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 #include <linux/platform_device.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] __initdata = { 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 irqreturn_t amikbd_interrupt(int irq, void *data) 159 { 160 struct input_dev *dev = data; 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(dev, scancode, 1); 174 input_report_key(dev, scancode, 0); 175 } else { 176 input_report_key(dev, scancode, down); 177 } 178 179 input_sync(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_probe(struct platform_device *pdev) 187 { 188 struct input_dev *dev; 189 int i, j, err; 190 191 dev = input_allocate_device(); 192 if (!dev) { 193 dev_err(&pdev->dev, "Not enough memory for input device\n"); 194 return -ENOMEM; 195 } 196 197 dev->name = pdev->name; 198 dev->phys = "amikbd/input0"; 199 dev->id.bustype = BUS_AMIGA; 200 dev->id.vendor = 0x0001; 201 dev->id.product = 0x0001; 202 dev->id.version = 0x0100; 203 dev->dev.parent = &pdev->dev; 204 205 dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); 206 207 for (i = 0; i < 0x78; i++) 208 set_bit(i, dev->keybit); 209 210 for (i = 0; i < MAX_NR_KEYMAPS; i++) { 211 static u_short temp_map[NR_KEYS] __initdata; 212 if (!key_maps[i]) 213 continue; 214 memset(temp_map, 0, sizeof(temp_map)); 215 for (j = 0; j < 0x78; j++) { 216 if (!amikbd_keycode[j]) 217 continue; 218 temp_map[j] = key_maps[i][amikbd_keycode[j]]; 219 } 220 for (j = 0; j < NR_KEYS; j++) { 221 if (!temp_map[j]) 222 temp_map[j] = 0xf200; 223 } 224 memcpy(key_maps[i], temp_map, sizeof(temp_map)); 225 } 226 ciaa.cra &= ~0x41; /* serial data in, turn off TA */ 227 err = request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd", 228 dev); 229 if (err) 230 goto fail2; 231 232 err = input_register_device(dev); 233 if (err) 234 goto fail3; 235 236 platform_set_drvdata(pdev, dev); 237 238 return 0; 239 240 fail3: free_irq(IRQ_AMIGA_CIAA_SP, dev); 241 fail2: input_free_device(dev); 242 return err; 243 } 244 245 static int __exit amikbd_remove(struct platform_device *pdev) 246 { 247 struct input_dev *dev = platform_get_drvdata(pdev); 248 249 free_irq(IRQ_AMIGA_CIAA_SP, dev); 250 input_unregister_device(dev); 251 return 0; 252 } 253 254 static struct platform_driver amikbd_driver = { 255 .remove = __exit_p(amikbd_remove), 256 .driver = { 257 .name = "amiga-keyboard", 258 .owner = THIS_MODULE, 259 }, 260 }; 261 262 module_platform_driver_probe(amikbd_driver, amikbd_probe); 263 264 MODULE_ALIAS("platform:amiga-keyboard"); 265