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