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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 | // SPDX-License-Identifier: GPL-2.0-only /* * Driver for Texas Instruments INA219, INA226 power monitor chips * * INA219: * Zero Drift Bi-Directional Current/Power Monitor with I2C Interface * Datasheet: https://www.ti.com/product/ina219 * * INA220: * Bi-Directional Current/Power Monitor with I2C Interface * Datasheet: https://www.ti.com/product/ina220 * * INA226: * Bi-Directional Current/Power Monitor with I2C Interface * Datasheet: https://www.ti.com/product/ina226 * * INA230: * Bi-directional Current/Power Monitor with I2C Interface * Datasheet: https://www.ti.com/product/ina230 * * Copyright (C) 2012 Lothar Felten <lothar.felten@gmail.com> * Thanks to Jan Volkering */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/jiffies.h> #include <linux/of.h> #include <linux/delay.h> #include <linux/util_macros.h> #include <linux/regmap.h> #include <linux/platform_data/ina2xx.h> /* common register definitions */ #define INA2XX_CONFIG 0x00 #define INA2XX_SHUNT_VOLTAGE 0x01 /* readonly */ #define INA2XX_BUS_VOLTAGE 0x02 /* readonly */ #define INA2XX_POWER 0x03 /* readonly */ #define INA2XX_CURRENT 0x04 /* readonly */ #define INA2XX_CALIBRATION 0x05 /* INA226 register definitions */ #define INA226_MASK_ENABLE 0x06 #define INA226_ALERT_LIMIT 0x07 #define INA226_DIE_ID 0xFF /* register count */ #define INA219_REGISTERS 6 #define INA226_REGISTERS 8 #define INA2XX_MAX_REGISTERS 8 /* settings - depend on use case */ #define INA219_CONFIG_DEFAULT 0x399F /* PGA=8 */ #define INA226_CONFIG_DEFAULT 0x4527 /* averages=16 */ /* worst case is 68.10 ms (~14.6Hz, ina219) */ #define INA2XX_CONVERSION_RATE 15 #define INA2XX_MAX_DELAY 69 /* worst case delay in ms */ #define INA2XX_RSHUNT_DEFAULT 10000 /* bit mask for reading the averaging setting in the configuration register */ #define INA226_AVG_RD_MASK 0x0E00 #define INA226_READ_AVG(reg) (((reg) & INA226_AVG_RD_MASK) >> 9) #define INA226_SHIFT_AVG(val) ((val) << 9) /* bit number of alert functions in Mask/Enable Register */ #define INA226_SHUNT_OVER_VOLTAGE_BIT 15 #define INA226_SHUNT_UNDER_VOLTAGE_BIT 14 #define INA226_BUS_OVER_VOLTAGE_BIT 13 #define INA226_BUS_UNDER_VOLTAGE_BIT 12 #define INA226_POWER_OVER_LIMIT_BIT 11 /* bit mask for alert config bits of Mask/Enable Register */ #define INA226_ALERT_CONFIG_MASK 0xFC00 #define INA226_ALERT_FUNCTION_FLAG BIT(4) /* common attrs, ina226 attrs and NULL */ #define INA2XX_MAX_ATTRIBUTE_GROUPS 3 /* * Both bus voltage and shunt voltage conversion times for ina226 are set * to 0b0100 on POR, which translates to 2200 microseconds in total. */ #define INA226_TOTAL_CONV_TIME_DEFAULT 2200 static struct regmap_config ina2xx_regmap_config = { .reg_bits = 8, .val_bits = 16, }; enum ina2xx_ids { ina219, ina226 }; struct ina2xx_config { u16 config_default; int calibration_value; int registers; int shunt_div; int bus_voltage_shift; int bus_voltage_lsb; /* uV */ int power_lsb_factor; }; struct ina2xx_data { const struct ina2xx_config *config; long rshunt; long current_lsb_uA; long power_lsb_uW; struct mutex config_lock; struct regmap *regmap; const struct attribute_group *groups[INA2XX_MAX_ATTRIBUTE_GROUPS]; }; static const struct ina2xx_config ina2xx_config[] = { [ina219] = { .config_default = INA219_CONFIG_DEFAULT, .calibration_value = 4096, .registers = INA219_REGISTERS, .shunt_div = 100, .bus_voltage_shift = 3, .bus_voltage_lsb = 4000, .power_lsb_factor = 20, }, [ina226] = { .config_default = INA226_CONFIG_DEFAULT, .calibration_value = 2048, .registers = INA226_REGISTERS, .shunt_div = 400, .bus_voltage_shift = 0, .bus_voltage_lsb = 1250, .power_lsb_factor = 25, }, }; /* * Available averaging rates for ina226. The indices correspond with * the bit values expected by the chip (according to the ina226 datasheet, * table 3 AVG bit settings, found at * https://www.ti.com/lit/ds/symlink/ina226.pdf. */ static const int ina226_avg_tab[] = { 1, 4, 16, 64, 128, 256, 512, 1024 }; static int ina226_reg_to_interval(u16 config) { int avg = ina226_avg_tab[INA226_READ_AVG(config)]; /* * Multiply the total conversion time by the number of averages. * Return the result in milliseconds. */ return DIV_ROUND_CLOSEST(avg * INA226_TOTAL_CONV_TIME_DEFAULT, 1000); } /* * Return the new, shifted AVG field value of CONFIG register, * to use with regmap_update_bits */ static u16 ina226_interval_to_reg(int interval) { int avg, avg_bits; avg = DIV_ROUND_CLOSEST(interval * 1000, INA226_TOTAL_CONV_TIME_DEFAULT); avg_bits = find_closest(avg, ina226_avg_tab, ARRAY_SIZE(ina226_avg_tab)); return INA226_SHIFT_AVG(avg_bits); } /* * Calibration register is set to the best value, which eliminates * truncation errors on calculating current register in hardware. * According to datasheet (eq. 3) the best values are 2048 for * ina226 and 4096 for ina219. They are hardcoded as calibration_value. */ static int ina2xx_calibrate(struct ina2xx_data *data) { return regmap_write(data->regmap, INA2XX_CALIBRATION, data->config->calibration_value); } /* * Initialize the configuration and calibration registers. */ static int ina2xx_init(struct ina2xx_data *data) { int ret = regmap_write(data->regmap, INA2XX_CONFIG, data->config->config_default); if (ret < 0) return ret; return ina2xx_calibrate(data); } static int ina2xx_read_reg(struct device *dev, int reg, unsigned int *regval) { struct ina2xx_data *data = dev_get_drvdata(dev); int ret, retry; dev_dbg(dev, "Starting register %d read\n", reg); for (retry = 5; retry; retry--) { ret = regmap_read(data->regmap, reg, regval); if (ret < 0) return ret; dev_dbg(dev, "read %d, val = 0x%04x\n", reg, *regval); /* * If the current value in the calibration register is 0, the * power and current registers will also remain at 0. In case * the chip has been reset let's check the calibration * register and reinitialize if needed. * We do that extra read of the calibration register if there * is some hint of a chip reset. */ if (*regval == 0) { unsigned int cal; ret = regmap_read(data->regmap, INA2XX_CALIBRATION, &cal); if (ret < 0) return ret; if (cal == 0) { dev_warn(dev, "chip not calibrated, reinitializing\n"); ret = ina2xx_init(data); if (ret < 0) return ret; /* * Let's make sure the power and current * registers have been updated before trying * again. */ msleep(INA2XX_MAX_DELAY); continue; } } return 0; } /* * If we're here then although all write operations succeeded, the * chip still returns 0 in the calibration register. Nothing more we * can do here. */ dev_err(dev, "unable to reinitialize the chip\n"); return -ENODEV; } static int ina2xx_get_value(struct ina2xx_data *data, u8 reg, unsigned int regval) { int val; switch (reg) { case INA2XX_SHUNT_VOLTAGE: /* signed register */ val = DIV_ROUND_CLOSEST((s16)regval, data->config->shunt_div); break; case INA2XX_BUS_VOLTAGE: val = (regval >> data->config->bus_voltage_shift) * data->config->bus_voltage_lsb; val = DIV_ROUND_CLOSEST(val, 1000); break; case INA2XX_POWER: val = regval * data->power_lsb_uW; break; case INA2XX_CURRENT: /* signed register, result in mA */ val = (s16)regval * data->current_lsb_uA; val = DIV_ROUND_CLOSEST(val, 1000); break; case INA2XX_CALIBRATION: val = regval; break; default: /* programmer goofed */ WARN_ON_ONCE(1); val = 0; break; } return val; } static ssize_t ina2xx_value_show(struct device *dev, struct device_attribute *da, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(da); struct ina2xx_data *data = dev_get_drvdata(dev); unsigned int regval; int err = ina2xx_read_reg(dev, attr->index, ®val); if (err < 0) return err; return sysfs_emit(buf, "%d\n", ina2xx_get_value(data, attr->index, regval)); } static int ina226_reg_to_alert(struct ina2xx_data *data, u8 bit, u16 regval) { int reg; switch (bit) { case INA226_SHUNT_OVER_VOLTAGE_BIT: case INA226_SHUNT_UNDER_VOLTAGE_BIT: reg = INA2XX_SHUNT_VOLTAGE; break; case INA226_BUS_OVER_VOLTAGE_BIT: case INA226_BUS_UNDER_VOLTAGE_BIT: reg = INA2XX_BUS_VOLTAGE; break; case INA226_POWER_OVER_LIMIT_BIT: reg = INA2XX_POWER; break; default: /* programmer goofed */ WARN_ON_ONCE(1); return 0; } return ina2xx_get_value(data, reg, regval); } /* * Turns alert limit values into register values. * Opposite of the formula in ina2xx_get_value(). */ static s16 ina226_alert_to_reg(struct ina2xx_data *data, u8 bit, int val) { switch (bit) { case INA226_SHUNT_OVER_VOLTAGE_BIT: case INA226_SHUNT_UNDER_VOLTAGE_BIT: val *= data->config->shunt_div; return clamp_val(val, SHRT_MIN, SHRT_MAX); case INA226_BUS_OVER_VOLTAGE_BIT: case INA226_BUS_UNDER_VOLTAGE_BIT: val = (val * 1000) << data->config->bus_voltage_shift; val = DIV_ROUND_CLOSEST(val, data->config->bus_voltage_lsb); return clamp_val(val, 0, SHRT_MAX); case INA226_POWER_OVER_LIMIT_BIT: val = DIV_ROUND_CLOSEST(val, data->power_lsb_uW); return clamp_val(val, 0, USHRT_MAX); default: /* programmer goofed */ WARN_ON_ONCE(1); return 0; } } static ssize_t ina226_alert_show(struct device *dev, struct device_attribute *da, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(da); struct ina2xx_data *data = dev_get_drvdata(dev); int regval; int val = 0; int ret; mutex_lock(&data->config_lock); ret = regmap_read(data->regmap, INA226_MASK_ENABLE, ®val); if (ret) goto abort; if (regval & BIT(attr->index)) { ret = regmap_read(data->regmap, INA226_ALERT_LIMIT, ®val); if (ret) goto abort; val = ina226_reg_to_alert(data, attr->index, regval); } ret = sysfs_emit(buf, "%d\n", val); abort: mutex_unlock(&data->config_lock); return ret; } static ssize_t ina226_alert_store(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { struct sensor_device_attribute *attr = to_sensor_dev_attr(da); struct ina2xx_data *data = dev_get_drvdata(dev); unsigned long val; int ret; ret = kstrtoul(buf, 10, &val); if (ret < 0) return ret; /* * Clear all alerts first to avoid accidentally triggering ALERT pin * due to register write sequence. Then, only enable the alert * if the value is non-zero. */ mutex_lock(&data->config_lock); ret = regmap_update_bits(data->regmap, INA226_MASK_ENABLE, INA226_ALERT_CONFIG_MASK, 0); if (ret < 0) goto abort; ret = regmap_write(data->regmap, INA226_ALERT_LIMIT, ina226_alert_to_reg(data, attr->index, val)); if (ret < 0) goto abort; if (val != 0) { ret = regmap_update_bits(data->regmap, INA226_MASK_ENABLE, INA226_ALERT_CONFIG_MASK, BIT(attr->index)); if (ret < 0) goto abort; } ret = count; abort: mutex_unlock(&data->config_lock); return ret; } static ssize_t ina226_alarm_show(struct device *dev, struct device_attribute *da, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(da); struct ina2xx_data *data = dev_get_drvdata(dev); int regval; int alarm = 0; int ret; ret = regmap_read(data->regmap, INA226_MASK_ENABLE, ®val); if (ret) return ret; alarm = (regval & BIT(attr->index)) && (regval & INA226_ALERT_FUNCTION_FLAG); return sysfs_emit(buf, "%d\n", alarm); } /* * In order to keep calibration register value fixed, the product * of current_lsb and shunt_resistor should also be fixed and equal * to shunt_voltage_lsb = 1 / shunt_div multiplied by 10^9 in order * to keep the scale. */ static int ina2xx_set_shunt(struct ina2xx_data *data, long val) { unsigned int dividend = DIV_ROUND_CLOSEST(1000000000, data->config->shunt_div); if (val <= 0 || val > dividend) return -EINVAL; mutex_lock(&data->config_lock); data->rshunt = val; data->current_lsb_uA = DIV_ROUND_CLOSEST(dividend, val); data->power_lsb_uW = data->config->power_lsb_factor * data->current_lsb_uA; mutex_unlock(&data->config_lock); return 0; } static ssize_t ina2xx_shunt_show(struct device *dev, struct device_attribute *da, char *buf) { struct ina2xx_data *data = dev_get_drvdata(dev); return sysfs_emit(buf, "%li\n", data->rshunt); } static ssize_t ina2xx_shunt_store(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { unsigned long val; int status; struct ina2xx_data *data = dev_get_drvdata(dev); status = kstrtoul(buf, 10, &val); if (status < 0) return status; status = ina2xx_set_shunt(data, val); if (status < 0) return status; return count; } static ssize_t ina226_interval_store(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { struct ina2xx_data *data = dev_get_drvdata(dev); unsigned long val; int status; status = kstrtoul(buf, 10, &val); if (status < 0) return status; if (val > INT_MAX || val == 0) return -EINVAL; status = regmap_update_bits(data->regmap, INA2XX_CONFIG, INA226_AVG_RD_MASK, ina226_interval_to_reg(val)); if (status < 0) return status; return count; } static ssize_t ina226_interval_show(struct device *dev, struct device_attribute *da, char *buf) { struct ina2xx_data *data = dev_get_drvdata(dev); int status; unsigned int regval; status = regmap_read(data->regmap, INA2XX_CONFIG, ®val); if (status) return status; return sysfs_emit(buf, "%d\n", ina226_reg_to_interval(regval)); } /* shunt voltage */ static SENSOR_DEVICE_ATTR_RO(in0_input, ina2xx_value, INA2XX_SHUNT_VOLTAGE); /* shunt voltage over/under voltage alert setting and alarm */ static SENSOR_DEVICE_ATTR_RW(in0_crit, ina226_alert, INA226_SHUNT_OVER_VOLTAGE_BIT); static SENSOR_DEVICE_ATTR_RW(in0_lcrit, ina226_alert, INA226_SHUNT_UNDER_VOLTAGE_BIT); static SENSOR_DEVICE_ATTR_RO(in0_crit_alarm, ina226_alarm, INA226_SHUNT_OVER_VOLTAGE_BIT); static SENSOR_DEVICE_ATTR_RO(in0_lcrit_alarm, ina226_alarm, INA226_SHUNT_UNDER_VOLTAGE_BIT); /* bus voltage */ static SENSOR_DEVICE_ATTR_RO(in1_input, ina2xx_value, INA2XX_BUS_VOLTAGE); /* bus voltage over/under voltage alert setting and alarm */ static SENSOR_DEVICE_ATTR_RW(in1_crit, ina226_alert, INA226_BUS_OVER_VOLTAGE_BIT); static SENSOR_DEVICE_ATTR_RW(in1_lcrit, ina226_alert, INA226_BUS_UNDER_VOLTAGE_BIT); static SENSOR_DEVICE_ATTR_RO(in1_crit_alarm, ina226_alarm, INA226_BUS_OVER_VOLTAGE_BIT); static SENSOR_DEVICE_ATTR_RO(in1_lcrit_alarm, ina226_alarm, INA226_BUS_UNDER_VOLTAGE_BIT); /* calculated current */ static SENSOR_DEVICE_ATTR_RO(curr1_input, ina2xx_value, INA2XX_CURRENT); /* calculated power */ static SENSOR_DEVICE_ATTR_RO(power1_input, ina2xx_value, INA2XX_POWER); /* over-limit power alert setting and alarm */ static SENSOR_DEVICE_ATTR_RW(power1_crit, ina226_alert, INA226_POWER_OVER_LIMIT_BIT); static SENSOR_DEVICE_ATTR_RO(power1_crit_alarm, ina226_alarm, INA226_POWER_OVER_LIMIT_BIT); /* shunt resistance */ static SENSOR_DEVICE_ATTR_RW(shunt_resistor, ina2xx_shunt, INA2XX_CALIBRATION); /* update interval (ina226 only) */ static SENSOR_DEVICE_ATTR_RW(update_interval, ina226_interval, 0); /* pointers to created device attributes */ static struct attribute *ina2xx_attrs[] = { &sensor_dev_attr_in0_input.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_curr1_input.dev_attr.attr, &sensor_dev_attr_power1_input.dev_attr.attr, &sensor_dev_attr_shunt_resistor.dev_attr.attr, NULL, }; static const struct attribute_group ina2xx_group = { .attrs = ina2xx_attrs, }; static struct attribute *ina226_attrs[] = { &sensor_dev_attr_in0_crit.dev_attr.attr, &sensor_dev_attr_in0_lcrit.dev_attr.attr, &sensor_dev_attr_in0_crit_alarm.dev_attr.attr, &sensor_dev_attr_in0_lcrit_alarm.dev_attr.attr, &sensor_dev_attr_in1_crit.dev_attr.attr, &sensor_dev_attr_in1_lcrit.dev_attr.attr, &sensor_dev_attr_in1_crit_alarm.dev_attr.attr, &sensor_dev_attr_in1_lcrit_alarm.dev_attr.attr, &sensor_dev_attr_power1_crit.dev_attr.attr, &sensor_dev_attr_power1_crit_alarm.dev_attr.attr, &sensor_dev_attr_update_interval.dev_attr.attr, NULL, }; static const struct attribute_group ina226_group = { .attrs = ina226_attrs, }; static const struct i2c_device_id ina2xx_id[]; static int ina2xx_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct ina2xx_data *data; struct device *hwmon_dev; u32 val; int ret, group = 0; enum ina2xx_ids chip; if (client->dev.of_node) chip = (uintptr_t)of_device_get_match_data(&client->dev); else chip = i2c_match_id(ina2xx_id, client)->driver_data; data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; /* set the device type */ data->config = &ina2xx_config[chip]; mutex_init(&data->config_lock); if (of_property_read_u32(dev->of_node, "shunt-resistor", &val) < 0) { struct ina2xx_platform_data *pdata = dev_get_platdata(dev); if (pdata) val = pdata->shunt_uohms; else val = INA2XX_RSHUNT_DEFAULT; } ina2xx_set_shunt(data, val); ina2xx_regmap_config.max_register = data->config->registers; data->regmap = devm_regmap_init_i2c(client, &ina2xx_regmap_config); if (IS_ERR(data->regmap)) { dev_err(dev, "failed to allocate register map\n"); return PTR_ERR(data->regmap); } ret = devm_regulator_get_enable(dev, "vs"); if (ret) return dev_err_probe(dev, ret, "failed to enable vs regulator\n"); ret = ina2xx_init(data); if (ret < 0) { dev_err(dev, "error configuring the device: %d\n", ret); return -ENODEV; } data->groups[group++] = &ina2xx_group; if (chip == ina226) data->groups[group++] = &ina226_group; hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, data, data->groups); if (IS_ERR(hwmon_dev)) return PTR_ERR(hwmon_dev); dev_info(dev, "power monitor %s (Rshunt = %li uOhm)\n", client->name, data->rshunt); return 0; } static const struct i2c_device_id ina2xx_id[] = { { "ina219", ina219 }, { "ina220", ina219 }, { "ina226", ina226 }, { "ina230", ina226 }, { "ina231", ina226 }, { } }; MODULE_DEVICE_TABLE(i2c, ina2xx_id); static const struct of_device_id __maybe_unused ina2xx_of_match[] = { { .compatible = "ti,ina219", .data = (void *)ina219 }, { .compatible = "ti,ina220", .data = (void *)ina219 }, { .compatible = "ti,ina226", .data = (void *)ina226 }, { .compatible = "ti,ina230", .data = (void *)ina226 }, { .compatible = "ti,ina231", .data = (void *)ina226 }, { }, }; MODULE_DEVICE_TABLE(of, ina2xx_of_match); static struct i2c_driver ina2xx_driver = { .driver = { .name = "ina2xx", .of_match_table = of_match_ptr(ina2xx_of_match), }, .probe = ina2xx_probe, .id_table = ina2xx_id, }; module_i2c_driver(ina2xx_driver); MODULE_AUTHOR("Lothar Felten <l-felten@ti.com>"); MODULE_DESCRIPTION("ina2xx driver"); MODULE_LICENSE("GPL"); |