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w83792d.c
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1 /*
2  * w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
3  * monitoring
4  * Copyright (C) 2004, 2005 Winbond Electronics Corp.
5  * Chunhao Huang <[email protected]>,
6  * Rudolf Marek <[email protected]>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  *
22  * Note:
23  * 1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
24  * 2. This driver is only for Winbond W83792D C version device, there
25  * are also some motherboards with B version W83792D device. The
26  * calculation method to in6-in7(measured value, limits) is a little
27  * different between C and B version. C or B version can be identified
28  * by CR[0x49h].
29  */
30 
31 /*
32  * Supports following chips:
33  *
34  * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
35  * w83792d 9 7 7 3 0x7a 0x5ca3 yes no
36  */
37 
38 #include <linux/module.h>
39 #include <linux/init.h>
40 #include <linux/slab.h>
41 #include <linux/i2c.h>
42 #include <linux/hwmon.h>
43 #include <linux/hwmon-sysfs.h>
44 #include <linux/err.h>
45 #include <linux/mutex.h>
46 #include <linux/sysfs.h>
47 #include <linux/jiffies.h>
48 
49 /* Addresses to scan */
50 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
51  I2C_CLIENT_END };
52 
53 /* Insmod parameters */
54 
55 static unsigned short force_subclients[4];
56 module_param_array(force_subclients, short, NULL, 0);
57 MODULE_PARM_DESC(force_subclients, "List of subclient addresses: "
58  "{bus, clientaddr, subclientaddr1, subclientaddr2}");
59 
60 static bool init;
61 module_param(init, bool, 0);
62 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
63 
64 /* The W83792D registers */
65 static const u8 W83792D_REG_IN[9] = {
66  0x20, /* Vcore A in DataSheet */
67  0x21, /* Vcore B in DataSheet */
68  0x22, /* VIN0 in DataSheet */
69  0x23, /* VIN1 in DataSheet */
70  0x24, /* VIN2 in DataSheet */
71  0x25, /* VIN3 in DataSheet */
72  0x26, /* 5VCC in DataSheet */
73  0xB0, /* 5VSB in DataSheet */
74  0xB1 /* VBAT in DataSheet */
75 };
76 #define W83792D_REG_LOW_BITS1 0x3E /* Low Bits I in DataSheet */
77 #define W83792D_REG_LOW_BITS2 0x3F /* Low Bits II in DataSheet */
78 static const u8 W83792D_REG_IN_MAX[9] = {
79  0x2B, /* Vcore A High Limit in DataSheet */
80  0x2D, /* Vcore B High Limit in DataSheet */
81  0x2F, /* VIN0 High Limit in DataSheet */
82  0x31, /* VIN1 High Limit in DataSheet */
83  0x33, /* VIN2 High Limit in DataSheet */
84  0x35, /* VIN3 High Limit in DataSheet */
85  0x37, /* 5VCC High Limit in DataSheet */
86  0xB4, /* 5VSB High Limit in DataSheet */
87  0xB6 /* VBAT High Limit in DataSheet */
88 };
89 static const u8 W83792D_REG_IN_MIN[9] = {
90  0x2C, /* Vcore A Low Limit in DataSheet */
91  0x2E, /* Vcore B Low Limit in DataSheet */
92  0x30, /* VIN0 Low Limit in DataSheet */
93  0x32, /* VIN1 Low Limit in DataSheet */
94  0x34, /* VIN2 Low Limit in DataSheet */
95  0x36, /* VIN3 Low Limit in DataSheet */
96  0x38, /* 5VCC Low Limit in DataSheet */
97  0xB5, /* 5VSB Low Limit in DataSheet */
98  0xB7 /* VBAT Low Limit in DataSheet */
99 };
100 static const u8 W83792D_REG_FAN[7] = {
101  0x28, /* FAN 1 Count in DataSheet */
102  0x29, /* FAN 2 Count in DataSheet */
103  0x2A, /* FAN 3 Count in DataSheet */
104  0xB8, /* FAN 4 Count in DataSheet */
105  0xB9, /* FAN 5 Count in DataSheet */
106  0xBA, /* FAN 6 Count in DataSheet */
107  0xBE /* FAN 7 Count in DataSheet */
108 };
109 static const u8 W83792D_REG_FAN_MIN[7] = {
110  0x3B, /* FAN 1 Count Low Limit in DataSheet */
111  0x3C, /* FAN 2 Count Low Limit in DataSheet */
112  0x3D, /* FAN 3 Count Low Limit in DataSheet */
113  0xBB, /* FAN 4 Count Low Limit in DataSheet */
114  0xBC, /* FAN 5 Count Low Limit in DataSheet */
115  0xBD, /* FAN 6 Count Low Limit in DataSheet */
116  0xBF /* FAN 7 Count Low Limit in DataSheet */
117 };
118 #define W83792D_REG_FAN_CFG 0x84 /* FAN Configuration in DataSheet */
119 static const u8 W83792D_REG_FAN_DIV[4] = {
120  0x47, /* contains FAN2 and FAN1 Divisor */
121  0x5B, /* contains FAN4 and FAN3 Divisor */
122  0x5C, /* contains FAN6 and FAN5 Divisor */
123  0x9E /* contains FAN7 Divisor. */
124 };
125 static const u8 W83792D_REG_PWM[7] = {
126  0x81, /* FAN 1 Duty Cycle, be used to control */
127  0x83, /* FAN 2 Duty Cycle, be used to control */
128  0x94, /* FAN 3 Duty Cycle, be used to control */
129  0xA3, /* FAN 4 Duty Cycle, be used to control */
130  0xA4, /* FAN 5 Duty Cycle, be used to control */
131  0xA5, /* FAN 6 Duty Cycle, be used to control */
132  0xA6 /* FAN 7 Duty Cycle, be used to control */
133 };
134 #define W83792D_REG_BANK 0x4E
135 #define W83792D_REG_TEMP2_CONFIG 0xC2
136 #define W83792D_REG_TEMP3_CONFIG 0xCA
137 
138 static const u8 W83792D_REG_TEMP1[3] = {
139  0x27, /* TEMP 1 in DataSheet */
140  0x39, /* TEMP 1 Over in DataSheet */
141  0x3A, /* TEMP 1 Hyst in DataSheet */
142 };
143 
144 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
145  { 0xC0, /* TEMP 2 in DataSheet */
146  0xC1, /* TEMP 2(0.5 deg) in DataSheet */
147  0xC5, /* TEMP 2 Over High part in DataSheet */
148  0xC6, /* TEMP 2 Over Low part in DataSheet */
149  0xC3, /* TEMP 2 Thyst High part in DataSheet */
150  0xC4 }, /* TEMP 2 Thyst Low part in DataSheet */
151  { 0xC8, /* TEMP 3 in DataSheet */
152  0xC9, /* TEMP 3(0.5 deg) in DataSheet */
153  0xCD, /* TEMP 3 Over High part in DataSheet */
154  0xCE, /* TEMP 3 Over Low part in DataSheet */
155  0xCB, /* TEMP 3 Thyst High part in DataSheet */
156  0xCC } /* TEMP 3 Thyst Low part in DataSheet */
157 };
158 
159 static const u8 W83792D_REG_THERMAL[3] = {
160  0x85, /* SmartFanI: Fan1 target value */
161  0x86, /* SmartFanI: Fan2 target value */
162  0x96 /* SmartFanI: Fan3 target value */
163 };
164 
165 static const u8 W83792D_REG_TOLERANCE[3] = {
166  0x87, /* (bit3-0)SmartFan Fan1 tolerance */
167  0x87, /* (bit7-4)SmartFan Fan2 tolerance */
168  0x97 /* (bit3-0)SmartFan Fan3 tolerance */
169 };
170 
171 static const u8 W83792D_REG_POINTS[3][4] = {
172  { 0x85, /* SmartFanII: Fan1 temp point 1 */
173  0xE3, /* SmartFanII: Fan1 temp point 2 */
174  0xE4, /* SmartFanII: Fan1 temp point 3 */
175  0xE5 }, /* SmartFanII: Fan1 temp point 4 */
176  { 0x86, /* SmartFanII: Fan2 temp point 1 */
177  0xE6, /* SmartFanII: Fan2 temp point 2 */
178  0xE7, /* SmartFanII: Fan2 temp point 3 */
179  0xE8 }, /* SmartFanII: Fan2 temp point 4 */
180  { 0x96, /* SmartFanII: Fan3 temp point 1 */
181  0xE9, /* SmartFanII: Fan3 temp point 2 */
182  0xEA, /* SmartFanII: Fan3 temp point 3 */
183  0xEB } /* SmartFanII: Fan3 temp point 4 */
184 };
185 
186 static const u8 W83792D_REG_LEVELS[3][4] = {
187  { 0x88, /* (bit3-0) SmartFanII: Fan1 Non-Stop */
188  0x88, /* (bit7-4) SmartFanII: Fan1 Level 1 */
189  0xE0, /* (bit7-4) SmartFanII: Fan1 Level 2 */
190  0xE0 }, /* (bit3-0) SmartFanII: Fan1 Level 3 */
191  { 0x89, /* (bit3-0) SmartFanII: Fan2 Non-Stop */
192  0x89, /* (bit7-4) SmartFanII: Fan2 Level 1 */
193  0xE1, /* (bit7-4) SmartFanII: Fan2 Level 2 */
194  0xE1 }, /* (bit3-0) SmartFanII: Fan2 Level 3 */
195  { 0x98, /* (bit3-0) SmartFanII: Fan3 Non-Stop */
196  0x98, /* (bit7-4) SmartFanII: Fan3 Level 1 */
197  0xE2, /* (bit7-4) SmartFanII: Fan3 Level 2 */
198  0xE2 } /* (bit3-0) SmartFanII: Fan3 Level 3 */
199 };
200 
201 #define W83792D_REG_GPIO_EN 0x1A
202 #define W83792D_REG_CONFIG 0x40
203 #define W83792D_REG_VID_FANDIV 0x47
204 #define W83792D_REG_CHIPID 0x49
205 #define W83792D_REG_WCHIPID 0x58
206 #define W83792D_REG_CHIPMAN 0x4F
207 #define W83792D_REG_PIN 0x4B
208 #define W83792D_REG_I2C_SUBADDR 0x4A
209 
210 #define W83792D_REG_ALARM1 0xA9 /* realtime status register1 */
211 #define W83792D_REG_ALARM2 0xAA /* realtime status register2 */
212 #define W83792D_REG_ALARM3 0xAB /* realtime status register3 */
213 #define W83792D_REG_CHASSIS 0x42 /* Bit 5: Case Open status bit */
214 #define W83792D_REG_CHASSIS_CLR 0x44 /* Bit 7: Case Open CLR_CHS/Reset bit */
215 
216 /* control in0/in1 's limit modifiability */
217 #define W83792D_REG_VID_IN_B 0x17
218 
219 #define W83792D_REG_VBAT 0x5D
220 #define W83792D_REG_I2C_ADDR 0x48
221 
222 /*
223  * Conversions. Rounding and limit checking is only done on the TO_REG
224  * variants. Note that you should be a bit careful with which arguments
225  * these macros are called: arguments may be evaluated more than once.
226  * Fixing this is just not worth it.
227  */
228 #define IN_FROM_REG(nr, val) (((nr) <= 1) ? ((val) * 2) : \
229  ((((nr) == 6) || ((nr) == 7)) ? ((val) * 6) : ((val) * 4)))
230 #define IN_TO_REG(nr, val) (((nr) <= 1) ? ((val) / 2) : \
231  ((((nr) == 6) || ((nr) == 7)) ? ((val) / 6) : ((val) / 4)))
232 
233 static inline u8
234 FAN_TO_REG(long rpm, int div)
235 {
236  if (rpm == 0)
237  return 255;
238  rpm = SENSORS_LIMIT(rpm, 1, 1000000);
239  return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
240 }
241 
242 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \
243  ((val) == 255 ? 0 : \
244  1350000 / ((val) * (div))))
245 
246 /* for temp1 */
247 #define TEMP1_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
248  : (val)) / 1000, 0, 0xff))
249 #define TEMP1_FROM_REG(val) (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
250 /* for temp2 and temp3, because they need additional resolution */
251 #define TEMP_ADD_FROM_REG(val1, val2) \
252  ((((val1) & 0x80 ? (val1)-0x100 \
253  : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
254 #define TEMP_ADD_TO_REG_HIGH(val) \
255  (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
256  : (val)) / 1000, 0, 0xff))
257 #define TEMP_ADD_TO_REG_LOW(val) ((val%1000) ? 0x80 : 0x00)
258 
259 #define DIV_FROM_REG(val) (1 << (val))
260 
261 static inline u8
262 DIV_TO_REG(long val)
263 {
264  int i;
265  val = SENSORS_LIMIT(val, 1, 128) >> 1;
266  for (i = 0; i < 7; i++) {
267  if (val == 0)
268  break;
269  val >>= 1;
270  }
271  return (u8)i;
272 }
273 
274 struct w83792d_data {
275  struct device *hwmon_dev;
276 
277  struct mutex update_lock;
278  char valid; /* !=0 if following fields are valid */
279  unsigned long last_updated; /* In jiffies */
280 
281  /* array of 2 pointers to subclients */
282  struct i2c_client *lm75[2];
283 
284  u8 in[9]; /* Register value */
285  u8 in_max[9]; /* Register value */
286  u8 in_min[9]; /* Register value */
287  u16 low_bits; /* Additional resolution to voltage in6-0 */
288  u8 fan[7]; /* Register value */
289  u8 fan_min[7]; /* Register value */
290  u8 temp1[3]; /* current, over, thyst */
291  u8 temp_add[2][6]; /* Register value */
292  u8 fan_div[7]; /* Register encoding, shifted right */
293  u8 pwm[7]; /*
294  * We only consider the first 3 set of pwm,
295  * although 792 chip has 7 set of pwm.
296  */
297  u8 pwmenable[3];
298  u32 alarms; /* realtime status register encoding,combined */
299  u8 chassis; /* Chassis status */
300  u8 thermal_cruise[3]; /* Smart FanI: Fan1,2,3 target value */
301  u8 tolerance[3]; /* Fan1,2,3 tolerance(Smart Fan I/II) */
302  u8 sf2_points[3][4]; /* Smart FanII: Fan1,2,3 temperature points */
303  u8 sf2_levels[3][4]; /* Smart FanII: Fan1,2,3 duty cycle levels */
304 };
305 
306 static int w83792d_probe(struct i2c_client *client,
307  const struct i2c_device_id *id);
308 static int w83792d_detect(struct i2c_client *client,
309  struct i2c_board_info *info);
310 static int w83792d_remove(struct i2c_client *client);
311 static struct w83792d_data *w83792d_update_device(struct device *dev);
312 
313 #ifdef DEBUG
314 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
315 #endif
316 
317 static void w83792d_init_client(struct i2c_client *client);
318 
319 static const struct i2c_device_id w83792d_id[] = {
320  { "w83792d", 0 },
321  { }
322 };
323 MODULE_DEVICE_TABLE(i2c, w83792d_id);
324 
325 static struct i2c_driver w83792d_driver = {
326  .class = I2C_CLASS_HWMON,
327  .driver = {
328  .name = "w83792d",
329  },
330  .probe = w83792d_probe,
331  .remove = w83792d_remove,
332  .id_table = w83792d_id,
333  .detect = w83792d_detect,
334  .address_list = normal_i2c,
335 };
336 
337 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
338 {
339  /* in7 and in8 do not have low bits, but the formula still works */
340  return (data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03);
341 }
342 
343 /*
344  * The SMBus locks itself. The Winbond W83792D chip has a bank register,
345  * but the driver only accesses registers in bank 0, so we don't have
346  * to switch banks and lock access between switches.
347  */
348 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
349 {
350  return i2c_smbus_read_byte_data(client, reg);
351 }
352 
353 static inline int
354 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
355 {
356  return i2c_smbus_write_byte_data(client, reg, value);
357 }
358 
359 /* following are the sysfs callback functions */
360 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
361  char *buf)
362 {
363  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
364  int nr = sensor_attr->index;
365  struct w83792d_data *data = w83792d_update_device(dev);
366  return sprintf(buf, "%ld\n",
367  IN_FROM_REG(nr, in_count_from_reg(nr, data)));
368 }
369 
370 #define show_in_reg(reg) \
371 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
372  char *buf) \
373 { \
374  struct sensor_device_attribute *sensor_attr \
375  = to_sensor_dev_attr(attr); \
376  int nr = sensor_attr->index; \
377  struct w83792d_data *data = w83792d_update_device(dev); \
378  return sprintf(buf, "%ld\n", \
379  (long)(IN_FROM_REG(nr, data->reg[nr]) * 4)); \
380 }
381 
382 show_in_reg(in_min);
383 show_in_reg(in_max);
384 
385 #define store_in_reg(REG, reg) \
386 static ssize_t store_in_##reg(struct device *dev, \
387  struct device_attribute *attr, \
388  const char *buf, size_t count) \
389 { \
390  struct sensor_device_attribute *sensor_attr \
391  = to_sensor_dev_attr(attr); \
392  int nr = sensor_attr->index; \
393  struct i2c_client *client = to_i2c_client(dev); \
394  struct w83792d_data *data = i2c_get_clientdata(client); \
395  unsigned long val; \
396  int err = kstrtoul(buf, 10, &val); \
397  if (err) \
398  return err; \
399  mutex_lock(&data->update_lock); \
400  data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val) / 4, 0, 255); \
401  w83792d_write_value(client, W83792D_REG_IN_##REG[nr], \
402  data->in_##reg[nr]); \
403  mutex_unlock(&data->update_lock); \
404  \
405  return count; \
406 }
407 store_in_reg(MIN, min);
408 store_in_reg(MAX, max);
409 
410 #define show_fan_reg(reg) \
411 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
412  char *buf) \
413 { \
414  struct sensor_device_attribute *sensor_attr \
415  = to_sensor_dev_attr(attr); \
416  int nr = sensor_attr->index - 1; \
417  struct w83792d_data *data = w83792d_update_device(dev); \
418  return sprintf(buf, "%d\n", \
419  FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
420 }
421 
422 show_fan_reg(fan);
423 show_fan_reg(fan_min);
424 
425 static ssize_t
426 store_fan_min(struct device *dev, struct device_attribute *attr,
427  const char *buf, size_t count)
428 {
429  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
430  int nr = sensor_attr->index - 1;
431  struct i2c_client *client = to_i2c_client(dev);
432  struct w83792d_data *data = i2c_get_clientdata(client);
433  unsigned long val;
434  int err;
435 
436  err = kstrtoul(buf, 10, &val);
437  if (err)
438  return err;
439 
440  mutex_lock(&data->update_lock);
441  data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
442  w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
443  data->fan_min[nr]);
444  mutex_unlock(&data->update_lock);
445 
446  return count;
447 }
448 
449 static ssize_t
450 show_fan_div(struct device *dev, struct device_attribute *attr,
451  char *buf)
452 {
453  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
454  int nr = sensor_attr->index;
455  struct w83792d_data *data = w83792d_update_device(dev);
456  return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
457 }
458 
459 /*
460  * Note: we save and restore the fan minimum here, because its value is
461  * determined in part by the fan divisor. This follows the principle of
462  * least surprise; the user doesn't expect the fan minimum to change just
463  * because the divisor changed.
464  */
465 static ssize_t
466 store_fan_div(struct device *dev, struct device_attribute *attr,
467  const char *buf, size_t count)
468 {
469  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
470  int nr = sensor_attr->index - 1;
471  struct i2c_client *client = to_i2c_client(dev);
472  struct w83792d_data *data = i2c_get_clientdata(client);
473  unsigned long min;
474  /*u8 reg;*/
475  u8 fan_div_reg = 0;
476  u8 tmp_fan_div;
477  unsigned long val;
478  int err;
479 
480  err = kstrtoul(buf, 10, &val);
481  if (err)
482  return err;
483 
484  /* Save fan_min */
485  mutex_lock(&data->update_lock);
486  min = FAN_FROM_REG(data->fan_min[nr],
487  DIV_FROM_REG(data->fan_div[nr]));
488 
489  data->fan_div[nr] = DIV_TO_REG(val);
490 
491  fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
492  fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
493  tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
494  : ((data->fan_div[nr]) & 0x07);
495  w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
496  fan_div_reg | tmp_fan_div);
497 
498  /* Restore fan_min */
499  data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
500  w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
501  mutex_unlock(&data->update_lock);
502 
503  return count;
504 }
505 
506 /* read/write the temperature1, includes measured value and limits */
507 
508 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
509  char *buf)
510 {
511  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
512  int nr = sensor_attr->index;
513  struct w83792d_data *data = w83792d_update_device(dev);
514  return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
515 }
516 
517 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
518  const char *buf, size_t count)
519 {
520  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
521  int nr = sensor_attr->index;
522  struct i2c_client *client = to_i2c_client(dev);
523  struct w83792d_data *data = i2c_get_clientdata(client);
524  long val;
525  int err;
526 
527  err = kstrtol(buf, 10, &val);
528  if (err)
529  return err;
530 
531  mutex_lock(&data->update_lock);
532  data->temp1[nr] = TEMP1_TO_REG(val);
533  w83792d_write_value(client, W83792D_REG_TEMP1[nr],
534  data->temp1[nr]);
535  mutex_unlock(&data->update_lock);
536 
537  return count;
538 }
539 
540 /* read/write the temperature2-3, includes measured value and limits */
541 
542 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
543  char *buf)
544 {
545  struct sensor_device_attribute_2 *sensor_attr
546  = to_sensor_dev_attr_2(attr);
547  int nr = sensor_attr->nr;
548  int index = sensor_attr->index;
549  struct w83792d_data *data = w83792d_update_device(dev);
550  return sprintf(buf, "%ld\n",
551  (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
552  data->temp_add[nr][index+1]));
553 }
554 
555 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
556  const char *buf, size_t count)
557 {
558  struct sensor_device_attribute_2 *sensor_attr
559  = to_sensor_dev_attr_2(attr);
560  int nr = sensor_attr->nr;
561  int index = sensor_attr->index;
562  struct i2c_client *client = to_i2c_client(dev);
563  struct w83792d_data *data = i2c_get_clientdata(client);
564  long val;
565  int err;
566 
567  err = kstrtol(buf, 10, &val);
568  if (err)
569  return err;
570 
571  mutex_lock(&data->update_lock);
572  data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
573  data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
574  w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
575  data->temp_add[nr][index]);
576  w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
577  data->temp_add[nr][index+1]);
578  mutex_unlock(&data->update_lock);
579 
580  return count;
581 }
582 
583 /* get reatime status of all sensors items: voltage, temp, fan */
584 static ssize_t
585 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
586 {
587  struct w83792d_data *data = w83792d_update_device(dev);
588  return sprintf(buf, "%d\n", data->alarms);
589 }
590 
591 static ssize_t show_alarm(struct device *dev,
592  struct device_attribute *attr, char *buf)
593 {
594  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
595  int nr = sensor_attr->index;
596  struct w83792d_data *data = w83792d_update_device(dev);
597  return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
598 }
599 
600 static ssize_t
601 show_pwm(struct device *dev, struct device_attribute *attr,
602  char *buf)
603 {
604  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
605  int nr = sensor_attr->index;
606  struct w83792d_data *data = w83792d_update_device(dev);
607  return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
608 }
609 
610 static ssize_t
611 show_pwmenable(struct device *dev, struct device_attribute *attr,
612  char *buf)
613 {
614  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
615  int nr = sensor_attr->index - 1;
616  struct w83792d_data *data = w83792d_update_device(dev);
617  long pwm_enable_tmp = 1;
618 
619  switch (data->pwmenable[nr]) {
620  case 0:
621  pwm_enable_tmp = 1; /* manual mode */
622  break;
623  case 1:
624  pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
625  break;
626  case 2:
627  pwm_enable_tmp = 2; /* Smart Fan II */
628  break;
629  }
630 
631  return sprintf(buf, "%ld\n", pwm_enable_tmp);
632 }
633 
634 static ssize_t
635 store_pwm(struct device *dev, struct device_attribute *attr,
636  const char *buf, size_t count)
637 {
638  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
639  int nr = sensor_attr->index;
640  struct i2c_client *client = to_i2c_client(dev);
641  struct w83792d_data *data = i2c_get_clientdata(client);
642  unsigned long val;
643  int err;
644 
645  err = kstrtoul(buf, 10, &val);
646  if (err)
647  return err;
648  val = SENSORS_LIMIT(val, 0, 255) >> 4;
649 
650  mutex_lock(&data->update_lock);
651  val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
652  data->pwm[nr] = val;
653  w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
654  mutex_unlock(&data->update_lock);
655 
656  return count;
657 }
658 
659 static ssize_t
660 store_pwmenable(struct device *dev, struct device_attribute *attr,
661  const char *buf, size_t count)
662 {
663  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
664  int nr = sensor_attr->index - 1;
665  struct i2c_client *client = to_i2c_client(dev);
666  struct w83792d_data *data = i2c_get_clientdata(client);
667  u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
668  unsigned long val;
669  int err;
670 
671  err = kstrtoul(buf, 10, &val);
672  if (err)
673  return err;
674 
675  if (val < 1 || val > 3)
676  return -EINVAL;
677 
678  mutex_lock(&data->update_lock);
679  switch (val) {
680  case 1:
681  data->pwmenable[nr] = 0; /* manual mode */
682  break;
683  case 2:
684  data->pwmenable[nr] = 2; /* Smart Fan II */
685  break;
686  case 3:
687  data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
688  break;
689  }
690  cfg1_tmp = data->pwmenable[0];
691  cfg2_tmp = (data->pwmenable[1]) << 2;
692  cfg3_tmp = (data->pwmenable[2]) << 4;
693  cfg4_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG) & 0xc0;
694  fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
695  w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
696  mutex_unlock(&data->update_lock);
697 
698  return count;
699 }
700 
701 static ssize_t
702 show_pwm_mode(struct device *dev, struct device_attribute *attr,
703  char *buf)
704 {
705  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
706  int nr = sensor_attr->index;
707  struct w83792d_data *data = w83792d_update_device(dev);
708  return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
709 }
710 
711 static ssize_t
712 store_pwm_mode(struct device *dev, struct device_attribute *attr,
713  const char *buf, size_t count)
714 {
715  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
716  int nr = sensor_attr->index;
717  struct i2c_client *client = to_i2c_client(dev);
718  struct w83792d_data *data = i2c_get_clientdata(client);
719  unsigned long val;
720  int err;
721 
722  err = kstrtoul(buf, 10, &val);
723  if (err)
724  return err;
725  if (val > 1)
726  return -EINVAL;
727 
728  mutex_lock(&data->update_lock);
729  data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
730  if (val) { /* PWM mode */
731  data->pwm[nr] |= 0x80;
732  } else { /* DC mode */
733  data->pwm[nr] &= 0x7f;
734  }
735  w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
736  mutex_unlock(&data->update_lock);
737 
738  return count;
739 }
740 
741 static ssize_t
742 show_chassis_clear(struct device *dev, struct device_attribute *attr,
743  char *buf)
744 {
745  struct w83792d_data *data = w83792d_update_device(dev);
746  return sprintf(buf, "%d\n", data->chassis);
747 }
748 
749 static ssize_t
750 store_chassis_clear(struct device *dev, struct device_attribute *attr,
751  const char *buf, size_t count)
752 {
753  struct i2c_client *client = to_i2c_client(dev);
754  struct w83792d_data *data = i2c_get_clientdata(client);
755  unsigned long val;
756  u8 reg;
757 
758  if (kstrtoul(buf, 10, &val) || val != 0)
759  return -EINVAL;
760 
761  mutex_lock(&data->update_lock);
762  reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
763  w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
764  data->valid = 0; /* Force cache refresh */
765  mutex_unlock(&data->update_lock);
766 
767  return count;
768 }
769 
770 /* For Smart Fan I / Thermal Cruise */
771 static ssize_t
772 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
773  char *buf)
774 {
775  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
776  int nr = sensor_attr->index;
777  struct w83792d_data *data = w83792d_update_device(dev);
778  return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
779 }
780 
781 static ssize_t
782 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
783  const char *buf, size_t count)
784 {
785  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
786  int nr = sensor_attr->index - 1;
787  struct i2c_client *client = to_i2c_client(dev);
788  struct w83792d_data *data = i2c_get_clientdata(client);
789  u8 target_tmp = 0, target_mask = 0;
790  unsigned long val;
791  int err;
792 
793  err = kstrtoul(buf, 10, &val);
794  if (err)
795  return err;
796 
797  target_tmp = val;
798  target_tmp = target_tmp & 0x7f;
799  mutex_lock(&data->update_lock);
800  target_mask = w83792d_read_value(client,
801  W83792D_REG_THERMAL[nr]) & 0x80;
802  data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
803  w83792d_write_value(client, W83792D_REG_THERMAL[nr],
804  (data->thermal_cruise[nr]) | target_mask);
805  mutex_unlock(&data->update_lock);
806 
807  return count;
808 }
809 
810 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
811 static ssize_t
812 show_tolerance(struct device *dev, struct device_attribute *attr,
813  char *buf)
814 {
815  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
816  int nr = sensor_attr->index;
817  struct w83792d_data *data = w83792d_update_device(dev);
818  return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
819 }
820 
821 static ssize_t
822 store_tolerance(struct device *dev, struct device_attribute *attr,
823  const char *buf, size_t count)
824 {
825  struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
826  int nr = sensor_attr->index - 1;
827  struct i2c_client *client = to_i2c_client(dev);
828  struct w83792d_data *data = i2c_get_clientdata(client);
829  u8 tol_tmp, tol_mask;
830  unsigned long val;
831  int err;
832 
833  err = kstrtoul(buf, 10, &val);
834  if (err)
835  return err;
836 
837  mutex_lock(&data->update_lock);
838  tol_mask = w83792d_read_value(client,
839  W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
840  tol_tmp = SENSORS_LIMIT(val, 0, 15);
841  tol_tmp &= 0x0f;
842  data->tolerance[nr] = tol_tmp;
843  if (nr == 1)
844  tol_tmp <<= 4;
845  w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
846  tol_mask | tol_tmp);
847  mutex_unlock(&data->update_lock);
848 
849  return count;
850 }
851 
852 /* For Smart Fan II */
853 static ssize_t
854 show_sf2_point(struct device *dev, struct device_attribute *attr,
855  char *buf)
856 {
857  struct sensor_device_attribute_2 *sensor_attr
858  = to_sensor_dev_attr_2(attr);
859  int nr = sensor_attr->nr;
860  int index = sensor_attr->index;
861  struct w83792d_data *data = w83792d_update_device(dev);
862  return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
863 }
864 
865 static ssize_t
866 store_sf2_point(struct device *dev, struct device_attribute *attr,
867  const char *buf, size_t count)
868 {
869  struct sensor_device_attribute_2 *sensor_attr
870  = to_sensor_dev_attr_2(attr);
871  int nr = sensor_attr->nr - 1;
872  int index = sensor_attr->index - 1;
873  struct i2c_client *client = to_i2c_client(dev);
874  struct w83792d_data *data = i2c_get_clientdata(client);
875  u8 mask_tmp = 0;
876  unsigned long val;
877  int err;
878 
879  err = kstrtoul(buf, 10, &val);
880  if (err)
881  return err;
882 
883  mutex_lock(&data->update_lock);
884  data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
885  mask_tmp = w83792d_read_value(client,
886  W83792D_REG_POINTS[index][nr]) & 0x80;
887  w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
888  mask_tmp|data->sf2_points[index][nr]);
889  mutex_unlock(&data->update_lock);
890 
891  return count;
892 }
893 
894 static ssize_t
895 show_sf2_level(struct device *dev, struct device_attribute *attr,
896  char *buf)
897 {
898  struct sensor_device_attribute_2 *sensor_attr
899  = to_sensor_dev_attr_2(attr);
900  int nr = sensor_attr->nr;
901  int index = sensor_attr->index;
902  struct w83792d_data *data = w83792d_update_device(dev);
903  return sprintf(buf, "%d\n",
904  (((data->sf2_levels[index-1][nr]) * 100) / 15));
905 }
906 
907 static ssize_t
908 store_sf2_level(struct device *dev, struct device_attribute *attr,
909  const char *buf, size_t count)
910 {
911  struct sensor_device_attribute_2 *sensor_attr
912  = to_sensor_dev_attr_2(attr);
913  int nr = sensor_attr->nr;
914  int index = sensor_attr->index - 1;
915  struct i2c_client *client = to_i2c_client(dev);
916  struct w83792d_data *data = i2c_get_clientdata(client);
917  u8 mask_tmp = 0, level_tmp = 0;
918  unsigned long val;
919  int err;
920 
921  err = kstrtoul(buf, 10, &val);
922  if (err)
923  return err;
924 
925  mutex_lock(&data->update_lock);
926  data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
927  mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
928  & ((nr == 3) ? 0xf0 : 0x0f);
929  if (nr == 3)
930  level_tmp = data->sf2_levels[index][nr];
931  else
932  level_tmp = data->sf2_levels[index][nr] << 4;
933  w83792d_write_value(client, W83792D_REG_LEVELS[index][nr],
934  level_tmp | mask_tmp);
935  mutex_unlock(&data->update_lock);
936 
937  return count;
938 }
939 
940 
941 static int
942 w83792d_detect_subclients(struct i2c_client *new_client)
943 {
944  int i, id, err;
945  int address = new_client->addr;
946  u8 val;
947  struct i2c_adapter *adapter = new_client->adapter;
948  struct w83792d_data *data = i2c_get_clientdata(new_client);
949 
950  id = i2c_adapter_id(adapter);
951  if (force_subclients[0] == id && force_subclients[1] == address) {
952  for (i = 2; i <= 3; i++) {
953  if (force_subclients[i] < 0x48 ||
954  force_subclients[i] > 0x4f) {
955  dev_err(&new_client->dev, "invalid subclient "
956  "address %d; must be 0x48-0x4f\n",
957  force_subclients[i]);
958  err = -ENODEV;
959  goto ERROR_SC_0;
960  }
961  }
962  w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
963  (force_subclients[2] & 0x07) |
964  ((force_subclients[3] & 0x07) << 4));
965  }
966 
967  val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
968  if (!(val & 0x08))
969  data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
970  if (!(val & 0x80)) {
971  if ((data->lm75[0] != NULL) &&
972  ((val & 0x7) == ((val >> 4) & 0x7))) {
973  dev_err(&new_client->dev, "duplicate addresses 0x%x, "
974  "use force_subclient\n", data->lm75[0]->addr);
975  err = -ENODEV;
976  goto ERROR_SC_1;
977  }
978  data->lm75[1] = i2c_new_dummy(adapter,
979  0x48 + ((val >> 4) & 0x7));
980  }
981 
982  return 0;
983 
984 /* Undo inits in case of errors */
985 
986 ERROR_SC_1:
987  if (data->lm75[0] != NULL)
988  i2c_unregister_device(data->lm75[0]);
989 ERROR_SC_0:
990  return err;
991 }
992 
993 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
994 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
995 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
996 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
997 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
998 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
999 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
1000 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
1001 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
1002 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
1003  show_in_min, store_in_min, 0);
1004 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
1005  show_in_min, store_in_min, 1);
1006 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
1007  show_in_min, store_in_min, 2);
1008 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
1009  show_in_min, store_in_min, 3);
1010 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
1011  show_in_min, store_in_min, 4);
1012 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
1013  show_in_min, store_in_min, 5);
1014 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
1015  show_in_min, store_in_min, 6);
1016 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
1017  show_in_min, store_in_min, 7);
1018 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
1019  show_in_min, store_in_min, 8);
1020 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
1021  show_in_max, store_in_max, 0);
1022 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
1023  show_in_max, store_in_max, 1);
1024 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
1025  show_in_max, store_in_max, 2);
1026 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
1027  show_in_max, store_in_max, 3);
1028 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
1029  show_in_max, store_in_max, 4);
1030 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
1031  show_in_max, store_in_max, 5);
1032 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1033  show_in_max, store_in_max, 6);
1034 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1035  show_in_max, store_in_max, 7);
1036 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1037  show_in_max, store_in_max, 8);
1038 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1039 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1040 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1041 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1042  show_temp1, store_temp1, 0, 1);
1043 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1044  store_temp23, 0, 2);
1045 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1046  store_temp23, 1, 2);
1047 static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1048  show_temp1, store_temp1, 0, 2);
1049 static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1050  show_temp23, store_temp23, 0, 4);
1051 static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1052  show_temp23, store_temp23, 1, 4);
1053 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1054 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1055 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1056 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1057 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1058 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1059 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1060 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1061 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1062 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1063 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1064 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1065 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1066 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1067 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1068 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1069 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1070 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1071 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1072 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1073 static DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1074  show_chassis_clear, store_chassis_clear);
1075 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1076 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1077 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1078 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1079  show_pwmenable, store_pwmenable, 1);
1080 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1081  show_pwmenable, store_pwmenable, 2);
1082 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1083  show_pwmenable, store_pwmenable, 3);
1084 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1085  show_pwm_mode, store_pwm_mode, 0);
1086 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1087  show_pwm_mode, store_pwm_mode, 1);
1088 static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1089  show_pwm_mode, store_pwm_mode, 2);
1090 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1091  show_tolerance, store_tolerance, 1);
1092 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1093  show_tolerance, store_tolerance, 2);
1094 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1095  show_tolerance, store_tolerance, 3);
1096 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1097  show_thermal_cruise, store_thermal_cruise, 1);
1098 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1099  show_thermal_cruise, store_thermal_cruise, 2);
1100 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1101  show_thermal_cruise, store_thermal_cruise, 3);
1102 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1103  show_sf2_point, store_sf2_point, 1, 1);
1104 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1105  show_sf2_point, store_sf2_point, 2, 1);
1106 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1107  show_sf2_point, store_sf2_point, 3, 1);
1108 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1109  show_sf2_point, store_sf2_point, 4, 1);
1110 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1111  show_sf2_point, store_sf2_point, 1, 2);
1112 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1113  show_sf2_point, store_sf2_point, 2, 2);
1114 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1115  show_sf2_point, store_sf2_point, 3, 2);
1116 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1117  show_sf2_point, store_sf2_point, 4, 2);
1118 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1119  show_sf2_point, store_sf2_point, 1, 3);
1120 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1121  show_sf2_point, store_sf2_point, 2, 3);
1122 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1123  show_sf2_point, store_sf2_point, 3, 3);
1124 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1125  show_sf2_point, store_sf2_point, 4, 3);
1126 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1127  show_sf2_level, store_sf2_level, 1, 1);
1128 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1129  show_sf2_level, store_sf2_level, 2, 1);
1130 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1131  show_sf2_level, store_sf2_level, 3, 1);
1132 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1133  show_sf2_level, store_sf2_level, 1, 2);
1134 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1135  show_sf2_level, store_sf2_level, 2, 2);
1136 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1137  show_sf2_level, store_sf2_level, 3, 2);
1138 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1139  show_sf2_level, store_sf2_level, 1, 3);
1140 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1141  show_sf2_level, store_sf2_level, 2, 3);
1142 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1143  show_sf2_level, store_sf2_level, 3, 3);
1144 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1145 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1146 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1147 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1148 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1149 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1150 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1151 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1152  show_fan_min, store_fan_min, 1);
1153 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1154  show_fan_min, store_fan_min, 2);
1155 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1156  show_fan_min, store_fan_min, 3);
1157 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1158  show_fan_min, store_fan_min, 4);
1159 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1160  show_fan_min, store_fan_min, 5);
1161 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1162  show_fan_min, store_fan_min, 6);
1163 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1164  show_fan_min, store_fan_min, 7);
1165 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1166  show_fan_div, store_fan_div, 1);
1167 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1168  show_fan_div, store_fan_div, 2);
1169 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1170  show_fan_div, store_fan_div, 3);
1171 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1172  show_fan_div, store_fan_div, 4);
1173 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1174  show_fan_div, store_fan_div, 5);
1175 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1176  show_fan_div, store_fan_div, 6);
1177 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1178  show_fan_div, store_fan_div, 7);
1179 
1180 static struct attribute *w83792d_attributes_fan[4][5] = {
1181  {
1182  &sensor_dev_attr_fan4_input.dev_attr.attr,
1183  &sensor_dev_attr_fan4_min.dev_attr.attr,
1184  &sensor_dev_attr_fan4_div.dev_attr.attr,
1185  &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1186  NULL
1187  }, {
1188  &sensor_dev_attr_fan5_input.dev_attr.attr,
1189  &sensor_dev_attr_fan5_min.dev_attr.attr,
1190  &sensor_dev_attr_fan5_div.dev_attr.attr,
1191  &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1192  NULL
1193  }, {
1194  &sensor_dev_attr_fan6_input.dev_attr.attr,
1195  &sensor_dev_attr_fan6_min.dev_attr.attr,
1196  &sensor_dev_attr_fan6_div.dev_attr.attr,
1197  &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1198  NULL
1199  }, {
1200  &sensor_dev_attr_fan7_input.dev_attr.attr,
1201  &sensor_dev_attr_fan7_min.dev_attr.attr,
1202  &sensor_dev_attr_fan7_div.dev_attr.attr,
1203  &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1204  NULL
1205  }
1206 };
1207 
1208 static const struct attribute_group w83792d_group_fan[4] = {
1209  { .attrs = w83792d_attributes_fan[0] },
1210  { .attrs = w83792d_attributes_fan[1] },
1211  { .attrs = w83792d_attributes_fan[2] },
1212  { .attrs = w83792d_attributes_fan[3] },
1213 };
1214 
1215 static struct attribute *w83792d_attributes[] = {
1216  &sensor_dev_attr_in0_input.dev_attr.attr,
1217  &sensor_dev_attr_in0_max.dev_attr.attr,
1218  &sensor_dev_attr_in0_min.dev_attr.attr,
1219  &sensor_dev_attr_in1_input.dev_attr.attr,
1220  &sensor_dev_attr_in1_max.dev_attr.attr,
1221  &sensor_dev_attr_in1_min.dev_attr.attr,
1222  &sensor_dev_attr_in2_input.dev_attr.attr,
1223  &sensor_dev_attr_in2_max.dev_attr.attr,
1224  &sensor_dev_attr_in2_min.dev_attr.attr,
1225  &sensor_dev_attr_in3_input.dev_attr.attr,
1226  &sensor_dev_attr_in3_max.dev_attr.attr,
1227  &sensor_dev_attr_in3_min.dev_attr.attr,
1228  &sensor_dev_attr_in4_input.dev_attr.attr,
1229  &sensor_dev_attr_in4_max.dev_attr.attr,
1230  &sensor_dev_attr_in4_min.dev_attr.attr,
1231  &sensor_dev_attr_in5_input.dev_attr.attr,
1232  &sensor_dev_attr_in5_max.dev_attr.attr,
1233  &sensor_dev_attr_in5_min.dev_attr.attr,
1234  &sensor_dev_attr_in6_input.dev_attr.attr,
1235  &sensor_dev_attr_in6_max.dev_attr.attr,
1236  &sensor_dev_attr_in6_min.dev_attr.attr,
1237  &sensor_dev_attr_in7_input.dev_attr.attr,
1238  &sensor_dev_attr_in7_max.dev_attr.attr,
1239  &sensor_dev_attr_in7_min.dev_attr.attr,
1240  &sensor_dev_attr_in8_input.dev_attr.attr,
1241  &sensor_dev_attr_in8_max.dev_attr.attr,
1242  &sensor_dev_attr_in8_min.dev_attr.attr,
1243  &sensor_dev_attr_in0_alarm.dev_attr.attr,
1244  &sensor_dev_attr_in1_alarm.dev_attr.attr,
1245  &sensor_dev_attr_in2_alarm.dev_attr.attr,
1246  &sensor_dev_attr_in3_alarm.dev_attr.attr,
1247  &sensor_dev_attr_in4_alarm.dev_attr.attr,
1248  &sensor_dev_attr_in5_alarm.dev_attr.attr,
1249  &sensor_dev_attr_in6_alarm.dev_attr.attr,
1250  &sensor_dev_attr_in7_alarm.dev_attr.attr,
1251  &sensor_dev_attr_in8_alarm.dev_attr.attr,
1252  &sensor_dev_attr_temp1_input.dev_attr.attr,
1253  &sensor_dev_attr_temp1_max.dev_attr.attr,
1254  &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1255  &sensor_dev_attr_temp2_input.dev_attr.attr,
1256  &sensor_dev_attr_temp2_max.dev_attr.attr,
1257  &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1258  &sensor_dev_attr_temp3_input.dev_attr.attr,
1259  &sensor_dev_attr_temp3_max.dev_attr.attr,
1260  &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1261  &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1262  &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1263  &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1264  &sensor_dev_attr_pwm1.dev_attr.attr,
1265  &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1266  &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1267  &sensor_dev_attr_pwm2.dev_attr.attr,
1268  &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1269  &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1270  &sensor_dev_attr_pwm3.dev_attr.attr,
1271  &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1272  &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1273  &dev_attr_alarms.attr,
1274  &dev_attr_intrusion0_alarm.attr,
1275  &sensor_dev_attr_tolerance1.dev_attr.attr,
1276  &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1277  &sensor_dev_attr_tolerance2.dev_attr.attr,
1278  &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1279  &sensor_dev_attr_tolerance3.dev_attr.attr,
1280  &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1281  &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1282  &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1283  &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1284  &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1285  &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1286  &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1287  &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1288  &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1289  &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1290  &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1291  &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1292  &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1293  &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1294  &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1295  &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1296  &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1297  &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1298  &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1299  &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1300  &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1301  &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1302  &sensor_dev_attr_fan1_input.dev_attr.attr,
1303  &sensor_dev_attr_fan1_min.dev_attr.attr,
1304  &sensor_dev_attr_fan1_div.dev_attr.attr,
1305  &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1306  &sensor_dev_attr_fan2_input.dev_attr.attr,
1307  &sensor_dev_attr_fan2_min.dev_attr.attr,
1308  &sensor_dev_attr_fan2_div.dev_attr.attr,
1309  &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1310  &sensor_dev_attr_fan3_input.dev_attr.attr,
1311  &sensor_dev_attr_fan3_min.dev_attr.attr,
1312  &sensor_dev_attr_fan3_div.dev_attr.attr,
1313  &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1314  NULL
1315 };
1316 
1317 static const struct attribute_group w83792d_group = {
1318  .attrs = w83792d_attributes,
1319 };
1320 
1321 /* Return 0 if detection is successful, -ENODEV otherwise */
1322 static int
1323 w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
1324 {
1325  struct i2c_adapter *adapter = client->adapter;
1326  int val1, val2;
1327  unsigned short address = client->addr;
1328 
1329  if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1330  return -ENODEV;
1331 
1332  if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
1333  return -ENODEV;
1334 
1335  val1 = w83792d_read_value(client, W83792D_REG_BANK);
1336  val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1337  /* Check for Winbond ID if in bank 0 */
1338  if (!(val1 & 0x07)) { /* is Bank0 */
1339  if ((!(val1 & 0x80) && val2 != 0xa3) ||
1340  ((val1 & 0x80) && val2 != 0x5c))
1341  return -ENODEV;
1342  }
1343  /*
1344  * If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1345  * should match
1346  */
1347  if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
1348  return -ENODEV;
1349 
1350  /* Put it now into bank 0 and Vendor ID High Byte */
1351  w83792d_write_value(client,
1352  W83792D_REG_BANK,
1353  (w83792d_read_value(client,
1354  W83792D_REG_BANK) & 0x78) | 0x80);
1355 
1356  /* Determine the chip type. */
1357  val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1358  val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1359  if (val1 != 0x7a || val2 != 0x5c)
1360  return -ENODEV;
1361 
1362  strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
1363 
1364  return 0;
1365 }
1366 
1367 static int
1368 w83792d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1369 {
1370  struct w83792d_data *data;
1371  struct device *dev = &client->dev;
1372  int i, val1, err;
1373 
1374  data = devm_kzalloc(dev, sizeof(struct w83792d_data), GFP_KERNEL);
1375  if (!data)
1376  return -ENOMEM;
1377 
1378  i2c_set_clientdata(client, data);
1379  data->valid = 0;
1380  mutex_init(&data->update_lock);
1381 
1382  err = w83792d_detect_subclients(client);
1383  if (err)
1384  return err;
1385 
1386  /* Initialize the chip */
1387  w83792d_init_client(client);
1388 
1389  /* A few vars need to be filled upon startup */
1390  for (i = 0; i < 7; i++) {
1391  data->fan_min[i] = w83792d_read_value(client,
1392  W83792D_REG_FAN_MIN[i]);
1393  }
1394 
1395  /* Register sysfs hooks */
1396  err = sysfs_create_group(&dev->kobj, &w83792d_group);
1397  if (err)
1398  goto exit_i2c_unregister;
1399 
1400  /*
1401  * Read GPIO enable register to check if pins for fan 4,5 are used as
1402  * GPIO
1403  */
1404  val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1405 
1406  if (!(val1 & 0x40)) {
1407  err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[0]);
1408  if (err)
1409  goto exit_remove_files;
1410  }
1411 
1412  if (!(val1 & 0x20)) {
1413  err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[1]);
1414  if (err)
1415  goto exit_remove_files;
1416  }
1417 
1418  val1 = w83792d_read_value(client, W83792D_REG_PIN);
1419  if (val1 & 0x40) {
1420  err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[2]);
1421  if (err)
1422  goto exit_remove_files;
1423  }
1424 
1425  if (val1 & 0x04) {
1426  err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[3]);
1427  if (err)
1428  goto exit_remove_files;
1429  }
1430 
1431  data->hwmon_dev = hwmon_device_register(dev);
1432  if (IS_ERR(data->hwmon_dev)) {
1433  err = PTR_ERR(data->hwmon_dev);
1434  goto exit_remove_files;
1435  }
1436 
1437  return 0;
1438 
1439 exit_remove_files:
1440  sysfs_remove_group(&dev->kobj, &w83792d_group);
1441  for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1442  sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1443 exit_i2c_unregister:
1444  if (data->lm75[0] != NULL)
1445  i2c_unregister_device(data->lm75[0]);
1446  if (data->lm75[1] != NULL)
1447  i2c_unregister_device(data->lm75[1]);
1448  return err;
1449 }
1450 
1451 static int
1452 w83792d_remove(struct i2c_client *client)
1453 {
1454  struct w83792d_data *data = i2c_get_clientdata(client);
1455  int i;
1456 
1457  hwmon_device_unregister(data->hwmon_dev);
1458  sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1459  for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1460  sysfs_remove_group(&client->dev.kobj,
1461  &w83792d_group_fan[i]);
1462 
1463  if (data->lm75[0] != NULL)
1464  i2c_unregister_device(data->lm75[0]);
1465  if (data->lm75[1] != NULL)
1466  i2c_unregister_device(data->lm75[1]);
1467 
1468  return 0;
1469 }
1470 
1471 static void
1472 w83792d_init_client(struct i2c_client *client)
1473 {
1474  u8 temp2_cfg, temp3_cfg, vid_in_b;
1475 
1476  if (init)
1477  w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1478 
1479  /*
1480  * Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1481  * W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1482  * vin0/vin1 can be modified by user;
1483  * W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1484  * vin0/vin1 auto-updated, can NOT be modified by user.
1485  */
1486  vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1487  w83792d_write_value(client, W83792D_REG_VID_IN_B,
1488  vid_in_b & 0xbf);
1489 
1490  temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1491  temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1492  w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1493  temp2_cfg & 0xe6);
1494  w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1495  temp3_cfg & 0xe6);
1496 
1497  /* Start monitoring */
1498  w83792d_write_value(client, W83792D_REG_CONFIG,
1499  (w83792d_read_value(client,
1500  W83792D_REG_CONFIG) & 0xf7)
1501  | 0x01);
1502 }
1503 
1504 static struct w83792d_data *w83792d_update_device(struct device *dev)
1505 {
1506  struct i2c_client *client = to_i2c_client(dev);
1507  struct w83792d_data *data = i2c_get_clientdata(client);
1508  int i, j;
1509  u8 reg_array_tmp[4], reg_tmp;
1510 
1511  mutex_lock(&data->update_lock);
1512 
1513  if (time_after
1514  (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1515  || time_before(jiffies, data->last_updated) || !data->valid) {
1516  dev_dbg(dev, "Starting device update\n");
1517 
1518  /* Update the voltages measured value and limits */
1519  for (i = 0; i < 9; i++) {
1520  data->in[i] = w83792d_read_value(client,
1521  W83792D_REG_IN[i]);
1522  data->in_max[i] = w83792d_read_value(client,
1523  W83792D_REG_IN_MAX[i]);
1524  data->in_min[i] = w83792d_read_value(client,
1525  W83792D_REG_IN_MIN[i]);
1526  }
1527  data->low_bits = w83792d_read_value(client,
1528  W83792D_REG_LOW_BITS1) +
1529  (w83792d_read_value(client,
1530  W83792D_REG_LOW_BITS2) << 8);
1531  for (i = 0; i < 7; i++) {
1532  /* Update the Fan measured value and limits */
1533  data->fan[i] = w83792d_read_value(client,
1534  W83792D_REG_FAN[i]);
1535  data->fan_min[i] = w83792d_read_value(client,
1536  W83792D_REG_FAN_MIN[i]);
1537  /* Update the PWM/DC Value and PWM/DC flag */
1538  data->pwm[i] = w83792d_read_value(client,
1539  W83792D_REG_PWM[i]);
1540  }
1541 
1542  reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1543  data->pwmenable[0] = reg_tmp & 0x03;
1544  data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1545  data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1546 
1547  for (i = 0; i < 3; i++) {
1548  data->temp1[i] = w83792d_read_value(client,
1549  W83792D_REG_TEMP1[i]);
1550  }
1551  for (i = 0; i < 2; i++) {
1552  for (j = 0; j < 6; j++) {
1553  data->temp_add[i][j] = w83792d_read_value(
1554  client, W83792D_REG_TEMP_ADD[i][j]);
1555  }
1556  }
1557 
1558  /* Update the Fan Divisor */
1559  for (i = 0; i < 4; i++) {
1560  reg_array_tmp[i] = w83792d_read_value(client,
1561  W83792D_REG_FAN_DIV[i]);
1562  }
1563  data->fan_div[0] = reg_array_tmp[0] & 0x07;
1564  data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1565  data->fan_div[2] = reg_array_tmp[1] & 0x07;
1566  data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1567  data->fan_div[4] = reg_array_tmp[2] & 0x07;
1568  data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1569  data->fan_div[6] = reg_array_tmp[3] & 0x07;
1570 
1571  /* Update the realtime status */
1572  data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1573  (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1574  (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1575 
1576  /* Update CaseOpen status and it's CLR_CHS. */
1577  data->chassis = (w83792d_read_value(client,
1578  W83792D_REG_CHASSIS) >> 5) & 0x01;
1579 
1580  /* Update Thermal Cruise/Smart Fan I target value */
1581  for (i = 0; i < 3; i++) {
1582  data->thermal_cruise[i] =
1583  w83792d_read_value(client,
1584  W83792D_REG_THERMAL[i]) & 0x7f;
1585  }
1586 
1587  /* Update Smart Fan I/II tolerance */
1588  reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1589  data->tolerance[0] = reg_tmp & 0x0f;
1590  data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1591  data->tolerance[2] = w83792d_read_value(client,
1592  W83792D_REG_TOLERANCE[2]) & 0x0f;
1593 
1594  /* Update Smart Fan II temperature points */
1595  for (i = 0; i < 3; i++) {
1596  for (j = 0; j < 4; j++) {
1597  data->sf2_points[i][j]
1598  = w83792d_read_value(client,
1599  W83792D_REG_POINTS[i][j]) & 0x7f;
1600  }
1601  }
1602 
1603  /* Update Smart Fan II duty cycle levels */
1604  for (i = 0; i < 3; i++) {
1605  reg_tmp = w83792d_read_value(client,
1606  W83792D_REG_LEVELS[i][0]);
1607  data->sf2_levels[i][0] = reg_tmp & 0x0f;
1608  data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1609  reg_tmp = w83792d_read_value(client,
1610  W83792D_REG_LEVELS[i][2]);
1611  data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1612  data->sf2_levels[i][3] = reg_tmp & 0x0f;
1613  }
1614 
1615  data->last_updated = jiffies;
1616  data->valid = 1;
1617  }
1618 
1619  mutex_unlock(&data->update_lock);
1620 
1621 #ifdef DEBUG
1622  w83792d_print_debug(data, dev);
1623 #endif
1624 
1625  return data;
1626 }
1627 
1628 #ifdef DEBUG
1629 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1630 {
1631  int i = 0, j = 0;
1632  dev_dbg(dev, "==========The following is the debug message...========\n");
1633  dev_dbg(dev, "9 set of Voltages: =====>\n");
1634  for (i = 0; i < 9; i++) {
1635  dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1636  dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1637  dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1638  }
1639  dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1640  dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1641  dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1642  for (i = 0; i < 7; i++) {
1643  dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1644  dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1645  dev_dbg(dev, "pwm[%d] is: 0x%x\n", i, data->pwm[i]);
1646  }
1647  dev_dbg(dev, "3 set of Temperatures: =====>\n");
1648  for (i = 0; i < 3; i++)
1649  dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1650 
1651  for (i = 0; i < 2; i++) {
1652  for (j = 0; j < 6; j++) {
1653  dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1654  data->temp_add[i][j]);
1655  }
1656  }
1657 
1658  for (i = 0; i < 7; i++)
1659  dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1660 
1661  dev_dbg(dev, "==========End of the debug message...================\n");
1662  dev_dbg(dev, "\n");
1663 }
1664 #endif
1665 
1666 module_i2c_driver(w83792d_driver);
1667 
1668 MODULE_AUTHOR("Chunhao Huang @ Winbond <[email protected]>");
1669 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1670 MODULE_LICENSE("GPL");
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