[deliverable/linux.git] / drivers / input / keyboard / xtkbd.c

/*
 *  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/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
};

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,
};

module_serio_driver(xtkbd_drv);
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* Copyright (c) 1999-2001 Vojtech Pavlik
	3	*/
	4
	5	/*
	6	* XT keyboard driver for Linux
	7	*/
	8
	9	/*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or
	13	* (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	23	*
	24	* Should you need to contact me, the author, you can do so either by
	25	* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
	26	* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
	27	*/
	28
	29	#include <linux/slab.h>
	30	#include <linux/module.h>
	31	#include <linux/input.h>
1da177e4 LT	32	#include <linux/serio.h>
	33
	34	#define DRIVER_DESC "XT keyboard driver"
	35
	36	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	37	MODULE_DESCRIPTION(DRIVER_DESC);
	38	MODULE_LICENSE("GPL");
	39
	40	#define XTKBD_EMUL0 0xe0
	41	#define XTKBD_EMUL1 0xe1
	42	#define XTKBD_KEY 0x7f
	43	#define XTKBD_RELEASE 0x80
	44
	45	static unsigned char xtkbd_keycode[256] = {
	46	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
	47	16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
	48	32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
	49	48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
	50	64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
	51	80, 81, 82, 83, 0, 0, 0, 87, 88, 0, 0, 0, 0, 0, 0, 0,
	52	0, 0, 0, 0, 0, 87, 88, 0, 0, 0, 0,110,111,103,108,105,
	53	106
	54	};
	55
1da177e4 LT	56	struct xtkbd {
1da177e4 LT	57	unsigned char keycode[256];
3c42f0c3	58	struct input_dev *dev;
1da177e4 LT	59	struct serio *serio;
	60	char phys[32];
	61	};
	62
	63	static irqreturn_t xtkbd_interrupt(struct serio *serio,
7d12e780	64	unsigned char data, unsigned int flags)
1da177e4 LT	65	{
	66	struct xtkbd *xtkbd = serio_get_drvdata(serio);
	67
	68	switch (data) {
	69	case XTKBD_EMUL0:
	70	case XTKBD_EMUL1:
	71	break;
	72	default:
	73
	74	if (xtkbd->keycode[data & XTKBD_KEY]) {
3c42f0c3 DT	75	input_report_key(xtkbd->dev, xtkbd->keycode[data & XTKBD_KEY], !(data & XTKBD_RELEASE));
3c42f0c3 DT	76	input_sync(xtkbd->dev);
1da177e4 LT	77	} else {
	78	printk(KERN_WARNING "xtkbd.c: Unknown key (scancode %#x) %s.\n",
	79	data & XTKBD_KEY, data & XTKBD_RELEASE ? "released" : "pressed");
	80	}
	81	}
	82	return IRQ_HANDLED;
	83	}
	84
	85	static int xtkbd_connect(struct serio serio, struct serio_driver drv)
	86	{
	87	struct xtkbd *xtkbd;
3c42f0c3 DT	88	struct input_dev *input_dev;
3c42f0c3 DT	89	int err = -ENOMEM;
1da177e4	90	int i;
1da177e4	91
3c42f0c3 DT	92	xtkbd = kmalloc(sizeof(struct xtkbd), GFP_KERNEL);
	93	input_dev = input_allocate_device();
	94	if (!xtkbd \|\| !input_dev)
2b03b60e	95	goto fail1;
1da177e4 LT	96
1da177e4 LT	97	xtkbd->serio = serio;
3c42f0c3	98	xtkbd->dev = input_dev;
ea08c6fa	99	snprintf(xtkbd->phys, sizeof(xtkbd->phys), "%s/input0", serio->phys);
3c42f0c3	100	memcpy(xtkbd->keycode, xtkbd_keycode, sizeof(xtkbd->keycode));
1da177e4	101
3c42f0c3 DT	102	input_dev->name = "XT Keyboard";
	103	input_dev->phys = xtkbd->phys;
	104	input_dev->id.bustype = BUS_XTKBD;
	105	input_dev->id.vendor = 0x0001;
	106	input_dev->id.product = 0x0001;
	107	input_dev->id.version = 0x0100;
469ba4df	108	input_dev->dev.parent = &serio->dev;
1da177e4	109
7b19ada2	110	input_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REP);
3c42f0c3 DT	111	input_dev->keycode = xtkbd->keycode;
	112	input_dev->keycodesize = sizeof(unsigned char);
	113	input_dev->keycodemax = ARRAY_SIZE(xtkbd_keycode);
1da177e4	114
1da177e4	115	for (i = 0; i < 255; i++)
3c42f0c3 DT	116	set_bit(xtkbd->keycode[i], input_dev->keybit);
3c42f0c3 DT	117	clear_bit(0, input_dev->keybit);
1da177e4	118
3c42f0c3	119	serio_set_drvdata(serio, xtkbd);
1da177e4	120
3c42f0c3 DT	121	err = serio_open(serio, drv);
3c42f0c3 DT	122	if (err)
2b03b60e DT	123	goto fail2;
	124
	125	err = input_register_device(xtkbd->dev);
	126	if (err)
	127	goto fail3;
1da177e4 LT	128
1da177e4 LT	129	return 0;
3c42f0c3	130
2b03b60e DT	131	fail3: serio_close(serio);
	132	fail2: serio_set_drvdata(serio, NULL);
	133	fail1: input_free_device(input_dev);
3c42f0c3 DT	134	kfree(xtkbd);
3c42f0c3 DT	135	return err;
1da177e4 LT	136	}
	137
	138	static void xtkbd_disconnect(struct serio *serio)
	139	{
	140	struct xtkbd *xtkbd = serio_get_drvdata(serio);
	141
1da177e4 LT	142	serio_close(serio);
1da177e4 LT	143	serio_set_drvdata(serio, NULL);
3c42f0c3	144	input_unregister_device(xtkbd->dev);
1da177e4 LT	145	kfree(xtkbd);
	146	}
	147
	148	static struct serio_device_id xtkbd_serio_ids[] = {
	149	{
	150	.type = SERIO_XT,
	151	.proto = SERIO_ANY,
	152	.id = SERIO_ANY,
	153	.extra = SERIO_ANY,
	154	},
	155	{ 0 }
	156	};
	157
	158	MODULE_DEVICE_TABLE(serio, xtkbd_serio_ids);
	159
	160	static struct serio_driver xtkbd_drv = {
	161	.driver = {
	162	.name = "xtkbd",
	163	},
	164	.description = DRIVER_DESC,
	165	.id_table = xtkbd_serio_ids,
	166	.interrupt = xtkbd_interrupt,
	167	.connect = xtkbd_connect,
	168	.disconnect = xtkbd_disconnect,
	169	};
	170
65ac9f7a	171	module_serio_driver(xtkbd_drv);