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/i2c-sensor.h> 32 #include <linux/i2c-vid.h> 33 34 /* Addresses to scan */ 35 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 36 static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END }; 37 38 /* Insmod parameters */ 39 SENSORS_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102); 40 41 /* The LM85 registers */ 42 43 #define LM85_REG_IN(nr) (0x20 + (nr)) 44 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2) 45 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2) 46 47 #define LM85_REG_TEMP(nr) (0x25 + (nr)) 48 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2) 49 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2) 50 51 /* Fan speeds are LSB, MSB (2 bytes) */ 52 #define LM85_REG_FAN(nr) (0x28 + (nr) *2) 53 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) *2) 54 55 #define LM85_REG_PWM(nr) (0x30 + (nr)) 56 57 #define ADT7463_REG_OPPOINT(nr) (0x33 + (nr)) 58 59 #define ADT7463_REG_TMIN_CTL1 0x36 60 #define ADT7463_REG_TMIN_CTL2 0x37 61 62 #define LM85_REG_DEVICE 0x3d 63 #define LM85_REG_COMPANY 0x3e 64 #define LM85_REG_VERSTEP 0x3f 65 /* These are the recognized values for the above regs */ 66 #define LM85_DEVICE_ADX 0x27 67 #define LM85_COMPANY_NATIONAL 0x01 68 #define LM85_COMPANY_ANALOG_DEV 0x41 69 #define LM85_COMPANY_SMSC 0x5c 70 #define LM85_VERSTEP_VMASK 0xf0 71 #define LM85_VERSTEP_GENERIC 0x60 72 #define LM85_VERSTEP_LM85C 0x60 73 #define LM85_VERSTEP_LM85B 0x62 74 #define LM85_VERSTEP_ADM1027 0x60 75 #define LM85_VERSTEP_ADT7463 0x62 76 #define LM85_VERSTEP_ADT7463C 0x6A 77 #define LM85_VERSTEP_EMC6D100_A0 0x60 78 #define LM85_VERSTEP_EMC6D100_A1 0x61 79 #define LM85_VERSTEP_EMC6D102 0x65 80 81 #define LM85_REG_CONFIG 0x40 82 83 #define LM85_REG_ALARM1 0x41 84 #define LM85_REG_ALARM2 0x42 85 86 #define LM85_REG_VID 0x43 87 88 /* Automated FAN control */ 89 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr)) 90 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr)) 91 #define LM85_REG_AFAN_SPIKE1 0x62 92 #define LM85_REG_AFAN_SPIKE2 0x63 93 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr)) 94 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr)) 95 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr)) 96 #define LM85_REG_AFAN_HYST1 0x6d 97 #define LM85_REG_AFAN_HYST2 0x6e 98 99 #define LM85_REG_TACH_MODE 0x74 100 #define LM85_REG_SPINUP_CTL 0x75 101 102 #define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr)) 103 #define ADM1027_REG_CONFIG2 0x73 104 #define ADM1027_REG_INTMASK1 0x74 105 #define ADM1027_REG_INTMASK2 0x75 106 #define ADM1027_REG_EXTEND_ADC1 0x76 107 #define ADM1027_REG_EXTEND_ADC2 0x77 108 #define ADM1027_REG_CONFIG3 0x78 109 #define ADM1027_REG_FAN_PPR 0x7b 110 111 #define ADT7463_REG_THERM 0x79 112 #define ADT7463_REG_THERM_LIMIT 0x7A 113 114 #define EMC6D100_REG_ALARM3 0x7d 115 /* IN5, IN6 and IN7 */ 116 #define EMC6D100_REG_IN(nr) (0x70 + ((nr)-5)) 117 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr)-5) * 2) 118 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr)-5) * 2) 119 #define EMC6D102_REG_EXTEND_ADC1 0x85 120 #define EMC6D102_REG_EXTEND_ADC2 0x86 121 #define EMC6D102_REG_EXTEND_ADC3 0x87 122 #define EMC6D102_REG_EXTEND_ADC4 0x88 123 124 #define LM85_ALARM_IN0 0x0001 125 #define LM85_ALARM_IN1 0x0002 126 #define LM85_ALARM_IN2 0x0004 127 #define LM85_ALARM_IN3 0x0008 128 #define LM85_ALARM_TEMP1 0x0010 129 #define LM85_ALARM_TEMP2 0x0020 130 #define LM85_ALARM_TEMP3 0x0040 131 #define LM85_ALARM_ALARM2 0x0080 132 #define LM85_ALARM_IN4 0x0100 133 #define LM85_ALARM_RESERVED 0x0200 134 #define LM85_ALARM_FAN1 0x0400 135 #define LM85_ALARM_FAN2 0x0800 136 #define LM85_ALARM_FAN3 0x1000 137 #define LM85_ALARM_FAN4 0x2000 138 #define LM85_ALARM_TEMP1_FAULT 0x4000 139 #define LM85_ALARM_TEMP3_FAULT 0x8000 140 141 142 /* Conversions. Rounding and limit checking is only done on the TO_REG 143 variants. Note that you should be a bit careful with which arguments 144 these macros are called: arguments may be evaluated more than once. 145 */ 146 147 /* IN are scaled acording to built-in resistors */ 148 static int lm85_scaling[] = { /* .001 Volts */ 149 2500, 2250, 3300, 5000, 12000, 150 3300, 1500, 1800 /*EMC6D100*/ 151 }; 152 #define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from)) 153 154 #define INS_TO_REG(n,val) \ 155 SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255) 156 157 #define INSEXT_FROM_REG(n,val,ext,scale) \ 158 SCALE((val)*(scale) + (ext),192*(scale),lm85_scaling[n]) 159 160 #define INS_FROM_REG(n,val) INSEXT_FROM_REG(n,val,0,1) 161 162 /* FAN speed is measured using 90kHz clock */ 163 #define FAN_TO_REG(val) (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534)) 164 #define FAN_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:5400000/(val)) 165 166 /* Temperature is reported in .001 degC increments */ 167 #define TEMP_TO_REG(val) \ 168 SENSORS_LIMIT(SCALE(val,1000,1),-127,127) 169 #define TEMPEXT_FROM_REG(val,ext,scale) \ 170 SCALE((val)*scale + (ext),scale,1000) 171 #define TEMP_FROM_REG(val) \ 172 TEMPEXT_FROM_REG(val,0,1) 173 174 #define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255)) 175 #define PWM_FROM_REG(val) (val) 176 177 178 /* ZONEs have the following parameters: 179 * Limit (low) temp, 1. degC 180 * Hysteresis (below limit), 1. degC (0-15) 181 * Range of speed control, .1 degC (2-80) 182 * Critical (high) temp, 1. degC 183 * 184 * FAN PWMs have the following parameters: 185 * Reference Zone, 1, 2, 3, etc. 186 * Spinup time, .05 sec 187 * PWM value at limit/low temp, 1 count 188 * PWM Frequency, 1. Hz 189 * PWM is Min or OFF below limit, flag 190 * Invert PWM output, flag 191 * 192 * Some chips filter the temp, others the fan. 193 * Filter constant (or disabled) .1 seconds 194 */ 195 196 /* These are the zone temperature range encodings in .001 degree C */ 197 static int lm85_range_map[] = { 198 2000, 2500, 3300, 4000, 5000, 6600, 199 8000, 10000, 13300, 16000, 20000, 26600, 200 32000, 40000, 53300, 80000 201 }; 202 static int RANGE_TO_REG( int range ) 203 { 204 int i; 205 206 if ( range < lm85_range_map[0] ) { 207 return 0 ; 208 } else if ( range > lm85_range_map[15] ) { 209 return 15 ; 210 } else { /* find closest match */ 211 for ( i = 14 ; i >= 0 ; --i ) { 212 if ( range > lm85_range_map[i] ) { /* range bracketed */ 213 if ((lm85_range_map[i+1] - range) < 214 (range - lm85_range_map[i])) { 215 i++; 216 break; 217 } 218 break; 219 } 220 } 221 } 222 return( i & 0x0f ); 223 } 224 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f]) 225 226 /* These are the Acoustic Enhancement, or Temperature smoothing encodings 227 * NOTE: The enable/disable bit is INCLUDED in these encodings as the 228 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value 229 * is ignored, or set to 0. 230 */ 231 /* These are the PWM frequency encodings */ 232 static int lm85_freq_map[] = { /* .1 Hz */ 233 100, 150, 230, 300, 380, 470, 620, 940 234 }; 235 static int FREQ_TO_REG( int freq ) 236 { 237 int i; 238 239 if( freq >= lm85_freq_map[7] ) { return 7 ; } 240 for( i = 0 ; i < 7 ; ++i ) 241 if( freq <= lm85_freq_map[i] ) 242 break ; 243 return( i & 0x07 ); 244 } 245 #define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07]) 246 247 /* Since we can't use strings, I'm abusing these numbers 248 * to stand in for the following meanings: 249 * 1 -- PWM responds to Zone 1 250 * 2 -- PWM responds to Zone 2 251 * 3 -- PWM responds to Zone 3 252 * 23 -- PWM responds to the higher temp of Zone 2 or 3 253 * 123 -- PWM responds to highest of Zone 1, 2, or 3 254 * 0 -- PWM is always at 0% (ie, off) 255 * -1 -- PWM is always at 100% 256 * -2 -- PWM responds to manual control 257 */ 258 259 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 }; 260 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07]) 261 262 static int ZONE_TO_REG( int zone ) 263 { 264 int i; 265 266 for( i = 0 ; i <= 7 ; ++i ) 267 if( zone == lm85_zone_map[i] ) 268 break ; 269 if( i > 7 ) /* Not found. */ 270 i = 3; /* Always 100% */ 271 return( (i & 0x07)<<5 ); 272 } 273 274 #define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15)) 275 #define HYST_FROM_REG(val) ((val)*1000) 276 277 #define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127)) 278 #define OFFSET_FROM_REG(val) ((val)*25) 279 280 #define PPR_MASK(fan) (0x03<<(fan *2)) 281 #define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2)) 282 #define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1) 283 284 /* i2c-vid.h defines vid_from_reg() */ 285 #define VID_FROM_REG(val,vrm) (vid_from_reg((val),(vrm))) 286 287 /* Unlike some other drivers we DO NOT set initial limits. Use 288 * the config file to set limits. Some users have reported 289 * motherboards shutting down when we set limits in a previous 290 * version of the driver. 291 */ 292 293 /* Chip sampling rates 294 * 295 * Some sensors are not updated more frequently than once per second 296 * so it doesn't make sense to read them more often than that. 297 * We cache the results and return the saved data if the driver 298 * is called again before a second has elapsed. 299 * 300 * Also, there is significant configuration data for this chip 301 * given the automatic PWM fan control that is possible. There 302 * are about 47 bytes of config data to only 22 bytes of actual 303 * readings. So, we keep the config data up to date in the cache 304 * when it is written and only sample it once every 1 *minute* 305 */ 306 #define LM85_DATA_INTERVAL (HZ + HZ / 2) 307 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ) 308 309 /* For each registered LM85, we need to keep some data in memory. That 310 data is pointed to by lm85_list[NR]->data. The structure itself is 311 dynamically allocated, at the same time when a new lm85 client is 312 allocated. */ 313 314 /* LM85 can automatically adjust fan speeds based on temperature 315 * This structure encapsulates an entire Zone config. There are 316 * three zones (one for each temperature input) on the lm85 317 */ 318 struct lm85_zone { 319 s8 limit; /* Low temp limit */ 320 u8 hyst; /* Low limit hysteresis. (0-15) */ 321 u8 range; /* Temp range, encoded */ 322 s8 critical; /* "All fans ON" temp limit */ 323 u8 off_desired; /* Actual "off" temperature specified. Preserved 324 * to prevent "drift" as other autofan control 325 * values change. 326 */ 327 u8 max_desired; /* Actual "max" temperature specified. Preserved 328 * to prevent "drift" as other autofan control 329 * values change. 330 */ 331 }; 332 333 struct lm85_autofan { 334 u8 config; /* Register value */ 335 u8 freq; /* PWM frequency, encoded */ 336 u8 min_pwm; /* Minimum PWM value, encoded */ 337 u8 min_off; /* Min PWM or OFF below "limit", flag */ 338 }; 339 340 struct lm85_data { 341 struct i2c_client client; 342 struct semaphore lock; 343 enum chips type; 344 345 struct semaphore update_lock; 346 int valid; /* !=0 if following fields are valid */ 347 unsigned long last_reading; /* In jiffies */ 348 unsigned long last_config; /* In jiffies */ 349 350 u8 in[8]; /* Register value */ 351 u8 in_max[8]; /* Register value */ 352 u8 in_min[8]; /* Register value */ 353 s8 temp[3]; /* Register value */ 354 s8 temp_min[3]; /* Register value */ 355 s8 temp_max[3]; /* Register value */ 356 s8 temp_offset[3]; /* Register value */ 357 u16 fan[4]; /* Register value */ 358 u16 fan_min[4]; /* Register value */ 359 u8 pwm[3]; /* Register value */ 360 u8 spinup_ctl; /* Register encoding, combined */ 361 u8 tach_mode; /* Register encoding, combined */ 362 u8 temp_ext[3]; /* Decoded values */ 363 u8 in_ext[8]; /* Decoded values */ 364 u8 adc_scale; /* ADC Extended bits scaling factor */ 365 u8 fan_ppr; /* Register value */ 366 u8 smooth[3]; /* Register encoding */ 367 u8 vid; /* Register value */ 368 u8 vrm; /* VRM version */ 369 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */ 370 u8 oppoint[3]; /* Register value */ 371 u16 tmin_ctl; /* Register value */ 372 unsigned long therm_total; /* Cummulative therm count */ 373 u8 therm_limit; /* Register value */ 374 u32 alarms; /* Register encoding, combined */ 375 struct lm85_autofan autofan[3]; 376 struct lm85_zone zone[3]; 377 }; 378 379 static int lm85_attach_adapter(struct i2c_adapter *adapter); 380 static int lm85_detect(struct i2c_adapter *adapter, int address, 381 int kind); 382 static int lm85_detach_client(struct i2c_client *client); 383 384 static int lm85_read_value(struct i2c_client *client, u8 register); 385 static int lm85_write_value(struct i2c_client *client, u8 register, int value); 386 static struct lm85_data *lm85_update_device(struct device *dev); 387 static void lm85_init_client(struct i2c_client *client); 388 389 390 static struct i2c_driver lm85_driver = { 391 .owner = THIS_MODULE, 392 .name = "lm85", 393 .id = I2C_DRIVERID_LM85, 394 .flags = I2C_DF_NOTIFY, 395 .attach_adapter = lm85_attach_adapter, 396 .detach_client = lm85_detach_client, 397 }; 398 399 400 /* 4 Fans */ 401 static ssize_t show_fan(struct device *dev, char *buf, int nr) 402 { 403 struct lm85_data *data = lm85_update_device(dev); 404 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) ); 405 } 406 static ssize_t show_fan_min(struct device *dev, char *buf, int nr) 407 { 408 struct lm85_data *data = lm85_update_device(dev); 409 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) ); 410 } 411 static ssize_t set_fan_min(struct device *dev, const char *buf, 412 size_t count, int nr) 413 { 414 struct i2c_client *client = to_i2c_client(dev); 415 struct lm85_data *data = i2c_get_clientdata(client); 416 long val = simple_strtol(buf, NULL, 10); 417 418 down(&data->update_lock); 419 data->fan_min[nr] = FAN_TO_REG(val); 420 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); 421 up(&data->update_lock); 422 return count; 423 } 424 425 #define show_fan_offset(offset) \ 426 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 427 { \ 428 return show_fan(dev, buf, offset - 1); \ 429 } \ 430 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 431 { \ 432 return show_fan_min(dev, buf, offset - 1); \ 433 } \ 434 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ 435 const char *buf, size_t count) \ 436 { \ 437 return set_fan_min(dev, buf, count, offset - 1); \ 438 } \ 439 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \ 440 NULL); \ 441 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 442 show_fan_##offset##_min, set_fan_##offset##_min); 443 444 show_fan_offset(1); 445 show_fan_offset(2); 446 show_fan_offset(3); 447 show_fan_offset(4); 448 449 /* vid, vrm, alarms */ 450 451 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) 452 { 453 struct lm85_data *data = lm85_update_device(dev); 454 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); 455 } 456 457 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 458 459 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) 460 { 461 struct lm85_data *data = lm85_update_device(dev); 462 return sprintf(buf, "%ld\n", (long) data->vrm); 463 } 464 465 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 466 { 467 struct i2c_client *client = to_i2c_client(dev); 468 struct lm85_data *data = i2c_get_clientdata(client); 469 u32 val; 470 471 val = simple_strtoul(buf, NULL, 10); 472 data->vrm = val; 473 return count; 474 } 475 476 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 477 478 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf) 479 { 480 struct lm85_data *data = lm85_update_device(dev); 481 return sprintf(buf, "%u\n", data->alarms); 482 } 483 484 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 485 486 /* pwm */ 487 488 static ssize_t show_pwm(struct device *dev, char *buf, int nr) 489 { 490 struct lm85_data *data = lm85_update_device(dev); 491 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) ); 492 } 493 static ssize_t set_pwm(struct device *dev, const char *buf, 494 size_t count, int nr) 495 { 496 struct i2c_client *client = to_i2c_client(dev); 497 struct lm85_data *data = i2c_get_clientdata(client); 498 long val = simple_strtol(buf, NULL, 10); 499 500 down(&data->update_lock); 501 data->pwm[nr] = PWM_TO_REG(val); 502 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 503 up(&data->update_lock); 504 return count; 505 } 506 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr) 507 { 508 struct lm85_data *data = lm85_update_device(dev); 509 int pwm_zone; 510 511 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 512 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) ); 513 } 514 515 #define show_pwm_reg(offset) \ 516 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 517 { \ 518 return show_pwm(dev, buf, offset - 1); \ 519 } \ 520 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \ 521 const char *buf, size_t count) \ 522 { \ 523 return set_pwm(dev, buf, count, offset - 1); \ 524 } \ 525 static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 526 { \ 527 return show_pwm_enable(dev, buf, offset - 1); \ 528 } \ 529 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 530 show_pwm_##offset, set_pwm_##offset); \ 531 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \ 532 show_pwm_enable##offset, NULL); 533 534 show_pwm_reg(1); 535 show_pwm_reg(2); 536 show_pwm_reg(3); 537 538 /* Voltages */ 539 540 static ssize_t show_in(struct device *dev, char *buf, int nr) 541 { 542 struct lm85_data *data = lm85_update_device(dev); 543 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr, 544 data->in[nr], 545 data->in_ext[nr], 546 data->adc_scale) ); 547 } 548 static ssize_t show_in_min(struct device *dev, char *buf, int nr) 549 { 550 struct lm85_data *data = lm85_update_device(dev); 551 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) ); 552 } 553 static ssize_t set_in_min(struct device *dev, const char *buf, 554 size_t count, int nr) 555 { 556 struct i2c_client *client = to_i2c_client(dev); 557 struct lm85_data *data = i2c_get_clientdata(client); 558 long val = simple_strtol(buf, NULL, 10); 559 560 down(&data->update_lock); 561 data->in_min[nr] = INS_TO_REG(nr, val); 562 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 563 up(&data->update_lock); 564 return count; 565 } 566 static ssize_t show_in_max(struct device *dev, char *buf, int nr) 567 { 568 struct lm85_data *data = lm85_update_device(dev); 569 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) ); 570 } 571 static ssize_t set_in_max(struct device *dev, const char *buf, 572 size_t count, int nr) 573 { 574 struct i2c_client *client = to_i2c_client(dev); 575 struct lm85_data *data = i2c_get_clientdata(client); 576 long val = simple_strtol(buf, NULL, 10); 577 578 down(&data->update_lock); 579 data->in_max[nr] = INS_TO_REG(nr, val); 580 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 581 up(&data->update_lock); 582 return count; 583 } 584 #define show_in_reg(offset) \ 585 static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 586 { \ 587 return show_in(dev, buf, offset); \ 588 } \ 589 static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 590 { \ 591 return show_in_min(dev, buf, offset); \ 592 } \ 593 static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 594 { \ 595 return show_in_max(dev, buf, offset); \ 596 } \ 597 static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \ 598 const char *buf, size_t count) \ 599 { \ 600 return set_in_min(dev, buf, count, offset); \ 601 } \ 602 static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \ 603 const char *buf, size_t count) \ 604 { \ 605 return set_in_max(dev, buf, count, offset); \ 606 } \ 607 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \ 608 NULL); \ 609 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 610 show_in_##offset##_min, set_in_##offset##_min); \ 611 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 612 show_in_##offset##_max, set_in_##offset##_max); 613 614 show_in_reg(0); 615 show_in_reg(1); 616 show_in_reg(2); 617 show_in_reg(3); 618 show_in_reg(4); 619 620 /* Temps */ 621 622 static ssize_t show_temp(struct device *dev, char *buf, int nr) 623 { 624 struct lm85_data *data = lm85_update_device(dev); 625 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr], 626 data->temp_ext[nr], 627 data->adc_scale) ); 628 } 629 static ssize_t show_temp_min(struct device *dev, char *buf, int nr) 630 { 631 struct lm85_data *data = lm85_update_device(dev); 632 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) ); 633 } 634 static ssize_t set_temp_min(struct device *dev, const char *buf, 635 size_t count, int nr) 636 { 637 struct i2c_client *client = to_i2c_client(dev); 638 struct lm85_data *data = i2c_get_clientdata(client); 639 long val = simple_strtol(buf, NULL, 10); 640 641 down(&data->update_lock); 642 data->temp_min[nr] = TEMP_TO_REG(val); 643 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 644 up(&data->update_lock); 645 return count; 646 } 647 static ssize_t show_temp_max(struct device *dev, char *buf, int nr) 648 { 649 struct lm85_data *data = lm85_update_device(dev); 650 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) ); 651 } 652 static ssize_t set_temp_max(struct device *dev, const char *buf, 653 size_t count, int nr) 654 { 655 struct i2c_client *client = to_i2c_client(dev); 656 struct lm85_data *data = i2c_get_clientdata(client); 657 long val = simple_strtol(buf, NULL, 10); 658 659 down(&data->update_lock); 660 data->temp_max[nr] = TEMP_TO_REG(val); 661 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 662 up(&data->update_lock); 663 return count; 664 } 665 #define show_temp_reg(offset) \ 666 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 667 { \ 668 return show_temp(dev, buf, offset - 1); \ 669 } \ 670 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 671 { \ 672 return show_temp_min(dev, buf, offset - 1); \ 673 } \ 674 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 675 { \ 676 return show_temp_max(dev, buf, offset - 1); \ 677 } \ 678 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \ 679 const char *buf, size_t count) \ 680 { \ 681 return set_temp_min(dev, buf, count, offset - 1); \ 682 } \ 683 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \ 684 const char *buf, size_t count) \ 685 { \ 686 return set_temp_max(dev, buf, count, offset - 1); \ 687 } \ 688 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \ 689 NULL); \ 690 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 691 show_temp_##offset##_min, set_temp_##offset##_min); \ 692 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 693 show_temp_##offset##_max, set_temp_##offset##_max); 694 695 show_temp_reg(1); 696 show_temp_reg(2); 697 show_temp_reg(3); 698 699 700 /* Automatic PWM control */ 701 702 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr) 703 { 704 struct lm85_data *data = lm85_update_device(dev); 705 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config)); 706 } 707 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf, 708 size_t count, int nr) 709 { 710 struct i2c_client *client = to_i2c_client(dev); 711 struct lm85_data *data = i2c_get_clientdata(client); 712 long val = simple_strtol(buf, NULL, 10); 713 714 down(&data->update_lock); 715 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 716 | ZONE_TO_REG(val) ; 717 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 718 data->autofan[nr].config); 719 up(&data->update_lock); 720 return count; 721 } 722 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr) 723 { 724 struct lm85_data *data = lm85_update_device(dev); 725 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 726 } 727 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf, 728 size_t count, int nr) 729 { 730 struct i2c_client *client = to_i2c_client(dev); 731 struct lm85_data *data = i2c_get_clientdata(client); 732 long val = simple_strtol(buf, NULL, 10); 733 734 down(&data->update_lock); 735 data->autofan[nr].min_pwm = PWM_TO_REG(val); 736 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), 737 data->autofan[nr].min_pwm); 738 up(&data->update_lock); 739 return count; 740 } 741 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr) 742 { 743 struct lm85_data *data = lm85_update_device(dev); 744 return sprintf(buf,"%d\n", data->autofan[nr].min_off); 745 } 746 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf, 747 size_t count, int nr) 748 { 749 struct i2c_client *client = to_i2c_client(dev); 750 struct lm85_data *data = i2c_get_clientdata(client); 751 long val = simple_strtol(buf, NULL, 10); 752 753 down(&data->update_lock); 754 data->autofan[nr].min_off = val; 755 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0] 756 | data->syncpwm3 757 | (data->autofan[0].min_off ? 0x20 : 0) 758 | (data->autofan[1].min_off ? 0x40 : 0) 759 | (data->autofan[2].min_off ? 0x80 : 0) 760 ); 761 up(&data->update_lock); 762 return count; 763 } 764 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr) 765 { 766 struct lm85_data *data = lm85_update_device(dev); 767 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq)); 768 } 769 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf, 770 size_t count, int nr) 771 { 772 struct i2c_client *client = to_i2c_client(dev); 773 struct lm85_data *data = i2c_get_clientdata(client); 774 long val = simple_strtol(buf, NULL, 10); 775 776 down(&data->update_lock); 777 data->autofan[nr].freq = FREQ_TO_REG(val); 778 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 779 (data->zone[nr].range << 4) 780 | data->autofan[nr].freq 781 ); 782 up(&data->update_lock); 783 return count; 784 } 785 #define pwm_auto(offset) \ 786 static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 787 char *buf) \ 788 { \ 789 return show_pwm_auto_channels(dev, buf, offset - 1); \ 790 } \ 791 static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 792 const char *buf, size_t count) \ 793 { \ 794 return set_pwm_auto_channels(dev, buf, count, offset - 1); \ 795 } \ 796 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 797 char *buf) \ 798 { \ 799 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \ 800 } \ 801 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 802 const char *buf, size_t count) \ 803 { \ 804 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \ 805 } \ 806 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 807 char *buf) \ 808 { \ 809 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \ 810 } \ 811 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 812 const char *buf, size_t count) \ 813 { \ 814 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \ 815 } \ 816 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \ 817 char *buf) \ 818 { \ 819 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \ 820 } \ 821 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \ 822 const char *buf, size_t count) \ 823 { \ 824 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \ 825 } \ 826 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \ 827 show_pwm##offset##_auto_channels, \ 828 set_pwm##offset##_auto_channels); \ 829 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \ 830 show_pwm##offset##_auto_pwm_min, \ 831 set_pwm##offset##_auto_pwm_min); \ 832 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \ 833 show_pwm##offset##_auto_pwm_minctl, \ 834 set_pwm##offset##_auto_pwm_minctl); \ 835 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \ 836 show_pwm##offset##_auto_pwm_freq, \ 837 set_pwm##offset##_auto_pwm_freq); 838 pwm_auto(1); 839 pwm_auto(2); 840 pwm_auto(3); 841 842 /* Temperature settings for automatic PWM control */ 843 844 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr) 845 { 846 struct lm85_data *data = lm85_update_device(dev); 847 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 848 HYST_FROM_REG(data->zone[nr].hyst)); 849 } 850 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf, 851 size_t count, int nr) 852 { 853 struct i2c_client *client = to_i2c_client(dev); 854 struct lm85_data *data = i2c_get_clientdata(client); 855 int min; 856 long val = simple_strtol(buf, NULL, 10); 857 858 down(&data->update_lock); 859 min = TEMP_FROM_REG(data->zone[nr].limit); 860 data->zone[nr].off_desired = TEMP_TO_REG(val); 861 data->zone[nr].hyst = HYST_TO_REG(min - val); 862 if ( nr == 0 || nr == 1 ) { 863 lm85_write_value(client, LM85_REG_AFAN_HYST1, 864 (data->zone[0].hyst << 4) 865 | data->zone[1].hyst 866 ); 867 } else { 868 lm85_write_value(client, LM85_REG_AFAN_HYST2, 869 (data->zone[2].hyst << 4) 870 ); 871 } 872 up(&data->update_lock); 873 return count; 874 } 875 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr) 876 { 877 struct lm85_data *data = lm85_update_device(dev); 878 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) ); 879 } 880 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf, 881 size_t count, int nr) 882 { 883 struct i2c_client *client = to_i2c_client(dev); 884 struct lm85_data *data = i2c_get_clientdata(client); 885 long val = simple_strtol(buf, NULL, 10); 886 887 down(&data->update_lock); 888 data->zone[nr].limit = TEMP_TO_REG(val); 889 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 890 data->zone[nr].limit); 891 892 /* Update temp_auto_max and temp_auto_range */ 893 data->zone[nr].range = RANGE_TO_REG( 894 TEMP_FROM_REG(data->zone[nr].max_desired) - 895 TEMP_FROM_REG(data->zone[nr].limit)); 896 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 897 ((data->zone[nr].range & 0x0f) << 4) 898 | (data->autofan[nr].freq & 0x07)); 899 900 /* Update temp_auto_hyst and temp_auto_off */ 901 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 902 data->zone[nr].limit) - TEMP_FROM_REG( 903 data->zone[nr].off_desired)); 904 if ( nr == 0 || nr == 1 ) { 905 lm85_write_value(client, LM85_REG_AFAN_HYST1, 906 (data->zone[0].hyst << 4) 907 | data->zone[1].hyst 908 ); 909 } else { 910 lm85_write_value(client, LM85_REG_AFAN_HYST2, 911 (data->zone[2].hyst << 4) 912 ); 913 } 914 up(&data->update_lock); 915 return count; 916 } 917 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr) 918 { 919 struct lm85_data *data = lm85_update_device(dev); 920 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 921 RANGE_FROM_REG(data->zone[nr].range)); 922 } 923 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf, 924 size_t count, int nr) 925 { 926 struct i2c_client *client = to_i2c_client(dev); 927 struct lm85_data *data = i2c_get_clientdata(client); 928 int min; 929 long val = simple_strtol(buf, NULL, 10); 930 931 down(&data->update_lock); 932 min = TEMP_FROM_REG(data->zone[nr].limit); 933 data->zone[nr].max_desired = TEMP_TO_REG(val); 934 data->zone[nr].range = RANGE_TO_REG( 935 val - min); 936 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 937 ((data->zone[nr].range & 0x0f) << 4) 938 | (data->autofan[nr].freq & 0x07)); 939 up(&data->update_lock); 940 return count; 941 } 942 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr) 943 { 944 struct lm85_data *data = lm85_update_device(dev); 945 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 946 } 947 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf, 948 size_t count, int nr) 949 { 950 struct i2c_client *client = to_i2c_client(dev); 951 struct lm85_data *data = i2c_get_clientdata(client); 952 long val = simple_strtol(buf, NULL, 10); 953 954 down(&data->update_lock); 955 data->zone[nr].critical = TEMP_TO_REG(val); 956 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 957 data->zone[nr].critical); 958 up(&data->update_lock); 959 return count; 960 } 961 #define temp_auto(offset) \ 962 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 963 char *buf) \ 964 { \ 965 return show_temp_auto_temp_off(dev, buf, offset - 1); \ 966 } \ 967 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 968 const char *buf, size_t count) \ 969 { \ 970 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \ 971 } \ 972 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 973 char *buf) \ 974 { \ 975 return show_temp_auto_temp_min(dev, buf, offset - 1); \ 976 } \ 977 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 978 const char *buf, size_t count) \ 979 { \ 980 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \ 981 } \ 982 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 983 char *buf) \ 984 { \ 985 return show_temp_auto_temp_max(dev, buf, offset - 1); \ 986 } \ 987 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 988 const char *buf, size_t count) \ 989 { \ 990 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \ 991 } \ 992 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 993 char *buf) \ 994 { \ 995 return show_temp_auto_temp_crit(dev, buf, offset - 1); \ 996 } \ 997 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 998 const char *buf, size_t count) \ 999 { \ 1000 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \ 1001 } \ 1002 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \ 1003 show_temp##offset##_auto_temp_off, \ 1004 set_temp##offset##_auto_temp_off); \ 1005 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \ 1006 show_temp##offset##_auto_temp_min, \ 1007 set_temp##offset##_auto_temp_min); \ 1008 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \ 1009 show_temp##offset##_auto_temp_max, \ 1010 set_temp##offset##_auto_temp_max); \ 1011 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \ 1012 show_temp##offset##_auto_temp_crit, \ 1013 set_temp##offset##_auto_temp_crit); 1014 temp_auto(1); 1015 temp_auto(2); 1016 temp_auto(3); 1017 1018 int lm85_attach_adapter(struct i2c_adapter *adapter) 1019 { 1020 if (!(adapter->class & I2C_CLASS_HWMON)) 1021 return 0; 1022 return i2c_detect(adapter, &addr_data, lm85_detect); 1023 } 1024 1025 int lm85_detect(struct i2c_adapter *adapter, int address, 1026 int kind) 1027 { 1028 int company, verstep ; 1029 struct i2c_client *new_client = NULL; 1030 struct lm85_data *data; 1031 int err = 0; 1032 const char *type_name = ""; 1033 1034 if (i2c_is_isa_adapter(adapter)) { 1035 /* This chip has no ISA interface */ 1036 goto ERROR0 ; 1037 }; 1038 1039 if (!i2c_check_functionality(adapter, 1040 I2C_FUNC_SMBUS_BYTE_DATA)) { 1041 /* We need to be able to do byte I/O */ 1042 goto ERROR0 ; 1043 }; 1044 1045 /* OK. For now, we presume we have a valid client. We now create the 1046 client structure, even though we cannot fill it completely yet. 1047 But it allows us to access lm85_{read,write}_value. */ 1048 1049 if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) { 1050 err = -ENOMEM; 1051 goto ERROR0; 1052 } 1053 memset(data, 0, sizeof(struct lm85_data)); 1054 1055 new_client = &data->client; 1056 i2c_set_clientdata(new_client, data); 1057 new_client->addr = address; 1058 new_client->adapter = adapter; 1059 new_client->driver = &lm85_driver; 1060 new_client->flags = 0; 1061 1062 /* Now, we do the remaining detection. */ 1063 1064 company = lm85_read_value(new_client, LM85_REG_COMPANY); 1065 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP); 1066 1067 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with" 1068 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n", 1069 i2c_adapter_id(new_client->adapter), new_client->addr, 1070 company, verstep); 1071 1072 /* If auto-detecting, Determine the chip type. */ 1073 if (kind <= 0) { 1074 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n", 1075 i2c_adapter_id(adapter), address ); 1076 if( company == LM85_COMPANY_NATIONAL 1077 && verstep == LM85_VERSTEP_LM85C ) { 1078 kind = lm85c ; 1079 } else if( company == LM85_COMPANY_NATIONAL 1080 && verstep == LM85_VERSTEP_LM85B ) { 1081 kind = lm85b ; 1082 } else if( company == LM85_COMPANY_NATIONAL 1083 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1084 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1085 " Defaulting to LM85.\n", verstep); 1086 kind = any_chip ; 1087 } else if( company == LM85_COMPANY_ANALOG_DEV 1088 && verstep == LM85_VERSTEP_ADM1027 ) { 1089 kind = adm1027 ; 1090 } else if( company == LM85_COMPANY_ANALOG_DEV 1091 && (verstep == LM85_VERSTEP_ADT7463 1092 || verstep == LM85_VERSTEP_ADT7463C) ) { 1093 kind = adt7463 ; 1094 } else if( company == LM85_COMPANY_ANALOG_DEV 1095 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1096 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1097 " Defaulting to Generic LM85.\n", verstep ); 1098 kind = any_chip ; 1099 } else if( company == LM85_COMPANY_SMSC 1100 && (verstep == LM85_VERSTEP_EMC6D100_A0 1101 || verstep == LM85_VERSTEP_EMC6D100_A1) ) { 1102 /* Unfortunately, we can't tell a '100 from a '101 1103 * from the registers. Since a '101 is a '100 1104 * in a package with fewer pins and therefore no 1105 * 3.3V, 1.5V or 1.8V inputs, perhaps if those 1106 * inputs read 0, then it's a '101. 1107 */ 1108 kind = emc6d100 ; 1109 } else if( company == LM85_COMPANY_SMSC 1110 && verstep == LM85_VERSTEP_EMC6D102) { 1111 kind = emc6d102 ; 1112 } else if( company == LM85_COMPANY_SMSC 1113 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1114 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n"); 1115 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x" 1116 " Defaulting to Generic LM85.\n", verstep ); 1117 kind = any_chip ; 1118 } else if( kind == any_chip 1119 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1120 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n"); 1121 /* Leave kind as "any_chip" */ 1122 } else { 1123 dev_dbg(&adapter->dev, "Autodetection failed\n"); 1124 /* Not an LM85 ... */ 1125 if( kind == any_chip ) { /* User used force=x,y */ 1126 dev_err(&adapter->dev, "Generic LM85 Version 6 not" 1127 " found at %d,0x%02x. Try force_lm85c.\n", 1128 i2c_adapter_id(adapter), address ); 1129 } 1130 err = 0 ; 1131 goto ERROR1; 1132 } 1133 } 1134 1135 /* Fill in the chip specific driver values */ 1136 if ( kind == any_chip ) { 1137 type_name = "lm85"; 1138 } else if ( kind == lm85b ) { 1139 type_name = "lm85b"; 1140 } else if ( kind == lm85c ) { 1141 type_name = "lm85c"; 1142 } else if ( kind == adm1027 ) { 1143 type_name = "adm1027"; 1144 } else if ( kind == adt7463 ) { 1145 type_name = "adt7463"; 1146 } else if ( kind == emc6d100){ 1147 type_name = "emc6d100"; 1148 } else if ( kind == emc6d102 ) { 1149 type_name = "emc6d102"; 1150 } 1151 strlcpy(new_client->name, type_name, I2C_NAME_SIZE); 1152 1153 /* Fill in the remaining client fields */ 1154 data->type = kind; 1155 data->valid = 0; 1156 init_MUTEX(&data->update_lock); 1157 1158 /* Tell the I2C layer a new client has arrived */ 1159 if ((err = i2c_attach_client(new_client))) 1160 goto ERROR1; 1161 1162 /* Set the VRM version */ 1163 data->vrm = i2c_which_vrm(); 1164 1165 /* Initialize the LM85 chip */ 1166 lm85_init_client(new_client); 1167 1168 /* Register sysfs hooks */ 1169 device_create_file(&new_client->dev, &dev_attr_fan1_input); 1170 device_create_file(&new_client->dev, &dev_attr_fan2_input); 1171 device_create_file(&new_client->dev, &dev_attr_fan3_input); 1172 device_create_file(&new_client->dev, &dev_attr_fan4_input); 1173 device_create_file(&new_client->dev, &dev_attr_fan1_min); 1174 device_create_file(&new_client->dev, &dev_attr_fan2_min); 1175 device_create_file(&new_client->dev, &dev_attr_fan3_min); 1176 device_create_file(&new_client->dev, &dev_attr_fan4_min); 1177 device_create_file(&new_client->dev, &dev_attr_pwm1); 1178 device_create_file(&new_client->dev, &dev_attr_pwm2); 1179 device_create_file(&new_client->dev, &dev_attr_pwm3); 1180 device_create_file(&new_client->dev, &dev_attr_pwm1_enable); 1181 device_create_file(&new_client->dev, &dev_attr_pwm2_enable); 1182 device_create_file(&new_client->dev, &dev_attr_pwm3_enable); 1183 device_create_file(&new_client->dev, &dev_attr_in0_input); 1184 device_create_file(&new_client->dev, &dev_attr_in1_input); 1185 device_create_file(&new_client->dev, &dev_attr_in2_input); 1186 device_create_file(&new_client->dev, &dev_attr_in3_input); 1187 device_create_file(&new_client->dev, &dev_attr_in4_input); 1188 device_create_file(&new_client->dev, &dev_attr_in0_min); 1189 device_create_file(&new_client->dev, &dev_attr_in1_min); 1190 device_create_file(&new_client->dev, &dev_attr_in2_min); 1191 device_create_file(&new_client->dev, &dev_attr_in3_min); 1192 device_create_file(&new_client->dev, &dev_attr_in4_min); 1193 device_create_file(&new_client->dev, &dev_attr_in0_max); 1194 device_create_file(&new_client->dev, &dev_attr_in1_max); 1195 device_create_file(&new_client->dev, &dev_attr_in2_max); 1196 device_create_file(&new_client->dev, &dev_attr_in3_max); 1197 device_create_file(&new_client->dev, &dev_attr_in4_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 return 0; 1236 1237 /* Error out and cleanup code */ 1238 ERROR1: 1239 kfree(data); 1240 ERROR0: 1241 return err; 1242 } 1243 1244 int lm85_detach_client(struct i2c_client *client) 1245 { 1246 i2c_detach_client(client); 1247 kfree(i2c_get_clientdata(client)); 1248 return 0; 1249 } 1250 1251 1252 int lm85_read_value(struct i2c_client *client, u8 reg) 1253 { 1254 int res; 1255 1256 /* What size location is it? */ 1257 switch( reg ) { 1258 case LM85_REG_FAN(0) : /* Read WORD data */ 1259 case LM85_REG_FAN(1) : 1260 case LM85_REG_FAN(2) : 1261 case LM85_REG_FAN(3) : 1262 case LM85_REG_FAN_MIN(0) : 1263 case LM85_REG_FAN_MIN(1) : 1264 case LM85_REG_FAN_MIN(2) : 1265 case LM85_REG_FAN_MIN(3) : 1266 case LM85_REG_ALARM1 : /* Read both bytes at once */ 1267 res = i2c_smbus_read_byte_data(client, reg) & 0xff ; 1268 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ; 1269 break ; 1270 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */ 1271 res = i2c_smbus_read_byte_data(client, reg) << 8 ; 1272 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ; 1273 break ; 1274 default: /* Read BYTE data */ 1275 res = i2c_smbus_read_byte_data(client, reg); 1276 break ; 1277 } 1278 1279 return res ; 1280 } 1281 1282 int lm85_write_value(struct i2c_client *client, u8 reg, int value) 1283 { 1284 int res ; 1285 1286 switch( reg ) { 1287 case LM85_REG_FAN(0) : /* Write WORD data */ 1288 case LM85_REG_FAN(1) : 1289 case LM85_REG_FAN(2) : 1290 case LM85_REG_FAN(3) : 1291 case LM85_REG_FAN_MIN(0) : 1292 case LM85_REG_FAN_MIN(1) : 1293 case LM85_REG_FAN_MIN(2) : 1294 case LM85_REG_FAN_MIN(3) : 1295 /* NOTE: ALARM is read only, so not included here */ 1296 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ; 1297 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ; 1298 break ; 1299 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */ 1300 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff); 1301 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ; 1302 break ; 1303 default: /* Write BYTE data */ 1304 res = i2c_smbus_write_byte_data(client, reg, value); 1305 break ; 1306 } 1307 1308 return res ; 1309 } 1310 1311 void lm85_init_client(struct i2c_client *client) 1312 { 1313 int value; 1314 struct lm85_data *data = i2c_get_clientdata(client); 1315 1316 dev_dbg(&client->dev, "Initializing device\n"); 1317 1318 /* Warn if part was not "READY" */ 1319 value = lm85_read_value(client, LM85_REG_CONFIG); 1320 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value); 1321 if( value & 0x02 ) { 1322 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n", 1323 i2c_adapter_id(client->adapter), client->addr ); 1324 }; 1325 if( ! (value & 0x04) ) { 1326 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n", 1327 i2c_adapter_id(client->adapter), client->addr ); 1328 }; 1329 if( value & 0x10 1330 && ( data->type == adm1027 1331 || data->type == adt7463 ) ) { 1332 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. " 1333 "Please report this to the lm85 maintainer.\n", 1334 i2c_adapter_id(client->adapter), client->addr ); 1335 }; 1336 1337 /* WE INTENTIONALLY make no changes to the limits, 1338 * offsets, pwms, fans and zones. If they were 1339 * configured, we don't want to mess with them. 1340 * If they weren't, the default is 100% PWM, no 1341 * control and will suffice until 'sensors -s' 1342 * can be run by the user. 1343 */ 1344 1345 /* Start monitoring */ 1346 value = lm85_read_value(client, LM85_REG_CONFIG); 1347 /* Try to clear LOCK, Set START, save everything else */ 1348 value = (value & ~ 0x02) | 0x01 ; 1349 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value); 1350 lm85_write_value(client, LM85_REG_CONFIG, value); 1351 } 1352 1353 static struct lm85_data *lm85_update_device(struct device *dev) 1354 { 1355 struct i2c_client *client = to_i2c_client(dev); 1356 struct lm85_data *data = i2c_get_clientdata(client); 1357 int i; 1358 1359 down(&data->update_lock); 1360 1361 if ( !data->valid || 1362 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) { 1363 /* Things that change quickly */ 1364 dev_dbg(&client->dev, "Reading sensor values\n"); 1365 1366 /* Have to read extended bits first to "freeze" the 1367 * more significant bits that are read later. 1368 */ 1369 if ( (data->type == adm1027) || (data->type == adt7463) ) { 1370 int ext1 = lm85_read_value(client, 1371 ADM1027_REG_EXTEND_ADC1); 1372 int ext2 = lm85_read_value(client, 1373 ADM1027_REG_EXTEND_ADC2); 1374 int val = (ext1 << 8) + ext2; 1375 1376 for(i = 0; i <= 4; i++) 1377 data->in_ext[i] = (val>>(i * 2))&0x03; 1378 1379 for(i = 0; i <= 2; i++) 1380 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03; 1381 } 1382 1383 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in 1384 the emc6d102 and 2 in the adt7463 and adm1027. In all 1385 other chips ext is always 0 and the value of scale is 1386 irrelevant. So it is left in 4*/ 1387 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4; 1388 1389 for (i = 0; i <= 4; ++i) { 1390 data->in[i] = 1391 lm85_read_value(client, LM85_REG_IN(i)); 1392 } 1393 1394 for (i = 0; i <= 3; ++i) { 1395 data->fan[i] = 1396 lm85_read_value(client, LM85_REG_FAN(i)); 1397 } 1398 1399 for (i = 0; i <= 2; ++i) { 1400 data->temp[i] = 1401 lm85_read_value(client, LM85_REG_TEMP(i)); 1402 } 1403 1404 for (i = 0; i <= 2; ++i) { 1405 data->pwm[i] = 1406 lm85_read_value(client, LM85_REG_PWM(i)); 1407 } 1408 1409 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1410 1411 if ( data->type == adt7463 ) { 1412 if( data->therm_total < ULONG_MAX - 256 ) { 1413 data->therm_total += 1414 lm85_read_value(client, ADT7463_REG_THERM ); 1415 } 1416 } else if ( data->type == emc6d100 ) { 1417 /* Three more voltage sensors */ 1418 for (i = 5; i <= 7; ++i) { 1419 data->in[i] = 1420 lm85_read_value(client, EMC6D100_REG_IN(i)); 1421 } 1422 /* More alarm bits */ 1423 data->alarms |= 1424 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16; 1425 } else if (data->type == emc6d102 ) { 1426 /* Have to read LSB bits after the MSB ones because 1427 the reading of the MSB bits has frozen the 1428 LSBs (backward from the ADM1027). 1429 */ 1430 int ext1 = lm85_read_value(client, 1431 EMC6D102_REG_EXTEND_ADC1); 1432 int ext2 = lm85_read_value(client, 1433 EMC6D102_REG_EXTEND_ADC2); 1434 int ext3 = lm85_read_value(client, 1435 EMC6D102_REG_EXTEND_ADC3); 1436 int ext4 = lm85_read_value(client, 1437 EMC6D102_REG_EXTEND_ADC4); 1438 data->in_ext[0] = ext3 & 0x0f; 1439 data->in_ext[1] = ext4 & 0x0f; 1440 data->in_ext[2] = (ext4 >> 4) & 0x0f; 1441 data->in_ext[3] = (ext3 >> 4) & 0x0f; 1442 data->in_ext[4] = (ext2 >> 4) & 0x0f; 1443 1444 data->temp_ext[0] = ext1 & 0x0f; 1445 data->temp_ext[1] = ext2 & 0x0f; 1446 data->temp_ext[2] = (ext1 >> 4) & 0x0f; 1447 } 1448 1449 data->last_reading = jiffies ; 1450 }; /* last_reading */ 1451 1452 if ( !data->valid || 1453 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) { 1454 /* Things that don't change often */ 1455 dev_dbg(&client->dev, "Reading config values\n"); 1456 1457 for (i = 0; i <= 4; ++i) { 1458 data->in_min[i] = 1459 lm85_read_value(client, LM85_REG_IN_MIN(i)); 1460 data->in_max[i] = 1461 lm85_read_value(client, LM85_REG_IN_MAX(i)); 1462 } 1463 1464 if ( data->type == emc6d100 ) { 1465 for (i = 5; i <= 7; ++i) { 1466 data->in_min[i] = 1467 lm85_read_value(client, EMC6D100_REG_IN_MIN(i)); 1468 data->in_max[i] = 1469 lm85_read_value(client, EMC6D100_REG_IN_MAX(i)); 1470 } 1471 } 1472 1473 for (i = 0; i <= 3; ++i) { 1474 data->fan_min[i] = 1475 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1476 } 1477 1478 for (i = 0; i <= 2; ++i) { 1479 data->temp_min[i] = 1480 lm85_read_value(client, LM85_REG_TEMP_MIN(i)); 1481 data->temp_max[i] = 1482 lm85_read_value(client, LM85_REG_TEMP_MAX(i)); 1483 } 1484 1485 data->vid = lm85_read_value(client, LM85_REG_VID); 1486 1487 for (i = 0; i <= 2; ++i) { 1488 int val ; 1489 data->autofan[i].config = 1490 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1491 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1492 data->autofan[i].freq = val & 0x07 ; 1493 data->zone[i].range = (val >> 4) & 0x0f ; 1494 data->autofan[i].min_pwm = 1495 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1496 data->zone[i].limit = 1497 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1498 data->zone[i].critical = 1499 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1500 } 1501 1502 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1503 data->smooth[0] = i & 0x0f ; 1504 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */ 1505 data->autofan[0].min_off = (i & 0x20) != 0 ; 1506 data->autofan[1].min_off = (i & 0x40) != 0 ; 1507 data->autofan[2].min_off = (i & 0x80) != 0 ; 1508 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2); 1509 data->smooth[1] = (i>>4) & 0x0f ; 1510 data->smooth[2] = i & 0x0f ; 1511 1512 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1513 data->zone[0].hyst = (i>>4) & 0x0f ; 1514 data->zone[1].hyst = i & 0x0f ; 1515 1516 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1517 data->zone[2].hyst = (i>>4) & 0x0f ; 1518 1519 if ( (data->type == lm85b) || (data->type == lm85c) ) { 1520 data->tach_mode = lm85_read_value(client, 1521 LM85_REG_TACH_MODE ); 1522 data->spinup_ctl = lm85_read_value(client, 1523 LM85_REG_SPINUP_CTL ); 1524 } else if ( (data->type == adt7463) || (data->type == adm1027) ) { 1525 if ( data->type == adt7463 ) { 1526 for (i = 0; i <= 2; ++i) { 1527 data->oppoint[i] = lm85_read_value(client, 1528 ADT7463_REG_OPPOINT(i) ); 1529 } 1530 data->tmin_ctl = lm85_read_value(client, 1531 ADT7463_REG_TMIN_CTL1 ); 1532 data->therm_limit = lm85_read_value(client, 1533 ADT7463_REG_THERM_LIMIT ); 1534 } 1535 for (i = 0; i <= 2; ++i) { 1536 data->temp_offset[i] = lm85_read_value(client, 1537 ADM1027_REG_TEMP_OFFSET(i) ); 1538 } 1539 data->tach_mode = lm85_read_value(client, 1540 ADM1027_REG_CONFIG3 ); 1541 data->fan_ppr = lm85_read_value(client, 1542 ADM1027_REG_FAN_PPR ); 1543 } 1544 1545 data->last_config = jiffies; 1546 }; /* last_config */ 1547 1548 data->valid = 1; 1549 1550 up(&data->update_lock); 1551 1552 return data; 1553 } 1554 1555 1556 static int __init sm_lm85_init(void) 1557 { 1558 return i2c_add_driver(&lm85_driver); 1559 } 1560 1561 static void __exit sm_lm85_exit(void) 1562 { 1563 i2c_del_driver(&lm85_driver); 1564 } 1565 1566 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect. 1567 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with 1568 * post 2.7.0 CVS changes. 1569 */ 1570 MODULE_LICENSE("GPL"); 1571 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com"); 1572 MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1573 1574 module_init(sm_lm85_init); 1575 module_exit(sm_lm85_exit); 1576