// SPDX-License-Identifier: GPL-2.0-or-later /* * w83627ehf - Driver for the hardware monitoring functionality of * the Winbond W83627EHF Super-I/O chip * Copyright (C) 2005-2012 Jean Delvare <[email protected]> * Copyright (C) 2006 Yuan Mu (Winbond), * Rudolf Marek <[email protected]> * David Hubbard <[email protected]> * Daniel J Blueman <[email protected]> * Copyright (C) 2010 Sheng-Yuan Huang (Nuvoton) (PS00) * * Shamelessly ripped from the w83627hf driver * Copyright (C) 2003 Mark Studebaker * * Thanks to Leon Moonen, Steve Cliffe and Grant Coady for their help * in testing and debugging this driver. * * This driver also supports the W83627EHG, which is the lead-free * version of the W83627EHF. * * Supports the following chips: * * Chip #vin #fan #pwm #temp chip IDs man ID * w83627ehf 10 5 4 3 0x8850 0x88 0x5ca3 * 0x8860 0xa1 * w83627dhg 9 5 4 3 0xa020 0xc1 0x5ca3 * w83627dhg-p 9 5 4 3 0xb070 0xc1 0x5ca3 * w83627uhg 8 2 2 3 0xa230 0xc1 0x5ca3 * w83667hg 9 5 3 3 0xa510 0xc1 0x5ca3 * w83667hg-b 9 5 3 4 0xb350 0xc1 0x5ca3 */ #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/hwmon-vid.h> #include <linux/err.h> #include <linux/mutex.h> #include <linux/acpi.h> #include <linux/io.h> #include "lm75.h" enum kinds { … }; /* used to set data->name = w83627ehf_device_names[data->sio_kind] */ static const char * const w83627ehf_device_names[] = …; static unsigned short force_id; module_param(force_id, ushort, 0); MODULE_PARM_DESC(…) …; #define DRVNAME … /* * Super-I/O constants and functions */ #define W83627EHF_LD_HWM … #define W83667HG_LD_VID … #define SIO_REG_LDSEL … #define SIO_REG_DEVID … #define SIO_REG_EN_VRM10 … #define SIO_REG_ENABLE … #define SIO_REG_ADDR … #define SIO_REG_VID_CTRL … #define SIO_REG_VID_DATA … #define SIO_W83627EHF_ID … #define SIO_W83627EHG_ID … #define SIO_W83627DHG_ID … #define SIO_W83627DHG_P_ID … #define SIO_W83627UHG_ID … #define SIO_W83667HG_ID … #define SIO_W83667HG_B_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 ADDR_REG_OFFSET … #define DATA_REG_OFFSET … #define W83627EHF_REG_BANK … #define W83627EHF_REG_CONFIG … /* * Not currently used: * REG_MAN_ID has the value 0x5ca3 for all supported chips. * REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model. * REG_MAN_ID is at port 0x4f * REG_CHIP_ID is at port 0x58 */ static const u16 W83627EHF_REG_FAN[] = …; static const u16 W83627EHF_REG_FAN_MIN[] = …; /* The W83627EHF registers for nr=7,8,9 are in bank 5 */ #define W83627EHF_REG_IN_MAX(nr) … #define W83627EHF_REG_IN_MIN(nr) … #define W83627EHF_REG_IN(nr) … static const u16 W83627EHF_REG_TEMP[] = …; static const u16 W83627EHF_REG_TEMP_HYST[] = …; static const u16 W83627EHF_REG_TEMP_OVER[] = …; static const u16 W83627EHF_REG_TEMP_CONFIG[] = …; /* Fan clock dividers are spread over the following five registers */ #define W83627EHF_REG_FANDIV1 … #define W83627EHF_REG_FANDIV2 … #define W83627EHF_REG_VBAT … #define W83627EHF_REG_DIODE … #define W83627EHF_REG_SMI_OVT … #define W83627EHF_REG_ALARM1 … #define W83627EHF_REG_ALARM2 … #define W83627EHF_REG_ALARM3 … #define W83627EHF_REG_CASEOPEN_DET … #define W83627EHF_REG_CASEOPEN_CLR … /* SmartFan registers */ #define W83627EHF_REG_FAN_STEPUP_TIME … #define W83627EHF_REG_FAN_STEPDOWN_TIME … /* DC or PWM output fan configuration */ static const u8 W83627EHF_REG_PWM_ENABLE[] = …; static const u8 W83627EHF_PWM_MODE_SHIFT[] = …; static const u8 W83627EHF_PWM_ENABLE_SHIFT[] = …; /* FAN Duty Cycle, be used to control */ static const u16 W83627EHF_REG_PWM[] = …; static const u16 W83627EHF_REG_TARGET[] = …; static const u8 W83627EHF_REG_TOLERANCE[] = …; /* Advanced Fan control, some values are common for all fans */ static const u16 W83627EHF_REG_FAN_START_OUTPUT[] = …; static const u16 W83627EHF_REG_FAN_STOP_OUTPUT[] = …; static const u16 W83627EHF_REG_FAN_STOP_TIME[] = …; static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_COMMON[] = …; static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON[] = …; static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B[] = …; static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B[] = …; static const u16 W83627EHF_REG_TEMP_OFFSET[] = …; static const char *const w83667hg_b_temp_label[] = …; #define NUM_REG_TEMP … static int is_word_sized(u16 reg) { … } /* * Conversions */ /* 1 is PWM mode, output in ms */ static inline unsigned int step_time_from_reg(u8 reg, u8 mode) { … } static inline u8 step_time_to_reg(unsigned int msec, u8 mode) { … } static unsigned int fan_from_reg8(u16 reg, unsigned int divreg) { … } static inline unsigned int div_from_reg(u8 reg) { … } /* * Some of the voltage inputs have internal scaling, the tables below * contain 8 (the ADC LSB in mV) * scaling factor * 100 */ static const u16 scale_in_common[10] = …; static const u16 scale_in_w83627uhg[9] = …; static inline long in_from_reg(u8 reg, u8 nr, const u16 *scale_in) { … } static inline u8 in_to_reg(u32 val, u8 nr, const u16 *scale_in) { … } /* * Data structures and manipulation thereof */ struct w83627ehf_data { … }; struct w83627ehf_sio_data { … }; /* * On older chips, only registers 0x50-0x5f are banked. * On more recent chips, all registers are banked. * Assume that is the case and set the bank number for each access. * Cache the bank number so it only needs to be set if it changes. */ static inline void w83627ehf_set_bank(struct w83627ehf_data *data, u16 reg) { … } static u16 w83627ehf_read_value(struct w83627ehf_data *data, u16 reg) { … } static int w83627ehf_write_value(struct w83627ehf_data *data, u16 reg, u16 value) { … } /* We left-align 8-bit temperature values to make the code simpler */ static u16 w83627ehf_read_temp(struct w83627ehf_data *data, u16 reg) { … } static int w83627ehf_write_temp(struct w83627ehf_data *data, u16 reg, u16 value) { … } /* This function assumes that the caller holds data->update_lock */ static void w83627ehf_write_fan_div(struct w83627ehf_data *data, int nr) { … } static void w83627ehf_update_fan_div(struct w83627ehf_data *data) { … } static void w83627ehf_update_pwm(struct w83627ehf_data *data) { … } static struct w83627ehf_data *w83627ehf_update_device(struct device *dev) { … } #define store_in_reg(REG, reg) … store_in_reg(…) store_in_reg(…) static int store_fan_min(struct device *dev, struct w83627ehf_data *data, int channel, long val) { … } #define store_temp_reg(addr, reg) … store_temp_reg(reg_temp_over, temp_max); store_temp_reg(reg_temp_hyst, temp_max_hyst); static int store_temp_offset(struct device *dev, struct w83627ehf_data *data, int channel, long val) { … } static int store_pwm_mode(struct device *dev, struct w83627ehf_data *data, int channel, long val) { … } static int store_pwm(struct device *dev, struct w83627ehf_data *data, int channel, long val) { … } static int store_pwm_enable(struct device *dev, struct w83627ehf_data *data, int channel, long val) { … } #define show_tol_temp(reg) … show_tol_temp(…) … show_tol_temp(…) … static ssize_t store_target_temp(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t store_tolerance(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static SENSOR_DEVICE_ATTR(pwm1_target, 0644, show_target_temp, store_target_temp, 0); static SENSOR_DEVICE_ATTR(pwm2_target, 0644, show_target_temp, store_target_temp, 1); static SENSOR_DEVICE_ATTR(pwm3_target, 0644, show_target_temp, store_target_temp, 2); static SENSOR_DEVICE_ATTR(pwm4_target, 0644, show_target_temp, store_target_temp, 3); static SENSOR_DEVICE_ATTR(pwm1_tolerance, 0644, show_tolerance, store_tolerance, 0); static SENSOR_DEVICE_ATTR(pwm2_tolerance, 0644, show_tolerance, store_tolerance, 1); static SENSOR_DEVICE_ATTR(pwm3_tolerance, 0644, show_tolerance, store_tolerance, 2); static SENSOR_DEVICE_ATTR(pwm4_tolerance, 0644, show_tolerance, store_tolerance, 3); /* Smart Fan registers */ #define fan_functions(reg, REG) … fan_functions(…) … fan_functions(…) … fan_functions(…) … fan_functions(…) … #define fan_time_functions(reg, REG) … \ fan_time_functions(…) … static SENSOR_DEVICE_ATTR(pwm4_stop_time, 0644, show_fan_stop_time, store_fan_stop_time, 3); static SENSOR_DEVICE_ATTR(pwm4_start_output, 0644, show_fan_start_output, store_fan_start_output, 3); static SENSOR_DEVICE_ATTR(pwm4_stop_output, 0644, show_fan_stop_output, store_fan_stop_output, 3); static SENSOR_DEVICE_ATTR(pwm4_max_output, 0644, show_fan_max_output, store_fan_max_output, 3); static SENSOR_DEVICE_ATTR(pwm4_step_output, 0644, show_fan_step_output, store_fan_step_output, 3); static SENSOR_DEVICE_ATTR(pwm3_stop_time, 0644, show_fan_stop_time, store_fan_stop_time, 2); static SENSOR_DEVICE_ATTR(pwm3_start_output, 0644, show_fan_start_output, store_fan_start_output, 2); static SENSOR_DEVICE_ATTR(pwm3_stop_output, 0644, show_fan_stop_output, store_fan_stop_output, 2); static SENSOR_DEVICE_ATTR(pwm1_stop_time, 0644, show_fan_stop_time, store_fan_stop_time, 0); static SENSOR_DEVICE_ATTR(pwm2_stop_time, 0644, show_fan_stop_time, store_fan_stop_time, 1); static SENSOR_DEVICE_ATTR(pwm1_start_output, 0644, show_fan_start_output, store_fan_start_output, 0); static SENSOR_DEVICE_ATTR(pwm2_start_output, 0644, show_fan_start_output, store_fan_start_output, 1); static SENSOR_DEVICE_ATTR(pwm1_stop_output, 0644, show_fan_stop_output, store_fan_stop_output, 0); static SENSOR_DEVICE_ATTR(pwm2_stop_output, 0644, show_fan_stop_output, store_fan_stop_output, 1); /* * pwm1 and pwm3 don't support max and step settings on all chips. * Need to check support while generating/removing attribute files. */ static SENSOR_DEVICE_ATTR(pwm1_max_output, 0644, show_fan_max_output, store_fan_max_output, 0); static SENSOR_DEVICE_ATTR(pwm1_step_output, 0644, show_fan_step_output, store_fan_step_output, 0); static SENSOR_DEVICE_ATTR(pwm2_max_output, 0644, show_fan_max_output, store_fan_max_output, 1); static SENSOR_DEVICE_ATTR(pwm2_step_output, 0644, show_fan_step_output, store_fan_step_output, 1); static SENSOR_DEVICE_ATTR(pwm3_max_output, 0644, show_fan_max_output, store_fan_max_output, 2); static SENSOR_DEVICE_ATTR(pwm3_step_output, 0644, show_fan_step_output, store_fan_step_output, 2); static ssize_t cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(cpu0_vid); /* Case open detection */ static int clear_caseopen(struct device *dev, struct w83627ehf_data *data, int channel, long val) { … } static umode_t w83627ehf_attrs_visible(struct kobject *kobj, struct attribute *a, int n) { … } /* These groups handle non-standard attributes used in this device */ static struct attribute *w83627ehf_attrs[] = …; static const struct attribute_group w83627ehf_group = …; static const struct attribute_group *w83627ehf_groups[] = …; /* * Driver and device management */ /* Get the monitoring functions started */ static inline void w83627ehf_init_device(struct w83627ehf_data *data, enum kinds kind) { … } static void w83627ehf_set_temp_reg_ehf(struct w83627ehf_data *data, int n_temp) { … } static void w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data, struct w83627ehf_data *data) { … } static umode_t w83627ehf_is_visible(const void *drvdata, enum hwmon_sensor_types type, u32 attr, int channel) { … } static int w83627ehf_do_read_temp(struct w83627ehf_data *data, u32 attr, int channel, long *val) { … } static int w83627ehf_do_read_in(struct w83627ehf_data *data, u32 attr, int channel, long *val) { … } static int w83627ehf_do_read_fan(struct w83627ehf_data *data, u32 attr, int channel, long *val) { … } static int w83627ehf_do_read_pwm(struct w83627ehf_data *data, u32 attr, int channel, long *val) { … } static int w83627ehf_do_read_intrusion(struct w83627ehf_data *data, u32 attr, int channel, long *val) { … } static int w83627ehf_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static int w83627ehf_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, const char **str) { … } static int w83627ehf_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long val) { … } static const struct hwmon_ops w83627ehf_ops = …; static const struct hwmon_channel_info * const w83627ehf_info[] = …; static const struct hwmon_chip_info w83627ehf_chip_info = …; static int __init w83627ehf_probe(struct platform_device *pdev) { … } static int w83627ehf_suspend(struct device *dev) { … } static int w83627ehf_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(w83627ehf_dev_pm_ops, w83627ehf_suspend, w83627ehf_resume); static struct platform_driver w83627ehf_driver = …; /* w83627ehf_find() looks for a '627 in the Super-I/O config space */ static int __init w83627ehf_find(int sioaddr, unsigned short *addr, struct w83627ehf_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 w83627ehf driver. */ static struct platform_device *pdev; static int __init sensors_w83627ehf_init(void) { … } static void __exit sensors_w83627ehf_exit(void) { … } MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; module_init(…) …; module_exit(sensors_w83627ehf_exit);
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