1 /* 2 * $Id: amikbd.c,v 1.13 2002/02/01 16:02:24 vojtech Exp $ 3 * 4 * Copyright (c) 2000-2001 Vojtech Pavlik 5 * 6 * Based on the work of: 7 * Hamish Macdonald 8 */ 9 10 /* 11 * Amiga keyboard driver for Linux/m68k 12 */ 13 14 /* 15 * This program is free software; you can redistribute it and/or modify 16 * it under the terms of the GNU General Public License as published by 17 * the Free Software Foundation; either version 2 of the License, or 18 * (at your option) any later version. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 * 25 * You should have received a copy of the GNU General Public License 26 * along with this program; if not, write to the Free Software 27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 28 * 29 * Should you need to contact me, the author, you can do so either by 30 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 31 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 32 */ 33 34 #include <linux/module.h> 35 #include <linux/init.h> 36 #include <linux/input.h> 37 #include <linux/delay.h> 38 #include <linux/interrupt.h> 39 40 #include <asm/amigaints.h> 41 #include <asm/amigahw.h> 42 #include <asm/irq.h> 43 44 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 45 MODULE_DESCRIPTION("Amiga keyboard driver"); 46 MODULE_LICENSE("GPL"); 47 48 static unsigned char amikbd_keycode[0x78] = { 49 [0] = KEY_GRAVE, 50 [1] = KEY_1, 51 [2] = KEY_2, 52 [3] = KEY_3, 53 [4] = KEY_4, 54 [5] = KEY_5, 55 [6] = KEY_6, 56 [7] = KEY_7, 57 [8] = KEY_8, 58 [9] = KEY_9, 59 [10] = KEY_0, 60 [11] = KEY_MINUS, 61 [12] = KEY_EQUAL, 62 [13] = KEY_BACKSLASH, 63 [15] = KEY_KP0, 64 [16] = KEY_Q, 65 [17] = KEY_W, 66 [18] = KEY_E, 67 [19] = KEY_R, 68 [20] = KEY_T, 69 [21] = KEY_Y, 70 [22] = KEY_U, 71 [23] = KEY_I, 72 [24] = KEY_O, 73 [25] = KEY_P, 74 [26] = KEY_LEFTBRACE, 75 [27] = KEY_RIGHTBRACE, 76 [29] = KEY_KP1, 77 [30] = KEY_KP2, 78 [31] = KEY_KP3, 79 [32] = KEY_A, 80 [33] = KEY_S, 81 [34] = KEY_D, 82 [35] = KEY_F, 83 [36] = KEY_G, 84 [37] = KEY_H, 85 [38] = KEY_J, 86 [39] = KEY_K, 87 [40] = KEY_L, 88 [41] = KEY_SEMICOLON, 89 [42] = KEY_APOSTROPHE, 90 [43] = KEY_BACKSLASH, 91 [45] = KEY_KP4, 92 [46] = KEY_KP5, 93 [47] = KEY_KP6, 94 [48] = KEY_102ND, 95 [49] = KEY_Z, 96 [50] = KEY_X, 97 [51] = KEY_C, 98 [52] = KEY_V, 99 [53] = KEY_B, 100 [54] = KEY_N, 101 [55] = KEY_M, 102 [56] = KEY_COMMA, 103 [57] = KEY_DOT, 104 [58] = KEY_SLASH, 105 [60] = KEY_KPDOT, 106 [61] = KEY_KP7, 107 [62] = KEY_KP8, 108 [63] = KEY_KP9, 109 [64] = KEY_SPACE, 110 [65] = KEY_BACKSPACE, 111 [66] = KEY_TAB, 112 [67] = KEY_KPENTER, 113 [68] = KEY_ENTER, 114 [69] = KEY_ESC, 115 [70] = KEY_DELETE, 116 [74] = KEY_KPMINUS, 117 [76] = KEY_UP, 118 [77] = KEY_DOWN, 119 [78] = KEY_RIGHT, 120 [79] = KEY_LEFT, 121 [80] = KEY_F1, 122 [81] = KEY_F2, 123 [82] = KEY_F3, 124 [83] = KEY_F4, 125 [84] = KEY_F5, 126 [85] = KEY_F6, 127 [86] = KEY_F7, 128 [87] = KEY_F8, 129 [88] = KEY_F9, 130 [89] = KEY_F10, 131 [90] = KEY_KPLEFTPAREN, 132 [91] = KEY_KPRIGHTPAREN, 133 [92] = KEY_KPSLASH, 134 [93] = KEY_KPASTERISK, 135 [94] = KEY_KPPLUS, 136 [95] = KEY_HELP, 137 [96] = KEY_LEFTSHIFT, 138 [97] = KEY_RIGHTSHIFT, 139 [98] = KEY_CAPSLOCK, 140 [99] = KEY_LEFTCTRL, 141 [100] = KEY_LEFTALT, 142 [101] = KEY_RIGHTALT, 143 [102] = KEY_LEFTMETA, 144 [103] = KEY_RIGHTMETA 145 }; 146 147 static const char *amikbd_messages[8] = { 148 [0] = KERN_ALERT "amikbd: Ctrl-Amiga-Amiga reset warning!!\n", 149 [1] = KERN_WARNING "amikbd: keyboard lost sync\n", 150 [2] = KERN_WARNING "amikbd: keyboard buffer overflow\n", 151 [3] = KERN_WARNING "amikbd: keyboard controller failure\n", 152 [4] = KERN_ERR "amikbd: keyboard selftest failure\n", 153 [5] = KERN_INFO "amikbd: initiate power-up key stream\n", 154 [6] = KERN_INFO "amikbd: terminate power-up key stream\n", 155 [7] = KERN_WARNING "amikbd: keyboard interrupt\n" 156 }; 157 158 static struct input_dev amikbd_dev; 159 160 static char *amikbd_name = "Amiga keyboard"; 161 static char *amikbd_phys = "amikbd/input0"; 162 163 static irqreturn_t amikbd_interrupt(int irq, void *dummy, struct pt_regs *fp) 164 { 165 unsigned char scancode, down; 166 167 scancode = ~ciaa.sdr; /* get and invert scancode (keyboard is active low) */ 168 ciaa.cra |= 0x40; /* switch SP pin to output for handshake */ 169 udelay(85); /* wait until 85 us have expired */ 170 ciaa.cra &= ~0x40; /* switch CIA serial port to input mode */ 171 172 down = !(scancode & 1); /* lowest bit is release bit */ 173 scancode >>= 1; 174 175 if (scancode < 0x78) { /* scancodes < 0x78 are keys */ 176 177 scancode = amikbd_keycode[scancode]; 178 179 input_regs(&amikbd_dev, fp); 180 181 if (scancode == KEY_CAPSLOCK) { /* CapsLock is a toggle switch key on Amiga */ 182 input_report_key(&amikbd_dev, scancode, 1); 183 input_report_key(&amikbd_dev, scancode, 0); 184 input_sync(&amikbd_dev); 185 } else { 186 input_report_key(&amikbd_dev, scancode, down); 187 input_sync(&amikbd_dev); 188 } 189 } else /* scancodes >= 0x78 are error codes */ 190 printk(amikbd_messages[scancode - 0x78]); 191 192 return IRQ_HANDLED; 193 } 194 195 static int __init amikbd_init(void) 196 { 197 int i; 198 199 if (!AMIGAHW_PRESENT(AMI_KEYBOARD)) 200 return -EIO; 201 202 if (!request_mem_region(CIAA_PHYSADDR-1+0xb00, 0x100, "amikeyb")) 203 return -EBUSY; 204 205 init_input_dev(&amikbd_dev); 206 207 amikbd_dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP); 208 amikbd_dev.keycode = amikbd_keycode; 209 amikbd_dev.keycodesize = sizeof(unsigned char); 210 amikbd_dev.keycodemax = ARRAY_SIZE(amikbd_keycode); 211 212 for (i = 0; i < 0x78; i++) 213 if (amikbd_keycode[i]) 214 set_bit(amikbd_keycode[i], amikbd_dev.keybit); 215 216 ciaa.cra &= ~0x41; /* serial data in, turn off TA */ 217 request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd", amikbd_interrupt); 218 219 amikbd_dev.name = amikbd_name; 220 amikbd_dev.phys = amikbd_phys; 221 amikbd_dev.id.bustype = BUS_AMIGA; 222 amikbd_dev.id.vendor = 0x0001; 223 amikbd_dev.id.product = 0x0001; 224 amikbd_dev.id.version = 0x0100; 225 226 input_register_device(&amikbd_dev); 227 228 printk(KERN_INFO "input: %s\n", amikbd_name); 229 230 return 0; 231 } 232 233 static void __exit amikbd_exit(void) 234 { 235 input_unregister_device(&amikbd_dev); 236 free_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt); 237 release_mem_region(CIAA_PHYSADDR-1+0xb00, 0x100); 238 } 239 240 module_init(amikbd_init); 241 module_exit(amikbd_exit); 242