drivers/hwmon/f75375s.c

   1 /*
   2  * f75375s.c - driver for the Fintek F75375/SP and F75373
   3  *             hardware monitoring features
   4  * Copyright (C) 2006-2007  Riku Voipio <riku.voipio@movial.fi>
   5  *
   6  * Datasheets available at:
   7  *
   8  * f75375:
   9  * http://www.fintek.com.tw/files/productfiles/2005111152950.pdf
  10  *
  11  * f75373:
  12  * http://www.fintek.com.tw/files/productfiles/2005111153128.pdf
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  *
  28  */
  29
  30 #include <linux/module.h>
  31 #include <linux/jiffies.h>
  32 #include <linux/hwmon.h>
  33 #include <linux/hwmon-sysfs.h>
  34 #include <linux/i2c.h>
  35 #include <linux/err.h>
  36 #include <linux/mutex.h>
  37 #include <linux/f75375s.h>
  38
  39 /* Addresses to scan */
  40 static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
  41
  42 /* Insmod parameters */
  43 I2C_CLIENT_INSMOD_2(f75373, f75375);
  44
  45 /* Fintek F75375 registers  */
  46 #define F75375_REG_CONFIG0              0x0
  47 #define F75375_REG_CONFIG1              0x1
  48 #define F75375_REG_CONFIG2              0x2
  49 #define F75375_REG_CONFIG3              0x3
  50 #define F75375_REG_ADDR                 0x4
  51 #define F75375_REG_INTR                 0x31
  52 #define F75375_CHIP_ID                  0x5A
  53 #define F75375_REG_VERSION              0x5C
  54 #define F75375_REG_VENDOR               0x5D
  55 #define F75375_REG_FAN_TIMER            0x60
  56
  57 #define F75375_REG_VOLT(nr)             (0x10 + (nr))
  58 #define F75375_REG_VOLT_HIGH(nr)        (0x20 + (nr) * 2)
  59 #define F75375_REG_VOLT_LOW(nr)         (0x21 + (nr) * 2)
  60
  61 #define F75375_REG_TEMP(nr)             (0x14 + (nr))
  62 #define F75375_REG_TEMP_HIGH(nr)        (0x28 + (nr) * 2)
  63 #define F75375_REG_TEMP_HYST(nr)        (0x29 + (nr) * 2)
  64
  65 #define F75375_REG_FAN(nr)              (0x16 + (nr) * 2)
  66 #define F75375_REG_FAN_MIN(nr)          (0x2C + (nr) * 2)
  67 #define F75375_REG_FAN_FULL(nr)         (0x70 + (nr) * 0x10)
  68 #define F75375_REG_FAN_PWM_DUTY(nr)     (0x76 + (nr) * 0x10)
  69 #define F75375_REG_FAN_PWM_CLOCK(nr)    (0x7D + (nr) * 0x10)
  70
  71 #define F75375_REG_FAN_EXP(nr)          (0x74 + (nr) * 0x10)
  72 #define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step))
  73 #define F75375_REG_FAN_B_SPEED(nr, step) \
  74         ((0xA5 + (nr) * 0x10) + (step) * 2)
  75
  76 #define F75375_REG_PWM1_RAISE_DUTY      0x69
  77 #define F75375_REG_PWM2_RAISE_DUTY      0x6A
  78 #define F75375_REG_PWM1_DROP_DUTY       0x6B
  79 #define F75375_REG_PWM2_DROP_DUTY       0x6C
  80
  81 #define FAN_CTRL_LINEAR(nr)             (4 + nr)
  82 #define FAN_CTRL_MODE(nr)               (5 + ((nr) * 2))
  83
  84 /*
  85  * Data structures and manipulation thereof
  86  */
  87
  88 struct f75375_data {
  89         unsigned short addr;
  90         struct i2c_client *client;
  91         struct device *hwmon_dev;
  92
  93         const char *name;
  94         int kind;
  95         struct mutex update_lock; /* protect register access */
  96         char valid;
  97         unsigned long last_updated;     /* In jiffies */
  98         unsigned long last_limits;      /* In jiffies */
  99
 100         /* Register values */
 101         u8 in[4];
 102         u8 in_max[4];
 103         u8 in_min[4];
 104         u16 fan[2];
 105         u16 fan_min[2];
 106         u16 fan_full[2];
 107         u16 fan_exp[2];
 108         u8 fan_timer;
 109         u8 pwm[2];
 110         u8 pwm_mode[2];
 111         u8 pwm_enable[2];
 112         s8 temp[2];
 113         s8 temp_high[2];
 114         s8 temp_max_hyst[2];
 115 };
 116
 117 static int f75375_attach_adapter(struct i2c_adapter *adapter);
 118 static int f75375_detect(struct i2c_adapter *adapter, int address, int kind);
 119 static int f75375_detach_client(struct i2c_client *client);
 120 static int f75375_probe(struct i2c_client *client,
 121                         const struct i2c_device_id *id);
 122 static int f75375_remove(struct i2c_client *client);
 123
 124 static struct i2c_driver f75375_legacy_driver = {
 125         .driver = {
 126                 .name = "f75375_legacy",
 127         },
 128         .attach_adapter = f75375_attach_adapter,
 129         .detach_client = f75375_detach_client,
 130 };
 131
 132 static const struct i2c_device_id f75375_id[] = {
 133         { "f75373", f75373 },
 134         { "f75375", f75375 },
 135         { }
 136 };
 137 MODULE_DEVICE_TABLE(i2c, f75375_id);
 138
 139 static struct i2c_driver f75375_driver = {
 140         .driver = {
 141                 .name = "f75375",
 142         },
 143         .probe = f75375_probe,
 144         .remove = f75375_remove,
 145         .id_table = f75375_id,
 146 };
 147
 148 static inline int f75375_read8(struct i2c_client *client, u8 reg)
 149 {
 150         return i2c_smbus_read_byte_data(client, reg);
 151 }
 152
 153 /* in most cases, should be called while holding update_lock */
 154 static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
 155 {
 156         return ((i2c_smbus_read_byte_data(client, reg) << 8)
 157                 | i2c_smbus_read_byte_data(client, reg + 1));
 158 }
 159
 160 static inline void f75375_write8(struct i2c_client *client, u8 reg,
 161                 u8 value)
 162 {
 163         i2c_smbus_write_byte_data(client, reg, value);
 164 }
 165
 166 static inline void f75375_write16(struct i2c_client *client, u8 reg,
 167                 u16 value)
 168 {
 169         int err = i2c_smbus_write_byte_data(client, reg, (value << 8));
 170         if (err)
 171                 return;
 172         i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
 173 }
 174
 175 static struct f75375_data *f75375_update_device(struct device *dev)
 176 {
 177         struct i2c_client *client = to_i2c_client(dev);
 178         struct f75375_data *data = i2c_get_clientdata(client);
 179         int nr;
 180
 181         mutex_lock(&data->update_lock);
 182
 183         /* Limit registers cache is refreshed after 60 seconds */
 184         if (time_after(jiffies, data->last_limits + 60 * HZ)
 185                 || !data->valid) {
 186                 for (nr = 0; nr < 2; nr++) {
 187                         data->temp_high[nr] =
 188                                 f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
 189                         data->temp_max_hyst[nr] =
 190                                 f75375_read8(client, F75375_REG_TEMP_HYST(nr));
 191                         data->fan_full[nr] =
 192                                 f75375_read16(client, F75375_REG_FAN_FULL(nr));
 193                         data->fan_min[nr] =
 194                                 f75375_read16(client, F75375_REG_FAN_MIN(nr));
 195                         data->fan_exp[nr] =
 196                                 f75375_read16(client, F75375_REG_FAN_EXP(nr));
 197                         data->pwm[nr] = f75375_read8(client,
 198                                 F75375_REG_FAN_PWM_DUTY(nr));
 199
 200                 }
 201                 for (nr = 0; nr < 4; nr++) {
 202                         data->in_max[nr] =
 203                                 f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
 204                         data->in_min[nr] =
 205                                 f75375_read8(client, F75375_REG_VOLT_LOW(nr));
 206                 }
 207                 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
 208                 data->last_limits = jiffies;
 209         }
 210
 211         /* Measurement registers cache is refreshed after 2 second */
 212         if (time_after(jiffies, data->last_updated + 2 * HZ)
 213                 || !data->valid) {
 214                 for (nr = 0; nr < 2; nr++) {
 215                         data->temp[nr] =
 216                                 f75375_read8(client, F75375_REG_TEMP(nr));
 217                         data->fan[nr] =
 218                                 f75375_read16(client, F75375_REG_FAN(nr));
 219                 }
 220                 for (nr = 0; nr < 4; nr++)
 221                         data->in[nr] =
 222                                 f75375_read8(client, F75375_REG_VOLT(nr));
 223
 224                 data->last_updated = jiffies;
 225                 data->valid = 1;
 226         }
 227
 228         mutex_unlock(&data->update_lock);
 229         return data;
 230 }
 231
 232 static inline u16 rpm_from_reg(u16 reg)
 233 {
 234         if (reg == 0 || reg == 0xffff)
 235                 return 0;
 236         return (1500000 / reg);
 237 }
 238
 239 static inline u16 rpm_to_reg(int rpm)
 240 {
 241         if (rpm < 367 || rpm > 0xffff)
 242                 return 0xffff;
 243         return (1500000 / rpm);
 244 }
 245
 246 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 247                 const char *buf, size_t count)
 248 {
 249         int nr = to_sensor_dev_attr(attr)->index;
 250         struct i2c_client *client = to_i2c_client(dev);
 251         struct f75375_data *data = i2c_get_clientdata(client);
 252         int val = simple_strtoul(buf, NULL, 10);
 253
 254         mutex_lock(&data->update_lock);
 255         data->fan_min[nr] = rpm_to_reg(val);
 256         f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
 257         mutex_unlock(&data->update_lock);
 258         return count;
 259 }
 260
 261 static ssize_t set_fan_exp(struct device *dev, struct device_attribute *attr,
 262                 const char *buf, size_t count)
 263 {
 264         int nr = to_sensor_dev_attr(attr)->index;
 265         struct i2c_client *client = to_i2c_client(dev);
 266         struct f75375_data *data = i2c_get_clientdata(client);
 267         int val = simple_strtoul(buf, NULL, 10);
 268
 269         mutex_lock(&data->update_lock);
 270         data->fan_exp[nr] = rpm_to_reg(val);
 271         f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_exp[nr]);
 272         mutex_unlock(&data->update_lock);
 273         return count;
 274 }
 275
 276 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 277                 const char *buf, size_t count)
 278 {
 279         int nr = to_sensor_dev_attr(attr)->index;
 280         struct i2c_client *client = to_i2c_client(dev);
 281         struct f75375_data *data = i2c_get_clientdata(client);
 282         int val = simple_strtoul(buf, NULL, 10);
 283
 284         mutex_lock(&data->update_lock);
 285         data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
 286         f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]);
 287         mutex_unlock(&data->update_lock);
 288         return count;
 289 }
 290
 291 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
 292                 *attr, char *buf)
 293 {
 294         int nr = to_sensor_dev_attr(attr)->index;
 295         struct f75375_data *data = f75375_update_device(dev);
 296         return sprintf(buf, "%d\n", data->pwm_enable[nr]);
 297 }
 298
 299 static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
 300 {
 301         struct f75375_data *data = i2c_get_clientdata(client);
 302         u8 fanmode;
 303
 304         if (val < 0 || val > 4)
 305                 return -EINVAL;
 306
 307         fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
 308         fanmode = ~(3 << FAN_CTRL_MODE(nr));
 309
 310         switch (val) {
 311         case 0: /* Full speed */
 312                 fanmode  |= (3 << FAN_CTRL_MODE(nr));
 313                 data->pwm[nr] = 255;
 314                 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
 315                                 data->pwm[nr]);
 316                 break;
 317         case 1: /* PWM */
 318                 fanmode  |= (3 << FAN_CTRL_MODE(nr));
 319                 break;
 320         case 2: /* AUTOMATIC*/
 321                 fanmode  |= (2 << FAN_CTRL_MODE(nr));
 322                 break;
 323         case 3: /* fan speed */
 324                 break;
 325         }
 326         f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
 327         data->pwm_enable[nr] = val;
 328         return 0;
 329 }
 330
 331 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
 332                 const char *buf, size_t count)
 333 {
 334         int nr = to_sensor_dev_attr(attr)->index;
 335         struct i2c_client *client = to_i2c_client(dev);
 336         struct f75375_data *data = i2c_get_clientdata(client);
 337         int val = simple_strtoul(buf, NULL, 10);
 338         int err = 0;
 339
 340         mutex_lock(&data->update_lock);
 341         err = set_pwm_enable_direct(client, nr, val);
 342         mutex_unlock(&data->update_lock);
 343         return err ? err : count;
 344 }
 345
 346 static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
 347                 const char *buf, size_t count)
 348 {
 349         int nr = to_sensor_dev_attr(attr)->index;
 350         struct i2c_client *client = to_i2c_client(dev);
 351         struct f75375_data *data = i2c_get_clientdata(client);
 352         int val = simple_strtoul(buf, NULL, 10);
 353         u8 conf = 0;
 354
 355         if (!(val == 0 || val == 1))
 356                 return -EINVAL;
 357
 358         mutex_lock(&data->update_lock);
 359         conf = f75375_read8(client, F75375_REG_CONFIG1);
 360         conf = ~(1 << FAN_CTRL_LINEAR(nr));
 361
 362         if (val == 0)
 363                 conf |= (1 << FAN_CTRL_LINEAR(nr)) ;
 364
 365         f75375_write8(client, F75375_REG_CONFIG1, conf);
 366         data->pwm_mode[nr] = val;
 367         mutex_unlock(&data->update_lock);
 368         return count;
 369 }
 370
 371 static ssize_t show_pwm(struct device *dev, struct device_attribute
 372                 *attr, char *buf)
 373 {
 374         int nr = to_sensor_dev_attr(attr)->index;
 375         struct f75375_data *data = f75375_update_device(dev);
 376         return sprintf(buf, "%d\n", data->pwm[nr]);
 377 }
 378
 379 static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
 380                 *attr, char *buf)
 381 {
 382         int nr = to_sensor_dev_attr(attr)->index;
 383         struct f75375_data *data = f75375_update_device(dev);
 384         return sprintf(buf, "%d\n", data->pwm_mode[nr]);
 385 }
 386
 387 #define VOLT_FROM_REG(val) ((val) * 8)
 388 #define VOLT_TO_REG(val) ((val) / 8)
 389
 390 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 391                 char *buf)
 392 {
 393         int nr = to_sensor_dev_attr(attr)->index;
 394         struct f75375_data *data = f75375_update_device(dev);
 395         return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
 396 }
 397
 398 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
 399                 char *buf)
 400 {
 401         int nr = to_sensor_dev_attr(attr)->index;
 402         struct f75375_data *data = f75375_update_device(dev);
 403         return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
 404 }
 405
 406 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
 407                 char *buf)
 408 {
 409         int nr = to_sensor_dev_attr(attr)->index;
 410         struct f75375_data *data = f75375_update_device(dev);
 411         return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
 412 }
 413
 414 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
 415                 const char *buf, size_t count)
 416 {
 417         int nr = to_sensor_dev_attr(attr)->index;
 418         struct i2c_client *client = to_i2c_client(dev);
 419         struct f75375_data *data = i2c_get_clientdata(client);
 420         int val = simple_strtoul(buf, NULL, 10);
 421         val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
 422         mutex_lock(&data->update_lock);
 423         data->in_max[nr] = val;
 424         f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
 425         mutex_unlock(&data->update_lock);
 426         return count;
 427 }
 428
 429 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
 430                 const char *buf, size_t count)
 431 {
 432         int nr = to_sensor_dev_attr(attr)->index;
 433         struct i2c_client *client = to_i2c_client(dev);
 434         struct f75375_data *data = i2c_get_clientdata(client);
 435         int val = simple_strtoul(buf, NULL, 10);
 436         val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
 437         mutex_lock(&data->update_lock);
 438         data->in_min[nr] = val;
 439         f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
 440         mutex_unlock(&data->update_lock);
 441         return count;
 442 }
 443 #define TEMP_FROM_REG(val) ((val) * 1000)
 444 #define TEMP_TO_REG(val) ((val) / 1000)
 445
 446 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 447                 char *buf)
 448 {
 449         int nr = to_sensor_dev_attr(attr)->index;
 450         struct f75375_data *data = f75375_update_device(dev);
 451         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
 452 }
 453
 454 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
 455                 char *buf)
 456 {
 457         int nr = to_sensor_dev_attr(attr)->index;
 458         struct f75375_data *data = f75375_update_device(dev);
 459         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
 460 }
 461
 462 static ssize_t show_temp_max_hyst(struct device *dev,
 463                 struct device_attribute *attr, char *buf)
 464 {
 465         int nr = to_sensor_dev_attr(attr)->index;
 466         struct f75375_data *data = f75375_update_device(dev);
 467         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
 468 }
 469
 470 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
 471                 const char *buf, size_t count)
 472 {
 473         int nr = to_sensor_dev_attr(attr)->index;
 474         struct i2c_client *client = to_i2c_client(dev);
 475         struct f75375_data *data = i2c_get_clientdata(client);
 476         int val = simple_strtol(buf, NULL, 10);
 477         val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
 478         mutex_lock(&data->update_lock);
 479         data->temp_high[nr] = val;
 480         f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
 481         mutex_unlock(&data->update_lock);
 482         return count;
 483 }
 484
 485 static ssize_t set_temp_max_hyst(struct device *dev,
 486         struct device_attribute *attr, const char *buf, size_t count)
 487 {
 488         int nr = to_sensor_dev_attr(attr)->index;
 489         struct i2c_client *client = to_i2c_client(dev);
 490         struct f75375_data *data = i2c_get_clientdata(client);
 491         int val = simple_strtol(buf, NULL, 10);
 492         val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
 493         mutex_lock(&data->update_lock);
 494         data->temp_max_hyst[nr] = val;
 495         f75375_write8(client, F75375_REG_TEMP_HYST(nr),
 496                 data->temp_max_hyst[nr]);
 497         mutex_unlock(&data->update_lock);
 498         return count;
 499 }
 500
 501 #define show_fan(thing) \
 502 static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
 503                         char *buf)\
 504 {\
 505         int nr = to_sensor_dev_attr(attr)->index;\
 506         struct f75375_data *data = f75375_update_device(dev); \
 507         return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
 508 }
 509
 510 show_fan(fan);
 511 show_fan(fan_min);
 512 show_fan(fan_full);
 513 show_fan(fan_exp);
 514
 515 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 516 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
 517         show_in_max, set_in_max, 0);
 518 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
 519         show_in_min, set_in_min, 0);
 520 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 521 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
 522         show_in_max, set_in_max, 1);
 523 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
 524         show_in_min, set_in_min, 1);
 525 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 526 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
 527         show_in_max, set_in_max, 2);
 528 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
 529         show_in_min, set_in_min, 2);
 530 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 531 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
 532         show_in_max, set_in_max, 3);
 533 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
 534         show_in_min, set_in_min, 3);
 535 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
 536 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
 537         show_temp_max_hyst, set_temp_max_hyst, 0);
 538 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
 539         show_temp_max, set_temp_max, 0);
 540 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
 541 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
 542         show_temp_max_hyst, set_temp_max_hyst, 1);
 543 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
 544         show_temp_max, set_temp_max, 1);
 545 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
 546 static SENSOR_DEVICE_ATTR(fan1_full, S_IRUGO, show_fan_full, NULL, 0);
 547 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
 548         show_fan_min, set_fan_min, 0);
 549 static SENSOR_DEVICE_ATTR(fan1_exp, S_IRUGO|S_IWUSR,
 550         show_fan_exp, set_fan_exp, 0);
 551 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
 552 static SENSOR_DEVICE_ATTR(fan2_full, S_IRUGO, show_fan_full, NULL, 1);
 553 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
 554         show_fan_min, set_fan_min, 1);
 555 static SENSOR_DEVICE_ATTR(fan2_exp, S_IRUGO|S_IWUSR,
 556         show_fan_exp, set_fan_exp, 1);
 557 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
 558         show_pwm, set_pwm, 0);
 559 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
 560         show_pwm_enable, set_pwm_enable, 0);
 561 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
 562         show_pwm_mode, set_pwm_mode, 0);
 563 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
 564         show_pwm, set_pwm, 1);
 565 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
 566         show_pwm_enable, set_pwm_enable, 1);
 567 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
 568         show_pwm_mode, set_pwm_mode, 1);
 569
 570 static struct attribute *f75375_attributes[] = {
 571         &sensor_dev_attr_temp1_input.dev_attr.attr,
 572         &sensor_dev_attr_temp1_max.dev_attr.attr,
 573         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
 574         &sensor_dev_attr_temp2_input.dev_attr.attr,
 575         &sensor_dev_attr_temp2_max.dev_attr.attr,
 576         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
 577         &sensor_dev_attr_fan1_input.dev_attr.attr,
 578         &sensor_dev_attr_fan1_full.dev_attr.attr,
 579         &sensor_dev_attr_fan1_min.dev_attr.attr,
 580         &sensor_dev_attr_fan1_exp.dev_attr.attr,
 581         &sensor_dev_attr_fan2_input.dev_attr.attr,
 582         &sensor_dev_attr_fan2_full.dev_attr.attr,
 583         &sensor_dev_attr_fan2_min.dev_attr.attr,
 584         &sensor_dev_attr_fan2_exp.dev_attr.attr,
 585         &sensor_dev_attr_pwm1.dev_attr.attr,
 586         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
 587         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
 588         &sensor_dev_attr_pwm2.dev_attr.attr,
 589         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
 590         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
 591         &sensor_dev_attr_in0_input.dev_attr.attr,
 592         &sensor_dev_attr_in0_max.dev_attr.attr,
 593         &sensor_dev_attr_in0_min.dev_attr.attr,
 594         &sensor_dev_attr_in1_input.dev_attr.attr,
 595         &sensor_dev_attr_in1_max.dev_attr.attr,
 596         &sensor_dev_attr_in1_min.dev_attr.attr,
 597         &sensor_dev_attr_in2_input.dev_attr.attr,
 598         &sensor_dev_attr_in2_max.dev_attr.attr,
 599         &sensor_dev_attr_in2_min.dev_attr.attr,
 600         &sensor_dev_attr_in3_input.dev_attr.attr,
 601         &sensor_dev_attr_in3_max.dev_attr.attr,
 602         &sensor_dev_attr_in3_min.dev_attr.attr,
 603         NULL
 604 };
 605
 606 static const struct attribute_group f75375_group = {
 607         .attrs = f75375_attributes,
 608 };
 609
 610 static int f75375_detach_client(struct i2c_client *client)
 611 {
 612         int err;
 613
 614         f75375_remove(client);
 615         err = i2c_detach_client(client);
 616         if (err) {
 617                 dev_err(&client->dev,
 618                         "Client deregistration failed, "
 619                         "client not detached.\n");
 620                 return err;
 621         }
 622         kfree(client);
 623         return 0;
 624 }
 625
 626 static void f75375_init(struct i2c_client *client, struct f75375_data *data,
 627                 struct f75375s_platform_data *f75375s_pdata)
 628 {
 629         int nr;
 630         set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
 631         set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
 632         for (nr = 0; nr < 2; nr++) {
 633                 data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255);
 634                 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
 635                         data->pwm[nr]);
 636         }
 637
 638 }
 639
 640 static int f75375_probe(struct i2c_client *client,
 641                 const struct i2c_device_id *id)
 642 {
 643         struct f75375_data *data = i2c_get_clientdata(client);
 644         struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data;
 645         int err;
 646
 647         if (!i2c_check_functionality(client->adapter,
 648                                 I2C_FUNC_SMBUS_BYTE_DATA))
 649                 return -EIO;
 650         if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL)))
 651                 return -ENOMEM;
 652
 653         i2c_set_clientdata(client, data);
 654         data->client = client;
 655         mutex_init(&data->update_lock);
 656         data->kind = id->driver_data;
 657
 658         if ((err = sysfs_create_group(&client->dev.kobj, &f75375_group)))
 659                 goto exit_free;
 660
 661         if (data->kind == f75375) {
 662                 err = sysfs_chmod_file(&client->dev.kobj,
 663                         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
 664                         S_IRUGO | S_IWUSR);
 665                 if (err)
 666                         goto exit_remove;
 667                 err = sysfs_chmod_file(&client->dev.kobj,
 668                         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
 669                         S_IRUGO | S_IWUSR);
 670                 if (err)
 671                         goto exit_remove;
 672         }
 673
 674         data->hwmon_dev = hwmon_device_register(&client->dev);
 675         if (IS_ERR(data->hwmon_dev)) {
 676                 err = PTR_ERR(data->hwmon_dev);
 677                 goto exit_remove;
 678         }
 679
 680         if (f75375s_pdata != NULL)
 681                 f75375_init(client, data, f75375s_pdata);
 682
 683         return 0;
 684
 685 exit_remove:
 686         sysfs_remove_group(&client->dev.kobj, &f75375_group);
 687 exit_free:
 688         kfree(data);
 689         i2c_set_clientdata(client, NULL);
 690         return err;
 691 }
 692
 693 static int f75375_remove(struct i2c_client *client)
 694 {
 695         struct f75375_data *data = i2c_get_clientdata(client);
 696         hwmon_device_unregister(data->hwmon_dev);
 697         sysfs_remove_group(&client->dev.kobj, &f75375_group);
 698         kfree(data);
 699         i2c_set_clientdata(client, NULL);
 700         return 0;
 701 }
 702
 703 static int f75375_attach_adapter(struct i2c_adapter *adapter)
 704 {
 705         if (!(adapter->class & I2C_CLASS_HWMON))
 706                 return 0;
 707         return i2c_probe(adapter, &addr_data, f75375_detect);
 708 }
 709
 710 /* This function is called by i2c_probe */
 711 static int f75375_detect(struct i2c_adapter *adapter, int address, int kind)
 712 {
 713         struct i2c_client *client;
 714         u8 version = 0;
 715         int err = 0;
 716         const char *name = "";
 717         struct i2c_device_id id;
 718
 719         if (!(client = kzalloc(sizeof(*client), GFP_KERNEL))) {
 720                 err = -ENOMEM;
 721                 goto exit;
 722         }
 723         client->addr = address;
 724         client->adapter = adapter;
 725         client->driver = &f75375_legacy_driver;
 726
 727         if (kind < 0) {
 728                 u16 vendid = f75375_read16(client, F75375_REG_VENDOR);
 729                 u16 chipid = f75375_read16(client, F75375_CHIP_ID);
 730                 version = f75375_read8(client, F75375_REG_VERSION);
 731                 if (chipid == 0x0306 && vendid == 0x1934) {
 732                         kind = f75375;
 733                 } else if (chipid == 0x0204 && vendid == 0x1934) {
 734                         kind = f75373;
 735                 } else {
 736                         dev_err(&adapter->dev,
 737                                 "failed,%02X,%02X,%02X\n",
 738                                 chipid, version, vendid);
 739                         goto exit_free;
 740                 }
 741         }
 742
 743         if (kind == f75375) {
 744                 name = "f75375";
 745         } else if (kind == f75373) {
 746                 name = "f75373";
 747         }
 748         dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
 749         strlcpy(client->name, name, I2C_NAME_SIZE);
 750
 751         if ((err = i2c_attach_client(client)))
 752                 goto exit_free;
 753
 754         strlcpy(id.name, name, I2C_NAME_SIZE);
 755         id.driver_data = kind;
 756         if ((err = f75375_probe(client, &id)) < 0)
 757                 goto exit_detach;
 758
 759         return 0;
 760
 761 exit_detach:
 762         i2c_detach_client(client);
 763 exit_free:
 764         kfree(client);
 765 exit:
 766         return err;
 767 }
 768
 769 static int __init sensors_f75375_init(void)
 770 {
 771         int status;
 772         status = i2c_add_driver(&f75375_driver);
 773         if (status)
 774                 return status;
 775
 776         status = i2c_add_driver(&f75375_legacy_driver);
 777         if (status)
 778                 i2c_del_driver(&f75375_driver);
 779
 780         return status;
 781 }
 782
 783 static void __exit sensors_f75375_exit(void)
 784 {
 785         i2c_del_driver(&f75375_legacy_driver);
 786         i2c_del_driver(&f75375_driver);
 787 }
 788
 789 MODULE_AUTHOR("Riku Voipio <riku.voipio@movial.fi>");
 790 MODULE_LICENSE("GPL");
 791 MODULE_DESCRIPTION("F75373/F75375 hardware monitoring driver");
 792
 793 module_init(sensors_f75375_init);
 794 module_exit(sensors_f75375_exit);