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
   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 #include <linux/slab.h>
  39
  40 /* Addresses to scan */
  41 static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
  42
  43 enum chips { 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 device *hwmon_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_detect(struct i2c_client *client,
 117                          struct i2c_board_info *info);
 118 static int f75375_probe(struct i2c_client *client,
 119                         const struct i2c_device_id *id);
 120 static int f75375_remove(struct i2c_client *client);
 121
 122 static const struct i2c_device_id f75375_id[] = {
 123         { "f75373", f75373 },
 124         { "f75375", f75375 },
 125         { }
 126 };
 127 MODULE_DEVICE_TABLE(i2c, f75375_id);
 128
 129 static struct i2c_driver f75375_driver = {
 130         .class = I2C_CLASS_HWMON,
 131         .driver = {
 132                 .name = "f75375",
 133         },
 134         .probe = f75375_probe,
 135         .remove = f75375_remove,
 136         .id_table = f75375_id,
 137         .detect = f75375_detect,
 138         .address_list = normal_i2c,
 139 };
 140
 141 static inline int f75375_read8(struct i2c_client *client, u8 reg)
 142 {
 143         return i2c_smbus_read_byte_data(client, reg);
 144 }
 145
 146 /* in most cases, should be called while holding update_lock */
 147 static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
 148 {
 149         return ((i2c_smbus_read_byte_data(client, reg) << 8)
 150                 | i2c_smbus_read_byte_data(client, reg + 1));
 151 }
 152
 153 static inline void f75375_write8(struct i2c_client *client, u8 reg,
 154                 u8 value)
 155 {
 156         i2c_smbus_write_byte_data(client, reg, value);
 157 }
 158
 159 static inline void f75375_write16(struct i2c_client *client, u8 reg,
 160                 u16 value)
 161 {
 162         int err = i2c_smbus_write_byte_data(client, reg, (value << 8));
 163         if (err)
 164                 return;
 165         i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
 166 }
 167
 168 static struct f75375_data *f75375_update_device(struct device *dev)
 169 {
 170         struct i2c_client *client = to_i2c_client(dev);
 171         struct f75375_data *data = i2c_get_clientdata(client);
 172         int nr;
 173
 174         mutex_lock(&data->update_lock);
 175
 176         /* Limit registers cache is refreshed after 60 seconds */
 177         if (time_after(jiffies, data->last_limits + 60 * HZ)
 178                 || !data->valid) {
 179                 for (nr = 0; nr < 2; nr++) {
 180                         data->temp_high[nr] =
 181                                 f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
 182                         data->temp_max_hyst[nr] =
 183                                 f75375_read8(client, F75375_REG_TEMP_HYST(nr));
 184                         data->fan_full[nr] =
 185                                 f75375_read16(client, F75375_REG_FAN_FULL(nr));
 186                         data->fan_min[nr] =
 187                                 f75375_read16(client, F75375_REG_FAN_MIN(nr));
 188                         data->fan_exp[nr] =
 189                                 f75375_read16(client, F75375_REG_FAN_EXP(nr));
 190                         data->pwm[nr] = f75375_read8(client,
 191                                 F75375_REG_FAN_PWM_DUTY(nr));
 192
 193                 }
 194                 for (nr = 0; nr < 4; nr++) {
 195                         data->in_max[nr] =
 196                                 f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
 197                         data->in_min[nr] =
 198                                 f75375_read8(client, F75375_REG_VOLT_LOW(nr));
 199                 }
 200                 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
 201                 data->last_limits = jiffies;
 202         }
 203
 204         /* Measurement registers cache is refreshed after 2 second */
 205         if (time_after(jiffies, data->last_updated + 2 * HZ)
 206                 || !data->valid) {
 207                 for (nr = 0; nr < 2; nr++) {
 208                         data->temp[nr] =
 209                                 f75375_read8(client, F75375_REG_TEMP(nr));
 210                         data->fan[nr] =
 211                                 f75375_read16(client, F75375_REG_FAN(nr));
 212                 }
 213                 for (nr = 0; nr < 4; nr++)
 214                         data->in[nr] =
 215                                 f75375_read8(client, F75375_REG_VOLT(nr));
 216
 217                 data->last_updated = jiffies;
 218                 data->valid = 1;
 219         }
 220
 221         mutex_unlock(&data->update_lock);
 222         return data;
 223 }
 224
 225 static inline u16 rpm_from_reg(u16 reg)
 226 {
 227         if (reg == 0 || reg == 0xffff)
 228                 return 0;
 229         return (1500000 / reg);
 230 }
 231
 232 static inline u16 rpm_to_reg(int rpm)
 233 {
 234         if (rpm < 367 || rpm > 0xffff)
 235                 return 0xffff;
 236         return (1500000 / rpm);
 237 }
 238
 239 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 240                 const char *buf, size_t count)
 241 {
 242         int nr = to_sensor_dev_attr(attr)->index;
 243         struct i2c_client *client = to_i2c_client(dev);
 244         struct f75375_data *data = i2c_get_clientdata(client);
 245         int val = simple_strtoul(buf, NULL, 10);
 246
 247         mutex_lock(&data->update_lock);
 248         data->fan_min[nr] = rpm_to_reg(val);
 249         f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
 250         mutex_unlock(&data->update_lock);
 251         return count;
 252 }
 253
 254 static ssize_t set_fan_exp(struct device *dev, struct device_attribute *attr,
 255                 const char *buf, size_t count)
 256 {
 257         int nr = to_sensor_dev_attr(attr)->index;
 258         struct i2c_client *client = to_i2c_client(dev);
 259         struct f75375_data *data = i2c_get_clientdata(client);
 260         int val = simple_strtoul(buf, NULL, 10);
 261
 262         mutex_lock(&data->update_lock);
 263         data->fan_exp[nr] = rpm_to_reg(val);
 264         f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_exp[nr]);
 265         mutex_unlock(&data->update_lock);
 266         return count;
 267 }
 268
 269 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 270                 const char *buf, size_t count)
 271 {
 272         int nr = to_sensor_dev_attr(attr)->index;
 273         struct i2c_client *client = to_i2c_client(dev);
 274         struct f75375_data *data = i2c_get_clientdata(client);
 275         int val = simple_strtoul(buf, NULL, 10);
 276
 277         mutex_lock(&data->update_lock);
 278         data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
 279         f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]);
 280         mutex_unlock(&data->update_lock);
 281         return count;
 282 }
 283
 284 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
 285                 *attr, char *buf)
 286 {
 287         int nr = to_sensor_dev_attr(attr)->index;
 288         struct f75375_data *data = f75375_update_device(dev);
 289         return sprintf(buf, "%d\n", data->pwm_enable[nr]);
 290 }
 291
 292 static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
 293 {
 294         struct f75375_data *data = i2c_get_clientdata(client);
 295         u8 fanmode;
 296
 297         if (val < 0 || val > 4)
 298                 return -EINVAL;
 299
 300         fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
 301         fanmode = ~(3 << FAN_CTRL_MODE(nr));
 302
 303         switch (val) {
 304         case 0: /* Full speed */
 305                 fanmode  |= (3 << FAN_CTRL_MODE(nr));
 306                 data->pwm[nr] = 255;
 307                 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
 308                                 data->pwm[nr]);
 309                 break;
 310         case 1: /* PWM */
 311                 fanmode  |= (3 << FAN_CTRL_MODE(nr));
 312                 break;
 313         case 2: /* AUTOMATIC*/
 314                 fanmode  |= (2 << FAN_CTRL_MODE(nr));
 315                 break;
 316         case 3: /* fan speed */
 317                 break;
 318         }
 319         f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
 320         data->pwm_enable[nr] = val;
 321         return 0;
 322 }
 323
 324 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
 325                 const char *buf, size_t count)
 326 {
 327         int nr = to_sensor_dev_attr(attr)->index;
 328         struct i2c_client *client = to_i2c_client(dev);
 329         struct f75375_data *data = i2c_get_clientdata(client);
 330         int val = simple_strtoul(buf, NULL, 10);
 331         int err = 0;
 332
 333         mutex_lock(&data->update_lock);
 334         err = set_pwm_enable_direct(client, nr, val);
 335         mutex_unlock(&data->update_lock);
 336         return err ? err : count;
 337 }
 338
 339 static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
 340                 const char *buf, size_t count)
 341 {
 342         int nr = to_sensor_dev_attr(attr)->index;
 343         struct i2c_client *client = to_i2c_client(dev);
 344         struct f75375_data *data = i2c_get_clientdata(client);
 345         int val = simple_strtoul(buf, NULL, 10);
 346         u8 conf = 0;
 347
 348         if (!(val == 0 || val == 1))
 349                 return -EINVAL;
 350
 351         mutex_lock(&data->update_lock);
 352         conf = f75375_read8(client, F75375_REG_CONFIG1);
 353         conf = ~(1 << FAN_CTRL_LINEAR(nr));
 354
 355         if (val == 0)
 356                 conf |= (1 << FAN_CTRL_LINEAR(nr)) ;
 357
 358         f75375_write8(client, F75375_REG_CONFIG1, conf);
 359         data->pwm_mode[nr] = val;
 360         mutex_unlock(&data->update_lock);
 361         return count;
 362 }
 363
 364 static ssize_t show_pwm(struct device *dev, struct device_attribute
 365                 *attr, char *buf)
 366 {
 367         int nr = to_sensor_dev_attr(attr)->index;
 368         struct f75375_data *data = f75375_update_device(dev);
 369         return sprintf(buf, "%d\n", data->pwm[nr]);
 370 }
 371
 372 static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
 373                 *attr, char *buf)
 374 {
 375         int nr = to_sensor_dev_attr(attr)->index;
 376         struct f75375_data *data = f75375_update_device(dev);
 377         return sprintf(buf, "%d\n", data->pwm_mode[nr]);
 378 }
 379
 380 #define VOLT_FROM_REG(val) ((val) * 8)
 381 #define VOLT_TO_REG(val) ((val) / 8)
 382
 383 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 384                 char *buf)
 385 {
 386         int nr = to_sensor_dev_attr(attr)->index;
 387         struct f75375_data *data = f75375_update_device(dev);
 388         return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
 389 }
 390
 391 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
 392                 char *buf)
 393 {
 394         int nr = to_sensor_dev_attr(attr)->index;
 395         struct f75375_data *data = f75375_update_device(dev);
 396         return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
 397 }
 398
 399 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
 400                 char *buf)
 401 {
 402         int nr = to_sensor_dev_attr(attr)->index;
 403         struct f75375_data *data = f75375_update_device(dev);
 404         return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
 405 }
 406
 407 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
 408                 const char *buf, size_t count)
 409 {
 410         int nr = to_sensor_dev_attr(attr)->index;
 411         struct i2c_client *client = to_i2c_client(dev);
 412         struct f75375_data *data = i2c_get_clientdata(client);
 413         int val = simple_strtoul(buf, NULL, 10);
 414         val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
 415         mutex_lock(&data->update_lock);
 416         data->in_max[nr] = val;
 417         f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
 418         mutex_unlock(&data->update_lock);
 419         return count;
 420 }
 421
 422 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
 423                 const char *buf, size_t count)
 424 {
 425         int nr = to_sensor_dev_attr(attr)->index;
 426         struct i2c_client *client = to_i2c_client(dev);
 427         struct f75375_data *data = i2c_get_clientdata(client);
 428         int val = simple_strtoul(buf, NULL, 10);
 429         val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
 430         mutex_lock(&data->update_lock);
 431         data->in_min[nr] = val;
 432         f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
 433         mutex_unlock(&data->update_lock);
 434         return count;
 435 }
 436 #define TEMP_FROM_REG(val) ((val) * 1000)
 437 #define TEMP_TO_REG(val) ((val) / 1000)
 438
 439 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 440                 char *buf)
 441 {
 442         int nr = to_sensor_dev_attr(attr)->index;
 443         struct f75375_data *data = f75375_update_device(dev);
 444         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
 445 }
 446
 447 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
 448                 char *buf)
 449 {
 450         int nr = to_sensor_dev_attr(attr)->index;
 451         struct f75375_data *data = f75375_update_device(dev);
 452         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
 453 }
 454
 455 static ssize_t show_temp_max_hyst(struct device *dev,
 456                 struct device_attribute *attr, char *buf)
 457 {
 458         int nr = to_sensor_dev_attr(attr)->index;
 459         struct f75375_data *data = f75375_update_device(dev);
 460         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
 461 }
 462
 463 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
 464                 const char *buf, size_t count)
 465 {
 466         int nr = to_sensor_dev_attr(attr)->index;
 467         struct i2c_client *client = to_i2c_client(dev);
 468         struct f75375_data *data = i2c_get_clientdata(client);
 469         int val = simple_strtol(buf, NULL, 10);
 470         val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
 471         mutex_lock(&data->update_lock);
 472         data->temp_high[nr] = val;
 473         f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
 474         mutex_unlock(&data->update_lock);
 475         return count;
 476 }
 477
 478 static ssize_t set_temp_max_hyst(struct device *dev,
 479         struct device_attribute *attr, const char *buf, size_t count)
 480 {
 481         int nr = to_sensor_dev_attr(attr)->index;
 482         struct i2c_client *client = to_i2c_client(dev);
 483         struct f75375_data *data = i2c_get_clientdata(client);
 484         int val = simple_strtol(buf, NULL, 10);
 485         val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
 486         mutex_lock(&data->update_lock);
 487         data->temp_max_hyst[nr] = val;
 488         f75375_write8(client, F75375_REG_TEMP_HYST(nr),
 489                 data->temp_max_hyst[nr]);
 490         mutex_unlock(&data->update_lock);
 491         return count;
 492 }
 493
 494 #define show_fan(thing) \
 495 static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
 496                         char *buf)\
 497 {\
 498         int nr = to_sensor_dev_attr(attr)->index;\
 499         struct f75375_data *data = f75375_update_device(dev); \
 500         return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
 501 }
 502
 503 show_fan(fan);
 504 show_fan(fan_min);
 505 show_fan(fan_full);
 506 show_fan(fan_exp);
 507
 508 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 509 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
 510         show_in_max, set_in_max, 0);
 511 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
 512         show_in_min, set_in_min, 0);
 513 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 514 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
 515         show_in_max, set_in_max, 1);
 516 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
 517         show_in_min, set_in_min, 1);
 518 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 519 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
 520         show_in_max, set_in_max, 2);
 521 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
 522         show_in_min, set_in_min, 2);
 523 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 524 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
 525         show_in_max, set_in_max, 3);
 526 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
 527         show_in_min, set_in_min, 3);
 528 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
 529 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
 530         show_temp_max_hyst, set_temp_max_hyst, 0);
 531 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
 532         show_temp_max, set_temp_max, 0);
 533 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
 534 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
 535         show_temp_max_hyst, set_temp_max_hyst, 1);
 536 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
 537         show_temp_max, set_temp_max, 1);
 538 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
 539 static SENSOR_DEVICE_ATTR(fan1_full, S_IRUGO, show_fan_full, NULL, 0);
 540 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
 541         show_fan_min, set_fan_min, 0);
 542 static SENSOR_DEVICE_ATTR(fan1_exp, S_IRUGO|S_IWUSR,
 543         show_fan_exp, set_fan_exp, 0);
 544 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
 545 static SENSOR_DEVICE_ATTR(fan2_full, S_IRUGO, show_fan_full, NULL, 1);
 546 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
 547         show_fan_min, set_fan_min, 1);
 548 static SENSOR_DEVICE_ATTR(fan2_exp, S_IRUGO|S_IWUSR,
 549         show_fan_exp, set_fan_exp, 1);
 550 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
 551         show_pwm, set_pwm, 0);
 552 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
 553         show_pwm_enable, set_pwm_enable, 0);
 554 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
 555         show_pwm_mode, set_pwm_mode, 0);
 556 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
 557         show_pwm, set_pwm, 1);
 558 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
 559         show_pwm_enable, set_pwm_enable, 1);
 560 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
 561         show_pwm_mode, set_pwm_mode, 1);
 562
 563 static struct attribute *f75375_attributes[] = {
 564         &sensor_dev_attr_temp1_input.dev_attr.attr,
 565         &sensor_dev_attr_temp1_max.dev_attr.attr,
 566         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
 567         &sensor_dev_attr_temp2_input.dev_attr.attr,
 568         &sensor_dev_attr_temp2_max.dev_attr.attr,
 569         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
 570         &sensor_dev_attr_fan1_input.dev_attr.attr,
 571         &sensor_dev_attr_fan1_full.dev_attr.attr,
 572         &sensor_dev_attr_fan1_min.dev_attr.attr,
 573         &sensor_dev_attr_fan1_exp.dev_attr.attr,
 574         &sensor_dev_attr_fan2_input.dev_attr.attr,
 575         &sensor_dev_attr_fan2_full.dev_attr.attr,
 576         &sensor_dev_attr_fan2_min.dev_attr.attr,
 577         &sensor_dev_attr_fan2_exp.dev_attr.attr,
 578         &sensor_dev_attr_pwm1.dev_attr.attr,
 579         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
 580         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
 581         &sensor_dev_attr_pwm2.dev_attr.attr,
 582         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
 583         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
 584         &sensor_dev_attr_in0_input.dev_attr.attr,
 585         &sensor_dev_attr_in0_max.dev_attr.attr,
 586         &sensor_dev_attr_in0_min.dev_attr.attr,
 587         &sensor_dev_attr_in1_input.dev_attr.attr,
 588         &sensor_dev_attr_in1_max.dev_attr.attr,
 589         &sensor_dev_attr_in1_min.dev_attr.attr,
 590         &sensor_dev_attr_in2_input.dev_attr.attr,
 591         &sensor_dev_attr_in2_max.dev_attr.attr,
 592         &sensor_dev_attr_in2_min.dev_attr.attr,
 593         &sensor_dev_attr_in3_input.dev_attr.attr,
 594         &sensor_dev_attr_in3_max.dev_attr.attr,
 595         &sensor_dev_attr_in3_min.dev_attr.attr,
 596         NULL
 597 };
 598
 599 static const struct attribute_group f75375_group = {
 600         .attrs = f75375_attributes,
 601 };
 602
 603 static void f75375_init(struct i2c_client *client, struct f75375_data *data,
 604                 struct f75375s_platform_data *f75375s_pdata)
 605 {
 606         int nr;
 607         set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
 608         set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
 609         for (nr = 0; nr < 2; nr++) {
 610                 data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255);
 611                 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
 612                         data->pwm[nr]);
 613         }
 614
 615 }
 616
 617 static int f75375_probe(struct i2c_client *client,
 618                 const struct i2c_device_id *id)
 619 {
 620         struct f75375_data *data;
 621         struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data;
 622         int err;
 623
 624         if (!i2c_check_functionality(client->adapter,
 625                                 I2C_FUNC_SMBUS_BYTE_DATA))
 626                 return -EIO;
 627         if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL)))
 628                 return -ENOMEM;
 629
 630         i2c_set_clientdata(client, data);
 631         mutex_init(&data->update_lock);
 632         data->kind = id->driver_data;
 633
 634         if ((err = sysfs_create_group(&client->dev.kobj, &f75375_group)))
 635                 goto exit_free;
 636
 637         if (data->kind == f75375) {
 638                 err = sysfs_chmod_file(&client->dev.kobj,
 639                         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
 640                         S_IRUGO | S_IWUSR);
 641                 if (err)
 642                         goto exit_remove;
 643                 err = sysfs_chmod_file(&client->dev.kobj,
 644                         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
 645                         S_IRUGO | S_IWUSR);
 646                 if (err)
 647                         goto exit_remove;
 648         }
 649
 650         data->hwmon_dev = hwmon_device_register(&client->dev);
 651         if (IS_ERR(data->hwmon_dev)) {
 652                 err = PTR_ERR(data->hwmon_dev);
 653                 goto exit_remove;
 654         }
 655
 656         if (f75375s_pdata != NULL)
 657                 f75375_init(client, data, f75375s_pdata);
 658
 659         return 0;
 660
 661 exit_remove:
 662         sysfs_remove_group(&client->dev.kobj, &f75375_group);
 663 exit_free:
 664         kfree(data);
 665         return err;
 666 }
 667
 668 static int f75375_remove(struct i2c_client *client)
 669 {
 670         struct f75375_data *data = i2c_get_clientdata(client);
 671         hwmon_device_unregister(data->hwmon_dev);
 672         sysfs_remove_group(&client->dev.kobj, &f75375_group);
 673         kfree(data);
 674         return 0;
 675 }
 676
 677 /* Return 0 if detection is successful, -ENODEV otherwise */
 678 static int f75375_detect(struct i2c_client *client,
 679                          struct i2c_board_info *info)
 680 {
 681         struct i2c_adapter *adapter = client->adapter;
 682         u16 vendid, chipid;
 683         u8 version;
 684         const char *name;
 685
 686         vendid = f75375_read16(client, F75375_REG_VENDOR);
 687         chipid = f75375_read16(client, F75375_CHIP_ID);
 688         if (chipid == 0x0306 && vendid == 0x1934)
 689                 name = "f75375";
 690         else if (chipid == 0x0204 && vendid == 0x1934)
 691                 name = "f75373";
 692         else
 693                 return -ENODEV;
 694
 695         version = f75375_read8(client, F75375_REG_VERSION);
 696         dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
 697         strlcpy(info->type, name, I2C_NAME_SIZE);
 698
 699         return 0;
 700 }
 701
 702 static int __init sensors_f75375_init(void)
 703 {
 704         return i2c_add_driver(&f75375_driver);
 705 }
 706
 707 static void __exit sensors_f75375_exit(void)
 708 {
 709         i2c_del_driver(&f75375_driver);
 710 }
 711
 712 MODULE_AUTHOR("Riku Voipio");
 713 MODULE_LICENSE("GPL");
 714 MODULE_DESCRIPTION("F75373/F75375 hardware monitoring driver");
 715
 716 module_init(sensors_f75375_init);
 717 module_exit(sensors_f75375_exit);