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/i2c.h>
28 #include <linux/i2c-sensor.h>
30 /* Following macros takes channel parameter starting from 0 to 2 */
31 #define ADM1031_REG_FAN_SPEED(nr) (0x08 + (nr))
32 #define ADM1031_REG_FAN_DIV(nr) (0x20 + (nr))
33 #define ADM1031_REG_PWM (0x22)
34 #define ADM1031_REG_FAN_MIN(nr) (0x10 + (nr))
36 #define ADM1031_REG_TEMP_MAX(nr) (0x14 + 4*(nr))
37 #define ADM1031_REG_TEMP_MIN(nr) (0x15 + 4*(nr))
38 #define ADM1031_REG_TEMP_CRIT(nr) (0x16 + 4*(nr))
40 #define ADM1031_REG_TEMP(nr) (0xa + (nr))
41 #define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr))
43 #define ADM1031_REG_STATUS(nr) (0x2 + (nr))
45 #define ADM1031_REG_CONF1 0x0
46 #define ADM1031_REG_CONF2 0x1
47 #define ADM1031_REG_EXT_TEMP 0x6
49 #define ADM1031_CONF1_MONITOR_ENABLE 0x01 /* Monitoring enable */
50 #define ADM1031_CONF1_PWM_INVERT 0x08 /* PWM Invert */
51 #define ADM1031_CONF1_AUTO_MODE 0x80 /* Auto FAN */
53 #define ADM1031_CONF2_PWM1_ENABLE 0x01
54 #define ADM1031_CONF2_PWM2_ENABLE 0x02
55 #define ADM1031_CONF2_TACH1_ENABLE 0x04
56 #define ADM1031_CONF2_TACH2_ENABLE 0x08
57 #define ADM1031_CONF2_TEMP_ENABLE(chan) (0x10 << (chan))
59 /* Addresses to scan */
60 static unsigned short normal_i2c[] = { I2C_CLIENT_END };
61 static unsigned short normal_i2c_range[] = { 0x2c, 0x2e, I2C_CLIENT_END };
62 static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
63 static unsigned int normal_isa_range[] = { I2C_CLIENT_ISA_END };
65 /* Insmod parameters */
66 SENSORS_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 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 .flags = I2C_DF_NOTIFY,
111 .attach_adapter = adm1031_attach_adapter,
112 .detach_client = adm1031_detach_client,
115 static int adm1031_id;
117 static inline u8 adm1031_read_value(struct i2c_client *client, u8 reg)
119 return i2c_smbus_read_byte_data(client, reg);
123 adm1031_write_value(struct i2c_client *client, u8 reg, unsigned int value)
125 return i2c_smbus_write_byte_data(client, reg, value);
129 #define TEMP_TO_REG(val) (((val) < 0 ? ((val - 500) / 1000) : \
130 ((val + 500) / 1000)))
132 #define TEMP_FROM_REG(val) ((val) * 1000)
134 #define TEMP_FROM_REG_EXT(val, ext) (TEMP_FROM_REG(val) + (ext) * 125)
136 #define FAN_FROM_REG(reg, div) ((reg) ? (11250 * 60) / ((reg) * (div)) : 0)
138 static int FAN_TO_REG(int reg, int div)
141 tmp = FAN_FROM_REG(SENSORS_LIMIT(reg, 0, 65535), div);
142 return tmp > 255 ? 255 : tmp;
145 #define FAN_DIV_FROM_REG(reg) (1<<(((reg)&0xc0)>>6))
147 #define PWM_TO_REG(val) (SENSORS_LIMIT((val), 0, 255) >> 4)
148 #define PWM_FROM_REG(val) ((val) << 4)
150 #define FAN_CHAN_FROM_REG(reg) (((reg) >> 5) & 7)
151 #define FAN_CHAN_TO_REG(val, reg) \
152 (((reg) & 0x1F) | (((val) << 5) & 0xe0))
154 #define AUTO_TEMP_MIN_TO_REG(val, reg) \
155 ((((val)/500) & 0xf8)|((reg) & 0x7))
156 #define AUTO_TEMP_RANGE_FROM_REG(reg) (5000 * (1<< ((reg)&0x7)))
157 #define AUTO_TEMP_MIN_FROM_REG(reg) (1000 * ((((reg) >> 3) & 0x1f) << 2))
159 #define AUTO_TEMP_MIN_FROM_REG_DEG(reg) ((((reg) >> 3) & 0x1f) << 2)
161 #define AUTO_TEMP_OFF_FROM_REG(reg) \
162 (AUTO_TEMP_MIN_FROM_REG(reg) - 5000)
164 #define AUTO_TEMP_MAX_FROM_REG(reg) \
165 (AUTO_TEMP_RANGE_FROM_REG(reg) + \
166 AUTO_TEMP_MIN_FROM_REG(reg))
168 static int AUTO_TEMP_MAX_TO_REG(int val, int reg, int pwm)
171 int range = val - AUTO_TEMP_MIN_FROM_REG(reg);
173 range = ((val - AUTO_TEMP_MIN_FROM_REG(reg))*10)/(16 - pwm);
174 ret = ((reg & 0xf8) |
177 range < 40000 ? 2 : range < 80000 ? 3 : 4));
181 /* FAN auto control */
182 #define GET_FAN_AUTO_BITFIELD(data, idx) \
183 (*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx%2]
185 /* The tables below contains the possible values for the auto fan
186 * control bitfields. the index in the table is the register value.
187 * MSb is the auto fan control enable bit, so the four first entries
188 * in the table disables auto fan control when both bitfields are zero.
190 static auto_chan_table_t auto_channel_select_table_adm1031 = {
191 {0, 0}, {0, 0}, {0, 0}, {0, 0},
192 {2 /*0b010 */ , 4 /*0b100 */ },
193 {2 /*0b010 */ , 2 /*0b010 */ },
194 {4 /*0b100 */ , 4 /*0b100 */ },
195 {7 /*0b111 */ , 7 /*0b111 */ },
198 static auto_chan_table_t auto_channel_select_table_adm1030 = {
199 {0, 0}, {0, 0}, {0, 0}, {0, 0},
201 {0xff /*invalid */ , 0},
202 {0xff /*invalid */ , 0},
206 /* That function checks if a bitfield is valid and returns the other bitfield
207 * nearest match if no exact match where found.
210 get_fan_auto_nearest(struct adm1031_data *data,
211 int chan, u8 val, u8 reg, u8 * new_reg)
214 int first_match = -1, exact_match = -1;
216 (*data->chan_select_table)[FAN_CHAN_FROM_REG(reg)][chan ? 0 : 1];
223 for (i = 0; i < 8; i++) {
224 if ((val == (*data->chan_select_table)[i][chan]) &&
225 ((*data->chan_select_table)[i][chan ? 0 : 1] ==
227 /* We found an exact match */
230 } else if (val == (*data->chan_select_table)[i][chan] &&
232 /* Save the first match in case of an exact match has not been
239 if (exact_match >= 0) {
240 *new_reg = exact_match;
241 } else if (first_match >= 0) {
242 *new_reg = first_match;
249 static ssize_t show_fan_auto_channel(struct device *dev, char *buf, int nr)
251 struct adm1031_data *data = adm1031_update_device(dev);
252 return sprintf(buf, "%d\n", GET_FAN_AUTO_BITFIELD(data, nr));
256 set_fan_auto_channel(struct device *dev, const char *buf, size_t count, int nr)
258 struct i2c_client *client = to_i2c_client(dev);
259 struct adm1031_data *data = i2c_get_clientdata(client);
265 old_fan_mode = data->conf1;
267 down(&data->update_lock);
268 val = simple_strtol(buf, NULL, 10);
270 if ((ret = get_fan_auto_nearest(data, nr, val, data->conf1, ®))) {
271 up(&data->update_lock);
274 if (((data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1)) & ADM1031_CONF1_AUTO_MODE) ^
275 (old_fan_mode & ADM1031_CONF1_AUTO_MODE)) {
276 if (data->conf1 & ADM1031_CONF1_AUTO_MODE){
277 /* Switch to Auto Fan Mode
279 * Set PWM registers to 33% Both */
280 data->old_pwm[0] = data->pwm[0];
281 data->old_pwm[1] = data->pwm[1];
282 adm1031_write_value(client, ADM1031_REG_PWM, 0x55);
284 /* Switch to Manual Mode */
285 data->pwm[0] = data->old_pwm[0];
286 data->pwm[1] = data->old_pwm[1];
287 /* Restore PWM registers */
288 adm1031_write_value(client, ADM1031_REG_PWM,
289 data->pwm[0] | (data->pwm[1] << 4));
292 data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1);
293 adm1031_write_value(client, ADM1031_REG_CONF1, data->conf1);
294 up(&data->update_lock);
298 #define fan_auto_channel_offset(offset) \
299 static ssize_t show_fan_auto_channel_##offset (struct device *dev, char *buf) \
301 return show_fan_auto_channel(dev, buf, 0x##offset - 1); \
303 static ssize_t set_fan_auto_channel_##offset (struct device *dev, \
304 const char *buf, size_t count) \
306 return set_fan_auto_channel(dev, buf, count, 0x##offset - 1); \
308 static DEVICE_ATTR(auto_fan##offset##_channel, S_IRUGO | S_IWUSR, \
309 show_fan_auto_channel_##offset, \
310 set_fan_auto_channel_##offset)
312 fan_auto_channel_offset(1);
313 fan_auto_channel_offset(2);
316 static ssize_t show_auto_temp_off(struct device *dev, char *buf, int nr)
318 struct adm1031_data *data = adm1031_update_device(dev);
319 return sprintf(buf, "%d\n",
320 AUTO_TEMP_OFF_FROM_REG(data->auto_temp[nr]));
322 static ssize_t show_auto_temp_min(struct device *dev, char *buf, int nr)
324 struct adm1031_data *data = adm1031_update_device(dev);
325 return sprintf(buf, "%d\n",
326 AUTO_TEMP_MIN_FROM_REG(data->auto_temp[nr]));
329 set_auto_temp_min(struct device *dev, const char *buf, size_t count, int nr)
331 struct i2c_client *client = to_i2c_client(dev);
332 struct adm1031_data *data = i2c_get_clientdata(client);
335 down(&data->update_lock);
336 val = simple_strtol(buf, NULL, 10);
337 data->auto_temp[nr] = AUTO_TEMP_MIN_TO_REG(val, data->auto_temp[nr]);
338 adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
339 data->auto_temp[nr]);
340 up(&data->update_lock);
343 static ssize_t show_auto_temp_max(struct device *dev, char *buf, int nr)
345 struct adm1031_data *data = adm1031_update_device(dev);
346 return sprintf(buf, "%d\n",
347 AUTO_TEMP_MAX_FROM_REG(data->auto_temp[nr]));
350 set_auto_temp_max(struct device *dev, const char *buf, size_t count, int nr)
352 struct i2c_client *client = to_i2c_client(dev);
353 struct adm1031_data *data = i2c_get_clientdata(client);
356 down(&data->update_lock);
357 val = simple_strtol(buf, NULL, 10);
358 data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr], data->pwm[nr]);
359 adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
361 up(&data->update_lock);
365 #define auto_temp_reg(offset) \
366 static ssize_t show_auto_temp_##offset##_off (struct device *dev, char *buf) \
368 return show_auto_temp_off(dev, buf, 0x##offset - 1); \
370 static ssize_t show_auto_temp_##offset##_min (struct device *dev, char *buf) \
372 return show_auto_temp_min(dev, buf, 0x##offset - 1); \
374 static ssize_t show_auto_temp_##offset##_max (struct device *dev, char *buf) \
376 return show_auto_temp_max(dev, buf, 0x##offset - 1); \
378 static ssize_t set_auto_temp_##offset##_min (struct device *dev, \
379 const char *buf, size_t count) \
381 return set_auto_temp_min(dev, buf, count, 0x##offset - 1); \
383 static ssize_t set_auto_temp_##offset##_max (struct device *dev, \
384 const char *buf, size_t count) \
386 return set_auto_temp_max(dev, buf, count, 0x##offset - 1); \
388 static DEVICE_ATTR(auto_temp##offset##_off, S_IRUGO, \
389 show_auto_temp_##offset##_off, NULL); \
390 static DEVICE_ATTR(auto_temp##offset##_min, S_IRUGO | S_IWUSR, \
391 show_auto_temp_##offset##_min, set_auto_temp_##offset##_min);\
392 static DEVICE_ATTR(auto_temp##offset##_max, S_IRUGO | S_IWUSR, \
393 show_auto_temp_##offset##_max, set_auto_temp_##offset##_max)
400 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
402 struct adm1031_data *data = adm1031_update_device(dev);
403 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
406 set_pwm(struct device *dev, const char *buf, size_t count, int nr)
408 struct i2c_client *client = to_i2c_client(dev);
409 struct adm1031_data *data = i2c_get_clientdata(client);
412 down(&data->update_lock);
413 val = simple_strtol(buf, NULL, 10);
414 if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) &&
415 (((val>>4) & 0xf) != 5)) {
416 /* In automatic mode, the only PWM accepted is 33% */
417 up(&data->update_lock);
420 data->pwm[nr] = PWM_TO_REG(val);
421 reg = adm1031_read_value(client, ADM1031_REG_PWM);
422 adm1031_write_value(client, ADM1031_REG_PWM,
423 nr ? ((data->pwm[nr] << 4) & 0xf0) | (reg & 0xf)
424 : (data->pwm[nr] & 0xf) | (reg & 0xf0));
425 up(&data->update_lock);
429 #define pwm_reg(offset) \
430 static ssize_t show_pwm_##offset (struct device *dev, char *buf) \
432 return show_pwm(dev, buf, 0x##offset - 1); \
434 static ssize_t set_pwm_##offset (struct device *dev, \
435 const char *buf, size_t count) \
437 return set_pwm(dev, buf, count, 0x##offset - 1); \
439 static DEVICE_ATTR(fan##offset##_pwm, S_IRUGO | S_IWUSR, \
440 show_pwm_##offset, set_pwm_##offset)
448 * That function checks the cases where the fan reading is not
449 * relevent. It is used to provide 0 as fan reading when the fan is
450 * not supposed to run
452 static int trust_fan_readings(struct adm1031_data *data, int chan)
456 if (data->conf1 & ADM1031_CONF1_AUTO_MODE) {
457 switch (data->conf1 & 0x60) {
458 case 0x00: /* remote temp1 controls fan1 remote temp2 controls fan2 */
459 res = data->temp[chan+1] >=
460 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]);
462 case 0x20: /* remote temp1 controls both fans */
465 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]);
467 case 0x40: /* remote temp2 controls both fans */
470 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]);
472 case 0x60: /* max controls both fans */
475 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[0])
477 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1])
478 || (data->chip_type == adm1031
480 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]));
484 res = data->pwm[chan] > 0;
490 static ssize_t show_fan(struct device *dev, char *buf, int nr)
492 struct adm1031_data *data = adm1031_update_device(dev);
495 value = trust_fan_readings(data, nr) ? FAN_FROM_REG(data->fan[nr],
496 FAN_DIV_FROM_REG(data->fan_div[nr])) : 0;
497 return sprintf(buf, "%d\n", value);
500 static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
502 struct adm1031_data *data = adm1031_update_device(dev);
503 return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[nr]));
505 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
507 struct adm1031_data *data = adm1031_update_device(dev);
508 return sprintf(buf, "%d\n",
509 FAN_FROM_REG(data->fan_min[nr],
510 FAN_DIV_FROM_REG(data->fan_div[nr])));
513 set_fan_min(struct device *dev, const char *buf, size_t count, int nr)
515 struct i2c_client *client = to_i2c_client(dev);
516 struct adm1031_data *data = i2c_get_clientdata(client);
519 down(&data->update_lock);
520 val = simple_strtol(buf, NULL, 10);
523 FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr]));
525 data->fan_min[nr] = 0xff;
527 adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), data->fan_min[nr]);
528 up(&data->update_lock);
532 set_fan_div(struct device *dev, const char *buf, size_t count, int nr)
534 struct i2c_client *client = to_i2c_client(dev);
535 struct adm1031_data *data = i2c_get_clientdata(client);
538 int old_div = FAN_DIV_FROM_REG(data->fan_div[nr]);
541 val = simple_strtol(buf, NULL, 10);
542 tmp = val == 8 ? 0xc0 :
549 down(&data->update_lock);
550 data->fan_div[nr] = (tmp & 0xC0) | (0x3f & data->fan_div[nr]);
551 new_min = data->fan_min[nr] * old_div /
552 FAN_DIV_FROM_REG(data->fan_div[nr]);
553 data->fan_min[nr] = new_min > 0xff ? 0xff : new_min;
554 data->fan[nr] = data->fan[nr] * old_div /
555 FAN_DIV_FROM_REG(data->fan_div[nr]);
557 adm1031_write_value(client, ADM1031_REG_FAN_DIV(nr),
559 adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr),
561 up(&data->update_lock);
565 #define fan_offset(offset) \
566 static ssize_t show_fan_##offset (struct device *dev, char *buf) \
568 return show_fan(dev, buf, 0x##offset - 1); \
570 static ssize_t show_fan_##offset##_min (struct device *dev, char *buf) \
572 return show_fan_min(dev, buf, 0x##offset - 1); \
574 static ssize_t show_fan_##offset##_div (struct device *dev, char *buf) \
576 return show_fan_div(dev, buf, 0x##offset - 1); \
578 static ssize_t set_fan_##offset##_min (struct device *dev, \
579 const char *buf, size_t count) \
581 return set_fan_min(dev, buf, count, 0x##offset - 1); \
583 static ssize_t set_fan_##offset##_div (struct device *dev, \
584 const char *buf, size_t count) \
586 return set_fan_div(dev, buf, count, 0x##offset - 1); \
588 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
590 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
591 show_fan_##offset##_min, set_fan_##offset##_min); \
592 static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
593 show_fan_##offset##_div, set_fan_##offset##_div); \
594 static DEVICE_ATTR(auto_fan##offset##_min_pwm, S_IRUGO | S_IWUSR, \
595 show_pwm_##offset, set_pwm_##offset)
602 static ssize_t show_temp(struct device *dev, char *buf, int nr)
604 struct adm1031_data *data = adm1031_update_device(dev);
607 ((data->ext_temp[nr] >> 6) & 0x3) * 2 :
608 (((data->ext_temp[nr] >> ((nr - 1) * 3)) & 7));
609 return sprintf(buf, "%d\n", TEMP_FROM_REG_EXT(data->temp[nr], ext));
611 static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
613 struct adm1031_data *data = adm1031_update_device(dev);
614 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
616 static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
618 struct adm1031_data *data = adm1031_update_device(dev);
619 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
621 static ssize_t show_temp_crit(struct device *dev, char *buf, int nr)
623 struct adm1031_data *data = adm1031_update_device(dev);
624 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
627 set_temp_min(struct device *dev, const char *buf, size_t count, int nr)
629 struct i2c_client *client = to_i2c_client(dev);
630 struct adm1031_data *data = i2c_get_clientdata(client);
633 val = simple_strtol(buf, NULL, 10);
634 val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
635 down(&data->update_lock);
636 data->temp_min[nr] = TEMP_TO_REG(val);
637 adm1031_write_value(client, ADM1031_REG_TEMP_MIN(nr),
639 up(&data->update_lock);
643 set_temp_max(struct device *dev, const char *buf, size_t count, int nr)
645 struct i2c_client *client = to_i2c_client(dev);
646 struct adm1031_data *data = i2c_get_clientdata(client);
649 val = simple_strtol(buf, NULL, 10);
650 val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
651 down(&data->update_lock);
652 data->temp_max[nr] = TEMP_TO_REG(val);
653 adm1031_write_value(client, ADM1031_REG_TEMP_MAX(nr),
655 up(&data->update_lock);
659 set_temp_crit(struct device *dev, const char *buf, size_t count, int nr)
661 struct i2c_client *client = to_i2c_client(dev);
662 struct adm1031_data *data = i2c_get_clientdata(client);
665 val = simple_strtol(buf, NULL, 10);
666 val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
667 down(&data->update_lock);
668 data->temp_crit[nr] = TEMP_TO_REG(val);
669 adm1031_write_value(client, ADM1031_REG_TEMP_CRIT(nr),
670 data->temp_crit[nr]);
671 up(&data->update_lock);
675 #define temp_reg(offset) \
676 static ssize_t show_temp_##offset (struct device *dev, char *buf) \
678 return show_temp(dev, buf, 0x##offset - 1); \
680 static ssize_t show_temp_##offset##_min (struct device *dev, char *buf) \
682 return show_temp_min(dev, buf, 0x##offset - 1); \
684 static ssize_t show_temp_##offset##_max (struct device *dev, char *buf) \
686 return show_temp_max(dev, buf, 0x##offset - 1); \
688 static ssize_t show_temp_##offset##_crit (struct device *dev, char *buf) \
690 return show_temp_crit(dev, buf, 0x##offset - 1); \
692 static ssize_t set_temp_##offset##_min (struct device *dev, \
693 const char *buf, size_t count) \
695 return set_temp_min(dev, buf, count, 0x##offset - 1); \
697 static ssize_t set_temp_##offset##_max (struct device *dev, \
698 const char *buf, size_t count) \
700 return set_temp_max(dev, buf, count, 0x##offset - 1); \
702 static ssize_t set_temp_##offset##_crit (struct device *dev, \
703 const char *buf, size_t count) \
705 return set_temp_crit(dev, buf, count, 0x##offset - 1); \
707 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
709 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
710 show_temp_##offset##_min, set_temp_##offset##_min); \
711 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
712 show_temp_##offset##_max, set_temp_##offset##_max); \
713 static DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR, \
714 show_temp_##offset##_crit, set_temp_##offset##_crit)
721 static ssize_t show_alarms(struct device *dev, char *buf)
723 struct adm1031_data *data = adm1031_update_device(dev);
724 return sprintf(buf, "%d\n", data->alarm);
727 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
730 static int adm1031_attach_adapter(struct i2c_adapter *adapter)
732 if (!(adapter->class & I2C_CLASS_HWMON))
734 return i2c_detect(adapter, &addr_data, adm1031_detect);
737 /* This function is called by i2c_detect */
738 static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
740 struct i2c_client *new_client;
741 struct adm1031_data *data;
743 const char *name = "";
745 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
748 if (!(data = kmalloc(sizeof(struct adm1031_data), GFP_KERNEL))) {
752 memset(data, 0, sizeof(struct adm1031_data));
754 new_client = &data->client;
755 i2c_set_clientdata(new_client, data);
756 new_client->addr = address;
757 new_client->adapter = adapter;
758 new_client->driver = &adm1031_driver;
759 new_client->flags = 0;
763 id = i2c_smbus_read_byte_data(new_client, 0x3d);
764 co = i2c_smbus_read_byte_data(new_client, 0x3e);
766 if (!((id == 0x31 || id == 0x30) && co == 0x41))
768 kind = (id == 0x30) ? adm1030 : adm1031;
774 /* Given the detected chip type, set the chip name and the
775 * auto fan control helper table. */
776 if (kind == adm1030) {
778 data->chan_select_table = &auto_channel_select_table_adm1030;
779 } else if (kind == adm1031) {
781 data->chan_select_table = &auto_channel_select_table_adm1031;
783 data->chip_type = kind;
785 strlcpy(new_client->name, name, I2C_NAME_SIZE);
787 new_client->id = adm1031_id++;
789 init_MUTEX(&data->update_lock);
791 /* Tell the I2C layer a new client has arrived */
792 if ((err = i2c_attach_client(new_client)))
795 /* Initialize the ADM1031 chip */
796 adm1031_init_client(new_client);
798 /* Register sysfs hooks */
799 device_create_file(&new_client->dev, &dev_attr_fan1_input);
800 device_create_file(&new_client->dev, &dev_attr_fan1_div);
801 device_create_file(&new_client->dev, &dev_attr_fan1_min);
802 device_create_file(&new_client->dev, &dev_attr_fan1_pwm);
803 device_create_file(&new_client->dev, &dev_attr_auto_fan1_channel);
804 device_create_file(&new_client->dev, &dev_attr_temp1_input);
805 device_create_file(&new_client->dev, &dev_attr_temp1_min);
806 device_create_file(&new_client->dev, &dev_attr_temp1_max);
807 device_create_file(&new_client->dev, &dev_attr_temp1_crit);
808 device_create_file(&new_client->dev, &dev_attr_temp2_input);
809 device_create_file(&new_client->dev, &dev_attr_temp2_min);
810 device_create_file(&new_client->dev, &dev_attr_temp2_max);
811 device_create_file(&new_client->dev, &dev_attr_temp2_crit);
813 device_create_file(&new_client->dev, &dev_attr_auto_temp1_off);
814 device_create_file(&new_client->dev, &dev_attr_auto_temp1_min);
815 device_create_file(&new_client->dev, &dev_attr_auto_temp1_max);
817 device_create_file(&new_client->dev, &dev_attr_auto_temp2_off);
818 device_create_file(&new_client->dev, &dev_attr_auto_temp2_min);
819 device_create_file(&new_client->dev, &dev_attr_auto_temp2_max);
821 device_create_file(&new_client->dev, &dev_attr_auto_fan1_min_pwm);
823 device_create_file(&new_client->dev, &dev_attr_alarms);
825 if (kind == adm1031) {
826 device_create_file(&new_client->dev, &dev_attr_fan2_input);
827 device_create_file(&new_client->dev, &dev_attr_fan2_div);
828 device_create_file(&new_client->dev, &dev_attr_fan2_min);
829 device_create_file(&new_client->dev, &dev_attr_fan2_pwm);
830 device_create_file(&new_client->dev,
831 &dev_attr_auto_fan2_channel);
832 device_create_file(&new_client->dev, &dev_attr_temp3_input);
833 device_create_file(&new_client->dev, &dev_attr_temp3_min);
834 device_create_file(&new_client->dev, &dev_attr_temp3_max);
835 device_create_file(&new_client->dev, &dev_attr_temp3_crit);
836 device_create_file(&new_client->dev, &dev_attr_auto_temp3_off);
837 device_create_file(&new_client->dev, &dev_attr_auto_temp3_min);
838 device_create_file(&new_client->dev, &dev_attr_auto_temp3_max);
839 device_create_file(&new_client->dev, &dev_attr_auto_fan2_min_pwm);
850 static int adm1031_detach_client(struct i2c_client *client)
853 if ((ret = i2c_detach_client(client)) != 0) {
860 static void adm1031_init_client(struct i2c_client *client)
862 unsigned int read_val;
864 struct adm1031_data *data = i2c_get_clientdata(client);
866 mask = (ADM1031_CONF2_PWM1_ENABLE | ADM1031_CONF2_TACH1_ENABLE);
867 if (data->chip_type == adm1031) {
868 mask |= (ADM1031_CONF2_PWM2_ENABLE |
869 ADM1031_CONF2_TACH2_ENABLE);
871 /* Initialize the ADM1031 chip (enables fan speed reading ) */
872 read_val = adm1031_read_value(client, ADM1031_REG_CONF2);
873 if ((read_val | mask) != read_val) {
874 adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask);
877 read_val = adm1031_read_value(client, ADM1031_REG_CONF1);
878 if ((read_val | ADM1031_CONF1_MONITOR_ENABLE) != read_val) {
879 adm1031_write_value(client, ADM1031_REG_CONF1, read_val |
880 ADM1031_CONF1_MONITOR_ENABLE);
885 static struct adm1031_data *adm1031_update_device(struct device *dev)
887 struct i2c_client *client = to_i2c_client(dev);
888 struct adm1031_data *data = i2c_get_clientdata(client);
891 down(&data->update_lock);
893 if ((jiffies - data->last_updated > HZ + HZ / 2) ||
894 (jiffies < data->last_updated) || !data->valid) {
896 dev_dbg(&client->dev, "Starting adm1031 update\n");
898 chan < ((data->chip_type == adm1031) ? 3 : 2); chan++) {
902 adm1031_read_value(client, ADM1031_REG_TEMP(chan));
903 data->ext_temp[chan] =
904 adm1031_read_value(client, ADM1031_REG_EXT_TEMP);
906 adm1031_read_value(client, ADM1031_REG_TEMP(chan));
908 data->ext_temp[chan] =
909 adm1031_read_value(client,
910 ADM1031_REG_EXT_TEMP);
913 adm1031_read_value(client,
914 ADM1031_REG_TEMP(chan));
916 /* oldh is actually newer */
918 dev_warn(&client->dev,
919 "Remote temperature may be "
923 data->temp[chan] = newh;
925 data->temp_min[chan] =
926 adm1031_read_value(client,
927 ADM1031_REG_TEMP_MIN(chan));
928 data->temp_max[chan] =
929 adm1031_read_value(client,
930 ADM1031_REG_TEMP_MAX(chan));
931 data->temp_crit[chan] =
932 adm1031_read_value(client,
933 ADM1031_REG_TEMP_CRIT(chan));
934 data->auto_temp[chan] =
935 adm1031_read_value(client,
936 ADM1031_REG_AUTO_TEMP(chan));
940 data->conf1 = adm1031_read_value(client, ADM1031_REG_CONF1);
941 data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2);
943 data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0))
944 | (adm1031_read_value(client, ADM1031_REG_STATUS(1))
946 if (data->chip_type == adm1030) {
947 data->alarm &= 0xc0ff;
950 for (chan=0; chan<(data->chip_type == adm1030 ? 1 : 2); chan++) {
951 data->fan_div[chan] =
952 adm1031_read_value(client, ADM1031_REG_FAN_DIV(chan));
953 data->fan_min[chan] =
954 adm1031_read_value(client, ADM1031_REG_FAN_MIN(chan));
956 adm1031_read_value(client, ADM1031_REG_FAN_SPEED(chan));
958 0xf & (adm1031_read_value(client, ADM1031_REG_PWM) >>
961 data->last_updated = jiffies;
965 up(&data->update_lock);
970 static int __init sensors_adm1031_init(void)
972 return i2c_add_driver(&adm1031_driver);
975 static void __exit sensors_adm1031_exit(void)
977 i2c_del_driver(&adm1031_driver);
980 MODULE_AUTHOR("Alexandre d'Alton <alex@alexdalton.org>");
981 MODULE_DESCRIPTION("ADM1031/ADM1030 driver");
982 MODULE_LICENSE("GPL");
984 module_init(sensors_adm1031_init);
985 module_exit(sensors_adm1031_exit);