path: root/meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-cypress-touch-driver.patch

From 03e11a278286392dc20de57a24cadbc16d9aac3a Mon Sep 17 00:00:00 2001
From: Priya Vijayan <priya.vijayan@intel.com>
Date: Tue, 27 Apr 2010 11:23:00 -0700
Subject: [PATCH] Touchscreen driver for Cypress panels

This driver is from aava

Signed-off-by: Priya Vijayan <priya.vijayan@intel.com>
---
 drivers/input/touchscreen/Kconfig         |    8 +
 drivers/input/touchscreen/Makefile        |    1 +
 drivers/input/touchscreen/cy8ctmg110_ts.c |  815 +++++++++++++++++++++++++++++
 3 files changed, 824 insertions(+), 0 deletions(-)
 create mode 100644 drivers/input/touchscreen/cy8ctmg110_ts.c

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 6dd2674..5ecf00d 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -103,6 +103,14 @@ config TOUCHSCREEN_CORGI
 	  NOTE: this driver is deprecated, try enable SPI and generic
 	  ADS7846-based touchscreen driver.
 
+config TOUCHSCREEN_CY8CTMG110 
+	tristate "cy8ctmg110 touchscreen"
+	depends on I2C
+	default y
+	help
+	Say Y here if you have a cy8ctmg110 touchscreen capasitive touchscreen
+	If unsure, say N.
+
 config TOUCHSCREEN_DA9034
 	tristate "Touchscreen support for Dialog Semiconductor DA9034"
 	depends on PMIC_DA903X
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 15ad257..e5b5fae 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_TOUCHSCREEN_ADS7846)	+= ads7846.o
 obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC)	+= atmel_tsadcc.o
 obj-$(CONFIG_TOUCHSCREEN_BITSY)		+= h3600_ts_input.o
 obj-$(CONFIG_TOUCHSCREEN_CORGI)		+= corgi_ts.o
+obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110)    += cy8ctmg110_ts.o
 obj-$(CONFIG_TOUCHSCREEN_DYNAPRO)	+= dynapro.o
 obj-$(CONFIG_TOUCHSCREEN_GUNZE)		+= gunze.o
 obj-$(CONFIG_TOUCHSCREEN_EETI)		+= eeti_ts.o
diff --git a/drivers/input/touchscreen/cy8ctmg110_ts.c b/drivers/input/touchscreen/cy8ctmg110_ts.c
new file mode 100644
index 0000000..5587385
--- /dev/null
+++ b/drivers/input/touchscreen/cy8ctmg110_ts.c
@@ -0,0 +1,815 @@
+/*
+ * cy8ctmg110_ts.c Driver for cypress touch screen controller
+ * Copyright (c) 2009 Aava Mobile
+ *
+ * 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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <asm/io.h>
+#include <linux/i2c.h>
+#include <linux/timer.h>
+#include <linux/gpio.h>
+#include <linux/hrtimer.h>
+
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <asm/ioctl.h>
+#include <asm/ipc_defs.h>
+#include <asm/uaccess.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <asm/ioctl.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+
+
+#define CY8CTMG110_DRIVER_NAME      "cy8ctmg110"
+#define CY8CTMG110_DRIVER_NAME_EXT  "cy8ctmg110 ext"
+/*#define MOORESTOWN_CDK*/
+/*#define CY8CTMG110_DEBUG_INFO*/
+/*#define POLL_TOUCH_EVENTS*/
+
+
+
+/*HW definations*/
+
+/*Main touch specific*/
+#define CY8CTMG110_I2C_ADDR             0x38  
+#define CY8CTMG110_RESET_PIN_GPIO       43
+#define CY8CTMG110_IRQ_PIN_GPIO         59
+
+/*Extended specific*/
+#define CY8CTMG110_I2C_ADDR_EXT         0x39  
+#define CY8CTMG110_RESET_PIN_GPIO_EXT   39
+#define CY8CTMG110_IRQ_PIN_GPIO_EXT     31
+
+
+#define CY8CTMG110_TOUCH_LENGHT     9787
+#define CY8CTMG110_SCREEN_LENGHT    8424
+
+
+/*Main Touch coordinates*/
+#define CY8CTMG110_X_MIN        0                
+#define CY8CTMG110_Y_MIN        0
+#define CY8CTMG110_X_MAX        864                
+#define CY8CTMG110_Y_MAX        480
+
+
+/*cy8ctmg110 registers defination*/
+#define CY8CTMG110_TOUCH_WAKEUP_TIME   0
+#define CY8CTMG110_TOUCH_SLEEP_TIME    2
+#define CY8CTMG110_TOUCH_X1            3
+#define CY8CTMG110_TOUCH_Y1            5
+#define CY8CTMG110_TOUCH_X2            7
+#define CY8CTMG110_TOUCH_Y2            9
+#define CY8CTMG110_FINGERS             11
+#define CY8CTMG110_GESTURE             12
+#define CY8CTMG110_VERSIONID           13   //not supported in touchpanel FW
+#define CY8CTMG110_REG_MAX             13
+
+#ifdef POLL_TOUCH_EVENTS
+    #define CY8CTMG110_POLL_TIMER_DELAY  1000*1000*100
+    #define TOUCH_MAX_I2C_FAILS          50
+#endif
+
+#define CY8CTMG110_POLL_TIMER_DELAY  1000*1000*100
+
+/* Scale factors for coordinates */
+#define X_SCALE_FACTOR 9387/8424
+#define Y_SCALE_FACTOR 97/100
+
+/* For tracing */
+static u16   g_y_trace_coord = 0;
+
+/*if soutcanyon*/
+static bool isSc = false;
+
+
+/*
+ * Touchtype
+ */
+enum touch_type {
+	TOUCH_KOSKI=1,
+	TOUCH_SC,
+	TOUCH_EXT,
+};
+
+/*
+ * The touch position structure.
+ */
+struct ts_event {
+    int  x1;
+    int  y1;
+    int  x2;
+    int  y2;
+    bool event_sended;
+};
+
+/*
+ * The touch driver structure.
+ */
+struct cy8ctmg110 {
+    struct input_dev    *input;
+    char                phys[32];
+    struct ts_event     tc;
+    struct i2c_client	*client;
+    bool                pending;
+    spinlock_t          lock;
+    bool                initController;
+    bool                sleepmode;
+    int                 irq_gpio;
+    int                 reset_gpio;
+    char                driver_name[20];
+    struct  delayed_work	work;
+    enum touch_type     version_id;
+#ifdef POLL_TOUCH_EVENTS
+    struct hrtimer      timer;
+    int                 i2c_fail_count;
+#endif
+};
+
+/*
+ * cy8ctmg110_poweroff is the routine that is called when touch hardware 
+ * will powered off
+ */
+static void cy8ctmg110_power(struct cy8ctmg110 *ts,bool poweron)
+{
+#ifdef CY8CTMG110_DEBUG_INFO
+    printk("%s power:%d\n",ts->driver_name,poweron);
+#endif
+    if (poweron)
+        gpio_direction_output(ts->reset_gpio, 0);
+    else
+        gpio_direction_output(ts->reset_gpio, 1);
+}
+/*
+ * cy8ctmg110_write_req write regs to the i2c devices
+ * 
+ */
+static int cy8ctmg110_write_req(struct cy8ctmg110 *tsc,unsigned char reg,unsigned char len,unsigned char *value)
+{
+    struct i2c_client *client = tsc->client;
+    unsigned int ret;
+    unsigned char i2c_data[]={0,0,0,0,0,0};
+#ifdef CY8CTMG110_DEBUG_INFO
+    printk("cy8ctmg110_init_req:\n");
+#endif
+
+    i2c_data[0]=reg;
+    memcpy(i2c_data+1,value,len);
+
+    {
+        struct i2c_msg msg[] = {
+            { client->addr, 0, len+1, i2c_data },
+        };
+
+        ret = i2c_transfer(client->adapter, msg, 1);
+
+        if (ret != 1) {
+            printk("cy8ctmg110 touch : i2c write data cmd failed \n");
+            return ret;
+        }
+    }
+
+    return 0;
+}
+/*
+ * get_time
+ * 
+ */
+#ifdef CY8CTMG110_DEBUG_INFO
+static inline long cy8ctmg110_get_time(void)
+{
+	 struct timeval t;
+	 do_gettimeofday(&t);
+	 return t.tv_usec;
+}
+#endif
+/*
+ * cy8ctmg110_read_req read regs from i2c devise
+ * 
+ */
+static int cy8ctmg110_read_req(struct cy8ctmg110 *tsc,unsigned char *i2c_data,unsigned char len ,unsigned char cmd)
+{
+    struct i2c_client *client = tsc->client;
+    unsigned int ret;
+    unsigned char regs_cmd[2]={0,0};
+#ifdef CY8CTMG110_DEBUG_INFO
+    long starttime = cy8ctmg110_get_time();
+#endif
+    regs_cmd[0]=cmd;
+
+    
+    /* first write slave position to i2c devices*/
+    {
+        struct i2c_msg msg1[] = {
+            { client->addr, 0, 1, regs_cmd },
+        };
+
+        ret = i2c_transfer(client->adapter, msg1, 1);
+
+        if (ret != 1) {
+#ifdef POLL_TOUCH_EVENTS
+            tsc->i2c_fail_count++;
+#endif
+        return ret;
+        }
+    }
+
+
+    /* Second read data from position*/
+    {
+        struct i2c_msg msg2[] = {
+            { client->addr, I2C_M_RD, len, i2c_data },
+        };
+
+        ret = i2c_transfer(client->adapter, msg2, 1);
+
+
+        if (ret != 1) {
+#ifdef POLL_TOUCH_EVENTS
+            tsc->i2c_fail_count++;
+#endif
+            return ret;
+        }
+    }
+#ifdef CY8CTMG110_DEBUG_INFO
+    printk("%s time to get data bytes read:%d  time:%d\n",tsc->driver_name,len,(cy8ctmg110_get_time()-starttime));
+#endif
+    return 0;
+}
+/*
+ * cy8ctmg110_send_event delevery touch event to the userpace
+ * function use normal input interface
+ */
+static void cy8ctmg110_send_event(void *tsc,int x,int y)
+{
+    struct cy8ctmg110	*ts = tsc;
+    struct input_dev *input = ts->input;
+    u16		x2, y2;
+#ifdef CY8CTMG110_DEBUG_INFO
+    printk("cy8ctmg110_send_event\n");
+#endif
+
+    if(ts->tc.event_sended == false){          
+        
+        if (ts->client->addr==CY8CTMG110_I2C_ADDR_EXT){
+            /*Extended touchpanel*/
+            input_report_key(input, BTN_TOUCH, 1);
+
+
+            if ( ts->pending == true){               
+                input_report_rel(input, REL_Y, (ts->tc.x1-x)*2);
+                input_report_rel(input, REL_X, (y - ts->tc.y1)*3);
+                ts->tc.y1 = y;
+                ts->tc.x1 = x;
+            }
+            else{
+                ts->pending = true;
+                ts->tc.y1 = y;
+                ts->tc.x1 = x;
+            }
+
+ 
+        }
+        else{
+            /*Main touchpanel*/
+            ts->tc.y1 = y;
+            ts->tc.x1 = x;
+            ts->pending = true;
+            input_report_key(input, BTN_TOUCH, 1);
+
+            x2 = y;
+            y2 = x;
+
+            if (isSc == false){
+                /*Main touchpanel in koski*/
+                x2 = (u16)(y*X_SCALE_FACTOR);
+                y2 = (u16)(x*Y_SCALE_FACTOR);
+            }
+            
+            input_report_abs(input, ABS_X, x2);
+            input_report_abs(input, ABS_Y, y2); 
+        }
+           
+        input_sync(input);
+        if(g_y_trace_coord)
+            printk("%s touch position X:%d (was = %d) Y:%d (was = %d)\n",ts->driver_name, x2, y, y2, x);
+    }
+
+}
+
+/*
+ * cy8ctmg110_touch_pos check touch position from i2c devices
+ * 
+ */
+static int cy8ctmg110_touch_pos(struct cy8ctmg110 *tsc)
+{
+    unsigned char reg_p[CY8CTMG110_REG_MAX];
+
+    memset(reg_p,0,CY8CTMG110_REG_MAX);
+
+    /*Reading coordinates*/
+    if (cy8ctmg110_read_req(tsc,reg_p,1,CY8CTMG110_FINGERS)==0){
+    	
+        /*number of touch*/
+        if (reg_p[0]==0){
+            if (tsc->pending == true){
+                struct input_dev *input = tsc->input;
+
+                input_report_key(input, BTN_TOUCH, 0);
+           
+                input_sync(input);
+                tsc->tc.event_sended = true;
+#ifdef CY8CTMG110_DEBUG_INFO
+                printk("cy8ctmg110_send_event ts->pending = true;\n");
+#endif
+                tsc->pending = false;
+            }            
+        }
+        else {
+
+            if (cy8ctmg110_read_req(tsc,reg_p,4,CY8CTMG110_TOUCH_X1)==0){
+                int x = 0,y = 0;
+                y = reg_p[2]<<8 | reg_p[3];
+                x = reg_p[0]<<8 | reg_p[1];  
+
+                if (tsc->tc.x1 != x || tsc->tc.y1 != y){
+                    tsc->tc.event_sended = false;
+                    cy8ctmg110_send_event(tsc,x,y);
+                }
+            }
+        }   
+    }
+    else{
+#ifdef CY8CTMG110_DEBUG_INFO
+        printk("cy8ctmg110 i2c reading error\n");
+#endif
+    }
+   
+    return 0;
+}
+/*
+ * cy8ctmg110_read_versionid delevery touch event to the userpace
+ * function use normal input interface
+ */
+static void cy8ctmg110_read_versionid(void *tsc)
+{
+    struct cy8ctmg110	*ts = tsc;
+    unsigned char reg_p[2];
+
+
+    if (cy8ctmg110_read_req(ts,reg_p,1,CY8CTMG110_VERSIONID)==0){
+        printk("%s  id 0x%x\n",ts->driver_name,reg_p[0]);
+
+        /*Ugly hack solution if SC
+        */
+
+        if(ts->client->addr==CY8CTMG110_I2C_ADDR_EXT)
+            isSc = true;
+
+        switch (reg_p[0]){
+            case 0x01:
+            	ts->version_id = TOUCH_EXT;
+                break;
+            case 0x02:
+            	ts->version_id = TOUCH_SC;
+                break;
+            case 0x03:
+            	ts->version_id = TOUCH_KOSKI;
+                break;
+            default:
+            	ts->version_id = TOUCH_KOSKI;
+                break;
+        }
+    }
+}
+
+
+#ifdef POLL_TOUCH_EVENTS
+/*
+ * if interup is'n in use the touch positions can reads by polling
+ * 
+ */
+static enum hrtimer_restart cy8ctmg110_timer(struct hrtimer *handle)
+{
+    struct cy8ctmg110 *ts = container_of(handle, struct cy8ctmg110, timer);
+    unsigned long flags;
+
+    spin_lock_irqsave(&ts->lock, flags);
+#ifdef CY8CTMG110_DEBUG_INFO
+    printk("cy8ctmg110_timer\n");
+#endif
+
+    cy8ctmg110_touch_pos(ts);
+
+    if (ts->i2c_fail_count<TOUCH_MAX_I2C_FAILS)
+        hrtimer_start(&ts->timer, ktime_set(0, CY8CTMG110_POLL_TIMER_DELAY),
+            HRTIMER_MODE_REL);
+
+    spin_unlock_irqrestore(&ts->lock, flags);
+
+    return HRTIMER_NORESTART;
+}
+#endif
+/*
+ * cy8ctmg110_init_controller set init value to touchcontroller
+ * 
+ */
+static bool cy8ctmg110_set_sleepmode(struct cy8ctmg110 *ts)
+{
+    unsigned char reg_p[3];
+
+    if(ts->sleepmode==true){
+        reg_p[0] = 0x00; reg_p[1] =0xff; reg_p[2] =5;
+    }else{
+        reg_p[0] = 0x10;reg_p[1] =0xff;reg_p[2] =0;
+    }
+
+    if (cy8ctmg110_write_req(ts,CY8CTMG110_TOUCH_WAKEUP_TIME,3,reg_p)){
+        return false;
+    }
+    ts->initController = true;
+
+    return true;
+}
+
+
+
+static void cy8ctmg110_work(struct work_struct *work)
+{
+	struct cy8ctmg110 *ts =
+		container_of(to_delayed_work(work), struct cy8ctmg110, work);
+
+	cy8ctmg110_touch_pos(ts);
+}
+
+
+/*
+ * cy8ctmg110_irq_handler irq handling function
+ * 
+ */
+static irqreturn_t cy8ctmg110_irq_handler(int irq, void *handle)
+{
+    struct cy8ctmg110 * tsc = (struct cy8ctmg110 *)handle;
+
+#ifdef CY8CTMG110_DEBUG_INFO
+    printk("%s  cy8ctmg110_irq_handler\n",tsc->driver_name);
+#endif
+    if (tsc->initController == false){
+        if (cy8ctmg110_set_sleepmode(tsc) == true)
+            tsc->initController = true;
+    }
+    else
+    {
+		schedule_delayed_work(&tsc->work,
+				      msecs_to_jiffies(1));
+    }
+
+#ifdef POLL_TOUCH_EVENTS
+    /*if interrupt supported in the touch controller
+    timer polling need to stop*/
+    tsc->i2c_fail_count = TOUCH_MAX_I2C_FAILS;
+#endif
+    return IRQ_HANDLED;
+}
+
+
+static int cy8ctmg110_probe(struct i2c_client *client,
+        const struct i2c_device_id *id)
+{
+    struct cy8ctmg110 *ts;
+    struct input_dev *input_dev;
+    int err;    
+
+    if (!i2c_check_functionality(client->adapter,
+                I2C_FUNC_SMBUS_READ_WORD_DATA))
+        return -EIO;
+
+    ts = kzalloc(sizeof(struct cy8ctmg110), GFP_KERNEL);
+    input_dev = input_allocate_device();
+        
+    if (!ts || !input_dev) {
+        err = -ENOMEM;
+        goto err_free_mem;
+    }
+
+    ts->client = client;
+    i2c_set_clientdata(client, ts);
+
+    ts->input = input_dev;
+    ts->pending = false;
+    ts->sleepmode = false;
+    
+
+    if(client->addr==CY8CTMG110_I2C_ADDR){
+        ts->reset_gpio = CY8CTMG110_RESET_PIN_GPIO;
+        input_dev->name = CY8CTMG110_DRIVER_NAME" Touchscreen";
+        snprintf(ts->driver_name, sizeof(ts->driver_name),"%s", CY8CTMG110_DRIVER_NAME);
+    }
+    else if (client->addr==CY8CTMG110_I2C_ADDR_EXT){
+        ts->reset_gpio = CY8CTMG110_RESET_PIN_GPIO_EXT;
+        input_dev->name = CY8CTMG110_DRIVER_NAME_EXT" Touchscreen";
+        snprintf(ts->driver_name, sizeof(ts->driver_name),"%s", CY8CTMG110_DRIVER_NAME_EXT);
+    }
+
+    snprintf(ts->phys, sizeof(ts->phys),
+        "%s/input0", dev_name(&client->dev));
+    
+    INIT_DELAYED_WORK(&ts->work, cy8ctmg110_work);
+
+    input_dev->phys = ts->phys;
+    input_dev->id.bustype = BUS_I2C;
+
+    spin_lock_init(&ts->lock);
+
+    input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
+        BIT_MASK(EV_REL) | BIT_MASK(EV_ABS);
+
+    input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+
+    input_set_capability(input_dev, EV_KEY, KEY_F);
+
+
+    input_set_abs_params(input_dev, ABS_X, CY8CTMG110_X_MIN, CY8CTMG110_X_MAX, 0, 0);
+    input_set_abs_params(input_dev, ABS_Y, CY8CTMG110_Y_MIN, CY8CTMG110_Y_MAX, 0, 0);
+    input_dev->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X)| BIT_MASK(REL_Y);
+
+    err = gpio_request(ts->reset_gpio, NULL);
+
+    if (err) {
+        printk("GPIO pin %d failed to request.\n", ts->reset_gpio);
+        goto err_free_thread;
+    }
+
+    cy8ctmg110_power(ts,true);
+    
+    ts->initController = false;
+#ifdef POLL_TOUCH_EVENTS
+    ts->i2c_fail_count = 0;
+    hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+    ts->timer.function = cy8ctmg110_timer;
+
+    hrtimer_start(&ts->timer, ktime_set(10, 0),
+            HRTIMER_MODE_REL);
+#endif
+    err = gpio_request(client->irq, "touch_irq_key");
+    
+    if (err < 0) {
+        printk("%s gpio-keys: failed to request GPIO %d,"
+            " error %d\n",ts->driver_name,client->irq, err);
+        goto err_free_thread;
+    }
+
+    err= gpio_direction_input(client->irq);
+
+    if (err < 0) {
+        pr_err("%s gpio-keys: failed to configure input"
+            " direction for GPIO %d, error %d\n",ts->driver_name,client->irq, err);
+        gpio_free(client->irq);
+        goto err_free_thread;
+    }
+
+    ts->irq_gpio = gpio_to_irq(client->irq);
+
+    if (ts->irq_gpio < 0) {
+        err = ts->irq_gpio;
+        pr_err("cy8ctmg110 gpio-keys: Unable to get irq number"
+                " for GPIO %d, error %d\n",
+				ts->irq_gpio, err);
+        gpio_free(ts->irq_gpio);
+        goto err_free_thread;
+    }
+
+    if (client->addr!=CY8CTMG110_I2C_ADDR_EXT){
+    err = request_irq(ts->irq_gpio, cy8ctmg110_irq_handler,
+            IRQF_TRIGGER_RISING | IRQF_SHARED,
+            "touch_reset_key",
+            ts);
+    }
+
+    if (err < 0) {
+        dev_err(&client->dev, "cy8ctmg110 irq %d busy? error %d\n", ts->irq_gpio ,err);
+        goto err_free_thread;
+    }
+
+    err = input_register_device(input_dev);
+    cy8ctmg110_read_versionid(ts);
+
+    if (err)
+        goto err_free_irq;
+    
+    return 0;
+
+ err_free_irq:
+    printk("%s err_free_irq\n",ts->driver_name);
+    free_irq(client->irq, ts);
+ err_free_thread:
+    printk("%s err_free_thread\n",ts->driver_name);
+ err_free_mem:
+    printk("%s err_free_mem\n",ts->driver_name);
+    input_free_device(input_dev);
+    kfree(ts);
+
+    return err;
+}
+/*
+ * cy8ctmg110_suspend
+ * 
+ */
+static int cy8ctmg110_suspend(struct i2c_client *client, pm_message_t mesg)
+{
+    if (device_may_wakeup(&client->dev))
+        enable_irq_wake(client->irq);
+
+    return 0;
+}
+/*
+ * cy8ctmg110_resume 
+ * 
+ */
+static int cy8ctmg110_resume(struct i2c_client *client)
+{
+    if (device_may_wakeup(&client->dev))
+        disable_irq_wake(client->irq);
+
+    return 0;
+}
+/*
+ * cy8ctmg110_remove
+ * 
+ */
+static int cy8ctmg110_remove(struct i2c_client *client)
+{
+    struct cy8ctmg110 *ts = i2c_get_clientdata(client);
+
+#ifdef CY8CTMG110_DEBUG_INFO
+    printk("cy8ctmg110_remove\n");
+#endif
+
+    cy8ctmg110_power(ts,false);
+#ifdef POLL_TOUCH_EVENTS
+    hrtimer_cancel(&ts->timer);
+#endif
+
+    free_irq(client->irq, ts);
+    input_unregister_device(ts->input);
+    kfree(ts);
+
+    return 0;
+}
+
+static struct i2c_device_id cy8ctmg110_idtable[] = {
+    { CY8CTMG110_DRIVER_NAME, 1 },
+    { CY8CTMG110_DRIVER_NAME_EXT, 1 },
+    { }
+};
+
+MODULE_DEVICE_TABLE(i2c, cy8ctmg110_idtable);
+
+static struct i2c_driver cy8ctmg110_driver = {
+    .driver = {
+        .owner	= THIS_MODULE,
+        .name	= CY8CTMG110_DRIVER_NAME,
+        .bus = &i2c_bus_type,
+    },
+    .id_table   = cy8ctmg110_idtable,
+    .probe      = cy8ctmg110_probe,
+    .remove     = cy8ctmg110_remove,
+    .suspend    = cy8ctmg110_suspend,
+    .resume     = cy8ctmg110_resume,
+};
+
+
+static int __init cy8ctmg110_init(void)
+{
+    printk("cy8ctmg110_init\n");
+
+    return i2c_add_driver(&cy8ctmg110_driver);
+}
+
+static void __exit cy8ctmg110_exit(void)
+{
+#ifdef CY8CTMG110_DEBUG_INFO
+    printk("cy8ctmg110_exit\n");
+#endif
+    i2c_del_driver(&cy8ctmg110_driver);
+}
+
+module_init(cy8ctmg110_init);
+module_exit(cy8ctmg110_exit);
+
+
+struct i2c_board_info __initdata koski_i2c_board_info2[] = {
+    {
+        I2C_BOARD_INFO(CY8CTMG110_DRIVER_NAME, CY8CTMG110_I2C_ADDR),
+        .irq = CY8CTMG110_IRQ_PIN_GPIO 
+    },
+    {
+        I2C_BOARD_INFO(CY8CTMG110_DRIVER_NAME_EXT, CY8CTMG110_I2C_ADDR_EXT),
+        .irq = CY8CTMG110_IRQ_PIN_GPIO_EXT
+    },
+};
+
+
+static int  __init koski_i2c_init(void)
+{
+    printk("init koski board\n");
+
+#ifdef MOORESTOWN_CDK
+    /*init koski i2c*/
+    i2c_register_board_info(1, koski_i2c_board_info2,
+        ARRAY_SIZE(koski_i2c_board_info2));
+#else
+    /*init koski i2c*/
+    i2c_register_board_info(0, koski_i2c_board_info2,
+        ARRAY_SIZE(koski_i2c_board_info2));
+#endif
+    return 0;
+}
+
+module_init(koski_i2c_init);
+
+MODULE_AUTHOR("Samuli Konttila <samuli.konttila@aavamobile.com>");
+MODULE_DESCRIPTION("cy8ctmg110 TouchScreen Driver");
+MODULE_LICENSE("GPL v2");
+
+
+// Aava access from sysfs begin
+static ssize_t aava_query_fw_info_func(struct class *class, char *buf)
+{
+	ssize_t	status;
+	int i = 0;
+	unsigned char mrst_fw_ver_info[16];
+
+	printk("!!! aava_query_fw_info_func() ENTER\n");
+
+    status = mrst_get_firmware_version(mrst_fw_ver_info);
+    for (i = 0; i < 16; i++){
+		printk("%x\n", mrst_fw_ver_info[i]);
+		buf[i] = mrst_fw_ver_info[i];
+	}
+	
+	return 16;
+}
+
+static ssize_t aava_enable_touch_traces_func(struct class *class, \
+                                             const char *buf, size_t len)
+{
+	ssize_t	status;
+	unsigned long value;
+
+	status = strict_strtoul(buf, 0, &value);
+	printk("!!! aava_enable_touch_traces_func() = %d\n", (int)value);
+
+    g_y_trace_coord = value;
+
+	return len;
+}
+
+static struct class_attribute aava_class_attrs[] = {
+	__ATTR(aava_query_fw_info, 0444, aava_query_fw_info_func, NULL),
+	__ATTR(aava_enable_touch_traces, 0200, NULL, aava_enable_touch_traces_func),
+	__ATTR_NULL,
+};
+
+static struct class aava_class = {
+	.name =		"aava",
+	.owner =	THIS_MODULE,
+
+	.class_attrs =	aava_class_attrs,
+};
+
+static int __init aava_sysfs_init(void)
+{
+	int		status;
+
+	status = class_register(&aava_class);
+	if (status < 0)
+		return status;
+
+	return status;
+}
+postcore_initcall(aava_sysfs_init);
+// Aava access from sysfs end
-- 
1.6.2.2