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@assembler.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 IDs man ID
36 w83627ehf 10 5 4 3 0x8850 0x88 0x5ca3
38 w83627dhg 9 5 4 3 0xa020 0xc1 0x5ca3
41 #include <linux/module.h>
42 #include <linux/init.h>
43 #include <linux/slab.h>
44 #include <linux/i2c.h>
45 #include <linux/i2c-isa.h>
46 #include <linux/hwmon.h>
47 #include <linux/hwmon-sysfs.h>
48 #include <linux/err.h>
49 #include <linux/mutex.h>
53 /* The actual ISA address is read from Super-I/O configuration space */
54 static unsigned short address;
57 * Super-I/O constants and functions
61 * The three following globals are initialized in w83627ehf_find(), before
62 * the i2c-isa device is created. Otherwise, they could be stored in
63 * w83627ehf_data. This is ugly, but necessary, and when the driver is next
64 * updated to become a platform driver, the globals will disappear.
66 static int REG; /* The register to read/write */
67 static int VAL; /* The value to read/write */
68 /* The w83627ehf/ehg have 10 voltage inputs, but the w83627dhg has 9. This
69 * value is also used in w83627ehf_detect() to export a device name in sysfs
70 * (e.g. w83627ehf or w83627dhg) */
71 static int w83627ehf_num_in;
73 #define W83627EHF_LD_HWM 0x0b
75 #define SIO_REG_LDSEL 0x07 /* Logical device select */
76 #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
77 #define SIO_REG_ENABLE 0x30 /* Logical device enable */
78 #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
80 #define SIO_W83627EHF_ID 0x8850
81 #define SIO_W83627EHG_ID 0x8860
82 #define SIO_W83627DHG_ID 0xa020
83 #define SIO_ID_MASK 0xFFF0
86 superio_outb(int reg, int val)
100 superio_select(int ld)
102 outb(SIO_REG_LDSEL, REG);
124 #define IOREGION_ALIGNMENT ~7
125 #define IOREGION_OFFSET 5
126 #define IOREGION_LENGTH 2
127 #define ADDR_REG_OFFSET 5
128 #define DATA_REG_OFFSET 6
130 #define W83627EHF_REG_BANK 0x4E
131 #define W83627EHF_REG_CONFIG 0x40
133 /* Not currently used:
134 * REG_MAN_ID has the value 0x5ca3 for all supported chips.
135 * REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model.
136 * REG_MAN_ID is at port 0x4f
137 * REG_CHIP_ID is at port 0x58 */
139 static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 };
140 static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c };
142 /* The W83627EHF registers for nr=7,8,9 are in bank 5 */
143 #define W83627EHF_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
144 (0x554 + (((nr) - 7) * 2)))
145 #define W83627EHF_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
146 (0x555 + (((nr) - 7) * 2)))
147 #define W83627EHF_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
150 #define W83627EHF_REG_TEMP1 0x27
151 #define W83627EHF_REG_TEMP1_HYST 0x3a
152 #define W83627EHF_REG_TEMP1_OVER 0x39
153 static const u16 W83627EHF_REG_TEMP[] = { 0x150, 0x250 };
154 static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x153, 0x253 };
155 static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x155, 0x255 };
156 static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 };
158 /* Fan clock dividers are spread over the following five registers */
159 #define W83627EHF_REG_FANDIV1 0x47
160 #define W83627EHF_REG_FANDIV2 0x4B
161 #define W83627EHF_REG_VBAT 0x5D
162 #define W83627EHF_REG_DIODE 0x59
163 #define W83627EHF_REG_SMI_OVT 0x4C
165 #define W83627EHF_REG_ALARM1 0x459
166 #define W83627EHF_REG_ALARM2 0x45A
167 #define W83627EHF_REG_ALARM3 0x45B
169 /* SmartFan registers */
170 /* DC or PWM output fan configuration */
171 static const u8 W83627EHF_REG_PWM_ENABLE[] = {
172 0x04, /* SYS FAN0 output mode and PWM mode */
173 0x04, /* CPU FAN0 output mode and PWM mode */
174 0x12, /* AUX FAN mode */
175 0x62, /* CPU fan1 mode */
178 static const u8 W83627EHF_PWM_MODE_SHIFT[] = { 0, 1, 0, 6 };
179 static const u8 W83627EHF_PWM_ENABLE_SHIFT[] = { 2, 4, 1, 4 };
181 /* FAN Duty Cycle, be used to control */
182 static const u8 W83627EHF_REG_PWM[] = { 0x01, 0x03, 0x11, 0x61 };
183 static const u8 W83627EHF_REG_TARGET[] = { 0x05, 0x06, 0x13, 0x63 };
184 static const u8 W83627EHF_REG_TOLERANCE[] = { 0x07, 0x07, 0x14, 0x62 };
187 /* Advanced Fan control, some values are common for all fans */
188 static const u8 W83627EHF_REG_FAN_MIN_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 };
189 static const u8 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0C, 0x0D, 0x17, 0x66 };
195 /* 1 is PWM mode, output in ms */
196 static inline unsigned int step_time_from_reg(u8 reg, u8 mode)
198 return mode ? 100 * reg : 400 * reg;
201 static inline u8 step_time_to_reg(unsigned int msec, u8 mode)
203 return SENSORS_LIMIT((mode ? (msec + 50) / 100 :
204 (msec + 200) / 400), 1, 255);
207 static inline unsigned int
208 fan_from_reg(u8 reg, unsigned int div)
210 if (reg == 0 || reg == 255)
212 return 1350000U / (reg * div);
215 static inline unsigned int
222 temp1_from_reg(s8 reg)
228 temp1_to_reg(int temp, int min, int max)
235 return (temp - 500) / 1000;
236 return (temp + 500) / 1000;
239 /* Some of analog inputs have internal scaling (2x), 8mV is ADC LSB */
241 static u8 scale_in[10] = { 8, 8, 16, 16, 8, 8, 8, 16, 16, 8 };
243 static inline long in_from_reg(u8 reg, u8 nr)
245 return reg * scale_in[nr];
248 static inline u8 in_to_reg(u32 val, u8 nr)
250 return SENSORS_LIMIT(((val + (scale_in[nr] / 2)) / scale_in[nr]), 0, 255);
254 * Data structures and manipulation thereof
257 struct w83627ehf_data {
258 struct i2c_client client;
259 struct class_device *class_dev;
262 struct mutex update_lock;
263 char valid; /* !=0 if following fields are valid */
264 unsigned long last_updated; /* In jiffies */
266 /* Register values */
267 u8 in[10]; /* Register value */
268 u8 in_max[10]; /* Register value */
269 u8 in_min[10]; /* Register value */
273 u8 has_fan; /* some fan inputs can be disabled */
279 s16 temp_max_hyst[2];
282 u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
283 u8 pwm_enable[4]; /* 1->manual
284 2->thermal cruise (also called SmartFan I) */
289 u8 fan_min_output[4]; /* minimum fan speed */
293 static inline int is_word_sized(u16 reg)
295 return (((reg & 0xff00) == 0x100
296 || (reg & 0xff00) == 0x200)
297 && ((reg & 0x00ff) == 0x50
298 || (reg & 0x00ff) == 0x53
299 || (reg & 0x00ff) == 0x55));
302 /* We assume that the default bank is 0, thus the following two functions do
303 nothing for registers which live in bank 0. For others, they respectively
304 set the bank register to the correct value (before the register is
305 accessed), and back to 0 (afterwards). */
306 static inline void w83627ehf_set_bank(struct i2c_client *client, u16 reg)
309 outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET);
310 outb_p(reg >> 8, client->addr + DATA_REG_OFFSET);
314 static inline void w83627ehf_reset_bank(struct i2c_client *client, u16 reg)
317 outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET);
318 outb_p(0, client->addr + DATA_REG_OFFSET);
322 static u16 w83627ehf_read_value(struct i2c_client *client, u16 reg)
324 struct w83627ehf_data *data = i2c_get_clientdata(client);
325 int res, word_sized = is_word_sized(reg);
327 mutex_lock(&data->lock);
329 w83627ehf_set_bank(client, reg);
330 outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET);
331 res = inb_p(client->addr + DATA_REG_OFFSET);
333 outb_p((reg & 0xff) + 1,
334 client->addr + ADDR_REG_OFFSET);
335 res = (res << 8) + inb_p(client->addr + DATA_REG_OFFSET);
337 w83627ehf_reset_bank(client, reg);
339 mutex_unlock(&data->lock);
344 static int w83627ehf_write_value(struct i2c_client *client, u16 reg, u16 value)
346 struct w83627ehf_data *data = i2c_get_clientdata(client);
347 int word_sized = is_word_sized(reg);
349 mutex_lock(&data->lock);
351 w83627ehf_set_bank(client, reg);
352 outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET);
354 outb_p(value >> 8, client->addr + DATA_REG_OFFSET);
355 outb_p((reg & 0xff) + 1,
356 client->addr + ADDR_REG_OFFSET);
358 outb_p(value & 0xff, client->addr + DATA_REG_OFFSET);
359 w83627ehf_reset_bank(client, reg);
361 mutex_unlock(&data->lock);
365 /* This function assumes that the caller holds data->update_lock */
366 static void w83627ehf_write_fan_div(struct i2c_client *client, int nr)
368 struct w83627ehf_data *data = i2c_get_clientdata(client);
373 reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0xcf)
374 | ((data->fan_div[0] & 0x03) << 4);
375 /* fan5 input control bit is write only, compute the value */
376 reg |= (data->has_fan & (1 << 4)) ? 1 : 0;
377 w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg);
378 reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xdf)
379 | ((data->fan_div[0] & 0x04) << 3);
380 w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg);
383 reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0x3f)
384 | ((data->fan_div[1] & 0x03) << 6);
385 /* fan5 input control bit is write only, compute the value */
386 reg |= (data->has_fan & (1 << 4)) ? 1 : 0;
387 w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg);
388 reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xbf)
389 | ((data->fan_div[1] & 0x04) << 4);
390 w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg);
393 reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV2) & 0x3f)
394 | ((data->fan_div[2] & 0x03) << 6);
395 w83627ehf_write_value(client, W83627EHF_REG_FANDIV2, reg);
396 reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0x7f)
397 | ((data->fan_div[2] & 0x04) << 5);
398 w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg);
401 reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0xfc)
402 | (data->fan_div[3] & 0x03);
403 w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg);
404 reg = (w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT) & 0x7f)
405 | ((data->fan_div[3] & 0x04) << 5);
406 w83627ehf_write_value(client, W83627EHF_REG_SMI_OVT, reg);
409 reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0x73)
410 | ((data->fan_div[4] & 0x03) << 2)
411 | ((data->fan_div[4] & 0x04) << 5);
412 w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg);
417 static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
419 struct i2c_client *client = to_i2c_client(dev);
420 struct w83627ehf_data *data = i2c_get_clientdata(client);
421 int pwmcfg = 0, tolerance = 0; /* shut up the compiler */
424 mutex_lock(&data->update_lock);
426 if (time_after(jiffies, data->last_updated + HZ)
428 /* Fan clock dividers */
429 i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1);
430 data->fan_div[0] = (i >> 4) & 0x03;
431 data->fan_div[1] = (i >> 6) & 0x03;
432 i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV2);
433 data->fan_div[2] = (i >> 6) & 0x03;
434 i = w83627ehf_read_value(client, W83627EHF_REG_VBAT);
435 data->fan_div[0] |= (i >> 3) & 0x04;
436 data->fan_div[1] |= (i >> 4) & 0x04;
437 data->fan_div[2] |= (i >> 5) & 0x04;
438 if (data->has_fan & ((1 << 3) | (1 << 4))) {
439 i = w83627ehf_read_value(client, W83627EHF_REG_DIODE);
440 data->fan_div[3] = i & 0x03;
441 data->fan_div[4] = ((i >> 2) & 0x03)
444 if (data->has_fan & (1 << 3)) {
445 i = w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT);
446 data->fan_div[3] |= (i >> 5) & 0x04;
449 /* Measured voltages and limits */
450 for (i = 0; i < w83627ehf_num_in; i++) {
451 data->in[i] = w83627ehf_read_value(client,
452 W83627EHF_REG_IN(i));
453 data->in_min[i] = w83627ehf_read_value(client,
454 W83627EHF_REG_IN_MIN(i));
455 data->in_max[i] = w83627ehf_read_value(client,
456 W83627EHF_REG_IN_MAX(i));
459 /* Measured fan speeds and limits */
460 for (i = 0; i < 5; i++) {
461 if (!(data->has_fan & (1 << i)))
464 data->fan[i] = w83627ehf_read_value(client,
465 W83627EHF_REG_FAN[i]);
466 data->fan_min[i] = w83627ehf_read_value(client,
467 W83627EHF_REG_FAN_MIN[i]);
469 /* If we failed to measure the fan speed and clock
470 divider can be increased, let's try that for next
472 if (data->fan[i] == 0xff
473 && data->fan_div[i] < 0x07) {
474 dev_dbg(&client->dev, "Increasing fan%d "
475 "clock divider from %u to %u\n",
476 i + 1, div_from_reg(data->fan_div[i]),
477 div_from_reg(data->fan_div[i] + 1));
479 w83627ehf_write_fan_div(client, i);
480 /* Preserve min limit if possible */
481 if (data->fan_min[i] >= 2
482 && data->fan_min[i] != 255)
483 w83627ehf_write_value(client,
484 W83627EHF_REG_FAN_MIN[i],
485 (data->fan_min[i] /= 2));
489 for (i = 0; i < 4; i++) {
490 /* pwmcfg, tolarance mapped for i=0, i=1 to same reg */
492 pwmcfg = w83627ehf_read_value(client,
493 W83627EHF_REG_PWM_ENABLE[i]);
494 tolerance = w83627ehf_read_value(client,
495 W83627EHF_REG_TOLERANCE[i]);
498 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1)
500 data->pwm_enable[i] =
501 ((pwmcfg >> W83627EHF_PWM_ENABLE_SHIFT[i])
503 data->pwm[i] = w83627ehf_read_value(client,
504 W83627EHF_REG_PWM[i]);
505 data->fan_min_output[i] = w83627ehf_read_value(client,
506 W83627EHF_REG_FAN_MIN_OUTPUT[i]);
507 data->fan_stop_time[i] = w83627ehf_read_value(client,
508 W83627EHF_REG_FAN_STOP_TIME[i]);
509 data->target_temp[i] =
510 w83627ehf_read_value(client,
511 W83627EHF_REG_TARGET[i]) &
512 (data->pwm_mode[i] == 1 ? 0x7f : 0xff);
513 data->tolerance[i] = (tolerance >> (i == 1 ? 4 : 0))
517 /* Measured temperatures and limits */
518 data->temp1 = w83627ehf_read_value(client,
519 W83627EHF_REG_TEMP1);
520 data->temp1_max = w83627ehf_read_value(client,
521 W83627EHF_REG_TEMP1_OVER);
522 data->temp1_max_hyst = w83627ehf_read_value(client,
523 W83627EHF_REG_TEMP1_HYST);
524 for (i = 0; i < 2; i++) {
525 data->temp[i] = w83627ehf_read_value(client,
526 W83627EHF_REG_TEMP[i]);
527 data->temp_max[i] = w83627ehf_read_value(client,
528 W83627EHF_REG_TEMP_OVER[i]);
529 data->temp_max_hyst[i] = w83627ehf_read_value(client,
530 W83627EHF_REG_TEMP_HYST[i]);
533 data->alarms = w83627ehf_read_value(client,
534 W83627EHF_REG_ALARM1) |
535 (w83627ehf_read_value(client,
536 W83627EHF_REG_ALARM2) << 8) |
537 (w83627ehf_read_value(client,
538 W83627EHF_REG_ALARM3) << 16);
540 data->last_updated = jiffies;
544 mutex_unlock(&data->update_lock);
549 * Sysfs callback functions
551 #define show_in_reg(reg) \
553 show_##reg(struct device *dev, struct device_attribute *attr, \
556 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
557 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
558 int nr = sensor_attr->index; \
559 return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr)); \
565 #define store_in_reg(REG, reg) \
567 store_in_##reg (struct device *dev, struct device_attribute *attr, \
568 const char *buf, size_t count) \
570 struct i2c_client *client = to_i2c_client(dev); \
571 struct w83627ehf_data *data = i2c_get_clientdata(client); \
572 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
573 int nr = sensor_attr->index; \
574 u32 val = simple_strtoul(buf, NULL, 10); \
576 mutex_lock(&data->update_lock); \
577 data->in_##reg[nr] = in_to_reg(val, nr); \
578 w83627ehf_write_value(client, W83627EHF_REG_IN_##REG(nr), \
579 data->in_##reg[nr]); \
580 mutex_unlock(&data->update_lock); \
584 store_in_reg(MIN, min)
585 store_in_reg(MAX, max)
587 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, char *buf)
589 struct w83627ehf_data *data = w83627ehf_update_device(dev);
590 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
591 int nr = sensor_attr->index;
592 return sprintf(buf, "%u\n", (data->alarms >> nr) & 0x01);
595 static struct sensor_device_attribute sda_in_input[] = {
596 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
597 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
598 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
599 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
600 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
601 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
602 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
603 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
604 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
605 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
608 static struct sensor_device_attribute sda_in_alarm[] = {
609 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
610 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
611 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
612 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
613 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
614 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 21),
615 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 20),
616 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16),
617 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17),
618 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 19),
621 static struct sensor_device_attribute sda_in_min[] = {
622 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
623 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
624 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
625 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
626 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
627 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
628 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
629 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
630 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
631 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
634 static struct sensor_device_attribute sda_in_max[] = {
635 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
636 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
637 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
638 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
639 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
640 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
641 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
642 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
643 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
644 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
647 #define show_fan_reg(reg) \
649 show_##reg(struct device *dev, struct device_attribute *attr, \
652 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
653 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
654 int nr = sensor_attr->index; \
655 return sprintf(buf, "%d\n", \
656 fan_from_reg(data->reg[nr], \
657 div_from_reg(data->fan_div[nr]))); \
660 show_fan_reg(fan_min);
663 show_fan_div(struct device *dev, struct device_attribute *attr,
666 struct w83627ehf_data *data = w83627ehf_update_device(dev);
667 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
668 int nr = sensor_attr->index;
669 return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr]));
673 store_fan_min(struct device *dev, struct device_attribute *attr,
674 const char *buf, size_t count)
676 struct i2c_client *client = to_i2c_client(dev);
677 struct w83627ehf_data *data = i2c_get_clientdata(client);
678 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
679 int nr = sensor_attr->index;
680 unsigned int val = simple_strtoul(buf, NULL, 10);
684 mutex_lock(&data->update_lock);
686 /* No min limit, alarm disabled */
687 data->fan_min[nr] = 255;
688 new_div = data->fan_div[nr]; /* No change */
689 dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1);
690 } else if ((reg = 1350000U / val) >= 128 * 255) {
691 /* Speed below this value cannot possibly be represented,
692 even with the highest divider (128) */
693 data->fan_min[nr] = 254;
694 new_div = 7; /* 128 == (1 << 7) */
695 dev_warn(dev, "fan%u low limit %u below minimum %u, set to "
696 "minimum\n", nr + 1, val, fan_from_reg(254, 128));
698 /* Speed above this value cannot possibly be represented,
699 even with the lowest divider (1) */
700 data->fan_min[nr] = 1;
701 new_div = 0; /* 1 == (1 << 0) */
702 dev_warn(dev, "fan%u low limit %u above maximum %u, set to "
703 "maximum\n", nr + 1, val, fan_from_reg(1, 1));
705 /* Automatically pick the best divider, i.e. the one such
706 that the min limit will correspond to a register value
707 in the 96..192 range */
709 while (reg > 192 && new_div < 7) {
713 data->fan_min[nr] = reg;
716 /* Write both the fan clock divider (if it changed) and the new
717 fan min (unconditionally) */
718 if (new_div != data->fan_div[nr]) {
719 /* Preserve the fan speed reading */
720 if (data->fan[nr] != 0xff) {
721 if (new_div > data->fan_div[nr])
722 data->fan[nr] >>= new_div - data->fan_div[nr];
723 else if (data->fan[nr] & 0x80)
724 data->fan[nr] = 0xff;
726 data->fan[nr] <<= data->fan_div[nr] - new_div;
729 dev_dbg(dev, "fan%u clock divider changed from %u to %u\n",
730 nr + 1, div_from_reg(data->fan_div[nr]),
731 div_from_reg(new_div));
732 data->fan_div[nr] = new_div;
733 w83627ehf_write_fan_div(client, nr);
735 w83627ehf_write_value(client, W83627EHF_REG_FAN_MIN[nr],
737 mutex_unlock(&data->update_lock);
742 static struct sensor_device_attribute sda_fan_input[] = {
743 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
744 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
745 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
746 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
747 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
750 static struct sensor_device_attribute sda_fan_alarm[] = {
751 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
752 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
753 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
754 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 10),
755 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 23),
758 static struct sensor_device_attribute sda_fan_min[] = {
759 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
761 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
763 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
765 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
767 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
771 static struct sensor_device_attribute sda_fan_div[] = {
772 SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
773 SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
774 SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
775 SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3),
776 SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4),
779 #define show_temp1_reg(reg) \
781 show_##reg(struct device *dev, struct device_attribute *attr, \
784 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
785 return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \
787 show_temp1_reg(temp1);
788 show_temp1_reg(temp1_max);
789 show_temp1_reg(temp1_max_hyst);
791 #define store_temp1_reg(REG, reg) \
793 store_temp1_##reg(struct device *dev, struct device_attribute *attr, \
794 const char *buf, size_t count) \
796 struct i2c_client *client = to_i2c_client(dev); \
797 struct w83627ehf_data *data = i2c_get_clientdata(client); \
798 u32 val = simple_strtoul(buf, NULL, 10); \
800 mutex_lock(&data->update_lock); \
801 data->temp1_##reg = temp1_to_reg(val, -128000, 127000); \
802 w83627ehf_write_value(client, W83627EHF_REG_TEMP1_##REG, \
803 data->temp1_##reg); \
804 mutex_unlock(&data->update_lock); \
807 store_temp1_reg(OVER, max);
808 store_temp1_reg(HYST, max_hyst);
810 #define show_temp_reg(reg) \
812 show_##reg(struct device *dev, struct device_attribute *attr, \
815 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
816 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
817 int nr = sensor_attr->index; \
818 return sprintf(buf, "%d\n", \
819 LM75_TEMP_FROM_REG(data->reg[nr])); \
822 show_temp_reg(temp_max);
823 show_temp_reg(temp_max_hyst);
825 #define store_temp_reg(REG, reg) \
827 store_##reg(struct device *dev, struct device_attribute *attr, \
828 const char *buf, size_t count) \
830 struct i2c_client *client = to_i2c_client(dev); \
831 struct w83627ehf_data *data = i2c_get_clientdata(client); \
832 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
833 int nr = sensor_attr->index; \
834 u32 val = simple_strtoul(buf, NULL, 10); \
836 mutex_lock(&data->update_lock); \
837 data->reg[nr] = LM75_TEMP_TO_REG(val); \
838 w83627ehf_write_value(client, W83627EHF_REG_TEMP_##REG[nr], \
840 mutex_unlock(&data->update_lock); \
843 store_temp_reg(OVER, temp_max);
844 store_temp_reg(HYST, temp_max_hyst);
846 static struct sensor_device_attribute sda_temp[] = {
847 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0),
848 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 0),
849 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 1),
850 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1_max,
852 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max,
854 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max,
856 SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1_max_hyst,
857 store_temp1_max_hyst, 0),
858 SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
859 store_temp_max_hyst, 0),
860 SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
861 store_temp_max_hyst, 1),
862 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
863 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
864 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
867 #define show_pwm_reg(reg) \
868 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
871 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
872 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
873 int nr = sensor_attr->index; \
874 return sprintf(buf, "%d\n", data->reg[nr]); \
877 show_pwm_reg(pwm_mode)
878 show_pwm_reg(pwm_enable)
882 store_pwm_mode(struct device *dev, struct device_attribute *attr,
883 const char *buf, size_t count)
885 struct i2c_client *client = to_i2c_client(dev);
886 struct w83627ehf_data *data = i2c_get_clientdata(client);
887 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
888 int nr = sensor_attr->index;
889 u32 val = simple_strtoul(buf, NULL, 10);
894 mutex_lock(&data->update_lock);
895 reg = w83627ehf_read_value(client, W83627EHF_REG_PWM_ENABLE[nr]);
896 data->pwm_mode[nr] = val;
897 reg &= ~(1 << W83627EHF_PWM_MODE_SHIFT[nr]);
899 reg |= 1 << W83627EHF_PWM_MODE_SHIFT[nr];
900 w83627ehf_write_value(client, W83627EHF_REG_PWM_ENABLE[nr], reg);
901 mutex_unlock(&data->update_lock);
906 store_pwm(struct device *dev, struct device_attribute *attr,
907 const char *buf, size_t count)
909 struct i2c_client *client = to_i2c_client(dev);
910 struct w83627ehf_data *data = i2c_get_clientdata(client);
911 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
912 int nr = sensor_attr->index;
913 u32 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255);
915 mutex_lock(&data->update_lock);
917 w83627ehf_write_value(client, W83627EHF_REG_PWM[nr], val);
918 mutex_unlock(&data->update_lock);
923 store_pwm_enable(struct device *dev, struct device_attribute *attr,
924 const char *buf, size_t count)
926 struct i2c_client *client = to_i2c_client(dev);
927 struct w83627ehf_data *data = i2c_get_clientdata(client);
928 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
929 int nr = sensor_attr->index;
930 u32 val = simple_strtoul(buf, NULL, 10);
933 if (!val || (val > 2)) /* only modes 1 and 2 are supported */
935 mutex_lock(&data->update_lock);
936 reg = w83627ehf_read_value(client, W83627EHF_REG_PWM_ENABLE[nr]);
937 data->pwm_enable[nr] = val;
938 reg &= ~(0x03 << W83627EHF_PWM_ENABLE_SHIFT[nr]);
939 reg |= (val - 1) << W83627EHF_PWM_ENABLE_SHIFT[nr];
940 w83627ehf_write_value(client, W83627EHF_REG_PWM_ENABLE[nr], reg);
941 mutex_unlock(&data->update_lock);
946 #define show_tol_temp(reg) \
947 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
950 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
951 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
952 int nr = sensor_attr->index; \
953 return sprintf(buf, "%d\n", temp1_from_reg(data->reg[nr])); \
956 show_tol_temp(tolerance)
957 show_tol_temp(target_temp)
960 store_target_temp(struct device *dev, struct device_attribute *attr,
961 const char *buf, size_t count)
963 struct i2c_client *client = to_i2c_client(dev);
964 struct w83627ehf_data *data = i2c_get_clientdata(client);
965 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
966 int nr = sensor_attr->index;
967 u8 val = temp1_to_reg(simple_strtoul(buf, NULL, 10), 0, 127000);
969 mutex_lock(&data->update_lock);
970 data->target_temp[nr] = val;
971 w83627ehf_write_value(client, W83627EHF_REG_TARGET[nr], val);
972 mutex_unlock(&data->update_lock);
977 store_tolerance(struct device *dev, struct device_attribute *attr,
978 const char *buf, size_t count)
980 struct i2c_client *client = to_i2c_client(dev);
981 struct w83627ehf_data *data = i2c_get_clientdata(client);
982 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
983 int nr = sensor_attr->index;
985 /* Limit the temp to 0C - 15C */
986 u8 val = temp1_to_reg(simple_strtoul(buf, NULL, 10), 0, 15000);
988 mutex_lock(&data->update_lock);
989 reg = w83627ehf_read_value(client, W83627EHF_REG_TOLERANCE[nr]);
990 data->tolerance[nr] = val;
992 reg = (reg & 0x0f) | (val << 4);
994 reg = (reg & 0xf0) | val;
995 w83627ehf_write_value(client, W83627EHF_REG_TOLERANCE[nr], reg);
996 mutex_unlock(&data->update_lock);
1000 static struct sensor_device_attribute sda_pwm[] = {
1001 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0),
1002 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
1003 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2),
1004 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3),
1007 static struct sensor_device_attribute sda_pwm_mode[] = {
1008 SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1010 SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1012 SENSOR_ATTR(pwm3_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1014 SENSOR_ATTR(pwm4_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1018 static struct sensor_device_attribute sda_pwm_enable[] = {
1019 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1020 store_pwm_enable, 0),
1021 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1022 store_pwm_enable, 1),
1023 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1024 store_pwm_enable, 2),
1025 SENSOR_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1026 store_pwm_enable, 3),
1029 static struct sensor_device_attribute sda_target_temp[] = {
1030 SENSOR_ATTR(pwm1_target, S_IWUSR | S_IRUGO, show_target_temp,
1031 store_target_temp, 0),
1032 SENSOR_ATTR(pwm2_target, S_IWUSR | S_IRUGO, show_target_temp,
1033 store_target_temp, 1),
1034 SENSOR_ATTR(pwm3_target, S_IWUSR | S_IRUGO, show_target_temp,
1035 store_target_temp, 2),
1036 SENSOR_ATTR(pwm4_target, S_IWUSR | S_IRUGO, show_target_temp,
1037 store_target_temp, 3),
1040 static struct sensor_device_attribute sda_tolerance[] = {
1041 SENSOR_ATTR(pwm1_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1042 store_tolerance, 0),
1043 SENSOR_ATTR(pwm2_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1044 store_tolerance, 1),
1045 SENSOR_ATTR(pwm3_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1046 store_tolerance, 2),
1047 SENSOR_ATTR(pwm4_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1048 store_tolerance, 3),
1051 /* Smart Fan registers */
1053 #define fan_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", data->reg[nr]); \
1063 store_##reg(struct device *dev, struct device_attribute *attr, \
1064 const char *buf, size_t count) \
1066 struct i2c_client *client = to_i2c_client(dev); \
1067 struct w83627ehf_data *data = i2c_get_clientdata(client); \
1068 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1069 int nr = sensor_attr->index; \
1070 u32 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 1, 255); \
1071 mutex_lock(&data->update_lock); \
1072 data->reg[nr] = val; \
1073 w83627ehf_write_value(client, W83627EHF_REG_##REG[nr], val); \
1074 mutex_unlock(&data->update_lock); \
1078 fan_functions(fan_min_output, FAN_MIN_OUTPUT)
1080 #define fan_time_functions(reg, REG) \
1081 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1084 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1085 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1086 int nr = sensor_attr->index; \
1087 return sprintf(buf, "%d\n", \
1088 step_time_from_reg(data->reg[nr], data->pwm_mode[nr])); \
1092 store_##reg(struct device *dev, struct device_attribute *attr, \
1093 const char *buf, size_t count) \
1095 struct i2c_client *client = to_i2c_client(dev); \
1096 struct w83627ehf_data *data = i2c_get_clientdata(client); \
1097 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1098 int nr = sensor_attr->index; \
1099 u8 val = step_time_to_reg(simple_strtoul(buf, NULL, 10), \
1100 data->pwm_mode[nr]); \
1101 mutex_lock(&data->update_lock); \
1102 data->reg[nr] = val; \
1103 w83627ehf_write_value(client, W83627EHF_REG_##REG[nr], val); \
1104 mutex_unlock(&data->update_lock); \
1108 fan_time_functions(fan_stop_time, FAN_STOP_TIME)
1111 static struct sensor_device_attribute sda_sf3_arrays_fan4[] = {
1112 SENSOR_ATTR(pwm4_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1113 store_fan_stop_time, 3),
1114 SENSOR_ATTR(pwm4_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1115 store_fan_min_output, 3),
1118 static struct sensor_device_attribute sda_sf3_arrays[] = {
1119 SENSOR_ATTR(pwm1_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1120 store_fan_stop_time, 0),
1121 SENSOR_ATTR(pwm2_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1122 store_fan_stop_time, 1),
1123 SENSOR_ATTR(pwm3_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1124 store_fan_stop_time, 2),
1125 SENSOR_ATTR(pwm1_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1126 store_fan_min_output, 0),
1127 SENSOR_ATTR(pwm2_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1128 store_fan_min_output, 1),
1129 SENSOR_ATTR(pwm3_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1130 store_fan_min_output, 2),
1134 * Driver and client management
1137 static void w83627ehf_device_remove_files(struct device *dev)
1139 /* some entries in the following arrays may not have been used in
1140 * device_create_file(), but device_remove_file() will ignore them */
1143 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++)
1144 device_remove_file(dev, &sda_sf3_arrays[i].dev_attr);
1145 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++)
1146 device_remove_file(dev, &sda_sf3_arrays_fan4[i].dev_attr);
1147 for (i = 0; i < w83627ehf_num_in; i++) {
1148 device_remove_file(dev, &sda_in_input[i].dev_attr);
1149 device_remove_file(dev, &sda_in_alarm[i].dev_attr);
1150 device_remove_file(dev, &sda_in_min[i].dev_attr);
1151 device_remove_file(dev, &sda_in_max[i].dev_attr);
1153 for (i = 0; i < 5; i++) {
1154 device_remove_file(dev, &sda_fan_input[i].dev_attr);
1155 device_remove_file(dev, &sda_fan_alarm[i].dev_attr);
1156 device_remove_file(dev, &sda_fan_div[i].dev_attr);
1157 device_remove_file(dev, &sda_fan_min[i].dev_attr);
1159 for (i = 0; i < 4; i++) {
1160 device_remove_file(dev, &sda_pwm[i].dev_attr);
1161 device_remove_file(dev, &sda_pwm_mode[i].dev_attr);
1162 device_remove_file(dev, &sda_pwm_enable[i].dev_attr);
1163 device_remove_file(dev, &sda_target_temp[i].dev_attr);
1164 device_remove_file(dev, &sda_tolerance[i].dev_attr);
1166 for (i = 0; i < ARRAY_SIZE(sda_temp); i++)
1167 device_remove_file(dev, &sda_temp[i].dev_attr);
1170 static struct i2c_driver w83627ehf_driver;
1172 static void w83627ehf_init_client(struct i2c_client *client)
1177 /* Start monitoring is needed */
1178 tmp = w83627ehf_read_value(client, W83627EHF_REG_CONFIG);
1180 w83627ehf_write_value(client, W83627EHF_REG_CONFIG,
1183 /* Enable temp2 and temp3 if needed */
1184 for (i = 0; i < 2; i++) {
1185 tmp = w83627ehf_read_value(client,
1186 W83627EHF_REG_TEMP_CONFIG[i]);
1188 w83627ehf_write_value(client,
1189 W83627EHF_REG_TEMP_CONFIG[i],
1194 static int w83627ehf_detect(struct i2c_adapter *adapter)
1196 struct i2c_client *client;
1197 struct w83627ehf_data *data;
1199 u8 fan4pin, fan5pin;
1202 if (!request_region(address + IOREGION_OFFSET, IOREGION_LENGTH,
1203 w83627ehf_driver.driver.name)) {
1208 if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) {
1213 client = &data->client;
1214 i2c_set_clientdata(client, data);
1215 client->addr = address;
1216 mutex_init(&data->lock);
1217 client->adapter = adapter;
1218 client->driver = &w83627ehf_driver;
1222 if (w83627ehf_num_in == 9)
1223 strlcpy(client->name, "w83627dhg", I2C_NAME_SIZE);
1224 else /* just say ehf. 627EHG is 627EHF in lead-free packaging. */
1225 strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE);
1228 mutex_init(&data->update_lock);
1230 /* Tell the i2c layer a new client has arrived */
1231 if ((err = i2c_attach_client(client)))
1234 /* Initialize the chip */
1235 w83627ehf_init_client(client);
1237 /* A few vars need to be filled upon startup */
1238 for (i = 0; i < 5; i++)
1239 data->fan_min[i] = w83627ehf_read_value(client,
1240 W83627EHF_REG_FAN_MIN[i]);
1242 /* fan4 and fan5 share some pins with the GPIO and serial flash */
1245 fan5pin = superio_inb(0x24) & 0x2;
1246 fan4pin = superio_inb(0x29) & 0x6;
1249 /* It looks like fan4 and fan5 pins can be alternatively used
1250 as fan on/off switches, but fan5 control is write only :/
1251 We assume that if the serial interface is disabled, designers
1252 connected fan5 as input unless they are emitting log 1, which
1253 is not the default. */
1255 data->has_fan = 0x07; /* fan1, fan2 and fan3 */
1256 i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1);
1257 if ((i & (1 << 2)) && (!fan4pin))
1258 data->has_fan |= (1 << 3);
1259 if (!(i & (1 << 1)) && (!fan5pin))
1260 data->has_fan |= (1 << 4);
1262 /* Register sysfs hooks */
1263 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++)
1264 if ((err = device_create_file(dev,
1265 &sda_sf3_arrays[i].dev_attr)))
1268 /* if fan4 is enabled create the sf3 files for it */
1269 if (data->has_fan & (1 << 3))
1270 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++) {
1271 if ((err = device_create_file(dev,
1272 &sda_sf3_arrays_fan4[i].dev_attr)))
1276 for (i = 0; i < w83627ehf_num_in; i++)
1277 if ((err = device_create_file(dev, &sda_in_input[i].dev_attr))
1278 || (err = device_create_file(dev,
1279 &sda_in_alarm[i].dev_attr))
1280 || (err = device_create_file(dev,
1281 &sda_in_min[i].dev_attr))
1282 || (err = device_create_file(dev,
1283 &sda_in_max[i].dev_attr)))
1286 for (i = 0; i < 5; i++) {
1287 if (data->has_fan & (1 << i)) {
1288 if ((err = device_create_file(dev,
1289 &sda_fan_input[i].dev_attr))
1290 || (err = device_create_file(dev,
1291 &sda_fan_alarm[i].dev_attr))
1292 || (err = device_create_file(dev,
1293 &sda_fan_div[i].dev_attr))
1294 || (err = device_create_file(dev,
1295 &sda_fan_min[i].dev_attr)))
1297 if (i < 4 && /* w83627ehf only has 4 pwm */
1298 ((err = device_create_file(dev,
1299 &sda_pwm[i].dev_attr))
1300 || (err = device_create_file(dev,
1301 &sda_pwm_mode[i].dev_attr))
1302 || (err = device_create_file(dev,
1303 &sda_pwm_enable[i].dev_attr))
1304 || (err = device_create_file(dev,
1305 &sda_target_temp[i].dev_attr))
1306 || (err = device_create_file(dev,
1307 &sda_tolerance[i].dev_attr))))
1312 for (i = 0; i < ARRAY_SIZE(sda_temp); i++)
1313 if ((err = device_create_file(dev, &sda_temp[i].dev_attr)))
1316 data->class_dev = hwmon_device_register(dev);
1317 if (IS_ERR(data->class_dev)) {
1318 err = PTR_ERR(data->class_dev);
1325 w83627ehf_device_remove_files(dev);
1326 i2c_detach_client(client);
1330 release_region(address + IOREGION_OFFSET, IOREGION_LENGTH);
1335 static int w83627ehf_detach_client(struct i2c_client *client)
1337 struct w83627ehf_data *data = i2c_get_clientdata(client);
1340 hwmon_device_unregister(data->class_dev);
1341 w83627ehf_device_remove_files(&client->dev);
1343 if ((err = i2c_detach_client(client)))
1345 release_region(client->addr + IOREGION_OFFSET, IOREGION_LENGTH);
1351 static struct i2c_driver w83627ehf_driver = {
1353 .owner = THIS_MODULE,
1354 .name = "w83627ehf",
1356 .attach_adapter = w83627ehf_detect,
1357 .detach_client = w83627ehf_detach_client,
1360 static int __init w83627ehf_find(int sioaddr, unsigned short *addr)
1368 val = (superio_inb(SIO_REG_DEVID) << 8)
1369 | superio_inb(SIO_REG_DEVID + 1);
1370 switch (val & SIO_ID_MASK) {
1371 case SIO_W83627DHG_ID:
1372 w83627ehf_num_in = 9;
1374 case SIO_W83627EHF_ID:
1375 case SIO_W83627EHG_ID:
1376 w83627ehf_num_in = 10;
1379 printk(KERN_WARNING "w83627ehf: unsupported chip ID: 0x%04x\n",
1385 superio_select(W83627EHF_LD_HWM);
1386 val = (superio_inb(SIO_REG_ADDR) << 8)
1387 | superio_inb(SIO_REG_ADDR + 1);
1388 *addr = val & IOREGION_ALIGNMENT;
1394 /* Activate logical device if needed */
1395 val = superio_inb(SIO_REG_ENABLE);
1397 superio_outb(SIO_REG_ENABLE, val | 0x01);
1403 static int __init sensors_w83627ehf_init(void)
1405 if (w83627ehf_find(0x2e, &address)
1406 && w83627ehf_find(0x4e, &address))
1409 return i2c_isa_add_driver(&w83627ehf_driver);
1412 static void __exit sensors_w83627ehf_exit(void)
1414 i2c_isa_del_driver(&w83627ehf_driver);
1417 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1418 MODULE_DESCRIPTION("W83627EHF driver");
1419 MODULE_LICENSE("GPL");
1421 module_init(sensors_w83627ehf_init);
1422 module_exit(sensors_w83627ehf_exit);