// SPDX-License-Identifier: GPL-2.0-only /* * pc87427.c - hardware monitoring driver for the * National Semiconductor PC87427 Super-I/O chip * Copyright (C) 2006, 2008, 2010 Jean Delvare <[email protected]> * * Supports the following chips: * * Chip #vin #fan #pwm #temp devid * PC87427 - 8 4 6 0xF2 * * This driver assumes that no more than one chip is present. * Only fans are fully supported so far. Temperatures are in read-only * mode, and voltages aren't supported at all. */ #define pr_fmt(fmt) … #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/err.h> #include <linux/mutex.h> #include <linux/sysfs.h> #include <linux/ioport.h> #include <linux/acpi.h> #include <linux/io.h> static unsigned short force_id; module_param(force_id, ushort, 0); MODULE_PARM_DESC(…) …; static struct platform_device *pdev; #define DRVNAME … /* * The lock mutex protects both the I/O accesses (needed because the * device is using banked registers) and the register cache (needed to keep * the data in the registers and the cache in sync at any time). */ struct pc87427_data { … }; struct pc87427_sio_data { … }; /* * Super-I/O registers and operations */ #define SIOREG_LDSEL … #define SIOREG_DEVID … #define SIOREG_CF2 … #define SIOREG_CF3 … #define SIOREG_CF4 … #define SIOREG_CF5 … #define SIOREG_CFB … #define SIOREG_CFC … #define SIOREG_CFD … #define SIOREG_ACT … #define SIOREG_MAP … #define SIOREG_IOBASE … static const u8 logdev[2] = …; static const char *logdev_str[2] = …; #define LD_FAN … #define LD_IN … #define LD_TEMP … static inline int superio_enter(int sioaddr) { … } static inline void superio_outb(int sioaddr, int reg, int val) { … } static inline int superio_inb(int sioaddr, int reg) { … } static inline void superio_exit(int sioaddr) { … } /* * Logical devices */ #define REGION_LENGTH … #define PC87427_REG_BANK … #define BANK_FM(nr) … #define BANK_FT(nr) … #define BANK_FC(nr) … #define BANK_TM(nr) … #define BANK_VM(nr) … /* * I/O access functions */ /* ldi is the logical device index */ static inline int pc87427_read8(struct pc87427_data *data, u8 ldi, u8 reg) { … } /* Must be called with data->lock held, except during init */ static inline int pc87427_read8_bank(struct pc87427_data *data, u8 ldi, u8 bank, u8 reg) { … } /* Must be called with data->lock held, except during init */ static inline void pc87427_write8_bank(struct pc87427_data *data, u8 ldi, u8 bank, u8 reg, u8 value) { … } /* * Fan registers and conversions */ /* fan data registers are 16-bit wide */ #define PC87427_REG_FAN … #define PC87427_REG_FAN_MIN … #define PC87427_REG_FAN_STATUS … #define FAN_STATUS_STALL … #define FAN_STATUS_LOSPD … #define FAN_STATUS_MONEN … /* * Dedicated function to read all registers related to a given fan input. * This saves us quite a few locks and bank selections. * Must be called with data->lock held. * nr is from 0 to 7 */ static void pc87427_readall_fan(struct pc87427_data *data, u8 nr) { … } /* * The 2 LSB of fan speed registers are used for something different. * The actual 2 LSB of the measurements are not available. */ static inline unsigned long fan_from_reg(u16 reg) { … } /* The 2 LSB of the fan speed limit registers are not significant. */ static inline u16 fan_to_reg(unsigned long val) { … } /* * PWM registers and conversions */ #define PC87427_REG_PWM_ENABLE … #define PC87427_REG_PWM_DUTY … #define PWM_ENABLE_MODE_MASK … #define PWM_ENABLE_CTLEN … #define PWM_MODE_MANUAL … #define PWM_MODE_AUTO … #define PWM_MODE_OFF … #define PWM_MODE_ON … /* * Dedicated function to read all registers related to a given PWM output. * This saves us quite a few locks and bank selections. * Must be called with data->lock held. * nr is from 0 to 3 */ static void pc87427_readall_pwm(struct pc87427_data *data, u8 nr) { … } static inline int pwm_enable_from_reg(u8 reg) { … } static inline u8 pwm_enable_to_reg(unsigned long val, u8 pwmval) { … } /* * Temperature registers and conversions */ #define PC87427_REG_TEMP_STATUS … #define PC87427_REG_TEMP … #define PC87427_REG_TEMP_MAX … #define PC87427_REG_TEMP_MIN … #define PC87427_REG_TEMP_CRIT … #define PC87427_REG_TEMP_TYPE … #define TEMP_STATUS_CHANEN … #define TEMP_STATUS_LOWFLG … #define TEMP_STATUS_HIGHFLG … #define TEMP_STATUS_CRITFLG … #define TEMP_STATUS_SENSERR … #define TEMP_TYPE_MASK … #define TEMP_TYPE_THERMISTOR … #define TEMP_TYPE_REMOTE_DIODE … #define TEMP_TYPE_LOCAL_DIODE … /* * Dedicated function to read all registers related to a given temperature * input. This saves us quite a few locks and bank selections. * Must be called with data->lock held. * nr is from 0 to 5 */ static void pc87427_readall_temp(struct pc87427_data *data, u8 nr) { … } static inline unsigned int temp_type_from_reg(u8 reg) { … } /* * We assume 8-bit thermal sensors; 9-bit thermal sensors are possible * too, but I have no idea how to figure out when they are used. */ static inline long temp_from_reg(s16 reg) { … } static inline long temp_from_reg8(s8 reg) { … } /* * Data interface */ static struct pc87427_data *pc87427_update_device(struct device *dev) { … } static ssize_t fan_input_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t fan_min_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t fan_alarm_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t fan_fault_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t fan_min_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { … } static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0); static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); static SENSOR_DEVICE_ATTR_RO(fan3_input, fan_input, 2); static SENSOR_DEVICE_ATTR_RO(fan4_input, fan_input, 3); static SENSOR_DEVICE_ATTR_RO(fan5_input, fan_input, 4); static SENSOR_DEVICE_ATTR_RO(fan6_input, fan_input, 5); static SENSOR_DEVICE_ATTR_RO(fan7_input, fan_input, 6); static SENSOR_DEVICE_ATTR_RO(fan8_input, fan_input, 7); static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2); static SENSOR_DEVICE_ATTR_RW(fan4_min, fan_min, 3); static SENSOR_DEVICE_ATTR_RW(fan5_min, fan_min, 4); static SENSOR_DEVICE_ATTR_RW(fan6_min, fan_min, 5); static SENSOR_DEVICE_ATTR_RW(fan7_min, fan_min, 6); static SENSOR_DEVICE_ATTR_RW(fan8_min, fan_min, 7); static SENSOR_DEVICE_ATTR_RO(fan1_alarm, fan_alarm, 0); static SENSOR_DEVICE_ATTR_RO(fan2_alarm, fan_alarm, 1); static SENSOR_DEVICE_ATTR_RO(fan3_alarm, fan_alarm, 2); static SENSOR_DEVICE_ATTR_RO(fan4_alarm, fan_alarm, 3); static SENSOR_DEVICE_ATTR_RO(fan5_alarm, fan_alarm, 4); static SENSOR_DEVICE_ATTR_RO(fan6_alarm, fan_alarm, 5); static SENSOR_DEVICE_ATTR_RO(fan7_alarm, fan_alarm, 6); static SENSOR_DEVICE_ATTR_RO(fan8_alarm, fan_alarm, 7); static SENSOR_DEVICE_ATTR_RO(fan1_fault, fan_fault, 0); static SENSOR_DEVICE_ATTR_RO(fan2_fault, fan_fault, 1); static SENSOR_DEVICE_ATTR_RO(fan3_fault, fan_fault, 2); static SENSOR_DEVICE_ATTR_RO(fan4_fault, fan_fault, 3); static SENSOR_DEVICE_ATTR_RO(fan5_fault, fan_fault, 4); static SENSOR_DEVICE_ATTR_RO(fan6_fault, fan_fault, 5); static SENSOR_DEVICE_ATTR_RO(fan7_fault, fan_fault, 6); static SENSOR_DEVICE_ATTR_RO(fan8_fault, fan_fault, 7); static struct attribute *pc87427_attributes_fan[8][5] = …; static const struct attribute_group pc87427_group_fan[8] = …; /* * Must be called with data->lock held and pc87427_readall_pwm() freshly * called */ static void update_pwm_enable(struct pc87427_data *data, int nr, u8 mode) { … } static ssize_t pwm_enable_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t pwm_enable_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { … } static ssize_t pwm_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t pwm_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { … } static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_enable, 0); static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_enable, 1); static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_enable, 2); static SENSOR_DEVICE_ATTR_RW(pwm4_enable, pwm_enable, 3); static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0); static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1); static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, 2); static SENSOR_DEVICE_ATTR_RW(pwm4, pwm, 3); static struct attribute *pc87427_attributes_pwm[4][3] = …; static const struct attribute_group pc87427_group_pwm[4] = …; static ssize_t temp_input_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t temp_min_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t temp_max_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t temp_crit_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t temp_type_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t temp_min_alarm_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t temp_max_alarm_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t temp_crit_alarm_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t temp_fault_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0); static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1); static SENSOR_DEVICE_ATTR_RO(temp3_input, temp_input, 2); static SENSOR_DEVICE_ATTR_RO(temp4_input, temp_input, 3); static SENSOR_DEVICE_ATTR_RO(temp5_input, temp_input, 4); static SENSOR_DEVICE_ATTR_RO(temp6_input, temp_input, 5); static SENSOR_DEVICE_ATTR_RO(temp1_min, temp_min, 0); static SENSOR_DEVICE_ATTR_RO(temp2_min, temp_min, 1); static SENSOR_DEVICE_ATTR_RO(temp3_min, temp_min, 2); static SENSOR_DEVICE_ATTR_RO(temp4_min, temp_min, 3); static SENSOR_DEVICE_ATTR_RO(temp5_min, temp_min, 4); static SENSOR_DEVICE_ATTR_RO(temp6_min, temp_min, 5); static SENSOR_DEVICE_ATTR_RO(temp1_max, temp_max, 0); static SENSOR_DEVICE_ATTR_RO(temp2_max, temp_max, 1); static SENSOR_DEVICE_ATTR_RO(temp3_max, temp_max, 2); static SENSOR_DEVICE_ATTR_RO(temp4_max, temp_max, 3); static SENSOR_DEVICE_ATTR_RO(temp5_max, temp_max, 4); static SENSOR_DEVICE_ATTR_RO(temp6_max, temp_max, 5); static SENSOR_DEVICE_ATTR_RO(temp1_crit, temp_crit, 0); static SENSOR_DEVICE_ATTR_RO(temp2_crit, temp_crit, 1); static SENSOR_DEVICE_ATTR_RO(temp3_crit, temp_crit, 2); static SENSOR_DEVICE_ATTR_RO(temp4_crit, temp_crit, 3); static SENSOR_DEVICE_ATTR_RO(temp5_crit, temp_crit, 4); static SENSOR_DEVICE_ATTR_RO(temp6_crit, temp_crit, 5); static SENSOR_DEVICE_ATTR_RO(temp1_type, temp_type, 0); static SENSOR_DEVICE_ATTR_RO(temp2_type, temp_type, 1); static SENSOR_DEVICE_ATTR_RO(temp3_type, temp_type, 2); static SENSOR_DEVICE_ATTR_RO(temp4_type, temp_type, 3); static SENSOR_DEVICE_ATTR_RO(temp5_type, temp_type, 4); static SENSOR_DEVICE_ATTR_RO(temp6_type, temp_type, 5); static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, temp_min_alarm, 0); static SENSOR_DEVICE_ATTR_RO(temp2_min_alarm, temp_min_alarm, 1); static SENSOR_DEVICE_ATTR_RO(temp3_min_alarm, temp_min_alarm, 2); static SENSOR_DEVICE_ATTR_RO(temp4_min_alarm, temp_min_alarm, 3); static SENSOR_DEVICE_ATTR_RO(temp5_min_alarm, temp_min_alarm, 4); static SENSOR_DEVICE_ATTR_RO(temp6_min_alarm, temp_min_alarm, 5); static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, temp_max_alarm, 0); static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, temp_max_alarm, 1); static SENSOR_DEVICE_ATTR_RO(temp3_max_alarm, temp_max_alarm, 2); static SENSOR_DEVICE_ATTR_RO(temp4_max_alarm, temp_max_alarm, 3); static SENSOR_DEVICE_ATTR_RO(temp5_max_alarm, temp_max_alarm, 4); static SENSOR_DEVICE_ATTR_RO(temp6_max_alarm, temp_max_alarm, 5); static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, temp_crit_alarm, 0); static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, temp_crit_alarm, 1); static SENSOR_DEVICE_ATTR_RO(temp3_crit_alarm, temp_crit_alarm, 2); static SENSOR_DEVICE_ATTR_RO(temp4_crit_alarm, temp_crit_alarm, 3); static SENSOR_DEVICE_ATTR_RO(temp5_crit_alarm, temp_crit_alarm, 4); static SENSOR_DEVICE_ATTR_RO(temp6_crit_alarm, temp_crit_alarm, 5); static SENSOR_DEVICE_ATTR_RO(temp1_fault, temp_fault, 0); static SENSOR_DEVICE_ATTR_RO(temp2_fault, temp_fault, 1); static SENSOR_DEVICE_ATTR_RO(temp3_fault, temp_fault, 2); static SENSOR_DEVICE_ATTR_RO(temp4_fault, temp_fault, 3); static SENSOR_DEVICE_ATTR_RO(temp5_fault, temp_fault, 4); static SENSOR_DEVICE_ATTR_RO(temp6_fault, temp_fault, 5); static struct attribute *pc87427_attributes_temp[6][10] = …; static const struct attribute_group pc87427_group_temp[6] = …; static ssize_t name_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static DEVICE_ATTR_RO(name); /* * Device detection, attach and detach */ static int pc87427_request_regions(struct platform_device *pdev, int count) { … } static void pc87427_init_device(struct device *dev) { … } static void pc87427_remove_files(struct device *dev) { … } static int pc87427_probe(struct platform_device *pdev) { … } static void pc87427_remove(struct platform_device *pdev) { … } static struct platform_driver pc87427_driver = …; static int __init pc87427_device_add(const struct pc87427_sio_data *sio_data) { … } static int __init pc87427_find(int sioaddr, struct pc87427_sio_data *sio_data) { … } static int __init pc87427_init(void) { … } static void __exit pc87427_exit(void) { … } MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; module_init(…) …; module_exit(pc87427_exit);
Codebase Browser
linux