amikbd.c revision 2bb71b5a44bfbe0d2066ee041149995f43b52d12
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#include <linux/keyboard.h> 40 41#include <asm/amigaints.h> 42#include <asm/amigahw.h> 43#include <asm/irq.h> 44 45MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 46MODULE_DESCRIPTION("Amiga keyboard driver"); 47MODULE_LICENSE("GPL"); 48 49static unsigned char amikbd_keycode[0x78] __initdata = { 50 [0] = KEY_GRAVE, 51 [1] = KEY_1, 52 [2] = KEY_2, 53 [3] = KEY_3, 54 [4] = KEY_4, 55 [5] = KEY_5, 56 [6] = KEY_6, 57 [7] = KEY_7, 58 [8] = KEY_8, 59 [9] = KEY_9, 60 [10] = KEY_0, 61 [11] = KEY_MINUS, 62 [12] = KEY_EQUAL, 63 [13] = KEY_BACKSLASH, 64 [15] = KEY_KP0, 65 [16] = KEY_Q, 66 [17] = KEY_W, 67 [18] = KEY_E, 68 [19] = KEY_R, 69 [20] = KEY_T, 70 [21] = KEY_Y, 71 [22] = KEY_U, 72 [23] = KEY_I, 73 [24] = KEY_O, 74 [25] = KEY_P, 75 [26] = KEY_LEFTBRACE, 76 [27] = KEY_RIGHTBRACE, 77 [29] = KEY_KP1, 78 [30] = KEY_KP2, 79 [31] = KEY_KP3, 80 [32] = KEY_A, 81 [33] = KEY_S, 82 [34] = KEY_D, 83 [35] = KEY_F, 84 [36] = KEY_G, 85 [37] = KEY_H, 86 [38] = KEY_J, 87 [39] = KEY_K, 88 [40] = KEY_L, 89 [41] = KEY_SEMICOLON, 90 [42] = KEY_APOSTROPHE, 91 [43] = KEY_BACKSLASH, 92 [45] = KEY_KP4, 93 [46] = KEY_KP5, 94 [47] = KEY_KP6, 95 [48] = KEY_102ND, 96 [49] = KEY_Z, 97 [50] = KEY_X, 98 [51] = KEY_C, 99 [52] = KEY_V, 100 [53] = KEY_B, 101 [54] = KEY_N, 102 [55] = KEY_M, 103 [56] = KEY_COMMA, 104 [57] = KEY_DOT, 105 [58] = KEY_SLASH, 106 [60] = KEY_KPDOT, 107 [61] = KEY_KP7, 108 [62] = KEY_KP8, 109 [63] = KEY_KP9, 110 [64] = KEY_SPACE, 111 [65] = KEY_BACKSPACE, 112 [66] = KEY_TAB, 113 [67] = KEY_KPENTER, 114 [68] = KEY_ENTER, 115 [69] = KEY_ESC, 116 [70] = KEY_DELETE, 117 [74] = KEY_KPMINUS, 118 [76] = KEY_UP, 119 [77] = KEY_DOWN, 120 [78] = KEY_RIGHT, 121 [79] = KEY_LEFT, 122 [80] = KEY_F1, 123 [81] = KEY_F2, 124 [82] = KEY_F3, 125 [83] = KEY_F4, 126 [84] = KEY_F5, 127 [85] = KEY_F6, 128 [86] = KEY_F7, 129 [87] = KEY_F8, 130 [88] = KEY_F9, 131 [89] = KEY_F10, 132 [90] = KEY_KPLEFTPAREN, 133 [91] = KEY_KPRIGHTPAREN, 134 [92] = KEY_KPSLASH, 135 [93] = KEY_KPASTERISK, 136 [94] = KEY_KPPLUS, 137 [95] = KEY_HELP, 138 [96] = KEY_LEFTSHIFT, 139 [97] = KEY_RIGHTSHIFT, 140 [98] = KEY_CAPSLOCK, 141 [99] = KEY_LEFTCTRL, 142 [100] = KEY_LEFTALT, 143 [101] = KEY_RIGHTALT, 144 [102] = KEY_LEFTMETA, 145 [103] = KEY_RIGHTMETA 146}; 147 148static const char *amikbd_messages[8] = { 149 [0] = KERN_ALERT "amikbd: Ctrl-Amiga-Amiga reset warning!!\n", 150 [1] = KERN_WARNING "amikbd: keyboard lost sync\n", 151 [2] = KERN_WARNING "amikbd: keyboard buffer overflow\n", 152 [3] = KERN_WARNING "amikbd: keyboard controller failure\n", 153 [4] = KERN_ERR "amikbd: keyboard selftest failure\n", 154 [5] = KERN_INFO "amikbd: initiate power-up key stream\n", 155 [6] = KERN_INFO "amikbd: terminate power-up key stream\n", 156 [7] = KERN_WARNING "amikbd: keyboard interrupt\n" 157}; 158 159static struct input_dev *amikbd_dev; 160 161static irqreturn_t amikbd_interrupt(int irq, void *dummy) 162{ 163 unsigned char scancode, down; 164 165 scancode = ~ciaa.sdr; /* get and invert scancode (keyboard is active low) */ 166 ciaa.cra |= 0x40; /* switch SP pin to output for handshake */ 167 udelay(85); /* wait until 85 us have expired */ 168 ciaa.cra &= ~0x40; /* switch CIA serial port to input mode */ 169 170 down = !(scancode & 1); /* lowest bit is release bit */ 171 scancode >>= 1; 172 173 if (scancode < 0x78) { /* scancodes < 0x78 are keys */ 174 if (scancode == 98) { /* CapsLock is a toggle switch key on Amiga */ 175 input_report_key(amikbd_dev, scancode, 1); 176 input_report_key(amikbd_dev, scancode, 0); 177 } else { 178 input_report_key(amikbd_dev, scancode, down); 179 } 180 181 input_sync(amikbd_dev); 182 } else /* scancodes >= 0x78 are error codes */ 183 printk(amikbd_messages[scancode - 0x78]); 184 185 return IRQ_HANDLED; 186} 187 188static int __init amikbd_init(void) 189{ 190 int i, j, err; 191 192 if (!AMIGAHW_PRESENT(AMI_KEYBOARD)) 193 return -ENODEV; 194 195 if (!request_mem_region(CIAA_PHYSADDR-1+0xb00, 0x100, "amikeyb")) 196 return -EBUSY; 197 198 amikbd_dev = input_allocate_device(); 199 if (!amikbd_dev) { 200 printk(KERN_ERR "amikbd: not enough memory for input device\n"); 201 err = -ENOMEM; 202 goto fail1; 203 } 204 205 amikbd_dev->name = "Amiga Keyboard"; 206 amikbd_dev->phys = "amikbd/input0"; 207 amikbd_dev->id.bustype = BUS_AMIGA; 208 amikbd_dev->id.vendor = 0x0001; 209 amikbd_dev->id.product = 0x0001; 210 amikbd_dev->id.version = 0x0100; 211 212 amikbd_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); 213 214 for (i = 0; i < 0x78; i++) 215 set_bit(i, amikbd_dev->keybit); 216 217 for (i = 0; i < MAX_NR_KEYMAPS; i++) { 218 static u_short temp_map[NR_KEYS] __initdata; 219 if (!key_maps[i]) 220 continue; 221 memset(temp_map, 0, sizeof(temp_map)); 222 for (j = 0; j < 0x78; j++) { 223 if (!amikbd_keycode[j]) 224 continue; 225 temp_map[j] = key_maps[i][amikbd_keycode[j]]; 226 } 227 for (j = 0; j < NR_KEYS; j++) { 228 if (!temp_map[j]) 229 temp_map[j] = 0xf200; 230 } 231 memcpy(key_maps[i], temp_map, sizeof(temp_map)); 232 } 233 ciaa.cra &= ~0x41; /* serial data in, turn off TA */ 234 if (request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd", 235 amikbd_interrupt)) { 236 err = -EBUSY; 237 goto fail2; 238 } 239 240 err = input_register_device(amikbd_dev); 241 if (err) 242 goto fail3; 243 244 return 0; 245 246 fail3: free_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt); 247 fail2: input_free_device(amikbd_dev); 248 fail1: release_mem_region(CIAA_PHYSADDR - 1 + 0xb00, 0x100); 249 return err; 250} 251 252static void __exit amikbd_exit(void) 253{ 254 free_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt); 255 input_unregister_device(amikbd_dev); 256 release_mem_region(CIAA_PHYSADDR - 1 + 0xb00, 0x100); 257} 258 259module_init(amikbd_init); 260module_exit(amikbd_exit); 261