1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * lm85.c - Part of lm_sensors, Linux kernel modules for hardware
5 * Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
6 * Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
7 * Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
8 * Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
9 * Copyright (C) 2007--2014 Jean Delvare <jdelvare@suse.de>
11 * Chip details at <http://www.national.com/ds/LM/LM85.pdf>
14 #include <linux/module.h>
15 #include <linux/of_device.h>
16 #include <linux/init.h>
17 #include <linux/slab.h>
18 #include <linux/jiffies.h>
19 #include <linux/i2c.h>
20 #include <linux/hwmon.h>
21 #include <linux/hwmon-vid.h>
22 #include <linux/hwmon-sysfs.h>
23 #include <linux/err.h>
24 #include <linux/mutex.h>
25 #include <linux/util_macros.h>
27 /* Addresses to scan */
28 static const unsigned short normal_i2c
[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END
};
32 adm1027
, adt7463
, adt7468
,
33 emc6d100
, emc6d102
, emc6d103
, emc6d103s
36 /* The LM85 registers */
38 #define LM85_REG_IN(nr) (0x20 + (nr))
39 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
40 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
42 #define LM85_REG_TEMP(nr) (0x25 + (nr))
43 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
44 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
46 /* Fan speeds are LSB, MSB (2 bytes) */
47 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
48 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
50 #define LM85_REG_PWM(nr) (0x30 + (nr))
52 #define LM85_REG_COMPANY 0x3e
53 #define LM85_REG_VERSTEP 0x3f
55 #define ADT7468_REG_CFG5 0x7c
56 #define ADT7468_OFF64 (1 << 0)
57 #define ADT7468_HFPWM (1 << 1)
58 #define IS_ADT7468_OFF64(data) \
59 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
60 #define IS_ADT7468_HFPWM(data) \
61 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_HFPWM))
63 /* These are the recognized values for the above regs */
64 #define LM85_COMPANY_NATIONAL 0x01
65 #define LM85_COMPANY_ANALOG_DEV 0x41
66 #define LM85_COMPANY_SMSC 0x5c
67 #define LM85_VERSTEP_LM85C 0x60
68 #define LM85_VERSTEP_LM85B 0x62
69 #define LM85_VERSTEP_LM96000_1 0x68
70 #define LM85_VERSTEP_LM96000_2 0x69
71 #define LM85_VERSTEP_ADM1027 0x60
72 #define LM85_VERSTEP_ADT7463 0x62
73 #define LM85_VERSTEP_ADT7463C 0x6A
74 #define LM85_VERSTEP_ADT7468_1 0x71
75 #define LM85_VERSTEP_ADT7468_2 0x72
76 #define LM85_VERSTEP_EMC6D100_A0 0x60
77 #define LM85_VERSTEP_EMC6D100_A1 0x61
78 #define LM85_VERSTEP_EMC6D102 0x65
79 #define LM85_VERSTEP_EMC6D103_A0 0x68
80 #define LM85_VERSTEP_EMC6D103_A1 0x69
81 #define LM85_VERSTEP_EMC6D103S 0x6A /* Also known as EMC6D103:A2 */
83 #define LM85_REG_CONFIG 0x40
85 #define LM85_REG_ALARM1 0x41
86 #define LM85_REG_ALARM2 0x42
88 #define LM85_REG_VID 0x43
90 /* Automated FAN control */
91 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
92 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
93 #define LM85_REG_AFAN_SPIKE1 0x62
94 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
95 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
96 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
97 #define LM85_REG_AFAN_HYST1 0x6d
98 #define LM85_REG_AFAN_HYST2 0x6e
100 #define ADM1027_REG_EXTEND_ADC1 0x76
101 #define ADM1027_REG_EXTEND_ADC2 0x77
103 #define EMC6D100_REG_ALARM3 0x7d
104 /* IN5, IN6 and IN7 */
105 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
106 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
107 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
108 #define EMC6D102_REG_EXTEND_ADC1 0x85
109 #define EMC6D102_REG_EXTEND_ADC2 0x86
110 #define EMC6D102_REG_EXTEND_ADC3 0x87
111 #define EMC6D102_REG_EXTEND_ADC4 0x88
114 * Conversions. Rounding and limit checking is only done on the TO_REG
115 * variants. Note that you should be a bit careful with which arguments
116 * these macros are called: arguments may be evaluated more than once.
119 /* IN are scaled according to built-in resistors */
120 static const int lm85_scaling
[] = { /* .001 Volts */
121 2500, 2250, 3300, 5000, 12000,
122 3300, 1500, 1800 /*EMC6D100*/
124 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
126 #define INS_TO_REG(n, val) \
127 SCALE(clamp_val(val, 0, 255 * lm85_scaling[n] / 192), \
128 lm85_scaling[n], 192)
130 #define INSEXT_FROM_REG(n, val, ext) \
131 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
133 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
135 /* FAN speed is measured using 90kHz clock */
136 static inline u16
FAN_TO_REG(unsigned long val
)
140 return clamp_val(5400000 / val
, 1, 0xfffe);
142 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
145 /* Temperature is reported in .001 degC increments */
146 #define TEMP_TO_REG(val) \
147 DIV_ROUND_CLOSEST(clamp_val((val), -127000, 127000), 1000)
148 #define TEMPEXT_FROM_REG(val, ext) \
149 SCALE(((val) << 4) + (ext), 16, 1000)
150 #define TEMP_FROM_REG(val) ((val) * 1000)
152 #define PWM_TO_REG(val) clamp_val(val, 0, 255)
153 #define PWM_FROM_REG(val) (val)
156 * ZONEs have the following parameters:
157 * Limit (low) temp, 1. degC
158 * Hysteresis (below limit), 1. degC (0-15)
159 * Range of speed control, .1 degC (2-80)
160 * Critical (high) temp, 1. degC
162 * FAN PWMs have the following parameters:
163 * Reference Zone, 1, 2, 3, etc.
164 * Spinup time, .05 sec
165 * PWM value at limit/low temp, 1 count
166 * PWM Frequency, 1. Hz
167 * PWM is Min or OFF below limit, flag
168 * Invert PWM output, flag
170 * Some chips filter the temp, others the fan.
171 * Filter constant (or disabled) .1 seconds
174 /* These are the zone temperature range encodings in .001 degree C */
175 static const int lm85_range_map
[] = {
176 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
177 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
180 static int RANGE_TO_REG(long range
)
182 return find_closest(range
, lm85_range_map
, ARRAY_SIZE(lm85_range_map
));
184 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
186 /* These are the PWM frequency encodings */
187 static const int lm85_freq_map
[] = { /* 1 Hz */
188 10, 15, 23, 30, 38, 47, 61, 94
191 static const int lm96000_freq_map
[] = { /* 1 Hz */
192 10, 15, 23, 30, 38, 47, 61, 94,
193 22500, 24000, 25700, 25700, 27700, 27700, 30000, 30000
196 static const int adm1027_freq_map
[] = { /* 1 Hz */
197 11, 15, 22, 29, 35, 44, 59, 88
200 static int FREQ_TO_REG(const int *map
,
201 unsigned int map_size
, unsigned long freq
)
203 return find_closest(freq
, map
, map_size
);
206 static int FREQ_FROM_REG(const int *map
, unsigned int map_size
, u8 reg
)
208 return map
[reg
% map_size
];
212 * Since we can't use strings, I'm abusing these numbers
213 * to stand in for the following meanings:
214 * 1 -- PWM responds to Zone 1
215 * 2 -- PWM responds to Zone 2
216 * 3 -- PWM responds to Zone 3
217 * 23 -- PWM responds to the higher temp of Zone 2 or 3
218 * 123 -- PWM responds to highest of Zone 1, 2, or 3
219 * 0 -- PWM is always at 0% (ie, off)
220 * -1 -- PWM is always at 100%
221 * -2 -- PWM responds to manual control
224 static const int lm85_zone_map
[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
225 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
227 static int ZONE_TO_REG(int zone
)
231 for (i
= 0; i
<= 7; ++i
)
232 if (zone
== lm85_zone_map
[i
])
234 if (i
> 7) /* Not found. */
235 i
= 3; /* Always 100% */
239 #define HYST_TO_REG(val) clamp_val(((val) + 500) / 1000, 0, 15)
240 #define HYST_FROM_REG(val) ((val) * 1000)
243 * Chip sampling rates
245 * Some sensors are not updated more frequently than once per second
246 * so it doesn't make sense to read them more often than that.
247 * We cache the results and return the saved data if the driver
248 * is called again before a second has elapsed.
250 * Also, there is significant configuration data for this chip
251 * given the automatic PWM fan control that is possible. There
252 * are about 47 bytes of config data to only 22 bytes of actual
253 * readings. So, we keep the config data up to date in the cache
254 * when it is written and only sample it once every 1 *minute*
256 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
257 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
260 * LM85 can automatically adjust fan speeds based on temperature
261 * This structure encapsulates an entire Zone config. There are
262 * three zones (one for each temperature input) on the lm85
265 s8 limit
; /* Low temp limit */
266 u8 hyst
; /* Low limit hysteresis. (0-15) */
267 u8 range
; /* Temp range, encoded */
268 s8 critical
; /* "All fans ON" temp limit */
270 * Actual "max" temperature specified. Preserved
271 * to prevent "drift" as other autofan control
276 struct lm85_autofan
{
277 u8 config
; /* Register value */
278 u8 min_pwm
; /* Minimum PWM value, encoded */
279 u8 min_off
; /* Min PWM or OFF below "limit", flag */
283 * For each registered chip, we need to keep some data in memory.
284 * The structure is dynamically allocated.
287 struct i2c_client
*client
;
288 const struct attribute_group
*groups
[6];
290 unsigned int freq_map_size
;
294 bool has_vid5
; /* true if VID5 is configured for ADT7463 or ADT7468 */
296 struct mutex update_lock
;
297 int valid
; /* !=0 if following fields are valid */
298 unsigned long last_reading
; /* In jiffies */
299 unsigned long last_config
; /* In jiffies */
301 u8 in
[8]; /* Register value */
302 u8 in_max
[8]; /* Register value */
303 u8 in_min
[8]; /* Register value */
304 s8 temp
[3]; /* Register value */
305 s8 temp_min
[3]; /* Register value */
306 s8 temp_max
[3]; /* Register value */
307 u16 fan
[4]; /* Register value */
308 u16 fan_min
[4]; /* Register value */
309 u8 pwm
[3]; /* Register value */
310 u8 pwm_freq
[3]; /* Register encoding */
311 u8 temp_ext
[3]; /* Decoded values */
312 u8 in_ext
[8]; /* Decoded values */
313 u8 vid
; /* Register value */
314 u8 vrm
; /* VRM version */
315 u32 alarms
; /* Register encoding, combined */
316 u8 cfg5
; /* Config Register 5 on ADT7468 */
317 struct lm85_autofan autofan
[3];
318 struct lm85_zone zone
[3];
321 static int lm85_read_value(struct i2c_client
*client
, u8 reg
)
325 /* What size location is it? */
327 case LM85_REG_FAN(0): /* Read WORD data */
328 case LM85_REG_FAN(1):
329 case LM85_REG_FAN(2):
330 case LM85_REG_FAN(3):
331 case LM85_REG_FAN_MIN(0):
332 case LM85_REG_FAN_MIN(1):
333 case LM85_REG_FAN_MIN(2):
334 case LM85_REG_FAN_MIN(3):
335 case LM85_REG_ALARM1
: /* Read both bytes at once */
336 res
= i2c_smbus_read_byte_data(client
, reg
) & 0xff;
337 res
|= i2c_smbus_read_byte_data(client
, reg
+ 1) << 8;
339 default: /* Read BYTE data */
340 res
= i2c_smbus_read_byte_data(client
, reg
);
347 static void lm85_write_value(struct i2c_client
*client
, u8 reg
, int value
)
350 case LM85_REG_FAN(0): /* Write WORD data */
351 case LM85_REG_FAN(1):
352 case LM85_REG_FAN(2):
353 case LM85_REG_FAN(3):
354 case LM85_REG_FAN_MIN(0):
355 case LM85_REG_FAN_MIN(1):
356 case LM85_REG_FAN_MIN(2):
357 case LM85_REG_FAN_MIN(3):
358 /* NOTE: ALARM is read only, so not included here */
359 i2c_smbus_write_byte_data(client
, reg
, value
& 0xff);
360 i2c_smbus_write_byte_data(client
, reg
+ 1, value
>> 8);
362 default: /* Write BYTE data */
363 i2c_smbus_write_byte_data(client
, reg
, value
);
368 static struct lm85_data
*lm85_update_device(struct device
*dev
)
370 struct lm85_data
*data
= dev_get_drvdata(dev
);
371 struct i2c_client
*client
= data
->client
;
374 mutex_lock(&data
->update_lock
);
377 time_after(jiffies
, data
->last_reading
+ LM85_DATA_INTERVAL
)) {
378 /* Things that change quickly */
379 dev_dbg(&client
->dev
, "Reading sensor values\n");
382 * Have to read extended bits first to "freeze" the
383 * more significant bits that are read later.
384 * There are 2 additional resolution bits per channel and we
385 * have room for 4, so we shift them to the left.
387 if (data
->type
== adm1027
|| data
->type
== adt7463
||
388 data
->type
== adt7468
) {
389 int ext1
= lm85_read_value(client
,
390 ADM1027_REG_EXTEND_ADC1
);
391 int ext2
= lm85_read_value(client
,
392 ADM1027_REG_EXTEND_ADC2
);
393 int val
= (ext1
<< 8) + ext2
;
395 for (i
= 0; i
<= 4; i
++)
397 ((val
>> (i
* 2)) & 0x03) << 2;
399 for (i
= 0; i
<= 2; i
++)
401 (val
>> ((i
+ 4) * 2)) & 0x0c;
404 data
->vid
= lm85_read_value(client
, LM85_REG_VID
);
406 for (i
= 0; i
<= 3; ++i
) {
408 lm85_read_value(client
, LM85_REG_IN(i
));
410 lm85_read_value(client
, LM85_REG_FAN(i
));
414 data
->in
[4] = lm85_read_value(client
, LM85_REG_IN(4));
416 if (data
->type
== adt7468
)
417 data
->cfg5
= lm85_read_value(client
, ADT7468_REG_CFG5
);
419 for (i
= 0; i
<= 2; ++i
) {
421 lm85_read_value(client
, LM85_REG_TEMP(i
));
423 lm85_read_value(client
, LM85_REG_PWM(i
));
425 if (IS_ADT7468_OFF64(data
))
429 data
->alarms
= lm85_read_value(client
, LM85_REG_ALARM1
);
431 if (data
->type
== emc6d100
) {
432 /* Three more voltage sensors */
433 for (i
= 5; i
<= 7; ++i
) {
434 data
->in
[i
] = lm85_read_value(client
,
437 /* More alarm bits */
438 data
->alarms
|= lm85_read_value(client
,
439 EMC6D100_REG_ALARM3
) << 16;
440 } else if (data
->type
== emc6d102
|| data
->type
== emc6d103
||
441 data
->type
== emc6d103s
) {
443 * Have to read LSB bits after the MSB ones because
444 * the reading of the MSB bits has frozen the
445 * LSBs (backward from the ADM1027).
447 int ext1
= lm85_read_value(client
,
448 EMC6D102_REG_EXTEND_ADC1
);
449 int ext2
= lm85_read_value(client
,
450 EMC6D102_REG_EXTEND_ADC2
);
451 int ext3
= lm85_read_value(client
,
452 EMC6D102_REG_EXTEND_ADC3
);
453 int ext4
= lm85_read_value(client
,
454 EMC6D102_REG_EXTEND_ADC4
);
455 data
->in_ext
[0] = ext3
& 0x0f;
456 data
->in_ext
[1] = ext4
& 0x0f;
457 data
->in_ext
[2] = ext4
>> 4;
458 data
->in_ext
[3] = ext3
>> 4;
459 data
->in_ext
[4] = ext2
>> 4;
461 data
->temp_ext
[0] = ext1
& 0x0f;
462 data
->temp_ext
[1] = ext2
& 0x0f;
463 data
->temp_ext
[2] = ext1
>> 4;
466 data
->last_reading
= jiffies
;
470 time_after(jiffies
, data
->last_config
+ LM85_CONFIG_INTERVAL
)) {
471 /* Things that don't change often */
472 dev_dbg(&client
->dev
, "Reading config values\n");
474 for (i
= 0; i
<= 3; ++i
) {
476 lm85_read_value(client
, LM85_REG_IN_MIN(i
));
478 lm85_read_value(client
, LM85_REG_IN_MAX(i
));
480 lm85_read_value(client
, LM85_REG_FAN_MIN(i
));
483 if (!data
->has_vid5
) {
484 data
->in_min
[4] = lm85_read_value(client
,
486 data
->in_max
[4] = lm85_read_value(client
,
490 if (data
->type
== emc6d100
) {
491 for (i
= 5; i
<= 7; ++i
) {
492 data
->in_min
[i
] = lm85_read_value(client
,
493 EMC6D100_REG_IN_MIN(i
));
494 data
->in_max
[i
] = lm85_read_value(client
,
495 EMC6D100_REG_IN_MAX(i
));
499 for (i
= 0; i
<= 2; ++i
) {
503 lm85_read_value(client
, LM85_REG_TEMP_MIN(i
));
505 lm85_read_value(client
, LM85_REG_TEMP_MAX(i
));
507 data
->autofan
[i
].config
=
508 lm85_read_value(client
, LM85_REG_AFAN_CONFIG(i
));
509 val
= lm85_read_value(client
, LM85_REG_AFAN_RANGE(i
));
510 data
->pwm_freq
[i
] = val
% data
->freq_map_size
;
511 data
->zone
[i
].range
= val
>> 4;
512 data
->autofan
[i
].min_pwm
=
513 lm85_read_value(client
, LM85_REG_AFAN_MINPWM(i
));
514 data
->zone
[i
].limit
=
515 lm85_read_value(client
, LM85_REG_AFAN_LIMIT(i
));
516 data
->zone
[i
].critical
=
517 lm85_read_value(client
, LM85_REG_AFAN_CRITICAL(i
));
519 if (IS_ADT7468_OFF64(data
)) {
520 data
->temp_min
[i
] -= 64;
521 data
->temp_max
[i
] -= 64;
522 data
->zone
[i
].limit
-= 64;
523 data
->zone
[i
].critical
-= 64;
527 if (data
->type
!= emc6d103s
) {
528 i
= lm85_read_value(client
, LM85_REG_AFAN_SPIKE1
);
529 data
->autofan
[0].min_off
= (i
& 0x20) != 0;
530 data
->autofan
[1].min_off
= (i
& 0x40) != 0;
531 data
->autofan
[2].min_off
= (i
& 0x80) != 0;
533 i
= lm85_read_value(client
, LM85_REG_AFAN_HYST1
);
534 data
->zone
[0].hyst
= i
>> 4;
535 data
->zone
[1].hyst
= i
& 0x0f;
537 i
= lm85_read_value(client
, LM85_REG_AFAN_HYST2
);
538 data
->zone
[2].hyst
= i
>> 4;
541 data
->last_config
= jiffies
;
546 mutex_unlock(&data
->update_lock
);
552 static ssize_t
fan_show(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", FAN_FROM_REG(data
->fan
[nr
]));
560 static ssize_t
fan_min_show(struct device
*dev
, struct device_attribute
*attr
,
563 int nr
= to_sensor_dev_attr(attr
)->index
;
564 struct lm85_data
*data
= lm85_update_device(dev
);
565 return sprintf(buf
, "%d\n", FAN_FROM_REG(data
->fan_min
[nr
]));
568 static ssize_t
fan_min_store(struct device
*dev
,
569 struct device_attribute
*attr
, const char *buf
,
572 int nr
= to_sensor_dev_attr(attr
)->index
;
573 struct lm85_data
*data
= dev_get_drvdata(dev
);
574 struct i2c_client
*client
= data
->client
;
578 err
= kstrtoul(buf
, 10, &val
);
582 mutex_lock(&data
->update_lock
);
583 data
->fan_min
[nr
] = FAN_TO_REG(val
);
584 lm85_write_value(client
, LM85_REG_FAN_MIN(nr
), data
->fan_min
[nr
]);
585 mutex_unlock(&data
->update_lock
);
589 static SENSOR_DEVICE_ATTR_RO(fan1_input
, fan
, 0);
590 static SENSOR_DEVICE_ATTR_RW(fan1_min
, fan_min
, 0);
591 static SENSOR_DEVICE_ATTR_RO(fan2_input
, fan
, 1);
592 static SENSOR_DEVICE_ATTR_RW(fan2_min
, fan_min
, 1);
593 static SENSOR_DEVICE_ATTR_RO(fan3_input
, fan
, 2);
594 static SENSOR_DEVICE_ATTR_RW(fan3_min
, fan_min
, 2);
595 static SENSOR_DEVICE_ATTR_RO(fan4_input
, fan
, 3);
596 static SENSOR_DEVICE_ATTR_RW(fan4_min
, fan_min
, 3);
598 /* vid, vrm, alarms */
600 static ssize_t
cpu0_vid_show(struct device
*dev
,
601 struct device_attribute
*attr
, char *buf
)
603 struct lm85_data
*data
= lm85_update_device(dev
);
606 if (data
->has_vid5
) {
607 /* 6-pin VID (VRM 10) */
608 vid
= vid_from_reg(data
->vid
& 0x3f, data
->vrm
);
610 /* 5-pin VID (VRM 9) */
611 vid
= vid_from_reg(data
->vid
& 0x1f, data
->vrm
);
614 return sprintf(buf
, "%d\n", vid
);
617 static DEVICE_ATTR_RO(cpu0_vid
);
619 static ssize_t
vrm_show(struct device
*dev
, struct device_attribute
*attr
,
622 struct lm85_data
*data
= dev_get_drvdata(dev
);
623 return sprintf(buf
, "%ld\n", (long) data
->vrm
);
626 static ssize_t
vrm_store(struct device
*dev
, struct device_attribute
*attr
,
627 const char *buf
, size_t count
)
629 struct lm85_data
*data
= dev_get_drvdata(dev
);
633 err
= kstrtoul(buf
, 10, &val
);
644 static DEVICE_ATTR_RW(vrm
);
646 static ssize_t
alarms_show(struct device
*dev
, struct device_attribute
*attr
,
649 struct lm85_data
*data
= lm85_update_device(dev
);
650 return sprintf(buf
, "%u\n", data
->alarms
);
653 static DEVICE_ATTR_RO(alarms
);
655 static ssize_t
alarm_show(struct device
*dev
, struct device_attribute
*attr
,
658 int nr
= to_sensor_dev_attr(attr
)->index
;
659 struct lm85_data
*data
= lm85_update_device(dev
);
660 return sprintf(buf
, "%u\n", (data
->alarms
>> nr
) & 1);
663 static SENSOR_DEVICE_ATTR_RO(in0_alarm
, alarm
, 0);
664 static SENSOR_DEVICE_ATTR_RO(in1_alarm
, alarm
, 1);
665 static SENSOR_DEVICE_ATTR_RO(in2_alarm
, alarm
, 2);
666 static SENSOR_DEVICE_ATTR_RO(in3_alarm
, alarm
, 3);
667 static SENSOR_DEVICE_ATTR_RO(in4_alarm
, alarm
, 8);
668 static SENSOR_DEVICE_ATTR_RO(in5_alarm
, alarm
, 18);
669 static SENSOR_DEVICE_ATTR_RO(in6_alarm
, alarm
, 16);
670 static SENSOR_DEVICE_ATTR_RO(in7_alarm
, alarm
, 17);
671 static SENSOR_DEVICE_ATTR_RO(temp1_alarm
, alarm
, 4);
672 static SENSOR_DEVICE_ATTR_RO(temp1_fault
, alarm
, 14);
673 static SENSOR_DEVICE_ATTR_RO(temp2_alarm
, alarm
, 5);
674 static SENSOR_DEVICE_ATTR_RO(temp3_alarm
, alarm
, 6);
675 static SENSOR_DEVICE_ATTR_RO(temp3_fault
, alarm
, 15);
676 static SENSOR_DEVICE_ATTR_RO(fan1_alarm
, alarm
, 10);
677 static SENSOR_DEVICE_ATTR_RO(fan2_alarm
, alarm
, 11);
678 static SENSOR_DEVICE_ATTR_RO(fan3_alarm
, alarm
, 12);
679 static SENSOR_DEVICE_ATTR_RO(fan4_alarm
, alarm
, 13);
683 static ssize_t
pwm_show(struct device
*dev
, struct device_attribute
*attr
,
686 int nr
= to_sensor_dev_attr(attr
)->index
;
687 struct lm85_data
*data
= lm85_update_device(dev
);
688 return sprintf(buf
, "%d\n", PWM_FROM_REG(data
->pwm
[nr
]));
691 static ssize_t
pwm_store(struct device
*dev
, struct device_attribute
*attr
,
692 const char *buf
, size_t count
)
694 int nr
= to_sensor_dev_attr(attr
)->index
;
695 struct lm85_data
*data
= dev_get_drvdata(dev
);
696 struct i2c_client
*client
= data
->client
;
700 err
= kstrtoul(buf
, 10, &val
);
704 mutex_lock(&data
->update_lock
);
705 data
->pwm
[nr
] = PWM_TO_REG(val
);
706 lm85_write_value(client
, LM85_REG_PWM(nr
), data
->pwm
[nr
]);
707 mutex_unlock(&data
->update_lock
);
711 static ssize_t
pwm_enable_show(struct device
*dev
,
712 struct device_attribute
*attr
, char *buf
)
714 int nr
= to_sensor_dev_attr(attr
)->index
;
715 struct lm85_data
*data
= lm85_update_device(dev
);
716 int pwm_zone
, enable
;
718 pwm_zone
= ZONE_FROM_REG(data
->autofan
[nr
].config
);
720 case -1: /* PWM is always at 100% */
723 case 0: /* PWM is always at 0% */
724 case -2: /* PWM responds to manual control */
727 default: /* PWM in automatic mode */
730 return sprintf(buf
, "%d\n", enable
);
733 static ssize_t
pwm_enable_store(struct device
*dev
,
734 struct device_attribute
*attr
,
735 const char *buf
, size_t count
)
737 int nr
= to_sensor_dev_attr(attr
)->index
;
738 struct lm85_data
*data
= dev_get_drvdata(dev
);
739 struct i2c_client
*client
= data
->client
;
744 err
= kstrtoul(buf
, 10, &val
);
757 * Here we have to choose arbitrarily one of the 5 possible
758 * configurations; I go for the safest
766 mutex_lock(&data
->update_lock
);
767 data
->autofan
[nr
].config
= lm85_read_value(client
,
768 LM85_REG_AFAN_CONFIG(nr
));
769 data
->autofan
[nr
].config
= (data
->autofan
[nr
].config
& ~0xe0)
771 lm85_write_value(client
, LM85_REG_AFAN_CONFIG(nr
),
772 data
->autofan
[nr
].config
);
773 mutex_unlock(&data
->update_lock
);
777 static ssize_t
pwm_freq_show(struct device
*dev
,
778 struct device_attribute
*attr
, char *buf
)
780 int nr
= to_sensor_dev_attr(attr
)->index
;
781 struct lm85_data
*data
= lm85_update_device(dev
);
784 if (IS_ADT7468_HFPWM(data
))
787 freq
= FREQ_FROM_REG(data
->freq_map
, data
->freq_map_size
,
790 return sprintf(buf
, "%d\n", freq
);
793 static ssize_t
pwm_freq_store(struct device
*dev
,
794 struct device_attribute
*attr
, const char *buf
,
797 int nr
= to_sensor_dev_attr(attr
)->index
;
798 struct lm85_data
*data
= dev_get_drvdata(dev
);
799 struct i2c_client
*client
= data
->client
;
803 err
= kstrtoul(buf
, 10, &val
);
807 mutex_lock(&data
->update_lock
);
809 * The ADT7468 has a special high-frequency PWM output mode,
810 * where all PWM outputs are driven by a 22.5 kHz clock.
811 * This might confuse the user, but there's not much we can do.
813 if (data
->type
== adt7468
&& val
>= 11300) { /* High freq. mode */
814 data
->cfg5
&= ~ADT7468_HFPWM
;
815 lm85_write_value(client
, ADT7468_REG_CFG5
, data
->cfg5
);
816 } else { /* Low freq. mode */
817 data
->pwm_freq
[nr
] = FREQ_TO_REG(data
->freq_map
,
818 data
->freq_map_size
, val
);
819 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
820 (data
->zone
[nr
].range
<< 4)
821 | data
->pwm_freq
[nr
]);
822 if (data
->type
== adt7468
) {
823 data
->cfg5
|= ADT7468_HFPWM
;
824 lm85_write_value(client
, ADT7468_REG_CFG5
, data
->cfg5
);
827 mutex_unlock(&data
->update_lock
);
831 static SENSOR_DEVICE_ATTR_RW(pwm1
, pwm
, 0);
832 static SENSOR_DEVICE_ATTR_RW(pwm1_enable
, pwm_enable
, 0);
833 static SENSOR_DEVICE_ATTR_RW(pwm1_freq
, pwm_freq
, 0);
834 static SENSOR_DEVICE_ATTR_RW(pwm2
, pwm
, 1);
835 static SENSOR_DEVICE_ATTR_RW(pwm2_enable
, pwm_enable
, 1);
836 static SENSOR_DEVICE_ATTR_RW(pwm2_freq
, pwm_freq
, 1);
837 static SENSOR_DEVICE_ATTR_RW(pwm3
, pwm
, 2);
838 static SENSOR_DEVICE_ATTR_RW(pwm3_enable
, pwm_enable
, 2);
839 static SENSOR_DEVICE_ATTR_RW(pwm3_freq
, pwm_freq
, 2);
843 static ssize_t
in_show(struct device
*dev
, struct device_attribute
*attr
,
846 int nr
= to_sensor_dev_attr(attr
)->index
;
847 struct lm85_data
*data
= lm85_update_device(dev
);
848 return sprintf(buf
, "%d\n", INSEXT_FROM_REG(nr
, data
->in
[nr
],
852 static ssize_t
in_min_show(struct device
*dev
, struct device_attribute
*attr
,
855 int nr
= to_sensor_dev_attr(attr
)->index
;
856 struct lm85_data
*data
= lm85_update_device(dev
);
857 return sprintf(buf
, "%d\n", INS_FROM_REG(nr
, data
->in_min
[nr
]));
860 static ssize_t
in_min_store(struct device
*dev
, struct device_attribute
*attr
,
861 const char *buf
, size_t count
)
863 int nr
= to_sensor_dev_attr(attr
)->index
;
864 struct lm85_data
*data
= dev_get_drvdata(dev
);
865 struct i2c_client
*client
= data
->client
;
869 err
= kstrtol(buf
, 10, &val
);
873 mutex_lock(&data
->update_lock
);
874 data
->in_min
[nr
] = INS_TO_REG(nr
, val
);
875 lm85_write_value(client
, LM85_REG_IN_MIN(nr
), data
->in_min
[nr
]);
876 mutex_unlock(&data
->update_lock
);
880 static ssize_t
in_max_show(struct device
*dev
, struct device_attribute
*attr
,
883 int nr
= to_sensor_dev_attr(attr
)->index
;
884 struct lm85_data
*data
= lm85_update_device(dev
);
885 return sprintf(buf
, "%d\n", INS_FROM_REG(nr
, data
->in_max
[nr
]));
888 static ssize_t
in_max_store(struct device
*dev
, struct device_attribute
*attr
,
889 const char *buf
, size_t count
)
891 int nr
= to_sensor_dev_attr(attr
)->index
;
892 struct lm85_data
*data
= dev_get_drvdata(dev
);
893 struct i2c_client
*client
= data
->client
;
897 err
= kstrtol(buf
, 10, &val
);
901 mutex_lock(&data
->update_lock
);
902 data
->in_max
[nr
] = INS_TO_REG(nr
, val
);
903 lm85_write_value(client
, LM85_REG_IN_MAX(nr
), data
->in_max
[nr
]);
904 mutex_unlock(&data
->update_lock
);
908 static SENSOR_DEVICE_ATTR_RO(in0_input
, in
, 0);
909 static SENSOR_DEVICE_ATTR_RW(in0_min
, in_min
, 0);
910 static SENSOR_DEVICE_ATTR_RW(in0_max
, in_max
, 0);
911 static SENSOR_DEVICE_ATTR_RO(in1_input
, in
, 1);
912 static SENSOR_DEVICE_ATTR_RW(in1_min
, in_min
, 1);
913 static SENSOR_DEVICE_ATTR_RW(in1_max
, in_max
, 1);
914 static SENSOR_DEVICE_ATTR_RO(in2_input
, in
, 2);
915 static SENSOR_DEVICE_ATTR_RW(in2_min
, in_min
, 2);
916 static SENSOR_DEVICE_ATTR_RW(in2_max
, in_max
, 2);
917 static SENSOR_DEVICE_ATTR_RO(in3_input
, in
, 3);
918 static SENSOR_DEVICE_ATTR_RW(in3_min
, in_min
, 3);
919 static SENSOR_DEVICE_ATTR_RW(in3_max
, in_max
, 3);
920 static SENSOR_DEVICE_ATTR_RO(in4_input
, in
, 4);
921 static SENSOR_DEVICE_ATTR_RW(in4_min
, in_min
, 4);
922 static SENSOR_DEVICE_ATTR_RW(in4_max
, in_max
, 4);
923 static SENSOR_DEVICE_ATTR_RO(in5_input
, in
, 5);
924 static SENSOR_DEVICE_ATTR_RW(in5_min
, in_min
, 5);
925 static SENSOR_DEVICE_ATTR_RW(in5_max
, in_max
, 5);
926 static SENSOR_DEVICE_ATTR_RO(in6_input
, in
, 6);
927 static SENSOR_DEVICE_ATTR_RW(in6_min
, in_min
, 6);
928 static SENSOR_DEVICE_ATTR_RW(in6_max
, in_max
, 6);
929 static SENSOR_DEVICE_ATTR_RO(in7_input
, in
, 7);
930 static SENSOR_DEVICE_ATTR_RW(in7_min
, in_min
, 7);
931 static SENSOR_DEVICE_ATTR_RW(in7_max
, in_max
, 7);
935 static ssize_t
temp_show(struct device
*dev
, struct device_attribute
*attr
,
938 int nr
= to_sensor_dev_attr(attr
)->index
;
939 struct lm85_data
*data
= lm85_update_device(dev
);
940 return sprintf(buf
, "%d\n", TEMPEXT_FROM_REG(data
->temp
[nr
],
941 data
->temp_ext
[nr
]));
944 static ssize_t
temp_min_show(struct device
*dev
,
945 struct device_attribute
*attr
, char *buf
)
947 int nr
= to_sensor_dev_attr(attr
)->index
;
948 struct lm85_data
*data
= lm85_update_device(dev
);
949 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_min
[nr
]));
952 static ssize_t
temp_min_store(struct device
*dev
,
953 struct device_attribute
*attr
, const char *buf
,
956 int nr
= to_sensor_dev_attr(attr
)->index
;
957 struct lm85_data
*data
= dev_get_drvdata(dev
);
958 struct i2c_client
*client
= data
->client
;
962 err
= kstrtol(buf
, 10, &val
);
966 if (IS_ADT7468_OFF64(data
))
969 mutex_lock(&data
->update_lock
);
970 data
->temp_min
[nr
] = TEMP_TO_REG(val
);
971 lm85_write_value(client
, LM85_REG_TEMP_MIN(nr
), data
->temp_min
[nr
]);
972 mutex_unlock(&data
->update_lock
);
976 static ssize_t
temp_max_show(struct device
*dev
,
977 struct device_attribute
*attr
, char *buf
)
979 int nr
= to_sensor_dev_attr(attr
)->index
;
980 struct lm85_data
*data
= lm85_update_device(dev
);
981 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_max
[nr
]));
984 static ssize_t
temp_max_store(struct device
*dev
,
985 struct device_attribute
*attr
, const char *buf
,
988 int nr
= to_sensor_dev_attr(attr
)->index
;
989 struct lm85_data
*data
= dev_get_drvdata(dev
);
990 struct i2c_client
*client
= data
->client
;
994 err
= kstrtol(buf
, 10, &val
);
998 if (IS_ADT7468_OFF64(data
))
1001 mutex_lock(&data
->update_lock
);
1002 data
->temp_max
[nr
] = TEMP_TO_REG(val
);
1003 lm85_write_value(client
, LM85_REG_TEMP_MAX(nr
), data
->temp_max
[nr
]);
1004 mutex_unlock(&data
->update_lock
);
1008 static SENSOR_DEVICE_ATTR_RO(temp1_input
, temp
, 0);
1009 static SENSOR_DEVICE_ATTR_RW(temp1_min
, temp_min
, 0);
1010 static SENSOR_DEVICE_ATTR_RW(temp1_max
, temp_max
, 0);
1011 static SENSOR_DEVICE_ATTR_RO(temp2_input
, temp
, 1);
1012 static SENSOR_DEVICE_ATTR_RW(temp2_min
, temp_min
, 1);
1013 static SENSOR_DEVICE_ATTR_RW(temp2_max
, temp_max
, 1);
1014 static SENSOR_DEVICE_ATTR_RO(temp3_input
, temp
, 2);
1015 static SENSOR_DEVICE_ATTR_RW(temp3_min
, temp_min
, 2);
1016 static SENSOR_DEVICE_ATTR_RW(temp3_max
, temp_max
, 2);
1018 /* Automatic PWM control */
1020 static ssize_t
pwm_auto_channels_show(struct device
*dev
,
1021 struct device_attribute
*attr
,
1024 int nr
= to_sensor_dev_attr(attr
)->index
;
1025 struct lm85_data
*data
= lm85_update_device(dev
);
1026 return sprintf(buf
, "%d\n", ZONE_FROM_REG(data
->autofan
[nr
].config
));
1029 static ssize_t
pwm_auto_channels_store(struct device
*dev
,
1030 struct device_attribute
*attr
,
1031 const char *buf
, size_t count
)
1033 int nr
= to_sensor_dev_attr(attr
)->index
;
1034 struct lm85_data
*data
= dev_get_drvdata(dev
);
1035 struct i2c_client
*client
= data
->client
;
1039 err
= kstrtol(buf
, 10, &val
);
1043 mutex_lock(&data
->update_lock
);
1044 data
->autofan
[nr
].config
= (data
->autofan
[nr
].config
& (~0xe0))
1046 lm85_write_value(client
, LM85_REG_AFAN_CONFIG(nr
),
1047 data
->autofan
[nr
].config
);
1048 mutex_unlock(&data
->update_lock
);
1052 static ssize_t
pwm_auto_pwm_min_show(struct device
*dev
,
1053 struct device_attribute
*attr
, char *buf
)
1055 int nr
= to_sensor_dev_attr(attr
)->index
;
1056 struct lm85_data
*data
= lm85_update_device(dev
);
1057 return sprintf(buf
, "%d\n", PWM_FROM_REG(data
->autofan
[nr
].min_pwm
));
1060 static ssize_t
pwm_auto_pwm_min_store(struct device
*dev
,
1061 struct device_attribute
*attr
,
1062 const char *buf
, size_t count
)
1064 int nr
= to_sensor_dev_attr(attr
)->index
;
1065 struct lm85_data
*data
= dev_get_drvdata(dev
);
1066 struct i2c_client
*client
= data
->client
;
1070 err
= kstrtoul(buf
, 10, &val
);
1074 mutex_lock(&data
->update_lock
);
1075 data
->autofan
[nr
].min_pwm
= PWM_TO_REG(val
);
1076 lm85_write_value(client
, LM85_REG_AFAN_MINPWM(nr
),
1077 data
->autofan
[nr
].min_pwm
);
1078 mutex_unlock(&data
->update_lock
);
1082 static ssize_t
pwm_auto_pwm_minctl_show(struct device
*dev
,
1083 struct device_attribute
*attr
,
1086 int nr
= to_sensor_dev_attr(attr
)->index
;
1087 struct lm85_data
*data
= lm85_update_device(dev
);
1088 return sprintf(buf
, "%d\n", data
->autofan
[nr
].min_off
);
1091 static ssize_t
pwm_auto_pwm_minctl_store(struct device
*dev
,
1092 struct device_attribute
*attr
,
1093 const char *buf
, size_t count
)
1095 int nr
= to_sensor_dev_attr(attr
)->index
;
1096 struct lm85_data
*data
= dev_get_drvdata(dev
);
1097 struct i2c_client
*client
= data
->client
;
1102 err
= kstrtol(buf
, 10, &val
);
1106 mutex_lock(&data
->update_lock
);
1107 data
->autofan
[nr
].min_off
= val
;
1108 tmp
= lm85_read_value(client
, LM85_REG_AFAN_SPIKE1
);
1109 tmp
&= ~(0x20 << nr
);
1110 if (data
->autofan
[nr
].min_off
)
1112 lm85_write_value(client
, LM85_REG_AFAN_SPIKE1
, tmp
);
1113 mutex_unlock(&data
->update_lock
);
1117 static SENSOR_DEVICE_ATTR_RW(pwm1_auto_channels
, pwm_auto_channels
, 0);
1118 static SENSOR_DEVICE_ATTR_RW(pwm1_auto_pwm_min
, pwm_auto_pwm_min
, 0);
1119 static SENSOR_DEVICE_ATTR_RW(pwm1_auto_pwm_minctl
, pwm_auto_pwm_minctl
, 0);
1120 static SENSOR_DEVICE_ATTR_RW(pwm2_auto_channels
, pwm_auto_channels
, 1);
1121 static SENSOR_DEVICE_ATTR_RW(pwm2_auto_pwm_min
, pwm_auto_pwm_min
, 1);
1122 static SENSOR_DEVICE_ATTR_RW(pwm2_auto_pwm_minctl
, pwm_auto_pwm_minctl
, 1);
1123 static SENSOR_DEVICE_ATTR_RW(pwm3_auto_channels
, pwm_auto_channels
, 2);
1124 static SENSOR_DEVICE_ATTR_RW(pwm3_auto_pwm_min
, pwm_auto_pwm_min
, 2);
1125 static SENSOR_DEVICE_ATTR_RW(pwm3_auto_pwm_minctl
, pwm_auto_pwm_minctl
, 2);
1127 /* Temperature settings for automatic PWM control */
1129 static ssize_t
temp_auto_temp_off_show(struct device
*dev
,
1130 struct device_attribute
*attr
,
1133 int nr
= to_sensor_dev_attr(attr
)->index
;
1134 struct lm85_data
*data
= lm85_update_device(dev
);
1135 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
) -
1136 HYST_FROM_REG(data
->zone
[nr
].hyst
));
1139 static ssize_t
temp_auto_temp_off_store(struct device
*dev
,
1140 struct device_attribute
*attr
,
1141 const char *buf
, size_t count
)
1143 int nr
= to_sensor_dev_attr(attr
)->index
;
1144 struct lm85_data
*data
= dev_get_drvdata(dev
);
1145 struct i2c_client
*client
= data
->client
;
1150 err
= kstrtol(buf
, 10, &val
);
1154 mutex_lock(&data
->update_lock
);
1155 min
= TEMP_FROM_REG(data
->zone
[nr
].limit
);
1156 data
->zone
[nr
].hyst
= HYST_TO_REG(min
- val
);
1157 if (nr
== 0 || nr
== 1) {
1158 lm85_write_value(client
, LM85_REG_AFAN_HYST1
,
1159 (data
->zone
[0].hyst
<< 4)
1160 | data
->zone
[1].hyst
);
1162 lm85_write_value(client
, LM85_REG_AFAN_HYST2
,
1163 (data
->zone
[2].hyst
<< 4));
1165 mutex_unlock(&data
->update_lock
);
1169 static ssize_t
temp_auto_temp_min_show(struct device
*dev
,
1170 struct device_attribute
*attr
,
1173 int nr
= to_sensor_dev_attr(attr
)->index
;
1174 struct lm85_data
*data
= lm85_update_device(dev
);
1175 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
));
1178 static ssize_t
temp_auto_temp_min_store(struct device
*dev
,
1179 struct device_attribute
*attr
,
1180 const char *buf
, size_t count
)
1182 int nr
= to_sensor_dev_attr(attr
)->index
;
1183 struct lm85_data
*data
= dev_get_drvdata(dev
);
1184 struct i2c_client
*client
= data
->client
;
1188 err
= kstrtol(buf
, 10, &val
);
1192 mutex_lock(&data
->update_lock
);
1193 data
->zone
[nr
].limit
= TEMP_TO_REG(val
);
1194 lm85_write_value(client
, LM85_REG_AFAN_LIMIT(nr
),
1195 data
->zone
[nr
].limit
);
1197 /* Update temp_auto_max and temp_auto_range */
1198 data
->zone
[nr
].range
= RANGE_TO_REG(
1199 TEMP_FROM_REG(data
->zone
[nr
].max_desired
) -
1200 TEMP_FROM_REG(data
->zone
[nr
].limit
));
1201 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
1202 ((data
->zone
[nr
].range
& 0x0f) << 4)
1203 | data
->pwm_freq
[nr
]);
1205 mutex_unlock(&data
->update_lock
);
1209 static ssize_t
temp_auto_temp_max_show(struct device
*dev
,
1210 struct device_attribute
*attr
,
1213 int nr
= to_sensor_dev_attr(attr
)->index
;
1214 struct lm85_data
*data
= lm85_update_device(dev
);
1215 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].limit
) +
1216 RANGE_FROM_REG(data
->zone
[nr
].range
));
1219 static ssize_t
temp_auto_temp_max_store(struct device
*dev
,
1220 struct device_attribute
*attr
,
1221 const char *buf
, size_t count
)
1223 int nr
= to_sensor_dev_attr(attr
)->index
;
1224 struct lm85_data
*data
= dev_get_drvdata(dev
);
1225 struct i2c_client
*client
= data
->client
;
1230 err
= kstrtol(buf
, 10, &val
);
1234 mutex_lock(&data
->update_lock
);
1235 min
= TEMP_FROM_REG(data
->zone
[nr
].limit
);
1236 data
->zone
[nr
].max_desired
= TEMP_TO_REG(val
);
1237 data
->zone
[nr
].range
= RANGE_TO_REG(
1239 lm85_write_value(client
, LM85_REG_AFAN_RANGE(nr
),
1240 ((data
->zone
[nr
].range
& 0x0f) << 4)
1241 | data
->pwm_freq
[nr
]);
1242 mutex_unlock(&data
->update_lock
);
1246 static ssize_t
temp_auto_temp_crit_show(struct device
*dev
,
1247 struct device_attribute
*attr
,
1250 int nr
= to_sensor_dev_attr(attr
)->index
;
1251 struct lm85_data
*data
= lm85_update_device(dev
);
1252 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->zone
[nr
].critical
));
1255 static ssize_t
temp_auto_temp_crit_store(struct device
*dev
,
1256 struct device_attribute
*attr
,
1257 const char *buf
, size_t count
)
1259 int nr
= to_sensor_dev_attr(attr
)->index
;
1260 struct lm85_data
*data
= dev_get_drvdata(dev
);
1261 struct i2c_client
*client
= data
->client
;
1265 err
= kstrtol(buf
, 10, &val
);
1269 mutex_lock(&data
->update_lock
);
1270 data
->zone
[nr
].critical
= TEMP_TO_REG(val
);
1271 lm85_write_value(client
, LM85_REG_AFAN_CRITICAL(nr
),
1272 data
->zone
[nr
].critical
);
1273 mutex_unlock(&data
->update_lock
);
1277 static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_off
, temp_auto_temp_off
, 0);
1278 static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_min
, temp_auto_temp_min
, 0);
1279 static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_max
, temp_auto_temp_max
, 0);
1280 static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_crit
, temp_auto_temp_crit
, 0);
1281 static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_off
, temp_auto_temp_off
, 1);
1282 static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_min
, temp_auto_temp_min
, 1);
1283 static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_max
, temp_auto_temp_max
, 1);
1284 static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_crit
, temp_auto_temp_crit
, 1);
1285 static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_off
, temp_auto_temp_off
, 2);
1286 static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_min
, temp_auto_temp_min
, 2);
1287 static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_max
, temp_auto_temp_max
, 2);
1288 static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_crit
, temp_auto_temp_crit
, 2);
1290 static struct attribute
*lm85_attributes
[] = {
1291 &sensor_dev_attr_fan1_input
.dev_attr
.attr
,
1292 &sensor_dev_attr_fan2_input
.dev_attr
.attr
,
1293 &sensor_dev_attr_fan3_input
.dev_attr
.attr
,
1294 &sensor_dev_attr_fan4_input
.dev_attr
.attr
,
1295 &sensor_dev_attr_fan1_min
.dev_attr
.attr
,
1296 &sensor_dev_attr_fan2_min
.dev_attr
.attr
,
1297 &sensor_dev_attr_fan3_min
.dev_attr
.attr
,
1298 &sensor_dev_attr_fan4_min
.dev_attr
.attr
,
1299 &sensor_dev_attr_fan1_alarm
.dev_attr
.attr
,
1300 &sensor_dev_attr_fan2_alarm
.dev_attr
.attr
,
1301 &sensor_dev_attr_fan3_alarm
.dev_attr
.attr
,
1302 &sensor_dev_attr_fan4_alarm
.dev_attr
.attr
,
1304 &sensor_dev_attr_pwm1
.dev_attr
.attr
,
1305 &sensor_dev_attr_pwm2
.dev_attr
.attr
,
1306 &sensor_dev_attr_pwm3
.dev_attr
.attr
,
1307 &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
,
1308 &sensor_dev_attr_pwm2_enable
.dev_attr
.attr
,
1309 &sensor_dev_attr_pwm3_enable
.dev_attr
.attr
,
1310 &sensor_dev_attr_pwm1_freq
.dev_attr
.attr
,
1311 &sensor_dev_attr_pwm2_freq
.dev_attr
.attr
,
1312 &sensor_dev_attr_pwm3_freq
.dev_attr
.attr
,
1314 &sensor_dev_attr_in0_input
.dev_attr
.attr
,
1315 &sensor_dev_attr_in1_input
.dev_attr
.attr
,
1316 &sensor_dev_attr_in2_input
.dev_attr
.attr
,
1317 &sensor_dev_attr_in3_input
.dev_attr
.attr
,
1318 &sensor_dev_attr_in0_min
.dev_attr
.attr
,
1319 &sensor_dev_attr_in1_min
.dev_attr
.attr
,
1320 &sensor_dev_attr_in2_min
.dev_attr
.attr
,
1321 &sensor_dev_attr_in3_min
.dev_attr
.attr
,
1322 &sensor_dev_attr_in0_max
.dev_attr
.attr
,
1323 &sensor_dev_attr_in1_max
.dev_attr
.attr
,
1324 &sensor_dev_attr_in2_max
.dev_attr
.attr
,
1325 &sensor_dev_attr_in3_max
.dev_attr
.attr
,
1326 &sensor_dev_attr_in0_alarm
.dev_attr
.attr
,
1327 &sensor_dev_attr_in1_alarm
.dev_attr
.attr
,
1328 &sensor_dev_attr_in2_alarm
.dev_attr
.attr
,
1329 &sensor_dev_attr_in3_alarm
.dev_attr
.attr
,
1331 &sensor_dev_attr_temp1_input
.dev_attr
.attr
,
1332 &sensor_dev_attr_temp2_input
.dev_attr
.attr
,
1333 &sensor_dev_attr_temp3_input
.dev_attr
.attr
,
1334 &sensor_dev_attr_temp1_min
.dev_attr
.attr
,
1335 &sensor_dev_attr_temp2_min
.dev_attr
.attr
,
1336 &sensor_dev_attr_temp3_min
.dev_attr
.attr
,
1337 &sensor_dev_attr_temp1_max
.dev_attr
.attr
,
1338 &sensor_dev_attr_temp2_max
.dev_attr
.attr
,
1339 &sensor_dev_attr_temp3_max
.dev_attr
.attr
,
1340 &sensor_dev_attr_temp1_alarm
.dev_attr
.attr
,
1341 &sensor_dev_attr_temp2_alarm
.dev_attr
.attr
,
1342 &sensor_dev_attr_temp3_alarm
.dev_attr
.attr
,
1343 &sensor_dev_attr_temp1_fault
.dev_attr
.attr
,
1344 &sensor_dev_attr_temp3_fault
.dev_attr
.attr
,
1346 &sensor_dev_attr_pwm1_auto_channels
.dev_attr
.attr
,
1347 &sensor_dev_attr_pwm2_auto_channels
.dev_attr
.attr
,
1348 &sensor_dev_attr_pwm3_auto_channels
.dev_attr
.attr
,
1349 &sensor_dev_attr_pwm1_auto_pwm_min
.dev_attr
.attr
,
1350 &sensor_dev_attr_pwm2_auto_pwm_min
.dev_attr
.attr
,
1351 &sensor_dev_attr_pwm3_auto_pwm_min
.dev_attr
.attr
,
1353 &sensor_dev_attr_temp1_auto_temp_min
.dev_attr
.attr
,
1354 &sensor_dev_attr_temp2_auto_temp_min
.dev_attr
.attr
,
1355 &sensor_dev_attr_temp3_auto_temp_min
.dev_attr
.attr
,
1356 &sensor_dev_attr_temp1_auto_temp_max
.dev_attr
.attr
,
1357 &sensor_dev_attr_temp2_auto_temp_max
.dev_attr
.attr
,
1358 &sensor_dev_attr_temp3_auto_temp_max
.dev_attr
.attr
,
1359 &sensor_dev_attr_temp1_auto_temp_crit
.dev_attr
.attr
,
1360 &sensor_dev_attr_temp2_auto_temp_crit
.dev_attr
.attr
,
1361 &sensor_dev_attr_temp3_auto_temp_crit
.dev_attr
.attr
,
1364 &dev_attr_cpu0_vid
.attr
,
1365 &dev_attr_alarms
.attr
,
1369 static const struct attribute_group lm85_group
= {
1370 .attrs
= lm85_attributes
,
1373 static struct attribute
*lm85_attributes_minctl
[] = {
1374 &sensor_dev_attr_pwm1_auto_pwm_minctl
.dev_attr
.attr
,
1375 &sensor_dev_attr_pwm2_auto_pwm_minctl
.dev_attr
.attr
,
1376 &sensor_dev_attr_pwm3_auto_pwm_minctl
.dev_attr
.attr
,
1380 static const struct attribute_group lm85_group_minctl
= {
1381 .attrs
= lm85_attributes_minctl
,
1384 static struct attribute
*lm85_attributes_temp_off
[] = {
1385 &sensor_dev_attr_temp1_auto_temp_off
.dev_attr
.attr
,
1386 &sensor_dev_attr_temp2_auto_temp_off
.dev_attr
.attr
,
1387 &sensor_dev_attr_temp3_auto_temp_off
.dev_attr
.attr
,
1391 static const struct attribute_group lm85_group_temp_off
= {
1392 .attrs
= lm85_attributes_temp_off
,
1395 static struct attribute
*lm85_attributes_in4
[] = {
1396 &sensor_dev_attr_in4_input
.dev_attr
.attr
,
1397 &sensor_dev_attr_in4_min
.dev_attr
.attr
,
1398 &sensor_dev_attr_in4_max
.dev_attr
.attr
,
1399 &sensor_dev_attr_in4_alarm
.dev_attr
.attr
,
1403 static const struct attribute_group lm85_group_in4
= {
1404 .attrs
= lm85_attributes_in4
,
1407 static struct attribute
*lm85_attributes_in567
[] = {
1408 &sensor_dev_attr_in5_input
.dev_attr
.attr
,
1409 &sensor_dev_attr_in6_input
.dev_attr
.attr
,
1410 &sensor_dev_attr_in7_input
.dev_attr
.attr
,
1411 &sensor_dev_attr_in5_min
.dev_attr
.attr
,
1412 &sensor_dev_attr_in6_min
.dev_attr
.attr
,
1413 &sensor_dev_attr_in7_min
.dev_attr
.attr
,
1414 &sensor_dev_attr_in5_max
.dev_attr
.attr
,
1415 &sensor_dev_attr_in6_max
.dev_attr
.attr
,
1416 &sensor_dev_attr_in7_max
.dev_attr
.attr
,
1417 &sensor_dev_attr_in5_alarm
.dev_attr
.attr
,
1418 &sensor_dev_attr_in6_alarm
.dev_attr
.attr
,
1419 &sensor_dev_attr_in7_alarm
.dev_attr
.attr
,
1423 static const struct attribute_group lm85_group_in567
= {
1424 .attrs
= lm85_attributes_in567
,
1427 static void lm85_init_client(struct i2c_client
*client
)
1431 /* Start monitoring if needed */
1432 value
= lm85_read_value(client
, LM85_REG_CONFIG
);
1433 if (!(value
& 0x01)) {
1434 dev_info(&client
->dev
, "Starting monitoring\n");
1435 lm85_write_value(client
, LM85_REG_CONFIG
, value
| 0x01);
1438 /* Warn about unusual configuration bits */
1440 dev_warn(&client
->dev
, "Device configuration is locked\n");
1441 if (!(value
& 0x04))
1442 dev_warn(&client
->dev
, "Device is not ready\n");
1445 static int lm85_is_fake(struct i2c_client
*client
)
1448 * Differenciate between real LM96000 and Winbond WPCD377I. The latter
1449 * emulate the former except that it has no hardware monitoring function
1450 * so the readings are always 0.
1455 for (i
= 0; i
< 8; i
++) {
1456 in_temp
= i2c_smbus_read_byte_data(client
, 0x20 + i
);
1457 fan
= i2c_smbus_read_byte_data(client
, 0x28 + i
);
1458 if (in_temp
!= 0x00 || fan
!= 0xff)
1465 /* Return 0 if detection is successful, -ENODEV otherwise */
1466 static int lm85_detect(struct i2c_client
*client
, struct i2c_board_info
*info
)
1468 struct i2c_adapter
*adapter
= client
->adapter
;
1469 int address
= client
->addr
;
1470 const char *type_name
= NULL
;
1471 int company
, verstep
;
1473 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
)) {
1474 /* We need to be able to do byte I/O */
1478 /* Determine the chip type */
1479 company
= lm85_read_value(client
, LM85_REG_COMPANY
);
1480 verstep
= lm85_read_value(client
, LM85_REG_VERSTEP
);
1482 dev_dbg(&adapter
->dev
,
1483 "Detecting device at 0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1484 address
, company
, verstep
);
1486 if (company
== LM85_COMPANY_NATIONAL
) {
1488 case LM85_VERSTEP_LM85C
:
1489 type_name
= "lm85c";
1491 case LM85_VERSTEP_LM85B
:
1492 type_name
= "lm85b";
1494 case LM85_VERSTEP_LM96000_1
:
1495 case LM85_VERSTEP_LM96000_2
:
1496 /* Check for Winbond WPCD377I */
1497 if (lm85_is_fake(client
)) {
1498 dev_dbg(&adapter
->dev
,
1499 "Found Winbond WPCD377I, ignoring\n");
1502 type_name
= "lm96000";
1505 } else if (company
== LM85_COMPANY_ANALOG_DEV
) {
1507 case LM85_VERSTEP_ADM1027
:
1508 type_name
= "adm1027";
1510 case LM85_VERSTEP_ADT7463
:
1511 case LM85_VERSTEP_ADT7463C
:
1512 type_name
= "adt7463";
1514 case LM85_VERSTEP_ADT7468_1
:
1515 case LM85_VERSTEP_ADT7468_2
:
1516 type_name
= "adt7468";
1519 } else if (company
== LM85_COMPANY_SMSC
) {
1521 case LM85_VERSTEP_EMC6D100_A0
:
1522 case LM85_VERSTEP_EMC6D100_A1
:
1523 /* Note: we can't tell a '100 from a '101 */
1524 type_name
= "emc6d100";
1526 case LM85_VERSTEP_EMC6D102
:
1527 type_name
= "emc6d102";
1529 case LM85_VERSTEP_EMC6D103_A0
:
1530 case LM85_VERSTEP_EMC6D103_A1
:
1531 type_name
= "emc6d103";
1533 case LM85_VERSTEP_EMC6D103S
:
1534 type_name
= "emc6d103s";
1542 strlcpy(info
->type
, type_name
, I2C_NAME_SIZE
);
1547 static const struct i2c_device_id lm85_id
[];
1549 static int lm85_probe(struct i2c_client
*client
)
1551 struct device
*dev
= &client
->dev
;
1552 struct device
*hwmon_dev
;
1553 struct lm85_data
*data
;
1556 data
= devm_kzalloc(dev
, sizeof(struct lm85_data
), GFP_KERNEL
);
1560 data
->client
= client
;
1561 if (client
->dev
.of_node
)
1562 data
->type
= (enum chips
)of_device_get_match_data(&client
->dev
);
1564 data
->type
= i2c_match_id(lm85_id
, client
)->driver_data
;
1565 mutex_init(&data
->update_lock
);
1567 /* Fill in the chip specific driver values */
1568 switch (data
->type
) {
1576 data
->freq_map
= adm1027_freq_map
;
1577 data
->freq_map_size
= ARRAY_SIZE(adm1027_freq_map
);
1580 data
->freq_map
= lm96000_freq_map
;
1581 data
->freq_map_size
= ARRAY_SIZE(lm96000_freq_map
);
1584 data
->freq_map
= lm85_freq_map
;
1585 data
->freq_map_size
= ARRAY_SIZE(lm85_freq_map
);
1588 /* Set the VRM version */
1589 data
->vrm
= vid_which_vrm();
1591 /* Initialize the LM85 chip */
1592 lm85_init_client(client
);
1595 data
->groups
[idx
++] = &lm85_group
;
1597 /* minctl and temp_off exist on all chips except emc6d103s */
1598 if (data
->type
!= emc6d103s
) {
1599 data
->groups
[idx
++] = &lm85_group_minctl
;
1600 data
->groups
[idx
++] = &lm85_group_temp_off
;
1604 * The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1605 * as a sixth digital VID input rather than an analog input.
1607 if (data
->type
== adt7463
|| data
->type
== adt7468
) {
1608 u8 vid
= lm85_read_value(client
, LM85_REG_VID
);
1610 data
->has_vid5
= true;
1613 if (!data
->has_vid5
)
1614 data
->groups
[idx
++] = &lm85_group_in4
;
1616 /* The EMC6D100 has 3 additional voltage inputs */
1617 if (data
->type
== emc6d100
)
1618 data
->groups
[idx
++] = &lm85_group_in567
;
1620 hwmon_dev
= devm_hwmon_device_register_with_groups(dev
, client
->name
,
1621 data
, data
->groups
);
1622 return PTR_ERR_OR_ZERO(hwmon_dev
);
1625 static const struct i2c_device_id lm85_id
[] = {
1626 { "adm1027", adm1027
},
1627 { "adt7463", adt7463
},
1628 { "adt7468", adt7468
},
1632 { "lm96000", lm96000
},
1633 { "emc6d100", emc6d100
},
1634 { "emc6d101", emc6d100
},
1635 { "emc6d102", emc6d102
},
1636 { "emc6d103", emc6d103
},
1637 { "emc6d103s", emc6d103s
},
1640 MODULE_DEVICE_TABLE(i2c
, lm85_id
);
1642 static const struct of_device_id __maybe_unused lm85_of_match
[] = {
1644 .compatible
= "adi,adm1027",
1645 .data
= (void *)adm1027
1648 .compatible
= "adi,adt7463",
1649 .data
= (void *)adt7463
1652 .compatible
= "adi,adt7468",
1653 .data
= (void *)adt7468
1656 .compatible
= "national,lm85",
1657 .data
= (void *)lm85
1660 .compatible
= "national,lm85b",
1661 .data
= (void *)lm85
1664 .compatible
= "national,lm85c",
1665 .data
= (void *)lm85
1668 .compatible
= "ti,lm96000",
1669 .data
= (void *)lm96000
1672 .compatible
= "smsc,emc6d100",
1673 .data
= (void *)emc6d100
1676 .compatible
= "smsc,emc6d101",
1677 .data
= (void *)emc6d100
1680 .compatible
= "smsc,emc6d102",
1681 .data
= (void *)emc6d102
1684 .compatible
= "smsc,emc6d103",
1685 .data
= (void *)emc6d103
1688 .compatible
= "smsc,emc6d103s",
1689 .data
= (void *)emc6d103s
1693 MODULE_DEVICE_TABLE(of
, lm85_of_match
);
1695 static struct i2c_driver lm85_driver
= {
1696 .class = I2C_CLASS_HWMON
,
1699 .of_match_table
= of_match_ptr(lm85_of_match
),
1701 .probe_new
= lm85_probe
,
1702 .id_table
= lm85_id
,
1703 .detect
= lm85_detect
,
1704 .address_list
= normal_i2c
,
1707 module_i2c_driver(lm85_driver
);
1709 MODULE_LICENSE("GPL");
1710 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1711 "Margit Schubert-While <margitsw@t-online.de>, "
1712 "Justin Thiessen <jthiessen@penguincomputing.com>");
1713 MODULE_DESCRIPTION("LM85-B, LM85-C driver");