]> rtime.felk.cvut.cz Git - linux-imx.git/blob - kernel/printk/braille.c
Merge tag 'vfio-v3.11-rc4' of git://github.com/awilliam/linux-vfio
[linux-imx.git] / kernel / printk / braille.c
1 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
2
3 #include <linux/kernel.h>
4 #include <linux/console.h>
5 #include <linux/string.h>
6
7 #include "console_cmdline.h"
8 #include "braille.h"
9
10 char *_braille_console_setup(char **str, char **brl_options)
11 {
12         if (!memcmp(*str, "brl,", 4)) {
13                 *brl_options = "";
14                 *str += 4;
15         } else if (!memcmp(str, "brl=", 4)) {
16                 *brl_options = *str + 4;
17                 *str = strchr(*brl_options, ',');
18                 if (!*str)
19                         pr_err("need port name after brl=\n");
20                 else
21                         *((*str)++) = 0;
22         }
23
24         return *str;
25 }
26
27 int
28 _braille_register_console(struct console *console, struct console_cmdline *c)
29 {
30         int rtn = 0;
31
32         if (c->brl_options) {
33                 console->flags |= CON_BRL;
34                 rtn = braille_register_console(console, c->index, c->options,
35                                                c->brl_options);
36         }
37
38         return rtn;
39 }
40
41 int
42 _braille_unregister_console(struct console *console)
43 {
44         if (console->flags & CON_BRL)
45                 return braille_unregister_console(console);
46
47         return 0;
48 }