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4651 pillai 1
/*
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 * Copyright (c) 2009 Vineeth Pillai
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup kbd_ctl
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 * @ingroup kbd
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 * @{
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 */
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/**
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 * @file
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 * @brief PL050 keyboard controller driver.
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 */
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#include <kbd.h>
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#include <io/console.h>
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#include <io/keycode.h>
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#include <kbd_ctl.h>
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#include <gsp.h>
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#include <stdio.h>
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#define PL050_CAPS_SCAN_CODE 0x58
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#define PL050_NUM_SCAN_CODE 0x77
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#define PL050_SCROLL_SCAN_CODE 0x7E
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static bool is_lock_key(int);
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enum dec_state {
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    ds_s,
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    ds_e
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};
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static enum dec_state ds;
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static int scanmap_simple[] = {
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    [0x0e] = KC_BACKTICK,
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    [0x16] = KC_1,
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    [0x1e] = KC_2,
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    [0x26] = KC_3,
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    [0x25] = KC_4,
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    [0x2e] = KC_5,
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    [0x36] = KC_6,
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    [0x3d] = KC_7,
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    [0x3e] = KC_8,
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    [0x46] = KC_9,
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    [0x45] = KC_0,
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    [0x4e] = KC_MINUS,
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    [0x55] = KC_EQUALS,
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    [0x66] = KC_BACKSPACE,
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    [0x0d] = KC_TAB,
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    [0x15] = KC_Q,
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    [0x1d] = KC_W,
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    [0x24] = KC_E,
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    [0x2d] = KC_R,
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    [0x2c] = KC_T,
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    [0x35] = KC_Y,
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    [0x3c] = KC_U,
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    [0x43] = KC_I,
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    [0x44] = KC_O,
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    [0x4d] = KC_P,
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    [0x54] = KC_LBRACKET,
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    [0x5b] = KC_RBRACKET,
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    [0x58] = KC_CAPS_LOCK,
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    [0x1c] = KC_A,
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    [0x1b] = KC_S,
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    [0x23] = KC_D,
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    [0x2b] = KC_F,
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    [0x34] = KC_G,
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    [0x33] = KC_H,
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    [0x3b] = KC_J,
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    [0x42] = KC_K,
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    [0x4b] = KC_L,
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    [0x4c] = KC_SEMICOLON,
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    [0x52] = KC_QUOTE,
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    [0x5d] = KC_BACKSLASH,
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    [0x12] = KC_LSHIFT,
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    [0x1a] = KC_Z,
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    [0x22] = KC_X,
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    [0x21] = KC_C,
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    [0x2a] = KC_V,
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    [0x32] = KC_B,
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    [0x31] = KC_N,
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    [0x3a] = KC_M,
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    [0x41] = KC_COMMA,
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    [0x49] = KC_PERIOD,
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    [0x4a] = KC_SLASH,
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    [0x59] = KC_RSHIFT,
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    [0x14] = KC_LCTRL,
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    [0x11] = KC_LALT,
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    [0x29] = KC_SPACE,
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    [0x76] = KC_ESCAPE,
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    [0x05] = KC_F1,
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    [0x06] = KC_F2,
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    [0x04] = KC_F3,
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    [0x0c] = KC_F4,
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    [0x03] = KC_F5,
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    [0x0b] = KC_F6,
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    [0x02] = KC_F7,
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    [0x0a] = KC_F8,
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    [0x01] = KC_F9,
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    [0x09] = KC_F10,
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    [0x78] = KC_F11,
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    [0x07] = KC_F12,
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    [0x60] = KC_SCROLL_LOCK,
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    [0x5a] = KC_ENTER,
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    [0x77] = KC_NUM_LOCK,
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    [0x7c] = KC_NTIMES,
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    [0x7b] = KC_NMINUS,
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    [0x79] = KC_NPLUS,
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    [0x6c] = KC_N7,
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    [0x75] = KC_N8,
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    [0x7d] = KC_N9,
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    [0x6b] = KC_N4,
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    [0x73] = KC_N5,
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    [0x74] = KC_N6,
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    [0x69] = KC_N1,
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    [0x72] = KC_N2,
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    [0x7a] = KC_N3,
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    [0x70] = KC_N0,
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    [0x71] = KC_NPERIOD
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};
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static int scanmap_e0[] = {
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    [0x65] = KC_RALT,
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    [0x59] = KC_RSHIFT,
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    [0x64] = KC_PRTSCR,
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    [0x70] = KC_INSERT,
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    [0x6c] = KC_HOME,
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    [0x7d] = KC_PAGE_UP,
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    [0x71] = KC_DELETE,
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    [0x69] = KC_END,
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    [0x7a] = KC_PAGE_DOWN,
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    [0x75] = KC_UP,
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    [0x6b] = KC_LEFT,
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    [0x72] = KC_DOWN,
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    [0x74] = KC_RIGHT,
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    [0x4a] = KC_NSLASH,
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    [0x5a] = KC_NENTER
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};
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int kbd_ctl_init(void)
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{
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    ds = ds_s;
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    return 0;
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}
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void kbd_ctl_parse_scancode(int scancode)
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{
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    static int key_release_flag = 0;
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    static int is_locked = 0;
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    console_ev_type_t type;
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    unsigned int key;
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    int *map;
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    size_t map_length;
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    if (scancode == 0xe0) {
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        ds = ds_e;
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        return;
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    }
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    switch (ds) {
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    case ds_s:
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        map = scanmap_simple;
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        map_length = sizeof(scanmap_simple) / sizeof(int);
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        break;
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    case ds_e:
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        map = scanmap_e0;
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        map_length = sizeof(scanmap_e0) / sizeof(int);
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        break;
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    default:
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        map = NULL;
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        map_length = 0;
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    }
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    ds = ds_s;
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    if (scancode == 0xf0) {
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        key_release_flag = 1;
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        return;
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    } else {
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        if (key_release_flag) {
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            type = KEY_RELEASE;
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            key_release_flag = 0;
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            if (is_lock_key(scancode)) {
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                if (!is_locked) {
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                    is_locked = 1;
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                } else {
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                    is_locked = 0;
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                    return;
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                }
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            }
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        } else {
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            if (is_lock_key(scancode) && is_locked)
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                return;
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            type = KEY_PRESS;
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        }
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    }
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    if (scancode < 0)
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        return;
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    key = map[scancode];
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    if (key != 0)
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        kbd_push_ev(type, key);
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}
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static bool is_lock_key(int sc)
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{
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    return ((sc == PL050_CAPS_SCAN_CODE) || (sc == PL050_NUM_SCAN_CODE) ||
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        (sc == PL050_SCROLL_SCAN_CODE));
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}
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/**
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 * @}
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 */