summaryrefslogtreecommitdiffstats
path: root/drivers/hwmon/f75375s.c
blob: 1464338e4e11b891298ff18f212bf2135c17804a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
/*
 * f75375s.c - driver for the Fintek F75375/SP and F75373
 *             hardware monitoring features
 * Copyright (C) 2006-2007  Riku Voipio <riku.voipio@movial.fi>
 *
 * Datasheets available at:
 *
 * f75375:
 * http://www.fintek.com.tw/files/productfiles/2005111152950.pdf
 *
 * f75373:
 * http://www.fintek.com.tw/files/productfiles/2005111153128.pdf
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/module.h>
#include <linux/jiffies.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/f75375s.h>

/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };

/* Insmod parameters */
I2C_CLIENT_INSMOD_2(f75373, f75375);

/* Fintek F75375 registers  */
#define F75375_REG_CONFIG0		0x0
#define F75375_REG_CONFIG1		0x1
#define F75375_REG_CONFIG2		0x2
#define F75375_REG_CONFIG3		0x3
#define F75375_REG_ADDR			0x4
#define F75375_REG_INTR			0x31
#define F75375_CHIP_ID			0x5A
#define F75375_REG_VERSION		0x5C
#define F75375_REG_VENDOR		0x5D
#define F75375_REG_FAN_TIMER		0x60

#define F75375_REG_VOLT(nr)		(0x10 + (nr))
#define F75375_REG_VOLT_HIGH(nr)	(0x20 + (nr) * 2)
#define F75375_REG_VOLT_LOW(nr)		(0x21 + (nr) * 2)

#define F75375_REG_TEMP(nr)		(0x14 + (nr))
#define F75375_REG_TEMP_HIGH(nr)	(0x28 + (nr) * 2)
#define F75375_REG_TEMP_HYST(nr)	(0x29 + (nr) * 2)

#define F75375_REG_FAN(nr)		(0x16 + (nr) * 2)
#define F75375_REG_FAN_MIN(nr)		(0x2C + (nr) * 2)
#define F75375_REG_FAN_FULL(nr)		(0x70 + (nr) * 0x10)
#define F75375_REG_FAN_PWM_DUTY(nr)	(0x76 + (nr) * 0x10)
#define F75375_REG_FAN_PWM_CLOCK(nr)	(0x7D + (nr) * 0x10)

#define F75375_REG_FAN_EXP(nr)		(0x74 + (nr) * 0x10)
#define F75375_REG_FAN_B_TEMP(nr, step)	((0xA0 + (nr) * 0x10) + (step))
#define F75375_REG_FAN_B_SPEED(nr, step) \
	((0xA5 + (nr) * 0x10) + (step) * 2)

#define F75375_REG_PWM1_RAISE_DUTY	0x69
#define F75375_REG_PWM2_RAISE_DUTY	0x6A
#define F75375_REG_PWM1_DROP_DUTY	0x6B
#define F75375_REG_PWM2_DROP_DUTY	0x6C

#define FAN_CTRL_LINEAR(nr)		(4 + nr)
#define FAN_CTRL_MODE(nr)		(5 + ((nr) * 2))

/*
 * Data structures and manipulation thereof
 */

struct f75375_data {
	unsigned short addr;
	struct i2c_client *client;
	struct device *hwmon_dev;

	const char *name;
	int kind;
	struct mutex update_lock; /* protect register access */
	char valid;
	unsigned long last_updated;	/* In jiffies */
	unsigned long last_limits;	/* In jiffies */

	/* Register values */
	u8 in[4];
	u8 in_max[4];
	u8 in_min[4];
	u16 fan[2];
	u16 fan_min[2];
	u16 fan_full[2];
	u16 fan_exp[2];
	u8 fan_timer;
	u8 pwm[2];
	u8 pwm_mode[2];
	u8 pwm_enable[2];
	s8 temp[2];
	s8 temp_high[2];
	s8 temp_max_hyst[2];
};

static int f75375_attach_adapter(struct i2c_adapter *adapter);
static int f75375_detect(struct i2c_adapter *adapter, int address, int kind);
static int f75375_detach_client(struct i2c_client *client);
static int f75375_probe(struct i2c_client *client);
static int f75375_remove(struct i2c_client *client);

static struct i2c_driver f75375_legacy_driver = {
	.driver = {
		.name = "f75375_legacy",
	},
	.attach_adapter = f75375_attach_adapter,
	.detach_client = f75375_detach_client,
};

static struct i2c_driver f75375_driver = {
	.driver = {
		.name = "f75375",
	},
	.probe = f75375_probe,
	.remove = f75375_remove,
};

static inline int f75375_read8(struct i2c_client *client, u8 reg)
{
	return i2c_smbus_read_byte_data(client, reg);
}

/* in most cases, should be called while holding update_lock */
static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
{
	return ((i2c_smbus_read_byte_data(client, reg) << 8)
		| i2c_smbus_read_byte_data(client, reg + 1));
}

static inline void f75375_write8(struct i2c_client *client, u8 reg,
		u8 value)
{
	i2c_smbus_write_byte_data(client, reg, value);
}

static inline void f75375_write16(struct i2c_client *client, u8 reg,
		u16 value)
{
	int err = i2c_smbus_write_byte_data(client, reg, (value << 8));
	if (err)
		return;
	i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
}

static struct f75375_data *f75375_update_device(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct f75375_data *data = i2c_get_clientdata(client);
	int nr;

	mutex_lock(&data->update_lock);

	/* Limit registers cache is refreshed after 60 seconds */
	if (time_after(jiffies, data->last_limits + 60 * HZ)
		|| !data->valid) {
		for (nr = 0; nr < 2; nr++) {
			data->temp_high[nr] =
				f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
			data->temp_max_hyst[nr] =
				f75375_read8(client, F75375_REG_TEMP_HYST(nr));
			data->fan_full[nr] =
				f75375_read16(client, F75375_REG_FAN_FULL(nr));
			data->fan_min[nr] =
				f75375_read16(client, F75375_REG_FAN_MIN(nr));
			data->fan_exp[nr] =
				f75375_read16(client, F75375_REG_FAN_EXP(nr));
			data->pwm[nr] =	f75375_read8(client,
				F75375_REG_FAN_PWM_DUTY(nr));

		}
		for (nr = 0; nr < 4; nr++) {
			data->in_max[nr] =
				f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
			data->in_min[nr] =
				f75375_read8(client, F75375_REG_VOLT_LOW(nr));
		}
		data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
		data->last_limits = jiffies;
	}

	/* Measurement registers cache is refreshed after 2 second */
	if (time_after(jiffies, data->last_updated + 2 * HZ)
		|| !data->valid) {
		for (nr = 0; nr < 2; nr++) {
			data->temp[nr] =
				f75375_read8(client, F75375_REG_TEMP(nr));
			data->fan[nr] =
				f75375_read16(client, F75375_REG_FAN(nr));
		}
		for (nr = 0; nr < 4; nr++)
			data->in[nr] =
				f75375_read8(client, F75375_REG_VOLT(nr));

		data->last_updated = jiffies;
		data->valid = 1;
	}

	mutex_unlock(&data->update_lock);
	return data;
}

static inline u16 rpm_from_reg(u16 reg)
{
	if (reg == 0 || reg == 0xffff)
		return 0;
	return (1500000 / reg);
}

static inline u16 rpm_to_reg(int rpm)
{
	if (rpm < 367 || rpm > 0xffff)
		return 0xffff;
	return (1500000 / rpm);
}

static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct f75375_data *data = i2c_get_clientdata(client);
	int val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->fan_min[nr] = rpm_to_reg(val);
	f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t set_fan_exp(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct f75375_data *data = i2c_get_clientdata(client);
	int val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->fan_exp[nr] = rpm_to_reg(val);
	f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_exp[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct f75375_data *data = i2c_get_clientdata(client);
	int val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
	f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
		*attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct f75375_data *data = f75375_update_device(dev);
	return sprintf(buf, "%d\n", data->pwm_enable[nr]);
}

static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
{
	struct f75375_data *data = i2c_get_clientdata(client);
	u8 fanmode;

	if (val < 0 || val > 4)
		return -EINVAL;

	fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
	fanmode = ~(3 << FAN_CTRL_MODE(nr));

	switch (val) {
	case 0: /* Full speed */
		fanmode  |= (3 << FAN_CTRL_MODE(nr));
		data->pwm[nr] = 255;
		f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
				data->pwm[nr]);
		break;
	case 1: /* PWM */
		fanmode  |= (3 << FAN_CTRL_MODE(nr));
		break;
	case 2: /* AUTOMATIC*/
		fanmode  |= (2 << FAN_CTRL_MODE(nr));
		break;
	case 3: /* fan speed */
		break;
	}
	f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
	data->pwm_enable[nr] = val;
	return 0;
}

static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct f75375_data *data = i2c_get_clientdata(client);
	int val = simple_strtoul(buf, NULL, 10);
	int err = 0;

	mutex_lock(&data->update_lock);
	err = set_pwm_enable_direct(client, nr, val);
	mutex_unlock(&data->update_lock);
	return err ? err : count;
}

static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct f75375_data *data = i2c_get_clientdata(client);
	int val = simple_strtoul(buf, NULL, 10);
	u8 conf = 0;

	if (!(val == 0 || val == 1))
		return -EINVAL;

	mutex_lock(&data->update_lock);
	conf = f75375_read8(client, F75375_REG_CONFIG1);
	conf = ~(1 << FAN_CTRL_LINEAR(nr));

	if (val == 0)
		conf |= (1 << FAN_CTRL_LINEAR(nr)) ;

	f75375_write8(client, F75375_REG_CONFIG1, conf);
	data->pwm_mode[nr] = val;
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_pwm(struct device *dev, struct device_attribute
		*attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct f75375_data *data = f75375_update_device(dev);
	return sprintf(buf, "%d\n", data->pwm[nr]);
}

static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
		*attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct f75375_data *data = f75375_update_device(dev);
	return sprintf(buf, "%d\n", data->pwm_mode[nr]);
}

#define VOLT_FROM_REG(val) ((val) * 8)
#define VOLT_TO_REG(val) ((val) / 8)

static ssize_t show_in(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct f75375_data *data = f75375_update_device(dev);
	return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
}

static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct f75375_data *data = f75375_update_device(dev);
	return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
}

static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct f75375_data *data = f75375_update_device(dev);
	return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
}

static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct f75375_data *data = i2c_get_clientdata(client);
	int val = simple_strtoul(buf, NULL, 10);
	val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
	mutex_lock(&data->update_lock);
	data->in_max[nr] = val;
	f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct f75375_data *data = i2c_get_clientdata(client);
	int val = simple_strtoul(buf, NULL, 10);
	val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
	mutex_lock(&data->update_lock);
	data->in_min[nr] = val;
	f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}
#define TEMP_FROM_REG(val) ((val) * 1000)
#define TEMP_TO_REG(val) ((val) / 1000)

static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct f75375_data *data = f75375_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
}

static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct f75375_data *data = f75375_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
}

static ssize_t show_temp_max_hyst(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct f75375_data *data = f75375_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
}

static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct f75375_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);
	val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
	mutex_lock(&data->update_lock);
	data->temp_high[nr] = val;
	f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t set_temp_max_hyst(struct device *dev,
	struct device_attribute *attr, const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct f75375_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);
	val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
	mutex_lock(&data->update_lock);
	data->temp_max_hyst[nr] = val;
	f75375_write8(client, F75375_REG_TEMP_HYST(nr),
		data->temp_max_hyst[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

#define show_fan(thing) \
static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
			char *buf)\
{\
	int nr = to_sensor_dev_attr(attr)->index;\
	struct f75375_data *data = f75375_update_device(dev); \
	return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
}

show_fan(fan);
show_fan(fan_min);
show_fan(fan_full);
show_fan(fan_exp);

static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
	show_in_max, set_in_max, 0);
static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
	show_in_min, set_in_min, 0);
static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
	show_in_max, set_in_max, 1);
static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
	show_in_min, set_in_min, 1);
static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
	show_in_max, set_in_max, 2);
static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
	show_in_min, set_in_min, 2);
static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
	show_in_max, set_in_max, 3);
static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
	show_in_min, set_in_min, 3);
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
	show_temp_max_hyst, set_temp_max_hyst, 0);
static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
	show_temp_max, set_temp_max, 0);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
	show_temp_max_hyst, set_temp_max_hyst, 1);
static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
	show_temp_max, set_temp_max, 1);
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
static SENSOR_DEVICE_ATTR(fan1_full, S_IRUGO, show_fan_full, NULL, 0);
static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
	show_fan_min, set_fan_min, 0);
static SENSOR_DEVICE_ATTR(fan1_exp, S_IRUGO|S_IWUSR,
	show_fan_exp, set_fan_exp, 0);
static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
static SENSOR_DEVICE_ATTR(fan2_full, S_IRUGO, show_fan_full, NULL, 1);
static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
	show_fan_min, set_fan_min, 1);
static SENSOR_DEVICE_ATTR(fan2_exp, S_IRUGO|S_IWUSR,
	show_fan_exp, set_fan_exp, 1);
static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
	show_pwm, set_pwm, 0);
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
	show_pwm_enable, set_pwm_enable, 0);
static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
	show_pwm_mode, set_pwm_mode, 0);
static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
	show_pwm, set_pwm, 1);
static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
	show_pwm_enable, set_pwm_enable, 1);
static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
	show_pwm_mode, set_pwm_mode, 1);

static struct attribute *f75375_attributes[] = {
	&sensor_dev_attr_temp1_input.dev_attr.attr,
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
	&sensor_dev_attr_temp2_input.dev_attr.attr,
	&sensor_dev_attr_temp2_max.dev_attr.attr,
	&sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
	&sensor_dev_attr_fan1_input.dev_attr.attr,
	&sensor_dev_attr_fan1_full.dev_attr.attr,
	&sensor_dev_attr_fan1_min.dev_attr.attr,
	&sensor_dev_attr_fan1_exp.dev_attr.attr,
	&sensor_dev_attr_fan2_input.dev_attr.attr,
	&sensor_dev_attr_fan2_full.dev_attr.attr,
	&sensor_dev_attr_fan2_min.dev_attr.attr,
	&sensor_dev_attr_fan2_exp.dev_attr.attr,
	&sensor_dev_attr_pwm1.dev_attr.attr,
	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
	&sensor_dev_attr_pwm1_mode.dev_attr.attr,
	&sensor_dev_attr_pwm2.dev_attr.attr,
	&sensor_dev_attr_pwm2_enable.dev_attr.attr,
	&sensor_dev_attr_pwm2_mode.dev_attr.attr,
	&sensor_dev_attr_in0_input.dev_attr.attr,
	&sensor_dev_attr_in0_max.dev_attr.attr,
	&sensor_dev_attr_in0_min.dev_attr.attr,
	&sensor_dev_attr_in1_input.dev_attr.attr,
	&sensor_dev_attr_in1_max.dev_attr.attr,
	&sensor_dev_attr_in1_min.dev_attr.attr,
	&sensor_dev_attr_in2_input.dev_attr.attr,
	&sensor_dev_attr_in2_max.dev_attr.attr,
	&sensor_dev_attr_in2_min.dev_attr.attr,
	&sensor_dev_attr_in3_input.dev_attr.attr,
	&sensor_dev_attr_in3_max.dev_attr.attr,
	&sensor_dev_attr_in3_min.dev_attr.attr,
	NULL
};

static const struct attribute_group f75375_group = {
	.attrs = f75375_attributes,
};

static int f75375_detach_client(struct i2c_client *client)
{
	int err;

	f75375_remove(client);
	err = i2c_detach_client(client);
	if (err) {
		dev_err(&client->dev,
			"Client deregistration failed, "
			"client not detached.\n");
		return err;
	}
	kfree(client);
	return 0;
}

static void f75375_init(struct i2c_client *client, struct f75375_data *data,
		struct f75375s_platform_data *f75375s_pdata)
{
	int nr;
	set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
	set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
	for (nr = 0; nr < 2; nr++) {
		data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255);
		f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
			data->pwm[nr]);
	}

}

static int f75375_probe(struct i2c_client *client)
{
	struct f75375_data *data = i2c_get_clientdata(client);
	struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data;
	int err;

	if (!i2c_check_functionality(client->adapter,
				I2C_FUNC_SMBUS_BYTE_DATA))
		return -EIO;
	if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL)))
		return -ENOMEM;

	i2c_set_clientdata(client, data);
	data->client = client;
	mutex_init(&data->update_lock);

	if (strcmp(client->name, "f75375") == 0)
		data->kind = f75375;
	else if (strcmp(client->name, "f75373") == 0)
		data->kind = f75373;
	else {
		dev_err(&client->dev, "Unsupported device: %s\n", client->name);
		return -ENODEV;
	}

	if ((err = sysfs_create_group(&client->dev.kobj, &f75375_group)))
		goto exit_free;

	if (data->kind == f75375) {
		err = sysfs_chmod_file(&client->dev.kobj,
			&sensor_dev_attr_pwm1_mode.dev_attr.attr,
			S_IRUGO | S_IWUSR);
		if (err)
			goto exit_remove;
		err = sysfs_chmod_file(&client->dev.kobj,
			&sensor_dev_attr_pwm2_mode.dev_attr.attr,
			S_IRUGO | S_IWUSR);
		if (err)
			goto exit_remove;
	}

	data->hwmon_dev = hwmon_device_register(&client->dev);
	if (IS_ERR(data->hwmon_dev)) {
		err = PTR_ERR(data->hwmon_dev);
		goto exit_remove;
	}

	if (f75375s_pdata != NULL)
		f75375_init(client, data, f75375s_pdata);

	return 0;

exit_remove:
	sysfs_remove_group(&client->dev.kobj, &f75375_group);
exit_free:
	kfree(data);
	i2c_set_clientdata(client, NULL);
	return err;
}

static int f75375_remove(struct i2c_client *client)
{
	struct f75375_data *data = i2c_get_clientdata(client);
	hwmon_device_unregister(data->hwmon_dev);
	sysfs_remove_group(&client->dev.kobj, &f75375_group);
	kfree(data);
	i2c_set_clientdata(client, NULL);
	return 0;
}

static int f75375_attach_adapter(struct i2c_adapter *adapter)
{
	if (!(adapter->class & I2C_CLASS_HWMON))
		return 0;
	return i2c_probe(adapter, &addr_data, f75375_detect);
}

/* This function is called by i2c_probe */
static int f75375_detect(struct i2c_adapter *adapter, int address, int kind)
{
	struct i2c_client *client;
	u8 version = 0;
	int err = 0;
	const char *name = "";

	if (!(client = kzalloc(sizeof(*client), GFP_KERNEL))) {
		err = -ENOMEM;
		goto exit;
	}
	client->addr = address;
	client->adapter = adapter;
	client->driver = &f75375_legacy_driver;

	if (kind < 0) {
		u16 vendid = f75375_read16(client, F75375_REG_VENDOR);
		u16 chipid = f75375_read16(client, F75375_CHIP_ID);
		version = f75375_read8(client, F75375_REG_VERSION);
		if (chipid == 0x0306 && vendid == 0x1934) {
			kind = f75375;
		} else if (chipid == 0x0204 && vendid == 0x1934) {
			kind = f75373;
		} else {
			dev_err(&adapter->dev,
				"failed,%02X,%02X,%02X\n",
				chipid, version, vendid);
			goto exit_free;
		}
	}

	if (kind == f75375) {
		name = "f75375";
	} else if (kind == f75373) {
		name = "f75373";
	}
	dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
	strlcpy(client->name, name, I2C_NAME_SIZE);

	if ((err = i2c_attach_client(client)))
		goto exit_free;

	if ((err = f75375_probe(client)) < 0)
		goto exit_detach;

	return 0;

exit_detach:
	i2c_detach_client(client);
exit_free:
	kfree(client);
exit:
	return err;
}

static int __init sensors_f75375_init(void)
{
	int status;
	status = i2c_add_driver(&f75375_driver);
	if (status)
		return status;

	status = i2c_add_driver(&f75375_legacy_driver);
	if (status)
		i2c_del_driver(&f75375_driver);

	return status;
}

static void __exit sensors_f75375_exit(void)
{
	i2c_del_driver(&f75375_legacy_driver);
	i2c_del_driver(&f75375_driver);
}

MODULE_AUTHOR("Riku Voipio <riku.voipio@movial.fi>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("F75373/F75375 hardware monitoring driver");

module_init(sensors_f75375_init);
module_exit(sensors_f75375_exit);