// SPDX-License-Identifier: GPL-2.0-or-later /* * nct7802 - Driver for Nuvoton NCT7802Y * * Copyright (C) 2014 Guenter Roeck <[email protected]> */ #define pr_fmt(fmt) … #include <linux/err.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/jiffies.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/regmap.h> #include <linux/slab.h> #define DRVNAME … static const u8 REG_VOLTAGE[5] = …; static const u8 REG_VOLTAGE_LIMIT_LSB[2][5] = …; static const u8 REG_VOLTAGE_LIMIT_MSB[5] = …; static const u8 REG_VOLTAGE_LIMIT_MSB_SHIFT[2][5] = …; #define REG_BANK … #define REG_TEMP_LSB … #define REG_TEMP_PECI_LSB … #define REG_VOLTAGE_LOW … #define REG_FANCOUNT_LOW … #define REG_START … #define REG_MODE … #define REG_PECI_ENABLE … #define REG_FAN_ENABLE … #define REG_VMON_ENABLE … #define REG_PWM(x) … #define REG_SMARTFAN_EN(x) … #define SMARTFAN_EN_SHIFT(x) … #define REG_VENDOR_ID … #define REG_CHIP_ID … #define REG_VERSION_ID … /* * Resistance temperature detector (RTD) modes according to 7.2.32 Mode * Selection Register */ #define RTD_MODE_CURRENT … #define RTD_MODE_THERMISTOR … #define RTD_MODE_VOLTAGE … #define MODE_RTD_MASK … #define MODE_LTD_EN … /* * Bit offset for sensors modes in REG_MODE. * Valid for index 0..2, indicating RTD1..3. */ #define MODE_BIT_OFFSET_RTD(index) … /* * Data structures and manipulation thereof */ struct nct7802_data { … }; static ssize_t temp_type_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t temp_type_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t pwm_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { … } 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 ssize_t pwm_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t pwm_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static int nct7802_read_temp(struct nct7802_data *data, u8 reg_temp, u8 reg_temp_low, int *temp) { … } static int nct7802_read_fan(struct nct7802_data *data, u8 reg_fan) { … } static int nct7802_read_fan_min(struct nct7802_data *data, u8 reg_fan_low, u8 reg_fan_high) { … } static int nct7802_write_fan_min(struct nct7802_data *data, u8 reg_fan_low, u8 reg_fan_high, unsigned long limit) { … } static u8 nct7802_vmul[] = …; static int nct7802_read_voltage(struct nct7802_data *data, int nr, int index) { … } static int nct7802_write_voltage(struct nct7802_data *data, int nr, int index, unsigned long voltage) { … } static ssize_t in_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t in_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t in_alarm_show(struct device *dev, struct device_attribute *attr, char *buf) { … } 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) { … } static ssize_t fan_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t fan_min_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t beep_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t beep_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static SENSOR_DEVICE_ATTR_RW(temp1_type, temp_type, 0); static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, 0x01, REG_TEMP_LSB); static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, 0x31, 0); static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, 0x30, 0); static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, 0x3a, 0); static SENSOR_DEVICE_ATTR_RW(temp2_type, temp_type, 1); static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, 0x02, REG_TEMP_LSB); static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, 0x33, 0); static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, 0x32, 0); static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, 0x3b, 0); static SENSOR_DEVICE_ATTR_RW(temp3_type, temp_type, 2); static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, 0x03, REG_TEMP_LSB); static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, 0x35, 0); static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, 0x34, 0); static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, 0x3c, 0); static SENSOR_DEVICE_ATTR_2_RO(temp4_input, temp, 0x04, 0); static SENSOR_DEVICE_ATTR_2_RW(temp4_min, temp, 0x37, 0); static SENSOR_DEVICE_ATTR_2_RW(temp4_max, temp, 0x36, 0); static SENSOR_DEVICE_ATTR_2_RW(temp4_crit, temp, 0x3d, 0); static SENSOR_DEVICE_ATTR_2_RO(temp5_input, temp, 0x06, REG_TEMP_PECI_LSB); static SENSOR_DEVICE_ATTR_2_RW(temp5_min, temp, 0x39, 0); static SENSOR_DEVICE_ATTR_2_RW(temp5_max, temp, 0x38, 0); static SENSOR_DEVICE_ATTR_2_RW(temp5_crit, temp, 0x3e, 0); static SENSOR_DEVICE_ATTR_2_RO(temp6_input, temp, 0x07, REG_TEMP_PECI_LSB); static SENSOR_DEVICE_ATTR_2_RO(temp1_min_alarm, alarm, 0x18, 0); static SENSOR_DEVICE_ATTR_2_RO(temp2_min_alarm, alarm, 0x18, 1); static SENSOR_DEVICE_ATTR_2_RO(temp3_min_alarm, alarm, 0x18, 2); static SENSOR_DEVICE_ATTR_2_RO(temp4_min_alarm, alarm, 0x18, 3); static SENSOR_DEVICE_ATTR_2_RO(temp5_min_alarm, alarm, 0x18, 4); static SENSOR_DEVICE_ATTR_2_RO(temp1_max_alarm, alarm, 0x19, 0); static SENSOR_DEVICE_ATTR_2_RO(temp2_max_alarm, alarm, 0x19, 1); static SENSOR_DEVICE_ATTR_2_RO(temp3_max_alarm, alarm, 0x19, 2); static SENSOR_DEVICE_ATTR_2_RO(temp4_max_alarm, alarm, 0x19, 3); static SENSOR_DEVICE_ATTR_2_RO(temp5_max_alarm, alarm, 0x19, 4); static SENSOR_DEVICE_ATTR_2_RO(temp1_crit_alarm, alarm, 0x1b, 0); static SENSOR_DEVICE_ATTR_2_RO(temp2_crit_alarm, alarm, 0x1b, 1); static SENSOR_DEVICE_ATTR_2_RO(temp3_crit_alarm, alarm, 0x1b, 2); static SENSOR_DEVICE_ATTR_2_RO(temp4_crit_alarm, alarm, 0x1b, 3); static SENSOR_DEVICE_ATTR_2_RO(temp5_crit_alarm, alarm, 0x1b, 4); static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, alarm, 0x17, 0); static SENSOR_DEVICE_ATTR_2_RO(temp2_fault, alarm, 0x17, 1); static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, alarm, 0x17, 2); static SENSOR_DEVICE_ATTR_2_RW(temp1_beep, beep, 0x5c, 0); static SENSOR_DEVICE_ATTR_2_RW(temp2_beep, beep, 0x5c, 1); static SENSOR_DEVICE_ATTR_2_RW(temp3_beep, beep, 0x5c, 2); static SENSOR_DEVICE_ATTR_2_RW(temp4_beep, beep, 0x5c, 3); static SENSOR_DEVICE_ATTR_2_RW(temp5_beep, beep, 0x5c, 4); static SENSOR_DEVICE_ATTR_2_RW(temp6_beep, beep, 0x5c, 5); static struct attribute *nct7802_temp_attrs[] = …; static umode_t nct7802_temp_is_visible(struct kobject *kobj, struct attribute *attr, int index) { … } static const struct attribute_group nct7802_temp_group = …; static SENSOR_DEVICE_ATTR_2_RO(in0_input, in, 0, 0); static SENSOR_DEVICE_ATTR_2_RW(in0_min, in, 0, 1); static SENSOR_DEVICE_ATTR_2_RW(in0_max, in, 0, 2); static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, in_alarm, 0, 3); static SENSOR_DEVICE_ATTR_2_RW(in0_beep, beep, 0x5a, 3); static SENSOR_DEVICE_ATTR_2_RO(in1_input, in, 1, 0); static SENSOR_DEVICE_ATTR_2_RO(in2_input, in, 2, 0); static SENSOR_DEVICE_ATTR_2_RW(in2_min, in, 2, 1); static SENSOR_DEVICE_ATTR_2_RW(in2_max, in, 2, 2); static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, in_alarm, 2, 0); static SENSOR_DEVICE_ATTR_2_RW(in2_beep, beep, 0x5a, 0); static SENSOR_DEVICE_ATTR_2_RO(in3_input, in, 3, 0); static SENSOR_DEVICE_ATTR_2_RW(in3_min, in, 3, 1); static SENSOR_DEVICE_ATTR_2_RW(in3_max, in, 3, 2); static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, in_alarm, 3, 1); static SENSOR_DEVICE_ATTR_2_RW(in3_beep, beep, 0x5a, 1); static SENSOR_DEVICE_ATTR_2_RO(in4_input, in, 4, 0); static SENSOR_DEVICE_ATTR_2_RW(in4_min, in, 4, 1); static SENSOR_DEVICE_ATTR_2_RW(in4_max, in, 4, 2); static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, in_alarm, 4, 2); static SENSOR_DEVICE_ATTR_2_RW(in4_beep, beep, 0x5a, 2); static struct attribute *nct7802_in_attrs[] = …; static umode_t nct7802_in_is_visible(struct kobject *kobj, struct attribute *attr, int index) { … } static const struct attribute_group nct7802_in_group = …; static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0x10); static SENSOR_DEVICE_ATTR_2_RW(fan1_min, fan_min, 0x49, 0x4c); static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, alarm, 0x1a, 0); static SENSOR_DEVICE_ATTR_2_RW(fan1_beep, beep, 0x5b, 0); static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 0x11); static SENSOR_DEVICE_ATTR_2_RW(fan2_min, fan_min, 0x4a, 0x4d); static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, alarm, 0x1a, 1); static SENSOR_DEVICE_ATTR_2_RW(fan2_beep, beep, 0x5b, 1); static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 0x12); static SENSOR_DEVICE_ATTR_2_RW(fan3_min, fan_min, 0x4b, 0x4e); static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, alarm, 0x1a, 2); static SENSOR_DEVICE_ATTR_2_RW(fan3_beep, beep, 0x5b, 2); /* 7.2.89 Fan Control Output Type */ static SENSOR_DEVICE_ATTR_RO(pwm1_mode, pwm_mode, 0); static SENSOR_DEVICE_ATTR_RO(pwm2_mode, pwm_mode, 1); static SENSOR_DEVICE_ATTR_RO(pwm3_mode, pwm_mode, 2); /* 7.2.91... Fan Control Output Value */ static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, REG_PWM(0)); static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, REG_PWM(1)); static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, REG_PWM(2)); /* 7.2.95... Temperature to Fan mapping Relationships Register */ 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 struct attribute *nct7802_fan_attrs[] = …; static umode_t nct7802_fan_is_visible(struct kobject *kobj, struct attribute *attr, int index) { … } static const struct attribute_group nct7802_fan_group = …; static struct attribute *nct7802_pwm_attrs[] = …; static const struct attribute_group nct7802_pwm_group = …; /* 7.2.115... 0x80-0x83, 0x84 Temperature (X-axis) transition */ static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_temp, temp, 0x80, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_temp, temp, 0x81, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point3_temp, temp, 0x82, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point4_temp, temp, 0x83, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point5_temp, temp, 0x84, 0); /* 7.2.120... 0x85-0x88 PWM (Y-axis) transition */ static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point1_pwm, pwm, 0x85); static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point2_pwm, pwm, 0x86); static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point3_pwm, pwm, 0x87); static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point4_pwm, pwm, 0x88); static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point5_pwm, pwm, 0); /* 7.2.124 Table 2 X-axis Transition Point 1 Register */ static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_temp, temp, 0x90, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_temp, temp, 0x91, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point3_temp, temp, 0x92, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point4_temp, temp, 0x93, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point5_temp, temp, 0x94, 0); /* 7.2.129 Table 2 Y-axis Transition Point 1 Register */ static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point1_pwm, pwm, 0x95); static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point2_pwm, pwm, 0x96); static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point3_pwm, pwm, 0x97); static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point4_pwm, pwm, 0x98); static SENSOR_DEVICE_ATTR_RO(pwm2_auto_point5_pwm, pwm, 0); /* 7.2.133 Table 3 X-axis Transition Point 1 Register */ static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_temp, temp, 0xA0, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_temp, temp, 0xA1, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point3_temp, temp, 0xA2, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point4_temp, temp, 0xA3, 0); static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point5_temp, temp, 0xA4, 0); /* 7.2.138 Table 3 Y-axis Transition Point 1 Register */ static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point1_pwm, pwm, 0xA5); static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point2_pwm, pwm, 0xA6); static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point3_pwm, pwm, 0xA7); static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point4_pwm, pwm, 0xA8); static SENSOR_DEVICE_ATTR_RO(pwm3_auto_point5_pwm, pwm, 0); static struct attribute *nct7802_auto_point_attrs[] = …; static const struct attribute_group nct7802_auto_point_group = …; static const struct attribute_group *nct7802_groups[] = …; static int nct7802_detect(struct i2c_client *client, struct i2c_board_info *info) { … } static bool nct7802_regmap_is_volatile(struct device *dev, unsigned int reg) { … } static const struct regmap_config nct7802_regmap_config = …; static int nct7802_get_channel_config(struct device *dev, struct device_node *node, u8 *mode_mask, u8 *mode_val) { … } static int nct7802_configure_channels(struct device *dev, struct nct7802_data *data) { … } static int nct7802_init_chip(struct device *dev, struct nct7802_data *data) { … } static int nct7802_probe(struct i2c_client *client) { … } static const unsigned short nct7802_address_list[] = …; static const struct i2c_device_id nct7802_idtable[] = …; MODULE_DEVICE_TABLE(i2c, nct7802_idtable); static struct i2c_driver nct7802_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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