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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[mirror_ubuntu-artful-kernel.git] / drivers / hwmon / w83793.c
1 /*
2 w83793.c - Linux kernel driver for hardware monitoring
3 Copyright (C) 2006 Winbond Electronics Corp.
4 Yuan Mu
5 Rudolf Marek <r.marek@assembler.cz>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation - version 2.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 02110-1301 USA.
20 */
21
22 /*
23 Supports following chips:
24
25 Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
26 w83793 10 12 8 6 0x7b 0x5ca3 yes no
27 */
28
29 #include <linux/module.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/i2c.h>
33 #include <linux/hwmon.h>
34 #include <linux/hwmon-vid.h>
35 #include <linux/hwmon-sysfs.h>
36 #include <linux/err.h>
37 #include <linux/mutex.h>
38
39 /* Addresses to scan */
40 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
41 I2C_CLIENT_END };
42
43 /* Insmod parameters */
44 I2C_CLIENT_INSMOD_1(w83793);
45
46 static unsigned short force_subclients[4];
47 module_param_array(force_subclients, short, NULL, 0);
48 MODULE_PARM_DESC(force_subclients, "List of subclient addresses: "
49 "{bus, clientaddr, subclientaddr1, subclientaddr2}");
50
51 static int reset;
52 module_param(reset, bool, 0);
53 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
54
55 /*
56 Address 0x00, 0x0d, 0x0e, 0x0f in all three banks are reserved
57 as ID, Bank Select registers
58 */
59 #define W83793_REG_BANKSEL 0x00
60 #define W83793_REG_VENDORID 0x0d
61 #define W83793_REG_CHIPID 0x0e
62 #define W83793_REG_DEVICEID 0x0f
63
64 #define W83793_REG_CONFIG 0x40
65 #define W83793_REG_MFC 0x58
66 #define W83793_REG_FANIN_CTRL 0x5c
67 #define W83793_REG_FANIN_SEL 0x5d
68 #define W83793_REG_I2C_ADDR 0x0b
69 #define W83793_REG_I2C_SUBADDR 0x0c
70 #define W83793_REG_VID_INA 0x05
71 #define W83793_REG_VID_INB 0x06
72 #define W83793_REG_VID_LATCHA 0x07
73 #define W83793_REG_VID_LATCHB 0x08
74 #define W83793_REG_VID_CTRL 0x59
75
76 static u16 W83793_REG_TEMP_MODE[2] = { 0x5e, 0x5f };
77
78 #define TEMP_READ 0
79 #define TEMP_CRIT 1
80 #define TEMP_CRIT_HYST 2
81 #define TEMP_WARN 3
82 #define TEMP_WARN_HYST 4
83 /* only crit and crit_hyst affect real-time alarm status
84 current crit crit_hyst warn warn_hyst */
85 static u16 W83793_REG_TEMP[][5] = {
86 {0x1c, 0x78, 0x79, 0x7a, 0x7b},
87 {0x1d, 0x7c, 0x7d, 0x7e, 0x7f},
88 {0x1e, 0x80, 0x81, 0x82, 0x83},
89 {0x1f, 0x84, 0x85, 0x86, 0x87},
90 {0x20, 0x88, 0x89, 0x8a, 0x8b},
91 {0x21, 0x8c, 0x8d, 0x8e, 0x8f},
92 };
93
94 #define W83793_REG_TEMP_LOW_BITS 0x22
95
96 #define W83793_REG_BEEP(index) (0x53 + (index))
97 #define W83793_REG_ALARM(index) (0x4b + (index))
98
99 #define W83793_REG_CLR_CHASSIS 0x4a /* SMI MASK4 */
100 #define W83793_REG_IRQ_CTRL 0x50
101 #define W83793_REG_OVT_CTRL 0x51
102 #define W83793_REG_OVT_BEEP 0x52
103
104 #define IN_READ 0
105 #define IN_MAX 1
106 #define IN_LOW 2
107 static const u16 W83793_REG_IN[][3] = {
108 /* Current, High, Low */
109 {0x10, 0x60, 0x61}, /* Vcore A */
110 {0x11, 0x62, 0x63}, /* Vcore B */
111 {0x12, 0x64, 0x65}, /* Vtt */
112 {0x14, 0x6a, 0x6b}, /* VSEN1 */
113 {0x15, 0x6c, 0x6d}, /* VSEN2 */
114 {0x16, 0x6e, 0x6f}, /* +3VSEN */
115 {0x17, 0x70, 0x71}, /* +12VSEN */
116 {0x18, 0x72, 0x73}, /* 5VDD */
117 {0x19, 0x74, 0x75}, /* 5VSB */
118 {0x1a, 0x76, 0x77}, /* VBAT */
119 };
120
121 /* Low Bits of Vcore A/B Vtt Read/High/Low */
122 static const u16 W83793_REG_IN_LOW_BITS[] = { 0x1b, 0x68, 0x69 };
123 static u8 scale_in[] = { 2, 2, 2, 16, 16, 16, 8, 24, 24, 16 };
124 static u8 scale_in_add[] = { 0, 0, 0, 0, 0, 0, 0, 150, 150, 0 };
125
126 #define W83793_REG_FAN(index) (0x23 + 2 * (index)) /* High byte */
127 #define W83793_REG_FAN_MIN(index) (0x90 + 2 * (index)) /* High byte */
128
129 #define W83793_REG_PWM_DEFAULT 0xb2
130 #define W83793_REG_PWM_ENABLE 0x207
131 #define W83793_REG_PWM_UPTIME 0xc3 /* Unit in 0.1 second */
132 #define W83793_REG_PWM_DOWNTIME 0xc4 /* Unit in 0.1 second */
133 #define W83793_REG_TEMP_CRITICAL 0xc5
134
135 #define PWM_DUTY 0
136 #define PWM_START 1
137 #define PWM_NONSTOP 2
138 #define PWM_STOP_TIME 3
139 #define W83793_REG_PWM(index, nr) (((nr) == 0 ? 0xb3 : \
140 (nr) == 1 ? 0x220 : 0x218) + (index))
141
142 /* bit field, fan1 is bit0, fan2 is bit1 ... */
143 #define W83793_REG_TEMP_FAN_MAP(index) (0x201 + (index))
144 #define W83793_REG_TEMP_TOL(index) (0x208 + (index))
145 #define W83793_REG_TEMP_CRUISE(index) (0x210 + (index))
146 #define W83793_REG_PWM_STOP_TIME(index) (0x228 + (index))
147 #define W83793_REG_SF2_TEMP(index, nr) (0x230 + ((index) << 4) + (nr))
148 #define W83793_REG_SF2_PWM(index, nr) (0x238 + ((index) << 4) + (nr))
149
150 static inline unsigned long FAN_FROM_REG(u16 val)
151 {
152 if ((val >= 0xfff) || (val == 0))
153 return 0;
154 return (1350000UL / val);
155 }
156
157 static inline u16 FAN_TO_REG(long rpm)
158 {
159 if (rpm <= 0)
160 return 0x0fff;
161 return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
162 }
163
164 static inline unsigned long TIME_FROM_REG(u8 reg)
165 {
166 return (reg * 100);
167 }
168
169 static inline u8 TIME_TO_REG(unsigned long val)
170 {
171 return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
172 }
173
174 static inline long TEMP_FROM_REG(s8 reg)
175 {
176 return (reg * 1000);
177 }
178
179 static inline s8 TEMP_TO_REG(long val, s8 min, s8 max)
180 {
181 return SENSORS_LIMIT((val + (val < 0 ? -500 : 500)) / 1000, min, max);
182 }
183
184 struct w83793_data {
185 struct i2c_client *lm75[2];
186 struct device *hwmon_dev;
187 struct mutex update_lock;
188 char valid; /* !=0 if following fields are valid */
189 unsigned long last_updated; /* In jiffies */
190 unsigned long last_nonvolatile; /* In jiffies, last time we update the
191 nonvolatile registers */
192
193 u8 bank;
194 u8 vrm;
195 u8 vid[2];
196 u8 in[10][3]; /* Register value, read/high/low */
197 u8 in_low_bits[3]; /* Additional resolution for VCore A/B Vtt */
198
199 u16 has_fan; /* Only fan1- fan5 has own pins */
200 u16 fan[12]; /* Register value combine */
201 u16 fan_min[12]; /* Register value combine */
202
203 s8 temp[6][5]; /* current, crit, crit_hyst,warn, warn_hyst */
204 u8 temp_low_bits; /* Additional resolution TD1-TD4 */
205 u8 temp_mode[2]; /* byte 0: Temp D1-D4 mode each has 2 bits
206 byte 1: Temp R1,R2 mode, each has 1 bit */
207 u8 temp_critical; /* If reached all fan will be at full speed */
208 u8 temp_fan_map[6]; /* Temp controls which pwm fan, bit field */
209
210 u8 has_pwm;
211 u8 has_temp;
212 u8 has_vid;
213 u8 pwm_enable; /* Register value, each Temp has 1 bit */
214 u8 pwm_uptime; /* Register value */
215 u8 pwm_downtime; /* Register value */
216 u8 pwm_default; /* All fan default pwm, next poweron valid */
217 u8 pwm[8][3]; /* Register value */
218 u8 pwm_stop_time[8];
219 u8 temp_cruise[6];
220
221 u8 alarms[5]; /* realtime status registers */
222 u8 beeps[5];
223 u8 beep_enable;
224 u8 tolerance[3]; /* Temp tolerance(Smart Fan I/II) */
225 u8 sf2_pwm[6][7]; /* Smart FanII: Fan duty cycle */
226 u8 sf2_temp[6][7]; /* Smart FanII: Temp level point */
227 };
228
229 static u8 w83793_read_value(struct i2c_client *client, u16 reg);
230 static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value);
231 static int w83793_probe(struct i2c_client *client,
232 const struct i2c_device_id *id);
233 static int w83793_detect(struct i2c_client *client, int kind,
234 struct i2c_board_info *info);
235 static int w83793_remove(struct i2c_client *client);
236 static void w83793_init_client(struct i2c_client *client);
237 static void w83793_update_nonvolatile(struct device *dev);
238 static struct w83793_data *w83793_update_device(struct device *dev);
239
240 static const struct i2c_device_id w83793_id[] = {
241 { "w83793", w83793 },
242 { }
243 };
244 MODULE_DEVICE_TABLE(i2c, w83793_id);
245
246 static struct i2c_driver w83793_driver = {
247 .class = I2C_CLASS_HWMON,
248 .driver = {
249 .name = "w83793",
250 },
251 .probe = w83793_probe,
252 .remove = w83793_remove,
253 .id_table = w83793_id,
254 .detect = w83793_detect,
255 .address_data = &addr_data,
256 };
257
258 static ssize_t
259 show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
260 {
261 struct w83793_data *data = dev_get_drvdata(dev);
262 return sprintf(buf, "%d\n", data->vrm);
263 }
264
265 static ssize_t
266 show_vid(struct device *dev, struct device_attribute *attr, char *buf)
267 {
268 struct w83793_data *data = w83793_update_device(dev);
269 struct sensor_device_attribute_2 *sensor_attr =
270 to_sensor_dev_attr_2(attr);
271 int index = sensor_attr->index;
272
273 return sprintf(buf, "%d\n", vid_from_reg(data->vid[index], data->vrm));
274 }
275
276 static ssize_t
277 store_vrm(struct device *dev, struct device_attribute *attr,
278 const char *buf, size_t count)
279 {
280 struct w83793_data *data = dev_get_drvdata(dev);
281 data->vrm = simple_strtoul(buf, NULL, 10);
282 return count;
283 }
284
285 #define ALARM_STATUS 0
286 #define BEEP_ENABLE 1
287 static ssize_t
288 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
289 {
290 struct w83793_data *data = w83793_update_device(dev);
291 struct sensor_device_attribute_2 *sensor_attr =
292 to_sensor_dev_attr_2(attr);
293 int nr = sensor_attr->nr;
294 int index = sensor_attr->index >> 3;
295 int bit = sensor_attr->index & 0x07;
296 u8 val;
297
298 if (ALARM_STATUS == nr) {
299 val = (data->alarms[index] >> (bit)) & 1;
300 } else { /* BEEP_ENABLE */
301 val = (data->beeps[index] >> (bit)) & 1;
302 }
303
304 return sprintf(buf, "%u\n", val);
305 }
306
307 static ssize_t
308 store_beep(struct device *dev, struct device_attribute *attr,
309 const char *buf, size_t count)
310 {
311 struct i2c_client *client = to_i2c_client(dev);
312 struct w83793_data *data = i2c_get_clientdata(client);
313 struct sensor_device_attribute_2 *sensor_attr =
314 to_sensor_dev_attr_2(attr);
315 int index = sensor_attr->index >> 3;
316 int shift = sensor_attr->index & 0x07;
317 u8 beep_bit = 1 << shift;
318 u8 val;
319
320 val = simple_strtoul(buf, NULL, 10);
321 if (val != 0 && val != 1)
322 return -EINVAL;
323
324 mutex_lock(&data->update_lock);
325 data->beeps[index] = w83793_read_value(client, W83793_REG_BEEP(index));
326 data->beeps[index] &= ~beep_bit;
327 data->beeps[index] |= val << shift;
328 w83793_write_value(client, W83793_REG_BEEP(index), data->beeps[index]);
329 mutex_unlock(&data->update_lock);
330
331 return count;
332 }
333
334 static ssize_t
335 show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf)
336 {
337 struct w83793_data *data = w83793_update_device(dev);
338 return sprintf(buf, "%u\n", (data->beep_enable >> 1) & 0x01);
339 }
340
341 static ssize_t
342 store_beep_enable(struct device *dev, struct device_attribute *attr,
343 const char *buf, size_t count)
344 {
345 struct i2c_client *client = to_i2c_client(dev);
346 struct w83793_data *data = i2c_get_clientdata(client);
347 u8 val = simple_strtoul(buf, NULL, 10);
348
349 if (val != 0 && val != 1)
350 return -EINVAL;
351
352 mutex_lock(&data->update_lock);
353 data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP)
354 & 0xfd;
355 data->beep_enable |= val << 1;
356 w83793_write_value(client, W83793_REG_OVT_BEEP, data->beep_enable);
357 mutex_unlock(&data->update_lock);
358
359 return count;
360 }
361
362 /* Write any value to clear chassis alarm */
363 static ssize_t
364 store_chassis_clear(struct device *dev,
365 struct device_attribute *attr, const char *buf,
366 size_t count)
367 {
368 struct i2c_client *client = to_i2c_client(dev);
369 struct w83793_data *data = i2c_get_clientdata(client);
370 u8 val;
371
372 mutex_lock(&data->update_lock);
373 val = w83793_read_value(client, W83793_REG_CLR_CHASSIS);
374 val |= 0x80;
375 w83793_write_value(client, W83793_REG_CLR_CHASSIS, val);
376 mutex_unlock(&data->update_lock);
377 return count;
378 }
379
380 #define FAN_INPUT 0
381 #define FAN_MIN 1
382 static ssize_t
383 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
384 {
385 struct sensor_device_attribute_2 *sensor_attr =
386 to_sensor_dev_attr_2(attr);
387 int nr = sensor_attr->nr;
388 int index = sensor_attr->index;
389 struct w83793_data *data = w83793_update_device(dev);
390 u16 val;
391
392 if (FAN_INPUT == nr) {
393 val = data->fan[index] & 0x0fff;
394 } else {
395 val = data->fan_min[index] & 0x0fff;
396 }
397
398 return sprintf(buf, "%lu\n", FAN_FROM_REG(val));
399 }
400
401 static ssize_t
402 store_fan_min(struct device *dev, struct device_attribute *attr,
403 const char *buf, size_t count)
404 {
405 struct sensor_device_attribute_2 *sensor_attr =
406 to_sensor_dev_attr_2(attr);
407 int index = sensor_attr->index;
408 struct i2c_client *client = to_i2c_client(dev);
409 struct w83793_data *data = i2c_get_clientdata(client);
410 u16 val = FAN_TO_REG(simple_strtoul(buf, NULL, 10));
411
412 mutex_lock(&data->update_lock);
413 data->fan_min[index] = val;
414 w83793_write_value(client, W83793_REG_FAN_MIN(index),
415 (val >> 8) & 0xff);
416 w83793_write_value(client, W83793_REG_FAN_MIN(index) + 1, val & 0xff);
417 mutex_unlock(&data->update_lock);
418
419 return count;
420 }
421
422 static ssize_t
423 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
424 {
425 struct sensor_device_attribute_2 *sensor_attr =
426 to_sensor_dev_attr_2(attr);
427 struct w83793_data *data = w83793_update_device(dev);
428 u16 val;
429 int nr = sensor_attr->nr;
430 int index = sensor_attr->index;
431
432 if (PWM_STOP_TIME == nr)
433 val = TIME_FROM_REG(data->pwm_stop_time[index]);
434 else
435 val = (data->pwm[index][nr] & 0x3f) << 2;
436
437 return sprintf(buf, "%d\n", val);
438 }
439
440 static ssize_t
441 store_pwm(struct device *dev, struct device_attribute *attr,
442 const char *buf, size_t count)
443 {
444 struct i2c_client *client = to_i2c_client(dev);
445 struct w83793_data *data = i2c_get_clientdata(client);
446 struct sensor_device_attribute_2 *sensor_attr =
447 to_sensor_dev_attr_2(attr);
448 int nr = sensor_attr->nr;
449 int index = sensor_attr->index;
450 u8 val;
451
452 mutex_lock(&data->update_lock);
453 if (PWM_STOP_TIME == nr) {
454 val = TIME_TO_REG(simple_strtoul(buf, NULL, 10));
455 data->pwm_stop_time[index] = val;
456 w83793_write_value(client, W83793_REG_PWM_STOP_TIME(index),
457 val);
458 } else {
459 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 0xff)
460 >> 2;
461 data->pwm[index][nr] =
462 w83793_read_value(client, W83793_REG_PWM(index, nr)) & 0xc0;
463 data->pwm[index][nr] |= val;
464 w83793_write_value(client, W83793_REG_PWM(index, nr),
465 data->pwm[index][nr]);
466 }
467
468 mutex_unlock(&data->update_lock);
469 return count;
470 }
471
472 static ssize_t
473 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
474 {
475 struct sensor_device_attribute_2 *sensor_attr =
476 to_sensor_dev_attr_2(attr);
477 int nr = sensor_attr->nr;
478 int index = sensor_attr->index;
479 struct w83793_data *data = w83793_update_device(dev);
480 long temp = TEMP_FROM_REG(data->temp[index][nr]);
481
482 if (TEMP_READ == nr && index < 4) { /* Only TD1-TD4 have low bits */
483 int low = ((data->temp_low_bits >> (index * 2)) & 0x03) * 250;
484 temp += temp > 0 ? low : -low;
485 }
486 return sprintf(buf, "%ld\n", temp);
487 }
488
489 static ssize_t
490 store_temp(struct device *dev, struct device_attribute *attr,
491 const char *buf, size_t count)
492 {
493 struct sensor_device_attribute_2 *sensor_attr =
494 to_sensor_dev_attr_2(attr);
495 int nr = sensor_attr->nr;
496 int index = sensor_attr->index;
497 struct i2c_client *client = to_i2c_client(dev);
498 struct w83793_data *data = i2c_get_clientdata(client);
499 long tmp = simple_strtol(buf, NULL, 10);
500
501 mutex_lock(&data->update_lock);
502 data->temp[index][nr] = TEMP_TO_REG(tmp, -128, 127);
503 w83793_write_value(client, W83793_REG_TEMP[index][nr],
504 data->temp[index][nr]);
505 mutex_unlock(&data->update_lock);
506 return count;
507 }
508
509 /*
510 TD1-TD4
511 each has 4 mode:(2 bits)
512 0: Stop monitor
513 1: Use internal temp sensor(default)
514 2: Reserved
515 3: Use sensor in Intel CPU and get result by PECI
516
517 TR1-TR2
518 each has 2 mode:(1 bit)
519 0: Disable temp sensor monitor
520 1: To enable temp sensors monitor
521 */
522
523 /* 0 disable, 6 PECI */
524 static u8 TO_TEMP_MODE[] = { 0, 0, 0, 6 };
525
526 static ssize_t
527 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
528 {
529 struct w83793_data *data = w83793_update_device(dev);
530 struct sensor_device_attribute_2 *sensor_attr =
531 to_sensor_dev_attr_2(attr);
532 int index = sensor_attr->index;
533 u8 mask = (index < 4) ? 0x03 : 0x01;
534 u8 shift = (index < 4) ? (2 * index) : (index - 4);
535 u8 tmp;
536 index = (index < 4) ? 0 : 1;
537
538 tmp = (data->temp_mode[index] >> shift) & mask;
539
540 /* for the internal sensor, found out if diode or thermistor */
541 if (tmp == 1) {
542 tmp = index == 0 ? 3 : 4;
543 } else {
544 tmp = TO_TEMP_MODE[tmp];
545 }
546
547 return sprintf(buf, "%d\n", tmp);
548 }
549
550 static ssize_t
551 store_temp_mode(struct device *dev, struct device_attribute *attr,
552 const char *buf, size_t count)
553 {
554 struct i2c_client *client = to_i2c_client(dev);
555 struct w83793_data *data = i2c_get_clientdata(client);
556 struct sensor_device_attribute_2 *sensor_attr =
557 to_sensor_dev_attr_2(attr);
558 int index = sensor_attr->index;
559 u8 mask = (index < 4) ? 0x03 : 0x01;
560 u8 shift = (index < 4) ? (2 * index) : (index - 4);
561 u8 val = simple_strtoul(buf, NULL, 10);
562
563 /* transform the sysfs interface values into table above */
564 if ((val == 6) && (index < 4)) {
565 val -= 3;
566 } else if ((val == 3 && index < 4)
567 || (val == 4 && index >= 4)) {
568 /* transform diode or thermistor into internal enable */
569 val = !!val;
570 } else {
571 return -EINVAL;
572 }
573
574 index = (index < 4) ? 0 : 1;
575 mutex_lock(&data->update_lock);
576 data->temp_mode[index] =
577 w83793_read_value(client, W83793_REG_TEMP_MODE[index]);
578 data->temp_mode[index] &= ~(mask << shift);
579 data->temp_mode[index] |= val << shift;
580 w83793_write_value(client, W83793_REG_TEMP_MODE[index],
581 data->temp_mode[index]);
582 mutex_unlock(&data->update_lock);
583
584 return count;
585 }
586
587 #define SETUP_PWM_DEFAULT 0
588 #define SETUP_PWM_UPTIME 1 /* Unit in 0.1s */
589 #define SETUP_PWM_DOWNTIME 2 /* Unit in 0.1s */
590 #define SETUP_TEMP_CRITICAL 3
591 static ssize_t
592 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
593 {
594 struct sensor_device_attribute_2 *sensor_attr =
595 to_sensor_dev_attr_2(attr);
596 int nr = sensor_attr->nr;
597 struct w83793_data *data = w83793_update_device(dev);
598 u32 val = 0;
599
600 if (SETUP_PWM_DEFAULT == nr) {
601 val = (data->pwm_default & 0x3f) << 2;
602 } else if (SETUP_PWM_UPTIME == nr) {
603 val = TIME_FROM_REG(data->pwm_uptime);
604 } else if (SETUP_PWM_DOWNTIME == nr) {
605 val = TIME_FROM_REG(data->pwm_downtime);
606 } else if (SETUP_TEMP_CRITICAL == nr) {
607 val = TEMP_FROM_REG(data->temp_critical & 0x7f);
608 }
609
610 return sprintf(buf, "%d\n", val);
611 }
612
613 static ssize_t
614 store_sf_setup(struct device *dev, struct device_attribute *attr,
615 const char *buf, size_t count)
616 {
617 struct sensor_device_attribute_2 *sensor_attr =
618 to_sensor_dev_attr_2(attr);
619 int nr = sensor_attr->nr;
620 struct i2c_client *client = to_i2c_client(dev);
621 struct w83793_data *data = i2c_get_clientdata(client);
622
623 mutex_lock(&data->update_lock);
624 if (SETUP_PWM_DEFAULT == nr) {
625 data->pwm_default =
626 w83793_read_value(client, W83793_REG_PWM_DEFAULT) & 0xc0;
627 data->pwm_default |= SENSORS_LIMIT(simple_strtoul(buf, NULL,
628 10),
629 0, 0xff) >> 2;
630 w83793_write_value(client, W83793_REG_PWM_DEFAULT,
631 data->pwm_default);
632 } else if (SETUP_PWM_UPTIME == nr) {
633 data->pwm_uptime = TIME_TO_REG(simple_strtoul(buf, NULL, 10));
634 data->pwm_uptime += data->pwm_uptime == 0 ? 1 : 0;
635 w83793_write_value(client, W83793_REG_PWM_UPTIME,
636 data->pwm_uptime);
637 } else if (SETUP_PWM_DOWNTIME == nr) {
638 data->pwm_downtime = TIME_TO_REG(simple_strtoul(buf, NULL, 10));
639 data->pwm_downtime += data->pwm_downtime == 0 ? 1 : 0;
640 w83793_write_value(client, W83793_REG_PWM_DOWNTIME,
641 data->pwm_downtime);
642 } else { /* SETUP_TEMP_CRITICAL */
643 data->temp_critical =
644 w83793_read_value(client, W83793_REG_TEMP_CRITICAL) & 0x80;
645 data->temp_critical |= TEMP_TO_REG(simple_strtol(buf, NULL, 10),
646 0, 0x7f);
647 w83793_write_value(client, W83793_REG_TEMP_CRITICAL,
648 data->temp_critical);
649 }
650
651 mutex_unlock(&data->update_lock);
652 return count;
653 }
654
655 /*
656 Temp SmartFan control
657 TEMP_FAN_MAP
658 Temp channel control which pwm fan, bitfield, bit 0 indicate pwm1...
659 It's possible two or more temp channels control the same fan, w83793
660 always prefers to pick the most critical request and applies it to
661 the related Fan.
662 It's possible one fan is not in any mapping of 6 temp channels, this
663 means the fan is manual mode
664
665 TEMP_PWM_ENABLE
666 Each temp channel has its own SmartFan mode, and temp channel
667 control fans that are set by TEMP_FAN_MAP
668 0: SmartFanII mode
669 1: Thermal Cruise Mode
670
671 TEMP_CRUISE
672 Target temperature in thermal cruise mode, w83793 will try to turn
673 fan speed to keep the temperature of target device around this
674 temperature.
675
676 TEMP_TOLERANCE
677 If Temp higher or lower than target with this tolerance, w83793
678 will take actions to speed up or slow down the fan to keep the
679 temperature within the tolerance range.
680 */
681
682 #define TEMP_FAN_MAP 0
683 #define TEMP_PWM_ENABLE 1
684 #define TEMP_CRUISE 2
685 #define TEMP_TOLERANCE 3
686 static ssize_t
687 show_sf_ctrl(struct device *dev, struct device_attribute *attr, char *buf)
688 {
689 struct sensor_device_attribute_2 *sensor_attr =
690 to_sensor_dev_attr_2(attr);
691 int nr = sensor_attr->nr;
692 int index = sensor_attr->index;
693 struct w83793_data *data = w83793_update_device(dev);
694 u32 val;
695
696 if (TEMP_FAN_MAP == nr) {
697 val = data->temp_fan_map[index];
698 } else if (TEMP_PWM_ENABLE == nr) {
699 /* +2 to transfrom into 2 and 3 to conform with sysfs intf */
700 val = ((data->pwm_enable >> index) & 0x01) + 2;
701 } else if (TEMP_CRUISE == nr) {
702 val = TEMP_FROM_REG(data->temp_cruise[index] & 0x7f);
703 } else { /* TEMP_TOLERANCE */
704 val = data->tolerance[index >> 1] >> ((index & 0x01) ? 4 : 0);
705 val = TEMP_FROM_REG(val & 0x0f);
706 }
707 return sprintf(buf, "%d\n", val);
708 }
709
710 static ssize_t
711 store_sf_ctrl(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 int index = sensor_attr->index;
718 struct i2c_client *client = to_i2c_client(dev);
719 struct w83793_data *data = i2c_get_clientdata(client);
720 u32 val;
721
722 mutex_lock(&data->update_lock);
723 if (TEMP_FAN_MAP == nr) {
724 val = simple_strtoul(buf, NULL, 10) & 0xff;
725 w83793_write_value(client, W83793_REG_TEMP_FAN_MAP(index), val);
726 data->temp_fan_map[index] = val;
727 } else if (TEMP_PWM_ENABLE == nr) {
728 val = simple_strtoul(buf, NULL, 10);
729 if (2 == val || 3 == val) {
730 data->pwm_enable =
731 w83793_read_value(client, W83793_REG_PWM_ENABLE);
732 if (val - 2)
733 data->pwm_enable |= 1 << index;
734 else
735 data->pwm_enable &= ~(1 << index);
736 w83793_write_value(client, W83793_REG_PWM_ENABLE,
737 data->pwm_enable);
738 } else {
739 mutex_unlock(&data->update_lock);
740 return -EINVAL;
741 }
742 } else if (TEMP_CRUISE == nr) {
743 data->temp_cruise[index] =
744 w83793_read_value(client, W83793_REG_TEMP_CRUISE(index));
745 val = TEMP_TO_REG(simple_strtol(buf, NULL, 10), 0, 0x7f);
746 data->temp_cruise[index] &= 0x80;
747 data->temp_cruise[index] |= val;
748
749 w83793_write_value(client, W83793_REG_TEMP_CRUISE(index),
750 data->temp_cruise[index]);
751 } else { /* TEMP_TOLERANCE */
752 int i = index >> 1;
753 u8 shift = (index & 0x01) ? 4 : 0;
754 data->tolerance[i] =
755 w83793_read_value(client, W83793_REG_TEMP_TOL(i));
756
757 val = TEMP_TO_REG(simple_strtol(buf, NULL, 10), 0, 0x0f);
758 data->tolerance[i] &= ~(0x0f << shift);
759 data->tolerance[i] |= val << shift;
760 w83793_write_value(client, W83793_REG_TEMP_TOL(i),
761 data->tolerance[i]);
762 }
763
764 mutex_unlock(&data->update_lock);
765 return count;
766 }
767
768 static ssize_t
769 show_sf2_pwm(struct device *dev, struct device_attribute *attr, char *buf)
770 {
771 struct sensor_device_attribute_2 *sensor_attr =
772 to_sensor_dev_attr_2(attr);
773 int nr = sensor_attr->nr;
774 int index = sensor_attr->index;
775 struct w83793_data *data = w83793_update_device(dev);
776
777 return sprintf(buf, "%d\n", (data->sf2_pwm[index][nr] & 0x3f) << 2);
778 }
779
780 static ssize_t
781 store_sf2_pwm(struct device *dev, struct device_attribute *attr,
782 const char *buf, size_t count)
783 {
784 struct i2c_client *client = to_i2c_client(dev);
785 struct w83793_data *data = i2c_get_clientdata(client);
786 struct sensor_device_attribute_2 *sensor_attr =
787 to_sensor_dev_attr_2(attr);
788 int nr = sensor_attr->nr;
789 int index = sensor_attr->index;
790 u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 0xff) >> 2;
791
792 mutex_lock(&data->update_lock);
793 data->sf2_pwm[index][nr] =
794 w83793_read_value(client, W83793_REG_SF2_PWM(index, nr)) & 0xc0;
795 data->sf2_pwm[index][nr] |= val;
796 w83793_write_value(client, W83793_REG_SF2_PWM(index, nr),
797 data->sf2_pwm[index][nr]);
798 mutex_unlock(&data->update_lock);
799 return count;
800 }
801
802 static ssize_t
803 show_sf2_temp(struct device *dev, struct device_attribute *attr, char *buf)
804 {
805 struct sensor_device_attribute_2 *sensor_attr =
806 to_sensor_dev_attr_2(attr);
807 int nr = sensor_attr->nr;
808 int index = sensor_attr->index;
809 struct w83793_data *data = w83793_update_device(dev);
810
811 return sprintf(buf, "%ld\n",
812 TEMP_FROM_REG(data->sf2_temp[index][nr] & 0x7f));
813 }
814
815 static ssize_t
816 store_sf2_temp(struct device *dev, struct device_attribute *attr,
817 const char *buf, size_t count)
818 {
819 struct i2c_client *client = to_i2c_client(dev);
820 struct w83793_data *data = i2c_get_clientdata(client);
821 struct sensor_device_attribute_2 *sensor_attr =
822 to_sensor_dev_attr_2(attr);
823 int nr = sensor_attr->nr;
824 int index = sensor_attr->index;
825 u8 val = TEMP_TO_REG(simple_strtol(buf, NULL, 10), 0, 0x7f);
826
827 mutex_lock(&data->update_lock);
828 data->sf2_temp[index][nr] =
829 w83793_read_value(client, W83793_REG_SF2_TEMP(index, nr)) & 0x80;
830 data->sf2_temp[index][nr] |= val;
831 w83793_write_value(client, W83793_REG_SF2_TEMP(index, nr),
832 data->sf2_temp[index][nr]);
833 mutex_unlock(&data->update_lock);
834 return count;
835 }
836
837 /* only Vcore A/B and Vtt have additional 2 bits precision */
838 static ssize_t
839 show_in(struct device *dev, struct device_attribute *attr, char *buf)
840 {
841 struct sensor_device_attribute_2 *sensor_attr =
842 to_sensor_dev_attr_2(attr);
843 int nr = sensor_attr->nr;
844 int index = sensor_attr->index;
845 struct w83793_data *data = w83793_update_device(dev);
846 u16 val = data->in[index][nr];
847
848 if (index < 3) {
849 val <<= 2;
850 val += (data->in_low_bits[nr] >> (index * 2)) & 0x3;
851 }
852 /* voltage inputs 5VDD and 5VSB needs 150mV offset */
853 val = val * scale_in[index] + scale_in_add[index];
854 return sprintf(buf, "%d\n", val);
855 }
856
857 static ssize_t
858 store_in(struct device *dev, struct device_attribute *attr,
859 const char *buf, size_t count)
860 {
861 struct sensor_device_attribute_2 *sensor_attr =
862 to_sensor_dev_attr_2(attr);
863 int nr = sensor_attr->nr;
864 int index = sensor_attr->index;
865 struct i2c_client *client = to_i2c_client(dev);
866 struct w83793_data *data = i2c_get_clientdata(client);
867 u32 val;
868
869 val =
870 (simple_strtoul(buf, NULL, 10) +
871 scale_in[index] / 2) / scale_in[index];
872 mutex_lock(&data->update_lock);
873 if (index > 2) {
874 /* fix the limit values of 5VDD and 5VSB to ALARM mechanism */
875 if (1 == nr || 2 == nr) {
876 val -= scale_in_add[index] / scale_in[index];
877 }
878 val = SENSORS_LIMIT(val, 0, 255);
879 } else {
880 val = SENSORS_LIMIT(val, 0, 0x3FF);
881 data->in_low_bits[nr] =
882 w83793_read_value(client, W83793_REG_IN_LOW_BITS[nr]);
883 data->in_low_bits[nr] &= ~(0x03 << (2 * index));
884 data->in_low_bits[nr] |= (val & 0x03) << (2 * index);
885 w83793_write_value(client, W83793_REG_IN_LOW_BITS[nr],
886 data->in_low_bits[nr]);
887 val >>= 2;
888 }
889 data->in[index][nr] = val;
890 w83793_write_value(client, W83793_REG_IN[index][nr],
891 data->in[index][nr]);
892 mutex_unlock(&data->update_lock);
893 return count;
894 }
895
896 #define NOT_USED -1
897
898 #define SENSOR_ATTR_IN(index) \
899 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \
900 IN_READ, index), \
901 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \
902 store_in, IN_MAX, index), \
903 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \
904 store_in, IN_LOW, index), \
905 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \
906 NULL, ALARM_STATUS, index + ((index > 2) ? 1 : 0)), \
907 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \
908 show_alarm_beep, store_beep, BEEP_ENABLE, \
909 index + ((index > 2) ? 1 : 0))
910
911 #define SENSOR_ATTR_FAN(index) \
912 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \
913 NULL, ALARM_STATUS, index + 17), \
914 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \
915 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17), \
916 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \
917 NULL, FAN_INPUT, index - 1), \
918 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \
919 show_fan, store_fan_min, FAN_MIN, index - 1)
920
921 #define SENSOR_ATTR_PWM(index) \
922 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \
923 store_pwm, PWM_DUTY, index - 1), \
924 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \
925 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \
926 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \
927 show_pwm, store_pwm, PWM_START, index - 1), \
928 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \
929 show_pwm, store_pwm, PWM_STOP_TIME, index - 1)
930
931 #define SENSOR_ATTR_TEMP(index) \
932 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR, \
933 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \
934 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \
935 NULL, TEMP_READ, index - 1), \
936 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \
937 store_temp, TEMP_CRIT, index - 1), \
938 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
939 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \
940 SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \
941 store_temp, TEMP_WARN, index - 1), \
942 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR, \
943 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \
944 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
945 show_alarm_beep, NULL, ALARM_STATUS, index + 11), \
946 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
947 show_alarm_beep, store_beep, BEEP_ENABLE, index + 11), \
948 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, \
949 S_IRUGO | S_IWUSR, show_sf_ctrl, store_sf_ctrl, \
950 TEMP_FAN_MAP, index - 1), \
951 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \
952 show_sf_ctrl, store_sf_ctrl, TEMP_PWM_ENABLE, \
953 index - 1), \
954 SENSOR_ATTR_2(thermal_cruise##index, S_IRUGO | S_IWUSR, \
955 show_sf_ctrl, store_sf_ctrl, TEMP_CRUISE, index - 1), \
956 SENSOR_ATTR_2(tolerance##index, S_IRUGO | S_IWUSR, show_sf_ctrl,\
957 store_sf_ctrl, TEMP_TOLERANCE, index - 1), \
958 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
959 show_sf2_pwm, store_sf2_pwm, 0, index - 1), \
960 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
961 show_sf2_pwm, store_sf2_pwm, 1, index - 1), \
962 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
963 show_sf2_pwm, store_sf2_pwm, 2, index - 1), \
964 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
965 show_sf2_pwm, store_sf2_pwm, 3, index - 1), \
966 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
967 show_sf2_pwm, store_sf2_pwm, 4, index - 1), \
968 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
969 show_sf2_pwm, store_sf2_pwm, 5, index - 1), \
970 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
971 show_sf2_pwm, store_sf2_pwm, 6, index - 1), \
972 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
973 show_sf2_temp, store_sf2_temp, 0, index - 1), \
974 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
975 show_sf2_temp, store_sf2_temp, 1, index - 1), \
976 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
977 show_sf2_temp, store_sf2_temp, 2, index - 1), \
978 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
979 show_sf2_temp, store_sf2_temp, 3, index - 1), \
980 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
981 show_sf2_temp, store_sf2_temp, 4, index - 1), \
982 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
983 show_sf2_temp, store_sf2_temp, 5, index - 1), \
984 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
985 show_sf2_temp, store_sf2_temp, 6, index - 1)
986
987 static struct sensor_device_attribute_2 w83793_sensor_attr_2[] = {
988 SENSOR_ATTR_IN(0),
989 SENSOR_ATTR_IN(1),
990 SENSOR_ATTR_IN(2),
991 SENSOR_ATTR_IN(3),
992 SENSOR_ATTR_IN(4),
993 SENSOR_ATTR_IN(5),
994 SENSOR_ATTR_IN(6),
995 SENSOR_ATTR_IN(7),
996 SENSOR_ATTR_IN(8),
997 SENSOR_ATTR_IN(9),
998 SENSOR_ATTR_FAN(1),
999 SENSOR_ATTR_FAN(2),
1000 SENSOR_ATTR_FAN(3),
1001 SENSOR_ATTR_FAN(4),
1002 SENSOR_ATTR_FAN(5),
1003 SENSOR_ATTR_PWM(1),
1004 SENSOR_ATTR_PWM(2),
1005 SENSOR_ATTR_PWM(3),
1006 };
1007
1008 static struct sensor_device_attribute_2 w83793_temp[] = {
1009 SENSOR_ATTR_TEMP(1),
1010 SENSOR_ATTR_TEMP(2),
1011 SENSOR_ATTR_TEMP(3),
1012 SENSOR_ATTR_TEMP(4),
1013 SENSOR_ATTR_TEMP(5),
1014 SENSOR_ATTR_TEMP(6),
1015 };
1016
1017 /* Fan6-Fan12 */
1018 static struct sensor_device_attribute_2 w83793_left_fan[] = {
1019 SENSOR_ATTR_FAN(6),
1020 SENSOR_ATTR_FAN(7),
1021 SENSOR_ATTR_FAN(8),
1022 SENSOR_ATTR_FAN(9),
1023 SENSOR_ATTR_FAN(10),
1024 SENSOR_ATTR_FAN(11),
1025 SENSOR_ATTR_FAN(12),
1026 };
1027
1028 /* Pwm4-Pwm8 */
1029 static struct sensor_device_attribute_2 w83793_left_pwm[] = {
1030 SENSOR_ATTR_PWM(4),
1031 SENSOR_ATTR_PWM(5),
1032 SENSOR_ATTR_PWM(6),
1033 SENSOR_ATTR_PWM(7),
1034 SENSOR_ATTR_PWM(8),
1035 };
1036
1037 static struct sensor_device_attribute_2 w83793_vid[] = {
1038 SENSOR_ATTR_2(cpu0_vid, S_IRUGO, show_vid, NULL, NOT_USED, 0),
1039 SENSOR_ATTR_2(cpu1_vid, S_IRUGO, show_vid, NULL, NOT_USED, 1),
1040 };
1041 static DEVICE_ATTR(vrm, S_IWUSR | S_IRUGO, show_vrm, store_vrm);
1042
1043 static struct sensor_device_attribute_2 sda_single_files[] = {
1044 SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
1045 store_chassis_clear, ALARM_STATUS, 30),
1046 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable,
1047 store_beep_enable, NOT_USED, NOT_USED),
1048 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1049 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1050 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1051 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1052 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1053 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1054 SENSOR_ATTR_2(temp_critical, S_IWUSR | S_IRUGO, show_sf_setup,
1055 store_sf_setup, SETUP_TEMP_CRITICAL, NOT_USED),
1056 };
1057
1058 static void w83793_init_client(struct i2c_client *client)
1059 {
1060 if (reset) {
1061 w83793_write_value(client, W83793_REG_CONFIG, 0x80);
1062 }
1063
1064 /* Start monitoring */
1065 w83793_write_value(client, W83793_REG_CONFIG,
1066 w83793_read_value(client, W83793_REG_CONFIG) | 0x01);
1067
1068 }
1069
1070 static int w83793_remove(struct i2c_client *client)
1071 {
1072 struct w83793_data *data = i2c_get_clientdata(client);
1073 struct device *dev = &client->dev;
1074 int i;
1075
1076 hwmon_device_unregister(data->hwmon_dev);
1077
1078 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++)
1079 device_remove_file(dev,
1080 &w83793_sensor_attr_2[i].dev_attr);
1081
1082 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
1083 device_remove_file(dev, &sda_single_files[i].dev_attr);
1084
1085 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++)
1086 device_remove_file(dev, &w83793_vid[i].dev_attr);
1087 device_remove_file(dev, &dev_attr_vrm);
1088
1089 for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++)
1090 device_remove_file(dev, &w83793_left_fan[i].dev_attr);
1091
1092 for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++)
1093 device_remove_file(dev, &w83793_left_pwm[i].dev_attr);
1094
1095 for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
1096 device_remove_file(dev, &w83793_temp[i].dev_attr);
1097
1098 if (data->lm75[0] != NULL)
1099 i2c_unregister_device(data->lm75[0]);
1100 if (data->lm75[1] != NULL)
1101 i2c_unregister_device(data->lm75[1]);
1102
1103 kfree(data);
1104
1105 return 0;
1106 }
1107
1108 static int
1109 w83793_detect_subclients(struct i2c_client *client)
1110 {
1111 int i, id, err;
1112 int address = client->addr;
1113 u8 tmp;
1114 struct i2c_adapter *adapter = client->adapter;
1115 struct w83793_data *data = i2c_get_clientdata(client);
1116
1117 id = i2c_adapter_id(adapter);
1118 if (force_subclients[0] == id && force_subclients[1] == address) {
1119 for (i = 2; i <= 3; i++) {
1120 if (force_subclients[i] < 0x48
1121 || force_subclients[i] > 0x4f) {
1122 dev_err(&client->dev,
1123 "invalid subclient "
1124 "address %d; must be 0x48-0x4f\n",
1125 force_subclients[i]);
1126 err = -EINVAL;
1127 goto ERROR_SC_0;
1128 }
1129 }
1130 w83793_write_value(client, W83793_REG_I2C_SUBADDR,
1131 (force_subclients[2] & 0x07) |
1132 ((force_subclients[3] & 0x07) << 4));
1133 }
1134
1135 tmp = w83793_read_value(client, W83793_REG_I2C_SUBADDR);
1136 if (!(tmp & 0x08)) {
1137 data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (tmp & 0x7));
1138 }
1139 if (!(tmp & 0x80)) {
1140 if ((data->lm75[0] != NULL)
1141 && ((tmp & 0x7) == ((tmp >> 4) & 0x7))) {
1142 dev_err(&client->dev,
1143 "duplicate addresses 0x%x, "
1144 "use force_subclients\n", data->lm75[0]->addr);
1145 err = -ENODEV;
1146 goto ERROR_SC_1;
1147 }
1148 data->lm75[1] = i2c_new_dummy(adapter,
1149 0x48 + ((tmp >> 4) & 0x7));
1150 }
1151
1152 return 0;
1153
1154 /* Undo inits in case of errors */
1155
1156 ERROR_SC_1:
1157 if (data->lm75[0] != NULL)
1158 i2c_unregister_device(data->lm75[0]);
1159 ERROR_SC_0:
1160 return err;
1161 }
1162
1163 /* Return 0 if detection is successful, -ENODEV otherwise */
1164 static int w83793_detect(struct i2c_client *client, int kind,
1165 struct i2c_board_info *info)
1166 {
1167 u8 tmp, bank, chip_id;
1168 struct i2c_adapter *adapter = client->adapter;
1169 unsigned short address = client->addr;
1170
1171 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1172 return -ENODEV;
1173 }
1174
1175 bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL);
1176
1177 tmp = bank & 0x80 ? 0x5c : 0xa3;
1178 /* Check Winbond vendor ID */
1179 if (tmp != i2c_smbus_read_byte_data(client, W83793_REG_VENDORID)) {
1180 pr_debug("w83793: Detection failed at check vendor id\n");
1181 return -ENODEV;
1182 }
1183
1184 /* If Winbond chip, address of chip and W83793_REG_I2C_ADDR
1185 should match */
1186 if ((bank & 0x07) == 0
1187 && i2c_smbus_read_byte_data(client, W83793_REG_I2C_ADDR) !=
1188 (address << 1)) {
1189 pr_debug("w83793: Detection failed at check i2c addr\n");
1190 return -ENODEV;
1191 }
1192
1193 /* Determine the chip type now */
1194 chip_id = i2c_smbus_read_byte_data(client, W83793_REG_CHIPID);
1195 if (chip_id != 0x7b)
1196 return -ENODEV;
1197
1198 strlcpy(info->type, "w83793", I2C_NAME_SIZE);
1199
1200 return 0;
1201 }
1202
1203 static int w83793_probe(struct i2c_client *client,
1204 const struct i2c_device_id *id)
1205 {
1206 struct device *dev = &client->dev;
1207 struct w83793_data *data;
1208 int i, tmp, val, err;
1209 int files_fan = ARRAY_SIZE(w83793_left_fan) / 7;
1210 int files_pwm = ARRAY_SIZE(w83793_left_pwm) / 5;
1211 int files_temp = ARRAY_SIZE(w83793_temp) / 6;
1212
1213 data = kzalloc(sizeof(struct w83793_data), GFP_KERNEL);
1214 if (!data) {
1215 err = -ENOMEM;
1216 goto exit;
1217 }
1218
1219 i2c_set_clientdata(client, data);
1220 data->bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL);
1221 mutex_init(&data->update_lock);
1222
1223 err = w83793_detect_subclients(client);
1224 if (err)
1225 goto free_mem;
1226
1227 /* Initialize the chip */
1228 w83793_init_client(client);
1229
1230 /*
1231 Only fan 1-5 has their own input pins,
1232 Pwm 1-3 has their own pins
1233 */
1234 data->has_fan = 0x1f;
1235 data->has_pwm = 0x07;
1236 tmp = w83793_read_value(client, W83793_REG_MFC);
1237 val = w83793_read_value(client, W83793_REG_FANIN_CTRL);
1238
1239 /* check the function of pins 49-56 */
1240 if (tmp & 0x80) {
1241 data->has_vid |= 0x2; /* has VIDB */
1242 } else {
1243 data->has_pwm |= 0x18; /* pwm 4,5 */
1244 if (val & 0x01) { /* fan 6 */
1245 data->has_fan |= 0x20;
1246 data->has_pwm |= 0x20;
1247 }
1248 if (val & 0x02) { /* fan 7 */
1249 data->has_fan |= 0x40;
1250 data->has_pwm |= 0x40;
1251 }
1252 if (!(tmp & 0x40) && (val & 0x04)) { /* fan 8 */
1253 data->has_fan |= 0x80;
1254 data->has_pwm |= 0x80;
1255 }
1256 }
1257
1258 /* check the function of pins 37-40 */
1259 if (!(tmp & 0x29))
1260 data->has_vid |= 0x1; /* has VIDA */
1261 if (0x08 == (tmp & 0x0c)) {
1262 if (val & 0x08) /* fan 9 */
1263 data->has_fan |= 0x100;
1264 if (val & 0x10) /* fan 10 */
1265 data->has_fan |= 0x200;
1266 }
1267 if (0x20 == (tmp & 0x30)) {
1268 if (val & 0x20) /* fan 11 */
1269 data->has_fan |= 0x400;
1270 if (val & 0x40) /* fan 12 */
1271 data->has_fan |= 0x800;
1272 }
1273
1274 if ((tmp & 0x01) && (val & 0x04)) { /* fan 8, second location */
1275 data->has_fan |= 0x80;
1276 data->has_pwm |= 0x80;
1277 }
1278
1279 tmp = w83793_read_value(client, W83793_REG_FANIN_SEL);
1280 if ((tmp & 0x01) && (val & 0x08)) { /* fan 9, second location */
1281 data->has_fan |= 0x100;
1282 }
1283 if ((tmp & 0x02) && (val & 0x10)) { /* fan 10, second location */
1284 data->has_fan |= 0x200;
1285 }
1286 if ((tmp & 0x04) && (val & 0x20)) { /* fan 11, second location */
1287 data->has_fan |= 0x400;
1288 }
1289 if ((tmp & 0x08) && (val & 0x40)) { /* fan 12, second location */
1290 data->has_fan |= 0x800;
1291 }
1292
1293 /* check the temp1-6 mode, ignore former AMDSI selected inputs */
1294 tmp = w83793_read_value(client,W83793_REG_TEMP_MODE[0]);
1295 if (tmp & 0x01)
1296 data->has_temp |= 0x01;
1297 if (tmp & 0x04)
1298 data->has_temp |= 0x02;
1299 if (tmp & 0x10)
1300 data->has_temp |= 0x04;
1301 if (tmp & 0x40)
1302 data->has_temp |= 0x08;
1303
1304 tmp = w83793_read_value(client,W83793_REG_TEMP_MODE[1]);
1305 if (tmp & 0x01)
1306 data->has_temp |= 0x10;
1307 if (tmp & 0x02)
1308 data->has_temp |= 0x20;
1309
1310 /* Register sysfs hooks */
1311 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) {
1312 err = device_create_file(dev,
1313 &w83793_sensor_attr_2[i].dev_attr);
1314 if (err)
1315 goto exit_remove;
1316 }
1317
1318 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) {
1319 if (!(data->has_vid & (1 << i)))
1320 continue;
1321 err = device_create_file(dev, &w83793_vid[i].dev_attr);
1322 if (err)
1323 goto exit_remove;
1324 }
1325 if (data->has_vid) {
1326 data->vrm = vid_which_vrm();
1327 err = device_create_file(dev, &dev_attr_vrm);
1328 if (err)
1329 goto exit_remove;
1330 }
1331
1332 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1333 err = device_create_file(dev, &sda_single_files[i].dev_attr);
1334 if (err)
1335 goto exit_remove;
1336
1337 }
1338
1339 for (i = 0; i < 6; i++) {
1340 int j;
1341 if (!(data->has_temp & (1 << i)))
1342 continue;
1343 for (j = 0; j < files_temp; j++) {
1344 err = device_create_file(dev,
1345 &w83793_temp[(i) * files_temp
1346 + j].dev_attr);
1347 if (err)
1348 goto exit_remove;
1349 }
1350 }
1351
1352 for (i = 5; i < 12; i++) {
1353 int j;
1354 if (!(data->has_fan & (1 << i)))
1355 continue;
1356 for (j = 0; j < files_fan; j++) {
1357 err = device_create_file(dev,
1358 &w83793_left_fan[(i - 5) * files_fan
1359 + j].dev_attr);
1360 if (err)
1361 goto exit_remove;
1362 }
1363 }
1364
1365 for (i = 3; i < 8; i++) {
1366 int j;
1367 if (!(data->has_pwm & (1 << i)))
1368 continue;
1369 for (j = 0; j < files_pwm; j++) {
1370 err = device_create_file(dev,
1371 &w83793_left_pwm[(i - 3) * files_pwm
1372 + j].dev_attr);
1373 if (err)
1374 goto exit_remove;
1375 }
1376 }
1377
1378 data->hwmon_dev = hwmon_device_register(dev);
1379 if (IS_ERR(data->hwmon_dev)) {
1380 err = PTR_ERR(data->hwmon_dev);
1381 goto exit_remove;
1382 }
1383
1384 return 0;
1385
1386 /* Unregister sysfs hooks */
1387
1388 exit_remove:
1389 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++)
1390 device_remove_file(dev, &w83793_sensor_attr_2[i].dev_attr);
1391
1392 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
1393 device_remove_file(dev, &sda_single_files[i].dev_attr);
1394
1395 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++)
1396 device_remove_file(dev, &w83793_vid[i].dev_attr);
1397
1398 for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++)
1399 device_remove_file(dev, &w83793_left_fan[i].dev_attr);
1400
1401 for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++)
1402 device_remove_file(dev, &w83793_left_pwm[i].dev_attr);
1403
1404 for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
1405 device_remove_file(dev, &w83793_temp[i].dev_attr);
1406
1407 if (data->lm75[0] != NULL)
1408 i2c_unregister_device(data->lm75[0]);
1409 if (data->lm75[1] != NULL)
1410 i2c_unregister_device(data->lm75[1]);
1411 free_mem:
1412 kfree(data);
1413 exit:
1414 return err;
1415 }
1416
1417 static void w83793_update_nonvolatile(struct device *dev)
1418 {
1419 struct i2c_client *client = to_i2c_client(dev);
1420 struct w83793_data *data = i2c_get_clientdata(client);
1421 int i, j;
1422 /*
1423 They are somewhat "stable" registers, and to update them everytime
1424 takes so much time, it's just not worthy. Update them in a long
1425 interval to avoid exception.
1426 */
1427 if (!(time_after(jiffies, data->last_nonvolatile + HZ * 300)
1428 || !data->valid))
1429 return;
1430 /* update voltage limits */
1431 for (i = 1; i < 3; i++) {
1432 for (j = 0; j < ARRAY_SIZE(data->in); j++) {
1433 data->in[j][i] =
1434 w83793_read_value(client, W83793_REG_IN[j][i]);
1435 }
1436 data->in_low_bits[i] =
1437 w83793_read_value(client, W83793_REG_IN_LOW_BITS[i]);
1438 }
1439
1440 for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
1441 /* Update the Fan measured value and limits */
1442 if (!(data->has_fan & (1 << i))) {
1443 continue;
1444 }
1445 data->fan_min[i] =
1446 w83793_read_value(client, W83793_REG_FAN_MIN(i)) << 8;
1447 data->fan_min[i] |=
1448 w83793_read_value(client, W83793_REG_FAN_MIN(i) + 1);
1449 }
1450
1451 for (i = 0; i < ARRAY_SIZE(data->temp_fan_map); i++) {
1452 if (!(data->has_temp & (1 << i)))
1453 continue;
1454 data->temp_fan_map[i] =
1455 w83793_read_value(client, W83793_REG_TEMP_FAN_MAP(i));
1456 for (j = 1; j < 5; j++) {
1457 data->temp[i][j] =
1458 w83793_read_value(client, W83793_REG_TEMP[i][j]);
1459 }
1460 data->temp_cruise[i] =
1461 w83793_read_value(client, W83793_REG_TEMP_CRUISE(i));
1462 for (j = 0; j < 7; j++) {
1463 data->sf2_pwm[i][j] =
1464 w83793_read_value(client, W83793_REG_SF2_PWM(i, j));
1465 data->sf2_temp[i][j] =
1466 w83793_read_value(client,
1467 W83793_REG_SF2_TEMP(i, j));
1468 }
1469 }
1470
1471 for (i = 0; i < ARRAY_SIZE(data->temp_mode); i++)
1472 data->temp_mode[i] =
1473 w83793_read_value(client, W83793_REG_TEMP_MODE[i]);
1474
1475 for (i = 0; i < ARRAY_SIZE(data->tolerance); i++) {
1476 data->tolerance[i] =
1477 w83793_read_value(client, W83793_REG_TEMP_TOL(i));
1478 }
1479
1480 for (i = 0; i < ARRAY_SIZE(data->pwm); i++) {
1481 if (!(data->has_pwm & (1 << i)))
1482 continue;
1483 data->pwm[i][PWM_NONSTOP] =
1484 w83793_read_value(client, W83793_REG_PWM(i, PWM_NONSTOP));
1485 data->pwm[i][PWM_START] =
1486 w83793_read_value(client, W83793_REG_PWM(i, PWM_START));
1487 data->pwm_stop_time[i] =
1488 w83793_read_value(client, W83793_REG_PWM_STOP_TIME(i));
1489 }
1490
1491 data->pwm_default = w83793_read_value(client, W83793_REG_PWM_DEFAULT);
1492 data->pwm_enable = w83793_read_value(client, W83793_REG_PWM_ENABLE);
1493 data->pwm_uptime = w83793_read_value(client, W83793_REG_PWM_UPTIME);
1494 data->pwm_downtime = w83793_read_value(client, W83793_REG_PWM_DOWNTIME);
1495 data->temp_critical =
1496 w83793_read_value(client, W83793_REG_TEMP_CRITICAL);
1497 data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP);
1498
1499 for (i = 0; i < ARRAY_SIZE(data->beeps); i++) {
1500 data->beeps[i] = w83793_read_value(client, W83793_REG_BEEP(i));
1501 }
1502
1503 data->last_nonvolatile = jiffies;
1504 }
1505
1506 static struct w83793_data *w83793_update_device(struct device *dev)
1507 {
1508 struct i2c_client *client = to_i2c_client(dev);
1509 struct w83793_data *data = i2c_get_clientdata(client);
1510 int i;
1511
1512 mutex_lock(&data->update_lock);
1513
1514 if (!(time_after(jiffies, data->last_updated + HZ * 2)
1515 || !data->valid))
1516 goto END;
1517
1518 /* Update the voltages measured value and limits */
1519 for (i = 0; i < ARRAY_SIZE(data->in); i++)
1520 data->in[i][IN_READ] =
1521 w83793_read_value(client, W83793_REG_IN[i][IN_READ]);
1522
1523 data->in_low_bits[IN_READ] =
1524 w83793_read_value(client, W83793_REG_IN_LOW_BITS[IN_READ]);
1525
1526 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
1527 if (!(data->has_fan & (1 << i))) {
1528 continue;
1529 }
1530 data->fan[i] =
1531 w83793_read_value(client, W83793_REG_FAN(i)) << 8;
1532 data->fan[i] |=
1533 w83793_read_value(client, W83793_REG_FAN(i) + 1);
1534 }
1535
1536 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
1537 if (!(data->has_temp & (1 << i)))
1538 continue;
1539 data->temp[i][TEMP_READ] =
1540 w83793_read_value(client, W83793_REG_TEMP[i][TEMP_READ]);
1541 }
1542
1543 data->temp_low_bits =
1544 w83793_read_value(client, W83793_REG_TEMP_LOW_BITS);
1545
1546 for (i = 0; i < ARRAY_SIZE(data->pwm); i++) {
1547 if (data->has_pwm & (1 << i))
1548 data->pwm[i][PWM_DUTY] =
1549 w83793_read_value(client,
1550 W83793_REG_PWM(i, PWM_DUTY));
1551 }
1552
1553 for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
1554 data->alarms[i] =
1555 w83793_read_value(client, W83793_REG_ALARM(i));
1556 if (data->has_vid & 0x01)
1557 data->vid[0] = w83793_read_value(client, W83793_REG_VID_INA);
1558 if (data->has_vid & 0x02)
1559 data->vid[1] = w83793_read_value(client, W83793_REG_VID_INB);
1560 w83793_update_nonvolatile(dev);
1561 data->last_updated = jiffies;
1562 data->valid = 1;
1563
1564 END:
1565 mutex_unlock(&data->update_lock);
1566 return data;
1567 }
1568
1569 /* Ignore the possibility that somebody change bank outside the driver
1570 Must be called with data->update_lock held, except during initialization */
1571 static u8 w83793_read_value(struct i2c_client *client, u16 reg)
1572 {
1573 struct w83793_data *data = i2c_get_clientdata(client);
1574 u8 res = 0xff;
1575 u8 new_bank = reg >> 8;
1576
1577 new_bank |= data->bank & 0xfc;
1578 if (data->bank != new_bank) {
1579 if (i2c_smbus_write_byte_data
1580 (client, W83793_REG_BANKSEL, new_bank) >= 0)
1581 data->bank = new_bank;
1582 else {
1583 dev_err(&client->dev,
1584 "set bank to %d failed, fall back "
1585 "to bank %d, read reg 0x%x error\n",
1586 new_bank, data->bank, reg);
1587 res = 0x0; /* read 0x0 from the chip */
1588 goto END;
1589 }
1590 }
1591 res = i2c_smbus_read_byte_data(client, reg & 0xff);
1592 END:
1593 return res;
1594 }
1595
1596 /* Must be called with data->update_lock held, except during initialization */
1597 static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value)
1598 {
1599 struct w83793_data *data = i2c_get_clientdata(client);
1600 int res;
1601 u8 new_bank = reg >> 8;
1602
1603 new_bank |= data->bank & 0xfc;
1604 if (data->bank != new_bank) {
1605 if ((res = i2c_smbus_write_byte_data
1606 (client, W83793_REG_BANKSEL, new_bank)) >= 0)
1607 data->bank = new_bank;
1608 else {
1609 dev_err(&client->dev,
1610 "set bank to %d failed, fall back "
1611 "to bank %d, write reg 0x%x error\n",
1612 new_bank, data->bank, reg);
1613 goto END;
1614 }
1615 }
1616
1617 res = i2c_smbus_write_byte_data(client, reg & 0xff, value);
1618 END:
1619 return res;
1620 }
1621
1622 static int __init sensors_w83793_init(void)
1623 {
1624 return i2c_add_driver(&w83793_driver);
1625 }
1626
1627 static void __exit sensors_w83793_exit(void)
1628 {
1629 i2c_del_driver(&w83793_driver);
1630 }
1631
1632 MODULE_AUTHOR("Yuan Mu");
1633 MODULE_DESCRIPTION("w83793 driver");
1634 MODULE_LICENSE("GPL");
1635
1636 module_init(sensors_w83793_init);
1637 module_exit(sensors_w83793_exit);
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