diff options
Diffstat (limited to 'drivers/input/keyboard/xtkbd.c')
| -rw-r--r-- | drivers/input/keyboard/xtkbd.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/drivers/input/keyboard/xtkbd.c b/drivers/input/keyboard/xtkbd.c new file mode 100644 index 000000000000..19eaec7789d1 --- /dev/null +++ b/drivers/input/keyboard/xtkbd.c @@ -0,0 +1,188 @@ +/* + * $Id: xtkbd.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $ + * + * Copyright (c) 1999-2001 Vojtech Pavlik + */ + +/* + * XT keyboard driver for Linux + */ + +/* + * 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/slab.h> +#include <linux/module.h> +#include <linux/input.h> +#include <linux/init.h> +#include <linux/serio.h> + +#define DRIVER_DESC "XT keyboard driver" + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +#define XTKBD_EMUL0 0xe0 +#define XTKBD_EMUL1 0xe1 +#define XTKBD_KEY 0x7f +#define XTKBD_RELEASE 0x80 + +static unsigned char xtkbd_keycode[256] = { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, + 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, + 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, + 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, + 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, + 80, 81, 82, 83, 0, 0, 0, 87, 88, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 87, 88, 0, 0, 0, 0,110,111,103,108,105, + 106 +}; + +static char *xtkbd_name = "XT Keyboard"; + +struct xtkbd { + unsigned char keycode[256]; + struct input_dev dev; + struct serio *serio; + char phys[32]; +}; + +static irqreturn_t xtkbd_interrupt(struct serio *serio, + unsigned char data, unsigned int flags, struct pt_regs *regs) +{ + struct xtkbd *xtkbd = serio_get_drvdata(serio); + + switch (data) { + case XTKBD_EMUL0: + case XTKBD_EMUL1: + break; + default: + + if (xtkbd->keycode[data & XTKBD_KEY]) { + input_regs(&xtkbd->dev, regs); + input_report_key(&xtkbd->dev, xtkbd->keycode[data & XTKBD_KEY], !(data & XTKBD_RELEASE)); + input_sync(&xtkbd->dev); + } else { + printk(KERN_WARNING "xtkbd.c: Unknown key (scancode %#x) %s.\n", + data & XTKBD_KEY, data & XTKBD_RELEASE ? "released" : "pressed"); + } + } + return IRQ_HANDLED; +} + +static int xtkbd_connect(struct serio *serio, struct serio_driver *drv) +{ + struct xtkbd *xtkbd; + int i; + int err; + + if (!(xtkbd = kmalloc(sizeof(struct xtkbd), GFP_KERNEL))) + return -ENOMEM; + + memset(xtkbd, 0, sizeof(struct xtkbd)); + + xtkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP); + + xtkbd->serio = serio; + + init_input_dev(&xtkbd->dev); + xtkbd->dev.keycode = xtkbd->keycode; + xtkbd->dev.keycodesize = sizeof(unsigned char); + xtkbd->dev.keycodemax = ARRAY_SIZE(xtkbd_keycode); + xtkbd->dev.private = xtkbd; + + serio_set_drvdata(serio, xtkbd); + + err = serio_open(serio, drv); + if (err) { + serio_set_drvdata(serio, NULL); + kfree(xtkbd); + return err; + } + + memcpy(xtkbd->keycode, xtkbd_keycode, sizeof(xtkbd->keycode)); + for (i = 0; i < 255; i++) + set_bit(xtkbd->keycode[i], xtkbd->dev.keybit); + clear_bit(0, xtkbd->dev.keybit); + + sprintf(xtkbd->phys, "%s/input0", serio->phys); + + xtkbd->dev.name = xtkbd_name; + xtkbd->dev.phys = xtkbd->phys; + xtkbd->dev.id.bustype = BUS_XTKBD; + xtkbd->dev.id.vendor = 0x0001; + xtkbd->dev.id.product = 0x0001; + xtkbd->dev.id.version = 0x0100; + xtkbd->dev.dev = &serio->dev; + + input_register_device(&xtkbd->dev); + + printk(KERN_INFO "input: %s on %s\n", xtkbd_name, serio->phys); + + return 0; +} + +static void xtkbd_disconnect(struct serio *serio) +{ + struct xtkbd *xtkbd = serio_get_drvdata(serio); + + input_unregister_device(&xtkbd->dev); + serio_close(serio); + serio_set_drvdata(serio, NULL); + kfree(xtkbd); +} + +static struct serio_device_id xtkbd_serio_ids[] = { + { + .type = SERIO_XT, + .proto = SERIO_ANY, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, xtkbd_serio_ids); + +static struct serio_driver xtkbd_drv = { + .driver = { + .name = "xtkbd", + }, + .description = DRIVER_DESC, + .id_table = xtkbd_serio_ids, + .interrupt = xtkbd_interrupt, + .connect = xtkbd_connect, + .disconnect = xtkbd_disconnect, +}; + +static int __init xtkbd_init(void) +{ + serio_register_driver(&xtkbd_drv); + return 0; +} + +static void __exit xtkbd_exit(void) +{ + serio_unregister_driver(&xtkbd_drv); +} + +module_init(xtkbd_init); +module_exit(xtkbd_exit); |