Michael Schmitz | c04cb85 | 2007-05-01 22:32:38 +0200 | [diff] [blame] | 1 | /* |
| 2 | * atakbd.c |
| 3 | * |
| 4 | * Copyright (c) 2005 Michael Schmitz |
| 5 | * |
| 6 | * Based on amikbd.c, which is |
| 7 | * |
| 8 | * Copyright (c) 2000-2001 Vojtech Pavlik |
| 9 | * |
| 10 | * Based on the work of: |
| 11 | * Hamish Macdonald |
| 12 | */ |
| 13 | |
| 14 | /* |
| 15 | * Atari keyboard driver for Linux/m68k |
| 16 | * |
| 17 | * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c |
| 18 | * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard |
| 19 | * interrupt is shared with the MIDI ACIA so MIDI data also get handled there). |
| 20 | * This driver only deals with handing key events off to the input layer. |
| 21 | */ |
| 22 | |
| 23 | /* |
| 24 | * This program is free software; you can redistribute it and/or modify |
| 25 | * it under the terms of the GNU General Public License as published by |
| 26 | * the Free Software Foundation; either version 2 of the License, or |
| 27 | * (at your option) any later version. |
| 28 | * |
| 29 | * This program is distributed in the hope that it will be useful, |
| 30 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 32 | * GNU General Public License for more details. |
| 33 | * |
| 34 | * You should have received a copy of the GNU General Public License |
| 35 | * along with this program; if not, write to the Free Software |
| 36 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 37 | * |
| 38 | * Should you need to contact me, the author, you can do so either by |
| 39 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: |
| 40 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic |
| 41 | */ |
| 42 | |
| 43 | #include <linux/module.h> |
| 44 | #include <linux/init.h> |
| 45 | #include <linux/input.h> |
| 46 | #include <linux/delay.h> |
| 47 | #include <linux/interrupt.h> |
| 48 | |
| 49 | #include <asm/atariints.h> |
| 50 | #include <asm/atarihw.h> |
| 51 | #include <asm/atarikb.h> |
| 52 | #include <asm/irq.h> |
| 53 | |
| 54 | MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>"); |
| 55 | MODULE_DESCRIPTION("Atari keyboard driver"); |
| 56 | MODULE_LICENSE("GPL"); |
| 57 | |
| 58 | static unsigned char atakbd_keycode[0x72]; |
| 59 | |
| 60 | static struct input_dev *atakbd_dev; |
| 61 | |
| 62 | static void atakbd_interrupt(unsigned char scancode, char down) |
| 63 | { |
| 64 | |
| 65 | if (scancode < 0x72) { /* scancodes < 0xf2 are keys */ |
| 66 | |
| 67 | // report raw events here? |
| 68 | |
| 69 | scancode = atakbd_keycode[scancode]; |
| 70 | |
| 71 | if (scancode == KEY_CAPSLOCK) { /* CapsLock is a toggle switch key on Amiga */ |
| 72 | input_report_key(atakbd_dev, scancode, 1); |
| 73 | input_report_key(atakbd_dev, scancode, 0); |
| 74 | input_sync(atakbd_dev); |
| 75 | } else { |
| 76 | input_report_key(atakbd_dev, scancode, down); |
| 77 | input_sync(atakbd_dev); |
| 78 | } |
| 79 | } else /* scancodes >= 0xf2 are mouse data, most likely */ |
| 80 | printk(KERN_INFO "atakbd: unhandled scancode %x\n", scancode); |
| 81 | |
| 82 | return; |
| 83 | } |
| 84 | |
| 85 | static int __init atakbd_init(void) |
| 86 | { |
| 87 | int i; |
| 88 | |
| 89 | if (!ATARIHW_PRESENT(ST_MFP)) |
| 90 | return -EIO; |
| 91 | |
| 92 | // TODO: request_mem_region if not done in arch code |
| 93 | |
| 94 | if (!(atakbd_dev = input_allocate_device())) |
| 95 | return -ENOMEM; |
| 96 | |
| 97 | // need to init core driver if not already done so |
| 98 | if (atari_keyb_init()) |
| 99 | return -ENODEV; |
| 100 | |
| 101 | atakbd_dev->name = "Atari Keyboard"; |
| 102 | atakbd_dev->phys = "atakbd/input0"; |
| 103 | atakbd_dev->id.bustype = BUS_ATARI; |
| 104 | atakbd_dev->id.vendor = 0x0001; |
| 105 | atakbd_dev->id.product = 0x0001; |
| 106 | atakbd_dev->id.version = 0x0100; |
| 107 | |
| 108 | atakbd_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); |
| 109 | atakbd_dev->keycode = atakbd_keycode; |
| 110 | atakbd_dev->keycodesize = sizeof(unsigned char); |
| 111 | atakbd_dev->keycodemax = ARRAY_SIZE(atakbd_keycode); |
| 112 | |
| 113 | for (i = 1; i < 0x72; i++) { |
| 114 | atakbd_keycode[i] = i; |
| 115 | set_bit(atakbd_keycode[i], atakbd_dev->keybit); |
| 116 | } |
| 117 | |
| 118 | input_register_device(atakbd_dev); |
| 119 | |
| 120 | atari_input_keyboard_interrupt_hook = atakbd_interrupt; |
| 121 | |
| 122 | printk(KERN_INFO "input: %s at IKBD ACIA\n", atakbd_dev->name); |
| 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | static void __exit atakbd_exit(void) |
| 128 | { |
| 129 | atari_input_keyboard_interrupt_hook = NULL; |
| 130 | input_unregister_device(atakbd_dev); |
| 131 | } |
| 132 | |
| 133 | module_init(atakbd_init); |
| 134 | module_exit(atakbd_exit); |