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 #define bq27411_regs bq27421_regs 453 #define bq27425_regs bq27421_regs 454 #define bq27426_regs bq27421_regs 455 #define bq27441_regs bq27421_regs 456 #define bq27621_regs bq27421_regs 457 bq27z561_regs[BQ27XXX_REG_MAX] = { 458 [BQ27XXX_REG_CTRL] = 0x00, 459 [BQ27XXX_REG_TEMP] = 0x06, 460 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 461 [BQ27XXX_REG_VOLT] = 0x08, 462 [BQ27XXX_REG_AI] = 0x14, 463 [BQ27XXX_REG_FLAGS] = 0x0a, 464 [BQ27XXX_REG_TTE] = 0x16, 465 [BQ27XXX_REG_TTF] = 0x18, 466 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 467 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 468 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 469 [BQ27XXX_REG_RC] = 0x10, 470 [BQ27XXX_REG_FCC] = 0x12, 471 [BQ27XXX_REG_CYCT] = 0x2a, 472 [BQ27XXX_REG_AE] = 0x22, 473 [BQ27XXX_REG_SOC] = 0x2c, 474 [BQ27XXX_REG_DCAP] = 0x3c, 475 [BQ27XXX_REG_AP] = 0x22, 476 BQ27XXX_DM_REG_ROWS, 477 }, 478 bq28z610_regs[BQ27XXX_REG_MAX] = { 479 [BQ27XXX_REG_CTRL] = 0x00, 480 [BQ27XXX_REG_TEMP] = 0x06, 481 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, 482 [BQ27XXX_REG_VOLT] = 0x08, 483 [BQ27XXX_REG_AI] = 0x14, 484 [BQ27XXX_REG_FLAGS] = 0x0a, 485 [BQ27XXX_REG_TTE] = 0x16, 486 [BQ27XXX_REG_TTF] = 0x18, 487 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, 488 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 489 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 490 [BQ27XXX_REG_RC] = 0x10, 491 [BQ27XXX_REG_FCC] = 0x12, 492 [BQ27XXX_REG_CYCT] = 0x2a, 493 [BQ27XXX_REG_AE] = 0x22, 494 [BQ27XXX_REG_SOC] = 0x2c, 495 [BQ27XXX_REG_DCAP] = 0x3c, 496 [BQ27XXX_REG_AP] = 0x22, 497 BQ27XXX_DM_REG_ROWS, 498 }, 499 bq34z100_regs[BQ27XXX_REG_MAX] = { 500 [BQ27XXX_REG_CTRL] = 0x00, 501 [BQ27XXX_REG_TEMP] = 0x0c, 502 [BQ27XXX_REG_INT_TEMP] = 0x2a, 503 [BQ27XXX_REG_VOLT] = 0x08, 504 [BQ27XXX_REG_AI] = 0x0a, 505 [BQ27XXX_REG_FLAGS] = 0x0e, 506 [BQ27XXX_REG_TTE] = 0x18, 507 [BQ27XXX_REG_TTF] = 0x1a, 508 [BQ27XXX_REG_TTES] = 0x1e, 509 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 510 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 511 [BQ27XXX_REG_RC] = 0x04, 512 [BQ27XXX_REG_FCC] = 0x06, 513 [BQ27XXX_REG_CYCT] = 0x2c, 514 [BQ27XXX_REG_AE] = 0x24, 515 [BQ27XXX_REG_SOC] = 0x02, 516 [BQ27XXX_REG_DCAP] = 0x3c, 517 [BQ27XXX_REG_AP] = 0x22, 518 BQ27XXX_DM_REG_ROWS, 519 }, 520 bq78z100_regs[BQ27XXX_REG_MAX] = { 521 [BQ27XXX_REG_CTRL] = 0x00, 522 [BQ27XXX_REG_TEMP] = 0x06, 523 [BQ27XXX_REG_INT_TEMP] = 0x28, 524 [BQ27XXX_REG_VOLT] = 0x08, 525 [BQ27XXX_REG_AI] = 0x14, 526 [BQ27XXX_REG_FLAGS] = 0x0a, 527 [BQ27XXX_REG_TTE] = 0x16, 528 [BQ27XXX_REG_TTF] = 0x18, 529 [BQ27XXX_REG_TTES] = 0x1c, 530 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, 531 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, 532 [BQ27XXX_REG_RC] = 0x10, 533 [BQ27XXX_REG_FCC] = 0x12, 534 [BQ27XXX_REG_CYCT] = 0x2a, 535 [BQ27XXX_REG_AE] = INVALID_REG_ADDR, 536 [BQ27XXX_REG_SOC] = 0x2c, 537 [BQ27XXX_REG_DCAP] = 0x3c, 538 [BQ27XXX_REG_AP] = 0x22, 539 BQ27XXX_DM_REG_ROWS, 540 }; 541 542 static enum power_supply_property bq27000_props[] = { 543 POWER_SUPPLY_PROP_STATUS, 544 POWER_SUPPLY_PROP_PRESENT, 545 POWER_SUPPLY_PROP_VOLTAGE_NOW, 546 POWER_SUPPLY_PROP_CURRENT_NOW, 547 POWER_SUPPLY_PROP_CAPACITY, 548 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 549 POWER_SUPPLY_PROP_TEMP, 550 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 551 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 552 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 553 POWER_SUPPLY_PROP_TECHNOLOGY, 554 POWER_SUPPLY_PROP_CHARGE_FULL, 555 POWER_SUPPLY_PROP_CHARGE_NOW, 556 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 557 POWER_SUPPLY_PROP_CYCLE_COUNT, 558 POWER_SUPPLY_PROP_ENERGY_NOW, 559 POWER_SUPPLY_PROP_POWER_AVG, 560 POWER_SUPPLY_PROP_HEALTH, 561 POWER_SUPPLY_PROP_MANUFACTURER, 562 }; 563 564 static enum power_supply_property bq27010_props[] = { 565 POWER_SUPPLY_PROP_STATUS, 566 POWER_SUPPLY_PROP_PRESENT, 567 POWER_SUPPLY_PROP_VOLTAGE_NOW, 568 POWER_SUPPLY_PROP_CURRENT_NOW, 569 POWER_SUPPLY_PROP_CAPACITY, 570 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 571 POWER_SUPPLY_PROP_TEMP, 572 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 573 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 574 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 575 POWER_SUPPLY_PROP_TECHNOLOGY, 576 POWER_SUPPLY_PROP_CHARGE_FULL, 577 POWER_SUPPLY_PROP_CHARGE_NOW, 578 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 579 POWER_SUPPLY_PROP_CYCLE_COUNT, 580 POWER_SUPPLY_PROP_HEALTH, 581 POWER_SUPPLY_PROP_MANUFACTURER, 582 }; 583 584 #define bq2750x_props bq27510g3_props 585 #define bq2751x_props bq27510g3_props 586 #define bq2752x_props bq27510g3_props 587 588 static enum power_supply_property bq27500_props[] = { 589 POWER_SUPPLY_PROP_STATUS, 590 POWER_SUPPLY_PROP_PRESENT, 591 POWER_SUPPLY_PROP_VOLTAGE_NOW, 592 POWER_SUPPLY_PROP_CURRENT_NOW, 593 POWER_SUPPLY_PROP_CAPACITY, 594 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 595 POWER_SUPPLY_PROP_TEMP, 596 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 597 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 598 POWER_SUPPLY_PROP_TECHNOLOGY, 599 POWER_SUPPLY_PROP_CHARGE_FULL, 600 POWER_SUPPLY_PROP_CHARGE_NOW, 601 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 602 POWER_SUPPLY_PROP_CYCLE_COUNT, 603 POWER_SUPPLY_PROP_ENERGY_NOW, 604 POWER_SUPPLY_PROP_POWER_AVG, 605 POWER_SUPPLY_PROP_HEALTH, 606 POWER_SUPPLY_PROP_MANUFACTURER, 607 }; 608 #define bq27510g1_props bq27500_props 609 #define bq27510g2_props bq27500_props 610 611 static enum power_supply_property bq27510g3_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_HEALTH, 626 POWER_SUPPLY_PROP_MANUFACTURER, 627 }; 628 629 static enum power_supply_property bq27520g1_props[] = { 630 POWER_SUPPLY_PROP_STATUS, 631 POWER_SUPPLY_PROP_PRESENT, 632 POWER_SUPPLY_PROP_VOLTAGE_NOW, 633 POWER_SUPPLY_PROP_CURRENT_NOW, 634 POWER_SUPPLY_PROP_CAPACITY, 635 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 636 POWER_SUPPLY_PROP_TEMP, 637 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 638 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 639 POWER_SUPPLY_PROP_TECHNOLOGY, 640 POWER_SUPPLY_PROP_CHARGE_FULL, 641 POWER_SUPPLY_PROP_CHARGE_NOW, 642 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 643 POWER_SUPPLY_PROP_ENERGY_NOW, 644 POWER_SUPPLY_PROP_POWER_AVG, 645 POWER_SUPPLY_PROP_HEALTH, 646 POWER_SUPPLY_PROP_MANUFACTURER, 647 }; 648 649 #define bq27520g2_props bq27500_props 650 651 static enum power_supply_property bq27520g3_props[] = { 652 POWER_SUPPLY_PROP_STATUS, 653 POWER_SUPPLY_PROP_PRESENT, 654 POWER_SUPPLY_PROP_VOLTAGE_NOW, 655 POWER_SUPPLY_PROP_CURRENT_NOW, 656 POWER_SUPPLY_PROP_CAPACITY, 657 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 658 POWER_SUPPLY_PROP_TEMP, 659 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 660 POWER_SUPPLY_PROP_TECHNOLOGY, 661 POWER_SUPPLY_PROP_CHARGE_FULL, 662 POWER_SUPPLY_PROP_CHARGE_NOW, 663 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 664 POWER_SUPPLY_PROP_CYCLE_COUNT, 665 POWER_SUPPLY_PROP_ENERGY_NOW, 666 POWER_SUPPLY_PROP_POWER_AVG, 667 POWER_SUPPLY_PROP_HEALTH, 668 POWER_SUPPLY_PROP_MANUFACTURER, 669 }; 670 671 static enum power_supply_property bq27520g4_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_CYCLE_COUNT, 684 POWER_SUPPLY_PROP_HEALTH, 685 POWER_SUPPLY_PROP_MANUFACTURER, 686 }; 687 688 static enum power_supply_property bq27521_props[] = { 689 POWER_SUPPLY_PROP_STATUS, 690 POWER_SUPPLY_PROP_PRESENT, 691 POWER_SUPPLY_PROP_VOLTAGE_NOW, 692 POWER_SUPPLY_PROP_CURRENT_NOW, 693 POWER_SUPPLY_PROP_TEMP, 694 POWER_SUPPLY_PROP_TECHNOLOGY, 695 }; 696 697 static enum power_supply_property bq27530_props[] = { 698 POWER_SUPPLY_PROP_STATUS, 699 POWER_SUPPLY_PROP_PRESENT, 700 POWER_SUPPLY_PROP_VOLTAGE_NOW, 701 POWER_SUPPLY_PROP_CURRENT_NOW, 702 POWER_SUPPLY_PROP_CAPACITY, 703 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 704 POWER_SUPPLY_PROP_TEMP, 705 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 706 POWER_SUPPLY_PROP_TECHNOLOGY, 707 POWER_SUPPLY_PROP_CHARGE_FULL, 708 POWER_SUPPLY_PROP_CHARGE_NOW, 709 POWER_SUPPLY_PROP_POWER_AVG, 710 POWER_SUPPLY_PROP_HEALTH, 711 POWER_SUPPLY_PROP_CYCLE_COUNT, 712 POWER_SUPPLY_PROP_MANUFACTURER, 713 }; 714 #define bq27531_props bq27530_props 715 716 static enum power_supply_property bq27541_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_TIME_TO_EMPTY_NOW, 725 POWER_SUPPLY_PROP_TECHNOLOGY, 726 POWER_SUPPLY_PROP_CHARGE_FULL, 727 POWER_SUPPLY_PROP_CHARGE_NOW, 728 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 729 POWER_SUPPLY_PROP_CYCLE_COUNT, 730 POWER_SUPPLY_PROP_POWER_AVG, 731 POWER_SUPPLY_PROP_HEALTH, 732 POWER_SUPPLY_PROP_MANUFACTURER, 733 }; 734 #define bq27542_props bq27541_props 735 #define bq27546_props bq27541_props 736 #define bq27742_props bq27541_props 737 738 static enum power_supply_property bq27545_props[] = { 739 POWER_SUPPLY_PROP_STATUS, 740 POWER_SUPPLY_PROP_PRESENT, 741 POWER_SUPPLY_PROP_VOLTAGE_NOW, 742 POWER_SUPPLY_PROP_CURRENT_NOW, 743 POWER_SUPPLY_PROP_CAPACITY, 744 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 745 POWER_SUPPLY_PROP_TEMP, 746 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 747 POWER_SUPPLY_PROP_TECHNOLOGY, 748 POWER_SUPPLY_PROP_CHARGE_FULL, 749 POWER_SUPPLY_PROP_CHARGE_NOW, 750 POWER_SUPPLY_PROP_HEALTH, 751 POWER_SUPPLY_PROP_CYCLE_COUNT, 752 POWER_SUPPLY_PROP_POWER_AVG, 753 POWER_SUPPLY_PROP_MANUFACTURER, 754 }; 755 756 static enum power_supply_property bq27421_props[] = { 757 POWER_SUPPLY_PROP_STATUS, 758 POWER_SUPPLY_PROP_PRESENT, 759 POWER_SUPPLY_PROP_VOLTAGE_NOW, 760 POWER_SUPPLY_PROP_CURRENT_NOW, 761 POWER_SUPPLY_PROP_CAPACITY, 762 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 763 POWER_SUPPLY_PROP_TEMP, 764 POWER_SUPPLY_PROP_TECHNOLOGY, 765 POWER_SUPPLY_PROP_CHARGE_FULL, 766 POWER_SUPPLY_PROP_CHARGE_NOW, 767 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 768 POWER_SUPPLY_PROP_MANUFACTURER, 769 }; 770 #define bq27411_props bq27421_props 771 #define bq27425_props bq27421_props 772 #define bq27426_props bq27421_props 773 #define bq27441_props bq27421_props 774 #define bq27621_props bq27421_props 775 776 static enum power_supply_property bq27z561_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_TIME_TO_EMPTY_NOW, 785 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 786 POWER_SUPPLY_PROP_TECHNOLOGY, 787 POWER_SUPPLY_PROP_CHARGE_FULL, 788 POWER_SUPPLY_PROP_CHARGE_NOW, 789 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 790 POWER_SUPPLY_PROP_CYCLE_COUNT, 791 POWER_SUPPLY_PROP_POWER_AVG, 792 POWER_SUPPLY_PROP_HEALTH, 793 POWER_SUPPLY_PROP_MANUFACTURER, 794 }; 795 796 static enum power_supply_property bq28z610_props[] = { 797 POWER_SUPPLY_PROP_STATUS, 798 POWER_SUPPLY_PROP_PRESENT, 799 POWER_SUPPLY_PROP_VOLTAGE_NOW, 800 POWER_SUPPLY_PROP_CURRENT_NOW, 801 POWER_SUPPLY_PROP_CAPACITY, 802 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 803 POWER_SUPPLY_PROP_TEMP, 804 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 805 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 806 POWER_SUPPLY_PROP_TECHNOLOGY, 807 POWER_SUPPLY_PROP_CHARGE_FULL, 808 POWER_SUPPLY_PROP_CHARGE_NOW, 809 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 810 POWER_SUPPLY_PROP_CYCLE_COUNT, 811 POWER_SUPPLY_PROP_POWER_AVG, 812 POWER_SUPPLY_PROP_HEALTH, 813 POWER_SUPPLY_PROP_MANUFACTURER, 814 }; 815 816 static enum power_supply_property bq34z100_props[] = { 817 POWER_SUPPLY_PROP_STATUS, 818 POWER_SUPPLY_PROP_PRESENT, 819 POWER_SUPPLY_PROP_VOLTAGE_NOW, 820 POWER_SUPPLY_PROP_CURRENT_NOW, 821 POWER_SUPPLY_PROP_CAPACITY, 822 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 823 POWER_SUPPLY_PROP_TEMP, 824 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 825 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 826 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 827 POWER_SUPPLY_PROP_TECHNOLOGY, 828 POWER_SUPPLY_PROP_CHARGE_FULL, 829 POWER_SUPPLY_PROP_CHARGE_NOW, 830 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 831 POWER_SUPPLY_PROP_CYCLE_COUNT, 832 POWER_SUPPLY_PROP_ENERGY_NOW, 833 POWER_SUPPLY_PROP_POWER_AVG, 834 POWER_SUPPLY_PROP_HEALTH, 835 POWER_SUPPLY_PROP_MANUFACTURER, 836 }; 837 838 static enum power_supply_property bq78z100_props[] = { 839 POWER_SUPPLY_PROP_STATUS, 840 POWER_SUPPLY_PROP_PRESENT, 841 POWER_SUPPLY_PROP_VOLTAGE_NOW, 842 POWER_SUPPLY_PROP_CURRENT_NOW, 843 POWER_SUPPLY_PROP_CAPACITY, 844 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 845 POWER_SUPPLY_PROP_TEMP, 846 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 847 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 848 POWER_SUPPLY_PROP_TECHNOLOGY, 849 POWER_SUPPLY_PROP_CHARGE_FULL, 850 POWER_SUPPLY_PROP_CHARGE_NOW, 851 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 852 POWER_SUPPLY_PROP_CYCLE_COUNT, 853 POWER_SUPPLY_PROP_POWER_AVG, 854 POWER_SUPPLY_PROP_HEALTH, 855 POWER_SUPPLY_PROP_MANUFACTURER, 856 }; 857 858 struct bq27xxx_dm_reg { 859 u8 subclass_id; 860 u8 offset; 861 u8 bytes; 862 u16 min, max; 863 }; 864 865 enum bq27xxx_dm_reg_id { 866 BQ27XXX_DM_DESIGN_CAPACITY = 0, 867 BQ27XXX_DM_DESIGN_ENERGY, 868 BQ27XXX_DM_TERMINATE_VOLTAGE, 869 }; 870 871 #define bq27000_dm_regs NULL 872 #define bq27010_dm_regs NULL 873 #define bq2750x_dm_regs NULL 874 #define bq2751x_dm_regs NULL 875 #define bq2752x_dm_regs NULL 876 877 #if 0 /* not yet tested */ 878 static struct bq27xxx_dm_reg bq27500_dm_regs[] = { 879 [BQ27XXX_DM_DESIGN_CAPACITY] = { 48, 10, 2, 0, 65535 }, 880 [BQ27XXX_DM_DESIGN_ENERGY] = { }, /* missing on chip */ 881 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 48, 2, 1000, 32767 }, 882 }; 883 #else 884 #define bq27500_dm_regs NULL 885 #endif 886 887 /* todo create data memory definitions from datasheets and test on chips */ 888 #define bq27510g1_dm_regs NULL 889 #define bq27510g2_dm_regs NULL 890 #define bq27510g3_dm_regs NULL 891 #define bq27520g1_dm_regs NULL 892 #define bq27520g2_dm_regs NULL 893 #define bq27520g3_dm_regs NULL 894 #define bq27520g4_dm_regs NULL 895 #define bq27521_dm_regs NULL 896 #define bq27530_dm_regs NULL 897 #define bq27531_dm_regs NULL 898 #define bq27541_dm_regs NULL 899 #define bq27542_dm_regs NULL 900 #define bq27546_dm_regs NULL 901 #define bq27742_dm_regs NULL 902 903 #if 0 /* not yet tested */ 904 static struct bq27xxx_dm_reg bq27545_dm_regs[] = { 905 [BQ27XXX_DM_DESIGN_CAPACITY] = { 48, 23, 2, 0, 32767 }, 906 [BQ27XXX_DM_DESIGN_ENERGY] = { 48, 25, 2, 0, 32767 }, 907 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 67, 2, 2800, 3700 }, 908 }; 909 #else 910 #define bq27545_dm_regs NULL 911 #endif 912 913 static struct bq27xxx_dm_reg bq27411_dm_regs[] = { 914 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 10, 2, 0, 32767 }, 915 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 12, 2, 0, 32767 }, 916 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2800, 3700 }, 917 }; 918 919 static struct bq27xxx_dm_reg bq27421_dm_regs[] = { 920 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 10, 2, 0, 8000 }, 921 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 12, 2, 0, 32767 }, 922 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2500, 3700 }, 923 }; 924 925 static struct bq27xxx_dm_reg bq27425_dm_regs[] = { 926 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 12, 2, 0, 32767 }, 927 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 14, 2, 0, 32767 }, 928 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 18, 2, 2800, 3700 }, 929 }; 930 931 static struct bq27xxx_dm_reg bq27426_dm_regs[] = { 932 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 6, 2, 0, 8000 }, 933 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 8, 2, 0, 32767 }, 934 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 10, 2, 2500, 3700 }, 935 }; 936 937 #if 0 /* not yet tested */ 938 #define bq27441_dm_regs bq27421_dm_regs 939 #else 940 #define bq27441_dm_regs NULL 941 #endif 942 943 #if 0 /* not yet tested */ 944 static struct bq27xxx_dm_reg bq27621_dm_regs[] = { 945 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 3, 2, 0, 8000 }, 946 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 5, 2, 0, 32767 }, 947 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 9, 2, 2500, 3700 }, 948 }; 949 #else 950 #define bq27621_dm_regs NULL 951 #endif 952 953 #define bq27z561_dm_regs NULL 954 #define bq28z610_dm_regs NULL 955 #define bq34z100_dm_regs NULL 956 #define bq78z100_dm_regs NULL 957 958 #define BQ27XXX_O_ZERO BIT(0) 959 #define BQ27XXX_O_OTDC BIT(1) /* has OTC/OTD overtemperature flags */ 960 #define BQ27XXX_O_UTOT BIT(2) /* has OT overtemperature flag */ 961 #define BQ27XXX_O_CFGUP BIT(3) 962 #define BQ27XXX_O_RAM BIT(4) 963 #define BQ27Z561_O_BITS BIT(5) 964 #define BQ27XXX_O_SOC_SI BIT(6) /* SoC is single register */ 965 #define BQ27XXX_O_HAS_CI BIT(7) /* has Capacity Inaccurate flag */ 966 #define BQ27XXX_O_MUL_CHEM BIT(8) /* multiple chemistries supported */ 967 968 #define BQ27XXX_DATA(ref, key, opt) { \ 969 .opts = (opt), \ 970 .unseal_key = key, \ 971 .regs = ref##_regs, \ 972 .dm_regs = ref##_dm_regs, \ 973 .props = ref##_props, \ 974 .props_size = ARRAY_SIZE(ref##_props) } 975 976 static struct { 977 u32 opts; 978 u32 unseal_key; 979 u8 *regs; 980 struct bq27xxx_dm_reg *dm_regs; 981 enum power_supply_property *props; 982 size_t props_size; 983 } bq27xxx_chip_data[] = { 984 [BQ27000] = BQ27XXX_DATA(bq27000, 0 , BQ27XXX_O_ZERO | BQ27XXX_O_SOC_SI | BQ27XXX_O_HAS_CI), 985 [BQ27010] = BQ27XXX_DATA(bq27010, 0 , BQ27XXX_O_ZERO | BQ27XXX_O_SOC_SI | BQ27XXX_O_HAS_CI), 986 [BQ2750X] = BQ27XXX_DATA(bq2750x, 0 , BQ27XXX_O_OTDC), 987 [BQ2751X] = BQ27XXX_DATA(bq2751x, 0 , BQ27XXX_O_OTDC), 988 [BQ2752X] = BQ27XXX_DATA(bq2752x, 0 , BQ27XXX_O_OTDC), 989 [BQ27500] = BQ27XXX_DATA(bq27500, 0x04143672, BQ27XXX_O_OTDC), 990 [BQ27510G1] = BQ27XXX_DATA(bq27510g1, 0 , BQ27XXX_O_OTDC), 991 [BQ27510G2] = BQ27XXX_DATA(bq27510g2, 0 , BQ27XXX_O_OTDC), 992 [BQ27510G3] = BQ27XXX_DATA(bq27510g3, 0 , BQ27XXX_O_OTDC), 993 [BQ27520G1] = BQ27XXX_DATA(bq27520g1, 0 , BQ27XXX_O_OTDC), 994 [BQ27520G2] = BQ27XXX_DATA(bq27520g2, 0 , BQ27XXX_O_OTDC), 995 [BQ27520G3] = BQ27XXX_DATA(bq27520g3, 0 , BQ27XXX_O_OTDC), 996 [BQ27520G4] = BQ27XXX_DATA(bq27520g4, 0 , BQ27XXX_O_OTDC), 997 [BQ27521] = BQ27XXX_DATA(bq27521, 0 , 0), 998 [BQ27530] = BQ27XXX_DATA(bq27530, 0 , BQ27XXX_O_UTOT), 999 [BQ27531] = BQ27XXX_DATA(bq27531, 0 , BQ27XXX_O_UTOT), 1000 [BQ27541] = BQ27XXX_DATA(bq27541, 0 , BQ27XXX_O_OTDC), 1001 [BQ27542] = BQ27XXX_DATA(bq27542, 0 , BQ27XXX_O_OTDC), 1002 [BQ27546] = BQ27XXX_DATA(bq27546, 0 , BQ27XXX_O_OTDC), 1003 [BQ27742] = BQ27XXX_DATA(bq27742, 0 , BQ27XXX_O_OTDC), 1004 [BQ27545] = BQ27XXX_DATA(bq27545, 0x04143672, BQ27XXX_O_OTDC), 1005 [BQ27411] = BQ27XXX_DATA(bq27411, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 1006 [BQ27421] = BQ27XXX_DATA(bq27421, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 1007 [BQ27425] = BQ27XXX_DATA(bq27425, 0x04143672, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP), 1008 [BQ27426] = BQ27XXX_DATA(bq27426, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 1009 [BQ27441] = BQ27XXX_DATA(bq27441, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 1010 [BQ27621] = BQ27XXX_DATA(bq27621, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM), 1011 [BQ27Z561] = BQ27XXX_DATA(bq27z561, 0 , BQ27Z561_O_BITS), 1012 [BQ28Z610] = BQ27XXX_DATA(bq28z610, 0 , BQ27Z561_O_BITS), 1013 [BQ34Z100] = BQ27XXX_DATA(bq34z100, 0 , BQ27XXX_O_OTDC | BQ27XXX_O_SOC_SI | \ 1014 BQ27XXX_O_HAS_CI | BQ27XXX_O_MUL_CHEM), 1015 [BQ78Z100] = BQ27XXX_DATA(bq78z100, 0 , BQ27Z561_O_BITS), 1016 }; 1017 1018 static DEFINE_MUTEX(bq27xxx_list_lock); 1019 static LIST_HEAD(bq27xxx_battery_devices); 1020 1021 #define BQ27XXX_MSLEEP(i) usleep_range((i)*1000, (i)*1000+500) 1022 1023 #define BQ27XXX_DM_SZ 32 1024 1025 /** 1026 * struct bq27xxx_dm_buf - chip data memory buffer 1027 * @class: data memory subclass_id 1028 * @block: data memory block number 1029 * @data: data from/for the block 1030 * @has_data: true if data has been filled by read 1031 * @dirty: true if data has changed since last read/write 1032 * 1033 * Encapsulates info required to manage chip data memory blocks. 1034 */ 1035 struct bq27xxx_dm_buf { 1036 u8 class; 1037 u8 block; 1038 u8 data[BQ27XXX_DM_SZ]; 1039 bool has_data, dirty; 1040 }; 1041 1042 #define BQ27XXX_DM_BUF(di, i) { \ 1043 .class = (di)->dm_regs[i].subclass_id, \ 1044 .block = (di)->dm_regs[i].offset / BQ27XXX_DM_SZ, \ 1045 } 1046 1047 static inline __be16 *bq27xxx_dm_reg_ptr(struct bq27xxx_dm_buf *buf, 1048 struct bq27xxx_dm_reg *reg) 1049 { 1050 if (buf->class == reg->subclass_id && 1051 buf->block == reg->offset / BQ27XXX_DM_SZ) 1052 return (__be16 *) (buf->data + reg->offset % BQ27XXX_DM_SZ); 1053 1054 return NULL; 1055 } 1056 1057 static const char * const bq27xxx_dm_reg_name[] = { 1058 [BQ27XXX_DM_DESIGN_CAPACITY] = "design-capacity", 1059 [BQ27XXX_DM_DESIGN_ENERGY] = "design-energy", 1060 [BQ27XXX_DM_TERMINATE_VOLTAGE] = "terminate-voltage", 1061 }; 1062 1063 1064 static bool bq27xxx_dt_to_nvm = true; 1065 module_param_named(dt_monitored_battery_updates_nvm, bq27xxx_dt_to_nvm, bool, 0444); 1066 MODULE_PARM_DESC(dt_monitored_battery_updates_nvm, 1067 "Devicetree monitored-battery config updates data memory on NVM/flash chips.\n" 1068 "Users must set this =0 when installing a different type of battery!\n" 1069 "Default is =1." 1070 #ifndef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM 1071 "\nSetting this affects future kernel updates, not the current configuration." 1072 #endif 1073 ); 1074 1075 static int poll_interval_param_set(const char *val, const struct kernel_param *kp) 1076 { 1077 struct bq27xxx_device_info *di; 1078 unsigned int prev_val = *(unsigned int *) kp->arg; 1079 int ret; 1080 1081 ret = param_set_uint(val, kp); 1082 if (ret < 0 || prev_val == *(unsigned int *) kp->arg) 1083 return ret; 1084 1085 mutex_lock(&bq27xxx_list_lock); 1086 list_for_each_entry(di, &bq27xxx_battery_devices, list) { 1087 cancel_delayed_work_sync(&di->work); 1088 schedule_delayed_work(&di->work, 0); 1089 } 1090 mutex_unlock(&bq27xxx_list_lock); 1091 1092 return ret; 1093 } 1094 1095 static const struct kernel_param_ops param_ops_poll_interval = { 1096 .get = param_get_uint, 1097 .set = poll_interval_param_set, 1098 }; 1099 1100 static unsigned int poll_interval = 360; 1101 module_param_cb(poll_interval, ¶m_ops_poll_interval, &poll_interval, 0644); 1102 MODULE_PARM_DESC(poll_interval, 1103 "battery poll interval in seconds - 0 disables polling"); 1104 1105 /* 1106 * Common code for BQ27xxx devices 1107 */ 1108 1109 static inline int bq27xxx_read(struct bq27xxx_device_info *di, int reg_index, 1110 bool single) 1111 { 1112 int ret; 1113 1114 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1115 return -EINVAL; 1116 1117 ret = di->bus.read(di, di->regs[reg_index], single); 1118 if (ret < 0) 1119 dev_dbg(di->dev, "failed to read register 0x%02x (index %d)\n", 1120 di->regs[reg_index], reg_index); 1121 1122 return ret; 1123 } 1124 1125 static inline int bq27xxx_write(struct bq27xxx_device_info *di, int reg_index, 1126 u16 value, bool single) 1127 { 1128 int ret; 1129 1130 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1131 return -EINVAL; 1132 1133 if (!di->bus.write) 1134 return -EPERM; 1135 1136 ret = di->bus.write(di, di->regs[reg_index], value, single); 1137 if (ret < 0) 1138 dev_dbg(di->dev, "failed to write register 0x%02x (index %d)\n", 1139 di->regs[reg_index], reg_index); 1140 1141 return ret; 1142 } 1143 1144 static inline int bq27xxx_read_block(struct bq27xxx_device_info *di, int reg_index, 1145 u8 *data, int len) 1146 { 1147 int ret; 1148 1149 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1150 return -EINVAL; 1151 1152 if (!di->bus.read_bulk) 1153 return -EPERM; 1154 1155 ret = di->bus.read_bulk(di, di->regs[reg_index], data, len); 1156 if (ret < 0) 1157 dev_dbg(di->dev, "failed to read_bulk register 0x%02x (index %d)\n", 1158 di->regs[reg_index], reg_index); 1159 1160 return ret; 1161 } 1162 1163 static inline int bq27xxx_write_block(struct bq27xxx_device_info *di, int reg_index, 1164 u8 *data, int len) 1165 { 1166 int ret; 1167 1168 if (!di || di->regs[reg_index] == INVALID_REG_ADDR) 1169 return -EINVAL; 1170 1171 if (!di->bus.write_bulk) 1172 return -EPERM; 1173 1174 ret = di->bus.write_bulk(di, di->regs[reg_index], data, len); 1175 if (ret < 0) 1176 dev_dbg(di->dev, "failed to write_bulk register 0x%02x (index %d)\n", 1177 di->regs[reg_index], reg_index); 1178 1179 return ret; 1180 } 1181 1182 static int bq27xxx_battery_seal(struct bq27xxx_device_info *di) 1183 { 1184 int ret; 1185 1186 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, BQ27XXX_SEALED, false); 1187 if (ret < 0) { 1188 dev_err(di->dev, "bus error on seal: %d\n", ret); 1189 return ret; 1190 } 1191 1192 return 0; 1193 } 1194 1195 static int bq27xxx_battery_unseal(struct bq27xxx_device_info *di) 1196 { 1197 int ret; 1198 1199 if (di->unseal_key == 0) { 1200 dev_err(di->dev, "unseal failed due to missing key\n"); 1201 return -EINVAL; 1202 } 1203 1204 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, (u16)(di->unseal_key >> 16), false); 1205 if (ret < 0) 1206 goto out; 1207 1208 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, (u16)di->unseal_key, false); 1209 if (ret < 0) 1210 goto out; 1211 1212 return 0; 1213 1214 out: 1215 dev_err(di->dev, "bus error on unseal: %d\n", ret); 1216 return ret; 1217 } 1218 1219 static u8 bq27xxx_battery_checksum_dm_block(struct bq27xxx_dm_buf *buf) 1220 { 1221 u16 sum = 0; 1222 int i; 1223 1224 for (i = 0; i < BQ27XXX_DM_SZ; i++) 1225 sum += buf->data[i]; 1226 sum &= 0xff; 1227 1228 return 0xff - sum; 1229 } 1230 1231 static int bq27xxx_battery_read_dm_block(struct bq27xxx_device_info *di, 1232 struct bq27xxx_dm_buf *buf) 1233 { 1234 int ret; 1235 1236 buf->has_data = false; 1237 1238 ret = bq27xxx_write(di, BQ27XXX_DM_CLASS, buf->class, true); 1239 if (ret < 0) 1240 goto out; 1241 1242 ret = bq27xxx_write(di, BQ27XXX_DM_BLOCK, buf->block, true); 1243 if (ret < 0) 1244 goto out; 1245 1246 BQ27XXX_MSLEEP(1); 1247 1248 ret = bq27xxx_read_block(di, BQ27XXX_DM_DATA, buf->data, BQ27XXX_DM_SZ); 1249 if (ret < 0) 1250 goto out; 1251 1252 ret = bq27xxx_read(di, BQ27XXX_DM_CKSUM, true); 1253 if (ret < 0) 1254 goto out; 1255 1256 if ((u8)ret != bq27xxx_battery_checksum_dm_block(buf)) { 1257 ret = -EINVAL; 1258 goto out; 1259 } 1260 1261 buf->has_data = true; 1262 buf->dirty = false; 1263 1264 return 0; 1265 1266 out: 1267 dev_err(di->dev, "bus error reading chip memory: %d\n", ret); 1268 return ret; 1269 } 1270 1271 static void bq27xxx_battery_update_dm_block(struct bq27xxx_device_info *di, 1272 struct bq27xxx_dm_buf *buf, 1273 enum bq27xxx_dm_reg_id reg_id, 1274 unsigned int val) 1275 { 1276 struct bq27xxx_dm_reg *reg = &di->dm_regs[reg_id]; 1277 const char *str = bq27xxx_dm_reg_name[reg_id]; 1278 __be16 *prev = bq27xxx_dm_reg_ptr(buf, reg); 1279 1280 if (prev == NULL) { 1281 dev_warn(di->dev, "buffer does not match %s dm spec\n", str); 1282 return; 1283 } 1284 1285 if (reg->bytes != 2) { 1286 dev_warn(di->dev, "%s dm spec has unsupported byte size\n", str); 1287 return; 1288 } 1289 1290 if (!buf->has_data) 1291 return; 1292 1293 if (be16_to_cpup(prev) == val) { 1294 dev_info(di->dev, "%s has %u\n", str, val); 1295 return; 1296 } 1297 1298 #ifdef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM 1299 if (!(di->opts & BQ27XXX_O_RAM) && !bq27xxx_dt_to_nvm) { 1300 #else 1301 if (!(di->opts & BQ27XXX_O_RAM)) { 1302 #endif 1303 /* devicetree and NVM differ; defer to NVM */ 1304 dev_warn(di->dev, "%s has %u; update to %u disallowed " 1305 #ifdef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM 1306 "by dt_monitored_battery_updates_nvm=0" 1307 #else 1308 "for flash/NVM data memory" 1309 #endif 1310 "\n", str, be16_to_cpup(prev), val); 1311 return; 1312 } 1313 1314 dev_info(di->dev, "update %s to %u\n", str, val); 1315 1316 *prev = cpu_to_be16(val); 1317 buf->dirty = true; 1318 } 1319 1320 static int bq27xxx_battery_cfgupdate_priv(struct bq27xxx_device_info *di, bool active) 1321 { 1322 const int limit = 100; 1323 u16 cmd = active ? BQ27XXX_SET_CFGUPDATE : BQ27XXX_SOFT_RESET; 1324 int ret, try = limit; 1325 1326 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, cmd, false); 1327 if (ret < 0) 1328 return ret; 1329 1330 do { 1331 BQ27XXX_MSLEEP(25); 1332 ret = bq27xxx_read(di, BQ27XXX_REG_FLAGS, false); 1333 if (ret < 0) 1334 return ret; 1335 } while (!!(ret & BQ27XXX_FLAG_CFGUP) != active && --try); 1336 1337 if (!try && di->chip != BQ27425) { // 425 has a bug 1338 dev_err(di->dev, "timed out waiting for cfgupdate flag %d\n", active); 1339 return -EINVAL; 1340 } 1341 1342 if (limit - try > 3) 1343 dev_warn(di->dev, "cfgupdate %d, retries %d\n", active, limit - try); 1344 1345 return 0; 1346 } 1347 1348 static inline int bq27xxx_battery_set_cfgupdate(struct bq27xxx_device_info *di) 1349 { 1350 int ret = bq27xxx_battery_cfgupdate_priv(di, true); 1351 if (ret < 0 && ret != -EINVAL) 1352 dev_err(di->dev, "bus error on set_cfgupdate: %d\n", ret); 1353 1354 return ret; 1355 } 1356 1357 static inline int bq27xxx_battery_soft_reset(struct bq27xxx_device_info *di) 1358 { 1359 int ret = bq27xxx_battery_cfgupdate_priv(di, false); 1360 if (ret < 0 && ret != -EINVAL) 1361 dev_err(di->dev, "bus error on soft_reset: %d\n", ret); 1362 1363 return ret; 1364 } 1365 1366 static int bq27xxx_battery_write_dm_block(struct bq27xxx_device_info *di, 1367 struct bq27xxx_dm_buf *buf) 1368 { 1369 bool cfgup = di->opts & BQ27XXX_O_CFGUP; 1370 int ret; 1371 1372 if (!buf->dirty) 1373 return 0; 1374 1375 if (cfgup) { 1376 ret = bq27xxx_battery_set_cfgupdate(di); 1377 if (ret < 0) 1378 return ret; 1379 } 1380 1381 ret = bq27xxx_write(di, BQ27XXX_DM_CTRL, 0, true); 1382 if (ret < 0) 1383 goto out; 1384 1385 ret = bq27xxx_write(di, BQ27XXX_DM_CLASS, buf->class, true); 1386 if (ret < 0) 1387 goto out; 1388 1389 ret = bq27xxx_write(di, BQ27XXX_DM_BLOCK, buf->block, true); 1390 if (ret < 0) 1391 goto out; 1392 1393 BQ27XXX_MSLEEP(1); 1394 1395 ret = bq27xxx_write_block(di, BQ27XXX_DM_DATA, buf->data, BQ27XXX_DM_SZ); 1396 if (ret < 0) 1397 goto out; 1398 1399 ret = bq27xxx_write(di, BQ27XXX_DM_CKSUM, 1400 bq27xxx_battery_checksum_dm_block(buf), true); 1401 if (ret < 0) 1402 goto out; 1403 1404 /* DO NOT read BQ27XXX_DM_CKSUM here to verify it! That may cause NVM 1405 * corruption on the '425 chip (and perhaps others), which can damage 1406 * the chip. 1407 */ 1408 1409 if (cfgup) { 1410 BQ27XXX_MSLEEP(1); 1411 ret = bq27xxx_battery_soft_reset(di); 1412 if (ret < 0) 1413 return ret; 1414 } else { 1415 BQ27XXX_MSLEEP(100); /* flash DM updates in <100ms */ 1416 } 1417 1418 buf->dirty = false; 1419 1420 return 0; 1421 1422 out: 1423 if (cfgup) 1424 bq27xxx_battery_soft_reset(di); 1425 1426 dev_err(di->dev, "bus error writing chip memory: %d\n", ret); 1427 return ret; 1428 } 1429 1430 static void bq27xxx_battery_set_config(struct bq27xxx_device_info *di, 1431 struct power_supply_battery_info *info) 1432 { 1433 struct bq27xxx_dm_buf bd = BQ27XXX_DM_BUF(di, BQ27XXX_DM_DESIGN_CAPACITY); 1434 struct bq27xxx_dm_buf bt = BQ27XXX_DM_BUF(di, BQ27XXX_DM_TERMINATE_VOLTAGE); 1435 bool updated; 1436 1437 if (bq27xxx_battery_unseal(di) < 0) 1438 return; 1439 1440 if (info->charge_full_design_uah != -EINVAL && 1441 info->energy_full_design_uwh != -EINVAL) { 1442 bq27xxx_battery_read_dm_block(di, &bd); 1443 /* assume design energy & capacity are in same block */ 1444 bq27xxx_battery_update_dm_block(di, &bd, 1445 BQ27XXX_DM_DESIGN_CAPACITY, 1446 info->charge_full_design_uah / 1000); 1447 bq27xxx_battery_update_dm_block(di, &bd, 1448 BQ27XXX_DM_DESIGN_ENERGY, 1449 info->energy_full_design_uwh / 1000); 1450 } 1451 1452 if (info->voltage_min_design_uv != -EINVAL) { 1453 bool same = bd.class == bt.class && bd.block == bt.block; 1454 if (!same) 1455 bq27xxx_battery_read_dm_block(di, &bt); 1456 bq27xxx_battery_update_dm_block(di, same ? &bd : &bt, 1457 BQ27XXX_DM_TERMINATE_VOLTAGE, 1458 info->voltage_min_design_uv / 1000); 1459 } 1460 1461 updated = bd.dirty || bt.dirty; 1462 1463 bq27xxx_battery_write_dm_block(di, &bd); 1464 bq27xxx_battery_write_dm_block(di, &bt); 1465 1466 bq27xxx_battery_seal(di); 1467 1468 if (updated && !(di->opts & BQ27XXX_O_CFGUP)) { 1469 bq27xxx_write(di, BQ27XXX_REG_CTRL, BQ27XXX_RESET, false); 1470 BQ27XXX_MSLEEP(300); /* reset time is not documented */ 1471 } 1472 /* assume bq27xxx_battery_update() is called hereafter */ 1473 } 1474 1475 static void bq27xxx_battery_settings(struct bq27xxx_device_info *di) 1476 { 1477 struct power_supply_battery_info *info; 1478 unsigned int min, max; 1479 1480 if (power_supply_get_battery_info(di->bat, &info) < 0) 1481 return; 1482 1483 if (!di->dm_regs) { 1484 dev_warn(di->dev, "data memory update not supported for chip\n"); 1485 return; 1486 } 1487 1488 if (info->energy_full_design_uwh != info->charge_full_design_uah) { 1489 if (info->energy_full_design_uwh == -EINVAL) 1490 dev_warn(di->dev, "missing battery:energy-full-design-microwatt-hours\n"); 1491 else if (info->charge_full_design_uah == -EINVAL) 1492 dev_warn(di->dev, "missing battery:charge-full-design-microamp-hours\n"); 1493 } 1494 1495 /* assume min == 0 */ 1496 max = di->dm_regs[BQ27XXX_DM_DESIGN_ENERGY].max; 1497 if (info->energy_full_design_uwh > max * 1000) { 1498 dev_err(di->dev, "invalid battery:energy-full-design-microwatt-hours %d\n", 1499 info->energy_full_design_uwh); 1500 info->energy_full_design_uwh = -EINVAL; 1501 } 1502 1503 /* assume min == 0 */ 1504 max = di->dm_regs[BQ27XXX_DM_DESIGN_CAPACITY].max; 1505 if (info->charge_full_design_uah > max * 1000) { 1506 dev_err(di->dev, "invalid battery:charge-full-design-microamp-hours %d\n", 1507 info->charge_full_design_uah); 1508 info->charge_full_design_uah = -EINVAL; 1509 } 1510 1511 min = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].min; 1512 max = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].max; 1513 if ((info->voltage_min_design_uv < min * 1000 || 1514 info->voltage_min_design_uv > max * 1000) && 1515 info->voltage_min_design_uv != -EINVAL) { 1516 dev_err(di->dev, "invalid battery:voltage-min-design-microvolt %d\n", 1517 info->voltage_min_design_uv); 1518 info->voltage_min_design_uv = -EINVAL; 1519 } 1520 1521 if ((info->energy_full_design_uwh != -EINVAL && 1522 info->charge_full_design_uah != -EINVAL) || 1523 info->voltage_min_design_uv != -EINVAL) 1524 bq27xxx_battery_set_config(di, info); 1525 } 1526 1527 /* 1528 * Return the battery State-of-Charge 1529 * Or < 0 if something fails. 1530 */ 1531 static int bq27xxx_battery_read_soc(struct bq27xxx_device_info *di) 1532 { 1533 int soc; 1534 1535 if (di->opts & BQ27XXX_O_SOC_SI) 1536 soc = bq27xxx_read(di, BQ27XXX_REG_SOC, true); 1537 else 1538 soc = bq27xxx_read(di, BQ27XXX_REG_SOC, false); 1539 1540 if (soc < 0) 1541 dev_dbg(di->dev, "error reading State-of-Charge\n"); 1542 1543 return soc; 1544 } 1545 1546 /* 1547 * Return a battery charge value in µAh 1548 * Or < 0 if something fails. 1549 */ 1550 static int bq27xxx_battery_read_charge(struct bq27xxx_device_info *di, u8 reg) 1551 { 1552 int charge; 1553 1554 charge = bq27xxx_read(di, reg, false); 1555 if (charge < 0) { 1556 dev_dbg(di->dev, "error reading charge register %02x: %d\n", 1557 reg, charge); 1558 return charge; 1559 } 1560 1561 if (di->opts & BQ27XXX_O_ZERO) 1562 charge *= BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS; 1563 else 1564 charge *= 1000; 1565 1566 return charge; 1567 } 1568 1569 /* 1570 * Return the battery Nominal available capacity in µAh 1571 * Or < 0 if something fails. 1572 */ 1573 static inline int bq27xxx_battery_read_nac(struct bq27xxx_device_info *di) 1574 { 1575 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_NAC); 1576 } 1577 1578 /* 1579 * Return the battery Remaining Capacity in µAh 1580 * Or < 0 if something fails. 1581 */ 1582 static inline int bq27xxx_battery_read_rc(struct bq27xxx_device_info *di) 1583 { 1584 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_RC); 1585 } 1586 1587 /* 1588 * Return the battery Full Charge Capacity in µAh 1589 * Or < 0 if something fails. 1590 */ 1591 static inline int bq27xxx_battery_read_fcc(struct bq27xxx_device_info *di) 1592 { 1593 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_FCC); 1594 } 1595 1596 /* 1597 * Return the Design Capacity in µAh 1598 * Or < 0 if something fails. 1599 */ 1600 static int bq27xxx_battery_read_dcap(struct bq27xxx_device_info *di) 1601 { 1602 int dcap; 1603 1604 if (di->opts & BQ27XXX_O_ZERO) 1605 dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, true); 1606 else 1607 dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, false); 1608 1609 if (dcap < 0) { 1610 dev_dbg(di->dev, "error reading initial last measured discharge\n"); 1611 return dcap; 1612 } 1613 1614 if (di->opts & BQ27XXX_O_ZERO) 1615 dcap = (dcap << 8) * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS; 1616 else 1617 dcap *= 1000; 1618 1619 return dcap; 1620 } 1621 1622 /* 1623 * Return the battery Available energy in µWh 1624 * Or < 0 if something fails. 1625 */ 1626 static int bq27xxx_battery_read_energy(struct bq27xxx_device_info *di) 1627 { 1628 int ae; 1629 1630 ae = bq27xxx_read(di, BQ27XXX_REG_AE, false); 1631 if (ae < 0) { 1632 dev_dbg(di->dev, "error reading available energy\n"); 1633 return ae; 1634 } 1635 1636 if (di->opts & BQ27XXX_O_ZERO) 1637 ae *= BQ27XXX_POWER_CONSTANT / BQ27XXX_RS; 1638 else 1639 ae *= 1000; 1640 1641 return ae; 1642 } 1643 1644 /* 1645 * Return the battery temperature in tenths of degree Kelvin 1646 * Or < 0 if something fails. 1647 */ 1648 static int bq27xxx_battery_read_temperature(struct bq27xxx_device_info *di) 1649 { 1650 int temp; 1651 1652 temp = bq27xxx_read(di, BQ27XXX_REG_TEMP, false); 1653 if (temp < 0) { 1654 dev_err(di->dev, "error reading temperature\n"); 1655 return temp; 1656 } 1657 1658 if (di->opts & BQ27XXX_O_ZERO) 1659 temp = 5 * temp / 2; 1660 1661 return temp; 1662 } 1663 1664 /* 1665 * Return the battery Cycle count total 1666 * Or < 0 if something fails. 1667 */ 1668 static int bq27xxx_battery_read_cyct(struct bq27xxx_device_info *di) 1669 { 1670 int cyct; 1671 1672 cyct = bq27xxx_read(di, BQ27XXX_REG_CYCT, false); 1673 if (cyct < 0) 1674 dev_err(di->dev, "error reading cycle count total\n"); 1675 1676 return cyct; 1677 } 1678 1679 /* 1680 * Read a time register. 1681 * Return < 0 if something fails. 1682 */ 1683 static int bq27xxx_battery_read_time(struct bq27xxx_device_info *di, u8 reg) 1684 { 1685 int tval; 1686 1687 tval = bq27xxx_read(di, reg, false); 1688 if (tval < 0) { 1689 dev_dbg(di->dev, "error reading time register %02x: %d\n", 1690 reg, tval); 1691 return tval; 1692 } 1693 1694 if (tval == 65535) 1695 return -ENODATA; 1696 1697 return tval * 60; 1698 } 1699 1700 /* 1701 * Returns true if a battery over temperature condition is detected 1702 */ 1703 static bool bq27xxx_battery_overtemp(struct bq27xxx_device_info *di, u16 flags) 1704 { 1705 if (di->opts & BQ27XXX_O_OTDC) 1706 return flags & (BQ27XXX_FLAG_OTC | BQ27XXX_FLAG_OTD); 1707 if (di->opts & BQ27XXX_O_UTOT) 1708 return flags & BQ27XXX_FLAG_OT; 1709 1710 return false; 1711 } 1712 1713 /* 1714 * Returns true if a battery under temperature condition is detected 1715 */ 1716 static bool bq27xxx_battery_undertemp(struct bq27xxx_device_info *di, u16 flags) 1717 { 1718 if (di->opts & BQ27XXX_O_UTOT) 1719 return flags & BQ27XXX_FLAG_UT; 1720 1721 return false; 1722 } 1723 1724 /* 1725 * Returns true if a low state of charge condition is detected 1726 */ 1727 static bool bq27xxx_battery_dead(struct bq27xxx_device_info *di, u16 flags) 1728 { 1729 if (di->opts & BQ27XXX_O_ZERO) 1730 return flags & (BQ27000_FLAG_EDV1 | BQ27000_FLAG_EDVF); 1731 else if (di->opts & BQ27Z561_O_BITS) 1732 return flags & BQ27Z561_FLAG_FDC; 1733 else 1734 return flags & (BQ27XXX_FLAG_SOC1 | BQ27XXX_FLAG_SOCF); 1735 } 1736 1737 /* 1738 * Returns true if reported battery capacity is inaccurate 1739 */ 1740 static bool bq27xxx_battery_capacity_inaccurate(struct bq27xxx_device_info *di, 1741 u16 flags) 1742 { 1743 if (di->opts & BQ27XXX_O_HAS_CI) 1744 return (flags & BQ27000_FLAG_CI); 1745 else 1746 return false; 1747 } 1748 1749 static int bq27xxx_battery_read_health(struct bq27xxx_device_info *di) 1750 { 1751 /* Unlikely but important to return first */ 1752 if (unlikely(bq27xxx_battery_overtemp(di, di->cache.flags))) 1753 return POWER_SUPPLY_HEALTH_OVERHEAT; 1754 if (unlikely(bq27xxx_battery_undertemp(di, di->cache.flags))) 1755 return POWER_SUPPLY_HEALTH_COLD; 1756 if (unlikely(bq27xxx_battery_dead(di, di->cache.flags))) 1757 return POWER_SUPPLY_HEALTH_DEAD; 1758 if (unlikely(bq27xxx_battery_capacity_inaccurate(di, di->cache.flags))) 1759 return POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED; 1760 1761 return POWER_SUPPLY_HEALTH_GOOD; 1762 } 1763 1764 void bq27xxx_battery_update(struct bq27xxx_device_info *di) 1765 { 1766 struct bq27xxx_reg_cache cache = {0, }; 1767 bool has_singe_flag = di->opts & BQ27XXX_O_ZERO; 1768 1769 cache.flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, has_singe_flag); 1770 if ((cache.flags & 0xff) == 0xff) 1771 cache.flags = -1; /* read error */ 1772 if (cache.flags >= 0) { 1773 cache.temperature = bq27xxx_battery_read_temperature(di); 1774 if (di->regs[BQ27XXX_REG_TTE] != INVALID_REG_ADDR) 1775 cache.time_to_empty = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTE); 1776 if (di->regs[BQ27XXX_REG_TTECP] != INVALID_REG_ADDR) 1777 cache.time_to_empty_avg = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTECP); 1778 if (di->regs[BQ27XXX_REG_TTF] != INVALID_REG_ADDR) 1779 cache.time_to_full = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTF); 1780 1781 cache.charge_full = bq27xxx_battery_read_fcc(di); 1782 cache.capacity = bq27xxx_battery_read_soc(di); 1783 if (di->regs[BQ27XXX_REG_AE] != INVALID_REG_ADDR) 1784 cache.energy = bq27xxx_battery_read_energy(di); 1785 di->cache.flags = cache.flags; 1786 cache.health = bq27xxx_battery_read_health(di); 1787 if (di->regs[BQ27XXX_REG_CYCT] != INVALID_REG_ADDR) 1788 cache.cycle_count = bq27xxx_battery_read_cyct(di); 1789 1790 /* We only have to read charge design full once */ 1791 if (di->charge_design_full <= 0) 1792 di->charge_design_full = bq27xxx_battery_read_dcap(di); 1793 } 1794 1795 if ((di->cache.capacity != cache.capacity) || 1796 (di->cache.flags != cache.flags)) 1797 power_supply_changed(di->bat); 1798 1799 if (memcmp(&di->cache, &cache, sizeof(cache)) != 0) 1800 di->cache = cache; 1801 1802 di->last_update = jiffies; 1803 } 1804 EXPORT_SYMBOL_GPL(bq27xxx_battery_update); 1805 1806 static void bq27xxx_battery_poll(struct work_struct *work) 1807 { 1808 struct bq27xxx_device_info *di = 1809 container_of(work, struct bq27xxx_device_info, 1810 work.work); 1811 1812 bq27xxx_battery_update(di); 1813 1814 if (poll_interval > 0) 1815 schedule_delayed_work(&di->work, poll_interval * HZ); 1816 } 1817 1818 static bool bq27xxx_battery_is_full(struct bq27xxx_device_info *di, int flags) 1819 { 1820 if (di->opts & BQ27XXX_O_ZERO) 1821 return (flags & BQ27000_FLAG_FC); 1822 else if (di->opts & BQ27Z561_O_BITS) 1823 return (flags & BQ27Z561_FLAG_FC); 1824 else 1825 return (flags & BQ27XXX_FLAG_FC); 1826 } 1827 1828 /* 1829 * Return the battery average current in µA and the status 1830 * Note that current can be negative signed as well 1831 * Or 0 if something fails. 1832 */ 1833 static int bq27xxx_battery_current_and_status( 1834 struct bq27xxx_device_info *di, 1835 union power_supply_propval *val_curr, 1836 union power_supply_propval *val_status) 1837 { 1838 bool single_flags = (di->opts & BQ27XXX_O_ZERO); 1839 int curr; 1840 int flags; 1841 1842 curr = bq27xxx_read(di, BQ27XXX_REG_AI, false); 1843 if (curr < 0) { 1844 dev_err(di->dev, "error reading current\n"); 1845 return curr; 1846 } 1847 1848 flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, single_flags); 1849 if (flags < 0) { 1850 dev_err(di->dev, "error reading flags\n"); 1851 return flags; 1852 } 1853 1854 if (di->opts & BQ27XXX_O_ZERO) { 1855 if (!(flags & BQ27000_FLAG_CHGS)) { 1856 dev_dbg(di->dev, "negative current!\n"); 1857 curr = -curr; 1858 } 1859 1860 curr = curr * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS; 1861 } else { 1862 /* Other gauges return signed value */ 1863 curr = (int)((s16)curr) * 1000; 1864 } 1865 1866 if (val_curr) 1867 val_curr->intval = curr; 1868 1869 if (val_status) { 1870 if (curr > 0) { 1871 val_status->intval = POWER_SUPPLY_STATUS_CHARGING; 1872 } else if (curr < 0) { 1873 val_status->intval = POWER_SUPPLY_STATUS_DISCHARGING; 1874 } else { 1875 if (bq27xxx_battery_is_full(di, flags)) 1876 val_status->intval = POWER_SUPPLY_STATUS_FULL; 1877 else 1878 val_status->intval = 1879 POWER_SUPPLY_STATUS_NOT_CHARGING; 1880 } 1881 } 1882 1883 return 0; 1884 } 1885 1886 /* 1887 * Get the average power in µW 1888 * Return < 0 if something fails. 1889 */ 1890 static int bq27xxx_battery_pwr_avg(struct bq27xxx_device_info *di, 1891 union power_supply_propval *val) 1892 { 1893 int power; 1894 1895 power = bq27xxx_read(di, BQ27XXX_REG_AP, false); 1896 if (power < 0) { 1897 dev_err(di->dev, 1898 "error reading average power register %02x: %d\n", 1899 BQ27XXX_REG_AP, power); 1900 return power; 1901 } 1902 1903 if (di->opts & BQ27XXX_O_ZERO) 1904 val->intval = (power * BQ27XXX_POWER_CONSTANT) / BQ27XXX_RS; 1905 else 1906 /* Other gauges return a signed value in units of 10mW */ 1907 val->intval = (int)((s16)power) * 10000; 1908 1909 return 0; 1910 } 1911 1912 static int bq27xxx_battery_capacity_level(struct bq27xxx_device_info *di, 1913 union power_supply_propval *val) 1914 { 1915 int level; 1916 1917 if (di->opts & BQ27XXX_O_ZERO) { 1918 if (di->cache.flags & BQ27000_FLAG_FC) 1919 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; 1920 else if (di->cache.flags & BQ27000_FLAG_EDV1) 1921 level = POWER_SUPPLY_CAPACITY_LEVEL_LOW; 1922 else if (di->cache.flags & BQ27000_FLAG_EDVF) 1923 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 1924 else 1925 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 1926 } else if (di->opts & BQ27Z561_O_BITS) { 1927 if (di->cache.flags & BQ27Z561_FLAG_FC) 1928 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; 1929 else if (di->cache.flags & BQ27Z561_FLAG_FDC) 1930 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 1931 else 1932 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 1933 } else { 1934 if (di->cache.flags & BQ27XXX_FLAG_FC) 1935 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; 1936 else if (di->cache.flags & BQ27XXX_FLAG_SOC1) 1937 level = POWER_SUPPLY_CAPACITY_LEVEL_LOW; 1938 else if (di->cache.flags & BQ27XXX_FLAG_SOCF) 1939 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 1940 else 1941 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 1942 } 1943 1944 val->intval = level; 1945 1946 return 0; 1947 } 1948 1949 /* 1950 * Return the battery Voltage in millivolts 1951 * Or < 0 if something fails. 1952 */ 1953 static int bq27xxx_battery_voltage(struct bq27xxx_device_info *di, 1954 union power_supply_propval *val) 1955 { 1956 int volt; 1957 1958 volt = bq27xxx_read(di, BQ27XXX_REG_VOLT, false); 1959 if (volt < 0) { 1960 dev_err(di->dev, "error reading voltage\n"); 1961 return volt; 1962 } 1963 1964 val->intval = volt * 1000; 1965 1966 return 0; 1967 } 1968 1969 static int bq27xxx_simple_value(int value, 1970 union power_supply_propval *val) 1971 { 1972 if (value < 0) 1973 return value; 1974 1975 val->intval = value; 1976 1977 return 0; 1978 } 1979 1980 static int bq27xxx_battery_get_property(struct power_supply *psy, 1981 enum power_supply_property psp, 1982 union power_supply_propval *val) 1983 { 1984 int ret = 0; 1985 struct bq27xxx_device_info *di = power_supply_get_drvdata(psy); 1986 1987 mutex_lock(&di->lock); 1988 if (time_is_before_jiffies(di->last_update + 5 * HZ)) { 1989 cancel_delayed_work_sync(&di->work); 1990 bq27xxx_battery_poll(&di->work.work); 1991 } 1992 mutex_unlock(&di->lock); 1993 1994 if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0) 1995 return -ENODEV; 1996 1997 switch (psp) { 1998 case POWER_SUPPLY_PROP_STATUS: 1999 ret = bq27xxx_battery_current_and_status(di, NULL, val); 2000 break; 2001 case POWER_SUPPLY_PROP_VOLTAGE_NOW: 2002 ret = bq27xxx_battery_voltage(di, val); 2003 break; 2004 case POWER_SUPPLY_PROP_PRESENT: 2005 val->intval = di->cache.flags < 0 ? 0 : 1; 2006 break; 2007 case POWER_SUPPLY_PROP_CURRENT_NOW: 2008 ret = bq27xxx_battery_current_and_status(di, val, NULL); 2009 break; 2010 case POWER_SUPPLY_PROP_CAPACITY: 2011 ret = bq27xxx_simple_value(di->cache.capacity, val); 2012 break; 2013 case POWER_SUPPLY_PROP_CAPACITY_LEVEL: 2014 ret = bq27xxx_battery_capacity_level(di, val); 2015 break; 2016 case POWER_SUPPLY_PROP_TEMP: 2017 ret = bq27xxx_simple_value(di->cache.temperature, val); 2018 if (ret == 0) 2019 val->intval -= 2731; /* convert decidegree k to c */ 2020 break; 2021 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: 2022 ret = bq27xxx_simple_value(di->cache.time_to_empty, val); 2023 break; 2024 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG: 2025 ret = bq27xxx_simple_value(di->cache.time_to_empty_avg, val); 2026 break; 2027 case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: 2028 ret = bq27xxx_simple_value(di->cache.time_to_full, val); 2029 break; 2030 case POWER_SUPPLY_PROP_TECHNOLOGY: 2031 if (di->opts & BQ27XXX_O_MUL_CHEM) 2032 val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN; 2033 else 2034 val->intval = POWER_SUPPLY_TECHNOLOGY_LION; 2035 break; 2036 case POWER_SUPPLY_PROP_CHARGE_NOW: 2037 if (di->regs[BQ27XXX_REG_NAC] != INVALID_REG_ADDR) 2038 ret = bq27xxx_simple_value(bq27xxx_battery_read_nac(di), val); 2039 else 2040 ret = bq27xxx_simple_value(bq27xxx_battery_read_rc(di), val); 2041 break; 2042 case POWER_SUPPLY_PROP_CHARGE_FULL: 2043 ret = bq27xxx_simple_value(di->cache.charge_full, val); 2044 break; 2045 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: 2046 ret = bq27xxx_simple_value(di->charge_design_full, val); 2047 break; 2048 /* 2049 * TODO: Implement these to make registers set from 2050 * power_supply_battery_info visible in sysfs. 2051 */ 2052 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: 2053 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: 2054 return -EINVAL; 2055 case POWER_SUPPLY_PROP_CYCLE_COUNT: 2056 ret = bq27xxx_simple_value(di->cache.cycle_count, val); 2057 break; 2058 case POWER_SUPPLY_PROP_ENERGY_NOW: 2059 ret = bq27xxx_simple_value(di->cache.energy, val); 2060 break; 2061 case POWER_SUPPLY_PROP_POWER_AVG: 2062 ret = bq27xxx_battery_pwr_avg(di, val); 2063 break; 2064 case POWER_SUPPLY_PROP_HEALTH: 2065 ret = bq27xxx_simple_value(di->cache.health, val); 2066 break; 2067 case POWER_SUPPLY_PROP_MANUFACTURER: 2068 val->strval = BQ27XXX_MANUFACTURER; 2069 break; 2070 default: 2071 return -EINVAL; 2072 } 2073 2074 return ret; 2075 } 2076 2077 static void bq27xxx_external_power_changed(struct power_supply *psy) 2078 { 2079 struct bq27xxx_device_info *di = power_supply_get_drvdata(psy); 2080 2081 cancel_delayed_work_sync(&di->work); 2082 schedule_delayed_work(&di->work, 0); 2083 } 2084 2085 int bq27xxx_battery_setup(struct bq27xxx_device_info *di) 2086 { 2087 struct power_supply_desc *psy_desc; 2088 struct power_supply_config psy_cfg = { 2089 .of_node = di->dev->of_node, 2090 .drv_data = di, 2091 }; 2092 2093 INIT_DELAYED_WORK(&di->work, bq27xxx_battery_poll); 2094 mutex_init(&di->lock); 2095 2096 di->regs = bq27xxx_chip_data[di->chip].regs; 2097 di->unseal_key = bq27xxx_chip_data[di->chip].unseal_key; 2098 di->dm_regs = bq27xxx_chip_data[di->chip].dm_regs; 2099 di->opts = bq27xxx_chip_data[di->chip].opts; 2100 2101 psy_desc = devm_kzalloc(di->dev, sizeof(*psy_desc), GFP_KERNEL); 2102 if (!psy_desc) 2103 return -ENOMEM; 2104 2105 psy_desc->name = di->name; 2106 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 2107 psy_desc->properties = bq27xxx_chip_data[di->chip].props; 2108 psy_desc->num_properties = bq27xxx_chip_data[di->chip].props_size; 2109 psy_desc->get_property = bq27xxx_battery_get_property; 2110 psy_desc->external_power_changed = bq27xxx_external_power_changed; 2111 2112 di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg); 2113 if (IS_ERR(di->bat)) 2114 return dev_err_probe(di->dev, PTR_ERR(di->bat), 2115 "failed to register battery\n"); 2116 2117 bq27xxx_battery_settings(di); 2118 bq27xxx_battery_update(di); 2119 2120 mutex_lock(&bq27xxx_list_lock); 2121 list_add(&di->list, &bq27xxx_battery_devices); 2122 mutex_unlock(&bq27xxx_list_lock); 2123 2124 return 0; 2125 } 2126 EXPORT_SYMBOL_GPL(bq27xxx_battery_setup); 2127 2128 void bq27xxx_battery_teardown(struct bq27xxx_device_info *di) 2129 { 2130 /* 2131 * power_supply_unregister call bq27xxx_battery_get_property which 2132 * call bq27xxx_battery_poll. 2133 * Make sure that bq27xxx_battery_poll will not call 2134 * schedule_delayed_work again after unregister (which cause OOPS). 2135 */ 2136 poll_interval = 0; 2137 2138 cancel_delayed_work_sync(&di->work); 2139 2140 power_supply_unregister(di->bat); 2141 2142 mutex_lock(&bq27xxx_list_lock); 2143 list_del(&di->list); 2144 mutex_unlock(&bq27xxx_list_lock); 2145 2146 mutex_destroy(&di->lock); 2147 } 2148 EXPORT_SYMBOL_GPL(bq27xxx_battery_teardown); 2149 2150 MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>"); 2151 MODULE_DESCRIPTION("BQ27xxx battery monitor driver"); 2152 MODULE_LICENSE("GPL"); 2153