[linux-2.6-block.git] / drivers / input / keyboard / spitzkbd.c

/*
 *  Keyboard driver for Sharp Spitz, Borzoi and Akita (SL-Cxx00 series)
 *
 *  Copyright (c) 2005 Richard Purdie
 *
 *  Based on corgikbd.c
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 *
 */

#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <linux/slab.h>

#include <asm/arch/spitz.h>
#include <asm/arch/hardware.h>
#include <asm/arch/pxa-regs.h>

#define KB_ROWS			7
#define KB_COLS			11
#define KB_ROWMASK(r)		(1 << (r))
#define SCANCODE(r,c)		(((r)<<4) + (c) + 1)
#define	NR_SCANCODES		((KB_ROWS<<4) + 1)

#define SCAN_INTERVAL		(50) /* ms */
#define HINGE_SCAN_INTERVAL	(150) /* ms */

#define SPITZ_KEY_CALENDER	KEY_F1
#define SPITZ_KEY_ADDRESS	KEY_F2
#define SPITZ_KEY_FN		KEY_F3
#define SPITZ_KEY_CANCEL	KEY_F4
#define SPITZ_KEY_EXOK		KEY_F5
#define SPITZ_KEY_EXCANCEL	KEY_F6
#define SPITZ_KEY_EXJOGDOWN	KEY_F7
#define SPITZ_KEY_EXJOGUP	KEY_F8
#define SPITZ_KEY_JAP1		KEY_LEFTALT
#define SPITZ_KEY_JAP2		KEY_RIGHTCTRL
#define SPITZ_KEY_SYNC		KEY_F9
#define SPITZ_KEY_MAIL		KEY_F10
#define SPITZ_KEY_OK		KEY_F11
#define SPITZ_KEY_MENU		KEY_F12

static unsigned char spitzkbd_keycode[NR_SCANCODES] = {
	0,                                                                                                                /* 0 */
	KEY_LEFTCTRL, KEY_1, KEY_3, KEY_5, KEY_6, KEY_7, KEY_9, KEY_0, KEY_BACKSPACE, SPITZ_KEY_EXOK, SPITZ_KEY_EXCANCEL, 0, 0, 0, 0, 0,  /* 1-16 */
	0, KEY_2, KEY_4, KEY_R, KEY_Y, KEY_8, KEY_I, KEY_O, KEY_P, SPITZ_KEY_EXJOGDOWN, SPITZ_KEY_EXJOGUP, 0, 0, 0, 0, 0, /* 17-32 */
	KEY_TAB, KEY_Q, KEY_E, KEY_T, KEY_G, KEY_U, KEY_J, KEY_K, 0, 0, 0, 0, 0, 0, 0, 0,                                 /* 33-48 */
	SPITZ_KEY_ADDRESS, KEY_W, KEY_S, KEY_F, KEY_V, KEY_H, KEY_M, KEY_L, 0, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, 0,         /* 49-64 */
	SPITZ_KEY_CALENDER, KEY_A, KEY_D, KEY_C, KEY_B, KEY_N, KEY_DOT, 0, KEY_ENTER, KEY_LEFTSHIFT, 0, 0, 0, 0, 0, 0,	  /* 65-80 */
	SPITZ_KEY_MAIL, KEY_Z, KEY_X, KEY_MINUS, KEY_SPACE, KEY_COMMA, 0, KEY_UP, 0, 0, SPITZ_KEY_FN, 0, 0, 0, 0, 0,      /* 81-96 */
	KEY_SYSRQ, SPITZ_KEY_JAP1, SPITZ_KEY_JAP2, SPITZ_KEY_CANCEL, SPITZ_KEY_OK, SPITZ_KEY_MENU, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0, 0, 0, 0  /* 97-112 */
};

static int spitz_strobes[] = {
	SPITZ_GPIO_KEY_STROBE0,
	SPITZ_GPIO_KEY_STROBE1,
	SPITZ_GPIO_KEY_STROBE2,
	SPITZ_GPIO_KEY_STROBE3,
	SPITZ_GPIO_KEY_STROBE4,
	SPITZ_GPIO_KEY_STROBE5,
	SPITZ_GPIO_KEY_STROBE6,
	SPITZ_GPIO_KEY_STROBE7,
	SPITZ_GPIO_KEY_STROBE8,
	SPITZ_GPIO_KEY_STROBE9,
	SPITZ_GPIO_KEY_STROBE10,
};

static int spitz_senses[] = {
	SPITZ_GPIO_KEY_SENSE0,
	SPITZ_GPIO_KEY_SENSE1,
	SPITZ_GPIO_KEY_SENSE2,
	SPITZ_GPIO_KEY_SENSE3,
	SPITZ_GPIO_KEY_SENSE4,
	SPITZ_GPIO_KEY_SENSE5,
	SPITZ_GPIO_KEY_SENSE6,
};

struct spitzkbd {
	unsigned char keycode[ARRAY_SIZE(spitzkbd_keycode)];
	struct input_dev *input;
	char phys[32];

	spinlock_t lock;
	struct timer_list timer;
	struct timer_list htimer;

	unsigned int suspended;
	unsigned long suspend_jiffies;
};

#define KB_DISCHARGE_DELAY	10
#define KB_ACTIVATE_DELAY	10

/* Helper functions for reading the keyboard matrix
 * Note: We should really be using pxa_gpio_mode to alter GPDR but it
 *       requires a function call per GPIO bit which is excessive
 *       when we need to access 11 bits at once, multiple times.
 * These functions must be called within local_irq_save()/local_irq_restore()
 * or similar.
 */
static inline void spitzkbd_discharge_all(void)
{
	/* STROBE All HiZ */
	GPCR0  =  SPITZ_GPIO_G0_STROBE_BIT;
	GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
	GPCR1  =  SPITZ_GPIO_G1_STROBE_BIT;
	GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
	GPCR2  =  SPITZ_GPIO_G2_STROBE_BIT;
	GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
	GPCR3  =  SPITZ_GPIO_G3_STROBE_BIT;
	GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
}

static inline void spitzkbd_activate_all(void)
{
	/* STROBE ALL -> High */
	GPSR0  =  SPITZ_GPIO_G0_STROBE_BIT;
	GPDR0 |=  SPITZ_GPIO_G0_STROBE_BIT;
	GPSR1  =  SPITZ_GPIO_G1_STROBE_BIT;
	GPDR1 |=  SPITZ_GPIO_G1_STROBE_BIT;
	GPSR2  =  SPITZ_GPIO_G2_STROBE_BIT;
	GPDR2 |=  SPITZ_GPIO_G2_STROBE_BIT;
	GPSR3  =  SPITZ_GPIO_G3_STROBE_BIT;
	GPDR3 |=  SPITZ_GPIO_G3_STROBE_BIT;

	udelay(KB_DISCHARGE_DELAY);

	/* Clear any interrupts we may have triggered when altering the GPIO lines */
	GEDR0 = SPITZ_GPIO_G0_SENSE_BIT;
	GEDR1 = SPITZ_GPIO_G1_SENSE_BIT;
	GEDR2 = SPITZ_GPIO_G2_SENSE_BIT;
	GEDR3 = SPITZ_GPIO_G3_SENSE_BIT;
}

static inline void spitzkbd_activate_col(int col)
{
	int gpio = spitz_strobes[col];
	GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
	GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
	GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
	GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
	GPSR(gpio) = GPIO_bit(gpio);
	GPDR(gpio) |= GPIO_bit(gpio);
}

static inline void spitzkbd_reset_col(int col)
{
	int gpio = spitz_strobes[col];
	GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
	GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
	GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
	GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
	GPCR(gpio) = GPIO_bit(gpio);
	GPDR(gpio) |= GPIO_bit(gpio);
}

static inline int spitzkbd_get_row_status(int col)
{
	return ((GPLR0 >> 12) & 0x01) | ((GPLR0 >> 16) & 0x02)
		| ((GPLR2 >> 25) & 0x04) | ((GPLR1 << 1) & 0x08)
		| ((GPLR1 >> 0) & 0x10) | ((GPLR1 >> 1) & 0x60);
}

/*
 * The spitz keyboard only generates interrupts when a key is pressed.
 * When a key is pressed, we enable a timer which then scans the
 * keyboard to detect when the key is released.
 */

/* Scan the hardware keyboard and push any changes up through the input layer */
static void spitzkbd_scankeyboard(struct spitzkbd *spitzkbd_data)
{
	unsigned int row, col, rowd;
	unsigned long flags;
	unsigned int num_pressed, pwrkey = ((GPLR(SPITZ_GPIO_ON_KEY) & GPIO_bit(SPITZ_GPIO_ON_KEY)) != 0);

	if (spitzkbd_data->suspended)
		return;

	spin_lock_irqsave(&spitzkbd_data->lock, flags);

	num_pressed = 0;
	for (col = 0; col < KB_COLS; col++) {
		/*
		 * Discharge the output driver capacitatance
		 * in the keyboard matrix. (Yes it is significant..)
		 */

		spitzkbd_discharge_all();
		udelay(KB_DISCHARGE_DELAY);

		spitzkbd_activate_col(col);
		udelay(KB_ACTIVATE_DELAY);

		rowd = spitzkbd_get_row_status(col);
		for (row = 0; row < KB_ROWS; row++) {
			unsigned int scancode, pressed;

			scancode = SCANCODE(row, col);
			pressed = rowd & KB_ROWMASK(row);

			input_report_key(spitzkbd_data->input, spitzkbd_data->keycode[scancode], pressed);

			if (pressed)
				num_pressed++;
		}
		spitzkbd_reset_col(col);
	}

	spitzkbd_activate_all();

	input_report_key(spitzkbd_data->input, SPITZ_KEY_SYNC, (GPLR(SPITZ_GPIO_SYNC) & GPIO_bit(SPITZ_GPIO_SYNC)) != 0 );
	input_report_key(spitzkbd_data->input, KEY_SUSPEND, pwrkey);

	if (pwrkey && time_after(jiffies, spitzkbd_data->suspend_jiffies + msecs_to_jiffies(1000))) {
		input_event(spitzkbd_data->input, EV_PWR, KEY_SUSPEND, 1);
		spitzkbd_data->suspend_jiffies = jiffies;
	}

	input_sync(spitzkbd_data->input);

	/* if any keys are pressed, enable the timer */
	if (num_pressed)
		mod_timer(&spitzkbd_data->timer, jiffies + msecs_to_jiffies(SCAN_INTERVAL));

	spin_unlock_irqrestore(&spitzkbd_data->lock, flags);
}

/*
 * spitz keyboard interrupt handler.
 */
static irqreturn_t spitzkbd_interrupt(int irq, void *dev_id)
{
	struct spitzkbd *spitzkbd_data = dev_id;

	if (!timer_pending(&spitzkbd_data->timer)) {
		/** wait chattering delay **/
		udelay(20);
		spitzkbd_scankeyboard(spitzkbd_data);
	}

	return IRQ_HANDLED;
}

/*
 * spitz timer checking for released keys
 */
static void spitzkbd_timer_callback(unsigned long data)
{
	struct spitzkbd *spitzkbd_data = (struct spitzkbd *) data;

	spitzkbd_scankeyboard(spitzkbd_data, NULL);
}

/*
 * The hinge switches generate an interrupt.
 * We debounce the switches and pass them to the input system.
 */

static irqreturn_t spitzkbd_hinge_isr(int irq, void *dev_id)
{
	struct spitzkbd *spitzkbd_data = dev_id;

	if (!timer_pending(&spitzkbd_data->htimer))
		mod_timer(&spitzkbd_data->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));

	return IRQ_HANDLED;
}

#define HINGE_STABLE_COUNT 2
static int sharpsl_hinge_state;
static int hinge_count;

static void spitzkbd_hinge_timer(unsigned long data)
{
	struct spitzkbd *spitzkbd_data = (struct spitzkbd *) data;
	unsigned long state;
	unsigned long flags;

	state = GPLR(SPITZ_GPIO_SWA) & (GPIO_bit(SPITZ_GPIO_SWA)|GPIO_bit(SPITZ_GPIO_SWB));
	state |= (GPLR(SPITZ_GPIO_AK_INT) & GPIO_bit(SPITZ_GPIO_AK_INT));
	if (state != sharpsl_hinge_state) {
		hinge_count = 0;
		sharpsl_hinge_state = state;
	} else if (hinge_count < HINGE_STABLE_COUNT) {
		hinge_count++;
	}

	if (hinge_count >= HINGE_STABLE_COUNT) {
		spin_lock_irqsave(&spitzkbd_data->lock, flags);

		input_report_switch(spitzkbd_data->input, SW_LID, ((GPLR(SPITZ_GPIO_SWA) & GPIO_bit(SPITZ_GPIO_SWA)) != 0));
		input_report_switch(spitzkbd_data->input, SW_TABLET_MODE, ((GPLR(SPITZ_GPIO_SWB) & GPIO_bit(SPITZ_GPIO_SWB)) != 0));
		input_report_switch(spitzkbd_data->input, SW_HEADPHONE_INSERT, ((GPLR(SPITZ_GPIO_AK_INT) & GPIO_bit(SPITZ_GPIO_AK_INT)) != 0));
		input_sync(spitzkbd_data->input);

		spin_unlock_irqrestore(&spitzkbd_data->lock, flags);
	} else {
		mod_timer(&spitzkbd_data->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));
	}
}

#ifdef CONFIG_PM
static int spitzkbd_suspend(struct platform_device *dev, pm_message_t state)
{
	int i;
	struct spitzkbd *spitzkbd = platform_get_drvdata(dev);
	spitzkbd->suspended = 1;

	/* Set Strobe lines as inputs - *except* strobe line 0 leave this
	   enabled so we can detect a power button press for resume */
	for (i = 1; i < SPITZ_KEY_STROBE_NUM; i++)
		pxa_gpio_mode(spitz_strobes[i] | GPIO_IN);

	return 0;
}

static int spitzkbd_resume(struct platform_device *dev)
{
	int i;
	struct spitzkbd *spitzkbd = platform_get_drvdata(dev);

	for (i = 0; i < SPITZ_KEY_STROBE_NUM; i++)
		pxa_gpio_mode(spitz_strobes[i] | GPIO_OUT | GPIO_DFLT_HIGH);

	/* Upon resume, ignore the suspend key for a short while */
	spitzkbd->suspend_jiffies = jiffies;
	spitzkbd->suspended = 0;

	return 0;
}
#else
#define spitzkbd_suspend	NULL
#define spitzkbd_resume		NULL
#endif

static int __init spitzkbd_probe(struct platform_device *dev)
{
	struct spitzkbd *spitzkbd;
	struct input_dev *input_dev;
	int i;

	spitzkbd = kzalloc(sizeof(struct spitzkbd), GFP_KERNEL);
	if (!spitzkbd)
		return -ENOMEM;

	input_dev = input_allocate_device();
	if (!input_dev) {
		kfree(spitzkbd);
		return -ENOMEM;
	}

	platform_set_drvdata(dev, spitzkbd);
	strcpy(spitzkbd->phys, "spitzkbd/input0");

	spin_lock_init(&spitzkbd->lock);

	/* Init Keyboard rescan timer */
	init_timer(&spitzkbd->timer);
	spitzkbd->timer.function = spitzkbd_timer_callback;
	spitzkbd->timer.data = (unsigned long) spitzkbd;

	/* Init Hinge Timer */
	init_timer(&spitzkbd->htimer);
	spitzkbd->htimer.function = spitzkbd_hinge_timer;
	spitzkbd->htimer.data = (unsigned long) spitzkbd;

	spitzkbd->suspend_jiffies = jiffies;

	spitzkbd->input = input_dev;

	input_dev->private = spitzkbd;
	input_dev->name = "Spitz Keyboard";
	input_dev->phys = spitzkbd->phys;
	input_dev->cdev.dev = &dev->dev;

	input_dev->id.bustype = BUS_HOST;
	input_dev->id.vendor = 0x0001;
	input_dev->id.product = 0x0001;
	input_dev->id.version = 0x0100;

	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_PWR) | BIT(EV_SW);
	input_dev->keycode = spitzkbd->keycode;
	input_dev->keycodesize = sizeof(unsigned char);
	input_dev->keycodemax = ARRAY_SIZE(spitzkbd_keycode);

	memcpy(spitzkbd->keycode, spitzkbd_keycode, sizeof(spitzkbd->keycode));
	for (i = 0; i < ARRAY_SIZE(spitzkbd_keycode); i++)
		set_bit(spitzkbd->keycode[i], input_dev->keybit);
	clear_bit(0, input_dev->keybit);
	set_bit(SW_LID, input_dev->swbit);
	set_bit(SW_TABLET_MODE, input_dev->swbit);
	set_bit(SW_HEADPHONE_INSERT, input_dev->swbit);

	input_register_device(input_dev);

	mod_timer(&spitzkbd->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));

	/* Setup sense interrupts - RisingEdge Detect, sense lines as inputs */
	for (i = 0; i < SPITZ_KEY_SENSE_NUM; i++) {
		pxa_gpio_mode(spitz_senses[i] | GPIO_IN);
		if (request_irq(IRQ_GPIO(spitz_senses[i]), spitzkbd_interrupt,
				IRQF_DISABLED|IRQF_TRIGGER_RISING,
				"Spitzkbd Sense", spitzkbd))
			printk(KERN_WARNING "spitzkbd: Can't get Sense IRQ: %d!\n", i);
	}

	/* Set Strobe lines as outputs - set high */
	for (i = 0; i < SPITZ_KEY_STROBE_NUM; i++)
		pxa_gpio_mode(spitz_strobes[i] | GPIO_OUT | GPIO_DFLT_HIGH);

	pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN);
	pxa_gpio_mode(SPITZ_GPIO_ON_KEY | GPIO_IN);
	pxa_gpio_mode(SPITZ_GPIO_SWA | GPIO_IN);
	pxa_gpio_mode(SPITZ_GPIO_SWB | GPIO_IN);

	request_irq(SPITZ_IRQ_GPIO_SYNC, spitzkbd_interrupt,
		    IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
		    "Spitzkbd Sync", spitzkbd);
	request_irq(SPITZ_IRQ_GPIO_ON_KEY, spitzkbd_interrupt,
		    IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
		    "Spitzkbd PwrOn", spitzkbd);
	request_irq(SPITZ_IRQ_GPIO_SWA, spitzkbd_hinge_isr,
		    IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
		    "Spitzkbd SWA", spitzkbd);
	request_irq(SPITZ_IRQ_GPIO_SWB, spitzkbd_hinge_isr,
		    IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
		    "Spitzkbd SWB", spitzkbd);
 	request_irq(SPITZ_IRQ_GPIO_AK_INT, spitzkbd_hinge_isr,
		    IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
		    "Spitzkbd HP", spitzkbd);

	printk(KERN_INFO "input: Spitz Keyboard Registered\n");

	return 0;
}

static int spitzkbd_remove(struct platform_device *dev)
{
	int i;
	struct spitzkbd *spitzkbd = platform_get_drvdata(dev);

	for (i = 0; i < SPITZ_KEY_SENSE_NUM; i++)
		free_irq(IRQ_GPIO(spitz_senses[i]), spitzkbd);

	free_irq(SPITZ_IRQ_GPIO_SYNC, spitzkbd);
	free_irq(SPITZ_IRQ_GPIO_ON_KEY, spitzkbd);
	free_irq(SPITZ_IRQ_GPIO_SWA, spitzkbd);
	free_irq(SPITZ_IRQ_GPIO_SWB, spitzkbd);
	free_irq(SPITZ_IRQ_GPIO_AK_INT, spitzkbd);

	del_timer_sync(&spitzkbd->htimer);
	del_timer_sync(&spitzkbd->timer);

	input_unregister_device(spitzkbd->input);

	kfree(spitzkbd);

	return 0;
}

static struct platform_driver spitzkbd_driver = {
	.probe		= spitzkbd_probe,
	.remove		= spitzkbd_remove,
	.suspend	= spitzkbd_suspend,
	.resume		= spitzkbd_resume,
	.driver		= {
		.name	= "spitz-keyboard",
	},
};

static int __devinit spitzkbd_init(void)
{
	return platform_driver_register(&spitzkbd_driver);
}

static void __exit spitzkbd_exit(void)
{
	platform_driver_unregister(&spitzkbd_driver);
}

module_init(spitzkbd_init);
module_exit(spitzkbd_exit);

MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
MODULE_DESCRIPTION("Spitz Keyboard Driver");
MODULE_LICENSE("GPLv2");
Commit	Line	Data
fff71312 RP	1	/*
	2	* Keyboard driver for Sharp Spitz, Borzoi and Akita (SL-Cxx00 series)
	3	*
	4	* Copyright (c) 2005 Richard Purdie
	5	*
	6	* Based on corgikbd.c
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*
	12	*/
	13
	14	#include <linux/delay.h>
d052d1be	15	#include <linux/platform_device.h>
fff71312 RP	16	#include <linux/init.h>
	17	#include <linux/input.h>
	18	#include <linux/interrupt.h>
	19	#include <linux/jiffies.h>
	20	#include <linux/module.h>
	21	#include <linux/slab.h>
fff71312 RP	22
	23	#include <asm/arch/spitz.h>
	24	#include <asm/arch/hardware.h>
	25	#include <asm/arch/pxa-regs.h>
	26
	27	#define KB_ROWS 7
	28	#define KB_COLS 11
	29	#define KB_ROWMASK(r) (1 << (r))
	30	#define SCANCODE(r,c) (((r)<<4) + (c) + 1)
	31	#define NR_SCANCODES ((KB_ROWS<<4) + 1)
	32
4872f788	33	#define SCAN_INTERVAL (50) /* ms */
fff71312 RP	34	#define HINGE_SCAN_INTERVAL (150) /* ms */
	35
	36	#define SPITZ_KEY_CALENDER KEY_F1
	37	#define SPITZ_KEY_ADDRESS KEY_F2
	38	#define SPITZ_KEY_FN KEY_F3
	39	#define SPITZ_KEY_CANCEL KEY_F4
	40	#define SPITZ_KEY_EXOK KEY_F5
	41	#define SPITZ_KEY_EXCANCEL KEY_F6
	42	#define SPITZ_KEY_EXJOGDOWN KEY_F7
	43	#define SPITZ_KEY_EXJOGUP KEY_F8
	44	#define SPITZ_KEY_JAP1 KEY_LEFTALT
	45	#define SPITZ_KEY_JAP2 KEY_RIGHTCTRL
	46	#define SPITZ_KEY_SYNC KEY_F9
	47	#define SPITZ_KEY_MAIL KEY_F10
	48	#define SPITZ_KEY_OK KEY_F11
	49	#define SPITZ_KEY_MENU KEY_F12
	50
	51	static unsigned char spitzkbd_keycode[NR_SCANCODES] = {
	52	0, /* 0 */
	53	KEY_LEFTCTRL, KEY_1, KEY_3, KEY_5, KEY_6, KEY_7, KEY_9, KEY_0, KEY_BACKSPACE, SPITZ_KEY_EXOK, SPITZ_KEY_EXCANCEL, 0, 0, 0, 0, 0, /* 1-16 */
	54	0, KEY_2, KEY_4, KEY_R, KEY_Y, KEY_8, KEY_I, KEY_O, KEY_P, SPITZ_KEY_EXJOGDOWN, SPITZ_KEY_EXJOGUP, 0, 0, 0, 0, 0, /* 17-32 */
	55	KEY_TAB, KEY_Q, KEY_E, KEY_T, KEY_G, KEY_U, KEY_J, KEY_K, 0, 0, 0, 0, 0, 0, 0, 0, /* 33-48 */
f11a7c09 RP	56	SPITZ_KEY_ADDRESS, KEY_W, KEY_S, KEY_F, KEY_V, KEY_H, KEY_M, KEY_L, 0, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, 0, /* 49-64 */
f11a7c09 RP	57	SPITZ_KEY_CALENDER, KEY_A, KEY_D, KEY_C, KEY_B, KEY_N, KEY_DOT, 0, KEY_ENTER, KEY_LEFTSHIFT, 0, 0, 0, 0, 0, 0, /* 65-80 */
fff71312 RP	58	SPITZ_KEY_MAIL, KEY_Z, KEY_X, KEY_MINUS, KEY_SPACE, KEY_COMMA, 0, KEY_UP, 0, 0, SPITZ_KEY_FN, 0, 0, 0, 0, 0, /* 81-96 */
	59	KEY_SYSRQ, SPITZ_KEY_JAP1, SPITZ_KEY_JAP2, SPITZ_KEY_CANCEL, SPITZ_KEY_OK, SPITZ_KEY_MENU, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0, 0, 0, 0 /* 97-112 */
	60	};
	61
	62	static int spitz_strobes[] = {
	63	SPITZ_GPIO_KEY_STROBE0,
	64	SPITZ_GPIO_KEY_STROBE1,
	65	SPITZ_GPIO_KEY_STROBE2,
	66	SPITZ_GPIO_KEY_STROBE3,
	67	SPITZ_GPIO_KEY_STROBE4,
	68	SPITZ_GPIO_KEY_STROBE5,
	69	SPITZ_GPIO_KEY_STROBE6,
	70	SPITZ_GPIO_KEY_STROBE7,
	71	SPITZ_GPIO_KEY_STROBE8,
	72	SPITZ_GPIO_KEY_STROBE9,
	73	SPITZ_GPIO_KEY_STROBE10,
	74	};
	75
	76	static int spitz_senses[] = {
	77	SPITZ_GPIO_KEY_SENSE0,
	78	SPITZ_GPIO_KEY_SENSE1,
	79	SPITZ_GPIO_KEY_SENSE2,
	80	SPITZ_GPIO_KEY_SENSE3,
	81	SPITZ_GPIO_KEY_SENSE4,
	82	SPITZ_GPIO_KEY_SENSE5,
	83	SPITZ_GPIO_KEY_SENSE6,
	84	};
	85
	86	struct spitzkbd {
	87	unsigned char keycode[ARRAY_SIZE(spitzkbd_keycode)];
3c42f0c3	88	struct input_dev *input;
fff71312 RP	89	char phys[32];
	90
	91	spinlock_t lock;
	92	struct timer_list timer;
	93	struct timer_list htimer;
	94
	95	unsigned int suspended;
	96	unsigned long suspend_jiffies;
	97	};
	98
	99	#define KB_DISCHARGE_DELAY 10
	100	#define KB_ACTIVATE_DELAY 10
	101
	102	/* Helper functions for reading the keyboard matrix
	103	* Note: We should really be using pxa_gpio_mode to alter GPDR but it
	104	* requires a function call per GPIO bit which is excessive
	105	* when we need to access 11 bits at once, multiple times.
	106	* These functions must be called within local_irq_save()/local_irq_restore()
	107	* or similar.
	108	*/
	109	static inline void spitzkbd_discharge_all(void)
	110	{
	111	/* STROBE All HiZ */
	112	GPCR0 = SPITZ_GPIO_G0_STROBE_BIT;
	113	GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
	114	GPCR1 = SPITZ_GPIO_G1_STROBE_BIT;
	115	GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
	116	GPCR2 = SPITZ_GPIO_G2_STROBE_BIT;
	117	GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
	118	GPCR3 = SPITZ_GPIO_G3_STROBE_BIT;
	119	GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
	120	}
	121
	122	static inline void spitzkbd_activate_all(void)
	123	{
	124	/* STROBE ALL -> High */
	125	GPSR0 = SPITZ_GPIO_G0_STROBE_BIT;
	126	GPDR0 \|= SPITZ_GPIO_G0_STROBE_BIT;
	127	GPSR1 = SPITZ_GPIO_G1_STROBE_BIT;
	128	GPDR1 \|= SPITZ_GPIO_G1_STROBE_BIT;
	129	GPSR2 = SPITZ_GPIO_G2_STROBE_BIT;
	130	GPDR2 \|= SPITZ_GPIO_G2_STROBE_BIT;
	131	GPSR3 = SPITZ_GPIO_G3_STROBE_BIT;
	132	GPDR3 \|= SPITZ_GPIO_G3_STROBE_BIT;
	133
	134	udelay(KB_DISCHARGE_DELAY);
	135
	136	/* Clear any interrupts we may have triggered when altering the GPIO lines */
	137	GEDR0 = SPITZ_GPIO_G0_SENSE_BIT;
	138	GEDR1 = SPITZ_GPIO_G1_SENSE_BIT;
	139	GEDR2 = SPITZ_GPIO_G2_SENSE_BIT;
	140	GEDR3 = SPITZ_GPIO_G3_SENSE_BIT;
	141	}
	142
	143	static inline void spitzkbd_activate_col(int col)
	144	{
	145	int gpio = spitz_strobes[col];
	146	GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
	147	GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
	148	GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
	149	GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
	150	GPSR(gpio) = GPIO_bit(gpio);
	151	GPDR(gpio) \|= GPIO_bit(gpio);
	152	}
153
154	static inline void spitzkbd_reset_col(int col)
155	{
156	int gpio = spitz_strobes[col];
157	GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
158	GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
159	GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
160	GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
161	GPCR(gpio) = GPIO_bit(gpio);
162	GPDR(gpio) \|= GPIO_bit(gpio);
163	}
164
165	static inline int spitzkbd_get_row_status(int col)
166	{
167	return ((GPLR0 >> 12) & 0x01) \| ((GPLR0 >> 16) & 0x02)
168	\| ((GPLR2 >> 25) & 0x04) \| ((GPLR1 << 1) & 0x08)
169	\| ((GPLR1 >> 0) & 0x10) \| ((GPLR1 >> 1) & 0x60);
170	}
171
172	/*
173	* The spitz keyboard only generates interrupts when a key is pressed.
174	* When a key is pressed, we enable a timer which then scans the
175	* keyboard to detect when the key is released.
176	*/
177
178	/* Scan the hardware keyboard and push any changes up through the input layer */
7d12e780	179	static void spitzkbd_scankeyboard(struct spitzkbd *spitzkbd_data)
fff71312 RP	180	{
	181	unsigned int row, col, rowd;
	182	unsigned long flags;
	183	unsigned int num_pressed, pwrkey = ((GPLR(SPITZ_GPIO_ON_KEY) & GPIO_bit(SPITZ_GPIO_ON_KEY)) != 0);
	184
	185	if (spitzkbd_data->suspended)
	186	return;
	187
	188	spin_lock_irqsave(&spitzkbd_data->lock, flags);
	189
fff71312 RP	190	num_pressed = 0;
	191	for (col = 0; col < KB_COLS; col++) {
	192	/*
	193	* Discharge the output driver capacitatance
	194	* in the keyboard matrix. (Yes it is significant..)
	195	*/
	196
	197	spitzkbd_discharge_all();
	198	udelay(KB_DISCHARGE_DELAY);
	199
	200	spitzkbd_activate_col(col);
	201	udelay(KB_ACTIVATE_DELAY);
	202
	203	rowd = spitzkbd_get_row_status(col);
	204	for (row = 0; row < KB_ROWS; row++) {
	205	unsigned int scancode, pressed;
	206
	207	scancode = SCANCODE(row, col);
	208	pressed = rowd & KB_ROWMASK(row);
	209
3c42f0c3	210	input_report_key(spitzkbd_data->input, spitzkbd_data->keycode[scancode], pressed);
fff71312 RP	211
	212	if (pressed)
	213	num_pressed++;
	214	}
	215	spitzkbd_reset_col(col);
	216	}
	217
	218	spitzkbd_activate_all();
	219
3c42f0c3 DT	220	input_report_key(spitzkbd_data->input, SPITZ_KEY_SYNC, (GPLR(SPITZ_GPIO_SYNC) & GPIO_bit(SPITZ_GPIO_SYNC)) != 0 );
3c42f0c3 DT	221	input_report_key(spitzkbd_data->input, KEY_SUSPEND, pwrkey);
fff71312 RP	222
fff71312 RP	223	if (pwrkey && time_after(jiffies, spitzkbd_data->suspend_jiffies + msecs_to_jiffies(1000))) {
3c42f0c3	224	input_event(spitzkbd_data->input, EV_PWR, KEY_SUSPEND, 1);
fff71312 RP	225	spitzkbd_data->suspend_jiffies = jiffies;
	226	}
	227
3c42f0c3	228	input_sync(spitzkbd_data->input);
fff71312 RP	229
	230	/* if any keys are pressed, enable the timer */
	231	if (num_pressed)
4872f788	232	mod_timer(&spitzkbd_data->timer, jiffies + msecs_to_jiffies(SCAN_INTERVAL));
fff71312 RP	233
	234	spin_unlock_irqrestore(&spitzkbd_data->lock, flags);
	235	}
	236
	237	/*
	238	* spitz keyboard interrupt handler.
	239	*/
7d12e780	240	static irqreturn_t spitzkbd_interrupt(int irq, void *dev_id)
fff71312 RP	241	{
	242	struct spitzkbd *spitzkbd_data = dev_id;
	243
	244	if (!timer_pending(&spitzkbd_data->timer)) {
	245	/ wait chattering delay /
	246	udelay(20);
7d12e780	247	spitzkbd_scankeyboard(spitzkbd_data);
fff71312 RP	248	}
	249
	250	return IRQ_HANDLED;
	251	}
	252
	253	/*
	254	* spitz timer checking for released keys
	255	*/
	256	static void spitzkbd_timer_callback(unsigned long data)
	257	{
	258	struct spitzkbd spitzkbd_data = (struct spitzkbd ) data;
3c42f0c3	259
fff71312 RP	260	spitzkbd_scankeyboard(spitzkbd_data, NULL);
	261	}
	262
	263	/*
	264	* The hinge switches generate an interrupt.
	265	* We debounce the switches and pass them to the input system.
	266	*/
	267
7d12e780	268	static irqreturn_t spitzkbd_hinge_isr(int irq, void *dev_id)
fff71312 RP	269	{
	270	struct spitzkbd *spitzkbd_data = dev_id;
	271
	272	if (!timer_pending(&spitzkbd_data->htimer))
	273	mod_timer(&spitzkbd_data->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));
	274
	275	return IRQ_HANDLED;
	276	}
	277
	278	#define HINGE_STABLE_COUNT 2
	279	static int sharpsl_hinge_state;
	280	static int hinge_count;
	281
	282	static void spitzkbd_hinge_timer(unsigned long data)
	283	{
	284	struct spitzkbd spitzkbd_data = (struct spitzkbd ) data;
	285	unsigned long state;
	286	unsigned long flags;
	287
	288	state = GPLR(SPITZ_GPIO_SWA) & (GPIO_bit(SPITZ_GPIO_SWA)\|GPIO_bit(SPITZ_GPIO_SWB));
4872f788	289	state \|= (GPLR(SPITZ_GPIO_AK_INT) & GPIO_bit(SPITZ_GPIO_AK_INT));
fff71312 RP	290	if (state != sharpsl_hinge_state) {
	291	hinge_count = 0;
	292	sharpsl_hinge_state = state;
	293	} else if (hinge_count < HINGE_STABLE_COUNT) {
	294	hinge_count++;
	295	}
	296
	297	if (hinge_count >= HINGE_STABLE_COUNT) {
	298	spin_lock_irqsave(&spitzkbd_data->lock, flags);
	299
ed8f9e2f RP	300	input_report_switch(spitzkbd_data->input, SW_LID, ((GPLR(SPITZ_GPIO_SWA) & GPIO_bit(SPITZ_GPIO_SWA)) != 0));
	301	input_report_switch(spitzkbd_data->input, SW_TABLET_MODE, ((GPLR(SPITZ_GPIO_SWB) & GPIO_bit(SPITZ_GPIO_SWB)) != 0));
	302	input_report_switch(spitzkbd_data->input, SW_HEADPHONE_INSERT, ((GPLR(SPITZ_GPIO_AK_INT) & GPIO_bit(SPITZ_GPIO_AK_INT)) != 0));
3c42f0c3	303	input_sync(spitzkbd_data->input);
fff71312 RP	304
	305	spin_unlock_irqrestore(&spitzkbd_data->lock, flags);
	306	} else {
	307	mod_timer(&spitzkbd_data->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));
	308	}
	309	}
	310
	311	#ifdef CONFIG_PM
3ae5eaec	312	static int spitzkbd_suspend(struct platform_device *dev, pm_message_t state)
fff71312	313	{
9480e307	314	int i;
3ae5eaec	315	struct spitzkbd *spitzkbd = platform_get_drvdata(dev);
9480e307 RK	316	spitzkbd->suspended = 1;
	317
	318	/* Set Strobe lines as inputs - except strobe line 0 leave this
	319	enabled so we can detect a power button press for resume */
	320	for (i = 1; i < SPITZ_KEY_STROBE_NUM; i++)
	321	pxa_gpio_mode(spitz_strobes[i] \| GPIO_IN);
	322
fff71312 RP	323	return 0;
	324	}
	325
3ae5eaec	326	static int spitzkbd_resume(struct platform_device *dev)
fff71312	327	{
9480e307	328	int i;
3ae5eaec	329	struct spitzkbd *spitzkbd = platform_get_drvdata(dev);
fff71312	330
9480e307 RK	331	for (i = 0; i < SPITZ_KEY_STROBE_NUM; i++)
	332	pxa_gpio_mode(spitz_strobes[i] \| GPIO_OUT \| GPIO_DFLT_HIGH);
	333
	334	/* Upon resume, ignore the suspend key for a short while */
	335	spitzkbd->suspend_jiffies = jiffies;
	336	spitzkbd->suspended = 0;
fff71312	337
fff71312 RP	338	return 0;
	339	}
	340	#else
	341	#define spitzkbd_suspend NULL
	342	#define spitzkbd_resume NULL
	343	#endif
	344
3ae5eaec	345	static int __init spitzkbd_probe(struct platform_device *dev)
fff71312	346	{
fff71312	347	struct spitzkbd *spitzkbd;
3c42f0c3 DT	348	struct input_dev *input_dev;
3c42f0c3 DT	349	int i;
fff71312 RP	350
	351	spitzkbd = kzalloc(sizeof(struct spitzkbd), GFP_KERNEL);
	352	if (!spitzkbd)
	353	return -ENOMEM;
	354
3c42f0c3 DT	355	input_dev = input_allocate_device();
	356	if (!input_dev) {
	357	kfree(spitzkbd);
	358	return -ENOMEM;
	359	}
	360
3ae5eaec	361	platform_set_drvdata(dev, spitzkbd);
fff71312 RP	362	strcpy(spitzkbd->phys, "spitzkbd/input0");
	363
	364	spin_lock_init(&spitzkbd->lock);
	365
	366	/* Init Keyboard rescan timer */
	367	init_timer(&spitzkbd->timer);
	368	spitzkbd->timer.function = spitzkbd_timer_callback;
	369	spitzkbd->timer.data = (unsigned long) spitzkbd;
	370
	371	/* Init Hinge Timer */
	372	init_timer(&spitzkbd->htimer);
	373	spitzkbd->htimer.function = spitzkbd_hinge_timer;
	374	spitzkbd->htimer.data = (unsigned long) spitzkbd;
	375
3c42f0c3 DT	376	spitzkbd->suspend_jiffies = jiffies;
	377
	378	spitzkbd->input = input_dev;
	379
	380	input_dev->private = spitzkbd;
	381	input_dev->name = "Spitz Keyboard";
	382	input_dev->phys = spitzkbd->phys;
3ae5eaec	383	input_dev->cdev.dev = &dev->dev;
3c42f0c3 DT	384
	385	input_dev->id.bustype = BUS_HOST;
	386	input_dev->id.vendor = 0x0001;
	387	input_dev->id.product = 0x0001;
	388	input_dev->id.version = 0x0100;
	389
	390	input_dev->evbit[0] = BIT(EV_KEY) \| BIT(EV_REP) \| BIT(EV_PWR) \| BIT(EV_SW);
	391	input_dev->keycode = spitzkbd->keycode;
	392	input_dev->keycodesize = sizeof(unsigned char);
	393	input_dev->keycodemax = ARRAY_SIZE(spitzkbd_keycode);
fff71312 RP	394
	395	memcpy(spitzkbd->keycode, spitzkbd_keycode, sizeof(spitzkbd->keycode));
	396	for (i = 0; i < ARRAY_SIZE(spitzkbd_keycode); i++)
3c42f0c3 DT	397	set_bit(spitzkbd->keycode[i], input_dev->keybit);
3c42f0c3 DT	398	clear_bit(0, input_dev->keybit);
ed8f9e2f RP	399	set_bit(SW_LID, input_dev->swbit);
	400	set_bit(SW_TABLET_MODE, input_dev->swbit);
	401	set_bit(SW_HEADPHONE_INSERT, input_dev->swbit);
3c42f0c3 DT	402
3c42f0c3 DT	403	input_register_device(input_dev);
fff71312	404
fff71312 RP	405	mod_timer(&spitzkbd->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));
	406
	407	/* Setup sense interrupts - RisingEdge Detect, sense lines as inputs */
	408	for (i = 0; i < SPITZ_KEY_SENSE_NUM; i++) {
	409	pxa_gpio_mode(spitz_senses[i] \| GPIO_IN);
	410	if (request_irq(IRQ_GPIO(spitz_senses[i]), spitzkbd_interrupt,
dace1453	411	IRQF_DISABLED\|IRQF_TRIGGER_RISING,
9ded96f2	412	"Spitzkbd Sense", spitzkbd))
fff71312	413	printk(KERN_WARNING "spitzkbd: Can't get Sense IRQ: %d!\n", i);
fff71312 RP	414	}
	415
	416	/* Set Strobe lines as outputs - set high */
	417	for (i = 0; i < SPITZ_KEY_STROBE_NUM; i++)
	418	pxa_gpio_mode(spitz_strobes[i] \| GPIO_OUT \| GPIO_DFLT_HIGH);
	419
	420	pxa_gpio_mode(SPITZ_GPIO_SYNC \| GPIO_IN);
	421	pxa_gpio_mode(SPITZ_GPIO_ON_KEY \| GPIO_IN);
	422	pxa_gpio_mode(SPITZ_GPIO_SWA \| GPIO_IN);
	423	pxa_gpio_mode(SPITZ_GPIO_SWB \| GPIO_IN);
	424
9ded96f2	425	request_irq(SPITZ_IRQ_GPIO_SYNC, spitzkbd_interrupt,
dace1453	426	IRQF_DISABLED \| IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING,
9ded96f2 RK	427	"Spitzkbd Sync", spitzkbd);
9ded96f2 RK	428	request_irq(SPITZ_IRQ_GPIO_ON_KEY, spitzkbd_interrupt,
dace1453	429	IRQF_DISABLED \| IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING,
9ded96f2 RK	430	"Spitzkbd PwrOn", spitzkbd);
9ded96f2 RK	431	request_irq(SPITZ_IRQ_GPIO_SWA, spitzkbd_hinge_isr,
dace1453	432	IRQF_DISABLED \| IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING,
9ded96f2 RK	433	"Spitzkbd SWA", spitzkbd);
9ded96f2 RK	434	request_irq(SPITZ_IRQ_GPIO_SWB, spitzkbd_hinge_isr,
dace1453	435	IRQF_DISABLED \| IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING,
9ded96f2	436	"Spitzkbd SWB", spitzkbd);
4872f788	437	request_irq(SPITZ_IRQ_GPIO_AK_INT, spitzkbd_hinge_isr,
dace1453	438	IRQF_DISABLED \| IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING,
4872f788	439	"Spitzkbd HP", spitzkbd);
fff71312 RP	440
	441	printk(KERN_INFO "input: Spitz Keyboard Registered\n");
	442
	443	return 0;
	444	}
	445
3ae5eaec	446	static int spitzkbd_remove(struct platform_device *dev)
fff71312 RP	447	{
fff71312 RP	448	int i;
3ae5eaec	449	struct spitzkbd *spitzkbd = platform_get_drvdata(dev);
fff71312 RP	450
	451	for (i = 0; i < SPITZ_KEY_SENSE_NUM; i++)
	452	free_irq(IRQ_GPIO(spitz_senses[i]), spitzkbd);
	453
	454	free_irq(SPITZ_IRQ_GPIO_SYNC, spitzkbd);
	455	free_irq(SPITZ_IRQ_GPIO_ON_KEY, spitzkbd);
	456	free_irq(SPITZ_IRQ_GPIO_SWA, spitzkbd);
	457	free_irq(SPITZ_IRQ_GPIO_SWB, spitzkbd);
4872f788	458	free_irq(SPITZ_IRQ_GPIO_AK_INT, spitzkbd);
fff71312 RP	459
	460	del_timer_sync(&spitzkbd->htimer);
	461	del_timer_sync(&spitzkbd->timer);
	462
3c42f0c3	463	input_unregister_device(spitzkbd->input);
fff71312 RP	464
	465	kfree(spitzkbd);
	466
	467	return 0;
	468	}
	469
3ae5eaec	470	static struct platform_driver spitzkbd_driver = {
fff71312 RP	471	.probe = spitzkbd_probe,
	472	.remove = spitzkbd_remove,
	473	.suspend = spitzkbd_suspend,
	474	.resume = spitzkbd_resume,
3ae5eaec RK	475	.driver = {
	476	.name = "spitz-keyboard",
	477	},
fff71312 RP	478	};
	479
	480	static int __devinit spitzkbd_init(void)
	481	{
3ae5eaec	482	return platform_driver_register(&spitzkbd_driver);
fff71312 RP	483	}
	484
	485	static void __exit spitzkbd_exit(void)
	486	{
3ae5eaec	487	platform_driver_unregister(&spitzkbd_driver);
fff71312 RP	488	}
	489
	490	module_init(spitzkbd_init);
	491	module_exit(spitzkbd_exit);
	492
	493	MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
	494	MODULE_DESCRIPTION("Spitz Keyboard Driver");
	495	MODULE_LICENSE("GPLv2");