/*
*
* FocalTech TouchScreen driver.
*
* Copyright (c) 2012-2019, 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_gestrue.c
*
* Author: Focaltech Driver Team
*
* Created: 2016-08-08
*
* Abstract:
*
* Reference:
*
*****************************************************************************/
/*****************************************************************************
* 1.Included header files
*****************************************************************************/
#include "focaltech_core.h"
/******************************************************************************
* Private constant and macro definitions using #define
*****************************************************************************/
#define KEY_GESTURE_U KEY_U
#define KEY_GESTURE_UP KEY_UP
#define KEY_GESTURE_DOWN KEY_DOWN
#define KEY_GESTURE_LEFT KEY_LEFT
#define KEY_GESTURE_RIGHT KEY_RIGHT
#define KEY_GESTURE_O KEY_O
#define KEY_GESTURE_E KEY_E
#define KEY_GESTURE_M KEY_M
#define KEY_GESTURE_L KEY_L
#define KEY_GESTURE_W KEY_W
#define KEY_GESTURE_S KEY_S
#define KEY_GESTURE_V KEY_V
#define KEY_GESTURE_C KEY_C
#define KEY_GESTURE_Z KEY_Z
#define GESTURE_LEFT 0x20
#define GESTURE_RIGHT 0x21
#define GESTURE_UP 0x22
#define GESTURE_DOWN 0x23
#define GESTURE_DOUBLECLICK 0x24
#define GESTURE_O 0x30
#define GESTURE_W 0x31
#define GESTURE_M 0x32
#define GESTURE_E 0x33
#define GESTURE_L 0x44
#define GESTURE_S 0x46
#define GESTURE_V 0x54
#define GESTURE_Z 0x41
#define GESTURE_C 0x34
/*****************************************************************************
* Private enumerations, structures and unions using typedef
*****************************************************************************/
/*
* gesture_id - mean which gesture is recognised
* point_num - points number of this gesture
* coordinate_x - All gesture point x coordinate
* coordinate_y - All gesture point y coordinate
* mode - gesture enable/disable, need enable by host
* - 1:enable gesture function(default) 0:disable
* active - gesture work flag,
* always set 1 when suspend, set 0 when resume
*/
struct fts_gesture_st {
u8 gesture_id;
u8 point_num;
u16 coordinate_x[FTS_GESTURE_POINTS_MAX];
u16 coordinate_y[FTS_GESTURE_POINTS_MAX];
};
/*****************************************************************************
* Static variables
*****************************************************************************/
static struct fts_gesture_st fts_gesture_data;
/*****************************************************************************
* Global variable or extern global variabls/functions
*****************************************************************************/
/*****************************************************************************
* Static function prototypes
*****************************************************************************/
static ssize_t fts_gesture_show(
struct device *dev, struct device_attribute *attr, char *buf)
{
int count = 0;
u8 val = 0;
struct fts_ts_data *ts_data = fts_data;
mutex_lock(&ts_data->input_dev->mutex);
fts_read_reg(FTS_REG_GESTURE_EN, &val);
count = snprintf(buf, PAGE_SIZE, "Gesture Mode:%s\n",
ts_data->gesture_mode ? "On" : "Off");
count += snprintf(buf + count, PAGE_SIZE, "Reg(0xD0)=%d\n", val);
mutex_unlock(&ts_data->input_dev->mutex);
return count;
}
static ssize_t fts_gesture_store(
struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct fts_ts_data *ts_data = fts_data;
mutex_lock(&ts_data->input_dev->mutex);
if (FTS_SYSFS_ECHO_ON(buf)) {
FTS_DEBUG("enable gesture");
ts_data->gesture_mode = ENABLE;
} else if (FTS_SYSFS_ECHO_OFF(buf)) {
FTS_DEBUG("disable gesture");
ts_data->gesture_mode = DISABLE;
}
mutex_unlock(&ts_data->input_dev->mutex);
return count;
}
static ssize_t fts_gesture_buf_show(
struct device *dev, struct device_attribute *attr, char *buf)
{
int count = 0;
int i = 0;
struct input_dev *input_dev = fts_data->input_dev;
struct fts_gesture_st *gesture = &fts_gesture_data;
mutex_lock(&input_dev->mutex);
count = snprintf(buf, PAGE_SIZE, "Gesture ID:%d\n", gesture->gesture_id);
count += snprintf(buf + count, PAGE_SIZE, "Gesture PointNum:%d\n",
gesture->point_num);
count += snprintf(buf + count, PAGE_SIZE, "Gesture Points Buffer:\n");
/* save point data,max:6 */
for (i = 0; i < FTS_GESTURE_POINTS_MAX; i++) {
count += snprintf(buf + count, PAGE_SIZE, "%3d(%4d,%4d) ", i,
gesture->coordinate_x[i], gesture->coordinate_y[i]);
if ((i + 1) % 4 == 0)
count += snprintf(buf + count, PAGE_SIZE, "\n");
}
count += snprintf(buf + count, PAGE_SIZE, "\n");
mutex_unlock(&input_dev->mutex);
return count;
}
static ssize_t fts_gesture_buf_store(
struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
return -EPERM;
}
/* sysfs gesture node
* read example: cat fts_gesture_mode ---read gesture mode
* write example:echo 1 > fts_gesture_mode --- write gesture mode to 1
*
*/
static DEVICE_ATTR(fts_gesture_mode, S_IRUGO | S_IWUSR, fts_gesture_show,
fts_gesture_store);
/*
* read example: cat fts_gesture_buf --- read gesture buf
*/
static DEVICE_ATTR(fts_gesture_buf, S_IRUGO | S_IWUSR,
fts_gesture_buf_show, fts_gesture_buf_store);
static struct attribute *fts_gesture_mode_attrs[] = {
&dev_attr_fts_gesture_mode.attr,
&dev_attr_fts_gesture_buf.attr,
NULL,
};
static struct attribute_group fts_gesture_group = {
.attrs = fts_gesture_mode_attrs,
};
static int fts_create_gesture_sysfs(struct device *dev)
{
int ret = 0;
ret = sysfs_create_group(&dev->kobj, &fts_gesture_group);
if (ret) {
FTS_ERROR("gesture sys node create fail");
sysfs_remove_group(&dev->kobj, &fts_gesture_group);
return ret;
}
return 0;
}
static void fts_gesture_report(struct input_dev *input_dev, int gesture_id)
{
int gesture;
FTS_DEBUG("gesture_id:0x%x", gesture_id);
switch (gesture_id) {
case GESTURE_LEFT:
gesture = KEY_GESTURE_LEFT;
break;
case GESTURE_RIGHT:
gesture = KEY_GESTURE_RIGHT;
break;
case GESTURE_UP:
gesture = KEY_GESTURE_UP;
break;
case GESTURE_DOWN:
gesture = KEY_GESTURE_DOWN;
break;
case GESTURE_DOUBLECLICK:
gesture = KEY_POWER;
break;
case GESTURE_O:
gesture = KEY_GESTURE_O;
break;
case GESTURE_W:
gesture = KEY_GESTURE_W;
break;
case GESTURE_M:
gesture = KEY_GESTURE_M;
break;
case GESTURE_E:
gesture = KEY_GESTURE_E;
break;
case GESTURE_L:
gesture = KEY_GESTURE_L;
break;
case GESTURE_S:
gesture = KEY_GESTURE_S;
break;
case GESTURE_V:
gesture = KEY_GESTURE_V;
break;
case GESTURE_Z:
gesture = KEY_GESTURE_Z;
break;
case GESTURE_C:
gesture = KEY_GESTURE_C;
break;
default:
gesture = -1;
break;
}
/* report event key */
if (gesture != -1) {
FTS_DEBUG("Gesture Code=%d", gesture);
input_report_key(input_dev, gesture, 1);
input_sync(input_dev);
input_report_key(input_dev, gesture, 0);
input_sync(input_dev);
}
}
/*****************************************************************************
* Name: fts_gesture_readdata
* Brief: Read information about gesture: enable flag/gesture points..., if ges-
* ture enable, save gesture points' information, and report to OS.
* It will be called this function every intrrupt when FTS_GESTURE_EN = 1
*
* gesture data length: 1(enable) + 1(reserve) + 2(header) + 6 * 4
* Input: ts_data - global struct data
* data - gesture data buffer if non-flash, else NULL
* Output:
* Return: 0 - read gesture data successfully, the report data is gesture data
* 1 - tp not in suspend/gesture not enable in TP FW
* -Exx - error
*****************************************************************************/
int fts_gesture_readdata(struct fts_ts_data *ts_data, u8 *data)
{
int ret = 0;
int i = 0;
int index = 0;
u8 buf[FTS_GESTURE_DATA_LEN] = { 0 };
struct input_dev *input_dev = ts_data->input_dev;
struct fts_gesture_st *gesture = &fts_gesture_data;
if (!ts_data->suspended || !ts_data->gesture_mode) {
return 1;
}
ret = fts_read_reg(FTS_REG_GESTURE_EN, &buf[0]);
if ((ret < 0) || (buf[0] != ENABLE)) {
FTS_DEBUG("gesture not enable in fw, don't process gesture");
return 1;
}
buf[2] = FTS_REG_GESTURE_OUTPUT_ADDRESS;
ret = fts_read(&buf[2], 1, &buf[2], FTS_GESTURE_DATA_LEN - 2);
if (ret < 0) {
FTS_ERROR("read gesture header data fail");
return ret;
}
/* init variable before read gesture point */
memset(gesture->coordinate_x, 0, FTS_GESTURE_POINTS_MAX * sizeof(u16));
memset(gesture->coordinate_y, 0, FTS_GESTURE_POINTS_MAX * sizeof(u16));
gesture->gesture_id = buf[2];
gesture->point_num = buf[3];
FTS_DEBUG("gesture_id=%d, point_num=%d",
gesture->gesture_id, gesture->point_num);
/* save point data,max:6 */
for (i = 0; i < FTS_GESTURE_POINTS_MAX; i++) {
index = 4 * i + 4;
gesture->coordinate_x[i] = (u16)(((buf[0 + index] & 0x0F) << 8)
+ buf[1 + index]);
gesture->coordinate_y[i] = (u16)(((buf[2 + index] & 0x0F) << 8)
+ buf[3 + index]);
}
/* report gesture to OS */
fts_gesture_report(input_dev, gesture->gesture_id);
return 0;
}
void fts_gesture_recovery(struct fts_ts_data *ts_data)
{
if (ts_data->gesture_mode && ts_data->suspended) {
FTS_DEBUG("gesture recovery...");
fts_write_reg(0xD1, 0xFF);
fts_write_reg(0xD2, 0xFF);
fts_write_reg(0xD5, 0xFF);
fts_write_reg(0xD6, 0xFF);
fts_write_reg(0xD7, 0xFF);
fts_write_reg(0xD8, 0xFF);
fts_write_reg(FTS_REG_GESTURE_EN, ENABLE);
}
}
int fts_gesture_suspend(struct fts_ts_data *ts_data)
{
int i = 0;
u8 state = 0xFF;
FTS_FUNC_ENTER();
if (enable_irq_wake(ts_data->irq)) {
FTS_DEBUG("enable_irq_wake(irq:%d) fail", ts_data->irq);
}
for (i = 0; i < 5; i++) {
fts_write_reg(0xD1, 0xFF);
fts_write_reg(0xD2, 0xFF);
fts_write_reg(0xD5, 0xFF);
fts_write_reg(0xD6, 0xFF);
fts_write_reg(0xD7, 0xFF);
fts_write_reg(0xD8, 0xFF);
fts_write_reg(FTS_REG_GESTURE_EN, ENABLE);
msleep(1);
fts_read_reg(FTS_REG_GESTURE_EN, &state);
if (state == ENABLE)
break;
}
if (i >= 5)
FTS_ERROR("make IC enter into gesture(suspend) fail,state:%x", state);
else
FTS_INFO("Enter into gesture(suspend) successfully");
FTS_FUNC_EXIT();
return 0;
}
int fts_gesture_resume(struct fts_ts_data *ts_data)
{
int i = 0;
u8 state = 0xFF;
FTS_FUNC_ENTER();
if (disable_irq_wake(ts_data->irq)) {
FTS_DEBUG("disable_irq_wake(irq:%d) fail", ts_data->irq);
}
for (i = 0; i < 5; i++) {
fts_write_reg(FTS_REG_GESTURE_EN, DISABLE);
msleep(1);
fts_read_reg(FTS_REG_GESTURE_EN, &state);
if (state == DISABLE)
break;
}
if (i >= 5)
FTS_ERROR("make IC exit gesture(resume) fail,state:%x", state);
else
FTS_INFO("resume from gesture successfully");
FTS_FUNC_EXIT();
return 0;
}
int fts_gesture_init(struct fts_ts_data *ts_data)
{
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(ts_data->dev);
memset(&fts_gesture_data, 0, sizeof(struct fts_gesture_st));
ts_data->gesture_mode = FTS_GESTURE_EN;
FTS_FUNC_EXIT();
return 0;
}
int fts_gesture_exit(struct fts_ts_data *ts_data)
{
FTS_FUNC_ENTER();
sysfs_remove_group(&ts_data->dev->kobj, &fts_gesture_group);
FTS_FUNC_EXIT();
return 0;
}