[linux-block.git] / drivers / input / keyboard / xtkbd.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (c) 1999-2001 Vojtech Pavlik
 */

/*
 * XT keyboard driver for Linux
 */

/*
 */

#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 const 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
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4	2	/*
1da177e4 LT	3	* Copyright (c) 1999-2001 Vojtech Pavlik
	4	*/
	5
	6	/*
	7	* XT keyboard driver for Linux
	8	*/
	9
	10	/*
1da177e4 LT	11	*/
	12
	13	#include <linux/slab.h>
	14	#include <linux/module.h>
	15	#include <linux/input.h>
1da177e4 LT	16	#include <linux/serio.h>
	17
	18	#define DRIVER_DESC "XT keyboard driver"
	19
	20	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	21	MODULE_DESCRIPTION(DRIVER_DESC);
	22	MODULE_LICENSE("GPL");
	23
	24	#define XTKBD_EMUL0 0xe0
	25	#define XTKBD_EMUL1 0xe1
	26	#define XTKBD_KEY 0x7f
	27	#define XTKBD_RELEASE 0x80
	28
	29	static unsigned char xtkbd_keycode[256] = {
	30	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
	31	16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
	32	32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
	33	48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
	34	64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
	35	80, 81, 82, 83, 0, 0, 0, 87, 88, 0, 0, 0, 0, 0, 0, 0,
	36	0, 0, 0, 0, 0, 87, 88, 0, 0, 0, 0,110,111,103,108,105,
	37	106
	38	};
	39
1da177e4 LT	40	struct xtkbd {
1da177e4 LT	41	unsigned char keycode[256];
3c42f0c3	42	struct input_dev *dev;
1da177e4 LT	43	struct serio *serio;
	44	char phys[32];
	45	};
	46
	47	static irqreturn_t xtkbd_interrupt(struct serio *serio,
7d12e780	48	unsigned char data, unsigned int flags)
1da177e4 LT	49	{
	50	struct xtkbd *xtkbd = serio_get_drvdata(serio);
	51
	52	switch (data) {
	53	case XTKBD_EMUL0:
	54	case XTKBD_EMUL1:
	55	break;
	56	default:
	57
	58	if (xtkbd->keycode[data & XTKBD_KEY]) {
3c42f0c3 DT	59	input_report_key(xtkbd->dev, xtkbd->keycode[data & XTKBD_KEY], !(data & XTKBD_RELEASE));
3c42f0c3 DT	60	input_sync(xtkbd->dev);
1da177e4 LT	61	} else {
	62	printk(KERN_WARNING "xtkbd.c: Unknown key (scancode %#x) %s.\n",
	63	data & XTKBD_KEY, data & XTKBD_RELEASE ? "released" : "pressed");
	64	}
	65	}
	66	return IRQ_HANDLED;
	67	}
	68
	69	static int xtkbd_connect(struct serio serio, struct serio_driver drv)
	70	{
	71	struct xtkbd *xtkbd;
3c42f0c3 DT	72	struct input_dev *input_dev;
3c42f0c3 DT	73	int err = -ENOMEM;
1da177e4	74	int i;
1da177e4	75
3c42f0c3 DT	76	xtkbd = kmalloc(sizeof(struct xtkbd), GFP_KERNEL);
	77	input_dev = input_allocate_device();
	78	if (!xtkbd \|\| !input_dev)
2b03b60e	79	goto fail1;
1da177e4 LT	80
1da177e4 LT	81	xtkbd->serio = serio;
3c42f0c3	82	xtkbd->dev = input_dev;
ea08c6fa	83	snprintf(xtkbd->phys, sizeof(xtkbd->phys), "%s/input0", serio->phys);
3c42f0c3	84	memcpy(xtkbd->keycode, xtkbd_keycode, sizeof(xtkbd->keycode));
1da177e4	85
3c42f0c3 DT	86	input_dev->name = "XT Keyboard";
	87	input_dev->phys = xtkbd->phys;
	88	input_dev->id.bustype = BUS_XTKBD;
	89	input_dev->id.vendor = 0x0001;
	90	input_dev->id.product = 0x0001;
	91	input_dev->id.version = 0x0100;
469ba4df	92	input_dev->dev.parent = &serio->dev;
1da177e4	93
7b19ada2	94	input_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REP);
3c42f0c3 DT	95	input_dev->keycode = xtkbd->keycode;
	96	input_dev->keycodesize = sizeof(unsigned char);
	97	input_dev->keycodemax = ARRAY_SIZE(xtkbd_keycode);
1da177e4	98
1da177e4	99	for (i = 0; i < 255; i++)
3c42f0c3 DT	100	set_bit(xtkbd->keycode[i], input_dev->keybit);
3c42f0c3 DT	101	clear_bit(0, input_dev->keybit);
1da177e4	102
3c42f0c3	103	serio_set_drvdata(serio, xtkbd);
1da177e4	104
3c42f0c3 DT	105	err = serio_open(serio, drv);
3c42f0c3 DT	106	if (err)
2b03b60e DT	107	goto fail2;
	108
	109	err = input_register_device(xtkbd->dev);
	110	if (err)
	111	goto fail3;
1da177e4 LT	112
1da177e4 LT	113	return 0;
3c42f0c3	114
2b03b60e DT	115	fail3: serio_close(serio);
	116	fail2: serio_set_drvdata(serio, NULL);
	117	fail1: input_free_device(input_dev);
3c42f0c3 DT	118	kfree(xtkbd);
3c42f0c3 DT	119	return err;
1da177e4 LT	120	}
	121
	122	static void xtkbd_disconnect(struct serio *serio)
	123	{
	124	struct xtkbd *xtkbd = serio_get_drvdata(serio);
	125
1da177e4 LT	126	serio_close(serio);
1da177e4 LT	127	serio_set_drvdata(serio, NULL);
3c42f0c3	128	input_unregister_device(xtkbd->dev);
1da177e4 LT	129	kfree(xtkbd);
	130	}
	131
e527a87c	132	static const struct serio_device_id xtkbd_serio_ids[] = {
1da177e4 LT	133	{
	134	.type = SERIO_XT,
	135	.proto = SERIO_ANY,
	136	.id = SERIO_ANY,
	137	.extra = SERIO_ANY,
	138	},
	139	{ 0 }
	140	};
	141
	142	MODULE_DEVICE_TABLE(serio, xtkbd_serio_ids);
	143
	144	static struct serio_driver xtkbd_drv = {
	145	.driver = {
	146	.name = "xtkbd",
	147	},
	148	.description = DRIVER_DESC,
	149	.id_table = xtkbd_serio_ids,
	150	.interrupt = xtkbd_interrupt,
	151	.connect = xtkbd_connect,
	152	.disconnect = xtkbd_disconnect,
	153	};
	154
65ac9f7a	155	module_serio_driver(xtkbd_drv);