1// SPDX-License-Identifier: GPL-2.0 2/* 3 * BQ27xxx battery driver 4 * 5 * Copyright (C) 2008 Rodolfo Giometti <giometti@linux.it> 6 * Copyright (C) 2008 Eurotech S.p.A. <info@eurotech.it> 7 * Copyright (C) 2010-2011 Lars-Peter Clausen <lars@metafoo.de> 8 * Copyright (C) 2011 Pali Rohár <pali@kernel.org> 9 * Copyright (C) 2017 Liam Breck <kernel@networkimprov.net> 10 * 11 * Based on a previous work by Copyright (C) 2008 Texas Instruments, Inc. 12 * 13 * Datasheets: 14 * https://www.ti.com/product/bq27000 15 * https://www.ti.com/product/bq27200 16 * https://www.ti.com/product/bq27010 17 * https://www.ti.com/product/bq27210 18 * https://www.ti.com/product/bq27500 19 * https://www.ti.com/product/bq27510-g1 20 * https://www.ti.com/product/bq27510-g2 21 * https://www.ti.com/product/bq27510-g3 22 * https://www.ti.com/product/bq27520-g1 23 * https://www.ti.com/product/bq27520-g2 24 * https://www.ti.com/product/bq27520-g3 25 * https://www.ti.com/product/bq27520-g4 26 * https://www.ti.com/product/bq27530-g1 27 * https://www.ti.com/product/bq27531-g1 28 * https://www.ti.com/product/bq27541-g1 29 * https://www.ti.com/product/bq27542-g1 30 * https://www.ti.com/product/bq27546-g1 31 * https://www.ti.com/product/bq27742-g1 32 * https://www.ti.com/product/bq27545-g1 33 * https://www.ti.com/product/bq27421-g1 34 * https://www.ti.com/product/bq27425-g1 35 * https://www.ti.com/product/bq27426 36 * https://www.ti.com/product/bq27411-g1 37 * https://www.ti.com/product/bq27441-g1 38 * https://www.ti.com/product/bq27621-g1 39 * https://www.ti.com/product/bq27z561 40 * https://www.ti.com/product/bq28z610 41 * https://www.ti.com/product/bq34z100-g1 42 */ 43 44#include <linux/device.h> 45#include <linux/module.h> 46#include <linux/mutex.h> 47#include <linux/param.h> 48#include <linux/jiffies.h> 49#include <linux/workqueue.h> 50#include <linux/delay.h> 51#include <linux/platform_device.h> 52#include <linux/power_supply.h> 53#include <linux/slab.h> 54#include <linux/of.h> 55 56#include <linux/power/bq27xxx_battery.h> 57 58#define BQ27XXX_MANUFACTURER "Texas Instruments" 59 60/* BQ27XXX Flags */ 61#define BQ27XXX_FLAG_DSC BIT(0) 62#define BQ27XXX_FLAG_SOCF BIT(1) /* State-of-Charge threshold final */ 63#define BQ27XXX_FLAG_SOC1 BIT(2) /* State-of-Charge threshold 1 */ 64#define BQ27XXX_FLAG_CFGUP BIT(4) 65#define BQ27XXX_FLAG_FC BIT(9) 66#define BQ27XXX_FLAG_OTD BIT(14) 67#define BQ27XXX_FLAG_OTC BIT(15) 68#define BQ27XXX_FLAG_UT BIT(14) 69#define BQ27XXX_FLAG_OT BIT(15) 70 71/* BQ27000 has different layout for Flags register */ 72#define BQ27000_FLAG_EDVF BIT(0) /* Final End-of-Discharge-Voltage flag */ 73#define BQ27000_FLAG_EDV1 BIT(1) /* First End-of-Discharge-Voltage flag */ 74#define BQ27000_FLAG_CI BIT(4) /* Capacity Inaccurate flag */ 75#define BQ27000_FLAG_FC BIT(5) 76#define BQ27000_FLAG_CHGS BIT(7) /* Charge state flag */ 77 78/* BQ27Z561 has different layout for Flags register */ 79#define BQ27Z561_FLAG_FDC BIT(4) /* Battery fully discharged */ 80#define BQ27Z561_FLAG_FC BIT(5) /* Battery fully charged */ 81#define BQ27Z561_FLAG_DIS_CH BIT(6) /* Battery is discharging */ 82 83/* control register params */ 84#define BQ27XXX_SEALED 0x20 85#define BQ27XXX_SET_CFGUPDATE 0x13 86#define BQ27XXX_SOFT_RESET 0x42 87#define BQ27XXX_RESET 0x41 88 89#define BQ27XXX_RS (20) /* Resistor sense mOhm */ 90#define BQ27XXX_POWER_CONSTANT (29200) /* 29.2 µV^2 * 1000 */ 91#define BQ27XXX_CURRENT_CONSTANT (3570) /* 3.57 µV * 1000 */ 92 93#define INVALID_REG_ADDR 0xff 94 95/* 96 * bq27xxx_reg_index - Register names 97 * 98 * These are indexes into a device's register mapping array. 99 */ 100 101enum bq27xxx_reg_index { 102 BQ27XXX_REG_CTRL = 0, /* Control */ 103 BQ27XXX_REG_TEMP, /* Temperature */ 104 BQ27XXX_REG_INT_TEMP, /* Internal Temperature */ 105 BQ27XXX_REG_VOLT, /* Voltage */ 106 BQ27XXX_REG_AI, /* Average Current */ 107 BQ27XXX_REG_FLAGS, /* Flags */ 108 BQ27XXX_REG_TTE, /* Time-to-Empty */ 109 BQ27XXX_REG_TTF, /* Time-to-Full */ 110 BQ27XXX_REG_TTES, /* Time-to-Empty Standby */ 111 BQ27XXX_REG_TTECP, /* Time-to-Empty at Constant Power */ 112 BQ27XXX_REG_NAC, /* Nominal Available Capacity */ 113 BQ27XXX_REG_FCC, /* Full Charge Capacity */ 114 BQ27XXX_REG_CYCT, /* Cycle Count */ 115 BQ27XXX_REG_AE, /* Available Energy */ 116 BQ27XXX_REG_SOC, /* State-of-Charge */ 117 BQ27XXX_REG_DCAP, /* Design Capacity */ 118 BQ27XXX_REG_AP, /* Average Power */ 119 BQ27XXX_DM_CTRL, /* Block Data Control */ 120 BQ27XXX_DM_CLASS, /* Data Class */ 121 BQ27XXX_DM_BLOCK, /* Data Block */ 122 BQ27XXX_DM_DATA, /* Block Data */ 123 BQ27XXX_DM_CKSUM, /* Block Data Checksum */ 124 BQ27XXX_REG_MAX, /* sentinel */ 125}; 126 127#define BQ27XXX_DM_REG_ROWS \ 128 [BQ27XXX_DM_CTRL] = 0x61, \ 129 [BQ27XXX_DM_CLASS] = 0x3e, \ 130 [BQ27XXX_DM_BLOCK] = 0x3f, \ 131 [BQ27XXX_DM_DATA] = 0x40, \ 132 [BQ27XXX_DM_CKSUM] = 0x60 133 134/* Register mappings */ 135static u8 136 bq27000_regs[BQ27XXX_REG_MAX] = { 137 [BQ27XXX_REG_CTRL] = 0x00, 138 [BQ27XXX_REG_TEMP] = 0x06, 139 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 140 [BQ27XXX_REG_VOLT] = 0x08, 141 [BQ27XXX_REG_AI] = 0x14, 142 [BQ27XXX_REG_FLAGS] = 0x0a, 143 [BQ27XXX_REG_TTE] = 0x16, 144 [BQ27XXX_REG_TTF] = 0x18, 145 [BQ27XXX_REG_TTES] = 0x1c, 146 [BQ27XXX_REG_TTECP] = 0x26, 147 [BQ27XXX_REG_NAC] = 0x0c, 148 [BQ27XXX_REG_FCC] = 0x12, 149 [BQ27XXX_REG_CYCT] = 0x2a, 150 [BQ27XXX_REG_AE] = 0x22, 151 [BQ27XXX_REG_SOC] = 0x0b, 152 [BQ27XXX_REG_DCAP] = 0x76, 153 [BQ27XXX_REG_AP] = 0x24, 154 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR, 155 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR, 156 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR, 157 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR, 158 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR, 159 }, 160 bq27010_regs[BQ27XXX_REG_MAX] = { 161 [BQ27XXX_REG_CTRL] = 0x00, 162 [BQ27XXX_REG_TEMP] = 0x06, 163 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 164 [BQ27XXX_REG_VOLT] = 0x08, 165 [BQ27XXX_REG_AI] = 0x14, 166 [BQ27XXX_REG_FLAGS] = 0x0a, 167 [BQ27XXX_REG_TTE] = 0x16, 168 [BQ27XXX_REG_TTF] = 0x18, 169 [BQ27XXX_REG_TTES] = 0x1c, 170 [BQ27XXX_REG_TTECP] = 0x26, 171 [BQ27XXX_REG_NAC] = 0x0c, 172 [BQ27XXX_REG_FCC] = 0x12, 173 [BQ27XXX_REG_CYCT] = 0x2a, 174 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 175 [BQ27XXX_REG_SOC] = 0x0b, 176 [BQ27XXX_REG_DCAP] = 0x76, 177 [BQ27XXX_REG_AP] = INVALID_REG_ADDR, 178 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR, 179 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR, 180 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR, 181 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR, 182 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR, 183 }, 184 bq2750x_regs[BQ27XXX_REG_MAX] = { 185 [BQ27XXX_REG_CTRL] = 0x00, 186 [BQ27XXX_REG_TEMP] = 0x06, 187 [BQ27XXX_REG_INT_TEMP] = 0x28, 188 [BQ27XXX_REG_VOLT] = 0x08, 189 [BQ27XXX_REG_AI] = 0x14, 190 [BQ27XXX_REG_FLAGS] = 0x0a, 191 [BQ27XXX_REG_TTE] = 0x16, 192 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 193 [BQ27XXX_REG_TTES] = 0x1a, 194 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 195 [BQ27XXX_REG_NAC] = 0x0c, 196 [BQ27XXX_REG_FCC] = 0x12, 197 [BQ27XXX_REG_CYCT] = 0x2a, 198 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 199 [BQ27XXX_REG_SOC] = 0x2c, 200 [BQ27XXX_REG_DCAP] = 0x3c, 201 [BQ27XXX_REG_AP] = INVALID_REG_ADDR, 202 BQ27XXX_DM_REG_ROWS, 203 }, 204#define bq2751x_regs bq27510g3_regs 205#define bq2752x_regs bq27510g3_regs 206 bq27500_regs[BQ27XXX_REG_MAX] = { 207 [BQ27XXX_REG_CTRL] = 0x00, 208 [BQ27XXX_REG_TEMP] = 0x06, 209 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 210 [BQ27XXX_REG_VOLT] = 0x08, 211 [BQ27XXX_REG_AI] = 0x14, 212 [BQ27XXX_REG_FLAGS] = 0x0a, 213 [BQ27XXX_REG_TTE] = 0x16, 214 [BQ27XXX_REG_TTF] = 0x18, 215 [BQ27XXX_REG_TTES] = 0x1c, 216 [BQ27XXX_REG_TTECP] = 0x26, 217 [BQ27XXX_REG_NAC] = 0x0c, 218 [BQ27XXX_REG_FCC] = 0x12, 219 [BQ27XXX_REG_CYCT] = 0x2a, 220 [BQ27XXX_REG_AE] = 0x22, 221 [BQ27XXX_REG_SOC] = 0x2c, 222 [BQ27XXX_REG_DCAP] = 0x3c, 223 [BQ27XXX_REG_AP] = 0x24, 224 BQ27XXX_DM_REG_ROWS, 225 }, 226#define bq27510g1_regs bq27500_regs 227#define bq27510g2_regs bq27500_regs 228 bq27510g3_regs[BQ27XXX_REG_MAX] = { 229 [BQ27XXX_REG_CTRL] = 0x00, 230 [BQ27XXX_REG_TEMP] = 0x06, 231 [BQ27XXX_REG_INT_TEMP] = 0x28, 232 [BQ27XXX_REG_VOLT] = 0x08, 233 [BQ27XXX_REG_AI] = 0x14, 234 [BQ27XXX_REG_FLAGS] = 0x0a, 235 [BQ27XXX_REG_TTE] = 0x16, 236 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 237 [BQ27XXX_REG_TTES] = 0x1a, 238 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 239 [BQ27XXX_REG_NAC] = 0x0c, 240 [BQ27XXX_REG_FCC] = 0x12, 241 [BQ27XXX_REG_CYCT] = 0x1e, 242 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 243 [BQ27XXX_REG_SOC] = 0x20, 244 [BQ27XXX_REG_DCAP] = 0x2e, 245 [BQ27XXX_REG_AP] = INVALID_REG_ADDR, 246 BQ27XXX_DM_REG_ROWS, 247 }, 248 bq27520g1_regs[BQ27XXX_REG_MAX] = { 249 [BQ27XXX_REG_CTRL] = 0x00, 250 [BQ27XXX_REG_TEMP] = 0x06, 251 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 252 [BQ27XXX_REG_VOLT] = 0x08, 253 [BQ27XXX_REG_AI] = 0x14, 254 [BQ27XXX_REG_FLAGS] = 0x0a, 255 [BQ27XXX_REG_TTE] = 0x16, 256 [BQ27XXX_REG_TTF] = 0x18, 257 [BQ27XXX_REG_TTES] = 0x1c, 258 [BQ27XXX_REG_TTECP] = 0x26, 259 [BQ27XXX_REG_NAC] = 0x0c, 260 [BQ27XXX_REG_FCC] = 0x12, 261 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, 262 [BQ27XXX_REG_AE] = 0x22, 263 [BQ27XXX_REG_SOC] = 0x2c, 264 [BQ27XXX_REG_DCAP] = 0x3c, 265 [BQ27XXX_REG_AP] = 0x24, 266 BQ27XXX_DM_REG_ROWS, 267 }, 268 bq27520g2_regs[BQ27XXX_REG_MAX] = { 269 [BQ27XXX_REG_CTRL] = 0x00, 270 [BQ27XXX_REG_TEMP] = 0x06, 271 [BQ27XXX_REG_INT_TEMP] = 0x36, 272 [BQ27XXX_REG_VOLT] = 0x08, 273 [BQ27XXX_REG_AI] = 0x14, 274 [BQ27XXX_REG_FLAGS] = 0x0a, 275 [BQ27XXX_REG_TTE] = 0x16, 276 [BQ27XXX_REG_TTF] = 0x18, 277 [BQ27XXX_REG_TTES] = 0x1c, 278 [BQ27XXX_REG_TTECP] = 0x26, 279 [BQ27XXX_REG_NAC] = 0x0c, 280 [BQ27XXX_REG_FCC] = 0x12, 281 [BQ27XXX_REG_CYCT] = 0x2a, 282 [BQ27XXX_REG_AE] = 0x22, 283 [BQ27XXX_REG_SOC] = 0x2c, 284 [BQ27XXX_REG_DCAP] = 0x3c, 285 [BQ27XXX_REG_AP] = 0x24, 286 BQ27XXX_DM_REG_ROWS, 287 }, 288 bq27520g3_regs[BQ27XXX_REG_MAX] = { 289 [BQ27XXX_REG_CTRL] = 0x00, 290 [BQ27XXX_REG_TEMP] = 0x06, 291 [BQ27XXX_REG_INT_TEMP] = 0x36, 292 [BQ27XXX_REG_VOLT] = 0x08, 293 [BQ27XXX_REG_AI] = 0x14, 294 [BQ27XXX_REG_FLAGS] = 0x0a, 295 [BQ27XXX_REG_TTE] = 0x16, 296 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 297 [BQ27XXX_REG_TTES] = 0x1c, 298 [BQ27XXX_REG_TTECP] = 0x26, 299 [BQ27XXX_REG_NAC] = 0x0c, 300 [BQ27XXX_REG_FCC] = 0x12, 301 [BQ27XXX_REG_CYCT] = 0x2a, 302 [BQ27XXX_REG_AE] = 0x22, 303 [BQ27XXX_REG_SOC] = 0x2c, 304 [BQ27XXX_REG_DCAP] = 0x3c, 305 [BQ27XXX_REG_AP] = 0x24, 306 BQ27XXX_DM_REG_ROWS, 307 }, 308 bq27520g4_regs[BQ27XXX_REG_MAX] = { 309 [BQ27XXX_REG_CTRL] = 0x00, 310 [BQ27XXX_REG_TEMP] = 0x06, 311 [BQ27XXX_REG_INT_TEMP] = 0x28, 312 [BQ27XXX_REG_VOLT] = 0x08, 313 [BQ27XXX_REG_AI] = 0x14, 314 [BQ27XXX_REG_FLAGS] = 0x0a, 315 [BQ27XXX_REG_TTE] = 0x16, 316 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 317 [BQ27XXX_REG_TTES] = 0x1c, 318 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 319 [BQ27XXX_REG_NAC] = 0x0c, 320 [BQ27XXX_REG_FCC] = 0x12, 321 [BQ27XXX_REG_CYCT] = 0x1e, 322 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 323 [BQ27XXX_REG_SOC] = 0x20, 324 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR, 325 [BQ27XXX_REG_AP] = INVALID_REG_ADDR, 326 BQ27XXX_DM_REG_ROWS, 327 }, 328 bq27521_regs[BQ27XXX_REG_MAX] = { 329 [BQ27XXX_REG_CTRL] = 0x02, 330 [BQ27XXX_REG_TEMP] = 0x0a, 331 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 332 [BQ27XXX_REG_VOLT] = 0x0c, 333 [BQ27XXX_REG_AI] = 0x0e, 334 [BQ27XXX_REG_FLAGS] = 0x08, 335 [BQ27XXX_REG_TTE] = INVALID_REG_ADDR, 336 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 337 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 338 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 339 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 340 [BQ27XXX_REG_FCC] = INVALID_REG_ADDR, 341 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, 342 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 343 [BQ27XXX_REG_SOC] = INVALID_REG_ADDR, 344 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR, 345 [BQ27XXX_REG_AP] = INVALID_REG_ADDR, 346 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR, 347 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR, 348 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR, 349 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR, 350 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR, 351 }, 352 bq27530_regs[BQ27XXX_REG_MAX] = { 353 [BQ27XXX_REG_CTRL] = 0x00, 354 [BQ27XXX_REG_TEMP] = 0x06, 355 [BQ27XXX_REG_INT_TEMP] = 0x32, 356 [BQ27XXX_REG_VOLT] = 0x08, 357 [BQ27XXX_REG_AI] = 0x14, 358 [BQ27XXX_REG_FLAGS] = 0x0a, 359 [BQ27XXX_REG_TTE] = 0x16, 360 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 361 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 362 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 363 [BQ27XXX_REG_NAC] = 0x0c, 364 [BQ27XXX_REG_FCC] = 0x12, 365 [BQ27XXX_REG_CYCT] = 0x2a, 366 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 367 [BQ27XXX_REG_SOC] = 0x2c, 368 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR, 369 [BQ27XXX_REG_AP] = 0x24, 370 BQ27XXX_DM_REG_ROWS, 371 }, 372#define bq27531_regs bq27530_regs 373 bq27541_regs[BQ27XXX_REG_MAX] = { 374 [BQ27XXX_REG_CTRL] = 0x00, 375 [BQ27XXX_REG_TEMP] = 0x06, 376 [BQ27XXX_REG_INT_TEMP] = 0x28, 377 [BQ27XXX_REG_VOLT] = 0x08, 378 [BQ27XXX_REG_AI] = 0x14, 379 [BQ27XXX_REG_FLAGS] = 0x0a, 380 [BQ27XXX_REG_TTE] = 0x16, 381 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 382 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 383 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 384 [BQ27XXX_REG_NAC] = 0x0c, 385 [BQ27XXX_REG_FCC] = 0x12, 386 [BQ27XXX_REG_CYCT] = 0x2a, 387 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 388 [BQ27XXX_REG_SOC] = 0x2c, 389 [BQ27XXX_REG_DCAP] = 0x3c, 390 [BQ27XXX_REG_AP] = 0x24, 391 BQ27XXX_DM_REG_ROWS, 392 }, 393#define bq27542_regs bq27541_regs 394#define bq27546_regs bq27541_regs 395#define bq27742_regs bq27541_regs 396 bq27545_regs[BQ27XXX_REG_MAX] = { 397 [BQ27XXX_REG_CTRL] = 0x00, 398 [BQ27XXX_REG_TEMP] = 0x06, 399 [BQ27XXX_REG_INT_TEMP] = 0x28, 400 [BQ27XXX_REG_VOLT] = 0x08, 401 [BQ27XXX_REG_AI] = 0x14, 402 [BQ27XXX_REG_FLAGS] = 0x0a, 403 [BQ27XXX_REG_TTE] = 0x16, 404 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 405 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 406 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 407 [BQ27XXX_REG_NAC] = 0x0c, 408 [BQ27XXX_REG_FCC] = 0x12, 409 [BQ27XXX_REG_CYCT] = 0x2a, 410 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 411 [BQ27XXX_REG_SOC] = 0x2c, 412 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR, 413 [BQ27XXX_REG_AP] = 0x24, 414 BQ27XXX_DM_REG_ROWS, 415 }, 416 bq27421_regs[BQ27XXX_REG_MAX] = { 417 [BQ27XXX_REG_CTRL] = 0x00, 418 [BQ27XXX_REG_TEMP] = 0x02, 419 [BQ27XXX_REG_INT_TEMP] = 0x1e, 420 [BQ27XXX_REG_VOLT] = 0x04, 421 [BQ27XXX_REG_AI] = 0x10, 422 [BQ27XXX_REG_FLAGS] = 0x06, 423 [BQ27XXX_REG_TTE] = INVALID_REG_ADDR, 424 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 425 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 426 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 427 [BQ27XXX_REG_NAC] = 0x08, 428 [BQ27XXX_REG_FCC] = 0x0e, 429 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, 430 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 431 [BQ27XXX_REG_SOC] = 0x1c, 432 [BQ27XXX_REG_DCAP] = 0x3c, 433 [BQ27XXX_REG_AP] = 0x18, 434 BQ27XXX_DM_REG_ROWS, 435 }, 436#define bq27411_regs bq27421_regs 437#define bq27425_regs bq27421_regs 438#define bq27426_regs bq27421_regs 439#define bq27441_regs bq27421_regs 440#define bq27621_regs bq27421_regs 441 bq27z561_regs[BQ27XXX_REG_MAX] = { 442 [BQ27XXX_REG_CTRL] = 0x00, 443 [BQ27XXX_REG_TEMP] = 0x06, 444 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 445 [BQ27XXX_REG_VOLT] = 0x08, 446 [BQ27XXX_REG_AI] = 0x14, 447 [BQ27XXX_REG_FLAGS] = 0x0a, 448 [BQ27XXX_REG_TTE] = 0x16, 449 [BQ27XXX_REG_TTF] = 0x18, 450 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 451 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 452 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 453 [BQ27XXX_REG_FCC] = 0x12, 454 [BQ27XXX_REG_CYCT] = 0x2a, 455 [BQ27XXX_REG_AE] = 0x22, 456 [BQ27XXX_REG_SOC] = 0x2c, 457 [BQ27XXX_REG_DCAP] = 0x3c, 458 [BQ27XXX_REG_AP] = 0x22, 459 BQ27XXX_DM_REG_ROWS, 460 }, 461 bq28z610_regs[BQ27XXX_REG_MAX] = { 462 [BQ27XXX_REG_CTRL] = 0x00, 463 [BQ27XXX_REG_TEMP] = 0x06, 464 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 465 [BQ27XXX_REG_VOLT] = 0x08, 466 [BQ27XXX_REG_AI] = 0x14, 467 [BQ27XXX_REG_FLAGS] = 0x0a, 468 [BQ27XXX_REG_TTE] = 0x16, 469 [BQ27XXX_REG_TTF] = 0x18, 470 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 471 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 472 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 473 [BQ27XXX_REG_FCC] = 0x12, 474 [BQ27XXX_REG_CYCT] = 0x2a, 475 [BQ27XXX_REG_AE] = 0x22, 476 [BQ27XXX_REG_SOC] = 0x2c, 477 [BQ27XXX_REG_DCAP] = 0x3c, 478 [BQ27XXX_REG_AP] = 0x22, 479 BQ27XXX_DM_REG_ROWS, 480 }, 481 bq34z100_regs[BQ27XXX_REG_MAX] = { 482 [BQ27XXX_REG_CTRL] = 0x00, 483 [BQ27XXX_REG_TEMP] = 0x0c, 484 [BQ27XXX_REG_INT_TEMP] = 0x2a, 485 [BQ27XXX_REG_VOLT] = 0x08, 486 [BQ27XXX_REG_AI] = 0x0a, 487 [BQ27XXX_REG_FLAGS] = 0x0e, 488 [BQ27XXX_REG_TTE] = 0x18, 489 [BQ27XXX_REG_TTF] = 0x1a, 490 [BQ27XXX_REG_TTES] = 0x1e, 491 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 492 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 493 [BQ27XXX_REG_FCC] = 0x06, 494 [BQ27XXX_REG_CYCT] = 0x2c, 495 [BQ27XXX_REG_AE] = 0x24, 496 [BQ27XXX_REG_SOC] = 0x02, 497 [BQ27XXX_REG_DCAP] = 0x3c, 498 [BQ27XXX_REG_AP] = 0x22, 499 BQ27XXX_DM_REG_ROWS, 500 }; 501 502static enum power_supply_property bq27000_props[] = { 503 POWER_SUPPLY_PROP_STATUS, 504 POWER_SUPPLY_PROP_PRESENT, 505 POWER_SUPPLY_PROP_VOLTAGE_NOW, 506 POWER_SUPPLY_PROP_CURRENT_NOW, 507 POWER_SUPPLY_PROP_CAPACITY, 508 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 509 POWER_SUPPLY_PROP_TEMP, 510 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 511 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 512 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 513 POWER_SUPPLY_PROP_TECHNOLOGY, 514 POWER_SUPPLY_PROP_CHARGE_FULL, 515 POWER_SUPPLY_PROP_CHARGE_NOW, 516 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 517 POWER_SUPPLY_PROP_CYCLE_COUNT, 518 POWER_SUPPLY_PROP_ENERGY_NOW, 519 POWER_SUPPLY_PROP_POWER_AVG, 520 POWER_SUPPLY_PROP_HEALTH, 521 POWER_SUPPLY_PROP_MANUFACTURER, 522}; 523 524static enum power_supply_property bq27010_props[] = { 525 POWER_SUPPLY_PROP_STATUS, 526 POWER_SUPPLY_PROP_PRESENT, 527 POWER_SUPPLY_PROP_VOLTAGE_NOW, 528 POWER_SUPPLY_PROP_CURRENT_NOW, 529 POWER_SUPPLY_PROP_CAPACITY, 530 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 531 POWER_SUPPLY_PROP_TEMP, 532 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 533 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 534 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 535 POWER_SUPPLY_PROP_TECHNOLOGY, 536 POWER_SUPPLY_PROP_CHARGE_FULL, 537 POWER_SUPPLY_PROP_CHARGE_NOW, 538 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 539 POWER_SUPPLY_PROP_CYCLE_COUNT, 540 POWER_SUPPLY_PROP_HEALTH, 541 POWER_SUPPLY_PROP_MANUFACTURER, 542}; 543 544#define bq2750x_props bq27510g3_props 545#define bq2751x_props bq27510g3_props 546#define bq2752x_props bq27510g3_props 547 548static enum power_supply_property bq27500_props[] = { 549 POWER_SUPPLY_PROP_STATUS, 550 POWER_SUPPLY_PROP_PRESENT, 551 POWER_SUPPLY_PROP_VOLTAGE_NOW, 552 POWER_SUPPLY_PROP_CURRENT_NOW, 553 POWER_SUPPLY_PROP_CAPACITY, 554 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 555 POWER_SUPPLY_PROP_TEMP, 556 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 557 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 558 POWER_SUPPLY_PROP_TECHNOLOGY, 559 POWER_SUPPLY_PROP_CHARGE_FULL, 560 POWER_SUPPLY_PROP_CHARGE_NOW, 561 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 562 POWER_SUPPLY_PROP_CYCLE_COUNT, 563 POWER_SUPPLY_PROP_ENERGY_NOW, 564 POWER_SUPPLY_PROP_POWER_AVG, 565 POWER_SUPPLY_PROP_HEALTH, 566 POWER_SUPPLY_PROP_MANUFACTURER, 567}; 568#define bq27510g1_props bq27500_props 569#define bq27510g2_props bq27500_props 570 571static enum power_supply_property bq27510g3_props[] = { 572 POWER_SUPPLY_PROP_STATUS, 573 POWER_SUPPLY_PROP_PRESENT, 574 POWER_SUPPLY_PROP_VOLTAGE_NOW, 575 POWER_SUPPLY_PROP_CURRENT_NOW, 576 POWER_SUPPLY_PROP_CAPACITY, 577 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 578 POWER_SUPPLY_PROP_TEMP, 579 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 580 POWER_SUPPLY_PROP_TECHNOLOGY, 581 POWER_SUPPLY_PROP_CHARGE_FULL, 582 POWER_SUPPLY_PROP_CHARGE_NOW, 583 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 584 POWER_SUPPLY_PROP_CYCLE_COUNT, 585 POWER_SUPPLY_PROP_HEALTH, 586 POWER_SUPPLY_PROP_MANUFACTURER, 587}; 588 589static enum power_supply_property bq27520g1_props[] = { 590 POWER_SUPPLY_PROP_STATUS, 591 POWER_SUPPLY_PROP_PRESENT, 592 POWER_SUPPLY_PROP_VOLTAGE_NOW, 593 POWER_SUPPLY_PROP_CURRENT_NOW, 594 POWER_SUPPLY_PROP_CAPACITY, 595 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 596 POWER_SUPPLY_PROP_TEMP, 597 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 598 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 599 POWER_SUPPLY_PROP_TECHNOLOGY, 600 POWER_SUPPLY_PROP_CHARGE_FULL, 601 POWER_SUPPLY_PROP_CHARGE_NOW, 602 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 603 POWER_SUPPLY_PROP_ENERGY_NOW, 604 POWER_SUPPLY_PROP_POWER_AVG, 605 POWER_SUPPLY_PROP_HEALTH, 606 POWER_SUPPLY_PROP_MANUFACTURER, 607}; 608 609#define bq27520g2_props bq27500_props 610 611static enum power_supply_property bq27520g3_props[] = { 612 POWER_SUPPLY_PROP_STATUS, 613 POWER_SUPPLY_PROP_PRESENT, 614 POWER_SUPPLY_PROP_VOLTAGE_NOW, 615 POWER_SUPPLY_PROP_CURRENT_NOW, 616 POWER_SUPPLY_PROP_CAPACITY, 617 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 618 POWER_SUPPLY_PROP_TEMP, 619 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 620 POWER_SUPPLY_PROP_TECHNOLOGY, 621 POWER_SUPPLY_PROP_CHARGE_FULL, 622 POWER_SUPPLY_PROP_CHARGE_NOW, 623 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 624 POWER_SUPPLY_PROP_CYCLE_COUNT, 625 POWER_SUPPLY_PROP_ENERGY_NOW, 626 POWER_SUPPLY_PROP_POWER_AVG, 627 POWER_SUPPLY_PROP_HEALTH, 628 POWER_SUPPLY_PROP_MANUFACTURER, 629}; 630 631static enum power_supply_property bq27520g4_props[] = { 632 POWER_SUPPLY_PROP_STATUS, 633 POWER_SUPPLY_PROP_PRESENT, 634 POWER_SUPPLY_PROP_VOLTAGE_NOW, 635 POWER_SUPPLY_PROP_CURRENT_NOW, 636 POWER_SUPPLY_PROP_CAPACITY, 637 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 638 POWER_SUPPLY_PROP_TEMP, 639 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 640 POWER_SUPPLY_PROP_TECHNOLOGY, 641 POWER_SUPPLY_PROP_CHARGE_FULL, 642 POWER_SUPPLY_PROP_CHARGE_NOW, 643 POWER_SUPPLY_PROP_CYCLE_COUNT, 644 POWER_SUPPLY_PROP_HEALTH, 645 POWER_SUPPLY_PROP_MANUFACTURER, 646}; 647 648static enum power_supply_property bq27521_props[] = { 649 POWER_SUPPLY_PROP_STATUS, 650 POWER_SUPPLY_PROP_PRESENT, 651 POWER_SUPPLY_PROP_VOLTAGE_NOW, 652 POWER_SUPPLY_PROP_CURRENT_NOW, 653 POWER_SUPPLY_PROP_TEMP, 654 POWER_SUPPLY_PROP_TECHNOLOGY, 655}; 656 657static enum power_supply_property bq27530_props[] = { 658 POWER_SUPPLY_PROP_STATUS, 659 POWER_SUPPLY_PROP_PRESENT, 660 POWER_SUPPLY_PROP_VOLTAGE_NOW, 661 POWER_SUPPLY_PROP_CURRENT_NOW, 662 POWER_SUPPLY_PROP_CAPACITY, 663 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 664 POWER_SUPPLY_PROP_TEMP, 665 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 666 POWER_SUPPLY_PROP_TECHNOLOGY, 667 POWER_SUPPLY_PROP_CHARGE_FULL, 668 POWER_SUPPLY_PROP_CHARGE_NOW, 669 POWER_SUPPLY_PROP_POWER_AVG, 670 POWER_SUPPLY_PROP_HEALTH, 671 POWER_SUPPLY_PROP_CYCLE_COUNT, 672 POWER_SUPPLY_PROP_MANUFACTURER, 673}; 674#define bq27531_props bq27530_props 675 676static enum power_supply_property bq27541_props[] = { 677 POWER_SUPPLY_PROP_STATUS, 678 POWER_SUPPLY_PROP_PRESENT, 679 POWER_SUPPLY_PROP_VOLTAGE_NOW, 680 POWER_SUPPLY_PROP_CURRENT_NOW, 681 POWER_SUPPLY_PROP_CAPACITY, 682 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 683 POWER_SUPPLY_PROP_TEMP, 684 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 685 POWER_SUPPLY_PROP_TECHNOLOGY, 686 POWER_SUPPLY_PROP_CHARGE_FULL, 687 POWER_SUPPLY_PROP_CHARGE_NOW, 688 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 689 POWER_SUPPLY_PROP_CYCLE_COUNT, 690 POWER_SUPPLY_PROP_POWER_AVG, 691 POWER_SUPPLY_PROP_HEALTH, 692 POWER_SUPPLY_PROP_MANUFACTURER, 693}; 694#define bq27542_props bq27541_props 695#define bq27546_props bq27541_props 696#define bq27742_props bq27541_props 697 698static enum power_supply_property bq27545_props[] = { 699 POWER_SUPPLY_PROP_STATUS, 700 POWER_SUPPLY_PROP_PRESENT, 701 POWER_SUPPLY_PROP_VOLTAGE_NOW, 702 POWER_SUPPLY_PROP_CURRENT_NOW, 703 POWER_SUPPLY_PROP_CAPACITY, 704 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 705 POWER_SUPPLY_PROP_TEMP, 706 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 707 POWER_SUPPLY_PROP_TECHNOLOGY, 708 POWER_SUPPLY_PROP_CHARGE_FULL, 709 POWER_SUPPLY_PROP_CHARGE_NOW, 710 POWER_SUPPLY_PROP_HEALTH, 711 POWER_SUPPLY_PROP_CYCLE_COUNT, 712 POWER_SUPPLY_PROP_POWER_AVG, 713 POWER_SUPPLY_PROP_MANUFACTURER, 714}; 715 716static enum power_supply_property bq27421_props[] = { 717 POWER_SUPPLY_PROP_STATUS, 718 POWER_SUPPLY_PROP_PRESENT, 719 POWER_SUPPLY_PROP_VOLTAGE_NOW, 720 POWER_SUPPLY_PROP_CURRENT_NOW, 721 POWER_SUPPLY_PROP_CAPACITY, 722 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 723 POWER_SUPPLY_PROP_TEMP, 724 POWER_SUPPLY_PROP_TECHNOLOGY, 725 POWER_SUPPLY_PROP_CHARGE_FULL, 726 POWER_SUPPLY_PROP_CHARGE_NOW, 727 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 728 POWER_SUPPLY_PROP_MANUFACTURER, 729}; 730#define bq27411_props bq27421_props 731#define bq27425_props bq27421_props 732#define bq27426_props bq27421_props 733#define bq27441_props bq27421_props 734#define bq27621_props bq27421_props 735 736static enum power_supply_property bq27z561_props[] = { 737 POWER_SUPPLY_PROP_STATUS, 738 POWER_SUPPLY_PROP_PRESENT, 739 POWER_SUPPLY_PROP_VOLTAGE_NOW, 740 POWER_SUPPLY_PROP_CURRENT_NOW, 741 POWER_SUPPLY_PROP_CAPACITY, 742 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 743 POWER_SUPPLY_PROP_TEMP, 744 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 745 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 746 POWER_SUPPLY_PROP_TECHNOLOGY, 747 POWER_SUPPLY_PROP_CHARGE_FULL, 748 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 749 POWER_SUPPLY_PROP_CYCLE_COUNT, 750 POWER_SUPPLY_PROP_POWER_AVG, 751 POWER_SUPPLY_PROP_HEALTH, 752 POWER_SUPPLY_PROP_MANUFACTURER, 753}; 754 755static enum power_supply_property bq28z610_props[] = { 756 POWER_SUPPLY_PROP_STATUS, 757 POWER_SUPPLY_PROP_PRESENT, 758 POWER_SUPPLY_PROP_VOLTAGE_NOW, 759 POWER_SUPPLY_PROP_CURRENT_NOW, 760 POWER_SUPPLY_PROP_CAPACITY, 761 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 762 POWER_SUPPLY_PROP_TEMP, 763 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 764 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 765 POWER_SUPPLY_PROP_TECHNOLOGY, 766 POWER_SUPPLY_PROP_CHARGE_FULL, 767 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 768 POWER_SUPPLY_PROP_CYCLE_COUNT, 769 POWER_SUPPLY_PROP_POWER_AVG, 770 POWER_SUPPLY_PROP_HEALTH, 771 POWER_SUPPLY_PROP_MANUFACTURER, 772}; 773 774static enum power_supply_property bq34z100_props[] = { 775 POWER_SUPPLY_PROP_STATUS, 776 POWER_SUPPLY_PROP_PRESENT, 777 POWER_SUPPLY_PROP_VOLTAGE_NOW, 778 POWER_SUPPLY_PROP_CURRENT_NOW, 779 POWER_SUPPLY_PROP_CAPACITY, 780 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 781 POWER_SUPPLY_PROP_TEMP, 782 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 783 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 784 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 785 POWER_SUPPLY_PROP_TECHNOLOGY, 786 POWER_SUPPLY_PROP_CHARGE_FULL, 787 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 788 POWER_SUPPLY_PROP_CYCLE_COUNT, 789 POWER_SUPPLY_PROP_ENERGY_NOW, 790 POWER_SUPPLY_PROP_POWER_AVG, 791 POWER_SUPPLY_PROP_HEALTH, 792 POWER_SUPPLY_PROP_MANUFACTURER, 793}; 794 795struct bq27xxx_dm_reg { 796 u8 subclass_id; 797 u8 offset; 798 u8 bytes; 799 u16 min, max; 800}; 801 802enum bq27xxx_dm_reg_id { 803 BQ27XXX_DM_DESIGN_CAPACITY = 0, 804 BQ27XXX_DM_DESIGN_ENERGY, 805 BQ27XXX_DM_TERMINATE_VOLTAGE, 806}; 807 808#define bq27000_dm_regs 0 809#define bq27010_dm_regs 0 810#define bq2750x_dm_regs 0 811#define bq2751x_dm_regs 0 812#define bq2752x_dm_regs 0 813 814#if 0 /* not yet tested */ 815static struct bq27xxx_dm_reg bq27500_dm_regs[] = { 816 [BQ27XXX_DM_DESIGN_CAPACITY] = { 48, 10, 2, 0, 65535 }, 817 [BQ27XXX_DM_DESIGN_ENERGY] = { }, /* missing on chip */ 818 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 48, 2, 1000, 32767 }, 819}; 820#else 821#define bq27500_dm_regs 0 822#endif 823 824/* todo create data memory definitions from datasheets and test on chips */ 825#define bq27510g1_dm_regs 0 826#define bq27510g2_dm_regs 0 827#define bq27510g3_dm_regs 0 828#define bq27520g1_dm_regs 0 829#define bq27520g2_dm_regs 0 830#define bq27520g3_dm_regs 0 831#define bq27520g4_dm_regs 0 832#define bq27521_dm_regs 0 833#define bq27530_dm_regs 0 834#define bq27531_dm_regs 0 835#define bq27541_dm_regs 0 836#define bq27542_dm_regs 0 837#define bq27546_dm_regs 0 838#define bq27742_dm_regs 0 839 840#if 0 /* not yet tested */ 841static struct bq27xxx_dm_reg bq27545_dm_regs[] = { 842 [BQ27XXX_DM_DESIGN_CAPACITY] = { 48, 23, 2, 0, 32767 }, 843 [BQ27XXX_DM_DESIGN_ENERGY] = { 48, 25, 2, 0, 32767 }, 844 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 67, 2, 2800, 3700 }, 845}; 846#else 847#define bq27545_dm_regs 0 848#endif 849 850static struct bq27xxx_dm_reg bq27411_dm_regs[] = { 851 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 10, 2, 0, 32767 }, 852 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 12, 2, 0, 32767 }, 853 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2800, 3700 }, 854}; 855 856static struct bq27xxx_dm_reg bq27421_dm_regs[] = { 857 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 10, 2, 0, 8000 }, 858 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 12, 2, 0, 32767 }, 859 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2500, 3700 }, 860}; 861 862static struct bq27xxx_dm_reg bq27425_dm_regs[] = { 863 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 12, 2, 0, 32767 }, 864 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 14, 2, 0, 32767 }, 865 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 18, 2, 2800, 3700 }, 866}; 867 868static struct bq27xxx_dm_reg bq27426_dm_regs[] = { 869 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 6, 2, 0, 8000 }, 870 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 8, 2, 0, 32767 }, 871 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 10, 2, 2500, 3700 }, 872}; 873 874#if 0 /* not yet tested */ 875#define bq27441_dm_regs bq27421_dm_regs 876#else 877#define bq27441_dm_regs 0 878#endif 879 880#if 0 /* not yet tested */ 881static struct bq27xxx_dm_reg bq27621_dm_regs[] = { 882 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 3, 2, 0, 8000 }, 883 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 5, 2, 0, 32767 }, 884 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 9, 2, 2500, 3700 }, 885}; 886#else 887#define bq27621_dm_regs 0 888#endif 889 890#define bq27z561_dm_regs 0 891#define bq28z610_dm_regs 0 892#define bq34z100_dm_regs 0 893 894#define BQ27XXX_O_ZERO BIT(0) 895#define BQ27XXX_O_OTDC BIT(1) /* has OTC/OTD overtemperature flags */ 896#define BQ27XXX_O_UTOT BIT(2) /* has OT overtemperature flag */ 897#define BQ27XXX_O_CFGUP BIT(3) 898#define BQ27XXX_O_RAM BIT(4) 899#define BQ27Z561_O_BITS BIT(5) 900#define BQ27XXX_O_SOC_SI BIT(6) /* SoC is single register */ 901#define BQ27XXX_O_HAS_CI BIT(7) /* has Capacity Inaccurate flag */ 902#define BQ27XXX_O_MUL_CHEM BIT(8) /* multiple chemistries supported */ 903 904#define BQ27XXX_DATA(ref, key, opt) { \ 905 .opts = (opt), \ 906 .unseal_key = key, \ 907 .regs = ref##_regs, \ 908 .dm_regs = ref##_dm_regs, \ 909 .props = ref##_props, \ 910 .props_size = ARRAY_SIZE(ref##_props) } 911 912static struct { 913 u32 opts; 914 u32 unseal_key; 915 u8 *regs; 916 struct bq27xxx_dm_reg *dm_regs; 917 enum power_supply_property *props; 918 size_t props_size; 919} bq27xxx_chip_data[] = { 920 [BQ27000] = BQ27XXX_DATA(bq27000, 0 , BQ27XXX_O_ZERO | BQ27XXX_O_SOC_SI | BQ27XXX_O_HAS_CI), 921 [BQ27010] = BQ27XXX_DATA(bq27010, 0 , BQ27XXX_O_ZERO | BQ27XXX_O_SOC_SI | BQ27XXX_O_HAS_CI), 922 [BQ2750X] = BQ27XXX_DATA(bq2750x, 0 , BQ27XXX_O_OTDC), 923 [BQ2751X] = BQ27XXX_DATA(bq2751x, 0 , BQ27XXX_O_OTDC), 924 [BQ2752X] = BQ27XXX_DATA(bq2752x, 0 , BQ27XXX_O_OTDC), 925 [BQ27500] = BQ27XXX_DATA(bq27500, 0x04143672, BQ27XXX_O_OTDC), 926 [BQ27510G1] = BQ27XXX_DATA(bq27510g1, 0 , BQ27XXX_O_OTDC), 927 [BQ27510G2] = BQ27XXX_DATA(bq27510g2, 0 , BQ27XXX_O_OTDC), 928 [BQ27510G3] = BQ27XXX_DATA(bq27510g3, 0 , BQ27XXX_O_OTDC), 929 [BQ27520G1] = BQ27XXX_DATA(bq27520g1, 0 , BQ27XXX_O_OTDC), 930 [BQ27520G2] = BQ27XXX_DATA(bq27520g2, 0 , BQ27XXX_O_OTDC), 931 [BQ27520G3] = BQ27XXX_DATA(bq27520g3, 0 , BQ27XXX_O_OTDC), 932 [BQ27520G4] = BQ27XXX_DATA(bq27520g4, 0 , BQ27XXX_O_OTDC), 933 [BQ27521] = BQ27XXX_DATA(bq27521, 0 , 0), 934 [BQ27530] = BQ27XXX_DATA(bq27530, 0 , BQ27XXX_O_UTOT), 935 [BQ27531] = BQ27XXX_DATA(bq27531, 0 , BQ27XXX_O_UTOT), 936 [BQ27541] = BQ27XXX_DATA(bq27541, 0 , BQ27XXX_O_OTDC), 937 [BQ27542] = BQ27XXX_DATA(bq27542, 0 , BQ27XXX_O_OTDC), 938 [BQ27546] = BQ27XXX_DATA(bq27546, 0 , BQ27XXX_O_OTDC), 939 [BQ27742] = BQ27XXX_DATA(bq27742, 0 , BQ27XXX_O_OTDC), 940 [BQ27545] = BQ27XXX_DATA(bq27545, 0x04143672, BQ27XXX_O_OTDC), 941 [BQ27411] = BQ27XXX_DATA(bq27411, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 942 [BQ27421] = BQ27XXX_DATA(bq27421, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 943 [BQ27425] = BQ27XXX_DATA(bq27425, 0x04143672, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP), 944 [BQ27426] = BQ27XXX_DATA(bq27426, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 945 [BQ27441] = BQ27XXX_DATA(bq27441, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 946 [BQ27621] = BQ27XXX_DATA(bq27621, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 947 [BQ27Z561] = BQ27XXX_DATA(bq27z561, 0 , BQ27Z561_O_BITS), 948 [BQ28Z610] = BQ27XXX_DATA(bq28z610, 0 , BQ27Z561_O_BITS), 949 [BQ34Z100] = BQ27XXX_DATA(bq34z100, 0 , BQ27XXX_O_OTDC | BQ27XXX_O_SOC_SI | \ 950 BQ27XXX_O_HAS_CI | BQ27XXX_O_MUL_CHEM), 951}; 952 953static DEFINE_MUTEX(bq27xxx_list_lock); 954static LIST_HEAD(bq27xxx_battery_devices); 955 956#define BQ27XXX_MSLEEP(i) usleep_range((i)*1000, (i)*1000+500) 957 958#define BQ27XXX_DM_SZ 32 959 960/** 961 * struct bq27xxx_dm_buf - chip data memory buffer 962 * @class: data memory subclass_id 963 * @block: data memory block number 964 * @data: data from/for the block 965 * @has_data: true if data has been filled by read 966 * @dirty: true if data has changed since last read/write 967 * 968 * Encapsulates info required to manage chip data memory blocks. 969 */ 970struct bq27xxx_dm_buf { 971 u8 class; 972 u8 block; 973 u8 data[BQ27XXX_DM_SZ]; 974 bool has_data, dirty; 975}; 976 977#define BQ27XXX_DM_BUF(di, i) { \ 978 .class = (di)->dm_regs[i].subclass_id, \ 979 .block = (di)->dm_regs[i].offset / BQ27XXX_DM_SZ, \ 980} 981 982static inline u16 *bq27xxx_dm_reg_ptr(struct bq27xxx_dm_buf *buf, 983 struct bq27xxx_dm_reg *reg) 984{ 985 if (buf->class == reg->subclass_id && 986 buf->block == reg->offset / BQ27XXX_DM_SZ) 987 return (u16 *) (buf->data + reg->offset % BQ27XXX_DM_SZ); 988 989 return NULL; 990} 991 992static const char * const bq27xxx_dm_reg_name[] = { 993 [BQ27XXX_DM_DESIGN_CAPACITY] = "design-capacity", 994 [BQ27XXX_DM_DESIGN_ENERGY] = "design-energy", 995 [BQ27XXX_DM_TERMINATE_VOLTAGE] = "terminate-voltage", 996}; 997 998 999static bool bq27xxx_dt_to_nvm = true; 1000module_param_named(dt_monitored_battery_updates_nvm, bq27xxx_dt_to_nvm, bool, 0444); 1001MODULE_PARM_DESC(dt_monitored_battery_updates_nvm, 1002 "Devicetree monitored-battery config updates data memory on NVM/flash chips.\n" 1003 "Users must set this =0 when installing a different type of battery!\n" 1004 "Default is =1." 1005#ifndef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM 1006 "\nSetting this affects future kernel updates, not the current configuration." 1007#endif 1008); 1009 1010static int poll_interval_param_set(const char *val, const struct kernel_param *kp) 1011{ 1012 struct bq27xxx_device_info *di; 1013 unsigned int prev_val = *(unsigned int *) kp->arg; 1014 int ret; 1015 1016 ret = param_set_uint(val, kp); 1017 if (ret < 0 || prev_val == *(unsigned int *) kp->arg) 1018 return ret; 1019 1020 mutex_lock(&bq27xxx_list_lock); 1021 list_for_each_entry(di, &bq27xxx_battery_devices, list) 1022 mod_delayed_work(system_wq, &di->work, 0); 1023 mutex_unlock(&bq27xxx_list_lock); 1024 1025 return ret; 1026} 1027 1028static const struct kernel_param_ops param_ops_poll_interval = { 1029 .get = param_get_uint, 1030 .set = poll_interval_param_set, 1031}; 1032 1033static unsigned int poll_interval = 360; 1034module_param_cb(poll_interval, ¶m_ops_poll_interval, &poll_interval, 0644); 1035MODULE_PARM_DESC(poll_interval, 1036 "battery poll interval in seconds - 0 disables polling"); 1037 1038/* 1039 * Common code for BQ27xxx devices 1040 */ 1041 1042static inline int bq27xxx_read(struct bq27xxx_device_info *di, int reg_index, 1043 bool single) 1044{ 1045 int ret; 1046 1047 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1048 return -EINVAL; 1049 1050 ret = di->bus.read(di, di->regs[reg_index], single); 1051 if (ret < 0) 1052 dev_dbg(di->dev, "failed to read register 0x%02x (index %d)\n", 1053 di->regs[reg_index], reg_index); 1054 1055 return ret; 1056} 1057 1058static inline int bq27xxx_write(struct bq27xxx_device_info *di, int reg_index, 1059 u16 value, bool single) 1060{ 1061 int ret; 1062 1063 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1064 return -EINVAL; 1065 1066 if (!di->bus.write) 1067 return -EPERM; 1068 1069 ret = di->bus.write(di, di->regs[reg_index], value, single); 1070 if (ret < 0) 1071 dev_dbg(di->dev, "failed to write register 0x%02x (index %d)\n", 1072 di->regs[reg_index], reg_index); 1073 1074 return ret; 1075} 1076 1077static inline int bq27xxx_read_block(struct bq27xxx_device_info *di, int reg_index, 1078 u8 *data, int len) 1079{ 1080 int ret; 1081 1082 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1083 return -EINVAL; 1084 1085 if (!di->bus.read_bulk) 1086 return -EPERM; 1087 1088 ret = di->bus.read_bulk(di, di->regs[reg_index], data, len); 1089 if (ret < 0) 1090 dev_dbg(di->dev, "failed to read_bulk register 0x%02x (index %d)\n", 1091 di->regs[reg_index], reg_index); 1092 1093 return ret; 1094} 1095 1096static inline int bq27xxx_write_block(struct bq27xxx_device_info *di, int reg_index, 1097 u8 *data, int len) 1098{ 1099 int ret; 1100 1101 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1102 return -EINVAL; 1103 1104 if (!di->bus.write_bulk) 1105 return -EPERM; 1106 1107 ret = di->bus.write_bulk(di, di->regs[reg_index], data, len); 1108 if (ret < 0) 1109 dev_dbg(di->dev, "failed to write_bulk register 0x%02x (index %d)\n", 1110 di->regs[reg_index], reg_index); 1111 1112 return ret; 1113} 1114 1115static int bq27xxx_battery_seal(struct bq27xxx_device_info *di) 1116{ 1117 int ret; 1118 1119 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, BQ27XXX_SEALED, false); 1120 if (ret < 0) { 1121 dev_err(di->dev, "bus error on seal: %d\n", ret); 1122 return ret; 1123 } 1124 1125 return 0; 1126} 1127 1128static int bq27xxx_battery_unseal(struct bq27xxx_device_info *di) 1129{ 1130 int ret; 1131 1132 if (di->unseal_key == 0) { 1133 dev_err(di->dev, "unseal failed due to missing key\n"); 1134 return -EINVAL; 1135 } 1136 1137 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, (u16)(di->unseal_key >> 16), false); 1138 if (ret < 0) 1139 goto out; 1140 1141 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, (u16)di->unseal_key, false); 1142 if (ret < 0) 1143 goto out; 1144 1145 return 0; 1146 1147out: 1148 dev_err(di->dev, "bus error on unseal: %d\n", ret); 1149 return ret; 1150} 1151 1152static u8 bq27xxx_battery_checksum_dm_block(struct bq27xxx_dm_buf *buf) 1153{ 1154 u16 sum = 0; 1155 int i; 1156 1157 for (i = 0; i < BQ27XXX_DM_SZ; i++) 1158 sum += buf->data[i]; 1159 sum &= 0xff; 1160 1161 return 0xff - sum; 1162} 1163 1164static int bq27xxx_battery_read_dm_block(struct bq27xxx_device_info *di, 1165 struct bq27xxx_dm_buf *buf) 1166{ 1167 int ret; 1168 1169 buf->has_data = false; 1170 1171 ret = bq27xxx_write(di, BQ27XXX_DM_CLASS, buf->class, true); 1172 if (ret < 0) 1173 goto out; 1174 1175 ret = bq27xxx_write(di, BQ27XXX_DM_BLOCK, buf->block, true); 1176 if (ret < 0) 1177 goto out; 1178 1179 BQ27XXX_MSLEEP(1); 1180 1181 ret = bq27xxx_read_block(di, BQ27XXX_DM_DATA, buf->data, BQ27XXX_DM_SZ); 1182 if (ret < 0) 1183 goto out; 1184 1185 ret = bq27xxx_read(di, BQ27XXX_DM_CKSUM, true); 1186 if (ret < 0) 1187 goto out; 1188 1189 if ((u8)ret != bq27xxx_battery_checksum_dm_block(buf)) { 1190 ret = -EINVAL; 1191 goto out; 1192 } 1193 1194 buf->has_data = true; 1195 buf->dirty = false; 1196 1197 return 0; 1198 1199out: 1200 dev_err(di->dev, "bus error reading chip memory: %d\n", ret); 1201 return ret; 1202} 1203 1204static void bq27xxx_battery_update_dm_block(struct bq27xxx_device_info *di, 1205 struct bq27xxx_dm_buf *buf, 1206 enum bq27xxx_dm_reg_id reg_id, 1207 unsigned int val) 1208{ 1209 struct bq27xxx_dm_reg *reg = &di->dm_regs[reg_id]; 1210 const char *str = bq27xxx_dm_reg_name[reg_id]; 1211 u16 *prev = bq27xxx_dm_reg_ptr(buf, reg); 1212 1213 if (prev == NULL) { 1214 dev_warn(di->dev, "buffer does not match %s dm spec\n", str); 1215 return; 1216 } 1217 1218 if (reg->bytes != 2) { 1219 dev_warn(di->dev, "%s dm spec has unsupported byte size\n", str); 1220 return; 1221 } 1222 1223 if (!buf->has_data) 1224 return; 1225 1226 if (be16_to_cpup(prev) == val) { 1227 dev_info(di->dev, "%s has %u\n", str, val); 1228 return; 1229 } 1230 1231#ifdef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM 1232 if (!(di->opts & BQ27XXX_O_RAM) && !bq27xxx_dt_to_nvm) { 1233#else 1234 if (!(di->opts & BQ27XXX_O_RAM)) { 1235#endif 1236 /* devicetree and NVM differ; defer to NVM */ 1237 dev_warn(di->dev, "%s has %u; update to %u disallowed " 1238#ifdef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM 1239 "by dt_monitored_battery_updates_nvm=0" 1240#else 1241 "for flash/NVM data memory" 1242#endif 1243 "\n", str, be16_to_cpup(prev), val); 1244 return; 1245 } 1246 1247 dev_info(di->dev, "update %s to %u\n", str, val); 1248 1249 *prev = cpu_to_be16(val); 1250 buf->dirty = true; 1251} 1252 1253static int bq27xxx_battery_cfgupdate_priv(struct bq27xxx_device_info *di, bool active) 1254{ 1255 const int limit = 100; 1256 u16 cmd = active ? BQ27XXX_SET_CFGUPDATE : BQ27XXX_SOFT_RESET; 1257 int ret, try = limit; 1258 1259 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, cmd, false); 1260 if (ret < 0) 1261 return ret; 1262 1263 do { 1264 BQ27XXX_MSLEEP(25); 1265 ret = bq27xxx_read(di, BQ27XXX_REG_FLAGS, false); 1266 if (ret < 0) 1267 return ret; 1268 } while (!!(ret & BQ27XXX_FLAG_CFGUP) != active && --try); 1269 1270 if (!try && di->chip != BQ27425) { // 425 has a bug 1271 dev_err(di->dev, "timed out waiting for cfgupdate flag %d\n", active); 1272 return -EINVAL; 1273 } 1274 1275 if (limit - try > 3) 1276 dev_warn(di->dev, "cfgupdate %d, retries %d\n", active, limit - try); 1277 1278 return 0; 1279} 1280 1281static inline int bq27xxx_battery_set_cfgupdate(struct bq27xxx_device_info *di) 1282{ 1283 int ret = bq27xxx_battery_cfgupdate_priv(di, true); 1284 if (ret < 0 && ret != -EINVAL) 1285 dev_err(di->dev, "bus error on set_cfgupdate: %d\n", ret); 1286 1287 return ret; 1288} 1289 1290static inline int bq27xxx_battery_soft_reset(struct bq27xxx_device_info *di) 1291{ 1292 int ret = bq27xxx_battery_cfgupdate_priv(di, false); 1293 if (ret < 0 && ret != -EINVAL) 1294 dev_err(di->dev, "bus error on soft_reset: %d\n", ret); 1295 1296 return ret; 1297} 1298 1299static int bq27xxx_battery_write_dm_block(struct bq27xxx_device_info *di, 1300 struct bq27xxx_dm_buf *buf) 1301{ 1302 bool cfgup = di->opts & BQ27XXX_O_CFGUP; 1303 int ret; 1304 1305 if (!buf->dirty) 1306 return 0; 1307 1308 if (cfgup) { 1309 ret = bq27xxx_battery_set_cfgupdate(di); 1310 if (ret < 0) 1311 return ret; 1312 } 1313 1314 ret = bq27xxx_write(di, BQ27XXX_DM_CTRL, 0, true); 1315 if (ret < 0) 1316 goto out; 1317 1318 ret = bq27xxx_write(di, BQ27XXX_DM_CLASS, buf->class, true); 1319 if (ret < 0) 1320 goto out; 1321 1322 ret = bq27xxx_write(di, BQ27XXX_DM_BLOCK, buf->block, true); 1323 if (ret < 0) 1324 goto out; 1325 1326 BQ27XXX_MSLEEP(1); 1327 1328 ret = bq27xxx_write_block(di, BQ27XXX_DM_DATA, buf->data, BQ27XXX_DM_SZ); 1329 if (ret < 0) 1330 goto out; 1331 1332 ret = bq27xxx_write(di, BQ27XXX_DM_CKSUM, 1333 bq27xxx_battery_checksum_dm_block(buf), true); 1334 if (ret < 0) 1335 goto out; 1336 1337 /* DO NOT read BQ27XXX_DM_CKSUM here to verify it! That may cause NVM 1338 * corruption on the '425 chip (and perhaps others), which can damage 1339 * the chip. 1340 */ 1341 1342 if (cfgup) { 1343 BQ27XXX_MSLEEP(1); 1344 ret = bq27xxx_battery_soft_reset(di); 1345 if (ret < 0) 1346 return ret; 1347 } else { 1348 BQ27XXX_MSLEEP(100); /* flash DM updates in <100ms */ 1349 } 1350 1351 buf->dirty = false; 1352 1353 return 0; 1354 1355out: 1356 if (cfgup) 1357 bq27xxx_battery_soft_reset(di); 1358 1359 dev_err(di->dev, "bus error writing chip memory: %d\n", ret); 1360 return ret; 1361} 1362 1363static void bq27xxx_battery_set_config(struct bq27xxx_device_info *di, 1364 struct power_supply_battery_info *info) 1365{ 1366 struct bq27xxx_dm_buf bd = BQ27XXX_DM_BUF(di, BQ27XXX_DM_DESIGN_CAPACITY); 1367 struct bq27xxx_dm_buf bt = BQ27XXX_DM_BUF(di, BQ27XXX_DM_TERMINATE_VOLTAGE); 1368 bool updated; 1369 1370 if (bq27xxx_battery_unseal(di) < 0) 1371 return; 1372 1373 if (info->charge_full_design_uah != -EINVAL && 1374 info->energy_full_design_uwh != -EINVAL) { 1375 bq27xxx_battery_read_dm_block(di, &bd); 1376 /* assume design energy & capacity are in same block */ 1377 bq27xxx_battery_update_dm_block(di, &bd, 1378 BQ27XXX_DM_DESIGN_CAPACITY, 1379 info->charge_full_design_uah / 1000); 1380 bq27xxx_battery_update_dm_block(di, &bd, 1381 BQ27XXX_DM_DESIGN_ENERGY, 1382 info->energy_full_design_uwh / 1000); 1383 } 1384 1385 if (info->voltage_min_design_uv != -EINVAL) { 1386 bool same = bd.class == bt.class && bd.block == bt.block; 1387 if (!same) 1388 bq27xxx_battery_read_dm_block(di, &bt); 1389 bq27xxx_battery_update_dm_block(di, same ? &bd : &bt, 1390 BQ27XXX_DM_TERMINATE_VOLTAGE, 1391 info->voltage_min_design_uv / 1000); 1392 } 1393 1394 updated = bd.dirty || bt.dirty; 1395 1396 bq27xxx_battery_write_dm_block(di, &bd); 1397 bq27xxx_battery_write_dm_block(di, &bt); 1398 1399 bq27xxx_battery_seal(di); 1400 1401 if (updated && !(di->opts & BQ27XXX_O_CFGUP)) { 1402 bq27xxx_write(di, BQ27XXX_REG_CTRL, BQ27XXX_RESET, false); 1403 BQ27XXX_MSLEEP(300); /* reset time is not documented */ 1404 } 1405 /* assume bq27xxx_battery_update() is called hereafter */ 1406} 1407 1408static void bq27xxx_battery_settings(struct bq27xxx_device_info *di) 1409{ 1410 struct power_supply_battery_info info = {}; 1411 unsigned int min, max; 1412 1413 if (power_supply_get_battery_info(di->bat, &info) < 0) 1414 return; 1415 1416 if (!di->dm_regs) { 1417 dev_warn(di->dev, "data memory update not supported for chip\n"); 1418 return; 1419 } 1420 1421 if (info.energy_full_design_uwh != info.charge_full_design_uah) { 1422 if (info.energy_full_design_uwh == -EINVAL) 1423 dev_warn(di->dev, "missing battery:energy-full-design-microwatt-hours\n"); 1424 else if (info.charge_full_design_uah == -EINVAL) 1425 dev_warn(di->dev, "missing battery:charge-full-design-microamp-hours\n"); 1426 } 1427 1428 /* assume min == 0 */ 1429 max = di->dm_regs[BQ27XXX_DM_DESIGN_ENERGY].max; 1430 if (info.energy_full_design_uwh > max * 1000) { 1431 dev_err(di->dev, "invalid battery:energy-full-design-microwatt-hours %d\n", 1432 info.energy_full_design_uwh); 1433 info.energy_full_design_uwh = -EINVAL; 1434 } 1435 1436 /* assume min == 0 */ 1437 max = di->dm_regs[BQ27XXX_DM_DESIGN_CAPACITY].max; 1438 if (info.charge_full_design_uah > max * 1000) { 1439 dev_err(di->dev, "invalid battery:charge-full-design-microamp-hours %d\n", 1440 info.charge_full_design_uah); 1441 info.charge_full_design_uah = -EINVAL; 1442 } 1443 1444 min = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].min; 1445 max = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].max; 1446 if ((info.voltage_min_design_uv < min * 1000 || 1447 info.voltage_min_design_uv > max * 1000) && 1448 info.voltage_min_design_uv != -EINVAL) { 1449 dev_err(di->dev, "invalid battery:voltage-min-design-microvolt %d\n", 1450 info.voltage_min_design_uv); 1451 info.voltage_min_design_uv = -EINVAL; 1452 } 1453 1454 if ((info.energy_full_design_uwh != -EINVAL && 1455 info.charge_full_design_uah != -EINVAL) || 1456 info.voltage_min_design_uv != -EINVAL) 1457 bq27xxx_battery_set_config(di, &info); 1458} 1459 1460/* 1461 * Return the battery State-of-Charge 1462 * Or < 0 if something fails. 1463 */ 1464static int bq27xxx_battery_read_soc(struct bq27xxx_device_info *di) 1465{ 1466 int soc; 1467 1468 if (di->opts & BQ27XXX_O_SOC_SI) 1469 soc = bq27xxx_read(di, BQ27XXX_REG_SOC, true); 1470 else 1471 soc = bq27xxx_read(di, BQ27XXX_REG_SOC, false); 1472 1473 if (soc < 0) 1474 dev_dbg(di->dev, "error reading State-of-Charge\n"); 1475 1476 return soc; 1477} 1478 1479/* 1480 * Return a battery charge value in µAh 1481 * Or < 0 if something fails. 1482 */ 1483static int bq27xxx_battery_read_charge(struct bq27xxx_device_info *di, u8 reg) 1484{ 1485 int charge; 1486 1487 charge = bq27xxx_read(di, reg, false); 1488 if (charge < 0) { 1489 dev_dbg(di->dev, "error reading charge register %02x: %d\n", 1490 reg, charge); 1491 return charge; 1492 } 1493 1494 if (di->opts & BQ27XXX_O_ZERO) 1495 charge *= BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS; 1496 else 1497 charge *= 1000; 1498 1499 return charge; 1500} 1501 1502/* 1503 * Return the battery Nominal available capacity in µAh 1504 * Or < 0 if something fails. 1505 */ 1506static inline int bq27xxx_battery_read_nac(struct bq27xxx_device_info *di) 1507{ 1508 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_NAC); 1509} 1510 1511/* 1512 * Return the battery Full Charge Capacity in µAh 1513 * Or < 0 if something fails. 1514 */ 1515static inline int bq27xxx_battery_read_fcc(struct bq27xxx_device_info *di) 1516{ 1517 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_FCC); 1518} 1519 1520/* 1521 * Return the Design Capacity in µAh 1522 * Or < 0 if something fails. 1523 */ 1524static int bq27xxx_battery_read_dcap(struct bq27xxx_device_info *di) 1525{ 1526 int dcap; 1527 1528 if (di->opts & BQ27XXX_O_ZERO) 1529 dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, true); 1530 else 1531 dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, false); 1532 1533 if (dcap < 0) { 1534 dev_dbg(di->dev, "error reading initial last measured discharge\n"); 1535 return dcap; 1536 } 1537 1538 if (di->opts & BQ27XXX_O_ZERO) 1539 dcap = (dcap << 8) * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS; 1540 else 1541 dcap *= 1000; 1542 1543 return dcap; 1544} 1545 1546/* 1547 * Return the battery Available energy in µWh 1548 * Or < 0 if something fails. 1549 */ 1550static int bq27xxx_battery_read_energy(struct bq27xxx_device_info *di) 1551{ 1552 int ae; 1553 1554 ae = bq27xxx_read(di, BQ27XXX_REG_AE, false); 1555 if (ae < 0) { 1556 dev_dbg(di->dev, "error reading available energy\n"); 1557 return ae; 1558 } 1559 1560 if (di->opts & BQ27XXX_O_ZERO) 1561 ae *= BQ27XXX_POWER_CONSTANT / BQ27XXX_RS; 1562 else 1563 ae *= 1000; 1564 1565 return ae; 1566} 1567 1568/* 1569 * Return the battery temperature in tenths of degree Kelvin 1570 * Or < 0 if something fails. 1571 */ 1572static int bq27xxx_battery_read_temperature(struct bq27xxx_device_info *di) 1573{ 1574 int temp; 1575 1576 temp = bq27xxx_read(di, BQ27XXX_REG_TEMP, false); 1577 if (temp < 0) { 1578 dev_err(di->dev, "error reading temperature\n"); 1579 return temp; 1580 } 1581 1582 if (di->opts & BQ27XXX_O_ZERO) 1583 temp = 5 * temp / 2; 1584 1585 return temp; 1586} 1587 1588/* 1589 * Return the battery Cycle count total 1590 * Or < 0 if something fails. 1591 */ 1592static int bq27xxx_battery_read_cyct(struct bq27xxx_device_info *di) 1593{ 1594 int cyct; 1595 1596 cyct = bq27xxx_read(di, BQ27XXX_REG_CYCT, false); 1597 if (cyct < 0) 1598 dev_err(di->dev, "error reading cycle count total\n"); 1599 1600 return cyct; 1601} 1602 1603/* 1604 * Read a time register. 1605 * Return < 0 if something fails. 1606 */ 1607static int bq27xxx_battery_read_time(struct bq27xxx_device_info *di, u8 reg) 1608{ 1609 int tval; 1610 1611 tval = bq27xxx_read(di, reg, false); 1612 if (tval < 0) { 1613 dev_dbg(di->dev, "error reading time register %02x: %d\n", 1614 reg, tval); 1615 return tval; 1616 } 1617 1618 if (tval == 65535) 1619 return -ENODATA; 1620 1621 return tval * 60; 1622} 1623 1624/* 1625 * Returns true if a battery over temperature condition is detected 1626 */ 1627static bool bq27xxx_battery_overtemp(struct bq27xxx_device_info *di, u16 flags) 1628{ 1629 if (di->opts & BQ27XXX_O_OTDC) 1630 return flags & (BQ27XXX_FLAG_OTC | BQ27XXX_FLAG_OTD); 1631 if (di->opts & BQ27XXX_O_UTOT) 1632 return flags & BQ27XXX_FLAG_OT; 1633 1634 return false; 1635} 1636 1637/* 1638 * Returns true if a battery under temperature condition is detected 1639 */ 1640static bool bq27xxx_battery_undertemp(struct bq27xxx_device_info *di, u16 flags) 1641{ 1642 if (di->opts & BQ27XXX_O_UTOT) 1643 return flags & BQ27XXX_FLAG_UT; 1644 1645 return false; 1646} 1647 1648/* 1649 * Returns true if a low state of charge condition is detected 1650 */ 1651static bool bq27xxx_battery_dead(struct bq27xxx_device_info *di, u16 flags) 1652{ 1653 if (di->opts & BQ27XXX_O_ZERO) 1654 return flags & (BQ27000_FLAG_EDV1 | BQ27000_FLAG_EDVF); 1655 else if (di->opts & BQ27Z561_O_BITS) 1656 return flags & BQ27Z561_FLAG_FDC; 1657 else 1658 return flags & (BQ27XXX_FLAG_SOC1 | BQ27XXX_FLAG_SOCF); 1659} 1660 1661/* 1662 * Returns true if reported battery capacity is inaccurate 1663 */ 1664static bool bq27xxx_battery_capacity_inaccurate(struct bq27xxx_device_info *di, 1665 u16 flags) 1666{ 1667 if (di->opts & BQ27XXX_O_HAS_CI) 1668 return (flags & BQ27000_FLAG_CI); 1669 else 1670 return false; 1671} 1672 1673static int bq27xxx_battery_read_health(struct bq27xxx_device_info *di) 1674{ 1675 /* Unlikely but important to return first */ 1676 if (unlikely(bq27xxx_battery_overtemp(di, di->cache.flags))) 1677 return POWER_SUPPLY_HEALTH_OVERHEAT; 1678 if (unlikely(bq27xxx_battery_undertemp(di, di->cache.flags))) 1679 return POWER_SUPPLY_HEALTH_COLD; 1680 if (unlikely(bq27xxx_battery_dead(di, di->cache.flags))) 1681 return POWER_SUPPLY_HEALTH_DEAD; 1682 if (unlikely(bq27xxx_battery_capacity_inaccurate(di, di->cache.flags))) 1683 return POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED; 1684 1685 return POWER_SUPPLY_HEALTH_GOOD; 1686} 1687 1688static bool bq27xxx_battery_is_full(struct bq27xxx_device_info *di, int flags) 1689{ 1690 if (di->opts & BQ27XXX_O_ZERO) 1691 return (flags & BQ27000_FLAG_FC); 1692 else if (di->opts & BQ27Z561_O_BITS) 1693 return (flags & BQ27Z561_FLAG_FC); 1694 else 1695 return (flags & BQ27XXX_FLAG_FC); 1696} 1697 1698/* 1699 * Return the battery average current in µA and the status 1700 * Note that current can be negative signed as well 1701 * Or 0 if something fails. 1702 */ 1703static int bq27xxx_battery_current_and_status( 1704 struct bq27xxx_device_info *di, 1705 union power_supply_propval *val_curr, 1706 union power_supply_propval *val_status, 1707 struct bq27xxx_reg_cache *cache) 1708{ 1709 bool single_flags = (di->opts & BQ27XXX_O_ZERO); 1710 int curr; 1711 int flags; 1712 1713 curr = bq27xxx_read(di, BQ27XXX_REG_AI, false); 1714 if (curr < 0) { 1715 dev_err(di->dev, "error reading current\n"); 1716 return curr; 1717 } 1718 1719 if (cache) { 1720 flags = cache->flags; 1721 } else { 1722 flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, single_flags); 1723 if (flags < 0) { 1724 dev_err(di->dev, "error reading flags\n"); 1725 return flags; 1726 } 1727 } 1728 1729 if (di->opts & BQ27XXX_O_ZERO) { 1730 if (!(flags & BQ27000_FLAG_CHGS)) { 1731 dev_dbg(di->dev, "negative current!\n"); 1732 curr = -curr; 1733 } 1734 1735 curr = curr * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS; 1736 } else { 1737 /* Other gauges return signed value */ 1738 curr = (int)((s16)curr) * 1000; 1739 } 1740 1741 if (val_curr) 1742 val_curr->intval = curr; 1743 1744 if (val_status) { 1745 if (curr > 0) { 1746 val_status->intval = POWER_SUPPLY_STATUS_CHARGING; 1747 } else if (curr < 0) { 1748 val_status->intval = POWER_SUPPLY_STATUS_DISCHARGING; 1749 } else { 1750 if (bq27xxx_battery_is_full(di, flags)) 1751 val_status->intval = POWER_SUPPLY_STATUS_FULL; 1752 else 1753 val_status->intval = 1754 POWER_SUPPLY_STATUS_NOT_CHARGING; 1755 } 1756 } 1757 1758 return 0; 1759} 1760 1761static void bq27xxx_battery_update_unlocked(struct bq27xxx_device_info *di) 1762{ 1763 union power_supply_propval status = di->last_status; 1764 struct bq27xxx_reg_cache cache = {0, }; 1765 bool has_singe_flag = di->opts & BQ27XXX_O_ZERO; 1766 1767 cache.flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, has_singe_flag); 1768 if ((cache.flags & 0xff) == 0xff) 1769 cache.flags = -1; /* read error */ 1770 if (cache.flags >= 0) { 1771 cache.temperature = bq27xxx_battery_read_temperature(di); 1772 if (di->regs[BQ27XXX_REG_TTE] != INVALID_REG_ADDR) 1773 cache.time_to_empty = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTE); 1774 if (di->regs[BQ27XXX_REG_TTECP] != INVALID_REG_ADDR) 1775 cache.time_to_empty_avg = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTECP); 1776 if (di->regs[BQ27XXX_REG_TTF] != INVALID_REG_ADDR) 1777 cache.time_to_full = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTF); 1778 1779 cache.charge_full = bq27xxx_battery_read_fcc(di); 1780 cache.capacity = bq27xxx_battery_read_soc(di); 1781 if (di->regs[BQ27XXX_REG_AE] != INVALID_REG_ADDR) 1782 cache.energy = bq27xxx_battery_read_energy(di); 1783 di->cache.flags = cache.flags; 1784 cache.health = bq27xxx_battery_read_health(di); 1785 if (di->regs[BQ27XXX_REG_CYCT] != INVALID_REG_ADDR) 1786 cache.cycle_count = bq27xxx_battery_read_cyct(di); 1787 1788 /* 1789 * On gauges with signed current reporting the current must be 1790 * checked to detect charging <-> discharging status changes. 1791 */ 1792 if (!(di->opts & BQ27XXX_O_ZERO)) 1793 bq27xxx_battery_current_and_status(di, NULL, &status, &cache); 1794 1795 /* We only have to read charge design full once */ 1796 if (di->charge_design_full <= 0) 1797 di->charge_design_full = bq27xxx_battery_read_dcap(di); 1798 } 1799 1800 if ((di->cache.capacity != cache.capacity) || 1801 (di->cache.flags != cache.flags) || 1802 (di->last_status.intval != status.intval)) { 1803 di->last_status.intval = status.intval; 1804 power_supply_changed(di->bat); 1805 } 1806 1807 if (memcmp(&di->cache, &cache, sizeof(cache)) != 0) 1808 di->cache = cache; 1809 1810 di->last_update = jiffies; 1811 1812 if (!di->removed && poll_interval > 0) 1813 mod_delayed_work(system_wq, &di->work, poll_interval * HZ); 1814} 1815 1816void bq27xxx_battery_update(struct bq27xxx_device_info *di) 1817{ 1818 mutex_lock(&di->lock); 1819 bq27xxx_battery_update_unlocked(di); 1820 mutex_unlock(&di->lock); 1821} 1822EXPORT_SYMBOL_GPL(bq27xxx_battery_update); 1823 1824static void bq27xxx_battery_poll(struct work_struct *work) 1825{ 1826 struct bq27xxx_device_info *di = 1827 container_of(work, struct bq27xxx_device_info, 1828 work.work); 1829 1830 bq27xxx_battery_update(di); 1831} 1832 1833/* 1834 * Get the average power in µW 1835 * Return < 0 if something fails. 1836 */ 1837static int bq27xxx_battery_pwr_avg(struct bq27xxx_device_info *di, 1838 union power_supply_propval *val) 1839{ 1840 int power; 1841 1842 power = bq27xxx_read(di, BQ27XXX_REG_AP, false); 1843 if (power < 0) { 1844 dev_err(di->dev, 1845 "error reading average power register %02x: %d\n", 1846 BQ27XXX_REG_AP, power); 1847 return power; 1848 } 1849 1850 if (di->opts & BQ27XXX_O_ZERO) 1851 val->intval = (power * BQ27XXX_POWER_CONSTANT) / BQ27XXX_RS; 1852 else 1853 /* Other gauges return a signed value in units of 10mW */ 1854 val->intval = (int)((s16)power) * 10000; 1855 1856 return 0; 1857} 1858 1859static int bq27xxx_battery_capacity_level(struct bq27xxx_device_info *di, 1860 union power_supply_propval *val) 1861{ 1862 int level; 1863 1864 if (di->opts & BQ27XXX_O_ZERO) { 1865 if (di->cache.flags & BQ27000_FLAG_FC) 1866 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; 1867 else if (di->cache.flags & BQ27000_FLAG_EDV1) 1868 level = POWER_SUPPLY_CAPACITY_LEVEL_LOW; 1869 else if (di->cache.flags & BQ27000_FLAG_EDVF) 1870 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 1871 else 1872 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 1873 } else if (di->opts & BQ27Z561_O_BITS) { 1874 if (di->cache.flags & BQ27Z561_FLAG_FC) 1875 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; 1876 else if (di->cache.flags & BQ27Z561_FLAG_FDC) 1877 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 1878 else 1879 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 1880 } else { 1881 if (di->cache.flags & BQ27XXX_FLAG_FC) 1882 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; 1883 else if (di->cache.flags & BQ27XXX_FLAG_SOC1) 1884 level = POWER_SUPPLY_CAPACITY_LEVEL_LOW; 1885 else if (di->cache.flags & BQ27XXX_FLAG_SOCF) 1886 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 1887 else 1888 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 1889 } 1890 1891 val->intval = level; 1892 1893 return 0; 1894} 1895 1896/* 1897 * Return the battery Voltage in millivolts 1898 * Or < 0 if something fails. 1899 */ 1900static int bq27xxx_battery_voltage(struct bq27xxx_device_info *di, 1901 union power_supply_propval *val) 1902{ 1903 int volt; 1904 1905 volt = bq27xxx_read(di, BQ27XXX_REG_VOLT, false); 1906 if (volt < 0) { 1907 dev_err(di->dev, "error reading voltage\n"); 1908 return volt; 1909 } 1910 1911 val->intval = volt * 1000; 1912 1913 return 0; 1914} 1915 1916static int bq27xxx_simple_value(int value, 1917 union power_supply_propval *val) 1918{ 1919 if (value < 0) 1920 return value; 1921 1922 val->intval = value; 1923 1924 return 0; 1925} 1926 1927static int bq27xxx_battery_get_property(struct power_supply *psy, 1928 enum power_supply_property psp, 1929 union power_supply_propval *val) 1930{ 1931 int ret = 0; 1932 struct bq27xxx_device_info *di = power_supply_get_drvdata(psy); 1933 1934 mutex_lock(&di->lock); 1935 if (time_is_before_jiffies(di->last_update + 5 * HZ)) 1936 bq27xxx_battery_update_unlocked(di); 1937 mutex_unlock(&di->lock); 1938 1939 if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0) 1940 return -ENODEV; 1941 1942 switch (psp) { 1943 case POWER_SUPPLY_PROP_STATUS: 1944 ret = bq27xxx_battery_current_and_status(di, NULL, val, NULL); 1945 break; 1946 case POWER_SUPPLY_PROP_VOLTAGE_NOW: 1947 ret = bq27xxx_battery_voltage(di, val); 1948 break; 1949 case POWER_SUPPLY_PROP_PRESENT: 1950 val->intval = di->cache.flags < 0 ? 0 : 1; 1951 break; 1952 case POWER_SUPPLY_PROP_CURRENT_NOW: 1953 ret = bq27xxx_battery_current_and_status(di, val, NULL, NULL); 1954 break; 1955 case POWER_SUPPLY_PROP_CAPACITY: 1956 ret = bq27xxx_simple_value(di->cache.capacity, val); 1957 break; 1958 case POWER_SUPPLY_PROP_CAPACITY_LEVEL: 1959 ret = bq27xxx_battery_capacity_level(di, val); 1960 break; 1961 case POWER_SUPPLY_PROP_TEMP: 1962 ret = bq27xxx_simple_value(di->cache.temperature, val); 1963 if (ret == 0) 1964 val->intval -= 2731; /* convert decidegree k to c */ 1965 break; 1966 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: 1967 ret = bq27xxx_simple_value(di->cache.time_to_empty, val); 1968 break; 1969 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG: 1970 ret = bq27xxx_simple_value(di->cache.time_to_empty_avg, val); 1971 break; 1972 case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: 1973 ret = bq27xxx_simple_value(di->cache.time_to_full, val); 1974 break; 1975 case POWER_SUPPLY_PROP_TECHNOLOGY: 1976 if (di->opts & BQ27XXX_O_MUL_CHEM) 1977 val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN; 1978 else 1979 val->intval = POWER_SUPPLY_TECHNOLOGY_LION; 1980 break; 1981 case POWER_SUPPLY_PROP_CHARGE_NOW: 1982 ret = bq27xxx_simple_value(bq27xxx_battery_read_nac(di), val); 1983 break; 1984 case POWER_SUPPLY_PROP_CHARGE_FULL: 1985 ret = bq27xxx_simple_value(di->cache.charge_full, val); 1986 break; 1987 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: 1988 ret = bq27xxx_simple_value(di->charge_design_full, val); 1989 break; 1990 /* 1991 * TODO: Implement these to make registers set from 1992 * power_supply_battery_info visible in sysfs. 1993 */ 1994 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: 1995 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: 1996 return -EINVAL; 1997 case POWER_SUPPLY_PROP_CYCLE_COUNT: 1998 ret = bq27xxx_simple_value(di->cache.cycle_count, val); 1999 break; 2000 case POWER_SUPPLY_PROP_ENERGY_NOW: 2001 ret = bq27xxx_simple_value(di->cache.energy, val); 2002 break; 2003 case POWER_SUPPLY_PROP_POWER_AVG: 2004 ret = bq27xxx_battery_pwr_avg(di, val); 2005 break; 2006 case POWER_SUPPLY_PROP_HEALTH: 2007 ret = bq27xxx_simple_value(di->cache.health, val); 2008 break; 2009 case POWER_SUPPLY_PROP_MANUFACTURER: 2010 val->strval = BQ27XXX_MANUFACTURER; 2011 break; 2012 default: 2013 return -EINVAL; 2014 } 2015 2016 return ret; 2017} 2018 2019static void bq27xxx_external_power_changed(struct power_supply *psy) 2020{ 2021 struct bq27xxx_device_info *di = power_supply_get_drvdata(psy); 2022 2023 /* After charger plug in/out wait 0.5s for things to stabilize */ 2024 mod_delayed_work(system_wq, &di->work, HZ / 2); 2025} 2026 2027int bq27xxx_battery_setup(struct bq27xxx_device_info *di) 2028{ 2029 struct power_supply_desc *psy_desc; 2030 struct power_supply_config psy_cfg = { 2031 .of_node = di->dev->of_node, 2032 .drv_data = di, 2033 }; 2034 2035 INIT_DELAYED_WORK(&di->work, bq27xxx_battery_poll); 2036 mutex_init(&di->lock); 2037 2038 di->regs = bq27xxx_chip_data[di->chip].regs; 2039 di->unseal_key = bq27xxx_chip_data[di->chip].unseal_key; 2040 di->dm_regs = bq27xxx_chip_data[di->chip].dm_regs; 2041 di->opts = bq27xxx_chip_data[di->chip].opts; 2042 2043 psy_desc = devm_kzalloc(di->dev, sizeof(*psy_desc), GFP_KERNEL); 2044 if (!psy_desc) 2045 return -ENOMEM; 2046 2047 psy_desc->name = di->name; 2048 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 2049 psy_desc->properties = bq27xxx_chip_data[di->chip].props; 2050 psy_desc->num_properties = bq27xxx_chip_data[di->chip].props_size; 2051 psy_desc->get_property = bq27xxx_battery_get_property; 2052 psy_desc->external_power_changed = bq27xxx_external_power_changed; 2053 2054 di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg); 2055 if (IS_ERR(di->bat)) 2056 return dev_err_probe(di->dev, PTR_ERR(di->bat), 2057 "failed to register battery\n"); 2058 2059 bq27xxx_battery_settings(di); 2060 bq27xxx_battery_update(di); 2061 2062 mutex_lock(&bq27xxx_list_lock); 2063 list_add(&di->list, &bq27xxx_battery_devices); 2064 mutex_unlock(&bq27xxx_list_lock); 2065 2066 return 0; 2067} 2068EXPORT_SYMBOL_GPL(bq27xxx_battery_setup); 2069 2070void bq27xxx_battery_teardown(struct bq27xxx_device_info *di) 2071{ 2072 mutex_lock(&bq27xxx_list_lock); 2073 list_del(&di->list); 2074 mutex_unlock(&bq27xxx_list_lock); 2075 2076 /* Set removed to avoid bq27xxx_battery_update() re-queuing the work */ 2077 mutex_lock(&di->lock); 2078 di->removed = true; 2079 mutex_unlock(&di->lock); 2080 2081 cancel_delayed_work_sync(&di->work); 2082 2083 power_supply_unregister(di->bat); 2084 mutex_destroy(&di->lock); 2085} 2086EXPORT_SYMBOL_GPL(bq27xxx_battery_teardown); 2087 2088MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>"); 2089MODULE_DESCRIPTION("BQ27xxx battery monitor driver"); 2090MODULE_LICENSE("GPL"); 2091