1 /* 2 lm85.c - Part of lm_sensors, Linux kernel modules for hardware 3 monitoring 4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> 5 Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com> 6 Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de> 7 Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com> 8 Copyright (C) 2007, 2008 Jean Delvare <khali@linux-fr.org> 9 10 Chip details at <http://www.national.com/ds/LM/LM85.pdf> 11 12 This program is free software; you can redistribute it and/or modify 13 it under the terms of the GNU General Public License as published by 14 the Free Software Foundation; either version 2 of the License, or 15 (at your option) any later version. 16 17 This program is distributed in the hope that it will be useful, 18 but WITHOUT ANY WARRANTY; without even the implied warranty of 19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 GNU General Public License for more details. 21 22 You should have received a copy of the GNU General Public License 23 along with this program; if not, write to the Free Software 24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 25 */ 26 27 #include <linux/module.h> 28 #include <linux/init.h> 29 #include <linux/slab.h> 30 #include <linux/jiffies.h> 31 #include <linux/i2c.h> 32 #include <linux/hwmon.h> 33 #include <linux/hwmon-vid.h> 34 #include <linux/hwmon-sysfs.h> 35 #include <linux/err.h> 36 #include <linux/mutex.h> 37 38 /* Addresses to scan */ 39 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 40 41 /* Insmod parameters */ 42 I2C_CLIENT_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102); 43 44 /* The LM85 registers */ 45 46 #define LM85_REG_IN(nr) (0x20 + (nr)) 47 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2) 48 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2) 49 50 #define LM85_REG_TEMP(nr) (0x25 + (nr)) 51 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2) 52 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2) 53 54 /* Fan speeds are LSB, MSB (2 bytes) */ 55 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2) 56 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2) 57 58 #define LM85_REG_PWM(nr) (0x30 + (nr)) 59 60 #define LM85_REG_COMPANY 0x3e 61 #define LM85_REG_VERSTEP 0x3f 62 /* These are the recognized values for the above regs */ 63 #define LM85_COMPANY_NATIONAL 0x01 64 #define LM85_COMPANY_ANALOG_DEV 0x41 65 #define LM85_COMPANY_SMSC 0x5c 66 #define LM85_VERSTEP_VMASK 0xf0 67 #define LM85_VERSTEP_GENERIC 0x60 68 #define LM85_VERSTEP_LM85C 0x60 69 #define LM85_VERSTEP_LM85B 0x62 70 #define LM85_VERSTEP_ADM1027 0x60 71 #define LM85_VERSTEP_ADT7463 0x62 72 #define LM85_VERSTEP_ADT7463C 0x6A 73 #define LM85_VERSTEP_EMC6D100_A0 0x60 74 #define LM85_VERSTEP_EMC6D100_A1 0x61 75 #define LM85_VERSTEP_EMC6D102 0x65 76 77 #define LM85_REG_CONFIG 0x40 78 79 #define LM85_REG_ALARM1 0x41 80 #define LM85_REG_ALARM2 0x42 81 82 #define LM85_REG_VID 0x43 83 84 /* Automated FAN control */ 85 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr)) 86 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr)) 87 #define LM85_REG_AFAN_SPIKE1 0x62 88 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr)) 89 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr)) 90 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr)) 91 #define LM85_REG_AFAN_HYST1 0x6d 92 #define LM85_REG_AFAN_HYST2 0x6e 93 94 #define ADM1027_REG_EXTEND_ADC1 0x76 95 #define ADM1027_REG_EXTEND_ADC2 0x77 96 97 #define EMC6D100_REG_ALARM3 0x7d 98 /* IN5, IN6 and IN7 */ 99 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5)) 100 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2) 101 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2) 102 #define EMC6D102_REG_EXTEND_ADC1 0x85 103 #define EMC6D102_REG_EXTEND_ADC2 0x86 104 #define EMC6D102_REG_EXTEND_ADC3 0x87 105 #define EMC6D102_REG_EXTEND_ADC4 0x88 106 107 108 /* Conversions. Rounding and limit checking is only done on the TO_REG 109 variants. Note that you should be a bit careful with which arguments 110 these macros are called: arguments may be evaluated more than once. 111 */ 112 113 /* IN are scaled acording to built-in resistors */ 114 static const int lm85_scaling[] = { /* .001 Volts */ 115 2500, 2250, 3300, 5000, 12000, 116 3300, 1500, 1800 /*EMC6D100*/ 117 }; 118 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from)) 119 120 #define INS_TO_REG(n, val) \ 121 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255) 122 123 #define INSEXT_FROM_REG(n, val, ext) \ 124 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n]) 125 126 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n]) 127 128 /* FAN speed is measured using 90kHz clock */ 129 static inline u16 FAN_TO_REG(unsigned long val) 130 { 131 if (!val) 132 return 0xffff; 133 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe); 134 } 135 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \ 136 5400000 / (val)) 137 138 /* Temperature is reported in .001 degC increments */ 139 #define TEMP_TO_REG(val) \ 140 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127) 141 #define TEMPEXT_FROM_REG(val, ext) \ 142 SCALE(((val) << 4) + (ext), 16, 1000) 143 #define TEMP_FROM_REG(val) ((val) * 1000) 144 145 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255) 146 #define PWM_FROM_REG(val) (val) 147 148 149 /* ZONEs have the following parameters: 150 * Limit (low) temp, 1. degC 151 * Hysteresis (below limit), 1. degC (0-15) 152 * Range of speed control, .1 degC (2-80) 153 * Critical (high) temp, 1. degC 154 * 155 * FAN PWMs have the following parameters: 156 * Reference Zone, 1, 2, 3, etc. 157 * Spinup time, .05 sec 158 * PWM value at limit/low temp, 1 count 159 * PWM Frequency, 1. Hz 160 * PWM is Min or OFF below limit, flag 161 * Invert PWM output, flag 162 * 163 * Some chips filter the temp, others the fan. 164 * Filter constant (or disabled) .1 seconds 165 */ 166 167 /* These are the zone temperature range encodings in .001 degree C */ 168 static const int lm85_range_map[] = { 169 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000, 170 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000 171 }; 172 173 static int RANGE_TO_REG(int range) 174 { 175 int i; 176 177 /* Find the closest match */ 178 for (i = 0; i < 15; ++i) { 179 if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2) 180 break; 181 } 182 183 return i; 184 } 185 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f] 186 187 /* These are the PWM frequency encodings */ 188 static const int lm85_freq_map[8] = { /* 1 Hz */ 189 10, 15, 23, 30, 38, 47, 61, 94 190 }; 191 static const int adm1027_freq_map[8] = { /* 1 Hz */ 192 11, 15, 22, 29, 35, 44, 59, 88 193 }; 194 195 static int FREQ_TO_REG(const int *map, int freq) 196 { 197 int i; 198 199 /* Find the closest match */ 200 for (i = 0; i < 7; ++i) 201 if (freq <= (map[i] + map[i + 1]) / 2) 202 break; 203 return i; 204 } 205 206 static int FREQ_FROM_REG(const int *map, u8 reg) 207 { 208 return map[reg & 0x07]; 209 } 210 211 /* Since we can't use strings, I'm abusing these numbers 212 * to stand in for the following meanings: 213 * 1 -- PWM responds to Zone 1 214 * 2 -- PWM responds to Zone 2 215 * 3 -- PWM responds to Zone 3 216 * 23 -- PWM responds to the higher temp of Zone 2 or 3 217 * 123 -- PWM responds to highest of Zone 1, 2, or 3 218 * 0 -- PWM is always at 0% (ie, off) 219 * -1 -- PWM is always at 100% 220 * -2 -- PWM responds to manual control 221 */ 222 223 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 }; 224 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5] 225 226 static int ZONE_TO_REG(int zone) 227 { 228 int i; 229 230 for (i = 0; i <= 7; ++i) 231 if (zone == lm85_zone_map[i]) 232 break; 233 if (i > 7) /* Not found. */ 234 i = 3; /* Always 100% */ 235 return i << 5; 236 } 237 238 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15) 239 #define HYST_FROM_REG(val) ((val) * 1000) 240 241 /* Chip sampling rates 242 * 243 * Some sensors are not updated more frequently than once per second 244 * so it doesn't make sense to read them more often than that. 245 * We cache the results and return the saved data if the driver 246 * is called again before a second has elapsed. 247 * 248 * Also, there is significant configuration data for this chip 249 * given the automatic PWM fan control that is possible. There 250 * are about 47 bytes of config data to only 22 bytes of actual 251 * readings. So, we keep the config data up to date in the cache 252 * when it is written and only sample it once every 1 *minute* 253 */ 254 #define LM85_DATA_INTERVAL (HZ + HZ / 2) 255 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ) 256 257 /* LM85 can automatically adjust fan speeds based on temperature 258 * This structure encapsulates an entire Zone config. There are 259 * three zones (one for each temperature input) on the lm85 260 */ 261 struct lm85_zone { 262 s8 limit; /* Low temp limit */ 263 u8 hyst; /* Low limit hysteresis. (0-15) */ 264 u8 range; /* Temp range, encoded */ 265 s8 critical; /* "All fans ON" temp limit */ 266 u8 off_desired; /* Actual "off" temperature specified. Preserved 267 * to prevent "drift" as other autofan control 268 * values change. 269 */ 270 u8 max_desired; /* Actual "max" temperature specified. Preserved 271 * to prevent "drift" as other autofan control 272 * values change. 273 */ 274 }; 275 276 struct lm85_autofan { 277 u8 config; /* Register value */ 278 u8 min_pwm; /* Minimum PWM value, encoded */ 279 u8 min_off; /* Min PWM or OFF below "limit", flag */ 280 }; 281 282 /* For each registered chip, we need to keep some data in memory. 283 The structure is dynamically allocated. */ 284 struct lm85_data { 285 struct device *hwmon_dev; 286 const int *freq_map; 287 enum chips type; 288 289 struct mutex update_lock; 290 int valid; /* !=0 if following fields are valid */ 291 unsigned long last_reading; /* In jiffies */ 292 unsigned long last_config; /* In jiffies */ 293 294 u8 in[8]; /* Register value */ 295 u8 in_max[8]; /* Register value */ 296 u8 in_min[8]; /* Register value */ 297 s8 temp[3]; /* Register value */ 298 s8 temp_min[3]; /* Register value */ 299 s8 temp_max[3]; /* Register value */ 300 u16 fan[4]; /* Register value */ 301 u16 fan_min[4]; /* Register value */ 302 u8 pwm[3]; /* Register value */ 303 u8 pwm_freq[3]; /* Register encoding */ 304 u8 temp_ext[3]; /* Decoded values */ 305 u8 in_ext[8]; /* Decoded values */ 306 u8 vid; /* Register value */ 307 u8 vrm; /* VRM version */ 308 u32 alarms; /* Register encoding, combined */ 309 struct lm85_autofan autofan[3]; 310 struct lm85_zone zone[3]; 311 }; 312 313 static int lm85_detect(struct i2c_client *client, int kind, 314 struct i2c_board_info *info); 315 static int lm85_probe(struct i2c_client *client, 316 const struct i2c_device_id *id); 317 static int lm85_remove(struct i2c_client *client); 318 319 static int lm85_read_value(struct i2c_client *client, u8 reg); 320 static void lm85_write_value(struct i2c_client *client, u8 reg, int value); 321 static struct lm85_data *lm85_update_device(struct device *dev); 322 323 324 static const struct i2c_device_id lm85_id[] = { 325 { "adm1027", adm1027 }, 326 { "adt7463", adt7463 }, 327 { "lm85", any_chip }, 328 { "lm85b", lm85b }, 329 { "lm85c", lm85c }, 330 { "emc6d100", emc6d100 }, 331 { "emc6d101", emc6d100 }, 332 { "emc6d102", emc6d102 }, 333 { } 334 }; 335 MODULE_DEVICE_TABLE(i2c, lm85_id); 336 337 static struct i2c_driver lm85_driver = { 338 .class = I2C_CLASS_HWMON, 339 .driver = { 340 .name = "lm85", 341 }, 342 .probe = lm85_probe, 343 .remove = lm85_remove, 344 .id_table = lm85_id, 345 .detect = lm85_detect, 346 .address_data = &addr_data, 347 }; 348 349 350 /* 4 Fans */ 351 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 352 char *buf) 353 { 354 int nr = to_sensor_dev_attr(attr)->index; 355 struct lm85_data *data = lm85_update_device(dev); 356 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr])); 357 } 358 359 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, 360 char *buf) 361 { 362 int nr = to_sensor_dev_attr(attr)->index; 363 struct lm85_data *data = lm85_update_device(dev); 364 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr])); 365 } 366 367 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 368 const char *buf, size_t count) 369 { 370 int nr = to_sensor_dev_attr(attr)->index; 371 struct i2c_client *client = to_i2c_client(dev); 372 struct lm85_data *data = i2c_get_clientdata(client); 373 unsigned long val = simple_strtoul(buf, NULL, 10); 374 375 mutex_lock(&data->update_lock); 376 data->fan_min[nr] = FAN_TO_REG(val); 377 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); 378 mutex_unlock(&data->update_lock); 379 return count; 380 } 381 382 #define show_fan_offset(offset) \ 383 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 384 show_fan, NULL, offset - 1); \ 385 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 386 show_fan_min, set_fan_min, offset - 1) 387 388 show_fan_offset(1); 389 show_fan_offset(2); 390 show_fan_offset(3); 391 show_fan_offset(4); 392 393 /* vid, vrm, alarms */ 394 395 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, 396 char *buf) 397 { 398 struct lm85_data *data = lm85_update_device(dev); 399 int vid; 400 401 if (data->type == adt7463 && (data->vid & 0x80)) { 402 /* 6-pin VID (VRM 10) */ 403 vid = vid_from_reg(data->vid & 0x3f, data->vrm); 404 } else { 405 /* 5-pin VID (VRM 9) */ 406 vid = vid_from_reg(data->vid & 0x1f, data->vrm); 407 } 408 409 return sprintf(buf, "%d\n", vid); 410 } 411 412 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 413 414 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, 415 char *buf) 416 { 417 struct lm85_data *data = dev_get_drvdata(dev); 418 return sprintf(buf, "%ld\n", (long) data->vrm); 419 } 420 421 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, 422 const char *buf, size_t count) 423 { 424 struct lm85_data *data = dev_get_drvdata(dev); 425 data->vrm = simple_strtoul(buf, NULL, 10); 426 return count; 427 } 428 429 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 430 431 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute 432 *attr, char *buf) 433 { 434 struct lm85_data *data = lm85_update_device(dev); 435 return sprintf(buf, "%u\n", data->alarms); 436 } 437 438 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 439 440 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 441 char *buf) 442 { 443 int nr = to_sensor_dev_attr(attr)->index; 444 struct lm85_data *data = lm85_update_device(dev); 445 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); 446 } 447 448 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 449 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 450 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 451 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 452 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 453 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18); 454 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16); 455 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17); 456 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 457 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14); 458 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 459 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6); 460 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 461 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10); 462 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11); 463 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12); 464 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13); 465 466 /* pwm */ 467 468 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 469 char *buf) 470 { 471 int nr = to_sensor_dev_attr(attr)->index; 472 struct lm85_data *data = lm85_update_device(dev); 473 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr])); 474 } 475 476 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 477 const char *buf, size_t count) 478 { 479 int nr = to_sensor_dev_attr(attr)->index; 480 struct i2c_client *client = to_i2c_client(dev); 481 struct lm85_data *data = i2c_get_clientdata(client); 482 long val = simple_strtol(buf, NULL, 10); 483 484 mutex_lock(&data->update_lock); 485 data->pwm[nr] = PWM_TO_REG(val); 486 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 487 mutex_unlock(&data->update_lock); 488 return count; 489 } 490 491 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute 492 *attr, char *buf) 493 { 494 int nr = to_sensor_dev_attr(attr)->index; 495 struct lm85_data *data = lm85_update_device(dev); 496 int pwm_zone, enable; 497 498 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 499 switch (pwm_zone) { 500 case -1: /* PWM is always at 100% */ 501 enable = 0; 502 break; 503 case 0: /* PWM is always at 0% */ 504 case -2: /* PWM responds to manual control */ 505 enable = 1; 506 break; 507 default: /* PWM in automatic mode */ 508 enable = 2; 509 } 510 return sprintf(buf, "%d\n", enable); 511 } 512 513 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute 514 *attr, const char *buf, size_t count) 515 { 516 int nr = to_sensor_dev_attr(attr)->index; 517 struct i2c_client *client = to_i2c_client(dev); 518 struct lm85_data *data = i2c_get_clientdata(client); 519 long val = simple_strtol(buf, NULL, 10); 520 u8 config; 521 522 switch (val) { 523 case 0: 524 config = 3; 525 break; 526 case 1: 527 config = 7; 528 break; 529 case 2: 530 /* Here we have to choose arbitrarily one of the 5 possible 531 configurations; I go for the safest */ 532 config = 6; 533 break; 534 default: 535 return -EINVAL; 536 } 537 538 mutex_lock(&data->update_lock); 539 data->autofan[nr].config = lm85_read_value(client, 540 LM85_REG_AFAN_CONFIG(nr)); 541 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0) 542 | (config << 5); 543 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 544 data->autofan[nr].config); 545 mutex_unlock(&data->update_lock); 546 return count; 547 } 548 549 static ssize_t show_pwm_freq(struct device *dev, 550 struct device_attribute *attr, char *buf) 551 { 552 int nr = to_sensor_dev_attr(attr)->index; 553 struct lm85_data *data = lm85_update_device(dev); 554 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->freq_map, 555 data->pwm_freq[nr])); 556 } 557 558 static ssize_t set_pwm_freq(struct device *dev, 559 struct device_attribute *attr, const char *buf, size_t count) 560 { 561 int nr = to_sensor_dev_attr(attr)->index; 562 struct i2c_client *client = to_i2c_client(dev); 563 struct lm85_data *data = i2c_get_clientdata(client); 564 long val = simple_strtol(buf, NULL, 10); 565 566 mutex_lock(&data->update_lock); 567 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val); 568 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 569 (data->zone[nr].range << 4) 570 | data->pwm_freq[nr]); 571 mutex_unlock(&data->update_lock); 572 return count; 573 } 574 575 #define show_pwm_reg(offset) \ 576 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 577 show_pwm, set_pwm, offset - 1); \ 578 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ 579 show_pwm_enable, set_pwm_enable, offset - 1); \ 580 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \ 581 show_pwm_freq, set_pwm_freq, offset - 1) 582 583 show_pwm_reg(1); 584 show_pwm_reg(2); 585 show_pwm_reg(3); 586 587 /* Voltages */ 588 589 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 590 char *buf) 591 { 592 int nr = to_sensor_dev_attr(attr)->index; 593 struct lm85_data *data = lm85_update_device(dev); 594 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr], 595 data->in_ext[nr])); 596 } 597 598 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 599 char *buf) 600 { 601 int nr = to_sensor_dev_attr(attr)->index; 602 struct lm85_data *data = lm85_update_device(dev); 603 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr])); 604 } 605 606 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 607 const char *buf, size_t count) 608 { 609 int nr = to_sensor_dev_attr(attr)->index; 610 struct i2c_client *client = to_i2c_client(dev); 611 struct lm85_data *data = i2c_get_clientdata(client); 612 long val = simple_strtol(buf, NULL, 10); 613 614 mutex_lock(&data->update_lock); 615 data->in_min[nr] = INS_TO_REG(nr, val); 616 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 617 mutex_unlock(&data->update_lock); 618 return count; 619 } 620 621 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 622 char *buf) 623 { 624 int nr = to_sensor_dev_attr(attr)->index; 625 struct lm85_data *data = lm85_update_device(dev); 626 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr])); 627 } 628 629 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 630 const char *buf, size_t count) 631 { 632 int nr = to_sensor_dev_attr(attr)->index; 633 struct i2c_client *client = to_i2c_client(dev); 634 struct lm85_data *data = i2c_get_clientdata(client); 635 long val = simple_strtol(buf, NULL, 10); 636 637 mutex_lock(&data->update_lock); 638 data->in_max[nr] = INS_TO_REG(nr, val); 639 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 640 mutex_unlock(&data->update_lock); 641 return count; 642 } 643 644 #define show_in_reg(offset) \ 645 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 646 show_in, NULL, offset); \ 647 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 648 show_in_min, set_in_min, offset); \ 649 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 650 show_in_max, set_in_max, offset) 651 652 show_in_reg(0); 653 show_in_reg(1); 654 show_in_reg(2); 655 show_in_reg(3); 656 show_in_reg(4); 657 show_in_reg(5); 658 show_in_reg(6); 659 show_in_reg(7); 660 661 /* Temps */ 662 663 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 664 char *buf) 665 { 666 int nr = to_sensor_dev_attr(attr)->index; 667 struct lm85_data *data = lm85_update_device(dev); 668 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr], 669 data->temp_ext[nr])); 670 } 671 672 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, 673 char *buf) 674 { 675 int nr = to_sensor_dev_attr(attr)->index; 676 struct lm85_data *data = lm85_update_device(dev); 677 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); 678 } 679 680 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, 681 const char *buf, size_t count) 682 { 683 int nr = to_sensor_dev_attr(attr)->index; 684 struct i2c_client *client = to_i2c_client(dev); 685 struct lm85_data *data = i2c_get_clientdata(client); 686 long val = simple_strtol(buf, NULL, 10); 687 688 mutex_lock(&data->update_lock); 689 data->temp_min[nr] = TEMP_TO_REG(val); 690 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 691 mutex_unlock(&data->update_lock); 692 return count; 693 } 694 695 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 696 char *buf) 697 { 698 int nr = to_sensor_dev_attr(attr)->index; 699 struct lm85_data *data = lm85_update_device(dev); 700 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); 701 } 702 703 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 704 const char *buf, size_t count) 705 { 706 int nr = to_sensor_dev_attr(attr)->index; 707 struct i2c_client *client = to_i2c_client(dev); 708 struct lm85_data *data = i2c_get_clientdata(client); 709 long val = simple_strtol(buf, NULL, 10); 710 711 mutex_lock(&data->update_lock); 712 data->temp_max[nr] = TEMP_TO_REG(val); 713 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 714 mutex_unlock(&data->update_lock); 715 return count; 716 } 717 718 #define show_temp_reg(offset) \ 719 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 720 show_temp, NULL, offset - 1); \ 721 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 722 show_temp_min, set_temp_min, offset - 1); \ 723 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 724 show_temp_max, set_temp_max, offset - 1); 725 726 show_temp_reg(1); 727 show_temp_reg(2); 728 show_temp_reg(3); 729 730 731 /* Automatic PWM control */ 732 733 static ssize_t show_pwm_auto_channels(struct device *dev, 734 struct device_attribute *attr, char *buf) 735 { 736 int nr = to_sensor_dev_attr(attr)->index; 737 struct lm85_data *data = lm85_update_device(dev); 738 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config)); 739 } 740 741 static ssize_t set_pwm_auto_channels(struct device *dev, 742 struct device_attribute *attr, const char *buf, size_t count) 743 { 744 int nr = to_sensor_dev_attr(attr)->index; 745 struct i2c_client *client = to_i2c_client(dev); 746 struct lm85_data *data = i2c_get_clientdata(client); 747 long val = simple_strtol(buf, NULL, 10); 748 749 mutex_lock(&data->update_lock); 750 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 751 | ZONE_TO_REG(val); 752 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 753 data->autofan[nr].config); 754 mutex_unlock(&data->update_lock); 755 return count; 756 } 757 758 static ssize_t show_pwm_auto_pwm_min(struct device *dev, 759 struct device_attribute *attr, char *buf) 760 { 761 int nr = to_sensor_dev_attr(attr)->index; 762 struct lm85_data *data = lm85_update_device(dev); 763 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 764 } 765 766 static ssize_t set_pwm_auto_pwm_min(struct device *dev, 767 struct device_attribute *attr, const char *buf, size_t count) 768 { 769 int nr = to_sensor_dev_attr(attr)->index; 770 struct i2c_client *client = to_i2c_client(dev); 771 struct lm85_data *data = i2c_get_clientdata(client); 772 long val = simple_strtol(buf, NULL, 10); 773 774 mutex_lock(&data->update_lock); 775 data->autofan[nr].min_pwm = PWM_TO_REG(val); 776 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), 777 data->autofan[nr].min_pwm); 778 mutex_unlock(&data->update_lock); 779 return count; 780 } 781 782 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, 783 struct device_attribute *attr, char *buf) 784 { 785 int nr = to_sensor_dev_attr(attr)->index; 786 struct lm85_data *data = lm85_update_device(dev); 787 return sprintf(buf, "%d\n", data->autofan[nr].min_off); 788 } 789 790 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, 791 struct device_attribute *attr, const char *buf, size_t count) 792 { 793 int nr = to_sensor_dev_attr(attr)->index; 794 struct i2c_client *client = to_i2c_client(dev); 795 struct lm85_data *data = i2c_get_clientdata(client); 796 long val = simple_strtol(buf, NULL, 10); 797 u8 tmp; 798 799 mutex_lock(&data->update_lock); 800 data->autofan[nr].min_off = val; 801 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 802 tmp &= ~(0x20 << nr); 803 if (data->autofan[nr].min_off) 804 tmp |= 0x20 << nr; 805 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp); 806 mutex_unlock(&data->update_lock); 807 return count; 808 } 809 810 #define pwm_auto(offset) \ 811 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \ 812 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \ 813 set_pwm_auto_channels, offset - 1); \ 814 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \ 815 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \ 816 set_pwm_auto_pwm_min, offset - 1); \ 817 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \ 818 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \ 819 set_pwm_auto_pwm_minctl, offset - 1) 820 821 pwm_auto(1); 822 pwm_auto(2); 823 pwm_auto(3); 824 825 /* Temperature settings for automatic PWM control */ 826 827 static ssize_t show_temp_auto_temp_off(struct device *dev, 828 struct device_attribute *attr, char *buf) 829 { 830 int nr = to_sensor_dev_attr(attr)->index; 831 struct lm85_data *data = lm85_update_device(dev); 832 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 833 HYST_FROM_REG(data->zone[nr].hyst)); 834 } 835 836 static ssize_t set_temp_auto_temp_off(struct device *dev, 837 struct device_attribute *attr, const char *buf, size_t count) 838 { 839 int nr = to_sensor_dev_attr(attr)->index; 840 struct i2c_client *client = to_i2c_client(dev); 841 struct lm85_data *data = i2c_get_clientdata(client); 842 int min; 843 long val = simple_strtol(buf, NULL, 10); 844 845 mutex_lock(&data->update_lock); 846 min = TEMP_FROM_REG(data->zone[nr].limit); 847 data->zone[nr].off_desired = TEMP_TO_REG(val); 848 data->zone[nr].hyst = HYST_TO_REG(min - val); 849 if (nr == 0 || nr == 1) { 850 lm85_write_value(client, LM85_REG_AFAN_HYST1, 851 (data->zone[0].hyst << 4) 852 | data->zone[1].hyst); 853 } else { 854 lm85_write_value(client, LM85_REG_AFAN_HYST2, 855 (data->zone[2].hyst << 4)); 856 } 857 mutex_unlock(&data->update_lock); 858 return count; 859 } 860 861 static ssize_t show_temp_auto_temp_min(struct device *dev, 862 struct device_attribute *attr, char *buf) 863 { 864 int nr = to_sensor_dev_attr(attr)->index; 865 struct lm85_data *data = lm85_update_device(dev); 866 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit)); 867 } 868 869 static ssize_t set_temp_auto_temp_min(struct device *dev, 870 struct device_attribute *attr, const char *buf, size_t count) 871 { 872 int nr = to_sensor_dev_attr(attr)->index; 873 struct i2c_client *client = to_i2c_client(dev); 874 struct lm85_data *data = i2c_get_clientdata(client); 875 long val = simple_strtol(buf, NULL, 10); 876 877 mutex_lock(&data->update_lock); 878 data->zone[nr].limit = TEMP_TO_REG(val); 879 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 880 data->zone[nr].limit); 881 882 /* Update temp_auto_max and temp_auto_range */ 883 data->zone[nr].range = RANGE_TO_REG( 884 TEMP_FROM_REG(data->zone[nr].max_desired) - 885 TEMP_FROM_REG(data->zone[nr].limit)); 886 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 887 ((data->zone[nr].range & 0x0f) << 4) 888 | (data->pwm_freq[nr] & 0x07)); 889 890 /* Update temp_auto_hyst and temp_auto_off */ 891 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 892 data->zone[nr].limit) - TEMP_FROM_REG( 893 data->zone[nr].off_desired)); 894 if (nr == 0 || nr == 1) { 895 lm85_write_value(client, LM85_REG_AFAN_HYST1, 896 (data->zone[0].hyst << 4) 897 | data->zone[1].hyst); 898 } else { 899 lm85_write_value(client, LM85_REG_AFAN_HYST2, 900 (data->zone[2].hyst << 4)); 901 } 902 mutex_unlock(&data->update_lock); 903 return count; 904 } 905 906 static ssize_t show_temp_auto_temp_max(struct device *dev, 907 struct device_attribute *attr, char *buf) 908 { 909 int nr = to_sensor_dev_attr(attr)->index; 910 struct lm85_data *data = lm85_update_device(dev); 911 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 912 RANGE_FROM_REG(data->zone[nr].range)); 913 } 914 915 static ssize_t set_temp_auto_temp_max(struct device *dev, 916 struct device_attribute *attr, const char *buf, size_t count) 917 { 918 int nr = to_sensor_dev_attr(attr)->index; 919 struct i2c_client *client = to_i2c_client(dev); 920 struct lm85_data *data = i2c_get_clientdata(client); 921 int min; 922 long val = simple_strtol(buf, NULL, 10); 923 924 mutex_lock(&data->update_lock); 925 min = TEMP_FROM_REG(data->zone[nr].limit); 926 data->zone[nr].max_desired = TEMP_TO_REG(val); 927 data->zone[nr].range = RANGE_TO_REG( 928 val - min); 929 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 930 ((data->zone[nr].range & 0x0f) << 4) 931 | (data->pwm_freq[nr] & 0x07)); 932 mutex_unlock(&data->update_lock); 933 return count; 934 } 935 936 static ssize_t show_temp_auto_temp_crit(struct device *dev, 937 struct device_attribute *attr, char *buf) 938 { 939 int nr = to_sensor_dev_attr(attr)->index; 940 struct lm85_data *data = lm85_update_device(dev); 941 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 942 } 943 944 static ssize_t set_temp_auto_temp_crit(struct device *dev, 945 struct device_attribute *attr, const char *buf, size_t count) 946 { 947 int nr = to_sensor_dev_attr(attr)->index; 948 struct i2c_client *client = to_i2c_client(dev); 949 struct lm85_data *data = i2c_get_clientdata(client); 950 long val = simple_strtol(buf, NULL, 10); 951 952 mutex_lock(&data->update_lock); 953 data->zone[nr].critical = TEMP_TO_REG(val); 954 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 955 data->zone[nr].critical); 956 mutex_unlock(&data->update_lock); 957 return count; 958 } 959 960 #define temp_auto(offset) \ 961 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \ 962 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \ 963 set_temp_auto_temp_off, offset - 1); \ 964 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \ 965 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \ 966 set_temp_auto_temp_min, offset - 1); \ 967 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \ 968 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \ 969 set_temp_auto_temp_max, offset - 1); \ 970 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \ 971 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \ 972 set_temp_auto_temp_crit, offset - 1); 973 974 temp_auto(1); 975 temp_auto(2); 976 temp_auto(3); 977 978 static struct attribute *lm85_attributes[] = { 979 &sensor_dev_attr_fan1_input.dev_attr.attr, 980 &sensor_dev_attr_fan2_input.dev_attr.attr, 981 &sensor_dev_attr_fan3_input.dev_attr.attr, 982 &sensor_dev_attr_fan4_input.dev_attr.attr, 983 &sensor_dev_attr_fan1_min.dev_attr.attr, 984 &sensor_dev_attr_fan2_min.dev_attr.attr, 985 &sensor_dev_attr_fan3_min.dev_attr.attr, 986 &sensor_dev_attr_fan4_min.dev_attr.attr, 987 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 988 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 989 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 990 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 991 992 &sensor_dev_attr_pwm1.dev_attr.attr, 993 &sensor_dev_attr_pwm2.dev_attr.attr, 994 &sensor_dev_attr_pwm3.dev_attr.attr, 995 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 996 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 997 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 998 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 999 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1000 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1001 1002 &sensor_dev_attr_in0_input.dev_attr.attr, 1003 &sensor_dev_attr_in1_input.dev_attr.attr, 1004 &sensor_dev_attr_in2_input.dev_attr.attr, 1005 &sensor_dev_attr_in3_input.dev_attr.attr, 1006 &sensor_dev_attr_in0_min.dev_attr.attr, 1007 &sensor_dev_attr_in1_min.dev_attr.attr, 1008 &sensor_dev_attr_in2_min.dev_attr.attr, 1009 &sensor_dev_attr_in3_min.dev_attr.attr, 1010 &sensor_dev_attr_in0_max.dev_attr.attr, 1011 &sensor_dev_attr_in1_max.dev_attr.attr, 1012 &sensor_dev_attr_in2_max.dev_attr.attr, 1013 &sensor_dev_attr_in3_max.dev_attr.attr, 1014 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1015 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1016 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1017 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1018 1019 &sensor_dev_attr_temp1_input.dev_attr.attr, 1020 &sensor_dev_attr_temp2_input.dev_attr.attr, 1021 &sensor_dev_attr_temp3_input.dev_attr.attr, 1022 &sensor_dev_attr_temp1_min.dev_attr.attr, 1023 &sensor_dev_attr_temp2_min.dev_attr.attr, 1024 &sensor_dev_attr_temp3_min.dev_attr.attr, 1025 &sensor_dev_attr_temp1_max.dev_attr.attr, 1026 &sensor_dev_attr_temp2_max.dev_attr.attr, 1027 &sensor_dev_attr_temp3_max.dev_attr.attr, 1028 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1029 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1030 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1031 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1032 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1033 1034 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr, 1035 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr, 1036 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr, 1037 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr, 1038 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr, 1039 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr, 1040 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr, 1041 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr, 1042 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr, 1043 1044 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr, 1045 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr, 1046 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr, 1047 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr, 1048 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr, 1049 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr, 1050 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr, 1051 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr, 1052 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr, 1053 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr, 1054 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr, 1055 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr, 1056 1057 &dev_attr_vrm.attr, 1058 &dev_attr_cpu0_vid.attr, 1059 &dev_attr_alarms.attr, 1060 NULL 1061 }; 1062 1063 static const struct attribute_group lm85_group = { 1064 .attrs = lm85_attributes, 1065 }; 1066 1067 static struct attribute *lm85_attributes_in4[] = { 1068 &sensor_dev_attr_in4_input.dev_attr.attr, 1069 &sensor_dev_attr_in4_min.dev_attr.attr, 1070 &sensor_dev_attr_in4_max.dev_attr.attr, 1071 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1072 NULL 1073 }; 1074 1075 static const struct attribute_group lm85_group_in4 = { 1076 .attrs = lm85_attributes_in4, 1077 }; 1078 1079 static struct attribute *lm85_attributes_in567[] = { 1080 &sensor_dev_attr_in5_input.dev_attr.attr, 1081 &sensor_dev_attr_in6_input.dev_attr.attr, 1082 &sensor_dev_attr_in7_input.dev_attr.attr, 1083 &sensor_dev_attr_in5_min.dev_attr.attr, 1084 &sensor_dev_attr_in6_min.dev_attr.attr, 1085 &sensor_dev_attr_in7_min.dev_attr.attr, 1086 &sensor_dev_attr_in5_max.dev_attr.attr, 1087 &sensor_dev_attr_in6_max.dev_attr.attr, 1088 &sensor_dev_attr_in7_max.dev_attr.attr, 1089 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1090 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1091 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1092 NULL 1093 }; 1094 1095 static const struct attribute_group lm85_group_in567 = { 1096 .attrs = lm85_attributes_in567, 1097 }; 1098 1099 static void lm85_init_client(struct i2c_client *client) 1100 { 1101 int value; 1102 1103 /* Start monitoring if needed */ 1104 value = lm85_read_value(client, LM85_REG_CONFIG); 1105 if (!(value & 0x01)) { 1106 dev_info(&client->dev, "Starting monitoring\n"); 1107 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01); 1108 } 1109 1110 /* Warn about unusual configuration bits */ 1111 if (value & 0x02) 1112 dev_warn(&client->dev, "Device configuration is locked\n"); 1113 if (!(value & 0x04)) 1114 dev_warn(&client->dev, "Device is not ready\n"); 1115 } 1116 1117 /* Return 0 if detection is successful, -ENODEV otherwise */ 1118 static int lm85_detect(struct i2c_client *client, int kind, 1119 struct i2c_board_info *info) 1120 { 1121 struct i2c_adapter *adapter = client->adapter; 1122 int address = client->addr; 1123 const char *type_name; 1124 1125 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { 1126 /* We need to be able to do byte I/O */ 1127 return -ENODEV; 1128 } 1129 1130 /* If auto-detecting, determine the chip type */ 1131 if (kind < 0) { 1132 int company = lm85_read_value(client, LM85_REG_COMPANY); 1133 int verstep = lm85_read_value(client, LM85_REG_VERSTEP); 1134 1135 dev_dbg(&adapter->dev, "Detecting device at 0x%02x with " 1136 "COMPANY: 0x%02x and VERSTEP: 0x%02x\n", 1137 address, company, verstep); 1138 1139 /* All supported chips have the version in common */ 1140 if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC) { 1141 dev_dbg(&adapter->dev, "Autodetection failed: " 1142 "unsupported version\n"); 1143 return -ENODEV; 1144 } 1145 kind = any_chip; 1146 1147 /* Now, refine the detection */ 1148 if (company == LM85_COMPANY_NATIONAL) { 1149 switch (verstep) { 1150 case LM85_VERSTEP_LM85C: 1151 kind = lm85c; 1152 break; 1153 case LM85_VERSTEP_LM85B: 1154 kind = lm85b; 1155 break; 1156 } 1157 } else if (company == LM85_COMPANY_ANALOG_DEV) { 1158 switch (verstep) { 1159 case LM85_VERSTEP_ADM1027: 1160 kind = adm1027; 1161 break; 1162 case LM85_VERSTEP_ADT7463: 1163 case LM85_VERSTEP_ADT7463C: 1164 kind = adt7463; 1165 break; 1166 } 1167 } else if (company == LM85_COMPANY_SMSC) { 1168 switch (verstep) { 1169 case LM85_VERSTEP_EMC6D100_A0: 1170 case LM85_VERSTEP_EMC6D100_A1: 1171 /* Note: we can't tell a '100 from a '101 */ 1172 kind = emc6d100; 1173 break; 1174 case LM85_VERSTEP_EMC6D102: 1175 kind = emc6d102; 1176 break; 1177 } 1178 } else { 1179 dev_dbg(&adapter->dev, "Autodetection failed: " 1180 "unknown vendor\n"); 1181 return -ENODEV; 1182 } 1183 } 1184 1185 switch (kind) { 1186 case lm85b: 1187 type_name = "lm85b"; 1188 break; 1189 case lm85c: 1190 type_name = "lm85c"; 1191 break; 1192 case adm1027: 1193 type_name = "adm1027"; 1194 break; 1195 case adt7463: 1196 type_name = "adt7463"; 1197 break; 1198 case emc6d100: 1199 type_name = "emc6d100"; 1200 break; 1201 case emc6d102: 1202 type_name = "emc6d102"; 1203 break; 1204 default: 1205 type_name = "lm85"; 1206 } 1207 strlcpy(info->type, type_name, I2C_NAME_SIZE); 1208 1209 return 0; 1210 } 1211 1212 static int lm85_probe(struct i2c_client *client, 1213 const struct i2c_device_id *id) 1214 { 1215 struct lm85_data *data; 1216 int err; 1217 1218 data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL); 1219 if (!data) 1220 return -ENOMEM; 1221 1222 i2c_set_clientdata(client, data); 1223 data->type = id->driver_data; 1224 mutex_init(&data->update_lock); 1225 1226 /* Fill in the chip specific driver values */ 1227 switch (data->type) { 1228 case adm1027: 1229 case adt7463: 1230 case emc6d100: 1231 case emc6d102: 1232 data->freq_map = adm1027_freq_map; 1233 break; 1234 default: 1235 data->freq_map = lm85_freq_map; 1236 } 1237 1238 /* Set the VRM version */ 1239 data->vrm = vid_which_vrm(); 1240 1241 /* Initialize the LM85 chip */ 1242 lm85_init_client(client); 1243 1244 /* Register sysfs hooks */ 1245 err = sysfs_create_group(&client->dev.kobj, &lm85_group); 1246 if (err) 1247 goto err_kfree; 1248 1249 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used 1250 as a sixth digital VID input rather than an analog input. */ 1251 data->vid = lm85_read_value(client, LM85_REG_VID); 1252 if (!(data->type == adt7463 && (data->vid & 0x80))) 1253 if ((err = sysfs_create_group(&client->dev.kobj, 1254 &lm85_group_in4))) 1255 goto err_remove_files; 1256 1257 /* The EMC6D100 has 3 additional voltage inputs */ 1258 if (data->type == emc6d100) 1259 if ((err = sysfs_create_group(&client->dev.kobj, 1260 &lm85_group_in567))) 1261 goto err_remove_files; 1262 1263 data->hwmon_dev = hwmon_device_register(&client->dev); 1264 if (IS_ERR(data->hwmon_dev)) { 1265 err = PTR_ERR(data->hwmon_dev); 1266 goto err_remove_files; 1267 } 1268 1269 return 0; 1270 1271 /* Error out and cleanup code */ 1272 err_remove_files: 1273 sysfs_remove_group(&client->dev.kobj, &lm85_group); 1274 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); 1275 if (data->type == emc6d100) 1276 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); 1277 err_kfree: 1278 kfree(data); 1279 return err; 1280 } 1281 1282 static int lm85_remove(struct i2c_client *client) 1283 { 1284 struct lm85_data *data = i2c_get_clientdata(client); 1285 hwmon_device_unregister(data->hwmon_dev); 1286 sysfs_remove_group(&client->dev.kobj, &lm85_group); 1287 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); 1288 if (data->type == emc6d100) 1289 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); 1290 kfree(data); 1291 return 0; 1292 } 1293 1294 1295 static int lm85_read_value(struct i2c_client *client, u8 reg) 1296 { 1297 int res; 1298 1299 /* What size location is it? */ 1300 switch (reg) { 1301 case LM85_REG_FAN(0): /* Read WORD data */ 1302 case LM85_REG_FAN(1): 1303 case LM85_REG_FAN(2): 1304 case LM85_REG_FAN(3): 1305 case LM85_REG_FAN_MIN(0): 1306 case LM85_REG_FAN_MIN(1): 1307 case LM85_REG_FAN_MIN(2): 1308 case LM85_REG_FAN_MIN(3): 1309 case LM85_REG_ALARM1: /* Read both bytes at once */ 1310 res = i2c_smbus_read_byte_data(client, reg) & 0xff; 1311 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8; 1312 break; 1313 default: /* Read BYTE data */ 1314 res = i2c_smbus_read_byte_data(client, reg); 1315 break; 1316 } 1317 1318 return res; 1319 } 1320 1321 static void lm85_write_value(struct i2c_client *client, u8 reg, int value) 1322 { 1323 switch (reg) { 1324 case LM85_REG_FAN(0): /* Write WORD data */ 1325 case LM85_REG_FAN(1): 1326 case LM85_REG_FAN(2): 1327 case LM85_REG_FAN(3): 1328 case LM85_REG_FAN_MIN(0): 1329 case LM85_REG_FAN_MIN(1): 1330 case LM85_REG_FAN_MIN(2): 1331 case LM85_REG_FAN_MIN(3): 1332 /* NOTE: ALARM is read only, so not included here */ 1333 i2c_smbus_write_byte_data(client, reg, value & 0xff); 1334 i2c_smbus_write_byte_data(client, reg + 1, value >> 8); 1335 break; 1336 default: /* Write BYTE data */ 1337 i2c_smbus_write_byte_data(client, reg, value); 1338 break; 1339 } 1340 } 1341 1342 static struct lm85_data *lm85_update_device(struct device *dev) 1343 { 1344 struct i2c_client *client = to_i2c_client(dev); 1345 struct lm85_data *data = i2c_get_clientdata(client); 1346 int i; 1347 1348 mutex_lock(&data->update_lock); 1349 1350 if (!data->valid || 1351 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) { 1352 /* Things that change quickly */ 1353 dev_dbg(&client->dev, "Reading sensor values\n"); 1354 1355 /* Have to read extended bits first to "freeze" the 1356 * more significant bits that are read later. 1357 * There are 2 additional resolution bits per channel and we 1358 * have room for 4, so we shift them to the left. 1359 */ 1360 if (data->type == adm1027 || data->type == adt7463) { 1361 int ext1 = lm85_read_value(client, 1362 ADM1027_REG_EXTEND_ADC1); 1363 int ext2 = lm85_read_value(client, 1364 ADM1027_REG_EXTEND_ADC2); 1365 int val = (ext1 << 8) + ext2; 1366 1367 for (i = 0; i <= 4; i++) 1368 data->in_ext[i] = 1369 ((val >> (i * 2)) & 0x03) << 2; 1370 1371 for (i = 0; i <= 2; i++) 1372 data->temp_ext[i] = 1373 (val >> ((i + 4) * 2)) & 0x0c; 1374 } 1375 1376 data->vid = lm85_read_value(client, LM85_REG_VID); 1377 1378 for (i = 0; i <= 3; ++i) { 1379 data->in[i] = 1380 lm85_read_value(client, LM85_REG_IN(i)); 1381 data->fan[i] = 1382 lm85_read_value(client, LM85_REG_FAN(i)); 1383 } 1384 1385 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1386 data->in[4] = lm85_read_value(client, 1387 LM85_REG_IN(4)); 1388 } 1389 1390 for (i = 0; i <= 2; ++i) { 1391 data->temp[i] = 1392 lm85_read_value(client, LM85_REG_TEMP(i)); 1393 data->pwm[i] = 1394 lm85_read_value(client, LM85_REG_PWM(i)); 1395 } 1396 1397 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1398 1399 if (data->type == emc6d100) { 1400 /* Three more voltage sensors */ 1401 for (i = 5; i <= 7; ++i) { 1402 data->in[i] = lm85_read_value(client, 1403 EMC6D100_REG_IN(i)); 1404 } 1405 /* More alarm bits */ 1406 data->alarms |= lm85_read_value(client, 1407 EMC6D100_REG_ALARM3) << 16; 1408 } else if (data->type == emc6d102) { 1409 /* Have to read LSB bits after the MSB ones because 1410 the reading of the MSB bits has frozen the 1411 LSBs (backward from the ADM1027). 1412 */ 1413 int ext1 = lm85_read_value(client, 1414 EMC6D102_REG_EXTEND_ADC1); 1415 int ext2 = lm85_read_value(client, 1416 EMC6D102_REG_EXTEND_ADC2); 1417 int ext3 = lm85_read_value(client, 1418 EMC6D102_REG_EXTEND_ADC3); 1419 int ext4 = lm85_read_value(client, 1420 EMC6D102_REG_EXTEND_ADC4); 1421 data->in_ext[0] = ext3 & 0x0f; 1422 data->in_ext[1] = ext4 & 0x0f; 1423 data->in_ext[2] = ext4 >> 4; 1424 data->in_ext[3] = ext3 >> 4; 1425 data->in_ext[4] = ext2 >> 4; 1426 1427 data->temp_ext[0] = ext1 & 0x0f; 1428 data->temp_ext[1] = ext2 & 0x0f; 1429 data->temp_ext[2] = ext1 >> 4; 1430 } 1431 1432 data->last_reading = jiffies; 1433 } /* last_reading */ 1434 1435 if (!data->valid || 1436 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) { 1437 /* Things that don't change often */ 1438 dev_dbg(&client->dev, "Reading config values\n"); 1439 1440 for (i = 0; i <= 3; ++i) { 1441 data->in_min[i] = 1442 lm85_read_value(client, LM85_REG_IN_MIN(i)); 1443 data->in_max[i] = 1444 lm85_read_value(client, LM85_REG_IN_MAX(i)); 1445 data->fan_min[i] = 1446 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1447 } 1448 1449 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1450 data->in_min[4] = lm85_read_value(client, 1451 LM85_REG_IN_MIN(4)); 1452 data->in_max[4] = lm85_read_value(client, 1453 LM85_REG_IN_MAX(4)); 1454 } 1455 1456 if (data->type == emc6d100) { 1457 for (i = 5; i <= 7; ++i) { 1458 data->in_min[i] = lm85_read_value(client, 1459 EMC6D100_REG_IN_MIN(i)); 1460 data->in_max[i] = lm85_read_value(client, 1461 EMC6D100_REG_IN_MAX(i)); 1462 } 1463 } 1464 1465 for (i = 0; i <= 2; ++i) { 1466 int val; 1467 1468 data->temp_min[i] = 1469 lm85_read_value(client, LM85_REG_TEMP_MIN(i)); 1470 data->temp_max[i] = 1471 lm85_read_value(client, LM85_REG_TEMP_MAX(i)); 1472 1473 data->autofan[i].config = 1474 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1475 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1476 data->pwm_freq[i] = val & 0x07; 1477 data->zone[i].range = val >> 4; 1478 data->autofan[i].min_pwm = 1479 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1480 data->zone[i].limit = 1481 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1482 data->zone[i].critical = 1483 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1484 } 1485 1486 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1487 data->autofan[0].min_off = (i & 0x20) != 0; 1488 data->autofan[1].min_off = (i & 0x40) != 0; 1489 data->autofan[2].min_off = (i & 0x80) != 0; 1490 1491 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1492 data->zone[0].hyst = i >> 4; 1493 data->zone[1].hyst = i & 0x0f; 1494 1495 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1496 data->zone[2].hyst = i >> 4; 1497 1498 data->last_config = jiffies; 1499 } /* last_config */ 1500 1501 data->valid = 1; 1502 1503 mutex_unlock(&data->update_lock); 1504 1505 return data; 1506 } 1507 1508 1509 static int __init sm_lm85_init(void) 1510 { 1511 return i2c_add_driver(&lm85_driver); 1512 } 1513 1514 static void __exit sm_lm85_exit(void) 1515 { 1516 i2c_del_driver(&lm85_driver); 1517 } 1518 1519 MODULE_LICENSE("GPL"); 1520 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, " 1521 "Margit Schubert-While <margitsw@t-online.de>, " 1522 "Justin Thiessen <jthiessen@penguincomputing.com>"); 1523 MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1524 1525 module_init(sm_lm85_init); 1526 module_exit(sm_lm85_exit); 1527