drivers/input/keyboard/atakbd.c

   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
  39 #include <linux/module.h>
  40 #include <linux/init.h>
  41 #include <linux/input.h>
  42 #include <linux/delay.h>
  43 #include <linux/interrupt.h>
  44
  45 #include <asm/atariints.h>
  46 #include <asm/atarihw.h>
  47 #include <asm/atarikb.h>
  48 #include <asm/irq.h>
  49
  50 MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
  51 MODULE_DESCRIPTION("Atari keyboard driver");
  52 MODULE_LICENSE("GPL");
  53
  54 /*
  55  0x47: KP_7     71
  56  0x48: KP_8     72
  57  0x49: KP_9     73
  58  0x62: KP_/     98
  59  0x4b: KP_4     75
  60  0x4c: KP_5     76
  61  0x4d: KP_6     77
  62  0x37: KP_*     55
  63  0x4f: KP_1     79
  64  0x50: KP_2     80
  65  0x51: KP_3     81
  66  0x4a: KP_-     74
  67  0x52: KP_0     82
  68  0x53: KP_.     83
  69  0x4e: KP_+     78
  70
  71  0x67: Up       103
  72  0x6c: Down     108
  73  0x69: Left     105
  74  0x6a: Right    106
  75  */
  76
  77
  78 static unsigned char atakbd_keycode[0x72] = {   /* American layout */
  79         [0]      = KEY_GRAVE,
  80         [1]      = KEY_ESC,
  81         [2]      = KEY_1,
  82         [3]      = KEY_2,
  83         [4]      = KEY_3,
  84         [5]      = KEY_4,
  85         [6]      = KEY_5,
  86         [7]      = KEY_6,
  87         [8]      = KEY_7,
  88         [9]      = KEY_8,
  89         [10]     = KEY_9,
  90         [11]     = KEY_0,
  91         [12]     = KEY_MINUS,
  92         [13]     = KEY_EQUAL,
  93         [14]     = KEY_BACKSPACE,
  94         [15]     = KEY_TAB,
  95         [16]     = KEY_Q,
  96         [17]     = KEY_W,
  97         [18]     = KEY_E,
  98         [19]     = KEY_R,
  99         [20]     = KEY_T,
 100         [21]     = KEY_Y,
 101         [22]     = KEY_U,
 102         [23]     = KEY_I,
 103         [24]     = KEY_O,
 104         [25]     = KEY_P,
 105         [26]     = KEY_LEFTBRACE,
 106         [27]     = KEY_RIGHTBRACE,
 107         [28]     = KEY_ENTER,
 108         [29]     = KEY_LEFTCTRL,
 109         [30]     = KEY_A,
 110         [31]     = KEY_S,
 111         [32]     = KEY_D,
 112         [33]     = KEY_F,
 113         [34]     = KEY_G,
 114         [35]     = KEY_H,
 115         [36]     = KEY_J,
 116         [37]     = KEY_K,
 117         [38]     = KEY_L,
 118         [39]     = KEY_SEMICOLON,
 119         [40]     = KEY_APOSTROPHE,
 120         [41]     = KEY_BACKSLASH,       /* FIXME, '#' */
 121         [42]     = KEY_LEFTSHIFT,
 122         [43]     = KEY_GRAVE,           /* FIXME: '~' */
 123         [44]     = KEY_Z,
 124         [45]     = KEY_X,
 125         [46]     = KEY_C,
 126         [47]     = KEY_V,
 127         [48]     = KEY_B,
 128         [49]     = KEY_N,
 129         [50]     = KEY_M,
 130         [51]     = KEY_COMMA,
 131         [52]     = KEY_DOT,
 132         [53]     = KEY_SLASH,
 133         [54]     = KEY_RIGHTSHIFT,
 134         [55]     = KEY_KPASTERISK,
 135         [56]     = KEY_LEFTALT,
 136         [57]     = KEY_SPACE,
 137         [58]     = KEY_CAPSLOCK,
 138         [59]     = KEY_F1,
 139         [60]     = KEY_F2,
 140         [61]     = KEY_F3,
 141         [62]     = KEY_F4,
 142         [63]     = KEY_F5,
 143         [64]     = KEY_F6,
 144         [65]     = KEY_F7,
 145         [66]     = KEY_F8,
 146         [67]     = KEY_F9,
 147         [68]     = KEY_F10,
 148         [69]     = KEY_ESC,
 149         [70]     = KEY_DELETE,
 150         [71]     = KEY_KP7,
 151         [72]     = KEY_KP8,
 152         [73]     = KEY_KP9,
 153         [74]     = KEY_KPMINUS,
 154         [75]     = KEY_KP4,
 155         [76]     = KEY_KP5,
 156         [77]     = KEY_KP6,
 157         [78]     = KEY_KPPLUS,
 158         [79]     = KEY_KP1,
 159         [80]     = KEY_KP2,
 160         [81]     = KEY_KP3,
 161         [82]     = KEY_KP0,
 162         [83]     = KEY_KPDOT,
 163         [90]     = KEY_KPLEFTPAREN,
 164         [91]     = KEY_KPRIGHTPAREN,
 165         [92]     = KEY_KPASTERISK,      /* FIXME */
 166         [93]     = KEY_KPASTERISK,
 167         [94]     = KEY_KPPLUS,
 168         [95]     = KEY_HELP,
 169         [96]     = KEY_102ND,
 170         [97]     = KEY_KPASTERISK,      /* FIXME */
 171         [98]     = KEY_KPSLASH,
 172         [99]     = KEY_KPLEFTPAREN,
 173         [100]    = KEY_KPRIGHTPAREN,
 174         [101]    = KEY_KPSLASH,
 175         [102]    = KEY_KPASTERISK,
 176         [103]    = KEY_UP,
 177         [104]    = KEY_KPASTERISK,      /* FIXME */
 178         [105]    = KEY_LEFT,
 179         [106]    = KEY_RIGHT,
 180         [107]    = KEY_KPASTERISK,      /* FIXME */
 181         [108]    = KEY_DOWN,
 182         [109]    = KEY_KPASTERISK,      /* FIXME */
 183         [110]    = KEY_KPASTERISK,      /* FIXME */
 184         [111]    = KEY_KPASTERISK,      /* FIXME */
 185         [112]    = KEY_KPASTERISK,      /* FIXME */
 186         [113]    = KEY_KPASTERISK       /* FIXME */
 187 };
 188
 189 static struct input_dev *atakbd_dev;
 190
 191 static void atakbd_interrupt(unsigned char scancode, char down)
 192 {
 193
 194         if (scancode < 0x72) {          /* scancodes < 0xf2 are keys */
 195
 196                 // report raw events here?
 197
 198                 scancode = atakbd_keycode[scancode];
 199
 200                 if (scancode == KEY_CAPSLOCK) { /* CapsLock is a toggle switch key on Amiga */
 201                         input_report_key(atakbd_dev, scancode, 1);
 202                         input_report_key(atakbd_dev, scancode, 0);
 203                         input_sync(atakbd_dev);
 204                 } else {
 205                         input_report_key(atakbd_dev, scancode, down);
 206                         input_sync(atakbd_dev);
 207                 }
 208         } else                          /* scancodes >= 0xf2 are mouse data, most likely */
 209                 printk(KERN_INFO "atakbd: unhandled scancode %x\n", scancode);
 210
 211         return;
 212 }
 213
 214 static int __init atakbd_init(void)
 215 {
 216         int i, error;
 217
 218         if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
 219                 return -ENODEV;
 220
 221         // need to init core driver if not already done so
 222         error = atari_keyb_init();
 223         if (error)
 224                 return error;
 225
 226         atakbd_dev = input_allocate_device();
 227         if (!atakbd_dev)
 228                 return -ENOMEM;
 229
 230         atakbd_dev->name = "Atari Keyboard";
 231         atakbd_dev->phys = "atakbd/input0";
 232         atakbd_dev->id.bustype = BUS_HOST;
 233         atakbd_dev->id.vendor = 0x0001;
 234         atakbd_dev->id.product = 0x0001;
 235         atakbd_dev->id.version = 0x0100;
 236
 237         atakbd_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
 238         atakbd_dev->keycode = atakbd_keycode;
 239         atakbd_dev->keycodesize = sizeof(unsigned char);
 240         atakbd_dev->keycodemax = ARRAY_SIZE(atakbd_keycode);
 241
 242         for (i = 1; i < 0x72; i++) {
 243                 set_bit(atakbd_keycode[i], atakbd_dev->keybit);
 244         }
 245
 246         /* error check */
 247         error = input_register_device(atakbd_dev);
 248         if (error) {
 249                 input_free_device(atakbd_dev);
 250                 return error;
 251         }
 252
 253         atari_input_keyboard_interrupt_hook = atakbd_interrupt;
 254
 255         return 0;
 256 }
 257
 258 static void __exit atakbd_exit(void)
 259 {
 260         atari_input_keyboard_interrupt_hook = NULL;
 261         input_unregister_device(atakbd_dev);
 262 }
 263
 264 module_init(atakbd_init);
 265 module_exit(atakbd_exit);