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Input: keyboard - simplify emulate_raw() implementation

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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov 2006-07-19 01:14:25 -04:00
parent 2b192908b8
commit 896cdc7b80
1 changed files with 34 additions and 17 deletions
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51
drivers/char/keyboard.c
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@ -1025,7 +1025,7 @@ static const unsigned short x86_keycodes[256] =
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
284,285,309,298,312, 91,327,328,329,331,333,335,336,337,338,339,
284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
103,104,105,275,287,279,306,106,274,107,294,364,358,363,362,361,
@ -1047,38 +1047,55 @@ extern void sun_do_break(void);
static int emulate_raw(struct vc_data *vc, unsigned int keycode,
unsigned char up_flag)
{
if (keycode > 255 || !x86_keycodes[keycode])
return -1;
int code;
switch (keycode) {
case KEY_PAUSE:
put_queue(vc, 0xe1);
put_queue(vc, 0x1d | up_flag);
put_queue(vc, 0x45 | up_flag);
return 0;
break;
case KEY_HANGEUL:
if (!up_flag)
put_queue(vc, 0xf2);
return 0;
break;
case KEY_HANJA:
if (!up_flag)
put_queue(vc, 0xf1);
return 0;
}
break;
if (keycode == KEY_SYSRQ && sysrq_alt) {
put_queue(vc, 0x54 | up_flag);
return 0;
}
case KEY_SYSRQ:
/*
* Real AT keyboards (that's what we're trying
* to emulate here emit 0xe0 0x2a 0xe0 0x37 when
* pressing PrtSc/SysRq alone, but simply 0x54
* when pressing Alt+PrtSc/SysRq.
*/
if (sysrq_alt) {
put_queue(vc, 0x54 | up_flag);
} else {
put_queue(vc, 0xe0);
put_queue(vc, 0x2a | up_flag);
put_queue(vc, 0xe0);
put_queue(vc, 0x37 | up_flag);
}
break;
if (x86_keycodes[keycode] & 0x100)
put_queue(vc, 0xe0);
default:
if (keycode > 255)
return -1;
put_queue(vc, (x86_keycodes[keycode] & 0x7f) | up_flag);
code = x86_keycodes[keycode];
if (!code)
return -1;
if (keycode == KEY_SYSRQ) {
put_queue(vc, 0xe0);
put_queue(vc, 0x37 | up_flag);
if (code & 0x100)
put_queue(vc, 0xe0);
put_queue(vc, (code & 0x7f) | up_flag);
break;
}
return 0;