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

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (c) 2000 Justin Cormack
 */

/*
 * Newton keyboard driver for Linux
 */

/*
 */

#include <linux/slab.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/serio.h>

#define DRIVER_DESC	"Newton keyboard driver"

MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");

#define NKBD_KEY	0x7f
#define NKBD_PRESS	0x80

static unsigned char nkbd_keycode[128] = {
	KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X,
	KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R,
	KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5,
	KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O,
	KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE,
	KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT,
	KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA,
	KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0
};

struct nkbd {
	unsigned char keycode[128];
	struct input_dev *dev;
	struct serio *serio;
	char phys[32];
};

static irqreturn_t nkbd_interrupt(struct serio *serio,
		unsigned char data, unsigned int flags)
{
	struct nkbd *nkbd = serio_get_drvdata(serio);

	/* invalid scan codes are probably the init sequence, so we ignore them */
	if (nkbd->keycode[data & NKBD_KEY]) {
		input_report_key(nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS);
		input_sync(nkbd->dev);
	}

	else if (data == 0xe7) /* end of init sequence */
		printk(KERN_INFO "input: %s on %s\n", nkbd->dev->name, serio->phys);
	return IRQ_HANDLED;

}

static int nkbd_connect(struct serio *serio, struct serio_driver *drv)
{
	struct nkbd *nkbd;
	struct input_dev *input_dev;
	int err = -ENOMEM;
	int i;

	nkbd = kzalloc(sizeof(struct nkbd), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!nkbd || !input_dev)
		goto fail1;

	nkbd->serio = serio;
	nkbd->dev = input_dev;
	snprintf(nkbd->phys, sizeof(nkbd->phys), "%s/input0", serio->phys);
	memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode));

	input_dev->name = "Newton Keyboard";
	input_dev->phys = nkbd->phys;
	input_dev->id.bustype = BUS_RS232;
	input_dev->id.vendor = SERIO_NEWTON;
	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 = nkbd->keycode;
	input_dev->keycodesize = sizeof(unsigned char);
	input_dev->keycodemax = ARRAY_SIZE(nkbd_keycode);
	for (i = 0; i < 128; i++)
		set_bit(nkbd->keycode[i], input_dev->keybit);
	clear_bit(0, input_dev->keybit);

	serio_set_drvdata(serio, nkbd);

	err = serio_open(serio, drv);
	if (err)
		goto fail2;

	err = input_register_device(nkbd->dev);
	if (err)
		goto fail3;

	return 0;

 fail3:	serio_close(serio);
 fail2:	serio_set_drvdata(serio, NULL);
 fail1:	input_free_device(input_dev);
	kfree(nkbd);
	return err;
}

static void nkbd_disconnect(struct serio *serio)
{
	struct nkbd *nkbd = serio_get_drvdata(serio);

	serio_close(serio);
	serio_set_drvdata(serio, NULL);
	input_unregister_device(nkbd->dev);
	kfree(nkbd);
}

static const struct serio_device_id nkbd_serio_ids[] = {
	{
		.type	= SERIO_RS232,
		.proto	= SERIO_NEWTON,
		.id	= SERIO_ANY,
		.extra	= SERIO_ANY,
	},
	{ 0 }
};

MODULE_DEVICE_TABLE(serio, nkbd_serio_ids);

static struct serio_driver nkbd_drv = {
	.driver		= {
		.name	= "newtonkbd",
	},
	.description	= DRIVER_DESC,
	.id_table	= nkbd_serio_ids,
	.interrupt	= nkbd_interrupt,
	.connect	= nkbd_connect,
	.disconnect	= nkbd_disconnect,
};

module_serio_driver(nkbd_drv);
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
	3	* Copyright (c) 2000 Justin Cormack
	4	*/
	5
	6	/*
	7	* Newton 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 "Newton keyboard driver"
	19
	20	MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>");
	21	MODULE_DESCRIPTION(DRIVER_DESC);
	22	MODULE_LICENSE("GPL");
	23
	24	#define NKBD_KEY 0x7f
	25	#define NKBD_PRESS 0x80
	26
	27	static unsigned char nkbd_keycode[128] = {
	28	KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X,
	29	KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R,
	30	KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5,
	31	KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O,
	32	KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE,
	33	KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT,
	34	KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA,
	35	KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0,
	36	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	37	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	38	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	39	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	40	KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0
	41	};
	42
1da177e4 LT	43	struct nkbd {
1da177e4 LT	44	unsigned char keycode[128];
3c42f0c3	45	struct input_dev *dev;
1da177e4 LT	46	struct serio *serio;
	47	char phys[32];
	48	};
	49
	50	static irqreturn_t nkbd_interrupt(struct serio *serio,
7d12e780	51	unsigned char data, unsigned int flags)
1da177e4 LT	52	{
	53	struct nkbd *nkbd = serio_get_drvdata(serio);
	54
	55	/* invalid scan codes are probably the init sequence, so we ignore them */
	56	if (nkbd->keycode[data & NKBD_KEY]) {
3c42f0c3 DT	57	input_report_key(nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS);
3c42f0c3 DT	58	input_sync(nkbd->dev);
1da177e4 LT	59	}
	60
	61	else if (data == 0xe7) /* end of init sequence */
3c42f0c3	62	printk(KERN_INFO "input: %s on %s\n", nkbd->dev->name, serio->phys);
1da177e4 LT	63	return IRQ_HANDLED;
	64
	65	}
	66
	67	static int nkbd_connect(struct serio serio, struct serio_driver drv)
	68	{
	69	struct nkbd *nkbd;
3c42f0c3 DT	70	struct input_dev *input_dev;
3c42f0c3 DT	71	int err = -ENOMEM;
1da177e4	72	int i;
1da177e4	73
3c42f0c3 DT	74	nkbd = kzalloc(sizeof(struct nkbd), GFP_KERNEL);
	75	input_dev = input_allocate_device();
	76	if (!nkbd \|\| !input_dev)
2b03b60e	77	goto fail1;
1da177e4 LT	78
1da177e4 LT	79	nkbd->serio = serio;
3c42f0c3	80	nkbd->dev = input_dev;
ea08c6fa	81	snprintf(nkbd->phys, sizeof(nkbd->phys), "%s/input0", serio->phys);
3c42f0c3	82	memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode));
1da177e4	83
3c42f0c3 DT	84	input_dev->name = "Newton Keyboard";
	85	input_dev->phys = nkbd->phys;
	86	input_dev->id.bustype = BUS_RS232;
	87	input_dev->id.vendor = SERIO_NEWTON;
	88	input_dev->id.product = 0x0001;
	89	input_dev->id.version = 0x0100;
469ba4df	90	input_dev->dev.parent = &serio->dev;
3c42f0c3	91
7b19ada2	92	input_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REP);
3c42f0c3 DT	93	input_dev->keycode = nkbd->keycode;
	94	input_dev->keycodesize = sizeof(unsigned char);
	95	input_dev->keycodemax = ARRAY_SIZE(nkbd_keycode);
	96	for (i = 0; i < 128; i++)
	97	set_bit(nkbd->keycode[i], input_dev->keybit);
	98	clear_bit(0, input_dev->keybit);
1da177e4 LT	99
	100	serio_set_drvdata(serio, nkbd);
	101
	102	err = serio_open(serio, drv);
3c42f0c3	103	if (err)
2b03b60e DT	104	goto fail2;
	105
	106	err = input_register_device(nkbd->dev);
	107	if (err)
	108	goto fail3;
1da177e4 LT	109
1da177e4 LT	110	return 0;
3c42f0c3	111
2b03b60e DT	112	fail3: serio_close(serio);
	113	fail2: serio_set_drvdata(serio, NULL);
	114	fail1: input_free_device(input_dev);
3c42f0c3 DT	115	kfree(nkbd);
3c42f0c3 DT	116	return err;
1da177e4 LT	117	}
	118
	119	static void nkbd_disconnect(struct serio *serio)
	120	{
	121	struct nkbd *nkbd = serio_get_drvdata(serio);
	122
1da177e4 LT	123	serio_close(serio);
1da177e4 LT	124	serio_set_drvdata(serio, NULL);
3c42f0c3	125	input_unregister_device(nkbd->dev);
1da177e4 LT	126	kfree(nkbd);
	127	}
	128
9780930a	129	static const struct serio_device_id nkbd_serio_ids[] = {
1da177e4 LT	130	{
	131	.type = SERIO_RS232,
	132	.proto = SERIO_NEWTON,
	133	.id = SERIO_ANY,
	134	.extra = SERIO_ANY,
	135	},
	136	{ 0 }
	137	};
	138
	139	MODULE_DEVICE_TABLE(serio, nkbd_serio_ids);
	140
	141	static struct serio_driver nkbd_drv = {
	142	.driver = {
	143	.name = "newtonkbd",
	144	},
	145	.description = DRIVER_DESC,
	146	.id_table = nkbd_serio_ids,
	147	.interrupt = nkbd_interrupt,
	148	.connect = nkbd_connect,
	149	.disconnect = nkbd_disconnect,
	150	};
	151
65ac9f7a	152	module_serio_driver(nkbd_drv);