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/*
* 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 (95) /* Recommend. FullSOCThr value */
#define MAX17042_DEFAULT_SNS_RESISTOR (10000)
#define MAX17042_DEFAULT_VMIN (3000)
#define MAX17042_DEFAULT_VMAX (4500) /* LiHV cell max */
#define MAX17042_DEFAULT_TEMP_MIN (0) /* For sys without temp sensor */
#define MAX17042_DEFAULT_TEMP_MAX (700) /* 70 degrees Celcius */
/* Consider RepCap which is less then 10 units below FullCAP full */
#define MAX17042_FULL_THRESHOLD 10
#define MAX17042_CHARACTERIZATION_DATA_SIZE 48
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_SOC = 0x0D,
MAX17042_AvSOC = 0x0E,
MAX17042_RemCap = 0x0F,
MAX17042_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_FullCAPNom = 0x23,
MAX17042_TempNom = 0x24,
MAX17042_TempLim = 0x25,
MAX17042_TempHot = 0x26,
MAX17042_AIN = 0x27,
MAX17042_LearnCFG = 0x28,
MAX17042_FilterCFG = 0x29,
MAX17042_RelaxCFG = 0x2A,
MAX17042_MiscCFG = 0x2B,
MAX17042_TGAIN = 0x2C,
MAx17042_TOFF = 0x2D,
MAX17042_CGAIN = 0x2E,
MAX17042_COFF = 0x2F,
MAX17042_MaskSOC = 0x32,
MAX17042_SOC_empty = 0x33,
MAX17042_T_empty = 0x34,
MAX17042_FullCAP0 = 0x35,
MAX17042_LAvg_empty = 0x36,
MAX17042_FCTC = 0x37,
MAX17042_RCOMP0 = 0x38,
MAX17042_TempCo = 0x39,
MAX17042_EmptyTempCo = 0x3A,
MAX17042_K_empty0 = 0x3B,
MAX17042_TaskPeriod = 0x3C,
MAX17042_FSTAT = 0x3D,
MAX17042_SHDNTIMER = 0x3F,
MAX17042_dQacc = 0x45,
MAX17042_dPacc = 0x46,
MAX17042_VFSOC0 = 0x48,
MAX17042_QH = 0x4D,
MAX17042_QL = 0x4E,
MAX17042_VFSOC0Enable = 0x60,
MAX17042_MLOCKReg1 = 0x62,
MAX17042_MLOCKReg2 = 0x63,
MAX17042_MODELChrTbl = 0x80,
MAX17042_OCV = 0xEE,
MAX17042_OCVInternal = 0xFB,
MAX17042_VFSOC = 0xFF,
};
/* Registers specific to max17047/50 */
enum max17047_register {
MAX17047_QRTbl00 = 0x12,
MAX17047_FullSOCThr = 0x13,
MAX17047_QRTbl10 = 0x22,
MAX17047_QRTbl20 = 0x32,
MAX17047_V_empty = 0x3A,
MAX17047_QRTbl30 = 0x42,
};
enum max170xx_chip_type {
MAXIM_DEVICE_TYPE_UNKNOWN = 0,
MAXIM_DEVICE_TYPE_MAX17042,
MAXIM_DEVICE_TYPE_MAX17047,
MAXIM_DEVICE_TYPE_MAX17050,
MAXIM_DEVICE_TYPE_NUM
};
/*
* 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_config_data {
/* External current sense resistor value in milli-ohms */
u32 cur_sense_val;
/* A/D measurement */
u16 tgain; /* 0x2C */
u16 toff; /* 0x2D */
u16 cgain; /* 0x2E */
u16 coff; /* 0x2F */
/* Alert / Status */
u16 valrt_thresh; /* 0x01 */
u16 talrt_thresh; /* 0x02 */
u16 soc_alrt_thresh; /* 0x03 */
u16 config; /* 0x01D */
u16 shdntimer; /* 0x03F */
/* App data */
u16 full_soc_thresh; /* 0x13 */
u16 design_cap; /* 0x18 */
u16 ichgt_term; /* 0x1E */
/* MG3 config */
u16 at_rate; /* 0x04 */
u16 learn_cfg; /* 0x28 */
u16 filter_cfg; /* 0x29 */
u16 relax_cfg; /* 0x2A */
u16 misc_cfg; /* 0x2B */
u16 masksoc; /* 0x32 */
/* MG3 save and restore */
u16 fullcap; /* 0x10 */
u16 fullcapnom; /* 0x23 */
u16 socempty; /* 0x33 */
u16 lavg_empty; /* 0x36 */
u16 dqacc; /* 0x45 */
u16 dpacc; /* 0x46 */
u16 qrtbl00; /* 0x12 */
u16 qrtbl10; /* 0x22 */
u16 qrtbl20; /* 0x32 */
u16 qrtbl30; /* 0x42 */
/* Cell technology from power_supply.h */
u16 cell_technology;
/* Cell Data */
u16 vempty; /* 0x12 */
u16 temp_nom; /* 0x24 */
u16 temp_lim; /* 0x25 */
u16 fctc; /* 0x37 */
u16 rcomp0; /* 0x38 */
u16 tcompc0; /* 0x39 */
u16 empty_tempco; /* 0x3A */
u16 kempty0; /* 0x3B */
u16 cell_char_tbl[MAX17042_CHARACTERIZATION_DATA_SIZE];
} __packed;
struct max17042_platform_data {
struct max17042_reg_data *init_data;
struct max17042_config_data *config_data;
int num_init_data; /* Number of enties in init_data array */
bool enable_current_sense;
bool enable_por_init; /* Use POR init from Maxim appnote */
/*
* 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;
int vmin; /* in millivolts */
int vmax; /* in millivolts */
int temp_min; /* in tenths of degree Celsius */
int temp_max; /* in tenths of degree Celsius */
};
#endif /* __MAX17042_BATTERY_H_ */
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