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>
9 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <linux/jiffies.h>
30 #include <linux/i2c.h>
31 #include <linux/hwmon.h>
32 #include <linux/hwmon-vid.h>
33 #include <linux/hwmon-sysfs.h>
34 #include <linux/err.h>
35 #include <linux/mutex.h>
37 /* Addresses to scan */
38 static const unsigned short normal_i2c
[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END
};
40 /* Insmod parameters */
41 I2C_CLIENT_INSMOD_6(lm85b
, lm85c
, adm1027
, adt7463
, emc6d100
, emc6d102
);
43 /* The LM85 registers */
45 #define LM85_REG_IN(nr) (0x20 + (nr))
46 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
47 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
49 #define LM85_REG_TEMP(nr) (0x25 + (nr))
50 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
51 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
53 /* Fan speeds are LSB, MSB (2 bytes) */
54 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
55 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
57 #define LM85_REG_PWM(nr) (0x30 + (nr))
59 #define LM85_REG_COMPANY 0x3e
60 #define LM85_REG_VERSTEP 0x3f
61 /* These are the recognized values for the above regs */
62 #define LM85_COMPANY_NATIONAL 0x01
63 #define LM85_COMPANY_ANALOG_DEV 0x41
64 #define LM85_COMPANY_SMSC 0x5c
65 #define LM85_VERSTEP_VMASK 0xf0
66 #define LM85_VERSTEP_GENERIC 0x60
67 #define LM85_VERSTEP_LM85C 0x60
68 #define LM85_VERSTEP_LM85B 0x62
69 #define LM85_VERSTEP_ADM1027 0x60
70 #define LM85_VERSTEP_ADT7463 0x62
71 #define LM85_VERSTEP_ADT7463C 0x6A
72 #define LM85_VERSTEP_EMC6D100_A0 0x60
73 #define LM85_VERSTEP_EMC6D100_A1 0x61
74 #define LM85_VERSTEP_EMC6D102 0x65
76 #define LM85_REG_CONFIG 0x40
78 #define LM85_REG_ALARM1 0x41
79 #define LM85_REG_ALARM2 0x42
81 #define LM85_REG_VID 0x43
83 /* Automated FAN control */
84 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
85 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
86 #define LM85_REG_AFAN_SPIKE1 0x62
87 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
88 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
89 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
90 #define LM85_REG_AFAN_HYST1 0x6d
91 #define LM85_REG_AFAN_HYST2 0x6e
93 #define ADM1027_REG_EXTEND_ADC1 0x76
94 #define ADM1027_REG_EXTEND_ADC2 0x77
96 #define EMC6D100_REG_ALARM3 0x7d
97 /* IN5, IN6 and IN7 */
98 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
99 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
100 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
101 #define EMC6D102_REG_EXTEND_ADC1 0x85
102 #define EMC6D102_REG_EXTEND_ADC2 0x86
103 #define EMC6D102_REG_EXTEND_ADC3 0x87
104 #define EMC6D102_REG_EXTEND_ADC4 0x88
107 /* Conversions. Rounding and limit checking is only done on the TO_REG
108 variants. Note that you should be a bit careful with which arguments
109 these macros are called: arguments may be evaluated more than once.
112 /* IN are scaled acording to built-in resistors */
113 static const int lm85_scaling
[] = { /* .001 Volts */
114 2500, 2250, 3300, 5000, 12000,
115 3300, 1500, 1800 /*EMC6D100*/
117 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
119 #define INS_TO_REG(n, val) \
120 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
122 #define INSEXT_FROM_REG(n, val, ext) \
123 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
125 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
127 /* FAN speed is measured using 90kHz clock */
128 static inline u16
FAN_TO_REG(unsigned long val
)
132 return SENSORS_LIMIT(5400000 / val
, 1, 0xfffe);
134 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
137 /* Temperature is reported in .001 degC increments */
138 #define TEMP_TO_REG(val) \
139 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
140 #define TEMPEXT_FROM_REG(val, ext) \
141 SCALE(((val) << 4) + (ext), 16, 1000)
142 #define TEMP_FROM_REG(val) ((val) * 1000)
144 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
145 #define PWM_FROM_REG(val) (val)
148 /* ZONEs have the following parameters:
149 * Limit (low) temp, 1. degC
150 * Hysteresis (below limit), 1. degC (0-15)
151 * Range of speed control, .1 degC (2-80)
152 * Critical (high) temp, 1. degC
154 * FAN PWMs have the following parameters:
155 * Reference Zone, 1, 2, 3, etc.
156 * Spinup time, .05 sec
157 * PWM value at limit/low temp, 1 count
158 * PWM Frequency, 1. Hz
159 * PWM is Min or OFF below limit, flag
160 * Invert PWM output, flag
162 * Some chips filter the temp, others the fan.
163 * Filter constant (or disabled) .1 seconds
166 /* These are the zone temperature range encodings in .001 degree C */
167 static const int lm85_range_map
[] = {
168 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
169 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
172 static int RANGE_TO_REG(int range
)
176 if (range
>= lm85_range_map
[15])
179 /* Find the closest match */
180 for (i
= 14; i
>= 0; --i
) {
181 if (range
>= lm85_range_map
[i
]) {
182 if ((lm85_range_map
[i
+ 1] - range
) <
183 (range
- lm85_range_map
[i
]))
191 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
193 /* These are the PWM frequency encodings */
194 static const int lm85_freq_map
[] = { /* .1 Hz */
195 100, 150, 230, 300, 380, 470, 620, 940
198 static int FREQ_TO_REG(int freq
)
202 if (freq
>= lm85_freq_map
[7])
204 for (i
= 0; i
< 7; ++i
)
205 if (freq
<= lm85_freq_map
[i
])
209 #define FREQ_FROM_REG(val) lm85_freq_map[(val) & 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 freq
; /* PWM frequency, encoded */
279 u8 min_pwm
; /* Minimum PWM value, encoded */
280 u8 min_off
; /* Min PWM or OFF below "limit", flag */
283 /* For each registered chip, we need to keep some data in memory.
284 The structure is dynamically allocated. */
286 struct i2c_client client
;
287 struct device
*hwmon_dev
;
290 struct mutex update_lock
;
291 int valid
; /* !=0 if following fields are valid */
292 unsigned long last_reading
; /* In jiffies */
293 unsigned long last_config
; /* In jiffies */
295 u8 in
[8]; /* Register value */
296 u8 in_max
[8]; /* Register value */
297 u8 in_min
[8]; /* Register value */
298 s8 temp
[3]; /* Register value */
299 s8 temp_min
[3]; /* Register value */
300 s8 temp_max
[3]; /* Register value */
301 u16 fan
[4]; /* Register value */
302 u16 fan_min
[4]; /* Register value */
303 u8 pwm
[3]; /* Register value */
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_attach_adapter(struct i2c_adapter
*adapter
);
314 static int lm85_detect(struct i2c_adapter
*adapter
, int address
,
316 static int lm85_detach_client(struct i2c_client
*client
);
318 static int lm85_read_value(struct i2c_client
*client
, u8 reg
);
319 static void lm85_write_value(struct i2c_client
*client
, u8 reg
, int value
);
320 static struct lm85_data
*lm85_update_device(struct device
*dev
);
323 static struct i2c_driver lm85_driver
= {
327 .attach_adapter
= lm85_attach_adapter
,
328 .detach_client
= lm85_detach_client
,
333 static ssize_t
show_fan(struct device
*dev
, struct device_attribute
*attr
,
336 int nr
= to_sensor_dev_attr(attr
)->index
;
337 struct lm85_data
*data
= lm85_update_device(dev
);
338 return sprintf(buf
, "%d\n", FAN_FROM_REG(data
->fan
[nr
]));
341 static ssize_t
show_fan_min(struct device
*dev
, struct device_attribute
*attr
,
344 int nr
= to_sensor_dev_attr(attr
)->index
;
345 struct lm85_data
*data
= lm85_update_device(dev
);
346 return sprintf(buf
, "%d\n", FAN_FROM_REG(data
->fan_min
[nr
]));
349 static ssize_t
set_fan_min(struct device
*dev
, struct device_attribute
*attr
,
350 const char *buf
, size_t count
)
352 int nr
= to_sensor_dev_attr(attr
)->index
;
353 struct i2c_client
*client
= to_i2c_client(dev
);
354 struct lm85_data
*data
= i2c_get_clientdata(client
);
355 unsigned long val
= simple_strtoul(buf
, NULL
, 10);
357 mutex_lock(&data
->update_lock
);
358 data
->fan_min
[nr
] = FAN_TO_REG(val
);
359 lm85_write_value(client
, LM85_REG_FAN_MIN(nr
), data
->fan_min
[nr
]);
360 mutex_unlock(&data
->update_lock
);
364 #define show_fan_offset(offset) \
365 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
366 show_fan, NULL, offset - 1); \
367 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
368 show_fan_min, set_fan_min, offset - 1)
375 /* vid, vrm, alarms */
377 static ssize_t
show_vid_reg(struct device
*dev
, struct device_attribute
*attr
,
380 struct lm85_data
*data
= lm85_update_device(dev
);
383 if (data
->type
== adt7463
&& (data
->vid
& 0x80)) {
384 /* 6-pin VID (VRM 10) */
385 vid
= vid_from_reg(data
->vid
& 0x3f, data
->vrm
);
387 /* 5-pin VID (VRM 9) */
388 vid
= vid_from_reg(data
->vid
& 0x1f, data
->vrm
);
391 return sprintf(buf
, "%d\n", vid
);
394 static DEVICE_ATTR(cpu0_vid
, S_IRUGO
, show_vid_reg
, NULL
);
396 static ssize_t
show_vrm_reg(struct device
*dev
, struct device_attribute
*attr
,
399 struct lm85_data
*data
= dev_get_drvdata(dev
);
400 return sprintf(buf
, "%ld\n", (long) data
->vrm
);
403 static ssize_t
store_vrm_reg(struct device
*dev
, struct device_attribute
*attr
,
404 const char *buf
, size_t count
)
406 struct lm85_data
*data
= dev_get_drvdata(dev
);
407 data
->vrm
= simple_strtoul(buf
, NULL
, 10);
411 static DEVICE_ATTR(vrm
, S_IRUGO
| S_IWUSR
, show_vrm_reg
, store_vrm_reg
);
413 static ssize_t
show_alarms_reg(struct device
*dev
, struct device_attribute
416 struct lm85_data
*data
= lm85_update_device(dev
);
417 return sprintf(buf
, "%u\n", data
->alarms
);
420 static DEVICE_ATTR(alarms
, S_IRUGO
, show_alarms_reg
, NULL
);
422 static ssize_t
show_alarm(struct device
*dev
, struct device_attribute
*attr
,
425 int nr
= to_sensor_dev_attr(attr
)->index
;
426 struct lm85_data
*data
= lm85_update_device(dev
);
427 return sprintf(buf
, "%u\n", (data
->alarms
>> nr
) & 1);
430 static SENSOR_DEVICE_ATTR(in0_alarm
, S_IRUGO
, show_alarm
, NULL
, 0);
431 static SENSOR_DEVICE_ATTR(in1_alarm
, S_IRUGO
, show_alarm
, NULL
, 1);
432 static SENSOR_DEVICE_ATTR(in2_alarm
, S_IRUGO
, show_alarm
, NULL
, 2);
433 static SENSOR_DEVICE_ATTR(in3_alarm
, S_IRUGO
, show_alarm
, NULL
, 3);
434 static SENSOR_DEVICE_ATTR(in4_alarm
, S_IRUGO
, show_alarm
, NULL
, 8);
435 static SENSOR_DEVICE_ATTR(in5_alarm
, S_IRUGO
, show_alarm
, NULL
, 18);
436 static SENSOR_DEVICE_ATTR(in6_alarm
, S_IRUGO
, show_alarm
, NULL
, 16);
437 static SENSOR_DEVICE_ATTR(in7_alarm
, S_IRUGO
, show_alarm
, NULL
, 17);
438 static SENSOR_DEVICE_ATTR(temp1_alarm
, S_IRUGO
, show_alarm
, NULL
, 4);
439 static SENSOR_DEVICE_ATTR(temp1_fault
, S_IRUGO
, show_alarm
, NULL
, 14);
440 static SENSOR_DEVICE_ATTR(temp2_alarm
, S_IRUGO
, show_alarm
, NULL
, 5);
441 static SENSOR_DEVICE_ATTR(temp3_alarm
, S_IRUGO
, show_alarm
, NULL
, 6);
442 static SENSOR_DEVICE_ATTR(temp3_fault
, S_IRUGO
, show_alarm
, NULL
, 15);
443 static SENSOR_DEVICE_ATTR(fan1_alarm
, S_IRUGO
, show_alarm
, NULL
, 10);
444 static SENSOR_DEVICE_ATTR(fan2_alarm
, S_IRUGO
, show_alarm
, NULL
, 11);
445 static SENSOR_DEVICE_ATTR(fan3_alarm
, S_IRUGO
, show_alarm
, NULL
, 12);
446 static SENSOR_DEVICE_ATTR(fan4_alarm
, S_IRUGO
, show_alarm
, NULL
, 13);
450 static ssize_t
show_pwm(struct device
*dev
, struct device_attribute
*attr
,
453 int nr
= to_sensor_dev_attr(attr
)->index
;
454 struct lm85_data
*data
= lm85_update_device(dev
);
455 return sprintf(buf
, "%d\n", PWM_FROM_REG(data
->pwm
[nr
]));
458 static ssize_t
set_pwm(struct device
*dev
, struct device_attribute
*attr
,
459 const char *buf
, size_t count
)
461 int nr
= to_sensor_dev_attr(attr
)->index
;
462 struct i2c_client
*client
= to_i2c_client(dev
);
463 struct lm85_data
*data
= i2c_get_clientdata(client
);
464 long val
= simple_strtol(buf
, NULL
, 10);
466 mutex_lock(&data
->update_lock
);
467 data
->pwm
[nr
] = PWM_TO_REG(val
);
468 lm85_write_value(client
, LM85_REG_PWM(nr
), data
->pwm
[nr
]);
469 mutex_unlock(&data
->update_lock
);
473 static ssize_t
show_pwm_enable(struct device
*dev
, struct device_attribute
476 int nr
= to_sensor_dev_attr(attr
)->index
;
477 struct lm85_data
*data
= lm85_update_device(dev
);
478 int pwm_zone
, enable
;
480 pwm_zone
= ZONE_FROM_REG(data
->autofan
[nr
].config
);
482 case -1: /* PWM is always at 100% */
485 case 0: /* PWM is always at 0% */
486 case -2: /* PWM responds to manual control */
489 default: /* PWM in automatic mode */
492 return sprintf(buf
, "%d\n", enable
);
495 static ssize_t
set_pwm_enable(struct device
*dev
, struct device_attribute
496 *attr
, const char *buf
, size_t count
)
498 int nr
= to_sensor_dev_attr(attr
)->index
;
499 struct i2c_client
*client
= to_i2c_client(dev
);
500 struct lm85_data
*data
= i2c_get_clientdata(client
);
501 long val
= simple_strtol(buf
, NULL
, 10);
512 /* Here we have to choose arbitrarily one of the 5 possible
513 configurations; I go for the safest */
520 mutex_lock(&data
->update_lock
);
521 data
->autofan
[nr
].config
= lm85_read_value(client
,
522 LM85_REG_AFAN_CONFIG(nr
));
523 data
->autofan
[nr
].config
= (data
->autofan
[nr
].config
& ~0xe0)
525 lm85_write_value(client
, LM85_REG_AFAN_CONFIG(nr
),
526 data
->autofan
[nr
].config
);
527 mutex_unlock(&data
->update_lock
);
531 #define show_pwm_reg(offset) \
532 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
533 show_pwm, set_pwm, offset - 1); \
534 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
535 show_pwm_enable, set_pwm_enable, offset - 1)
543 static ssize_t
show_in(struct device
*dev
, struct device_attribute
*attr
,
546 int nr
= to_sensor_dev_attr(attr
)->index
;
547 struct lm85_data
*data
= lm85_update_device(dev
);
548 return sprintf(buf
, "%d\n", INSEXT_FROM_REG(nr
, data
->in
[nr
],
552 static ssize_t
show_in_min(struct device
*dev
, struct device_attribute
*attr
,
555 int nr
= to_sensor_dev_attr(attr
)->index
;
556 struct lm85_data
*data
= lm85_update_device(dev
);
557 return sprintf(buf
, "%d\n", INS_FROM_REG(nr
, data
->in_min
[nr
]));
560 static ssize_t
set_in_min(struct device
*dev
, struct device_attribute
*attr
,
561 const char *buf
, size_t count
)
563 int nr
= to_sensor_dev_attr(attr
)->index
;
564 struct i2c_client
*client
= to_i2c_client(dev
);
565 struct lm85_data
*data
= i2c_get_clientdata(client
);
566 long val
= simple_strtol(buf
, NULL
, 10);
568 mutex_lock(&data
->update_lock
);
569 data
->in_min
[nr
] = INS_TO_REG(nr
, val
);
570 lm85_write_value(client
, LM85_REG_IN_MIN(nr
), data
->in_min
[nr
]);
571 mutex_unlock(&data
->update_lock
);
575 static ssize_t
show_in_max(struct device
*dev
, struct device_attribute
*attr
,
578 int nr
= to_sensor_dev_attr(attr
)->index
;
579 struct lm85_data
*data
= lm85_update_device(dev
);
580 return sprintf(buf
, "%d\n", INS_FROM_REG(nr
, data
->in_max
[nr
]));
583 static ssize_t
set_in_max(struct device
*dev
, struct device_attribute
*attr
,
584 const char *buf
, size_t count
)
586 int nr
= to_sensor_dev_attr(attr
)->index
;
587 struct i2c_client
*client
= to_i2c_client(dev
);
588 struct lm85_data
*data
= i2c_get_clientdata(client
);
589 long val
= simple_strtol(buf
, NULL
, 10);
591 mutex_lock(&data
->update_lock
);
592 data
->in_max
[nr
] = INS_TO_REG(nr
, val
);
593 lm85_write_value(client
, LM85_REG_IN_MAX(nr
), data
->in_max
[nr
]);
594 mutex_unlock(&data
->update_lock
);
598 #define show_in_reg(offset) \
599 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
600 show_in, NULL, offset); \
601 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
602 show_in_min, set_in_min, offset); \
603 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
604 show_in_max, set_in_max, offset)
617 static ssize_t
show_temp(struct device
*dev
, struct device_attribute
*attr
,
620 int nr
= to_sensor_dev_attr(attr
)->index
;
621 struct lm85_data
*data
= lm85_update_device(dev
);
622 return sprintf(buf
, "%d\n", TEMPEXT_FROM_REG(data
->temp
[nr
],
623 data
->temp_ext
[nr
]));
626 static ssize_t
show_temp_min(struct device
*dev
, struct device_attribute
*attr
,
629 int nr
= to_sensor_dev_attr(attr
)->index
;
630 struct lm85_data
*data
= lm85_update_device(dev
);
631 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_min
[nr
]));
634 static ssize_t
set_temp_min(struct device
*dev
, struct device_attribute
*attr
,
635 const char *buf
, size_t count
)
637 int nr
= to_sensor_dev_attr(attr
)->index
;
638 struct i2c_client
*client
= to_i2c_client(dev
);
639 struct lm85_data
*data
= i2c_get_clientdata(client
);
640 long val
= simple_strtol(buf
, NULL
, 10);
642 mutex_lock(&data
->update_lock
);
643 data
->temp_min
[nr
] = TEMP_TO_REG(val
);
644 lm85_write_value(client
, LM85_REG_TEMP_MIN(nr
), data
->temp_min
[nr
]);
645 mutex_unlock(&data
->update_lock
);
649 static ssize_t
show_temp_max(struct device
*dev
, struct device_attribute
*attr
,
652 int nr
= to_sensor_dev_attr(attr
)->index
;
653 struct lm85_data
*data
= lm85_update_device(dev
);
654 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_max
[nr
]));
657 static ssize_t
set_temp_max(struct device
*dev
, struct device_attribute
*attr
,
658 const char *buf
, size_t count
)
660 int nr
= to_sensor_dev_attr(attr
)->index
;
661 struct i2c_client
*client
= to_i2c_client(dev
);
662 struct lm85_data
*data
= i2c_get_clientdata(client
);
663 long val
= simple_strtol(buf
, NULL
, 10);
665 mutex_lock(&data
->update_lock
);
666 data
->temp_max
[nr
] = TEMP_TO_REG(val
);
667 lm85_write_value(client
, LM85_REG_TEMP_MAX(nr
), data
->temp_max
[nr
]);
668 mutex_unlock(&data
->update_lock
);
672 #define show_temp_reg(offset) \
673 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
674 show_temp, NULL, offset - 1); \
675 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
676 show_temp_min, set_temp_min, offset - 1); \
677 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
678 show_temp_max, set_temp_max, offset - 1);
685 /* Automatic PWM control */
687 static ssize_t
show_pwm_auto_channels(struct device
*dev
,
688 struct device_attribute
*attr
, char *buf
)
690 int nr
= to_sensor_dev_attr(attr
)->index
;
691 struct lm85_data
*data
= lm85_update_device(dev
);
692 return sprintf(buf
, "%d\n", ZONE_FROM_REG(data
->autofan
[nr
].config
));
695 static ssize_t
set_pwm_auto_channels(struct device
*dev
,
696 struct device_attribute
*attr
, const char *buf
, size_t count
)
698 int nr
= to_sensor_dev_attr(attr
)->index
;
699 struct i2c_client
*client
= to_i2c_client(dev
);
700 struct lm85_data
*data
= i2c_get_clientdata(client
);
701 long val
= simple_strtol(buf
, NULL
, 10);
703 mutex_lock(&data
->update_lock
);
704 data
->autofan
[nr
].config
= (data
->autofan
[nr
].config
& (~0xe0))
706 lm85_write_value(client
, LM85_REG_AFAN_CONFIG(nr
),
707 data
->autofan
[nr
].config
);
708 mutex_unlock(&data
->update_lock
);
712 static ssize_t
show_pwm_auto_pwm_min(struct device
*dev
,
713 struct device_attribute
*attr
, char *buf
)
715 int nr
= to_sensor_dev_attr(attr
)->index
;
716 struct lm85_data
*data
= lm85_update_device(dev
);
717 return sprintf(buf
, "%d\n", PWM_FROM_REG(data
->autofan
[nr
].min_pwm
));
720 static ssize_t
set_pwm_auto_pwm_min(struct device
*dev
,
721 struct device_attribute
*attr
, const char *buf
, size_t count
)
723 int nr
= to_sensor_dev_attr(attr
)->index
;
724 struct i2c_client
*client
= to_i2c_client(dev
);
725 struct lm85_data
*data
= i2c_get_clientdata(client
);
726 long val
= simple_strtol(buf
, NULL
, 10);
728 mutex_lock(&data
->update_lock
);
729 data
->autofan
[nr
].min_pwm
= PWM_TO_REG(val
);
730 lm85_write_value(client
, LM85_REG_AFAN_MINPWM(nr
),
731 data
->autofan
[nr
].min_pwm
);
732 mutex_unlock(&data
->update_lock
);
736 static ssize_t
show_pwm_auto_pwm_minctl(struct device
*dev
,
737 struct device_attribute
*attr
, char *buf
)
739 int nr
= to_sensor_dev_attr(attr
)->index
;
740 struct lm85_data
*data
= lm85_update_device(dev
);
741 return sprintf(buf
, "%d\n", data
->autofan
[nr
].min_off
);
744 static ssize_t
set_pwm_auto_pwm_minctl(struct device
*dev
,
745 struct device_attribute
*attr
, const char *buf
, size_t count
)
747 int nr
= to_sensor_dev_attr(attr
)->index
;
748 struct i2c_client
*client
= to_i2c_client(dev
);
749 struct lm85_data
*data
= i2c_get_clientdata(client
);
750 long val
= simple_strtol(buf
, NULL
, 10);
753 mutex_lock(&data
->update_lock
);
754 data
->autofan
[nr
].min_off
= val
;
755 tmp
= lm85_read_value(client
, LM85_REG_AFAN_SPIKE1
);
756 tmp
&= ~(0x20 << nr
);
757 if (data
->autofan
[nr
].min_off
)
759 lm85_write_value(client
, LM85_REG_AFAN_SPIKE1
, tmp
);
760 mutex_unlock(&data
->update_lock
);
764 static ssize_t
show_pwm_auto_pwm_freq(struct device
*dev
,
765 struct device_attribute
*attr
, char *buf
)
767 int nr
= to_sensor_dev_attr(attr
)->index
;
768 struct lm85_data
*data
= lm85_update_device(dev
);
769 return sprintf(buf
, "%d\n", FREQ_FROM_REG(data
->autofan
[nr
].freq
));
772 static ssize_t
set_pwm_auto_pwm_freq(struct device
*dev
,
773 struct device_attribute
*attr
, const char *buf
, size_t count
)
775 int nr
= to_sensor_dev_attr(attr
)->index
;
776 struct i2c_client
*client
= to_i2c_client(dev
);
777 struct lm85_data
*data
= i2c_get_clientdata(client
);
778 long val
= simple_strtol(buf
, NULL
, 10);
780 mutex_lock(&data
->update_lock
);
781 data
->autofan
[nr
].freq
= FREQ_TO_REG(val
);
782 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
783 (data
->zone
[nr
].range
<< 4)
784 | data
->autofan
[nr
].freq
);
785 mutex_unlock(&data
->update_lock
);
789 #define pwm_auto(offset) \
790 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
791 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
792 set_pwm_auto_channels, offset - 1); \
793 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
794 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
795 set_pwm_auto_pwm_min, offset - 1); \
796 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
797 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
798 set_pwm_auto_pwm_minctl, offset - 1); \
799 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_freq, \
800 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_freq, \
801 set_pwm_auto_pwm_freq, offset - 1);
807 /* Temperature settings for automatic PWM control */
809 static ssize_t
show_temp_auto_temp_off(struct device
*dev
,
810 struct device_attribute
*attr
, char *buf
)
812 int nr
= to_sensor_dev_attr(attr
)->index
;
813 struct lm85_data
*data
= lm85_update_device(dev
);
814 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
) -
815 HYST_FROM_REG(data
->zone
[nr
].hyst
));
818 static ssize_t
set_temp_auto_temp_off(struct device
*dev
,
819 struct device_attribute
*attr
, const char *buf
, size_t count
)
821 int nr
= to_sensor_dev_attr(attr
)->index
;
822 struct i2c_client
*client
= to_i2c_client(dev
);
823 struct lm85_data
*data
= i2c_get_clientdata(client
);
825 long val
= simple_strtol(buf
, NULL
, 10);
827 mutex_lock(&data
->update_lock
);
828 min
= TEMP_FROM_REG(data
->zone
[nr
].limit
);
829 data
->zone
[nr
].off_desired
= TEMP_TO_REG(val
);
830 data
->zone
[nr
].hyst
= HYST_TO_REG(min
- val
);
831 if (nr
== 0 || nr
== 1) {
832 lm85_write_value(client
, LM85_REG_AFAN_HYST1
,
833 (data
->zone
[0].hyst
<< 4)
834 | data
->zone
[1].hyst
);
836 lm85_write_value(client
, LM85_REG_AFAN_HYST2
,
837 (data
->zone
[2].hyst
<< 4));
839 mutex_unlock(&data
->update_lock
);
843 static ssize_t
show_temp_auto_temp_min(struct device
*dev
,
844 struct device_attribute
*attr
, char *buf
)
846 int nr
= to_sensor_dev_attr(attr
)->index
;
847 struct lm85_data
*data
= lm85_update_device(dev
);
848 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
));
851 static ssize_t
set_temp_auto_temp_min(struct device
*dev
,
852 struct device_attribute
*attr
, const char *buf
, size_t count
)
854 int nr
= to_sensor_dev_attr(attr
)->index
;
855 struct i2c_client
*client
= to_i2c_client(dev
);
856 struct lm85_data
*data
= i2c_get_clientdata(client
);
857 long val
= simple_strtol(buf
, NULL
, 10);
859 mutex_lock(&data
->update_lock
);
860 data
->zone
[nr
].limit
= TEMP_TO_REG(val
);
861 lm85_write_value(client
, LM85_REG_AFAN_LIMIT(nr
),
862 data
->zone
[nr
].limit
);
864 /* Update temp_auto_max and temp_auto_range */
865 data
->zone
[nr
].range
= RANGE_TO_REG(
866 TEMP_FROM_REG(data
->zone
[nr
].max_desired
) -
867 TEMP_FROM_REG(data
->zone
[nr
].limit
));
868 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
869 ((data
->zone
[nr
].range
& 0x0f) << 4)
870 | (data
->autofan
[nr
].freq
& 0x07));
872 /* Update temp_auto_hyst and temp_auto_off */
873 data
->zone
[nr
].hyst
= HYST_TO_REG(TEMP_FROM_REG(
874 data
->zone
[nr
].limit
) - TEMP_FROM_REG(
875 data
->zone
[nr
].off_desired
));
876 if (nr
== 0 || nr
== 1) {
877 lm85_write_value(client
, LM85_REG_AFAN_HYST1
,
878 (data
->zone
[0].hyst
<< 4)
879 | data
->zone
[1].hyst
);
881 lm85_write_value(client
, LM85_REG_AFAN_HYST2
,
882 (data
->zone
[2].hyst
<< 4));
884 mutex_unlock(&data
->update_lock
);
888 static ssize_t
show_temp_auto_temp_max(struct device
*dev
,
889 struct device_attribute
*attr
, char *buf
)
891 int nr
= to_sensor_dev_attr(attr
)->index
;
892 struct lm85_data
*data
= lm85_update_device(dev
);
893 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
) +
894 RANGE_FROM_REG(data
->zone
[nr
].range
));
897 static ssize_t
set_temp_auto_temp_max(struct device
*dev
,
898 struct device_attribute
*attr
, const char *buf
, size_t count
)
900 int nr
= to_sensor_dev_attr(attr
)->index
;
901 struct i2c_client
*client
= to_i2c_client(dev
);
902 struct lm85_data
*data
= i2c_get_clientdata(client
);
904 long val
= simple_strtol(buf
, NULL
, 10);
906 mutex_lock(&data
->update_lock
);
907 min
= TEMP_FROM_REG(data
->zone
[nr
].limit
);
908 data
->zone
[nr
].max_desired
= TEMP_TO_REG(val
);
909 data
->zone
[nr
].range
= RANGE_TO_REG(
911 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
912 ((data
->zone
[nr
].range
& 0x0f) << 4)
913 | (data
->autofan
[nr
].freq
& 0x07));
914 mutex_unlock(&data
->update_lock
);
918 static ssize_t
show_temp_auto_temp_crit(struct device
*dev
,
919 struct device_attribute
*attr
, char *buf
)
921 int nr
= to_sensor_dev_attr(attr
)->index
;
922 struct lm85_data
*data
= lm85_update_device(dev
);
923 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].critical
));
926 static ssize_t
set_temp_auto_temp_crit(struct device
*dev
,
927 struct device_attribute
*attr
, const char *buf
, size_t count
)
929 int nr
= to_sensor_dev_attr(attr
)->index
;
930 struct i2c_client
*client
= to_i2c_client(dev
);
931 struct lm85_data
*data
= i2c_get_clientdata(client
);
932 long val
= simple_strtol(buf
, NULL
, 10);
934 mutex_lock(&data
->update_lock
);
935 data
->zone
[nr
].critical
= TEMP_TO_REG(val
);
936 lm85_write_value(client
, LM85_REG_AFAN_CRITICAL(nr
),
937 data
->zone
[nr
].critical
);
938 mutex_unlock(&data
->update_lock
);
942 #define temp_auto(offset) \
943 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
944 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
945 set_temp_auto_temp_off, offset - 1); \
946 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
947 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
948 set_temp_auto_temp_min, offset - 1); \
949 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
950 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
951 set_temp_auto_temp_max, offset - 1); \
952 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
953 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
954 set_temp_auto_temp_crit, offset - 1);
960 static int lm85_attach_adapter(struct i2c_adapter
*adapter
)
962 if (!(adapter
->class & I2C_CLASS_HWMON
))
964 return i2c_probe(adapter
, &addr_data
, lm85_detect
);
967 static struct attribute
*lm85_attributes
[] = {
968 &sensor_dev_attr_fan1_input
.dev_attr
.attr
,
969 &sensor_dev_attr_fan2_input
.dev_attr
.attr
,
970 &sensor_dev_attr_fan3_input
.dev_attr
.attr
,
971 &sensor_dev_attr_fan4_input
.dev_attr
.attr
,
972 &sensor_dev_attr_fan1_min
.dev_attr
.attr
,
973 &sensor_dev_attr_fan2_min
.dev_attr
.attr
,
974 &sensor_dev_attr_fan3_min
.dev_attr
.attr
,
975 &sensor_dev_attr_fan4_min
.dev_attr
.attr
,
976 &sensor_dev_attr_fan1_alarm
.dev_attr
.attr
,
977 &sensor_dev_attr_fan2_alarm
.dev_attr
.attr
,
978 &sensor_dev_attr_fan3_alarm
.dev_attr
.attr
,
979 &sensor_dev_attr_fan4_alarm
.dev_attr
.attr
,
981 &sensor_dev_attr_pwm1
.dev_attr
.attr
,
982 &sensor_dev_attr_pwm2
.dev_attr
.attr
,
983 &sensor_dev_attr_pwm3
.dev_attr
.attr
,
984 &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
,
985 &sensor_dev_attr_pwm2_enable
.dev_attr
.attr
,
986 &sensor_dev_attr_pwm3_enable
.dev_attr
.attr
,
988 &sensor_dev_attr_in0_input
.dev_attr
.attr
,
989 &sensor_dev_attr_in1_input
.dev_attr
.attr
,
990 &sensor_dev_attr_in2_input
.dev_attr
.attr
,
991 &sensor_dev_attr_in3_input
.dev_attr
.attr
,
992 &sensor_dev_attr_in0_min
.dev_attr
.attr
,
993 &sensor_dev_attr_in1_min
.dev_attr
.attr
,
994 &sensor_dev_attr_in2_min
.dev_attr
.attr
,
995 &sensor_dev_attr_in3_min
.dev_attr
.attr
,
996 &sensor_dev_attr_in0_max
.dev_attr
.attr
,
997 &sensor_dev_attr_in1_max
.dev_attr
.attr
,
998 &sensor_dev_attr_in2_max
.dev_attr
.attr
,
999 &sensor_dev_attr_in3_max
.dev_attr
.attr
,
1000 &sensor_dev_attr_in0_alarm
.dev_attr
.attr
,
1001 &sensor_dev_attr_in1_alarm
.dev_attr
.attr
,
1002 &sensor_dev_attr_in2_alarm
.dev_attr
.attr
,
1003 &sensor_dev_attr_in3_alarm
.dev_attr
.attr
,
1005 &sensor_dev_attr_temp1_input
.dev_attr
.attr
,
1006 &sensor_dev_attr_temp2_input
.dev_attr
.attr
,
1007 &sensor_dev_attr_temp3_input
.dev_attr
.attr
,
1008 &sensor_dev_attr_temp1_min
.dev_attr
.attr
,
1009 &sensor_dev_attr_temp2_min
.dev_attr
.attr
,
1010 &sensor_dev_attr_temp3_min
.dev_attr
.attr
,
1011 &sensor_dev_attr_temp1_max
.dev_attr
.attr
,
1012 &sensor_dev_attr_temp2_max
.dev_attr
.attr
,
1013 &sensor_dev_attr_temp3_max
.dev_attr
.attr
,
1014 &sensor_dev_attr_temp1_alarm
.dev_attr
.attr
,
1015 &sensor_dev_attr_temp2_alarm
.dev_attr
.attr
,
1016 &sensor_dev_attr_temp3_alarm
.dev_attr
.attr
,
1017 &sensor_dev_attr_temp1_fault
.dev_attr
.attr
,
1018 &sensor_dev_attr_temp3_fault
.dev_attr
.attr
,
1020 &sensor_dev_attr_pwm1_auto_channels
.dev_attr
.attr
,
1021 &sensor_dev_attr_pwm2_auto_channels
.dev_attr
.attr
,
1022 &sensor_dev_attr_pwm3_auto_channels
.dev_attr
.attr
,
1023 &sensor_dev_attr_pwm1_auto_pwm_min
.dev_attr
.attr
,
1024 &sensor_dev_attr_pwm2_auto_pwm_min
.dev_attr
.attr
,
1025 &sensor_dev_attr_pwm3_auto_pwm_min
.dev_attr
.attr
,
1026 &sensor_dev_attr_pwm1_auto_pwm_minctl
.dev_attr
.attr
,
1027 &sensor_dev_attr_pwm2_auto_pwm_minctl
.dev_attr
.attr
,
1028 &sensor_dev_attr_pwm3_auto_pwm_minctl
.dev_attr
.attr
,
1029 &sensor_dev_attr_pwm1_auto_pwm_freq
.dev_attr
.attr
,
1030 &sensor_dev_attr_pwm2_auto_pwm_freq
.dev_attr
.attr
,
1031 &sensor_dev_attr_pwm3_auto_pwm_freq
.dev_attr
.attr
,
1033 &sensor_dev_attr_temp1_auto_temp_off
.dev_attr
.attr
,
1034 &sensor_dev_attr_temp2_auto_temp_off
.dev_attr
.attr
,
1035 &sensor_dev_attr_temp3_auto_temp_off
.dev_attr
.attr
,
1036 &sensor_dev_attr_temp1_auto_temp_min
.dev_attr
.attr
,
1037 &sensor_dev_attr_temp2_auto_temp_min
.dev_attr
.attr
,
1038 &sensor_dev_attr_temp3_auto_temp_min
.dev_attr
.attr
,
1039 &sensor_dev_attr_temp1_auto_temp_max
.dev_attr
.attr
,
1040 &sensor_dev_attr_temp2_auto_temp_max
.dev_attr
.attr
,
1041 &sensor_dev_attr_temp3_auto_temp_max
.dev_attr
.attr
,
1042 &sensor_dev_attr_temp1_auto_temp_crit
.dev_attr
.attr
,
1043 &sensor_dev_attr_temp2_auto_temp_crit
.dev_attr
.attr
,
1044 &sensor_dev_attr_temp3_auto_temp_crit
.dev_attr
.attr
,
1047 &dev_attr_cpu0_vid
.attr
,
1048 &dev_attr_alarms
.attr
,
1052 static const struct attribute_group lm85_group
= {
1053 .attrs
= lm85_attributes
,
1056 static struct attribute
*lm85_attributes_in4
[] = {
1057 &sensor_dev_attr_in4_input
.dev_attr
.attr
,
1058 &sensor_dev_attr_in4_min
.dev_attr
.attr
,
1059 &sensor_dev_attr_in4_max
.dev_attr
.attr
,
1060 &sensor_dev_attr_in4_alarm
.dev_attr
.attr
,
1064 static const struct attribute_group lm85_group_in4
= {
1065 .attrs
= lm85_attributes_in4
,
1068 static struct attribute
*lm85_attributes_in567
[] = {
1069 &sensor_dev_attr_in5_input
.dev_attr
.attr
,
1070 &sensor_dev_attr_in6_input
.dev_attr
.attr
,
1071 &sensor_dev_attr_in7_input
.dev_attr
.attr
,
1072 &sensor_dev_attr_in5_min
.dev_attr
.attr
,
1073 &sensor_dev_attr_in6_min
.dev_attr
.attr
,
1074 &sensor_dev_attr_in7_min
.dev_attr
.attr
,
1075 &sensor_dev_attr_in5_max
.dev_attr
.attr
,
1076 &sensor_dev_attr_in6_max
.dev_attr
.attr
,
1077 &sensor_dev_attr_in7_max
.dev_attr
.attr
,
1078 &sensor_dev_attr_in5_alarm
.dev_attr
.attr
,
1079 &sensor_dev_attr_in6_alarm
.dev_attr
.attr
,
1080 &sensor_dev_attr_in7_alarm
.dev_attr
.attr
,
1084 static const struct attribute_group lm85_group_in567
= {
1085 .attrs
= lm85_attributes_in567
,
1088 static void lm85_init_client(struct i2c_client
*client
)
1092 /* Start monitoring if needed */
1093 value
= lm85_read_value(client
, LM85_REG_CONFIG
);
1094 if (!(value
& 0x01)) {
1095 dev_info(&client
->dev
, "Starting monitoring\n");
1096 lm85_write_value(client
, LM85_REG_CONFIG
, value
| 0x01);
1099 /* Warn about unusual configuration bits */
1101 dev_warn(&client
->dev
, "Device configuration is locked\n");
1102 if (!(value
& 0x04))
1103 dev_warn(&client
->dev
, "Device is not ready\n");
1106 static int lm85_detect(struct i2c_adapter
*adapter
, int address
,
1109 int company
, verstep
;
1110 struct i2c_client
*client
;
1111 struct lm85_data
*data
;
1113 const char *type_name
;
1115 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
)) {
1116 /* We need to be able to do byte I/O */
1120 /* OK. For now, we presume we have a valid client. We now create the
1121 client structure, even though we cannot fill it completely yet.
1122 But it allows us to access lm85_{read,write}_value. */
1124 if (!(data
= kzalloc(sizeof(struct lm85_data
), GFP_KERNEL
))) {
1129 client
= &data
->client
;
1130 i2c_set_clientdata(client
, data
);
1131 client
->addr
= address
;
1132 client
->adapter
= adapter
;
1133 client
->driver
= &lm85_driver
;
1135 /* Now, we do the remaining detection. */
1137 company
= lm85_read_value(client
, LM85_REG_COMPANY
);
1138 verstep
= lm85_read_value(client
, LM85_REG_VERSTEP
);
1140 dev_dbg(&adapter
->dev
, "Detecting device at %d,0x%02x with"
1141 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1142 i2c_adapter_id(client
->adapter
), client
->addr
,
1145 /* If auto-detecting, Determine the chip type. */
1147 dev_dbg(&adapter
->dev
, "Autodetecting device at %d,0x%02x ...\n",
1148 i2c_adapter_id(adapter
), address
);
1149 if (company
== LM85_COMPANY_NATIONAL
1150 && verstep
== LM85_VERSTEP_LM85C
) {
1152 } else if (company
== LM85_COMPANY_NATIONAL
1153 && verstep
== LM85_VERSTEP_LM85B
) {
1155 } else if (company
== LM85_COMPANY_NATIONAL
1156 && (verstep
& LM85_VERSTEP_VMASK
) == LM85_VERSTEP_GENERIC
) {
1157 dev_err(&adapter
->dev
, "Unrecognized version/stepping 0x%02x"
1158 " Defaulting to LM85.\n", verstep
);
1160 } else if (company
== LM85_COMPANY_ANALOG_DEV
1161 && verstep
== LM85_VERSTEP_ADM1027
) {
1163 } else if (company
== LM85_COMPANY_ANALOG_DEV
1164 && (verstep
== LM85_VERSTEP_ADT7463
1165 || verstep
== LM85_VERSTEP_ADT7463C
)) {
1167 } else if (company
== LM85_COMPANY_ANALOG_DEV
1168 && (verstep
& LM85_VERSTEP_VMASK
) == LM85_VERSTEP_GENERIC
) {
1169 dev_err(&adapter
->dev
, "Unrecognized version/stepping 0x%02x"
1170 " Defaulting to Generic LM85.\n", verstep
);
1172 } else if (company
== LM85_COMPANY_SMSC
1173 && (verstep
== LM85_VERSTEP_EMC6D100_A0
1174 || verstep
== LM85_VERSTEP_EMC6D100_A1
)) {
1175 /* Unfortunately, we can't tell a '100 from a '101
1176 * from the registers. Since a '101 is a '100
1177 * in a package with fewer pins and therefore no
1178 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1179 * inputs read 0, then it's a '101.
1182 } else if (company
== LM85_COMPANY_SMSC
1183 && verstep
== LM85_VERSTEP_EMC6D102
) {
1185 } else if (company
== LM85_COMPANY_SMSC
1186 && (verstep
& LM85_VERSTEP_VMASK
) == LM85_VERSTEP_GENERIC
) {
1187 dev_err(&adapter
->dev
, "lm85: Detected SMSC chip\n");
1188 dev_err(&adapter
->dev
, "lm85: Unrecognized version/stepping 0x%02x"
1189 " Defaulting to Generic LM85.\n", verstep
);
1191 } else if (kind
== any_chip
1192 && (verstep
& LM85_VERSTEP_VMASK
) == LM85_VERSTEP_GENERIC
) {
1193 dev_err(&adapter
->dev
, "Generic LM85 Version 6 detected\n");
1194 /* Leave kind as "any_chip" */
1196 dev_dbg(&adapter
->dev
, "Autodetection failed\n");
1197 /* Not an LM85... */
1198 if (kind
== any_chip
) { /* User used force=x,y */
1199 dev_err(&adapter
->dev
, "Generic LM85 Version 6 not"
1200 " found at %d,0x%02x. Try force_lm85c.\n",
1201 i2c_adapter_id(adapter
), address
);
1208 /* Fill in the chip specific driver values */
1211 type_name
= "lm85b";
1214 type_name
= "lm85c";
1217 type_name
= "adm1027";
1220 type_name
= "adt7463";
1223 type_name
= "emc6d100";
1226 type_name
= "emc6d102";
1231 strlcpy(client
->name
, type_name
, I2C_NAME_SIZE
);
1233 /* Fill in the remaining client fields */
1235 mutex_init(&data
->update_lock
);
1237 /* Tell the I2C layer a new client has arrived */
1238 err
= i2c_attach_client(client
);
1242 /* Set the VRM version */
1243 data
->vrm
= vid_which_vrm();
1245 /* Initialize the LM85 chip */
1246 lm85_init_client(client
);
1248 /* Register sysfs hooks */
1249 err
= sysfs_create_group(&client
->dev
.kobj
, &lm85_group
);
1253 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1254 as a sixth digital VID input rather than an analog input. */
1255 data
->vid
= lm85_read_value(client
, LM85_REG_VID
);
1256 if (!(kind
== adt7463
&& (data
->vid
& 0x80)))
1257 if ((err
= sysfs_create_group(&client
->dev
.kobj
,
1261 /* The EMC6D100 has 3 additional voltage inputs */
1262 if (kind
== emc6d100
)
1263 if ((err
= sysfs_create_group(&client
->dev
.kobj
,
1264 &lm85_group_in567
)))
1267 data
->hwmon_dev
= hwmon_device_register(&client
->dev
);
1268 if (IS_ERR(data
->hwmon_dev
)) {
1269 err
= PTR_ERR(data
->hwmon_dev
);
1275 /* Error out and cleanup code */
1277 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group
);
1278 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group_in4
);
1279 if (kind
== emc6d100
)
1280 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group_in567
);
1282 i2c_detach_client(client
);
1289 static int lm85_detach_client(struct i2c_client
*client
)
1291 struct lm85_data
*data
= i2c_get_clientdata(client
);
1292 hwmon_device_unregister(data
->hwmon_dev
);
1293 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group
);
1294 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group_in4
);
1295 if (data
->type
== emc6d100
)
1296 sysfs_remove_group(&client
->dev
.kobj
, &lm85_group_in567
);
1297 i2c_detach_client(client
);
1303 static int lm85_read_value(struct i2c_client
*client
, u8 reg
)
1307 /* What size location is it? */
1309 case LM85_REG_FAN(0): /* Read WORD data */
1310 case LM85_REG_FAN(1):
1311 case LM85_REG_FAN(2):
1312 case LM85_REG_FAN(3):
1313 case LM85_REG_FAN_MIN(0):
1314 case LM85_REG_FAN_MIN(1):
1315 case LM85_REG_FAN_MIN(2):
1316 case LM85_REG_FAN_MIN(3):
1317 case LM85_REG_ALARM1
: /* Read both bytes at once */
1318 res
= i2c_smbus_read_byte_data(client
, reg
) & 0xff;
1319 res
|= i2c_smbus_read_byte_data(client
, reg
+ 1) << 8;
1321 default: /* Read BYTE data */
1322 res
= i2c_smbus_read_byte_data(client
, reg
);
1329 static void lm85_write_value(struct i2c_client
*client
, u8 reg
, int value
)
1332 case LM85_REG_FAN(0): /* Write WORD data */
1333 case LM85_REG_FAN(1):
1334 case LM85_REG_FAN(2):
1335 case LM85_REG_FAN(3):
1336 case LM85_REG_FAN_MIN(0):
1337 case LM85_REG_FAN_MIN(1):
1338 case LM85_REG_FAN_MIN(2):
1339 case LM85_REG_FAN_MIN(3):
1340 /* NOTE: ALARM is read only, so not included here */
1341 i2c_smbus_write_byte_data(client
, reg
, value
& 0xff);
1342 i2c_smbus_write_byte_data(client
, reg
+ 1, value
>> 8);
1344 default: /* Write BYTE data */
1345 i2c_smbus_write_byte_data(client
, reg
, value
);
1350 static struct lm85_data
*lm85_update_device(struct device
*dev
)
1352 struct i2c_client
*client
= to_i2c_client(dev
);
1353 struct lm85_data
*data
= i2c_get_clientdata(client
);
1356 mutex_lock(&data
->update_lock
);
1359 time_after(jiffies
, data
->last_reading
+ LM85_DATA_INTERVAL
)) {
1360 /* Things that change quickly */
1361 dev_dbg(&client
->dev
, "Reading sensor values\n");
1363 /* Have to read extended bits first to "freeze" the
1364 * more significant bits that are read later.
1365 * There are 2 additional resolution bits per channel and we
1366 * have room for 4, so we shift them to the left.
1368 if (data
->type
== adm1027
|| data
->type
== adt7463
) {
1369 int ext1
= lm85_read_value(client
,
1370 ADM1027_REG_EXTEND_ADC1
);
1371 int ext2
= lm85_read_value(client
,
1372 ADM1027_REG_EXTEND_ADC2
);
1373 int val
= (ext1
<< 8) + ext2
;
1375 for (i
= 0; i
<= 4; i
++)
1377 ((val
>> (i
* 2)) & 0x03) << 2;
1379 for (i
= 0; i
<= 2; i
++)
1381 (val
>> ((i
+ 4) * 2)) & 0x0c;
1384 data
->vid
= lm85_read_value(client
, LM85_REG_VID
);
1386 for (i
= 0; i
<= 3; ++i
) {
1388 lm85_read_value(client
, LM85_REG_IN(i
));
1390 lm85_read_value(client
, LM85_REG_FAN(i
));
1393 if (!(data
->type
== adt7463
&& (data
->vid
& 0x80))) {
1394 data
->in
[4] = lm85_read_value(client
,
1398 for (i
= 0; i
<= 2; ++i
) {
1400 lm85_read_value(client
, LM85_REG_TEMP(i
));
1402 lm85_read_value(client
, LM85_REG_PWM(i
));
1405 data
->alarms
= lm85_read_value(client
, LM85_REG_ALARM1
);
1407 if (data
->type
== emc6d100
) {
1408 /* Three more voltage sensors */
1409 for (i
= 5; i
<= 7; ++i
) {
1410 data
->in
[i
] = lm85_read_value(client
,
1411 EMC6D100_REG_IN(i
));
1413 /* More alarm bits */
1414 data
->alarms
|= lm85_read_value(client
,
1415 EMC6D100_REG_ALARM3
) << 16;
1416 } else if (data
->type
== emc6d102
) {
1417 /* Have to read LSB bits after the MSB ones because
1418 the reading of the MSB bits has frozen the
1419 LSBs (backward from the ADM1027).
1421 int ext1
= lm85_read_value(client
,
1422 EMC6D102_REG_EXTEND_ADC1
);
1423 int ext2
= lm85_read_value(client
,
1424 EMC6D102_REG_EXTEND_ADC2
);
1425 int ext3
= lm85_read_value(client
,
1426 EMC6D102_REG_EXTEND_ADC3
);
1427 int ext4
= lm85_read_value(client
,
1428 EMC6D102_REG_EXTEND_ADC4
);
1429 data
->in_ext
[0] = ext3
& 0x0f;
1430 data
->in_ext
[1] = ext4
& 0x0f;
1431 data
->in_ext
[2] = ext4
>> 4;
1432 data
->in_ext
[3] = ext3
>> 4;
1433 data
->in_ext
[4] = ext2
>> 4;
1435 data
->temp_ext
[0] = ext1
& 0x0f;
1436 data
->temp_ext
[1] = ext2
& 0x0f;
1437 data
->temp_ext
[2] = ext1
>> 4;
1440 data
->last_reading
= jiffies
;
1441 } /* last_reading */
1444 time_after(jiffies
, data
->last_config
+ LM85_CONFIG_INTERVAL
)) {
1445 /* Things that don't change often */
1446 dev_dbg(&client
->dev
, "Reading config values\n");
1448 for (i
= 0; i
<= 3; ++i
) {
1450 lm85_read_value(client
, LM85_REG_IN_MIN(i
));
1452 lm85_read_value(client
, LM85_REG_IN_MAX(i
));
1454 lm85_read_value(client
, LM85_REG_FAN_MIN(i
));
1457 if (!(data
->type
== adt7463
&& (data
->vid
& 0x80))) {
1458 data
->in_min
[4] = lm85_read_value(client
,
1459 LM85_REG_IN_MIN(4));
1460 data
->in_max
[4] = lm85_read_value(client
,
1461 LM85_REG_IN_MAX(4));
1464 if (data
->type
== emc6d100
) {
1465 for (i
= 5; i
<= 7; ++i
) {
1466 data
->in_min
[i
] = lm85_read_value(client
,
1467 EMC6D100_REG_IN_MIN(i
));
1468 data
->in_max
[i
] = lm85_read_value(client
,
1469 EMC6D100_REG_IN_MAX(i
));
1473 for (i
= 0; i
<= 2; ++i
) {
1477 lm85_read_value(client
, LM85_REG_TEMP_MIN(i
));
1479 lm85_read_value(client
, LM85_REG_TEMP_MAX(i
));
1481 data
->autofan
[i
].config
=
1482 lm85_read_value(client
, LM85_REG_AFAN_CONFIG(i
));
1483 val
= lm85_read_value(client
, LM85_REG_AFAN_RANGE(i
));
1484 data
->autofan
[i
].freq
= val
& 0x07;
1485 data
->zone
[i
].range
= val
>> 4;
1486 data
->autofan
[i
].min_pwm
=
1487 lm85_read_value(client
, LM85_REG_AFAN_MINPWM(i
));
1488 data
->zone
[i
].limit
=
1489 lm85_read_value(client
, LM85_REG_AFAN_LIMIT(i
));
1490 data
->zone
[i
].critical
=
1491 lm85_read_value(client
, LM85_REG_AFAN_CRITICAL(i
));
1494 i
= lm85_read_value(client
, LM85_REG_AFAN_SPIKE1
);
1495 data
->autofan
[0].min_off
= (i
& 0x20) != 0;
1496 data
->autofan
[1].min_off
= (i
& 0x40) != 0;
1497 data
->autofan
[2].min_off
= (i
& 0x80) != 0;
1499 i
= lm85_read_value(client
, LM85_REG_AFAN_HYST1
);
1500 data
->zone
[0].hyst
= i
>> 4;
1501 data
->zone
[1].hyst
= i
& 0x0f;
1503 i
= lm85_read_value(client
, LM85_REG_AFAN_HYST2
);
1504 data
->zone
[2].hyst
= i
>> 4;
1506 data
->last_config
= jiffies
;
1511 mutex_unlock(&data
->update_lock
);
1517 static int __init
sm_lm85_init(void)
1519 return i2c_add_driver(&lm85_driver
);
1522 static void __exit
sm_lm85_exit(void)
1524 i2c_del_driver(&lm85_driver
);
1527 MODULE_LICENSE("GPL");
1528 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1529 "Margit Schubert-While <margitsw@t-online.de>, "
1530 "Justin Thiessen <jthiessen@penguincomputing.com>");
1531 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1533 module_init(sm_lm85_init
);
1534 module_exit(sm_lm85_exit
);