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 #include <linux/hwmon.h> 34 #include <linux/err.h> 35 36 /* Addresses to scan */ 37 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 38 39 /* Insmod parameters */ 40 SENSORS_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 /* i2c-vid.h defines vid_from_reg() */ 286 #define VID_FROM_REG(val,vrm) (vid_from_reg((val),(vrm))) 287 288 /* Unlike some other drivers we DO NOT set initial limits. Use 289 * the config file to set limits. Some users have reported 290 * motherboards shutting down when we set limits in a previous 291 * version of the driver. 292 */ 293 294 /* Chip sampling rates 295 * 296 * Some sensors are not updated more frequently than once per second 297 * so it doesn't make sense to read them more often than that. 298 * We cache the results and return the saved data if the driver 299 * is called again before a second has elapsed. 300 * 301 * Also, there is significant configuration data for this chip 302 * given the automatic PWM fan control that is possible. There 303 * are about 47 bytes of config data to only 22 bytes of actual 304 * readings. So, we keep the config data up to date in the cache 305 * when it is written and only sample it once every 1 *minute* 306 */ 307 #define LM85_DATA_INTERVAL (HZ + HZ / 2) 308 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ) 309 310 /* For each registered LM85, we need to keep some data in memory. That 311 data is pointed to by lm85_list[NR]->data. The structure itself is 312 dynamically allocated, at the same time when a new lm85 client is 313 allocated. */ 314 315 /* LM85 can automatically adjust fan speeds based on temperature 316 * This structure encapsulates an entire Zone config. There are 317 * three zones (one for each temperature input) on the lm85 318 */ 319 struct lm85_zone { 320 s8 limit; /* Low temp limit */ 321 u8 hyst; /* Low limit hysteresis. (0-15) */ 322 u8 range; /* Temp range, encoded */ 323 s8 critical; /* "All fans ON" temp limit */ 324 u8 off_desired; /* Actual "off" temperature specified. Preserved 325 * to prevent "drift" as other autofan control 326 * values change. 327 */ 328 u8 max_desired; /* Actual "max" temperature specified. Preserved 329 * to prevent "drift" as other autofan control 330 * values change. 331 */ 332 }; 333 334 struct lm85_autofan { 335 u8 config; /* Register value */ 336 u8 freq; /* PWM frequency, encoded */ 337 u8 min_pwm; /* Minimum PWM value, encoded */ 338 u8 min_off; /* Min PWM or OFF below "limit", flag */ 339 }; 340 341 struct lm85_data { 342 struct i2c_client client; 343 struct class_device *class_dev; 344 struct semaphore lock; 345 enum chips type; 346 347 struct semaphore update_lock; 348 int valid; /* !=0 if following fields are valid */ 349 unsigned long last_reading; /* In jiffies */ 350 unsigned long last_config; /* In jiffies */ 351 352 u8 in[8]; /* Register value */ 353 u8 in_max[8]; /* Register value */ 354 u8 in_min[8]; /* Register value */ 355 s8 temp[3]; /* Register value */ 356 s8 temp_min[3]; /* Register value */ 357 s8 temp_max[3]; /* Register value */ 358 s8 temp_offset[3]; /* Register value */ 359 u16 fan[4]; /* Register value */ 360 u16 fan_min[4]; /* Register value */ 361 u8 pwm[3]; /* Register value */ 362 u8 spinup_ctl; /* Register encoding, combined */ 363 u8 tach_mode; /* Register encoding, combined */ 364 u8 temp_ext[3]; /* Decoded values */ 365 u8 in_ext[8]; /* Decoded values */ 366 u8 adc_scale; /* ADC Extended bits scaling factor */ 367 u8 fan_ppr; /* Register value */ 368 u8 smooth[3]; /* Register encoding */ 369 u8 vid; /* Register value */ 370 u8 vrm; /* VRM version */ 371 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */ 372 u8 oppoint[3]; /* Register value */ 373 u16 tmin_ctl; /* Register value */ 374 unsigned long therm_total; /* Cummulative therm count */ 375 u8 therm_limit; /* Register value */ 376 u32 alarms; /* Register encoding, combined */ 377 struct lm85_autofan autofan[3]; 378 struct lm85_zone zone[3]; 379 }; 380 381 static int lm85_attach_adapter(struct i2c_adapter *adapter); 382 static int lm85_detect(struct i2c_adapter *adapter, int address, 383 int kind); 384 static int lm85_detach_client(struct i2c_client *client); 385 386 static int lm85_read_value(struct i2c_client *client, u8 register); 387 static int lm85_write_value(struct i2c_client *client, u8 register, int value); 388 static struct lm85_data *lm85_update_device(struct device *dev); 389 static void lm85_init_client(struct i2c_client *client); 390 391 392 static struct i2c_driver lm85_driver = { 393 .owner = THIS_MODULE, 394 .name = "lm85", 395 .id = I2C_DRIVERID_LM85, 396 .flags = I2C_DF_NOTIFY, 397 .attach_adapter = lm85_attach_adapter, 398 .detach_client = lm85_detach_client, 399 }; 400 401 402 /* 4 Fans */ 403 static ssize_t show_fan(struct device *dev, char *buf, int nr) 404 { 405 struct lm85_data *data = lm85_update_device(dev); 406 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) ); 407 } 408 static ssize_t show_fan_min(struct device *dev, char *buf, int nr) 409 { 410 struct lm85_data *data = lm85_update_device(dev); 411 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) ); 412 } 413 static ssize_t set_fan_min(struct device *dev, const char *buf, 414 size_t count, int nr) 415 { 416 struct i2c_client *client = to_i2c_client(dev); 417 struct lm85_data *data = i2c_get_clientdata(client); 418 long val = simple_strtol(buf, NULL, 10); 419 420 down(&data->update_lock); 421 data->fan_min[nr] = FAN_TO_REG(val); 422 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); 423 up(&data->update_lock); 424 return count; 425 } 426 427 #define show_fan_offset(offset) \ 428 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 429 { \ 430 return show_fan(dev, buf, offset - 1); \ 431 } \ 432 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 433 { \ 434 return show_fan_min(dev, buf, offset - 1); \ 435 } \ 436 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ 437 const char *buf, size_t count) \ 438 { \ 439 return set_fan_min(dev, buf, count, offset - 1); \ 440 } \ 441 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \ 442 NULL); \ 443 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 444 show_fan_##offset##_min, set_fan_##offset##_min); 445 446 show_fan_offset(1); 447 show_fan_offset(2); 448 show_fan_offset(3); 449 show_fan_offset(4); 450 451 /* vid, vrm, alarms */ 452 453 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) 454 { 455 struct lm85_data *data = lm85_update_device(dev); 456 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); 457 } 458 459 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 460 461 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) 462 { 463 struct lm85_data *data = lm85_update_device(dev); 464 return sprintf(buf, "%ld\n", (long) data->vrm); 465 } 466 467 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 468 { 469 struct i2c_client *client = to_i2c_client(dev); 470 struct lm85_data *data = i2c_get_clientdata(client); 471 u32 val; 472 473 val = simple_strtoul(buf, NULL, 10); 474 data->vrm = val; 475 return count; 476 } 477 478 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 479 480 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf) 481 { 482 struct lm85_data *data = lm85_update_device(dev); 483 return sprintf(buf, "%u\n", data->alarms); 484 } 485 486 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 487 488 /* pwm */ 489 490 static ssize_t show_pwm(struct device *dev, char *buf, int nr) 491 { 492 struct lm85_data *data = lm85_update_device(dev); 493 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) ); 494 } 495 static ssize_t set_pwm(struct device *dev, const char *buf, 496 size_t count, int nr) 497 { 498 struct i2c_client *client = to_i2c_client(dev); 499 struct lm85_data *data = i2c_get_clientdata(client); 500 long val = simple_strtol(buf, NULL, 10); 501 502 down(&data->update_lock); 503 data->pwm[nr] = PWM_TO_REG(val); 504 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 505 up(&data->update_lock); 506 return count; 507 } 508 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr) 509 { 510 struct lm85_data *data = lm85_update_device(dev); 511 int pwm_zone; 512 513 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 514 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) ); 515 } 516 517 #define show_pwm_reg(offset) \ 518 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 519 { \ 520 return show_pwm(dev, buf, offset - 1); \ 521 } \ 522 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \ 523 const char *buf, size_t count) \ 524 { \ 525 return set_pwm(dev, buf, count, offset - 1); \ 526 } \ 527 static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 528 { \ 529 return show_pwm_enable(dev, buf, offset - 1); \ 530 } \ 531 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 532 show_pwm_##offset, set_pwm_##offset); \ 533 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \ 534 show_pwm_enable##offset, NULL); 535 536 show_pwm_reg(1); 537 show_pwm_reg(2); 538 show_pwm_reg(3); 539 540 /* Voltages */ 541 542 static ssize_t show_in(struct device *dev, char *buf, int nr) 543 { 544 struct lm85_data *data = lm85_update_device(dev); 545 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr, 546 data->in[nr], 547 data->in_ext[nr], 548 data->adc_scale) ); 549 } 550 static ssize_t show_in_min(struct device *dev, char *buf, int nr) 551 { 552 struct lm85_data *data = lm85_update_device(dev); 553 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) ); 554 } 555 static ssize_t set_in_min(struct device *dev, const char *buf, 556 size_t count, int nr) 557 { 558 struct i2c_client *client = to_i2c_client(dev); 559 struct lm85_data *data = i2c_get_clientdata(client); 560 long val = simple_strtol(buf, NULL, 10); 561 562 down(&data->update_lock); 563 data->in_min[nr] = INS_TO_REG(nr, val); 564 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 565 up(&data->update_lock); 566 return count; 567 } 568 static ssize_t show_in_max(struct device *dev, char *buf, int nr) 569 { 570 struct lm85_data *data = lm85_update_device(dev); 571 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) ); 572 } 573 static ssize_t set_in_max(struct device *dev, const char *buf, 574 size_t count, int nr) 575 { 576 struct i2c_client *client = to_i2c_client(dev); 577 struct lm85_data *data = i2c_get_clientdata(client); 578 long val = simple_strtol(buf, NULL, 10); 579 580 down(&data->update_lock); 581 data->in_max[nr] = INS_TO_REG(nr, val); 582 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 583 up(&data->update_lock); 584 return count; 585 } 586 #define show_in_reg(offset) \ 587 static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 588 { \ 589 return show_in(dev, buf, offset); \ 590 } \ 591 static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 592 { \ 593 return show_in_min(dev, buf, offset); \ 594 } \ 595 static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 596 { \ 597 return show_in_max(dev, buf, offset); \ 598 } \ 599 static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \ 600 const char *buf, size_t count) \ 601 { \ 602 return set_in_min(dev, buf, count, offset); \ 603 } \ 604 static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \ 605 const char *buf, size_t count) \ 606 { \ 607 return set_in_max(dev, buf, count, offset); \ 608 } \ 609 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \ 610 NULL); \ 611 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 612 show_in_##offset##_min, set_in_##offset##_min); \ 613 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 614 show_in_##offset##_max, set_in_##offset##_max); 615 616 show_in_reg(0); 617 show_in_reg(1); 618 show_in_reg(2); 619 show_in_reg(3); 620 show_in_reg(4); 621 622 /* Temps */ 623 624 static ssize_t show_temp(struct device *dev, char *buf, int nr) 625 { 626 struct lm85_data *data = lm85_update_device(dev); 627 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr], 628 data->temp_ext[nr], 629 data->adc_scale) ); 630 } 631 static ssize_t show_temp_min(struct device *dev, char *buf, int nr) 632 { 633 struct lm85_data *data = lm85_update_device(dev); 634 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) ); 635 } 636 static ssize_t set_temp_min(struct device *dev, const char *buf, 637 size_t count, int nr) 638 { 639 struct i2c_client *client = to_i2c_client(dev); 640 struct lm85_data *data = i2c_get_clientdata(client); 641 long val = simple_strtol(buf, NULL, 10); 642 643 down(&data->update_lock); 644 data->temp_min[nr] = TEMP_TO_REG(val); 645 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 646 up(&data->update_lock); 647 return count; 648 } 649 static ssize_t show_temp_max(struct device *dev, char *buf, int nr) 650 { 651 struct lm85_data *data = lm85_update_device(dev); 652 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) ); 653 } 654 static ssize_t set_temp_max(struct device *dev, const char *buf, 655 size_t count, int nr) 656 { 657 struct i2c_client *client = to_i2c_client(dev); 658 struct lm85_data *data = i2c_get_clientdata(client); 659 long val = simple_strtol(buf, NULL, 10); 660 661 down(&data->update_lock); 662 data->temp_max[nr] = TEMP_TO_REG(val); 663 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 664 up(&data->update_lock); 665 return count; 666 } 667 #define show_temp_reg(offset) \ 668 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 669 { \ 670 return show_temp(dev, buf, offset - 1); \ 671 } \ 672 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 673 { \ 674 return show_temp_min(dev, buf, offset - 1); \ 675 } \ 676 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 677 { \ 678 return show_temp_max(dev, buf, offset - 1); \ 679 } \ 680 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \ 681 const char *buf, size_t count) \ 682 { \ 683 return set_temp_min(dev, buf, count, offset - 1); \ 684 } \ 685 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \ 686 const char *buf, size_t count) \ 687 { \ 688 return set_temp_max(dev, buf, count, offset - 1); \ 689 } \ 690 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \ 691 NULL); \ 692 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 693 show_temp_##offset##_min, set_temp_##offset##_min); \ 694 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 695 show_temp_##offset##_max, set_temp_##offset##_max); 696 697 show_temp_reg(1); 698 show_temp_reg(2); 699 show_temp_reg(3); 700 701 702 /* Automatic PWM control */ 703 704 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr) 705 { 706 struct lm85_data *data = lm85_update_device(dev); 707 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config)); 708 } 709 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf, 710 size_t count, int nr) 711 { 712 struct i2c_client *client = to_i2c_client(dev); 713 struct lm85_data *data = i2c_get_clientdata(client); 714 long val = simple_strtol(buf, NULL, 10); 715 716 down(&data->update_lock); 717 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 718 | ZONE_TO_REG(val) ; 719 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 720 data->autofan[nr].config); 721 up(&data->update_lock); 722 return count; 723 } 724 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr) 725 { 726 struct lm85_data *data = lm85_update_device(dev); 727 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 728 } 729 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf, 730 size_t count, int nr) 731 { 732 struct i2c_client *client = to_i2c_client(dev); 733 struct lm85_data *data = i2c_get_clientdata(client); 734 long val = simple_strtol(buf, NULL, 10); 735 736 down(&data->update_lock); 737 data->autofan[nr].min_pwm = PWM_TO_REG(val); 738 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), 739 data->autofan[nr].min_pwm); 740 up(&data->update_lock); 741 return count; 742 } 743 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr) 744 { 745 struct lm85_data *data = lm85_update_device(dev); 746 return sprintf(buf,"%d\n", data->autofan[nr].min_off); 747 } 748 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf, 749 size_t count, int nr) 750 { 751 struct i2c_client *client = to_i2c_client(dev); 752 struct lm85_data *data = i2c_get_clientdata(client); 753 long val = simple_strtol(buf, NULL, 10); 754 755 down(&data->update_lock); 756 data->autofan[nr].min_off = val; 757 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0] 758 | data->syncpwm3 759 | (data->autofan[0].min_off ? 0x20 : 0) 760 | (data->autofan[1].min_off ? 0x40 : 0) 761 | (data->autofan[2].min_off ? 0x80 : 0) 762 ); 763 up(&data->update_lock); 764 return count; 765 } 766 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr) 767 { 768 struct lm85_data *data = lm85_update_device(dev); 769 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq)); 770 } 771 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf, 772 size_t count, int nr) 773 { 774 struct i2c_client *client = to_i2c_client(dev); 775 struct lm85_data *data = i2c_get_clientdata(client); 776 long val = simple_strtol(buf, NULL, 10); 777 778 down(&data->update_lock); 779 data->autofan[nr].freq = FREQ_TO_REG(val); 780 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 781 (data->zone[nr].range << 4) 782 | data->autofan[nr].freq 783 ); 784 up(&data->update_lock); 785 return count; 786 } 787 #define pwm_auto(offset) \ 788 static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 789 char *buf) \ 790 { \ 791 return show_pwm_auto_channels(dev, buf, offset - 1); \ 792 } \ 793 static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 794 const char *buf, size_t count) \ 795 { \ 796 return set_pwm_auto_channels(dev, buf, count, offset - 1); \ 797 } \ 798 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 799 char *buf) \ 800 { \ 801 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \ 802 } \ 803 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 804 const char *buf, size_t count) \ 805 { \ 806 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \ 807 } \ 808 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 809 char *buf) \ 810 { \ 811 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \ 812 } \ 813 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 814 const char *buf, size_t count) \ 815 { \ 816 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \ 817 } \ 818 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \ 819 char *buf) \ 820 { \ 821 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \ 822 } \ 823 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \ 824 const char *buf, size_t count) \ 825 { \ 826 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \ 827 } \ 828 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \ 829 show_pwm##offset##_auto_channels, \ 830 set_pwm##offset##_auto_channels); \ 831 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \ 832 show_pwm##offset##_auto_pwm_min, \ 833 set_pwm##offset##_auto_pwm_min); \ 834 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \ 835 show_pwm##offset##_auto_pwm_minctl, \ 836 set_pwm##offset##_auto_pwm_minctl); \ 837 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \ 838 show_pwm##offset##_auto_pwm_freq, \ 839 set_pwm##offset##_auto_pwm_freq); 840 pwm_auto(1); 841 pwm_auto(2); 842 pwm_auto(3); 843 844 /* Temperature settings for automatic PWM control */ 845 846 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr) 847 { 848 struct lm85_data *data = lm85_update_device(dev); 849 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 850 HYST_FROM_REG(data->zone[nr].hyst)); 851 } 852 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf, 853 size_t count, int nr) 854 { 855 struct i2c_client *client = to_i2c_client(dev); 856 struct lm85_data *data = i2c_get_clientdata(client); 857 int min; 858 long val = simple_strtol(buf, NULL, 10); 859 860 down(&data->update_lock); 861 min = TEMP_FROM_REG(data->zone[nr].limit); 862 data->zone[nr].off_desired = TEMP_TO_REG(val); 863 data->zone[nr].hyst = HYST_TO_REG(min - val); 864 if ( nr == 0 || nr == 1 ) { 865 lm85_write_value(client, LM85_REG_AFAN_HYST1, 866 (data->zone[0].hyst << 4) 867 | data->zone[1].hyst 868 ); 869 } else { 870 lm85_write_value(client, LM85_REG_AFAN_HYST2, 871 (data->zone[2].hyst << 4) 872 ); 873 } 874 up(&data->update_lock); 875 return count; 876 } 877 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr) 878 { 879 struct lm85_data *data = lm85_update_device(dev); 880 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) ); 881 } 882 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf, 883 size_t count, int nr) 884 { 885 struct i2c_client *client = to_i2c_client(dev); 886 struct lm85_data *data = i2c_get_clientdata(client); 887 long val = simple_strtol(buf, NULL, 10); 888 889 down(&data->update_lock); 890 data->zone[nr].limit = TEMP_TO_REG(val); 891 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 892 data->zone[nr].limit); 893 894 /* Update temp_auto_max and temp_auto_range */ 895 data->zone[nr].range = RANGE_TO_REG( 896 TEMP_FROM_REG(data->zone[nr].max_desired) - 897 TEMP_FROM_REG(data->zone[nr].limit)); 898 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 899 ((data->zone[nr].range & 0x0f) << 4) 900 | (data->autofan[nr].freq & 0x07)); 901 902 /* Update temp_auto_hyst and temp_auto_off */ 903 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 904 data->zone[nr].limit) - TEMP_FROM_REG( 905 data->zone[nr].off_desired)); 906 if ( nr == 0 || nr == 1 ) { 907 lm85_write_value(client, LM85_REG_AFAN_HYST1, 908 (data->zone[0].hyst << 4) 909 | data->zone[1].hyst 910 ); 911 } else { 912 lm85_write_value(client, LM85_REG_AFAN_HYST2, 913 (data->zone[2].hyst << 4) 914 ); 915 } 916 up(&data->update_lock); 917 return count; 918 } 919 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr) 920 { 921 struct lm85_data *data = lm85_update_device(dev); 922 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 923 RANGE_FROM_REG(data->zone[nr].range)); 924 } 925 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf, 926 size_t count, int nr) 927 { 928 struct i2c_client *client = to_i2c_client(dev); 929 struct lm85_data *data = i2c_get_clientdata(client); 930 int min; 931 long val = simple_strtol(buf, NULL, 10); 932 933 down(&data->update_lock); 934 min = TEMP_FROM_REG(data->zone[nr].limit); 935 data->zone[nr].max_desired = TEMP_TO_REG(val); 936 data->zone[nr].range = RANGE_TO_REG( 937 val - min); 938 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 939 ((data->zone[nr].range & 0x0f) << 4) 940 | (data->autofan[nr].freq & 0x07)); 941 up(&data->update_lock); 942 return count; 943 } 944 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr) 945 { 946 struct lm85_data *data = lm85_update_device(dev); 947 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 948 } 949 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf, 950 size_t count, int nr) 951 { 952 struct i2c_client *client = to_i2c_client(dev); 953 struct lm85_data *data = i2c_get_clientdata(client); 954 long val = simple_strtol(buf, NULL, 10); 955 956 down(&data->update_lock); 957 data->zone[nr].critical = TEMP_TO_REG(val); 958 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 959 data->zone[nr].critical); 960 up(&data->update_lock); 961 return count; 962 } 963 #define temp_auto(offset) \ 964 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 965 char *buf) \ 966 { \ 967 return show_temp_auto_temp_off(dev, buf, offset - 1); \ 968 } \ 969 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 970 const char *buf, size_t count) \ 971 { \ 972 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \ 973 } \ 974 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 975 char *buf) \ 976 { \ 977 return show_temp_auto_temp_min(dev, buf, offset - 1); \ 978 } \ 979 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 980 const char *buf, size_t count) \ 981 { \ 982 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \ 983 } \ 984 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 985 char *buf) \ 986 { \ 987 return show_temp_auto_temp_max(dev, buf, offset - 1); \ 988 } \ 989 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 990 const char *buf, size_t count) \ 991 { \ 992 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \ 993 } \ 994 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 995 char *buf) \ 996 { \ 997 return show_temp_auto_temp_crit(dev, buf, offset - 1); \ 998 } \ 999 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 1000 const char *buf, size_t count) \ 1001 { \ 1002 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \ 1003 } \ 1004 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \ 1005 show_temp##offset##_auto_temp_off, \ 1006 set_temp##offset##_auto_temp_off); \ 1007 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \ 1008 show_temp##offset##_auto_temp_min, \ 1009 set_temp##offset##_auto_temp_min); \ 1010 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \ 1011 show_temp##offset##_auto_temp_max, \ 1012 set_temp##offset##_auto_temp_max); \ 1013 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \ 1014 show_temp##offset##_auto_temp_crit, \ 1015 set_temp##offset##_auto_temp_crit); 1016 temp_auto(1); 1017 temp_auto(2); 1018 temp_auto(3); 1019 1020 int lm85_attach_adapter(struct i2c_adapter *adapter) 1021 { 1022 if (!(adapter->class & I2C_CLASS_HWMON)) 1023 return 0; 1024 return i2c_detect(adapter, &addr_data, lm85_detect); 1025 } 1026 1027 int lm85_detect(struct i2c_adapter *adapter, int address, 1028 int kind) 1029 { 1030 int company, verstep ; 1031 struct i2c_client *new_client = NULL; 1032 struct lm85_data *data; 1033 int err = 0; 1034 const char *type_name = ""; 1035 1036 if (!i2c_check_functionality(adapter, 1037 I2C_FUNC_SMBUS_BYTE_DATA)) { 1038 /* We need to be able to do byte I/O */ 1039 goto ERROR0 ; 1040 }; 1041 1042 /* OK. For now, we presume we have a valid client. We now create the 1043 client structure, even though we cannot fill it completely yet. 1044 But it allows us to access lm85_{read,write}_value. */ 1045 1046 if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) { 1047 err = -ENOMEM; 1048 goto ERROR0; 1049 } 1050 memset(data, 0, sizeof(struct lm85_data)); 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 init_MUTEX(&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 = i2c_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_in4_input); 1191 device_create_file(&new_client->dev, &dev_attr_in0_min); 1192 device_create_file(&new_client->dev, &dev_attr_in1_min); 1193 device_create_file(&new_client->dev, &dev_attr_in2_min); 1194 device_create_file(&new_client->dev, &dev_attr_in3_min); 1195 device_create_file(&new_client->dev, &dev_attr_in4_min); 1196 device_create_file(&new_client->dev, &dev_attr_in0_max); 1197 device_create_file(&new_client->dev, &dev_attr_in1_max); 1198 device_create_file(&new_client->dev, &dev_attr_in2_max); 1199 device_create_file(&new_client->dev, &dev_attr_in3_max); 1200 device_create_file(&new_client->dev, &dev_attr_in4_max); 1201 device_create_file(&new_client->dev, &dev_attr_temp1_input); 1202 device_create_file(&new_client->dev, &dev_attr_temp2_input); 1203 device_create_file(&new_client->dev, &dev_attr_temp3_input); 1204 device_create_file(&new_client->dev, &dev_attr_temp1_min); 1205 device_create_file(&new_client->dev, &dev_attr_temp2_min); 1206 device_create_file(&new_client->dev, &dev_attr_temp3_min); 1207 device_create_file(&new_client->dev, &dev_attr_temp1_max); 1208 device_create_file(&new_client->dev, &dev_attr_temp2_max); 1209 device_create_file(&new_client->dev, &dev_attr_temp3_max); 1210 device_create_file(&new_client->dev, &dev_attr_vrm); 1211 device_create_file(&new_client->dev, &dev_attr_cpu0_vid); 1212 device_create_file(&new_client->dev, &dev_attr_alarms); 1213 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels); 1214 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels); 1215 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels); 1216 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min); 1217 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min); 1218 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min); 1219 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl); 1220 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl); 1221 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl); 1222 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq); 1223 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq); 1224 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq); 1225 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off); 1226 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off); 1227 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off); 1228 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min); 1229 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min); 1230 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min); 1231 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max); 1232 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max); 1233 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max); 1234 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit); 1235 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit); 1236 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit); 1237 1238 return 0; 1239 1240 /* Error out and cleanup code */ 1241 ERROR2: 1242 i2c_detach_client(new_client); 1243 ERROR1: 1244 kfree(data); 1245 ERROR0: 1246 return err; 1247 } 1248 1249 int lm85_detach_client(struct i2c_client *client) 1250 { 1251 struct lm85_data *data = i2c_get_clientdata(client); 1252 hwmon_device_unregister(data->class_dev); 1253 i2c_detach_client(client); 1254 kfree(data); 1255 return 0; 1256 } 1257 1258 1259 int lm85_read_value(struct i2c_client *client, u8 reg) 1260 { 1261 int res; 1262 1263 /* What size location is it? */ 1264 switch( reg ) { 1265 case LM85_REG_FAN(0) : /* Read WORD data */ 1266 case LM85_REG_FAN(1) : 1267 case LM85_REG_FAN(2) : 1268 case LM85_REG_FAN(3) : 1269 case LM85_REG_FAN_MIN(0) : 1270 case LM85_REG_FAN_MIN(1) : 1271 case LM85_REG_FAN_MIN(2) : 1272 case LM85_REG_FAN_MIN(3) : 1273 case LM85_REG_ALARM1 : /* Read both bytes at once */ 1274 res = i2c_smbus_read_byte_data(client, reg) & 0xff ; 1275 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ; 1276 break ; 1277 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */ 1278 res = i2c_smbus_read_byte_data(client, reg) << 8 ; 1279 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ; 1280 break ; 1281 default: /* Read BYTE data */ 1282 res = i2c_smbus_read_byte_data(client, reg); 1283 break ; 1284 } 1285 1286 return res ; 1287 } 1288 1289 int lm85_write_value(struct i2c_client *client, u8 reg, int value) 1290 { 1291 int res ; 1292 1293 switch( reg ) { 1294 case LM85_REG_FAN(0) : /* Write WORD data */ 1295 case LM85_REG_FAN(1) : 1296 case LM85_REG_FAN(2) : 1297 case LM85_REG_FAN(3) : 1298 case LM85_REG_FAN_MIN(0) : 1299 case LM85_REG_FAN_MIN(1) : 1300 case LM85_REG_FAN_MIN(2) : 1301 case LM85_REG_FAN_MIN(3) : 1302 /* NOTE: ALARM is read only, so not included here */ 1303 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ; 1304 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ; 1305 break ; 1306 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */ 1307 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff); 1308 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ; 1309 break ; 1310 default: /* Write BYTE data */ 1311 res = i2c_smbus_write_byte_data(client, reg, value); 1312 break ; 1313 } 1314 1315 return res ; 1316 } 1317 1318 void lm85_init_client(struct i2c_client *client) 1319 { 1320 int value; 1321 struct lm85_data *data = i2c_get_clientdata(client); 1322 1323 dev_dbg(&client->dev, "Initializing device\n"); 1324 1325 /* Warn if part was not "READY" */ 1326 value = lm85_read_value(client, LM85_REG_CONFIG); 1327 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value); 1328 if( value & 0x02 ) { 1329 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n", 1330 i2c_adapter_id(client->adapter), client->addr ); 1331 }; 1332 if( ! (value & 0x04) ) { 1333 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n", 1334 i2c_adapter_id(client->adapter), client->addr ); 1335 }; 1336 if( value & 0x10 1337 && ( data->type == adm1027 1338 || data->type == adt7463 ) ) { 1339 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. " 1340 "Please report this to the lm85 maintainer.\n", 1341 i2c_adapter_id(client->adapter), client->addr ); 1342 }; 1343 1344 /* WE INTENTIONALLY make no changes to the limits, 1345 * offsets, pwms, fans and zones. If they were 1346 * configured, we don't want to mess with them. 1347 * If they weren't, the default is 100% PWM, no 1348 * control and will suffice until 'sensors -s' 1349 * can be run by the user. 1350 */ 1351 1352 /* Start monitoring */ 1353 value = lm85_read_value(client, LM85_REG_CONFIG); 1354 /* Try to clear LOCK, Set START, save everything else */ 1355 value = (value & ~ 0x02) | 0x01 ; 1356 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value); 1357 lm85_write_value(client, LM85_REG_CONFIG, value); 1358 } 1359 1360 static struct lm85_data *lm85_update_device(struct device *dev) 1361 { 1362 struct i2c_client *client = to_i2c_client(dev); 1363 struct lm85_data *data = i2c_get_clientdata(client); 1364 int i; 1365 1366 down(&data->update_lock); 1367 1368 if ( !data->valid || 1369 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) { 1370 /* Things that change quickly */ 1371 dev_dbg(&client->dev, "Reading sensor values\n"); 1372 1373 /* Have to read extended bits first to "freeze" the 1374 * more significant bits that are read later. 1375 */ 1376 if ( (data->type == adm1027) || (data->type == adt7463) ) { 1377 int ext1 = lm85_read_value(client, 1378 ADM1027_REG_EXTEND_ADC1); 1379 int ext2 = lm85_read_value(client, 1380 ADM1027_REG_EXTEND_ADC2); 1381 int val = (ext1 << 8) + ext2; 1382 1383 for(i = 0; i <= 4; i++) 1384 data->in_ext[i] = (val>>(i * 2))&0x03; 1385 1386 for(i = 0; i <= 2; i++) 1387 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03; 1388 } 1389 1390 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in 1391 the emc6d102 and 2 in the adt7463 and adm1027. In all 1392 other chips ext is always 0 and the value of scale is 1393 irrelevant. So it is left in 4*/ 1394 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4; 1395 1396 for (i = 0; i <= 4; ++i) { 1397 data->in[i] = 1398 lm85_read_value(client, LM85_REG_IN(i)); 1399 } 1400 1401 for (i = 0; i <= 3; ++i) { 1402 data->fan[i] = 1403 lm85_read_value(client, LM85_REG_FAN(i)); 1404 } 1405 1406 for (i = 0; i <= 2; ++i) { 1407 data->temp[i] = 1408 lm85_read_value(client, LM85_REG_TEMP(i)); 1409 } 1410 1411 for (i = 0; i <= 2; ++i) { 1412 data->pwm[i] = 1413 lm85_read_value(client, LM85_REG_PWM(i)); 1414 } 1415 1416 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1417 1418 if ( data->type == adt7463 ) { 1419 if( data->therm_total < ULONG_MAX - 256 ) { 1420 data->therm_total += 1421 lm85_read_value(client, ADT7463_REG_THERM ); 1422 } 1423 } else if ( data->type == emc6d100 ) { 1424 /* Three more voltage sensors */ 1425 for (i = 5; i <= 7; ++i) { 1426 data->in[i] = 1427 lm85_read_value(client, EMC6D100_REG_IN(i)); 1428 } 1429 /* More alarm bits */ 1430 data->alarms |= 1431 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16; 1432 } else if (data->type == emc6d102 ) { 1433 /* Have to read LSB bits after the MSB ones because 1434 the reading of the MSB bits has frozen the 1435 LSBs (backward from the ADM1027). 1436 */ 1437 int ext1 = lm85_read_value(client, 1438 EMC6D102_REG_EXTEND_ADC1); 1439 int ext2 = lm85_read_value(client, 1440 EMC6D102_REG_EXTEND_ADC2); 1441 int ext3 = lm85_read_value(client, 1442 EMC6D102_REG_EXTEND_ADC3); 1443 int ext4 = lm85_read_value(client, 1444 EMC6D102_REG_EXTEND_ADC4); 1445 data->in_ext[0] = ext3 & 0x0f; 1446 data->in_ext[1] = ext4 & 0x0f; 1447 data->in_ext[2] = (ext4 >> 4) & 0x0f; 1448 data->in_ext[3] = (ext3 >> 4) & 0x0f; 1449 data->in_ext[4] = (ext2 >> 4) & 0x0f; 1450 1451 data->temp_ext[0] = ext1 & 0x0f; 1452 data->temp_ext[1] = ext2 & 0x0f; 1453 data->temp_ext[2] = (ext1 >> 4) & 0x0f; 1454 } 1455 1456 data->last_reading = jiffies ; 1457 }; /* last_reading */ 1458 1459 if ( !data->valid || 1460 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) { 1461 /* Things that don't change often */ 1462 dev_dbg(&client->dev, "Reading config values\n"); 1463 1464 for (i = 0; i <= 4; ++i) { 1465 data->in_min[i] = 1466 lm85_read_value(client, LM85_REG_IN_MIN(i)); 1467 data->in_max[i] = 1468 lm85_read_value(client, LM85_REG_IN_MAX(i)); 1469 } 1470 1471 if ( data->type == emc6d100 ) { 1472 for (i = 5; i <= 7; ++i) { 1473 data->in_min[i] = 1474 lm85_read_value(client, EMC6D100_REG_IN_MIN(i)); 1475 data->in_max[i] = 1476 lm85_read_value(client, EMC6D100_REG_IN_MAX(i)); 1477 } 1478 } 1479 1480 for (i = 0; i <= 3; ++i) { 1481 data->fan_min[i] = 1482 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1483 } 1484 1485 for (i = 0; i <= 2; ++i) { 1486 data->temp_min[i] = 1487 lm85_read_value(client, LM85_REG_TEMP_MIN(i)); 1488 data->temp_max[i] = 1489 lm85_read_value(client, LM85_REG_TEMP_MAX(i)); 1490 } 1491 1492 data->vid = lm85_read_value(client, LM85_REG_VID); 1493 1494 for (i = 0; i <= 2; ++i) { 1495 int val ; 1496 data->autofan[i].config = 1497 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1498 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1499 data->autofan[i].freq = val & 0x07 ; 1500 data->zone[i].range = (val >> 4) & 0x0f ; 1501 data->autofan[i].min_pwm = 1502 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1503 data->zone[i].limit = 1504 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1505 data->zone[i].critical = 1506 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1507 } 1508 1509 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1510 data->smooth[0] = i & 0x0f ; 1511 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */ 1512 data->autofan[0].min_off = (i & 0x20) != 0 ; 1513 data->autofan[1].min_off = (i & 0x40) != 0 ; 1514 data->autofan[2].min_off = (i & 0x80) != 0 ; 1515 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2); 1516 data->smooth[1] = (i>>4) & 0x0f ; 1517 data->smooth[2] = i & 0x0f ; 1518 1519 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1520 data->zone[0].hyst = (i>>4) & 0x0f ; 1521 data->zone[1].hyst = i & 0x0f ; 1522 1523 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1524 data->zone[2].hyst = (i>>4) & 0x0f ; 1525 1526 if ( (data->type == lm85b) || (data->type == lm85c) ) { 1527 data->tach_mode = lm85_read_value(client, 1528 LM85_REG_TACH_MODE ); 1529 data->spinup_ctl = lm85_read_value(client, 1530 LM85_REG_SPINUP_CTL ); 1531 } else if ( (data->type == adt7463) || (data->type == adm1027) ) { 1532 if ( data->type == adt7463 ) { 1533 for (i = 0; i <= 2; ++i) { 1534 data->oppoint[i] = lm85_read_value(client, 1535 ADT7463_REG_OPPOINT(i) ); 1536 } 1537 data->tmin_ctl = lm85_read_value(client, 1538 ADT7463_REG_TMIN_CTL1 ); 1539 data->therm_limit = lm85_read_value(client, 1540 ADT7463_REG_THERM_LIMIT ); 1541 } 1542 for (i = 0; i <= 2; ++i) { 1543 data->temp_offset[i] = lm85_read_value(client, 1544 ADM1027_REG_TEMP_OFFSET(i) ); 1545 } 1546 data->tach_mode = lm85_read_value(client, 1547 ADM1027_REG_CONFIG3 ); 1548 data->fan_ppr = lm85_read_value(client, 1549 ADM1027_REG_FAN_PPR ); 1550 } 1551 1552 data->last_config = jiffies; 1553 }; /* last_config */ 1554 1555 data->valid = 1; 1556 1557 up(&data->update_lock); 1558 1559 return data; 1560 } 1561 1562 1563 static int __init sm_lm85_init(void) 1564 { 1565 return i2c_add_driver(&lm85_driver); 1566 } 1567 1568 static void __exit sm_lm85_exit(void) 1569 { 1570 i2c_del_driver(&lm85_driver); 1571 } 1572 1573 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect. 1574 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with 1575 * post 2.7.0 CVS changes. 1576 */ 1577 MODULE_LICENSE("GPL"); 1578 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com"); 1579 MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1580 1581 module_init(sm_lm85_init); 1582 module_exit(sm_lm85_exit); 1583