Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
emc6w201.c
Go to the documentation of this file.
1 /*
2  * emc6w201.c - Hardware monitoring driver for the SMSC EMC6W201
3  * Copyright (C) 2011 Jean Delvare <[email protected]>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18  */
19 
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/slab.h>
23 #include <linux/jiffies.h>
24 #include <linux/i2c.h>
25 #include <linux/hwmon.h>
26 #include <linux/hwmon-sysfs.h>
27 #include <linux/err.h>
28 #include <linux/mutex.h>
29 
30 /*
31  * Addresses to scan
32  */
33 
34 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
35 
36 /*
37  * The EMC6W201 registers
38  */
39 
40 #define EMC6W201_REG_IN(nr) (0x20 + (nr))
41 #define EMC6W201_REG_TEMP(nr) (0x26 + (nr))
42 #define EMC6W201_REG_FAN(nr) (0x2C + (nr) * 2)
43 #define EMC6W201_REG_COMPANY 0x3E
44 #define EMC6W201_REG_VERSTEP 0x3F
45 #define EMC6W201_REG_CONFIG 0x40
46 #define EMC6W201_REG_IN_LOW(nr) (0x4A + (nr) * 2)
47 #define EMC6W201_REG_IN_HIGH(nr) (0x4B + (nr) * 2)
48 #define EMC6W201_REG_TEMP_LOW(nr) (0x56 + (nr) * 2)
49 #define EMC6W201_REG_TEMP_HIGH(nr) (0x57 + (nr) * 2)
50 #define EMC6W201_REG_FAN_MIN(nr) (0x62 + (nr) * 2)
51 
52 enum { input, min, max } subfeature;
53 
54 /*
55  * Per-device data
56  */
57 
58 struct emc6w201_data {
59  struct device *hwmon_dev;
60  struct mutex update_lock;
61  char valid; /* zero until following fields are valid */
62  unsigned long last_updated; /* in jiffies */
63 
64  /* registers values */
65  u8 in[3][6];
66  s8 temp[3][6];
67  u16 fan[2][5];
68 };
69 
70 /*
71  * Combine LSB and MSB registers in a single value
72  * Locking: must be called with data->update_lock held
73  */
74 static u16 emc6w201_read16(struct i2c_client *client, u8 reg)
75 {
76  int lsb, msb;
77 
78  lsb = i2c_smbus_read_byte_data(client, reg);
79  msb = i2c_smbus_read_byte_data(client, reg + 1);
80  if (unlikely(lsb < 0 || msb < 0)) {
81  dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
82  16, "read", reg);
83  return 0xFFFF; /* Arbitrary value */
84  }
85 
86  return (msb << 8) | lsb;
87 }
88 
89 /*
90  * Write 16-bit value to LSB and MSB registers
91  * Locking: must be called with data->update_lock held
92  */
93 static int emc6w201_write16(struct i2c_client *client, u8 reg, u16 val)
94 {
95  int err;
96 
97  err = i2c_smbus_write_byte_data(client, reg, val & 0xff);
98  if (likely(!err))
99  err = i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
100  if (unlikely(err < 0))
101  dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
102  16, "write", reg);
103 
104  return err;
105 }
106 
107 /* Read 8-bit value from register */
108 static u8 emc6w201_read8(struct i2c_client *client, u8 reg)
109 {
110  int val;
111 
112  val = i2c_smbus_read_byte_data(client, reg);
113  if (unlikely(val < 0)) {
114  dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
115  8, "read", reg);
116  return 0x00; /* Arbitrary value */
117  }
118 
119  return val;
120 }
121 
122 /* Write 8-bit value to register */
123 static int emc6w201_write8(struct i2c_client *client, u8 reg, u8 val)
124 {
125  int err;
126 
127  err = i2c_smbus_write_byte_data(client, reg, val);
128  if (unlikely(err < 0))
129  dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
130  8, "write", reg);
131 
132  return err;
133 }
134 
135 static struct emc6w201_data *emc6w201_update_device(struct device *dev)
136 {
137  struct i2c_client *client = to_i2c_client(dev);
138  struct emc6w201_data *data = i2c_get_clientdata(client);
139  int nr;
140 
141  mutex_lock(&data->update_lock);
142 
143  if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
144  for (nr = 0; nr < 6; nr++) {
145  data->in[input][nr] =
146  emc6w201_read8(client,
147  EMC6W201_REG_IN(nr));
148  data->in[min][nr] =
149  emc6w201_read8(client,
150  EMC6W201_REG_IN_LOW(nr));
151  data->in[max][nr] =
152  emc6w201_read8(client,
153  EMC6W201_REG_IN_HIGH(nr));
154  }
155 
156  for (nr = 0; nr < 6; nr++) {
157  data->temp[input][nr] =
158  emc6w201_read8(client,
159  EMC6W201_REG_TEMP(nr));
160  data->temp[min][nr] =
161  emc6w201_read8(client,
162  EMC6W201_REG_TEMP_LOW(nr));
163  data->temp[max][nr] =
164  emc6w201_read8(client,
165  EMC6W201_REG_TEMP_HIGH(nr));
166  }
167 
168  for (nr = 0; nr < 5; nr++) {
169  data->fan[input][nr] =
170  emc6w201_read16(client,
171  EMC6W201_REG_FAN(nr));
172  data->fan[min][nr] =
173  emc6w201_read16(client,
174  EMC6W201_REG_FAN_MIN(nr));
175  }
176 
177  data->last_updated = jiffies;
178  data->valid = 1;
179  }
180 
181  mutex_unlock(&data->update_lock);
182 
183  return data;
184 }
185 
186 /*
187  * Sysfs callback functions
188  */
189 
190 static const u16 nominal_mv[6] = { 2500, 1500, 3300, 5000, 1500, 1500 };
191 
192 static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
193  char *buf)
194 {
195  struct emc6w201_data *data = emc6w201_update_device(dev);
196  int sf = to_sensor_dev_attr_2(devattr)->index;
197  int nr = to_sensor_dev_attr_2(devattr)->nr;
198 
199  return sprintf(buf, "%u\n",
200  (unsigned)data->in[sf][nr] * nominal_mv[nr] / 0xC0);
201 }
202 
203 static ssize_t set_in(struct device *dev, struct device_attribute *devattr,
204  const char *buf, size_t count)
205 {
206  struct i2c_client *client = to_i2c_client(dev);
207  struct emc6w201_data *data = i2c_get_clientdata(client);
208  int sf = to_sensor_dev_attr_2(devattr)->index;
209  int nr = to_sensor_dev_attr_2(devattr)->nr;
210  int err;
211  long val;
212  u8 reg;
213 
214  err = kstrtol(buf, 10, &val);
215  if (err < 0)
216  return err;
217 
218  val = DIV_ROUND_CLOSEST(val * 0xC0, nominal_mv[nr]);
219  reg = (sf == min) ? EMC6W201_REG_IN_LOW(nr)
220  : EMC6W201_REG_IN_HIGH(nr);
221 
222  mutex_lock(&data->update_lock);
223  data->in[sf][nr] = SENSORS_LIMIT(val, 0, 255);
224  err = emc6w201_write8(client, reg, data->in[sf][nr]);
225  mutex_unlock(&data->update_lock);
226 
227  return err < 0 ? err : count;
228 }
229 
230 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
231  char *buf)
232 {
233  struct emc6w201_data *data = emc6w201_update_device(dev);
234  int sf = to_sensor_dev_attr_2(devattr)->index;
235  int nr = to_sensor_dev_attr_2(devattr)->nr;
236 
237  return sprintf(buf, "%d\n", (int)data->temp[sf][nr] * 1000);
238 }
239 
240 static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
241  const char *buf, size_t count)
242 {
243  struct i2c_client *client = to_i2c_client(dev);
244  struct emc6w201_data *data = i2c_get_clientdata(client);
245  int sf = to_sensor_dev_attr_2(devattr)->index;
246  int nr = to_sensor_dev_attr_2(devattr)->nr;
247  int err;
248  long val;
249  u8 reg;
250 
251  err = kstrtol(buf, 10, &val);
252  if (err < 0)
253  return err;
254 
255  val /= 1000;
256  reg = (sf == min) ? EMC6W201_REG_TEMP_LOW(nr)
257  : EMC6W201_REG_TEMP_HIGH(nr);
258 
259  mutex_lock(&data->update_lock);
260  data->temp[sf][nr] = SENSORS_LIMIT(val, -127, 128);
261  err = emc6w201_write8(client, reg, data->temp[sf][nr]);
262  mutex_unlock(&data->update_lock);
263 
264  return err < 0 ? err : count;
265 }
266 
267 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
268  char *buf)
269 {
270  struct emc6w201_data *data = emc6w201_update_device(dev);
271  int sf = to_sensor_dev_attr_2(devattr)->index;
272  int nr = to_sensor_dev_attr_2(devattr)->nr;
273  unsigned rpm;
274 
275  if (data->fan[sf][nr] == 0 || data->fan[sf][nr] == 0xFFFF)
276  rpm = 0;
277  else
278  rpm = 5400000U / data->fan[sf][nr];
279 
280  return sprintf(buf, "%u\n", rpm);
281 }
282 
283 static ssize_t set_fan(struct device *dev, struct device_attribute *devattr,
284  const char *buf, size_t count)
285 {
286  struct i2c_client *client = to_i2c_client(dev);
287  struct emc6w201_data *data = i2c_get_clientdata(client);
288  int sf = to_sensor_dev_attr_2(devattr)->index;
289  int nr = to_sensor_dev_attr_2(devattr)->nr;
290  int err;
291  unsigned long val;
292 
293  err = kstrtoul(buf, 10, &val);
294  if (err < 0)
295  return err;
296 
297  if (val == 0) {
298  val = 0xFFFF;
299  } else {
300  val = DIV_ROUND_CLOSEST(5400000U, val);
301  val = SENSORS_LIMIT(val, 0, 0xFFFE);
302  }
303 
304  mutex_lock(&data->update_lock);
305  data->fan[sf][nr] = val;
306  err = emc6w201_write16(client, EMC6W201_REG_FAN_MIN(nr),
307  data->fan[sf][nr]);
308  mutex_unlock(&data->update_lock);
309 
310  return err < 0 ? err : count;
311 }
312 
313 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, input);
314 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
315  0, min);
316 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
317  0, max);
318 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, input);
319 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
320  1, min);
321 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
322  1, max);
323 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, input);
324 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
325  2, min);
326 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
327  2, max);
328 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, input);
329 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
330  3, min);
331 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
332  3, max);
333 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, input);
334 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
335  4, min);
336 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
337  4, max);
338 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, input);
339 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
340  5, min);
341 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
342  5, max);
343 
344 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, input);
345 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
346  0, min);
347 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
348  0, max);
349 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, input);
350 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
351  1, min);
352 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
353  1, max);
354 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, input);
355 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
356  2, min);
357 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
358  2, max);
359 static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 3, input);
360 static SENSOR_DEVICE_ATTR_2(temp4_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
361  3, min);
362 static SENSOR_DEVICE_ATTR_2(temp4_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
363  3, max);
364 static SENSOR_DEVICE_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, input);
365 static SENSOR_DEVICE_ATTR_2(temp5_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
366  4, min);
367 static SENSOR_DEVICE_ATTR_2(temp5_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
368  4, max);
369 static SENSOR_DEVICE_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, input);
370 static SENSOR_DEVICE_ATTR_2(temp6_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
371  5, min);
372 static SENSOR_DEVICE_ATTR_2(temp6_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
373  5, max);
374 
375 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, input);
376 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
377  0, min);
378 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, input);
379 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
380  1, min);
381 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, input);
382 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
383  2, min);
384 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, input);
385 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
386  3, min);
387 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, input);
388 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
389  4, min);
390 
391 static struct attribute *emc6w201_attributes[] = {
392  &sensor_dev_attr_in0_input.dev_attr.attr,
393  &sensor_dev_attr_in0_min.dev_attr.attr,
394  &sensor_dev_attr_in0_max.dev_attr.attr,
395  &sensor_dev_attr_in1_input.dev_attr.attr,
396  &sensor_dev_attr_in1_min.dev_attr.attr,
397  &sensor_dev_attr_in1_max.dev_attr.attr,
398  &sensor_dev_attr_in2_input.dev_attr.attr,
399  &sensor_dev_attr_in2_min.dev_attr.attr,
400  &sensor_dev_attr_in2_max.dev_attr.attr,
401  &sensor_dev_attr_in3_input.dev_attr.attr,
402  &sensor_dev_attr_in3_min.dev_attr.attr,
403  &sensor_dev_attr_in3_max.dev_attr.attr,
404  &sensor_dev_attr_in4_input.dev_attr.attr,
405  &sensor_dev_attr_in4_min.dev_attr.attr,
406  &sensor_dev_attr_in4_max.dev_attr.attr,
407  &sensor_dev_attr_in5_input.dev_attr.attr,
408  &sensor_dev_attr_in5_min.dev_attr.attr,
409  &sensor_dev_attr_in5_max.dev_attr.attr,
410 
411  &sensor_dev_attr_temp1_input.dev_attr.attr,
412  &sensor_dev_attr_temp1_min.dev_attr.attr,
413  &sensor_dev_attr_temp1_max.dev_attr.attr,
414  &sensor_dev_attr_temp2_input.dev_attr.attr,
415  &sensor_dev_attr_temp2_min.dev_attr.attr,
416  &sensor_dev_attr_temp2_max.dev_attr.attr,
417  &sensor_dev_attr_temp3_input.dev_attr.attr,
418  &sensor_dev_attr_temp3_min.dev_attr.attr,
419  &sensor_dev_attr_temp3_max.dev_attr.attr,
420  &sensor_dev_attr_temp4_input.dev_attr.attr,
421  &sensor_dev_attr_temp4_min.dev_attr.attr,
422  &sensor_dev_attr_temp4_max.dev_attr.attr,
423  &sensor_dev_attr_temp5_input.dev_attr.attr,
424  &sensor_dev_attr_temp5_min.dev_attr.attr,
425  &sensor_dev_attr_temp5_max.dev_attr.attr,
426  &sensor_dev_attr_temp6_input.dev_attr.attr,
427  &sensor_dev_attr_temp6_min.dev_attr.attr,
428  &sensor_dev_attr_temp6_max.dev_attr.attr,
429 
430  &sensor_dev_attr_fan1_input.dev_attr.attr,
431  &sensor_dev_attr_fan1_min.dev_attr.attr,
432  &sensor_dev_attr_fan2_input.dev_attr.attr,
433  &sensor_dev_attr_fan2_min.dev_attr.attr,
434  &sensor_dev_attr_fan3_input.dev_attr.attr,
435  &sensor_dev_attr_fan3_min.dev_attr.attr,
436  &sensor_dev_attr_fan4_input.dev_attr.attr,
437  &sensor_dev_attr_fan4_min.dev_attr.attr,
438  &sensor_dev_attr_fan5_input.dev_attr.attr,
439  &sensor_dev_attr_fan5_min.dev_attr.attr,
440  NULL
441 };
442 
443 static const struct attribute_group emc6w201_group = {
444  .attrs = emc6w201_attributes,
445 };
446 
447 /*
448  * Driver interface
449  */
450 
451 /* Return 0 if detection is successful, -ENODEV otherwise */
452 static int emc6w201_detect(struct i2c_client *client,
453  struct i2c_board_info *info)
454 {
455  struct i2c_adapter *adapter = client->adapter;
456  int company, verstep, config;
457 
458  if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
459  return -ENODEV;
460 
461  /* Identification */
462  company = i2c_smbus_read_byte_data(client, EMC6W201_REG_COMPANY);
463  if (company != 0x5C)
464  return -ENODEV;
465  verstep = i2c_smbus_read_byte_data(client, EMC6W201_REG_VERSTEP);
466  if (verstep < 0 || (verstep & 0xF0) != 0xB0)
467  return -ENODEV;
468  if ((verstep & 0x0F) > 2) {
469  dev_dbg(&client->dev, "Unknwown EMC6W201 stepping %d\n",
470  verstep & 0x0F);
471  return -ENODEV;
472  }
473 
474  /* Check configuration */
475  config = i2c_smbus_read_byte_data(client, EMC6W201_REG_CONFIG);
476  if (config < 0 || (config & 0xF4) != 0x04)
477  return -ENODEV;
478  if (!(config & 0x01)) {
479  dev_err(&client->dev, "Monitoring not enabled\n");
480  return -ENODEV;
481  }
482 
483  strlcpy(info->type, "emc6w201", I2C_NAME_SIZE);
484 
485  return 0;
486 }
487 
488 static int emc6w201_probe(struct i2c_client *client,
489  const struct i2c_device_id *id)
490 {
491  struct emc6w201_data *data;
492  int err;
493 
494  data = devm_kzalloc(&client->dev, sizeof(struct emc6w201_data),
495  GFP_KERNEL);
496  if (!data)
497  return -ENOMEM;
498 
499  i2c_set_clientdata(client, data);
500  mutex_init(&data->update_lock);
501 
502  /* Create sysfs attribute */
503  err = sysfs_create_group(&client->dev.kobj, &emc6w201_group);
504  if (err)
505  return err;
506 
507  /* Expose as a hwmon device */
508  data->hwmon_dev = hwmon_device_register(&client->dev);
509  if (IS_ERR(data->hwmon_dev)) {
510  err = PTR_ERR(data->hwmon_dev);
511  goto exit_remove;
512  }
513 
514  return 0;
515 
516  exit_remove:
517  sysfs_remove_group(&client->dev.kobj, &emc6w201_group);
518  return err;
519 }
520 
521 static int emc6w201_remove(struct i2c_client *client)
522 {
523  struct emc6w201_data *data = i2c_get_clientdata(client);
524 
525  hwmon_device_unregister(data->hwmon_dev);
526  sysfs_remove_group(&client->dev.kobj, &emc6w201_group);
527 
528  return 0;
529 }
530 
531 static const struct i2c_device_id emc6w201_id[] = {
532  { "emc6w201", 0 },
533  { }
534 };
535 MODULE_DEVICE_TABLE(i2c, emc6w201_id);
536 
537 static struct i2c_driver emc6w201_driver = {
538  .class = I2C_CLASS_HWMON,
539  .driver = {
540  .name = "emc6w201",
541  },
542  .probe = emc6w201_probe,
543  .remove = emc6w201_remove,
544  .id_table = emc6w201_id,
545  .detect = emc6w201_detect,
546  .address_list = normal_i2c,
547 };
548 
549 module_i2c_driver(emc6w201_driver);
550 
551 MODULE_AUTHOR("Jean Delvare <[email protected]>");
552 MODULE_DESCRIPTION("SMSC EMC6W201 hardware monitoring driver");
553 MODULE_LICENSE("GPL");
Generated on Thu Jan 10 2013 13:34:46 for Linux Kernel by   doxygen 1.8.2