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kswapd should only wait on IO if there is IO
[linux-2.6/mini2440.git] / drivers / hwmon / w83792d.c
blob007449d3e16ee4d5804a2ccf70759a56e8c4dcf1
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 <DZShen@Winbond.com.tw>,
6 Rudolf Marek <r.marek@assembler.cz>
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
48 /* Addresses to scan */
49 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
50
51 /* Insmod parameters */
52 I2C_CLIENT_INSMOD_1(w83792d);
53 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
54 "{bus, clientaddr, subclientaddr1, subclientaddr2}");
55
56 static int init;
57 module_param(init, bool, 0);
58 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
59
60 /* The W83792D registers */
61 static const u8 W83792D_REG_IN[9] = {
62 0x20, /* Vcore A in DataSheet */
63 0x21, /* Vcore B in DataSheet */
64 0x22, /* VIN0 in DataSheet */
65 0x23, /* VIN1 in DataSheet */
66 0x24, /* VIN2 in DataSheet */
67 0x25, /* VIN3 in DataSheet */
68 0x26, /* 5VCC in DataSheet */
69 0xB0, /* 5VSB in DataSheet */
70 0xB1 /* VBAT in DataSheet */
71 };
72 #define W83792D_REG_LOW_BITS1 0x3E /* Low Bits I in DataSheet */
73 #define W83792D_REG_LOW_BITS2 0x3F /* Low Bits II in DataSheet */
74 static const u8 W83792D_REG_IN_MAX[9] = {
75 0x2B, /* Vcore A High Limit in DataSheet */
76 0x2D, /* Vcore B High Limit in DataSheet */
77 0x2F, /* VIN0 High Limit in DataSheet */
78 0x31, /* VIN1 High Limit in DataSheet */
79 0x33, /* VIN2 High Limit in DataSheet */
80 0x35, /* VIN3 High Limit in DataSheet */
81 0x37, /* 5VCC High Limit in DataSheet */
82 0xB4, /* 5VSB High Limit in DataSheet */
83 0xB6 /* VBAT High Limit in DataSheet */
84 };
85 static const u8 W83792D_REG_IN_MIN[9] = {
86 0x2C, /* Vcore A Low Limit in DataSheet */
87 0x2E, /* Vcore B Low Limit in DataSheet */
88 0x30, /* VIN0 Low Limit in DataSheet */
89 0x32, /* VIN1 Low Limit in DataSheet */
90 0x34, /* VIN2 Low Limit in DataSheet */
91 0x36, /* VIN3 Low Limit in DataSheet */
92 0x38, /* 5VCC Low Limit in DataSheet */
93 0xB5, /* 5VSB Low Limit in DataSheet */
94 0xB7 /* VBAT Low Limit in DataSheet */
95 };
96 static const u8 W83792D_REG_FAN[7] = {
97 0x28, /* FAN 1 Count in DataSheet */
98 0x29, /* FAN 2 Count in DataSheet */
99 0x2A, /* FAN 3 Count in DataSheet */
100 0xB8, /* FAN 4 Count in DataSheet */
101 0xB9, /* FAN 5 Count in DataSheet */
102 0xBA, /* FAN 6 Count in DataSheet */
103 0xBE /* FAN 7 Count in DataSheet */
104 };
105 static const u8 W83792D_REG_FAN_MIN[7] = {
106 0x3B, /* FAN 1 Count Low Limit in DataSheet */
107 0x3C, /* FAN 2 Count Low Limit in DataSheet */
108 0x3D, /* FAN 3 Count Low Limit in DataSheet */
109 0xBB, /* FAN 4 Count Low Limit in DataSheet */
110 0xBC, /* FAN 5 Count Low Limit in DataSheet */
111 0xBD, /* FAN 6 Count Low Limit in DataSheet */
112 0xBF /* FAN 7 Count Low Limit in DataSheet */
113 };
114 #define W83792D_REG_FAN_CFG 0x84 /* FAN Configuration in DataSheet */
115 static const u8 W83792D_REG_FAN_DIV[4] = {
116 0x47, /* contains FAN2 and FAN1 Divisor */
117 0x5B, /* contains FAN4 and FAN3 Divisor */
118 0x5C, /* contains FAN6 and FAN5 Divisor */
119 0x9E /* contains FAN7 Divisor. */
120 };
121 static const u8 W83792D_REG_PWM[7] = {
122 0x81, /* FAN 1 Duty Cycle, be used to control */
123 0x83, /* FAN 2 Duty Cycle, be used to control */
124 0x94, /* FAN 3 Duty Cycle, be used to control */
125 0xA3, /* FAN 4 Duty Cycle, be used to control */
126 0xA4, /* FAN 5 Duty Cycle, be used to control */
127 0xA5, /* FAN 6 Duty Cycle, be used to control */
128 0xA6 /* FAN 7 Duty Cycle, be used to control */
129 };
130 #define W83792D_REG_BANK 0x4E
131 #define W83792D_REG_TEMP2_CONFIG 0xC2
132 #define W83792D_REG_TEMP3_CONFIG 0xCA
133
134 static const u8 W83792D_REG_TEMP1[3] = {
135 0x27, /* TEMP 1 in DataSheet */
136 0x39, /* TEMP 1 Over in DataSheet */
137 0x3A, /* TEMP 1 Hyst in DataSheet */
138 };
139
140 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
141 { 0xC0, /* TEMP 2 in DataSheet */
142 0xC1, /* TEMP 2(0.5 deg) in DataSheet */
143 0xC5, /* TEMP 2 Over High part in DataSheet */
144 0xC6, /* TEMP 2 Over Low part in DataSheet */
145 0xC3, /* TEMP 2 Thyst High part in DataSheet */
146 0xC4 }, /* TEMP 2 Thyst Low part in DataSheet */
147 { 0xC8, /* TEMP 3 in DataSheet */
148 0xC9, /* TEMP 3(0.5 deg) in DataSheet */
149 0xCD, /* TEMP 3 Over High part in DataSheet */
150 0xCE, /* TEMP 3 Over Low part in DataSheet */
151 0xCB, /* TEMP 3 Thyst High part in DataSheet */
152 0xCC } /* TEMP 3 Thyst Low part in DataSheet */
153 };
154
155 static const u8 W83792D_REG_THERMAL[3] = {
156 0x85, /* SmartFanI: Fan1 target value */
157 0x86, /* SmartFanI: Fan2 target value */
158 0x96 /* SmartFanI: Fan3 target value */
159 };
160
161 static const u8 W83792D_REG_TOLERANCE[3] = {
162 0x87, /* (bit3-0)SmartFan Fan1 tolerance */
163 0x87, /* (bit7-4)SmartFan Fan2 tolerance */
164 0x97 /* (bit3-0)SmartFan Fan3 tolerance */
165 };
166
167 static const u8 W83792D_REG_POINTS[3][4] = {
168 { 0x85, /* SmartFanII: Fan1 temp point 1 */
169 0xE3, /* SmartFanII: Fan1 temp point 2 */
170 0xE4, /* SmartFanII: Fan1 temp point 3 */
171 0xE5 }, /* SmartFanII: Fan1 temp point 4 */
172 { 0x86, /* SmartFanII: Fan2 temp point 1 */
173 0xE6, /* SmartFanII: Fan2 temp point 2 */
174 0xE7, /* SmartFanII: Fan2 temp point 3 */
175 0xE8 }, /* SmartFanII: Fan2 temp point 4 */
176 { 0x96, /* SmartFanII: Fan3 temp point 1 */
177 0xE9, /* SmartFanII: Fan3 temp point 2 */
178 0xEA, /* SmartFanII: Fan3 temp point 3 */
179 0xEB } /* SmartFanII: Fan3 temp point 4 */
180 };
181
182 static const u8 W83792D_REG_LEVELS[3][4] = {
183 { 0x88, /* (bit3-0) SmartFanII: Fan1 Non-Stop */
184 0x88, /* (bit7-4) SmartFanII: Fan1 Level 1 */
185 0xE0, /* (bit7-4) SmartFanII: Fan1 Level 2 */
186 0xE0 }, /* (bit3-0) SmartFanII: Fan1 Level 3 */
187 { 0x89, /* (bit3-0) SmartFanII: Fan2 Non-Stop */
188 0x89, /* (bit7-4) SmartFanII: Fan2 Level 1 */
189 0xE1, /* (bit7-4) SmartFanII: Fan2 Level 2 */
190 0xE1 }, /* (bit3-0) SmartFanII: Fan2 Level 3 */
191 { 0x98, /* (bit3-0) SmartFanII: Fan3 Non-Stop */
192 0x98, /* (bit7-4) SmartFanII: Fan3 Level 1 */
193 0xE2, /* (bit7-4) SmartFanII: Fan3 Level 2 */
194 0xE2 } /* (bit3-0) SmartFanII: Fan3 Level 3 */
195 };
196
197 #define W83792D_REG_GPIO_EN 0x1A
198 #define W83792D_REG_CONFIG 0x40
199 #define W83792D_REG_VID_FANDIV 0x47
200 #define W83792D_REG_CHIPID 0x49
201 #define W83792D_REG_WCHIPID 0x58
202 #define W83792D_REG_CHIPMAN 0x4F
203 #define W83792D_REG_PIN 0x4B
204 #define W83792D_REG_I2C_SUBADDR 0x4A
205
206 #define W83792D_REG_ALARM1 0xA9 /* realtime status register1 */
207 #define W83792D_REG_ALARM2 0xAA /* realtime status register2 */
208 #define W83792D_REG_ALARM3 0xAB /* realtime status register3 */
209 #define W83792D_REG_CHASSIS 0x42 /* Bit 5: Case Open status bit */
210 #define W83792D_REG_CHASSIS_CLR 0x44 /* Bit 7: Case Open CLR_CHS/Reset bit */
211
212 /* control in0/in1 's limit modifiability */
213 #define W83792D_REG_VID_IN_B 0x17
214
215 #define W83792D_REG_VBAT 0x5D
216 #define W83792D_REG_I2C_ADDR 0x48
217
218 /* Conversions. Rounding and limit checking is only done on the TO_REG
219 variants. Note that you should be a bit careful with which arguments
220 these macros are called: arguments may be evaluated more than once.
221 Fixing this is just not worth it. */
222 #define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
223 ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
224 #define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
225 ((((nr)==6)||((nr)==7))?(val/6):(val/4)))
226
227 static inline u8
228 FAN_TO_REG(long rpm, int div)
229 {
230 if (rpm == 0)
231 return 255;
232 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
233 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
234 }
235
236 #define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \
237 ((val) == 255 ? 0 : \
238 1350000 / ((val) * (div))))
239
240 /* for temp1 */
241 #define TEMP1_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
242 : (val)) / 1000, 0, 0xff))
243 #define TEMP1_FROM_REG(val) (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
244 /* for temp2 and temp3, because they need addtional resolution */
245 #define TEMP_ADD_FROM_REG(val1, val2) \
246 ((((val1) & 0x80 ? (val1)-0x100 \
247 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
248 #define TEMP_ADD_TO_REG_HIGH(val) \
249 (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
250 : (val)) / 1000, 0, 0xff))
251 #define TEMP_ADD_TO_REG_LOW(val) ((val%1000) ? 0x80 : 0x00)
252
253 #define DIV_FROM_REG(val) (1 << (val))
254
255 static inline u8
256 DIV_TO_REG(long val)
257 {
258 int i;
259 val = SENSORS_LIMIT(val, 1, 128) >> 1;
260 for (i = 0; i < 7; i++) {
261 if (val == 0)
262 break;
263 val >>= 1;
264 }
265 return ((u8) i);
266 }
267
268 struct w83792d_data {
269 struct i2c_client client;
270 struct device *hwmon_dev;
271 enum chips type;
272
273 struct mutex update_lock;
274 char valid; /* !=0 if following fields are valid */
275 unsigned long last_updated; /* In jiffies */
276
277 /* array of 2 pointers to subclients */
278 struct i2c_client *lm75[2];
279
280 u8 in[9]; /* Register value */
281 u8 in_max[9]; /* Register value */
282 u8 in_min[9]; /* Register value */
283 u16 low_bits; /* Additional resolution to voltage in6-0 */
284 u8 fan[7]; /* Register value */
285 u8 fan_min[7]; /* Register value */
286 u8 temp1[3]; /* current, over, thyst */
287 u8 temp_add[2][6]; /* Register value */
288 u8 fan_div[7]; /* Register encoding, shifted right */
289 u8 pwm[7]; /* We only consider the first 3 set of pwm,
290 although 792 chip has 7 set of pwm. */
291 u8 pwmenable[3];
292 u32 alarms; /* realtime status register encoding,combined */
293 u8 chassis; /* Chassis status */
294 u8 chassis_clear; /* CLR_CHS, clear chassis intrusion detection */
295 u8 thermal_cruise[3]; /* Smart FanI: Fan1,2,3 target value */
296 u8 tolerance[3]; /* Fan1,2,3 tolerance(Smart Fan I/II) */
297 u8 sf2_points[3][4]; /* Smart FanII: Fan1,2,3 temperature points */
298 u8 sf2_levels[3][4]; /* Smart FanII: Fan1,2,3 duty cycle levels */
299 };
300
301 static int w83792d_attach_adapter(struct i2c_adapter *adapter);
302 static int w83792d_detect(struct i2c_adapter *adapter, int address, int kind);
303 static int w83792d_detach_client(struct i2c_client *client);
304 static struct w83792d_data *w83792d_update_device(struct device *dev);
305
306 #ifdef DEBUG
307 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
308 #endif
309
310 static void w83792d_init_client(struct i2c_client *client);
311
312 static struct i2c_driver w83792d_driver = {
313 .driver = {
314 .name = "w83792d",
315 },
316 .attach_adapter = w83792d_attach_adapter,
317 .detach_client = w83792d_detach_client,
318 };
319
320 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
321 {
322 /* in7 and in8 do not have low bits, but the formula still works */
323 return ((data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03));
324 }
325
326 /* The SMBus locks itself. The Winbond W83792D chip has a bank register,
327 but the driver only accesses registers in bank 0, so we don't have
328 to switch banks and lock access between switches. */
329 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
330 {
331 return i2c_smbus_read_byte_data(client, reg);
332 }
333
334 static inline int
335 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
336 {
337 return i2c_smbus_write_byte_data(client, reg, value);
338 }
339
340 /* following are the sysfs callback functions */
341 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
342 char *buf)
343 {
344 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
345 int nr = sensor_attr->index;
346 struct w83792d_data *data = w83792d_update_device(dev);
347 return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
348 }
349
350 #define show_in_reg(reg) \
351 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
352 char *buf) \
353 { \
354 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
355 int nr = sensor_attr->index; \
356 struct w83792d_data *data = w83792d_update_device(dev); \
357 return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
358 }
359
360 show_in_reg(in_min);
361 show_in_reg(in_max);
362
363 #define store_in_reg(REG, reg) \
364 static ssize_t store_in_##reg (struct device *dev, \
365 struct device_attribute *attr, \
366 const char *buf, size_t count) \
367 { \
368 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
369 int nr = sensor_attr->index; \
370 struct i2c_client *client = to_i2c_client(dev); \
371 struct w83792d_data *data = i2c_get_clientdata(client); \
372 u32 val; \
373 \
374 val = simple_strtoul(buf, NULL, 10); \
375 mutex_lock(&data->update_lock); \
376 data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
377 w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
378 mutex_unlock(&data->update_lock); \
379 \
380 return count; \
381 }
382 store_in_reg(MIN, min);
383 store_in_reg(MAX, max);
384
385 #define show_fan_reg(reg) \
386 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
387 char *buf) \
388 { \
389 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
390 int nr = sensor_attr->index - 1; \
391 struct w83792d_data *data = w83792d_update_device(dev); \
392 return sprintf(buf,"%d\n", \
393 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
394 }
395
396 show_fan_reg(fan);
397 show_fan_reg(fan_min);
398
399 static ssize_t
400 store_fan_min(struct device *dev, struct device_attribute *attr,
401 const char *buf, size_t count)
402 {
403 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
404 int nr = sensor_attr->index - 1;
405 struct i2c_client *client = to_i2c_client(dev);
406 struct w83792d_data *data = i2c_get_clientdata(client);
407 u32 val;
408
409 val = simple_strtoul(buf, NULL, 10);
410 mutex_lock(&data->update_lock);
411 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
412 w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
413 data->fan_min[nr]);
414 mutex_unlock(&data->update_lock);
415
416 return count;
417 }
418
419 static ssize_t
420 show_fan_div(struct device *dev, struct device_attribute *attr,
421 char *buf)
422 {
423 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
424 int nr = sensor_attr->index;
425 struct w83792d_data *data = w83792d_update_device(dev);
426 return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
427 }
428
429 /* Note: we save and restore the fan minimum here, because its value is
430 determined in part by the fan divisor. This follows the principle of
431 least surprise; the user doesn't expect the fan minimum to change just
432 because the divisor changed. */
433 static ssize_t
434 store_fan_div(struct device *dev, struct device_attribute *attr,
435 const char *buf, size_t count)
436 {
437 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
438 int nr = sensor_attr->index - 1;
439 struct i2c_client *client = to_i2c_client(dev);
440 struct w83792d_data *data = i2c_get_clientdata(client);
441 unsigned long min;
442 /*u8 reg;*/
443 u8 fan_div_reg = 0;
444 u8 tmp_fan_div;
445
446 /* Save fan_min */
447 mutex_lock(&data->update_lock);
448 min = FAN_FROM_REG(data->fan_min[nr],
449 DIV_FROM_REG(data->fan_div[nr]));
450
451 data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
452
453 fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
454 fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
455 tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
456 : ((data->fan_div[nr]) & 0x07);
457 w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
458 fan_div_reg | tmp_fan_div);
459
460 /* Restore fan_min */
461 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
462 w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
463 mutex_unlock(&data->update_lock);
464
465 return count;
466 }
467
468 /* read/write the temperature1, includes measured value and limits */
469
470 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
471 char *buf)
472 {
473 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
474 int nr = sensor_attr->index;
475 struct w83792d_data *data = w83792d_update_device(dev);
476 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
477 }
478
479 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
480 const char *buf, size_t count)
481 {
482 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
483 int nr = sensor_attr->index;
484 struct i2c_client *client = to_i2c_client(dev);
485 struct w83792d_data *data = i2c_get_clientdata(client);
486 s32 val;
487
488 val = simple_strtol(buf, NULL, 10);
489 mutex_lock(&data->update_lock);
490 data->temp1[nr] = TEMP1_TO_REG(val);
491 w83792d_write_value(client, W83792D_REG_TEMP1[nr],
492 data->temp1[nr]);
493 mutex_unlock(&data->update_lock);
494
495 return count;
496 }
497
498 /* read/write the temperature2-3, includes measured value and limits */
499
500 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
501 char *buf)
502 {
503 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
504 int nr = sensor_attr->nr;
505 int index = sensor_attr->index;
506 struct w83792d_data *data = w83792d_update_device(dev);
507 return sprintf(buf,"%ld\n",
508 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
509 data->temp_add[nr][index+1]));
510 }
511
512 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
513 const char *buf, size_t count)
514 {
515 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
516 int nr = sensor_attr->nr;
517 int index = sensor_attr->index;
518 struct i2c_client *client = to_i2c_client(dev);
519 struct w83792d_data *data = i2c_get_clientdata(client);
520 s32 val;
521
522 val = simple_strtol(buf, NULL, 10);
523 mutex_lock(&data->update_lock);
524 data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
525 data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
526 w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
527 data->temp_add[nr][index]);
528 w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
529 data->temp_add[nr][index+1]);
530 mutex_unlock(&data->update_lock);
531
532 return count;
533 }
534
535 /* get reatime status of all sensors items: voltage, temp, fan */
536 static ssize_t
537 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
538 {
539 struct w83792d_data *data = w83792d_update_device(dev);
540 return sprintf(buf, "%d\n", data->alarms);
541 }
542
543 static ssize_t show_alarm(struct device *dev,
544 struct device_attribute *attr, char *buf)
545 {
546 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
547 int nr = sensor_attr->index;
548 struct w83792d_data *data = w83792d_update_device(dev);
549 return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
550 }
551
552 static ssize_t
553 show_pwm(struct device *dev, struct device_attribute *attr,
554 char *buf)
555 {
556 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
557 int nr = sensor_attr->index;
558 struct w83792d_data *data = w83792d_update_device(dev);
559 return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
560 }
561
562 static ssize_t
563 show_pwmenable(struct device *dev, struct device_attribute *attr,
564 char *buf)
565 {
566 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
567 int nr = sensor_attr->index - 1;
568 struct w83792d_data *data = w83792d_update_device(dev);
569 long pwm_enable_tmp = 1;
570
571 switch (data->pwmenable[nr]) {
572 case 0:
573 pwm_enable_tmp = 1; /* manual mode */
574 break;
575 case 1:
576 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
577 break;
578 case 2:
579 pwm_enable_tmp = 2; /* Smart Fan II */
580 break;
581 }
582
583 return sprintf(buf, "%ld\n", pwm_enable_tmp);
584 }
585
586 static ssize_t
587 store_pwm(struct device *dev, struct device_attribute *attr,
588 const char *buf, size_t count)
589 {
590 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
591 int nr = sensor_attr->index;
592 struct i2c_client *client = to_i2c_client(dev);
593 struct w83792d_data *data = i2c_get_clientdata(client);
594 u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255) >> 4;
595
596 mutex_lock(&data->update_lock);
597 val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
598 data->pwm[nr] = val;
599 w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
600 mutex_unlock(&data->update_lock);
601
602 return count;
603 }
604
605 static ssize_t
606 store_pwmenable(struct device *dev, struct device_attribute *attr,
607 const char *buf, size_t count)
608 {
609 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
610 int nr = sensor_attr->index - 1;
611 struct i2c_client *client = to_i2c_client(dev);
612 struct w83792d_data *data = i2c_get_clientdata(client);
613 u32 val;
614 u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
615
616 val = simple_strtoul(buf, NULL, 10);
617 if (val < 1 || val > 3)
618 return -EINVAL;
619
620 mutex_lock(&data->update_lock);
621 switch (val) {
622 case 1:
623 data->pwmenable[nr] = 0; /* manual mode */
624 break;
625 case 2:
626 data->pwmenable[nr] = 2; /* Smart Fan II */
627 break;
628 case 3:
629 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
630 break;
631 }
632 cfg1_tmp = data->pwmenable[0];
633 cfg2_tmp = (data->pwmenable[1]) << 2;
634 cfg3_tmp = (data->pwmenable[2]) << 4;
635 cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
636 fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
637 w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
638 mutex_unlock(&data->update_lock);
639
640 return count;
641 }
642
643 static ssize_t
644 show_pwm_mode(struct device *dev, struct device_attribute *attr,
645 char *buf)
646 {
647 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
648 int nr = sensor_attr->index;
649 struct w83792d_data *data = w83792d_update_device(dev);
650 return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
651 }
652
653 static ssize_t
654 store_pwm_mode(struct device *dev, struct device_attribute *attr,
655 const char *buf, size_t count)
656 {
657 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
658 int nr = sensor_attr->index;
659 struct i2c_client *client = to_i2c_client(dev);
660 struct w83792d_data *data = i2c_get_clientdata(client);
661 u32 val;
662
663 val = simple_strtoul(buf, NULL, 10);
664 if (val != 0 && val != 1)
665 return -EINVAL;
666
667 mutex_lock(&data->update_lock);
668 data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
669 if (val) { /* PWM mode */
670 data->pwm[nr] |= 0x80;
671 } else { /* DC mode */
672 data->pwm[nr] &= 0x7f;
673 }
674 w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
675 mutex_unlock(&data->update_lock);
676
677 return count;
678 }
679
680 static ssize_t
681 show_regs_chassis(struct device *dev, struct device_attribute *attr,
682 char *buf)
683 {
684 struct w83792d_data *data = w83792d_update_device(dev);
685 return sprintf(buf, "%d\n", data->chassis);
686 }
687
688 static ssize_t
689 show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
690 {
691 struct w83792d_data *data = w83792d_update_device(dev);
692 return sprintf(buf, "%d\n", data->chassis_clear);
693 }
694
695 static ssize_t
696 store_chassis_clear(struct device *dev, struct device_attribute *attr,
697 const char *buf, size_t count)
698 {
699 struct i2c_client *client = to_i2c_client(dev);
700 struct w83792d_data *data = i2c_get_clientdata(client);
701 u32 val;
702 u8 temp1 = 0, temp2 = 0;
703
704 val = simple_strtoul(buf, NULL, 10);
705 mutex_lock(&data->update_lock);
706 data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
707 temp1 = ((data->chassis_clear) << 7) & 0x80;
708 temp2 = w83792d_read_value(client,
709 W83792D_REG_CHASSIS_CLR) & 0x7f;
710 w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
711 mutex_unlock(&data->update_lock);
712
713 return count;
714 }
715
716 /* For Smart Fan I / Thermal Cruise */
717 static ssize_t
718 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
719 char *buf)
720 {
721 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
722 int nr = sensor_attr->index;
723 struct w83792d_data *data = w83792d_update_device(dev);
724 return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
725 }
726
727 static ssize_t
728 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
729 const char *buf, size_t count)
730 {
731 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
732 int nr = sensor_attr->index - 1;
733 struct i2c_client *client = to_i2c_client(dev);
734 struct w83792d_data *data = i2c_get_clientdata(client);
735 u32 val;
736 u8 target_tmp=0, target_mask=0;
737
738 val = simple_strtoul(buf, NULL, 10);
739 target_tmp = val;
740 target_tmp = target_tmp & 0x7f;
741 mutex_lock(&data->update_lock);
742 target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
743 data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
744 w83792d_write_value(client, W83792D_REG_THERMAL[nr],
745 (data->thermal_cruise[nr]) | target_mask);
746 mutex_unlock(&data->update_lock);
747
748 return count;
749 }
750
751 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
752 static ssize_t
753 show_tolerance(struct device *dev, struct device_attribute *attr,
754 char *buf)
755 {
756 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
757 int nr = sensor_attr->index;
758 struct w83792d_data *data = w83792d_update_device(dev);
759 return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
760 }
761
762 static ssize_t
763 store_tolerance(struct device *dev, struct device_attribute *attr,
764 const char *buf, size_t count)
765 {
766 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
767 int nr = sensor_attr->index - 1;
768 struct i2c_client *client = to_i2c_client(dev);
769 struct w83792d_data *data = i2c_get_clientdata(client);
770 u32 val;
771 u8 tol_tmp, tol_mask;
772
773 val = simple_strtoul(buf, NULL, 10);
774 mutex_lock(&data->update_lock);
775 tol_mask = w83792d_read_value(client,
776 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
777 tol_tmp = SENSORS_LIMIT(val, 0, 15);
778 tol_tmp &= 0x0f;
779 data->tolerance[nr] = tol_tmp;
780 if (nr == 1) {
781 tol_tmp <<= 4;
782 }
783 w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
784 tol_mask | tol_tmp);
785 mutex_unlock(&data->update_lock);
786
787 return count;
788 }
789
790 /* For Smart Fan II */
791 static ssize_t
792 show_sf2_point(struct device *dev, struct device_attribute *attr,
793 char *buf)
794 {
795 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
796 int nr = sensor_attr->nr;
797 int index = sensor_attr->index;
798 struct w83792d_data *data = w83792d_update_device(dev);
799 return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
800 }
801
802 static ssize_t
803 store_sf2_point(struct device *dev, struct device_attribute *attr,
804 const char *buf, size_t count)
805 {
806 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
807 int nr = sensor_attr->nr - 1;
808 int index = sensor_attr->index - 1;
809 struct i2c_client *client = to_i2c_client(dev);
810 struct w83792d_data *data = i2c_get_clientdata(client);
811 u32 val;
812 u8 mask_tmp = 0;
813
814 val = simple_strtoul(buf, NULL, 10);
815 mutex_lock(&data->update_lock);
816 data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
817 mask_tmp = w83792d_read_value(client,
818 W83792D_REG_POINTS[index][nr]) & 0x80;
819 w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
820 mask_tmp|data->sf2_points[index][nr]);
821 mutex_unlock(&data->update_lock);
822
823 return count;
824 }
825
826 static ssize_t
827 show_sf2_level(struct device *dev, struct device_attribute *attr,
828 char *buf)
829 {
830 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
831 int nr = sensor_attr->nr;
832 int index = sensor_attr->index;
833 struct w83792d_data *data = w83792d_update_device(dev);
834 return sprintf(buf, "%d\n",
835 (((data->sf2_levels[index-1][nr]) * 100) / 15));
836 }
837
838 static ssize_t
839 store_sf2_level(struct device *dev, struct device_attribute *attr,
840 const char *buf, size_t count)
841 {
842 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
843 int nr = sensor_attr->nr;
844 int index = sensor_attr->index - 1;
845 struct i2c_client *client = to_i2c_client(dev);
846 struct w83792d_data *data = i2c_get_clientdata(client);
847 u32 val;
848 u8 mask_tmp=0, level_tmp=0;
849
850 val = simple_strtoul(buf, NULL, 10);
851 mutex_lock(&data->update_lock);
852 data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
853 mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
854 & ((nr==3) ? 0xf0 : 0x0f);
855 if (nr==3) {
856 level_tmp = data->sf2_levels[index][nr];
857 } else {
858 level_tmp = data->sf2_levels[index][nr] << 4;
859 }
860 w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
861 mutex_unlock(&data->update_lock);
862
863 return count;
864 }
865
866 /* This function is called when:
867 * w83792d_driver is inserted (when this module is loaded), for each
868 available adapter
869 * when a new adapter is inserted (and w83792d_driver is still present) */
870 static int
871 w83792d_attach_adapter(struct i2c_adapter *adapter)
872 {
873 if (!(adapter->class & I2C_CLASS_HWMON))
874 return 0;
875 return i2c_probe(adapter, &addr_data, w83792d_detect);
876 }
877
878
879 static int
880 w83792d_create_subclient(struct i2c_adapter *adapter,
881 struct i2c_client *new_client, int addr,
882 struct i2c_client **sub_cli)
883 {
884 int err;
885 struct i2c_client *sub_client;
886
887 (*sub_cli) = sub_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
888 if (!(sub_client)) {
889 return -ENOMEM;
890 }
891 sub_client->addr = 0x48 + addr;
892 i2c_set_clientdata(sub_client, NULL);
893 sub_client->adapter = adapter;
894 sub_client->driver = &w83792d_driver;
895 sub_client->flags = 0;
896 strlcpy(sub_client->name, "w83792d subclient", I2C_NAME_SIZE);
897 if ((err = i2c_attach_client(sub_client))) {
898 dev_err(&new_client->dev, "subclient registration "
899 "at address 0x%x failed\n", sub_client->addr);
900 kfree(sub_client);
901 return err;
902 }
903 return 0;
904 }
905
906
907 static int
908 w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
909 struct i2c_client *new_client)
910 {
911 int i, id, err;
912 u8 val;
913 struct w83792d_data *data = i2c_get_clientdata(new_client);
914
915 id = i2c_adapter_id(adapter);
916 if (force_subclients[0] == id && force_subclients[1] == address) {
917 for (i = 2; i <= 3; i++) {
918 if (force_subclients[i] < 0x48 ||
919 force_subclients[i] > 0x4f) {
920 dev_err(&new_client->dev, "invalid subclient "
921 "address %d; must be 0x48-0x4f\n",
922 force_subclients[i]);
923 err = -ENODEV;
924 goto ERROR_SC_0;
925 }
926 }
927 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
928 (force_subclients[2] & 0x07) |
929 ((force_subclients[3] & 0x07) << 4));
930 }
931
932 val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
933 if (!(val & 0x08)) {
934 err = w83792d_create_subclient(adapter, new_client, val & 0x7,
935 &data->lm75[0]);
936 if (err < 0)
937 goto ERROR_SC_0;
938 }
939 if (!(val & 0x80)) {
940 if ((data->lm75[0] != NULL) &&
941 ((val & 0x7) == ((val >> 4) & 0x7))) {
942 dev_err(&new_client->dev, "duplicate addresses 0x%x, "
943 "use force_subclient\n", data->lm75[0]->addr);
944 err = -ENODEV;
945 goto ERROR_SC_1;
946 }
947 err = w83792d_create_subclient(adapter, new_client,
948 (val >> 4) & 0x7, &data->lm75[1]);
949 if (err < 0)
950 goto ERROR_SC_1;
951 }
952
953 return 0;
954
955 /* Undo inits in case of errors */
956
957 ERROR_SC_1:
958 if (data->lm75[0] != NULL) {
959 i2c_detach_client(data->lm75[0]);
960 kfree(data->lm75[0]);
961 }
962 ERROR_SC_0:
963 return err;
964 }
965
966 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
967 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
968 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
969 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
970 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
971 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
972 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
973 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
974 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
975 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
976 show_in_min, store_in_min, 0);
977 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
978 show_in_min, store_in_min, 1);
979 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
980 show_in_min, store_in_min, 2);
981 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
982 show_in_min, store_in_min, 3);
983 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
984 show_in_min, store_in_min, 4);
985 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
986 show_in_min, store_in_min, 5);
987 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
988 show_in_min, store_in_min, 6);
989 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
990 show_in_min, store_in_min, 7);
991 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
992 show_in_min, store_in_min, 8);
993 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
994 show_in_max, store_in_max, 0);
995 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
996 show_in_max, store_in_max, 1);
997 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
998 show_in_max, store_in_max, 2);
999 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
1000 show_in_max, store_in_max, 3);
1001 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
1002 show_in_max, store_in_max, 4);
1003 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
1004 show_in_max, store_in_max, 5);
1005 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1006 show_in_max, store_in_max, 6);
1007 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1008 show_in_max, store_in_max, 7);
1009 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1010 show_in_max, store_in_max, 8);
1011 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1012 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1013 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1014 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1015 show_temp1, store_temp1, 0, 1);
1016 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1017 store_temp23, 0, 2);
1018 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1019 store_temp23, 1, 2);
1020 static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1021 show_temp1, store_temp1, 0, 2);
1022 static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1023 show_temp23, store_temp23, 0, 4);
1024 static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1025 show_temp23, store_temp23, 1, 4);
1026 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1027 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1028 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1029 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1030 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1031 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1032 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1033 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1034 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1035 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1036 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1037 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1038 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1039 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1040 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1041 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1042 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1043 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1044 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1045 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1046 static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
1047 static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
1048 show_chassis_clear, store_chassis_clear);
1049 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1050 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1051 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1052 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1053 show_pwmenable, store_pwmenable, 1);
1054 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1055 show_pwmenable, store_pwmenable, 2);
1056 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1057 show_pwmenable, store_pwmenable, 3);
1058 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1059 show_pwm_mode, store_pwm_mode, 0);
1060 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1061 show_pwm_mode, store_pwm_mode, 1);
1062 static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1063 show_pwm_mode, store_pwm_mode, 2);
1064 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1065 show_tolerance, store_tolerance, 1);
1066 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1067 show_tolerance, store_tolerance, 2);
1068 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1069 show_tolerance, store_tolerance, 3);
1070 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1071 show_thermal_cruise, store_thermal_cruise, 1);
1072 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1073 show_thermal_cruise, store_thermal_cruise, 2);
1074 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1075 show_thermal_cruise, store_thermal_cruise, 3);
1076 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1077 show_sf2_point, store_sf2_point, 1, 1);
1078 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1079 show_sf2_point, store_sf2_point, 2, 1);
1080 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1081 show_sf2_point, store_sf2_point, 3, 1);
1082 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1083 show_sf2_point, store_sf2_point, 4, 1);
1084 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1085 show_sf2_point, store_sf2_point, 1, 2);
1086 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1087 show_sf2_point, store_sf2_point, 2, 2);
1088 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1089 show_sf2_point, store_sf2_point, 3, 2);
1090 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1091 show_sf2_point, store_sf2_point, 4, 2);
1092 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1093 show_sf2_point, store_sf2_point, 1, 3);
1094 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1095 show_sf2_point, store_sf2_point, 2, 3);
1096 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1097 show_sf2_point, store_sf2_point, 3, 3);
1098 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1099 show_sf2_point, store_sf2_point, 4, 3);
1100 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1101 show_sf2_level, store_sf2_level, 1, 1);
1102 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1103 show_sf2_level, store_sf2_level, 2, 1);
1104 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1105 show_sf2_level, store_sf2_level, 3, 1);
1106 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1107 show_sf2_level, store_sf2_level, 1, 2);
1108 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1109 show_sf2_level, store_sf2_level, 2, 2);
1110 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1111 show_sf2_level, store_sf2_level, 3, 2);
1112 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1113 show_sf2_level, store_sf2_level, 1, 3);
1114 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1115 show_sf2_level, store_sf2_level, 2, 3);
1116 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1117 show_sf2_level, store_sf2_level, 3, 3);
1118 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1119 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1120 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1121 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1122 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1123 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1124 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1125 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1126 show_fan_min, store_fan_min, 1);
1127 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1128 show_fan_min, store_fan_min, 2);
1129 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1130 show_fan_min, store_fan_min, 3);
1131 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1132 show_fan_min, store_fan_min, 4);
1133 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1134 show_fan_min, store_fan_min, 5);
1135 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1136 show_fan_min, store_fan_min, 6);
1137 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1138 show_fan_min, store_fan_min, 7);
1139 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1140 show_fan_div, store_fan_div, 1);
1141 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1142 show_fan_div, store_fan_div, 2);
1143 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1144 show_fan_div, store_fan_div, 3);
1145 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1146 show_fan_div, store_fan_div, 4);
1147 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1148 show_fan_div, store_fan_div, 5);
1149 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1150 show_fan_div, store_fan_div, 6);
1151 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1152 show_fan_div, store_fan_div, 7);
1153
1154 static struct attribute *w83792d_attributes_fan[4][5] = {
1155 {
1156 &sensor_dev_attr_fan4_input.dev_attr.attr,
1157 &sensor_dev_attr_fan4_min.dev_attr.attr,
1158 &sensor_dev_attr_fan4_div.dev_attr.attr,
1159 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1160 NULL
1161 }, {
1162 &sensor_dev_attr_fan5_input.dev_attr.attr,
1163 &sensor_dev_attr_fan5_min.dev_attr.attr,
1164 &sensor_dev_attr_fan5_div.dev_attr.attr,
1165 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1166 NULL
1167 }, {
1168 &sensor_dev_attr_fan6_input.dev_attr.attr,
1169 &sensor_dev_attr_fan6_min.dev_attr.attr,
1170 &sensor_dev_attr_fan6_div.dev_attr.attr,
1171 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1172 NULL
1173 }, {
1174 &sensor_dev_attr_fan7_input.dev_attr.attr,
1175 &sensor_dev_attr_fan7_min.dev_attr.attr,
1176 &sensor_dev_attr_fan7_div.dev_attr.attr,
1177 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1178 NULL
1179 }
1180 };
1181
1182 static const struct attribute_group w83792d_group_fan[4] = {
1183 { .attrs = w83792d_attributes_fan[0] },
1184 { .attrs = w83792d_attributes_fan[1] },
1185 { .attrs = w83792d_attributes_fan[2] },
1186 { .attrs = w83792d_attributes_fan[3] },
1187 };
1188
1189 static struct attribute *w83792d_attributes[] = {
1190 &sensor_dev_attr_in0_input.dev_attr.attr,
1191 &sensor_dev_attr_in0_max.dev_attr.attr,
1192 &sensor_dev_attr_in0_min.dev_attr.attr,
1193 &sensor_dev_attr_in1_input.dev_attr.attr,
1194 &sensor_dev_attr_in1_max.dev_attr.attr,
1195 &sensor_dev_attr_in1_min.dev_attr.attr,
1196 &sensor_dev_attr_in2_input.dev_attr.attr,
1197 &sensor_dev_attr_in2_max.dev_attr.attr,
1198 &sensor_dev_attr_in2_min.dev_attr.attr,
1199 &sensor_dev_attr_in3_input.dev_attr.attr,
1200 &sensor_dev_attr_in3_max.dev_attr.attr,
1201 &sensor_dev_attr_in3_min.dev_attr.attr,
1202 &sensor_dev_attr_in4_input.dev_attr.attr,
1203 &sensor_dev_attr_in4_max.dev_attr.attr,
1204 &sensor_dev_attr_in4_min.dev_attr.attr,
1205 &sensor_dev_attr_in5_input.dev_attr.attr,
1206 &sensor_dev_attr_in5_max.dev_attr.attr,
1207 &sensor_dev_attr_in5_min.dev_attr.attr,
1208 &sensor_dev_attr_in6_input.dev_attr.attr,
1209 &sensor_dev_attr_in6_max.dev_attr.attr,
1210 &sensor_dev_attr_in6_min.dev_attr.attr,
1211 &sensor_dev_attr_in7_input.dev_attr.attr,
1212 &sensor_dev_attr_in7_max.dev_attr.attr,
1213 &sensor_dev_attr_in7_min.dev_attr.attr,
1214 &sensor_dev_attr_in8_input.dev_attr.attr,
1215 &sensor_dev_attr_in8_max.dev_attr.attr,
1216 &sensor_dev_attr_in8_min.dev_attr.attr,
1217 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1218 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1219 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1220 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1221 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1222 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1223 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1224 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1225 &sensor_dev_attr_in8_alarm.dev_attr.attr,
1226 &sensor_dev_attr_temp1_input.dev_attr.attr,
1227 &sensor_dev_attr_temp1_max.dev_attr.attr,
1228 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1229 &sensor_dev_attr_temp2_input.dev_attr.attr,
1230 &sensor_dev_attr_temp2_max.dev_attr.attr,
1231 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1232 &sensor_dev_attr_temp3_input.dev_attr.attr,
1233 &sensor_dev_attr_temp3_max.dev_attr.attr,
1234 &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1235 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1236 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1237 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1238 &sensor_dev_attr_pwm1.dev_attr.attr,
1239 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1240 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1241 &sensor_dev_attr_pwm2.dev_attr.attr,
1242 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1243 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1244 &sensor_dev_attr_pwm3.dev_attr.attr,
1245 &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1246 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1247 &dev_attr_alarms.attr,
1248 &dev_attr_chassis.attr,
1249 &dev_attr_chassis_clear.attr,
1250 &sensor_dev_attr_tolerance1.dev_attr.attr,
1251 &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1252 &sensor_dev_attr_tolerance2.dev_attr.attr,
1253 &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1254 &sensor_dev_attr_tolerance3.dev_attr.attr,
1255 &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1256 &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1257 &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1258 &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1259 &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1260 &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1261 &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1262 &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1263 &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1264 &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1265 &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1266 &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1267 &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1268 &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1269 &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1270 &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1271 &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1272 &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1273 &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1274 &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1275 &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1276 &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1277 &sensor_dev_attr_fan1_input.dev_attr.attr,
1278 &sensor_dev_attr_fan1_min.dev_attr.attr,
1279 &sensor_dev_attr_fan1_div.dev_attr.attr,
1280 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1281 &sensor_dev_attr_fan2_input.dev_attr.attr,
1282 &sensor_dev_attr_fan2_min.dev_attr.attr,
1283 &sensor_dev_attr_fan2_div.dev_attr.attr,
1284 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1285 &sensor_dev_attr_fan3_input.dev_attr.attr,
1286 &sensor_dev_attr_fan3_min.dev_attr.attr,
1287 &sensor_dev_attr_fan3_div.dev_attr.attr,
1288 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1289 NULL
1290 };
1291
1292 static const struct attribute_group w83792d_group = {
1293 .attrs = w83792d_attributes,
1294 };
1295
1296 static int
1297 w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
1298 {
1299 int i = 0, val1 = 0, val2;
1300 struct i2c_client *client;
1301 struct device *dev;
1302 struct w83792d_data *data;
1303 int err = 0;
1304 const char *client_name = "";
1305
1306 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1307 goto ERROR0;
1308 }
1309
1310 /* OK. For now, we presume we have a valid client. We now create the
1311 client structure, even though we cannot fill it completely yet.
1312 But it allows us to access w83792d_{read,write}_value. */
1313
1314 if (!(data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
1315 err = -ENOMEM;
1316 goto ERROR0;
1317 }
1318
1319 client = &data->client;
1320 dev = &client->dev;
1321 i2c_set_clientdata(client, data);
1322 client->addr = address;
1323 client->adapter = adapter;
1324 client->driver = &w83792d_driver;
1325 client->flags = 0;
1326
1327 /* Now, we do the remaining detection. */
1328
1329 /* The w83792d may be stuck in some other bank than bank 0. This may
1330 make reading other information impossible. Specify a force=... or
1331 force_*=... parameter, and the Winbond will be reset to the right
1332 bank. */
1333 if (kind < 0) {
1334 if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80) {
1335 dev_dbg(dev, "Detection failed at step 1\n");
1336 goto ERROR1;
1337 }
1338 val1 = w83792d_read_value(client, W83792D_REG_BANK);
1339 val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1340 /* Check for Winbond ID if in bank 0 */
1341 if (!(val1 & 0x07)) { /* is Bank0 */
1342 if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
1343 ((val1 & 0x80) && (val2 != 0x5c))) {
1344 dev_dbg(dev, "Detection failed at step 2\n");
1345 goto ERROR1;
1346 }
1347 }
1348 /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1349 should match */
1350 if (w83792d_read_value(client,
1351 W83792D_REG_I2C_ADDR) != address) {
1352 dev_dbg(dev, "Detection failed at step 3\n");
1353 goto ERROR1;
1354 }
1355 }
1356
1357 /* We have either had a force parameter, or we have already detected the
1358 Winbond. Put it now into bank 0 and Vendor ID High Byte */
1359 w83792d_write_value(client,
1360 W83792D_REG_BANK,
1361 (w83792d_read_value(client,
1362 W83792D_REG_BANK) & 0x78) | 0x80);
1363
1364 /* Determine the chip type. */
1365 if (kind <= 0) {
1366 /* get vendor ID */
1367 val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1368 if (val2 != 0x5c) { /* the vendor is NOT Winbond */
1369 goto ERROR1;
1370 }
1371 val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1372 if (val1 == 0x7a) {
1373 kind = w83792d;
1374 } else {
1375 if (kind == 0)
1376 dev_warn(dev,
1377 "w83792d: Ignoring 'force' parameter for"
1378 " unknown chip at adapter %d, address"
1379 " 0x%02x\n", i2c_adapter_id(adapter),
1380 address);
1381 goto ERROR1;
1382 }
1383 }
1384
1385 if (kind == w83792d) {
1386 client_name = "w83792d";
1387 } else {
1388 dev_err(dev, "w83792d: Internal error: unknown kind (%d)?!?\n",
1389 kind);
1390 goto ERROR1;
1391 }
1392
1393 /* Fill in the remaining client fields and put into the global list */
1394 strlcpy(client->name, client_name, I2C_NAME_SIZE);
1395 data->type = kind;
1396
1397 data->valid = 0;
1398 mutex_init(&data->update_lock);
1399
1400 /* Tell the I2C layer a new client has arrived */
1401 if ((err = i2c_attach_client(client)))
1402 goto ERROR1;
1403
1404 if ((err = w83792d_detect_subclients(adapter, address,
1405 kind, client)))
1406 goto ERROR2;
1407
1408 /* Initialize the chip */
1409 w83792d_init_client(client);
1410
1411 /* A few vars need to be filled upon startup */
1412 for (i = 0; i < 7; i++) {
1413 data->fan_min[i] = w83792d_read_value(client,
1414 W83792D_REG_FAN_MIN[i]);
1415 }
1416
1417 /* Register sysfs hooks */
1418 if ((err = sysfs_create_group(&dev->kobj, &w83792d_group)))
1419 goto ERROR3;
1420
1421 /* Read GPIO enable register to check if pins for fan 4,5 are used as
1422 GPIO */
1423 val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1424
1425 if (!(val1 & 0x40))
1426 if ((err = sysfs_create_group(&dev->kobj,
1427 &w83792d_group_fan[0])))
1428 goto exit_remove_files;
1429
1430 if (!(val1 & 0x20))
1431 if ((err = sysfs_create_group(&dev->kobj,
1432 &w83792d_group_fan[1])))
1433 goto exit_remove_files;
1434
1435 val1 = w83792d_read_value(client, W83792D_REG_PIN);
1436 if (val1 & 0x40)
1437 if ((err = sysfs_create_group(&dev->kobj,
1438 &w83792d_group_fan[2])))
1439 goto exit_remove_files;
1440
1441 if (val1 & 0x04)
1442 if ((err = sysfs_create_group(&dev->kobj,
1443 &w83792d_group_fan[3])))
1444 goto exit_remove_files;
1445
1446 data->hwmon_dev = hwmon_device_register(dev);
1447 if (IS_ERR(data->hwmon_dev)) {
1448 err = PTR_ERR(data->hwmon_dev);
1449 goto exit_remove_files;
1450 }
1451
1452 return 0;
1453
1454 exit_remove_files:
1455 sysfs_remove_group(&dev->kobj, &w83792d_group);
1456 for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1457 sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1458 ERROR3:
1459 if (data->lm75[0] != NULL) {
1460 i2c_detach_client(data->lm75[0]);
1461 kfree(data->lm75[0]);
1462 }
1463 if (data->lm75[1] != NULL) {
1464 i2c_detach_client(data->lm75[1]);
1465 kfree(data->lm75[1]);
1466 }
1467 ERROR2:
1468 i2c_detach_client(client);
1469 ERROR1:
1470 kfree(data);
1471 ERROR0:
1472 return err;
1473 }
1474
1475 static int
1476 w83792d_detach_client(struct i2c_client *client)
1477 {
1478 struct w83792d_data *data = i2c_get_clientdata(client);
1479 int err, i;
1480
1481 /* main client */
1482 if (data) {
1483 hwmon_device_unregister(data->hwmon_dev);
1484 sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1485 for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1486 sysfs_remove_group(&client->dev.kobj,
1487 &w83792d_group_fan[i]);
1488 }
1489
1490 if ((err = i2c_detach_client(client)))
1491 return err;
1492
1493 /* main client */
1494 if (data)
1495 kfree(data);
1496 /* subclient */
1497 else
1498 kfree(client);
1499
1500 return 0;
1501 }
1502
1503 static void
1504 w83792d_init_client(struct i2c_client *client)
1505 {
1506 u8 temp2_cfg, temp3_cfg, vid_in_b;
1507
1508 if (init) {
1509 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1510 }
1511 /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1512 W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1513 vin0/vin1 can be modified by user;
1514 W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1515 vin0/vin1 auto-updated, can NOT be modified by user. */
1516 vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1517 w83792d_write_value(client, W83792D_REG_VID_IN_B,
1518 vid_in_b & 0xbf);
1519
1520 temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1521 temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1522 w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1523 temp2_cfg & 0xe6);
1524 w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1525 temp3_cfg & 0xe6);
1526
1527 /* Start monitoring */
1528 w83792d_write_value(client, W83792D_REG_CONFIG,
1529 (w83792d_read_value(client,
1530 W83792D_REG_CONFIG) & 0xf7)
1531 | 0x01);
1532 }
1533
1534 static struct w83792d_data *w83792d_update_device(struct device *dev)
1535 {
1536 struct i2c_client *client = to_i2c_client(dev);
1537 struct w83792d_data *data = i2c_get_clientdata(client);
1538 int i, j;
1539 u8 reg_array_tmp[4], reg_tmp;
1540
1541 mutex_lock(&data->update_lock);
1542
1543 if (time_after
1544 (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1545 || time_before(jiffies, data->last_updated) || !data->valid) {
1546 dev_dbg(dev, "Starting device update\n");
1547
1548 /* Update the voltages measured value and limits */
1549 for (i = 0; i < 9; i++) {
1550 data->in[i] = w83792d_read_value(client,
1551 W83792D_REG_IN[i]);
1552 data->in_max[i] = w83792d_read_value(client,
1553 W83792D_REG_IN_MAX[i]);
1554 data->in_min[i] = w83792d_read_value(client,
1555 W83792D_REG_IN_MIN[i]);
1556 }
1557 data->low_bits = w83792d_read_value(client,
1558 W83792D_REG_LOW_BITS1) +
1559 (w83792d_read_value(client,
1560 W83792D_REG_LOW_BITS2) << 8);
1561 for (i = 0; i < 7; i++) {
1562 /* Update the Fan measured value and limits */
1563 data->fan[i] = w83792d_read_value(client,
1564 W83792D_REG_FAN[i]);
1565 data->fan_min[i] = w83792d_read_value(client,
1566 W83792D_REG_FAN_MIN[i]);
1567 /* Update the PWM/DC Value and PWM/DC flag */
1568 data->pwm[i] = w83792d_read_value(client,
1569 W83792D_REG_PWM[i]);
1570 }
1571
1572 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1573 data->pwmenable[0] = reg_tmp & 0x03;
1574 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1575 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1576
1577 for (i = 0; i < 3; i++) {
1578 data->temp1[i] = w83792d_read_value(client,
1579 W83792D_REG_TEMP1[i]);
1580 }
1581 for (i = 0; i < 2; i++) {
1582 for (j = 0; j < 6; j++) {
1583 data->temp_add[i][j] = w83792d_read_value(
1584 client,W83792D_REG_TEMP_ADD[i][j]);
1585 }
1586 }
1587
1588 /* Update the Fan Divisor */
1589 for (i = 0; i < 4; i++) {
1590 reg_array_tmp[i] = w83792d_read_value(client,
1591 W83792D_REG_FAN_DIV[i]);
1592 }
1593 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1594 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1595 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1596 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1597 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1598 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1599 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1600
1601 /* Update the realtime status */
1602 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1603 (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1604 (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1605
1606 /* Update CaseOpen status and it's CLR_CHS. */
1607 data->chassis = (w83792d_read_value(client,
1608 W83792D_REG_CHASSIS) >> 5) & 0x01;
1609 data->chassis_clear = (w83792d_read_value(client,
1610 W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
1611
1612 /* Update Thermal Cruise/Smart Fan I target value */
1613 for (i = 0; i < 3; i++) {
1614 data->thermal_cruise[i] =
1615 w83792d_read_value(client,
1616 W83792D_REG_THERMAL[i]) & 0x7f;
1617 }
1618
1619 /* Update Smart Fan I/II tolerance */
1620 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1621 data->tolerance[0] = reg_tmp & 0x0f;
1622 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1623 data->tolerance[2] = w83792d_read_value(client,
1624 W83792D_REG_TOLERANCE[2]) & 0x0f;
1625
1626 /* Update Smart Fan II temperature points */
1627 for (i = 0; i < 3; i++) {
1628 for (j = 0; j < 4; j++) {
1629 data->sf2_points[i][j] = w83792d_read_value(
1630 client,W83792D_REG_POINTS[i][j]) & 0x7f;
1631 }
1632 }
1633
1634 /* Update Smart Fan II duty cycle levels */
1635 for (i = 0; i < 3; i++) {
1636 reg_tmp = w83792d_read_value(client,
1637 W83792D_REG_LEVELS[i][0]);
1638 data->sf2_levels[i][0] = reg_tmp & 0x0f;
1639 data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1640 reg_tmp = w83792d_read_value(client,
1641 W83792D_REG_LEVELS[i][2]);
1642 data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1643 data->sf2_levels[i][3] = reg_tmp & 0x0f;
1644 }
1645
1646 data->last_updated = jiffies;
1647 data->valid = 1;
1648 }
1649
1650 mutex_unlock(&data->update_lock);
1651
1652 #ifdef DEBUG
1653 w83792d_print_debug(data, dev);
1654 #endif
1655
1656 return data;
1657 }
1658
1659 #ifdef DEBUG
1660 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1661 {
1662 int i=0, j=0;
1663 dev_dbg(dev, "==========The following is the debug message...========\n");
1664 dev_dbg(dev, "9 set of Voltages: =====>\n");
1665 for (i=0; i<9; i++) {
1666 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1667 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1668 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1669 }
1670 dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1671 dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1672 dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1673 for (i=0; i<7; i++) {
1674 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1675 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1676 dev_dbg(dev, "pwm[%d] is: 0x%x\n", i, data->pwm[i]);
1677 }
1678 dev_dbg(dev, "3 set of Temperatures: =====>\n");
1679 for (i=0; i<3; i++) {
1680 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1681 }
1682
1683 for (i=0; i<2; i++) {
1684 for (j=0; j<6; j++) {
1685 dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1686 data->temp_add[i][j]);
1687 }
1688 }
1689
1690 for (i=0; i<7; i++) {
1691 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1692 }
1693 dev_dbg(dev, "==========End of the debug message...==================\n");
1694 dev_dbg(dev, "\n");
1695 }
1696 #endif
1697
1698 static int __init
1699 sensors_w83792d_init(void)
1700 {
1701 return i2c_add_driver(&w83792d_driver);
1702 }
1703
1704 static void __exit
1705 sensors_w83792d_exit(void)
1706 {
1707 i2c_del_driver(&w83792d_driver);
1708 }
1709
1710 MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1711 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1712 MODULE_LICENSE("GPL");
1713
1714 module_init(sensors_w83792d_init);
1715 module_exit(sensors_w83792d_exit);
1716
Support for the Chinese Samsung S3C2440 based development boards