program is free software; you can redistribute - * it and/or modify it under the terms of the GNU General - * Public License as published by the Free Software - * Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place, - * Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/proc_fs.h> -#include <linux/jiffies.h> -#include <asm/uaccess.h> - - -#define MODULE_VERS "1.0" -#define MODULE_NAME "procfs_example" - -#define FOOBAR_LEN 8 - -struct fb_data_t { - char name[FOOBAR_LEN + 1]; - char value[FOOBAR_LEN + 1]; -}; - - -static struct proc_dir_entry *example_dir, *foo_file, - *bar_file, *jiffies_file, *symlink; - - -struct fb_data_t foo_data, bar_data; - - -static int proc_read_jiffies(char *page, char **start, - off_t off, int count, - int *eof, void *data) -{ - int len; - - len = sprintf(page, "jiffies = %ld\n", - jiffies); - - return len; -} - - -static int proc_read_foobar(char *page, char **start, - off_t off, int count, - int *eof, void *data) -{ - int len; - struct fb_data_t *fb_data = (struct fb_data_t *)data; - - /* DON'T DO THAT - buffer overruns are bad */ - len = sprintf(page, "%s = '%s'\n", - fb_data->name, fb_data->value); - - return len; -} - - -static int proc_write_foobar(struct file *file, - const char *buffer, - unsigned long count, - void *data) -{ - int len; - struct fb_data_t *fb_data = (struct fb_data_t *)data; - - if(count > FOOBAR_LEN) - len = FOOBAR_LEN; - else - len = count; - - if(copy_from_user(fb_data->value, buffer, len)) - return -EFAULT; - - fb_data->value[len] = '\0'; - - return len; -} - - -static int __init init_procfs_example(void) -{ - int rv = 0; - - /* create directory */ - example_dir = proc_mkdir(MODULE_NAME, NULL); - if(example_dir == NULL) { - rv = -ENOMEM; - goto out; - } - /* create jiffies using convenience function */ - jiffies_file = create_proc_read_entry("jiffies", - 0444, example_dir, - proc_read_jiffies, - NULL); - if(jiffies_file == NULL) { - rv = -ENOMEM; - goto no_jiffies; - } - - /* create foo and bar files using same callback - * functions - */ - foo_file = create_proc_entry("foo", 0644, example_dir); - if(foo_file == NULL) { - rv = -ENOMEM; - goto no_foo; - } - - strcpy(foo_data.name, "foo"); - strcpy(foo_data.value, "foo"); - foo_file->data = &foo_data; - foo_file->read_proc = proc_read_foobar; - foo_file->write_proc = proc_write_foobar; - - bar_file = create_proc_entry("bar", 0644, example_dir); - if(bar_file == NULL) { - rv = -ENOMEM; - goto no_bar; - } - - strcpy(bar_data.name, "bar"); - strcpy(bar_data.value, "bar"); - bar_file->data = &bar_data; - bar_file->read_proc = proc_read_foobar; - bar_file->write_proc = proc_write_foobar; - - /* create symlink */ - symlink = proc_symlink("jiffies_too", example_dir, - "jiffies"); - if(symlink == NULL) { - rv = -ENOMEM; - goto no_symlink; - } - - /* everything OK */ - printk(KERN_INFO "%s %s initialised\n", - MODULE_NAME, MODULE_VERS); - return 0; - -no_symlink: - remove_proc_entry("bar", example_dir); -no_bar: - remove_proc_entry("foo", example_dir); -no_foo: - remove_proc_entry("jiffies", example_dir); -no_jiffies: - remove_proc_entry(MODULE_NAME, NULL); -out: - return rv; -} - - -static void __exit cleanup_procfs_example(void) -{ - remove_proc_entry("jiffies_too", example_dir); - remove_proc_entry("bar", example_dir); - remove_proc_entry("foo", example_dir); - remove_proc_entry("jiffies", example_dir); - remove_proc_entry(MODULE_NAME, NULL); - - printk(KERN_INFO "%s %s removed\n", - MODULE_NAME, MODULE_VERS); -} - - -module_init(init_procfs_example); -module_exit(cleanup_procfs_example); - -MODULE_AUTHOR("Erik Mouw"); -MODULE_DESCRIPTION("procfs examples"); -MODULE_LICENSE("GPL"); diff --git a/Documentation/DocBook/v4l/common.xml b/Documentation/DocBook/v4l/common.xml index b1a81d246d5..c65f0ac9b6e 100644 --- a/Documentation/DocBook/v4l/common.xml +++ b/Documentation/DocBook/v4l/common.xml @@ -716,6 +716,41 @@ if (-1 == ioctl (fd, &VIDIOC-S-STD;, &std_id)) { } </programlisting> </example> + <section id="dv-timings"> + <title>Digital Video (DV) Timings</title> + <para> + The video standards discussed so far has been dealing with Analog TV and the +corresponding video timings. Today there are many more different hardware interfaces +such as High Definition TV interfaces (HDMI), VGA, DVI connectors etc., that carry +video signals and there is a need to extend the API to select the video timings +for these interfaces. Since it is not possible to extend the &v4l2-std-id; due to +the limited bits available, a new set of IOCTLs is added to set/get video timings at +the input and output: </para><itemizedlist> + <listitem> + <para>DV Presets: Digital Video (DV) presets. These are IDs representing a +video timing at the input/output. Presets are pre-defined timings implemented +by the hardware according to video standards. A __u32 data type is used to represent +a preset unlike the bit mask that is used in &v4l2-std-id; allowing future extensions +to support as many different presets as needed.</para> + </listitem> + <listitem> + <para>Custom DV Timings: This will allow applications to define more detailed +custom video timings for the interface. This includes parameters such as width, height, +polarities, frontporch, backporch etc. + </para> + </listitem> + </itemizedlist> + <para>To enumerate and query the attributes of DV presets supported by a device, +applications use the &VIDIOC-ENUM-DV-PRESETS; ioctl. To get the current DV preset, +applications use the &VIDIOC-G-DV-PRESET; ioctl and to set a preset they use the +&VIDIOC-S-DV-PRESET; ioctl.</para> + <para>To set custom DV timings for the device, applications use the +&VIDIOC-S-DV-TIMINGS; ioctl and to get current custom DV timings they use the +&VIDIOC-G-DV-TIMINGS; ioctl.</para> + <para>Applications can make use of the <xref linkend="input-capabilities" /> and +<xref linkend="output-capabilities"/> flags to decide what ioctls are available to set the +video timings for the device.</para> + </section> </section> &sub-controls; diff --git a/Documentation/DocBook/v4l/compat.xml b/Documentation/DocBook/v4l/compat.xml index 4d1902a54d6..b9dbdf9e6d2 100644 --- a/Documentation/DocBook/v4l/compat.xml +++ b/Documentation/DocBook/v4l/compat.xml @@ -2291,8 +2291,8 @@ was renamed to <structname id="v4l2-chip-ident-old">v4l2_chip_ident_old</structn <listitem> <para>New control <constant>V4L2_CID_COLORFX</constant> was added.</para> </listitem> - </orderedlist> - </section> + </orderedlist> + </section> <section> <title>V4L2 in Linux 2.6.32</title> <orderedlist> @@ -2322,8 +2322,16 @@ more information.</para> <listitem> <para>Added Remote Controller chapter, describing the default Remote Controller mapping for media devices.</para> </listitem> - </orderedlist> - </section> + </orderedlist> + </section> + <section> + <title>V4L2 in Linux 2.6.33</title> + <orderedlist> + <listitem> + <para>Added support for Digital Video timings in order to support HDTV receivers and transmitters.</para> + </listitem> + </orderedlist> + </section> </section> <section id="other"> diff --git a/Documentation/DocBook/v4l/v4l2.xml b/Documentation/DocBook/v4l/v4l2.xml index 937b4157a5d..060105af49e 100644 --- a/Documentation/DocBook/v4l/v4l2.xml +++ b/Documentation/DocBook/v4l/v4l2.xml @@ -74,6 +74,17 @@ Remote Controller chapter.</contrib> </address> </affiliation> </author> + + <author> + <firstname>Muralidharan</firstname> + <surname>Karicheri</surname> + <contrib>Documented the Digital Video timings API.</contrib> + <affiliation> + <address> + <email>m-karicheri2@ti.com</email> + </address> + </affiliation> + </author> </authorgroup> <copyright> @@ -89,7 +100,7 @@ Remote Controller chapter.</contrib> <year>2008</year> <year>2009</year> <holder>Bill Dirks, Michael H. Schimek, Hans Verkuil, Martin -Rubli, Andy Walls, Mauro Carvalho Chehab</holder> +Rubli, Andy Walls, Muralidharan Karicheri, Mauro Carvalho Chehab</holder> </copyright> <legalnotice> <para>Except when explicitly stated as GPL, programming examples within @@ -103,6 +114,13 @@ structs, ioctls) must be noted in more detail in the history chapter applications. --> <revision> + <revnumber>2.6.33</revnumber> + <date>2009-12-03</date> + <authorinitials>mk</authorinitials> + <revremark>Added documentation for the Digital Video timings API.</revremark> + </revision> + + <revision> <revnumber>2.6.32</revnumber> <date>2009-08-31</date> <authorinitials>mcc</authorinitials> @@ -355,7 +373,7 @@ and discussions on the V4L mailing list.</revremark> </partinfo> <title>Video for Linux Two API Specification</title> - <subtitle>Revision 2.6.32</subtitle> + <subtitle>Revision 2.6.33</subtitle> <chapter id="common"> &sub-common; @@ -411,6 +429,7 @@ and discussions on the V4L mailing list.</revremark> &sub-encoder-cmd; &sub-enumaudio; &sub-enumaudioout; + &sub-enum-dv-presets; &sub-enum-fmt; &sub-enum-framesizes; &sub-enum-frameintervals; @@ -421,6 +440,8 @@ and discussions on the V4L mailing list.</revremark> &sub-g-audioout; &sub-g-crop; &sub-g-ctrl; + &sub-g-dv-preset; + &sub-g-dv-timings; &sub-g-enc-index; &sub-g-ext-ctrls; &sub-g-fbuf; @@ -441,6 +462,7 @@ and discussions on the V4L mailing list.</revremark> &sub-querybuf; &sub-querycap; &sub-queryctrl; + &sub-query-dv-preset; &sub-querystd; &sub-reqbufs; &sub-s-hw-freq-seek; diff --git a/Documentation/DocBook/v4l/videodev2.h.xml b/Documentation/DocBook/v4l/videodev2.h.xml index 3e282ed9f59..06832594065 100644 --- a/Documentation/DocBook/v4l/videodev2.h.xml +++ b/Documentation/DocBook/v4l/videodev2.h.xml @@ -734,6 +734,99 @@ struct <link linkend="v4l2-standard">v4l2_standard</link> { }; /* + * V I D E O T I M I N G S D V P R E S E T + */ +struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link> { + __u32 preset; + __u32 reserved[4]; +}; + +/* + * D V P R E S E T S E N U M E R A T I O N + */ +struct <link linkend="v4l2-dv-enum-preset">v4l2_dv_enum_preset</link> { + __u32 index; + __u32 preset; + __u8 name[32]; /* Name of the preset timing */ + __u32 width; + __u32 height; + __u32 reserved[4]; +}; + +/* + * D V P R E S E T V A L U E S + */ +#define V4L2_DV_INVALID 0 +#define V4L2_DV_480P59_94 1 /* BT.1362 */ +#define V4L2_DV_576P50 2 /* BT.1362 */ +#define V4L2_DV_720P24 3 /* SMPTE 296M */ +#define V4L2_DV_720P25 4 /* SMPTE 296M */ +#define V4L2_DV_720P30 5 /* SMPTE 296M */ +#define V4L2_DV_720P50 6 /* SMPTE 296M */ +#define V4L2_DV_720P59_94 7 /* SMPTE 274M */ +#define V4L2_DV_720P60 8 /* SMPTE 274M/296M */ +#define V4L2_DV_1080I29_97 9 /* BT.1120/ SMPTE 274M */ +#define V4L2_DV_1080I30 10 /* BT.1120/ SMPTE 274M */ +#define V4L2_DV_1080I25 11 /* BT.1120 */ +#define V4L2_DV_1080I50 12 /* SMPTE 296M */ +#define V4L2_DV_1080I60 13 /* SMPTE 296M */ +#define V4L2_DV_1080P24 14 /* SMPTE 296M */ +#define V4L2_DV_1080P25 15 /* SMPTE 296M */ +#define V4L2_DV_1080P30 16 /* SMPTE 296M */ +#define V4L2_DV_1080P50 17 /* BT.1120 */ +#define V4L2_DV_1080P60 18 /* BT.1120 */ + +/* + * D V B T T I M I N G S + */ + +/* BT.656/BT.1120 timing data */ +struct <link linkend="v4l2-bt-timings">v4l2_bt_timings</link> { + __u32 width; /* width in pixels */ + __u32 height; /* height in lines */ + __u32 interlaced; /* Interlaced or progressive */ + __u32 polarities; /* Positive or negative polarity */ + __u64 pixelclock; /* Pixel clock in HZ. Ex. 74.25MHz->74250000 */ + __u32 hfrontporch; /* Horizpontal front porch in pixels */ + __u32 hsync; /* Horizontal Sync length in pixels */ + __u32 hbackporch; /* Horizontal back porch in pixels */ + __u32 vfrontporch; /* Vertical front porch in pixels */ + __u32 vsync; /* Vertical Sync length in lines */ + __u32 vbackporch; /* Vertical back porch in lines */ + __u32 il_vfrontporch; /* Vertical front porch for bottom field of + * interlaced field formats + */ + __u32 il_vsync; /* Vertical sync length for bottom field of + * interlaced field formats + */ + __u32 il_vbackporch; /* Vertical back porch for bottom field of + * interlaced field formats + */ + __u32 reserved[16]; +} __attribute__ ((packed)); + +/* Interlaced or progressive format */ +#define V4L2_DV_PROGRESSIVE 0 +#define V4L2_DV_INTERLACED 1 + +/* Polarities. If bit is not set, it is assumed to be negative polarity */ +#define V4L2_DV_VSYNC_POS_POL 0x00000001 +#define V4L2_DV_HSYNC_POS_POL 0x00000002 + + +/* DV timings */ +struct <link linkend="v4l2-dv-timings">v4l2_dv_timings</link> { + __u32 type; + union { + struct <link linkend="v4l2-bt-timings">v4l2_bt_timings</link> bt; + __u32 reserved[32]; + }; +} __attribute__ ((packed)); + +/* Values for the type field */ +#define V4L2_DV_BT_656_1120 0 /* BT.656/1120 timing type */ + +/* * V I D E O I N P U T S */ struct <link linkend="v4l2-input">v4l2_input</link> { @@ -744,7 +837,8 @@ struct <link linkend="v4l2-input">v4l2_input</link> { __u32 tuner; /* Associated tuner */ v4l2_std_id std; __u32 status; - __u32 reserved[4]; + __u32 capabilities; + __u32 reserved[3]; }; /* Values for the 'type' field */ @@ -775,6 +869,11 @@ struct <link linkend="v4l2-input">v4l2_input</link> { #define V4L2_IN_ST_NO_ACCESS 0x02000000 /* Conditional access denied */ #define V4L2_IN_ST_VTR 0x04000000 /* VTR time constant */ +/* capabilities flags */ +#define V4L2_IN_CAP_PRESETS 0x00000001 /* Supports S_DV_PRESET */ +#define V4L2_IN_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports S_DV_TIMINGS */ +#define V4L2_IN_CAP_STD 0x00000004 /* Supports S_STD */ + /* * V I D E O O U T P U T S */ @@ -785,13 +884,19 @@ struct <link linkend="v4l2-output">v4l2_output</link> { __u32 audioset; /* Associated audios (bitfield) */ __u32 modulator; /* Associated modulator */ v4l2_std_id std; - __u32 reserved[4]; + __u32 capabilities; + __u32 reserved[3]; }; /* Values for the 'type' field */ #define V4L2_OUTPUT_TYPE_MODULATOR 1 #define V4L2_OUTPUT_TYPE_ANALOG 2 #define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY 3 +/* capabilities flags */ +#define V4L2_OUT_CAP_PRESETS 0x00000001 /* Supports S_DV_PRESET */ +#define V4L2_OUT_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports S_DV_TIMINGS */ +#define V4L2_OUT_CAP_STD 0x00000004 /* Supports S_STD */ + /* * C O N T R O L S */ @@ -1626,6 +1731,13 @@ struct <link linkend="v4l2-dbg-chip-ident">v4l2_dbg_chip_ident</link> { #endif #define VIDIOC_S_HW_FREQ_SEEK _IOW('V', 82, struct <link linkend="v4l2-hw-freq-seek">v4l2_hw_freq_seek</link>) +#define VIDIOC_ENUM_DV_PRESETS _IOWR('V', 83, struct <link linkend="v4l2-dv-enum-preset">v4l2_dv_enum_preset</link>) +#define VIDIOC_S_DV_PRESET _IOWR('V', 84, struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link>) +#define VIDIOC_G_DV_PRESET _IOWR('V', 85, struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link>) +#define VIDIOC_QUERY_DV_PRESET _IOR('V', 86, struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link>) +#define VIDIOC_S_DV_TIMINGS _IOWR('V', 87, struct <link linkend="v4l2-dv-timings">v4l2_dv_timings</link>) +#define VIDIOC_G_DV_TIMINGS _IOWR('V', 88, struct <link linkend="v4l2-dv-timings">v4l2_dv_timings</link>) + /* Reminder: when adding new ioctls please add support for them to drivers/media/video/v4l2-compat-ioctl32.c as well! */ diff --git a/Documentation/DocBook/v4l/vidioc-enum-dv-presets.xml b/Documentation/DocBook/v4l/vidioc-enum-dv-presets.xml new file mode 100644 index 00000000000..1d31427edd1 --- /dev/null +++ b/Documentation/DocBook/v4l/vidioc-enum-dv-presets.xml @@ -0,0 +1,238 @@ +<refentry id="vidioc-enum-dv-presets"> + <refmeta> + <refentrytitle>ioctl VIDIOC_ENUM_DV_PRESETS</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>VIDIOC_ENUM_DV_PRESETS</refname> + <refpurpose>Enumerate supported Digital Video presets</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcprototype> + <funcdef>int <function>ioctl</function></funcdef> + <paramdef>int <parameter>fd</parameter></paramdef> + <paramdef>int <parameter>request</parameter></paramdef> + <paramdef>struct v4l2_dv_enum_preset *<parameter>argp</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Arguments</title> + + <variablelist> + <varlistentry> + <term><parameter>fd</parameter></term> + <listitem> + <para>&fd;</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>request</parameter></term> + <listitem> + <para>VIDIOC_ENUM_DV_PRESETS</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para></para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + + <para>To query the attributes of a DV preset, applications initialize the +<structfield>index</structfield> field and zero the reserved array of &v4l2-dv-enum-preset; +and call the <constant>VIDIOC_ENUM_DV_PRESETS</constant> ioctl with a pointer to this +structure. Drivers fill the rest of the structure or return an +&EINVAL; when the index is out of bounds. To enumerate all DV Presets supported, +applications shall begin at index zero, incrementing by one until the +driver returns <errorcode>EINVAL</errorcode>. Drivers may enumerate a +different set of DV presets after switching the video input or +output.</para> + + <table pgwide="1" frame="none" id="v4l2-dv-enum-preset"> + <title>struct <structname>v4l2_dv_enum_presets</structname></title> + <tgroup cols="3"> + &cs-str; + <tbody valign="top"> + <row> + <entry>__u32</entry> + <entry><structfield>index</structfield></entry> + <entry>Number of the DV preset, set by the +application.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>preset</structfield></entry> + <entry>This field identifies one of the DV preset values listed in <xref linkend="v4l2-dv-presets-vals"/>.</entry> + </row> + <row> + <entry>__u8</entry> + <entry><structfield>name</structfield>[24]</entry> + <entry>Name of the preset, a NUL-terminated ASCII string, for example: "720P-60", "1080I-60". This information is +intended for the user.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>width</structfield></entry> + <entry>Width of the active video in pixels for the DV preset.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>height</structfield></entry> + <entry>Height of the active video in lines for the DV preset.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>reserved</structfield>[4]</entry> + <entry>Reserved for future extensions. Drivers must set the array to zero.</entry> + </row> + </tbody> + </tgroup> + </table> + + <table pgwide="1" frame="none" id="v4l2-dv-presets-vals"> + <title>struct <structname>DV Presets</structname></title> + <tgroup cols="3"> + &cs-str; + <tbody valign="top"> + <row> + <entry>Preset</entry> + <entry>Preset value</entry> + <entry>Description</entry> + </row> + <row> + <entry></entry> + <entry></entry> + <entry></entry> + </row> + <row> + <entry>V4L2_DV_INVALID</entry> + <entry>0</entry> + <entry>Invalid preset value.</entry> + </row> + <row> + <entry>V4L2_DV_480P59_94</entry> + <entry>1</entry> + <entry>720x480 progressive video at 59.94 fps as per BT.1362.</entry> + </row> + <row> + <entry>V4L2_DV_576P50</entry> + <entry>2</entry> + <entry>720x576 progressive video at 50 fps as per BT.1362.</entry> + </row> + <row> + <entry>V4L2_DV_720P24</entry> + <entry>3</entry> + <entry>1280x720 progressive video at 24 fps as per SMPTE 296M.</entry> + </row> + <row> + <entry>V4L2_DV_720P25</entry> + <entry>4</entry> + <entry>1280x720 progressive video at 25 fps as per SMPTE 296M.</entry> + </row> + <row> + <entry>V4L2_DV_720P30</entry> + <entry>5</entry> + <entry>1280x720 progressive video at 30 fps as per SMPTE 296M.</entry> + </row> + <row> + <entry>V4L2_DV_720P50</entry> + <entry>6</entry> + <entry>1280x720 progressive video at 50 fps as per SMPTE 296M.</entry> + </row> + <row> + <entry>V4L2_DV_720P59_94</entry> + <entry>7</entry> + <entry>1280x720 progressive video at 59.94 fps as per SMPTE 274M.</entry> + </row> + <row> + <entry>V4L2_DV_720P60</entry> + <entry>8</entry> + <entry>1280x720 progressive video at 60 fps as per SMPTE 274M/296M.</entry> + </row> + <row> + <entry>V4L2_DV_1080I29_97</entry> + <entry>9</entry> + <entry>1920x1080 interlaced video at 29.97 fps as per BT.1120/SMPTE 274M.</entry> + </row> + <row> + <entry>V4L2_DV_1080I30</entry> + <entry>10</entry> + <entry>1920x1080 interlaced video at 30 fps as per BT.1120/SMPTE 274M.</entry> + </row> + <row> + <entry>V4L2_DV_1080I25</entry> + <entry>11</entry> + <entry>1920x1080 interlaced video at 25 fps as per BT.1120.</entry> + </row> + <row> + <entry>V4L2_DV_1080I50</entry> + <entry>12</entry> + <entry>1920x1080 interlaced video at 50 fps as per SMPTE 296M.</entry> + </row> + <row> + <entry>V4L2_DV_1080I60</entry> + <entry>13</entry> + <entry>1920x1080 interlaced video at 60 fps as per SMPTE 296M.</entry> + </row> + <row> + <entry>V4L2_DV_1080P24</entry> + <entry>14</entry> + <entry>1920x1080 progressive video at 24 fps as per SMPTE 296M.</entry> + </row> + <row> + <entry>V4L2_DV_1080P25</entry> + <entry>15</entry> + <entry>1920x1080 progressive video at 25 fps as per SMPTE 296M.</entry> + </row> + <row> + <entry>V4L2_DV_1080P30</entry> + <entry>16</entry> + <entry>1920x1080 progressive video at 30 fps as per SMPTE 296M.</entry> + </row> + <row> + <entry>V4L2_DV_1080P50</entry> + <entry>17</entry> + <entry>1920x1080 progressive video at 50 fps as per BT.1120.</entry> + </row> + <row> + <entry>V4L2_DV_1080P60</entry> + <entry>18</entry> + <entry>1920x1080 progressive video at 60 fps as per BT.1120.</entry> + </row> + </tbody> + </tgroup> + </table> + </refsect1> + + <refsect1> + &return-value; + + <variablelist> + <varlistentry> + <term><errorcode>EINVAL</errorcode></term> + <listitem> + <para>The &v4l2-dv-enum-preset; <structfield>index</structfield> +is out of bounds.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> +</refentry> + +<!-- +Local Variables: +mode: sgml +sgml-parent-document: "v4l2.sgml" +indent-tabs-mode: nil +End: +--> diff --git a/Documentation/DocBook/v4l/vidioc-enuminput.xml b/Documentation/DocBook/v4l/vidioc-enuminput.xml index 414856b8247..71b868e2fb8 100644 --- a/Documentation/DocBook/v4l/vidioc-enuminput.xml +++ b/Documentation/DocBook/v4l/vidioc-enuminput.xml @@ -124,7 +124,13 @@ current input.</entry> </row> <row> <entry>__u32</entry> - <entry><structfield>reserved</structfield>[4]</entry> + <entry><structfield>capabilities</structfield></entry> + <entry>This field provides capabilities for the +input. See <xref linkend="input-capabilities" /> for flags.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>reserved</structfield>[3]</entry> <entry>Reserved for future extensions. Drivers must set the array to zero.</entry> </row> @@ -261,6 +267,34 @@ flag is set Macrovision has been detected.</entry> </tbody> </tgroup> </table> + + <!-- Capability flags based on video timings RFC by Muralidharan +Karicheri, titled RFC (v1.2): V4L - Support for video timings at the +input/output interface to linux-media@vger.kernel.org on 19 Oct 2009. + --> + <table frame="none" pgwide="1" id="input-capabilities"> + <title>Input capabilities</title> + <tgroup cols="3"> + &cs-def; + <tbody valign="top"> + <row> + <entry><constant>V4L2_IN_CAP_PRESETS</constant></entry> + <entry>0x00000001</entry> + <entry>This input supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry> + </row> + <row> + <entry><constant>V4L2_OUT_CAP_CUSTOM_TIMINGS</constant></entry> + <entry>0x00000002</entry> + <entry>This input supports setting custom video timings by using VIDIOC_S_DV_TIMINGS.</entry> + </row> + <row> + <entry><constant>V4L2_IN_CAP_STD</constant></entry> + <entry>0x00000004</entry> + <entry>This input supports setting the TV standard by using VIDIOC_S_STD.</entry> + </row> + </tbody> + </tgroup> + </table> </refsect1> <refsect1> diff --git a/Documentation/DocBook/v4l/vidioc-enumoutput.xml b/Documentation/DocBook/v4l/vidioc-enumoutput.xml index e8d16dcd50c..a281d26a195 100644 --- a/Documentation/DocBook/v4l/vidioc-enumoutput.xml +++ b/Documentation/DocBook/v4l/vidioc-enumoutput.xml @@ -114,7 +114,13 @@ details on video standards and how to switch see <xref </row> <row> <entry>__u32</entry> - <entry><structfield>reserved</structfield>[4]</entry> + <entry><structfield>capabilities</structfield></entry> + <entry>This field provides capabilities for the +output. See <xref linkend="output-capabilities" /> for flags.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>reserved</structfield>[3]</entry> <entry>Reserved for future extensions. Drivers must set the array to zero.</entry> </row> @@ -147,6 +153,34 @@ CVBS, S-Video, RGB.</entry> </tgroup> </table> + <!-- Capabilities flags based on video timings RFC by Muralidharan +Karicheri, titled RFC (v1.2): V4L - Support for video timings at the +input/output interface to linux-media@vger.kernel.org on 19 Oct 2009. + --> + <table frame="none" pgwide="1" id="output-capabilities"> + <title>Output capabilities</title> + <tgroup cols="3"> + &cs-def; + <tbody valign="top"> + <row> + <entry><constant>V4L2_OUT_CAP_PRESETS</constant></entry> + <entry>0x00000001</entry> + <entry>This output supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry> + </row> + <row> + <entry><constant>V4L2_OUT_CAP_CUSTOM_TIMINGS</constant></entry> + <entry>0x00000002</entry> + <entry>This output supports setting custom video timings by using VIDIOC_S_DV_TIMINGS.</entry> + </row> + <row> + <entry><constant>V4L2_OUT_CAP_STD</constant></entry> + <entry>0x00000004</entry> + <entry>This output supports setting the TV standard by using VIDIOC_S_STD.</entry> + </row> + </tbody> + </tgroup> + </table> + </refsect1> <refsect1> &return-value; diff --git a/Documentation/DocBook/v4l/vidioc-g-dv-preset.xml b/Documentation/DocBook/v4l/vidioc-g-dv-preset.xml new file mode 100644 index 00000000000..3c6784e132f --- /dev/null +++ b/Documentation/DocBook/v4l/vidioc-g-dv-preset.xml @@ -0,0 +1,111 @@ +<refentry id="vidioc-g-dv-preset"> + <refmeta> + <refentrytitle>ioctl VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>VIDIOC_G_DV_PRESET</refname> + <refname>VIDIOC_S_DV_PRESET</refname> + <refpurpose>Query or select the DV preset of the current input or output</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcprototype> + <funcdef>int <function>ioctl</function></funcdef> + <paramdef>int <parameter>fd</parameter></paramdef> + <paramdef>int <parameter>request</parameter></paramdef> + <paramdef>&v4l2-dv-preset; +*<parameter>argp</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Arguments</title> + + <variablelist> + <varlistentry> + <term><parameter>fd</parameter></term> + <listitem> + <para>&fd;</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>request</parameter></term> + <listitem> + <para>VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para></para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + <para>To query and select the current DV preset, applications +use the <constant>VIDIOC_G_DV_PRESET</constant> and <constant>VIDIOC_S_DV_PRESET</constant> +ioctls which take a pointer to a &v4l2-dv-preset; type as argument. +Applications must zero the reserved array in &v4l2-dv-preset;. +<constant>VIDIOC_G_DV_PRESET</constant> returns a dv preset in the field +<structfield>preset</structfield> of &v4l2-dv-preset;.</para> + + <para><constant>VIDIOC_S_DV_PRESET</constant> accepts a pointer to a &v4l2-dv-preset; +that has the preset value to be set. Applications must zero the reserved array in &v4l2-dv-preset;. +If the preset is not supported, it returns an &EINVAL; </para> + </refsect1> + + <refsect1> + &return-value; + + <variablelist> + <varlistentry> + <term><errorcode>EINVAL</errorcode></term> + <listitem> + <para>This ioctl is not supported, or the +<constant>VIDIOC_S_DV_PRESET</constant>,<constant>VIDIOC_S_DV_PRESET</constant> parameter was unsuitable.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><errorcode>EBUSY</errorcode></term> + <listitem> + <para>The device is busy and therefore can not change the preset.</para> + </listitem> + </varlistentry> + </variablelist> + + <table pgwide="1" frame="none" id="v4l2-dv-preset"> + <title>struct <structname>v4l2_dv_preset</structname></title> + <tgroup cols="3"> + &cs-str; + <tbody valign="top"> + <row> + <entry>__u32</entry> + <entry><structfield>preset</structfield></entry> + <entry>Preset value to represent the digital video timings</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>reserved[4]</structfield></entry> + <entry>Reserved fields for future use</entry> + </row> + </tbody> + </tgroup> + </table> + + </refsect1> +</refentry> + +<!-- +Local Variables: +mode: sgml +sgml-parent-document: "v4l2.sgml" +indent-tabs-mode: nil +End: +--> diff --git a/Documentation/DocBook/v4l/vidioc-g-dv-timings.xml b/Documentation/DocBook/v4l/vidioc-g-dv-timings.xml new file mode 100644 index 00000000000..ecc19576bb8 --- /dev/null +++ b/Documentation/DocBook/v4l/vidioc-g-dv-timings.xml @@ -0,0 +1,224 @@ +<refentry id="vidioc-g-dv-timings"> + <refmeta> + <refentrytitle>ioctl VIDIOC_G_DV_TIMINGS, VIDIOC_S_DV_TIMINGS</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>VIDIOC_G_DV_TIMINGS</refname> + <refname>VIDIOC_S_DV_TIMINGS</refname> + <refpurpose>Get or set custom DV timings for input or output</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcprototype> + <funcdef>int <function>ioctl</function></funcdef> + <paramdef>int <parameter>fd</parameter></paramdef> + <paramdef>int <parameter>request</parameter></paramdef> + <paramdef>&v4l2-dv-timings; +*<parameter>argp</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Arguments</title> + + <variablelist> + <varlistentry> + <term><parameter>fd</parameter></term> + <listitem> + <para>&fd;</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>request</parameter></term> + <listitem> + <para>VIDIOC_G_DV_TIMINGS, VIDIOC_S_DV_TIMINGS</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para></para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + <para>To set custom DV timings for the input or output, applications use the +<constant>VIDIOC_S_DV_TIMINGS</constant> ioctl and to get the current custom timings, +applications use the <constant>VIDIOC_G_DV_TIMINGS</constant> ioctl. The detailed timing +information is filled in using the structure &v4l2-dv-timings;. These ioctls take +a pointer to the &v4l2-dv-timings; structure as argument. If the ioctl is not supported +or the timing values are not correct, the driver returns &EINVAL;.</para> + </refsect1> + + <refsect1> + &return-value; + + <variablelist> + <varlistentry> + <term><errorcode>EINVAL</errorcode></term> + <listitem> + <para>This ioctl is not supported, or the +<constant>VIDIOC_S_DV_TIMINGS</constant> parameter was unsuitable.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><errorcode>EBUSY</errorcode></term> + <listitem> + <para>The device is busy and therefore can not change the timings.</para> + </listitem> + </varlistentry> + </variablelist> + + <table pgwide="1" frame="none" id="v4l2-bt-timings"> + <title>struct <structname>v4l2_bt_timings</structname></title> + <tgroup cols="3"> + &cs-str; + <tbody valign="top"> + <row> + <entry>__u32</entry> + <entry><structfield>width</structfield></entry> + <entry>Width of the active video in pixels</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>height</structfield></entry> + <entry>Height of the active video in lines</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>interlaced</structfield></entry> + <entry>Progressive (0) or interlaced (1)</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>polarities</structfield></entry> + <entry>This is a bit mask that defines polarities of sync signals. +bit 0 (V4L2_DV_VSYNC_POS_POL) is for vertical sync polarity and bit 1 (V4L2_DV_HSYNC_POS_POL) is for horizontal sync polarity. If the bit is set +(1) it is positive polarity and if is cleared (0), it is negative polarity.</entry> + </row> + <row> + <entry>__u64</entry> + <entry><structfield>pixelclock</structfield></entry> + <entry>Pixel clock in Hz. Ex. 74.25MHz->74250000</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>hfrontporch</structfield></entry> + <entry>Horizontal front porch in pixels</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>hsync</structfield></entry> + <entry>Horizontal sync length in pixels</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>hbackporch</structfield></entry> + <entry>Horizontal back porch in pixels</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>vfrontporch</structfield></entry> + <entry>Vertical front porch in lines</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>vsync</structfield></entry> + <entry>Vertical sync length in lines</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>vbackporch</structfield></entry> + <entry>Vertical back porch in lines</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>il_vfrontporch</structfield></entry> + <entry>Vertical front porch in lines for bottom field of interlaced field formats</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>il_vsync</structfield></entry> + <entry>Vertical sync length in lines for bottom field of interlaced field formats</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>il_vbackporch</structfield></entry> + <entry>Vertical back porch in lines for bottom field of interlaced field formats</entry> + </row> + </tbody> + </tgroup> + </table> + + <table pgwide="1" frame="none" id="v4l2-dv-timings"> + <title>struct <structname>v4l2_dv_timings</structname></title> + <tgroup cols="4"> + &cs-str; + <tbody valign="top"> + <row> + <entry>__u32</entry> + <entry><structfield>type</structfield></entry> + <entry></entry> + <entry>Type of DV timings as listed in <xref linkend="dv-timing-types"/>.</entry> + </row> + <row> + <entry>union</entry> + <entry><structfield></structfield></entry> + <entry></entry> + </row> + <row> + <entry></entry> + <entry>&v4l2-bt-timings;</entry> + <entry><structfield>bt</structfield></entry> + <entry>Timings defined by BT.656/1120 specifications</entry> + </row> + <row> + <entry></entry> + <entry>__u32</entry> + <entry><structfield>reserved</structfield>[32]</entry> + <entry></entry> + </row> + </tbody> + </tgroup> + </table> + + <table pgwide="1" frame="none" id="dv-timing-types"> + <title>DV Timing types</title> + <tgroup cols="3"> + &cs-str; + <tbody valign="top"> + <row> + <entry>Timing type</entry> + <entry>value</entry> + <entry>Description</entry> + </row> + <row> + <entry></entry> + <entry></entry> + <entry></entry> + </row> + <row> + <entry>V4L2_DV_BT_656_1120</entry> + <entry>0</entry> + <entry>BT.656/1120 timings</entry> + </row> + </tbody> + </tgroup> + </table> + </refsect1> +</refentry> + +<!-- +Local Variables: +mode: sgml +sgml-parent-document: "v4l2.sgml" +indent-tabs-mode: nil +End: +--> diff --git a/Documentation/DocBook/v4l/vidioc-g-std.xml b/Documentation/DocBook/v4l/vidioc-g-std.xml index b6f5d267e85..912f8513e5d 100644 --- a/Documentation/DocBook/v4l/vidioc-g-std.xml +++ b/Documentation/DocBook/v4l/vidioc-g-std.xml @@ -86,6 +86,12 @@ standards.</para> <constant>VIDIOC_S_STD</constant> parameter was unsuitable.</para> </listitem> </varlistentry> + <varlistentry> + <term><errorcode>EBUSY</errorcode></term> + <listitem> + <para>The device is busy and therefore can not change the standard</para> + </listitem> + </varlistentry> </variablelist> </refsect1> </refentry> diff --git a/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml b/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml new file mode 100644 index 00000000000..87e4f0f6151 --- /dev/null +++ b/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml @@ -0,0 +1,85 @@ +<refentry id="vidioc-query-dv-preset"> + <refmeta> + <refentrytitle>ioctl VIDIOC_QUERY_DV_PRESET</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>VIDIOC_QUERY_DV_PRESET</refname> + <refpurpose>Sense the DV preset received by the current +input</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcprototype> + <funcdef>int <function>ioctl</function></funcdef> + <paramdef>int <parameter>fd</parameter></paramdef> + <paramdef>int <parameter>request</parameter></paramdef> + <paramdef>&v4l2-dv-preset; *<parameter>argp</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Arguments</title> + + <variablelist> + <varlistentry> + <term><parameter>fd</parameter></term> + <listitem> + <para>&fd;</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>request</parameter></term> + <listitem> + <para>VIDIOC_QUERY_DV_PRESET</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para></para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + + <para>The hardware may be able to detect the current DV preset +automatically, similar to sensing the video standard. To do so, applications +call <constant> VIDIOC_QUERY_DV_PRESET</constant> with a pointer to a +&v4l2-dv-preset; type. Once the hardware detects a preset, that preset is +returned in the preset field of &v4l2-dv-preset;. When detection is not +possible or fails, the value V4L2_DV_INVALID is returned.</para> + </refsect1> + + <refsect1> + &return-value; + <variablelist> + <varlistentry> + <term><errorcode>EINVAL</errorcode></term> + <listitem> + <para>This ioctl is not supported.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><errorcode>EBUSY</errorcode></term> + <listitem> + <para>The device is busy and therefore can not sense the preset</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> +</refentry> + +<!-- +Local Variables: +mode: sgml +sgml-parent-document: "v4l2.sgml" +indent-tabs-mode: nil +End: +--> diff --git a/Documentation/DocBook/v4l/vidioc-querystd.xml b/Documentation/DocBook/v4l/vidioc-querystd.xml index b5a7ff93448..1a9e6039309 100644 --- a/Documentation/DocBook/v4l/vidioc-querystd.xml +++ b/Documentation/DocBook/v4l/vidioc-querystd.xml @@ -70,6 +70,12 @@ current video input or output.</para> <para>This ioctl is not supported.</para> </listitem> </varlistentry> + <varlistentry> + <term><errorcode>EBUSY</errorcode></term> + <listitem> + <para>The device is busy and therefore can not detect the standard</para> + </listitem> + </varlistentry> </variablelist> </refsect1> </refentry> |