1 // SPDX-License-Identifier: GPL-2.0-only
3 * w83793.c - Linux kernel driver for hardware monitoring
4 * Copyright (C) 2006 Winbond Electronics Corp.
6 * Rudolf Marek <r.marek@assembler.cz>
7 * Copyright (C) 2009-2010 Sven Anders <anders@anduras.de>, ANDURAS AG.
9 * (Based partially on fschmd driver,
10 * Copyright 2007-2008 by Hans de Goede)
14 * Supports following chips:
16 * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
17 * w83793 10 12 8 6 0x7b 0x5ca3 yes no
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/slab.h>
23 #include <linux/i2c.h>
24 #include <linux/hwmon.h>
25 #include <linux/hwmon-vid.h>
26 #include <linux/hwmon-sysfs.h>
27 #include <linux/err.h>
28 #include <linux/mutex.h>
30 #include <linux/watchdog.h>
31 #include <linux/miscdevice.h>
32 #include <linux/uaccess.h>
33 #include <linux/kref.h>
34 #include <linux/notifier.h>
35 #include <linux/reboot.h>
36 #include <linux/jiffies.h>
39 #define WATCHDOG_TIMEOUT 2 /* 2 minute default timeout */
41 /* Addresses to scan */
42 static const unsigned short normal_i2c
[] = { 0x2c, 0x2d, 0x2e, 0x2f,
45 /* Insmod parameters */
47 static unsigned short force_subclients
[4];
48 module_param_array(force_subclients
, short, NULL
, 0);
49 MODULE_PARM_DESC(force_subclients
,
50 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
53 module_param(reset
, bool, 0);
54 MODULE_PARM_DESC(reset
, "Set to 1 to reset chip, not recommended");
56 static int timeout
= WATCHDOG_TIMEOUT
; /* default timeout in minutes */
57 module_param(timeout
, int, 0);
58 MODULE_PARM_DESC(timeout
,
59 "Watchdog timeout in minutes. 2<= timeout <=255 (default="
60 __MODULE_STRING(WATCHDOG_TIMEOUT
) ")");
62 static bool nowayout
= WATCHDOG_NOWAYOUT
;
63 module_param(nowayout
, bool, 0);
64 MODULE_PARM_DESC(nowayout
,
65 "Watchdog cannot be stopped once started (default="
66 __MODULE_STRING(WATCHDOG_NOWAYOUT
) ")");
69 * Address 0x00, 0x0d, 0x0e, 0x0f in all three banks are reserved
70 * as ID, Bank Select registers
72 #define W83793_REG_BANKSEL 0x00
73 #define W83793_REG_VENDORID 0x0d
74 #define W83793_REG_CHIPID 0x0e
75 #define W83793_REG_DEVICEID 0x0f
77 #define W83793_REG_CONFIG 0x40
78 #define W83793_REG_MFC 0x58
79 #define W83793_REG_FANIN_CTRL 0x5c
80 #define W83793_REG_FANIN_SEL 0x5d
81 #define W83793_REG_I2C_ADDR 0x0b
82 #define W83793_REG_I2C_SUBADDR 0x0c
83 #define W83793_REG_VID_INA 0x05
84 #define W83793_REG_VID_INB 0x06
85 #define W83793_REG_VID_LATCHA 0x07
86 #define W83793_REG_VID_LATCHB 0x08
87 #define W83793_REG_VID_CTRL 0x59
89 #define W83793_REG_WDT_LOCK 0x01
90 #define W83793_REG_WDT_ENABLE 0x02
91 #define W83793_REG_WDT_STATUS 0x03
92 #define W83793_REG_WDT_TIMEOUT 0x04
94 static u16 W83793_REG_TEMP_MODE
[2] = { 0x5e, 0x5f };
98 #define TEMP_CRIT_HYST 2
100 #define TEMP_WARN_HYST 4
102 * only crit and crit_hyst affect real-time alarm status
103 * current crit crit_hyst warn warn_hyst
105 static u16 W83793_REG_TEMP
[][5] = {
106 {0x1c, 0x78, 0x79, 0x7a, 0x7b},
107 {0x1d, 0x7c, 0x7d, 0x7e, 0x7f},
108 {0x1e, 0x80, 0x81, 0x82, 0x83},
109 {0x1f, 0x84, 0x85, 0x86, 0x87},
110 {0x20, 0x88, 0x89, 0x8a, 0x8b},
111 {0x21, 0x8c, 0x8d, 0x8e, 0x8f},
114 #define W83793_REG_TEMP_LOW_BITS 0x22
116 #define W83793_REG_BEEP(index) (0x53 + (index))
117 #define W83793_REG_ALARM(index) (0x4b + (index))
119 #define W83793_REG_CLR_CHASSIS 0x4a /* SMI MASK4 */
120 #define W83793_REG_IRQ_CTRL 0x50
121 #define W83793_REG_OVT_CTRL 0x51
122 #define W83793_REG_OVT_BEEP 0x52
127 static const u16 W83793_REG_IN
[][3] = {
128 /* Current, High, Low */
129 {0x10, 0x60, 0x61}, /* Vcore A */
130 {0x11, 0x62, 0x63}, /* Vcore B */
131 {0x12, 0x64, 0x65}, /* Vtt */
132 {0x14, 0x6a, 0x6b}, /* VSEN1 */
133 {0x15, 0x6c, 0x6d}, /* VSEN2 */
134 {0x16, 0x6e, 0x6f}, /* +3VSEN */
135 {0x17, 0x70, 0x71}, /* +12VSEN */
136 {0x18, 0x72, 0x73}, /* 5VDD */
137 {0x19, 0x74, 0x75}, /* 5VSB */
138 {0x1a, 0x76, 0x77}, /* VBAT */
141 /* Low Bits of Vcore A/B Vtt Read/High/Low */
142 static const u16 W83793_REG_IN_LOW_BITS
[] = { 0x1b, 0x68, 0x69 };
143 static u8 scale_in
[] = { 2, 2, 2, 16, 16, 16, 8, 24, 24, 16 };
144 static u8 scale_in_add
[] = { 0, 0, 0, 0, 0, 0, 0, 150, 150, 0 };
146 #define W83793_REG_FAN(index) (0x23 + 2 * (index)) /* High byte */
147 #define W83793_REG_FAN_MIN(index) (0x90 + 2 * (index)) /* High byte */
149 #define W83793_REG_PWM_DEFAULT 0xb2
150 #define W83793_REG_PWM_ENABLE 0x207
151 #define W83793_REG_PWM_UPTIME 0xc3 /* Unit in 0.1 second */
152 #define W83793_REG_PWM_DOWNTIME 0xc4 /* Unit in 0.1 second */
153 #define W83793_REG_TEMP_CRITICAL 0xc5
157 #define PWM_NONSTOP 2
158 #define PWM_STOP_TIME 3
159 #define W83793_REG_PWM(index, nr) (((nr) == 0 ? 0xb3 : \
160 (nr) == 1 ? 0x220 : 0x218) + (index))
162 /* bit field, fan1 is bit0, fan2 is bit1 ... */
163 #define W83793_REG_TEMP_FAN_MAP(index) (0x201 + (index))
164 #define W83793_REG_TEMP_TOL(index) (0x208 + (index))
165 #define W83793_REG_TEMP_CRUISE(index) (0x210 + (index))
166 #define W83793_REG_PWM_STOP_TIME(index) (0x228 + (index))
167 #define W83793_REG_SF2_TEMP(index, nr) (0x230 + ((index) << 4) + (nr))
168 #define W83793_REG_SF2_PWM(index, nr) (0x238 + ((index) << 4) + (nr))
170 static inline unsigned long FAN_FROM_REG(u16 val
)
172 if ((val
>= 0xfff) || (val
== 0))
174 return 1350000UL / val
;
177 static inline u16
FAN_TO_REG(long rpm
)
181 return clamp_val((1350000 + (rpm
>> 1)) / rpm
, 1, 0xffe);
184 static inline unsigned long TIME_FROM_REG(u8 reg
)
189 static inline u8
TIME_TO_REG(unsigned long val
)
191 return clamp_val((val
+ 50) / 100, 0, 0xff);
194 static inline long TEMP_FROM_REG(s8 reg
)
199 static inline s8
TEMP_TO_REG(long val
, s8 min
, s8 max
)
201 return clamp_val((val
+ (val
< 0 ? -500 : 500)) / 1000, min
, max
);
205 struct device
*hwmon_dev
;
206 struct mutex update_lock
;
207 bool valid
; /* true if following fields are valid */
208 unsigned long last_updated
; /* In jiffies */
209 unsigned long last_nonvolatile
; /* In jiffies, last time we update the
210 * nonvolatile registers
216 u8 in
[10][3]; /* Register value, read/high/low */
217 u8 in_low_bits
[3]; /* Additional resolution for VCore A/B Vtt */
219 u16 has_fan
; /* Only fan1- fan5 has own pins */
220 u16 fan
[12]; /* Register value combine */
221 u16 fan_min
[12]; /* Register value combine */
223 s8 temp
[6][5]; /* current, crit, crit_hyst,warn, warn_hyst */
224 u8 temp_low_bits
; /* Additional resolution TD1-TD4 */
225 u8 temp_mode
[2]; /* byte 0: Temp D1-D4 mode each has 2 bits
226 * byte 1: Temp R1,R2 mode, each has 1 bit
228 u8 temp_critical
; /* If reached all fan will be at full speed */
229 u8 temp_fan_map
[6]; /* Temp controls which pwm fan, bit field */
234 u8 pwm_enable
; /* Register value, each Temp has 1 bit */
235 u8 pwm_uptime
; /* Register value */
236 u8 pwm_downtime
; /* Register value */
237 u8 pwm_default
; /* All fan default pwm, next poweron valid */
238 u8 pwm
[8][3]; /* Register value */
242 u8 alarms
[5]; /* realtime status registers */
245 u8 tolerance
[3]; /* Temp tolerance(Smart Fan I/II) */
246 u8 sf2_pwm
[6][7]; /* Smart FanII: Fan duty cycle */
247 u8 sf2_temp
[6][7]; /* Smart FanII: Temp level point */
250 struct i2c_client
*client
;
251 struct mutex watchdog_lock
;
252 struct list_head list
; /* member of the watchdog_data_list */
254 struct miscdevice watchdog_miscdev
;
255 unsigned long watchdog_is_open
;
256 char watchdog_expect_close
;
257 char watchdog_name
[10]; /* must be unique to avoid sysfs conflict */
258 unsigned int watchdog_caused_reboot
;
259 int watchdog_timeout
; /* watchdog timeout in minutes */
263 * Somewhat ugly :( global data pointer list with all devices, so that
264 * we can find our device data as when using misc_register. There is no
265 * other method to get to one's device data from the open file-op and
266 * for usage in the reboot notifier callback.
268 static LIST_HEAD(watchdog_data_list
);
270 /* Note this lock not only protect list access, but also data.kref access */
271 static DEFINE_MUTEX(watchdog_data_mutex
);
274 * Release our data struct when we're detached from the i2c client *and* all
275 * references to our watchdog device are released
277 static void w83793_release_resources(struct kref
*ref
)
279 struct w83793_data
*data
= container_of(ref
, struct w83793_data
, kref
);
283 static u8
w83793_read_value(struct i2c_client
*client
, u16 reg
);
284 static int w83793_write_value(struct i2c_client
*client
, u16 reg
, u8 value
);
285 static int w83793_probe(struct i2c_client
*client
);
286 static int w83793_detect(struct i2c_client
*client
,
287 struct i2c_board_info
*info
);
288 static void w83793_remove(struct i2c_client
*client
);
289 static void w83793_init_client(struct i2c_client
*client
);
290 static void w83793_update_nonvolatile(struct device
*dev
);
291 static struct w83793_data
*w83793_update_device(struct device
*dev
);
293 static const struct i2c_device_id w83793_id
[] = {
297 MODULE_DEVICE_TABLE(i2c
, w83793_id
);
299 static struct i2c_driver w83793_driver
= {
300 .class = I2C_CLASS_HWMON
,
304 .probe
= w83793_probe
,
305 .remove
= w83793_remove
,
306 .id_table
= w83793_id
,
307 .detect
= w83793_detect
,
308 .address_list
= normal_i2c
,
312 vrm_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
314 struct w83793_data
*data
= dev_get_drvdata(dev
);
315 return sprintf(buf
, "%d\n", data
->vrm
);
319 show_vid(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
321 struct w83793_data
*data
= w83793_update_device(dev
);
322 struct sensor_device_attribute_2
*sensor_attr
=
323 to_sensor_dev_attr_2(attr
);
324 int index
= sensor_attr
->index
;
326 return sprintf(buf
, "%d\n", vid_from_reg(data
->vid
[index
], data
->vrm
));
330 vrm_store(struct device
*dev
, struct device_attribute
*attr
,
331 const char *buf
, size_t count
)
333 struct w83793_data
*data
= dev_get_drvdata(dev
);
337 err
= kstrtoul(buf
, 10, &val
);
348 #define ALARM_STATUS 0
349 #define BEEP_ENABLE 1
351 show_alarm_beep(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
353 struct w83793_data
*data
= w83793_update_device(dev
);
354 struct sensor_device_attribute_2
*sensor_attr
=
355 to_sensor_dev_attr_2(attr
);
356 int nr
= sensor_attr
->nr
;
357 int index
= sensor_attr
->index
>> 3;
358 int bit
= sensor_attr
->index
& 0x07;
361 if (nr
== ALARM_STATUS
) {
362 val
= (data
->alarms
[index
] >> (bit
)) & 1;
363 } else { /* BEEP_ENABLE */
364 val
= (data
->beeps
[index
] >> (bit
)) & 1;
367 return sprintf(buf
, "%u\n", val
);
371 store_beep(struct device
*dev
, struct device_attribute
*attr
,
372 const char *buf
, size_t count
)
374 struct i2c_client
*client
= to_i2c_client(dev
);
375 struct w83793_data
*data
= i2c_get_clientdata(client
);
376 struct sensor_device_attribute_2
*sensor_attr
=
377 to_sensor_dev_attr_2(attr
);
378 int index
= sensor_attr
->index
>> 3;
379 int shift
= sensor_attr
->index
& 0x07;
380 u8 beep_bit
= 1 << shift
;
384 err
= kstrtoul(buf
, 10, &val
);
391 mutex_lock(&data
->update_lock
);
392 data
->beeps
[index
] = w83793_read_value(client
, W83793_REG_BEEP(index
));
393 data
->beeps
[index
] &= ~beep_bit
;
394 data
->beeps
[index
] |= val
<< shift
;
395 w83793_write_value(client
, W83793_REG_BEEP(index
), data
->beeps
[index
]);
396 mutex_unlock(&data
->update_lock
);
402 show_beep_enable(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
404 struct w83793_data
*data
= w83793_update_device(dev
);
405 return sprintf(buf
, "%u\n", (data
->beep_enable
>> 1) & 0x01);
409 store_beep_enable(struct device
*dev
, struct device_attribute
*attr
,
410 const char *buf
, size_t count
)
412 struct i2c_client
*client
= to_i2c_client(dev
);
413 struct w83793_data
*data
= i2c_get_clientdata(client
);
417 err
= kstrtoul(buf
, 10, &val
);
424 mutex_lock(&data
->update_lock
);
425 data
->beep_enable
= w83793_read_value(client
, W83793_REG_OVT_BEEP
)
427 data
->beep_enable
|= val
<< 1;
428 w83793_write_value(client
, W83793_REG_OVT_BEEP
, data
->beep_enable
);
429 mutex_unlock(&data
->update_lock
);
434 /* Write 0 to clear chassis alarm */
436 store_chassis_clear(struct device
*dev
,
437 struct device_attribute
*attr
, const char *buf
,
440 struct i2c_client
*client
= to_i2c_client(dev
);
441 struct w83793_data
*data
= i2c_get_clientdata(client
);
446 err
= kstrtoul(buf
, 10, &val
);
452 mutex_lock(&data
->update_lock
);
453 reg
= w83793_read_value(client
, W83793_REG_CLR_CHASSIS
);
454 w83793_write_value(client
, W83793_REG_CLR_CHASSIS
, reg
| 0x80);
455 data
->valid
= false; /* Force cache refresh */
456 mutex_unlock(&data
->update_lock
);
463 show_fan(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
465 struct sensor_device_attribute_2
*sensor_attr
=
466 to_sensor_dev_attr_2(attr
);
467 int nr
= sensor_attr
->nr
;
468 int index
= sensor_attr
->index
;
469 struct w83793_data
*data
= w83793_update_device(dev
);
473 val
= data
->fan
[index
] & 0x0fff;
475 val
= data
->fan_min
[index
] & 0x0fff;
477 return sprintf(buf
, "%lu\n", FAN_FROM_REG(val
));
481 store_fan_min(struct device
*dev
, struct device_attribute
*attr
,
482 const char *buf
, size_t count
)
484 struct sensor_device_attribute_2
*sensor_attr
=
485 to_sensor_dev_attr_2(attr
);
486 int index
= sensor_attr
->index
;
487 struct i2c_client
*client
= to_i2c_client(dev
);
488 struct w83793_data
*data
= i2c_get_clientdata(client
);
492 err
= kstrtoul(buf
, 10, &val
);
495 val
= FAN_TO_REG(val
);
497 mutex_lock(&data
->update_lock
);
498 data
->fan_min
[index
] = val
;
499 w83793_write_value(client
, W83793_REG_FAN_MIN(index
),
501 w83793_write_value(client
, W83793_REG_FAN_MIN(index
) + 1, val
& 0xff);
502 mutex_unlock(&data
->update_lock
);
508 show_pwm(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
510 struct sensor_device_attribute_2
*sensor_attr
=
511 to_sensor_dev_attr_2(attr
);
512 struct w83793_data
*data
= w83793_update_device(dev
);
514 int nr
= sensor_attr
->nr
;
515 int index
= sensor_attr
->index
;
517 if (nr
== PWM_STOP_TIME
)
518 val
= TIME_FROM_REG(data
->pwm_stop_time
[index
]);
520 val
= (data
->pwm
[index
][nr
] & 0x3f) << 2;
522 return sprintf(buf
, "%d\n", val
);
526 store_pwm(struct device
*dev
, struct device_attribute
*attr
,
527 const char *buf
, size_t count
)
529 struct i2c_client
*client
= to_i2c_client(dev
);
530 struct w83793_data
*data
= i2c_get_clientdata(client
);
531 struct sensor_device_attribute_2
*sensor_attr
=
532 to_sensor_dev_attr_2(attr
);
533 int nr
= sensor_attr
->nr
;
534 int index
= sensor_attr
->index
;
538 err
= kstrtoul(buf
, 10, &val
);
542 mutex_lock(&data
->update_lock
);
543 if (nr
== PWM_STOP_TIME
) {
544 val
= TIME_TO_REG(val
);
545 data
->pwm_stop_time
[index
] = val
;
546 w83793_write_value(client
, W83793_REG_PWM_STOP_TIME(index
),
549 val
= clamp_val(val
, 0, 0xff) >> 2;
550 data
->pwm
[index
][nr
] =
551 w83793_read_value(client
, W83793_REG_PWM(index
, nr
)) & 0xc0;
552 data
->pwm
[index
][nr
] |= val
;
553 w83793_write_value(client
, W83793_REG_PWM(index
, nr
),
554 data
->pwm
[index
][nr
]);
557 mutex_unlock(&data
->update_lock
);
562 show_temp(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
564 struct sensor_device_attribute_2
*sensor_attr
=
565 to_sensor_dev_attr_2(attr
);
566 int nr
= sensor_attr
->nr
;
567 int index
= sensor_attr
->index
;
568 struct w83793_data
*data
= w83793_update_device(dev
);
569 long temp
= TEMP_FROM_REG(data
->temp
[index
][nr
]);
571 if (nr
== TEMP_READ
&& index
< 4) { /* Only TD1-TD4 have low bits */
572 int low
= ((data
->temp_low_bits
>> (index
* 2)) & 0x03) * 250;
573 temp
+= temp
> 0 ? low
: -low
;
575 return sprintf(buf
, "%ld\n", temp
);
579 store_temp(struct device
*dev
, struct device_attribute
*attr
,
580 const char *buf
, size_t count
)
582 struct sensor_device_attribute_2
*sensor_attr
=
583 to_sensor_dev_attr_2(attr
);
584 int nr
= sensor_attr
->nr
;
585 int index
= sensor_attr
->index
;
586 struct i2c_client
*client
= to_i2c_client(dev
);
587 struct w83793_data
*data
= i2c_get_clientdata(client
);
591 err
= kstrtol(buf
, 10, &tmp
);
595 mutex_lock(&data
->update_lock
);
596 data
->temp
[index
][nr
] = TEMP_TO_REG(tmp
, -128, 127);
597 w83793_write_value(client
, W83793_REG_TEMP
[index
][nr
],
598 data
->temp
[index
][nr
]);
599 mutex_unlock(&data
->update_lock
);
605 * each has 4 mode:(2 bits)
607 * 1: Use internal temp sensor(default)
609 * 3: Use sensor in Intel CPU and get result by PECI
612 * each has 2 mode:(1 bit)
613 * 0: Disable temp sensor monitor
614 * 1: To enable temp sensors monitor
617 /* 0 disable, 6 PECI */
618 static u8 TO_TEMP_MODE
[] = { 0, 0, 0, 6 };
621 show_temp_mode(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
623 struct w83793_data
*data
= w83793_update_device(dev
);
624 struct sensor_device_attribute_2
*sensor_attr
=
625 to_sensor_dev_attr_2(attr
);
626 int index
= sensor_attr
->index
;
627 u8 mask
= (index
< 4) ? 0x03 : 0x01;
628 u8 shift
= (index
< 4) ? (2 * index
) : (index
- 4);
630 index
= (index
< 4) ? 0 : 1;
632 tmp
= (data
->temp_mode
[index
] >> shift
) & mask
;
634 /* for the internal sensor, found out if diode or thermistor */
636 tmp
= index
== 0 ? 3 : 4;
638 tmp
= TO_TEMP_MODE
[tmp
];
640 return sprintf(buf
, "%d\n", tmp
);
644 store_temp_mode(struct device
*dev
, struct device_attribute
*attr
,
645 const char *buf
, size_t count
)
647 struct i2c_client
*client
= to_i2c_client(dev
);
648 struct w83793_data
*data
= i2c_get_clientdata(client
);
649 struct sensor_device_attribute_2
*sensor_attr
=
650 to_sensor_dev_attr_2(attr
);
651 int index
= sensor_attr
->index
;
652 u8 mask
= (index
< 4) ? 0x03 : 0x01;
653 u8 shift
= (index
< 4) ? (2 * index
) : (index
- 4);
657 err
= kstrtoul(buf
, 10, &val
);
661 /* transform the sysfs interface values into table above */
662 if ((val
== 6) && (index
< 4)) {
664 } else if ((val
== 3 && index
< 4)
665 || (val
== 4 && index
>= 4)) {
666 /* transform diode or thermistor into internal enable */
672 index
= (index
< 4) ? 0 : 1;
673 mutex_lock(&data
->update_lock
);
674 data
->temp_mode
[index
] =
675 w83793_read_value(client
, W83793_REG_TEMP_MODE
[index
]);
676 data
->temp_mode
[index
] &= ~(mask
<< shift
);
677 data
->temp_mode
[index
] |= val
<< shift
;
678 w83793_write_value(client
, W83793_REG_TEMP_MODE
[index
],
679 data
->temp_mode
[index
]);
680 mutex_unlock(&data
->update_lock
);
685 #define SETUP_PWM_DEFAULT 0
686 #define SETUP_PWM_UPTIME 1 /* Unit in 0.1s */
687 #define SETUP_PWM_DOWNTIME 2 /* Unit in 0.1s */
688 #define SETUP_TEMP_CRITICAL 3
690 show_sf_setup(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
692 struct sensor_device_attribute_2
*sensor_attr
=
693 to_sensor_dev_attr_2(attr
);
694 int nr
= sensor_attr
->nr
;
695 struct w83793_data
*data
= w83793_update_device(dev
);
698 if (nr
== SETUP_PWM_DEFAULT
)
699 val
= (data
->pwm_default
& 0x3f) << 2;
700 else if (nr
== SETUP_PWM_UPTIME
)
701 val
= TIME_FROM_REG(data
->pwm_uptime
);
702 else if (nr
== SETUP_PWM_DOWNTIME
)
703 val
= TIME_FROM_REG(data
->pwm_downtime
);
704 else if (nr
== SETUP_TEMP_CRITICAL
)
705 val
= TEMP_FROM_REG(data
->temp_critical
& 0x7f);
707 return sprintf(buf
, "%d\n", val
);
711 store_sf_setup(struct device
*dev
, struct device_attribute
*attr
,
712 const char *buf
, size_t count
)
714 struct sensor_device_attribute_2
*sensor_attr
=
715 to_sensor_dev_attr_2(attr
);
716 int nr
= sensor_attr
->nr
;
717 struct i2c_client
*client
= to_i2c_client(dev
);
718 struct w83793_data
*data
= i2c_get_clientdata(client
);
722 err
= kstrtol(buf
, 10, &val
);
726 mutex_lock(&data
->update_lock
);
727 if (nr
== SETUP_PWM_DEFAULT
) {
729 w83793_read_value(client
, W83793_REG_PWM_DEFAULT
) & 0xc0;
730 data
->pwm_default
|= clamp_val(val
, 0, 0xff) >> 2;
731 w83793_write_value(client
, W83793_REG_PWM_DEFAULT
,
733 } else if (nr
== SETUP_PWM_UPTIME
) {
734 data
->pwm_uptime
= TIME_TO_REG(val
);
735 data
->pwm_uptime
+= data
->pwm_uptime
== 0 ? 1 : 0;
736 w83793_write_value(client
, W83793_REG_PWM_UPTIME
,
738 } else if (nr
== SETUP_PWM_DOWNTIME
) {
739 data
->pwm_downtime
= TIME_TO_REG(val
);
740 data
->pwm_downtime
+= data
->pwm_downtime
== 0 ? 1 : 0;
741 w83793_write_value(client
, W83793_REG_PWM_DOWNTIME
,
743 } else { /* SETUP_TEMP_CRITICAL */
744 data
->temp_critical
=
745 w83793_read_value(client
, W83793_REG_TEMP_CRITICAL
) & 0x80;
746 data
->temp_critical
|= TEMP_TO_REG(val
, 0, 0x7f);
747 w83793_write_value(client
, W83793_REG_TEMP_CRITICAL
,
748 data
->temp_critical
);
751 mutex_unlock(&data
->update_lock
);
756 * Temp SmartFan control
758 * Temp channel control which pwm fan, bitfield, bit 0 indicate pwm1...
759 * It's possible two or more temp channels control the same fan, w83793
760 * always prefers to pick the most critical request and applies it to
762 * It's possible one fan is not in any mapping of 6 temp channels, this
763 * means the fan is manual mode
766 * Each temp channel has its own SmartFan mode, and temp channel
767 * control fans that are set by TEMP_FAN_MAP
769 * 1: Thermal Cruise Mode
772 * Target temperature in thermal cruise mode, w83793 will try to turn
773 * fan speed to keep the temperature of target device around this
777 * If Temp higher or lower than target with this tolerance, w83793
778 * will take actions to speed up or slow down the fan to keep the
779 * temperature within the tolerance range.
782 #define TEMP_FAN_MAP 0
783 #define TEMP_PWM_ENABLE 1
784 #define TEMP_CRUISE 2
785 #define TEMP_TOLERANCE 3
787 show_sf_ctrl(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
789 struct sensor_device_attribute_2
*sensor_attr
=
790 to_sensor_dev_attr_2(attr
);
791 int nr
= sensor_attr
->nr
;
792 int index
= sensor_attr
->index
;
793 struct w83793_data
*data
= w83793_update_device(dev
);
796 if (nr
== TEMP_FAN_MAP
) {
797 val
= data
->temp_fan_map
[index
];
798 } else if (nr
== TEMP_PWM_ENABLE
) {
799 /* +2 to transform into 2 and 3 to conform with sysfs intf */
800 val
= ((data
->pwm_enable
>> index
) & 0x01) + 2;
801 } else if (nr
== TEMP_CRUISE
) {
802 val
= TEMP_FROM_REG(data
->temp_cruise
[index
] & 0x7f);
803 } else { /* TEMP_TOLERANCE */
804 val
= data
->tolerance
[index
>> 1] >> ((index
& 0x01) ? 4 : 0);
805 val
= TEMP_FROM_REG(val
& 0x0f);
807 return sprintf(buf
, "%d\n", val
);
811 store_sf_ctrl(struct device
*dev
, struct device_attribute
*attr
,
812 const char *buf
, size_t count
)
814 struct sensor_device_attribute_2
*sensor_attr
=
815 to_sensor_dev_attr_2(attr
);
816 int nr
= sensor_attr
->nr
;
817 int index
= sensor_attr
->index
;
818 struct i2c_client
*client
= to_i2c_client(dev
);
819 struct w83793_data
*data
= i2c_get_clientdata(client
);
823 err
= kstrtol(buf
, 10, &val
);
827 mutex_lock(&data
->update_lock
);
828 if (nr
== TEMP_FAN_MAP
) {
829 val
= clamp_val(val
, 0, 255);
830 w83793_write_value(client
, W83793_REG_TEMP_FAN_MAP(index
), val
);
831 data
->temp_fan_map
[index
] = val
;
832 } else if (nr
== TEMP_PWM_ENABLE
) {
833 if (val
== 2 || val
== 3) {
835 w83793_read_value(client
, W83793_REG_PWM_ENABLE
);
837 data
->pwm_enable
|= 1 << index
;
839 data
->pwm_enable
&= ~(1 << index
);
840 w83793_write_value(client
, W83793_REG_PWM_ENABLE
,
843 mutex_unlock(&data
->update_lock
);
846 } else if (nr
== TEMP_CRUISE
) {
847 data
->temp_cruise
[index
] =
848 w83793_read_value(client
, W83793_REG_TEMP_CRUISE(index
));
849 data
->temp_cruise
[index
] &= 0x80;
850 data
->temp_cruise
[index
] |= TEMP_TO_REG(val
, 0, 0x7f);
852 w83793_write_value(client
, W83793_REG_TEMP_CRUISE(index
),
853 data
->temp_cruise
[index
]);
854 } else { /* TEMP_TOLERANCE */
856 u8 shift
= (index
& 0x01) ? 4 : 0;
858 w83793_read_value(client
, W83793_REG_TEMP_TOL(i
));
860 data
->tolerance
[i
] &= ~(0x0f << shift
);
861 data
->tolerance
[i
] |= TEMP_TO_REG(val
, 0, 0x0f) << shift
;
862 w83793_write_value(client
, W83793_REG_TEMP_TOL(i
),
866 mutex_unlock(&data
->update_lock
);
871 show_sf2_pwm(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
873 struct sensor_device_attribute_2
*sensor_attr
=
874 to_sensor_dev_attr_2(attr
);
875 int nr
= sensor_attr
->nr
;
876 int index
= sensor_attr
->index
;
877 struct w83793_data
*data
= w83793_update_device(dev
);
879 return sprintf(buf
, "%d\n", (data
->sf2_pwm
[index
][nr
] & 0x3f) << 2);
883 store_sf2_pwm(struct device
*dev
, struct device_attribute
*attr
,
884 const char *buf
, size_t count
)
886 struct i2c_client
*client
= to_i2c_client(dev
);
887 struct w83793_data
*data
= i2c_get_clientdata(client
);
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
;
895 err
= kstrtoul(buf
, 10, &val
);
898 val
= clamp_val(val
, 0, 0xff) >> 2;
900 mutex_lock(&data
->update_lock
);
901 data
->sf2_pwm
[index
][nr
] =
902 w83793_read_value(client
, W83793_REG_SF2_PWM(index
, nr
)) & 0xc0;
903 data
->sf2_pwm
[index
][nr
] |= val
;
904 w83793_write_value(client
, W83793_REG_SF2_PWM(index
, nr
),
905 data
->sf2_pwm
[index
][nr
]);
906 mutex_unlock(&data
->update_lock
);
911 show_sf2_temp(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
913 struct sensor_device_attribute_2
*sensor_attr
=
914 to_sensor_dev_attr_2(attr
);
915 int nr
= sensor_attr
->nr
;
916 int index
= sensor_attr
->index
;
917 struct w83793_data
*data
= w83793_update_device(dev
);
919 return sprintf(buf
, "%ld\n",
920 TEMP_FROM_REG(data
->sf2_temp
[index
][nr
] & 0x7f));
924 store_sf2_temp(struct device
*dev
, struct device_attribute
*attr
,
925 const char *buf
, size_t count
)
927 struct i2c_client
*client
= to_i2c_client(dev
);
928 struct w83793_data
*data
= i2c_get_clientdata(client
);
929 struct sensor_device_attribute_2
*sensor_attr
=
930 to_sensor_dev_attr_2(attr
);
931 int nr
= sensor_attr
->nr
;
932 int index
= sensor_attr
->index
;
936 err
= kstrtol(buf
, 10, &val
);
939 val
= TEMP_TO_REG(val
, 0, 0x7f);
941 mutex_lock(&data
->update_lock
);
942 data
->sf2_temp
[index
][nr
] =
943 w83793_read_value(client
, W83793_REG_SF2_TEMP(index
, nr
)) & 0x80;
944 data
->sf2_temp
[index
][nr
] |= val
;
945 w83793_write_value(client
, W83793_REG_SF2_TEMP(index
, nr
),
946 data
->sf2_temp
[index
][nr
]);
947 mutex_unlock(&data
->update_lock
);
951 /* only Vcore A/B and Vtt have additional 2 bits precision */
953 show_in(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
955 struct sensor_device_attribute_2
*sensor_attr
=
956 to_sensor_dev_attr_2(attr
);
957 int nr
= sensor_attr
->nr
;
958 int index
= sensor_attr
->index
;
959 struct w83793_data
*data
= w83793_update_device(dev
);
960 u16 val
= data
->in
[index
][nr
];
964 val
+= (data
->in_low_bits
[nr
] >> (index
* 2)) & 0x3;
966 /* voltage inputs 5VDD and 5VSB needs 150mV offset */
967 val
= val
* scale_in
[index
] + scale_in_add
[index
];
968 return sprintf(buf
, "%d\n", val
);
972 store_in(struct device
*dev
, struct device_attribute
*attr
,
973 const char *buf
, size_t count
)
975 struct sensor_device_attribute_2
*sensor_attr
=
976 to_sensor_dev_attr_2(attr
);
977 int nr
= sensor_attr
->nr
;
978 int index
= sensor_attr
->index
;
979 struct i2c_client
*client
= to_i2c_client(dev
);
980 struct w83793_data
*data
= i2c_get_clientdata(client
);
984 err
= kstrtoul(buf
, 10, &val
);
987 val
= (val
+ scale_in
[index
] / 2) / scale_in
[index
];
989 mutex_lock(&data
->update_lock
);
991 /* fix the limit values of 5VDD and 5VSB to ALARM mechanism */
992 if (nr
== 1 || nr
== 2)
993 val
-= scale_in_add
[index
] / scale_in
[index
];
994 val
= clamp_val(val
, 0, 255);
996 val
= clamp_val(val
, 0, 0x3FF);
997 data
->in_low_bits
[nr
] =
998 w83793_read_value(client
, W83793_REG_IN_LOW_BITS
[nr
]);
999 data
->in_low_bits
[nr
] &= ~(0x03 << (2 * index
));
1000 data
->in_low_bits
[nr
] |= (val
& 0x03) << (2 * index
);
1001 w83793_write_value(client
, W83793_REG_IN_LOW_BITS
[nr
],
1002 data
->in_low_bits
[nr
]);
1005 data
->in
[index
][nr
] = val
;
1006 w83793_write_value(client
, W83793_REG_IN
[index
][nr
],
1007 data
->in
[index
][nr
]);
1008 mutex_unlock(&data
->update_lock
);
1014 #define SENSOR_ATTR_IN(index) \
1015 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \
1017 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \
1018 store_in, IN_MAX, index), \
1019 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \
1020 store_in, IN_LOW, index), \
1021 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \
1022 NULL, ALARM_STATUS, index + ((index > 2) ? 1 : 0)), \
1023 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \
1024 show_alarm_beep, store_beep, BEEP_ENABLE, \
1025 index + ((index > 2) ? 1 : 0))
1027 #define SENSOR_ATTR_FAN(index) \
1028 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \
1029 NULL, ALARM_STATUS, index + 17), \
1030 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \
1031 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17), \
1032 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \
1033 NULL, FAN_INPUT, index - 1), \
1034 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \
1035 show_fan, store_fan_min, FAN_MIN, index - 1)
1037 #define SENSOR_ATTR_PWM(index) \
1038 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \
1039 store_pwm, PWM_DUTY, index - 1), \
1040 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \
1041 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \
1042 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \
1043 show_pwm, store_pwm, PWM_START, index - 1), \
1044 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \
1045 show_pwm, store_pwm, PWM_STOP_TIME, index - 1)
1047 #define SENSOR_ATTR_TEMP(index) \
1048 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR, \
1049 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \
1050 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \
1051 NULL, TEMP_READ, index - 1), \
1052 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \
1053 store_temp, TEMP_CRIT, index - 1), \
1054 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1055 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \
1056 SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \
1057 store_temp, TEMP_WARN, index - 1), \
1058 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR, \
1059 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \
1060 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1061 show_alarm_beep, NULL, ALARM_STATUS, index + 11), \
1062 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1063 show_alarm_beep, store_beep, BEEP_ENABLE, index + 11), \
1064 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, \
1065 S_IRUGO | S_IWUSR, show_sf_ctrl, store_sf_ctrl, \
1066 TEMP_FAN_MAP, index - 1), \
1067 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \
1068 show_sf_ctrl, store_sf_ctrl, TEMP_PWM_ENABLE, \
1070 SENSOR_ATTR_2(thermal_cruise##index, S_IRUGO | S_IWUSR, \
1071 show_sf_ctrl, store_sf_ctrl, TEMP_CRUISE, index - 1), \
1072 SENSOR_ATTR_2(tolerance##index, S_IRUGO | S_IWUSR, show_sf_ctrl,\
1073 store_sf_ctrl, TEMP_TOLERANCE, index - 1), \
1074 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1075 show_sf2_pwm, store_sf2_pwm, 0, index - 1), \
1076 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1077 show_sf2_pwm, store_sf2_pwm, 1, index - 1), \
1078 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1079 show_sf2_pwm, store_sf2_pwm, 2, index - 1), \
1080 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1081 show_sf2_pwm, store_sf2_pwm, 3, index - 1), \
1082 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1083 show_sf2_pwm, store_sf2_pwm, 4, index - 1), \
1084 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1085 show_sf2_pwm, store_sf2_pwm, 5, index - 1), \
1086 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1087 show_sf2_pwm, store_sf2_pwm, 6, index - 1), \
1088 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1089 show_sf2_temp, store_sf2_temp, 0, index - 1), \
1090 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1091 show_sf2_temp, store_sf2_temp, 1, index - 1), \
1092 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1093 show_sf2_temp, store_sf2_temp, 2, index - 1), \
1094 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1095 show_sf2_temp, store_sf2_temp, 3, index - 1), \
1096 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1097 show_sf2_temp, store_sf2_temp, 4, index - 1), \
1098 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1099 show_sf2_temp, store_sf2_temp, 5, index - 1), \
1100 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1101 show_sf2_temp, store_sf2_temp, 6, index - 1)
1103 static struct sensor_device_attribute_2 w83793_sensor_attr_2
[] = {
1124 static struct sensor_device_attribute_2 w83793_temp
[] = {
1125 SENSOR_ATTR_TEMP(1),
1126 SENSOR_ATTR_TEMP(2),
1127 SENSOR_ATTR_TEMP(3),
1128 SENSOR_ATTR_TEMP(4),
1129 SENSOR_ATTR_TEMP(5),
1130 SENSOR_ATTR_TEMP(6),
1134 static struct sensor_device_attribute_2 w83793_left_fan
[] = {
1139 SENSOR_ATTR_FAN(10),
1140 SENSOR_ATTR_FAN(11),
1141 SENSOR_ATTR_FAN(12),
1145 static struct sensor_device_attribute_2 w83793_left_pwm
[] = {
1153 static struct sensor_device_attribute_2 w83793_vid
[] = {
1154 SENSOR_ATTR_2(cpu0_vid
, S_IRUGO
, show_vid
, NULL
, NOT_USED
, 0),
1155 SENSOR_ATTR_2(cpu1_vid
, S_IRUGO
, show_vid
, NULL
, NOT_USED
, 1),
1157 static DEVICE_ATTR_RW(vrm
);
1159 static struct sensor_device_attribute_2 sda_single_files
[] = {
1160 SENSOR_ATTR_2(intrusion0_alarm
, S_IWUSR
| S_IRUGO
, show_alarm_beep
,
1161 store_chassis_clear
, ALARM_STATUS
, 30),
1162 SENSOR_ATTR_2(beep_enable
, S_IWUSR
| S_IRUGO
, show_beep_enable
,
1163 store_beep_enable
, NOT_USED
, NOT_USED
),
1164 SENSOR_ATTR_2(pwm_default
, S_IWUSR
| S_IRUGO
, show_sf_setup
,
1165 store_sf_setup
, SETUP_PWM_DEFAULT
, NOT_USED
),
1166 SENSOR_ATTR_2(pwm_uptime
, S_IWUSR
| S_IRUGO
, show_sf_setup
,
1167 store_sf_setup
, SETUP_PWM_UPTIME
, NOT_USED
),
1168 SENSOR_ATTR_2(pwm_downtime
, S_IWUSR
| S_IRUGO
, show_sf_setup
,
1169 store_sf_setup
, SETUP_PWM_DOWNTIME
, NOT_USED
),
1170 SENSOR_ATTR_2(temp_critical
, S_IWUSR
| S_IRUGO
, show_sf_setup
,
1171 store_sf_setup
, SETUP_TEMP_CRITICAL
, NOT_USED
),
1174 static void w83793_init_client(struct i2c_client
*client
)
1177 w83793_write_value(client
, W83793_REG_CONFIG
, 0x80);
1179 /* Start monitoring */
1180 w83793_write_value(client
, W83793_REG_CONFIG
,
1181 w83793_read_value(client
, W83793_REG_CONFIG
) | 0x01);
1188 static int watchdog_set_timeout(struct w83793_data
*data
, int timeout
)
1190 unsigned int mtimeout
;
1193 mtimeout
= DIV_ROUND_UP(timeout
, 60);
1198 mutex_lock(&data
->watchdog_lock
);
1199 if (!data
->client
) {
1204 data
->watchdog_timeout
= mtimeout
;
1206 /* Set Timeout value (in Minutes) */
1207 w83793_write_value(data
->client
, W83793_REG_WDT_TIMEOUT
,
1208 data
->watchdog_timeout
);
1210 ret
= mtimeout
* 60;
1213 mutex_unlock(&data
->watchdog_lock
);
1217 static int watchdog_get_timeout(struct w83793_data
*data
)
1221 mutex_lock(&data
->watchdog_lock
);
1222 timeout
= data
->watchdog_timeout
* 60;
1223 mutex_unlock(&data
->watchdog_lock
);
1228 static int watchdog_trigger(struct w83793_data
*data
)
1232 mutex_lock(&data
->watchdog_lock
);
1233 if (!data
->client
) {
1238 /* Set Timeout value (in Minutes) */
1239 w83793_write_value(data
->client
, W83793_REG_WDT_TIMEOUT
,
1240 data
->watchdog_timeout
);
1243 mutex_unlock(&data
->watchdog_lock
);
1247 static int watchdog_enable(struct w83793_data
*data
)
1251 mutex_lock(&data
->watchdog_lock
);
1252 if (!data
->client
) {
1257 /* Set initial timeout */
1258 w83793_write_value(data
->client
, W83793_REG_WDT_TIMEOUT
,
1259 data
->watchdog_timeout
);
1261 /* Enable Soft Watchdog */
1262 w83793_write_value(data
->client
, W83793_REG_WDT_LOCK
, 0x55);
1265 mutex_unlock(&data
->watchdog_lock
);
1269 static int watchdog_disable(struct w83793_data
*data
)
1273 mutex_lock(&data
->watchdog_lock
);
1274 if (!data
->client
) {
1279 /* Disable Soft Watchdog */
1280 w83793_write_value(data
->client
, W83793_REG_WDT_LOCK
, 0xAA);
1283 mutex_unlock(&data
->watchdog_lock
);
1287 static int watchdog_open(struct inode
*inode
, struct file
*filp
)
1289 struct w83793_data
*pos
, *data
= NULL
;
1290 int watchdog_is_open
;
1293 * We get called from drivers/char/misc.c with misc_mtx hold, and we
1294 * call misc_register() from w83793_probe() with watchdog_data_mutex
1295 * hold, as misc_register() takes the misc_mtx lock, this is a possible
1296 * deadlock, so we use mutex_trylock here.
1298 if (!mutex_trylock(&watchdog_data_mutex
))
1299 return -ERESTARTSYS
;
1300 list_for_each_entry(pos
, &watchdog_data_list
, list
) {
1301 if (pos
->watchdog_miscdev
.minor
== iminor(inode
)) {
1307 /* Check, if device is already open */
1308 watchdog_is_open
= test_and_set_bit(0, &data
->watchdog_is_open
);
1311 * Increase data reference counter (if not already done).
1312 * Note we can never not have found data, so we don't check for this
1314 if (!watchdog_is_open
)
1315 kref_get(&data
->kref
);
1317 mutex_unlock(&watchdog_data_mutex
);
1319 /* Check, if device is already open and possibly issue error */
1320 if (watchdog_is_open
)
1323 /* Enable Soft Watchdog */
1324 watchdog_enable(data
);
1326 /* Store pointer to data into filp's private data */
1327 filp
->private_data
= data
;
1329 return stream_open(inode
, filp
);
1332 static int watchdog_close(struct inode
*inode
, struct file
*filp
)
1334 struct w83793_data
*data
= filp
->private_data
;
1336 if (data
->watchdog_expect_close
) {
1337 watchdog_disable(data
);
1338 data
->watchdog_expect_close
= 0;
1340 watchdog_trigger(data
);
1341 dev_crit(&data
->client
->dev
,
1342 "unexpected close, not stopping watchdog!\n");
1345 clear_bit(0, &data
->watchdog_is_open
);
1347 /* Decrease data reference counter */
1348 mutex_lock(&watchdog_data_mutex
);
1349 kref_put(&data
->kref
, w83793_release_resources
);
1350 mutex_unlock(&watchdog_data_mutex
);
1355 static ssize_t
watchdog_write(struct file
*filp
, const char __user
*buf
,
1356 size_t count
, loff_t
*offset
)
1359 struct w83793_data
*data
= filp
->private_data
;
1365 /* Clear it in case it was set with a previous write */
1366 data
->watchdog_expect_close
= 0;
1368 for (i
= 0; i
!= count
; i
++) {
1370 if (get_user(c
, buf
+ i
))
1373 data
->watchdog_expect_close
= 1;
1376 ret
= watchdog_trigger(data
);
1383 static long watchdog_ioctl(struct file
*filp
, unsigned int cmd
,
1386 struct watchdog_info ident
= {
1387 .options
= WDIOF_KEEPALIVEPING
|
1390 .identity
= "w83793 watchdog"
1394 struct w83793_data
*data
= filp
->private_data
;
1397 case WDIOC_GETSUPPORT
:
1399 ident
.options
|= WDIOF_MAGICCLOSE
;
1400 if (copy_to_user((void __user
*)arg
, &ident
, sizeof(ident
)))
1404 case WDIOC_GETSTATUS
:
1405 val
= data
->watchdog_caused_reboot
? WDIOF_CARDRESET
: 0;
1406 ret
= put_user(val
, (int __user
*)arg
);
1409 case WDIOC_GETBOOTSTATUS
:
1410 ret
= put_user(0, (int __user
*)arg
);
1413 case WDIOC_KEEPALIVE
:
1414 ret
= watchdog_trigger(data
);
1417 case WDIOC_GETTIMEOUT
:
1418 val
= watchdog_get_timeout(data
);
1419 ret
= put_user(val
, (int __user
*)arg
);
1422 case WDIOC_SETTIMEOUT
:
1423 if (get_user(val
, (int __user
*)arg
)) {
1427 ret
= watchdog_set_timeout(data
, val
);
1429 ret
= put_user(ret
, (int __user
*)arg
);
1432 case WDIOC_SETOPTIONS
:
1433 if (get_user(val
, (int __user
*)arg
)) {
1438 if (val
& WDIOS_DISABLECARD
)
1439 ret
= watchdog_disable(data
);
1440 else if (val
& WDIOS_ENABLECARD
)
1441 ret
= watchdog_enable(data
);
1452 static const struct file_operations watchdog_fops
= {
1453 .owner
= THIS_MODULE
,
1454 .llseek
= no_llseek
,
1455 .open
= watchdog_open
,
1456 .release
= watchdog_close
,
1457 .write
= watchdog_write
,
1458 .unlocked_ioctl
= watchdog_ioctl
,
1459 .compat_ioctl
= compat_ptr_ioctl
,
1463 * Notifier for system down
1466 static int watchdog_notify_sys(struct notifier_block
*this, unsigned long code
,
1469 struct w83793_data
*data
= NULL
;
1471 if (code
== SYS_DOWN
|| code
== SYS_HALT
) {
1473 /* Disable each registered watchdog */
1474 mutex_lock(&watchdog_data_mutex
);
1475 list_for_each_entry(data
, &watchdog_data_list
, list
) {
1476 if (data
->watchdog_miscdev
.minor
)
1477 watchdog_disable(data
);
1479 mutex_unlock(&watchdog_data_mutex
);
1486 * The WDT needs to learn about soft shutdowns in order to
1487 * turn the timebomb registers off.
1490 static struct notifier_block watchdog_notifier
= {
1491 .notifier_call
= watchdog_notify_sys
,
1495 * Init / remove routines
1498 static void w83793_remove(struct i2c_client
*client
)
1500 struct w83793_data
*data
= i2c_get_clientdata(client
);
1501 struct device
*dev
= &client
->dev
;
1504 /* Unregister the watchdog (if registered) */
1505 if (data
->watchdog_miscdev
.minor
) {
1506 misc_deregister(&data
->watchdog_miscdev
);
1508 if (data
->watchdog_is_open
) {
1509 dev_warn(&client
->dev
,
1510 "i2c client detached with watchdog open! "
1511 "Stopping watchdog.\n");
1512 watchdog_disable(data
);
1515 mutex_lock(&watchdog_data_mutex
);
1516 list_del(&data
->list
);
1517 mutex_unlock(&watchdog_data_mutex
);
1519 /* Tell the watchdog code the client is gone */
1520 mutex_lock(&data
->watchdog_lock
);
1521 data
->client
= NULL
;
1522 mutex_unlock(&data
->watchdog_lock
);
1525 /* Reset Configuration Register to Disable Watch Dog Registers */
1526 tmp
= w83793_read_value(client
, W83793_REG_CONFIG
);
1527 w83793_write_value(client
, W83793_REG_CONFIG
, tmp
& ~0x04);
1529 unregister_reboot_notifier(&watchdog_notifier
);
1531 hwmon_device_unregister(data
->hwmon_dev
);
1533 for (i
= 0; i
< ARRAY_SIZE(w83793_sensor_attr_2
); i
++)
1534 device_remove_file(dev
,
1535 &w83793_sensor_attr_2
[i
].dev_attr
);
1537 for (i
= 0; i
< ARRAY_SIZE(sda_single_files
); i
++)
1538 device_remove_file(dev
, &sda_single_files
[i
].dev_attr
);
1540 for (i
= 0; i
< ARRAY_SIZE(w83793_vid
); i
++)
1541 device_remove_file(dev
, &w83793_vid
[i
].dev_attr
);
1542 device_remove_file(dev
, &dev_attr_vrm
);
1544 for (i
= 0; i
< ARRAY_SIZE(w83793_left_fan
); i
++)
1545 device_remove_file(dev
, &w83793_left_fan
[i
].dev_attr
);
1547 for (i
= 0; i
< ARRAY_SIZE(w83793_left_pwm
); i
++)
1548 device_remove_file(dev
, &w83793_left_pwm
[i
].dev_attr
);
1550 for (i
= 0; i
< ARRAY_SIZE(w83793_temp
); i
++)
1551 device_remove_file(dev
, &w83793_temp
[i
].dev_attr
);
1553 /* Decrease data reference counter */
1554 mutex_lock(&watchdog_data_mutex
);
1555 kref_put(&data
->kref
, w83793_release_resources
);
1556 mutex_unlock(&watchdog_data_mutex
);
1560 w83793_detect_subclients(struct i2c_client
*client
)
1563 int address
= client
->addr
;
1565 struct i2c_adapter
*adapter
= client
->adapter
;
1567 id
= i2c_adapter_id(adapter
);
1568 if (force_subclients
[0] == id
&& force_subclients
[1] == address
) {
1569 for (i
= 2; i
<= 3; i
++) {
1570 if (force_subclients
[i
] < 0x48
1571 || force_subclients
[i
] > 0x4f) {
1572 dev_err(&client
->dev
,
1573 "invalid subclient "
1574 "address %d; must be 0x48-0x4f\n",
1575 force_subclients
[i
]);
1579 w83793_write_value(client
, W83793_REG_I2C_SUBADDR
,
1580 (force_subclients
[2] & 0x07) |
1581 ((force_subclients
[3] & 0x07) << 4));
1584 tmp
= w83793_read_value(client
, W83793_REG_I2C_SUBADDR
);
1586 if (!(tmp
& 0x88) && (tmp
& 0x7) == ((tmp
>> 4) & 0x7)) {
1587 dev_err(&client
->dev
,
1588 "duplicate addresses 0x%x, use force_subclient\n", 0x48 + (tmp
& 0x7));
1593 devm_i2c_new_dummy_device(&client
->dev
, adapter
, 0x48 + (tmp
& 0x7));
1596 devm_i2c_new_dummy_device(&client
->dev
, adapter
, 0x48 + ((tmp
>> 4) & 0x7));
1601 /* Return 0 if detection is successful, -ENODEV otherwise */
1602 static int w83793_detect(struct i2c_client
*client
,
1603 struct i2c_board_info
*info
)
1605 u8 tmp
, bank
, chip_id
;
1606 struct i2c_adapter
*adapter
= client
->adapter
;
1607 unsigned short address
= client
->addr
;
1609 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
1612 bank
= i2c_smbus_read_byte_data(client
, W83793_REG_BANKSEL
);
1614 tmp
= bank
& 0x80 ? 0x5c : 0xa3;
1615 /* Check Winbond vendor ID */
1616 if (tmp
!= i2c_smbus_read_byte_data(client
, W83793_REG_VENDORID
)) {
1617 pr_debug("w83793: Detection failed at check vendor id\n");
1622 * If Winbond chip, address of chip and W83793_REG_I2C_ADDR
1625 if ((bank
& 0x07) == 0
1626 && i2c_smbus_read_byte_data(client
, W83793_REG_I2C_ADDR
) !=
1628 pr_debug("w83793: Detection failed at check i2c addr\n");
1632 /* Determine the chip type now */
1633 chip_id
= i2c_smbus_read_byte_data(client
, W83793_REG_CHIPID
);
1634 if (chip_id
!= 0x7b)
1637 strscpy(info
->type
, "w83793", I2C_NAME_SIZE
);
1642 static int w83793_probe(struct i2c_client
*client
)
1644 struct device
*dev
= &client
->dev
;
1645 static const int watchdog_minors
[] = {
1646 WATCHDOG_MINOR
, 212, 213, 214, 215
1648 struct w83793_data
*data
;
1649 int i
, tmp
, val
, err
;
1650 int files_fan
= ARRAY_SIZE(w83793_left_fan
) / 7;
1651 int files_pwm
= ARRAY_SIZE(w83793_left_pwm
) / 5;
1652 int files_temp
= ARRAY_SIZE(w83793_temp
) / 6;
1654 data
= kzalloc(sizeof(struct w83793_data
), GFP_KERNEL
);
1660 i2c_set_clientdata(client
, data
);
1661 data
->bank
= i2c_smbus_read_byte_data(client
, W83793_REG_BANKSEL
);
1662 mutex_init(&data
->update_lock
);
1663 mutex_init(&data
->watchdog_lock
);
1664 INIT_LIST_HEAD(&data
->list
);
1665 kref_init(&data
->kref
);
1668 * Store client pointer in our data struct for watchdog usage
1669 * (where the client is found through a data ptr instead of the
1672 data
->client
= client
;
1674 err
= w83793_detect_subclients(client
);
1678 /* Initialize the chip */
1679 w83793_init_client(client
);
1682 * Only fan 1-5 has their own input pins,
1683 * Pwm 1-3 has their own pins
1685 data
->has_fan
= 0x1f;
1686 data
->has_pwm
= 0x07;
1687 tmp
= w83793_read_value(client
, W83793_REG_MFC
);
1688 val
= w83793_read_value(client
, W83793_REG_FANIN_CTRL
);
1690 /* check the function of pins 49-56 */
1692 data
->has_vid
|= 0x2; /* has VIDB */
1694 data
->has_pwm
|= 0x18; /* pwm 4,5 */
1695 if (val
& 0x01) { /* fan 6 */
1696 data
->has_fan
|= 0x20;
1697 data
->has_pwm
|= 0x20;
1699 if (val
& 0x02) { /* fan 7 */
1700 data
->has_fan
|= 0x40;
1701 data
->has_pwm
|= 0x40;
1703 if (!(tmp
& 0x40) && (val
& 0x04)) { /* fan 8 */
1704 data
->has_fan
|= 0x80;
1705 data
->has_pwm
|= 0x80;
1709 /* check the function of pins 37-40 */
1711 data
->has_vid
|= 0x1; /* has VIDA */
1712 if (0x08 == (tmp
& 0x0c)) {
1713 if (val
& 0x08) /* fan 9 */
1714 data
->has_fan
|= 0x100;
1715 if (val
& 0x10) /* fan 10 */
1716 data
->has_fan
|= 0x200;
1718 if (0x20 == (tmp
& 0x30)) {
1719 if (val
& 0x20) /* fan 11 */
1720 data
->has_fan
|= 0x400;
1721 if (val
& 0x40) /* fan 12 */
1722 data
->has_fan
|= 0x800;
1725 if ((tmp
& 0x01) && (val
& 0x04)) { /* fan 8, second location */
1726 data
->has_fan
|= 0x80;
1727 data
->has_pwm
|= 0x80;
1730 tmp
= w83793_read_value(client
, W83793_REG_FANIN_SEL
);
1731 if ((tmp
& 0x01) && (val
& 0x08)) { /* fan 9, second location */
1732 data
->has_fan
|= 0x100;
1734 if ((tmp
& 0x02) && (val
& 0x10)) { /* fan 10, second location */
1735 data
->has_fan
|= 0x200;
1737 if ((tmp
& 0x04) && (val
& 0x20)) { /* fan 11, second location */
1738 data
->has_fan
|= 0x400;
1740 if ((tmp
& 0x08) && (val
& 0x40)) { /* fan 12, second location */
1741 data
->has_fan
|= 0x800;
1744 /* check the temp1-6 mode, ignore former AMDSI selected inputs */
1745 tmp
= w83793_read_value(client
, W83793_REG_TEMP_MODE
[0]);
1747 data
->has_temp
|= 0x01;
1749 data
->has_temp
|= 0x02;
1751 data
->has_temp
|= 0x04;
1753 data
->has_temp
|= 0x08;
1755 tmp
= w83793_read_value(client
, W83793_REG_TEMP_MODE
[1]);
1757 data
->has_temp
|= 0x10;
1759 data
->has_temp
|= 0x20;
1761 /* Register sysfs hooks */
1762 for (i
= 0; i
< ARRAY_SIZE(w83793_sensor_attr_2
); i
++) {
1763 err
= device_create_file(dev
,
1764 &w83793_sensor_attr_2
[i
].dev_attr
);
1769 for (i
= 0; i
< ARRAY_SIZE(w83793_vid
); i
++) {
1770 if (!(data
->has_vid
& (1 << i
)))
1772 err
= device_create_file(dev
, &w83793_vid
[i
].dev_attr
);
1776 if (data
->has_vid
) {
1777 data
->vrm
= vid_which_vrm();
1778 err
= device_create_file(dev
, &dev_attr_vrm
);
1783 for (i
= 0; i
< ARRAY_SIZE(sda_single_files
); i
++) {
1784 err
= device_create_file(dev
, &sda_single_files
[i
].dev_attr
);
1790 for (i
= 0; i
< 6; i
++) {
1792 if (!(data
->has_temp
& (1 << i
)))
1794 for (j
= 0; j
< files_temp
; j
++) {
1795 err
= device_create_file(dev
,
1796 &w83793_temp
[(i
) * files_temp
1803 for (i
= 5; i
< 12; i
++) {
1805 if (!(data
->has_fan
& (1 << i
)))
1807 for (j
= 0; j
< files_fan
; j
++) {
1808 err
= device_create_file(dev
,
1809 &w83793_left_fan
[(i
- 5) * files_fan
1816 for (i
= 3; i
< 8; i
++) {
1818 if (!(data
->has_pwm
& (1 << i
)))
1820 for (j
= 0; j
< files_pwm
; j
++) {
1821 err
= device_create_file(dev
,
1822 &w83793_left_pwm
[(i
- 3) * files_pwm
1829 data
->hwmon_dev
= hwmon_device_register(dev
);
1830 if (IS_ERR(data
->hwmon_dev
)) {
1831 err
= PTR_ERR(data
->hwmon_dev
);
1835 /* Watchdog initialization */
1837 /* Register boot notifier */
1838 err
= register_reboot_notifier(&watchdog_notifier
);
1840 dev_err(&client
->dev
,
1841 "cannot register reboot notifier (err=%d)\n", err
);
1846 * Enable Watchdog registers.
1847 * Set Configuration Register to Enable Watch Dog Registers
1848 * (Bit 2) = XXXX, X1XX.
1850 tmp
= w83793_read_value(client
, W83793_REG_CONFIG
);
1851 w83793_write_value(client
, W83793_REG_CONFIG
, tmp
| 0x04);
1853 /* Set the default watchdog timeout */
1854 data
->watchdog_timeout
= timeout
;
1856 /* Check, if last reboot was caused by watchdog */
1857 data
->watchdog_caused_reboot
=
1858 w83793_read_value(data
->client
, W83793_REG_WDT_STATUS
) & 0x01;
1860 /* Disable Soft Watchdog during initialiation */
1861 watchdog_disable(data
);
1864 * We take the data_mutex lock early so that watchdog_open() cannot
1865 * run when misc_register() has completed, but we've not yet added
1866 * our data to the watchdog_data_list (and set the default timeout)
1868 mutex_lock(&watchdog_data_mutex
);
1869 for (i
= 0; i
< ARRAY_SIZE(watchdog_minors
); i
++) {
1870 /* Register our watchdog part */
1871 snprintf(data
->watchdog_name
, sizeof(data
->watchdog_name
),
1872 "watchdog%c", (i
== 0) ? '\0' : ('0' + i
));
1873 data
->watchdog_miscdev
.name
= data
->watchdog_name
;
1874 data
->watchdog_miscdev
.fops
= &watchdog_fops
;
1875 data
->watchdog_miscdev
.minor
= watchdog_minors
[i
];
1877 err
= misc_register(&data
->watchdog_miscdev
);
1881 data
->watchdog_miscdev
.minor
= 0;
1882 dev_err(&client
->dev
,
1883 "Registering watchdog chardev: %d\n", err
);
1887 list_add(&data
->list
, &watchdog_data_list
);
1889 dev_info(&client
->dev
,
1890 "Registered watchdog chardev major 10, minor: %d\n",
1891 watchdog_minors
[i
]);
1894 if (i
== ARRAY_SIZE(watchdog_minors
)) {
1895 data
->watchdog_miscdev
.minor
= 0;
1896 dev_warn(&client
->dev
,
1897 "Couldn't register watchdog chardev (due to no free minor)\n");
1900 mutex_unlock(&watchdog_data_mutex
);
1904 /* Unregister hwmon device */
1908 hwmon_device_unregister(data
->hwmon_dev
);
1910 /* Unregister sysfs hooks */
1913 for (i
= 0; i
< ARRAY_SIZE(w83793_sensor_attr_2
); i
++)
1914 device_remove_file(dev
, &w83793_sensor_attr_2
[i
].dev_attr
);
1916 for (i
= 0; i
< ARRAY_SIZE(sda_single_files
); i
++)
1917 device_remove_file(dev
, &sda_single_files
[i
].dev_attr
);
1919 for (i
= 0; i
< ARRAY_SIZE(w83793_vid
); i
++)
1920 device_remove_file(dev
, &w83793_vid
[i
].dev_attr
);
1922 for (i
= 0; i
< ARRAY_SIZE(w83793_left_fan
); i
++)
1923 device_remove_file(dev
, &w83793_left_fan
[i
].dev_attr
);
1925 for (i
= 0; i
< ARRAY_SIZE(w83793_left_pwm
); i
++)
1926 device_remove_file(dev
, &w83793_left_pwm
[i
].dev_attr
);
1928 for (i
= 0; i
< ARRAY_SIZE(w83793_temp
); i
++)
1929 device_remove_file(dev
, &w83793_temp
[i
].dev_attr
);
1936 static void w83793_update_nonvolatile(struct device
*dev
)
1938 struct i2c_client
*client
= to_i2c_client(dev
);
1939 struct w83793_data
*data
= i2c_get_clientdata(client
);
1942 * They are somewhat "stable" registers, and to update them every time
1943 * takes so much time, it's just not worthy. Update them in a long
1944 * interval to avoid exception.
1946 if (!(time_after(jiffies
, data
->last_nonvolatile
+ HZ
* 300)
1949 /* update voltage limits */
1950 for (i
= 1; i
< 3; i
++) {
1951 for (j
= 0; j
< ARRAY_SIZE(data
->in
); j
++) {
1953 w83793_read_value(client
, W83793_REG_IN
[j
][i
]);
1955 data
->in_low_bits
[i
] =
1956 w83793_read_value(client
, W83793_REG_IN_LOW_BITS
[i
]);
1959 for (i
= 0; i
< ARRAY_SIZE(data
->fan_min
); i
++) {
1960 /* Update the Fan measured value and limits */
1961 if (!(data
->has_fan
& (1 << i
)))
1964 w83793_read_value(client
, W83793_REG_FAN_MIN(i
)) << 8;
1966 w83793_read_value(client
, W83793_REG_FAN_MIN(i
) + 1);
1969 for (i
= 0; i
< ARRAY_SIZE(data
->temp_fan_map
); i
++) {
1970 if (!(data
->has_temp
& (1 << i
)))
1972 data
->temp_fan_map
[i
] =
1973 w83793_read_value(client
, W83793_REG_TEMP_FAN_MAP(i
));
1974 for (j
= 1; j
< 5; j
++) {
1976 w83793_read_value(client
, W83793_REG_TEMP
[i
][j
]);
1978 data
->temp_cruise
[i
] =
1979 w83793_read_value(client
, W83793_REG_TEMP_CRUISE(i
));
1980 for (j
= 0; j
< 7; j
++) {
1981 data
->sf2_pwm
[i
][j
] =
1982 w83793_read_value(client
, W83793_REG_SF2_PWM(i
, j
));
1983 data
->sf2_temp
[i
][j
] =
1984 w83793_read_value(client
,
1985 W83793_REG_SF2_TEMP(i
, j
));
1989 for (i
= 0; i
< ARRAY_SIZE(data
->temp_mode
); i
++)
1990 data
->temp_mode
[i
] =
1991 w83793_read_value(client
, W83793_REG_TEMP_MODE
[i
]);
1993 for (i
= 0; i
< ARRAY_SIZE(data
->tolerance
); i
++) {
1994 data
->tolerance
[i
] =
1995 w83793_read_value(client
, W83793_REG_TEMP_TOL(i
));
1998 for (i
= 0; i
< ARRAY_SIZE(data
->pwm
); i
++) {
1999 if (!(data
->has_pwm
& (1 << i
)))
2001 data
->pwm
[i
][PWM_NONSTOP
] =
2002 w83793_read_value(client
, W83793_REG_PWM(i
, PWM_NONSTOP
));
2003 data
->pwm
[i
][PWM_START
] =
2004 w83793_read_value(client
, W83793_REG_PWM(i
, PWM_START
));
2005 data
->pwm_stop_time
[i
] =
2006 w83793_read_value(client
, W83793_REG_PWM_STOP_TIME(i
));
2009 data
->pwm_default
= w83793_read_value(client
, W83793_REG_PWM_DEFAULT
);
2010 data
->pwm_enable
= w83793_read_value(client
, W83793_REG_PWM_ENABLE
);
2011 data
->pwm_uptime
= w83793_read_value(client
, W83793_REG_PWM_UPTIME
);
2012 data
->pwm_downtime
= w83793_read_value(client
, W83793_REG_PWM_DOWNTIME
);
2013 data
->temp_critical
=
2014 w83793_read_value(client
, W83793_REG_TEMP_CRITICAL
);
2015 data
->beep_enable
= w83793_read_value(client
, W83793_REG_OVT_BEEP
);
2017 for (i
= 0; i
< ARRAY_SIZE(data
->beeps
); i
++)
2018 data
->beeps
[i
] = w83793_read_value(client
, W83793_REG_BEEP(i
));
2020 data
->last_nonvolatile
= jiffies
;
2023 static struct w83793_data
*w83793_update_device(struct device
*dev
)
2025 struct i2c_client
*client
= to_i2c_client(dev
);
2026 struct w83793_data
*data
= i2c_get_clientdata(client
);
2029 mutex_lock(&data
->update_lock
);
2031 if (!(time_after(jiffies
, data
->last_updated
+ HZ
* 2)
2035 /* Update the voltages measured value and limits */
2036 for (i
= 0; i
< ARRAY_SIZE(data
->in
); i
++)
2037 data
->in
[i
][IN_READ
] =
2038 w83793_read_value(client
, W83793_REG_IN
[i
][IN_READ
]);
2040 data
->in_low_bits
[IN_READ
] =
2041 w83793_read_value(client
, W83793_REG_IN_LOW_BITS
[IN_READ
]);
2043 for (i
= 0; i
< ARRAY_SIZE(data
->fan
); i
++) {
2044 if (!(data
->has_fan
& (1 << i
)))
2047 w83793_read_value(client
, W83793_REG_FAN(i
)) << 8;
2049 w83793_read_value(client
, W83793_REG_FAN(i
) + 1);
2052 for (i
= 0; i
< ARRAY_SIZE(data
->temp
); i
++) {
2053 if (!(data
->has_temp
& (1 << i
)))
2055 data
->temp
[i
][TEMP_READ
] =
2056 w83793_read_value(client
, W83793_REG_TEMP
[i
][TEMP_READ
]);
2059 data
->temp_low_bits
=
2060 w83793_read_value(client
, W83793_REG_TEMP_LOW_BITS
);
2062 for (i
= 0; i
< ARRAY_SIZE(data
->pwm
); i
++) {
2063 if (data
->has_pwm
& (1 << i
))
2064 data
->pwm
[i
][PWM_DUTY
] =
2065 w83793_read_value(client
,
2066 W83793_REG_PWM(i
, PWM_DUTY
));
2069 for (i
= 0; i
< ARRAY_SIZE(data
->alarms
); i
++)
2071 w83793_read_value(client
, W83793_REG_ALARM(i
));
2072 if (data
->has_vid
& 0x01)
2073 data
->vid
[0] = w83793_read_value(client
, W83793_REG_VID_INA
);
2074 if (data
->has_vid
& 0x02)
2075 data
->vid
[1] = w83793_read_value(client
, W83793_REG_VID_INB
);
2076 w83793_update_nonvolatile(dev
);
2077 data
->last_updated
= jiffies
;
2081 mutex_unlock(&data
->update_lock
);
2086 * Ignore the possibility that somebody change bank outside the driver
2087 * Must be called with data->update_lock held, except during initialization
2089 static u8
w83793_read_value(struct i2c_client
*client
, u16 reg
)
2091 struct w83793_data
*data
= i2c_get_clientdata(client
);
2093 u8 new_bank
= reg
>> 8;
2095 new_bank
|= data
->bank
& 0xfc;
2096 if (data
->bank
!= new_bank
) {
2097 if (i2c_smbus_write_byte_data
2098 (client
, W83793_REG_BANKSEL
, new_bank
) >= 0)
2099 data
->bank
= new_bank
;
2101 dev_err(&client
->dev
,
2102 "set bank to %d failed, fall back "
2103 "to bank %d, read reg 0x%x error\n",
2104 new_bank
, data
->bank
, reg
);
2105 res
= 0x0; /* read 0x0 from the chip */
2109 res
= i2c_smbus_read_byte_data(client
, reg
& 0xff);
2114 /* Must be called with data->update_lock held, except during initialization */
2115 static int w83793_write_value(struct i2c_client
*client
, u16 reg
, u8 value
)
2117 struct w83793_data
*data
= i2c_get_clientdata(client
);
2119 u8 new_bank
= reg
>> 8;
2121 new_bank
|= data
->bank
& 0xfc;
2122 if (data
->bank
!= new_bank
) {
2123 res
= i2c_smbus_write_byte_data(client
, W83793_REG_BANKSEL
,
2126 dev_err(&client
->dev
,
2127 "set bank to %d failed, fall back "
2128 "to bank %d, write reg 0x%x error\n",
2129 new_bank
, data
->bank
, reg
);
2132 data
->bank
= new_bank
;
2135 res
= i2c_smbus_write_byte_data(client
, reg
& 0xff, value
);
2140 module_i2c_driver(w83793_driver
);
2142 MODULE_AUTHOR("Yuan Mu, Sven Anders");
2143 MODULE_DESCRIPTION("w83793 driver");
2144 MODULE_LICENSE("GPL");