Basic braille screen reader support

This adds a minimalistic braille screen reader support.  This is meant to
be used by blind people e.g.  on boot failures or when / cannot be mounted
etc and thus the userland screen readers can not work.

[[email protected]: fix exports]
Signed-off-by: Samuel Thibault <[email protected]>
Cc: Jiri Kosina <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Acked-by: Alan Cox <[email protected]>
Cc: Randy Dunlap <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Samuel Thibault 2008-04-30 00:54:51 -07:00 • committed by Linus Torvalds
commit f7511d5f66
15 changed files with 538 additions and 30 deletions

View file

@ -496,6 +496,11 @@ and is between 256 and 4096 characters. It is defined in the file
switching to the matching ttyS device later. The
options are the same as for ttyS, above.
If the device connected to the port is not a TTY but a braille
device, prepend "brl," before the device type, for instance
console=brl,ttyS0
For now, only VisioBraille is supported.
earlycon= [KNL] Output early console device and options.
uart[8250],io,<addr>[,options]
uart[8250],mmio,<addr>[,options]