2 * A hwmon driver for the Analog Devices ADT7470
3 * Copyright (C) 2007 IBM
5 * Author: Darrick J. Wong <djwong@us.ibm.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24 #include <linux/module.h>
25 #include <linux/jiffies.h>
26 #include <linux/i2c.h>
27 #include <linux/hwmon.h>
28 #include <linux/hwmon-sysfs.h>
29 #include <linux/err.h>
30 #include <linux/mutex.h>
31 #include <linux/delay.h>
32 #include <linux/log2.h>
33 #include <linux/kthread.h>
34 #include <linux/slab.h>
36 /* Addresses to scan */
37 static const unsigned short normal_i2c
[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END
};
39 /* ADT7470 registers */
40 #define ADT7470_REG_BASE_ADDR 0x20
41 #define ADT7470_REG_TEMP_BASE_ADDR 0x20
42 #define ADT7470_REG_TEMP_MAX_ADDR 0x29
43 #define ADT7470_REG_FAN_BASE_ADDR 0x2A
44 #define ADT7470_REG_FAN_MAX_ADDR 0x31
45 #define ADT7470_REG_PWM_BASE_ADDR 0x32
46 #define ADT7470_REG_PWM_MAX_ADDR 0x35
47 #define ADT7470_REG_PWM_MAX_BASE_ADDR 0x38
48 #define ADT7470_REG_PWM_MAX_MAX_ADDR 0x3B
49 #define ADT7470_REG_CFG 0x40
50 #define ADT7470_FSPD_MASK 0x04
51 #define ADT7470_REG_ALARM1 0x41
52 #define ADT7470_R1T_ALARM 0x01
53 #define ADT7470_R2T_ALARM 0x02
54 #define ADT7470_R3T_ALARM 0x04
55 #define ADT7470_R4T_ALARM 0x08
56 #define ADT7470_R5T_ALARM 0x10
57 #define ADT7470_R6T_ALARM 0x20
58 #define ADT7470_R7T_ALARM 0x40
59 #define ADT7470_OOL_ALARM 0x80
60 #define ADT7470_REG_ALARM2 0x42
61 #define ADT7470_R8T_ALARM 0x01
62 #define ADT7470_R9T_ALARM 0x02
63 #define ADT7470_R10T_ALARM 0x04
64 #define ADT7470_FAN1_ALARM 0x10
65 #define ADT7470_FAN2_ALARM 0x20
66 #define ADT7470_FAN3_ALARM 0x40
67 #define ADT7470_FAN4_ALARM 0x80
68 #define ADT7470_REG_TEMP_LIMITS_BASE_ADDR 0x44
69 #define ADT7470_REG_TEMP_LIMITS_MAX_ADDR 0x57
70 #define ADT7470_REG_FAN_MIN_BASE_ADDR 0x58
71 #define ADT7470_REG_FAN_MIN_MAX_ADDR 0x5F
72 #define ADT7470_REG_FAN_MAX_BASE_ADDR 0x60
73 #define ADT7470_REG_FAN_MAX_MAX_ADDR 0x67
74 #define ADT7470_REG_PWM_CFG_BASE_ADDR 0x68
75 #define ADT7470_REG_PWM12_CFG 0x68
76 #define ADT7470_PWM2_AUTO_MASK 0x40
77 #define ADT7470_PWM1_AUTO_MASK 0x80
78 #define ADT7470_PWM_AUTO_MASK 0xC0
79 #define ADT7470_REG_PWM34_CFG 0x69
80 #define ADT7470_PWM3_AUTO_MASK 0x40
81 #define ADT7470_PWM4_AUTO_MASK 0x80
82 #define ADT7470_REG_PWM_MIN_BASE_ADDR 0x6A
83 #define ADT7470_REG_PWM_MIN_MAX_ADDR 0x6D
84 #define ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR 0x6E
85 #define ADT7470_REG_PWM_TEMP_MIN_MAX_ADDR 0x71
86 #define ADT7470_REG_ACOUSTICS12 0x75
87 #define ADT7470_REG_ACOUSTICS34 0x76
88 #define ADT7470_REG_DEVICE 0x3D
89 #define ADT7470_REG_VENDOR 0x3E
90 #define ADT7470_REG_REVISION 0x3F
91 #define ADT7470_REG_ALARM1_MASK 0x72
92 #define ADT7470_REG_ALARM2_MASK 0x73
93 #define ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR 0x7C
94 #define ADT7470_REG_PWM_AUTO_TEMP_MAX_ADDR 0x7D
95 #define ADT7470_REG_MAX_ADDR 0x81
97 #define ADT7470_TEMP_COUNT 10
98 #define ADT7470_TEMP_REG(x) (ADT7470_REG_TEMP_BASE_ADDR + (x))
99 #define ADT7470_TEMP_MIN_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + ((x) * 2))
100 #define ADT7470_TEMP_MAX_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + \
103 #define ADT7470_FAN_COUNT 4
104 #define ADT7470_REG_FAN(x) (ADT7470_REG_FAN_BASE_ADDR + ((x) * 2))
105 #define ADT7470_REG_FAN_MIN(x) (ADT7470_REG_FAN_MIN_BASE_ADDR + ((x) * 2))
106 #define ADT7470_REG_FAN_MAX(x) (ADT7470_REG_FAN_MAX_BASE_ADDR + ((x) * 2))
108 #define ADT7470_PWM_COUNT 4
109 #define ADT7470_REG_PWM(x) (ADT7470_REG_PWM_BASE_ADDR + (x))
110 #define ADT7470_REG_PWM_MAX(x) (ADT7470_REG_PWM_MAX_BASE_ADDR + (x))
111 #define ADT7470_REG_PWM_MIN(x) (ADT7470_REG_PWM_MIN_BASE_ADDR + (x))
112 #define ADT7470_REG_PWM_TMIN(x) (ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR + (x))
113 #define ADT7470_REG_PWM_CFG(x) (ADT7470_REG_PWM_CFG_BASE_ADDR + ((x) / 2))
114 #define ADT7470_REG_PWM_AUTO_TEMP(x) (ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR + \
117 #define ALARM2(x) ((x) << 8)
119 #define ADT7470_VENDOR 0x41
120 #define ADT7470_DEVICE 0x70
121 /* datasheet only mentions a revision 2 */
122 #define ADT7470_REVISION 0x02
124 /* "all temps" according to hwmon sysfs interface spec */
125 #define ADT7470_PWM_ALL_TEMPS 0x3FF
127 /* How often do we reread sensors values? (In jiffies) */
128 #define SENSOR_REFRESH_INTERVAL (5 * HZ)
130 /* How often do we reread sensor limit values? (In jiffies) */
131 #define LIMIT_REFRESH_INTERVAL (60 * HZ)
133 /* Wait at least 200ms per sensor for 10 sensors */
134 #define TEMP_COLLECTION_TIME 2000
136 /* auto update thing won't fire more than every 2s */
137 #define AUTO_UPDATE_INTERVAL 2000
139 /* datasheet says to divide this number by the fan reading to get fan rpm */
140 #define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
141 #define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM
142 #define FAN_PERIOD_INVALID 65535
143 #define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
145 struct adt7470_data
{
146 struct device
*hwmon_dev
;
147 struct attribute_group attrs
;
151 unsigned long sensors_last_updated
; /* In jiffies */
152 unsigned long limits_last_updated
; /* In jiffies */
154 int num_temp_sensors
; /* -1 = probe */
155 int temperatures_probed
;
157 s8 temp
[ADT7470_TEMP_COUNT
];
158 s8 temp_min
[ADT7470_TEMP_COUNT
];
159 s8 temp_max
[ADT7470_TEMP_COUNT
];
160 u16 fan
[ADT7470_FAN_COUNT
];
161 u16 fan_min
[ADT7470_FAN_COUNT
];
162 u16 fan_max
[ADT7470_FAN_COUNT
];
166 u8 pwm
[ADT7470_PWM_COUNT
];
167 u8 pwm_max
[ADT7470_PWM_COUNT
];
168 u8 pwm_automatic
[ADT7470_PWM_COUNT
];
169 u8 pwm_min
[ADT7470_PWM_COUNT
];
170 s8 pwm_tmin
[ADT7470_PWM_COUNT
];
171 u8 pwm_auto_temp
[ADT7470_PWM_COUNT
];
173 struct task_struct
*auto_update
;
174 struct completion auto_update_stop
;
175 unsigned int auto_update_interval
;
178 static int adt7470_probe(struct i2c_client
*client
,
179 const struct i2c_device_id
*id
);
180 static int adt7470_detect(struct i2c_client
*client
,
181 struct i2c_board_info
*info
);
182 static int adt7470_remove(struct i2c_client
*client
);
184 static const struct i2c_device_id adt7470_id
[] = {
188 MODULE_DEVICE_TABLE(i2c
, adt7470_id
);
190 static struct i2c_driver adt7470_driver
= {
191 .class = I2C_CLASS_HWMON
,
195 .probe
= adt7470_probe
,
196 .remove
= adt7470_remove
,
197 .id_table
= adt7470_id
,
198 .detect
= adt7470_detect
,
199 .address_list
= normal_i2c
,
203 * 16-bit registers on the ADT7470 are low-byte first. The data sheet says
204 * that the low byte must be read before the high byte.
206 static inline int adt7470_read_word_data(struct i2c_client
*client
, u8 reg
)
209 foo
= i2c_smbus_read_byte_data(client
, reg
);
210 foo
|= ((u16
)i2c_smbus_read_byte_data(client
, reg
+ 1) << 8);
214 static inline int adt7470_write_word_data(struct i2c_client
*client
, u8 reg
,
217 return i2c_smbus_write_byte_data(client
, reg
, value
& 0xFF)
218 && i2c_smbus_write_byte_data(client
, reg
+ 1, value
>> 8);
221 static void adt7470_init_client(struct i2c_client
*client
)
223 int reg
= i2c_smbus_read_byte_data(client
, ADT7470_REG_CFG
);
226 dev_err(&client
->dev
, "cannot read configuration register\n");
228 /* start monitoring (and do a self-test) */
229 i2c_smbus_write_byte_data(client
, ADT7470_REG_CFG
, reg
| 3);
233 /* Probe for temperature sensors. Assumes lock is held */
234 static int adt7470_read_temperatures(struct i2c_client
*client
,
235 struct adt7470_data
*data
)
239 u8 cfg
, pwm
[4], pwm_cfg
[2];
241 /* save pwm[1-4] config register */
242 pwm_cfg
[0] = i2c_smbus_read_byte_data(client
, ADT7470_REG_PWM_CFG(0));
243 pwm_cfg
[1] = i2c_smbus_read_byte_data(client
, ADT7470_REG_PWM_CFG(2));
245 /* set manual pwm to whatever it is set to now */
246 for (i
= 0; i
< ADT7470_FAN_COUNT
; i
++)
247 pwm
[i
] = i2c_smbus_read_byte_data(client
, ADT7470_REG_PWM(i
));
249 /* put pwm in manual mode */
250 i2c_smbus_write_byte_data(client
, ADT7470_REG_PWM_CFG(0),
251 pwm_cfg
[0] & ~(ADT7470_PWM_AUTO_MASK
));
252 i2c_smbus_write_byte_data(client
, ADT7470_REG_PWM_CFG(2),
253 pwm_cfg
[1] & ~(ADT7470_PWM_AUTO_MASK
));
255 /* write pwm control to whatever it was */
256 for (i
= 0; i
< ADT7470_FAN_COUNT
; i
++)
257 i2c_smbus_write_byte_data(client
, ADT7470_REG_PWM(i
), pwm
[i
]);
259 /* start reading temperature sensors */
260 cfg
= i2c_smbus_read_byte_data(client
, ADT7470_REG_CFG
);
262 i2c_smbus_write_byte_data(client
, ADT7470_REG_CFG
, cfg
);
264 /* Delay is 200ms * number of temp sensors. */
265 res
= msleep_interruptible((data
->num_temp_sensors
>= 0 ?
266 data
->num_temp_sensors
* 200 :
267 TEMP_COLLECTION_TIME
));
269 /* done reading temperature sensors */
270 cfg
= i2c_smbus_read_byte_data(client
, ADT7470_REG_CFG
);
272 i2c_smbus_write_byte_data(client
, ADT7470_REG_CFG
, cfg
);
274 /* restore pwm[1-4] config registers */
275 i2c_smbus_write_byte_data(client
, ADT7470_REG_PWM_CFG(0), pwm_cfg
[0]);
276 i2c_smbus_write_byte_data(client
, ADT7470_REG_PWM_CFG(2), pwm_cfg
[1]);
279 pr_err("ha ha, interrupted\n");
283 /* Only count fans if we have to */
284 if (data
->num_temp_sensors
>= 0)
287 for (i
= 0; i
< ADT7470_TEMP_COUNT
; i
++) {
288 data
->temp
[i
] = i2c_smbus_read_byte_data(client
,
289 ADT7470_TEMP_REG(i
));
291 data
->num_temp_sensors
= i
+ 1;
293 data
->temperatures_probed
= 1;
297 static int adt7470_update_thread(void *p
)
299 struct i2c_client
*client
= p
;
300 struct adt7470_data
*data
= i2c_get_clientdata(client
);
302 while (!kthread_should_stop()) {
303 mutex_lock(&data
->lock
);
304 adt7470_read_temperatures(client
, data
);
305 mutex_unlock(&data
->lock
);
306 if (kthread_should_stop())
308 msleep_interruptible(data
->auto_update_interval
);
311 complete_all(&data
->auto_update_stop
);
315 static struct adt7470_data
*adt7470_update_device(struct device
*dev
)
317 struct i2c_client
*client
= to_i2c_client(dev
);
318 struct adt7470_data
*data
= i2c_get_clientdata(client
);
319 unsigned long local_jiffies
= jiffies
;
322 int need_sensors
= 1;
326 * Figure out if we need to update the shadow registers.
327 * Lockless means that we may occasionally report out of
330 if (time_before(local_jiffies
, data
->sensors_last_updated
+
331 SENSOR_REFRESH_INTERVAL
) &&
335 if (time_before(local_jiffies
, data
->limits_last_updated
+
336 LIMIT_REFRESH_INTERVAL
) &&
340 if (!need_sensors
&& !need_limits
)
343 mutex_lock(&data
->lock
);
345 goto no_sensor_update
;
347 if (!data
->temperatures_probed
)
348 adt7470_read_temperatures(client
, data
);
350 for (i
= 0; i
< ADT7470_TEMP_COUNT
; i
++)
351 data
->temp
[i
] = i2c_smbus_read_byte_data(client
,
352 ADT7470_TEMP_REG(i
));
354 for (i
= 0; i
< ADT7470_FAN_COUNT
; i
++)
355 data
->fan
[i
] = adt7470_read_word_data(client
,
358 for (i
= 0; i
< ADT7470_PWM_COUNT
; i
++) {
362 data
->pwm
[i
] = i2c_smbus_read_byte_data(client
,
366 reg_mask
= ADT7470_PWM2_AUTO_MASK
;
368 reg_mask
= ADT7470_PWM1_AUTO_MASK
;
370 reg
= ADT7470_REG_PWM_CFG(i
);
371 if (i2c_smbus_read_byte_data(client
, reg
) & reg_mask
)
372 data
->pwm_automatic
[i
] = 1;
374 data
->pwm_automatic
[i
] = 0;
376 reg
= ADT7470_REG_PWM_AUTO_TEMP(i
);
377 cfg
= i2c_smbus_read_byte_data(client
, reg
);
379 data
->pwm_auto_temp
[i
] = cfg
>> 4;
381 data
->pwm_auto_temp
[i
] = cfg
& 0xF;
384 if (i2c_smbus_read_byte_data(client
, ADT7470_REG_CFG
) &
386 data
->force_pwm_max
= 1;
388 data
->force_pwm_max
= 0;
390 data
->alarm
= i2c_smbus_read_byte_data(client
, ADT7470_REG_ALARM1
);
391 if (data
->alarm
& ADT7470_OOL_ALARM
)
392 data
->alarm
|= ALARM2(i2c_smbus_read_byte_data(client
,
393 ADT7470_REG_ALARM2
));
394 data
->alarms_mask
= adt7470_read_word_data(client
,
395 ADT7470_REG_ALARM1_MASK
);
397 data
->sensors_last_updated
= local_jiffies
;
398 data
->sensors_valid
= 1;
404 for (i
= 0; i
< ADT7470_TEMP_COUNT
; i
++) {
405 data
->temp_min
[i
] = i2c_smbus_read_byte_data(client
,
406 ADT7470_TEMP_MIN_REG(i
));
407 data
->temp_max
[i
] = i2c_smbus_read_byte_data(client
,
408 ADT7470_TEMP_MAX_REG(i
));
411 for (i
= 0; i
< ADT7470_FAN_COUNT
; i
++) {
412 data
->fan_min
[i
] = adt7470_read_word_data(client
,
413 ADT7470_REG_FAN_MIN(i
));
414 data
->fan_max
[i
] = adt7470_read_word_data(client
,
415 ADT7470_REG_FAN_MAX(i
));
418 for (i
= 0; i
< ADT7470_PWM_COUNT
; i
++) {
419 data
->pwm_max
[i
] = i2c_smbus_read_byte_data(client
,
420 ADT7470_REG_PWM_MAX(i
));
421 data
->pwm_min
[i
] = i2c_smbus_read_byte_data(client
,
422 ADT7470_REG_PWM_MIN(i
));
423 data
->pwm_tmin
[i
] = i2c_smbus_read_byte_data(client
,
424 ADT7470_REG_PWM_TMIN(i
));
427 data
->limits_last_updated
= local_jiffies
;
428 data
->limits_valid
= 1;
431 mutex_unlock(&data
->lock
);
435 static ssize_t
show_auto_update_interval(struct device
*dev
,
436 struct device_attribute
*devattr
,
439 struct adt7470_data
*data
= adt7470_update_device(dev
);
440 return sprintf(buf
, "%d\n", data
->auto_update_interval
);
443 static ssize_t
set_auto_update_interval(struct device
*dev
,
444 struct device_attribute
*devattr
,
448 struct i2c_client
*client
= to_i2c_client(dev
);
449 struct adt7470_data
*data
= i2c_get_clientdata(client
);
452 if (strict_strtol(buf
, 10, &temp
))
455 temp
= SENSORS_LIMIT(temp
, 0, 60000);
457 mutex_lock(&data
->lock
);
458 data
->auto_update_interval
= temp
;
459 mutex_unlock(&data
->lock
);
464 static ssize_t
show_num_temp_sensors(struct device
*dev
,
465 struct device_attribute
*devattr
,
468 struct adt7470_data
*data
= adt7470_update_device(dev
);
469 return sprintf(buf
, "%d\n", data
->num_temp_sensors
);
472 static ssize_t
set_num_temp_sensors(struct device
*dev
,
473 struct device_attribute
*devattr
,
477 struct i2c_client
*client
= to_i2c_client(dev
);
478 struct adt7470_data
*data
= i2c_get_clientdata(client
);
481 if (strict_strtol(buf
, 10, &temp
))
484 temp
= SENSORS_LIMIT(temp
, -1, 10);
486 mutex_lock(&data
->lock
);
487 data
->num_temp_sensors
= temp
;
489 data
->temperatures_probed
= 0;
490 mutex_unlock(&data
->lock
);
495 static ssize_t
show_temp_min(struct device
*dev
,
496 struct device_attribute
*devattr
,
499 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
500 struct adt7470_data
*data
= adt7470_update_device(dev
);
501 return sprintf(buf
, "%d\n", 1000 * data
->temp_min
[attr
->index
]);
504 static ssize_t
set_temp_min(struct device
*dev
,
505 struct device_attribute
*devattr
,
509 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
510 struct i2c_client
*client
= to_i2c_client(dev
);
511 struct adt7470_data
*data
= i2c_get_clientdata(client
);
514 if (strict_strtol(buf
, 10, &temp
))
517 temp
= DIV_ROUND_CLOSEST(temp
, 1000);
518 temp
= SENSORS_LIMIT(temp
, 0, 255);
520 mutex_lock(&data
->lock
);
521 data
->temp_min
[attr
->index
] = temp
;
522 i2c_smbus_write_byte_data(client
, ADT7470_TEMP_MIN_REG(attr
->index
),
524 mutex_unlock(&data
->lock
);
529 static ssize_t
show_temp_max(struct device
*dev
,
530 struct device_attribute
*devattr
,
533 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
534 struct adt7470_data
*data
= adt7470_update_device(dev
);
535 return sprintf(buf
, "%d\n", 1000 * data
->temp_max
[attr
->index
]);
538 static ssize_t
set_temp_max(struct device
*dev
,
539 struct device_attribute
*devattr
,
543 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
544 struct i2c_client
*client
= to_i2c_client(dev
);
545 struct adt7470_data
*data
= i2c_get_clientdata(client
);
548 if (strict_strtol(buf
, 10, &temp
))
551 temp
= DIV_ROUND_CLOSEST(temp
, 1000);
552 temp
= SENSORS_LIMIT(temp
, 0, 255);
554 mutex_lock(&data
->lock
);
555 data
->temp_max
[attr
->index
] = temp
;
556 i2c_smbus_write_byte_data(client
, ADT7470_TEMP_MAX_REG(attr
->index
),
558 mutex_unlock(&data
->lock
);
563 static ssize_t
show_temp(struct device
*dev
, struct device_attribute
*devattr
,
566 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
567 struct adt7470_data
*data
= adt7470_update_device(dev
);
568 return sprintf(buf
, "%d\n", 1000 * data
->temp
[attr
->index
]);
571 static ssize_t
show_alarm_mask(struct device
*dev
,
572 struct device_attribute
*devattr
,
575 struct adt7470_data
*data
= adt7470_update_device(dev
);
577 return sprintf(buf
, "%x\n", data
->alarms_mask
);
580 static ssize_t
show_fan_max(struct device
*dev
,
581 struct device_attribute
*devattr
,
584 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
585 struct adt7470_data
*data
= adt7470_update_device(dev
);
587 if (FAN_DATA_VALID(data
->fan_max
[attr
->index
]))
588 return sprintf(buf
, "%d\n",
589 FAN_PERIOD_TO_RPM(data
->fan_max
[attr
->index
]));
591 return sprintf(buf
, "0\n");
594 static ssize_t
set_fan_max(struct device
*dev
,
595 struct device_attribute
*devattr
,
596 const char *buf
, size_t count
)
598 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
599 struct i2c_client
*client
= to_i2c_client(dev
);
600 struct adt7470_data
*data
= i2c_get_clientdata(client
);
603 if (strict_strtol(buf
, 10, &temp
) || !temp
)
606 temp
= FAN_RPM_TO_PERIOD(temp
);
607 temp
= SENSORS_LIMIT(temp
, 1, 65534);
609 mutex_lock(&data
->lock
);
610 data
->fan_max
[attr
->index
] = temp
;
611 adt7470_write_word_data(client
, ADT7470_REG_FAN_MAX(attr
->index
), temp
);
612 mutex_unlock(&data
->lock
);
617 static ssize_t
show_fan_min(struct device
*dev
,
618 struct device_attribute
*devattr
,
621 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
622 struct adt7470_data
*data
= adt7470_update_device(dev
);
624 if (FAN_DATA_VALID(data
->fan_min
[attr
->index
]))
625 return sprintf(buf
, "%d\n",
626 FAN_PERIOD_TO_RPM(data
->fan_min
[attr
->index
]));
628 return sprintf(buf
, "0\n");
631 static ssize_t
set_fan_min(struct device
*dev
,
632 struct device_attribute
*devattr
,
633 const char *buf
, size_t count
)
635 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
636 struct i2c_client
*client
= to_i2c_client(dev
);
637 struct adt7470_data
*data
= i2c_get_clientdata(client
);
640 if (strict_strtol(buf
, 10, &temp
) || !temp
)
643 temp
= FAN_RPM_TO_PERIOD(temp
);
644 temp
= SENSORS_LIMIT(temp
, 1, 65534);
646 mutex_lock(&data
->lock
);
647 data
->fan_min
[attr
->index
] = temp
;
648 adt7470_write_word_data(client
, ADT7470_REG_FAN_MIN(attr
->index
), temp
);
649 mutex_unlock(&data
->lock
);
654 static ssize_t
show_fan(struct device
*dev
, struct device_attribute
*devattr
,
657 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
658 struct adt7470_data
*data
= adt7470_update_device(dev
);
660 if (FAN_DATA_VALID(data
->fan
[attr
->index
]))
661 return sprintf(buf
, "%d\n",
662 FAN_PERIOD_TO_RPM(data
->fan
[attr
->index
]));
664 return sprintf(buf
, "0\n");
667 static ssize_t
show_force_pwm_max(struct device
*dev
,
668 struct device_attribute
*devattr
,
671 struct adt7470_data
*data
= adt7470_update_device(dev
);
672 return sprintf(buf
, "%d\n", data
->force_pwm_max
);
675 static ssize_t
set_force_pwm_max(struct device
*dev
,
676 struct device_attribute
*devattr
,
680 struct i2c_client
*client
= to_i2c_client(dev
);
681 struct adt7470_data
*data
= i2c_get_clientdata(client
);
685 if (strict_strtol(buf
, 10, &temp
))
688 mutex_lock(&data
->lock
);
689 data
->force_pwm_max
= temp
;
690 reg
= i2c_smbus_read_byte_data(client
, ADT7470_REG_CFG
);
692 reg
|= ADT7470_FSPD_MASK
;
694 reg
&= ~ADT7470_FSPD_MASK
;
695 i2c_smbus_write_byte_data(client
, ADT7470_REG_CFG
, reg
);
696 mutex_unlock(&data
->lock
);
701 static ssize_t
show_pwm(struct device
*dev
, struct device_attribute
*devattr
,
704 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
705 struct adt7470_data
*data
= adt7470_update_device(dev
);
706 return sprintf(buf
, "%d\n", data
->pwm
[attr
->index
]);
709 static ssize_t
set_pwm(struct device
*dev
, struct device_attribute
*devattr
,
710 const char *buf
, size_t count
)
712 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
713 struct i2c_client
*client
= to_i2c_client(dev
);
714 struct adt7470_data
*data
= i2c_get_clientdata(client
);
717 if (strict_strtol(buf
, 10, &temp
))
720 temp
= SENSORS_LIMIT(temp
, 0, 255);
722 mutex_lock(&data
->lock
);
723 data
->pwm
[attr
->index
] = temp
;
724 i2c_smbus_write_byte_data(client
, ADT7470_REG_PWM(attr
->index
), temp
);
725 mutex_unlock(&data
->lock
);
730 static ssize_t
show_pwm_max(struct device
*dev
,
731 struct device_attribute
*devattr
,
734 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
735 struct adt7470_data
*data
= adt7470_update_device(dev
);
736 return sprintf(buf
, "%d\n", data
->pwm_max
[attr
->index
]);
739 static ssize_t
set_pwm_max(struct device
*dev
,
740 struct device_attribute
*devattr
,
744 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
745 struct i2c_client
*client
= to_i2c_client(dev
);
746 struct adt7470_data
*data
= i2c_get_clientdata(client
);
749 if (strict_strtol(buf
, 10, &temp
))
752 temp
= SENSORS_LIMIT(temp
, 0, 255);
754 mutex_lock(&data
->lock
);
755 data
->pwm_max
[attr
->index
] = temp
;
756 i2c_smbus_write_byte_data(client
, ADT7470_REG_PWM_MAX(attr
->index
),
758 mutex_unlock(&data
->lock
);
763 static ssize_t
show_pwm_min(struct device
*dev
,
764 struct device_attribute
*devattr
,
767 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
768 struct adt7470_data
*data
= adt7470_update_device(dev
);
769 return sprintf(buf
, "%d\n", data
->pwm_min
[attr
->index
]);
772 static ssize_t
set_pwm_min(struct device
*dev
,
773 struct device_attribute
*devattr
,
777 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
778 struct i2c_client
*client
= to_i2c_client(dev
);
779 struct adt7470_data
*data
= i2c_get_clientdata(client
);
782 if (strict_strtol(buf
, 10, &temp
))
785 temp
= SENSORS_LIMIT(temp
, 0, 255);
787 mutex_lock(&data
->lock
);
788 data
->pwm_min
[attr
->index
] = temp
;
789 i2c_smbus_write_byte_data(client
, ADT7470_REG_PWM_MIN(attr
->index
),
791 mutex_unlock(&data
->lock
);
796 static ssize_t
show_pwm_tmax(struct device
*dev
,
797 struct device_attribute
*devattr
,
800 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
801 struct adt7470_data
*data
= adt7470_update_device(dev
);
802 /* the datasheet says that tmax = tmin + 20C */
803 return sprintf(buf
, "%d\n", 1000 * (20 + data
->pwm_tmin
[attr
->index
]));
806 static ssize_t
show_pwm_tmin(struct device
*dev
,
807 struct device_attribute
*devattr
,
810 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
811 struct adt7470_data
*data
= adt7470_update_device(dev
);
812 return sprintf(buf
, "%d\n", 1000 * data
->pwm_tmin
[attr
->index
]);
815 static ssize_t
set_pwm_tmin(struct device
*dev
,
816 struct device_attribute
*devattr
,
820 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
821 struct i2c_client
*client
= to_i2c_client(dev
);
822 struct adt7470_data
*data
= i2c_get_clientdata(client
);
825 if (strict_strtol(buf
, 10, &temp
))
828 temp
= DIV_ROUND_CLOSEST(temp
, 1000);
829 temp
= SENSORS_LIMIT(temp
, 0, 255);
831 mutex_lock(&data
->lock
);
832 data
->pwm_tmin
[attr
->index
] = temp
;
833 i2c_smbus_write_byte_data(client
, ADT7470_REG_PWM_TMIN(attr
->index
),
835 mutex_unlock(&data
->lock
);
840 static ssize_t
show_pwm_auto(struct device
*dev
,
841 struct device_attribute
*devattr
,
844 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
845 struct adt7470_data
*data
= adt7470_update_device(dev
);
846 return sprintf(buf
, "%d\n", 1 + data
->pwm_automatic
[attr
->index
]);
849 static ssize_t
set_pwm_auto(struct device
*dev
,
850 struct device_attribute
*devattr
,
854 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
855 struct i2c_client
*client
= to_i2c_client(dev
);
856 struct adt7470_data
*data
= i2c_get_clientdata(client
);
857 int pwm_auto_reg
= ADT7470_REG_PWM_CFG(attr
->index
);
858 int pwm_auto_reg_mask
;
862 if (strict_strtol(buf
, 10, &temp
))
866 pwm_auto_reg_mask
= ADT7470_PWM2_AUTO_MASK
;
868 pwm_auto_reg_mask
= ADT7470_PWM1_AUTO_MASK
;
870 if (temp
!= 2 && temp
!= 1)
874 mutex_lock(&data
->lock
);
875 data
->pwm_automatic
[attr
->index
] = temp
;
876 reg
= i2c_smbus_read_byte_data(client
, pwm_auto_reg
);
878 reg
|= pwm_auto_reg_mask
;
880 reg
&= ~pwm_auto_reg_mask
;
881 i2c_smbus_write_byte_data(client
, pwm_auto_reg
, reg
);
882 mutex_unlock(&data
->lock
);
887 static ssize_t
show_pwm_auto_temp(struct device
*dev
,
888 struct device_attribute
*devattr
,
891 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
892 struct adt7470_data
*data
= adt7470_update_device(dev
);
893 u8 ctrl
= data
->pwm_auto_temp
[attr
->index
];
896 return sprintf(buf
, "%d\n", 1 << (ctrl
- 1));
898 return sprintf(buf
, "%d\n", ADT7470_PWM_ALL_TEMPS
);
901 static int cvt_auto_temp(int input
)
903 if (input
== ADT7470_PWM_ALL_TEMPS
)
905 if (input
< 1 || !is_power_of_2(input
))
907 return ilog2(input
) + 1;
910 static ssize_t
set_pwm_auto_temp(struct device
*dev
,
911 struct device_attribute
*devattr
,
915 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
916 struct i2c_client
*client
= to_i2c_client(dev
);
917 struct adt7470_data
*data
= i2c_get_clientdata(client
);
918 int pwm_auto_reg
= ADT7470_REG_PWM_AUTO_TEMP(attr
->index
);
922 if (strict_strtol(buf
, 10, &temp
))
925 temp
= cvt_auto_temp(temp
);
929 mutex_lock(&data
->lock
);
930 data
->pwm_automatic
[attr
->index
] = temp
;
931 reg
= i2c_smbus_read_byte_data(client
, pwm_auto_reg
);
933 if (!(attr
->index
% 2)) {
935 reg
|= (temp
<< 4) & 0xF0;
941 i2c_smbus_write_byte_data(client
, pwm_auto_reg
, reg
);
942 mutex_unlock(&data
->lock
);
947 static ssize_t
show_alarm(struct device
*dev
,
948 struct device_attribute
*devattr
,
951 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
952 struct adt7470_data
*data
= adt7470_update_device(dev
);
954 if (data
->alarm
& attr
->index
)
955 return sprintf(buf
, "1\n");
957 return sprintf(buf
, "0\n");
960 static DEVICE_ATTR(alarm_mask
, S_IRUGO
, show_alarm_mask
, NULL
);
961 static DEVICE_ATTR(num_temp_sensors
, S_IWUSR
| S_IRUGO
, show_num_temp_sensors
,
962 set_num_temp_sensors
);
963 static DEVICE_ATTR(auto_update_interval
, S_IWUSR
| S_IRUGO
,
964 show_auto_update_interval
, set_auto_update_interval
);
966 static SENSOR_DEVICE_ATTR(temp1_max
, S_IWUSR
| S_IRUGO
, show_temp_max
,
968 static SENSOR_DEVICE_ATTR(temp2_max
, S_IWUSR
| S_IRUGO
, show_temp_max
,
970 static SENSOR_DEVICE_ATTR(temp3_max
, S_IWUSR
| S_IRUGO
, show_temp_max
,
972 static SENSOR_DEVICE_ATTR(temp4_max
, S_IWUSR
| S_IRUGO
, show_temp_max
,
974 static SENSOR_DEVICE_ATTR(temp5_max
, S_IWUSR
| S_IRUGO
, show_temp_max
,
976 static SENSOR_DEVICE_ATTR(temp6_max
, S_IWUSR
| S_IRUGO
, show_temp_max
,
978 static SENSOR_DEVICE_ATTR(temp7_max
, S_IWUSR
| S_IRUGO
, show_temp_max
,
980 static SENSOR_DEVICE_ATTR(temp8_max
, S_IWUSR
| S_IRUGO
, show_temp_max
,
982 static SENSOR_DEVICE_ATTR(temp9_max
, S_IWUSR
| S_IRUGO
, show_temp_max
,
984 static SENSOR_DEVICE_ATTR(temp10_max
, S_IWUSR
| S_IRUGO
, show_temp_max
,
987 static SENSOR_DEVICE_ATTR(temp1_min
, S_IWUSR
| S_IRUGO
, show_temp_min
,
989 static SENSOR_DEVICE_ATTR(temp2_min
, S_IWUSR
| S_IRUGO
, show_temp_min
,
991 static SENSOR_DEVICE_ATTR(temp3_min
, S_IWUSR
| S_IRUGO
, show_temp_min
,
993 static SENSOR_DEVICE_ATTR(temp4_min
, S_IWUSR
| S_IRUGO
, show_temp_min
,
995 static SENSOR_DEVICE_ATTR(temp5_min
, S_IWUSR
| S_IRUGO
, show_temp_min
,
997 static SENSOR_DEVICE_ATTR(temp6_min
, S_IWUSR
| S_IRUGO
, show_temp_min
,
999 static SENSOR_DEVICE_ATTR(temp7_min
, S_IWUSR
| S_IRUGO
, show_temp_min
,
1001 static SENSOR_DEVICE_ATTR(temp8_min
, S_IWUSR
| S_IRUGO
, show_temp_min
,
1003 static SENSOR_DEVICE_ATTR(temp9_min
, S_IWUSR
| S_IRUGO
, show_temp_min
,
1005 static SENSOR_DEVICE_ATTR(temp10_min
, S_IWUSR
| S_IRUGO
, show_temp_min
,
1008 static SENSOR_DEVICE_ATTR(temp1_input
, S_IRUGO
, show_temp
, NULL
, 0);
1009 static SENSOR_DEVICE_ATTR(temp2_input
, S_IRUGO
, show_temp
, NULL
, 1);
1010 static SENSOR_DEVICE_ATTR(temp3_input
, S_IRUGO
, show_temp
, NULL
, 2);
1011 static SENSOR_DEVICE_ATTR(temp4_input
, S_IRUGO
, show_temp
, NULL
, 3);
1012 static SENSOR_DEVICE_ATTR(temp5_input
, S_IRUGO
, show_temp
, NULL
, 4);
1013 static SENSOR_DEVICE_ATTR(temp6_input
, S_IRUGO
, show_temp
, NULL
, 5);
1014 static SENSOR_DEVICE_ATTR(temp7_input
, S_IRUGO
, show_temp
, NULL
, 6);
1015 static SENSOR_DEVICE_ATTR(temp8_input
, S_IRUGO
, show_temp
, NULL
, 7);
1016 static SENSOR_DEVICE_ATTR(temp9_input
, S_IRUGO
, show_temp
, NULL
, 8);
1017 static SENSOR_DEVICE_ATTR(temp10_input
, S_IRUGO
, show_temp
, NULL
, 9);
1019 static SENSOR_DEVICE_ATTR(temp1_alarm
, S_IRUGO
, show_alarm
, NULL
,
1021 static SENSOR_DEVICE_ATTR(temp2_alarm
, S_IRUGO
, show_alarm
, NULL
,
1023 static SENSOR_DEVICE_ATTR(temp3_alarm
, S_IRUGO
, show_alarm
, NULL
,
1025 static SENSOR_DEVICE_ATTR(temp4_alarm
, S_IRUGO
, show_alarm
, NULL
,
1027 static SENSOR_DEVICE_ATTR(temp5_alarm
, S_IRUGO
, show_alarm
, NULL
,
1029 static SENSOR_DEVICE_ATTR(temp6_alarm
, S_IRUGO
, show_alarm
, NULL
,
1031 static SENSOR_DEVICE_ATTR(temp7_alarm
, S_IRUGO
, show_alarm
, NULL
,
1033 static SENSOR_DEVICE_ATTR(temp8_alarm
, S_IRUGO
, show_alarm
, NULL
,
1034 ALARM2(ADT7470_R8T_ALARM
));
1035 static SENSOR_DEVICE_ATTR(temp9_alarm
, S_IRUGO
, show_alarm
, NULL
,
1036 ALARM2(ADT7470_R9T_ALARM
));
1037 static SENSOR_DEVICE_ATTR(temp10_alarm
, S_IRUGO
, show_alarm
, NULL
,
1038 ALARM2(ADT7470_R10T_ALARM
));
1040 static SENSOR_DEVICE_ATTR(fan1_max
, S_IWUSR
| S_IRUGO
, show_fan_max
,
1042 static SENSOR_DEVICE_ATTR(fan2_max
, S_IWUSR
| S_IRUGO
, show_fan_max
,
1044 static SENSOR_DEVICE_ATTR(fan3_max
, S_IWUSR
| S_IRUGO
, show_fan_max
,
1046 static SENSOR_DEVICE_ATTR(fan4_max
, S_IWUSR
| S_IRUGO
, show_fan_max
,
1049 static SENSOR_DEVICE_ATTR(fan1_min
, S_IWUSR
| S_IRUGO
, show_fan_min
,
1051 static SENSOR_DEVICE_ATTR(fan2_min
, S_IWUSR
| S_IRUGO
, show_fan_min
,
1053 static SENSOR_DEVICE_ATTR(fan3_min
, S_IWUSR
| S_IRUGO
, show_fan_min
,
1055 static SENSOR_DEVICE_ATTR(fan4_min
, S_IWUSR
| S_IRUGO
, show_fan_min
,
1058 static SENSOR_DEVICE_ATTR(fan1_input
, S_IRUGO
, show_fan
, NULL
, 0);
1059 static SENSOR_DEVICE_ATTR(fan2_input
, S_IRUGO
, show_fan
, NULL
, 1);
1060 static SENSOR_DEVICE_ATTR(fan3_input
, S_IRUGO
, show_fan
, NULL
, 2);
1061 static SENSOR_DEVICE_ATTR(fan4_input
, S_IRUGO
, show_fan
, NULL
, 3);
1063 static SENSOR_DEVICE_ATTR(fan1_alarm
, S_IRUGO
, show_alarm
, NULL
,
1064 ALARM2(ADT7470_FAN1_ALARM
));
1065 static SENSOR_DEVICE_ATTR(fan2_alarm
, S_IRUGO
, show_alarm
, NULL
,
1066 ALARM2(ADT7470_FAN2_ALARM
));
1067 static SENSOR_DEVICE_ATTR(fan3_alarm
, S_IRUGO
, show_alarm
, NULL
,
1068 ALARM2(ADT7470_FAN3_ALARM
));
1069 static SENSOR_DEVICE_ATTR(fan4_alarm
, S_IRUGO
, show_alarm
, NULL
,
1070 ALARM2(ADT7470_FAN4_ALARM
));
1072 static SENSOR_DEVICE_ATTR(force_pwm_max
, S_IWUSR
| S_IRUGO
,
1073 show_force_pwm_max
, set_force_pwm_max
, 0);
1075 static SENSOR_DEVICE_ATTR(pwm1
, S_IWUSR
| S_IRUGO
, show_pwm
, set_pwm
, 0);
1076 static SENSOR_DEVICE_ATTR(pwm2
, S_IWUSR
| S_IRUGO
, show_pwm
, set_pwm
, 1);
1077 static SENSOR_DEVICE_ATTR(pwm3
, S_IWUSR
| S_IRUGO
, show_pwm
, set_pwm
, 2);
1078 static SENSOR_DEVICE_ATTR(pwm4
, S_IWUSR
| S_IRUGO
, show_pwm
, set_pwm
, 3);
1080 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm
, S_IWUSR
| S_IRUGO
,
1081 show_pwm_min
, set_pwm_min
, 0);
1082 static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm
, S_IWUSR
| S_IRUGO
,
1083 show_pwm_min
, set_pwm_min
, 1);
1084 static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm
, S_IWUSR
| S_IRUGO
,
1085 show_pwm_min
, set_pwm_min
, 2);
1086 static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm
, S_IWUSR
| S_IRUGO
,
1087 show_pwm_min
, set_pwm_min
, 3);
1089 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm
, S_IWUSR
| S_IRUGO
,
1090 show_pwm_max
, set_pwm_max
, 0);
1091 static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm
, S_IWUSR
| S_IRUGO
,
1092 show_pwm_max
, set_pwm_max
, 1);
1093 static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm
, S_IWUSR
| S_IRUGO
,
1094 show_pwm_max
, set_pwm_max
, 2);
1095 static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm
, S_IWUSR
| S_IRUGO
,
1096 show_pwm_max
, set_pwm_max
, 3);
1098 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp
, S_IWUSR
| S_IRUGO
,
1099 show_pwm_tmin
, set_pwm_tmin
, 0);
1100 static SENSOR_DEVICE_ATTR(pwm2_auto_point1_temp
, S_IWUSR
| S_IRUGO
,
1101 show_pwm_tmin
, set_pwm_tmin
, 1);
1102 static SENSOR_DEVICE_ATTR(pwm3_auto_point1_temp
, S_IWUSR
| S_IRUGO
,
1103 show_pwm_tmin
, set_pwm_tmin
, 2);
1104 static SENSOR_DEVICE_ATTR(pwm4_auto_point1_temp
, S_IWUSR
| S_IRUGO
,
1105 show_pwm_tmin
, set_pwm_tmin
, 3);
1107 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp
, S_IRUGO
, show_pwm_tmax
,
1109 static SENSOR_DEVICE_ATTR(pwm2_auto_point2_temp
, S_IRUGO
, show_pwm_tmax
,
1111 static SENSOR_DEVICE_ATTR(pwm3_auto_point2_temp
, S_IRUGO
, show_pwm_tmax
,
1113 static SENSOR_DEVICE_ATTR(pwm4_auto_point2_temp
, S_IRUGO
, show_pwm_tmax
,
1116 static SENSOR_DEVICE_ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
, show_pwm_auto
,
1118 static SENSOR_DEVICE_ATTR(pwm2_enable
, S_IWUSR
| S_IRUGO
, show_pwm_auto
,
1120 static SENSOR_DEVICE_ATTR(pwm3_enable
, S_IWUSR
| S_IRUGO
, show_pwm_auto
,
1122 static SENSOR_DEVICE_ATTR(pwm4_enable
, S_IWUSR
| S_IRUGO
, show_pwm_auto
,
1125 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp
, S_IWUSR
| S_IRUGO
,
1126 show_pwm_auto_temp
, set_pwm_auto_temp
, 0);
1127 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp
, S_IWUSR
| S_IRUGO
,
1128 show_pwm_auto_temp
, set_pwm_auto_temp
, 1);
1129 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp
, S_IWUSR
| S_IRUGO
,
1130 show_pwm_auto_temp
, set_pwm_auto_temp
, 2);
1131 static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp
, S_IWUSR
| S_IRUGO
,
1132 show_pwm_auto_temp
, set_pwm_auto_temp
, 3);
1134 static struct attribute
*adt7470_attr
[] =
1136 &dev_attr_alarm_mask
.attr
,
1137 &dev_attr_num_temp_sensors
.attr
,
1138 &dev_attr_auto_update_interval
.attr
,
1139 &sensor_dev_attr_temp1_max
.dev_attr
.attr
,
1140 &sensor_dev_attr_temp2_max
.dev_attr
.attr
,
1141 &sensor_dev_attr_temp3_max
.dev_attr
.attr
,
1142 &sensor_dev_attr_temp4_max
.dev_attr
.attr
,
1143 &sensor_dev_attr_temp5_max
.dev_attr
.attr
,
1144 &sensor_dev_attr_temp6_max
.dev_attr
.attr
,
1145 &sensor_dev_attr_temp7_max
.dev_attr
.attr
,
1146 &sensor_dev_attr_temp8_max
.dev_attr
.attr
,
1147 &sensor_dev_attr_temp9_max
.dev_attr
.attr
,
1148 &sensor_dev_attr_temp10_max
.dev_attr
.attr
,
1149 &sensor_dev_attr_temp1_min
.dev_attr
.attr
,
1150 &sensor_dev_attr_temp2_min
.dev_attr
.attr
,
1151 &sensor_dev_attr_temp3_min
.dev_attr
.attr
,
1152 &sensor_dev_attr_temp4_min
.dev_attr
.attr
,
1153 &sensor_dev_attr_temp5_min
.dev_attr
.attr
,
1154 &sensor_dev_attr_temp6_min
.dev_attr
.attr
,
1155 &sensor_dev_attr_temp7_min
.dev_attr
.attr
,
1156 &sensor_dev_attr_temp8_min
.dev_attr
.attr
,
1157 &sensor_dev_attr_temp9_min
.dev_attr
.attr
,
1158 &sensor_dev_attr_temp10_min
.dev_attr
.attr
,
1159 &sensor_dev_attr_temp1_input
.dev_attr
.attr
,
1160 &sensor_dev_attr_temp2_input
.dev_attr
.attr
,
1161 &sensor_dev_attr_temp3_input
.dev_attr
.attr
,
1162 &sensor_dev_attr_temp4_input
.dev_attr
.attr
,
1163 &sensor_dev_attr_temp5_input
.dev_attr
.attr
,
1164 &sensor_dev_attr_temp6_input
.dev_attr
.attr
,
1165 &sensor_dev_attr_temp7_input
.dev_attr
.attr
,
1166 &sensor_dev_attr_temp8_input
.dev_attr
.attr
,
1167 &sensor_dev_attr_temp9_input
.dev_attr
.attr
,
1168 &sensor_dev_attr_temp10_input
.dev_attr
.attr
,
1169 &sensor_dev_attr_temp1_alarm
.dev_attr
.attr
,
1170 &sensor_dev_attr_temp2_alarm
.dev_attr
.attr
,
1171 &sensor_dev_attr_temp3_alarm
.dev_attr
.attr
,
1172 &sensor_dev_attr_temp4_alarm
.dev_attr
.attr
,
1173 &sensor_dev_attr_temp5_alarm
.dev_attr
.attr
,
1174 &sensor_dev_attr_temp6_alarm
.dev_attr
.attr
,
1175 &sensor_dev_attr_temp7_alarm
.dev_attr
.attr
,
1176 &sensor_dev_attr_temp8_alarm
.dev_attr
.attr
,
1177 &sensor_dev_attr_temp9_alarm
.dev_attr
.attr
,
1178 &sensor_dev_attr_temp10_alarm
.dev_attr
.attr
,
1179 &sensor_dev_attr_fan1_max
.dev_attr
.attr
,
1180 &sensor_dev_attr_fan2_max
.dev_attr
.attr
,
1181 &sensor_dev_attr_fan3_max
.dev_attr
.attr
,
1182 &sensor_dev_attr_fan4_max
.dev_attr
.attr
,
1183 &sensor_dev_attr_fan1_min
.dev_attr
.attr
,
1184 &sensor_dev_attr_fan2_min
.dev_attr
.attr
,
1185 &sensor_dev_attr_fan3_min
.dev_attr
.attr
,
1186 &sensor_dev_attr_fan4_min
.dev_attr
.attr
,
1187 &sensor_dev_attr_fan1_input
.dev_attr
.attr
,
1188 &sensor_dev_attr_fan2_input
.dev_attr
.attr
,
1189 &sensor_dev_attr_fan3_input
.dev_attr
.attr
,
1190 &sensor_dev_attr_fan4_input
.dev_attr
.attr
,
1191 &sensor_dev_attr_fan1_alarm
.dev_attr
.attr
,
1192 &sensor_dev_attr_fan2_alarm
.dev_attr
.attr
,
1193 &sensor_dev_attr_fan3_alarm
.dev_attr
.attr
,
1194 &sensor_dev_attr_fan4_alarm
.dev_attr
.attr
,
1195 &sensor_dev_attr_force_pwm_max
.dev_attr
.attr
,
1196 &sensor_dev_attr_pwm1
.dev_attr
.attr
,
1197 &sensor_dev_attr_pwm2
.dev_attr
.attr
,
1198 &sensor_dev_attr_pwm3
.dev_attr
.attr
,
1199 &sensor_dev_attr_pwm4
.dev_attr
.attr
,
1200 &sensor_dev_attr_pwm1_auto_point1_pwm
.dev_attr
.attr
,
1201 &sensor_dev_attr_pwm2_auto_point1_pwm
.dev_attr
.attr
,
1202 &sensor_dev_attr_pwm3_auto_point1_pwm
.dev_attr
.attr
,
1203 &sensor_dev_attr_pwm4_auto_point1_pwm
.dev_attr
.attr
,
1204 &sensor_dev_attr_pwm1_auto_point2_pwm
.dev_attr
.attr
,
1205 &sensor_dev_attr_pwm2_auto_point2_pwm
.dev_attr
.attr
,
1206 &sensor_dev_attr_pwm3_auto_point2_pwm
.dev_attr
.attr
,
1207 &sensor_dev_attr_pwm4_auto_point2_pwm
.dev_attr
.attr
,
1208 &sensor_dev_attr_pwm1_auto_point1_temp
.dev_attr
.attr
,
1209 &sensor_dev_attr_pwm2_auto_point1_temp
.dev_attr
.attr
,
1210 &sensor_dev_attr_pwm3_auto_point1_temp
.dev_attr
.attr
,
1211 &sensor_dev_attr_pwm4_auto_point1_temp
.dev_attr
.attr
,
1212 &sensor_dev_attr_pwm1_auto_point2_temp
.dev_attr
.attr
,
1213 &sensor_dev_attr_pwm2_auto_point2_temp
.dev_attr
.attr
,
1214 &sensor_dev_attr_pwm3_auto_point2_temp
.dev_attr
.attr
,
1215 &sensor_dev_attr_pwm4_auto_point2_temp
.dev_attr
.attr
,
1216 &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
,
1217 &sensor_dev_attr_pwm2_enable
.dev_attr
.attr
,
1218 &sensor_dev_attr_pwm3_enable
.dev_attr
.attr
,
1219 &sensor_dev_attr_pwm4_enable
.dev_attr
.attr
,
1220 &sensor_dev_attr_pwm1_auto_channels_temp
.dev_attr
.attr
,
1221 &sensor_dev_attr_pwm2_auto_channels_temp
.dev_attr
.attr
,
1222 &sensor_dev_attr_pwm3_auto_channels_temp
.dev_attr
.attr
,
1223 &sensor_dev_attr_pwm4_auto_channels_temp
.dev_attr
.attr
,
1227 /* Return 0 if detection is successful, -ENODEV otherwise */
1228 static int adt7470_detect(struct i2c_client
*client
,
1229 struct i2c_board_info
*info
)
1231 struct i2c_adapter
*adapter
= client
->adapter
;
1232 int vendor
, device
, revision
;
1234 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
1237 vendor
= i2c_smbus_read_byte_data(client
, ADT7470_REG_VENDOR
);
1238 if (vendor
!= ADT7470_VENDOR
)
1241 device
= i2c_smbus_read_byte_data(client
, ADT7470_REG_DEVICE
);
1242 if (device
!= ADT7470_DEVICE
)
1245 revision
= i2c_smbus_read_byte_data(client
, ADT7470_REG_REVISION
);
1246 if (revision
!= ADT7470_REVISION
)
1249 strlcpy(info
->type
, "adt7470", I2C_NAME_SIZE
);
1254 static int adt7470_probe(struct i2c_client
*client
,
1255 const struct i2c_device_id
*id
)
1257 struct adt7470_data
*data
;
1260 data
= kzalloc(sizeof(struct adt7470_data
), GFP_KERNEL
);
1266 data
->num_temp_sensors
= -1;
1267 data
->auto_update_interval
= AUTO_UPDATE_INTERVAL
;
1269 i2c_set_clientdata(client
, data
);
1270 mutex_init(&data
->lock
);
1272 dev_info(&client
->dev
, "%s chip found\n", client
->name
);
1274 /* Initialize the ADT7470 chip */
1275 adt7470_init_client(client
);
1277 /* Register sysfs hooks */
1278 data
->attrs
.attrs
= adt7470_attr
;
1279 if ((err
= sysfs_create_group(&client
->dev
.kobj
, &data
->attrs
)))
1282 data
->hwmon_dev
= hwmon_device_register(&client
->dev
);
1283 if (IS_ERR(data
->hwmon_dev
)) {
1284 err
= PTR_ERR(data
->hwmon_dev
);
1288 init_completion(&data
->auto_update_stop
);
1289 data
->auto_update
= kthread_run(adt7470_update_thread
, client
,
1290 dev_name(data
->hwmon_dev
));
1291 if (IS_ERR(data
->auto_update
)) {
1292 err
= PTR_ERR(data
->auto_update
);
1293 goto exit_unregister
;
1299 hwmon_device_unregister(data
->hwmon_dev
);
1301 sysfs_remove_group(&client
->dev
.kobj
, &data
->attrs
);
1308 static int adt7470_remove(struct i2c_client
*client
)
1310 struct adt7470_data
*data
= i2c_get_clientdata(client
);
1312 kthread_stop(data
->auto_update
);
1313 wait_for_completion(&data
->auto_update_stop
);
1314 hwmon_device_unregister(data
->hwmon_dev
);
1315 sysfs_remove_group(&client
->dev
.kobj
, &data
->attrs
);
1320 static int __init
adt7470_init(void)
1322 return i2c_add_driver(&adt7470_driver
);
1325 static void __exit
adt7470_exit(void)
1327 i2c_del_driver(&adt7470_driver
);
1330 MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
1331 MODULE_DESCRIPTION("ADT7470 driver");
1332 MODULE_LICENSE("GPL");
1334 module_init(adt7470_init
);
1335 module_exit(adt7470_exit
);