perf bench futex: Cache align the worker struct
[linux/fpc-iii.git] / drivers / hwmon / w83793.c
blob816aa6caf5d553ef2538eb9ebdcddab40f96c588
1 /*
2 * w83793.c - Linux kernel driver for hardware monitoring
3 * Copyright (C) 2006 Winbond Electronics Corp.
4 * Yuan Mu
5 * Rudolf Marek <r.marek@assembler.cz>
6 * Copyright (C) 2009-2010 Sven Anders <anders@anduras.de>, ANDURAS AG.
7 * Watchdog driver part
8 * (Based partially on fschmd driver,
9 * Copyright 2007-2008 by Hans de Goede)
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation - version 2.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 * 02110-1301 USA.
27 * Supports following chips:
29 * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
30 * w83793 10 12 8 6 0x7b 0x5ca3 yes no
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/i2c.h>
37 #include <linux/hwmon.h>
38 #include <linux/hwmon-vid.h>
39 #include <linux/hwmon-sysfs.h>
40 #include <linux/err.h>
41 #include <linux/mutex.h>
42 #include <linux/fs.h>
43 #include <linux/watchdog.h>
44 #include <linux/miscdevice.h>
45 #include <linux/uaccess.h>
46 #include <linux/kref.h>
47 #include <linux/notifier.h>
48 #include <linux/reboot.h>
49 #include <linux/jiffies.h>
51 /* Default values */
52 #define WATCHDOG_TIMEOUT 2 /* 2 minute default timeout */
54 /* Addresses to scan */
55 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
56 I2C_CLIENT_END };
58 /* Insmod parameters */
60 static unsigned short force_subclients[4];
61 module_param_array(force_subclients, short, NULL, 0);
62 MODULE_PARM_DESC(force_subclients,
63 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
65 static bool reset;
66 module_param(reset, bool, 0);
67 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
69 static int timeout = WATCHDOG_TIMEOUT; /* default timeout in minutes */
70 module_param(timeout, int, 0);
71 MODULE_PARM_DESC(timeout,
72 "Watchdog timeout in minutes. 2<= timeout <=255 (default="
73 __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
75 static bool nowayout = WATCHDOG_NOWAYOUT;
76 module_param(nowayout, bool, 0);
77 MODULE_PARM_DESC(nowayout,
78 "Watchdog cannot be stopped once started (default="
79 __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
82 * Address 0x00, 0x0d, 0x0e, 0x0f in all three banks are reserved
83 * as ID, Bank Select registers
85 #define W83793_REG_BANKSEL 0x00
86 #define W83793_REG_VENDORID 0x0d
87 #define W83793_REG_CHIPID 0x0e
88 #define W83793_REG_DEVICEID 0x0f
90 #define W83793_REG_CONFIG 0x40
91 #define W83793_REG_MFC 0x58
92 #define W83793_REG_FANIN_CTRL 0x5c
93 #define W83793_REG_FANIN_SEL 0x5d
94 #define W83793_REG_I2C_ADDR 0x0b
95 #define W83793_REG_I2C_SUBADDR 0x0c
96 #define W83793_REG_VID_INA 0x05
97 #define W83793_REG_VID_INB 0x06
98 #define W83793_REG_VID_LATCHA 0x07
99 #define W83793_REG_VID_LATCHB 0x08
100 #define W83793_REG_VID_CTRL 0x59
102 #define W83793_REG_WDT_LOCK 0x01
103 #define W83793_REG_WDT_ENABLE 0x02
104 #define W83793_REG_WDT_STATUS 0x03
105 #define W83793_REG_WDT_TIMEOUT 0x04
107 static u16 W83793_REG_TEMP_MODE[2] = { 0x5e, 0x5f };
109 #define TEMP_READ 0
110 #define TEMP_CRIT 1
111 #define TEMP_CRIT_HYST 2
112 #define TEMP_WARN 3
113 #define TEMP_WARN_HYST 4
115 * only crit and crit_hyst affect real-time alarm status
116 * current crit crit_hyst warn warn_hyst
118 static u16 W83793_REG_TEMP[][5] = {
119 {0x1c, 0x78, 0x79, 0x7a, 0x7b},
120 {0x1d, 0x7c, 0x7d, 0x7e, 0x7f},
121 {0x1e, 0x80, 0x81, 0x82, 0x83},
122 {0x1f, 0x84, 0x85, 0x86, 0x87},
123 {0x20, 0x88, 0x89, 0x8a, 0x8b},
124 {0x21, 0x8c, 0x8d, 0x8e, 0x8f},
127 #define W83793_REG_TEMP_LOW_BITS 0x22
129 #define W83793_REG_BEEP(index) (0x53 + (index))
130 #define W83793_REG_ALARM(index) (0x4b + (index))
132 #define W83793_REG_CLR_CHASSIS 0x4a /* SMI MASK4 */
133 #define W83793_REG_IRQ_CTRL 0x50
134 #define W83793_REG_OVT_CTRL 0x51
135 #define W83793_REG_OVT_BEEP 0x52
137 #define IN_READ 0
138 #define IN_MAX 1
139 #define IN_LOW 2
140 static const u16 W83793_REG_IN[][3] = {
141 /* Current, High, Low */
142 {0x10, 0x60, 0x61}, /* Vcore A */
143 {0x11, 0x62, 0x63}, /* Vcore B */
144 {0x12, 0x64, 0x65}, /* Vtt */
145 {0x14, 0x6a, 0x6b}, /* VSEN1 */
146 {0x15, 0x6c, 0x6d}, /* VSEN2 */
147 {0x16, 0x6e, 0x6f}, /* +3VSEN */
148 {0x17, 0x70, 0x71}, /* +12VSEN */
149 {0x18, 0x72, 0x73}, /* 5VDD */
150 {0x19, 0x74, 0x75}, /* 5VSB */
151 {0x1a, 0x76, 0x77}, /* VBAT */
154 /* Low Bits of Vcore A/B Vtt Read/High/Low */
155 static const u16 W83793_REG_IN_LOW_BITS[] = { 0x1b, 0x68, 0x69 };
156 static u8 scale_in[] = { 2, 2, 2, 16, 16, 16, 8, 24, 24, 16 };
157 static u8 scale_in_add[] = { 0, 0, 0, 0, 0, 0, 0, 150, 150, 0 };
159 #define W83793_REG_FAN(index) (0x23 + 2 * (index)) /* High byte */
160 #define W83793_REG_FAN_MIN(index) (0x90 + 2 * (index)) /* High byte */
162 #define W83793_REG_PWM_DEFAULT 0xb2
163 #define W83793_REG_PWM_ENABLE 0x207
164 #define W83793_REG_PWM_UPTIME 0xc3 /* Unit in 0.1 second */
165 #define W83793_REG_PWM_DOWNTIME 0xc4 /* Unit in 0.1 second */
166 #define W83793_REG_TEMP_CRITICAL 0xc5
168 #define PWM_DUTY 0
169 #define PWM_START 1
170 #define PWM_NONSTOP 2
171 #define PWM_STOP_TIME 3
172 #define W83793_REG_PWM(index, nr) (((nr) == 0 ? 0xb3 : \
173 (nr) == 1 ? 0x220 : 0x218) + (index))
175 /* bit field, fan1 is bit0, fan2 is bit1 ... */
176 #define W83793_REG_TEMP_FAN_MAP(index) (0x201 + (index))
177 #define W83793_REG_TEMP_TOL(index) (0x208 + (index))
178 #define W83793_REG_TEMP_CRUISE(index) (0x210 + (index))
179 #define W83793_REG_PWM_STOP_TIME(index) (0x228 + (index))
180 #define W83793_REG_SF2_TEMP(index, nr) (0x230 + ((index) << 4) + (nr))
181 #define W83793_REG_SF2_PWM(index, nr) (0x238 + ((index) << 4) + (nr))
183 static inline unsigned long FAN_FROM_REG(u16 val)
185 if ((val >= 0xfff) || (val == 0))
186 return 0;
187 return 1350000UL / val;
190 static inline u16 FAN_TO_REG(long rpm)
192 if (rpm <= 0)
193 return 0x0fff;
194 return clamp_val((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
197 static inline unsigned long TIME_FROM_REG(u8 reg)
199 return reg * 100;
202 static inline u8 TIME_TO_REG(unsigned long val)
204 return clamp_val((val + 50) / 100, 0, 0xff);
207 static inline long TEMP_FROM_REG(s8 reg)
209 return reg * 1000;
212 static inline s8 TEMP_TO_REG(long val, s8 min, s8 max)
214 return clamp_val((val + (val < 0 ? -500 : 500)) / 1000, min, max);
217 struct w83793_data {
218 struct i2c_client *lm75[2];
219 struct device *hwmon_dev;
220 struct mutex update_lock;
221 char valid; /* !=0 if following fields are valid */
222 unsigned long last_updated; /* In jiffies */
223 unsigned long last_nonvolatile; /* In jiffies, last time we update the
224 * nonvolatile registers
227 u8 bank;
228 u8 vrm;
229 u8 vid[2];
230 u8 in[10][3]; /* Register value, read/high/low */
231 u8 in_low_bits[3]; /* Additional resolution for VCore A/B Vtt */
233 u16 has_fan; /* Only fan1- fan5 has own pins */
234 u16 fan[12]; /* Register value combine */
235 u16 fan_min[12]; /* Register value combine */
237 s8 temp[6][5]; /* current, crit, crit_hyst,warn, warn_hyst */
238 u8 temp_low_bits; /* Additional resolution TD1-TD4 */
239 u8 temp_mode[2]; /* byte 0: Temp D1-D4 mode each has 2 bits
240 * byte 1: Temp R1,R2 mode, each has 1 bit
242 u8 temp_critical; /* If reached all fan will be at full speed */
243 u8 temp_fan_map[6]; /* Temp controls which pwm fan, bit field */
245 u8 has_pwm;
246 u8 has_temp;
247 u8 has_vid;
248 u8 pwm_enable; /* Register value, each Temp has 1 bit */
249 u8 pwm_uptime; /* Register value */
250 u8 pwm_downtime; /* Register value */
251 u8 pwm_default; /* All fan default pwm, next poweron valid */
252 u8 pwm[8][3]; /* Register value */
253 u8 pwm_stop_time[8];
254 u8 temp_cruise[6];
256 u8 alarms[5]; /* realtime status registers */
257 u8 beeps[5];
258 u8 beep_enable;
259 u8 tolerance[3]; /* Temp tolerance(Smart Fan I/II) */
260 u8 sf2_pwm[6][7]; /* Smart FanII: Fan duty cycle */
261 u8 sf2_temp[6][7]; /* Smart FanII: Temp level point */
263 /* watchdog */
264 struct i2c_client *client;
265 struct mutex watchdog_lock;
266 struct list_head list; /* member of the watchdog_data_list */
267 struct kref kref;
268 struct miscdevice watchdog_miscdev;
269 unsigned long watchdog_is_open;
270 char watchdog_expect_close;
271 char watchdog_name[10]; /* must be unique to avoid sysfs conflict */
272 unsigned int watchdog_caused_reboot;
273 int watchdog_timeout; /* watchdog timeout in minutes */
277 * Somewhat ugly :( global data pointer list with all devices, so that
278 * we can find our device data as when using misc_register. There is no
279 * other method to get to one's device data from the open file-op and
280 * for usage in the reboot notifier callback.
282 static LIST_HEAD(watchdog_data_list);
284 /* Note this lock not only protect list access, but also data.kref access */
285 static DEFINE_MUTEX(watchdog_data_mutex);
288 * Release our data struct when we're detached from the i2c client *and* all
289 * references to our watchdog device are released
291 static void w83793_release_resources(struct kref *ref)
293 struct w83793_data *data = container_of(ref, struct w83793_data, kref);
294 kfree(data);
297 static u8 w83793_read_value(struct i2c_client *client, u16 reg);
298 static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value);
299 static int w83793_probe(struct i2c_client *client,
300 const struct i2c_device_id *id);
301 static int w83793_detect(struct i2c_client *client,
302 struct i2c_board_info *info);
303 static int w83793_remove(struct i2c_client *client);
304 static void w83793_init_client(struct i2c_client *client);
305 static void w83793_update_nonvolatile(struct device *dev);
306 static struct w83793_data *w83793_update_device(struct device *dev);
308 static const struct i2c_device_id w83793_id[] = {
309 { "w83793", 0 },
312 MODULE_DEVICE_TABLE(i2c, w83793_id);
314 static struct i2c_driver w83793_driver = {
315 .class = I2C_CLASS_HWMON,
316 .driver = {
317 .name = "w83793",
319 .probe = w83793_probe,
320 .remove = w83793_remove,
321 .id_table = w83793_id,
322 .detect = w83793_detect,
323 .address_list = normal_i2c,
326 static ssize_t
327 show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
329 struct w83793_data *data = dev_get_drvdata(dev);
330 return sprintf(buf, "%d\n", data->vrm);
333 static ssize_t
334 show_vid(struct device *dev, struct device_attribute *attr, char *buf)
336 struct w83793_data *data = w83793_update_device(dev);
337 struct sensor_device_attribute_2 *sensor_attr =
338 to_sensor_dev_attr_2(attr);
339 int index = sensor_attr->index;
341 return sprintf(buf, "%d\n", vid_from_reg(data->vid[index], data->vrm));
344 static ssize_t
345 store_vrm(struct device *dev, struct device_attribute *attr,
346 const char *buf, size_t count)
348 struct w83793_data *data = dev_get_drvdata(dev);
349 unsigned long val;
350 int err;
352 err = kstrtoul(buf, 10, &val);
353 if (err)
354 return err;
356 if (val > 255)
357 return -EINVAL;
359 data->vrm = val;
360 return count;
363 #define ALARM_STATUS 0
364 #define BEEP_ENABLE 1
365 static ssize_t
366 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
368 struct w83793_data *data = w83793_update_device(dev);
369 struct sensor_device_attribute_2 *sensor_attr =
370 to_sensor_dev_attr_2(attr);
371 int nr = sensor_attr->nr;
372 int index = sensor_attr->index >> 3;
373 int bit = sensor_attr->index & 0x07;
374 u8 val;
376 if (nr == ALARM_STATUS) {
377 val = (data->alarms[index] >> (bit)) & 1;
378 } else { /* BEEP_ENABLE */
379 val = (data->beeps[index] >> (bit)) & 1;
382 return sprintf(buf, "%u\n", val);
385 static ssize_t
386 store_beep(struct device *dev, struct device_attribute *attr,
387 const char *buf, size_t count)
389 struct i2c_client *client = to_i2c_client(dev);
390 struct w83793_data *data = i2c_get_clientdata(client);
391 struct sensor_device_attribute_2 *sensor_attr =
392 to_sensor_dev_attr_2(attr);
393 int index = sensor_attr->index >> 3;
394 int shift = sensor_attr->index & 0x07;
395 u8 beep_bit = 1 << shift;
396 unsigned long val;
397 int err;
399 err = kstrtoul(buf, 10, &val);
400 if (err)
401 return err;
403 if (val > 1)
404 return -EINVAL;
406 mutex_lock(&data->update_lock);
407 data->beeps[index] = w83793_read_value(client, W83793_REG_BEEP(index));
408 data->beeps[index] &= ~beep_bit;
409 data->beeps[index] |= val << shift;
410 w83793_write_value(client, W83793_REG_BEEP(index), data->beeps[index]);
411 mutex_unlock(&data->update_lock);
413 return count;
416 static ssize_t
417 show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf)
419 struct w83793_data *data = w83793_update_device(dev);
420 return sprintf(buf, "%u\n", (data->beep_enable >> 1) & 0x01);
423 static ssize_t
424 store_beep_enable(struct device *dev, struct device_attribute *attr,
425 const char *buf, size_t count)
427 struct i2c_client *client = to_i2c_client(dev);
428 struct w83793_data *data = i2c_get_clientdata(client);
429 unsigned long val;
430 int err;
432 err = kstrtoul(buf, 10, &val);
433 if (err)
434 return err;
436 if (val > 1)
437 return -EINVAL;
439 mutex_lock(&data->update_lock);
440 data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP)
441 & 0xfd;
442 data->beep_enable |= val << 1;
443 w83793_write_value(client, W83793_REG_OVT_BEEP, data->beep_enable);
444 mutex_unlock(&data->update_lock);
446 return count;
449 /* Write 0 to clear chassis alarm */
450 static ssize_t
451 store_chassis_clear(struct device *dev,
452 struct device_attribute *attr, const char *buf,
453 size_t count)
455 struct i2c_client *client = to_i2c_client(dev);
456 struct w83793_data *data = i2c_get_clientdata(client);
457 unsigned long val;
458 u8 reg;
459 int err;
461 err = kstrtoul(buf, 10, &val);
462 if (err)
463 return err;
464 if (val)
465 return -EINVAL;
467 mutex_lock(&data->update_lock);
468 reg = w83793_read_value(client, W83793_REG_CLR_CHASSIS);
469 w83793_write_value(client, W83793_REG_CLR_CHASSIS, reg | 0x80);
470 data->valid = 0; /* Force cache refresh */
471 mutex_unlock(&data->update_lock);
472 return count;
475 #define FAN_INPUT 0
476 #define FAN_MIN 1
477 static ssize_t
478 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
480 struct sensor_device_attribute_2 *sensor_attr =
481 to_sensor_dev_attr_2(attr);
482 int nr = sensor_attr->nr;
483 int index = sensor_attr->index;
484 struct w83793_data *data = w83793_update_device(dev);
485 u16 val;
487 if (nr == FAN_INPUT)
488 val = data->fan[index] & 0x0fff;
489 else
490 val = data->fan_min[index] & 0x0fff;
492 return sprintf(buf, "%lu\n", FAN_FROM_REG(val));
495 static ssize_t
496 store_fan_min(struct device *dev, struct device_attribute *attr,
497 const char *buf, size_t count)
499 struct sensor_device_attribute_2 *sensor_attr =
500 to_sensor_dev_attr_2(attr);
501 int index = sensor_attr->index;
502 struct i2c_client *client = to_i2c_client(dev);
503 struct w83793_data *data = i2c_get_clientdata(client);
504 unsigned long val;
505 int err;
507 err = kstrtoul(buf, 10, &val);
508 if (err)
509 return err;
510 val = FAN_TO_REG(val);
512 mutex_lock(&data->update_lock);
513 data->fan_min[index] = val;
514 w83793_write_value(client, W83793_REG_FAN_MIN(index),
515 (val >> 8) & 0xff);
516 w83793_write_value(client, W83793_REG_FAN_MIN(index) + 1, val & 0xff);
517 mutex_unlock(&data->update_lock);
519 return count;
522 static ssize_t
523 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
525 struct sensor_device_attribute_2 *sensor_attr =
526 to_sensor_dev_attr_2(attr);
527 struct w83793_data *data = w83793_update_device(dev);
528 u16 val;
529 int nr = sensor_attr->nr;
530 int index = sensor_attr->index;
532 if (nr == PWM_STOP_TIME)
533 val = TIME_FROM_REG(data->pwm_stop_time[index]);
534 else
535 val = (data->pwm[index][nr] & 0x3f) << 2;
537 return sprintf(buf, "%d\n", val);
540 static ssize_t
541 store_pwm(struct device *dev, struct device_attribute *attr,
542 const char *buf, size_t count)
544 struct i2c_client *client = to_i2c_client(dev);
545 struct w83793_data *data = i2c_get_clientdata(client);
546 struct sensor_device_attribute_2 *sensor_attr =
547 to_sensor_dev_attr_2(attr);
548 int nr = sensor_attr->nr;
549 int index = sensor_attr->index;
550 unsigned long val;
551 int err;
553 err = kstrtoul(buf, 10, &val);
554 if (err)
555 return err;
557 mutex_lock(&data->update_lock);
558 if (nr == PWM_STOP_TIME) {
559 val = TIME_TO_REG(val);
560 data->pwm_stop_time[index] = val;
561 w83793_write_value(client, W83793_REG_PWM_STOP_TIME(index),
562 val);
563 } else {
564 val = clamp_val(val, 0, 0xff) >> 2;
565 data->pwm[index][nr] =
566 w83793_read_value(client, W83793_REG_PWM(index, nr)) & 0xc0;
567 data->pwm[index][nr] |= val;
568 w83793_write_value(client, W83793_REG_PWM(index, nr),
569 data->pwm[index][nr]);
572 mutex_unlock(&data->update_lock);
573 return count;
576 static ssize_t
577 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
579 struct sensor_device_attribute_2 *sensor_attr =
580 to_sensor_dev_attr_2(attr);
581 int nr = sensor_attr->nr;
582 int index = sensor_attr->index;
583 struct w83793_data *data = w83793_update_device(dev);
584 long temp = TEMP_FROM_REG(data->temp[index][nr]);
586 if (nr == TEMP_READ && index < 4) { /* Only TD1-TD4 have low bits */
587 int low = ((data->temp_low_bits >> (index * 2)) & 0x03) * 250;
588 temp += temp > 0 ? low : -low;
590 return sprintf(buf, "%ld\n", temp);
593 static ssize_t
594 store_temp(struct device *dev, struct device_attribute *attr,
595 const char *buf, size_t count)
597 struct sensor_device_attribute_2 *sensor_attr =
598 to_sensor_dev_attr_2(attr);
599 int nr = sensor_attr->nr;
600 int index = sensor_attr->index;
601 struct i2c_client *client = to_i2c_client(dev);
602 struct w83793_data *data = i2c_get_clientdata(client);
603 long tmp;
604 int err;
606 err = kstrtol(buf, 10, &tmp);
607 if (err)
608 return err;
610 mutex_lock(&data->update_lock);
611 data->temp[index][nr] = TEMP_TO_REG(tmp, -128, 127);
612 w83793_write_value(client, W83793_REG_TEMP[index][nr],
613 data->temp[index][nr]);
614 mutex_unlock(&data->update_lock);
615 return count;
619 * TD1-TD4
620 * each has 4 mode:(2 bits)
621 * 0: Stop monitor
622 * 1: Use internal temp sensor(default)
623 * 2: Reserved
624 * 3: Use sensor in Intel CPU and get result by PECI
626 * TR1-TR2
627 * each has 2 mode:(1 bit)
628 * 0: Disable temp sensor monitor
629 * 1: To enable temp sensors monitor
632 /* 0 disable, 6 PECI */
633 static u8 TO_TEMP_MODE[] = { 0, 0, 0, 6 };
635 static ssize_t
636 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
638 struct w83793_data *data = w83793_update_device(dev);
639 struct sensor_device_attribute_2 *sensor_attr =
640 to_sensor_dev_attr_2(attr);
641 int index = sensor_attr->index;
642 u8 mask = (index < 4) ? 0x03 : 0x01;
643 u8 shift = (index < 4) ? (2 * index) : (index - 4);
644 u8 tmp;
645 index = (index < 4) ? 0 : 1;
647 tmp = (data->temp_mode[index] >> shift) & mask;
649 /* for the internal sensor, found out if diode or thermistor */
650 if (tmp == 1)
651 tmp = index == 0 ? 3 : 4;
652 else
653 tmp = TO_TEMP_MODE[tmp];
655 return sprintf(buf, "%d\n", tmp);
658 static ssize_t
659 store_temp_mode(struct device *dev, struct device_attribute *attr,
660 const char *buf, size_t count)
662 struct i2c_client *client = to_i2c_client(dev);
663 struct w83793_data *data = i2c_get_clientdata(client);
664 struct sensor_device_attribute_2 *sensor_attr =
665 to_sensor_dev_attr_2(attr);
666 int index = sensor_attr->index;
667 u8 mask = (index < 4) ? 0x03 : 0x01;
668 u8 shift = (index < 4) ? (2 * index) : (index - 4);
669 unsigned long val;
670 int err;
672 err = kstrtoul(buf, 10, &val);
673 if (err)
674 return err;
676 /* transform the sysfs interface values into table above */
677 if ((val == 6) && (index < 4)) {
678 val -= 3;
679 } else if ((val == 3 && index < 4)
680 || (val == 4 && index >= 4)) {
681 /* transform diode or thermistor into internal enable */
682 val = !!val;
683 } else {
684 return -EINVAL;
687 index = (index < 4) ? 0 : 1;
688 mutex_lock(&data->update_lock);
689 data->temp_mode[index] =
690 w83793_read_value(client, W83793_REG_TEMP_MODE[index]);
691 data->temp_mode[index] &= ~(mask << shift);
692 data->temp_mode[index] |= val << shift;
693 w83793_write_value(client, W83793_REG_TEMP_MODE[index],
694 data->temp_mode[index]);
695 mutex_unlock(&data->update_lock);
697 return count;
700 #define SETUP_PWM_DEFAULT 0
701 #define SETUP_PWM_UPTIME 1 /* Unit in 0.1s */
702 #define SETUP_PWM_DOWNTIME 2 /* Unit in 0.1s */
703 #define SETUP_TEMP_CRITICAL 3
704 static ssize_t
705 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
707 struct sensor_device_attribute_2 *sensor_attr =
708 to_sensor_dev_attr_2(attr);
709 int nr = sensor_attr->nr;
710 struct w83793_data *data = w83793_update_device(dev);
711 u32 val = 0;
713 if (nr == SETUP_PWM_DEFAULT)
714 val = (data->pwm_default & 0x3f) << 2;
715 else if (nr == SETUP_PWM_UPTIME)
716 val = TIME_FROM_REG(data->pwm_uptime);
717 else if (nr == SETUP_PWM_DOWNTIME)
718 val = TIME_FROM_REG(data->pwm_downtime);
719 else if (nr == SETUP_TEMP_CRITICAL)
720 val = TEMP_FROM_REG(data->temp_critical & 0x7f);
722 return sprintf(buf, "%d\n", val);
725 static ssize_t
726 store_sf_setup(struct device *dev, struct device_attribute *attr,
727 const char *buf, size_t count)
729 struct sensor_device_attribute_2 *sensor_attr =
730 to_sensor_dev_attr_2(attr);
731 int nr = sensor_attr->nr;
732 struct i2c_client *client = to_i2c_client(dev);
733 struct w83793_data *data = i2c_get_clientdata(client);
734 long val;
735 int err;
737 err = kstrtol(buf, 10, &val);
738 if (err)
739 return err;
741 mutex_lock(&data->update_lock);
742 if (nr == SETUP_PWM_DEFAULT) {
743 data->pwm_default =
744 w83793_read_value(client, W83793_REG_PWM_DEFAULT) & 0xc0;
745 data->pwm_default |= clamp_val(val, 0, 0xff) >> 2;
746 w83793_write_value(client, W83793_REG_PWM_DEFAULT,
747 data->pwm_default);
748 } else if (nr == SETUP_PWM_UPTIME) {
749 data->pwm_uptime = TIME_TO_REG(val);
750 data->pwm_uptime += data->pwm_uptime == 0 ? 1 : 0;
751 w83793_write_value(client, W83793_REG_PWM_UPTIME,
752 data->pwm_uptime);
753 } else if (nr == SETUP_PWM_DOWNTIME) {
754 data->pwm_downtime = TIME_TO_REG(val);
755 data->pwm_downtime += data->pwm_downtime == 0 ? 1 : 0;
756 w83793_write_value(client, W83793_REG_PWM_DOWNTIME,
757 data->pwm_downtime);
758 } else { /* SETUP_TEMP_CRITICAL */
759 data->temp_critical =
760 w83793_read_value(client, W83793_REG_TEMP_CRITICAL) & 0x80;
761 data->temp_critical |= TEMP_TO_REG(val, 0, 0x7f);
762 w83793_write_value(client, W83793_REG_TEMP_CRITICAL,
763 data->temp_critical);
766 mutex_unlock(&data->update_lock);
767 return count;
771 * Temp SmartFan control
772 * TEMP_FAN_MAP
773 * Temp channel control which pwm fan, bitfield, bit 0 indicate pwm1...
774 * It's possible two or more temp channels control the same fan, w83793
775 * always prefers to pick the most critical request and applies it to
776 * the related Fan.
777 * It's possible one fan is not in any mapping of 6 temp channels, this
778 * means the fan is manual mode
780 * TEMP_PWM_ENABLE
781 * Each temp channel has its own SmartFan mode, and temp channel
782 * control fans that are set by TEMP_FAN_MAP
783 * 0: SmartFanII mode
784 * 1: Thermal Cruise Mode
786 * TEMP_CRUISE
787 * Target temperature in thermal cruise mode, w83793 will try to turn
788 * fan speed to keep the temperature of target device around this
789 * temperature.
791 * TEMP_TOLERANCE
792 * If Temp higher or lower than target with this tolerance, w83793
793 * will take actions to speed up or slow down the fan to keep the
794 * temperature within the tolerance range.
797 #define TEMP_FAN_MAP 0
798 #define TEMP_PWM_ENABLE 1
799 #define TEMP_CRUISE 2
800 #define TEMP_TOLERANCE 3
801 static ssize_t
802 show_sf_ctrl(struct device *dev, struct device_attribute *attr, char *buf)
804 struct sensor_device_attribute_2 *sensor_attr =
805 to_sensor_dev_attr_2(attr);
806 int nr = sensor_attr->nr;
807 int index = sensor_attr->index;
808 struct w83793_data *data = w83793_update_device(dev);
809 u32 val;
811 if (nr == TEMP_FAN_MAP) {
812 val = data->temp_fan_map[index];
813 } else if (nr == TEMP_PWM_ENABLE) {
814 /* +2 to transform into 2 and 3 to conform with sysfs intf */
815 val = ((data->pwm_enable >> index) & 0x01) + 2;
816 } else if (nr == TEMP_CRUISE) {
817 val = TEMP_FROM_REG(data->temp_cruise[index] & 0x7f);
818 } else { /* TEMP_TOLERANCE */
819 val = data->tolerance[index >> 1] >> ((index & 0x01) ? 4 : 0);
820 val = TEMP_FROM_REG(val & 0x0f);
822 return sprintf(buf, "%d\n", val);
825 static ssize_t
826 store_sf_ctrl(struct device *dev, struct device_attribute *attr,
827 const char *buf, size_t count)
829 struct sensor_device_attribute_2 *sensor_attr =
830 to_sensor_dev_attr_2(attr);
831 int nr = sensor_attr->nr;
832 int index = sensor_attr->index;
833 struct i2c_client *client = to_i2c_client(dev);
834 struct w83793_data *data = i2c_get_clientdata(client);
835 long val;
836 int err;
838 err = kstrtol(buf, 10, &val);
839 if (err)
840 return err;
842 mutex_lock(&data->update_lock);
843 if (nr == TEMP_FAN_MAP) {
844 val = clamp_val(val, 0, 255);
845 w83793_write_value(client, W83793_REG_TEMP_FAN_MAP(index), val);
846 data->temp_fan_map[index] = val;
847 } else if (nr == TEMP_PWM_ENABLE) {
848 if (val == 2 || val == 3) {
849 data->pwm_enable =
850 w83793_read_value(client, W83793_REG_PWM_ENABLE);
851 if (val - 2)
852 data->pwm_enable |= 1 << index;
853 else
854 data->pwm_enable &= ~(1 << index);
855 w83793_write_value(client, W83793_REG_PWM_ENABLE,
856 data->pwm_enable);
857 } else {
858 mutex_unlock(&data->update_lock);
859 return -EINVAL;
861 } else if (nr == TEMP_CRUISE) {
862 data->temp_cruise[index] =
863 w83793_read_value(client, W83793_REG_TEMP_CRUISE(index));
864 data->temp_cruise[index] &= 0x80;
865 data->temp_cruise[index] |= TEMP_TO_REG(val, 0, 0x7f);
867 w83793_write_value(client, W83793_REG_TEMP_CRUISE(index),
868 data->temp_cruise[index]);
869 } else { /* TEMP_TOLERANCE */
870 int i = index >> 1;
871 u8 shift = (index & 0x01) ? 4 : 0;
872 data->tolerance[i] =
873 w83793_read_value(client, W83793_REG_TEMP_TOL(i));
875 data->tolerance[i] &= ~(0x0f << shift);
876 data->tolerance[i] |= TEMP_TO_REG(val, 0, 0x0f) << shift;
877 w83793_write_value(client, W83793_REG_TEMP_TOL(i),
878 data->tolerance[i]);
881 mutex_unlock(&data->update_lock);
882 return count;
885 static ssize_t
886 show_sf2_pwm(struct device *dev, struct device_attribute *attr, char *buf)
888 struct sensor_device_attribute_2 *sensor_attr =
889 to_sensor_dev_attr_2(attr);
890 int nr = sensor_attr->nr;
891 int index = sensor_attr->index;
892 struct w83793_data *data = w83793_update_device(dev);
894 return sprintf(buf, "%d\n", (data->sf2_pwm[index][nr] & 0x3f) << 2);
897 static ssize_t
898 store_sf2_pwm(struct device *dev, struct device_attribute *attr,
899 const char *buf, size_t count)
901 struct i2c_client *client = to_i2c_client(dev);
902 struct w83793_data *data = i2c_get_clientdata(client);
903 struct sensor_device_attribute_2 *sensor_attr =
904 to_sensor_dev_attr_2(attr);
905 int nr = sensor_attr->nr;
906 int index = sensor_attr->index;
907 unsigned long val;
908 int err;
910 err = kstrtoul(buf, 10, &val);
911 if (err)
912 return err;
913 val = clamp_val(val, 0, 0xff) >> 2;
915 mutex_lock(&data->update_lock);
916 data->sf2_pwm[index][nr] =
917 w83793_read_value(client, W83793_REG_SF2_PWM(index, nr)) & 0xc0;
918 data->sf2_pwm[index][nr] |= val;
919 w83793_write_value(client, W83793_REG_SF2_PWM(index, nr),
920 data->sf2_pwm[index][nr]);
921 mutex_unlock(&data->update_lock);
922 return count;
925 static ssize_t
926 show_sf2_temp(struct device *dev, struct device_attribute *attr, char *buf)
928 struct sensor_device_attribute_2 *sensor_attr =
929 to_sensor_dev_attr_2(attr);
930 int nr = sensor_attr->nr;
931 int index = sensor_attr->index;
932 struct w83793_data *data = w83793_update_device(dev);
934 return sprintf(buf, "%ld\n",
935 TEMP_FROM_REG(data->sf2_temp[index][nr] & 0x7f));
938 static ssize_t
939 store_sf2_temp(struct device *dev, struct device_attribute *attr,
940 const char *buf, size_t count)
942 struct i2c_client *client = to_i2c_client(dev);
943 struct w83793_data *data = i2c_get_clientdata(client);
944 struct sensor_device_attribute_2 *sensor_attr =
945 to_sensor_dev_attr_2(attr);
946 int nr = sensor_attr->nr;
947 int index = sensor_attr->index;
948 long val;
949 int err;
951 err = kstrtol(buf, 10, &val);
952 if (err)
953 return err;
954 val = TEMP_TO_REG(val, 0, 0x7f);
956 mutex_lock(&data->update_lock);
957 data->sf2_temp[index][nr] =
958 w83793_read_value(client, W83793_REG_SF2_TEMP(index, nr)) & 0x80;
959 data->sf2_temp[index][nr] |= val;
960 w83793_write_value(client, W83793_REG_SF2_TEMP(index, nr),
961 data->sf2_temp[index][nr]);
962 mutex_unlock(&data->update_lock);
963 return count;
966 /* only Vcore A/B and Vtt have additional 2 bits precision */
967 static ssize_t
968 show_in(struct device *dev, struct device_attribute *attr, char *buf)
970 struct sensor_device_attribute_2 *sensor_attr =
971 to_sensor_dev_attr_2(attr);
972 int nr = sensor_attr->nr;
973 int index = sensor_attr->index;
974 struct w83793_data *data = w83793_update_device(dev);
975 u16 val = data->in[index][nr];
977 if (index < 3) {
978 val <<= 2;
979 val += (data->in_low_bits[nr] >> (index * 2)) & 0x3;
981 /* voltage inputs 5VDD and 5VSB needs 150mV offset */
982 val = val * scale_in[index] + scale_in_add[index];
983 return sprintf(buf, "%d\n", val);
986 static ssize_t
987 store_in(struct device *dev, struct device_attribute *attr,
988 const char *buf, size_t count)
990 struct sensor_device_attribute_2 *sensor_attr =
991 to_sensor_dev_attr_2(attr);
992 int nr = sensor_attr->nr;
993 int index = sensor_attr->index;
994 struct i2c_client *client = to_i2c_client(dev);
995 struct w83793_data *data = i2c_get_clientdata(client);
996 unsigned long val;
997 int err;
999 err = kstrtoul(buf, 10, &val);
1000 if (err)
1001 return err;
1002 val = (val + scale_in[index] / 2) / scale_in[index];
1004 mutex_lock(&data->update_lock);
1005 if (index > 2) {
1006 /* fix the limit values of 5VDD and 5VSB to ALARM mechanism */
1007 if (nr == 1 || nr == 2)
1008 val -= scale_in_add[index] / scale_in[index];
1009 val = clamp_val(val, 0, 255);
1010 } else {
1011 val = clamp_val(val, 0, 0x3FF);
1012 data->in_low_bits[nr] =
1013 w83793_read_value(client, W83793_REG_IN_LOW_BITS[nr]);
1014 data->in_low_bits[nr] &= ~(0x03 << (2 * index));
1015 data->in_low_bits[nr] |= (val & 0x03) << (2 * index);
1016 w83793_write_value(client, W83793_REG_IN_LOW_BITS[nr],
1017 data->in_low_bits[nr]);
1018 val >>= 2;
1020 data->in[index][nr] = val;
1021 w83793_write_value(client, W83793_REG_IN[index][nr],
1022 data->in[index][nr]);
1023 mutex_unlock(&data->update_lock);
1024 return count;
1027 #define NOT_USED -1
1029 #define SENSOR_ATTR_IN(index) \
1030 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \
1031 IN_READ, index), \
1032 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \
1033 store_in, IN_MAX, index), \
1034 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \
1035 store_in, IN_LOW, index), \
1036 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \
1037 NULL, ALARM_STATUS, index + ((index > 2) ? 1 : 0)), \
1038 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \
1039 show_alarm_beep, store_beep, BEEP_ENABLE, \
1040 index + ((index > 2) ? 1 : 0))
1042 #define SENSOR_ATTR_FAN(index) \
1043 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \
1044 NULL, ALARM_STATUS, index + 17), \
1045 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \
1046 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17), \
1047 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \
1048 NULL, FAN_INPUT, index - 1), \
1049 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \
1050 show_fan, store_fan_min, FAN_MIN, index - 1)
1052 #define SENSOR_ATTR_PWM(index) \
1053 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \
1054 store_pwm, PWM_DUTY, index - 1), \
1055 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \
1056 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \
1057 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \
1058 show_pwm, store_pwm, PWM_START, index - 1), \
1059 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \
1060 show_pwm, store_pwm, PWM_STOP_TIME, index - 1)
1062 #define SENSOR_ATTR_TEMP(index) \
1063 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR, \
1064 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \
1065 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \
1066 NULL, TEMP_READ, index - 1), \
1067 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \
1068 store_temp, TEMP_CRIT, index - 1), \
1069 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1070 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \
1071 SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \
1072 store_temp, TEMP_WARN, index - 1), \
1073 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR, \
1074 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \
1075 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1076 show_alarm_beep, NULL, ALARM_STATUS, index + 11), \
1077 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1078 show_alarm_beep, store_beep, BEEP_ENABLE, index + 11), \
1079 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, \
1080 S_IRUGO | S_IWUSR, show_sf_ctrl, store_sf_ctrl, \
1081 TEMP_FAN_MAP, index - 1), \
1082 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \
1083 show_sf_ctrl, store_sf_ctrl, TEMP_PWM_ENABLE, \
1084 index - 1), \
1085 SENSOR_ATTR_2(thermal_cruise##index, S_IRUGO | S_IWUSR, \
1086 show_sf_ctrl, store_sf_ctrl, TEMP_CRUISE, index - 1), \
1087 SENSOR_ATTR_2(tolerance##index, S_IRUGO | S_IWUSR, show_sf_ctrl,\
1088 store_sf_ctrl, TEMP_TOLERANCE, index - 1), \
1089 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1090 show_sf2_pwm, store_sf2_pwm, 0, index - 1), \
1091 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1092 show_sf2_pwm, store_sf2_pwm, 1, index - 1), \
1093 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1094 show_sf2_pwm, store_sf2_pwm, 2, index - 1), \
1095 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1096 show_sf2_pwm, store_sf2_pwm, 3, index - 1), \
1097 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1098 show_sf2_pwm, store_sf2_pwm, 4, index - 1), \
1099 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1100 show_sf2_pwm, store_sf2_pwm, 5, index - 1), \
1101 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1102 show_sf2_pwm, store_sf2_pwm, 6, index - 1), \
1103 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1104 show_sf2_temp, store_sf2_temp, 0, index - 1), \
1105 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1106 show_sf2_temp, store_sf2_temp, 1, index - 1), \
1107 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1108 show_sf2_temp, store_sf2_temp, 2, index - 1), \
1109 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1110 show_sf2_temp, store_sf2_temp, 3, index - 1), \
1111 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1112 show_sf2_temp, store_sf2_temp, 4, index - 1), \
1113 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1114 show_sf2_temp, store_sf2_temp, 5, index - 1), \
1115 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1116 show_sf2_temp, store_sf2_temp, 6, index - 1)
1118 static struct sensor_device_attribute_2 w83793_sensor_attr_2[] = {
1119 SENSOR_ATTR_IN(0),
1120 SENSOR_ATTR_IN(1),
1121 SENSOR_ATTR_IN(2),
1122 SENSOR_ATTR_IN(3),
1123 SENSOR_ATTR_IN(4),
1124 SENSOR_ATTR_IN(5),
1125 SENSOR_ATTR_IN(6),
1126 SENSOR_ATTR_IN(7),
1127 SENSOR_ATTR_IN(8),
1128 SENSOR_ATTR_IN(9),
1129 SENSOR_ATTR_FAN(1),
1130 SENSOR_ATTR_FAN(2),
1131 SENSOR_ATTR_FAN(3),
1132 SENSOR_ATTR_FAN(4),
1133 SENSOR_ATTR_FAN(5),
1134 SENSOR_ATTR_PWM(1),
1135 SENSOR_ATTR_PWM(2),
1136 SENSOR_ATTR_PWM(3),
1139 static struct sensor_device_attribute_2 w83793_temp[] = {
1140 SENSOR_ATTR_TEMP(1),
1141 SENSOR_ATTR_TEMP(2),
1142 SENSOR_ATTR_TEMP(3),
1143 SENSOR_ATTR_TEMP(4),
1144 SENSOR_ATTR_TEMP(5),
1145 SENSOR_ATTR_TEMP(6),
1148 /* Fan6-Fan12 */
1149 static struct sensor_device_attribute_2 w83793_left_fan[] = {
1150 SENSOR_ATTR_FAN(6),
1151 SENSOR_ATTR_FAN(7),
1152 SENSOR_ATTR_FAN(8),
1153 SENSOR_ATTR_FAN(9),
1154 SENSOR_ATTR_FAN(10),
1155 SENSOR_ATTR_FAN(11),
1156 SENSOR_ATTR_FAN(12),
1159 /* Pwm4-Pwm8 */
1160 static struct sensor_device_attribute_2 w83793_left_pwm[] = {
1161 SENSOR_ATTR_PWM(4),
1162 SENSOR_ATTR_PWM(5),
1163 SENSOR_ATTR_PWM(6),
1164 SENSOR_ATTR_PWM(7),
1165 SENSOR_ATTR_PWM(8),
1168 static struct sensor_device_attribute_2 w83793_vid[] = {
1169 SENSOR_ATTR_2(cpu0_vid, S_IRUGO, show_vid, NULL, NOT_USED, 0),
1170 SENSOR_ATTR_2(cpu1_vid, S_IRUGO, show_vid, NULL, NOT_USED, 1),
1172 static DEVICE_ATTR(vrm, S_IWUSR | S_IRUGO, show_vrm, store_vrm);
1174 static struct sensor_device_attribute_2 sda_single_files[] = {
1175 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep,
1176 store_chassis_clear, ALARM_STATUS, 30),
1177 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable,
1178 store_beep_enable, NOT_USED, NOT_USED),
1179 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1180 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1181 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1182 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1183 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1184 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1185 SENSOR_ATTR_2(temp_critical, S_IWUSR | S_IRUGO, show_sf_setup,
1186 store_sf_setup, SETUP_TEMP_CRITICAL, NOT_USED),
1189 static void w83793_init_client(struct i2c_client *client)
1191 if (reset)
1192 w83793_write_value(client, W83793_REG_CONFIG, 0x80);
1194 /* Start monitoring */
1195 w83793_write_value(client, W83793_REG_CONFIG,
1196 w83793_read_value(client, W83793_REG_CONFIG) | 0x01);
1200 * Watchdog routines
1203 static int watchdog_set_timeout(struct w83793_data *data, int timeout)
1205 unsigned int mtimeout;
1206 int ret;
1208 mtimeout = DIV_ROUND_UP(timeout, 60);
1210 if (mtimeout > 255)
1211 return -EINVAL;
1213 mutex_lock(&data->watchdog_lock);
1214 if (!data->client) {
1215 ret = -ENODEV;
1216 goto leave;
1219 data->watchdog_timeout = mtimeout;
1221 /* Set Timeout value (in Minutes) */
1222 w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT,
1223 data->watchdog_timeout);
1225 ret = mtimeout * 60;
1227 leave:
1228 mutex_unlock(&data->watchdog_lock);
1229 return ret;
1232 static int watchdog_get_timeout(struct w83793_data *data)
1234 int timeout;
1236 mutex_lock(&data->watchdog_lock);
1237 timeout = data->watchdog_timeout * 60;
1238 mutex_unlock(&data->watchdog_lock);
1240 return timeout;
1243 static int watchdog_trigger(struct w83793_data *data)
1245 int ret = 0;
1247 mutex_lock(&data->watchdog_lock);
1248 if (!data->client) {
1249 ret = -ENODEV;
1250 goto leave;
1253 /* Set Timeout value (in Minutes) */
1254 w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT,
1255 data->watchdog_timeout);
1257 leave:
1258 mutex_unlock(&data->watchdog_lock);
1259 return ret;
1262 static int watchdog_enable(struct w83793_data *data)
1264 int ret = 0;
1266 mutex_lock(&data->watchdog_lock);
1267 if (!data->client) {
1268 ret = -ENODEV;
1269 goto leave;
1272 /* Set initial timeout */
1273 w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT,
1274 data->watchdog_timeout);
1276 /* Enable Soft Watchdog */
1277 w83793_write_value(data->client, W83793_REG_WDT_LOCK, 0x55);
1279 leave:
1280 mutex_unlock(&data->watchdog_lock);
1281 return ret;
1284 static int watchdog_disable(struct w83793_data *data)
1286 int ret = 0;
1288 mutex_lock(&data->watchdog_lock);
1289 if (!data->client) {
1290 ret = -ENODEV;
1291 goto leave;
1294 /* Disable Soft Watchdog */
1295 w83793_write_value(data->client, W83793_REG_WDT_LOCK, 0xAA);
1297 leave:
1298 mutex_unlock(&data->watchdog_lock);
1299 return ret;
1302 static int watchdog_open(struct inode *inode, struct file *filp)
1304 struct w83793_data *pos, *data = NULL;
1305 int watchdog_is_open;
1308 * We get called from drivers/char/misc.c with misc_mtx hold, and we
1309 * call misc_register() from w83793_probe() with watchdog_data_mutex
1310 * hold, as misc_register() takes the misc_mtx lock, this is a possible
1311 * deadlock, so we use mutex_trylock here.
1313 if (!mutex_trylock(&watchdog_data_mutex))
1314 return -ERESTARTSYS;
1315 list_for_each_entry(pos, &watchdog_data_list, list) {
1316 if (pos->watchdog_miscdev.minor == iminor(inode)) {
1317 data = pos;
1318 break;
1322 /* Check, if device is already open */
1323 watchdog_is_open = test_and_set_bit(0, &data->watchdog_is_open);
1326 * Increase data reference counter (if not already done).
1327 * Note we can never not have found data, so we don't check for this
1329 if (!watchdog_is_open)
1330 kref_get(&data->kref);
1332 mutex_unlock(&watchdog_data_mutex);
1334 /* Check, if device is already open and possibly issue error */
1335 if (watchdog_is_open)
1336 return -EBUSY;
1338 /* Enable Soft Watchdog */
1339 watchdog_enable(data);
1341 /* Store pointer to data into filp's private data */
1342 filp->private_data = data;
1344 return nonseekable_open(inode, filp);
1347 static int watchdog_close(struct inode *inode, struct file *filp)
1349 struct w83793_data *data = filp->private_data;
1351 if (data->watchdog_expect_close) {
1352 watchdog_disable(data);
1353 data->watchdog_expect_close = 0;
1354 } else {
1355 watchdog_trigger(data);
1356 dev_crit(&data->client->dev,
1357 "unexpected close, not stopping watchdog!\n");
1360 clear_bit(0, &data->watchdog_is_open);
1362 /* Decrease data reference counter */
1363 mutex_lock(&watchdog_data_mutex);
1364 kref_put(&data->kref, w83793_release_resources);
1365 mutex_unlock(&watchdog_data_mutex);
1367 return 0;
1370 static ssize_t watchdog_write(struct file *filp, const char __user *buf,
1371 size_t count, loff_t *offset)
1373 ssize_t ret;
1374 struct w83793_data *data = filp->private_data;
1376 if (count) {
1377 if (!nowayout) {
1378 size_t i;
1380 /* Clear it in case it was set with a previous write */
1381 data->watchdog_expect_close = 0;
1383 for (i = 0; i != count; i++) {
1384 char c;
1385 if (get_user(c, buf + i))
1386 return -EFAULT;
1387 if (c == 'V')
1388 data->watchdog_expect_close = 1;
1391 ret = watchdog_trigger(data);
1392 if (ret < 0)
1393 return ret;
1395 return count;
1398 static long watchdog_ioctl(struct file *filp, unsigned int cmd,
1399 unsigned long arg)
1401 struct watchdog_info ident = {
1402 .options = WDIOF_KEEPALIVEPING |
1403 WDIOF_SETTIMEOUT |
1404 WDIOF_CARDRESET,
1405 .identity = "w83793 watchdog"
1408 int val, ret = 0;
1409 struct w83793_data *data = filp->private_data;
1411 switch (cmd) {
1412 case WDIOC_GETSUPPORT:
1413 if (!nowayout)
1414 ident.options |= WDIOF_MAGICCLOSE;
1415 if (copy_to_user((void __user *)arg, &ident, sizeof(ident)))
1416 ret = -EFAULT;
1417 break;
1419 case WDIOC_GETSTATUS:
1420 val = data->watchdog_caused_reboot ? WDIOF_CARDRESET : 0;
1421 ret = put_user(val, (int __user *)arg);
1422 break;
1424 case WDIOC_GETBOOTSTATUS:
1425 ret = put_user(0, (int __user *)arg);
1426 break;
1428 case WDIOC_KEEPALIVE:
1429 ret = watchdog_trigger(data);
1430 break;
1432 case WDIOC_GETTIMEOUT:
1433 val = watchdog_get_timeout(data);
1434 ret = put_user(val, (int __user *)arg);
1435 break;
1437 case WDIOC_SETTIMEOUT:
1438 if (get_user(val, (int __user *)arg)) {
1439 ret = -EFAULT;
1440 break;
1442 ret = watchdog_set_timeout(data, val);
1443 if (ret > 0)
1444 ret = put_user(ret, (int __user *)arg);
1445 break;
1447 case WDIOC_SETOPTIONS:
1448 if (get_user(val, (int __user *)arg)) {
1449 ret = -EFAULT;
1450 break;
1453 if (val & WDIOS_DISABLECARD)
1454 ret = watchdog_disable(data);
1455 else if (val & WDIOS_ENABLECARD)
1456 ret = watchdog_enable(data);
1457 else
1458 ret = -EINVAL;
1460 break;
1461 default:
1462 ret = -ENOTTY;
1464 return ret;
1467 static const struct file_operations watchdog_fops = {
1468 .owner = THIS_MODULE,
1469 .llseek = no_llseek,
1470 .open = watchdog_open,
1471 .release = watchdog_close,
1472 .write = watchdog_write,
1473 .unlocked_ioctl = watchdog_ioctl,
1477 * Notifier for system down
1480 static int watchdog_notify_sys(struct notifier_block *this, unsigned long code,
1481 void *unused)
1483 struct w83793_data *data = NULL;
1485 if (code == SYS_DOWN || code == SYS_HALT) {
1487 /* Disable each registered watchdog */
1488 mutex_lock(&watchdog_data_mutex);
1489 list_for_each_entry(data, &watchdog_data_list, list) {
1490 if (data->watchdog_miscdev.minor)
1491 watchdog_disable(data);
1493 mutex_unlock(&watchdog_data_mutex);
1496 return NOTIFY_DONE;
1500 * The WDT needs to learn about soft shutdowns in order to
1501 * turn the timebomb registers off.
1504 static struct notifier_block watchdog_notifier = {
1505 .notifier_call = watchdog_notify_sys,
1509 * Init / remove routines
1512 static int w83793_remove(struct i2c_client *client)
1514 struct w83793_data *data = i2c_get_clientdata(client);
1515 struct device *dev = &client->dev;
1516 int i, tmp;
1518 /* Unregister the watchdog (if registered) */
1519 if (data->watchdog_miscdev.minor) {
1520 misc_deregister(&data->watchdog_miscdev);
1522 if (data->watchdog_is_open) {
1523 dev_warn(&client->dev,
1524 "i2c client detached with watchdog open! "
1525 "Stopping watchdog.\n");
1526 watchdog_disable(data);
1529 mutex_lock(&watchdog_data_mutex);
1530 list_del(&data->list);
1531 mutex_unlock(&watchdog_data_mutex);
1533 /* Tell the watchdog code the client is gone */
1534 mutex_lock(&data->watchdog_lock);
1535 data->client = NULL;
1536 mutex_unlock(&data->watchdog_lock);
1539 /* Reset Configuration Register to Disable Watch Dog Registers */
1540 tmp = w83793_read_value(client, W83793_REG_CONFIG);
1541 w83793_write_value(client, W83793_REG_CONFIG, tmp & ~0x04);
1543 unregister_reboot_notifier(&watchdog_notifier);
1545 hwmon_device_unregister(data->hwmon_dev);
1547 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++)
1548 device_remove_file(dev,
1549 &w83793_sensor_attr_2[i].dev_attr);
1551 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
1552 device_remove_file(dev, &sda_single_files[i].dev_attr);
1554 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++)
1555 device_remove_file(dev, &w83793_vid[i].dev_attr);
1556 device_remove_file(dev, &dev_attr_vrm);
1558 for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++)
1559 device_remove_file(dev, &w83793_left_fan[i].dev_attr);
1561 for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++)
1562 device_remove_file(dev, &w83793_left_pwm[i].dev_attr);
1564 for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
1565 device_remove_file(dev, &w83793_temp[i].dev_attr);
1567 if (data->lm75[0] != NULL)
1568 i2c_unregister_device(data->lm75[0]);
1569 if (data->lm75[1] != NULL)
1570 i2c_unregister_device(data->lm75[1]);
1572 /* Decrease data reference counter */
1573 mutex_lock(&watchdog_data_mutex);
1574 kref_put(&data->kref, w83793_release_resources);
1575 mutex_unlock(&watchdog_data_mutex);
1577 return 0;
1580 static int
1581 w83793_detect_subclients(struct i2c_client *client)
1583 int i, id, err;
1584 int address = client->addr;
1585 u8 tmp;
1586 struct i2c_adapter *adapter = client->adapter;
1587 struct w83793_data *data = i2c_get_clientdata(client);
1589 id = i2c_adapter_id(adapter);
1590 if (force_subclients[0] == id && force_subclients[1] == address) {
1591 for (i = 2; i <= 3; i++) {
1592 if (force_subclients[i] < 0x48
1593 || force_subclients[i] > 0x4f) {
1594 dev_err(&client->dev,
1595 "invalid subclient "
1596 "address %d; must be 0x48-0x4f\n",
1597 force_subclients[i]);
1598 err = -EINVAL;
1599 goto ERROR_SC_0;
1602 w83793_write_value(client, W83793_REG_I2C_SUBADDR,
1603 (force_subclients[2] & 0x07) |
1604 ((force_subclients[3] & 0x07) << 4));
1607 tmp = w83793_read_value(client, W83793_REG_I2C_SUBADDR);
1608 if (!(tmp & 0x08))
1609 data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (tmp & 0x7));
1610 if (!(tmp & 0x80)) {
1611 if ((data->lm75[0] != NULL)
1612 && ((tmp & 0x7) == ((tmp >> 4) & 0x7))) {
1613 dev_err(&client->dev,
1614 "duplicate addresses 0x%x, "
1615 "use force_subclients\n", data->lm75[0]->addr);
1616 err = -ENODEV;
1617 goto ERROR_SC_1;
1619 data->lm75[1] = i2c_new_dummy(adapter,
1620 0x48 + ((tmp >> 4) & 0x7));
1623 return 0;
1625 /* Undo inits in case of errors */
1627 ERROR_SC_1:
1628 if (data->lm75[0] != NULL)
1629 i2c_unregister_device(data->lm75[0]);
1630 ERROR_SC_0:
1631 return err;
1634 /* Return 0 if detection is successful, -ENODEV otherwise */
1635 static int w83793_detect(struct i2c_client *client,
1636 struct i2c_board_info *info)
1638 u8 tmp, bank, chip_id;
1639 struct i2c_adapter *adapter = client->adapter;
1640 unsigned short address = client->addr;
1642 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1643 return -ENODEV;
1645 bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL);
1647 tmp = bank & 0x80 ? 0x5c : 0xa3;
1648 /* Check Winbond vendor ID */
1649 if (tmp != i2c_smbus_read_byte_data(client, W83793_REG_VENDORID)) {
1650 pr_debug("w83793: Detection failed at check vendor id\n");
1651 return -ENODEV;
1655 * If Winbond chip, address of chip and W83793_REG_I2C_ADDR
1656 * should match
1658 if ((bank & 0x07) == 0
1659 && i2c_smbus_read_byte_data(client, W83793_REG_I2C_ADDR) !=
1660 (address << 1)) {
1661 pr_debug("w83793: Detection failed at check i2c addr\n");
1662 return -ENODEV;
1665 /* Determine the chip type now */
1666 chip_id = i2c_smbus_read_byte_data(client, W83793_REG_CHIPID);
1667 if (chip_id != 0x7b)
1668 return -ENODEV;
1670 strlcpy(info->type, "w83793", I2C_NAME_SIZE);
1672 return 0;
1675 static int w83793_probe(struct i2c_client *client,
1676 const struct i2c_device_id *id)
1678 struct device *dev = &client->dev;
1679 const int watchdog_minors[] = { WATCHDOG_MINOR, 212, 213, 214, 215 };
1680 struct w83793_data *data;
1681 int i, tmp, val, err;
1682 int files_fan = ARRAY_SIZE(w83793_left_fan) / 7;
1683 int files_pwm = ARRAY_SIZE(w83793_left_pwm) / 5;
1684 int files_temp = ARRAY_SIZE(w83793_temp) / 6;
1686 data = kzalloc(sizeof(struct w83793_data), GFP_KERNEL);
1687 if (!data) {
1688 err = -ENOMEM;
1689 goto exit;
1692 i2c_set_clientdata(client, data);
1693 data->bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL);
1694 mutex_init(&data->update_lock);
1695 mutex_init(&data->watchdog_lock);
1696 INIT_LIST_HEAD(&data->list);
1697 kref_init(&data->kref);
1700 * Store client pointer in our data struct for watchdog usage
1701 * (where the client is found through a data ptr instead of the
1702 * otherway around)
1704 data->client = client;
1706 err = w83793_detect_subclients(client);
1707 if (err)
1708 goto free_mem;
1710 /* Initialize the chip */
1711 w83793_init_client(client);
1714 * Only fan 1-5 has their own input pins,
1715 * Pwm 1-3 has their own pins
1717 data->has_fan = 0x1f;
1718 data->has_pwm = 0x07;
1719 tmp = w83793_read_value(client, W83793_REG_MFC);
1720 val = w83793_read_value(client, W83793_REG_FANIN_CTRL);
1722 /* check the function of pins 49-56 */
1723 if (tmp & 0x80) {
1724 data->has_vid |= 0x2; /* has VIDB */
1725 } else {
1726 data->has_pwm |= 0x18; /* pwm 4,5 */
1727 if (val & 0x01) { /* fan 6 */
1728 data->has_fan |= 0x20;
1729 data->has_pwm |= 0x20;
1731 if (val & 0x02) { /* fan 7 */
1732 data->has_fan |= 0x40;
1733 data->has_pwm |= 0x40;
1735 if (!(tmp & 0x40) && (val & 0x04)) { /* fan 8 */
1736 data->has_fan |= 0x80;
1737 data->has_pwm |= 0x80;
1741 /* check the function of pins 37-40 */
1742 if (!(tmp & 0x29))
1743 data->has_vid |= 0x1; /* has VIDA */
1744 if (0x08 == (tmp & 0x0c)) {
1745 if (val & 0x08) /* fan 9 */
1746 data->has_fan |= 0x100;
1747 if (val & 0x10) /* fan 10 */
1748 data->has_fan |= 0x200;
1750 if (0x20 == (tmp & 0x30)) {
1751 if (val & 0x20) /* fan 11 */
1752 data->has_fan |= 0x400;
1753 if (val & 0x40) /* fan 12 */
1754 data->has_fan |= 0x800;
1757 if ((tmp & 0x01) && (val & 0x04)) { /* fan 8, second location */
1758 data->has_fan |= 0x80;
1759 data->has_pwm |= 0x80;
1762 tmp = w83793_read_value(client, W83793_REG_FANIN_SEL);
1763 if ((tmp & 0x01) && (val & 0x08)) { /* fan 9, second location */
1764 data->has_fan |= 0x100;
1766 if ((tmp & 0x02) && (val & 0x10)) { /* fan 10, second location */
1767 data->has_fan |= 0x200;
1769 if ((tmp & 0x04) && (val & 0x20)) { /* fan 11, second location */
1770 data->has_fan |= 0x400;
1772 if ((tmp & 0x08) && (val & 0x40)) { /* fan 12, second location */
1773 data->has_fan |= 0x800;
1776 /* check the temp1-6 mode, ignore former AMDSI selected inputs */
1777 tmp = w83793_read_value(client, W83793_REG_TEMP_MODE[0]);
1778 if (tmp & 0x01)
1779 data->has_temp |= 0x01;
1780 if (tmp & 0x04)
1781 data->has_temp |= 0x02;
1782 if (tmp & 0x10)
1783 data->has_temp |= 0x04;
1784 if (tmp & 0x40)
1785 data->has_temp |= 0x08;
1787 tmp = w83793_read_value(client, W83793_REG_TEMP_MODE[1]);
1788 if (tmp & 0x01)
1789 data->has_temp |= 0x10;
1790 if (tmp & 0x02)
1791 data->has_temp |= 0x20;
1793 /* Register sysfs hooks */
1794 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) {
1795 err = device_create_file(dev,
1796 &w83793_sensor_attr_2[i].dev_attr);
1797 if (err)
1798 goto exit_remove;
1801 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) {
1802 if (!(data->has_vid & (1 << i)))
1803 continue;
1804 err = device_create_file(dev, &w83793_vid[i].dev_attr);
1805 if (err)
1806 goto exit_remove;
1808 if (data->has_vid) {
1809 data->vrm = vid_which_vrm();
1810 err = device_create_file(dev, &dev_attr_vrm);
1811 if (err)
1812 goto exit_remove;
1815 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1816 err = device_create_file(dev, &sda_single_files[i].dev_attr);
1817 if (err)
1818 goto exit_remove;
1822 for (i = 0; i < 6; i++) {
1823 int j;
1824 if (!(data->has_temp & (1 << i)))
1825 continue;
1826 for (j = 0; j < files_temp; j++) {
1827 err = device_create_file(dev,
1828 &w83793_temp[(i) * files_temp
1829 + j].dev_attr);
1830 if (err)
1831 goto exit_remove;
1835 for (i = 5; i < 12; i++) {
1836 int j;
1837 if (!(data->has_fan & (1 << i)))
1838 continue;
1839 for (j = 0; j < files_fan; j++) {
1840 err = device_create_file(dev,
1841 &w83793_left_fan[(i - 5) * files_fan
1842 + j].dev_attr);
1843 if (err)
1844 goto exit_remove;
1848 for (i = 3; i < 8; i++) {
1849 int j;
1850 if (!(data->has_pwm & (1 << i)))
1851 continue;
1852 for (j = 0; j < files_pwm; j++) {
1853 err = device_create_file(dev,
1854 &w83793_left_pwm[(i - 3) * files_pwm
1855 + j].dev_attr);
1856 if (err)
1857 goto exit_remove;
1861 data->hwmon_dev = hwmon_device_register(dev);
1862 if (IS_ERR(data->hwmon_dev)) {
1863 err = PTR_ERR(data->hwmon_dev);
1864 goto exit_remove;
1867 /* Watchdog initialization */
1869 /* Register boot notifier */
1870 err = register_reboot_notifier(&watchdog_notifier);
1871 if (err != 0) {
1872 dev_err(&client->dev,
1873 "cannot register reboot notifier (err=%d)\n", err);
1874 goto exit_devunreg;
1878 * Enable Watchdog registers.
1879 * Set Configuration Register to Enable Watch Dog Registers
1880 * (Bit 2) = XXXX, X1XX.
1882 tmp = w83793_read_value(client, W83793_REG_CONFIG);
1883 w83793_write_value(client, W83793_REG_CONFIG, tmp | 0x04);
1885 /* Set the default watchdog timeout */
1886 data->watchdog_timeout = timeout;
1888 /* Check, if last reboot was caused by watchdog */
1889 data->watchdog_caused_reboot =
1890 w83793_read_value(data->client, W83793_REG_WDT_STATUS) & 0x01;
1892 /* Disable Soft Watchdog during initialiation */
1893 watchdog_disable(data);
1896 * We take the data_mutex lock early so that watchdog_open() cannot
1897 * run when misc_register() has completed, but we've not yet added
1898 * our data to the watchdog_data_list (and set the default timeout)
1900 mutex_lock(&watchdog_data_mutex);
1901 for (i = 0; i < ARRAY_SIZE(watchdog_minors); i++) {
1902 /* Register our watchdog part */
1903 snprintf(data->watchdog_name, sizeof(data->watchdog_name),
1904 "watchdog%c", (i == 0) ? '\0' : ('0' + i));
1905 data->watchdog_miscdev.name = data->watchdog_name;
1906 data->watchdog_miscdev.fops = &watchdog_fops;
1907 data->watchdog_miscdev.minor = watchdog_minors[i];
1909 err = misc_register(&data->watchdog_miscdev);
1910 if (err == -EBUSY)
1911 continue;
1912 if (err) {
1913 data->watchdog_miscdev.minor = 0;
1914 dev_err(&client->dev,
1915 "Registering watchdog chardev: %d\n", err);
1916 break;
1919 list_add(&data->list, &watchdog_data_list);
1921 dev_info(&client->dev,
1922 "Registered watchdog chardev major 10, minor: %d\n",
1923 watchdog_minors[i]);
1924 break;
1926 if (i == ARRAY_SIZE(watchdog_minors)) {
1927 data->watchdog_miscdev.minor = 0;
1928 dev_warn(&client->dev,
1929 "Couldn't register watchdog chardev (due to no free minor)\n");
1932 mutex_unlock(&watchdog_data_mutex);
1934 return 0;
1936 /* Unregister hwmon device */
1938 exit_devunreg:
1940 hwmon_device_unregister(data->hwmon_dev);
1942 /* Unregister sysfs hooks */
1944 exit_remove:
1945 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++)
1946 device_remove_file(dev, &w83793_sensor_attr_2[i].dev_attr);
1948 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
1949 device_remove_file(dev, &sda_single_files[i].dev_attr);
1951 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++)
1952 device_remove_file(dev, &w83793_vid[i].dev_attr);
1954 for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++)
1955 device_remove_file(dev, &w83793_left_fan[i].dev_attr);
1957 for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++)
1958 device_remove_file(dev, &w83793_left_pwm[i].dev_attr);
1960 for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
1961 device_remove_file(dev, &w83793_temp[i].dev_attr);
1963 if (data->lm75[0] != NULL)
1964 i2c_unregister_device(data->lm75[0]);
1965 if (data->lm75[1] != NULL)
1966 i2c_unregister_device(data->lm75[1]);
1967 free_mem:
1968 kfree(data);
1969 exit:
1970 return err;
1973 static void w83793_update_nonvolatile(struct device *dev)
1975 struct i2c_client *client = to_i2c_client(dev);
1976 struct w83793_data *data = i2c_get_clientdata(client);
1977 int i, j;
1979 * They are somewhat "stable" registers, and to update them every time
1980 * takes so much time, it's just not worthy. Update them in a long
1981 * interval to avoid exception.
1983 if (!(time_after(jiffies, data->last_nonvolatile + HZ * 300)
1984 || !data->valid))
1985 return;
1986 /* update voltage limits */
1987 for (i = 1; i < 3; i++) {
1988 for (j = 0; j < ARRAY_SIZE(data->in); j++) {
1989 data->in[j][i] =
1990 w83793_read_value(client, W83793_REG_IN[j][i]);
1992 data->in_low_bits[i] =
1993 w83793_read_value(client, W83793_REG_IN_LOW_BITS[i]);
1996 for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
1997 /* Update the Fan measured value and limits */
1998 if (!(data->has_fan & (1 << i)))
1999 continue;
2000 data->fan_min[i] =
2001 w83793_read_value(client, W83793_REG_FAN_MIN(i)) << 8;
2002 data->fan_min[i] |=
2003 w83793_read_value(client, W83793_REG_FAN_MIN(i) + 1);
2006 for (i = 0; i < ARRAY_SIZE(data->temp_fan_map); i++) {
2007 if (!(data->has_temp & (1 << i)))
2008 continue;
2009 data->temp_fan_map[i] =
2010 w83793_read_value(client, W83793_REG_TEMP_FAN_MAP(i));
2011 for (j = 1; j < 5; j++) {
2012 data->temp[i][j] =
2013 w83793_read_value(client, W83793_REG_TEMP[i][j]);
2015 data->temp_cruise[i] =
2016 w83793_read_value(client, W83793_REG_TEMP_CRUISE(i));
2017 for (j = 0; j < 7; j++) {
2018 data->sf2_pwm[i][j] =
2019 w83793_read_value(client, W83793_REG_SF2_PWM(i, j));
2020 data->sf2_temp[i][j] =
2021 w83793_read_value(client,
2022 W83793_REG_SF2_TEMP(i, j));
2026 for (i = 0; i < ARRAY_SIZE(data->temp_mode); i++)
2027 data->temp_mode[i] =
2028 w83793_read_value(client, W83793_REG_TEMP_MODE[i]);
2030 for (i = 0; i < ARRAY_SIZE(data->tolerance); i++) {
2031 data->tolerance[i] =
2032 w83793_read_value(client, W83793_REG_TEMP_TOL(i));
2035 for (i = 0; i < ARRAY_SIZE(data->pwm); i++) {
2036 if (!(data->has_pwm & (1 << i)))
2037 continue;
2038 data->pwm[i][PWM_NONSTOP] =
2039 w83793_read_value(client, W83793_REG_PWM(i, PWM_NONSTOP));
2040 data->pwm[i][PWM_START] =
2041 w83793_read_value(client, W83793_REG_PWM(i, PWM_START));
2042 data->pwm_stop_time[i] =
2043 w83793_read_value(client, W83793_REG_PWM_STOP_TIME(i));
2046 data->pwm_default = w83793_read_value(client, W83793_REG_PWM_DEFAULT);
2047 data->pwm_enable = w83793_read_value(client, W83793_REG_PWM_ENABLE);
2048 data->pwm_uptime = w83793_read_value(client, W83793_REG_PWM_UPTIME);
2049 data->pwm_downtime = w83793_read_value(client, W83793_REG_PWM_DOWNTIME);
2050 data->temp_critical =
2051 w83793_read_value(client, W83793_REG_TEMP_CRITICAL);
2052 data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP);
2054 for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
2055 data->beeps[i] = w83793_read_value(client, W83793_REG_BEEP(i));
2057 data->last_nonvolatile = jiffies;
2060 static struct w83793_data *w83793_update_device(struct device *dev)
2062 struct i2c_client *client = to_i2c_client(dev);
2063 struct w83793_data *data = i2c_get_clientdata(client);
2064 int i;
2066 mutex_lock(&data->update_lock);
2068 if (!(time_after(jiffies, data->last_updated + HZ * 2)
2069 || !data->valid))
2070 goto END;
2072 /* Update the voltages measured value and limits */
2073 for (i = 0; i < ARRAY_SIZE(data->in); i++)
2074 data->in[i][IN_READ] =
2075 w83793_read_value(client, W83793_REG_IN[i][IN_READ]);
2077 data->in_low_bits[IN_READ] =
2078 w83793_read_value(client, W83793_REG_IN_LOW_BITS[IN_READ]);
2080 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
2081 if (!(data->has_fan & (1 << i)))
2082 continue;
2083 data->fan[i] =
2084 w83793_read_value(client, W83793_REG_FAN(i)) << 8;
2085 data->fan[i] |=
2086 w83793_read_value(client, W83793_REG_FAN(i) + 1);
2089 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
2090 if (!(data->has_temp & (1 << i)))
2091 continue;
2092 data->temp[i][TEMP_READ] =
2093 w83793_read_value(client, W83793_REG_TEMP[i][TEMP_READ]);
2096 data->temp_low_bits =
2097 w83793_read_value(client, W83793_REG_TEMP_LOW_BITS);
2099 for (i = 0; i < ARRAY_SIZE(data->pwm); i++) {
2100 if (data->has_pwm & (1 << i))
2101 data->pwm[i][PWM_DUTY] =
2102 w83793_read_value(client,
2103 W83793_REG_PWM(i, PWM_DUTY));
2106 for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
2107 data->alarms[i] =
2108 w83793_read_value(client, W83793_REG_ALARM(i));
2109 if (data->has_vid & 0x01)
2110 data->vid[0] = w83793_read_value(client, W83793_REG_VID_INA);
2111 if (data->has_vid & 0x02)
2112 data->vid[1] = w83793_read_value(client, W83793_REG_VID_INB);
2113 w83793_update_nonvolatile(dev);
2114 data->last_updated = jiffies;
2115 data->valid = 1;
2117 END:
2118 mutex_unlock(&data->update_lock);
2119 return data;
2123 * Ignore the possibility that somebody change bank outside the driver
2124 * Must be called with data->update_lock held, except during initialization
2126 static u8 w83793_read_value(struct i2c_client *client, u16 reg)
2128 struct w83793_data *data = i2c_get_clientdata(client);
2129 u8 res = 0xff;
2130 u8 new_bank = reg >> 8;
2132 new_bank |= data->bank & 0xfc;
2133 if (data->bank != new_bank) {
2134 if (i2c_smbus_write_byte_data
2135 (client, W83793_REG_BANKSEL, new_bank) >= 0)
2136 data->bank = new_bank;
2137 else {
2138 dev_err(&client->dev,
2139 "set bank to %d failed, fall back "
2140 "to bank %d, read reg 0x%x error\n",
2141 new_bank, data->bank, reg);
2142 res = 0x0; /* read 0x0 from the chip */
2143 goto END;
2146 res = i2c_smbus_read_byte_data(client, reg & 0xff);
2147 END:
2148 return res;
2151 /* Must be called with data->update_lock held, except during initialization */
2152 static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value)
2154 struct w83793_data *data = i2c_get_clientdata(client);
2155 int res;
2156 u8 new_bank = reg >> 8;
2158 new_bank |= data->bank & 0xfc;
2159 if (data->bank != new_bank) {
2160 res = i2c_smbus_write_byte_data(client, W83793_REG_BANKSEL,
2161 new_bank);
2162 if (res < 0) {
2163 dev_err(&client->dev,
2164 "set bank to %d failed, fall back "
2165 "to bank %d, write reg 0x%x error\n",
2166 new_bank, data->bank, reg);
2167 goto END;
2169 data->bank = new_bank;
2172 res = i2c_smbus_write_byte_data(client, reg & 0xff, value);
2173 END:
2174 return res;
2177 module_i2c_driver(w83793_driver);
2179 MODULE_AUTHOR("Yuan Mu, Sven Anders");
2180 MODULE_DESCRIPTION("w83793 driver");
2181 MODULE_LICENSE("GPL");