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hwmon: Make a dozen drivers no more experimental
[linux-2.6-block.git] / drivers / hwmon / f71805f.c
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e53004e2
JD		 1/*
2 * f71805f.c - driver for the Fintek F71805F/FG Super-I/O chip integrated
3 * hardware monitoring features
4 * Copyright (C) 2005 Jean Delvare <khali@linux-fr.org>
5 *
6 * The F71805F/FG is a LPC Super-I/O chip made by Fintek. It integrates
7 * complete hardware monitoring features: voltage, fan and temperature
8 * sensors, and manual and automatic fan speed control.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25#include <linux/module.h>
26#include <linux/init.h>
27#include <linux/slab.h>
28#include <linux/jiffies.h>
29#include <linux/platform_device.h>
30#include <linux/hwmon.h>
31#include <linux/hwmon-sysfs.h>
32#include <linux/err.h>
f0819184 33#include <linux/mutex.h>
e53004e2
JD		 34#include <asm/io.h>
35
36static struct platform_device *pdev;
37
38#define DRVNAME "f71805f"
39
40/*
41 * Super-I/O constants and functions
42 */
43
44#define F71805F_LD_HWM 0x04
45
46#define SIO_REG_LDSEL 0x07 /* Logical device select */
47#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
48#define SIO_REG_DEVREV 0x22 /* Device revision */
49#define SIO_REG_MANID 0x23 /* Fintek ID (2 bytes) */
50#define SIO_REG_ENABLE 0x30 /* Logical device enable */
51#define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
52
53#define SIO_FINTEK_ID 0x1934
54#define SIO_F71805F_ID 0x0406
55
56static inline int
57superio_inb(int base, int reg)
58{
59 outb(reg, base);
60 return inb(base + 1);
61}
62
63static int
64superio_inw(int base, int reg)
65{
66 int val;
67 outb(reg++, base);
68 val = inb(base + 1) << 8;
69 outb(reg, base);
70 val |= inb(base + 1);
71 return val;
72}
73
74static inline void
75superio_select(int base, int ld)
76{
77 outb(SIO_REG_LDSEL, base);
78 outb(ld, base + 1);
79}
80
81static inline void
82superio_enter(int base)
83{
84 outb(0x87, base);
85 outb(0x87, base);
86}
87
88static inline void
89superio_exit(int base)
90{
91 outb(0xaa, base);
92}
93
94/*
95 * ISA constants
96 */
97
98#define REGION_LENGTH 2
99#define ADDR_REG_OFFSET 0
100#define DATA_REG_OFFSET 1
101
e53004e2
JD		 102/*
103 * Registers
104 */
105
106/* in nr from 0 to 8 (8-bit values) */
107#define F71805F_REG_IN(nr) (0x10 + (nr))
108#define F71805F_REG_IN_HIGH(nr) (0x40 + 2 * (nr))
109#define F71805F_REG_IN_LOW(nr) (0x41 + 2 * (nr))
110/* fan nr from 0 to 2 (12-bit values, two registers) */
111#define F71805F_REG_FAN(nr) (0x20 + 2 * (nr))
112#define F71805F_REG_FAN_LOW(nr) (0x28 + 2 * (nr))
113#define F71805F_REG_FAN_CTRL(nr) (0x60 + 16 * (nr))
114/* temp nr from 0 to 2 (8-bit values) */
115#define F71805F_REG_TEMP(nr) (0x1B + (nr))
116#define F71805F_REG_TEMP_HIGH(nr) (0x54 + 2 * (nr))
117#define F71805F_REG_TEMP_HYST(nr) (0x55 + 2 * (nr))
118#define F71805F_REG_TEMP_MODE 0x01
119
120#define F71805F_REG_START 0x00
121/* status nr from 0 to 2 */
122#define F71805F_REG_STATUS(nr) (0x36 + (nr))
123
124/*
125 * Data structures and manipulation thereof
126 */
127
128struct f71805f_data {
129 unsigned short addr;
130 const char *name;
f0819184 131 struct mutex lock;
e53004e2
JD		 132 struct class_device *class_dev;
133
f0819184 134 struct mutex update_lock;
e53004e2
JD		 135 char valid; /* !=0 if following fields are valid */
136 unsigned long last_updated; /* In jiffies */
137 unsigned long last_limits; /* In jiffies */
138
139 /* Register values */
140 u8 in[9];
141 u8 in_high[9];
142 u8 in_low[9];
143 u16 fan[3];
144 u16 fan_low[3];
145 u8 fan_enabled; /* Read once at init time */
146 u8 temp[3];
147 u8 temp_high[3];
148 u8 temp_hyst[3];
149 u8 temp_mode;
150 u8 alarms[3];
151};
152
153static inline long in_from_reg(u8 reg)
154{
155 return (reg * 8);
156}
157
158/* The 2 least significant bits are not used */
159static inline u8 in_to_reg(long val)
160{
161 if (val <= 0)
162 return 0;
163 if (val >= 2016)
164 return 0xfc;
165 return (((val + 16) / 32) << 2);
166}
167
168/* in0 is downscaled by a factor 2 internally */
169static inline long in0_from_reg(u8 reg)
170{
171 return (reg * 16);
172}
173
174static inline u8 in0_to_reg(long val)
175{
176 if (val <= 0)
177 return 0;
178 if (val >= 4032)
179 return 0xfc;
180 return (((val + 32) / 64) << 2);
181}
182
183/* The 4 most significant bits are not used */
184static inline long fan_from_reg(u16 reg)
185{
186 reg &= 0xfff;
187 if (!reg || reg == 0xfff)
188 return 0;
189 return (1500000 / reg);
190}
191
192static inline u16 fan_to_reg(long rpm)
193{
194 /* If the low limit is set below what the chip can measure,
195 store the largest possible 12-bit value in the registers,
196 so that no alarm will ever trigger. */
197 if (rpm < 367)
198 return 0xfff;
199 return (1500000 / rpm);
200}
201
202static inline long temp_from_reg(u8 reg)
203{
204 return (reg * 1000);
205}
206
207static inline u8 temp_to_reg(long val)
208{
209 if (val < 0)
210 val = 0;
211 else if (val > 1000 * 0xff)
212 val = 0xff;
213 return ((val + 500) / 1000);
214}
215
216/*
217 * Device I/O access
218 */
219
220static u8 f71805f_read8(struct f71805f_data *data, u8 reg)
221{
222 u8 val;
223
f0819184 224 mutex_lock(&data->lock);
e53004e2
JD		 225 outb(reg, data->addr + ADDR_REG_OFFSET);
226 val = inb(data->addr + DATA_REG_OFFSET);
f0819184 227 mutex_unlock(&data->lock);
e53004e2
JD		 228
229 return val;
230}
231
232static void f71805f_write8(struct f71805f_data *data, u8 reg, u8 val)
233{
f0819184 234 mutex_lock(&data->lock);
e53004e2
JD		 235 outb(reg, data->addr + ADDR_REG_OFFSET);
236 outb(val, data->addr + DATA_REG_OFFSET);
f0819184 237 mutex_unlock(&data->lock);
e53004e2
JD		 238}
239
240/* It is important to read the MSB first, because doing so latches the
241 value of the LSB, so we are sure both bytes belong to the same value. */
242static u16 f71805f_read16(struct f71805f_data *data, u8 reg)
243{
244 u16 val;
245
f0819184 246 mutex_lock(&data->lock);
e53004e2
JD		 247 outb(reg, data->addr + ADDR_REG_OFFSET);
248 val = inb(data->addr + DATA_REG_OFFSET) << 8;
249 outb(++reg, data->addr + ADDR_REG_OFFSET);
250 val |= inb(data->addr + DATA_REG_OFFSET);
f0819184 251 mutex_unlock(&data->lock);
e53004e2
JD		 252
253 return val;
254}
255
256static void f71805f_write16(struct f71805f_data *data, u8 reg, u16 val)
257{
f0819184 258 mutex_lock(&data->lock);
e53004e2
JD		 259 outb(reg, data->addr + ADDR_REG_OFFSET);
260 outb(val >> 8, data->addr + DATA_REG_OFFSET);
261 outb(++reg, data->addr + ADDR_REG_OFFSET);
262 outb(val & 0xff, data->addr + DATA_REG_OFFSET);
f0819184 263 mutex_unlock(&data->lock);
e53004e2
JD		 264}
265
266static struct f71805f_data *f71805f_update_device(struct device *dev)
267{
268 struct f71805f_data *data = dev_get_drvdata(dev);
269 int nr;
270
f0819184 271 mutex_lock(&data->update_lock);
e53004e2
JD		 272
273 /* Limit registers cache is refreshed after 60 seconds */
274 if (time_after(jiffies, data->last_updated + 60 * HZ)
275 || !data->valid) {
276 for (nr = 0; nr < 9; nr++) {
277 data->in_high[nr] = f71805f_read8(data,
278 F71805F_REG_IN_HIGH(nr));
279 data->in_low[nr] = f71805f_read8(data,
280 F71805F_REG_IN_LOW(nr));
281 }
282 for (nr = 0; nr < 3; nr++) {
283 if (data->fan_enabled & (1 << nr))
284 data->fan_low[nr] = f71805f_read16(data,
285 F71805F_REG_FAN_LOW(nr));
286 }
287 for (nr = 0; nr < 3; nr++) {
288 data->temp_high[nr] = f71805f_read8(data,
289 F71805F_REG_TEMP_HIGH(nr));
290 data->temp_hyst[nr] = f71805f_read8(data,
291 F71805F_REG_TEMP_HYST(nr));
292 }
293 data->temp_mode = f71805f_read8(data, F71805F_REG_TEMP_MODE);
294
295 data->last_limits = jiffies;
296 }
297
298 /* Measurement registers cache is refreshed after 1 second */
299 if (time_after(jiffies, data->last_updated + HZ)
300 || !data->valid) {
301 for (nr = 0; nr < 9; nr++) {
302 data->in[nr] = f71805f_read8(data,
303 F71805F_REG_IN(nr));
304 }
305 for (nr = 0; nr < 3; nr++) {
306 if (data->fan_enabled & (1 << nr))
307 data->fan[nr] = f71805f_read16(data,
308 F71805F_REG_FAN(nr));
309 }
310 for (nr = 0; nr < 3; nr++) {
311 data->temp[nr] = f71805f_read8(data,
312 F71805F_REG_TEMP(nr));
313 }
314 for (nr = 0; nr < 3; nr++) {
315 data->alarms[nr] = f71805f_read8(data,
316 F71805F_REG_STATUS(nr));
317 }
318
319 data->last_updated = jiffies;
320 data->valid = 1;
321 }
322
f0819184 323 mutex_unlock(&data->update_lock);
e53004e2
JD		 324
325 return data;
326}
327
328/*
329 * Sysfs interface
330 */
331
332static ssize_t show_in0(struct device *dev, struct device_attribute *devattr,
333 char *buf)
334{
335 struct f71805f_data *data = f71805f_update_device(dev);
336
337 return sprintf(buf, "%ld\n", in0_from_reg(data->in[0]));
338}
339
340static ssize_t show_in0_max(struct device *dev, struct device_attribute
341 *devattr, char *buf)
342{
343 struct f71805f_data *data = f71805f_update_device(dev);
344
345 return sprintf(buf, "%ld\n", in0_from_reg(data->in_high[0]));
346}
347
348static ssize_t show_in0_min(struct device *dev, struct device_attribute
349 *devattr, char *buf)
350{
351 struct f71805f_data *data = f71805f_update_device(dev);
352
353 return sprintf(buf, "%ld\n", in0_from_reg(data->in_low[0]));
354}
355
356static ssize_t set_in0_max(struct device *dev, struct device_attribute
357 *devattr, const char *buf, size_t count)
358{
359 struct f71805f_data *data = dev_get_drvdata(dev);
360 long val = simple_strtol(buf, NULL, 10);
361
f0819184 362 mutex_lock(&data->update_lock);
e53004e2
JD		 363 data->in_high[0] = in0_to_reg(val);
364 f71805f_write8(data, F71805F_REG_IN_HIGH(0), data->in_high[0]);
f0819184 365 mutex_unlock(&data->update_lock);
e53004e2
JD		 366
367 return count;
368}
369
370static ssize_t set_in0_min(struct device *dev, struct device_attribute
371 *devattr, const char *buf, size_t count)
372{
373 struct f71805f_data *data = dev_get_drvdata(dev);
374 long val = simple_strtol(buf, NULL, 10);
375
f0819184 376 mutex_lock(&data->update_lock);
e53004e2
JD		 377 data->in_low[0] = in0_to_reg(val);
378 f71805f_write8(data, F71805F_REG_IN_LOW(0), data->in_low[0]);
f0819184 379 mutex_unlock(&data->update_lock);
e53004e2
JD		 380
381 return count;
382}
383
e53004e2
JD		 384static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
385 char *buf)
386{
387 struct f71805f_data *data = f71805f_update_device(dev);
388 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
389 int nr = attr->index;
390
391 return sprintf(buf, "%ld\n", in_from_reg(data->in[nr]));
392}
393
394static ssize_t show_in_max(struct device *dev, struct device_attribute
395 *devattr, char *buf)
396{
397 struct f71805f_data *data = f71805f_update_device(dev);
398 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
399 int nr = attr->index;
400
401 return sprintf(buf, "%ld\n", in_from_reg(data->in_high[nr]));
402}
403
404static ssize_t show_in_min(struct device *dev, struct device_attribute
405 *devattr, char *buf)
406{
407 struct f71805f_data *data = f71805f_update_device(dev);
408 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
409 int nr = attr->index;
410
411 return sprintf(buf, "%ld\n", in_from_reg(data->in_low[nr]));
412}
413
414static ssize_t set_in_max(struct device *dev, struct device_attribute
415 *devattr, const char *buf, size_t count)
416{
417 struct f71805f_data *data = dev_get_drvdata(dev);
418 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
419 int nr = attr->index;
420 long val = simple_strtol(buf, NULL, 10);
421
f0819184 422 mutex_lock(&data->update_lock);
e53004e2
JD		 423 data->in_high[nr] = in_to_reg(val);
424 f71805f_write8(data, F71805F_REG_IN_HIGH(nr), data->in_high[nr]);
f0819184 425 mutex_unlock(&data->update_lock);
e53004e2
JD		 426
427 return count;
428}
429
430static ssize_t set_in_min(struct device *dev, struct device_attribute
431 *devattr, const char *buf, size_t count)
432{
433 struct f71805f_data *data = dev_get_drvdata(dev);
434 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
435 int nr = attr->index;
436 long val = simple_strtol(buf, NULL, 10);
437
f0819184 438 mutex_lock(&data->update_lock);
e53004e2
JD		 439 data->in_low[nr] = in_to_reg(val);
440 f71805f_write8(data, F71805F_REG_IN_LOW(nr), data->in_low[nr]);
f0819184 441 mutex_unlock(&data->update_lock);
e53004e2
JD		 442
443 return count;
444}
445
e53004e2
JD		 446static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
447 char *buf)
448{
449 struct f71805f_data *data = f71805f_update_device(dev);
450 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
451 int nr = attr->index;
452
453 return sprintf(buf, "%ld\n", fan_from_reg(data->fan[nr]));
454}
455
456static ssize_t show_fan_min(struct device *dev, struct device_attribute
457 *devattr, char *buf)
458{
459 struct f71805f_data *data = f71805f_update_device(dev);
460 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
461 int nr = attr->index;
462
463 return sprintf(buf, "%ld\n", fan_from_reg(data->fan_low[nr]));
464}
465
466static ssize_t set_fan_min(struct device *dev, struct device_attribute
467 *devattr, const char *buf, size_t count)
468{
469 struct f71805f_data *data = dev_get_drvdata(dev);
470 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
471 int nr = attr->index;
472 long val = simple_strtol(buf, NULL, 10);
473
f0819184 474 mutex_lock(&data->update_lock);
e53004e2
JD		 475 data->fan_low[nr] = fan_to_reg(val);
476 f71805f_write16(data, F71805F_REG_FAN_LOW(nr), data->fan_low[nr]);
f0819184 477 mutex_unlock(&data->update_lock);
e53004e2
JD		 478
479 return count;
480}
481
e53004e2
JD		 482static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
483 char *buf)
484{
485 struct f71805f_data *data = f71805f_update_device(dev);
486 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
487 int nr = attr->index;
488
489 return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr]));
490}
491
492static ssize_t show_temp_max(struct device *dev, struct device_attribute
493 *devattr, char *buf)
494{
495 struct f71805f_data *data = f71805f_update_device(dev);
496 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
497 int nr = attr->index;
498
499 return sprintf(buf, "%ld\n", temp_from_reg(data->temp_high[nr]));
500}
501
502static ssize_t show_temp_hyst(struct device *dev, struct device_attribute
503 *devattr, char *buf)
504{
505 struct f71805f_data *data = f71805f_update_device(dev);
506 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
507 int nr = attr->index;
508
509 return sprintf(buf, "%ld\n", temp_from_reg(data->temp_hyst[nr]));
510}
511
512static ssize_t show_temp_type(struct device *dev, struct device_attribute
513 *devattr, char *buf)
514{
515 struct f71805f_data *data = f71805f_update_device(dev);
516 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
517 int nr = attr->index;
518
519 /* 3 is diode, 4 is thermistor */
520 return sprintf(buf, "%u\n", (data->temp_mode & (1 << nr)) ? 3 : 4);
521}
522
523static ssize_t set_temp_max(struct device *dev, struct device_attribute
524 *devattr, const char *buf, size_t count)
525{
526 struct f71805f_data *data = dev_get_drvdata(dev);
527 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
528 int nr = attr->index;
529 long val = simple_strtol(buf, NULL, 10);
530
f0819184 531 mutex_lock(&data->update_lock);
e53004e2
JD		 532 data->temp_high[nr] = temp_to_reg(val);
533 f71805f_write8(data, F71805F_REG_TEMP_HIGH(nr), data->temp_high[nr]);
f0819184 534 mutex_unlock(&data->update_lock);
e53004e2
JD		 535
536 return count;
537}
538
539static ssize_t set_temp_hyst(struct device *dev, struct device_attribute
540 *devattr, const char *buf, size_t count)
541{
542 struct f71805f_data *data = dev_get_drvdata(dev);
543 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
544 int nr = attr->index;
545 long val = simple_strtol(buf, NULL, 10);
546
f0819184 547 mutex_lock(&data->update_lock);
e53004e2
JD		 548 data->temp_hyst[nr] = temp_to_reg(val);
549 f71805f_write8(data, F71805F_REG_TEMP_HYST(nr), data->temp_hyst[nr]);
f0819184 550 mutex_unlock(&data->update_lock);
e53004e2
JD		 551
552 return count;
553}
554
e53004e2
JD		 555static ssize_t show_alarms_in(struct device *dev, struct device_attribute
556 *devattr, char *buf)
557{
558 struct f71805f_data *data = f71805f_update_device(dev);
559
560 return sprintf(buf, "%d\n", data->alarms[0] |
561 ((data->alarms[1] & 0x01) << 8));
562}
563
564static ssize_t show_alarms_fan(struct device *dev, struct device_attribute
565 *devattr, char *buf)
566{
567 struct f71805f_data *data = f71805f_update_device(dev);
568
569 return sprintf(buf, "%d\n", data->alarms[2] & 0x07);
570}
571
572static ssize_t show_alarms_temp(struct device *dev, struct device_attribute
573 *devattr, char *buf)
574{
575 struct f71805f_data *data = f71805f_update_device(dev);
576
577 return sprintf(buf, "%d\n", (data->alarms[1] >> 3) & 0x07);
578}
579
e53004e2
JD		 580static ssize_t show_name(struct device *dev, struct device_attribute
581 *devattr, char *buf)
582{
583 struct f71805f_data *data = dev_get_drvdata(dev);
584
585 return sprintf(buf, "%s\n", data->name);
586}
587
2488a39d
JD		 588static struct device_attribute f71805f_dev_attr[] = {
589 __ATTR(in0_input, S_IRUGO, show_in0, NULL),
590 __ATTR(in0_max, S_IRUGO| S_IWUSR, show_in0_max, set_in0_max),
591 __ATTR(in0_min, S_IRUGO| S_IWUSR, show_in0_min, set_in0_min),
592 __ATTR(alarms_in, S_IRUGO, show_alarms_in, NULL),
593 __ATTR(alarms_fan, S_IRUGO, show_alarms_fan, NULL),
594 __ATTR(alarms_temp, S_IRUGO, show_alarms_temp, NULL),
595 __ATTR(name, S_IRUGO, show_name, NULL),
596};
597
598static struct sensor_device_attribute f71805f_sensor_attr[] = {
599 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
600 SENSOR_ATTR(in1_max, S_IRUGO | S_IWUSR,
601 show_in_max, set_in_max, 1),
602 SENSOR_ATTR(in1_min, S_IRUGO | S_IWUSR,
603 show_in_min, set_in_min, 1),
604 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
605 SENSOR_ATTR(in2_max, S_IRUGO | S_IWUSR,
606 show_in_max, set_in_max, 2),
607 SENSOR_ATTR(in2_min, S_IRUGO | S_IWUSR,
608 show_in_min, set_in_min, 2),
609 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
610 SENSOR_ATTR(in3_max, S_IRUGO | S_IWUSR,
611 show_in_max, set_in_max, 3),
612 SENSOR_ATTR(in3_min, S_IRUGO | S_IWUSR,
613 show_in_min, set_in_min, 3),
614 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
615 SENSOR_ATTR(in4_max, S_IRUGO | S_IWUSR,
616 show_in_max, set_in_max, 4),
617 SENSOR_ATTR(in4_min, S_IRUGO | S_IWUSR,
618 show_in_min, set_in_min, 4),
619 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
620 SENSOR_ATTR(in5_max, S_IRUGO | S_IWUSR,
621 show_in_max, set_in_max, 5),
622 SENSOR_ATTR(in5_min, S_IRUGO | S_IWUSR,
623 show_in_min, set_in_min, 5),
624 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
625 SENSOR_ATTR(in6_max, S_IRUGO | S_IWUSR,
626 show_in_max, set_in_max, 6),
627 SENSOR_ATTR(in6_min, S_IRUGO | S_IWUSR,
628 show_in_min, set_in_min, 6),
629 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
630 SENSOR_ATTR(in7_max, S_IRUGO | S_IWUSR,
631 show_in_max, set_in_max, 7),
632 SENSOR_ATTR(in7_min, S_IRUGO | S_IWUSR,
633 show_in_min, set_in_min, 7),
634 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
635 SENSOR_ATTR(in8_max, S_IRUGO | S_IWUSR,
636 show_in_max, set_in_max, 8),
637 SENSOR_ATTR(in8_min, S_IRUGO | S_IWUSR,
638 show_in_min, set_in_min, 8),
639
640 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
641 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
642 show_temp_max, set_temp_max, 0),
643 SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
644 show_temp_hyst, set_temp_hyst, 0),
645 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
646 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
647 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
648 show_temp_max, set_temp_max, 1),
649 SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
650 show_temp_hyst, set_temp_hyst, 1),
651 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
652 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
653 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
654 show_temp_max, set_temp_max, 2),
655 SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR,
656 show_temp_hyst, set_temp_hyst, 2),
657 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
658};
659
660static struct sensor_device_attribute f71805f_fan_attr[] = {
661 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
662 SENSOR_ATTR(fan1_min, S_IRUGO | S_IWUSR,
663 show_fan_min, set_fan_min, 0),
664 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
665 SENSOR_ATTR(fan2_min, S_IRUGO | S_IWUSR,
666 show_fan_min, set_fan_min, 1),
667 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
668 SENSOR_ATTR(fan3_min, S_IRUGO | S_IWUSR,
669 show_fan_min, set_fan_min, 2),
670};
e53004e2
JD		 671
672/*
673 * Device registration and initialization
674 */
675
676static void __devinit f71805f_init_device(struct f71805f_data *data)
677{
678 u8 reg;
679 int i;
680
681 reg = f71805f_read8(data, F71805F_REG_START);
682 if ((reg & 0x41) != 0x01) {
683 printk(KERN_DEBUG DRVNAME ": Starting monitoring "
684 "operations\n");
685 f71805f_write8(data, F71805F_REG_START, (reg | 0x01) & ~0x40);
686 }
687
688 /* Fan monitoring can be disabled. If it is, we won't be polling
689 the register values, and won't create the related sysfs files. */
690 for (i = 0; i < 3; i++) {
691 reg = f71805f_read8(data, F71805F_REG_FAN_CTRL(i));
692 if (!(reg & 0x80))
693 data->fan_enabled |= (1 << i);
694 }
695}
696
697static int __devinit f71805f_probe(struct platform_device *pdev)
698{
699 struct f71805f_data *data;
700 struct resource *res;
2488a39d 701 int i, err;
e53004e2
JD		 702
703 if (!(data = kzalloc(sizeof(struct f71805f_data), GFP_KERNEL))) {
704 err = -ENOMEM;
705 printk(KERN_ERR DRVNAME ": Out of memory\n");
706 goto exit;
707 }
708
709 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
710 data->addr = res->start;
f0819184 711 mutex_init(&data->lock);
e53004e2 712 data->name = "f71805f";
f0819184 713 mutex_init(&data->update_lock);
e53004e2
JD		 714
715 platform_set_drvdata(pdev, data);
716
717 data->class_dev = hwmon_device_register(&pdev->dev);
718 if (IS_ERR(data->class_dev)) {
719 err = PTR_ERR(data->class_dev);
720 dev_err(&pdev->dev, "Class registration failed (%d)\n", err);
721 goto exit_free;
722 }
723
724 /* Initialize the F71805F chip */
725 f71805f_init_device(data);
726
727 /* Register sysfs interface files */
2488a39d
JD		 728 for (i = 0; i < ARRAY_SIZE(f71805f_dev_attr); i++) {
729 err = device_create_file(&pdev->dev, &f71805f_dev_attr[i]);
730 if (err)
731 goto exit_class;
e53004e2 732 }
2488a39d
JD		 733 for (i = 0; i < ARRAY_SIZE(f71805f_sensor_attr); i++) {
734 err = device_create_file(&pdev->dev,
735 &f71805f_sensor_attr[i].dev_attr);
736 if (err)
737 goto exit_class;
e53004e2 738 }
2488a39d
JD		 739 for (i = 0; i < ARRAY_SIZE(f71805f_fan_attr); i++) {
740 if (!(data->fan_enabled & (1 << (i / 2))))
741 continue;
742 err = device_create_file(&pdev->dev,
743 &f71805f_fan_attr[i].dev_attr);
744 if (err)
745 goto exit_class;
e53004e2 746 }
e53004e2
JD		 747
748 return 0;
749
2488a39d
JD		 750exit_class:
751 dev_err(&pdev->dev, "Sysfs interface creation failed\n");
752 hwmon_device_unregister(data->class_dev);
e53004e2
JD		 753exit_free:
754 kfree(data);
755exit:
756 return err;
757}
758
759static int __devexit f71805f_remove(struct platform_device *pdev)
760{
761 struct f71805f_data *data = platform_get_drvdata(pdev);
762
763 platform_set_drvdata(pdev, NULL);
764 hwmon_device_unregister(data->class_dev);
765 kfree(data);
766
767 return 0;
768}
769
770static struct platform_driver f71805f_driver = {
771 .driver = {
772 .owner = THIS_MODULE,
773 .name = DRVNAME,
774 },
775 .probe = f71805f_probe,
776 .remove = __devexit_p(f71805f_remove),
777};
778
779static int __init f71805f_device_add(unsigned short address)
780{
568825c8
JD		 781 struct resource res = {
782 .start = address,
783 .end = address + REGION_LENGTH - 1,
784 .flags = IORESOURCE_IO,
785 };
e53004e2
JD		 786 int err;
787
788 pdev = platform_device_alloc(DRVNAME, address);
789 if (!pdev) {
790 err = -ENOMEM;
791 printk(KERN_ERR DRVNAME ": Device allocation failed\n");
792 goto exit;
793 }
794
568825c8
JD		 795 res.name = pdev->name;
796 err = platform_device_add_resources(pdev, &res, 1);
e53004e2
JD		 797 if (err) {
798 printk(KERN_ERR DRVNAME ": Device resource addition failed "
799 "(%d)\n", err);
800 goto exit_device_put;
801 }
802
803 err = platform_device_add(pdev);
804 if (err) {
805 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
806 err);
807 goto exit_device_put;
808 }
809
810 return 0;
811
812exit_device_put:
813 platform_device_put(pdev);
814exit:
815 return err;
816}
817
818static int __init f71805f_find(int sioaddr, unsigned short *address)
819{
820 int err = -ENODEV;
821 u16 devid;
822
823 superio_enter(sioaddr);
824
825 devid = superio_inw(sioaddr, SIO_REG_MANID);
826 if (devid != SIO_FINTEK_ID)
827 goto exit;
828
829 devid = superio_inw(sioaddr, SIO_REG_DEVID);
830 if (devid != SIO_F71805F_ID) {
831 printk(KERN_INFO DRVNAME ": Unsupported Fintek device, "
832 "skipping\n");
833 goto exit;
834 }
835
836 superio_select(sioaddr, F71805F_LD_HWM);
837 if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) {
838 printk(KERN_WARNING DRVNAME ": Device not activated, "
839 "skipping\n");
840 goto exit;
841 }
842
843 *address = superio_inw(sioaddr, SIO_REG_ADDR);
844 if (*address == 0) {
845 printk(KERN_WARNING DRVNAME ": Base address not set, "
846 "skipping\n");
847 goto exit;
848 }
849
850 err = 0;
851 printk(KERN_INFO DRVNAME ": Found F71805F chip at %#x, revision %u\n",
852 *address, superio_inb(sioaddr, SIO_REG_DEVREV));
853
854exit:
855 superio_exit(sioaddr);
856 return err;
857}
858
859static int __init f71805f_init(void)
860{
861 int err;
862 unsigned short address;
863
864 if (f71805f_find(0x2e, &address)
865 && f71805f_find(0x4e, &address))
866 return -ENODEV;
867
868 err = platform_driver_register(&f71805f_driver);
869 if (err)
870 goto exit;
871
872 /* Sets global pdev as a side effect */
873 err = f71805f_device_add(address);
874 if (err)
875 goto exit_driver;
876
877 return 0;
878
879exit_driver:
880 platform_driver_unregister(&f71805f_driver);
881exit:
882 return err;
883}
884
885static void __exit f71805f_exit(void)
886{
887 platform_device_unregister(pdev);
888 platform_driver_unregister(&f71805f_driver);
889}
890
891MODULE_AUTHOR("Jean Delvare <khali@linux-fr>");
892MODULE_LICENSE("GPL");
893MODULE_DESCRIPTION("F71805F hardware monitoring driver");
894
895module_init(f71805f_init);
896module_exit(f71805f_exit);
Linux 6.x block layer and io_uring tree(s)