267 lines
6.3 KiB
C
267 lines
6.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Fuel gauge driver for Maxim 17042 / 8966 / 8997
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* Note that Maxim 8966 and 8997 are mfd and this is its subdevice.
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*
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* Copyright (C) 2011 Samsung Electronics
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* MyungJoo Ham <myungjoo.ham@samsung.com>
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*/
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#ifndef __MAX17042_BATTERY_H_
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#define __MAX17042_BATTERY_H_
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#define MAX17042_STATUS_BattAbsent (1 << 3)
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#define MAX17042_BATTERY_FULL (95) /* Recommend. FullSOCThr value */
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#define MAX17042_DEFAULT_SNS_RESISTOR (10000)
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#define MAX17042_DEFAULT_VMIN (3000)
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#define MAX17042_DEFAULT_VMAX (4500) /* LiHV cell max */
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#define MAX17042_DEFAULT_TEMP_MIN (0) /* For sys without temp sensor */
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#define MAX17042_DEFAULT_TEMP_MAX (700) /* 70 degrees Celcius */
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/* Consider RepCap which is less then 10 units below FullCAP full */
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#define MAX17042_FULL_THRESHOLD 10
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#define MAX17042_CHARACTERIZATION_DATA_SIZE 48
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enum max17042_register {
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MAX17042_STATUS = 0x00,
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MAX17042_VALRT_Th = 0x01,
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MAX17042_TALRT_Th = 0x02,
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MAX17042_SALRT_Th = 0x03,
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MAX17042_AtRate = 0x04,
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MAX17042_RepCap = 0x05,
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MAX17042_RepSOC = 0x06,
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MAX17042_Age = 0x07,
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MAX17042_TEMP = 0x08,
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MAX17042_VCELL = 0x09,
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MAX17042_Current = 0x0A,
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MAX17042_AvgCurrent = 0x0B,
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MAX17042_SOC = 0x0D,
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MAX17042_AvSOC = 0x0E,
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MAX17042_RemCap = 0x0F,
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MAX17042_FullCAP = 0x10,
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MAX17042_TTE = 0x11,
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MAX17042_V_empty = 0x12,
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MAX17042_RSLOW = 0x14,
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MAX17042_AvgTA = 0x16,
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MAX17042_Cycles = 0x17,
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MAX17042_DesignCap = 0x18,
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MAX17042_AvgVCELL = 0x19,
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MAX17042_MinMaxTemp = 0x1A,
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MAX17042_MinMaxVolt = 0x1B,
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MAX17042_MinMaxCurr = 0x1C,
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MAX17042_CONFIG = 0x1D,
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MAX17042_ICHGTerm = 0x1E,
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MAX17042_AvCap = 0x1F,
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MAX17042_ManName = 0x20,
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MAX17042_DevName = 0x21,
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MAX17042_FullCAPNom = 0x23,
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MAX17042_TempNom = 0x24,
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MAX17042_TempLim = 0x25,
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MAX17042_TempHot = 0x26,
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MAX17042_AIN = 0x27,
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MAX17042_LearnCFG = 0x28,
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MAX17042_FilterCFG = 0x29,
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MAX17042_RelaxCFG = 0x2A,
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MAX17042_MiscCFG = 0x2B,
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MAX17042_TGAIN = 0x2C,
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MAX17042_TOFF = 0x2D,
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MAX17042_CGAIN = 0x2E,
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MAX17042_COFF = 0x2F,
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MAX17042_MaskSOC = 0x32,
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MAX17042_SOC_empty = 0x33,
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MAX17042_T_empty = 0x34,
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MAX17042_FullCAP0 = 0x35,
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MAX17042_IAvg_empty = 0x36,
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MAX17042_FCTC = 0x37,
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MAX17042_RCOMP0 = 0x38,
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MAX17042_TempCo = 0x39,
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MAX17042_EmptyTempCo = 0x3A,
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MAX17042_K_empty0 = 0x3B,
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MAX17042_TaskPeriod = 0x3C,
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MAX17042_FSTAT = 0x3D,
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MAX17042_SHDNTIMER = 0x3F,
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MAX17042_dQacc = 0x45,
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MAX17042_dPacc = 0x46,
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MAX17042_VFSOC0 = 0x48,
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MAX17042_QH = 0x4D,
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MAX17042_QL = 0x4E,
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MAX17042_VFSOC0Enable = 0x60,
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MAX17042_MLOCKReg1 = 0x62,
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MAX17042_MLOCKReg2 = 0x63,
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MAX17042_MODELChrTbl = 0x80,
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MAX17042_OCV = 0xEE,
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MAX17042_OCVInternal = 0xFB, /* MAX17055 VFOCV */
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MAX17042_VFSOC = 0xFF,
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};
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/* Registers specific to max17055 only */
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enum max17055_register {
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MAX17055_QRes = 0x0C,
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MAX17055_RCell = 0x14,
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MAX17055_TTF = 0x20,
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MAX17055_DieTemp = 0x34,
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MAX17055_USER_MEM = 0x40,
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MAX17055_RGAIN = 0x43,
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MAX17055_ConvgCfg = 0x49,
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MAX17055_VFRemCap = 0x4A,
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MAX17055_STATUS2 = 0xB0,
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MAX17055_POWER = 0xB1,
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MAX17055_ID = 0xB2,
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MAX17055_AvgPower = 0xB3,
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MAX17055_IAlrtTh = 0xB4,
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MAX17055_TTFCfg = 0xB5,
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MAX17055_CVMixCap = 0xB6,
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MAX17055_CVHalfTime = 0xB7,
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MAX17055_CGTempCo = 0xB8,
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MAX17055_Curve = 0xB9,
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MAX17055_HibCfg = 0xBA,
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MAX17055_Config2 = 0xBB,
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MAX17055_VRipple = 0xBC,
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MAX17055_RippleCfg = 0xBD,
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MAX17055_TimerH = 0xBE,
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MAX17055_RSense = 0xD0,
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MAX17055_ScOcvLim = 0xD1,
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MAX17055_SOCHold = 0xD3,
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MAX17055_MaxPeakPwr = 0xD4,
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MAX17055_SusPeakPwr = 0xD5,
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MAX17055_PackResistance = 0xD6,
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MAX17055_SysResistance = 0xD7,
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MAX17055_MinSysV = 0xD8,
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MAX17055_MPPCurrent = 0xD9,
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MAX17055_SPPCurrent = 0xDA,
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MAX17055_ModelCfg = 0xDB,
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MAX17055_AtQResidual = 0xDC,
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MAX17055_AtTTE = 0xDD,
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MAX17055_AtAvSOC = 0xDE,
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MAX17055_AtAvCap = 0xDF,
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};
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/* Registers specific to max17047/50/55 */
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enum max17047_register {
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MAX17047_QRTbl00 = 0x12,
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MAX17047_FullSOCThr = 0x13,
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MAX17047_QRTbl10 = 0x22,
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MAX17047_QRTbl20 = 0x32,
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MAX17047_V_empty = 0x3A,
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MAX17047_TIMER = 0x3E,
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MAX17047_QRTbl30 = 0x42,
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};
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enum max170xx_chip_type {
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MAXIM_DEVICE_TYPE_UNKNOWN = 0,
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MAXIM_DEVICE_TYPE_MAX17042,
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MAXIM_DEVICE_TYPE_MAX17047,
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MAXIM_DEVICE_TYPE_MAX17050,
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MAXIM_DEVICE_TYPE_MAX17055,
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MAXIM_DEVICE_TYPE_NUM
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};
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/*
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* used for setting a register to a desired value
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* addr : address for a register
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* data : setting value for the register
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*/
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struct max17042_reg_data {
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u8 addr;
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u16 data;
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};
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struct max17042_config_data {
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/* External current sense resistor value in milli-ohms */
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u32 cur_sense_val;
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/* A/D measurement */
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u16 tgain; /* 0x2C */
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u16 toff; /* 0x2D */
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u16 cgain; /* 0x2E */
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u16 coff; /* 0x2F */
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/* Alert / Status */
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u16 valrt_thresh; /* 0x01 */
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u16 talrt_thresh; /* 0x02 */
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u16 soc_alrt_thresh; /* 0x03 */
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u16 config; /* 0x01D */
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u16 shdntimer; /* 0x03F */
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/* App data */
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u16 full_soc_thresh; /* 0x13 */
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u16 design_cap; /* 0x18 */
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u16 ichgt_term; /* 0x1E */
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/* MG3 config */
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u16 at_rate; /* 0x04 */
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u16 learn_cfg; /* 0x28 */
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u16 filter_cfg; /* 0x29 */
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u16 relax_cfg; /* 0x2A */
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u16 misc_cfg; /* 0x2B */
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u16 masksoc; /* 0x32 */
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/* MG3 save and restore */
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u16 fullcap; /* 0x10 */
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u16 fullcapnom; /* 0x23 */
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u16 socempty; /* 0x33 */
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u16 iavg_empty; /* 0x36 */
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u16 dqacc; /* 0x45 */
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u16 dpacc; /* 0x46 */
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u16 qrtbl00; /* 0x12 */
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u16 qrtbl10; /* 0x22 */
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u16 qrtbl20; /* 0x32 */
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u16 qrtbl30; /* 0x42 */
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/* Cell technology from power_supply.h */
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u16 cell_technology;
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/* Cell Data */
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u16 vempty; /* 0x12 */
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u16 temp_nom; /* 0x24 */
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u16 temp_lim; /* 0x25 */
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u16 fctc; /* 0x37 */
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u16 rcomp0; /* 0x38 */
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u16 tcompc0; /* 0x39 */
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u16 empty_tempco; /* 0x3A */
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u16 kempty0; /* 0x3B */
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u16 cell_char_tbl[MAX17042_CHARACTERIZATION_DATA_SIZE];
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} __packed;
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struct max17042_platform_data {
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struct max17042_reg_data *init_data;
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struct max17042_config_data *config_data;
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int num_init_data; /* Number of enties in init_data array */
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bool enable_current_sense;
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bool enable_por_init; /* Use POR init from Maxim appnote */
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/*
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* R_sns in micro-ohms.
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* default 10000 (if r_sns = 0) as it is the recommended value by
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* the datasheet although it can be changed by board designers.
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*/
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unsigned int r_sns;
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int vmin; /* in millivolts */
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int vmax; /* in millivolts */
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int temp_min; /* in tenths of degree Celsius */
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int temp_max; /* in tenths of degree Celsius */
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};
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#endif /* __MAX17042_BATTERY_H_ */
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