// SPDX-License-Identifier: GPL-2.0-only /* * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives * Copyright (C) 2007-2008, Advanced Micro Devices, Inc. * Copyright (C) 2008 Jordan Crouse <[email protected]> * Copyright (C) 2008 Hans de Goede <[email protected]> * Copyright (C) 2009 Jean Delvare <[email protected]> * * Derived from the lm83 driver by Jean Delvare */ #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/hwmon-vid.h> #include <linux/err.h> #include <linux/jiffies.h> #include <linux/of.h> #include <linux/util_macros.h> /* Indexes for the sysfs hooks */ enum adt_sysfs_id { … }; /* 7475 Common Registers */ #define REG_DEVREV2 … #define REG_IMON … #define REG_VTT … #define REG_EXTEND3 … #define REG_VOLTAGE_BASE … #define REG_TEMP_BASE … #define REG_TACH_BASE … #define REG_PWM_BASE … #define REG_PWM_MAX_BASE … #define REG_DEVID … #define REG_VENDID … #define REG_DEVID2 … #define REG_CONFIG1 … #define REG_STATUS1 … #define REG_STATUS2 … #define REG_VID … #define REG_VOLTAGE_MIN_BASE … #define REG_VOLTAGE_MAX_BASE … #define REG_TEMP_MIN_BASE … #define REG_TEMP_MAX_BASE … #define REG_TACH_MIN_BASE … #define REG_PWM_CONFIG_BASE … #define REG_TEMP_TRANGE_BASE … #define REG_ENHANCE_ACOUSTICS1 … #define REG_ENHANCE_ACOUSTICS2 … #define REG_PWM_MIN_BASE … #define REG_TEMP_TMIN_BASE … #define REG_TEMP_THERM_BASE … #define REG_REMOTE1_HYSTERSIS … #define REG_REMOTE2_HYSTERSIS … #define REG_TEMP_OFFSET_BASE … #define REG_CONFIG2 … #define REG_EXTEND1 … #define REG_EXTEND2 … #define REG_CONFIG3 … #define REG_CONFIG5 … #define REG_CONFIG4 … #define REG_STATUS4 … #define REG_VTT_MIN … #define REG_VTT_MAX … #define REG_IMON_MIN … #define REG_IMON_MAX … #define VID_VIDSEL … #define CONFIG2_ATTN … #define CONFIG3_SMBALERT … #define CONFIG3_THERM … #define CONFIG4_PINFUNC … #define CONFIG4_THERM … #define CONFIG4_SMBALERT … #define CONFIG4_MAXDUTY … #define CONFIG4_ATTN_IN10 … #define CONFIG4_ATTN_IN43 … #define CONFIG5_TWOSCOMP … #define CONFIG5_TEMPOFFSET … #define CONFIG5_VIDGPIO … /* ADT7475 Settings */ #define ADT7475_VOLTAGE_COUNT … #define ADT7475_TEMP_COUNT … #define ADT7475_TACH_COUNT … #define ADT7475_PWM_COUNT … /* Macro to read the registers */ #define adt7475_read(reg) … /* Macros to easily index the registers */ #define TACH_REG(idx) … #define TACH_MIN_REG(idx) … #define PWM_REG(idx) … #define PWM_MAX_REG(idx) … #define PWM_MIN_REG(idx) … #define PWM_CONFIG_REG(idx) … #define VOLTAGE_REG(idx) … #define VOLTAGE_MIN_REG(idx) … #define VOLTAGE_MAX_REG(idx) … #define TEMP_REG(idx) … #define TEMP_MIN_REG(idx) … #define TEMP_MAX_REG(idx) … #define TEMP_TMIN_REG(idx) … #define TEMP_THERM_REG(idx) … #define TEMP_OFFSET_REG(idx) … #define TEMP_TRANGE_REG(idx) … static const unsigned short normal_i2c[] = …; enum chips { … }; static const struct i2c_device_id adt7475_id[] = …; MODULE_DEVICE_TABLE(i2c, adt7475_id); static const struct of_device_id __maybe_unused adt7475_of_match[] = …; MODULE_DEVICE_TABLE(of, adt7475_of_match); struct adt7475_data { … }; static struct i2c_driver adt7475_driver; static struct adt7475_data *adt7475_update_device(struct device *dev); static void adt7475_read_hystersis(struct i2c_client *client); static void adt7475_read_pwm(struct i2c_client *client, int index); /* Given a temp value, convert it to register value */ static inline u16 temp2reg(struct adt7475_data *data, long val) { … } /* Given a register value, convert it to a real temp value */ static inline int reg2temp(struct adt7475_data *data, u16 reg) { … } static inline int tach2rpm(u16 tach) { … } static inline u16 rpm2tach(unsigned long rpm) { … } /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */ static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 2][2] = …; static inline int reg2volt(int channel, u16 reg, u8 bypass_attn) { … } static inline u16 volt2reg(int channel, long volt, u8 bypass_attn) { … } static int adt7475_read_word(struct i2c_client *client, int reg) { … } static void adt7475_write_word(struct i2c_client *client, int reg, u16 val) { … } static ssize_t voltage_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t voltage_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t temp_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t temp_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* Assuming CONFIG6[SLOW] is 0 */ static const int ad7475_st_map[] = …; static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t temp_st_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* * Table of autorange values - the user will write the value in millidegrees, * and we'll convert it */ static const int autorange_table[] = …; static ssize_t point2_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t point2_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t tach_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t tach_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t stall_disable_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t stall_disable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* Called by set_pwmctrl and set_pwmchan */ static int hw_set_pwm(struct i2c_client *client, int index, unsigned int pwmctl, unsigned int pwmchan) { … } static ssize_t pwmchan_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t pwmctrl_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* List of frequencies for the PWM */ static const int pwmfreq_table[] = …; static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t pwmfreq_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { … } static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { … } static ssize_t cpu0_vid_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0); static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0); static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0); static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0); static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1); static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1); static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1); static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1); static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2); static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2); static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2); static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2); static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3); static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3); static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3); static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3); static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4); static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4); static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4); static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8); static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5); static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5); static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5); static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31); static SENSOR_DEVICE_ATTR_2_RO(in6_input, voltage, INPUT, 6); static SENSOR_DEVICE_ATTR_2_RW(in6_max, voltage, MAX, 6); static SENSOR_DEVICE_ATTR_2_RW(in6_min, voltage, MIN, 6); static SENSOR_DEVICE_ATTR_2_RO(in6_alarm, voltage, ALARM, 30); static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0); static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0); static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0); static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0); static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0); static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0); static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0); static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0); static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0); static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0); static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0); static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1); static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1); static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1); static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1); static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1); static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1); static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1); static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1); static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1); static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1); static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2); static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2); static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2); static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2); static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2); static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2); static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2); static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2); static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2); static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2); static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2); static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0); static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0); static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0); static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1); static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1); static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1); static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2); static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2); static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2); static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3); static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3); static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3); static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1); static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1); static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1); static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1); static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1); static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1); static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1); static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2); static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2); static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2); static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2); static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2); static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2); static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2); /* Non-standard name, might need revisiting */ static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit); static DEVICE_ATTR_RW(vrm); static DEVICE_ATTR_RO(cpu0_vid); static struct attribute *adt7475_attrs[] = …; static struct attribute *fan4_attrs[] = …; static struct attribute *pwm2_attrs[] = …; static struct attribute *in0_attrs[] = …; static struct attribute *in3_attrs[] = …; static struct attribute *in4_attrs[] = …; static struct attribute *in5_attrs[] = …; static struct attribute *in6_attrs[] = …; static struct attribute *vid_attrs[] = …; static const struct attribute_group adt7475_attr_group = …; static const struct attribute_group fan4_attr_group = …; static const struct attribute_group pwm2_attr_group = …; static const struct attribute_group in0_attr_group = …; static const struct attribute_group in3_attr_group = …; static const struct attribute_group in4_attr_group = …; static const struct attribute_group in5_attr_group = …; static const struct attribute_group in6_attr_group = …; static const struct attribute_group vid_attr_group = …; static int adt7475_detect(struct i2c_client *client, struct i2c_board_info *info) { … } static int adt7475_update_limits(struct i2c_client *client) { … } static int load_config3(const struct i2c_client *client, const char *propname) { … } static int load_config4(const struct i2c_client *client, const char *propname) { … } static int load_config(const struct i2c_client *client, enum chips chip) { … } static int set_property_bit(const struct i2c_client *client, char *property, u8 *config, u8 bit_index) { … } static int load_attenuators(const struct i2c_client *client, enum chips chip, struct adt7475_data *data) { … } static int adt7475_set_pwm_polarity(struct i2c_client *client) { … } static int adt7475_probe(struct i2c_client *client) { … } static struct i2c_driver adt7475_driver = …; static void adt7475_read_hystersis(struct i2c_client *client) { … } static void adt7475_read_pwm(struct i2c_client *client, int index) { … } static int adt7475_update_measure(struct device *dev) { … } static struct adt7475_data *adt7475_update_device(struct device *dev) { … } module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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