kernel_samsung_msm8974/drivers/input/keyboard/gpio_keys.c

/*
 * Driver for keys on GPIO lines capable of generating interrupts.
 *
 * Copyright 2005 Phil Blundell
 * Copyright 2010, 2011 David Jander <david@protonic.nl>
 *
 * 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/module.h>

#include <linux/init.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/sched.h>
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/workqueue.h>
#include <linux/gpio.h>
#include <linux/of_platform.h>
#include <linux/of_gpio.h>
#include <linux/spinlock.h>
#include <linux/wakelock.h>
#if defined(CONFIG_SEC_DEBUG)
#include <mach/sec_debug.h>
#endif
#include <linux/regulator/consumer.h>

/* if you want to check gpio status continually use this */
#if 0
#define PERIODIC_CHECK_GPIOS
#endif

#if defined(PERIODIC_CHECK_GPIOS)
#include <mach/gpiomux.h>
#include <mach/msm_iomap.h>
#include <linux/io.h>
struct delayed_work g_gpio_check_work;
static void sec_gpiocheck_work(struct work_struct *work);
enum {
    GPIO_IN_BIT  = 0,
    GPIO_OUT_BIT = 1
};
#define GPIO_IN_OUT(gpio)        (MSM_TLMM_BASE + 0x1004 + (0x10 * (gpio)))
#define PERIODIC_CHECK_GAP          1000
#define PERIODIC_CHECK_GPIONUM      95
#endif

struct gpio_button_data {
	struct gpio_keys_button *button;
	struct input_dev *input;
	struct timer_list timer;
	struct work_struct work;
	unsigned int timer_debounce;	/* in msecs */
	unsigned int irq;
	spinlock_t lock;
	bool disabled;
	bool key_pressed;
	#ifdef KEY_BOOSTER
	struct delayed_work	work_dvfs_off;
	struct delayed_work	work_dvfs_chg;
	bool dvfs_lock_status;
	struct mutex		dvfs_lock;
	#endif
};

struct gpio_keys_drvdata {
	struct input_dev *input;
	struct mutex disable_lock;
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
	struct mutex irq_lock;
#endif
	unsigned int n_buttons;
	int (*enable)(struct device *dev);
	void (*disable)(struct device *dev);
#ifdef CONFIG_SENSORS_HALL_DEBOUNCE
	bool debounce_set;
#endif
#ifdef CONFIG_SENSORS_HALL
	int gpio_flip_cover;
	int flip_code;
	int irq_flip_cover;
	bool flip_cover;
	struct delayed_work flip_cover_dwork;
	struct wake_lock flip_wake_lock;
#endif
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
	bool	gsm_area;
	bool	irq_state;
	bool	cover_state;
	bool	workaround_set;
#endif
	struct gpio_button_data data[0];
};
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
#define enable_hall_irq() \
	do { \
		if (drv_data->irq_state == false) { \
			drv_data->irq_state = true; \
			enable_irq(drv_data->irq_flip_cover); \
			pr_info("%s():irq is enabled\n", __func__);\
		} else { \
			pr_info("%s():irq is already enabled\n",\
					__func__);\
		}\
	} while (0)

#define disable_hall_irq() \
	do { \
		if (drv_data->irq_state == true) { \
			drv_data->irq_state = false; \
			disable_irq(drv_data->irq_flip_cover); \
			pr_info("%s():irq is disabled\n", __func__);\
		} else { \
			pr_info("%s():irq is already disabled\n",\
					__func__);\
		}\
	} while (0)

struct gpio_keys_drvdata *drv_data;
#endif

#ifdef PERIODIC_CHECK_GPIOS
static unsigned __msm_gpio_get_inout_lh(unsigned gpio)
{
    return __raw_readl(GPIO_IN_OUT(gpio)) & BIT(GPIO_IN_BIT);
}

static void sec_gpiocheck_work(struct work_struct *work)
{
    struct gpiomux_setting val;
    u32 i = PERIODIC_CHECK_GPIONUM;

    __msm_gpiomux_read(i, &val);

    printk(KERN_DEBUG "[gpio=%d] func=%d, drv=%d, full=%d, dir=%d dat=%d\n",
            i, val.func, val.drv, val.pull, val.dir, __msm_gpio_get_inout_lh(i) );

    schedule_delayed_work(&g_gpio_check_work, msecs_to_jiffies(PERIODIC_CHECK_GAP));
}
#endif
/*
 * SYSFS interface for enabling/disabling keys and switches:
 *
 * There are 4 attributes under /sys/devices/platform/gpio-keys/
 *	keys [ro]              - bitmap of keys (EV_KEY) which can be
 *	                         disabled
 *	switches [ro]          - bitmap of switches (EV_SW) which can be
 *	                         disabled
 *	disabled_keys [rw]     - bitmap of keys currently disabled
 *	disabled_switches [rw] - bitmap of switches currently disabled
 *
 * Userland can change these values and hence disable event generation
 * for each key (or switch). Disabling a key means its interrupt line
 * is disabled.
 *
 * For example, if we have following switches set up as gpio-keys:
 *	SW_DOCK = 5
 *	SW_CAMERA_LENS_COVER = 9
 *	SW_KEYPAD_SLIDE = 10
 *	SW_FRONT_PROXIMITY = 11
 * This is read from switches:
 *	11-9,5
 * Next we want to disable proximity (11) and dock (5), we write:
 *	11,5
 * to file disabled_switches. Now proximity and dock IRQs are disabled.
 * This can be verified by reading the file disabled_switches:
 *	11,5
 * If we now want to enable proximity (11) switch we write:
 *	5
 * to disabled_switches.
 *
 * We can disable only those keys which don't allow sharing the irq.
 */

/**
 * get_n_events_by_type() - returns maximum number of events per @type
 * @type: type of button (%EV_KEY, %EV_SW)
 *
 * Return value of this function can be used to allocate bitmap
 * large enough to hold all bits for given type.
 */
static inline int get_n_events_by_type(int type)
{
	BUG_ON(type != EV_SW && type != EV_KEY);

	return (type == EV_KEY) ? KEY_CNT : SW_CNT;
}

/**
 * gpio_keys_disable_button() - disables given GPIO button
 * @bdata: button data for button to be disabled
 *
 * Disables button pointed by @bdata. This is done by masking
 * IRQ line. After this function is called, button won't generate
 * input events anymore. Note that one can only disable buttons
 * that don't share IRQs.
 *
 * Make sure that @bdata->disable_lock is locked when entering
 * this function to avoid races when concurrent threads are
 * disabling buttons at the same time.
 */
static void gpio_keys_disable_button(struct gpio_button_data *bdata)
{
	if (!bdata->disabled) {
		/*
		 * Disable IRQ and possible debouncing timer.
		 */
		disable_irq(bdata->irq);
		if (bdata->timer_debounce)
			del_timer_sync(&bdata->timer);

		bdata->disabled = true;
	}
}

/**
 * gpio_keys_enable_button() - enables given GPIO button
 * @bdata: button data for button to be disabled
 *
 * Enables given button pointed by @bdata.
 *
 * Make sure that @bdata->disable_lock is locked when entering
 * this function to avoid races with concurrent threads trying
 * to enable the same button at the same time.
 */
static void gpio_keys_enable_button(struct gpio_button_data *bdata)
{
	if (bdata->disabled) {
		enable_irq(bdata->irq);
		bdata->disabled = false;
	}
}

/**
 * gpio_keys_attr_show_helper() - fill in stringified bitmap of buttons
 * @ddata: pointer to drvdata
 * @buf: buffer where stringified bitmap is written
 * @type: button type (%EV_KEY, %EV_SW)
 * @only_disabled: does caller want only those buttons that are
 *                 currently disabled or all buttons that can be
 *                 disabled
 *
 * This function writes buttons that can be disabled to @buf. If
 * @only_disabled is true, then @buf contains only those buttons
 * that are currently disabled. Returns 0 on success or negative
 * errno on failure.
 */
static ssize_t gpio_keys_attr_show_helper(struct gpio_keys_drvdata *ddata,
					  char *buf, unsigned int type,
					  bool only_disabled)
{
	int n_events = get_n_events_by_type(type);
	unsigned long *bits;
	ssize_t ret;
	int i;

	bits = kcalloc(BITS_TO_LONGS(n_events), sizeof(*bits), GFP_KERNEL);
	if (!bits)
		return -ENOMEM;

	for (i = 0; i < ddata->n_buttons; i++) {
		struct gpio_button_data *bdata = &ddata->data[i];

		if (bdata->button->type != type)
			continue;

		if (only_disabled && !bdata->disabled)
			continue;

		__set_bit(bdata->button->code, bits);
	}

	ret = bitmap_scnlistprintf(buf, PAGE_SIZE - 2, bits, n_events);
	buf[ret++] = '\n';
	buf[ret] = '\0';

	kfree(bits);

	return ret;
}

/**
 * gpio_keys_attr_store_helper() - enable/disable buttons based on given bitmap
 * @ddata: pointer to drvdata
 * @buf: buffer from userspace that contains stringified bitmap
 * @type: button type (%EV_KEY, %EV_SW)
 *
 * This function parses stringified bitmap from @buf and disables/enables
 * GPIO buttons accordingly. Returns 0 on success and negative error
 * on failure.
 */
static ssize_t gpio_keys_attr_store_helper(struct gpio_keys_drvdata *ddata,
					   const char *buf, unsigned int type)
{
	int n_events = get_n_events_by_type(type);
	unsigned long *bits;
	ssize_t error;
	int i;

	bits = kcalloc(BITS_TO_LONGS(n_events), sizeof(*bits), GFP_KERNEL);
	if (!bits)
		return -ENOMEM;

	error = bitmap_parselist(buf, bits, n_events);
	if (error)
		goto out;

	/* First validate */
	for (i = 0; i < ddata->n_buttons; i++) {
		struct gpio_button_data *bdata = &ddata->data[i];

		if (bdata->button->type != type)
			continue;

		if (test_bit(bdata->button->code, bits) &&
		    !bdata->button->can_disable) {
			error = -EINVAL;
			goto out;
		}
	}

	mutex_lock(&ddata->disable_lock);

	for (i = 0; i < ddata->n_buttons; i++) {
		struct gpio_button_data *bdata = &ddata->data[i];

		if (bdata->button->type != type)
			continue;

		if (test_bit(bdata->button->code, bits))
			gpio_keys_disable_button(bdata);
		else
			gpio_keys_enable_button(bdata);
	}

	mutex_unlock(&ddata->disable_lock);

out:
	kfree(bits);
	return error;
}

#define ATTR_SHOW_FN(name, type, only_disabled)				\
static ssize_t gpio_keys_show_##name(struct device *dev,		\
				     struct device_attribute *attr,	\
				     char *buf)				\
{									\
	struct platform_device *pdev = to_platform_device(dev);		\
	struct gpio_keys_drvdata *ddata = platform_get_drvdata(pdev);	\
									\
	return gpio_keys_attr_show_helper(ddata, buf,			\
					  type, only_disabled);		\
}

ATTR_SHOW_FN(keys, EV_KEY, false);
ATTR_SHOW_FN(switches, EV_SW, false);
ATTR_SHOW_FN(disabled_keys, EV_KEY, true);
ATTR_SHOW_FN(disabled_switches, EV_SW, true);

/*
 * ATTRIBUTES:
 *
 * /sys/devices/platform/gpio-keys/keys [ro]
 * /sys/devices/platform/gpio-keys/switches [ro]
 */
static DEVICE_ATTR(keys, S_IRUGO, gpio_keys_show_keys, NULL);
static DEVICE_ATTR(switches, S_IRUGO, gpio_keys_show_switches, NULL);

#define ATTR_STORE_FN(name, type)					\
static ssize_t gpio_keys_store_##name(struct device *dev,		\
				      struct device_attribute *attr,	\
				      const char *buf,			\
				      size_t count)			\
{									\
	struct platform_device *pdev = to_platform_device(dev);		\
	struct gpio_keys_drvdata *ddata = platform_get_drvdata(pdev);	\
	ssize_t error;							\
									\
	error = gpio_keys_attr_store_helper(ddata, buf, type);		\
	if (error)							\
		return error;						\
									\
	return count;							\
}

ATTR_STORE_FN(disabled_keys, EV_KEY);
ATTR_STORE_FN(disabled_switches, EV_SW);

/*
 * ATTRIBUTES:
 *
 * /sys/devices/platform/gpio-keys/disabled_keys [rw]
 * /sys/devices/platform/gpio-keys/disables_switches [rw]
 */
static DEVICE_ATTR(disabled_keys, S_IWUSR | S_IRUGO,
		   gpio_keys_show_disabled_keys,
		   gpio_keys_store_disabled_keys);
static DEVICE_ATTR(disabled_switches, S_IWUSR | S_IRUGO,
		   gpio_keys_show_disabled_switches,
		   gpio_keys_store_disabled_switches);

static struct attribute *gpio_keys_attrs[] = {
	&dev_attr_keys.attr,
	&dev_attr_switches.attr,
	&dev_attr_disabled_keys.attr,
	&dev_attr_disabled_switches.attr,
	NULL,
};

static struct attribute_group gpio_keys_attr_group = {
	.attrs = gpio_keys_attrs,
};

#ifdef KEY_BOOSTER
static void gpio_key_change_dvfs_lock(struct work_struct *work)
{
	struct gpio_button_data *bdata =
		container_of(work,
			struct gpio_button_data, work_dvfs_chg.work);
	int retval;
	mutex_lock(&bdata->dvfs_lock);
	retval = set_freq_limit(DVFS_TOUCH_ID,
			MIN_TOUCH_LIMIT_SECOND);
	if (retval < 0)
		printk(KERN_ERR
			"%s: booster change failed(%d).\n",
			__func__, retval);
	mutex_unlock(&bdata->dvfs_lock);
}

static void gpio_key_set_dvfs_off(struct work_struct *work)
{
	struct gpio_button_data *bdata =
		container_of(work,
			struct gpio_button_data, work_dvfs_off.work);
	int retval;
	mutex_lock(&bdata->dvfs_lock);
	retval = set_freq_limit(DVFS_TOUCH_ID, -1);
	if (retval < 0)
		printk(KERN_ERR
			"%s: booster stop failed(%d).\n",
			__func__, retval);
	bdata->dvfs_lock_status = false;
	mutex_unlock(&bdata->dvfs_lock);
}

static void gpio_key_set_dvfs_lock(struct gpio_button_data *bdata,
					uint32_t on)
{
	mutex_lock(&bdata->dvfs_lock);
	if (on == 0) {
		if (bdata->dvfs_lock_status) {
			schedule_delayed_work(&bdata->work_dvfs_off,
				msecs_to_jiffies(KEY_BOOSTER_OFF_TIME));
		}
	} else if (on == 1) {
		cancel_delayed_work(&bdata->work_dvfs_off);
		if (!bdata->dvfs_lock_status) {
			int ret = 0;
			ret = set_freq_limit(DVFS_TOUCH_ID,
					MIN_TOUCH_LIMIT);
			if (ret < 0)
				printk(KERN_ERR
					"%s: cpu first lock failed(%d)\n",
					__func__, ret);

			schedule_delayed_work(&bdata->work_dvfs_chg,
				msecs_to_jiffies(KEY_BOOSTER_CHG_TIME));
			bdata->dvfs_lock_status = true;
		}
	}
	mutex_unlock(&bdata->dvfs_lock);
}


static int gpio_key_init_dvfs(struct gpio_button_data *bdata)
{
	mutex_init(&bdata->dvfs_lock);

	INIT_DELAYED_WORK(&bdata->work_dvfs_off, gpio_key_set_dvfs_off);
	INIT_DELAYED_WORK(&bdata->work_dvfs_chg, gpio_key_change_dvfs_lock);

	bdata->dvfs_lock_status = false;
	return 0;
}
#endif

static void gpio_keys_gpio_report_event(struct gpio_button_data *bdata)
{
	const struct gpio_keys_button *button = bdata->button;
	struct input_dev *input = bdata->input;
	unsigned int type = button->type ?: EV_KEY;
	int state = (gpio_get_value_cansleep(button->gpio) ? 1 : 0) ^ button->active_low;

	printk(KERN_INFO "%s: %s key is %s\n",
		__func__, button->desc, state ? "pressed" : "released");

#ifdef CONFIG_SEC_DEBUG
	sec_debug_check_crash_key(button->code, state);
#endif
	if (type == EV_ABS) {
		if (state)
			input_event(input, type, button->code, button->value);
	} else {
		input_event(input, type, button->code, !!state);
	}
	input_sync(input);
}

static void gpio_keys_gpio_work_func(struct work_struct *work)
{
	struct gpio_button_data *bdata =
		container_of(work, struct gpio_button_data, work);
#ifdef KEY_BOOSTER
	const struct gpio_keys_button *button = bdata->button;
	int state = (gpio_get_value_cansleep(button->gpio) ? 1 : 0) ^ button->active_low;
#endif
	gpio_keys_gpio_report_event(bdata);
#ifdef KEY_BOOSTER
	if (button->code == KEY_HOMEPAGE)
	{
		gpio_key_set_dvfs_lock(bdata, !!state);
	}
#endif
}

static void gpio_keys_gpio_timer(unsigned long _data)
{
	struct gpio_button_data *bdata = (struct gpio_button_data *)_data;

	schedule_work(&bdata->work);
}

static irqreturn_t gpio_keys_gpio_isr(int irq, void *dev_id)
{
	struct gpio_button_data *bdata = dev_id;

	BUG_ON(irq != bdata->irq);

	if (bdata->timer_debounce)
		mod_timer(&bdata->timer,
			jiffies + msecs_to_jiffies(bdata->timer_debounce));
	else
		schedule_work(&bdata->work);

	return IRQ_HANDLED;
}

static void gpio_keys_irq_timer(unsigned long _data)
{
	struct gpio_button_data *bdata = (struct gpio_button_data *)_data;
	struct input_dev *input = bdata->input;
	unsigned long flags;

	spin_lock_irqsave(&bdata->lock, flags);
	if (bdata->key_pressed) {
		input_event(input, EV_KEY, bdata->button->code, 0);
		input_sync(input);
		bdata->key_pressed = false;
	}
	spin_unlock_irqrestore(&bdata->lock, flags);
}

static irqreturn_t gpio_keys_irq_isr(int irq, void *dev_id)
{
	struct gpio_button_data *bdata = dev_id;
	const struct gpio_keys_button *button = bdata->button;
	struct input_dev *input = bdata->input;
	unsigned long flags;

	BUG_ON(irq != bdata->irq);

	spin_lock_irqsave(&bdata->lock, flags);

	if (!bdata->key_pressed) {
		input_event(input, EV_KEY, button->code, 1);
		input_sync(input);

		if (!bdata->timer_debounce) {
			input_event(input, EV_KEY, button->code, 0);
			input_sync(input);
			goto out;
		}

		bdata->key_pressed = true;
	}

	if (bdata->timer_debounce)
		mod_timer(&bdata->timer,
			jiffies + msecs_to_jiffies(bdata->timer_debounce));
out:
	spin_unlock_irqrestore(&bdata->lock, flags);
	return IRQ_HANDLED;
}

static int __devinit gpio_keys_setup_key(struct platform_device *pdev,
					 struct input_dev *input,
					 struct gpio_button_data *bdata,
					 struct gpio_keys_button *button)
{
	const char *desc = button->desc ? button->desc : "gpio_keys";
	struct device *dev = &pdev->dev;
	irq_handler_t isr;
	unsigned long irqflags;
	int irq, error;

	bdata->input = input;
	bdata->button = button;
	spin_lock_init(&bdata->lock);

	if (gpio_is_valid(button->gpio)) {

		error = gpio_request(button->gpio, desc);
		if (error < 0) {
			dev_err(dev, "Failed to request GPIO %d, error %d\n",
				button->gpio, error);
			return error;
		}

		error = gpio_direction_input(button->gpio);
		if (error < 0) {
			dev_err(dev,
				"Failed to configure direction for GPIO %d, error %d\n",
				button->gpio, error);
			goto fail;
		}

		if (button->debounce_interval) {
			error = gpio_set_debounce(button->gpio,
					button->debounce_interval * 1000);
			/* use timer if gpiolib doesn't provide debounce */
			if (error < 0)
				bdata->timer_debounce =
						button->debounce_interval;
		}

		irq = gpio_to_irq(button->gpio);
		if (irq < 0) {
			error = irq;
			dev_err(dev,
				"Unable to get irq number for GPIO %d, error %d\n",
				button->gpio, error);
			goto fail;
		}
		bdata->irq = irq;

		INIT_WORK(&bdata->work, gpio_keys_gpio_work_func);
		setup_timer(&bdata->timer,
			    gpio_keys_gpio_timer, (unsigned long)bdata);

		isr = gpio_keys_gpio_isr;
		irqflags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;

	} else {
		if (!button->irq) {
			dev_err(dev, "No IRQ specified\n");
			return -EINVAL;
		}
		bdata->irq = button->irq;

		if (button->type && button->type != EV_KEY) {
			dev_err(dev, "Only EV_KEY allowed for IRQ buttons.\n");
			return -EINVAL;
		}

		bdata->timer_debounce = button->debounce_interval;
		setup_timer(&bdata->timer,
			    gpio_keys_irq_timer, (unsigned long)bdata);

		isr = gpio_keys_irq_isr;
		irqflags = 0;
	}

	input_set_capability(input, button->type ?: EV_KEY, button->code);

	/*
	 * If platform has specified that the button can be disabled,
	 * we don't want it to share the interrupt line.
	 */
	if (!button->can_disable)
		irqflags |= IRQF_SHARED;

	error = request_any_context_irq(bdata->irq, isr, irqflags, desc, bdata);
	if (error < 0) {
		dev_err(dev, "Unable to claim irq %d; error %d\n",
			bdata->irq, error);
		goto fail;
	}

	return 0;

fail:
	if (gpio_is_valid(button->gpio))
		gpio_free(button->gpio);

	return error;
}


#if defined(CONFIG_DUAL_LCD)
int samsung_switching_lcd(int flip);
int samsung_switching_tsp(int flip);
int samsung_switching_tkey(int flip);
int samsung_switching_ssp(int flip);
#endif

#ifdef CONFIG_SENSORS_HALL
static int flip_status_before;

#ifdef CONFIG_SEC_FACTORY
static void flip_cover_work(struct work_struct *work)
{
	struct gpio_keys_drvdata *ddata =
		container_of(work, struct gpio_keys_drvdata,
				flip_cover_dwork.work);
#if !defined (CONFIG_SEC_MILLET_PROJECT) || !defined (CONFIG_SEC_T8_PROJECT)
	int comp_val[2]={0};
#else
	int comp_val[3]={0};
#endif

	comp_val[0] = gpio_get_value(ddata->gpio_flip_cover);
#if !defined (CONFIG_SEC_MILLET_PROJECT) || !defined (CONFIG_SEC_T8_PROJECT)
	mdelay(30);
#else
	mdelay(10);
#endif
	comp_val[1] = gpio_get_value(ddata->gpio_flip_cover);
#if defined (CONFIG_SEC_MILLET_PROJECT) || defined (CONFIG_SEC_T8_PROJECT)
	mdelay(10);
	comp_val[2] = gpio_get_value(ddata->gpio_flip_cover);
#endif

#if !defined (CONFIG_SEC_MILLET_PROJECT) || !defined (CONFIG_SEC_T8_PROJECT)
	if (comp_val[0] == comp_val[1]) {
#else
	if ((comp_val[0] == comp_val[1]) && (comp_val[0] == comp_val[2])) {
#endif
		if (ddata->flip_code == SW_LID)
			ddata->flip_cover = !gpio_get_value(ddata->gpio_flip_cover);
		else
			ddata->flip_cover = gpio_get_value(ddata->gpio_flip_cover);

		printk(KERN_DEBUG "[keys] %s : %d code 0x%x\n",
			__func__, ddata->flip_cover, ddata->flip_code);

		input_report_switch(ddata->input,
			ddata->flip_code, ddata->flip_cover);
		input_sync(ddata->input);

		if (ddata->flip_cover != flip_status_before) {
#if defined(CONFIG_DUAL_LCD)
			samsung_switching_lcd(ddata->flip_cover);
			samsung_switching_tsp(ddata->flip_cover);
			samsung_switching_tkey(ddata->flip_cover);
			samsung_switching_ssp(ddata->flip_cover);
#endif
		}

		flip_status_before = ddata->flip_cover;
	} else {
		printk(KERN_DEBUG "%s : Value is not same!\n", __func__);
	}
}
#else // CONFIG_SEC_FACTORY
static void flip_cover_work(struct work_struct *work)
{
	struct gpio_keys_drvdata *ddata =
		container_of(work, struct gpio_keys_drvdata,
				flip_cover_dwork.work);

	if (ddata->flip_code == SW_LID)
		ddata->flip_cover = !gpio_get_value(ddata->gpio_flip_cover);
	else
		ddata->flip_cover = gpio_get_value(ddata->gpio_flip_cover);

	printk(KERN_DEBUG "[keys] %s : %d code 0x%x\n",
		__func__, ddata->flip_cover, ddata->flip_code);

	input_report_switch(ddata->input,
			ddata->flip_code, ddata->flip_cover);
	input_sync(ddata->input);

	if (ddata->flip_cover != flip_status_before) {
#if defined(CONFIG_DUAL_LCD)
		samsung_switching_lcd(ddata->flip_cover);
		samsung_switching_tsp(ddata->flip_cover);
		samsung_switching_tkey(ddata->flip_cover);
		samsung_switching_ssp(ddata->flip_cover);
#endif
	}

	flip_status_before = ddata->flip_cover;
}
#endif // CONFIG_SEC_FACTORY

#if defined (CONFIG_SEC_MILLET_PROJECT) || defined (CONFIG_SEC_T8_PROJECT)
static irqreturn_t flip_cover_detect(int irq, void *dev_id)
{
	struct gpio_keys_drvdata *ddata = dev_id;
#define HALL_COMPARISONS 6
	int comp_val[HALL_COMPARISONS]={0};
	int i;

	comp_val[0] = gpio_get_value(ddata->gpio_flip_cover);

	if(comp_val[0]) {
		wake_lock_timeout(&ddata->flip_wake_lock, HZ * 5 / 100); /* 50ms */
	} else {
		wake_unlock(&ddata->flip_wake_lock);
	}

	pr_info("[keys] %s flip_status : %d (%s)\n",
		__func__, comp_val[0], comp_val[0]?"on":"off");

	for(i=1;i<HALL_COMPARISONS;i++){
		mdelay(6);
		comp_val[i] = gpio_get_value(ddata->gpio_flip_cover);
		if(comp_val[i]!=comp_val[0]){
			pr_err("%s : Value is not same!\n", __func__);
			goto out;
		}
	}

	ddata->flip_cover = comp_val[0];
	pr_info("[keys] hall ic reported value: %d (%s)\n",
		ddata->flip_cover, ddata->flip_cover?"on":"off");

	input_report_switch(ddata->input,
		SW_FLIP, ddata->flip_cover);
	input_sync(ddata->input);
out:
	return IRQ_HANDLED;
}
#else
static irqreturn_t flip_cover_detect(int irq, void *dev_id)
{
	bool flip_status;
	struct gpio_keys_drvdata *ddata = dev_id;
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
	bool debounce_status;
#endif
#ifdef CONFIG_SENSORS_HALL_DEBOUNCE
	int DTIME_IRQ, DTIME_WAKE;

	/* Set Debounce time for HALL IC IRQ(wake_lock / IRQ recheck)
	 * ON : 140ms / 70ms
	 * OFF : 50ms / 10ms
	 */
	DTIME_IRQ = ddata->debounce_set ? (HZ*7/100) : (HZ*1/100);
	DTIME_WAKE = ddata->debounce_set ? (HZ*14/100) : (HZ*5/100);
#endif

	if (ddata->flip_code == SW_LID)
		flip_status = !gpio_get_value(ddata->gpio_flip_cover);
	else
		flip_status = gpio_get_value(ddata->gpio_flip_cover);

	cancel_delayed_work_sync(&ddata->flip_cover_dwork);
#ifdef CONFIG_SENSORS_HALL_DEBOUNCE
	printk(KERN_DEBUG "[keys] %s flip_satatus : %d, IRQt : %d, WAKEt : %d\n",
		__func__, flip_status, DTIME_IRQ, DTIME_WAKE);

	if(flip_status) {
		wake_lock_timeout(&ddata->flip_wake_lock, HZ * DTIME_WAKE);
		schedule_delayed_work(&ddata->flip_cover_dwork, DTIME_IRQ);
	} else {
		wake_unlock(&ddata->flip_wake_lock);
		wake_lock_timeout(&ddata->flip_wake_lock, HZ * DTIME_WAKE);
		schedule_delayed_work(&ddata->flip_cover_dwork, DTIME_IRQ);
	}
#else /* CONFIG_SENSORS_HALL_DEBOUNCE */
	printk(KERN_DEBUG "[keys] %s flip_satatus : %d\n",
		__func__, flip_status);

	if(flip_status) {
		wake_lock_timeout(&ddata->flip_wake_lock, HZ * 5 / 100); /* 50ms */
		schedule_delayed_work(&ddata->flip_cover_dwork, HZ * 1 / 100); /* 10ms */
	} else {
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
	if (ddata->gsm_area) {
		mdelay(7);
		debounce_status = gpio_get_value(ddata->gpio_flip_cover);
		if (debounce_status != flip_status) {
			printk(KERN_DEBUG "[keys] %s filp ignore IRQ\n",
				__func__);
			return IRQ_HANDLED;
		}
	}
#endif /* CONFIG_SENSORS_HALL_IRQ_CTRL */
		wake_unlock(&ddata->flip_wake_lock);
		schedule_delayed_work(&ddata->flip_cover_dwork, 0);
	}
#endif /* CONFIG_SENSORS_HALL_DEBOUNCE */
	return IRQ_HANDLED;
}
#endif
#endif /* CONFIG_SENSORS_HALL */


#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
void gpio_hall_irq_set(int state, bool auth_changed)
{
	if (auth_changed)
		drv_data->cover_state = state;

	if (drv_data->gsm_area) {
		pr_info("%s: cover state = %d\n",
				__func__, drv_data->cover_state);
		mutex_lock(&drv_data->irq_lock);
		if (state)
			enable_hall_irq();
		else
			disable_hall_irq();
		mutex_unlock(&drv_data->irq_lock);
	}
}
#endif

static int gpio_keys_open(struct input_dev *input)
{
	struct gpio_keys_drvdata *ddata = input_get_drvdata(input);

#ifdef CONFIG_SENSORS_HALL
	int ret = 0;
	int irq = gpio_to_irq(ddata->gpio_flip_cover);

	if(ddata->gpio_flip_cover == 0) {
		printk(KERN_DEBUG"[HALL_IC] : %s skip flip\n", __func__);
		goto skip_flip;
	}
	printk(KERN_DEBUG"[HALL_IC] : %s\n", __func__);

	INIT_DELAYED_WORK(&ddata->flip_cover_dwork, flip_cover_work);

	ret = request_threaded_irq(
			irq, NULL,
			flip_cover_detect,
			IRQF_DISABLED | IRQF_TRIGGER_RISING |
			IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
			"flip_cover", ddata);
	if (ret < 0) {
		printk(KERN_ERR "keys: failed to request flip cover irq %d gpio %d\n",
				irq, ddata->gpio_flip_cover);
	} else {
		/* update the current status */
		schedule_delayed_work(&ddata->flip_cover_dwork, HZ / 2);
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
		ddata->irq_state =  true;
#endif
	}
skip_flip:
#endif
	return ddata->enable ? ddata->enable(input->dev.parent) : 0;
}

static void gpio_keys_close(struct input_dev *input)
{
	struct gpio_keys_drvdata *ddata = input_get_drvdata(input);

	if (ddata->disable)
		ddata->disable(input->dev.parent);
}

#ifdef CONFIG_USE_VM_KEYBOARD_REJECT
bool reject_keyboard_specific_key;
EXPORT_SYMBOL(reject_keyboard_specific_key);

static ssize_t sysfs_reject_keyboard_spec_key_show(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	snprintf(buf, 10, "%s\n", reject_keyboard_specific_key ? "ENABLE" : "DISABLE");

	return strlen(buf);
}
static ssize_t sysfs_reject_keyboard_spec_key_store(struct device *dev,
		struct device_attribute *attr, const char *buf,
		size_t count)
{
	if (!strncasecmp(buf, "ENABLE", 6))
		reject_keyboard_specific_key = true;
	else if (!strncasecmp(buf, "DISABLE", 7))
		reject_keyboard_specific_key = false;
	else
		pr_err("%s: Wrong command, current state %s\n",
				__func__,
				reject_keyboard_specific_key ? "ENABLE" : "DISALBE");

	return count;
}

static DEVICE_ATTR(reject_key_comb, 0660, sysfs_reject_keyboard_spec_key_show, sysfs_reject_keyboard_spec_key_store);

#endif

#ifdef CONFIG_SENSORS_HALL_DEBOUNCE
static ssize_t sysfs_hall_debounce_show(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
	const char *mode;

	if (ddata->debounce_set)
		mode = "DEBOUNCE_TIME_ON";
	else
		mode = "DEBOUNCE_TIME_OFF";

	return sprintf(buf, "%s\n", mode);
}

static ssize_t sysfs_hall_debounce_store(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);

	if (!strncasecmp(buf, "ON", 2))
		ddata->debounce_set = true;
	else if (!strncasecmp(buf, "OFF", 3))
		ddata->debounce_set = false;
	else
		pr_info("%s:Wrong command, current state %s\n", __func__, buf);

	return count;
}

static DEVICE_ATTR(hall_irq_ctrl, 0660,
			sysfs_hall_debounce_show,
			sysfs_hall_debounce_store);
#endif
#ifdef CONFIG_SENSORS_HALL
static ssize_t sysfs_hall_detect_show(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);

	if (ddata->flip_cover)
		snprintf(buf, 6, "%s\n", "OPEN");
	else
		snprintf(buf, 7, "%s\n", "CLOSE");

	return strlen(buf);
}

static DEVICE_ATTR(hall_detect, 0664, sysfs_hall_detect_show, NULL);
#endif

#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
static ssize_t sysfs_hall_irq_ctrl_store(struct device *dev,
		struct device_attribute *attr, const char *buf,
		size_t count)
{
	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);

	if (ddata->workaround_set) {
		if (!strncasecmp(buf, "ON", 2)) {
			ddata->gsm_area = true;
			if (!ddata->cover_state)
				gpio_hall_irq_set(disable, false);
		} else if (!strncasecmp(buf, "OFF", 3)) {
			gpio_hall_irq_set(enable, false);
			ddata->gsm_area = false;
		} else {
			pr_info("%s: Wrong command, current state %s\n",
					__func__, ddata->gsm_area?"ON":"OFF");
		}
	}
	return count;
}

static DEVICE_ATTR(hall_irq_ctrl, S_IWUSR | S_IWGRP, NULL, sysfs_hall_irq_ctrl_store);
#endif
/*
 * Handlers for alternative sources of platform_data
 */
#ifdef CONFIG_OF
/*
 * Translate OpenFirmware node properties into platform_data
 */
static int gpio_keys_get_devtree_pdata(struct device *dev,
			    struct gpio_keys_platform_data *pdata)
{
	struct device_node *node, *pp;
	int i;
	struct gpio_keys_button *buttons;
	struct regulator *vddo_vreg;
	u32 reg;

	node = dev->of_node;
	if (node == NULL)
		return -ENODEV;

	memset(pdata, 0, sizeof *pdata);

	pdata->rep = !!of_get_property(node, "autorepeat", NULL);
	pdata->name = of_get_property(node, "input-name", NULL);

	vddo_vreg = devm_regulator_get(dev, "vddo");
	if (IS_ERR(vddo_vreg))
	dev_err(dev, "[Keys] no regulator: ignoring\n");
	else{
		if(!of_property_read_u32(node, "vddo-voltage", &reg))
		regulator_set_voltage(vddo_vreg, reg*1000, reg*1000);
		if(regulator_enable(vddo_vreg))
			return -EINVAL;
	}
	/* First count the subnodes */
	pdata->nbuttons = 0;
	pp = NULL;
	while ((pp = of_get_next_child(node, pp)))
		pdata->nbuttons++;

	if (pdata->nbuttons == 0)
		return -ENODEV;

	buttons = kzalloc(pdata->nbuttons * (sizeof *buttons), GFP_KERNEL);
	if (!buttons)
		return -ENOMEM;

	pp = NULL;
	i = 0;
	while ((pp = of_get_next_child(node, pp))) {
		enum of_gpio_flags flags;

		if (!of_find_property(pp, "gpios", NULL)) {
			pdata->nbuttons--;
			dev_warn(dev, "Found button without gpios\n");
			continue;
		}
		buttons[i].gpio = of_get_gpio_flags(pp, 0, &flags);
		buttons[i].active_low = flags & OF_GPIO_ACTIVE_LOW;

		if (of_property_read_u32(pp, "linux,code", &reg)) {
			dev_err(dev, "Button without keycode: 0x%x\n", buttons[i].gpio);
			goto out_fail;
		}
		buttons[i].code = reg;

		buttons[i].desc = of_get_property(pp, "label", NULL);
#ifdef CONFIG_SENSORS_HALL
		if ((buttons[i].code == SW_FLIP) || (buttons[i].code == SW_LID)) {
			pdata->gpio_flip_cover = buttons[i].gpio;
			pdata->flip_code = buttons[i].code;
			pdata->nbuttons--;
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
			pdata->workaround_set = (of_property_read_bool(pp, "hall_wa_disable") ? false : true);
#endif
			dev_info(dev, "[Hall_IC] device tree was founded\n");
			continue;
		}
#endif
		if (of_property_read_u32(pp, "linux,input-type", &reg) == 0)
			buttons[i].type = reg;
		else
			buttons[i].type = EV_KEY;

		buttons[i].wakeup = !!of_get_property(pp, "gpio-key,wakeup", NULL);

		if (of_property_read_u32(pp, "debounce-interval", &reg) == 0)
			buttons[i].debounce_interval = reg;
		else
			buttons[i].debounce_interval = 5;

		dev_info(dev, "%s: label:%s, gpio:%d, code:%d, type:%d, debounce:%d\n",
				__func__, buttons[i].desc, buttons[i].gpio,
				buttons[i].code, buttons[i].type,
				buttons[i].debounce_interval);
		i++;
	}

	pdata->buttons = buttons;

	return 0;

out_fail:
	kfree(buttons);
	return -ENODEV;
}

static struct of_device_id gpio_keys_of_match[] = {
	{ .compatible = "gpio-keys", },
	{ },
};
MODULE_DEVICE_TABLE(of, gpio_keys_of_match);

#else

static int gpio_keys_get_devtree_pdata(struct device *dev,
			    struct gpio_keys_platform_data *altp)
{
	return -ENODEV;
}

#define gpio_keys_of_match NULL

#endif

static void gpio_remove_key(struct gpio_button_data *bdata)
{
	free_irq(bdata->irq, bdata);
	if (bdata->timer_debounce)
		del_timer_sync(&bdata->timer);
	cancel_work_sync(&bdata->work);
	if (gpio_is_valid(bdata->button->gpio))
		gpio_free(bdata->button->gpio);
}

#ifdef CONFIG_SEC_PATEK_PROJECT
extern int check_short_key(void);
#endif
#if defined(CONFIG_SEC_PATEK_PROJECT) || defined(CONFIG_SEC_S_PROJECT)
extern int check_short_pkey(void);	// using qpnp_power_on.c
#endif

static ssize_t  sysfs_key_onoff_show(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
	int index ;
	int state = 0;
	for (index = 0; index < ddata->n_buttons; index++) {
		struct gpio_button_data *button;
		button = &ddata->data[index];
		state = (gpio_get_value_cansleep(button->button->gpio) ? 1 : 0)\
			^ button->button->active_low;
		if (state == 1)
			break;
	}
#ifdef CONFIG_SEC_PATEK_PROJECT
	if(state || check_short_key() || check_short_pkey())
		state = 1;
#endif
	pr_info("key state:%d\n",  state);
	return snprintf(buf, 5, "%d\n", state);
}
static DEVICE_ATTR(sec_key_pressed, 0664 , sysfs_key_onoff_show, NULL);

#if defined(CONFIG_SEC_S_PROJECT)
static ssize_t sysfs_key_code_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
	int i;
	int volume_up=0, volume_down=0, power=0;

	for (i = 0; i < ddata->n_buttons; i++) {
		struct gpio_button_data *bdata = &ddata->data[i];

		if(bdata->button->code==KEY_VOLUMEUP)
			volume_up = (gpio_get_value_cansleep(bdata->button->gpio) ? 1 : 0) ^ bdata->button->active_low;
		else if(bdata->button->code==KEY_VOLUMEDOWN)
			volume_down = (gpio_get_value_cansleep(bdata->button->gpio) ? 1 : 0) ^ bdata->button->active_low;

		//pr_info("%s, code=%d %d/%d\n",  __func__,bdata->button->code, i,ddata->n_buttons );
	}
	power = check_short_pkey();

	sprintf(buf, "%d %d %d", volume_up, volume_down, power);

	return strlen(buf);
}
static DEVICE_ATTR(sec_key_pressed_code, 0664 , sysfs_key_code_show, NULL);
#endif

/* the volume keys can be the wakeup keys in special case */
static ssize_t wakeup_enable(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
	int n_events = get_n_events_by_type(EV_KEY);
	unsigned long *bits;
	ssize_t error;
	int i;

	bits = kcalloc(BITS_TO_LONGS(n_events),
			sizeof(*bits), GFP_KERNEL);
	if (!bits)
		return -ENOMEM;

	error = bitmap_parselist(buf, bits, n_events);
	if (error)
		goto out;

	for (i = 0; i < ddata->n_buttons; i++) {
		struct gpio_button_data *button = &ddata->data[i];
		if (button->button->type == EV_KEY) {
			if (test_bit(button->button->code, bits))
				button->button->wakeup = 1;
			else
				button->button->wakeup = 0;
			pr_info("%s wakeup status %d\n", button->button->desc,\
					button->button->wakeup);
		}
	}

out:
	kfree(bits);
	return count;
}

static DEVICE_ATTR(wakeup_keys, 0664, NULL, wakeup_enable);

#if defined (CONFIG_SEC_MILLET_PROJECT) || defined (CONFIG_SEC_BERLUTI_PROJECT) || defined (CONFIG_SEC_T8_PROJECT)
struct regulator *lvs1_1p8 = NULL;
#endif

#if defined(CONFIG_SEC_PATEK_PROJECT)
static struct regulator *keyled_3p3=NULL;
static int keypadled_powerset(struct device *dev)
{
	int ret;

	printk(KERN_ERR "[Key_LED] %s : %d\n",__func__,__LINE__);
	if(!keyled_3p3)
		keyled_3p3 = regulator_get(NULL, "8084_l22");

	if (IS_ERR(keyled_3p3)) {
		pr_err("%s: could not get vdda vreg, rc=%ld\n",
		__func__, PTR_ERR(keyled_3p3));
		return PTR_ERR(keyled_3p3);
	}

	ret = regulator_set_voltage(keyled_3p3,
		3300000, 3300000);
	if (ret)
		pr_err("%s: error vreg_l22 set voltage ret=%d\n",
		       __func__, ret);

	printk(KERN_ERR "[Key_LED] %s : %d\n",__func__,__LINE__);

	return 0;
}

static int keypadled_poweron(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
{
	int ret;
	int data;

	sscanf(buf, "%d", &data);

	printk(KERN_ERR "[Key_LED] %s : %d data=%d\n",__func__,__LINE__,data);

	if(!keyled_3p3){
		pr_err("%s: keyled_3p3 is null\n",__func__);
		return size;
	}

	if(data){
		ret = regulator_enable(keyled_3p3);
		if (ret)
			pr_err("%s: error l22 enabling regulator\n", __func__);
	}
	else{
		ret = regulator_disable(keyled_3p3);
		if (ret)
			pr_err("%s: error l22 disabling regulator\n", __func__);
	}

	printk(KERN_ERR "[Key_LED] %s : %d\n",__func__,__LINE__);

	return size;
}

static DEVICE_ATTR(brightness, 0664, NULL, keypadled_poweron);

static ssize_t sysfs_flip_status_show(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);

	if (ddata->flip_cover)
		snprintf(buf, 3, "0\n");
	else
		snprintf(buf, 3, "1\n");

	return strlen(buf);
}

static DEVICE_ATTR(flipStatus, 0444, sysfs_flip_status_show, NULL);

#endif

static int __devinit gpio_keys_probe(struct platform_device *pdev)
{
	const struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
	struct gpio_keys_drvdata *ddata;
	struct gpio_keys_button *button = NULL;
	struct gpio_button_data *bdata = NULL;
	struct device *dev = &pdev->dev;
	struct gpio_keys_platform_data alt_pdata;
	struct input_dev *input;
	int i, error;
	int wakeup = 0;
	int ret;
	struct device *sec_key;
#ifdef CONFIG_SEC_PATEK_PROJECT
	struct device *sec_keypad;
	struct device *sec_flip;
#endif

	if (!pdata) {
		error = gpio_keys_get_devtree_pdata(dev, &alt_pdata);
		if (error)
			return error;
		pdata = &alt_pdata;
	}

	ddata = kzalloc(sizeof(struct gpio_keys_drvdata) +
			pdata->nbuttons * sizeof(struct gpio_button_data),
			GFP_KERNEL);
	input = input_allocate_device();
	if (!ddata || !input) {
		dev_err(dev, "failed to allocate state\n");
		error = -ENOMEM;
		goto fail1;
	}

	ddata->input = input;
	ddata->n_buttons = pdata->nbuttons;
	ddata->enable = pdata->enable;
	ddata->disable = pdata->disable;
#ifdef CONFIG_SENSORS_HALL_DEBOUNCE
	ddata->debounce_set = pdata->debounce_set;
#endif
#ifdef CONFIG_SENSORS_HALL

#if defined (CONFIG_SEC_MILLET_PROJECT) || defined (CONFIG_SEC_BERLUTI_PROJECT)\
	|| defined (CONFIG_SEC_MATISSE_PROJECT)	|| defined (CONFIG_SEC_ATLANTIC_PROJECT)\
    || defined (CONFIG_SEC_MEGA2_PROJECT) || defined (CONFIG_SEC_T8_PROJECT) || defined (CONFIG_SEC_T10_PROJECT) || defined(CONFIG_SEC_HESTIA_PROJECT)
	ret = gpio_request(pdata->gpio_flip_cover,"HALL");
	if(ret)
		printk(KERN_CRIT "[HALL IC] gpio Request FAIL\n");
	else {
		gpio_tlmm_config(GPIO_CFG(pdata->gpio_flip_cover,0, GPIO_CFG_INPUT, GPIO_CFG_NO_PULL,GPIO_CFG_2MA),GPIO_CFG_DISABLE);
	}
#endif
	ddata->gpio_flip_cover = pdata->gpio_flip_cover;
	ddata->flip_code = pdata->flip_code;
	ddata->irq_flip_cover = gpio_to_irq(ddata->gpio_flip_cover);
	wake_lock_init(&ddata->flip_wake_lock, WAKE_LOCK_SUSPEND,
		"flip_wake_lock");
	flip_status_before = -1;
#endif
	mutex_init(&ddata->disable_lock);
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
	mutex_init(&ddata->irq_lock);
#endif

	platform_set_drvdata(pdev, ddata);
	input_set_drvdata(input, ddata);

	input->name = pdata->name ? : pdev->name;
	input->phys = "gpio-keys/input0";
	input->dev.parent = &pdev->dev;
#ifdef CONFIG_SENSORS_HALL
	if(ddata->gpio_flip_cover != 0) {
		input->evbit[0] |= BIT_MASK(EV_SW);
		input_set_capability(input, EV_SW, ddata->flip_code);
	}
#endif
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
	ddata->gsm_area = false;
	ddata->cover_state = false;
	ddata->workaround_set = pdata->workaround_set;
	drv_data = ddata;
#endif
#ifdef CONFIG_SENSORS_HALL_DEBOUNCE
	ddata->debounce_set = false;
#endif
	input->open = gpio_keys_open;
	input->close = gpio_keys_close;

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

	/* Enable auto repeat feature of Linux input subsystem */
	if (pdata->rep)
		__set_bit(EV_REP, input->evbit);

	for (i = 0; i < pdata->nbuttons; i++) {
		button = &pdata->buttons[i];
		bdata = &ddata->data[i];

		error = gpio_keys_setup_key(pdev, input, bdata, button);
		if (error)
			goto fail2;
#ifdef KEY_BOOSTER
		error = gpio_key_init_dvfs(bdata);
		if (error < 0) {
			dev_err(dev, "Fail get dvfs level for touch booster\n");
			goto fail2;
		}
#endif
		if (button->wakeup)
			wakeup = 1;
	}

	error = sysfs_create_group(&pdev->dev.kobj, &gpio_keys_attr_group);
	if (error) {
		dev_err(dev, "Unable to export keys/switches, error: %d\n",
			error);
		goto fail2;
	}

	error = input_register_device(input);
	if (error) {
		dev_err(dev, "Unable to register input device, error: %d\n",
			error);
		goto fail3;
	}

	/* get current state of buttons that are connected to GPIOs */
	for (i = 0; i < pdata->nbuttons; i++) {
		bdata = &ddata->data[i];
		if (gpio_is_valid(bdata->button->gpio))
			gpio_keys_gpio_report_event(bdata);
	}
	input_sync(input);

	sec_key = device_create(sec_class, NULL, 0, NULL, "sec_key");
	if (IS_ERR(sec_key))
		pr_err("Failed to create device(sec_key)!\n");

#ifdef CONFIG_SEC_PATEK_PROJECT
	sec_keypad=device_create(sec_class, NULL, 0, NULL, "sec_keypad");
	if (device_create_file(sec_keypad, &dev_attr_brightness) < 0)
		pr_err("Failed to create device file(%s)!\n", dev_attr_brightness.attr.name);

	sec_flip = device_create(sec_class, NULL, 0, NULL, "sec_flip");
	if (device_create_file(sec_flip, &dev_attr_flipStatus) < 0)
		pr_err("Failed to create device file(%s)!\n", dev_attr_flipStatus.attr.name);
#endif

	ret = device_create_file(sec_key, &dev_attr_sec_key_pressed);
	if (ret) {
		pr_err("Failed to create device file in sysfs entries(%s)!\n",
				dev_attr_sec_key_pressed.attr.name);
	}
#if defined(CONFIG_SEC_S_PROJECT)
	ret = device_create_file(sec_key, &dev_attr_sec_key_pressed_code);
	if (ret) {
		pr_err("Failed to create device file in sysfs entries(%s)!\n",
				dev_attr_sec_key_pressed_code.attr.name);
	}
#endif

#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
	if(ddata->gpio_flip_cover != 0) {
		ret = device_create_file(sec_key, &dev_attr_hall_irq_ctrl);
		if (ret < 0) {
			pr_err("Failed to create device file(%s)!, error: %d\n",
				dev_attr_hall_irq_ctrl.attr.name, ret);
		}
	}
#endif
#if defined(CONFIG_SENSORS_HALL)
	if(ddata->gpio_flip_cover != 0) {
		ret = device_create_file(sec_key, &dev_attr_hall_detect);
		if (ret < 0) {
			pr_err("Failed to create device file(%s)!, error: %d\n",
				dev_attr_hall_detect.attr.name, ret);
		}
	}
#if defined(CONFIG_SENSORS_HALL_DEBOUNCE)
	if(ddata->gpio_flip_cover != 0) {
		ret = device_create_file(sec_key, &dev_attr_hall_irq_ctrl);
		if (ret < 0) {
			pr_err("Failed to create device file(%s)!, error: %d\n",
				dev_attr_hall_irq_ctrl.attr.name, ret);
		}
	}
#endif
#if defined (CONFIG_SEC_MILLET_PROJECT) || defined (CONFIG_SEC_BERLUTI_PROJECT) ||  defined (CONFIG_SEC_T8_PROJECT)
	if (!lvs1_1p8) {
		lvs1_1p8 = regulator_get(dev, "8226_lvs1");
		if(!lvs1_1p8)
			printk(KERN_CRIT "%s: regulator_get for 8226_lvs1 failed\n", __func__);
		else {
			ret = regulator_enable(lvs1_1p8);
			if (ret){
				regulator_put(lvs1_1p8);
				printk(KERN_CRIT "%s: Failed to enable regulator lvs1_1p8.\n",__func__);
			}
		}
	}
#endif

#endif

#ifdef CONFIG_USE_VM_KEYBOARD_REJECT
	reject_keyboard_specific_key = false;
	ret = device_create_file(sec_key, &dev_attr_reject_key_comb);
	if (ret < 0) {
		pr_err("Failed to create device file(%s), error: %d\n",
				dev_attr_reject_key_comb.attr.name, ret);
	}
#endif
	ret = device_create_file(sec_key, &dev_attr_wakeup_keys);
	if (ret < 0) {
		pr_err("Failed to create device file(%s), error: %d\n",
				dev_attr_wakeup_keys.attr.name, ret);
	}
	dev_set_drvdata(sec_key, ddata);

	device_init_wakeup(&pdev->dev, wakeup);

#if defined(CONFIG_SEC_PATEK_PROJECT)
	keypadled_powerset(&pdev->dev);
	dev_set_drvdata(sec_flip, ddata);
#endif

#ifdef PERIODIC_CHECK_GPIOS
    INIT_DELAYED_WORK_DEFERRABLE(&g_gpio_check_work,
            sec_gpiocheck_work);
    schedule_delayed_work(&g_gpio_check_work,
            msecs_to_jiffies(0));
#endif

	return 0;

 fail3:
	sysfs_remove_group(&pdev->dev.kobj, &gpio_keys_attr_group);
 fail2:
	while (--i >= 0)
		gpio_remove_key(&ddata->data[i]);

	platform_set_drvdata(pdev, NULL);
#ifdef CONFIG_SENSORS_HALL
	wake_lock_destroy(&ddata->flip_wake_lock);
#endif
 fail1:
	input_free_device(input);
	kfree(ddata);
	/* If we have no platform_data, we allocated buttons dynamically. */
	if (!pdev->dev.platform_data)
		kfree(pdata->buttons);

	return error;
}

static int __devexit gpio_keys_remove(struct platform_device *pdev)
{
	struct gpio_keys_drvdata *ddata = platform_get_drvdata(pdev);
	struct input_dev *input = ddata->input;
	int i;

	sysfs_remove_group(&pdev->dev.kobj, &gpio_keys_attr_group);

	device_init_wakeup(&pdev->dev, 0);

	for (i = 0; i < ddata->n_buttons; i++)
		gpio_remove_key(&ddata->data[i]);

	input_unregister_device(input);

#ifdef CONFIG_SENSORS_HALL
	wake_lock_destroy(&ddata->flip_wake_lock);
#if defined CONFIG_SEC_MILLET_PROJECT || defined (CONFIG_SEC_BERLUTI_PROJECT) || defined (CONFIG_SEC_T8_PROJECT)
	regulator_disable(lvs1_1p8);
	regulator_put(lvs1_1p8);
#endif
#endif
	/*
	 * If we had no platform_data, we allocated buttons dynamically, and
	 * must free them here. ddata->data[0].button is the pointer to the
	 * beginning of the allocated array.
	 */
	if (!pdev->dev.platform_data)
		kfree(ddata->data[0].button);

	kfree(ddata);

	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int gpio_keys_suspend(struct device *dev)
{
	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
	int i;

	if (device_may_wakeup(dev)) {
		for (i = 0; i < ddata->n_buttons; i++) {
			struct gpio_button_data *bdata = &ddata->data[i];
			if (bdata->button->wakeup)
				enable_irq_wake(bdata->irq);
		}
#ifdef CONFIG_SENSORS_HALL
	if(ddata->gpio_flip_cover != 0) {
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
		if (!ddata->cover_state && ddata->gsm_area)
			disable_irq_wake(ddata->irq_flip_cover);
		else
#endif
			enable_irq_wake(ddata->irq_flip_cover);
	}
#endif
	}
		return 0;
}

static int gpio_keys_resume(struct device *dev)
{
	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
	int i;

	for (i = 0; i < ddata->n_buttons; i++) {
		struct gpio_button_data *bdata = &ddata->data[i];
		if (bdata->button->wakeup && device_may_wakeup(dev))
			disable_irq_wake(bdata->irq);

		if (gpio_is_valid(bdata->button->gpio))
		{
			if(!(bdata->button->code == 172))
				gpio_keys_gpio_report_event(bdata);
		}
	}
#ifdef CONFIG_SENSORS_HALL
	if (device_may_wakeup(dev) && ddata->gpio_flip_cover != 0) {
		disable_irq_wake(ddata->irq_flip_cover);
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
		if (ddata->cover_state && ddata->gsm_area)
			gpio_hall_irq_set(enable, false);
#endif
	}
#endif
	input_sync(ddata->input);

	return 0;
}
#endif

static SIMPLE_DEV_PM_OPS(gpio_keys_pm_ops, gpio_keys_suspend, gpio_keys_resume);

static struct platform_driver gpio_keys_device_driver = {
	.probe		= gpio_keys_probe,
	.remove		= __devexit_p(gpio_keys_remove),
	.driver		= {
		.name	= "gpio-keys",
		.owner	= THIS_MODULE,
		.pm	= &gpio_keys_pm_ops,
		.of_match_table = gpio_keys_of_match,
	}
};

static int __init gpio_keys_init(void)
{
	return platform_driver_register(&gpio_keys_device_driver);
}

static void __exit gpio_keys_exit(void)
{
	platform_driver_unregister(&gpio_keys_device_driver);
}

late_initcall(gpio_keys_init);
module_exit(gpio_keys_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Phil Blundell <pb@handhelds.org>");
MODULE_DESCRIPTION("Keyboard driver for GPIOs");
MODULE_ALIAS("platform:gpio-keys");