From bbeddf52adc1b4207674ab88686cbbe58c24f721 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 31 Jul 2013 13:53:45 -0700 Subject: printk: move braille console support into separate braille.[ch] files Create files with prototypes and static inlines for braille support. Make braille_console functions return 1 on success. Corrected CONFIG_A11Y_BRAILLE_CONSOLE=n _braille_console_setup return value to NULL. Signed-off-by: Joe Perches Reviewed-by: Samuel Thibault Cc: Ming Lei Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/printk/braille.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 kernel/printk/braille.c (limited to 'kernel/printk/braille.c') diff --git a/kernel/printk/braille.c b/kernel/printk/braille.c new file mode 100644 index 000000000000..b51087fb9ace --- /dev/null +++ b/kernel/printk/braille.c @@ -0,0 +1,48 @@ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include + +#include "console_cmdline.h" +#include "braille.h" + +char *_braille_console_setup(char **str, char **brl_options) +{ + if (!memcmp(*str, "brl,", 4)) { + *brl_options = ""; + *str += 4; + } else if (!memcmp(str, "brl=", 4)) { + *brl_options = *str + 4; + *str = strchr(*brl_options, ','); + if (!*str) + pr_err("need port name after brl=\n"); + else + *((*str)++) = 0; + } + + return *str; +} + +int +_braille_register_console(struct console *console, struct console_cmdline *c) +{ + int rtn = 0; + + if (c->brl_options) { + console->flags |= CON_BRL; + rtn = braille_register_console(console, c->index, c->options, + c->brl_options); + } + + return rtn; +} + +int +_braille_unregister_console(struct console *console) +{ + if (console->flags & CON_BRL) + return braille_unregister_console(console); + + return 0; +} -- cgit v1.2.3