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/err.h> 34#include <linux/mutex.h> 35 36/* Addresses to scan */ 37static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 38 39/* Insmod parameters */ 40I2C_CLIENT_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102); 41 42/* The LM85 registers */ 43 44#define LM85_REG_IN(nr) (0x20 + (nr)) 45#define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2) 46#define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2) 47 48#define LM85_REG_TEMP(nr) (0x25 + (nr)) 49#define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2) 50#define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2) 51 52/* Fan speeds are LSB, MSB (2 bytes) */ 53#define LM85_REG_FAN(nr) (0x28 + (nr) *2) 54#define LM85_REG_FAN_MIN(nr) (0x54 + (nr) *2) 55 56#define LM85_REG_PWM(nr) (0x30 + (nr)) 57 58#define ADT7463_REG_OPPOINT(nr) (0x33 + (nr)) 59 60#define ADT7463_REG_TMIN_CTL1 0x36 61#define ADT7463_REG_TMIN_CTL2 0x37 62 63#define LM85_REG_DEVICE 0x3d 64#define LM85_REG_COMPANY 0x3e 65#define LM85_REG_VERSTEP 0x3f 66/* These are the recognized values for the above regs */ 67#define LM85_DEVICE_ADX 0x27 68#define LM85_COMPANY_NATIONAL 0x01 69#define LM85_COMPANY_ANALOG_DEV 0x41 70#define LM85_COMPANY_SMSC 0x5c 71#define LM85_VERSTEP_VMASK 0xf0 72#define LM85_VERSTEP_GENERIC 0x60 73#define LM85_VERSTEP_LM85C 0x60 74#define LM85_VERSTEP_LM85B 0x62 75#define LM85_VERSTEP_ADM1027 0x60 76#define LM85_VERSTEP_ADT7463 0x62 77#define LM85_VERSTEP_ADT7463C 0x6A 78#define LM85_VERSTEP_EMC6D100_A0 0x60 79#define LM85_VERSTEP_EMC6D100_A1 0x61 80#define LM85_VERSTEP_EMC6D102 0x65 81 82#define LM85_REG_CONFIG 0x40 83 84#define LM85_REG_ALARM1 0x41 85#define LM85_REG_ALARM2 0x42 86 87#define LM85_REG_VID 0x43 88 89/* Automated FAN control */ 90#define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr)) 91#define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr)) 92#define LM85_REG_AFAN_SPIKE1 0x62 93#define LM85_REG_AFAN_SPIKE2 0x63 94#define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr)) 95#define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr)) 96#define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr)) 97#define LM85_REG_AFAN_HYST1 0x6d 98#define LM85_REG_AFAN_HYST2 0x6e 99 100#define LM85_REG_TACH_MODE 0x74 101#define LM85_REG_SPINUP_CTL 0x75 102 103#define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr)) 104#define ADM1027_REG_CONFIG2 0x73 105#define ADM1027_REG_INTMASK1 0x74 106#define ADM1027_REG_INTMASK2 0x75 107#define ADM1027_REG_EXTEND_ADC1 0x76 108#define ADM1027_REG_EXTEND_ADC2 0x77 109#define ADM1027_REG_CONFIG3 0x78 110#define ADM1027_REG_FAN_PPR 0x7b 111 112#define ADT7463_REG_THERM 0x79 113#define ADT7463_REG_THERM_LIMIT 0x7A 114 115#define EMC6D100_REG_ALARM3 0x7d 116/* IN5, IN6 and IN7 */ 117#define EMC6D100_REG_IN(nr) (0x70 + ((nr)-5)) 118#define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr)-5) * 2) 119#define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr)-5) * 2) 120#define EMC6D102_REG_EXTEND_ADC1 0x85 121#define EMC6D102_REG_EXTEND_ADC2 0x86 122#define EMC6D102_REG_EXTEND_ADC3 0x87 123#define EMC6D102_REG_EXTEND_ADC4 0x88 124 125#define LM85_ALARM_IN0 0x0001 126#define LM85_ALARM_IN1 0x0002 127#define LM85_ALARM_IN2 0x0004 128#define LM85_ALARM_IN3 0x0008 129#define LM85_ALARM_TEMP1 0x0010 130#define LM85_ALARM_TEMP2 0x0020 131#define LM85_ALARM_TEMP3 0x0040 132#define LM85_ALARM_ALARM2 0x0080 133#define LM85_ALARM_IN4 0x0100 134#define LM85_ALARM_RESERVED 0x0200 135#define LM85_ALARM_FAN1 0x0400 136#define LM85_ALARM_FAN2 0x0800 137#define LM85_ALARM_FAN3 0x1000 138#define LM85_ALARM_FAN4 0x2000 139#define LM85_ALARM_TEMP1_FAULT 0x4000 140#define LM85_ALARM_TEMP3_FAULT 0x8000 141 142 143/* Conversions. Rounding and limit checking is only done on the TO_REG 144 variants. Note that you should be a bit careful with which arguments 145 these macros are called: arguments may be evaluated more than once. 146 */ 147 148/* IN are scaled acording to built-in resistors */ 149static int lm85_scaling[] = { /* .001 Volts */ 150 2500, 2250, 3300, 5000, 12000, 151 3300, 1500, 1800 /*EMC6D100*/ 152 }; 153#define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from)) 154 155#define INS_TO_REG(n,val) \ 156 SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255) 157 158#define INSEXT_FROM_REG(n,val,ext,scale) \ 159 SCALE((val)*(scale) + (ext),192*(scale),lm85_scaling[n]) 160 161#define INS_FROM_REG(n,val) INSEXT_FROM_REG(n,val,0,1) 162 163/* FAN speed is measured using 90kHz clock */ 164#define FAN_TO_REG(val) (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534)) 165#define FAN_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:5400000/(val)) 166 167/* Temperature is reported in .001 degC increments */ 168#define TEMP_TO_REG(val) \ 169 SENSORS_LIMIT(SCALE(val,1000,1),-127,127) 170#define TEMPEXT_FROM_REG(val,ext,scale) \ 171 SCALE((val)*scale + (ext),scale,1000) 172#define TEMP_FROM_REG(val) \ 173 TEMPEXT_FROM_REG(val,0,1) 174 175#define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255)) 176#define PWM_FROM_REG(val) (val) 177 178 179/* ZONEs have the following parameters: 180 * Limit (low) temp, 1. degC 181 * Hysteresis (below limit), 1. degC (0-15) 182 * Range of speed control, .1 degC (2-80) 183 * Critical (high) temp, 1. degC 184 * 185 * FAN PWMs have the following parameters: 186 * Reference Zone, 1, 2, 3, etc. 187 * Spinup time, .05 sec 188 * PWM value at limit/low temp, 1 count 189 * PWM Frequency, 1. Hz 190 * PWM is Min or OFF below limit, flag 191 * Invert PWM output, flag 192 * 193 * Some chips filter the temp, others the fan. 194 * Filter constant (or disabled) .1 seconds 195 */ 196 197/* These are the zone temperature range encodings in .001 degree C */ 198static int lm85_range_map[] = { 199 2000, 2500, 3300, 4000, 5000, 6600, 200 8000, 10000, 13300, 16000, 20000, 26600, 201 32000, 40000, 53300, 80000 202 }; 203static int RANGE_TO_REG( int range ) 204{ 205 int i; 206 207 if ( range < lm85_range_map[0] ) { 208 return 0 ; 209 } else if ( range > lm85_range_map[15] ) { 210 return 15 ; 211 } else { /* find closest match */ 212 for ( i = 14 ; i >= 0 ; --i ) { 213 if ( range > lm85_range_map[i] ) { /* range bracketed */ 214 if ((lm85_range_map[i+1] - range) < 215 (range - lm85_range_map[i])) { 216 i++; 217 break; 218 } 219 break; 220 } 221 } 222 } 223 return( i & 0x0f ); 224} 225#define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f]) 226 227/* These are the Acoustic Enhancement, or Temperature smoothing encodings 228 * NOTE: The enable/disable bit is INCLUDED in these encodings as the 229 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value 230 * is ignored, or set to 0. 231 */ 232/* These are the PWM frequency encodings */ 233static int lm85_freq_map[] = { /* .1 Hz */ 234 100, 150, 230, 300, 380, 470, 620, 940 235 }; 236static int FREQ_TO_REG( int freq ) 237{ 238 int i; 239 240 if( freq >= lm85_freq_map[7] ) { return 7 ; } 241 for( i = 0 ; i < 7 ; ++i ) 242 if( freq <= lm85_freq_map[i] ) 243 break ; 244 return( i & 0x07 ); 245} 246#define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07]) 247 248/* Since we can't use strings, I'm abusing these numbers 249 * to stand in for the following meanings: 250 * 1 -- PWM responds to Zone 1 251 * 2 -- PWM responds to Zone 2 252 * 3 -- PWM responds to Zone 3 253 * 23 -- PWM responds to the higher temp of Zone 2 or 3 254 * 123 -- PWM responds to highest of Zone 1, 2, or 3 255 * 0 -- PWM is always at 0% (ie, off) 256 * -1 -- PWM is always at 100% 257 * -2 -- PWM responds to manual control 258 */ 259 260static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 }; 261#define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07]) 262 263static int ZONE_TO_REG( int zone ) 264{ 265 int i; 266 267 for( i = 0 ; i <= 7 ; ++i ) 268 if( zone == lm85_zone_map[i] ) 269 break ; 270 if( i > 7 ) /* Not found. */ 271 i = 3; /* Always 100% */ 272 return( (i & 0x07)<<5 ); 273} 274 275#define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15)) 276#define HYST_FROM_REG(val) ((val)*1000) 277 278#define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127)) 279#define OFFSET_FROM_REG(val) ((val)*25) 280 281#define PPR_MASK(fan) (0x03<<(fan *2)) 282#define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2)) 283#define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1) 284 285/* Chip sampling rates 286 * 287 * Some sensors are not updated more frequently than once per second 288 * so it doesn't make sense to read them more often than that. 289 * We cache the results and return the saved data if the driver 290 * is called again before a second has elapsed. 291 * 292 * Also, there is significant configuration data for this chip 293 * given the automatic PWM fan control that is possible. There 294 * are about 47 bytes of config data to only 22 bytes of actual 295 * readings. So, we keep the config data up to date in the cache 296 * when it is written and only sample it once every 1 *minute* 297 */ 298#define LM85_DATA_INTERVAL (HZ + HZ / 2) 299#define LM85_CONFIG_INTERVAL (1 * 60 * HZ) 300 301/* LM85 can automatically adjust fan speeds based on temperature 302 * This structure encapsulates an entire Zone config. There are 303 * three zones (one for each temperature input) on the lm85 304 */ 305struct lm85_zone { 306 s8 limit; /* Low temp limit */ 307 u8 hyst; /* Low limit hysteresis. (0-15) */ 308 u8 range; /* Temp range, encoded */ 309 s8 critical; /* "All fans ON" temp limit */ 310 u8 off_desired; /* Actual "off" temperature specified. Preserved 311 * to prevent "drift" as other autofan control 312 * values change. 313 */ 314 u8 max_desired; /* Actual "max" temperature specified. Preserved 315 * to prevent "drift" as other autofan control 316 * values change. 317 */ 318}; 319 320struct lm85_autofan { 321 u8 config; /* Register value */ 322 u8 freq; /* PWM frequency, encoded */ 323 u8 min_pwm; /* Minimum PWM value, encoded */ 324 u8 min_off; /* Min PWM or OFF below "limit", flag */ 325}; 326 327/* For each registered chip, we need to keep some data in memory. 328 The structure is dynamically allocated. */ 329struct lm85_data { 330 struct i2c_client client; 331 struct class_device *class_dev; 332 enum chips type; 333 334 struct mutex update_lock; 335 int valid; /* !=0 if following fields are valid */ 336 unsigned long last_reading; /* In jiffies */ 337 unsigned long last_config; /* In jiffies */ 338 339 u8 in[8]; /* Register value */ 340 u8 in_max[8]; /* Register value */ 341 u8 in_min[8]; /* Register value */ 342 s8 temp[3]; /* Register value */ 343 s8 temp_min[3]; /* Register value */ 344 s8 temp_max[3]; /* Register value */ 345 s8 temp_offset[3]; /* Register value */ 346 u16 fan[4]; /* Register value */ 347 u16 fan_min[4]; /* Register value */ 348 u8 pwm[3]; /* Register value */ 349 u8 spinup_ctl; /* Register encoding, combined */ 350 u8 tach_mode; /* Register encoding, combined */ 351 u8 temp_ext[3]; /* Decoded values */ 352 u8 in_ext[8]; /* Decoded values */ 353 u8 adc_scale; /* ADC Extended bits scaling factor */ 354 u8 fan_ppr; /* Register value */ 355 u8 smooth[3]; /* Register encoding */ 356 u8 vid; /* Register value */ 357 u8 vrm; /* VRM version */ 358 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */ 359 u8 oppoint[3]; /* Register value */ 360 u16 tmin_ctl; /* Register value */ 361 unsigned long therm_total; /* Cummulative therm count */ 362 u8 therm_limit; /* Register value */ 363 u32 alarms; /* Register encoding, combined */ 364 struct lm85_autofan autofan[3]; 365 struct lm85_zone zone[3]; 366}; 367 368static int lm85_attach_adapter(struct i2c_adapter *adapter); 369static int lm85_detect(struct i2c_adapter *adapter, int address, 370 int kind); 371static int lm85_detach_client(struct i2c_client *client); 372 373static int lm85_read_value(struct i2c_client *client, u8 reg); 374static int lm85_write_value(struct i2c_client *client, u8 reg, int value); 375static struct lm85_data *lm85_update_device(struct device *dev); 376static void lm85_init_client(struct i2c_client *client); 377 378 379static struct i2c_driver lm85_driver = { 380 .driver = { 381 .name = "lm85", 382 }, 383 .id = I2C_DRIVERID_LM85, 384 .attach_adapter = lm85_attach_adapter, 385 .detach_client = lm85_detach_client, 386}; 387 388 389/* 4 Fans */ 390static ssize_t show_fan(struct device *dev, char *buf, int nr) 391{ 392 struct lm85_data *data = lm85_update_device(dev); 393 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) ); 394} 395static ssize_t show_fan_min(struct device *dev, char *buf, int nr) 396{ 397 struct lm85_data *data = lm85_update_device(dev); 398 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) ); 399} 400static ssize_t set_fan_min(struct device *dev, const char *buf, 401 size_t count, int nr) 402{ 403 struct i2c_client *client = to_i2c_client(dev); 404 struct lm85_data *data = i2c_get_clientdata(client); 405 long val = simple_strtol(buf, NULL, 10); 406 407 mutex_lock(&data->update_lock); 408 data->fan_min[nr] = FAN_TO_REG(val); 409 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); 410 mutex_unlock(&data->update_lock); 411 return count; 412} 413 414#define show_fan_offset(offset) \ 415static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 416{ \ 417 return show_fan(dev, buf, offset - 1); \ 418} \ 419static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 420{ \ 421 return show_fan_min(dev, buf, offset - 1); \ 422} \ 423static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ 424 const char *buf, size_t count) \ 425{ \ 426 return set_fan_min(dev, buf, count, offset - 1); \ 427} \ 428static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \ 429 NULL); \ 430static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 431 show_fan_##offset##_min, set_fan_##offset##_min); 432 433show_fan_offset(1); 434show_fan_offset(2); 435show_fan_offset(3); 436show_fan_offset(4); 437 438/* vid, vrm, alarms */ 439 440static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) 441{ 442 struct lm85_data *data = lm85_update_device(dev); 443 int vid; 444 445 if (data->type == adt7463 && (data->vid & 0x80)) { 446 /* 6-pin VID (VRM 10) */ 447 vid = vid_from_reg(data->vid & 0x3f, data->vrm); 448 } else { 449 /* 5-pin VID (VRM 9) */ 450 vid = vid_from_reg(data->vid & 0x1f, data->vrm); 451 } 452 453 return sprintf(buf, "%d\n", vid); 454} 455 456static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 457 458static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) 459{ 460 struct lm85_data *data = lm85_update_device(dev); 461 return sprintf(buf, "%ld\n", (long) data->vrm); 462} 463 464static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 465{ 466 struct i2c_client *client = to_i2c_client(dev); 467 struct lm85_data *data = i2c_get_clientdata(client); 468 u32 val; 469 470 val = simple_strtoul(buf, NULL, 10); 471 data->vrm = val; 472 return count; 473} 474 475static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 476 477static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf) 478{ 479 struct lm85_data *data = lm85_update_device(dev); 480 return sprintf(buf, "%u\n", data->alarms); 481} 482 483static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 484 485/* pwm */ 486 487static ssize_t show_pwm(struct device *dev, char *buf, int nr) 488{ 489 struct lm85_data *data = lm85_update_device(dev); 490 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) ); 491} 492static ssize_t set_pwm(struct device *dev, const char *buf, 493 size_t count, int nr) 494{ 495 struct i2c_client *client = to_i2c_client(dev); 496 struct lm85_data *data = i2c_get_clientdata(client); 497 long val = simple_strtol(buf, NULL, 10); 498 499 mutex_lock(&data->update_lock); 500 data->pwm[nr] = PWM_TO_REG(val); 501 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 502 mutex_unlock(&data->update_lock); 503 return count; 504} 505static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr) 506{ 507 struct lm85_data *data = lm85_update_device(dev); 508 int pwm_zone; 509 510 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 511 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) ); 512} 513 514#define show_pwm_reg(offset) \ 515static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 516{ \ 517 return show_pwm(dev, buf, offset - 1); \ 518} \ 519static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \ 520 const char *buf, size_t count) \ 521{ \ 522 return set_pwm(dev, buf, count, offset - 1); \ 523} \ 524static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 525{ \ 526 return show_pwm_enable(dev, buf, offset - 1); \ 527} \ 528static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 529 show_pwm_##offset, set_pwm_##offset); \ 530static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \ 531 show_pwm_enable##offset, NULL); 532 533show_pwm_reg(1); 534show_pwm_reg(2); 535show_pwm_reg(3); 536 537/* Voltages */ 538 539static ssize_t show_in(struct device *dev, char *buf, int nr) 540{ 541 struct lm85_data *data = lm85_update_device(dev); 542 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr, 543 data->in[nr], 544 data->in_ext[nr], 545 data->adc_scale) ); 546} 547static ssize_t show_in_min(struct device *dev, char *buf, int nr) 548{ 549 struct lm85_data *data = lm85_update_device(dev); 550 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) ); 551} 552static ssize_t set_in_min(struct device *dev, const char *buf, 553 size_t count, int nr) 554{ 555 struct i2c_client *client = to_i2c_client(dev); 556 struct lm85_data *data = i2c_get_clientdata(client); 557 long val = simple_strtol(buf, NULL, 10); 558 559 mutex_lock(&data->update_lock); 560 data->in_min[nr] = INS_TO_REG(nr, val); 561 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 562 mutex_unlock(&data->update_lock); 563 return count; 564} 565static ssize_t show_in_max(struct device *dev, char *buf, int nr) 566{ 567 struct lm85_data *data = lm85_update_device(dev); 568 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) ); 569} 570static ssize_t set_in_max(struct device *dev, const char *buf, 571 size_t count, int nr) 572{ 573 struct i2c_client *client = to_i2c_client(dev); 574 struct lm85_data *data = i2c_get_clientdata(client); 575 long val = simple_strtol(buf, NULL, 10); 576 577 mutex_lock(&data->update_lock); 578 data->in_max[nr] = INS_TO_REG(nr, val); 579 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 580 mutex_unlock(&data->update_lock); 581 return count; 582} 583#define show_in_reg(offset) \ 584static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 585{ \ 586 return show_in(dev, buf, offset); \ 587} \ 588static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 589{ \ 590 return show_in_min(dev, buf, offset); \ 591} \ 592static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 593{ \ 594 return show_in_max(dev, buf, offset); \ 595} \ 596static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \ 597 const char *buf, size_t count) \ 598{ \ 599 return set_in_min(dev, buf, count, offset); \ 600} \ 601static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \ 602 const char *buf, size_t count) \ 603{ \ 604 return set_in_max(dev, buf, count, offset); \ 605} \ 606static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \ 607 NULL); \ 608static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 609 show_in_##offset##_min, set_in_##offset##_min); \ 610static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 611 show_in_##offset##_max, set_in_##offset##_max); 612 613show_in_reg(0); 614show_in_reg(1); 615show_in_reg(2); 616show_in_reg(3); 617show_in_reg(4); 618 619/* Temps */ 620 621static ssize_t show_temp(struct device *dev, char *buf, int nr) 622{ 623 struct lm85_data *data = lm85_update_device(dev); 624 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr], 625 data->temp_ext[nr], 626 data->adc_scale) ); 627} 628static ssize_t show_temp_min(struct device *dev, char *buf, int nr) 629{ 630 struct lm85_data *data = lm85_update_device(dev); 631 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) ); 632} 633static ssize_t set_temp_min(struct device *dev, const char *buf, 634 size_t count, int nr) 635{ 636 struct i2c_client *client = to_i2c_client(dev); 637 struct lm85_data *data = i2c_get_clientdata(client); 638 long val = simple_strtol(buf, NULL, 10); 639 640 mutex_lock(&data->update_lock); 641 data->temp_min[nr] = TEMP_TO_REG(val); 642 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 643 mutex_unlock(&data->update_lock); 644 return count; 645} 646static ssize_t show_temp_max(struct device *dev, char *buf, int nr) 647{ 648 struct lm85_data *data = lm85_update_device(dev); 649 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) ); 650} 651static ssize_t set_temp_max(struct device *dev, const char *buf, 652 size_t count, int nr) 653{ 654 struct i2c_client *client = to_i2c_client(dev); 655 struct lm85_data *data = i2c_get_clientdata(client); 656 long val = simple_strtol(buf, NULL, 10); 657 658 mutex_lock(&data->update_lock); 659 data->temp_max[nr] = TEMP_TO_REG(val); 660 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 661 mutex_unlock(&data->update_lock); 662 return count; 663} 664#define show_temp_reg(offset) \ 665static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 666{ \ 667 return show_temp(dev, buf, offset - 1); \ 668} \ 669static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 670{ \ 671 return show_temp_min(dev, buf, offset - 1); \ 672} \ 673static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 674{ \ 675 return show_temp_max(dev, buf, offset - 1); \ 676} \ 677static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \ 678 const char *buf, size_t count) \ 679{ \ 680 return set_temp_min(dev, buf, count, offset - 1); \ 681} \ 682static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \ 683 const char *buf, size_t count) \ 684{ \ 685 return set_temp_max(dev, buf, count, offset - 1); \ 686} \ 687static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \ 688 NULL); \ 689static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 690 show_temp_##offset##_min, set_temp_##offset##_min); \ 691static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 692 show_temp_##offset##_max, set_temp_##offset##_max); 693 694show_temp_reg(1); 695show_temp_reg(2); 696show_temp_reg(3); 697 698 699/* Automatic PWM control */ 700 701static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr) 702{ 703 struct lm85_data *data = lm85_update_device(dev); 704 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config)); 705} 706static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf, 707 size_t count, int nr) 708{ 709 struct i2c_client *client = to_i2c_client(dev); 710 struct lm85_data *data = i2c_get_clientdata(client); 711 long val = simple_strtol(buf, NULL, 10); 712 713 mutex_lock(&data->update_lock); 714 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 715 | ZONE_TO_REG(val) ; 716 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 717 data->autofan[nr].config); 718 mutex_unlock(&data->update_lock); 719 return count; 720} 721static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr) 722{ 723 struct lm85_data *data = lm85_update_device(dev); 724 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 725} 726static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf, 727 size_t count, int nr) 728{ 729 struct i2c_client *client = to_i2c_client(dev); 730 struct lm85_data *data = i2c_get_clientdata(client); 731 long val = simple_strtol(buf, NULL, 10); 732 733 mutex_lock(&data->update_lock); 734 data->autofan[nr].min_pwm = PWM_TO_REG(val); 735 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), 736 data->autofan[nr].min_pwm); 737 mutex_unlock(&data->update_lock); 738 return count; 739} 740static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr) 741{ 742 struct lm85_data *data = lm85_update_device(dev); 743 return sprintf(buf,"%d\n", data->autofan[nr].min_off); 744} 745static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf, 746 size_t count, int nr) 747{ 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); 751 752 mutex_lock(&data->update_lock); 753 data->autofan[nr].min_off = val; 754 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0] 755 | data->syncpwm3 756 | (data->autofan[0].min_off ? 0x20 : 0) 757 | (data->autofan[1].min_off ? 0x40 : 0) 758 | (data->autofan[2].min_off ? 0x80 : 0) 759 ); 760 mutex_unlock(&data->update_lock); 761 return count; 762} 763static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr) 764{ 765 struct lm85_data *data = lm85_update_device(dev); 766 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq)); 767} 768static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf, 769 size_t count, int nr) 770{ 771 struct i2c_client *client = to_i2c_client(dev); 772 struct lm85_data *data = i2c_get_clientdata(client); 773 long val = simple_strtol(buf, NULL, 10); 774 775 mutex_lock(&data->update_lock); 776 data->autofan[nr].freq = FREQ_TO_REG(val); 777 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 778 (data->zone[nr].range << 4) 779 | data->autofan[nr].freq 780 ); 781 mutex_unlock(&data->update_lock); 782 return count; 783} 784#define pwm_auto(offset) \ 785static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 786 char *buf) \ 787{ \ 788 return show_pwm_auto_channels(dev, buf, offset - 1); \ 789} \ 790static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 791 const char *buf, size_t count) \ 792{ \ 793 return set_pwm_auto_channels(dev, buf, count, offset - 1); \ 794} \ 795static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 796 char *buf) \ 797{ \ 798 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \ 799} \ 800static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 801 const char *buf, size_t count) \ 802{ \ 803 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \ 804} \ 805static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 806 char *buf) \ 807{ \ 808 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \ 809} \ 810static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 811 const char *buf, size_t count) \ 812{ \ 813 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \ 814} \ 815static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \ 816 char *buf) \ 817{ \ 818 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \ 819} \ 820static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \ 821 const char *buf, size_t count) \ 822{ \ 823 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \ 824} \ 825static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \ 826 show_pwm##offset##_auto_channels, \ 827 set_pwm##offset##_auto_channels); \ 828static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \ 829 show_pwm##offset##_auto_pwm_min, \ 830 set_pwm##offset##_auto_pwm_min); \ 831static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \ 832 show_pwm##offset##_auto_pwm_minctl, \ 833 set_pwm##offset##_auto_pwm_minctl); \ 834static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \ 835 show_pwm##offset##_auto_pwm_freq, \ 836 set_pwm##offset##_auto_pwm_freq); 837pwm_auto(1); 838pwm_auto(2); 839pwm_auto(3); 840 841/* Temperature settings for automatic PWM control */ 842 843static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr) 844{ 845 struct lm85_data *data = lm85_update_device(dev); 846 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 847 HYST_FROM_REG(data->zone[nr].hyst)); 848} 849static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf, 850 size_t count, int nr) 851{ 852 struct i2c_client *client = to_i2c_client(dev); 853 struct lm85_data *data = i2c_get_clientdata(client); 854 int min; 855 long val = simple_strtol(buf, NULL, 10); 856 857 mutex_lock(&data->update_lock); 858 min = TEMP_FROM_REG(data->zone[nr].limit); 859 data->zone[nr].off_desired = TEMP_TO_REG(val); 860 data->zone[nr].hyst = HYST_TO_REG(min - val); 861 if ( nr == 0 || nr == 1 ) { 862 lm85_write_value(client, LM85_REG_AFAN_HYST1, 863 (data->zone[0].hyst << 4) 864 | data->zone[1].hyst 865 ); 866 } else { 867 lm85_write_value(client, LM85_REG_AFAN_HYST2, 868 (data->zone[2].hyst << 4) 869 ); 870 } 871 mutex_unlock(&data->update_lock); 872 return count; 873} 874static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr) 875{ 876 struct lm85_data *data = lm85_update_device(dev); 877 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) ); 878} 879static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf, 880 size_t count, int nr) 881{ 882 struct i2c_client *client = to_i2c_client(dev); 883 struct lm85_data *data = i2c_get_clientdata(client); 884 long val = simple_strtol(buf, NULL, 10); 885 886 mutex_lock(&data->update_lock); 887 data->zone[nr].limit = TEMP_TO_REG(val); 888 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 889 data->zone[nr].limit); 890 891/* Update temp_auto_max and temp_auto_range */ 892 data->zone[nr].range = RANGE_TO_REG( 893 TEMP_FROM_REG(data->zone[nr].max_desired) - 894 TEMP_FROM_REG(data->zone[nr].limit)); 895 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 896 ((data->zone[nr].range & 0x0f) << 4) 897 | (data->autofan[nr].freq & 0x07)); 898 899/* Update temp_auto_hyst and temp_auto_off */ 900 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 901 data->zone[nr].limit) - TEMP_FROM_REG( 902 data->zone[nr].off_desired)); 903 if ( nr == 0 || nr == 1 ) { 904 lm85_write_value(client, LM85_REG_AFAN_HYST1, 905 (data->zone[0].hyst << 4) 906 | data->zone[1].hyst 907 ); 908 } else { 909 lm85_write_value(client, LM85_REG_AFAN_HYST2, 910 (data->zone[2].hyst << 4) 911 ); 912 } 913 mutex_unlock(&data->update_lock); 914 return count; 915} 916static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr) 917{ 918 struct lm85_data *data = lm85_update_device(dev); 919 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 920 RANGE_FROM_REG(data->zone[nr].range)); 921} 922static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf, 923 size_t count, int nr) 924{ 925 struct i2c_client *client = to_i2c_client(dev); 926 struct lm85_data *data = i2c_get_clientdata(client); 927 int min; 928 long val = simple_strtol(buf, NULL, 10); 929 930 mutex_lock(&data->update_lock); 931 min = TEMP_FROM_REG(data->zone[nr].limit); 932 data->zone[nr].max_desired = TEMP_TO_REG(val); 933 data->zone[nr].range = RANGE_TO_REG( 934 val - min); 935 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 936 ((data->zone[nr].range & 0x0f) << 4) 937 | (data->autofan[nr].freq & 0x07)); 938 mutex_unlock(&data->update_lock); 939 return count; 940} 941static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr) 942{ 943 struct lm85_data *data = lm85_update_device(dev); 944 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 945} 946static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf, 947 size_t count, int nr) 948{ 949 struct i2c_client *client = to_i2c_client(dev); 950 struct lm85_data *data = i2c_get_clientdata(client); 951 long val = simple_strtol(buf, NULL, 10); 952 953 mutex_lock(&data->update_lock); 954 data->zone[nr].critical = TEMP_TO_REG(val); 955 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 956 data->zone[nr].critical); 957 mutex_unlock(&data->update_lock); 958 return count; 959} 960#define temp_auto(offset) \ 961static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 962 char *buf) \ 963{ \ 964 return show_temp_auto_temp_off(dev, buf, offset - 1); \ 965} \ 966static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 967 const char *buf, size_t count) \ 968{ \ 969 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \ 970} \ 971static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 972 char *buf) \ 973{ \ 974 return show_temp_auto_temp_min(dev, buf, offset - 1); \ 975} \ 976static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 977 const char *buf, size_t count) \ 978{ \ 979 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \ 980} \ 981static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 982 char *buf) \ 983{ \ 984 return show_temp_auto_temp_max(dev, buf, offset - 1); \ 985} \ 986static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 987 const char *buf, size_t count) \ 988{ \ 989 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \ 990} \ 991static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 992 char *buf) \ 993{ \ 994 return show_temp_auto_temp_crit(dev, buf, offset - 1); \ 995} \ 996static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 997 const char *buf, size_t count) \ 998{ \ 999 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \ 1000} \ 1001static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \ 1002 show_temp##offset##_auto_temp_off, \ 1003 set_temp##offset##_auto_temp_off); \ 1004static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \ 1005 show_temp##offset##_auto_temp_min, \ 1006 set_temp##offset##_auto_temp_min); \ 1007static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \ 1008 show_temp##offset##_auto_temp_max, \ 1009 set_temp##offset##_auto_temp_max); \ 1010static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \ 1011 show_temp##offset##_auto_temp_crit, \ 1012 set_temp##offset##_auto_temp_crit); 1013temp_auto(1); 1014temp_auto(2); 1015temp_auto(3); 1016 1017static int lm85_attach_adapter(struct i2c_adapter *adapter) 1018{ 1019 if (!(adapter->class & I2C_CLASS_HWMON)) 1020 return 0; 1021 return i2c_probe(adapter, &addr_data, lm85_detect); 1022} 1023 1024static struct attribute *lm85_attributes[] = { 1025 &dev_attr_fan1_input.attr, 1026 &dev_attr_fan2_input.attr, 1027 &dev_attr_fan3_input.attr, 1028 &dev_attr_fan4_input.attr, 1029 &dev_attr_fan1_min.attr, 1030 &dev_attr_fan2_min.attr, 1031 &dev_attr_fan3_min.attr, 1032 &dev_attr_fan4_min.attr, 1033 &dev_attr_pwm1.attr, 1034 &dev_attr_pwm2.attr, 1035 &dev_attr_pwm3.attr, 1036 &dev_attr_pwm1_enable.attr, 1037 &dev_attr_pwm2_enable.attr, 1038 &dev_attr_pwm3_enable.attr, 1039 &dev_attr_in0_input.attr, 1040 &dev_attr_in1_input.attr, 1041 &dev_attr_in2_input.attr, 1042 &dev_attr_in3_input.attr, 1043 &dev_attr_in0_min.attr, 1044 &dev_attr_in1_min.attr, 1045 &dev_attr_in2_min.attr, 1046 &dev_attr_in3_min.attr, 1047 &dev_attr_in0_max.attr, 1048 &dev_attr_in1_max.attr, 1049 &dev_attr_in2_max.attr, 1050 &dev_attr_in3_max.attr, 1051 &dev_attr_temp1_input.attr, 1052 &dev_attr_temp2_input.attr, 1053 &dev_attr_temp3_input.attr, 1054 &dev_attr_temp1_min.attr, 1055 &dev_attr_temp2_min.attr, 1056 &dev_attr_temp3_min.attr, 1057 &dev_attr_temp1_max.attr, 1058 &dev_attr_temp2_max.attr, 1059 &dev_attr_temp3_max.attr, 1060 &dev_attr_vrm.attr, 1061 &dev_attr_cpu0_vid.attr, 1062 &dev_attr_alarms.attr, 1063 &dev_attr_pwm1_auto_channels.attr, 1064 &dev_attr_pwm2_auto_channels.attr, 1065 &dev_attr_pwm3_auto_channels.attr, 1066 &dev_attr_pwm1_auto_pwm_min.attr, 1067 &dev_attr_pwm2_auto_pwm_min.attr, 1068 &dev_attr_pwm3_auto_pwm_min.attr, 1069 &dev_attr_pwm1_auto_pwm_minctl.attr, 1070 &dev_attr_pwm2_auto_pwm_minctl.attr, 1071 &dev_attr_pwm3_auto_pwm_minctl.attr, 1072 &dev_attr_pwm1_auto_pwm_freq.attr, 1073 &dev_attr_pwm2_auto_pwm_freq.attr, 1074 &dev_attr_pwm3_auto_pwm_freq.attr, 1075 &dev_attr_temp1_auto_temp_off.attr, 1076 &dev_attr_temp2_auto_temp_off.attr, 1077 &dev_attr_temp3_auto_temp_off.attr, 1078 &dev_attr_temp1_auto_temp_min.attr, 1079 &dev_attr_temp2_auto_temp_min.attr, 1080 &dev_attr_temp3_auto_temp_min.attr, 1081 &dev_attr_temp1_auto_temp_max.attr, 1082 &dev_attr_temp2_auto_temp_max.attr, 1083 &dev_attr_temp3_auto_temp_max.attr, 1084 &dev_attr_temp1_auto_temp_crit.attr, 1085 &dev_attr_temp2_auto_temp_crit.attr, 1086 &dev_attr_temp3_auto_temp_crit.attr, 1087 1088 NULL 1089}; 1090 1091static const struct attribute_group lm85_group = { 1092 .attrs = lm85_attributes, 1093}; 1094 1095static struct attribute *lm85_attributes_opt[] = { 1096 &dev_attr_in4_input.attr, 1097 &dev_attr_in4_min.attr, 1098 &dev_attr_in4_max.attr, 1099 1100 NULL 1101}; 1102 1103static const struct attribute_group lm85_group_opt = { 1104 .attrs = lm85_attributes_opt, 1105}; 1106 1107static int lm85_detect(struct i2c_adapter *adapter, int address, 1108 int kind) 1109{ 1110 int company, verstep ; 1111 struct i2c_client *new_client = NULL; 1112 struct lm85_data *data; 1113 int err = 0; 1114 const char *type_name = ""; 1115 1116 if (!i2c_check_functionality(adapter, 1117 I2C_FUNC_SMBUS_BYTE_DATA)) { 1118 /* We need to be able to do byte I/O */ 1119 goto ERROR0 ; 1120 }; 1121 1122 /* OK. For now, we presume we have a valid client. We now create the 1123 client structure, even though we cannot fill it completely yet. 1124 But it allows us to access lm85_{read,write}_value. */ 1125 1126 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) { 1127 err = -ENOMEM; 1128 goto ERROR0; 1129 } 1130 1131 new_client = &data->client; 1132 i2c_set_clientdata(new_client, data); 1133 new_client->addr = address; 1134 new_client->adapter = adapter; 1135 new_client->driver = &lm85_driver; 1136 new_client->flags = 0; 1137 1138 /* Now, we do the remaining detection. */ 1139 1140 company = lm85_read_value(new_client, LM85_REG_COMPANY); 1141 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP); 1142 1143 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with" 1144 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n", 1145 i2c_adapter_id(new_client->adapter), new_client->addr, 1146 company, verstep); 1147 1148 /* If auto-detecting, Determine the chip type. */ 1149 if (kind <= 0) { 1150 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n", 1151 i2c_adapter_id(adapter), address ); 1152 if( company == LM85_COMPANY_NATIONAL 1153 && verstep == LM85_VERSTEP_LM85C ) { 1154 kind = lm85c ; 1155 } else if( company == LM85_COMPANY_NATIONAL 1156 && verstep == LM85_VERSTEP_LM85B ) { 1157 kind = lm85b ; 1158 } else if( company == LM85_COMPANY_NATIONAL 1159 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1160 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1161 " Defaulting to LM85.\n", verstep); 1162 kind = any_chip ; 1163 } else if( company == LM85_COMPANY_ANALOG_DEV 1164 && verstep == LM85_VERSTEP_ADM1027 ) { 1165 kind = adm1027 ; 1166 } else if( company == LM85_COMPANY_ANALOG_DEV 1167 && (verstep == LM85_VERSTEP_ADT7463 1168 || verstep == LM85_VERSTEP_ADT7463C) ) { 1169 kind = adt7463 ; 1170 } else if( company == LM85_COMPANY_ANALOG_DEV 1171 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1172 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1173 " Defaulting to Generic LM85.\n", verstep ); 1174 kind = any_chip ; 1175 } else if( company == LM85_COMPANY_SMSC 1176 && (verstep == LM85_VERSTEP_EMC6D100_A0 1177 || verstep == LM85_VERSTEP_EMC6D100_A1) ) { 1178 /* Unfortunately, we can't tell a '100 from a '101 1179 * from the registers. Since a '101 is a '100 1180 * in a package with fewer pins and therefore no 1181 * 3.3V, 1.5V or 1.8V inputs, perhaps if those 1182 * inputs read 0, then it's a '101. 1183 */ 1184 kind = emc6d100 ; 1185 } else if( company == LM85_COMPANY_SMSC 1186 && verstep == LM85_VERSTEP_EMC6D102) { 1187 kind = emc6d102 ; 1188 } else if( company == LM85_COMPANY_SMSC 1189 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1190 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n"); 1191 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x" 1192 " Defaulting to Generic LM85.\n", verstep ); 1193 kind = any_chip ; 1194 } else if( kind == any_chip 1195 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1196 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n"); 1197 /* Leave kind as "any_chip" */ 1198 } else { 1199 dev_dbg(&adapter->dev, "Autodetection failed\n"); 1200 /* Not an LM85 ... */ 1201 if( kind == any_chip ) { /* User used force=x,y */ 1202 dev_err(&adapter->dev, "Generic LM85 Version 6 not" 1203 " found at %d,0x%02x. Try force_lm85c.\n", 1204 i2c_adapter_id(adapter), address ); 1205 } 1206 err = 0 ; 1207 goto ERROR1; 1208 } 1209 } 1210 1211 /* Fill in the chip specific driver values */ 1212 if ( kind == any_chip ) { 1213 type_name = "lm85"; 1214 } else if ( kind == lm85b ) { 1215 type_name = "lm85b"; 1216 } else if ( kind == lm85c ) { 1217 type_name = "lm85c"; 1218 } else if ( kind == adm1027 ) { 1219 type_name = "adm1027"; 1220 } else if ( kind == adt7463 ) { 1221 type_name = "adt7463"; 1222 } else if ( kind == emc6d100){ 1223 type_name = "emc6d100"; 1224 } else if ( kind == emc6d102 ) { 1225 type_name = "emc6d102"; 1226 } 1227 strlcpy(new_client->name, type_name, I2C_NAME_SIZE); 1228 1229 /* Fill in the remaining client fields */ 1230 data->type = kind; 1231 data->valid = 0; 1232 mutex_init(&data->update_lock); 1233 1234 /* Tell the I2C layer a new client has arrived */ 1235 if ((err = i2c_attach_client(new_client))) 1236 goto ERROR1; 1237 1238 /* Set the VRM version */ 1239 data->vrm = vid_which_vrm(); 1240 1241 /* Initialize the LM85 chip */ 1242 lm85_init_client(new_client); 1243 1244 /* Register sysfs hooks */ 1245 if ((err = sysfs_create_group(&new_client->dev.kobj, &lm85_group))) 1246 goto ERROR2; 1247 1248 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used 1249 as a sixth digital VID input rather than an analog input. */ 1250 data->vid = lm85_read_value(new_client, LM85_REG_VID); 1251 if (!(kind == adt7463 && (data->vid & 0x80))) 1252 if ((err = device_create_file(&new_client->dev, 1253 &dev_attr_in4_input)) 1254 || (err = device_create_file(&new_client->dev, 1255 &dev_attr_in4_min)) 1256 || (err = device_create_file(&new_client->dev, 1257 &dev_attr_in4_max))) 1258 goto ERROR3; 1259 1260 data->class_dev = hwmon_device_register(&new_client->dev); 1261 if (IS_ERR(data->class_dev)) { 1262 err = PTR_ERR(data->class_dev); 1263 goto ERROR3; 1264 } 1265 1266 return 0; 1267 1268 /* Error out and cleanup code */ 1269 ERROR3: 1270 sysfs_remove_group(&new_client->dev.kobj, &lm85_group); 1271 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_opt); 1272 ERROR2: 1273 i2c_detach_client(new_client); 1274 ERROR1: 1275 kfree(data); 1276 ERROR0: 1277 return err; 1278} 1279 1280static int lm85_detach_client(struct i2c_client *client) 1281{ 1282 struct lm85_data *data = i2c_get_clientdata(client); 1283 hwmon_device_unregister(data->class_dev); 1284 sysfs_remove_group(&client->dev.kobj, &lm85_group); 1285 sysfs_remove_group(&client->dev.kobj, &lm85_group_opt); 1286 i2c_detach_client(client); 1287 kfree(data); 1288 return 0; 1289} 1290 1291 1292static int lm85_read_value(struct i2c_client *client, u8 reg) 1293{ 1294 int res; 1295 1296 /* What size location is it? */ 1297 switch( reg ) { 1298 case LM85_REG_FAN(0) : /* Read WORD data */ 1299 case LM85_REG_FAN(1) : 1300 case LM85_REG_FAN(2) : 1301 case LM85_REG_FAN(3) : 1302 case LM85_REG_FAN_MIN(0) : 1303 case LM85_REG_FAN_MIN(1) : 1304 case LM85_REG_FAN_MIN(2) : 1305 case LM85_REG_FAN_MIN(3) : 1306 case LM85_REG_ALARM1 : /* Read both bytes at once */ 1307 res = i2c_smbus_read_byte_data(client, reg) & 0xff ; 1308 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ; 1309 break ; 1310 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */ 1311 res = i2c_smbus_read_byte_data(client, reg) << 8 ; 1312 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ; 1313 break ; 1314 default: /* Read BYTE data */ 1315 res = i2c_smbus_read_byte_data(client, reg); 1316 break ; 1317 } 1318 1319 return res ; 1320} 1321 1322static int lm85_write_value(struct i2c_client *client, u8 reg, int value) 1323{ 1324 int res ; 1325 1326 switch( reg ) { 1327 case LM85_REG_FAN(0) : /* Write WORD data */ 1328 case LM85_REG_FAN(1) : 1329 case LM85_REG_FAN(2) : 1330 case LM85_REG_FAN(3) : 1331 case LM85_REG_FAN_MIN(0) : 1332 case LM85_REG_FAN_MIN(1) : 1333 case LM85_REG_FAN_MIN(2) : 1334 case LM85_REG_FAN_MIN(3) : 1335 /* NOTE: ALARM is read only, so not included here */ 1336 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ; 1337 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ; 1338 break ; 1339 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */ 1340 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff); 1341 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ; 1342 break ; 1343 default: /* Write BYTE data */ 1344 res = i2c_smbus_write_byte_data(client, reg, value); 1345 break ; 1346 } 1347 1348 return res ; 1349} 1350 1351static void lm85_init_client(struct i2c_client *client) 1352{ 1353 int value; 1354 struct lm85_data *data = i2c_get_clientdata(client); 1355 1356 dev_dbg(&client->dev, "Initializing device\n"); 1357 1358 /* Warn if part was not "READY" */ 1359 value = lm85_read_value(client, LM85_REG_CONFIG); 1360 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value); 1361 if( value & 0x02 ) { 1362 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n", 1363 i2c_adapter_id(client->adapter), client->addr ); 1364 }; 1365 if( ! (value & 0x04) ) { 1366 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n", 1367 i2c_adapter_id(client->adapter), client->addr ); 1368 }; 1369 if( value & 0x10 1370 && ( data->type == adm1027 1371 || data->type == adt7463 ) ) { 1372 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. " 1373 "Please report this to the lm85 maintainer.\n", 1374 i2c_adapter_id(client->adapter), client->addr ); 1375 }; 1376 1377 /* WE INTENTIONALLY make no changes to the limits, 1378 * offsets, pwms, fans and zones. If they were 1379 * configured, we don't want to mess with them. 1380 * If they weren't, the default is 100% PWM, no 1381 * control and will suffice until 'sensors -s' 1382 * can be run by the user. 1383 */ 1384 1385 /* Start monitoring */ 1386 value = lm85_read_value(client, LM85_REG_CONFIG); 1387 /* Try to clear LOCK, Set START, save everything else */ 1388 value = (value & ~ 0x02) | 0x01 ; 1389 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value); 1390 lm85_write_value(client, LM85_REG_CONFIG, value); 1391} 1392 1393static struct lm85_data *lm85_update_device(struct device *dev) 1394{ 1395 struct i2c_client *client = to_i2c_client(dev); 1396 struct lm85_data *data = i2c_get_clientdata(client); 1397 int i; 1398 1399 mutex_lock(&data->update_lock); 1400 1401 if ( !data->valid || 1402 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) { 1403 /* Things that change quickly */ 1404 dev_dbg(&client->dev, "Reading sensor values\n"); 1405 1406 /* Have to read extended bits first to "freeze" the 1407 * more significant bits that are read later. 1408 */ 1409 if ( (data->type == adm1027) || (data->type == adt7463) ) { 1410 int ext1 = lm85_read_value(client, 1411 ADM1027_REG_EXTEND_ADC1); 1412 int ext2 = lm85_read_value(client, 1413 ADM1027_REG_EXTEND_ADC2); 1414 int val = (ext1 << 8) + ext2; 1415 1416 for(i = 0; i <= 4; i++) 1417 data->in_ext[i] = (val>>(i * 2))&0x03; 1418 1419 for(i = 0; i <= 2; i++) 1420 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03; 1421 } 1422 1423 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in 1424 the emc6d102 and 2 in the adt7463 and adm1027. In all 1425 other chips ext is always 0 and the value of scale is 1426 irrelevant. So it is left in 4*/ 1427 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4; 1428 1429 data->vid = lm85_read_value(client, LM85_REG_VID); 1430 1431 for (i = 0; i <= 3; ++i) { 1432 data->in[i] = 1433 lm85_read_value(client, LM85_REG_IN(i)); 1434 } 1435 1436 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1437 data->in[4] = lm85_read_value(client, 1438 LM85_REG_IN(4)); 1439 } 1440 1441 for (i = 0; i <= 3; ++i) { 1442 data->fan[i] = 1443 lm85_read_value(client, LM85_REG_FAN(i)); 1444 } 1445 1446 for (i = 0; i <= 2; ++i) { 1447 data->temp[i] = 1448 lm85_read_value(client, LM85_REG_TEMP(i)); 1449 } 1450 1451 for (i = 0; i <= 2; ++i) { 1452 data->pwm[i] = 1453 lm85_read_value(client, LM85_REG_PWM(i)); 1454 } 1455 1456 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1457 1458 if ( data->type == adt7463 ) { 1459 if( data->therm_total < ULONG_MAX - 256 ) { 1460 data->therm_total += 1461 lm85_read_value(client, ADT7463_REG_THERM ); 1462 } 1463 } else if ( data->type == emc6d100 ) { 1464 /* Three more voltage sensors */ 1465 for (i = 5; i <= 7; ++i) { 1466 data->in[i] = 1467 lm85_read_value(client, EMC6D100_REG_IN(i)); 1468 } 1469 /* More alarm bits */ 1470 data->alarms |= 1471 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16; 1472 } else if (data->type == emc6d102 ) { 1473 /* Have to read LSB bits after the MSB ones because 1474 the reading of the MSB bits has frozen the 1475 LSBs (backward from the ADM1027). 1476 */ 1477 int ext1 = lm85_read_value(client, 1478 EMC6D102_REG_EXTEND_ADC1); 1479 int ext2 = lm85_read_value(client, 1480 EMC6D102_REG_EXTEND_ADC2); 1481 int ext3 = lm85_read_value(client, 1482 EMC6D102_REG_EXTEND_ADC3); 1483 int ext4 = lm85_read_value(client, 1484 EMC6D102_REG_EXTEND_ADC4); 1485 data->in_ext[0] = ext3 & 0x0f; 1486 data->in_ext[1] = ext4 & 0x0f; 1487 data->in_ext[2] = (ext4 >> 4) & 0x0f; 1488 data->in_ext[3] = (ext3 >> 4) & 0x0f; 1489 data->in_ext[4] = (ext2 >> 4) & 0x0f; 1490 1491 data->temp_ext[0] = ext1 & 0x0f; 1492 data->temp_ext[1] = ext2 & 0x0f; 1493 data->temp_ext[2] = (ext1 >> 4) & 0x0f; 1494 } 1495 1496 data->last_reading = jiffies ; 1497 }; /* last_reading */ 1498 1499 if ( !data->valid || 1500 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) { 1501 /* Things that don't change often */ 1502 dev_dbg(&client->dev, "Reading config values\n"); 1503 1504 for (i = 0; i <= 3; ++i) { 1505 data->in_min[i] = 1506 lm85_read_value(client, LM85_REG_IN_MIN(i)); 1507 data->in_max[i] = 1508 lm85_read_value(client, LM85_REG_IN_MAX(i)); 1509 } 1510 1511 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1512 data->in_min[4] = lm85_read_value(client, 1513 LM85_REG_IN_MIN(4)); 1514 data->in_max[4] = lm85_read_value(client, 1515 LM85_REG_IN_MAX(4)); 1516 } 1517 1518 if ( data->type == emc6d100 ) { 1519 for (i = 5; i <= 7; ++i) { 1520 data->in_min[i] = 1521 lm85_read_value(client, EMC6D100_REG_IN_MIN(i)); 1522 data->in_max[i] = 1523 lm85_read_value(client, EMC6D100_REG_IN_MAX(i)); 1524 } 1525 } 1526 1527 for (i = 0; i <= 3; ++i) { 1528 data->fan_min[i] = 1529 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1530 } 1531 1532 for (i = 0; i <= 2; ++i) { 1533 data->temp_min[i] = 1534 lm85_read_value(client, LM85_REG_TEMP_MIN(i)); 1535 data->temp_max[i] = 1536 lm85_read_value(client, LM85_REG_TEMP_MAX(i)); 1537 } 1538 1539 for (i = 0; i <= 2; ++i) { 1540 int val ; 1541 data->autofan[i].config = 1542 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1543 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1544 data->autofan[i].freq = val & 0x07 ; 1545 data->zone[i].range = (val >> 4) & 0x0f ; 1546 data->autofan[i].min_pwm = 1547 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1548 data->zone[i].limit = 1549 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1550 data->zone[i].critical = 1551 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1552 } 1553 1554 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1555 data->smooth[0] = i & 0x0f ; 1556 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */ 1557 data->autofan[0].min_off = (i & 0x20) != 0 ; 1558 data->autofan[1].min_off = (i & 0x40) != 0 ; 1559 data->autofan[2].min_off = (i & 0x80) != 0 ; 1560 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2); 1561 data->smooth[1] = (i>>4) & 0x0f ; 1562 data->smooth[2] = i & 0x0f ; 1563 1564 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1565 data->zone[0].hyst = (i>>4) & 0x0f ; 1566 data->zone[1].hyst = i & 0x0f ; 1567 1568 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1569 data->zone[2].hyst = (i>>4) & 0x0f ; 1570 1571 if ( (data->type == lm85b) || (data->type == lm85c) ) { 1572 data->tach_mode = lm85_read_value(client, 1573 LM85_REG_TACH_MODE ); 1574 data->spinup_ctl = lm85_read_value(client, 1575 LM85_REG_SPINUP_CTL ); 1576 } else if ( (data->type == adt7463) || (data->type == adm1027) ) { 1577 if ( data->type == adt7463 ) { 1578 for (i = 0; i <= 2; ++i) { 1579 data->oppoint[i] = lm85_read_value(client, 1580 ADT7463_REG_OPPOINT(i) ); 1581 } 1582 data->tmin_ctl = lm85_read_value(client, 1583 ADT7463_REG_TMIN_CTL1 ); 1584 data->therm_limit = lm85_read_value(client, 1585 ADT7463_REG_THERM_LIMIT ); 1586 } 1587 for (i = 0; i <= 2; ++i) { 1588 data->temp_offset[i] = lm85_read_value(client, 1589 ADM1027_REG_TEMP_OFFSET(i) ); 1590 } 1591 data->tach_mode = lm85_read_value(client, 1592 ADM1027_REG_CONFIG3 ); 1593 data->fan_ppr = lm85_read_value(client, 1594 ADM1027_REG_FAN_PPR ); 1595 } 1596 1597 data->last_config = jiffies; 1598 }; /* last_config */ 1599 1600 data->valid = 1; 1601 1602 mutex_unlock(&data->update_lock); 1603 1604 return data; 1605} 1606 1607 1608static int __init sm_lm85_init(void) 1609{ 1610 return i2c_add_driver(&lm85_driver); 1611} 1612 1613static void __exit sm_lm85_exit(void) 1614{ 1615 i2c_del_driver(&lm85_driver); 1616} 1617 1618/* Thanks to Richard Barrington for adding the LM85 to sensors-detect. 1619 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with 1620 * post 2.7.0 CVS changes. 1621 */ 1622MODULE_LICENSE("GPL"); 1623MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com"); 1624MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1625 1626module_init(sm_lm85_init); 1627module_exit(sm_lm85_exit); 1628