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>
32 /* Following macros takes channel parameter starting from 0 to 2 */
33 #define ADM1031_REG_FAN_SPEED(nr) (0x08 + (nr))
34 #define ADM1031_REG_FAN_DIV(nr) (0x20 + (nr))
35 #define ADM1031_REG_PWM (0x22)
36 #define ADM1031_REG_FAN_MIN(nr) (0x10 + (nr))
38 #define ADM1031_REG_TEMP_MAX(nr) (0x14 + 4*(nr))
39 #define ADM1031_REG_TEMP_MIN(nr) (0x15 + 4*(nr))
40 #define ADM1031_REG_TEMP_CRIT(nr) (0x16 + 4*(nr))
42 #define ADM1031_REG_TEMP(nr) (0xa + (nr))
43 #define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr))
45 #define ADM1031_REG_STATUS(nr) (0x2 + (nr))
47 #define ADM1031_REG_CONF1 0x0
48 #define ADM1031_REG_CONF2 0x1
49 #define ADM1031_REG_EXT_TEMP 0x6
51 #define ADM1031_CONF1_MONITOR_ENABLE 0x01 /* Monitoring enable */
52 #define ADM1031_CONF1_PWM_INVERT 0x08 /* PWM Invert */
53 #define ADM1031_CONF1_AUTO_MODE 0x80 /* Auto FAN */
55 #define ADM1031_CONF2_PWM1_ENABLE 0x01
56 #define ADM1031_CONF2_PWM2_ENABLE 0x02
57 #define ADM1031_CONF2_TACH1_ENABLE 0x04
58 #define ADM1031_CONF2_TACH2_ENABLE 0x08
59 #define ADM1031_CONF2_TEMP_ENABLE(chan) (0x10 << (chan))
61 /* Addresses to scan */
62 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
64 /* Insmod parameters */
65 I2C_CLIENT_INSMOD_2(adm1030, adm1031);
67 typedef u8 auto_chan_table_t[8][2];
69 /* Each client has this additional data */
71 struct i2c_client client;
72 struct class_device *class_dev;
73 struct semaphore update_lock;
75 char valid; /* !=0 if following fields are valid */
76 unsigned long last_updated; /* In jiffies */
77 /* The chan_select_table contains the possible configurations for
80 auto_chan_table_t *chan_select_table;
100 static int adm1031_attach_adapter(struct i2c_adapter *adapter);
101 static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind);
102 static void adm1031_init_client(struct i2c_client *client);
103 static int adm1031_detach_client(struct i2c_client *client);
104 static struct adm1031_data *adm1031_update_device(struct device *dev);
106 /* This is the driver that will be inserted */
107 static struct i2c_driver adm1031_driver = {
108 .owner = THIS_MODULE,
110 .attach_adapter = adm1031_attach_adapter,
111 .detach_client = adm1031_detach_client,
114 static inline u8 adm1031_read_value(struct i2c_client *client, u8 reg)
116 return i2c_smbus_read_byte_data(client, reg);
120 adm1031_write_value(struct i2c_client *client, u8 reg, unsigned int value)
122 return i2c_smbus_write_byte_data(client, reg, value);
126 #define TEMP_TO_REG(val) (((val) < 0 ? ((val - 500) / 1000) : \
127 ((val + 500) / 1000)))
129 #define TEMP_FROM_REG(val) ((val) * 1000)
131 #define TEMP_FROM_REG_EXT(val, ext) (TEMP_FROM_REG(val) + (ext) * 125)
133 #define FAN_FROM_REG(reg, div) ((reg) ? (11250 * 60) / ((reg) * (div)) : 0)
135 static int FAN_TO_REG(int reg, int div)
138 tmp = FAN_FROM_REG(SENSORS_LIMIT(reg, 0, 65535), div);
139 return tmp > 255 ? 255 : tmp;
142 #define FAN_DIV_FROM_REG(reg) (1<<(((reg)&0xc0)>>6))
144 #define PWM_TO_REG(val) (SENSORS_LIMIT((val), 0, 255) >> 4)
145 #define PWM_FROM_REG(val) ((val) << 4)
147 #define FAN_CHAN_FROM_REG(reg) (((reg) >> 5) & 7)
148 #define FAN_CHAN_TO_REG(val, reg) \
149 (((reg) & 0x1F) | (((val) << 5) & 0xe0))
151 #define AUTO_TEMP_MIN_TO_REG(val, reg) \
152 ((((val)/500) & 0xf8)|((reg) & 0x7))
153 #define AUTO_TEMP_RANGE_FROM_REG(reg) (5000 * (1<< ((reg)&0x7)))
154 #define AUTO_TEMP_MIN_FROM_REG(reg) (1000 * ((((reg) >> 3) & 0x1f) << 2))
156 #define AUTO_TEMP_MIN_FROM_REG_DEG(reg) ((((reg) >> 3) & 0x1f) << 2)
158 #define AUTO_TEMP_OFF_FROM_REG(reg) \
159 (AUTO_TEMP_MIN_FROM_REG(reg) - 5000)
161 #define AUTO_TEMP_MAX_FROM_REG(reg) \
162 (AUTO_TEMP_RANGE_FROM_REG(reg) + \
163 AUTO_TEMP_MIN_FROM_REG(reg))
165 static int AUTO_TEMP_MAX_TO_REG(int val, int reg, int pwm)
168 int range = val - AUTO_TEMP_MIN_FROM_REG(reg);
170 range = ((val - AUTO_TEMP_MIN_FROM_REG(reg))*10)/(16 - pwm);
171 ret = ((reg & 0xf8) |
174 range < 40000 ? 2 : range < 80000 ? 3 : 4));
178 /* FAN auto control */
179 #define GET_FAN_AUTO_BITFIELD(data, idx) \
180 (*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx%2]
182 /* The tables below contains the possible values for the auto fan
183 * control bitfields. the index in the table is the register value.
184 * MSb is the auto fan control enable bit, so the four first entries
185 * in the table disables auto fan control when both bitfields are zero.
187 static auto_chan_table_t auto_channel_select_table_adm1031 = {
188 {0, 0}, {0, 0}, {0, 0}, {0, 0},
189 {2 /*0b010 */ , 4 /*0b100 */ },
190 {2 /*0b010 */ , 2 /*0b010 */ },
191 {4 /*0b100 */ , 4 /*0b100 */ },
192 {7 /*0b111 */ , 7 /*0b111 */ },
195 static auto_chan_table_t auto_channel_select_table_adm1030 = {
196 {0, 0}, {0, 0}, {0, 0}, {0, 0},
198 {0xff /*invalid */ , 0},
199 {0xff /*invalid */ , 0},
203 /* That function checks if a bitfield is valid and returns the other bitfield
204 * nearest match if no exact match where found.
207 get_fan_auto_nearest(struct adm1031_data *data,
208 int chan, u8 val, u8 reg, u8 * new_reg)
211 int first_match = -1, exact_match = -1;
213 (*data->chan_select_table)[FAN_CHAN_FROM_REG(reg)][chan ? 0 : 1];
220 for (i = 0; i < 8; i++) {
221 if ((val == (*data->chan_select_table)[i][chan]) &&
222 ((*data->chan_select_table)[i][chan ? 0 : 1] ==
224 /* We found an exact match */
227 } else if (val == (*data->chan_select_table)[i][chan] &&
229 /* Save the first match in case of an exact match has not been
236 if (exact_match >= 0) {
237 *new_reg = exact_match;
238 } else if (first_match >= 0) {
239 *new_reg = first_match;
246 static ssize_t show_fan_auto_channel(struct device *dev, char *buf, int nr)
248 struct adm1031_data *data = adm1031_update_device(dev);
249 return sprintf(buf, "%d\n", GET_FAN_AUTO_BITFIELD(data, nr));
253 set_fan_auto_channel(struct device *dev, const char *buf, size_t count, int nr)
255 struct i2c_client *client = to_i2c_client(dev);
256 struct adm1031_data *data = i2c_get_clientdata(client);
257 int val = simple_strtol(buf, NULL, 10);
262 old_fan_mode = data->conf1;
264 down(&data->update_lock);
266 if ((ret = get_fan_auto_nearest(data, nr, val, data->conf1, ®))) {
267 up(&data->update_lock);
270 if (((data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1)) & ADM1031_CONF1_AUTO_MODE) ^
271 (old_fan_mode & ADM1031_CONF1_AUTO_MODE)) {
272 if (data->conf1 & ADM1031_CONF1_AUTO_MODE){
273 /* Switch to Auto Fan Mode
275 * Set PWM registers to 33% Both */
276 data->old_pwm[0] = data->pwm[0];
277 data->old_pwm[1] = data->pwm[1];
278 adm1031_write_value(client, ADM1031_REG_PWM, 0x55);
280 /* Switch to Manual Mode */
281 data->pwm[0] = data->old_pwm[0];
282 data->pwm[1] = data->old_pwm[1];
283 /* Restore PWM registers */
284 adm1031_write_value(client, ADM1031_REG_PWM,
285 data->pwm[0] | (data->pwm[1] << 4));
288 data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1);
289 adm1031_write_value(client, ADM1031_REG_CONF1, data->conf1);
290 up(&data->update_lock);
294 #define fan_auto_channel_offset(offset) \
295 static ssize_t show_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
297 return show_fan_auto_channel(dev, buf, offset - 1); \
299 static ssize_t set_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, \
300 const char *buf, size_t count) \
302 return set_fan_auto_channel(dev, buf, count, offset - 1); \
304 static DEVICE_ATTR(auto_fan##offset##_channel, S_IRUGO | S_IWUSR, \
305 show_fan_auto_channel_##offset, \
306 set_fan_auto_channel_##offset)
308 fan_auto_channel_offset(1);
309 fan_auto_channel_offset(2);
312 static ssize_t show_auto_temp_off(struct device *dev, char *buf, int nr)
314 struct adm1031_data *data = adm1031_update_device(dev);
315 return sprintf(buf, "%d\n",
316 AUTO_TEMP_OFF_FROM_REG(data->auto_temp[nr]));
318 static ssize_t show_auto_temp_min(struct device *dev, char *buf, int nr)
320 struct adm1031_data *data = adm1031_update_device(dev);
321 return sprintf(buf, "%d\n",
322 AUTO_TEMP_MIN_FROM_REG(data->auto_temp[nr]));
325 set_auto_temp_min(struct device *dev, const char *buf, size_t count, int nr)
327 struct i2c_client *client = to_i2c_client(dev);
328 struct adm1031_data *data = i2c_get_clientdata(client);
329 int val = simple_strtol(buf, NULL, 10);
331 down(&data->update_lock);
332 data->auto_temp[nr] = AUTO_TEMP_MIN_TO_REG(val, data->auto_temp[nr]);
333 adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
334 data->auto_temp[nr]);
335 up(&data->update_lock);
338 static ssize_t show_auto_temp_max(struct device *dev, char *buf, int nr)
340 struct adm1031_data *data = adm1031_update_device(dev);
341 return sprintf(buf, "%d\n",
342 AUTO_TEMP_MAX_FROM_REG(data->auto_temp[nr]));
345 set_auto_temp_max(struct device *dev, const char *buf, size_t count, int nr)
347 struct i2c_client *client = to_i2c_client(dev);
348 struct adm1031_data *data = i2c_get_clientdata(client);
349 int val = simple_strtol(buf, NULL, 10);
351 down(&data->update_lock);
352 data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr], data->pwm[nr]);
353 adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
355 up(&data->update_lock);
359 #define auto_temp_reg(offset) \
360 static ssize_t show_auto_temp_##offset##_off (struct device *dev, struct device_attribute *attr, char *buf) \
362 return show_auto_temp_off(dev, buf, offset - 1); \
364 static ssize_t show_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
366 return show_auto_temp_min(dev, buf, offset - 1); \
368 static ssize_t show_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
370 return show_auto_temp_max(dev, buf, offset - 1); \
372 static ssize_t set_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
373 const char *buf, size_t count) \
375 return set_auto_temp_min(dev, buf, count, offset - 1); \
377 static ssize_t set_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
378 const char *buf, size_t count) \
380 return set_auto_temp_max(dev, buf, count, offset - 1); \
382 static DEVICE_ATTR(auto_temp##offset##_off, S_IRUGO, \
383 show_auto_temp_##offset##_off, NULL); \
384 static DEVICE_ATTR(auto_temp##offset##_min, S_IRUGO | S_IWUSR, \
385 show_auto_temp_##offset##_min, set_auto_temp_##offset##_min);\
386 static DEVICE_ATTR(auto_temp##offset##_max, S_IRUGO | S_IWUSR, \
387 show_auto_temp_##offset##_max, set_auto_temp_##offset##_max)
394 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
396 struct adm1031_data *data = adm1031_update_device(dev);
397 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
400 set_pwm(struct device *dev, const char *buf, size_t count, int nr)
402 struct i2c_client *client = to_i2c_client(dev);
403 struct adm1031_data *data = i2c_get_clientdata(client);
404 int val = simple_strtol(buf, NULL, 10);
407 down(&data->update_lock);
408 if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) &&
409 (((val>>4) & 0xf) != 5)) {
410 /* In automatic mode, the only PWM accepted is 33% */
411 up(&data->update_lock);
414 data->pwm[nr] = PWM_TO_REG(val);
415 reg = adm1031_read_value(client, ADM1031_REG_PWM);
416 adm1031_write_value(client, ADM1031_REG_PWM,
417 nr ? ((data->pwm[nr] << 4) & 0xf0) | (reg & 0xf)
418 : (data->pwm[nr] & 0xf) | (reg & 0xf0));
419 up(&data->update_lock);
423 #define pwm_reg(offset) \
424 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
426 return show_pwm(dev, buf, offset - 1); \
428 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \
429 const char *buf, size_t count) \
431 return set_pwm(dev, buf, count, offset - 1); \
433 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
434 show_pwm_##offset, set_pwm_##offset)
442 * That function checks the cases where the fan reading is not
443 * relevant. It is used to provide 0 as fan reading when the fan is
444 * not supposed to run
446 static int trust_fan_readings(struct adm1031_data *data, int chan)
450 if (data->conf1 & ADM1031_CONF1_AUTO_MODE) {
451 switch (data->conf1 & 0x60) {
452 case 0x00: /* remote temp1 controls fan1 remote temp2 controls fan2 */
453 res = data->temp[chan+1] >=
454 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]);
456 case 0x20: /* remote temp1 controls both fans */
459 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]);
461 case 0x40: /* remote temp2 controls both fans */
464 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]);
466 case 0x60: /* max controls both fans */
469 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[0])
471 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1])
472 || (data->chip_type == adm1031
474 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]));
478 res = data->pwm[chan] > 0;
484 static ssize_t show_fan(struct device *dev, char *buf, int nr)
486 struct adm1031_data *data = adm1031_update_device(dev);
489 value = trust_fan_readings(data, nr) ? FAN_FROM_REG(data->fan[nr],
490 FAN_DIV_FROM_REG(data->fan_div[nr])) : 0;
491 return sprintf(buf, "%d\n", value);
494 static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
496 struct adm1031_data *data = adm1031_update_device(dev);
497 return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[nr]));
499 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
501 struct adm1031_data *data = adm1031_update_device(dev);
502 return sprintf(buf, "%d\n",
503 FAN_FROM_REG(data->fan_min[nr],
504 FAN_DIV_FROM_REG(data->fan_div[nr])));
507 set_fan_min(struct device *dev, const char *buf, size_t count, int nr)
509 struct i2c_client *client = to_i2c_client(dev);
510 struct adm1031_data *data = i2c_get_clientdata(client);
511 int val = simple_strtol(buf, NULL, 10);
513 down(&data->update_lock);
516 FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr]));
518 data->fan_min[nr] = 0xff;
520 adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), data->fan_min[nr]);
521 up(&data->update_lock);
525 set_fan_div(struct device *dev, const char *buf, size_t count, int nr)
527 struct i2c_client *client = to_i2c_client(dev);
528 struct adm1031_data *data = i2c_get_clientdata(client);
529 int val = simple_strtol(buf, NULL, 10);
534 tmp = val == 8 ? 0xc0 :
542 down(&data->update_lock);
543 old_div = FAN_DIV_FROM_REG(data->fan_div[nr]);
544 data->fan_div[nr] = (tmp & 0xC0) | (0x3f & data->fan_div[nr]);
545 new_min = data->fan_min[nr] * old_div /
546 FAN_DIV_FROM_REG(data->fan_div[nr]);
547 data->fan_min[nr] = new_min > 0xff ? 0xff : new_min;
548 data->fan[nr] = data->fan[nr] * old_div /
549 FAN_DIV_FROM_REG(data->fan_div[nr]);
551 adm1031_write_value(client, ADM1031_REG_FAN_DIV(nr),
553 adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr),
555 up(&data->update_lock);
559 #define fan_offset(offset) \
560 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
562 return show_fan(dev, buf, offset - 1); \
564 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
566 return show_fan_min(dev, buf, offset - 1); \
568 static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \
570 return show_fan_div(dev, buf, offset - 1); \
572 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
573 const char *buf, size_t count) \
575 return set_fan_min(dev, buf, count, offset - 1); \
577 static ssize_t set_fan_##offset##_div (struct device *dev, struct device_attribute *attr, \
578 const char *buf, size_t count) \
580 return set_fan_div(dev, buf, count, offset - 1); \
582 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
584 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
585 show_fan_##offset##_min, set_fan_##offset##_min); \
586 static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
587 show_fan_##offset##_div, set_fan_##offset##_div); \
588 static DEVICE_ATTR(auto_fan##offset##_min_pwm, S_IRUGO | S_IWUSR, \
589 show_pwm_##offset, set_pwm_##offset)
596 static ssize_t show_temp(struct device *dev, char *buf, int nr)
598 struct adm1031_data *data = adm1031_update_device(dev);
601 ((data->ext_temp[nr] >> 6) & 0x3) * 2 :
602 (((data->ext_temp[nr] >> ((nr - 1) * 3)) & 7));
603 return sprintf(buf, "%d\n", TEMP_FROM_REG_EXT(data->temp[nr], ext));
605 static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
607 struct adm1031_data *data = adm1031_update_device(dev);
608 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
610 static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
612 struct adm1031_data *data = adm1031_update_device(dev);
613 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
615 static ssize_t show_temp_crit(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_crit[nr]));
621 set_temp_min(struct device *dev, const char *buf, size_t count, int nr)
623 struct i2c_client *client = to_i2c_client(dev);
624 struct adm1031_data *data = i2c_get_clientdata(client);
627 val = simple_strtol(buf, NULL, 10);
628 val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
629 down(&data->update_lock);
630 data->temp_min[nr] = TEMP_TO_REG(val);
631 adm1031_write_value(client, ADM1031_REG_TEMP_MIN(nr),
633 up(&data->update_lock);
637 set_temp_max(struct device *dev, const char *buf, size_t count, int nr)
639 struct i2c_client *client = to_i2c_client(dev);
640 struct adm1031_data *data = i2c_get_clientdata(client);
643 val = simple_strtol(buf, NULL, 10);
644 val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
645 down(&data->update_lock);
646 data->temp_max[nr] = TEMP_TO_REG(val);
647 adm1031_write_value(client, ADM1031_REG_TEMP_MAX(nr),
649 up(&data->update_lock);
653 set_temp_crit(struct device *dev, const char *buf, size_t count, int nr)
655 struct i2c_client *client = to_i2c_client(dev);
656 struct adm1031_data *data = i2c_get_clientdata(client);
659 val = simple_strtol(buf, NULL, 10);
660 val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
661 down(&data->update_lock);
662 data->temp_crit[nr] = TEMP_TO_REG(val);
663 adm1031_write_value(client, ADM1031_REG_TEMP_CRIT(nr),
664 data->temp_crit[nr]);
665 up(&data->update_lock);
669 #define temp_reg(offset) \
670 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
672 return show_temp(dev, buf, offset - 1); \
674 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
676 return show_temp_min(dev, buf, offset - 1); \
678 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
680 return show_temp_max(dev, buf, offset - 1); \
682 static ssize_t show_temp_##offset##_crit (struct device *dev, struct device_attribute *attr, char *buf) \
684 return show_temp_crit(dev, buf, offset - 1); \
686 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
687 const char *buf, size_t count) \
689 return set_temp_min(dev, buf, count, offset - 1); \
691 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
692 const char *buf, size_t count) \
694 return set_temp_max(dev, buf, count, offset - 1); \
696 static ssize_t set_temp_##offset##_crit (struct device *dev, struct device_attribute *attr, \
697 const char *buf, size_t count) \
699 return set_temp_crit(dev, buf, count, offset - 1); \
701 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
703 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
704 show_temp_##offset##_min, set_temp_##offset##_min); \
705 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
706 show_temp_##offset##_max, set_temp_##offset##_max); \
707 static DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR, \
708 show_temp_##offset##_crit, set_temp_##offset##_crit)
715 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
717 struct adm1031_data *data = adm1031_update_device(dev);
718 return sprintf(buf, "%d\n", data->alarm);
721 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
724 static int adm1031_attach_adapter(struct i2c_adapter *adapter)
726 if (!(adapter->class & I2C_CLASS_HWMON))
728 return i2c_probe(adapter, &addr_data, adm1031_detect);
731 /* This function is called by i2c_probe */
732 static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
734 struct i2c_client *new_client;
735 struct adm1031_data *data;
737 const char *name = "";
739 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
742 if (!(data = kzalloc(sizeof(struct adm1031_data), GFP_KERNEL))) {
747 new_client = &data->client;
748 i2c_set_clientdata(new_client, data);
749 new_client->addr = address;
750 new_client->adapter = adapter;
751 new_client->driver = &adm1031_driver;
752 new_client->flags = 0;
756 id = i2c_smbus_read_byte_data(new_client, 0x3d);
757 co = i2c_smbus_read_byte_data(new_client, 0x3e);
759 if (!((id == 0x31 || id == 0x30) && co == 0x41))
761 kind = (id == 0x30) ? adm1030 : adm1031;
767 /* Given the detected chip type, set the chip name and the
768 * auto fan control helper table. */
769 if (kind == adm1030) {
771 data->chan_select_table = &auto_channel_select_table_adm1030;
772 } else if (kind == adm1031) {
774 data->chan_select_table = &auto_channel_select_table_adm1031;
776 data->chip_type = kind;
778 strlcpy(new_client->name, name, I2C_NAME_SIZE);
780 init_MUTEX(&data->update_lock);
782 /* Tell the I2C layer a new client has arrived */
783 if ((err = i2c_attach_client(new_client)))
786 /* Initialize the ADM1031 chip */
787 adm1031_init_client(new_client);
789 /* Register sysfs hooks */
790 data->class_dev = hwmon_device_register(&new_client->dev);
791 if (IS_ERR(data->class_dev)) {
792 err = PTR_ERR(data->class_dev);
796 device_create_file(&new_client->dev, &dev_attr_fan1_input);
797 device_create_file(&new_client->dev, &dev_attr_fan1_div);
798 device_create_file(&new_client->dev, &dev_attr_fan1_min);
799 device_create_file(&new_client->dev, &dev_attr_pwm1);
800 device_create_file(&new_client->dev, &dev_attr_auto_fan1_channel);
801 device_create_file(&new_client->dev, &dev_attr_temp1_input);
802 device_create_file(&new_client->dev, &dev_attr_temp1_min);
803 device_create_file(&new_client->dev, &dev_attr_temp1_max);
804 device_create_file(&new_client->dev, &dev_attr_temp1_crit);
805 device_create_file(&new_client->dev, &dev_attr_temp2_input);
806 device_create_file(&new_client->dev, &dev_attr_temp2_min);
807 device_create_file(&new_client->dev, &dev_attr_temp2_max);
808 device_create_file(&new_client->dev, &dev_attr_temp2_crit);
810 device_create_file(&new_client->dev, &dev_attr_auto_temp1_off);
811 device_create_file(&new_client->dev, &dev_attr_auto_temp1_min);
812 device_create_file(&new_client->dev, &dev_attr_auto_temp1_max);
814 device_create_file(&new_client->dev, &dev_attr_auto_temp2_off);
815 device_create_file(&new_client->dev, &dev_attr_auto_temp2_min);
816 device_create_file(&new_client->dev, &dev_attr_auto_temp2_max);
818 device_create_file(&new_client->dev, &dev_attr_auto_fan1_min_pwm);
820 device_create_file(&new_client->dev, &dev_attr_alarms);
822 if (kind == adm1031) {
823 device_create_file(&new_client->dev, &dev_attr_fan2_input);
824 device_create_file(&new_client->dev, &dev_attr_fan2_div);
825 device_create_file(&new_client->dev, &dev_attr_fan2_min);
826 device_create_file(&new_client->dev, &dev_attr_pwm2);
827 device_create_file(&new_client->dev,
828 &dev_attr_auto_fan2_channel);
829 device_create_file(&new_client->dev, &dev_attr_temp3_input);
830 device_create_file(&new_client->dev, &dev_attr_temp3_min);
831 device_create_file(&new_client->dev, &dev_attr_temp3_max);
832 device_create_file(&new_client->dev, &dev_attr_temp3_crit);
833 device_create_file(&new_client->dev, &dev_attr_auto_temp3_off);
834 device_create_file(&new_client->dev, &dev_attr_auto_temp3_min);
835 device_create_file(&new_client->dev, &dev_attr_auto_temp3_max);
836 device_create_file(&new_client->dev, &dev_attr_auto_fan2_min_pwm);
842 i2c_detach_client(new_client);
849 static int adm1031_detach_client(struct i2c_client *client)
851 struct adm1031_data *data = i2c_get_clientdata(client);
854 hwmon_device_unregister(data->class_dev);
855 if ((ret = i2c_detach_client(client)) != 0) {
862 static void adm1031_init_client(struct i2c_client *client)
864 unsigned int read_val;
866 struct adm1031_data *data = i2c_get_clientdata(client);
868 mask = (ADM1031_CONF2_PWM1_ENABLE | ADM1031_CONF2_TACH1_ENABLE);
869 if (data->chip_type == adm1031) {
870 mask |= (ADM1031_CONF2_PWM2_ENABLE |
871 ADM1031_CONF2_TACH2_ENABLE);
873 /* Initialize the ADM1031 chip (enables fan speed reading ) */
874 read_val = adm1031_read_value(client, ADM1031_REG_CONF2);
875 if ((read_val | mask) != read_val) {
876 adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask);
879 read_val = adm1031_read_value(client, ADM1031_REG_CONF1);
880 if ((read_val | ADM1031_CONF1_MONITOR_ENABLE) != read_val) {
881 adm1031_write_value(client, ADM1031_REG_CONF1, read_val |
882 ADM1031_CONF1_MONITOR_ENABLE);
887 static struct adm1031_data *adm1031_update_device(struct device *dev)
889 struct i2c_client *client = to_i2c_client(dev);
890 struct adm1031_data *data = i2c_get_clientdata(client);
893 down(&data->update_lock);
895 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
898 dev_dbg(&client->dev, "Starting adm1031 update\n");
900 chan < ((data->chip_type == adm1031) ? 3 : 2); chan++) {
904 adm1031_read_value(client, ADM1031_REG_TEMP(chan));
905 data->ext_temp[chan] =
906 adm1031_read_value(client, ADM1031_REG_EXT_TEMP);
908 adm1031_read_value(client, ADM1031_REG_TEMP(chan));
910 data->ext_temp[chan] =
911 adm1031_read_value(client,
912 ADM1031_REG_EXT_TEMP);
915 adm1031_read_value(client,
916 ADM1031_REG_TEMP(chan));
918 /* oldh is actually newer */
920 dev_warn(&client->dev,
921 "Remote temperature may be "
925 data->temp[chan] = newh;
927 data->temp_min[chan] =
928 adm1031_read_value(client,
929 ADM1031_REG_TEMP_MIN(chan));
930 data->temp_max[chan] =
931 adm1031_read_value(client,
932 ADM1031_REG_TEMP_MAX(chan));
933 data->temp_crit[chan] =
934 adm1031_read_value(client,
935 ADM1031_REG_TEMP_CRIT(chan));
936 data->auto_temp[chan] =
937 adm1031_read_value(client,
938 ADM1031_REG_AUTO_TEMP(chan));
942 data->conf1 = adm1031_read_value(client, ADM1031_REG_CONF1);
943 data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2);
945 data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0))
946 | (adm1031_read_value(client, ADM1031_REG_STATUS(1))
948 if (data->chip_type == adm1030) {
949 data->alarm &= 0xc0ff;
952 for (chan=0; chan<(data->chip_type == adm1030 ? 1 : 2); chan++) {
953 data->fan_div[chan] =
954 adm1031_read_value(client, ADM1031_REG_FAN_DIV(chan));
955 data->fan_min[chan] =
956 adm1031_read_value(client, ADM1031_REG_FAN_MIN(chan));
958 adm1031_read_value(client, ADM1031_REG_FAN_SPEED(chan));
960 0xf & (adm1031_read_value(client, ADM1031_REG_PWM) >>
963 data->last_updated = jiffies;
967 up(&data->update_lock);
972 static int __init sensors_adm1031_init(void)
974 return i2c_add_driver(&adm1031_driver);
977 static void __exit sensors_adm1031_exit(void)
979 i2c_del_driver(&adm1031_driver);
982 MODULE_AUTHOR("Alexandre d'Alton <alex@alexdalton.org>");
983 MODULE_DESCRIPTION("ADM1031/ADM1030 driver");
984 MODULE_LICENSE("GPL");
986 module_init(sensors_adm1031_init);
987 module_exit(sensors_adm1031_exit);