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36#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
37
38#include <linux/module.h>
39#include <linux/init.h>
40#include <linux/slab.h>
41#include <linux/jiffies.h>
42#include <linux/i2c.h>
43#include <linux/hwmon.h>
44#include <linux/hwmon-vid.h>
45#include <linux/hwmon-sysfs.h>
46#include <linux/sysfs.h>
47#include <linux/err.h>
48#include <linux/mutex.h>
49
50#ifdef CONFIG_ISA
51#include <linux/platform_device.h>
52#include <linux/ioport.h>
53#include <linux/io.h>
54#endif
55
56#include "lm75.h"
57
58
59static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
60 0x2e, 0x2f, I2C_CLIENT_END };
61
62enum chips { w83781d, w83782d, w83783s, as99127f };
63
64
65static unsigned short force_subclients[4];
66module_param_array(force_subclients, short, NULL, 0);
67MODULE_PARM_DESC(force_subclients,
68 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
69
70static bool reset;
71module_param(reset, bool, 0);
72MODULE_PARM_DESC(reset, "Set to one to reset chip on load");
73
74static bool init = 1;
75module_param(init, bool, 0);
76MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");
77
78
79
80
81#define W83781D_EXTENT 8
82
83
84#define W83781D_ADDR_REG_OFFSET 5
85#define W83781D_DATA_REG_OFFSET 6
86
87
88
89#define W83781D_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
90 (0x554 + (((nr) - 7) * 2)))
91#define W83781D_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
92 (0x555 + (((nr) - 7) * 2)))
93#define W83781D_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
94 (0x550 + (nr) - 7))
95
96
97#define W83781D_REG_FAN_MIN(nr) (0x3b + (nr))
98#define W83781D_REG_FAN(nr) (0x28 + (nr))
99
100#define W83781D_REG_BANK 0x4E
101#define W83781D_REG_TEMP2_CONFIG 0x152
102#define W83781D_REG_TEMP3_CONFIG 0x252
103
104#define W83781D_REG_TEMP(nr) ((nr == 3) ? (0x0250) : \
105 ((nr == 2) ? (0x0150) : \
106 (0x27)))
107#define W83781D_REG_TEMP_HYST(nr) ((nr == 3) ? (0x253) : \
108 ((nr == 2) ? (0x153) : \
109 (0x3A)))
110#define W83781D_REG_TEMP_OVER(nr) ((nr == 3) ? (0x255) : \
111 ((nr == 2) ? (0x155) : \
112 (0x39)))
113
114#define W83781D_REG_CONFIG 0x40
115
116
117#define W83781D_REG_ALARM1 0x41
118#define W83781D_REG_ALARM2 0x42
119
120
121#define W83782D_REG_ALARM1 0x459
122#define W83782D_REG_ALARM2 0x45A
123#define W83782D_REG_ALARM3 0x45B
124
125#define W83781D_REG_BEEP_CONFIG 0x4D
126#define W83781D_REG_BEEP_INTS1 0x56
127#define W83781D_REG_BEEP_INTS2 0x57
128#define W83781D_REG_BEEP_INTS3 0x453
129
130#define W83781D_REG_VID_FANDIV 0x47
131
132#define W83781D_REG_CHIPID 0x49
133#define W83781D_REG_WCHIPID 0x58
134#define W83781D_REG_CHIPMAN 0x4F
135#define W83781D_REG_PIN 0x4B
136
137
138#define W83781D_REG_VBAT 0x5D
139
140
141static const u8 W83781D_REG_PWM[] = { 0x5B, 0x5A, 0x5E, 0x5F };
142#define W83781D_REG_PWMCLK12 0x5C
143#define W83781D_REG_PWMCLK34 0x45C
144
145#define W83781D_REG_I2C_ADDR 0x48
146#define W83781D_REG_I2C_SUBADDR 0x4A
147
148
149
150
151
152
153#define W83781D_REG_SCFG1 0x5D
154static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
155
156#define W83781D_REG_SCFG2 0x59
157static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
158
159#define W83781D_DEFAULT_BETA 3435
160
161
162#define IN_TO_REG(val) clamp_val(((val) + 8) / 16, 0, 255)
163#define IN_FROM_REG(val) ((val) * 16)
164
165static inline u8
166FAN_TO_REG(long rpm, int div)
167{
168 if (rpm == 0)
169 return 255;
170 rpm = clamp_val(rpm, 1, 1000000);
171 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
172}
173
174static inline long
175FAN_FROM_REG(u8 val, int div)
176{
177 if (val == 0)
178 return -1;
179 if (val == 255)
180 return 0;
181 return 1350000 / (val * div);
182}
183
184#define TEMP_TO_REG(val) clamp_val((val) / 1000, -127, 128)
185#define TEMP_FROM_REG(val) ((val) * 1000)
186
187#define BEEP_MASK_FROM_REG(val, type) ((type) == as99127f ? \
188 (~(val)) & 0x7fff : (val) & 0xff7fff)
189#define BEEP_MASK_TO_REG(val, type) ((type) == as99127f ? \
190 (~(val)) & 0x7fff : (val) & 0xff7fff)
191
192#define DIV_FROM_REG(val) (1 << (val))
193
194static inline u8
195DIV_TO_REG(long val, enum chips type)
196{
197 int i;
198 val = clamp_val(val, 1,
199 ((type == w83781d || type == as99127f) ? 8 : 128)) >> 1;
200 for (i = 0; i < 7; i++) {
201 if (val == 0)
202 break;
203 val >>= 1;
204 }
205 return i;
206}
207
208struct w83781d_data {
209 struct i2c_client *client;
210 struct device *hwmon_dev;
211 struct mutex lock;
212 enum chips type;
213
214
215 const char *name;
216 int isa_addr;
217
218 struct mutex update_lock;
219 char valid;
220 unsigned long last_updated;
221
222 struct i2c_client *lm75[2];
223
224
225 u8 in[9];
226 u8 in_max[9];
227 u8 in_min[9];
228 u8 fan[3];
229 u8 fan_min[3];
230 s8 temp;
231 s8 temp_max;
232 s8 temp_max_hyst;
233 u16 temp_add[2];
234 u16 temp_max_add[2];
235 u16 temp_max_hyst_add[2];
236 u8 fan_div[3];
237 u8 vid;
238 u32 alarms;
239 u32 beep_mask;
240 u8 pwm[4];
241 u8 pwm2_enable;
242 u16 sens[3];
243
244
245
246
247 u8 vrm;
248};
249
250static struct w83781d_data *w83781d_data_if_isa(void);
251static int w83781d_alias_detect(struct i2c_client *client, u8 chipid);
252
253static int w83781d_read_value(struct w83781d_data *data, u16 reg);
254static int w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value);
255static struct w83781d_data *w83781d_update_device(struct device *dev);
256static void w83781d_init_device(struct device *dev);
257
258
259#define show_in_reg(reg) \
260static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \
261 char *buf) \
262{ \
263 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
264 struct w83781d_data *data = w83781d_update_device(dev); \
265 return sprintf(buf, "%ld\n", \
266 (long)IN_FROM_REG(data->reg[attr->index])); \
267}
268show_in_reg(in);
269show_in_reg(in_min);
270show_in_reg(in_max);
271
272#define store_in_reg(REG, reg) \
273static ssize_t store_in_##reg(struct device *dev, struct device_attribute \
274 *da, const char *buf, size_t count) \
275{ \
276 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
277 struct w83781d_data *data = dev_get_drvdata(dev); \
278 int nr = attr->index; \
279 unsigned long val; \
280 int err = kstrtoul(buf, 10, &val); \
281 if (err) \
282 return err; \
283 mutex_lock(&data->update_lock); \
284 data->in_##reg[nr] = IN_TO_REG(val); \
285 w83781d_write_value(data, W83781D_REG_IN_##REG(nr), \
286 data->in_##reg[nr]); \
287 \
288 mutex_unlock(&data->update_lock); \
289 return count; \
290}
291store_in_reg(MIN, min);
292store_in_reg(MAX, max);
293
294#define sysfs_in_offsets(offset) \
295static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
296 show_in, NULL, offset); \
297static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
298 show_in_min, store_in_min, offset); \
299static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
300 show_in_max, store_in_max, offset)
301
302sysfs_in_offsets(0);
303sysfs_in_offsets(1);
304sysfs_in_offsets(2);
305sysfs_in_offsets(3);
306sysfs_in_offsets(4);
307sysfs_in_offsets(5);
308sysfs_in_offsets(6);
309sysfs_in_offsets(7);
310sysfs_in_offsets(8);
311
312#define show_fan_reg(reg) \
313static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \
314 char *buf) \
315{ \
316 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
317 struct w83781d_data *data = w83781d_update_device(dev); \
318 return sprintf(buf, "%ld\n", \
319 FAN_FROM_REG(data->reg[attr->index], \
320 DIV_FROM_REG(data->fan_div[attr->index]))); \
321}
322show_fan_reg(fan);
323show_fan_reg(fan_min);
324
325static ssize_t
326store_fan_min(struct device *dev, struct device_attribute *da,
327 const char *buf, size_t count)
328{
329 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
330 struct w83781d_data *data = dev_get_drvdata(dev);
331 int nr = attr->index;
332 unsigned long val;
333 int err;
334
335 err = kstrtoul(buf, 10, &val);
336 if (err)
337 return err;
338
339 mutex_lock(&data->update_lock);
340 data->fan_min[nr] =
341 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
342 w83781d_write_value(data, W83781D_REG_FAN_MIN(nr),
343 data->fan_min[nr]);
344
345 mutex_unlock(&data->update_lock);
346 return count;
347}
348
349static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
350static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
351 show_fan_min, store_fan_min, 0);
352static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
353static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
354 show_fan_min, store_fan_min, 1);
355static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
356static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO | S_IWUSR,
357 show_fan_min, store_fan_min, 2);
358
359#define show_temp_reg(reg) \
360static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \
361 char *buf) \
362{ \
363 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
364 struct w83781d_data *data = w83781d_update_device(dev); \
365 int nr = attr->index; \
366 if (nr >= 2) { \
367 return sprintf(buf, "%d\n", \
368 LM75_TEMP_FROM_REG(data->reg##_add[nr-2])); \
369 } else { \
370 return sprintf(buf, "%ld\n", (long)TEMP_FROM_REG(data->reg)); \
371 } \
372}
373show_temp_reg(temp);
374show_temp_reg(temp_max);
375show_temp_reg(temp_max_hyst);
376
377#define store_temp_reg(REG, reg) \
378static ssize_t store_temp_##reg(struct device *dev, \
379 struct device_attribute *da, const char *buf, size_t count) \
380{ \
381 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
382 struct w83781d_data *data = dev_get_drvdata(dev); \
383 int nr = attr->index; \
384 long val; \
385 int err = kstrtol(buf, 10, &val); \
386 if (err) \
387 return err; \
388 mutex_lock(&data->update_lock); \
389 \
390 if (nr >= 2) { \
391 data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \
392 w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
393 data->temp_##reg##_add[nr-2]); \
394 } else { \
395 data->temp_##reg = TEMP_TO_REG(val); \
396 w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
397 data->temp_##reg); \
398 } \
399 \
400 mutex_unlock(&data->update_lock); \
401 return count; \
402}
403store_temp_reg(OVER, max);
404store_temp_reg(HYST, max_hyst);
405
406#define sysfs_temp_offsets(offset) \
407static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
408 show_temp, NULL, offset); \
409static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
410 show_temp_max, store_temp_max, offset); \
411static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \
412 show_temp_max_hyst, store_temp_max_hyst, offset);
413
414sysfs_temp_offsets(1);
415sysfs_temp_offsets(2);
416sysfs_temp_offsets(3);
417
418static ssize_t
419cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf)
420{
421 struct w83781d_data *data = w83781d_update_device(dev);
422 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
423}
424
425static DEVICE_ATTR_RO(cpu0_vid);
426
427static ssize_t
428vrm_show(struct device *dev, struct device_attribute *attr, char *buf)
429{
430 struct w83781d_data *data = dev_get_drvdata(dev);
431 return sprintf(buf, "%ld\n", (long) data->vrm);
432}
433
434static ssize_t
435vrm_store(struct device *dev, struct device_attribute *attr, const char *buf,
436 size_t count)
437{
438 struct w83781d_data *data = dev_get_drvdata(dev);
439 unsigned long val;
440 int err;
441
442 err = kstrtoul(buf, 10, &val);
443 if (err)
444 return err;
445 data->vrm = clamp_val(val, 0, 255);
446
447 return count;
448}
449
450static DEVICE_ATTR_RW(vrm);
451
452static ssize_t
453alarms_show(struct device *dev, struct device_attribute *attr, char *buf)
454{
455 struct w83781d_data *data = w83781d_update_device(dev);
456 return sprintf(buf, "%u\n", data->alarms);
457}
458
459static DEVICE_ATTR_RO(alarms);
460
461static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
462 char *buf)
463{
464 struct w83781d_data *data = w83781d_update_device(dev);
465 int bitnr = to_sensor_dev_attr(attr)->index;
466 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
467}
468
469
470static ssize_t show_temp3_alarm(struct device *dev,
471 struct device_attribute *attr, char *buf)
472{
473 struct w83781d_data *data = w83781d_update_device(dev);
474 int bitnr = (data->type == w83781d) ? 5 : 13;
475 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
476}
477
478static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
479static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
480static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
481static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
482static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
483static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9);
484static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10);
485static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16);
486static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17);
487static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
488static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
489static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11);
490static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
491static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
492static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_temp3_alarm, NULL, 0);
493
494static ssize_t beep_mask_show(struct device *dev,
495 struct device_attribute *attr, char *buf)
496{
497 struct w83781d_data *data = w83781d_update_device(dev);
498 return sprintf(buf, "%ld\n",
499 (long)BEEP_MASK_FROM_REG(data->beep_mask, data->type));
500}
501
502static ssize_t
503beep_mask_store(struct device *dev, struct device_attribute *attr,
504 const char *buf, size_t count)
505{
506 struct w83781d_data *data = dev_get_drvdata(dev);
507 unsigned long val;
508 int err;
509
510 err = kstrtoul(buf, 10, &val);
511 if (err)
512 return err;
513
514 mutex_lock(&data->update_lock);
515 data->beep_mask &= 0x8000;
516 data->beep_mask |= BEEP_MASK_TO_REG(val, data->type);
517 w83781d_write_value(data, W83781D_REG_BEEP_INTS1,
518 data->beep_mask & 0xff);
519 w83781d_write_value(data, W83781D_REG_BEEP_INTS2,
520 (data->beep_mask >> 8) & 0xff);
521 if (data->type != w83781d && data->type != as99127f) {
522 w83781d_write_value(data, W83781D_REG_BEEP_INTS3,
523 ((data->beep_mask) >> 16) & 0xff);
524 }
525 mutex_unlock(&data->update_lock);
526
527 return count;
528}
529
530static DEVICE_ATTR_RW(beep_mask);
531
532static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
533 char *buf)
534{
535 struct w83781d_data *data = w83781d_update_device(dev);
536 int bitnr = to_sensor_dev_attr(attr)->index;
537 return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
538}
539
540static ssize_t
541store_beep(struct device *dev, struct device_attribute *attr,
542 const char *buf, size_t count)
543{
544 struct w83781d_data *data = dev_get_drvdata(dev);
545 int bitnr = to_sensor_dev_attr(attr)->index;
546 u8 reg;
547 unsigned long bit;
548 int err;
549
550 err = kstrtoul(buf, 10, &bit);
551 if (err)
552 return err;
553
554 if (bit & ~1)
555 return -EINVAL;
556
557 mutex_lock(&data->update_lock);
558 if (bit)
559 data->beep_mask |= (1 << bitnr);
560 else
561 data->beep_mask &= ~(1 << bitnr);
562
563 if (bitnr < 8) {
564 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
565 if (bit)
566 reg |= (1 << bitnr);
567 else
568 reg &= ~(1 << bitnr);
569 w83781d_write_value(data, W83781D_REG_BEEP_INTS1, reg);
570 } else if (bitnr < 16) {
571 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
572 if (bit)
573 reg |= (1 << (bitnr - 8));
574 else
575 reg &= ~(1 << (bitnr - 8));
576 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, reg);
577 } else {
578 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS3);
579 if (bit)
580 reg |= (1 << (bitnr - 16));
581 else
582 reg &= ~(1 << (bitnr - 16));
583 w83781d_write_value(data, W83781D_REG_BEEP_INTS3, reg);
584 }
585 mutex_unlock(&data->update_lock);
586
587 return count;
588}
589
590
591static ssize_t show_temp3_beep(struct device *dev,
592 struct device_attribute *attr, char *buf)
593{
594 struct w83781d_data *data = w83781d_update_device(dev);
595 int bitnr = (data->type == w83781d) ? 5 : 13;
596 return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
597}
598
599static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
600 show_beep, store_beep, 0);
601static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR,
602 show_beep, store_beep, 1);
603static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR,
604 show_beep, store_beep, 2);
605static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR,
606 show_beep, store_beep, 3);
607static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR,
608 show_beep, store_beep, 8);
609static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO | S_IWUSR,
610 show_beep, store_beep, 9);
611static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO | S_IWUSR,
612 show_beep, store_beep, 10);
613static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO | S_IWUSR,
614 show_beep, store_beep, 16);
615static SENSOR_DEVICE_ATTR(in8_beep, S_IRUGO | S_IWUSR,
616 show_beep, store_beep, 17);
617static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR,
618 show_beep, store_beep, 6);
619static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR,
620 show_beep, store_beep, 7);
621static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO | S_IWUSR,
622 show_beep, store_beep, 11);
623static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
624 show_beep, store_beep, 4);
625static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR,
626 show_beep, store_beep, 5);
627static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO,
628 show_temp3_beep, store_beep, 13);
629static SENSOR_DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
630 show_beep, store_beep, 15);
631
632static ssize_t
633show_fan_div(struct device *dev, struct device_attribute *da, char *buf)
634{
635 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
636 struct w83781d_data *data = w83781d_update_device(dev);
637 return sprintf(buf, "%ld\n",
638 (long) DIV_FROM_REG(data->fan_div[attr->index]));
639}
640
641
642
643
644
645
646
647static ssize_t
648store_fan_div(struct device *dev, struct device_attribute *da,
649 const char *buf, size_t count)
650{
651 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
652 struct w83781d_data *data = dev_get_drvdata(dev);
653 unsigned long min;
654 int nr = attr->index;
655 u8 reg;
656 unsigned long val;
657 int err;
658
659 err = kstrtoul(buf, 10, &val);
660 if (err)
661 return err;
662
663 mutex_lock(&data->update_lock);
664
665
666 min = FAN_FROM_REG(data->fan_min[nr],
667 DIV_FROM_REG(data->fan_div[nr]));
668
669 data->fan_div[nr] = DIV_TO_REG(val, data->type);
670
671 reg = (w83781d_read_value(data, nr == 2 ?
672 W83781D_REG_PIN : W83781D_REG_VID_FANDIV)
673 & (nr == 0 ? 0xcf : 0x3f))
674 | ((data->fan_div[nr] & 0x03) << (nr == 0 ? 4 : 6));
675 w83781d_write_value(data, nr == 2 ?
676 W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg);
677
678
679 if (data->type != w83781d && data->type != as99127f) {
680 reg = (w83781d_read_value(data, W83781D_REG_VBAT)
681 & ~(1 << (5 + nr)))
682 | ((data->fan_div[nr] & 0x04) << (3 + nr));
683 w83781d_write_value(data, W83781D_REG_VBAT, reg);
684 }
685
686
687 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
688 w83781d_write_value(data, W83781D_REG_FAN_MIN(nr), data->fan_min[nr]);
689
690 mutex_unlock(&data->update_lock);
691 return count;
692}
693
694static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
695 show_fan_div, store_fan_div, 0);
696static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
697 show_fan_div, store_fan_div, 1);
698static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR,
699 show_fan_div, store_fan_div, 2);
700
701static ssize_t
702show_pwm(struct device *dev, struct device_attribute *da, char *buf)
703{
704 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
705 struct w83781d_data *data = w83781d_update_device(dev);
706 return sprintf(buf, "%d\n", (int)data->pwm[attr->index]);
707}
708
709static ssize_t
710pwm2_enable_show(struct device *dev, struct device_attribute *da, char *buf)
711{
712 struct w83781d_data *data = w83781d_update_device(dev);
713 return sprintf(buf, "%d\n", (int)data->pwm2_enable);
714}
715
716static ssize_t
717store_pwm(struct device *dev, struct device_attribute *da, const char *buf,
718 size_t count)
719{
720 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
721 struct w83781d_data *data = dev_get_drvdata(dev);
722 int nr = attr->index;
723 unsigned long val;
724 int err;
725
726 err = kstrtoul(buf, 10, &val);
727 if (err)
728 return err;
729
730 mutex_lock(&data->update_lock);
731 data->pwm[nr] = clamp_val(val, 0, 255);
732 w83781d_write_value(data, W83781D_REG_PWM[nr], data->pwm[nr]);
733 mutex_unlock(&data->update_lock);
734 return count;
735}
736
737static ssize_t
738pwm2_enable_store(struct device *dev, struct device_attribute *da,
739 const char *buf, size_t count)
740{
741 struct w83781d_data *data = dev_get_drvdata(dev);
742 unsigned long val;
743 u32 reg;
744 int err;
745
746 err = kstrtoul(buf, 10, &val);
747 if (err)
748 return err;
749
750 mutex_lock(&data->update_lock);
751
752 switch (val) {
753 case 0:
754 case 1:
755 reg = w83781d_read_value(data, W83781D_REG_PWMCLK12);
756 w83781d_write_value(data, W83781D_REG_PWMCLK12,
757 (reg & 0xf7) | (val << 3));
758
759 reg = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
760 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG,
761 (reg & 0xef) | (!val << 4));
762
763 data->pwm2_enable = val;
764 break;
765
766 default:
767 mutex_unlock(&data->update_lock);
768 return -EINVAL;
769 }
770
771 mutex_unlock(&data->update_lock);
772 return count;
773}
774
775static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 0);
776static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 1);
777static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 2);
778static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 3);
779
780static DEVICE_ATTR_RW(pwm2_enable);
781
782static ssize_t
783show_sensor(struct device *dev, struct device_attribute *da, char *buf)
784{
785 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
786 struct w83781d_data *data = w83781d_update_device(dev);
787 return sprintf(buf, "%d\n", (int)data->sens[attr->index]);
788}
789
790static ssize_t
791store_sensor(struct device *dev, struct device_attribute *da,
792 const char *buf, size_t count)
793{
794 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
795 struct w83781d_data *data = dev_get_drvdata(dev);
796 int nr = attr->index;
797 unsigned long val;
798 u32 tmp;
799 int err;
800
801 err = kstrtoul(buf, 10, &val);
802 if (err)
803 return err;
804
805 mutex_lock(&data->update_lock);
806
807 switch (val) {
808 case 1:
809 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
810 w83781d_write_value(data, W83781D_REG_SCFG1,
811 tmp | BIT_SCFG1[nr]);
812 tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
813 w83781d_write_value(data, W83781D_REG_SCFG2,
814 tmp | BIT_SCFG2[nr]);
815 data->sens[nr] = val;
816 break;
817 case 2:
818 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
819 w83781d_write_value(data, W83781D_REG_SCFG1,
820 tmp | BIT_SCFG1[nr]);
821 tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
822 w83781d_write_value(data, W83781D_REG_SCFG2,
823 tmp & ~BIT_SCFG2[nr]);
824 data->sens[nr] = val;
825 break;
826 case W83781D_DEFAULT_BETA:
827 dev_warn(dev,
828 "Sensor type %d is deprecated, please use 4 instead\n",
829 W83781D_DEFAULT_BETA);
830
831 case 4:
832 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
833 w83781d_write_value(data, W83781D_REG_SCFG1,
834 tmp & ~BIT_SCFG1[nr]);
835 data->sens[nr] = val;
836 break;
837 default:
838 dev_err(dev, "Invalid sensor type %ld; must be 1, 2, or 4\n",
839 (long) val);
840 break;
841 }
842
843 mutex_unlock(&data->update_lock);
844 return count;
845}
846
847static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR,
848 show_sensor, store_sensor, 0);
849static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR,
850 show_sensor, store_sensor, 1);
851static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR,
852 show_sensor, store_sensor, 2);
853
854
855
856
857
858static int
859w83781d_detect_subclients(struct i2c_client *new_client)
860{
861 int i, val1 = 0, id;
862 int err;
863 int address = new_client->addr;
864 unsigned short sc_addr[2];
865 struct i2c_adapter *adapter = new_client->adapter;
866 struct w83781d_data *data = i2c_get_clientdata(new_client);
867 enum chips kind = data->type;
868 int num_sc = 1;
869
870 id = i2c_adapter_id(adapter);
871
872 if (force_subclients[0] == id && force_subclients[1] == address) {
873 for (i = 2; i <= 3; i++) {
874 if (force_subclients[i] < 0x48 ||
875 force_subclients[i] > 0x4f) {
876 dev_err(&new_client->dev,
877 "Invalid subclient address %d; must be 0x48-0x4f\n",
878 force_subclients[i]);
879 err = -EINVAL;
880 goto ERROR_SC_1;
881 }
882 }
883 w83781d_write_value(data, W83781D_REG_I2C_SUBADDR,
884 (force_subclients[2] & 0x07) |
885 ((force_subclients[3] & 0x07) << 4));
886 sc_addr[0] = force_subclients[2];
887 } else {
888 val1 = w83781d_read_value(data, W83781D_REG_I2C_SUBADDR);
889 sc_addr[0] = 0x48 + (val1 & 0x07);
890 }
891
892 if (kind != w83783s) {
893 num_sc = 2;
894 if (force_subclients[0] == id &&
895 force_subclients[1] == address) {
896 sc_addr[1] = force_subclients[3];
897 } else {
898 sc_addr[1] = 0x48 + ((val1 >> 4) & 0x07);
899 }
900 if (sc_addr[0] == sc_addr[1]) {
901 dev_err(&new_client->dev,
902 "Duplicate addresses 0x%x for subclients.\n",
903 sc_addr[0]);
904 err = -EBUSY;
905 goto ERROR_SC_2;
906 }
907 }
908
909 for (i = 0; i < num_sc; i++) {
910 data->lm75[i] = i2c_new_dummy(adapter, sc_addr[i]);
911 if (!data->lm75[i]) {
912 dev_err(&new_client->dev,
913 "Subclient %d registration at address 0x%x failed.\n",
914 i, sc_addr[i]);
915 err = -ENOMEM;
916 if (i == 1)
917 goto ERROR_SC_3;
918 goto ERROR_SC_2;
919 }
920 }
921
922 return 0;
923
924
925ERROR_SC_3:
926 i2c_unregister_device(data->lm75[0]);
927ERROR_SC_2:
928ERROR_SC_1:
929 return err;
930}
931
932#define IN_UNIT_ATTRS(X) \
933 &sensor_dev_attr_in##X##_input.dev_attr.attr, \
934 &sensor_dev_attr_in##X##_min.dev_attr.attr, \
935 &sensor_dev_attr_in##X##_max.dev_attr.attr, \
936 &sensor_dev_attr_in##X##_alarm.dev_attr.attr, \
937 &sensor_dev_attr_in##X##_beep.dev_attr.attr
938
939#define FAN_UNIT_ATTRS(X) \
940 &sensor_dev_attr_fan##X##_input.dev_attr.attr, \
941 &sensor_dev_attr_fan##X##_min.dev_attr.attr, \
942 &sensor_dev_attr_fan##X##_div.dev_attr.attr, \
943 &sensor_dev_attr_fan##X##_alarm.dev_attr.attr, \
944 &sensor_dev_attr_fan##X##_beep.dev_attr.attr
945
946#define TEMP_UNIT_ATTRS(X) \
947 &sensor_dev_attr_temp##X##_input.dev_attr.attr, \
948 &sensor_dev_attr_temp##X##_max.dev_attr.attr, \
949 &sensor_dev_attr_temp##X##_max_hyst.dev_attr.attr, \
950 &sensor_dev_attr_temp##X##_alarm.dev_attr.attr, \
951 &sensor_dev_attr_temp##X##_beep.dev_attr.attr
952
953static struct attribute *w83781d_attributes[] = {
954 IN_UNIT_ATTRS(0),
955 IN_UNIT_ATTRS(2),
956 IN_UNIT_ATTRS(3),
957 IN_UNIT_ATTRS(4),
958 IN_UNIT_ATTRS(5),
959 IN_UNIT_ATTRS(6),
960 FAN_UNIT_ATTRS(1),
961 FAN_UNIT_ATTRS(2),
962 FAN_UNIT_ATTRS(3),
963 TEMP_UNIT_ATTRS(1),
964 TEMP_UNIT_ATTRS(2),
965 &dev_attr_cpu0_vid.attr,
966 &dev_attr_vrm.attr,
967 &dev_attr_alarms.attr,
968 &dev_attr_beep_mask.attr,
969 &sensor_dev_attr_beep_enable.dev_attr.attr,
970 NULL
971};
972static const struct attribute_group w83781d_group = {
973 .attrs = w83781d_attributes,
974};
975
976static struct attribute *w83781d_attributes_in1[] = {
977 IN_UNIT_ATTRS(1),
978 NULL
979};
980static const struct attribute_group w83781d_group_in1 = {
981 .attrs = w83781d_attributes_in1,
982};
983
984static struct attribute *w83781d_attributes_in78[] = {
985 IN_UNIT_ATTRS(7),
986 IN_UNIT_ATTRS(8),
987 NULL
988};
989static const struct attribute_group w83781d_group_in78 = {
990 .attrs = w83781d_attributes_in78,
991};
992
993static struct attribute *w83781d_attributes_temp3[] = {
994 TEMP_UNIT_ATTRS(3),
995 NULL
996};
997static const struct attribute_group w83781d_group_temp3 = {
998 .attrs = w83781d_attributes_temp3,
999};
1000
1001static struct attribute *w83781d_attributes_pwm12[] = {
1002 &sensor_dev_attr_pwm1.dev_attr.attr,
1003 &sensor_dev_attr_pwm2.dev_attr.attr,
1004 &dev_attr_pwm2_enable.attr,
1005 NULL
1006};
1007static const struct attribute_group w83781d_group_pwm12 = {
1008 .attrs = w83781d_attributes_pwm12,
1009};
1010
1011static struct attribute *w83781d_attributes_pwm34[] = {
1012 &sensor_dev_attr_pwm3.dev_attr.attr,
1013 &sensor_dev_attr_pwm4.dev_attr.attr,
1014 NULL
1015};
1016static const struct attribute_group w83781d_group_pwm34 = {
1017 .attrs = w83781d_attributes_pwm34,
1018};
1019
1020static struct attribute *w83781d_attributes_other[] = {
1021 &sensor_dev_attr_temp1_type.dev_attr.attr,
1022 &sensor_dev_attr_temp2_type.dev_attr.attr,
1023 &sensor_dev_attr_temp3_type.dev_attr.attr,
1024 NULL
1025};
1026static const struct attribute_group w83781d_group_other = {
1027 .attrs = w83781d_attributes_other,
1028};
1029
1030
1031static int
1032w83781d_create_files(struct device *dev, int kind, int is_isa)
1033{
1034 int err;
1035
1036 err = sysfs_create_group(&dev->kobj, &w83781d_group);
1037 if (err)
1038 return err;
1039
1040 if (kind != w83783s) {
1041 err = sysfs_create_group(&dev->kobj, &w83781d_group_in1);
1042 if (err)
1043 return err;
1044 }
1045 if (kind != as99127f && kind != w83781d && kind != w83783s) {
1046 err = sysfs_create_group(&dev->kobj, &w83781d_group_in78);
1047 if (err)
1048 return err;
1049 }
1050 if (kind != w83783s) {
1051 err = sysfs_create_group(&dev->kobj, &w83781d_group_temp3);
1052 if (err)
1053 return err;
1054
1055 if (kind != w83781d) {
1056 err = sysfs_chmod_file(&dev->kobj,
1057 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1058 S_IRUGO | S_IWUSR);
1059 if (err)
1060 return err;
1061 }
1062 }
1063
1064 if (kind != w83781d && kind != as99127f) {
1065 err = sysfs_create_group(&dev->kobj, &w83781d_group_pwm12);
1066 if (err)
1067 return err;
1068 }
1069 if (kind == w83782d && !is_isa) {
1070 err = sysfs_create_group(&dev->kobj, &w83781d_group_pwm34);
1071 if (err)
1072 return err;
1073 }
1074
1075 if (kind != as99127f && kind != w83781d) {
1076 err = device_create_file(dev,
1077 &sensor_dev_attr_temp1_type.dev_attr);
1078 if (err)
1079 return err;
1080 err = device_create_file(dev,
1081 &sensor_dev_attr_temp2_type.dev_attr);
1082 if (err)
1083 return err;
1084 if (kind != w83783s) {
1085 err = device_create_file(dev,
1086 &sensor_dev_attr_temp3_type.dev_attr);
1087 if (err)
1088 return err;
1089 }
1090 }
1091
1092 return 0;
1093}
1094
1095
1096static int
1097w83781d_detect(struct i2c_client *client, struct i2c_board_info *info)
1098{
1099 int val1, val2;
1100 struct w83781d_data *isa = w83781d_data_if_isa();
1101 struct i2c_adapter *adapter = client->adapter;
1102 int address = client->addr;
1103 const char *client_name;
1104 enum vendor { winbond, asus } vendid;
1105
1106 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1107 return -ENODEV;
1108
1109
1110
1111
1112
1113
1114 if (isa)
1115 mutex_lock(&isa->update_lock);
1116
1117 if (i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG) & 0x80) {
1118 dev_dbg(&adapter->dev,
1119 "Detection of w83781d chip failed at step 3\n");
1120 goto err_nodev;
1121 }
1122
1123 val1 = i2c_smbus_read_byte_data(client, W83781D_REG_BANK);
1124 val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN);
1125
1126 if (!(val1 & 0x07) &&
1127 ((!(val1 & 0x80) && val2 != 0xa3 && val2 != 0xc3) ||
1128 ((val1 & 0x80) && val2 != 0x5c && val2 != 0x12))) {
1129 dev_dbg(&adapter->dev,
1130 "Detection of w83781d chip failed at step 4\n");
1131 goto err_nodev;
1132 }
1133
1134
1135
1136
1137 if ((!(val1 & 0x80) && val2 == 0xa3) ||
1138 ((val1 & 0x80) && val2 == 0x5c)) {
1139 if (i2c_smbus_read_byte_data(client, W83781D_REG_I2C_ADDR)
1140 != address) {
1141 dev_dbg(&adapter->dev,
1142 "Detection of w83781d chip failed at step 5\n");
1143 goto err_nodev;
1144 }
1145 }
1146
1147
1148 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1149 (i2c_smbus_read_byte_data(client, W83781D_REG_BANK)
1150 & 0x78) | 0x80);
1151
1152
1153 val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN);
1154 if (val2 == 0x5c)
1155 vendid = winbond;
1156 else if (val2 == 0x12)
1157 vendid = asus;
1158 else {
1159 dev_dbg(&adapter->dev,
1160 "w83781d chip vendor is neither Winbond nor Asus\n");
1161 goto err_nodev;
1162 }
1163
1164
1165 val1 = i2c_smbus_read_byte_data(client, W83781D_REG_WCHIPID);
1166 if ((val1 == 0x10 || val1 == 0x11) && vendid == winbond)
1167 client_name = "w83781d";
1168 else if (val1 == 0x30 && vendid == winbond)
1169 client_name = "w83782d";
1170 else if (val1 == 0x40 && vendid == winbond && address == 0x2d)
1171 client_name = "w83783s";
1172 else if (val1 == 0x31)
1173 client_name = "as99127f";
1174 else
1175 goto err_nodev;
1176
1177 if (val1 <= 0x30 && w83781d_alias_detect(client, val1)) {
1178 dev_dbg(&adapter->dev,
1179 "Device at 0x%02x appears to be the same as ISA device\n",
1180 address);
1181 goto err_nodev;
1182 }
1183
1184 if (isa)
1185 mutex_unlock(&isa->update_lock);
1186
1187 strlcpy(info->type, client_name, I2C_NAME_SIZE);
1188
1189 return 0;
1190
1191 err_nodev:
1192 if (isa)
1193 mutex_unlock(&isa->update_lock);
1194 return -ENODEV;
1195}
1196
1197static void w83781d_remove_files(struct device *dev)
1198{
1199 sysfs_remove_group(&dev->kobj, &w83781d_group);
1200 sysfs_remove_group(&dev->kobj, &w83781d_group_in1);
1201 sysfs_remove_group(&dev->kobj, &w83781d_group_in78);
1202 sysfs_remove_group(&dev->kobj, &w83781d_group_temp3);
1203 sysfs_remove_group(&dev->kobj, &w83781d_group_pwm12);
1204 sysfs_remove_group(&dev->kobj, &w83781d_group_pwm34);
1205 sysfs_remove_group(&dev->kobj, &w83781d_group_other);
1206}
1207
1208static int
1209w83781d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1210{
1211 struct device *dev = &client->dev;
1212 struct w83781d_data *data;
1213 int err;
1214
1215 data = devm_kzalloc(dev, sizeof(struct w83781d_data), GFP_KERNEL);
1216 if (!data)
1217 return -ENOMEM;
1218
1219 i2c_set_clientdata(client, data);
1220 mutex_init(&data->lock);
1221 mutex_init(&data->update_lock);
1222
1223 data->type = id->driver_data;
1224 data->client = client;
1225
1226
1227 err = w83781d_detect_subclients(client);
1228 if (err)
1229 return err;
1230
1231
1232 w83781d_init_device(dev);
1233
1234
1235 err = w83781d_create_files(dev, data->type, 0);
1236 if (err)
1237 goto exit_remove_files;
1238
1239 data->hwmon_dev = hwmon_device_register(dev);
1240 if (IS_ERR(data->hwmon_dev)) {
1241 err = PTR_ERR(data->hwmon_dev);
1242 goto exit_remove_files;
1243 }
1244
1245 return 0;
1246
1247 exit_remove_files:
1248 w83781d_remove_files(dev);
1249 if (data->lm75[0])
1250 i2c_unregister_device(data->lm75[0]);
1251 if (data->lm75[1])
1252 i2c_unregister_device(data->lm75[1]);
1253 return err;
1254}
1255
1256static int
1257w83781d_remove(struct i2c_client *client)
1258{
1259 struct w83781d_data *data = i2c_get_clientdata(client);
1260 struct device *dev = &client->dev;
1261
1262 hwmon_device_unregister(data->hwmon_dev);
1263 w83781d_remove_files(dev);
1264
1265 if (data->lm75[0])
1266 i2c_unregister_device(data->lm75[0]);
1267 if (data->lm75[1])
1268 i2c_unregister_device(data->lm75[1]);
1269
1270 return 0;
1271}
1272
1273static int
1274w83781d_read_value_i2c(struct w83781d_data *data, u16 reg)
1275{
1276 struct i2c_client *client = data->client;
1277 int res, bank;
1278 struct i2c_client *cl;
1279
1280 bank = (reg >> 8) & 0x0f;
1281 if (bank > 2)
1282
1283 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1284 bank);
1285 if (bank == 0 || bank > 2) {
1286 res = i2c_smbus_read_byte_data(client, reg & 0xff);
1287 } else {
1288
1289 cl = data->lm75[bank - 1];
1290
1291 switch (reg & 0xff) {
1292 case 0x50:
1293 res = i2c_smbus_read_word_swapped(cl, 0);
1294 break;
1295 case 0x52:
1296 res = i2c_smbus_read_byte_data(cl, 1);
1297 break;
1298 case 0x53:
1299 res = i2c_smbus_read_word_swapped(cl, 2);
1300 break;
1301 case 0x55:
1302 default:
1303 res = i2c_smbus_read_word_swapped(cl, 3);
1304 break;
1305 }
1306 }
1307 if (bank > 2)
1308 i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1309
1310 return res;
1311}
1312
1313static int
1314w83781d_write_value_i2c(struct w83781d_data *data, u16 reg, u16 value)
1315{
1316 struct i2c_client *client = data->client;
1317 int bank;
1318 struct i2c_client *cl;
1319
1320 bank = (reg >> 8) & 0x0f;
1321 if (bank > 2)
1322
1323 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1324 bank);
1325 if (bank == 0 || bank > 2) {
1326 i2c_smbus_write_byte_data(client, reg & 0xff,
1327 value & 0xff);
1328 } else {
1329
1330 cl = data->lm75[bank - 1];
1331
1332 switch (reg & 0xff) {
1333 case 0x52:
1334 i2c_smbus_write_byte_data(cl, 1, value & 0xff);
1335 break;
1336 case 0x53:
1337 i2c_smbus_write_word_swapped(cl, 2, value);
1338 break;
1339 case 0x55:
1340 i2c_smbus_write_word_swapped(cl, 3, value);
1341 break;
1342 }
1343 }
1344 if (bank > 2)
1345 i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1346
1347 return 0;
1348}
1349
1350static void
1351w83781d_init_device(struct device *dev)
1352{
1353 struct w83781d_data *data = dev_get_drvdata(dev);
1354 int i, p;
1355 int type = data->type;
1356 u8 tmp;
1357
1358 if (reset && type != as99127f) {
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370 dev_info(dev,
1371 "If reset=1 solved a problem you were having, please report!\n");
1372
1373
1374 i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
1375 p = w83781d_read_value(data, W83781D_REG_PWMCLK12);
1376
1377
1378
1379
1380 w83781d_write_value(data, W83781D_REG_CONFIG, 0x80);
1381
1382
1383
1384
1385 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
1386 w83781d_write_value(data, W83781D_REG_PWMCLK12, p);
1387
1388
1389
1390
1391
1392 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, 0);
1393 }
1394
1395
1396
1397
1398
1399 if (init && !reset && type != as99127f) {
1400 i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
1401 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
1402 }
1403
1404 data->vrm = vid_which_vrm();
1405
1406 if ((type != w83781d) && (type != as99127f)) {
1407 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
1408 for (i = 1; i <= 3; i++) {
1409 if (!(tmp & BIT_SCFG1[i - 1])) {
1410 data->sens[i - 1] = 4;
1411 } else {
1412 if (w83781d_read_value
1413 (data,
1414 W83781D_REG_SCFG2) & BIT_SCFG2[i - 1])
1415 data->sens[i - 1] = 1;
1416 else
1417 data->sens[i - 1] = 2;
1418 }
1419 if (type == w83783s && i == 2)
1420 break;
1421 }
1422 }
1423
1424 if (init && type != as99127f) {
1425
1426 tmp = w83781d_read_value(data, W83781D_REG_TEMP2_CONFIG);
1427 if (tmp & 0x01) {
1428 dev_warn(dev,
1429 "Enabling temp2, readings might not make sense\n");
1430 w83781d_write_value(data, W83781D_REG_TEMP2_CONFIG,
1431 tmp & 0xfe);
1432 }
1433
1434
1435 if (type != w83783s) {
1436 tmp = w83781d_read_value(data,
1437 W83781D_REG_TEMP3_CONFIG);
1438 if (tmp & 0x01) {
1439 dev_warn(dev,
1440 "Enabling temp3, readings might not make sense\n");
1441 w83781d_write_value(data,
1442 W83781D_REG_TEMP3_CONFIG, tmp & 0xfe);
1443 }
1444 }
1445 }
1446
1447
1448 w83781d_write_value(data, W83781D_REG_CONFIG,
1449 (w83781d_read_value(data,
1450 W83781D_REG_CONFIG) & 0xf7)
1451 | 0x01);
1452
1453
1454 for (i = 0; i < 3; i++) {
1455 data->fan_min[i] = w83781d_read_value(data,
1456 W83781D_REG_FAN_MIN(i));
1457 }
1458
1459 mutex_init(&data->update_lock);
1460}
1461
1462static struct w83781d_data *w83781d_update_device(struct device *dev)
1463{
1464 struct w83781d_data *data = dev_get_drvdata(dev);
1465 struct i2c_client *client = data->client;
1466 int i;
1467
1468 mutex_lock(&data->update_lock);
1469
1470 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1471 || !data->valid) {
1472 dev_dbg(dev, "Starting device update\n");
1473
1474 for (i = 0; i <= 8; i++) {
1475 if (data->type == w83783s && i == 1)
1476 continue;
1477 data->in[i] =
1478 w83781d_read_value(data, W83781D_REG_IN(i));
1479 data->in_min[i] =
1480 w83781d_read_value(data, W83781D_REG_IN_MIN(i));
1481 data->in_max[i] =
1482 w83781d_read_value(data, W83781D_REG_IN_MAX(i));
1483 if ((data->type != w83782d) && (i == 6))
1484 break;
1485 }
1486 for (i = 0; i < 3; i++) {
1487 data->fan[i] =
1488 w83781d_read_value(data, W83781D_REG_FAN(i));
1489 data->fan_min[i] =
1490 w83781d_read_value(data, W83781D_REG_FAN_MIN(i));
1491 }
1492 if (data->type != w83781d && data->type != as99127f) {
1493 for (i = 0; i < 4; i++) {
1494 data->pwm[i] =
1495 w83781d_read_value(data,
1496 W83781D_REG_PWM[i]);
1497
1498 if ((data->type != w83782d || !client)
1499 && i == 1)
1500 break;
1501 }
1502
1503 data->pwm2_enable = (w83781d_read_value(data,
1504 W83781D_REG_PWMCLK12) & 0x08) >> 3;
1505 }
1506
1507 data->temp = w83781d_read_value(data, W83781D_REG_TEMP(1));
1508 data->temp_max =
1509 w83781d_read_value(data, W83781D_REG_TEMP_OVER(1));
1510 data->temp_max_hyst =
1511 w83781d_read_value(data, W83781D_REG_TEMP_HYST(1));
1512 data->temp_add[0] =
1513 w83781d_read_value(data, W83781D_REG_TEMP(2));
1514 data->temp_max_add[0] =
1515 w83781d_read_value(data, W83781D_REG_TEMP_OVER(2));
1516 data->temp_max_hyst_add[0] =
1517 w83781d_read_value(data, W83781D_REG_TEMP_HYST(2));
1518 if (data->type != w83783s) {
1519 data->temp_add[1] =
1520 w83781d_read_value(data, W83781D_REG_TEMP(3));
1521 data->temp_max_add[1] =
1522 w83781d_read_value(data,
1523 W83781D_REG_TEMP_OVER(3));
1524 data->temp_max_hyst_add[1] =
1525 w83781d_read_value(data,
1526 W83781D_REG_TEMP_HYST(3));
1527 }
1528 i = w83781d_read_value(data, W83781D_REG_VID_FANDIV);
1529 data->vid = i & 0x0f;
1530 data->vid |= (w83781d_read_value(data,
1531 W83781D_REG_CHIPID) & 0x01) << 4;
1532 data->fan_div[0] = (i >> 4) & 0x03;
1533 data->fan_div[1] = (i >> 6) & 0x03;
1534 data->fan_div[2] = (w83781d_read_value(data,
1535 W83781D_REG_PIN) >> 6) & 0x03;
1536 if ((data->type != w83781d) && (data->type != as99127f)) {
1537 i = w83781d_read_value(data, W83781D_REG_VBAT);
1538 data->fan_div[0] |= (i >> 3) & 0x04;
1539 data->fan_div[1] |= (i >> 4) & 0x04;
1540 data->fan_div[2] |= (i >> 5) & 0x04;
1541 }
1542 if (data->type == w83782d) {
1543 data->alarms = w83781d_read_value(data,
1544 W83782D_REG_ALARM1)
1545 | (w83781d_read_value(data,
1546 W83782D_REG_ALARM2) << 8)
1547 | (w83781d_read_value(data,
1548 W83782D_REG_ALARM3) << 16);
1549 } else if (data->type == w83783s) {
1550 data->alarms = w83781d_read_value(data,
1551 W83782D_REG_ALARM1)
1552 | (w83781d_read_value(data,
1553 W83782D_REG_ALARM2) << 8);
1554 } else {
1555
1556
1557
1558
1559 data->alarms = w83781d_read_value(data,
1560 W83781D_REG_ALARM1)
1561 | (w83781d_read_value(data,
1562 W83781D_REG_ALARM2) << 8);
1563 }
1564 i = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
1565 data->beep_mask = (i << 8) +
1566 w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
1567 if ((data->type != w83781d) && (data->type != as99127f)) {
1568 data->beep_mask |=
1569 w83781d_read_value(data,
1570 W83781D_REG_BEEP_INTS3) << 16;
1571 }
1572 data->last_updated = jiffies;
1573 data->valid = 1;
1574 }
1575
1576 mutex_unlock(&data->update_lock);
1577
1578 return data;
1579}
1580
1581static const struct i2c_device_id w83781d_ids[] = {
1582 { "w83781d", w83781d, },
1583 { "w83782d", w83782d, },
1584 { "w83783s", w83783s, },
1585 { "as99127f", as99127f },
1586 { }
1587};
1588MODULE_DEVICE_TABLE(i2c, w83781d_ids);
1589
1590static struct i2c_driver w83781d_driver = {
1591 .class = I2C_CLASS_HWMON,
1592 .driver = {
1593 .name = "w83781d",
1594 },
1595 .probe = w83781d_probe,
1596 .remove = w83781d_remove,
1597 .id_table = w83781d_ids,
1598 .detect = w83781d_detect,
1599 .address_list = normal_i2c,
1600};
1601
1602
1603
1604
1605#ifdef CONFIG_ISA
1606
1607
1608static struct platform_device *pdev;
1609
1610static unsigned short isa_address = 0x290;
1611
1612
1613
1614
1615
1616static ssize_t
1617name_show(struct device *dev, struct device_attribute *devattr, char *buf)
1618{
1619 struct w83781d_data *data = dev_get_drvdata(dev);
1620 return sprintf(buf, "%s\n", data->name);
1621}
1622static DEVICE_ATTR_RO(name);
1623
1624static struct w83781d_data *w83781d_data_if_isa(void)
1625{
1626 return pdev ? platform_get_drvdata(pdev) : NULL;
1627}
1628
1629
1630static int w83781d_alias_detect(struct i2c_client *client, u8 chipid)
1631{
1632 struct w83781d_data *isa;
1633 int i;
1634
1635 if (!pdev)
1636 return 0;
1637
1638 isa = platform_get_drvdata(pdev);
1639
1640 if (w83781d_read_value(isa, W83781D_REG_I2C_ADDR) != client->addr)
1641 return 0;
1642 if (w83781d_read_value(isa, W83781D_REG_WCHIPID) != chipid)
1643 return 0;
1644
1645
1646
1647
1648
1649 for (i = 0x2b; i <= 0x3d; i++) {
1650 if (w83781d_read_value(isa, i) !=
1651 i2c_smbus_read_byte_data(client, i))
1652 return 0;
1653 }
1654 if (w83781d_read_value(isa, W83781D_REG_CONFIG) !=
1655 i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG))
1656 return 0;
1657 for (i = 0x43; i <= 0x46; i++) {
1658 if (w83781d_read_value(isa, i) !=
1659 i2c_smbus_read_byte_data(client, i))
1660 return 0;
1661 }
1662
1663 return 1;
1664}
1665
1666static int
1667w83781d_read_value_isa(struct w83781d_data *data, u16 reg)
1668{
1669 int word_sized, res;
1670
1671 word_sized = (((reg & 0xff00) == 0x100)
1672 || ((reg & 0xff00) == 0x200))
1673 && (((reg & 0x00ff) == 0x50)
1674 || ((reg & 0x00ff) == 0x53)
1675 || ((reg & 0x00ff) == 0x55));
1676 if (reg & 0xff00) {
1677 outb_p(W83781D_REG_BANK,
1678 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1679 outb_p(reg >> 8,
1680 data->isa_addr + W83781D_DATA_REG_OFFSET);
1681 }
1682 outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET);
1683 res = inb_p(data->isa_addr + W83781D_DATA_REG_OFFSET);
1684 if (word_sized) {
1685 outb_p((reg & 0xff) + 1,
1686 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1687 res =
1688 (res << 8) + inb_p(data->isa_addr +
1689 W83781D_DATA_REG_OFFSET);
1690 }
1691 if (reg & 0xff00) {
1692 outb_p(W83781D_REG_BANK,
1693 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1694 outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET);
1695 }
1696 return res;
1697}
1698
1699static void
1700w83781d_write_value_isa(struct w83781d_data *data, u16 reg, u16 value)
1701{
1702 int word_sized;
1703
1704 word_sized = (((reg & 0xff00) == 0x100)
1705 || ((reg & 0xff00) == 0x200))
1706 && (((reg & 0x00ff) == 0x53)
1707 || ((reg & 0x00ff) == 0x55));
1708 if (reg & 0xff00) {
1709 outb_p(W83781D_REG_BANK,
1710 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1711 outb_p(reg >> 8,
1712 data->isa_addr + W83781D_DATA_REG_OFFSET);
1713 }
1714 outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET);
1715 if (word_sized) {
1716 outb_p(value >> 8,
1717 data->isa_addr + W83781D_DATA_REG_OFFSET);
1718 outb_p((reg & 0xff) + 1,
1719 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1720 }
1721 outb_p(value & 0xff, data->isa_addr + W83781D_DATA_REG_OFFSET);
1722 if (reg & 0xff00) {
1723 outb_p(W83781D_REG_BANK,
1724 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1725 outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET);
1726 }
1727}
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737static int
1738w83781d_read_value(struct w83781d_data *data, u16 reg)
1739{
1740 struct i2c_client *client = data->client;
1741 int res;
1742
1743 mutex_lock(&data->lock);
1744 if (client)
1745 res = w83781d_read_value_i2c(data, reg);
1746 else
1747 res = w83781d_read_value_isa(data, reg);
1748 mutex_unlock(&data->lock);
1749 return res;
1750}
1751
1752static int
1753w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
1754{
1755 struct i2c_client *client = data->client;
1756
1757 mutex_lock(&data->lock);
1758 if (client)
1759 w83781d_write_value_i2c(data, reg, value);
1760 else
1761 w83781d_write_value_isa(data, reg, value);
1762 mutex_unlock(&data->lock);
1763 return 0;
1764}
1765
1766static int
1767w83781d_isa_probe(struct platform_device *pdev)
1768{
1769 int err, reg;
1770 struct w83781d_data *data;
1771 struct resource *res;
1772
1773
1774 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1775 if (!devm_request_region(&pdev->dev,
1776 res->start + W83781D_ADDR_REG_OFFSET, 2,
1777 "w83781d"))
1778 return -EBUSY;
1779
1780 data = devm_kzalloc(&pdev->dev, sizeof(struct w83781d_data),
1781 GFP_KERNEL);
1782 if (!data)
1783 return -ENOMEM;
1784
1785 mutex_init(&data->lock);
1786 data->isa_addr = res->start;
1787 platform_set_drvdata(pdev, data);
1788
1789 reg = w83781d_read_value(data, W83781D_REG_WCHIPID);
1790 switch (reg) {
1791 case 0x30:
1792 data->type = w83782d;
1793 data->name = "w83782d";
1794 break;
1795 default:
1796 data->type = w83781d;
1797 data->name = "w83781d";
1798 }
1799
1800
1801 w83781d_init_device(&pdev->dev);
1802
1803
1804 err = w83781d_create_files(&pdev->dev, data->type, 1);
1805 if (err)
1806 goto exit_remove_files;
1807
1808 err = device_create_file(&pdev->dev, &dev_attr_name);
1809 if (err)
1810 goto exit_remove_files;
1811
1812 data->hwmon_dev = hwmon_device_register(&pdev->dev);
1813 if (IS_ERR(data->hwmon_dev)) {
1814 err = PTR_ERR(data->hwmon_dev);
1815 goto exit_remove_files;
1816 }
1817
1818 return 0;
1819
1820 exit_remove_files:
1821 w83781d_remove_files(&pdev->dev);
1822 device_remove_file(&pdev->dev, &dev_attr_name);
1823 return err;
1824}
1825
1826static int
1827w83781d_isa_remove(struct platform_device *pdev)
1828{
1829 struct w83781d_data *data = platform_get_drvdata(pdev);
1830
1831 hwmon_device_unregister(data->hwmon_dev);
1832 w83781d_remove_files(&pdev->dev);
1833 device_remove_file(&pdev->dev, &dev_attr_name);
1834
1835 return 0;
1836}
1837
1838static struct platform_driver w83781d_isa_driver = {
1839 .driver = {
1840 .name = "w83781d",
1841 },
1842 .probe = w83781d_isa_probe,
1843 .remove = w83781d_isa_remove,
1844};
1845
1846
1847static int __init
1848w83781d_isa_found(unsigned short address)
1849{
1850 int val, save, found = 0;
1851 int port;
1852
1853
1854
1855
1856
1857
1858 for (port = address; port < address + W83781D_EXTENT; port++) {
1859 if (!request_region(port, 1, "w83781d")) {
1860 pr_debug("Failed to request port 0x%x\n", port);
1861 goto release;
1862 }
1863 }
1864
1865#define REALLY_SLOW_IO
1866
1867
1868
1869
1870 val = inb_p(address + 1);
1871 if (inb_p(address + 2) != val
1872 || inb_p(address + 3) != val
1873 || inb_p(address + 7) != val) {
1874 pr_debug("Detection failed at step %d\n", 1);
1875 goto release;
1876 }
1877#undef REALLY_SLOW_IO
1878
1879
1880
1881
1882
1883 save = inb_p(address + W83781D_ADDR_REG_OFFSET);
1884 if (save & 0x80) {
1885 pr_debug("Detection failed at step %d\n", 2);
1886 goto release;
1887 }
1888 val = ~save & 0x7f;
1889 outb_p(val, address + W83781D_ADDR_REG_OFFSET);
1890 if (inb_p(address + W83781D_ADDR_REG_OFFSET) != (val | 0x80)) {
1891 outb_p(save, address + W83781D_ADDR_REG_OFFSET);
1892 pr_debug("Detection failed at step %d\n", 3);
1893 goto release;
1894 }
1895
1896
1897 outb_p(W83781D_REG_CONFIG, address + W83781D_ADDR_REG_OFFSET);
1898 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1899 if (val & 0x80) {
1900 pr_debug("Detection failed at step %d\n", 4);
1901 goto release;
1902 }
1903 outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
1904 save = inb_p(address + W83781D_DATA_REG_OFFSET);
1905 outb_p(W83781D_REG_CHIPMAN, address + W83781D_ADDR_REG_OFFSET);
1906 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1907 if ((!(save & 0x80) && (val != 0xa3))
1908 || ((save & 0x80) && (val != 0x5c))) {
1909 pr_debug("Detection failed at step %d\n", 5);
1910 goto release;
1911 }
1912 outb_p(W83781D_REG_I2C_ADDR, address + W83781D_ADDR_REG_OFFSET);
1913 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1914 if (val < 0x03 || val > 0x77) {
1915 pr_debug("Detection failed at step %d\n", 6);
1916 goto release;
1917 }
1918
1919
1920 if (inb_p(address + W83781D_ADDR_REG_OFFSET) & 0x80) {
1921 pr_debug("Detection failed at step %d\n", 7);
1922 goto release;
1923 }
1924
1925
1926 outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
1927 save = inb_p(address + W83781D_DATA_REG_OFFSET);
1928 outb_p(save & 0xf8, address + W83781D_DATA_REG_OFFSET);
1929 outb_p(W83781D_REG_WCHIPID, address + W83781D_ADDR_REG_OFFSET);
1930 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1931 if ((val & 0xfe) == 0x10
1932 || val == 0x30)
1933 found = 1;
1934
1935 if (found)
1936 pr_info("Found a %s chip at %#x\n",
1937 val == 0x30 ? "W83782D" : "W83781D", (int)address);
1938
1939 release:
1940 for (port--; port >= address; port--)
1941 release_region(port, 1);
1942 return found;
1943}
1944
1945static int __init
1946w83781d_isa_device_add(unsigned short address)
1947{
1948 struct resource res = {
1949 .start = address,
1950 .end = address + W83781D_EXTENT - 1,
1951 .name = "w83781d",
1952 .flags = IORESOURCE_IO,
1953 };
1954 int err;
1955
1956 pdev = platform_device_alloc("w83781d", address);
1957 if (!pdev) {
1958 err = -ENOMEM;
1959 pr_err("Device allocation failed\n");
1960 goto exit;
1961 }
1962
1963 err = platform_device_add_resources(pdev, &res, 1);
1964 if (err) {
1965 pr_err("Device resource addition failed (%d)\n", err);
1966 goto exit_device_put;
1967 }
1968
1969 err = platform_device_add(pdev);
1970 if (err) {
1971 pr_err("Device addition failed (%d)\n", err);
1972 goto exit_device_put;
1973 }
1974
1975 return 0;
1976
1977 exit_device_put:
1978 platform_device_put(pdev);
1979 exit:
1980 pdev = NULL;
1981 return err;
1982}
1983
1984static int __init
1985w83781d_isa_register(void)
1986{
1987 int res;
1988
1989 if (w83781d_isa_found(isa_address)) {
1990 res = platform_driver_register(&w83781d_isa_driver);
1991 if (res)
1992 goto exit;
1993
1994
1995 res = w83781d_isa_device_add(isa_address);
1996 if (res)
1997 goto exit_unreg_isa_driver;
1998 }
1999
2000 return 0;
2001
2002exit_unreg_isa_driver:
2003 platform_driver_unregister(&w83781d_isa_driver);
2004exit:
2005 return res;
2006}
2007
2008static void
2009w83781d_isa_unregister(void)
2010{
2011 if (pdev) {
2012 platform_device_unregister(pdev);
2013 platform_driver_unregister(&w83781d_isa_driver);
2014 }
2015}
2016#else
2017
2018static struct w83781d_data *w83781d_data_if_isa(void)
2019{
2020 return NULL;
2021}
2022
2023static int
2024w83781d_alias_detect(struct i2c_client *client, u8 chipid)
2025{
2026 return 0;
2027}
2028
2029static int
2030w83781d_read_value(struct w83781d_data *data, u16 reg)
2031{
2032 int res;
2033
2034 mutex_lock(&data->lock);
2035 res = w83781d_read_value_i2c(data, reg);
2036 mutex_unlock(&data->lock);
2037
2038 return res;
2039}
2040
2041static int
2042w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
2043{
2044 mutex_lock(&data->lock);
2045 w83781d_write_value_i2c(data, reg, value);
2046 mutex_unlock(&data->lock);
2047
2048 return 0;
2049}
2050
2051static int __init
2052w83781d_isa_register(void)
2053{
2054 return 0;
2055}
2056
2057static void
2058w83781d_isa_unregister(void)
2059{
2060}
2061#endif
2062
2063static int __init
2064sensors_w83781d_init(void)
2065{
2066 int res;
2067
2068
2069
2070
2071
2072 res = w83781d_isa_register();
2073 if (res)
2074 goto exit;
2075
2076 res = i2c_add_driver(&w83781d_driver);
2077 if (res)
2078 goto exit_unreg_isa;
2079
2080 return 0;
2081
2082 exit_unreg_isa:
2083 w83781d_isa_unregister();
2084 exit:
2085 return res;
2086}
2087
2088static void __exit
2089sensors_w83781d_exit(void)
2090{
2091 w83781d_isa_unregister();
2092 i2c_del_driver(&w83781d_driver);
2093}
2094
2095MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
2096 "Philip Edelbrock <phil@netroedge.com>, "
2097 "and Mark Studebaker <mdsxyz123@yahoo.com>");
2098MODULE_DESCRIPTION("W83781D driver");
2099MODULE_LICENSE("GPL");
2100
2101module_init(sensors_w83781d_init);
2102module_exit(sensors_w83781d_exit);
2103
