arch/arm26/lib/kbd.c

   1 #include <linux/config.h>
   2 #include <linux/kd.h>
   3 //#include <linux/kbd_ll.h>
   4 #include <linux/kbd_kern.h>
   5
   6 /*
   7  * Translation of escaped scancodes to keycodes.
   8  * This is now user-settable.
   9  * The keycodes 1-88,96-111,119 are fairly standard, and
  10  * should probably not be changed - changing might confuse X.
  11  * X also interprets scancode 0x5d (KEY_Begin).
  12  *
  13  * For 1-88 keycode equals scancode.
  14  */
  15
  16 #define E0_KPENTER 96
  17 #define E0_RCTRL   97
  18 #define E0_KPSLASH 98
  19 #define E0_PRSCR   99
  20 #define E0_RALT    100
  21 #define E0_BREAK   101          /* (control-pause) */
  22 #define E0_HOME    102
  23 #define E0_UP      103
  24 #define E0_PGUP    104
  25 #define E0_LEFT    105
  26 #define E0_RIGHT   106
  27 #define E0_END     107
  28 #define E0_DOWN    108
  29 #define E0_PGDN    109
  30 #define E0_INS     110
  31 #define E0_DEL     111
  32
  33 /* for USB 106 keyboard */
  34 #define E0_YEN         124
  35 #define E0_BACKSLASH   89
  36
  37
  38 #define E1_PAUSE   119
  39
  40 /*
  41  * The keycodes below are randomly located in 89-95,112-118,120-127.
  42  * They could be thrown away (and all occurrences below replaced by 0),
  43  * but that would force many users to use the `setkeycodes' utility, where
  44  * they needed not before. It does not matter that there are duplicates, as
  45  * long as no duplication occurs for any single keyboard.
  46  */
  47 #define SC_LIM 89
  48
  49 #define FOCUS_PF1 85            /* actual code! */
  50 #define FOCUS_PF2 89
  51 #define FOCUS_PF3 90
  52 #define FOCUS_PF4 91
  53 #define FOCUS_PF5 92
  54 #define FOCUS_PF6 93
  55 #define FOCUS_PF7 94
  56 #define FOCUS_PF8 95
  57 #define FOCUS_PF9 120
  58 #define FOCUS_PF10 121
  59 #define FOCUS_PF11 122
  60 #define FOCUS_PF12 123
  61
  62 #define JAP_86     124
  63 /* tfj@olivia.ping.dk:
  64  * The four keys are located over the numeric keypad, and are
  65  * labelled A1-A4. It's an rc930 keyboard, from
  66  * Regnecentralen/RC International, Now ICL.
  67  * Scancodes: 59, 5a, 5b, 5c.
  68  */
  69 #define RGN1 124
  70 #define RGN2 125
  71 #define RGN3 126
  72 #define RGN4 127
  73
  74 static unsigned char high_keys[128 - SC_LIM] = {
  75         RGN1, RGN2, RGN3, RGN4, 0, 0, 0,        /* 0x59-0x5f */
  76         0, 0, 0, 0, 0, 0, 0, 0, /* 0x60-0x67 */
  77         0, 0, 0, 0, 0, FOCUS_PF11, 0, FOCUS_PF12,       /* 0x68-0x6f */
  78         0, 0, 0, FOCUS_PF2, FOCUS_PF9, 0, 0, FOCUS_PF3, /* 0x70-0x77 */
  79         FOCUS_PF4, FOCUS_PF5, FOCUS_PF6, FOCUS_PF7,     /* 0x78-0x7b */
  80         FOCUS_PF8, JAP_86, FOCUS_PF10, 0        /* 0x7c-0x7f */
  81 };
  82
  83 /* BTC */
  84 #define E0_MACRO   112
  85 /* LK450 */
  86 #define E0_F13     113
  87 #define E0_F14     114
  88 #define E0_HELP    115
  89 #define E0_DO      116
  90 #define E0_F17     117
  91 #define E0_KPMINPLUS 118
  92 /*
  93  * My OmniKey generates e0 4c for  the "OMNI" key and the
  94  * right alt key does nada. [kkoller@nyx10.cs.du.edu]
  95  */
  96 #define E0_OK  124
  97 /*
  98  * New microsoft keyboard is rumoured to have
  99  * e0 5b (left window button), e0 5c (right window button),
 100  * e0 5d (menu button). [or: LBANNER, RBANNER, RMENU]
 101  * [or: Windows_L, Windows_R, TaskMan]
 102  */
 103 #define E0_MSLW        125
 104 #define E0_MSRW        126
 105 #define E0_MSTM        127
 106
 107 static unsigned char e0_keys[128] = {
 108         0, 0, 0, 0, 0, 0, 0, 0, /* 0x00-0x07 */
 109         0, 0, 0, 0, 0, 0, 0, 0, /* 0x08-0x0f */
 110         0, 0, 0, 0, 0, 0, 0, 0, /* 0x10-0x17 */
 111         0, 0, 0, 0, E0_KPENTER, E0_RCTRL, 0, 0, /* 0x18-0x1f */
 112         0, 0, 0, 0, 0, 0, 0, 0, /* 0x20-0x27 */
 113         0, 0, 0, 0, 0, 0, 0, 0, /* 0x28-0x2f */
 114         0, 0, 0, 0, 0, E0_KPSLASH, 0, E0_PRSCR, /* 0x30-0x37 */
 115         E0_RALT, 0, 0, 0, 0, E0_F13, E0_F14, E0_HELP,   /* 0x38-0x3f */
 116         E0_DO, E0_F17, 0, 0, 0, 0, E0_BREAK, E0_HOME,   /* 0x40-0x47 */
 117         E0_UP, E0_PGUP, 0, E0_LEFT, E0_OK, E0_RIGHT, E0_KPMINPLUS, E0_END,      /* 0x48-0x4f */
 118         E0_DOWN, E0_PGDN, E0_INS, E0_DEL, 0, 0, 0, 0,   /* 0x50-0x57 */
 119         0, 0, 0, E0_MSLW, E0_MSRW, E0_MSTM, 0, 0,       /* 0x58-0x5f */
 120         0, 0, 0, 0, 0, 0, 0, 0, /* 0x60-0x67 */
 121         0, 0, 0, 0, 0, 0, 0, E0_MACRO,  /* 0x68-0x6f */
 122         //0, 0, 0, 0, 0, 0, 0, 0,                          /* 0x70-0x77 */
 123         0, 0, 0, 0, 0, E0_BACKSLASH, 0, 0,      /* 0x70-0x77 */
 124         0, 0, 0, E0_YEN, 0, 0, 0, 0     /* 0x78-0x7f */
 125 };
 126
 127 static int gen_setkeycode(unsigned int scancode, unsigned int keycode)
 128 {
 129         if (scancode < SC_LIM || scancode > 255 || keycode > 127)
 130                 return -EINVAL;
 131         if (scancode < 128)
 132                 high_keys[scancode - SC_LIM] = keycode;
 133         else
 134                 e0_keys[scancode - 128] = keycode;
 135         return 0;
 136 }
 137
 138 static int gen_getkeycode(unsigned int scancode)
 139 {
 140         return
 141             (scancode < SC_LIM || scancode > 255) ? -EINVAL :
 142             (scancode <
 143              128) ? high_keys[scancode - SC_LIM] : e0_keys[scancode - 128];
 144 }
 145
 146 static int
 147 gen_translate(unsigned char scancode, unsigned char *keycode, char raw_mode)
 148 {
 149         static int prev_scancode;
 150
 151         /* special prefix scancodes.. */
 152         if (scancode == 0xe0 || scancode == 0xe1) {
 153                 prev_scancode = scancode;
 154                 return 0;
 155         }
 156
 157         /* 0xFF is sent by a few keyboards, ignore it. 0x00 is error */
 158         if (scancode == 0x00 || scancode == 0xff) {
 159                 prev_scancode = 0;
 160                 return 0;
 161         }
 162
 163         scancode &= 0x7f;
 164
 165         if (prev_scancode) {
 166                 /*
 167                  * usually it will be 0xe0, but a Pause key generates
 168                  * e1 1d 45 e1 9d c5 when pressed, and nothing when released
 169                  */
 170                 if (prev_scancode != 0xe0) {
 171                         if (prev_scancode == 0xe1 && scancode == 0x1d) {
 172                                 prev_scancode = 0x100;
 173                                 return 0;
 174                         }
 175                                 else if (prev_scancode == 0x100
 176                                          && scancode == 0x45) {
 177                                 *keycode = E1_PAUSE;
 178                                 prev_scancode = 0;
 179                         } else {
 180 #ifdef KBD_REPORT_UNKN
 181                                 if (!raw_mode)
 182                                         printk(KERN_INFO
 183                                                "keyboard: unknown e1 escape sequence\n");
 184 #endif
 185                                 prev_scancode = 0;
 186                                 return 0;
 187                         }
 188                 } else {
 189                         prev_scancode = 0;
 190                         /*
 191                          *  The keyboard maintains its own internal caps lock and
 192                          *  num lock statuses. In caps lock mode E0 AA precedes make
 193                          *  code and E0 2A follows break code. In num lock mode,
 194                          *  E0 2A precedes make code and E0 AA follows break code.
 195                          *  We do our own book-keeping, so we will just ignore these.
 196                          */
 197                         /*
 198                          *  For my keyboard there is no caps lock mode, but there are
 199                          *  both Shift-L and Shift-R modes. The former mode generates
 200                          *  E0 2A / E0 AA pairs, the latter E0 B6 / E0 36 pairs.
 201                          *  So, we should also ignore the latter. - aeb@cwi.nl
 202                          */
 203                         if (scancode == 0x2a || scancode == 0x36)
 204                                 return 0;
 205
 206                         if (e0_keys[scancode])
 207                                 *keycode = e0_keys[scancode];
 208                         else {
 209 #ifdef KBD_REPORT_UNKN
 210                                 if (!raw_mode)
 211                                         printk(KERN_INFO
 212                                                "keyboard: unknown scancode e0 %02x\n",
 213                                                scancode);
 214 #endif
 215                                 return 0;
 216                         }
 217                 }
 218         } else if (scancode >= SC_LIM) {
 219                 /* This happens with the FOCUS 9000 keyboard
 220                    Its keys PF1..PF12 are reported to generate
 221                    55 73 77 78 79 7a 7b 7c 74 7e 6d 6f
 222                    Moreover, unless repeated, they do not generate
 223                    key-down events, so we have to zero up_flag below */
 224                 /* Also, Japanese 86/106 keyboards are reported to
 225                    generate 0x73 and 0x7d for \ - and \ | respectively. */
 226                 /* Also, some Brazilian keyboard is reported to produce
 227                    0x73 and 0x7e for \ ? and KP-dot, respectively. */
 228
 229                 *keycode = high_keys[scancode - SC_LIM];
 230
 231                 if (!*keycode) {
 232                         if (!raw_mode) {
 233 #ifdef KBD_REPORT_UNKN
 234                                 printk(KERN_INFO
 235                                        "keyboard: unrecognized scancode (%02x)"
 236                                        " - ignored\n", scancode);
 237 #endif
 238                         }
 239                         return 0;
 240                 }
 241         } else
 242                 *keycode = scancode;
 243         return 1;
 244 }
 245
 246 static char gen_unexpected_up(unsigned char keycode)
 247 {
 248         /* unexpected, but this can happen: maybe this was a key release for a
 249            FOCUS 9000 PF key; if we want to see it, we have to clear up_flag */
 250         if (keycode >= SC_LIM || keycode == 85)
 251                 return 0;
 252         else
 253                 return 0200;
 254 }
 255
 256 /*
 257  * These are the default mappings
 258  */
 259 int  (*k_setkeycode)(unsigned int, unsigned int) = gen_setkeycode;
 260 int  (*k_getkeycode)(unsigned int) = gen_getkeycode;
 261 int  (*k_translate)(unsigned char, unsigned char *, char) = gen_translate;
 262 char (*k_unexpected_up)(unsigned char) = gen_unexpected_up;
 263 void (*k_leds)(unsigned char);
 264
 265 /* Simple translation table for the SysRq keys */
 266
 267 #ifdef CONFIG_MAGIC_SYSRQ
 268 static unsigned char gen_sysrq_xlate[128] =
 269         "\000\0331234567890-=\177\t"    /* 0x00 - 0x0f */
 270         "qwertyuiop[]\r\000as"  /* 0x10 - 0x1f */
 271         "dfghjkl;'`\000\\zxcv"  /* 0x20 - 0x2f */
 272         "bnm,./\000*\000 \000\201\202\203\204\205"      /* 0x30 - 0x3f */
 273         "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
 274         "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000"       /* 0x50 - 0x5f */
 275         "\r\000/";                      /* 0x60 - 0x6f */
 276
 277 unsigned char *k_sysrq_xlate = gen_sysrq_xlate;
 278 int k_sysrq_key = 0x54;
 279 #endif