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 */ 37 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 38 39 /* Insmod parameters */ 40 I2C_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 */ 149 static 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 */ 198 static int lm85_range_map[] = { 199 2000, 2500, 3300, 4000, 5000, 6600, 200 8000, 10000, 13300, 16000, 20000, 26600, 201 32000, 40000, 53300, 80000 202 }; 203 static 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 */ 233 static int lm85_freq_map[] = { /* .1 Hz */ 234 100, 150, 230, 300, 380, 470, 620, 940 235 }; 236 static 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 */ 259 260 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 }; 261 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07]) 262 263 static 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 /* For each registered LM85, we need to keep some data in memory. That 302 data is pointed to by lm85_list[NR]->data. The structure itself is 303 dynamically allocated, at the same time when a new lm85 client is 304 allocated. */ 305 306 /* LM85 can automatically adjust fan speeds based on temperature 307 * This structure encapsulates an entire Zone config. There are 308 * three zones (one for each temperature input) on the lm85 309 */ 310 struct lm85_zone { 311 s8 limit; /* Low temp limit */ 312 u8 hyst; /* Low limit hysteresis. (0-15) */ 313 u8 range; /* Temp range, encoded */ 314 s8 critical; /* "All fans ON" temp limit */ 315 u8 off_desired; /* Actual "off" temperature specified. Preserved 316 * to prevent "drift" as other autofan control 317 * values change. 318 */ 319 u8 max_desired; /* Actual "max" temperature specified. Preserved 320 * to prevent "drift" as other autofan control 321 * values change. 322 */ 323 }; 324 325 struct lm85_autofan { 326 u8 config; /* Register value */ 327 u8 freq; /* PWM frequency, encoded */ 328 u8 min_pwm; /* Minimum PWM value, encoded */ 329 u8 min_off; /* Min PWM or OFF below "limit", flag */ 330 }; 331 332 struct lm85_data { 333 struct i2c_client client; 334 struct class_device *class_dev; 335 struct mutex lock; 336 enum chips type; 337 338 struct mutex update_lock; 339 int valid; /* !=0 if following fields are valid */ 340 unsigned long last_reading; /* In jiffies */ 341 unsigned long last_config; /* In jiffies */ 342 343 u8 in[8]; /* Register value */ 344 u8 in_max[8]; /* Register value */ 345 u8 in_min[8]; /* Register value */ 346 s8 temp[3]; /* Register value */ 347 s8 temp_min[3]; /* Register value */ 348 s8 temp_max[3]; /* Register value */ 349 s8 temp_offset[3]; /* Register value */ 350 u16 fan[4]; /* Register value */ 351 u16 fan_min[4]; /* Register value */ 352 u8 pwm[3]; /* Register value */ 353 u8 spinup_ctl; /* Register encoding, combined */ 354 u8 tach_mode; /* Register encoding, combined */ 355 u8 temp_ext[3]; /* Decoded values */ 356 u8 in_ext[8]; /* Decoded values */ 357 u8 adc_scale; /* ADC Extended bits scaling factor */ 358 u8 fan_ppr; /* Register value */ 359 u8 smooth[3]; /* Register encoding */ 360 u8 vid; /* Register value */ 361 u8 vrm; /* VRM version */ 362 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */ 363 u8 oppoint[3]; /* Register value */ 364 u16 tmin_ctl; /* Register value */ 365 unsigned long therm_total; /* Cummulative therm count */ 366 u8 therm_limit; /* Register value */ 367 u32 alarms; /* Register encoding, combined */ 368 struct lm85_autofan autofan[3]; 369 struct lm85_zone zone[3]; 370 }; 371 372 static int lm85_attach_adapter(struct i2c_adapter *adapter); 373 static int lm85_detect(struct i2c_adapter *adapter, int address, 374 int kind); 375 static int lm85_detach_client(struct i2c_client *client); 376 377 static int lm85_read_value(struct i2c_client *client, u8 reg); 378 static int lm85_write_value(struct i2c_client *client, u8 reg, int value); 379 static struct lm85_data *lm85_update_device(struct device *dev); 380 static void lm85_init_client(struct i2c_client *client); 381 382 383 static struct i2c_driver lm85_driver = { 384 .driver = { 385 .name = "lm85", 386 }, 387 .id = I2C_DRIVERID_LM85, 388 .attach_adapter = lm85_attach_adapter, 389 .detach_client = lm85_detach_client, 390 }; 391 392 393 /* 4 Fans */ 394 static ssize_t show_fan(struct device *dev, char *buf, int nr) 395 { 396 struct lm85_data *data = lm85_update_device(dev); 397 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) ); 398 } 399 static ssize_t show_fan_min(struct device *dev, char *buf, int nr) 400 { 401 struct lm85_data *data = lm85_update_device(dev); 402 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) ); 403 } 404 static ssize_t set_fan_min(struct device *dev, const char *buf, 405 size_t count, int nr) 406 { 407 struct i2c_client *client = to_i2c_client(dev); 408 struct lm85_data *data = i2c_get_clientdata(client); 409 long val = simple_strtol(buf, NULL, 10); 410 411 mutex_lock(&data->update_lock); 412 data->fan_min[nr] = FAN_TO_REG(val); 413 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); 414 mutex_unlock(&data->update_lock); 415 return count; 416 } 417 418 #define show_fan_offset(offset) \ 419 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 420 { \ 421 return show_fan(dev, buf, offset - 1); \ 422 } \ 423 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 424 { \ 425 return show_fan_min(dev, buf, offset - 1); \ 426 } \ 427 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ 428 const char *buf, size_t count) \ 429 { \ 430 return set_fan_min(dev, buf, count, offset - 1); \ 431 } \ 432 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \ 433 NULL); \ 434 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 435 show_fan_##offset##_min, set_fan_##offset##_min); 436 437 show_fan_offset(1); 438 show_fan_offset(2); 439 show_fan_offset(3); 440 show_fan_offset(4); 441 442 /* vid, vrm, alarms */ 443 444 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) 445 { 446 struct lm85_data *data = lm85_update_device(dev); 447 int vid; 448 449 if (data->type == adt7463 && (data->vid & 0x80)) { 450 /* 6-pin VID (VRM 10) */ 451 vid = vid_from_reg(data->vid & 0x3f, data->vrm); 452 } else { 453 /* 5-pin VID (VRM 9) */ 454 vid = vid_from_reg(data->vid & 0x1f, data->vrm); 455 } 456 457 return sprintf(buf, "%d\n", vid); 458 } 459 460 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 461 462 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) 463 { 464 struct lm85_data *data = lm85_update_device(dev); 465 return sprintf(buf, "%ld\n", (long) data->vrm); 466 } 467 468 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 469 { 470 struct i2c_client *client = to_i2c_client(dev); 471 struct lm85_data *data = i2c_get_clientdata(client); 472 u32 val; 473 474 val = simple_strtoul(buf, NULL, 10); 475 data->vrm = val; 476 return count; 477 } 478 479 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 480 481 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf) 482 { 483 struct lm85_data *data = lm85_update_device(dev); 484 return sprintf(buf, "%u\n", data->alarms); 485 } 486 487 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 488 489 /* pwm */ 490 491 static ssize_t show_pwm(struct device *dev, char *buf, int nr) 492 { 493 struct lm85_data *data = lm85_update_device(dev); 494 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) ); 495 } 496 static ssize_t set_pwm(struct device *dev, const char *buf, 497 size_t count, int nr) 498 { 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); 502 503 mutex_lock(&data->update_lock); 504 data->pwm[nr] = PWM_TO_REG(val); 505 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 506 mutex_unlock(&data->update_lock); 507 return count; 508 } 509 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr) 510 { 511 struct lm85_data *data = lm85_update_device(dev); 512 int pwm_zone; 513 514 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 515 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) ); 516 } 517 518 #define show_pwm_reg(offset) \ 519 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 520 { \ 521 return show_pwm(dev, buf, offset - 1); \ 522 } \ 523 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \ 524 const char *buf, size_t count) \ 525 { \ 526 return set_pwm(dev, buf, count, offset - 1); \ 527 } \ 528 static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 529 { \ 530 return show_pwm_enable(dev, buf, offset - 1); \ 531 } \ 532 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 533 show_pwm_##offset, set_pwm_##offset); \ 534 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \ 535 show_pwm_enable##offset, NULL); 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, char *buf, int nr) 544 { 545 struct lm85_data *data = lm85_update_device(dev); 546 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr, 547 data->in[nr], 548 data->in_ext[nr], 549 data->adc_scale) ); 550 } 551 static ssize_t show_in_min(struct device *dev, char *buf, int nr) 552 { 553 struct lm85_data *data = lm85_update_device(dev); 554 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) ); 555 } 556 static ssize_t set_in_min(struct device *dev, const char *buf, 557 size_t count, int nr) 558 { 559 struct i2c_client *client = to_i2c_client(dev); 560 struct lm85_data *data = i2c_get_clientdata(client); 561 long val = simple_strtol(buf, NULL, 10); 562 563 mutex_lock(&data->update_lock); 564 data->in_min[nr] = INS_TO_REG(nr, val); 565 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 566 mutex_unlock(&data->update_lock); 567 return count; 568 } 569 static ssize_t show_in_max(struct device *dev, char *buf, int nr) 570 { 571 struct lm85_data *data = lm85_update_device(dev); 572 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) ); 573 } 574 static ssize_t set_in_max(struct device *dev, const char *buf, 575 size_t count, int nr) 576 { 577 struct i2c_client *client = to_i2c_client(dev); 578 struct lm85_data *data = i2c_get_clientdata(client); 579 long val = simple_strtol(buf, NULL, 10); 580 581 mutex_lock(&data->update_lock); 582 data->in_max[nr] = INS_TO_REG(nr, val); 583 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 584 mutex_unlock(&data->update_lock); 585 return count; 586 } 587 #define show_in_reg(offset) \ 588 static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 589 { \ 590 return show_in(dev, buf, offset); \ 591 } \ 592 static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 593 { \ 594 return show_in_min(dev, buf, offset); \ 595 } \ 596 static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 597 { \ 598 return show_in_max(dev, buf, offset); \ 599 } \ 600 static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \ 601 const char *buf, size_t count) \ 602 { \ 603 return set_in_min(dev, buf, count, offset); \ 604 } \ 605 static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \ 606 const char *buf, size_t count) \ 607 { \ 608 return set_in_max(dev, buf, count, offset); \ 609 } \ 610 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \ 611 NULL); \ 612 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 613 show_in_##offset##_min, set_in_##offset##_min); \ 614 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 615 show_in_##offset##_max, set_in_##offset##_max); 616 617 show_in_reg(0); 618 show_in_reg(1); 619 show_in_reg(2); 620 show_in_reg(3); 621 show_in_reg(4); 622 623 /* Temps */ 624 625 static ssize_t show_temp(struct device *dev, char *buf, int nr) 626 { 627 struct lm85_data *data = lm85_update_device(dev); 628 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr], 629 data->temp_ext[nr], 630 data->adc_scale) ); 631 } 632 static ssize_t show_temp_min(struct device *dev, char *buf, int nr) 633 { 634 struct lm85_data *data = lm85_update_device(dev); 635 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) ); 636 } 637 static ssize_t set_temp_min(struct device *dev, const char *buf, 638 size_t count, int nr) 639 { 640 struct i2c_client *client = to_i2c_client(dev); 641 struct lm85_data *data = i2c_get_clientdata(client); 642 long val = simple_strtol(buf, NULL, 10); 643 644 mutex_lock(&data->update_lock); 645 data->temp_min[nr] = TEMP_TO_REG(val); 646 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 647 mutex_unlock(&data->update_lock); 648 return count; 649 } 650 static ssize_t show_temp_max(struct device *dev, char *buf, int nr) 651 { 652 struct lm85_data *data = lm85_update_device(dev); 653 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) ); 654 } 655 static ssize_t set_temp_max(struct device *dev, const char *buf, 656 size_t count, int nr) 657 { 658 struct i2c_client *client = to_i2c_client(dev); 659 struct lm85_data *data = i2c_get_clientdata(client); 660 long val = simple_strtol(buf, NULL, 10); 661 662 mutex_lock(&data->update_lock); 663 data->temp_max[nr] = TEMP_TO_REG(val); 664 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 665 mutex_unlock(&data->update_lock); 666 return count; 667 } 668 #define show_temp_reg(offset) \ 669 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 670 { \ 671 return show_temp(dev, buf, offset - 1); \ 672 } \ 673 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 674 { \ 675 return show_temp_min(dev, buf, offset - 1); \ 676 } \ 677 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 678 { \ 679 return show_temp_max(dev, buf, offset - 1); \ 680 } \ 681 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \ 682 const char *buf, size_t count) \ 683 { \ 684 return set_temp_min(dev, buf, count, offset - 1); \ 685 } \ 686 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \ 687 const char *buf, size_t count) \ 688 { \ 689 return set_temp_max(dev, buf, count, offset - 1); \ 690 } \ 691 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \ 692 NULL); \ 693 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 694 show_temp_##offset##_min, set_temp_##offset##_min); \ 695 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 696 show_temp_##offset##_max, set_temp_##offset##_max); 697 698 show_temp_reg(1); 699 show_temp_reg(2); 700 show_temp_reg(3); 701 702 703 /* Automatic PWM control */ 704 705 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr) 706 { 707 struct lm85_data *data = lm85_update_device(dev); 708 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config)); 709 } 710 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf, 711 size_t count, int nr) 712 { 713 struct i2c_client *client = to_i2c_client(dev); 714 struct lm85_data *data = i2c_get_clientdata(client); 715 long val = simple_strtol(buf, NULL, 10); 716 717 mutex_lock(&data->update_lock); 718 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 719 | ZONE_TO_REG(val) ; 720 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 721 data->autofan[nr].config); 722 mutex_unlock(&data->update_lock); 723 return count; 724 } 725 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr) 726 { 727 struct lm85_data *data = lm85_update_device(dev); 728 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 729 } 730 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf, 731 size_t count, int nr) 732 { 733 struct i2c_client *client = to_i2c_client(dev); 734 struct lm85_data *data = i2c_get_clientdata(client); 735 long val = simple_strtol(buf, NULL, 10); 736 737 mutex_lock(&data->update_lock); 738 data->autofan[nr].min_pwm = PWM_TO_REG(val); 739 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), 740 data->autofan[nr].min_pwm); 741 mutex_unlock(&data->update_lock); 742 return count; 743 } 744 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr) 745 { 746 struct lm85_data *data = lm85_update_device(dev); 747 return sprintf(buf,"%d\n", data->autofan[nr].min_off); 748 } 749 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf, 750 size_t count, int nr) 751 { 752 struct i2c_client *client = to_i2c_client(dev); 753 struct lm85_data *data = i2c_get_clientdata(client); 754 long val = simple_strtol(buf, NULL, 10); 755 756 mutex_lock(&data->update_lock); 757 data->autofan[nr].min_off = val; 758 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0] 759 | data->syncpwm3 760 | (data->autofan[0].min_off ? 0x20 : 0) 761 | (data->autofan[1].min_off ? 0x40 : 0) 762 | (data->autofan[2].min_off ? 0x80 : 0) 763 ); 764 mutex_unlock(&data->update_lock); 765 return count; 766 } 767 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr) 768 { 769 struct lm85_data *data = lm85_update_device(dev); 770 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq)); 771 } 772 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf, 773 size_t count, int nr) 774 { 775 struct i2c_client *client = to_i2c_client(dev); 776 struct lm85_data *data = i2c_get_clientdata(client); 777 long val = simple_strtol(buf, NULL, 10); 778 779 mutex_lock(&data->update_lock); 780 data->autofan[nr].freq = FREQ_TO_REG(val); 781 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 782 (data->zone[nr].range << 4) 783 | data->autofan[nr].freq 784 ); 785 mutex_unlock(&data->update_lock); 786 return count; 787 } 788 #define pwm_auto(offset) \ 789 static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 790 char *buf) \ 791 { \ 792 return show_pwm_auto_channels(dev, buf, offset - 1); \ 793 } \ 794 static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 795 const char *buf, size_t count) \ 796 { \ 797 return set_pwm_auto_channels(dev, buf, count, offset - 1); \ 798 } \ 799 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 800 char *buf) \ 801 { \ 802 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \ 803 } \ 804 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 805 const char *buf, size_t count) \ 806 { \ 807 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \ 808 } \ 809 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 810 char *buf) \ 811 { \ 812 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \ 813 } \ 814 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 815 const char *buf, size_t count) \ 816 { \ 817 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \ 818 } \ 819 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \ 820 char *buf) \ 821 { \ 822 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \ 823 } \ 824 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \ 825 const char *buf, size_t count) \ 826 { \ 827 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \ 828 } \ 829 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \ 830 show_pwm##offset##_auto_channels, \ 831 set_pwm##offset##_auto_channels); \ 832 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \ 833 show_pwm##offset##_auto_pwm_min, \ 834 set_pwm##offset##_auto_pwm_min); \ 835 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \ 836 show_pwm##offset##_auto_pwm_minctl, \ 837 set_pwm##offset##_auto_pwm_minctl); \ 838 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \ 839 show_pwm##offset##_auto_pwm_freq, \ 840 set_pwm##offset##_auto_pwm_freq); 841 pwm_auto(1); 842 pwm_auto(2); 843 pwm_auto(3); 844 845 /* Temperature settings for automatic PWM control */ 846 847 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr) 848 { 849 struct lm85_data *data = lm85_update_device(dev); 850 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 851 HYST_FROM_REG(data->zone[nr].hyst)); 852 } 853 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf, 854 size_t count, int nr) 855 { 856 struct i2c_client *client = to_i2c_client(dev); 857 struct lm85_data *data = i2c_get_clientdata(client); 858 int min; 859 long val = simple_strtol(buf, NULL, 10); 860 861 mutex_lock(&data->update_lock); 862 min = TEMP_FROM_REG(data->zone[nr].limit); 863 data->zone[nr].off_desired = TEMP_TO_REG(val); 864 data->zone[nr].hyst = HYST_TO_REG(min - val); 865 if ( nr == 0 || nr == 1 ) { 866 lm85_write_value(client, LM85_REG_AFAN_HYST1, 867 (data->zone[0].hyst << 4) 868 | data->zone[1].hyst 869 ); 870 } else { 871 lm85_write_value(client, LM85_REG_AFAN_HYST2, 872 (data->zone[2].hyst << 4) 873 ); 874 } 875 mutex_unlock(&data->update_lock); 876 return count; 877 } 878 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr) 879 { 880 struct lm85_data *data = lm85_update_device(dev); 881 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) ); 882 } 883 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf, 884 size_t count, int nr) 885 { 886 struct i2c_client *client = to_i2c_client(dev); 887 struct lm85_data *data = i2c_get_clientdata(client); 888 long val = simple_strtol(buf, NULL, 10); 889 890 mutex_lock(&data->update_lock); 891 data->zone[nr].limit = TEMP_TO_REG(val); 892 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 893 data->zone[nr].limit); 894 895 /* Update temp_auto_max and temp_auto_range */ 896 data->zone[nr].range = RANGE_TO_REG( 897 TEMP_FROM_REG(data->zone[nr].max_desired) - 898 TEMP_FROM_REG(data->zone[nr].limit)); 899 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 900 ((data->zone[nr].range & 0x0f) << 4) 901 | (data->autofan[nr].freq & 0x07)); 902 903 /* Update temp_auto_hyst and temp_auto_off */ 904 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 905 data->zone[nr].limit) - TEMP_FROM_REG( 906 data->zone[nr].off_desired)); 907 if ( nr == 0 || nr == 1 ) { 908 lm85_write_value(client, LM85_REG_AFAN_HYST1, 909 (data->zone[0].hyst << 4) 910 | data->zone[1].hyst 911 ); 912 } else { 913 lm85_write_value(client, LM85_REG_AFAN_HYST2, 914 (data->zone[2].hyst << 4) 915 ); 916 } 917 mutex_unlock(&data->update_lock); 918 return count; 919 } 920 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr) 921 { 922 struct lm85_data *data = lm85_update_device(dev); 923 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 924 RANGE_FROM_REG(data->zone[nr].range)); 925 } 926 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf, 927 size_t count, int nr) 928 { 929 struct i2c_client *client = to_i2c_client(dev); 930 struct lm85_data *data = i2c_get_clientdata(client); 931 int min; 932 long val = simple_strtol(buf, NULL, 10); 933 934 mutex_lock(&data->update_lock); 935 min = TEMP_FROM_REG(data->zone[nr].limit); 936 data->zone[nr].max_desired = TEMP_TO_REG(val); 937 data->zone[nr].range = RANGE_TO_REG( 938 val - min); 939 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 940 ((data->zone[nr].range & 0x0f) << 4) 941 | (data->autofan[nr].freq & 0x07)); 942 mutex_unlock(&data->update_lock); 943 return count; 944 } 945 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr) 946 { 947 struct lm85_data *data = lm85_update_device(dev); 948 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 949 } 950 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf, 951 size_t count, int nr) 952 { 953 struct i2c_client *client = to_i2c_client(dev); 954 struct lm85_data *data = i2c_get_clientdata(client); 955 long val = simple_strtol(buf, NULL, 10); 956 957 mutex_lock(&data->update_lock); 958 data->zone[nr].critical = TEMP_TO_REG(val); 959 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 960 data->zone[nr].critical); 961 mutex_unlock(&data->update_lock); 962 return count; 963 } 964 #define temp_auto(offset) \ 965 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 966 char *buf) \ 967 { \ 968 return show_temp_auto_temp_off(dev, buf, offset - 1); \ 969 } \ 970 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 971 const char *buf, size_t count) \ 972 { \ 973 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \ 974 } \ 975 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 976 char *buf) \ 977 { \ 978 return show_temp_auto_temp_min(dev, buf, offset - 1); \ 979 } \ 980 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 981 const char *buf, size_t count) \ 982 { \ 983 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \ 984 } \ 985 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 986 char *buf) \ 987 { \ 988 return show_temp_auto_temp_max(dev, buf, offset - 1); \ 989 } \ 990 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 991 const char *buf, size_t count) \ 992 { \ 993 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \ 994 } \ 995 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 996 char *buf) \ 997 { \ 998 return show_temp_auto_temp_crit(dev, buf, offset - 1); \ 999 } \ 1000 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 1001 const char *buf, size_t count) \ 1002 { \ 1003 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \ 1004 } \ 1005 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \ 1006 show_temp##offset##_auto_temp_off, \ 1007 set_temp##offset##_auto_temp_off); \ 1008 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \ 1009 show_temp##offset##_auto_temp_min, \ 1010 set_temp##offset##_auto_temp_min); \ 1011 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \ 1012 show_temp##offset##_auto_temp_max, \ 1013 set_temp##offset##_auto_temp_max); \ 1014 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \ 1015 show_temp##offset##_auto_temp_crit, \ 1016 set_temp##offset##_auto_temp_crit); 1017 temp_auto(1); 1018 temp_auto(2); 1019 temp_auto(3); 1020 1021 static int lm85_attach_adapter(struct i2c_adapter *adapter) 1022 { 1023 if (!(adapter->class & I2C_CLASS_HWMON)) 1024 return 0; 1025 return i2c_probe(adapter, &addr_data, lm85_detect); 1026 } 1027 1028 static int lm85_detect(struct i2c_adapter *adapter, int address, 1029 int kind) 1030 { 1031 int company, verstep ; 1032 struct i2c_client *new_client = NULL; 1033 struct lm85_data *data; 1034 int err = 0; 1035 const char *type_name = ""; 1036 1037 if (!i2c_check_functionality(adapter, 1038 I2C_FUNC_SMBUS_BYTE_DATA)) { 1039 /* We need to be able to do byte I/O */ 1040 goto ERROR0 ; 1041 }; 1042 1043 /* OK. For now, we presume we have a valid client. We now create the 1044 client structure, even though we cannot fill it completely yet. 1045 But it allows us to access lm85_{read,write}_value. */ 1046 1047 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) { 1048 err = -ENOMEM; 1049 goto ERROR0; 1050 } 1051 1052 new_client = &data->client; 1053 i2c_set_clientdata(new_client, data); 1054 new_client->addr = address; 1055 new_client->adapter = adapter; 1056 new_client->driver = &lm85_driver; 1057 new_client->flags = 0; 1058 1059 /* Now, we do the remaining detection. */ 1060 1061 company = lm85_read_value(new_client, LM85_REG_COMPANY); 1062 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP); 1063 1064 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with" 1065 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n", 1066 i2c_adapter_id(new_client->adapter), new_client->addr, 1067 company, verstep); 1068 1069 /* If auto-detecting, Determine the chip type. */ 1070 if (kind <= 0) { 1071 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n", 1072 i2c_adapter_id(adapter), address ); 1073 if( company == LM85_COMPANY_NATIONAL 1074 && verstep == LM85_VERSTEP_LM85C ) { 1075 kind = lm85c ; 1076 } else if( company == LM85_COMPANY_NATIONAL 1077 && verstep == LM85_VERSTEP_LM85B ) { 1078 kind = lm85b ; 1079 } else if( company == LM85_COMPANY_NATIONAL 1080 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1081 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1082 " Defaulting to LM85.\n", verstep); 1083 kind = any_chip ; 1084 } else if( company == LM85_COMPANY_ANALOG_DEV 1085 && verstep == LM85_VERSTEP_ADM1027 ) { 1086 kind = adm1027 ; 1087 } else if( company == LM85_COMPANY_ANALOG_DEV 1088 && (verstep == LM85_VERSTEP_ADT7463 1089 || verstep == LM85_VERSTEP_ADT7463C) ) { 1090 kind = adt7463 ; 1091 } else if( company == LM85_COMPANY_ANALOG_DEV 1092 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1093 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1094 " Defaulting to Generic LM85.\n", verstep ); 1095 kind = any_chip ; 1096 } else if( company == LM85_COMPANY_SMSC 1097 && (verstep == LM85_VERSTEP_EMC6D100_A0 1098 || verstep == LM85_VERSTEP_EMC6D100_A1) ) { 1099 /* Unfortunately, we can't tell a '100 from a '101 1100 * from the registers. Since a '101 is a '100 1101 * in a package with fewer pins and therefore no 1102 * 3.3V, 1.5V or 1.8V inputs, perhaps if those 1103 * inputs read 0, then it's a '101. 1104 */ 1105 kind = emc6d100 ; 1106 } else if( company == LM85_COMPANY_SMSC 1107 && verstep == LM85_VERSTEP_EMC6D102) { 1108 kind = emc6d102 ; 1109 } else if( company == LM85_COMPANY_SMSC 1110 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1111 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n"); 1112 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x" 1113 " Defaulting to Generic LM85.\n", verstep ); 1114 kind = any_chip ; 1115 } else if( kind == any_chip 1116 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1117 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n"); 1118 /* Leave kind as "any_chip" */ 1119 } else { 1120 dev_dbg(&adapter->dev, "Autodetection failed\n"); 1121 /* Not an LM85 ... */ 1122 if( kind == any_chip ) { /* User used force=x,y */ 1123 dev_err(&adapter->dev, "Generic LM85 Version 6 not" 1124 " found at %d,0x%02x. Try force_lm85c.\n", 1125 i2c_adapter_id(adapter), address ); 1126 } 1127 err = 0 ; 1128 goto ERROR1; 1129 } 1130 } 1131 1132 /* Fill in the chip specific driver values */ 1133 if ( kind == any_chip ) { 1134 type_name = "lm85"; 1135 } else if ( kind == lm85b ) { 1136 type_name = "lm85b"; 1137 } else if ( kind == lm85c ) { 1138 type_name = "lm85c"; 1139 } else if ( kind == adm1027 ) { 1140 type_name = "adm1027"; 1141 } else if ( kind == adt7463 ) { 1142 type_name = "adt7463"; 1143 } else if ( kind == emc6d100){ 1144 type_name = "emc6d100"; 1145 } else if ( kind == emc6d102 ) { 1146 type_name = "emc6d102"; 1147 } 1148 strlcpy(new_client->name, type_name, I2C_NAME_SIZE); 1149 1150 /* Fill in the remaining client fields */ 1151 data->type = kind; 1152 data->valid = 0; 1153 mutex_init(&data->update_lock); 1154 1155 /* Tell the I2C layer a new client has arrived */ 1156 if ((err = i2c_attach_client(new_client))) 1157 goto ERROR1; 1158 1159 /* Set the VRM version */ 1160 data->vrm = vid_which_vrm(); 1161 1162 /* Initialize the LM85 chip */ 1163 lm85_init_client(new_client); 1164 1165 /* Register sysfs hooks */ 1166 data->class_dev = hwmon_device_register(&new_client->dev); 1167 if (IS_ERR(data->class_dev)) { 1168 err = PTR_ERR(data->class_dev); 1169 goto ERROR2; 1170 } 1171 1172 device_create_file(&new_client->dev, &dev_attr_fan1_input); 1173 device_create_file(&new_client->dev, &dev_attr_fan2_input); 1174 device_create_file(&new_client->dev, &dev_attr_fan3_input); 1175 device_create_file(&new_client->dev, &dev_attr_fan4_input); 1176 device_create_file(&new_client->dev, &dev_attr_fan1_min); 1177 device_create_file(&new_client->dev, &dev_attr_fan2_min); 1178 device_create_file(&new_client->dev, &dev_attr_fan3_min); 1179 device_create_file(&new_client->dev, &dev_attr_fan4_min); 1180 device_create_file(&new_client->dev, &dev_attr_pwm1); 1181 device_create_file(&new_client->dev, &dev_attr_pwm2); 1182 device_create_file(&new_client->dev, &dev_attr_pwm3); 1183 device_create_file(&new_client->dev, &dev_attr_pwm1_enable); 1184 device_create_file(&new_client->dev, &dev_attr_pwm2_enable); 1185 device_create_file(&new_client->dev, &dev_attr_pwm3_enable); 1186 device_create_file(&new_client->dev, &dev_attr_in0_input); 1187 device_create_file(&new_client->dev, &dev_attr_in1_input); 1188 device_create_file(&new_client->dev, &dev_attr_in2_input); 1189 device_create_file(&new_client->dev, &dev_attr_in3_input); 1190 device_create_file(&new_client->dev, &dev_attr_in0_min); 1191 device_create_file(&new_client->dev, &dev_attr_in1_min); 1192 device_create_file(&new_client->dev, &dev_attr_in2_min); 1193 device_create_file(&new_client->dev, &dev_attr_in3_min); 1194 device_create_file(&new_client->dev, &dev_attr_in0_max); 1195 device_create_file(&new_client->dev, &dev_attr_in1_max); 1196 device_create_file(&new_client->dev, &dev_attr_in2_max); 1197 device_create_file(&new_client->dev, &dev_attr_in3_max); 1198 device_create_file(&new_client->dev, &dev_attr_temp1_input); 1199 device_create_file(&new_client->dev, &dev_attr_temp2_input); 1200 device_create_file(&new_client->dev, &dev_attr_temp3_input); 1201 device_create_file(&new_client->dev, &dev_attr_temp1_min); 1202 device_create_file(&new_client->dev, &dev_attr_temp2_min); 1203 device_create_file(&new_client->dev, &dev_attr_temp3_min); 1204 device_create_file(&new_client->dev, &dev_attr_temp1_max); 1205 device_create_file(&new_client->dev, &dev_attr_temp2_max); 1206 device_create_file(&new_client->dev, &dev_attr_temp3_max); 1207 device_create_file(&new_client->dev, &dev_attr_vrm); 1208 device_create_file(&new_client->dev, &dev_attr_cpu0_vid); 1209 device_create_file(&new_client->dev, &dev_attr_alarms); 1210 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels); 1211 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels); 1212 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels); 1213 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min); 1214 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min); 1215 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min); 1216 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl); 1217 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl); 1218 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl); 1219 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq); 1220 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq); 1221 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq); 1222 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off); 1223 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off); 1224 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off); 1225 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min); 1226 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min); 1227 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min); 1228 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max); 1229 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max); 1230 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max); 1231 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit); 1232 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit); 1233 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit); 1234 1235 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used 1236 as a sixth digital VID input rather than an analog input. */ 1237 data->vid = lm85_read_value(new_client, LM85_REG_VID); 1238 if (!(kind == adt7463 && (data->vid & 0x80))) { 1239 device_create_file(&new_client->dev, &dev_attr_in4_input); 1240 device_create_file(&new_client->dev, &dev_attr_in4_min); 1241 device_create_file(&new_client->dev, &dev_attr_in4_max); 1242 } 1243 1244 return 0; 1245 1246 /* Error out and cleanup code */ 1247 ERROR2: 1248 i2c_detach_client(new_client); 1249 ERROR1: 1250 kfree(data); 1251 ERROR0: 1252 return err; 1253 } 1254 1255 static int lm85_detach_client(struct i2c_client *client) 1256 { 1257 struct lm85_data *data = i2c_get_clientdata(client); 1258 hwmon_device_unregister(data->class_dev); 1259 i2c_detach_client(client); 1260 kfree(data); 1261 return 0; 1262 } 1263 1264 1265 static int lm85_read_value(struct i2c_client *client, u8 reg) 1266 { 1267 int res; 1268 1269 /* What size location is it? */ 1270 switch( reg ) { 1271 case LM85_REG_FAN(0) : /* Read WORD data */ 1272 case LM85_REG_FAN(1) : 1273 case LM85_REG_FAN(2) : 1274 case LM85_REG_FAN(3) : 1275 case LM85_REG_FAN_MIN(0) : 1276 case LM85_REG_FAN_MIN(1) : 1277 case LM85_REG_FAN_MIN(2) : 1278 case LM85_REG_FAN_MIN(3) : 1279 case LM85_REG_ALARM1 : /* Read both bytes at once */ 1280 res = i2c_smbus_read_byte_data(client, reg) & 0xff ; 1281 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ; 1282 break ; 1283 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */ 1284 res = i2c_smbus_read_byte_data(client, reg) << 8 ; 1285 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ; 1286 break ; 1287 default: /* Read BYTE data */ 1288 res = i2c_smbus_read_byte_data(client, reg); 1289 break ; 1290 } 1291 1292 return res ; 1293 } 1294 1295 static int lm85_write_value(struct i2c_client *client, u8 reg, int value) 1296 { 1297 int res ; 1298 1299 switch( reg ) { 1300 case LM85_REG_FAN(0) : /* Write WORD data */ 1301 case LM85_REG_FAN(1) : 1302 case LM85_REG_FAN(2) : 1303 case LM85_REG_FAN(3) : 1304 case LM85_REG_FAN_MIN(0) : 1305 case LM85_REG_FAN_MIN(1) : 1306 case LM85_REG_FAN_MIN(2) : 1307 case LM85_REG_FAN_MIN(3) : 1308 /* NOTE: ALARM is read only, so not included here */ 1309 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ; 1310 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ; 1311 break ; 1312 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */ 1313 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff); 1314 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ; 1315 break ; 1316 default: /* Write BYTE data */ 1317 res = i2c_smbus_write_byte_data(client, reg, value); 1318 break ; 1319 } 1320 1321 return res ; 1322 } 1323 1324 static void lm85_init_client(struct i2c_client *client) 1325 { 1326 int value; 1327 struct lm85_data *data = i2c_get_clientdata(client); 1328 1329 dev_dbg(&client->dev, "Initializing device\n"); 1330 1331 /* Warn if part was not "READY" */ 1332 value = lm85_read_value(client, LM85_REG_CONFIG); 1333 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value); 1334 if( value & 0x02 ) { 1335 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n", 1336 i2c_adapter_id(client->adapter), client->addr ); 1337 }; 1338 if( ! (value & 0x04) ) { 1339 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n", 1340 i2c_adapter_id(client->adapter), client->addr ); 1341 }; 1342 if( value & 0x10 1343 && ( data->type == adm1027 1344 || data->type == adt7463 ) ) { 1345 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. " 1346 "Please report this to the lm85 maintainer.\n", 1347 i2c_adapter_id(client->adapter), client->addr ); 1348 }; 1349 1350 /* WE INTENTIONALLY make no changes to the limits, 1351 * offsets, pwms, fans and zones. If they were 1352 * configured, we don't want to mess with them. 1353 * If they weren't, the default is 100% PWM, no 1354 * control and will suffice until 'sensors -s' 1355 * can be run by the user. 1356 */ 1357 1358 /* Start monitoring */ 1359 value = lm85_read_value(client, LM85_REG_CONFIG); 1360 /* Try to clear LOCK, Set START, save everything else */ 1361 value = (value & ~ 0x02) | 0x01 ; 1362 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value); 1363 lm85_write_value(client, LM85_REG_CONFIG, value); 1364 } 1365 1366 static struct lm85_data *lm85_update_device(struct device *dev) 1367 { 1368 struct i2c_client *client = to_i2c_client(dev); 1369 struct lm85_data *data = i2c_get_clientdata(client); 1370 int i; 1371 1372 mutex_lock(&data->update_lock); 1373 1374 if ( !data->valid || 1375 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) { 1376 /* Things that change quickly */ 1377 dev_dbg(&client->dev, "Reading sensor values\n"); 1378 1379 /* Have to read extended bits first to "freeze" the 1380 * more significant bits that are read later. 1381 */ 1382 if ( (data->type == adm1027) || (data->type == adt7463) ) { 1383 int ext1 = lm85_read_value(client, 1384 ADM1027_REG_EXTEND_ADC1); 1385 int ext2 = lm85_read_value(client, 1386 ADM1027_REG_EXTEND_ADC2); 1387 int val = (ext1 << 8) + ext2; 1388 1389 for(i = 0; i <= 4; i++) 1390 data->in_ext[i] = (val>>(i * 2))&0x03; 1391 1392 for(i = 0; i <= 2; i++) 1393 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03; 1394 } 1395 1396 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in 1397 the emc6d102 and 2 in the adt7463 and adm1027. In all 1398 other chips ext is always 0 and the value of scale is 1399 irrelevant. So it is left in 4*/ 1400 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4; 1401 1402 data->vid = lm85_read_value(client, LM85_REG_VID); 1403 1404 for (i = 0; i <= 3; ++i) { 1405 data->in[i] = 1406 lm85_read_value(client, LM85_REG_IN(i)); 1407 } 1408 1409 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1410 data->in[4] = lm85_read_value(client, 1411 LM85_REG_IN(4)); 1412 } 1413 1414 for (i = 0; i <= 3; ++i) { 1415 data->fan[i] = 1416 lm85_read_value(client, LM85_REG_FAN(i)); 1417 } 1418 1419 for (i = 0; i <= 2; ++i) { 1420 data->temp[i] = 1421 lm85_read_value(client, LM85_REG_TEMP(i)); 1422 } 1423 1424 for (i = 0; i <= 2; ++i) { 1425 data->pwm[i] = 1426 lm85_read_value(client, LM85_REG_PWM(i)); 1427 } 1428 1429 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1430 1431 if ( data->type == adt7463 ) { 1432 if( data->therm_total < ULONG_MAX - 256 ) { 1433 data->therm_total += 1434 lm85_read_value(client, ADT7463_REG_THERM ); 1435 } 1436 } else if ( data->type == emc6d100 ) { 1437 /* Three more voltage sensors */ 1438 for (i = 5; i <= 7; ++i) { 1439 data->in[i] = 1440 lm85_read_value(client, EMC6D100_REG_IN(i)); 1441 } 1442 /* More alarm bits */ 1443 data->alarms |= 1444 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16; 1445 } else if (data->type == emc6d102 ) { 1446 /* Have to read LSB bits after the MSB ones because 1447 the reading of the MSB bits has frozen the 1448 LSBs (backward from the ADM1027). 1449 */ 1450 int ext1 = lm85_read_value(client, 1451 EMC6D102_REG_EXTEND_ADC1); 1452 int ext2 = lm85_read_value(client, 1453 EMC6D102_REG_EXTEND_ADC2); 1454 int ext3 = lm85_read_value(client, 1455 EMC6D102_REG_EXTEND_ADC3); 1456 int ext4 = lm85_read_value(client, 1457 EMC6D102_REG_EXTEND_ADC4); 1458 data->in_ext[0] = ext3 & 0x0f; 1459 data->in_ext[1] = ext4 & 0x0f; 1460 data->in_ext[2] = (ext4 >> 4) & 0x0f; 1461 data->in_ext[3] = (ext3 >> 4) & 0x0f; 1462 data->in_ext[4] = (ext2 >> 4) & 0x0f; 1463 1464 data->temp_ext[0] = ext1 & 0x0f; 1465 data->temp_ext[1] = ext2 & 0x0f; 1466 data->temp_ext[2] = (ext1 >> 4) & 0x0f; 1467 } 1468 1469 data->last_reading = jiffies ; 1470 }; /* last_reading */ 1471 1472 if ( !data->valid || 1473 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) { 1474 /* Things that don't change often */ 1475 dev_dbg(&client->dev, "Reading config values\n"); 1476 1477 for (i = 0; i <= 3; ++i) { 1478 data->in_min[i] = 1479 lm85_read_value(client, LM85_REG_IN_MIN(i)); 1480 data->in_max[i] = 1481 lm85_read_value(client, LM85_REG_IN_MAX(i)); 1482 } 1483 1484 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1485 data->in_min[4] = lm85_read_value(client, 1486 LM85_REG_IN_MIN(4)); 1487 data->in_max[4] = lm85_read_value(client, 1488 LM85_REG_IN_MAX(4)); 1489 } 1490 1491 if ( data->type == emc6d100 ) { 1492 for (i = 5; i <= 7; ++i) { 1493 data->in_min[i] = 1494 lm85_read_value(client, EMC6D100_REG_IN_MIN(i)); 1495 data->in_max[i] = 1496 lm85_read_value(client, EMC6D100_REG_IN_MAX(i)); 1497 } 1498 } 1499 1500 for (i = 0; i <= 3; ++i) { 1501 data->fan_min[i] = 1502 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1503 } 1504 1505 for (i = 0; i <= 2; ++i) { 1506 data->temp_min[i] = 1507 lm85_read_value(client, LM85_REG_TEMP_MIN(i)); 1508 data->temp_max[i] = 1509 lm85_read_value(client, LM85_REG_TEMP_MAX(i)); 1510 } 1511 1512 for (i = 0; i <= 2; ++i) { 1513 int val ; 1514 data->autofan[i].config = 1515 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1516 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1517 data->autofan[i].freq = val & 0x07 ; 1518 data->zone[i].range = (val >> 4) & 0x0f ; 1519 data->autofan[i].min_pwm = 1520 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1521 data->zone[i].limit = 1522 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1523 data->zone[i].critical = 1524 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1525 } 1526 1527 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1528 data->smooth[0] = i & 0x0f ; 1529 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */ 1530 data->autofan[0].min_off = (i & 0x20) != 0 ; 1531 data->autofan[1].min_off = (i & 0x40) != 0 ; 1532 data->autofan[2].min_off = (i & 0x80) != 0 ; 1533 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2); 1534 data->smooth[1] = (i>>4) & 0x0f ; 1535 data->smooth[2] = i & 0x0f ; 1536 1537 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1538 data->zone[0].hyst = (i>>4) & 0x0f ; 1539 data->zone[1].hyst = i & 0x0f ; 1540 1541 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1542 data->zone[2].hyst = (i>>4) & 0x0f ; 1543 1544 if ( (data->type == lm85b) || (data->type == lm85c) ) { 1545 data->tach_mode = lm85_read_value(client, 1546 LM85_REG_TACH_MODE ); 1547 data->spinup_ctl = lm85_read_value(client, 1548 LM85_REG_SPINUP_CTL ); 1549 } else if ( (data->type == adt7463) || (data->type == adm1027) ) { 1550 if ( data->type == adt7463 ) { 1551 for (i = 0; i <= 2; ++i) { 1552 data->oppoint[i] = lm85_read_value(client, 1553 ADT7463_REG_OPPOINT(i) ); 1554 } 1555 data->tmin_ctl = lm85_read_value(client, 1556 ADT7463_REG_TMIN_CTL1 ); 1557 data->therm_limit = lm85_read_value(client, 1558 ADT7463_REG_THERM_LIMIT ); 1559 } 1560 for (i = 0; i <= 2; ++i) { 1561 data->temp_offset[i] = lm85_read_value(client, 1562 ADM1027_REG_TEMP_OFFSET(i) ); 1563 } 1564 data->tach_mode = lm85_read_value(client, 1565 ADM1027_REG_CONFIG3 ); 1566 data->fan_ppr = lm85_read_value(client, 1567 ADM1027_REG_FAN_PPR ); 1568 } 1569 1570 data->last_config = jiffies; 1571 }; /* last_config */ 1572 1573 data->valid = 1; 1574 1575 mutex_unlock(&data->update_lock); 1576 1577 return data; 1578 } 1579 1580 1581 static int __init sm_lm85_init(void) 1582 { 1583 return i2c_add_driver(&lm85_driver); 1584 } 1585 1586 static void __exit sm_lm85_exit(void) 1587 { 1588 i2c_del_driver(&lm85_driver); 1589 } 1590 1591 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect. 1592 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with 1593 * post 2.7.0 CVS changes. 1594 */ 1595 MODULE_LICENSE("GPL"); 1596 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com"); 1597 MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1598 1599 module_init(sm_lm85_init); 1600 module_exit(sm_lm85_exit); 1601