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