2 adm1031.c - Part of lm_sensors, Linux kernel modules for hardware
4 Based on lm75.c and lm85.c
5 Supports adm1030 / adm1031
6 Copyright (C) 2004 Alexandre d'Alton <alex@alexdalton.org>
7 Reworked by Jean Delvare <khali@linux-fr.org>
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/slab.h>
27 #include <linux/jiffies.h>
28 #include <linux/i2c.h>
29 #include <linux/hwmon.h>
30 #include <linux/err.h>
31 #include <linux/mutex.h>
33 /* Following macros takes channel parameter starting from 0 to 2 */
34 #define ADM1031_REG_FAN_SPEED(nr) (0x08 + (nr))
35 #define ADM1031_REG_FAN_DIV(nr) (0x20 + (nr))
36 #define ADM1031_REG_PWM (0x22)
37 #define ADM1031_REG_FAN_MIN(nr) (0x10 + (nr))
39 #define ADM1031_REG_TEMP_MAX(nr) (0x14 + 4*(nr))
40 #define ADM1031_REG_TEMP_MIN(nr) (0x15 + 4*(nr))
41 #define ADM1031_REG_TEMP_CRIT(nr) (0x16 + 4*(nr))
43 #define ADM1031_REG_TEMP(nr) (0xa + (nr))
44 #define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr))
46 #define ADM1031_REG_STATUS(nr) (0x2 + (nr))
48 #define ADM1031_REG_CONF1 0x0
49 #define ADM1031_REG_CONF2 0x1
50 #define ADM1031_REG_EXT_TEMP 0x6
52 #define ADM1031_CONF1_MONITOR_ENABLE 0x01 /* Monitoring enable */
53 #define ADM1031_CONF1_PWM_INVERT 0x08 /* PWM Invert */
54 #define ADM1031_CONF1_AUTO_MODE 0x80 /* Auto FAN */
56 #define ADM1031_CONF2_PWM1_ENABLE 0x01
57 #define ADM1031_CONF2_PWM2_ENABLE 0x02
58 #define ADM1031_CONF2_TACH1_ENABLE 0x04
59 #define ADM1031_CONF2_TACH2_ENABLE 0x08
60 #define ADM1031_CONF2_TEMP_ENABLE(chan) (0x10 << (chan))
62 /* Addresses to scan */
63 static unsigned short normal_i2c
[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END
};
65 /* Insmod parameters */
66 I2C_CLIENT_INSMOD_2(adm1030
, adm1031
);
68 typedef u8 auto_chan_table_t
[8][2];
70 /* Each client has this additional data */
72 struct i2c_client client
;
73 struct device
*hwmon_dev
;
74 struct mutex update_lock
;
76 char valid
; /* !=0 if following fields are valid */
77 unsigned long last_updated
; /* In jiffies */
78 /* The chan_select_table contains the possible configurations for
81 auto_chan_table_t
*chan_select_table
;
101 static int adm1031_attach_adapter(struct i2c_adapter
*adapter
);
102 static int adm1031_detect(struct i2c_adapter
*adapter
, int address
, int kind
);
103 static void adm1031_init_client(struct i2c_client
*client
);
104 static int adm1031_detach_client(struct i2c_client
*client
);
105 static struct adm1031_data
*adm1031_update_device(struct device
*dev
);
107 /* This is the driver that will be inserted */
108 static struct i2c_driver adm1031_driver
= {
112 .attach_adapter
= adm1031_attach_adapter
,
113 .detach_client
= adm1031_detach_client
,
116 static inline u8
adm1031_read_value(struct i2c_client
*client
, u8 reg
)
118 return i2c_smbus_read_byte_data(client
, reg
);
122 adm1031_write_value(struct i2c_client
*client
, u8 reg
, unsigned int value
)
124 return i2c_smbus_write_byte_data(client
, reg
, value
);
128 #define TEMP_TO_REG(val) (((val) < 0 ? ((val - 500) / 1000) : \
129 ((val + 500) / 1000)))
131 #define TEMP_FROM_REG(val) ((val) * 1000)
133 #define TEMP_FROM_REG_EXT(val, ext) (TEMP_FROM_REG(val) + (ext) * 125)
135 #define FAN_FROM_REG(reg, div) ((reg) ? (11250 * 60) / ((reg) * (div)) : 0)
137 static int FAN_TO_REG(int reg
, int div
)
140 tmp
= FAN_FROM_REG(SENSORS_LIMIT(reg
, 0, 65535), div
);
141 return tmp
> 255 ? 255 : tmp
;
144 #define FAN_DIV_FROM_REG(reg) (1<<(((reg)&0xc0)>>6))
146 #define PWM_TO_REG(val) (SENSORS_LIMIT((val), 0, 255) >> 4)
147 #define PWM_FROM_REG(val) ((val) << 4)
149 #define FAN_CHAN_FROM_REG(reg) (((reg) >> 5) & 7)
150 #define FAN_CHAN_TO_REG(val, reg) \
151 (((reg) & 0x1F) | (((val) << 5) & 0xe0))
153 #define AUTO_TEMP_MIN_TO_REG(val, reg) \
154 ((((val)/500) & 0xf8)|((reg) & 0x7))
155 #define AUTO_TEMP_RANGE_FROM_REG(reg) (5000 * (1<< ((reg)&0x7)))
156 #define AUTO_TEMP_MIN_FROM_REG(reg) (1000 * ((((reg) >> 3) & 0x1f) << 2))
158 #define AUTO_TEMP_MIN_FROM_REG_DEG(reg) ((((reg) >> 3) & 0x1f) << 2)
160 #define AUTO_TEMP_OFF_FROM_REG(reg) \
161 (AUTO_TEMP_MIN_FROM_REG(reg) - 5000)
163 #define AUTO_TEMP_MAX_FROM_REG(reg) \
164 (AUTO_TEMP_RANGE_FROM_REG(reg) + \
165 AUTO_TEMP_MIN_FROM_REG(reg))
167 static int AUTO_TEMP_MAX_TO_REG(int val
, int reg
, int pwm
)
170 int range
= val
- AUTO_TEMP_MIN_FROM_REG(reg
);
172 range
= ((val
- AUTO_TEMP_MIN_FROM_REG(reg
))*10)/(16 - pwm
);
173 ret
= ((reg
& 0xf8) |
176 range
< 40000 ? 2 : range
< 80000 ? 3 : 4));
180 /* FAN auto control */
181 #define GET_FAN_AUTO_BITFIELD(data, idx) \
182 (*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx%2]
184 /* The tables below contains the possible values for the auto fan
185 * control bitfields. the index in the table is the register value.
186 * MSb is the auto fan control enable bit, so the four first entries
187 * in the table disables auto fan control when both bitfields are zero.
189 static auto_chan_table_t auto_channel_select_table_adm1031
= {
190 {0, 0}, {0, 0}, {0, 0}, {0, 0},
191 {2 /*0b010 */ , 4 /*0b100 */ },
192 {2 /*0b010 */ , 2 /*0b010 */ },
193 {4 /*0b100 */ , 4 /*0b100 */ },
194 {7 /*0b111 */ , 7 /*0b111 */ },
197 static auto_chan_table_t auto_channel_select_table_adm1030
= {
198 {0, 0}, {0, 0}, {0, 0}, {0, 0},
200 {0xff /*invalid */ , 0},
201 {0xff /*invalid */ , 0},
205 /* That function checks if a bitfield is valid and returns the other bitfield
206 * nearest match if no exact match where found.
209 get_fan_auto_nearest(struct adm1031_data
*data
,
210 int chan
, u8 val
, u8 reg
, u8
* new_reg
)
213 int first_match
= -1, exact_match
= -1;
215 (*data
->chan_select_table
)[FAN_CHAN_FROM_REG(reg
)][chan
? 0 : 1];
222 for (i
= 0; i
< 8; i
++) {
223 if ((val
== (*data
->chan_select_table
)[i
][chan
]) &&
224 ((*data
->chan_select_table
)[i
][chan
? 0 : 1] ==
226 /* We found an exact match */
229 } else if (val
== (*data
->chan_select_table
)[i
][chan
] &&
231 /* Save the first match in case of an exact match has not been
238 if (exact_match
>= 0) {
239 *new_reg
= exact_match
;
240 } else if (first_match
>= 0) {
241 *new_reg
= first_match
;
248 static ssize_t
show_fan_auto_channel(struct device
*dev
, char *buf
, int nr
)
250 struct adm1031_data
*data
= adm1031_update_device(dev
);
251 return sprintf(buf
, "%d\n", GET_FAN_AUTO_BITFIELD(data
, nr
));
255 set_fan_auto_channel(struct device
*dev
, const char *buf
, size_t count
, int nr
)
257 struct i2c_client
*client
= to_i2c_client(dev
);
258 struct adm1031_data
*data
= i2c_get_clientdata(client
);
259 int val
= simple_strtol(buf
, NULL
, 10);
264 old_fan_mode
= data
->conf1
;
266 mutex_lock(&data
->update_lock
);
268 if ((ret
= get_fan_auto_nearest(data
, nr
, val
, data
->conf1
, ®
))) {
269 mutex_unlock(&data
->update_lock
);
272 if (((data
->conf1
= FAN_CHAN_TO_REG(reg
, data
->conf1
)) & ADM1031_CONF1_AUTO_MODE
) ^
273 (old_fan_mode
& ADM1031_CONF1_AUTO_MODE
)) {
274 if (data
->conf1
& ADM1031_CONF1_AUTO_MODE
){
275 /* Switch to Auto Fan Mode
277 * Set PWM registers to 33% Both */
278 data
->old_pwm
[0] = data
->pwm
[0];
279 data
->old_pwm
[1] = data
->pwm
[1];
280 adm1031_write_value(client
, ADM1031_REG_PWM
, 0x55);
282 /* Switch to Manual Mode */
283 data
->pwm
[0] = data
->old_pwm
[0];
284 data
->pwm
[1] = data
->old_pwm
[1];
285 /* Restore PWM registers */
286 adm1031_write_value(client
, ADM1031_REG_PWM
,
287 data
->pwm
[0] | (data
->pwm
[1] << 4));
290 data
->conf1
= FAN_CHAN_TO_REG(reg
, data
->conf1
);
291 adm1031_write_value(client
, ADM1031_REG_CONF1
, data
->conf1
);
292 mutex_unlock(&data
->update_lock
);
296 #define fan_auto_channel_offset(offset) \
297 static ssize_t show_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
299 return show_fan_auto_channel(dev, buf, offset - 1); \
301 static ssize_t set_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, \
302 const char *buf, size_t count) \
304 return set_fan_auto_channel(dev, buf, count, offset - 1); \
306 static DEVICE_ATTR(auto_fan##offset##_channel, S_IRUGO | S_IWUSR, \
307 show_fan_auto_channel_##offset, \
308 set_fan_auto_channel_##offset)
310 fan_auto_channel_offset(1);
311 fan_auto_channel_offset(2);
314 static ssize_t
show_auto_temp_off(struct device
*dev
, char *buf
, int nr
)
316 struct adm1031_data
*data
= adm1031_update_device(dev
);
317 return sprintf(buf
, "%d\n",
318 AUTO_TEMP_OFF_FROM_REG(data
->auto_temp
[nr
]));
320 static ssize_t
show_auto_temp_min(struct device
*dev
, char *buf
, int nr
)
322 struct adm1031_data
*data
= adm1031_update_device(dev
);
323 return sprintf(buf
, "%d\n",
324 AUTO_TEMP_MIN_FROM_REG(data
->auto_temp
[nr
]));
327 set_auto_temp_min(struct device
*dev
, const char *buf
, size_t count
, int nr
)
329 struct i2c_client
*client
= to_i2c_client(dev
);
330 struct adm1031_data
*data
= i2c_get_clientdata(client
);
331 int val
= simple_strtol(buf
, NULL
, 10);
333 mutex_lock(&data
->update_lock
);
334 data
->auto_temp
[nr
] = AUTO_TEMP_MIN_TO_REG(val
, data
->auto_temp
[nr
]);
335 adm1031_write_value(client
, ADM1031_REG_AUTO_TEMP(nr
),
336 data
->auto_temp
[nr
]);
337 mutex_unlock(&data
->update_lock
);
340 static ssize_t
show_auto_temp_max(struct device
*dev
, char *buf
, int nr
)
342 struct adm1031_data
*data
= adm1031_update_device(dev
);
343 return sprintf(buf
, "%d\n",
344 AUTO_TEMP_MAX_FROM_REG(data
->auto_temp
[nr
]));
347 set_auto_temp_max(struct device
*dev
, const char *buf
, size_t count
, int nr
)
349 struct i2c_client
*client
= to_i2c_client(dev
);
350 struct adm1031_data
*data
= i2c_get_clientdata(client
);
351 int val
= simple_strtol(buf
, NULL
, 10);
353 mutex_lock(&data
->update_lock
);
354 data
->temp_max
[nr
] = AUTO_TEMP_MAX_TO_REG(val
, data
->auto_temp
[nr
], data
->pwm
[nr
]);
355 adm1031_write_value(client
, ADM1031_REG_AUTO_TEMP(nr
),
357 mutex_unlock(&data
->update_lock
);
361 #define auto_temp_reg(offset) \
362 static ssize_t show_auto_temp_##offset##_off (struct device *dev, struct device_attribute *attr, char *buf) \
364 return show_auto_temp_off(dev, buf, offset - 1); \
366 static ssize_t show_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
368 return show_auto_temp_min(dev, buf, offset - 1); \
370 static ssize_t show_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
372 return show_auto_temp_max(dev, buf, offset - 1); \
374 static ssize_t set_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
375 const char *buf, size_t count) \
377 return set_auto_temp_min(dev, buf, count, offset - 1); \
379 static ssize_t set_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
380 const char *buf, size_t count) \
382 return set_auto_temp_max(dev, buf, count, offset - 1); \
384 static DEVICE_ATTR(auto_temp##offset##_off, S_IRUGO, \
385 show_auto_temp_##offset##_off, NULL); \
386 static DEVICE_ATTR(auto_temp##offset##_min, S_IRUGO | S_IWUSR, \
387 show_auto_temp_##offset##_min, set_auto_temp_##offset##_min);\
388 static DEVICE_ATTR(auto_temp##offset##_max, S_IRUGO | S_IWUSR, \
389 show_auto_temp_##offset##_max, set_auto_temp_##offset##_max)
396 static ssize_t
show_pwm(struct device
*dev
, char *buf
, int nr
)
398 struct adm1031_data
*data
= adm1031_update_device(dev
);
399 return sprintf(buf
, "%d\n", PWM_FROM_REG(data
->pwm
[nr
]));
402 set_pwm(struct device
*dev
, const char *buf
, size_t count
, int nr
)
404 struct i2c_client
*client
= to_i2c_client(dev
);
405 struct adm1031_data
*data
= i2c_get_clientdata(client
);
406 int val
= simple_strtol(buf
, NULL
, 10);
409 mutex_lock(&data
->update_lock
);
410 if ((data
->conf1
& ADM1031_CONF1_AUTO_MODE
) &&
411 (((val
>>4) & 0xf) != 5)) {
412 /* In automatic mode, the only PWM accepted is 33% */
413 mutex_unlock(&data
->update_lock
);
416 data
->pwm
[nr
] = PWM_TO_REG(val
);
417 reg
= adm1031_read_value(client
, ADM1031_REG_PWM
);
418 adm1031_write_value(client
, ADM1031_REG_PWM
,
419 nr
? ((data
->pwm
[nr
] << 4) & 0xf0) | (reg
& 0xf)
420 : (data
->pwm
[nr
] & 0xf) | (reg
& 0xf0));
421 mutex_unlock(&data
->update_lock
);
425 #define pwm_reg(offset) \
426 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
428 return show_pwm(dev, buf, offset - 1); \
430 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \
431 const char *buf, size_t count) \
433 return set_pwm(dev, buf, count, offset - 1); \
435 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
436 show_pwm_##offset, set_pwm_##offset)
444 * That function checks the cases where the fan reading is not
445 * relevant. It is used to provide 0 as fan reading when the fan is
446 * not supposed to run
448 static int trust_fan_readings(struct adm1031_data
*data
, int chan
)
452 if (data
->conf1
& ADM1031_CONF1_AUTO_MODE
) {
453 switch (data
->conf1
& 0x60) {
454 case 0x00: /* remote temp1 controls fan1 remote temp2 controls fan2 */
455 res
= data
->temp
[chan
+1] >=
456 AUTO_TEMP_MIN_FROM_REG_DEG(data
->auto_temp
[chan
+1]);
458 case 0x20: /* remote temp1 controls both fans */
461 AUTO_TEMP_MIN_FROM_REG_DEG(data
->auto_temp
[1]);
463 case 0x40: /* remote temp2 controls both fans */
466 AUTO_TEMP_MIN_FROM_REG_DEG(data
->auto_temp
[2]);
468 case 0x60: /* max controls both fans */
471 AUTO_TEMP_MIN_FROM_REG_DEG(data
->auto_temp
[0])
473 AUTO_TEMP_MIN_FROM_REG_DEG(data
->auto_temp
[1])
474 || (data
->chip_type
== adm1031
476 AUTO_TEMP_MIN_FROM_REG_DEG(data
->auto_temp
[2]));
480 res
= data
->pwm
[chan
] > 0;
486 static ssize_t
show_fan(struct device
*dev
, char *buf
, int nr
)
488 struct adm1031_data
*data
= adm1031_update_device(dev
);
491 value
= trust_fan_readings(data
, nr
) ? FAN_FROM_REG(data
->fan
[nr
],
492 FAN_DIV_FROM_REG(data
->fan_div
[nr
])) : 0;
493 return sprintf(buf
, "%d\n", value
);
496 static ssize_t
show_fan_div(struct device
*dev
, char *buf
, int nr
)
498 struct adm1031_data
*data
= adm1031_update_device(dev
);
499 return sprintf(buf
, "%d\n", FAN_DIV_FROM_REG(data
->fan_div
[nr
]));
501 static ssize_t
show_fan_min(struct device
*dev
, char *buf
, int nr
)
503 struct adm1031_data
*data
= adm1031_update_device(dev
);
504 return sprintf(buf
, "%d\n",
505 FAN_FROM_REG(data
->fan_min
[nr
],
506 FAN_DIV_FROM_REG(data
->fan_div
[nr
])));
509 set_fan_min(struct device
*dev
, const char *buf
, size_t count
, int nr
)
511 struct i2c_client
*client
= to_i2c_client(dev
);
512 struct adm1031_data
*data
= i2c_get_clientdata(client
);
513 int val
= simple_strtol(buf
, NULL
, 10);
515 mutex_lock(&data
->update_lock
);
518 FAN_TO_REG(val
, FAN_DIV_FROM_REG(data
->fan_div
[nr
]));
520 data
->fan_min
[nr
] = 0xff;
522 adm1031_write_value(client
, ADM1031_REG_FAN_MIN(nr
), data
->fan_min
[nr
]);
523 mutex_unlock(&data
->update_lock
);
527 set_fan_div(struct device
*dev
, const char *buf
, size_t count
, int nr
)
529 struct i2c_client
*client
= to_i2c_client(dev
);
530 struct adm1031_data
*data
= i2c_get_clientdata(client
);
531 int val
= simple_strtol(buf
, NULL
, 10);
536 tmp
= val
== 8 ? 0xc0 :
544 mutex_lock(&data
->update_lock
);
545 /* Get fresh readings */
546 data
->fan_div
[nr
] = adm1031_read_value(client
,
547 ADM1031_REG_FAN_DIV(nr
));
548 data
->fan_min
[nr
] = adm1031_read_value(client
,
549 ADM1031_REG_FAN_MIN(nr
));
551 /* Write the new clock divider and fan min */
552 old_div
= FAN_DIV_FROM_REG(data
->fan_div
[nr
]);
553 data
->fan_div
[nr
] = (tmp
& 0xC0) | (0x3f & data
->fan_div
[nr
]);
554 new_min
= data
->fan_min
[nr
] * old_div
/
555 FAN_DIV_FROM_REG(data
->fan_div
[nr
]);
556 data
->fan_min
[nr
] = new_min
> 0xff ? 0xff : new_min
;
558 adm1031_write_value(client
, ADM1031_REG_FAN_DIV(nr
),
560 adm1031_write_value(client
, ADM1031_REG_FAN_MIN(nr
),
563 /* Invalidate the cache: fan speed is no longer valid */
565 mutex_unlock(&data
->update_lock
);
569 #define fan_offset(offset) \
570 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
572 return show_fan(dev, buf, offset - 1); \
574 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
576 return show_fan_min(dev, buf, offset - 1); \
578 static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \
580 return show_fan_div(dev, buf, offset - 1); \
582 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
583 const char *buf, size_t count) \
585 return set_fan_min(dev, buf, count, offset - 1); \
587 static ssize_t set_fan_##offset##_div (struct device *dev, struct device_attribute *attr, \
588 const char *buf, size_t count) \
590 return set_fan_div(dev, buf, count, offset - 1); \
592 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
594 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
595 show_fan_##offset##_min, set_fan_##offset##_min); \
596 static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
597 show_fan_##offset##_div, set_fan_##offset##_div); \
598 static DEVICE_ATTR(auto_fan##offset##_min_pwm, S_IRUGO | S_IWUSR, \
599 show_pwm_##offset, set_pwm_##offset)
606 static ssize_t
show_temp(struct device
*dev
, char *buf
, int nr
)
608 struct adm1031_data
*data
= adm1031_update_device(dev
);
611 ((data
->ext_temp
[nr
] >> 6) & 0x3) * 2 :
612 (((data
->ext_temp
[nr
] >> ((nr
- 1) * 3)) & 7));
613 return sprintf(buf
, "%d\n", TEMP_FROM_REG_EXT(data
->temp
[nr
], ext
));
615 static ssize_t
show_temp_min(struct device
*dev
, char *buf
, int nr
)
617 struct adm1031_data
*data
= adm1031_update_device(dev
);
618 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_min
[nr
]));
620 static ssize_t
show_temp_max(struct device
*dev
, char *buf
, int nr
)
622 struct adm1031_data
*data
= adm1031_update_device(dev
);
623 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_max
[nr
]));
625 static ssize_t
show_temp_crit(struct device
*dev
, char *buf
, int nr
)
627 struct adm1031_data
*data
= adm1031_update_device(dev
);
628 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_crit
[nr
]));
631 set_temp_min(struct device
*dev
, const char *buf
, size_t count
, int nr
)
633 struct i2c_client
*client
= to_i2c_client(dev
);
634 struct adm1031_data
*data
= i2c_get_clientdata(client
);
637 val
= simple_strtol(buf
, NULL
, 10);
638 val
= SENSORS_LIMIT(val
, -55000, nr
== 0 ? 127750 : 127875);
639 mutex_lock(&data
->update_lock
);
640 data
->temp_min
[nr
] = TEMP_TO_REG(val
);
641 adm1031_write_value(client
, ADM1031_REG_TEMP_MIN(nr
),
643 mutex_unlock(&data
->update_lock
);
647 set_temp_max(struct device
*dev
, const char *buf
, size_t count
, int nr
)
649 struct i2c_client
*client
= to_i2c_client(dev
);
650 struct adm1031_data
*data
= i2c_get_clientdata(client
);
653 val
= simple_strtol(buf
, NULL
, 10);
654 val
= SENSORS_LIMIT(val
, -55000, nr
== 0 ? 127750 : 127875);
655 mutex_lock(&data
->update_lock
);
656 data
->temp_max
[nr
] = TEMP_TO_REG(val
);
657 adm1031_write_value(client
, ADM1031_REG_TEMP_MAX(nr
),
659 mutex_unlock(&data
->update_lock
);
663 set_temp_crit(struct device
*dev
, const char *buf
, size_t count
, int nr
)
665 struct i2c_client
*client
= to_i2c_client(dev
);
666 struct adm1031_data
*data
= i2c_get_clientdata(client
);
669 val
= simple_strtol(buf
, NULL
, 10);
670 val
= SENSORS_LIMIT(val
, -55000, nr
== 0 ? 127750 : 127875);
671 mutex_lock(&data
->update_lock
);
672 data
->temp_crit
[nr
] = TEMP_TO_REG(val
);
673 adm1031_write_value(client
, ADM1031_REG_TEMP_CRIT(nr
),
674 data
->temp_crit
[nr
]);
675 mutex_unlock(&data
->update_lock
);
679 #define temp_reg(offset) \
680 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
682 return show_temp(dev, buf, offset - 1); \
684 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
686 return show_temp_min(dev, buf, offset - 1); \
688 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
690 return show_temp_max(dev, buf, offset - 1); \
692 static ssize_t show_temp_##offset##_crit (struct device *dev, struct device_attribute *attr, char *buf) \
694 return show_temp_crit(dev, buf, offset - 1); \
696 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
697 const char *buf, size_t count) \
699 return set_temp_min(dev, buf, count, offset - 1); \
701 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
702 const char *buf, size_t count) \
704 return set_temp_max(dev, buf, count, offset - 1); \
706 static ssize_t set_temp_##offset##_crit (struct device *dev, struct device_attribute *attr, \
707 const char *buf, size_t count) \
709 return set_temp_crit(dev, buf, count, offset - 1); \
711 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
713 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
714 show_temp_##offset##_min, set_temp_##offset##_min); \
715 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
716 show_temp_##offset##_max, set_temp_##offset##_max); \
717 static DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR, \
718 show_temp_##offset##_crit, set_temp_##offset##_crit)
725 static ssize_t
show_alarms(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
727 struct adm1031_data
*data
= adm1031_update_device(dev
);
728 return sprintf(buf
, "%d\n", data
->alarm
);
731 static DEVICE_ATTR(alarms
, S_IRUGO
, show_alarms
, NULL
);
734 static int adm1031_attach_adapter(struct i2c_adapter
*adapter
)
736 if (!(adapter
->class & I2C_CLASS_HWMON
))
738 return i2c_probe(adapter
, &addr_data
, adm1031_detect
);
741 static struct attribute
*adm1031_attributes
[] = {
742 &dev_attr_fan1_input
.attr
,
743 &dev_attr_fan1_div
.attr
,
744 &dev_attr_fan1_min
.attr
,
746 &dev_attr_auto_fan1_channel
.attr
,
747 &dev_attr_temp1_input
.attr
,
748 &dev_attr_temp1_min
.attr
,
749 &dev_attr_temp1_max
.attr
,
750 &dev_attr_temp1_crit
.attr
,
751 &dev_attr_temp2_input
.attr
,
752 &dev_attr_temp2_min
.attr
,
753 &dev_attr_temp2_max
.attr
,
754 &dev_attr_temp2_crit
.attr
,
756 &dev_attr_auto_temp1_off
.attr
,
757 &dev_attr_auto_temp1_min
.attr
,
758 &dev_attr_auto_temp1_max
.attr
,
760 &dev_attr_auto_temp2_off
.attr
,
761 &dev_attr_auto_temp2_min
.attr
,
762 &dev_attr_auto_temp2_max
.attr
,
764 &dev_attr_auto_fan1_min_pwm
.attr
,
766 &dev_attr_alarms
.attr
,
771 static const struct attribute_group adm1031_group
= {
772 .attrs
= adm1031_attributes
,
775 static struct attribute
*adm1031_attributes_opt
[] = {
776 &dev_attr_fan2_input
.attr
,
777 &dev_attr_fan2_div
.attr
,
778 &dev_attr_fan2_min
.attr
,
780 &dev_attr_auto_fan2_channel
.attr
,
781 &dev_attr_temp3_input
.attr
,
782 &dev_attr_temp3_min
.attr
,
783 &dev_attr_temp3_max
.attr
,
784 &dev_attr_temp3_crit
.attr
,
785 &dev_attr_auto_temp3_off
.attr
,
786 &dev_attr_auto_temp3_min
.attr
,
787 &dev_attr_auto_temp3_max
.attr
,
788 &dev_attr_auto_fan2_min_pwm
.attr
,
792 static const struct attribute_group adm1031_group_opt
= {
793 .attrs
= adm1031_attributes_opt
,
796 /* This function is called by i2c_probe */
797 static int adm1031_detect(struct i2c_adapter
*adapter
, int address
, int kind
)
799 struct i2c_client
*new_client
;
800 struct adm1031_data
*data
;
802 const char *name
= "";
804 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
807 if (!(data
= kzalloc(sizeof(struct adm1031_data
), GFP_KERNEL
))) {
812 new_client
= &data
->client
;
813 i2c_set_clientdata(new_client
, data
);
814 new_client
->addr
= address
;
815 new_client
->adapter
= adapter
;
816 new_client
->driver
= &adm1031_driver
;
817 new_client
->flags
= 0;
821 id
= i2c_smbus_read_byte_data(new_client
, 0x3d);
822 co
= i2c_smbus_read_byte_data(new_client
, 0x3e);
824 if (!((id
== 0x31 || id
== 0x30) && co
== 0x41))
826 kind
= (id
== 0x30) ? adm1030
: adm1031
;
832 /* Given the detected chip type, set the chip name and the
833 * auto fan control helper table. */
834 if (kind
== adm1030
) {
836 data
->chan_select_table
= &auto_channel_select_table_adm1030
;
837 } else if (kind
== adm1031
) {
839 data
->chan_select_table
= &auto_channel_select_table_adm1031
;
841 data
->chip_type
= kind
;
843 strlcpy(new_client
->name
, name
, I2C_NAME_SIZE
);
845 mutex_init(&data
->update_lock
);
847 /* Tell the I2C layer a new client has arrived */
848 if ((err
= i2c_attach_client(new_client
)))
851 /* Initialize the ADM1031 chip */
852 adm1031_init_client(new_client
);
854 /* Register sysfs hooks */
855 if ((err
= sysfs_create_group(&new_client
->dev
.kobj
, &adm1031_group
)))
858 if (kind
== adm1031
) {
859 if ((err
= sysfs_create_group(&new_client
->dev
.kobj
,
860 &adm1031_group_opt
)))
864 data
->hwmon_dev
= hwmon_device_register(&new_client
->dev
);
865 if (IS_ERR(data
->hwmon_dev
)) {
866 err
= PTR_ERR(data
->hwmon_dev
);
873 sysfs_remove_group(&new_client
->dev
.kobj
, &adm1031_group
);
874 sysfs_remove_group(&new_client
->dev
.kobj
, &adm1031_group_opt
);
876 i2c_detach_client(new_client
);
883 static int adm1031_detach_client(struct i2c_client
*client
)
885 struct adm1031_data
*data
= i2c_get_clientdata(client
);
888 hwmon_device_unregister(data
->hwmon_dev
);
889 sysfs_remove_group(&client
->dev
.kobj
, &adm1031_group
);
890 sysfs_remove_group(&client
->dev
.kobj
, &adm1031_group_opt
);
891 if ((ret
= i2c_detach_client(client
)) != 0) {
898 static void adm1031_init_client(struct i2c_client
*client
)
900 unsigned int read_val
;
902 struct adm1031_data
*data
= i2c_get_clientdata(client
);
904 mask
= (ADM1031_CONF2_PWM1_ENABLE
| ADM1031_CONF2_TACH1_ENABLE
);
905 if (data
->chip_type
== adm1031
) {
906 mask
|= (ADM1031_CONF2_PWM2_ENABLE
|
907 ADM1031_CONF2_TACH2_ENABLE
);
909 /* Initialize the ADM1031 chip (enables fan speed reading ) */
910 read_val
= adm1031_read_value(client
, ADM1031_REG_CONF2
);
911 if ((read_val
| mask
) != read_val
) {
912 adm1031_write_value(client
, ADM1031_REG_CONF2
, read_val
| mask
);
915 read_val
= adm1031_read_value(client
, ADM1031_REG_CONF1
);
916 if ((read_val
| ADM1031_CONF1_MONITOR_ENABLE
) != read_val
) {
917 adm1031_write_value(client
, ADM1031_REG_CONF1
, read_val
|
918 ADM1031_CONF1_MONITOR_ENABLE
);
923 static struct adm1031_data
*adm1031_update_device(struct device
*dev
)
925 struct i2c_client
*client
= to_i2c_client(dev
);
926 struct adm1031_data
*data
= i2c_get_clientdata(client
);
929 mutex_lock(&data
->update_lock
);
931 if (time_after(jiffies
, data
->last_updated
+ HZ
+ HZ
/ 2)
934 dev_dbg(&client
->dev
, "Starting adm1031 update\n");
936 chan
< ((data
->chip_type
== adm1031
) ? 3 : 2); chan
++) {
940 adm1031_read_value(client
, ADM1031_REG_TEMP(chan
));
941 data
->ext_temp
[chan
] =
942 adm1031_read_value(client
, ADM1031_REG_EXT_TEMP
);
944 adm1031_read_value(client
, ADM1031_REG_TEMP(chan
));
946 data
->ext_temp
[chan
] =
947 adm1031_read_value(client
,
948 ADM1031_REG_EXT_TEMP
);
951 adm1031_read_value(client
,
952 ADM1031_REG_TEMP(chan
));
954 /* oldh is actually newer */
956 dev_warn(&client
->dev
,
957 "Remote temperature may be "
961 data
->temp
[chan
] = newh
;
963 data
->temp_min
[chan
] =
964 adm1031_read_value(client
,
965 ADM1031_REG_TEMP_MIN(chan
));
966 data
->temp_max
[chan
] =
967 adm1031_read_value(client
,
968 ADM1031_REG_TEMP_MAX(chan
));
969 data
->temp_crit
[chan
] =
970 adm1031_read_value(client
,
971 ADM1031_REG_TEMP_CRIT(chan
));
972 data
->auto_temp
[chan
] =
973 adm1031_read_value(client
,
974 ADM1031_REG_AUTO_TEMP(chan
));
978 data
->conf1
= adm1031_read_value(client
, ADM1031_REG_CONF1
);
979 data
->conf2
= adm1031_read_value(client
, ADM1031_REG_CONF2
);
981 data
->alarm
= adm1031_read_value(client
, ADM1031_REG_STATUS(0))
982 | (adm1031_read_value(client
, ADM1031_REG_STATUS(1))
984 if (data
->chip_type
== adm1030
) {
985 data
->alarm
&= 0xc0ff;
988 for (chan
=0; chan
<(data
->chip_type
== adm1030
? 1 : 2); chan
++) {
989 data
->fan_div
[chan
] =
990 adm1031_read_value(client
, ADM1031_REG_FAN_DIV(chan
));
991 data
->fan_min
[chan
] =
992 adm1031_read_value(client
, ADM1031_REG_FAN_MIN(chan
));
994 adm1031_read_value(client
, ADM1031_REG_FAN_SPEED(chan
));
996 0xf & (adm1031_read_value(client
, ADM1031_REG_PWM
) >>
999 data
->last_updated
= jiffies
;
1003 mutex_unlock(&data
->update_lock
);
1008 static int __init
sensors_adm1031_init(void)
1010 return i2c_add_driver(&adm1031_driver
);
1013 static void __exit
sensors_adm1031_exit(void)
1015 i2c_del_driver(&adm1031_driver
);
1018 MODULE_AUTHOR("Alexandre d'Alton <alex@alexdalton.org>");
1019 MODULE_DESCRIPTION("ADM1031/ADM1030 driver");
1020 MODULE_LICENSE("GPL");
1022 module_init(sensors_adm1031_init
);
1023 module_exit(sensors_adm1031_exit
);