diff options
Diffstat (limited to 'qemu/roms/openbios/drivers/kbd.c')
| -rw-r--r-- | qemu/roms/openbios/drivers/kbd.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/qemu/roms/openbios/drivers/kbd.c b/qemu/roms/openbios/drivers/kbd.c new file mode 100644 index 000000000..43070d877 --- /dev/null +++ b/qemu/roms/openbios/drivers/kbd.c @@ -0,0 +1,116 @@ +/* + * <kbd.c> + * + * Open Hack'Ware BIOS generic keyboard input translation. + * + * Copyright (c) 2005 Jocelyn Mayer + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License V2 + * as published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA + */ + +#include "config.h" +#include "libc/string.h" +#include "asm/types.h" +#include "kbd.h" + +//#define DEBUG_KBD +#ifdef DEBUG_KBD +#define KBD_DPRINTF(fmt, args...) \ +do { printk("KBD - %s: " fmt, __func__ , ##args); } while (0) +#else +#define KBD_DPRINTF(fmt, args...) do { } while (0) +#endif + +int kbd_set_keymap (kbd_t *kbd, int nb_keys, const keymap_t *keymap, const char **sequences) +{ + kbd->nb_keys = nb_keys; + kbd->keymap = keymap; + kbd->sequences = sequences; + + return 0; +} + +int kbd_translate_key (kbd_t *kbd, int keycode, int up_down, char *sequence) +{ + const keymap_t *keyt; + int mod_state, key, type; + int ret; + + ret = -1; + /* Get key table */ + if (keycode < kbd->nb_keys) { + keyt = &kbd->keymap[keycode]; + /* Get modifier state */ + mod_state = (kbd->mod_state | (kbd->mod_state >> 8)) & 0xFF; + /* Adjust with lock */ + if (keyt->lck_shift >= 0) { + if ((kbd->mod_state >> (16 + keyt->lck_shift)) & 0x01) { + KBD_DPRINTF("adjust with lock %02x => %02x (%d %08x)\n", + mod_state, + mod_state ^ ((kbd->mod_state >> + (16 + keyt->lck_shift)) & + 0x01), + keyt->lck_shift, kbd->mod_state); + } + mod_state ^= (kbd->mod_state >> (16 + keyt->lck_shift)) & 0x01; + } + key = keyt->trans[mod_state]; + type = key & 0xFF000000; + key &= ~0xFF000000; + switch (type) { + case KBD_TYPE_REGULAR: + if (!up_down) { + /* We don't care about up events on "normal" keys */ + *sequence = key; + ret = 1; + } + break; + case KBD_TYPE_SEQUENCE: + if (!up_down) { + /* We don't care about up events on "normal" keys */ + ret = strlen(kbd->sequences[key]); + memcpy(sequence, kbd->sequences[key], ret); + } + break; + case KBD_TYPE_LOCK: + if (!up_down) { + kbd->mod_state ^= key; + ret = -2; + KBD_DPRINTF("Change modifier type %d key %04x %s => %08x\n", + type, key, up_down ? "up" : "down", + kbd->mod_state); + } + break; + case KBD_TYPE_LMOD: + case KBD_TYPE_RMOD: + if (up_down) + kbd->mod_state &= ~key; + else + kbd->mod_state |= key; + KBD_DPRINTF("Change modifier type %d key %04x %s => %08x\n", + type, key, up_down ? "up" : "down", kbd->mod_state); + ret = -2; /* The caller may know the key was a modifier */ + break; + default: + KBD_DPRINTF("Unknown key: keycode=%02x mod_state=%02x (%08x)\n", + keycode, mod_state, kbd->mod_state); + break; + } + } else { + KBD_DPRINTF("Unmanaged key: keycode=%02x mod_state %08x\n", + keycode, kbd->mod_state); + } + + return ret; +} |