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 28 #include <linux/module.h> 29 #include <linux/init.h> 30 #include <linux/input.h> 31 #include <linux/delay.h> 32 #include <linux/interrupt.h> 33 #include <linux/keyboard.h> 34 #include <linux/platform_device.h> 35 36 #include <asm/amigaints.h> 37 #include <asm/amigahw.h> 38 #include <asm/irq.h> 39 40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 41 MODULE_DESCRIPTION("Amiga keyboard driver"); 42 MODULE_LICENSE("GPL"); 43 44 #ifdef CONFIG_HW_CONSOLE 45 static unsigned char amikbd_keycode[0x78] __initdata = { 46 [0] = KEY_GRAVE, 47 [1] = KEY_1, 48 [2] = KEY_2, 49 [3] = KEY_3, 50 [4] = KEY_4, 51 [5] = KEY_5, 52 [6] = KEY_6, 53 [7] = KEY_7, 54 [8] = KEY_8, 55 [9] = KEY_9, 56 [10] = KEY_0, 57 [11] = KEY_MINUS, 58 [12] = KEY_EQUAL, 59 [13] = KEY_BACKSLASH, 60 [15] = KEY_KP0, 61 [16] = KEY_Q, 62 [17] = KEY_W, 63 [18] = KEY_E, 64 [19] = KEY_R, 65 [20] = KEY_T, 66 [21] = KEY_Y, 67 [22] = KEY_U, 68 [23] = KEY_I, 69 [24] = KEY_O, 70 [25] = KEY_P, 71 [26] = KEY_LEFTBRACE, 72 [27] = KEY_RIGHTBRACE, 73 [29] = KEY_KP1, 74 [30] = KEY_KP2, 75 [31] = KEY_KP3, 76 [32] = KEY_A, 77 [33] = KEY_S, 78 [34] = KEY_D, 79 [35] = KEY_F, 80 [36] = KEY_G, 81 [37] = KEY_H, 82 [38] = KEY_J, 83 [39] = KEY_K, 84 [40] = KEY_L, 85 [41] = KEY_SEMICOLON, 86 [42] = KEY_APOSTROPHE, 87 [43] = KEY_BACKSLASH, 88 [45] = KEY_KP4, 89 [46] = KEY_KP5, 90 [47] = KEY_KP6, 91 [48] = KEY_102ND, 92 [49] = KEY_Z, 93 [50] = KEY_X, 94 [51] = KEY_C, 95 [52] = KEY_V, 96 [53] = KEY_B, 97 [54] = KEY_N, 98 [55] = KEY_M, 99 [56] = KEY_COMMA, 100 [57] = KEY_DOT, 101 [58] = KEY_SLASH, 102 [60] = KEY_KPDOT, 103 [61] = KEY_KP7, 104 [62] = KEY_KP8, 105 [63] = KEY_KP9, 106 [64] = KEY_SPACE, 107 [65] = KEY_BACKSPACE, 108 [66] = KEY_TAB, 109 [67] = KEY_KPENTER, 110 [68] = KEY_ENTER, 111 [69] = KEY_ESC, 112 [70] = KEY_DELETE, 113 [74] = KEY_KPMINUS, 114 [76] = KEY_UP, 115 [77] = KEY_DOWN, 116 [78] = KEY_RIGHT, 117 [79] = KEY_LEFT, 118 [80] = KEY_F1, 119 [81] = KEY_F2, 120 [82] = KEY_F3, 121 [83] = KEY_F4, 122 [84] = KEY_F5, 123 [85] = KEY_F6, 124 [86] = KEY_F7, 125 [87] = KEY_F8, 126 [88] = KEY_F9, 127 [89] = KEY_F10, 128 [90] = KEY_KPLEFTPAREN, 129 [91] = KEY_KPRIGHTPAREN, 130 [92] = KEY_KPSLASH, 131 [93] = KEY_KPASTERISK, 132 [94] = KEY_KPPLUS, 133 [95] = KEY_HELP, 134 [96] = KEY_LEFTSHIFT, 135 [97] = KEY_RIGHTSHIFT, 136 [98] = KEY_CAPSLOCK, 137 [99] = KEY_LEFTCTRL, 138 [100] = KEY_LEFTALT, 139 [101] = KEY_RIGHTALT, 140 [102] = KEY_LEFTMETA, 141 [103] = KEY_RIGHTMETA 142 }; 143 144 static void __init amikbd_init_console_keymaps(void) 145 { 146 /* We can spare 512 bytes on stack for temp_map in init path. */ 147 unsigned short temp_map[NR_KEYS]; 148 int i, j; 149 150 for (i = 0; i < MAX_NR_KEYMAPS; i++) { 151 if (!key_maps[i]) 152 continue; 153 memset(temp_map, 0, sizeof(temp_map)); 154 for (j = 0; j < 0x78; j++) { 155 if (!amikbd_keycode[j]) 156 continue; 157 temp_map[j] = key_maps[i][amikbd_keycode[j]]; 158 } 159 for (j = 0; j < NR_KEYS; j++) { 160 if (!temp_map[j]) 161 temp_map[j] = 0xf200; 162 } 163 memcpy(key_maps[i], temp_map, sizeof(temp_map)); 164 } 165 } 166 #else /* !CONFIG_HW_CONSOLE */ 167 static inline void amikbd_init_console_keymaps(void) {} 168 #endif /* !CONFIG_HW_CONSOLE */ 169 170 static const char *amikbd_messages[8] = { 171 [0] = KERN_ALERT "amikbd: Ctrl-Amiga-Amiga reset warning!!\n", 172 [1] = KERN_WARNING "amikbd: keyboard lost sync\n", 173 [2] = KERN_WARNING "amikbd: keyboard buffer overflow\n", 174 [3] = KERN_WARNING "amikbd: keyboard controller failure\n", 175 [4] = KERN_ERR "amikbd: keyboard selftest failure\n", 176 [5] = KERN_INFO "amikbd: initiate power-up key stream\n", 177 [6] = KERN_INFO "amikbd: terminate power-up key stream\n", 178 [7] = KERN_WARNING "amikbd: keyboard interrupt\n" 179 }; 180 181 static irqreturn_t amikbd_interrupt(int irq, void *data) 182 { 183 struct input_dev *dev = data; 184 unsigned char scancode, down; 185 186 scancode = ~ciaa.sdr; /* get and invert scancode (keyboard is active low) */ 187 ciaa.cra |= 0x40; /* switch SP pin to output for handshake */ 188 udelay(85); /* wait until 85 us have expired */ 189 ciaa.cra &= ~0x40; /* switch CIA serial port to input mode */ 190 191 down = !(scancode & 1); /* lowest bit is release bit */ 192 scancode >>= 1; 193 194 if (scancode < 0x78) { /* scancodes < 0x78 are keys */ 195 if (scancode == 98) { /* CapsLock is a toggle switch key on Amiga */ 196 input_report_key(dev, scancode, 1); 197 input_report_key(dev, scancode, 0); 198 } else { 199 input_report_key(dev, scancode, down); 200 } 201 202 input_sync(dev); 203 } else /* scancodes >= 0x78 are error codes */ 204 printk(amikbd_messages[scancode - 0x78]); 205 206 return IRQ_HANDLED; 207 } 208 209 static int __init amikbd_probe(struct platform_device *pdev) 210 { 211 struct input_dev *dev; 212 int i, err; 213 214 dev = input_allocate_device(); 215 if (!dev) { 216 dev_err(&pdev->dev, "Not enough memory for input device\n"); 217 return -ENOMEM; 218 } 219 220 dev->name = pdev->name; 221 dev->phys = "amikbd/input0"; 222 dev->id.bustype = BUS_AMIGA; 223 dev->id.vendor = 0x0001; 224 dev->id.product = 0x0001; 225 dev->id.version = 0x0100; 226 dev->dev.parent = &pdev->dev; 227 228 dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); 229 230 for (i = 0; i < 0x78; i++) 231 set_bit(i, dev->keybit); 232 233 amikbd_init_console_keymaps(); 234 235 ciaa.cra &= ~0x41; /* serial data in, turn off TA */ 236 err = request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd", 237 dev); 238 if (err) 239 goto fail2; 240 241 err = input_register_device(dev); 242 if (err) 243 goto fail3; 244 245 platform_set_drvdata(pdev, dev); 246 247 return 0; 248 249 fail3: free_irq(IRQ_AMIGA_CIAA_SP, dev); 250 fail2: input_free_device(dev); 251 return err; 252 } 253 254 static int __exit amikbd_remove(struct platform_device *pdev) 255 { 256 struct input_dev *dev = platform_get_drvdata(pdev); 257 258 free_irq(IRQ_AMIGA_CIAA_SP, dev); 259 input_unregister_device(dev); 260 return 0; 261 } 262 263 static struct platform_driver amikbd_driver = { 264 .remove = __exit_p(amikbd_remove), 265 .driver = { 266 .name = "amiga-keyboard", 267 }, 268 }; 269 270 module_platform_driver_probe(amikbd_driver, amikbd_probe); 271 272 MODULE_ALIAS("platform:amiga-keyboard"); 273