drivers/input/touchscreen/focaltech_touch/focaltech_ex_mode.c

/*
 *
 * FocalTech ftxxxx TouchScreen driver.
 *
 * Copyright (c) 2010-2016, Focaltech Ltd. All rights reserved.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * 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.
 *
 */

/*****************************************************************************
*
* File Name: focaltech_ex_mode.c
*
*    Author: Liu WeiGuang
*
*   Created: 2016-08-31
*
*  Abstract:
*
* Reference:
*
*****************************************************************************/

/*****************************************************************************
* 1.Included header files
*****************************************************************************/
#include "focaltech_core.h"

/*****************************************************************************
* 2.Private constant and macro definitions using #define
*****************************************************************************/

/*****************************************************************************
* 3.Private enumerations, structures and unions using typedef
*****************************************************************************/
struct fts_mode_flag {
	int fts_glove_mode_flag;
	int fts_cover_mode_flag;
	int fts_charger_mode_flag;
};

struct fts_mode_flag g_fts_mode_flag;

/*****************************************************************************
* 4.Static variables
*****************************************************************************/

/*****************************************************************************
* 5.Global variable or extern global variabls/functions
*****************************************************************************/
int fts_enter_glove_mode(struct i2c_client *client, int mode);
int fts_glove_init(struct i2c_client *client);
int fts_glove_exit(struct i2c_client *client);

int fts_enter_cover_mode(struct i2c_client *client, int mode);
int fts_cover_init(struct i2c_client *client);
int fts_cover_exit(struct i2c_client *client);

int fts_enter_charger_mode(struct i2c_client *client, int mode);
int fts_charger_init(struct i2c_client *client);
int fts_charger_exit(struct i2c_client *client);

/*****************************************************************************
* 6.Static function prototypes
*******************************************************************************/

#if FTS_GLOVE_EN
static ssize_t fts_touch_glove_show(struct device *dev,
				    struct device_attribute *attr, char *buf)
{
	return snprintf(buf, PAGE_SIZE, "Glove: %s\n",
			g_fts_mode_flag.fts_glove_mode_flag ? "On" : "Off");
}

static ssize_t fts_touch_glove_store(struct device *dev,
				     struct device_attribute *attr,
				     const char *buf, size_t count)
{
	int ret;

	if (FTS_SYSFS_ECHO_ON(buf)) {
		if (!g_fts_mode_flag.fts_glove_mode_flag) {
			FTS_INFO("[Mode]enter glove mode");
			ret = fts_enter_glove_mode(fts_i2c_client, true);
			if (ret >= 0)
				g_fts_mode_flag.fts_glove_mode_flag = true;
		}
	} else if (FTS_SYSFS_ECHO_OFF(buf)) {
		if (g_fts_mode_flag.fts_glove_mode_flag) {
			FTS_INFO("[Mode]exit glove mode");
			ret = fts_enter_glove_mode(fts_i2c_client, false);
			if (ret >= 0)
				g_fts_mode_flag.fts_glove_mode_flag = false;
		}
	}
	FTS_INFO("[Mode]glove mode status:  %d",
		 g_fts_mode_flag.fts_glove_mode_flag);
	return count;
}

/************************************************************************
* Name: fts_enter_glove_mode
* Brief:  change glove mode
* Input:  glove mode
* Output: no
* Return: success >=0, otherwise failed
***********************************************************************/
int fts_enter_glove_mode(struct i2c_client *client, int mode)
{
	int ret = 0;
	static u8 buf_addr[2] = { 0 };
	static u8 buf_value[2] = { 0 };

	buf_addr[0] = FTS_REG_GLOVE_MODE_EN;

	if (mode)
		buf_value[0] = 0x01;
	else
		buf_value[0] = 0x00;

	ret = fts_i2c_write_reg(client, buf_addr[0], buf_value[0]);
	if (ret < 0)
		FTS_ERROR("[Mode]fts_enter_glove_mode write value fail");

	return ret;

}

/* read and write glove mode
*   read example: cat  fts_touch_glove_mode---read  glove mode
*   write example:echo 01 > fts_touch_glove_mode ---write glove mode to 01
*
*/
static DEVICE_ATTR(fts_glove_mode, S_IRUGO | S_IWUSR, fts_touch_glove_show,
		   fts_touch_glove_store);

#endif

#if FTS_COVER_EN
static ssize_t fts_touch_cover_show(struct device *dev,
				    struct device_attribute *attr, char *buf)
{
	return snprintf(buf, PAGE_SIZE, "Cover: %s\n",
			g_fts_mode_flag.fts_cover_mode_flag ? "On" : "Off");
}

static ssize_t fts_touch_cover_store(struct device *dev,
				     struct device_attribute *attr,
				     const char *buf, size_t count)
{
	int ret;

	if (FTS_SYSFS_ECHO_ON(buf)) {
		if (!g_fts_mode_flag.fts_cover_mode_flag) {
			FTS_INFO("[Mode]enter cover mode");
			ret = fts_enter_cover_mode(fts_i2c_client, true);
			if (ret >= 0)
				g_fts_mode_flag.fts_cover_mode_flag = true;
		}
	} else if (FTS_SYSFS_ECHO_OFF(buf)) {
		if (g_fts_mode_flag.fts_cover_mode_flag) {
			FTS_INFO("[Mode]exit cover mode");
			ret = fts_enter_cover_mode(fts_i2c_client, false);
			if (ret >= 0)
				g_fts_mode_flag.fts_cover_mode_flag = false;
		}
	}
	FTS_INFO("[Mode]cover mode status:  %d",
		 g_fts_mode_flag.fts_cover_mode_flag);
	return count;
}

/************************************************************************
* Name: fts_enter_cover_mode
* Brief:  change cover mode
* Input:  cover mode
* Output: no
* Return: success >=0, otherwise failed
***********************************************************************/
int fts_enter_cover_mode(struct i2c_client *client, int mode)
{
	int ret = 0;
	static u8 buf_addr[2] = { 0 };
	static u8 buf_value[2] = { 0 };

	buf_addr[0] = FTS_REG_COVER_MODE_EN;

	if (mode)
		buf_value[0] = 0x01;
	else
		buf_value[0] = 0x00;

	ret = fts_i2c_write_reg(client, buf_addr[0], buf_value[0]);
	if (ret < 0)
		FTS_ERROR("[Mode] fts_enter_cover_mode write value fail\n");

	return ret;

}

/* read and write cover mode
*   read example: cat  fts_touch_cover_mode---read  cover mode
*   write example:echo 01 > fts_touch_cover_mode ---write cover mode to 01
*
*/
static DEVICE_ATTR(fts_cover_mode, S_IRUGO | S_IWUSR, fts_touch_cover_show,
		   fts_touch_cover_store);

#endif

#if FTS_CHARGER_EN
static ssize_t fts_touch_charger_show(struct device *dev,
				      struct device_attribute *attr, char *buf)
{
	return snprintf(buf, PAGE_SIZE, "Charger: %s\n",
			g_fts_mode_flag.fts_charger_mode_flag ? "On" : "Off");
}

static ssize_t fts_touch_charger_store(struct device *dev,
				       struct device_attribute *attr,
				       const char *buf, size_t count)
{
	int ret;

	if (FTS_SYSFS_ECHO_ON(buf)) {
		if (!g_fts_mode_flag.fts_charger_mode_flag) {
			FTS_INFO("[Mode]enter charger mode");
			ret = fts_enter_charger_mode(fts_i2c_client, true);
			if (ret >= 0)
				g_fts_mode_flag.fts_charger_mode_flag = true;
		}
	} else if (FTS_SYSFS_ECHO_OFF(buf)) {
		if (g_fts_mode_flag.fts_charger_mode_flag) {
			FTS_INFO("[Mode]exit charger mode");
			ret = fts_enter_charger_mode(fts_i2c_client, false);
			if (ret >= 0)
				g_fts_mode_flag.fts_charger_mode_flag = false;
		}
	}
	FTS_INFO("[Mode]charger mode status: %d",
		 g_fts_mode_flag.fts_charger_mode_flag);
	return count;
}

/************************************************************************
* Name: fts_enter_charger_mode
* Brief:  change charger mode
* Input:  charger mode
* Output: no
* Return: success >=0, otherwise failed
***********************************************************************/
int fts_enter_charger_mode(struct i2c_client *client, int mode)
{
	int ret = 0;
	static u8 buf_addr[2] = { 0 };
	static u8 buf_value[2] = { 0 };

	buf_addr[0] = FTS_REG_CHARGER_MODE_EN;

	if (mode)
		buf_value[0] = 0x01;
	else
		buf_value[0] = 0x00;

	ret = fts_i2c_write_reg(client, buf_addr[0], buf_value[0]);
	if (ret < 0)
		FTS_DEBUG("[Mode]fts_enter_charger_mode write value fail");

	return ret;

}

/* read and write charger mode
*   read example: cat  fts_touch_charger_mode---read  charger mode
*   write example:echo 01 > fts_touch_charger_mode ---write charger mode to 01
*
*/
static DEVICE_ATTR(fts_charger_mode, S_IRUGO | S_IWUSR, fts_touch_charger_show,
		   fts_touch_charger_store);

#endif

static struct attribute *fts_touch_mode_attrs[] = {
#if FTS_GLOVE_EN
	&dev_attr_fts_glove_mode.attr,
#endif

#if FTS_COVER_EN
	&dev_attr_fts_cover_mode.attr,
#endif

#if FTS_CHARGER_EN
	&dev_attr_fts_charger_mode.attr,
#endif

	NULL,
};

static struct attribute_group fts_touch_mode_group = {
	.attrs = fts_touch_mode_attrs,
};

int fts_ex_mode_init(struct i2c_client *client)
{
	int err = 0;

	g_fts_mode_flag.fts_glove_mode_flag = false;
	g_fts_mode_flag.fts_cover_mode_flag = false;
	g_fts_mode_flag.fts_charger_mode_flag = false;

	err = sysfs_create_group(&client->dev.kobj, &fts_touch_mode_group);
	if (0 != err) {
		FTS_ERROR("[Mode]create sysfs failed.");
		sysfs_remove_group(&client->dev.kobj, &fts_touch_mode_group);
		return -EIO;
	}

	FTS_DEBUG("[Mode]create sysfs succeeded");

	return err;

}

int fts_ex_mode_exit(struct i2c_client *client)
{
	sysfs_remove_group(&client->dev.kobj, &fts_touch_mode_group);
	return 0;
}

int fts_ex_mode_recovery(struct i2c_client *client)
{
	int ret = 0;
#if FTS_GLOVE_EN
	if (g_fts_mode_flag.fts_glove_mode_flag)
		ret = fts_enter_glove_mode(client, true);
#endif

#if FTS_COVER_EN
	if (g_fts_mode_flag.fts_cover_mode_flag)
		ret = fts_enter_cover_mode(client, true);
#endif

#if FTS_CHARGER_EN
	if (g_fts_mode_flag.fts_charger_mode_flag)
		ret = fts_enter_charger_mode(client, true);
#endif

	return ret;
}