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ps2keymap.c
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#include "ps2keymap.h"
#include <linux/input-event-codes.h>
uint16_t ps2keymap_press[] = {
/* KEY_RESERVED */ 0x00,
/* KEY_ESC */ 0x76,
/* KEY_1 */ 0x16,
/* KEY_2 */ 0x1e,
/* KEY_3 */ 0x26,
/* KEY_4 */ 0x25,
/* KEY_5 */ 0x2e,
/* KEY_6 */ 0x36,
/* KEY_7 */ 0x3d,
/* KEY_8 */ 0x3e,
/* KEY_9 */ 0x46,
/* KEY_0 */ 0x45,
/* KEY_MINUS */ 0x4e,
/* KEY_EQUAL */ 0x55,
/* KEY_BACKSPACE */ 0x66,
/* KEY_TAB */ 0x0d,
/* KEY_Q */ 0x15,
/* KEY_W */ 0x1d,
/* KEY_E */ 0x24,
/* KEY_R */ 0x2d,
/* KEY_T */ 0x2c,
/* KEY_Y */ 0x35,
/* KEY_U */ 0x3c,
/* KEY_I */ 0x43,
/* KEY_O */ 0x44,
/* KEY_P */ 0x4d,
/* KEY_LEFTBRACE */ 0x54,
/* KEY_RIGHTBRACE */ 0x5b,
/* KEY_ENTER */ 0x5a,
/* KEY_LEFTCTRL */ 0x14,
/* KEY_A */ 0x1c,
/* KEY_S */ 0x1b,
/* KEY_D */ 0x23,
/* KEY_F */ 0x2b,
/* KEY_G */ 0x34,
/* KEY_H */ 0x33,
/* KEY_J */ 0x3b,
/* KEY_K */ 0x42,
/* KEY_L */ 0x4b,
/* KEY_SEMICOLON */ 0x4c,
/* KEY_APOSTROPHE */ 0x52,
/* KEY_GRAVE */ 0x0e,
/* KEY_LEFTSHIFT */ 0x12,
/* KEY_BACKSLASH */ 0x5d,
/* KEY_Z */ 0x1a,
/* KEY_X */ 0x22,
/* KEY_C */ 0x21,
/* KEY_V */ 0x2a,
/* KEY_B */ 0x32,
/* KEY_N */ 0x31,
/* KEY_M */ 0x3a,
/* KEY_COMMA */ 0x41,
/* KEY_DOT */ 0x49,
/* KEY_SLASH */ 0x4a,
/* KEY_RIGHTSHIFT */ 0x59,
/* KEY_KPASTERISK */ 0x7c,
/* KEY_LEFTALT */ 0x11,
/* KEY_SPACE */ 0x29,
/* KEY_CAPSLOCK */ 0x58,
/* KEY_F1 */ 0x05,
/* KEY_F2 */ 0x06,
/* KEY_F3 */ 0x04,
/* KEY_F4 */ 0x0c,
/* KEY_F5 */ 0x03,
/* KEY_F6 */ 0x0b,
/* KEY_F7 */ 0x83,
/* KEY_F8 */ 0x0a,
/* KEY_F9 */ 0x01,
/* KEY_F10 */ 0x09,
/* KEY_NUMLOCK */ 0x77,
/* KEY_SCROLLLOCK */ 0x7e,
/* KEY_KP7 */ 0x6c,
/* KEY_KP8 */ 0x75,
/* KEY_KP9 */ 0x7d,
/* KEY_KPMINUS */ 0x7b,
/* KEY_KP4 */ 0x6b,
/* KEY_KP5 */ 0x73,
/* KEY_KP6 */ 0x74,
/* KEY_KPPLUS */ 0x79,
/* KEY_KP1 */ 0x69,
/* KEY_KP2 */ 0x72,
/* KEY_KP3 */ 0x7a,
/* KEY_KP0 */ 0x70,
/* KEY_KPDOT */ 0x71,
/* KEY_ZENKAKUHANKAKU */ 0x00,
/* KEY_102ND */ 0x00,
/* KEY_F11 */ 0x78,
/* KEY_F12 */ 0x07,
/* KEY_RO */ 0x00,
/* KEY_KATAKANA */ 0x00,
/* KEY_HIRAGANA */ 0x00,
/* KEY_HENKAN */ 0x00,
/* KEY_KATAKANAHIRAGANA */ 0x00,
/* KEY_MUHENKAN */ 0x00,
/* KEY_KPJPCOMMA */ 0x00,
/* KEY_KPENTER */ 0xe05a,
/* KEY_RIGHTCTRL */ 0xe014,
/* KEY_KPSLASH */ 0xe04a,
/* KEY_SYSRQ */ 0x00,
/* KEY_RIGHTALT */ 0xe011,
/* KEY_LINEFEED */ 0x00,
/* KEY_HOME */ 0xe06c,
/* KEY_UP */ 0xe075,
/* KEY_PAGEUP */ 0xe07d,
/* KEY_LEFT */ 0xe06b,
/* KEY_RIGHT */ 0xe074,
/* KEY_END */ 0xe069,
/* KEY_DOWN */ 0xe072,
/* KEY_PAGEDOWN */ 0xe07a,
/* KEY_INSERT */ 0xe070,
/* KEY_DELETE */ 0xe071,
/* KEY_MACRO */ 0x00,
/* KEY_MUTE */ 0xe023,
/* KEY_VOLUMEDOWN */ 0xe021,
/* KEY_VOLUMEUP */ 0xe032,
/* KEY_POWER */ 0xe05e,
/* KEY_KPEQUAL */ 0x00,
/* KEY_KPPLUSMINUS */ 0x00,
/* KEY_PAUSE */ 0x00,
/* KEY_SCALE */ 0x00,
/* KEY_KPCOMMA */ 0x00,
/* KEY_HANGEUL */ 0x00,
/* KEY_HANGUEL */ 0x00,
/* KEY_HANJA */ 0x00,
/* KEY_YEN */ 0x00,
/* KEY_LEFTMETA */ 0xe01f,
/* KEY_RIGHTMETA */ 0xe027,
/* KEY_COMPOSE */ 0x00
};
int _ps2keymap_get_press_bytes(int key)
{
if (key == KEY_SYSRQ)
return 4;
else if (key == KEY_PAUSE)
return 8;
if (!ps2keymap_has_key(key))
return 0;
uint16_t press = ps2keymap_press[key];
if ((press & 0xff00) >> 8 == 0xe0)
return 2;
return 1;
}
int _ps2keymap_get_break_bytes(int key)
{
if (key == KEY_SYSRQ)
return 6;
if (!ps2keymap_has_key(key))
return 0;
uint16_t press = ps2keymap_press[key];
if ((press & 0xff00) >> 8 == 0xe0)
return 3;
return 2;
}
int ps2keymap_has_key(int key)
{
// Has special implementation
if (key == KEY_SYSRQ || key == KEY_PAUSE)
return 1;
// Unimplemented
if (key > KEY_COMPOSE)
return 0;
if (ps2keymap_press[key] == 0x00)
return 0;
return 1;
}
int ps2keymap_get_press(int key, int size, void* out)
{
if (!ps2keymap_has_key(key))
return -2;
int bytes = _ps2keymap_get_press_bytes(key);
if (bytes < 0)
return -1;
if (bytes > size)
return -3;
char* write = out;
if (key == KEY_SYSRQ)
{
*(write++) = 0xe0;
*(write++) = 0x12;
*(write++) = 0xe0;
*(write++) = 0x7c;
}
else if (key == KEY_PAUSE)
{
*(write++) = 0xe0;
*(write++) = 0x14;
*(write++) = 0x77;
*(write++) = 0xe1;
*(write++) = 0xf0;
*(write++) = 0x14;
*(write++) = 0xe0;
*(write++) = 0x77;
}
else
{
int press = ps2keymap_press[key];
for (int i = bytes; i > 0; --i)
{
*(write++) = (char)((press >> (8 * (i-1))) & 0xff);
}
}
return bytes;
}
int ps2keymap_get_break(int key, int size, void* out)
{
if (!ps2keymap_has_key(key))
return -2;
if (key == KEY_PAUSE)
return -1;
int bytes = _ps2keymap_get_break_bytes(key);
if (bytes < 0)
return -1;
if (bytes > size)
return -3;
char* write = out;
if (key == KEY_SYSRQ)
{
*(write++) = 0xe0;
*(write++) = 0xf0;
*(write++) = 0x7c;
*(write++) = 0xe0;
*(write++) = 0xf0;
*(write++) = 0x12;
}
else
{
int press = ps2keymap_press[key];
if ((press & 0xff00) >> 8 == 0xe0)
*(write++) = (char)(0xe0);
*(write++) = (char)(0xf0);
*(write++) = (char)(press & 0xff);
}
return bytes;
}