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 <<<<<<< HEAD:drivers/hwmon/f75375s.c
  41 static unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
  42 =======
  43 static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
  44 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/f75375s.c
  45
  46 /* Insmod parameters */
  47 I2C_CLIENT_INSMOD_2(f75373, f75375);
  48
  49 /* Fintek F75375 registers  */
  50 #define F75375_REG_CONFIG0              0x0
  51 #define F75375_REG_CONFIG1              0x1
  52 #define F75375_REG_CONFIG2              0x2
  53 #define F75375_REG_CONFIG3              0x3
  54 #define F75375_REG_ADDR                 0x4
  55 #define F75375_REG_INTR                 0x31
  56 #define F75375_CHIP_ID                  0x5A
  57 #define F75375_REG_VERSION              0x5C
  58 #define F75375_REG_VENDOR               0x5D
  59 #define F75375_REG_FAN_TIMER            0x60
  60
  61 #define F75375_REG_VOLT(nr)             (0x10 + (nr))
  62 #define F75375_REG_VOLT_HIGH(nr)        (0x20 + (nr) * 2)
  63 #define F75375_REG_VOLT_LOW(nr)         (0x21 + (nr) * 2)
  64
  65 #define F75375_REG_TEMP(nr)             (0x14 + (nr))
  66 #define F75375_REG_TEMP_HIGH(nr)        (0x28 + (nr) * 2)
  67 #define F75375_REG_TEMP_HYST(nr)        (0x29 + (nr) * 2)
  68
  69 #define F75375_REG_FAN(nr)              (0x16 + (nr) * 2)
  70 #define F75375_REG_FAN_MIN(nr)          (0x2C + (nr) * 2)
  71 #define F75375_REG_FAN_FULL(nr)         (0x70 + (nr) * 0x10)
  72 #define F75375_REG_FAN_PWM_DUTY(nr)     (0x76 + (nr) * 0x10)
  73 #define F75375_REG_FAN_PWM_CLOCK(nr)    (0x7D + (nr) * 0x10)
  74
  75 #define F75375_REG_FAN_EXP(nr)          (0x74 + (nr) * 0x10)
  76 #define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step))
  77 #define F75375_REG_FAN_B_SPEED(nr, step) \
  78         ((0xA5 + (nr) * 0x10) + (step) * 2)
  79
  80 #define F75375_REG_PWM1_RAISE_DUTY      0x69
  81 #define F75375_REG_PWM2_RAISE_DUTY      0x6A
  82 #define F75375_REG_PWM1_DROP_DUTY       0x6B
  83 #define F75375_REG_PWM2_DROP_DUTY       0x6C
  84
  85 #define FAN_CTRL_LINEAR(nr)             (4 + nr)
  86 #define FAN_CTRL_MODE(nr)               (5 + ((nr) * 2))
  87
  88 /*
  89  * Data structures and manipulation thereof
  90  */
  91
  92 struct f75375_data {
  93         unsigned short addr;
  94         struct i2c_client *client;
  95         struct device *hwmon_dev;
  96
  97         const char *name;
  98         int kind;
  99         struct mutex update_lock; /* protect register access */
 100         char valid;
 101         unsigned long last_updated;     /* In jiffies */
 102         unsigned long last_limits;      /* In jiffies */
 103
 104         /* Register values */
 105         u8 in[4];
 106         u8 in_max[4];
 107         u8 in_min[4];
 108         u16 fan[2];
 109         u16 fan_min[2];
 110         u16 fan_full[2];
 111         u16 fan_exp[2];
 112         u8 fan_timer;
 113         u8 pwm[2];
 114         u8 pwm_mode[2];
 115         u8 pwm_enable[2];
 116         s8 temp[2];
 117         s8 temp_high[2];
 118         s8 temp_max_hyst[2];
 119 };
 120
 121 static int f75375_attach_adapter(struct i2c_adapter *adapter);
 122 static int f75375_detect(struct i2c_adapter *adapter, int address, int kind);
 123 static int f75375_detach_client(struct i2c_client *client);
 124 static int f75375_probe(struct i2c_client *client);
 125 static int f75375_remove(struct i2c_client *client);
 126
 127 static struct i2c_driver f75375_legacy_driver = {
 128         .driver = {
 129                 .name = "f75375_legacy",
 130         },
 131         .attach_adapter = f75375_attach_adapter,
 132         .detach_client = f75375_detach_client,
 133 };
 134
 135 static struct i2c_driver f75375_driver = {
 136         .driver = {
 137                 .name = "f75375",
 138         },
 139         .probe = f75375_probe,
 140         .remove = f75375_remove,
 141 };
 142
 143 static inline int f75375_read8(struct i2c_client *client, u8 reg)
 144 {
 145         return i2c_smbus_read_byte_data(client, reg);
 146 }
 147
 148 /* in most cases, should be called while holding update_lock */
 149 static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
 150 {
 151         return ((i2c_smbus_read_byte_data(client, reg) << 8)
 152                 | i2c_smbus_read_byte_data(client, reg + 1));
 153 }
 154
 155 static inline void f75375_write8(struct i2c_client *client, u8 reg,
 156                 u8 value)
 157 {
 158         i2c_smbus_write_byte_data(client, reg, value);
 159 }
 160
 161 static inline void f75375_write16(struct i2c_client *client, u8 reg,
 162                 u16 value)
 163 {
 164         int err = i2c_smbus_write_byte_data(client, reg, (value << 8));
 165         if (err)
 166                 return;
 167         i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
 168 }
 169
 170 static struct f75375_data *f75375_update_device(struct device *dev)
 171 {
 172         struct i2c_client *client = to_i2c_client(dev);
 173         struct f75375_data *data = i2c_get_clientdata(client);
 174         int nr;
 175
 176         mutex_lock(&data->update_lock);
 177
 178         /* Limit registers cache is refreshed after 60 seconds */
 179         if (time_after(jiffies, data->last_limits + 60 * HZ)
 180                 || !data->valid) {
 181                 for (nr = 0; nr < 2; nr++) {
 182                         data->temp_high[nr] =
 183                                 f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
 184                         data->temp_max_hyst[nr] =
 185                                 f75375_read8(client, F75375_REG_TEMP_HYST(nr));
 186                         data->fan_full[nr] =
 187                                 f75375_read16(client, F75375_REG_FAN_FULL(nr));
 188                         data->fan_min[nr] =
 189                                 f75375_read16(client, F75375_REG_FAN_MIN(nr));
 190                         data->fan_exp[nr] =
 191                                 f75375_read16(client, F75375_REG_FAN_EXP(nr));
 192                         data->pwm[nr] = f75375_read8(client,
 193                                 F75375_REG_FAN_PWM_DUTY(nr));
 194
 195                 }
 196                 for (nr = 0; nr < 4; nr++) {
 197                         data->in_max[nr] =
 198                                 f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
 199                         data->in_min[nr] =
 200                                 f75375_read8(client, F75375_REG_VOLT_LOW(nr));
 201                 }
 202                 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
 203                 data->last_limits = jiffies;
 204         }
 205
 206         /* Measurement registers cache is refreshed after 2 second */
 207         if (time_after(jiffies, data->last_updated + 2 * HZ)
 208                 || !data->valid) {
 209                 for (nr = 0; nr < 2; nr++) {
 210                         data->temp[nr] =
 211                                 f75375_read8(client, F75375_REG_TEMP(nr));
 212                         data->fan[nr] =
 213                                 f75375_read16(client, F75375_REG_FAN(nr));
 214                 }
 215                 for (nr = 0; nr < 4; nr++)
 216                         data->in[nr] =
 217                                 f75375_read8(client, F75375_REG_VOLT(nr));
 218
 219                 data->last_updated = jiffies;
 220                 data->valid = 1;
 221         }
 222
 223         mutex_unlock(&data->update_lock);
 224         return data;
 225 }
 226
 227 static inline u16 rpm_from_reg(u16 reg)
 228 {
 229         if (reg == 0 || reg == 0xffff)
 230                 return 0;
 231         return (1500000 / reg);
 232 }
 233
 234 static inline u16 rpm_to_reg(int rpm)
 235 {
 236         if (rpm < 367 || rpm > 0xffff)
 237                 return 0xffff;
 238         return (1500000 / rpm);
 239 }
 240
 241 static ssize_t set_fan_min(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_min[nr] = rpm_to_reg(val);
 251         f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
 252         mutex_unlock(&data->update_lock);
 253         return count;
 254 }
 255
 256 static ssize_t set_fan_exp(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->fan_exp[nr] = rpm_to_reg(val);
 266         f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_exp[nr]);
 267         mutex_unlock(&data->update_lock);
 268         return count;
 269 }
 270
 271 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 272                 const char *buf, size_t count)
 273 {
 274         int nr = to_sensor_dev_attr(attr)->index;
 275         struct i2c_client *client = to_i2c_client(dev);
 276         struct f75375_data *data = i2c_get_clientdata(client);
 277         int val = simple_strtoul(buf, NULL, 10);
 278
 279         mutex_lock(&data->update_lock);
 280         data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
 281         f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]);
 282         mutex_unlock(&data->update_lock);
 283         return count;
 284 }
 285
 286 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
 287                 *attr, char *buf)
 288 {
 289         int nr = to_sensor_dev_attr(attr)->index;
 290         struct f75375_data *data = f75375_update_device(dev);
 291         return sprintf(buf, "%d\n", data->pwm_enable[nr]);
 292 }
 293
 294 static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
 295 {
 296         struct f75375_data *data = i2c_get_clientdata(client);
 297         u8 fanmode;
 298
 299         if (val < 0 || val > 4)
 300                 return -EINVAL;
 301
 302         fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
 303         fanmode = ~(3 << FAN_CTRL_MODE(nr));
 304
 305         switch (val) {
 306         case 0: /* Full speed */
 307                 fanmode  |= (3 << FAN_CTRL_MODE(nr));
 308                 data->pwm[nr] = 255;
 309                 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
 310                                 data->pwm[nr]);
 311                 break;
 312         case 1: /* PWM */
 313                 fanmode  |= (3 << FAN_CTRL_MODE(nr));
 314                 break;
 315         case 2: /* AUTOMATIC*/
 316                 fanmode  |= (2 << FAN_CTRL_MODE(nr));
 317                 break;
 318         case 3: /* fan speed */
 319                 break;
 320         }
 321         f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
 322         data->pwm_enable[nr] = val;
 323         return 0;
 324 }
 325
 326 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
 327                 const char *buf, size_t count)
 328 {
 329         int nr = to_sensor_dev_attr(attr)->index;
 330         struct i2c_client *client = to_i2c_client(dev);
 331         struct f75375_data *data = i2c_get_clientdata(client);
 332         int val = simple_strtoul(buf, NULL, 10);
 333         int err = 0;
 334
 335         mutex_lock(&data->update_lock);
 336         err = set_pwm_enable_direct(client, nr, val);
 337         mutex_unlock(&data->update_lock);
 338         return err ? err : count;
 339 }
 340
 341 static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
 342                 const char *buf, size_t count)
 343 {
 344         int nr = to_sensor_dev_attr(attr)->index;
 345         struct i2c_client *client = to_i2c_client(dev);
 346         struct f75375_data *data = i2c_get_clientdata(client);
 347         int val = simple_strtoul(buf, NULL, 10);
 348         u8 conf = 0;
 349
 350         if (!(val == 0 || val == 1))
 351                 return -EINVAL;
 352
 353         mutex_lock(&data->update_lock);
 354         conf = f75375_read8(client, F75375_REG_CONFIG1);
 355         conf = ~(1 << FAN_CTRL_LINEAR(nr));
 356
 357         if (val == 0)
 358                 conf |= (1 << FAN_CTRL_LINEAR(nr)) ;
 359
 360         f75375_write8(client, F75375_REG_CONFIG1, conf);
 361         data->pwm_mode[nr] = val;
 362         mutex_unlock(&data->update_lock);
 363         return count;
 364 }
 365
 366 static ssize_t show_pwm(struct device *dev, struct device_attribute
 367                 *attr, char *buf)
 368 {
 369         int nr = to_sensor_dev_attr(attr)->index;
 370         struct f75375_data *data = f75375_update_device(dev);
 371         return sprintf(buf, "%d\n", data->pwm[nr]);
 372 }
 373
 374 static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
 375                 *attr, char *buf)
 376 {
 377         int nr = to_sensor_dev_attr(attr)->index;
 378         struct f75375_data *data = f75375_update_device(dev);
 379         return sprintf(buf, "%d\n", data->pwm_mode[nr]);
 380 }
 381
 382 #define VOLT_FROM_REG(val) ((val) * 8)
 383 #define VOLT_TO_REG(val) ((val) / 8)
 384
 385 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 386                 char *buf)
 387 {
 388         int nr = to_sensor_dev_attr(attr)->index;
 389         struct f75375_data *data = f75375_update_device(dev);
 390         return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
 391 }
 392
 393 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
 394                 char *buf)
 395 {
 396         int nr = to_sensor_dev_attr(attr)->index;
 397         struct f75375_data *data = f75375_update_device(dev);
 398         return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
 399 }
 400
 401 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
 402                 char *buf)
 403 {
 404         int nr = to_sensor_dev_attr(attr)->index;
 405         struct f75375_data *data = f75375_update_device(dev);
 406         return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
 407 }
 408
 409 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
 410                 const char *buf, size_t count)
 411 {
 412         int nr = to_sensor_dev_attr(attr)->index;
 413         struct i2c_client *client = to_i2c_client(dev);
 414         struct f75375_data *data = i2c_get_clientdata(client);
 415         int val = simple_strtoul(buf, NULL, 10);
 416         val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
 417         mutex_lock(&data->update_lock);
 418         data->in_max[nr] = val;
 419         f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
 420         mutex_unlock(&data->update_lock);
 421         return count;
 422 }
 423
 424 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
 425                 const char *buf, size_t count)
 426 {
 427         int nr = to_sensor_dev_attr(attr)->index;
 428         struct i2c_client *client = to_i2c_client(dev);
 429         struct f75375_data *data = i2c_get_clientdata(client);
 430         int val = simple_strtoul(buf, NULL, 10);
 431         val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
 432         mutex_lock(&data->update_lock);
 433         data->in_min[nr] = val;
 434         f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
 435         mutex_unlock(&data->update_lock);
 436         return count;
 437 }
 438 #define TEMP_FROM_REG(val) ((val) * 1000)
 439 #define TEMP_TO_REG(val) ((val) / 1000)
 440
 441 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 442                 char *buf)
 443 {
 444         int nr = to_sensor_dev_attr(attr)->index;
 445         struct f75375_data *data = f75375_update_device(dev);
 446         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
 447 }
 448
 449 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
 450                 char *buf)
 451 {
 452         int nr = to_sensor_dev_attr(attr)->index;
 453         struct f75375_data *data = f75375_update_device(dev);
 454         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
 455 }
 456
 457 static ssize_t show_temp_max_hyst(struct device *dev,
 458                 struct device_attribute *attr, char *buf)
 459 {
 460         int nr = to_sensor_dev_attr(attr)->index;
 461         struct f75375_data *data = f75375_update_device(dev);
 462         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
 463 }
 464
 465 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
 466                 const char *buf, size_t count)
 467 {
 468         int nr = to_sensor_dev_attr(attr)->index;
 469         struct i2c_client *client = to_i2c_client(dev);
 470         struct f75375_data *data = i2c_get_clientdata(client);
 471         int val = simple_strtol(buf, NULL, 10);
 472         val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
 473         mutex_lock(&data->update_lock);
 474         data->temp_high[nr] = val;
 475         f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
 476         mutex_unlock(&data->update_lock);
 477         return count;
 478 }
 479
 480 static ssize_t set_temp_max_hyst(struct device *dev,
 481         struct device_attribute *attr, const char *buf, size_t count)
 482 {
 483         int nr = to_sensor_dev_attr(attr)->index;
 484         struct i2c_client *client = to_i2c_client(dev);
 485         struct f75375_data *data = i2c_get_clientdata(client);
 486         int val = simple_strtol(buf, NULL, 10);
 487         val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
 488         mutex_lock(&data->update_lock);
 489         data->temp_max_hyst[nr] = val;
 490         f75375_write8(client, F75375_REG_TEMP_HYST(nr),
 491                 data->temp_max_hyst[nr]);
 492         mutex_unlock(&data->update_lock);
 493         return count;
 494 }
 495
 496 #define show_fan(thing) \
 497 static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
 498                         char *buf)\
 499 {\
 500         int nr = to_sensor_dev_attr(attr)->index;\
 501         struct f75375_data *data = f75375_update_device(dev); \
 502         return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
 503 }
 504
 505 show_fan(fan);
 506 show_fan(fan_min);
 507 show_fan(fan_full);
 508 show_fan(fan_exp);
 509
 510 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 511 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
 512         show_in_max, set_in_max, 0);
 513 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
 514         show_in_min, set_in_min, 0);
 515 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 516 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
 517         show_in_max, set_in_max, 1);
 518 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
 519         show_in_min, set_in_min, 1);
 520 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 521 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
 522         show_in_max, set_in_max, 2);
 523 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
 524         show_in_min, set_in_min, 2);
 525 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 526 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
 527         show_in_max, set_in_max, 3);
 528 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
 529         show_in_min, set_in_min, 3);
 530 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
 531 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
 532         show_temp_max_hyst, set_temp_max_hyst, 0);
 533 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
 534         show_temp_max, set_temp_max, 0);
 535 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
 536 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
 537         show_temp_max_hyst, set_temp_max_hyst, 1);
 538 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
 539         show_temp_max, set_temp_max, 1);
 540 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
 541 static SENSOR_DEVICE_ATTR(fan1_full, S_IRUGO, show_fan_full, NULL, 0);
 542 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
 543         show_fan_min, set_fan_min, 0);
 544 static SENSOR_DEVICE_ATTR(fan1_exp, S_IRUGO|S_IWUSR,
 545         show_fan_exp, set_fan_exp, 0);
 546 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
 547 static SENSOR_DEVICE_ATTR(fan2_full, S_IRUGO, show_fan_full, NULL, 1);
 548 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
 549         show_fan_min, set_fan_min, 1);
 550 static SENSOR_DEVICE_ATTR(fan2_exp, S_IRUGO|S_IWUSR,
 551         show_fan_exp, set_fan_exp, 1);
 552 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
 553         show_pwm, set_pwm, 0);
 554 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
 555         show_pwm_enable, set_pwm_enable, 0);
 556 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
 557         show_pwm_mode, set_pwm_mode, 0);
 558 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
 559         show_pwm, set_pwm, 1);
 560 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
 561         show_pwm_enable, set_pwm_enable, 1);
 562 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
 563         show_pwm_mode, set_pwm_mode, 1);
 564
 565 static struct attribute *f75375_attributes[] = {
 566         &sensor_dev_attr_temp1_input.dev_attr.attr,
 567         &sensor_dev_attr_temp1_max.dev_attr.attr,
 568         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
 569         &sensor_dev_attr_temp2_input.dev_attr.attr,
 570         &sensor_dev_attr_temp2_max.dev_attr.attr,
 571         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
 572         &sensor_dev_attr_fan1_input.dev_attr.attr,
 573         &sensor_dev_attr_fan1_full.dev_attr.attr,
 574         &sensor_dev_attr_fan1_min.dev_attr.attr,
 575         &sensor_dev_attr_fan1_exp.dev_attr.attr,
 576         &sensor_dev_attr_fan2_input.dev_attr.attr,
 577         &sensor_dev_attr_fan2_full.dev_attr.attr,
 578         &sensor_dev_attr_fan2_min.dev_attr.attr,
 579         &sensor_dev_attr_fan2_exp.dev_attr.attr,
 580         &sensor_dev_attr_pwm1.dev_attr.attr,
 581         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
 582         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
 583         &sensor_dev_attr_pwm2.dev_attr.attr,
 584         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
 585         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
 586         &sensor_dev_attr_in0_input.dev_attr.attr,
 587         &sensor_dev_attr_in0_max.dev_attr.attr,
 588         &sensor_dev_attr_in0_min.dev_attr.attr,
 589         &sensor_dev_attr_in1_input.dev_attr.attr,
 590         &sensor_dev_attr_in1_max.dev_attr.attr,
 591         &sensor_dev_attr_in1_min.dev_attr.attr,
 592         &sensor_dev_attr_in2_input.dev_attr.attr,
 593         &sensor_dev_attr_in2_max.dev_attr.attr,
 594         &sensor_dev_attr_in2_min.dev_attr.attr,
 595         &sensor_dev_attr_in3_input.dev_attr.attr,
 596         &sensor_dev_attr_in3_max.dev_attr.attr,
 597         &sensor_dev_attr_in3_min.dev_attr.attr,
 598         NULL
 599 };
 600
 601 static const struct attribute_group f75375_group = {
 602         .attrs = f75375_attributes,
 603 };
 604
 605 static int f75375_detach_client(struct i2c_client *client)
 606 {
 607         int err;
 608
 609         f75375_remove(client);
 610         err = i2c_detach_client(client);
 611         if (err) {
 612                 dev_err(&client->dev,
 613                         "Client deregistration failed, "
 614                         "client not detached.\n");
 615                 return err;
 616         }
 617         kfree(client);
 618         return 0;
 619 }
 620
 621 static void f75375_init(struct i2c_client *client, struct f75375_data *data,
 622                 struct f75375s_platform_data *f75375s_pdata)
 623 {
 624         int nr;
 625         set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
 626         set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
 627         for (nr = 0; nr < 2; nr++) {
 628                 data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255);
 629                 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
 630                         data->pwm[nr]);
 631         }
 632
 633 }
 634
 635 static int f75375_probe(struct i2c_client *client)
 636 {
 637         struct f75375_data *data = i2c_get_clientdata(client);
 638         struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data;
 639         int err;
 640
 641         if (!i2c_check_functionality(client->adapter,
 642                                 I2C_FUNC_SMBUS_BYTE_DATA))
 643                 return -EIO;
 644         if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL)))
 645                 return -ENOMEM;
 646
 647         i2c_set_clientdata(client, data);
 648         data->client = client;
 649         mutex_init(&data->update_lock);
 650
 651         if (strcmp(client->name, "f75375") == 0)
 652                 data->kind = f75375;
 653         else if (strcmp(client->name, "f75373") == 0)
 654                 data->kind = f75373;
 655         else {
 656                 dev_err(&client->dev, "Unsupported device: %s\n", client->name);
 657                 return -ENODEV;
 658         }
 659
 660         if ((err = sysfs_create_group(&client->dev.kobj, &f75375_group)))
 661                 goto exit_free;
 662
 663         if (data->kind == f75375) {
 664                 err = sysfs_chmod_file(&client->dev.kobj,
 665                         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
 666                         S_IRUGO | S_IWUSR);
 667                 if (err)
 668                         goto exit_remove;
 669                 err = sysfs_chmod_file(&client->dev.kobj,
 670                         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
 671                         S_IRUGO | S_IWUSR);
 672                 if (err)
 673                         goto exit_remove;
 674         }
 675
 676         data->hwmon_dev = hwmon_device_register(&client->dev);
 677         if (IS_ERR(data->hwmon_dev)) {
 678                 err = PTR_ERR(data->hwmon_dev);
 679                 goto exit_remove;
 680         }
 681
 682         if (f75375s_pdata != NULL)
 683                 f75375_init(client, data, f75375s_pdata);
 684
 685         return 0;
 686
 687 exit_remove:
 688         sysfs_remove_group(&client->dev.kobj, &f75375_group);
 689 exit_free:
 690         kfree(data);
 691         i2c_set_clientdata(client, NULL);
 692         return err;
 693 }
 694
 695 static int f75375_remove(struct i2c_client *client)
 696 {
 697         struct f75375_data *data = i2c_get_clientdata(client);
 698         hwmon_device_unregister(data->hwmon_dev);
 699         sysfs_remove_group(&client->dev.kobj, &f75375_group);
 700         kfree(data);
 701         i2c_set_clientdata(client, NULL);
 702         return 0;
 703 }
 704
 705 static int f75375_attach_adapter(struct i2c_adapter *adapter)
 706 {
 707         if (!(adapter->class & I2C_CLASS_HWMON))
 708                 return 0;
 709         return i2c_probe(adapter, &addr_data, f75375_detect);
 710 }
 711
 712 /* This function is called by i2c_probe */
 713 static int f75375_detect(struct i2c_adapter *adapter, int address, int kind)
 714 {
 715         struct i2c_client *client;
 716         u8 version = 0;
 717         int err = 0;
 718         const char *name = "";
 719
 720         if (!(client = kzalloc(sizeof(*client), GFP_KERNEL))) {
 721                 err = -ENOMEM;
 722                 goto exit;
 723         }
 724         client->addr = address;
 725         client->adapter = adapter;
 726         client->driver = &f75375_legacy_driver;
 727
 728         if (kind < 0) {
 729                 u16 vendid = f75375_read16(client, F75375_REG_VENDOR);
 730                 u16 chipid = f75375_read16(client, F75375_CHIP_ID);
 731                 version = f75375_read8(client, F75375_REG_VERSION);
 732                 if (chipid == 0x0306 && vendid == 0x1934) {
 733                         kind = f75375;
 734                 } else if (chipid == 0x0204 && vendid == 0x1934) {
 735                         kind = f75373;
 736                 } else {
 737                         dev_err(&adapter->dev,
 738                                 "failed,%02X,%02X,%02X\n",
 739                                 chipid, version, vendid);
 740                         goto exit_free;
 741                 }
 742         }
 743
 744         if (kind == f75375) {
 745                 name = "f75375";
 746         } else if (kind == f75373) {
 747                 name = "f75373";
 748         }
 749         dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
 750         strlcpy(client->name, name, I2C_NAME_SIZE);
 751
 752         if ((err = i2c_attach_client(client)))
 753                 goto exit_free;
 754
 755         if ((err = f75375_probe(client)) < 0)
 756                 goto exit_detach;
 757
 758         return 0;
 759
 760 exit_detach:
 761         i2c_detach_client(client);
 762 exit_free:
 763         kfree(client);
 764 exit:
 765         return err;
 766 }
 767
 768 static int __init sensors_f75375_init(void)
 769 {
 770         int status;
 771         status = i2c_add_driver(&f75375_driver);
 772         if (status)
 773                 return status;
 774
 775         status = i2c_add_driver(&f75375_legacy_driver);
 776         if (status)
 777                 i2c_del_driver(&f75375_driver);
 778
 779         return status;
 780 }
 781
 782 static void __exit sensors_f75375_exit(void)
 783 {
 784         i2c_del_driver(&f75375_legacy_driver);
 785         i2c_del_driver(&f75375_driver);
 786 }
 787
 788 MODULE_AUTHOR("Riku Voipio <riku.voipio@movial.fi>");
 789 MODULE_LICENSE("GPL");
 790 MODULE_DESCRIPTION("F75373/F75375 hardware monitoring driver");
 791
 792 module_init(sensors_f75375_init);
 793 module_exit(sensors_f75375_exit);