2 lm85.c - Part of lm_sensors, Linux kernel modules for hardware
4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
5 Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
6 Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
7 Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
8 Copyright (C) 2007, 2008 Jean Delvare <khali@linux-fr.org>
10 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/slab.h>
30 #include <linux/jiffies.h>
31 #include <linux/i2c.h>
32 #include <linux/hwmon.h>
33 #include <linux/hwmon-vid.h>
34 #include <linux/hwmon-sysfs.h>
35 #include <linux/err.h>
36 #include <linux/mutex.h>
38 /* Addresses to scan */
39 static const unsigned short normal_i2c
[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END
};
41 /* Insmod parameters */
42 I2C_CLIENT_INSMOD_6(lm85b
, lm85c
, adm1027
, adt7463
, emc6d100
, emc6d102
);
44 /* The LM85 registers */
46 #define LM85_REG_IN(nr) (0x20 + (nr))
47 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
48 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
50 #define LM85_REG_TEMP(nr) (0x25 + (nr))
51 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
52 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
54 /* Fan speeds are LSB, MSB (2 bytes) */
55 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
56 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
58 #define LM85_REG_PWM(nr) (0x30 + (nr))
60 #define LM85_REG_COMPANY 0x3e
61 #define LM85_REG_VERSTEP 0x3f
62 /* These are the recognized values for the above regs */
63 #define LM85_COMPANY_NATIONAL 0x01
64 #define LM85_COMPANY_ANALOG_DEV 0x41
65 #define LM85_COMPANY_SMSC 0x5c
66 #define LM85_VERSTEP_VMASK 0xf0
67 #define LM85_VERSTEP_GENERIC 0x60
68 #define LM85_VERSTEP_LM85C 0x60
69 #define LM85_VERSTEP_LM85B 0x62
70 #define LM85_VERSTEP_ADM1027 0x60
71 #define LM85_VERSTEP_ADT7463 0x62
72 #define LM85_VERSTEP_ADT7463C 0x6A
73 #define LM85_VERSTEP_EMC6D100_A0 0x60
74 #define LM85_VERSTEP_EMC6D100_A1 0x61
75 #define LM85_VERSTEP_EMC6D102 0x65
77 #define LM85_REG_CONFIG 0x40
79 #define LM85_REG_ALARM1 0x41
80 #define LM85_REG_ALARM2 0x42
82 #define LM85_REG_VID 0x43
84 /* Automated FAN control */
85 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
86 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
87 #define LM85_REG_AFAN_SPIKE1 0x62
88 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
89 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
90 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
91 #define LM85_REG_AFAN_HYST1 0x6d
92 #define LM85_REG_AFAN_HYST2 0x6e
94 #define ADM1027_REG_EXTEND_ADC1 0x76
95 #define ADM1027_REG_EXTEND_ADC2 0x77
97 #define EMC6D100_REG_ALARM3 0x7d
98 /* IN5, IN6 and IN7 */
99 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
100 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
101 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
102 #define EMC6D102_REG_EXTEND_ADC1 0x85
103 #define EMC6D102_REG_EXTEND_ADC2 0x86
104 #define EMC6D102_REG_EXTEND_ADC3 0x87
105 #define EMC6D102_REG_EXTEND_ADC4 0x88
108 /* Conversions. Rounding and limit checking is only done on the TO_REG
109 variants. Note that you should be a bit careful with which arguments
110 these macros are called: arguments may be evaluated more than once.
113 /* IN are scaled acording to built-in resistors */
114 static const int lm85_scaling
[] = { /* .001 Volts */
115 2500, 2250, 3300, 5000, 12000,
116 3300, 1500, 1800 /*EMC6D100*/
118 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
120 #define INS_TO_REG(n, val) \
121 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
123 #define INSEXT_FROM_REG(n, val, ext) \
124 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
126 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
128 /* FAN speed is measured using 90kHz clock */
129 static inline u16
FAN_TO_REG(unsigned long val
)
133 return SENSORS_LIMIT(5400000 / val
, 1, 0xfffe);
135 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
138 /* Temperature is reported in .001 degC increments */
139 #define TEMP_TO_REG(val) \
140 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
141 #define TEMPEXT_FROM_REG(val, ext) \
142 SCALE(((val) << 4) + (ext), 16, 1000)
143 #define TEMP_FROM_REG(val) ((val) * 1000)
145 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
146 #define PWM_FROM_REG(val) (val)
149 /* ZONEs have the following parameters:
150 * Limit (low) temp, 1. degC
151 * Hysteresis (below limit), 1. degC (0-15)
152 * Range of speed control, .1 degC (2-80)
153 * Critical (high) temp, 1. degC
155 * FAN PWMs have the following parameters:
156 * Reference Zone, 1, 2, 3, etc.
157 * Spinup time, .05 sec
158 * PWM value at limit/low temp, 1 count
159 * PWM Frequency, 1. Hz
160 * PWM is Min or OFF below limit, flag
161 * Invert PWM output, flag
163 * Some chips filter the temp, others the fan.
164 * Filter constant (or disabled) .1 seconds
167 /* These are the zone temperature range encodings in .001 degree C */
168 static const int lm85_range_map
[] = {
169 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
170 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
173 static int RANGE_TO_REG(int range
)
177 /* Find the closest match */
178 for (i
= 0; i
< 15; ++i
) {
179 if (range
<= (lm85_range_map
[i
] + lm85_range_map
[i
+ 1]) / 2)
185 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
187 /* These are the PWM frequency encodings */
188 static const int lm85_freq_map
[8] = { /* 1 Hz */
189 10, 15, 23, 30, 38, 47, 61, 94
191 static const int adm1027_freq_map
[8] = { /* 1 Hz */
192 11, 15, 22, 29, 35, 44, 59, 88
195 static int FREQ_TO_REG(const int *map
, int freq
)
199 /* Find the closest match */
200 for (i
= 0; i
< 7; ++i
)
201 if (freq
<= (map
[i
] + map
[i
+ 1]) / 2)
206 static int FREQ_FROM_REG(const int *map
, u8 reg
)
208 return map
[reg
& 0x07];
211 /* Since we can't use strings, I'm abusing these numbers
212 * to stand in for the following meanings:
213 * 1 -- PWM responds to Zone 1
214 * 2 -- PWM responds to Zone 2
215 * 3 -- PWM responds to Zone 3
216 * 23 -- PWM responds to the higher temp of Zone 2 or 3
217 * 123 -- PWM responds to highest of Zone 1, 2, or 3
218 * 0 -- PWM is always at 0% (ie, off)
219 * -1 -- PWM is always at 100%
220 * -2 -- PWM responds to manual control
223 static const int lm85_zone_map
[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
224 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
226 static int ZONE_TO_REG(int zone
)
230 for (i
= 0; i
<= 7; ++i
)
231 if (zone
== lm85_zone_map
[i
])
233 if (i
> 7) /* Not found. */
234 i
= 3; /* Always 100% */
238 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
239 #define HYST_FROM_REG(val) ((val) * 1000)
241 /* Chip sampling rates
243 * Some sensors are not updated more frequently than once per second
244 * so it doesn't make sense to read them more often than that.
245 * We cache the results and return the saved data if the driver
246 * is called again before a second has elapsed.
248 * Also, there is significant configuration data for this chip
249 * given the automatic PWM fan control that is possible. There
250 * are about 47 bytes of config data to only 22 bytes of actual
251 * readings. So, we keep the config data up to date in the cache
252 * when it is written and only sample it once every 1 *minute*
254 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
255 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
257 /* LM85 can automatically adjust fan speeds based on temperature
258 * This structure encapsulates an entire Zone config. There are
259 * three zones (one for each temperature input) on the lm85
262 s8 limit
; /* Low temp limit */
263 u8 hyst
; /* Low limit hysteresis. (0-15) */
264 u8 range
; /* Temp range, encoded */
265 s8 critical
; /* "All fans ON" temp limit */
266 u8 off_desired
; /* Actual "off" temperature specified. Preserved
267 * to prevent "drift" as other autofan control
270 u8 max_desired
; /* Actual "max" temperature specified. Preserved
271 * to prevent "drift" as other autofan control
276 struct lm85_autofan
{
277 u8 config
; /* Register value */
278 u8 min_pwm
; /* Minimum PWM value, encoded */
279 u8 min_off
; /* Min PWM or OFF below "limit", flag */
282 /* For each registered chip, we need to keep some data in memory.
283 The structure is dynamically allocated. */
285 struct device
*hwmon_dev
;
289 struct mutex update_lock
;
290 int valid
; /* !=0 if following fields are valid */
291 unsigned long last_reading
; /* In jiffies */
292 unsigned long last_config
; /* In jiffies */
294 u8 in
[8]; /* Register value */
295 u8 in_max
[8]; /* Register value */
296 u8 in_min
[8]; /* Register value */
297 s8 temp
[3]; /* Register value */
298 s8 temp_min
[3]; /* Register value */
299 s8 temp_max
[3]; /* Register value */
300 u16 fan
[4]; /* Register value */
301 u16 fan_min
[4]; /* Register value */
302 u8 pwm
[3]; /* Register value */
303 u8 pwm_freq
[3]; /* Register encoding */
304 u8 temp_ext
[3]; /* Decoded values */
305 u8 in_ext
[8]; /* Decoded values */
306 u8 vid
; /* Register value */
307 u8 vrm
; /* VRM version */
308 u32 alarms
; /* Register encoding, combined */
309 struct lm85_autofan autofan
[3];
310 struct lm85_zone zone
[3];
313 static int lm85_detect(struct i2c_client
*client
, int kind
,
314 struct i2c_board_info
*info
);
315 static int lm85_probe(struct i2c_client
*client
,
316 const struct i2c_device_id
*id
);
317 static int lm85_remove(struct i2c_client
*client
);
319 static int lm85_read_value(struct i2c_client
*client
, u8 reg
);
320 static void lm85_write_value(struct i2c_client
*client
, u8 reg
, int value
);
321 static struct lm85_data
*lm85_update_device(struct device
*dev
);
324 static const struct i2c_device_id lm85_id
[] = {
325 { "adm1027", adm1027
},
326 { "adt7463", adt7463
},
327 { "lm85", any_chip
},
330 { "emc6d100", emc6d100
},
331 { "emc6d101", emc6d100
},
332 { "emc6d102", emc6d102
},
335 MODULE_DEVICE_TABLE(i2c
, lm85_id
);
337 static struct i2c_driver lm85_driver
= {
338 .class = I2C_CLASS_HWMON
,
343 .remove
= lm85_remove
,
345 .detect
= lm85_detect
,
346 .address_data
= &addr_data
,
351 static ssize_t
show_fan(struct device
*dev
, struct device_attribute
*attr
,
354 int nr
= to_sensor_dev_attr(attr
)->index
;
355 struct lm85_data
*data
= lm85_update_device(dev
);
356 return sprintf(buf
, "%d\n", FAN_FROM_REG(data
->fan
[nr
]));
359 static ssize_t
show_fan_min(struct device
*dev
, struct device_attribute
*attr
,
362 int nr
= to_sensor_dev_attr(attr
)->index
;
363 struct lm85_data
*data
= lm85_update_device(dev
);
364 return sprintf(buf
, "%d\n", FAN_FROM_REG(data
->fan_min
[nr
]));
367 static ssize_t
set_fan_min(struct device
*dev
, struct device_attribute
*attr
,
368 const char *buf
, size_t count
)
370 int nr
= to_sensor_dev_attr(attr
)->index
;
371 struct i2c_client
*client
= to_i2c_client(dev
);
372 struct lm85_data
*data
= i2c_get_clientdata(client
);
373 unsigned long val
= simple_strtoul(buf
, NULL
, 10);
375 mutex_lock(&data
->update_lock
);
376 data
->fan_min
[nr
] = FAN_TO_REG(val
);
377 lm85_write_value(client
, LM85_REG_FAN_MIN(nr
), data
->fan_min
[nr
]);
378 mutex_unlock(&data
->update_lock
);
382 #define show_fan_offset(offset) \
383 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
384 show_fan, NULL, offset - 1); \
385 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
386 show_fan_min, set_fan_min, offset - 1)
393 /* vid, vrm, alarms */
395 static ssize_t
show_vid_reg(struct device
*dev
, struct device_attribute
*attr
,
398 struct lm85_data
*data
= lm85_update_device(dev
);
401 if (data
->type
== adt7463
&& (data
->vid
& 0x80)) {
402 /* 6-pin VID (VRM 10) */
403 vid
= vid_from_reg(data
->vid
& 0x3f, data
->vrm
);
405 /* 5-pin VID (VRM 9) */
406 vid
= vid_from_reg(data
->vid
& 0x1f, data
->vrm
);
409 return sprintf(buf
, "%d\n", vid
);
412 static DEVICE_ATTR(cpu0_vid
, S_IRUGO
, show_vid_reg
, NULL
);
414 static ssize_t
show_vrm_reg(struct device
*dev
, struct device_attribute
*attr
,
417 struct lm85_data
*data
= dev_get_drvdata(dev
);
418 return sprintf(buf
, "%ld\n", (long) data
->vrm
);
421 static ssize_t
store_vrm_reg(struct device
*dev
, struct device_attribute
*attr
,
422 const char *buf
, size_t count
)
424 struct lm85_data
*data
= dev_get_drvdata(dev
);
425 data
->vrm
= simple_strtoul(buf
, NULL
, 10);
429 static DEVICE_ATTR(vrm
, S_IRUGO
| S_IWUSR
, show_vrm_reg
, store_vrm_reg
);
431 static ssize_t
show_alarms_reg(struct device
*dev
, struct device_attribute
434 struct lm85_data
*data
= lm85_update_device(dev
);
435 return sprintf(buf
, "%u\n", data
->alarms
);
438 static DEVICE_ATTR(alarms
, S_IRUGO
, show_alarms_reg
, NULL
);
440 static ssize_t
show_alarm(struct device
*dev
, struct device_attribute
*attr
,
443 int nr
= to_sensor_dev_attr(attr
)->index
;
444 struct lm85_data
*data
= lm85_update_device(dev
);
445 return sprintf(buf
, "%u\n", (data
->alarms
>> nr
) & 1);
448 static SENSOR_DEVICE_ATTR(in0_alarm
, S_IRUGO
, show_alarm
, NULL
, 0);
449 static SENSOR_DEVICE_ATTR(in1_alarm
, S_IRUGO
, show_alarm
, NULL
, 1);
450 static SENSOR_DEVICE_ATTR(in2_alarm
, S_IRUGO
, show_alarm
, NULL
, 2);
451 static SENSOR_DEVICE_ATTR(in3_alarm
, S_IRUGO
, show_alarm
, NULL
, 3);
452 static SENSOR_DEVICE_ATTR(in4_alarm
, S_IRUGO
, show_alarm
, NULL
, 8);
453 static SENSOR_DEVICE_ATTR(in5_alarm
, S_IRUGO
, show_alarm
, NULL
, 18);
454 static SENSOR_DEVICE_ATTR(in6_alarm
, S_IRUGO
, show_alarm
, NULL
, 16);
455 static SENSOR_DEVICE_ATTR(in7_alarm
, S_IRUGO
, show_alarm
, NULL
, 17);
456 static SENSOR_DEVICE_ATTR(temp1_alarm
, S_IRUGO
, show_alarm
, NULL
, 4);
457 static SENSOR_DEVICE_ATTR(temp1_fault
, S_IRUGO
, show_alarm
, NULL
, 14);
458 static SENSOR_DEVICE_ATTR(temp2_alarm
, S_IRUGO
, show_alarm
, NULL
, 5);
459 static SENSOR_DEVICE_ATTR(temp3_alarm
, S_IRUGO
, show_alarm
, NULL
, 6);
460 static SENSOR_DEVICE_ATTR(temp3_fault
, S_IRUGO
, show_alarm
, NULL
, 15);
461 static SENSOR_DEVICE_ATTR(fan1_alarm
, S_IRUGO
, show_alarm
, NULL
, 10);
462 static SENSOR_DEVICE_ATTR(fan2_alarm
, S_IRUGO
, show_alarm
, NULL
, 11);
463 static SENSOR_DEVICE_ATTR(fan3_alarm
, S_IRUGO
, show_alarm
, NULL
, 12);
464 static SENSOR_DEVICE_ATTR(fan4_alarm
, S_IRUGO
, show_alarm
, NULL
, 13);
468 static ssize_t
show_pwm(struct device
*dev
, struct device_attribute
*attr
,
471 int nr
= to_sensor_dev_attr(attr
)->index
;
472 struct lm85_data
*data
= lm85_update_device(dev
);
473 return sprintf(buf
, "%d\n", PWM_FROM_REG(data
->pwm
[nr
]));
476 static ssize_t
set_pwm(struct device
*dev
, struct device_attribute
*attr
,
477 const char *buf
, size_t count
)
479 int nr
= to_sensor_dev_attr(attr
)->index
;
480 struct i2c_client
*client
= to_i2c_client(dev
);
481 struct lm85_data
*data
= i2c_get_clientdata(client
);
482 long val
= simple_strtol(buf
, NULL
, 10);
484 mutex_lock(&data
->update_lock
);
485 data
->pwm
[nr
] = PWM_TO_REG(val
);
486 lm85_write_value(client
, LM85_REG_PWM(nr
), data
->pwm
[nr
]);
487 mutex_unlock(&data
->update_lock
);
491 static ssize_t
show_pwm_enable(struct device
*dev
, struct device_attribute
494 int nr
= to_sensor_dev_attr(attr
)->index
;
495 struct lm85_data
*data
= lm85_update_device(dev
);
496 int pwm_zone
, enable
;
498 pwm_zone
= ZONE_FROM_REG(data
->autofan
[nr
].config
);
500 case -1: /* PWM is always at 100% */
503 case 0: /* PWM is always at 0% */
504 case -2: /* PWM responds to manual control */
507 default: /* PWM in automatic mode */
510 return sprintf(buf
, "%d\n", enable
);
513 static ssize_t
set_pwm_enable(struct device
*dev
, struct device_attribute
514 *attr
, const char *buf
, size_t count
)
516 int nr
= to_sensor_dev_attr(attr
)->index
;
517 struct i2c_client
*client
= to_i2c_client(dev
);
518 struct lm85_data
*data
= i2c_get_clientdata(client
);
519 long val
= simple_strtol(buf
, NULL
, 10);
530 /* Here we have to choose arbitrarily one of the 5 possible
531 configurations; I go for the safest */
538 mutex_lock(&data
->update_lock
);
539 data
->autofan
[nr
].config
= lm85_read_value(client
,
540 LM85_REG_AFAN_CONFIG(nr
));
541 data
->autofan
[nr
].config
= (data
->autofan
[nr
].config
& ~0xe0)
543 lm85_write_value(client
, LM85_REG_AFAN_CONFIG(nr
),
544 data
->autofan
[nr
].config
);
545 mutex_unlock(&data
->update_lock
);
549 static ssize_t
show_pwm_freq(struct device
*dev
,
550 struct device_attribute
*attr
, char *buf
)
552 int nr
= to_sensor_dev_attr(attr
)->index
;
553 struct lm85_data
*data
= lm85_update_device(dev
);
554 return sprintf(buf
, "%d\n", FREQ_FROM_REG(data
->freq_map
,
555 data
->pwm_freq
[nr
]));
558 static ssize_t
set_pwm_freq(struct device
*dev
,
559 struct device_attribute
*attr
, const char *buf
, size_t count
)
561 int nr
= to_sensor_dev_attr(attr
)->index
;
562 struct i2c_client
*client
= to_i2c_client(dev
);
563 struct lm85_data
*data
= i2c_get_clientdata(client
);
564 long val
= simple_strtol(buf
, NULL
, 10);
566 mutex_lock(&data
->update_lock
);
567 data
->pwm_freq
[nr
] = FREQ_TO_REG(data
->freq_map
, val
);
568 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
569 (data
->zone
[nr
].range
<< 4)
570 | data
->pwm_freq
[nr
]);
571 mutex_unlock(&data
->update_lock
);
575 #define show_pwm_reg(offset) \
576 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
577 show_pwm, set_pwm, offset - 1); \
578 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
579 show_pwm_enable, set_pwm_enable, offset - 1); \
580 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
581 show_pwm_freq, set_pwm_freq, offset - 1)
589 static ssize_t
show_in(struct device
*dev
, struct device_attribute
*attr
,
592 int nr
= to_sensor_dev_attr(attr
)->index
;
593 struct lm85_data
*data
= lm85_update_device(dev
);
594 return sprintf(buf
, "%d\n", INSEXT_FROM_REG(nr
, data
->in
[nr
],
598 static ssize_t
show_in_min(struct device
*dev
, struct device_attribute
*attr
,
601 int nr
= to_sensor_dev_attr(attr
)->index
;
602 struct lm85_data
*data
= lm85_update_device(dev
);
603 return sprintf(buf
, "%d\n", INS_FROM_REG(nr
, data
->in_min
[nr
]));
606 static ssize_t
set_in_min(struct device
*dev
, struct device_attribute
*attr
,
607 const char *buf
, size_t count
)
609 int nr
= to_sensor_dev_attr(attr
)->index
;
610 struct i2c_client
*client
= to_i2c_client(dev
);
611 struct lm85_data
*data
= i2c_get_clientdata(client
);
612 long val
= simple_strtol(buf
, NULL
, 10);
614 mutex_lock(&data
->update_lock
);
615 data
->in_min
[nr
] = INS_TO_REG(nr
, val
);
616 lm85_write_value(client
, LM85_REG_IN_MIN(nr
), data
->in_min
[nr
]);
617 mutex_unlock(&data
->update_lock
);
621 static ssize_t
show_in_max(struct device
*dev
, struct device_attribute
*attr
,
624 int nr
= to_sensor_dev_attr(attr
)->index
;
625 struct lm85_data
*data
= lm85_update_device(dev
);
626 return sprintf(buf
, "%d\n", INS_FROM_REG(nr
, data
->in_max
[nr
]));
629 static ssize_t
set_in_max(struct device
*dev
, struct device_attribute
*attr
,
630 const char *buf
, size_t count
)
632 int nr
= to_sensor_dev_attr(attr
)->index
;
633 struct i2c_client
*client
= to_i2c_client(dev
);
634 struct lm85_data
*data
= i2c_get_clientdata(client
);
635 long val
= simple_strtol(buf
, NULL
, 10);
637 mutex_lock(&data
->update_lock
);
638 data
->in_max
[nr
] = INS_TO_REG(nr
, val
);
639 lm85_write_value(client
, LM85_REG_IN_MAX(nr
), data
->in_max
[nr
]);
640 mutex_unlock(&data
->update_lock
);
644 #define show_in_reg(offset) \
645 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
646 show_in, NULL, offset); \
647 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
648 show_in_min, set_in_min, offset); \
649 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
650 show_in_max, set_in_max, offset)
663 static ssize_t
show_temp(struct device
*dev
, struct device_attribute
*attr
,
666 int nr
= to_sensor_dev_attr(attr
)->index
;
667 struct lm85_data
*data
= lm85_update_device(dev
);
668 return sprintf(buf
, "%d\n", TEMPEXT_FROM_REG(data
->temp
[nr
],
669 data
->temp_ext
[nr
]));
672 static ssize_t
show_temp_min(struct device
*dev
, struct device_attribute
*attr
,
675 int nr
= to_sensor_dev_attr(attr
)->index
;
676 struct lm85_data
*data
= lm85_update_device(dev
);
677 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_min
[nr
]));
680 static ssize_t
set_temp_min(struct device
*dev
, struct device_attribute
*attr
,
681 const char *buf
, size_t count
)
683 int nr
= to_sensor_dev_attr(attr
)->index
;
684 struct i2c_client
*client
= to_i2c_client(dev
);
685 struct lm85_data
*data
= i2c_get_clientdata(client
);
686 long val
= simple_strtol(buf
, NULL
, 10);
688 mutex_lock(&data
->update_lock
);
689 data
->temp_min
[nr
] = TEMP_TO_REG(val
);
690 lm85_write_value(client
, LM85_REG_TEMP_MIN(nr
), data
->temp_min
[nr
]);
691 mutex_unlock(&data
->update_lock
);
695 static ssize_t
show_temp_max(struct device
*dev
, struct device_attribute
*attr
,
698 int nr
= to_sensor_dev_attr(attr
)->index
;
699 struct lm85_data
*data
= lm85_update_device(dev
);
700 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_max
[nr
]));
703 static ssize_t
set_temp_max(struct device
*dev
, struct device_attribute
*attr
,
704 const char *buf
, size_t count
)
706 int nr
= to_sensor_dev_attr(attr
)->index
;
707 struct i2c_client
*client
= to_i2c_client(dev
);
708 struct lm85_data
*data
= i2c_get_clientdata(client
);
709 long val
= simple_strtol(buf
, NULL
, 10);
711 mutex_lock(&data
->update_lock
);
712 data
->temp_max
[nr
] = TEMP_TO_REG(val
);
713 lm85_write_value(client
, LM85_REG_TEMP_MAX(nr
), data
->temp_max
[nr
]);
714 mutex_unlock(&data
->update_lock
);
718 #define show_temp_reg(offset) \
719 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
720 show_temp, NULL, offset - 1); \
721 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
722 show_temp_min, set_temp_min, offset - 1); \
723 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
724 show_temp_max, set_temp_max, offset - 1);
731 /* Automatic PWM control */
733 static ssize_t
show_pwm_auto_channels(struct device
*dev
,
734 struct device_attribute
*attr
, char *buf
)
736 int nr
= to_sensor_dev_attr(attr
)->index
;
737 struct lm85_data
*data
= lm85_update_device(dev
);
738 return sprintf(buf
, "%d\n", ZONE_FROM_REG(data
->autofan
[nr
].config
));
741 static ssize_t
set_pwm_auto_channels(struct device
*dev
,
742 struct device_attribute
*attr
, const char *buf
, size_t count
)
744 int nr
= to_sensor_dev_attr(attr
)->index
;
745 struct i2c_client
*client
= to_i2c_client(dev
);
746 struct lm85_data
*data
= i2c_get_clientdata(client
);
747 long val
= simple_strtol(buf
, NULL
, 10);
749 mutex_lock(&data
->update_lock
);
750 data
->autofan
[nr
].config
= (data
->autofan
[nr
].config
& (~0xe0))
752 lm85_write_value(client
, LM85_REG_AFAN_CONFIG(nr
),
753 data
->autofan
[nr
].config
);
754 mutex_unlock(&data
->update_lock
);
758 static ssize_t
show_pwm_auto_pwm_min(struct device
*dev
,
759 struct device_attribute
*attr
, char *buf
)
761 int nr
= to_sensor_dev_attr(attr
)->index
;
762 struct lm85_data
*data
= lm85_update_device(dev
);
763 return sprintf(buf
, "%d\n", PWM_FROM_REG(data
->autofan
[nr
].min_pwm
));
766 static ssize_t
set_pwm_auto_pwm_min(struct device
*dev
,
767 struct device_attribute
*attr
, const char *buf
, size_t count
)
769 int nr
= to_sensor_dev_attr(attr
)->index
;
770 struct i2c_client
*client
= to_i2c_client(dev
);
771 struct lm85_data
*data
= i2c_get_clientdata(client
);
772 long val
= simple_strtol(buf
, NULL
, 10);
774 mutex_lock(&data
->update_lock
);
775 data
->autofan
[nr
].min_pwm
= PWM_TO_REG(val
);
776 lm85_write_value(client
, LM85_REG_AFAN_MINPWM(nr
),
777 data
->autofan
[nr
].min_pwm
);
778 mutex_unlock(&data
->update_lock
);
782 static ssize_t
show_pwm_auto_pwm_minctl(struct device
*dev
,
783 struct device_attribute
*attr
, char *buf
)
785 int nr
= to_sensor_dev_attr(attr
)->index
;
786 struct lm85_data
*data
= lm85_update_device(dev
);
787 return sprintf(buf
, "%d\n", data
->autofan
[nr
].min_off
);
790 static ssize_t
set_pwm_auto_pwm_minctl(struct device
*dev
,
791 struct device_attribute
*attr
, const char *buf
, size_t count
)
793 int nr
= to_sensor_dev_attr(attr
)->index
;
794 struct i2c_client
*client
= to_i2c_client(dev
);
795 struct lm85_data
*data
= i2c_get_clientdata(client
);
796 long val
= simple_strtol(buf
, NULL
, 10);
799 mutex_lock(&data
->update_lock
);
800 data
->autofan
[nr
].min_off
= val
;
801 tmp
= lm85_read_value(client
, LM85_REG_AFAN_SPIKE1
);
802 tmp
&= ~(0x20 << nr
);
803 if (data
->autofan
[nr
].min_off
)
805 lm85_write_value(client
, LM85_REG_AFAN_SPIKE1
, tmp
);
806 mutex_unlock(&data
->update_lock
);
810 #define pwm_auto(offset) \
811 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
812 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
813 set_pwm_auto_channels, offset - 1); \
814 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
815 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
816 set_pwm_auto_pwm_min, offset - 1); \
817 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
818 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
819 set_pwm_auto_pwm_minctl, offset - 1)
825 /* Temperature settings for automatic PWM control */
827 static ssize_t
show_temp_auto_temp_off(struct device
*dev
,
828 struct device_attribute
*attr
, char *buf
)
830 int nr
= to_sensor_dev_attr(attr
)->index
;
831 struct lm85_data
*data
= lm85_update_device(dev
);
832 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
) -
833 HYST_FROM_REG(data
->zone
[nr
].hyst
));
836 static ssize_t
set_temp_auto_temp_off(struct device
*dev
,
837 struct device_attribute
*attr
, const char *buf
, size_t count
)
839 int nr
= to_sensor_dev_attr(attr
)->index
;
840 struct i2c_client
*client
= to_i2c_client(dev
);
841 struct lm85_data
*data
= i2c_get_clientdata(client
);
843 long val
= simple_strtol(buf
, NULL
, 10);
845 mutex_lock(&data
->update_lock
);
846 min
= TEMP_FROM_REG(data
->zone
[nr
].limit
);
847 data
->zone
[nr
].off_desired
= TEMP_TO_REG(val
);
848 data
->zone
[nr
].hyst
= HYST_TO_REG(min
- val
);
849 if (nr
== 0 || nr
== 1) {
850 lm85_write_value(client
, LM85_REG_AFAN_HYST1
,
851 (data
->zone
[0].hyst
<< 4)
852 | data
->zone
[1].hyst
);
854 lm85_write_value(client
, LM85_REG_AFAN_HYST2
,
855 (data
->zone
[2].hyst
<< 4));
857 mutex_unlock(&data
->update_lock
);
861 static ssize_t
show_temp_auto_temp_min(struct device
*dev
,
862 struct device_attribute
*attr
, char *buf
)
864 int nr
= to_sensor_dev_attr(attr
)->index
;
865 struct lm85_data
*data
= lm85_update_device(dev
);
866 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
));
869 static ssize_t
set_temp_auto_temp_min(struct device
*dev
,
870 struct device_attribute
*attr
, const char *buf
, size_t count
)
872 int nr
= to_sensor_dev_attr(attr
)->index
;
873 struct i2c_client
*client
= to_i2c_client(dev
);
874 struct lm85_data
*data
= i2c_get_clientdata(client
);
875 long val
= simple_strtol(buf
, NULL
, 10);
877 mutex_lock(&data
->update_lock
);
878 data
->zone
[nr
].limit
= TEMP_TO_REG(val
);
879 lm85_write_value(client
, LM85_REG_AFAN_LIMIT(nr
),
880 data
->zone
[nr
].limit
);
882 /* Update temp_auto_max and temp_auto_range */
883 data
->zone
[nr
].range
= RANGE_TO_REG(
884 TEMP_FROM_REG(data
->zone
[nr
].max_desired
) -
885 TEMP_FROM_REG(data
->zone
[nr
].limit
));
886 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
887 ((data
->zone
[nr
].range
& 0x0f) << 4)
888 | (data
->pwm_freq
[nr
] & 0x07));
890 /* Update temp_auto_hyst and temp_auto_off */
891 data
->zone
[nr
].hyst
= HYST_TO_REG(TEMP_FROM_REG(
892 data
->zone
[nr
].limit
) - TEMP_FROM_REG(
893 data
->zone
[nr
].off_desired
));
894 if (nr
== 0 || nr
== 1) {
895 lm85_write_value(client
, LM85_REG_AFAN_HYST1
,
896 (data
->zone
[0].hyst
<< 4)
897 | data
->zone
[1].hyst
);
899 lm85_write_value(client
, LM85_REG_AFAN_HYST2
,
900 (data
->zone
[2].hyst
<< 4));
902 mutex_unlock(&data
->update_lock
);
906 static ssize_t
show_temp_auto_temp_max(struct device
*dev
,
907 struct device_attribute
*attr
, char *buf
)
909 int nr
= to_sensor_dev_attr(attr
)->index
;
910 struct lm85_data
*data
= lm85_update_device(dev
);
911 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
) +
912 RANGE_FROM_REG(data
->zone
[nr
].range
));
915 static ssize_t
set_temp_auto_temp_max(struct device
*dev
,
916 struct device_attribute
*attr
, const char *buf
, size_t count
)
918 int nr
= to_sensor_dev_attr(attr
)->index
;
919 struct i2c_client
*client
= to_i2c_client(dev
);
920 struct lm85_data
*data
= i2c_get_clientdata(client
);
922 long val
= simple_strtol(buf
, NULL
, 10);
924 mutex_lock(&data
->update_lock
);
925 min
= TEMP_FROM_REG(data
->zone
[nr
].limit
);
926 data
->zone
[nr
].max_desired
= TEMP_TO_REG(val
);
927 data
->zone
[nr
].range
= RANGE_TO_REG(
929 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
930 ((data
->zone
[nr
].range
& 0x0f) << 4)
931 | (data
->pwm_freq
[nr
] & 0x07));
932 mutex_unlock(&data
->update_lock
);
936 static ssize_t
show_temp_auto_temp_crit(struct device
*dev
,
937 struct device_attribute
*attr
, char *buf
)
939 int nr
= to_sensor_dev_attr(attr
)->index
;
940 struct lm85_data
*data
= lm85_update_device(dev
);
941 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].critical
));
944 static ssize_t
set_temp_auto_temp_crit(struct device
*dev
,
945 struct device_attribute
*attr
, const char *buf
, size_t count
)
947 int nr
= to_sensor_dev_attr(attr
)->index
;
948 struct i2c_client
*client
= to_i2c_client(dev
);
949 struct lm85_data
*data
= i2c_get_clientdata(client
);
950 long val
= simple_strtol(buf
, NULL
, 10);
952 mutex_lock(&data
->update_lock
);
953 data
->zone
[nr
].critical
= TEMP_TO_REG(val
);
954 lm85_write_value(client
, LM85_REG_AFAN_CRITICAL(nr
),
955 data
->zone
[nr
].critical
);
956 mutex_unlock(&data
->update_lock
);
960 #define temp_auto(offset) \
961 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
962 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
963 set_temp_auto_temp_off, offset - 1); \
964 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
965 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
966 set_temp_auto_temp_min, offset - 1); \
967 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
968 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
969 set_temp_auto_temp_max, offset - 1); \
970 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
971 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
972 set_temp_auto_temp_crit, offset - 1);
978 static struct attribute
*lm85_attributes
[] = {
979 &sensor_dev_attr_fan1_input
.dev_attr
.attr
,
980 &sensor_dev_attr_fan2_input
.dev_attr
.attr
,
981 &sensor_dev_attr_fan3_input
.dev_attr
.attr
,
982 &sensor_dev_attr_fan4_input
.dev_attr
.attr
,
983 &sensor_dev_attr_fan1_min
.dev_attr
.attr
,
984 &sensor_dev_attr_fan2_min
.dev_attr
.attr
,
985 &sensor_dev_attr_fan3_min
.dev_attr
.attr
,
986 &sensor_dev_attr_fan4_min
.dev_attr
.attr
,
987 &sensor_dev_attr_fan1_alarm
.dev_attr
.attr
,
988 &sensor_dev_attr_fan2_alarm
.dev_attr
.attr
,
989 &sensor_dev_attr_fan3_alarm
.dev_attr
.attr
,
990 &sensor_dev_attr_fan4_alarm
.dev_attr
.attr
,
992 &sensor_dev_attr_pwm1
.dev_attr
.attr
,
993 &sensor_dev_attr_pwm2
.dev_attr
.attr
,
994 &sensor_dev_attr_pwm3
.dev_attr
.attr
,
995 &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
,
996 &sensor_dev_attr_pwm2_enable
.dev_attr
.attr
,
997 &sensor_dev_attr_pwm3_enable
.dev_attr
.attr
,
998 &sensor_dev_attr_pwm1_freq
.dev_attr
.attr
,
999 &sensor_dev_attr_pwm2_freq
.dev_attr
.attr
,
1000 &sensor_dev_attr_pwm3_freq
.dev_attr
.attr
,
1002 &sensor_dev_attr_in0_input
.dev_attr
.attr
,
1003 &sensor_dev_attr_in1_input
.dev_attr
.attr
,
1004 &sensor_dev_attr_in2_input
.dev_attr
.attr
,
1005 &sensor_dev_attr_in3_input
.dev_attr
.attr
,
1006 &sensor_dev_attr_in0_min
.dev_attr
.attr
,
1007 &sensor_dev_attr_in1_min
.dev_attr
.attr
,
1008 &sensor_dev_attr_in2_min
.dev_attr
.attr
,
1009 &sensor_dev_attr_in3_min
.dev_attr
.attr
,
1010 &sensor_dev_attr_in0_max
.dev_attr
.attr
,
1011 &sensor_dev_attr_in1_max
.dev_attr
.attr
,
1012 &sensor_dev_attr_in2_max
.dev_attr
.attr
,
1013 &sensor_dev_attr_in3_max
.dev_attr
.attr
,
1014 &sensor_dev_attr_in0_alarm
.dev_attr
.attr
,
1015 &sensor_dev_attr_in1_alarm
.dev_attr
.attr
,
1016 &sensor_dev_attr_in2_alarm
.dev_attr
.attr
,
1017 &sensor_dev_attr_in3_alarm
.dev_attr
.attr
,
1019 &sensor_dev_attr_temp1_input
.dev_attr
.attr
,
1020 &sensor_dev_attr_temp2_input
.dev_attr
.attr
,
1021 &sensor_dev_attr_temp3_input
.dev_attr
.attr
,
1022 &sensor_dev_attr_temp1_min
.dev_attr
.attr
,
1023 &sensor_dev_attr_temp2_min
.dev_attr
.attr
,
1024 &sensor_dev_attr_temp3_min
.dev_attr
.attr
,
1025 &sensor_dev_attr_temp1_max
.dev_attr
.attr
,
1026 &sensor_dev_attr_temp2_max
.dev_attr
.attr
,
1027 &sensor_dev_attr_temp3_max
.dev_attr
.attr
,
1028 &sensor_dev_attr_temp1_alarm
.dev_attr
.attr
,
1029 &sensor_dev_attr_temp2_alarm
.dev_attr
.attr
,
1030 &sensor_dev_attr_temp3_alarm
.dev_attr
.attr
,
1031 &sensor_dev_attr_temp1_fault
.dev_attr
.attr
,
1032 &sensor_dev_attr_temp3_fault
.dev_attr
.attr
,
1034 &sensor_dev_attr_pwm1_auto_channels
.dev_attr
.attr
,
1035 &sensor_dev_attr_pwm2_auto_channels
.dev_attr
.attr
,
1036 &sensor_dev_attr_pwm3_auto_channels
.dev_attr
.attr
,
1037 &sensor_dev_attr_pwm1_auto_pwm_min
.dev_attr
.attr
,
1038 &sensor_dev_attr_pwm2_auto_pwm_min
.dev_attr
.attr
,
1039 &sensor_dev_attr_pwm3_auto_pwm_min
.dev_attr
.attr
,
1040 &sensor_dev_attr_pwm1_auto_pwm_minctl
.dev_attr
.attr
,
1041 &sensor_dev_attr_pwm2_auto_pwm_minctl
.dev_attr
.attr
,
1042 &sensor_dev_attr_pwm3_auto_pwm_minctl
.dev_attr
.attr
,
1044 &sensor_dev_attr_temp1_auto_temp_off
.dev_attr
.attr
,
1045 &sensor_dev_attr_temp2_auto_temp_off
.dev_attr
.attr
,
1046 &sensor_dev_attr_temp3_auto_temp_off
.dev_attr
.attr
,
1047 &sensor_dev_attr_temp1_auto_temp_min
.dev_attr
.attr
,
1048 &sensor_dev_attr_temp2_auto_temp_min
.dev_attr
.attr
,
1049 &sensor_dev_attr_temp3_auto_temp_min
.dev_attr
.attr
,
1050 &sensor_dev_attr_temp1_auto_temp_max
.dev_attr
.attr
,
1051 &sensor_dev_attr_temp2_auto_temp_max
.dev_attr
.attr
,
1052 &sensor_dev_attr_temp3_auto_temp_max
.dev_attr
.attr
,
1053 &sensor_dev_attr_temp1_auto_temp_crit
.dev_attr
.attr
,
1054 &sensor_dev_attr_temp2_auto_temp_crit
.dev_attr
.attr
,
1055 &sensor_dev_attr_temp3_auto_temp_crit
.dev_attr
.attr
,
1058 &dev_attr_cpu0_vid
.attr
,
1059 &dev_attr_alarms
.attr
,
1063 static const struct attribute_group lm85_group
= {
1064 .attrs
= lm85_attributes
,
1067 static struct attribute
*lm85_attributes_in4
[] = {
1068 &sensor_dev_attr_in4_input
.dev_attr
.attr
,
1069 &sensor_dev_attr_in4_min
.dev_attr
.attr
,
1070 &sensor_dev_attr_in4_max
.dev_attr
.attr
,
1071 &sensor_dev_attr_in4_alarm
.dev_attr
.attr
,
1075 static const struct attribute_group lm85_group_in4
= {
1076 .attrs
= lm85_attributes_in4
,
1079 static struct attribute
*lm85_attributes_in567
[] = {
1080 &sensor_dev_attr_in5_input
.dev_attr
.attr
,
1081 &sensor_dev_attr_in6_input
.dev_attr
.attr
,
1082 &sensor_dev_attr_in7_input
.dev_attr
.attr
,
1083 &sensor_dev_attr_in5_min
.dev_attr
.attr
,
1084 &sensor_dev_attr_in6_min
.dev_attr
.attr
,
1085 &sensor_dev_attr_in7_min
.dev_attr
.attr
,
1086 &sensor_dev_attr_in5_max
.dev_attr
.attr
,
1087 &sensor_dev_attr_in6_max
.dev_attr
.attr
,
1088 &sensor_dev_attr_in7_max
.dev_attr
.attr
,
1089 &sensor_dev_attr_in5_alarm
.dev_attr
.attr
,
1090 &sensor_dev_attr_in6_alarm
.dev_attr
.attr
,
1091 &sensor_dev_attr_in7_alarm
.dev_attr
.attr
,
1095 static const struct attribute_group lm85_group_in567
= {
1096 .attrs
= lm85_attributes_in567
,
1099 static void lm85_init_client(struct i2c_client
*client
)
1103 /* Start monitoring if needed */
1104 value
= lm85_read_value(client
, LM85_REG_CONFIG
);
1105 if (!(value
& 0x01)) {
1106 dev_info(&client
->dev
, "Starting monitoring\n");
1107 lm85_write_value(client
, LM85_REG_CONFIG
, value
| 0x01);
1110 /* Warn about unusual configuration bits */
1112 dev_warn(&client
->dev
, "Device configuration is locked\n");
1113 if (!(value
& 0x04))
1114 dev_warn(&client
->dev
, "Device is not ready\n");
1117 /* Return 0 if detection is successful, -ENODEV otherwise */
1118 static int lm85_detect(struct i2c_client
*client
, int kind
,
1119 struct i2c_board_info
*info
)
1121 struct i2c_adapter
*adapter
= client
->adapter
;
1122 int address
= client
->addr
;
1123 const char *type_name
;
1125 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
)) {
1126 /* We need to be able to do byte I/O */
1130 /* If auto-detecting, determine the chip type */
1132 int company
= lm85_read_value(client
, LM85_REG_COMPANY
);
1133 int verstep
= lm85_read_value(client
, LM85_REG_VERSTEP
);
1135 dev_dbg(&adapter
->dev
, "Detecting device at 0x%02x with "
1136 "COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1137 address
, company
, verstep
);
1139 /* All supported chips have the version in common */
1140 if ((verstep
& LM85_VERSTEP_VMASK
) != LM85_VERSTEP_GENERIC
) {
1141 dev_dbg(&adapter
->dev
, "Autodetection failed: "
1142 "unsupported version\n");
1147 /* Now, refine the detection */
1148 if (company
== LM85_COMPANY_NATIONAL
) {
1150 case LM85_VERSTEP_LM85C
:
1153 case LM85_VERSTEP_LM85B
:
1157 } else if (company
== LM85_COMPANY_ANALOG_DEV
) {
1159 case LM85_VERSTEP_ADM1027
:
1162 case LM85_VERSTEP_ADT7463
:
1163 case LM85_VERSTEP_ADT7463C
:
1167 } else if (company
== LM85_COMPANY_SMSC
) {
1169 case LM85_VERSTEP_EMC6D100_A0
:
1170 case LM85_VERSTEP_EMC6D100_A1
:
1171 /* Note: we can't tell a '100 from a '101 */
1174 case LM85_VERSTEP_EMC6D102
:
1179 dev_dbg(&adapter
->dev
, "Autodetection failed: "
1180 "unknown vendor\n");
1187 type_name
= "lm85b";
1190 type_name
= "lm85c";
1193 type_name
= "adm1027";
1196 type_name
= "adt7463";
1199 type_name
= "emc6d100";
1202 type_name
= "emc6d102";
1207 strlcpy(info
->type
, type_name
, I2C_NAME_SIZE
);
1212 static int lm85_probe(struct i2c_client
*client
,
1213 const struct i2c_device_id
*id
)
1215 struct lm85_data
*data
;
1218 data
= kzalloc(sizeof(struct lm85_data
), GFP_KERNEL
);
1222 i2c_set_clientdata(client
, data
);
1223 data
->type
= id
->driver_data
;
1224 mutex_init(&data
->update_lock
);
1226 /* Fill in the chip specific driver values */
1227 switch (data
->type
) {
1232 data
->freq_map
= adm1027_freq_map
;
1235 data
->freq_map
= lm85_freq_map
;
1238 /* Set the VRM version */
1239 data
->vrm
= vid_which_vrm();
1241 /* Initialize the LM85 chip */
1242 lm85_init_client(client
);
1244 /* Register sysfs hooks */
1245 err
= sysfs_create_group(&client
->dev
.kobj
, &lm85_group
);
1249 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1250 as a sixth digital VID input rather than an analog input. */
1251 data
->vid
= lm85_read_value(client
, LM85_REG_VID
);
1252 if (!(data
->type
== adt7463
&& (data
->vid
& 0x80)))
1253 if ((err
= sysfs_create_group(&client
->dev
.kobj
,
1255 goto err_remove_files
;
1257 /* The EMC6D100 has 3 additional voltage inputs */
1258 if (data
->type
== emc6d100
)
1259 if ((err
= sysfs_create_group(&client
->dev
.kobj
,
1260 &lm85_group_in567
)))
1261 goto err_remove_files
;
1263 data
->hwmon_dev
= hwmon_device_register(&client
->dev
);
1264 if (IS_ERR(data
->hwmon_dev
)) {
1265 err
= PTR_ERR(data
->hwmon_dev
);
1266 goto err_remove_files
;
1271 /* Error out and cleanup code */
1273 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group
);
1274 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group_in4
);
1275 if (data
->type
== emc6d100
)
1276 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group_in567
);
1282 static int lm85_remove(struct i2c_client
*client
)
1284 struct lm85_data
*data
= i2c_get_clientdata(client
);
1285 hwmon_device_unregister(data
->hwmon_dev
);
1286 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group
);
1287 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group_in4
);
1288 if (data
->type
== emc6d100
)
1289 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group_in567
);
1295 static int lm85_read_value(struct i2c_client
*client
, u8 reg
)
1299 /* What size location is it? */
1301 case LM85_REG_FAN(0): /* Read WORD data */
1302 case LM85_REG_FAN(1):
1303 case LM85_REG_FAN(2):
1304 case LM85_REG_FAN(3):
1305 case LM85_REG_FAN_MIN(0):
1306 case LM85_REG_FAN_MIN(1):
1307 case LM85_REG_FAN_MIN(2):
1308 case LM85_REG_FAN_MIN(3):
1309 case LM85_REG_ALARM1
: /* Read both bytes at once */
1310 res
= i2c_smbus_read_byte_data(client
, reg
) & 0xff;
1311 res
|= i2c_smbus_read_byte_data(client
, reg
+ 1) << 8;
1313 default: /* Read BYTE data */
1314 res
= i2c_smbus_read_byte_data(client
, reg
);
1321 static void lm85_write_value(struct i2c_client
*client
, u8 reg
, int value
)
1324 case LM85_REG_FAN(0): /* Write WORD data */
1325 case LM85_REG_FAN(1):
1326 case LM85_REG_FAN(2):
1327 case LM85_REG_FAN(3):
1328 case LM85_REG_FAN_MIN(0):
1329 case LM85_REG_FAN_MIN(1):
1330 case LM85_REG_FAN_MIN(2):
1331 case LM85_REG_FAN_MIN(3):
1332 /* NOTE: ALARM is read only, so not included here */
1333 i2c_smbus_write_byte_data(client
, reg
, value
& 0xff);
1334 i2c_smbus_write_byte_data(client
, reg
+ 1, value
>> 8);
1336 default: /* Write BYTE data */
1337 i2c_smbus_write_byte_data(client
, reg
, value
);
1342 static struct lm85_data
*lm85_update_device(struct device
*dev
)
1344 struct i2c_client
*client
= to_i2c_client(dev
);
1345 struct lm85_data
*data
= i2c_get_clientdata(client
);
1348 mutex_lock(&data
->update_lock
);
1351 time_after(jiffies
, data
->last_reading
+ LM85_DATA_INTERVAL
)) {
1352 /* Things that change quickly */
1353 dev_dbg(&client
->dev
, "Reading sensor values\n");
1355 /* Have to read extended bits first to "freeze" the
1356 * more significant bits that are read later.
1357 * There are 2 additional resolution bits per channel and we
1358 * have room for 4, so we shift them to the left.
1360 if (data
->type
== adm1027
|| data
->type
== adt7463
) {
1361 int ext1
= lm85_read_value(client
,
1362 ADM1027_REG_EXTEND_ADC1
);
1363 int ext2
= lm85_read_value(client
,
1364 ADM1027_REG_EXTEND_ADC2
);
1365 int val
= (ext1
<< 8) + ext2
;
1367 for (i
= 0; i
<= 4; i
++)
1369 ((val
>> (i
* 2)) & 0x03) << 2;
1371 for (i
= 0; i
<= 2; i
++)
1373 (val
>> ((i
+ 4) * 2)) & 0x0c;
1376 data
->vid
= lm85_read_value(client
, LM85_REG_VID
);
1378 for (i
= 0; i
<= 3; ++i
) {
1380 lm85_read_value(client
, LM85_REG_IN(i
));
1382 lm85_read_value(client
, LM85_REG_FAN(i
));
1385 if (!(data
->type
== adt7463
&& (data
->vid
& 0x80))) {
1386 data
->in
[4] = lm85_read_value(client
,
1390 for (i
= 0; i
<= 2; ++i
) {
1392 lm85_read_value(client
, LM85_REG_TEMP(i
));
1394 lm85_read_value(client
, LM85_REG_PWM(i
));
1397 data
->alarms
= lm85_read_value(client
, LM85_REG_ALARM1
);
1399 if (data
->type
== emc6d100
) {
1400 /* Three more voltage sensors */
1401 for (i
= 5; i
<= 7; ++i
) {
1402 data
->in
[i
] = lm85_read_value(client
,
1403 EMC6D100_REG_IN(i
));
1405 /* More alarm bits */
1406 data
->alarms
|= lm85_read_value(client
,
1407 EMC6D100_REG_ALARM3
) << 16;
1408 } else if (data
->type
== emc6d102
) {
1409 /* Have to read LSB bits after the MSB ones because
1410 the reading of the MSB bits has frozen the
1411 LSBs (backward from the ADM1027).
1413 int ext1
= lm85_read_value(client
,
1414 EMC6D102_REG_EXTEND_ADC1
);
1415 int ext2
= lm85_read_value(client
,
1416 EMC6D102_REG_EXTEND_ADC2
);
1417 int ext3
= lm85_read_value(client
,
1418 EMC6D102_REG_EXTEND_ADC3
);
1419 int ext4
= lm85_read_value(client
,
1420 EMC6D102_REG_EXTEND_ADC4
);
1421 data
->in_ext
[0] = ext3
& 0x0f;
1422 data
->in_ext
[1] = ext4
& 0x0f;
1423 data
->in_ext
[2] = ext4
>> 4;
1424 data
->in_ext
[3] = ext3
>> 4;
1425 data
->in_ext
[4] = ext2
>> 4;
1427 data
->temp_ext
[0] = ext1
& 0x0f;
1428 data
->temp_ext
[1] = ext2
& 0x0f;
1429 data
->temp_ext
[2] = ext1
>> 4;
1432 data
->last_reading
= jiffies
;
1433 } /* last_reading */
1436 time_after(jiffies
, data
->last_config
+ LM85_CONFIG_INTERVAL
)) {
1437 /* Things that don't change often */
1438 dev_dbg(&client
->dev
, "Reading config values\n");
1440 for (i
= 0; i
<= 3; ++i
) {
1442 lm85_read_value(client
, LM85_REG_IN_MIN(i
));
1444 lm85_read_value(client
, LM85_REG_IN_MAX(i
));
1446 lm85_read_value(client
, LM85_REG_FAN_MIN(i
));
1449 if (!(data
->type
== adt7463
&& (data
->vid
& 0x80))) {
1450 data
->in_min
[4] = lm85_read_value(client
,
1451 LM85_REG_IN_MIN(4));
1452 data
->in_max
[4] = lm85_read_value(client
,
1453 LM85_REG_IN_MAX(4));
1456 if (data
->type
== emc6d100
) {
1457 for (i
= 5; i
<= 7; ++i
) {
1458 data
->in_min
[i
] = lm85_read_value(client
,
1459 EMC6D100_REG_IN_MIN(i
));
1460 data
->in_max
[i
] = lm85_read_value(client
,
1461 EMC6D100_REG_IN_MAX(i
));
1465 for (i
= 0; i
<= 2; ++i
) {
1469 lm85_read_value(client
, LM85_REG_TEMP_MIN(i
));
1471 lm85_read_value(client
, LM85_REG_TEMP_MAX(i
));
1473 data
->autofan
[i
].config
=
1474 lm85_read_value(client
, LM85_REG_AFAN_CONFIG(i
));
1475 val
= lm85_read_value(client
, LM85_REG_AFAN_RANGE(i
));
1476 data
->pwm_freq
[i
] = val
& 0x07;
1477 data
->zone
[i
].range
= val
>> 4;
1478 data
->autofan
[i
].min_pwm
=
1479 lm85_read_value(client
, LM85_REG_AFAN_MINPWM(i
));
1480 data
->zone
[i
].limit
=
1481 lm85_read_value(client
, LM85_REG_AFAN_LIMIT(i
));
1482 data
->zone
[i
].critical
=
1483 lm85_read_value(client
, LM85_REG_AFAN_CRITICAL(i
));
1486 i
= lm85_read_value(client
, LM85_REG_AFAN_SPIKE1
);
1487 data
->autofan
[0].min_off
= (i
& 0x20) != 0;
1488 data
->autofan
[1].min_off
= (i
& 0x40) != 0;
1489 data
->autofan
[2].min_off
= (i
& 0x80) != 0;
1491 i
= lm85_read_value(client
, LM85_REG_AFAN_HYST1
);
1492 data
->zone
[0].hyst
= i
>> 4;
1493 data
->zone
[1].hyst
= i
& 0x0f;
1495 i
= lm85_read_value(client
, LM85_REG_AFAN_HYST2
);
1496 data
->zone
[2].hyst
= i
>> 4;
1498 data
->last_config
= jiffies
;
1503 mutex_unlock(&data
->update_lock
);
1509 static int __init
sm_lm85_init(void)
1511 return i2c_add_driver(&lm85_driver
);
1514 static void __exit
sm_lm85_exit(void)
1516 i2c_del_driver(&lm85_driver
);
1519 MODULE_LICENSE("GPL");
1520 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1521 "Margit Schubert-While <margitsw@t-online.de>, "
1522 "Justin Thiessen <jthiessen@penguincomputing.com>");
1523 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1525 module_init(sm_lm85_init
);
1526 module_exit(sm_lm85_exit
);