atakbd.c (4860B)
1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * atakbd.c 4 * 5 * Copyright (c) 2005 Michael Schmitz 6 * 7 * Based on amikbd.c, which is 8 * 9 * Copyright (c) 2000-2001 Vojtech Pavlik 10 * 11 * Based on the work of: 12 * Hamish Macdonald 13 */ 14 15/* 16 * Atari keyboard driver for Linux/m68k 17 * 18 * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c 19 * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard 20 * interrupt is shared with the MIDI ACIA so MIDI data also get handled there). 21 * This driver only deals with handing key events off to the input layer. 22 */ 23 24/* 25 */ 26 27#include <linux/module.h> 28#include <linux/init.h> 29#include <linux/input.h> 30#include <linux/delay.h> 31#include <linux/interrupt.h> 32 33#include <asm/atariints.h> 34#include <asm/atarihw.h> 35#include <asm/atarikb.h> 36#include <asm/irq.h> 37 38MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>"); 39MODULE_DESCRIPTION("Atari keyboard driver"); 40MODULE_LICENSE("GPL"); 41 42/* 43 0x47: KP_7 71 44 0x48: KP_8 72 45 0x49: KP_9 73 46 0x62: KP_/ 98 47 0x4b: KP_4 75 48 0x4c: KP_5 76 49 0x4d: KP_6 77 50 0x37: KP_* 55 51 0x4f: KP_1 79 52 0x50: KP_2 80 53 0x51: KP_3 81 54 0x4a: KP_- 74 55 0x52: KP_0 82 56 0x53: KP_. 83 57 0x4e: KP_+ 78 58 59 0x67: Up 103 60 0x6c: Down 108 61 0x69: Left 105 62 0x6a: Right 106 63 */ 64 65 66static unsigned char atakbd_keycode[0x73] = { /* American layout */ 67 [1] = KEY_ESC, 68 [2] = KEY_1, 69 [3] = KEY_2, 70 [4] = KEY_3, 71 [5] = KEY_4, 72 [6] = KEY_5, 73 [7] = KEY_6, 74 [8] = KEY_7, 75 [9] = KEY_8, 76 [10] = KEY_9, 77 [11] = KEY_0, 78 [12] = KEY_MINUS, 79 [13] = KEY_EQUAL, 80 [14] = KEY_BACKSPACE, 81 [15] = KEY_TAB, 82 [16] = KEY_Q, 83 [17] = KEY_W, 84 [18] = KEY_E, 85 [19] = KEY_R, 86 [20] = KEY_T, 87 [21] = KEY_Y, 88 [22] = KEY_U, 89 [23] = KEY_I, 90 [24] = KEY_O, 91 [25] = KEY_P, 92 [26] = KEY_LEFTBRACE, 93 [27] = KEY_RIGHTBRACE, 94 [28] = KEY_ENTER, 95 [29] = KEY_LEFTCTRL, 96 [30] = KEY_A, 97 [31] = KEY_S, 98 [32] = KEY_D, 99 [33] = KEY_F, 100 [34] = KEY_G, 101 [35] = KEY_H, 102 [36] = KEY_J, 103 [37] = KEY_K, 104 [38] = KEY_L, 105 [39] = KEY_SEMICOLON, 106 [40] = KEY_APOSTROPHE, 107 [41] = KEY_GRAVE, 108 [42] = KEY_LEFTSHIFT, 109 [43] = KEY_BACKSLASH, 110 [44] = KEY_Z, 111 [45] = KEY_X, 112 [46] = KEY_C, 113 [47] = KEY_V, 114 [48] = KEY_B, 115 [49] = KEY_N, 116 [50] = KEY_M, 117 [51] = KEY_COMMA, 118 [52] = KEY_DOT, 119 [53] = KEY_SLASH, 120 [54] = KEY_RIGHTSHIFT, 121 [55] = KEY_KPASTERISK, 122 [56] = KEY_LEFTALT, 123 [57] = KEY_SPACE, 124 [58] = KEY_CAPSLOCK, 125 [59] = KEY_F1, 126 [60] = KEY_F2, 127 [61] = KEY_F3, 128 [62] = KEY_F4, 129 [63] = KEY_F5, 130 [64] = KEY_F6, 131 [65] = KEY_F7, 132 [66] = KEY_F8, 133 [67] = KEY_F9, 134 [68] = KEY_F10, 135 [71] = KEY_HOME, 136 [72] = KEY_UP, 137 [74] = KEY_KPMINUS, 138 [75] = KEY_LEFT, 139 [77] = KEY_RIGHT, 140 [78] = KEY_KPPLUS, 141 [80] = KEY_DOWN, 142 [82] = KEY_INSERT, 143 [83] = KEY_DELETE, 144 [96] = KEY_102ND, 145 [97] = KEY_UNDO, 146 [98] = KEY_HELP, 147 [99] = KEY_KPLEFTPAREN, 148 [100] = KEY_KPRIGHTPAREN, 149 [101] = KEY_KPSLASH, 150 [102] = KEY_KPASTERISK, 151 [103] = KEY_KP7, 152 [104] = KEY_KP8, 153 [105] = KEY_KP9, 154 [106] = KEY_KP4, 155 [107] = KEY_KP5, 156 [108] = KEY_KP6, 157 [109] = KEY_KP1, 158 [110] = KEY_KP2, 159 [111] = KEY_KP3, 160 [112] = KEY_KP0, 161 [113] = KEY_KPDOT, 162 [114] = KEY_KPENTER, 163}; 164 165static struct input_dev *atakbd_dev; 166 167static void atakbd_interrupt(unsigned char scancode, char down) 168{ 169 170 if (scancode < 0x73) { /* scancodes < 0xf3 are keys */ 171 172 // report raw events here? 173 174 scancode = atakbd_keycode[scancode]; 175 176 input_report_key(atakbd_dev, scancode, down); 177 input_sync(atakbd_dev); 178 } else /* scancodes >= 0xf3 are mouse data, most likely */ 179 printk(KERN_INFO "atakbd: unhandled scancode %x\n", scancode); 180 181 return; 182} 183 184static int __init atakbd_init(void) 185{ 186 int i, error; 187 188 if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP)) 189 return -ENODEV; 190 191 // need to init core driver if not already done so 192 error = atari_keyb_init(); 193 if (error) 194 return error; 195 196 atakbd_dev = input_allocate_device(); 197 if (!atakbd_dev) 198 return -ENOMEM; 199 200 atakbd_dev->name = "Atari Keyboard"; 201 atakbd_dev->phys = "atakbd/input0"; 202 atakbd_dev->id.bustype = BUS_HOST; 203 atakbd_dev->id.vendor = 0x0001; 204 atakbd_dev->id.product = 0x0001; 205 atakbd_dev->id.version = 0x0100; 206 207 atakbd_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); 208 atakbd_dev->keycode = atakbd_keycode; 209 atakbd_dev->keycodesize = sizeof(unsigned char); 210 atakbd_dev->keycodemax = ARRAY_SIZE(atakbd_keycode); 211 212 for (i = 1; i < 0x72; i++) { 213 set_bit(atakbd_keycode[i], atakbd_dev->keybit); 214 } 215 216 /* error check */ 217 error = input_register_device(atakbd_dev); 218 if (error) { 219 input_free_device(atakbd_dev); 220 return error; 221 } 222 223 atari_input_keyboard_interrupt_hook = atakbd_interrupt; 224 225 return 0; 226} 227 228static void __exit atakbd_exit(void) 229{ 230 atari_input_keyboard_interrupt_hook = NULL; 231 input_unregister_device(atakbd_dev); 232} 233 234module_init(atakbd_init); 235module_exit(atakbd_exit);