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baum: better document usb-braille configuration 

Samuel Thibault (1):
   usb-braille: Better explain that one also has to create a chardev
     backend
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Merge tag 'samuel-thibault' of https://people.debian.org/~sthibault/qemu into staging

baum: better document usb-braille configuration

Samuel Thibault (1):
  usb-braille: Better explain that one also has to create a chardev
    backend

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# gpg: Signature made Mon 05 Sep 2022 18:16:53 EDT
# gpg:                using RSA key 653485D4830E006C13EF59FF6874CE58AE2D7E3F
# gpg: Good signature from "Samuel Thibault <samuel.thibault@ens-lyon.org>" [full]
# gpg:                 aka "Samuel Thibault <sthibault@debian.org>" [full]
# gpg:                 aka "Samuel Thibault <samuel.thibault@gnu.org>" [unknown]
# gpg:                 aka "Samuel Thibault <samuel.thibault@inria.fr>" [full]
# gpg:                 aka "Samuel Thibault <samuel.thibault@labri.fr>" [full]
# gpg:                 aka "Samuel Thibault <samuel.thibault@u-bordeaux.fr>" [unknown]
# gpg:                 aka "Samuel Thibault <samuel.thibault@aquilenet.fr>" [unknown]
# gpg:                 aka "Samuel Thibault <sthibault@hypra.fr>" [unknown]
# Primary key fingerprint: 900C B024 B679 31D4 0F82  304B D017 8C76 7D06 9EE6
#      Subkey fingerprint: 6534 85D4 830E 006C 13EF  59FF 6874 CE58 AE2D 7E3F

* tag 'samuel-thibault' of https://people.debian.org/~sthibault/qemu:
  usb-braille: Better explain that one also has to create a chardev backend

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2022-09-06 08:31:24 -04:00
parent b34b42f1b6 3e01455edd
commit 946e9bccf1
1 changed files with 14 additions and 2 deletions
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16
docs/system/devices/usb.rst
View File

@ -178,8 +178,20 @@ option or the ``device_add`` monitor command. Available devices are:
host character device id.
``usb-braille,chardev=id``
Braille device. This will use BrlAPI to display the braille output on
a real or fake device referenced by id.
Braille device. This emulates a Baum Braille device USB port. id has to
specify a character device defined with ``-chardev …,id=id``. One will
normally use BrlAPI to display the braille output on a BRLTTY-supported
device with
.. parsed-literal::
|qemu_system| [...] -chardev braille,id=brl -device usb-braille,chardev=brl
or alternatively, use the following equivalent shortcut:
.. parsed-literal::
|qemu_system| [...] -usbdevice braille
``usb-net[,netdev=id]``
Network adapter that supports CDC ethernet and RNDIS protocols. id