/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2021 MediaTek Inc.
*/

#ifndef _ACCDET_H_
#define _ACCDET_H_

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/vmalloc.h>
#include <linux/platform_device.h>
#include <linux/miscdevice.h>
#include <linux/wait.h>
#include <linux/spinlock.h>
#include <linux/ctype.h>

#include <linux/semaphore.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/workqueue.h>
#include <linux/delay.h>

#include <linux/device.h>
#include <linux/kdev_t.h>
#include <linux/fs.h>
#include <linux/cdev.h>
#include <linux/uaccess.h>
#include <linux/kthread.h>
#include <linux/input.h>
#include <linux/time.h>

#include <linux/string.h>


#define ACCDET_DEVNAME "accdet"

/****** SW ENV define *************************************/
#define PMIC_ACCDET_KERNEL         1
#define PMIC_ACCDET_CTP            0

#define PMIC_ACCDET_DEBUG          0
#define PMIC_ACCDET_SUPPORT

#define NO_KEY	(0x0)
#define UP_KEY	(0x01)
#define MD_KEY	(0x02)
#define DW_KEY	(0x04)
#define AS_KEY	(0x08)

#define HEADSET_MODE_1	(1)
#define HEADSET_MODE_2	(2)
#define HEADSET_MODE_6	(6)

/* IOCTL */
#define ACCDET_IOC_MAGIC 'A'
#define ACCDET_INIT _IO(ACCDET_IOC_MAGIC, 0)
#define SET_CALL_STATE _IO(ACCDET_IOC_MAGIC, 1)
#define GET_BUTTON_STATUS _IO(ACCDET_IOC_MAGIC, 2)

/* 400us, Accdet irq clear timeout  */
#define ACCDET_TIME_OUT 0x61A80

/* cable type  recognized by accdet, and report to WiredAccessoryManager */
enum accdet_report_state {
	NO_DEVICE = 0,
	HEADSET_MIC = 1,
	HEADSET_NO_MIC = 2,
	HEADSET_FIVE_POLE = 3,
	LINE_OUT_DEVICE = 4,
};

/* accdet status got from accdet FSM  */
enum accdet_status {
	PLUG_OUT = 0,
	MIC_BIAS = 1,
	HOOK_SWITCH = 2,
	BI_MIC_BIAS = 3,
	LINE_OUT = 4,
	STAND_BY = 5
};

/* EINT state when moisture enable  */
enum eint_moisture_status {
	M_PLUG_IN = 0,
	M_WATER_IN = 1,
	M_HP_PLUG_IN = 2,
	M_PLUG_OUT = 3,
	M_NO_ACT = 4,
	M_UNKNOWN = 5,
};

struct three_key_threshold {
	unsigned int mid;
	unsigned int up;
	unsigned int down;
};
struct four_key_threshold {
	unsigned int mid;
	unsigned int voice;
	unsigned int up;
	unsigned int down;
};

struct pwm_deb_settings {
	unsigned int pwm_width;
	unsigned int pwm_thresh;
	unsigned int fall_delay;
	unsigned int rise_delay;
	/* state00, 3pole | hook switch */
	unsigned int debounce0;
	/* state01, mic bias debounce */
	unsigned int debounce1;
	/* state11, plug out debounce */
	unsigned int debounce3;
	/* auxadc debounce */
	unsigned int debounce4;
	/* new, eint cmpmem pwm */
	unsigned int eint_pwm_width;
	unsigned int eint_pwm_thresh;
	unsigned int eint_debounce0;
	unsigned int eint_debounce1;
	unsigned int eint_debounce2;
	unsigned int eint_debounce3;
	unsigned int eint_inverter_debounce;

};

struct head_dts_data {
	/* set mic bias voltage set: 0x02,1.9V;0x07,2.7V */
	unsigned int mic_vol;
	/* set mic bias mode:1,ACC;2,DCC,without internal bias;
	 * 6,DCC,with internal bias
	 */
	unsigned int mic_mode;
	/* set the plugout debounce */
	unsigned int plugout_deb;
	/* eint0&eint1  polarity,LEVEL_HIGH(4); LEVEL_LOW(8);
	 * EDGE_FALLING(2); EDGE_RISING(1)
	 */
	unsigned int eint_pol;
	struct pwm_deb_settings pwm_deb;
	struct three_key_threshold three_key;
	struct four_key_threshold four_key;
	unsigned int moisture_detect_enable;
	unsigned int eint_detect_mode;
	unsigned int eint_use_ext_res;
	unsigned int eint_comp_vth;
	unsigned int moisture_detect_mode;
	unsigned int moisture_comp_vth;
	unsigned int moisture_comp_vref2;
	unsigned int moisture_use_ext_res;
};

enum {
	accdet_state000 = 0, /* accdet_state + [reserved,A,B] */
	accdet_state001,
	accdet_state010,
	accdet_state011,
	accdet_auxadc,
	eint_state000,
	eint_state001,
	eint_state010,
	eint_state011,
	eint_inverter_state000,
};

#if PMIC_ACCDET_CTP
extern kal_bool plug_out_headset_debounce_test_enable;
extern kal_bool headset_debounce_test_enable;
extern kal_uint16 debounce0_test[];
extern kal_uint16 debounce1_test[];
extern kal_uint16 debounce3_test[];
extern kal_uint16 debounce4_test[];

extern kal_uint16 debounce_index;
extern kal_uint16 adjust_eint_debounce03;
extern kal_uint16 adjust_eint_debounce12;
extern kal_uint16 eint_invert_debounce_index;
extern kal_uint16 mic_vol;
extern kal_uint16 mic_mode;
extern kal_uint16 eint_pwm_width;
extern kal_uint16 eint_pwm_thresh;
extern kal_uint16 moisture_detect_enable;
extern kal_uint16 eint_detect_mode;
extern kal_uint16 moisture_detect_mode;
extern kal_uint16 eint_use_ext_res;
extern kal_uint16 moisture_comp_vth;
extern kal_uint16 moisture_comp_vref2;
extern kal_uint16 moisture_use_ext_res;
extern kal_uint16 water_r_t;
extern kal_uint16 moisture_ext_r_t;
extern kal_uint16 moisture_int_r_t;
#endif

extern const struct of_device_id accdet_of_match[];
/* just be called by audio module */
extern int accdet_read_audio_res(unsigned int res_value);
/* just be called by audio module for DC trim */
extern void accdet_late_init(unsigned long data);
extern void accdet_modify_vref_volt(void);
extern const struct file_operations *accdet_get_fops(void);
extern struct platform_driver accdet_driver_func(void);
extern void mt_accdet_remove(void);
extern void mt_accdet_suspend(void);
extern void mt_accdet_resume(void);
extern void accdet_set_debounce(int state, unsigned int debounce);
extern int mt_accdet_probe(struct platform_device *dev);
extern signed int pwrap_read(unsigned int adr, unsigned int *rdata);
extern signed int pwrap_write(unsigned int adr, unsigned int  wdata);
long mt_accdet_unlocked_ioctl(struct file *file,
	unsigned int cmd, unsigned long arg);

#endif