// SPDX-License-Identifier: GPL-2.0-or-later /* * nct6683 - Driver for the hardware monitoring functionality of * Nuvoton NCT6683D/NCT6686D/NCT6687D eSIO * * Copyright (C) 2013 Guenter Roeck <[email protected]> * * Derived from nct6775 driver * Copyright (C) 2012, 2013 Guenter Roeck <[email protected]> * * Supports the following chips: * * Chip #vin #fan #pwm #temp chip ID * nct6683d 21(1) 16 8 32(1) 0xc730 * nct6686d 21(1) 16 8 32(1) 0xd440 * nct6687d 21(1) 16 8 32(1) 0xd590 * * Notes: * (1) Total number of vin and temp inputs is 32. */ #define pr_fmt(fmt) … #include <linux/acpi.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/init.h> #include <linux/io.h> #include <linux/jiffies.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/platform_device.h> #include <linux/slab.h> enum kinds { … }; static bool force; module_param(force, bool, 0); MODULE_PARM_DESC(…) …; static const char * const nct6683_device_names[] = …; static const char * const nct6683_chip_names[] = …; #define DRVNAME … /* * Super-I/O constants and functions */ #define NCT6683_LD_ACPI … #define NCT6683_LD_HWM … #define NCT6683_LD_VID … #define SIO_REG_LDSEL … #define SIO_REG_DEVID … #define SIO_REG_ENABLE … #define SIO_REG_ADDR … #define SIO_NCT6681_ID … #define SIO_NCT6683_ID … #define SIO_NCT6686_ID … #define SIO_NCT6687_ID … #define SIO_ID_MASK … static inline void superio_outb(int ioreg, int reg, int val) { … } static inline int superio_inb(int ioreg, int reg) { … } static inline void superio_select(int ioreg, int ld) { … } static inline int superio_enter(int ioreg) { … } static inline void superio_exit(int ioreg) { … } /* * ISA constants */ #define IOREGION_ALIGNMENT … #define IOREGION_OFFSET … #define IOREGION_LENGTH … #define EC_PAGE_REG … #define EC_INDEX_REG … #define EC_DATA_REG … #define EC_EVENT_REG … /* Common and NCT6683 specific data */ #define NCT6683_NUM_REG_MON … #define NCT6683_NUM_REG_FAN … #define NCT6683_NUM_REG_PWM … #define NCT6683_REG_MON(x) … #define NCT6683_REG_FAN_RPM(x) … #define NCT6683_REG_PWM(x) … #define NCT6683_REG_PWM_WRITE(x) … #define NCT6683_REG_MON_STS(x) … #define NCT6683_REG_IDLE(x) … #define NCT6683_REG_FAN_STS(x) … #define NCT6683_REG_FAN_ERRSTS … #define NCT6683_REG_FAN_INITSTS … #define NCT6683_HWM_CFG … #define NCT6683_REG_MON_CFG(x) … #define NCT6683_REG_FANIN_CFG(x) … #define NCT6683_REG_FANOUT_CFG(x) … #define NCT6683_REG_INTEL_TEMP_MAX(x) … #define NCT6683_REG_INTEL_TEMP_CRIT(x) … #define NCT6683_REG_TEMP_HYST(x) … #define NCT6683_REG_TEMP_MAX(x) … #define NCT6683_REG_MON_HIGH(x) … #define NCT6683_REG_MON_LOW(x) … #define NCT6683_REG_FAN_MIN(x) … #define NCT6683_REG_FAN_CFG_CTRL … #define NCT6683_FAN_CFG_REQ … #define NCT6683_FAN_CFG_DONE … #define NCT6683_REG_CUSTOMER_ID … #define NCT6683_CUSTOMER_ID_INTEL … #define NCT6683_CUSTOMER_ID_MITAC … #define NCT6683_CUSTOMER_ID_MSI … #define NCT6683_CUSTOMER_ID_MSI2 … #define NCT6683_CUSTOMER_ID_MSI3 … #define NCT6683_CUSTOMER_ID_ASROCK … #define NCT6683_CUSTOMER_ID_ASROCK2 … #define NCT6683_CUSTOMER_ID_ASROCK3 … #define NCT6683_REG_BUILD_YEAR … #define NCT6683_REG_BUILD_MONTH … #define NCT6683_REG_BUILD_DAY … #define NCT6683_REG_SERIAL … #define NCT6683_REG_VERSION_HI … #define NCT6683_REG_VERSION_LO … #define NCT6683_REG_CR_CASEOPEN … #define NCT6683_CR_CASEOPEN_MASK … #define NCT6683_REG_CR_BEEP … #define NCT6683_CR_BEEP_MASK … static const char *const nct6683_mon_label[] = …; #define NUM_MON_LABELS … #define MON_VOLTAGE_START … /* ------------------------------------------------------- */ struct nct6683_data { … }; struct nct6683_sio_data { … }; struct sensor_device_template { … }; struct sensor_device_attr_u { … }; #define __TEMPLATE_ATTR(_template, _mode, _show, _store) … #define SENSOR_DEVICE_TEMPLATE(_template, _mode, _show, _store, _index) … #define SENSOR_DEVICE_TEMPLATE_2(_template, _mode, _show, _store, \ _nr, _index) … #define SENSOR_TEMPLATE(_name, _template, _mode, _show, _store, _index) … #define SENSOR_TEMPLATE_2(_name, _template, _mode, _show, _store, \ _nr, _index) … struct sensor_template_group { … }; static struct attribute_group * nct6683_create_attr_group(struct device *dev, const struct sensor_template_group *tg, int repeat) { … } /* LSB is 16 mV, except for the following sources, where it is 32 mV */ #define MON_SRC_VCC … #define MON_SRC_VSB … #define MON_SRC_AVSB … #define MON_SRC_VBAT … static inline long in_from_reg(u16 reg, u8 src) { … } static u16 nct6683_read(struct nct6683_data *data, u16 reg) { … } static u16 nct6683_read16(struct nct6683_data *data, u16 reg) { … } static void nct6683_write(struct nct6683_data *data, u16 reg, u16 value) { … } static int get_in_reg(struct nct6683_data *data, int nr, int index) { … } static int get_temp_reg(struct nct6683_data *data, int nr, int index) { … } static void nct6683_update_pwm(struct device *dev) { … } static struct nct6683_data *nct6683_update_device(struct device *dev) { … } /* * Sysfs callback functions */ static ssize_t show_in_label(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t show_in_reg(struct device *dev, struct device_attribute *attr, char *buf) { … } static umode_t nct6683_in_is_visible(struct kobject *kobj, struct attribute *attr, int index) { … } SENSOR_TEMPLATE(in_label, "in%d_label", S_IRUGO, show_in_label, NULL, 0); SENSOR_TEMPLATE_2(in_input, "in%d_input", S_IRUGO, show_in_reg, NULL, 0, 0); SENSOR_TEMPLATE_2(in_min, "in%d_min", S_IRUGO, show_in_reg, NULL, 0, 1); SENSOR_TEMPLATE_2(in_max, "in%d_max", S_IRUGO, show_in_reg, NULL, 0, 2); static struct sensor_device_template *nct6683_attributes_in_template[] = …; static const struct sensor_template_group nct6683_in_template_group = …; static ssize_t show_fan(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t show_fan_pulses(struct device *dev, struct device_attribute *attr, char *buf) { … } static umode_t nct6683_fan_is_visible(struct kobject *kobj, struct attribute *attr, int index) { … } SENSOR_TEMPLATE(fan_input, "fan%d_input", S_IRUGO, show_fan, NULL, 0); SENSOR_TEMPLATE(fan_pulses, "fan%d_pulses", S_IRUGO, show_fan_pulses, NULL, 0); SENSOR_TEMPLATE(fan_min, "fan%d_min", S_IRUGO, show_fan_min, NULL, 0); /* * nct6683_fan_is_visible uses the index into the following array * to determine if attributes should be created or not. * Any change in order or content must be matched. */ static struct sensor_device_template *nct6683_attributes_fan_template[] = …; static const struct sensor_template_group nct6683_fan_template_group = …; static ssize_t show_temp_label(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t show_temp8(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t show_temp16(struct device *dev, struct device_attribute *attr, char *buf) { … } /* * Temperature sensor type is determined by temperature source * and can not be modified. * 0x02..0x07: Thermal diode * 0x08..0x18: Thermistor * 0x20..0x2b: Intel PECI * 0x42..0x49: AMD TSI * Others are unspecified (not visible) */ static int get_temp_type(u8 src) { … } static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr, char *buf) { … } static umode_t nct6683_temp_is_visible(struct kobject *kobj, struct attribute *attr, int index) { … } SENSOR_TEMPLATE(temp_input, "temp%d_input", S_IRUGO, show_temp16, NULL, 0); SENSOR_TEMPLATE(temp_label, "temp%d_label", S_IRUGO, show_temp_label, NULL, 0); SENSOR_TEMPLATE_2(temp_min, "temp%d_min", S_IRUGO, show_temp8, NULL, 0, 0); SENSOR_TEMPLATE_2(temp_max, "temp%d_max", S_IRUGO, show_temp8, NULL, 0, 1); SENSOR_TEMPLATE(temp_max_hyst, "temp%d_max_hyst", S_IRUGO, show_temp_hyst, NULL, 0); SENSOR_TEMPLATE_2(temp_crit, "temp%d_crit", S_IRUGO, show_temp8, NULL, 0, 3); SENSOR_TEMPLATE(temp_type, "temp%d_type", S_IRUGO, show_temp_type, NULL, 0); /* * nct6683_temp_is_visible uses the index into the following array * to determine if attributes should be created or not. * Any change in order or content must be matched. */ static struct sensor_device_template *nct6683_attributes_temp_template[] = …; static const struct sensor_template_group nct6683_temp_template_group = …; static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t store_pwm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } SENSOR_TEMPLATE(pwm, "pwm%d", S_IRUGO, show_pwm, store_pwm, 0); static umode_t nct6683_pwm_is_visible(struct kobject *kobj, struct attribute *attr, int index) { … } static struct sensor_device_template *nct6683_attributes_pwm_template[] = …; static const struct sensor_template_group nct6683_pwm_template_group = …; static ssize_t beep_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t beep_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* Case open detection */ static ssize_t intrusion0_alarm_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t intrusion0_alarm_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static DEVICE_ATTR_RW(intrusion0_alarm); static DEVICE_ATTR_RW(beep_enable); static struct attribute *nct6683_attributes_other[] = …; static const struct attribute_group nct6683_group_other = …; /* Get the monitoring functions started */ static inline void nct6683_init_device(struct nct6683_data *data) { … } /* * There are a total of 24 fan inputs. Each can be configured as input * or as output. A maximum of 16 inputs and 8 outputs is configurable. */ static void nct6683_setup_fans(struct nct6683_data *data) { … } /* * Translation from monitoring register to temperature and voltage attributes * ========================================================================== * * There are a total of 32 monitoring registers. Each can be assigned to either * a temperature or voltage monitoring source. * NCT6683_REG_MON_CFG(x) defines assignment for each monitoring source. * * Temperature and voltage attribute mapping is determined by walking through * the NCT6683_REG_MON_CFG registers. If the assigned source is * a temperature, temp_index[n] is set to the monitor register index, and * temp_src[n] is set to the temperature source. If the assigned source is * a voltage, the respective values are stored in in_index[] and in_src[], * respectively. */ static void nct6683_setup_sensors(struct nct6683_data *data) { … } static int nct6683_probe(struct platform_device *pdev) { … } #ifdef CONFIG_PM static int nct6683_suspend(struct device *dev) { … } static int nct6683_resume(struct device *dev) { … } static const struct dev_pm_ops nct6683_dev_pm_ops = …; #define NCT6683_DEV_PM_OPS … #else #define NCT6683_DEV_PM_OPS … #endif /* CONFIG_PM */ static struct platform_driver nct6683_driver = …; static int __init nct6683_find(int sioaddr, struct nct6683_sio_data *sio_data) { … } /* * when Super-I/O functions move to a separate file, the Super-I/O * bus will manage the lifetime of the device and this module will only keep * track of the nct6683 driver. But since we use platform_device_alloc(), we * must keep track of the device */ static struct platform_device *pdev[2]; static int __init sensors_nct6683_init(void) { … } static void __exit sensors_nct6683_exit(void) { … } MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; module_init(…) …; module_exit(sensors_nct6683_exit);
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