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Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
[linux-2.6/mini2440.git] / drivers / hwmon / w83793.c
blob47dd398f72589ba795abbb11e550e9bb82fd4e00
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;
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 if (kind < 0) {
1178 tmp = bank & 0x80 ? 0x5c : 0xa3;
1179 /* Check Winbond vendor ID */
1180 if (tmp != i2c_smbus_read_byte_data(client,
1181 W83793_REG_VENDORID)) {
1182 pr_debug("w83793: Detection failed at check "
1183 "vendor id\n");
1184 return -ENODEV;
1185 }
1186
1187 /* If Winbond chip, address of chip and W83793_REG_I2C_ADDR
1188 should match */
1189 if ((bank & 0x07) == 0
1190 && i2c_smbus_read_byte_data(client, W83793_REG_I2C_ADDR) !=
1191 (address << 1)) {
1192 pr_debug("w83793: Detection failed at check "
1193 "i2c addr\n");
1194 return -ENODEV;
1195 }
1196
1197 }
1198
1199 /* We have either had a force parameter, or we have already detected the
1200 Winbond. Determine the chip type now */
1201
1202 if (kind <= 0) {
1203 if (0x7b == i2c_smbus_read_byte_data(client,
1204 W83793_REG_CHIPID)) {
1205 kind = w83793;
1206 } else {
1207 if (kind == 0)
1208 dev_warn(&adapter->dev, "w83793: Ignoring "
1209 "'force' parameter for unknown chip "
1210 "at address 0x%02x\n", address);
1211 return -ENODEV;
1212 }
1213 }
1214
1215 strlcpy(info->type, "w83793", I2C_NAME_SIZE);
1216
1217 return 0;
1218 }
1219
1220 static int w83793_probe(struct i2c_client *client,
1221 const struct i2c_device_id *id)
1222 {
1223 struct device *dev = &client->dev;
1224 struct w83793_data *data;
1225 int i, tmp, val, err;
1226 int files_fan = ARRAY_SIZE(w83793_left_fan) / 7;
1227 int files_pwm = ARRAY_SIZE(w83793_left_pwm) / 5;
1228 int files_temp = ARRAY_SIZE(w83793_temp) / 6;
1229
1230 data = kzalloc(sizeof(struct w83793_data), GFP_KERNEL);
1231 if (!data) {
1232 err = -ENOMEM;
1233 goto exit;
1234 }
1235
1236 i2c_set_clientdata(client, data);
1237 data->bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL);
1238 mutex_init(&data->update_lock);
1239
1240 err = w83793_detect_subclients(client);
1241 if (err)
1242 goto free_mem;
1243
1244 /* Initialize the chip */
1245 w83793_init_client(client);
1246
1247 /*
1248 Only fan 1-5 has their own input pins,
1249 Pwm 1-3 has their own pins
1250 */
1251 data->has_fan = 0x1f;
1252 data->has_pwm = 0x07;
1253 tmp = w83793_read_value(client, W83793_REG_MFC);
1254 val = w83793_read_value(client, W83793_REG_FANIN_CTRL);
1255
1256 /* check the function of pins 49-56 */
1257 if (tmp & 0x80) {
1258 data->has_vid |= 0x2; /* has VIDB */
1259 } else {
1260 data->has_pwm |= 0x18; /* pwm 4,5 */
1261 if (val & 0x01) { /* fan 6 */
1262 data->has_fan |= 0x20;
1263 data->has_pwm |= 0x20;
1264 }
1265 if (val & 0x02) { /* fan 7 */
1266 data->has_fan |= 0x40;
1267 data->has_pwm |= 0x40;
1268 }
1269 if (!(tmp & 0x40) && (val & 0x04)) { /* fan 8 */
1270 data->has_fan |= 0x80;
1271 data->has_pwm |= 0x80;
1272 }
1273 }
1274
1275 /* check the function of pins 37-40 */
1276 if (!(tmp & 0x29))
1277 data->has_vid |= 0x1; /* has VIDA */
1278 if (0x08 == (tmp & 0x0c)) {
1279 if (val & 0x08) /* fan 9 */
1280 data->has_fan |= 0x100;
1281 if (val & 0x10) /* fan 10 */
1282 data->has_fan |= 0x200;
1283 }
1284 if (0x20 == (tmp & 0x30)) {
1285 if (val & 0x20) /* fan 11 */
1286 data->has_fan |= 0x400;
1287 if (val & 0x40) /* fan 12 */
1288 data->has_fan |= 0x800;
1289 }
1290
1291 if ((tmp & 0x01) && (val & 0x04)) { /* fan 8, second location */
1292 data->has_fan |= 0x80;
1293 data->has_pwm |= 0x80;
1294 }
1295
1296 tmp = w83793_read_value(client, W83793_REG_FANIN_SEL);
1297 if ((tmp & 0x01) && (val & 0x08)) { /* fan 9, second location */
1298 data->has_fan |= 0x100;
1299 }
1300 if ((tmp & 0x02) && (val & 0x10)) { /* fan 10, second location */
1301 data->has_fan |= 0x200;
1302 }
1303 if ((tmp & 0x04) && (val & 0x20)) { /* fan 11, second location */
1304 data->has_fan |= 0x400;
1305 }
1306 if ((tmp & 0x08) && (val & 0x40)) { /* fan 12, second location */
1307 data->has_fan |= 0x800;
1308 }
1309
1310 /* check the temp1-6 mode, ignore former AMDSI selected inputs */
1311 tmp = w83793_read_value(client,W83793_REG_TEMP_MODE[0]);
1312 if (tmp & 0x01)
1313 data->has_temp |= 0x01;
1314 if (tmp & 0x04)
1315 data->has_temp |= 0x02;
1316 if (tmp & 0x10)
1317 data->has_temp |= 0x04;
1318 if (tmp & 0x40)
1319 data->has_temp |= 0x08;
1320
1321 tmp = w83793_read_value(client,W83793_REG_TEMP_MODE[1]);
1322 if (tmp & 0x01)
1323 data->has_temp |= 0x10;
1324 if (tmp & 0x02)
1325 data->has_temp |= 0x20;
1326
1327 /* Register sysfs hooks */
1328 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) {
1329 err = device_create_file(dev,
1330 &w83793_sensor_attr_2[i].dev_attr);
1331 if (err)
1332 goto exit_remove;
1333 }
1334
1335 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) {
1336 if (!(data->has_vid & (1 << i)))
1337 continue;
1338 err = device_create_file(dev, &w83793_vid[i].dev_attr);
1339 if (err)
1340 goto exit_remove;
1341 }
1342 if (data->has_vid) {
1343 data->vrm = vid_which_vrm();
1344 err = device_create_file(dev, &dev_attr_vrm);
1345 if (err)
1346 goto exit_remove;
1347 }
1348
1349 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1350 err = device_create_file(dev, &sda_single_files[i].dev_attr);
1351 if (err)
1352 goto exit_remove;
1353
1354 }
1355
1356 for (i = 0; i < 6; i++) {
1357 int j;
1358 if (!(data->has_temp & (1 << i)))
1359 continue;
1360 for (j = 0; j < files_temp; j++) {
1361 err = device_create_file(dev,
1362 &w83793_temp[(i) * files_temp
1363 + j].dev_attr);
1364 if (err)
1365 goto exit_remove;
1366 }
1367 }
1368
1369 for (i = 5; i < 12; i++) {
1370 int j;
1371 if (!(data->has_fan & (1 << i)))
1372 continue;
1373 for (j = 0; j < files_fan; j++) {
1374 err = device_create_file(dev,
1375 &w83793_left_fan[(i - 5) * files_fan
1376 + j].dev_attr);
1377 if (err)
1378 goto exit_remove;
1379 }
1380 }
1381
1382 for (i = 3; i < 8; i++) {
1383 int j;
1384 if (!(data->has_pwm & (1 << i)))
1385 continue;
1386 for (j = 0; j < files_pwm; j++) {
1387 err = device_create_file(dev,
1388 &w83793_left_pwm[(i - 3) * files_pwm
1389 + j].dev_attr);
1390 if (err)
1391 goto exit_remove;
1392 }
1393 }
1394
1395 data->hwmon_dev = hwmon_device_register(dev);
1396 if (IS_ERR(data->hwmon_dev)) {
1397 err = PTR_ERR(data->hwmon_dev);
1398 goto exit_remove;
1399 }
1400
1401 return 0;
1402
1403 /* Unregister sysfs hooks */
1404
1405 exit_remove:
1406 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++)
1407 device_remove_file(dev, &w83793_sensor_attr_2[i].dev_attr);
1408
1409 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
1410 device_remove_file(dev, &sda_single_files[i].dev_attr);
1411
1412 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++)
1413 device_remove_file(dev, &w83793_vid[i].dev_attr);
1414
1415 for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++)
1416 device_remove_file(dev, &w83793_left_fan[i].dev_attr);
1417
1418 for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++)
1419 device_remove_file(dev, &w83793_left_pwm[i].dev_attr);
1420
1421 for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
1422 device_remove_file(dev, &w83793_temp[i].dev_attr);
1423
1424 if (data->lm75[0] != NULL)
1425 i2c_unregister_device(data->lm75[0]);
1426 if (data->lm75[1] != NULL)
1427 i2c_unregister_device(data->lm75[1]);
1428 free_mem:
1429 kfree(data);
1430 exit:
1431 return err;
1432 }
1433
1434 static void w83793_update_nonvolatile(struct device *dev)
1435 {
1436 struct i2c_client *client = to_i2c_client(dev);
1437 struct w83793_data *data = i2c_get_clientdata(client);
1438 int i, j;
1439 /*
1440 They are somewhat "stable" registers, and to update them everytime
1441 takes so much time, it's just not worthy. Update them in a long
1442 interval to avoid exception.
1443 */
1444 if (!(time_after(jiffies, data->last_nonvolatile + HZ * 300)
1445 || !data->valid))
1446 return;
1447 /* update voltage limits */
1448 for (i = 1; i < 3; i++) {
1449 for (j = 0; j < ARRAY_SIZE(data->in); j++) {
1450 data->in[j][i] =
1451 w83793_read_value(client, W83793_REG_IN[j][i]);
1452 }
1453 data->in_low_bits[i] =
1454 w83793_read_value(client, W83793_REG_IN_LOW_BITS[i]);
1455 }
1456
1457 for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
1458 /* Update the Fan measured value and limits */
1459 if (!(data->has_fan & (1 << i))) {
1460 continue;
1461 }
1462 data->fan_min[i] =
1463 w83793_read_value(client, W83793_REG_FAN_MIN(i)) << 8;
1464 data->fan_min[i] |=
1465 w83793_read_value(client, W83793_REG_FAN_MIN(i) + 1);
1466 }
1467
1468 for (i = 0; i < ARRAY_SIZE(data->temp_fan_map); i++) {
1469 if (!(data->has_temp & (1 << i)))
1470 continue;
1471 data->temp_fan_map[i] =
1472 w83793_read_value(client, W83793_REG_TEMP_FAN_MAP(i));
1473 for (j = 1; j < 5; j++) {
1474 data->temp[i][j] =
1475 w83793_read_value(client, W83793_REG_TEMP[i][j]);
1476 }
1477 data->temp_cruise[i] =
1478 w83793_read_value(client, W83793_REG_TEMP_CRUISE(i));
1479 for (j = 0; j < 7; j++) {
1480 data->sf2_pwm[i][j] =
1481 w83793_read_value(client, W83793_REG_SF2_PWM(i, j));
1482 data->sf2_temp[i][j] =
1483 w83793_read_value(client,
1484 W83793_REG_SF2_TEMP(i, j));
1485 }
1486 }
1487
1488 for (i = 0; i < ARRAY_SIZE(data->temp_mode); i++)
1489 data->temp_mode[i] =
1490 w83793_read_value(client, W83793_REG_TEMP_MODE[i]);
1491
1492 for (i = 0; i < ARRAY_SIZE(data->tolerance); i++) {
1493 data->tolerance[i] =
1494 w83793_read_value(client, W83793_REG_TEMP_TOL(i));
1495 }
1496
1497 for (i = 0; i < ARRAY_SIZE(data->pwm); i++) {
1498 if (!(data->has_pwm & (1 << i)))
1499 continue;
1500 data->pwm[i][PWM_NONSTOP] =
1501 w83793_read_value(client, W83793_REG_PWM(i, PWM_NONSTOP));
1502 data->pwm[i][PWM_START] =
1503 w83793_read_value(client, W83793_REG_PWM(i, PWM_START));
1504 data->pwm_stop_time[i] =
1505 w83793_read_value(client, W83793_REG_PWM_STOP_TIME(i));
1506 }
1507
1508 data->pwm_default = w83793_read_value(client, W83793_REG_PWM_DEFAULT);
1509 data->pwm_enable = w83793_read_value(client, W83793_REG_PWM_ENABLE);
1510 data->pwm_uptime = w83793_read_value(client, W83793_REG_PWM_UPTIME);
1511 data->pwm_downtime = w83793_read_value(client, W83793_REG_PWM_DOWNTIME);
1512 data->temp_critical =
1513 w83793_read_value(client, W83793_REG_TEMP_CRITICAL);
1514 data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP);
1515
1516 for (i = 0; i < ARRAY_SIZE(data->beeps); i++) {
1517 data->beeps[i] = w83793_read_value(client, W83793_REG_BEEP(i));
1518 }
1519
1520 data->last_nonvolatile = jiffies;
1521 }
1522
1523 static struct w83793_data *w83793_update_device(struct device *dev)
1524 {
1525 struct i2c_client *client = to_i2c_client(dev);
1526 struct w83793_data *data = i2c_get_clientdata(client);
1527 int i;
1528
1529 mutex_lock(&data->update_lock);
1530
1531 if (!(time_after(jiffies, data->last_updated + HZ * 2)
1532 || !data->valid))
1533 goto END;
1534
1535 /* Update the voltages measured value and limits */
1536 for (i = 0; i < ARRAY_SIZE(data->in); i++)
1537 data->in[i][IN_READ] =
1538 w83793_read_value(client, W83793_REG_IN[i][IN_READ]);
1539
1540 data->in_low_bits[IN_READ] =
1541 w83793_read_value(client, W83793_REG_IN_LOW_BITS[IN_READ]);
1542
1543 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
1544 if (!(data->has_fan & (1 << i))) {
1545 continue;
1546 }
1547 data->fan[i] =
1548 w83793_read_value(client, W83793_REG_FAN(i)) << 8;
1549 data->fan[i] |=
1550 w83793_read_value(client, W83793_REG_FAN(i) + 1);
1551 }
1552
1553 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
1554 if (!(data->has_temp & (1 << i)))
1555 continue;
1556 data->temp[i][TEMP_READ] =
1557 w83793_read_value(client, W83793_REG_TEMP[i][TEMP_READ]);
1558 }
1559
1560 data->temp_low_bits =
1561 w83793_read_value(client, W83793_REG_TEMP_LOW_BITS);
1562
1563 for (i = 0; i < ARRAY_SIZE(data->pwm); i++) {
1564 if (data->has_pwm & (1 << i))
1565 data->pwm[i][PWM_DUTY] =
1566 w83793_read_value(client,
1567 W83793_REG_PWM(i, PWM_DUTY));
1568 }
1569
1570 for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
1571 data->alarms[i] =
1572 w83793_read_value(client, W83793_REG_ALARM(i));
1573 if (data->has_vid & 0x01)
1574 data->vid[0] = w83793_read_value(client, W83793_REG_VID_INA);
1575 if (data->has_vid & 0x02)
1576 data->vid[1] = w83793_read_value(client, W83793_REG_VID_INB);
1577 w83793_update_nonvolatile(dev);
1578 data->last_updated = jiffies;
1579 data->valid = 1;
1580
1581 END:
1582 mutex_unlock(&data->update_lock);
1583 return data;
1584 }
1585
1586 /* Ignore the possibility that somebody change bank outside the driver
1587 Must be called with data->update_lock held, except during initialization */
1588 static u8 w83793_read_value(struct i2c_client *client, u16 reg)
1589 {
1590 struct w83793_data *data = i2c_get_clientdata(client);
1591 u8 res = 0xff;
1592 u8 new_bank = reg >> 8;
1593
1594 new_bank |= data->bank & 0xfc;
1595 if (data->bank != new_bank) {
1596 if (i2c_smbus_write_byte_data
1597 (client, W83793_REG_BANKSEL, new_bank) >= 0)
1598 data->bank = new_bank;
1599 else {
1600 dev_err(&client->dev,
1601 "set bank to %d failed, fall back "
1602 "to bank %d, read reg 0x%x error\n",
1603 new_bank, data->bank, reg);
1604 res = 0x0; /* read 0x0 from the chip */
1605 goto END;
1606 }
1607 }
1608 res = i2c_smbus_read_byte_data(client, reg & 0xff);
1609 END:
1610 return res;
1611 }
1612
1613 /* Must be called with data->update_lock held, except during initialization */
1614 static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value)
1615 {
1616 struct w83793_data *data = i2c_get_clientdata(client);
1617 int res;
1618 u8 new_bank = reg >> 8;
1619
1620 new_bank |= data->bank & 0xfc;
1621 if (data->bank != new_bank) {
1622 if ((res = i2c_smbus_write_byte_data
1623 (client, W83793_REG_BANKSEL, new_bank)) >= 0)
1624 data->bank = new_bank;
1625 else {
1626 dev_err(&client->dev,
1627 "set bank to %d failed, fall back "
1628 "to bank %d, write reg 0x%x error\n",
1629 new_bank, data->bank, reg);
1630 goto END;
1631 }
1632 }
1633
1634 res = i2c_smbus_write_byte_data(client, reg & 0xff, value);
1635 END:
1636 return res;
1637 }
1638
1639 static int __init sensors_w83793_init(void)
1640 {
1641 return i2c_add_driver(&w83793_driver);
1642 }
1643
1644 static void __exit sensors_w83793_exit(void)
1645 {
1646 i2c_del_driver(&w83793_driver);
1647 }
1648
1649 MODULE_AUTHOR("Yuan Mu");
1650 MODULE_DESCRIPTION("w83793 driver");
1651 MODULE_LICENSE("GPL");
1652
1653 module_init(sensors_w83793_init);
1654 module_exit(sensors_w83793_exit);
Support for the Chinese Samsung S3C2440 based development boards