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  * 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
  54 MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
  55 MODULE_DESCRIPTION("Atari keyboard driver");
  56 MODULE_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
  82 static 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_BACKSLASH,       /* FIXME: '<' */
 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
 193 static struct input_dev *atakbd_dev;
 194
 195 static 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
 218 static int __init atakbd_init(void)
 219 {
 220         int i, error;
 221
 222         if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
 223                 return -EIO;
 224
 225         // need to init core driver if not already done so
 226         if (atari_keyb_init())
 227                 return -ENODEV;
 228
 229         atakbd_dev = input_allocate_device();
 230         if (!atakbd_dev)
 231                 return -ENOMEM;
 232
 233         atakbd_dev->name = "Atari Keyboard";
 234         atakbd_dev->phys = "atakbd/input0";
 235         atakbd_dev->id.bustype = BUS_HOST;
 236         atakbd_dev->id.vendor = 0x0001;
 237         atakbd_dev->id.product = 0x0001;
 238         atakbd_dev->id.version = 0x0100;
 239
 240         atakbd_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
 241         atakbd_dev->keycode = atakbd_keycode;
 242         atakbd_dev->keycodesize = sizeof(unsigned char);
 243         atakbd_dev->keycodemax = ARRAY_SIZE(atakbd_keycode);
 244
 245         for (i = 1; i < 0x72; i++) {
 246                 set_bit(atakbd_keycode[i], atakbd_dev->keybit);
 247         }
 248
 249         /* error check */
 250         error = input_register_device(atakbd_dev);
 251         if (error) {
 252                 input_free_device(atakbd_dev);
 253                 return error;
 254         }
 255
 256         atari_input_keyboard_interrupt_hook = atakbd_interrupt;
 257
 258         return 0;
 259 }
 260
 261 static void __exit atakbd_exit(void)
 262 {
 263         atari_input_keyboard_interrupt_hook = NULL;
 264         input_unregister_device(atakbd_dev);
 265 }
 266
 267 module_init(atakbd_init);
 268 module_exit(atakbd_exit);