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/err.h>
35 /* Addresses to scan */
36 static unsigned short normal_i2c
[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END
};
38 /* Insmod parameters */
39 I2C_CLIENT_INSMOD_6(lm85b
, lm85c
, adm1027
, adt7463
, emc6d100
, emc6d102
);
41 /* The LM85 registers */
43 #define LM85_REG_IN(nr) (0x20 + (nr))
44 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
45 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
47 #define LM85_REG_TEMP(nr) (0x25 + (nr))
48 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
49 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
51 /* Fan speeds are LSB, MSB (2 bytes) */
52 #define LM85_REG_FAN(nr) (0x28 + (nr) *2)
53 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) *2)
55 #define LM85_REG_PWM(nr) (0x30 + (nr))
57 #define ADT7463_REG_OPPOINT(nr) (0x33 + (nr))
59 #define ADT7463_REG_TMIN_CTL1 0x36
60 #define ADT7463_REG_TMIN_CTL2 0x37
62 #define LM85_REG_DEVICE 0x3d
63 #define LM85_REG_COMPANY 0x3e
64 #define LM85_REG_VERSTEP 0x3f
65 /* These are the recognized values for the above regs */
66 #define LM85_DEVICE_ADX 0x27
67 #define LM85_COMPANY_NATIONAL 0x01
68 #define LM85_COMPANY_ANALOG_DEV 0x41
69 #define LM85_COMPANY_SMSC 0x5c
70 #define LM85_VERSTEP_VMASK 0xf0
71 #define LM85_VERSTEP_GENERIC 0x60
72 #define LM85_VERSTEP_LM85C 0x60
73 #define LM85_VERSTEP_LM85B 0x62
74 #define LM85_VERSTEP_ADM1027 0x60
75 #define LM85_VERSTEP_ADT7463 0x62
76 #define LM85_VERSTEP_ADT7463C 0x6A
77 #define LM85_VERSTEP_EMC6D100_A0 0x60
78 #define LM85_VERSTEP_EMC6D100_A1 0x61
79 #define LM85_VERSTEP_EMC6D102 0x65
81 #define LM85_REG_CONFIG 0x40
83 #define LM85_REG_ALARM1 0x41
84 #define LM85_REG_ALARM2 0x42
86 #define LM85_REG_VID 0x43
88 /* Automated FAN control */
89 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
90 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
91 #define LM85_REG_AFAN_SPIKE1 0x62
92 #define LM85_REG_AFAN_SPIKE2 0x63
93 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
94 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
95 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
96 #define LM85_REG_AFAN_HYST1 0x6d
97 #define LM85_REG_AFAN_HYST2 0x6e
99 #define LM85_REG_TACH_MODE 0x74
100 #define LM85_REG_SPINUP_CTL 0x75
102 #define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr))
103 #define ADM1027_REG_CONFIG2 0x73
104 #define ADM1027_REG_INTMASK1 0x74
105 #define ADM1027_REG_INTMASK2 0x75
106 #define ADM1027_REG_EXTEND_ADC1 0x76
107 #define ADM1027_REG_EXTEND_ADC2 0x77
108 #define ADM1027_REG_CONFIG3 0x78
109 #define ADM1027_REG_FAN_PPR 0x7b
111 #define ADT7463_REG_THERM 0x79
112 #define ADT7463_REG_THERM_LIMIT 0x7A
114 #define EMC6D100_REG_ALARM3 0x7d
115 /* IN5, IN6 and IN7 */
116 #define EMC6D100_REG_IN(nr) (0x70 + ((nr)-5))
117 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr)-5) * 2)
118 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr)-5) * 2)
119 #define EMC6D102_REG_EXTEND_ADC1 0x85
120 #define EMC6D102_REG_EXTEND_ADC2 0x86
121 #define EMC6D102_REG_EXTEND_ADC3 0x87
122 #define EMC6D102_REG_EXTEND_ADC4 0x88
124 #define LM85_ALARM_IN0 0x0001
125 #define LM85_ALARM_IN1 0x0002
126 #define LM85_ALARM_IN2 0x0004
127 #define LM85_ALARM_IN3 0x0008
128 #define LM85_ALARM_TEMP1 0x0010
129 #define LM85_ALARM_TEMP2 0x0020
130 #define LM85_ALARM_TEMP3 0x0040
131 #define LM85_ALARM_ALARM2 0x0080
132 #define LM85_ALARM_IN4 0x0100
133 #define LM85_ALARM_RESERVED 0x0200
134 #define LM85_ALARM_FAN1 0x0400
135 #define LM85_ALARM_FAN2 0x0800
136 #define LM85_ALARM_FAN3 0x1000
137 #define LM85_ALARM_FAN4 0x2000
138 #define LM85_ALARM_TEMP1_FAULT 0x4000
139 #define LM85_ALARM_TEMP3_FAULT 0x8000
142 /* Conversions. Rounding and limit checking is only done on the TO_REG
143 variants. Note that you should be a bit careful with which arguments
144 these macros are called: arguments may be evaluated more than once.
147 /* IN are scaled acording to built-in resistors */
148 static int lm85_scaling
[] = { /* .001 Volts */
149 2500, 2250, 3300, 5000, 12000,
150 3300, 1500, 1800 /*EMC6D100*/
152 #define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from))
154 #define INS_TO_REG(n,val) \
155 SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255)
157 #define INSEXT_FROM_REG(n,val,ext,scale) \
158 SCALE((val)*(scale) + (ext),192*(scale),lm85_scaling[n])
160 #define INS_FROM_REG(n,val) INSEXT_FROM_REG(n,val,0,1)
162 /* FAN speed is measured using 90kHz clock */
163 #define FAN_TO_REG(val) (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534))
164 #define FAN_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:5400000/(val))
166 /* Temperature is reported in .001 degC increments */
167 #define TEMP_TO_REG(val) \
168 SENSORS_LIMIT(SCALE(val,1000,1),-127,127)
169 #define TEMPEXT_FROM_REG(val,ext,scale) \
170 SCALE((val)*scale + (ext),scale,1000)
171 #define TEMP_FROM_REG(val) \
172 TEMPEXT_FROM_REG(val,0,1)
174 #define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255))
175 #define PWM_FROM_REG(val) (val)
178 /* ZONEs have the following parameters:
179 * Limit (low) temp, 1. degC
180 * Hysteresis (below limit), 1. degC (0-15)
181 * Range of speed control, .1 degC (2-80)
182 * Critical (high) temp, 1. degC
184 * FAN PWMs have the following parameters:
185 * Reference Zone, 1, 2, 3, etc.
186 * Spinup time, .05 sec
187 * PWM value at limit/low temp, 1 count
188 * PWM Frequency, 1. Hz
189 * PWM is Min or OFF below limit, flag
190 * Invert PWM output, flag
192 * Some chips filter the temp, others the fan.
193 * Filter constant (or disabled) .1 seconds
196 /* These are the zone temperature range encodings in .001 degree C */
197 static int lm85_range_map
[] = {
198 2000, 2500, 3300, 4000, 5000, 6600,
199 8000, 10000, 13300, 16000, 20000, 26600,
200 32000, 40000, 53300, 80000
202 static int RANGE_TO_REG( int range
)
206 if ( range
< lm85_range_map
[0] ) {
208 } else if ( range
> lm85_range_map
[15] ) {
210 } else { /* find closest match */
211 for ( i
= 14 ; i
>= 0 ; --i
) {
212 if ( range
> lm85_range_map
[i
] ) { /* range bracketed */
213 if ((lm85_range_map
[i
+1] - range
) <
214 (range
- lm85_range_map
[i
])) {
224 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f])
226 /* These are the Acoustic Enhancement, or Temperature smoothing encodings
227 * NOTE: The enable/disable bit is INCLUDED in these encodings as the
228 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value
229 * is ignored, or set to 0.
231 /* These are the PWM frequency encodings */
232 static int lm85_freq_map
[] = { /* .1 Hz */
233 100, 150, 230, 300, 380, 470, 620, 940
235 static int FREQ_TO_REG( int freq
)
239 if( freq
>= lm85_freq_map
[7] ) { return 7 ; }
240 for( i
= 0 ; i
< 7 ; ++i
)
241 if( freq
<= lm85_freq_map
[i
] )
245 #define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07])
247 /* Since we can't use strings, I'm abusing these numbers
248 * to stand in for the following meanings:
249 * 1 -- PWM responds to Zone 1
250 * 2 -- PWM responds to Zone 2
251 * 3 -- PWM responds to Zone 3
252 * 23 -- PWM responds to the higher temp of Zone 2 or 3
253 * 123 -- PWM responds to highest of Zone 1, 2, or 3
254 * 0 -- PWM is always at 0% (ie, off)
255 * -1 -- PWM is always at 100%
256 * -2 -- PWM responds to manual control
259 static int lm85_zone_map
[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
260 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07])
262 static int ZONE_TO_REG( int zone
)
266 for( i
= 0 ; i
<= 7 ; ++i
)
267 if( zone
== lm85_zone_map
[i
] )
269 if( i
> 7 ) /* Not found. */
270 i
= 3; /* Always 100% */
271 return( (i
& 0x07)<<5 );
274 #define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15))
275 #define HYST_FROM_REG(val) ((val)*1000)
277 #define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127))
278 #define OFFSET_FROM_REG(val) ((val)*25)
280 #define PPR_MASK(fan) (0x03<<(fan *2))
281 #define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2))
282 #define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1)
284 /* Chip sampling rates
286 * Some sensors are not updated more frequently than once per second
287 * so it doesn't make sense to read them more often than that.
288 * We cache the results and return the saved data if the driver
289 * is called again before a second has elapsed.
291 * Also, there is significant configuration data for this chip
292 * given the automatic PWM fan control that is possible. There
293 * are about 47 bytes of config data to only 22 bytes of actual
294 * readings. So, we keep the config data up to date in the cache
295 * when it is written and only sample it once every 1 *minute*
297 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
298 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
300 /* For each registered LM85, we need to keep some data in memory. That
301 data is pointed to by lm85_list[NR]->data. The structure itself is
302 dynamically allocated, at the same time when a new lm85 client is
305 /* LM85 can automatically adjust fan speeds based on temperature
306 * This structure encapsulates an entire Zone config. There are
307 * three zones (one for each temperature input) on the lm85
310 s8 limit
; /* Low temp limit */
311 u8 hyst
; /* Low limit hysteresis. (0-15) */
312 u8 range
; /* Temp range, encoded */
313 s8 critical
; /* "All fans ON" temp limit */
314 u8 off_desired
; /* Actual "off" temperature specified. Preserved
315 * to prevent "drift" as other autofan control
318 u8 max_desired
; /* Actual "max" temperature specified. Preserved
319 * to prevent "drift" as other autofan control
324 struct lm85_autofan
{
325 u8 config
; /* Register value */
326 u8 freq
; /* PWM frequency, encoded */
327 u8 min_pwm
; /* Minimum PWM value, encoded */
328 u8 min_off
; /* Min PWM or OFF below "limit", flag */
332 struct i2c_client client
;
333 struct class_device
*class_dev
;
334 struct semaphore lock
;
337 struct semaphore update_lock
;
338 int valid
; /* !=0 if following fields are valid */
339 unsigned long last_reading
; /* In jiffies */
340 unsigned long last_config
; /* In jiffies */
342 u8 in
[8]; /* Register value */
343 u8 in_max
[8]; /* Register value */
344 u8 in_min
[8]; /* Register value */
345 s8 temp
[3]; /* Register value */
346 s8 temp_min
[3]; /* Register value */
347 s8 temp_max
[3]; /* Register value */
348 s8 temp_offset
[3]; /* Register value */
349 u16 fan
[4]; /* Register value */
350 u16 fan_min
[4]; /* Register value */
351 u8 pwm
[3]; /* Register value */
352 u8 spinup_ctl
; /* Register encoding, combined */
353 u8 tach_mode
; /* Register encoding, combined */
354 u8 temp_ext
[3]; /* Decoded values */
355 u8 in_ext
[8]; /* Decoded values */
356 u8 adc_scale
; /* ADC Extended bits scaling factor */
357 u8 fan_ppr
; /* Register value */
358 u8 smooth
[3]; /* Register encoding */
359 u8 vid
; /* Register value */
360 u8 vrm
; /* VRM version */
361 u8 syncpwm3
; /* Saved PWM3 for TACH 2,3,4 config */
362 u8 oppoint
[3]; /* Register value */
363 u16 tmin_ctl
; /* Register value */
364 unsigned long therm_total
; /* Cummulative therm count */
365 u8 therm_limit
; /* Register value */
366 u32 alarms
; /* Register encoding, combined */
367 struct lm85_autofan autofan
[3];
368 struct lm85_zone zone
[3];
371 static int lm85_attach_adapter(struct i2c_adapter
*adapter
);
372 static int lm85_detect(struct i2c_adapter
*adapter
, int address
,
374 static int lm85_detach_client(struct i2c_client
*client
);
376 static int lm85_read_value(struct i2c_client
*client
, u8
register);
377 static int lm85_write_value(struct i2c_client
*client
, u8
register, int value
);
378 static struct lm85_data
*lm85_update_device(struct device
*dev
);
379 static void lm85_init_client(struct i2c_client
*client
);
382 static struct i2c_driver lm85_driver
= {
386 .id
= I2C_DRIVERID_LM85
,
387 .attach_adapter
= lm85_attach_adapter
,
388 .detach_client
= lm85_detach_client
,
393 static ssize_t
show_fan(struct device
*dev
, char *buf
, int nr
)
395 struct lm85_data
*data
= lm85_update_device(dev
);
396 return sprintf(buf
,"%d\n", FAN_FROM_REG(data
->fan
[nr
]) );
398 static ssize_t
show_fan_min(struct device
*dev
, char *buf
, int nr
)
400 struct lm85_data
*data
= lm85_update_device(dev
);
401 return sprintf(buf
,"%d\n", FAN_FROM_REG(data
->fan_min
[nr
]) );
403 static ssize_t
set_fan_min(struct device
*dev
, const char *buf
,
404 size_t count
, int nr
)
406 struct i2c_client
*client
= to_i2c_client(dev
);
407 struct lm85_data
*data
= i2c_get_clientdata(client
);
408 long val
= simple_strtol(buf
, NULL
, 10);
410 down(&data
->update_lock
);
411 data
->fan_min
[nr
] = FAN_TO_REG(val
);
412 lm85_write_value(client
, LM85_REG_FAN_MIN(nr
), data
->fan_min
[nr
]);
413 up(&data
->update_lock
);
417 #define show_fan_offset(offset) \
418 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
420 return show_fan(dev, buf, offset - 1); \
422 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
424 return show_fan_min(dev, buf, offset - 1); \
426 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
427 const char *buf, size_t count) \
429 return set_fan_min(dev, buf, count, offset - 1); \
431 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
433 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
434 show_fan_##offset##_min, set_fan_##offset##_min);
441 /* vid, vrm, alarms */
443 static ssize_t
show_vid_reg(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
445 struct lm85_data
*data
= lm85_update_device(dev
);
448 if (data
->type
== adt7463
&& (data
->vid
& 0x80)) {
449 /* 6-pin VID (VRM 10) */
450 vid
= vid_from_reg(data
->vid
& 0x3f, data
->vrm
);
452 /* 5-pin VID (VRM 9) */
453 vid
= vid_from_reg(data
->vid
& 0x1f, data
->vrm
);
456 return sprintf(buf
, "%d\n", vid
);
459 static DEVICE_ATTR(cpu0_vid
, S_IRUGO
, show_vid_reg
, NULL
);
461 static ssize_t
show_vrm_reg(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
463 struct lm85_data
*data
= lm85_update_device(dev
);
464 return sprintf(buf
, "%ld\n", (long) data
->vrm
);
467 static ssize_t
store_vrm_reg(struct device
*dev
, struct device_attribute
*attr
, const char *buf
, size_t count
)
469 struct i2c_client
*client
= to_i2c_client(dev
);
470 struct lm85_data
*data
= i2c_get_clientdata(client
);
473 val
= simple_strtoul(buf
, NULL
, 10);
478 static DEVICE_ATTR(vrm
, S_IRUGO
| S_IWUSR
, show_vrm_reg
, store_vrm_reg
);
480 static ssize_t
show_alarms_reg(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
482 struct lm85_data
*data
= lm85_update_device(dev
);
483 return sprintf(buf
, "%u\n", data
->alarms
);
486 static DEVICE_ATTR(alarms
, S_IRUGO
, show_alarms_reg
, NULL
);
490 static ssize_t
show_pwm(struct device
*dev
, char *buf
, int nr
)
492 struct lm85_data
*data
= lm85_update_device(dev
);
493 return sprintf(buf
,"%d\n", PWM_FROM_REG(data
->pwm
[nr
]) );
495 static ssize_t
set_pwm(struct device
*dev
, const char *buf
,
496 size_t count
, int nr
)
498 struct i2c_client
*client
= to_i2c_client(dev
);
499 struct lm85_data
*data
= i2c_get_clientdata(client
);
500 long val
= simple_strtol(buf
, NULL
, 10);
502 down(&data
->update_lock
);
503 data
->pwm
[nr
] = PWM_TO_REG(val
);
504 lm85_write_value(client
, LM85_REG_PWM(nr
), data
->pwm
[nr
]);
505 up(&data
->update_lock
);
508 static ssize_t
show_pwm_enable(struct device
*dev
, char *buf
, int nr
)
510 struct lm85_data
*data
= lm85_update_device(dev
);
513 pwm_zone
= ZONE_FROM_REG(data
->autofan
[nr
].config
);
514 return sprintf(buf
,"%d\n", (pwm_zone
!= 0 && pwm_zone
!= -1) );
517 #define show_pwm_reg(offset) \
518 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
520 return show_pwm(dev, buf, offset - 1); \
522 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \
523 const char *buf, size_t count) \
525 return set_pwm(dev, buf, count, offset - 1); \
527 static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \
529 return show_pwm_enable(dev, buf, offset - 1); \
531 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
532 show_pwm_##offset, set_pwm_##offset); \
533 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \
534 show_pwm_enable##offset, NULL);
542 static ssize_t
show_in(struct device
*dev
, char *buf
, int nr
)
544 struct lm85_data
*data
= lm85_update_device(dev
);
545 return sprintf( buf
, "%d\n", INSEXT_FROM_REG(nr
,
550 static ssize_t
show_in_min(struct device
*dev
, char *buf
, int nr
)
552 struct lm85_data
*data
= lm85_update_device(dev
);
553 return sprintf(buf
,"%d\n", INS_FROM_REG(nr
, data
->in_min
[nr
]) );
555 static ssize_t
set_in_min(struct device
*dev
, const char *buf
,
556 size_t count
, int nr
)
558 struct i2c_client
*client
= to_i2c_client(dev
);
559 struct lm85_data
*data
= i2c_get_clientdata(client
);
560 long val
= simple_strtol(buf
, NULL
, 10);
562 down(&data
->update_lock
);
563 data
->in_min
[nr
] = INS_TO_REG(nr
, val
);
564 lm85_write_value(client
, LM85_REG_IN_MIN(nr
), data
->in_min
[nr
]);
565 up(&data
->update_lock
);
568 static ssize_t
show_in_max(struct device
*dev
, char *buf
, int nr
)
570 struct lm85_data
*data
= lm85_update_device(dev
);
571 return sprintf(buf
,"%d\n", INS_FROM_REG(nr
, data
->in_max
[nr
]) );
573 static ssize_t
set_in_max(struct device
*dev
, const char *buf
,
574 size_t count
, int nr
)
576 struct i2c_client
*client
= to_i2c_client(dev
);
577 struct lm85_data
*data
= i2c_get_clientdata(client
);
578 long val
= simple_strtol(buf
, NULL
, 10);
580 down(&data
->update_lock
);
581 data
->in_max
[nr
] = INS_TO_REG(nr
, val
);
582 lm85_write_value(client
, LM85_REG_IN_MAX(nr
), data
->in_max
[nr
]);
583 up(&data
->update_lock
);
586 #define show_in_reg(offset) \
587 static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
589 return show_in(dev, buf, offset); \
591 static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
593 return show_in_min(dev, buf, offset); \
595 static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
597 return show_in_max(dev, buf, offset); \
599 static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \
600 const char *buf, size_t count) \
602 return set_in_min(dev, buf, count, offset); \
604 static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \
605 const char *buf, size_t count) \
607 return set_in_max(dev, buf, count, offset); \
609 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \
611 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
612 show_in_##offset##_min, set_in_##offset##_min); \
613 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
614 show_in_##offset##_max, set_in_##offset##_max);
624 static ssize_t
show_temp(struct device
*dev
, char *buf
, int nr
)
626 struct lm85_data
*data
= lm85_update_device(dev
);
627 return sprintf(buf
,"%d\n", TEMPEXT_FROM_REG(data
->temp
[nr
],
631 static ssize_t
show_temp_min(struct device
*dev
, char *buf
, int nr
)
633 struct lm85_data
*data
= lm85_update_device(dev
);
634 return sprintf(buf
,"%d\n", TEMP_FROM_REG(data
->temp_min
[nr
]) );
636 static ssize_t
set_temp_min(struct device
*dev
, const char *buf
,
637 size_t count
, int nr
)
639 struct i2c_client
*client
= to_i2c_client(dev
);
640 struct lm85_data
*data
= i2c_get_clientdata(client
);
641 long val
= simple_strtol(buf
, NULL
, 10);
643 down(&data
->update_lock
);
644 data
->temp_min
[nr
] = TEMP_TO_REG(val
);
645 lm85_write_value(client
, LM85_REG_TEMP_MIN(nr
), data
->temp_min
[nr
]);
646 up(&data
->update_lock
);
649 static ssize_t
show_temp_max(struct device
*dev
, char *buf
, int nr
)
651 struct lm85_data
*data
= lm85_update_device(dev
);
652 return sprintf(buf
,"%d\n", TEMP_FROM_REG(data
->temp_max
[nr
]) );
654 static ssize_t
set_temp_max(struct device
*dev
, const char *buf
,
655 size_t count
, int nr
)
657 struct i2c_client
*client
= to_i2c_client(dev
);
658 struct lm85_data
*data
= i2c_get_clientdata(client
);
659 long val
= simple_strtol(buf
, NULL
, 10);
661 down(&data
->update_lock
);
662 data
->temp_max
[nr
] = TEMP_TO_REG(val
);
663 lm85_write_value(client
, LM85_REG_TEMP_MAX(nr
), data
->temp_max
[nr
]);
664 up(&data
->update_lock
);
667 #define show_temp_reg(offset) \
668 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
670 return show_temp(dev, buf, offset - 1); \
672 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
674 return show_temp_min(dev, buf, offset - 1); \
676 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
678 return show_temp_max(dev, buf, offset - 1); \
680 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
681 const char *buf, size_t count) \
683 return set_temp_min(dev, buf, count, offset - 1); \
685 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
686 const char *buf, size_t count) \
688 return set_temp_max(dev, buf, count, offset - 1); \
690 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
692 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
693 show_temp_##offset##_min, set_temp_##offset##_min); \
694 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
695 show_temp_##offset##_max, set_temp_##offset##_max);
702 /* Automatic PWM control */
704 static ssize_t
show_pwm_auto_channels(struct device
*dev
, char *buf
, int nr
)
706 struct lm85_data
*data
= lm85_update_device(dev
);
707 return sprintf(buf
,"%d\n", ZONE_FROM_REG(data
->autofan
[nr
].config
));
709 static ssize_t
set_pwm_auto_channels(struct device
*dev
, const char *buf
,
710 size_t count
, int nr
)
712 struct i2c_client
*client
= to_i2c_client(dev
);
713 struct lm85_data
*data
= i2c_get_clientdata(client
);
714 long val
= simple_strtol(buf
, NULL
, 10);
716 down(&data
->update_lock
);
717 data
->autofan
[nr
].config
= (data
->autofan
[nr
].config
& (~0xe0))
719 lm85_write_value(client
, LM85_REG_AFAN_CONFIG(nr
),
720 data
->autofan
[nr
].config
);
721 up(&data
->update_lock
);
724 static ssize_t
show_pwm_auto_pwm_min(struct device
*dev
, char *buf
, int nr
)
726 struct lm85_data
*data
= lm85_update_device(dev
);
727 return sprintf(buf
,"%d\n", PWM_FROM_REG(data
->autofan
[nr
].min_pwm
));
729 static ssize_t
set_pwm_auto_pwm_min(struct device
*dev
, const char *buf
,
730 size_t count
, int nr
)
732 struct i2c_client
*client
= to_i2c_client(dev
);
733 struct lm85_data
*data
= i2c_get_clientdata(client
);
734 long val
= simple_strtol(buf
, NULL
, 10);
736 down(&data
->update_lock
);
737 data
->autofan
[nr
].min_pwm
= PWM_TO_REG(val
);
738 lm85_write_value(client
, LM85_REG_AFAN_MINPWM(nr
),
739 data
->autofan
[nr
].min_pwm
);
740 up(&data
->update_lock
);
743 static ssize_t
show_pwm_auto_pwm_minctl(struct device
*dev
, char *buf
, int nr
)
745 struct lm85_data
*data
= lm85_update_device(dev
);
746 return sprintf(buf
,"%d\n", data
->autofan
[nr
].min_off
);
748 static ssize_t
set_pwm_auto_pwm_minctl(struct device
*dev
, const char *buf
,
749 size_t count
, int nr
)
751 struct i2c_client
*client
= to_i2c_client(dev
);
752 struct lm85_data
*data
= i2c_get_clientdata(client
);
753 long val
= simple_strtol(buf
, NULL
, 10);
755 down(&data
->update_lock
);
756 data
->autofan
[nr
].min_off
= val
;
757 lm85_write_value(client
, LM85_REG_AFAN_SPIKE1
, data
->smooth
[0]
759 | (data
->autofan
[0].min_off
? 0x20 : 0)
760 | (data
->autofan
[1].min_off
? 0x40 : 0)
761 | (data
->autofan
[2].min_off
? 0x80 : 0)
763 up(&data
->update_lock
);
766 static ssize_t
show_pwm_auto_pwm_freq(struct device
*dev
, char *buf
, int nr
)
768 struct lm85_data
*data
= lm85_update_device(dev
);
769 return sprintf(buf
,"%d\n", FREQ_FROM_REG(data
->autofan
[nr
].freq
));
771 static ssize_t
set_pwm_auto_pwm_freq(struct device
*dev
, const char *buf
,
772 size_t count
, int nr
)
774 struct i2c_client
*client
= to_i2c_client(dev
);
775 struct lm85_data
*data
= i2c_get_clientdata(client
);
776 long val
= simple_strtol(buf
, NULL
, 10);
778 down(&data
->update_lock
);
779 data
->autofan
[nr
].freq
= FREQ_TO_REG(val
);
780 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
781 (data
->zone
[nr
].range
<< 4)
782 | data
->autofan
[nr
].freq
784 up(&data
->update_lock
);
787 #define pwm_auto(offset) \
788 static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \
791 return show_pwm_auto_channels(dev, buf, offset - 1); \
793 static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \
794 const char *buf, size_t count) \
796 return set_pwm_auto_channels(dev, buf, count, offset - 1); \
798 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \
801 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \
803 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \
804 const char *buf, size_t count) \
806 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \
808 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \
811 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \
813 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \
814 const char *buf, size_t count) \
816 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \
818 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \
821 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \
823 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \
824 const char *buf, size_t count) \
826 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \
828 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \
829 show_pwm##offset##_auto_channels, \
830 set_pwm##offset##_auto_channels); \
831 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \
832 show_pwm##offset##_auto_pwm_min, \
833 set_pwm##offset##_auto_pwm_min); \
834 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \
835 show_pwm##offset##_auto_pwm_minctl, \
836 set_pwm##offset##_auto_pwm_minctl); \
837 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \
838 show_pwm##offset##_auto_pwm_freq, \
839 set_pwm##offset##_auto_pwm_freq);
844 /* Temperature settings for automatic PWM control */
846 static ssize_t
show_temp_auto_temp_off(struct device
*dev
, char *buf
, int nr
)
848 struct lm85_data
*data
= lm85_update_device(dev
);
849 return sprintf(buf
,"%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
) -
850 HYST_FROM_REG(data
->zone
[nr
].hyst
));
852 static ssize_t
set_temp_auto_temp_off(struct device
*dev
, const char *buf
,
853 size_t count
, int nr
)
855 struct i2c_client
*client
= to_i2c_client(dev
);
856 struct lm85_data
*data
= i2c_get_clientdata(client
);
858 long val
= simple_strtol(buf
, NULL
, 10);
860 down(&data
->update_lock
);
861 min
= TEMP_FROM_REG(data
->zone
[nr
].limit
);
862 data
->zone
[nr
].off_desired
= TEMP_TO_REG(val
);
863 data
->zone
[nr
].hyst
= HYST_TO_REG(min
- val
);
864 if ( nr
== 0 || nr
== 1 ) {
865 lm85_write_value(client
, LM85_REG_AFAN_HYST1
,
866 (data
->zone
[0].hyst
<< 4)
870 lm85_write_value(client
, LM85_REG_AFAN_HYST2
,
871 (data
->zone
[2].hyst
<< 4)
874 up(&data
->update_lock
);
877 static ssize_t
show_temp_auto_temp_min(struct device
*dev
, char *buf
, int nr
)
879 struct lm85_data
*data
= lm85_update_device(dev
);
880 return sprintf(buf
,"%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
) );
882 static ssize_t
set_temp_auto_temp_min(struct device
*dev
, const char *buf
,
883 size_t count
, int nr
)
885 struct i2c_client
*client
= to_i2c_client(dev
);
886 struct lm85_data
*data
= i2c_get_clientdata(client
);
887 long val
= simple_strtol(buf
, NULL
, 10);
889 down(&data
->update_lock
);
890 data
->zone
[nr
].limit
= TEMP_TO_REG(val
);
891 lm85_write_value(client
, LM85_REG_AFAN_LIMIT(nr
),
892 data
->zone
[nr
].limit
);
894 /* Update temp_auto_max and temp_auto_range */
895 data
->zone
[nr
].range
= RANGE_TO_REG(
896 TEMP_FROM_REG(data
->zone
[nr
].max_desired
) -
897 TEMP_FROM_REG(data
->zone
[nr
].limit
));
898 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
899 ((data
->zone
[nr
].range
& 0x0f) << 4)
900 | (data
->autofan
[nr
].freq
& 0x07));
902 /* Update temp_auto_hyst and temp_auto_off */
903 data
->zone
[nr
].hyst
= HYST_TO_REG(TEMP_FROM_REG(
904 data
->zone
[nr
].limit
) - TEMP_FROM_REG(
905 data
->zone
[nr
].off_desired
));
906 if ( nr
== 0 || nr
== 1 ) {
907 lm85_write_value(client
, LM85_REG_AFAN_HYST1
,
908 (data
->zone
[0].hyst
<< 4)
912 lm85_write_value(client
, LM85_REG_AFAN_HYST2
,
913 (data
->zone
[2].hyst
<< 4)
916 up(&data
->update_lock
);
919 static ssize_t
show_temp_auto_temp_max(struct device
*dev
, char *buf
, int nr
)
921 struct lm85_data
*data
= lm85_update_device(dev
);
922 return sprintf(buf
,"%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
) +
923 RANGE_FROM_REG(data
->zone
[nr
].range
));
925 static ssize_t
set_temp_auto_temp_max(struct device
*dev
, const char *buf
,
926 size_t count
, int nr
)
928 struct i2c_client
*client
= to_i2c_client(dev
);
929 struct lm85_data
*data
= i2c_get_clientdata(client
);
931 long val
= simple_strtol(buf
, NULL
, 10);
933 down(&data
->update_lock
);
934 min
= TEMP_FROM_REG(data
->zone
[nr
].limit
);
935 data
->zone
[nr
].max_desired
= TEMP_TO_REG(val
);
936 data
->zone
[nr
].range
= RANGE_TO_REG(
938 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
939 ((data
->zone
[nr
].range
& 0x0f) << 4)
940 | (data
->autofan
[nr
].freq
& 0x07));
941 up(&data
->update_lock
);
944 static ssize_t
show_temp_auto_temp_crit(struct device
*dev
, char *buf
, int nr
)
946 struct lm85_data
*data
= lm85_update_device(dev
);
947 return sprintf(buf
,"%d\n", TEMP_FROM_REG(data
->zone
[nr
].critical
));
949 static ssize_t
set_temp_auto_temp_crit(struct device
*dev
, const char *buf
,
950 size_t count
, int nr
)
952 struct i2c_client
*client
= to_i2c_client(dev
);
953 struct lm85_data
*data
= i2c_get_clientdata(client
);
954 long val
= simple_strtol(buf
, NULL
, 10);
956 down(&data
->update_lock
);
957 data
->zone
[nr
].critical
= TEMP_TO_REG(val
);
958 lm85_write_value(client
, LM85_REG_AFAN_CRITICAL(nr
),
959 data
->zone
[nr
].critical
);
960 up(&data
->update_lock
);
963 #define temp_auto(offset) \
964 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \
967 return show_temp_auto_temp_off(dev, buf, offset - 1); \
969 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \
970 const char *buf, size_t count) \
972 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \
974 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \
977 return show_temp_auto_temp_min(dev, buf, offset - 1); \
979 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \
980 const char *buf, size_t count) \
982 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \
984 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \
987 return show_temp_auto_temp_max(dev, buf, offset - 1); \
989 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \
990 const char *buf, size_t count) \
992 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \
994 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \
997 return show_temp_auto_temp_crit(dev, buf, offset - 1); \
999 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \
1000 const char *buf, size_t count) \
1002 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \
1004 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \
1005 show_temp##offset##_auto_temp_off, \
1006 set_temp##offset##_auto_temp_off); \
1007 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \
1008 show_temp##offset##_auto_temp_min, \
1009 set_temp##offset##_auto_temp_min); \
1010 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \
1011 show_temp##offset##_auto_temp_max, \
1012 set_temp##offset##_auto_temp_max); \
1013 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \
1014 show_temp##offset##_auto_temp_crit, \
1015 set_temp##offset##_auto_temp_crit);
1020 static int lm85_attach_adapter(struct i2c_adapter
*adapter
)
1022 if (!(adapter
->class & I2C_CLASS_HWMON
))
1024 return i2c_probe(adapter
, &addr_data
, lm85_detect
);
1027 static int lm85_detect(struct i2c_adapter
*adapter
, int address
,
1030 int company
, verstep
;
1031 struct i2c_client
*new_client
= NULL
;
1032 struct lm85_data
*data
;
1034 const char *type_name
= "";
1036 if (!i2c_check_functionality(adapter
,
1037 I2C_FUNC_SMBUS_BYTE_DATA
)) {
1038 /* We need to be able to do byte I/O */
1042 /* OK. For now, we presume we have a valid client. We now create the
1043 client structure, even though we cannot fill it completely yet.
1044 But it allows us to access lm85_{read,write}_value. */
1046 if (!(data
= kzalloc(sizeof(struct lm85_data
), GFP_KERNEL
))) {
1051 new_client
= &data
->client
;
1052 i2c_set_clientdata(new_client
, data
);
1053 new_client
->addr
= address
;
1054 new_client
->adapter
= adapter
;
1055 new_client
->driver
= &lm85_driver
;
1056 new_client
->flags
= 0;
1058 /* Now, we do the remaining detection. */
1060 company
= lm85_read_value(new_client
, LM85_REG_COMPANY
);
1061 verstep
= lm85_read_value(new_client
, LM85_REG_VERSTEP
);
1063 dev_dbg(&adapter
->dev
, "Detecting device at %d,0x%02x with"
1064 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1065 i2c_adapter_id(new_client
->adapter
), new_client
->addr
,
1068 /* If auto-detecting, Determine the chip type. */
1070 dev_dbg(&adapter
->dev
, "Autodetecting device at %d,0x%02x ...\n",
1071 i2c_adapter_id(adapter
), address
);
1072 if( company
== LM85_COMPANY_NATIONAL
1073 && verstep
== LM85_VERSTEP_LM85C
) {
1075 } else if( company
== LM85_COMPANY_NATIONAL
1076 && verstep
== LM85_VERSTEP_LM85B
) {
1078 } else if( company
== LM85_COMPANY_NATIONAL
1079 && (verstep
& LM85_VERSTEP_VMASK
) == LM85_VERSTEP_GENERIC
) {
1080 dev_err(&adapter
->dev
, "Unrecognized version/stepping 0x%02x"
1081 " Defaulting to LM85.\n", verstep
);
1083 } else if( company
== LM85_COMPANY_ANALOG_DEV
1084 && verstep
== LM85_VERSTEP_ADM1027
) {
1086 } else if( company
== LM85_COMPANY_ANALOG_DEV
1087 && (verstep
== LM85_VERSTEP_ADT7463
1088 || verstep
== LM85_VERSTEP_ADT7463C
) ) {
1090 } else if( company
== LM85_COMPANY_ANALOG_DEV
1091 && (verstep
& LM85_VERSTEP_VMASK
) == LM85_VERSTEP_GENERIC
) {
1092 dev_err(&adapter
->dev
, "Unrecognized version/stepping 0x%02x"
1093 " Defaulting to Generic LM85.\n", verstep
);
1095 } else if( company
== LM85_COMPANY_SMSC
1096 && (verstep
== LM85_VERSTEP_EMC6D100_A0
1097 || verstep
== LM85_VERSTEP_EMC6D100_A1
) ) {
1098 /* Unfortunately, we can't tell a '100 from a '101
1099 * from the registers. Since a '101 is a '100
1100 * in a package with fewer pins and therefore no
1101 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1102 * inputs read 0, then it's a '101.
1105 } else if( company
== LM85_COMPANY_SMSC
1106 && verstep
== LM85_VERSTEP_EMC6D102
) {
1108 } else if( company
== LM85_COMPANY_SMSC
1109 && (verstep
& LM85_VERSTEP_VMASK
) == LM85_VERSTEP_GENERIC
) {
1110 dev_err(&adapter
->dev
, "lm85: Detected SMSC chip\n");
1111 dev_err(&adapter
->dev
, "lm85: Unrecognized version/stepping 0x%02x"
1112 " Defaulting to Generic LM85.\n", verstep
);
1114 } else if( kind
== any_chip
1115 && (verstep
& LM85_VERSTEP_VMASK
) == LM85_VERSTEP_GENERIC
) {
1116 dev_err(&adapter
->dev
, "Generic LM85 Version 6 detected\n");
1117 /* Leave kind as "any_chip" */
1119 dev_dbg(&adapter
->dev
, "Autodetection failed\n");
1120 /* Not an LM85 ... */
1121 if( kind
== any_chip
) { /* User used force=x,y */
1122 dev_err(&adapter
->dev
, "Generic LM85 Version 6 not"
1123 " found at %d,0x%02x. Try force_lm85c.\n",
1124 i2c_adapter_id(adapter
), address
);
1131 /* Fill in the chip specific driver values */
1132 if ( kind
== any_chip
) {
1134 } else if ( kind
== lm85b
) {
1135 type_name
= "lm85b";
1136 } else if ( kind
== lm85c
) {
1137 type_name
= "lm85c";
1138 } else if ( kind
== adm1027
) {
1139 type_name
= "adm1027";
1140 } else if ( kind
== adt7463
) {
1141 type_name
= "adt7463";
1142 } else if ( kind
== emc6d100
){
1143 type_name
= "emc6d100";
1144 } else if ( kind
== emc6d102
) {
1145 type_name
= "emc6d102";
1147 strlcpy(new_client
->name
, type_name
, I2C_NAME_SIZE
);
1149 /* Fill in the remaining client fields */
1152 init_MUTEX(&data
->update_lock
);
1154 /* Tell the I2C layer a new client has arrived */
1155 if ((err
= i2c_attach_client(new_client
)))
1158 /* Set the VRM version */
1159 data
->vrm
= vid_which_vrm();
1161 /* Initialize the LM85 chip */
1162 lm85_init_client(new_client
);
1164 /* Register sysfs hooks */
1165 data
->class_dev
= hwmon_device_register(&new_client
->dev
);
1166 if (IS_ERR(data
->class_dev
)) {
1167 err
= PTR_ERR(data
->class_dev
);
1171 device_create_file(&new_client
->dev
, &dev_attr_fan1_input
);
1172 device_create_file(&new_client
->dev
, &dev_attr_fan2_input
);
1173 device_create_file(&new_client
->dev
, &dev_attr_fan3_input
);
1174 device_create_file(&new_client
->dev
, &dev_attr_fan4_input
);
1175 device_create_file(&new_client
->dev
, &dev_attr_fan1_min
);
1176 device_create_file(&new_client
->dev
, &dev_attr_fan2_min
);
1177 device_create_file(&new_client
->dev
, &dev_attr_fan3_min
);
1178 device_create_file(&new_client
->dev
, &dev_attr_fan4_min
);
1179 device_create_file(&new_client
->dev
, &dev_attr_pwm1
);
1180 device_create_file(&new_client
->dev
, &dev_attr_pwm2
);
1181 device_create_file(&new_client
->dev
, &dev_attr_pwm3
);
1182 device_create_file(&new_client
->dev
, &dev_attr_pwm1_enable
);
1183 device_create_file(&new_client
->dev
, &dev_attr_pwm2_enable
);
1184 device_create_file(&new_client
->dev
, &dev_attr_pwm3_enable
);
1185 device_create_file(&new_client
->dev
, &dev_attr_in0_input
);
1186 device_create_file(&new_client
->dev
, &dev_attr_in1_input
);
1187 device_create_file(&new_client
->dev
, &dev_attr_in2_input
);
1188 device_create_file(&new_client
->dev
, &dev_attr_in3_input
);
1189 device_create_file(&new_client
->dev
, &dev_attr_in0_min
);
1190 device_create_file(&new_client
->dev
, &dev_attr_in1_min
);
1191 device_create_file(&new_client
->dev
, &dev_attr_in2_min
);
1192 device_create_file(&new_client
->dev
, &dev_attr_in3_min
);
1193 device_create_file(&new_client
->dev
, &dev_attr_in0_max
);
1194 device_create_file(&new_client
->dev
, &dev_attr_in1_max
);
1195 device_create_file(&new_client
->dev
, &dev_attr_in2_max
);
1196 device_create_file(&new_client
->dev
, &dev_attr_in3_max
);
1197 device_create_file(&new_client
->dev
, &dev_attr_temp1_input
);
1198 device_create_file(&new_client
->dev
, &dev_attr_temp2_input
);
1199 device_create_file(&new_client
->dev
, &dev_attr_temp3_input
);
1200 device_create_file(&new_client
->dev
, &dev_attr_temp1_min
);
1201 device_create_file(&new_client
->dev
, &dev_attr_temp2_min
);
1202 device_create_file(&new_client
->dev
, &dev_attr_temp3_min
);
1203 device_create_file(&new_client
->dev
, &dev_attr_temp1_max
);
1204 device_create_file(&new_client
->dev
, &dev_attr_temp2_max
);
1205 device_create_file(&new_client
->dev
, &dev_attr_temp3_max
);
1206 device_create_file(&new_client
->dev
, &dev_attr_vrm
);
1207 device_create_file(&new_client
->dev
, &dev_attr_cpu0_vid
);
1208 device_create_file(&new_client
->dev
, &dev_attr_alarms
);
1209 device_create_file(&new_client
->dev
, &dev_attr_pwm1_auto_channels
);
1210 device_create_file(&new_client
->dev
, &dev_attr_pwm2_auto_channels
);
1211 device_create_file(&new_client
->dev
, &dev_attr_pwm3_auto_channels
);
1212 device_create_file(&new_client
->dev
, &dev_attr_pwm1_auto_pwm_min
);
1213 device_create_file(&new_client
->dev
, &dev_attr_pwm2_auto_pwm_min
);
1214 device_create_file(&new_client
->dev
, &dev_attr_pwm3_auto_pwm_min
);
1215 device_create_file(&new_client
->dev
, &dev_attr_pwm1_auto_pwm_minctl
);
1216 device_create_file(&new_client
->dev
, &dev_attr_pwm2_auto_pwm_minctl
);
1217 device_create_file(&new_client
->dev
, &dev_attr_pwm3_auto_pwm_minctl
);
1218 device_create_file(&new_client
->dev
, &dev_attr_pwm1_auto_pwm_freq
);
1219 device_create_file(&new_client
->dev
, &dev_attr_pwm2_auto_pwm_freq
);
1220 device_create_file(&new_client
->dev
, &dev_attr_pwm3_auto_pwm_freq
);
1221 device_create_file(&new_client
->dev
, &dev_attr_temp1_auto_temp_off
);
1222 device_create_file(&new_client
->dev
, &dev_attr_temp2_auto_temp_off
);
1223 device_create_file(&new_client
->dev
, &dev_attr_temp3_auto_temp_off
);
1224 device_create_file(&new_client
->dev
, &dev_attr_temp1_auto_temp_min
);
1225 device_create_file(&new_client
->dev
, &dev_attr_temp2_auto_temp_min
);
1226 device_create_file(&new_client
->dev
, &dev_attr_temp3_auto_temp_min
);
1227 device_create_file(&new_client
->dev
, &dev_attr_temp1_auto_temp_max
);
1228 device_create_file(&new_client
->dev
, &dev_attr_temp2_auto_temp_max
);
1229 device_create_file(&new_client
->dev
, &dev_attr_temp3_auto_temp_max
);
1230 device_create_file(&new_client
->dev
, &dev_attr_temp1_auto_temp_crit
);
1231 device_create_file(&new_client
->dev
, &dev_attr_temp2_auto_temp_crit
);
1232 device_create_file(&new_client
->dev
, &dev_attr_temp3_auto_temp_crit
);
1234 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1235 as a sixth digital VID input rather than an analog input. */
1236 data
->vid
= lm85_read_value(new_client
, LM85_REG_VID
);
1237 if (!(kind
== adt7463
&& (data
->vid
& 0x80))) {
1238 device_create_file(&new_client
->dev
, &dev_attr_in4_input
);
1239 device_create_file(&new_client
->dev
, &dev_attr_in4_min
);
1240 device_create_file(&new_client
->dev
, &dev_attr_in4_max
);
1245 /* Error out and cleanup code */
1247 i2c_detach_client(new_client
);
1254 static int lm85_detach_client(struct i2c_client
*client
)
1256 struct lm85_data
*data
= i2c_get_clientdata(client
);
1257 hwmon_device_unregister(data
->class_dev
);
1258 i2c_detach_client(client
);
1264 static int lm85_read_value(struct i2c_client
*client
, u8 reg
)
1268 /* What size location is it? */
1270 case LM85_REG_FAN(0) : /* Read WORD data */
1271 case LM85_REG_FAN(1) :
1272 case LM85_REG_FAN(2) :
1273 case LM85_REG_FAN(3) :
1274 case LM85_REG_FAN_MIN(0) :
1275 case LM85_REG_FAN_MIN(1) :
1276 case LM85_REG_FAN_MIN(2) :
1277 case LM85_REG_FAN_MIN(3) :
1278 case LM85_REG_ALARM1
: /* Read both bytes at once */
1279 res
= i2c_smbus_read_byte_data(client
, reg
) & 0xff ;
1280 res
|= i2c_smbus_read_byte_data(client
, reg
+1) << 8 ;
1282 case ADT7463_REG_TMIN_CTL1
: /* Read WORD MSB, LSB */
1283 res
= i2c_smbus_read_byte_data(client
, reg
) << 8 ;
1284 res
|= i2c_smbus_read_byte_data(client
, reg
+1) & 0xff ;
1286 default: /* Read BYTE data */
1287 res
= i2c_smbus_read_byte_data(client
, reg
);
1294 static int lm85_write_value(struct i2c_client
*client
, u8 reg
, int value
)
1299 case LM85_REG_FAN(0) : /* Write WORD data */
1300 case LM85_REG_FAN(1) :
1301 case LM85_REG_FAN(2) :
1302 case LM85_REG_FAN(3) :
1303 case LM85_REG_FAN_MIN(0) :
1304 case LM85_REG_FAN_MIN(1) :
1305 case LM85_REG_FAN_MIN(2) :
1306 case LM85_REG_FAN_MIN(3) :
1307 /* NOTE: ALARM is read only, so not included here */
1308 res
= i2c_smbus_write_byte_data(client
, reg
, value
& 0xff) ;
1309 res
|= i2c_smbus_write_byte_data(client
, reg
+1, (value
>>8) & 0xff) ;
1311 case ADT7463_REG_TMIN_CTL1
: /* Write WORD MSB, LSB */
1312 res
= i2c_smbus_write_byte_data(client
, reg
, (value
>>8) & 0xff);
1313 res
|= i2c_smbus_write_byte_data(client
, reg
+1, value
& 0xff) ;
1315 default: /* Write BYTE data */
1316 res
= i2c_smbus_write_byte_data(client
, reg
, value
);
1323 static void lm85_init_client(struct i2c_client
*client
)
1326 struct lm85_data
*data
= i2c_get_clientdata(client
);
1328 dev_dbg(&client
->dev
, "Initializing device\n");
1330 /* Warn if part was not "READY" */
1331 value
= lm85_read_value(client
, LM85_REG_CONFIG
);
1332 dev_dbg(&client
->dev
, "LM85_REG_CONFIG is: 0x%02x\n", value
);
1333 if( value
& 0x02 ) {
1334 dev_err(&client
->dev
, "Client (%d,0x%02x) config is locked.\n",
1335 i2c_adapter_id(client
->adapter
), client
->addr
);
1337 if( ! (value
& 0x04) ) {
1338 dev_err(&client
->dev
, "Client (%d,0x%02x) is not ready.\n",
1339 i2c_adapter_id(client
->adapter
), client
->addr
);
1342 && ( data
->type
== adm1027
1343 || data
->type
== adt7463
) ) {
1344 dev_err(&client
->dev
, "Client (%d,0x%02x) VxI mode is set. "
1345 "Please report this to the lm85 maintainer.\n",
1346 i2c_adapter_id(client
->adapter
), client
->addr
);
1349 /* WE INTENTIONALLY make no changes to the limits,
1350 * offsets, pwms, fans and zones. If they were
1351 * configured, we don't want to mess with them.
1352 * If they weren't, the default is 100% PWM, no
1353 * control and will suffice until 'sensors -s'
1354 * can be run by the user.
1357 /* Start monitoring */
1358 value
= lm85_read_value(client
, LM85_REG_CONFIG
);
1359 /* Try to clear LOCK, Set START, save everything else */
1360 value
= (value
& ~ 0x02) | 0x01 ;
1361 dev_dbg(&client
->dev
, "Setting CONFIG to: 0x%02x\n", value
);
1362 lm85_write_value(client
, LM85_REG_CONFIG
, value
);
1365 static struct lm85_data
*lm85_update_device(struct device
*dev
)
1367 struct i2c_client
*client
= to_i2c_client(dev
);
1368 struct lm85_data
*data
= i2c_get_clientdata(client
);
1371 down(&data
->update_lock
);
1373 if ( !data
->valid
||
1374 time_after(jiffies
, data
->last_reading
+ LM85_DATA_INTERVAL
) ) {
1375 /* Things that change quickly */
1376 dev_dbg(&client
->dev
, "Reading sensor values\n");
1378 /* Have to read extended bits first to "freeze" the
1379 * more significant bits that are read later.
1381 if ( (data
->type
== adm1027
) || (data
->type
== adt7463
) ) {
1382 int ext1
= lm85_read_value(client
,
1383 ADM1027_REG_EXTEND_ADC1
);
1384 int ext2
= lm85_read_value(client
,
1385 ADM1027_REG_EXTEND_ADC2
);
1386 int val
= (ext1
<< 8) + ext2
;
1388 for(i
= 0; i
<= 4; i
++)
1389 data
->in_ext
[i
] = (val
>>(i
* 2))&0x03;
1391 for(i
= 0; i
<= 2; i
++)
1392 data
->temp_ext
[i
] = (val
>>((i
+ 5) * 2))&0x03;
1395 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in
1396 the emc6d102 and 2 in the adt7463 and adm1027. In all
1397 other chips ext is always 0 and the value of scale is
1398 irrelevant. So it is left in 4*/
1399 data
->adc_scale
= (data
->type
== emc6d102
) ? 16 : 4;
1401 data
->vid
= lm85_read_value(client
, LM85_REG_VID
);
1403 for (i
= 0; i
<= 3; ++i
) {
1405 lm85_read_value(client
, LM85_REG_IN(i
));
1408 if (!(data
->type
== adt7463
&& (data
->vid
& 0x80))) {
1409 data
->in
[4] = lm85_read_value(client
,
1413 for (i
= 0; i
<= 3; ++i
) {
1415 lm85_read_value(client
, LM85_REG_FAN(i
));
1418 for (i
= 0; i
<= 2; ++i
) {
1420 lm85_read_value(client
, LM85_REG_TEMP(i
));
1423 for (i
= 0; i
<= 2; ++i
) {
1425 lm85_read_value(client
, LM85_REG_PWM(i
));
1428 data
->alarms
= lm85_read_value(client
, LM85_REG_ALARM1
);
1430 if ( data
->type
== adt7463
) {
1431 if( data
->therm_total
< ULONG_MAX
- 256 ) {
1432 data
->therm_total
+=
1433 lm85_read_value(client
, ADT7463_REG_THERM
);
1435 } else if ( data
->type
== emc6d100
) {
1436 /* Three more voltage sensors */
1437 for (i
= 5; i
<= 7; ++i
) {
1439 lm85_read_value(client
, EMC6D100_REG_IN(i
));
1441 /* More alarm bits */
1443 lm85_read_value(client
, EMC6D100_REG_ALARM3
) << 16;
1444 } else if (data
->type
== emc6d102
) {
1445 /* Have to read LSB bits after the MSB ones because
1446 the reading of the MSB bits has frozen the
1447 LSBs (backward from the ADM1027).
1449 int ext1
= lm85_read_value(client
,
1450 EMC6D102_REG_EXTEND_ADC1
);
1451 int ext2
= lm85_read_value(client
,
1452 EMC6D102_REG_EXTEND_ADC2
);
1453 int ext3
= lm85_read_value(client
,
1454 EMC6D102_REG_EXTEND_ADC3
);
1455 int ext4
= lm85_read_value(client
,
1456 EMC6D102_REG_EXTEND_ADC4
);
1457 data
->in_ext
[0] = ext3
& 0x0f;
1458 data
->in_ext
[1] = ext4
& 0x0f;
1459 data
->in_ext
[2] = (ext4
>> 4) & 0x0f;
1460 data
->in_ext
[3] = (ext3
>> 4) & 0x0f;
1461 data
->in_ext
[4] = (ext2
>> 4) & 0x0f;
1463 data
->temp_ext
[0] = ext1
& 0x0f;
1464 data
->temp_ext
[1] = ext2
& 0x0f;
1465 data
->temp_ext
[2] = (ext1
>> 4) & 0x0f;
1468 data
->last_reading
= jiffies
;
1469 }; /* last_reading */
1471 if ( !data
->valid
||
1472 time_after(jiffies
, data
->last_config
+ LM85_CONFIG_INTERVAL
) ) {
1473 /* Things that don't change often */
1474 dev_dbg(&client
->dev
, "Reading config values\n");
1476 for (i
= 0; i
<= 3; ++i
) {
1478 lm85_read_value(client
, LM85_REG_IN_MIN(i
));
1480 lm85_read_value(client
, LM85_REG_IN_MAX(i
));
1483 if (!(data
->type
== adt7463
&& (data
->vid
& 0x80))) {
1484 data
->in_min
[4] = lm85_read_value(client
,
1485 LM85_REG_IN_MIN(4));
1486 data
->in_max
[4] = lm85_read_value(client
,
1487 LM85_REG_IN_MAX(4));
1490 if ( data
->type
== emc6d100
) {
1491 for (i
= 5; i
<= 7; ++i
) {
1493 lm85_read_value(client
, EMC6D100_REG_IN_MIN(i
));
1495 lm85_read_value(client
, EMC6D100_REG_IN_MAX(i
));
1499 for (i
= 0; i
<= 3; ++i
) {
1501 lm85_read_value(client
, LM85_REG_FAN_MIN(i
));
1504 for (i
= 0; i
<= 2; ++i
) {
1506 lm85_read_value(client
, LM85_REG_TEMP_MIN(i
));
1508 lm85_read_value(client
, LM85_REG_TEMP_MAX(i
));
1511 for (i
= 0; i
<= 2; ++i
) {
1513 data
->autofan
[i
].config
=
1514 lm85_read_value(client
, LM85_REG_AFAN_CONFIG(i
));
1515 val
= lm85_read_value(client
, LM85_REG_AFAN_RANGE(i
));
1516 data
->autofan
[i
].freq
= val
& 0x07 ;
1517 data
->zone
[i
].range
= (val
>> 4) & 0x0f ;
1518 data
->autofan
[i
].min_pwm
=
1519 lm85_read_value(client
, LM85_REG_AFAN_MINPWM(i
));
1520 data
->zone
[i
].limit
=
1521 lm85_read_value(client
, LM85_REG_AFAN_LIMIT(i
));
1522 data
->zone
[i
].critical
=
1523 lm85_read_value(client
, LM85_REG_AFAN_CRITICAL(i
));
1526 i
= lm85_read_value(client
, LM85_REG_AFAN_SPIKE1
);
1527 data
->smooth
[0] = i
& 0x0f ;
1528 data
->syncpwm3
= i
& 0x10 ; /* Save PWM3 config */
1529 data
->autofan
[0].min_off
= (i
& 0x20) != 0 ;
1530 data
->autofan
[1].min_off
= (i
& 0x40) != 0 ;
1531 data
->autofan
[2].min_off
= (i
& 0x80) != 0 ;
1532 i
= lm85_read_value(client
, LM85_REG_AFAN_SPIKE2
);
1533 data
->smooth
[1] = (i
>>4) & 0x0f ;
1534 data
->smooth
[2] = i
& 0x0f ;
1536 i
= lm85_read_value(client
, LM85_REG_AFAN_HYST1
);
1537 data
->zone
[0].hyst
= (i
>>4) & 0x0f ;
1538 data
->zone
[1].hyst
= i
& 0x0f ;
1540 i
= lm85_read_value(client
, LM85_REG_AFAN_HYST2
);
1541 data
->zone
[2].hyst
= (i
>>4) & 0x0f ;
1543 if ( (data
->type
== lm85b
) || (data
->type
== lm85c
) ) {
1544 data
->tach_mode
= lm85_read_value(client
,
1545 LM85_REG_TACH_MODE
);
1546 data
->spinup_ctl
= lm85_read_value(client
,
1547 LM85_REG_SPINUP_CTL
);
1548 } else if ( (data
->type
== adt7463
) || (data
->type
== adm1027
) ) {
1549 if ( data
->type
== adt7463
) {
1550 for (i
= 0; i
<= 2; ++i
) {
1551 data
->oppoint
[i
] = lm85_read_value(client
,
1552 ADT7463_REG_OPPOINT(i
) );
1554 data
->tmin_ctl
= lm85_read_value(client
,
1555 ADT7463_REG_TMIN_CTL1
);
1556 data
->therm_limit
= lm85_read_value(client
,
1557 ADT7463_REG_THERM_LIMIT
);
1559 for (i
= 0; i
<= 2; ++i
) {
1560 data
->temp_offset
[i
] = lm85_read_value(client
,
1561 ADM1027_REG_TEMP_OFFSET(i
) );
1563 data
->tach_mode
= lm85_read_value(client
,
1564 ADM1027_REG_CONFIG3
);
1565 data
->fan_ppr
= lm85_read_value(client
,
1566 ADM1027_REG_FAN_PPR
);
1569 data
->last_config
= jiffies
;
1570 }; /* last_config */
1574 up(&data
->update_lock
);
1580 static int __init
sm_lm85_init(void)
1582 return i2c_add_driver(&lm85_driver
);
1585 static void __exit
sm_lm85_exit(void)
1587 i2c_del_driver(&lm85_driver
);
1590 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1591 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1592 * post 2.7.0 CVS changes.
1594 MODULE_LICENSE("GPL");
1595 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1596 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1598 module_init(sm_lm85_init
);
1599 module_exit(sm_lm85_exit
);