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 {
237 #define FEAT_12MV_ADC (1 << 0)
238 #define FEAT_NEWER_AUTOPWM (1 << 1)
239 #define FEAT_OLD_AUTOPWM (1 << 2)
240 #define FEAT_16BIT_FANS (1 << 3)
241 #define FEAT_TEMP_OFFSET (1 << 4)
242 #define FEAT_TEMP_PECI (1 << 5)
244 static const struct it87_devices it87_devices[] = {
247 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */
251 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */
255 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
259 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
263 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
267 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
268 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
273 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
274 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
279 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
283 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
287 #define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS)
288 #define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC)
289 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
290 #define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM)
291 #define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET)
292 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
293 ((data)->peci_mask & (1 << nr)))
295 struct it87_sio_data {
297 /* Values read from Super-I/O config space */
301 u8 internal; /* Internal sensors can be labeled */
302 /* Features skipped based on config or DMI */
311 * For each registered chip, we need to keep some data in memory.
312 * The structure is dynamically allocated.
315 struct device *hwmon_dev;
322 struct mutex update_lock;
323 char valid; /* !=0 if following fields are valid */
324 unsigned long last_updated; /* In jiffies */
326 u16 in_scaled; /* Internal voltage sensors are scaled */
327 u8 in[9][3]; /* [nr][0]=in, [1]=min, [2]=max */
328 u8 has_fan; /* Bitfield, fans enabled */
329 u16 fan[5][2]; /* Register values, [nr][0]=fan, [1]=min */
330 u8 has_temp; /* Bitfield, temp sensors enabled */
331 s8 temp[3][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
332 u8 sensor; /* Register value */
333 u8 fan_div[3]; /* Register encoding, shifted right */
334 u8 vid; /* Register encoding, combined */
336 u32 alarms; /* Register encoding, combined */
337 u8 beeps; /* Register encoding */
338 u8 fan_main_ctrl; /* Register value */
339 u8 fan_ctl; /* Register value */
342 * The following 3 arrays correspond to the same registers up to
343 * the IT8720F. The meaning of bits 6-0 depends on the value of bit
344 * 7, and we want to preserve settings on mode changes, so we have
345 * to track all values separately.
346 * Starting with the IT8721F, the manual PWM duty cycles are stored
347 * in separate registers (8-bit values), so the separate tracking
348 * is no longer needed, but it is still done to keep the driver
351 u8 pwm_ctrl[3]; /* Register value */
352 u8 pwm_duty[3]; /* Manual PWM value set by user */
353 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */
355 /* Automatic fan speed control registers */
356 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */
357 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
360 static int adc_lsb(const struct it87_data *data, int nr)
362 int lsb = has_12mv_adc(data) ? 12 : 16;
363 if (data->in_scaled & (1 << nr))
368 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
370 val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
371 return SENSORS_LIMIT(val, 0, 255);
374 static int in_from_reg(const struct it87_data *data, int nr, int val)
376 return val * adc_lsb(data, nr);
379 static inline u8 FAN_TO_REG(long rpm, int div)
383 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
384 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
388 static inline u16 FAN16_TO_REG(long rpm)
392 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
395 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
396 1350000 / ((val) * (div)))
397 /* The divider is fixed to 2 in 16-bit mode */
398 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
399 1350000 / ((val) * 2))
401 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
402 ((val) + 500) / 1000), -128, 127))
403 #define TEMP_FROM_REG(val) ((val) * 1000)
405 static u8 pwm_to_reg(const struct it87_data *data, long val)
407 if (has_newer_autopwm(data))
413 static int pwm_from_reg(const struct it87_data *data, u8 reg)
415 if (has_newer_autopwm(data))
418 return (reg & 0x7f) << 1;
422 static int DIV_TO_REG(int val)
425 while (answer < 7 && (val >>= 1))
429 #define DIV_FROM_REG(val) (1 << (val))
431 static const unsigned int pwm_freq[8] = {
442 static int it87_probe(struct platform_device *pdev);
443 static int it87_remove(struct platform_device *pdev);
445 static int it87_read_value(struct it87_data *data, u8 reg);
446 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
447 static struct it87_data *it87_update_device(struct device *dev);
448 static int it87_check_pwm(struct device *dev);
449 static void it87_init_device(struct platform_device *pdev);
452 static struct platform_driver it87_driver = {
454 .owner = THIS_MODULE,
458 .remove = it87_remove,
461 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
464 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
466 int index = sattr->index;
468 struct it87_data *data = it87_update_device(dev);
469 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
472 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
473 const char *buf, size_t count)
475 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
477 int index = sattr->index;
479 struct it87_data *data = dev_get_drvdata(dev);
482 if (kstrtoul(buf, 10, &val) < 0)
485 mutex_lock(&data->update_lock);
486 data->in[nr][index] = in_to_reg(data, nr, val);
487 it87_write_value(data,
488 index == 1 ? IT87_REG_VIN_MIN(nr)
489 : IT87_REG_VIN_MAX(nr),
490 data->in[nr][index]);
491 mutex_unlock(&data->update_lock);
495 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
496 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
498 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
501 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
502 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
504 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
507 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
508 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
510 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
513 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
514 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
516 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
519 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
520 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
522 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
525 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
526 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
528 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
531 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
532 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
534 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
537 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
538 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
540 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
543 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
546 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
549 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
551 int index = sattr->index;
552 struct it87_data *data = it87_update_device(dev);
554 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
557 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
558 const char *buf, size_t count)
560 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
562 int index = sattr->index;
563 struct it87_data *data = dev_get_drvdata(dev);
567 if (kstrtol(buf, 10, &val) < 0)
570 mutex_lock(&data->update_lock);
575 reg = IT87_REG_TEMP_LOW(nr);
578 reg = IT87_REG_TEMP_HIGH(nr);
581 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
582 if (!(regval & 0x80)) {
584 it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
587 reg = IT87_REG_TEMP_OFFSET[nr];
591 data->temp[nr][index] = TEMP_TO_REG(val);
592 it87_write_value(data, reg, data->temp[nr][index]);
593 mutex_unlock(&data->update_lock);
597 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
598 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
600 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
602 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
604 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
605 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
607 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
609 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
611 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
612 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
614 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
616 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
619 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
622 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
623 int nr = sensor_attr->index;
624 struct it87_data *data = it87_update_device(dev);
625 u8 reg = data->sensor; /* In case value is updated while used */
627 if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
628 return sprintf(buf, "6\n"); /* Intel PECI */
630 return sprintf(buf, "3\n"); /* thermal diode */
632 return sprintf(buf, "4\n"); /* thermistor */
633 return sprintf(buf, "0\n"); /* disabled */
636 static ssize_t set_temp_type(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 (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
654 if (val == 2) { /* backwards compatibility */
656 "Sensor type 2 is deprecated, please use 4 instead\n");
659 /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
664 else if (has_temp_peci(data, nr) && val == 6)
665 reg |= (nr + 1) << 6;
669 mutex_lock(&data->update_lock);
671 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
672 data->valid = 0; /* Force cache refresh */
673 mutex_unlock(&data->update_lock);
677 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
679 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
681 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
686 static int pwm_mode(const struct it87_data *data, int nr)
688 int ctrl = data->fan_main_ctrl & (1 << nr);
690 if (ctrl == 0) /* Full speed */
692 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
694 else /* Manual mode */
698 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
701 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
703 int index = sattr->index;
705 struct it87_data *data = it87_update_device(dev);
707 speed = has_16bit_fans(data) ?
708 FAN16_FROM_REG(data->fan[nr][index]) :
709 FAN_FROM_REG(data->fan[nr][index],
710 DIV_FROM_REG(data->fan_div[nr]));
711 return sprintf(buf, "%d\n", speed);
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]);
751 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
752 const char *buf, size_t count)
754 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
756 int index = sattr->index;
758 struct it87_data *data = dev_get_drvdata(dev);
762 if (kstrtol(buf, 10, &val) < 0)
765 mutex_lock(&data->update_lock);
767 if (has_16bit_fans(data)) {
768 data->fan[nr][index] = FAN16_TO_REG(val);
769 it87_write_value(data, IT87_REG_FAN_MIN[nr],
770 data->fan[nr][index] & 0xff);
771 it87_write_value(data, IT87_REG_FANX_MIN[nr],
772 data->fan[nr][index] >> 8);
774 reg = it87_read_value(data, IT87_REG_FAN_DIV);
777 data->fan_div[nr] = reg & 0x07;
780 data->fan_div[nr] = (reg >> 3) & 0x07;
783 data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
786 data->fan[nr][index] =
787 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
788 it87_write_value(data, IT87_REG_FAN_MIN[nr],
789 data->fan[nr][index]);
792 mutex_unlock(&data->update_lock);
796 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
797 const char *buf, size_t count)
799 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
800 int nr = sensor_attr->index;
802 struct it87_data *data = dev_get_drvdata(dev);
807 if (kstrtoul(buf, 10, &val) < 0)
810 mutex_lock(&data->update_lock);
811 old = it87_read_value(data, IT87_REG_FAN_DIV);
813 /* Save fan min limit */
814 min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
819 data->fan_div[nr] = DIV_TO_REG(val);
823 data->fan_div[nr] = 1;
825 data->fan_div[nr] = 3;
828 val |= (data->fan_div[0] & 0x07);
829 val |= (data->fan_div[1] & 0x07) << 3;
830 if (data->fan_div[2] == 3)
832 it87_write_value(data, IT87_REG_FAN_DIV, val);
834 /* Restore fan min limit */
835 data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
836 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
838 mutex_unlock(&data->update_lock);
842 /* Returns 0 if OK, -EINVAL otherwise */
843 static int check_trip_points(struct device *dev, int nr)
845 const struct it87_data *data = dev_get_drvdata(dev);
848 if (has_old_autopwm(data)) {
849 for (i = 0; i < 3; i++) {
850 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
853 for (i = 0; i < 2; i++) {
854 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
861 "Inconsistent trip points, not switching to automatic mode\n");
862 dev_err(dev, "Adjust the trip points and try again\n");
867 static ssize_t set_pwm_enable(struct device *dev,
868 struct device_attribute *attr, const char *buf, size_t count)
870 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
871 int nr = sensor_attr->index;
873 struct it87_data *data = dev_get_drvdata(dev);
876 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
879 /* Check trip points before switching to automatic mode */
881 if (check_trip_points(dev, nr) < 0)
885 mutex_lock(&data->update_lock);
889 /* make sure the fan is on when in on/off mode */
890 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
891 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
892 /* set on/off mode */
893 data->fan_main_ctrl &= ~(1 << nr);
894 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
895 data->fan_main_ctrl);
897 if (val == 1) /* Manual mode */
898 data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
899 data->pwm_temp_map[nr] :
901 else /* Automatic mode */
902 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
903 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
904 /* set SmartGuardian mode */
905 data->fan_main_ctrl |= (1 << nr);
906 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
907 data->fan_main_ctrl);
910 mutex_unlock(&data->update_lock);
913 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
914 const char *buf, size_t count)
916 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
917 int nr = sensor_attr->index;
919 struct it87_data *data = dev_get_drvdata(dev);
922 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
925 mutex_lock(&data->update_lock);
926 if (has_newer_autopwm(data)) {
928 * If we are in automatic mode, the PWM duty cycle register
929 * is read-only so we can't write the value.
931 if (data->pwm_ctrl[nr] & 0x80) {
932 mutex_unlock(&data->update_lock);
935 data->pwm_duty[nr] = pwm_to_reg(data, val);
936 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
939 data->pwm_duty[nr] = pwm_to_reg(data, val);
941 * If we are in manual mode, write the duty cycle immediately;
942 * otherwise, just store it for later use.
944 if (!(data->pwm_ctrl[nr] & 0x80)) {
945 data->pwm_ctrl[nr] = data->pwm_duty[nr];
946 it87_write_value(data, IT87_REG_PWM(nr),
950 mutex_unlock(&data->update_lock);
953 static ssize_t set_pwm_freq(struct device *dev,
954 struct device_attribute *attr, const char *buf, size_t count)
956 struct it87_data *data = dev_get_drvdata(dev);
960 if (kstrtoul(buf, 10, &val) < 0)
963 /* Search for the nearest available frequency */
964 for (i = 0; i < 7; i++) {
965 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
969 mutex_lock(&data->update_lock);
970 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
971 data->fan_ctl |= i << 4;
972 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
973 mutex_unlock(&data->update_lock);
977 static ssize_t show_pwm_temp_map(struct device *dev,
978 struct device_attribute *attr, char *buf)
980 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
981 int nr = sensor_attr->index;
983 struct it87_data *data = it87_update_device(dev);
986 if (data->pwm_temp_map[nr] < 3)
987 map = 1 << data->pwm_temp_map[nr];
989 map = 0; /* Should never happen */
990 return sprintf(buf, "%d\n", map);
992 static ssize_t set_pwm_temp_map(struct device *dev,
993 struct device_attribute *attr, const char *buf, size_t count)
995 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
996 int nr = sensor_attr->index;
998 struct it87_data *data = dev_get_drvdata(dev);
1003 * This check can go away if we ever support automatic fan speed
1004 * control on newer chips.
1006 if (!has_old_autopwm(data)) {
1007 dev_notice(dev, "Mapping change disabled for safety reasons\n");
1011 if (kstrtol(buf, 10, &val) < 0)
1028 mutex_lock(&data->update_lock);
1029 data->pwm_temp_map[nr] = reg;
1031 * If we are in automatic mode, write the temp mapping immediately;
1032 * otherwise, just store it for later use.
1034 if (data->pwm_ctrl[nr] & 0x80) {
1035 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1036 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1038 mutex_unlock(&data->update_lock);
1042 static ssize_t show_auto_pwm(struct device *dev,
1043 struct device_attribute *attr, char *buf)
1045 struct it87_data *data = it87_update_device(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;
1051 return sprintf(buf, "%d\n",
1052 pwm_from_reg(data, data->auto_pwm[nr][point]));
1055 static ssize_t set_auto_pwm(struct device *dev,
1056 struct device_attribute *attr, const char *buf, size_t count)
1058 struct it87_data *data = dev_get_drvdata(dev);
1059 struct sensor_device_attribute_2 *sensor_attr =
1060 to_sensor_dev_attr_2(attr);
1061 int nr = sensor_attr->nr;
1062 int point = sensor_attr->index;
1065 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1068 mutex_lock(&data->update_lock);
1069 data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1070 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1071 data->auto_pwm[nr][point]);
1072 mutex_unlock(&data->update_lock);
1076 static ssize_t show_auto_temp(struct device *dev,
1077 struct device_attribute *attr, char *buf)
1079 struct it87_data *data = it87_update_device(dev);
1080 struct sensor_device_attribute_2 *sensor_attr =
1081 to_sensor_dev_attr_2(attr);
1082 int nr = sensor_attr->nr;
1083 int point = sensor_attr->index;
1085 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1088 static ssize_t set_auto_temp(struct device *dev,
1089 struct device_attribute *attr, const char *buf, size_t count)
1091 struct it87_data *data = dev_get_drvdata(dev);
1092 struct sensor_device_attribute_2 *sensor_attr =
1093 to_sensor_dev_attr_2(attr);
1094 int nr = sensor_attr->nr;
1095 int point = sensor_attr->index;
1098 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1101 mutex_lock(&data->update_lock);
1102 data->auto_temp[nr][point] = TEMP_TO_REG(val);
1103 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1104 data->auto_temp[nr][point]);
1105 mutex_unlock(&data->update_lock);
1109 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1110 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1112 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1115 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1116 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1118 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1121 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1122 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1124 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1127 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1128 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1131 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1132 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1135 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1136 show_pwm_enable, set_pwm_enable, 0);
1137 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1138 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1139 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1140 show_pwm_temp_map, set_pwm_temp_map, 0);
1141 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1142 show_auto_pwm, set_auto_pwm, 0, 0);
1143 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1144 show_auto_pwm, set_auto_pwm, 0, 1);
1145 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1146 show_auto_pwm, set_auto_pwm, 0, 2);
1147 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1148 show_auto_pwm, NULL, 0, 3);
1149 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1150 show_auto_temp, set_auto_temp, 0, 1);
1151 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1152 show_auto_temp, set_auto_temp, 0, 0);
1153 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1154 show_auto_temp, set_auto_temp, 0, 2);
1155 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1156 show_auto_temp, set_auto_temp, 0, 3);
1157 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1158 show_auto_temp, set_auto_temp, 0, 4);
1160 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1161 show_pwm_enable, set_pwm_enable, 1);
1162 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1163 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1164 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1165 show_pwm_temp_map, set_pwm_temp_map, 1);
1166 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1167 show_auto_pwm, set_auto_pwm, 1, 0);
1168 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1169 show_auto_pwm, set_auto_pwm, 1, 1);
1170 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1171 show_auto_pwm, set_auto_pwm, 1, 2);
1172 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1173 show_auto_pwm, NULL, 1, 3);
1174 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1175 show_auto_temp, set_auto_temp, 1, 1);
1176 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1177 show_auto_temp, set_auto_temp, 1, 0);
1178 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1179 show_auto_temp, set_auto_temp, 1, 2);
1180 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1181 show_auto_temp, set_auto_temp, 1, 3);
1182 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1183 show_auto_temp, set_auto_temp, 1, 4);
1185 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1186 show_pwm_enable, set_pwm_enable, 2);
1187 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1188 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1189 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1190 show_pwm_temp_map, set_pwm_temp_map, 2);
1191 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1192 show_auto_pwm, set_auto_pwm, 2, 0);
1193 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1194 show_auto_pwm, set_auto_pwm, 2, 1);
1195 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1196 show_auto_pwm, set_auto_pwm, 2, 2);
1197 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1198 show_auto_pwm, NULL, 2, 3);
1199 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1200 show_auto_temp, set_auto_temp, 2, 1);
1201 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1202 show_auto_temp, set_auto_temp, 2, 0);
1203 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1204 show_auto_temp, set_auto_temp, 2, 2);
1205 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1206 show_auto_temp, set_auto_temp, 2, 3);
1207 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1208 show_auto_temp, set_auto_temp, 2, 4);
1211 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1214 struct it87_data *data = it87_update_device(dev);
1215 return sprintf(buf, "%u\n", data->alarms);
1217 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1219 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1222 int bitnr = to_sensor_dev_attr(attr)->index;
1223 struct it87_data *data = it87_update_device(dev);
1224 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1227 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1228 *attr, const char *buf, size_t count)
1230 struct it87_data *data = dev_get_drvdata(dev);
1234 if (kstrtol(buf, 10, &val) < 0 || val != 0)
1237 mutex_lock(&data->update_lock);
1238 config = it87_read_value(data, IT87_REG_CONFIG);
1243 it87_write_value(data, IT87_REG_CONFIG, config);
1244 /* Invalidate cache to force re-read */
1247 mutex_unlock(&data->update_lock);
1252 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1253 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1254 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1255 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1256 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1257 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1258 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1259 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1260 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1261 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1262 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1263 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1264 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1265 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1266 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1267 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1268 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1269 show_alarm, clear_intrusion, 4);
1271 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1274 int bitnr = to_sensor_dev_attr(attr)->index;
1275 struct it87_data *data = it87_update_device(dev);
1276 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1278 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1279 const char *buf, size_t count)
1281 int bitnr = to_sensor_dev_attr(attr)->index;
1282 struct it87_data *data = dev_get_drvdata(dev);
1285 if (kstrtol(buf, 10, &val) < 0
1286 || (val != 0 && val != 1))
1289 mutex_lock(&data->update_lock);
1290 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1292 data->beeps |= (1 << bitnr);
1294 data->beeps &= ~(1 << bitnr);
1295 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1296 mutex_unlock(&data->update_lock);
1300 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1301 show_beep, set_beep, 1);
1302 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1303 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1304 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1305 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1306 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1307 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1308 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1309 /* fanX_beep writability is set later */
1310 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1311 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1312 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1313 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1314 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1315 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1316 show_beep, set_beep, 2);
1317 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1318 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1320 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1323 struct it87_data *data = dev_get_drvdata(dev);
1324 return sprintf(buf, "%u\n", data->vrm);
1326 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1327 const char *buf, size_t count)
1329 struct it87_data *data = dev_get_drvdata(dev);
1332 if (kstrtoul(buf, 10, &val) < 0)
1339 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1341 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1344 struct it87_data *data = it87_update_device(dev);
1345 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1347 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1349 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1352 static const char * const labels[] = {
1357 static const char * const labels_it8721[] = {
1362 struct it87_data *data = dev_get_drvdata(dev);
1363 int nr = to_sensor_dev_attr(attr)->index;
1365 return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1368 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1369 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1370 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1372 static ssize_t show_name(struct device *dev, struct device_attribute
1373 *devattr, char *buf)
1375 struct it87_data *data = dev_get_drvdata(dev);
1376 return sprintf(buf, "%s\n", data->name);
1378 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1380 static struct attribute *it87_attributes_in[9][5] = {
1382 &sensor_dev_attr_in0_input.dev_attr.attr,
1383 &sensor_dev_attr_in0_min.dev_attr.attr,
1384 &sensor_dev_attr_in0_max.dev_attr.attr,
1385 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1388 &sensor_dev_attr_in1_input.dev_attr.attr,
1389 &sensor_dev_attr_in1_min.dev_attr.attr,
1390 &sensor_dev_attr_in1_max.dev_attr.attr,
1391 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1394 &sensor_dev_attr_in2_input.dev_attr.attr,
1395 &sensor_dev_attr_in2_min.dev_attr.attr,
1396 &sensor_dev_attr_in2_max.dev_attr.attr,
1397 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1400 &sensor_dev_attr_in3_input.dev_attr.attr,
1401 &sensor_dev_attr_in3_min.dev_attr.attr,
1402 &sensor_dev_attr_in3_max.dev_attr.attr,
1403 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1406 &sensor_dev_attr_in4_input.dev_attr.attr,
1407 &sensor_dev_attr_in4_min.dev_attr.attr,
1408 &sensor_dev_attr_in4_max.dev_attr.attr,
1409 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1412 &sensor_dev_attr_in5_input.dev_attr.attr,
1413 &sensor_dev_attr_in5_min.dev_attr.attr,
1414 &sensor_dev_attr_in5_max.dev_attr.attr,
1415 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1418 &sensor_dev_attr_in6_input.dev_attr.attr,
1419 &sensor_dev_attr_in6_min.dev_attr.attr,
1420 &sensor_dev_attr_in6_max.dev_attr.attr,
1421 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1424 &sensor_dev_attr_in7_input.dev_attr.attr,
1425 &sensor_dev_attr_in7_min.dev_attr.attr,
1426 &sensor_dev_attr_in7_max.dev_attr.attr,
1427 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1430 &sensor_dev_attr_in8_input.dev_attr.attr,
1434 static const struct attribute_group it87_group_in[9] = {
1435 { .attrs = it87_attributes_in[0] },
1436 { .attrs = it87_attributes_in[1] },
1437 { .attrs = it87_attributes_in[2] },
1438 { .attrs = it87_attributes_in[3] },
1439 { .attrs = it87_attributes_in[4] },
1440 { .attrs = it87_attributes_in[5] },
1441 { .attrs = it87_attributes_in[6] },
1442 { .attrs = it87_attributes_in[7] },
1443 { .attrs = it87_attributes_in[8] },
1446 static struct attribute *it87_attributes_temp[3][6] = {
1448 &sensor_dev_attr_temp1_input.dev_attr.attr,
1449 &sensor_dev_attr_temp1_max.dev_attr.attr,
1450 &sensor_dev_attr_temp1_min.dev_attr.attr,
1451 &sensor_dev_attr_temp1_type.dev_attr.attr,
1452 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1455 &sensor_dev_attr_temp2_input.dev_attr.attr,
1456 &sensor_dev_attr_temp2_max.dev_attr.attr,
1457 &sensor_dev_attr_temp2_min.dev_attr.attr,
1458 &sensor_dev_attr_temp2_type.dev_attr.attr,
1459 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1462 &sensor_dev_attr_temp3_input.dev_attr.attr,
1463 &sensor_dev_attr_temp3_max.dev_attr.attr,
1464 &sensor_dev_attr_temp3_min.dev_attr.attr,
1465 &sensor_dev_attr_temp3_type.dev_attr.attr,
1466 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1470 static const struct attribute_group it87_group_temp[3] = {
1471 { .attrs = it87_attributes_temp[0] },
1472 { .attrs = it87_attributes_temp[1] },
1473 { .attrs = it87_attributes_temp[2] },
1476 static struct attribute *it87_attributes_temp_offset[] = {
1477 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1478 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1479 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1482 static struct attribute *it87_attributes[] = {
1483 &dev_attr_alarms.attr,
1484 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1485 &dev_attr_name.attr,
1489 static const struct attribute_group it87_group = {
1490 .attrs = it87_attributes,
1493 static struct attribute *it87_attributes_in_beep[] = {
1494 &sensor_dev_attr_in0_beep.dev_attr.attr,
1495 &sensor_dev_attr_in1_beep.dev_attr.attr,
1496 &sensor_dev_attr_in2_beep.dev_attr.attr,
1497 &sensor_dev_attr_in3_beep.dev_attr.attr,
1498 &sensor_dev_attr_in4_beep.dev_attr.attr,
1499 &sensor_dev_attr_in5_beep.dev_attr.attr,
1500 &sensor_dev_attr_in6_beep.dev_attr.attr,
1501 &sensor_dev_attr_in7_beep.dev_attr.attr,
1505 static struct attribute *it87_attributes_temp_beep[] = {
1506 &sensor_dev_attr_temp1_beep.dev_attr.attr,
1507 &sensor_dev_attr_temp2_beep.dev_attr.attr,
1508 &sensor_dev_attr_temp3_beep.dev_attr.attr,
1511 static struct attribute *it87_attributes_fan[5][3+1] = { {
1512 &sensor_dev_attr_fan1_input.dev_attr.attr,
1513 &sensor_dev_attr_fan1_min.dev_attr.attr,
1514 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1517 &sensor_dev_attr_fan2_input.dev_attr.attr,
1518 &sensor_dev_attr_fan2_min.dev_attr.attr,
1519 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1522 &sensor_dev_attr_fan3_input.dev_attr.attr,
1523 &sensor_dev_attr_fan3_min.dev_attr.attr,
1524 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1527 &sensor_dev_attr_fan4_input.dev_attr.attr,
1528 &sensor_dev_attr_fan4_min.dev_attr.attr,
1529 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1532 &sensor_dev_attr_fan5_input.dev_attr.attr,
1533 &sensor_dev_attr_fan5_min.dev_attr.attr,
1534 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1538 static const struct attribute_group it87_group_fan[5] = {
1539 { .attrs = it87_attributes_fan[0] },
1540 { .attrs = it87_attributes_fan[1] },
1541 { .attrs = it87_attributes_fan[2] },
1542 { .attrs = it87_attributes_fan[3] },
1543 { .attrs = it87_attributes_fan[4] },
1546 static const struct attribute *it87_attributes_fan_div[] = {
1547 &sensor_dev_attr_fan1_div.dev_attr.attr,
1548 &sensor_dev_attr_fan2_div.dev_attr.attr,
1549 &sensor_dev_attr_fan3_div.dev_attr.attr,
1552 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1553 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1554 &sensor_dev_attr_pwm1.dev_attr.attr,
1555 &dev_attr_pwm1_freq.attr,
1556 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1559 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1560 &sensor_dev_attr_pwm2.dev_attr.attr,
1561 &dev_attr_pwm2_freq.attr,
1562 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1565 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1566 &sensor_dev_attr_pwm3.dev_attr.attr,
1567 &dev_attr_pwm3_freq.attr,
1568 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1572 static const struct attribute_group it87_group_pwm[3] = {
1573 { .attrs = it87_attributes_pwm[0] },
1574 { .attrs = it87_attributes_pwm[1] },
1575 { .attrs = it87_attributes_pwm[2] },
1578 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1579 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1580 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1581 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1582 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1583 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1584 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1585 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1586 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1587 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1590 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1591 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1592 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1593 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1594 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1595 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1596 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1597 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1598 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1601 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1602 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1603 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1604 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1605 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1606 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1607 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1608 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1609 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1613 static const struct attribute_group it87_group_autopwm[3] = {
1614 { .attrs = it87_attributes_autopwm[0] },
1615 { .attrs = it87_attributes_autopwm[1] },
1616 { .attrs = it87_attributes_autopwm[2] },
1619 static struct attribute *it87_attributes_fan_beep[] = {
1620 &sensor_dev_attr_fan1_beep.dev_attr.attr,
1621 &sensor_dev_attr_fan2_beep.dev_attr.attr,
1622 &sensor_dev_attr_fan3_beep.dev_attr.attr,
1623 &sensor_dev_attr_fan4_beep.dev_attr.attr,
1624 &sensor_dev_attr_fan5_beep.dev_attr.attr,
1627 static struct attribute *it87_attributes_vid[] = {
1629 &dev_attr_cpu0_vid.attr,
1633 static const struct attribute_group it87_group_vid = {
1634 .attrs = it87_attributes_vid,
1637 static struct attribute *it87_attributes_label[] = {
1638 &sensor_dev_attr_in3_label.dev_attr.attr,
1639 &sensor_dev_attr_in7_label.dev_attr.attr,
1640 &sensor_dev_attr_in8_label.dev_attr.attr,
1644 static const struct attribute_group it87_group_label = {
1645 .attrs = it87_attributes_label,
1648 /* SuperIO detection - will change isa_address if a chip is found */
1649 static int __init it87_find(unsigned short *address,
1650 struct it87_sio_data *sio_data)
1654 const char *board_vendor, *board_name;
1656 err = superio_enter();
1661 chip_type = force_id ? force_id : superio_inw(DEVID);
1663 switch (chip_type) {
1665 sio_data->type = it87;
1668 sio_data->type = it8712;
1672 sio_data->type = it8716;
1675 sio_data->type = it8718;
1678 sio_data->type = it8720;
1681 sio_data->type = it8721;
1684 sio_data->type = it8728;
1687 sio_data->type = it8782;
1690 sio_data->type = it8783;
1692 case 0xffff: /* No device at all */
1695 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1699 superio_select(PME);
1700 if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1701 pr_info("Device not activated, skipping\n");
1705 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1706 if (*address == 0) {
1707 pr_info("Base address not set, skipping\n");
1712 sio_data->revision = superio_inb(DEVREV) & 0x0f;
1713 pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1714 chip_type, *address, sio_data->revision);
1716 /* in8 (Vbat) is always internal */
1717 sio_data->internal = (1 << 2);
1719 /* Read GPIO config and VID value from LDN 7 (GPIO) */
1720 if (sio_data->type == it87) {
1721 /* The IT8705F doesn't have VID pins at all */
1722 sio_data->skip_vid = 1;
1724 /* The IT8705F has a different LD number for GPIO */
1726 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1727 } else if (sio_data->type == it8783) {
1728 int reg25, reg27, reg2A, reg2C, regEF;
1730 sio_data->skip_vid = 1; /* No VID */
1732 superio_select(GPIO);
1734 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1735 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1736 reg2A = superio_inb(IT87_SIO_PINX1_REG);
1737 reg2C = superio_inb(IT87_SIO_PINX2_REG);
1738 regEF = superio_inb(IT87_SIO_SPI_REG);
1740 /* Check if fan3 is there or not */
1741 if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2)))
1742 sio_data->skip_fan |= (1 << 2);
1743 if ((reg25 & (1 << 4))
1744 || (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
1745 sio_data->skip_pwm |= (1 << 2);
1747 /* Check if fan2 is there or not */
1748 if (reg27 & (1 << 7))
1749 sio_data->skip_fan |= (1 << 1);
1750 if (reg27 & (1 << 3))
1751 sio_data->skip_pwm |= (1 << 1);
1754 if ((reg27 & (1 << 0)) || (reg2C & (1 << 2)))
1755 sio_data->skip_in |= (1 << 5); /* No VIN5 */
1758 if (reg27 & (1 << 1))
1759 sio_data->skip_in |= (1 << 6); /* No VIN6 */
1763 * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1765 if (reg27 & (1 << 2)) {
1767 * The data sheet is a bit unclear regarding the
1768 * internal voltage divider for VCCH5V. It says
1769 * "This bit enables and switches VIN7 (pin 91) to the
1770 * internal voltage divider for VCCH5V".
1771 * This is different to other chips, where the internal
1772 * voltage divider would connect VIN7 to an internal
1773 * voltage source. Maybe that is the case here as well.
1775 * Since we don't know for sure, re-route it if that is
1776 * not the case, and ask the user to report if the
1777 * resulting voltage is sane.
1779 if (!(reg2C & (1 << 1))) {
1781 superio_outb(IT87_SIO_PINX2_REG, reg2C);
1782 pr_notice("Routing internal VCCH5V to in7.\n");
1784 pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1785 pr_notice("Please report if it displays a reasonable voltage.\n");
1788 if (reg2C & (1 << 0))
1789 sio_data->internal |= (1 << 0);
1790 if (reg2C & (1 << 1))
1791 sio_data->internal |= (1 << 1);
1793 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1799 superio_select(GPIO);
1801 reg = superio_inb(IT87_SIO_GPIO3_REG);
1802 if (sio_data->type == it8721 || sio_data->type == it8728 ||
1803 sio_data->type == it8782) {
1805 * IT8721F/IT8758E, and IT8782F don't have VID pins
1806 * at all, not sure about the IT8728F.
1808 sio_data->skip_vid = 1;
1810 /* We need at least 4 VID pins */
1812 pr_info("VID is disabled (pins used for GPIO)\n");
1813 sio_data->skip_vid = 1;
1817 /* Check if fan3 is there or not */
1819 sio_data->skip_pwm |= (1 << 2);
1821 sio_data->skip_fan |= (1 << 2);
1823 /* Check if fan2 is there or not */
1824 reg = superio_inb(IT87_SIO_GPIO5_REG);
1826 sio_data->skip_pwm |= (1 << 1);
1828 sio_data->skip_fan |= (1 << 1);
1830 if ((sio_data->type == it8718 || sio_data->type == it8720)
1831 && !(sio_data->skip_vid))
1832 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1834 reg = superio_inb(IT87_SIO_PINX2_REG);
1836 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1839 * The IT8720F has no VIN7 pin, so VCCH should always be
1840 * routed internally to VIN7 with an internal divider.
1841 * Curiously, there still is a configuration bit to control
1842 * this, which means it can be set incorrectly. And even
1843 * more curiously, many boards out there are improperly
1844 * configured, even though the IT8720F datasheet claims
1845 * that the internal routing of VCCH to VIN7 is the default
1846 * setting. So we force the internal routing in this case.
1848 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1849 * If UART6 is enabled, re-route VIN7 to the internal divider
1850 * if that is not already the case.
1852 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1854 superio_outb(IT87_SIO_PINX2_REG, reg);
1855 pr_notice("Routing internal VCCH to in7\n");
1858 sio_data->internal |= (1 << 0);
1859 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1860 sio_data->type == it8728)
1861 sio_data->internal |= (1 << 1);
1864 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1865 * While VIN7 can be routed to the internal voltage divider,
1866 * VIN5 and VIN6 are not available if UART6 is enabled.
1868 * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1869 * is the temperature source. Since we can not read the
1870 * temperature source here, skip_temp is preliminary.
1873 sio_data->skip_in |= (1 << 5) | (1 << 6);
1874 sio_data->skip_temp |= (1 << 2);
1877 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1879 if (sio_data->beep_pin)
1880 pr_info("Beeping is supported\n");
1882 /* Disable specific features based on DMI strings */
1883 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1884 board_name = dmi_get_system_info(DMI_BOARD_NAME);
1885 if (board_vendor && board_name) {
1886 if (strcmp(board_vendor, "nVIDIA") == 0
1887 && strcmp(board_name, "FN68PT") == 0) {
1889 * On the Shuttle SN68PT, FAN_CTL2 is apparently not
1890 * connected to a fan, but to something else. One user
1891 * has reported instant system power-off when changing
1892 * the PWM2 duty cycle, so we disable it.
1893 * I use the board name string as the trigger in case
1894 * the same board is ever used in other systems.
1896 pr_info("Disabling pwm2 due to hardware constraints\n");
1897 sio_data->skip_pwm = (1 << 1);
1906 static void it87_remove_files(struct device *dev)
1908 struct it87_data *data = platform_get_drvdata(pdev);
1909 struct it87_sio_data *sio_data = dev->platform_data;
1912 sysfs_remove_group(&dev->kobj, &it87_group);
1913 for (i = 0; i < 9; i++) {
1914 if (sio_data->skip_in & (1 << i))
1916 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
1917 if (it87_attributes_in_beep[i])
1918 sysfs_remove_file(&dev->kobj,
1919 it87_attributes_in_beep[i]);
1921 for (i = 0; i < 3; i++) {
1922 if (!(data->has_temp & (1 << i)))
1924 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
1925 if (has_temp_offset(data))
1926 sysfs_remove_file(&dev->kobj,
1927 it87_attributes_temp_offset[i]);
1928 if (sio_data->beep_pin)
1929 sysfs_remove_file(&dev->kobj,
1930 it87_attributes_temp_beep[i]);
1932 for (i = 0; i < 5; i++) {
1933 if (!(data->has_fan & (1 << i)))
1935 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
1936 if (sio_data->beep_pin)
1937 sysfs_remove_file(&dev->kobj,
1938 it87_attributes_fan_beep[i]);
1939 if (i < 3 && !has_16bit_fans(data))
1940 sysfs_remove_file(&dev->kobj,
1941 it87_attributes_fan_div[i]);
1943 for (i = 0; i < 3; i++) {
1944 if (sio_data->skip_pwm & (1 << 0))
1946 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
1947 if (has_old_autopwm(data))
1948 sysfs_remove_group(&dev->kobj,
1949 &it87_group_autopwm[i]);
1951 if (!sio_data->skip_vid)
1952 sysfs_remove_group(&dev->kobj, &it87_group_vid);
1953 sysfs_remove_group(&dev->kobj, &it87_group_label);
1956 static int it87_probe(struct platform_device *pdev)
1958 struct it87_data *data;
1959 struct resource *res;
1960 struct device *dev = &pdev->dev;
1961 struct it87_sio_data *sio_data = dev->platform_data;
1963 int enable_pwm_interface;
1964 int fan_beep_need_rw;
1966 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1967 if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
1969 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1970 (unsigned long)res->start,
1971 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
1975 data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
1979 data->addr = res->start;
1980 data->type = sio_data->type;
1981 data->features = it87_devices[sio_data->type].features;
1982 data->peci_mask = it87_devices[sio_data->type].peci_mask;
1983 data->name = it87_devices[sio_data->type].name;
1985 * IT8705F Datasheet 0.4.1, 3h == Version G.
1986 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
1987 * These are the first revisions with 16-bit tachometer support.
1989 switch (data->type) {
1991 if (sio_data->revision >= 0x03) {
1992 data->features &= ~FEAT_OLD_AUTOPWM;
1993 data->features |= FEAT_16BIT_FANS;
1997 if (sio_data->revision >= 0x08) {
1998 data->features &= ~FEAT_OLD_AUTOPWM;
1999 data->features |= FEAT_16BIT_FANS;
2006 /* Now, we do the remaining detection. */
2007 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2008 || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2011 platform_set_drvdata(pdev, data);
2013 mutex_init(&data->update_lock);
2015 /* Check PWM configuration */
2016 enable_pwm_interface = it87_check_pwm(dev);
2018 /* Starting with IT8721F, we handle scaling of internal voltages */
2019 if (has_12mv_adc(data)) {
2020 if (sio_data->internal & (1 << 0))
2021 data->in_scaled |= (1 << 3); /* in3 is AVCC */
2022 if (sio_data->internal & (1 << 1))
2023 data->in_scaled |= (1 << 7); /* in7 is VSB */
2024 if (sio_data->internal & (1 << 2))
2025 data->in_scaled |= (1 << 8); /* in8 is Vbat */
2026 } else if (sio_data->type == it8782 || sio_data->type == it8783) {
2027 if (sio_data->internal & (1 << 0))
2028 data->in_scaled |= (1 << 3); /* in3 is VCC5V */
2029 if (sio_data->internal & (1 << 1))
2030 data->in_scaled |= (1 << 7); /* in7 is VCCH5V */
2033 data->has_temp = 0x07;
2034 if (sio_data->skip_temp & (1 << 2)) {
2035 if (sio_data->type == it8782
2036 && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2037 data->has_temp &= ~(1 << 2);
2040 /* Initialize the IT87 chip */
2041 it87_init_device(pdev);
2043 /* Register sysfs hooks */
2044 err = sysfs_create_group(&dev->kobj, &it87_group);
2048 for (i = 0; i < 9; i++) {
2049 if (sio_data->skip_in & (1 << i))
2051 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2054 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2055 err = sysfs_create_file(&dev->kobj,
2056 it87_attributes_in_beep[i]);
2062 for (i = 0; i < 3; i++) {
2063 if (!(data->has_temp & (1 << i)))
2065 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2068 if (has_temp_offset(data)) {
2069 err = sysfs_create_file(&dev->kobj,
2070 it87_attributes_temp_offset[i]);
2074 if (sio_data->beep_pin) {
2075 err = sysfs_create_file(&dev->kobj,
2076 it87_attributes_temp_beep[i]);
2082 /* Do not create fan files for disabled fans */
2083 fan_beep_need_rw = 1;
2084 for (i = 0; i < 5; i++) {
2085 if (!(data->has_fan & (1 << i)))
2087 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2091 if (i < 3 && !has_16bit_fans(data)) {
2092 err = sysfs_create_file(&dev->kobj,
2093 it87_attributes_fan_div[i]);
2098 if (sio_data->beep_pin) {
2099 err = sysfs_create_file(&dev->kobj,
2100 it87_attributes_fan_beep[i]);
2103 if (!fan_beep_need_rw)
2107 * As we have a single beep enable bit for all fans,
2108 * only the first enabled fan has a writable attribute
2111 if (sysfs_chmod_file(&dev->kobj,
2112 it87_attributes_fan_beep[i],
2114 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2116 fan_beep_need_rw = 0;
2120 if (enable_pwm_interface) {
2121 for (i = 0; i < 3; i++) {
2122 if (sio_data->skip_pwm & (1 << i))
2124 err = sysfs_create_group(&dev->kobj,
2125 &it87_group_pwm[i]);
2129 if (!has_old_autopwm(data))
2131 err = sysfs_create_group(&dev->kobj,
2132 &it87_group_autopwm[i]);
2138 if (!sio_data->skip_vid) {
2139 data->vrm = vid_which_vrm();
2140 /* VID reading from Super-I/O config space if available */
2141 data->vid = sio_data->vid_value;
2142 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2147 /* Export labels for internal sensors */
2148 for (i = 0; i < 3; i++) {
2149 if (!(sio_data->internal & (1 << i)))
2151 err = sysfs_create_file(&dev->kobj,
2152 it87_attributes_label[i]);
2157 data->hwmon_dev = hwmon_device_register(dev);
2158 if (IS_ERR(data->hwmon_dev)) {
2159 err = PTR_ERR(data->hwmon_dev);
2166 it87_remove_files(dev);
2170 static int it87_remove(struct platform_device *pdev)
2172 struct it87_data *data = platform_get_drvdata(pdev);
2174 hwmon_device_unregister(data->hwmon_dev);
2175 it87_remove_files(&pdev->dev);
2181 * Must be called with data->update_lock held, except during initialization.
2182 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2183 * would slow down the IT87 access and should not be necessary.
2185 static int it87_read_value(struct it87_data *data, u8 reg)
2187 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2188 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2192 * Must be called with data->update_lock held, except during initialization.
2193 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2194 * would slow down the IT87 access and should not be necessary.
2196 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2198 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2199 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2202 /* Return 1 if and only if the PWM interface is safe to use */
2203 static int it87_check_pwm(struct device *dev)
2205 struct it87_data *data = dev_get_drvdata(dev);
2207 * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2208 * and polarity set to active low is sign that this is the case so we
2209 * disable pwm control to protect the user.
2211 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2212 if ((tmp & 0x87) == 0) {
2213 if (fix_pwm_polarity) {
2215 * The user asks us to attempt a chip reconfiguration.
2216 * This means switching to active high polarity and
2217 * inverting all fan speed values.
2222 for (i = 0; i < 3; i++)
2223 pwm[i] = it87_read_value(data,
2227 * If any fan is in automatic pwm mode, the polarity
2228 * might be correct, as suspicious as it seems, so we
2229 * better don't change anything (but still disable the
2232 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2234 "Reconfiguring PWM to active high polarity\n");
2235 it87_write_value(data, IT87_REG_FAN_CTL,
2237 for (i = 0; i < 3; i++)
2238 it87_write_value(data,
2245 "PWM configuration is too broken to be fixed\n");
2249 "Detected broken BIOS defaults, disabling PWM interface\n");
2251 } else if (fix_pwm_polarity) {
2253 "PWM configuration looks sane, won't touch\n");
2259 /* Called when we have found a new IT87. */
2260 static void it87_init_device(struct platform_device *pdev)
2262 struct it87_sio_data *sio_data = pdev->dev.platform_data;
2263 struct it87_data *data = platform_get_drvdata(pdev);
2268 * For each PWM channel:
2269 * - If it is in automatic mode, setting to manual mode should set
2270 * the fan to full speed by default.
2271 * - If it is in manual mode, we need a mapping to temperature
2272 * channels to use when later setting to automatic mode later.
2273 * Use a 1:1 mapping by default (we are clueless.)
2274 * In both cases, the value can (and should) be changed by the user
2275 * prior to switching to a different mode.
2276 * Note that this is no longer needed for the IT8721F and later, as
2277 * these have separate registers for the temperature mapping and the
2278 * manual duty cycle.
2280 for (i = 0; i < 3; i++) {
2281 data->pwm_temp_map[i] = i;
2282 data->pwm_duty[i] = 0x7f; /* Full speed */
2283 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
2287 * Some chips seem to have default value 0xff for all limit
2288 * registers. For low voltage limits it makes no sense and triggers
2289 * alarms, so change to 0 instead. For high temperature limits, it
2290 * means -1 degree C, which surprisingly doesn't trigger an alarm,
2291 * but is still confusing, so change to 127 degrees C.
2293 for (i = 0; i < 8; i++) {
2294 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2296 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2298 for (i = 0; i < 3; i++) {
2299 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2301 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2305 * Temperature channels are not forcibly enabled, as they can be
2306 * set to two different sensor types and we can't guess which one
2307 * is correct for a given system. These channels can be enabled at
2308 * run-time through the temp{1-3}_type sysfs accessors if needed.
2311 /* Check if voltage monitors are reset manually or by some reason */
2312 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2313 if ((tmp & 0xff) == 0) {
2314 /* Enable all voltage monitors */
2315 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2318 /* Check if tachometers are reset manually or by some reason */
2319 mask = 0x70 & ~(sio_data->skip_fan << 4);
2320 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2321 if ((data->fan_main_ctrl & mask) == 0) {
2322 /* Enable all fan tachometers */
2323 data->fan_main_ctrl |= mask;
2324 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2325 data->fan_main_ctrl);
2327 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2329 /* Set tachometers to 16-bit mode if needed */
2330 if (has_16bit_fans(data)) {
2331 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2332 if (~tmp & 0x07 & data->has_fan) {
2334 "Setting fan1-3 to 16-bit mode\n");
2335 it87_write_value(data, IT87_REG_FAN_16BIT,
2338 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2339 if (data->type != it87 && data->type != it8782 &&
2340 data->type != it8783) {
2342 data->has_fan |= (1 << 3); /* fan4 enabled */
2344 data->has_fan |= (1 << 4); /* fan5 enabled */
2348 /* Fan input pins may be used for alternative functions */
2349 data->has_fan &= ~sio_data->skip_fan;
2351 /* Start monitoring */
2352 it87_write_value(data, IT87_REG_CONFIG,
2353 (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2354 | (update_vbat ? 0x41 : 0x01));
2357 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2359 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2360 if (has_newer_autopwm(data)) {
2361 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2362 data->pwm_duty[nr] = it87_read_value(data,
2363 IT87_REG_PWM_DUTY(nr));
2365 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
2366 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2367 else /* Manual mode */
2368 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2371 if (has_old_autopwm(data)) {
2374 for (i = 0; i < 5 ; i++)
2375 data->auto_temp[nr][i] = it87_read_value(data,
2376 IT87_REG_AUTO_TEMP(nr, i));
2377 for (i = 0; i < 3 ; i++)
2378 data->auto_pwm[nr][i] = it87_read_value(data,
2379 IT87_REG_AUTO_PWM(nr, i));
2383 static struct it87_data *it87_update_device(struct device *dev)
2385 struct it87_data *data = dev_get_drvdata(dev);
2388 mutex_lock(&data->update_lock);
2390 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2394 * Cleared after each update, so reenable. Value
2395 * returned by this read will be previous value
2397 it87_write_value(data, IT87_REG_CONFIG,
2398 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2400 for (i = 0; i <= 7; i++) {
2402 it87_read_value(data, IT87_REG_VIN(i));
2404 it87_read_value(data, IT87_REG_VIN_MIN(i));
2406 it87_read_value(data, IT87_REG_VIN_MAX(i));
2408 /* in8 (battery) has no limit registers */
2409 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2411 for (i = 0; i < 5; i++) {
2412 /* Skip disabled fans */
2413 if (!(data->has_fan & (1 << i)))
2417 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2418 data->fan[i][0] = it87_read_value(data,
2420 /* Add high byte if in 16-bit mode */
2421 if (has_16bit_fans(data)) {
2422 data->fan[i][0] |= it87_read_value(data,
2423 IT87_REG_FANX[i]) << 8;
2424 data->fan[i][1] |= it87_read_value(data,
2425 IT87_REG_FANX_MIN[i]) << 8;
2428 for (i = 0; i < 3; i++) {
2429 if (!(data->has_temp & (1 << i)))
2432 it87_read_value(data, IT87_REG_TEMP(i));
2434 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2436 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2437 if (has_temp_offset(data))
2439 it87_read_value(data,
2440 IT87_REG_TEMP_OFFSET[i]);
2443 /* Newer chips don't have clock dividers */
2444 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2445 i = it87_read_value(data, IT87_REG_FAN_DIV);
2446 data->fan_div[0] = i & 0x07;
2447 data->fan_div[1] = (i >> 3) & 0x07;
2448 data->fan_div[2] = (i & 0x40) ? 3 : 1;
2452 it87_read_value(data, IT87_REG_ALARM1) |
2453 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2454 (it87_read_value(data, IT87_REG_ALARM3) << 16);
2455 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2457 data->fan_main_ctrl = it87_read_value(data,
2458 IT87_REG_FAN_MAIN_CTRL);
2459 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2460 for (i = 0; i < 3; i++)
2461 it87_update_pwm_ctrl(data, i);
2463 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2465 * The IT8705F does not have VID capability.
2466 * The IT8718F and later don't use IT87_REG_VID for the
2469 if (data->type == it8712 || data->type == it8716) {
2470 data->vid = it87_read_value(data, IT87_REG_VID);
2472 * The older IT8712F revisions had only 5 VID pins,
2473 * but we assume it is always safe to read 6 bits.
2477 data->last_updated = jiffies;
2481 mutex_unlock(&data->update_lock);
2486 static int __init it87_device_add(unsigned short address,
2487 const struct it87_sio_data *sio_data)
2489 struct resource res = {
2490 .start = address + IT87_EC_OFFSET,
2491 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2493 .flags = IORESOURCE_IO,
2497 err = acpi_check_resource_conflict(&res);
2501 pdev = platform_device_alloc(DRVNAME, address);
2504 pr_err("Device allocation failed\n");
2508 err = platform_device_add_resources(pdev, &res, 1);
2510 pr_err("Device resource addition failed (%d)\n", err);
2511 goto exit_device_put;
2514 err = platform_device_add_data(pdev, sio_data,
2515 sizeof(struct it87_sio_data));
2517 pr_err("Platform data allocation failed\n");
2518 goto exit_device_put;
2521 err = platform_device_add(pdev);
2523 pr_err("Device addition failed (%d)\n", err);
2524 goto exit_device_put;
2530 platform_device_put(pdev);
2535 static int __init sm_it87_init(void)
2538 unsigned short isa_address = 0;
2539 struct it87_sio_data sio_data;
2541 memset(&sio_data, 0, sizeof(struct it87_sio_data));
2542 err = it87_find(&isa_address, &sio_data);
2545 err = platform_driver_register(&it87_driver);
2549 err = it87_device_add(isa_address, &sio_data);
2551 platform_driver_unregister(&it87_driver);
2558 static void __exit sm_it87_exit(void)
2560 platform_device_unregister(pdev);
2561 platform_driver_unregister(&it87_driver);
2565 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>");
2566 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2567 module_param(update_vbat, bool, 0);
2568 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2569 module_param(fix_pwm_polarity, bool, 0);
2570 MODULE_PARM_DESC(fix_pwm_polarity,
2571 "Force PWM polarity to active high (DANGEROUS)");
2572 MODULE_LICENSE("GPL");
2574 module_init(sm_it87_init);
2575 module_exit(sm_it87_exit);