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

/*
 *  linux/drivers/hil/hilkbd.c
 *
 *  Copyright (C) 1998 Philip Blundell <philb@gnu.org>
 *  Copyright (C) 1999 Matthew Wilcox <willy@bofh.ai>
 *  Copyright (C) 1999-2007 Helge Deller <deller@gmx.de>
 *
 *  Very basic HP Human Interface Loop (HIL) driver.
 *  This driver handles the keyboard on HP300 (m68k) and on some
 *  HP700 (parisc) series machines.
 *
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License version 2.  See the file COPYING in the main directory of this
 * archive for more details.
 */

#include <linux/pci_ids.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/input.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/hil.h>
#include <linux/io.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <asm/irq.h>
#ifdef CONFIG_HP300
#include <asm/hwtest.h>
#endif


MODULE_AUTHOR("Philip Blundell, Matthew Wilcox, Helge Deller");
MODULE_DESCRIPTION("HIL keyboard driver (basic functionality)");
MODULE_LICENSE("GPL v2");


#if defined(CONFIG_PARISC)

 #include <asm/io.h>
 #include <asm/hardware.h>
 #include <asm/parisc-device.h>
 static unsigned long hil_base;	/* HPA for the HIL device */
 static unsigned int hil_irq;
 #define HILBASE		hil_base /* HPPA (parisc) port address */
 #define HIL_DATA		0x800
 #define HIL_CMD		0x801
 #define HIL_IRQ		hil_irq
 #define hil_readb(p)		gsc_readb(p)
 #define hil_writeb(v,p)	gsc_writeb((v),(p))

#elif defined(CONFIG_HP300)

 #define HILBASE		0xf0428000UL /* HP300 (m68k) port address */
 #define HIL_DATA		0x1
 #define HIL_CMD		0x3
 #define HIL_IRQ		2
 #define hil_readb(p)		readb(p)
 #define hil_writeb(v,p)	writeb((v),(p))

#else
#error "HIL is not supported on this platform"
#endif


/* HIL helper functions */

#define hil_busy()              (hil_readb(HILBASE + HIL_CMD) & HIL_BUSY)
#define hil_data_available()    (hil_readb(HILBASE + HIL_CMD) & HIL_DATA_RDY)
#define hil_status()            (hil_readb(HILBASE + HIL_CMD))
#define hil_command(x)          do { hil_writeb((x), HILBASE + HIL_CMD); } while (0)
#define hil_read_data()         (hil_readb(HILBASE + HIL_DATA))
#define hil_write_data(x)       do { hil_writeb((x), HILBASE + HIL_DATA); } while (0)

/* HIL constants */

#define	HIL_BUSY		0x02
#define	HIL_DATA_RDY		0x01

#define	HIL_SETARD		0xA0		/* set auto-repeat delay */
#define	HIL_SETARR		0xA2		/* set auto-repeat rate */
#define	HIL_SETTONE		0xA3		/* set tone generator */
#define	HIL_CNMT		0xB2		/* clear nmi */
#define	HIL_INTON		0x5C		/* Turn on interrupts. */
#define	HIL_INTOFF		0x5D		/* Turn off interrupts. */

#define	HIL_READKBDSADR		0xF9
#define	HIL_WRITEKBDSADR	0xE9

static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] __read_mostly =
	{ HIL_KEYCODES_SET1 };

/* HIL structure */
static struct {
	struct input_dev *dev;

	unsigned int curdev;

	unsigned char s;
	unsigned char c;
	int valid;

	unsigned char data[16];
	unsigned int ptr;
	spinlock_t lock;

	void *dev_id;	/* native bus device */
} hil_dev;


static void poll_finished(void)
{
	int down;
	int key;
	unsigned char scode;

	switch (hil_dev.data[0]) {
	case 0x40:
		down = (hil_dev.data[1] & 1) == 0;
		scode = hil_dev.data[1] >> 1;
		key = hphilkeyb_keycode[scode];
		input_report_key(hil_dev.dev, key, down);
		break;
	}
	hil_dev.curdev = 0;
}


static inline void handle_status(unsigned char s, unsigned char c)
{
	if (c & 0x8) {
		/* End of block */
		if (c & 0x10)
			poll_finished();
	} else {
		if (c & 0x10) {
			if (hil_dev.curdev)
				poll_finished();  /* just in case */
			hil_dev.curdev = c & 7;
			hil_dev.ptr = 0;
		}
	}
}


static inline void handle_data(unsigned char s, unsigned char c)
{
	if (hil_dev.curdev) {
		hil_dev.data[hil_dev.ptr++] = c;
		hil_dev.ptr &= 15;
	}
}


/* handle HIL interrupts */
static irqreturn_t hil_interrupt(int irq, void *handle)
{
	unsigned char s, c;

	s = hil_status();
	c = hil_read_data();

	switch (s >> 4) {
	case 0x5:
		handle_status(s, c);
		break;
	case 0x6:
		handle_data(s, c);
		break;
	case 0x4:
		hil_dev.s = s;
		hil_dev.c = c;
		mb();
		hil_dev.valid = 1;
		break;
	}
	return IRQ_HANDLED;
}


/* send a command to the HIL */
static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len)
{
	unsigned long flags;

	spin_lock_irqsave(&hil_dev.lock, flags);
	while (hil_busy())
		/* wait */;
	hil_command(cmd);
	while (len--) {
		while (hil_busy())
			/* wait */;
		hil_write_data(*(data++));
	}
	spin_unlock_irqrestore(&hil_dev.lock, flags);
}


/* initialize HIL */
static int hil_keyb_init(void)
{
	unsigned char c;
	unsigned int i, kbid;
	wait_queue_head_t hil_wait;
	int err;

	if (hil_dev.dev)
		return -ENODEV; /* already initialized */

	init_waitqueue_head(&hil_wait);
	spin_lock_init(&hil_dev.lock);

	hil_dev.dev = input_allocate_device();
	if (!hil_dev.dev)
		return -ENOMEM;

	err = request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id);
	if (err) {
		printk(KERN_ERR "HIL: Can't get IRQ\n");
		goto err1;
	}

	/* Turn on interrupts */
	hil_do(HIL_INTON, NULL, 0);

	/* Look for keyboards */
	hil_dev.valid = 0;	/* clear any pending data */
	hil_do(HIL_READKBDSADR, NULL, 0);

	wait_event_interruptible_timeout(hil_wait, hil_dev.valid, 3 * HZ);
	if (!hil_dev.valid)
		printk(KERN_WARNING "HIL: timed out, assuming no keyboard present\n");

	c = hil_dev.c;
	hil_dev.valid = 0;
	if (c == 0) {
		kbid = -1;
		printk(KERN_WARNING "HIL: no keyboard present\n");
	} else {
		kbid = ffz(~c);
		printk(KERN_INFO "HIL: keyboard found at id %d\n", kbid);
	}

	/* set it to raw mode */
	c = 0;
	hil_do(HIL_WRITEKBDSADR, &c, 1);

	for (i = 0; i < HIL_KEYCODES_SET1_TBLSIZE; i++)
		if (hphilkeyb_keycode[i] != KEY_RESERVED)
			__set_bit(hphilkeyb_keycode[i], hil_dev.dev->keybit);

	hil_dev.dev->evbit[0]	= BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
	hil_dev.dev->ledbit[0]	= BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
		BIT_MASK(LED_SCROLLL);
	hil_dev.dev->keycodemax	= HIL_KEYCODES_SET1_TBLSIZE;
	hil_dev.dev->keycodesize= sizeof(hphilkeyb_keycode[0]);
	hil_dev.dev->keycode	= hphilkeyb_keycode;
	hil_dev.dev->name	= "HIL keyboard";
	hil_dev.dev->phys	= "hpkbd/input0";

	hil_dev.dev->id.bustype	= BUS_HIL;
	hil_dev.dev->id.vendor	= PCI_VENDOR_ID_HP;
	hil_dev.dev->id.product	= 0x0001;
	hil_dev.dev->id.version	= 0x0010;

	err = input_register_device(hil_dev.dev);
	if (err) {
		printk(KERN_ERR "HIL: Can't register device\n");
		goto err2;
	}

	printk(KERN_INFO "input: %s, ID %d at 0x%08lx (irq %d) found and attached\n",
	       hil_dev.dev->name, kbid, HILBASE, HIL_IRQ);

	return 0;

err2:
	hil_do(HIL_INTOFF, NULL, 0);
	free_irq(HIL_IRQ, hil_dev.dev_id);
err1:
	input_free_device(hil_dev.dev);
	hil_dev.dev = NULL;
	return err;
}

static void hil_keyb_exit(void)
{
	if (HIL_IRQ)
		free_irq(HIL_IRQ, hil_dev.dev_id);

	/* Turn off interrupts */
	hil_do(HIL_INTOFF, NULL, 0);

	input_unregister_device(hil_dev.dev);
	hil_dev.dev = NULL;
}

#if defined(CONFIG_PARISC)
static int hil_probe_chip(struct parisc_device *dev)
{
	/* Only allow one HIL keyboard */
	if (hil_dev.dev)
		return -ENODEV;

	if (!dev->irq) {
		printk(KERN_WARNING "HIL: IRQ not found for HIL bus at 0x%p\n",
			(void *)dev->hpa.start);
		return -ENODEV;
	}

	hil_base = dev->hpa.start;
	hil_irq  = dev->irq;
	hil_dev.dev_id = dev;

	printk(KERN_INFO "Found HIL bus at 0x%08lx, IRQ %d\n", hil_base, hil_irq);

	return hil_keyb_init();
}

static int hil_remove_chip(struct parisc_device *dev)
{
	hil_keyb_exit();

	return 0;
}

static struct parisc_device_id hil_tbl[] = {
	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00073 },
	{ 0, }
};

#if 0
/* Disabled to avoid conflicts with the HP SDC HIL drivers */
MODULE_DEVICE_TABLE(parisc, hil_tbl);
#endif

static struct parisc_driver hil_driver = {
	.name		= "hil",
	.id_table	= hil_tbl,
	.probe		= hil_probe_chip,
	.remove		= hil_remove_chip,
};

static int __init hil_init(void)
{
	return register_parisc_driver(&hil_driver);
}

static void __exit hil_exit(void)
{
	unregister_parisc_driver(&hil_driver);
}

#else /* !CONFIG_PARISC */

static int __init hil_init(void)
{
	int error;

	/* Only allow one HIL keyboard */
	if (hil_dev.dev)
		return -EBUSY;

	if (!MACH_IS_HP300)
		return -ENODEV;

	if (!hwreg_present((void *)(HILBASE + HIL_DATA))) {
		printk(KERN_ERR "HIL: hardware register was not found\n");
		return -ENODEV;
	}

	if (!request_region(HILBASE + HIL_DATA, 2, "hil")) {
		printk(KERN_ERR "HIL: IOPORT region already used\n");
		return -EIO;
	}

	error = hil_keyb_init();
	if (error) {
		release_region(HILBASE + HIL_DATA, 2);
		return error;
	}

	return 0;
}

static void __exit hil_exit(void)
{
	hil_keyb_exit();
	release_region(HILBASE + HIL_DATA, 2);
}

#endif /* CONFIG_PARISC */

module_init(hil_init);
module_exit(hil_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/drivers/hil/hilkbd.c
	3	*
	4	* Copyright (C) 1998 Philip Blundell <philb@gnu.org>
	5	* Copyright (C) 1999 Matthew Wilcox <willy@bofh.ai>
3acaf540	6	* Copyright (C) 1999-2007 Helge Deller <deller@gmx.de>
1da177e4 LT	7	*
1da177e4 LT	8	* Very basic HP Human Interface Loop (HIL) driver.
b350620c	9	* This driver handles the keyboard on HP300 (m68k) and on some
1da177e4 LT	10	* HP700 (parisc) series machines.
1da177e4 LT	11	*
b350620c	12	*
1da177e4 LT	13	* This file is subject to the terms and conditions of the GNU General Public
	14	* License version 2. See the file COPYING in the main directory of this
	15	* archive for more details.
	16	*/
	17
	18	#include <linux/pci_ids.h>
	19	#include <linux/ioport.h>
	20	#include <linux/module.h>
1da177e4 LT	21	#include <linux/errno.h>
	22	#include <linux/input.h>
	23	#include <linux/init.h>
6ab0f5cd	24	#include <linux/interrupt.h>
1da177e4	25	#include <linux/hil.h>
db71b7f1	26	#include <linux/io.h>
d43c36dc	27	#include <linux/sched.h>
1da177e4	28	#include <linux/spinlock.h>
db71b7f1 AV	29	#include <asm/irq.h>
	30	#ifdef CONFIG_HP300
	31	#include <asm/hwtest.h>
	32	#endif
1da177e4 LT	33
	34
	35	MODULE_AUTHOR("Philip Blundell, Matthew Wilcox, Helge Deller");
	36	MODULE_DESCRIPTION("HIL keyboard driver (basic functionality)");
	37	MODULE_LICENSE("GPL v2");
	38
	39
	40	#if defined(CONFIG_PARISC)
	41
	42	#include <asm/io.h>
	43	#include <asm/hardware.h>
	44	#include <asm/parisc-device.h>
	45	static unsigned long hil_base; /* HPA for the HIL device */
	46	static unsigned int hil_irq;
	47	#define HILBASE hil_base /* HPPA (parisc) port address */
	48	#define HIL_DATA 0x800
	49	#define HIL_CMD 0x801
	50	#define HIL_IRQ hil_irq
	51	#define hil_readb(p) gsc_readb(p)
	52	#define hil_writeb(v,p) gsc_writeb((v),(p))
	53
	54	#elif defined(CONFIG_HP300)
	55
f8744bc9	56	#define HILBASE 0xf0428000UL /* HP300 (m68k) port address */
1da177e4 LT	57	#define HIL_DATA 0x1
	58	#define HIL_CMD 0x3
	59	#define HIL_IRQ 2
	60	#define hil_readb(p) readb(p)
	61	#define hil_writeb(v,p) writeb((v),(p))
	62
	63	#else
	64	#error "HIL is not supported on this platform"
	65	#endif
	66
	67
b350620c	68
1da177e4	69	/* HIL helper functions */
b350620c	70
1da177e4 LT	71	#define hil_busy() (hil_readb(HILBASE + HIL_CMD) & HIL_BUSY)
	72	#define hil_data_available() (hil_readb(HILBASE + HIL_CMD) & HIL_DATA_RDY)
	73	#define hil_status() (hil_readb(HILBASE + HIL_CMD))
	74	#define hil_command(x) do { hil_writeb((x), HILBASE + HIL_CMD); } while (0)
	75	#define hil_read_data() (hil_readb(HILBASE + HIL_DATA))
	76	#define hil_write_data(x) do { hil_writeb((x), HILBASE + HIL_DATA); } while (0)
	77
	78	/* HIL constants */
b350620c	79
1da177e4 LT	80	#define HIL_BUSY 0x02
	81	#define HIL_DATA_RDY 0x01
	82
	83	#define HIL_SETARD 0xA0 /* set auto-repeat delay */
	84	#define HIL_SETARR 0xA2 /* set auto-repeat rate */
	85	#define HIL_SETTONE 0xA3 /* set tone generator */
	86	#define HIL_CNMT 0xB2 /* clear nmi */
	87	#define HIL_INTON 0x5C /* Turn on interrupts. */
	88	#define HIL_INTOFF 0x5D /* Turn off interrupts. */
	89
b350620c CG	90	#define HIL_READKBDSADR 0xF9
b350620c CG	91	#define HIL_WRITEKBDSADR 0xE9
1da177e4	92
3acaf540	93	static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] __read_mostly =
1da177e4 LT	94	{ HIL_KEYCODES_SET1 };
	95
	96	/* HIL structure */
	97	static struct {
102c8c76	98	struct input_dev *dev;
1da177e4 LT	99
1da177e4 LT	100	unsigned int curdev;
b350620c	101
1da177e4 LT	102	unsigned char s;
	103	unsigned char c;
	104	int valid;
b350620c	105
1da177e4 LT	106	unsigned char data[16];
	107	unsigned int ptr;
	108	spinlock_t lock;
	109
	110	void dev_id; / native bus device */
	111	} hil_dev;
	112
	113
	114	static void poll_finished(void)
	115	{
	116	int down;
	117	int key;
	118	unsigned char scode;
b350620c	119
1da177e4 LT	120	switch (hil_dev.data[0]) {
	121	case 0x40:
	122	down = (hil_dev.data[1] & 1) == 0;
	123	scode = hil_dev.data[1] >> 1;
	124	key = hphilkeyb_keycode[scode];
102c8c76	125	input_report_key(hil_dev.dev, key, down);
1da177e4 LT	126	break;
	127	}
	128	hil_dev.curdev = 0;
	129	}
	130
b350620c	131
1da177e4 LT	132	static inline void handle_status(unsigned char s, unsigned char c)
	133	{
	134	if (c & 0x8) {
	135	/* End of block */
	136	if (c & 0x10)
	137	poll_finished();
	138	} else {
	139	if (c & 0x10) {
	140	if (hil_dev.curdev)
	141	poll_finished(); /* just in case */
	142	hil_dev.curdev = c & 7;
	143	hil_dev.ptr = 0;
	144	}
	145	}
	146	}
	147
b350620c	148
1da177e4 LT	149	static inline void handle_data(unsigned char s, unsigned char c)
	150	{
	151	if (hil_dev.curdev) {
	152	hil_dev.data[hil_dev.ptr++] = c;
	153	hil_dev.ptr &= 15;
	154	}
	155	}
	156
	157
b350620c	158	/* handle HIL interrupts */
7d12e780	159	static irqreturn_t hil_interrupt(int irq, void *handle)
1da177e4 LT	160	{
1da177e4 LT	161	unsigned char s, c;
b350620c	162
1da177e4 LT	163	s = hil_status();
	164	c = hil_read_data();
	165
	166	switch (s >> 4) {
	167	case 0x5:
	168	handle_status(s, c);
	169	break;
	170	case 0x6:
	171	handle_data(s, c);
	172	break;
	173	case 0x4:
	174	hil_dev.s = s;
	175	hil_dev.c = c;
	176	mb();
	177	hil_dev.valid = 1;
	178	break;
	179	}
	180	return IRQ_HANDLED;
	181	}
	182
1da177e4	183
b350620c	184	/* send a command to the HIL */
1da177e4 LT	185	static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len)
	186	{
	187	unsigned long flags;
	188
	189	spin_lock_irqsave(&hil_dev.lock, flags);
	190	while (hil_busy())
	191	/* wait */;
	192	hil_command(cmd);
	193	while (len--) {
	194	while (hil_busy())
	195	/* wait */;
	196	hil_write_data(*(data++));
	197	}
	198	spin_unlock_irqrestore(&hil_dev.lock, flags);
	199	}
	200
	201
b0ecc730	202	/* initialize HIL */
5298cc4c	203	static int hil_keyb_init(void)
1da177e4 LT	204	{
	205	unsigned char c;
	206	unsigned int i, kbid;
	207	wait_queue_head_t hil_wait;
b350620c	208	int err;
1da177e4	209
b0ecc730	210	if (hil_dev.dev)
1da177e4	211	return -ENODEV; /* already initialized */
102c8c76	212
b0ecc730	213	init_waitqueue_head(&hil_wait);
3acaf540	214	spin_lock_init(&hil_dev.lock);
b0ecc730	215
102c8c76 HD	216	hil_dev.dev = input_allocate_device();
	217	if (!hil_dev.dev)
	218	return -ENOMEM;
b350620c	219
b350620c CG	220	err = request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id);
	221	if (err) {
	222	printk(KERN_ERR "HIL: Can't get IRQ\n");
b0ecc730	223	goto err1;
b350620c	224	}
1da177e4 LT	225
	226	/* Turn on interrupts */
	227	hil_do(HIL_INTON, NULL, 0);
	228
	229	/* Look for keyboards */
	230	hil_dev.valid = 0; /* clear any pending data */
	231	hil_do(HIL_READKBDSADR, NULL, 0);
	232
b0ecc730 HD	233	wait_event_interruptible_timeout(hil_wait, hil_dev.valid, 3 * HZ);
b0ecc730 HD	234	if (!hil_dev.valid)
b350620c	235	printk(KERN_WARNING "HIL: timed out, assuming no keyboard present\n");
1da177e4	236
b350620c	237	c = hil_dev.c;
1da177e4 LT	238	hil_dev.valid = 0;
	239	if (c == 0) {
	240	kbid = -1;
b350620c	241	printk(KERN_WARNING "HIL: no keyboard present\n");
1da177e4 LT	242	} else {
1da177e4 LT	243	kbid = ffz(~c);
b350620c	244	printk(KERN_INFO "HIL: keyboard found at id %d\n", kbid);
1da177e4 LT	245	}
	246
	247	/* set it to raw mode */
	248	c = 0;
	249	hil_do(HIL_WRITEKBDSADR, &c, 1);
b350620c	250
1da177e4 LT	251	for (i = 0; i < HIL_KEYCODES_SET1_TBLSIZE; i++)
1da177e4 LT	252	if (hphilkeyb_keycode[i] != KEY_RESERVED)
b0ecc730	253	__set_bit(hphilkeyb_keycode[i], hil_dev.dev->keybit);
102c8c76	254
7b19ada2 JS	255	hil_dev.dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REP);
	256	hil_dev.dev->ledbit[0] = BIT_MASK(LED_NUML) \| BIT_MASK(LED_CAPSL) \|
	257	BIT_MASK(LED_SCROLLL);
b350620c CG	258	hil_dev.dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE;
	259	hil_dev.dev->keycodesize= sizeof(hphilkeyb_keycode[0]);
	260	hil_dev.dev->keycode = hphilkeyb_keycode;
	261	hil_dev.dev->name = "HIL keyboard";
	262	hil_dev.dev->phys = "hpkbd/input0";
102c8c76 HD	263
	264	hil_dev.dev->id.bustype = BUS_HIL;
	265	hil_dev.dev->id.vendor = PCI_VENDOR_ID_HP;
	266	hil_dev.dev->id.product = 0x0001;
	267	hil_dev.dev->id.version = 0x0010;
	268
b350620c CG	269	err = input_register_device(hil_dev.dev);
	270	if (err) {
	271	printk(KERN_ERR "HIL: Can't register device\n");
b0ecc730	272	goto err2;
b350620c	273	}
b0ecc730	274
1da177e4	275	printk(KERN_INFO "input: %s, ID %d at 0x%08lx (irq %d) found and attached\n",
b350620c	276	hil_dev.dev->name, kbid, HILBASE, HIL_IRQ);
1da177e4 LT	277
1da177e4 LT	278	return 0;
b350620c	279
b0ecc730	280	err2:
b350620c	281	hil_do(HIL_INTOFF, NULL, 0);
b350620c	282	free_irq(HIL_IRQ, hil_dev.dev_id);
b350620c CG	283	err1:
	284	input_free_device(hil_dev.dev);
	285	hil_dev.dev = NULL;
	286	return err;
1da177e4 LT	287	}
1da177e4 LT	288
e2619cf7	289	static void hil_keyb_exit(void)
b0ecc730 HD	290	{
	291	if (HIL_IRQ)
	292	free_irq(HIL_IRQ, hil_dev.dev_id);
	293
	294	/* Turn off interrupts */
	295	hil_do(HIL_INTOFF, NULL, 0);
	296
	297	input_unregister_device(hil_dev.dev);
	298	hil_dev.dev = NULL;
	299	}
b350620c	300
1da177e4	301	#if defined(CONFIG_PARISC)
5298cc4c	302	static int hil_probe_chip(struct parisc_device *dev)
1da177e4	303	{
b0ecc730 HD	304	/* Only allow one HIL keyboard */
	305	if (hil_dev.dev)
	306	return -ENODEV;
	307
1da177e4	308	if (!dev->irq) {
b0ecc730 HD	309	printk(KERN_WARNING "HIL: IRQ not found for HIL bus at 0x%p\n",
b0ecc730 HD	310	(void *)dev->hpa.start);
1da177e4 LT	311	return -ENODEV;
	312	}
	313
53f01bba	314	hil_base = dev->hpa.start;
1da177e4 LT	315	hil_irq = dev->irq;
1da177e4 LT	316	hil_dev.dev_id = dev;
b350620c	317
1da177e4 LT	318	printk(KERN_INFO "Found HIL bus at 0x%08lx, IRQ %d\n", hil_base, hil_irq);
	319
	320	return hil_keyb_init();
	321	}
	322
e2619cf7	323	static int hil_remove_chip(struct parisc_device *dev)
b0ecc730 HD	324	{
	325	hil_keyb_exit();
	326
	327	return 0;
	328	}
	329
1da177e4 LT	330	static struct parisc_device_id hil_tbl[] = {
	331	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00073 },
	332	{ 0, }
	333	};
	334
b0ecc730 HD	335	#if 0
b0ecc730 HD	336	/* Disabled to avoid conflicts with the HP SDC HIL drivers */
1da177e4	337	MODULE_DEVICE_TABLE(parisc, hil_tbl);
b0ecc730	338	#endif
1da177e4 LT	339
1da177e4 LT	340	static struct parisc_driver hil_driver = {
b0ecc730 HD	341	.name = "hil",
	342	.id_table = hil_tbl,
	343	.probe = hil_probe_chip,
1cb0aa88	344	.remove = hil_remove_chip,
1da177e4	345	};
1da177e4	346
1da177e4 LT	347	static int __init hil_init(void)
1da177e4 LT	348	{
1da177e4	349	return register_parisc_driver(&hil_driver);
1da177e4 LT	350	}
1da177e4 LT	351
1da177e4 LT	352	static void __exit hil_exit(void)
1da177e4 LT	353	{
b0ecc730 HD	354	unregister_parisc_driver(&hil_driver);
	355	}
	356
	357	#else /* !CONFIG_PARISC */
	358
	359	static int __init hil_init(void)
	360	{
	361	int error;
	362
	363	/* Only allow one HIL keyboard */
	364	if (hil_dev.dev)
	365	return -EBUSY;
	366
	367	if (!MACH_IS_HP300)
	368	return -ENODEV;
	369
	370	if (!hwreg_present((void *)(HILBASE + HIL_DATA))) {
	371	printk(KERN_ERR "HIL: hardware register was not found\n");
	372	return -ENODEV;
1da177e4 LT	373	}
1da177e4 LT	374
b0ecc730 HD	375	if (!request_region(HILBASE + HIL_DATA, 2, "hil")) {
	376	printk(KERN_ERR "HIL: IOPORT region already used\n");
	377	return -EIO;
	378	}
1da177e4	379
b0ecc730 HD	380	error = hil_keyb_init();
	381	if (error) {
	382	release_region(HILBASE + HIL_DATA, 2);
	383	return error;
	384	}
102c8c76	385
b0ecc730 HD	386	return 0;
b0ecc730 HD	387	}
1da177e4	388
b0ecc730 HD	389	static void __exit hil_exit(void)
	390	{
	391	hil_keyb_exit();
	392	release_region(HILBASE + HIL_DATA, 2);
1da177e4 LT	393	}
1da177e4 LT	394
b0ecc730 HD	395	#endif /* CONFIG_PARISC */
b0ecc730 HD	396
1da177e4 LT	397	module_init(hil_init);
1da177e4 LT	398	module_exit(hil_exit);