/*
 * max17050_fuelgauge.h
 * Samsung MAX17050 Fuel Gauge Header
 *
 * Copyright (C) 2012 Samsung Electronics, Inc.
 *
 * 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.
 *
 */

#ifndef __MAX17050_FUELGAUGE_H
#define __MAX17050_FUELGAUGE_H __FILE__

#include <linux/android_alarm.h>

/* Slave address should be shifted to the right 1bit.
 * R/W bit should NOT be included.
 */
#define SEC_FUELGAUGE_I2C_SLAVEADDR 0x36

#if defined(CONFIG_FUELGAUGE_MAX17050_VOLTAGE_TRACKING)
#define MAX17050_REG_STATUS		0x00
#define MAX17050_REG_VALRT_TH		0x01
#define MAX17050_REG_TALRT_TH		0x02
#define MAX17050_REG_SALRT_TH		0x03
#define MAX17050_REG_VCELL			0x09
#define MAX17050_REG_TEMPERATURE	0x08
#define MAX17050_REG_AVGVCELL		0x19
#define MAX17050_REG_CONFIG		0x1D
#define MAX17050_REG_VERSION		0x21
#define MAX17050_REG_LEARNCFG		0x28
#define MAX17050_REG_FILTERCFG	0x29
#define MAX17050_REG_MISCCFG		0x2B
#define MAX17050_REG_CGAIN		0x2E
#define MAX17050_REG_RCOMP		0x38
#define MAX17050_REG_VFOCV		0xFB
#define MAX17050_REG_SOC_VF		0xFF

struct sec_fg_info {
	bool dummy;
};

#endif

#if defined(CONFIG_FUELGAUGE_MAX17050_COULOMB_COUNTING)
#define PRINT_COUNT	10

/* Register address */
#define STATUS_REG				0x00
#define VALRT_THRESHOLD_REG	0x01
#define TALRT_THRESHOLD_REG	0x02
#define SALRT_THRESHOLD_REG	0x03
#define REMCAP_REP_REG			0x05
#define SOCREP_REG				0x06
#define TEMPERATURE_REG		0x08
#define VCELL_REG				0x09
#define CURRENT_REG				0x0A
#define AVG_CURRENT_REG		0x0B
#define SOCMIX_REG				0x0D
#define SOCAV_REG				0x0E
#define REMCAP_MIX_REG			0x0F
#define FULLCAP_REG				0x10
#define RFAST_REG				0x15
#define AVR_TEMPERATURE_REG	0x16
#define CYCLES_REG				0x17
#define DESIGNCAP_REG			0x18
#define AVR_VCELL_REG			0x19
#define CONFIG_REG				0x1D
#define REMCAP_AV_REG			0x1F
#define FULLCAP_NOM_REG		0x23
#define MISCCFG_REG				0x2B
#define RCOMP_REG				0x38
#define FSTAT_REG				0x3D
#define DQACC_REG				0x45
#define DPACC_REG				0x46
#define OCV_REG					0xEE
#define VFOCV_REG				0xFB
#define VFSOC_REG				0xFF

#define FG_LEVEL 0
#define FG_TEMPERATURE 1
#define FG_VOLTAGE 2
#define FG_CURRENT 3
#define FG_CURRENT_AVG 4
#define FG_CHECK_STATUS 5
#define FG_VF_SOC 6
#define FG_AV_SOC 7

#define LOW_BATT_COMP_RANGE_NUM	5
#define LOW_BATT_COMP_LEVEL_NUM	2
#define MAX_LOW_BATT_CHECK_CNT	10

enum {
	POSITIVE = 0,
	NEGATIVE,
};

enum {
	RANGE = 0,
	SLOPE,
	OFFSET,
	TABLE_MAX
};

#define CURRENT_RANGE_MAX_NUM	5
#define TEMP_RANGE_MAX_NUM	3

struct battery_data_t {
	u16 Capacity;
	u16 low_battery_comp_voltage;
	s32 low_battery_table[CURRENT_RANGE_MAX_NUM][TABLE_MAX];
	s32 temp_adjust_table[TEMP_RANGE_MAX_NUM][TABLE_MAX];
	u8	*type_str;
};

struct sec_fg_info {
	/* test print count */
	int pr_cnt;
	/* full charge comp */
	struct delayed_work	full_comp_work;
	u32 previous_fullcap;
	u32 previous_vffullcap;
	/* low battery comp */
	int low_batt_comp_cnt[LOW_BATT_COMP_RANGE_NUM][LOW_BATT_COMP_LEVEL_NUM];
	int low_batt_comp_flag;
	/* low battery boot */
	int low_batt_boot_flag;
	bool is_low_batt_alarm;

	/* battery info */
	u32 soc;

	/* miscellaneous */
	unsigned long fullcap_check_interval;
	int full_check_flag;
	bool is_first_check;
};

/* FullCap learning setting */
#define VFFULLCAP_CHECK_INTERVAL	300 /* sec */
/* soc should be 0.1% unit */
#define VFSOC_FOR_FULLCAP_LEARNING	950
#define LOW_CURRENT_FOR_FULLCAP_LEARNING	20
#define HIGH_CURRENT_FOR_FULLCAP_LEARNING	120
#define LOW_AVGCURRENT_FOR_FULLCAP_LEARNING	20
#define HIGH_AVGCURRENT_FOR_FULLCAP_LEARNING	100

/* power off margin */
/* soc should be 0.1% unit */
#define POWER_OFF_SOC_HIGH_MARGIN	20
#define POWER_OFF_VOLTAGE_HIGH_MARGIN	3500
#define POWER_OFF_VOLTAGE_LOW_MARGIN	3400

/* FG recovery handler */
/* soc should be 0.1% unit */
#define STABLE_LOW_BATTERY_DIFF	30
#define STABLE_LOW_BATTERY_DIFF_LOWBATT	10
#define LOW_BATTERY_SOC_REDUCE_UNIT	10
#endif

#endif /* __MAX17050_FUELGAUGE_H */