/* * 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 , or by paper mail: * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic */ #include #include #include #include #include #define DRIVER_DESC "XT keyboard driver" MODULE_AUTHOR("Vojtech Pavlik "); 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 }; 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 xtkbd *xtkbd = serio_get_drvdata(serio); switch (data) { case XTKBD_EMUL0: case XTKBD_EMUL1: break; default: if (xtkbd->keycode[data & XTKBD_KEY]) { 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; struct input_dev *input_dev; int err = -ENOMEM; int i; xtkbd = kmalloc(sizeof(struct xtkbd), GFP_KERNEL); input_dev = input_allocate_device(); if (!xtkbd || !input_dev) goto fail1; xtkbd->serio = serio; xtkbd->dev = input_dev; snprintf(xtkbd->phys, sizeof(xtkbd->phys), "%s/input0", serio->phys); memcpy(xtkbd->keycode, xtkbd_keycode, sizeof(xtkbd->keycode)); input_dev->name = "XT Keyboard"; input_dev->phys = xtkbd->phys; input_dev->id.bustype = BUS_XTKBD; input_dev->id.vendor = 0x0001; input_dev->id.product = 0x0001; input_dev->id.version = 0x0100; input_dev->dev.parent = &serio->dev; input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); input_dev->keycode = xtkbd->keycode; input_dev->keycodesize = sizeof(unsigned char); input_dev->keycodemax = ARRAY_SIZE(xtkbd_keycode); for (i = 0; i < 255; i++) set_bit(xtkbd->keycode[i], input_dev->keybit); clear_bit(0, input_dev->keybit); serio_set_drvdata(serio, xtkbd); err = serio_open(serio, drv); if (err) goto fail2; err = input_register_device(xtkbd->dev); if (err) goto fail3; return 0; fail3: serio_close(serio); fail2: serio_set_drvdata(serio, NULL); fail1: input_free_device(input_dev); kfree(xtkbd); return err; } static void xtkbd_disconnect(struct serio *serio) { struct xtkbd *xtkbd = serio_get_drvdata(serio); serio_close(serio); serio_set_drvdata(serio, NULL); input_unregister_device(xtkbd->dev); 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) { return serio_register_driver(&xtkbd_drv); } static void __exit xtkbd_exit(void) { serio_unregister_driver(&xtkbd_drv); } module_init(xtkbd_init); module_exit(xtkbd_exit); /a> 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 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 
#ifndef _LINUX_KDEV_T_H
#define _LINUX_KDEV_T_H
#ifdef __KERNEL__
#define MINORBITS	20
#define MINORMASK	((1U << MINORBITS) - 1)

#define MAJOR(dev)	((unsigned int) ((dev) >> MINORBITS))
#define MINOR(dev)	((unsigned int) ((dev) & MINORMASK))
#define MKDEV(ma,mi)	(((ma) << MINORBITS) | (mi))

#define print_dev_t(buffer, dev)					\
	sprintf((buffer), "%u:%u\n", MAJOR(dev), MINOR(dev))

#define format_dev_t(buffer, dev)					\
	({								\
		sprintf(buffer, "%u:%u", MAJOR(dev), MINOR(dev));	\
		buffer;							\
	})

/* acceptable for old filesystems */
static inline int old_valid_dev(dev_t dev)
{
	return MAJOR(dev) < 256 && MINOR(dev) < 256;
}

static inline u16 old_encode_dev(dev_t dev)
{
	return (MAJOR(dev) << 8) | MINOR(dev);
}

static inline dev_t old_decode_dev(u16 val)
{
	return MKDEV((val >> 8) & 255, val & 255);
}

static inline int new_valid_dev(dev_t dev)
{
	return 1;
}