1 /* 2 * Fuel gauge driver for Maxim 17042 / 8966 / 8997 3 * Note that Maxim 8966 and 8997 are mfd and this is its subdevice. 4 * 5 * Copyright (C) 2011 Samsung Electronics 6 * MyungJoo Ham <myungjoo.ham@samsung.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 */ 22 23 #ifndef __MAX17042_BATTERY_H_ 24 #define __MAX17042_BATTERY_H_ 25 26 #define MAX17042_STATUS_BattAbsent (1 << 3) 27 #define MAX17042_BATTERY_FULL (95) /* Recommend. FullSOCThr value */ 28 #define MAX17042_DEFAULT_SNS_RESISTOR (10000) 29 #define MAX17042_DEFAULT_VMIN (3000) 30 #define MAX17042_DEFAULT_VMAX (4500) /* LiHV cell max */ 31 #define MAX17042_DEFAULT_TEMP_MIN (0) /* For sys without temp sensor */ 32 #define MAX17042_DEFAULT_TEMP_MAX (700) /* 70 degrees Celcius */ 33 34 /* Consider RepCap which is less then 10 units below FullCAP full */ 35 #define MAX17042_FULL_THRESHOLD 10 36 37 #define MAX17042_CHARACTERIZATION_DATA_SIZE 48 38 39 enum max17042_register { 40 MAX17042_STATUS = 0x00, 41 MAX17042_VALRT_Th = 0x01, 42 MAX17042_TALRT_Th = 0x02, 43 MAX17042_SALRT_Th = 0x03, 44 MAX17042_AtRate = 0x04, 45 MAX17042_RepCap = 0x05, 46 MAX17042_RepSOC = 0x06, 47 MAX17042_Age = 0x07, 48 MAX17042_TEMP = 0x08, 49 MAX17042_VCELL = 0x09, 50 MAX17042_Current = 0x0A, 51 MAX17042_AvgCurrent = 0x0B, 52 53 MAX17042_SOC = 0x0D, 54 MAX17042_AvSOC = 0x0E, 55 MAX17042_RemCap = 0x0F, 56 MAX17042_FullCAP = 0x10, 57 MAX17042_TTE = 0x11, 58 MAX17042_V_empty = 0x12, 59 60 MAX17042_RSLOW = 0x14, 61 62 MAX17042_AvgTA = 0x16, 63 MAX17042_Cycles = 0x17, 64 MAX17042_DesignCap = 0x18, 65 MAX17042_AvgVCELL = 0x19, 66 MAX17042_MinMaxTemp = 0x1A, 67 MAX17042_MinMaxVolt = 0x1B, 68 MAX17042_MinMaxCurr = 0x1C, 69 MAX17042_CONFIG = 0x1D, 70 MAX17042_ICHGTerm = 0x1E, 71 MAX17042_AvCap = 0x1F, 72 MAX17042_ManName = 0x20, 73 MAX17042_DevName = 0x21, 74 75 MAX17042_FullCAPNom = 0x23, 76 MAX17042_TempNom = 0x24, 77 MAX17042_TempLim = 0x25, 78 MAX17042_TempHot = 0x26, 79 MAX17042_AIN = 0x27, 80 MAX17042_LearnCFG = 0x28, 81 MAX17042_FilterCFG = 0x29, 82 MAX17042_RelaxCFG = 0x2A, 83 MAX17042_MiscCFG = 0x2B, 84 MAX17042_TGAIN = 0x2C, 85 MAx17042_TOFF = 0x2D, 86 MAX17042_CGAIN = 0x2E, 87 MAX17042_COFF = 0x2F, 88 89 MAX17042_MaskSOC = 0x32, 90 MAX17042_SOC_empty = 0x33, 91 MAX17042_T_empty = 0x34, 92 93 MAX17042_FullCAP0 = 0x35, 94 MAX17042_LAvg_empty = 0x36, 95 MAX17042_FCTC = 0x37, 96 MAX17042_RCOMP0 = 0x38, 97 MAX17042_TempCo = 0x39, 98 MAX17042_EmptyTempCo = 0x3A, 99 MAX17042_K_empty0 = 0x3B, 100 MAX17042_TaskPeriod = 0x3C, 101 MAX17042_FSTAT = 0x3D, 102 103 MAX17042_SHDNTIMER = 0x3F, 104 105 MAX17042_dQacc = 0x45, 106 MAX17042_dPacc = 0x46, 107 108 MAX17042_VFSOC0 = 0x48, 109 110 MAX17042_QH = 0x4D, 111 MAX17042_QL = 0x4E, 112 113 MAX17042_VFSOC0Enable = 0x60, 114 MAX17042_MLOCKReg1 = 0x62, 115 MAX17042_MLOCKReg2 = 0x63, 116 117 MAX17042_MODELChrTbl = 0x80, 118 119 MAX17042_OCV = 0xEE, 120 121 MAX17042_OCVInternal = 0xFB, 122 123 MAX17042_VFSOC = 0xFF, 124 }; 125 126 /* Registers specific to max17047/50 */ 127 enum max17047_register { 128 MAX17047_QRTbl00 = 0x12, 129 MAX17047_FullSOCThr = 0x13, 130 MAX17047_QRTbl10 = 0x22, 131 MAX17047_QRTbl20 = 0x32, 132 MAX17047_V_empty = 0x3A, 133 MAX17047_QRTbl30 = 0x42, 134 }; 135 136 enum max170xx_chip_type { 137 MAXIM_DEVICE_TYPE_UNKNOWN = 0, 138 MAXIM_DEVICE_TYPE_MAX17042, 139 MAXIM_DEVICE_TYPE_MAX17047, 140 MAXIM_DEVICE_TYPE_MAX17050, 141 142 MAXIM_DEVICE_TYPE_NUM 143 }; 144 145 /* 146 * used for setting a register to a desired value 147 * addr : address for a register 148 * data : setting value for the register 149 */ 150 struct max17042_reg_data { 151 u8 addr; 152 u16 data; 153 }; 154 155 struct max17042_config_data { 156 /* External current sense resistor value in milli-ohms */ 157 u32 cur_sense_val; 158 159 /* A/D measurement */ 160 u16 tgain; /* 0x2C */ 161 u16 toff; /* 0x2D */ 162 u16 cgain; /* 0x2E */ 163 u16 coff; /* 0x2F */ 164 165 /* Alert / Status */ 166 u16 valrt_thresh; /* 0x01 */ 167 u16 talrt_thresh; /* 0x02 */ 168 u16 soc_alrt_thresh; /* 0x03 */ 169 u16 config; /* 0x01D */ 170 u16 shdntimer; /* 0x03F */ 171 172 /* App data */ 173 u16 full_soc_thresh; /* 0x13 */ 174 u16 design_cap; /* 0x18 */ 175 u16 ichgt_term; /* 0x1E */ 176 177 /* MG3 config */ 178 u16 at_rate; /* 0x04 */ 179 u16 learn_cfg; /* 0x28 */ 180 u16 filter_cfg; /* 0x29 */ 181 u16 relax_cfg; /* 0x2A */ 182 u16 misc_cfg; /* 0x2B */ 183 u16 masksoc; /* 0x32 */ 184 185 /* MG3 save and restore */ 186 u16 fullcap; /* 0x10 */ 187 u16 fullcapnom; /* 0x23 */ 188 u16 socempty; /* 0x33 */ 189 u16 lavg_empty; /* 0x36 */ 190 u16 dqacc; /* 0x45 */ 191 u16 dpacc; /* 0x46 */ 192 u16 qrtbl00; /* 0x12 */ 193 u16 qrtbl10; /* 0x22 */ 194 u16 qrtbl20; /* 0x32 */ 195 u16 qrtbl30; /* 0x42 */ 196 197 /* Cell technology from power_supply.h */ 198 u16 cell_technology; 199 200 /* Cell Data */ 201 u16 vempty; /* 0x12 */ 202 u16 temp_nom; /* 0x24 */ 203 u16 temp_lim; /* 0x25 */ 204 u16 fctc; /* 0x37 */ 205 u16 rcomp0; /* 0x38 */ 206 u16 tcompc0; /* 0x39 */ 207 u16 empty_tempco; /* 0x3A */ 208 u16 kempty0; /* 0x3B */ 209 u16 cell_char_tbl[MAX17042_CHARACTERIZATION_DATA_SIZE]; 210 } __packed; 211 212 struct max17042_platform_data { 213 struct max17042_reg_data *init_data; 214 struct max17042_config_data *config_data; 215 int num_init_data; /* Number of enties in init_data array */ 216 bool enable_current_sense; 217 bool enable_por_init; /* Use POR init from Maxim appnote */ 218 219 /* 220 * R_sns in micro-ohms. 221 * default 10000 (if r_sns = 0) as it is the recommended value by 222 * the datasheet although it can be changed by board designers. 223 */ 224 unsigned int r_sns; 225 int vmin; /* in millivolts */ 226 int vmax; /* in millivolts */ 227 int temp_min; /* in tenths of degree Celsius */ 228 int temp_max; /* in tenths of degree Celsius */ 229 }; 230 231 #endif /* __MAX17042_BATTERY_H_ */ 232
