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[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
61 static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
63 /* Insmod parameters */
64 SENSORS_INSMOD_2(adm1030, adm1031);
66 typedef u8 auto_chan_table_t[8][2];
68 /* Each client has this additional data */
70 struct i2c_client client;
71 struct semaphore update_lock;
73 char valid; /* !=0 if following fields are valid */
74 unsigned long last_updated; /* In jiffies */
75 /* The chan_select_table contains the possible configurations for
78 auto_chan_table_t *chan_select_table;
98 static int adm1031_attach_adapter(struct i2c_adapter *adapter);
99 static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind);
100 static void adm1031_init_client(struct i2c_client *client);
101 static int adm1031_detach_client(struct i2c_client *client);
102 static struct adm1031_data *adm1031_update_device(struct device *dev);
104 /* This is the driver that will be inserted */
105 static struct i2c_driver adm1031_driver = {
106 .owner = THIS_MODULE,
108 .flags = I2C_DF_NOTIFY,
109 .attach_adapter = adm1031_attach_adapter,
110 .detach_client = adm1031_detach_client,
113 static int adm1031_id;
115 static inline u8 adm1031_read_value(struct i2c_client *client, u8 reg)
117 return i2c_smbus_read_byte_data(client, reg);
121 adm1031_write_value(struct i2c_client *client, u8 reg, unsigned int value)
123 return i2c_smbus_write_byte_data(client, reg, value);
127 #define TEMP_TO_REG(val) (((val) < 0 ? ((val - 500) / 1000) : \
128 ((val + 500) / 1000)))
130 #define TEMP_FROM_REG(val) ((val) * 1000)
132 #define TEMP_FROM_REG_EXT(val, ext) (TEMP_FROM_REG(val) + (ext) * 125)
134 #define FAN_FROM_REG(reg, div) ((reg) ? (11250 * 60) / ((reg) * (div)) : 0)
136 static int FAN_TO_REG(int reg, int div)
139 tmp = FAN_FROM_REG(SENSORS_LIMIT(reg, 0, 65535), div);
140 return tmp > 255 ? 255 : tmp;
143 #define FAN_DIV_FROM_REG(reg) (1<<(((reg)&0xc0)>>6))
145 #define PWM_TO_REG(val) (SENSORS_LIMIT((val), 0, 255) >> 4)
146 #define PWM_FROM_REG(val) ((val) << 4)
148 #define FAN_CHAN_FROM_REG(reg) (((reg) >> 5) & 7)
149 #define FAN_CHAN_TO_REG(val, reg) \
150 (((reg) & 0x1F) | (((val) << 5) & 0xe0))
152 #define AUTO_TEMP_MIN_TO_REG(val, reg) \
153 ((((val)/500) & 0xf8)|((reg) & 0x7))
154 #define AUTO_TEMP_RANGE_FROM_REG(reg) (5000 * (1<< ((reg)&0x7)))
155 #define AUTO_TEMP_MIN_FROM_REG(reg) (1000 * ((((reg) >> 3) & 0x1f) << 2))
157 #define AUTO_TEMP_MIN_FROM_REG_DEG(reg) ((((reg) >> 3) & 0x1f) << 2)
159 #define AUTO_TEMP_OFF_FROM_REG(reg) \
160 (AUTO_TEMP_MIN_FROM_REG(reg) - 5000)
162 #define AUTO_TEMP_MAX_FROM_REG(reg) \
163 (AUTO_TEMP_RANGE_FROM_REG(reg) + \
164 AUTO_TEMP_MIN_FROM_REG(reg))
166 static int AUTO_TEMP_MAX_TO_REG(int val, int reg, int pwm)
169 int range = val - AUTO_TEMP_MIN_FROM_REG(reg);
171 range = ((val - AUTO_TEMP_MIN_FROM_REG(reg))*10)/(16 - pwm);
172 ret = ((reg & 0xf8) |
175 range < 40000 ? 2 : range < 80000 ? 3 : 4));
179 /* FAN auto control */
180 #define GET_FAN_AUTO_BITFIELD(data, idx) \
181 (*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx%2]
183 /* The tables below contains the possible values for the auto fan
184 * control bitfields. the index in the table is the register value.
185 * MSb is the auto fan control enable bit, so the four first entries
186 * in the table disables auto fan control when both bitfields are zero.
188 static auto_chan_table_t auto_channel_select_table_adm1031 = {
189 {0, 0}, {0, 0}, {0, 0}, {0, 0},
190 {2 /*0b010 */ , 4 /*0b100 */ },
191 {2 /*0b010 */ , 2 /*0b010 */ },
192 {4 /*0b100 */ , 4 /*0b100 */ },
193 {7 /*0b111 */ , 7 /*0b111 */ },
196 static auto_chan_table_t auto_channel_select_table_adm1030 = {
197 {0, 0}, {0, 0}, {0, 0}, {0, 0},
199 {0xff /*invalid */ , 0},
200 {0xff /*invalid */ , 0},
204 /* That function checks if a bitfield is valid and returns the other bitfield
205 * nearest match if no exact match where found.
208 get_fan_auto_nearest(struct adm1031_data *data,
209 int chan, u8 val, u8 reg, u8 * new_reg)
212 int first_match = -1, exact_match = -1;
214 (*data->chan_select_table)[FAN_CHAN_FROM_REG(reg)][chan ? 0 : 1];
221 for (i = 0; i < 8; i++) {
222 if ((val == (*data->chan_select_table)[i][chan]) &&
223 ((*data->chan_select_table)[i][chan ? 0 : 1] ==
225 /* We found an exact match */
228 } else if (val == (*data->chan_select_table)[i][chan] &&
230 /* Save the first match in case of an exact match has not been
237 if (exact_match >= 0) {
238 *new_reg = exact_match;
239 } else if (first_match >= 0) {
240 *new_reg = first_match;
247 static ssize_t show_fan_auto_channel(struct device *dev, char *buf, int nr)
249 struct adm1031_data *data = adm1031_update_device(dev);
250 return sprintf(buf, "%d\n", GET_FAN_AUTO_BITFIELD(data, nr));
254 set_fan_auto_channel(struct device *dev, const char *buf, size_t count, int nr)
256 struct i2c_client *client = to_i2c_client(dev);
257 struct adm1031_data *data = i2c_get_clientdata(client);
263 old_fan_mode = data->conf1;
265 down(&data->update_lock);
266 val = simple_strtol(buf, NULL, 10);
268 if ((ret = get_fan_auto_nearest(data, nr, val, data->conf1, ®))) {
269 up(&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 up(&data->update_lock);
296 #define fan_auto_channel_offset(offset) \
297 static ssize_t show_fan_auto_channel_##offset (struct device *dev, char *buf) \
299 return show_fan_auto_channel(dev, buf, offset - 1); \
301 static ssize_t set_fan_auto_channel_##offset (struct device *dev, \
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);
333 down(&data->update_lock);
334 val = simple_strtol(buf, NULL, 10);
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 up(&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);
354 down(&data->update_lock);
355 val = simple_strtol(buf, NULL, 10);
356 data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr], data->pwm[nr]);
357 adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
359 up(&data->update_lock);
363 #define auto_temp_reg(offset) \
364 static ssize_t show_auto_temp_##offset##_off (struct device *dev, char *buf) \
366 return show_auto_temp_off(dev, buf, offset - 1); \
368 static ssize_t show_auto_temp_##offset##_min (struct device *dev, char *buf) \
370 return show_auto_temp_min(dev, buf, offset - 1); \
372 static ssize_t show_auto_temp_##offset##_max (struct device *dev, char *buf) \
374 return show_auto_temp_max(dev, buf, offset - 1); \
376 static ssize_t set_auto_temp_##offset##_min (struct device *dev, \
377 const char *buf, size_t count) \
379 return set_auto_temp_min(dev, buf, count, offset - 1); \
381 static ssize_t set_auto_temp_##offset##_max (struct device *dev, \
382 const char *buf, size_t count) \
384 return set_auto_temp_max(dev, buf, count, offset - 1); \
386 static DEVICE_ATTR(auto_temp##offset##_off, S_IRUGO, \
387 show_auto_temp_##offset##_off, NULL); \
388 static DEVICE_ATTR(auto_temp##offset##_min, S_IRUGO | S_IWUSR, \
389 show_auto_temp_##offset##_min, set_auto_temp_##offset##_min);\
390 static DEVICE_ATTR(auto_temp##offset##_max, S_IRUGO | S_IWUSR, \
391 show_auto_temp_##offset##_max, set_auto_temp_##offset##_max)
398 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
400 struct adm1031_data *data = adm1031_update_device(dev);
401 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
404 set_pwm(struct device *dev, const char *buf, size_t count, int nr)
406 struct i2c_client *client = to_i2c_client(dev);
407 struct adm1031_data *data = i2c_get_clientdata(client);
410 down(&data->update_lock);
411 val = simple_strtol(buf, NULL, 10);
412 if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) &&
413 (((val>>4) & 0xf) != 5)) {
414 /* In automatic mode, the only PWM accepted is 33% */
415 up(&data->update_lock);
418 data->pwm[nr] = PWM_TO_REG(val);
419 reg = adm1031_read_value(client, ADM1031_REG_PWM);
420 adm1031_write_value(client, ADM1031_REG_PWM,
421 nr ? ((data->pwm[nr] << 4) & 0xf0) | (reg & 0xf)
422 : (data->pwm[nr] & 0xf) | (reg & 0xf0));
423 up(&data->update_lock);
427 #define pwm_reg(offset) \
428 static ssize_t show_pwm_##offset (struct device *dev, char *buf) \
430 return show_pwm(dev, buf, offset - 1); \
432 static ssize_t set_pwm_##offset (struct device *dev, \
433 const char *buf, size_t count) \
435 return set_pwm(dev, buf, count, offset - 1); \
437 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
438 show_pwm_##offset, set_pwm_##offset)
446 * That function checks the cases where the fan reading is not
447 * relevent. It is used to provide 0 as fan reading when the fan is
448 * not supposed to run
450 static int trust_fan_readings(struct adm1031_data *data, int chan)
454 if (data->conf1 & ADM1031_CONF1_AUTO_MODE) {
455 switch (data->conf1 & 0x60) {
456 case 0x00: /* remote temp1 controls fan1 remote temp2 controls fan2 */
457 res = data->temp[chan+1] >=
458 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]);
460 case 0x20: /* remote temp1 controls both fans */
463 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]);
465 case 0x40: /* remote temp2 controls both fans */
468 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]);
470 case 0x60: /* max controls both fans */
473 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[0])
475 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1])
476 || (data->chip_type == adm1031
478 AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]));
482 res = data->pwm[chan] > 0;
488 static ssize_t show_fan(struct device *dev, char *buf, int nr)
490 struct adm1031_data *data = adm1031_update_device(dev);
493 value = trust_fan_readings(data, nr) ? FAN_FROM_REG(data->fan[nr],
494 FAN_DIV_FROM_REG(data->fan_div[nr])) : 0;
495 return sprintf(buf, "%d\n", value);
498 static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
500 struct adm1031_data *data = adm1031_update_device(dev);
501 return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[nr]));
503 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
505 struct adm1031_data *data = adm1031_update_device(dev);
506 return sprintf(buf, "%d\n",
507 FAN_FROM_REG(data->fan_min[nr],
508 FAN_DIV_FROM_REG(data->fan_div[nr])));
511 set_fan_min(struct device *dev, const char *buf, size_t count, int nr)
513 struct i2c_client *client = to_i2c_client(dev);
514 struct adm1031_data *data = i2c_get_clientdata(client);
517 down(&data->update_lock);
518 val = simple_strtol(buf, NULL, 10);
521 FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr]));
523 data->fan_min[nr] = 0xff;
525 adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), data->fan_min[nr]);
526 up(&data->update_lock);
530 set_fan_div(struct device *dev, const char *buf, size_t count, int nr)
532 struct i2c_client *client = to_i2c_client(dev);
533 struct adm1031_data *data = i2c_get_clientdata(client);
536 int old_div = FAN_DIV_FROM_REG(data->fan_div[nr]);
539 val = simple_strtol(buf, NULL, 10);
540 tmp = val == 8 ? 0xc0 :
547 down(&data->update_lock);
548 data->fan_div[nr] = (tmp & 0xC0) | (0x3f & data->fan_div[nr]);
549 new_min = data->fan_min[nr] * old_div /
550 FAN_DIV_FROM_REG(data->fan_div[nr]);
551 data->fan_min[nr] = new_min > 0xff ? 0xff : new_min;
552 data->fan[nr] = data->fan[nr] * old_div /
553 FAN_DIV_FROM_REG(data->fan_div[nr]);
555 adm1031_write_value(client, ADM1031_REG_FAN_DIV(nr),
557 adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr),
559 up(&data->update_lock);
563 #define fan_offset(offset) \
564 static ssize_t show_fan_##offset (struct device *dev, char *buf) \
566 return show_fan(dev, buf, offset - 1); \
568 static ssize_t show_fan_##offset##_min (struct device *dev, char *buf) \
570 return show_fan_min(dev, buf, offset - 1); \
572 static ssize_t show_fan_##offset##_div (struct device *dev, char *buf) \
574 return show_fan_div(dev, buf, offset - 1); \
576 static ssize_t set_fan_##offset##_min (struct device *dev, \
577 const char *buf, size_t count) \
579 return set_fan_min(dev, buf, count, offset - 1); \
581 static ssize_t set_fan_##offset##_div (struct device *dev, \
582 const char *buf, size_t count) \
584 return set_fan_div(dev, buf, count, offset - 1); \
586 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
588 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
589 show_fan_##offset##_min, set_fan_##offset##_min); \
590 static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
591 show_fan_##offset##_div, set_fan_##offset##_div); \
592 static DEVICE_ATTR(auto_fan##offset##_min_pwm, S_IRUGO | S_IWUSR, \
593 show_pwm_##offset, set_pwm_##offset)
600 static ssize_t show_temp(struct device *dev, char *buf, int nr)
602 struct adm1031_data *data = adm1031_update_device(dev);
605 ((data->ext_temp[nr] >> 6) & 0x3) * 2 :
606 (((data->ext_temp[nr] >> ((nr - 1) * 3)) & 7));
607 return sprintf(buf, "%d\n", TEMP_FROM_REG_EXT(data->temp[nr], ext));
609 static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
611 struct adm1031_data *data = adm1031_update_device(dev);
612 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
614 static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
616 struct adm1031_data *data = adm1031_update_device(dev);
617 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
619 static ssize_t show_temp_crit(struct device *dev, char *buf, int nr)
621 struct adm1031_data *data = adm1031_update_device(dev);
622 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
625 set_temp_min(struct device *dev, const char *buf, size_t count, int nr)
627 struct i2c_client *client = to_i2c_client(dev);
628 struct adm1031_data *data = i2c_get_clientdata(client);
631 val = simple_strtol(buf, NULL, 10);
632 val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
633 down(&data->update_lock);
634 data->temp_min[nr] = TEMP_TO_REG(val);
635 adm1031_write_value(client, ADM1031_REG_TEMP_MIN(nr),
637 up(&data->update_lock);
641 set_temp_max(struct device *dev, const char *buf, size_t count, int nr)
643 struct i2c_client *client = to_i2c_client(dev);
644 struct adm1031_data *data = i2c_get_clientdata(client);
647 val = simple_strtol(buf, NULL, 10);
648 val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
649 down(&data->update_lock);
650 data->temp_max[nr] = TEMP_TO_REG(val);
651 adm1031_write_value(client, ADM1031_REG_TEMP_MAX(nr),
653 up(&data->update_lock);
657 set_temp_crit(struct device *dev, const char *buf, size_t count, int nr)
659 struct i2c_client *client = to_i2c_client(dev);
660 struct adm1031_data *data = i2c_get_clientdata(client);
663 val = simple_strtol(buf, NULL, 10);
664 val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
665 down(&data->update_lock);
666 data->temp_crit[nr] = TEMP_TO_REG(val);
667 adm1031_write_value(client, ADM1031_REG_TEMP_CRIT(nr),
668 data->temp_crit[nr]);
669 up(&data->update_lock);
673 #define temp_reg(offset) \
674 static ssize_t show_temp_##offset (struct device *dev, char *buf) \
676 return show_temp(dev, buf, offset - 1); \
678 static ssize_t show_temp_##offset##_min (struct device *dev, char *buf) \
680 return show_temp_min(dev, buf, offset - 1); \
682 static ssize_t show_temp_##offset##_max (struct device *dev, char *buf) \
684 return show_temp_max(dev, buf, offset - 1); \
686 static ssize_t show_temp_##offset##_crit (struct device *dev, char *buf) \
688 return show_temp_crit(dev, buf, offset - 1); \
690 static ssize_t set_temp_##offset##_min (struct device *dev, \
691 const char *buf, size_t count) \
693 return set_temp_min(dev, buf, count, offset - 1); \
695 static ssize_t set_temp_##offset##_max (struct device *dev, \
696 const char *buf, size_t count) \
698 return set_temp_max(dev, buf, count, offset - 1); \
700 static ssize_t set_temp_##offset##_crit (struct device *dev, \
701 const char *buf, size_t count) \
703 return set_temp_crit(dev, buf, count, offset - 1); \
705 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
707 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
708 show_temp_##offset##_min, set_temp_##offset##_min); \
709 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
710 show_temp_##offset##_max, set_temp_##offset##_max); \
711 static DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR, \
712 show_temp_##offset##_crit, set_temp_##offset##_crit)
719 static ssize_t show_alarms(struct device *dev, char *buf)
721 struct adm1031_data *data = adm1031_update_device(dev);
722 return sprintf(buf, "%d\n", data->alarm);
725 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
728 static int adm1031_attach_adapter(struct i2c_adapter *adapter)
730 if (!(adapter->class & I2C_CLASS_HWMON))
732 return i2c_detect(adapter, &addr_data, adm1031_detect);
735 /* This function is called by i2c_detect */
736 static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
738 struct i2c_client *new_client;
739 struct adm1031_data *data;
741 const char *name = "";
743 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
746 if (!(data = kmalloc(sizeof(struct adm1031_data), GFP_KERNEL))) {
750 memset(data, 0, sizeof(struct adm1031_data));
752 new_client = &data->client;
753 i2c_set_clientdata(new_client, data);
754 new_client->addr = address;
755 new_client->adapter = adapter;
756 new_client->driver = &adm1031_driver;
757 new_client->flags = 0;
761 id = i2c_smbus_read_byte_data(new_client, 0x3d);
762 co = i2c_smbus_read_byte_data(new_client, 0x3e);
764 if (!((id == 0x31 || id == 0x30) && co == 0x41))
766 kind = (id == 0x30) ? adm1030 : adm1031;
772 /* Given the detected chip type, set the chip name and the
773 * auto fan control helper table. */
774 if (kind == adm1030) {
776 data->chan_select_table = &auto_channel_select_table_adm1030;
777 } else if (kind == adm1031) {
779 data->chan_select_table = &auto_channel_select_table_adm1031;
781 data->chip_type = kind;
783 strlcpy(new_client->name, name, I2C_NAME_SIZE);
785 new_client->id = adm1031_id++;
787 init_MUTEX(&data->update_lock);
789 /* Tell the I2C layer a new client has arrived */
790 if ((err = i2c_attach_client(new_client)))
793 /* Initialize the ADM1031 chip */
794 adm1031_init_client(new_client);
796 /* Register sysfs hooks */
797 device_create_file(&new_client->dev, &dev_attr_fan1_input);
798 device_create_file(&new_client->dev, &dev_attr_fan1_div);
799 device_create_file(&new_client->dev, &dev_attr_fan1_min);
800 device_create_file(&new_client->dev, &dev_attr_pwm1);
801 device_create_file(&new_client->dev, &dev_attr_auto_fan1_channel);
802 device_create_file(&new_client->dev, &dev_attr_temp1_input);
803 device_create_file(&new_client->dev, &dev_attr_temp1_min);
804 device_create_file(&new_client->dev, &dev_attr_temp1_max);
805 device_create_file(&new_client->dev, &dev_attr_temp1_crit);
806 device_create_file(&new_client->dev, &dev_attr_temp2_input);
807 device_create_file(&new_client->dev, &dev_attr_temp2_min);
808 device_create_file(&new_client->dev, &dev_attr_temp2_max);
809 device_create_file(&new_client->dev, &dev_attr_temp2_crit);
811 device_create_file(&new_client->dev, &dev_attr_auto_temp1_off);
812 device_create_file(&new_client->dev, &dev_attr_auto_temp1_min);
813 device_create_file(&new_client->dev, &dev_attr_auto_temp1_max);
815 device_create_file(&new_client->dev, &dev_attr_auto_temp2_off);
816 device_create_file(&new_client->dev, &dev_attr_auto_temp2_min);
817 device_create_file(&new_client->dev, &dev_attr_auto_temp2_max);
819 device_create_file(&new_client->dev, &dev_attr_auto_fan1_min_pwm);
821 device_create_file(&new_client->dev, &dev_attr_alarms);
823 if (kind == adm1031) {
824 device_create_file(&new_client->dev, &dev_attr_fan2_input);
825 device_create_file(&new_client->dev, &dev_attr_fan2_div);
826 device_create_file(&new_client->dev, &dev_attr_fan2_min);
827 device_create_file(&new_client->dev, &dev_attr_pwm2);
828 device_create_file(&new_client->dev,
829 &dev_attr_auto_fan2_channel);
830 device_create_file(&new_client->dev, &dev_attr_temp3_input);
831 device_create_file(&new_client->dev, &dev_attr_temp3_min);
832 device_create_file(&new_client->dev, &dev_attr_temp3_max);
833 device_create_file(&new_client->dev, &dev_attr_temp3_crit);
834 device_create_file(&new_client->dev, &dev_attr_auto_temp3_off);
835 device_create_file(&new_client->dev, &dev_attr_auto_temp3_min);
836 device_create_file(&new_client->dev, &dev_attr_auto_temp3_max);
837 device_create_file(&new_client->dev, &dev_attr_auto_fan2_min_pwm);
848 static int adm1031_detach_client(struct i2c_client *client)
851 if ((ret = i2c_detach_client(client)) != 0) {
858 static void adm1031_init_client(struct i2c_client *client)
860 unsigned int read_val;
862 struct adm1031_data *data = i2c_get_clientdata(client);
864 mask = (ADM1031_CONF2_PWM1_ENABLE | ADM1031_CONF2_TACH1_ENABLE);
865 if (data->chip_type == adm1031) {
866 mask |= (ADM1031_CONF2_PWM2_ENABLE |
867 ADM1031_CONF2_TACH2_ENABLE);
869 /* Initialize the ADM1031 chip (enables fan speed reading ) */
870 read_val = adm1031_read_value(client, ADM1031_REG_CONF2);
871 if ((read_val | mask) != read_val) {
872 adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask);
875 read_val = adm1031_read_value(client, ADM1031_REG_CONF1);
876 if ((read_val | ADM1031_CONF1_MONITOR_ENABLE) != read_val) {
877 adm1031_write_value(client, ADM1031_REG_CONF1, read_val |
878 ADM1031_CONF1_MONITOR_ENABLE);
883 static struct adm1031_data *adm1031_update_device(struct device *dev)
885 struct i2c_client *client = to_i2c_client(dev);
886 struct adm1031_data *data = i2c_get_clientdata(client);
889 down(&data->update_lock);
891 if ((jiffies - data->last_updated > HZ + HZ / 2) ||
892 (jiffies < data->last_updated) || !data->valid) {
894 dev_dbg(&client->dev, "Starting adm1031 update\n");
896 chan < ((data->chip_type == adm1031) ? 3 : 2); chan++) {
900 adm1031_read_value(client, ADM1031_REG_TEMP(chan));
901 data->ext_temp[chan] =
902 adm1031_read_value(client, ADM1031_REG_EXT_TEMP);
904 adm1031_read_value(client, ADM1031_REG_TEMP(chan));
906 data->ext_temp[chan] =
907 adm1031_read_value(client,
908 ADM1031_REG_EXT_TEMP);
911 adm1031_read_value(client,
912 ADM1031_REG_TEMP(chan));
914 /* oldh is actually newer */
916 dev_warn(&client->dev,
917 "Remote temperature may be "
921 data->temp[chan] = newh;
923 data->temp_min[chan] =
924 adm1031_read_value(client,
925 ADM1031_REG_TEMP_MIN(chan));
926 data->temp_max[chan] =
927 adm1031_read_value(client,
928 ADM1031_REG_TEMP_MAX(chan));
929 data->temp_crit[chan] =
930 adm1031_read_value(client,
931 ADM1031_REG_TEMP_CRIT(chan));
932 data->auto_temp[chan] =
933 adm1031_read_value(client,
934 ADM1031_REG_AUTO_TEMP(chan));
938 data->conf1 = adm1031_read_value(client, ADM1031_REG_CONF1);
939 data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2);
941 data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0))
942 | (adm1031_read_value(client, ADM1031_REG_STATUS(1))
944 if (data->chip_type == adm1030) {
945 data->alarm &= 0xc0ff;
948 for (chan=0; chan<(data->chip_type == adm1030 ? 1 : 2); chan++) {
949 data->fan_div[chan] =
950 adm1031_read_value(client, ADM1031_REG_FAN_DIV(chan));
951 data->fan_min[chan] =
952 adm1031_read_value(client, ADM1031_REG_FAN_MIN(chan));
954 adm1031_read_value(client, ADM1031_REG_FAN_SPEED(chan));
956 0xf & (adm1031_read_value(client, ADM1031_REG_PWM) >>
959 data->last_updated = jiffies;
963 up(&data->update_lock);
968 static int __init sensors_adm1031_init(void)
970 return i2c_add_driver(&adm1031_driver);
973 static void __exit sensors_adm1031_exit(void)
975 i2c_del_driver(&adm1031_driver);
978 MODULE_AUTHOR("Alexandre d'Alton <alex@alexdalton.org>");
979 MODULE_DESCRIPTION("ADM1031/ADM1030 driver");
980 MODULE_LICENSE("GPL");
982 module_init(sensors_adm1031_init);
983 module_exit(sensors_adm1031_exit);