1 // SPDX-License-Identifier: GPL-2.0
2 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
3
4 #include <linux/kernel.h>
5 #include <linux/console.h>
6 #include <linux/errno.h>
7 #include <linux/string.h>
8
9 #include "console_cmdline.h"
10 #include "braille.h"
11
12 int _braille_console_setup(char **str, char **brl_options)
13 {
14 size_t len;
15
16 len = str_has_prefix(*str, "brl,");
17 if (len) {
18 *brl_options = "";
19 *str += len;
20 return 0;
21 }
22
23 len = str_has_prefix(*str, "brl=");
24 if (len) {
25 *brl_options = *str + len;
26 *str = strchr(*brl_options, ',');
27 if (!*str) {
28 pr_err("need port name after brl=\n");
29 return -EINVAL;
30 }
31 *((*str)++) = 0;
32 }
33
34 return 0;
35 }
36
37 int
38 _braille_register_console(struct console *console, struct console_cmdline *c)
39 {
40 int rtn = 0;
41
42 if (c->brl_options) {
43 console->flags |= CON_BRL;
44 rtn = braille_register_console(console, c->index, c->options,
45 c->brl_options);
46 }
47
48 return rtn;
49 }
50
51 int
52 _braille_unregister_console(struct console *console)
53 {
54 if (console->flags & CON_BRL)
55 return braille_unregister_console(console);
56
57 return 0;
58 }
59
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