diff options
Diffstat (limited to 'drivers/input/keyboard/atakbd.c')
| -rw-r--r-- | drivers/input/keyboard/atakbd.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/input/keyboard/atakbd.c b/drivers/input/keyboard/atakbd.c new file mode 100644 index 00000000000..ded1d6ac6ff --- /dev/null +++ b/drivers/input/keyboard/atakbd.c @@ -0,0 +1,134 @@ +/* + * atakbd.c + * + * Copyright (c) 2005 Michael Schmitz + * + * Based on amikbd.c, which is + * + * Copyright (c) 2000-2001 Vojtech Pavlik + * + * Based on the work of: + * Hamish Macdonald + */ + +/* + * Atari keyboard driver for Linux/m68k + * + * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c + * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard + * interrupt is shared with the MIDI ACIA so MIDI data also get handled there). + * This driver only deals with handing key events off to the input layer. + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Should you need to contact me, the author, you can do so either by + * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: + * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/input.h> +#include <linux/delay.h> +#include <linux/interrupt.h> + +#include <asm/atariints.h> +#include <asm/atarihw.h> +#include <asm/atarikb.h> +#include <asm/irq.h> + +MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>"); +MODULE_DESCRIPTION("Atari keyboard driver"); +MODULE_LICENSE("GPL"); + +static unsigned char atakbd_keycode[0x72]; + +static struct input_dev *atakbd_dev; + +static void atakbd_interrupt(unsigned char scancode, char down) +{ + + if (scancode < 0x72) { /* scancodes < 0xf2 are keys */ + + // report raw events here? + + scancode = atakbd_keycode[scancode]; + + if (scancode == KEY_CAPSLOCK) { /* CapsLock is a toggle switch key on Amiga */ + input_report_key(atakbd_dev, scancode, 1); + input_report_key(atakbd_dev, scancode, 0); + input_sync(atakbd_dev); + } else { + input_report_key(atakbd_dev, scancode, down); + input_sync(atakbd_dev); + } + } else /* scancodes >= 0xf2 are mouse data, most likely */ + printk(KERN_INFO "atakbd: unhandled scancode %x\n", scancode); + + return; +} + +static int __init atakbd_init(void) +{ + int i; + + if (!ATARIHW_PRESENT(ST_MFP)) + return -EIO; + + // TODO: request_mem_region if not done in arch code + + if (!(atakbd_dev = input_allocate_device())) + return -ENOMEM; + + // need to init core driver if not already done so + if (atari_keyb_init()) + return -ENODEV; + + atakbd_dev->name = "Atari Keyboard"; + atakbd_dev->phys = "atakbd/input0"; + atakbd_dev->id.bustype = BUS_ATARI; + atakbd_dev->id.vendor = 0x0001; + atakbd_dev->id.product = 0x0001; + atakbd_dev->id.version = 0x0100; + + atakbd_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); + atakbd_dev->keycode = atakbd_keycode; + atakbd_dev->keycodesize = sizeof(unsigned char); + atakbd_dev->keycodemax = ARRAY_SIZE(atakbd_keycode); + + for (i = 1; i < 0x72; i++) { + atakbd_keycode[i] = i; + set_bit(atakbd_keycode[i], atakbd_dev->keybit); + } + + input_register_device(atakbd_dev); + + atari_input_keyboard_interrupt_hook = atakbd_interrupt; + + printk(KERN_INFO "input: %s at IKBD ACIA\n", atakbd_dev->name); + + return 0; +} + +static void __exit atakbd_exit(void) +{ + atari_input_keyboard_interrupt_hook = NULL; + input_unregister_device(atakbd_dev); +} + +module_init(atakbd_init); +module_exit(atakbd_exit); |