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  1. /*
  2.  * Copyright (c) 2009 Vineeth Pillai
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup kbd_ctl
  30.  * @ingroup kbd
  31.  * @{
  32.  */
  33. /**
  34.  * @file
  35.  * @brief PL050 keyboard controller driver.
  36.  */
  37.  
  38. #include <kbd.h>
  39. #include <io/console.h>
  40. #include <io/keycode.h>
  41. #include <kbd_ctl.h>
  42. #include <gsp.h>
  43. #include <stdio.h>
  44.  
  45. #define PL050_CAPS_SCAN_CODE 0x58
  46. #define PL050_NUM_SCAN_CODE 0x77
  47. #define PL050_SCROLL_SCAN_CODE 0x7E
  48.  
  49. static bool is_lock_key(int);
  50. enum dec_state {
  51.     ds_s,
  52.     ds_e
  53. };
  54.  
  55. static enum dec_state ds;
  56.  
  57. static int scanmap_simple[] = {
  58.  
  59.     [0x0e] = KC_BACKTICK,
  60.  
  61.     [0x16] = KC_1,
  62.     [0x1e] = KC_2,
  63.     [0x26] = KC_3,
  64.     [0x25] = KC_4,
  65.     [0x2e] = KC_5,
  66.     [0x36] = KC_6,
  67.     [0x3d] = KC_7,
  68.     [0x3e] = KC_8,
  69.     [0x46] = KC_9,
  70.     [0x45] = KC_0,
  71.  
  72.     [0x4e] = KC_MINUS,
  73.     [0x55] = KC_EQUALS,
  74.     [0x66] = KC_BACKSPACE,
  75.  
  76.     [0x0d] = KC_TAB,
  77.  
  78.     [0x15] = KC_Q,
  79.     [0x1d] = KC_W,
  80.     [0x24] = KC_E,
  81.     [0x2d] = KC_R,
  82.     [0x2c] = KC_T,
  83.     [0x35] = KC_Y,
  84.     [0x3c] = KC_U,
  85.     [0x43] = KC_I,
  86.     [0x44] = KC_O,
  87.     [0x4d] = KC_P,
  88.  
  89.     [0x54] = KC_LBRACKET,
  90.     [0x5b] = KC_RBRACKET,
  91.  
  92.     [0x58] = KC_CAPS_LOCK,
  93.  
  94.     [0x1c] = KC_A,
  95.     [0x1b] = KC_S,
  96.     [0x23] = KC_D,
  97.     [0x2b] = KC_F,
  98.     [0x34] = KC_G,
  99.     [0x33] = KC_H,
  100.     [0x3b] = KC_J,
  101.     [0x42] = KC_K,
  102.     [0x4b] = KC_L,
  103.  
  104.     [0x4c] = KC_SEMICOLON,
  105.     [0x52] = KC_QUOTE,
  106.     [0x5d] = KC_BACKSLASH,
  107.  
  108.     [0x12] = KC_LSHIFT,
  109.  
  110.     [0x1a] = KC_Z,
  111.     [0x22] = KC_X,
  112.     [0x21] = KC_C,
  113.     [0x2a] = KC_V,
  114.     [0x32] = KC_B,
  115.     [0x31] = KC_N,
  116.     [0x3a] = KC_M,
  117.  
  118.     [0x41] = KC_COMMA,
  119.     [0x49] = KC_PERIOD,
  120.     [0x4a] = KC_SLASH,
  121.  
  122.     [0x59] = KC_RSHIFT,
  123.  
  124.     [0x14] = KC_LCTRL,
  125.     [0x11] = KC_LALT,
  126.     [0x29] = KC_SPACE,
  127.  
  128.     [0x76] = KC_ESCAPE,
  129.  
  130.     [0x05] = KC_F1,
  131.     [0x06] = KC_F2,
  132.     [0x04] = KC_F3,
  133.     [0x0c] = KC_F4,
  134.     [0x03] = KC_F5,
  135.     [0x0b] = KC_F6,
  136.     [0x02] = KC_F7,
  137.  
  138.     [0x0a] = KC_F8,
  139.     [0x01] = KC_F9,
  140.     [0x09] = KC_F10,
  141.  
  142.     [0x78] = KC_F11,
  143.     [0x07] = KC_F12,
  144.  
  145.     [0x60] = KC_SCROLL_LOCK,
  146.  
  147.     [0x5a] = KC_ENTER,
  148.  
  149.     [0x77] = KC_NUM_LOCK,
  150.     [0x7c] = KC_NTIMES,
  151.     [0x7b] = KC_NMINUS,
  152.     [0x79] = KC_NPLUS,
  153.     [0x6c] = KC_N7,
  154.     [0x75] = KC_N8,
  155.     [0x7d] = KC_N9,
  156.     [0x6b] = KC_N4,
  157.     [0x73] = KC_N5,
  158.     [0x74] = KC_N6,
  159.     [0x69] = KC_N1,
  160.     [0x72] = KC_N2,
  161.     [0x7a] = KC_N3,
  162.     [0x70] = KC_N0,
  163.     [0x71] = KC_NPERIOD
  164. };
  165.  
  166. static int scanmap_e0[] = {
  167.     [0x65] = KC_RALT,
  168.     [0x59] = KC_RSHIFT,
  169.  
  170.     [0x64] = KC_PRTSCR,
  171.  
  172.     [0x70] = KC_INSERT,
  173.     [0x6c] = KC_HOME,
  174.     [0x7d] = KC_PAGE_UP,
  175.  
  176.     [0x71] = KC_DELETE,
  177.     [0x69] = KC_END,
  178.     [0x7a] = KC_PAGE_DOWN,
  179.  
  180.     [0x75] = KC_UP,
  181.     [0x6b] = KC_LEFT,
  182.     [0x72] = KC_DOWN,
  183.     [0x74] = KC_RIGHT,
  184.  
  185.     [0x4a] = KC_NSLASH,
  186.     [0x5a] = KC_NENTER
  187. };
  188.  
  189. int kbd_ctl_init(void)
  190. {
  191.     ds = ds_s;
  192.     return 0;
  193. }
  194.  
  195. void kbd_ctl_parse_scancode(int scancode)
  196. {
  197.     static int key_release_flag = 0;
  198.     static int is_locked = 0;
  199.     console_ev_type_t type;
  200.     unsigned int key;
  201.     int *map;
  202.     size_t map_length;
  203.  
  204.     if (scancode == 0xe0) {
  205.         ds = ds_e;
  206.         return;
  207.     }
  208.  
  209.     switch (ds) {
  210.     case ds_s:
  211.         map = scanmap_simple;
  212.         map_length = sizeof(scanmap_simple) / sizeof(int);
  213.         break;
  214.     case ds_e:
  215.         map = scanmap_e0;
  216.         map_length = sizeof(scanmap_e0) / sizeof(int);
  217.         break;
  218.     default:
  219.         map = NULL;
  220.         map_length = 0;
  221.     }
  222.  
  223.     ds = ds_s;
  224.     if (scancode == 0xf0) {
  225.         key_release_flag = 1;
  226.         return;
  227.     } else {
  228.         if (key_release_flag) {
  229.             type = KEY_RELEASE;
  230.             key_release_flag = 0;
  231.             if (is_lock_key(scancode)) {
  232.                 if (!is_locked) {
  233.                     is_locked = 1;
  234.                 } else {
  235.                     is_locked = 0;
  236.                     return;
  237.                 }
  238.             }
  239.         } else {
  240.             if (is_lock_key(scancode) && is_locked)
  241.                 return;
  242.             type = KEY_PRESS;
  243.         }
  244.     }
  245.  
  246.     if (scancode < 0)
  247.         return;
  248.  
  249.     key = map[scancode];
  250.     if (key != 0)
  251.         kbd_push_ev(type, key);
  252. }
  253.  
  254. static bool is_lock_key(int sc)
  255. {
  256.     return ((sc == PL050_CAPS_SCAN_CODE) || (sc == PL050_NUM_SCAN_CODE) ||
  257.         (sc == PL050_SCROLL_SCAN_CODE));
  258. }
  259.  
  260. /**
  261.  * @}
  262.  */
  263.