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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2016-07-17 11:34:58 -0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-07-17 14:02:45 -0300
commitfcbf5ca0b870c26e1c2d89a31c87e65d952dc253 (patch)
treebcc2cb87dfafc4e36b146d1fa08dcf5f4028edf1 /Documentation/dvb/udev.txt
parentd2f019851a404d71f6581b62b721f0b8222c3521 (diff)
[media] doc-rst: move DVB avulse docs to Documentation/media
There are several documentation stuff under Documentation/dvb. Move them to Documentation/media/dvb-drivers and rename them to rst, as they'll soon be converted to rst files. No changes at the documentation. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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-The DVB subsystem currently registers to the sysfs subsystem using the
-"class_simple" interface.
-
-This means that only the basic information like module loading parameters
-are presented through sysfs. Other things that might be interesting are
-currently *not* available.
-
-Nevertheless it's now possible to add proper udev rules so that the
-DVB device nodes are created automatically.
-
-We assume that you have udev already up and running and that have been
-creating the DVB device nodes manually up to now due to the missing sysfs
-support.
-
-0. Don't forget to disable your current method of creating the
-device nodes manually.
-
-1. Unfortunately, you'll need a helper script to transform the kernel
-sysfs device name into the well known dvb adapter / device naming scheme.
-The script should be called "dvb.sh" and should be placed into a script
-dir where udev can execute it, most likely /etc/udev/scripts/
-
-So, create a new file /etc/udev/scripts/dvb.sh and add the following:
-------------------------------schnipp------------------------------------------------
-#!/bin/sh
-/bin/echo $1 | /bin/sed -e 's,dvb\([0-9]\)\.\([^0-9]*\)\([0-9]\),dvb/adapter\1/\2\3,'
-------------------------------schnipp------------------------------------------------
-
-Don't forget to make the script executable with "chmod".
-
-1. You need to create a proper udev rule that will create the device nodes
-like you know them. All real distributions out there scan the /etc/udev/rules.d
-directory for rule files. The main udev configuration file /etc/udev/udev.conf
-will tell you the directory where the rules are, most likely it's /etc/udev/rules.d/
-
-Create a new rule file in that directory called "dvb.rule" and add the following line:
-------------------------------schnipp------------------------------------------------
-KERNEL="dvb*", PROGRAM="/etc/udev/scripts/dvb.sh %k", NAME="%c"
-------------------------------schnipp------------------------------------------------
-
-If you want more control over the device nodes (for example a special group membership)
-have a look at "man udev".
-
-For every device that registers to the sysfs subsystem with a "dvb" prefix,
-the helper script /etc/udev/scripts/dvb.sh is invoked, which will then
-create the proper device node in your /dev/ directory.