diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-30 00:08:53 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-30 00:08:53 -0700 |
commit | 664a41b8a91bf78a01a751e15175e0008977685a (patch) | |
tree | d9dc15c83400ad2dfb430ff27ae3e7fdc9395856 /Documentation/DocBook/media/v4l/media-ioc-setup-link.xml | |
parent | 983236b5741e557451f3ed4ec5ebf1f62a5b2c15 (diff) | |
parent | ee2ce3a0b43d14d792d34cf88e7bc2091096744b (diff) |
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (430 commits)
[media] ir-mce_kbd-decoder: include module.h for its facilities
[media] ov5642: include module.h for its facilities
[media] em28xx: Fix DVB-C maxsize for em2884
[media] tda18271c2dd: Fix saw filter configuration for DVB-C @6MHz
[media] v4l: mt9v032: Fix Bayer pattern
[media] V4L: mt9m111: rewrite set_pixfmt
[media] V4L: mt9m111: fix missing return value check mt9m111_reg_clear
[media] V4L: initial driver for ov5642 CMOS sensor
[media] V4L: sh_mobile_ceu_camera: fix Oops when USERPTR mapping fails
[media] V4L: soc-camera: remove soc-camera bus and devices on it
[media] V4L: soc-camera: un-export the soc-camera bus
[media] V4L: sh_mobile_csi2: switch away from using the soc-camera bus notifier
[media] V4L: add media bus configuration subdev operations
[media] V4L: soc-camera: group struct field initialisations together
[media] V4L: soc-camera: remove now unused soc-camera specific PM hooks
[media] V4L: pxa-camera: switch to using standard PM hooks
[media] NetUP Dual DVB-T/C CI RF: force card hardware revision by module param
[media] Don't OOPS if videobuf_dvb_get_frontend return NULL
[media] NetUP Dual DVB-T/C CI RF: load firmware according card revision
[media] omap3isp: Support configurable HS/VS polarities
...
Fix up conflicts:
- arch/arm/mach-omap2/board-rx51-peripherals.c:
cleanup regulator supply definitions in mach-omap2
vs
OMAP3: RX-51: define vdds_csib regulator supply
- drivers/staging/tm6000/tm6000-alsa.c (trivial)
Diffstat (limited to 'Documentation/DocBook/media/v4l/media-ioc-setup-link.xml')
-rw-r--r-- | Documentation/DocBook/media/v4l/media-ioc-setup-link.xml | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/Documentation/DocBook/media/v4l/media-ioc-setup-link.xml b/Documentation/DocBook/media/v4l/media-ioc-setup-link.xml new file mode 100644 index 00000000000..fc2e522ee65 --- /dev/null +++ b/Documentation/DocBook/media/v4l/media-ioc-setup-link.xml @@ -0,0 +1,84 @@ +<refentry id="media-ioc-setup-link"> + <refmeta> + <refentrytitle>ioctl MEDIA_IOC_SETUP_LINK</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>MEDIA_IOC_SETUP_LINK</refname> + <refpurpose>Modify the properties of a link</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 media_link_desc *<parameter>argp</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Arguments</title> + + <variablelist> + <varlistentry> + <term><parameter>fd</parameter></term> + <listitem> + <para>File descriptor returned by + <link linkend='media-func-open'><function>open()</function></link>.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>request</parameter></term> + <listitem> + <para>MEDIA_IOC_SETUP_LINK</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para></para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + + <para>To change link properties applications fill a &media-link-desc; with + link identification information (source and sink pad) and the new requested + link flags. They then call the MEDIA_IOC_SETUP_LINK ioctl with a pointer to + that structure.</para> + <para>The only configurable property is the <constant>ENABLED</constant> + link flag to enable/disable a link. Links marked with the + <constant>IMMUTABLE</constant> link flag can not be enabled or disabled. + </para> + <para>Link configuration has no side effect on other links. If an enabled + link at the sink pad prevents the link from being enabled, the driver + returns with an &EBUSY;.</para> + <para>Only links marked with the <constant>DYNAMIC</constant> link flag can + be enabled/disabled while streaming media data. Attempting to enable or + disable a streaming non-dynamic link will return an &EBUSY;.</para> + <para>If the specified link can't be found the driver returns with an + &EINVAL;.</para> + </refsect1> + + <refsect1> + &return-value; + + <variablelist> + <varlistentry> + <term><errorcode>EINVAL</errorcode></term> + <listitem> + <para>The &media-link-desc; references a non-existing link, or the + link is immutable and an attempt to modify its configuration was made. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> +</refentry> |