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 * https://www.ti.com/product/bq78z100 43 */ 44 45 #include <linux/device.h> 46 #include <linux/module.h> 47 #include <linux/mutex.h> 48 #include <linux/param.h> 49 #include <linux/jiffies.h> 50 #include <linux/workqueue.h> 51 #include <linux/delay.h> 52 #include <linux/platform_device.h> 53 #include <linux/power_supply.h> 54 #include <linux/slab.h> 55 #include <linux/of.h> 56 57 #include <linux/power/bq27xxx_battery.h> 58 59 #define BQ27XXX_MANUFACTURER "Texas Instruments" 60 61 /* BQ27XXX Flags */ 62 #define BQ27XXX_FLAG_DSC BIT(0) 63 #define BQ27XXX_FLAG_SOCF BIT(1) /* State-of-Charge threshold final */ 64 #define BQ27XXX_FLAG_SOC1 BIT(2) /* State-of-Charge threshold 1 */ 65 #define BQ27XXX_FLAG_CFGUP BIT(4) 66 #define BQ27XXX_FLAG_FC BIT(9) 67 #define BQ27XXX_FLAG_OTD BIT(14) 68 #define BQ27XXX_FLAG_OTC BIT(15) 69 #define BQ27XXX_FLAG_UT BIT(14) 70 #define BQ27XXX_FLAG_OT BIT(15) 71 72 /* BQ27000 has different layout for Flags register */ 73 #define BQ27000_FLAG_EDVF BIT(0) /* Final End-of-Discharge-Voltage flag */ 74 #define BQ27000_FLAG_EDV1 BIT(1) /* First End-of-Discharge-Voltage flag */ 75 #define BQ27000_FLAG_CI BIT(4) /* Capacity Inaccurate flag */ 76 #define BQ27000_FLAG_FC BIT(5) 77 #define BQ27000_FLAG_CHGS BIT(7) /* Charge state flag */ 78 79 /* BQ27Z561 has different layout for Flags register */ 80 #define BQ27Z561_FLAG_FDC BIT(4) /* Battery fully discharged */ 81 #define BQ27Z561_FLAG_FC BIT(5) /* Battery fully charged */ 82 #define BQ27Z561_FLAG_DIS_CH BIT(6) /* Battery is discharging */ 83 84 /* control register params */ 85 #define BQ27XXX_SEALED 0x20 86 #define BQ27XXX_SET_CFGUPDATE 0x13 87 #define BQ27XXX_SOFT_RESET 0x42 88 #define BQ27XXX_RESET 0x41 89 90 #define BQ27XXX_RS (20) /* Resistor sense mOhm */ 91 #define BQ27XXX_POWER_CONSTANT (29200) /* 29.2 µV^2 * 1000 */ 92 #define BQ27XXX_CURRENT_CONSTANT (3570) /* 3.57 µV * 1000 */ 93 94 #define INVALID_REG_ADDR 0xff 95 96 /* 97 * bq27xxx_reg_index - Register names 98 * 99 * These are indexes into a device's register mapping array. 100 */ 101 102 enum bq27xxx_reg_index { 103 BQ27XXX_REG_CTRL = 0, /* Control */ 104 BQ27XXX_REG_TEMP, /* Temperature */ 105 BQ27XXX_REG_INT_TEMP, /* Internal Temperature */ 106 BQ27XXX_REG_VOLT, /* Voltage */ 107 BQ27XXX_REG_AI, /* Average Current */ 108 BQ27XXX_REG_FLAGS, /* Flags */ 109 BQ27XXX_REG_TTE, /* Time-to-Empty */ 110 BQ27XXX_REG_TTF, /* Time-to-Full */ 111 BQ27XXX_REG_TTES, /* Time-to-Empty Standby */ 112 BQ27XXX_REG_TTECP, /* Time-to-Empty at Constant Power */ 113 BQ27XXX_REG_NAC, /* Nominal Available Capacity */ 114 BQ27XXX_REG_RC, /* Remaining Capacity */ 115 BQ27XXX_REG_FCC, /* Full Charge Capacity */ 116 BQ27XXX_REG_CYCT, /* Cycle Count */ 117 BQ27XXX_REG_AE, /* Available Energy */ 118 BQ27XXX_REG_SOC, /* State-of-Charge */ 119 BQ27XXX_REG_DCAP, /* Design Capacity */ 120 BQ27XXX_REG_AP, /* Average Power */ 121 BQ27XXX_DM_CTRL, /* Block Data Control */ 122 BQ27XXX_DM_CLASS, /* Data Class */ 123 BQ27XXX_DM_BLOCK, /* Data Block */ 124 BQ27XXX_DM_DATA, /* Block Data */ 125 BQ27XXX_DM_CKSUM, /* Block Data Checksum */ 126 BQ27XXX_REG_MAX, /* sentinel */ 127 }; 128 129 #define BQ27XXX_DM_REG_ROWS \ 130 [BQ27XXX_DM_CTRL] = 0x61, \ 131 [BQ27XXX_DM_CLASS] = 0x3e, \ 132 [BQ27XXX_DM_BLOCK] = 0x3f, \ 133 [BQ27XXX_DM_DATA] = 0x40, \ 134 [BQ27XXX_DM_CKSUM] = 0x60 135 136 /* Register mappings */ 137 static u8 138 bq27000_regs[BQ27XXX_REG_MAX] = { 139 [BQ27XXX_REG_CTRL] = 0x00, 140 [BQ27XXX_REG_TEMP] = 0x06, 141 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 142 [BQ27XXX_REG_VOLT] = 0x08, 143 [BQ27XXX_REG_AI] = 0x14, 144 [BQ27XXX_REG_FLAGS] = 0x0a, 145 [BQ27XXX_REG_TTE] = 0x16, 146 [BQ27XXX_REG_TTF] = 0x18, 147 [BQ27XXX_REG_TTES] = 0x1c, 148 [BQ27XXX_REG_TTECP] = 0x26, 149 [BQ27XXX_REG_NAC] = 0x0c, 150 [BQ27XXX_REG_RC] = INVALID_REG_ADDR, 151 [BQ27XXX_REG_FCC] = 0x12, 152 [BQ27XXX_REG_CYCT] = 0x2a, 153 [BQ27XXX_REG_AE] = 0x22, 154 [BQ27XXX_REG_SOC] = 0x0b, 155 [BQ27XXX_REG_DCAP] = 0x76, 156 [BQ27XXX_REG_AP] = 0x24, 157 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR, 158 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR, 159 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR, 160 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR, 161 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR, 162 }, 163 bq27010_regs[BQ27XXX_REG_MAX] = { 164 [BQ27XXX_REG_CTRL] = 0x00, 165 [BQ27XXX_REG_TEMP] = 0x06, 166 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 167 [BQ27XXX_REG_VOLT] = 0x08, 168 [BQ27XXX_REG_AI] = 0x14, 169 [BQ27XXX_REG_FLAGS] = 0x0a, 170 [BQ27XXX_REG_TTE] = 0x16, 171 [BQ27XXX_REG_TTF] = 0x18, 172 [BQ27XXX_REG_TTES] = 0x1c, 173 [BQ27XXX_REG_TTECP] = 0x26, 174 [BQ27XXX_REG_NAC] = 0x0c, 175 [BQ27XXX_REG_RC] = INVALID_REG_ADDR, 176 [BQ27XXX_REG_FCC] = 0x12, 177 [BQ27XXX_REG_CYCT] = 0x2a, 178 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 179 [BQ27XXX_REG_SOC] = 0x0b, 180 [BQ27XXX_REG_DCAP] = 0x76, 181 [BQ27XXX_REG_AP] = INVALID_REG_ADDR, 182 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR, 183 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR, 184 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR, 185 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR, 186 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR, 187 }, 188 bq2750x_regs[BQ27XXX_REG_MAX] = { 189 [BQ27XXX_REG_CTRL] = 0x00, 190 [BQ27XXX_REG_TEMP] = 0x06, 191 [BQ27XXX_REG_INT_TEMP] = 0x28, 192 [BQ27XXX_REG_VOLT] = 0x08, 193 [BQ27XXX_REG_AI] = 0x14, 194 [BQ27XXX_REG_FLAGS] = 0x0a, 195 [BQ27XXX_REG_TTE] = 0x16, 196 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 197 [BQ27XXX_REG_TTES] = 0x1a, 198 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 199 [BQ27XXX_REG_NAC] = 0x0c, 200 [BQ27XXX_REG_RC] = 0x10, 201 [BQ27XXX_REG_FCC] = 0x12, 202 [BQ27XXX_REG_CYCT] = 0x2a, 203 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 204 [BQ27XXX_REG_SOC] = 0x2c, 205 [BQ27XXX_REG_DCAP] = 0x3c, 206 [BQ27XXX_REG_AP] = INVALID_REG_ADDR, 207 BQ27XXX_DM_REG_ROWS, 208 }, 209 #define bq2751x_regs bq27510g3_regs 210 #define bq2752x_regs bq27510g3_regs 211 bq27500_regs[BQ27XXX_REG_MAX] = { 212 [BQ27XXX_REG_CTRL] = 0x00, 213 [BQ27XXX_REG_TEMP] = 0x06, 214 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 215 [BQ27XXX_REG_VOLT] = 0x08, 216 [BQ27XXX_REG_AI] = 0x14, 217 [BQ27XXX_REG_FLAGS] = 0x0a, 218 [BQ27XXX_REG_TTE] = 0x16, 219 [BQ27XXX_REG_TTF] = 0x18, 220 [BQ27XXX_REG_TTES] = 0x1c, 221 [BQ27XXX_REG_TTECP] = 0x26, 222 [BQ27XXX_REG_NAC] = 0x0c, 223 [BQ27XXX_REG_RC] = 0x10, 224 [BQ27XXX_REG_FCC] = 0x12, 225 [BQ27XXX_REG_CYCT] = 0x2a, 226 [BQ27XXX_REG_AE] = 0x22, 227 [BQ27XXX_REG_SOC] = 0x2c, 228 [BQ27XXX_REG_DCAP] = 0x3c, 229 [BQ27XXX_REG_AP] = 0x24, 230 BQ27XXX_DM_REG_ROWS, 231 }, 232 #define bq27510g1_regs bq27500_regs 233 #define bq27510g2_regs bq27500_regs 234 bq27510g3_regs[BQ27XXX_REG_MAX] = { 235 [BQ27XXX_REG_CTRL] = 0x00, 236 [BQ27XXX_REG_TEMP] = 0x06, 237 [BQ27XXX_REG_INT_TEMP] = 0x28, 238 [BQ27XXX_REG_VOLT] = 0x08, 239 [BQ27XXX_REG_AI] = 0x14, 240 [BQ27XXX_REG_FLAGS] = 0x0a, 241 [BQ27XXX_REG_TTE] = 0x16, 242 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 243 [BQ27XXX_REG_TTES] = 0x1a, 244 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 245 [BQ27XXX_REG_NAC] = 0x0c, 246 [BQ27XXX_REG_RC] = 0x10, 247 [BQ27XXX_REG_FCC] = 0x12, 248 [BQ27XXX_REG_CYCT] = 0x1e, 249 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 250 [BQ27XXX_REG_SOC] = 0x20, 251 [BQ27XXX_REG_DCAP] = 0x2e, 252 [BQ27XXX_REG_AP] = INVALID_REG_ADDR, 253 BQ27XXX_DM_REG_ROWS, 254 }, 255 bq27520g1_regs[BQ27XXX_REG_MAX] = { 256 [BQ27XXX_REG_CTRL] = 0x00, 257 [BQ27XXX_REG_TEMP] = 0x06, 258 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 259 [BQ27XXX_REG_VOLT] = 0x08, 260 [BQ27XXX_REG_AI] = 0x14, 261 [BQ27XXX_REG_FLAGS] = 0x0a, 262 [BQ27XXX_REG_TTE] = 0x16, 263 [BQ27XXX_REG_TTF] = 0x18, 264 [BQ27XXX_REG_TTES] = 0x1c, 265 [BQ27XXX_REG_TTECP] = 0x26, 266 [BQ27XXX_REG_NAC] = 0x0c, 267 [BQ27XXX_REG_RC] = 0x10, 268 [BQ27XXX_REG_FCC] = 0x12, 269 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, 270 [BQ27XXX_REG_AE] = 0x22, 271 [BQ27XXX_REG_SOC] = 0x2c, 272 [BQ27XXX_REG_DCAP] = 0x3c, 273 [BQ27XXX_REG_AP] = 0x24, 274 BQ27XXX_DM_REG_ROWS, 275 }, 276 bq27520g2_regs[BQ27XXX_REG_MAX] = { 277 [BQ27XXX_REG_CTRL] = 0x00, 278 [BQ27XXX_REG_TEMP] = 0x06, 279 [BQ27XXX_REG_INT_TEMP] = 0x36, 280 [BQ27XXX_REG_VOLT] = 0x08, 281 [BQ27XXX_REG_AI] = 0x14, 282 [BQ27XXX_REG_FLAGS] = 0x0a, 283 [BQ27XXX_REG_TTE] = 0x16, 284 [BQ27XXX_REG_TTF] = 0x18, 285 [BQ27XXX_REG_TTES] = 0x1c, 286 [BQ27XXX_REG_TTECP] = 0x26, 287 [BQ27XXX_REG_NAC] = 0x0c, 288 [BQ27XXX_REG_RC] = 0x10, 289 [BQ27XXX_REG_FCC] = 0x12, 290 [BQ27XXX_REG_CYCT] = 0x2a, 291 [BQ27XXX_REG_AE] = 0x22, 292 [BQ27XXX_REG_SOC] = 0x2c, 293 [BQ27XXX_REG_DCAP] = 0x3c, 294 [BQ27XXX_REG_AP] = 0x24, 295 BQ27XXX_DM_REG_ROWS, 296 }, 297 bq27520g3_regs[BQ27XXX_REG_MAX] = { 298 [BQ27XXX_REG_CTRL] = 0x00, 299 [BQ27XXX_REG_TEMP] = 0x06, 300 [BQ27XXX_REG_INT_TEMP] = 0x36, 301 [BQ27XXX_REG_VOLT] = 0x08, 302 [BQ27XXX_REG_AI] = 0x14, 303 [BQ27XXX_REG_FLAGS] = 0x0a, 304 [BQ27XXX_REG_TTE] = 0x16, 305 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 306 [BQ27XXX_REG_TTES] = 0x1c, 307 [BQ27XXX_REG_TTECP] = 0x26, 308 [BQ27XXX_REG_NAC] = 0x0c, 309 [BQ27XXX_REG_RC] = 0x10, 310 [BQ27XXX_REG_FCC] = 0x12, 311 [BQ27XXX_REG_CYCT] = 0x2a, 312 [BQ27XXX_REG_AE] = 0x22, 313 [BQ27XXX_REG_SOC] = 0x2c, 314 [BQ27XXX_REG_DCAP] = 0x3c, 315 [BQ27XXX_REG_AP] = 0x24, 316 BQ27XXX_DM_REG_ROWS, 317 }, 318 bq27520g4_regs[BQ27XXX_REG_MAX] = { 319 [BQ27XXX_REG_CTRL] = 0x00, 320 [BQ27XXX_REG_TEMP] = 0x06, 321 [BQ27XXX_REG_INT_TEMP] = 0x28, 322 [BQ27XXX_REG_VOLT] = 0x08, 323 [BQ27XXX_REG_AI] = 0x14, 324 [BQ27XXX_REG_FLAGS] = 0x0a, 325 [BQ27XXX_REG_TTE] = 0x16, 326 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 327 [BQ27XXX_REG_TTES] = 0x1c, 328 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 329 [BQ27XXX_REG_NAC] = 0x0c, 330 [BQ27XXX_REG_RC] = 0x10, 331 [BQ27XXX_REG_FCC] = 0x12, 332 [BQ27XXX_REG_CYCT] = 0x1e, 333 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 334 [BQ27XXX_REG_SOC] = 0x20, 335 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR, 336 [BQ27XXX_REG_AP] = INVALID_REG_ADDR, 337 BQ27XXX_DM_REG_ROWS, 338 }, 339 bq27521_regs[BQ27XXX_REG_MAX] = { 340 [BQ27XXX_REG_CTRL] = 0x02, 341 [BQ27XXX_REG_TEMP] = 0x0a, 342 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 343 [BQ27XXX_REG_VOLT] = 0x0c, 344 [BQ27XXX_REG_AI] = 0x0e, 345 [BQ27XXX_REG_FLAGS] = 0x08, 346 [BQ27XXX_REG_TTE] = INVALID_REG_ADDR, 347 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 348 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 349 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 350 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 351 [BQ27XXX_REG_RC] = INVALID_REG_ADDR, 352 [BQ27XXX_REG_FCC] = INVALID_REG_ADDR, 353 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, 354 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 355 [BQ27XXX_REG_SOC] = INVALID_REG_ADDR, 356 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR, 357 [BQ27XXX_REG_AP] = INVALID_REG_ADDR, 358 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR, 359 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR, 360 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR, 361 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR, 362 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR, 363 }, 364 bq27530_regs[BQ27XXX_REG_MAX] = { 365 [BQ27XXX_REG_CTRL] = 0x00, 366 [BQ27XXX_REG_TEMP] = 0x06, 367 [BQ27XXX_REG_INT_TEMP] = 0x32, 368 [BQ27XXX_REG_VOLT] = 0x08, 369 [BQ27XXX_REG_AI] = 0x14, 370 [BQ27XXX_REG_FLAGS] = 0x0a, 371 [BQ27XXX_REG_TTE] = 0x16, 372 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 373 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 374 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 375 [BQ27XXX_REG_NAC] = 0x0c, 376 [BQ27XXX_REG_RC] = 0x10, 377 [BQ27XXX_REG_FCC] = 0x12, 378 [BQ27XXX_REG_CYCT] = 0x2a, 379 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 380 [BQ27XXX_REG_SOC] = 0x2c, 381 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR, 382 [BQ27XXX_REG_AP] = 0x24, 383 BQ27XXX_DM_REG_ROWS, 384 }, 385 #define bq27531_regs bq27530_regs 386 bq27541_regs[BQ27XXX_REG_MAX] = { 387 [BQ27XXX_REG_CTRL] = 0x00, 388 [BQ27XXX_REG_TEMP] = 0x06, 389 [BQ27XXX_REG_INT_TEMP] = 0x28, 390 [BQ27XXX_REG_VOLT] = 0x08, 391 [BQ27XXX_REG_AI] = 0x14, 392 [BQ27XXX_REG_FLAGS] = 0x0a, 393 [BQ27XXX_REG_TTE] = 0x16, 394 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 395 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 396 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 397 [BQ27XXX_REG_NAC] = 0x0c, 398 [BQ27XXX_REG_RC] = 0x10, 399 [BQ27XXX_REG_FCC] = 0x12, 400 [BQ27XXX_REG_CYCT] = 0x2a, 401 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 402 [BQ27XXX_REG_SOC] = 0x2c, 403 [BQ27XXX_REG_DCAP] = 0x3c, 404 [BQ27XXX_REG_AP] = 0x24, 405 BQ27XXX_DM_REG_ROWS, 406 }, 407 #define bq27542_regs bq27541_regs 408 #define bq27546_regs bq27541_regs 409 #define bq27742_regs bq27541_regs 410 bq27545_regs[BQ27XXX_REG_MAX] = { 411 [BQ27XXX_REG_CTRL] = 0x00, 412 [BQ27XXX_REG_TEMP] = 0x06, 413 [BQ27XXX_REG_INT_TEMP] = 0x28, 414 [BQ27XXX_REG_VOLT] = 0x08, 415 [BQ27XXX_REG_AI] = 0x14, 416 [BQ27XXX_REG_FLAGS] = 0x0a, 417 [BQ27XXX_REG_TTE] = 0x16, 418 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 419 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 420 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 421 [BQ27XXX_REG_NAC] = 0x0c, 422 [BQ27XXX_REG_RC] = 0x10, 423 [BQ27XXX_REG_FCC] = 0x12, 424 [BQ27XXX_REG_CYCT] = 0x2a, 425 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 426 [BQ27XXX_REG_SOC] = 0x2c, 427 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR, 428 [BQ27XXX_REG_AP] = 0x24, 429 BQ27XXX_DM_REG_ROWS, 430 }, 431 bq27421_regs[BQ27XXX_REG_MAX] = { 432 [BQ27XXX_REG_CTRL] = 0x00, 433 [BQ27XXX_REG_TEMP] = 0x02, 434 [BQ27XXX_REG_INT_TEMP] = 0x1e, 435 [BQ27XXX_REG_VOLT] = 0x04, 436 [BQ27XXX_REG_AI] = 0x10, 437 [BQ27XXX_REG_FLAGS] = 0x06, 438 [BQ27XXX_REG_TTE] = INVALID_REG_ADDR, 439 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 440 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 441 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 442 [BQ27XXX_REG_NAC] = 0x08, 443 [BQ27XXX_REG_RC] = 0x0c, 444 [BQ27XXX_REG_FCC] = 0x0e, 445 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, 446 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 447 [BQ27XXX_REG_SOC] = 0x1c, 448 [BQ27XXX_REG_DCAP] = 0x3c, 449 [BQ27XXX_REG_AP] = 0x18, 450 BQ27XXX_DM_REG_ROWS, 451 }, 452 bq27426_regs[BQ27XXX_REG_MAX] = { 453 [BQ27XXX_REG_CTRL] = 0x00, 454 [BQ27XXX_REG_TEMP] = 0x02, 455 [BQ27XXX_REG_INT_TEMP] = 0x1e, 456 [BQ27XXX_REG_VOLT] = 0x04, 457 [BQ27XXX_REG_AI] = 0x10, 458 [BQ27XXX_REG_FLAGS] = 0x06, 459 [BQ27XXX_REG_TTE] = INVALID_REG_ADDR, 460 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, 461 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 462 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 463 [BQ27XXX_REG_NAC] = 0x08, 464 [BQ27XXX_REG_RC] = 0x0c, 465 [BQ27XXX_REG_FCC] = 0x0e, 466 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, 467 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 468 [BQ27XXX_REG_SOC] = 0x1c, 469 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR, 470 [BQ27XXX_REG_AP] = 0x18, 471 BQ27XXX_DM_REG_ROWS, 472 }, 473 #define bq27411_regs bq27421_regs 474 #define bq27425_regs bq27421_regs 475 #define bq27441_regs bq27421_regs 476 #define bq27621_regs bq27421_regs 477 bq27z561_regs[BQ27XXX_REG_MAX] = { 478 [BQ27XXX_REG_CTRL] = 0x00, 479 [BQ27XXX_REG_TEMP] = 0x06, 480 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 481 [BQ27XXX_REG_VOLT] = 0x08, 482 [BQ27XXX_REG_AI] = 0x14, 483 [BQ27XXX_REG_FLAGS] = 0x0a, 484 [BQ27XXX_REG_TTE] = 0x16, 485 [BQ27XXX_REG_TTF] = 0x18, 486 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 487 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 488 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 489 [BQ27XXX_REG_RC] = 0x10, 490 [BQ27XXX_REG_FCC] = 0x12, 491 [BQ27XXX_REG_CYCT] = 0x2a, 492 [BQ27XXX_REG_AE] = 0x22, 493 [BQ27XXX_REG_SOC] = 0x2c, 494 [BQ27XXX_REG_DCAP] = 0x3c, 495 [BQ27XXX_REG_AP] = 0x22, 496 BQ27XXX_DM_REG_ROWS, 497 }, 498 bq28z610_regs[BQ27XXX_REG_MAX] = { 499 [BQ27XXX_REG_CTRL] = 0x00, 500 [BQ27XXX_REG_TEMP] = 0x06, 501 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 502 [BQ27XXX_REG_VOLT] = 0x08, 503 [BQ27XXX_REG_AI] = 0x14, 504 [BQ27XXX_REG_FLAGS] = 0x0a, 505 [BQ27XXX_REG_TTE] = 0x16, 506 [BQ27XXX_REG_TTF] = 0x18, 507 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 508 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 509 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 510 [BQ27XXX_REG_RC] = 0x10, 511 [BQ27XXX_REG_FCC] = 0x12, 512 [BQ27XXX_REG_CYCT] = 0x2a, 513 [BQ27XXX_REG_AE] = 0x22, 514 [BQ27XXX_REG_SOC] = 0x2c, 515 [BQ27XXX_REG_DCAP] = 0x3c, 516 [BQ27XXX_REG_AP] = 0x22, 517 BQ27XXX_DM_REG_ROWS, 518 }, 519 bq34z100_regs[BQ27XXX_REG_MAX] = { 520 [BQ27XXX_REG_CTRL] = 0x00, 521 [BQ27XXX_REG_TEMP] = 0x0c, 522 [BQ27XXX_REG_INT_TEMP] = 0x2a, 523 [BQ27XXX_REG_VOLT] = 0x08, 524 [BQ27XXX_REG_AI] = 0x0a, 525 [BQ27XXX_REG_FLAGS] = 0x0e, 526 [BQ27XXX_REG_TTE] = 0x18, 527 [BQ27XXX_REG_TTF] = 0x1a, 528 [BQ27XXX_REG_TTES] = 0x1e, 529 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 530 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 531 [BQ27XXX_REG_RC] = 0x04, 532 [BQ27XXX_REG_FCC] = 0x06, 533 [BQ27XXX_REG_CYCT] = 0x2c, 534 [BQ27XXX_REG_AE] = 0x24, 535 [BQ27XXX_REG_SOC] = 0x02, 536 [BQ27XXX_REG_DCAP] = 0x3c, 537 [BQ27XXX_REG_AP] = 0x22, 538 BQ27XXX_DM_REG_ROWS, 539 }, 540 bq78z100_regs[BQ27XXX_REG_MAX] = { 541 [BQ27XXX_REG_CTRL] = 0x00, 542 [BQ27XXX_REG_TEMP] = 0x06, 543 [BQ27XXX_REG_INT_TEMP] = 0x28, 544 [BQ27XXX_REG_VOLT] = 0x08, 545 [BQ27XXX_REG_AI] = 0x14, 546 [BQ27XXX_REG_FLAGS] = 0x0a, 547 [BQ27XXX_REG_TTE] = 0x16, 548 [BQ27XXX_REG_TTF] = 0x18, 549 [BQ27XXX_REG_TTES] = 0x1c, 550 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 551 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 552 [BQ27XXX_REG_RC] = 0x10, 553 [BQ27XXX_REG_FCC] = 0x12, 554 [BQ27XXX_REG_CYCT] = 0x2a, 555 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 556 [BQ27XXX_REG_SOC] = 0x2c, 557 [BQ27XXX_REG_DCAP] = 0x3c, 558 [BQ27XXX_REG_AP] = 0x22, 559 BQ27XXX_DM_REG_ROWS, 560 }; 561 562 static enum power_supply_property bq27000_props[] = { 563 POWER_SUPPLY_PROP_STATUS, 564 POWER_SUPPLY_PROP_PRESENT, 565 POWER_SUPPLY_PROP_VOLTAGE_NOW, 566 POWER_SUPPLY_PROP_CURRENT_NOW, 567 POWER_SUPPLY_PROP_CAPACITY, 568 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 569 POWER_SUPPLY_PROP_TEMP, 570 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 571 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 572 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 573 POWER_SUPPLY_PROP_TECHNOLOGY, 574 POWER_SUPPLY_PROP_CHARGE_FULL, 575 POWER_SUPPLY_PROP_CHARGE_NOW, 576 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 577 POWER_SUPPLY_PROP_CYCLE_COUNT, 578 POWER_SUPPLY_PROP_ENERGY_NOW, 579 POWER_SUPPLY_PROP_POWER_AVG, 580 POWER_SUPPLY_PROP_HEALTH, 581 POWER_SUPPLY_PROP_MANUFACTURER, 582 }; 583 584 static enum power_supply_property bq27010_props[] = { 585 POWER_SUPPLY_PROP_STATUS, 586 POWER_SUPPLY_PROP_PRESENT, 587 POWER_SUPPLY_PROP_VOLTAGE_NOW, 588 POWER_SUPPLY_PROP_CURRENT_NOW, 589 POWER_SUPPLY_PROP_CAPACITY, 590 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 591 POWER_SUPPLY_PROP_TEMP, 592 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 593 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 594 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 595 POWER_SUPPLY_PROP_TECHNOLOGY, 596 POWER_SUPPLY_PROP_CHARGE_FULL, 597 POWER_SUPPLY_PROP_CHARGE_NOW, 598 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 599 POWER_SUPPLY_PROP_CYCLE_COUNT, 600 POWER_SUPPLY_PROP_HEALTH, 601 POWER_SUPPLY_PROP_MANUFACTURER, 602 }; 603 604 #define bq2750x_props bq27510g3_props 605 #define bq2751x_props bq27510g3_props 606 #define bq2752x_props bq27510g3_props 607 608 static enum power_supply_property bq27500_props[] = { 609 POWER_SUPPLY_PROP_STATUS, 610 POWER_SUPPLY_PROP_PRESENT, 611 POWER_SUPPLY_PROP_VOLTAGE_NOW, 612 POWER_SUPPLY_PROP_CURRENT_NOW, 613 POWER_SUPPLY_PROP_CAPACITY, 614 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 615 POWER_SUPPLY_PROP_TEMP, 616 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 617 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 618 POWER_SUPPLY_PROP_TECHNOLOGY, 619 POWER_SUPPLY_PROP_CHARGE_FULL, 620 POWER_SUPPLY_PROP_CHARGE_NOW, 621 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 622 POWER_SUPPLY_PROP_CYCLE_COUNT, 623 POWER_SUPPLY_PROP_ENERGY_NOW, 624 POWER_SUPPLY_PROP_POWER_AVG, 625 POWER_SUPPLY_PROP_HEALTH, 626 POWER_SUPPLY_PROP_MANUFACTURER, 627 }; 628 #define bq27510g1_props bq27500_props 629 #define bq27510g2_props bq27500_props 630 631 static enum power_supply_property bq27510g3_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_CHARGE_FULL_DESIGN, 644 POWER_SUPPLY_PROP_CYCLE_COUNT, 645 POWER_SUPPLY_PROP_HEALTH, 646 POWER_SUPPLY_PROP_MANUFACTURER, 647 }; 648 649 static enum power_supply_property bq27520g1_props[] = { 650 POWER_SUPPLY_PROP_STATUS, 651 POWER_SUPPLY_PROP_PRESENT, 652 POWER_SUPPLY_PROP_VOLTAGE_NOW, 653 POWER_SUPPLY_PROP_CURRENT_NOW, 654 POWER_SUPPLY_PROP_CAPACITY, 655 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 656 POWER_SUPPLY_PROP_TEMP, 657 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 658 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 659 POWER_SUPPLY_PROP_TECHNOLOGY, 660 POWER_SUPPLY_PROP_CHARGE_FULL, 661 POWER_SUPPLY_PROP_CHARGE_NOW, 662 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 663 POWER_SUPPLY_PROP_ENERGY_NOW, 664 POWER_SUPPLY_PROP_POWER_AVG, 665 POWER_SUPPLY_PROP_HEALTH, 666 POWER_SUPPLY_PROP_MANUFACTURER, 667 }; 668 669 #define bq27520g2_props bq27500_props 670 671 static enum power_supply_property bq27520g3_props[] = { 672 POWER_SUPPLY_PROP_STATUS, 673 POWER_SUPPLY_PROP_PRESENT, 674 POWER_SUPPLY_PROP_VOLTAGE_NOW, 675 POWER_SUPPLY_PROP_CURRENT_NOW, 676 POWER_SUPPLY_PROP_CAPACITY, 677 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 678 POWER_SUPPLY_PROP_TEMP, 679 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 680 POWER_SUPPLY_PROP_TECHNOLOGY, 681 POWER_SUPPLY_PROP_CHARGE_FULL, 682 POWER_SUPPLY_PROP_CHARGE_NOW, 683 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 684 POWER_SUPPLY_PROP_CYCLE_COUNT, 685 POWER_SUPPLY_PROP_ENERGY_NOW, 686 POWER_SUPPLY_PROP_POWER_AVG, 687 POWER_SUPPLY_PROP_HEALTH, 688 POWER_SUPPLY_PROP_MANUFACTURER, 689 }; 690 691 static enum power_supply_property bq27520g4_props[] = { 692 POWER_SUPPLY_PROP_STATUS, 693 POWER_SUPPLY_PROP_PRESENT, 694 POWER_SUPPLY_PROP_VOLTAGE_NOW, 695 POWER_SUPPLY_PROP_CURRENT_NOW, 696 POWER_SUPPLY_PROP_CAPACITY, 697 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 698 POWER_SUPPLY_PROP_TEMP, 699 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 700 POWER_SUPPLY_PROP_TECHNOLOGY, 701 POWER_SUPPLY_PROP_CHARGE_FULL, 702 POWER_SUPPLY_PROP_CHARGE_NOW, 703 POWER_SUPPLY_PROP_CYCLE_COUNT, 704 POWER_SUPPLY_PROP_HEALTH, 705 POWER_SUPPLY_PROP_MANUFACTURER, 706 }; 707 708 static enum power_supply_property bq27521_props[] = { 709 POWER_SUPPLY_PROP_STATUS, 710 POWER_SUPPLY_PROP_PRESENT, 711 POWER_SUPPLY_PROP_VOLTAGE_NOW, 712 POWER_SUPPLY_PROP_CURRENT_NOW, 713 POWER_SUPPLY_PROP_TEMP, 714 POWER_SUPPLY_PROP_TECHNOLOGY, 715 }; 716 717 static enum power_supply_property bq27530_props[] = { 718 POWER_SUPPLY_PROP_STATUS, 719 POWER_SUPPLY_PROP_PRESENT, 720 POWER_SUPPLY_PROP_VOLTAGE_NOW, 721 POWER_SUPPLY_PROP_CURRENT_NOW, 722 POWER_SUPPLY_PROP_CAPACITY, 723 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 724 POWER_SUPPLY_PROP_TEMP, 725 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 726 POWER_SUPPLY_PROP_TECHNOLOGY, 727 POWER_SUPPLY_PROP_CHARGE_FULL, 728 POWER_SUPPLY_PROP_CHARGE_NOW, 729 POWER_SUPPLY_PROP_POWER_AVG, 730 POWER_SUPPLY_PROP_HEALTH, 731 POWER_SUPPLY_PROP_CYCLE_COUNT, 732 POWER_SUPPLY_PROP_MANUFACTURER, 733 }; 734 #define bq27531_props bq27530_props 735 736 static enum power_supply_property bq27541_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_TECHNOLOGY, 746 POWER_SUPPLY_PROP_CHARGE_FULL, 747 POWER_SUPPLY_PROP_CHARGE_NOW, 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 #define bq27542_props bq27541_props 755 #define bq27546_props bq27541_props 756 #define bq27742_props bq27541_props 757 758 static enum power_supply_property bq27545_props[] = { 759 POWER_SUPPLY_PROP_STATUS, 760 POWER_SUPPLY_PROP_PRESENT, 761 POWER_SUPPLY_PROP_VOLTAGE_NOW, 762 POWER_SUPPLY_PROP_CURRENT_NOW, 763 POWER_SUPPLY_PROP_CAPACITY, 764 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 765 POWER_SUPPLY_PROP_TEMP, 766 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 767 POWER_SUPPLY_PROP_TECHNOLOGY, 768 POWER_SUPPLY_PROP_CHARGE_FULL, 769 POWER_SUPPLY_PROP_CHARGE_NOW, 770 POWER_SUPPLY_PROP_HEALTH, 771 POWER_SUPPLY_PROP_CYCLE_COUNT, 772 POWER_SUPPLY_PROP_POWER_AVG, 773 POWER_SUPPLY_PROP_MANUFACTURER, 774 }; 775 776 static enum power_supply_property bq27421_props[] = { 777 POWER_SUPPLY_PROP_STATUS, 778 POWER_SUPPLY_PROP_PRESENT, 779 POWER_SUPPLY_PROP_VOLTAGE_NOW, 780 POWER_SUPPLY_PROP_CURRENT_NOW, 781 POWER_SUPPLY_PROP_CAPACITY, 782 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 783 POWER_SUPPLY_PROP_TEMP, 784 POWER_SUPPLY_PROP_TECHNOLOGY, 785 POWER_SUPPLY_PROP_CHARGE_FULL, 786 POWER_SUPPLY_PROP_CHARGE_NOW, 787 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 788 POWER_SUPPLY_PROP_MANUFACTURER, 789 }; 790 #define bq27411_props bq27421_props 791 #define bq27425_props bq27421_props 792 #define bq27441_props bq27421_props 793 #define bq27621_props bq27421_props 794 795 static enum power_supply_property bq27426_props[] = { 796 POWER_SUPPLY_PROP_STATUS, 797 POWER_SUPPLY_PROP_PRESENT, 798 POWER_SUPPLY_PROP_VOLTAGE_NOW, 799 POWER_SUPPLY_PROP_CURRENT_NOW, 800 POWER_SUPPLY_PROP_CAPACITY, 801 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 802 POWER_SUPPLY_PROP_TEMP, 803 POWER_SUPPLY_PROP_TECHNOLOGY, 804 POWER_SUPPLY_PROP_CHARGE_FULL, 805 POWER_SUPPLY_PROP_CHARGE_NOW, 806 POWER_SUPPLY_PROP_MANUFACTURER, 807 }; 808 809 static enum power_supply_property bq27z561_props[] = { 810 POWER_SUPPLY_PROP_STATUS, 811 POWER_SUPPLY_PROP_PRESENT, 812 POWER_SUPPLY_PROP_VOLTAGE_NOW, 813 POWER_SUPPLY_PROP_CURRENT_NOW, 814 POWER_SUPPLY_PROP_CAPACITY, 815 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 816 POWER_SUPPLY_PROP_TEMP, 817 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 818 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 819 POWER_SUPPLY_PROP_TECHNOLOGY, 820 POWER_SUPPLY_PROP_CHARGE_FULL, 821 POWER_SUPPLY_PROP_CHARGE_NOW, 822 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 823 POWER_SUPPLY_PROP_CYCLE_COUNT, 824 POWER_SUPPLY_PROP_POWER_AVG, 825 POWER_SUPPLY_PROP_HEALTH, 826 POWER_SUPPLY_PROP_MANUFACTURER, 827 }; 828 829 static enum power_supply_property bq28z610_props[] = { 830 POWER_SUPPLY_PROP_STATUS, 831 POWER_SUPPLY_PROP_PRESENT, 832 POWER_SUPPLY_PROP_VOLTAGE_NOW, 833 POWER_SUPPLY_PROP_CURRENT_NOW, 834 POWER_SUPPLY_PROP_CAPACITY, 835 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 836 POWER_SUPPLY_PROP_TEMP, 837 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 838 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 839 POWER_SUPPLY_PROP_TECHNOLOGY, 840 POWER_SUPPLY_PROP_CHARGE_FULL, 841 POWER_SUPPLY_PROP_CHARGE_NOW, 842 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 843 POWER_SUPPLY_PROP_CYCLE_COUNT, 844 POWER_SUPPLY_PROP_POWER_AVG, 845 POWER_SUPPLY_PROP_HEALTH, 846 POWER_SUPPLY_PROP_MANUFACTURER, 847 }; 848 849 static enum power_supply_property bq34z100_props[] = { 850 POWER_SUPPLY_PROP_STATUS, 851 POWER_SUPPLY_PROP_PRESENT, 852 POWER_SUPPLY_PROP_VOLTAGE_NOW, 853 POWER_SUPPLY_PROP_CURRENT_NOW, 854 POWER_SUPPLY_PROP_CAPACITY, 855 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 856 POWER_SUPPLY_PROP_TEMP, 857 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 858 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 859 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 860 POWER_SUPPLY_PROP_TECHNOLOGY, 861 POWER_SUPPLY_PROP_CHARGE_FULL, 862 POWER_SUPPLY_PROP_CHARGE_NOW, 863 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 864 POWER_SUPPLY_PROP_CYCLE_COUNT, 865 POWER_SUPPLY_PROP_ENERGY_NOW, 866 POWER_SUPPLY_PROP_POWER_AVG, 867 POWER_SUPPLY_PROP_HEALTH, 868 POWER_SUPPLY_PROP_MANUFACTURER, 869 }; 870 871 static enum power_supply_property bq78z100_props[] = { 872 POWER_SUPPLY_PROP_STATUS, 873 POWER_SUPPLY_PROP_PRESENT, 874 POWER_SUPPLY_PROP_VOLTAGE_NOW, 875 POWER_SUPPLY_PROP_CURRENT_NOW, 876 POWER_SUPPLY_PROP_CAPACITY, 877 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 878 POWER_SUPPLY_PROP_TEMP, 879 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 880 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 881 POWER_SUPPLY_PROP_TECHNOLOGY, 882 POWER_SUPPLY_PROP_CHARGE_FULL, 883 POWER_SUPPLY_PROP_CHARGE_NOW, 884 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 885 POWER_SUPPLY_PROP_CYCLE_COUNT, 886 POWER_SUPPLY_PROP_POWER_AVG, 887 POWER_SUPPLY_PROP_HEALTH, 888 POWER_SUPPLY_PROP_MANUFACTURER, 889 }; 890 891 struct bq27xxx_dm_reg { 892 u8 subclass_id; 893 u8 offset; 894 u8 bytes; 895 u16 min, max; 896 }; 897 898 enum bq27xxx_dm_reg_id { 899 BQ27XXX_DM_DESIGN_CAPACITY = 0, 900 BQ27XXX_DM_DESIGN_ENERGY, 901 BQ27XXX_DM_TERMINATE_VOLTAGE, 902 }; 903 904 #define bq27000_dm_regs NULL 905 #define bq27010_dm_regs NULL 906 #define bq2750x_dm_regs NULL 907 #define bq2751x_dm_regs NULL 908 #define bq2752x_dm_regs NULL 909 910 #if 0 /* not yet tested */ 911 static struct bq27xxx_dm_reg bq27500_dm_regs[] = { 912 [BQ27XXX_DM_DESIGN_CAPACITY] = { 48, 10, 2, 0, 65535 }, 913 [BQ27XXX_DM_DESIGN_ENERGY] = { }, /* missing on chip */ 914 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 48, 2, 1000, 32767 }, 915 }; 916 #else 917 #define bq27500_dm_regs NULL 918 #endif 919 920 /* todo create data memory definitions from datasheets and test on chips */ 921 #define bq27510g1_dm_regs NULL 922 #define bq27510g2_dm_regs NULL 923 #define bq27510g3_dm_regs NULL 924 #define bq27520g1_dm_regs NULL 925 #define bq27520g2_dm_regs NULL 926 #define bq27520g3_dm_regs NULL 927 #define bq27520g4_dm_regs NULL 928 #define bq27521_dm_regs NULL 929 #define bq27530_dm_regs NULL 930 #define bq27531_dm_regs NULL 931 #define bq27541_dm_regs NULL 932 #define bq27542_dm_regs NULL 933 #define bq27546_dm_regs NULL 934 #define bq27742_dm_regs NULL 935 936 #if 0 /* not yet tested */ 937 static struct bq27xxx_dm_reg bq27545_dm_regs[] = { 938 [BQ27XXX_DM_DESIGN_CAPACITY] = { 48, 23, 2, 0, 32767 }, 939 [BQ27XXX_DM_DESIGN_ENERGY] = { 48, 25, 2, 0, 32767 }, 940 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 67, 2, 2800, 3700 }, 941 }; 942 #else 943 #define bq27545_dm_regs NULL 944 #endif 945 946 static struct bq27xxx_dm_reg bq27411_dm_regs[] = { 947 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 10, 2, 0, 32767 }, 948 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 12, 2, 0, 32767 }, 949 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2800, 3700 }, 950 }; 951 952 static struct bq27xxx_dm_reg bq27421_dm_regs[] = { 953 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 10, 2, 0, 8000 }, 954 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 12, 2, 0, 32767 }, 955 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2500, 3700 }, 956 }; 957 958 static struct bq27xxx_dm_reg bq27425_dm_regs[] = { 959 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 12, 2, 0, 32767 }, 960 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 14, 2, 0, 32767 }, 961 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 18, 2, 2800, 3700 }, 962 }; 963 964 static struct bq27xxx_dm_reg bq27426_dm_regs[] = { 965 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 6, 2, 0, 8000 }, 966 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 8, 2, 0, 32767 }, 967 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 10, 2, 2500, 3700 }, 968 }; 969 970 #if 0 /* not yet tested */ 971 #define bq27441_dm_regs bq27421_dm_regs 972 #else 973 #define bq27441_dm_regs NULL 974 #endif 975 976 #if 0 /* not yet tested */ 977 static struct bq27xxx_dm_reg bq27621_dm_regs[] = { 978 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 3, 2, 0, 8000 }, 979 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 5, 2, 0, 32767 }, 980 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 9, 2, 2500, 3700 }, 981 }; 982 #else 983 #define bq27621_dm_regs NULL 984 #endif 985 986 #define bq27z561_dm_regs NULL 987 #define bq28z610_dm_regs NULL 988 #define bq34z100_dm_regs NULL 989 #define bq78z100_dm_regs NULL 990 991 #define BQ27XXX_O_ZERO BIT(0) 992 #define BQ27XXX_O_OTDC BIT(1) /* has OTC/OTD overtemperature flags */ 993 #define BQ27XXX_O_UTOT BIT(2) /* has OT overtemperature flag */ 994 #define BQ27XXX_O_CFGUP BIT(3) 995 #define BQ27XXX_O_RAM BIT(4) 996 #define BQ27Z561_O_BITS BIT(5) 997 #define BQ27XXX_O_SOC_SI BIT(6) /* SoC is single register */ 998 #define BQ27XXX_O_HAS_CI BIT(7) /* has Capacity Inaccurate flag */ 999 #define BQ27XXX_O_MUL_CHEM BIT(8) /* multiple chemistries supported */ 1000 1001 #define BQ27XXX_DATA(ref, key, opt) { \ 1002 .opts = (opt), \ 1003 .unseal_key = key, \ 1004 .regs = ref##_regs, \ 1005 .dm_regs = ref##_dm_regs, \ 1006 .props = ref##_props, \ 1007 .props_size = ARRAY_SIZE(ref##_props) } 1008 1009 static struct { 1010 u32 opts; 1011 u32 unseal_key; 1012 u8 *regs; 1013 struct bq27xxx_dm_reg *dm_regs; 1014 enum power_supply_property *props; 1015 size_t props_size; 1016 } bq27xxx_chip_data[] = { 1017 [BQ27000] = BQ27XXX_DATA(bq27000, 0 , BQ27XXX_O_ZERO | BQ27XXX_O_SOC_SI | BQ27XXX_O_HAS_CI), 1018 [BQ27010] = BQ27XXX_DATA(bq27010, 0 , BQ27XXX_O_ZERO | BQ27XXX_O_SOC_SI | BQ27XXX_O_HAS_CI), 1019 [BQ2750X] = BQ27XXX_DATA(bq2750x, 0 , BQ27XXX_O_OTDC), 1020 [BQ2751X] = BQ27XXX_DATA(bq2751x, 0 , BQ27XXX_O_OTDC), 1021 [BQ2752X] = BQ27XXX_DATA(bq2752x, 0 , BQ27XXX_O_OTDC), 1022 [BQ27500] = BQ27XXX_DATA(bq27500, 0x04143672, BQ27XXX_O_OTDC), 1023 [BQ27510G1] = BQ27XXX_DATA(bq27510g1, 0 , BQ27XXX_O_OTDC), 1024 [BQ27510G2] = BQ27XXX_DATA(bq27510g2, 0 , BQ27XXX_O_OTDC), 1025 [BQ27510G3] = BQ27XXX_DATA(bq27510g3, 0 , BQ27XXX_O_OTDC), 1026 [BQ27520G1] = BQ27XXX_DATA(bq27520g1, 0 , BQ27XXX_O_OTDC), 1027 [BQ27520G2] = BQ27XXX_DATA(bq27520g2, 0 , BQ27XXX_O_OTDC), 1028 [BQ27520G3] = BQ27XXX_DATA(bq27520g3, 0 , BQ27XXX_O_OTDC), 1029 [BQ27520G4] = BQ27XXX_DATA(bq27520g4, 0 , BQ27XXX_O_OTDC), 1030 [BQ27521] = BQ27XXX_DATA(bq27521, 0 , 0), 1031 [BQ27530] = BQ27XXX_DATA(bq27530, 0 , BQ27XXX_O_UTOT), 1032 [BQ27531] = BQ27XXX_DATA(bq27531, 0 , BQ27XXX_O_UTOT), 1033 [BQ27541] = BQ27XXX_DATA(bq27541, 0 , BQ27XXX_O_OTDC), 1034 [BQ27542] = BQ27XXX_DATA(bq27542, 0 , BQ27XXX_O_OTDC), 1035 [BQ27546] = BQ27XXX_DATA(bq27546, 0 , BQ27XXX_O_OTDC), 1036 [BQ27742] = BQ27XXX_DATA(bq27742, 0 , BQ27XXX_O_OTDC), 1037 [BQ27545] = BQ27XXX_DATA(bq27545, 0x04143672, BQ27XXX_O_OTDC), 1038 [BQ27411] = BQ27XXX_DATA(bq27411, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 1039 [BQ27421] = BQ27XXX_DATA(bq27421, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 1040 [BQ27425] = BQ27XXX_DATA(bq27425, 0x04143672, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP), 1041 [BQ27426] = BQ27XXX_DATA(bq27426, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 1042 [BQ27441] = BQ27XXX_DATA(bq27441, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 1043 [BQ27621] = BQ27XXX_DATA(bq27621, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 1044 [BQ27Z561] = BQ27XXX_DATA(bq27z561, 0 , BQ27Z561_O_BITS), 1045 [BQ28Z610] = BQ27XXX_DATA(bq28z610, 0 , BQ27Z561_O_BITS), 1046 [BQ34Z100] = BQ27XXX_DATA(bq34z100, 0 , BQ27XXX_O_OTDC | BQ27XXX_O_SOC_SI | \ 1047 BQ27XXX_O_HAS_CI | BQ27XXX_O_MUL_CHEM), 1048 [BQ78Z100] = BQ27XXX_DATA(bq78z100, 0 , BQ27Z561_O_BITS), 1049 }; 1050 1051 static DEFINE_MUTEX(bq27xxx_list_lock); 1052 static LIST_HEAD(bq27xxx_battery_devices); 1053 1054 #define BQ27XXX_MSLEEP(i) usleep_range((i)*1000, (i)*1000+500) 1055 1056 #define BQ27XXX_DM_SZ 32 1057 1058 /** 1059 * struct bq27xxx_dm_buf - chip data memory buffer 1060 * @class: data memory subclass_id 1061 * @block: data memory block number 1062 * @data: data from/for the block 1063 * @has_data: true if data has been filled by read 1064 * @dirty: true if data has changed since last read/write 1065 * 1066 * Encapsulates info required to manage chip data memory blocks. 1067 */ 1068 struct bq27xxx_dm_buf { 1069 u8 class; 1070 u8 block; 1071 u8 data[BQ27XXX_DM_SZ]; 1072 bool has_data, dirty; 1073 }; 1074 1075 #define BQ27XXX_DM_BUF(di, i) { \ 1076 .class = (di)->dm_regs[i].subclass_id, \ 1077 .block = (di)->dm_regs[i].offset / BQ27XXX_DM_SZ, \ 1078 } 1079 1080 static inline __be16 *bq27xxx_dm_reg_ptr(struct bq27xxx_dm_buf *buf, 1081 struct bq27xxx_dm_reg *reg) 1082 { 1083 if (buf->class == reg->subclass_id && 1084 buf->block == reg->offset / BQ27XXX_DM_SZ) 1085 return (__be16 *) (buf->data + reg->offset % BQ27XXX_DM_SZ); 1086 1087 return NULL; 1088 } 1089 1090 static const char * const bq27xxx_dm_reg_name[] = { 1091 [BQ27XXX_DM_DESIGN_CAPACITY] = "design-capacity", 1092 [BQ27XXX_DM_DESIGN_ENERGY] = "design-energy", 1093 [BQ27XXX_DM_TERMINATE_VOLTAGE] = "terminate-voltage", 1094 }; 1095 1096 1097 static bool bq27xxx_dt_to_nvm = true; 1098 module_param_named(dt_monitored_battery_updates_nvm, bq27xxx_dt_to_nvm, bool, 0444); 1099 MODULE_PARM_DESC(dt_monitored_battery_updates_nvm, 1100 "Devicetree monitored-battery config updates data memory on NVM/flash chips.\n" 1101 "Users must set this =0 when installing a different type of battery!\n" 1102 "Default is =1." 1103 #ifndef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM 1104 "\nSetting this affects future kernel updates, not the current configuration." 1105 #endif 1106 ); 1107 1108 static int poll_interval_param_set(const char *val, const struct kernel_param *kp) 1109 { 1110 struct bq27xxx_device_info *di; 1111 unsigned int prev_val = *(unsigned int *) kp->arg; 1112 int ret; 1113 1114 ret = param_set_uint(val, kp); 1115 if (ret < 0 || prev_val == *(unsigned int *) kp->arg) 1116 return ret; 1117 1118 mutex_lock(&bq27xxx_list_lock); 1119 list_for_each_entry(di, &bq27xxx_battery_devices, list) 1120 mod_delayed_work(system_wq, &di->work, 0); 1121 mutex_unlock(&bq27xxx_list_lock); 1122 1123 return ret; 1124 } 1125 1126 static const struct kernel_param_ops param_ops_poll_interval = { 1127 .get = param_get_uint, 1128 .set = poll_interval_param_set, 1129 }; 1130 1131 static unsigned int poll_interval = 360; 1132 module_param_cb(poll_interval, ¶m_ops_poll_interval, &poll_interval, 0644); 1133 MODULE_PARM_DESC(poll_interval, 1134 "battery poll interval in seconds - 0 disables polling"); 1135 1136 /* 1137 * Common code for BQ27xxx devices 1138 */ 1139 1140 static inline int bq27xxx_read(struct bq27xxx_device_info *di, int reg_index, 1141 bool single) 1142 { 1143 int ret; 1144 1145 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1146 return -EINVAL; 1147 1148 ret = di->bus.read(di, di->regs[reg_index], single); 1149 if (ret < 0) 1150 dev_dbg(di->dev, "failed to read register 0x%02x (index %d)\n", 1151 di->regs[reg_index], reg_index); 1152 1153 return ret; 1154 } 1155 1156 static inline int bq27xxx_write(struct bq27xxx_device_info *di, int reg_index, 1157 u16 value, bool single) 1158 { 1159 int ret; 1160 1161 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1162 return -EINVAL; 1163 1164 if (!di->bus.write) 1165 return -EPERM; 1166 1167 ret = di->bus.write(di, di->regs[reg_index], value, single); 1168 if (ret < 0) 1169 dev_dbg(di->dev, "failed to write register 0x%02x (index %d)\n", 1170 di->regs[reg_index], reg_index); 1171 1172 return ret; 1173 } 1174 1175 static inline int bq27xxx_read_block(struct bq27xxx_device_info *di, int reg_index, 1176 u8 *data, int len) 1177 { 1178 int ret; 1179 1180 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1181 return -EINVAL; 1182 1183 if (!di->bus.read_bulk) 1184 return -EPERM; 1185 1186 ret = di->bus.read_bulk(di, di->regs[reg_index], data, len); 1187 if (ret < 0) 1188 dev_dbg(di->dev, "failed to read_bulk register 0x%02x (index %d)\n", 1189 di->regs[reg_index], reg_index); 1190 1191 return ret; 1192 } 1193 1194 static inline int bq27xxx_write_block(struct bq27xxx_device_info *di, int reg_index, 1195 u8 *data, int len) 1196 { 1197 int ret; 1198 1199 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1200 return -EINVAL; 1201 1202 if (!di->bus.write_bulk) 1203 return -EPERM; 1204 1205 ret = di->bus.write_bulk(di, di->regs[reg_index], data, len); 1206 if (ret < 0) 1207 dev_dbg(di->dev, "failed to write_bulk register 0x%02x (index %d)\n", 1208 di->regs[reg_index], reg_index); 1209 1210 return ret; 1211 } 1212 1213 static int bq27xxx_battery_seal(struct bq27xxx_device_info *di) 1214 { 1215 int ret; 1216 1217 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, BQ27XXX_SEALED, false); 1218 if (ret < 0) { 1219 dev_err(di->dev, "bus error on seal: %d\n", ret); 1220 return ret; 1221 } 1222 1223 return 0; 1224 } 1225 1226 static int bq27xxx_battery_unseal(struct bq27xxx_device_info *di) 1227 { 1228 int ret; 1229 1230 if (di->unseal_key == 0) { 1231 dev_err(di->dev, "unseal failed due to missing key\n"); 1232 return -EINVAL; 1233 } 1234 1235 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, (u16)(di->unseal_key >> 16), false); 1236 if (ret < 0) 1237 goto out; 1238 1239 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, (u16)di->unseal_key, false); 1240 if (ret < 0) 1241 goto out; 1242 1243 return 0; 1244 1245 out: 1246 dev_err(di->dev, "bus error on unseal: %d\n", ret); 1247 return ret; 1248 } 1249 1250 static u8 bq27xxx_battery_checksum_dm_block(struct bq27xxx_dm_buf *buf) 1251 { 1252 u16 sum = 0; 1253 int i; 1254 1255 for (i = 0; i < BQ27XXX_DM_SZ; i++) 1256 sum += buf->data[i]; 1257 sum &= 0xff; 1258 1259 return 0xff - sum; 1260 } 1261 1262 static int bq27xxx_battery_read_dm_block(struct bq27xxx_device_info *di, 1263 struct bq27xxx_dm_buf *buf) 1264 { 1265 int ret; 1266 1267 buf->has_data = false; 1268 1269 ret = bq27xxx_write(di, BQ27XXX_DM_CLASS, buf->class, true); 1270 if (ret < 0) 1271 goto out; 1272 1273 ret = bq27xxx_write(di, BQ27XXX_DM_BLOCK, buf->block, true); 1274 if (ret < 0) 1275 goto out; 1276 1277 BQ27XXX_MSLEEP(1); 1278 1279 ret = bq27xxx_read_block(di, BQ27XXX_DM_DATA, buf->data, BQ27XXX_DM_SZ); 1280 if (ret < 0) 1281 goto out; 1282 1283 ret = bq27xxx_read(di, BQ27XXX_DM_CKSUM, true); 1284 if (ret < 0) 1285 goto out; 1286 1287 if ((u8)ret != bq27xxx_battery_checksum_dm_block(buf)) { 1288 ret = -EINVAL; 1289 goto out; 1290 } 1291 1292 buf->has_data = true; 1293 buf->dirty = false; 1294 1295 return 0; 1296 1297 out: 1298 dev_err(di->dev, "bus error reading chip memory: %d\n", ret); 1299 return ret; 1300 } 1301 1302 static void bq27xxx_battery_update_dm_block(struct bq27xxx_device_info *di, 1303 struct bq27xxx_dm_buf *buf, 1304 enum bq27xxx_dm_reg_id reg_id, 1305 unsigned int val) 1306 { 1307 struct bq27xxx_dm_reg *reg = &di->dm_regs[reg_id]; 1308 const char *str = bq27xxx_dm_reg_name[reg_id]; 1309 __be16 *prev = bq27xxx_dm_reg_ptr(buf, reg); 1310 1311 if (prev == NULL) { 1312 dev_warn(di->dev, "buffer does not match %s dm spec\n", str); 1313 return; 1314 } 1315 1316 if (reg->bytes != 2) { 1317 dev_warn(di->dev, "%s dm spec has unsupported byte size\n", str); 1318 return; 1319 } 1320 1321 if (!buf->has_data) 1322 return; 1323 1324 if (be16_to_cpup(prev) == val) { 1325 dev_info(di->dev, "%s has %u\n", str, val); 1326 return; 1327 } 1328 1329 #ifdef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM 1330 if (!(di->opts & BQ27XXX_O_RAM) && !bq27xxx_dt_to_nvm) { 1331 #else 1332 if (!(di->opts & BQ27XXX_O_RAM)) { 1333 #endif 1334 /* devicetree and NVM differ; defer to NVM */ 1335 dev_warn(di->dev, "%s has %u; update to %u disallowed " 1336 #ifdef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM 1337 "by dt_monitored_battery_updates_nvm=0" 1338 #else 1339 "for flash/NVM data memory" 1340 #endif 1341 "\n", str, be16_to_cpup(prev), val); 1342 return; 1343 } 1344 1345 dev_info(di->dev, "update %s to %u\n", str, val); 1346 1347 *prev = cpu_to_be16(val); 1348 buf->dirty = true; 1349 } 1350 1351 static int bq27xxx_battery_cfgupdate_priv(struct bq27xxx_device_info *di, bool active) 1352 { 1353 const int limit = 100; 1354 u16 cmd = active ? BQ27XXX_SET_CFGUPDATE : BQ27XXX_SOFT_RESET; 1355 int ret, try = limit; 1356 1357 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, cmd, false); 1358 if (ret < 0) 1359 return ret; 1360 1361 do { 1362 BQ27XXX_MSLEEP(25); 1363 ret = bq27xxx_read(di, BQ27XXX_REG_FLAGS, false); 1364 if (ret < 0) 1365 return ret; 1366 } while (!!(ret & BQ27XXX_FLAG_CFGUP) != active && --try); 1367 1368 if (!try && di->chip != BQ27425) { // 425 has a bug 1369 dev_err(di->dev, "timed out waiting for cfgupdate flag %d\n", active); 1370 return -EINVAL; 1371 } 1372 1373 if (limit - try > 3) 1374 dev_warn(di->dev, "cfgupdate %d, retries %d\n", active, limit - try); 1375 1376 return 0; 1377 } 1378 1379 static inline int bq27xxx_battery_set_cfgupdate(struct bq27xxx_device_info *di) 1380 { 1381 int ret = bq27xxx_battery_cfgupdate_priv(di, true); 1382 if (ret < 0 && ret != -EINVAL) 1383 dev_err(di->dev, "bus error on set_cfgupdate: %d\n", ret); 1384 1385 return ret; 1386 } 1387 1388 static inline int bq27xxx_battery_soft_reset(struct bq27xxx_device_info *di) 1389 { 1390 int ret = bq27xxx_battery_cfgupdate_priv(di, false); 1391 if (ret < 0 && ret != -EINVAL) 1392 dev_err(di->dev, "bus error on soft_reset: %d\n", ret); 1393 1394 return ret; 1395 } 1396 1397 static int bq27xxx_battery_write_dm_block(struct bq27xxx_device_info *di, 1398 struct bq27xxx_dm_buf *buf) 1399 { 1400 bool cfgup = di->opts & BQ27XXX_O_CFGUP; 1401 int ret; 1402 1403 if (!buf->dirty) 1404 return 0; 1405 1406 if (cfgup) { 1407 ret = bq27xxx_battery_set_cfgupdate(di); 1408 if (ret < 0) 1409 return ret; 1410 } 1411 1412 ret = bq27xxx_write(di, BQ27XXX_DM_CTRL, 0, true); 1413 if (ret < 0) 1414 goto out; 1415 1416 ret = bq27xxx_write(di, BQ27XXX_DM_CLASS, buf->class, true); 1417 if (ret < 0) 1418 goto out; 1419 1420 ret = bq27xxx_write(di, BQ27XXX_DM_BLOCK, buf->block, true); 1421 if (ret < 0) 1422 goto out; 1423 1424 BQ27XXX_MSLEEP(1); 1425 1426 ret = bq27xxx_write_block(di, BQ27XXX_DM_DATA, buf->data, BQ27XXX_DM_SZ); 1427 if (ret < 0) 1428 goto out; 1429 1430 ret = bq27xxx_write(di, BQ27XXX_DM_CKSUM, 1431 bq27xxx_battery_checksum_dm_block(buf), true); 1432 if (ret < 0) 1433 goto out; 1434 1435 /* DO NOT read BQ27XXX_DM_CKSUM here to verify it! That may cause NVM 1436 * corruption on the '425 chip (and perhaps others), which can damage 1437 * the chip. 1438 */ 1439 1440 if (cfgup) { 1441 BQ27XXX_MSLEEP(1); 1442 ret = bq27xxx_battery_soft_reset(di); 1443 if (ret < 0) 1444 return ret; 1445 } else { 1446 BQ27XXX_MSLEEP(100); /* flash DM updates in <100ms */ 1447 } 1448 1449 buf->dirty = false; 1450 1451 return 0; 1452 1453 out: 1454 if (cfgup) 1455 bq27xxx_battery_soft_reset(di); 1456 1457 dev_err(di->dev, "bus error writing chip memory: %d\n", ret); 1458 return ret; 1459 } 1460 1461 static void bq27xxx_battery_set_config(struct bq27xxx_device_info *di, 1462 struct power_supply_battery_info *info) 1463 { 1464 struct bq27xxx_dm_buf bd = BQ27XXX_DM_BUF(di, BQ27XXX_DM_DESIGN_CAPACITY); 1465 struct bq27xxx_dm_buf bt = BQ27XXX_DM_BUF(di, BQ27XXX_DM_TERMINATE_VOLTAGE); 1466 bool updated; 1467 1468 if (bq27xxx_battery_unseal(di) < 0) 1469 return; 1470 1471 if (info->charge_full_design_uah != -EINVAL && 1472 info->energy_full_design_uwh != -EINVAL) { 1473 bq27xxx_battery_read_dm_block(di, &bd); 1474 /* assume design energy & capacity are in same block */ 1475 bq27xxx_battery_update_dm_block(di, &bd, 1476 BQ27XXX_DM_DESIGN_CAPACITY, 1477 info->charge_full_design_uah / 1000); 1478 bq27xxx_battery_update_dm_block(di, &bd, 1479 BQ27XXX_DM_DESIGN_ENERGY, 1480 info->energy_full_design_uwh / 1000); 1481 } 1482 1483 if (info->voltage_min_design_uv != -EINVAL) { 1484 bool same = bd.class == bt.class && bd.block == bt.block; 1485 if (!same) 1486 bq27xxx_battery_read_dm_block(di, &bt); 1487 bq27xxx_battery_update_dm_block(di, same ? &bd : &bt, 1488 BQ27XXX_DM_TERMINATE_VOLTAGE, 1489 info->voltage_min_design_uv / 1000); 1490 } 1491 1492 updated = bd.dirty || bt.dirty; 1493 1494 bq27xxx_battery_write_dm_block(di, &bd); 1495 bq27xxx_battery_write_dm_block(di, &bt); 1496 1497 bq27xxx_battery_seal(di); 1498 1499 if (updated && !(di->opts & BQ27XXX_O_CFGUP)) { 1500 bq27xxx_write(di, BQ27XXX_REG_CTRL, BQ27XXX_RESET, false); 1501 BQ27XXX_MSLEEP(300); /* reset time is not documented */ 1502 } 1503 /* assume bq27xxx_battery_update() is called hereafter */ 1504 } 1505 1506 static void bq27xxx_battery_settings(struct bq27xxx_device_info *di) 1507 { 1508 struct power_supply_battery_info *info; 1509 unsigned int min, max; 1510 1511 if (power_supply_get_battery_info(di->bat, &info) < 0) 1512 return; 1513 1514 if (!di->dm_regs) { 1515 dev_warn(di->dev, "data memory update not supported for chip\n"); 1516 return; 1517 } 1518 1519 if (info->energy_full_design_uwh != info->charge_full_design_uah) { 1520 if (info->energy_full_design_uwh == -EINVAL) 1521 dev_warn(di->dev, "missing battery:energy-full-design-microwatt-hours\n"); 1522 else if (info->charge_full_design_uah == -EINVAL) 1523 dev_warn(di->dev, "missing battery:charge-full-design-microamp-hours\n"); 1524 } 1525 1526 /* assume min == 0 */ 1527 max = di->dm_regs[BQ27XXX_DM_DESIGN_ENERGY].max; 1528 if (info->energy_full_design_uwh > max * 1000) { 1529 dev_err(di->dev, "invalid battery:energy-full-design-microwatt-hours %d\n", 1530 info->energy_full_design_uwh); 1531 info->energy_full_design_uwh = -EINVAL; 1532 } 1533 1534 /* assume min == 0 */ 1535 max = di->dm_regs[BQ27XXX_DM_DESIGN_CAPACITY].max; 1536 if (info->charge_full_design_uah > max * 1000) { 1537 dev_err(di->dev, "invalid battery:charge-full-design-microamp-hours %d\n", 1538 info->charge_full_design_uah); 1539 info->charge_full_design_uah = -EINVAL; 1540 } 1541 1542 min = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].min; 1543 max = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].max; 1544 if ((info->voltage_min_design_uv < min * 1000 || 1545 info->voltage_min_design_uv > max * 1000) && 1546 info->voltage_min_design_uv != -EINVAL) { 1547 dev_err(di->dev, "invalid battery:voltage-min-design-microvolt %d\n", 1548 info->voltage_min_design_uv); 1549 info->voltage_min_design_uv = -EINVAL; 1550 } 1551 1552 if ((info->energy_full_design_uwh != -EINVAL && 1553 info->charge_full_design_uah != -EINVAL) || 1554 info->voltage_min_design_uv != -EINVAL) 1555 bq27xxx_battery_set_config(di, info); 1556 } 1557 1558 /* 1559 * Return the battery State-of-Charge 1560 * Or < 0 if something fails. 1561 */ 1562 static int bq27xxx_battery_read_soc(struct bq27xxx_device_info *di) 1563 { 1564 int soc; 1565 1566 if (di->opts & BQ27XXX_O_SOC_SI) 1567 soc = bq27xxx_read(di, BQ27XXX_REG_SOC, true); 1568 else 1569 soc = bq27xxx_read(di, BQ27XXX_REG_SOC, false); 1570 1571 if (soc < 0) 1572 dev_dbg(di->dev, "error reading State-of-Charge\n"); 1573 1574 return soc; 1575 } 1576 1577 /* 1578 * Return a battery charge value in µAh 1579 * Or < 0 if something fails. 1580 */ 1581 static int bq27xxx_battery_read_charge(struct bq27xxx_device_info *di, u8 reg) 1582 { 1583 int charge; 1584 1585 charge = bq27xxx_read(di, reg, false); 1586 if (charge < 0) { 1587 dev_dbg(di->dev, "error reading charge register %02x: %d\n", 1588 reg, charge); 1589 return charge; 1590 } 1591 1592 if (di->opts & BQ27XXX_O_ZERO) 1593 charge *= BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS; 1594 else 1595 charge *= 1000; 1596 1597 return charge; 1598 } 1599 1600 /* 1601 * Return the battery Nominal available capacity in µAh 1602 * Or < 0 if something fails. 1603 */ 1604 static inline int bq27xxx_battery_read_nac(struct bq27xxx_device_info *di) 1605 { 1606 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_NAC); 1607 } 1608 1609 /* 1610 * Return the battery Remaining Capacity in µAh 1611 * Or < 0 if something fails. 1612 */ 1613 static inline int bq27xxx_battery_read_rc(struct bq27xxx_device_info *di) 1614 { 1615 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_RC); 1616 } 1617 1618 /* 1619 * Return the battery Full Charge Capacity in µAh 1620 * Or < 0 if something fails. 1621 */ 1622 static inline int bq27xxx_battery_read_fcc(struct bq27xxx_device_info *di) 1623 { 1624 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_FCC); 1625 } 1626 1627 /* 1628 * Return the Design Capacity in µAh 1629 * Or < 0 if something fails. 1630 */ 1631 static int bq27xxx_battery_read_dcap(struct bq27xxx_device_info *di) 1632 { 1633 int dcap; 1634 1635 if (di->opts & BQ27XXX_O_ZERO) 1636 dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, true); 1637 else 1638 dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, false); 1639 1640 if (dcap < 0) { 1641 dev_dbg(di->dev, "error reading initial last measured discharge\n"); 1642 return dcap; 1643 } 1644 1645 if (di->opts & BQ27XXX_O_ZERO) 1646 dcap = (dcap << 8) * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS; 1647 else 1648 dcap *= 1000; 1649 1650 return dcap; 1651 } 1652 1653 /* 1654 * Return the battery Available energy in µWh 1655 * Or < 0 if something fails. 1656 */ 1657 static int bq27xxx_battery_read_energy(struct bq27xxx_device_info *di) 1658 { 1659 int ae; 1660 1661 ae = bq27xxx_read(di, BQ27XXX_REG_AE, false); 1662 if (ae < 0) { 1663 dev_dbg(di->dev, "error reading available energy\n"); 1664 return ae; 1665 } 1666 1667 if (di->opts & BQ27XXX_O_ZERO) 1668 ae *= BQ27XXX_POWER_CONSTANT / BQ27XXX_RS; 1669 else 1670 ae *= 1000; 1671 1672 return ae; 1673 } 1674 1675 /* 1676 * Return the battery temperature in tenths of degree Kelvin 1677 * Or < 0 if something fails. 1678 */ 1679 static int bq27xxx_battery_read_temperature(struct bq27xxx_device_info *di) 1680 { 1681 int temp; 1682 1683 temp = bq27xxx_read(di, BQ27XXX_REG_TEMP, false); 1684 if (temp < 0) { 1685 dev_err(di->dev, "error reading temperature\n"); 1686 return temp; 1687 } 1688 1689 if (di->opts & BQ27XXX_O_ZERO) 1690 temp = 5 * temp / 2; 1691 1692 return temp; 1693 } 1694 1695 /* 1696 * Return the battery Cycle count total 1697 * Or < 0 if something fails. 1698 */ 1699 static int bq27xxx_battery_read_cyct(struct bq27xxx_device_info *di) 1700 { 1701 int cyct; 1702 1703 cyct = bq27xxx_read(di, BQ27XXX_REG_CYCT, false); 1704 if (cyct < 0) 1705 dev_err(di->dev, "error reading cycle count total\n"); 1706 1707 return cyct; 1708 } 1709 1710 /* 1711 * Read a time register. 1712 * Return < 0 if something fails. 1713 */ 1714 static int bq27xxx_battery_read_time(struct bq27xxx_device_info *di, u8 reg) 1715 { 1716 int tval; 1717 1718 tval = bq27xxx_read(di, reg, false); 1719 if (tval < 0) { 1720 dev_dbg(di->dev, "error reading time register %02x: %d\n", 1721 reg, tval); 1722 return tval; 1723 } 1724 1725 if (tval == 65535) 1726 return -ENODATA; 1727 1728 return tval * 60; 1729 } 1730 1731 /* 1732 * Returns true if a battery over temperature condition is detected 1733 */ 1734 static bool bq27xxx_battery_overtemp(struct bq27xxx_device_info *di, u16 flags) 1735 { 1736 if (di->opts & BQ27XXX_O_OTDC) 1737 return flags & (BQ27XXX_FLAG_OTC | BQ27XXX_FLAG_OTD); 1738 if (di->opts & BQ27XXX_O_UTOT) 1739 return flags & BQ27XXX_FLAG_OT; 1740 1741 return false; 1742 } 1743 1744 /* 1745 * Returns true if a battery under temperature condition is detected 1746 */ 1747 static bool bq27xxx_battery_undertemp(struct bq27xxx_device_info *di, u16 flags) 1748 { 1749 if (di->opts & BQ27XXX_O_UTOT) 1750 return flags & BQ27XXX_FLAG_UT; 1751 1752 return false; 1753 } 1754 1755 /* 1756 * Returns true if a low state of charge condition is detected 1757 */ 1758 static bool bq27xxx_battery_dead(struct bq27xxx_device_info *di, u16 flags) 1759 { 1760 if (di->opts & BQ27XXX_O_ZERO) 1761 return flags & (BQ27000_FLAG_EDV1 | BQ27000_FLAG_EDVF); 1762 else if (di->opts & BQ27Z561_O_BITS) 1763 return flags & BQ27Z561_FLAG_FDC; 1764 else 1765 return flags & (BQ27XXX_FLAG_SOC1 | BQ27XXX_FLAG_SOCF); 1766 } 1767 1768 /* 1769 * Returns true if reported battery capacity is inaccurate 1770 */ 1771 static bool bq27xxx_battery_capacity_inaccurate(struct bq27xxx_device_info *di, 1772 u16 flags) 1773 { 1774 if (di->opts & BQ27XXX_O_HAS_CI) 1775 return (flags & BQ27000_FLAG_CI); 1776 else 1777 return false; 1778 } 1779 1780 static int bq27xxx_battery_read_health(struct bq27xxx_device_info *di) 1781 { 1782 /* Unlikely but important to return first */ 1783 if (unlikely(bq27xxx_battery_overtemp(di, di->cache.flags))) 1784 return POWER_SUPPLY_HEALTH_OVERHEAT; 1785 if (unlikely(bq27xxx_battery_undertemp(di, di->cache.flags))) 1786 return POWER_SUPPLY_HEALTH_COLD; 1787 if (unlikely(bq27xxx_battery_dead(di, di->cache.flags))) 1788 return POWER_SUPPLY_HEALTH_DEAD; 1789 if (unlikely(bq27xxx_battery_capacity_inaccurate(di, di->cache.flags))) 1790 return POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED; 1791 1792 return POWER_SUPPLY_HEALTH_GOOD; 1793 } 1794 1795 static bool bq27xxx_battery_is_full(struct bq27xxx_device_info *di, int flags) 1796 { 1797 if (di->opts & BQ27XXX_O_ZERO) 1798 return (flags & BQ27000_FLAG_FC); 1799 else if (di->opts & BQ27Z561_O_BITS) 1800 return (flags & BQ27Z561_FLAG_FC); 1801 else 1802 return (flags & BQ27XXX_FLAG_FC); 1803 } 1804 1805 /* 1806 * Return the battery average current in µA and the status 1807 * Note that current can be negative signed as well 1808 * Or 0 if something fails. 1809 */ 1810 static int bq27xxx_battery_current_and_status( 1811 struct bq27xxx_device_info *di, 1812 union power_supply_propval *val_curr, 1813 union power_supply_propval *val_status, 1814 struct bq27xxx_reg_cache *cache) 1815 { 1816 bool single_flags = (di->opts & BQ27XXX_O_ZERO); 1817 int curr; 1818 int flags; 1819 1820 curr = bq27xxx_read(di, BQ27XXX_REG_AI, false); 1821 if (curr < 0) { 1822 dev_err(di->dev, "error reading current\n"); 1823 return curr; 1824 } 1825 1826 if (cache) { 1827 flags = cache->flags; 1828 } else { 1829 flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, single_flags); 1830 if (flags < 0) { 1831 dev_err(di->dev, "error reading flags\n"); 1832 return flags; 1833 } 1834 } 1835 1836 if (di->opts & BQ27XXX_O_ZERO) { 1837 if (!(flags & BQ27000_FLAG_CHGS)) { 1838 dev_dbg(di->dev, "negative current!\n"); 1839 curr = -curr; 1840 } 1841 1842 curr = curr * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS; 1843 } else { 1844 /* Other gauges return signed value */ 1845 curr = (int)((s16)curr) * 1000; 1846 } 1847 1848 if (val_curr) 1849 val_curr->intval = curr; 1850 1851 if (val_status) { 1852 if (curr > 0) { 1853 val_status->intval = POWER_SUPPLY_STATUS_CHARGING; 1854 } else if (curr < 0) { 1855 val_status->intval = POWER_SUPPLY_STATUS_DISCHARGING; 1856 } else { 1857 if (bq27xxx_battery_is_full(di, flags)) 1858 val_status->intval = POWER_SUPPLY_STATUS_FULL; 1859 else 1860 val_status->intval = 1861 POWER_SUPPLY_STATUS_NOT_CHARGING; 1862 } 1863 } 1864 1865 return 0; 1866 } 1867 1868 static void bq27xxx_battery_update_unlocked(struct bq27xxx_device_info *di) 1869 { 1870 union power_supply_propval status = di->last_status; 1871 struct bq27xxx_reg_cache cache = {0, }; 1872 bool has_singe_flag = di->opts & BQ27XXX_O_ZERO; 1873 1874 cache.flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, has_singe_flag); 1875 if ((cache.flags & 0xff) == 0xff) 1876 cache.flags = -1; /* read error */ 1877 if (cache.flags >= 0) { 1878 cache.temperature = bq27xxx_battery_read_temperature(di); 1879 if (di->regs[BQ27XXX_REG_TTE] != INVALID_REG_ADDR) 1880 cache.time_to_empty = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTE); 1881 if (di->regs[BQ27XXX_REG_TTECP] != INVALID_REG_ADDR) 1882 cache.time_to_empty_avg = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTECP); 1883 if (di->regs[BQ27XXX_REG_TTF] != INVALID_REG_ADDR) 1884 cache.time_to_full = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTF); 1885 1886 cache.charge_full = bq27xxx_battery_read_fcc(di); 1887 cache.capacity = bq27xxx_battery_read_soc(di); 1888 if (di->regs[BQ27XXX_REG_AE] != INVALID_REG_ADDR) 1889 cache.energy = bq27xxx_battery_read_energy(di); 1890 di->cache.flags = cache.flags; 1891 cache.health = bq27xxx_battery_read_health(di); 1892 if (di->regs[BQ27XXX_REG_CYCT] != INVALID_REG_ADDR) 1893 cache.cycle_count = bq27xxx_battery_read_cyct(di); 1894 1895 /* 1896 * On gauges with signed current reporting the current must be 1897 * checked to detect charging <-> discharging status changes. 1898 */ 1899 if (!(di->opts & BQ27XXX_O_ZERO)) 1900 bq27xxx_battery_current_and_status(di, NULL, &status, &cache); 1901 1902 /* We only have to read charge design full once */ 1903 if (di->charge_design_full <= 0) 1904 di->charge_design_full = bq27xxx_battery_read_dcap(di); 1905 } 1906 1907 if ((di->cache.capacity != cache.capacity) || 1908 (di->cache.flags != cache.flags) || 1909 (di->last_status.intval != status.intval)) { 1910 di->last_status.intval = status.intval; 1911 power_supply_changed(di->bat); 1912 } 1913 1914 if (memcmp(&di->cache, &cache, sizeof(cache)) != 0) 1915 di->cache = cache; 1916 1917 di->last_update = jiffies; 1918 1919 if (!di->removed && poll_interval > 0) 1920 mod_delayed_work(system_wq, &di->work, poll_interval * HZ); 1921 } 1922 1923 void bq27xxx_battery_update(struct bq27xxx_device_info *di) 1924 { 1925 mutex_lock(&di->lock); 1926 bq27xxx_battery_update_unlocked(di); 1927 mutex_unlock(&di->lock); 1928 } 1929 EXPORT_SYMBOL_GPL(bq27xxx_battery_update); 1930 1931 static void bq27xxx_battery_poll(struct work_struct *work) 1932 { 1933 struct bq27xxx_device_info *di = 1934 container_of(work, struct bq27xxx_device_info, 1935 work.work); 1936 1937 bq27xxx_battery_update(di); 1938 } 1939 1940 /* 1941 * Get the average power in µW 1942 * Return < 0 if something fails. 1943 */ 1944 static int bq27xxx_battery_pwr_avg(struct bq27xxx_device_info *di, 1945 union power_supply_propval *val) 1946 { 1947 int power; 1948 1949 power = bq27xxx_read(di, BQ27XXX_REG_AP, false); 1950 if (power < 0) { 1951 dev_err(di->dev, 1952 "error reading average power register %02x: %d\n", 1953 BQ27XXX_REG_AP, power); 1954 return power; 1955 } 1956 1957 if (di->opts & BQ27XXX_O_ZERO) 1958 val->intval = (power * BQ27XXX_POWER_CONSTANT) / BQ27XXX_RS; 1959 else 1960 /* Other gauges return a signed value in units of 10mW */ 1961 val->intval = (int)((s16)power) * 10000; 1962 1963 return 0; 1964 } 1965 1966 static int bq27xxx_battery_capacity_level(struct bq27xxx_device_info *di, 1967 union power_supply_propval *val) 1968 { 1969 int level; 1970 1971 if (di->opts & BQ27XXX_O_ZERO) { 1972 if (di->cache.flags & BQ27000_FLAG_FC) 1973 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; 1974 else if (di->cache.flags & BQ27000_FLAG_EDVF) 1975 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 1976 else if (di->cache.flags & BQ27000_FLAG_EDV1) 1977 level = POWER_SUPPLY_CAPACITY_LEVEL_LOW; 1978 else 1979 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 1980 } else if (di->opts & BQ27Z561_O_BITS) { 1981 if (di->cache.flags & BQ27Z561_FLAG_FC) 1982 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; 1983 else if (di->cache.flags & BQ27Z561_FLAG_FDC) 1984 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 1985 else 1986 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 1987 } else { 1988 if (di->cache.flags & BQ27XXX_FLAG_FC) 1989 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; 1990 else if (di->cache.flags & BQ27XXX_FLAG_SOCF) 1991 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 1992 else if (di->cache.flags & BQ27XXX_FLAG_SOC1) 1993 level = POWER_SUPPLY_CAPACITY_LEVEL_LOW; 1994 else 1995 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 1996 } 1997 1998 val->intval = level; 1999 2000 return 0; 2001 } 2002 2003 /* 2004 * Return the battery Voltage in millivolts 2005 * Or < 0 if something fails. 2006 */ 2007 static int bq27xxx_battery_voltage(struct bq27xxx_device_info *di, 2008 union power_supply_propval *val) 2009 { 2010 int volt; 2011 2012 volt = bq27xxx_read(di, BQ27XXX_REG_VOLT, false); 2013 if (volt < 0) { 2014 dev_err(di->dev, "error reading voltage\n"); 2015 return volt; 2016 } 2017 2018 val->intval = volt * 1000; 2019 2020 return 0; 2021 } 2022 2023 static int bq27xxx_simple_value(int value, 2024 union power_supply_propval *val) 2025 { 2026 if (value < 0) 2027 return value; 2028 2029 val->intval = value; 2030 2031 return 0; 2032 } 2033 2034 static int bq27xxx_battery_get_property(struct power_supply *psy, 2035 enum power_supply_property psp, 2036 union power_supply_propval *val) 2037 { 2038 int ret = 0; 2039 struct bq27xxx_device_info *di = power_supply_get_drvdata(psy); 2040 2041 mutex_lock(&di->lock); 2042 if (time_is_before_jiffies(di->last_update + 5 * HZ)) 2043 bq27xxx_battery_update_unlocked(di); 2044 mutex_unlock(&di->lock); 2045 2046 if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0) 2047 return -ENODEV; 2048 2049 switch (psp) { 2050 case POWER_SUPPLY_PROP_STATUS: 2051 ret = bq27xxx_battery_current_and_status(di, NULL, val, NULL); 2052 break; 2053 case POWER_SUPPLY_PROP_VOLTAGE_NOW: 2054 ret = bq27xxx_battery_voltage(di, val); 2055 break; 2056 case POWER_SUPPLY_PROP_PRESENT: 2057 val->intval = di->cache.flags < 0 ? 0 : 1; 2058 break; 2059 case POWER_SUPPLY_PROP_CURRENT_NOW: 2060 ret = bq27xxx_battery_current_and_status(di, val, NULL, NULL); 2061 break; 2062 case POWER_SUPPLY_PROP_CAPACITY: 2063 ret = bq27xxx_simple_value(di->cache.capacity, val); 2064 break; 2065 case POWER_SUPPLY_PROP_CAPACITY_LEVEL: 2066 ret = bq27xxx_battery_capacity_level(di, val); 2067 break; 2068 case POWER_SUPPLY_PROP_TEMP: 2069 ret = bq27xxx_simple_value(di->cache.temperature, val); 2070 if (ret == 0) 2071 val->intval -= 2731; /* convert decidegree k to c */ 2072 break; 2073 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: 2074 ret = bq27xxx_simple_value(di->cache.time_to_empty, val); 2075 break; 2076 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG: 2077 ret = bq27xxx_simple_value(di->cache.time_to_empty_avg, val); 2078 break; 2079 case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: 2080 ret = bq27xxx_simple_value(di->cache.time_to_full, val); 2081 break; 2082 case POWER_SUPPLY_PROP_TECHNOLOGY: 2083 if (di->opts & BQ27XXX_O_MUL_CHEM) 2084 val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN; 2085 else 2086 val->intval = POWER_SUPPLY_TECHNOLOGY_LION; 2087 break; 2088 case POWER_SUPPLY_PROP_CHARGE_NOW: 2089 if (di->regs[BQ27XXX_REG_NAC] != INVALID_REG_ADDR) 2090 ret = bq27xxx_simple_value(bq27xxx_battery_read_nac(di), val); 2091 else 2092 ret = bq27xxx_simple_value(bq27xxx_battery_read_rc(di), val); 2093 break; 2094 case POWER_SUPPLY_PROP_CHARGE_FULL: 2095 ret = bq27xxx_simple_value(di->cache.charge_full, val); 2096 break; 2097 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: 2098 ret = bq27xxx_simple_value(di->charge_design_full, val); 2099 break; 2100 /* 2101 * TODO: Implement these to make registers set from 2102 * power_supply_battery_info visible in sysfs. 2103 */ 2104 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: 2105 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: 2106 return -EINVAL; 2107 case POWER_SUPPLY_PROP_CYCLE_COUNT: 2108 ret = bq27xxx_simple_value(di->cache.cycle_count, val); 2109 break; 2110 case POWER_SUPPLY_PROP_ENERGY_NOW: 2111 ret = bq27xxx_simple_value(di->cache.energy, val); 2112 break; 2113 case POWER_SUPPLY_PROP_POWER_AVG: 2114 ret = bq27xxx_battery_pwr_avg(di, val); 2115 break; 2116 case POWER_SUPPLY_PROP_HEALTH: 2117 ret = bq27xxx_simple_value(di->cache.health, val); 2118 break; 2119 case POWER_SUPPLY_PROP_MANUFACTURER: 2120 val->strval = BQ27XXX_MANUFACTURER; 2121 break; 2122 default: 2123 return -EINVAL; 2124 } 2125 2126 return ret; 2127 } 2128 2129 static void bq27xxx_external_power_changed(struct power_supply *psy) 2130 { 2131 struct bq27xxx_device_info *di = power_supply_get_drvdata(psy); 2132 2133 /* After charger plug in/out wait 0.5s for things to stabilize */ 2134 mod_delayed_work(system_wq, &di->work, HZ / 2); 2135 } 2136 2137 int bq27xxx_battery_setup(struct bq27xxx_device_info *di) 2138 { 2139 struct power_supply_desc *psy_desc; 2140 struct power_supply_config psy_cfg = { 2141 .of_node = di->dev->of_node, 2142 .drv_data = di, 2143 }; 2144 2145 INIT_DELAYED_WORK(&di->work, bq27xxx_battery_poll); 2146 mutex_init(&di->lock); 2147 2148 di->regs = bq27xxx_chip_data[di->chip].regs; 2149 di->unseal_key = bq27xxx_chip_data[di->chip].unseal_key; 2150 di->dm_regs = bq27xxx_chip_data[di->chip].dm_regs; 2151 di->opts = bq27xxx_chip_data[di->chip].opts; 2152 2153 psy_desc = devm_kzalloc(di->dev, sizeof(*psy_desc), GFP_KERNEL); 2154 if (!psy_desc) 2155 return -ENOMEM; 2156 2157 psy_desc->name = di->name; 2158 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 2159 psy_desc->properties = bq27xxx_chip_data[di->chip].props; 2160 psy_desc->num_properties = bq27xxx_chip_data[di->chip].props_size; 2161 psy_desc->get_property = bq27xxx_battery_get_property; 2162 psy_desc->external_power_changed = bq27xxx_external_power_changed; 2163 2164 di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg); 2165 if (IS_ERR(di->bat)) 2166 return dev_err_probe(di->dev, PTR_ERR(di->bat), 2167 "failed to register battery\n"); 2168 2169 bq27xxx_battery_settings(di); 2170 bq27xxx_battery_update(di); 2171 2172 mutex_lock(&bq27xxx_list_lock); 2173 list_add(&di->list, &bq27xxx_battery_devices); 2174 mutex_unlock(&bq27xxx_list_lock); 2175 2176 return 0; 2177 } 2178 EXPORT_SYMBOL_GPL(bq27xxx_battery_setup); 2179 2180 void bq27xxx_battery_teardown(struct bq27xxx_device_info *di) 2181 { 2182 mutex_lock(&bq27xxx_list_lock); 2183 list_del(&di->list); 2184 mutex_unlock(&bq27xxx_list_lock); 2185 2186 /* Set removed to avoid bq27xxx_battery_update() re-queuing the work */ 2187 mutex_lock(&di->lock); 2188 di->removed = true; 2189 mutex_unlock(&di->lock); 2190 2191 cancel_delayed_work_sync(&di->work); 2192 2193 power_supply_unregister(di->bat); 2194 mutex_destroy(&di->lock); 2195 } 2196 EXPORT_SYMBOL_GPL(bq27xxx_battery_teardown); 2197 2198 MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>"); 2199 MODULE_DESCRIPTION("BQ27xxx battery monitor driver"); 2200 MODULE_LICENSE("GPL"); 2201