2 w83627ehf - Driver for the hardware monitoring functionality of
3 the Winbond W83627EHF Super-I/O chip
4 Copyright (C) 2005 Jean Delvare <khali@linux-fr.org>
5 Copyright (C) 2006 Yuan Mu (Winbond),
6 Rudolf Marek <r.marek@sh.cvut.cz>
7 David Hubbard <david.c.hubbard@gmail.com>
9 Shamelessly ripped from the w83627hf driver
10 Copyright (C) 2003 Mark Studebaker
12 Thanks to Leon Moonen, Steve Cliffe and Grant Coady for their help
13 in testing and debugging this driver.
15 This driver also supports the W83627EHG, which is the lead-free
16 version of the W83627EHF.
18 This program is free software; you can redistribute it and/or modify
19 it under the terms of the GNU General Public License as published by
20 the Free Software Foundation; either version 2 of the License, or
21 (at your option) any later version.
23 This program is distributed in the hope that it will be useful,
24 but WITHOUT ANY WARRANTY; without even the implied warranty of
25 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 GNU General Public License for more details.
28 You should have received a copy of the GNU General Public License
29 along with this program; if not, write to the Free Software
30 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 Supports the following chips:
35 Chip #vin #fan #pwm #temp chip_id man_id
36 w83627ehf 10 5 4 3 0x88,0xa1 0x5ca3
39 #include <linux/module.h>
40 #include <linux/init.h>
41 #include <linux/slab.h>
42 #include <linux/i2c.h>
43 #include <linux/i2c-isa.h>
44 #include <linux/hwmon.h>
45 #include <linux/hwmon-sysfs.h>
46 #include <linux/err.h>
47 #include <linux/mutex.h>
51 /* The actual ISA address is read from Super-I/O configuration space */
52 static unsigned short address;
55 * Super-I/O constants and functions
58 static int REG; /* The register to read/write */
59 static int VAL; /* The value to read/write */
61 #define W83627EHF_LD_HWM 0x0b
63 #define SIO_REG_LDSEL 0x07 /* Logical device select */
64 #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
65 #define SIO_REG_ENABLE 0x30 /* Logical device enable */
66 #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
68 #define SIO_W83627EHF_ID 0x8840
69 #define SIO_ID_MASK 0xFFC0
72 superio_outb(int reg, int val)
86 superio_select(int ld)
88 outb(SIO_REG_LDSEL, REG);
110 #define REGION_ALIGNMENT ~7
111 #define REGION_OFFSET 5
112 #define REGION_LENGTH 2
113 #define ADDR_REG_OFFSET 5
114 #define DATA_REG_OFFSET 6
116 #define W83627EHF_REG_BANK 0x4E
117 #define W83627EHF_REG_CONFIG 0x40
118 #define W83627EHF_REG_CHIP_ID 0x49
119 #define W83627EHF_REG_MAN_ID 0x4F
121 static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 };
122 static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c };
124 /* The W83627EHF registers for nr=7,8,9 are in bank 5 */
125 #define W83627EHF_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
126 (0x554 + (((nr) - 7) * 2)))
127 #define W83627EHF_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
128 (0x555 + (((nr) - 7) * 2)))
129 #define W83627EHF_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
132 #define W83627EHF_REG_TEMP1 0x27
133 #define W83627EHF_REG_TEMP1_HYST 0x3a
134 #define W83627EHF_REG_TEMP1_OVER 0x39
135 static const u16 W83627EHF_REG_TEMP[] = { 0x150, 0x250 };
136 static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x153, 0x253 };
137 static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x155, 0x255 };
138 static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 };
140 /* Fan clock dividers are spread over the following five registers */
141 #define W83627EHF_REG_FANDIV1 0x47
142 #define W83627EHF_REG_FANDIV2 0x4B
143 #define W83627EHF_REG_VBAT 0x5D
144 #define W83627EHF_REG_DIODE 0x59
145 #define W83627EHF_REG_SMI_OVT 0x4C
147 #define W83627EHF_REG_ALARM1 0x459
148 #define W83627EHF_REG_ALARM2 0x45A
149 #define W83627EHF_REG_ALARM3 0x45B
151 /* SmartFan registers */
152 /* DC or PWM output fan configuration */
153 static const u8 W83627EHF_REG_PWM_ENABLE[] = {
154 0x04, /* SYS FAN0 output mode and PWM mode */
155 0x04, /* CPU FAN0 output mode and PWM mode */
156 0x12, /* AUX FAN mode */
157 0x62, /* CPU fan1 mode */
160 static const u8 W83627EHF_PWM_MODE_SHIFT[] = { 0, 1, 0, 6 };
161 static const u8 W83627EHF_PWM_ENABLE_SHIFT[] = { 2, 4, 1, 4 };
163 /* FAN Duty Cycle, be used to control */
164 static const u8 W83627EHF_REG_PWM[] = { 0x01, 0x03, 0x11, 0x61 };
165 static const u8 W83627EHF_REG_TARGET[] = { 0x05, 0x06, 0x13, 0x63 };
166 static const u8 W83627EHF_REG_TOLERANCE[] = { 0x07, 0x07, 0x14, 0x62 };
169 /* Advanced Fan control, some values are common for all fans */
170 static const u8 W83627EHF_REG_FAN_MIN_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 };
171 static const u8 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0C, 0x0D, 0x17, 0x66 };
177 /* 1 is PWM mode, output in ms */
178 static inline unsigned int step_time_from_reg(u8 reg, u8 mode)
180 return mode ? 100 * reg : 400 * reg;
183 static inline u8 step_time_to_reg(unsigned int msec, u8 mode)
185 return SENSORS_LIMIT((mode ? (msec + 50) / 100 :
186 (msec + 200) / 400), 1, 255);
189 static inline unsigned int
190 fan_from_reg(u8 reg, unsigned int div)
192 if (reg == 0 || reg == 255)
194 return 1350000U / (reg * div);
197 static inline unsigned int
204 temp1_from_reg(s8 reg)
210 temp1_to_reg(int temp, int min, int max)
217 return (temp - 500) / 1000;
218 return (temp + 500) / 1000;
221 /* Some of analog inputs have internal scaling (2x), 8mV is ADC LSB */
223 static u8 scale_in[10] = { 8, 8, 16, 16, 8, 8, 8, 16, 16, 8 };
225 static inline long in_from_reg(u8 reg, u8 nr)
227 return reg * scale_in[nr];
230 static inline u8 in_to_reg(u32 val, u8 nr)
232 return SENSORS_LIMIT(((val + (scale_in[nr] / 2)) / scale_in[nr]), 0, 255);
236 * Data structures and manipulation thereof
239 struct w83627ehf_data {
240 struct i2c_client client;
241 struct class_device *class_dev;
244 struct mutex update_lock;
245 char valid; /* !=0 if following fields are valid */
246 unsigned long last_updated; /* In jiffies */
248 /* Register values */
249 u8 in[10]; /* Register value */
250 u8 in_max[10]; /* Register value */
251 u8 in_min[10]; /* Register value */
255 u8 has_fan; /* some fan inputs can be disabled */
261 s16 temp_max_hyst[2];
264 u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
265 u8 pwm_enable[4]; /* 1->manual
266 2->thermal cruise (also called SmartFan I) */
271 u8 fan_min_output[4]; /* minimum fan speed */
275 static inline int is_word_sized(u16 reg)
277 return (((reg & 0xff00) == 0x100
278 || (reg & 0xff00) == 0x200)
279 && ((reg & 0x00ff) == 0x50
280 || (reg & 0x00ff) == 0x53
281 || (reg & 0x00ff) == 0x55));
284 /* We assume that the default bank is 0, thus the following two functions do
285 nothing for registers which live in bank 0. For others, they respectively
286 set the bank register to the correct value (before the register is
287 accessed), and back to 0 (afterwards). */
288 static inline void w83627ehf_set_bank(struct i2c_client *client, u16 reg)
291 outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET);
292 outb_p(reg >> 8, client->addr + DATA_REG_OFFSET);
296 static inline void w83627ehf_reset_bank(struct i2c_client *client, u16 reg)
299 outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET);
300 outb_p(0, client->addr + DATA_REG_OFFSET);
304 static u16 w83627ehf_read_value(struct i2c_client *client, u16 reg)
306 struct w83627ehf_data *data = i2c_get_clientdata(client);
307 int res, word_sized = is_word_sized(reg);
309 mutex_lock(&data->lock);
311 w83627ehf_set_bank(client, reg);
312 outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET);
313 res = inb_p(client->addr + DATA_REG_OFFSET);
315 outb_p((reg & 0xff) + 1,
316 client->addr + ADDR_REG_OFFSET);
317 res = (res << 8) + inb_p(client->addr + DATA_REG_OFFSET);
319 w83627ehf_reset_bank(client, reg);
321 mutex_unlock(&data->lock);
326 static int w83627ehf_write_value(struct i2c_client *client, u16 reg, u16 value)
328 struct w83627ehf_data *data = i2c_get_clientdata(client);
329 int word_sized = is_word_sized(reg);
331 mutex_lock(&data->lock);
333 w83627ehf_set_bank(client, reg);
334 outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET);
336 outb_p(value >> 8, client->addr + DATA_REG_OFFSET);
337 outb_p((reg & 0xff) + 1,
338 client->addr + ADDR_REG_OFFSET);
340 outb_p(value & 0xff, client->addr + DATA_REG_OFFSET);
341 w83627ehf_reset_bank(client, reg);
343 mutex_unlock(&data->lock);
347 /* This function assumes that the caller holds data->update_lock */
348 static void w83627ehf_write_fan_div(struct i2c_client *client, int nr)
350 struct w83627ehf_data *data = i2c_get_clientdata(client);
355 reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0xcf)
356 | ((data->fan_div[0] & 0x03) << 4);
357 w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg);
358 reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xdf)
359 | ((data->fan_div[0] & 0x04) << 3);
360 w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg);
363 reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0x3f)
364 | ((data->fan_div[1] & 0x03) << 6);
365 w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg);
366 reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xbf)
367 | ((data->fan_div[1] & 0x04) << 4);
368 w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg);
371 reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV2) & 0x3f)
372 | ((data->fan_div[2] & 0x03) << 6);
373 w83627ehf_write_value(client, W83627EHF_REG_FANDIV2, reg);
374 reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0x7f)
375 | ((data->fan_div[2] & 0x04) << 5);
376 w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg);
379 reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0xfc)
380 | (data->fan_div[3] & 0x03);
381 w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg);
382 reg = (w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT) & 0x7f)
383 | ((data->fan_div[3] & 0x04) << 5);
384 w83627ehf_write_value(client, W83627EHF_REG_SMI_OVT, reg);
387 reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0x73)
388 | ((data->fan_div[4] & 0x03) << 3)
389 | ((data->fan_div[4] & 0x04) << 5);
390 w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg);
395 static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
397 struct i2c_client *client = to_i2c_client(dev);
398 struct w83627ehf_data *data = i2c_get_clientdata(client);
399 int pwmcfg = 0, tolerance = 0; /* shut up the compiler */
402 mutex_lock(&data->update_lock);
404 if (time_after(jiffies, data->last_updated + HZ)
406 /* Fan clock dividers */
407 i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1);
408 data->fan_div[0] = (i >> 4) & 0x03;
409 data->fan_div[1] = (i >> 6) & 0x03;
410 i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV2);
411 data->fan_div[2] = (i >> 6) & 0x03;
412 i = w83627ehf_read_value(client, W83627EHF_REG_VBAT);
413 data->fan_div[0] |= (i >> 3) & 0x04;
414 data->fan_div[1] |= (i >> 4) & 0x04;
415 data->fan_div[2] |= (i >> 5) & 0x04;
416 if (data->has_fan & ((1 << 3) | (1 << 4))) {
417 i = w83627ehf_read_value(client, W83627EHF_REG_DIODE);
418 data->fan_div[3] = i & 0x03;
419 data->fan_div[4] = ((i >> 2) & 0x03)
422 if (data->has_fan & (1 << 3)) {
423 i = w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT);
424 data->fan_div[3] |= (i >> 5) & 0x04;
427 /* Measured voltages and limits */
428 for (i = 0; i < 10; i++) {
429 data->in[i] = w83627ehf_read_value(client,
430 W83627EHF_REG_IN(i));
431 data->in_min[i] = w83627ehf_read_value(client,
432 W83627EHF_REG_IN_MIN(i));
433 data->in_max[i] = w83627ehf_read_value(client,
434 W83627EHF_REG_IN_MAX(i));
437 /* Measured fan speeds and limits */
438 for (i = 0; i < 5; i++) {
439 if (!(data->has_fan & (1 << i)))
442 data->fan[i] = w83627ehf_read_value(client,
443 W83627EHF_REG_FAN[i]);
444 data->fan_min[i] = w83627ehf_read_value(client,
445 W83627EHF_REG_FAN_MIN[i]);
447 /* If we failed to measure the fan speed and clock
448 divider can be increased, let's try that for next
450 if (data->fan[i] == 0xff
451 && data->fan_div[i] < 0x07) {
452 dev_dbg(&client->dev, "Increasing fan %d "
453 "clock divider from %u to %u\n",
454 i, div_from_reg(data->fan_div[i]),
455 div_from_reg(data->fan_div[i] + 1));
457 w83627ehf_write_fan_div(client, i);
458 /* Preserve min limit if possible */
459 if (data->fan_min[i] >= 2
460 && data->fan_min[i] != 255)
461 w83627ehf_write_value(client,
462 W83627EHF_REG_FAN_MIN[i],
463 (data->fan_min[i] /= 2));
467 for (i = 0; i < 4; i++) {
468 /* pwmcfg, tolarance mapped for i=0, i=1 to same reg */
470 pwmcfg = w83627ehf_read_value(client,
471 W83627EHF_REG_PWM_ENABLE[i]);
472 tolerance = w83627ehf_read_value(client,
473 W83627EHF_REG_TOLERANCE[i]);
476 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1)
478 data->pwm_enable[i] =
479 ((pwmcfg >> W83627EHF_PWM_ENABLE_SHIFT[i])
481 data->pwm[i] = w83627ehf_read_value(client,
482 W83627EHF_REG_PWM[i]);
483 data->fan_min_output[i] = w83627ehf_read_value(client,
484 W83627EHF_REG_FAN_MIN_OUTPUT[i]);
485 data->fan_stop_time[i] = w83627ehf_read_value(client,
486 W83627EHF_REG_FAN_STOP_TIME[i]);
487 data->target_temp[i] =
488 w83627ehf_read_value(client,
489 W83627EHF_REG_TARGET[i]) &
490 (data->pwm_mode[i] == 1 ? 0x7f : 0xff);
491 data->tolerance[i] = (tolerance >> (i == 1 ? 4 : 0))
495 /* Measured temperatures and limits */
496 data->temp1 = w83627ehf_read_value(client,
497 W83627EHF_REG_TEMP1);
498 data->temp1_max = w83627ehf_read_value(client,
499 W83627EHF_REG_TEMP1_OVER);
500 data->temp1_max_hyst = w83627ehf_read_value(client,
501 W83627EHF_REG_TEMP1_HYST);
502 for (i = 0; i < 2; i++) {
503 data->temp[i] = w83627ehf_read_value(client,
504 W83627EHF_REG_TEMP[i]);
505 data->temp_max[i] = w83627ehf_read_value(client,
506 W83627EHF_REG_TEMP_OVER[i]);
507 data->temp_max_hyst[i] = w83627ehf_read_value(client,
508 W83627EHF_REG_TEMP_HYST[i]);
511 data->alarms = w83627ehf_read_value(client,
512 W83627EHF_REG_ALARM1) |
513 (w83627ehf_read_value(client,
514 W83627EHF_REG_ALARM2) << 8) |
515 (w83627ehf_read_value(client,
516 W83627EHF_REG_ALARM3) << 16);
518 data->last_updated = jiffies;
522 mutex_unlock(&data->update_lock);
527 * Sysfs callback functions
529 #define show_in_reg(reg) \
531 show_##reg(struct device *dev, struct device_attribute *attr, \
534 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
535 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
536 int nr = sensor_attr->index; \
537 return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr)); \
543 #define store_in_reg(REG, reg) \
545 store_in_##reg (struct device *dev, struct device_attribute *attr, \
546 const char *buf, size_t count) \
548 struct i2c_client *client = to_i2c_client(dev); \
549 struct w83627ehf_data *data = i2c_get_clientdata(client); \
550 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
551 int nr = sensor_attr->index; \
552 u32 val = simple_strtoul(buf, NULL, 10); \
554 mutex_lock(&data->update_lock); \
555 data->in_##reg[nr] = in_to_reg(val, nr); \
556 w83627ehf_write_value(client, W83627EHF_REG_IN_##REG(nr), \
557 data->in_##reg[nr]); \
558 mutex_unlock(&data->update_lock); \
562 store_in_reg(MIN, min)
563 store_in_reg(MAX, max)
565 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, char *buf)
567 struct w83627ehf_data *data = w83627ehf_update_device(dev);
568 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
569 int nr = sensor_attr->index;
570 return sprintf(buf, "%u\n", (data->alarms >> nr) & 0x01);
573 static struct sensor_device_attribute sda_in_input[] = {
574 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
575 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
576 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
577 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
578 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
579 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
580 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
581 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
582 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
583 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
586 static struct sensor_device_attribute sda_in_alarm[] = {
587 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
588 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
589 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
590 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
591 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
592 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 21),
593 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 20),
594 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16),
595 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17),
596 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 19),
599 static struct sensor_device_attribute sda_in_min[] = {
600 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
601 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
602 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
603 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
604 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
605 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
606 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
607 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
608 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
609 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
612 static struct sensor_device_attribute sda_in_max[] = {
613 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
614 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
615 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
616 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
617 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
618 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
619 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
620 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
621 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
622 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
625 #define show_fan_reg(reg) \
627 show_##reg(struct device *dev, struct device_attribute *attr, \
630 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
631 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
632 int nr = sensor_attr->index; \
633 return sprintf(buf, "%d\n", \
634 fan_from_reg(data->reg[nr], \
635 div_from_reg(data->fan_div[nr]))); \
638 show_fan_reg(fan_min);
641 show_fan_div(struct device *dev, struct device_attribute *attr,
644 struct w83627ehf_data *data = w83627ehf_update_device(dev);
645 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
646 int nr = sensor_attr->index;
647 return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr]));
651 store_fan_min(struct device *dev, struct device_attribute *attr,
652 const char *buf, size_t count)
654 struct i2c_client *client = to_i2c_client(dev);
655 struct w83627ehf_data *data = i2c_get_clientdata(client);
656 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
657 int nr = sensor_attr->index;
658 unsigned int val = simple_strtoul(buf, NULL, 10);
662 mutex_lock(&data->update_lock);
664 /* No min limit, alarm disabled */
665 data->fan_min[nr] = 255;
666 new_div = data->fan_div[nr]; /* No change */
667 dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1);
668 } else if ((reg = 1350000U / val) >= 128 * 255) {
669 /* Speed below this value cannot possibly be represented,
670 even with the highest divider (128) */
671 data->fan_min[nr] = 254;
672 new_div = 7; /* 128 == (1 << 7) */
673 dev_warn(dev, "fan%u low limit %u below minimum %u, set to "
674 "minimum\n", nr + 1, val, fan_from_reg(254, 128));
676 /* Speed above this value cannot possibly be represented,
677 even with the lowest divider (1) */
678 data->fan_min[nr] = 1;
679 new_div = 0; /* 1 == (1 << 0) */
680 dev_warn(dev, "fan%u low limit %u above maximum %u, set to "
681 "maximum\n", nr + 1, val, fan_from_reg(1, 1));
683 /* Automatically pick the best divider, i.e. the one such
684 that the min limit will correspond to a register value
685 in the 96..192 range */
687 while (reg > 192 && new_div < 7) {
691 data->fan_min[nr] = reg;
694 /* Write both the fan clock divider (if it changed) and the new
695 fan min (unconditionally) */
696 if (new_div != data->fan_div[nr]) {
697 if (new_div > data->fan_div[nr])
698 data->fan[nr] >>= (data->fan_div[nr] - new_div);
700 data->fan[nr] <<= (new_div - data->fan_div[nr]);
702 dev_dbg(dev, "fan%u clock divider changed from %u to %u\n",
703 nr + 1, div_from_reg(data->fan_div[nr]),
704 div_from_reg(new_div));
705 data->fan_div[nr] = new_div;
706 w83627ehf_write_fan_div(client, nr);
708 w83627ehf_write_value(client, W83627EHF_REG_FAN_MIN[nr],
710 mutex_unlock(&data->update_lock);
715 static struct sensor_device_attribute sda_fan_input[] = {
716 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
717 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
718 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
719 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
720 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
723 static struct sensor_device_attribute sda_fan_alarm[] = {
724 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
725 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
726 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
727 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 10),
728 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 23),
731 static struct sensor_device_attribute sda_fan_min[] = {
732 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
734 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
736 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
738 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
740 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
744 static struct sensor_device_attribute sda_fan_div[] = {
745 SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
746 SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
747 SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
748 SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3),
749 SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4),
752 #define show_temp1_reg(reg) \
754 show_##reg(struct device *dev, struct device_attribute *attr, \
757 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
758 return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \
760 show_temp1_reg(temp1);
761 show_temp1_reg(temp1_max);
762 show_temp1_reg(temp1_max_hyst);
764 #define store_temp1_reg(REG, reg) \
766 store_temp1_##reg(struct device *dev, struct device_attribute *attr, \
767 const char *buf, size_t count) \
769 struct i2c_client *client = to_i2c_client(dev); \
770 struct w83627ehf_data *data = i2c_get_clientdata(client); \
771 u32 val = simple_strtoul(buf, NULL, 10); \
773 mutex_lock(&data->update_lock); \
774 data->temp1_##reg = temp1_to_reg(val, -128000, 127000); \
775 w83627ehf_write_value(client, W83627EHF_REG_TEMP1_##REG, \
776 data->temp1_##reg); \
777 mutex_unlock(&data->update_lock); \
780 store_temp1_reg(OVER, max);
781 store_temp1_reg(HYST, max_hyst);
783 #define show_temp_reg(reg) \
785 show_##reg(struct device *dev, struct device_attribute *attr, \
788 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
789 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
790 int nr = sensor_attr->index; \
791 return sprintf(buf, "%d\n", \
792 LM75_TEMP_FROM_REG(data->reg[nr])); \
795 show_temp_reg(temp_max);
796 show_temp_reg(temp_max_hyst);
798 #define store_temp_reg(REG, reg) \
800 store_##reg(struct device *dev, struct device_attribute *attr, \
801 const char *buf, size_t count) \
803 struct i2c_client *client = to_i2c_client(dev); \
804 struct w83627ehf_data *data = i2c_get_clientdata(client); \
805 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
806 int nr = sensor_attr->index; \
807 u32 val = simple_strtoul(buf, NULL, 10); \
809 mutex_lock(&data->update_lock); \
810 data->reg[nr] = LM75_TEMP_TO_REG(val); \
811 w83627ehf_write_value(client, W83627EHF_REG_TEMP_##REG[nr], \
813 mutex_unlock(&data->update_lock); \
816 store_temp_reg(OVER, temp_max);
817 store_temp_reg(HYST, temp_max_hyst);
819 static struct sensor_device_attribute sda_temp[] = {
820 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0),
821 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 0),
822 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 1),
823 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1_max,
825 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max,
827 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max,
829 SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1_max_hyst,
830 store_temp1_max_hyst, 0),
831 SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
832 store_temp_max_hyst, 0),
833 SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
834 store_temp_max_hyst, 1),
835 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
836 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
837 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
840 #define show_pwm_reg(reg) \
841 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
844 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
845 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
846 int nr = sensor_attr->index; \
847 return sprintf(buf, "%d\n", data->reg[nr]); \
850 show_pwm_reg(pwm_mode)
851 show_pwm_reg(pwm_enable)
855 store_pwm_mode(struct device *dev, struct device_attribute *attr,
856 const char *buf, size_t count)
858 struct i2c_client *client = to_i2c_client(dev);
859 struct w83627ehf_data *data = i2c_get_clientdata(client);
860 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
861 int nr = sensor_attr->index;
862 u32 val = simple_strtoul(buf, NULL, 10);
867 mutex_lock(&data->update_lock);
868 reg = w83627ehf_read_value(client, W83627EHF_REG_PWM_ENABLE[nr]);
869 data->pwm_mode[nr] = val;
870 reg &= ~(1 << W83627EHF_PWM_MODE_SHIFT[nr]);
872 reg |= 1 << W83627EHF_PWM_MODE_SHIFT[nr];
873 w83627ehf_write_value(client, W83627EHF_REG_PWM_ENABLE[nr], reg);
874 mutex_unlock(&data->update_lock);
879 store_pwm(struct device *dev, struct device_attribute *attr,
880 const char *buf, size_t count)
882 struct i2c_client *client = to_i2c_client(dev);
883 struct w83627ehf_data *data = i2c_get_clientdata(client);
884 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
885 int nr = sensor_attr->index;
886 u32 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255);
888 mutex_lock(&data->update_lock);
890 w83627ehf_write_value(client, W83627EHF_REG_PWM[nr], val);
891 mutex_unlock(&data->update_lock);
896 store_pwm_enable(struct device *dev, struct device_attribute *attr,
897 const char *buf, size_t count)
899 struct i2c_client *client = to_i2c_client(dev);
900 struct w83627ehf_data *data = i2c_get_clientdata(client);
901 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
902 int nr = sensor_attr->index;
903 u32 val = simple_strtoul(buf, NULL, 10);
906 if (!val || (val > 2)) /* only modes 1 and 2 are supported */
908 mutex_lock(&data->update_lock);
909 reg = w83627ehf_read_value(client, W83627EHF_REG_PWM_ENABLE[nr]);
910 data->pwm_enable[nr] = val;
911 reg &= ~(0x03 << W83627EHF_PWM_ENABLE_SHIFT[nr]);
912 reg |= (val - 1) << W83627EHF_PWM_ENABLE_SHIFT[nr];
913 w83627ehf_write_value(client, W83627EHF_REG_PWM_ENABLE[nr], reg);
914 mutex_unlock(&data->update_lock);
919 #define show_tol_temp(reg) \
920 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
923 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
924 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
925 int nr = sensor_attr->index; \
926 return sprintf(buf, "%d\n", temp1_from_reg(data->reg[nr])); \
929 show_tol_temp(tolerance)
930 show_tol_temp(target_temp)
933 store_target_temp(struct device *dev, struct device_attribute *attr,
934 const char *buf, size_t count)
936 struct i2c_client *client = to_i2c_client(dev);
937 struct w83627ehf_data *data = i2c_get_clientdata(client);
938 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
939 int nr = sensor_attr->index;
940 u8 val = temp1_to_reg(simple_strtoul(buf, NULL, 10), 0, 127000);
942 mutex_lock(&data->update_lock);
943 data->target_temp[nr] = val;
944 w83627ehf_write_value(client, W83627EHF_REG_TARGET[nr], val);
945 mutex_unlock(&data->update_lock);
950 store_tolerance(struct device *dev, struct device_attribute *attr,
951 const char *buf, size_t count)
953 struct i2c_client *client = to_i2c_client(dev);
954 struct w83627ehf_data *data = i2c_get_clientdata(client);
955 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
956 int nr = sensor_attr->index;
958 /* Limit the temp to 0C - 15C */
959 u8 val = temp1_to_reg(simple_strtoul(buf, NULL, 10), 0, 15000);
961 mutex_lock(&data->update_lock);
962 reg = w83627ehf_read_value(client, W83627EHF_REG_TOLERANCE[nr]);
963 data->tolerance[nr] = val;
965 reg = (reg & 0x0f) | (val << 4);
967 reg = (reg & 0xf0) | val;
968 w83627ehf_write_value(client, W83627EHF_REG_TOLERANCE[nr], reg);
969 mutex_unlock(&data->update_lock);
973 static struct sensor_device_attribute sda_pwm[] = {
974 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0),
975 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
976 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2),
977 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3),
980 static struct sensor_device_attribute sda_pwm_mode[] = {
981 SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
983 SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
985 SENSOR_ATTR(pwm3_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
987 SENSOR_ATTR(pwm4_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
991 static struct sensor_device_attribute sda_pwm_enable[] = {
992 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
993 store_pwm_enable, 0),
994 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
995 store_pwm_enable, 1),
996 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
997 store_pwm_enable, 2),
998 SENSOR_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
999 store_pwm_enable, 3),
1002 static struct sensor_device_attribute sda_target_temp[] = {
1003 SENSOR_ATTR(pwm1_target, S_IWUSR | S_IRUGO, show_target_temp,
1004 store_target_temp, 0),
1005 SENSOR_ATTR(pwm2_target, S_IWUSR | S_IRUGO, show_target_temp,
1006 store_target_temp, 1),
1007 SENSOR_ATTR(pwm3_target, S_IWUSR | S_IRUGO, show_target_temp,
1008 store_target_temp, 2),
1009 SENSOR_ATTR(pwm4_target, S_IWUSR | S_IRUGO, show_target_temp,
1010 store_target_temp, 3),
1013 static struct sensor_device_attribute sda_tolerance[] = {
1014 SENSOR_ATTR(pwm1_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1015 store_tolerance, 0),
1016 SENSOR_ATTR(pwm2_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1017 store_tolerance, 1),
1018 SENSOR_ATTR(pwm3_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1019 store_tolerance, 2),
1020 SENSOR_ATTR(pwm4_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1021 store_tolerance, 3),
1024 /* Smart Fan registers */
1026 #define fan_functions(reg, REG) \
1027 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1030 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1031 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1032 int nr = sensor_attr->index; \
1033 return sprintf(buf, "%d\n", data->reg[nr]); \
1036 store_##reg(struct device *dev, struct device_attribute *attr, \
1037 const char *buf, size_t count) \
1039 struct i2c_client *client = to_i2c_client(dev); \
1040 struct w83627ehf_data *data = i2c_get_clientdata(client); \
1041 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1042 int nr = sensor_attr->index; \
1043 u32 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 1, 255); \
1044 mutex_lock(&data->update_lock); \
1045 data->reg[nr] = val; \
1046 w83627ehf_write_value(client, W83627EHF_REG_##REG[nr], val); \
1047 mutex_unlock(&data->update_lock); \
1051 fan_functions(fan_min_output, FAN_MIN_OUTPUT)
1053 #define fan_time_functions(reg, REG) \
1054 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1057 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1058 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1059 int nr = sensor_attr->index; \
1060 return sprintf(buf, "%d\n", \
1061 step_time_from_reg(data->reg[nr], data->pwm_mode[nr])); \
1065 store_##reg(struct device *dev, struct device_attribute *attr, \
1066 const char *buf, size_t count) \
1068 struct i2c_client *client = to_i2c_client(dev); \
1069 struct w83627ehf_data *data = i2c_get_clientdata(client); \
1070 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1071 int nr = sensor_attr->index; \
1072 u8 val = step_time_to_reg(simple_strtoul(buf, NULL, 10), \
1073 data->pwm_mode[nr]); \
1074 mutex_lock(&data->update_lock); \
1075 data->reg[nr] = val; \
1076 w83627ehf_write_value(client, W83627EHF_REG_##REG[nr], val); \
1077 mutex_unlock(&data->update_lock); \
1081 fan_time_functions(fan_stop_time, FAN_STOP_TIME)
1084 static struct sensor_device_attribute sda_sf3_arrays_fan4[] = {
1085 SENSOR_ATTR(pwm4_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1086 store_fan_stop_time, 3),
1087 SENSOR_ATTR(pwm4_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1088 store_fan_min_output, 3),
1091 static struct sensor_device_attribute sda_sf3_arrays[] = {
1092 SENSOR_ATTR(pwm1_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1093 store_fan_stop_time, 0),
1094 SENSOR_ATTR(pwm2_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1095 store_fan_stop_time, 1),
1096 SENSOR_ATTR(pwm3_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1097 store_fan_stop_time, 2),
1098 SENSOR_ATTR(pwm1_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1099 store_fan_min_output, 0),
1100 SENSOR_ATTR(pwm2_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1101 store_fan_min_output, 1),
1102 SENSOR_ATTR(pwm3_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1103 store_fan_min_output, 2),
1107 * Driver and client management
1110 static void w83627ehf_device_remove_files(struct device *dev)
1112 /* some entries in the following arrays may not have been used in
1113 * device_create_file(), but device_remove_file() will ignore them */
1116 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++)
1117 device_remove_file(dev, &sda_sf3_arrays[i].dev_attr);
1118 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++)
1119 device_remove_file(dev, &sda_sf3_arrays_fan4[i].dev_attr);
1120 for (i = 0; i < 10; i++) {
1121 device_remove_file(dev, &sda_in_input[i].dev_attr);
1122 device_remove_file(dev, &sda_in_alarm[i].dev_attr);
1123 device_remove_file(dev, &sda_in_min[i].dev_attr);
1124 device_remove_file(dev, &sda_in_max[i].dev_attr);
1126 for (i = 0; i < 5; i++) {
1127 device_remove_file(dev, &sda_fan_input[i].dev_attr);
1128 device_remove_file(dev, &sda_fan_alarm[i].dev_attr);
1129 device_remove_file(dev, &sda_fan_div[i].dev_attr);
1130 device_remove_file(dev, &sda_fan_min[i].dev_attr);
1132 for (i = 0; i < 4; i++) {
1133 device_remove_file(dev, &sda_pwm[i].dev_attr);
1134 device_remove_file(dev, &sda_pwm_mode[i].dev_attr);
1135 device_remove_file(dev, &sda_pwm_enable[i].dev_attr);
1136 device_remove_file(dev, &sda_target_temp[i].dev_attr);
1137 device_remove_file(dev, &sda_tolerance[i].dev_attr);
1139 for (i = 0; i < ARRAY_SIZE(sda_temp); i++)
1140 device_remove_file(dev, &sda_temp[i].dev_attr);
1143 static struct i2c_driver w83627ehf_driver;
1145 static void w83627ehf_init_client(struct i2c_client *client)
1150 /* Start monitoring is needed */
1151 tmp = w83627ehf_read_value(client, W83627EHF_REG_CONFIG);
1153 w83627ehf_write_value(client, W83627EHF_REG_CONFIG,
1156 /* Enable temp2 and temp3 if needed */
1157 for (i = 0; i < 2; i++) {
1158 tmp = w83627ehf_read_value(client,
1159 W83627EHF_REG_TEMP_CONFIG[i]);
1161 w83627ehf_write_value(client,
1162 W83627EHF_REG_TEMP_CONFIG[i],
1167 static int w83627ehf_detect(struct i2c_adapter *adapter)
1169 struct i2c_client *client;
1170 struct w83627ehf_data *data;
1172 u8 fan4pin, fan5pin;
1175 if (!request_region(address + REGION_OFFSET, REGION_LENGTH,
1176 w83627ehf_driver.driver.name)) {
1181 if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) {
1186 client = &data->client;
1187 i2c_set_clientdata(client, data);
1188 client->addr = address;
1189 mutex_init(&data->lock);
1190 client->adapter = adapter;
1191 client->driver = &w83627ehf_driver;
1195 strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE);
1197 mutex_init(&data->update_lock);
1199 /* Tell the i2c layer a new client has arrived */
1200 if ((err = i2c_attach_client(client)))
1203 /* Initialize the chip */
1204 w83627ehf_init_client(client);
1206 /* A few vars need to be filled upon startup */
1207 for (i = 0; i < 5; i++)
1208 data->fan_min[i] = w83627ehf_read_value(client,
1209 W83627EHF_REG_FAN_MIN[i]);
1211 /* fan4 and fan5 share some pins with the GPIO and serial flash */
1214 fan5pin = superio_inb(0x24) & 0x2;
1215 fan4pin = superio_inb(0x29) & 0x6;
1218 /* It looks like fan4 and fan5 pins can be alternatively used
1219 as fan on/off switches */
1221 data->has_fan = 0x07; /* fan1, fan2 and fan3 */
1222 i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1);
1223 if ((i & (1 << 2)) && (!fan4pin))
1224 data->has_fan |= (1 << 3);
1225 if ((i & (1 << 0)) && (!fan5pin))
1226 data->has_fan |= (1 << 4);
1228 /* Register sysfs hooks */
1229 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++)
1230 if ((err = device_create_file(dev,
1231 &sda_sf3_arrays[i].dev_attr)))
1234 /* if fan4 is enabled create the sf3 files for it */
1235 if (data->has_fan & (1 << 3))
1236 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++) {
1237 if ((err = device_create_file(dev,
1238 &sda_sf3_arrays_fan4[i].dev_attr)))
1242 for (i = 0; i < 10; i++)
1243 if ((err = device_create_file(dev, &sda_in_input[i].dev_attr))
1244 || (err = device_create_file(dev,
1245 &sda_in_alarm[i].dev_attr))
1246 || (err = device_create_file(dev,
1247 &sda_in_min[i].dev_attr))
1248 || (err = device_create_file(dev,
1249 &sda_in_max[i].dev_attr)))
1252 for (i = 0; i < 5; i++) {
1253 if (data->has_fan & (1 << i)) {
1254 if ((err = device_create_file(dev,
1255 &sda_fan_input[i].dev_attr))
1256 || (err = device_create_file(dev,
1257 &sda_fan_alarm[i].dev_attr))
1258 || (err = device_create_file(dev,
1259 &sda_fan_div[i].dev_attr))
1260 || (err = device_create_file(dev,
1261 &sda_fan_min[i].dev_attr)))
1263 if (i < 4 && /* w83627ehf only has 4 pwm */
1264 ((err = device_create_file(dev,
1265 &sda_pwm[i].dev_attr))
1266 || (err = device_create_file(dev,
1267 &sda_pwm_mode[i].dev_attr))
1268 || (err = device_create_file(dev,
1269 &sda_pwm_enable[i].dev_attr))
1270 || (err = device_create_file(dev,
1271 &sda_target_temp[i].dev_attr))
1272 || (err = device_create_file(dev,
1273 &sda_tolerance[i].dev_attr))))
1278 for (i = 0; i < ARRAY_SIZE(sda_temp); i++)
1279 if ((err = device_create_file(dev, &sda_temp[i].dev_attr)))
1282 data->class_dev = hwmon_device_register(dev);
1283 if (IS_ERR(data->class_dev)) {
1284 err = PTR_ERR(data->class_dev);
1291 w83627ehf_device_remove_files(dev);
1292 i2c_detach_client(client);
1296 release_region(address + REGION_OFFSET, REGION_LENGTH);
1301 static int w83627ehf_detach_client(struct i2c_client *client)
1303 struct w83627ehf_data *data = i2c_get_clientdata(client);
1306 hwmon_device_unregister(data->class_dev);
1307 w83627ehf_device_remove_files(&client->dev);
1309 if ((err = i2c_detach_client(client)))
1311 release_region(client->addr + REGION_OFFSET, REGION_LENGTH);
1317 static struct i2c_driver w83627ehf_driver = {
1319 .owner = THIS_MODULE,
1320 .name = "w83627ehf",
1322 .attach_adapter = w83627ehf_detect,
1323 .detach_client = w83627ehf_detach_client,
1326 static int __init w83627ehf_find(int sioaddr, unsigned short *addr)
1334 val = (superio_inb(SIO_REG_DEVID) << 8)
1335 | superio_inb(SIO_REG_DEVID + 1);
1336 if ((val & SIO_ID_MASK) != SIO_W83627EHF_ID) {
1341 superio_select(W83627EHF_LD_HWM);
1342 val = (superio_inb(SIO_REG_ADDR) << 8)
1343 | superio_inb(SIO_REG_ADDR + 1);
1344 *addr = val & REGION_ALIGNMENT;
1350 /* Activate logical device if needed */
1351 val = superio_inb(SIO_REG_ENABLE);
1353 superio_outb(SIO_REG_ENABLE, val | 0x01);
1359 static int __init sensors_w83627ehf_init(void)
1361 if (w83627ehf_find(0x2e, &address)
1362 && w83627ehf_find(0x4e, &address))
1365 return i2c_isa_add_driver(&w83627ehf_driver);
1368 static void __exit sensors_w83627ehf_exit(void)
1370 i2c_isa_del_driver(&w83627ehf_driver);
1373 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1374 MODULE_DESCRIPTION("W83627EHF driver");
1375 MODULE_LICENSE("GPL");
1377 module_init(sensors_w83627ehf_init);
1378 module_exit(sensors_w83627ehf_exit);