diff options
Diffstat (limited to 'drivers/hwmon/it87.c')
| -rw-r--r-- | drivers/hwmon/it87.c | 384 |
1 files changed, 285 insertions, 99 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 0b204e4cf51..e7701d99f8e 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -19,6 +19,8 @@ * IT8726F Super I/O chip w/LPC interface * IT8728F Super I/O chip w/LPC interface * IT8758E Super I/O chip w/LPC interface + * IT8782F Super I/O chip w/LPC interface + * IT8783E/F Super I/O chip w/LPC interface * Sis950 A clone of the IT8705F * * Copyright (C) 2001 Chris Gauthron @@ -59,7 +61,8 @@ #define DRVNAME "it87" -enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728 }; +enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8782, + it8783 }; static unsigned short force_id; module_param(force_id, ushort, 0); @@ -137,13 +140,18 @@ static inline void superio_exit(void) #define IT8721F_DEVID 0x8721 #define IT8726F_DEVID 0x8726 #define IT8728F_DEVID 0x8728 +#define IT8782F_DEVID 0x8782 +#define IT8783E_DEVID 0x8783 #define IT87_ACT_REG 0x30 #define IT87_BASE_REG 0x60 /* Logical device 7 registers (IT8712F and later) */ +#define IT87_SIO_GPIO1_REG 0x25 #define IT87_SIO_GPIO3_REG 0x27 #define IT87_SIO_GPIO5_REG 0x29 +#define IT87_SIO_PINX1_REG 0x2a /* Pin selection */ #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ +#define IT87_SIO_SPI_REG 0xef /* SPI function pin select */ #define IT87_SIO_VID_REG 0xfc /* VID value */ #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */ @@ -210,6 +218,7 @@ static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; #define IT87_REG_VIN_ENABLE 0x50 #define IT87_REG_TEMP_ENABLE 0x51 +#define IT87_REG_TEMP_EXTRA 0x55 #define IT87_REG_BEEP_ENABLE 0x5c #define IT87_REG_CHIPID 0x58 @@ -226,9 +235,11 @@ struct it87_sio_data { u8 beep_pin; u8 internal; /* Internal sensors can be labeled */ /* Features skipped based on config or DMI */ + u16 skip_in; u8 skip_vid; u8 skip_fan; u8 skip_pwm; + u8 skip_temp; }; /* @@ -253,6 +264,7 @@ struct it87_data { u8 has_fan; /* Bitfield, fans enabled */ u16 fan[5]; /* Register values, possibly combined */ u16 fan_min[5]; /* Register values, possibly combined */ + u8 has_temp; /* Bitfield, temp sensors enabled */ s8 temp[3]; /* Register value */ s8 temp_high[3]; /* Register value */ s8 temp_low[3]; /* Register value */ @@ -304,31 +316,23 @@ static inline int has_newer_autopwm(const struct it87_data *data) || data->type == it8728; } -static u8 in_to_reg(const struct it87_data *data, int nr, long val) +static int adc_lsb(const struct it87_data *data, int nr) { - long lsb; - - if (has_12mv_adc(data)) { - if (data->in_scaled & (1 << nr)) - lsb = 24; - else - lsb = 12; - } else - lsb = 16; + int lsb = has_12mv_adc(data) ? 12 : 16; + if (data->in_scaled & (1 << nr)) + lsb <<= 1; + return lsb; +} - val = DIV_ROUND_CLOSEST(val, lsb); +static u8 in_to_reg(const struct it87_data *data, int nr, long val) +{ + val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr)); return SENSORS_LIMIT(val, 0, 255); } static int in_from_reg(const struct it87_data *data, int nr, int val) { - if (has_12mv_adc(data)) { - if (data->in_scaled & (1 << nr)) - return val * 24; - else - return val * 12; - } else - return val * 16; + return val * adc_lsb(data, nr); } static inline u8 FAN_TO_REG(long rpm, int div) @@ -407,7 +411,9 @@ static inline int has_16bit_fans(const struct it87_data *data) || data->type == it8718 || data->type == it8720 || data->type == it8721 - || data->type == it8728; + || data->type == it8728 + || data->type == it8782 + || data->type == it8783; } static inline int has_old_autopwm(const struct it87_data *data) @@ -1369,57 +1375,103 @@ static ssize_t show_name(struct device *dev, struct device_attribute } static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); -static struct attribute *it87_attributes[] = { +static struct attribute *it87_attributes_in[9][5] = { +{ &sensor_dev_attr_in0_input.dev_attr.attr, - &sensor_dev_attr_in1_input.dev_attr.attr, - &sensor_dev_attr_in2_input.dev_attr.attr, - &sensor_dev_attr_in3_input.dev_attr.attr, - &sensor_dev_attr_in4_input.dev_attr.attr, - &sensor_dev_attr_in5_input.dev_attr.attr, - &sensor_dev_attr_in6_input.dev_attr.attr, - &sensor_dev_attr_in7_input.dev_attr.attr, - &sensor_dev_attr_in8_input.dev_attr.attr, &sensor_dev_attr_in0_min.dev_attr.attr, - &sensor_dev_attr_in1_min.dev_attr.attr, - &sensor_dev_attr_in2_min.dev_attr.attr, - &sensor_dev_attr_in3_min.dev_attr.attr, - &sensor_dev_attr_in4_min.dev_attr.attr, - &sensor_dev_attr_in5_min.dev_attr.attr, - &sensor_dev_attr_in6_min.dev_attr.attr, - &sensor_dev_attr_in7_min.dev_attr.attr, &sensor_dev_attr_in0_max.dev_attr.attr, - &sensor_dev_attr_in1_max.dev_attr.attr, - &sensor_dev_attr_in2_max.dev_attr.attr, - &sensor_dev_attr_in3_max.dev_attr.attr, - &sensor_dev_attr_in4_max.dev_attr.attr, - &sensor_dev_attr_in5_max.dev_attr.attr, - &sensor_dev_attr_in6_max.dev_attr.attr, - &sensor_dev_attr_in7_max.dev_attr.attr, &sensor_dev_attr_in0_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, &sensor_dev_attr_in1_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, &sensor_dev_attr_in2_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in3_min.dev_attr.attr, + &sensor_dev_attr_in3_max.dev_attr.attr, &sensor_dev_attr_in3_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in4_input.dev_attr.attr, + &sensor_dev_attr_in4_min.dev_attr.attr, + &sensor_dev_attr_in4_max.dev_attr.attr, &sensor_dev_attr_in4_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in5_input.dev_attr.attr, + &sensor_dev_attr_in5_min.dev_attr.attr, + &sensor_dev_attr_in5_max.dev_attr.attr, &sensor_dev_attr_in5_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in6_input.dev_attr.attr, + &sensor_dev_attr_in6_min.dev_attr.attr, + &sensor_dev_attr_in6_max.dev_attr.attr, &sensor_dev_attr_in6_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in7_input.dev_attr.attr, + &sensor_dev_attr_in7_min.dev_attr.attr, + &sensor_dev_attr_in7_max.dev_attr.attr, &sensor_dev_attr_in7_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in8_input.dev_attr.attr, + NULL +} }; +static const struct attribute_group it87_group_in[9] = { + { .attrs = it87_attributes_in[0] }, + { .attrs = it87_attributes_in[1] }, + { .attrs = it87_attributes_in[2] }, + { .attrs = it87_attributes_in[3] }, + { .attrs = it87_attributes_in[4] }, + { .attrs = it87_attributes_in[5] }, + { .attrs = it87_attributes_in[6] }, + { .attrs = it87_attributes_in[7] }, + { .attrs = it87_attributes_in[8] }, +}; + +static struct attribute *it87_attributes_temp[3][6] = { +{ &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp2_input.dev_attr.attr, - &sensor_dev_attr_temp3_input.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, - &sensor_dev_attr_temp2_max.dev_attr.attr, - &sensor_dev_attr_temp3_max.dev_attr.attr, &sensor_dev_attr_temp1_min.dev_attr.attr, - &sensor_dev_attr_temp2_min.dev_attr.attr, - &sensor_dev_attr_temp3_min.dev_attr.attr, &sensor_dev_attr_temp1_type.dev_attr.attr, - &sensor_dev_attr_temp2_type.dev_attr.attr, - &sensor_dev_attr_temp3_type.dev_attr.attr, &sensor_dev_attr_temp1_alarm.dev_attr.attr, + NULL +} , { + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp2_max.dev_attr.attr, + &sensor_dev_attr_temp2_min.dev_attr.attr, + &sensor_dev_attr_temp2_type.dev_attr.attr, &sensor_dev_attr_temp2_alarm.dev_attr.attr, + NULL +} , { + &sensor_dev_attr_temp3_input.dev_attr.attr, + &sensor_dev_attr_temp3_max.dev_attr.attr, + &sensor_dev_attr_temp3_min.dev_attr.attr, + &sensor_dev_attr_temp3_type.dev_attr.attr, &sensor_dev_attr_temp3_alarm.dev_attr.attr, + NULL +} }; + +static const struct attribute_group it87_group_temp[3] = { + { .attrs = it87_attributes_temp[0] }, + { .attrs = it87_attributes_temp[1] }, + { .attrs = it87_attributes_temp[2] }, +}; +static struct attribute *it87_attributes[] = { &dev_attr_alarms.attr, &sensor_dev_attr_intrusion0_alarm.dev_attr.attr, &dev_attr_name.attr, @@ -1430,7 +1482,7 @@ static const struct attribute_group it87_group = { .attrs = it87_attributes, }; -static struct attribute *it87_attributes_beep[] = { +static struct attribute *it87_attributes_in_beep[] = { &sensor_dev_attr_in0_beep.dev_attr.attr, &sensor_dev_attr_in1_beep.dev_attr.attr, &sensor_dev_attr_in2_beep.dev_attr.attr, @@ -1439,15 +1491,13 @@ static struct attribute *it87_attributes_beep[] = { &sensor_dev_attr_in5_beep.dev_attr.attr, &sensor_dev_attr_in6_beep.dev_attr.attr, &sensor_dev_attr_in7_beep.dev_attr.attr, + NULL +}; +static struct attribute *it87_attributes_temp_beep[] = { &sensor_dev_attr_temp1_beep.dev_attr.attr, &sensor_dev_attr_temp2_beep.dev_attr.attr, &sensor_dev_attr_temp3_beep.dev_attr.attr, - NULL -}; - -static const struct attribute_group it87_group_beep = { - .attrs = it87_attributes_beep, }; static struct attribute *it87_attributes_fan16[5][3+1] = { { @@ -1651,6 +1701,12 @@ static int __init it87_find(unsigned short *address, case IT8728F_DEVID: sio_data->type = it8728; break; + case IT8782F_DEVID: + sio_data->type = it8782; + break; + case IT8783E_DEVID: + sio_data->type = it8783; + break; case 0xffff: /* No device at all */ goto exit; default: @@ -1686,16 +1742,86 @@ static int __init it87_find(unsigned short *address, /* The IT8705F has a different LD number for GPIO */ superio_select(5); sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; + } else if (sio_data->type == it8783) { + int reg25, reg27, reg2A, reg2C, regEF; + + sio_data->skip_vid = 1; /* No VID */ + + superio_select(GPIO); + + reg25 = superio_inb(IT87_SIO_GPIO1_REG); + reg27 = superio_inb(IT87_SIO_GPIO3_REG); + reg2A = superio_inb(IT87_SIO_PINX1_REG); + reg2C = superio_inb(IT87_SIO_PINX2_REG); + regEF = superio_inb(IT87_SIO_SPI_REG); + + /* Check if fan3 is there or not */ + if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2))) + sio_data->skip_fan |= (1 << 2); + if ((reg25 & (1 << 4)) + || (!(reg2A & (1 << 1)) && (regEF & (1 << 0)))) + sio_data->skip_pwm |= (1 << 2); + + /* Check if fan2 is there or not */ + if (reg27 & (1 << 7)) + sio_data->skip_fan |= (1 << 1); + if (reg27 & (1 << 3)) + sio_data->skip_pwm |= (1 << 1); + + /* VIN5 */ + if ((reg27 & (1 << 0)) || (reg2C & (1 << 2))) + sio_data->skip_in |= (1 << 5); /* No VIN5 */ + + /* VIN6 */ + if (reg27 & (1 << 1)) + sio_data->skip_in |= (1 << 6); /* No VIN6 */ + + /* + * VIN7 + * Does not depend on bit 2 of Reg2C, contrary to datasheet. + */ + if (reg27 & (1 << 2)) { + /* + * The data sheet is a bit unclear regarding the + * internal voltage divider for VCCH5V. It says + * "This bit enables and switches VIN7 (pin 91) to the + * internal voltage divider for VCCH5V". + * This is different to other chips, where the internal + * voltage divider would connect VIN7 to an internal + * voltage source. Maybe that is the case here as well. + * + * Since we don't know for sure, re-route it if that is + * not the case, and ask the user to report if the + * resulting voltage is sane. + */ + if (!(reg2C & (1 << 1))) { + reg2C |= (1 << 1); + superio_outb(IT87_SIO_PINX2_REG, reg2C); + pr_notice("Routing internal VCCH5V to in7.\n"); + } + pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n"); + pr_notice("Please report if it displays a reasonable voltage.\n"); + } + + if (reg2C & (1 << 0)) + sio_data->internal |= (1 << 0); + if (reg2C & (1 << 1)) + sio_data->internal |= (1 << 1); + + sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; + } else { int reg; + bool uart6; superio_select(GPIO); reg = superio_inb(IT87_SIO_GPIO3_REG); - if (sio_data->type == it8721 || sio_data->type == it8728) { + if (sio_data->type == it8721 || sio_data->type == it8728 || + sio_data->type == it8782) { /* - * The IT8721F/IT8758E doesn't have VID pins at all, - * not sure about the IT8728F. + * IT8721F/IT8758E, and IT8782F don't have VID pins + * at all, not sure about the IT8728F. */ sio_data->skip_vid = 1; } else { @@ -1724,6 +1850,9 @@ static int __init it87_find(unsigned short *address, sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); reg = superio_inb(IT87_SIO_PINX2_REG); + + uart6 = sio_data->type == it8782 && (reg & (1 << 2)); + /* * The IT8720F has no VIN7 pin, so VCCH should always be * routed internally to VIN7 with an internal divider. @@ -1733,8 +1862,12 @@ static int __init it87_find(unsigned short *address, * configured, even though the IT8720F datasheet claims * that the internal routing of VCCH to VIN7 is the default * setting. So we force the internal routing in this case. + * + * On IT8782F, VIN7 is multiplexed with one of the UART6 pins. + * If UART6 is enabled, re-route VIN7 to the internal divider + * if that is not already the case. */ - if (sio_data->type == it8720 && !(reg & (1 << 1))) { + if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) { reg |= (1 << 1); superio_outb(IT87_SIO_PINX2_REG, reg); pr_notice("Routing internal VCCH to in7\n"); @@ -1745,6 +1878,20 @@ static int __init it87_find(unsigned short *address, sio_data->type == it8728) sio_data->internal |= (1 << 1); + /* + * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7. + * While VIN7 can be routed to the internal voltage divider, + * VIN5 and VIN6 are not available if UART6 is enabled. + * + * Also, temp3 is not available if UART6 is enabled and TEMPIN3 + * is the temperature source. Since we can not read the + * temperature source here, skip_temp is preliminary. + */ + if (uart6) { + sio_data->skip_in |= (1 << 5) | (1 << 6); + sio_data->skip_temp |= (1 << 2); + } + sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; } if (sio_data->beep_pin) @@ -1782,8 +1929,22 @@ static void it87_remove_files(struct device *dev) int i; sysfs_remove_group(&dev->kobj, &it87_group); - if (sio_data->beep_pin) - sysfs_remove_group(&dev->kobj, &it87_group_beep); + for (i = 0; i < 9; i++) { + if (sio_data->skip_in & (1 << i)) + continue; + sysfs_remove_group(&dev->kobj, &it87_group_in[i]); + if (it87_attributes_in_beep[i]) + sysfs_remove_file(&dev->kobj, + it87_attributes_in_beep[i]); + } + for (i = 0; i < 3; i++) { + if (!(data->has_temp & (1 << i))) + continue; + sysfs_remove_group(&dev->kobj, &it87_group_temp[i]); + if (sio_data->beep_pin) + sysfs_remove_file(&dev->kobj, + it87_attributes_temp_beep[i]); + } for (i = 0; i < 5; i++) { if (!(data->has_fan & (1 << i))) continue; @@ -1823,22 +1984,22 @@ static int __devinit it87_probe(struct platform_device *pdev) "it8720", "it8721", "it8728", + "it8782", + "it8783", }; res = platform_get_resource(pdev, IORESOURCE_IO, 0); - if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) { + if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT, + DRVNAME)) { dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", (unsigned long)res->start, (unsigned long)(res->start + IT87_EC_EXTENT - 1)); - err = -EBUSY; - goto ERROR0; + return -EBUSY; } - data = kzalloc(sizeof(struct it87_data), GFP_KERNEL); - if (!data) { - err = -ENOMEM; - goto ERROR1; - } + data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL); + if (!data) + return -ENOMEM; data->addr = res->start; data->type = sio_data->type; @@ -1847,10 +2008,8 @@ static int __devinit it87_probe(struct platform_device *pdev) /* Now, we do the remaining detection. */ if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) - || it87_read_value(data, IT87_REG_CHIPID) != 0x90) { - err = -ENODEV; - goto ERROR2; - } + || it87_read_value(data, IT87_REG_CHIPID) != 0x90) + return -ENODEV; platform_set_drvdata(pdev, data); @@ -1867,6 +2026,18 @@ static int __devinit it87_probe(struct platform_device *pdev) data->in_scaled |= (1 << 7); /* in7 is VSB */ if (sio_data->internal & (1 << 2)) data->in_scaled |= (1 << 8); /* in8 is Vbat */ + } else if (sio_data->type == it8782 || sio_data->type == it8783) { + if (sio_data->internal & (1 << 0)) + data->in_scaled |= (1 << 3); /* in3 is VCC5V */ + if (sio_data->internal & (1 << 1)) + data->in_scaled |= (1 << 7); /* in7 is VCCH5V */ + } + + data->has_temp = 0x07; + if (sio_data->skip_temp & (1 << 2)) { + if (sio_data->type == it8782 + && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80)) + data->has_temp &= ~(1 << 2); } /* Initialize the IT87 chip */ @@ -1875,12 +2046,34 @@ static int __devinit it87_probe(struct platform_device *pdev) /* Register sysfs hooks */ err = sysfs_create_group(&dev->kobj, &it87_group); if (err) - goto ERROR2; + return err; - if (sio_data->beep_pin) { - err = sysfs_create_group(&dev->kobj, &it87_group_beep); + for (i = 0; i < 9; i++) { + if (sio_data->skip_in & (1 << i)) + continue; + err = sysfs_create_group(&dev->kobj, &it87_group_in[i]); if (err) - goto ERROR4; + goto error; + if (sio_data->beep_pin && it87_attributes_in_beep[i]) { + err = sysfs_create_file(&dev->kobj, + it87_attributes_in_beep[i]); + if (err) + goto error; + } + } + + for (i = 0; i < 3; i++) { + if (!(data->has_temp & (1 << i))) + continue; + err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]); + if (err) + goto error; + if (sio_data->beep_pin) { + err = sysfs_create_file(&dev->kobj, + it87_attributes_temp_beep[i]); + if (err) + goto error; + } } /* Do not create fan files for disabled fans */ @@ -1891,13 +2084,13 @@ static int __devinit it87_probe(struct platform_device *pdev) continue; err = sysfs_create_group(&dev->kobj, &fan_group[i]); if (err) - goto ERROR4; + goto error; if (sio_data->beep_pin) { err = sysfs_create_file(&dev->kobj, it87_attributes_fan_beep[i]); if (err) - goto ERROR4; + goto error; if (!fan_beep_need_rw) continue; @@ -1922,14 +2115,14 @@ static int __devinit it87_probe(struct platform_device *pdev) err = sysfs_create_group(&dev->kobj, &it87_group_pwm[i]); if (err) - goto ERROR4; + goto error; if (!has_old_autopwm(data)) continue; err = sysfs_create_group(&dev->kobj, &it87_group_autopwm[i]); if (err) - goto ERROR4; + goto error; } } @@ -1939,7 +2132,7 @@ static int __devinit it87_probe(struct platform_device *pdev) data->vid = sio_data->vid_value; err = sysfs_create_group(&dev->kobj, &it87_group_vid); if (err) - goto ERROR4; + goto error; } /* Export labels for internal sensors */ @@ -1949,25 +2142,19 @@ static int __devinit it87_probe(struct platform_device *pdev) err = sysfs_create_file(&dev->kobj, it87_attributes_label[i]); if (err) - goto ERROR4; + goto error; } data->hwmon_dev = hwmon_device_register(dev); if (IS_ERR(data->hwmon_dev)) { err = PTR_ERR(data->hwmon_dev); - goto ERROR4; + goto error; } return 0; -ERROR4: +error: it87_remove_files(dev); -ERROR2: - platform_set_drvdata(pdev, NULL); - kfree(data); -ERROR1: - release_region(res->start, IT87_EC_EXTENT); -ERROR0: return err; } @@ -1978,10 +2165,6 @@ static int __devexit it87_remove(struct platform_device *pdev) hwmon_device_unregister(data->hwmon_dev); it87_remove_files(&pdev->dev); - release_region(data->addr, IT87_EC_EXTENT); - platform_set_drvdata(pdev, NULL); - kfree(data); - return 0; } @@ -2143,8 +2326,9 @@ static void __devinit it87_init_device(struct platform_device *pdev) it87_write_value(data, IT87_REG_FAN_16BIT, tmp | 0x07); } - /* IT8705F only supports three fans. */ - if (data->type != it87) { + /* IT8705F, IT8782F, and IT8783E/F only support three fans. */ + if (data->type != it87 && data->type != it8782 && + data->type != it8783) { if (tmp & (1 << 4)) data->has_fan |= (1 << 3); /* fan4 enabled */ if (tmp & (1 << 5)) @@ -2233,6 +2417,8 @@ static struct it87_data *it87_update_device(struct device *dev) } } for (i = 0; i < 3; i++) { + if (!(data->has_temp & (1 << i))) + continue; data->temp[i] = it87_read_value(data, IT87_REG_TEMP(i)); data->temp_high[i] = |