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Add mediumraw support to the linux kdrive driver

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Signed-off-by: Daniel Stone <daniel@fooishbar.org>
This commit is contained in:
Ross Burton 2008-04-22 18:05:53 +01:00
parent 455383db95
commit c4fd112153
1 changed files with 25 additions and 1 deletions
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26
hw/kdrive/linux/keyboard.c
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@ -42,6 +42,8 @@
#include <sys/ioctl.h>
extern int LinuxConsoleFd;
static unsigned char mediumraw_data, mediumraw_up;
static enum { DEFAULT, EXTBYTE1, EXTBYTE2 } mediumraw_state = DEFAULT;
static const KeySym linux_to_x[256] = {
NoSymbol, NoSymbol, NoSymbol, NoSymbol,
@ -701,7 +703,29 @@ LinuxKeyboardRead (int fd, void *closure)
else
#endif
scancode = b[0] & 0x7f;
KdEnqueueKeyboardEvent (closure, scancode, b[0] & 0x80);
/* This is extended medium raw mode interpreter
see linux/drivers/keyboard.c (kbd->kbdmode == VC_MEDIUMRAW) */
switch (mediumraw_state)
{
case DEFAULT:
if (scancode == 0)
{
mediumraw_state = EXTBYTE1;
mediumraw_up = b[0] & 0x80;
}
else
KdEnqueueKeyboardEvent (closure, scancode, b[0] & 0x80);
break;
case EXTBYTE1:
mediumraw_data = scancode;
mediumraw_state = EXTBYTE2;
break;
case EXTBYTE2:
/* Note: Only codes < 256 will pass correctly through KdEnqueueKeyboardEvent() */
KdEnqueueKeyboardEvent (closure, (int)mediumraw_data << 7 | scancode, mediumraw_up);
mediumraw_state = DEFAULT;
break;
}
b++;
}
}