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1/*
2 * it87.c - Part of lm_sensors, Linux kernel modules for hardware
3 * monitoring.
4 *
5 * The IT8705F is an LPC-based Super I/O part that contains UARTs, a
6 * parallel port, an IR port, a MIDI port, a floppy controller, etc., in
7 * addition to an Environment Controller (Enhanced Hardware Monitor and
8 * Fan Controller)
9 *
10 * This driver supports only the Environment Controller in the IT8705F and
11 * similar parts. The other devices are supported by different drivers.
12 *
13 * Supports: IT8705F Super I/O chip w/LPC interface
14 * IT8712F Super I/O chip w/LPC interface
15 * IT8716F Super I/O chip w/LPC interface
16 * IT8718F Super I/O chip w/LPC interface
17 * IT8720F Super I/O chip w/LPC interface
18 * IT8721F Super I/O chip w/LPC interface
19 * IT8726F Super I/O chip w/LPC interface
20 * IT8758E Super I/O chip w/LPC interface
21 * Sis950 A clone of the IT8705F
22 *
23 * Copyright (C) 2001 Chris Gauthron
24 * Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org>
25 *
26 * This program is free software; you can redistribute it and/or modify
27 * it under the terms of the GNU General Public License as published by
28 * the Free Software Foundation; either version 2 of the License, or
29 * (at your option) any later version.
30 *
31 * This program is distributed in the hope that it will be useful,
32 * but WITHOUT ANY WARRANTY; without even the implied warranty of
33 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
34 * GNU General Public License for more details.
35 *
36 * You should have received a copy of the GNU General Public License
37 * along with this program; if not, write to the Free Software
38 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
39 */
40
41#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
42
43#include <linux/module.h>
44#include <linux/init.h>
45#include <linux/slab.h>
46#include <linux/jiffies.h>
47#include <linux/platform_device.h>
48#include <linux/hwmon.h>
49#include <linux/hwmon-sysfs.h>
50#include <linux/hwmon-vid.h>
51#include <linux/err.h>
52#include <linux/mutex.h>
53#include <linux/sysfs.h>
54#include <linux/string.h>
55#include <linux/dmi.h>
56#include <linux/acpi.h>
57#include <linux/io.h>
58
59#define DRVNAME "it87"
60
61enum chips { it87, it8712, it8716, it8718, it8720, it8721 };
62
63static unsigned short force_id;
64module_param(force_id, ushort, 0);
65MODULE_PARM_DESC(force_id, "Override the detected device ID");
66
67static struct platform_device *pdev;
68
69#define REG 0x2e /* The register to read/write */
70#define DEV 0x07 /* Register: Logical device select */
71#define VAL 0x2f /* The value to read/write */
72#define PME 0x04 /* The device with the fan registers in it */
73
74/* The device with the IT8718F/IT8720F VID value in it */
75#define GPIO 0x07
76
77#define DEVID 0x20 /* Register: Device ID */
78#define DEVREV 0x22 /* Register: Device Revision */
79
80static inline int superio_inb(int reg)
81{
82 outb(reg, REG);
83 return inb(VAL);
84}
85
86static inline void superio_outb(int reg, int val)
87{
88 outb(reg, REG);
89 outb(val, VAL);
90}
91
92static int superio_inw(int reg)
93{
94 int val;
95 outb(reg++, REG);
96 val = inb(VAL) << 8;
97 outb(reg, REG);
98 val |= inb(VAL);
99 return val;
100}
101
102static inline void superio_select(int ldn)
103{
104 outb(DEV, REG);
105 outb(ldn, VAL);
106}
107
108static inline int superio_enter(void)
109{
110 /*
111 * Try to reserve REG and REG + 1 for exclusive access.
112 */
113 if (!request_muxed_region(REG, 2, DRVNAME))
114 return -EBUSY;
115
116 outb(0x87, REG);
117 outb(0x01, REG);
118 outb(0x55, REG);
119 outb(0x55, REG);
120 return 0;
121}
122
123static inline void superio_exit(void)
124{
125 outb(0x02, REG);
126 outb(0x02, VAL);
127 release_region(REG, 2);
128}
129
130/* Logical device 4 registers */
131#define IT8712F_DEVID 0x8712
132#define IT8705F_DEVID 0x8705
133#define IT8716F_DEVID 0x8716
134#define IT8718F_DEVID 0x8718
135#define IT8720F_DEVID 0x8720
136#define IT8721F_DEVID 0x8721
137#define IT8726F_DEVID 0x8726
138#define IT87_ACT_REG 0x30
139#define IT87_BASE_REG 0x60
140
141/* Logical device 7 registers (IT8712F and later) */
142#define IT87_SIO_GPIO3_REG 0x27
143#define IT87_SIO_GPIO5_REG 0x29
144#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
145#define IT87_SIO_VID_REG 0xfc /* VID value */
146#define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
147
148/* Update battery voltage after every reading if true */
149static int update_vbat;
150
151/* Not all BIOSes properly configure the PWM registers */
152static int fix_pwm_polarity;
153
154/* Many IT87 constants specified below */
155
156/* Length of ISA address segment */
157#define IT87_EXTENT 8
158
159/* Length of ISA address segment for Environmental Controller */
160#define IT87_EC_EXTENT 2
161
162/* Offset of EC registers from ISA base address */
163#define IT87_EC_OFFSET 5
164
165/* Where are the ISA address/data registers relative to the EC base address */
166#define IT87_ADDR_REG_OFFSET 0
167#define IT87_DATA_REG_OFFSET 1
168
169/*----- The IT87 registers -----*/
170
171#define IT87_REG_CONFIG 0x00
172
173#define IT87_REG_ALARM1 0x01
174#define IT87_REG_ALARM2 0x02
175#define IT87_REG_ALARM3 0x03
176
177/* The IT8718F and IT8720F have the VID value in a different register, in
178 Super-I/O configuration space. */
179#define IT87_REG_VID 0x0a
180/* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
181 for fan divisors. Later IT8712F revisions must use 16-bit tachometer
182 mode. */
183#define IT87_REG_FAN_DIV 0x0b
184#define IT87_REG_FAN_16BIT 0x0c
185
186/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
187
188static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
189static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 };
190static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
191static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
192#define IT87_REG_FAN_MAIN_CTRL 0x13
193#define IT87_REG_FAN_CTL 0x14
194#define IT87_REG_PWM(nr) (0x15 + (nr))
195#define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8)
196
197#define IT87_REG_VIN(nr) (0x20 + (nr))
198#define IT87_REG_TEMP(nr) (0x29 + (nr))
199
200#define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
201#define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
202#define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
203#define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
204
205#define IT87_REG_VIN_ENABLE 0x50
206#define IT87_REG_TEMP_ENABLE 0x51
207#define IT87_REG_BEEP_ENABLE 0x5c
208
209#define IT87_REG_CHIPID 0x58
210
211#define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
212#define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i))
213
214
215struct it87_sio_data {
216 enum chips type;
217 /* Values read from Super-I/O config space */
218 u8 revision;
219 u8 vid_value;
220 u8 beep_pin;
221 u8 internal; /* Internal sensors can be labeled */
222 /* Features skipped based on config or DMI */
223 u8 skip_vid;
224 u8 skip_fan;
225 u8 skip_pwm;
226};
227
228/* For each registered chip, we need to keep some data in memory.
229 The structure is dynamically allocated. */
230struct it87_data {
231 struct device *hwmon_dev;
232 enum chips type;
233 u8 revision;
234
235 unsigned short addr;
236 const char *name;
237 struct mutex update_lock;
238 char valid; /* !=0 if following fields are valid */
239 unsigned long last_updated; /* In jiffies */
240
241 u16 in_scaled; /* Internal voltage sensors are scaled */
242 u8 in[9]; /* Register value */
243 u8 in_max[8]; /* Register value */
244 u8 in_min[8]; /* Register value */
245 u8 has_fan; /* Bitfield, fans enabled */
246 u16 fan[5]; /* Register values, possibly combined */
247 u16 fan_min[5]; /* Register values, possibly combined */
248 s8 temp[3]; /* Register value */
249 s8 temp_high[3]; /* Register value */
250 s8 temp_low[3]; /* Register value */
251 u8 sensor; /* Register value */
252 u8 fan_div[3]; /* Register encoding, shifted right */
253 u8 vid; /* Register encoding, combined */
254 u8 vrm;
255 u32 alarms; /* Register encoding, combined */
256 u8 beeps; /* Register encoding */
257 u8 fan_main_ctrl; /* Register value */
258 u8 fan_ctl; /* Register value */
259
260 /* The following 3 arrays correspond to the same registers up to
261 * the IT8720F. The meaning of bits 6-0 depends on the value of bit
262 * 7, and we want to preserve settings on mode changes, so we have
263 * to track all values separately.
264 * Starting with the IT8721F, the manual PWM duty cycles are stored
265 * in separate registers (8-bit values), so the separate tracking
266 * is no longer needed, but it is still done to keep the driver
267 * simple. */
268 u8 pwm_ctrl[3]; /* Register value */
269 u8 pwm_duty[3]; /* Manual PWM value set by user */
270 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */
271
272 /* Automatic fan speed control registers */
273 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */
274 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
275};
276
277static u8 in_to_reg(const struct it87_data *data, int nr, long val)
278{
279 long lsb;
280
281 if (data->type == it8721) {
282 if (data->in_scaled & (1 << nr))
283 lsb = 24;
284 else
285 lsb = 12;
286 } else
287 lsb = 16;
288
289 val = DIV_ROUND_CLOSEST(val, lsb);
290 return SENSORS_LIMIT(val, 0, 255);
291}
292
293static int in_from_reg(const struct it87_data *data, int nr, int val)
294{
295 if (data->type == it8721) {
296 if (data->in_scaled & (1 << nr))
297 return val * 24;
298 else
299 return val * 12;
300 } else
301 return val * 16;
302}
303
304static inline u8 FAN_TO_REG(long rpm, int div)
305{
306 if (rpm == 0)
307 return 255;
308 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
309 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
310 254);
311}
312
313static inline u16 FAN16_TO_REG(long rpm)
314{
315 if (rpm == 0)
316 return 0xffff;
317 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
318}
319
320#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
321 1350000 / ((val) * (div)))
322/* The divider is fixed to 2 in 16-bit mode */
323#define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
324 1350000 / ((val) * 2))
325
326#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
327 ((val) + 500) / 1000), -128, 127))
328#define TEMP_FROM_REG(val) ((val) * 1000)
329
330static u8 pwm_to_reg(const struct it87_data *data, long val)
331{
332 if (data->type == it8721)
333 return val;
334 else
335 return val >> 1;
336}
337
338static int pwm_from_reg(const struct it87_data *data, u8 reg)
339{
340 if (data->type == it8721)
341 return reg;
342 else
343 return (reg & 0x7f) << 1;
344}
345
346
347static int DIV_TO_REG(int val)
348{
349 int answer = 0;
350 while (answer < 7 && (val >>= 1))
351 answer++;
352 return answer;
353}
354#define DIV_FROM_REG(val) (1 << (val))
355
356static const unsigned int pwm_freq[8] = {
357 48000000 / 128,
358 24000000 / 128,
359 12000000 / 128,
360 8000000 / 128,
361 6000000 / 128,
362 3000000 / 128,
363 1500000 / 128,
364 750000 / 128,
365};
366
367static inline int has_16bit_fans(const struct it87_data *data)
368{
369 /* IT8705F Datasheet 0.4.1, 3h == Version G.
370 IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
371 These are the first revisions with 16bit tachometer support. */
372 return (data->type == it87 && data->revision >= 0x03)
373 || (data->type == it8712 && data->revision >= 0x08)
374 || data->type == it8716
375 || data->type == it8718
376 || data->type == it8720
377 || data->type == it8721;
378}
379
380static inline int has_old_autopwm(const struct it87_data *data)
381{
382 /* The old automatic fan speed control interface is implemented
383 by IT8705F chips up to revision F and IT8712F chips up to
384 revision G. */
385 return (data->type == it87 && data->revision < 0x03)
386 || (data->type == it8712 && data->revision < 0x08);
387}
388
389static int it87_probe(struct platform_device *pdev);
390static int __devexit it87_remove(struct platform_device *pdev);
391
392static int it87_read_value(struct it87_data *data, u8 reg);
393static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
394static struct it87_data *it87_update_device(struct device *dev);
395static int it87_check_pwm(struct device *dev);
396static void it87_init_device(struct platform_device *pdev);
397
398
399static struct platform_driver it87_driver = {
400 .driver = {
401 .owner = THIS_MODULE,
402 .name = DRVNAME,
403 },
404 .probe = it87_probe,
405 .remove = __devexit_p(it87_remove),
406};
407
408static ssize_t show_in(struct device *dev, struct device_attribute *attr,
409 char *buf)
410{
411 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
412 int nr = sensor_attr->index;
413
414 struct it87_data *data = it87_update_device(dev);
415 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr]));
416}
417
418static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
419 char *buf)
420{
421 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
422 int nr = sensor_attr->index;
423
424 struct it87_data *data = it87_update_device(dev);
425 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in_min[nr]));
426}
427
428static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
429 char *buf)
430{
431 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
432 int nr = sensor_attr->index;
433
434 struct it87_data *data = it87_update_device(dev);
435 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in_max[nr]));
436}
437
438static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
439 const char *buf, size_t count)
440{
441 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
442 int nr = sensor_attr->index;
443
444 struct it87_data *data = dev_get_drvdata(dev);
445 unsigned long val;
446
447 if (strict_strtoul(buf, 10, &val) < 0)
448 return -EINVAL;
449
450 mutex_lock(&data->update_lock);
451 data->in_min[nr] = in_to_reg(data, nr, val);
452 it87_write_value(data, IT87_REG_VIN_MIN(nr),
453 data->in_min[nr]);
454 mutex_unlock(&data->update_lock);
455 return count;
456}
457static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
458 const char *buf, size_t count)
459{
460 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
461 int nr = sensor_attr->index;
462
463 struct it87_data *data = dev_get_drvdata(dev);
464 unsigned long val;
465
466 if (strict_strtoul(buf, 10, &val) < 0)
467 return -EINVAL;
468
469 mutex_lock(&data->update_lock);
470 data->in_max[nr] = in_to_reg(data, nr, val);
471 it87_write_value(data, IT87_REG_VIN_MAX(nr),
472 data->in_max[nr]);
473 mutex_unlock(&data->update_lock);
474 return count;
475}
476
477#define show_in_offset(offset) \
478static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
479 show_in, NULL, offset);
480
481#define limit_in_offset(offset) \
482static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
483 show_in_min, set_in_min, offset); \
484static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
485 show_in_max, set_in_max, offset);
486
487show_in_offset(0);
488limit_in_offset(0);
489show_in_offset(1);
490limit_in_offset(1);
491show_in_offset(2);
492limit_in_offset(2);
493show_in_offset(3);
494limit_in_offset(3);
495show_in_offset(4);
496limit_in_offset(4);
497show_in_offset(5);
498limit_in_offset(5);
499show_in_offset(6);
500limit_in_offset(6);
501show_in_offset(7);
502limit_in_offset(7);
503show_in_offset(8);
504
505/* 3 temperatures */
506static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
507 char *buf)
508{
509 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
510 int nr = sensor_attr->index;
511
512 struct it87_data *data = it87_update_device(dev);
513 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
514}
515static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
516 char *buf)
517{
518 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
519 int nr = sensor_attr->index;
520
521 struct it87_data *data = it87_update_device(dev);
522 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
523}
524static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
525 char *buf)
526{
527 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
528 int nr = sensor_attr->index;
529
530 struct it87_data *data = it87_update_device(dev);
531 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr]));
532}
533static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
534 const char *buf, size_t count)
535{
536 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
537 int nr = sensor_attr->index;
538
539 struct it87_data *data = dev_get_drvdata(dev);
540 long val;
541
542 if (strict_strtol(buf, 10, &val) < 0)
543 return -EINVAL;
544
545 mutex_lock(&data->update_lock);
546 data->temp_high[nr] = TEMP_TO_REG(val);
547 it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]);
548 mutex_unlock(&data->update_lock);
549 return count;
550}
551static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
552 const char *buf, size_t count)
553{
554 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
555 int nr = sensor_attr->index;
556
557 struct it87_data *data = dev_get_drvdata(dev);
558 long val;
559
560 if (strict_strtol(buf, 10, &val) < 0)
561 return -EINVAL;
562
563 mutex_lock(&data->update_lock);
564 data->temp_low[nr] = TEMP_TO_REG(val);
565 it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]);
566 mutex_unlock(&data->update_lock);
567 return count;
568}
569#define show_temp_offset(offset) \
570static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
571 show_temp, NULL, offset - 1); \
572static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
573 show_temp_max, set_temp_max, offset - 1); \
574static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
575 show_temp_min, set_temp_min, offset - 1);
576
577show_temp_offset(1);
578show_temp_offset(2);
579show_temp_offset(3);
580
581static ssize_t show_sensor(struct device *dev, struct device_attribute *attr,
582 char *buf)
583{
584 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
585 int nr = sensor_attr->index;
586
587 struct it87_data *data = it87_update_device(dev);
588 u8 reg = data->sensor; /* In case the value is updated while
589 we use it */
590
591 if (reg & (1 << nr))
592 return sprintf(buf, "3\n"); /* thermal diode */
593 if (reg & (8 << nr))
594 return sprintf(buf, "4\n"); /* thermistor */
595 return sprintf(buf, "0\n"); /* disabled */
596}
597static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
598 const char *buf, size_t count)
599{
600 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
601 int nr = sensor_attr->index;
602
603 struct it87_data *data = dev_get_drvdata(dev);
604 long val;
605 u8 reg;
606
607 if (strict_strtol(buf, 10, &val) < 0)
608 return -EINVAL;
609
610 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
611 reg &= ~(1 << nr);
612 reg &= ~(8 << nr);
613 if (val == 2) { /* backwards compatibility */
614 dev_warn(dev, "Sensor type 2 is deprecated, please use 4 "
615 "instead\n");
616 val = 4;
617 }
618 /* 3 = thermal diode; 4 = thermistor; 0 = disabled */
619 if (val == 3)
620 reg |= 1 << nr;
621 else if (val == 4)
622 reg |= 8 << nr;
623 else if (val != 0)
624 return -EINVAL;
625
626 mutex_lock(&data->update_lock);
627 data->sensor = reg;
628 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
629 data->valid = 0; /* Force cache refresh */
630 mutex_unlock(&data->update_lock);
631 return count;
632}
633#define show_sensor_offset(offset) \
634static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
635 show_sensor, set_sensor, offset - 1);
636
637show_sensor_offset(1);
638show_sensor_offset(2);
639show_sensor_offset(3);
640
641/* 3 Fans */
642
643static int pwm_mode(const struct it87_data *data, int nr)
644{
645 int ctrl = data->fan_main_ctrl & (1 << nr);
646
647 if (ctrl == 0) /* Full speed */
648 return 0;
649 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
650 return 2;
651 else /* Manual mode */
652 return 1;
653}
654
655static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
656 char *buf)
657{
658 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
659 int nr = sensor_attr->index;
660
661 struct it87_data *data = it87_update_device(dev);
662 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
663 DIV_FROM_REG(data->fan_div[nr])));
664}
665static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
666 char *buf)
667{
668 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
669 int nr = sensor_attr->index;
670
671 struct it87_data *data = it87_update_device(dev);
672 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
673 DIV_FROM_REG(data->fan_div[nr])));
674}
675static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
676 char *buf)
677{
678 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
679 int nr = sensor_attr->index;
680
681 struct it87_data *data = it87_update_device(dev);
682 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
683}
684static ssize_t show_pwm_enable(struct device *dev,
685 struct device_attribute *attr, char *buf)
686{
687 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
688 int nr = sensor_attr->index;
689
690 struct it87_data *data = it87_update_device(dev);
691 return sprintf(buf, "%d\n", pwm_mode(data, nr));
692}
693static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
694 char *buf)
695{
696 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
697 int nr = sensor_attr->index;
698
699 struct it87_data *data = it87_update_device(dev);
700 return sprintf(buf, "%d\n",
701 pwm_from_reg(data, data->pwm_duty[nr]));
702}
703static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
704 char *buf)
705{
706 struct it87_data *data = it87_update_device(dev);
707 int index = (data->fan_ctl >> 4) & 0x07;
708
709 return sprintf(buf, "%u\n", pwm_freq[index]);
710}
711static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
712 const char *buf, size_t count)
713{
714 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
715 int nr = sensor_attr->index;
716
717 struct it87_data *data = dev_get_drvdata(dev);
718 long val;
719 u8 reg;
720
721 if (strict_strtol(buf, 10, &val) < 0)
722 return -EINVAL;
723
724 mutex_lock(&data->update_lock);
725 reg = it87_read_value(data, IT87_REG_FAN_DIV);
726 switch (nr) {
727 case 0:
728 data->fan_div[nr] = reg & 0x07;
729 break;
730 case 1:
731 data->fan_div[nr] = (reg >> 3) & 0x07;
732 break;
733 case 2:
734 data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
735 break;
736 }
737
738 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
739 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
740 mutex_unlock(&data->update_lock);
741 return count;
742}
743static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
744 const char *buf, size_t count)
745{
746 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
747 int nr = sensor_attr->index;
748
749 struct it87_data *data = dev_get_drvdata(dev);
750 unsigned long val;
751 int min;
752 u8 old;
753
754 if (strict_strtoul(buf, 10, &val) < 0)
755 return -EINVAL;
756
757 mutex_lock(&data->update_lock);
758 old = it87_read_value(data, IT87_REG_FAN_DIV);
759
760 /* Save fan min limit */
761 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
762
763 switch (nr) {
764 case 0:
765 case 1:
766 data->fan_div[nr] = DIV_TO_REG(val);
767 break;
768 case 2:
769 if (val < 8)
770 data->fan_div[nr] = 1;
771 else
772 data->fan_div[nr] = 3;
773 }
774 val = old & 0x80;
775 val |= (data->fan_div[0] & 0x07);
776 val |= (data->fan_div[1] & 0x07) << 3;
777 if (data->fan_div[2] == 3)
778 val |= 0x1 << 6;
779 it87_write_value(data, IT87_REG_FAN_DIV, val);
780
781 /* Restore fan min limit */
782 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
783 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
784
785 mutex_unlock(&data->update_lock);
786 return count;
787}
788
789/* Returns 0 if OK, -EINVAL otherwise */
790static int check_trip_points(struct device *dev, int nr)
791{
792 const struct it87_data *data = dev_get_drvdata(dev);
793 int i, err = 0;
794
795 if (has_old_autopwm(data)) {
796 for (i = 0; i < 3; i++) {
797 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
798 err = -EINVAL;
799 }
800 for (i = 0; i < 2; i++) {
801 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
802 err = -EINVAL;
803 }
804 }
805
806 if (err) {
807 dev_err(dev, "Inconsistent trip points, not switching to "
808 "automatic mode\n");
809 dev_err(dev, "Adjust the trip points and try again\n");
810 }
811 return err;
812}
813
814static ssize_t set_pwm_enable(struct device *dev,
815 struct device_attribute *attr, const char *buf, size_t count)
816{
817 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
818 int nr = sensor_attr->index;
819
820 struct it87_data *data = dev_get_drvdata(dev);
821 long val;
822
823 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 2)
824 return -EINVAL;
825
826 /* Check trip points before switching to automatic mode */
827 if (val == 2) {
828 if (check_trip_points(dev, nr) < 0)
829 return -EINVAL;
830 }
831
832 mutex_lock(&data->update_lock);
833
834 if (val == 0) {
835 int tmp;
836 /* make sure the fan is on when in on/off mode */
837 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
838 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
839 /* set on/off mode */
840 data->fan_main_ctrl &= ~(1 << nr);
841 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
842 data->fan_main_ctrl);
843 } else {
844 if (val == 1) /* Manual mode */
845 data->pwm_ctrl[nr] = data->type == it8721 ?
846 data->pwm_temp_map[nr] :
847 data->pwm_duty[nr];
848 else /* Automatic mode */
849 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
850 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
851 /* set SmartGuardian mode */
852 data->fan_main_ctrl |= (1 << nr);
853 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
854 data->fan_main_ctrl);
855 }
856
857 mutex_unlock(&data->update_lock);
858 return count;
859}
860static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
861 const char *buf, size_t count)
862{
863 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
864 int nr = sensor_attr->index;
865
866 struct it87_data *data = dev_get_drvdata(dev);
867 long val;
868
869 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255)
870 return -EINVAL;
871
872 mutex_lock(&data->update_lock);
873 if (data->type == it8721) {
874 /* If we are in automatic mode, the PWM duty cycle register
875 * is read-only so we can't write the value */
876 if (data->pwm_ctrl[nr] & 0x80) {
877 mutex_unlock(&data->update_lock);
878 return -EBUSY;
879 }
880 data->pwm_duty[nr] = pwm_to_reg(data, val);
881 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
882 data->pwm_duty[nr]);
883 } else {
884 data->pwm_duty[nr] = pwm_to_reg(data, val);
885 /* If we are in manual mode, write the duty cycle immediately;
886 * otherwise, just store it for later use. */
887 if (!(data->pwm_ctrl[nr] & 0x80)) {
888 data->pwm_ctrl[nr] = data->pwm_duty[nr];
889 it87_write_value(data, IT87_REG_PWM(nr),
890 data->pwm_ctrl[nr]);
891 }
892 }
893 mutex_unlock(&data->update_lock);
894 return count;
895}
896static ssize_t set_pwm_freq(struct device *dev,
897 struct device_attribute *attr, const char *buf, size_t count)
898{
899 struct it87_data *data = dev_get_drvdata(dev);
900 unsigned long val;
901 int i;
902
903 if (strict_strtoul(buf, 10, &val) < 0)
904 return -EINVAL;
905
906 /* Search for the nearest available frequency */
907 for (i = 0; i < 7; i++) {
908 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
909 break;
910 }
911
912 mutex_lock(&data->update_lock);
913 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
914 data->fan_ctl |= i << 4;
915 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
916 mutex_unlock(&data->update_lock);
917
918 return count;
919}
920static ssize_t show_pwm_temp_map(struct device *dev,
921 struct device_attribute *attr, char *buf)
922{
923 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
924 int nr = sensor_attr->index;
925
926 struct it87_data *data = it87_update_device(dev);
927 int map;
928
929 if (data->pwm_temp_map[nr] < 3)
930 map = 1 << data->pwm_temp_map[nr];
931 else
932 map = 0; /* Should never happen */
933 return sprintf(buf, "%d\n", map);
934}
935static ssize_t set_pwm_temp_map(struct device *dev,
936 struct device_attribute *attr, const char *buf, size_t count)
937{
938 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
939 int nr = sensor_attr->index;
940
941 struct it87_data *data = dev_get_drvdata(dev);
942 long val;
943 u8 reg;
944
945 /* This check can go away if we ever support automatic fan speed
946 control on newer chips. */
947 if (!has_old_autopwm(data)) {
948 dev_notice(dev, "Mapping change disabled for safety reasons\n");
949 return -EINVAL;
950 }
951
952 if (strict_strtol(buf, 10, &val) < 0)
953 return -EINVAL;
954
955 switch (val) {
956 case (1 << 0):
957 reg = 0x00;
958 break;
959 case (1 << 1):
960 reg = 0x01;
961 break;
962 case (1 << 2):
963 reg = 0x02;
964 break;
965 default:
966 return -EINVAL;
967 }
968
969 mutex_lock(&data->update_lock);
970 data->pwm_temp_map[nr] = reg;
971 /* If we are in automatic mode, write the temp mapping immediately;
972 * otherwise, just store it for later use. */
973 if (data->pwm_ctrl[nr] & 0x80) {
974 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
975 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
976 }
977 mutex_unlock(&data->update_lock);
978 return count;
979}
980
981static ssize_t show_auto_pwm(struct device *dev,
982 struct device_attribute *attr, char *buf)
983{
984 struct it87_data *data = it87_update_device(dev);
985 struct sensor_device_attribute_2 *sensor_attr =
986 to_sensor_dev_attr_2(attr);
987 int nr = sensor_attr->nr;
988 int point = sensor_attr->index;
989
990 return sprintf(buf, "%d\n",
991 pwm_from_reg(data, data->auto_pwm[nr][point]));
992}
993
994static ssize_t set_auto_pwm(struct device *dev,
995 struct device_attribute *attr, const char *buf, size_t count)
996{
997 struct it87_data *data = dev_get_drvdata(dev);
998 struct sensor_device_attribute_2 *sensor_attr =
999 to_sensor_dev_attr_2(attr);
1000 int nr = sensor_attr->nr;
1001 int point = sensor_attr->index;
1002 long val;
1003
1004 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1005 return -EINVAL;
1006
1007 mutex_lock(&data->update_lock);
1008 data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1009 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1010 data->auto_pwm[nr][point]);
1011 mutex_unlock(&data->update_lock);
1012 return count;
1013}
1014
1015static ssize_t show_auto_temp(struct device *dev,
1016 struct device_attribute *attr, char *buf)
1017{
1018 struct it87_data *data = it87_update_device(dev);
1019 struct sensor_device_attribute_2 *sensor_attr =
1020 to_sensor_dev_attr_2(attr);
1021 int nr = sensor_attr->nr;
1022 int point = sensor_attr->index;
1023
1024 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1025}
1026
1027static ssize_t set_auto_temp(struct device *dev,
1028 struct device_attribute *attr, const char *buf, size_t count)
1029{
1030 struct it87_data *data = dev_get_drvdata(dev);
1031 struct sensor_device_attribute_2 *sensor_attr =
1032 to_sensor_dev_attr_2(attr);
1033 int nr = sensor_attr->nr;
1034 int point = sensor_attr->index;
1035 long val;
1036
1037 if (strict_strtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1038 return -EINVAL;
1039
1040 mutex_lock(&data->update_lock);
1041 data->auto_temp[nr][point] = TEMP_TO_REG(val);
1042 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1043 data->auto_temp[nr][point]);
1044 mutex_unlock(&data->update_lock);
1045 return count;
1046}
1047
1048#define show_fan_offset(offset) \
1049static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
1050 show_fan, NULL, offset - 1); \
1051static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
1052 show_fan_min, set_fan_min, offset - 1); \
1053static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
1054 show_fan_div, set_fan_div, offset - 1);
1055
1056show_fan_offset(1);
1057show_fan_offset(2);
1058show_fan_offset(3);
1059
1060#define show_pwm_offset(offset) \
1061static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
1062 show_pwm_enable, set_pwm_enable, offset - 1); \
1063static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
1064 show_pwm, set_pwm, offset - 1); \
1065static DEVICE_ATTR(pwm##offset##_freq, \
1066 (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \
1067 show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); \
1068static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels_temp, \
1069 S_IRUGO | S_IWUSR, show_pwm_temp_map, set_pwm_temp_map, \
1070 offset - 1); \
1071static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_pwm, \
1072 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1073 offset - 1, 0); \
1074static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_pwm, \
1075 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1076 offset - 1, 1); \
1077static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_pwm, \
1078 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1079 offset - 1, 2); \
1080static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_pwm, \
1081 S_IRUGO, show_auto_pwm, NULL, offset - 1, 3); \
1082static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp, \
1083 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1084 offset - 1, 1); \
1085static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp_hyst, \
1086 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1087 offset - 1, 0); \
1088static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_temp, \
1089 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1090 offset - 1, 2); \
1091static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_temp, \
1092 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1093 offset - 1, 3); \
1094static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_temp, \
1095 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1096 offset - 1, 4);
1097
1098show_pwm_offset(1);
1099show_pwm_offset(2);
1100show_pwm_offset(3);
1101
1102/* A different set of callbacks for 16-bit fans */
1103static ssize_t show_fan16(struct device *dev, struct device_attribute *attr,
1104 char *buf)
1105{
1106 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1107 int nr = sensor_attr->index;
1108 struct it87_data *data = it87_update_device(dev);
1109 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr]));
1110}
1111
1112static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr,
1113 char *buf)
1114{
1115 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1116 int nr = sensor_attr->index;
1117 struct it87_data *data = it87_update_device(dev);
1118 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr]));
1119}
1120
1121static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr,
1122 const char *buf, size_t count)
1123{
1124 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1125 int nr = sensor_attr->index;
1126 struct it87_data *data = dev_get_drvdata(dev);
1127 long val;
1128
1129 if (strict_strtol(buf, 10, &val) < 0)
1130 return -EINVAL;
1131
1132 mutex_lock(&data->update_lock);
1133 data->fan_min[nr] = FAN16_TO_REG(val);
1134 it87_write_value(data, IT87_REG_FAN_MIN[nr],
1135 data->fan_min[nr] & 0xff);
1136 it87_write_value(data, IT87_REG_FANX_MIN[nr],
1137 data->fan_min[nr] >> 8);
1138 mutex_unlock(&data->update_lock);
1139 return count;
1140}
1141
1142/* We want to use the same sysfs file names as 8-bit fans, but we need
1143 different variable names, so we have to use SENSOR_ATTR instead of
1144 SENSOR_DEVICE_ATTR. */
1145#define show_fan16_offset(offset) \
1146static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \
1147 = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \
1148 show_fan16, NULL, offset - 1); \
1149static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \
1150 = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
1151 show_fan16_min, set_fan16_min, offset - 1)
1152
1153show_fan16_offset(1);
1154show_fan16_offset(2);
1155show_fan16_offset(3);
1156show_fan16_offset(4);
1157show_fan16_offset(5);
1158
1159/* Alarms */
1160static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1161 char *buf)
1162{
1163 struct it87_data *data = it87_update_device(dev);
1164 return sprintf(buf, "%u\n", data->alarms);
1165}
1166static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1167
1168static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1169 char *buf)
1170{
1171 int bitnr = to_sensor_dev_attr(attr)->index;
1172 struct it87_data *data = it87_update_device(dev);
1173 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1174}
1175
1176static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1177 *attr, const char *buf, size_t count)
1178{
1179 struct it87_data *data = dev_get_drvdata(dev);
1180 long val;
1181 int config;
1182
1183 if (strict_strtol(buf, 10, &val) < 0 || val != 0)
1184 return -EINVAL;
1185
1186 mutex_lock(&data->update_lock);
1187 config = it87_read_value(data, IT87_REG_CONFIG);
1188 if (config < 0) {
1189 count = config;
1190 } else {
1191 config |= 1 << 5;
1192 it87_write_value(data, IT87_REG_CONFIG, config);
1193 /* Invalidate cache to force re-read */
1194 data->valid = 0;
1195 }
1196 mutex_unlock(&data->update_lock);
1197
1198 return count;
1199}
1200
1201static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1202static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1203static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1204static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1205static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1206static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1207static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1208static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1209static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1210static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1211static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1212static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1213static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1214static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1215static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1216static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1217static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1218 show_alarm, clear_intrusion, 4);
1219
1220static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1221 char *buf)
1222{
1223 int bitnr = to_sensor_dev_attr(attr)->index;
1224 struct it87_data *data = it87_update_device(dev);
1225 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1226}
1227static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1228 const char *buf, size_t count)
1229{
1230 int bitnr = to_sensor_dev_attr(attr)->index;
1231 struct it87_data *data = dev_get_drvdata(dev);
1232 long val;
1233
1234 if (strict_strtol(buf, 10, &val) < 0
1235 || (val != 0 && val != 1))
1236 return -EINVAL;
1237
1238 mutex_lock(&data->update_lock);
1239 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1240 if (val)
1241 data->beeps |= (1 << bitnr);
1242 else
1243 data->beeps &= ~(1 << bitnr);
1244 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1245 mutex_unlock(&data->update_lock);
1246 return count;
1247}
1248
1249static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1250 show_beep, set_beep, 1);
1251static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1252static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1253static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1254static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1255static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1256static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1257static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1258/* fanX_beep writability is set later */
1259static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1260static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1261static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1262static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1263static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1264static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1265 show_beep, set_beep, 2);
1266static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1267static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1268
1269static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1270 char *buf)
1271{
1272 struct it87_data *data = dev_get_drvdata(dev);
1273 return sprintf(buf, "%u\n", data->vrm);
1274}
1275static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1276 const char *buf, size_t count)
1277{
1278 struct it87_data *data = dev_get_drvdata(dev);
1279 unsigned long val;
1280
1281 if (strict_strtoul(buf, 10, &val) < 0)
1282 return -EINVAL;
1283
1284 data->vrm = val;
1285
1286 return count;
1287}
1288static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1289
1290static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1291 char *buf)
1292{
1293 struct it87_data *data = it87_update_device(dev);
1294 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1295}
1296static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1297
1298static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1299 char *buf)
1300{
1301 static const char *labels[] = {
1302 "+5V",
1303 "5VSB",
1304 "Vbat",
1305 };
1306 static const char *labels_it8721[] = {
1307 "+3.3V",
1308 "3VSB",
1309 "Vbat",
1310 };
1311 struct it87_data *data = dev_get_drvdata(dev);
1312 int nr = to_sensor_dev_attr(attr)->index;
1313
1314 return sprintf(buf, "%s\n", data->type == it8721 ? labels_it8721[nr]
1315 : labels[nr]);
1316}
1317static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1318static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1319static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1320
1321static ssize_t show_name(struct device *dev, struct device_attribute
1322 *devattr, char *buf)
1323{
1324 struct it87_data *data = dev_get_drvdata(dev);
1325 return sprintf(buf, "%s\n", data->name);
1326}
1327static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1328
1329static struct attribute *it87_attributes[] = {
1330 &sensor_dev_attr_in0_input.dev_attr.attr,
1331 &sensor_dev_attr_in1_input.dev_attr.attr,
1332 &sensor_dev_attr_in2_input.dev_attr.attr,
1333 &sensor_dev_attr_in3_input.dev_attr.attr,
1334 &sensor_dev_attr_in4_input.dev_attr.attr,
1335 &sensor_dev_attr_in5_input.dev_attr.attr,
1336 &sensor_dev_attr_in6_input.dev_attr.attr,
1337 &sensor_dev_attr_in7_input.dev_attr.attr,
1338 &sensor_dev_attr_in8_input.dev_attr.attr,
1339 &sensor_dev_attr_in0_min.dev_attr.attr,
1340 &sensor_dev_attr_in1_min.dev_attr.attr,
1341 &sensor_dev_attr_in2_min.dev_attr.attr,
1342 &sensor_dev_attr_in3_min.dev_attr.attr,
1343 &sensor_dev_attr_in4_min.dev_attr.attr,
1344 &sensor_dev_attr_in5_min.dev_attr.attr,
1345 &sensor_dev_attr_in6_min.dev_attr.attr,
1346 &sensor_dev_attr_in7_min.dev_attr.attr,
1347 &sensor_dev_attr_in0_max.dev_attr.attr,
1348 &sensor_dev_attr_in1_max.dev_attr.attr,
1349 &sensor_dev_attr_in2_max.dev_attr.attr,
1350 &sensor_dev_attr_in3_max.dev_attr.attr,
1351 &sensor_dev_attr_in4_max.dev_attr.attr,
1352 &sensor_dev_attr_in5_max.dev_attr.attr,
1353 &sensor_dev_attr_in6_max.dev_attr.attr,
1354 &sensor_dev_attr_in7_max.dev_attr.attr,
1355 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1356 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1357 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1358 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1359 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1360 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1361 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1362 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1363
1364 &sensor_dev_attr_temp1_input.dev_attr.attr,
1365 &sensor_dev_attr_temp2_input.dev_attr.attr,
1366 &sensor_dev_attr_temp3_input.dev_attr.attr,
1367 &sensor_dev_attr_temp1_max.dev_attr.attr,
1368 &sensor_dev_attr_temp2_max.dev_attr.attr,
1369 &sensor_dev_attr_temp3_max.dev_attr.attr,
1370 &sensor_dev_attr_temp1_min.dev_attr.attr,
1371 &sensor_dev_attr_temp2_min.dev_attr.attr,
1372 &sensor_dev_attr_temp3_min.dev_attr.attr,
1373 &sensor_dev_attr_temp1_type.dev_attr.attr,
1374 &sensor_dev_attr_temp2_type.dev_attr.attr,
1375 &sensor_dev_attr_temp3_type.dev_attr.attr,
1376 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1377 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1378 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1379
1380 &dev_attr_alarms.attr,
1381 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1382 &dev_attr_name.attr,
1383 NULL
1384};
1385
1386static const struct attribute_group it87_group = {
1387 .attrs = it87_attributes,
1388};
1389
1390static struct attribute *it87_attributes_beep[] = {
1391 &sensor_dev_attr_in0_beep.dev_attr.attr,
1392 &sensor_dev_attr_in1_beep.dev_attr.attr,
1393 &sensor_dev_attr_in2_beep.dev_attr.attr,
1394 &sensor_dev_attr_in3_beep.dev_attr.attr,
1395 &sensor_dev_attr_in4_beep.dev_attr.attr,
1396 &sensor_dev_attr_in5_beep.dev_attr.attr,
1397 &sensor_dev_attr_in6_beep.dev_attr.attr,
1398 &sensor_dev_attr_in7_beep.dev_attr.attr,
1399
1400 &sensor_dev_attr_temp1_beep.dev_attr.attr,
1401 &sensor_dev_attr_temp2_beep.dev_attr.attr,
1402 &sensor_dev_attr_temp3_beep.dev_attr.attr,
1403 NULL
1404};
1405
1406static const struct attribute_group it87_group_beep = {
1407 .attrs = it87_attributes_beep,
1408};
1409
1410static struct attribute *it87_attributes_fan16[5][3+1] = { {
1411 &sensor_dev_attr_fan1_input16.dev_attr.attr,
1412 &sensor_dev_attr_fan1_min16.dev_attr.attr,
1413 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1414 NULL
1415}, {
1416 &sensor_dev_attr_fan2_input16.dev_attr.attr,
1417 &sensor_dev_attr_fan2_min16.dev_attr.attr,
1418 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1419 NULL
1420}, {
1421 &sensor_dev_attr_fan3_input16.dev_attr.attr,
1422 &sensor_dev_attr_fan3_min16.dev_attr.attr,
1423 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1424 NULL
1425}, {
1426 &sensor_dev_attr_fan4_input16.dev_attr.attr,
1427 &sensor_dev_attr_fan4_min16.dev_attr.attr,
1428 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1429 NULL
1430}, {
1431 &sensor_dev_attr_fan5_input16.dev_attr.attr,
1432 &sensor_dev_attr_fan5_min16.dev_attr.attr,
1433 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1434 NULL
1435} };
1436
1437static const struct attribute_group it87_group_fan16[5] = {
1438 { .attrs = it87_attributes_fan16[0] },
1439 { .attrs = it87_attributes_fan16[1] },
1440 { .attrs = it87_attributes_fan16[2] },
1441 { .attrs = it87_attributes_fan16[3] },
1442 { .attrs = it87_attributes_fan16[4] },
1443};
1444
1445static struct attribute *it87_attributes_fan[3][4+1] = { {
1446 &sensor_dev_attr_fan1_input.dev_attr.attr,
1447 &sensor_dev_attr_fan1_min.dev_attr.attr,
1448 &sensor_dev_attr_fan1_div.dev_attr.attr,
1449 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1450 NULL
1451}, {
1452 &sensor_dev_attr_fan2_input.dev_attr.attr,
1453 &sensor_dev_attr_fan2_min.dev_attr.attr,
1454 &sensor_dev_attr_fan2_div.dev_attr.attr,
1455 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1456 NULL
1457}, {
1458 &sensor_dev_attr_fan3_input.dev_attr.attr,
1459 &sensor_dev_attr_fan3_min.dev_attr.attr,
1460 &sensor_dev_attr_fan3_div.dev_attr.attr,
1461 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1462 NULL
1463} };
1464
1465static const struct attribute_group it87_group_fan[3] = {
1466 { .attrs = it87_attributes_fan[0] },
1467 { .attrs = it87_attributes_fan[1] },
1468 { .attrs = it87_attributes_fan[2] },
1469};
1470
1471static const struct attribute_group *
1472it87_get_fan_group(const struct it87_data *data)
1473{
1474 return has_16bit_fans(data) ? it87_group_fan16 : it87_group_fan;
1475}
1476
1477static struct attribute *it87_attributes_pwm[3][4+1] = { {
1478 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1479 &sensor_dev_attr_pwm1.dev_attr.attr,
1480 &dev_attr_pwm1_freq.attr,
1481 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1482 NULL
1483}, {
1484 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1485 &sensor_dev_attr_pwm2.dev_attr.attr,
1486 &dev_attr_pwm2_freq.attr,
1487 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1488 NULL
1489}, {
1490 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1491 &sensor_dev_attr_pwm3.dev_attr.attr,
1492 &dev_attr_pwm3_freq.attr,
1493 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1494 NULL
1495} };
1496
1497static const struct attribute_group it87_group_pwm[3] = {
1498 { .attrs = it87_attributes_pwm[0] },
1499 { .attrs = it87_attributes_pwm[1] },
1500 { .attrs = it87_attributes_pwm[2] },
1501};
1502
1503static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1504 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1505 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1506 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1507 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1508 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1509 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1510 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1511 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1512 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1513 NULL
1514}, {
1515 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1516 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1517 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1518 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1519 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1520 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1521 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1522 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1523 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1524 NULL
1525}, {
1526 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1527 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1528 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1529 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1530 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1531 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1532 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1533 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1534 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1535 NULL
1536} };
1537
1538static const struct attribute_group it87_group_autopwm[3] = {
1539 { .attrs = it87_attributes_autopwm[0] },
1540 { .attrs = it87_attributes_autopwm[1] },
1541 { .attrs = it87_attributes_autopwm[2] },
1542};
1543
1544static struct attribute *it87_attributes_fan_beep[] = {
1545 &sensor_dev_attr_fan1_beep.dev_attr.attr,
1546 &sensor_dev_attr_fan2_beep.dev_attr.attr,
1547 &sensor_dev_attr_fan3_beep.dev_attr.attr,
1548 &sensor_dev_attr_fan4_beep.dev_attr.attr,
1549 &sensor_dev_attr_fan5_beep.dev_attr.attr,
1550};
1551
1552static struct attribute *it87_attributes_vid[] = {
1553 &dev_attr_vrm.attr,
1554 &dev_attr_cpu0_vid.attr,
1555 NULL
1556};
1557
1558static const struct attribute_group it87_group_vid = {
1559 .attrs = it87_attributes_vid,
1560};
1561
1562static struct attribute *it87_attributes_label[] = {
1563 &sensor_dev_attr_in3_label.dev_attr.attr,
1564 &sensor_dev_attr_in7_label.dev_attr.attr,
1565 &sensor_dev_attr_in8_label.dev_attr.attr,
1566 NULL
1567};
1568
1569static const struct attribute_group it87_group_label = {
1570 .attrs = it87_attributes_label,
1571};
1572
1573/* SuperIO detection - will change isa_address if a chip is found */
1574static int __init it87_find(unsigned short *address,
1575 struct it87_sio_data *sio_data)
1576{
1577 int err;
1578 u16 chip_type;
1579 const char *board_vendor, *board_name;
1580
1581 err = superio_enter();
1582 if (err)
1583 return err;
1584
1585 err = -ENODEV;
1586 chip_type = force_id ? force_id : superio_inw(DEVID);
1587
1588 switch (chip_type) {
1589 case IT8705F_DEVID:
1590 sio_data->type = it87;
1591 break;
1592 case IT8712F_DEVID:
1593 sio_data->type = it8712;
1594 break;
1595 case IT8716F_DEVID:
1596 case IT8726F_DEVID:
1597 sio_data->type = it8716;
1598 break;
1599 case IT8718F_DEVID:
1600 sio_data->type = it8718;
1601 break;
1602 case IT8720F_DEVID:
1603 sio_data->type = it8720;
1604 break;
1605 case IT8721F_DEVID:
1606 sio_data->type = it8721;
1607 break;
1608 case 0xffff: /* No device at all */
1609 goto exit;
1610 default:
1611 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1612 goto exit;
1613 }
1614
1615 superio_select(PME);
1616 if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1617 pr_info("Device not activated, skipping\n");
1618 goto exit;
1619 }
1620
1621 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1622 if (*address == 0) {
1623 pr_info("Base address not set, skipping\n");
1624 goto exit;
1625 }
1626
1627 err = 0;
1628 sio_data->revision = superio_inb(DEVREV) & 0x0f;
1629 pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1630 chip_type, *address, sio_data->revision);
1631
1632 /* in8 (Vbat) is always internal */
1633 sio_data->internal = (1 << 2);
1634
1635 /* Read GPIO config and VID value from LDN 7 (GPIO) */
1636 if (sio_data->type == it87) {
1637 /* The IT8705F doesn't have VID pins at all */
1638 sio_data->skip_vid = 1;
1639
1640 /* The IT8705F has a different LD number for GPIO */
1641 superio_select(5);
1642 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1643 } else {
1644 int reg;
1645
1646 superio_select(GPIO);
1647
1648 reg = superio_inb(IT87_SIO_GPIO3_REG);
1649 if (sio_data->type == it8721) {
1650 /* The IT8721F/IT8758E doesn't have VID pins at all */
1651 sio_data->skip_vid = 1;
1652 } else {
1653 /* We need at least 4 VID pins */
1654 if (reg & 0x0f) {
1655 pr_info("VID is disabled (pins used for GPIO)\n");
1656 sio_data->skip_vid = 1;
1657 }
1658 }
1659
1660 /* Check if fan3 is there or not */
1661 if (reg & (1 << 6))
1662 sio_data->skip_pwm |= (1 << 2);
1663 if (reg & (1 << 7))
1664 sio_data->skip_fan |= (1 << 2);
1665
1666 /* Check if fan2 is there or not */
1667 reg = superio_inb(IT87_SIO_GPIO5_REG);
1668 if (reg & (1 << 1))
1669 sio_data->skip_pwm |= (1 << 1);
1670 if (reg & (1 << 2))
1671 sio_data->skip_fan |= (1 << 1);
1672
1673 if ((sio_data->type == it8718 || sio_data->type == it8720)
1674 && !(sio_data->skip_vid))
1675 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1676
1677 reg = superio_inb(IT87_SIO_PINX2_REG);
1678 /*
1679 * The IT8720F has no VIN7 pin, so VCCH should always be
1680 * routed internally to VIN7 with an internal divider.
1681 * Curiously, there still is a configuration bit to control
1682 * this, which means it can be set incorrectly. And even
1683 * more curiously, many boards out there are improperly
1684 * configured, even though the IT8720F datasheet claims
1685 * that the internal routing of VCCH to VIN7 is the default
1686 * setting. So we force the internal routing in this case.
1687 */
1688 if (sio_data->type == it8720 && !(reg & (1 << 1))) {
1689 reg |= (1 << 1);
1690 superio_outb(IT87_SIO_PINX2_REG, reg);
1691 pr_notice("Routing internal VCCH to in7\n");
1692 }
1693 if (reg & (1 << 0))
1694 sio_data->internal |= (1 << 0);
1695 if ((reg & (1 << 1)) || sio_data->type == it8721)
1696 sio_data->internal |= (1 << 1);
1697
1698 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1699 }
1700 if (sio_data->beep_pin)
1701 pr_info("Beeping is supported\n");
1702
1703 /* Disable specific features based on DMI strings */
1704 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1705 board_name = dmi_get_system_info(DMI_BOARD_NAME);
1706 if (board_vendor && board_name) {
1707 if (strcmp(board_vendor, "nVIDIA") == 0
1708 && strcmp(board_name, "FN68PT") == 0) {
1709 /* On the Shuttle SN68PT, FAN_CTL2 is apparently not
1710 connected to a fan, but to something else. One user
1711 has reported instant system power-off when changing
1712 the PWM2 duty cycle, so we disable it.
1713 I use the board name string as the trigger in case
1714 the same board is ever used in other systems. */
1715 pr_info("Disabling pwm2 due to hardware constraints\n");
1716 sio_data->skip_pwm = (1 << 1);
1717 }
1718 }
1719
1720exit:
1721 superio_exit();
1722 return err;
1723}
1724
1725static void it87_remove_files(struct device *dev)
1726{
1727 struct it87_data *data = platform_get_drvdata(pdev);
1728 struct it87_sio_data *sio_data = dev->platform_data;
1729 const struct attribute_group *fan_group = it87_get_fan_group(data);
1730 int i;
1731
1732 sysfs_remove_group(&dev->kobj, &it87_group);
1733 if (sio_data->beep_pin)
1734 sysfs_remove_group(&dev->kobj, &it87_group_beep);
1735 for (i = 0; i < 5; i++) {
1736 if (!(data->has_fan & (1 << i)))
1737 continue;
1738 sysfs_remove_group(&dev->kobj, &fan_group[i]);
1739 if (sio_data->beep_pin)
1740 sysfs_remove_file(&dev->kobj,
1741 it87_attributes_fan_beep[i]);
1742 }
1743 for (i = 0; i < 3; i++) {
1744 if (sio_data->skip_pwm & (1 << 0))
1745 continue;
1746 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
1747 if (has_old_autopwm(data))
1748 sysfs_remove_group(&dev->kobj,
1749 &it87_group_autopwm[i]);
1750 }
1751 if (!sio_data->skip_vid)
1752 sysfs_remove_group(&dev->kobj, &it87_group_vid);
1753 sysfs_remove_group(&dev->kobj, &it87_group_label);
1754}
1755
1756static int __devinit it87_probe(struct platform_device *pdev)
1757{
1758 struct it87_data *data;
1759 struct resource *res;
1760 struct device *dev = &pdev->dev;
1761 struct it87_sio_data *sio_data = dev->platform_data;
1762 const struct attribute_group *fan_group;
1763 int err = 0, i;
1764 int enable_pwm_interface;
1765 int fan_beep_need_rw;
1766 static const char *names[] = {
1767 "it87",
1768 "it8712",
1769 "it8716",
1770 "it8718",
1771 "it8720",
1772 "it8721",
1773 };
1774
1775 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1776 if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) {
1777 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1778 (unsigned long)res->start,
1779 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
1780 err = -EBUSY;
1781 goto ERROR0;
1782 }
1783
1784 data = kzalloc(sizeof(struct it87_data), GFP_KERNEL);
1785 if (!data) {
1786 err = -ENOMEM;
1787 goto ERROR1;
1788 }
1789
1790 data->addr = res->start;
1791 data->type = sio_data->type;
1792 data->revision = sio_data->revision;
1793 data->name = names[sio_data->type];
1794
1795 /* Now, we do the remaining detection. */
1796 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
1797 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
1798 err = -ENODEV;
1799 goto ERROR2;
1800 }
1801
1802 platform_set_drvdata(pdev, data);
1803
1804 mutex_init(&data->update_lock);
1805
1806 /* Check PWM configuration */
1807 enable_pwm_interface = it87_check_pwm(dev);
1808
1809 /* Starting with IT8721F, we handle scaling of internal voltages */
1810 if (data->type == it8721) {
1811 if (sio_data->internal & (1 << 0))
1812 data->in_scaled |= (1 << 3); /* in3 is AVCC */
1813 if (sio_data->internal & (1 << 1))
1814 data->in_scaled |= (1 << 7); /* in7 is VSB */
1815 if (sio_data->internal & (1 << 2))
1816 data->in_scaled |= (1 << 8); /* in8 is Vbat */
1817 }
1818
1819 /* Initialize the IT87 chip */
1820 it87_init_device(pdev);
1821
1822 /* Register sysfs hooks */
1823 err = sysfs_create_group(&dev->kobj, &it87_group);
1824 if (err)
1825 goto ERROR2;
1826
1827 if (sio_data->beep_pin) {
1828 err = sysfs_create_group(&dev->kobj, &it87_group_beep);
1829 if (err)
1830 goto ERROR4;
1831 }
1832
1833 /* Do not create fan files for disabled fans */
1834 fan_group = it87_get_fan_group(data);
1835 fan_beep_need_rw = 1;
1836 for (i = 0; i < 5; i++) {
1837 if (!(data->has_fan & (1 << i)))
1838 continue;
1839 err = sysfs_create_group(&dev->kobj, &fan_group[i]);
1840 if (err)
1841 goto ERROR4;
1842
1843 if (sio_data->beep_pin) {
1844 err = sysfs_create_file(&dev->kobj,
1845 it87_attributes_fan_beep[i]);
1846 if (err)
1847 goto ERROR4;
1848 if (!fan_beep_need_rw)
1849 continue;
1850
1851 /* As we have a single beep enable bit for all fans,
1852 * only the first enabled fan has a writable attribute
1853 * for it. */
1854 if (sysfs_chmod_file(&dev->kobj,
1855 it87_attributes_fan_beep[i],
1856 S_IRUGO | S_IWUSR))
1857 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
1858 i + 1);
1859 fan_beep_need_rw = 0;
1860 }
1861 }
1862
1863 if (enable_pwm_interface) {
1864 for (i = 0; i < 3; i++) {
1865 if (sio_data->skip_pwm & (1 << i))
1866 continue;
1867 err = sysfs_create_group(&dev->kobj,
1868 &it87_group_pwm[i]);
1869 if (err)
1870 goto ERROR4;
1871
1872 if (!has_old_autopwm(data))
1873 continue;
1874 err = sysfs_create_group(&dev->kobj,
1875 &it87_group_autopwm[i]);
1876 if (err)
1877 goto ERROR4;
1878 }
1879 }
1880
1881 if (!sio_data->skip_vid) {
1882 data->vrm = vid_which_vrm();
1883 /* VID reading from Super-I/O config space if available */
1884 data->vid = sio_data->vid_value;
1885 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
1886 if (err)
1887 goto ERROR4;
1888 }
1889
1890 /* Export labels for internal sensors */
1891 for (i = 0; i < 3; i++) {
1892 if (!(sio_data->internal & (1 << i)))
1893 continue;
1894 err = sysfs_create_file(&dev->kobj,
1895 it87_attributes_label[i]);
1896 if (err)
1897 goto ERROR4;
1898 }
1899
1900 data->hwmon_dev = hwmon_device_register(dev);
1901 if (IS_ERR(data->hwmon_dev)) {
1902 err = PTR_ERR(data->hwmon_dev);
1903 goto ERROR4;
1904 }
1905
1906 return 0;
1907
1908ERROR4:
1909 it87_remove_files(dev);
1910ERROR2:
1911 platform_set_drvdata(pdev, NULL);
1912 kfree(data);
1913ERROR1:
1914 release_region(res->start, IT87_EC_EXTENT);
1915ERROR0:
1916 return err;
1917}
1918
1919static int __devexit it87_remove(struct platform_device *pdev)
1920{
1921 struct it87_data *data = platform_get_drvdata(pdev);
1922
1923 hwmon_device_unregister(data->hwmon_dev);
1924 it87_remove_files(&pdev->dev);
1925
1926 release_region(data->addr, IT87_EC_EXTENT);
1927 platform_set_drvdata(pdev, NULL);
1928 kfree(data);
1929
1930 return 0;
1931}
1932
1933/* Must be called with data->update_lock held, except during initialization.
1934 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1935 would slow down the IT87 access and should not be necessary. */
1936static int it87_read_value(struct it87_data *data, u8 reg)
1937{
1938 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1939 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
1940}
1941
1942/* Must be called with data->update_lock held, except during initialization.
1943 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1944 would slow down the IT87 access and should not be necessary. */
1945static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
1946{
1947 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1948 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
1949}
1950
1951/* Return 1 if and only if the PWM interface is safe to use */
1952static int __devinit it87_check_pwm(struct device *dev)
1953{
1954 struct it87_data *data = dev_get_drvdata(dev);
1955 /* Some BIOSes fail to correctly configure the IT87 fans. All fans off
1956 * and polarity set to active low is sign that this is the case so we
1957 * disable pwm control to protect the user. */
1958 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
1959 if ((tmp & 0x87) == 0) {
1960 if (fix_pwm_polarity) {
1961 /* The user asks us to attempt a chip reconfiguration.
1962 * This means switching to active high polarity and
1963 * inverting all fan speed values. */
1964 int i;
1965 u8 pwm[3];
1966
1967 for (i = 0; i < 3; i++)
1968 pwm[i] = it87_read_value(data,
1969 IT87_REG_PWM(i));
1970
1971 /* If any fan is in automatic pwm mode, the polarity
1972 * might be correct, as suspicious as it seems, so we
1973 * better don't change anything (but still disable the
1974 * PWM interface). */
1975 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
1976 dev_info(dev, "Reconfiguring PWM to "
1977 "active high polarity\n");
1978 it87_write_value(data, IT87_REG_FAN_CTL,
1979 tmp | 0x87);
1980 for (i = 0; i < 3; i++)
1981 it87_write_value(data,
1982 IT87_REG_PWM(i),
1983 0x7f & ~pwm[i]);
1984 return 1;
1985 }
1986
1987 dev_info(dev, "PWM configuration is "
1988 "too broken to be fixed\n");
1989 }
1990
1991 dev_info(dev, "Detected broken BIOS "
1992 "defaults, disabling PWM interface\n");
1993 return 0;
1994 } else if (fix_pwm_polarity) {
1995 dev_info(dev, "PWM configuration looks "
1996 "sane, won't touch\n");
1997 }
1998
1999 return 1;
2000}
2001
2002/* Called when we have found a new IT87. */
2003static void __devinit it87_init_device(struct platform_device *pdev)
2004{
2005 struct it87_sio_data *sio_data = pdev->dev.platform_data;
2006 struct it87_data *data = platform_get_drvdata(pdev);
2007 int tmp, i;
2008 u8 mask;
2009
2010 /* For each PWM channel:
2011 * - If it is in automatic mode, setting to manual mode should set
2012 * the fan to full speed by default.
2013 * - If it is in manual mode, we need a mapping to temperature
2014 * channels to use when later setting to automatic mode later.
2015 * Use a 1:1 mapping by default (we are clueless.)
2016 * In both cases, the value can (and should) be changed by the user
2017 * prior to switching to a different mode.
2018 * Note that this is no longer needed for the IT8721F and later, as
2019 * these have separate registers for the temperature mapping and the
2020 * manual duty cycle. */
2021 for (i = 0; i < 3; i++) {
2022 data->pwm_temp_map[i] = i;
2023 data->pwm_duty[i] = 0x7f; /* Full speed */
2024 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
2025 }
2026
2027 /* Some chips seem to have default value 0xff for all limit
2028 * registers. For low voltage limits it makes no sense and triggers
2029 * alarms, so change to 0 instead. For high temperature limits, it
2030 * means -1 degree C, which surprisingly doesn't trigger an alarm,
2031 * but is still confusing, so change to 127 degrees C. */
2032 for (i = 0; i < 8; i++) {
2033 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2034 if (tmp == 0xff)
2035 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2036 }
2037 for (i = 0; i < 3; i++) {
2038 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2039 if (tmp == 0xff)
2040 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2041 }
2042
2043 /* Temperature channels are not forcibly enabled, as they can be
2044 * set to two different sensor types and we can't guess which one
2045 * is correct for a given system. These channels can be enabled at
2046 * run-time through the temp{1-3}_type sysfs accessors if needed. */
2047
2048 /* Check if voltage monitors are reset manually or by some reason */
2049 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2050 if ((tmp & 0xff) == 0) {
2051 /* Enable all voltage monitors */
2052 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2053 }
2054
2055 /* Check if tachometers are reset manually or by some reason */
2056 mask = 0x70 & ~(sio_data->skip_fan << 4);
2057 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2058 if ((data->fan_main_ctrl & mask) == 0) {
2059 /* Enable all fan tachometers */
2060 data->fan_main_ctrl |= mask;
2061 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2062 data->fan_main_ctrl);
2063 }
2064 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2065
2066 /* Set tachometers to 16-bit mode if needed */
2067 if (has_16bit_fans(data)) {
2068 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2069 if (~tmp & 0x07 & data->has_fan) {
2070 dev_dbg(&pdev->dev,
2071 "Setting fan1-3 to 16-bit mode\n");
2072 it87_write_value(data, IT87_REG_FAN_16BIT,
2073 tmp | 0x07);
2074 }
2075 /* IT8705F only supports three fans. */
2076 if (data->type != it87) {
2077 if (tmp & (1 << 4))
2078 data->has_fan |= (1 << 3); /* fan4 enabled */
2079 if (tmp & (1 << 5))
2080 data->has_fan |= (1 << 4); /* fan5 enabled */
2081 }
2082 }
2083
2084 /* Fan input pins may be used for alternative functions */
2085 data->has_fan &= ~sio_data->skip_fan;
2086
2087 /* Start monitoring */
2088 it87_write_value(data, IT87_REG_CONFIG,
2089 (it87_read_value(data, IT87_REG_CONFIG) & 0x36)
2090 | (update_vbat ? 0x41 : 0x01));
2091}
2092
2093static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2094{
2095 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2096 if (data->type == it8721) {
2097 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2098 data->pwm_duty[nr] = it87_read_value(data,
2099 IT87_REG_PWM_DUTY(nr));
2100 } else {
2101 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
2102 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2103 else /* Manual mode */
2104 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2105 }
2106
2107 if (has_old_autopwm(data)) {
2108 int i;
2109
2110 for (i = 0; i < 5 ; i++)
2111 data->auto_temp[nr][i] = it87_read_value(data,
2112 IT87_REG_AUTO_TEMP(nr, i));
2113 for (i = 0; i < 3 ; i++)
2114 data->auto_pwm[nr][i] = it87_read_value(data,
2115 IT87_REG_AUTO_PWM(nr, i));
2116 }
2117}
2118
2119static struct it87_data *it87_update_device(struct device *dev)
2120{
2121 struct it87_data *data = dev_get_drvdata(dev);
2122 int i;
2123
2124 mutex_lock(&data->update_lock);
2125
2126 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2127 || !data->valid) {
2128 if (update_vbat) {
2129 /* Cleared after each update, so reenable. Value
2130 returned by this read will be previous value */
2131 it87_write_value(data, IT87_REG_CONFIG,
2132 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2133 }
2134 for (i = 0; i <= 7; i++) {
2135 data->in[i] =
2136 it87_read_value(data, IT87_REG_VIN(i));
2137 data->in_min[i] =
2138 it87_read_value(data, IT87_REG_VIN_MIN(i));
2139 data->in_max[i] =
2140 it87_read_value(data, IT87_REG_VIN_MAX(i));
2141 }
2142 /* in8 (battery) has no limit registers */
2143 data->in[8] = it87_read_value(data, IT87_REG_VIN(8));
2144
2145 for (i = 0; i < 5; i++) {
2146 /* Skip disabled fans */
2147 if (!(data->has_fan & (1 << i)))
2148 continue;
2149
2150 data->fan_min[i] =
2151 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2152 data->fan[i] = it87_read_value(data,
2153 IT87_REG_FAN[i]);
2154 /* Add high byte if in 16-bit mode */
2155 if (has_16bit_fans(data)) {
2156 data->fan[i] |= it87_read_value(data,
2157 IT87_REG_FANX[i]) << 8;
2158 data->fan_min[i] |= it87_read_value(data,
2159 IT87_REG_FANX_MIN[i]) << 8;
2160 }
2161 }
2162 for (i = 0; i < 3; i++) {
2163 data->temp[i] =
2164 it87_read_value(data, IT87_REG_TEMP(i));
2165 data->temp_high[i] =
2166 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2167 data->temp_low[i] =
2168 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2169 }
2170
2171 /* Newer chips don't have clock dividers */
2172 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2173 i = it87_read_value(data, IT87_REG_FAN_DIV);
2174 data->fan_div[0] = i & 0x07;
2175 data->fan_div[1] = (i >> 3) & 0x07;
2176 data->fan_div[2] = (i & 0x40) ? 3 : 1;
2177 }
2178
2179 data->alarms =
2180 it87_read_value(data, IT87_REG_ALARM1) |
2181 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2182 (it87_read_value(data, IT87_REG_ALARM3) << 16);
2183 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2184
2185 data->fan_main_ctrl = it87_read_value(data,
2186 IT87_REG_FAN_MAIN_CTRL);
2187 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2188 for (i = 0; i < 3; i++)
2189 it87_update_pwm_ctrl(data, i);
2190
2191 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2192 /* The 8705 does not have VID capability.
2193 The 8718 and later don't use IT87_REG_VID for the
2194 same purpose. */
2195 if (data->type == it8712 || data->type == it8716) {
2196 data->vid = it87_read_value(data, IT87_REG_VID);
2197 /* The older IT8712F revisions had only 5 VID pins,
2198 but we assume it is always safe to read 6 bits. */
2199 data->vid &= 0x3f;
2200 }
2201 data->last_updated = jiffies;
2202 data->valid = 1;
2203 }
2204
2205 mutex_unlock(&data->update_lock);
2206
2207 return data;
2208}
2209
2210static int __init it87_device_add(unsigned short address,
2211 const struct it87_sio_data *sio_data)
2212{
2213 struct resource res = {
2214 .start = address + IT87_EC_OFFSET,
2215 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2216 .name = DRVNAME,
2217 .flags = IORESOURCE_IO,
2218 };
2219 int err;
2220
2221 err = acpi_check_resource_conflict(&res);
2222 if (err)
2223 goto exit;
2224
2225 pdev = platform_device_alloc(DRVNAME, address);
2226 if (!pdev) {
2227 err = -ENOMEM;
2228 pr_err("Device allocation failed\n");
2229 goto exit;
2230 }
2231
2232 err = platform_device_add_resources(pdev, &res, 1);
2233 if (err) {
2234 pr_err("Device resource addition failed (%d)\n", err);
2235 goto exit_device_put;
2236 }
2237
2238 err = platform_device_add_data(pdev, sio_data,
2239 sizeof(struct it87_sio_data));
2240 if (err) {
2241 pr_err("Platform data allocation failed\n");
2242 goto exit_device_put;
2243 }
2244
2245 err = platform_device_add(pdev);
2246 if (err) {
2247 pr_err("Device addition failed (%d)\n", err);
2248 goto exit_device_put;
2249 }
2250
2251 return 0;
2252
2253exit_device_put:
2254 platform_device_put(pdev);
2255exit:
2256 return err;
2257}
2258
2259static int __init sm_it87_init(void)
2260{
2261 int err;
2262 unsigned short isa_address = 0;
2263 struct it87_sio_data sio_data;
2264
2265 memset(&sio_data, 0, sizeof(struct it87_sio_data));
2266 err = it87_find(&isa_address, &sio_data);
2267 if (err)
2268 return err;
2269 err = platform_driver_register(&it87_driver);
2270 if (err)
2271 return err;
2272
2273 err = it87_device_add(isa_address, &sio_data);
2274 if (err) {
2275 platform_driver_unregister(&it87_driver);
2276 return err;
2277 }
2278
2279 return 0;
2280}
2281
2282static void __exit sm_it87_exit(void)
2283{
2284 platform_device_unregister(pdev);
2285 platform_driver_unregister(&it87_driver);
2286}
2287
2288
2289MODULE_AUTHOR("Chris Gauthron, "
2290 "Jean Delvare <khali@linux-fr.org>");
2291MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2292module_param(update_vbat, bool, 0);
2293MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2294module_param(fix_pwm_polarity, bool, 0);
2295MODULE_PARM_DESC(fix_pwm_polarity,
2296 "Force PWM polarity to active high (DANGEROUS)");
2297MODULE_LICENSE("GPL");
2298
2299module_init(sm_it87_init);
2300module_exit(sm_it87_exit);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * it87.c - Part of lm_sensors, Linux kernel modules for hardware
4 * monitoring.
5 *
6 * The IT8705F is an LPC-based Super I/O part that contains UARTs, a
7 * parallel port, an IR port, a MIDI port, a floppy controller, etc., in
8 * addition to an Environment Controller (Enhanced Hardware Monitor and
9 * Fan Controller)
10 *
11 * This driver supports only the Environment Controller in the IT8705F and
12 * similar parts. The other devices are supported by different drivers.
13 *
14 * Supports: IT8603E Super I/O chip w/LPC interface
15 * IT8620E Super I/O chip w/LPC interface
16 * IT8622E Super I/O chip w/LPC interface
17 * IT8623E Super I/O chip w/LPC interface
18 * IT8628E Super I/O chip w/LPC interface
19 * IT8705F Super I/O chip w/LPC interface
20 * IT8712F Super I/O chip w/LPC interface
21 * IT8716F Super I/O chip w/LPC interface
22 * IT8718F Super I/O chip w/LPC interface
23 * IT8720F Super I/O chip w/LPC interface
24 * IT8721F Super I/O chip w/LPC interface
25 * IT8726F Super I/O chip w/LPC interface
26 * IT8728F Super I/O chip w/LPC interface
27 * IT8732F Super I/O chip w/LPC interface
28 * IT8758E Super I/O chip w/LPC interface
29 * IT8771E Super I/O chip w/LPC interface
30 * IT8772E Super I/O chip w/LPC interface
31 * IT8781F Super I/O chip w/LPC interface
32 * IT8782F Super I/O chip w/LPC interface
33 * IT8783E/F Super I/O chip w/LPC interface
34 * IT8786E Super I/O chip w/LPC interface
35 * IT8790E Super I/O chip w/LPC interface
36 * IT8792E Super I/O chip w/LPC interface
37 * IT87952E Super I/O chip w/LPC interface
38 * Sis950 A clone of the IT8705F
39 *
40 * Copyright (C) 2001 Chris Gauthron
41 * Copyright (C) 2005-2010 Jean Delvare <jdelvare@suse.de>
42 */
43
44#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
45
46#include <linux/bitops.h>
47#include <linux/module.h>
48#include <linux/init.h>
49#include <linux/slab.h>
50#include <linux/jiffies.h>
51#include <linux/platform_device.h>
52#include <linux/hwmon.h>
53#include <linux/hwmon-sysfs.h>
54#include <linux/hwmon-vid.h>
55#include <linux/err.h>
56#include <linux/mutex.h>
57#include <linux/sysfs.h>
58#include <linux/string.h>
59#include <linux/dmi.h>
60#include <linux/acpi.h>
61#include <linux/io.h>
62
63#define DRVNAME "it87"
64
65enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
66 it8771, it8772, it8781, it8782, it8783, it8786, it8790,
67 it8792, it8603, it8620, it8622, it8628, it87952 };
68
69static struct platform_device *it87_pdev[2];
70
71#define REG_2E 0x2e /* The register to read/write */
72#define REG_4E 0x4e /* Secondary register to read/write */
73
74#define DEV 0x07 /* Register: Logical device select */
75#define PME 0x04 /* The device with the fan registers in it */
76
77/* The device with the IT8718F/IT8720F VID value in it */
78#define GPIO 0x07
79
80#define DEVID 0x20 /* Register: Device ID */
81#define DEVREV 0x22 /* Register: Device Revision */
82
83static inline void __superio_enter(int ioreg)
84{
85 outb(0x87, ioreg);
86 outb(0x01, ioreg);
87 outb(0x55, ioreg);
88 outb(ioreg == REG_4E ? 0xaa : 0x55, ioreg);
89}
90
91static inline int superio_inb(int ioreg, int reg)
92{
93 outb(reg, ioreg);
94 return inb(ioreg + 1);
95}
96
97static inline void superio_outb(int ioreg, int reg, int val)
98{
99 outb(reg, ioreg);
100 outb(val, ioreg + 1);
101}
102
103static int superio_inw(int ioreg, int reg)
104{
105 int val;
106
107 outb(reg++, ioreg);
108 val = inb(ioreg + 1) << 8;
109 outb(reg, ioreg);
110 val |= inb(ioreg + 1);
111 return val;
112}
113
114static inline void superio_select(int ioreg, int ldn)
115{
116 outb(DEV, ioreg);
117 outb(ldn, ioreg + 1);
118}
119
120static inline int superio_enter(int ioreg)
121{
122 /*
123 * Try to reserve ioreg and ioreg + 1 for exclusive access.
124 */
125 if (!request_muxed_region(ioreg, 2, DRVNAME))
126 return -EBUSY;
127
128 __superio_enter(ioreg);
129 return 0;
130}
131
132static inline void superio_exit(int ioreg, bool noexit)
133{
134 if (!noexit) {
135 outb(0x02, ioreg);
136 outb(0x02, ioreg + 1);
137 }
138 release_region(ioreg, 2);
139}
140
141/* Logical device 4 registers */
142#define IT8712F_DEVID 0x8712
143#define IT8705F_DEVID 0x8705
144#define IT8716F_DEVID 0x8716
145#define IT8718F_DEVID 0x8718
146#define IT8720F_DEVID 0x8720
147#define IT8721F_DEVID 0x8721
148#define IT8726F_DEVID 0x8726
149#define IT8728F_DEVID 0x8728
150#define IT8732F_DEVID 0x8732
151#define IT8792E_DEVID 0x8733
152#define IT8771E_DEVID 0x8771
153#define IT8772E_DEVID 0x8772
154#define IT8781F_DEVID 0x8781
155#define IT8782F_DEVID 0x8782
156#define IT8783E_DEVID 0x8783
157#define IT8786E_DEVID 0x8786
158#define IT8790E_DEVID 0x8790
159#define IT8603E_DEVID 0x8603
160#define IT8620E_DEVID 0x8620
161#define IT8622E_DEVID 0x8622
162#define IT8623E_DEVID 0x8623
163#define IT8628E_DEVID 0x8628
164#define IT87952E_DEVID 0x8695
165
166/* Logical device 4 (Environmental Monitor) registers */
167#define IT87_ACT_REG 0x30
168#define IT87_BASE_REG 0x60
169#define IT87_SPECIAL_CFG_REG 0xf3 /* special configuration register */
170
171/* Logical device 7 registers (IT8712F and later) */
172#define IT87_SIO_GPIO1_REG 0x25
173#define IT87_SIO_GPIO2_REG 0x26
174#define IT87_SIO_GPIO3_REG 0x27
175#define IT87_SIO_GPIO4_REG 0x28
176#define IT87_SIO_GPIO5_REG 0x29
177#define IT87_SIO_PINX1_REG 0x2a /* Pin selection */
178#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
179#define IT87_SIO_SPI_REG 0xef /* SPI function pin select */
180#define IT87_SIO_VID_REG 0xfc /* VID value */
181#define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
182
183/* Force chip IDs to specified values. Should only be used for testing */
184static unsigned short force_id[2];
185static unsigned int force_id_cnt;
186
187/* ACPI resource conflicts are ignored if this parameter is set to 1 */
188static bool ignore_resource_conflict;
189
190/* Update battery voltage after every reading if true */
191static bool update_vbat;
192
193/* Not all BIOSes properly configure the PWM registers */
194static bool fix_pwm_polarity;
195
196/* Many IT87 constants specified below */
197
198/* Length of ISA address segment */
199#define IT87_EXTENT 8
200
201/* Length of ISA address segment for Environmental Controller */
202#define IT87_EC_EXTENT 2
203
204/* Offset of EC registers from ISA base address */
205#define IT87_EC_OFFSET 5
206
207/* Where are the ISA address/data registers relative to the EC base address */
208#define IT87_ADDR_REG_OFFSET 0
209#define IT87_DATA_REG_OFFSET 1
210
211/*----- The IT87 registers -----*/
212
213#define IT87_REG_CONFIG 0x00
214
215#define IT87_REG_ALARM1 0x01
216#define IT87_REG_ALARM2 0x02
217#define IT87_REG_ALARM3 0x03
218
219/*
220 * The IT8718F and IT8720F have the VID value in a different register, in
221 * Super-I/O configuration space.
222 */
223#define IT87_REG_VID 0x0a
224
225/* Interface Selection register on other chips */
226#define IT87_REG_IFSEL 0x0a
227
228/*
229 * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
230 * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
231 * mode.
232 */
233#define IT87_REG_FAN_DIV 0x0b
234#define IT87_REG_FAN_16BIT 0x0c
235
236/*
237 * Monitors:
238 * - up to 13 voltage (0 to 7, battery, avcc, 10 to 12)
239 * - up to 6 temp (1 to 6)
240 * - up to 6 fan (1 to 6)
241 */
242
243static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x4c };
244static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86, 0x4e };
245static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83, 0x4d };
246static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87, 0x4f };
247static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 };
248
249#define IT87_REG_FAN_MAIN_CTRL 0x13
250#define IT87_REG_FAN_CTL 0x14
251static const u8 IT87_REG_PWM[] = { 0x15, 0x16, 0x17, 0x7f, 0xa7, 0xaf };
252static const u8 IT87_REG_PWM_DUTY[] = { 0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab };
253
254static const u8 IT87_REG_VIN[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
255 0x27, 0x28, 0x2f, 0x2c, 0x2d, 0x2e };
256
257#define IT87_REG_TEMP(nr) (0x29 + (nr))
258
259#define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
260#define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
261#define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
262#define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
263
264#define IT87_REG_VIN_ENABLE 0x50
265#define IT87_REG_TEMP_ENABLE 0x51
266#define IT87_REG_TEMP_EXTRA 0x55
267#define IT87_REG_BEEP_ENABLE 0x5c
268
269#define IT87_REG_CHIPID 0x58
270
271static const u8 IT87_REG_AUTO_BASE[] = { 0x60, 0x68, 0x70, 0x78, 0xa0, 0xa8 };
272
273#define IT87_REG_AUTO_TEMP(nr, i) (IT87_REG_AUTO_BASE[nr] + (i))
274#define IT87_REG_AUTO_PWM(nr, i) (IT87_REG_AUTO_BASE[nr] + 5 + (i))
275
276#define IT87_REG_TEMP456_ENABLE 0x77
277
278#define NUM_VIN ARRAY_SIZE(IT87_REG_VIN)
279#define NUM_VIN_LIMIT 8
280#define NUM_TEMP 6
281#define NUM_TEMP_OFFSET ARRAY_SIZE(IT87_REG_TEMP_OFFSET)
282#define NUM_TEMP_LIMIT 3
283#define NUM_FAN ARRAY_SIZE(IT87_REG_FAN)
284#define NUM_FAN_DIV 3
285#define NUM_PWM ARRAY_SIZE(IT87_REG_PWM)
286#define NUM_AUTO_PWM ARRAY_SIZE(IT87_REG_PWM)
287
288struct it87_devices {
289 const char *name;
290 const char * const model;
291 u32 features;
292 u8 peci_mask;
293 u8 old_peci_mask;
294 u8 smbus_bitmap; /* SMBus enable bits in extra config register */
295 u8 ec_special_config;
296};
297
298#define FEAT_12MV_ADC BIT(0)
299#define FEAT_NEWER_AUTOPWM BIT(1)
300#define FEAT_OLD_AUTOPWM BIT(2)
301#define FEAT_16BIT_FANS BIT(3)
302#define FEAT_TEMP_OFFSET BIT(4)
303#define FEAT_TEMP_PECI BIT(5)
304#define FEAT_TEMP_OLD_PECI BIT(6)
305#define FEAT_FAN16_CONFIG BIT(7) /* Need to enable 16-bit fans */
306#define FEAT_FIVE_FANS BIT(8) /* Supports five fans */
307#define FEAT_VID BIT(9) /* Set if chip supports VID */
308#define FEAT_IN7_INTERNAL BIT(10) /* Set if in7 is internal */
309#define FEAT_SIX_FANS BIT(11) /* Supports six fans */
310#define FEAT_10_9MV_ADC BIT(12)
311#define FEAT_AVCC3 BIT(13) /* Chip supports in9/AVCC3 */
312#define FEAT_FIVE_PWM BIT(14) /* Chip supports 5 pwm chn */
313#define FEAT_SIX_PWM BIT(15) /* Chip supports 6 pwm chn */
314#define FEAT_PWM_FREQ2 BIT(16) /* Separate pwm freq 2 */
315#define FEAT_SIX_TEMP BIT(17) /* Up to 6 temp sensors */
316#define FEAT_VIN3_5V BIT(18) /* VIN3 connected to +5V */
317/*
318 * Disabling configuration mode on some chips can result in system
319 * hang-ups and access failures to the Super-IO chip at the
320 * second SIO address. Never exit configuration mode on these
321 * chips to avoid the problem.
322 */
323#define FEAT_CONF_NOEXIT BIT(19) /* Chip should not exit conf mode */
324#define FEAT_FOUR_FANS BIT(20) /* Supports four fans */
325#define FEAT_FOUR_PWM BIT(21) /* Supports four fan controls */
326#define FEAT_FOUR_TEMP BIT(22)
327#define FEAT_FANCTL_ONOFF BIT(23) /* chip has FAN_CTL ON/OFF */
328
329static const struct it87_devices it87_devices[] = {
330 [it87] = {
331 .name = "it87",
332 .model = "IT87F",
333 .features = FEAT_OLD_AUTOPWM | FEAT_FANCTL_ONOFF,
334 /* may need to overwrite */
335 },
336 [it8712] = {
337 .name = "it8712",
338 .model = "IT8712F",
339 .features = FEAT_OLD_AUTOPWM | FEAT_VID | FEAT_FANCTL_ONOFF,
340 /* may need to overwrite */
341 },
342 [it8716] = {
343 .name = "it8716",
344 .model = "IT8716F",
345 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
346 | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_PWM_FREQ2
347 | FEAT_FANCTL_ONOFF,
348 },
349 [it8718] = {
350 .name = "it8718",
351 .model = "IT8718F",
352 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
353 | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
354 | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
355 .old_peci_mask = 0x4,
356 },
357 [it8720] = {
358 .name = "it8720",
359 .model = "IT8720F",
360 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
361 | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
362 | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
363 .old_peci_mask = 0x4,
364 },
365 [it8721] = {
366 .name = "it8721",
367 .model = "IT8721F",
368 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
369 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
370 | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_IN7_INTERNAL
371 | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
372 .peci_mask = 0x05,
373 .old_peci_mask = 0x02, /* Actually reports PCH */
374 },
375 [it8728] = {
376 .name = "it8728",
377 .model = "IT8728F",
378 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
379 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
380 | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2
381 | FEAT_FANCTL_ONOFF,
382 .peci_mask = 0x07,
383 },
384 [it8732] = {
385 .name = "it8732",
386 .model = "IT8732F",
387 .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
388 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
389 | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_FOUR_FANS
390 | FEAT_FOUR_PWM | FEAT_FANCTL_ONOFF,
391 .peci_mask = 0x07,
392 .old_peci_mask = 0x02, /* Actually reports PCH */
393 },
394 [it8771] = {
395 .name = "it8771",
396 .model = "IT8771E",
397 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
398 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
399 | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
400 /* PECI: guesswork */
401 /* 12mV ADC (OHM) */
402 /* 16 bit fans (OHM) */
403 /* three fans, always 16 bit (guesswork) */
404 .peci_mask = 0x07,
405 },
406 [it8772] = {
407 .name = "it8772",
408 .model = "IT8772E",
409 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
410 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
411 | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
412 /* PECI (coreboot) */
413 /* 12mV ADC (HWSensors4, OHM) */
414 /* 16 bit fans (HWSensors4, OHM) */
415 /* three fans, always 16 bit (datasheet) */
416 .peci_mask = 0x07,
417 },
418 [it8781] = {
419 .name = "it8781",
420 .model = "IT8781F",
421 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
422 | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2
423 | FEAT_FANCTL_ONOFF,
424 .old_peci_mask = 0x4,
425 },
426 [it8782] = {
427 .name = "it8782",
428 .model = "IT8782F",
429 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
430 | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2
431 | FEAT_FANCTL_ONOFF,
432 .old_peci_mask = 0x4,
433 },
434 [it8783] = {
435 .name = "it8783",
436 .model = "IT8783E/F",
437 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
438 | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2
439 | FEAT_FANCTL_ONOFF,
440 .old_peci_mask = 0x4,
441 },
442 [it8786] = {
443 .name = "it8786",
444 .model = "IT8786E",
445 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
446 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
447 | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
448 .peci_mask = 0x07,
449 },
450 [it8790] = {
451 .name = "it8790",
452 .model = "IT8790E",
453 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
454 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
455 | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF | FEAT_CONF_NOEXIT,
456 .peci_mask = 0x07,
457 },
458 [it8792] = {
459 .name = "it8792",
460 .model = "IT8792E/IT8795E",
461 .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
462 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
463 | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_FANCTL_ONOFF
464 | FEAT_CONF_NOEXIT,
465 .peci_mask = 0x07,
466 .old_peci_mask = 0x02, /* Actually reports PCH */
467 },
468 [it8603] = {
469 .name = "it8603",
470 .model = "IT8603E",
471 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
472 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
473 | FEAT_AVCC3 | FEAT_PWM_FREQ2,
474 .peci_mask = 0x07,
475 },
476 [it8620] = {
477 .name = "it8620",
478 .model = "IT8620E",
479 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
480 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
481 | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
482 | FEAT_SIX_TEMP | FEAT_VIN3_5V | FEAT_FANCTL_ONOFF,
483 .peci_mask = 0x07,
484 },
485 [it8622] = {
486 .name = "it8622",
487 .model = "IT8622E",
488 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
489 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
490 | FEAT_FIVE_PWM | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2
491 | FEAT_AVCC3 | FEAT_VIN3_5V | FEAT_FOUR_TEMP,
492 .peci_mask = 0x07,
493 .smbus_bitmap = BIT(1) | BIT(2),
494 },
495 [it8628] = {
496 .name = "it8628",
497 .model = "IT8628E",
498 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
499 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
500 | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
501 | FEAT_SIX_TEMP | FEAT_VIN3_5V | FEAT_FANCTL_ONOFF,
502 .peci_mask = 0x07,
503 },
504 [it87952] = {
505 .name = "it87952",
506 .model = "IT87952E",
507 .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
508 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
509 | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_FANCTL_ONOFF
510 | FEAT_CONF_NOEXIT,
511 .peci_mask = 0x07,
512 .old_peci_mask = 0x02, /* Actually reports PCH */
513 },
514};
515
516#define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS)
517#define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC)
518#define has_10_9mv_adc(data) ((data)->features & FEAT_10_9MV_ADC)
519#define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
520#define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM)
521#define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET)
522#define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
523 ((data)->peci_mask & BIT(nr)))
524#define has_temp_old_peci(data, nr) \
525 (((data)->features & FEAT_TEMP_OLD_PECI) && \
526 ((data)->old_peci_mask & BIT(nr)))
527#define has_fan16_config(data) ((data)->features & FEAT_FAN16_CONFIG)
528#define has_four_fans(data) ((data)->features & (FEAT_FOUR_FANS | \
529 FEAT_FIVE_FANS | \
530 FEAT_SIX_FANS))
531#define has_five_fans(data) ((data)->features & (FEAT_FIVE_FANS | \
532 FEAT_SIX_FANS))
533#define has_six_fans(data) ((data)->features & FEAT_SIX_FANS)
534#define has_vid(data) ((data)->features & FEAT_VID)
535#define has_in7_internal(data) ((data)->features & FEAT_IN7_INTERNAL)
536#define has_avcc3(data) ((data)->features & FEAT_AVCC3)
537#define has_four_pwm(data) ((data)->features & (FEAT_FOUR_PWM | \
538 FEAT_FIVE_PWM | \
539 FEAT_SIX_PWM))
540#define has_five_pwm(data) ((data)->features & (FEAT_FIVE_PWM | \
541 FEAT_SIX_PWM))
542#define has_six_pwm(data) ((data)->features & FEAT_SIX_PWM)
543#define has_pwm_freq2(data) ((data)->features & FEAT_PWM_FREQ2)
544#define has_four_temp(data) ((data)->features & FEAT_FOUR_TEMP)
545#define has_six_temp(data) ((data)->features & FEAT_SIX_TEMP)
546#define has_vin3_5v(data) ((data)->features & FEAT_VIN3_5V)
547#define has_conf_noexit(data) ((data)->features & FEAT_CONF_NOEXIT)
548#define has_scaling(data) ((data)->features & (FEAT_12MV_ADC | \
549 FEAT_10_9MV_ADC))
550#define has_fanctl_onoff(data) ((data)->features & FEAT_FANCTL_ONOFF)
551
552struct it87_sio_data {
553 int sioaddr;
554 enum chips type;
555 /* Values read from Super-I/O config space */
556 u8 revision;
557 u8 vid_value;
558 u8 beep_pin;
559 u8 internal; /* Internal sensors can be labeled */
560 bool need_in7_reroute;
561 /* Features skipped based on config or DMI */
562 u16 skip_in;
563 u8 skip_vid;
564 u8 skip_fan;
565 u8 skip_pwm;
566 u8 skip_temp;
567 u8 smbus_bitmap;
568 u8 ec_special_config;
569};
570
571/*
572 * For each registered chip, we need to keep some data in memory.
573 * The structure is dynamically allocated.
574 */
575struct it87_data {
576 const struct attribute_group *groups[7];
577 int sioaddr;
578 enum chips type;
579 u32 features;
580 u8 peci_mask;
581 u8 old_peci_mask;
582
583 u8 smbus_bitmap; /* !=0 if SMBus needs to be disabled */
584 u8 ec_special_config; /* EC special config register restore value */
585
586 unsigned short addr;
587 const char *name;
588 struct mutex update_lock;
589 bool valid; /* true if following fields are valid */
590 unsigned long last_updated; /* In jiffies */
591
592 u16 in_scaled; /* Internal voltage sensors are scaled */
593 u16 in_internal; /* Bitfield, internal sensors (for labels) */
594 u16 has_in; /* Bitfield, voltage sensors enabled */
595 u8 in[NUM_VIN][3]; /* [nr][0]=in, [1]=min, [2]=max */
596 bool need_in7_reroute;
597 u8 has_fan; /* Bitfield, fans enabled */
598 u16 fan[NUM_FAN][2]; /* Register values, [nr][0]=fan, [1]=min */
599 u8 has_temp; /* Bitfield, temp sensors enabled */
600 s8 temp[NUM_TEMP][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
601 u8 sensor; /* Register value (IT87_REG_TEMP_ENABLE) */
602 u8 extra; /* Register value (IT87_REG_TEMP_EXTRA) */
603 u8 fan_div[NUM_FAN_DIV];/* Register encoding, shifted right */
604 bool has_vid; /* True if VID supported */
605 u8 vid; /* Register encoding, combined */
606 u8 vrm;
607 u32 alarms; /* Register encoding, combined */
608 bool has_beep; /* true if beep supported */
609 u8 beeps; /* Register encoding */
610 u8 fan_main_ctrl; /* Register value */
611 u8 fan_ctl; /* Register value */
612
613 /*
614 * The following 3 arrays correspond to the same registers up to
615 * the IT8720F. The meaning of bits 6-0 depends on the value of bit
616 * 7, and we want to preserve settings on mode changes, so we have
617 * to track all values separately.
618 * Starting with the IT8721F, the manual PWM duty cycles are stored
619 * in separate registers (8-bit values), so the separate tracking
620 * is no longer needed, but it is still done to keep the driver
621 * simple.
622 */
623 u8 has_pwm; /* Bitfield, pwm control enabled */
624 u8 pwm_ctrl[NUM_PWM]; /* Register value */
625 u8 pwm_duty[NUM_PWM]; /* Manual PWM value set by user */
626 u8 pwm_temp_map[NUM_PWM];/* PWM to temp. chan. mapping (bits 1-0) */
627
628 /* Automatic fan speed control registers */
629 u8 auto_pwm[NUM_AUTO_PWM][4]; /* [nr][3] is hard-coded */
630 s8 auto_temp[NUM_AUTO_PWM][5]; /* [nr][0] is point1_temp_hyst */
631};
632
633/* Board specific settings from DMI matching */
634struct it87_dmi_data {
635 u8 skip_pwm; /* pwm channels to skip for this board */
636};
637
638/* Global for results from DMI matching, if needed */
639static struct it87_dmi_data *dmi_data;
640
641static int adc_lsb(const struct it87_data *data, int nr)
642{
643 int lsb;
644
645 if (has_12mv_adc(data))
646 lsb = 120;
647 else if (has_10_9mv_adc(data))
648 lsb = 109;
649 else
650 lsb = 160;
651 if (data->in_scaled & BIT(nr))
652 lsb <<= 1;
653 return lsb;
654}
655
656static u8 in_to_reg(const struct it87_data *data, int nr, long val)
657{
658 val = DIV_ROUND_CLOSEST(val * 10, adc_lsb(data, nr));
659 return clamp_val(val, 0, 255);
660}
661
662static int in_from_reg(const struct it87_data *data, int nr, int val)
663{
664 return DIV_ROUND_CLOSEST(val * adc_lsb(data, nr), 10);
665}
666
667static inline u8 FAN_TO_REG(long rpm, int div)
668{
669 if (rpm == 0)
670 return 255;
671 rpm = clamp_val(rpm, 1, 1000000);
672 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
673}
674
675static inline u16 FAN16_TO_REG(long rpm)
676{
677 if (rpm == 0)
678 return 0xffff;
679 return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
680}
681
682#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
683 1350000 / ((val) * (div)))
684/* The divider is fixed to 2 in 16-bit mode */
685#define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
686 1350000 / ((val) * 2))
687
688#define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
689 ((val) + 500) / 1000), -128, 127))
690#define TEMP_FROM_REG(val) ((val) * 1000)
691
692static u8 pwm_to_reg(const struct it87_data *data, long val)
693{
694 if (has_newer_autopwm(data))
695 return val;
696 else
697 return val >> 1;
698}
699
700static int pwm_from_reg(const struct it87_data *data, u8 reg)
701{
702 if (has_newer_autopwm(data))
703 return reg;
704 else
705 return (reg & 0x7f) << 1;
706}
707
708static int DIV_TO_REG(int val)
709{
710 int answer = 0;
711
712 while (answer < 7 && (val >>= 1))
713 answer++;
714 return answer;
715}
716
717#define DIV_FROM_REG(val) BIT(val)
718
719/*
720 * PWM base frequencies. The frequency has to be divided by either 128 or 256,
721 * depending on the chip type, to calculate the actual PWM frequency.
722 *
723 * Some of the chip datasheets suggest a base frequency of 51 kHz instead
724 * of 750 kHz for the slowest base frequency, resulting in a PWM frequency
725 * of 200 Hz. Sometimes both PWM frequency select registers are affected,
726 * sometimes just one. It is unknown if this is a datasheet error or real,
727 * so this is ignored for now.
728 */
729static const unsigned int pwm_freq[8] = {
730 48000000,
731 24000000,
732 12000000,
733 8000000,
734 6000000,
735 3000000,
736 1500000,
737 750000,
738};
739
740static int smbus_disable(struct it87_data *data)
741{
742 int err;
743
744 if (data->smbus_bitmap) {
745 err = superio_enter(data->sioaddr);
746 if (err)
747 return err;
748 superio_select(data->sioaddr, PME);
749 superio_outb(data->sioaddr, IT87_SPECIAL_CFG_REG,
750 data->ec_special_config & ~data->smbus_bitmap);
751 superio_exit(data->sioaddr, has_conf_noexit(data));
752 }
753 return 0;
754}
755
756static int smbus_enable(struct it87_data *data)
757{
758 int err;
759
760 if (data->smbus_bitmap) {
761 err = superio_enter(data->sioaddr);
762 if (err)
763 return err;
764
765 superio_select(data->sioaddr, PME);
766 superio_outb(data->sioaddr, IT87_SPECIAL_CFG_REG,
767 data->ec_special_config);
768 superio_exit(data->sioaddr, has_conf_noexit(data));
769 }
770 return 0;
771}
772
773/*
774 * Must be called with data->update_lock held, except during initialization.
775 * Must be called with SMBus accesses disabled.
776 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
777 * would slow down the IT87 access and should not be necessary.
778 */
779static int it87_read_value(struct it87_data *data, u8 reg)
780{
781 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
782 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
783}
784
785/*
786 * Must be called with data->update_lock held, except during initialization.
787 * Must be called with SMBus accesses disabled.
788 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
789 * would slow down the IT87 access and should not be necessary.
790 */
791static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
792{
793 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
794 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
795}
796
797static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
798{
799 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM[nr]);
800 if (has_newer_autopwm(data)) {
801 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
802 data->pwm_duty[nr] = it87_read_value(data,
803 IT87_REG_PWM_DUTY[nr]);
804 } else {
805 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
806 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
807 else /* Manual mode */
808 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
809 }
810
811 if (has_old_autopwm(data)) {
812 int i;
813
814 for (i = 0; i < 5 ; i++)
815 data->auto_temp[nr][i] = it87_read_value(data,
816 IT87_REG_AUTO_TEMP(nr, i));
817 for (i = 0; i < 3 ; i++)
818 data->auto_pwm[nr][i] = it87_read_value(data,
819 IT87_REG_AUTO_PWM(nr, i));
820 } else if (has_newer_autopwm(data)) {
821 int i;
822
823 /*
824 * 0: temperature hysteresis (base + 5)
825 * 1: fan off temperature (base + 0)
826 * 2: fan start temperature (base + 1)
827 * 3: fan max temperature (base + 2)
828 */
829 data->auto_temp[nr][0] =
830 it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 5));
831
832 for (i = 0; i < 3 ; i++)
833 data->auto_temp[nr][i + 1] =
834 it87_read_value(data,
835 IT87_REG_AUTO_TEMP(nr, i));
836 /*
837 * 0: start pwm value (base + 3)
838 * 1: pwm slope (base + 4, 1/8th pwm)
839 */
840 data->auto_pwm[nr][0] =
841 it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 3));
842 data->auto_pwm[nr][1] =
843 it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 4));
844 }
845}
846
847static int it87_lock(struct it87_data *data)
848{
849 int err;
850
851 mutex_lock(&data->update_lock);
852 err = smbus_disable(data);
853 if (err)
854 mutex_unlock(&data->update_lock);
855 return err;
856}
857
858static void it87_unlock(struct it87_data *data)
859{
860 smbus_enable(data);
861 mutex_unlock(&data->update_lock);
862}
863
864static struct it87_data *it87_update_device(struct device *dev)
865{
866 struct it87_data *data = dev_get_drvdata(dev);
867 struct it87_data *ret = data;
868 int err;
869 int i;
870
871 mutex_lock(&data->update_lock);
872
873 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) ||
874 !data->valid) {
875 err = smbus_disable(data);
876 if (err) {
877 ret = ERR_PTR(err);
878 goto unlock;
879 }
880 if (update_vbat) {
881 /*
882 * Cleared after each update, so reenable. Value
883 * returned by this read will be previous value
884 */
885 it87_write_value(data, IT87_REG_CONFIG,
886 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
887 }
888 for (i = 0; i < NUM_VIN; i++) {
889 if (!(data->has_in & BIT(i)))
890 continue;
891
892 data->in[i][0] =
893 it87_read_value(data, IT87_REG_VIN[i]);
894
895 /* VBAT and AVCC don't have limit registers */
896 if (i >= NUM_VIN_LIMIT)
897 continue;
898
899 data->in[i][1] =
900 it87_read_value(data, IT87_REG_VIN_MIN(i));
901 data->in[i][2] =
902 it87_read_value(data, IT87_REG_VIN_MAX(i));
903 }
904
905 for (i = 0; i < NUM_FAN; i++) {
906 /* Skip disabled fans */
907 if (!(data->has_fan & BIT(i)))
908 continue;
909
910 data->fan[i][1] =
911 it87_read_value(data, IT87_REG_FAN_MIN[i]);
912 data->fan[i][0] = it87_read_value(data,
913 IT87_REG_FAN[i]);
914 /* Add high byte if in 16-bit mode */
915 if (has_16bit_fans(data)) {
916 data->fan[i][0] |= it87_read_value(data,
917 IT87_REG_FANX[i]) << 8;
918 data->fan[i][1] |= it87_read_value(data,
919 IT87_REG_FANX_MIN[i]) << 8;
920 }
921 }
922 for (i = 0; i < NUM_TEMP; i++) {
923 if (!(data->has_temp & BIT(i)))
924 continue;
925 data->temp[i][0] =
926 it87_read_value(data, IT87_REG_TEMP(i));
927
928 if (has_temp_offset(data) && i < NUM_TEMP_OFFSET)
929 data->temp[i][3] =
930 it87_read_value(data,
931 IT87_REG_TEMP_OFFSET[i]);
932
933 if (i >= NUM_TEMP_LIMIT)
934 continue;
935
936 data->temp[i][1] =
937 it87_read_value(data, IT87_REG_TEMP_LOW(i));
938 data->temp[i][2] =
939 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
940 }
941
942 /* Newer chips don't have clock dividers */
943 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
944 i = it87_read_value(data, IT87_REG_FAN_DIV);
945 data->fan_div[0] = i & 0x07;
946 data->fan_div[1] = (i >> 3) & 0x07;
947 data->fan_div[2] = (i & 0x40) ? 3 : 1;
948 }
949
950 data->alarms =
951 it87_read_value(data, IT87_REG_ALARM1) |
952 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
953 (it87_read_value(data, IT87_REG_ALARM3) << 16);
954 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
955
956 data->fan_main_ctrl = it87_read_value(data,
957 IT87_REG_FAN_MAIN_CTRL);
958 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
959 for (i = 0; i < NUM_PWM; i++) {
960 if (!(data->has_pwm & BIT(i)))
961 continue;
962 it87_update_pwm_ctrl(data, i);
963 }
964
965 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
966 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
967 /*
968 * The IT8705F does not have VID capability.
969 * The IT8718F and later don't use IT87_REG_VID for the
970 * same purpose.
971 */
972 if (data->type == it8712 || data->type == it8716) {
973 data->vid = it87_read_value(data, IT87_REG_VID);
974 /*
975 * The older IT8712F revisions had only 5 VID pins,
976 * but we assume it is always safe to read 6 bits.
977 */
978 data->vid &= 0x3f;
979 }
980 data->last_updated = jiffies;
981 data->valid = true;
982 smbus_enable(data);
983 }
984unlock:
985 mutex_unlock(&data->update_lock);
986 return ret;
987}
988
989static ssize_t show_in(struct device *dev, struct device_attribute *attr,
990 char *buf)
991{
992 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
993 struct it87_data *data = it87_update_device(dev);
994 int index = sattr->index;
995 int nr = sattr->nr;
996
997 if (IS_ERR(data))
998 return PTR_ERR(data);
999
1000 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
1001}
1002
1003static ssize_t set_in(struct device *dev, struct device_attribute *attr,
1004 const char *buf, size_t count)
1005{
1006 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1007 struct it87_data *data = dev_get_drvdata(dev);
1008 int index = sattr->index;
1009 int nr = sattr->nr;
1010 unsigned long val;
1011 int err;
1012
1013 if (kstrtoul(buf, 10, &val) < 0)
1014 return -EINVAL;
1015
1016 err = it87_lock(data);
1017 if (err)
1018 return err;
1019
1020 data->in[nr][index] = in_to_reg(data, nr, val);
1021 it87_write_value(data,
1022 index == 1 ? IT87_REG_VIN_MIN(nr)
1023 : IT87_REG_VIN_MAX(nr),
1024 data->in[nr][index]);
1025 it87_unlock(data);
1026 return count;
1027}
1028
1029static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
1030static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
1031 0, 1);
1032static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
1033 0, 2);
1034
1035static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
1036static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
1037 1, 1);
1038static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
1039 1, 2);
1040
1041static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
1042static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
1043 2, 1);
1044static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
1045 2, 2);
1046
1047static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
1048static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
1049 3, 1);
1050static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
1051 3, 2);
1052
1053static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
1054static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
1055 4, 1);
1056static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
1057 4, 2);
1058
1059static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
1060static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
1061 5, 1);
1062static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
1063 5, 2);
1064
1065static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
1066static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
1067 6, 1);
1068static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
1069 6, 2);
1070
1071static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
1072static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
1073 7, 1);
1074static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
1075 7, 2);
1076
1077static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
1078static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0);
1079static SENSOR_DEVICE_ATTR_2(in10_input, S_IRUGO, show_in, NULL, 10, 0);
1080static SENSOR_DEVICE_ATTR_2(in11_input, S_IRUGO, show_in, NULL, 11, 0);
1081static SENSOR_DEVICE_ATTR_2(in12_input, S_IRUGO, show_in, NULL, 12, 0);
1082
1083/* Up to 6 temperatures */
1084static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
1085 char *buf)
1086{
1087 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1088 int nr = sattr->nr;
1089 int index = sattr->index;
1090 struct it87_data *data = it87_update_device(dev);
1091
1092 if (IS_ERR(data))
1093 return PTR_ERR(data);
1094
1095 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
1096}
1097
1098static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
1099 const char *buf, size_t count)
1100{
1101 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1102 int nr = sattr->nr;
1103 int index = sattr->index;
1104 struct it87_data *data = dev_get_drvdata(dev);
1105 long val;
1106 u8 reg, regval;
1107 int err;
1108
1109 if (kstrtol(buf, 10, &val) < 0)
1110 return -EINVAL;
1111
1112 err = it87_lock(data);
1113 if (err)
1114 return err;
1115
1116 switch (index) {
1117 default:
1118 case 1:
1119 reg = IT87_REG_TEMP_LOW(nr);
1120 break;
1121 case 2:
1122 reg = IT87_REG_TEMP_HIGH(nr);
1123 break;
1124 case 3:
1125 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1126 if (!(regval & 0x80)) {
1127 regval |= 0x80;
1128 it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
1129 }
1130 data->valid = false;
1131 reg = IT87_REG_TEMP_OFFSET[nr];
1132 break;
1133 }
1134
1135 data->temp[nr][index] = TEMP_TO_REG(val);
1136 it87_write_value(data, reg, data->temp[nr][index]);
1137 it87_unlock(data);
1138 return count;
1139}
1140
1141static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
1142static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1143 0, 1);
1144static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1145 0, 2);
1146static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
1147 set_temp, 0, 3);
1148static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
1149static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1150 1, 1);
1151static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1152 1, 2);
1153static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1154 set_temp, 1, 3);
1155static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
1156static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1157 2, 1);
1158static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1159 2, 2);
1160static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1161 set_temp, 2, 3);
1162static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 3, 0);
1163static SENSOR_DEVICE_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, 0);
1164static SENSOR_DEVICE_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, 0);
1165
1166static int get_temp_type(struct it87_data *data, int index)
1167{
1168 /*
1169 * 2 is deprecated;
1170 * 3 = thermal diode;
1171 * 4 = thermistor;
1172 * 5 = AMDTSI;
1173 * 6 = Intel PECI;
1174 * 0 = disabled
1175 */
1176 u8 reg, extra;
1177 int ttype, type = 0;
1178
1179 /* Detect PECI vs. AMDTSI */
1180 ttype = 6;
1181 if ((has_temp_peci(data, index)) || data->type == it8721 ||
1182 data->type == it8720) {
1183 extra = it87_read_value(data, IT87_REG_IFSEL);
1184 if ((extra & 0x70) == 0x40)
1185 ttype = 5;
1186 }
1187
1188 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
1189
1190 /* Per chip special detection */
1191 switch (data->type) {
1192 case it8622:
1193 if (!(reg & 0xc0) && index == 3)
1194 type = ttype;
1195 break;
1196 default:
1197 break;
1198 }
1199
1200 if (type || index >= 3)
1201 return type;
1202
1203 extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
1204
1205 if ((has_temp_peci(data, index) && (reg >> 6 == index + 1)) ||
1206 (has_temp_old_peci(data, index) && (extra & 0x80)))
1207 type = ttype; /* Intel PECI or AMDTSI */
1208 else if (reg & BIT(index))
1209 type = 3; /* thermal diode */
1210 else if (reg & BIT(index + 3))
1211 type = 4; /* thermistor */
1212
1213 return type;
1214}
1215
1216static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
1217 char *buf)
1218{
1219 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1220 struct it87_data *data = it87_update_device(dev);
1221
1222 if (IS_ERR(data))
1223 return PTR_ERR(data);
1224
1225 return sprintf(buf, "%d\n", get_temp_type(data, sensor_attr->index));
1226}
1227
1228static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
1229 const char *buf, size_t count)
1230{
1231 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1232 int nr = sensor_attr->index;
1233
1234 struct it87_data *data = dev_get_drvdata(dev);
1235 long val;
1236 u8 reg, extra;
1237 int err;
1238
1239 if (kstrtol(buf, 10, &val) < 0)
1240 return -EINVAL;
1241
1242 err = it87_lock(data);
1243 if (err)
1244 return err;
1245
1246 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
1247 reg &= ~(1 << nr);
1248 reg &= ~(8 << nr);
1249 if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
1250 reg &= 0x3f;
1251 extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
1252 if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
1253 extra &= 0x7f;
1254 if (val == 2) { /* backwards compatibility */
1255 dev_warn(dev,
1256 "Sensor type 2 is deprecated, please use 4 instead\n");
1257 val = 4;
1258 }
1259 /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
1260 if (val == 3)
1261 reg |= 1 << nr;
1262 else if (val == 4)
1263 reg |= 8 << nr;
1264 else if (has_temp_peci(data, nr) && val == 6)
1265 reg |= (nr + 1) << 6;
1266 else if (has_temp_old_peci(data, nr) && val == 6)
1267 extra |= 0x80;
1268 else if (val != 0) {
1269 count = -EINVAL;
1270 goto unlock;
1271 }
1272
1273 data->sensor = reg;
1274 data->extra = extra;
1275 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
1276 if (has_temp_old_peci(data, nr))
1277 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1278 data->valid = false; /* Force cache refresh */
1279unlock:
1280 it87_unlock(data);
1281 return count;
1282}
1283
1284static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
1285 set_temp_type, 0);
1286static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
1287 set_temp_type, 1);
1288static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
1289 set_temp_type, 2);
1290
1291/* 6 Fans */
1292
1293static int pwm_mode(const struct it87_data *data, int nr)
1294{
1295 if (has_fanctl_onoff(data) && nr < 3 &&
1296 !(data->fan_main_ctrl & BIT(nr)))
1297 return 0; /* Full speed */
1298 if (data->pwm_ctrl[nr] & 0x80)
1299 return 2; /* Automatic mode */
1300 if ((!has_fanctl_onoff(data) || nr >= 3) &&
1301 data->pwm_duty[nr] == pwm_to_reg(data, 0xff))
1302 return 0; /* Full speed */
1303
1304 return 1; /* Manual mode */
1305}
1306
1307static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1308 char *buf)
1309{
1310 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1311 int nr = sattr->nr;
1312 int index = sattr->index;
1313 int speed;
1314 struct it87_data *data = it87_update_device(dev);
1315
1316 if (IS_ERR(data))
1317 return PTR_ERR(data);
1318
1319 speed = has_16bit_fans(data) ?
1320 FAN16_FROM_REG(data->fan[nr][index]) :
1321 FAN_FROM_REG(data->fan[nr][index],
1322 DIV_FROM_REG(data->fan_div[nr]));
1323 return sprintf(buf, "%d\n", speed);
1324}
1325
1326static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
1327 char *buf)
1328{
1329 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1330 struct it87_data *data = it87_update_device(dev);
1331 int nr = sensor_attr->index;
1332
1333 if (IS_ERR(data))
1334 return PTR_ERR(data);
1335
1336 return sprintf(buf, "%lu\n", DIV_FROM_REG(data->fan_div[nr]));
1337}
1338
1339static ssize_t show_pwm_enable(struct device *dev,
1340 struct device_attribute *attr, char *buf)
1341{
1342 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1343 struct it87_data *data = it87_update_device(dev);
1344 int nr = sensor_attr->index;
1345
1346 if (IS_ERR(data))
1347 return PTR_ERR(data);
1348
1349 return sprintf(buf, "%d\n", pwm_mode(data, nr));
1350}
1351
1352static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1353 char *buf)
1354{
1355 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1356 struct it87_data *data = it87_update_device(dev);
1357 int nr = sensor_attr->index;
1358
1359 if (IS_ERR(data))
1360 return PTR_ERR(data);
1361
1362 return sprintf(buf, "%d\n",
1363 pwm_from_reg(data, data->pwm_duty[nr]));
1364}
1365
1366static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
1367 char *buf)
1368{
1369 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1370 struct it87_data *data = it87_update_device(dev);
1371 int nr = sensor_attr->index;
1372 unsigned int freq;
1373 int index;
1374
1375 if (IS_ERR(data))
1376 return PTR_ERR(data);
1377
1378 if (has_pwm_freq2(data) && nr == 1)
1379 index = (data->extra >> 4) & 0x07;
1380 else
1381 index = (data->fan_ctl >> 4) & 0x07;
1382
1383 freq = pwm_freq[index] / (has_newer_autopwm(data) ? 256 : 128);
1384
1385 return sprintf(buf, "%u\n", freq);
1386}
1387
1388static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1389 const char *buf, size_t count)
1390{
1391 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1392 int nr = sattr->nr;
1393 int index = sattr->index;
1394
1395 struct it87_data *data = dev_get_drvdata(dev);
1396 long val;
1397 int err;
1398 u8 reg;
1399
1400 if (kstrtol(buf, 10, &val) < 0)
1401 return -EINVAL;
1402
1403 err = it87_lock(data);
1404 if (err)
1405 return err;
1406
1407 if (has_16bit_fans(data)) {
1408 data->fan[nr][index] = FAN16_TO_REG(val);
1409 it87_write_value(data, IT87_REG_FAN_MIN[nr],
1410 data->fan[nr][index] & 0xff);
1411 it87_write_value(data, IT87_REG_FANX_MIN[nr],
1412 data->fan[nr][index] >> 8);
1413 } else {
1414 reg = it87_read_value(data, IT87_REG_FAN_DIV);
1415 switch (nr) {
1416 case 0:
1417 data->fan_div[nr] = reg & 0x07;
1418 break;
1419 case 1:
1420 data->fan_div[nr] = (reg >> 3) & 0x07;
1421 break;
1422 case 2:
1423 data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
1424 break;
1425 }
1426 data->fan[nr][index] =
1427 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
1428 it87_write_value(data, IT87_REG_FAN_MIN[nr],
1429 data->fan[nr][index]);
1430 }
1431
1432 it87_unlock(data);
1433 return count;
1434}
1435
1436static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
1437 const char *buf, size_t count)
1438{
1439 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1440 struct it87_data *data = dev_get_drvdata(dev);
1441 int nr = sensor_attr->index;
1442 unsigned long val;
1443 int min, err;
1444 u8 old;
1445
1446 if (kstrtoul(buf, 10, &val) < 0)
1447 return -EINVAL;
1448
1449 err = it87_lock(data);
1450 if (err)
1451 return err;
1452
1453 old = it87_read_value(data, IT87_REG_FAN_DIV);
1454
1455 /* Save fan min limit */
1456 min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
1457
1458 switch (nr) {
1459 case 0:
1460 case 1:
1461 data->fan_div[nr] = DIV_TO_REG(val);
1462 break;
1463 case 2:
1464 if (val < 8)
1465 data->fan_div[nr] = 1;
1466 else
1467 data->fan_div[nr] = 3;
1468 }
1469 val = old & 0x80;
1470 val |= (data->fan_div[0] & 0x07);
1471 val |= (data->fan_div[1] & 0x07) << 3;
1472 if (data->fan_div[2] == 3)
1473 val |= 0x1 << 6;
1474 it87_write_value(data, IT87_REG_FAN_DIV, val);
1475
1476 /* Restore fan min limit */
1477 data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
1478 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
1479
1480 it87_unlock(data);
1481 return count;
1482}
1483
1484/* Returns 0 if OK, -EINVAL otherwise */
1485static int check_trip_points(struct device *dev, int nr)
1486{
1487 const struct it87_data *data = dev_get_drvdata(dev);
1488 int i, err = 0;
1489
1490 if (has_old_autopwm(data)) {
1491 for (i = 0; i < 3; i++) {
1492 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1493 err = -EINVAL;
1494 }
1495 for (i = 0; i < 2; i++) {
1496 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
1497 err = -EINVAL;
1498 }
1499 } else if (has_newer_autopwm(data)) {
1500 for (i = 1; i < 3; i++) {
1501 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1502 err = -EINVAL;
1503 }
1504 }
1505
1506 if (err) {
1507 dev_err(dev,
1508 "Inconsistent trip points, not switching to automatic mode\n");
1509 dev_err(dev, "Adjust the trip points and try again\n");
1510 }
1511 return err;
1512}
1513
1514static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
1515 const char *buf, size_t count)
1516{
1517 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1518 struct it87_data *data = dev_get_drvdata(dev);
1519 int nr = sensor_attr->index;
1520 long val;
1521 int err;
1522
1523 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
1524 return -EINVAL;
1525
1526 /* Check trip points before switching to automatic mode */
1527 if (val == 2) {
1528 if (check_trip_points(dev, nr) < 0)
1529 return -EINVAL;
1530 }
1531
1532 err = it87_lock(data);
1533 if (err)
1534 return err;
1535
1536 if (val == 0) {
1537 if (nr < 3 && has_fanctl_onoff(data)) {
1538 int tmp;
1539 /* make sure the fan is on when in on/off mode */
1540 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
1541 it87_write_value(data, IT87_REG_FAN_CTL, tmp | BIT(nr));
1542 /* set on/off mode */
1543 data->fan_main_ctrl &= ~BIT(nr);
1544 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1545 data->fan_main_ctrl);
1546 } else {
1547 u8 ctrl;
1548
1549 /* No on/off mode, set maximum pwm value */
1550 data->pwm_duty[nr] = pwm_to_reg(data, 0xff);
1551 it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1552 data->pwm_duty[nr]);
1553 /* and set manual mode */
1554 if (has_newer_autopwm(data)) {
1555 ctrl = (data->pwm_ctrl[nr] & 0x7c) |
1556 data->pwm_temp_map[nr];
1557 } else {
1558 ctrl = data->pwm_duty[nr];
1559 }
1560 data->pwm_ctrl[nr] = ctrl;
1561 it87_write_value(data, IT87_REG_PWM[nr], ctrl);
1562 }
1563 } else {
1564 u8 ctrl;
1565
1566 if (has_newer_autopwm(data)) {
1567 ctrl = (data->pwm_ctrl[nr] & 0x7c) |
1568 data->pwm_temp_map[nr];
1569 if (val != 1)
1570 ctrl |= 0x80;
1571 } else {
1572 ctrl = (val == 1 ? data->pwm_duty[nr] : 0x80);
1573 }
1574 data->pwm_ctrl[nr] = ctrl;
1575 it87_write_value(data, IT87_REG_PWM[nr], ctrl);
1576
1577 if (has_fanctl_onoff(data) && nr < 3) {
1578 /* set SmartGuardian mode */
1579 data->fan_main_ctrl |= BIT(nr);
1580 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1581 data->fan_main_ctrl);
1582 }
1583 }
1584
1585 it87_unlock(data);
1586 return count;
1587}
1588
1589static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1590 const char *buf, size_t count)
1591{
1592 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1593 struct it87_data *data = dev_get_drvdata(dev);
1594 int nr = sensor_attr->index;
1595 long val;
1596 int err;
1597
1598 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1599 return -EINVAL;
1600
1601 err = it87_lock(data);
1602 if (err)
1603 return err;
1604
1605 it87_update_pwm_ctrl(data, nr);
1606 if (has_newer_autopwm(data)) {
1607 /*
1608 * If we are in automatic mode, the PWM duty cycle register
1609 * is read-only so we can't write the value.
1610 */
1611 if (data->pwm_ctrl[nr] & 0x80) {
1612 count = -EBUSY;
1613 goto unlock;
1614 }
1615 data->pwm_duty[nr] = pwm_to_reg(data, val);
1616 it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1617 data->pwm_duty[nr]);
1618 } else {
1619 data->pwm_duty[nr] = pwm_to_reg(data, val);
1620 /*
1621 * If we are in manual mode, write the duty cycle immediately;
1622 * otherwise, just store it for later use.
1623 */
1624 if (!(data->pwm_ctrl[nr] & 0x80)) {
1625 data->pwm_ctrl[nr] = data->pwm_duty[nr];
1626 it87_write_value(data, IT87_REG_PWM[nr],
1627 data->pwm_ctrl[nr]);
1628 }
1629 }
1630unlock:
1631 it87_unlock(data);
1632 return count;
1633}
1634
1635static ssize_t set_pwm_freq(struct device *dev, struct device_attribute *attr,
1636 const char *buf, size_t count)
1637{
1638 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1639 struct it87_data *data = dev_get_drvdata(dev);
1640 int nr = sensor_attr->index;
1641 unsigned long val;
1642 int err;
1643 int i;
1644
1645 if (kstrtoul(buf, 10, &val) < 0)
1646 return -EINVAL;
1647
1648 val = clamp_val(val, 0, 1000000);
1649 val *= has_newer_autopwm(data) ? 256 : 128;
1650
1651 /* Search for the nearest available frequency */
1652 for (i = 0; i < 7; i++) {
1653 if (val > (pwm_freq[i] + pwm_freq[i + 1]) / 2)
1654 break;
1655 }
1656
1657 err = it87_lock(data);
1658 if (err)
1659 return err;
1660
1661 if (nr == 0) {
1662 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1663 data->fan_ctl |= i << 4;
1664 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1665 } else {
1666 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x8f;
1667 data->extra |= i << 4;
1668 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1669 }
1670 it87_unlock(data);
1671
1672 return count;
1673}
1674
1675static ssize_t show_pwm_temp_map(struct device *dev,
1676 struct device_attribute *attr, char *buf)
1677{
1678 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1679 struct it87_data *data = it87_update_device(dev);
1680 int nr = sensor_attr->index;
1681 int map;
1682
1683 if (IS_ERR(data))
1684 return PTR_ERR(data);
1685
1686 map = data->pwm_temp_map[nr];
1687 if (map >= 3)
1688 map = 0; /* Should never happen */
1689 if (nr >= 3) /* pwm channels 3..6 map to temp4..6 */
1690 map += 3;
1691
1692 return sprintf(buf, "%d\n", (int)BIT(map));
1693}
1694
1695static ssize_t set_pwm_temp_map(struct device *dev,
1696 struct device_attribute *attr, const char *buf,
1697 size_t count)
1698{
1699 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1700 struct it87_data *data = dev_get_drvdata(dev);
1701 int nr = sensor_attr->index;
1702 long val;
1703 int err;
1704 u8 reg;
1705
1706 if (kstrtol(buf, 10, &val) < 0)
1707 return -EINVAL;
1708
1709 if (nr >= 3)
1710 val -= 3;
1711
1712 switch (val) {
1713 case BIT(0):
1714 reg = 0x00;
1715 break;
1716 case BIT(1):
1717 reg = 0x01;
1718 break;
1719 case BIT(2):
1720 reg = 0x02;
1721 break;
1722 default:
1723 return -EINVAL;
1724 }
1725
1726 err = it87_lock(data);
1727 if (err)
1728 return err;
1729
1730 it87_update_pwm_ctrl(data, nr);
1731 data->pwm_temp_map[nr] = reg;
1732 /*
1733 * If we are in automatic mode, write the temp mapping immediately;
1734 * otherwise, just store it for later use.
1735 */
1736 if (data->pwm_ctrl[nr] & 0x80) {
1737 data->pwm_ctrl[nr] = (data->pwm_ctrl[nr] & 0xfc) |
1738 data->pwm_temp_map[nr];
1739 it87_write_value(data, IT87_REG_PWM[nr], data->pwm_ctrl[nr]);
1740 }
1741 it87_unlock(data);
1742 return count;
1743}
1744
1745static ssize_t show_auto_pwm(struct device *dev, struct device_attribute *attr,
1746 char *buf)
1747{
1748 struct it87_data *data = it87_update_device(dev);
1749 struct sensor_device_attribute_2 *sensor_attr =
1750 to_sensor_dev_attr_2(attr);
1751 int nr = sensor_attr->nr;
1752 int point = sensor_attr->index;
1753
1754 if (IS_ERR(data))
1755 return PTR_ERR(data);
1756
1757 return sprintf(buf, "%d\n",
1758 pwm_from_reg(data, data->auto_pwm[nr][point]));
1759}
1760
1761static ssize_t set_auto_pwm(struct device *dev, struct device_attribute *attr,
1762 const char *buf, size_t count)
1763{
1764 struct it87_data *data = dev_get_drvdata(dev);
1765 struct sensor_device_attribute_2 *sensor_attr =
1766 to_sensor_dev_attr_2(attr);
1767 int nr = sensor_attr->nr;
1768 int point = sensor_attr->index;
1769 int regaddr;
1770 long val;
1771 int err;
1772
1773 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1774 return -EINVAL;
1775
1776 err = it87_lock(data);
1777 if (err)
1778 return err;
1779
1780 data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1781 if (has_newer_autopwm(data))
1782 regaddr = IT87_REG_AUTO_TEMP(nr, 3);
1783 else
1784 regaddr = IT87_REG_AUTO_PWM(nr, point);
1785 it87_write_value(data, regaddr, data->auto_pwm[nr][point]);
1786 it87_unlock(data);
1787 return count;
1788}
1789
1790static ssize_t show_auto_pwm_slope(struct device *dev,
1791 struct device_attribute *attr, char *buf)
1792{
1793 struct it87_data *data = it87_update_device(dev);
1794 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1795 int nr = sensor_attr->index;
1796
1797 if (IS_ERR(data))
1798 return PTR_ERR(data);
1799
1800 return sprintf(buf, "%d\n", data->auto_pwm[nr][1] & 0x7f);
1801}
1802
1803static ssize_t set_auto_pwm_slope(struct device *dev,
1804 struct device_attribute *attr,
1805 const char *buf, size_t count)
1806{
1807 struct it87_data *data = dev_get_drvdata(dev);
1808 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1809 int nr = sensor_attr->index;
1810 unsigned long val;
1811 int err;
1812
1813 if (kstrtoul(buf, 10, &val) < 0 || val > 127)
1814 return -EINVAL;
1815
1816 err = it87_lock(data);
1817 if (err)
1818 return err;
1819
1820 data->auto_pwm[nr][1] = (data->auto_pwm[nr][1] & 0x80) | val;
1821 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 4),
1822 data->auto_pwm[nr][1]);
1823 it87_unlock(data);
1824 return count;
1825}
1826
1827static ssize_t show_auto_temp(struct device *dev, struct device_attribute *attr,
1828 char *buf)
1829{
1830 struct it87_data *data = it87_update_device(dev);
1831 struct sensor_device_attribute_2 *sensor_attr =
1832 to_sensor_dev_attr_2(attr);
1833 int nr = sensor_attr->nr;
1834 int point = sensor_attr->index;
1835 int reg;
1836
1837 if (IS_ERR(data))
1838 return PTR_ERR(data);
1839
1840 if (has_old_autopwm(data) || point)
1841 reg = data->auto_temp[nr][point];
1842 else
1843 reg = data->auto_temp[nr][1] - (data->auto_temp[nr][0] & 0x1f);
1844
1845 return sprintf(buf, "%d\n", TEMP_FROM_REG(reg));
1846}
1847
1848static ssize_t set_auto_temp(struct device *dev, struct device_attribute *attr,
1849 const char *buf, size_t count)
1850{
1851 struct it87_data *data = dev_get_drvdata(dev);
1852 struct sensor_device_attribute_2 *sensor_attr =
1853 to_sensor_dev_attr_2(attr);
1854 int nr = sensor_attr->nr;
1855 int point = sensor_attr->index;
1856 long val;
1857 int reg;
1858 int err;
1859
1860 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1861 return -EINVAL;
1862
1863 err = it87_lock(data);
1864 if (err)
1865 return err;
1866
1867 if (has_newer_autopwm(data) && !point) {
1868 reg = data->auto_temp[nr][1] - TEMP_TO_REG(val);
1869 reg = clamp_val(reg, 0, 0x1f) | (data->auto_temp[nr][0] & 0xe0);
1870 data->auto_temp[nr][0] = reg;
1871 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 5), reg);
1872 } else {
1873 reg = TEMP_TO_REG(val);
1874 data->auto_temp[nr][point] = reg;
1875 if (has_newer_autopwm(data))
1876 point--;
1877 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), reg);
1878 }
1879 it87_unlock(data);
1880 return count;
1881}
1882
1883static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1884static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1885 0, 1);
1886static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1887 set_fan_div, 0);
1888
1889static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1890static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1891 1, 1);
1892static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1893 set_fan_div, 1);
1894
1895static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1896static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1897 2, 1);
1898static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1899 set_fan_div, 2);
1900
1901static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1902static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1903 3, 1);
1904
1905static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1906static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1907 4, 1);
1908
1909static SENSOR_DEVICE_ATTR_2(fan6_input, S_IRUGO, show_fan, NULL, 5, 0);
1910static SENSOR_DEVICE_ATTR_2(fan6_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1911 5, 1);
1912
1913static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1914 show_pwm_enable, set_pwm_enable, 0);
1915static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1916static SENSOR_DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq,
1917 set_pwm_freq, 0);
1918static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO,
1919 show_pwm_temp_map, set_pwm_temp_map, 0);
1920static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1921 show_auto_pwm, set_auto_pwm, 0, 0);
1922static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1923 show_auto_pwm, set_auto_pwm, 0, 1);
1924static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1925 show_auto_pwm, set_auto_pwm, 0, 2);
1926static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1927 show_auto_pwm, NULL, 0, 3);
1928static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1929 show_auto_temp, set_auto_temp, 0, 1);
1930static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1931 show_auto_temp, set_auto_temp, 0, 0);
1932static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1933 show_auto_temp, set_auto_temp, 0, 2);
1934static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1935 show_auto_temp, set_auto_temp, 0, 3);
1936static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1937 show_auto_temp, set_auto_temp, 0, 4);
1938static SENSOR_DEVICE_ATTR_2(pwm1_auto_start, S_IRUGO | S_IWUSR,
1939 show_auto_pwm, set_auto_pwm, 0, 0);
1940static SENSOR_DEVICE_ATTR(pwm1_auto_slope, S_IRUGO | S_IWUSR,
1941 show_auto_pwm_slope, set_auto_pwm_slope, 0);
1942
1943static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1944 show_pwm_enable, set_pwm_enable, 1);
1945static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1946static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, set_pwm_freq, 1);
1947static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO,
1948 show_pwm_temp_map, set_pwm_temp_map, 1);
1949static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1950 show_auto_pwm, set_auto_pwm, 1, 0);
1951static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1952 show_auto_pwm, set_auto_pwm, 1, 1);
1953static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1954 show_auto_pwm, set_auto_pwm, 1, 2);
1955static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1956 show_auto_pwm, NULL, 1, 3);
1957static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1958 show_auto_temp, set_auto_temp, 1, 1);
1959static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1960 show_auto_temp, set_auto_temp, 1, 0);
1961static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1962 show_auto_temp, set_auto_temp, 1, 2);
1963static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1964 show_auto_temp, set_auto_temp, 1, 3);
1965static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1966 show_auto_temp, set_auto_temp, 1, 4);
1967static SENSOR_DEVICE_ATTR_2(pwm2_auto_start, S_IRUGO | S_IWUSR,
1968 show_auto_pwm, set_auto_pwm, 1, 0);
1969static SENSOR_DEVICE_ATTR(pwm2_auto_slope, S_IRUGO | S_IWUSR,
1970 show_auto_pwm_slope, set_auto_pwm_slope, 1);
1971
1972static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1973 show_pwm_enable, set_pwm_enable, 2);
1974static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1975static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL, 2);
1976static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO,
1977 show_pwm_temp_map, set_pwm_temp_map, 2);
1978static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1979 show_auto_pwm, set_auto_pwm, 2, 0);
1980static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1981 show_auto_pwm, set_auto_pwm, 2, 1);
1982static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1983 show_auto_pwm, set_auto_pwm, 2, 2);
1984static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1985 show_auto_pwm, NULL, 2, 3);
1986static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1987 show_auto_temp, set_auto_temp, 2, 1);
1988static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1989 show_auto_temp, set_auto_temp, 2, 0);
1990static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1991 show_auto_temp, set_auto_temp, 2, 2);
1992static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1993 show_auto_temp, set_auto_temp, 2, 3);
1994static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1995 show_auto_temp, set_auto_temp, 2, 4);
1996static SENSOR_DEVICE_ATTR_2(pwm3_auto_start, S_IRUGO | S_IWUSR,
1997 show_auto_pwm, set_auto_pwm, 2, 0);
1998static SENSOR_DEVICE_ATTR(pwm3_auto_slope, S_IRUGO | S_IWUSR,
1999 show_auto_pwm_slope, set_auto_pwm_slope, 2);
2000
2001static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
2002 show_pwm_enable, set_pwm_enable, 3);
2003static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 3);
2004static SENSOR_DEVICE_ATTR(pwm4_freq, S_IRUGO, show_pwm_freq, NULL, 3);
2005static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO,
2006 show_pwm_temp_map, set_pwm_temp_map, 3);
2007static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp, S_IRUGO | S_IWUSR,
2008 show_auto_temp, set_auto_temp, 2, 1);
2009static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
2010 show_auto_temp, set_auto_temp, 2, 0);
2011static SENSOR_DEVICE_ATTR_2(pwm4_auto_point2_temp, S_IRUGO | S_IWUSR,
2012 show_auto_temp, set_auto_temp, 2, 2);
2013static SENSOR_DEVICE_ATTR_2(pwm4_auto_point3_temp, S_IRUGO | S_IWUSR,
2014 show_auto_temp, set_auto_temp, 2, 3);
2015static SENSOR_DEVICE_ATTR_2(pwm4_auto_start, S_IRUGO | S_IWUSR,
2016 show_auto_pwm, set_auto_pwm, 3, 0);
2017static SENSOR_DEVICE_ATTR(pwm4_auto_slope, S_IRUGO | S_IWUSR,
2018 show_auto_pwm_slope, set_auto_pwm_slope, 3);
2019
2020static SENSOR_DEVICE_ATTR(pwm5_enable, S_IRUGO | S_IWUSR,
2021 show_pwm_enable, set_pwm_enable, 4);
2022static SENSOR_DEVICE_ATTR(pwm5, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 4);
2023static SENSOR_DEVICE_ATTR(pwm5_freq, S_IRUGO, show_pwm_freq, NULL, 4);
2024static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO,
2025 show_pwm_temp_map, set_pwm_temp_map, 4);
2026static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp, S_IRUGO | S_IWUSR,
2027 show_auto_temp, set_auto_temp, 2, 1);
2028static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
2029 show_auto_temp, set_auto_temp, 2, 0);
2030static SENSOR_DEVICE_ATTR_2(pwm5_auto_point2_temp, S_IRUGO | S_IWUSR,
2031 show_auto_temp, set_auto_temp, 2, 2);
2032static SENSOR_DEVICE_ATTR_2(pwm5_auto_point3_temp, S_IRUGO | S_IWUSR,
2033 show_auto_temp, set_auto_temp, 2, 3);
2034static SENSOR_DEVICE_ATTR_2(pwm5_auto_start, S_IRUGO | S_IWUSR,
2035 show_auto_pwm, set_auto_pwm, 4, 0);
2036static SENSOR_DEVICE_ATTR(pwm5_auto_slope, S_IRUGO | S_IWUSR,
2037 show_auto_pwm_slope, set_auto_pwm_slope, 4);
2038
2039static SENSOR_DEVICE_ATTR(pwm6_enable, S_IRUGO | S_IWUSR,
2040 show_pwm_enable, set_pwm_enable, 5);
2041static SENSOR_DEVICE_ATTR(pwm6, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 5);
2042static SENSOR_DEVICE_ATTR(pwm6_freq, S_IRUGO, show_pwm_freq, NULL, 5);
2043static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO,
2044 show_pwm_temp_map, set_pwm_temp_map, 5);
2045static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp, S_IRUGO | S_IWUSR,
2046 show_auto_temp, set_auto_temp, 2, 1);
2047static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
2048 show_auto_temp, set_auto_temp, 2, 0);
2049static SENSOR_DEVICE_ATTR_2(pwm6_auto_point2_temp, S_IRUGO | S_IWUSR,
2050 show_auto_temp, set_auto_temp, 2, 2);
2051static SENSOR_DEVICE_ATTR_2(pwm6_auto_point3_temp, S_IRUGO | S_IWUSR,
2052 show_auto_temp, set_auto_temp, 2, 3);
2053static SENSOR_DEVICE_ATTR_2(pwm6_auto_start, S_IRUGO | S_IWUSR,
2054 show_auto_pwm, set_auto_pwm, 5, 0);
2055static SENSOR_DEVICE_ATTR(pwm6_auto_slope, S_IRUGO | S_IWUSR,
2056 show_auto_pwm_slope, set_auto_pwm_slope, 5);
2057
2058/* Alarms */
2059static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
2060 char *buf)
2061{
2062 struct it87_data *data = it87_update_device(dev);
2063
2064 if (IS_ERR(data))
2065 return PTR_ERR(data);
2066
2067 return sprintf(buf, "%u\n", data->alarms);
2068}
2069static DEVICE_ATTR_RO(alarms);
2070
2071static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
2072 char *buf)
2073{
2074 struct it87_data *data = it87_update_device(dev);
2075 int bitnr = to_sensor_dev_attr(attr)->index;
2076
2077 if (IS_ERR(data))
2078 return PTR_ERR(data);
2079
2080 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
2081}
2082
2083static ssize_t clear_intrusion(struct device *dev,
2084 struct device_attribute *attr, const char *buf,
2085 size_t count)
2086{
2087 struct it87_data *data = dev_get_drvdata(dev);
2088 int err, config;
2089 long val;
2090
2091 if (kstrtol(buf, 10, &val) < 0 || val != 0)
2092 return -EINVAL;
2093
2094 err = it87_lock(data);
2095 if (err)
2096 return err;
2097
2098 config = it87_read_value(data, IT87_REG_CONFIG);
2099 if (config < 0) {
2100 count = config;
2101 } else {
2102 config |= BIT(5);
2103 it87_write_value(data, IT87_REG_CONFIG, config);
2104 /* Invalidate cache to force re-read */
2105 data->valid = false;
2106 }
2107 it87_unlock(data);
2108 return count;
2109}
2110
2111static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
2112static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
2113static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
2114static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
2115static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
2116static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
2117static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
2118static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
2119static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
2120static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
2121static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
2122static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
2123static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
2124static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 7);
2125static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
2126static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
2127static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
2128static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
2129 show_alarm, clear_intrusion, 4);
2130
2131static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
2132 char *buf)
2133{
2134 struct it87_data *data = it87_update_device(dev);
2135 int bitnr = to_sensor_dev_attr(attr)->index;
2136
2137 if (IS_ERR(data))
2138 return PTR_ERR(data);
2139
2140 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
2141}
2142
2143static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
2144 const char *buf, size_t count)
2145{
2146 int bitnr = to_sensor_dev_attr(attr)->index;
2147 struct it87_data *data = dev_get_drvdata(dev);
2148 long val;
2149 int err;
2150
2151 if (kstrtol(buf, 10, &val) < 0 || (val != 0 && val != 1))
2152 return -EINVAL;
2153
2154 err = it87_lock(data);
2155 if (err)
2156 return err;
2157
2158 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2159 if (val)
2160 data->beeps |= BIT(bitnr);
2161 else
2162 data->beeps &= ~BIT(bitnr);
2163 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
2164 it87_unlock(data);
2165 return count;
2166}
2167
2168static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
2169 show_beep, set_beep, 1);
2170static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
2171static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
2172static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
2173static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
2174static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
2175static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
2176static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
2177/* fanX_beep writability is set later */
2178static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
2179static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
2180static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
2181static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
2182static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
2183static SENSOR_DEVICE_ATTR(fan6_beep, S_IRUGO, show_beep, set_beep, 0);
2184static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
2185 show_beep, set_beep, 2);
2186static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
2187static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
2188
2189static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
2190 char *buf)
2191{
2192 struct it87_data *data = dev_get_drvdata(dev);
2193
2194 return sprintf(buf, "%u\n", data->vrm);
2195}
2196
2197static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
2198 const char *buf, size_t count)
2199{
2200 struct it87_data *data = dev_get_drvdata(dev);
2201 unsigned long val;
2202
2203 if (kstrtoul(buf, 10, &val) < 0)
2204 return -EINVAL;
2205
2206 data->vrm = val;
2207
2208 return count;
2209}
2210static DEVICE_ATTR_RW(vrm);
2211
2212static ssize_t cpu0_vid_show(struct device *dev,
2213 struct device_attribute *attr, char *buf)
2214{
2215 struct it87_data *data = it87_update_device(dev);
2216
2217 if (IS_ERR(data))
2218 return PTR_ERR(data);
2219
2220 return sprintf(buf, "%ld\n", (long)vid_from_reg(data->vid, data->vrm));
2221}
2222static DEVICE_ATTR_RO(cpu0_vid);
2223
2224static ssize_t show_label(struct device *dev, struct device_attribute *attr,
2225 char *buf)
2226{
2227 static const char * const labels[] = {
2228 "+5V",
2229 "5VSB",
2230 "Vbat",
2231 "AVCC",
2232 };
2233 static const char * const labels_it8721[] = {
2234 "+3.3V",
2235 "3VSB",
2236 "Vbat",
2237 "+3.3V",
2238 };
2239 struct it87_data *data = dev_get_drvdata(dev);
2240 int nr = to_sensor_dev_attr(attr)->index;
2241 const char *label;
2242
2243 if (has_vin3_5v(data) && nr == 0)
2244 label = labels[0];
2245 else if (has_scaling(data))
2246 label = labels_it8721[nr];
2247 else
2248 label = labels[nr];
2249
2250 return sprintf(buf, "%s\n", label);
2251}
2252static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
2253static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
2254static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
2255/* AVCC3 */
2256static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 3);
2257
2258static umode_t it87_in_is_visible(struct kobject *kobj,
2259 struct attribute *attr, int index)
2260{
2261 struct device *dev = kobj_to_dev(kobj);
2262 struct it87_data *data = dev_get_drvdata(dev);
2263 int i = index / 5; /* voltage index */
2264 int a = index % 5; /* attribute index */
2265
2266 if (index >= 40) { /* in8 and higher only have input attributes */
2267 i = index - 40 + 8;
2268 a = 0;
2269 }
2270
2271 if (!(data->has_in & BIT(i)))
2272 return 0;
2273
2274 if (a == 4 && !data->has_beep)
2275 return 0;
2276
2277 return attr->mode;
2278}
2279
2280static struct attribute *it87_attributes_in[] = {
2281 &sensor_dev_attr_in0_input.dev_attr.attr,
2282 &sensor_dev_attr_in0_min.dev_attr.attr,
2283 &sensor_dev_attr_in0_max.dev_attr.attr,
2284 &sensor_dev_attr_in0_alarm.dev_attr.attr,
2285 &sensor_dev_attr_in0_beep.dev_attr.attr, /* 4 */
2286
2287 &sensor_dev_attr_in1_input.dev_attr.attr,
2288 &sensor_dev_attr_in1_min.dev_attr.attr,
2289 &sensor_dev_attr_in1_max.dev_attr.attr,
2290 &sensor_dev_attr_in1_alarm.dev_attr.attr,
2291 &sensor_dev_attr_in1_beep.dev_attr.attr, /* 9 */
2292
2293 &sensor_dev_attr_in2_input.dev_attr.attr,
2294 &sensor_dev_attr_in2_min.dev_attr.attr,
2295 &sensor_dev_attr_in2_max.dev_attr.attr,
2296 &sensor_dev_attr_in2_alarm.dev_attr.attr,
2297 &sensor_dev_attr_in2_beep.dev_attr.attr, /* 14 */
2298
2299 &sensor_dev_attr_in3_input.dev_attr.attr,
2300 &sensor_dev_attr_in3_min.dev_attr.attr,
2301 &sensor_dev_attr_in3_max.dev_attr.attr,
2302 &sensor_dev_attr_in3_alarm.dev_attr.attr,
2303 &sensor_dev_attr_in3_beep.dev_attr.attr, /* 19 */
2304
2305 &sensor_dev_attr_in4_input.dev_attr.attr,
2306 &sensor_dev_attr_in4_min.dev_attr.attr,
2307 &sensor_dev_attr_in4_max.dev_attr.attr,
2308 &sensor_dev_attr_in4_alarm.dev_attr.attr,
2309 &sensor_dev_attr_in4_beep.dev_attr.attr, /* 24 */
2310
2311 &sensor_dev_attr_in5_input.dev_attr.attr,
2312 &sensor_dev_attr_in5_min.dev_attr.attr,
2313 &sensor_dev_attr_in5_max.dev_attr.attr,
2314 &sensor_dev_attr_in5_alarm.dev_attr.attr,
2315 &sensor_dev_attr_in5_beep.dev_attr.attr, /* 29 */
2316
2317 &sensor_dev_attr_in6_input.dev_attr.attr,
2318 &sensor_dev_attr_in6_min.dev_attr.attr,
2319 &sensor_dev_attr_in6_max.dev_attr.attr,
2320 &sensor_dev_attr_in6_alarm.dev_attr.attr,
2321 &sensor_dev_attr_in6_beep.dev_attr.attr, /* 34 */
2322
2323 &sensor_dev_attr_in7_input.dev_attr.attr,
2324 &sensor_dev_attr_in7_min.dev_attr.attr,
2325 &sensor_dev_attr_in7_max.dev_attr.attr,
2326 &sensor_dev_attr_in7_alarm.dev_attr.attr,
2327 &sensor_dev_attr_in7_beep.dev_attr.attr, /* 39 */
2328
2329 &sensor_dev_attr_in8_input.dev_attr.attr, /* 40 */
2330 &sensor_dev_attr_in9_input.dev_attr.attr,
2331 &sensor_dev_attr_in10_input.dev_attr.attr,
2332 &sensor_dev_attr_in11_input.dev_attr.attr,
2333 &sensor_dev_attr_in12_input.dev_attr.attr,
2334 NULL
2335};
2336
2337static const struct attribute_group it87_group_in = {
2338 .attrs = it87_attributes_in,
2339 .is_visible = it87_in_is_visible,
2340};
2341
2342static umode_t it87_temp_is_visible(struct kobject *kobj,
2343 struct attribute *attr, int index)
2344{
2345 struct device *dev = kobj_to_dev(kobj);
2346 struct it87_data *data = dev_get_drvdata(dev);
2347 int i = index / 7; /* temperature index */
2348 int a = index % 7; /* attribute index */
2349
2350 if (index >= 21) {
2351 i = index - 21 + 3;
2352 a = 0;
2353 }
2354
2355 if (!(data->has_temp & BIT(i)))
2356 return 0;
2357
2358 if (a == 3) {
2359 if (get_temp_type(data, i) == 0)
2360 return 0;
2361 return attr->mode;
2362 }
2363
2364 if (a == 5 && !has_temp_offset(data))
2365 return 0;
2366
2367 if (a == 6 && !data->has_beep)
2368 return 0;
2369
2370 return attr->mode;
2371}
2372
2373static struct attribute *it87_attributes_temp[] = {
2374 &sensor_dev_attr_temp1_input.dev_attr.attr,
2375 &sensor_dev_attr_temp1_max.dev_attr.attr,
2376 &sensor_dev_attr_temp1_min.dev_attr.attr,
2377 &sensor_dev_attr_temp1_type.dev_attr.attr,
2378 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
2379 &sensor_dev_attr_temp1_offset.dev_attr.attr, /* 5 */
2380 &sensor_dev_attr_temp1_beep.dev_attr.attr, /* 6 */
2381
2382 &sensor_dev_attr_temp2_input.dev_attr.attr, /* 7 */
2383 &sensor_dev_attr_temp2_max.dev_attr.attr,
2384 &sensor_dev_attr_temp2_min.dev_attr.attr,
2385 &sensor_dev_attr_temp2_type.dev_attr.attr,
2386 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
2387 &sensor_dev_attr_temp2_offset.dev_attr.attr,
2388 &sensor_dev_attr_temp2_beep.dev_attr.attr,
2389
2390 &sensor_dev_attr_temp3_input.dev_attr.attr, /* 14 */
2391 &sensor_dev_attr_temp3_max.dev_attr.attr,
2392 &sensor_dev_attr_temp3_min.dev_attr.attr,
2393 &sensor_dev_attr_temp3_type.dev_attr.attr,
2394 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
2395 &sensor_dev_attr_temp3_offset.dev_attr.attr,
2396 &sensor_dev_attr_temp3_beep.dev_attr.attr,
2397
2398 &sensor_dev_attr_temp4_input.dev_attr.attr, /* 21 */
2399 &sensor_dev_attr_temp5_input.dev_attr.attr,
2400 &sensor_dev_attr_temp6_input.dev_attr.attr,
2401 NULL
2402};
2403
2404static const struct attribute_group it87_group_temp = {
2405 .attrs = it87_attributes_temp,
2406 .is_visible = it87_temp_is_visible,
2407};
2408
2409static umode_t it87_is_visible(struct kobject *kobj,
2410 struct attribute *attr, int index)
2411{
2412 struct device *dev = kobj_to_dev(kobj);
2413 struct it87_data *data = dev_get_drvdata(dev);
2414
2415 if ((index == 2 || index == 3) && !data->has_vid)
2416 return 0;
2417
2418 if (index > 3 && !(data->in_internal & BIT(index - 4)))
2419 return 0;
2420
2421 return attr->mode;
2422}
2423
2424static struct attribute *it87_attributes[] = {
2425 &dev_attr_alarms.attr,
2426 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
2427 &dev_attr_vrm.attr, /* 2 */
2428 &dev_attr_cpu0_vid.attr, /* 3 */
2429 &sensor_dev_attr_in3_label.dev_attr.attr, /* 4 .. 7 */
2430 &sensor_dev_attr_in7_label.dev_attr.attr,
2431 &sensor_dev_attr_in8_label.dev_attr.attr,
2432 &sensor_dev_attr_in9_label.dev_attr.attr,
2433 NULL
2434};
2435
2436static const struct attribute_group it87_group = {
2437 .attrs = it87_attributes,
2438 .is_visible = it87_is_visible,
2439};
2440
2441static umode_t it87_fan_is_visible(struct kobject *kobj,
2442 struct attribute *attr, int index)
2443{
2444 struct device *dev = kobj_to_dev(kobj);
2445 struct it87_data *data = dev_get_drvdata(dev);
2446 int i = index / 5; /* fan index */
2447 int a = index % 5; /* attribute index */
2448
2449 if (index >= 15) { /* fan 4..6 don't have divisor attributes */
2450 i = (index - 15) / 4 + 3;
2451 a = (index - 15) % 4;
2452 }
2453
2454 if (!(data->has_fan & BIT(i)))
2455 return 0;
2456
2457 if (a == 3) { /* beep */
2458 if (!data->has_beep)
2459 return 0;
2460 /* first fan beep attribute is writable */
2461 if (i == __ffs(data->has_fan))
2462 return attr->mode | S_IWUSR;
2463 }
2464
2465 if (a == 4 && has_16bit_fans(data)) /* divisor */
2466 return 0;
2467
2468 return attr->mode;
2469}
2470
2471static struct attribute *it87_attributes_fan[] = {
2472 &sensor_dev_attr_fan1_input.dev_attr.attr,
2473 &sensor_dev_attr_fan1_min.dev_attr.attr,
2474 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
2475 &sensor_dev_attr_fan1_beep.dev_attr.attr, /* 3 */
2476 &sensor_dev_attr_fan1_div.dev_attr.attr, /* 4 */
2477
2478 &sensor_dev_attr_fan2_input.dev_attr.attr,
2479 &sensor_dev_attr_fan2_min.dev_attr.attr,
2480 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
2481 &sensor_dev_attr_fan2_beep.dev_attr.attr,
2482 &sensor_dev_attr_fan2_div.dev_attr.attr, /* 9 */
2483
2484 &sensor_dev_attr_fan3_input.dev_attr.attr,
2485 &sensor_dev_attr_fan3_min.dev_attr.attr,
2486 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
2487 &sensor_dev_attr_fan3_beep.dev_attr.attr,
2488 &sensor_dev_attr_fan3_div.dev_attr.attr, /* 14 */
2489
2490 &sensor_dev_attr_fan4_input.dev_attr.attr, /* 15 */
2491 &sensor_dev_attr_fan4_min.dev_attr.attr,
2492 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
2493 &sensor_dev_attr_fan4_beep.dev_attr.attr,
2494
2495 &sensor_dev_attr_fan5_input.dev_attr.attr, /* 19 */
2496 &sensor_dev_attr_fan5_min.dev_attr.attr,
2497 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
2498 &sensor_dev_attr_fan5_beep.dev_attr.attr,
2499
2500 &sensor_dev_attr_fan6_input.dev_attr.attr, /* 23 */
2501 &sensor_dev_attr_fan6_min.dev_attr.attr,
2502 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
2503 &sensor_dev_attr_fan6_beep.dev_attr.attr,
2504 NULL
2505};
2506
2507static const struct attribute_group it87_group_fan = {
2508 .attrs = it87_attributes_fan,
2509 .is_visible = it87_fan_is_visible,
2510};
2511
2512static umode_t it87_pwm_is_visible(struct kobject *kobj,
2513 struct attribute *attr, int index)
2514{
2515 struct device *dev = kobj_to_dev(kobj);
2516 struct it87_data *data = dev_get_drvdata(dev);
2517 int i = index / 4; /* pwm index */
2518 int a = index % 4; /* attribute index */
2519
2520 if (!(data->has_pwm & BIT(i)))
2521 return 0;
2522
2523 /* pwmX_auto_channels_temp is only writable if auto pwm is supported */
2524 if (a == 3 && (has_old_autopwm(data) || has_newer_autopwm(data)))
2525 return attr->mode | S_IWUSR;
2526
2527 /* pwm2_freq is writable if there are two pwm frequency selects */
2528 if (has_pwm_freq2(data) && i == 1 && a == 2)
2529 return attr->mode | S_IWUSR;
2530
2531 return attr->mode;
2532}
2533
2534static struct attribute *it87_attributes_pwm[] = {
2535 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
2536 &sensor_dev_attr_pwm1.dev_attr.attr,
2537 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
2538 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
2539
2540 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
2541 &sensor_dev_attr_pwm2.dev_attr.attr,
2542 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
2543 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
2544
2545 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
2546 &sensor_dev_attr_pwm3.dev_attr.attr,
2547 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
2548 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
2549
2550 &sensor_dev_attr_pwm4_enable.dev_attr.attr,
2551 &sensor_dev_attr_pwm4.dev_attr.attr,
2552 &sensor_dev_attr_pwm4_freq.dev_attr.attr,
2553 &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
2554
2555 &sensor_dev_attr_pwm5_enable.dev_attr.attr,
2556 &sensor_dev_attr_pwm5.dev_attr.attr,
2557 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
2558 &sensor_dev_attr_pwm5_auto_channels_temp.dev_attr.attr,
2559
2560 &sensor_dev_attr_pwm6_enable.dev_attr.attr,
2561 &sensor_dev_attr_pwm6.dev_attr.attr,
2562 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
2563 &sensor_dev_attr_pwm6_auto_channels_temp.dev_attr.attr,
2564
2565 NULL
2566};
2567
2568static const struct attribute_group it87_group_pwm = {
2569 .attrs = it87_attributes_pwm,
2570 .is_visible = it87_pwm_is_visible,
2571};
2572
2573static umode_t it87_auto_pwm_is_visible(struct kobject *kobj,
2574 struct attribute *attr, int index)
2575{
2576 struct device *dev = kobj_to_dev(kobj);
2577 struct it87_data *data = dev_get_drvdata(dev);
2578 int i = index / 11; /* pwm index */
2579 int a = index % 11; /* attribute index */
2580
2581 if (index >= 33) { /* pwm 4..6 */
2582 i = (index - 33) / 6 + 3;
2583 a = (index - 33) % 6 + 4;
2584 }
2585
2586 if (!(data->has_pwm & BIT(i)))
2587 return 0;
2588
2589 if (has_newer_autopwm(data)) {
2590 if (a < 4) /* no auto point pwm */
2591 return 0;
2592 if (a == 8) /* no auto_point4 */
2593 return 0;
2594 }
2595 if (has_old_autopwm(data)) {
2596 if (a >= 9) /* no pwm_auto_start, pwm_auto_slope */
2597 return 0;
2598 }
2599
2600 return attr->mode;
2601}
2602
2603static struct attribute *it87_attributes_auto_pwm[] = {
2604 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
2605 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
2606 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
2607 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
2608 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
2609 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
2610 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
2611 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
2612 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
2613 &sensor_dev_attr_pwm1_auto_start.dev_attr.attr,
2614 &sensor_dev_attr_pwm1_auto_slope.dev_attr.attr,
2615
2616 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, /* 11 */
2617 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
2618 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
2619 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
2620 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
2621 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
2622 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
2623 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
2624 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
2625 &sensor_dev_attr_pwm2_auto_start.dev_attr.attr,
2626 &sensor_dev_attr_pwm2_auto_slope.dev_attr.attr,
2627
2628 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, /* 22 */
2629 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
2630 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
2631 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
2632 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
2633 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
2634 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
2635 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
2636 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
2637 &sensor_dev_attr_pwm3_auto_start.dev_attr.attr,
2638 &sensor_dev_attr_pwm3_auto_slope.dev_attr.attr,
2639
2640 &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr, /* 33 */
2641 &sensor_dev_attr_pwm4_auto_point1_temp_hyst.dev_attr.attr,
2642 &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr,
2643 &sensor_dev_attr_pwm4_auto_point3_temp.dev_attr.attr,
2644 &sensor_dev_attr_pwm4_auto_start.dev_attr.attr,
2645 &sensor_dev_attr_pwm4_auto_slope.dev_attr.attr,
2646
2647 &sensor_dev_attr_pwm5_auto_point1_temp.dev_attr.attr,
2648 &sensor_dev_attr_pwm5_auto_point1_temp_hyst.dev_attr.attr,
2649 &sensor_dev_attr_pwm5_auto_point2_temp.dev_attr.attr,
2650 &sensor_dev_attr_pwm5_auto_point3_temp.dev_attr.attr,
2651 &sensor_dev_attr_pwm5_auto_start.dev_attr.attr,
2652 &sensor_dev_attr_pwm5_auto_slope.dev_attr.attr,
2653
2654 &sensor_dev_attr_pwm6_auto_point1_temp.dev_attr.attr,
2655 &sensor_dev_attr_pwm6_auto_point1_temp_hyst.dev_attr.attr,
2656 &sensor_dev_attr_pwm6_auto_point2_temp.dev_attr.attr,
2657 &sensor_dev_attr_pwm6_auto_point3_temp.dev_attr.attr,
2658 &sensor_dev_attr_pwm6_auto_start.dev_attr.attr,
2659 &sensor_dev_attr_pwm6_auto_slope.dev_attr.attr,
2660
2661 NULL,
2662};
2663
2664static const struct attribute_group it87_group_auto_pwm = {
2665 .attrs = it87_attributes_auto_pwm,
2666 .is_visible = it87_auto_pwm_is_visible,
2667};
2668
2669/* SuperIO detection - will change isa_address if a chip is found */
2670static int __init it87_find(int sioaddr, unsigned short *address,
2671 struct it87_sio_data *sio_data, int chip_cnt)
2672{
2673 int err;
2674 u16 chip_type;
2675 const struct it87_devices *config = NULL;
2676
2677 err = superio_enter(sioaddr);
2678 if (err)
2679 return err;
2680
2681 err = -ENODEV;
2682 chip_type = superio_inw(sioaddr, DEVID);
2683 /* check first for a valid chip before forcing chip id */
2684 if (chip_type == 0xffff)
2685 goto exit;
2686
2687 if (force_id_cnt == 1) {
2688 /* If only one value given use for all chips */
2689 if (force_id[0])
2690 chip_type = force_id[0];
2691 } else if (force_id[chip_cnt])
2692 chip_type = force_id[chip_cnt];
2693
2694 switch (chip_type) {
2695 case IT8705F_DEVID:
2696 sio_data->type = it87;
2697 break;
2698 case IT8712F_DEVID:
2699 sio_data->type = it8712;
2700 break;
2701 case IT8716F_DEVID:
2702 case IT8726F_DEVID:
2703 sio_data->type = it8716;
2704 break;
2705 case IT8718F_DEVID:
2706 sio_data->type = it8718;
2707 break;
2708 case IT8720F_DEVID:
2709 sio_data->type = it8720;
2710 break;
2711 case IT8721F_DEVID:
2712 sio_data->type = it8721;
2713 break;
2714 case IT8728F_DEVID:
2715 sio_data->type = it8728;
2716 break;
2717 case IT8732F_DEVID:
2718 sio_data->type = it8732;
2719 break;
2720 case IT8792E_DEVID:
2721 sio_data->type = it8792;
2722 break;
2723 case IT8771E_DEVID:
2724 sio_data->type = it8771;
2725 break;
2726 case IT8772E_DEVID:
2727 sio_data->type = it8772;
2728 break;
2729 case IT8781F_DEVID:
2730 sio_data->type = it8781;
2731 break;
2732 case IT8782F_DEVID:
2733 sio_data->type = it8782;
2734 break;
2735 case IT8783E_DEVID:
2736 sio_data->type = it8783;
2737 break;
2738 case IT8786E_DEVID:
2739 sio_data->type = it8786;
2740 break;
2741 case IT8790E_DEVID:
2742 sio_data->type = it8790;
2743 break;
2744 case IT8603E_DEVID:
2745 case IT8623E_DEVID:
2746 sio_data->type = it8603;
2747 break;
2748 case IT8620E_DEVID:
2749 sio_data->type = it8620;
2750 break;
2751 case IT8622E_DEVID:
2752 sio_data->type = it8622;
2753 break;
2754 case IT8628E_DEVID:
2755 sio_data->type = it8628;
2756 break;
2757 case IT87952E_DEVID:
2758 sio_data->type = it87952;
2759 break;
2760 case 0xffff: /* No device at all */
2761 goto exit;
2762 default:
2763 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
2764 goto exit;
2765 }
2766
2767 config = &it87_devices[sio_data->type];
2768
2769 superio_select(sioaddr, PME);
2770 if (!(superio_inb(sioaddr, IT87_ACT_REG) & 0x01)) {
2771 pr_info("Device (chip %s ioreg 0x%x) not activated, skipping\n",
2772 config->model, sioaddr);
2773 goto exit;
2774 }
2775
2776 *address = superio_inw(sioaddr, IT87_BASE_REG) & ~(IT87_EXTENT - 1);
2777 if (*address == 0) {
2778 pr_info("Base address not set (chip %s ioreg 0x%x), skipping\n",
2779 config->model, sioaddr);
2780 goto exit;
2781 }
2782
2783 err = 0;
2784 sio_data->sioaddr = sioaddr;
2785 sio_data->revision = superio_inb(sioaddr, DEVREV) & 0x0f;
2786 pr_info("Found %s chip at 0x%x, revision %d\n",
2787 it87_devices[sio_data->type].model,
2788 *address, sio_data->revision);
2789
2790 /* in7 (VSB or VCCH5V) is always internal on some chips */
2791 if (has_in7_internal(config))
2792 sio_data->internal |= BIT(1);
2793
2794 /* in8 (Vbat) is always internal */
2795 sio_data->internal |= BIT(2);
2796
2797 /* in9 (AVCC3), always internal if supported */
2798 if (has_avcc3(config))
2799 sio_data->internal |= BIT(3); /* in9 is AVCC */
2800 else
2801 sio_data->skip_in |= BIT(9);
2802
2803 if (!has_four_pwm(config))
2804 sio_data->skip_pwm |= BIT(3) | BIT(4) | BIT(5);
2805 else if (!has_five_pwm(config))
2806 sio_data->skip_pwm |= BIT(4) | BIT(5);
2807 else if (!has_six_pwm(config))
2808 sio_data->skip_pwm |= BIT(5);
2809
2810 if (!has_vid(config))
2811 sio_data->skip_vid = 1;
2812
2813 /* Read GPIO config and VID value from LDN 7 (GPIO) */
2814 if (sio_data->type == it87) {
2815 /* The IT8705F has a different LD number for GPIO */
2816 superio_select(sioaddr, 5);
2817 sio_data->beep_pin = superio_inb(sioaddr,
2818 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2819 } else if (sio_data->type == it8783) {
2820 int reg25, reg27, reg2a, reg2c, regef;
2821
2822 superio_select(sioaddr, GPIO);
2823
2824 reg25 = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2825 reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2826 reg2a = superio_inb(sioaddr, IT87_SIO_PINX1_REG);
2827 reg2c = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2828 regef = superio_inb(sioaddr, IT87_SIO_SPI_REG);
2829
2830 /* Check if fan3 is there or not */
2831 if ((reg27 & BIT(0)) || !(reg2c & BIT(2)))
2832 sio_data->skip_fan |= BIT(2);
2833 if ((reg25 & BIT(4)) ||
2834 (!(reg2a & BIT(1)) && (regef & BIT(0))))
2835 sio_data->skip_pwm |= BIT(2);
2836
2837 /* Check if fan2 is there or not */
2838 if (reg27 & BIT(7))
2839 sio_data->skip_fan |= BIT(1);
2840 if (reg27 & BIT(3))
2841 sio_data->skip_pwm |= BIT(1);
2842
2843 /* VIN5 */
2844 if ((reg27 & BIT(0)) || (reg2c & BIT(2)))
2845 sio_data->skip_in |= BIT(5); /* No VIN5 */
2846
2847 /* VIN6 */
2848 if (reg27 & BIT(1))
2849 sio_data->skip_in |= BIT(6); /* No VIN6 */
2850
2851 /*
2852 * VIN7
2853 * Does not depend on bit 2 of Reg2C, contrary to datasheet.
2854 */
2855 if (reg27 & BIT(2)) {
2856 /*
2857 * The data sheet is a bit unclear regarding the
2858 * internal voltage divider for VCCH5V. It says
2859 * "This bit enables and switches VIN7 (pin 91) to the
2860 * internal voltage divider for VCCH5V".
2861 * This is different to other chips, where the internal
2862 * voltage divider would connect VIN7 to an internal
2863 * voltage source. Maybe that is the case here as well.
2864 *
2865 * Since we don't know for sure, re-route it if that is
2866 * not the case, and ask the user to report if the
2867 * resulting voltage is sane.
2868 */
2869 if (!(reg2c & BIT(1))) {
2870 reg2c |= BIT(1);
2871 superio_outb(sioaddr, IT87_SIO_PINX2_REG,
2872 reg2c);
2873 sio_data->need_in7_reroute = true;
2874 pr_notice("Routing internal VCCH5V to in7.\n");
2875 }
2876 pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
2877 pr_notice("Please report if it displays a reasonable voltage.\n");
2878 }
2879
2880 if (reg2c & BIT(0))
2881 sio_data->internal |= BIT(0);
2882 if (reg2c & BIT(1))
2883 sio_data->internal |= BIT(1);
2884
2885 sio_data->beep_pin = superio_inb(sioaddr,
2886 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2887 } else if (sio_data->type == it8603) {
2888 int reg27, reg29;
2889
2890 superio_select(sioaddr, GPIO);
2891
2892 reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2893
2894 /* Check if fan3 is there or not */
2895 if (reg27 & BIT(6))
2896 sio_data->skip_pwm |= BIT(2);
2897 if (reg27 & BIT(7))
2898 sio_data->skip_fan |= BIT(2);
2899
2900 /* Check if fan2 is there or not */
2901 reg29 = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2902 if (reg29 & BIT(1))
2903 sio_data->skip_pwm |= BIT(1);
2904 if (reg29 & BIT(2))
2905 sio_data->skip_fan |= BIT(1);
2906
2907 sio_data->skip_in |= BIT(5); /* No VIN5 */
2908 sio_data->skip_in |= BIT(6); /* No VIN6 */
2909
2910 sio_data->beep_pin = superio_inb(sioaddr,
2911 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2912 } else if (sio_data->type == it8620 || sio_data->type == it8628) {
2913 int reg;
2914
2915 superio_select(sioaddr, GPIO);
2916
2917 /* Check for pwm5 */
2918 reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2919 if (reg & BIT(6))
2920 sio_data->skip_pwm |= BIT(4);
2921
2922 /* Check for fan4, fan5 */
2923 reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
2924 if (!(reg & BIT(5)))
2925 sio_data->skip_fan |= BIT(3);
2926 if (!(reg & BIT(4)))
2927 sio_data->skip_fan |= BIT(4);
2928
2929 /* Check for pwm3, fan3 */
2930 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2931 if (reg & BIT(6))
2932 sio_data->skip_pwm |= BIT(2);
2933 if (reg & BIT(7))
2934 sio_data->skip_fan |= BIT(2);
2935
2936 /* Check for pwm4 */
2937 reg = superio_inb(sioaddr, IT87_SIO_GPIO4_REG);
2938 if (reg & BIT(2))
2939 sio_data->skip_pwm |= BIT(3);
2940
2941 /* Check for pwm2, fan2 */
2942 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2943 if (reg & BIT(1))
2944 sio_data->skip_pwm |= BIT(1);
2945 if (reg & BIT(2))
2946 sio_data->skip_fan |= BIT(1);
2947 /* Check for pwm6, fan6 */
2948 if (!(reg & BIT(7))) {
2949 sio_data->skip_pwm |= BIT(5);
2950 sio_data->skip_fan |= BIT(5);
2951 }
2952
2953 /* Check if AVCC is on VIN3 */
2954 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2955 if (reg & BIT(0))
2956 sio_data->internal |= BIT(0);
2957 else
2958 sio_data->skip_in |= BIT(9);
2959
2960 sio_data->beep_pin = superio_inb(sioaddr,
2961 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2962 } else if (sio_data->type == it8622) {
2963 int reg;
2964
2965 superio_select(sioaddr, GPIO);
2966
2967 /* Check for pwm4, fan4 */
2968 reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2969 if (reg & BIT(6))
2970 sio_data->skip_fan |= BIT(3);
2971 if (reg & BIT(5))
2972 sio_data->skip_pwm |= BIT(3);
2973
2974 /* Check for pwm3, fan3, pwm5, fan5 */
2975 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2976 if (reg & BIT(6))
2977 sio_data->skip_pwm |= BIT(2);
2978 if (reg & BIT(7))
2979 sio_data->skip_fan |= BIT(2);
2980 if (reg & BIT(3))
2981 sio_data->skip_pwm |= BIT(4);
2982 if (reg & BIT(1))
2983 sio_data->skip_fan |= BIT(4);
2984
2985 /* Check for pwm2, fan2 */
2986 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2987 if (reg & BIT(1))
2988 sio_data->skip_pwm |= BIT(1);
2989 if (reg & BIT(2))
2990 sio_data->skip_fan |= BIT(1);
2991
2992 /* Check for AVCC */
2993 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2994 if (!(reg & BIT(0)))
2995 sio_data->skip_in |= BIT(9);
2996
2997 sio_data->beep_pin = superio_inb(sioaddr,
2998 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2999 } else if (sio_data->type == it8732) {
3000 int reg;
3001
3002 superio_select(sioaddr, GPIO);
3003
3004 /* Check for pwm2, fan2 */
3005 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
3006 if (reg & BIT(1))
3007 sio_data->skip_pwm |= BIT(1);
3008 if (reg & BIT(2))
3009 sio_data->skip_fan |= BIT(1);
3010
3011 /* Check for pwm3, fan3, fan4 */
3012 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
3013 if (reg & BIT(6))
3014 sio_data->skip_pwm |= BIT(2);
3015 if (reg & BIT(7))
3016 sio_data->skip_fan |= BIT(2);
3017 if (reg & BIT(5))
3018 sio_data->skip_fan |= BIT(3);
3019
3020 /* Check if AVCC is on VIN3 */
3021 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
3022 if (reg & BIT(0))
3023 sio_data->internal |= BIT(0);
3024
3025 sio_data->beep_pin = superio_inb(sioaddr,
3026 IT87_SIO_BEEP_PIN_REG) & 0x3f;
3027 } else {
3028 int reg;
3029 bool uart6;
3030
3031 superio_select(sioaddr, GPIO);
3032
3033 /* Check for fan4, fan5 */
3034 if (has_five_fans(config)) {
3035 reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
3036 switch (sio_data->type) {
3037 case it8718:
3038 if (reg & BIT(5))
3039 sio_data->skip_fan |= BIT(3);
3040 if (reg & BIT(4))
3041 sio_data->skip_fan |= BIT(4);
3042 break;
3043 case it8720:
3044 case it8721:
3045 case it8728:
3046 if (!(reg & BIT(5)))
3047 sio_data->skip_fan |= BIT(3);
3048 if (!(reg & BIT(4)))
3049 sio_data->skip_fan |= BIT(4);
3050 break;
3051 default:
3052 break;
3053 }
3054 }
3055
3056 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
3057 if (!sio_data->skip_vid) {
3058 /* We need at least 4 VID pins */
3059 if (reg & 0x0f) {
3060 pr_info("VID is disabled (pins used for GPIO)\n");
3061 sio_data->skip_vid = 1;
3062 }
3063 }
3064
3065 /* Check if fan3 is there or not */
3066 if (reg & BIT(6))
3067 sio_data->skip_pwm |= BIT(2);
3068 if (reg & BIT(7))
3069 sio_data->skip_fan |= BIT(2);
3070
3071 /* Check if fan2 is there or not */
3072 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
3073 if (reg & BIT(1))
3074 sio_data->skip_pwm |= BIT(1);
3075 if (reg & BIT(2))
3076 sio_data->skip_fan |= BIT(1);
3077
3078 if ((sio_data->type == it8718 || sio_data->type == it8720) &&
3079 !(sio_data->skip_vid))
3080 sio_data->vid_value = superio_inb(sioaddr,
3081 IT87_SIO_VID_REG);
3082
3083 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
3084
3085 uart6 = sio_data->type == it8782 && (reg & BIT(2));
3086
3087 /*
3088 * The IT8720F has no VIN7 pin, so VCCH5V should always be
3089 * routed internally to VIN7 with an internal divider.
3090 * Curiously, there still is a configuration bit to control
3091 * this, which means it can be set incorrectly. And even
3092 * more curiously, many boards out there are improperly
3093 * configured, even though the IT8720F datasheet claims
3094 * that the internal routing of VCCH5V to VIN7 is the default
3095 * setting. So we force the internal routing in this case.
3096 *
3097 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
3098 * If UART6 is enabled, re-route VIN7 to the internal divider
3099 * if that is not already the case.
3100 */
3101 if ((sio_data->type == it8720 || uart6) && !(reg & BIT(1))) {
3102 reg |= BIT(1);
3103 superio_outb(sioaddr, IT87_SIO_PINX2_REG, reg);
3104 sio_data->need_in7_reroute = true;
3105 pr_notice("Routing internal VCCH5V to in7\n");
3106 }
3107 if (reg & BIT(0))
3108 sio_data->internal |= BIT(0);
3109 if (reg & BIT(1))
3110 sio_data->internal |= BIT(1);
3111
3112 /*
3113 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
3114 * While VIN7 can be routed to the internal voltage divider,
3115 * VIN5 and VIN6 are not available if UART6 is enabled.
3116 *
3117 * Also, temp3 is not available if UART6 is enabled and TEMPIN3
3118 * is the temperature source. Since we can not read the
3119 * temperature source here, skip_temp is preliminary.
3120 */
3121 if (uart6) {
3122 sio_data->skip_in |= BIT(5) | BIT(6);
3123 sio_data->skip_temp |= BIT(2);
3124 }
3125
3126 sio_data->beep_pin = superio_inb(sioaddr,
3127 IT87_SIO_BEEP_PIN_REG) & 0x3f;
3128 }
3129 if (sio_data->beep_pin)
3130 pr_info("Beeping is supported\n");
3131
3132 /* Set values based on DMI matches */
3133 if (dmi_data)
3134 sio_data->skip_pwm |= dmi_data->skip_pwm;
3135
3136 if (config->smbus_bitmap) {
3137 u8 reg;
3138
3139 superio_select(sioaddr, PME);
3140 reg = superio_inb(sioaddr, IT87_SPECIAL_CFG_REG);
3141 sio_data->ec_special_config = reg;
3142 sio_data->smbus_bitmap = reg & config->smbus_bitmap;
3143 }
3144
3145exit:
3146 superio_exit(sioaddr, config ? has_conf_noexit(config) : false);
3147 return err;
3148}
3149
3150/*
3151 * Some chips seem to have default value 0xff for all limit
3152 * registers. For low voltage limits it makes no sense and triggers
3153 * alarms, so change to 0 instead. For high temperature limits, it
3154 * means -1 degree C, which surprisingly doesn't trigger an alarm,
3155 * but is still confusing, so change to 127 degrees C.
3156 */
3157static void it87_check_limit_regs(struct it87_data *data)
3158{
3159 int i, reg;
3160
3161 for (i = 0; i < NUM_VIN_LIMIT; i++) {
3162 reg = it87_read_value(data, IT87_REG_VIN_MIN(i));
3163 if (reg == 0xff)
3164 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
3165 }
3166 for (i = 0; i < NUM_TEMP_LIMIT; i++) {
3167 reg = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
3168 if (reg == 0xff)
3169 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
3170 }
3171}
3172
3173/* Check if voltage monitors are reset manually or by some reason */
3174static void it87_check_voltage_monitors_reset(struct it87_data *data)
3175{
3176 int reg;
3177
3178 reg = it87_read_value(data, IT87_REG_VIN_ENABLE);
3179 if ((reg & 0xff) == 0) {
3180 /* Enable all voltage monitors */
3181 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
3182 }
3183}
3184
3185/* Check if tachometers are reset manually or by some reason */
3186static void it87_check_tachometers_reset(struct platform_device *pdev)
3187{
3188 struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
3189 struct it87_data *data = platform_get_drvdata(pdev);
3190 u8 mask, fan_main_ctrl;
3191
3192 mask = 0x70 & ~(sio_data->skip_fan << 4);
3193 fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
3194 if ((fan_main_ctrl & mask) == 0) {
3195 /* Enable all fan tachometers */
3196 fan_main_ctrl |= mask;
3197 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
3198 fan_main_ctrl);
3199 }
3200}
3201
3202/* Set tachometers to 16-bit mode if needed */
3203static void it87_check_tachometers_16bit_mode(struct platform_device *pdev)
3204{
3205 struct it87_data *data = platform_get_drvdata(pdev);
3206 int reg;
3207
3208 if (!has_fan16_config(data))
3209 return;
3210
3211 reg = it87_read_value(data, IT87_REG_FAN_16BIT);
3212 if (~reg & 0x07 & data->has_fan) {
3213 dev_dbg(&pdev->dev,
3214 "Setting fan1-3 to 16-bit mode\n");
3215 it87_write_value(data, IT87_REG_FAN_16BIT,
3216 reg | 0x07);
3217 }
3218}
3219
3220static void it87_start_monitoring(struct it87_data *data)
3221{
3222 it87_write_value(data, IT87_REG_CONFIG,
3223 (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
3224 | (update_vbat ? 0x41 : 0x01));
3225}
3226
3227/* Called when we have found a new IT87. */
3228static void it87_init_device(struct platform_device *pdev)
3229{
3230 struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
3231 struct it87_data *data = platform_get_drvdata(pdev);
3232 int tmp, i;
3233
3234 /*
3235 * For each PWM channel:
3236 * - If it is in automatic mode, setting to manual mode should set
3237 * the fan to full speed by default.
3238 * - If it is in manual mode, we need a mapping to temperature
3239 * channels to use when later setting to automatic mode later.
3240 * Use a 1:1 mapping by default (we are clueless.)
3241 * In both cases, the value can (and should) be changed by the user
3242 * prior to switching to a different mode.
3243 * Note that this is no longer needed for the IT8721F and later, as
3244 * these have separate registers for the temperature mapping and the
3245 * manual duty cycle.
3246 */
3247 for (i = 0; i < NUM_AUTO_PWM; i++) {
3248 data->pwm_temp_map[i] = i;
3249 data->pwm_duty[i] = 0x7f; /* Full speed */
3250 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
3251 }
3252
3253 it87_check_limit_regs(data);
3254
3255 /*
3256 * Temperature channels are not forcibly enabled, as they can be
3257 * set to two different sensor types and we can't guess which one
3258 * is correct for a given system. These channels can be enabled at
3259 * run-time through the temp{1-3}_type sysfs accessors if needed.
3260 */
3261
3262 it87_check_voltage_monitors_reset(data);
3263
3264 it87_check_tachometers_reset(pdev);
3265
3266 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
3267 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
3268
3269 it87_check_tachometers_16bit_mode(pdev);
3270
3271 /* Check for additional fans */
3272 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
3273
3274 if (has_four_fans(data) && (tmp & BIT(4)))
3275 data->has_fan |= BIT(3); /* fan4 enabled */
3276 if (has_five_fans(data) && (tmp & BIT(5)))
3277 data->has_fan |= BIT(4); /* fan5 enabled */
3278 if (has_six_fans(data) && (tmp & BIT(2)))
3279 data->has_fan |= BIT(5); /* fan6 enabled */
3280
3281 /* Fan input pins may be used for alternative functions */
3282 data->has_fan &= ~sio_data->skip_fan;
3283
3284 /* Check if pwm5, pwm6 are enabled */
3285 if (has_six_pwm(data)) {
3286 /* The following code may be IT8620E specific */
3287 tmp = it87_read_value(data, IT87_REG_FAN_DIV);
3288 if ((tmp & 0xc0) == 0xc0)
3289 sio_data->skip_pwm |= BIT(4);
3290 if (!(tmp & BIT(3)))
3291 sio_data->skip_pwm |= BIT(5);
3292 }
3293
3294 it87_start_monitoring(data);
3295}
3296
3297/* Return 1 if and only if the PWM interface is safe to use */
3298static int it87_check_pwm(struct device *dev)
3299{
3300 struct it87_data *data = dev_get_drvdata(dev);
3301 /*
3302 * Some BIOSes fail to correctly configure the IT87 fans. All fans off
3303 * and polarity set to active low is sign that this is the case so we
3304 * disable pwm control to protect the user.
3305 */
3306 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
3307
3308 if ((tmp & 0x87) == 0) {
3309 if (fix_pwm_polarity) {
3310 /*
3311 * The user asks us to attempt a chip reconfiguration.
3312 * This means switching to active high polarity and
3313 * inverting all fan speed values.
3314 */
3315 int i;
3316 u8 pwm[3];
3317
3318 for (i = 0; i < ARRAY_SIZE(pwm); i++)
3319 pwm[i] = it87_read_value(data,
3320 IT87_REG_PWM[i]);
3321
3322 /*
3323 * If any fan is in automatic pwm mode, the polarity
3324 * might be correct, as suspicious as it seems, so we
3325 * better don't change anything (but still disable the
3326 * PWM interface).
3327 */
3328 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
3329 dev_info(dev,
3330 "Reconfiguring PWM to active high polarity\n");
3331 it87_write_value(data, IT87_REG_FAN_CTL,
3332 tmp | 0x87);
3333 for (i = 0; i < 3; i++)
3334 it87_write_value(data,
3335 IT87_REG_PWM[i],
3336 0x7f & ~pwm[i]);
3337 return 1;
3338 }
3339
3340 dev_info(dev,
3341 "PWM configuration is too broken to be fixed\n");
3342 }
3343
3344 return 0;
3345 } else if (fix_pwm_polarity) {
3346 dev_info(dev,
3347 "PWM configuration looks sane, won't touch\n");
3348 }
3349
3350 return 1;
3351}
3352
3353static int it87_probe(struct platform_device *pdev)
3354{
3355 struct it87_data *data;
3356 struct resource *res;
3357 struct device *dev = &pdev->dev;
3358 struct it87_sio_data *sio_data = dev_get_platdata(dev);
3359 int enable_pwm_interface;
3360 struct device *hwmon_dev;
3361 int err;
3362
3363 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
3364 if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
3365 DRVNAME)) {
3366 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
3367 (unsigned long)res->start,
3368 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
3369 return -EBUSY;
3370 }
3371
3372 data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
3373 if (!data)
3374 return -ENOMEM;
3375
3376 data->addr = res->start;
3377 data->sioaddr = sio_data->sioaddr;
3378 data->type = sio_data->type;
3379 data->smbus_bitmap = sio_data->smbus_bitmap;
3380 data->ec_special_config = sio_data->ec_special_config;
3381 data->features = it87_devices[sio_data->type].features;
3382 data->peci_mask = it87_devices[sio_data->type].peci_mask;
3383 data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
3384 /*
3385 * IT8705F Datasheet 0.4.1, 3h == Version G.
3386 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
3387 * These are the first revisions with 16-bit tachometer support.
3388 */
3389 switch (data->type) {
3390 case it87:
3391 if (sio_data->revision >= 0x03) {
3392 data->features &= ~FEAT_OLD_AUTOPWM;
3393 data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS;
3394 }
3395 break;
3396 case it8712:
3397 if (sio_data->revision >= 0x08) {
3398 data->features &= ~FEAT_OLD_AUTOPWM;
3399 data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS |
3400 FEAT_FIVE_FANS;
3401 }
3402 break;
3403 default:
3404 break;
3405 }
3406
3407 platform_set_drvdata(pdev, data);
3408
3409 mutex_init(&data->update_lock);
3410
3411 err = smbus_disable(data);
3412 if (err)
3413 return err;
3414
3415 /* Now, we do the remaining detection. */
3416 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) ||
3417 it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
3418 smbus_enable(data);
3419 return -ENODEV;
3420 }
3421
3422 /* Check PWM configuration */
3423 enable_pwm_interface = it87_check_pwm(dev);
3424 if (!enable_pwm_interface)
3425 dev_info(dev,
3426 "Detected broken BIOS defaults, disabling PWM interface\n");
3427
3428 /* Starting with IT8721F, we handle scaling of internal voltages */
3429 if (has_scaling(data)) {
3430 if (sio_data->internal & BIT(0))
3431 data->in_scaled |= BIT(3); /* in3 is AVCC */
3432 if (sio_data->internal & BIT(1))
3433 data->in_scaled |= BIT(7); /* in7 is VSB */
3434 if (sio_data->internal & BIT(2))
3435 data->in_scaled |= BIT(8); /* in8 is Vbat */
3436 if (sio_data->internal & BIT(3))
3437 data->in_scaled |= BIT(9); /* in9 is AVCC */
3438 } else if (sio_data->type == it8781 || sio_data->type == it8782 ||
3439 sio_data->type == it8783) {
3440 if (sio_data->internal & BIT(0))
3441 data->in_scaled |= BIT(3); /* in3 is VCC5V */
3442 if (sio_data->internal & BIT(1))
3443 data->in_scaled |= BIT(7); /* in7 is VCCH5V */
3444 }
3445
3446 data->has_temp = 0x07;
3447 if (sio_data->skip_temp & BIT(2)) {
3448 if (sio_data->type == it8782 &&
3449 !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
3450 data->has_temp &= ~BIT(2);
3451 }
3452
3453 data->in_internal = sio_data->internal;
3454 data->need_in7_reroute = sio_data->need_in7_reroute;
3455 data->has_in = 0x3ff & ~sio_data->skip_in;
3456
3457 if (has_four_temp(data)) {
3458 data->has_temp |= BIT(3);
3459 } else if (has_six_temp(data)) {
3460 u8 reg = it87_read_value(data, IT87_REG_TEMP456_ENABLE);
3461
3462 /* Check for additional temperature sensors */
3463 if ((reg & 0x03) >= 0x02)
3464 data->has_temp |= BIT(3);
3465 if (((reg >> 2) & 0x03) >= 0x02)
3466 data->has_temp |= BIT(4);
3467 if (((reg >> 4) & 0x03) >= 0x02)
3468 data->has_temp |= BIT(5);
3469
3470 /* Check for additional voltage sensors */
3471 if ((reg & 0x03) == 0x01)
3472 data->has_in |= BIT(10);
3473 if (((reg >> 2) & 0x03) == 0x01)
3474 data->has_in |= BIT(11);
3475 if (((reg >> 4) & 0x03) == 0x01)
3476 data->has_in |= BIT(12);
3477 }
3478
3479 data->has_beep = !!sio_data->beep_pin;
3480
3481 /* Initialize the IT87 chip */
3482 it87_init_device(pdev);
3483
3484 smbus_enable(data);
3485
3486 if (!sio_data->skip_vid) {
3487 data->has_vid = true;
3488 data->vrm = vid_which_vrm();
3489 /* VID reading from Super-I/O config space if available */
3490 data->vid = sio_data->vid_value;
3491 }
3492
3493 /* Prepare for sysfs hooks */
3494 data->groups[0] = &it87_group;
3495 data->groups[1] = &it87_group_in;
3496 data->groups[2] = &it87_group_temp;
3497 data->groups[3] = &it87_group_fan;
3498
3499 if (enable_pwm_interface) {
3500 data->has_pwm = BIT(ARRAY_SIZE(IT87_REG_PWM)) - 1;
3501 data->has_pwm &= ~sio_data->skip_pwm;
3502
3503 data->groups[4] = &it87_group_pwm;
3504 if (has_old_autopwm(data) || has_newer_autopwm(data))
3505 data->groups[5] = &it87_group_auto_pwm;
3506 }
3507
3508 hwmon_dev = devm_hwmon_device_register_with_groups(dev,
3509 it87_devices[sio_data->type].name,
3510 data, data->groups);
3511 return PTR_ERR_OR_ZERO(hwmon_dev);
3512}
3513
3514static void it87_resume_sio(struct platform_device *pdev)
3515{
3516 struct it87_data *data = dev_get_drvdata(&pdev->dev);
3517 int err;
3518 int reg2c;
3519
3520 if (!data->need_in7_reroute)
3521 return;
3522
3523 err = superio_enter(data->sioaddr);
3524 if (err) {
3525 dev_warn(&pdev->dev,
3526 "Unable to enter Super I/O to reroute in7 (%d)",
3527 err);
3528 return;
3529 }
3530
3531 superio_select(data->sioaddr, GPIO);
3532
3533 reg2c = superio_inb(data->sioaddr, IT87_SIO_PINX2_REG);
3534 if (!(reg2c & BIT(1))) {
3535 dev_dbg(&pdev->dev,
3536 "Routing internal VCCH5V to in7 again");
3537
3538 reg2c |= BIT(1);
3539 superio_outb(data->sioaddr, IT87_SIO_PINX2_REG,
3540 reg2c);
3541 }
3542
3543 superio_exit(data->sioaddr, has_conf_noexit(data));
3544}
3545
3546static int it87_resume(struct device *dev)
3547{
3548 struct platform_device *pdev = to_platform_device(dev);
3549 struct it87_data *data = dev_get_drvdata(dev);
3550
3551 it87_resume_sio(pdev);
3552
3553 it87_lock(data);
3554
3555 it87_check_pwm(dev);
3556 it87_check_limit_regs(data);
3557 it87_check_voltage_monitors_reset(data);
3558 it87_check_tachometers_reset(pdev);
3559 it87_check_tachometers_16bit_mode(pdev);
3560
3561 it87_start_monitoring(data);
3562
3563 /* force update */
3564 data->valid = false;
3565
3566 it87_unlock(data);
3567
3568 it87_update_device(dev);
3569
3570 return 0;
3571}
3572
3573static DEFINE_SIMPLE_DEV_PM_OPS(it87_dev_pm_ops, NULL, it87_resume);
3574
3575static struct platform_driver it87_driver = {
3576 .driver = {
3577 .name = DRVNAME,
3578 .pm = pm_sleep_ptr(&it87_dev_pm_ops),
3579 },
3580 .probe = it87_probe,
3581};
3582
3583static int __init it87_device_add(int index, unsigned short address,
3584 const struct it87_sio_data *sio_data)
3585{
3586 struct platform_device *pdev;
3587 struct resource res = {
3588 .start = address + IT87_EC_OFFSET,
3589 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
3590 .name = DRVNAME,
3591 .flags = IORESOURCE_IO,
3592 };
3593 int err;
3594
3595 err = acpi_check_resource_conflict(&res);
3596 if (err) {
3597 if (!ignore_resource_conflict)
3598 return err;
3599 }
3600
3601 pdev = platform_device_alloc(DRVNAME, address);
3602 if (!pdev)
3603 return -ENOMEM;
3604
3605 err = platform_device_add_resources(pdev, &res, 1);
3606 if (err) {
3607 pr_err("Device resource addition failed (%d)\n", err);
3608 goto exit_device_put;
3609 }
3610
3611 err = platform_device_add_data(pdev, sio_data,
3612 sizeof(struct it87_sio_data));
3613 if (err) {
3614 pr_err("Platform data allocation failed\n");
3615 goto exit_device_put;
3616 }
3617
3618 err = platform_device_add(pdev);
3619 if (err) {
3620 pr_err("Device addition failed (%d)\n", err);
3621 goto exit_device_put;
3622 }
3623
3624 it87_pdev[index] = pdev;
3625 return 0;
3626
3627exit_device_put:
3628 platform_device_put(pdev);
3629 return err;
3630}
3631
3632/* callback function for DMI */
3633static int it87_dmi_cb(const struct dmi_system_id *dmi_entry)
3634{
3635 dmi_data = dmi_entry->driver_data;
3636
3637 if (dmi_data && dmi_data->skip_pwm)
3638 pr_info("Disabling pwm2 due to hardware constraints\n");
3639
3640 return 1;
3641}
3642
3643/*
3644 * On various Gigabyte AM4 boards (AB350, AX370), the second Super-IO chip
3645 * (IT8792E) needs to be in configuration mode before accessing the first
3646 * due to a bug in IT8792E which otherwise results in LPC bus access errors.
3647 * This needs to be done before accessing the first Super-IO chip since
3648 * the second chip may have been accessed prior to loading this driver.
3649 *
3650 * The problem is also reported to affect IT8795E, which is used on X299 boards
3651 * and has the same chip ID as IT8792E (0x8733). It also appears to affect
3652 * systems with IT8790E, which is used on some Z97X-Gaming boards as well as
3653 * Z87X-OC.
3654 * DMI entries for those systems will be added as they become available and
3655 * as the problem is confirmed to affect those boards.
3656 */
3657static int it87_sio_force(const struct dmi_system_id *dmi_entry)
3658{
3659 __superio_enter(REG_4E);
3660
3661 return it87_dmi_cb(dmi_entry);
3662};
3663
3664/*
3665 * On the Shuttle SN68PT, FAN_CTL2 is apparently not
3666 * connected to a fan, but to something else. One user
3667 * has reported instant system power-off when changing
3668 * the PWM2 duty cycle, so we disable it.
3669 * I use the board name string as the trigger in case
3670 * the same board is ever used in other systems.
3671 */
3672static struct it87_dmi_data nvidia_fn68pt = {
3673 .skip_pwm = BIT(1),
3674};
3675
3676#define IT87_DMI_MATCH_VND(vendor, name, cb, data) \
3677 { \
3678 .callback = cb, \
3679 .matches = { \
3680 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, vendor), \
3681 DMI_EXACT_MATCH(DMI_BOARD_NAME, name), \
3682 }, \
3683 .driver_data = data, \
3684 }
3685
3686#define IT87_DMI_MATCH_GBT(name, cb, data) \
3687 IT87_DMI_MATCH_VND("Gigabyte Technology Co., Ltd.", name, cb, data)
3688
3689static const struct dmi_system_id it87_dmi_table[] __initconst = {
3690 IT87_DMI_MATCH_GBT("AB350", it87_sio_force, NULL),
3691 /* ? + IT8792E/IT8795E */
3692 IT87_DMI_MATCH_GBT("AX370", it87_sio_force, NULL),
3693 /* ? + IT8792E/IT8795E */
3694 IT87_DMI_MATCH_GBT("Z97X-Gaming G1", it87_sio_force, NULL),
3695 /* ? + IT8790E */
3696 IT87_DMI_MATCH_GBT("TRX40 AORUS XTREME", it87_sio_force, NULL),
3697 /* IT8688E + IT8792E/IT8795E */
3698 IT87_DMI_MATCH_GBT("Z390 AORUS ULTRA-CF", it87_sio_force, NULL),
3699 /* IT8688E + IT8792E/IT8795E */
3700 IT87_DMI_MATCH_GBT("B550 AORUS PRO AC", it87_sio_force, NULL),
3701 /* IT8688E + IT8792E/IT8795E */
3702 IT87_DMI_MATCH_GBT("X570 AORUS MASTER", it87_sio_force, NULL),
3703 /* IT8688E + IT8792E/IT8795E */
3704 IT87_DMI_MATCH_GBT("X570 AORUS PRO", it87_sio_force, NULL),
3705 /* IT8688E + IT8792E/IT8795E */
3706 IT87_DMI_MATCH_GBT("X570 AORUS PRO WIFI", it87_sio_force, NULL),
3707 /* IT8688E + IT8792E/IT8795E */
3708 IT87_DMI_MATCH_GBT("X570S AERO G", it87_sio_force, NULL),
3709 /* IT8689E + IT87952E */
3710 IT87_DMI_MATCH_GBT("Z690 AORUS PRO DDR4", it87_sio_force, NULL),
3711 /* IT8689E + IT87952E */
3712 IT87_DMI_MATCH_GBT("Z690 AORUS PRO", it87_sio_force, NULL),
3713 /* IT8689E + IT87952E */
3714 IT87_DMI_MATCH_VND("nVIDIA", "FN68PT", it87_dmi_cb, &nvidia_fn68pt),
3715 { }
3716
3717};
3718MODULE_DEVICE_TABLE(dmi, it87_dmi_table);
3719
3720static int __init sm_it87_init(void)
3721{
3722 int sioaddr[2] = { REG_2E, REG_4E };
3723 struct it87_sio_data sio_data;
3724 unsigned short isa_address[2];
3725 bool found = false;
3726 int i, err;
3727
3728 err = platform_driver_register(&it87_driver);
3729 if (err)
3730 return err;
3731
3732 dmi_check_system(it87_dmi_table);
3733
3734 for (i = 0; i < ARRAY_SIZE(sioaddr); i++) {
3735 memset(&sio_data, 0, sizeof(struct it87_sio_data));
3736 isa_address[i] = 0;
3737 err = it87_find(sioaddr[i], &isa_address[i], &sio_data, i);
3738 if (err || isa_address[i] == 0)
3739 continue;
3740 /*
3741 * Don't register second chip if its ISA address matches
3742 * the first chip's ISA address.
3743 */
3744 if (i && isa_address[i] == isa_address[0])
3745 break;
3746
3747 err = it87_device_add(i, isa_address[i], &sio_data);
3748 if (err)
3749 goto exit_dev_unregister;
3750
3751 found = true;
3752
3753 /*
3754 * IT8705F may respond on both SIO addresses.
3755 * Stop probing after finding one.
3756 */
3757 if (sio_data.type == it87)
3758 break;
3759 }
3760
3761 if (!found) {
3762 err = -ENODEV;
3763 goto exit_unregister;
3764 }
3765 return 0;
3766
3767exit_dev_unregister:
3768 /* NULL check handled by platform_device_unregister */
3769 platform_device_unregister(it87_pdev[0]);
3770exit_unregister:
3771 platform_driver_unregister(&it87_driver);
3772 return err;
3773}
3774
3775static void __exit sm_it87_exit(void)
3776{
3777 /* NULL check handled by platform_device_unregister */
3778 platform_device_unregister(it87_pdev[1]);
3779 platform_device_unregister(it87_pdev[0]);
3780 platform_driver_unregister(&it87_driver);
3781}
3782
3783MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>");
3784MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
3785
3786module_param_array(force_id, ushort, &force_id_cnt, 0);
3787MODULE_PARM_DESC(force_id, "Override one or more detected device ID(s)");
3788
3789module_param(ignore_resource_conflict, bool, 0);
3790MODULE_PARM_DESC(ignore_resource_conflict, "Ignore ACPI resource conflict");
3791
3792module_param(update_vbat, bool, 0);
3793MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
3794
3795module_param(fix_pwm_polarity, bool, 0);
3796MODULE_PARM_DESC(fix_pwm_polarity,
3797 "Force PWM polarity to active high (DANGEROUS)");
3798
3799MODULE_LICENSE("GPL");
3800
3801module_init(sm_it87_init);
3802module_exit(sm_it87_exit);