linux/drivers/input/keyboard/atakbd.c
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   1/*
   2 *  atakbd.c
   3 *
   4 *  Copyright (c) 2005 Michael Schmitz
   5 *
   6 * Based on amikbd.c, which is
   7 *
   8 *  Copyright (c) 2000-2001 Vojtech Pavlik
   9 *
  10 *  Based on the work of:
  11 *      Hamish Macdonald
  12 */
  13
  14/*
  15 * Atari keyboard driver for Linux/m68k
  16 *
  17 * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c
  18 * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard
  19 * interrupt is shared with the MIDI ACIA so MIDI data also get handled there).
  20 * This driver only deals with handing key events off to the input layer.
  21 */
  22
  23/*
  24 * This program is free software; you can redistribute it and/or modify
  25 * it under the terms of the GNU General Public License as published by
  26 * the Free Software Foundation; either version 2 of the License, or
  27 * (at your option) any later version.
  28 *
  29 * This program is distributed in the hope that it will be useful,
  30 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  32 * GNU General Public License for more details.
  33 *
  34 * You should have received a copy of the GNU General Public License
  35 * along with this program; if not, write to the Free Software
  36 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  37 *
  38 * Should you need to contact me, the author, you can do so either by
  39 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  40 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  41 */
  42
  43#include <linux/module.h>
  44#include <linux/init.h>
  45#include <linux/input.h>
  46#include <linux/delay.h>
  47#include <linux/interrupt.h>
  48
  49#include <asm/atariints.h>
  50#include <asm/atarihw.h>
  51#include <asm/atarikb.h>
  52#include <asm/irq.h>
  53
  54MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
  55MODULE_DESCRIPTION("Atari keyboard driver");
  56MODULE_LICENSE("GPL");
  57
  58/*
  59 0x47: KP_7     71
  60 0x48: KP_8     72
  61 0x49: KP_9     73
  62 0x62: KP_/     98
  63 0x4b: KP_4     75
  64 0x4c: KP_5     76
  65 0x4d: KP_6     77
  66 0x37: KP_*     55
  67 0x4f: KP_1     79
  68 0x50: KP_2     80
  69 0x51: KP_3     81
  70 0x4a: KP_-     74
  71 0x52: KP_0     82
  72 0x53: KP_.     83
  73 0x4e: KP_+     78
  74
  75 0x67: Up       103
  76 0x6c: Down     108
  77 0x69: Left     105
  78 0x6a: Right    106
  79 */
  80
  81
  82static unsigned char atakbd_keycode[0x72] = {   /* American layout */
  83        [0]      = KEY_GRAVE,
  84        [1]      = KEY_ESC,
  85        [2]      = KEY_1,
  86        [3]      = KEY_2,
  87        [4]      = KEY_3,
  88        [5]      = KEY_4,
  89        [6]      = KEY_5,
  90        [7]      = KEY_6,
  91        [8]      = KEY_7,
  92        [9]      = KEY_8,
  93        [10]     = KEY_9,
  94        [11]     = KEY_0,
  95        [12]     = KEY_MINUS,
  96        [13]     = KEY_EQUAL,
  97        [14]     = KEY_BACKSPACE,
  98        [15]     = KEY_TAB,
  99        [16]     = KEY_Q,
 100        [17]     = KEY_W,
 101        [18]     = KEY_E,
 102        [19]     = KEY_R,
 103        [20]     = KEY_T,
 104        [21]     = KEY_Y,
 105        [22]     = KEY_U,
 106        [23]     = KEY_I,
 107        [24]     = KEY_O,
 108        [25]     = KEY_P,
 109        [26]     = KEY_LEFTBRACE,
 110        [27]     = KEY_RIGHTBRACE,
 111        [28]     = KEY_ENTER,
 112        [29]     = KEY_LEFTCTRL,
 113        [30]     = KEY_A,
 114        [31]     = KEY_S,
 115        [32]     = KEY_D,
 116        [33]     = KEY_F,
 117        [34]     = KEY_G,
 118        [35]     = KEY_H,
 119        [36]     = KEY_J,
 120        [37]     = KEY_K,
 121        [38]     = KEY_L,
 122        [39]     = KEY_SEMICOLON,
 123        [40]     = KEY_APOSTROPHE,
 124        [41]     = KEY_BACKSLASH,       /* FIXME, '#' */
 125        [42]     = KEY_LEFTSHIFT,
 126        [43]     = KEY_GRAVE,           /* FIXME: '~' */
 127        [44]     = KEY_Z,
 128        [45]     = KEY_X,
 129        [46]     = KEY_C,
 130        [47]     = KEY_V,
 131        [48]     = KEY_B,
 132        [49]     = KEY_N,
 133        [50]     = KEY_M,
 134        [51]     = KEY_COMMA,
 135        [52]     = KEY_DOT,
 136        [53]     = KEY_SLASH,
 137        [54]     = KEY_RIGHTSHIFT,
 138        [55]     = KEY_KPASTERISK,
 139        [56]     = KEY_LEFTALT,
 140        [57]     = KEY_SPACE,
 141        [58]     = KEY_CAPSLOCK,
 142        [59]     = KEY_F1,
 143        [60]     = KEY_F2,
 144        [61]     = KEY_F3,
 145        [62]     = KEY_F4,
 146        [63]     = KEY_F5,
 147        [64]     = KEY_F6,
 148        [65]     = KEY_F7,
 149        [66]     = KEY_F8,
 150        [67]     = KEY_F9,
 151        [68]     = KEY_F10,
 152        [69]     = KEY_ESC,
 153        [70]     = KEY_DELETE,
 154        [71]     = KEY_KP7,
 155        [72]     = KEY_KP8,
 156        [73]     = KEY_KP9,
 157        [74]     = KEY_KPMINUS,
 158        [75]     = KEY_KP4,
 159        [76]     = KEY_KP5,
 160        [77]     = KEY_KP6,
 161        [78]     = KEY_KPPLUS,
 162        [79]     = KEY_KP1,
 163        [80]     = KEY_KP2,
 164        [81]     = KEY_KP3,
 165        [82]     = KEY_KP0,
 166        [83]     = KEY_KPDOT,
 167        [90]     = KEY_KPLEFTPAREN,
 168        [91]     = KEY_KPRIGHTPAREN,
 169        [92]     = KEY_KPASTERISK,      /* FIXME */
 170        [93]     = KEY_KPASTERISK,
 171        [94]     = KEY_KPPLUS,
 172        [95]     = KEY_HELP,
 173        [96]     = KEY_102ND,
 174        [97]     = KEY_KPASTERISK,      /* FIXME */
 175        [98]     = KEY_KPSLASH,
 176        [99]     = KEY_KPLEFTPAREN,
 177        [100]    = KEY_KPRIGHTPAREN,
 178        [101]    = KEY_KPSLASH,
 179        [102]    = KEY_KPASTERISK,
 180        [103]    = KEY_UP,
 181        [104]    = KEY_KPASTERISK,      /* FIXME */
 182        [105]    = KEY_LEFT,
 183        [106]    = KEY_RIGHT,
 184        [107]    = KEY_KPASTERISK,      /* FIXME */
 185        [108]    = KEY_DOWN,
 186        [109]    = KEY_KPASTERISK,      /* FIXME */
 187        [110]    = KEY_KPASTERISK,      /* FIXME */
 188        [111]    = KEY_KPASTERISK,      /* FIXME */
 189        [112]    = KEY_KPASTERISK,      /* FIXME */
 190        [113]    = KEY_KPASTERISK       /* FIXME */
 191};
 192
 193static struct input_dev *atakbd_dev;
 194
 195static void atakbd_interrupt(unsigned char scancode, char down)
 196{
 197
 198        if (scancode < 0x72) {          /* scancodes < 0xf2 are keys */
 199
 200                // report raw events here?
 201
 202                scancode = atakbd_keycode[scancode];
 203
 204                if (scancode == KEY_CAPSLOCK) { /* CapsLock is a toggle switch key on Amiga */
 205                        input_report_key(atakbd_dev, scancode, 1);
 206                        input_report_key(atakbd_dev, scancode, 0);
 207                        input_sync(atakbd_dev);
 208                } else {
 209                        input_report_key(atakbd_dev, scancode, down);
 210                        input_sync(atakbd_dev);
 211                }
 212        } else                          /* scancodes >= 0xf2 are mouse data, most likely */
 213                printk(KERN_INFO "atakbd: unhandled scancode %x\n", scancode);
 214
 215        return;
 216}
 217
 218static int __init atakbd_init(void)
 219{
 220        int i, error;
 221
 222        if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
 223                return -ENODEV;
 224
 225        // need to init core driver if not already done so
 226        error = atari_keyb_init();
 227        if (error)
 228                return error;
 229
 230        atakbd_dev = input_allocate_device();
 231        if (!atakbd_dev)
 232                return -ENOMEM;
 233
 234        atakbd_dev->name = "Atari Keyboard";
 235        atakbd_dev->phys = "atakbd/input0";
 236        atakbd_dev->id.bustype = BUS_HOST;
 237        atakbd_dev->id.vendor = 0x0001;
 238        atakbd_dev->id.product = 0x0001;
 239        atakbd_dev->id.version = 0x0100;
 240
 241        atakbd_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
 242        atakbd_dev->keycode = atakbd_keycode;
 243        atakbd_dev->keycodesize = sizeof(unsigned char);
 244        atakbd_dev->keycodemax = ARRAY_SIZE(atakbd_keycode);
 245
 246        for (i = 1; i < 0x72; i++) {
 247                set_bit(atakbd_keycode[i], atakbd_dev->keybit);
 248        }
 249
 250        /* error check */
 251        error = input_register_device(atakbd_dev);
 252        if (error) {
 253                input_free_device(atakbd_dev);
 254                return error;
 255        }
 256
 257        atari_input_keyboard_interrupt_hook = atakbd_interrupt;
 258
 259        return 0;
 260}
 261
 262static void __exit atakbd_exit(void)
 263{
 264        atari_input_keyboard_interrupt_hook = NULL;
 265        input_unregister_device(atakbd_dev);
 266}
 267
 268module_init(atakbd_init);
 269module_exit(atakbd_exit);
 270