/*
 * Fuel gauge driver for Maxim 17042 / 8966 / 8997
 *  Note that Maxim 8966 and 8997 are mfd and this is its subdevice.
 *
 * Copyright (C) 2011 Samsung Electronics
 * MyungJoo Ham <myungjoo.ham@samsung.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef __MAX17042_BATTERY_H_
#define __MAX17042_BATTERY_H_

#define MAX17042_STATUS_BattAbsent	(1 << 3)
#define MAX17042_BATTERY_FULL	(100)
#define MAX17042_DEFAULT_SNS_RESISTOR	(10000)

enum max17042_register {
	MAX17042_STATUS		= 0x00,
	MAX17042_VALRT_Th	= 0x01,
	MAX17042_TALRT_Th	= 0x02,
	MAX17042_SALRT_Th	= 0x03,
	MAX17042_AtRate		= 0x04,
	MAX17042_RepCap		= 0x05,
	MAX17042_RepSOC		= 0x06,
	MAX17042_Age		= 0x07,
	MAX17042_TEMP		= 0x08,
	MAX17042_VCELL		= 0x09,
	MAX17042_Current	= 0x0A,
	MAX17042_AvgCurrent	= 0x0B,
	MAX17042_Qresidual	= 0x0C,
	MAX17042_SOC		= 0x0D,
	MAX17042_AvSOC		= 0x0E,
	MAX17042_RemCap		= 0x0F,
	MAX17402_FullCAP	= 0x10,
	MAX17042_TTE		= 0x11,
	MAX17042_V_empty	= 0x12,

	MAX17042_RSLOW		= 0x14,

	MAX17042_AvgTA		= 0x16,
	MAX17042_Cycles		= 0x17,
	MAX17042_DesignCap	= 0x18,
	MAX17042_AvgVCELL	= 0x19,
	MAX17042_MinMaxTemp	= 0x1A,
	MAX17042_MinMaxVolt	= 0x1B,
	MAX17042_MinMaxCurr	= 0x1C,
	MAX17042_CONFIG		= 0x1D,
	MAX17042_ICHGTerm	= 0x1E,
	MAX17042_AvCap		= 0x1F,
	MAX17042_ManName	= 0x20,
	MAX17042_DevName	= 0x21,
	MAX17042_DevChem	= 0x22,

	MAX17042_TempNom	= 0x24,
	MAX17042_TempCold	= 0x25,
	MAX17042_TempHot	= 0x26,
	MAX17042_AIN		= 0x27,
	MAX17042_LearnCFG	= 0x28,
	MAX17042_SHFTCFG	= 0x29,
	MAX17042_RelaxCFG	= 0x2A,
	MAX17042_MiscCFG	= 0x2B,
	MAX17042_TGAIN		= 0x2C,
	MAx17042_TOFF		= 0x2D,
	MAX17042_CGAIN		= 0x2E,
	MAX17042_COFF		= 0x2F,

	MAX17042_Q_empty	= 0x33,
	MAX17042_T_empty	= 0x34,

	MAX17042_RCOMP0		= 0x38,
	MAX17042_TempCo		= 0x39,
	MAX17042_Rx		= 0x3A,
	MAX17042_T_empty0	= 0x3B,
	MAX17042_TaskPeriod	= 0x3C,
	MAX17042_FSTAT		= 0x3D,

	MAX17042_SHDNTIMER	= 0x3F,

	MAX17042_VFRemCap	= 0x4A,

	MAX17042_QH		= 0x4D,
	MAX17042_QL		= 0x4E,
};

/*
 * used for setting a register to a desired value
 * addr : address for a register
 * data : setting value for the register
 */
struct max17042_reg_data {
	u8 addr;
	u16 data;
};

struct max17042_platform_data {
	struct max17042_reg_data *init_data;
	int num_init_data; /* Number of enties in init_data array */
	bool enable_current_sense;

	/*
	 * R_sns in micro-ohms.
	 * default 10000 (if r_sns = 0) as it is the recommended value by
	 * the datasheet although it can be changed by board designers.
	 */
	unsigned int r_sns;
};

#endif /* __MAX17042_BATTERY_H_ */
