1 /* 2 * Copyright (c) 2000-2001 Vojtech Pavlik 3 * 4 * Based on the work of: 5 * Hamish Macdonald 6 */ 7 8 /* 9 * Amiga keyboard driver for Linux/m68k 10 */ 11 12 /* 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2 of the License, or 16 * (at your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License 24 * along with this program; if not, write to the Free Software 25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 26 * 27 * Should you need to contact me, the author, you can do so either by 28 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 29 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 30 */ 31 32 #include <linux/module.h> 33 #include <linux/init.h> 34 #include <linux/input.h> 35 #include <linux/delay.h> 36 #include <linux/interrupt.h> 37 #include <linux/keyboard.h> 38 39 #include <asm/amigaints.h> 40 #include <asm/amigahw.h> 41 #include <asm/irq.h> 42 43 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 44 MODULE_DESCRIPTION("Amiga keyboard driver"); 45 MODULE_LICENSE("GPL"); 46 47 static unsigned char amikbd_keycode[0x78] __initdata = { 48 [0] = KEY_GRAVE, 49 [1] = KEY_1, 50 [2] = KEY_2, 51 [3] = KEY_3, 52 [4] = KEY_4, 53 [5] = KEY_5, 54 [6] = KEY_6, 55 [7] = KEY_7, 56 [8] = KEY_8, 57 [9] = KEY_9, 58 [10] = KEY_0, 59 [11] = KEY_MINUS, 60 [12] = KEY_EQUAL, 61 [13] = KEY_BACKSLASH, 62 [15] = KEY_KP0, 63 [16] = KEY_Q, 64 [17] = KEY_W, 65 [18] = KEY_E, 66 [19] = KEY_R, 67 [20] = KEY_T, 68 [21] = KEY_Y, 69 [22] = KEY_U, 70 [23] = KEY_I, 71 [24] = KEY_O, 72 [25] = KEY_P, 73 [26] = KEY_LEFTBRACE, 74 [27] = KEY_RIGHTBRACE, 75 [29] = KEY_KP1, 76 [30] = KEY_KP2, 77 [31] = KEY_KP3, 78 [32] = KEY_A, 79 [33] = KEY_S, 80 [34] = KEY_D, 81 [35] = KEY_F, 82 [36] = KEY_G, 83 [37] = KEY_H, 84 [38] = KEY_J, 85 [39] = KEY_K, 86 [40] = KEY_L, 87 [41] = KEY_SEMICOLON, 88 [42] = KEY_APOSTROPHE, 89 [43] = KEY_BACKSLASH, 90 [45] = KEY_KP4, 91 [46] = KEY_KP5, 92 [47] = KEY_KP6, 93 [48] = KEY_102ND, 94 [49] = KEY_Z, 95 [50] = KEY_X, 96 [51] = KEY_C, 97 [52] = KEY_V, 98 [53] = KEY_B, 99 [54] = KEY_N, 100 [55] = KEY_M, 101 [56] = KEY_COMMA, 102 [57] = KEY_DOT, 103 [58] = KEY_SLASH, 104 [60] = KEY_KPDOT, 105 [61] = KEY_KP7, 106 [62] = KEY_KP8, 107 [63] = KEY_KP9, 108 [64] = KEY_SPACE, 109 [65] = KEY_BACKSPACE, 110 [66] = KEY_TAB, 111 [67] = KEY_KPENTER, 112 [68] = KEY_ENTER, 113 [69] = KEY_ESC, 114 [70] = KEY_DELETE, 115 [74] = KEY_KPMINUS, 116 [76] = KEY_UP, 117 [77] = KEY_DOWN, 118 [78] = KEY_RIGHT, 119 [79] = KEY_LEFT, 120 [80] = KEY_F1, 121 [81] = KEY_F2, 122 [82] = KEY_F3, 123 [83] = KEY_F4, 124 [84] = KEY_F5, 125 [85] = KEY_F6, 126 [86] = KEY_F7, 127 [87] = KEY_F8, 128 [88] = KEY_F9, 129 [89] = KEY_F10, 130 [90] = KEY_KPLEFTPAREN, 131 [91] = KEY_KPRIGHTPAREN, 132 [92] = KEY_KPSLASH, 133 [93] = KEY_KPASTERISK, 134 [94] = KEY_KPPLUS, 135 [95] = KEY_HELP, 136 [96] = KEY_LEFTSHIFT, 137 [97] = KEY_RIGHTSHIFT, 138 [98] = KEY_CAPSLOCK, 139 [99] = KEY_LEFTCTRL, 140 [100] = KEY_LEFTALT, 141 [101] = KEY_RIGHTALT, 142 [102] = KEY_LEFTMETA, 143 [103] = KEY_RIGHTMETA 144 }; 145 146 static const char *amikbd_messages[8] = { 147 [0] = KERN_ALERT "amikbd: Ctrl-Amiga-Amiga reset warning!!\n", 148 [1] = KERN_WARNING "amikbd: keyboard lost sync\n", 149 [2] = KERN_WARNING "amikbd: keyboard buffer overflow\n", 150 [3] = KERN_WARNING "amikbd: keyboard controller failure\n", 151 [4] = KERN_ERR "amikbd: keyboard selftest failure\n", 152 [5] = KERN_INFO "amikbd: initiate power-up key stream\n", 153 [6] = KERN_INFO "amikbd: terminate power-up key stream\n", 154 [7] = KERN_WARNING "amikbd: keyboard interrupt\n" 155 }; 156 157 static struct input_dev *amikbd_dev; 158 159 static irqreturn_t amikbd_interrupt(int irq, void *dummy) 160 { 161 unsigned char scancode, down; 162 163 scancode = ~ciaa.sdr; /* get and invert scancode (keyboard is active low) */ 164 ciaa.cra |= 0x40; /* switch SP pin to output for handshake */ 165 udelay(85); /* wait until 85 us have expired */ 166 ciaa.cra &= ~0x40; /* switch CIA serial port to input mode */ 167 168 down = !(scancode & 1); /* lowest bit is release bit */ 169 scancode >>= 1; 170 171 if (scancode < 0x78) { /* scancodes < 0x78 are keys */ 172 if (scancode == 98) { /* CapsLock is a toggle switch key on Amiga */ 173 input_report_key(amikbd_dev, scancode, 1); 174 input_report_key(amikbd_dev, scancode, 0); 175 } else { 176 input_report_key(amikbd_dev, scancode, down); 177 } 178 179 input_sync(amikbd_dev); 180 } else /* scancodes >= 0x78 are error codes */ 181 printk(amikbd_messages[scancode - 0x78]); 182 183 return IRQ_HANDLED; 184 } 185 186 static int __init amikbd_init(void) 187 { 188 int i, j, err; 189 190 if (!AMIGAHW_PRESENT(AMI_KEYBOARD)) 191 return -ENODEV; 192 193 if (!request_mem_region(CIAA_PHYSADDR-1+0xb00, 0x100, "amikeyb")) 194 return -EBUSY; 195 196 amikbd_dev = input_allocate_device(); 197 if (!amikbd_dev) { 198 printk(KERN_ERR "amikbd: not enough memory for input device\n"); 199 err = -ENOMEM; 200 goto fail1; 201 } 202 203 amikbd_dev->name = "Amiga Keyboard"; 204 amikbd_dev->phys = "amikbd/input0"; 205 amikbd_dev->id.bustype = BUS_AMIGA; 206 amikbd_dev->id.vendor = 0x0001; 207 amikbd_dev->id.product = 0x0001; 208 amikbd_dev->id.version = 0x0100; 209 210 amikbd_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); 211 212 for (i = 0; i < 0x78; i++) 213 set_bit(i, amikbd_dev->keybit); 214 215 for (i = 0; i < MAX_NR_KEYMAPS; i++) { 216 static u_short temp_map[NR_KEYS] __initdata; 217 if (!key_maps[i]) 218 continue; 219 memset(temp_map, 0, sizeof(temp_map)); 220 for (j = 0; j < 0x78; j++) { 221 if (!amikbd_keycode[j]) 222 continue; 223 temp_map[j] = key_maps[i][amikbd_keycode[j]]; 224 } 225 for (j = 0; j < NR_KEYS; j++) { 226 if (!temp_map[j]) 227 temp_map[j] = 0xf200; 228 } 229 memcpy(key_maps[i], temp_map, sizeof(temp_map)); 230 } 231 ciaa.cra &= ~0x41; /* serial data in, turn off TA */ 232 if (request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd", 233 amikbd_interrupt)) { 234 err = -EBUSY; 235 goto fail2; 236 } 237 238 err = input_register_device(amikbd_dev); 239 if (err) 240 goto fail3; 241 242 return 0; 243 244 fail3: free_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt); 245 fail2: input_free_device(amikbd_dev); 246 fail1: release_mem_region(CIAA_PHYSADDR - 1 + 0xb00, 0x100); 247 return err; 248 } 249 250 static void __exit amikbd_exit(void) 251 { 252 free_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt); 253 input_unregister_device(amikbd_dev); 254 release_mem_region(CIAA_PHYSADDR - 1 + 0xb00, 0x100); 255 } 256 257 module_init(amikbd_init); 258 module_exit(amikbd_exit); 259