2 w83791d.c - Part of lm_sensors, Linux kernel modules for hardware
5 Copyright (C) 2006-2007 Charles Spirakis <bezaur@gmail.com>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 Supports following chips:
25 Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
26 w83791d 10 5 5 3 0x71 0x5ca3 yes no
28 The w83791d chip appears to be part way between the 83781d and the
29 83792d. Thus, this file is derived from both the w83792d.c and
32 The w83791g chip is the same as the w83791d but lead-free.
35 #include <linux/module.h>
36 #include <linux/init.h>
37 #include <linux/slab.h>
38 #include <linux/i2c.h>
39 #include <linux/hwmon.h>
40 #include <linux/hwmon-vid.h>
41 #include <linux/hwmon-sysfs.h>
42 #include <linux/err.h>
43 #include <linux/mutex.h>
45 #define NUMBER_OF_VIN 10
46 #define NUMBER_OF_FANIN 5
47 #define NUMBER_OF_TEMPIN 3
48 #define NUMBER_OF_PWM 5
50 /* Addresses to scan */
51 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
54 /* Insmod parameters */
55 I2C_CLIENT_INSMOD_1(w83791d);
56 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
57 "{bus, clientaddr, subclientaddr1, subclientaddr2}");
60 module_param(reset, bool, 0);
61 MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset");
64 module_param(init, bool, 0);
65 MODULE_PARM_DESC(init, "Set to one to force extra software initialization");
67 /* The W83791D registers */
68 static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = {
69 0x20, /* VCOREA in DataSheet */
70 0x21, /* VINR0 in DataSheet */
71 0x22, /* +3.3VIN in DataSheet */
72 0x23, /* VDD5V in DataSheet */
73 0x24, /* +12VIN in DataSheet */
74 0x25, /* -12VIN in DataSheet */
75 0x26, /* -5VIN in DataSheet */
76 0xB0, /* 5VSB in DataSheet */
77 0xB1, /* VBAT in DataSheet */
78 0xB2 /* VINR1 in DataSheet */
81 static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = {
82 0x2B, /* VCOREA High Limit in DataSheet */
83 0x2D, /* VINR0 High Limit in DataSheet */
84 0x2F, /* +3.3VIN High Limit in DataSheet */
85 0x31, /* VDD5V High Limit in DataSheet */
86 0x33, /* +12VIN High Limit in DataSheet */
87 0x35, /* -12VIN High Limit in DataSheet */
88 0x37, /* -5VIN High Limit in DataSheet */
89 0xB4, /* 5VSB High Limit in DataSheet */
90 0xB6, /* VBAT High Limit in DataSheet */
91 0xB8 /* VINR1 High Limit in DataSheet */
93 static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = {
94 0x2C, /* VCOREA Low Limit in DataSheet */
95 0x2E, /* VINR0 Low Limit in DataSheet */
96 0x30, /* +3.3VIN Low Limit in DataSheet */
97 0x32, /* VDD5V Low Limit in DataSheet */
98 0x34, /* +12VIN Low Limit in DataSheet */
99 0x36, /* -12VIN Low Limit in DataSheet */
100 0x38, /* -5VIN Low Limit in DataSheet */
101 0xB5, /* 5VSB Low Limit in DataSheet */
102 0xB7, /* VBAT Low Limit in DataSheet */
103 0xB9 /* VINR1 Low Limit in DataSheet */
105 static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = {
106 0x28, /* FAN 1 Count in DataSheet */
107 0x29, /* FAN 2 Count in DataSheet */
108 0x2A, /* FAN 3 Count in DataSheet */
109 0xBA, /* FAN 4 Count in DataSheet */
110 0xBB, /* FAN 5 Count in DataSheet */
112 static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = {
113 0x3B, /* FAN 1 Count Low Limit in DataSheet */
114 0x3C, /* FAN 2 Count Low Limit in DataSheet */
115 0x3D, /* FAN 3 Count Low Limit in DataSheet */
116 0xBC, /* FAN 4 Count Low Limit in DataSheet */
117 0xBD, /* FAN 5 Count Low Limit in DataSheet */
120 static const u8 W83791D_REG_PWM[NUMBER_OF_PWM] = {
121 0x81, /* PWM 1 duty cycle register in DataSheet */
122 0x83, /* PWM 2 duty cycle register in DataSheet */
123 0x94, /* PWM 3 duty cycle register in DataSheet */
124 0xA0, /* PWM 4 duty cycle register in DataSheet */
125 0xA1, /* PWM 5 duty cycle register in DataSheet */
128 static const u8 W83791D_REG_TEMP_TARGET[3] = {
129 0x85, /* PWM 1 target temperature for temp 1 */
130 0x86, /* PWM 2 target temperature for temp 2 */
131 0x96, /* PWM 3 target temperature for temp 3 */
134 static const u8 W83791D_REG_TEMP_TOL[2] = {
135 0x87, /* PWM 1/2 temperature tolerance */
136 0x97, /* PWM 3 temperature tolerance */
139 static const u8 W83791D_REG_FAN_CFG[2] = {
140 0x84, /* FAN 1/2 configuration */
141 0x95, /* FAN 3 configuration */
144 static const u8 W83791D_REG_FAN_DIV[3] = {
145 0x47, /* contains FAN1 and FAN2 Divisor */
146 0x4b, /* contains FAN3 Divisor */
147 0x5C, /* contains FAN4 and FAN5 Divisor */
150 #define W83791D_REG_BANK 0x4E
151 #define W83791D_REG_TEMP2_CONFIG 0xC2
152 #define W83791D_REG_TEMP3_CONFIG 0xCA
154 static const u8 W83791D_REG_TEMP1[3] = {
155 0x27, /* TEMP 1 in DataSheet */
156 0x39, /* TEMP 1 Over in DataSheet */
157 0x3A, /* TEMP 1 Hyst in DataSheet */
160 static const u8 W83791D_REG_TEMP_ADD[2][6] = {
161 {0xC0, /* TEMP 2 in DataSheet */
162 0xC1, /* TEMP 2(0.5 deg) in DataSheet */
163 0xC5, /* TEMP 2 Over High part in DataSheet */
164 0xC6, /* TEMP 2 Over Low part in DataSheet */
165 0xC3, /* TEMP 2 Thyst High part in DataSheet */
166 0xC4}, /* TEMP 2 Thyst Low part in DataSheet */
167 {0xC8, /* TEMP 3 in DataSheet */
168 0xC9, /* TEMP 3(0.5 deg) in DataSheet */
169 0xCD, /* TEMP 3 Over High part in DataSheet */
170 0xCE, /* TEMP 3 Over Low part in DataSheet */
171 0xCB, /* TEMP 3 Thyst High part in DataSheet */
172 0xCC} /* TEMP 3 Thyst Low part in DataSheet */
175 #define W83791D_REG_BEEP_CONFIG 0x4D
177 static const u8 W83791D_REG_BEEP_CTRL[3] = {
178 0x56, /* BEEP Control Register 1 */
179 0x57, /* BEEP Control Register 2 */
180 0xA3, /* BEEP Control Register 3 */
183 #define W83791D_REG_GPIO 0x15
184 #define W83791D_REG_CONFIG 0x40
185 #define W83791D_REG_VID_FANDIV 0x47
186 #define W83791D_REG_DID_VID4 0x49
187 #define W83791D_REG_WCHIPID 0x58
188 #define W83791D_REG_CHIPMAN 0x4F
189 #define W83791D_REG_PIN 0x4B
190 #define W83791D_REG_I2C_SUBADDR 0x4A
192 #define W83791D_REG_ALARM1 0xA9 /* realtime status register1 */
193 #define W83791D_REG_ALARM2 0xAA /* realtime status register2 */
194 #define W83791D_REG_ALARM3 0xAB /* realtime status register3 */
196 #define W83791D_REG_VBAT 0x5D
197 #define W83791D_REG_I2C_ADDR 0x48
199 /* The SMBus locks itself. The Winbond W83791D has a bank select register
200 (index 0x4e), but the driver only accesses registers in bank 0. Since
201 we don't switch banks, we don't need any special code to handle
202 locking access between bank switches */
203 static inline int w83791d_read(struct i2c_client *client, u8 reg)
205 return i2c_smbus_read_byte_data(client, reg);
208 static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value)
210 return i2c_smbus_write_byte_data(client, reg, value);
213 /* The analog voltage inputs have 16mV LSB. Since the sysfs output is
214 in mV as would be measured on the chip input pin, need to just
215 multiply/divide by 16 to translate from/to register values. */
216 #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8) / 16), 0, 255))
217 #define IN_FROM_REG(val) ((val) * 16)
219 static u8 fan_to_reg(long rpm, int div)
223 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
224 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
227 #define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \
228 ((val) == 255 ? 0 : \
229 1350000 / ((val) * (div))))
231 /* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */
232 #define TEMP1_FROM_REG(val) ((val) * 1000)
233 #define TEMP1_TO_REG(val) ((val) <= -128000 ? -128 : \
234 (val) >= 127000 ? 127 : \
235 (val) < 0 ? ((val) - 500) / 1000 : \
236 ((val) + 500) / 1000)
238 /* for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius
239 Assumes the top 8 bits are the integral amount and the bottom 8 bits
240 are the fractional amount. Since we only have 0.5 degree resolution,
241 the bottom 7 bits will always be zero */
242 #define TEMP23_FROM_REG(val) ((val) / 128 * 500)
243 #define TEMP23_TO_REG(val) ((val) <= -128000 ? 0x8000 : \
244 (val) >= 127500 ? 0x7F80 : \
245 (val) < 0 ? ((val) - 250) / 500 * 128 : \
246 ((val) + 250) / 500 * 128)
248 /* for thermal cruise target temp, 7-bits, LSB = 1 degree Celsius */
249 #define TARGET_TEMP_TO_REG(val) ((val) < 0 ? 0 : \
250 (val) >= 127000 ? 127 : \
251 ((val) + 500) / 1000)
253 /* for thermal cruise temp tolerance, 4-bits, LSB = 1 degree Celsius */
254 #define TOL_TEMP_TO_REG(val) ((val) < 0 ? 0 : \
255 (val) >= 15000 ? 15 : \
256 ((val) + 500) / 1000)
258 #define BEEP_MASK_TO_REG(val) ((val) & 0xffffff)
259 #define BEEP_MASK_FROM_REG(val) ((val) & 0xffffff)
261 #define DIV_FROM_REG(val) (1 << (val))
263 static u8 div_to_reg(int nr, long val)
267 /* fan divisors max out at 128 */
268 val = SENSORS_LIMIT(val, 1, 128) >> 1;
269 for (i = 0; i < 7; i++) {
277 struct w83791d_data {
278 struct device *hwmon_dev;
279 struct mutex update_lock;
281 char valid; /* !=0 if following fields are valid */
282 unsigned long last_updated; /* In jiffies */
284 /* array of 2 pointers to subclients */
285 struct i2c_client *lm75[2];
288 u8 in[NUMBER_OF_VIN]; /* Register value */
289 u8 in_max[NUMBER_OF_VIN]; /* Register value */
290 u8 in_min[NUMBER_OF_VIN]; /* Register value */
293 u8 fan[NUMBER_OF_FANIN]; /* Register value */
294 u8 fan_min[NUMBER_OF_FANIN]; /* Register value */
295 u8 fan_div[NUMBER_OF_FANIN]; /* Register encoding, shifted right */
297 /* Temperature sensors */
299 s8 temp1[3]; /* current, over, thyst */
300 s16 temp_add[2][3]; /* fixed point value. Top 8 bits are the
301 integral part, bottom 8 bits are the
302 fractional part. We only use the top
303 9 bits as the resolution is only
304 to the 0.5 degree C...
305 two sensors with three values
309 u8 pwm[5]; /* pwm duty cycle */
310 u8 pwm_enable[3]; /* pwm enable status for fan 1-3
311 (fan 4-5 only support manual mode) */
313 u8 temp_target[3]; /* pwm 1-3 target temperature */
314 u8 temp_tolerance[3]; /* pwm 1-3 temperature tolerance */
317 u32 alarms; /* realtime status register encoding,combined */
318 u8 beep_enable; /* Global beep enable */
319 u32 beep_mask; /* Mask off specific beeps */
320 u8 vid; /* Register encoding, combined */
321 u8 vrm; /* hwmon-vid */
324 static int w83791d_probe(struct i2c_client *client,
325 const struct i2c_device_id *id);
326 static int w83791d_detect(struct i2c_client *client, int kind,
327 struct i2c_board_info *info);
328 static int w83791d_remove(struct i2c_client *client);
330 static int w83791d_read(struct i2c_client *client, u8 register);
331 static int w83791d_write(struct i2c_client *client, u8 register, u8 value);
332 static struct w83791d_data *w83791d_update_device(struct device *dev);
335 static void w83791d_print_debug(struct w83791d_data *data, struct device *dev);
338 static void w83791d_init_client(struct i2c_client *client);
340 static const struct i2c_device_id w83791d_id[] = {
341 { "w83791d", w83791d },
344 MODULE_DEVICE_TABLE(i2c, w83791d_id);
346 static struct i2c_driver w83791d_driver = {
347 .class = I2C_CLASS_HWMON,
351 .probe = w83791d_probe,
352 .remove = w83791d_remove,
353 .id_table = w83791d_id,
354 .detect = w83791d_detect,
355 .address_data = &addr_data,
358 /* following are the sysfs callback functions */
359 #define show_in_reg(reg) \
360 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
363 struct sensor_device_attribute *sensor_attr = \
364 to_sensor_dev_attr(attr); \
365 struct w83791d_data *data = w83791d_update_device(dev); \
366 int nr = sensor_attr->index; \
367 return sprintf(buf,"%d\n", IN_FROM_REG(data->reg[nr])); \
374 #define store_in_reg(REG, reg) \
375 static ssize_t store_in_##reg(struct device *dev, \
376 struct device_attribute *attr, \
377 const char *buf, size_t count) \
379 struct sensor_device_attribute *sensor_attr = \
380 to_sensor_dev_attr(attr); \
381 struct i2c_client *client = to_i2c_client(dev); \
382 struct w83791d_data *data = i2c_get_clientdata(client); \
383 unsigned long val = simple_strtoul(buf, NULL, 10); \
384 int nr = sensor_attr->index; \
386 mutex_lock(&data->update_lock); \
387 data->in_##reg[nr] = IN_TO_REG(val); \
388 w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \
389 mutex_unlock(&data->update_lock); \
393 store_in_reg(MIN, min);
394 store_in_reg(MAX, max);
396 static struct sensor_device_attribute sda_in_input[] = {
397 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
398 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
399 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
400 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
401 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
402 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
403 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
404 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
405 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
406 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
409 static struct sensor_device_attribute sda_in_min[] = {
410 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
411 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
412 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
413 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
414 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
415 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
416 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
417 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
418 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
419 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
422 static struct sensor_device_attribute sda_in_max[] = {
423 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
424 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
425 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
426 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
427 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
428 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
429 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
430 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
431 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
432 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
436 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
439 struct sensor_device_attribute *sensor_attr =
440 to_sensor_dev_attr(attr);
441 struct w83791d_data *data = w83791d_update_device(dev);
442 int bitnr = sensor_attr->index;
444 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
447 static ssize_t store_beep(struct device *dev, struct device_attribute *attr,
448 const char *buf, size_t count)
450 struct sensor_device_attribute *sensor_attr =
451 to_sensor_dev_attr(attr);
452 struct i2c_client *client = to_i2c_client(dev);
453 struct w83791d_data *data = i2c_get_clientdata(client);
454 int bitnr = sensor_attr->index;
455 int bytenr = bitnr / 8;
456 long val = simple_strtol(buf, NULL, 10) ? 1 : 0;
458 mutex_lock(&data->update_lock);
460 data->beep_mask &= ~(0xff << (bytenr * 8));
461 data->beep_mask |= w83791d_read(client, W83791D_REG_BEEP_CTRL[bytenr])
464 data->beep_mask &= ~(1 << bitnr);
465 data->beep_mask |= val << bitnr;
467 w83791d_write(client, W83791D_REG_BEEP_CTRL[bytenr],
468 (data->beep_mask >> (bytenr * 8)) & 0xff);
470 mutex_unlock(&data->update_lock);
475 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
478 struct sensor_device_attribute *sensor_attr =
479 to_sensor_dev_attr(attr);
480 struct w83791d_data *data = w83791d_update_device(dev);
481 int bitnr = sensor_attr->index;
483 return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
486 /* Note: The bitmask for the beep enable/disable is different than
487 the bitmask for the alarm. */
488 static struct sensor_device_attribute sda_in_beep[] = {
489 SENSOR_ATTR(in0_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 0),
490 SENSOR_ATTR(in1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 13),
491 SENSOR_ATTR(in2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 2),
492 SENSOR_ATTR(in3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 3),
493 SENSOR_ATTR(in4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 8),
494 SENSOR_ATTR(in5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 9),
495 SENSOR_ATTR(in6_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 10),
496 SENSOR_ATTR(in7_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 16),
497 SENSOR_ATTR(in8_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 17),
498 SENSOR_ATTR(in9_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 14),
501 static struct sensor_device_attribute sda_in_alarm[] = {
502 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
503 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
504 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
505 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
506 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
507 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9),
508 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10),
509 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19),
510 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20),
511 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 14),
514 #define show_fan_reg(reg) \
515 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
518 struct sensor_device_attribute *sensor_attr = \
519 to_sensor_dev_attr(attr); \
520 struct w83791d_data *data = w83791d_update_device(dev); \
521 int nr = sensor_attr->index; \
522 return sprintf(buf,"%d\n", \
523 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
527 show_fan_reg(fan_min);
529 static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr,
530 const char *buf, size_t count)
532 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
533 struct i2c_client *client = to_i2c_client(dev);
534 struct w83791d_data *data = i2c_get_clientdata(client);
535 unsigned long val = simple_strtoul(buf, NULL, 10);
536 int nr = sensor_attr->index;
538 mutex_lock(&data->update_lock);
539 data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr]));
540 w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
541 mutex_unlock(&data->update_lock);
546 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
549 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
550 int nr = sensor_attr->index;
551 struct w83791d_data *data = w83791d_update_device(dev);
552 return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
555 /* Note: we save and restore the fan minimum here, because its value is
556 determined in part by the fan divisor. This follows the principle of
557 least suprise; the user doesn't expect the fan minimum to change just
558 because the divisor changed. */
559 static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr,
560 const char *buf, size_t count)
562 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
563 struct i2c_client *client = to_i2c_client(dev);
564 struct w83791d_data *data = i2c_get_clientdata(client);
565 int nr = sensor_attr->index;
575 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
577 mutex_lock(&data->update_lock);
578 data->fan_div[nr] = div_to_reg(nr, simple_strtoul(buf, NULL, 10));
608 dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr);
614 fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx])
616 tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask;
618 w83791d_write(client, W83791D_REG_FAN_DIV[indx],
619 fan_div_reg | tmp_fan_div);
621 /* Bit 2 of fans 0-2 is stored in the vbat register (bits 5-7) */
623 keep_mask = ~(1 << (nr + 5));
624 vbat_reg = w83791d_read(client, W83791D_REG_VBAT)
626 tmp_fan_div = (data->fan_div[nr] << (3 + nr)) & ~keep_mask;
627 w83791d_write(client, W83791D_REG_VBAT,
628 vbat_reg | tmp_fan_div);
631 /* Restore fan_min */
632 data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr]));
633 w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
638 mutex_unlock(&data->update_lock);
643 static struct sensor_device_attribute sda_fan_input[] = {
644 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
645 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
646 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
647 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
648 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
651 static struct sensor_device_attribute sda_fan_min[] = {
652 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO,
653 show_fan_min, store_fan_min, 0),
654 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO,
655 show_fan_min, store_fan_min, 1),
656 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO,
657 show_fan_min, store_fan_min, 2),
658 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO,
659 show_fan_min, store_fan_min, 3),
660 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO,
661 show_fan_min, store_fan_min, 4),
664 static struct sensor_device_attribute sda_fan_div[] = {
665 SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO,
666 show_fan_div, store_fan_div, 0),
667 SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO,
668 show_fan_div, store_fan_div, 1),
669 SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO,
670 show_fan_div, store_fan_div, 2),
671 SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO,
672 show_fan_div, store_fan_div, 3),
673 SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO,
674 show_fan_div, store_fan_div, 4),
677 static struct sensor_device_attribute sda_fan_beep[] = {
678 SENSOR_ATTR(fan1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 6),
679 SENSOR_ATTR(fan2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 7),
680 SENSOR_ATTR(fan3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 11),
681 SENSOR_ATTR(fan4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 21),
682 SENSOR_ATTR(fan5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 22),
685 static struct sensor_device_attribute sda_fan_alarm[] = {
686 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
687 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
688 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
689 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21),
690 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22),
693 /* read/write PWMs */
694 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
697 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
698 int nr = sensor_attr->index;
699 struct w83791d_data *data = w83791d_update_device(dev);
700 return sprintf(buf, "%u\n", data->pwm[nr]);
703 static ssize_t store_pwm(struct device *dev, struct device_attribute *attr,
704 const char *buf, size_t count)
706 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
707 struct i2c_client *client = to_i2c_client(dev);
708 struct w83791d_data *data = i2c_get_clientdata(client);
709 int nr = sensor_attr->index;
712 if (strict_strtoul(buf, 10, &val))
715 mutex_lock(&data->update_lock);
716 data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
717 w83791d_write(client, W83791D_REG_PWM[nr], data->pwm[nr]);
718 mutex_unlock(&data->update_lock);
722 static struct sensor_device_attribute sda_pwm[] = {
723 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO,
724 show_pwm, store_pwm, 0),
725 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO,
726 show_pwm, store_pwm, 1),
727 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO,
728 show_pwm, store_pwm, 2),
729 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO,
730 show_pwm, store_pwm, 3),
731 SENSOR_ATTR(pwm5, S_IWUSR | S_IRUGO,
732 show_pwm, store_pwm, 4),
735 static ssize_t show_pwmenable(struct device *dev, struct device_attribute *attr,
738 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
739 int nr = sensor_attr->index;
740 struct w83791d_data *data = w83791d_update_device(dev);
741 return sprintf(buf, "%u\n", data->pwm_enable[nr] + 1);
744 static ssize_t store_pwmenable(struct device *dev,
745 struct device_attribute *attr, const char *buf, size_t count)
747 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
748 struct i2c_client *client = to_i2c_client(dev);
749 struct w83791d_data *data = i2c_get_clientdata(client);
750 int nr = sensor_attr->index;
757 int ret = strict_strtoul(buf, 10, &val);
759 if (ret || val < 1 || val > 3)
762 mutex_lock(&data->update_lock);
763 data->pwm_enable[nr] = val - 1;
782 reg_cfg_tmp = w83791d_read(client, W83791D_REG_FAN_CFG[reg_idx]);
783 reg_cfg_tmp = (reg_cfg_tmp & keep_mask) |
784 data->pwm_enable[nr] << val_shift;
786 w83791d_write(client, W83791D_REG_FAN_CFG[reg_idx], reg_cfg_tmp);
787 mutex_unlock(&data->update_lock);
791 static struct sensor_device_attribute sda_pwmenable[] = {
792 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
793 show_pwmenable, store_pwmenable, 0),
794 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
795 show_pwmenable, store_pwmenable, 1),
796 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
797 show_pwmenable, store_pwmenable, 2),
800 /* For Smart Fan I / Thermal Cruise */
801 static ssize_t show_temp_target(struct device *dev,
802 struct device_attribute *attr, char *buf)
804 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
805 struct w83791d_data *data = w83791d_update_device(dev);
806 int nr = sensor_attr->index;
807 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_target[nr]));
810 static ssize_t store_temp_target(struct device *dev,
811 struct device_attribute *attr, const char *buf, size_t count)
813 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
814 struct i2c_client *client = to_i2c_client(dev);
815 struct w83791d_data *data = i2c_get_clientdata(client);
816 int nr = sensor_attr->index;
820 if (strict_strtoul(buf, 10, &val))
823 mutex_lock(&data->update_lock);
824 data->temp_target[nr] = TARGET_TEMP_TO_REG(val);
825 target_mask = w83791d_read(client,
826 W83791D_REG_TEMP_TARGET[nr]) & 0x80;
827 w83791d_write(client, W83791D_REG_TEMP_TARGET[nr],
828 data->temp_target[nr] | target_mask);
829 mutex_unlock(&data->update_lock);
833 static struct sensor_device_attribute sda_temp_target[] = {
834 SENSOR_ATTR(temp1_target, S_IWUSR | S_IRUGO,
835 show_temp_target, store_temp_target, 0),
836 SENSOR_ATTR(temp2_target, S_IWUSR | S_IRUGO,
837 show_temp_target, store_temp_target, 1),
838 SENSOR_ATTR(temp3_target, S_IWUSR | S_IRUGO,
839 show_temp_target, store_temp_target, 2),
842 static ssize_t show_temp_tolerance(struct device *dev,
843 struct device_attribute *attr, char *buf)
845 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
846 struct w83791d_data *data = w83791d_update_device(dev);
847 int nr = sensor_attr->index;
848 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_tolerance[nr]));
851 static ssize_t store_temp_tolerance(struct device *dev,
852 struct device_attribute *attr, const char *buf, size_t count)
854 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
855 struct i2c_client *client = to_i2c_client(dev);
856 struct w83791d_data *data = i2c_get_clientdata(client);
857 int nr = sensor_attr->index;
864 if (strict_strtoul(buf, 10, &val))
885 mutex_lock(&data->update_lock);
886 data->temp_tolerance[nr] = TOL_TEMP_TO_REG(val);
887 target_mask = w83791d_read(client,
888 W83791D_REG_TEMP_TOL[reg_idx]) & keep_mask;
889 w83791d_write(client, W83791D_REG_TEMP_TOL[reg_idx],
890 (data->temp_tolerance[nr] << val_shift) | target_mask);
891 mutex_unlock(&data->update_lock);
895 static struct sensor_device_attribute sda_temp_tolerance[] = {
896 SENSOR_ATTR(temp1_tolerance, S_IWUSR | S_IRUGO,
897 show_temp_tolerance, store_temp_tolerance, 0),
898 SENSOR_ATTR(temp2_tolerance, S_IWUSR | S_IRUGO,
899 show_temp_tolerance, store_temp_tolerance, 1),
900 SENSOR_ATTR(temp3_tolerance, S_IWUSR | S_IRUGO,
901 show_temp_tolerance, store_temp_tolerance, 2),
904 /* read/write the temperature1, includes measured value and limits */
905 static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
908 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
909 struct w83791d_data *data = w83791d_update_device(dev);
910 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index]));
913 static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr,
914 const char *buf, size_t count)
916 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
917 struct i2c_client *client = to_i2c_client(dev);
918 struct w83791d_data *data = i2c_get_clientdata(client);
919 long val = simple_strtol(buf, NULL, 10);
920 int nr = attr->index;
922 mutex_lock(&data->update_lock);
923 data->temp1[nr] = TEMP1_TO_REG(val);
924 w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]);
925 mutex_unlock(&data->update_lock);
929 /* read/write temperature2-3, includes measured value and limits */
930 static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr,
933 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
934 struct w83791d_data *data = w83791d_update_device(dev);
936 int index = attr->index;
937 return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index]));
940 static ssize_t store_temp23(struct device *dev,
941 struct device_attribute *devattr,
942 const char *buf, size_t count)
944 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
945 struct i2c_client *client = to_i2c_client(dev);
946 struct w83791d_data *data = i2c_get_clientdata(client);
947 long val = simple_strtol(buf, NULL, 10);
949 int index = attr->index;
951 mutex_lock(&data->update_lock);
952 data->temp_add[nr][index] = TEMP23_TO_REG(val);
953 w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2],
954 data->temp_add[nr][index] >> 8);
955 w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1],
956 data->temp_add[nr][index] & 0x80);
957 mutex_unlock(&data->update_lock);
962 static struct sensor_device_attribute_2 sda_temp_input[] = {
963 SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0),
964 SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0),
965 SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0),
968 static struct sensor_device_attribute_2 sda_temp_max[] = {
969 SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
970 show_temp1, store_temp1, 0, 1),
971 SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR,
972 show_temp23, store_temp23, 0, 1),
973 SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR,
974 show_temp23, store_temp23, 1, 1),
977 static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
978 SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
979 show_temp1, store_temp1, 0, 2),
980 SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
981 show_temp23, store_temp23, 0, 2),
982 SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
983 show_temp23, store_temp23, 1, 2),
986 /* Note: The bitmask for the beep enable/disable is different than
987 the bitmask for the alarm. */
988 static struct sensor_device_attribute sda_temp_beep[] = {
989 SENSOR_ATTR(temp1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 4),
990 SENSOR_ATTR(temp2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 5),
991 SENSOR_ATTR(temp3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 1),
994 static struct sensor_device_attribute sda_temp_alarm[] = {
995 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
996 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
997 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
1000 /* get reatime status of all sensors items: voltage, temp, fan */
1001 static ssize_t show_alarms_reg(struct device *dev,
1002 struct device_attribute *attr, char *buf)
1004 struct w83791d_data *data = w83791d_update_device(dev);
1005 return sprintf(buf, "%u\n", data->alarms);
1008 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1012 #define GLOBAL_BEEP_ENABLE_SHIFT 15
1013 #define GLOBAL_BEEP_ENABLE_MASK (1 << GLOBAL_BEEP_ENABLE_SHIFT)
1015 static ssize_t show_beep_enable(struct device *dev,
1016 struct device_attribute *attr, char *buf)
1018 struct w83791d_data *data = w83791d_update_device(dev);
1019 return sprintf(buf, "%d\n", data->beep_enable);
1022 static ssize_t show_beep_mask(struct device *dev,
1023 struct device_attribute *attr, char *buf)
1025 struct w83791d_data *data = w83791d_update_device(dev);
1026 return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask));
1030 static ssize_t store_beep_mask(struct device *dev,
1031 struct device_attribute *attr,
1032 const char *buf, size_t count)
1034 struct i2c_client *client = to_i2c_client(dev);
1035 struct w83791d_data *data = i2c_get_clientdata(client);
1036 long val = simple_strtol(buf, NULL, 10);
1039 mutex_lock(&data->update_lock);
1041 /* The beep_enable state overrides any enabling request from
1043 data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK;
1044 data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1046 val = data->beep_mask;
1048 for (i = 0; i < 3; i++) {
1049 w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff));
1053 mutex_unlock(&data->update_lock);
1058 static ssize_t store_beep_enable(struct device *dev,
1059 struct device_attribute *attr,
1060 const char *buf, size_t count)
1062 struct i2c_client *client = to_i2c_client(dev);
1063 struct w83791d_data *data = i2c_get_clientdata(client);
1064 long val = simple_strtol(buf, NULL, 10);
1066 mutex_lock(&data->update_lock);
1068 data->beep_enable = val ? 1 : 0;
1070 /* Keep the full mask value in sync with the current enable */
1071 data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK;
1072 data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1074 /* The global control is in the second beep control register
1075 so only need to update that register */
1076 val = (data->beep_mask >> 8) & 0xff;
1078 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val);
1080 mutex_unlock(&data->update_lock);
1085 static struct sensor_device_attribute sda_beep_ctrl[] = {
1086 SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR,
1087 show_beep_enable, store_beep_enable, 0),
1088 SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR,
1089 show_beep_mask, store_beep_mask, 1)
1092 /* cpu voltage regulation information */
1093 static ssize_t show_vid_reg(struct device *dev,
1094 struct device_attribute *attr, char *buf)
1096 struct w83791d_data *data = w83791d_update_device(dev);
1097 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1100 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1102 static ssize_t show_vrm_reg(struct device *dev,
1103 struct device_attribute *attr, char *buf)
1105 struct w83791d_data *data = dev_get_drvdata(dev);
1106 return sprintf(buf, "%d\n", data->vrm);
1109 static ssize_t store_vrm_reg(struct device *dev,
1110 struct device_attribute *attr,
1111 const char *buf, size_t count)
1113 struct w83791d_data *data = dev_get_drvdata(dev);
1115 /* No lock needed as vrm is internal to the driver
1116 (not read from a chip register) and so is not
1117 updated in w83791d_update_device() */
1118 data->vrm = simple_strtoul(buf, NULL, 10);
1123 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1125 #define IN_UNIT_ATTRS(X) \
1126 &sda_in_input[X].dev_attr.attr, \
1127 &sda_in_min[X].dev_attr.attr, \
1128 &sda_in_max[X].dev_attr.attr, \
1129 &sda_in_beep[X].dev_attr.attr, \
1130 &sda_in_alarm[X].dev_attr.attr
1132 #define FAN_UNIT_ATTRS(X) \
1133 &sda_fan_input[X].dev_attr.attr, \
1134 &sda_fan_min[X].dev_attr.attr, \
1135 &sda_fan_div[X].dev_attr.attr, \
1136 &sda_fan_beep[X].dev_attr.attr, \
1137 &sda_fan_alarm[X].dev_attr.attr
1139 #define TEMP_UNIT_ATTRS(X) \
1140 &sda_temp_input[X].dev_attr.attr, \
1141 &sda_temp_max[X].dev_attr.attr, \
1142 &sda_temp_max_hyst[X].dev_attr.attr, \
1143 &sda_temp_beep[X].dev_attr.attr, \
1144 &sda_temp_alarm[X].dev_attr.attr
1146 static struct attribute *w83791d_attributes[] = {
1163 &dev_attr_alarms.attr,
1164 &sda_beep_ctrl[0].dev_attr.attr,
1165 &sda_beep_ctrl[1].dev_attr.attr,
1166 &dev_attr_cpu0_vid.attr,
1168 &sda_pwm[0].dev_attr.attr,
1169 &sda_pwm[1].dev_attr.attr,
1170 &sda_pwm[2].dev_attr.attr,
1171 &sda_pwmenable[0].dev_attr.attr,
1172 &sda_pwmenable[1].dev_attr.attr,
1173 &sda_pwmenable[2].dev_attr.attr,
1174 &sda_temp_target[0].dev_attr.attr,
1175 &sda_temp_target[1].dev_attr.attr,
1176 &sda_temp_target[2].dev_attr.attr,
1177 &sda_temp_tolerance[0].dev_attr.attr,
1178 &sda_temp_tolerance[1].dev_attr.attr,
1179 &sda_temp_tolerance[2].dev_attr.attr,
1183 static const struct attribute_group w83791d_group = {
1184 .attrs = w83791d_attributes,
1187 /* Separate group of attributes for fan/pwm 4-5. Their pins can also be
1188 in use for GPIO in which case their sysfs-interface should not be made
1190 static struct attribute *w83791d_attributes_fanpwm45[] = {
1193 &sda_pwm[3].dev_attr.attr,
1194 &sda_pwm[4].dev_attr.attr,
1198 static const struct attribute_group w83791d_group_fanpwm45 = {
1199 .attrs = w83791d_attributes_fanpwm45,
1202 static int w83791d_detect_subclients(struct i2c_client *client)
1204 struct i2c_adapter *adapter = client->adapter;
1205 struct w83791d_data *data = i2c_get_clientdata(client);
1206 int address = client->addr;
1210 id = i2c_adapter_id(adapter);
1211 if (force_subclients[0] == id && force_subclients[1] == address) {
1212 for (i = 2; i <= 3; i++) {
1213 if (force_subclients[i] < 0x48 ||
1214 force_subclients[i] > 0x4f) {
1215 dev_err(&client->dev,
1216 "invalid subclient "
1217 "address %d; must be 0x48-0x4f\n",
1218 force_subclients[i]);
1223 w83791d_write(client, W83791D_REG_I2C_SUBADDR,
1224 (force_subclients[2] & 0x07) |
1225 ((force_subclients[3] & 0x07) << 4));
1228 val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
1229 if (!(val & 0x08)) {
1230 data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
1232 if (!(val & 0x80)) {
1233 if ((data->lm75[0] != NULL) &&
1234 ((val & 0x7) == ((val >> 4) & 0x7))) {
1235 dev_err(&client->dev,
1236 "duplicate addresses 0x%x, "
1237 "use force_subclient\n",
1238 data->lm75[0]->addr);
1242 data->lm75[1] = i2c_new_dummy(adapter,
1243 0x48 + ((val >> 4) & 0x7));
1248 /* Undo inits in case of errors */
1251 if (data->lm75[0] != NULL)
1252 i2c_unregister_device(data->lm75[0]);
1258 /* Return 0 if detection is successful, -ENODEV otherwise */
1259 static int w83791d_detect(struct i2c_client *client, int kind,
1260 struct i2c_board_info *info)
1262 struct i2c_adapter *adapter = client->adapter;
1264 unsigned short address = client->addr;
1266 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1270 /* The w83791d may be stuck in some other bank than bank 0. This may
1271 make reading other information impossible. Specify a force=...
1272 parameter, and the Winbond will be reset to the right bank. */
1274 if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80) {
1277 val1 = w83791d_read(client, W83791D_REG_BANK);
1278 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1279 /* Check for Winbond ID if in bank 0 */
1280 if (!(val1 & 0x07)) {
1281 /* yes it is Bank0 */
1282 if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
1283 ((val1 & 0x80) && (val2 != 0x5c))) {
1287 /* If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
1289 if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address) {
1294 /* We either have a force parameter or we have reason to
1295 believe it is a Winbond chip. Either way, we want bank 0 and
1296 Vendor ID high byte */
1297 val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78;
1298 w83791d_write(client, W83791D_REG_BANK, val1 | 0x80);
1300 /* Verify it is a Winbond w83791d */
1303 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1304 if (val2 != 0x5c) { /* the vendor is NOT Winbond */
1307 val1 = w83791d_read(client, W83791D_REG_WCHIPID);
1312 dev_warn(&adapter->dev,
1313 "w83791d: Ignoring 'force' parameter "
1314 "for unknown chip at adapter %d, "
1316 i2c_adapter_id(adapter), address);
1321 strlcpy(info->type, "w83791d", I2C_NAME_SIZE);
1326 static int w83791d_probe(struct i2c_client *client,
1327 const struct i2c_device_id *id)
1329 struct w83791d_data *data;
1330 struct device *dev = &client->dev;
1336 val1 = w83791d_read(client, W83791D_REG_DID_VID4);
1337 dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n",
1338 (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
1341 data = kzalloc(sizeof(struct w83791d_data), GFP_KERNEL);
1347 i2c_set_clientdata(client, data);
1348 mutex_init(&data->update_lock);
1350 err = w83791d_detect_subclients(client);
1354 /* Initialize the chip */
1355 w83791d_init_client(client);
1357 /* If the fan_div is changed, make sure there is a rational
1359 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1360 data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]);
1363 /* Register sysfs hooks */
1364 if ((err = sysfs_create_group(&client->dev.kobj, &w83791d_group)))
1367 /* Check if pins of fan/pwm 4-5 are in use as GPIO */
1368 has_fanpwm45 = w83791d_read(client, W83791D_REG_GPIO) & 0x10;
1370 err = sysfs_create_group(&client->dev.kobj,
1371 &w83791d_group_fanpwm45);
1376 /* Everything is ready, now register the working device */
1377 data->hwmon_dev = hwmon_device_register(dev);
1378 if (IS_ERR(data->hwmon_dev)) {
1379 err = PTR_ERR(data->hwmon_dev);
1387 sysfs_remove_group(&client->dev.kobj, &w83791d_group_fanpwm45);
1389 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1391 if (data->lm75[0] != NULL)
1392 i2c_unregister_device(data->lm75[0]);
1393 if (data->lm75[1] != NULL)
1394 i2c_unregister_device(data->lm75[1]);
1401 static int w83791d_remove(struct i2c_client *client)
1403 struct w83791d_data *data = i2c_get_clientdata(client);
1405 hwmon_device_unregister(data->hwmon_dev);
1406 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1408 if (data->lm75[0] != NULL)
1409 i2c_unregister_device(data->lm75[0]);
1410 if (data->lm75[1] != NULL)
1411 i2c_unregister_device(data->lm75[1]);
1417 static void w83791d_init_client(struct i2c_client *client)
1419 struct w83791d_data *data = i2c_get_clientdata(client);
1423 /* The difference between reset and init is that reset
1424 does a hard reset of the chip via index 0x40, bit 7,
1425 but init simply forces certain registers to have "sane"
1426 values. The hope is that the BIOS has done the right
1427 thing (which is why the default is reset=0, init=0),
1428 but if not, reset is the hard hammer and init
1429 is the soft mallet both of which are trying to whack
1430 things into place...
1431 NOTE: The data sheet makes a distinction between
1432 "power on defaults" and "reset by MR". As far as I can tell,
1433 the hard reset puts everything into a power-on state so I'm
1434 not sure what "reset by MR" means or how it can happen.
1436 if (reset || init) {
1437 /* keep some BIOS settings when we... */
1438 old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG);
1441 /* ... reset the chip and ... */
1442 w83791d_write(client, W83791D_REG_CONFIG, 0x80);
1445 /* ... disable power-on abnormal beep */
1446 w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80);
1448 /* disable the global beep (not done by hard reset) */
1449 tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]);
1450 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef);
1453 /* Make sure monitoring is turned on for add-ons */
1454 tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG);
1456 w83791d_write(client, W83791D_REG_TEMP2_CONFIG,
1460 tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG);
1462 w83791d_write(client, W83791D_REG_TEMP3_CONFIG,
1466 /* Start monitoring */
1467 tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7;
1468 w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01);
1472 data->vrm = vid_which_vrm();
1475 static struct w83791d_data *w83791d_update_device(struct device *dev)
1477 struct i2c_client *client = to_i2c_client(dev);
1478 struct w83791d_data *data = i2c_get_clientdata(client);
1480 u8 reg_array_tmp[3];
1483 mutex_lock(&data->update_lock);
1485 if (time_after(jiffies, data->last_updated + (HZ * 3))
1487 dev_dbg(dev, "Starting w83791d device update\n");
1489 /* Update the voltages measured value and limits */
1490 for (i = 0; i < NUMBER_OF_VIN; i++) {
1491 data->in[i] = w83791d_read(client,
1493 data->in_max[i] = w83791d_read(client,
1494 W83791D_REG_IN_MAX[i]);
1495 data->in_min[i] = w83791d_read(client,
1496 W83791D_REG_IN_MIN[i]);
1499 /* Update the fan counts and limits */
1500 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1501 /* Update the Fan measured value and limits */
1502 data->fan[i] = w83791d_read(client,
1503 W83791D_REG_FAN[i]);
1504 data->fan_min[i] = w83791d_read(client,
1505 W83791D_REG_FAN_MIN[i]);
1508 /* Update the fan divisor */
1509 for (i = 0; i < 3; i++) {
1510 reg_array_tmp[i] = w83791d_read(client,
1511 W83791D_REG_FAN_DIV[i]);
1513 data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03;
1514 data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03;
1515 data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03;
1516 data->fan_div[3] = reg_array_tmp[2] & 0x07;
1517 data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07;
1519 /* The fan divisor for fans 0-2 get bit 2 from
1520 bits 5-7 respectively of vbat register */
1521 vbat_reg = w83791d_read(client, W83791D_REG_VBAT);
1522 for (i = 0; i < 3; i++)
1523 data->fan_div[i] |= (vbat_reg >> (3 + i)) & 0x04;
1525 /* Update PWM duty cycle */
1526 for (i = 0; i < NUMBER_OF_PWM; i++) {
1527 data->pwm[i] = w83791d_read(client,
1528 W83791D_REG_PWM[i]);
1531 /* Update PWM enable status */
1532 for (i = 0; i < 2; i++) {
1533 reg_array_tmp[i] = w83791d_read(client,
1534 W83791D_REG_FAN_CFG[i]);
1536 data->pwm_enable[0] = (reg_array_tmp[0] >> 2) & 0x03;
1537 data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03;
1538 data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03;
1540 /* Update PWM target temperature */
1541 for (i = 0; i < 3; i++) {
1542 data->temp_target[i] = w83791d_read(client,
1543 W83791D_REG_TEMP_TARGET[i]) & 0x7f;
1546 /* Update PWM temperature tolerance */
1547 for (i = 0; i < 2; i++) {
1548 reg_array_tmp[i] = w83791d_read(client,
1549 W83791D_REG_TEMP_TOL[i]);
1551 data->temp_tolerance[0] = reg_array_tmp[0] & 0x0f;
1552 data->temp_tolerance[1] = (reg_array_tmp[0] >> 4) & 0x0f;
1553 data->temp_tolerance[2] = reg_array_tmp[1] & 0x0f;
1555 /* Update the first temperature sensor */
1556 for (i = 0; i < 3; i++) {
1557 data->temp1[i] = w83791d_read(client,
1558 W83791D_REG_TEMP1[i]);
1561 /* Update the rest of the temperature sensors */
1562 for (i = 0; i < 2; i++) {
1563 for (j = 0; j < 3; j++) {
1564 data->temp_add[i][j] =
1565 (w83791d_read(client,
1566 W83791D_REG_TEMP_ADD[i][j * 2]) << 8) |
1567 w83791d_read(client,
1568 W83791D_REG_TEMP_ADD[i][j * 2 + 1]);
1572 /* Update the realtime status */
1574 w83791d_read(client, W83791D_REG_ALARM1) +
1575 (w83791d_read(client, W83791D_REG_ALARM2) << 8) +
1576 (w83791d_read(client, W83791D_REG_ALARM3) << 16);
1578 /* Update the beep configuration information */
1580 w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) +
1581 (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) +
1582 (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16);
1584 /* Extract global beep enable flag */
1586 (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01;
1588 /* Update the cpu voltage information */
1589 i = w83791d_read(client, W83791D_REG_VID_FANDIV);
1590 data->vid = i & 0x0f;
1591 data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01)
1594 data->last_updated = jiffies;
1598 mutex_unlock(&data->update_lock);
1601 w83791d_print_debug(data, dev);
1608 static void w83791d_print_debug(struct w83791d_data *data, struct device *dev)
1612 dev_dbg(dev, "======Start of w83791d debug values======\n");
1613 dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN);
1614 for (i = 0; i < NUMBER_OF_VIN; i++) {
1615 dev_dbg(dev, "vin[%d] is: 0x%02x\n", i, data->in[i]);
1616 dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]);
1617 dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]);
1619 dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN);
1620 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1621 dev_dbg(dev, "fan[%d] is: 0x%02x\n", i, data->fan[i]);
1622 dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]);
1623 dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]);
1626 /* temperature math is signed, but only print out the
1628 dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN);
1629 for (i = 0; i < 3; i++) {
1630 dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]);
1632 for (i = 0; i < 2; i++) {
1633 for (j = 0; j < 3; j++) {
1634 dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j,
1635 (u16) data->temp_add[i][j]);
1639 dev_dbg(dev, "Misc Information: ===>\n");
1640 dev_dbg(dev, "alarm is: 0x%08x\n", data->alarms);
1641 dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask);
1642 dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable);
1643 dev_dbg(dev, "vid is: 0x%02x\n", data->vid);
1644 dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm);
1645 dev_dbg(dev, "=======End of w83791d debug values========\n");
1650 static int __init sensors_w83791d_init(void)
1652 return i2c_add_driver(&w83791d_driver);
1655 static void __exit sensors_w83791d_exit(void)
1657 i2c_del_driver(&w83791d_driver);
1660 MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>");
1661 MODULE_DESCRIPTION("W83791D driver");
1662 MODULE_LICENSE("GPL");
1664 module_init(sensors_w83791d_init);
1665 module_exit(sensors_w83791d_exit);