Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

9 files changed, 2115 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
new file mode 100644
index 0000000..7e99127
--- /dev/null
+++ b/drivers/input/touchscreen/Kconfig
@@ -0,0 +1,98 @@
+#
+# Mouse driver configuration
+#
+menuconfig INPUT_TOUCHSCREEN
+	bool "Touchscreens"
+	help
+	  Say Y here, and a list of supported touchscreens will be displayed.
+	  This option doesn't affect the kernel.
+
+	  If unsure, say Y.
+
+if INPUT_TOUCHSCREEN
+
+config TOUCHSCREEN_BITSY
+	tristate "Compaq iPAQ H3600 (Bitsy) touchscreen"
+	depends on SA1100_BITSY
+	select SERIO
+	help
+	  Say Y here if you have the h3600 (Bitsy) touchscreen.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called h3600_ts_input.
+
+config TOUCHSCREEN_CORGI
+	tristate "Corgi touchscreen (for Sharp SL-C7xx)"
+	depends on PXA_SHARPSL
+	default y	
+	help
+	  Say Y here to enable the driver for the touchscreen on the 
+	  Sharp SL-C7xx series of PDAs.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ads7846_ts.
+
+config TOUCHSCREEN_GUNZE
+	tristate "Gunze AHL-51S touchscreen"
+	select SERIO
+	help
+	  Say Y here if you have the Gunze AHL-51 touchscreen connected to
+	  your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called gunze.
+
+config TOUCHSCREEN_ELO
+	tristate "Elo serial touchscreens"
+	select SERIO
+	help
+	  Say Y here if you have an Elo serial touchscreen connected to
+	  your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called gunze.
+
+config TOUCHSCREEN_MTOUCH
+	tristate "MicroTouch serial touchscreens"
+	select SERIO
+	help
+	  Say Y here if you have a MicroTouch (3M) serial touchscreen connected to
+	  your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called mtouch.
+
+config TOUCHSCREEN_MK712
+	tristate "ICS MicroClock MK712 touchscreen"
+	help
+	  Say Y here if you have the ICS MicroClock MK712 touchscreen
+	  controller chip in your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called mk712.
+
+config TOUCHSCREEN_HP600
+	tristate "HP Jornada 680/690 touchscreen"
+	depends on SH_HP600 && SH_ADC
+	help
+	  Say Y here if you have a HP Jornada 680 or 690 and want to
+          support the built-in touchscreen.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called hp680_ts_input.
+
+endif
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
new file mode 100644
index 0000000..6842869
--- /dev/null
+++ b/drivers/input/touchscreen/Makefile
@@ -0,0 +1,13 @@
+#
+# Makefile for the mouse drivers.
+#
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_TOUCHSCREEN_BITSY)	+= h3600_ts_input.o
+obj-$(CONFIG_TOUCHSCREEN_CORGI)	+= corgi_ts.o
+obj-$(CONFIG_TOUCHSCREEN_GUNZE)	+= gunze.o
+obj-$(CONFIG_TOUCHSCREEN_ELO)	+= elo.o
+obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtouch.o
+obj-$(CONFIG_TOUCHSCREEN_MK712)	+= mk712.o
+obj-$(CONFIG_TOUCHSCREEN_HP600)	+= hp680_ts_input.o
diff --git a/drivers/input/touchscreen/corgi_ts.c b/drivers/input/touchscreen/corgi_ts.c
new file mode 100644
index 0000000..3f8b61c
--- /dev/null
+++ b/drivers/input/touchscreen/corgi_ts.c
@@ -0,0 +1,380 @@
+/*
+ *  Touchscreen driver for Sharp Corgi models (SL-C7xx)
+ *
+ *  Copyright (c) 2004-2005 Richard Purdie
+ *
+ *  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/device.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <asm/irq.h>
+
+#include <asm/arch/corgi.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/pxa-regs.h>
+
+
+#define PWR_MODE_ACTIVE		0
+#define PWR_MODE_SUSPEND	1
+
+#define X_AXIS_MAX		3830
+#define X_AXIS_MIN		150
+#define Y_AXIS_MAX		3830
+#define Y_AXIS_MIN		190
+#define PRESSURE_MIN		0
+#define PRESSURE_MAX		15000
+
+struct ts_event {
+	short pressure;
+	short x;
+	short y;
+};
+
+struct corgi_ts {
+	char phys[32];
+	struct input_dev input;
+	struct timer_list timer;
+	struct ts_event tc;
+	int pendown;
+	int power_mode;
+};
+
+#define STATUS_HSYNC		(GPLR(CORGI_GPIO_HSYNC) & GPIO_bit(CORGI_GPIO_HSYNC))
+
+#define SyncHS()	while((STATUS_HSYNC) == 0); while((STATUS_HSYNC) != 0);
+#define CCNT(a)		asm volatile ("mrc p14, 0, %0, C1, C0, 0" : "=r"(a))
+#define CCNT_ON()	{int pmnc = 1; asm volatile ("mcr p14, 0, %0, C0, C0, 0" : : "r"(pmnc));}
+#define CCNT_OFF()	{int pmnc = 0; asm volatile ("mcr p14, 0, %0, C0, C0, 0" : : "r"(pmnc));}
+
+#define WAIT_HS_400_VGA		7013U	// 17.615us
+#define WAIT_HS_400_QVGA	16622U	// 41.750us
+
+
+/* ADS7846 Touch Screen Controller bit definitions */
+#define ADSCTRL_PD0		(1u << 0)	/* PD0 */
+#define ADSCTRL_PD1		(1u << 1)	/* PD1 */
+#define ADSCTRL_DFR		(1u << 2)	/* SER/DFR */
+#define ADSCTRL_MOD		(1u << 3)	/* Mode */
+#define ADSCTRL_ADR_SH	4	/* Address setting */
+#define ADSCTRL_STS		(1u << 7)	/* Start Bit */
+
+/* External Functions */
+extern int w100fb_get_xres(void);
+extern int w100fb_get_blanking(void);
+extern int w100fb_get_fastsysclk(void);
+extern unsigned int get_clk_frequency_khz(int info);
+
+static unsigned long calc_waittime(void)
+{
+	int w100fb_xres = w100fb_get_xres();
+	unsigned int waittime = 0;
+
+	if (w100fb_xres == 480 || w100fb_xres == 640) {
+		waittime = WAIT_HS_400_VGA * get_clk_frequency_khz(0) / 398131U;
+
+		if (w100fb_get_fastsysclk() == 100)
+			waittime = waittime * 75 / 100;
+
+		if (w100fb_xres == 640)
+			waittime *= 3;
+
+		return waittime;
+	}
+
+	return WAIT_HS_400_QVGA * get_clk_frequency_khz(0) / 398131U;
+}
+
+static int sync_receive_data_send_cmd(int doRecive, int doSend, unsigned int address, unsigned long wait_time)
+{
+	int pos = 0;
+	unsigned long timer1 = 0, timer2;
+	int dosleep;
+
+	dosleep = !w100fb_get_blanking();
+
+	if (dosleep && doSend) {
+		CCNT_ON();
+		/* polling HSync */
+		SyncHS();
+		/* get CCNT */
+		CCNT(timer1);
+	}
+
+	if (doRecive)
+		pos = corgi_ssp_ads7846_get();
+
+	if (doSend) {
+		int cmd = ADSCTRL_PD0 | ADSCTRL_PD1 | (address << ADSCTRL_ADR_SH) | ADSCTRL_STS;
+		/* dummy command */
+		corgi_ssp_ads7846_put(cmd);
+		corgi_ssp_ads7846_get();
+
+		if (dosleep) {
+			/* Wait after HSync */
+			CCNT(timer2);
+			if (timer2-timer1 > wait_time) {
+				/* timeout */
+				SyncHS();
+				/* get OSCR */
+				CCNT(timer1);
+				/* Wait after HSync */
+				CCNT(timer2);
+			}
+			while (timer2 - timer1 < wait_time)
+				CCNT(timer2);
+		}
+		corgi_ssp_ads7846_put(cmd);
+		if (dosleep)
+			CCNT_OFF();
+	}
+	return pos;
+}
+
+static int read_xydata(struct corgi_ts *corgi_ts)
+{
+	unsigned int x, y, z1, z2;
+	unsigned long flags, wait_time;
+
+	/* critical section */
+	local_irq_save(flags);
+	corgi_ssp_ads7846_lock();
+	wait_time=calc_waittime();
+
+	/* Y-axis */
+	sync_receive_data_send_cmd(0, 1, 1u, wait_time);
+
+	/* Y-axis */
+	sync_receive_data_send_cmd(1, 1, 1u, wait_time);
+
+	/* X-axis */
+	y = sync_receive_data_send_cmd(1, 1, 5u, wait_time);
+
+	/* Z1 */
+	x = sync_receive_data_send_cmd(1, 1, 3u, wait_time);
+
+	/* Z2 */
+	z1 = sync_receive_data_send_cmd(1, 1, 4u, wait_time);
+	z2 = sync_receive_data_send_cmd(1, 0, 4u, wait_time);
+
+	/* Power-Down Enable */
+	corgi_ssp_ads7846_put((1u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
+	corgi_ssp_ads7846_get();
+
+	corgi_ssp_ads7846_unlock();
+	local_irq_restore(flags);
+
+	if (x== 0 || y == 0 || z1 == 0 || (x * (z2 - z1) / z1) >= 15000) {
+		corgi_ts->tc.pressure = 0;
+		return 0;
+	}
+
+	corgi_ts->tc.x = x;
+	corgi_ts->tc.y = y;
+	corgi_ts->tc.pressure = (x * (z2 - z1)) / z1;
+	return 1;
+}
+
+static void new_data(struct corgi_ts *corgi_ts, struct pt_regs *regs)
+{
+	if (corgi_ts->power_mode != PWR_MODE_ACTIVE)
+		return;
+
+	if (!corgi_ts->tc.pressure && corgi_ts->pendown == 0)
+		return;
+
+	if (regs)
+		input_regs(&corgi_ts->input, regs);
+
+	input_report_abs(&corgi_ts->input, ABS_X, corgi_ts->tc.x);
+	input_report_abs(&corgi_ts->input, ABS_Y, corgi_ts->tc.y);
+	input_report_abs(&corgi_ts->input, ABS_PRESSURE, corgi_ts->tc.pressure);
+	input_report_key(&corgi_ts->input, BTN_TOUCH, (corgi_ts->pendown != 0));
+	input_sync(&corgi_ts->input);
+}
+
+static void ts_interrupt_main(struct corgi_ts *corgi_ts, int isTimer, struct pt_regs *regs)
+{
+	if ((GPLR(CORGI_GPIO_TP_INT) & GPIO_bit(CORGI_GPIO_TP_INT)) == 0) {
+		/* Disable Interrupt */
+		set_irq_type(CORGI_IRQ_GPIO_TP_INT, IRQT_NOEDGE);
+		if (read_xydata(corgi_ts)) {
+			corgi_ts->pendown = 1;
+			new_data(corgi_ts, regs);
+		}
+		mod_timer(&corgi_ts->timer, jiffies + HZ / 100);
+	} else {
+		if (corgi_ts->pendown == 1 || corgi_ts->pendown == 2) {
+			mod_timer(&corgi_ts->timer, jiffies + HZ / 100);
+			corgi_ts->pendown++;
+			return;
+		}
+
+		if (corgi_ts->pendown) {
+			corgi_ts->tc.pressure = 0;
+			new_data(corgi_ts, regs);
+		}
+
+		/* Enable Falling Edge */
+		set_irq_type(CORGI_IRQ_GPIO_TP_INT, IRQT_FALLING);
+		corgi_ts->pendown = 0;
+	}
+}
+
+static void corgi_ts_timer(unsigned long data)
+{
+	struct corgi_ts *corgits_data = (struct corgi_ts *) data;
+	ts_interrupt_main(corgits_data, 1, NULL);
+}
+
+static irqreturn_t ts_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct corgi_ts *corgits_data = dev_id;
+	ts_interrupt_main(corgits_data, 0, regs);
+	return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_PM
+static int corgits_suspend(struct device *dev, uint32_t state, uint32_t level)
+{
+	if (level == SUSPEND_POWER_DOWN) {
+		struct corgi_ts *corgi_ts = dev_get_drvdata(dev);
+
+		if (corgi_ts->pendown) {
+			del_timer_sync(&corgi_ts->timer);
+			corgi_ts->tc.pressure = 0;
+			new_data(corgi_ts, NULL);
+			corgi_ts->pendown = 0;
+		}
+		corgi_ts->power_mode = PWR_MODE_SUSPEND;
+
+		corgi_ssp_ads7846_putget((1u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
+	}
+	return 0;
+}
+
+static int corgits_resume(struct device *dev, uint32_t level)
+{
+	if (level == RESUME_POWER_ON) {
+		struct corgi_ts *corgi_ts = dev_get_drvdata(dev);
+
+		corgi_ssp_ads7846_putget((4u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
+		/* Enable Falling Edge */
+		set_irq_type(CORGI_IRQ_GPIO_TP_INT, IRQT_FALLING);
+		corgi_ts->power_mode = PWR_MODE_ACTIVE;
+	}
+	return 0;
+}
+#else
+#define corgits_suspend		NULL
+#define corgits_resume		NULL
+#endif
+
+static int __init corgits_probe(struct device *dev)
+{
+	struct corgi_ts *corgi_ts;
+
+	if (!(corgi_ts = kmalloc(sizeof(struct corgi_ts), GFP_KERNEL)))
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, corgi_ts);
+
+	memset(corgi_ts, 0, sizeof(struct corgi_ts));
+
+	init_input_dev(&corgi_ts->input);
+	corgi_ts->input.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+	corgi_ts->input.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+	input_set_abs_params(&corgi_ts->input, ABS_X, X_AXIS_MIN, X_AXIS_MAX, 0, 0);
+	input_set_abs_params(&corgi_ts->input, ABS_Y, Y_AXIS_MIN, Y_AXIS_MAX, 0, 0);
+	input_set_abs_params(&corgi_ts->input, ABS_PRESSURE, PRESSURE_MIN, PRESSURE_MAX, 0, 0);
+
+	strcpy(corgi_ts->phys, "corgits/input0");
+
+	corgi_ts->input.private = corgi_ts;
+	corgi_ts->input.name = "Corgi Touchscreen";
+	corgi_ts->input.dev = dev;
+	corgi_ts->input.phys = corgi_ts->phys;
+	corgi_ts->input.id.bustype = BUS_HOST;
+	corgi_ts->input.id.vendor = 0x0001;
+	corgi_ts->input.id.product = 0x0002;
+	corgi_ts->input.id.version = 0x0100;
+
+	pxa_gpio_mode(CORGI_GPIO_TP_INT | GPIO_IN);
+	pxa_gpio_mode(CORGI_GPIO_HSYNC | GPIO_IN);
+
+	/* Initiaize ADS7846 Difference Reference mode */
+	corgi_ssp_ads7846_putget((1u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
+	mdelay(5);
+	corgi_ssp_ads7846_putget((3u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
+	mdelay(5);
+	corgi_ssp_ads7846_putget((4u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
+	mdelay(5);
+	corgi_ssp_ads7846_putget((5u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
+	mdelay(5);
+
+	init_timer(&corgi_ts->timer);
+	corgi_ts->timer.data = (unsigned long) corgi_ts;
+	corgi_ts->timer.function = corgi_ts_timer;
+
+	input_register_device(&corgi_ts->input);
+	corgi_ts->power_mode = PWR_MODE_ACTIVE;
+
+	if (request_irq(CORGI_IRQ_GPIO_TP_INT, ts_interrupt, SA_INTERRUPT, "ts", corgi_ts)) {
+		input_unregister_device(&corgi_ts->input);
+		kfree(corgi_ts);
+		return -EBUSY;
+	}
+
+	/* Enable Falling Edge */
+	set_irq_type(CORGI_IRQ_GPIO_TP_INT, IRQT_FALLING);
+
+	printk(KERN_INFO "input: Corgi Touchscreen Registered\n");
+
+	return 0;
+}
+
+static int corgits_remove(struct device *dev)
+{
+	struct corgi_ts *corgi_ts = dev_get_drvdata(dev);
+
+	free_irq(CORGI_IRQ_GPIO_TP_INT, NULL);
+	del_timer_sync(&corgi_ts->timer);
+	input_unregister_device(&corgi_ts->input);
+	kfree(corgi_ts);
+	return 0;
+}
+
+static struct device_driver corgits_driver = {
+	.name		= "corgi-ts",
+	.bus		= &platform_bus_type,
+	.probe		= corgits_probe,
+	.remove		= corgits_remove,
+	.suspend	= corgits_suspend,
+	.resume		= corgits_resume,
+};
+
+static int __devinit corgits_init(void)
+{
+	return driver_register(&corgits_driver);
+}
+
+static void __exit corgits_exit(void)
+{
+	driver_unregister(&corgits_driver);
+}
+
+module_init(corgits_init);
+module_exit(corgits_exit);
+
+MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
+MODULE_DESCRIPTION("Corgi TouchScreen Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/elo.c b/drivers/input/touchscreen/elo.c
new file mode 100644
index 0000000..546ce59
--- /dev/null
+++ b/drivers/input/touchscreen/elo.c
@@ -0,0 +1,315 @@
+/*
+ * Elo serial touchscreen driver
+ *
+ * Copyright (c) 2004 Vojtech Pavlik
+ */
+
+/*
+ * 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.
+ */
+
+/*
+ * This driver can handle serial Elo touchscreens using either the Elo standard
+ * 'E271-2210' 10-byte protocol, Elo legacy 'E281A-4002' 6-byte protocol, Elo
+ * legacy 'E271-140' 4-byte protocol and Elo legacy 'E261-280' 3-byte protocol.
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/init.h>
+
+#define DRIVER_DESC	"Elo serial touchscreen driver"
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+/*
+ * Definitions & global arrays.
+ */
+
+#define	ELO_MAX_LENGTH	10
+
+static char *elo_name = "Elo Serial TouchScreen";
+
+/*
+ * Per-touchscreen data.
+ */
+
+struct elo {
+	struct input_dev dev;
+	struct serio *serio;
+	int id;
+	int idx;
+	unsigned char csum;
+	unsigned char data[ELO_MAX_LENGTH];
+	char phys[32];
+};
+
+static void elo_process_data_10(struct elo* elo, unsigned char data, struct pt_regs *regs)
+{
+	struct input_dev *dev = &elo->dev;
+
+	elo->csum += elo->data[elo->idx] = data;
+
+	switch (elo->idx++) {
+
+		case 0:
+			if (data != 'U') {
+				elo->idx = 0;
+				elo->csum = 0;
+			}
+			break;
+
+		case 1:
+			if (data != 'T') {
+				elo->idx = 0;
+				elo->csum = 0;
+			}
+			break;
+
+		case 9:
+			if (elo->csum) {
+				input_regs(dev, regs);
+				input_report_abs(dev, ABS_X, (elo->data[4] << 8) | elo->data[3]);
+				input_report_abs(dev, ABS_Y, (elo->data[6] << 8) | elo->data[5]);
+				input_report_abs(dev, ABS_PRESSURE, (elo->data[8] << 8) | elo->data[7]);
+				input_report_key(dev, BTN_TOUCH, elo->data[2] & 3);
+				input_sync(dev);
+			}
+			elo->idx = 0;
+			elo->csum = 0;
+			break;
+	}
+}
+
+static void elo_process_data_6(struct elo* elo, unsigned char data, struct pt_regs *regs)
+{
+	struct input_dev *dev = &elo->dev;
+
+	elo->data[elo->idx] = data;
+
+	switch (elo->idx++) {
+
+		case 0: if ((data & 0xc0) != 0xc0) elo->idx = 0; break;
+		case 1: if ((data & 0xc0) != 0x80) elo->idx = 0; break;
+		case 2: if ((data & 0xc0) != 0x40) elo->idx = 0; break;
+
+		case 3:
+			if (data & 0xc0) {
+				elo->idx = 0;
+				break;
+			}
+
+			input_regs(dev, regs);
+			input_report_abs(dev, ABS_X, ((elo->data[0] & 0x3f) << 6) | (elo->data[1] & 0x3f));
+			input_report_abs(dev, ABS_Y, ((elo->data[2] & 0x3f) << 6) | (elo->data[3] & 0x3f));
+
+			if (elo->id == 2) {
+				input_report_key(dev, BTN_TOUCH, 1);
+				input_sync(dev);
+				elo->idx = 0;
+			}
+
+			break;
+
+		case 4:
+			if (data) {
+				input_sync(dev);
+				elo->idx = 0;
+			}
+			break;
+
+		case 5:
+			if ((data & 0xf0) == 0) {
+				input_report_abs(dev, ABS_PRESSURE, elo->data[5]);
+				input_report_key(dev, BTN_TOUCH, elo->data[5]);
+			}
+			input_sync(dev);
+			elo->idx = 0;
+			break;
+	}
+}
+
+static void elo_process_data_3(struct elo* elo, unsigned char data, struct pt_regs *regs)
+{
+	struct input_dev *dev = &elo->dev;
+
+	elo->data[elo->idx] = data;
+
+	switch (elo->idx++) {
+
+		case 0:
+			if ((data & 0x7f) != 0x01)
+				elo->idx = 0;
+			break;
+		case 2:
+			input_regs(dev, regs);
+			input_report_key(dev, BTN_TOUCH, !(elo->data[1] & 0x80));
+			input_report_abs(dev, ABS_X, elo->data[1]);
+			input_report_abs(dev, ABS_Y, elo->data[2]);
+			input_sync(dev);
+			elo->idx = 0;
+			break;
+	}
+}
+
+static irqreturn_t elo_interrupt(struct serio *serio,
+		unsigned char data, unsigned int flags, struct pt_regs *regs)
+{
+	struct elo* elo = serio_get_drvdata(serio);
+
+	switch(elo->id) {
+		case 0:
+			elo_process_data_10(elo, data, regs);
+			break;
+
+		case 1:
+		case 2:
+			elo_process_data_6(elo, data, regs);
+			break;
+
+		case 3:
+			elo_process_data_3(elo, data, regs);
+			break;
+	}
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * elo_disconnect() is the opposite of elo_connect()
+ */
+
+static void elo_disconnect(struct serio *serio)
+{
+	struct elo* elo = serio_get_drvdata(serio);
+
+	input_unregister_device(&elo->dev);
+	serio_close(serio);
+	serio_set_drvdata(serio, NULL);
+	kfree(elo);
+}
+
+/*
+ * elo_connect() is the routine that is called when someone adds a
+ * new serio device that supports Gunze protocol and registers it as
+ * an input device.
+ */
+
+static int elo_connect(struct serio *serio, struct serio_driver *drv)
+{
+	struct elo *elo;
+	int err;
+
+	if (!(elo = kmalloc(sizeof(struct elo), GFP_KERNEL)))
+		return -ENOMEM;
+
+	memset(elo, 0, sizeof(struct elo));
+
+	init_input_dev(&elo->dev);
+	elo->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+	elo->dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+
+	elo->id = serio->id.id;
+
+	switch (elo->id) {
+
+		case 0: /* 10-byte protocol */
+			input_set_abs_params(&elo->dev, ABS_X, 96, 4000, 0, 0);
+			input_set_abs_params(&elo->dev, ABS_Y, 96, 4000, 0, 0);
+			input_set_abs_params(&elo->dev, ABS_PRESSURE, 0, 255, 0, 0);
+			break;
+		
+		case 1: /* 6-byte protocol */
+			input_set_abs_params(&elo->dev, ABS_PRESSURE, 0, 15, 0, 0);
+
+		case 2: /* 4-byte protocol */
+			input_set_abs_params(&elo->dev, ABS_X, 96, 4000, 0, 0);
+			input_set_abs_params(&elo->dev, ABS_Y, 96, 4000, 0, 0);
+			break;
+
+		case 3: /* 3-byte protocol */
+			input_set_abs_params(&elo->dev, ABS_X, 0, 255, 0, 0);
+			input_set_abs_params(&elo->dev, ABS_Y, 0, 255, 0, 0);
+			break;
+	}
+
+	elo->serio = serio;
+
+	sprintf(elo->phys, "%s/input0", serio->phys);
+
+	elo->dev.private = elo;
+	elo->dev.name = elo_name;
+	elo->dev.phys = elo->phys;
+	elo->dev.id.bustype = BUS_RS232;
+	elo->dev.id.vendor = SERIO_ELO;
+	elo->dev.id.product = elo->id;
+	elo->dev.id.version = 0x0100;
+
+	serio_set_drvdata(serio, elo);
+
+	err = serio_open(serio, drv);
+	if (err) {
+		serio_set_drvdata(serio, NULL);
+		kfree(elo);
+		return err;
+	}
+
+	input_register_device(&elo->dev);
+
+	printk(KERN_INFO "input: %s on %s\n", elo_name, serio->phys);
+
+	return 0;
+}
+
+/*
+ * The serio driver structure.
+ */
+
+static struct serio_device_id elo_serio_ids[] = {
+	{
+		.type	= SERIO_RS232,
+		.proto	= SERIO_ELO,
+		.id	= SERIO_ANY,
+		.extra	= SERIO_ANY,
+	},
+	{ 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, elo_serio_ids);
+
+static struct serio_driver elo_drv = {
+	.driver		= {
+		.name	= "elo",
+	},
+	.description	= DRIVER_DESC,
+	.id_table	= elo_serio_ids,
+	.interrupt	= elo_interrupt,
+	.connect	= elo_connect,
+	.disconnect	= elo_disconnect,
+};
+
+/*
+ * The functions for inserting/removing us as a module.
+ */
+
+static int __init elo_init(void)
+{
+	serio_register_driver(&elo_drv);
+	return 0;
+}
+
+static void __exit elo_exit(void)
+{
+	serio_unregister_driver(&elo_drv);
+}
+
+module_init(elo_init);
+module_exit(elo_exit);
diff --git a/drivers/input/touchscreen/gunze.c b/drivers/input/touchscreen/gunze.c
new file mode 100644
index 0000000..c9d0a15
--- /dev/null
+++ b/drivers/input/touchscreen/gunze.c
@@ -0,0 +1,205 @@
+/*
+ * $Id: gunze.c,v 1.12 2001/09/25 10:12:07 vojtech Exp $
+ *
+ *  Copyright (c) 2000-2001 Vojtech Pavlik
+ */
+
+/*
+ * Gunze AHL-51S touchscreen driver for Linux
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
+ * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/init.h>
+
+#define DRIVER_DESC	"Gunze AHL-51S touchscreen driver"
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+/*
+ * Definitions & global arrays.
+ */
+
+#define	GUNZE_MAX_LENGTH	10
+
+static char *gunze_name = "Gunze AHL-51S TouchScreen";
+
+/*
+ * Per-touchscreen data.
+ */
+
+struct gunze {
+	struct input_dev dev;
+	struct serio *serio;
+	int idx;
+	unsigned char data[GUNZE_MAX_LENGTH];
+	char phys[32];
+};
+
+static void gunze_process_packet(struct gunze* gunze, struct pt_regs *regs)
+{
+	struct input_dev *dev = &gunze->dev;
+
+	if (gunze->idx != GUNZE_MAX_LENGTH || gunze->data[5] != ',' ||
+		(gunze->data[0] != 'T' && gunze->data[0] != 'R')) {
+		gunze->data[10] = 0;
+		printk(KERN_WARNING "gunze.c: bad packet: >%s<\n", gunze->data);
+		return;
+	}
+
+	input_regs(dev, regs);
+	input_report_abs(dev, ABS_X, simple_strtoul(gunze->data + 1, NULL, 10));
+	input_report_abs(dev, ABS_Y, 1024 - simple_strtoul(gunze->data + 6, NULL, 10));
+	input_report_key(dev, BTN_TOUCH, gunze->data[0] == 'T');
+	input_sync(dev);
+}
+
+static irqreturn_t gunze_interrupt(struct serio *serio,
+		unsigned char data, unsigned int flags, struct pt_regs *regs)
+{
+	struct gunze* gunze = serio_get_drvdata(serio);
+
+	if (data == '\r') {
+		gunze_process_packet(gunze, regs);
+		gunze->idx = 0;
+	} else {
+		if (gunze->idx < GUNZE_MAX_LENGTH)
+			gunze->data[gunze->idx++] = data;
+	}
+	return IRQ_HANDLED;
+}
+
+/*
+ * gunze_disconnect() is the opposite of gunze_connect()
+ */
+
+static void gunze_disconnect(struct serio *serio)
+{
+	struct gunze* gunze = serio_get_drvdata(serio);
+
+	input_unregister_device(&gunze->dev);
+	serio_close(serio);
+	serio_set_drvdata(serio, NULL);
+	kfree(gunze);
+}
+
+/*
+ * gunze_connect() is the routine that is called when someone adds a
+ * new serio device that supports Gunze protocol and registers it as
+ * an input device.
+ */
+
+static int gunze_connect(struct serio *serio, struct serio_driver *drv)
+{
+	struct gunze *gunze;
+	int err;
+
+	if (!(gunze = kmalloc(sizeof(struct gunze), GFP_KERNEL)))
+		return -ENOMEM;
+
+	memset(gunze, 0, sizeof(struct gunze));
+
+	init_input_dev(&gunze->dev);
+	gunze->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+	gunze->dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+	input_set_abs_params(&gunze->dev, ABS_X, 24, 1000, 0, 0);
+	input_set_abs_params(&gunze->dev, ABS_Y, 24, 1000, 0, 0);
+
+	gunze->serio = serio;
+
+	sprintf(gunze->phys, "%s/input0", serio->phys);
+
+	gunze->dev.private = gunze;
+	gunze->dev.name = gunze_name;
+	gunze->dev.phys = gunze->phys;
+	gunze->dev.id.bustype = BUS_RS232;
+	gunze->dev.id.vendor = SERIO_GUNZE;
+	gunze->dev.id.product = 0x0051;
+	gunze->dev.id.version = 0x0100;
+
+	serio_set_drvdata(serio, gunze);
+
+	err = serio_open(serio, drv);
+	if (err) {
+		serio_set_drvdata(serio, NULL);
+		kfree(gunze);
+		return err;
+	}
+
+	input_register_device(&gunze->dev);
+
+	printk(KERN_INFO "input: %s on %s\n", gunze_name, serio->phys);
+
+	return 0;
+}
+
+/*
+ * The serio driver structure.
+ */
+
+static struct serio_device_id gunze_serio_ids[] = {
+	{
+		.type	= SERIO_RS232,
+		.proto	= SERIO_GUNZE,
+		.id	= SERIO_ANY,
+		.extra	= SERIO_ANY,
+	},
+	{ 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, gunze_serio_ids);
+
+static struct serio_driver gunze_drv = {
+	.driver		= {
+		.name	= "gunze",
+	},
+	.description	= DRIVER_DESC,
+	.id_table	= gunze_serio_ids,
+	.interrupt	= gunze_interrupt,
+	.connect	= gunze_connect,
+	.disconnect	= gunze_disconnect,
+};
+
+/*
+ * The functions for inserting/removing us as a module.
+ */
+
+static int __init gunze_init(void)
+{
+	serio_register_driver(&gunze_drv);
+	return 0;
+}
+
+static void __exit gunze_exit(void)
+{
+	serio_unregister_driver(&gunze_drv);
+}
+
+module_init(gunze_init);
+module_exit(gunze_exit);
diff --git a/drivers/input/touchscreen/h3600_ts_input.c b/drivers/input/touchscreen/h3600_ts_input.c
new file mode 100644
index 0000000..acb9137
--- /dev/null
+++ b/drivers/input/touchscreen/h3600_ts_input.c
@@ -0,0 +1,528 @@
+/*
+ * $Id: h3600_ts_input.c,v 1.4 2002/01/23 06:39:37 jsimmons Exp $
+ *
+ *  Copyright (c) 2001 "Crazy" James Simmons jsimmons@transvirtual.com
+ *
+ *  Sponsored by Transvirtual Technology.
+ *
+ *  Derived from the code in h3600_ts.[ch] by Charles Flynn
+ */
+
+/*
+ * Driver for the h3600 Touch Screen and other Atmel controlled devices.
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Should you need to contact me, the author, you can do so by
+ * e-mail - mail your message to <jsimmons@transvirtual.com>.
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+
+/* SA1100 serial defines */
+#include <asm/arch/hardware.h>
+#include <asm/arch/irqs.h>
+
+#define DRIVER_DESC	"H3600 touchscreen driver"
+
+MODULE_AUTHOR("James Simmons <jsimmons@transvirtual.com>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+/*
+ * Definitions & global arrays.
+ */
+
+/* The start and end of frame characters SOF and EOF */
+#define CHAR_SOF                0x02
+#define CHAR_EOF                0x03
+#define FRAME_OVERHEAD          3       /* CHAR_SOF,CHAR_EOF,LENGTH = 3 */
+
+/*
+        Atmel events and response IDs contained in frame.
+        Programmer has no control over these numbers.
+        TODO there are holes - specifically  1,7,0x0a
+*/
+#define VERSION_ID              0       /* Get Version (request/respose) */
+#define KEYBD_ID                2       /* Keyboard (event) */
+#define TOUCHS_ID               3       /* Touch Screen (event)*/
+#define EEPROM_READ_ID          4       /* (request/response) */
+#define EEPROM_WRITE_ID         5       /* (request/response) */
+#define THERMAL_ID              6       /* (request/response) */
+#define NOTIFY_LED_ID           8       /* (request/response) */
+#define BATTERY_ID              9       /* (request/response) */
+#define SPI_READ_ID             0x0b    /* ( request/response) */
+#define SPI_WRITE_ID            0x0c    /* ( request/response) */
+#define FLITE_ID                0x0d    /* backlight ( request/response) */
+#define STX_ID                  0xa1    /* extension pack status (req/resp) */
+
+#define MAX_ID                  14
+
+#define H3600_MAX_LENGTH 16
+#define H3600_KEY 0xf
+
+#define H3600_SCANCODE_RECORD	1	 /* 1 -> record button */
+#define H3600_SCANCODE_CALENDAR 2	 /* 2 -> calendar */
+#define H3600_SCANCODE_CONTACTS 3	 /* 3 -> contact */
+#define H3600_SCANCODE_Q	4	 /* 4 -> Q button */
+#define	H3600_SCANCODE_START	5	 /* 5 -> start menu */
+#define	H3600_SCANCODE_UP	6	 /* 6 -> up */
+#define H3600_SCANCODE_RIGHT	7 	 /* 7 -> right */
+#define H3600_SCANCODE_LEFT 	8	 /* 8 -> left */
+#define H3600_SCANCODE_DOWN 	9	 /* 9 -> down */
+
+static char *h3600_name = "H3600 TouchScreen";
+
+/*
+ * Per-touchscreen data.
+ */
+struct h3600_dev {
+	struct input_dev dev;
+	struct pm_dev *pm_dev;
+	struct serio *serio;
+	struct pm_dev *pm_dev;
+	unsigned char event;	/* event ID from packet */
+	unsigned char chksum;
+	unsigned char len;
+	unsigned char idx;
+	unsigned char buf[H3600_MAX_LENGTH];
+	char phys[32];
+};
+
+static irqreturn_t action_button_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+        int down = (GPLR & GPIO_BITSY_ACTION_BUTTON) ? 0 : 1;
+	struct input_dev *dev = (struct input_dev *) dev_id;
+
+	input_regs(dev, regs);
+	input_report_key(dev, KEY_ENTER, down);
+	input_sync(dev);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t npower_button_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+        int down = (GPLR & GPIO_BITSY_NPOWER_BUTTON) ? 0 : 1;
+	struct input_dev *dev = (struct input_dev *) dev_id;
+
+	/*
+	 * This interrupt is only called when we release the key. So we have
+	 * to fake a key press.
+	 */
+	input_regs(dev, regs);
+	input_report_key(dev, KEY_SUSPEND, 1);
+	input_report_key(dev, KEY_SUSPEND, down);
+	input_sync(dev);
+
+	return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_PM
+
+static int flite_brightness = 25;
+
+enum flite_pwr {
+        FLITE_PWR_OFF = 0,
+        FLITE_PWR_ON = 1
+};
+
+/*
+ * h3600_flite_power: enables or disables power to frontlight, using last bright */
+unsigned int h3600_flite_power(struct input_dev *dev, enum flite_pwr pwr)
+{
+	unsigned char brightness = (pwr == FLITE_PWR_OFF) ? 0 : flite_brightness;
+	struct h3600_dev *ts = dev->private;
+
+	/* Must be in this order */
+       	ts->serio->write(ts->serio, 1);
+	ts->serio->write(ts->serio, pwr);
+      	ts->serio->write(ts->serio, brightness);
+	return 0;
+}
+
+static int suspended = 0;
+static int h3600ts_pm_callback(struct pm_dev *pm_dev, pm_request_t req,
+				void *data)
+{
+	struct input_dev *dev = (struct input_dev *) data;
+
+        switch (req) {
+        case PM_SUSPEND: /* enter D1-D3 */
+                suspended = 1;
+                h3600_flite_power(dev, FLITE_PWR_OFF);
+                break;
+        case PM_BLANK:
+                if (!suspended)
+                        h3600_flite_power(dev, FLITE_PWR_OFF);
+                break;
+        case PM_RESUME:  /* enter D0 */
+                /* same as unblank */
+        case PM_UNBLANK:
+                if (suspended) {
+                        //initSerial();
+                        suspended = 0;
+                }
+                h3600_flite_power(dev, FLITE_PWR_ON);
+                break;
+        }
+        return 0;
+}
+#endif
+
+/*
+ * This function translates the native event packets to linux input event
+ * packets. Some packets coming from serial are not touchscreen related. In
+ * this case we send them off to be processed elsewhere.
+ */
+static void h3600ts_process_packet(struct h3600_dev *ts, struct pt_regs *regs)
+{
+        struct input_dev *dev = &ts->dev;
+	static int touched = 0;
+	int key, down = 0;
+
+	input_regs(dev, regs);
+
+        switch (ts->event) {
+                /*
+                   Buttons - returned as a single byte
+                        7 6 5 4 3 2 1 0
+                        S x x x N N N N
+
+                   S       switch state ( 0=pressed 1=released)
+                   x       Unused.
+                   NNNN    switch number 0-15
+
+                Note: This is true for non interrupt generated key events.
+                */
+                case KEYBD_ID:
+			down = (ts->buf[0] & 0x80) ? 0 : 1;
+
+			switch (ts->buf[0] & 0x7f) {
+				case H3600_SCANCODE_RECORD:
+					key = KEY_RECORD;
+					break;
+				case H3600_SCANCODE_CALENDAR:
+					key = KEY_PROG1;
+                                        break;
+				case H3600_SCANCODE_CONTACTS:
+					key = KEY_PROG2;
+                                        break;
+				case H3600_SCANCODE_Q:
+					key = KEY_Q;
+                                        break;
+				case H3600_SCANCODE_START:
+					key = KEY_PROG3;
+                                        break;
+				case H3600_SCANCODE_UP:
+					key = KEY_UP;
+                                        break;
+				case H3600_SCANCODE_RIGHT:
+					key = KEY_RIGHT;
+                                        break;
+				case H3600_SCANCODE_LEFT:
+					key = KEY_LEFT;
+                                        break;
+				case H3600_SCANCODE_DOWN:
+					key = KEY_DOWN;
+                                        break;
+				default:
+					key = 0;
+			}
+                        if (key)
+                        	input_report_key(dev, key, down);
+                        break;
+                /*
+                 * Native touchscreen event data is formatted as shown below:-
+                 *
+                 *      +-------+-------+-------+-------+
+                 *      | Xmsb  | Xlsb  | Ymsb  | Ylsb  |
+                 *      +-------+-------+-------+-------+
+                 *       byte 0    1       2       3
+                 */
+                case TOUCHS_ID:
+			if (!touched) {
+				input_report_key(dev, BTN_TOUCH, 1);
+				touched = 1;
+			}
+
+			if (ts->len) {
+				unsigned short x, y;
+
+				x = ts->buf[0]; x <<= 8; x += ts->buf[1];
+                                y = ts->buf[2]; y <<= 8; y += ts->buf[3];
+
+                       		input_report_abs(dev, ABS_X, x);
+                       		input_report_abs(dev, ABS_Y, y);
+			} else {
+		               	input_report_key(dev, BTN_TOUCH, 0);
+				touched = 0;
+			}
+                        break;
+		default:
+			/* Send a non input event elsewhere */
+			break;
+        }
+
+	input_sync(dev);
+}
+
+/*
+ * h3600ts_event() handles events from the input module.
+ */
+static int h3600ts_event(struct input_dev *dev, unsigned int type,
+		 	 unsigned int code, int value)
+{
+	struct h3600_dev *ts = dev->private;
+
+	switch (type) {
+		case EV_LED: {
+		//	ts->serio->write(ts->serio, SOME_CMD);
+			return 0;
+		}
+	}
+	return -1;
+}
+
+/*
+        Frame format
+  byte    1       2               3              len + 4
+        +-------+---------------+---------------+--=------------+
+        |SOF    |id     |len    | len bytes     | Chksum        |
+        +-------+---------------+---------------+--=------------+
+  bit   0     7  8    11 12   15 16
+
+        +-------+---------------+-------+
+        |SOF    |id     |0      |Chksum | - Note Chksum does not include SOF
+        +-------+---------------+-------+
+  bit   0     7  8    11 12   15 16
+
+*/
+
+static int state;
+
+/* decode States  */
+#define STATE_SOF       0       /* start of FRAME */
+#define STATE_ID        1       /* state where we decode the ID & len */
+#define STATE_DATA      2       /* state where we decode data */
+#define STATE_EOF       3       /* state where we decode checksum or EOF */
+
+static irqreturn_t h3600ts_interrupt(struct serio *serio, unsigned char data,
+                                     unsigned int flags, struct pt_regs *regs)
+{
+        struct h3600_dev *ts = serio_get_drvdata(serio);
+
+	/*
+         * We have a new frame coming in.
+         */
+	switch (state) {
+		case STATE_SOF:
+        		if (data == CHAR_SOF)
+                		state = STATE_ID;
+			break;
+        	case STATE_ID:
+			ts->event = (data & 0xf0) >> 4;
+			ts->len = (data & 0xf);
+			ts->idx = 0;
+			if (ts->event >= MAX_ID) {
+				state = STATE_SOF;
+                        	break;
+			}
+			ts->chksum = data;
+                	state = (ts->len > 0) ? STATE_DATA : STATE_EOF;
+			break;
+		case STATE_DATA:
+			ts->chksum += data;
+			ts->buf[ts->idx]= data;
+			if(++ts->idx == ts->len)
+                        	state = STATE_EOF;
+			break;
+		case STATE_EOF:
+                	state = STATE_SOF;
+                	if (data == CHAR_EOF || data == ts->chksum)
+				h3600ts_process_packet(ts, regs);
+                	break;
+        	default:
+                	printk("Error3\n");
+                	break;
+	}
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * h3600ts_connect() is the routine that is called when someone adds a
+ * new serio device that supports H3600 protocol and registers it as
+ * an input device.
+ */
+static int h3600ts_connect(struct serio *serio, struct serio_driver *drv)
+{
+	struct h3600_dev *ts;
+	int err;
+
+	if (!(ts = kmalloc(sizeof(struct h3600_dev), GFP_KERNEL)))
+		return -ENOMEM;
+
+	memset(ts, 0, sizeof(struct h3600_dev));
+
+	init_input_dev(&ts->dev);
+
+	/* Device specific stuff */
+        set_GPIO_IRQ_edge(GPIO_BITSY_ACTION_BUTTON, GPIO_BOTH_EDGES);
+        set_GPIO_IRQ_edge(GPIO_BITSY_NPOWER_BUTTON, GPIO_RISING_EDGE);
+
+        if (request_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, action_button_handler,
+			SA_SHIRQ | SA_INTERRUPT | SA_SAMPLE_RANDOM,
+			"h3600_action", &ts->dev)) {
+		printk(KERN_ERR "h3600ts.c: Could not allocate Action Button IRQ!\n");
+		kfree(ts);
+		return -EBUSY;
+	}
+
+        if (request_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, npower_button_handler,
+			SA_SHIRQ | SA_INTERRUPT | SA_SAMPLE_RANDOM,
+			"h3600_suspend", &ts->dev)) {
+		free_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, &ts->dev);
+		printk(KERN_ERR "h3600ts.c: Could not allocate Power Button IRQ!\n");
+		kfree(ts);
+		return -EBUSY;
+	}
+
+	/* Now we have things going we setup our input device */
+	ts->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_LED) | BIT(EV_PWR);
+	ts->dev.ledbit[0] = BIT(LED_SLEEP);
+	input_set_abs_params(&ts->dev, ABS_X, 60, 985, 0, 0);
+	input_set_abs_params(&ts->dev, ABS_Y, 35, 1024, 0, 0);
+
+	set_bit(KEY_RECORD, ts->dev.keybit);
+	set_bit(KEY_Q, ts->dev.keybit);
+	set_bit(KEY_PROG1, ts->dev.keybit);
+	set_bit(KEY_PROG2, ts->dev.keybit);
+	set_bit(KEY_PROG3, ts->dev.keybit);
+	set_bit(KEY_UP, ts->dev.keybit);
+	set_bit(KEY_RIGHT, ts->dev.keybit);
+	set_bit(KEY_LEFT, ts->dev.keybit);
+	set_bit(KEY_DOWN, ts->dev.keybit);
+	set_bit(KEY_ENTER, ts->dev.keybit);
+	ts->dev.keybit[LONG(BTN_TOUCH)] |= BIT(BTN_TOUCH);
+	ts->dev.keybit[LONG(KEY_SUSPEND)] |= BIT(KEY_SUSPEND);
+
+	ts->serio = serio;
+
+	sprintf(ts->phys, "%s/input0", serio->phys);
+
+       	ts->dev.event = h3600ts_event;
+	ts->dev.private = ts;
+	ts->dev.name = h3600_name;
+	ts->dev.phys = ts->phys;
+	ts->dev.id.bustype = BUS_RS232;
+	ts->dev.id.vendor = SERIO_H3600;
+	ts->dev.id.product = 0x0666;  /* FIXME !!! We can ask the hardware */
+	ts->dev.id.version = 0x0100;
+
+	serio_set_drvdata(serio, ts);
+
+	err = serio_open(serio, drv);
+	if (err) {
+        	free_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, ts);
+        	free_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, ts);
+		serio_set_drvdata(serio, NULL);
+		kfree(ts);
+		return err;
+	}
+
+	//h3600_flite_control(1, 25);     /* default brightness */
+#ifdef CONFIG_PM
+	ts->pm_dev = pm_register(PM_ILLUMINATION_DEV, PM_SYS_LIGHT,
+				h3600ts_pm_callback);
+	printk("registered pm callback\n");
+#endif
+	input_register_device(&ts->dev);
+
+	printk(KERN_INFO "input: %s on %s\n", h3600_name, serio->phys);
+
+	return 0;
+}
+
+/*
+ * h3600ts_disconnect() is the opposite of h3600ts_connect()
+ */
+
+static void h3600ts_disconnect(struct serio *serio)
+{
+	struct h3600_dev *ts = serio_get_drvdata(serio);
+
+	free_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, &ts->dev);
+	free_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, &ts->dev);
+	input_unregister_device(&ts->dev);
+	serio_close(serio);
+	serio_set_drvdata(serio, NULL);
+	kfree(ts);
+}
+
+/*
+ * The serio driver structure.
+ */
+
+static struct serio_device_id h3600ts_serio_ids[] = {
+	{
+		.type	= SERIO_RS232,
+		.proto	= SERIO_H3600,
+		.id	= SERIO_ANY,
+		.extra	= SERIO_ANY,
+	},
+	{ 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, h3600ts_serio_ids);
+
+static struct serio_driver h3600ts_drv = {
+	.driver		= {
+		.name	= "h3600ts",
+	},
+	.description	= DRIVER_DESC,
+	.id_table	= h3600ts_serio_ids,
+	.interrupt	= h3600ts_interrupt,
+	.connect	= h3600ts_connect,
+	.disconnect	= h3600ts_disconnect,
+};
+
+/*
+ * The functions for inserting/removing us as a module.
+ */
+
+static int __init h3600ts_init(void)
+{
+	serio_register_driver(&h3600ts_drv);
+	return 0;
+}
+
+static void __exit h3600ts_exit(void)
+{
+	serio_unregister_driver(&h3600ts_drv);
+}
+
+module_init(h3600ts_init);
+module_exit(h3600ts_exit);
diff --git a/drivers/input/touchscreen/hp680_ts_input.c b/drivers/input/touchscreen/hp680_ts_input.c
new file mode 100644
index 0000000..7e14044
--- /dev/null
+++ b/drivers/input/touchscreen/hp680_ts_input.c
@@ -0,0 +1,135 @@
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <linux/interrupt.h>
+#include <asm/io.h>
+#include <asm/delay.h>
+#include <asm/adc.h>
+#include <asm/hp6xx/hp6xx.h>
+
+#define MODNAME "hp680_ts_input"
+
+#define HP680_TS_ABS_X_MIN	40
+#define HP680_TS_ABS_X_MAX	950
+#define HP680_TS_ABS_Y_MIN	80
+#define HP680_TS_ABS_Y_MAX	910
+
+#define	SCPCR	0xa4000116
+#define	PHDR	0xa400012e
+#define SCPDR	0xa4000136
+
+static void do_softint(void *data);
+
+static struct input_dev hp680_ts_dev;
+static DECLARE_WORK(work, do_softint, 0);
+static char *hp680_ts_name = "HP Jornada touchscreen";
+static char *hp680_ts_phys = "input0";
+
+static void do_softint(void *data)
+{
+	int absx = 0, absy = 0;
+	u8 scpdr;
+	int touched = 0;
+
+	if (ctrl_inb(PHDR) & PHDR_TS_PEN_DOWN) {
+		scpdr = ctrl_inb(SCPDR);
+		scpdr |= SCPDR_TS_SCAN_ENABLE;
+		scpdr &= ~SCPDR_TS_SCAN_Y;
+		ctrl_outb(scpdr, SCPDR);
+		udelay(30);
+
+		absy = adc_single(ADC_CHANNEL_TS_Y);
+
+		scpdr = ctrl_inb(SCPDR);
+		scpdr |= SCPDR_TS_SCAN_Y;
+		scpdr &= ~SCPDR_TS_SCAN_X;
+		ctrl_outb(scpdr, SCPDR);
+		udelay(30);
+
+		absx = adc_single(ADC_CHANNEL_TS_X);
+
+		scpdr = ctrl_inb(SCPDR);
+		scpdr |= SCPDR_TS_SCAN_X;
+		scpdr &= ~SCPDR_TS_SCAN_ENABLE;
+		ctrl_outb(scpdr, SCPDR);
+		udelay(100);
+		touched = ctrl_inb(PHDR) & PHDR_TS_PEN_DOWN;
+	}
+
+	if (touched) {
+		input_report_key(&hp680_ts_dev, BTN_TOUCH, 1);
+		input_report_abs(&hp680_ts_dev, ABS_X, absx);
+		input_report_abs(&hp680_ts_dev, ABS_Y, absy);
+	} else {
+		input_report_key(&hp680_ts_dev, BTN_TOUCH, 0);
+	}
+
+	input_sync(&hp680_ts_dev);
+	enable_irq(HP680_TS_IRQ);
+}
+
+static irqreturn_t hp680_ts_interrupt(int irq, void *dev, struct pt_regs *regs)
+{
+	disable_irq_nosync(irq);
+	schedule_delayed_work(&work, HZ / 20);
+
+	return IRQ_HANDLED;
+}
+
+static int __init hp680_ts_init(void)
+{
+	u8 scpdr;
+	u16 scpcr;
+
+	scpdr = ctrl_inb(SCPDR);
+	scpdr |= SCPDR_TS_SCAN_X | SCPDR_TS_SCAN_Y;
+	scpdr &= ~SCPDR_TS_SCAN_ENABLE;
+	ctrl_outb(scpdr, SCPDR);
+
+	scpcr = ctrl_inw(SCPCR);
+	scpcr &= ~SCPCR_TS_MASK;
+	scpcr |= SCPCR_TS_ENABLE;
+	ctrl_outw(scpcr, SCPCR);
+
+	memset(&hp680_ts_dev, 0, sizeof(hp680_ts_dev));
+	init_input_dev(&hp680_ts_dev);
+
+	hp680_ts_dev.evbit[0] = BIT(EV_ABS) | BIT(EV_KEY);
+	hp680_ts_dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
+	hp680_ts_dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+
+	hp680_ts_dev.absmin[ABS_X] = HP680_TS_ABS_X_MIN;
+	hp680_ts_dev.absmin[ABS_Y] = HP680_TS_ABS_Y_MIN;
+	hp680_ts_dev.absmax[ABS_X] = HP680_TS_ABS_X_MAX;
+	hp680_ts_dev.absmax[ABS_Y] = HP680_TS_ABS_Y_MAX;
+
+	hp680_ts_dev.name = hp680_ts_name;
+	hp680_ts_dev.phys = hp680_ts_phys;
+	input_register_device(&hp680_ts_dev);
+
+	if (request_irq
+	    (HP680_TS_IRQ, hp680_ts_interrupt, SA_INTERRUPT, MODNAME, 0) < 0) {
+		printk(KERN_ERR "hp680_touchscreen.c : Can't allocate irq %d\n",
+		       HP680_TS_IRQ);
+		input_unregister_device(&hp680_ts_dev);
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+static void __exit hp680_ts_exit(void)
+{
+	free_irq(HP680_TS_IRQ, 0);
+	cancel_delayed_work(&work);
+	flush_scheduled_work();
+	input_unregister_device(&hp680_ts_dev);
+}
+
+module_init(hp680_ts_init);
+module_exit(hp680_ts_exit);
+
+MODULE_AUTHOR("Andriy Skulysh, askulysh@image.kiev.ua");
+MODULE_DESCRIPTION("HP Jornada 680 touchscreen driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/mk712.c b/drivers/input/touchscreen/mk712.c
new file mode 100644
index 0000000..2d14a57
--- /dev/null
+++ b/drivers/input/touchscreen/mk712.c
@@ -0,0 +1,222 @@
+/*
+ * ICS MK712 touchscreen controller driver
+ *
+ * Copyright (c) 1999-2002 Transmeta Corporation
+ * Copyright (c) 2005 Rick Koch <n1gp@hotmail.com>
+ * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
+ */
+
+/*
+ * 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.
+ */
+
+/*
+ * This driver supports the ICS MicroClock MK712 TouchScreen controller,
+ * found in Gateway AOL Connected Touchpad computers.
+ *
+ * Documentation for ICS MK712 can be found at:
+ * 	http://www.icst.com/pdf/mk712.pdf
+ */
+
+/*
+ * 1999-12-18: original version, Daniel Quinlan
+ * 1999-12-19: added anti-jitter code, report pen-up events, fixed mk712_poll
+ *             to use queue_empty, Nathan Laredo
+ * 1999-12-20: improved random point rejection, Nathan Laredo
+ * 2000-01-05: checked in new anti-jitter code, changed mouse protocol, fixed
+ *             queue code, added module options, other fixes, Daniel Quinlan
+ * 2002-03-15: Clean up for kernel merge <alan@redhat.com>
+ *             Fixed multi open race, fixed memory checks, fixed resource
+ *             allocation, fixed close/powerdown bug, switched to new init
+ * 2005-01-18: Ported to 2.6 from 2.4.28, Rick Koch
+ * 2005-02-05: Rewritten for the input layer, Vojtech Pavlik
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <asm/io.h>
+
+MODULE_AUTHOR("Daniel Quinlan <quinlan@pathname.com>, Vojtech Pavlik <vojtech@suse.cz>");
+MODULE_DESCRIPTION("ICS MicroClock MK712 TouchScreen driver");
+MODULE_LICENSE("GPL");
+
+static unsigned int mk712_io = 0x260;	/* Also 0x200, 0x208, 0x300 */
+module_param_named(io, mk712_io, uint, 0);
+MODULE_PARM_DESC(io, "I/O base address of MK712 touchscreen controller");
+
+static unsigned int mk712_irq = 10;	/* Also 12, 14, 15 */
+module_param_named(irq, mk712_irq, uint, 0);
+MODULE_PARM_DESC(irq, "IRQ of MK712 touchscreen controller");
+
+/* eight 8-bit registers */
+#define MK712_STATUS		0
+#define MK712_X			2
+#define MK712_Y			4
+#define MK712_CONTROL		6
+#define MK712_RATE		7
+
+/* status */
+#define	MK712_STATUS_TOUCH			0x10
+#define	MK712_CONVERSION_COMPLETE		0x80
+
+/* control */
+#define MK712_ENABLE_INT			0x01
+#define MK712_INT_ON_CONVERSION_COMPLETE	0x02
+#define MK712_INT_ON_CHANGE_IN_TOUCH_STATUS	0x04
+#define MK712_ENABLE_PERIODIC_CONVERSIONS	0x10
+#define MK712_READ_ONE_POINT			0x20
+#define MK712_POWERUP				0x40
+
+static int mk712_used = 0;
+static struct input_dev mk712_dev;
+static DEFINE_SPINLOCK(mk712_lock);
+
+static irqreturn_t mk712_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	unsigned char status;
+	static int debounce = 1;
+	static unsigned short last_x;
+	static unsigned short last_y;
+
+	spin_lock(&mk712_lock);
+	input_regs(&mk712_dev, regs);
+
+	status = inb(mk712_io + MK712_STATUS);
+
+	if (~status & MK712_CONVERSION_COMPLETE) {
+		debounce = 1;
+		goto end;
+	}
+
+	if (~status & MK712_STATUS_TOUCH)
+	{
+		debounce = 1;
+		input_report_key(&mk712_dev, BTN_TOUCH, 0);
+		goto end;
+	}
+
+	if (debounce)
+	{
+		debounce = 0;
+		goto end;
+	}
+
+	input_report_key(&mk712_dev, BTN_TOUCH, 1);
+	input_report_abs(&mk712_dev, ABS_X, last_x);
+	input_report_abs(&mk712_dev, ABS_Y, last_y);
+
+end:
+
+	last_x = inw(mk712_io + MK712_X) & 0x0fff;
+	last_y = inw(mk712_io + MK712_Y) & 0x0fff;
+	input_sync(&mk712_dev);
+	spin_unlock(&mk712_lock);
+	return IRQ_HANDLED;
+}
+
+static int mk712_open(struct input_dev *dev)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&mk712_lock, flags);
+
+	if (!mk712_used++) {
+
+		outb(0, mk712_io + MK712_CONTROL); /* Reset */
+
+		outb(MK712_ENABLE_INT | MK712_INT_ON_CONVERSION_COMPLETE |
+			MK712_INT_ON_CHANGE_IN_TOUCH_STATUS |
+			MK712_ENABLE_PERIODIC_CONVERSIONS |
+			MK712_POWERUP, mk712_io + MK712_CONTROL);
+
+		outb(10, mk712_io + MK712_RATE); /* 187 points per second */
+	}
+
+	spin_unlock_irqrestore(&mk712_lock, flags);
+
+	return 0;
+}
+
+static void mk712_close(struct input_dev *dev)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&mk712_lock, flags);
+
+	if (!--mk712_used)
+		outb(0, mk712_io + MK712_CONTROL);
+
+	spin_unlock_irqrestore(&mk712_lock, flags);
+}
+
+static struct input_dev mk712_dev = {
+	.evbit   = { BIT(EV_KEY) | BIT(EV_ABS) },
+	.keybit  = { [LONG(BTN_TOUCH)] = BIT(BTN_TOUCH) },
+	.absbit  = { BIT(ABS_X) | BIT(ABS_Y) },
+	.open    = mk712_open,
+	.close   = mk712_close,
+	.name    = "ICS MicroClock MK712 TouchScreen",
+	.phys    = "isa0260/input0",
+	.absmin  = { [ABS_X] = 0, [ABS_Y] = 0 },
+	.absmax  = { [ABS_X] = 0xfff, [ABS_Y] = 0xfff },
+	.absfuzz = { [ABS_X] = 88, [ABS_Y] = 88 },
+	.id      = {
+		.bustype = BUS_ISA,
+		.vendor  = 0x0005,
+		.product = 0x0001,
+		.version = 0x0100,
+	},
+};
+
+int __init mk712_init(void)
+{
+
+	if(!request_region(mk712_io, 8, "mk712"))
+	{
+		printk(KERN_WARNING "mk712: unable to get IO region\n");
+		return -ENODEV;
+	}
+
+	outb(0, mk712_io + MK712_CONTROL);
+
+	if ((inw(mk712_io + MK712_X) & 0xf000) ||	/* Sanity check */
+	    (inw(mk712_io + MK712_Y) & 0xf000) ||
+	    (inw(mk712_io + MK712_STATUS) & 0xf333)) {
+		printk(KERN_WARNING "mk712: device not present\n");
+		release_region(mk712_io, 8);
+		return -ENODEV;
+	}
+
+	if(request_irq(mk712_irq, mk712_interrupt, 0, "mk712", &mk712_dev))
+	{
+		printk(KERN_WARNING "mk712: unable to get IRQ\n");
+		release_region(mk712_io, 8);
+		return -EBUSY;
+	}
+
+	input_register_device(&mk712_dev);
+
+	printk(KERN_INFO "input: ICS MicroClock MK712 TouchScreen at %#x irq %d\n", mk712_io, mk712_irq);
+
+	return 0;
+}
+
+static void __exit mk712_exit(void)
+{
+	input_unregister_device(&mk712_dev);
+	free_irq(mk712_irq, &mk712_dev);
+	release_region(mk712_io, 8);
+}
+
+module_init(mk712_init);
+module_exit(mk712_exit);
diff --git a/drivers/input/touchscreen/mtouch.c b/drivers/input/touchscreen/mtouch.c
new file mode 100644
index 0000000..aa8ee78
--- /dev/null
+++ b/drivers/input/touchscreen/mtouch.c
@@ -0,0 +1,219 @@
+/*
+ * MicroTouch (3M) serial touchscreen driver
+ *
+ * Copyright (c) 2004 Vojtech Pavlik
+ */
+
+/*
+ * 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.
+ */
+
+/*
+ * 2005/02/19 Dan Streetman <ddstreet@ieee.org>
+ *   Copied elo.c and edited for MicroTouch protocol
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/init.h>
+
+#define DRIVER_DESC	"MicroTouch serial touchscreen driver"
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+/*
+ * Definitions & global arrays.
+ */
+
+#define MTOUCH_FORMAT_TABLET_STATUS_BIT 0x80
+#define MTOUCH_FORMAT_TABLET_TOUCH_BIT 0x40
+#define MTOUCH_FORMAT_TABLET_LENGTH 5
+#define MTOUCH_RESPONSE_BEGIN_BYTE 0x01
+#define MTOUCH_RESPONSE_END_BYTE 0x0d
+
+/* todo: check specs for max length of all responses */
+#define MTOUCH_MAX_LENGTH 16
+
+#define MTOUCH_MIN_XC 0
+#define MTOUCH_MAX_XC 0x3fff
+#define MTOUCH_MIN_YC 0
+#define MTOUCH_MAX_YC 0x3fff
+
+#define MTOUCH_GET_XC(data) (((data[2])<<7) | data[1])
+#define MTOUCH_GET_YC(data) (((data[4])<<7) | data[3])
+#define MTOUCH_GET_TOUCHED(data) (MTOUCH_FORMAT_TABLET_TOUCH_BIT & data[0])
+
+static char *mtouch_name = "MicroTouch Serial TouchScreen";
+
+/*
+ * Per-touchscreen data.
+ */
+
+struct mtouch {
+	struct input_dev dev;
+	struct serio *serio;
+	int idx;
+	unsigned char data[MTOUCH_MAX_LENGTH];
+	char phys[32];
+};
+
+static void mtouch_process_format_tablet(struct mtouch *mtouch, struct pt_regs *regs)
+{
+	struct input_dev *dev = &mtouch->dev;
+
+	if (MTOUCH_FORMAT_TABLET_LENGTH == ++mtouch->idx) {
+		input_regs(dev, regs);
+		input_report_abs(dev, ABS_X, MTOUCH_GET_XC(mtouch->data));
+		input_report_abs(dev, ABS_Y, MTOUCH_MAX_YC - MTOUCH_GET_YC(mtouch->data));
+		input_report_key(dev, BTN_TOUCH, MTOUCH_GET_TOUCHED(mtouch->data));
+		input_sync(dev);
+
+		mtouch->idx = 0;
+	}
+}
+
+static void mtouch_process_response(struct mtouch *mtouch, struct pt_regs *regs)
+{
+	if (MTOUCH_RESPONSE_END_BYTE == mtouch->data[mtouch->idx++]) {
+		/* FIXME - process response */
+		mtouch->idx = 0;
+	} else if (MTOUCH_MAX_LENGTH == mtouch->idx) {
+		printk(KERN_ERR "mtouch.c: too many response bytes\n");
+		mtouch->idx = 0;
+	}
+}
+
+static irqreturn_t mtouch_interrupt(struct serio *serio,
+		unsigned char data, unsigned int flags, struct pt_regs *regs)
+{
+	struct mtouch* mtouch = serio_get_drvdata(serio);
+
+	mtouch->data[mtouch->idx] = data;
+
+	if (MTOUCH_FORMAT_TABLET_STATUS_BIT & mtouch->data[0])
+		mtouch_process_format_tablet(mtouch, regs);
+	else if (MTOUCH_RESPONSE_BEGIN_BYTE == mtouch->data[0])
+		mtouch_process_response(mtouch, regs);
+	else
+		printk(KERN_DEBUG "mtouch.c: unknown/unsynchronized data from device, byte %x\n",mtouch->data[0]);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * mtouch_disconnect() is the opposite of mtouch_connect()
+ */
+
+static void mtouch_disconnect(struct serio *serio)
+{
+	struct mtouch* mtouch = serio_get_drvdata(serio);
+
+	input_unregister_device(&mtouch->dev);
+	serio_close(serio);
+	serio_set_drvdata(serio, NULL);
+	kfree(mtouch);
+}
+
+/*
+ * mtouch_connect() is the routine that is called when someone adds a
+ * new serio device that supports MicroTouch (Format Tablet) protocol and registers it as
+ * an input device.
+ */
+
+static int mtouch_connect(struct serio *serio, struct serio_driver *drv)
+{
+	struct mtouch *mtouch;
+	int err;
+
+	if (!(mtouch = kmalloc(sizeof(*mtouch), GFP_KERNEL)))
+		return -ENOMEM;
+
+	memset(mtouch, 0, sizeof(*mtouch));
+
+	init_input_dev(&mtouch->dev);
+	mtouch->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+	mtouch->dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+
+	input_set_abs_params(&mtouch->dev, ABS_X, MTOUCH_MIN_XC, MTOUCH_MAX_XC, 0, 0);
+	input_set_abs_params(&mtouch->dev, ABS_Y, MTOUCH_MIN_YC, MTOUCH_MAX_YC, 0, 0);
+
+	mtouch->serio = serio;
+
+	sprintf(mtouch->phys, "%s/input0", serio->phys);
+
+	mtouch->dev.private = mtouch;
+	mtouch->dev.name = mtouch_name;
+	mtouch->dev.phys = mtouch->phys;
+	mtouch->dev.id.bustype = BUS_RS232;
+	mtouch->dev.id.vendor = SERIO_MICROTOUCH;
+	mtouch->dev.id.product = 0;
+	mtouch->dev.id.version = 0x0100;
+
+	serio_set_drvdata(serio, mtouch);
+
+	err = serio_open(serio, drv);
+	if (err) {
+		serio_set_drvdata(serio, NULL);
+		kfree(mtouch);
+		return err;
+	}
+
+	input_register_device(&mtouch->dev);
+
+	printk(KERN_INFO "input: %s on %s\n", mtouch->dev.name, serio->phys);
+
+	return 0;
+}
+
+/*
+ * The serio driver structure.
+ */
+
+static struct serio_device_id mtouch_serio_ids[] = {
+	{
+		.type	= SERIO_RS232,
+		.proto	= SERIO_MICROTOUCH,
+		.id	= SERIO_ANY,
+		.extra	= SERIO_ANY,
+	},
+	{ 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, mtouch_serio_ids);
+
+static struct serio_driver mtouch_drv = {
+	.driver		= {
+		.name	= "mtouch",
+	},
+	.description	= DRIVER_DESC,
+	.id_table	= mtouch_serio_ids,
+	.interrupt	= mtouch_interrupt,
+	.connect	= mtouch_connect,
+	.disconnect	= mtouch_disconnect,
+};
+
+/*
+ * The functions for inserting/removing us as a module.
+ */
+
+static int __init mtouch_init(void)
+{
+	serio_register_driver(&mtouch_drv);
+	return 0;
+}
+
+static void __exit mtouch_exit(void)
+{
+	serio_unregister_driver(&mtouch_drv);
+}
+
+module_init(mtouch_init);
+module_exit(mtouch_exit);