598 lines
20 KiB
C
598 lines
20 KiB
C
/*
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*
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* FocalTech TouchScreen driver.
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*
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* Copyright (c) 2012-2018, Focaltech Ltd. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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/*****************************************************************************
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*
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* File Name: focaltech_gestrue.c
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*
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* Author: Focaltech Driver Team
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*
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* Created: 2016-08-08
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*
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* Abstract:
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*
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* Reference:
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*
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*****************************************************************************/
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/*****************************************************************************
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* 1.Included header files
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*****************************************************************************/
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#include "focaltech_core.h"
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#if FTS_GESTURE_EN
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/******************************************************************************
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* Private constant and macro definitions using #define
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*****************************************************************************/
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#define KEY_GESTURE_U KEY_U
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#define KEY_GESTURE_UP KEY_UP
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#define KEY_GESTURE_DOWN KEY_DOWN
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#define KEY_GESTURE_LEFT KEY_LEFT
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#define KEY_GESTURE_RIGHT KEY_RIGHT
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#define KEY_GESTURE_O KEY_O
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#define KEY_GESTURE_E KEY_E
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#define KEY_GESTURE_M KEY_M
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#define KEY_GESTURE_L KEY_L
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#define KEY_GESTURE_W KEY_W
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#define KEY_GESTURE_S KEY_S
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#define KEY_GESTURE_V KEY_V
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#define KEY_GESTURE_C KEY_C
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#define KEY_GESTURE_Z KEY_Z
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#define GESTURE_LEFT 0x20
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#define GESTURE_RIGHT 0x21
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#define GESTURE_UP 0x22
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#define GESTURE_DOWN 0x23
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#define GESTURE_DOUBLECLICK 0x24
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#define GESTURE_O 0x30
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#define GESTURE_W 0x31
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#define GESTURE_M 0x32
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#define GESTURE_E 0x33
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#define GESTURE_L 0x44
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#define GESTURE_S 0x46
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#define GESTURE_V 0x54
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#define GESTURE_Z 0x41
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#define GESTURE_C 0x34
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#define FTS_GESTRUE_POINTS 6
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#define FTS_GESTRUE_POINTS_HEADER 2
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/*****************************************************************************
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* Private enumerations, structures and unions using typedef
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*****************************************************************************/
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/*
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* header - byte0:gesture id
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* byte1:pointnum
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* byte2~7:reserved
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* coordinate_x - All gesture point x coordinate
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* coordinate_y - All gesture point y coordinate
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* mode - 1:enable gesture function(default)
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* - 0:disable
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* active - 1:enter into gesture(suspend)
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* 0:gesture disable or resume
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*/
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struct fts_gesture_st {
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u8 header[FTS_GESTRUE_POINTS_HEADER];
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u16 coordinate_x[FTS_GESTRUE_POINTS];
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u16 coordinate_y[FTS_GESTRUE_POINTS];
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u8 mode; /*host driver enable gesture flag*/
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u8 active; /*gesture actutally work*/
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};
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/*****************************************************************************
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* Static variables
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*****************************************************************************/
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static struct fts_gesture_st fts_gesture_data;
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/*****************************************************************************
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* Global variable or extern global variabls/functions
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*****************************************************************************/
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/*****************************************************************************
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* Static function prototypes
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*****************************************************************************/
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static ssize_t fts_gesture_show(struct device *dev, struct device_attribute *attr, char *buf);
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static ssize_t fts_gesture_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
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static ssize_t fts_gesture_buf_show(struct device *dev, struct device_attribute *attr, char *buf);
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static ssize_t fts_gesture_buf_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
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/* sysfs gesture node
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* read example: cat fts_gesture_mode ---read gesture mode
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* write example:echo 01 > fts_gesture_mode ---write gesture mode to 01
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*
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*/
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static DEVICE_ATTR (fts_gesture_mode, S_IRUGO | S_IWUSR, fts_gesture_show, fts_gesture_store);
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/*
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* read example: cat fts_gesture_buf ---read gesture buf
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*/
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static DEVICE_ATTR (fts_gesture_buf, S_IRUGO | S_IWUSR, fts_gesture_buf_show, fts_gesture_buf_store);
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static struct attribute *fts_gesture_mode_attrs[] = {
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&dev_attr_fts_gesture_mode.attr,
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&dev_attr_fts_gesture_buf.attr,
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NULL,
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};
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static struct attribute_group fts_gesture_group = {
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.attrs = fts_gesture_mode_attrs,
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};
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/************************************************************************
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* Name: fts_gesture_show
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* Brief:
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* Input: device, device attribute, char buf
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* Output:
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* Return:
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***********************************************************************/
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static ssize_t fts_gesture_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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int count;
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u8 val;
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struct input_dev *input_dev = fts_data->input_dev;
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struct i2c_client *client = container_of(dev, struct i2c_client, dev);
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mutex_lock(&input_dev->mutex);
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fts_i2c_read_reg(client, FTS_REG_GESTURE_EN, &val);
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count = snprintf(buf, PAGE_SIZE, "Gesture Mode: %s\n", fts_gesture_data.mode ? "On" : "Off");
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count += snprintf(buf + count, PAGE_SIZE, "Reg(0xD0) = %d\n", val);
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mutex_unlock(&input_dev->mutex);
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return count;
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}
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/************************************************************************
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* Name: fts_gesture_store
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* Brief:
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* Input: device, device attribute, char buf, char count
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* Output:
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* Return:
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***********************************************************************/
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static ssize_t fts_gesture_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
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{
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struct input_dev *input_dev = fts_data->input_dev;
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mutex_lock(&input_dev->mutex);
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if (FTS_SYSFS_ECHO_ON(buf)) {
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FTS_INFO("[GESTURE]enable gesture");
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fts_gesture_data.mode = ENABLE;
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} else if (FTS_SYSFS_ECHO_OFF(buf)) {
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FTS_INFO("[GESTURE]disable gesture");
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fts_gesture_data.mode = DISABLE;
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}
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mutex_unlock(&input_dev->mutex);
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return count;
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}
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/************************************************************************
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* Name: fts_gesture_buf_show
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* Brief:
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* Input: device, device attribute, char buf
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* Output:
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* Return:
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***********************************************************************/
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static ssize_t fts_gesture_buf_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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int count;
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int i = 0;
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struct input_dev *input_dev = fts_data->input_dev;
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mutex_lock(&input_dev->mutex);
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count = snprintf(buf, PAGE_SIZE, "Gesture ID: 0x%x\n", fts_gesture_data.header[0]);
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count += snprintf(buf + count, PAGE_SIZE, "Gesture PointNum: %d\n", fts_gesture_data.header[1]);
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count += snprintf(buf + count, PAGE_SIZE, "Gesture Point Buf:\n");
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for (i = 0; i < fts_gesture_data.header[1]; i++) {
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count += snprintf(buf + count, PAGE_SIZE, "%3d(%4d,%4d) ", i, fts_gesture_data.coordinate_x[i], fts_gesture_data.coordinate_y[i]);
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if ((i + 1) % 4 == 0)
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count += snprintf(buf + count, PAGE_SIZE, "\n");
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}
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count += snprintf(buf + count, PAGE_SIZE, "\n");
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mutex_unlock(&input_dev->mutex);
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return count;
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}
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/************************************************************************
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* Name: fts_gesture_buf_store
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* Brief:
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* Input: device, device attribute, char buf, char count
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* Output:
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* Return:
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***********************************************************************/
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static ssize_t fts_gesture_buf_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
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{
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/* place holder for future use */
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return -EPERM;
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}
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/*****************************************************************************
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* Name: fts_create_gesture_sysfs
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* Brief:
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* Input:
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* Output:
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* Return: 0-success or others-error
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*****************************************************************************/
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int fts_create_gesture_sysfs(struct i2c_client *client)
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{
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int ret = 0;
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ret = sysfs_create_group(&client->dev.kobj, &fts_gesture_group);
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if ( ret != 0) {
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FTS_ERROR( "[GESTURE]fts_gesture_mode_group(sysfs) create failed!");
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sysfs_remove_group(&client->dev.kobj, &fts_gesture_group);
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return ret;
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}
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return 0;
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}
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/*****************************************************************************
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* Name: fts_gesture_report
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* Brief:
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* Input:
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* Output:
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* Return:
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*****************************************************************************/
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static void fts_gesture_report(struct input_dev *input_dev, int gesture_id)
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{
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int gesture;
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FTS_FUNC_ENTER();
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FTS_INFO("fts gesture_id==0x%x ", gesture_id);
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switch (gesture_id) {
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case GESTURE_LEFT:
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gesture = KEY_GESTURE_LEFT;
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break;
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case GESTURE_RIGHT:
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gesture = KEY_GESTURE_RIGHT;
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break;
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case GESTURE_UP:
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gesture = KEY_GESTURE_UP;
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break;
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case GESTURE_DOWN:
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gesture = KEY_GESTURE_DOWN;
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break;
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case GESTURE_DOUBLECLICK:
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gesture = KEY_GESTURE_U;
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break;
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case GESTURE_O:
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gesture = KEY_GESTURE_O;
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break;
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case GESTURE_W:
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gesture = KEY_GESTURE_W;
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break;
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case GESTURE_M:
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gesture = KEY_GESTURE_M;
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break;
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case GESTURE_E:
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gesture = KEY_GESTURE_E;
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break;
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case GESTURE_L:
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gesture = KEY_GESTURE_L;
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break;
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case GESTURE_S:
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gesture = KEY_GESTURE_S;
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break;
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case GESTURE_V:
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gesture = KEY_GESTURE_V;
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break;
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case GESTURE_Z:
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gesture = KEY_GESTURE_Z;
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break;
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case GESTURE_C:
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gesture = KEY_GESTURE_C;
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break;
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default:
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gesture = -1;
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break;
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}
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/* report event key */
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if (gesture != -1) {
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FTS_DEBUG("Gesture Code=%d", gesture);
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input_report_key(input_dev, gesture, 1);
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input_sync(input_dev);
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input_report_key(input_dev, gesture, 0);
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input_sync(input_dev);
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}
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FTS_FUNC_EXIT();
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}
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/************************************************************************
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* Name: fts_gesture_read_buffer
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* Brief: read data from TP register
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* Input:
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* Output:
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* Return: fail <0
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***********************************************************************/
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static int fts_gesture_read_buffer(struct i2c_client *client, u8 *buf, int read_bytes)
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{
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int remain_bytes;
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int ret;
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int i;
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if (read_bytes <= I2C_BUFFER_LENGTH_MAXINUM) {
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ret = fts_i2c_read(client, buf, 1, buf, read_bytes);
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} else {
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ret = fts_i2c_read(client, buf, 1, buf, I2C_BUFFER_LENGTH_MAXINUM);
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remain_bytes = read_bytes - I2C_BUFFER_LENGTH_MAXINUM;
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for (i = 1; remain_bytes > 0; i++) {
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if (remain_bytes <= I2C_BUFFER_LENGTH_MAXINUM)
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ret = fts_i2c_read(client, buf, 0, buf + I2C_BUFFER_LENGTH_MAXINUM * i, remain_bytes);
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else
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ret = fts_i2c_read(client, buf, 0, buf + I2C_BUFFER_LENGTH_MAXINUM * i, I2C_BUFFER_LENGTH_MAXINUM);
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remain_bytes -= I2C_BUFFER_LENGTH_MAXINUM;
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}
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}
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return ret;
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}
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/************************************************************************
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* Name: fts_gesture_readdata
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* Brief: read data from TP register
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* Input:
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* Output:
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* Return: return 0 if succuss, otherwise reture error code
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***********************************************************************/
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int fts_gesture_readdata(struct fts_ts_data *ts_data)
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{
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u8 buf[FTS_GESTRUE_POINTS * 4] = { 0 };
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int ret = 0;
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int i = 0;
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int gestrue_id = 0;
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int read_bytes = 0;
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u8 pointnum;
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u8 state;
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struct i2c_client *client = ts_data->client;
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struct input_dev *input_dev = ts_data->input_dev;
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if (!ts_data->suspended) {
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return -EINVAL;
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}
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ret = fts_i2c_read_reg(client, FTS_REG_GESTURE_EN, &state);
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if ((ret < 0) || (state != ENABLE)) {
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FTS_DEBUG("gesture not enable, don't process gesture");
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return -EIO;
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}
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/* init variable before read gesture point */
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memset(fts_gesture_data.header, 0, FTS_GESTRUE_POINTS_HEADER);
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memset(fts_gesture_data.coordinate_x, 0, FTS_GESTRUE_POINTS * sizeof(u16));
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memset(fts_gesture_data.coordinate_y, 0, FTS_GESTRUE_POINTS * sizeof(u16));
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buf[0] = FTS_REG_GESTURE_OUTPUT_ADDRESS;
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ret = fts_i2c_read(client, buf, 1, buf, FTS_GESTRUE_POINTS_HEADER);
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if (ret < 0) {
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FTS_ERROR("[GESTURE]Read gesture header data failed!!");
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FTS_FUNC_EXIT();
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return ret;
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}
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memcpy(fts_gesture_data.header, buf, FTS_GESTRUE_POINTS_HEADER);
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gestrue_id = buf[0];
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pointnum = buf[1];
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read_bytes = ((int)pointnum) * 4 + FTS_GESTRUE_POINTS_HEADER;
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buf[0] = FTS_REG_GESTURE_OUTPUT_ADDRESS;
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FTS_DEBUG("[GESTURE]PointNum=%d", pointnum);
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if (pointnum > FTS_GESTRUE_POINTS) {
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FTS_ERROR("[GESTURE]gesture point number(%d) fail");
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return -EIO;
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}
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ret = fts_gesture_read_buffer(client, buf, read_bytes);
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if (ret < 0) {
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FTS_ERROR("[GESTURE]Read gesture touch data failed!!");
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FTS_FUNC_EXIT();
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return ret;
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}
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fts_gesture_report(input_dev, gestrue_id);
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for (i = 0; i < pointnum; i++) {
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fts_gesture_data.coordinate_x[i] = (((s16) buf[0 + (4 * i + 2)]) & 0x0F) << 8
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| (((s16) buf[1 + (4 * i + 2)]) & 0xFF);
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fts_gesture_data.coordinate_y[i] = (((s16) buf[2 + (4 * i + 2)]) & 0x0F) << 8
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| (((s16) buf[3 + (4 * i + 2)]) & 0xFF);
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}
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return 0;
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}
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/*****************************************************************************
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* Name: fts_gesture_recovery
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* Brief: recovery gesture state when reset or power on
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* Input:
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* Output:
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* Return:
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*****************************************************************************/
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void fts_gesture_recovery(struct i2c_client *client)
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{
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if ((ENABLE == fts_gesture_data.mode) && (ENABLE == fts_gesture_data.active)) {
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FTS_INFO("enter fts_gesture_recovery");
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fts_i2c_write_reg(client, 0xD1, 0xff);
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fts_i2c_write_reg(client, 0xD2, 0xff);
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fts_i2c_write_reg(client, 0xD5, 0xff);
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fts_i2c_write_reg(client, 0xD6, 0xff);
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fts_i2c_write_reg(client, 0xD7, 0xff);
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fts_i2c_write_reg(client, 0xD8, 0xff);
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fts_i2c_write_reg(client, FTS_REG_GESTURE_EN, ENABLE);
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}
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}
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/*****************************************************************************
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* Name: fts_gesture_suspend
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* Brief:
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* Input:
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* Output:
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* Return: return 0 if succuss, otherwise return error code
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*****************************************************************************/
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int fts_gesture_suspend(struct i2c_client *client)
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{
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int ret;
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int i;
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u8 state;
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FTS_INFO("gesture suspend...");
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/* gesture not enable, return immediately */
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if (fts_gesture_data.mode == DISABLE) {
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FTS_INFO("gesture is disabled");
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return -EINVAL;
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}
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for (i = 0; i < 5; i++) {
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fts_i2c_write_reg(client, 0xd1, 0xff);
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fts_i2c_write_reg(client, 0xd2, 0xff);
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fts_i2c_write_reg(client, 0xd5, 0xff);
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fts_i2c_write_reg(client, 0xd6, 0xff);
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fts_i2c_write_reg(client, 0xd7, 0xff);
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fts_i2c_write_reg(client, 0xd8, 0xff);
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fts_i2c_write_reg(client, FTS_REG_GESTURE_EN, ENABLE);
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msleep(1);
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fts_i2c_read_reg(client, FTS_REG_GESTURE_EN, &state);
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if (state == ENABLE)
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break;
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}
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if (i >= 5) {
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FTS_ERROR("[GESTURE]Enter into gesture(suspend) failed!\n");
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fts_gesture_data.active = DISABLE;
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return -EIO;
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}
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ret = enable_irq_wake(fts_data->irq);
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if (ret) {
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FTS_INFO("enable_irq_wake(irq:%d) failed", fts_data->irq);
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}
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fts_gesture_data.active = ENABLE;
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FTS_INFO("[GESTURE]Enter into gesture(suspend) successfully!");
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FTS_FUNC_EXIT();
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return 0;
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}
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/*****************************************************************************
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* Name: fts_gesture_resume
|
|
* Brief:
|
|
* Input:
|
|
* Output:
|
|
* Return: return 0 if succuss, otherwise return error code
|
|
*****************************************************************************/
|
|
int fts_gesture_resume(struct i2c_client *client)
|
|
{
|
|
int ret;
|
|
int i;
|
|
u8 state;
|
|
|
|
FTS_INFO("gesture resume...");
|
|
/* gesture not enable, return immediately */
|
|
if (fts_gesture_data.mode == DISABLE) {
|
|
FTS_DEBUG("gesture is disabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (fts_gesture_data.active == DISABLE) {
|
|
FTS_DEBUG("gesture in suspend is failed, no running fts_gesture_resume");
|
|
return -EINVAL;
|
|
}
|
|
|
|
fts_gesture_data.active = DISABLE;
|
|
for (i = 0; i < 5; i++) {
|
|
fts_i2c_write_reg(client, FTS_REG_GESTURE_EN, DISABLE);
|
|
msleep(1);
|
|
fts_i2c_read_reg(client, FTS_REG_GESTURE_EN, &state);
|
|
if (state == DISABLE)
|
|
break;
|
|
}
|
|
|
|
if (i >= 5) {
|
|
FTS_ERROR("[GESTURE]Clear gesture(resume) failed!\n");
|
|
return -EIO;
|
|
}
|
|
|
|
ret = disable_irq_wake(fts_data->irq);
|
|
if (ret) {
|
|
FTS_INFO("disable_irq_wake(irq:%d) failed", fts_data->irq);
|
|
}
|
|
|
|
FTS_INFO("[GESTURE]resume from gesture successfully!");
|
|
FTS_FUNC_EXIT();
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* Name: fts_gesture_init
|
|
* Brief:
|
|
* Input:
|
|
* Output:
|
|
* Return:
|
|
*****************************************************************************/
|
|
int fts_gesture_init(struct fts_ts_data *ts_data)
|
|
{
|
|
struct i2c_client *client = ts_data->client;
|
|
struct input_dev *input_dev = ts_data->input_dev;
|
|
|
|
FTS_FUNC_ENTER();
|
|
input_set_capability(input_dev, EV_KEY, KEY_POWER);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_U);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_UP);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_DOWN);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_LEFT);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_RIGHT);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_O);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_E);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_M);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_L);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_W);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_S);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_V);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_Z);
|
|
input_set_capability(input_dev, EV_KEY, KEY_GESTURE_C);
|
|
|
|
__set_bit(KEY_GESTURE_RIGHT, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_LEFT, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_UP, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_DOWN, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_U, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_O, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_E, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_M, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_W, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_L, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_S, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_V, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_C, input_dev->keybit);
|
|
__set_bit(KEY_GESTURE_Z, input_dev->keybit);
|
|
|
|
fts_create_gesture_sysfs(client);
|
|
fts_gesture_data.mode = ENABLE;
|
|
fts_gesture_data.active = DISABLE;
|
|
|
|
FTS_FUNC_EXIT();
|
|
return 0;
|
|
}
|
|
|
|
/************************************************************************
|
|
* Name: fts_gesture_exit
|
|
* Brief: call when driver removed
|
|
* Input:
|
|
* Output:
|
|
* Return:
|
|
***********************************************************************/
|
|
int fts_gesture_exit(struct i2c_client *client)
|
|
{
|
|
FTS_FUNC_ENTER();
|
|
sysfs_remove_group(&client->dev.kobj, &fts_gesture_group);
|
|
FTS_FUNC_EXIT();
|
|
return 0;
|
|
}
|
|
#endif
|