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
  39 /* Addresses to scan */
  40 static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
  41
  42 enum chips { 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 device *hwmon_dev;
  90
  91         const char *name;
  92         int kind;
  93         struct mutex update_lock; /* protect register access */
  94         char valid;
  95         unsigned long last_updated;     /* In jiffies */
  96         unsigned long last_limits;      /* In jiffies */
  97
  98         /* Register values */
  99         u8 in[4];
 100         u8 in_max[4];
 101         u8 in_min[4];
 102         u16 fan[2];
 103         u16 fan_min[2];
 104         u16 fan_full[2];
 105         u16 fan_exp[2];
 106         u8 fan_timer;
 107         u8 pwm[2];
 108         u8 pwm_mode[2];
 109         u8 pwm_enable[2];
 110         s8 temp[2];
 111         s8 temp_high[2];
 112         s8 temp_max_hyst[2];
 113 };
 114
 115 static int f75375_detect(struct i2c_client *client,
 116                          struct i2c_board_info *info);
 117 static int f75375_probe(struct i2c_client *client,
 118                         const struct i2c_device_id *id);
 119 static int f75375_remove(struct i2c_client *client);
 120
 121 static const struct i2c_device_id f75375_id[] = {
 122         { "f75373", f75373 },
 123         { "f75375", f75375 },
 124         { }
 125 };
 126 MODULE_DEVICE_TABLE(i2c, f75375_id);
 127
 128 static struct i2c_driver f75375_driver = {
 129         .class = I2C_CLASS_HWMON,
 130         .driver = {
 131                 .name = "f75375",
 132         },
 133         .probe = f75375_probe,
 134         .remove = f75375_remove,
 135         .id_table = f75375_id,
 136         .detect = f75375_detect,
 137         .address_list = normal_i2c,
 138 };
 139
 140 static inline int f75375_read8(struct i2c_client *client, u8 reg)
 141 {
 142         return i2c_smbus_read_byte_data(client, reg);
 143 }
 144
 145 /* in most cases, should be called while holding update_lock */
 146 static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
 147 {
 148         return ((i2c_smbus_read_byte_data(client, reg) << 8)
 149                 | i2c_smbus_read_byte_data(client, reg + 1));
 150 }
 151
 152 static inline void f75375_write8(struct i2c_client *client, u8 reg,
 153                 u8 value)
 154 {
 155         i2c_smbus_write_byte_data(client, reg, value);
 156 }
 157
 158 static inline void f75375_write16(struct i2c_client *client, u8 reg,
 159                 u16 value)
 160 {
 161         int err = i2c_smbus_write_byte_data(client, reg, (value << 8));
 162         if (err)
 163                 return;
 164         i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
 165 }
 166
 167 static struct f75375_data *f75375_update_device(struct device *dev)
 168 {
 169         struct i2c_client *client = to_i2c_client(dev);
 170         struct f75375_data *data = i2c_get_clientdata(client);
 171         int nr;
 172
 173         mutex_lock(&data->update_lock);
 174
 175         /* Limit registers cache is refreshed after 60 seconds */
 176         if (time_after(jiffies, data->last_limits + 60 * HZ)
 177                 || !data->valid) {
 178                 for (nr = 0; nr < 2; nr++) {
 179                         data->temp_high[nr] =
 180                                 f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
 181                         data->temp_max_hyst[nr] =
 182                                 f75375_read8(client, F75375_REG_TEMP_HYST(nr));
 183                         data->fan_full[nr] =
 184                                 f75375_read16(client, F75375_REG_FAN_FULL(nr));
 185                         data->fan_min[nr] =
 186                                 f75375_read16(client, F75375_REG_FAN_MIN(nr));
 187                         data->fan_exp[nr] =
 188                                 f75375_read16(client, F75375_REG_FAN_EXP(nr));
 189                         data->pwm[nr] = f75375_read8(client,
 190                                 F75375_REG_FAN_PWM_DUTY(nr));
 191
 192                 }
 193                 for (nr = 0; nr < 4; nr++) {
 194                         data->in_max[nr] =
 195                                 f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
 196                         data->in_min[nr] =
 197                                 f75375_read8(client, F75375_REG_VOLT_LOW(nr));
 198                 }
 199                 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
 200                 data->last_limits = jiffies;
 201         }
 202
 203         /* Measurement registers cache is refreshed after 2 second */
 204         if (time_after(jiffies, data->last_updated + 2 * HZ)
 205                 || !data->valid) {
 206                 for (nr = 0; nr < 2; nr++) {
 207                         data->temp[nr] =
 208                                 f75375_read8(client, F75375_REG_TEMP(nr));
 209                         data->fan[nr] =
 210                                 f75375_read16(client, F75375_REG_FAN(nr));
 211                 }
 212                 for (nr = 0; nr < 4; nr++)
 213                         data->in[nr] =
 214                                 f75375_read8(client, F75375_REG_VOLT(nr));
 215
 216                 data->last_updated = jiffies;
 217                 data->valid = 1;
 218         }
 219
 220         mutex_unlock(&data->update_lock);
 221         return data;
 222 }
 223
 224 static inline u16 rpm_from_reg(u16 reg)
 225 {
 226         if (reg == 0 || reg == 0xffff)
 227                 return 0;
 228         return (1500000 / reg);
 229 }
 230
 231 static inline u16 rpm_to_reg(int rpm)
 232 {
 233         if (rpm < 367 || rpm > 0xffff)
 234                 return 0xffff;
 235         return (1500000 / rpm);
 236 }
 237
 238 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 239                 const char *buf, size_t count)
 240 {
 241         int nr = to_sensor_dev_attr(attr)->index;
 242         struct i2c_client *client = to_i2c_client(dev);
 243         struct f75375_data *data = i2c_get_clientdata(client);
 244         int val = simple_strtoul(buf, NULL, 10);
 245
 246         mutex_lock(&data->update_lock);
 247         data->fan_min[nr] = rpm_to_reg(val);
 248         f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
 249         mutex_unlock(&data->update_lock);
 250         return count;
 251 }
 252
 253 static ssize_t set_fan_exp(struct device *dev, struct device_attribute *attr,
 254                 const char *buf, size_t count)
 255 {
 256         int nr = to_sensor_dev_attr(attr)->index;
 257         struct i2c_client *client = to_i2c_client(dev);
 258         struct f75375_data *data = i2c_get_clientdata(client);
 259         int val = simple_strtoul(buf, NULL, 10);
 260
 261         mutex_lock(&data->update_lock);
 262         data->fan_exp[nr] = rpm_to_reg(val);
 263         f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_exp[nr]);
 264         mutex_unlock(&data->update_lock);
 265         return count;
 266 }
 267
 268 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 269                 const char *buf, size_t count)
 270 {
 271         int nr = to_sensor_dev_attr(attr)->index;
 272         struct i2c_client *client = to_i2c_client(dev);
 273         struct f75375_data *data = i2c_get_clientdata(client);
 274         int val = simple_strtoul(buf, NULL, 10);
 275
 276         mutex_lock(&data->update_lock);
 277         data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
 278         f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]);
 279         mutex_unlock(&data->update_lock);
 280         return count;
 281 }
 282
 283 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
 284                 *attr, char *buf)
 285 {
 286         int nr = to_sensor_dev_attr(attr)->index;
 287         struct f75375_data *data = f75375_update_device(dev);
 288         return sprintf(buf, "%d\n", data->pwm_enable[nr]);
 289 }
 290
 291 static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
 292 {
 293         struct f75375_data *data = i2c_get_clientdata(client);
 294         u8 fanmode;
 295
 296         if (val < 0 || val > 4)
 297                 return -EINVAL;
 298
 299         fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
 300         fanmode = ~(3 << FAN_CTRL_MODE(nr));
 301
 302         switch (val) {
 303         case 0: /* Full speed */
 304                 fanmode  |= (3 << FAN_CTRL_MODE(nr));
 305                 data->pwm[nr] = 255;
 306                 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
 307                                 data->pwm[nr]);
 308                 break;
 309         case 1: /* PWM */
 310                 fanmode  |= (3 << FAN_CTRL_MODE(nr));
 311                 break;
 312         case 2: /* AUTOMATIC*/
 313                 fanmode  |= (2 << FAN_CTRL_MODE(nr));
 314                 break;
 315         case 3: /* fan speed */
 316                 break;
 317         }
 318         f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
 319         data->pwm_enable[nr] = val;
 320         return 0;
 321 }
 322
 323 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
 324                 const char *buf, size_t count)
 325 {
 326         int nr = to_sensor_dev_attr(attr)->index;
 327         struct i2c_client *client = to_i2c_client(dev);
 328         struct f75375_data *data = i2c_get_clientdata(client);
 329         int val = simple_strtoul(buf, NULL, 10);
 330         int err = 0;
 331
 332         mutex_lock(&data->update_lock);
 333         err = set_pwm_enable_direct(client, nr, val);
 334         mutex_unlock(&data->update_lock);
 335         return err ? err : count;
 336 }
 337
 338 static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
 339                 const char *buf, size_t count)
 340 {
 341         int nr = to_sensor_dev_attr(attr)->index;
 342         struct i2c_client *client = to_i2c_client(dev);
 343         struct f75375_data *data = i2c_get_clientdata(client);
 344         int val = simple_strtoul(buf, NULL, 10);
 345         u8 conf = 0;
 346
 347         if (!(val == 0 || val == 1))
 348                 return -EINVAL;
 349
 350         mutex_lock(&data->update_lock);
 351         conf = f75375_read8(client, F75375_REG_CONFIG1);
 352         conf = ~(1 << FAN_CTRL_LINEAR(nr));
 353
 354         if (val == 0)
 355                 conf |= (1 << FAN_CTRL_LINEAR(nr)) ;
 356
 357         f75375_write8(client, F75375_REG_CONFIG1, conf);
 358         data->pwm_mode[nr] = val;
 359         mutex_unlock(&data->update_lock);
 360         return count;
 361 }
 362
 363 static ssize_t show_pwm(struct device *dev, struct device_attribute
 364                 *attr, char *buf)
 365 {
 366         int nr = to_sensor_dev_attr(attr)->index;
 367         struct f75375_data *data = f75375_update_device(dev);
 368         return sprintf(buf, "%d\n", data->pwm[nr]);
 369 }
 370
 371 static ssize_t show_pwm_mode(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_mode[nr]);
 377 }
 378
 379 #define VOLT_FROM_REG(val) ((val) * 8)
 380 #define VOLT_TO_REG(val) ((val) / 8)
 381
 382 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 383                 char *buf)
 384 {
 385         int nr = to_sensor_dev_attr(attr)->index;
 386         struct f75375_data *data = f75375_update_device(dev);
 387         return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
 388 }
 389
 390 static ssize_t show_in_max(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_max[nr]));
 396 }
 397
 398 static ssize_t show_in_min(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_min[nr]));
 404 }
 405
 406 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
 407                 const char *buf, size_t count)
 408 {
 409         int nr = to_sensor_dev_attr(attr)->index;
 410         struct i2c_client *client = to_i2c_client(dev);
 411         struct f75375_data *data = i2c_get_clientdata(client);
 412         int val = simple_strtoul(buf, NULL, 10);
 413         val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
 414         mutex_lock(&data->update_lock);
 415         data->in_max[nr] = val;
 416         f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
 417         mutex_unlock(&data->update_lock);
 418         return count;
 419 }
 420
 421 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
 422                 const char *buf, size_t count)
 423 {
 424         int nr = to_sensor_dev_attr(attr)->index;
 425         struct i2c_client *client = to_i2c_client(dev);
 426         struct f75375_data *data = i2c_get_clientdata(client);
 427         int val = simple_strtoul(buf, NULL, 10);
 428         val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
 429         mutex_lock(&data->update_lock);
 430         data->in_min[nr] = val;
 431         f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
 432         mutex_unlock(&data->update_lock);
 433         return count;
 434 }
 435 #define TEMP_FROM_REG(val) ((val) * 1000)
 436 #define TEMP_TO_REG(val) ((val) / 1000)
 437
 438 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 439                 char *buf)
 440 {
 441         int nr = to_sensor_dev_attr(attr)->index;
 442         struct f75375_data *data = f75375_update_device(dev);
 443         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
 444 }
 445
 446 static ssize_t show_temp_max(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_high[nr]));
 452 }
 453
 454 static ssize_t show_temp_max_hyst(struct device *dev,
 455                 struct device_attribute *attr, 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_max_hyst[nr]));
 460 }
 461
 462 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
 463                 const char *buf, size_t count)
 464 {
 465         int nr = to_sensor_dev_attr(attr)->index;
 466         struct i2c_client *client = to_i2c_client(dev);
 467         struct f75375_data *data = i2c_get_clientdata(client);
 468         int val = simple_strtol(buf, NULL, 10);
 469         val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
 470         mutex_lock(&data->update_lock);
 471         data->temp_high[nr] = val;
 472         f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
 473         mutex_unlock(&data->update_lock);
 474         return count;
 475 }
 476
 477 static ssize_t set_temp_max_hyst(struct device *dev,
 478         struct device_attribute *attr, const char *buf, size_t count)
 479 {
 480         int nr = to_sensor_dev_attr(attr)->index;
 481         struct i2c_client *client = to_i2c_client(dev);
 482         struct f75375_data *data = i2c_get_clientdata(client);
 483         int val = simple_strtol(buf, NULL, 10);
 484         val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
 485         mutex_lock(&data->update_lock);
 486         data->temp_max_hyst[nr] = val;
 487         f75375_write8(client, F75375_REG_TEMP_HYST(nr),
 488                 data->temp_max_hyst[nr]);
 489         mutex_unlock(&data->update_lock);
 490         return count;
 491 }
 492
 493 #define show_fan(thing) \
 494 static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
 495                         char *buf)\
 496 {\
 497         int nr = to_sensor_dev_attr(attr)->index;\
 498         struct f75375_data *data = f75375_update_device(dev); \
 499         return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
 500 }
 501
 502 show_fan(fan);
 503 show_fan(fan_min);
 504 show_fan(fan_full);
 505 show_fan(fan_exp);
 506
 507 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 508 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
 509         show_in_max, set_in_max, 0);
 510 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
 511         show_in_min, set_in_min, 0);
 512 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 513 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
 514         show_in_max, set_in_max, 1);
 515 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
 516         show_in_min, set_in_min, 1);
 517 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 518 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
 519         show_in_max, set_in_max, 2);
 520 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
 521         show_in_min, set_in_min, 2);
 522 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 523 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
 524         show_in_max, set_in_max, 3);
 525 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
 526         show_in_min, set_in_min, 3);
 527 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
 528 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
 529         show_temp_max_hyst, set_temp_max_hyst, 0);
 530 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
 531         show_temp_max, set_temp_max, 0);
 532 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
 533 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
 534         show_temp_max_hyst, set_temp_max_hyst, 1);
 535 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
 536         show_temp_max, set_temp_max, 1);
 537 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
 538 static SENSOR_DEVICE_ATTR(fan1_full, S_IRUGO, show_fan_full, NULL, 0);
 539 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
 540         show_fan_min, set_fan_min, 0);
 541 static SENSOR_DEVICE_ATTR(fan1_exp, S_IRUGO|S_IWUSR,
 542         show_fan_exp, set_fan_exp, 0);
 543 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
 544 static SENSOR_DEVICE_ATTR(fan2_full, S_IRUGO, show_fan_full, NULL, 1);
 545 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
 546         show_fan_min, set_fan_min, 1);
 547 static SENSOR_DEVICE_ATTR(fan2_exp, S_IRUGO|S_IWUSR,
 548         show_fan_exp, set_fan_exp, 1);
 549 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
 550         show_pwm, set_pwm, 0);
 551 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
 552         show_pwm_enable, set_pwm_enable, 0);
 553 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
 554         show_pwm_mode, set_pwm_mode, 0);
 555 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
 556         show_pwm, set_pwm, 1);
 557 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
 558         show_pwm_enable, set_pwm_enable, 1);
 559 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
 560         show_pwm_mode, set_pwm_mode, 1);
 561
 562 static struct attribute *f75375_attributes[] = {
 563         &sensor_dev_attr_temp1_input.dev_attr.attr,
 564         &sensor_dev_attr_temp1_max.dev_attr.attr,
 565         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
 566         &sensor_dev_attr_temp2_input.dev_attr.attr,
 567         &sensor_dev_attr_temp2_max.dev_attr.attr,
 568         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
 569         &sensor_dev_attr_fan1_input.dev_attr.attr,
 570         &sensor_dev_attr_fan1_full.dev_attr.attr,
 571         &sensor_dev_attr_fan1_min.dev_attr.attr,
 572         &sensor_dev_attr_fan1_exp.dev_attr.attr,
 573         &sensor_dev_attr_fan2_input.dev_attr.attr,
 574         &sensor_dev_attr_fan2_full.dev_attr.attr,
 575         &sensor_dev_attr_fan2_min.dev_attr.attr,
 576         &sensor_dev_attr_fan2_exp.dev_attr.attr,
 577         &sensor_dev_attr_pwm1.dev_attr.attr,
 578         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
 579         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
 580         &sensor_dev_attr_pwm2.dev_attr.attr,
 581         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
 582         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
 583         &sensor_dev_attr_in0_input.dev_attr.attr,
 584         &sensor_dev_attr_in0_max.dev_attr.attr,
 585         &sensor_dev_attr_in0_min.dev_attr.attr,
 586         &sensor_dev_attr_in1_input.dev_attr.attr,
 587         &sensor_dev_attr_in1_max.dev_attr.attr,
 588         &sensor_dev_attr_in1_min.dev_attr.attr,
 589         &sensor_dev_attr_in2_input.dev_attr.attr,
 590         &sensor_dev_attr_in2_max.dev_attr.attr,
 591         &sensor_dev_attr_in2_min.dev_attr.attr,
 592         &sensor_dev_attr_in3_input.dev_attr.attr,
 593         &sensor_dev_attr_in3_max.dev_attr.attr,
 594         &sensor_dev_attr_in3_min.dev_attr.attr,
 595         NULL
 596 };
 597
 598 static const struct attribute_group f75375_group = {
 599         .attrs = f75375_attributes,
 600 };
 601
 602 static void f75375_init(struct i2c_client *client, struct f75375_data *data,
 603                 struct f75375s_platform_data *f75375s_pdata)
 604 {
 605         int nr;
 606         set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
 607         set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
 608         for (nr = 0; nr < 2; nr++) {
 609                 data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255);
 610                 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
 611                         data->pwm[nr]);
 612         }
 613
 614 }
 615
 616 static int f75375_probe(struct i2c_client *client,
 617                 const struct i2c_device_id *id)
 618 {
 619         struct f75375_data *data;
 620         struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data;
 621         int err;
 622
 623         if (!i2c_check_functionality(client->adapter,
 624                                 I2C_FUNC_SMBUS_BYTE_DATA))
 625                 return -EIO;
 626         if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL)))
 627                 return -ENOMEM;
 628
 629         i2c_set_clientdata(client, data);
 630         mutex_init(&data->update_lock);
 631         data->kind = id->driver_data;
 632
 633         if ((err = sysfs_create_group(&client->dev.kobj, &f75375_group)))
 634                 goto exit_free;
 635
 636         if (data->kind == f75375) {
 637                 err = sysfs_chmod_file(&client->dev.kobj,
 638                         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
 639                         S_IRUGO | S_IWUSR);
 640                 if (err)
 641                         goto exit_remove;
 642                 err = sysfs_chmod_file(&client->dev.kobj,
 643                         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
 644                         S_IRUGO | S_IWUSR);
 645                 if (err)
 646                         goto exit_remove;
 647         }
 648
 649         data->hwmon_dev = hwmon_device_register(&client->dev);
 650         if (IS_ERR(data->hwmon_dev)) {
 651                 err = PTR_ERR(data->hwmon_dev);
 652                 goto exit_remove;
 653         }
 654
 655         if (f75375s_pdata != NULL)
 656                 f75375_init(client, data, f75375s_pdata);
 657
 658         return 0;
 659
 660 exit_remove:
 661         sysfs_remove_group(&client->dev.kobj, &f75375_group);
 662 exit_free:
 663         kfree(data);
 664         i2c_set_clientdata(client, NULL);
 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         i2c_set_clientdata(client, NULL);
 675         return 0;
 676 }
 677
 678 /* Return 0 if detection is successful, -ENODEV otherwise */
 679 static int f75375_detect(struct i2c_client *client,
 680                          struct i2c_board_info *info)
 681 {
 682         struct i2c_adapter *adapter = client->adapter;
 683         u16 vendid, chipid;
 684         u8 version;
 685         const char *name;
 686
 687         vendid = f75375_read16(client, F75375_REG_VENDOR);
 688         chipid = f75375_read16(client, F75375_CHIP_ID);
 689         if (chipid == 0x0306 && vendid == 0x1934)
 690                 name = "f75375";
 691         else if (chipid == 0x0204 && vendid == 0x1934)
 692                 name = "f75373";
 693         else
 694                 return -ENODEV;
 695
 696         version = f75375_read8(client, F75375_REG_VERSION);
 697         dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
 698         strlcpy(info->type, name, I2C_NAME_SIZE);
 699
 700         return 0;
 701 }
 702
 703 static int __init sensors_f75375_init(void)
 704 {
 705         return i2c_add_driver(&f75375_driver);
 706 }
 707
 708 static void __exit sensors_f75375_exit(void)
 709 {
 710         i2c_del_driver(&f75375_driver);
 711 }
 712
 713 MODULE_AUTHOR("Riku Voipio");
 714 MODULE_LICENSE("GPL");
 715 MODULE_DESCRIPTION("F75373/F75375 hardware monitoring driver");
 716
 717 module_init(sensors_f75375_init);
 718 module_exit(sensors_f75375_exit);