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 9 Chip details at <http://www.national.com/ds/LM/LM85.pdf> 10 11 This program is free software; you can redistribute it and/or modify 12 it under the terms of the GNU General Public License as published by 13 the Free Software Foundation; either version 2 of the License, or 14 (at your option) any later version. 15 16 This program is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 GNU General Public License for more details. 20 21 You should have received a copy of the GNU General Public License 22 along with this program; if not, write to the Free Software 23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 24 */ 25 26 #include <linux/module.h> 27 #include <linux/init.h> 28 #include <linux/slab.h> 29 #include <linux/jiffies.h> 30 #include <linux/i2c.h> 31 #include <linux/hwmon.h> 32 #include <linux/hwmon-vid.h> 33 #include <linux/hwmon-sysfs.h> 34 #include <linux/err.h> 35 #include <linux/mutex.h> 36 37 /* Addresses to scan */ 38 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 39 40 /* Insmod parameters */ 41 I2C_CLIENT_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102); 42 43 /* The LM85 registers */ 44 45 #define LM85_REG_IN(nr) (0x20 + (nr)) 46 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2) 47 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2) 48 49 #define LM85_REG_TEMP(nr) (0x25 + (nr)) 50 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2) 51 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2) 52 53 /* Fan speeds are LSB, MSB (2 bytes) */ 54 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2) 55 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2) 56 57 #define LM85_REG_PWM(nr) (0x30 + (nr)) 58 59 #define LM85_REG_COMPANY 0x3e 60 #define LM85_REG_VERSTEP 0x3f 61 /* These are the recognized values for the above regs */ 62 #define LM85_COMPANY_NATIONAL 0x01 63 #define LM85_COMPANY_ANALOG_DEV 0x41 64 #define LM85_COMPANY_SMSC 0x5c 65 #define LM85_VERSTEP_VMASK 0xf0 66 #define LM85_VERSTEP_GENERIC 0x60 67 #define LM85_VERSTEP_LM85C 0x60 68 #define LM85_VERSTEP_LM85B 0x62 69 #define LM85_VERSTEP_ADM1027 0x60 70 #define LM85_VERSTEP_ADT7463 0x62 71 #define LM85_VERSTEP_ADT7463C 0x6A 72 #define LM85_VERSTEP_EMC6D100_A0 0x60 73 #define LM85_VERSTEP_EMC6D100_A1 0x61 74 #define LM85_VERSTEP_EMC6D102 0x65 75 76 #define LM85_REG_CONFIG 0x40 77 78 #define LM85_REG_ALARM1 0x41 79 #define LM85_REG_ALARM2 0x42 80 81 #define LM85_REG_VID 0x43 82 83 /* Automated FAN control */ 84 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr)) 85 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr)) 86 #define LM85_REG_AFAN_SPIKE1 0x62 87 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr)) 88 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr)) 89 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr)) 90 #define LM85_REG_AFAN_HYST1 0x6d 91 #define LM85_REG_AFAN_HYST2 0x6e 92 93 #define ADM1027_REG_EXTEND_ADC1 0x76 94 #define ADM1027_REG_EXTEND_ADC2 0x77 95 96 #define EMC6D100_REG_ALARM3 0x7d 97 /* IN5, IN6 and IN7 */ 98 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5)) 99 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2) 100 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2) 101 #define EMC6D102_REG_EXTEND_ADC1 0x85 102 #define EMC6D102_REG_EXTEND_ADC2 0x86 103 #define EMC6D102_REG_EXTEND_ADC3 0x87 104 #define EMC6D102_REG_EXTEND_ADC4 0x88 105 106 107 /* Conversions. Rounding and limit checking is only done on the TO_REG 108 variants. Note that you should be a bit careful with which arguments 109 these macros are called: arguments may be evaluated more than once. 110 */ 111 112 /* IN are scaled acording to built-in resistors */ 113 static const int lm85_scaling[] = { /* .001 Volts */ 114 2500, 2250, 3300, 5000, 12000, 115 3300, 1500, 1800 /*EMC6D100*/ 116 }; 117 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from)) 118 119 #define INS_TO_REG(n, val) \ 120 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255) 121 122 #define INSEXT_FROM_REG(n, val, ext) \ 123 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n]) 124 125 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n]) 126 127 /* FAN speed is measured using 90kHz clock */ 128 static inline u16 FAN_TO_REG(unsigned long val) 129 { 130 if (!val) 131 return 0xffff; 132 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe); 133 } 134 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \ 135 5400000 / (val)) 136 137 /* Temperature is reported in .001 degC increments */ 138 #define TEMP_TO_REG(val) \ 139 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127) 140 #define TEMPEXT_FROM_REG(val, ext) \ 141 SCALE(((val) << 4) + (ext), 16, 1000) 142 #define TEMP_FROM_REG(val) ((val) * 1000) 143 144 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255) 145 #define PWM_FROM_REG(val) (val) 146 147 148 /* ZONEs have the following parameters: 149 * Limit (low) temp, 1. degC 150 * Hysteresis (below limit), 1. degC (0-15) 151 * Range of speed control, .1 degC (2-80) 152 * Critical (high) temp, 1. degC 153 * 154 * FAN PWMs have the following parameters: 155 * Reference Zone, 1, 2, 3, etc. 156 * Spinup time, .05 sec 157 * PWM value at limit/low temp, 1 count 158 * PWM Frequency, 1. Hz 159 * PWM is Min or OFF below limit, flag 160 * Invert PWM output, flag 161 * 162 * Some chips filter the temp, others the fan. 163 * Filter constant (or disabled) .1 seconds 164 */ 165 166 /* These are the zone temperature range encodings in .001 degree C */ 167 static const int lm85_range_map[] = { 168 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000, 169 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000 170 }; 171 172 static int RANGE_TO_REG(int range) 173 { 174 int i; 175 176 if (range >= lm85_range_map[15]) 177 return 15; 178 179 /* Find the closest match */ 180 for (i = 14; i >= 0; --i) { 181 if (range >= lm85_range_map[i]) { 182 if ((lm85_range_map[i + 1] - range) < 183 (range - lm85_range_map[i])) 184 return i + 1; 185 return i; 186 } 187 } 188 189 return 0; 190 } 191 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f] 192 193 /* These are the PWM frequency encodings */ 194 static const int lm85_freq_map[] = { /* .1 Hz */ 195 100, 150, 230, 300, 380, 470, 620, 940 196 }; 197 198 static int FREQ_TO_REG(int freq) 199 { 200 int i; 201 202 if (freq >= lm85_freq_map[7]) 203 return 7; 204 for (i = 0; i < 7; ++i) 205 if (freq <= lm85_freq_map[i]) 206 break; 207 return i; 208 } 209 #define FREQ_FROM_REG(val) lm85_freq_map[(val) & 0x07] 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 freq; /* PWM frequency, encoded */ 279 u8 min_pwm; /* Minimum PWM value, encoded */ 280 u8 min_off; /* Min PWM or OFF below "limit", flag */ 281 }; 282 283 /* For each registered chip, we need to keep some data in memory. 284 The structure is dynamically allocated. */ 285 struct lm85_data { 286 struct i2c_client client; 287 struct device *hwmon_dev; 288 enum chips type; 289 290 struct mutex update_lock; 291 int valid; /* !=0 if following fields are valid */ 292 unsigned long last_reading; /* In jiffies */ 293 unsigned long last_config; /* In jiffies */ 294 295 u8 in[8]; /* Register value */ 296 u8 in_max[8]; /* Register value */ 297 u8 in_min[8]; /* Register value */ 298 s8 temp[3]; /* Register value */ 299 s8 temp_min[3]; /* Register value */ 300 s8 temp_max[3]; /* Register value */ 301 u16 fan[4]; /* Register value */ 302 u16 fan_min[4]; /* Register value */ 303 u8 pwm[3]; /* Register value */ 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_attach_adapter(struct i2c_adapter *adapter); 314 static int lm85_detect(struct i2c_adapter *adapter, int address, 315 int kind); 316 static int lm85_detach_client(struct i2c_client *client); 317 318 static int lm85_read_value(struct i2c_client *client, u8 reg); 319 static void lm85_write_value(struct i2c_client *client, u8 reg, int value); 320 static struct lm85_data *lm85_update_device(struct device *dev); 321 322 323 static struct i2c_driver lm85_driver = { 324 .driver = { 325 .name = "lm85", 326 }, 327 .attach_adapter = lm85_attach_adapter, 328 .detach_client = lm85_detach_client, 329 }; 330 331 332 /* 4 Fans */ 333 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 334 char *buf) 335 { 336 int nr = to_sensor_dev_attr(attr)->index; 337 struct lm85_data *data = lm85_update_device(dev); 338 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr])); 339 } 340 341 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, 342 char *buf) 343 { 344 int nr = to_sensor_dev_attr(attr)->index; 345 struct lm85_data *data = lm85_update_device(dev); 346 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr])); 347 } 348 349 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 350 const char *buf, size_t count) 351 { 352 int nr = to_sensor_dev_attr(attr)->index; 353 struct i2c_client *client = to_i2c_client(dev); 354 struct lm85_data *data = i2c_get_clientdata(client); 355 unsigned long val = simple_strtoul(buf, NULL, 10); 356 357 mutex_lock(&data->update_lock); 358 data->fan_min[nr] = FAN_TO_REG(val); 359 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); 360 mutex_unlock(&data->update_lock); 361 return count; 362 } 363 364 #define show_fan_offset(offset) \ 365 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 366 show_fan, NULL, offset - 1); \ 367 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 368 show_fan_min, set_fan_min, offset - 1) 369 370 show_fan_offset(1); 371 show_fan_offset(2); 372 show_fan_offset(3); 373 show_fan_offset(4); 374 375 /* vid, vrm, alarms */ 376 377 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, 378 char *buf) 379 { 380 struct lm85_data *data = lm85_update_device(dev); 381 int vid; 382 383 if (data->type == adt7463 && (data->vid & 0x80)) { 384 /* 6-pin VID (VRM 10) */ 385 vid = vid_from_reg(data->vid & 0x3f, data->vrm); 386 } else { 387 /* 5-pin VID (VRM 9) */ 388 vid = vid_from_reg(data->vid & 0x1f, data->vrm); 389 } 390 391 return sprintf(buf, "%d\n", vid); 392 } 393 394 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 395 396 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, 397 char *buf) 398 { 399 struct lm85_data *data = dev_get_drvdata(dev); 400 return sprintf(buf, "%ld\n", (long) data->vrm); 401 } 402 403 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, 404 const char *buf, size_t count) 405 { 406 struct lm85_data *data = dev_get_drvdata(dev); 407 data->vrm = simple_strtoul(buf, NULL, 10); 408 return count; 409 } 410 411 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 412 413 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute 414 *attr, char *buf) 415 { 416 struct lm85_data *data = lm85_update_device(dev); 417 return sprintf(buf, "%u\n", data->alarms); 418 } 419 420 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 421 422 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 423 char *buf) 424 { 425 int nr = to_sensor_dev_attr(attr)->index; 426 struct lm85_data *data = lm85_update_device(dev); 427 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); 428 } 429 430 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 431 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 432 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 433 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 434 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 435 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18); 436 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16); 437 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17); 438 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 439 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14); 440 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 441 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6); 442 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 443 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10); 444 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11); 445 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12); 446 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13); 447 448 /* pwm */ 449 450 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 451 char *buf) 452 { 453 int nr = to_sensor_dev_attr(attr)->index; 454 struct lm85_data *data = lm85_update_device(dev); 455 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr])); 456 } 457 458 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 459 const char *buf, size_t count) 460 { 461 int nr = to_sensor_dev_attr(attr)->index; 462 struct i2c_client *client = to_i2c_client(dev); 463 struct lm85_data *data = i2c_get_clientdata(client); 464 long val = simple_strtol(buf, NULL, 10); 465 466 mutex_lock(&data->update_lock); 467 data->pwm[nr] = PWM_TO_REG(val); 468 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 469 mutex_unlock(&data->update_lock); 470 return count; 471 } 472 473 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute 474 *attr, char *buf) 475 { 476 int nr = to_sensor_dev_attr(attr)->index; 477 struct lm85_data *data = lm85_update_device(dev); 478 int pwm_zone, enable; 479 480 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 481 switch (pwm_zone) { 482 case -1: /* PWM is always at 100% */ 483 enable = 0; 484 break; 485 case 0: /* PWM is always at 0% */ 486 case -2: /* PWM responds to manual control */ 487 enable = 1; 488 break; 489 default: /* PWM in automatic mode */ 490 enable = 2; 491 } 492 return sprintf(buf, "%d\n", enable); 493 } 494 495 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute 496 *attr, const char *buf, size_t count) 497 { 498 int nr = to_sensor_dev_attr(attr)->index; 499 struct i2c_client *client = to_i2c_client(dev); 500 struct lm85_data *data = i2c_get_clientdata(client); 501 long val = simple_strtol(buf, NULL, 10); 502 u8 config; 503 504 switch (val) { 505 case 0: 506 config = 3; 507 break; 508 case 1: 509 config = 7; 510 break; 511 case 2: 512 /* Here we have to choose arbitrarily one of the 5 possible 513 configurations; I go for the safest */ 514 config = 6; 515 break; 516 default: 517 return -EINVAL; 518 } 519 520 mutex_lock(&data->update_lock); 521 data->autofan[nr].config = lm85_read_value(client, 522 LM85_REG_AFAN_CONFIG(nr)); 523 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0) 524 | (config << 5); 525 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 526 data->autofan[nr].config); 527 mutex_unlock(&data->update_lock); 528 return count; 529 } 530 531 #define show_pwm_reg(offset) \ 532 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 533 show_pwm, set_pwm, offset - 1); \ 534 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ 535 show_pwm_enable, set_pwm_enable, offset - 1) 536 537 show_pwm_reg(1); 538 show_pwm_reg(2); 539 show_pwm_reg(3); 540 541 /* Voltages */ 542 543 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 544 char *buf) 545 { 546 int nr = to_sensor_dev_attr(attr)->index; 547 struct lm85_data *data = lm85_update_device(dev); 548 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr], 549 data->in_ext[nr])); 550 } 551 552 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 553 char *buf) 554 { 555 int nr = to_sensor_dev_attr(attr)->index; 556 struct lm85_data *data = lm85_update_device(dev); 557 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr])); 558 } 559 560 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 561 const char *buf, size_t count) 562 { 563 int nr = to_sensor_dev_attr(attr)->index; 564 struct i2c_client *client = to_i2c_client(dev); 565 struct lm85_data *data = i2c_get_clientdata(client); 566 long val = simple_strtol(buf, NULL, 10); 567 568 mutex_lock(&data->update_lock); 569 data->in_min[nr] = INS_TO_REG(nr, val); 570 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 571 mutex_unlock(&data->update_lock); 572 return count; 573 } 574 575 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 576 char *buf) 577 { 578 int nr = to_sensor_dev_attr(attr)->index; 579 struct lm85_data *data = lm85_update_device(dev); 580 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr])); 581 } 582 583 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 584 const char *buf, size_t count) 585 { 586 int nr = to_sensor_dev_attr(attr)->index; 587 struct i2c_client *client = to_i2c_client(dev); 588 struct lm85_data *data = i2c_get_clientdata(client); 589 long val = simple_strtol(buf, NULL, 10); 590 591 mutex_lock(&data->update_lock); 592 data->in_max[nr] = INS_TO_REG(nr, val); 593 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 594 mutex_unlock(&data->update_lock); 595 return count; 596 } 597 598 #define show_in_reg(offset) \ 599 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 600 show_in, NULL, offset); \ 601 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 602 show_in_min, set_in_min, offset); \ 603 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 604 show_in_max, set_in_max, offset) 605 606 show_in_reg(0); 607 show_in_reg(1); 608 show_in_reg(2); 609 show_in_reg(3); 610 show_in_reg(4); 611 show_in_reg(5); 612 show_in_reg(6); 613 show_in_reg(7); 614 615 /* Temps */ 616 617 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 618 char *buf) 619 { 620 int nr = to_sensor_dev_attr(attr)->index; 621 struct lm85_data *data = lm85_update_device(dev); 622 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr], 623 data->temp_ext[nr])); 624 } 625 626 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, 627 char *buf) 628 { 629 int nr = to_sensor_dev_attr(attr)->index; 630 struct lm85_data *data = lm85_update_device(dev); 631 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); 632 } 633 634 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, 635 const char *buf, size_t count) 636 { 637 int nr = to_sensor_dev_attr(attr)->index; 638 struct i2c_client *client = to_i2c_client(dev); 639 struct lm85_data *data = i2c_get_clientdata(client); 640 long val = simple_strtol(buf, NULL, 10); 641 642 mutex_lock(&data->update_lock); 643 data->temp_min[nr] = TEMP_TO_REG(val); 644 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 645 mutex_unlock(&data->update_lock); 646 return count; 647 } 648 649 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 650 char *buf) 651 { 652 int nr = to_sensor_dev_attr(attr)->index; 653 struct lm85_data *data = lm85_update_device(dev); 654 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); 655 } 656 657 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 658 const char *buf, size_t count) 659 { 660 int nr = to_sensor_dev_attr(attr)->index; 661 struct i2c_client *client = to_i2c_client(dev); 662 struct lm85_data *data = i2c_get_clientdata(client); 663 long val = simple_strtol(buf, NULL, 10); 664 665 mutex_lock(&data->update_lock); 666 data->temp_max[nr] = TEMP_TO_REG(val); 667 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 668 mutex_unlock(&data->update_lock); 669 return count; 670 } 671 672 #define show_temp_reg(offset) \ 673 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 674 show_temp, NULL, offset - 1); \ 675 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 676 show_temp_min, set_temp_min, offset - 1); \ 677 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 678 show_temp_max, set_temp_max, offset - 1); 679 680 show_temp_reg(1); 681 show_temp_reg(2); 682 show_temp_reg(3); 683 684 685 /* Automatic PWM control */ 686 687 static ssize_t show_pwm_auto_channels(struct device *dev, 688 struct device_attribute *attr, char *buf) 689 { 690 int nr = to_sensor_dev_attr(attr)->index; 691 struct lm85_data *data = lm85_update_device(dev); 692 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config)); 693 } 694 695 static ssize_t set_pwm_auto_channels(struct device *dev, 696 struct device_attribute *attr, const char *buf, size_t count) 697 { 698 int nr = to_sensor_dev_attr(attr)->index; 699 struct i2c_client *client = to_i2c_client(dev); 700 struct lm85_data *data = i2c_get_clientdata(client); 701 long val = simple_strtol(buf, NULL, 10); 702 703 mutex_lock(&data->update_lock); 704 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 705 | ZONE_TO_REG(val); 706 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 707 data->autofan[nr].config); 708 mutex_unlock(&data->update_lock); 709 return count; 710 } 711 712 static ssize_t show_pwm_auto_pwm_min(struct device *dev, 713 struct device_attribute *attr, char *buf) 714 { 715 int nr = to_sensor_dev_attr(attr)->index; 716 struct lm85_data *data = lm85_update_device(dev); 717 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 718 } 719 720 static ssize_t set_pwm_auto_pwm_min(struct device *dev, 721 struct device_attribute *attr, const char *buf, size_t count) 722 { 723 int nr = to_sensor_dev_attr(attr)->index; 724 struct i2c_client *client = to_i2c_client(dev); 725 struct lm85_data *data = i2c_get_clientdata(client); 726 long val = simple_strtol(buf, NULL, 10); 727 728 mutex_lock(&data->update_lock); 729 data->autofan[nr].min_pwm = PWM_TO_REG(val); 730 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), 731 data->autofan[nr].min_pwm); 732 mutex_unlock(&data->update_lock); 733 return count; 734 } 735 736 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, 737 struct device_attribute *attr, char *buf) 738 { 739 int nr = to_sensor_dev_attr(attr)->index; 740 struct lm85_data *data = lm85_update_device(dev); 741 return sprintf(buf, "%d\n", data->autofan[nr].min_off); 742 } 743 744 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, 745 struct device_attribute *attr, const char *buf, size_t count) 746 { 747 int nr = to_sensor_dev_attr(attr)->index; 748 struct i2c_client *client = to_i2c_client(dev); 749 struct lm85_data *data = i2c_get_clientdata(client); 750 long val = simple_strtol(buf, NULL, 10); 751 u8 tmp; 752 753 mutex_lock(&data->update_lock); 754 data->autofan[nr].min_off = val; 755 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 756 tmp &= ~(0x20 << nr); 757 if (data->autofan[nr].min_off) 758 tmp |= 0x20 << nr; 759 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp); 760 mutex_unlock(&data->update_lock); 761 return count; 762 } 763 764 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, 765 struct device_attribute *attr, char *buf) 766 { 767 int nr = to_sensor_dev_attr(attr)->index; 768 struct lm85_data *data = lm85_update_device(dev); 769 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->autofan[nr].freq)); 770 } 771 772 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, 773 struct device_attribute *attr, const char *buf, size_t count) 774 { 775 int nr = to_sensor_dev_attr(attr)->index; 776 struct i2c_client *client = to_i2c_client(dev); 777 struct lm85_data *data = i2c_get_clientdata(client); 778 long val = simple_strtol(buf, NULL, 10); 779 780 mutex_lock(&data->update_lock); 781 data->autofan[nr].freq = FREQ_TO_REG(val); 782 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 783 (data->zone[nr].range << 4) 784 | data->autofan[nr].freq); 785 mutex_unlock(&data->update_lock); 786 return count; 787 } 788 789 #define pwm_auto(offset) \ 790 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \ 791 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \ 792 set_pwm_auto_channels, offset - 1); \ 793 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \ 794 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \ 795 set_pwm_auto_pwm_min, offset - 1); \ 796 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \ 797 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \ 798 set_pwm_auto_pwm_minctl, offset - 1); \ 799 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_freq, \ 800 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_freq, \ 801 set_pwm_auto_pwm_freq, offset - 1); 802 803 pwm_auto(1); 804 pwm_auto(2); 805 pwm_auto(3); 806 807 /* Temperature settings for automatic PWM control */ 808 809 static ssize_t show_temp_auto_temp_off(struct device *dev, 810 struct device_attribute *attr, char *buf) 811 { 812 int nr = to_sensor_dev_attr(attr)->index; 813 struct lm85_data *data = lm85_update_device(dev); 814 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 815 HYST_FROM_REG(data->zone[nr].hyst)); 816 } 817 818 static ssize_t set_temp_auto_temp_off(struct device *dev, 819 struct device_attribute *attr, const char *buf, size_t count) 820 { 821 int nr = to_sensor_dev_attr(attr)->index; 822 struct i2c_client *client = to_i2c_client(dev); 823 struct lm85_data *data = i2c_get_clientdata(client); 824 int min; 825 long val = simple_strtol(buf, NULL, 10); 826 827 mutex_lock(&data->update_lock); 828 min = TEMP_FROM_REG(data->zone[nr].limit); 829 data->zone[nr].off_desired = TEMP_TO_REG(val); 830 data->zone[nr].hyst = HYST_TO_REG(min - val); 831 if (nr == 0 || nr == 1) { 832 lm85_write_value(client, LM85_REG_AFAN_HYST1, 833 (data->zone[0].hyst << 4) 834 | data->zone[1].hyst); 835 } else { 836 lm85_write_value(client, LM85_REG_AFAN_HYST2, 837 (data->zone[2].hyst << 4)); 838 } 839 mutex_unlock(&data->update_lock); 840 return count; 841 } 842 843 static ssize_t show_temp_auto_temp_min(struct device *dev, 844 struct device_attribute *attr, char *buf) 845 { 846 int nr = to_sensor_dev_attr(attr)->index; 847 struct lm85_data *data = lm85_update_device(dev); 848 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit)); 849 } 850 851 static ssize_t set_temp_auto_temp_min(struct device *dev, 852 struct device_attribute *attr, const char *buf, size_t count) 853 { 854 int nr = to_sensor_dev_attr(attr)->index; 855 struct i2c_client *client = to_i2c_client(dev); 856 struct lm85_data *data = i2c_get_clientdata(client); 857 long val = simple_strtol(buf, NULL, 10); 858 859 mutex_lock(&data->update_lock); 860 data->zone[nr].limit = TEMP_TO_REG(val); 861 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 862 data->zone[nr].limit); 863 864 /* Update temp_auto_max and temp_auto_range */ 865 data->zone[nr].range = RANGE_TO_REG( 866 TEMP_FROM_REG(data->zone[nr].max_desired) - 867 TEMP_FROM_REG(data->zone[nr].limit)); 868 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 869 ((data->zone[nr].range & 0x0f) << 4) 870 | (data->autofan[nr].freq & 0x07)); 871 872 /* Update temp_auto_hyst and temp_auto_off */ 873 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 874 data->zone[nr].limit) - TEMP_FROM_REG( 875 data->zone[nr].off_desired)); 876 if (nr == 0 || nr == 1) { 877 lm85_write_value(client, LM85_REG_AFAN_HYST1, 878 (data->zone[0].hyst << 4) 879 | data->zone[1].hyst); 880 } else { 881 lm85_write_value(client, LM85_REG_AFAN_HYST2, 882 (data->zone[2].hyst << 4)); 883 } 884 mutex_unlock(&data->update_lock); 885 return count; 886 } 887 888 static ssize_t show_temp_auto_temp_max(struct device *dev, 889 struct device_attribute *attr, char *buf) 890 { 891 int nr = to_sensor_dev_attr(attr)->index; 892 struct lm85_data *data = lm85_update_device(dev); 893 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 894 RANGE_FROM_REG(data->zone[nr].range)); 895 } 896 897 static ssize_t set_temp_auto_temp_max(struct device *dev, 898 struct device_attribute *attr, const char *buf, size_t count) 899 { 900 int nr = to_sensor_dev_attr(attr)->index; 901 struct i2c_client *client = to_i2c_client(dev); 902 struct lm85_data *data = i2c_get_clientdata(client); 903 int min; 904 long val = simple_strtol(buf, NULL, 10); 905 906 mutex_lock(&data->update_lock); 907 min = TEMP_FROM_REG(data->zone[nr].limit); 908 data->zone[nr].max_desired = TEMP_TO_REG(val); 909 data->zone[nr].range = RANGE_TO_REG( 910 val - min); 911 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 912 ((data->zone[nr].range & 0x0f) << 4) 913 | (data->autofan[nr].freq & 0x07)); 914 mutex_unlock(&data->update_lock); 915 return count; 916 } 917 918 static ssize_t show_temp_auto_temp_crit(struct device *dev, 919 struct device_attribute *attr, char *buf) 920 { 921 int nr = to_sensor_dev_attr(attr)->index; 922 struct lm85_data *data = lm85_update_device(dev); 923 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 924 } 925 926 static ssize_t set_temp_auto_temp_crit(struct device *dev, 927 struct device_attribute *attr, const char *buf, size_t count) 928 { 929 int nr = to_sensor_dev_attr(attr)->index; 930 struct i2c_client *client = to_i2c_client(dev); 931 struct lm85_data *data = i2c_get_clientdata(client); 932 long val = simple_strtol(buf, NULL, 10); 933 934 mutex_lock(&data->update_lock); 935 data->zone[nr].critical = TEMP_TO_REG(val); 936 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 937 data->zone[nr].critical); 938 mutex_unlock(&data->update_lock); 939 return count; 940 } 941 942 #define temp_auto(offset) \ 943 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \ 944 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \ 945 set_temp_auto_temp_off, offset - 1); \ 946 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \ 947 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \ 948 set_temp_auto_temp_min, offset - 1); \ 949 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \ 950 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \ 951 set_temp_auto_temp_max, offset - 1); \ 952 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \ 953 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \ 954 set_temp_auto_temp_crit, offset - 1); 955 956 temp_auto(1); 957 temp_auto(2); 958 temp_auto(3); 959 960 static int lm85_attach_adapter(struct i2c_adapter *adapter) 961 { 962 if (!(adapter->class & I2C_CLASS_HWMON)) 963 return 0; 964 return i2c_probe(adapter, &addr_data, lm85_detect); 965 } 966 967 static struct attribute *lm85_attributes[] = { 968 &sensor_dev_attr_fan1_input.dev_attr.attr, 969 &sensor_dev_attr_fan2_input.dev_attr.attr, 970 &sensor_dev_attr_fan3_input.dev_attr.attr, 971 &sensor_dev_attr_fan4_input.dev_attr.attr, 972 &sensor_dev_attr_fan1_min.dev_attr.attr, 973 &sensor_dev_attr_fan2_min.dev_attr.attr, 974 &sensor_dev_attr_fan3_min.dev_attr.attr, 975 &sensor_dev_attr_fan4_min.dev_attr.attr, 976 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 977 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 978 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 979 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 980 981 &sensor_dev_attr_pwm1.dev_attr.attr, 982 &sensor_dev_attr_pwm2.dev_attr.attr, 983 &sensor_dev_attr_pwm3.dev_attr.attr, 984 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 985 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 986 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 987 988 &sensor_dev_attr_in0_input.dev_attr.attr, 989 &sensor_dev_attr_in1_input.dev_attr.attr, 990 &sensor_dev_attr_in2_input.dev_attr.attr, 991 &sensor_dev_attr_in3_input.dev_attr.attr, 992 &sensor_dev_attr_in0_min.dev_attr.attr, 993 &sensor_dev_attr_in1_min.dev_attr.attr, 994 &sensor_dev_attr_in2_min.dev_attr.attr, 995 &sensor_dev_attr_in3_min.dev_attr.attr, 996 &sensor_dev_attr_in0_max.dev_attr.attr, 997 &sensor_dev_attr_in1_max.dev_attr.attr, 998 &sensor_dev_attr_in2_max.dev_attr.attr, 999 &sensor_dev_attr_in3_max.dev_attr.attr, 1000 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1001 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1002 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1003 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1004 1005 &sensor_dev_attr_temp1_input.dev_attr.attr, 1006 &sensor_dev_attr_temp2_input.dev_attr.attr, 1007 &sensor_dev_attr_temp3_input.dev_attr.attr, 1008 &sensor_dev_attr_temp1_min.dev_attr.attr, 1009 &sensor_dev_attr_temp2_min.dev_attr.attr, 1010 &sensor_dev_attr_temp3_min.dev_attr.attr, 1011 &sensor_dev_attr_temp1_max.dev_attr.attr, 1012 &sensor_dev_attr_temp2_max.dev_attr.attr, 1013 &sensor_dev_attr_temp3_max.dev_attr.attr, 1014 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1015 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1016 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1017 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1018 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1019 1020 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr, 1021 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr, 1022 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr, 1023 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr, 1024 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr, 1025 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr, 1026 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr, 1027 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr, 1028 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr, 1029 &sensor_dev_attr_pwm1_auto_pwm_freq.dev_attr.attr, 1030 &sensor_dev_attr_pwm2_auto_pwm_freq.dev_attr.attr, 1031 &sensor_dev_attr_pwm3_auto_pwm_freq.dev_attr.attr, 1032 1033 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr, 1034 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr, 1035 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr, 1036 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr, 1037 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr, 1038 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr, 1039 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr, 1040 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr, 1041 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr, 1042 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr, 1043 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr, 1044 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr, 1045 1046 &dev_attr_vrm.attr, 1047 &dev_attr_cpu0_vid.attr, 1048 &dev_attr_alarms.attr, 1049 NULL 1050 }; 1051 1052 static const struct attribute_group lm85_group = { 1053 .attrs = lm85_attributes, 1054 }; 1055 1056 static struct attribute *lm85_attributes_in4[] = { 1057 &sensor_dev_attr_in4_input.dev_attr.attr, 1058 &sensor_dev_attr_in4_min.dev_attr.attr, 1059 &sensor_dev_attr_in4_max.dev_attr.attr, 1060 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1061 NULL 1062 }; 1063 1064 static const struct attribute_group lm85_group_in4 = { 1065 .attrs = lm85_attributes_in4, 1066 }; 1067 1068 static struct attribute *lm85_attributes_in567[] = { 1069 &sensor_dev_attr_in5_input.dev_attr.attr, 1070 &sensor_dev_attr_in6_input.dev_attr.attr, 1071 &sensor_dev_attr_in7_input.dev_attr.attr, 1072 &sensor_dev_attr_in5_min.dev_attr.attr, 1073 &sensor_dev_attr_in6_min.dev_attr.attr, 1074 &sensor_dev_attr_in7_min.dev_attr.attr, 1075 &sensor_dev_attr_in5_max.dev_attr.attr, 1076 &sensor_dev_attr_in6_max.dev_attr.attr, 1077 &sensor_dev_attr_in7_max.dev_attr.attr, 1078 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1079 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1080 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1081 NULL 1082 }; 1083 1084 static const struct attribute_group lm85_group_in567 = { 1085 .attrs = lm85_attributes_in567, 1086 }; 1087 1088 static void lm85_init_client(struct i2c_client *client) 1089 { 1090 int value; 1091 1092 /* Start monitoring if needed */ 1093 value = lm85_read_value(client, LM85_REG_CONFIG); 1094 if (!(value & 0x01)) { 1095 dev_info(&client->dev, "Starting monitoring\n"); 1096 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01); 1097 } 1098 1099 /* Warn about unusual configuration bits */ 1100 if (value & 0x02) 1101 dev_warn(&client->dev, "Device configuration is locked\n"); 1102 if (!(value & 0x04)) 1103 dev_warn(&client->dev, "Device is not ready\n"); 1104 } 1105 1106 static int lm85_detect(struct i2c_adapter *adapter, int address, 1107 int kind) 1108 { 1109 int company, verstep; 1110 struct i2c_client *client; 1111 struct lm85_data *data; 1112 int err = 0; 1113 const char *type_name; 1114 1115 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { 1116 /* We need to be able to do byte I/O */ 1117 goto ERROR0; 1118 } 1119 1120 /* OK. For now, we presume we have a valid client. We now create the 1121 client structure, even though we cannot fill it completely yet. 1122 But it allows us to access lm85_{read,write}_value. */ 1123 1124 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) { 1125 err = -ENOMEM; 1126 goto ERROR0; 1127 } 1128 1129 client = &data->client; 1130 i2c_set_clientdata(client, data); 1131 client->addr = address; 1132 client->adapter = adapter; 1133 client->driver = &lm85_driver; 1134 1135 /* Now, we do the remaining detection. */ 1136 1137 company = lm85_read_value(client, LM85_REG_COMPANY); 1138 verstep = lm85_read_value(client, LM85_REG_VERSTEP); 1139 1140 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with" 1141 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n", 1142 i2c_adapter_id(client->adapter), client->addr, 1143 company, verstep); 1144 1145 /* If auto-detecting, Determine the chip type. */ 1146 if (kind <= 0) { 1147 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n", 1148 i2c_adapter_id(adapter), address); 1149 if (company == LM85_COMPANY_NATIONAL 1150 && verstep == LM85_VERSTEP_LM85C) { 1151 kind = lm85c; 1152 } else if (company == LM85_COMPANY_NATIONAL 1153 && verstep == LM85_VERSTEP_LM85B) { 1154 kind = lm85b; 1155 } else if (company == LM85_COMPANY_NATIONAL 1156 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1157 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1158 " Defaulting to LM85.\n", verstep); 1159 kind = any_chip; 1160 } else if (company == LM85_COMPANY_ANALOG_DEV 1161 && verstep == LM85_VERSTEP_ADM1027) { 1162 kind = adm1027; 1163 } else if (company == LM85_COMPANY_ANALOG_DEV 1164 && (verstep == LM85_VERSTEP_ADT7463 1165 || verstep == LM85_VERSTEP_ADT7463C)) { 1166 kind = adt7463; 1167 } else if (company == LM85_COMPANY_ANALOG_DEV 1168 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1169 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1170 " Defaulting to Generic LM85.\n", verstep); 1171 kind = any_chip; 1172 } else if (company == LM85_COMPANY_SMSC 1173 && (verstep == LM85_VERSTEP_EMC6D100_A0 1174 || verstep == LM85_VERSTEP_EMC6D100_A1)) { 1175 /* Unfortunately, we can't tell a '100 from a '101 1176 * from the registers. Since a '101 is a '100 1177 * in a package with fewer pins and therefore no 1178 * 3.3V, 1.5V or 1.8V inputs, perhaps if those 1179 * inputs read 0, then it's a '101. 1180 */ 1181 kind = emc6d100; 1182 } else if (company == LM85_COMPANY_SMSC 1183 && verstep == LM85_VERSTEP_EMC6D102) { 1184 kind = emc6d102; 1185 } else if (company == LM85_COMPANY_SMSC 1186 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1187 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n"); 1188 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x" 1189 " Defaulting to Generic LM85.\n", verstep); 1190 kind = any_chip; 1191 } else if (kind == any_chip 1192 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1193 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n"); 1194 /* Leave kind as "any_chip" */ 1195 } else { 1196 dev_dbg(&adapter->dev, "Autodetection failed\n"); 1197 /* Not an LM85... */ 1198 if (kind == any_chip) { /* User used force=x,y */ 1199 dev_err(&adapter->dev, "Generic LM85 Version 6 not" 1200 " found at %d,0x%02x. Try force_lm85c.\n", 1201 i2c_adapter_id(adapter), address); 1202 } 1203 err = 0; 1204 goto ERROR1; 1205 } 1206 } 1207 1208 /* Fill in the chip specific driver values */ 1209 switch (kind) { 1210 case lm85b: 1211 type_name = "lm85b"; 1212 break; 1213 case lm85c: 1214 type_name = "lm85c"; 1215 break; 1216 case adm1027: 1217 type_name = "adm1027"; 1218 break; 1219 case adt7463: 1220 type_name = "adt7463"; 1221 break; 1222 case emc6d100: 1223 type_name = "emc6d100"; 1224 break; 1225 case emc6d102: 1226 type_name = "emc6d102"; 1227 break; 1228 default: 1229 type_name = "lm85"; 1230 } 1231 strlcpy(client->name, type_name, I2C_NAME_SIZE); 1232 1233 /* Fill in the remaining client fields */ 1234 data->type = kind; 1235 mutex_init(&data->update_lock); 1236 1237 /* Tell the I2C layer a new client has arrived */ 1238 err = i2c_attach_client(client); 1239 if (err) 1240 goto ERROR1; 1241 1242 /* Set the VRM version */ 1243 data->vrm = vid_which_vrm(); 1244 1245 /* Initialize the LM85 chip */ 1246 lm85_init_client(client); 1247 1248 /* Register sysfs hooks */ 1249 err = sysfs_create_group(&client->dev.kobj, &lm85_group); 1250 if (err) 1251 goto ERROR2; 1252 1253 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used 1254 as a sixth digital VID input rather than an analog input. */ 1255 data->vid = lm85_read_value(client, LM85_REG_VID); 1256 if (!(kind == adt7463 && (data->vid & 0x80))) 1257 if ((err = sysfs_create_group(&client->dev.kobj, 1258 &lm85_group_in4))) 1259 goto ERROR3; 1260 1261 /* The EMC6D100 has 3 additional voltage inputs */ 1262 if (kind == emc6d100) 1263 if ((err = sysfs_create_group(&client->dev.kobj, 1264 &lm85_group_in567))) 1265 goto ERROR3; 1266 1267 data->hwmon_dev = hwmon_device_register(&client->dev); 1268 if (IS_ERR(data->hwmon_dev)) { 1269 err = PTR_ERR(data->hwmon_dev); 1270 goto ERROR3; 1271 } 1272 1273 return 0; 1274 1275 /* Error out and cleanup code */ 1276 ERROR3: 1277 sysfs_remove_group(&client->dev.kobj, &lm85_group); 1278 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); 1279 if (kind == emc6d100) 1280 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); 1281 ERROR2: 1282 i2c_detach_client(client); 1283 ERROR1: 1284 kfree(data); 1285 ERROR0: 1286 return err; 1287 } 1288 1289 static int lm85_detach_client(struct i2c_client *client) 1290 { 1291 struct lm85_data *data = i2c_get_clientdata(client); 1292 hwmon_device_unregister(data->hwmon_dev); 1293 sysfs_remove_group(&client->dev.kobj, &lm85_group); 1294 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); 1295 if (data->type == emc6d100) 1296 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); 1297 i2c_detach_client(client); 1298 kfree(data); 1299 return 0; 1300 } 1301 1302 1303 static int lm85_read_value(struct i2c_client *client, u8 reg) 1304 { 1305 int res; 1306 1307 /* What size location is it? */ 1308 switch (reg) { 1309 case LM85_REG_FAN(0): /* Read WORD data */ 1310 case LM85_REG_FAN(1): 1311 case LM85_REG_FAN(2): 1312 case LM85_REG_FAN(3): 1313 case LM85_REG_FAN_MIN(0): 1314 case LM85_REG_FAN_MIN(1): 1315 case LM85_REG_FAN_MIN(2): 1316 case LM85_REG_FAN_MIN(3): 1317 case LM85_REG_ALARM1: /* Read both bytes at once */ 1318 res = i2c_smbus_read_byte_data(client, reg) & 0xff; 1319 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8; 1320 break; 1321 default: /* Read BYTE data */ 1322 res = i2c_smbus_read_byte_data(client, reg); 1323 break; 1324 } 1325 1326 return res; 1327 } 1328 1329 static void lm85_write_value(struct i2c_client *client, u8 reg, int value) 1330 { 1331 switch (reg) { 1332 case LM85_REG_FAN(0): /* Write WORD data */ 1333 case LM85_REG_FAN(1): 1334 case LM85_REG_FAN(2): 1335 case LM85_REG_FAN(3): 1336 case LM85_REG_FAN_MIN(0): 1337 case LM85_REG_FAN_MIN(1): 1338 case LM85_REG_FAN_MIN(2): 1339 case LM85_REG_FAN_MIN(3): 1340 /* NOTE: ALARM is read only, so not included here */ 1341 i2c_smbus_write_byte_data(client, reg, value & 0xff); 1342 i2c_smbus_write_byte_data(client, reg + 1, value >> 8); 1343 break; 1344 default: /* Write BYTE data */ 1345 i2c_smbus_write_byte_data(client, reg, value); 1346 break; 1347 } 1348 } 1349 1350 static struct lm85_data *lm85_update_device(struct device *dev) 1351 { 1352 struct i2c_client *client = to_i2c_client(dev); 1353 struct lm85_data *data = i2c_get_clientdata(client); 1354 int i; 1355 1356 mutex_lock(&data->update_lock); 1357 1358 if (!data->valid || 1359 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) { 1360 /* Things that change quickly */ 1361 dev_dbg(&client->dev, "Reading sensor values\n"); 1362 1363 /* Have to read extended bits first to "freeze" the 1364 * more significant bits that are read later. 1365 * There are 2 additional resolution bits per channel and we 1366 * have room for 4, so we shift them to the left. 1367 */ 1368 if (data->type == adm1027 || data->type == adt7463) { 1369 int ext1 = lm85_read_value(client, 1370 ADM1027_REG_EXTEND_ADC1); 1371 int ext2 = lm85_read_value(client, 1372 ADM1027_REG_EXTEND_ADC2); 1373 int val = (ext1 << 8) + ext2; 1374 1375 for (i = 0; i <= 4; i++) 1376 data->in_ext[i] = 1377 ((val >> (i * 2)) & 0x03) << 2; 1378 1379 for (i = 0; i <= 2; i++) 1380 data->temp_ext[i] = 1381 (val >> ((i + 4) * 2)) & 0x0c; 1382 } 1383 1384 data->vid = lm85_read_value(client, LM85_REG_VID); 1385 1386 for (i = 0; i <= 3; ++i) { 1387 data->in[i] = 1388 lm85_read_value(client, LM85_REG_IN(i)); 1389 data->fan[i] = 1390 lm85_read_value(client, LM85_REG_FAN(i)); 1391 } 1392 1393 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1394 data->in[4] = lm85_read_value(client, 1395 LM85_REG_IN(4)); 1396 } 1397 1398 for (i = 0; i <= 2; ++i) { 1399 data->temp[i] = 1400 lm85_read_value(client, LM85_REG_TEMP(i)); 1401 data->pwm[i] = 1402 lm85_read_value(client, LM85_REG_PWM(i)); 1403 } 1404 1405 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1406 1407 if (data->type == emc6d100) { 1408 /* Three more voltage sensors */ 1409 for (i = 5; i <= 7; ++i) { 1410 data->in[i] = lm85_read_value(client, 1411 EMC6D100_REG_IN(i)); 1412 } 1413 /* More alarm bits */ 1414 data->alarms |= lm85_read_value(client, 1415 EMC6D100_REG_ALARM3) << 16; 1416 } else if (data->type == emc6d102) { 1417 /* Have to read LSB bits after the MSB ones because 1418 the reading of the MSB bits has frozen the 1419 LSBs (backward from the ADM1027). 1420 */ 1421 int ext1 = lm85_read_value(client, 1422 EMC6D102_REG_EXTEND_ADC1); 1423 int ext2 = lm85_read_value(client, 1424 EMC6D102_REG_EXTEND_ADC2); 1425 int ext3 = lm85_read_value(client, 1426 EMC6D102_REG_EXTEND_ADC3); 1427 int ext4 = lm85_read_value(client, 1428 EMC6D102_REG_EXTEND_ADC4); 1429 data->in_ext[0] = ext3 & 0x0f; 1430 data->in_ext[1] = ext4 & 0x0f; 1431 data->in_ext[2] = ext4 >> 4; 1432 data->in_ext[3] = ext3 >> 4; 1433 data->in_ext[4] = ext2 >> 4; 1434 1435 data->temp_ext[0] = ext1 & 0x0f; 1436 data->temp_ext[1] = ext2 & 0x0f; 1437 data->temp_ext[2] = ext1 >> 4; 1438 } 1439 1440 data->last_reading = jiffies; 1441 } /* last_reading */ 1442 1443 if (!data->valid || 1444 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) { 1445 /* Things that don't change often */ 1446 dev_dbg(&client->dev, "Reading config values\n"); 1447 1448 for (i = 0; i <= 3; ++i) { 1449 data->in_min[i] = 1450 lm85_read_value(client, LM85_REG_IN_MIN(i)); 1451 data->in_max[i] = 1452 lm85_read_value(client, LM85_REG_IN_MAX(i)); 1453 data->fan_min[i] = 1454 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1455 } 1456 1457 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1458 data->in_min[4] = lm85_read_value(client, 1459 LM85_REG_IN_MIN(4)); 1460 data->in_max[4] = lm85_read_value(client, 1461 LM85_REG_IN_MAX(4)); 1462 } 1463 1464 if (data->type == emc6d100) { 1465 for (i = 5; i <= 7; ++i) { 1466 data->in_min[i] = lm85_read_value(client, 1467 EMC6D100_REG_IN_MIN(i)); 1468 data->in_max[i] = lm85_read_value(client, 1469 EMC6D100_REG_IN_MAX(i)); 1470 } 1471 } 1472 1473 for (i = 0; i <= 2; ++i) { 1474 int val; 1475 1476 data->temp_min[i] = 1477 lm85_read_value(client, LM85_REG_TEMP_MIN(i)); 1478 data->temp_max[i] = 1479 lm85_read_value(client, LM85_REG_TEMP_MAX(i)); 1480 1481 data->autofan[i].config = 1482 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1483 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1484 data->autofan[i].freq = val & 0x07; 1485 data->zone[i].range = val >> 4; 1486 data->autofan[i].min_pwm = 1487 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1488 data->zone[i].limit = 1489 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1490 data->zone[i].critical = 1491 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1492 } 1493 1494 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1495 data->autofan[0].min_off = (i & 0x20) != 0; 1496 data->autofan[1].min_off = (i & 0x40) != 0; 1497 data->autofan[2].min_off = (i & 0x80) != 0; 1498 1499 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1500 data->zone[0].hyst = i >> 4; 1501 data->zone[1].hyst = i & 0x0f; 1502 1503 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1504 data->zone[2].hyst = i >> 4; 1505 1506 data->last_config = jiffies; 1507 } /* last_config */ 1508 1509 data->valid = 1; 1510 1511 mutex_unlock(&data->update_lock); 1512 1513 return data; 1514 } 1515 1516 1517 static int __init sm_lm85_init(void) 1518 { 1519 return i2c_add_driver(&lm85_driver); 1520 } 1521 1522 static void __exit sm_lm85_exit(void) 1523 { 1524 i2c_del_driver(&lm85_driver); 1525 } 1526 1527 MODULE_LICENSE("GPL"); 1528 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, " 1529 "Margit Schubert-While <margitsw@t-online.de>, " 1530 "Justin Thiessen <jthiessen@penguincomputing.com>"); 1531 MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1532 1533 module_init(sm_lm85_init); 1534 module_exit(sm_lm85_exit); 1535