drivers/input/i8042.c

   1 /*
   2  * (C) Copyright 2002 ELTEC Elektronik AG
   3  * Frank Gottschling <fgottschling@eltec.de>
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /* i8042.c - Intel 8042 keyboard driver routines */
  25
  26 /* includes */
  27
  28 #include <common.h>
  29
  30 #ifdef CONFIG_USE_CPCIDVI
  31 extern u8 gt_cpcidvi_in8(u32 offset);
  32 extern void gt_cpcidvi_out8(u32 offset, u8 data);
  33
  34 #define in8(a)     gt_cpcidvi_in8(a)
  35 #define out8(a, b) gt_cpcidvi_out8(a, b)
  36 #endif
  37
  38 #include <i8042.h>
  39
  40 /* defines */
  41
  42 #ifdef CONFIG_CONSOLE_CURSOR
  43 extern void console_cursor(int state);
  44 static int blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
  45 static int cursor_state;
  46 #endif
  47
  48 /* locals */
  49
  50 static int  kbd_input    = -1;          /* no input yet */
  51 static int  kbd_mapping  = KBD_US;      /* default US keyboard */
  52 static int  kbd_flags    = NORMAL;      /* after reset */
  53 static int  kbd_state;                  /* unshift code */
  54
  55 static void kbd_conv_char(unsigned char scan_code);
  56 static void kbd_led_set(void);
  57 static void kbd_normal(unsigned char scan_code);
  58 static void kbd_shift(unsigned char scan_code);
  59 static void kbd_ctrl(unsigned char scan_code);
  60 static void kbd_num(unsigned char scan_code);
  61 static void kbd_caps(unsigned char scan_code);
  62 static void kbd_scroll(unsigned char scan_code);
  63 static void kbd_alt(unsigned char scan_code);
  64 static int  kbd_input_empty(void);
  65 static int  kbd_reset(void);
  66
  67 static unsigned char kbd_fct_map[144] = {
  68         /* kbd_fct_map table for scan code */
  69          0,  AS,  AS,  AS,  AS,  AS,  AS,  AS, /* scan  0- 7 */
  70         AS,  AS,  AS,  AS,  AS,  AS,  AS,  AS, /* scan  8- F */
  71         AS,  AS,  AS,  AS,  AS,  AS,  AS,  AS, /* scan 10-17 */
  72         AS,  AS,  AS,  AS,  AS,  CN,  AS,  AS, /* scan 18-1F */
  73         AS,  AS,  AS,  AS,  AS,  AS,  AS,  AS, /* scan 20-27 */
  74         AS,  AS,  SH,  AS,  AS,  AS,  AS,  AS, /* scan 28-2F */
  75         AS,  AS,  AS,  AS,  AS,  AS,  SH,  AS, /* scan 30-37 */
  76         AS,  AS,  CP,   0,   0,   0,   0,   0, /* scan 38-3F */
  77          0,   0,   0,   0,   0,  NM,  ST,  ES, /* scan 40-47 */
  78         ES,  ES,  ES,  ES,  ES,  ES,  ES,  ES, /* scan 48-4F */
  79         ES,  ES,  ES,  ES,   0,   0,  AS,   0, /* scan 50-57 */
  80          0,   0,   0,   0,   0,   0,   0,   0, /* scan 58-5F */
  81          0,   0,   0,   0,   0,   0,   0,   0, /* scan 60-67 */
  82          0,   0,   0,   0,   0,   0,   0,   0, /* scan 68-6F */
  83         AS,   0,   0,  AS,   0,   0,  AS,   0, /* scan 70-77 */
  84          0,  AS,   0,   0,   0,  AS,   0,   0, /* scan 78-7F */
  85         AS,  CN,  AS,  AS,  AK,  ST,  EX,  EX, /* enhanced */
  86         AS,  EX,  EX,  AS,  EX,  AS,  EX,  EX  /* enhanced */
  87         };
  88
  89 static unsigned char kbd_key_map[2][5][144] = {
  90         { /* US keyboard */
  91         { /* unshift code */
  92            0, 0x1b,  '1',  '2',  '3',  '4',  '5',  '6', /* scan  0- 7 */
  93          '7',  '8',  '9',  '0',  '-',  '=', 0x08, '\t', /* scan  8- F */
  94          'q',  'w',  'e',  'r',  't',  'y',  'u',  'i', /* scan 10-17 */
  95          'o',  'p',  '[',  ']', '\r',   CN,  'a',  's', /* scan 18-1F */
  96          'd',  'f',  'g',  'h',  'j',  'k',  'l',  ';', /* scan 20-27 */
  97         '\'',  '`',   SH, '\\',  'z',  'x',  'c',  'v', /* scan 28-2F */
  98          'b',  'n',  'm',  ',',  '.',  '/',   SH,  '*', /* scan 30-37 */
  99          ' ',  ' ',   CP,    0,    0,    0,    0,    0, /* scan 38-3F */
 100            0,    0,    0,    0,    0,   NM,   ST,  '7', /* scan 40-47 */
 101          '8',  '9',  '-',  '4',  '5',  '6',  '+',  '1', /* scan 48-4F */
 102          '2',  '3',  '0',  '.',    0,    0,    0,    0, /* scan 50-57 */
 103            0,    0,    0,    0,    0,    0,    0,    0, /* scan 58-5F */
 104            0,    0,    0,    0,    0,    0,    0,    0, /* scan 60-67 */
 105            0,    0,    0,    0,    0,    0,    0,    0, /* scan 68-6F */
 106            0,    0,    0,    0,    0,    0,    0,    0, /* scan 70-77 */
 107            0,    0,    0,    0,    0,    0,    0,    0, /* scan 78-7F */
 108         '\r',   CN,  '/',  '*',  ' ',   ST,  'F',  'A', /* extended */
 109            0,  'D',  'C',    0,  'B',    0,  '@',  'P'  /* extended */
 110         },
 111         { /* shift code */
 112            0, 0x1b,  '!',  '@',  '#',  '$',  '%',  '^', /* scan  0- 7 */
 113          '&',  '*',  '(',  ')',  '_',  '+', 0x08, '\t', /* scan  8- F */
 114          'Q',  'W',  'E',  'R',  'T',  'Y',  'U',  'I', /* scan 10-17 */
 115          'O',  'P',  '{',  '}', '\r',   CN,  'A',  'S', /* scan 18-1F */
 116          'D',  'F',  'G',  'H',  'J',  'K',  'L',  ':', /* scan 20-27 */
 117          '"',  '~',   SH,  '|',  'Z',  'X',  'C',  'V', /* scan 28-2F */
 118          'B',  'N',  'M',  '<',  '>',  '?',   SH,  '*', /* scan 30-37 */
 119          ' ',  ' ',   CP,    0,    0,    0,    0,    0, /* scan 38-3F */
 120            0,    0,    0,    0,    0,   NM,   ST,  '7', /* scan 40-47 */
 121          '8',  '9',  '-',  '4',  '5',  '6',  '+',  '1', /* scan 48-4F */
 122          '2',  '3',  '0',  '.',    0,    0,    0,    0, /* scan 50-57 */
 123            0,    0,    0,    0,    0,    0,    0,    0, /* scan 58-5F */
 124            0,    0,    0,    0,    0,    0,    0,    0, /* scan 60-67 */
 125            0,    0,    0,    0,    0,    0,    0,    0, /* scan 68-6F */
 126            0,    0,    0,    0,    0,    0,    0,    0, /* scan 70-77 */
 127            0,    0,    0,    0,    0,    0,    0,    0, /* scan 78-7F */
 128         '\r',   CN,  '/',  '*',  ' ',   ST,  'F',  'A', /* extended */
 129            0,  'D',  'C',    0,  'B',    0,  '@',  'P'  /* extended */
 130         },
 131         { /* control code */
 132         0xff, 0x1b, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, /* scan  0- 7 */
 133         0x1e, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, '\t', /* scan  8- F */
 134         0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, /* scan 10-17 */
 135         0x0f, 0x10, 0x1b, 0x1d, '\r',   CN, 0x01, 0x13, /* scan 18-1F */
 136         0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0xff, /* scan 20-27 */
 137         0xff, 0x1c,   SH, 0xff, 0x1a, 0x18, 0x03, 0x16, /* scan 28-2F */
 138         0x02, 0x0e, 0x0d, 0xff, 0xff, 0xff,   SH, 0xff, /* scan 30-37 */
 139         0xff, 0xff,   CP, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */
 140         0xff, 0xff, 0xff, 0xff, 0xff,   NM,   ST, 0xff, /* scan 40-47 */
 141         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */
 142         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50-57 */
 143         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */
 144         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */
 145         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */
 146         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */
 147         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */
 148         '\r',   CN,  '/',  '*',  ' ',   ST, 0xff, 0xff, /* extended */
 149         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  /* extended */
 150         },
 151         { /* non numeric code */
 152            0, 0x1b,  '1',  '2',  '3',  '4',  '5',  '6', /* scan  0- 7 */
 153          '7',  '8',  '9',  '0',  '-',  '=', 0x08, '\t', /* scan  8- F */
 154          'q',  'w',  'e',  'r',  't',  'y',  'u',  'i', /* scan 10-17 */
 155          'o',  'p',  '[',  ']', '\r',   CN,  'a',  's', /* scan 18-1F */
 156          'd',  'f',  'g',  'h',  'j',  'k',  'l',  ';', /* scan 20-27 */
 157         '\'',  '`',   SH, '\\',  'z',  'x',  'c',  'v', /* scan 28-2F */
 158          'b',  'n',  'm',  ',',  '.',  '/',   SH,  '*', /* scan 30-37 */
 159          ' ',  ' ',   CP,    0,    0,    0,    0,    0, /* scan 38-3F */
 160            0,    0,    0,    0,    0,   NM,   ST,  'w', /* scan 40-47 */
 161          'x',  'y',  'l',  't',  'u',  'v',  'm',  'q', /* scan 48-4F */
 162          'r',  's',  'p',  'n',    0,    0,    0,    0, /* scan 50-57 */
 163            0,    0,    0,    0,    0,    0,    0,    0, /* scan 58-5F */
 164            0,    0,    0,    0,    0,    0,    0,    0, /* scan 60-67 */
 165            0,    0,    0,    0,    0,    0,    0,    0, /* scan 68-6F */
 166            0,    0,    0,    0,    0,    0,    0,    0, /* scan 70-77 */
 167            0,    0,    0,    0,    0,    0,    0,    0, /* scan 78-7F */
 168         '\r',   CN,  '/',  '*',  ' ',   ST,  'F',  'A', /* extended */
 169            0,  'D',  'C',    0,  'B',    0,  '@',  'P'  /* extended */
 170         },
 171         { /* right alt mode - not used in US keyboard */
 172         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan  0 - 7 */
 173         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 8 - F */
 174         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10 -17 */
 175         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 18 -1F */
 176         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20 -27 */
 177         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28 -2F */
 178         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30 -37 */
 179         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38 -3F */
 180         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40 -47 */
 181         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48 -4F */
 182         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50 -57 */
 183         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58 -5F */
 184         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60 -67 */
 185         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68 -6F */
 186         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70 -77 */
 187         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78 -7F */
 188         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* extended */
 189         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  /* extended */
 190         }
 191         },
 192         { /* german keyboard */
 193         { /* unshift code */
 194            0, 0x1b,  '1',  '2',  '3',  '4',  '5',  '6', /* scan  0- 7 */
 195          '7',  '8',  '9',  '0', 0xe1, '\'', 0x08, '\t', /* scan  8- F */
 196          'q',  'w',  'e',  'r',  't',  'z',  'u',  'i', /* scan 10-17 */
 197          'o',  'p', 0x81,  '+', '\r',   CN,  'a',  's', /* scan 18-1F */
 198          'd',  'f',  'g',  'h',  'j',  'k',  'l', 0x94, /* scan 20-27 */
 199         0x84,  '^',   SH,  '#',  'y',  'x',  'c',  'v', /* scan 28-2F */
 200          'b',  'n',  'm',  ',',  '.',  '-',   SH,  '*', /* scan 30-37 */
 201          ' ',  ' ',   CP,    0,    0,    0,    0,    0, /* scan 38-3F */
 202            0,    0,    0,    0,    0,   NM,   ST,  '7', /* scan 40-47 */
 203          '8',  '9',  '-',  '4',  '5',  '6',  '+',  '1', /* scan 48-4F */
 204          '2',  '3',  '0',  ',',    0,    0,  '<',    0, /* scan 50-57 */
 205            0,    0,    0,    0,    0,    0,    0,    0, /* scan 58-5F */
 206            0,    0,    0,    0,    0,    0,    0,    0, /* scan 60-67 */
 207            0,    0,    0,    0,    0,    0,    0,    0, /* scan 68-6F */
 208            0,    0,    0,    0,    0,    0,    0,    0, /* scan 70-77 */
 209            0,    0,    0,    0,    0,    0,    0,    0, /* scan 78-7F */
 210         '\r',   CN,  '/',  '*',  ' ',   ST,  'F',  'A', /* extended */
 211            0,  'D',  'C',    0,  'B',    0,  '@',  'P'  /* extended */
 212         },
 213         { /* shift code */
 214            0, 0x1b,  '!',  '"', 0x15,  '$',  '%',  '&', /* scan  0- 7 */
 215          '/',  '(',  ')',  '=',  '?',  '`', 0x08, '\t', /* scan  8- F */
 216          'Q',  'W',  'E',  'R',  'T',  'Z',  'U',  'I', /* scan 10-17 */
 217          'O',  'P', 0x9a,  '*', '\r',   CN,  'A',  'S', /* scan 18-1F */
 218          'D',  'F',  'G',  'H',  'J',  'K',  'L', 0x99, /* scan 20-27 */
 219         0x8e, 0xf8,   SH, '\'',  'Y',  'X',  'C',  'V', /* scan 28-2F */
 220          'B',  'N',  'M',  ';',  ':',  '_',   SH,  '*', /* scan 30-37 */
 221          ' ',  ' ',   CP,    0,    0,    0,    0,    0, /* scan 38-3F */
 222            0,    0,    0,    0,    0,   NM,   ST,  '7', /* scan 40-47 */
 223          '8',  '9',  '-',  '4',  '5',  '6',  '+',  '1', /* scan 48-4F */
 224          '2',  '3',  '0',  ',',    0,    0,  '>',    0, /* scan 50-57 */
 225            0,    0,    0,    0,    0,    0,    0,    0, /* scan 58-5F */
 226            0,    0,    0,    0,    0,    0,    0,    0, /* scan 60-67 */
 227            0,    0,    0,    0,    0,    0,    0,    0, /* scan 68-6F */
 228            0,    0,    0,    0,    0,    0,    0,    0, /* scan 70-77 */
 229            0,    0,    0,    0,    0,    0,    0,    0, /* scan 78-7F */
 230         '\r',   CN,  '/',  '*',  ' ',   ST,  'F',  'A', /* extended */
 231            0,  'D',  'C',    0,  'B',    0,  '@',  'P'  /* extended */
 232         },
 233         { /* control code */
 234         0xff, 0x1b, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, /* scan  0- 7 */
 235         0x1e, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, '\t', /* scan  8- F */
 236         0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, /* scan 10-17 */
 237         0x0f, 0x10, 0x1b, 0x1d, '\r',   CN, 0x01, 0x13, /* scan 18-1F */
 238         0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0xff, /* scan 20-27 */
 239         0xff, 0x1c,   SH, 0xff, 0x1a, 0x18, 0x03, 0x16, /* scan 28-2F */
 240         0x02, 0x0e, 0x0d, 0xff, 0xff, 0xff,   SH, 0xff, /* scan 30-37 */
 241         0xff, 0xff,   CP, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */
 242         0xff, 0xff, 0xff, 0xff, 0xff,   NM,   ST, 0xff, /* scan 40-47 */
 243         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */
 244         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50-57 */
 245         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */
 246         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */
 247         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */
 248         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */
 249         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */
 250         '\r',   CN,  '/',  '*',  ' ',   ST, 0xff, 0xff, /* extended */
 251         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  /* extended */
 252         },
 253         { /* non numeric code */
 254            0, 0x1b,  '1',  '2',  '3',  '4',  '5',  '6', /* scan  0- 7 */
 255          '7',  '8',  '9',  '0', 0xe1, '\'', 0x08, '\t', /* scan  8- F */
 256          'q',  'w',  'e',  'r',  't',  'z',  'u',  'i', /* scan 10-17 */
 257          'o',  'p', 0x81,  '+', '\r',   CN,  'a',  's', /* scan 18-1F */
 258          'd',  'f',  'g',  'h',  'j',  'k',  'l', 0x94, /* scan 20-27 */
 259         0x84,  '^',   SH,    0,  'y',  'x',  'c',  'v', /* scan 28-2F */
 260          'b',  'n',  'm',  ',',  '.',  '-',   SH,  '*', /* scan 30-37 */
 261          ' ',  ' ',   CP,    0,    0,    0,    0,    0, /* scan 38-3F */
 262            0,    0,    0,    0,    0,   NM,   ST,  'w', /* scan 40-47 */
 263          'x',  'y',  'l',  't',  'u',  'v',  'm',  'q', /* scan 48-4F */
 264          'r',  's',  'p',  'n',    0,    0,  '<',    0, /* scan 50-57 */
 265            0,    0,    0,    0,    0,    0,    0,    0, /* scan 58-5F */
 266            0,    0,    0,    0,    0,    0,    0,    0, /* scan 60-67 */
 267            0,    0,    0,    0,    0,    0,    0,    0, /* scan 68-6F */
 268            0,    0,    0,    0,    0,    0,    0,    0, /* scan 70-77 */
 269            0,    0,    0,    0,    0,    0,    0,    0, /* scan 78-7F */
 270         '\r',   CN,  '/',  '*',  ' ',   ST,  'F',  'A', /* extended */
 271            0,  'D',  'C',    0,  'B',    0,  '@',  'P'  /* extended */
 272         },
 273         { /* Right alt mode - is used in German keyboard */
 274         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan  0 - 7 */
 275          '{',  '[',  ']',  '}', '\\', 0xff, 0xff, 0xff, /* scan  8 - F */
 276          '@', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10 -17 */
 277         0xff, 0xff, 0xff,  '~', 0xff, 0xff, 0xff, 0xff, /* scan 18 -1F */
 278         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20 -27 */
 279         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28 -2F */
 280         0xff, 0xff, 0xe6, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30 -37 */
 281         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38 -3F */
 282         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40 -47 */
 283         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48 -4F */
 284         0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  '|', 0xff, /* scan 50 -57 */
 285         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58 -5F */
 286         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60 -67 */
 287         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68 -6F */
 288         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70 -77 */
 289         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78 -7F */
 290         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* extended */
 291         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  /* extended */
 292         }
 293         }
 294         };
 295
 296 static unsigned char ext_key_map[] = {
 297         0x1c, /* keypad enter */
 298         0x1d, /* right control */
 299         0x35, /* keypad slash */
 300         0x37, /* print screen */
 301         0x38, /* right alt */
 302         0x46, /* break */
 303         0x47, /* editpad home */
 304         0x48, /* editpad up */
 305         0x49, /* editpad pgup */
 306         0x4b, /* editpad left */
 307         0x4d, /* editpad right */
 308         0x4f, /* editpad end */
 309         0x50, /* editpad dn */
 310         0x51, /* editpad pgdn */
 311         0x52, /* editpad ins */
 312         0x53, /* editpad del */
 313         0x00  /* map end */
 314         };
 315
 316 /******************************************************************************/
 317
 318 static int kbd_controller_present(void)
 319 {
 320         return in8(I8042_STATUS_REG) != 0xff;
 321 }
 322
 323 /*******************************************************************************
 324  *
 325  * i8042_kbd_init - reset keyboard and init state flags
 326  */
 327 int i8042_kbd_init(void)
 328 {
 329         int keymap, try;
 330         char *penv;
 331
 332         if (!kbd_controller_present())
 333                 return -1;
 334
 335 #ifdef CONFIG_USE_CPCIDVI
 336         penv = getenv("console");
 337         if (penv != NULL) {
 338                 if (strncmp(penv, "serial", 7) == 0)
 339                         return -1;
 340         }
 341 #endif
 342         /* Init keyboard device (default US layout) */
 343         keymap = KBD_US;
 344         penv = getenv("keymap");
 345         if (penv != NULL) {
 346                 if (strncmp(penv, "de", 3) == 0)
 347                         keymap = KBD_GER;
 348         }
 349
 350         for (try = 0; try < KBD_RESET_TRIES; try++) {
 351                 if (kbd_reset() == 0) {
 352                         kbd_mapping = keymap;
 353                         kbd_flags   = NORMAL;
 354                         kbd_state   = 0;
 355                         kbd_led_set();
 356                         return 0;
 357                 }
 358         }
 359         return -1;
 360 }
 361
 362
 363 /*******************************************************************************
 364  *
 365  * i8042_tstc - test if keyboard input is available
 366  *              option: cursor blinking if called in a loop
 367  */
 368 int i8042_tstc(void)
 369 {
 370         unsigned char scan_code = 0;
 371
 372 #ifdef CONFIG_CONSOLE_CURSOR
 373         if (--blinkCount == 0) {
 374                 cursor_state ^= 1;
 375                 console_cursor(cursor_state);
 376                 blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
 377                 udelay(10);
 378         }
 379 #endif
 380
 381         if ((in8(I8042_STATUS_REG) & 0x01) == 0) {
 382                 return 0;
 383         } else {
 384                 scan_code = in8(I8042_DATA_REG);
 385                 if (scan_code == 0xfa)
 386                         return 0;
 387
 388                 kbd_conv_char(scan_code);
 389
 390                 if (kbd_input != -1)
 391                         return 1;
 392         }
 393         return 0;
 394 }
 395
 396
 397 /*******************************************************************************
 398  *
 399  * i8042_getc - wait till keyboard input is available
 400  *              option: turn on/off cursor while waiting
 401  */
 402 int i8042_getc(void)
 403 {
 404         int ret_chr;
 405         unsigned char scan_code;
 406
 407         while (kbd_input == -1) {
 408                 while ((in8(I8042_STATUS_REG) & 0x01) == 0) {
 409 #ifdef CONFIG_CONSOLE_CURSOR
 410                         if (--blinkCount == 0) {
 411                                 cursor_state ^= 1;
 412                                 console_cursor(cursor_state);
 413                                 blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
 414                         }
 415                         udelay(10);
 416 #endif
 417                 }
 418                 scan_code = in8(I8042_DATA_REG);
 419                 if (scan_code != 0xfa)
 420                         kbd_conv_char (scan_code);
 421         }
 422         ret_chr = kbd_input;
 423         kbd_input = -1;
 424         return ret_chr;
 425 }
 426
 427
 428 /******************************************************************************/
 429
 430 static void kbd_conv_char(unsigned char scan_code)
 431 {
 432         if (scan_code == 0xe0) {
 433                 kbd_flags |= EXT;
 434                 return;
 435         }
 436
 437         /* if high bit of scan_code, set break flag */
 438         if (scan_code & 0x80)
 439                 kbd_flags |=  BRK;
 440         else
 441                 kbd_flags &= ~BRK;
 442
 443         if ((scan_code == 0xe1) || (kbd_flags & E1)) {
 444                 if (scan_code == 0xe1) {
 445                         kbd_flags ^= BRK;    /* reset the break flag */
 446                         kbd_flags ^= E1;     /* bitwise EXOR with E1 flag */
 447                 }
 448                 return;
 449         }
 450
 451         scan_code &= 0x7f;
 452
 453         if (kbd_flags & EXT) {
 454                 int i;
 455
 456                 kbd_flags ^= EXT;
 457                 for (i = 0; ext_key_map[i]; i++) {
 458                         if (ext_key_map[i] == scan_code) {
 459                                 scan_code = 0x80 + i;
 460                                 break;
 461                         }
 462                 }
 463                 /* not found ? */
 464                 if (!ext_key_map[i])
 465                         return;
 466         }
 467
 468         switch (kbd_fct_map[scan_code]) {
 469         case AS:
 470                 kbd_normal(scan_code);
 471                 break;
 472         case SH:
 473                 kbd_shift(scan_code);
 474                 break;
 475         case CN:
 476                 kbd_ctrl(scan_code);
 477                 break;
 478         case NM:
 479                 kbd_num(scan_code);
 480                 break;
 481         case CP:
 482                 kbd_caps(scan_code);
 483                 break;
 484         case ST:
 485                 kbd_scroll(scan_code);
 486                 break;
 487         case AK:
 488                 kbd_alt(scan_code);
 489                 break;
 490         }
 491         return;
 492 }
 493
 494
 495 /******************************************************************************/
 496
 497 static void kbd_normal(unsigned char scan_code)
 498 {
 499         unsigned char chr;
 500
 501         if ((kbd_flags & BRK) == NORMAL) {
 502                 chr = kbd_key_map[kbd_mapping][kbd_state][scan_code];
 503                 if ((chr == 0xff) || (chr == 0x00))
 504                         return;
 505
 506                 /* if caps lock convert upper to lower */
 507                 if (((kbd_flags & CAPS) == CAPS) &&
 508                                 (chr >= 'a' && chr <= 'z')) {
 509                         chr -= 'a' - 'A';
 510                 }
 511                 kbd_input = chr;
 512         }
 513 }
 514
 515
 516 /******************************************************************************/
 517
 518 static void kbd_shift(unsigned char scan_code)
 519 {
 520         if ((kbd_flags & BRK) == BRK) {
 521                 kbd_state = AS;
 522                 kbd_flags &= (~SHIFT);
 523         } else {
 524                 kbd_state = SH;
 525                 kbd_flags |= SHIFT;
 526         }
 527 }
 528
 529
 530 /******************************************************************************/
 531
 532 static void kbd_ctrl(unsigned char scan_code)
 533 {
 534         if ((kbd_flags & BRK) == BRK) {
 535                 kbd_state = AS;
 536                 kbd_flags &= (~CTRL);
 537         } else {
 538                 kbd_state = CN;
 539                 kbd_flags |= CTRL;
 540         }
 541 }
 542
 543
 544 /******************************************************************************/
 545
 546 static void kbd_caps(unsigned char scan_code)
 547 {
 548         if ((kbd_flags & BRK) == NORMAL) {
 549                 kbd_flags ^= CAPS;
 550                 kbd_led_set();    /* update keyboard LED */
 551         }
 552 }
 553
 554
 555 /******************************************************************************/
 556
 557 static void kbd_num(unsigned char scan_code)
 558 {
 559         if ((kbd_flags & BRK) == NORMAL) {
 560                 kbd_flags ^= NUM;
 561                 kbd_state = (kbd_flags & NUM) ? AS : NM;
 562                 kbd_led_set();    /* update keyboard LED */
 563         }
 564 }
 565
 566
 567 /******************************************************************************/
 568
 569 static void kbd_scroll(unsigned char scan_code)
 570 {
 571         if ((kbd_flags & BRK) == NORMAL) {
 572                 kbd_flags ^= STP;
 573                 kbd_led_set();    /* update keyboard LED */
 574                 if (kbd_flags & STP)
 575                         kbd_input = 0x13;
 576                 else
 577                         kbd_input = 0x11;
 578         }
 579 }
 580
 581 /******************************************************************************/
 582
 583 static void kbd_alt(unsigned char scan_code)
 584 {
 585         if ((kbd_flags & BRK) == BRK) {
 586                 kbd_state = AS;
 587                 kbd_flags &= (~ALT);
 588         } else {
 589                 kbd_state = AK;
 590                 kbd_flags &= ALT;
 591         }
 592 }
 593
 594
 595 /******************************************************************************/
 596
 597 static void kbd_led_set(void)
 598 {
 599         kbd_input_empty();
 600         out8(I8042_DATA_REG, 0xed);    /* SET LED command */
 601         kbd_input_empty();
 602         out8(I8042_DATA_REG, (kbd_flags & 0x7));    /* LED bits only */
 603 }
 604
 605
 606 /******************************************************************************/
 607
 608 static int kbd_input_empty(void)
 609 {
 610         int kbdTimeout = KBD_TIMEOUT * 1000;
 611
 612         while ((in8(I8042_STATUS_REG) & I8042_STATUS_IN_DATA) && kbdTimeout--)
 613                 udelay(1);
 614
 615         return kbdTimeout != -1;
 616 }
 617
 618 /******************************************************************************/
 619
 620 static int kbd_reset(void)
 621 {
 622         if (kbd_input_empty() == 0)
 623                 return -1;
 624
 625         out8(I8042_DATA_REG, 0xff);
 626
 627         if (kbd_input_empty() == 0)
 628                 return -1;
 629
 630 #ifdef CONFIG_USE_CPCIDVI
 631         out8(I8042_COMMAND_REG, 0x60);
 632 #else
 633         out8(I8042_DATA_REG, 0x60);
 634 #endif
 635
 636         if (kbd_input_empty() == 0)
 637                 return -1;
 638
 639         out8(I8042_DATA_REG, 0x45);
 640
 641
 642         if (kbd_input_empty() == 0)
 643                 return -1;
 644
 645         out8(I8042_COMMAND_REG, 0xae);
 646
 647         if (kbd_input_empty() == 0)
 648                 return -1;
 649
 650         return 0;
 651 }