2 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
3 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
4 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
5 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
6 * Copyright (C) 2009 Jean Delvare <khali@linux-fr.org>
8 * Derived from the lm83 driver by Jean Delvare
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/module.h>
16 #include <linux/init.h>
17 #include <linux/slab.h>
18 #include <linux/i2c.h>
19 #include <linux/hwmon.h>
20 #include <linux/hwmon-sysfs.h>
21 #include <linux/hwmon-vid.h>
22 #include <linux/err.h>
24 /* Indexes for the sysfs hooks */
36 * These are unique identifiers for the sysfs functions - unlike the
37 * numbers above, these are not also indexes into an array
43 /* 7475 Common Registers */
45 #define REG_DEVREV2 0x12 /* ADT7490 only */
47 #define REG_VTT 0x1E /* ADT7490 only */
48 #define REG_EXTEND3 0x1F /* ADT7490 only */
50 #define REG_VOLTAGE_BASE 0x20
51 #define REG_TEMP_BASE 0x25
52 #define REG_TACH_BASE 0x28
53 #define REG_PWM_BASE 0x30
54 #define REG_PWM_MAX_BASE 0x38
56 #define REG_DEVID 0x3D
57 #define REG_VENDID 0x3E
58 #define REG_DEVID2 0x3F
60 #define REG_STATUS1 0x41
61 #define REG_STATUS2 0x42
63 #define REG_VID 0x43 /* ADT7476 only */
65 #define REG_VOLTAGE_MIN_BASE 0x44
66 #define REG_VOLTAGE_MAX_BASE 0x45
68 #define REG_TEMP_MIN_BASE 0x4E
69 #define REG_TEMP_MAX_BASE 0x4F
71 #define REG_TACH_MIN_BASE 0x54
73 #define REG_PWM_CONFIG_BASE 0x5C
75 #define REG_TEMP_TRANGE_BASE 0x5F
77 #define REG_PWM_MIN_BASE 0x64
79 #define REG_TEMP_TMIN_BASE 0x67
80 #define REG_TEMP_THERM_BASE 0x6A
82 #define REG_REMOTE1_HYSTERSIS 0x6D
83 #define REG_REMOTE2_HYSTERSIS 0x6E
85 #define REG_TEMP_OFFSET_BASE 0x70
87 #define REG_CONFIG2 0x73
89 #define REG_EXTEND1 0x76
90 #define REG_EXTEND2 0x77
92 #define REG_CONFIG3 0x78
93 #define REG_CONFIG5 0x7C
94 #define REG_CONFIG4 0x7D
96 #define REG_STATUS4 0x81 /* ADT7490 only */
98 #define REG_VTT_MIN 0x84 /* ADT7490 only */
99 #define REG_VTT_MAX 0x86 /* ADT7490 only */
101 #define VID_VIDSEL 0x80 /* ADT7476 only */
103 #define CONFIG2_ATTN 0x20
105 #define CONFIG3_SMBALERT 0x01
106 #define CONFIG3_THERM 0x02
108 #define CONFIG4_PINFUNC 0x03
109 #define CONFIG4_MAXDUTY 0x08
110 #define CONFIG4_ATTN_IN10 0x30
111 #define CONFIG4_ATTN_IN43 0xC0
113 #define CONFIG5_TWOSCOMP 0x01
114 #define CONFIG5_TEMPOFFSET 0x02
115 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
117 /* ADT7475 Settings */
119 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
120 #define ADT7475_TEMP_COUNT 3
121 #define ADT7475_TACH_COUNT 4
122 #define ADT7475_PWM_COUNT 3
124 /* Macro to read the registers */
126 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
128 /* Macros to easily index the registers */
130 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
131 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
133 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
134 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
135 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
136 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
138 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
139 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
140 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
142 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
143 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
144 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
145 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
146 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
147 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
148 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
150 static const unsigned short normal_i2c
[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END
};
152 enum chips
{ adt7473
, adt7475
, adt7476
, adt7490
};
154 static const struct i2c_device_id adt7475_id
[] = {
155 { "adt7473", adt7473
},
156 { "adt7475", adt7475
},
157 { "adt7476", adt7476
},
158 { "adt7490", adt7490
},
161 MODULE_DEVICE_TABLE(i2c
, adt7475_id
);
163 struct adt7475_data
{
164 struct device
*hwmon_dev
;
167 unsigned long measure_updated
;
168 unsigned long limits_updated
;
174 u8 bypass_attn
; /* Bypass voltage attenuator */
191 static struct i2c_driver adt7475_driver
;
192 static struct adt7475_data
*adt7475_update_device(struct device
*dev
);
193 static void adt7475_read_hystersis(struct i2c_client
*client
);
194 static void adt7475_read_pwm(struct i2c_client
*client
, int index
);
196 /* Given a temp value, convert it to register value */
198 static inline u16
temp2reg(struct adt7475_data
*data
, long val
)
202 if (!(data
->config5
& CONFIG5_TWOSCOMP
)) {
203 val
= SENSORS_LIMIT(val
, -64000, 191000);
204 ret
= (val
+ 64500) / 1000;
206 val
= SENSORS_LIMIT(val
, -128000, 127000);
208 ret
= (256500 + val
) / 1000;
210 ret
= (val
+ 500) / 1000;
216 /* Given a register value, convert it to a real temp value */
218 static inline int reg2temp(struct adt7475_data
*data
, u16 reg
)
220 if (data
->config5
& CONFIG5_TWOSCOMP
) {
222 return (reg
- 1024) * 250;
226 return (reg
- 256) * 250;
229 static inline int tach2rpm(u16 tach
)
231 if (tach
== 0 || tach
== 0xFFFF)
234 return (90000 * 60) / tach
;
237 static inline u16
rpm2tach(unsigned long rpm
)
242 return SENSORS_LIMIT((90000 * 60) / rpm
, 1, 0xFFFF);
245 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
246 static const int adt7473_in_scaling
[ADT7475_VOLTAGE_COUNT
+ 1][2] = {
247 { 45, 94 }, /* +2.5V */
248 { 175, 525 }, /* Vccp */
249 { 68, 71 }, /* Vcc */
250 { 93, 47 }, /* +5V */
251 { 120, 20 }, /* +12V */
252 { 45, 45 }, /* Vtt */
255 static inline int reg2volt(int channel
, u16 reg
, u8 bypass_attn
)
257 const int *r
= adt7473_in_scaling
[channel
];
259 if (bypass_attn
& (1 << channel
))
260 return DIV_ROUND_CLOSEST(reg
* 2250, 1024);
261 return DIV_ROUND_CLOSEST(reg
* (r
[0] + r
[1]) * 2250, r
[1] * 1024);
264 static inline u16
volt2reg(int channel
, long volt
, u8 bypass_attn
)
266 const int *r
= adt7473_in_scaling
[channel
];
269 if (bypass_attn
& (1 << channel
))
270 reg
= (volt
* 1024) / 2250;
272 reg
= (volt
* r
[1] * 1024) / ((r
[0] + r
[1]) * 2250);
273 return SENSORS_LIMIT(reg
, 0, 1023) & (0xff << 2);
276 static u16
adt7475_read_word(struct i2c_client
*client
, int reg
)
280 val
= i2c_smbus_read_byte_data(client
, reg
);
281 val
|= (i2c_smbus_read_byte_data(client
, reg
+ 1) << 8);
286 static void adt7475_write_word(struct i2c_client
*client
, int reg
, u16 val
)
288 i2c_smbus_write_byte_data(client
, reg
+ 1, val
>> 8);
289 i2c_smbus_write_byte_data(client
, reg
, val
& 0xFF);
293 * Find the nearest value in a table - used for pwm frequency and
296 static int find_nearest(long val
, const int *array
, int size
)
303 if (val
> array
[size
- 1])
306 for (i
= 0; i
< size
- 1; i
++) {
309 if (val
> array
[i
+ 1])
313 b
= array
[i
+ 1] - val
;
315 return (a
<= b
) ? i
: i
+ 1;
321 static ssize_t
show_voltage(struct device
*dev
, struct device_attribute
*attr
,
324 struct adt7475_data
*data
= adt7475_update_device(dev
);
325 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
330 return sprintf(buf
, "%d\n",
331 (data
->alarms
>> sattr
->index
) & 1);
333 val
= data
->voltage
[sattr
->nr
][sattr
->index
];
334 return sprintf(buf
, "%d\n",
335 reg2volt(sattr
->index
, val
, data
->bypass_attn
));
339 static ssize_t
set_voltage(struct device
*dev
, struct device_attribute
*attr
,
340 const char *buf
, size_t count
)
343 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
344 struct i2c_client
*client
= to_i2c_client(dev
);
345 struct adt7475_data
*data
= i2c_get_clientdata(client
);
349 if (kstrtol(buf
, 10, &val
))
352 mutex_lock(&data
->lock
);
354 data
->voltage
[sattr
->nr
][sattr
->index
] =
355 volt2reg(sattr
->index
, val
, data
->bypass_attn
);
357 if (sattr
->index
< ADT7475_VOLTAGE_COUNT
) {
358 if (sattr
->nr
== MIN
)
359 reg
= VOLTAGE_MIN_REG(sattr
->index
);
361 reg
= VOLTAGE_MAX_REG(sattr
->index
);
363 if (sattr
->nr
== MIN
)
369 i2c_smbus_write_byte_data(client
, reg
,
370 data
->voltage
[sattr
->nr
][sattr
->index
] >> 2);
371 mutex_unlock(&data
->lock
);
376 static ssize_t
show_temp(struct device
*dev
, struct device_attribute
*attr
,
379 struct adt7475_data
*data
= adt7475_update_device(dev
);
380 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
385 mutex_lock(&data
->lock
);
386 out
= data
->temp
[sattr
->nr
][sattr
->index
];
387 if (sattr
->index
!= 1)
388 out
= (out
>> 4) & 0xF;
392 * Show the value as an absolute number tied to
395 out
= reg2temp(data
, data
->temp
[THERM
][sattr
->index
]) -
397 mutex_unlock(&data
->lock
);
402 * Offset is always 2's complement, regardless of the
405 mutex_lock(&data
->lock
);
406 out
= (s8
)data
->temp
[sattr
->nr
][sattr
->index
];
407 if (data
->config5
& CONFIG5_TEMPOFFSET
)
411 mutex_unlock(&data
->lock
);
415 out
= (data
->alarms
>> (sattr
->index
+ 4)) & 1;
419 /* Note - only for remote1 and remote2 */
420 out
= !!(data
->alarms
& (sattr
->index
? 0x8000 : 0x4000));
424 /* All other temp values are in the configured format */
425 out
= reg2temp(data
, data
->temp
[sattr
->nr
][sattr
->index
]);
428 return sprintf(buf
, "%d\n", out
);
431 static ssize_t
set_temp(struct device
*dev
, struct device_attribute
*attr
,
432 const char *buf
, size_t count
)
434 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
435 struct i2c_client
*client
= to_i2c_client(dev
);
436 struct adt7475_data
*data
= i2c_get_clientdata(client
);
437 unsigned char reg
= 0;
442 if (kstrtol(buf
, 10, &val
))
445 mutex_lock(&data
->lock
);
447 /* We need the config register in all cases for temp <-> reg conv. */
448 data
->config5
= adt7475_read(REG_CONFIG5
);
452 if (data
->config5
& CONFIG5_TEMPOFFSET
) {
453 val
= SENSORS_LIMIT(val
, -63000, 127000);
454 out
= data
->temp
[OFFSET
][sattr
->index
] = val
/ 1000;
456 val
= SENSORS_LIMIT(val
, -63000, 64000);
457 out
= data
->temp
[OFFSET
][sattr
->index
] = val
/ 500;
463 * The value will be given as an absolute value, turn it
464 * into an offset based on THERM
467 /* Read fresh THERM and HYSTERSIS values from the chip */
468 data
->temp
[THERM
][sattr
->index
] =
469 adt7475_read(TEMP_THERM_REG(sattr
->index
)) << 2;
470 adt7475_read_hystersis(client
);
472 temp
= reg2temp(data
, data
->temp
[THERM
][sattr
->index
]);
473 val
= SENSORS_LIMIT(val
, temp
- 15000, temp
);
474 val
= (temp
- val
) / 1000;
476 if (sattr
->index
!= 1) {
477 data
->temp
[HYSTERSIS
][sattr
->index
] &= 0xF0;
478 data
->temp
[HYSTERSIS
][sattr
->index
] |= (val
& 0xF) << 4;
480 data
->temp
[HYSTERSIS
][sattr
->index
] &= 0x0F;
481 data
->temp
[HYSTERSIS
][sattr
->index
] |= (val
& 0xF);
484 out
= data
->temp
[HYSTERSIS
][sattr
->index
];
488 data
->temp
[sattr
->nr
][sattr
->index
] = temp2reg(data
, val
);
491 * We maintain an extra 2 digits of precision for simplicity
492 * - shift those back off before writing the value
494 out
= (u8
) (data
->temp
[sattr
->nr
][sattr
->index
] >> 2);
499 reg
= TEMP_MIN_REG(sattr
->index
);
502 reg
= TEMP_MAX_REG(sattr
->index
);
505 reg
= TEMP_OFFSET_REG(sattr
->index
);
508 reg
= TEMP_TMIN_REG(sattr
->index
);
511 reg
= TEMP_THERM_REG(sattr
->index
);
514 if (sattr
->index
!= 2)
515 reg
= REG_REMOTE1_HYSTERSIS
;
517 reg
= REG_REMOTE2_HYSTERSIS
;
522 i2c_smbus_write_byte_data(client
, reg
, out
);
524 mutex_unlock(&data
->lock
);
529 * Table of autorange values - the user will write the value in millidegrees,
530 * and we'll convert it
532 static const int autorange_table
[] = {
533 2000, 2500, 3330, 4000, 5000, 6670, 8000,
534 10000, 13330, 16000, 20000, 26670, 32000, 40000,
538 static ssize_t
show_point2(struct device
*dev
, struct device_attribute
*attr
,
541 struct adt7475_data
*data
= adt7475_update_device(dev
);
542 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
545 mutex_lock(&data
->lock
);
546 out
= (data
->range
[sattr
->index
] >> 4) & 0x0F;
547 val
= reg2temp(data
, data
->temp
[AUTOMIN
][sattr
->index
]);
548 mutex_unlock(&data
->lock
);
550 return sprintf(buf
, "%d\n", val
+ autorange_table
[out
]);
553 static ssize_t
set_point2(struct device
*dev
, struct device_attribute
*attr
,
554 const char *buf
, size_t count
)
556 struct i2c_client
*client
= to_i2c_client(dev
);
557 struct adt7475_data
*data
= i2c_get_clientdata(client
);
558 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
562 if (kstrtol(buf
, 10, &val
))
565 mutex_lock(&data
->lock
);
567 /* Get a fresh copy of the needed registers */
568 data
->config5
= adt7475_read(REG_CONFIG5
);
569 data
->temp
[AUTOMIN
][sattr
->index
] =
570 adt7475_read(TEMP_TMIN_REG(sattr
->index
)) << 2;
571 data
->range
[sattr
->index
] =
572 adt7475_read(TEMP_TRANGE_REG(sattr
->index
));
575 * The user will write an absolute value, so subtract the start point
576 * to figure the range
578 temp
= reg2temp(data
, data
->temp
[AUTOMIN
][sattr
->index
]);
579 val
= SENSORS_LIMIT(val
, temp
+ autorange_table
[0],
580 temp
+ autorange_table
[ARRAY_SIZE(autorange_table
) - 1]);
583 /* Find the nearest table entry to what the user wrote */
584 val
= find_nearest(val
, autorange_table
, ARRAY_SIZE(autorange_table
));
586 data
->range
[sattr
->index
] &= ~0xF0;
587 data
->range
[sattr
->index
] |= val
<< 4;
589 i2c_smbus_write_byte_data(client
, TEMP_TRANGE_REG(sattr
->index
),
590 data
->range
[sattr
->index
]);
592 mutex_unlock(&data
->lock
);
596 static ssize_t
show_tach(struct device
*dev
, struct device_attribute
*attr
,
599 struct adt7475_data
*data
= adt7475_update_device(dev
);
600 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
603 if (sattr
->nr
== ALARM
)
604 out
= (data
->alarms
>> (sattr
->index
+ 10)) & 1;
606 out
= tach2rpm(data
->tach
[sattr
->nr
][sattr
->index
]);
608 return sprintf(buf
, "%d\n", out
);
611 static ssize_t
set_tach(struct device
*dev
, struct device_attribute
*attr
,
612 const char *buf
, size_t count
)
615 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
616 struct i2c_client
*client
= to_i2c_client(dev
);
617 struct adt7475_data
*data
= i2c_get_clientdata(client
);
620 if (kstrtoul(buf
, 10, &val
))
623 mutex_lock(&data
->lock
);
625 data
->tach
[MIN
][sattr
->index
] = rpm2tach(val
);
627 adt7475_write_word(client
, TACH_MIN_REG(sattr
->index
),
628 data
->tach
[MIN
][sattr
->index
]);
630 mutex_unlock(&data
->lock
);
634 static ssize_t
show_pwm(struct device
*dev
, struct device_attribute
*attr
,
637 struct adt7475_data
*data
= adt7475_update_device(dev
);
638 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
640 return sprintf(buf
, "%d\n", data
->pwm
[sattr
->nr
][sattr
->index
]);
643 static ssize_t
show_pwmchan(struct device
*dev
, struct device_attribute
*attr
,
646 struct adt7475_data
*data
= adt7475_update_device(dev
);
647 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
649 return sprintf(buf
, "%d\n", data
->pwmchan
[sattr
->index
]);
652 static ssize_t
show_pwmctrl(struct device
*dev
, struct device_attribute
*attr
,
655 struct adt7475_data
*data
= adt7475_update_device(dev
);
656 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
658 return sprintf(buf
, "%d\n", data
->pwmctl
[sattr
->index
]);
661 static ssize_t
set_pwm(struct device
*dev
, struct device_attribute
*attr
,
662 const char *buf
, size_t count
)
665 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
666 struct i2c_client
*client
= to_i2c_client(dev
);
667 struct adt7475_data
*data
= i2c_get_clientdata(client
);
668 unsigned char reg
= 0;
671 if (kstrtol(buf
, 10, &val
))
674 mutex_lock(&data
->lock
);
678 /* Get a fresh value for CONTROL */
679 data
->pwm
[CONTROL
][sattr
->index
] =
680 adt7475_read(PWM_CONFIG_REG(sattr
->index
));
683 * If we are not in manual mode, then we shouldn't allow
684 * the user to set the pwm speed
686 if (((data
->pwm
[CONTROL
][sattr
->index
] >> 5) & 7) != 7) {
687 mutex_unlock(&data
->lock
);
691 reg
= PWM_REG(sattr
->index
);
695 reg
= PWM_MIN_REG(sattr
->index
);
699 reg
= PWM_MAX_REG(sattr
->index
);
703 data
->pwm
[sattr
->nr
][sattr
->index
] = SENSORS_LIMIT(val
, 0, 0xFF);
704 i2c_smbus_write_byte_data(client
, reg
,
705 data
->pwm
[sattr
->nr
][sattr
->index
]);
707 mutex_unlock(&data
->lock
);
712 /* Called by set_pwmctrl and set_pwmchan */
714 static int hw_set_pwm(struct i2c_client
*client
, int index
,
715 unsigned int pwmctl
, unsigned int pwmchan
)
717 struct adt7475_data
*data
= i2c_get_clientdata(client
);
722 val
= 0x03; /* Run at full speed */
725 val
= 0x07; /* Manual mode */
730 /* Remote1 controls PWM */
734 /* local controls PWM */
738 /* remote2 controls PWM */
742 /* local/remote2 control PWM */
746 /* All three control PWM */
757 data
->pwmctl
[index
] = pwmctl
;
758 data
->pwmchan
[index
] = pwmchan
;
760 data
->pwm
[CONTROL
][index
] &= ~0xE0;
761 data
->pwm
[CONTROL
][index
] |= (val
& 7) << 5;
763 i2c_smbus_write_byte_data(client
, PWM_CONFIG_REG(index
),
764 data
->pwm
[CONTROL
][index
]);
769 static ssize_t
set_pwmchan(struct device
*dev
, struct device_attribute
*attr
,
770 const char *buf
, size_t count
)
772 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
773 struct i2c_client
*client
= to_i2c_client(dev
);
774 struct adt7475_data
*data
= i2c_get_clientdata(client
);
778 if (kstrtol(buf
, 10, &val
))
781 mutex_lock(&data
->lock
);
782 /* Read Modify Write PWM values */
783 adt7475_read_pwm(client
, sattr
->index
);
784 r
= hw_set_pwm(client
, sattr
->index
, data
->pwmctl
[sattr
->index
], val
);
787 mutex_unlock(&data
->lock
);
792 static ssize_t
set_pwmctrl(struct device
*dev
, struct device_attribute
*attr
,
793 const char *buf
, size_t count
)
795 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
796 struct i2c_client
*client
= to_i2c_client(dev
);
797 struct adt7475_data
*data
= i2c_get_clientdata(client
);
801 if (kstrtol(buf
, 10, &val
))
804 mutex_lock(&data
->lock
);
805 /* Read Modify Write PWM values */
806 adt7475_read_pwm(client
, sattr
->index
);
807 r
= hw_set_pwm(client
, sattr
->index
, val
, data
->pwmchan
[sattr
->index
]);
810 mutex_unlock(&data
->lock
);
815 /* List of frequencies for the PWM */
816 static const int pwmfreq_table
[] = {
817 11, 14, 22, 29, 35, 44, 58, 88
820 static ssize_t
show_pwmfreq(struct device
*dev
, struct device_attribute
*attr
,
823 struct adt7475_data
*data
= adt7475_update_device(dev
);
824 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
826 return sprintf(buf
, "%d\n",
827 pwmfreq_table
[data
->range
[sattr
->index
] & 7]);
830 static ssize_t
set_pwmfreq(struct device
*dev
, struct device_attribute
*attr
,
831 const char *buf
, size_t count
)
833 struct sensor_device_attribute_2
*sattr
= to_sensor_dev_attr_2(attr
);
834 struct i2c_client
*client
= to_i2c_client(dev
);
835 struct adt7475_data
*data
= i2c_get_clientdata(client
);
839 if (kstrtol(buf
, 10, &val
))
842 out
= find_nearest(val
, pwmfreq_table
, ARRAY_SIZE(pwmfreq_table
));
844 mutex_lock(&data
->lock
);
846 data
->range
[sattr
->index
] =
847 adt7475_read(TEMP_TRANGE_REG(sattr
->index
));
848 data
->range
[sattr
->index
] &= ~7;
849 data
->range
[sattr
->index
] |= out
;
851 i2c_smbus_write_byte_data(client
, TEMP_TRANGE_REG(sattr
->index
),
852 data
->range
[sattr
->index
]);
854 mutex_unlock(&data
->lock
);
858 static ssize_t
show_pwm_at_crit(struct device
*dev
,
859 struct device_attribute
*devattr
, char *buf
)
861 struct adt7475_data
*data
= adt7475_update_device(dev
);
862 return sprintf(buf
, "%d\n", !!(data
->config4
& CONFIG4_MAXDUTY
));
865 static ssize_t
set_pwm_at_crit(struct device
*dev
,
866 struct device_attribute
*devattr
,
867 const char *buf
, size_t count
)
869 struct i2c_client
*client
= to_i2c_client(dev
);
870 struct adt7475_data
*data
= i2c_get_clientdata(client
);
873 if (kstrtol(buf
, 10, &val
))
875 if (val
!= 0 && val
!= 1)
878 mutex_lock(&data
->lock
);
879 data
->config4
= i2c_smbus_read_byte_data(client
, REG_CONFIG4
);
881 data
->config4
|= CONFIG4_MAXDUTY
;
883 data
->config4
&= ~CONFIG4_MAXDUTY
;
884 i2c_smbus_write_byte_data(client
, REG_CONFIG4
, data
->config4
);
885 mutex_unlock(&data
->lock
);
890 static ssize_t
show_vrm(struct device
*dev
, struct device_attribute
*devattr
,
893 struct adt7475_data
*data
= dev_get_drvdata(dev
);
894 return sprintf(buf
, "%d\n", (int)data
->vrm
);
897 static ssize_t
set_vrm(struct device
*dev
, struct device_attribute
*devattr
,
898 const char *buf
, size_t count
)
900 struct adt7475_data
*data
= dev_get_drvdata(dev
);
903 if (kstrtol(buf
, 10, &val
))
905 if (val
< 0 || val
> 255)
912 static ssize_t
show_vid(struct device
*dev
, struct device_attribute
*devattr
,
915 struct adt7475_data
*data
= adt7475_update_device(dev
);
916 return sprintf(buf
, "%d\n", vid_from_reg(data
->vid
, data
->vrm
));
919 static SENSOR_DEVICE_ATTR_2(in0_input
, S_IRUGO
, show_voltage
, NULL
, INPUT
, 0);
920 static SENSOR_DEVICE_ATTR_2(in0_max
, S_IRUGO
| S_IWUSR
, show_voltage
,
921 set_voltage
, MAX
, 0);
922 static SENSOR_DEVICE_ATTR_2(in0_min
, S_IRUGO
| S_IWUSR
, show_voltage
,
923 set_voltage
, MIN
, 0);
924 static SENSOR_DEVICE_ATTR_2(in0_alarm
, S_IRUGO
, show_voltage
, NULL
, ALARM
, 0);
925 static SENSOR_DEVICE_ATTR_2(in1_input
, S_IRUGO
, show_voltage
, NULL
, INPUT
, 1);
926 static SENSOR_DEVICE_ATTR_2(in1_max
, S_IRUGO
| S_IWUSR
, show_voltage
,
927 set_voltage
, MAX
, 1);
928 static SENSOR_DEVICE_ATTR_2(in1_min
, S_IRUGO
| S_IWUSR
, show_voltage
,
929 set_voltage
, MIN
, 1);
930 static SENSOR_DEVICE_ATTR_2(in1_alarm
, S_IRUGO
, show_voltage
, NULL
, ALARM
, 1);
931 static SENSOR_DEVICE_ATTR_2(in2_input
, S_IRUGO
, show_voltage
, NULL
, INPUT
, 2);
932 static SENSOR_DEVICE_ATTR_2(in2_max
, S_IRUGO
| S_IWUSR
, show_voltage
,
933 set_voltage
, MAX
, 2);
934 static SENSOR_DEVICE_ATTR_2(in2_min
, S_IRUGO
| S_IWUSR
, show_voltage
,
935 set_voltage
, MIN
, 2);
936 static SENSOR_DEVICE_ATTR_2(in2_alarm
, S_IRUGO
, show_voltage
, NULL
, ALARM
, 2);
937 static SENSOR_DEVICE_ATTR_2(in3_input
, S_IRUGO
, show_voltage
, NULL
, INPUT
, 3);
938 static SENSOR_DEVICE_ATTR_2(in3_max
, S_IRUGO
| S_IWUSR
, show_voltage
,
939 set_voltage
, MAX
, 3);
940 static SENSOR_DEVICE_ATTR_2(in3_min
, S_IRUGO
| S_IWUSR
, show_voltage
,
941 set_voltage
, MIN
, 3);
942 static SENSOR_DEVICE_ATTR_2(in3_alarm
, S_IRUGO
, show_voltage
, NULL
, ALARM
, 3);
943 static SENSOR_DEVICE_ATTR_2(in4_input
, S_IRUGO
, show_voltage
, NULL
, INPUT
, 4);
944 static SENSOR_DEVICE_ATTR_2(in4_max
, S_IRUGO
| S_IWUSR
, show_voltage
,
945 set_voltage
, MAX
, 4);
946 static SENSOR_DEVICE_ATTR_2(in4_min
, S_IRUGO
| S_IWUSR
, show_voltage
,
947 set_voltage
, MIN
, 4);
948 static SENSOR_DEVICE_ATTR_2(in4_alarm
, S_IRUGO
, show_voltage
, NULL
, ALARM
, 8);
949 static SENSOR_DEVICE_ATTR_2(in5_input
, S_IRUGO
, show_voltage
, NULL
, INPUT
, 5);
950 static SENSOR_DEVICE_ATTR_2(in5_max
, S_IRUGO
| S_IWUSR
, show_voltage
,
951 set_voltage
, MAX
, 5);
952 static SENSOR_DEVICE_ATTR_2(in5_min
, S_IRUGO
| S_IWUSR
, show_voltage
,
953 set_voltage
, MIN
, 5);
954 static SENSOR_DEVICE_ATTR_2(in5_alarm
, S_IRUGO
, show_voltage
, NULL
, ALARM
, 31);
955 static SENSOR_DEVICE_ATTR_2(temp1_input
, S_IRUGO
, show_temp
, NULL
, INPUT
, 0);
956 static SENSOR_DEVICE_ATTR_2(temp1_alarm
, S_IRUGO
, show_temp
, NULL
, ALARM
, 0);
957 static SENSOR_DEVICE_ATTR_2(temp1_fault
, S_IRUGO
, show_temp
, NULL
, FAULT
, 0);
958 static SENSOR_DEVICE_ATTR_2(temp1_max
, S_IRUGO
| S_IWUSR
, show_temp
, set_temp
,
960 static SENSOR_DEVICE_ATTR_2(temp1_min
, S_IRUGO
| S_IWUSR
, show_temp
, set_temp
,
962 static SENSOR_DEVICE_ATTR_2(temp1_offset
, S_IRUGO
| S_IWUSR
, show_temp
,
963 set_temp
, OFFSET
, 0);
964 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp
, S_IRUGO
| S_IWUSR
,
965 show_temp
, set_temp
, AUTOMIN
, 0);
966 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp
, S_IRUGO
| S_IWUSR
,
967 show_point2
, set_point2
, 0, 0);
968 static SENSOR_DEVICE_ATTR_2(temp1_crit
, S_IRUGO
| S_IWUSR
, show_temp
, set_temp
,
970 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst
, S_IRUGO
| S_IWUSR
, show_temp
,
971 set_temp
, HYSTERSIS
, 0);
972 static SENSOR_DEVICE_ATTR_2(temp2_input
, S_IRUGO
, show_temp
, NULL
, INPUT
, 1);
973 static SENSOR_DEVICE_ATTR_2(temp2_alarm
, S_IRUGO
, show_temp
, NULL
, ALARM
, 1);
974 static SENSOR_DEVICE_ATTR_2(temp2_max
, S_IRUGO
| S_IWUSR
, show_temp
, set_temp
,
976 static SENSOR_DEVICE_ATTR_2(temp2_min
, S_IRUGO
| S_IWUSR
, show_temp
, set_temp
,
978 static SENSOR_DEVICE_ATTR_2(temp2_offset
, S_IRUGO
| S_IWUSR
, show_temp
,
979 set_temp
, OFFSET
, 1);
980 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp
, S_IRUGO
| S_IWUSR
,
981 show_temp
, set_temp
, AUTOMIN
, 1);
982 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp
, S_IRUGO
| S_IWUSR
,
983 show_point2
, set_point2
, 0, 1);
984 static SENSOR_DEVICE_ATTR_2(temp2_crit
, S_IRUGO
| S_IWUSR
, show_temp
, set_temp
,
986 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst
, S_IRUGO
| S_IWUSR
, show_temp
,
987 set_temp
, HYSTERSIS
, 1);
988 static SENSOR_DEVICE_ATTR_2(temp3_input
, S_IRUGO
, show_temp
, NULL
, INPUT
, 2);
989 static SENSOR_DEVICE_ATTR_2(temp3_alarm
, S_IRUGO
, show_temp
, NULL
, ALARM
, 2);
990 static SENSOR_DEVICE_ATTR_2(temp3_fault
, S_IRUGO
, show_temp
, NULL
, FAULT
, 2);
991 static SENSOR_DEVICE_ATTR_2(temp3_max
, S_IRUGO
| S_IWUSR
, show_temp
, set_temp
,
993 static SENSOR_DEVICE_ATTR_2(temp3_min
, S_IRUGO
| S_IWUSR
, show_temp
, set_temp
,
995 static SENSOR_DEVICE_ATTR_2(temp3_offset
, S_IRUGO
| S_IWUSR
, show_temp
,
996 set_temp
, OFFSET
, 2);
997 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp
, S_IRUGO
| S_IWUSR
,
998 show_temp
, set_temp
, AUTOMIN
, 2);
999 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp
, S_IRUGO
| S_IWUSR
,
1000 show_point2
, set_point2
, 0, 2);
1001 static SENSOR_DEVICE_ATTR_2(temp3_crit
, S_IRUGO
| S_IWUSR
, show_temp
, set_temp
,
1003 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst
, S_IRUGO
| S_IWUSR
, show_temp
,
1004 set_temp
, HYSTERSIS
, 2);
1005 static SENSOR_DEVICE_ATTR_2(fan1_input
, S_IRUGO
, show_tach
, NULL
, INPUT
, 0);
1006 static SENSOR_DEVICE_ATTR_2(fan1_min
, S_IRUGO
| S_IWUSR
, show_tach
, set_tach
,
1008 static SENSOR_DEVICE_ATTR_2(fan1_alarm
, S_IRUGO
, show_tach
, NULL
, ALARM
, 0);
1009 static SENSOR_DEVICE_ATTR_2(fan2_input
, S_IRUGO
, show_tach
, NULL
, INPUT
, 1);
1010 static SENSOR_DEVICE_ATTR_2(fan2_min
, S_IRUGO
| S_IWUSR
, show_tach
, set_tach
,
1012 static SENSOR_DEVICE_ATTR_2(fan2_alarm
, S_IRUGO
, show_tach
, NULL
, ALARM
, 1);
1013 static SENSOR_DEVICE_ATTR_2(fan3_input
, S_IRUGO
, show_tach
, NULL
, INPUT
, 2);
1014 static SENSOR_DEVICE_ATTR_2(fan3_min
, S_IRUGO
| S_IWUSR
, show_tach
, set_tach
,
1016 static SENSOR_DEVICE_ATTR_2(fan3_alarm
, S_IRUGO
, show_tach
, NULL
, ALARM
, 2);
1017 static SENSOR_DEVICE_ATTR_2(fan4_input
, S_IRUGO
, show_tach
, NULL
, INPUT
, 3);
1018 static SENSOR_DEVICE_ATTR_2(fan4_min
, S_IRUGO
| S_IWUSR
, show_tach
, set_tach
,
1020 static SENSOR_DEVICE_ATTR_2(fan4_alarm
, S_IRUGO
, show_tach
, NULL
, ALARM
, 3);
1021 static SENSOR_DEVICE_ATTR_2(pwm1
, S_IRUGO
| S_IWUSR
, show_pwm
, set_pwm
, INPUT
,
1023 static SENSOR_DEVICE_ATTR_2(pwm1_freq
, S_IRUGO
| S_IWUSR
, show_pwmfreq
,
1024 set_pwmfreq
, INPUT
, 0);
1025 static SENSOR_DEVICE_ATTR_2(pwm1_enable
, S_IRUGO
| S_IWUSR
, show_pwmctrl
,
1026 set_pwmctrl
, INPUT
, 0);
1027 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp
, S_IRUGO
| S_IWUSR
,
1028 show_pwmchan
, set_pwmchan
, INPUT
, 0);
1029 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm
, S_IRUGO
| S_IWUSR
, show_pwm
,
1031 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm
, S_IRUGO
| S_IWUSR
, show_pwm
,
1033 static SENSOR_DEVICE_ATTR_2(pwm2
, S_IRUGO
| S_IWUSR
, show_pwm
, set_pwm
, INPUT
,
1035 static SENSOR_DEVICE_ATTR_2(pwm2_freq
, S_IRUGO
| S_IWUSR
, show_pwmfreq
,
1036 set_pwmfreq
, INPUT
, 1);
1037 static SENSOR_DEVICE_ATTR_2(pwm2_enable
, S_IRUGO
| S_IWUSR
, show_pwmctrl
,
1038 set_pwmctrl
, INPUT
, 1);
1039 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp
, S_IRUGO
| S_IWUSR
,
1040 show_pwmchan
, set_pwmchan
, INPUT
, 1);
1041 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm
, S_IRUGO
| S_IWUSR
, show_pwm
,
1043 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm
, S_IRUGO
| S_IWUSR
, show_pwm
,
1045 static SENSOR_DEVICE_ATTR_2(pwm3
, S_IRUGO
| S_IWUSR
, show_pwm
, set_pwm
, INPUT
,
1047 static SENSOR_DEVICE_ATTR_2(pwm3_freq
, S_IRUGO
| S_IWUSR
, show_pwmfreq
,
1048 set_pwmfreq
, INPUT
, 2);
1049 static SENSOR_DEVICE_ATTR_2(pwm3_enable
, S_IRUGO
| S_IWUSR
, show_pwmctrl
,
1050 set_pwmctrl
, INPUT
, 2);
1051 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp
, S_IRUGO
| S_IWUSR
,
1052 show_pwmchan
, set_pwmchan
, INPUT
, 2);
1053 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm
, S_IRUGO
| S_IWUSR
, show_pwm
,
1055 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm
, S_IRUGO
| S_IWUSR
, show_pwm
,
1058 /* Non-standard name, might need revisiting */
1059 static DEVICE_ATTR(pwm_use_point2_pwm_at_crit
, S_IWUSR
| S_IRUGO
,
1060 show_pwm_at_crit
, set_pwm_at_crit
);
1062 static DEVICE_ATTR(vrm
, S_IWUSR
| S_IRUGO
, show_vrm
, set_vrm
);
1063 static DEVICE_ATTR(cpu0_vid
, S_IRUGO
, show_vid
, NULL
);
1065 static struct attribute
*adt7475_attrs
[] = {
1066 &sensor_dev_attr_in1_input
.dev_attr
.attr
,
1067 &sensor_dev_attr_in1_max
.dev_attr
.attr
,
1068 &sensor_dev_attr_in1_min
.dev_attr
.attr
,
1069 &sensor_dev_attr_in1_alarm
.dev_attr
.attr
,
1070 &sensor_dev_attr_in2_input
.dev_attr
.attr
,
1071 &sensor_dev_attr_in2_max
.dev_attr
.attr
,
1072 &sensor_dev_attr_in2_min
.dev_attr
.attr
,
1073 &sensor_dev_attr_in2_alarm
.dev_attr
.attr
,
1074 &sensor_dev_attr_temp1_input
.dev_attr
.attr
,
1075 &sensor_dev_attr_temp1_alarm
.dev_attr
.attr
,
1076 &sensor_dev_attr_temp1_fault
.dev_attr
.attr
,
1077 &sensor_dev_attr_temp1_max
.dev_attr
.attr
,
1078 &sensor_dev_attr_temp1_min
.dev_attr
.attr
,
1079 &sensor_dev_attr_temp1_offset
.dev_attr
.attr
,
1080 &sensor_dev_attr_temp1_auto_point1_temp
.dev_attr
.attr
,
1081 &sensor_dev_attr_temp1_auto_point2_temp
.dev_attr
.attr
,
1082 &sensor_dev_attr_temp1_crit
.dev_attr
.attr
,
1083 &sensor_dev_attr_temp1_crit_hyst
.dev_attr
.attr
,
1084 &sensor_dev_attr_temp2_input
.dev_attr
.attr
,
1085 &sensor_dev_attr_temp2_alarm
.dev_attr
.attr
,
1086 &sensor_dev_attr_temp2_max
.dev_attr
.attr
,
1087 &sensor_dev_attr_temp2_min
.dev_attr
.attr
,
1088 &sensor_dev_attr_temp2_offset
.dev_attr
.attr
,
1089 &sensor_dev_attr_temp2_auto_point1_temp
.dev_attr
.attr
,
1090 &sensor_dev_attr_temp2_auto_point2_temp
.dev_attr
.attr
,
1091 &sensor_dev_attr_temp2_crit
.dev_attr
.attr
,
1092 &sensor_dev_attr_temp2_crit_hyst
.dev_attr
.attr
,
1093 &sensor_dev_attr_temp3_input
.dev_attr
.attr
,
1094 &sensor_dev_attr_temp3_fault
.dev_attr
.attr
,
1095 &sensor_dev_attr_temp3_alarm
.dev_attr
.attr
,
1096 &sensor_dev_attr_temp3_max
.dev_attr
.attr
,
1097 &sensor_dev_attr_temp3_min
.dev_attr
.attr
,
1098 &sensor_dev_attr_temp3_offset
.dev_attr
.attr
,
1099 &sensor_dev_attr_temp3_auto_point1_temp
.dev_attr
.attr
,
1100 &sensor_dev_attr_temp3_auto_point2_temp
.dev_attr
.attr
,
1101 &sensor_dev_attr_temp3_crit
.dev_attr
.attr
,
1102 &sensor_dev_attr_temp3_crit_hyst
.dev_attr
.attr
,
1103 &sensor_dev_attr_fan1_input
.dev_attr
.attr
,
1104 &sensor_dev_attr_fan1_min
.dev_attr
.attr
,
1105 &sensor_dev_attr_fan1_alarm
.dev_attr
.attr
,
1106 &sensor_dev_attr_fan2_input
.dev_attr
.attr
,
1107 &sensor_dev_attr_fan2_min
.dev_attr
.attr
,
1108 &sensor_dev_attr_fan2_alarm
.dev_attr
.attr
,
1109 &sensor_dev_attr_fan3_input
.dev_attr
.attr
,
1110 &sensor_dev_attr_fan3_min
.dev_attr
.attr
,
1111 &sensor_dev_attr_fan3_alarm
.dev_attr
.attr
,
1112 &sensor_dev_attr_pwm1
.dev_attr
.attr
,
1113 &sensor_dev_attr_pwm1_freq
.dev_attr
.attr
,
1114 &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
,
1115 &sensor_dev_attr_pwm1_auto_channels_temp
.dev_attr
.attr
,
1116 &sensor_dev_attr_pwm1_auto_point1_pwm
.dev_attr
.attr
,
1117 &sensor_dev_attr_pwm1_auto_point2_pwm
.dev_attr
.attr
,
1118 &sensor_dev_attr_pwm3
.dev_attr
.attr
,
1119 &sensor_dev_attr_pwm3_freq
.dev_attr
.attr
,
1120 &sensor_dev_attr_pwm3_enable
.dev_attr
.attr
,
1121 &sensor_dev_attr_pwm3_auto_channels_temp
.dev_attr
.attr
,
1122 &sensor_dev_attr_pwm3_auto_point1_pwm
.dev_attr
.attr
,
1123 &sensor_dev_attr_pwm3_auto_point2_pwm
.dev_attr
.attr
,
1124 &dev_attr_pwm_use_point2_pwm_at_crit
.attr
,
1128 static struct attribute
*fan4_attrs
[] = {
1129 &sensor_dev_attr_fan4_input
.dev_attr
.attr
,
1130 &sensor_dev_attr_fan4_min
.dev_attr
.attr
,
1131 &sensor_dev_attr_fan4_alarm
.dev_attr
.attr
,
1135 static struct attribute
*pwm2_attrs
[] = {
1136 &sensor_dev_attr_pwm2
.dev_attr
.attr
,
1137 &sensor_dev_attr_pwm2_freq
.dev_attr
.attr
,
1138 &sensor_dev_attr_pwm2_enable
.dev_attr
.attr
,
1139 &sensor_dev_attr_pwm2_auto_channels_temp
.dev_attr
.attr
,
1140 &sensor_dev_attr_pwm2_auto_point1_pwm
.dev_attr
.attr
,
1141 &sensor_dev_attr_pwm2_auto_point2_pwm
.dev_attr
.attr
,
1145 static struct attribute
*in0_attrs
[] = {
1146 &sensor_dev_attr_in0_input
.dev_attr
.attr
,
1147 &sensor_dev_attr_in0_max
.dev_attr
.attr
,
1148 &sensor_dev_attr_in0_min
.dev_attr
.attr
,
1149 &sensor_dev_attr_in0_alarm
.dev_attr
.attr
,
1153 static struct attribute
*in3_attrs
[] = {
1154 &sensor_dev_attr_in3_input
.dev_attr
.attr
,
1155 &sensor_dev_attr_in3_max
.dev_attr
.attr
,
1156 &sensor_dev_attr_in3_min
.dev_attr
.attr
,
1157 &sensor_dev_attr_in3_alarm
.dev_attr
.attr
,
1161 static struct attribute
*in4_attrs
[] = {
1162 &sensor_dev_attr_in4_input
.dev_attr
.attr
,
1163 &sensor_dev_attr_in4_max
.dev_attr
.attr
,
1164 &sensor_dev_attr_in4_min
.dev_attr
.attr
,
1165 &sensor_dev_attr_in4_alarm
.dev_attr
.attr
,
1169 static struct attribute
*in5_attrs
[] = {
1170 &sensor_dev_attr_in5_input
.dev_attr
.attr
,
1171 &sensor_dev_attr_in5_max
.dev_attr
.attr
,
1172 &sensor_dev_attr_in5_min
.dev_attr
.attr
,
1173 &sensor_dev_attr_in5_alarm
.dev_attr
.attr
,
1177 static struct attribute
*vid_attrs
[] = {
1178 &dev_attr_cpu0_vid
.attr
,
1183 static struct attribute_group adt7475_attr_group
= { .attrs
= adt7475_attrs
};
1184 static struct attribute_group fan4_attr_group
= { .attrs
= fan4_attrs
};
1185 static struct attribute_group pwm2_attr_group
= { .attrs
= pwm2_attrs
};
1186 static struct attribute_group in0_attr_group
= { .attrs
= in0_attrs
};
1187 static struct attribute_group in3_attr_group
= { .attrs
= in3_attrs
};
1188 static struct attribute_group in4_attr_group
= { .attrs
= in4_attrs
};
1189 static struct attribute_group in5_attr_group
= { .attrs
= in5_attrs
};
1190 static struct attribute_group vid_attr_group
= { .attrs
= vid_attrs
};
1192 static int adt7475_detect(struct i2c_client
*client
,
1193 struct i2c_board_info
*info
)
1195 struct i2c_adapter
*adapter
= client
->adapter
;
1196 int vendid
, devid
, devid2
;
1199 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
1202 vendid
= adt7475_read(REG_VENDID
);
1203 devid2
= adt7475_read(REG_DEVID2
);
1204 if (vendid
!= 0x41 || /* Analog Devices */
1205 (devid2
& 0xf8) != 0x68)
1208 devid
= adt7475_read(REG_DEVID
);
1211 else if (devid
== 0x75 && client
->addr
== 0x2e)
1213 else if (devid
== 0x76)
1215 else if ((devid2
& 0xfc) == 0x6c)
1218 dev_dbg(&adapter
->dev
,
1219 "Couldn't detect an ADT7473/75/76/90 part at "
1220 "0x%02x\n", (unsigned int)client
->addr
);
1224 strlcpy(info
->type
, name
, I2C_NAME_SIZE
);
1229 static void adt7475_remove_files(struct i2c_client
*client
,
1230 struct adt7475_data
*data
)
1232 sysfs_remove_group(&client
->dev
.kobj
, &adt7475_attr_group
);
1234 sysfs_remove_group(&client
->dev
.kobj
, &fan4_attr_group
);
1236 sysfs_remove_group(&client
->dev
.kobj
, &pwm2_attr_group
);
1237 if (data
->has_voltage
& (1 << 0))
1238 sysfs_remove_group(&client
->dev
.kobj
, &in0_attr_group
);
1239 if (data
->has_voltage
& (1 << 3))
1240 sysfs_remove_group(&client
->dev
.kobj
, &in3_attr_group
);
1241 if (data
->has_voltage
& (1 << 4))
1242 sysfs_remove_group(&client
->dev
.kobj
, &in4_attr_group
);
1243 if (data
->has_voltage
& (1 << 5))
1244 sysfs_remove_group(&client
->dev
.kobj
, &in5_attr_group
);
1246 sysfs_remove_group(&client
->dev
.kobj
, &vid_attr_group
);
1249 static int adt7475_probe(struct i2c_client
*client
,
1250 const struct i2c_device_id
*id
)
1252 static const char * const names
[] = {
1253 [adt7473
] = "ADT7473",
1254 [adt7475
] = "ADT7475",
1255 [adt7476
] = "ADT7476",
1256 [adt7490
] = "ADT7490",
1259 struct adt7475_data
*data
;
1260 int i
, ret
= 0, revision
;
1261 u8 config2
, config3
;
1263 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
1267 mutex_init(&data
->lock
);
1268 i2c_set_clientdata(client
, data
);
1270 /* Initialize device-specific values */
1271 switch (id
->driver_data
) {
1273 data
->has_voltage
= 0x0e; /* in1 to in3 */
1274 revision
= adt7475_read(REG_DEVID2
) & 0x07;
1277 data
->has_voltage
= 0x3e; /* in1 to in5 */
1278 revision
= adt7475_read(REG_DEVID2
) & 0x03;
1279 if (revision
== 0x03)
1280 revision
+= adt7475_read(REG_DEVREV2
);
1283 data
->has_voltage
= 0x06; /* in1, in2 */
1284 revision
= adt7475_read(REG_DEVID2
) & 0x07;
1287 config3
= adt7475_read(REG_CONFIG3
);
1288 /* Pin PWM2 may alternatively be used for ALERT output */
1289 if (!(config3
& CONFIG3_SMBALERT
))
1291 /* Meaning of this bit is inverted for the ADT7473-1 */
1292 if (id
->driver_data
== adt7473
&& revision
>= 1)
1293 data
->has_pwm2
= !data
->has_pwm2
;
1295 data
->config4
= adt7475_read(REG_CONFIG4
);
1296 /* Pin TACH4 may alternatively be used for THERM */
1297 if ((data
->config4
& CONFIG4_PINFUNC
) == 0x0)
1301 * THERM configuration is more complex on the ADT7476 and ADT7490,
1302 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1305 if (id
->driver_data
== adt7490
) {
1306 if ((data
->config4
& CONFIG4_PINFUNC
) == 0x1 &&
1307 !(config3
& CONFIG3_THERM
))
1310 if (id
->driver_data
== adt7476
|| id
->driver_data
== adt7490
) {
1311 if (!(config3
& CONFIG3_THERM
) ||
1312 (data
->config4
& CONFIG4_PINFUNC
) == 0x1)
1313 data
->has_voltage
|= (1 << 0); /* in0 */
1317 * On the ADT7476, the +12V input pin may instead be used as VID5,
1318 * and VID pins may alternatively be used as GPIO
1320 if (id
->driver_data
== adt7476
) {
1321 u8 vid
= adt7475_read(REG_VID
);
1322 if (!(vid
& VID_VIDSEL
))
1323 data
->has_voltage
|= (1 << 4); /* in4 */
1325 data
->has_vid
= !(adt7475_read(REG_CONFIG5
) & CONFIG5_VIDGPIO
);
1328 /* Voltage attenuators can be bypassed, globally or individually */
1329 config2
= adt7475_read(REG_CONFIG2
);
1330 if (config2
& CONFIG2_ATTN
) {
1331 data
->bypass_attn
= (0x3 << 3) | 0x3;
1333 data
->bypass_attn
= ((data
->config4
& CONFIG4_ATTN_IN10
) >> 4) |
1334 ((data
->config4
& CONFIG4_ATTN_IN43
) >> 3);
1336 data
->bypass_attn
&= data
->has_voltage
;
1339 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1340 * pwm's which are disabled to manual mode with 0% duty cycle
1342 for (i
= 0; i
< ADT7475_PWM_COUNT
; i
++)
1343 adt7475_read_pwm(client
, i
);
1345 ret
= sysfs_create_group(&client
->dev
.kobj
, &adt7475_attr_group
);
1349 /* Features that can be disabled individually */
1350 if (data
->has_fan4
) {
1351 ret
= sysfs_create_group(&client
->dev
.kobj
, &fan4_attr_group
);
1355 if (data
->has_pwm2
) {
1356 ret
= sysfs_create_group(&client
->dev
.kobj
, &pwm2_attr_group
);
1360 if (data
->has_voltage
& (1 << 0)) {
1361 ret
= sysfs_create_group(&client
->dev
.kobj
, &in0_attr_group
);
1365 if (data
->has_voltage
& (1 << 3)) {
1366 ret
= sysfs_create_group(&client
->dev
.kobj
, &in3_attr_group
);
1370 if (data
->has_voltage
& (1 << 4)) {
1371 ret
= sysfs_create_group(&client
->dev
.kobj
, &in4_attr_group
);
1375 if (data
->has_voltage
& (1 << 5)) {
1376 ret
= sysfs_create_group(&client
->dev
.kobj
, &in5_attr_group
);
1380 if (data
->has_vid
) {
1381 data
->vrm
= vid_which_vrm();
1382 ret
= sysfs_create_group(&client
->dev
.kobj
, &vid_attr_group
);
1387 data
->hwmon_dev
= hwmon_device_register(&client
->dev
);
1388 if (IS_ERR(data
->hwmon_dev
)) {
1389 ret
= PTR_ERR(data
->hwmon_dev
);
1393 dev_info(&client
->dev
, "%s device, revision %d\n",
1394 names
[id
->driver_data
], revision
);
1395 if ((data
->has_voltage
& 0x11) || data
->has_fan4
|| data
->has_pwm2
)
1396 dev_info(&client
->dev
, "Optional features:%s%s%s%s%s\n",
1397 (data
->has_voltage
& (1 << 0)) ? " in0" : "",
1398 (data
->has_voltage
& (1 << 4)) ? " in4" : "",
1399 data
->has_fan4
? " fan4" : "",
1400 data
->has_pwm2
? " pwm2" : "",
1401 data
->has_vid
? " vid" : "");
1402 if (data
->bypass_attn
)
1403 dev_info(&client
->dev
, "Bypassing attenuators on:%s%s%s%s\n",
1404 (data
->bypass_attn
& (1 << 0)) ? " in0" : "",
1405 (data
->bypass_attn
& (1 << 1)) ? " in1" : "",
1406 (data
->bypass_attn
& (1 << 3)) ? " in3" : "",
1407 (data
->bypass_attn
& (1 << 4)) ? " in4" : "");
1412 adt7475_remove_files(client
, data
);
1418 static int adt7475_remove(struct i2c_client
*client
)
1420 struct adt7475_data
*data
= i2c_get_clientdata(client
);
1422 hwmon_device_unregister(data
->hwmon_dev
);
1423 adt7475_remove_files(client
, data
);
1429 static struct i2c_driver adt7475_driver
= {
1430 .class = I2C_CLASS_HWMON
,
1434 .probe
= adt7475_probe
,
1435 .remove
= adt7475_remove
,
1436 .id_table
= adt7475_id
,
1437 .detect
= adt7475_detect
,
1438 .address_list
= normal_i2c
,
1441 static void adt7475_read_hystersis(struct i2c_client
*client
)
1443 struct adt7475_data
*data
= i2c_get_clientdata(client
);
1445 data
->temp
[HYSTERSIS
][0] = (u16
) adt7475_read(REG_REMOTE1_HYSTERSIS
);
1446 data
->temp
[HYSTERSIS
][1] = data
->temp
[HYSTERSIS
][0];
1447 data
->temp
[HYSTERSIS
][2] = (u16
) adt7475_read(REG_REMOTE2_HYSTERSIS
);
1450 static void adt7475_read_pwm(struct i2c_client
*client
, int index
)
1452 struct adt7475_data
*data
= i2c_get_clientdata(client
);
1455 data
->pwm
[CONTROL
][index
] = adt7475_read(PWM_CONFIG_REG(index
));
1458 * Figure out the internal value for pwmctrl and pwmchan
1459 * based on the current settings
1461 v
= (data
->pwm
[CONTROL
][index
] >> 5) & 7;
1464 data
->pwmctl
[index
] = 0;
1466 data
->pwmctl
[index
] = 1;
1469 * The fan is disabled - we don't want to
1470 * support that, so change to manual mode and
1471 * set the duty cycle to 0 instead
1473 data
->pwm
[INPUT
][index
] = 0;
1474 data
->pwm
[CONTROL
][index
] &= ~0xE0;
1475 data
->pwm
[CONTROL
][index
] |= (7 << 5);
1477 i2c_smbus_write_byte_data(client
, PWM_CONFIG_REG(index
),
1478 data
->pwm
[INPUT
][index
]);
1480 i2c_smbus_write_byte_data(client
, PWM_CONFIG_REG(index
),
1481 data
->pwm
[CONTROL
][index
]);
1483 data
->pwmctl
[index
] = 1;
1485 data
->pwmctl
[index
] = 2;
1489 data
->pwmchan
[index
] = 1;
1492 data
->pwmchan
[index
] = 2;
1495 data
->pwmchan
[index
] = 4;
1498 data
->pwmchan
[index
] = 6;
1501 data
->pwmchan
[index
] = 7;
1507 static struct adt7475_data
*adt7475_update_device(struct device
*dev
)
1509 struct i2c_client
*client
= to_i2c_client(dev
);
1510 struct adt7475_data
*data
= i2c_get_clientdata(client
);
1514 mutex_lock(&data
->lock
);
1516 /* Measurement values update every 2 seconds */
1517 if (time_after(jiffies
, data
->measure_updated
+ HZ
* 2) ||
1519 data
->alarms
= adt7475_read(REG_STATUS2
) << 8;
1520 data
->alarms
|= adt7475_read(REG_STATUS1
);
1522 ext
= (adt7475_read(REG_EXTEND2
) << 8) |
1523 adt7475_read(REG_EXTEND1
);
1524 for (i
= 0; i
< ADT7475_VOLTAGE_COUNT
; i
++) {
1525 if (!(data
->has_voltage
& (1 << i
)))
1527 data
->voltage
[INPUT
][i
] =
1528 (adt7475_read(VOLTAGE_REG(i
)) << 2) |
1529 ((ext
>> (i
* 2)) & 3);
1532 for (i
= 0; i
< ADT7475_TEMP_COUNT
; i
++)
1533 data
->temp
[INPUT
][i
] =
1534 (adt7475_read(TEMP_REG(i
)) << 2) |
1535 ((ext
>> ((i
+ 5) * 2)) & 3);
1537 if (data
->has_voltage
& (1 << 5)) {
1538 data
->alarms
|= adt7475_read(REG_STATUS4
) << 24;
1539 ext
= adt7475_read(REG_EXTEND3
);
1540 data
->voltage
[INPUT
][5] = adt7475_read(REG_VTT
) << 2 |
1544 for (i
= 0; i
< ADT7475_TACH_COUNT
; i
++) {
1545 if (i
== 3 && !data
->has_fan4
)
1547 data
->tach
[INPUT
][i
] =
1548 adt7475_read_word(client
, TACH_REG(i
));
1551 /* Updated by hw when in auto mode */
1552 for (i
= 0; i
< ADT7475_PWM_COUNT
; i
++) {
1553 if (i
== 1 && !data
->has_pwm2
)
1555 data
->pwm
[INPUT
][i
] = adt7475_read(PWM_REG(i
));
1559 data
->vid
= adt7475_read(REG_VID
) & 0x3f;
1561 data
->measure_updated
= jiffies
;
1564 /* Limits and settings, should never change update every 60 seconds */
1565 if (time_after(jiffies
, data
->limits_updated
+ HZ
* 60) ||
1567 data
->config4
= adt7475_read(REG_CONFIG4
);
1568 data
->config5
= adt7475_read(REG_CONFIG5
);
1570 for (i
= 0; i
< ADT7475_VOLTAGE_COUNT
; i
++) {
1571 if (!(data
->has_voltage
& (1 << i
)))
1573 /* Adjust values so they match the input precision */
1574 data
->voltage
[MIN
][i
] =
1575 adt7475_read(VOLTAGE_MIN_REG(i
)) << 2;
1576 data
->voltage
[MAX
][i
] =
1577 adt7475_read(VOLTAGE_MAX_REG(i
)) << 2;
1580 if (data
->has_voltage
& (1 << 5)) {
1581 data
->voltage
[MIN
][5] = adt7475_read(REG_VTT_MIN
) << 2;
1582 data
->voltage
[MAX
][5] = adt7475_read(REG_VTT_MAX
) << 2;
1585 for (i
= 0; i
< ADT7475_TEMP_COUNT
; i
++) {
1586 /* Adjust values so they match the input precision */
1587 data
->temp
[MIN
][i
] =
1588 adt7475_read(TEMP_MIN_REG(i
)) << 2;
1589 data
->temp
[MAX
][i
] =
1590 adt7475_read(TEMP_MAX_REG(i
)) << 2;
1591 data
->temp
[AUTOMIN
][i
] =
1592 adt7475_read(TEMP_TMIN_REG(i
)) << 2;
1593 data
->temp
[THERM
][i
] =
1594 adt7475_read(TEMP_THERM_REG(i
)) << 2;
1595 data
->temp
[OFFSET
][i
] =
1596 adt7475_read(TEMP_OFFSET_REG(i
));
1598 adt7475_read_hystersis(client
);
1600 for (i
= 0; i
< ADT7475_TACH_COUNT
; i
++) {
1601 if (i
== 3 && !data
->has_fan4
)
1603 data
->tach
[MIN
][i
] =
1604 adt7475_read_word(client
, TACH_MIN_REG(i
));
1607 for (i
= 0; i
< ADT7475_PWM_COUNT
; i
++) {
1608 if (i
== 1 && !data
->has_pwm2
)
1610 data
->pwm
[MAX
][i
] = adt7475_read(PWM_MAX_REG(i
));
1611 data
->pwm
[MIN
][i
] = adt7475_read(PWM_MIN_REG(i
));
1612 /* Set the channel and control information */
1613 adt7475_read_pwm(client
, i
);
1616 data
->range
[0] = adt7475_read(TEMP_TRANGE_REG(0));
1617 data
->range
[1] = adt7475_read(TEMP_TRANGE_REG(1));
1618 data
->range
[2] = adt7475_read(TEMP_TRANGE_REG(2));
1620 data
->limits_updated
= jiffies
;
1624 mutex_unlock(&data
->lock
);
1629 module_i2c_driver(adt7475_driver
);
1631 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1632 MODULE_DESCRIPTION("adt7475 driver");
1633 MODULE_LICENSE("GPL");