[net-next-2.6.git] / drivers / input / keyboard / hil_kbd.c

/*
 * Generic linux-input device driver for keyboard devices
 *
 * Copyright (c) 2001 Brian S. Julin
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL").
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 *
 * References:
 * HP-HIL Technical Reference Manual.  Hewlett Packard Product No. 45918A
 *
 */

#include <linux/hil.h>
#include <linux/input.h>
#include <linux/serio.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/pci_ids.h>

#define PREFIX "HIL KEYB: "
#define HIL_GENERIC_NAME "HIL keyboard"

MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
MODULE_DESCRIPTION(HIL_GENERIC_NAME " driver");
MODULE_LICENSE("Dual BSD/GPL");

#define HIL_KBD_MAX_LENGTH 16

#define HIL_KBD_SET1_UPBIT 0x01
#define HIL_KBD_SET1_SHIFT 1
static unsigned int hil_kbd_set1[HIL_KEYCODES_SET1_TBLSIZE] = 
	{ HIL_KEYCODES_SET1 };

#define HIL_KBD_SET2_UPBIT 0x01
#define HIL_KBD_SET2_SHIFT 1
/* Set2 is user defined */

#define HIL_KBD_SET3_UPBIT 0x80
#define HIL_KBD_SET3_SHIFT 0
static unsigned int hil_kbd_set3[HIL_KEYCODES_SET3_TBLSIZE] =
	{ HIL_KEYCODES_SET3 };

static char hil_language[][16] = { HIL_LOCALE_MAP };

struct hil_kbd {
	struct input_dev *dev;
	struct serio *serio;

	/* Input buffer and index for packets from HIL bus. */
	hil_packet data[HIL_KBD_MAX_LENGTH];
	int idx4; /* four counts per packet */

	/* Raw device info records from HIL bus, see hil.h for fields. */
	char	idd[HIL_KBD_MAX_LENGTH];	/* DID byte and IDD record */
	char	rsc[HIL_KBD_MAX_LENGTH];	/* RSC record */
	char	exd[HIL_KBD_MAX_LENGTH];	/* EXD record */
	char	rnm[HIL_KBD_MAX_LENGTH + 1];	/* RNM record + NULL term. */

	/* Something to sleep around with. */
	struct semaphore sem;
};

/* Process a complete packet after transfer from the HIL */
static void hil_kbd_process_record(struct hil_kbd *kbd)
{
	struct input_dev *dev = kbd->dev;
	hil_packet *data = kbd->data;
	hil_packet p;
	int idx, i, cnt;

	idx = kbd->idx4/4;
	p = data[idx - 1];

	if ((p & ~HIL_CMDCT_POL) == 
	    (HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_POL)) goto report;
	if ((p & ~HIL_CMDCT_RPL) == 
	    (HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_RPL)) goto report;

	/* Not a poll response.  See if we are loading config records. */
	switch (p & HIL_PKT_DATA_MASK) {
	case HIL_CMD_IDD:
		for (i = 0; i < idx; i++)
			kbd->idd[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
		for (; i < HIL_KBD_MAX_LENGTH; i++)
			kbd->idd[i] = 0;
		break;
	case HIL_CMD_RSC:
		for (i = 0; i < idx; i++)
			kbd->rsc[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
		for (; i < HIL_KBD_MAX_LENGTH; i++)
			kbd->rsc[i] = 0;
		break;
	case HIL_CMD_EXD:
		for (i = 0; i < idx; i++)
			kbd->exd[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
		for (; i < HIL_KBD_MAX_LENGTH; i++)
			kbd->exd[i] = 0;
		break;
	case HIL_CMD_RNM:
		for (i = 0; i < idx; i++)
			kbd->rnm[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
		for (; i < HIL_KBD_MAX_LENGTH + 1; i++)
			kbd->rnm[i] = '\0';
		break;
	default:
		/* These occur when device isn't present */
		if (p == (HIL_ERR_INT | HIL_PKT_CMD)) break; 
		/* Anything else we'd like to know about. */
		printk(KERN_WARNING PREFIX "Device sent unknown record %x\n", p);
		break;
	}
	goto out;

 report:
	cnt = 1;
	switch (kbd->data[0] & HIL_POL_CHARTYPE_MASK) {
	case HIL_POL_CHARTYPE_NONE:
		break;
	case HIL_POL_CHARTYPE_ASCII:
		while (cnt < idx - 1)
			input_report_key(dev, kbd->data[cnt++] & 0x7f, 1);
		break;
	case HIL_POL_CHARTYPE_RSVD1:
	case HIL_POL_CHARTYPE_RSVD2:
	case HIL_POL_CHARTYPE_BINARY:
		while (cnt < idx - 1)
			input_report_key(dev, kbd->data[cnt++], 1);
		break;
	case HIL_POL_CHARTYPE_SET1:
		while (cnt < idx - 1) {
			unsigned int key;
			int up;
			key = kbd->data[cnt++];
			up = key & HIL_KBD_SET1_UPBIT;
			key &= (~HIL_KBD_SET1_UPBIT & 0xff);
			key = hil_kbd_set1[key >> HIL_KBD_SET1_SHIFT];
			if (key != KEY_RESERVED)
				input_report_key(dev, key, !up);
		}
		break;
	case HIL_POL_CHARTYPE_SET2:
		while (cnt < idx - 1) {
			unsigned int key;
			int up;
			key = kbd->data[cnt++];
			up = key & HIL_KBD_SET2_UPBIT;
			key &= (~HIL_KBD_SET1_UPBIT & 0xff);
			key = key >> HIL_KBD_SET2_SHIFT;
			if (key != KEY_RESERVED)
				input_report_key(dev, key, !up);
		}
		break;
	case HIL_POL_CHARTYPE_SET3:
		while (cnt < idx - 1) {
			unsigned int key;
			int up;
			key = kbd->data[cnt++];
			up = key & HIL_KBD_SET3_UPBIT;
			key &= (~HIL_KBD_SET1_UPBIT & 0xff);
			key = hil_kbd_set3[key >> HIL_KBD_SET3_SHIFT];
			if (key != KEY_RESERVED)
				input_report_key(dev, key, !up);
		}
		break;
	}
 out:
	kbd->idx4 = 0;
	up(&kbd->sem);
}

static void hil_kbd_process_err(struct hil_kbd *kbd) {
	printk(KERN_WARNING PREFIX "errored HIL packet\n");
	kbd->idx4 = 0;
	up(&kbd->sem);
}

static irqreturn_t hil_kbd_interrupt(struct serio *serio, 
	      unsigned char data, unsigned int flags)
{
	struct hil_kbd *kbd;
	hil_packet packet;
	int idx;

	kbd = serio_get_drvdata(serio);
	if (kbd == NULL) {
		BUG();
		return IRQ_HANDLED;
	}

	if (kbd->idx4 >= (HIL_KBD_MAX_LENGTH * sizeof(hil_packet))) {
		hil_kbd_process_err(kbd);
		return IRQ_HANDLED;
	}
	idx = kbd->idx4/4;
	if (!(kbd->idx4 % 4)) kbd->data[idx] = 0;
	packet = kbd->data[idx];
	packet |= ((hil_packet)data) << ((3 - (kbd->idx4 % 4)) * 8);
	kbd->data[idx] = packet;

	/* Records of N 4-byte hil_packets must terminate with a command. */
	if ((++(kbd->idx4)) % 4) return IRQ_HANDLED;
	if ((packet & 0xffff0000) != HIL_ERR_INT) {
		hil_kbd_process_err(kbd);
		return IRQ_HANDLED;
	}
	if (packet & HIL_PKT_CMD) hil_kbd_process_record(kbd);
	return IRQ_HANDLED;
}

static void hil_kbd_disconnect(struct serio *serio)
{
	struct hil_kbd *kbd;

	kbd = serio_get_drvdata(serio);
	if (kbd == NULL) {
		BUG();
		return;
	}

	serio_close(serio);
	input_unregister_device(kbd->dev);
	kfree(kbd);
}

static int hil_kbd_connect(struct serio *serio, struct serio_driver *drv)
{
	struct hil_kbd	*kbd;
	uint8_t		did, *idd;
	int		i;

	kbd = kzalloc(sizeof(*kbd), GFP_KERNEL);
	if (!kbd)
		return -ENOMEM;

	kbd->dev = input_allocate_device();
	if (!kbd->dev)
		goto bail0;

	kbd->dev->private = kbd;

	if (serio_open(serio, drv))
		goto bail1;

	serio_set_drvdata(serio, kbd);
	kbd->serio = serio;

	init_MUTEX_LOCKED(&(kbd->sem));

	/* Get device info.  MLC driver supplies devid/status/etc. */
	serio->write(serio, 0);
	serio->write(serio, 0);
	serio->write(serio, HIL_PKT_CMD >> 8);
	serio->write(serio, HIL_CMD_IDD);
	down(&(kbd->sem));

	serio->write(serio, 0);
	serio->write(serio, 0);
	serio->write(serio, HIL_PKT_CMD >> 8);
	serio->write(serio, HIL_CMD_RSC);
	down(&(kbd->sem));

	serio->write(serio, 0);
	serio->write(serio, 0);
	serio->write(serio, HIL_PKT_CMD >> 8);
	serio->write(serio, HIL_CMD_RNM);
	down(&(kbd->sem));

	serio->write(serio, 0);
	serio->write(serio, 0);
	serio->write(serio, HIL_PKT_CMD >> 8);
	serio->write(serio, HIL_CMD_EXD);
	down(&(kbd->sem));

	up(&(kbd->sem));

	did = kbd->idd[0];
	idd = kbd->idd + 1;
	switch (did & HIL_IDD_DID_TYPE_MASK) {
	case HIL_IDD_DID_TYPE_KB_INTEGRAL:
	case HIL_IDD_DID_TYPE_KB_ITF:
	case HIL_IDD_DID_TYPE_KB_RSVD:
	case HIL_IDD_DID_TYPE_CHAR:
		printk(KERN_INFO PREFIX "HIL keyboard found (did = 0x%02x, lang = %s)\n",
			did, hil_language[did & HIL_IDD_DID_TYPE_KB_LANG_MASK]);
		break;
	default:
		goto bail2;
	}

	if(HIL_IDD_NUM_BUTTONS(idd) || HIL_IDD_NUM_AXES_PER_SET(*idd)) {
		printk(KERN_INFO PREFIX "keyboards only, no combo devices supported.\n");
		goto bail2;
	}


	kbd->dev->evbit[0]	= BIT(EV_KEY) | BIT(EV_REP);
	kbd->dev->ledbit[0]	= BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL);
	kbd->dev->keycodemax	= HIL_KEYCODES_SET1_TBLSIZE;
	kbd->dev->keycodesize	= sizeof(hil_kbd_set1[0]);
	kbd->dev->keycode	= hil_kbd_set1;
	kbd->dev->name		= strlen(kbd->rnm) ? kbd->rnm : HIL_GENERIC_NAME;
	kbd->dev->phys		= "hpkbd/input0";	/* XXX */

	kbd->dev->id.bustype	= BUS_HIL;
	kbd->dev->id.vendor	= PCI_VENDOR_ID_HP;
	kbd->dev->id.product	= 0x0001; /* TODO: get from kbd->rsc */
	kbd->dev->id.version	= 0x0100; /* TODO: get from kbd->rsc */
	kbd->dev->dev		= &serio->dev;

	for (i = 0; i < 128; i++) {
		set_bit(hil_kbd_set1[i], kbd->dev->keybit);
		set_bit(hil_kbd_set3[i], kbd->dev->keybit);
	}
	clear_bit(0, kbd->dev->keybit);

	input_register_device(kbd->dev);
	printk(KERN_INFO "input: %s, ID: %d\n",
		kbd->dev->name, did);

	serio->write(serio, 0);
	serio->write(serio, 0);
	serio->write(serio, HIL_PKT_CMD >> 8);
	serio->write(serio, HIL_CMD_EK1); /* Enable Keyswitch Autorepeat 1 */
	down(&(kbd->sem));
	up(&(kbd->sem));

	return 0;
 bail2:
	serio_close(serio);
	serio_set_drvdata(serio, NULL);
 bail1:
	input_free_device(kbd->dev);
 bail0:
	kfree(kbd);
	return -EIO;
}

static struct serio_device_id hil_kbd_ids[] = {
	{
		.type = SERIO_HIL_MLC,
		.proto = SERIO_HIL,
		.id = SERIO_ANY,
		.extra = SERIO_ANY,
	},
	{ 0 }
};

struct serio_driver hil_kbd_serio_drv = {
	.driver		= {
		.name	= "hil_kbd",
	},
	.description	= "HP HIL keyboard driver",
	.id_table	= hil_kbd_ids,
	.connect 	= hil_kbd_connect,
	.disconnect 	= hil_kbd_disconnect,
	.interrupt 	= hil_kbd_interrupt
};

static int __init hil_kbd_init(void)
{
	serio_register_driver(&hil_kbd_serio_drv);
        return 0;
}
                
static void __exit hil_kbd_exit(void)
{
	serio_unregister_driver(&hil_kbd_serio_drv);
}
                        
module_init(hil_kbd_init);
module_exit(hil_kbd_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Generic linux-input device driver for keyboard devices
	3	*
	4	* Copyright (c) 2001 Brian S. Julin
	5	* All rights reserved.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	* 1. Redistributions of source code must retain the above copyright
	11	* notice, this list of conditions, and the following disclaimer,
	12	* without modification.
	13	* 2. The name of the author may not be used to endorse or promote products
	14	* derived from this software without specific prior written permission.
	15	*
	16	* Alternatively, this software may be distributed under the terms of the
	17	* GNU General Public License ("GPL").
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	20	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
	23	* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	27	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	28	*
	29	* References:
	30	* HP-HIL Technical Reference Manual. Hewlett Packard Product No. 45918A
	31	*
	32	*/
	33
	34	#include <linux/hil.h>
	35	#include <linux/input.h>
	36	#include <linux/serio.h>
	37	#include <linux/kernel.h>
	38	#include <linux/module.h>
	39	#include <linux/init.h>
	40	#include <linux/slab.h>
	41	#include <linux/pci_ids.h>
	42
	43	#define PREFIX "HIL KEYB: "
	44	#define HIL_GENERIC_NAME "HIL keyboard"
	45
	46	MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
	47	MODULE_DESCRIPTION(HIL_GENERIC_NAME " driver");
	48	MODULE_LICENSE("Dual BSD/GPL");
	49
	50	#define HIL_KBD_MAX_LENGTH 16
	51
	52	#define HIL_KBD_SET1_UPBIT 0x01
	53	#define HIL_KBD_SET1_SHIFT 1
	54	static unsigned int hil_kbd_set1[HIL_KEYCODES_SET1_TBLSIZE] =
	55	{ HIL_KEYCODES_SET1 };
	56
	57	#define HIL_KBD_SET2_UPBIT 0x01
	58	#define HIL_KBD_SET2_SHIFT 1
	59	/* Set2 is user defined */
	60
	61	#define HIL_KBD_SET3_UPBIT 0x80
	62	#define HIL_KBD_SET3_SHIFT 0
	63	static unsigned int hil_kbd_set3[HIL_KEYCODES_SET3_TBLSIZE] =
	64	{ HIL_KEYCODES_SET3 };
65
66	static char hil_language[][16] = { HIL_LOCALE_MAP };
67
68	struct hil_kbd {
102c8c76	69	struct input_dev *dev;
1da177e4 LT	70	struct serio *serio;
	71
	72	/* Input buffer and index for packets from HIL bus. */
	73	hil_packet data[HIL_KBD_MAX_LENGTH];
	74	int idx4; /* four counts per packet */
	75
	76	/* Raw device info records from HIL bus, see hil.h for fields. */
	77	char idd[HIL_KBD_MAX_LENGTH]; /* DID byte and IDD record */
	78	char rsc[HIL_KBD_MAX_LENGTH]; /* RSC record */
	79	char exd[HIL_KBD_MAX_LENGTH]; /* EXD record */
	80	char rnm[HIL_KBD_MAX_LENGTH + 1]; /* RNM record + NULL term. */
	81
	82	/* Something to sleep around with. */
	83	struct semaphore sem;
	84	};
	85
	86	/* Process a complete packet after transfer from the HIL */
	87	static void hil_kbd_process_record(struct hil_kbd *kbd)
	88	{
102c8c76	89	struct input_dev *dev = kbd->dev;
1da177e4 LT	90	hil_packet *data = kbd->data;
	91	hil_packet p;
	92	int idx, i, cnt;
	93
	94	idx = kbd->idx4/4;
	95	p = data[idx - 1];
	96
	97	if ((p & ~HIL_CMDCT_POL) ==
	98	(HIL_ERR_INT \| HIL_PKT_CMD \| HIL_CMD_POL)) goto report;
	99	if ((p & ~HIL_CMDCT_RPL) ==
	100	(HIL_ERR_INT \| HIL_PKT_CMD \| HIL_CMD_RPL)) goto report;
	101
	102	/* Not a poll response. See if we are loading config records. */
	103	switch (p & HIL_PKT_DATA_MASK) {
	104	case HIL_CMD_IDD:
	105	for (i = 0; i < idx; i++)
	106	kbd->idd[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
	107	for (; i < HIL_KBD_MAX_LENGTH; i++)
	108	kbd->idd[i] = 0;
	109	break;
	110	case HIL_CMD_RSC:
	111	for (i = 0; i < idx; i++)
	112	kbd->rsc[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
	113	for (; i < HIL_KBD_MAX_LENGTH; i++)
	114	kbd->rsc[i] = 0;
	115	break;
	116	case HIL_CMD_EXD:
	117	for (i = 0; i < idx; i++)
	118	kbd->exd[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
	119	for (; i < HIL_KBD_MAX_LENGTH; i++)
	120	kbd->exd[i] = 0;
	121	break;
	122	case HIL_CMD_RNM:
	123	for (i = 0; i < idx; i++)
	124	kbd->rnm[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
	125	for (; i < HIL_KBD_MAX_LENGTH + 1; i++)
	126	kbd->rnm[i] = '\0';
	127	break;
	128	default:
	129	/* These occur when device isn't present */
	130	if (p == (HIL_ERR_INT \| HIL_PKT_CMD)) break;
	131	/* Anything else we'd like to know about. */
	132	printk(KERN_WARNING PREFIX "Device sent unknown record %x\n", p);
	133	break;
	134	}
	135	goto out;
	136
	137	report:
	138	cnt = 1;
	139	switch (kbd->data[0] & HIL_POL_CHARTYPE_MASK) {
	140	case HIL_POL_CHARTYPE_NONE:
	141	break;
	142	case HIL_POL_CHARTYPE_ASCII:
	143	while (cnt < idx - 1)
	144	input_report_key(dev, kbd->data[cnt++] & 0x7f, 1);
	145	break;
	146	case HIL_POL_CHARTYPE_RSVD1:
	147	case HIL_POL_CHARTYPE_RSVD2:
	148	case HIL_POL_CHARTYPE_BINARY:
	149	while (cnt < idx - 1)
	150	input_report_key(dev, kbd->data[cnt++], 1);
	151	break;
	152	case HIL_POL_CHARTYPE_SET1:
	153	while (cnt < idx - 1) {
154	unsigned int key;
155	int up;
156	key = kbd->data[cnt++];
157	up = key & HIL_KBD_SET1_UPBIT;
158	key &= (~HIL_KBD_SET1_UPBIT & 0xff);
159	key = hil_kbd_set1[key >> HIL_KBD_SET1_SHIFT];
160	if (key != KEY_RESERVED)
161	input_report_key(dev, key, !up);
162	}
163	break;
164	case HIL_POL_CHARTYPE_SET2:
165	while (cnt < idx - 1) {
166	unsigned int key;
167	int up;
168	key = kbd->data[cnt++];
169	up = key & HIL_KBD_SET2_UPBIT;
170	key &= (~HIL_KBD_SET1_UPBIT & 0xff);
171	key = key >> HIL_KBD_SET2_SHIFT;
172	if (key != KEY_RESERVED)
173	input_report_key(dev, key, !up);
174	}
175	break;
176	case HIL_POL_CHARTYPE_SET3:
177	while (cnt < idx - 1) {
178	unsigned int key;
179	int up;
180	key = kbd->data[cnt++];
181	up = key & HIL_KBD_SET3_UPBIT;
182	key &= (~HIL_KBD_SET1_UPBIT & 0xff);
183	key = hil_kbd_set3[key >> HIL_KBD_SET3_SHIFT];
184	if (key != KEY_RESERVED)
185	input_report_key(dev, key, !up);
186	}
187	break;
188	}
189	out:
190	kbd->idx4 = 0;
191	up(&kbd->sem);
192	}
193
194	static void hil_kbd_process_err(struct hil_kbd *kbd) {
195	printk(KERN_WARNING PREFIX "errored HIL packet\n");
196	kbd->idx4 = 0;
197	up(&kbd->sem);
198	}
199
200	static irqreturn_t hil_kbd_interrupt(struct serio *serio,
7d12e780	201	unsigned char data, unsigned int flags)
1da177e4 LT	202	{
	203	struct hil_kbd *kbd;
	204	hil_packet packet;
	205	int idx;
	206
6ab0f5cd	207	kbd = serio_get_drvdata(serio);
1da177e4 LT	208	if (kbd == NULL) {
	209	BUG();
	210	return IRQ_HANDLED;
	211	}
	212
	213	if (kbd->idx4 >= (HIL_KBD_MAX_LENGTH * sizeof(hil_packet))) {
	214	hil_kbd_process_err(kbd);
	215	return IRQ_HANDLED;
	216	}
	217	idx = kbd->idx4/4;
	218	if (!(kbd->idx4 % 4)) kbd->data[idx] = 0;
	219	packet = kbd->data[idx];
	220	packet \|= ((hil_packet)data) << ((3 - (kbd->idx4 % 4)) * 8);
	221	kbd->data[idx] = packet;
	222
	223	/* Records of N 4-byte hil_packets must terminate with a command. */
	224	if ((++(kbd->idx4)) % 4) return IRQ_HANDLED;
	225	if ((packet & 0xffff0000) != HIL_ERR_INT) {
	226	hil_kbd_process_err(kbd);
	227	return IRQ_HANDLED;
	228	}
	229	if (packet & HIL_PKT_CMD) hil_kbd_process_record(kbd);
	230	return IRQ_HANDLED;
	231	}
	232
	233	static void hil_kbd_disconnect(struct serio *serio)
	234	{
	235	struct hil_kbd *kbd;
	236
6ab0f5cd	237	kbd = serio_get_drvdata(serio);
1da177e4 LT	238	if (kbd == NULL) {
	239	BUG();
	240	return;
	241	}
	242
1da177e4	243	serio_close(serio);
cd7a9202	244	input_unregister_device(kbd->dev);
1da177e4 LT	245	kfree(kbd);
	246	}
	247
6ab0f5cd	248	static int hil_kbd_connect(struct serio serio, struct serio_driver drv)
1da177e4 LT	249	{
	250	struct hil_kbd *kbd;
	251	uint8_t did, *idd;
	252	int i;
95d465fd	253
b39787a9	254	kbd = kzalloc(sizeof(*kbd), GFP_KERNEL);
6ab0f5cd MW	255	if (!kbd)
6ab0f5cd MW	256	return -ENOMEM;
1da177e4	257
102c8c76	258	kbd->dev = input_allocate_device();
95d465fd DT	259	if (!kbd->dev)
	260	goto bail0;
	261
102c8c76	262	kbd->dev->private = kbd;
1da177e4	263
95d465fd DT	264	if (serio_open(serio, drv))
95d465fd DT	265	goto bail1;
1da177e4	266
6ab0f5cd	267	serio_set_drvdata(serio, kbd);
1da177e4	268	kbd->serio = serio;
1da177e4 LT	269
	270	init_MUTEX_LOCKED(&(kbd->sem));
	271
	272	/* Get device info. MLC driver supplies devid/status/etc. */
	273	serio->write(serio, 0);
	274	serio->write(serio, 0);
	275	serio->write(serio, HIL_PKT_CMD >> 8);
	276	serio->write(serio, HIL_CMD_IDD);
	277	down(&(kbd->sem));
	278
	279	serio->write(serio, 0);
	280	serio->write(serio, 0);
	281	serio->write(serio, HIL_PKT_CMD >> 8);
	282	serio->write(serio, HIL_CMD_RSC);
	283	down(&(kbd->sem));
	284
	285	serio->write(serio, 0);
	286	serio->write(serio, 0);
	287	serio->write(serio, HIL_PKT_CMD >> 8);
	288	serio->write(serio, HIL_CMD_RNM);
	289	down(&(kbd->sem));
	290
	291	serio->write(serio, 0);
	292	serio->write(serio, 0);
	293	serio->write(serio, HIL_PKT_CMD >> 8);
	294	serio->write(serio, HIL_CMD_EXD);
	295	down(&(kbd->sem));
	296
	297	up(&(kbd->sem));
	298
	299	did = kbd->idd[0];
	300	idd = kbd->idd + 1;
	301	switch (did & HIL_IDD_DID_TYPE_MASK) {
	302	case HIL_IDD_DID_TYPE_KB_INTEGRAL:
	303	case HIL_IDD_DID_TYPE_KB_ITF:
	304	case HIL_IDD_DID_TYPE_KB_RSVD:
	305	case HIL_IDD_DID_TYPE_CHAR:
	306	printk(KERN_INFO PREFIX "HIL keyboard found (did = 0x%02x, lang = %s)\n",
	307	did, hil_language[did & HIL_IDD_DID_TYPE_KB_LANG_MASK]);
	308	break;
	309	default:
102c8c76	310	goto bail2;
1da177e4 LT	311	}
	312
	313	if(HIL_IDD_NUM_BUTTONS(idd) \|\| HIL_IDD_NUM_AXES_PER_SET(*idd)) {
	314	printk(KERN_INFO PREFIX "keyboards only, no combo devices supported.\n");
102c8c76	315	goto bail2;
1da177e4 LT	316	}
	317
	318
102c8c76 HD	319	kbd->dev->evbit[0] = BIT(EV_KEY) \| BIT(EV_REP);
	320	kbd->dev->ledbit[0] = BIT(LED_NUML) \| BIT(LED_CAPSL) \| BIT(LED_SCROLLL);
	321	kbd->dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE;
	322	kbd->dev->keycodesize = sizeof(hil_kbd_set1[0]);
	323	kbd->dev->keycode = hil_kbd_set1;
	324	kbd->dev->name = strlen(kbd->rnm) ? kbd->rnm : HIL_GENERIC_NAME;
	325	kbd->dev->phys = "hpkbd/input0"; /* XXX */
1da177e4	326
102c8c76 HD	327	kbd->dev->id.bustype = BUS_HIL;
	328	kbd->dev->id.vendor = PCI_VENDOR_ID_HP;
	329	kbd->dev->id.product = 0x0001; /* TODO: get from kbd->rsc */
	330	kbd->dev->id.version = 0x0100; /* TODO: get from kbd->rsc */
	331	kbd->dev->dev = &serio->dev;
1da177e4 LT	332
1da177e4 LT	333	for (i = 0; i < 128; i++) {
102c8c76 HD	334	set_bit(hil_kbd_set1[i], kbd->dev->keybit);
102c8c76 HD	335	set_bit(hil_kbd_set3[i], kbd->dev->keybit);
1da177e4	336	}
102c8c76	337	clear_bit(0, kbd->dev->keybit);
1da177e4	338
102c8c76	339	input_register_device(kbd->dev);
1da177e4	340	printk(KERN_INFO "input: %s, ID: %d\n",
102c8c76	341	kbd->dev->name, did);
1da177e4 LT	342
	343	serio->write(serio, 0);
	344	serio->write(serio, 0);
	345	serio->write(serio, HIL_PKT_CMD >> 8);
	346	serio->write(serio, HIL_CMD_EK1); /* Enable Keyswitch Autorepeat 1 */
	347	down(&(kbd->sem));
	348	up(&(kbd->sem));
	349
6ab0f5cd	350	return 0;
102c8c76	351	bail2:
1da177e4	352	serio_close(serio);
d668da80	353	serio_set_drvdata(serio, NULL);
102c8c76 HD	354	bail1:
102c8c76 HD	355	input_free_device(kbd->dev);
1da177e4 LT	356	bail0:
1da177e4 LT	357	kfree(kbd);
6ab0f5cd	358	return -EIO;
1da177e4 LT	359	}
1da177e4 LT	360
6ab0f5cd MW	361	static struct serio_device_id hil_kbd_ids[] = {
	362	{
	363	.type = SERIO_HIL_MLC,
	364	.proto = SERIO_HIL,
	365	.id = SERIO_ANY,
	366	.extra = SERIO_ANY,
	367	},
	368	{ 0 }
	369	};
1da177e4 LT	370
	371	struct serio_driver hil_kbd_serio_drv = {
	372	.driver = {
	373	.name = "hil_kbd",
	374	},
	375	.description = "HP HIL keyboard driver",
6ab0f5cd	376	.id_table = hil_kbd_ids,
1da177e4 LT	377	.connect = hil_kbd_connect,
	378	.disconnect = hil_kbd_disconnect,
	379	.interrupt = hil_kbd_interrupt
	380	};
	381
	382	static int __init hil_kbd_init(void)
	383	{
	384	serio_register_driver(&hil_kbd_serio_drv);
	385	return 0;
	386	}
	387
	388	static void __exit hil_kbd_exit(void)
	389	{
	390	serio_unregister_driver(&hil_kbd_serio_drv);
	391	}
	392
	393	module_init(hil_kbd_init);
	394	module_exit(hil_kbd_exit);