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 static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 };
208 #define IT87_REG_FAN_MAIN_CTRL 0x13
209 #define IT87_REG_FAN_CTL 0x14
210 #define IT87_REG_PWM(nr) (0x15 + (nr))
211 #define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8)
213 #define IT87_REG_VIN(nr) (0x20 + (nr))
214 #define IT87_REG_TEMP(nr) (0x29 + (nr))
216 #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
217 #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
218 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
219 #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
221 #define IT87_REG_VIN_ENABLE 0x50
222 #define IT87_REG_TEMP_ENABLE 0x51
223 #define IT87_REG_TEMP_EXTRA 0x55
224 #define IT87_REG_BEEP_ENABLE 0x5c
226 #define IT87_REG_CHIPID 0x58
228 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
229 #define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i))
231 struct it87_devices {
236 #define FEAT_12MV_ADC (1 << 0)
237 #define FEAT_NEWER_AUTOPWM (1 << 1)
238 #define FEAT_OLD_AUTOPWM (1 << 2)
239 #define FEAT_16BIT_FANS (1 << 3)
240 #define FEAT_TEMP_OFFSET (1 << 4)
242 static const struct it87_devices it87_devices[] = {
245 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */
249 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */
253 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
257 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
261 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
265 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
270 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
275 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
279 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
283 #define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS)
284 #define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC)
285 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
286 #define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM)
287 #define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET)
289 struct it87_sio_data {
291 /* Values read from Super-I/O config space */
295 u8 internal; /* Internal sensors can be labeled */
296 /* Features skipped based on config or DMI */
305 * For each registered chip, we need to keep some data in memory.
306 * The structure is dynamically allocated.
309 struct device *hwmon_dev;
315 struct mutex update_lock;
316 char valid; /* !=0 if following fields are valid */
317 unsigned long last_updated; /* In jiffies */
319 u16 in_scaled; /* Internal voltage sensors are scaled */
320 u8 in[9][3]; /* [nr][0]=in, [1]=min, [2]=max */
321 u8 has_fan; /* Bitfield, fans enabled */
322 u16 fan[5][2]; /* Register values, [nr][0]=fan, [1]=min */
323 u8 has_temp; /* Bitfield, temp sensors enabled */
324 s8 temp[3][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
325 u8 sensor; /* Register value */
326 u8 fan_div[3]; /* Register encoding, shifted right */
327 u8 vid; /* Register encoding, combined */
329 u32 alarms; /* Register encoding, combined */
330 u8 beeps; /* Register encoding */
331 u8 fan_main_ctrl; /* Register value */
332 u8 fan_ctl; /* Register value */
335 * The following 3 arrays correspond to the same registers up to
336 * the IT8720F. The meaning of bits 6-0 depends on the value of bit
337 * 7, and we want to preserve settings on mode changes, so we have
338 * to track all values separately.
339 * Starting with the IT8721F, the manual PWM duty cycles are stored
340 * in separate registers (8-bit values), so the separate tracking
341 * is no longer needed, but it is still done to keep the driver
344 u8 pwm_ctrl[3]; /* Register value */
345 u8 pwm_duty[3]; /* Manual PWM value set by user */
346 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */
348 /* Automatic fan speed control registers */
349 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */
350 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
353 static int adc_lsb(const struct it87_data *data, int nr)
355 int lsb = has_12mv_adc(data) ? 12 : 16;
356 if (data->in_scaled & (1 << nr))
361 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
363 val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
364 return SENSORS_LIMIT(val, 0, 255);
367 static int in_from_reg(const struct it87_data *data, int nr, int val)
369 return val * adc_lsb(data, nr);
372 static inline u8 FAN_TO_REG(long rpm, int div)
376 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
377 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
381 static inline u16 FAN16_TO_REG(long rpm)
385 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
388 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
389 1350000 / ((val) * (div)))
390 /* The divider is fixed to 2 in 16-bit mode */
391 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
392 1350000 / ((val) * 2))
394 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
395 ((val) + 500) / 1000), -128, 127))
396 #define TEMP_FROM_REG(val) ((val) * 1000)
398 static u8 pwm_to_reg(const struct it87_data *data, long val)
400 if (has_newer_autopwm(data))
406 static int pwm_from_reg(const struct it87_data *data, u8 reg)
408 if (has_newer_autopwm(data))
411 return (reg & 0x7f) << 1;
415 static int DIV_TO_REG(int val)
418 while (answer < 7 && (val >>= 1))
422 #define DIV_FROM_REG(val) (1 << (val))
424 static const unsigned int pwm_freq[8] = {
435 static int it87_probe(struct platform_device *pdev);
436 static int it87_remove(struct platform_device *pdev);
438 static int it87_read_value(struct it87_data *data, u8 reg);
439 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
440 static struct it87_data *it87_update_device(struct device *dev);
441 static int it87_check_pwm(struct device *dev);
442 static void it87_init_device(struct platform_device *pdev);
445 static struct platform_driver it87_driver = {
447 .owner = THIS_MODULE,
451 .remove = it87_remove,
454 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
457 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
459 int index = sattr->index;
461 struct it87_data *data = it87_update_device(dev);
462 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
465 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
466 const char *buf, size_t count)
468 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
470 int index = sattr->index;
472 struct it87_data *data = dev_get_drvdata(dev);
475 if (kstrtoul(buf, 10, &val) < 0)
478 mutex_lock(&data->update_lock);
479 data->in[nr][index] = in_to_reg(data, nr, val);
480 it87_write_value(data,
481 index == 1 ? IT87_REG_VIN_MIN(nr)
482 : IT87_REG_VIN_MAX(nr),
483 data->in[nr][index]);
484 mutex_unlock(&data->update_lock);
488 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
489 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
491 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
494 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
495 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
497 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
500 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
501 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
503 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
506 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
507 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
509 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
512 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
513 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
515 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
518 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
519 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
521 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
524 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
525 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
527 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
530 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
531 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
533 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
536 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
539 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
542 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
544 int index = sattr->index;
545 struct it87_data *data = it87_update_device(dev);
547 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
550 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
551 const char *buf, size_t count)
553 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
555 int index = sattr->index;
556 struct it87_data *data = dev_get_drvdata(dev);
560 if (kstrtol(buf, 10, &val) < 0)
563 mutex_lock(&data->update_lock);
568 reg = IT87_REG_TEMP_LOW(nr);
571 reg = IT87_REG_TEMP_HIGH(nr);
574 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
575 if (!(regval & 0x80)) {
577 it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
580 reg = IT87_REG_TEMP_OFFSET[nr];
584 data->temp[nr][index] = TEMP_TO_REG(val);
585 it87_write_value(data, reg, data->temp[nr][index]);
586 mutex_unlock(&data->update_lock);
590 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
591 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
593 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
595 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
597 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
598 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
600 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
602 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
604 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
605 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
607 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
609 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
612 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
615 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
616 int nr = sensor_attr->index;
617 struct it87_data *data = it87_update_device(dev);
618 u8 reg = data->sensor; /* In case value is updated while used */
621 return sprintf(buf, "3\n"); /* thermal diode */
623 return sprintf(buf, "4\n"); /* thermistor */
624 return sprintf(buf, "0\n"); /* disabled */
627 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
628 const char *buf, size_t count)
630 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
631 int nr = sensor_attr->index;
633 struct it87_data *data = dev_get_drvdata(dev);
637 if (kstrtol(buf, 10, &val) < 0)
640 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
643 if (val == 2) { /* backwards compatibility */
645 "Sensor type 2 is deprecated, please use 4 instead\n");
648 /* 3 = thermal diode; 4 = thermistor; 0 = disabled */
656 mutex_lock(&data->update_lock);
658 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
659 data->valid = 0; /* Force cache refresh */
660 mutex_unlock(&data->update_lock);
664 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
666 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
668 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
673 static int pwm_mode(const struct it87_data *data, int nr)
675 int ctrl = data->fan_main_ctrl & (1 << nr);
677 if (ctrl == 0) /* Full speed */
679 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
681 else /* Manual mode */
685 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
688 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
690 int index = sattr->index;
692 struct it87_data *data = it87_update_device(dev);
694 speed = has_16bit_fans(data) ?
695 FAN16_FROM_REG(data->fan[nr][index]) :
696 FAN_FROM_REG(data->fan[nr][index],
697 DIV_FROM_REG(data->fan_div[nr]));
698 return sprintf(buf, "%d\n", speed);
701 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
704 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
705 int nr = sensor_attr->index;
707 struct it87_data *data = it87_update_device(dev);
708 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
710 static ssize_t show_pwm_enable(struct device *dev,
711 struct device_attribute *attr, char *buf)
713 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
714 int nr = sensor_attr->index;
716 struct it87_data *data = it87_update_device(dev);
717 return sprintf(buf, "%d\n", pwm_mode(data, nr));
719 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
722 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
723 int nr = sensor_attr->index;
725 struct it87_data *data = it87_update_device(dev);
726 return sprintf(buf, "%d\n",
727 pwm_from_reg(data, data->pwm_duty[nr]));
729 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
732 struct it87_data *data = it87_update_device(dev);
733 int index = (data->fan_ctl >> 4) & 0x07;
735 return sprintf(buf, "%u\n", pwm_freq[index]);
738 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
739 const char *buf, size_t count)
741 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
743 int index = sattr->index;
745 struct it87_data *data = dev_get_drvdata(dev);
749 if (kstrtol(buf, 10, &val) < 0)
752 mutex_lock(&data->update_lock);
754 if (has_16bit_fans(data)) {
755 data->fan[nr][index] = FAN16_TO_REG(val);
756 it87_write_value(data, IT87_REG_FAN_MIN[nr],
757 data->fan[nr][index] & 0xff);
758 it87_write_value(data, IT87_REG_FANX_MIN[nr],
759 data->fan[nr][index] >> 8);
761 reg = it87_read_value(data, IT87_REG_FAN_DIV);
764 data->fan_div[nr] = reg & 0x07;
767 data->fan_div[nr] = (reg >> 3) & 0x07;
770 data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
773 data->fan[nr][index] =
774 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
775 it87_write_value(data, IT87_REG_FAN_MIN[nr],
776 data->fan[nr][index]);
779 mutex_unlock(&data->update_lock);
783 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
784 const char *buf, size_t count)
786 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
787 int nr = sensor_attr->index;
789 struct it87_data *data = dev_get_drvdata(dev);
794 if (kstrtoul(buf, 10, &val) < 0)
797 mutex_lock(&data->update_lock);
798 old = it87_read_value(data, IT87_REG_FAN_DIV);
800 /* Save fan min limit */
801 min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
806 data->fan_div[nr] = DIV_TO_REG(val);
810 data->fan_div[nr] = 1;
812 data->fan_div[nr] = 3;
815 val |= (data->fan_div[0] & 0x07);
816 val |= (data->fan_div[1] & 0x07) << 3;
817 if (data->fan_div[2] == 3)
819 it87_write_value(data, IT87_REG_FAN_DIV, val);
821 /* Restore fan min limit */
822 data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
823 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
825 mutex_unlock(&data->update_lock);
829 /* Returns 0 if OK, -EINVAL otherwise */
830 static int check_trip_points(struct device *dev, int nr)
832 const struct it87_data *data = dev_get_drvdata(dev);
835 if (has_old_autopwm(data)) {
836 for (i = 0; i < 3; i++) {
837 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
840 for (i = 0; i < 2; i++) {
841 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
848 "Inconsistent trip points, not switching to automatic mode\n");
849 dev_err(dev, "Adjust the trip points and try again\n");
854 static ssize_t set_pwm_enable(struct device *dev,
855 struct device_attribute *attr, const char *buf, size_t count)
857 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
858 int nr = sensor_attr->index;
860 struct it87_data *data = dev_get_drvdata(dev);
863 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
866 /* Check trip points before switching to automatic mode */
868 if (check_trip_points(dev, nr) < 0)
872 mutex_lock(&data->update_lock);
876 /* make sure the fan is on when in on/off mode */
877 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
878 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
879 /* set on/off mode */
880 data->fan_main_ctrl &= ~(1 << nr);
881 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
882 data->fan_main_ctrl);
884 if (val == 1) /* Manual mode */
885 data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
886 data->pwm_temp_map[nr] :
888 else /* Automatic mode */
889 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
890 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
891 /* set SmartGuardian mode */
892 data->fan_main_ctrl |= (1 << nr);
893 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
894 data->fan_main_ctrl);
897 mutex_unlock(&data->update_lock);
900 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
901 const char *buf, size_t count)
903 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
904 int nr = sensor_attr->index;
906 struct it87_data *data = dev_get_drvdata(dev);
909 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
912 mutex_lock(&data->update_lock);
913 if (has_newer_autopwm(data)) {
915 * If we are in automatic mode, the PWM duty cycle register
916 * is read-only so we can't write the value.
918 if (data->pwm_ctrl[nr] & 0x80) {
919 mutex_unlock(&data->update_lock);
922 data->pwm_duty[nr] = pwm_to_reg(data, val);
923 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
926 data->pwm_duty[nr] = pwm_to_reg(data, val);
928 * If we are in manual mode, write the duty cycle immediately;
929 * otherwise, just store it for later use.
931 if (!(data->pwm_ctrl[nr] & 0x80)) {
932 data->pwm_ctrl[nr] = data->pwm_duty[nr];
933 it87_write_value(data, IT87_REG_PWM(nr),
937 mutex_unlock(&data->update_lock);
940 static ssize_t set_pwm_freq(struct device *dev,
941 struct device_attribute *attr, const char *buf, size_t count)
943 struct it87_data *data = dev_get_drvdata(dev);
947 if (kstrtoul(buf, 10, &val) < 0)
950 /* Search for the nearest available frequency */
951 for (i = 0; i < 7; i++) {
952 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
956 mutex_lock(&data->update_lock);
957 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
958 data->fan_ctl |= i << 4;
959 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
960 mutex_unlock(&data->update_lock);
964 static ssize_t show_pwm_temp_map(struct device *dev,
965 struct device_attribute *attr, char *buf)
967 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
968 int nr = sensor_attr->index;
970 struct it87_data *data = it87_update_device(dev);
973 if (data->pwm_temp_map[nr] < 3)
974 map = 1 << data->pwm_temp_map[nr];
976 map = 0; /* Should never happen */
977 return sprintf(buf, "%d\n", map);
979 static ssize_t set_pwm_temp_map(struct device *dev,
980 struct device_attribute *attr, const char *buf, size_t count)
982 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
983 int nr = sensor_attr->index;
985 struct it87_data *data = dev_get_drvdata(dev);
990 * This check can go away if we ever support automatic fan speed
991 * control on newer chips.
993 if (!has_old_autopwm(data)) {
994 dev_notice(dev, "Mapping change disabled for safety reasons\n");
998 if (kstrtol(buf, 10, &val) < 0)
1015 mutex_lock(&data->update_lock);
1016 data->pwm_temp_map[nr] = reg;
1018 * If we are in automatic mode, write the temp mapping immediately;
1019 * otherwise, just store it for later use.
1021 if (data->pwm_ctrl[nr] & 0x80) {
1022 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1023 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1025 mutex_unlock(&data->update_lock);
1029 static ssize_t show_auto_pwm(struct device *dev,
1030 struct device_attribute *attr, char *buf)
1032 struct it87_data *data = it87_update_device(dev);
1033 struct sensor_device_attribute_2 *sensor_attr =
1034 to_sensor_dev_attr_2(attr);
1035 int nr = sensor_attr->nr;
1036 int point = sensor_attr->index;
1038 return sprintf(buf, "%d\n",
1039 pwm_from_reg(data, data->auto_pwm[nr][point]));
1042 static ssize_t set_auto_pwm(struct device *dev,
1043 struct device_attribute *attr, const char *buf, size_t count)
1045 struct it87_data *data = dev_get_drvdata(dev);
1046 struct sensor_device_attribute_2 *sensor_attr =
1047 to_sensor_dev_attr_2(attr);
1048 int nr = sensor_attr->nr;
1049 int point = sensor_attr->index;
1052 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1055 mutex_lock(&data->update_lock);
1056 data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1057 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1058 data->auto_pwm[nr][point]);
1059 mutex_unlock(&data->update_lock);
1063 static ssize_t show_auto_temp(struct device *dev,
1064 struct device_attribute *attr, char *buf)
1066 struct it87_data *data = it87_update_device(dev);
1067 struct sensor_device_attribute_2 *sensor_attr =
1068 to_sensor_dev_attr_2(attr);
1069 int nr = sensor_attr->nr;
1070 int point = sensor_attr->index;
1072 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1075 static ssize_t set_auto_temp(struct device *dev,
1076 struct device_attribute *attr, const char *buf, size_t count)
1078 struct it87_data *data = dev_get_drvdata(dev);
1079 struct sensor_device_attribute_2 *sensor_attr =
1080 to_sensor_dev_attr_2(attr);
1081 int nr = sensor_attr->nr;
1082 int point = sensor_attr->index;
1085 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1088 mutex_lock(&data->update_lock);
1089 data->auto_temp[nr][point] = TEMP_TO_REG(val);
1090 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1091 data->auto_temp[nr][point]);
1092 mutex_unlock(&data->update_lock);
1096 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1097 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1099 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1102 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1103 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1105 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1108 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1109 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1111 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1114 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1115 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1118 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1119 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1122 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1123 show_pwm_enable, set_pwm_enable, 0);
1124 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1125 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1126 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1127 show_pwm_temp_map, set_pwm_temp_map, 0);
1128 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1129 show_auto_pwm, set_auto_pwm, 0, 0);
1130 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1131 show_auto_pwm, set_auto_pwm, 0, 1);
1132 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1133 show_auto_pwm, set_auto_pwm, 0, 2);
1134 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1135 show_auto_pwm, NULL, 0, 3);
1136 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1137 show_auto_temp, set_auto_temp, 0, 1);
1138 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1139 show_auto_temp, set_auto_temp, 0, 0);
1140 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1141 show_auto_temp, set_auto_temp, 0, 2);
1142 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1143 show_auto_temp, set_auto_temp, 0, 3);
1144 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1145 show_auto_temp, set_auto_temp, 0, 4);
1147 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1148 show_pwm_enable, set_pwm_enable, 1);
1149 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1150 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1151 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1152 show_pwm_temp_map, set_pwm_temp_map, 1);
1153 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1154 show_auto_pwm, set_auto_pwm, 1, 0);
1155 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1156 show_auto_pwm, set_auto_pwm, 1, 1);
1157 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1158 show_auto_pwm, set_auto_pwm, 1, 2);
1159 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1160 show_auto_pwm, NULL, 1, 3);
1161 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1162 show_auto_temp, set_auto_temp, 1, 1);
1163 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1164 show_auto_temp, set_auto_temp, 1, 0);
1165 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1166 show_auto_temp, set_auto_temp, 1, 2);
1167 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1168 show_auto_temp, set_auto_temp, 1, 3);
1169 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1170 show_auto_temp, set_auto_temp, 1, 4);
1172 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1173 show_pwm_enable, set_pwm_enable, 2);
1174 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1175 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1176 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1177 show_pwm_temp_map, set_pwm_temp_map, 2);
1178 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1179 show_auto_pwm, set_auto_pwm, 2, 0);
1180 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1181 show_auto_pwm, set_auto_pwm, 2, 1);
1182 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1183 show_auto_pwm, set_auto_pwm, 2, 2);
1184 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1185 show_auto_pwm, NULL, 2, 3);
1186 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1187 show_auto_temp, set_auto_temp, 2, 1);
1188 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1189 show_auto_temp, set_auto_temp, 2, 0);
1190 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1191 show_auto_temp, set_auto_temp, 2, 2);
1192 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1193 show_auto_temp, set_auto_temp, 2, 3);
1194 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1195 show_auto_temp, set_auto_temp, 2, 4);
1198 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1201 struct it87_data *data = it87_update_device(dev);
1202 return sprintf(buf, "%u\n", data->alarms);
1204 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1206 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1209 int bitnr = to_sensor_dev_attr(attr)->index;
1210 struct it87_data *data = it87_update_device(dev);
1211 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1214 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1215 *attr, const char *buf, size_t count)
1217 struct it87_data *data = dev_get_drvdata(dev);
1221 if (kstrtol(buf, 10, &val) < 0 || val != 0)
1224 mutex_lock(&data->update_lock);
1225 config = it87_read_value(data, IT87_REG_CONFIG);
1230 it87_write_value(data, IT87_REG_CONFIG, config);
1231 /* Invalidate cache to force re-read */
1234 mutex_unlock(&data->update_lock);
1239 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1240 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1241 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1242 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1243 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1244 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1245 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1246 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1247 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1248 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1249 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1250 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1251 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1252 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1253 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1254 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1255 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1256 show_alarm, clear_intrusion, 4);
1258 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1261 int bitnr = to_sensor_dev_attr(attr)->index;
1262 struct it87_data *data = it87_update_device(dev);
1263 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1265 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1266 const char *buf, size_t count)
1268 int bitnr = to_sensor_dev_attr(attr)->index;
1269 struct it87_data *data = dev_get_drvdata(dev);
1272 if (kstrtol(buf, 10, &val) < 0
1273 || (val != 0 && val != 1))
1276 mutex_lock(&data->update_lock);
1277 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1279 data->beeps |= (1 << bitnr);
1281 data->beeps &= ~(1 << bitnr);
1282 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1283 mutex_unlock(&data->update_lock);
1287 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1288 show_beep, set_beep, 1);
1289 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1290 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1291 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1292 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1293 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1294 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1295 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1296 /* fanX_beep writability is set later */
1297 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1298 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1299 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1300 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1301 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1302 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1303 show_beep, set_beep, 2);
1304 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1305 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1307 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1310 struct it87_data *data = dev_get_drvdata(dev);
1311 return sprintf(buf, "%u\n", data->vrm);
1313 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1314 const char *buf, size_t count)
1316 struct it87_data *data = dev_get_drvdata(dev);
1319 if (kstrtoul(buf, 10, &val) < 0)
1326 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1328 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1331 struct it87_data *data = it87_update_device(dev);
1332 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1334 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1336 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1339 static const char * const labels[] = {
1344 static const char * const labels_it8721[] = {
1349 struct it87_data *data = dev_get_drvdata(dev);
1350 int nr = to_sensor_dev_attr(attr)->index;
1352 return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1355 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1356 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1357 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1359 static ssize_t show_name(struct device *dev, struct device_attribute
1360 *devattr, char *buf)
1362 struct it87_data *data = dev_get_drvdata(dev);
1363 return sprintf(buf, "%s\n", data->name);
1365 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1367 static struct attribute *it87_attributes_in[9][5] = {
1369 &sensor_dev_attr_in0_input.dev_attr.attr,
1370 &sensor_dev_attr_in0_min.dev_attr.attr,
1371 &sensor_dev_attr_in0_max.dev_attr.attr,
1372 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1375 &sensor_dev_attr_in1_input.dev_attr.attr,
1376 &sensor_dev_attr_in1_min.dev_attr.attr,
1377 &sensor_dev_attr_in1_max.dev_attr.attr,
1378 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1381 &sensor_dev_attr_in2_input.dev_attr.attr,
1382 &sensor_dev_attr_in2_min.dev_attr.attr,
1383 &sensor_dev_attr_in2_max.dev_attr.attr,
1384 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1387 &sensor_dev_attr_in3_input.dev_attr.attr,
1388 &sensor_dev_attr_in3_min.dev_attr.attr,
1389 &sensor_dev_attr_in3_max.dev_attr.attr,
1390 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1393 &sensor_dev_attr_in4_input.dev_attr.attr,
1394 &sensor_dev_attr_in4_min.dev_attr.attr,
1395 &sensor_dev_attr_in4_max.dev_attr.attr,
1396 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1399 &sensor_dev_attr_in5_input.dev_attr.attr,
1400 &sensor_dev_attr_in5_min.dev_attr.attr,
1401 &sensor_dev_attr_in5_max.dev_attr.attr,
1402 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1405 &sensor_dev_attr_in6_input.dev_attr.attr,
1406 &sensor_dev_attr_in6_min.dev_attr.attr,
1407 &sensor_dev_attr_in6_max.dev_attr.attr,
1408 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1411 &sensor_dev_attr_in7_input.dev_attr.attr,
1412 &sensor_dev_attr_in7_min.dev_attr.attr,
1413 &sensor_dev_attr_in7_max.dev_attr.attr,
1414 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1417 &sensor_dev_attr_in8_input.dev_attr.attr,
1421 static const struct attribute_group it87_group_in[9] = {
1422 { .attrs = it87_attributes_in[0] },
1423 { .attrs = it87_attributes_in[1] },
1424 { .attrs = it87_attributes_in[2] },
1425 { .attrs = it87_attributes_in[3] },
1426 { .attrs = it87_attributes_in[4] },
1427 { .attrs = it87_attributes_in[5] },
1428 { .attrs = it87_attributes_in[6] },
1429 { .attrs = it87_attributes_in[7] },
1430 { .attrs = it87_attributes_in[8] },
1433 static struct attribute *it87_attributes_temp[3][6] = {
1435 &sensor_dev_attr_temp1_input.dev_attr.attr,
1436 &sensor_dev_attr_temp1_max.dev_attr.attr,
1437 &sensor_dev_attr_temp1_min.dev_attr.attr,
1438 &sensor_dev_attr_temp1_type.dev_attr.attr,
1439 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1442 &sensor_dev_attr_temp2_input.dev_attr.attr,
1443 &sensor_dev_attr_temp2_max.dev_attr.attr,
1444 &sensor_dev_attr_temp2_min.dev_attr.attr,
1445 &sensor_dev_attr_temp2_type.dev_attr.attr,
1446 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1449 &sensor_dev_attr_temp3_input.dev_attr.attr,
1450 &sensor_dev_attr_temp3_max.dev_attr.attr,
1451 &sensor_dev_attr_temp3_min.dev_attr.attr,
1452 &sensor_dev_attr_temp3_type.dev_attr.attr,
1453 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1457 static const struct attribute_group it87_group_temp[3] = {
1458 { .attrs = it87_attributes_temp[0] },
1459 { .attrs = it87_attributes_temp[1] },
1460 { .attrs = it87_attributes_temp[2] },
1463 static struct attribute *it87_attributes_temp_offset[] = {
1464 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1465 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1466 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1469 static struct attribute *it87_attributes[] = {
1470 &dev_attr_alarms.attr,
1471 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1472 &dev_attr_name.attr,
1476 static const struct attribute_group it87_group = {
1477 .attrs = it87_attributes,
1480 static struct attribute *it87_attributes_in_beep[] = {
1481 &sensor_dev_attr_in0_beep.dev_attr.attr,
1482 &sensor_dev_attr_in1_beep.dev_attr.attr,
1483 &sensor_dev_attr_in2_beep.dev_attr.attr,
1484 &sensor_dev_attr_in3_beep.dev_attr.attr,
1485 &sensor_dev_attr_in4_beep.dev_attr.attr,
1486 &sensor_dev_attr_in5_beep.dev_attr.attr,
1487 &sensor_dev_attr_in6_beep.dev_attr.attr,
1488 &sensor_dev_attr_in7_beep.dev_attr.attr,
1492 static struct attribute *it87_attributes_temp_beep[] = {
1493 &sensor_dev_attr_temp1_beep.dev_attr.attr,
1494 &sensor_dev_attr_temp2_beep.dev_attr.attr,
1495 &sensor_dev_attr_temp3_beep.dev_attr.attr,
1498 static struct attribute *it87_attributes_fan[5][3+1] = { {
1499 &sensor_dev_attr_fan1_input.dev_attr.attr,
1500 &sensor_dev_attr_fan1_min.dev_attr.attr,
1501 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1504 &sensor_dev_attr_fan2_input.dev_attr.attr,
1505 &sensor_dev_attr_fan2_min.dev_attr.attr,
1506 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1509 &sensor_dev_attr_fan3_input.dev_attr.attr,
1510 &sensor_dev_attr_fan3_min.dev_attr.attr,
1511 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1514 &sensor_dev_attr_fan4_input.dev_attr.attr,
1515 &sensor_dev_attr_fan4_min.dev_attr.attr,
1516 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1519 &sensor_dev_attr_fan5_input.dev_attr.attr,
1520 &sensor_dev_attr_fan5_min.dev_attr.attr,
1521 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1525 static const struct attribute_group it87_group_fan[5] = {
1526 { .attrs = it87_attributes_fan[0] },
1527 { .attrs = it87_attributes_fan[1] },
1528 { .attrs = it87_attributes_fan[2] },
1529 { .attrs = it87_attributes_fan[3] },
1530 { .attrs = it87_attributes_fan[4] },
1533 static const struct attribute *it87_attributes_fan_div[] = {
1534 &sensor_dev_attr_fan1_div.dev_attr.attr,
1535 &sensor_dev_attr_fan2_div.dev_attr.attr,
1536 &sensor_dev_attr_fan3_div.dev_attr.attr,
1539 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1540 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1541 &sensor_dev_attr_pwm1.dev_attr.attr,
1542 &dev_attr_pwm1_freq.attr,
1543 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1546 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1547 &sensor_dev_attr_pwm2.dev_attr.attr,
1548 &dev_attr_pwm2_freq.attr,
1549 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1552 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1553 &sensor_dev_attr_pwm3.dev_attr.attr,
1554 &dev_attr_pwm3_freq.attr,
1555 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1559 static const struct attribute_group it87_group_pwm[3] = {
1560 { .attrs = it87_attributes_pwm[0] },
1561 { .attrs = it87_attributes_pwm[1] },
1562 { .attrs = it87_attributes_pwm[2] },
1565 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1566 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1567 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1568 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1569 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1570 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1571 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1572 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1573 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1574 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1577 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1578 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1579 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1580 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1581 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1582 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1583 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1584 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1585 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1588 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1589 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1590 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1591 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1592 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1593 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1594 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1595 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1596 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1600 static const struct attribute_group it87_group_autopwm[3] = {
1601 { .attrs = it87_attributes_autopwm[0] },
1602 { .attrs = it87_attributes_autopwm[1] },
1603 { .attrs = it87_attributes_autopwm[2] },
1606 static struct attribute *it87_attributes_fan_beep[] = {
1607 &sensor_dev_attr_fan1_beep.dev_attr.attr,
1608 &sensor_dev_attr_fan2_beep.dev_attr.attr,
1609 &sensor_dev_attr_fan3_beep.dev_attr.attr,
1610 &sensor_dev_attr_fan4_beep.dev_attr.attr,
1611 &sensor_dev_attr_fan5_beep.dev_attr.attr,
1614 static struct attribute *it87_attributes_vid[] = {
1616 &dev_attr_cpu0_vid.attr,
1620 static const struct attribute_group it87_group_vid = {
1621 .attrs = it87_attributes_vid,
1624 static struct attribute *it87_attributes_label[] = {
1625 &sensor_dev_attr_in3_label.dev_attr.attr,
1626 &sensor_dev_attr_in7_label.dev_attr.attr,
1627 &sensor_dev_attr_in8_label.dev_attr.attr,
1631 static const struct attribute_group it87_group_label = {
1632 .attrs = it87_attributes_label,
1635 /* SuperIO detection - will change isa_address if a chip is found */
1636 static int __init it87_find(unsigned short *address,
1637 struct it87_sio_data *sio_data)
1641 const char *board_vendor, *board_name;
1643 err = superio_enter();
1648 chip_type = force_id ? force_id : superio_inw(DEVID);
1650 switch (chip_type) {
1652 sio_data->type = it87;
1655 sio_data->type = it8712;
1659 sio_data->type = it8716;
1662 sio_data->type = it8718;
1665 sio_data->type = it8720;
1668 sio_data->type = it8721;
1671 sio_data->type = it8728;
1674 sio_data->type = it8782;
1677 sio_data->type = it8783;
1679 case 0xffff: /* No device at all */
1682 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1686 superio_select(PME);
1687 if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1688 pr_info("Device not activated, skipping\n");
1692 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1693 if (*address == 0) {
1694 pr_info("Base address not set, skipping\n");
1699 sio_data->revision = superio_inb(DEVREV) & 0x0f;
1700 pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1701 chip_type, *address, sio_data->revision);
1703 /* in8 (Vbat) is always internal */
1704 sio_data->internal = (1 << 2);
1706 /* Read GPIO config and VID value from LDN 7 (GPIO) */
1707 if (sio_data->type == it87) {
1708 /* The IT8705F doesn't have VID pins at all */
1709 sio_data->skip_vid = 1;
1711 /* The IT8705F has a different LD number for GPIO */
1713 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1714 } else if (sio_data->type == it8783) {
1715 int reg25, reg27, reg2A, reg2C, regEF;
1717 sio_data->skip_vid = 1; /* No VID */
1719 superio_select(GPIO);
1721 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1722 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1723 reg2A = superio_inb(IT87_SIO_PINX1_REG);
1724 reg2C = superio_inb(IT87_SIO_PINX2_REG);
1725 regEF = superio_inb(IT87_SIO_SPI_REG);
1727 /* Check if fan3 is there or not */
1728 if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2)))
1729 sio_data->skip_fan |= (1 << 2);
1730 if ((reg25 & (1 << 4))
1731 || (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
1732 sio_data->skip_pwm |= (1 << 2);
1734 /* Check if fan2 is there or not */
1735 if (reg27 & (1 << 7))
1736 sio_data->skip_fan |= (1 << 1);
1737 if (reg27 & (1 << 3))
1738 sio_data->skip_pwm |= (1 << 1);
1741 if ((reg27 & (1 << 0)) || (reg2C & (1 << 2)))
1742 sio_data->skip_in |= (1 << 5); /* No VIN5 */
1745 if (reg27 & (1 << 1))
1746 sio_data->skip_in |= (1 << 6); /* No VIN6 */
1750 * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1752 if (reg27 & (1 << 2)) {
1754 * The data sheet is a bit unclear regarding the
1755 * internal voltage divider for VCCH5V. It says
1756 * "This bit enables and switches VIN7 (pin 91) to the
1757 * internal voltage divider for VCCH5V".
1758 * This is different to other chips, where the internal
1759 * voltage divider would connect VIN7 to an internal
1760 * voltage source. Maybe that is the case here as well.
1762 * Since we don't know for sure, re-route it if that is
1763 * not the case, and ask the user to report if the
1764 * resulting voltage is sane.
1766 if (!(reg2C & (1 << 1))) {
1768 superio_outb(IT87_SIO_PINX2_REG, reg2C);
1769 pr_notice("Routing internal VCCH5V to in7.\n");
1771 pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1772 pr_notice("Please report if it displays a reasonable voltage.\n");
1775 if (reg2C & (1 << 0))
1776 sio_data->internal |= (1 << 0);
1777 if (reg2C & (1 << 1))
1778 sio_data->internal |= (1 << 1);
1780 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1786 superio_select(GPIO);
1788 reg = superio_inb(IT87_SIO_GPIO3_REG);
1789 if (sio_data->type == it8721 || sio_data->type == it8728 ||
1790 sio_data->type == it8782) {
1792 * IT8721F/IT8758E, and IT8782F don't have VID pins
1793 * at all, not sure about the IT8728F.
1795 sio_data->skip_vid = 1;
1797 /* We need at least 4 VID pins */
1799 pr_info("VID is disabled (pins used for GPIO)\n");
1800 sio_data->skip_vid = 1;
1804 /* Check if fan3 is there or not */
1806 sio_data->skip_pwm |= (1 << 2);
1808 sio_data->skip_fan |= (1 << 2);
1810 /* Check if fan2 is there or not */
1811 reg = superio_inb(IT87_SIO_GPIO5_REG);
1813 sio_data->skip_pwm |= (1 << 1);
1815 sio_data->skip_fan |= (1 << 1);
1817 if ((sio_data->type == it8718 || sio_data->type == it8720)
1818 && !(sio_data->skip_vid))
1819 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1821 reg = superio_inb(IT87_SIO_PINX2_REG);
1823 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1826 * The IT8720F has no VIN7 pin, so VCCH should always be
1827 * routed internally to VIN7 with an internal divider.
1828 * Curiously, there still is a configuration bit to control
1829 * this, which means it can be set incorrectly. And even
1830 * more curiously, many boards out there are improperly
1831 * configured, even though the IT8720F datasheet claims
1832 * that the internal routing of VCCH to VIN7 is the default
1833 * setting. So we force the internal routing in this case.
1835 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1836 * If UART6 is enabled, re-route VIN7 to the internal divider
1837 * if that is not already the case.
1839 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1841 superio_outb(IT87_SIO_PINX2_REG, reg);
1842 pr_notice("Routing internal VCCH to in7\n");
1845 sio_data->internal |= (1 << 0);
1846 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1847 sio_data->type == it8728)
1848 sio_data->internal |= (1 << 1);
1851 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1852 * While VIN7 can be routed to the internal voltage divider,
1853 * VIN5 and VIN6 are not available if UART6 is enabled.
1855 * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1856 * is the temperature source. Since we can not read the
1857 * temperature source here, skip_temp is preliminary.
1860 sio_data->skip_in |= (1 << 5) | (1 << 6);
1861 sio_data->skip_temp |= (1 << 2);
1864 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1866 if (sio_data->beep_pin)
1867 pr_info("Beeping is supported\n");
1869 /* Disable specific features based on DMI strings */
1870 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1871 board_name = dmi_get_system_info(DMI_BOARD_NAME);
1872 if (board_vendor && board_name) {
1873 if (strcmp(board_vendor, "nVIDIA") == 0
1874 && strcmp(board_name, "FN68PT") == 0) {
1876 * On the Shuttle SN68PT, FAN_CTL2 is apparently not
1877 * connected to a fan, but to something else. One user
1878 * has reported instant system power-off when changing
1879 * the PWM2 duty cycle, so we disable it.
1880 * I use the board name string as the trigger in case
1881 * the same board is ever used in other systems.
1883 pr_info("Disabling pwm2 due to hardware constraints\n");
1884 sio_data->skip_pwm = (1 << 1);
1893 static void it87_remove_files(struct device *dev)
1895 struct it87_data *data = platform_get_drvdata(pdev);
1896 struct it87_sio_data *sio_data = dev->platform_data;
1899 sysfs_remove_group(&dev->kobj, &it87_group);
1900 for (i = 0; i < 9; i++) {
1901 if (sio_data->skip_in & (1 << i))
1903 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
1904 if (it87_attributes_in_beep[i])
1905 sysfs_remove_file(&dev->kobj,
1906 it87_attributes_in_beep[i]);
1908 for (i = 0; i < 3; i++) {
1909 if (!(data->has_temp & (1 << i)))
1911 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
1912 if (has_temp_offset(data))
1913 sysfs_remove_file(&dev->kobj,
1914 it87_attributes_temp_offset[i]);
1915 if (sio_data->beep_pin)
1916 sysfs_remove_file(&dev->kobj,
1917 it87_attributes_temp_beep[i]);
1919 for (i = 0; i < 5; i++) {
1920 if (!(data->has_fan & (1 << i)))
1922 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
1923 if (sio_data->beep_pin)
1924 sysfs_remove_file(&dev->kobj,
1925 it87_attributes_fan_beep[i]);
1926 if (i < 3 && !has_16bit_fans(data))
1927 sysfs_remove_file(&dev->kobj,
1928 it87_attributes_fan_div[i]);
1930 for (i = 0; i < 3; i++) {
1931 if (sio_data->skip_pwm & (1 << 0))
1933 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
1934 if (has_old_autopwm(data))
1935 sysfs_remove_group(&dev->kobj,
1936 &it87_group_autopwm[i]);
1938 if (!sio_data->skip_vid)
1939 sysfs_remove_group(&dev->kobj, &it87_group_vid);
1940 sysfs_remove_group(&dev->kobj, &it87_group_label);
1943 static int it87_probe(struct platform_device *pdev)
1945 struct it87_data *data;
1946 struct resource *res;
1947 struct device *dev = &pdev->dev;
1948 struct it87_sio_data *sio_data = dev->platform_data;
1950 int enable_pwm_interface;
1951 int fan_beep_need_rw;
1953 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1954 if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
1956 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1957 (unsigned long)res->start,
1958 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
1962 data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
1966 data->addr = res->start;
1967 data->type = sio_data->type;
1968 data->features = it87_devices[sio_data->type].features;
1969 data->name = it87_devices[sio_data->type].name;
1971 * IT8705F Datasheet 0.4.1, 3h == Version G.
1972 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
1973 * These are the first revisions with 16-bit tachometer support.
1975 switch (data->type) {
1977 if (sio_data->revision >= 0x03) {
1978 data->features &= ~FEAT_OLD_AUTOPWM;
1979 data->features |= FEAT_16BIT_FANS;
1983 if (sio_data->revision >= 0x08) {
1984 data->features &= ~FEAT_OLD_AUTOPWM;
1985 data->features |= FEAT_16BIT_FANS;
1992 /* Now, we do the remaining detection. */
1993 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
1994 || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
1997 platform_set_drvdata(pdev, data);
1999 mutex_init(&data->update_lock);
2001 /* Check PWM configuration */
2002 enable_pwm_interface = it87_check_pwm(dev);
2004 /* Starting with IT8721F, we handle scaling of internal voltages */
2005 if (has_12mv_adc(data)) {
2006 if (sio_data->internal & (1 << 0))
2007 data->in_scaled |= (1 << 3); /* in3 is AVCC */
2008 if (sio_data->internal & (1 << 1))
2009 data->in_scaled |= (1 << 7); /* in7 is VSB */
2010 if (sio_data->internal & (1 << 2))
2011 data->in_scaled |= (1 << 8); /* in8 is Vbat */
2012 } else if (sio_data->type == it8782 || sio_data->type == it8783) {
2013 if (sio_data->internal & (1 << 0))
2014 data->in_scaled |= (1 << 3); /* in3 is VCC5V */
2015 if (sio_data->internal & (1 << 1))
2016 data->in_scaled |= (1 << 7); /* in7 is VCCH5V */
2019 data->has_temp = 0x07;
2020 if (sio_data->skip_temp & (1 << 2)) {
2021 if (sio_data->type == it8782
2022 && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2023 data->has_temp &= ~(1 << 2);
2026 /* Initialize the IT87 chip */
2027 it87_init_device(pdev);
2029 /* Register sysfs hooks */
2030 err = sysfs_create_group(&dev->kobj, &it87_group);
2034 for (i = 0; i < 9; i++) {
2035 if (sio_data->skip_in & (1 << i))
2037 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2040 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2041 err = sysfs_create_file(&dev->kobj,
2042 it87_attributes_in_beep[i]);
2048 for (i = 0; i < 3; i++) {
2049 if (!(data->has_temp & (1 << i)))
2051 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2054 if (has_temp_offset(data)) {
2055 err = sysfs_create_file(&dev->kobj,
2056 it87_attributes_temp_offset[i]);
2060 if (sio_data->beep_pin) {
2061 err = sysfs_create_file(&dev->kobj,
2062 it87_attributes_temp_beep[i]);
2068 /* Do not create fan files for disabled fans */
2069 fan_beep_need_rw = 1;
2070 for (i = 0; i < 5; i++) {
2071 if (!(data->has_fan & (1 << i)))
2073 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2077 if (i < 3 && !has_16bit_fans(data)) {
2078 err = sysfs_create_file(&dev->kobj,
2079 it87_attributes_fan_div[i]);
2084 if (sio_data->beep_pin) {
2085 err = sysfs_create_file(&dev->kobj,
2086 it87_attributes_fan_beep[i]);
2089 if (!fan_beep_need_rw)
2093 * As we have a single beep enable bit for all fans,
2094 * only the first enabled fan has a writable attribute
2097 if (sysfs_chmod_file(&dev->kobj,
2098 it87_attributes_fan_beep[i],
2100 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2102 fan_beep_need_rw = 0;
2106 if (enable_pwm_interface) {
2107 for (i = 0; i < 3; i++) {
2108 if (sio_data->skip_pwm & (1 << i))
2110 err = sysfs_create_group(&dev->kobj,
2111 &it87_group_pwm[i]);
2115 if (!has_old_autopwm(data))
2117 err = sysfs_create_group(&dev->kobj,
2118 &it87_group_autopwm[i]);
2124 if (!sio_data->skip_vid) {
2125 data->vrm = vid_which_vrm();
2126 /* VID reading from Super-I/O config space if available */
2127 data->vid = sio_data->vid_value;
2128 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2133 /* Export labels for internal sensors */
2134 for (i = 0; i < 3; i++) {
2135 if (!(sio_data->internal & (1 << i)))
2137 err = sysfs_create_file(&dev->kobj,
2138 it87_attributes_label[i]);
2143 data->hwmon_dev = hwmon_device_register(dev);
2144 if (IS_ERR(data->hwmon_dev)) {
2145 err = PTR_ERR(data->hwmon_dev);
2152 it87_remove_files(dev);
2156 static int it87_remove(struct platform_device *pdev)
2158 struct it87_data *data = platform_get_drvdata(pdev);
2160 hwmon_device_unregister(data->hwmon_dev);
2161 it87_remove_files(&pdev->dev);
2167 * Must be called with data->update_lock held, except during initialization.
2168 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2169 * would slow down the IT87 access and should not be necessary.
2171 static int it87_read_value(struct it87_data *data, u8 reg)
2173 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2174 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2178 * Must be called with data->update_lock held, except during initialization.
2179 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2180 * would slow down the IT87 access and should not be necessary.
2182 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2184 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2185 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2188 /* Return 1 if and only if the PWM interface is safe to use */
2189 static int it87_check_pwm(struct device *dev)
2191 struct it87_data *data = dev_get_drvdata(dev);
2193 * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2194 * and polarity set to active low is sign that this is the case so we
2195 * disable pwm control to protect the user.
2197 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2198 if ((tmp & 0x87) == 0) {
2199 if (fix_pwm_polarity) {
2201 * The user asks us to attempt a chip reconfiguration.
2202 * This means switching to active high polarity and
2203 * inverting all fan speed values.
2208 for (i = 0; i < 3; i++)
2209 pwm[i] = it87_read_value(data,
2213 * If any fan is in automatic pwm mode, the polarity
2214 * might be correct, as suspicious as it seems, so we
2215 * better don't change anything (but still disable the
2218 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2220 "Reconfiguring PWM to active high polarity\n");
2221 it87_write_value(data, IT87_REG_FAN_CTL,
2223 for (i = 0; i < 3; i++)
2224 it87_write_value(data,
2231 "PWM configuration is too broken to be fixed\n");
2235 "Detected broken BIOS defaults, disabling PWM interface\n");
2237 } else if (fix_pwm_polarity) {
2239 "PWM configuration looks sane, won't touch\n");
2245 /* Called when we have found a new IT87. */
2246 static void it87_init_device(struct platform_device *pdev)
2248 struct it87_sio_data *sio_data = pdev->dev.platform_data;
2249 struct it87_data *data = platform_get_drvdata(pdev);
2254 * For each PWM channel:
2255 * - If it is in automatic mode, setting to manual mode should set
2256 * the fan to full speed by default.
2257 * - If it is in manual mode, we need a mapping to temperature
2258 * channels to use when later setting to automatic mode later.
2259 * Use a 1:1 mapping by default (we are clueless.)
2260 * In both cases, the value can (and should) be changed by the user
2261 * prior to switching to a different mode.
2262 * Note that this is no longer needed for the IT8721F and later, as
2263 * these have separate registers for the temperature mapping and the
2264 * manual duty cycle.
2266 for (i = 0; i < 3; i++) {
2267 data->pwm_temp_map[i] = i;
2268 data->pwm_duty[i] = 0x7f; /* Full speed */
2269 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
2273 * Some chips seem to have default value 0xff for all limit
2274 * registers. For low voltage limits it makes no sense and triggers
2275 * alarms, so change to 0 instead. For high temperature limits, it
2276 * means -1 degree C, which surprisingly doesn't trigger an alarm,
2277 * but is still confusing, so change to 127 degrees C.
2279 for (i = 0; i < 8; i++) {
2280 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2282 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2284 for (i = 0; i < 3; i++) {
2285 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2287 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2291 * Temperature channels are not forcibly enabled, as they can be
2292 * set to two different sensor types and we can't guess which one
2293 * is correct for a given system. These channels can be enabled at
2294 * run-time through the temp{1-3}_type sysfs accessors if needed.
2297 /* Check if voltage monitors are reset manually or by some reason */
2298 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2299 if ((tmp & 0xff) == 0) {
2300 /* Enable all voltage monitors */
2301 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2304 /* Check if tachometers are reset manually or by some reason */
2305 mask = 0x70 & ~(sio_data->skip_fan << 4);
2306 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2307 if ((data->fan_main_ctrl & mask) == 0) {
2308 /* Enable all fan tachometers */
2309 data->fan_main_ctrl |= mask;
2310 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2311 data->fan_main_ctrl);
2313 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2315 /* Set tachometers to 16-bit mode if needed */
2316 if (has_16bit_fans(data)) {
2317 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2318 if (~tmp & 0x07 & data->has_fan) {
2320 "Setting fan1-3 to 16-bit mode\n");
2321 it87_write_value(data, IT87_REG_FAN_16BIT,
2324 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2325 if (data->type != it87 && data->type != it8782 &&
2326 data->type != it8783) {
2328 data->has_fan |= (1 << 3); /* fan4 enabled */
2330 data->has_fan |= (1 << 4); /* fan5 enabled */
2334 /* Fan input pins may be used for alternative functions */
2335 data->has_fan &= ~sio_data->skip_fan;
2337 /* Start monitoring */
2338 it87_write_value(data, IT87_REG_CONFIG,
2339 (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2340 | (update_vbat ? 0x41 : 0x01));
2343 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2345 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2346 if (has_newer_autopwm(data)) {
2347 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2348 data->pwm_duty[nr] = it87_read_value(data,
2349 IT87_REG_PWM_DUTY(nr));
2351 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
2352 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2353 else /* Manual mode */
2354 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2357 if (has_old_autopwm(data)) {
2360 for (i = 0; i < 5 ; i++)
2361 data->auto_temp[nr][i] = it87_read_value(data,
2362 IT87_REG_AUTO_TEMP(nr, i));
2363 for (i = 0; i < 3 ; i++)
2364 data->auto_pwm[nr][i] = it87_read_value(data,
2365 IT87_REG_AUTO_PWM(nr, i));
2369 static struct it87_data *it87_update_device(struct device *dev)
2371 struct it87_data *data = dev_get_drvdata(dev);
2374 mutex_lock(&data->update_lock);
2376 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2380 * Cleared after each update, so reenable. Value
2381 * returned by this read will be previous value
2383 it87_write_value(data, IT87_REG_CONFIG,
2384 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2386 for (i = 0; i <= 7; i++) {
2388 it87_read_value(data, IT87_REG_VIN(i));
2390 it87_read_value(data, IT87_REG_VIN_MIN(i));
2392 it87_read_value(data, IT87_REG_VIN_MAX(i));
2394 /* in8 (battery) has no limit registers */
2395 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2397 for (i = 0; i < 5; i++) {
2398 /* Skip disabled fans */
2399 if (!(data->has_fan & (1 << i)))
2403 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2404 data->fan[i][0] = it87_read_value(data,
2406 /* Add high byte if in 16-bit mode */
2407 if (has_16bit_fans(data)) {
2408 data->fan[i][0] |= it87_read_value(data,
2409 IT87_REG_FANX[i]) << 8;
2410 data->fan[i][1] |= it87_read_value(data,
2411 IT87_REG_FANX_MIN[i]) << 8;
2414 for (i = 0; i < 3; i++) {
2415 if (!(data->has_temp & (1 << i)))
2418 it87_read_value(data, IT87_REG_TEMP(i));
2420 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2422 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2423 if (has_temp_offset(data))
2425 it87_read_value(data,
2426 IT87_REG_TEMP_OFFSET[i]);
2429 /* Newer chips don't have clock dividers */
2430 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2431 i = it87_read_value(data, IT87_REG_FAN_DIV);
2432 data->fan_div[0] = i & 0x07;
2433 data->fan_div[1] = (i >> 3) & 0x07;
2434 data->fan_div[2] = (i & 0x40) ? 3 : 1;
2438 it87_read_value(data, IT87_REG_ALARM1) |
2439 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2440 (it87_read_value(data, IT87_REG_ALARM3) << 16);
2441 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2443 data->fan_main_ctrl = it87_read_value(data,
2444 IT87_REG_FAN_MAIN_CTRL);
2445 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2446 for (i = 0; i < 3; i++)
2447 it87_update_pwm_ctrl(data, i);
2449 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2451 * The IT8705F does not have VID capability.
2452 * The IT8718F and later don't use IT87_REG_VID for the
2455 if (data->type == it8712 || data->type == it8716) {
2456 data->vid = it87_read_value(data, IT87_REG_VID);
2458 * The older IT8712F revisions had only 5 VID pins,
2459 * but we assume it is always safe to read 6 bits.
2463 data->last_updated = jiffies;
2467 mutex_unlock(&data->update_lock);
2472 static int __init it87_device_add(unsigned short address,
2473 const struct it87_sio_data *sio_data)
2475 struct resource res = {
2476 .start = address + IT87_EC_OFFSET,
2477 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2479 .flags = IORESOURCE_IO,
2483 err = acpi_check_resource_conflict(&res);
2487 pdev = platform_device_alloc(DRVNAME, address);
2490 pr_err("Device allocation failed\n");
2494 err = platform_device_add_resources(pdev, &res, 1);
2496 pr_err("Device resource addition failed (%d)\n", err);
2497 goto exit_device_put;
2500 err = platform_device_add_data(pdev, sio_data,
2501 sizeof(struct it87_sio_data));
2503 pr_err("Platform data allocation failed\n");
2504 goto exit_device_put;
2507 err = platform_device_add(pdev);
2509 pr_err("Device addition failed (%d)\n", err);
2510 goto exit_device_put;
2516 platform_device_put(pdev);
2521 static int __init sm_it87_init(void)
2524 unsigned short isa_address = 0;
2525 struct it87_sio_data sio_data;
2527 memset(&sio_data, 0, sizeof(struct it87_sio_data));
2528 err = it87_find(&isa_address, &sio_data);
2531 err = platform_driver_register(&it87_driver);
2535 err = it87_device_add(isa_address, &sio_data);
2537 platform_driver_unregister(&it87_driver);
2544 static void __exit sm_it87_exit(void)
2546 platform_device_unregister(pdev);
2547 platform_driver_unregister(&it87_driver);
2551 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>");
2552 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2553 module_param(update_vbat, bool, 0);
2554 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2555 module_param(fix_pwm_polarity, bool, 0);
2556 MODULE_PARM_DESC(fix_pwm_polarity,
2557 "Force PWM polarity to active high (DANGEROUS)");
2558 MODULE_LICENSE("GPL");
2560 module_init(sm_it87_init);
2561 module_exit(sm_it87_exit);