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) (0x0a + (nr))
44 #define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr))
46 #define ADM1031_REG_STATUS(nr) (0x2 + (nr))
48 #define ADM1031_REG_CONF1 0x00
49 #define ADM1031_REG_CONF2 0x01
50 #define ADM1031_REG_EXT_TEMP 0x06
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 const 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 const 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 const auto_chan_table_t auto_channel_select_table_adm1030 = {
198 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
199 { 2 /* 0b10 */ , 0 },
200 { 0xff /* invalid */ , 0 },
201 { 0xff /* invalid */ , 0 },
202 { 3 /* 0b11 */ , 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
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 data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1);
273 if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) ^
274 (old_fan_mode & ADM1031_CONF1_AUTO_MODE)) {
275 if (data->conf1 & ADM1031_CONF1_AUTO_MODE){
276 /* Switch to Auto Fan Mode
278 * Set PWM registers to 33% Both */
279 data->old_pwm[0] = data->pwm[0];
280 data->old_pwm[1] = data->pwm[1];
281 adm1031_write_value(client, ADM1031_REG_PWM, 0x55);
283 /* Switch to Manual Mode */
284 data->pwm[0] = data->old_pwm[0];
285 data->pwm[1] = data->old_pwm[1];
286 /* Restore PWM registers */
287 adm1031_write_value(client, ADM1031_REG_PWM,
288 data->pwm[0] | (data->pwm[1] << 4));
291 data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1);
292 adm1031_write_value(client, ADM1031_REG_CONF1, data->conf1);
293 mutex_unlock(&data->update_lock);
297 #define fan_auto_channel_offset(offset) \
298 static ssize_t show_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
300 return show_fan_auto_channel(dev, buf, offset - 1); \
302 static ssize_t set_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, \
303 const char *buf, size_t count) \
305 return set_fan_auto_channel(dev, buf, count, offset - 1); \
307 static DEVICE_ATTR(auto_fan##offset##_channel, S_IRUGO | S_IWUSR, \
308 show_fan_auto_channel_##offset, \
309 set_fan_auto_channel_##offset)
311 fan_auto_channel_offset(1);
312 fan_auto_channel_offset(2);
315 static ssize_t show_auto_temp_off(struct device *dev, char *buf, int nr)
317 struct adm1031_data *data = adm1031_update_device(dev);
318 return sprintf(buf, "%d\n",
319 AUTO_TEMP_OFF_FROM_REG(data->auto_temp[nr]));
321 static ssize_t show_auto_temp_min(struct device *dev, char *buf, int nr)
323 struct adm1031_data *data = adm1031_update_device(dev);
324 return sprintf(buf, "%d\n",
325 AUTO_TEMP_MIN_FROM_REG(data->auto_temp[nr]));
328 set_auto_temp_min(struct device *dev, const char *buf, size_t count, int nr)
330 struct i2c_client *client = to_i2c_client(dev);
331 struct adm1031_data *data = i2c_get_clientdata(client);
332 int val = simple_strtol(buf, NULL, 10);
334 mutex_lock(&data->update_lock);
335 data->auto_temp[nr] = AUTO_TEMP_MIN_TO_REG(val, data->auto_temp[nr]);
336 adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
337 data->auto_temp[nr]);
338 mutex_unlock(&data->update_lock);
341 static ssize_t show_auto_temp_max(struct device *dev, char *buf, int nr)
343 struct adm1031_data *data = adm1031_update_device(dev);
344 return sprintf(buf, "%d\n",
345 AUTO_TEMP_MAX_FROM_REG(data->auto_temp[nr]));
348 set_auto_temp_max(struct device *dev, const char *buf, size_t count, int nr)
350 struct i2c_client *client = to_i2c_client(dev);
351 struct adm1031_data *data = i2c_get_clientdata(client);
352 int val = simple_strtol(buf, NULL, 10);
354 mutex_lock(&data->update_lock);
355 data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr], data->pwm[nr]);
356 adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
358 mutex_unlock(&data->update_lock);
362 #define auto_temp_reg(offset) \
363 static ssize_t show_auto_temp_##offset##_off (struct device *dev, struct device_attribute *attr, char *buf) \
365 return show_auto_temp_off(dev, buf, offset - 1); \
367 static ssize_t show_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
369 return show_auto_temp_min(dev, buf, offset - 1); \
371 static ssize_t show_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
373 return show_auto_temp_max(dev, buf, offset - 1); \
375 static ssize_t set_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
376 const char *buf, size_t count) \
378 return set_auto_temp_min(dev, buf, count, offset - 1); \
380 static ssize_t set_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
381 const char *buf, size_t count) \
383 return set_auto_temp_max(dev, buf, count, offset - 1); \
385 static DEVICE_ATTR(auto_temp##offset##_off, S_IRUGO, \
386 show_auto_temp_##offset##_off, NULL); \
387 static DEVICE_ATTR(auto_temp##offset##_min, S_IRUGO | S_IWUSR, \
388 show_auto_temp_##offset##_min, set_auto_temp_##offset##_min);\
389 static DEVICE_ATTR(auto_temp##offset##_max, S_IRUGO | S_IWUSR, \
390 show_auto_temp_##offset##_max, set_auto_temp_##offset##_max)
397 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
399 struct adm1031_data *data = adm1031_update_device(dev);
400 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
403 set_pwm(struct device *dev, const char *buf, size_t count, int nr)
405 struct i2c_client *client = to_i2c_client(dev);
406 struct adm1031_data *data = i2c_get_clientdata(client);
407 int val = simple_strtol(buf, NULL, 10);
410 mutex_lock(&data->update_lock);
411 if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) &&
412 (((val>>4) & 0xf) != 5)) {
413 /* In automatic mode, the only PWM accepted is 33% */
414 mutex_unlock(&data->update_lock);
417 data->pwm[nr] = PWM_TO_REG(val);
418 reg = adm1031_read_value(client, ADM1031_REG_PWM);
419 adm1031_write_value(client, ADM1031_REG_PWM,
420 nr ? ((data->pwm[nr] << 4) & 0xf0) | (reg & 0xf)
421 : (data->pwm[nr] & 0xf) | (reg & 0xf0));
422 mutex_unlock(&data->update_lock);
426 #define pwm_reg(offset) \
427 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
429 return show_pwm(dev, buf, offset - 1); \
431 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \
432 const char *buf, size_t count) \
434 return set_pwm(dev, buf, count, offset - 1); \
436 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
437 show_pwm_##offset, set_pwm_##offset)
445 * That function checks the cases where the fan reading is not
446 * relevant. It is used to provide 0 as fan reading when the fan is
447 * not supposed to run
449 static int trust_fan_readings(struct adm1031_data *data, int chan)
453 if (data->conf1 & ADM1031_CONF1_AUTO_MODE) {
454 switch (data->conf1 & 0x60) {
455 case 0x00: /* remote temp1 controls fan1 remote temp2 controls fan2 */
456 res = data->temp[chan+1] >=
457 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]);
459 case 0x20: /* remote temp1 controls both fans */
462 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]);
464 case 0x40: /* remote temp2 controls both fans */
467 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]);
469 case 0x60: /* max controls both fans */
472 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[0])
474 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1])
475 || (data->chip_type == adm1031
477 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]));
481 res = data->pwm[chan] > 0;
487 static ssize_t show_fan(struct device *dev, char *buf, int nr)
489 struct adm1031_data *data = adm1031_update_device(dev);
492 value = trust_fan_readings(data, nr) ? FAN_FROM_REG(data->fan[nr],
493 FAN_DIV_FROM_REG(data->fan_div[nr])) : 0;
494 return sprintf(buf, "%d\n", value);
497 static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
499 struct adm1031_data *data = adm1031_update_device(dev);
500 return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[nr]));
502 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
504 struct adm1031_data *data = adm1031_update_device(dev);
505 return sprintf(buf, "%d\n",
506 FAN_FROM_REG(data->fan_min[nr],
507 FAN_DIV_FROM_REG(data->fan_div[nr])));
510 set_fan_min(struct device *dev, const char *buf, size_t count, int nr)
512 struct i2c_client *client = to_i2c_client(dev);
513 struct adm1031_data *data = i2c_get_clientdata(client);
514 int val = simple_strtol(buf, NULL, 10);
516 mutex_lock(&data->update_lock);
519 FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr]));
521 data->fan_min[nr] = 0xff;
523 adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), data->fan_min[nr]);
524 mutex_unlock(&data->update_lock);
528 set_fan_div(struct device *dev, const char *buf, size_t count, int nr)
530 struct i2c_client *client = to_i2c_client(dev);
531 struct adm1031_data *data = i2c_get_clientdata(client);
532 int val = simple_strtol(buf, NULL, 10);
537 tmp = val == 8 ? 0xc0 :
545 mutex_lock(&data->update_lock);
546 /* Get fresh readings */
547 data->fan_div[nr] = adm1031_read_value(client,
548 ADM1031_REG_FAN_DIV(nr));
549 data->fan_min[nr] = adm1031_read_value(client,
550 ADM1031_REG_FAN_MIN(nr));
552 /* Write the new clock divider and fan min */
553 old_div = FAN_DIV_FROM_REG(data->fan_div[nr]);
554 data->fan_div[nr] = tmp | (0x3f & data->fan_div[nr]);
555 new_min = data->fan_min[nr] * old_div / val;
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 *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 client = &data->client;
813 i2c_set_clientdata(client, data);
814 client->addr = address;
815 client->adapter = adapter;
816 client->driver = &adm1031_driver;
820 id = i2c_smbus_read_byte_data(client, 0x3d);
821 co = i2c_smbus_read_byte_data(client, 0x3e);
823 if (!((id == 0x31 || id == 0x30) && co == 0x41))
825 kind = (id == 0x30) ? adm1030 : adm1031;
831 /* Given the detected chip type, set the chip name and the
832 * auto fan control helper table. */
833 if (kind == adm1030) {
835 data->chan_select_table = &auto_channel_select_table_adm1030;
836 } else if (kind == adm1031) {
838 data->chan_select_table = &auto_channel_select_table_adm1031;
840 data->chip_type = kind;
842 strlcpy(client->name, name, I2C_NAME_SIZE);
843 mutex_init(&data->update_lock);
845 /* Tell the I2C layer a new client has arrived */
846 if ((err = i2c_attach_client(client)))
849 /* Initialize the ADM1031 chip */
850 adm1031_init_client(client);
852 /* Register sysfs hooks */
853 if ((err = sysfs_create_group(&client->dev.kobj, &adm1031_group)))
856 if (kind == adm1031) {
857 if ((err = sysfs_create_group(&client->dev.kobj,
858 &adm1031_group_opt)))
862 data->hwmon_dev = hwmon_device_register(&client->dev);
863 if (IS_ERR(data->hwmon_dev)) {
864 err = PTR_ERR(data->hwmon_dev);
871 sysfs_remove_group(&client->dev.kobj, &adm1031_group);
872 sysfs_remove_group(&client->dev.kobj, &adm1031_group_opt);
874 i2c_detach_client(client);
881 static int adm1031_detach_client(struct i2c_client *client)
883 struct adm1031_data *data = i2c_get_clientdata(client);
886 hwmon_device_unregister(data->hwmon_dev);
887 sysfs_remove_group(&client->dev.kobj, &adm1031_group);
888 sysfs_remove_group(&client->dev.kobj, &adm1031_group_opt);
889 if ((ret = i2c_detach_client(client)) != 0) {
896 static void adm1031_init_client(struct i2c_client *client)
898 unsigned int read_val;
900 struct adm1031_data *data = i2c_get_clientdata(client);
902 mask = (ADM1031_CONF2_PWM1_ENABLE | ADM1031_CONF2_TACH1_ENABLE);
903 if (data->chip_type == adm1031) {
904 mask |= (ADM1031_CONF2_PWM2_ENABLE |
905 ADM1031_CONF2_TACH2_ENABLE);
907 /* Initialize the ADM1031 chip (enables fan speed reading ) */
908 read_val = adm1031_read_value(client, ADM1031_REG_CONF2);
909 if ((read_val | mask) != read_val) {
910 adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask);
913 read_val = adm1031_read_value(client, ADM1031_REG_CONF1);
914 if ((read_val | ADM1031_CONF1_MONITOR_ENABLE) != read_val) {
915 adm1031_write_value(client, ADM1031_REG_CONF1, read_val |
916 ADM1031_CONF1_MONITOR_ENABLE);
921 static struct adm1031_data *adm1031_update_device(struct device *dev)
923 struct i2c_client *client = to_i2c_client(dev);
924 struct adm1031_data *data = i2c_get_clientdata(client);
927 mutex_lock(&data->update_lock);
929 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
932 dev_dbg(&client->dev, "Starting adm1031 update\n");
934 chan < ((data->chip_type == adm1031) ? 3 : 2); chan++) {
938 adm1031_read_value(client, ADM1031_REG_TEMP(chan));
939 data->ext_temp[chan] =
940 adm1031_read_value(client, ADM1031_REG_EXT_TEMP);
942 adm1031_read_value(client, ADM1031_REG_TEMP(chan));
944 data->ext_temp[chan] =
945 adm1031_read_value(client,
946 ADM1031_REG_EXT_TEMP);
949 adm1031_read_value(client,
950 ADM1031_REG_TEMP(chan));
952 /* oldh is actually newer */
954 dev_warn(&client->dev,
955 "Remote temperature may be "
959 data->temp[chan] = newh;
961 data->temp_min[chan] =
962 adm1031_read_value(client,
963 ADM1031_REG_TEMP_MIN(chan));
964 data->temp_max[chan] =
965 adm1031_read_value(client,
966 ADM1031_REG_TEMP_MAX(chan));
967 data->temp_crit[chan] =
968 adm1031_read_value(client,
969 ADM1031_REG_TEMP_CRIT(chan));
970 data->auto_temp[chan] =
971 adm1031_read_value(client,
972 ADM1031_REG_AUTO_TEMP(chan));
976 data->conf1 = adm1031_read_value(client, ADM1031_REG_CONF1);
977 data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2);
979 data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0))
980 | (adm1031_read_value(client, ADM1031_REG_STATUS(1))
982 if (data->chip_type == adm1030) {
983 data->alarm &= 0xc0ff;
986 for (chan=0; chan<(data->chip_type == adm1030 ? 1 : 2); chan++) {
987 data->fan_div[chan] =
988 adm1031_read_value(client, ADM1031_REG_FAN_DIV(chan));
989 data->fan_min[chan] =
990 adm1031_read_value(client, ADM1031_REG_FAN_MIN(chan));
992 adm1031_read_value(client, ADM1031_REG_FAN_SPEED(chan));
994 0xf & (adm1031_read_value(client, ADM1031_REG_PWM) >>
997 data->last_updated = jiffies;
1001 mutex_unlock(&data->update_lock);
1006 static int __init sensors_adm1031_init(void)
1008 return i2c_add_driver(&adm1031_driver);
1011 static void __exit sensors_adm1031_exit(void)
1013 i2c_del_driver(&adm1031_driver);
1016 MODULE_AUTHOR("Alexandre d'Alton <alex@alexdalton.org>");
1017 MODULE_DESCRIPTION("ADM1031/ADM1030 driver");
1018 MODULE_LICENSE("GPL");
1020 module_init(sensors_adm1031_init);
1021 module_exit(sensors_adm1031_exit);