/**
 * @file ft6x36_i2c.h
 * @brief
 *
 * Copyright (c) 2021 Bouffalolab team
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 */
#ifndef _FT6X36_I2C_H
#define _FT6X36_I2C_H

#include "bflb_core.h"
#include "touch.h"

#define FT6236_I2C_SLAVE_ADDR 0x38

/* Maximum border values of the touchscreen pad that the chip can handle */
#define FT6X36_MAX_WIDTH  ((uint16_t)800)
#define FT6X36_MAX_HEIGHT ((uint16_t)480)

/* Max detectable simultaneous touch points */
#define FT6X36_I2C_MAX_POINT 2

/* Register of the current mode */
#define FT6X36_DEV_MODE_REG 0x00

/* Possible modes as of FT6X36_DEV_MODE_REG */
#define FT6X36_DEV_MODE_WORKING 0x00
#define FT6X36_DEV_MODE_FACTORY 0x04

#define FT6X36_DEV_MODE_MASK  0x70
#define FT6X36_DEV_MODE_SHIFT 4

/* Gesture ID register */
#define FT6X36_GEST_ID_REG 0x01

/* Possible values returned by FT6X36_GEST_ID_REG */
#define FT6X36_GEST_ID_NO_GESTURE 0x00
#define FT6X36_GEST_ID_MOVE_UP    0x10
#define FT6X36_GEST_ID_MOVE_RIGHT 0x14
#define FT6X36_GEST_ID_MOVE_DOWN  0x18
#define FT6X36_GEST_ID_MOVE_LEFT  0x1C
#define FT6X36_GEST_ID_ZOOM_IN    0x48
#define FT6X36_GEST_ID_ZOOM_OUT   0x49

/* Status register: stores number of active touch points (0, 1, 2) */
#define FT6X36_TD_STAT_REG   0x02
#define FT6X36_TD_STAT_MASK  0x0F
#define FT6X36_TD_STAT_SHIFT 0x00

/* Touch events */
#define FT6X36_TOUCH_EVT_FLAG_PRESS_DOWN 0x00
#define FT6X36_TOUCH_EVT_FLAG_LIFT_UP    0x01
#define FT6X36_TOUCH_EVT_FLAG_CONTACT    0x02
#define FT6X36_TOUCH_EVT_FLAG_NO_EVENT   0x03

#define FT6X36_TOUCH_EVT_FLAG_SHIFT 6
#define FT6X36_TOUCH_EVT_FLAG_MASK  (3 << FT6X36_TOUCH_EVT_FLAG_SHIFT)

#define FT6X36_MSB_MASK  0x0F
#define FT6X36_MSB_SHIFT 0
#define FT6X36_LSB_MASK  0xFF
#define FT6X36_LSB_SHIFT 0

#define FT6X36_P1_XH_REG 0x03
#define FT6X36_P1_XL_REG 0x04
#define FT6X36_P1_YH_REG 0x05
#define FT6X36_P1_YL_REG 0x06

#define FT6X36_P1_WEIGHT_REG      0x07 /* Register reporting touch pressure - read only */
#define FT6X36_TOUCH_WEIGHT_MASK  0xFF
#define FT6X36_TOUCH_WEIGHT_SHIFT 0

#define FT6X36_P1_MISC_REG 0x08 /* Touch area register */

#define FT6X36_TOUCH_AREA_MASK  (0x04 << 4) /* Values related to FT6X36_Pn_MISC_REG */
#define FT6X36_TOUCH_AREA_SHIFT 0x04

#define FT6X36_P2_XH_REG     0x09
#define FT6X36_P2_XL_REG     0x0A
#define FT6X36_P2_YH_REG     0x0B
#define FT6X36_P2_YL_REG     0x0C
#define FT6X36_P2_WEIGHT_REG 0x0D
#define FT6X36_P2_MISC_REG   0x0E

/* Threshold for touch detection */
#define FT6X36_TH_GROUP_REG    0x80
#define FT6X36_THRESHOLD_MASK  0xFF /* Values FT6X36_TH_GROUP_REG : threshold related  */
#define FT6X36_THRESHOLD_SHIFT 0

#define FT6X36_TH_DIFF_REG 0x85 /* Filter function coefficients */

#define FT6X36_CTRL_REG 0x86 /* Control register */

#define FT6X36_CTRL_KEEP_ACTIVE_MODE              0x00 /* Will keep the Active mode when there is no touching */
#define FT6X36_CTRL_KEEP_AUTO_SWITCH_MONITOR_MODE 0x01 /* Switching from Active mode to Monitor mode automatically when there is no touching */

#define FT6X36_TIME_ENTER_MONITOR_REG 0x87 /* The time period of switching from Active mode to Monitor mode when there is no touching */

#define FT6X36_PERIOD_ACTIVE_REG  0x88 /* Report rate in Active mode */
#define FT6X36_PERIOD_MONITOR_REG 0x89 /* Report rate in Monitor mode */

#define FT6X36_RADIAN_VALUE_REG 0x91 /* The value of the minimum allowed angle while Rotating gesture mode */

#define FT6X36_OFFSET_LEFT_RIGHT_REG 0x92 /* Maximum offset while Moving Left and Moving Right gesture */
#define FT6X36_OFFSET_UP_DOWN_REG    0x93 /* Maximum offset while Moving Up and Moving Down gesture */

#define FT6X36_DISTANCE_LEFT_RIGHT_REG 0x94 /* Minimum distance while Moving Left and Moving Right gesture */
#define FT6X36_DISTANCE_UP_DOWN_REG    0x95 /* Minimum distance while Moving Up and Moving Down gesture */

#define FT6X36_LIB_VER_H_REG 0xA1 /* High 8-bit of LIB Version info */
#define FT6X36_LIB_VER_L_REG 0xA2 /* Low 8-bit of LIB Version info */

#define FT6X36_CHIPSELECT_REG 0xA3 /* 0x36 for ft6236; 0x06 for ft6206 */

#define FT6X36_POWER_MODE_REG  0xA5
#define FT6X36_FIRMWARE_ID_REG 0xA6
#define FT6X36_RELEASECODE_REG 0xAF
#define FT6X36_PANEL_ID_REG    0xA8
#define FT6X36_OPMODE_REG      0xBC

int ft6x36_i2c_init(touch_coord_t *max_value);
int ft6x36_i2c_get_gesture_id();
int ft6x36_i2c_read(uint8_t *point_num, touch_coord_t *touch_coord, uint8_t max_num);

#endif /* __FT6X36_H */