2 * it87.c - Part of lm_sensors, Linux kernel modules for hardware
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
10 * This driver supports only the Environment Controller in the IT8705F and
11 * similar parts. The other devices are supported by different drivers.
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 * IT8728F Super I/O chip w/LPC interface
21 * IT8758E Super I/O chip w/LPC interface
22 * IT8782F Super I/O chip w/LPC interface
23 * IT8783E/F Super I/O chip w/LPC interface
24 * Sis950 A clone of the IT8705F
26 * Copyright (C) 2001 Chris Gauthron
27 * Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org>
29 * This program is free software; you can redistribute it and/or modify
30 * it under the terms of the GNU General Public License as published by
31 * the Free Software Foundation; either version 2 of the License, or
32 * (at your option) any later version.
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
39 * You should have received a copy of the GNU General Public License
40 * along with this program; if not, write to the Free Software
41 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
44 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
46 #include <linux/module.h>
47 #include <linux/init.h>
48 #include <linux/slab.h>
49 #include <linux/jiffies.h>
50 #include <linux/platform_device.h>
51 #include <linux/hwmon.h>
52 #include <linux/hwmon-sysfs.h>
53 #include <linux/hwmon-vid.h>
54 #include <linux/err.h>
55 #include <linux/mutex.h>
56 #include <linux/sysfs.h>
57 #include <linux/string.h>
58 #include <linux/dmi.h>
59 #include <linux/acpi.h>
62 #define DRVNAME "it87"
64 enum chips
{ it87
, it8712
, it8716
, it8718
, it8720
, it8721
, it8728
, it8782
,
67 static unsigned short force_id
;
68 module_param(force_id
, ushort
, 0);
69 MODULE_PARM_DESC(force_id
, "Override the detected device ID");
71 static struct platform_device
*pdev
;
73 #define REG 0x2e /* The register to read/write */
74 #define DEV 0x07 /* Register: Logical device select */
75 #define VAL 0x2f /* The value to read/write */
76 #define PME 0x04 /* The device with the fan registers in it */
78 /* The device with the IT8718F/IT8720F VID value in it */
81 #define DEVID 0x20 /* Register: Device ID */
82 #define DEVREV 0x22 /* Register: Device Revision */
84 static inline int superio_inb(int reg
)
90 static inline void superio_outb(int reg
, int val
)
96 static int superio_inw(int reg
)
106 static inline void superio_select(int ldn
)
112 static inline int superio_enter(void)
115 * Try to reserve REG and REG + 1 for exclusive access.
117 if (!request_muxed_region(REG
, 2, DRVNAME
))
127 static inline void superio_exit(void)
131 release_region(REG
, 2);
134 /* Logical device 4 registers */
135 #define IT8712F_DEVID 0x8712
136 #define IT8705F_DEVID 0x8705
137 #define IT8716F_DEVID 0x8716
138 #define IT8718F_DEVID 0x8718
139 #define IT8720F_DEVID 0x8720
140 #define IT8721F_DEVID 0x8721
141 #define IT8726F_DEVID 0x8726
142 #define IT8728F_DEVID 0x8728
143 #define IT8782F_DEVID 0x8782
144 #define IT8783E_DEVID 0x8783
145 #define IT87_ACT_REG 0x30
146 #define IT87_BASE_REG 0x60
148 /* Logical device 7 registers (IT8712F and later) */
149 #define IT87_SIO_GPIO1_REG 0x25
150 #define IT87_SIO_GPIO3_REG 0x27
151 #define IT87_SIO_GPIO5_REG 0x29
152 #define IT87_SIO_PINX1_REG 0x2a /* Pin selection */
153 #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
154 #define IT87_SIO_SPI_REG 0xef /* SPI function pin select */
155 #define IT87_SIO_VID_REG 0xfc /* VID value */
156 #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
158 /* Update battery voltage after every reading if true */
159 static bool update_vbat
;
161 /* Not all BIOSes properly configure the PWM registers */
162 static bool fix_pwm_polarity
;
164 /* Many IT87 constants specified below */
166 /* Length of ISA address segment */
167 #define IT87_EXTENT 8
169 /* Length of ISA address segment for Environmental Controller */
170 #define IT87_EC_EXTENT 2
172 /* Offset of EC registers from ISA base address */
173 #define IT87_EC_OFFSET 5
175 /* Where are the ISA address/data registers relative to the EC base address */
176 #define IT87_ADDR_REG_OFFSET 0
177 #define IT87_DATA_REG_OFFSET 1
179 /*----- The IT87 registers -----*/
181 #define IT87_REG_CONFIG 0x00
183 #define IT87_REG_ALARM1 0x01
184 #define IT87_REG_ALARM2 0x02
185 #define IT87_REG_ALARM3 0x03
188 * The IT8718F and IT8720F have the VID value in a different register, in
189 * Super-I/O configuration space.
191 #define IT87_REG_VID 0x0a
193 * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
194 * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
197 #define IT87_REG_FAN_DIV 0x0b
198 #define IT87_REG_FAN_16BIT 0x0c
200 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
202 static const u8 IT87_REG_FAN
[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
203 static const u8 IT87_REG_FAN_MIN
[] = { 0x10, 0x11, 0x12, 0x84, 0x86 };
204 static const u8 IT87_REG_FANX
[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
205 static const u8 IT87_REG_FANX_MIN
[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
206 #define IT87_REG_FAN_MAIN_CTRL 0x13
207 #define IT87_REG_FAN_CTL 0x14
208 #define IT87_REG_PWM(nr) (0x15 + (nr))
209 #define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8)
211 #define IT87_REG_VIN(nr) (0x20 + (nr))
212 #define IT87_REG_TEMP(nr) (0x29 + (nr))
214 #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
215 #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
216 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
217 #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
219 #define IT87_REG_VIN_ENABLE 0x50
220 #define IT87_REG_TEMP_ENABLE 0x51
221 #define IT87_REG_TEMP_EXTRA 0x55
222 #define IT87_REG_BEEP_ENABLE 0x5c
224 #define IT87_REG_CHIPID 0x58
226 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
227 #define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i))
230 struct it87_sio_data
{
232 /* Values read from Super-I/O config space */
236 u8 internal
; /* Internal sensors can be labeled */
237 /* Features skipped based on config or DMI */
246 * For each registered chip, we need to keep some data in memory.
247 * The structure is dynamically allocated.
250 struct device
*hwmon_dev
;
256 struct mutex update_lock
;
257 char valid
; /* !=0 if following fields are valid */
258 unsigned long last_updated
; /* In jiffies */
260 u16 in_scaled
; /* Internal voltage sensors are scaled */
261 u8 in
[9]; /* Register value */
262 u8 in_max
[8]; /* Register value */
263 u8 in_min
[8]; /* Register value */
264 u8 has_fan
; /* Bitfield, fans enabled */
265 u16 fan
[5]; /* Register values, possibly combined */
266 u16 fan_min
[5]; /* Register values, possibly combined */
267 u8 has_temp
; /* Bitfield, temp sensors enabled */
268 s8 temp
[3]; /* Register value */
269 s8 temp_high
[3]; /* Register value */
270 s8 temp_low
[3]; /* Register value */
271 u8 sensor
; /* Register value */
272 u8 fan_div
[3]; /* Register encoding, shifted right */
273 u8 vid
; /* Register encoding, combined */
275 u32 alarms
; /* Register encoding, combined */
276 u8 beeps
; /* Register encoding */
277 u8 fan_main_ctrl
; /* Register value */
278 u8 fan_ctl
; /* Register value */
281 * The following 3 arrays correspond to the same registers up to
282 * the IT8720F. The meaning of bits 6-0 depends on the value of bit
283 * 7, and we want to preserve settings on mode changes, so we have
284 * to track all values separately.
285 * Starting with the IT8721F, the manual PWM duty cycles are stored
286 * in separate registers (8-bit values), so the separate tracking
287 * is no longer needed, but it is still done to keep the driver
290 u8 pwm_ctrl
[3]; /* Register value */
291 u8 pwm_duty
[3]; /* Manual PWM value set by user */
292 u8 pwm_temp_map
[3]; /* PWM to temp. chan. mapping (bits 1-0) */
294 /* Automatic fan speed control registers */
295 u8 auto_pwm
[3][4]; /* [nr][3] is hard-coded */
296 s8 auto_temp
[3][5]; /* [nr][0] is point1_temp_hyst */
299 static inline int has_12mv_adc(const struct it87_data
*data
)
302 * IT8721F and later have a 12 mV ADC, also with internal scaling
303 * on selected inputs.
305 return data
->type
== it8721
306 || data
->type
== it8728
;
309 static inline int has_newer_autopwm(const struct it87_data
*data
)
312 * IT8721F and later have separate registers for the temperature
313 * mapping and the manual duty cycle.
315 return data
->type
== it8721
316 || data
->type
== it8728
;
319 static int adc_lsb(const struct it87_data
*data
, int nr
)
321 int lsb
= has_12mv_adc(data
) ? 12 : 16;
322 if (data
->in_scaled
& (1 << nr
))
327 static u8
in_to_reg(const struct it87_data
*data
, int nr
, long val
)
329 val
= DIV_ROUND_CLOSEST(val
, adc_lsb(data
, nr
));
330 return SENSORS_LIMIT(val
, 0, 255);
333 static int in_from_reg(const struct it87_data
*data
, int nr
, int val
)
335 return val
* adc_lsb(data
, nr
);
338 static inline u8
FAN_TO_REG(long rpm
, int div
)
342 rpm
= SENSORS_LIMIT(rpm
, 1, 1000000);
343 return SENSORS_LIMIT((1350000 + rpm
* div
/ 2) / (rpm
* div
), 1,
347 static inline u16
FAN16_TO_REG(long rpm
)
351 return SENSORS_LIMIT((1350000 + rpm
) / (rpm
* 2), 1, 0xfffe);
354 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
355 1350000 / ((val) * (div)))
356 /* The divider is fixed to 2 in 16-bit mode */
357 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
358 1350000 / ((val) * 2))
360 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
361 ((val) + 500) / 1000), -128, 127))
362 #define TEMP_FROM_REG(val) ((val) * 1000)
364 static u8
pwm_to_reg(const struct it87_data
*data
, long val
)
366 if (has_newer_autopwm(data
))
372 static int pwm_from_reg(const struct it87_data
*data
, u8 reg
)
374 if (has_newer_autopwm(data
))
377 return (reg
& 0x7f) << 1;
381 static int DIV_TO_REG(int val
)
384 while (answer
< 7 && (val
>>= 1))
388 #define DIV_FROM_REG(val) (1 << (val))
390 static const unsigned int pwm_freq
[8] = {
401 static inline int has_16bit_fans(const struct it87_data
*data
)
404 * IT8705F Datasheet 0.4.1, 3h == Version G.
405 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
406 * These are the first revisions with 16-bit tachometer support.
408 return (data
->type
== it87
&& data
->revision
>= 0x03)
409 || (data
->type
== it8712
&& data
->revision
>= 0x08)
410 || data
->type
== it8716
411 || data
->type
== it8718
412 || data
->type
== it8720
413 || data
->type
== it8721
414 || data
->type
== it8728
415 || data
->type
== it8782
416 || data
->type
== it8783
;
419 static inline int has_old_autopwm(const struct it87_data
*data
)
422 * The old automatic fan speed control interface is implemented
423 * by IT8705F chips up to revision F and IT8712F chips up to
426 return (data
->type
== it87
&& data
->revision
< 0x03)
427 || (data
->type
== it8712
&& data
->revision
< 0x08);
430 static int it87_probe(struct platform_device
*pdev
);
431 static int __devexit
it87_remove(struct platform_device
*pdev
);
433 static int it87_read_value(struct it87_data
*data
, u8 reg
);
434 static void it87_write_value(struct it87_data
*data
, u8 reg
, u8 value
);
435 static struct it87_data
*it87_update_device(struct device
*dev
);
436 static int it87_check_pwm(struct device
*dev
);
437 static void it87_init_device(struct platform_device
*pdev
);
440 static struct platform_driver it87_driver
= {
442 .owner
= THIS_MODULE
,
446 .remove
= __devexit_p(it87_remove
),
449 static ssize_t
show_in(struct device
*dev
, struct device_attribute
*attr
,
452 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
453 int nr
= sensor_attr
->index
;
455 struct it87_data
*data
= it87_update_device(dev
);
456 return sprintf(buf
, "%d\n", in_from_reg(data
, nr
, data
->in
[nr
]));
459 static ssize_t
show_in_min(struct device
*dev
, struct device_attribute
*attr
,
462 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
463 int nr
= sensor_attr
->index
;
465 struct it87_data
*data
= it87_update_device(dev
);
466 return sprintf(buf
, "%d\n", in_from_reg(data
, nr
, data
->in_min
[nr
]));
469 static ssize_t
show_in_max(struct device
*dev
, struct device_attribute
*attr
,
472 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
473 int nr
= sensor_attr
->index
;
475 struct it87_data
*data
= it87_update_device(dev
);
476 return sprintf(buf
, "%d\n", in_from_reg(data
, nr
, data
->in_max
[nr
]));
479 static ssize_t
set_in_min(struct device
*dev
, struct device_attribute
*attr
,
480 const char *buf
, size_t count
)
482 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
483 int nr
= sensor_attr
->index
;
485 struct it87_data
*data
= dev_get_drvdata(dev
);
488 if (kstrtoul(buf
, 10, &val
) < 0)
491 mutex_lock(&data
->update_lock
);
492 data
->in_min
[nr
] = in_to_reg(data
, nr
, val
);
493 it87_write_value(data
, IT87_REG_VIN_MIN(nr
),
495 mutex_unlock(&data
->update_lock
);
498 static ssize_t
set_in_max(struct device
*dev
, struct device_attribute
*attr
,
499 const char *buf
, size_t count
)
501 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
502 int nr
= sensor_attr
->index
;
504 struct it87_data
*data
= dev_get_drvdata(dev
);
507 if (kstrtoul(buf
, 10, &val
) < 0)
510 mutex_lock(&data
->update_lock
);
511 data
->in_max
[nr
] = in_to_reg(data
, nr
, val
);
512 it87_write_value(data
, IT87_REG_VIN_MAX(nr
),
514 mutex_unlock(&data
->update_lock
);
518 #define show_in_offset(offset) \
519 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
520 show_in, NULL, offset);
522 #define limit_in_offset(offset) \
523 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
524 show_in_min, set_in_min, offset); \
525 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
526 show_in_max, set_in_max, offset);
547 static ssize_t
show_temp(struct device
*dev
, struct device_attribute
*attr
,
550 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
551 int nr
= sensor_attr
->index
;
553 struct it87_data
*data
= it87_update_device(dev
);
554 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp
[nr
]));
556 static ssize_t
show_temp_max(struct device
*dev
, struct device_attribute
*attr
,
559 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
560 int nr
= sensor_attr
->index
;
562 struct it87_data
*data
= it87_update_device(dev
);
563 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_high
[nr
]));
565 static ssize_t
show_temp_min(struct device
*dev
, struct device_attribute
*attr
,
568 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
569 int nr
= sensor_attr
->index
;
571 struct it87_data
*data
= it87_update_device(dev
);
572 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_low
[nr
]));
574 static ssize_t
set_temp_max(struct device
*dev
, struct device_attribute
*attr
,
575 const char *buf
, size_t count
)
577 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
578 int nr
= sensor_attr
->index
;
580 struct it87_data
*data
= dev_get_drvdata(dev
);
583 if (kstrtol(buf
, 10, &val
) < 0)
586 mutex_lock(&data
->update_lock
);
587 data
->temp_high
[nr
] = TEMP_TO_REG(val
);
588 it87_write_value(data
, IT87_REG_TEMP_HIGH(nr
), data
->temp_high
[nr
]);
589 mutex_unlock(&data
->update_lock
);
592 static ssize_t
set_temp_min(struct device
*dev
, struct device_attribute
*attr
,
593 const char *buf
, size_t count
)
595 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
596 int nr
= sensor_attr
->index
;
598 struct it87_data
*data
= dev_get_drvdata(dev
);
601 if (kstrtol(buf
, 10, &val
) < 0)
604 mutex_lock(&data
->update_lock
);
605 data
->temp_low
[nr
] = TEMP_TO_REG(val
);
606 it87_write_value(data
, IT87_REG_TEMP_LOW(nr
), data
->temp_low
[nr
]);
607 mutex_unlock(&data
->update_lock
);
610 #define show_temp_offset(offset) \
611 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
612 show_temp, NULL, offset - 1); \
613 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
614 show_temp_max, set_temp_max, offset - 1); \
615 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
616 show_temp_min, set_temp_min, offset - 1);
622 static ssize_t
show_sensor(struct device
*dev
, struct device_attribute
*attr
,
625 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
626 int nr
= sensor_attr
->index
;
627 struct it87_data
*data
= it87_update_device(dev
);
628 u8 reg
= data
->sensor
; /* In case value is updated while used */
631 return sprintf(buf
, "3\n"); /* thermal diode */
633 return sprintf(buf
, "4\n"); /* thermistor */
634 return sprintf(buf
, "0\n"); /* disabled */
636 static ssize_t
set_sensor(struct device
*dev
, struct device_attribute
*attr
,
637 const char *buf
, size_t count
)
639 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
640 int nr
= sensor_attr
->index
;
642 struct it87_data
*data
= dev_get_drvdata(dev
);
646 if (kstrtol(buf
, 10, &val
) < 0)
649 reg
= it87_read_value(data
, IT87_REG_TEMP_ENABLE
);
652 if (val
== 2) { /* backwards compatibility */
653 dev_warn(dev
, "Sensor type 2 is deprecated, please use 4 "
657 /* 3 = thermal diode; 4 = thermistor; 0 = disabled */
665 mutex_lock(&data
->update_lock
);
667 it87_write_value(data
, IT87_REG_TEMP_ENABLE
, data
->sensor
);
668 data
->valid
= 0; /* Force cache refresh */
669 mutex_unlock(&data
->update_lock
);
672 #define show_sensor_offset(offset) \
673 static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
674 show_sensor, set_sensor, offset - 1);
676 show_sensor_offset(1);
677 show_sensor_offset(2);
678 show_sensor_offset(3);
682 static int pwm_mode(const struct it87_data
*data
, int nr
)
684 int ctrl
= data
->fan_main_ctrl
& (1 << nr
);
686 if (ctrl
== 0) /* Full speed */
688 if (data
->pwm_ctrl
[nr
] & 0x80) /* Automatic mode */
690 else /* Manual mode */
694 static ssize_t
show_fan(struct device
*dev
, struct device_attribute
*attr
,
697 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
698 int nr
= sensor_attr
->index
;
700 struct it87_data
*data
= it87_update_device(dev
);
701 return sprintf(buf
, "%d\n", FAN_FROM_REG(data
->fan
[nr
],
702 DIV_FROM_REG(data
->fan_div
[nr
])));
704 static ssize_t
show_fan_min(struct device
*dev
, struct device_attribute
*attr
,
707 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
708 int nr
= sensor_attr
->index
;
710 struct it87_data
*data
= it87_update_device(dev
);
711 return sprintf(buf
, "%d\n", FAN_FROM_REG(data
->fan_min
[nr
],
712 DIV_FROM_REG(data
->fan_div
[nr
])));
714 static ssize_t
show_fan_div(struct device
*dev
, struct device_attribute
*attr
,
717 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
718 int nr
= sensor_attr
->index
;
720 struct it87_data
*data
= it87_update_device(dev
);
721 return sprintf(buf
, "%d\n", DIV_FROM_REG(data
->fan_div
[nr
]));
723 static ssize_t
show_pwm_enable(struct device
*dev
,
724 struct device_attribute
*attr
, char *buf
)
726 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
727 int nr
= sensor_attr
->index
;
729 struct it87_data
*data
= it87_update_device(dev
);
730 return sprintf(buf
, "%d\n", pwm_mode(data
, nr
));
732 static ssize_t
show_pwm(struct device
*dev
, struct device_attribute
*attr
,
735 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
736 int nr
= sensor_attr
->index
;
738 struct it87_data
*data
= it87_update_device(dev
);
739 return sprintf(buf
, "%d\n",
740 pwm_from_reg(data
, data
->pwm_duty
[nr
]));
742 static ssize_t
show_pwm_freq(struct device
*dev
, struct device_attribute
*attr
,
745 struct it87_data
*data
= it87_update_device(dev
);
746 int index
= (data
->fan_ctl
>> 4) & 0x07;
748 return sprintf(buf
, "%u\n", pwm_freq
[index
]);
750 static ssize_t
set_fan_min(struct device
*dev
, struct device_attribute
*attr
,
751 const char *buf
, size_t count
)
753 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
754 int nr
= sensor_attr
->index
;
756 struct it87_data
*data
= dev_get_drvdata(dev
);
760 if (kstrtol(buf
, 10, &val
) < 0)
763 mutex_lock(&data
->update_lock
);
764 reg
= it87_read_value(data
, IT87_REG_FAN_DIV
);
767 data
->fan_div
[nr
] = reg
& 0x07;
770 data
->fan_div
[nr
] = (reg
>> 3) & 0x07;
773 data
->fan_div
[nr
] = (reg
& 0x40) ? 3 : 1;
777 data
->fan_min
[nr
] = FAN_TO_REG(val
, DIV_FROM_REG(data
->fan_div
[nr
]));
778 it87_write_value(data
, IT87_REG_FAN_MIN
[nr
], data
->fan_min
[nr
]);
779 mutex_unlock(&data
->update_lock
);
782 static ssize_t
set_fan_div(struct device
*dev
, struct device_attribute
*attr
,
783 const char *buf
, size_t count
)
785 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
786 int nr
= sensor_attr
->index
;
788 struct it87_data
*data
= dev_get_drvdata(dev
);
793 if (kstrtoul(buf
, 10, &val
) < 0)
796 mutex_lock(&data
->update_lock
);
797 old
= it87_read_value(data
, IT87_REG_FAN_DIV
);
799 /* Save fan min limit */
800 min
= FAN_FROM_REG(data
->fan_min
[nr
], DIV_FROM_REG(data
->fan_div
[nr
]));
805 data
->fan_div
[nr
] = DIV_TO_REG(val
);
809 data
->fan_div
[nr
] = 1;
811 data
->fan_div
[nr
] = 3;
814 val
|= (data
->fan_div
[0] & 0x07);
815 val
|= (data
->fan_div
[1] & 0x07) << 3;
816 if (data
->fan_div
[2] == 3)
818 it87_write_value(data
, IT87_REG_FAN_DIV
, val
);
820 /* Restore fan min limit */
821 data
->fan_min
[nr
] = FAN_TO_REG(min
, DIV_FROM_REG(data
->fan_div
[nr
]));
822 it87_write_value(data
, IT87_REG_FAN_MIN
[nr
], data
->fan_min
[nr
]);
824 mutex_unlock(&data
->update_lock
);
828 /* Returns 0 if OK, -EINVAL otherwise */
829 static int check_trip_points(struct device
*dev
, int nr
)
831 const struct it87_data
*data
= dev_get_drvdata(dev
);
834 if (has_old_autopwm(data
)) {
835 for (i
= 0; i
< 3; i
++) {
836 if (data
->auto_temp
[nr
][i
] > data
->auto_temp
[nr
][i
+ 1])
839 for (i
= 0; i
< 2; i
++) {
840 if (data
->auto_pwm
[nr
][i
] > data
->auto_pwm
[nr
][i
+ 1])
846 dev_err(dev
, "Inconsistent trip points, not switching to "
848 dev_err(dev
, "Adjust the trip points and try again\n");
853 static ssize_t
set_pwm_enable(struct device
*dev
,
854 struct device_attribute
*attr
, const char *buf
, size_t count
)
856 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
857 int nr
= sensor_attr
->index
;
859 struct it87_data
*data
= dev_get_drvdata(dev
);
862 if (kstrtol(buf
, 10, &val
) < 0 || val
< 0 || val
> 2)
865 /* Check trip points before switching to automatic mode */
867 if (check_trip_points(dev
, nr
) < 0)
871 mutex_lock(&data
->update_lock
);
875 /* make sure the fan is on when in on/off mode */
876 tmp
= it87_read_value(data
, IT87_REG_FAN_CTL
);
877 it87_write_value(data
, IT87_REG_FAN_CTL
, tmp
| (1 << nr
));
878 /* set on/off mode */
879 data
->fan_main_ctrl
&= ~(1 << nr
);
880 it87_write_value(data
, IT87_REG_FAN_MAIN_CTRL
,
881 data
->fan_main_ctrl
);
883 if (val
== 1) /* Manual mode */
884 data
->pwm_ctrl
[nr
] = has_newer_autopwm(data
) ?
885 data
->pwm_temp_map
[nr
] :
887 else /* Automatic mode */
888 data
->pwm_ctrl
[nr
] = 0x80 | data
->pwm_temp_map
[nr
];
889 it87_write_value(data
, IT87_REG_PWM(nr
), data
->pwm_ctrl
[nr
]);
890 /* set SmartGuardian mode */
891 data
->fan_main_ctrl
|= (1 << nr
);
892 it87_write_value(data
, IT87_REG_FAN_MAIN_CTRL
,
893 data
->fan_main_ctrl
);
896 mutex_unlock(&data
->update_lock
);
899 static ssize_t
set_pwm(struct device
*dev
, struct device_attribute
*attr
,
900 const char *buf
, size_t count
)
902 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
903 int nr
= sensor_attr
->index
;
905 struct it87_data
*data
= dev_get_drvdata(dev
);
908 if (kstrtol(buf
, 10, &val
) < 0 || val
< 0 || val
> 255)
911 mutex_lock(&data
->update_lock
);
912 if (has_newer_autopwm(data
)) {
914 * If we are in automatic mode, the PWM duty cycle register
915 * is read-only so we can't write the value.
917 if (data
->pwm_ctrl
[nr
] & 0x80) {
918 mutex_unlock(&data
->update_lock
);
921 data
->pwm_duty
[nr
] = pwm_to_reg(data
, val
);
922 it87_write_value(data
, IT87_REG_PWM_DUTY(nr
),
925 data
->pwm_duty
[nr
] = pwm_to_reg(data
, val
);
927 * If we are in manual mode, write the duty cycle immediately;
928 * otherwise, just store it for later use.
930 if (!(data
->pwm_ctrl
[nr
] & 0x80)) {
931 data
->pwm_ctrl
[nr
] = data
->pwm_duty
[nr
];
932 it87_write_value(data
, IT87_REG_PWM(nr
),
936 mutex_unlock(&data
->update_lock
);
939 static ssize_t
set_pwm_freq(struct device
*dev
,
940 struct device_attribute
*attr
, const char *buf
, size_t count
)
942 struct it87_data
*data
= dev_get_drvdata(dev
);
946 if (kstrtoul(buf
, 10, &val
) < 0)
949 /* Search for the nearest available frequency */
950 for (i
= 0; i
< 7; i
++) {
951 if (val
> (pwm_freq
[i
] + pwm_freq
[i
+1]) / 2)
955 mutex_lock(&data
->update_lock
);
956 data
->fan_ctl
= it87_read_value(data
, IT87_REG_FAN_CTL
) & 0x8f;
957 data
->fan_ctl
|= i
<< 4;
958 it87_write_value(data
, IT87_REG_FAN_CTL
, data
->fan_ctl
);
959 mutex_unlock(&data
->update_lock
);
963 static ssize_t
show_pwm_temp_map(struct device
*dev
,
964 struct device_attribute
*attr
, char *buf
)
966 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
967 int nr
= sensor_attr
->index
;
969 struct it87_data
*data
= it87_update_device(dev
);
972 if (data
->pwm_temp_map
[nr
] < 3)
973 map
= 1 << data
->pwm_temp_map
[nr
];
975 map
= 0; /* Should never happen */
976 return sprintf(buf
, "%d\n", map
);
978 static ssize_t
set_pwm_temp_map(struct device
*dev
,
979 struct device_attribute
*attr
, const char *buf
, size_t count
)
981 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
982 int nr
= sensor_attr
->index
;
984 struct it87_data
*data
= dev_get_drvdata(dev
);
989 * This check can go away if we ever support automatic fan speed
990 * control on newer chips.
992 if (!has_old_autopwm(data
)) {
993 dev_notice(dev
, "Mapping change disabled for safety reasons\n");
997 if (kstrtol(buf
, 10, &val
) < 0)
1014 mutex_lock(&data
->update_lock
);
1015 data
->pwm_temp_map
[nr
] = reg
;
1017 * If we are in automatic mode, write the temp mapping immediately;
1018 * otherwise, just store it for later use.
1020 if (data
->pwm_ctrl
[nr
] & 0x80) {
1021 data
->pwm_ctrl
[nr
] = 0x80 | data
->pwm_temp_map
[nr
];
1022 it87_write_value(data
, IT87_REG_PWM(nr
), data
->pwm_ctrl
[nr
]);
1024 mutex_unlock(&data
->update_lock
);
1028 static ssize_t
show_auto_pwm(struct device
*dev
,
1029 struct device_attribute
*attr
, char *buf
)
1031 struct it87_data
*data
= it87_update_device(dev
);
1032 struct sensor_device_attribute_2
*sensor_attr
=
1033 to_sensor_dev_attr_2(attr
);
1034 int nr
= sensor_attr
->nr
;
1035 int point
= sensor_attr
->index
;
1037 return sprintf(buf
, "%d\n",
1038 pwm_from_reg(data
, data
->auto_pwm
[nr
][point
]));
1041 static ssize_t
set_auto_pwm(struct device
*dev
,
1042 struct device_attribute
*attr
, const char *buf
, size_t count
)
1044 struct it87_data
*data
= dev_get_drvdata(dev
);
1045 struct sensor_device_attribute_2
*sensor_attr
=
1046 to_sensor_dev_attr_2(attr
);
1047 int nr
= sensor_attr
->nr
;
1048 int point
= sensor_attr
->index
;
1051 if (kstrtol(buf
, 10, &val
) < 0 || val
< 0 || val
> 255)
1054 mutex_lock(&data
->update_lock
);
1055 data
->auto_pwm
[nr
][point
] = pwm_to_reg(data
, val
);
1056 it87_write_value(data
, IT87_REG_AUTO_PWM(nr
, point
),
1057 data
->auto_pwm
[nr
][point
]);
1058 mutex_unlock(&data
->update_lock
);
1062 static ssize_t
show_auto_temp(struct device
*dev
,
1063 struct device_attribute
*attr
, char *buf
)
1065 struct it87_data
*data
= it87_update_device(dev
);
1066 struct sensor_device_attribute_2
*sensor_attr
=
1067 to_sensor_dev_attr_2(attr
);
1068 int nr
= sensor_attr
->nr
;
1069 int point
= sensor_attr
->index
;
1071 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->auto_temp
[nr
][point
]));
1074 static ssize_t
set_auto_temp(struct device
*dev
,
1075 struct device_attribute
*attr
, const char *buf
, size_t count
)
1077 struct it87_data
*data
= dev_get_drvdata(dev
);
1078 struct sensor_device_attribute_2
*sensor_attr
=
1079 to_sensor_dev_attr_2(attr
);
1080 int nr
= sensor_attr
->nr
;
1081 int point
= sensor_attr
->index
;
1084 if (kstrtol(buf
, 10, &val
) < 0 || val
< -128000 || val
> 127000)
1087 mutex_lock(&data
->update_lock
);
1088 data
->auto_temp
[nr
][point
] = TEMP_TO_REG(val
);
1089 it87_write_value(data
, IT87_REG_AUTO_TEMP(nr
, point
),
1090 data
->auto_temp
[nr
][point
]);
1091 mutex_unlock(&data
->update_lock
);
1095 #define show_fan_offset(offset) \
1096 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
1097 show_fan, NULL, offset - 1); \
1098 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
1099 show_fan_min, set_fan_min, offset - 1); \
1100 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
1101 show_fan_div, set_fan_div, offset - 1);
1107 #define show_pwm_offset(offset) \
1108 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
1109 show_pwm_enable, set_pwm_enable, offset - 1); \
1110 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
1111 show_pwm, set_pwm, offset - 1); \
1112 static DEVICE_ATTR(pwm##offset##_freq, \
1113 (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \
1114 show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); \
1115 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels_temp, \
1116 S_IRUGO | S_IWUSR, show_pwm_temp_map, set_pwm_temp_map, \
1118 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_pwm, \
1119 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1121 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_pwm, \
1122 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1124 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_pwm, \
1125 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1127 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_pwm, \
1128 S_IRUGO, show_auto_pwm, NULL, offset - 1, 3); \
1129 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp, \
1130 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1132 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp_hyst, \
1133 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1135 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_temp, \
1136 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1138 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_temp, \
1139 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1141 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_temp, \
1142 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1149 /* A different set of callbacks for 16-bit fans */
1150 static ssize_t
show_fan16(struct device
*dev
, struct device_attribute
*attr
,
1153 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
1154 int nr
= sensor_attr
->index
;
1155 struct it87_data
*data
= it87_update_device(dev
);
1156 return sprintf(buf
, "%d\n", FAN16_FROM_REG(data
->fan
[nr
]));
1159 static ssize_t
show_fan16_min(struct device
*dev
, struct device_attribute
*attr
,
1162 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
1163 int nr
= sensor_attr
->index
;
1164 struct it87_data
*data
= it87_update_device(dev
);
1165 return sprintf(buf
, "%d\n", FAN16_FROM_REG(data
->fan_min
[nr
]));
1168 static ssize_t
set_fan16_min(struct device
*dev
, struct device_attribute
*attr
,
1169 const char *buf
, size_t count
)
1171 struct sensor_device_attribute
*sensor_attr
= to_sensor_dev_attr(attr
);
1172 int nr
= sensor_attr
->index
;
1173 struct it87_data
*data
= dev_get_drvdata(dev
);
1176 if (kstrtol(buf
, 10, &val
) < 0)
1179 mutex_lock(&data
->update_lock
);
1180 data
->fan_min
[nr
] = FAN16_TO_REG(val
);
1181 it87_write_value(data
, IT87_REG_FAN_MIN
[nr
],
1182 data
->fan_min
[nr
] & 0xff);
1183 it87_write_value(data
, IT87_REG_FANX_MIN
[nr
],
1184 data
->fan_min
[nr
] >> 8);
1185 mutex_unlock(&data
->update_lock
);
1190 * We want to use the same sysfs file names as 8-bit fans, but we need
1191 * different variable names, so we have to use SENSOR_ATTR instead of
1192 * SENSOR_DEVICE_ATTR.
1194 #define show_fan16_offset(offset) \
1195 static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \
1196 = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \
1197 show_fan16, NULL, offset - 1); \
1198 static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \
1199 = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
1200 show_fan16_min, set_fan16_min, offset - 1)
1202 show_fan16_offset(1);
1203 show_fan16_offset(2);
1204 show_fan16_offset(3);
1205 show_fan16_offset(4);
1206 show_fan16_offset(5);
1209 static ssize_t
show_alarms(struct device
*dev
, struct device_attribute
*attr
,
1212 struct it87_data
*data
= it87_update_device(dev
);
1213 return sprintf(buf
, "%u\n", data
->alarms
);
1215 static DEVICE_ATTR(alarms
, S_IRUGO
, show_alarms
, NULL
);
1217 static ssize_t
show_alarm(struct device
*dev
, struct device_attribute
*attr
,
1220 int bitnr
= to_sensor_dev_attr(attr
)->index
;
1221 struct it87_data
*data
= it87_update_device(dev
);
1222 return sprintf(buf
, "%u\n", (data
->alarms
>> bitnr
) & 1);
1225 static ssize_t
clear_intrusion(struct device
*dev
, struct device_attribute
1226 *attr
, const char *buf
, size_t count
)
1228 struct it87_data
*data
= dev_get_drvdata(dev
);
1232 if (kstrtol(buf
, 10, &val
) < 0 || val
!= 0)
1235 mutex_lock(&data
->update_lock
);
1236 config
= it87_read_value(data
, IT87_REG_CONFIG
);
1241 it87_write_value(data
, IT87_REG_CONFIG
, config
);
1242 /* Invalidate cache to force re-read */
1245 mutex_unlock(&data
->update_lock
);
1250 static SENSOR_DEVICE_ATTR(in0_alarm
, S_IRUGO
, show_alarm
, NULL
, 8);
1251 static SENSOR_DEVICE_ATTR(in1_alarm
, S_IRUGO
, show_alarm
, NULL
, 9);
1252 static SENSOR_DEVICE_ATTR(in2_alarm
, S_IRUGO
, show_alarm
, NULL
, 10);
1253 static SENSOR_DEVICE_ATTR(in3_alarm
, S_IRUGO
, show_alarm
, NULL
, 11);
1254 static SENSOR_DEVICE_ATTR(in4_alarm
, S_IRUGO
, show_alarm
, NULL
, 12);
1255 static SENSOR_DEVICE_ATTR(in5_alarm
, S_IRUGO
, show_alarm
, NULL
, 13);
1256 static SENSOR_DEVICE_ATTR(in6_alarm
, S_IRUGO
, show_alarm
, NULL
, 14);
1257 static SENSOR_DEVICE_ATTR(in7_alarm
, S_IRUGO
, show_alarm
, NULL
, 15);
1258 static SENSOR_DEVICE_ATTR(fan1_alarm
, S_IRUGO
, show_alarm
, NULL
, 0);
1259 static SENSOR_DEVICE_ATTR(fan2_alarm
, S_IRUGO
, show_alarm
, NULL
, 1);
1260 static SENSOR_DEVICE_ATTR(fan3_alarm
, S_IRUGO
, show_alarm
, NULL
, 2);
1261 static SENSOR_DEVICE_ATTR(fan4_alarm
, S_IRUGO
, show_alarm
, NULL
, 3);
1262 static SENSOR_DEVICE_ATTR(fan5_alarm
, S_IRUGO
, show_alarm
, NULL
, 6);
1263 static SENSOR_DEVICE_ATTR(temp1_alarm
, S_IRUGO
, show_alarm
, NULL
, 16);
1264 static SENSOR_DEVICE_ATTR(temp2_alarm
, S_IRUGO
, show_alarm
, NULL
, 17);
1265 static SENSOR_DEVICE_ATTR(temp3_alarm
, S_IRUGO
, show_alarm
, NULL
, 18);
1266 static SENSOR_DEVICE_ATTR(intrusion0_alarm
, S_IRUGO
| S_IWUSR
,
1267 show_alarm
, clear_intrusion
, 4);
1269 static ssize_t
show_beep(struct device
*dev
, struct device_attribute
*attr
,
1272 int bitnr
= to_sensor_dev_attr(attr
)->index
;
1273 struct it87_data
*data
= it87_update_device(dev
);
1274 return sprintf(buf
, "%u\n", (data
->beeps
>> bitnr
) & 1);
1276 static ssize_t
set_beep(struct device
*dev
, struct device_attribute
*attr
,
1277 const char *buf
, size_t count
)
1279 int bitnr
= to_sensor_dev_attr(attr
)->index
;
1280 struct it87_data
*data
= dev_get_drvdata(dev
);
1283 if (kstrtol(buf
, 10, &val
) < 0
1284 || (val
!= 0 && val
!= 1))
1287 mutex_lock(&data
->update_lock
);
1288 data
->beeps
= it87_read_value(data
, IT87_REG_BEEP_ENABLE
);
1290 data
->beeps
|= (1 << bitnr
);
1292 data
->beeps
&= ~(1 << bitnr
);
1293 it87_write_value(data
, IT87_REG_BEEP_ENABLE
, data
->beeps
);
1294 mutex_unlock(&data
->update_lock
);
1298 static SENSOR_DEVICE_ATTR(in0_beep
, S_IRUGO
| S_IWUSR
,
1299 show_beep
, set_beep
, 1);
1300 static SENSOR_DEVICE_ATTR(in1_beep
, S_IRUGO
, show_beep
, NULL
, 1);
1301 static SENSOR_DEVICE_ATTR(in2_beep
, S_IRUGO
, show_beep
, NULL
, 1);
1302 static SENSOR_DEVICE_ATTR(in3_beep
, S_IRUGO
, show_beep
, NULL
, 1);
1303 static SENSOR_DEVICE_ATTR(in4_beep
, S_IRUGO
, show_beep
, NULL
, 1);
1304 static SENSOR_DEVICE_ATTR(in5_beep
, S_IRUGO
, show_beep
, NULL
, 1);
1305 static SENSOR_DEVICE_ATTR(in6_beep
, S_IRUGO
, show_beep
, NULL
, 1);
1306 static SENSOR_DEVICE_ATTR(in7_beep
, S_IRUGO
, show_beep
, NULL
, 1);
1307 /* fanX_beep writability is set later */
1308 static SENSOR_DEVICE_ATTR(fan1_beep
, S_IRUGO
, show_beep
, set_beep
, 0);
1309 static SENSOR_DEVICE_ATTR(fan2_beep
, S_IRUGO
, show_beep
, set_beep
, 0);
1310 static SENSOR_DEVICE_ATTR(fan3_beep
, S_IRUGO
, show_beep
, set_beep
, 0);
1311 static SENSOR_DEVICE_ATTR(fan4_beep
, S_IRUGO
, show_beep
, set_beep
, 0);
1312 static SENSOR_DEVICE_ATTR(fan5_beep
, S_IRUGO
, show_beep
, set_beep
, 0);
1313 static SENSOR_DEVICE_ATTR(temp1_beep
, S_IRUGO
| S_IWUSR
,
1314 show_beep
, set_beep
, 2);
1315 static SENSOR_DEVICE_ATTR(temp2_beep
, S_IRUGO
, show_beep
, NULL
, 2);
1316 static SENSOR_DEVICE_ATTR(temp3_beep
, S_IRUGO
, show_beep
, NULL
, 2);
1318 static ssize_t
show_vrm_reg(struct device
*dev
, struct device_attribute
*attr
,
1321 struct it87_data
*data
= dev_get_drvdata(dev
);
1322 return sprintf(buf
, "%u\n", data
->vrm
);
1324 static ssize_t
store_vrm_reg(struct device
*dev
, struct device_attribute
*attr
,
1325 const char *buf
, size_t count
)
1327 struct it87_data
*data
= dev_get_drvdata(dev
);
1330 if (kstrtoul(buf
, 10, &val
) < 0)
1337 static DEVICE_ATTR(vrm
, S_IRUGO
| S_IWUSR
, show_vrm_reg
, store_vrm_reg
);
1339 static ssize_t
show_vid_reg(struct device
*dev
, struct device_attribute
*attr
,
1342 struct it87_data
*data
= it87_update_device(dev
);
1343 return sprintf(buf
, "%ld\n", (long) vid_from_reg(data
->vid
, data
->vrm
));
1345 static DEVICE_ATTR(cpu0_vid
, S_IRUGO
, show_vid_reg
, NULL
);
1347 static ssize_t
show_label(struct device
*dev
, struct device_attribute
*attr
,
1350 static const char * const labels
[] = {
1355 static const char * const labels_it8721
[] = {
1360 struct it87_data
*data
= dev_get_drvdata(dev
);
1361 int nr
= to_sensor_dev_attr(attr
)->index
;
1363 return sprintf(buf
, "%s\n", has_12mv_adc(data
) ? labels_it8721
[nr
]
1366 static SENSOR_DEVICE_ATTR(in3_label
, S_IRUGO
, show_label
, NULL
, 0);
1367 static SENSOR_DEVICE_ATTR(in7_label
, S_IRUGO
, show_label
, NULL
, 1);
1368 static SENSOR_DEVICE_ATTR(in8_label
, S_IRUGO
, show_label
, NULL
, 2);
1370 static ssize_t
show_name(struct device
*dev
, struct device_attribute
1371 *devattr
, char *buf
)
1373 struct it87_data
*data
= dev_get_drvdata(dev
);
1374 return sprintf(buf
, "%s\n", data
->name
);
1376 static DEVICE_ATTR(name
, S_IRUGO
, show_name
, NULL
);
1378 static struct attribute
*it87_attributes_in
[9][5] = {
1380 &sensor_dev_attr_in0_input
.dev_attr
.attr
,
1381 &sensor_dev_attr_in0_min
.dev_attr
.attr
,
1382 &sensor_dev_attr_in0_max
.dev_attr
.attr
,
1383 &sensor_dev_attr_in0_alarm
.dev_attr
.attr
,
1386 &sensor_dev_attr_in1_input
.dev_attr
.attr
,
1387 &sensor_dev_attr_in1_min
.dev_attr
.attr
,
1388 &sensor_dev_attr_in1_max
.dev_attr
.attr
,
1389 &sensor_dev_attr_in1_alarm
.dev_attr
.attr
,
1392 &sensor_dev_attr_in2_input
.dev_attr
.attr
,
1393 &sensor_dev_attr_in2_min
.dev_attr
.attr
,
1394 &sensor_dev_attr_in2_max
.dev_attr
.attr
,
1395 &sensor_dev_attr_in2_alarm
.dev_attr
.attr
,
1398 &sensor_dev_attr_in3_input
.dev_attr
.attr
,
1399 &sensor_dev_attr_in3_min
.dev_attr
.attr
,
1400 &sensor_dev_attr_in3_max
.dev_attr
.attr
,
1401 &sensor_dev_attr_in3_alarm
.dev_attr
.attr
,
1404 &sensor_dev_attr_in4_input
.dev_attr
.attr
,
1405 &sensor_dev_attr_in4_min
.dev_attr
.attr
,
1406 &sensor_dev_attr_in4_max
.dev_attr
.attr
,
1407 &sensor_dev_attr_in4_alarm
.dev_attr
.attr
,
1410 &sensor_dev_attr_in5_input
.dev_attr
.attr
,
1411 &sensor_dev_attr_in5_min
.dev_attr
.attr
,
1412 &sensor_dev_attr_in5_max
.dev_attr
.attr
,
1413 &sensor_dev_attr_in5_alarm
.dev_attr
.attr
,
1416 &sensor_dev_attr_in6_input
.dev_attr
.attr
,
1417 &sensor_dev_attr_in6_min
.dev_attr
.attr
,
1418 &sensor_dev_attr_in6_max
.dev_attr
.attr
,
1419 &sensor_dev_attr_in6_alarm
.dev_attr
.attr
,
1422 &sensor_dev_attr_in7_input
.dev_attr
.attr
,
1423 &sensor_dev_attr_in7_min
.dev_attr
.attr
,
1424 &sensor_dev_attr_in7_max
.dev_attr
.attr
,
1425 &sensor_dev_attr_in7_alarm
.dev_attr
.attr
,
1428 &sensor_dev_attr_in8_input
.dev_attr
.attr
,
1432 static const struct attribute_group it87_group_in
[9] = {
1433 { .attrs
= it87_attributes_in
[0] },
1434 { .attrs
= it87_attributes_in
[1] },
1435 { .attrs
= it87_attributes_in
[2] },
1436 { .attrs
= it87_attributes_in
[3] },
1437 { .attrs
= it87_attributes_in
[4] },
1438 { .attrs
= it87_attributes_in
[5] },
1439 { .attrs
= it87_attributes_in
[6] },
1440 { .attrs
= it87_attributes_in
[7] },
1441 { .attrs
= it87_attributes_in
[8] },
1444 static struct attribute
*it87_attributes_temp
[3][6] = {
1446 &sensor_dev_attr_temp1_input
.dev_attr
.attr
,
1447 &sensor_dev_attr_temp1_max
.dev_attr
.attr
,
1448 &sensor_dev_attr_temp1_min
.dev_attr
.attr
,
1449 &sensor_dev_attr_temp1_type
.dev_attr
.attr
,
1450 &sensor_dev_attr_temp1_alarm
.dev_attr
.attr
,
1453 &sensor_dev_attr_temp2_input
.dev_attr
.attr
,
1454 &sensor_dev_attr_temp2_max
.dev_attr
.attr
,
1455 &sensor_dev_attr_temp2_min
.dev_attr
.attr
,
1456 &sensor_dev_attr_temp2_type
.dev_attr
.attr
,
1457 &sensor_dev_attr_temp2_alarm
.dev_attr
.attr
,
1460 &sensor_dev_attr_temp3_input
.dev_attr
.attr
,
1461 &sensor_dev_attr_temp3_max
.dev_attr
.attr
,
1462 &sensor_dev_attr_temp3_min
.dev_attr
.attr
,
1463 &sensor_dev_attr_temp3_type
.dev_attr
.attr
,
1464 &sensor_dev_attr_temp3_alarm
.dev_attr
.attr
,
1468 static const struct attribute_group it87_group_temp
[3] = {
1469 { .attrs
= it87_attributes_temp
[0] },
1470 { .attrs
= it87_attributes_temp
[1] },
1471 { .attrs
= it87_attributes_temp
[2] },
1474 static struct attribute
*it87_attributes
[] = {
1475 &dev_attr_alarms
.attr
,
1476 &sensor_dev_attr_intrusion0_alarm
.dev_attr
.attr
,
1477 &dev_attr_name
.attr
,
1481 static const struct attribute_group it87_group
= {
1482 .attrs
= it87_attributes
,
1485 static struct attribute
*it87_attributes_in_beep
[] = {
1486 &sensor_dev_attr_in0_beep
.dev_attr
.attr
,
1487 &sensor_dev_attr_in1_beep
.dev_attr
.attr
,
1488 &sensor_dev_attr_in2_beep
.dev_attr
.attr
,
1489 &sensor_dev_attr_in3_beep
.dev_attr
.attr
,
1490 &sensor_dev_attr_in4_beep
.dev_attr
.attr
,
1491 &sensor_dev_attr_in5_beep
.dev_attr
.attr
,
1492 &sensor_dev_attr_in6_beep
.dev_attr
.attr
,
1493 &sensor_dev_attr_in7_beep
.dev_attr
.attr
,
1497 static struct attribute
*it87_attributes_temp_beep
[] = {
1498 &sensor_dev_attr_temp1_beep
.dev_attr
.attr
,
1499 &sensor_dev_attr_temp2_beep
.dev_attr
.attr
,
1500 &sensor_dev_attr_temp3_beep
.dev_attr
.attr
,
1503 static struct attribute
*it87_attributes_fan16
[5][3+1] = { {
1504 &sensor_dev_attr_fan1_input16
.dev_attr
.attr
,
1505 &sensor_dev_attr_fan1_min16
.dev_attr
.attr
,
1506 &sensor_dev_attr_fan1_alarm
.dev_attr
.attr
,
1509 &sensor_dev_attr_fan2_input16
.dev_attr
.attr
,
1510 &sensor_dev_attr_fan2_min16
.dev_attr
.attr
,
1511 &sensor_dev_attr_fan2_alarm
.dev_attr
.attr
,
1514 &sensor_dev_attr_fan3_input16
.dev_attr
.attr
,
1515 &sensor_dev_attr_fan3_min16
.dev_attr
.attr
,
1516 &sensor_dev_attr_fan3_alarm
.dev_attr
.attr
,
1519 &sensor_dev_attr_fan4_input16
.dev_attr
.attr
,
1520 &sensor_dev_attr_fan4_min16
.dev_attr
.attr
,
1521 &sensor_dev_attr_fan4_alarm
.dev_attr
.attr
,
1524 &sensor_dev_attr_fan5_input16
.dev_attr
.attr
,
1525 &sensor_dev_attr_fan5_min16
.dev_attr
.attr
,
1526 &sensor_dev_attr_fan5_alarm
.dev_attr
.attr
,
1530 static const struct attribute_group it87_group_fan16
[5] = {
1531 { .attrs
= it87_attributes_fan16
[0] },
1532 { .attrs
= it87_attributes_fan16
[1] },
1533 { .attrs
= it87_attributes_fan16
[2] },
1534 { .attrs
= it87_attributes_fan16
[3] },
1535 { .attrs
= it87_attributes_fan16
[4] },
1538 static struct attribute
*it87_attributes_fan
[3][4+1] = { {
1539 &sensor_dev_attr_fan1_input
.dev_attr
.attr
,
1540 &sensor_dev_attr_fan1_min
.dev_attr
.attr
,
1541 &sensor_dev_attr_fan1_div
.dev_attr
.attr
,
1542 &sensor_dev_attr_fan1_alarm
.dev_attr
.attr
,
1545 &sensor_dev_attr_fan2_input
.dev_attr
.attr
,
1546 &sensor_dev_attr_fan2_min
.dev_attr
.attr
,
1547 &sensor_dev_attr_fan2_div
.dev_attr
.attr
,
1548 &sensor_dev_attr_fan2_alarm
.dev_attr
.attr
,
1551 &sensor_dev_attr_fan3_input
.dev_attr
.attr
,
1552 &sensor_dev_attr_fan3_min
.dev_attr
.attr
,
1553 &sensor_dev_attr_fan3_div
.dev_attr
.attr
,
1554 &sensor_dev_attr_fan3_alarm
.dev_attr
.attr
,
1558 static const struct attribute_group it87_group_fan
[3] = {
1559 { .attrs
= it87_attributes_fan
[0] },
1560 { .attrs
= it87_attributes_fan
[1] },
1561 { .attrs
= it87_attributes_fan
[2] },
1564 static const struct attribute_group
*
1565 it87_get_fan_group(const struct it87_data
*data
)
1567 return has_16bit_fans(data
) ? it87_group_fan16
: it87_group_fan
;
1570 static struct attribute
*it87_attributes_pwm
[3][4+1] = { {
1571 &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
,
1572 &sensor_dev_attr_pwm1
.dev_attr
.attr
,
1573 &dev_attr_pwm1_freq
.attr
,
1574 &sensor_dev_attr_pwm1_auto_channels_temp
.dev_attr
.attr
,
1577 &sensor_dev_attr_pwm2_enable
.dev_attr
.attr
,
1578 &sensor_dev_attr_pwm2
.dev_attr
.attr
,
1579 &dev_attr_pwm2_freq
.attr
,
1580 &sensor_dev_attr_pwm2_auto_channels_temp
.dev_attr
.attr
,
1583 &sensor_dev_attr_pwm3_enable
.dev_attr
.attr
,
1584 &sensor_dev_attr_pwm3
.dev_attr
.attr
,
1585 &dev_attr_pwm3_freq
.attr
,
1586 &sensor_dev_attr_pwm3_auto_channels_temp
.dev_attr
.attr
,
1590 static const struct attribute_group it87_group_pwm
[3] = {
1591 { .attrs
= it87_attributes_pwm
[0] },
1592 { .attrs
= it87_attributes_pwm
[1] },
1593 { .attrs
= it87_attributes_pwm
[2] },
1596 static struct attribute
*it87_attributes_autopwm
[3][9+1] = { {
1597 &sensor_dev_attr_pwm1_auto_point1_pwm
.dev_attr
.attr
,
1598 &sensor_dev_attr_pwm1_auto_point2_pwm
.dev_attr
.attr
,
1599 &sensor_dev_attr_pwm1_auto_point3_pwm
.dev_attr
.attr
,
1600 &sensor_dev_attr_pwm1_auto_point4_pwm
.dev_attr
.attr
,
1601 &sensor_dev_attr_pwm1_auto_point1_temp
.dev_attr
.attr
,
1602 &sensor_dev_attr_pwm1_auto_point1_temp_hyst
.dev_attr
.attr
,
1603 &sensor_dev_attr_pwm1_auto_point2_temp
.dev_attr
.attr
,
1604 &sensor_dev_attr_pwm1_auto_point3_temp
.dev_attr
.attr
,
1605 &sensor_dev_attr_pwm1_auto_point4_temp
.dev_attr
.attr
,
1608 &sensor_dev_attr_pwm2_auto_point1_pwm
.dev_attr
.attr
,
1609 &sensor_dev_attr_pwm2_auto_point2_pwm
.dev_attr
.attr
,
1610 &sensor_dev_attr_pwm2_auto_point3_pwm
.dev_attr
.attr
,
1611 &sensor_dev_attr_pwm2_auto_point4_pwm
.dev_attr
.attr
,
1612 &sensor_dev_attr_pwm2_auto_point1_temp
.dev_attr
.attr
,
1613 &sensor_dev_attr_pwm2_auto_point1_temp_hyst
.dev_attr
.attr
,
1614 &sensor_dev_attr_pwm2_auto_point2_temp
.dev_attr
.attr
,
1615 &sensor_dev_attr_pwm2_auto_point3_temp
.dev_attr
.attr
,
1616 &sensor_dev_attr_pwm2_auto_point4_temp
.dev_attr
.attr
,
1619 &sensor_dev_attr_pwm3_auto_point1_pwm
.dev_attr
.attr
,
1620 &sensor_dev_attr_pwm3_auto_point2_pwm
.dev_attr
.attr
,
1621 &sensor_dev_attr_pwm3_auto_point3_pwm
.dev_attr
.attr
,
1622 &sensor_dev_attr_pwm3_auto_point4_pwm
.dev_attr
.attr
,
1623 &sensor_dev_attr_pwm3_auto_point1_temp
.dev_attr
.attr
,
1624 &sensor_dev_attr_pwm3_auto_point1_temp_hyst
.dev_attr
.attr
,
1625 &sensor_dev_attr_pwm3_auto_point2_temp
.dev_attr
.attr
,
1626 &sensor_dev_attr_pwm3_auto_point3_temp
.dev_attr
.attr
,
1627 &sensor_dev_attr_pwm3_auto_point4_temp
.dev_attr
.attr
,
1631 static const struct attribute_group it87_group_autopwm
[3] = {
1632 { .attrs
= it87_attributes_autopwm
[0] },
1633 { .attrs
= it87_attributes_autopwm
[1] },
1634 { .attrs
= it87_attributes_autopwm
[2] },
1637 static struct attribute
*it87_attributes_fan_beep
[] = {
1638 &sensor_dev_attr_fan1_beep
.dev_attr
.attr
,
1639 &sensor_dev_attr_fan2_beep
.dev_attr
.attr
,
1640 &sensor_dev_attr_fan3_beep
.dev_attr
.attr
,
1641 &sensor_dev_attr_fan4_beep
.dev_attr
.attr
,
1642 &sensor_dev_attr_fan5_beep
.dev_attr
.attr
,
1645 static struct attribute
*it87_attributes_vid
[] = {
1647 &dev_attr_cpu0_vid
.attr
,
1651 static const struct attribute_group it87_group_vid
= {
1652 .attrs
= it87_attributes_vid
,
1655 static struct attribute
*it87_attributes_label
[] = {
1656 &sensor_dev_attr_in3_label
.dev_attr
.attr
,
1657 &sensor_dev_attr_in7_label
.dev_attr
.attr
,
1658 &sensor_dev_attr_in8_label
.dev_attr
.attr
,
1662 static const struct attribute_group it87_group_label
= {
1663 .attrs
= it87_attributes_label
,
1666 /* SuperIO detection - will change isa_address if a chip is found */
1667 static int __init
it87_find(unsigned short *address
,
1668 struct it87_sio_data
*sio_data
)
1672 const char *board_vendor
, *board_name
;
1674 err
= superio_enter();
1679 chip_type
= force_id
? force_id
: superio_inw(DEVID
);
1681 switch (chip_type
) {
1683 sio_data
->type
= it87
;
1686 sio_data
->type
= it8712
;
1690 sio_data
->type
= it8716
;
1693 sio_data
->type
= it8718
;
1696 sio_data
->type
= it8720
;
1699 sio_data
->type
= it8721
;
1702 sio_data
->type
= it8728
;
1705 sio_data
->type
= it8782
;
1708 sio_data
->type
= it8783
;
1710 case 0xffff: /* No device at all */
1713 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type
);
1717 superio_select(PME
);
1718 if (!(superio_inb(IT87_ACT_REG
) & 0x01)) {
1719 pr_info("Device not activated, skipping\n");
1723 *address
= superio_inw(IT87_BASE_REG
) & ~(IT87_EXTENT
- 1);
1724 if (*address
== 0) {
1725 pr_info("Base address not set, skipping\n");
1730 sio_data
->revision
= superio_inb(DEVREV
) & 0x0f;
1731 pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1732 chip_type
, *address
, sio_data
->revision
);
1734 /* in8 (Vbat) is always internal */
1735 sio_data
->internal
= (1 << 2);
1737 /* Read GPIO config and VID value from LDN 7 (GPIO) */
1738 if (sio_data
->type
== it87
) {
1739 /* The IT8705F doesn't have VID pins at all */
1740 sio_data
->skip_vid
= 1;
1742 /* The IT8705F has a different LD number for GPIO */
1744 sio_data
->beep_pin
= superio_inb(IT87_SIO_BEEP_PIN_REG
) & 0x3f;
1745 } else if (sio_data
->type
== it8783
) {
1746 int reg25
, reg27
, reg2A
, reg2C
, regEF
;
1748 sio_data
->skip_vid
= 1; /* No VID */
1750 superio_select(GPIO
);
1752 reg25
= superio_inb(IT87_SIO_GPIO1_REG
);
1753 reg27
= superio_inb(IT87_SIO_GPIO3_REG
);
1754 reg2A
= superio_inb(IT87_SIO_PINX1_REG
);
1755 reg2C
= superio_inb(IT87_SIO_PINX2_REG
);
1756 regEF
= superio_inb(IT87_SIO_SPI_REG
);
1758 /* Check if fan3 is there or not */
1759 if ((reg27
& (1 << 0)) || !(reg2C
& (1 << 2)))
1760 sio_data
->skip_fan
|= (1 << 2);
1761 if ((reg25
& (1 << 4))
1762 || (!(reg2A
& (1 << 1)) && (regEF
& (1 << 0))))
1763 sio_data
->skip_pwm
|= (1 << 2);
1765 /* Check if fan2 is there or not */
1766 if (reg27
& (1 << 7))
1767 sio_data
->skip_fan
|= (1 << 1);
1768 if (reg27
& (1 << 3))
1769 sio_data
->skip_pwm
|= (1 << 1);
1772 if ((reg27
& (1 << 0)) || (reg2C
& (1 << 2)))
1773 sio_data
->skip_in
|= (1 << 5); /* No VIN5 */
1776 if (reg27
& (1 << 1))
1777 sio_data
->skip_in
|= (1 << 6); /* No VIN6 */
1781 * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1783 if (reg27
& (1 << 2)) {
1785 * The data sheet is a bit unclear regarding the
1786 * internal voltage divider for VCCH5V. It says
1787 * "This bit enables and switches VIN7 (pin 91) to the
1788 * internal voltage divider for VCCH5V".
1789 * This is different to other chips, where the internal
1790 * voltage divider would connect VIN7 to an internal
1791 * voltage source. Maybe that is the case here as well.
1793 * Since we don't know for sure, re-route it if that is
1794 * not the case, and ask the user to report if the
1795 * resulting voltage is sane.
1797 if (!(reg2C
& (1 << 1))) {
1799 superio_outb(IT87_SIO_PINX2_REG
, reg2C
);
1800 pr_notice("Routing internal VCCH5V to in7.\n");
1802 pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1803 pr_notice("Please report if it displays a reasonable voltage.\n");
1806 if (reg2C
& (1 << 0))
1807 sio_data
->internal
|= (1 << 0);
1808 if (reg2C
& (1 << 1))
1809 sio_data
->internal
|= (1 << 1);
1811 sio_data
->beep_pin
= superio_inb(IT87_SIO_BEEP_PIN_REG
) & 0x3f;
1817 superio_select(GPIO
);
1819 reg
= superio_inb(IT87_SIO_GPIO3_REG
);
1820 if (sio_data
->type
== it8721
|| sio_data
->type
== it8728
||
1821 sio_data
->type
== it8782
) {
1823 * IT8721F/IT8758E, and IT8782F don't have VID pins
1824 * at all, not sure about the IT8728F.
1826 sio_data
->skip_vid
= 1;
1828 /* We need at least 4 VID pins */
1830 pr_info("VID is disabled (pins used for GPIO)\n");
1831 sio_data
->skip_vid
= 1;
1835 /* Check if fan3 is there or not */
1837 sio_data
->skip_pwm
|= (1 << 2);
1839 sio_data
->skip_fan
|= (1 << 2);
1841 /* Check if fan2 is there or not */
1842 reg
= superio_inb(IT87_SIO_GPIO5_REG
);
1844 sio_data
->skip_pwm
|= (1 << 1);
1846 sio_data
->skip_fan
|= (1 << 1);
1848 if ((sio_data
->type
== it8718
|| sio_data
->type
== it8720
)
1849 && !(sio_data
->skip_vid
))
1850 sio_data
->vid_value
= superio_inb(IT87_SIO_VID_REG
);
1852 reg
= superio_inb(IT87_SIO_PINX2_REG
);
1854 uart6
= sio_data
->type
== it8782
&& (reg
& (1 << 2));
1857 * The IT8720F has no VIN7 pin, so VCCH should always be
1858 * routed internally to VIN7 with an internal divider.
1859 * Curiously, there still is a configuration bit to control
1860 * this, which means it can be set incorrectly. And even
1861 * more curiously, many boards out there are improperly
1862 * configured, even though the IT8720F datasheet claims
1863 * that the internal routing of VCCH to VIN7 is the default
1864 * setting. So we force the internal routing in this case.
1866 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1867 * If UART6 is enabled, re-route VIN7 to the internal divider
1868 * if that is not already the case.
1870 if ((sio_data
->type
== it8720
|| uart6
) && !(reg
& (1 << 1))) {
1872 superio_outb(IT87_SIO_PINX2_REG
, reg
);
1873 pr_notice("Routing internal VCCH to in7\n");
1876 sio_data
->internal
|= (1 << 0);
1877 if ((reg
& (1 << 1)) || sio_data
->type
== it8721
||
1878 sio_data
->type
== it8728
)
1879 sio_data
->internal
|= (1 << 1);
1882 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1883 * While VIN7 can be routed to the internal voltage divider,
1884 * VIN5 and VIN6 are not available if UART6 is enabled.
1886 * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1887 * is the temperature source. Since we can not read the
1888 * temperature source here, skip_temp is preliminary.
1891 sio_data
->skip_in
|= (1 << 5) | (1 << 6);
1892 sio_data
->skip_temp
|= (1 << 2);
1895 sio_data
->beep_pin
= superio_inb(IT87_SIO_BEEP_PIN_REG
) & 0x3f;
1897 if (sio_data
->beep_pin
)
1898 pr_info("Beeping is supported\n");
1900 /* Disable specific features based on DMI strings */
1901 board_vendor
= dmi_get_system_info(DMI_BOARD_VENDOR
);
1902 board_name
= dmi_get_system_info(DMI_BOARD_NAME
);
1903 if (board_vendor
&& board_name
) {
1904 if (strcmp(board_vendor
, "nVIDIA") == 0
1905 && strcmp(board_name
, "FN68PT") == 0) {
1907 * On the Shuttle SN68PT, FAN_CTL2 is apparently not
1908 * connected to a fan, but to something else. One user
1909 * has reported instant system power-off when changing
1910 * the PWM2 duty cycle, so we disable it.
1911 * I use the board name string as the trigger in case
1912 * the same board is ever used in other systems.
1914 pr_info("Disabling pwm2 due to hardware constraints\n");
1915 sio_data
->skip_pwm
= (1 << 1);
1924 static void it87_remove_files(struct device
*dev
)
1926 struct it87_data
*data
= platform_get_drvdata(pdev
);
1927 struct it87_sio_data
*sio_data
= dev
->platform_data
;
1928 const struct attribute_group
*fan_group
= it87_get_fan_group(data
);
1931 sysfs_remove_group(&dev
->kobj
, &it87_group
);
1932 for (i
= 0; i
< 9; i
++) {
1933 if (sio_data
->skip_in
& (1 << i
))
1935 sysfs_remove_group(&dev
->kobj
, &it87_group_in
[i
]);
1936 if (it87_attributes_in_beep
[i
])
1937 sysfs_remove_file(&dev
->kobj
,
1938 it87_attributes_in_beep
[i
]);
1940 for (i
= 0; i
< 3; i
++) {
1941 if (!(data
->has_temp
& (1 << i
)))
1943 sysfs_remove_group(&dev
->kobj
, &it87_group_temp
[i
]);
1944 if (sio_data
->beep_pin
)
1945 sysfs_remove_file(&dev
->kobj
,
1946 it87_attributes_temp_beep
[i
]);
1948 for (i
= 0; i
< 5; i
++) {
1949 if (!(data
->has_fan
& (1 << i
)))
1951 sysfs_remove_group(&dev
->kobj
, &fan_group
[i
]);
1952 if (sio_data
->beep_pin
)
1953 sysfs_remove_file(&dev
->kobj
,
1954 it87_attributes_fan_beep
[i
]);
1956 for (i
= 0; i
< 3; i
++) {
1957 if (sio_data
->skip_pwm
& (1 << 0))
1959 sysfs_remove_group(&dev
->kobj
, &it87_group_pwm
[i
]);
1960 if (has_old_autopwm(data
))
1961 sysfs_remove_group(&dev
->kobj
,
1962 &it87_group_autopwm
[i
]);
1964 if (!sio_data
->skip_vid
)
1965 sysfs_remove_group(&dev
->kobj
, &it87_group_vid
);
1966 sysfs_remove_group(&dev
->kobj
, &it87_group_label
);
1969 static int __devinit
it87_probe(struct platform_device
*pdev
)
1971 struct it87_data
*data
;
1972 struct resource
*res
;
1973 struct device
*dev
= &pdev
->dev
;
1974 struct it87_sio_data
*sio_data
= dev
->platform_data
;
1975 const struct attribute_group
*fan_group
;
1977 int enable_pwm_interface
;
1978 int fan_beep_need_rw
;
1979 static const char * const names
[] = {
1991 res
= platform_get_resource(pdev
, IORESOURCE_IO
, 0);
1992 if (!devm_request_region(&pdev
->dev
, res
->start
, IT87_EC_EXTENT
,
1994 dev_err(dev
, "Failed to request region 0x%lx-0x%lx\n",
1995 (unsigned long)res
->start
,
1996 (unsigned long)(res
->start
+ IT87_EC_EXTENT
- 1));
2000 data
= devm_kzalloc(&pdev
->dev
, sizeof(struct it87_data
), GFP_KERNEL
);
2004 data
->addr
= res
->start
;
2005 data
->type
= sio_data
->type
;
2006 data
->revision
= sio_data
->revision
;
2007 data
->name
= names
[sio_data
->type
];
2009 /* Now, we do the remaining detection. */
2010 if ((it87_read_value(data
, IT87_REG_CONFIG
) & 0x80)
2011 || it87_read_value(data
, IT87_REG_CHIPID
) != 0x90)
2014 platform_set_drvdata(pdev
, data
);
2016 mutex_init(&data
->update_lock
);
2018 /* Check PWM configuration */
2019 enable_pwm_interface
= it87_check_pwm(dev
);
2021 /* Starting with IT8721F, we handle scaling of internal voltages */
2022 if (has_12mv_adc(data
)) {
2023 if (sio_data
->internal
& (1 << 0))
2024 data
->in_scaled
|= (1 << 3); /* in3 is AVCC */
2025 if (sio_data
->internal
& (1 << 1))
2026 data
->in_scaled
|= (1 << 7); /* in7 is VSB */
2027 if (sio_data
->internal
& (1 << 2))
2028 data
->in_scaled
|= (1 << 8); /* in8 is Vbat */
2029 } else if (sio_data
->type
== it8782
|| sio_data
->type
== it8783
) {
2030 if (sio_data
->internal
& (1 << 0))
2031 data
->in_scaled
|= (1 << 3); /* in3 is VCC5V */
2032 if (sio_data
->internal
& (1 << 1))
2033 data
->in_scaled
|= (1 << 7); /* in7 is VCCH5V */
2036 data
->has_temp
= 0x07;
2037 if (sio_data
->skip_temp
& (1 << 2)) {
2038 if (sio_data
->type
== it8782
2039 && !(it87_read_value(data
, IT87_REG_TEMP_EXTRA
) & 0x80))
2040 data
->has_temp
&= ~(1 << 2);
2043 /* Initialize the IT87 chip */
2044 it87_init_device(pdev
);
2046 /* Register sysfs hooks */
2047 err
= sysfs_create_group(&dev
->kobj
, &it87_group
);
2051 for (i
= 0; i
< 9; i
++) {
2052 if (sio_data
->skip_in
& (1 << i
))
2054 err
= sysfs_create_group(&dev
->kobj
, &it87_group_in
[i
]);
2057 if (sio_data
->beep_pin
&& it87_attributes_in_beep
[i
]) {
2058 err
= sysfs_create_file(&dev
->kobj
,
2059 it87_attributes_in_beep
[i
]);
2065 for (i
= 0; i
< 3; i
++) {
2066 if (!(data
->has_temp
& (1 << i
)))
2068 err
= sysfs_create_group(&dev
->kobj
, &it87_group_temp
[i
]);
2071 if (sio_data
->beep_pin
) {
2072 err
= sysfs_create_file(&dev
->kobj
,
2073 it87_attributes_temp_beep
[i
]);
2079 /* Do not create fan files for disabled fans */
2080 fan_group
= it87_get_fan_group(data
);
2081 fan_beep_need_rw
= 1;
2082 for (i
= 0; i
< 5; i
++) {
2083 if (!(data
->has_fan
& (1 << i
)))
2085 err
= sysfs_create_group(&dev
->kobj
, &fan_group
[i
]);
2089 if (sio_data
->beep_pin
) {
2090 err
= sysfs_create_file(&dev
->kobj
,
2091 it87_attributes_fan_beep
[i
]);
2094 if (!fan_beep_need_rw
)
2098 * As we have a single beep enable bit for all fans,
2099 * only the first enabled fan has a writable attribute
2102 if (sysfs_chmod_file(&dev
->kobj
,
2103 it87_attributes_fan_beep
[i
],
2105 dev_dbg(dev
, "chmod +w fan%d_beep failed\n",
2107 fan_beep_need_rw
= 0;
2111 if (enable_pwm_interface
) {
2112 for (i
= 0; i
< 3; i
++) {
2113 if (sio_data
->skip_pwm
& (1 << i
))
2115 err
= sysfs_create_group(&dev
->kobj
,
2116 &it87_group_pwm
[i
]);
2120 if (!has_old_autopwm(data
))
2122 err
= sysfs_create_group(&dev
->kobj
,
2123 &it87_group_autopwm
[i
]);
2129 if (!sio_data
->skip_vid
) {
2130 data
->vrm
= vid_which_vrm();
2131 /* VID reading from Super-I/O config space if available */
2132 data
->vid
= sio_data
->vid_value
;
2133 err
= sysfs_create_group(&dev
->kobj
, &it87_group_vid
);
2138 /* Export labels for internal sensors */
2139 for (i
= 0; i
< 3; i
++) {
2140 if (!(sio_data
->internal
& (1 << i
)))
2142 err
= sysfs_create_file(&dev
->kobj
,
2143 it87_attributes_label
[i
]);
2148 data
->hwmon_dev
= hwmon_device_register(dev
);
2149 if (IS_ERR(data
->hwmon_dev
)) {
2150 err
= PTR_ERR(data
->hwmon_dev
);
2157 it87_remove_files(dev
);
2161 static int __devexit
it87_remove(struct platform_device
*pdev
)
2163 struct it87_data
*data
= platform_get_drvdata(pdev
);
2165 hwmon_device_unregister(data
->hwmon_dev
);
2166 it87_remove_files(&pdev
->dev
);
2172 * Must be called with data->update_lock held, except during initialization.
2173 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2174 * would slow down the IT87 access and should not be necessary.
2176 static int it87_read_value(struct it87_data
*data
, u8 reg
)
2178 outb_p(reg
, data
->addr
+ IT87_ADDR_REG_OFFSET
);
2179 return inb_p(data
->addr
+ IT87_DATA_REG_OFFSET
);
2183 * Must be called with data->update_lock held, except during initialization.
2184 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2185 * would slow down the IT87 access and should not be necessary.
2187 static void it87_write_value(struct it87_data
*data
, u8 reg
, u8 value
)
2189 outb_p(reg
, data
->addr
+ IT87_ADDR_REG_OFFSET
);
2190 outb_p(value
, data
->addr
+ IT87_DATA_REG_OFFSET
);
2193 /* Return 1 if and only if the PWM interface is safe to use */
2194 static int __devinit
it87_check_pwm(struct device
*dev
)
2196 struct it87_data
*data
= dev_get_drvdata(dev
);
2198 * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2199 * and polarity set to active low is sign that this is the case so we
2200 * disable pwm control to protect the user.
2202 int tmp
= it87_read_value(data
, IT87_REG_FAN_CTL
);
2203 if ((tmp
& 0x87) == 0) {
2204 if (fix_pwm_polarity
) {
2206 * The user asks us to attempt a chip reconfiguration.
2207 * This means switching to active high polarity and
2208 * inverting all fan speed values.
2213 for (i
= 0; i
< 3; i
++)
2214 pwm
[i
] = it87_read_value(data
,
2218 * If any fan is in automatic pwm mode, the polarity
2219 * might be correct, as suspicious as it seems, so we
2220 * better don't change anything (but still disable the
2223 if (!((pwm
[0] | pwm
[1] | pwm
[2]) & 0x80)) {
2224 dev_info(dev
, "Reconfiguring PWM to "
2225 "active high polarity\n");
2226 it87_write_value(data
, IT87_REG_FAN_CTL
,
2228 for (i
= 0; i
< 3; i
++)
2229 it87_write_value(data
,
2235 dev_info(dev
, "PWM configuration is "
2236 "too broken to be fixed\n");
2239 dev_info(dev
, "Detected broken BIOS "
2240 "defaults, disabling PWM interface\n");
2242 } else if (fix_pwm_polarity
) {
2243 dev_info(dev
, "PWM configuration looks "
2244 "sane, won't touch\n");
2250 /* Called when we have found a new IT87. */
2251 static void __devinit
it87_init_device(struct platform_device
*pdev
)
2253 struct it87_sio_data
*sio_data
= pdev
->dev
.platform_data
;
2254 struct it87_data
*data
= platform_get_drvdata(pdev
);
2259 * For each PWM channel:
2260 * - If it is in automatic mode, setting to manual mode should set
2261 * the fan to full speed by default.
2262 * - If it is in manual mode, we need a mapping to temperature
2263 * channels to use when later setting to automatic mode later.
2264 * Use a 1:1 mapping by default (we are clueless.)
2265 * In both cases, the value can (and should) be changed by the user
2266 * prior to switching to a different mode.
2267 * Note that this is no longer needed for the IT8721F and later, as
2268 * these have separate registers for the temperature mapping and the
2269 * manual duty cycle.
2271 for (i
= 0; i
< 3; i
++) {
2272 data
->pwm_temp_map
[i
] = i
;
2273 data
->pwm_duty
[i
] = 0x7f; /* Full speed */
2274 data
->auto_pwm
[i
][3] = 0x7f; /* Full speed, hard-coded */
2278 * Some chips seem to have default value 0xff for all limit
2279 * registers. For low voltage limits it makes no sense and triggers
2280 * alarms, so change to 0 instead. For high temperature limits, it
2281 * means -1 degree C, which surprisingly doesn't trigger an alarm,
2282 * but is still confusing, so change to 127 degrees C.
2284 for (i
= 0; i
< 8; i
++) {
2285 tmp
= it87_read_value(data
, IT87_REG_VIN_MIN(i
));
2287 it87_write_value(data
, IT87_REG_VIN_MIN(i
), 0);
2289 for (i
= 0; i
< 3; i
++) {
2290 tmp
= it87_read_value(data
, IT87_REG_TEMP_HIGH(i
));
2292 it87_write_value(data
, IT87_REG_TEMP_HIGH(i
), 127);
2296 * Temperature channels are not forcibly enabled, as they can be
2297 * set to two different sensor types and we can't guess which one
2298 * is correct for a given system. These channels can be enabled at
2299 * run-time through the temp{1-3}_type sysfs accessors if needed.
2302 /* Check if voltage monitors are reset manually or by some reason */
2303 tmp
= it87_read_value(data
, IT87_REG_VIN_ENABLE
);
2304 if ((tmp
& 0xff) == 0) {
2305 /* Enable all voltage monitors */
2306 it87_write_value(data
, IT87_REG_VIN_ENABLE
, 0xff);
2309 /* Check if tachometers are reset manually or by some reason */
2310 mask
= 0x70 & ~(sio_data
->skip_fan
<< 4);
2311 data
->fan_main_ctrl
= it87_read_value(data
, IT87_REG_FAN_MAIN_CTRL
);
2312 if ((data
->fan_main_ctrl
& mask
) == 0) {
2313 /* Enable all fan tachometers */
2314 data
->fan_main_ctrl
|= mask
;
2315 it87_write_value(data
, IT87_REG_FAN_MAIN_CTRL
,
2316 data
->fan_main_ctrl
);
2318 data
->has_fan
= (data
->fan_main_ctrl
>> 4) & 0x07;
2320 /* Set tachometers to 16-bit mode if needed */
2321 if (has_16bit_fans(data
)) {
2322 tmp
= it87_read_value(data
, IT87_REG_FAN_16BIT
);
2323 if (~tmp
& 0x07 & data
->has_fan
) {
2325 "Setting fan1-3 to 16-bit mode\n");
2326 it87_write_value(data
, IT87_REG_FAN_16BIT
,
2329 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2330 if (data
->type
!= it87
&& data
->type
!= it8782
&&
2331 data
->type
!= it8783
) {
2333 data
->has_fan
|= (1 << 3); /* fan4 enabled */
2335 data
->has_fan
|= (1 << 4); /* fan5 enabled */
2339 /* Fan input pins may be used for alternative functions */
2340 data
->has_fan
&= ~sio_data
->skip_fan
;
2342 /* Start monitoring */
2343 it87_write_value(data
, IT87_REG_CONFIG
,
2344 (it87_read_value(data
, IT87_REG_CONFIG
) & 0x3e)
2345 | (update_vbat
? 0x41 : 0x01));
2348 static void it87_update_pwm_ctrl(struct it87_data
*data
, int nr
)
2350 data
->pwm_ctrl
[nr
] = it87_read_value(data
, IT87_REG_PWM(nr
));
2351 if (has_newer_autopwm(data
)) {
2352 data
->pwm_temp_map
[nr
] = data
->pwm_ctrl
[nr
] & 0x03;
2353 data
->pwm_duty
[nr
] = it87_read_value(data
,
2354 IT87_REG_PWM_DUTY(nr
));
2356 if (data
->pwm_ctrl
[nr
] & 0x80) /* Automatic mode */
2357 data
->pwm_temp_map
[nr
] = data
->pwm_ctrl
[nr
] & 0x03;
2358 else /* Manual mode */
2359 data
->pwm_duty
[nr
] = data
->pwm_ctrl
[nr
] & 0x7f;
2362 if (has_old_autopwm(data
)) {
2365 for (i
= 0; i
< 5 ; i
++)
2366 data
->auto_temp
[nr
][i
] = it87_read_value(data
,
2367 IT87_REG_AUTO_TEMP(nr
, i
));
2368 for (i
= 0; i
< 3 ; i
++)
2369 data
->auto_pwm
[nr
][i
] = it87_read_value(data
,
2370 IT87_REG_AUTO_PWM(nr
, i
));
2374 static struct it87_data
*it87_update_device(struct device
*dev
)
2376 struct it87_data
*data
= dev_get_drvdata(dev
);
2379 mutex_lock(&data
->update_lock
);
2381 if (time_after(jiffies
, data
->last_updated
+ HZ
+ HZ
/ 2)
2385 * Cleared after each update, so reenable. Value
2386 * returned by this read will be previous value
2388 it87_write_value(data
, IT87_REG_CONFIG
,
2389 it87_read_value(data
, IT87_REG_CONFIG
) | 0x40);
2391 for (i
= 0; i
<= 7; i
++) {
2393 it87_read_value(data
, IT87_REG_VIN(i
));
2395 it87_read_value(data
, IT87_REG_VIN_MIN(i
));
2397 it87_read_value(data
, IT87_REG_VIN_MAX(i
));
2399 /* in8 (battery) has no limit registers */
2400 data
->in
[8] = it87_read_value(data
, IT87_REG_VIN(8));
2402 for (i
= 0; i
< 5; i
++) {
2403 /* Skip disabled fans */
2404 if (!(data
->has_fan
& (1 << i
)))
2408 it87_read_value(data
, IT87_REG_FAN_MIN
[i
]);
2409 data
->fan
[i
] = it87_read_value(data
,
2411 /* Add high byte if in 16-bit mode */
2412 if (has_16bit_fans(data
)) {
2413 data
->fan
[i
] |= it87_read_value(data
,
2414 IT87_REG_FANX
[i
]) << 8;
2415 data
->fan_min
[i
] |= it87_read_value(data
,
2416 IT87_REG_FANX_MIN
[i
]) << 8;
2419 for (i
= 0; i
< 3; i
++) {
2420 if (!(data
->has_temp
& (1 << i
)))
2423 it87_read_value(data
, IT87_REG_TEMP(i
));
2424 data
->temp_high
[i
] =
2425 it87_read_value(data
, IT87_REG_TEMP_HIGH(i
));
2427 it87_read_value(data
, IT87_REG_TEMP_LOW(i
));
2430 /* Newer chips don't have clock dividers */
2431 if ((data
->has_fan
& 0x07) && !has_16bit_fans(data
)) {
2432 i
= it87_read_value(data
, IT87_REG_FAN_DIV
);
2433 data
->fan_div
[0] = i
& 0x07;
2434 data
->fan_div
[1] = (i
>> 3) & 0x07;
2435 data
->fan_div
[2] = (i
& 0x40) ? 3 : 1;
2439 it87_read_value(data
, IT87_REG_ALARM1
) |
2440 (it87_read_value(data
, IT87_REG_ALARM2
) << 8) |
2441 (it87_read_value(data
, IT87_REG_ALARM3
) << 16);
2442 data
->beeps
= it87_read_value(data
, IT87_REG_BEEP_ENABLE
);
2444 data
->fan_main_ctrl
= it87_read_value(data
,
2445 IT87_REG_FAN_MAIN_CTRL
);
2446 data
->fan_ctl
= it87_read_value(data
, IT87_REG_FAN_CTL
);
2447 for (i
= 0; i
< 3; i
++)
2448 it87_update_pwm_ctrl(data
, i
);
2450 data
->sensor
= it87_read_value(data
, IT87_REG_TEMP_ENABLE
);
2452 * The IT8705F does not have VID capability.
2453 * The IT8718F and later don't use IT87_REG_VID for the
2456 if (data
->type
== it8712
|| data
->type
== it8716
) {
2457 data
->vid
= it87_read_value(data
, IT87_REG_VID
);
2459 * The older IT8712F revisions had only 5 VID pins,
2460 * but we assume it is always safe to read 6 bits.
2464 data
->last_updated
= jiffies
;
2468 mutex_unlock(&data
->update_lock
);
2473 static int __init
it87_device_add(unsigned short address
,
2474 const struct it87_sio_data
*sio_data
)
2476 struct resource res
= {
2477 .start
= address
+ IT87_EC_OFFSET
,
2478 .end
= address
+ IT87_EC_OFFSET
+ IT87_EC_EXTENT
- 1,
2480 .flags
= IORESOURCE_IO
,
2484 err
= acpi_check_resource_conflict(&res
);
2488 pdev
= platform_device_alloc(DRVNAME
, address
);
2491 pr_err("Device allocation failed\n");
2495 err
= platform_device_add_resources(pdev
, &res
, 1);
2497 pr_err("Device resource addition failed (%d)\n", err
);
2498 goto exit_device_put
;
2501 err
= platform_device_add_data(pdev
, sio_data
,
2502 sizeof(struct it87_sio_data
));
2504 pr_err("Platform data allocation failed\n");
2505 goto exit_device_put
;
2508 err
= platform_device_add(pdev
);
2510 pr_err("Device addition failed (%d)\n", err
);
2511 goto exit_device_put
;
2517 platform_device_put(pdev
);
2522 static int __init
sm_it87_init(void)
2525 unsigned short isa_address
= 0;
2526 struct it87_sio_data sio_data
;
2528 memset(&sio_data
, 0, sizeof(struct it87_sio_data
));
2529 err
= it87_find(&isa_address
, &sio_data
);
2532 err
= platform_driver_register(&it87_driver
);
2536 err
= it87_device_add(isa_address
, &sio_data
);
2538 platform_driver_unregister(&it87_driver
);
2545 static void __exit
sm_it87_exit(void)
2547 platform_device_unregister(pdev
);
2548 platform_driver_unregister(&it87_driver
);
2552 MODULE_AUTHOR("Chris Gauthron, "
2553 "Jean Delvare <khali@linux-fr.org>");
2554 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2555 module_param(update_vbat
, bool, 0);
2556 MODULE_PARM_DESC(update_vbat
, "Update vbat if set else return powerup value");
2557 module_param(fix_pwm_polarity
, bool, 0);
2558 MODULE_PARM_DESC(fix_pwm_polarity
,
2559 "Force PWM polarity to active high (DANGEROUS)");
2560 MODULE_LICENSE("GPL");
2562 module_init(sm_it87_init
);
2563 module_exit(sm_it87_exit
);