2203 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives4 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.5 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>6 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>7 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>8 *9 * Derived from the lm83 driver by Jean Delvare10 */11 12#include <linux/module.h>13#include <linux/init.h>14#include <linux/slab.h>15#include <linux/i2c.h>16#include <linux/hwmon.h>17#include <linux/hwmon-sysfs.h>18#include <linux/hwmon-vid.h>19#include <linux/err.h>20#include <linux/jiffies.h>21#include <linux/of.h>22#include <linux/util_macros.h>23 24#include <dt-bindings/pwm/pwm.h>25 26/* Indexes for the sysfs hooks */27enum adt_sysfs_id {28 INPUT = 0,29 MIN = 1,30 MAX = 2,31 CONTROL = 3,32 OFFSET = 3, // Dup33 AUTOMIN = 4,34 THERM = 5,35 HYSTERSIS = 6,36/*37 * These are unique identifiers for the sysfs functions - unlike the38 * numbers above, these are not also indexes into an array39 */40 ALARM = 9,41 FAULT = 10,42};43 44 45/* 7475 Common Registers */46 47#define REG_DEVREV2 0x12 /* ADT7490 only */48#define REG_IMON 0x1D /* ADT7490 only */49 50#define REG_VTT 0x1E /* ADT7490 only */51#define REG_EXTEND3 0x1F /* ADT7490 only */52 53#define REG_VOLTAGE_BASE 0x2054#define REG_TEMP_BASE 0x2555#define REG_TACH_BASE 0x2856#define REG_PWM_BASE 0x3057#define REG_PWM_MAX_BASE 0x3858 59#define REG_DEVID 0x3D60#define REG_VENDID 0x3E61#define REG_DEVID2 0x3F62 63#define REG_CONFIG1 0x4064 65#define REG_STATUS1 0x4166#define REG_STATUS2 0x4267 68#define REG_VID 0x43 /* ADT7476 only */69 70#define REG_VOLTAGE_MIN_BASE 0x4471#define REG_VOLTAGE_MAX_BASE 0x4572 73#define REG_TEMP_MIN_BASE 0x4E74#define REG_TEMP_MAX_BASE 0x4F75 76#define REG_TACH_MIN_BASE 0x5477 78#define REG_PWM_CONFIG_BASE 0x5C79 80#define REG_TEMP_TRANGE_BASE 0x5F81 82#define REG_ENHANCE_ACOUSTICS1 0x6283#define REG_ENHANCE_ACOUSTICS2 0x6384 85#define REG_PWM_MIN_BASE 0x6486 87#define REG_TEMP_TMIN_BASE 0x6788#define REG_TEMP_THERM_BASE 0x6A89 90#define REG_REMOTE1_HYSTERSIS 0x6D91#define REG_REMOTE2_HYSTERSIS 0x6E92 93#define REG_TEMP_OFFSET_BASE 0x7094 95#define REG_CONFIG2 0x7396 97#define REG_EXTEND1 0x7698#define REG_EXTEND2 0x7799 100#define REG_CONFIG3 0x78101#define REG_CONFIG5 0x7C102#define REG_CONFIG4 0x7D103 104#define REG_STATUS4 0x81 /* ADT7490 only */105 106#define REG_VTT_MIN 0x84 /* ADT7490 only */107#define REG_VTT_MAX 0x86 /* ADT7490 only */108 109#define REG_IMON_MIN 0x85 /* ADT7490 only */110#define REG_IMON_MAX 0x87 /* ADT7490 only */111 112#define VID_VIDSEL 0x80 /* ADT7476 only */113 114#define CONFIG2_ATTN 0x20115 116#define CONFIG3_SMBALERT 0x01117#define CONFIG3_THERM 0x02118 119#define CONFIG4_PINFUNC 0x03120#define CONFIG4_THERM 0x01121#define CONFIG4_SMBALERT 0x02122#define CONFIG4_MAXDUTY 0x08123#define CONFIG4_ATTN_IN10 0x30124#define CONFIG4_ATTN_IN43 0xC0125 126#define CONFIG5_TWOSCOMP 0x01127#define CONFIG5_TEMPOFFSET 0x02128#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */129 130/* ADT7475 Settings */131 132#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt or Imon */133#define ADT7475_TEMP_COUNT 3134#define ADT7475_TACH_COUNT 4135#define ADT7475_PWM_COUNT 3136 137/* Macro to read the registers */138 139#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))140 141/* Macros to easily index the registers */142 143#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))144#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))145 146#define PWM_REG(idx) (REG_PWM_BASE + (idx))147#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))148#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))149#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))150 151#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))152#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))153#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))154 155#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))156#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))157#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))158#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))159#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))160#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))161#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))162 163static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };164 165enum chips { adt7473, adt7475, adt7476, adt7490 };166 167static const struct i2c_device_id adt7475_id[] = {168 { "adt7473", adt7473 },169 { "adt7475", adt7475 },170 { "adt7476", adt7476 },171 { "adt7490", adt7490 },172 { }173};174MODULE_DEVICE_TABLE(i2c, adt7475_id);175 176static const struct of_device_id __maybe_unused adt7475_of_match[] = {177 {178 .compatible = "adi,adt7473",179 .data = (void *)adt7473180 },181 {182 .compatible = "adi,adt7475",183 .data = (void *)adt7475184 },185 {186 .compatible = "adi,adt7476",187 .data = (void *)adt7476188 },189 {190 .compatible = "adi,adt7490",191 .data = (void *)adt7490192 },193 { },194};195MODULE_DEVICE_TABLE(of, adt7475_of_match);196 197struct adt7475_data {198 struct i2c_client *client;199 struct mutex lock;200 201 unsigned long measure_updated;202 bool valid;203 204 u8 config2;205 u8 config4;206 u8 config5;207 u8 has_voltage;208 u8 bypass_attn; /* Bypass voltage attenuator */209 u8 has_pwm2:1;210 u8 has_fan4:1;211 u8 has_vid:1;212 u32 alarms;213 u16 voltage[3][7];214 u16 temp[7][3];215 u16 tach[2][4];216 u8 pwm[4][3];217 u8 range[3];218 u8 pwmctl[3];219 u8 pwmchan[3];220 u8 enh_acoustics[2];221 222 u8 vid;223 u8 vrm;224 const struct attribute_group *groups[10];225};226 227static struct i2c_driver adt7475_driver;228static struct adt7475_data *adt7475_update_device(struct device *dev);229static void adt7475_read_hystersis(struct i2c_client *client);230static void adt7475_read_pwm(struct i2c_client *client, int index);231 232/* Given a temp value, convert it to register value */233 234static inline u16 temp2reg(struct adt7475_data *data, long val)235{236 u16 ret;237 238 if (!(data->config5 & CONFIG5_TWOSCOMP)) {239 val = clamp_val(val, -64000, 191000);240 ret = (val + 64500) / 1000;241 } else {242 val = clamp_val(val, -128000, 127000);243 if (val < -500)244 ret = (256500 + val) / 1000;245 else246 ret = (val + 500) / 1000;247 }248 249 return ret << 2;250}251 252/* Given a register value, convert it to a real temp value */253 254static inline int reg2temp(struct adt7475_data *data, u16 reg)255{256 if (data->config5 & CONFIG5_TWOSCOMP) {257 if (reg >= 512)258 return (reg - 1024) * 250;259 else260 return reg * 250;261 } else262 return (reg - 256) * 250;263}264 265static inline int tach2rpm(u16 tach)266{267 if (tach == 0 || tach == 0xFFFF)268 return 0;269 270 return (90000 * 60) / tach;271}272 273static inline u16 rpm2tach(unsigned long rpm)274{275 if (rpm == 0)276 return 0;277 278 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);279}280 281/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */282static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 2][2] = {283 { 45, 94 }, /* +2.5V */284 { 175, 525 }, /* Vccp */285 { 68, 71 }, /* Vcc */286 { 93, 47 }, /* +5V */287 { 120, 20 }, /* +12V */288 { 45, 45 }, /* Vtt */289 { 45, 45 }, /* Imon */290};291 292static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)293{294 const int *r = adt7473_in_scaling[channel];295 296 if (bypass_attn & (1 << channel))297 return DIV_ROUND_CLOSEST(reg * 2250, 1024);298 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);299}300 301static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)302{303 const int *r = adt7473_in_scaling[channel];304 long reg;305 306 if (bypass_attn & (1 << channel))307 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);308 else309 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,310 (r[0] + r[1]) * 2250);311 return clamp_val(reg, 0, 1023) & (0xff << 2);312}313 314static int adt7475_read_word(struct i2c_client *client, int reg)315{316 int val1, val2;317 318 val1 = i2c_smbus_read_byte_data(client, reg);319 if (val1 < 0)320 return val1;321 val2 = i2c_smbus_read_byte_data(client, reg + 1);322 if (val2 < 0)323 return val2;324 325 return val1 | (val2 << 8);326}327 328static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)329{330 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);331 i2c_smbus_write_byte_data(client, reg, val & 0xFF);332}333 334static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,335 char *buf)336{337 struct adt7475_data *data = adt7475_update_device(dev);338 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);339 unsigned short val;340 341 if (IS_ERR(data))342 return PTR_ERR(data);343 344 switch (sattr->nr) {345 case ALARM:346 return sprintf(buf, "%d\n",347 (data->alarms >> sattr->index) & 1);348 default:349 val = data->voltage[sattr->nr][sattr->index];350 return sprintf(buf, "%d\n",351 reg2volt(sattr->index, val, data->bypass_attn));352 }353}354 355static ssize_t voltage_store(struct device *dev,356 struct device_attribute *attr, const char *buf,357 size_t count)358{359 360 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);361 struct adt7475_data *data = dev_get_drvdata(dev);362 struct i2c_client *client = data->client;363 unsigned char reg;364 long val;365 366 if (kstrtol(buf, 10, &val))367 return -EINVAL;368 369 mutex_lock(&data->lock);370 371 data->voltage[sattr->nr][sattr->index] =372 volt2reg(sattr->index, val, data->bypass_attn);373 374 if (sattr->index < ADT7475_VOLTAGE_COUNT) {375 if (sattr->nr == MIN)376 reg = VOLTAGE_MIN_REG(sattr->index);377 else378 reg = VOLTAGE_MAX_REG(sattr->index);379 } else if (sattr->index == 5) {380 if (sattr->nr == MIN)381 reg = REG_VTT_MIN;382 else383 reg = REG_VTT_MAX;384 } else {385 if (sattr->nr == MIN)386 reg = REG_IMON_MIN;387 else388 reg = REG_IMON_MAX;389 }390 391 i2c_smbus_write_byte_data(client, reg,392 data->voltage[sattr->nr][sattr->index] >> 2);393 mutex_unlock(&data->lock);394 395 return count;396}397 398static ssize_t temp_show(struct device *dev, struct device_attribute *attr,399 char *buf)400{401 struct adt7475_data *data = adt7475_update_device(dev);402 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);403 int out;404 405 if (IS_ERR(data))406 return PTR_ERR(data);407 408 switch (sattr->nr) {409 case HYSTERSIS:410 mutex_lock(&data->lock);411 out = data->temp[sattr->nr][sattr->index];412 if (sattr->index != 1)413 out = (out >> 4) & 0xF;414 else415 out = (out & 0xF);416 /*417 * Show the value as an absolute number tied to418 * THERM419 */420 out = reg2temp(data, data->temp[THERM][sattr->index]) -421 out * 1000;422 mutex_unlock(&data->lock);423 break;424 425 case OFFSET:426 /*427 * Offset is always 2's complement, regardless of the428 * setting in CONFIG5429 */430 mutex_lock(&data->lock);431 out = (s8)data->temp[sattr->nr][sattr->index];432 if (data->config5 & CONFIG5_TEMPOFFSET)433 out *= 1000;434 else435 out *= 500;436 mutex_unlock(&data->lock);437 break;438 439 case ALARM:440 out = (data->alarms >> (sattr->index + 4)) & 1;441 break;442 443 case FAULT:444 /* Note - only for remote1 and remote2 */445 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));446 break;447 448 default:449 /* All other temp values are in the configured format */450 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);451 }452 453 return sprintf(buf, "%d\n", out);454}455 456static ssize_t temp_store(struct device *dev, struct device_attribute *attr,457 const char *buf, size_t count)458{459 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);460 struct adt7475_data *data = dev_get_drvdata(dev);461 struct i2c_client *client = data->client;462 unsigned char reg = 0;463 u8 out;464 int temp;465 long val;466 467 if (kstrtol(buf, 10, &val))468 return -EINVAL;469 470 mutex_lock(&data->lock);471 472 /* We need the config register in all cases for temp <-> reg conv. */473 data->config5 = adt7475_read(REG_CONFIG5);474 475 switch (sattr->nr) {476 case OFFSET:477 if (data->config5 & CONFIG5_TEMPOFFSET) {478 val = clamp_val(val, -63000, 127000);479 out = data->temp[OFFSET][sattr->index] = val / 1000;480 } else {481 val = clamp_val(val, -63000, 64000);482 out = data->temp[OFFSET][sattr->index] = val / 500;483 }484 break;485 486 case HYSTERSIS:487 /*488 * The value will be given as an absolute value, turn it489 * into an offset based on THERM490 */491 492 /* Read fresh THERM and HYSTERSIS values from the chip */493 data->temp[THERM][sattr->index] =494 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;495 adt7475_read_hystersis(client);496 497 temp = reg2temp(data, data->temp[THERM][sattr->index]);498 val = clamp_val(val, temp - 15000, temp);499 val = (temp - val) / 1000;500 501 if (sattr->index != 1) {502 data->temp[HYSTERSIS][sattr->index] &= 0x0F;503 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;504 } else {505 data->temp[HYSTERSIS][sattr->index] &= 0xF0;506 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);507 }508 509 out = data->temp[HYSTERSIS][sattr->index];510 break;511 512 default:513 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);514 515 /*516 * We maintain an extra 2 digits of precision for simplicity517 * - shift those back off before writing the value518 */519 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);520 }521 522 switch (sattr->nr) {523 case MIN:524 reg = TEMP_MIN_REG(sattr->index);525 break;526 case MAX:527 reg = TEMP_MAX_REG(sattr->index);528 break;529 case OFFSET:530 reg = TEMP_OFFSET_REG(sattr->index);531 break;532 case AUTOMIN:533 reg = TEMP_TMIN_REG(sattr->index);534 break;535 case THERM:536 reg = TEMP_THERM_REG(sattr->index);537 break;538 case HYSTERSIS:539 if (sattr->index != 2)540 reg = REG_REMOTE1_HYSTERSIS;541 else542 reg = REG_REMOTE2_HYSTERSIS;543 544 break;545 }546 547 i2c_smbus_write_byte_data(client, reg, out);548 549 mutex_unlock(&data->lock);550 return count;551}552 553/* Assuming CONFIG6[SLOW] is 0 */554static const int ad7475_st_map[] = {555 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,556};557 558static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,559 char *buf)560{561 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);562 struct adt7475_data *data = dev_get_drvdata(dev);563 long val;564 565 switch (sattr->index) {566 case 0:567 val = data->enh_acoustics[0] & 0xf;568 break;569 case 1:570 val = data->enh_acoustics[1] & 0xf;571 break;572 case 2:573 default:574 val = (data->enh_acoustics[1] >> 4) & 0xf;575 break;576 }577 578 if (val & 0x8)579 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);580 else581 return sprintf(buf, "0\n");582}583 584static ssize_t temp_st_store(struct device *dev,585 struct device_attribute *attr, const char *buf,586 size_t count)587{588 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);589 struct adt7475_data *data = dev_get_drvdata(dev);590 struct i2c_client *client = data->client;591 unsigned char reg;592 int shift, idx;593 ulong val;594 595 if (kstrtoul(buf, 10, &val))596 return -EINVAL;597 598 switch (sattr->index) {599 case 0:600 reg = REG_ENHANCE_ACOUSTICS1;601 shift = 0;602 idx = 0;603 break;604 case 1:605 reg = REG_ENHANCE_ACOUSTICS2;606 shift = 0;607 idx = 1;608 break;609 case 2:610 default:611 reg = REG_ENHANCE_ACOUSTICS2;612 shift = 4;613 idx = 1;614 break;615 }616 617 if (val > 0) {618 val = find_closest_descending(val, ad7475_st_map,619 ARRAY_SIZE(ad7475_st_map));620 val |= 0x8;621 }622 623 mutex_lock(&data->lock);624 625 data->enh_acoustics[idx] &= ~(0xf << shift);626 data->enh_acoustics[idx] |= (val << shift);627 628 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);629 630 mutex_unlock(&data->lock);631 632 return count;633}634 635/*636 * Table of autorange values - the user will write the value in millidegrees,637 * and we'll convert it638 */639static const int autorange_table[] = {640 2000, 2500, 3330, 4000, 5000, 6670, 8000,641 10000, 13330, 16000, 20000, 26670, 32000, 40000,642 53330, 80000643};644 645static ssize_t point2_show(struct device *dev, struct device_attribute *attr,646 char *buf)647{648 struct adt7475_data *data = adt7475_update_device(dev);649 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);650 int out, val;651 652 if (IS_ERR(data))653 return PTR_ERR(data);654 655 mutex_lock(&data->lock);656 out = (data->range[sattr->index] >> 4) & 0x0F;657 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);658 mutex_unlock(&data->lock);659 660 return sprintf(buf, "%d\n", val + autorange_table[out]);661}662 663static ssize_t point2_store(struct device *dev, struct device_attribute *attr,664 const char *buf, size_t count)665{666 struct adt7475_data *data = dev_get_drvdata(dev);667 struct i2c_client *client = data->client;668 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);669 int temp;670 long val;671 672 if (kstrtol(buf, 10, &val))673 return -EINVAL;674 675 mutex_lock(&data->lock);676 677 /* Get a fresh copy of the needed registers */678 data->config5 = adt7475_read(REG_CONFIG5);679 data->temp[AUTOMIN][sattr->index] =680 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;681 data->range[sattr->index] =682 adt7475_read(TEMP_TRANGE_REG(sattr->index));683 684 /*685 * The user will write an absolute value, so subtract the start point686 * to figure the range687 */688 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);689 val = clamp_val(val, temp + autorange_table[0],690 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);691 val -= temp;692 693 /* Find the nearest table entry to what the user wrote */694 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));695 696 data->range[sattr->index] &= ~0xF0;697 data->range[sattr->index] |= val << 4;698 699 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),700 data->range[sattr->index]);701 702 mutex_unlock(&data->lock);703 return count;704}705 706static ssize_t tach_show(struct device *dev, struct device_attribute *attr,707 char *buf)708{709 struct adt7475_data *data = adt7475_update_device(dev);710 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);711 int out;712 713 if (IS_ERR(data))714 return PTR_ERR(data);715 716 if (sattr->nr == ALARM)717 out = (data->alarms >> (sattr->index + 10)) & 1;718 else719 out = tach2rpm(data->tach[sattr->nr][sattr->index]);720 721 return sprintf(buf, "%d\n", out);722}723 724static ssize_t tach_store(struct device *dev, struct device_attribute *attr,725 const char *buf, size_t count)726{727 728 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);729 struct adt7475_data *data = dev_get_drvdata(dev);730 struct i2c_client *client = data->client;731 unsigned long val;732 733 if (kstrtoul(buf, 10, &val))734 return -EINVAL;735 736 mutex_lock(&data->lock);737 738 data->tach[MIN][sattr->index] = rpm2tach(val);739 740 adt7475_write_word(client, TACH_MIN_REG(sattr->index),741 data->tach[MIN][sattr->index]);742 743 mutex_unlock(&data->lock);744 return count;745}746 747static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,748 char *buf)749{750 struct adt7475_data *data = adt7475_update_device(dev);751 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);752 753 if (IS_ERR(data))754 return PTR_ERR(data);755 756 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);757}758 759static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,760 char *buf)761{762 struct adt7475_data *data = adt7475_update_device(dev);763 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);764 765 if (IS_ERR(data))766 return PTR_ERR(data);767 768 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);769}770 771static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,772 char *buf)773{774 struct adt7475_data *data = adt7475_update_device(dev);775 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);776 777 if (IS_ERR(data))778 return PTR_ERR(data);779 780 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);781}782 783static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,784 const char *buf, size_t count)785{786 787 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);788 struct adt7475_data *data = dev_get_drvdata(dev);789 struct i2c_client *client = data->client;790 unsigned char reg = 0;791 long val;792 793 if (kstrtol(buf, 10, &val))794 return -EINVAL;795 796 mutex_lock(&data->lock);797 798 switch (sattr->nr) {799 case INPUT:800 /* Get a fresh value for CONTROL */801 data->pwm[CONTROL][sattr->index] =802 adt7475_read(PWM_CONFIG_REG(sattr->index));803 804 /*805 * If we are not in manual mode, then we shouldn't allow806 * the user to set the pwm speed807 */808 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {809 mutex_unlock(&data->lock);810 return count;811 }812 813 reg = PWM_REG(sattr->index);814 break;815 816 case MIN:817 reg = PWM_MIN_REG(sattr->index);818 break;819 820 case MAX:821 reg = PWM_MAX_REG(sattr->index);822 break;823 }824 825 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);826 i2c_smbus_write_byte_data(client, reg,827 data->pwm[sattr->nr][sattr->index]);828 mutex_unlock(&data->lock);829 830 return count;831}832 833static ssize_t stall_disable_show(struct device *dev,834 struct device_attribute *attr, char *buf)835{836 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);837 struct adt7475_data *data = dev_get_drvdata(dev);838 839 u8 mask = BIT(5 + sattr->index);840 841 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));842}843 844static ssize_t stall_disable_store(struct device *dev,845 struct device_attribute *attr,846 const char *buf, size_t count)847{848 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);849 struct adt7475_data *data = dev_get_drvdata(dev);850 struct i2c_client *client = data->client;851 long val;852 u8 mask = BIT(5 + sattr->index);853 854 if (kstrtol(buf, 10, &val))855 return -EINVAL;856 857 mutex_lock(&data->lock);858 859 data->enh_acoustics[0] &= ~mask;860 if (val)861 data->enh_acoustics[0] |= mask;862 863 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,864 data->enh_acoustics[0]);865 866 mutex_unlock(&data->lock);867 868 return count;869}870 871/* Called by set_pwmctrl and set_pwmchan */872 873static int hw_set_pwm(struct i2c_client *client, int index,874 unsigned int pwmctl, unsigned int pwmchan)875{876 struct adt7475_data *data = i2c_get_clientdata(client);877 long val = 0;878 879 switch (pwmctl) {880 case 0:881 val = 0x03; /* Run at full speed */882 break;883 case 1:884 val = 0x07; /* Manual mode */885 break;886 case 2:887 switch (pwmchan) {888 case 1:889 /* Remote1 controls PWM */890 val = 0x00;891 break;892 case 2:893 /* local controls PWM */894 val = 0x01;895 break;896 case 4:897 /* remote2 controls PWM */898 val = 0x02;899 break;900 case 6:901 /* local/remote2 control PWM */902 val = 0x05;903 break;904 case 7:905 /* All three control PWM */906 val = 0x06;907 break;908 default:909 return -EINVAL;910 }911 break;912 default:913 return -EINVAL;914 }915 916 data->pwmctl[index] = pwmctl;917 data->pwmchan[index] = pwmchan;918 919 data->pwm[CONTROL][index] &= ~0xE0;920 data->pwm[CONTROL][index] |= (val & 7) << 5;921 922 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),923 data->pwm[CONTROL][index]);924 925 return 0;926}927 928static ssize_t pwmchan_store(struct device *dev,929 struct device_attribute *attr, const char *buf,930 size_t count)931{932 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);933 struct adt7475_data *data = dev_get_drvdata(dev);934 struct i2c_client *client = data->client;935 int r;936 long val;937 938 if (kstrtol(buf, 10, &val))939 return -EINVAL;940 941 mutex_lock(&data->lock);942 /* Read Modify Write PWM values */943 adt7475_read_pwm(client, sattr->index);944 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);945 if (r)946 count = r;947 mutex_unlock(&data->lock);948 949 return count;950}951 952static ssize_t pwmctrl_store(struct device *dev,953 struct device_attribute *attr, const char *buf,954 size_t count)955{956 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);957 struct adt7475_data *data = dev_get_drvdata(dev);958 struct i2c_client *client = data->client;959 int r;960 long val;961 962 if (kstrtol(buf, 10, &val))963 return -EINVAL;964 965 mutex_lock(&data->lock);966 /* Read Modify Write PWM values */967 adt7475_read_pwm(client, sattr->index);968 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);969 if (r)970 count = r;971 mutex_unlock(&data->lock);972 973 return count;974}975 976/* List of frequencies for the PWM */977static const int pwmfreq_table[] = {978 11, 14, 22, 29, 35, 44, 58, 88, 22500979};980 981static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,982 char *buf)983{984 struct adt7475_data *data = adt7475_update_device(dev);985 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);986 int idx;987 988 if (IS_ERR(data))989 return PTR_ERR(data);990 idx = clamp_val(data->range[sattr->index] & 0xf, 0,991 ARRAY_SIZE(pwmfreq_table) - 1);992 993 return sprintf(buf, "%d\n", pwmfreq_table[idx]);994}995 996static ssize_t pwmfreq_store(struct device *dev,997 struct device_attribute *attr, const char *buf,998 size_t count)999{1000 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);1001 struct adt7475_data *data = dev_get_drvdata(dev);1002 struct i2c_client *client = data->client;1003 int out;1004 long val;1005 1006 if (kstrtol(buf, 10, &val))1007 return -EINVAL;1008 1009 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));1010 1011 mutex_lock(&data->lock);1012 1013 data->range[sattr->index] =1014 adt7475_read(TEMP_TRANGE_REG(sattr->index));1015 data->range[sattr->index] &= ~0xf;1016 data->range[sattr->index] |= out;1017 1018 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),1019 data->range[sattr->index]);1020 1021 mutex_unlock(&data->lock);1022 return count;1023}1024 1025static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,1026 struct device_attribute *devattr,1027 char *buf)1028{1029 struct adt7475_data *data = adt7475_update_device(dev);1030 1031 if (IS_ERR(data))1032 return PTR_ERR(data);1033 1034 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));1035}1036 1037static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,1038 struct device_attribute *devattr,1039 const char *buf, size_t count)1040{1041 struct adt7475_data *data = dev_get_drvdata(dev);1042 struct i2c_client *client = data->client;1043 long val;1044 1045 if (kstrtol(buf, 10, &val))1046 return -EINVAL;1047 if (val != 0 && val != 1)1048 return -EINVAL;1049 1050 mutex_lock(&data->lock);1051 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);1052 if (val)1053 data->config4 |= CONFIG4_MAXDUTY;1054 else1055 data->config4 &= ~CONFIG4_MAXDUTY;1056 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);1057 mutex_unlock(&data->lock);1058 1059 return count;1060}1061 1062static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,1063 char *buf)1064{1065 struct adt7475_data *data = dev_get_drvdata(dev);1066 return sprintf(buf, "%d\n", (int)data->vrm);1067}1068 1069static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,1070 const char *buf, size_t count)1071{1072 struct adt7475_data *data = dev_get_drvdata(dev);1073 long val;1074 1075 if (kstrtol(buf, 10, &val))1076 return -EINVAL;1077 if (val < 0 || val > 255)1078 return -EINVAL;1079 data->vrm = val;1080 1081 return count;1082}1083 1084static ssize_t cpu0_vid_show(struct device *dev,1085 struct device_attribute *devattr, char *buf)1086{1087 struct adt7475_data *data = adt7475_update_device(dev);1088 1089 if (IS_ERR(data))1090 return PTR_ERR(data);1091 1092 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));1093}1094 1095static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);1096static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);1097static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);1098static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);1099static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);1100static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);1101static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);1102static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);1103static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);1104static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);1105static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);1106static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);1107static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);1108static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);1109static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);1110static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);1111static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);1112static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);1113static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);1114static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);1115static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);1116static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);1117static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);1118static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);1119static SENSOR_DEVICE_ATTR_2_RO(in6_input, voltage, INPUT, 6);1120static SENSOR_DEVICE_ATTR_2_RW(in6_max, voltage, MAX, 6);1121static SENSOR_DEVICE_ATTR_2_RW(in6_min, voltage, MIN, 6);1122static SENSOR_DEVICE_ATTR_2_RO(in6_alarm, voltage, ALARM, 30);1123static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);1124static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);1125static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);1126static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);1127static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);1128static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);1129static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);1130static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);1131static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);1132static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);1133static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);1134static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);1135static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);1136static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);1137static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);1138static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);1139static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);1140static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);1141static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);1142static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);1143static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);1144static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);1145static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);1146static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);1147static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);1148static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);1149static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);1150static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);1151static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);1152static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);1153static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);1154static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);1155static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);1156static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);1157static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);1158static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);1159static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);1160static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);1161static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);1162static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);1163static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);1164static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);1165static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);1166static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);1167static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);1168static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);1169static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);1170static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);1171static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);1172static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);1173static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);1174static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);1175static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);1176static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);1177static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);1178static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);1179static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);1180static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);1181static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);1182static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);1183static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);1184static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);1185static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);1186static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);1187static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);1188 1189/* Non-standard name, might need revisiting */1190static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);1191 1192static DEVICE_ATTR_RW(vrm);1193static DEVICE_ATTR_RO(cpu0_vid);1194 1195static struct attribute *adt7475_attrs[] = {1196 &sensor_dev_attr_in1_input.dev_attr.attr,1197 &sensor_dev_attr_in1_max.dev_attr.attr,1198 &sensor_dev_attr_in1_min.dev_attr.attr,1199 &sensor_dev_attr_in1_alarm.dev_attr.attr,1200 &sensor_dev_attr_in2_input.dev_attr.attr,1201 &sensor_dev_attr_in2_max.dev_attr.attr,1202 &sensor_dev_attr_in2_min.dev_attr.attr,1203 &sensor_dev_attr_in2_alarm.dev_attr.attr,1204 &sensor_dev_attr_temp1_input.dev_attr.attr,1205 &sensor_dev_attr_temp1_alarm.dev_attr.attr,1206 &sensor_dev_attr_temp1_fault.dev_attr.attr,1207 &sensor_dev_attr_temp1_max.dev_attr.attr,1208 &sensor_dev_attr_temp1_min.dev_attr.attr,1209 &sensor_dev_attr_temp1_offset.dev_attr.attr,1210 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,1211 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,1212 &sensor_dev_attr_temp1_crit.dev_attr.attr,1213 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,1214 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,1215 &sensor_dev_attr_temp2_input.dev_attr.attr,1216 &sensor_dev_attr_temp2_alarm.dev_attr.attr,1217 &sensor_dev_attr_temp2_max.dev_attr.attr,1218 &sensor_dev_attr_temp2_min.dev_attr.attr,1219 &sensor_dev_attr_temp2_offset.dev_attr.attr,1220 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,1221 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,1222 &sensor_dev_attr_temp2_crit.dev_attr.attr,1223 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,1224 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,1225 &sensor_dev_attr_temp3_input.dev_attr.attr,1226 &sensor_dev_attr_temp3_fault.dev_attr.attr,1227 &sensor_dev_attr_temp3_alarm.dev_attr.attr,1228 &sensor_dev_attr_temp3_max.dev_attr.attr,1229 &sensor_dev_attr_temp3_min.dev_attr.attr,1230 &sensor_dev_attr_temp3_offset.dev_attr.attr,1231 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,1232 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,1233 &sensor_dev_attr_temp3_crit.dev_attr.attr,1234 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,1235 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,1236 &sensor_dev_attr_fan1_input.dev_attr.attr,1237 &sensor_dev_attr_fan1_min.dev_attr.attr,1238 &sensor_dev_attr_fan1_alarm.dev_attr.attr,1239 &sensor_dev_attr_fan2_input.dev_attr.attr,1240 &sensor_dev_attr_fan2_min.dev_attr.attr,1241 &sensor_dev_attr_fan2_alarm.dev_attr.attr,1242 &sensor_dev_attr_fan3_input.dev_attr.attr,1243 &sensor_dev_attr_fan3_min.dev_attr.attr,1244 &sensor_dev_attr_fan3_alarm.dev_attr.attr,1245 &sensor_dev_attr_pwm1.dev_attr.attr,1246 &sensor_dev_attr_pwm1_freq.dev_attr.attr,1247 &sensor_dev_attr_pwm1_enable.dev_attr.attr,1248 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,1249 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,1250 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,1251 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,1252 &sensor_dev_attr_pwm3.dev_attr.attr,1253 &sensor_dev_attr_pwm3_freq.dev_attr.attr,1254 &sensor_dev_attr_pwm3_enable.dev_attr.attr,1255 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,1256 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,1257 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,1258 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,1259 &dev_attr_pwm_use_point2_pwm_at_crit.attr,1260 NULL,1261};1262 1263static struct attribute *fan4_attrs[] = {1264 &sensor_dev_attr_fan4_input.dev_attr.attr,1265 &sensor_dev_attr_fan4_min.dev_attr.attr,1266 &sensor_dev_attr_fan4_alarm.dev_attr.attr,1267 NULL1268};1269 1270static struct attribute *pwm2_attrs[] = {1271 &sensor_dev_attr_pwm2.dev_attr.attr,1272 &sensor_dev_attr_pwm2_freq.dev_attr.attr,1273 &sensor_dev_attr_pwm2_enable.dev_attr.attr,1274 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,1275 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,1276 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,1277 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,1278 NULL1279};1280 1281static struct attribute *in0_attrs[] = {1282 &sensor_dev_attr_in0_input.dev_attr.attr,1283 &sensor_dev_attr_in0_max.dev_attr.attr,1284 &sensor_dev_attr_in0_min.dev_attr.attr,1285 &sensor_dev_attr_in0_alarm.dev_attr.attr,1286 NULL1287};1288 1289static struct attribute *in3_attrs[] = {1290 &sensor_dev_attr_in3_input.dev_attr.attr,1291 &sensor_dev_attr_in3_max.dev_attr.attr,1292 &sensor_dev_attr_in3_min.dev_attr.attr,1293 &sensor_dev_attr_in3_alarm.dev_attr.attr,1294 NULL1295};1296 1297static struct attribute *in4_attrs[] = {1298 &sensor_dev_attr_in4_input.dev_attr.attr,1299 &sensor_dev_attr_in4_max.dev_attr.attr,1300 &sensor_dev_attr_in4_min.dev_attr.attr,1301 &sensor_dev_attr_in4_alarm.dev_attr.attr,1302 NULL1303};1304 1305static struct attribute *in5_attrs[] = {1306 &sensor_dev_attr_in5_input.dev_attr.attr,1307 &sensor_dev_attr_in5_max.dev_attr.attr,1308 &sensor_dev_attr_in5_min.dev_attr.attr,1309 &sensor_dev_attr_in5_alarm.dev_attr.attr,1310 NULL1311};1312 1313static struct attribute *in6_attrs[] = {1314 &sensor_dev_attr_in6_input.dev_attr.attr,1315 &sensor_dev_attr_in6_max.dev_attr.attr,1316 &sensor_dev_attr_in6_min.dev_attr.attr,1317 &sensor_dev_attr_in6_alarm.dev_attr.attr,1318 NULL1319};1320 1321static struct attribute *vid_attrs[] = {1322 &dev_attr_cpu0_vid.attr,1323 &dev_attr_vrm.attr,1324 NULL1325};1326 1327static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };1328static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };1329static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };1330static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };1331static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };1332static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };1333static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };1334static const struct attribute_group in6_attr_group = { .attrs = in6_attrs };1335static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };1336 1337static int adt7475_detect(struct i2c_client *client,1338 struct i2c_board_info *info)1339{1340 struct i2c_adapter *adapter = client->adapter;1341 int vendid, devid, devid2;1342 const char *name;1343 1344 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))1345 return -ENODEV;1346 1347 vendid = adt7475_read(REG_VENDID);1348 devid2 = adt7475_read(REG_DEVID2);1349 if (vendid != 0x41 || /* Analog Devices */1350 (devid2 & 0xf8) != 0x68)1351 return -ENODEV;1352 1353 devid = adt7475_read(REG_DEVID);1354 if (devid == 0x73)1355 name = "adt7473";1356 else if (devid == 0x75 && client->addr == 0x2e)1357 name = "adt7475";1358 else if (devid == 0x76)1359 name = "adt7476";1360 else if ((devid2 & 0xfc) == 0x6c)1361 name = "adt7490";1362 else {1363 dev_dbg(&adapter->dev,1364 "Couldn't detect an ADT7473/75/76/90 part at "1365 "0x%02x\n", (unsigned int)client->addr);1366 return -ENODEV;1367 }1368 1369 strscpy(info->type, name, I2C_NAME_SIZE);1370 1371 return 0;1372}1373 1374static int adt7475_update_limits(struct i2c_client *client)1375{1376 struct adt7475_data *data = i2c_get_clientdata(client);1377 int i;1378 int ret;1379 1380 ret = adt7475_read(REG_CONFIG4);1381 if (ret < 0)1382 return ret;1383 data->config4 = ret;1384 1385 ret = adt7475_read(REG_CONFIG5);1386 if (ret < 0)1387 return ret;1388 data->config5 = ret;1389 1390 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {1391 if (!(data->has_voltage & (1 << i)))1392 continue;1393 /* Adjust values so they match the input precision */1394 ret = adt7475_read(VOLTAGE_MIN_REG(i));1395 if (ret < 0)1396 return ret;1397 data->voltage[MIN][i] = ret << 2;1398 1399 ret = adt7475_read(VOLTAGE_MAX_REG(i));1400 if (ret < 0)1401 return ret;1402 data->voltage[MAX][i] = ret << 2;1403 }1404 1405 if (data->has_voltage & (1 << 5)) {1406 ret = adt7475_read(REG_VTT_MIN);1407 if (ret < 0)1408 return ret;1409 data->voltage[MIN][5] = ret << 2;1410 1411 ret = adt7475_read(REG_VTT_MAX);1412 if (ret < 0)1413 return ret;1414 data->voltage[MAX][5] = ret << 2;1415 }1416 1417 if (data->has_voltage & (1 << 6)) {1418 ret = adt7475_read(REG_IMON_MIN);1419 if (ret < 0)1420 return ret;1421 data->voltage[MIN][6] = ret << 2;1422 1423 ret = adt7475_read(REG_IMON_MAX);1424 if (ret < 0)1425 return ret;1426 data->voltage[MAX][6] = ret << 2;1427 }1428 1429 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {1430 /* Adjust values so they match the input precision */1431 ret = adt7475_read(TEMP_MIN_REG(i));1432 if (ret < 0)1433 return ret;1434 data->temp[MIN][i] = ret << 2;1435 1436 ret = adt7475_read(TEMP_MAX_REG(i));1437 if (ret < 0)1438 return ret;1439 data->temp[MAX][i] = ret << 2;1440 1441 ret = adt7475_read(TEMP_TMIN_REG(i));1442 if (ret < 0)1443 return ret;1444 data->temp[AUTOMIN][i] = ret << 2;1445 1446 ret = adt7475_read(TEMP_THERM_REG(i));1447 if (ret < 0)1448 return ret;1449 data->temp[THERM][i] = ret << 2;1450 1451 ret = adt7475_read(TEMP_OFFSET_REG(i));1452 if (ret < 0)1453 return ret;1454 data->temp[OFFSET][i] = ret;1455 }1456 adt7475_read_hystersis(client);1457 1458 for (i = 0; i < ADT7475_TACH_COUNT; i++) {1459 if (i == 3 && !data->has_fan4)1460 continue;1461 ret = adt7475_read_word(client, TACH_MIN_REG(i));1462 if (ret < 0)1463 return ret;1464 data->tach[MIN][i] = ret;1465 }1466 1467 for (i = 0; i < ADT7475_PWM_COUNT; i++) {1468 if (i == 1 && !data->has_pwm2)1469 continue;1470 ret = adt7475_read(PWM_MAX_REG(i));1471 if (ret < 0)1472 return ret;1473 data->pwm[MAX][i] = ret;1474 1475 ret = adt7475_read(PWM_MIN_REG(i));1476 if (ret < 0)1477 return ret;1478 data->pwm[MIN][i] = ret;1479 /* Set the channel and control information */1480 adt7475_read_pwm(client, i);1481 }1482 1483 ret = adt7475_read(TEMP_TRANGE_REG(0));1484 if (ret < 0)1485 return ret;1486 data->range[0] = ret;1487 1488 ret = adt7475_read(TEMP_TRANGE_REG(1));1489 if (ret < 0)1490 return ret;1491 data->range[1] = ret;1492 1493 ret = adt7475_read(TEMP_TRANGE_REG(2));1494 if (ret < 0)1495 return ret;1496 data->range[2] = ret;1497 1498 return 0;1499}1500 1501static int load_config3(const struct i2c_client *client, const char *propname)1502{1503 const char *function;1504 u8 config3;1505 int ret;1506 1507 ret = device_property_read_string(&client->dev, propname, &function);1508 if (!ret) {1509 ret = adt7475_read(REG_CONFIG3);1510 if (ret < 0)1511 return ret;1512 1513 config3 = ret & ~CONFIG3_SMBALERT;1514 if (!strcmp("pwm2", function))1515 ;1516 else if (!strcmp("smbalert#", function))1517 config3 |= CONFIG3_SMBALERT;1518 else1519 return -EINVAL;1520 1521 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);1522 }1523 1524 return 0;1525}1526 1527static int load_config4(const struct i2c_client *client, const char *propname)1528{1529 const char *function;1530 u8 config4;1531 int ret;1532 1533 ret = device_property_read_string(&client->dev, propname, &function);1534 if (!ret) {1535 ret = adt7475_read(REG_CONFIG4);1536 if (ret < 0)1537 return ret;1538 1539 config4 = ret & ~CONFIG4_PINFUNC;1540 1541 if (!strcmp("tach4", function))1542 ;1543 else if (!strcmp("therm#", function))1544 config4 |= CONFIG4_THERM;1545 else if (!strcmp("smbalert#", function))1546 config4 |= CONFIG4_SMBALERT;1547 else if (!strcmp("gpio", function))1548 config4 |= CONFIG4_PINFUNC;1549 else1550 return -EINVAL;1551 1552 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4);1553 }1554 1555 return 0;1556}1557 1558static int load_config(const struct i2c_client *client, enum chips chip)1559{1560 int err;1561 const char *prop1, *prop2;1562 1563 switch (chip) {1564 case adt7473:1565 case adt7475:1566 prop1 = "adi,pin5-function";1567 prop2 = "adi,pin9-function";1568 break;1569 case adt7476:1570 case adt7490:1571 prop1 = "adi,pin10-function";1572 prop2 = "adi,pin14-function";1573 break;1574 }1575 1576 err = load_config3(client, prop1);1577 if (err) {1578 dev_err(&client->dev, "failed to configure %s\n", prop1);1579 return err;1580 }1581 1582 err = load_config4(client, prop2);1583 if (err) {1584 dev_err(&client->dev, "failed to configure %s\n", prop2);1585 return err;1586 }1587 1588 return 0;1589}1590 1591static int set_property_bit(const struct i2c_client *client, char *property,1592 u8 *config, u8 bit_index)1593{1594 u32 prop_value = 0;1595 int ret = device_property_read_u32(&client->dev, property,1596 &prop_value);1597 1598 if (!ret) {1599 if (prop_value)1600 *config |= (1 << bit_index);1601 else1602 *config &= ~(1 << bit_index);1603 }1604 1605 return ret;1606}1607 1608static int load_attenuators(const struct i2c_client *client, enum chips chip,1609 struct adt7475_data *data)1610{1611 switch (chip) {1612 case adt7476:1613 case adt7490:1614 set_property_bit(client, "adi,bypass-attenuator-in0",1615 &data->config4, 4);1616 set_property_bit(client, "adi,bypass-attenuator-in1",1617 &data->config4, 5);1618 set_property_bit(client, "adi,bypass-attenuator-in3",1619 &data->config4, 6);1620 set_property_bit(client, "adi,bypass-attenuator-in4",1621 &data->config4, 7);1622 1623 return i2c_smbus_write_byte_data(client, REG_CONFIG4,1624 data->config4);1625 case adt7473:1626 case adt7475:1627 set_property_bit(client, "adi,bypass-attenuator-in1",1628 &data->config2, 5);1629 1630 return i2c_smbus_write_byte_data(client, REG_CONFIG2,1631 data->config2);1632 }1633 1634 return 0;1635}1636 1637static int adt7475_set_pwm_polarity(struct i2c_client *client)1638{1639 u32 states[ADT7475_PWM_COUNT];1640 int ret, i;1641 u8 val;1642 1643 ret = device_property_read_u32_array(&client->dev,1644 "adi,pwm-active-state", states,1645 ARRAY_SIZE(states));1646 if (ret)1647 return ret;1648 1649 for (i = 0; i < ADT7475_PWM_COUNT; i++) {1650 ret = adt7475_read(PWM_CONFIG_REG(i));1651 if (ret < 0)1652 return ret;1653 val = ret;1654 if (states[i])1655 val &= ~BIT(4);1656 else1657 val |= BIT(4);1658 1659 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val);1660 if (ret)1661 return ret;1662 }1663 1664 return 0;1665}1666 1667struct adt7475_pwm_config {1668 int index;1669 int freq;1670 int flags;1671 int duty;1672};1673 1674static int _adt7475_pwm_properties_parse_args(u32 args[4], struct adt7475_pwm_config *cfg)1675{1676 int freq_hz;1677 int duty;1678 1679 if (args[1] == 0)1680 return -EINVAL;1681 1682 freq_hz = 1000000000UL / args[1];1683 if (args[3] >= args[1])1684 duty = 255;1685 else1686 duty = div_u64(255ULL * args[3], args[1]);1687 1688 cfg->index = args[0];1689 cfg->freq = find_closest(freq_hz, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));1690 cfg->flags = args[2];1691 cfg->duty = duty;1692 1693 return 0;1694}1695 1696static int adt7475_pwm_properties_parse_reference_args(struct fwnode_handle *fwnode,1697 struct adt7475_pwm_config *cfg)1698{1699 int ret, i;1700 struct fwnode_reference_args rargs = {};1701 u32 args[4] = {};1702 1703 ret = fwnode_property_get_reference_args(fwnode, "pwms", "#pwm-cells", 0, 0, &rargs);1704 if (ret)1705 return ret;1706 1707 if (rargs.nargs != 4) {1708 fwnode_handle_put(rargs.fwnode);1709 return -EINVAL;1710 }1711 1712 for (i = 0; i < 4; i++)1713 args[i] = rargs.args[i];1714 1715 ret = _adt7475_pwm_properties_parse_args(args, cfg);1716 1717 fwnode_handle_put(rargs.fwnode);1718 1719 return ret;1720}1721 1722static int adt7475_pwm_properties_parse_args(struct fwnode_handle *fwnode,1723 struct adt7475_pwm_config *cfg)1724{1725 int ret;1726 u32 args[4] = {};1727 1728 ret = fwnode_property_read_u32_array(fwnode, "pwms", args, ARRAY_SIZE(args));1729 if (ret)1730 return ret;1731 1732 return _adt7475_pwm_properties_parse_args(args, cfg);1733}1734 1735static int adt7475_fan_pwm_config(struct i2c_client *client)1736{1737 struct adt7475_data *data = i2c_get_clientdata(client);1738 struct adt7475_pwm_config cfg = {};1739 int ret;1740 1741 device_for_each_child_node_scoped(&client->dev, child) {1742 if (!fwnode_property_present(child, "pwms"))1743 continue;1744 1745 if (is_of_node(child))1746 ret = adt7475_pwm_properties_parse_reference_args(child, &cfg);1747 else1748 ret = adt7475_pwm_properties_parse_args(child, &cfg);1749 1750 if (cfg.index >= ADT7475_PWM_COUNT)1751 return -EINVAL;1752 1753 ret = adt7475_read(PWM_CONFIG_REG(cfg.index));1754 if (ret < 0)1755 return ret;1756 data->pwm[CONTROL][cfg.index] = ret;1757 if (cfg.flags & PWM_POLARITY_INVERTED)1758 data->pwm[CONTROL][cfg.index] |= BIT(4);1759 else1760 data->pwm[CONTROL][cfg.index] &= ~BIT(4);1761 1762 /* Force to manual mode so PWM values take effect */1763 data->pwm[CONTROL][cfg.index] &= ~0xE0;1764 data->pwm[CONTROL][cfg.index] |= 0x07 << 5;1765 1766 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(cfg.index),1767 data->pwm[CONTROL][cfg.index]);1768 if (ret)1769 return ret;1770 1771 data->pwm[INPUT][cfg.index] = cfg.duty;1772 ret = i2c_smbus_write_byte_data(client, PWM_REG(cfg.index),1773 data->pwm[INPUT][cfg.index]);1774 if (ret)1775 return ret;1776 1777 data->range[cfg.index] = adt7475_read(TEMP_TRANGE_REG(cfg.index));1778 data->range[cfg.index] &= ~0xf;1779 data->range[cfg.index] |= cfg.freq;1780 1781 ret = i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(cfg.index),1782 data->range[cfg.index]);1783 if (ret)1784 return ret;1785 }1786 1787 return 0;1788}1789 1790static int adt7475_probe(struct i2c_client *client)1791{1792 enum chips chip;1793 static const char * const names[] = {1794 [adt7473] = "ADT7473",1795 [adt7475] = "ADT7475",1796 [adt7476] = "ADT7476",1797 [adt7490] = "ADT7490",1798 };1799 1800 struct adt7475_data *data;1801 struct device *hwmon_dev;1802 int i, ret = 0, revision, group_num = 0;1803 u8 config3;1804 1805 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);1806 if (data == NULL)1807 return -ENOMEM;1808 1809 mutex_init(&data->lock);1810 data->client = client;1811 i2c_set_clientdata(client, data);1812 1813 chip = (uintptr_t)i2c_get_match_data(client);1814 1815 /* Initialize device-specific values */1816 switch (chip) {1817 case adt7476:1818 data->has_voltage = 0x0e; /* in1 to in3 */1819 revision = adt7475_read(REG_DEVID2) & 0x07;1820 break;1821 case adt7490:1822 data->has_voltage = 0x7e; /* in1 to in6 */1823 revision = adt7475_read(REG_DEVID2) & 0x03;1824 if (revision == 0x03)1825 revision += adt7475_read(REG_DEVREV2);1826 break;1827 default:1828 data->has_voltage = 0x06; /* in1, in2 */1829 revision = adt7475_read(REG_DEVID2) & 0x07;1830 }1831 1832 ret = load_config(client, chip);1833 if (ret)1834 return ret;1835 1836 config3 = adt7475_read(REG_CONFIG3);1837 /* Pin PWM2 may alternatively be used for ALERT output */1838 if (!(config3 & CONFIG3_SMBALERT))1839 data->has_pwm2 = 1;1840 /* Meaning of this bit is inverted for the ADT7473-1 */1841 if (chip == adt7473 && revision >= 1)1842 data->has_pwm2 = !data->has_pwm2;1843 1844 data->config4 = adt7475_read(REG_CONFIG4);1845 /* Pin TACH4 may alternatively be used for THERM */1846 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)1847 data->has_fan4 = 1;1848 1849 /*1850 * THERM configuration is more complex on the ADT7476 and ADT7490,1851 * because 2 different pins (TACH4 and +2.5 Vin) can be used for1852 * this function1853 */1854 if (chip == adt7490) {1855 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&1856 !(config3 & CONFIG3_THERM))1857 data->has_fan4 = 1;1858 }1859 if (chip == adt7476 || chip == adt7490) {1860 if (!(config3 & CONFIG3_THERM) ||1861 (data->config4 & CONFIG4_PINFUNC) == 0x1)1862 data->has_voltage |= (1 << 0); /* in0 */1863 }1864 1865 /*1866 * On the ADT7476, the +12V input pin may instead be used as VID5,1867 * and VID pins may alternatively be used as GPIO1868 */1869 if (chip == adt7476) {1870 u8 vid = adt7475_read(REG_VID);1871 if (!(vid & VID_VIDSEL))1872 data->has_voltage |= (1 << 4); /* in4 */1873 1874 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);1875 }1876 1877 /* Voltage attenuators can be bypassed, globally or individually */1878 data->config2 = adt7475_read(REG_CONFIG2);1879 ret = load_attenuators(client, chip, data);1880 if (ret)1881 dev_warn(&client->dev, "Error configuring attenuator bypass\n");1882 1883 if (data->config2 & CONFIG2_ATTN) {1884 data->bypass_attn = (0x3 << 3) | 0x3;1885 } else {1886 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |1887 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);1888 }1889 data->bypass_attn &= data->has_voltage;1890 1891 /*1892 * Call adt7475_read_pwm for all pwm's as this will reprogram any1893 * pwm's which are disabled to manual mode with 0% duty cycle1894 */1895 for (i = 0; i < ADT7475_PWM_COUNT; i++)1896 adt7475_read_pwm(client, i);1897 1898 ret = adt7475_set_pwm_polarity(client);1899 if (ret && ret != -EINVAL)1900 dev_warn(&client->dev, "Error configuring pwm polarity\n");1901 1902 ret = adt7475_fan_pwm_config(client);1903 if (ret)1904 dev_warn(&client->dev, "Error %d configuring fan/pwm\n", ret);1905 1906 /* Start monitoring */1907 switch (chip) {1908 case adt7475:1909 case adt7476:1910 i2c_smbus_write_byte_data(client, REG_CONFIG1,1911 adt7475_read(REG_CONFIG1) | 0x01);1912 break;1913 default:1914 break;1915 }1916 1917 data->groups[group_num++] = &adt7475_attr_group;1918 1919 /* Features that can be disabled individually */1920 if (data->has_fan4) {1921 data->groups[group_num++] = &fan4_attr_group;1922 }1923 if (data->has_pwm2) {1924 data->groups[group_num++] = &pwm2_attr_group;1925 }1926 if (data->has_voltage & (1 << 0)) {1927 data->groups[group_num++] = &in0_attr_group;1928 }1929 if (data->has_voltage & (1 << 3)) {1930 data->groups[group_num++] = &in3_attr_group;1931 }1932 if (data->has_voltage & (1 << 4)) {1933 data->groups[group_num++] = &in4_attr_group;1934 }1935 if (data->has_voltage & (1 << 5)) {1936 data->groups[group_num++] = &in5_attr_group;1937 }1938 if (data->has_voltage & (1 << 6)) {1939 data->groups[group_num++] = &in6_attr_group;1940 }1941 if (data->has_vid) {1942 data->vrm = vid_which_vrm();1943 data->groups[group_num] = &vid_attr_group;1944 }1945 1946 /* register device with all the acquired attributes */1947 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,1948 client->name, data,1949 data->groups);1950 1951 if (IS_ERR(hwmon_dev)) {1952 ret = PTR_ERR(hwmon_dev);1953 return ret;1954 }1955 1956 dev_info(&client->dev, "%s device, revision %d\n",1957 names[chip], revision);1958 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)1959 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",1960 (data->has_voltage & (1 << 0)) ? " in0" : "",1961 (data->has_voltage & (1 << 4)) ? " in4" : "",1962 data->has_fan4 ? " fan4" : "",1963 data->has_pwm2 ? " pwm2" : "",1964 data->has_vid ? " vid" : "");1965 if (data->bypass_attn)1966 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",1967 (data->bypass_attn & (1 << 0)) ? " in0" : "",1968 (data->bypass_attn & (1 << 1)) ? " in1" : "",1969 (data->bypass_attn & (1 << 3)) ? " in3" : "",1970 (data->bypass_attn & (1 << 4)) ? " in4" : "");1971 1972 /* Limits and settings, should never change update more than once */1973 ret = adt7475_update_limits(client);1974 if (ret)1975 return ret;1976 1977 return 0;1978}1979 1980static struct i2c_driver adt7475_driver = {1981 .class = I2C_CLASS_HWMON,1982 .driver = {1983 .name = "adt7475",1984 .of_match_table = of_match_ptr(adt7475_of_match),1985 },1986 .probe = adt7475_probe,1987 .id_table = adt7475_id,1988 .detect = adt7475_detect,1989 .address_list = normal_i2c,1990};1991 1992static void adt7475_read_hystersis(struct i2c_client *client)1993{1994 struct adt7475_data *data = i2c_get_clientdata(client);1995 1996 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);1997 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];1998 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);1999}2000 2001static void adt7475_read_pwm(struct i2c_client *client, int index)2002{2003 struct adt7475_data *data = i2c_get_clientdata(client);2004 unsigned int v;2005 2006 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));2007 2008 /*2009 * Figure out the internal value for pwmctrl and pwmchan2010 * based on the current settings2011 */2012 v = (data->pwm[CONTROL][index] >> 5) & 7;2013 2014 if (v == 3)2015 data->pwmctl[index] = 0;2016 else if (v == 7)2017 data->pwmctl[index] = 1;2018 else if (v == 4) {2019 /*2020 * The fan is disabled - we don't want to2021 * support that, so change to manual mode and2022 * set the duty cycle to 0 instead2023 */2024 data->pwm[INPUT][index] = 0;2025 data->pwm[CONTROL][index] &= ~0xE0;2026 data->pwm[CONTROL][index] |= (7 << 5);2027 2028 i2c_smbus_write_byte_data(client, PWM_REG(index),2029 data->pwm[INPUT][index]);2030 2031 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),2032 data->pwm[CONTROL][index]);2033 2034 data->pwmctl[index] = 1;2035 } else {2036 data->pwmctl[index] = 2;2037 2038 switch (v) {2039 case 0:2040 data->pwmchan[index] = 1;2041 break;2042 case 1:2043 data->pwmchan[index] = 2;2044 break;2045 case 2:2046 data->pwmchan[index] = 4;2047 break;2048 case 5:2049 data->pwmchan[index] = 6;2050 break;2051 case 6:2052 data->pwmchan[index] = 7;2053 break;2054 }2055 }2056}2057 2058static int adt7475_update_measure(struct device *dev)2059{2060 struct adt7475_data *data = dev_get_drvdata(dev);2061 struct i2c_client *client = data->client;2062 u16 ext;2063 int i;2064 int ret;2065 2066 ret = adt7475_read(REG_STATUS2);2067 if (ret < 0)2068 return ret;2069 data->alarms = ret << 8;2070 2071 ret = adt7475_read(REG_STATUS1);2072 if (ret < 0)2073 return ret;2074 data->alarms |= ret;2075 2076 ret = adt7475_read(REG_EXTEND2);2077 if (ret < 0)2078 return ret;2079 2080 ext = (ret << 8);2081 2082 ret = adt7475_read(REG_EXTEND1);2083 if (ret < 0)2084 return ret;2085 2086 ext |= ret;2087 2088 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {2089 if (!(data->has_voltage & (1 << i)))2090 continue;2091 ret = adt7475_read(VOLTAGE_REG(i));2092 if (ret < 0)2093 return ret;2094 data->voltage[INPUT][i] =2095 (ret << 2) |2096 ((ext >> (i * 2)) & 3);2097 }2098 2099 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {2100 ret = adt7475_read(TEMP_REG(i));2101 if (ret < 0)2102 return ret;2103 data->temp[INPUT][i] =2104 (ret << 2) |2105 ((ext >> ((i + 5) * 2)) & 3);2106 }2107 2108 if (data->has_voltage & (1 << 5)) {2109 ret = adt7475_read(REG_STATUS4);2110 if (ret < 0)2111 return ret;2112 data->alarms |= ret << 24;2113 2114 ret = adt7475_read(REG_EXTEND3);2115 if (ret < 0)2116 return ret;2117 ext = ret;2118 2119 ret = adt7475_read(REG_VTT);2120 if (ret < 0)2121 return ret;2122 data->voltage[INPUT][5] = ret << 2 |2123 ((ext >> 4) & 3);2124 }2125 2126 if (data->has_voltage & (1 << 6)) {2127 ret = adt7475_read(REG_STATUS4);2128 if (ret < 0)2129 return ret;2130 data->alarms |= ret << 24;2131 2132 ret = adt7475_read(REG_EXTEND3);2133 if (ret < 0)2134 return ret;2135 ext = ret;2136 2137 ret = adt7475_read(REG_IMON);2138 if (ret < 0)2139 return ret;2140 data->voltage[INPUT][6] = ret << 2 |2141 ((ext >> 6) & 3);2142 }2143 2144 for (i = 0; i < ADT7475_TACH_COUNT; i++) {2145 if (i == 3 && !data->has_fan4)2146 continue;2147 ret = adt7475_read_word(client, TACH_REG(i));2148 if (ret < 0)2149 return ret;2150 data->tach[INPUT][i] = ret;2151 }2152 2153 /* Updated by hw when in auto mode */2154 for (i = 0; i < ADT7475_PWM_COUNT; i++) {2155 if (i == 1 && !data->has_pwm2)2156 continue;2157 ret = adt7475_read(PWM_REG(i));2158 if (ret < 0)2159 return ret;2160 data->pwm[INPUT][i] = ret;2161 }2162 2163 if (data->has_vid) {2164 ret = adt7475_read(REG_VID);2165 if (ret < 0)2166 return ret;2167 data->vid = ret & 0x3f;2168 }2169 2170 return 0;2171}2172 2173static struct adt7475_data *adt7475_update_device(struct device *dev)2174{2175 struct adt7475_data *data = dev_get_drvdata(dev);2176 int ret;2177 2178 mutex_lock(&data->lock);2179 2180 /* Measurement values update every 2 seconds */2181 if (time_after(jiffies, data->measure_updated + HZ * 2) ||2182 !data->valid) {2183 ret = adt7475_update_measure(dev);2184 if (ret) {2185 data->valid = false;2186 mutex_unlock(&data->lock);2187 return ERR_PTR(ret);2188 }2189 data->measure_updated = jiffies;2190 data->valid = true;2191 }2192 2193 mutex_unlock(&data->lock);2194 2195 return data;2196}2197 2198module_i2c_driver(adt7475_driver);2199 2200MODULE_AUTHOR("Advanced Micro Devices, Inc");2201MODULE_DESCRIPTION("adt7475 driver");2202MODULE_LICENSE("GPL");2203