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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / hwmon / w83793.c
blob67728f60333fe351715ccc03097f9aa2e135f384
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * w83793.c - Linux kernel driver for hardware monitoring
4 * Copyright (C) 2006 Winbond Electronics Corp.
5 * Yuan Mu
6 * Rudolf Marek <r.marek@assembler.cz>
7 * Copyright (C) 2009-2010 Sven Anders <anders@anduras.de>, ANDURAS AG.
8 * Watchdog driver part
9 * (Based partially on fschmd driver,
10 * Copyright 2007-2008 by Hans de Goede)
11 */
12
13 /*
14 * Supports following chips:
15 *
16 * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
17 * w83793 10 12 8 6 0x7b 0x5ca3 yes no
18 */
19
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>
29 #include <linux/fs.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>
37
38 /* Default values */
39 #define WATCHDOG_TIMEOUT 2 /* 2 minute default timeout */
40
41 /* Addresses to scan */
42 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
43 I2C_CLIENT_END };
44
45 /* Insmod parameters */
46
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}");
51
52 static bool reset;
53 module_param(reset, bool, 0);
54 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
55
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) ")");
61
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) ")");
67
68 /*
69 * Address 0x00, 0x0d, 0x0e, 0x0f in all three banks are reserved
70 * as ID, Bank Select registers
71 */
72 #define W83793_REG_BANKSEL 0x00
73 #define W83793_REG_VENDORID 0x0d
74 #define W83793_REG_CHIPID 0x0e
75 #define W83793_REG_DEVICEID 0x0f
76
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
88
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
93
94 static u16 W83793_REG_TEMP_MODE[2] = { 0x5e, 0x5f };
95
96 #define TEMP_READ 0
97 #define TEMP_CRIT 1
98 #define TEMP_CRIT_HYST 2
99 #define TEMP_WARN 3
100 #define TEMP_WARN_HYST 4
101 /*
102 * only crit and crit_hyst affect real-time alarm status
103 * current crit crit_hyst warn warn_hyst
104 */
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},
112 };
113
114 #define W83793_REG_TEMP_LOW_BITS 0x22
115
116 #define W83793_REG_BEEP(index) (0x53 + (index))
117 #define W83793_REG_ALARM(index) (0x4b + (index))
118
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
123
124 #define IN_READ 0
125 #define IN_MAX 1
126 #define IN_LOW 2
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 */
139 };
140
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 };
145
146 #define W83793_REG_FAN(index) (0x23 + 2 * (index)) /* High byte */
147 #define W83793_REG_FAN_MIN(index) (0x90 + 2 * (index)) /* High byte */
148
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
154
155 #define PWM_DUTY 0
156 #define PWM_START 1
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))
161
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))
169
170 static inline unsigned long FAN_FROM_REG(u16 val)
171 {
172 if ((val >= 0xfff) || (val == 0))
173 return 0;
174 return 1350000UL / val;
175 }
176
177 static inline u16 FAN_TO_REG(long rpm)
178 {
179 if (rpm <= 0)
180 return 0x0fff;
181 return clamp_val((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
182 }
183
184 static inline unsigned long TIME_FROM_REG(u8 reg)
185 {
186 return reg * 100;
187 }
188
189 static inline u8 TIME_TO_REG(unsigned long val)
190 {
191 return clamp_val((val + 50) / 100, 0, 0xff);
192 }
193
194 static inline long TEMP_FROM_REG(s8 reg)
195 {
196 return reg * 1000;
197 }
198
199 static inline s8 TEMP_TO_REG(long val, s8 min, s8 max)
200 {
201 return clamp_val((val + (val < 0 ? -500 : 500)) / 1000, min, max);
202 }
203
204 struct w83793_data {
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
211 */
212
213 u8 bank;
214 u8 vrm;
215 u8 vid[2];
216 u8 in[10][3]; /* Register value, read/high/low */
217 u8 in_low_bits[3]; /* Additional resolution for VCore A/B Vtt */
218
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 */
222
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
227 */
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 */
230
231 u8 has_pwm;
232 u8 has_temp;
233 u8 has_vid;
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 */
239 u8 pwm_stop_time[8];
240 u8 temp_cruise[6];
241
242 u8 alarms[5]; /* realtime status registers */
243 u8 beeps[5];
244 u8 beep_enable;
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 */
248
249 /* watchdog */
250 struct i2c_client *client;
251 struct mutex watchdog_lock;
252 struct list_head list; /* member of the watchdog_data_list */
253 struct kref kref;
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 */
260 };
261
262 /*
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.
267 */
268 static LIST_HEAD(watchdog_data_list);
269
270 /* Note this lock not only protect list access, but also data.kref access */
271 static DEFINE_MUTEX(watchdog_data_mutex);
272
273 /*
274 * Release our data struct when we're detached from the i2c client *and* all
275 * references to our watchdog device are released
276 */
277 static void w83793_release_resources(struct kref *ref)
278 {
279 struct w83793_data *data = container_of(ref, struct w83793_data, kref);
280 kfree(data);
281 }
282
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);
292
293 static const struct i2c_device_id w83793_id[] = {
294 { "w83793" },
295 { }
296 };
297 MODULE_DEVICE_TABLE(i2c, w83793_id);
298
299 static struct i2c_driver w83793_driver = {
300 .class = I2C_CLASS_HWMON,
301 .driver = {
302 .name = "w83793",
303 },
304 .probe = w83793_probe,
305 .remove = w83793_remove,
306 .id_table = w83793_id,
307 .detect = w83793_detect,
308 .address_list = normal_i2c,
309 };
310
311 static ssize_t
312 vrm_show(struct device *dev, struct device_attribute *attr, char *buf)
313 {
314 struct w83793_data *data = dev_get_drvdata(dev);
315 return sprintf(buf, "%d\n", data->vrm);
316 }
317
318 static ssize_t
319 show_vid(struct device *dev, struct device_attribute *attr, char *buf)
320 {
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;
325
326 return sprintf(buf, "%d\n", vid_from_reg(data->vid[index], data->vrm));
327 }
328
329 static ssize_t
330 vrm_store(struct device *dev, struct device_attribute *attr,
331 const char *buf, size_t count)
332 {
333 struct w83793_data *data = dev_get_drvdata(dev);
334 unsigned long val;
335 int err;
336
337 err = kstrtoul(buf, 10, &val);
338 if (err)
339 return err;
340
341 if (val > 255)
342 return -EINVAL;
343
344 data->vrm = val;
345 return count;
346 }
347
348 #define ALARM_STATUS 0
349 #define BEEP_ENABLE 1
350 static ssize_t
351 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
352 {
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;
359 u8 val;
360
361 if (nr == ALARM_STATUS) {
362 val = (data->alarms[index] >> (bit)) & 1;
363 } else { /* BEEP_ENABLE */
364 val = (data->beeps[index] >> (bit)) & 1;
365 }
366
367 return sprintf(buf, "%u\n", val);
368 }
369
370 static ssize_t
371 store_beep(struct device *dev, struct device_attribute *attr,
372 const char *buf, size_t count)
373 {
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;
381 unsigned long val;
382 int err;
383
384 err = kstrtoul(buf, 10, &val);
385 if (err)
386 return err;
387
388 if (val > 1)
389 return -EINVAL;
390
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);
397
398 return count;
399 }
400
401 static ssize_t
402 show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf)
403 {
404 struct w83793_data *data = w83793_update_device(dev);
405 return sprintf(buf, "%u\n", (data->beep_enable >> 1) & 0x01);
406 }
407
408 static ssize_t
409 store_beep_enable(struct device *dev, struct device_attribute *attr,
410 const char *buf, size_t count)
411 {
412 struct i2c_client *client = to_i2c_client(dev);
413 struct w83793_data *data = i2c_get_clientdata(client);
414 unsigned long val;
415 int err;
416
417 err = kstrtoul(buf, 10, &val);
418 if (err)
419 return err;
420
421 if (val > 1)
422 return -EINVAL;
423
424 mutex_lock(&data->update_lock);
425 data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP)
426 & 0xfd;
427 data->beep_enable |= val << 1;
428 w83793_write_value(client, W83793_REG_OVT_BEEP, data->beep_enable);
429 mutex_unlock(&data->update_lock);
430
431 return count;
432 }
433
434 /* Write 0 to clear chassis alarm */
435 static ssize_t
436 store_chassis_clear(struct device *dev,
437 struct device_attribute *attr, const char *buf,
438 size_t count)
439 {
440 struct i2c_client *client = to_i2c_client(dev);
441 struct w83793_data *data = i2c_get_clientdata(client);
442 unsigned long val;
443 u8 reg;
444 int err;
445
446 err = kstrtoul(buf, 10, &val);
447 if (err)
448 return err;
449 if (val)
450 return -EINVAL;
451
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);
457 return count;
458 }
459
460 #define FAN_INPUT 0
461 #define FAN_MIN 1
462 static ssize_t
463 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
464 {
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);
470 u16 val;
471
472 if (nr == FAN_INPUT)
473 val = data->fan[index] & 0x0fff;
474 else
475 val = data->fan_min[index] & 0x0fff;
476
477 return sprintf(buf, "%lu\n", FAN_FROM_REG(val));
478 }
479
480 static ssize_t
481 store_fan_min(struct device *dev, struct device_attribute *attr,
482 const char *buf, size_t count)
483 {
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);
489 unsigned long val;
490 int err;
491
492 err = kstrtoul(buf, 10, &val);
493 if (err)
494 return err;
495 val = FAN_TO_REG(val);
496
497 mutex_lock(&data->update_lock);
498 data->fan_min[index] = val;
499 w83793_write_value(client, W83793_REG_FAN_MIN(index),
500 (val >> 8) & 0xff);
501 w83793_write_value(client, W83793_REG_FAN_MIN(index) + 1, val & 0xff);
502 mutex_unlock(&data->update_lock);
503
504 return count;
505 }
506
507 static ssize_t
508 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
509 {
510 struct sensor_device_attribute_2 *sensor_attr =
511 to_sensor_dev_attr_2(attr);
512 struct w83793_data *data = w83793_update_device(dev);
513 u16 val;
514 int nr = sensor_attr->nr;
515 int index = sensor_attr->index;
516
517 if (nr == PWM_STOP_TIME)
518 val = TIME_FROM_REG(data->pwm_stop_time[index]);
519 else
520 val = (data->pwm[index][nr] & 0x3f) << 2;
521
522 return sprintf(buf, "%d\n", val);
523 }
524
525 static ssize_t
526 store_pwm(struct device *dev, struct device_attribute *attr,
527 const char *buf, size_t count)
528 {
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;
535 unsigned long val;
536 int err;
537
538 err = kstrtoul(buf, 10, &val);
539 if (err)
540 return err;
541
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),
547 val);
548 } else {
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]);
555 }
556
557 mutex_unlock(&data->update_lock);
558 return count;
559 }
560
561 static ssize_t
562 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
563 {
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]);
570
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;
574 }
575 return sprintf(buf, "%ld\n", temp);
576 }
577
578 static ssize_t
579 store_temp(struct device *dev, struct device_attribute *attr,
580 const char *buf, size_t count)
581 {
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);
588 long tmp;
589 int err;
590
591 err = kstrtol(buf, 10, &tmp);
592 if (err)
593 return err;
594
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);
600 return count;
601 }
602
603 /*
604 * TD1-TD4
605 * each has 4 mode:(2 bits)
606 * 0: Stop monitor
607 * 1: Use internal temp sensor(default)
608 * 2: Reserved
609 * 3: Use sensor in Intel CPU and get result by PECI
610 *
611 * TR1-TR2
612 * each has 2 mode:(1 bit)
613 * 0: Disable temp sensor monitor
614 * 1: To enable temp sensors monitor
615 */
616
617 /* 0 disable, 6 PECI */
618 static u8 TO_TEMP_MODE[] = { 0, 0, 0, 6 };
619
620 static ssize_t
621 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
622 {
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);
629 u8 tmp;
630 index = (index < 4) ? 0 : 1;
631
632 tmp = (data->temp_mode[index] >> shift) & mask;
633
634 /* for the internal sensor, found out if diode or thermistor */
635 if (tmp == 1)
636 tmp = index == 0 ? 3 : 4;
637 else
638 tmp = TO_TEMP_MODE[tmp];
639
640 return sprintf(buf, "%d\n", tmp);
641 }
642
643 static ssize_t
644 store_temp_mode(struct device *dev, struct device_attribute *attr,
645 const char *buf, size_t count)
646 {
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);
654 unsigned long val;
655 int err;
656
657 err = kstrtoul(buf, 10, &val);
658 if (err)
659 return err;
660
661 /* transform the sysfs interface values into table above */
662 if ((val == 6) && (index < 4)) {
663 val -= 3;
664 } else if ((val == 3 && index < 4)
665 || (val == 4 && index >= 4)) {
666 /* transform diode or thermistor into internal enable */
667 val = !!val;
668 } else {
669 return -EINVAL;
670 }
671
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);
681
682 return count;
683 }
684
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
689 static ssize_t
690 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
691 {
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);
696 u32 val = 0;
697
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);
706
707 return sprintf(buf, "%d\n", val);
708 }
709
710 static ssize_t
711 store_sf_setup(struct device *dev, struct device_attribute *attr,
712 const char *buf, size_t count)
713 {
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);
719 long val;
720 int err;
721
722 err = kstrtol(buf, 10, &val);
723 if (err)
724 return err;
725
726 mutex_lock(&data->update_lock);
727 if (nr == SETUP_PWM_DEFAULT) {
728 data->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,
732 data->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,
737 data->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,
742 data->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);
749 }
750
751 mutex_unlock(&data->update_lock);
752 return count;
753 }
754
755 /*
756 * Temp SmartFan control
757 * TEMP_FAN_MAP
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
761 * the related Fan.
762 * It's possible one fan is not in any mapping of 6 temp channels, this
763 * means the fan is manual mode
764 *
765 * TEMP_PWM_ENABLE
766 * Each temp channel has its own SmartFan mode, and temp channel
767 * control fans that are set by TEMP_FAN_MAP
768 * 0: SmartFanII mode
769 * 1: Thermal Cruise Mode
770 *
771 * TEMP_CRUISE
772 * Target temperature in thermal cruise mode, w83793 will try to turn
773 * fan speed to keep the temperature of target device around this
774 * temperature.
775 *
776 * TEMP_TOLERANCE
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.
780 */
781
782 #define TEMP_FAN_MAP 0
783 #define TEMP_PWM_ENABLE 1
784 #define TEMP_CRUISE 2
785 #define TEMP_TOLERANCE 3
786 static ssize_t
787 show_sf_ctrl(struct device *dev, struct device_attribute *attr, char *buf)
788 {
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);
794 u32 val;
795
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);
806 }
807 return sprintf(buf, "%d\n", val);
808 }
809
810 static ssize_t
811 store_sf_ctrl(struct device *dev, struct device_attribute *attr,
812 const char *buf, size_t count)
813 {
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);
820 long val;
821 int err;
822
823 err = kstrtol(buf, 10, &val);
824 if (err)
825 return err;
826
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) {
834 data->pwm_enable =
835 w83793_read_value(client, W83793_REG_PWM_ENABLE);
836 if (val - 2)
837 data->pwm_enable |= 1 << index;
838 else
839 data->pwm_enable &= ~(1 << index);
840 w83793_write_value(client, W83793_REG_PWM_ENABLE,
841 data->pwm_enable);
842 } else {
843 mutex_unlock(&data->update_lock);
844 return -EINVAL;
845 }
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);
851
852 w83793_write_value(client, W83793_REG_TEMP_CRUISE(index),
853 data->temp_cruise[index]);
854 } else { /* TEMP_TOLERANCE */
855 int i = index >> 1;
856 u8 shift = (index & 0x01) ? 4 : 0;
857 data->tolerance[i] =
858 w83793_read_value(client, W83793_REG_TEMP_TOL(i));
859
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),
863 data->tolerance[i]);
864 }
865
866 mutex_unlock(&data->update_lock);
867 return count;
868 }
869
870 static ssize_t
871 show_sf2_pwm(struct device *dev, struct device_attribute *attr, char *buf)
872 {
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);
878
879 return sprintf(buf, "%d\n", (data->sf2_pwm[index][nr] & 0x3f) << 2);
880 }
881
882 static ssize_t
883 store_sf2_pwm(struct device *dev, struct device_attribute *attr,
884 const char *buf, size_t count)
885 {
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;
892 unsigned long val;
893 int err;
894
895 err = kstrtoul(buf, 10, &val);
896 if (err)
897 return err;
898 val = clamp_val(val, 0, 0xff) >> 2;
899
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);
907 return count;
908 }
909
910 static ssize_t
911 show_sf2_temp(struct device *dev, struct device_attribute *attr, char *buf)
912 {
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);
918
919 return sprintf(buf, "%ld\n",
920 TEMP_FROM_REG(data->sf2_temp[index][nr] & 0x7f));
921 }
922
923 static ssize_t
924 store_sf2_temp(struct device *dev, struct device_attribute *attr,
925 const char *buf, size_t count)
926 {
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;
933 long val;
934 int err;
935
936 err = kstrtol(buf, 10, &val);
937 if (err)
938 return err;
939 val = TEMP_TO_REG(val, 0, 0x7f);
940
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);
948 return count;
949 }
950
951 /* only Vcore A/B and Vtt have additional 2 bits precision */
952 static ssize_t
953 show_in(struct device *dev, struct device_attribute *attr, char *buf)
954 {
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];
961
962 if (index < 3) {
963 val <<= 2;
964 val += (data->in_low_bits[nr] >> (index * 2)) & 0x3;
965 }
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);
969 }
970
971 static ssize_t
972 store_in(struct device *dev, struct device_attribute *attr,
973 const char *buf, size_t count)
974 {
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);
981 unsigned long val;
982 int err;
983
984 err = kstrtoul(buf, 10, &val);
985 if (err)
986 return err;
987 val = (val + scale_in[index] / 2) / scale_in[index];
988
989 mutex_lock(&data->update_lock);
990 if (index > 2) {
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);
995 } else {
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]);
1003 val >>= 2;
1004 }
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);
1009 return count;
1010 }
1011
1012 #define NOT_USED -1
1013
1014 #define SENSOR_ATTR_IN(index) \
1015 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \
1016 IN_READ, index), \
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))
1026
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)
1036
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)
1046
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, \
1069 index - 1), \
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)
1102
1103 static struct sensor_device_attribute_2 w83793_sensor_attr_2[] = {
1104 SENSOR_ATTR_IN(0),
1105 SENSOR_ATTR_IN(1),
1106 SENSOR_ATTR_IN(2),
1107 SENSOR_ATTR_IN(3),
1108 SENSOR_ATTR_IN(4),
1109 SENSOR_ATTR_IN(5),
1110 SENSOR_ATTR_IN(6),
1111 SENSOR_ATTR_IN(7),
1112 SENSOR_ATTR_IN(8),
1113 SENSOR_ATTR_IN(9),
1114 SENSOR_ATTR_FAN(1),
1115 SENSOR_ATTR_FAN(2),
1116 SENSOR_ATTR_FAN(3),
1117 SENSOR_ATTR_FAN(4),
1118 SENSOR_ATTR_FAN(5),
1119 SENSOR_ATTR_PWM(1),
1120 SENSOR_ATTR_PWM(2),
1121 SENSOR_ATTR_PWM(3),
1122 };
1123
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),
1131 };
1132
1133 /* Fan6-Fan12 */
1134 static struct sensor_device_attribute_2 w83793_left_fan[] = {
1135 SENSOR_ATTR_FAN(6),
1136 SENSOR_ATTR_FAN(7),
1137 SENSOR_ATTR_FAN(8),
1138 SENSOR_ATTR_FAN(9),
1139 SENSOR_ATTR_FAN(10),
1140 SENSOR_ATTR_FAN(11),
1141 SENSOR_ATTR_FAN(12),
1142 };
1143
1144 /* Pwm4-Pwm8 */
1145 static struct sensor_device_attribute_2 w83793_left_pwm[] = {
1146 SENSOR_ATTR_PWM(4),
1147 SENSOR_ATTR_PWM(5),
1148 SENSOR_ATTR_PWM(6),
1149 SENSOR_ATTR_PWM(7),
1150 SENSOR_ATTR_PWM(8),
1151 };
1152
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),
1156 };
1157 static DEVICE_ATTR_RW(vrm);
1158
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),
1172 };
1173
1174 static void w83793_init_client(struct i2c_client *client)
1175 {
1176 if (reset)
1177 w83793_write_value(client, W83793_REG_CONFIG, 0x80);
1178
1179 /* Start monitoring */
1180 w83793_write_value(client, W83793_REG_CONFIG,
1181 w83793_read_value(client, W83793_REG_CONFIG) | 0x01);
1182 }
1183
1184 /*
1185 * Watchdog routines
1186 */
1187
1188 static int watchdog_set_timeout(struct w83793_data *data, int timeout)
1189 {
1190 unsigned int mtimeout;
1191 int ret;
1192
1193 mtimeout = DIV_ROUND_UP(timeout, 60);
1194
1195 if (mtimeout > 255)
1196 return -EINVAL;
1197
1198 mutex_lock(&data->watchdog_lock);
1199 if (!data->client) {
1200 ret = -ENODEV;
1201 goto leave;
1202 }
1203
1204 data->watchdog_timeout = mtimeout;
1205
1206 /* Set Timeout value (in Minutes) */
1207 w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT,
1208 data->watchdog_timeout);
1209
1210 ret = mtimeout * 60;
1211
1212 leave:
1213 mutex_unlock(&data->watchdog_lock);
1214 return ret;
1215 }
1216
1217 static int watchdog_get_timeout(struct w83793_data *data)
1218 {
1219 int timeout;
1220
1221 mutex_lock(&data->watchdog_lock);
1222 timeout = data->watchdog_timeout * 60;
1223 mutex_unlock(&data->watchdog_lock);
1224
1225 return timeout;
1226 }
1227
1228 static int watchdog_trigger(struct w83793_data *data)
1229 {
1230 int ret = 0;
1231
1232 mutex_lock(&data->watchdog_lock);
1233 if (!data->client) {
1234 ret = -ENODEV;
1235 goto leave;
1236 }
1237
1238 /* Set Timeout value (in Minutes) */
1239 w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT,
1240 data->watchdog_timeout);
1241
1242 leave:
1243 mutex_unlock(&data->watchdog_lock);
1244 return ret;
1245 }
1246
1247 static int watchdog_enable(struct w83793_data *data)
1248 {
1249 int ret = 0;
1250
1251 mutex_lock(&data->watchdog_lock);
1252 if (!data->client) {
1253 ret = -ENODEV;
1254 goto leave;
1255 }
1256
1257 /* Set initial timeout */
1258 w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT,
1259 data->watchdog_timeout);
1260
1261 /* Enable Soft Watchdog */
1262 w83793_write_value(data->client, W83793_REG_WDT_LOCK, 0x55);
1263
1264 leave:
1265 mutex_unlock(&data->watchdog_lock);
1266 return ret;
1267 }
1268
1269 static int watchdog_disable(struct w83793_data *data)
1270 {
1271 int ret = 0;
1272
1273 mutex_lock(&data->watchdog_lock);
1274 if (!data->client) {
1275 ret = -ENODEV;
1276 goto leave;
1277 }
1278
1279 /* Disable Soft Watchdog */
1280 w83793_write_value(data->client, W83793_REG_WDT_LOCK, 0xAA);
1281
1282 leave:
1283 mutex_unlock(&data->watchdog_lock);
1284 return ret;
1285 }
1286
1287 static int watchdog_open(struct inode *inode, struct file *filp)
1288 {
1289 struct w83793_data *pos, *data = NULL;
1290 int watchdog_is_open;
1291
1292 /*
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.
1297 */
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)) {
1302 data = pos;
1303 break;
1304 }
1305 }
1306
1307 /* Check, if device is already open */
1308 watchdog_is_open = test_and_set_bit(0, &data->watchdog_is_open);
1309
1310 /*
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
1313 */
1314 if (!watchdog_is_open)
1315 kref_get(&data->kref);
1316
1317 mutex_unlock(&watchdog_data_mutex);
1318
1319 /* Check, if device is already open and possibly issue error */
1320 if (watchdog_is_open)
1321 return -EBUSY;
1322
1323 /* Enable Soft Watchdog */
1324 watchdog_enable(data);
1325
1326 /* Store pointer to data into filp's private data */
1327 filp->private_data = data;
1328
1329 return stream_open(inode, filp);
1330 }
1331
1332 static int watchdog_close(struct inode *inode, struct file *filp)
1333 {
1334 struct w83793_data *data = filp->private_data;
1335
1336 if (data->watchdog_expect_close) {
1337 watchdog_disable(data);
1338 data->watchdog_expect_close = 0;
1339 } else {
1340 watchdog_trigger(data);
1341 dev_crit(&data->client->dev,
1342 "unexpected close, not stopping watchdog!\n");
1343 }
1344
1345 clear_bit(0, &data->watchdog_is_open);
1346
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);
1351
1352 return 0;
1353 }
1354
1355 static ssize_t watchdog_write(struct file *filp, const char __user *buf,
1356 size_t count, loff_t *offset)
1357 {
1358 ssize_t ret;
1359 struct w83793_data *data = filp->private_data;
1360
1361 if (count) {
1362 if (!nowayout) {
1363 size_t i;
1364
1365 /* Clear it in case it was set with a previous write */
1366 data->watchdog_expect_close = 0;
1367
1368 for (i = 0; i != count; i++) {
1369 char c;
1370 if (get_user(c, buf + i))
1371 return -EFAULT;
1372 if (c == 'V')
1373 data->watchdog_expect_close = 1;
1374 }
1375 }
1376 ret = watchdog_trigger(data);
1377 if (ret < 0)
1378 return ret;
1379 }
1380 return count;
1381 }
1382
1383 static long watchdog_ioctl(struct file *filp, unsigned int cmd,
1384 unsigned long arg)
1385 {
1386 struct watchdog_info ident = {
1387 .options = WDIOF_KEEPALIVEPING |
1388 WDIOF_SETTIMEOUT |
1389 WDIOF_CARDRESET,
1390 .identity = "w83793 watchdog"
1391 };
1392
1393 int val, ret = 0;
1394 struct w83793_data *data = filp->private_data;
1395
1396 switch (cmd) {
1397 case WDIOC_GETSUPPORT:
1398 if (!nowayout)
1399 ident.options |= WDIOF_MAGICCLOSE;
1400 if (copy_to_user((void __user *)arg, &ident, sizeof(ident)))
1401 ret = -EFAULT;
1402 break;
1403
1404 case WDIOC_GETSTATUS:
1405 val = data->watchdog_caused_reboot ? WDIOF_CARDRESET : 0;
1406 ret = put_user(val, (int __user *)arg);
1407 break;
1408
1409 case WDIOC_GETBOOTSTATUS:
1410 ret = put_user(0, (int __user *)arg);
1411 break;
1412
1413 case WDIOC_KEEPALIVE:
1414 ret = watchdog_trigger(data);
1415 break;
1416
1417 case WDIOC_GETTIMEOUT:
1418 val = watchdog_get_timeout(data);
1419 ret = put_user(val, (int __user *)arg);
1420 break;
1421
1422 case WDIOC_SETTIMEOUT:
1423 if (get_user(val, (int __user *)arg)) {
1424 ret = -EFAULT;
1425 break;
1426 }
1427 ret = watchdog_set_timeout(data, val);
1428 if (ret > 0)
1429 ret = put_user(ret, (int __user *)arg);
1430 break;
1431
1432 case WDIOC_SETOPTIONS:
1433 if (get_user(val, (int __user *)arg)) {
1434 ret = -EFAULT;
1435 break;
1436 }
1437
1438 if (val & WDIOS_DISABLECARD)
1439 ret = watchdog_disable(data);
1440 else if (val & WDIOS_ENABLECARD)
1441 ret = watchdog_enable(data);
1442 else
1443 ret = -EINVAL;
1444
1445 break;
1446 default:
1447 ret = -ENOTTY;
1448 }
1449 return ret;
1450 }
1451
1452 static const struct file_operations watchdog_fops = {
1453 .owner = THIS_MODULE,
1454 .open = watchdog_open,
1455 .release = watchdog_close,
1456 .write = watchdog_write,
1457 .unlocked_ioctl = watchdog_ioctl,
1458 .compat_ioctl = compat_ptr_ioctl,
1459 };
1460
1461 /*
1462 * Notifier for system down
1463 */
1464
1465 static int watchdog_notify_sys(struct notifier_block *this, unsigned long code,
1466 void *unused)
1467 {
1468 struct w83793_data *data = NULL;
1469
1470 if (code == SYS_DOWN || code == SYS_HALT) {
1471
1472 /* Disable each registered watchdog */
1473 mutex_lock(&watchdog_data_mutex);
1474 list_for_each_entry(data, &watchdog_data_list, list) {
1475 if (data->watchdog_miscdev.minor)
1476 watchdog_disable(data);
1477 }
1478 mutex_unlock(&watchdog_data_mutex);
1479 }
1480
1481 return NOTIFY_DONE;
1482 }
1483
1484 /*
1485 * The WDT needs to learn about soft shutdowns in order to
1486 * turn the timebomb registers off.
1487 */
1488
1489 static struct notifier_block watchdog_notifier = {
1490 .notifier_call = watchdog_notify_sys,
1491 };
1492
1493 /*
1494 * Init / remove routines
1495 */
1496
1497 static void w83793_remove(struct i2c_client *client)
1498 {
1499 struct w83793_data *data = i2c_get_clientdata(client);
1500 struct device *dev = &client->dev;
1501 int i, tmp;
1502
1503 /* Unregister the watchdog (if registered) */
1504 if (data->watchdog_miscdev.minor) {
1505 misc_deregister(&data->watchdog_miscdev);
1506
1507 if (data->watchdog_is_open) {
1508 dev_warn(&client->dev,
1509 "i2c client detached with watchdog open! "
1510 "Stopping watchdog.\n");
1511 watchdog_disable(data);
1512 }
1513
1514 mutex_lock(&watchdog_data_mutex);
1515 list_del(&data->list);
1516 mutex_unlock(&watchdog_data_mutex);
1517
1518 /* Tell the watchdog code the client is gone */
1519 mutex_lock(&data->watchdog_lock);
1520 data->client = NULL;
1521 mutex_unlock(&data->watchdog_lock);
1522 }
1523
1524 /* Reset Configuration Register to Disable Watch Dog Registers */
1525 tmp = w83793_read_value(client, W83793_REG_CONFIG);
1526 w83793_write_value(client, W83793_REG_CONFIG, tmp & ~0x04);
1527
1528 unregister_reboot_notifier(&watchdog_notifier);
1529
1530 hwmon_device_unregister(data->hwmon_dev);
1531
1532 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++)
1533 device_remove_file(dev,
1534 &w83793_sensor_attr_2[i].dev_attr);
1535
1536 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
1537 device_remove_file(dev, &sda_single_files[i].dev_attr);
1538
1539 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++)
1540 device_remove_file(dev, &w83793_vid[i].dev_attr);
1541 device_remove_file(dev, &dev_attr_vrm);
1542
1543 for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++)
1544 device_remove_file(dev, &w83793_left_fan[i].dev_attr);
1545
1546 for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++)
1547 device_remove_file(dev, &w83793_left_pwm[i].dev_attr);
1548
1549 for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
1550 device_remove_file(dev, &w83793_temp[i].dev_attr);
1551
1552 /* Decrease data reference counter */
1553 mutex_lock(&watchdog_data_mutex);
1554 kref_put(&data->kref, w83793_release_resources);
1555 mutex_unlock(&watchdog_data_mutex);
1556 }
1557
1558 static int
1559 w83793_detect_subclients(struct i2c_client *client)
1560 {
1561 int i, id;
1562 int address = client->addr;
1563 u8 tmp;
1564 struct i2c_adapter *adapter = client->adapter;
1565
1566 id = i2c_adapter_id(adapter);
1567 if (force_subclients[0] == id && force_subclients[1] == address) {
1568 for (i = 2; i <= 3; i++) {
1569 if (force_subclients[i] < 0x48
1570 || force_subclients[i] > 0x4f) {
1571 dev_err(&client->dev,
1572 "invalid subclient "
1573 "address %d; must be 0x48-0x4f\n",
1574 force_subclients[i]);
1575 return -EINVAL;
1576 }
1577 }
1578 w83793_write_value(client, W83793_REG_I2C_SUBADDR,
1579 (force_subclients[2] & 0x07) |
1580 ((force_subclients[3] & 0x07) << 4));
1581 }
1582
1583 tmp = w83793_read_value(client, W83793_REG_I2C_SUBADDR);
1584
1585 if (!(tmp & 0x88) && (tmp & 0x7) == ((tmp >> 4) & 0x7)) {
1586 dev_err(&client->dev,
1587 "duplicate addresses 0x%x, use force_subclient\n", 0x48 + (tmp & 0x7));
1588 return -ENODEV;
1589 }
1590
1591 if (!(tmp & 0x08))
1592 devm_i2c_new_dummy_device(&client->dev, adapter, 0x48 + (tmp & 0x7));
1593
1594 if (!(tmp & 0x80))
1595 devm_i2c_new_dummy_device(&client->dev, adapter, 0x48 + ((tmp >> 4) & 0x7));
1596
1597 return 0;
1598 }
1599
1600 /* Return 0 if detection is successful, -ENODEV otherwise */
1601 static int w83793_detect(struct i2c_client *client,
1602 struct i2c_board_info *info)
1603 {
1604 u8 tmp, bank, chip_id;
1605 struct i2c_adapter *adapter = client->adapter;
1606 unsigned short address = client->addr;
1607
1608 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1609 return -ENODEV;
1610
1611 bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL);
1612
1613 tmp = bank & 0x80 ? 0x5c : 0xa3;
1614 /* Check Winbond vendor ID */
1615 if (tmp != i2c_smbus_read_byte_data(client, W83793_REG_VENDORID)) {
1616 pr_debug("w83793: Detection failed at check vendor id\n");
1617 return -ENODEV;
1618 }
1619
1620 /*
1621 * If Winbond chip, address of chip and W83793_REG_I2C_ADDR
1622 * should match
1623 */
1624 if ((bank & 0x07) == 0
1625 && i2c_smbus_read_byte_data(client, W83793_REG_I2C_ADDR) !=
1626 (address << 1)) {
1627 pr_debug("w83793: Detection failed at check i2c addr\n");
1628 return -ENODEV;
1629 }
1630
1631 /* Determine the chip type now */
1632 chip_id = i2c_smbus_read_byte_data(client, W83793_REG_CHIPID);
1633 if (chip_id != 0x7b)
1634 return -ENODEV;
1635
1636 strscpy(info->type, "w83793", I2C_NAME_SIZE);
1637
1638 return 0;
1639 }
1640
1641 static int w83793_probe(struct i2c_client *client)
1642 {
1643 struct device *dev = &client->dev;
1644 static const int watchdog_minors[] = {
1645 WATCHDOG_MINOR, 212, 213, 214, 215
1646 };
1647 struct w83793_data *data;
1648 int i, tmp, val, err;
1649 int files_fan = ARRAY_SIZE(w83793_left_fan) / 7;
1650 int files_pwm = ARRAY_SIZE(w83793_left_pwm) / 5;
1651 int files_temp = ARRAY_SIZE(w83793_temp) / 6;
1652
1653 data = kzalloc(sizeof(struct w83793_data), GFP_KERNEL);
1654 if (!data) {
1655 err = -ENOMEM;
1656 goto exit;
1657 }
1658
1659 i2c_set_clientdata(client, data);
1660 data->bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL);
1661 mutex_init(&data->update_lock);
1662 mutex_init(&data->watchdog_lock);
1663 INIT_LIST_HEAD(&data->list);
1664 kref_init(&data->kref);
1665
1666 /*
1667 * Store client pointer in our data struct for watchdog usage
1668 * (where the client is found through a data ptr instead of the
1669 * otherway around)
1670 */
1671 data->client = client;
1672
1673 err = w83793_detect_subclients(client);
1674 if (err)
1675 goto free_mem;
1676
1677 /* Initialize the chip */
1678 w83793_init_client(client);
1679
1680 /*
1681 * Only fan 1-5 has their own input pins,
1682 * Pwm 1-3 has their own pins
1683 */
1684 data->has_fan = 0x1f;
1685 data->has_pwm = 0x07;
1686 tmp = w83793_read_value(client, W83793_REG_MFC);
1687 val = w83793_read_value(client, W83793_REG_FANIN_CTRL);
1688
1689 /* check the function of pins 49-56 */
1690 if (tmp & 0x80) {
1691 data->has_vid |= 0x2; /* has VIDB */
1692 } else {
1693 data->has_pwm |= 0x18; /* pwm 4,5 */
1694 if (val & 0x01) { /* fan 6 */
1695 data->has_fan |= 0x20;
1696 data->has_pwm |= 0x20;
1697 }
1698 if (val & 0x02) { /* fan 7 */
1699 data->has_fan |= 0x40;
1700 data->has_pwm |= 0x40;
1701 }
1702 if (!(tmp & 0x40) && (val & 0x04)) { /* fan 8 */
1703 data->has_fan |= 0x80;
1704 data->has_pwm |= 0x80;
1705 }
1706 }
1707
1708 /* check the function of pins 37-40 */
1709 if (!(tmp & 0x29))
1710 data->has_vid |= 0x1; /* has VIDA */
1711 if (0x08 == (tmp & 0x0c)) {
1712 if (val & 0x08) /* fan 9 */
1713 data->has_fan |= 0x100;
1714 if (val & 0x10) /* fan 10 */
1715 data->has_fan |= 0x200;
1716 }
1717 if (0x20 == (tmp & 0x30)) {
1718 if (val & 0x20) /* fan 11 */
1719 data->has_fan |= 0x400;
1720 if (val & 0x40) /* fan 12 */
1721 data->has_fan |= 0x800;
1722 }
1723
1724 if ((tmp & 0x01) && (val & 0x04)) { /* fan 8, second location */
1725 data->has_fan |= 0x80;
1726 data->has_pwm |= 0x80;
1727 }
1728
1729 tmp = w83793_read_value(client, W83793_REG_FANIN_SEL);
1730 if ((tmp & 0x01) && (val & 0x08)) { /* fan 9, second location */
1731 data->has_fan |= 0x100;
1732 }
1733 if ((tmp & 0x02) && (val & 0x10)) { /* fan 10, second location */
1734 data->has_fan |= 0x200;
1735 }
1736 if ((tmp & 0x04) && (val & 0x20)) { /* fan 11, second location */
1737 data->has_fan |= 0x400;
1738 }
1739 if ((tmp & 0x08) && (val & 0x40)) { /* fan 12, second location */
1740 data->has_fan |= 0x800;
1741 }
1742
1743 /* check the temp1-6 mode, ignore former AMDSI selected inputs */
1744 tmp = w83793_read_value(client, W83793_REG_TEMP_MODE[0]);
1745 if (tmp & 0x01)
1746 data->has_temp |= 0x01;
1747 if (tmp & 0x04)
1748 data->has_temp |= 0x02;
1749 if (tmp & 0x10)
1750 data->has_temp |= 0x04;
1751 if (tmp & 0x40)
1752 data->has_temp |= 0x08;
1753
1754 tmp = w83793_read_value(client, W83793_REG_TEMP_MODE[1]);
1755 if (tmp & 0x01)
1756 data->has_temp |= 0x10;
1757 if (tmp & 0x02)
1758 data->has_temp |= 0x20;
1759
1760 /* Register sysfs hooks */
1761 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) {
1762 err = device_create_file(dev,
1763 &w83793_sensor_attr_2[i].dev_attr);
1764 if (err)
1765 goto exit_remove;
1766 }
1767
1768 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) {
1769 if (!(data->has_vid & (1 << i)))
1770 continue;
1771 err = device_create_file(dev, &w83793_vid[i].dev_attr);
1772 if (err)
1773 goto exit_remove;
1774 }
1775 if (data->has_vid) {
1776 data->vrm = vid_which_vrm();
1777 err = device_create_file(dev, &dev_attr_vrm);
1778 if (err)
1779 goto exit_remove;
1780 }
1781
1782 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1783 err = device_create_file(dev, &sda_single_files[i].dev_attr);
1784 if (err)
1785 goto exit_remove;
1786
1787 }
1788
1789 for (i = 0; i < 6; i++) {
1790 int j;
1791 if (!(data->has_temp & (1 << i)))
1792 continue;
1793 for (j = 0; j < files_temp; j++) {
1794 err = device_create_file(dev,
1795 &w83793_temp[(i) * files_temp
1796 + j].dev_attr);
1797 if (err)
1798 goto exit_remove;
1799 }
1800 }
1801
1802 for (i = 5; i < 12; i++) {
1803 int j;
1804 if (!(data->has_fan & (1 << i)))
1805 continue;
1806 for (j = 0; j < files_fan; j++) {
1807 err = device_create_file(dev,
1808 &w83793_left_fan[(i - 5) * files_fan
1809 + j].dev_attr);
1810 if (err)
1811 goto exit_remove;
1812 }
1813 }
1814
1815 for (i = 3; i < 8; i++) {
1816 int j;
1817 if (!(data->has_pwm & (1 << i)))
1818 continue;
1819 for (j = 0; j < files_pwm; j++) {
1820 err = device_create_file(dev,
1821 &w83793_left_pwm[(i - 3) * files_pwm
1822 + j].dev_attr);
1823 if (err)
1824 goto exit_remove;
1825 }
1826 }
1827
1828 data->hwmon_dev = hwmon_device_register(dev);
1829 if (IS_ERR(data->hwmon_dev)) {
1830 err = PTR_ERR(data->hwmon_dev);
1831 goto exit_remove;
1832 }
1833
1834 /* Watchdog initialization */
1835
1836 /* Register boot notifier */
1837 err = register_reboot_notifier(&watchdog_notifier);
1838 if (err != 0) {
1839 dev_err(&client->dev,
1840 "cannot register reboot notifier (err=%d)\n", err);
1841 goto exit_devunreg;
1842 }
1843
1844 /*
1845 * Enable Watchdog registers.
1846 * Set Configuration Register to Enable Watch Dog Registers
1847 * (Bit 2) = XXXX, X1XX.
1848 */
1849 tmp = w83793_read_value(client, W83793_REG_CONFIG);
1850 w83793_write_value(client, W83793_REG_CONFIG, tmp | 0x04);
1851
1852 /* Set the default watchdog timeout */
1853 data->watchdog_timeout = timeout;
1854
1855 /* Check, if last reboot was caused by watchdog */
1856 data->watchdog_caused_reboot =
1857 w83793_read_value(data->client, W83793_REG_WDT_STATUS) & 0x01;
1858
1859 /* Disable Soft Watchdog during initialiation */
1860 watchdog_disable(data);
1861
1862 /*
1863 * We take the data_mutex lock early so that watchdog_open() cannot
1864 * run when misc_register() has completed, but we've not yet added
1865 * our data to the watchdog_data_list (and set the default timeout)
1866 */
1867 mutex_lock(&watchdog_data_mutex);
1868 for (i = 0; i < ARRAY_SIZE(watchdog_minors); i++) {
1869 /* Register our watchdog part */
1870 snprintf(data->watchdog_name, sizeof(data->watchdog_name),
1871 "watchdog%c", (i == 0) ? '\0' : ('0' + i));
1872 data->watchdog_miscdev.name = data->watchdog_name;
1873 data->watchdog_miscdev.fops = &watchdog_fops;
1874 data->watchdog_miscdev.minor = watchdog_minors[i];
1875
1876 err = misc_register(&data->watchdog_miscdev);
1877 if (err == -EBUSY)
1878 continue;
1879 if (err) {
1880 data->watchdog_miscdev.minor = 0;
1881 dev_err(&client->dev,
1882 "Registering watchdog chardev: %d\n", err);
1883 break;
1884 }
1885
1886 list_add(&data->list, &watchdog_data_list);
1887
1888 dev_info(&client->dev,
1889 "Registered watchdog chardev major 10, minor: %d\n",
1890 watchdog_minors[i]);
1891 break;
1892 }
1893 if (i == ARRAY_SIZE(watchdog_minors)) {
1894 data->watchdog_miscdev.minor = 0;
1895 dev_warn(&client->dev,
1896 "Couldn't register watchdog chardev (due to no free minor)\n");
1897 }
1898
1899 mutex_unlock(&watchdog_data_mutex);
1900
1901 return 0;
1902
1903 /* Unregister hwmon device */
1904
1905 exit_devunreg:
1906
1907 hwmon_device_unregister(data->hwmon_dev);
1908
1909 /* Unregister sysfs hooks */
1910
1911 exit_remove:
1912 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++)
1913 device_remove_file(dev, &w83793_sensor_attr_2[i].dev_attr);
1914
1915 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
1916 device_remove_file(dev, &sda_single_files[i].dev_attr);
1917
1918 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++)
1919 device_remove_file(dev, &w83793_vid[i].dev_attr);
1920
1921 for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++)
1922 device_remove_file(dev, &w83793_left_fan[i].dev_attr);
1923
1924 for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++)
1925 device_remove_file(dev, &w83793_left_pwm[i].dev_attr);
1926
1927 for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
1928 device_remove_file(dev, &w83793_temp[i].dev_attr);
1929 free_mem:
1930 kfree(data);
1931 exit:
1932 return err;
1933 }
1934
1935 static void w83793_update_nonvolatile(struct device *dev)
1936 {
1937 struct i2c_client *client = to_i2c_client(dev);
1938 struct w83793_data *data = i2c_get_clientdata(client);
1939 int i, j;
1940 /*
1941 * They are somewhat "stable" registers, and to update them every time
1942 * takes so much time, it's just not worthy. Update them in a long
1943 * interval to avoid exception.
1944 */
1945 if (!(time_after(jiffies, data->last_nonvolatile + HZ * 300)
1946 || !data->valid))
1947 return;
1948 /* update voltage limits */
1949 for (i = 1; i < 3; i++) {
1950 for (j = 0; j < ARRAY_SIZE(data->in); j++) {
1951 data->in[j][i] =
1952 w83793_read_value(client, W83793_REG_IN[j][i]);
1953 }
1954 data->in_low_bits[i] =
1955 w83793_read_value(client, W83793_REG_IN_LOW_BITS[i]);
1956 }
1957
1958 for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
1959 /* Update the Fan measured value and limits */
1960 if (!(data->has_fan & (1 << i)))
1961 continue;
1962 data->fan_min[i] =
1963 w83793_read_value(client, W83793_REG_FAN_MIN(i)) << 8;
1964 data->fan_min[i] |=
1965 w83793_read_value(client, W83793_REG_FAN_MIN(i) + 1);
1966 }
1967
1968 for (i = 0; i < ARRAY_SIZE(data->temp_fan_map); i++) {
1969 if (!(data->has_temp & (1 << i)))
1970 continue;
1971 data->temp_fan_map[i] =
1972 w83793_read_value(client, W83793_REG_TEMP_FAN_MAP(i));
1973 for (j = 1; j < 5; j++) {
1974 data->temp[i][j] =
1975 w83793_read_value(client, W83793_REG_TEMP[i][j]);
1976 }
1977 data->temp_cruise[i] =
1978 w83793_read_value(client, W83793_REG_TEMP_CRUISE(i));
1979 for (j = 0; j < 7; j++) {
1980 data->sf2_pwm[i][j] =
1981 w83793_read_value(client, W83793_REG_SF2_PWM(i, j));
1982 data->sf2_temp[i][j] =
1983 w83793_read_value(client,
1984 W83793_REG_SF2_TEMP(i, j));
1985 }
1986 }
1987
1988 for (i = 0; i < ARRAY_SIZE(data->temp_mode); i++)
1989 data->temp_mode[i] =
1990 w83793_read_value(client, W83793_REG_TEMP_MODE[i]);
1991
1992 for (i = 0; i < ARRAY_SIZE(data->tolerance); i++) {
1993 data->tolerance[i] =
1994 w83793_read_value(client, W83793_REG_TEMP_TOL(i));
1995 }
1996
1997 for (i = 0; i < ARRAY_SIZE(data->pwm); i++) {
1998 if (!(data->has_pwm & (1 << i)))
1999 continue;
2000 data->pwm[i][PWM_NONSTOP] =
2001 w83793_read_value(client, W83793_REG_PWM(i, PWM_NONSTOP));
2002 data->pwm[i][PWM_START] =
2003 w83793_read_value(client, W83793_REG_PWM(i, PWM_START));
2004 data->pwm_stop_time[i] =
2005 w83793_read_value(client, W83793_REG_PWM_STOP_TIME(i));
2006 }
2007
2008 data->pwm_default = w83793_read_value(client, W83793_REG_PWM_DEFAULT);
2009 data->pwm_enable = w83793_read_value(client, W83793_REG_PWM_ENABLE);
2010 data->pwm_uptime = w83793_read_value(client, W83793_REG_PWM_UPTIME);
2011 data->pwm_downtime = w83793_read_value(client, W83793_REG_PWM_DOWNTIME);
2012 data->temp_critical =
2013 w83793_read_value(client, W83793_REG_TEMP_CRITICAL);
2014 data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP);
2015
2016 for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
2017 data->beeps[i] = w83793_read_value(client, W83793_REG_BEEP(i));
2018
2019 data->last_nonvolatile = jiffies;
2020 }
2021
2022 static struct w83793_data *w83793_update_device(struct device *dev)
2023 {
2024 struct i2c_client *client = to_i2c_client(dev);
2025 struct w83793_data *data = i2c_get_clientdata(client);
2026 int i;
2027
2028 mutex_lock(&data->update_lock);
2029
2030 if (!(time_after(jiffies, data->last_updated + HZ * 2)
2031 || !data->valid))
2032 goto END;
2033
2034 /* Update the voltages measured value and limits */
2035 for (i = 0; i < ARRAY_SIZE(data->in); i++)
2036 data->in[i][IN_READ] =
2037 w83793_read_value(client, W83793_REG_IN[i][IN_READ]);
2038
2039 data->in_low_bits[IN_READ] =
2040 w83793_read_value(client, W83793_REG_IN_LOW_BITS[IN_READ]);
2041
2042 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
2043 if (!(data->has_fan & (1 << i)))
2044 continue;
2045 data->fan[i] =
2046 w83793_read_value(client, W83793_REG_FAN(i)) << 8;
2047 data->fan[i] |=
2048 w83793_read_value(client, W83793_REG_FAN(i) + 1);
2049 }
2050
2051 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
2052 if (!(data->has_temp & (1 << i)))
2053 continue;
2054 data->temp[i][TEMP_READ] =
2055 w83793_read_value(client, W83793_REG_TEMP[i][TEMP_READ]);
2056 }
2057
2058 data->temp_low_bits =
2059 w83793_read_value(client, W83793_REG_TEMP_LOW_BITS);
2060
2061 for (i = 0; i < ARRAY_SIZE(data->pwm); i++) {
2062 if (data->has_pwm & (1 << i))
2063 data->pwm[i][PWM_DUTY] =
2064 w83793_read_value(client,
2065 W83793_REG_PWM(i, PWM_DUTY));
2066 }
2067
2068 for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
2069 data->alarms[i] =
2070 w83793_read_value(client, W83793_REG_ALARM(i));
2071 if (data->has_vid & 0x01)
2072 data->vid[0] = w83793_read_value(client, W83793_REG_VID_INA);
2073 if (data->has_vid & 0x02)
2074 data->vid[1] = w83793_read_value(client, W83793_REG_VID_INB);
2075 w83793_update_nonvolatile(dev);
2076 data->last_updated = jiffies;
2077 data->valid = true;
2078
2079 END:
2080 mutex_unlock(&data->update_lock);
2081 return data;
2082 }
2083
2084 /*
2085 * Ignore the possibility that somebody change bank outside the driver
2086 * Must be called with data->update_lock held, except during initialization
2087 */
2088 static u8 w83793_read_value(struct i2c_client *client, u16 reg)
2089 {
2090 struct w83793_data *data = i2c_get_clientdata(client);
2091 u8 res;
2092 u8 new_bank = reg >> 8;
2093
2094 new_bank |= data->bank & 0xfc;
2095 if (data->bank != new_bank) {
2096 if (i2c_smbus_write_byte_data
2097 (client, W83793_REG_BANKSEL, new_bank) >= 0)
2098 data->bank = new_bank;
2099 else {
2100 dev_err(&client->dev,
2101 "set bank to %d failed, fall back "
2102 "to bank %d, read reg 0x%x error\n",
2103 new_bank, data->bank, reg);
2104 res = 0x0; /* read 0x0 from the chip */
2105 goto END;
2106 }
2107 }
2108 res = i2c_smbus_read_byte_data(client, reg & 0xff);
2109 END:
2110 return res;
2111 }
2112
2113 /* Must be called with data->update_lock held, except during initialization */
2114 static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value)
2115 {
2116 struct w83793_data *data = i2c_get_clientdata(client);
2117 int res;
2118 u8 new_bank = reg >> 8;
2119
2120 new_bank |= data->bank & 0xfc;
2121 if (data->bank != new_bank) {
2122 res = i2c_smbus_write_byte_data(client, W83793_REG_BANKSEL,
2123 new_bank);
2124 if (res < 0) {
2125 dev_err(&client->dev,
2126 "set bank to %d failed, fall back "
2127 "to bank %d, write reg 0x%x error\n",
2128 new_bank, data->bank, reg);
2129 goto END;
2130 }
2131 data->bank = new_bank;
2132 }
2133
2134 res = i2c_smbus_write_byte_data(client, reg & 0xff, value);
2135 END:
2136 return res;
2137 }
2138
2139 module_i2c_driver(w83793_driver);
2140
2141 MODULE_AUTHOR("Yuan Mu, Sven Anders");
2142 MODULE_DESCRIPTION("w83793 driver");
2143 MODULE_LICENSE("GPL");
Kernel DRM miscellaneous fixes and cross-tree changes