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 #ifdef CONFIG_HW_CONSOLE 49 static 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 }; 147 148 static void __init amikbd_init_console_keymaps(void) 149 { 150 /* We can spare 512 bytes on stack for temp_map in init path. */ 151 unsigned short temp_map[NR_KEYS]; 152 int i, j; 153 154 for (i = 0; i < MAX_NR_KEYMAPS; i++) { 155 if (!key_maps[i]) 156 continue; 157 memset(temp_map, 0, sizeof(temp_map)); 158 for (j = 0; j < 0x78; j++) { 159 if (!amikbd_keycode[j]) 160 continue; 161 temp_map[j] = key_maps[i][amikbd_keycode[j]]; 162 } 163 for (j = 0; j < NR_KEYS; j++) { 164 if (!temp_map[j]) 165 temp_map[j] = 0xf200; 166 } 167 memcpy(key_maps[i], temp_map, sizeof(temp_map)); 168 } 169 } 170 #else /* !CONFIG_HW_CONSOLE */ 171 static inline void amikbd_init_console_keymaps(void) {} 172 #endif /* !CONFIG_HW_CONSOLE */ 173 174 static const char *amikbd_messages[8] = { 175 [0] = KERN_ALERT "amikbd: Ctrl-Amiga-Amiga reset warning!!\n", 176 [1] = KERN_WARNING "amikbd: keyboard lost sync\n", 177 [2] = KERN_WARNING "amikbd: keyboard buffer overflow\n", 178 [3] = KERN_WARNING "amikbd: keyboard controller failure\n", 179 [4] = KERN_ERR "amikbd: keyboard selftest failure\n", 180 [5] = KERN_INFO "amikbd: initiate power-up key stream\n", 181 [6] = KERN_INFO "amikbd: terminate power-up key stream\n", 182 [7] = KERN_WARNING "amikbd: keyboard interrupt\n" 183 }; 184 185 static irqreturn_t amikbd_interrupt(int irq, void *data) 186 { 187 struct input_dev *dev = data; 188 unsigned char scancode, down; 189 190 scancode = ~ciaa.sdr; /* get and invert scancode (keyboard is active low) */ 191 ciaa.cra |= 0x40; /* switch SP pin to output for handshake */ 192 udelay(85); /* wait until 85 us have expired */ 193 ciaa.cra &= ~0x40; /* switch CIA serial port to input mode */ 194 195 down = !(scancode & 1); /* lowest bit is release bit */ 196 scancode >>= 1; 197 198 if (scancode < 0x78) { /* scancodes < 0x78 are keys */ 199 if (scancode == 98) { /* CapsLock is a toggle switch key on Amiga */ 200 input_report_key(dev, scancode, 1); 201 input_report_key(dev, scancode, 0); 202 } else { 203 input_report_key(dev, scancode, down); 204 } 205 206 input_sync(dev); 207 } else /* scancodes >= 0x78 are error codes */ 208 printk(amikbd_messages[scancode - 0x78]); 209 210 return IRQ_HANDLED; 211 } 212 213 static int __init amikbd_probe(struct platform_device *pdev) 214 { 215 struct input_dev *dev; 216 int i, err; 217 218 dev = input_allocate_device(); 219 if (!dev) { 220 dev_err(&pdev->dev, "Not enough memory for input device\n"); 221 return -ENOMEM; 222 } 223 224 dev->name = pdev->name; 225 dev->phys = "amikbd/input0"; 226 dev->id.bustype = BUS_AMIGA; 227 dev->id.vendor = 0x0001; 228 dev->id.product = 0x0001; 229 dev->id.version = 0x0100; 230 dev->dev.parent = &pdev->dev; 231 232 dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); 233 234 for (i = 0; i < 0x78; i++) 235 set_bit(i, dev->keybit); 236 237 amikbd_init_console_keymaps(); 238 239 ciaa.cra &= ~0x41; /* serial data in, turn off TA */ 240 err = request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd", 241 dev); 242 if (err) 243 goto fail2; 244 245 err = input_register_device(dev); 246 if (err) 247 goto fail3; 248 249 platform_set_drvdata(pdev, dev); 250 251 return 0; 252 253 fail3: free_irq(IRQ_AMIGA_CIAA_SP, dev); 254 fail2: input_free_device(dev); 255 return err; 256 } 257 258 static int __exit amikbd_remove(struct platform_device *pdev) 259 { 260 struct input_dev *dev = platform_get_drvdata(pdev); 261 262 free_irq(IRQ_AMIGA_CIAA_SP, dev); 263 input_unregister_device(dev); 264 return 0; 265 } 266 267 static struct platform_driver amikbd_driver = { 268 .remove = __exit_p(amikbd_remove), 269 .driver = { 270 .name = "amiga-keyboard", 271 }, 272 }; 273 274 module_platform_driver_probe(amikbd_driver, amikbd_probe); 275 276 MODULE_ALIAS("platform:amiga-keyboard"); 277