// SPDX-License-Identifier: GPL-2.0-or-later /* * asb100.c - Part of lm_sensors, Linux kernel modules for hardware * monitoring * * Copyright (C) 2004 Mark M. Hoffman <[email protected]> * * (derived from w83781d.c) * * Copyright (C) 1998 - 2003 Frodo Looijaard <[email protected]>, * Philip Edelbrock <[email protected]>, and * Mark Studebaker <[email protected]> */ /* * This driver supports the hardware sensor chips: Asus ASB100 and * ASB100-A "BACH". * * ASB100-A supports pwm1, while plain ASB100 does not. There is no known * way for the driver to tell which one is there. * * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA * asb100 7 3 1 4 0x31 0x0694 yes no */ #define pr_fmt(fmt) … #include <linux/module.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/init.h> #include <linux/jiffies.h> #include <linux/mutex.h> #include "lm75.h" /* I2C addresses to scan */ static const unsigned short normal_i2c[] = …; static unsigned short force_subclients[4]; module_param_array(…); MODULE_PARM_DESC(…) …; /* Voltage IN registers 0-6 */ #define ASB100_REG_IN(nr) … #define ASB100_REG_IN_MAX(nr) … #define ASB100_REG_IN_MIN(nr) … /* FAN IN registers 1-3 */ #define ASB100_REG_FAN(nr) … #define ASB100_REG_FAN_MIN(nr) … /* TEMPERATURE registers 1-4 */ static const u16 asb100_reg_temp[] = …; static const u16 asb100_reg_temp_max[] = …; static const u16 asb100_reg_temp_hyst[] = …; #define ASB100_REG_TEMP(nr) … #define ASB100_REG_TEMP_MAX(nr) … #define ASB100_REG_TEMP_HYST(nr) … #define ASB100_REG_TEMP2_CONFIG … #define ASB100_REG_TEMP3_CONFIG … #define ASB100_REG_CONFIG … #define ASB100_REG_ALARM1 … #define ASB100_REG_ALARM2 … #define ASB100_REG_SMIM1 … #define ASB100_REG_SMIM2 … #define ASB100_REG_VID_FANDIV … #define ASB100_REG_I2C_ADDR … #define ASB100_REG_CHIPID … #define ASB100_REG_I2C_SUBADDR … #define ASB100_REG_PIN … #define ASB100_REG_IRQ … #define ASB100_REG_BANK … #define ASB100_REG_CHIPMAN … #define ASB100_REG_WCHIPID … /* bit 7 -> enable, bits 0-3 -> duty cycle */ #define ASB100_REG_PWM1 … /* * CONVERSIONS * Rounding and limit checking is only done on the TO_REG variants. */ /* These constants are a guess, consistent w/ w83781d */ #define ASB100_IN_MIN … #define ASB100_IN_MAX … /* * IN: 1/1000 V (0V to 4.08V) * REG: 16mV/bit */ static u8 IN_TO_REG(unsigned val) { … } static unsigned IN_FROM_REG(u8 reg) { … } static u8 FAN_TO_REG(long rpm, int div) { … } static int FAN_FROM_REG(u8 val, int div) { … } /* These constants are a guess, consistent w/ w83781d */ #define ASB100_TEMP_MIN … #define ASB100_TEMP_MAX … /* * TEMP: 0.001C/bit (-128C to +127C) * REG: 1C/bit, two's complement */ static u8 TEMP_TO_REG(long temp) { … } static int TEMP_FROM_REG(u8 reg) { … } /* * PWM: 0 - 255 per sensors documentation * REG: (6.25% duty cycle per bit) */ static u8 ASB100_PWM_TO_REG(int pwm) { … } static int ASB100_PWM_FROM_REG(u8 reg) { … } #define DIV_FROM_REG(val) … /* * FAN DIV: 1, 2, 4, or 8 (defaults to 2) * REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */ static u8 DIV_TO_REG(long val) { … } /* * For each registered client, we need to keep some data in memory. That * data is pointed to by client->data. The structure itself is * dynamically allocated, at the same time the client itself is allocated. */ struct asb100_data { … }; static int asb100_read_value(struct i2c_client *client, u16 reg); static void asb100_write_value(struct i2c_client *client, u16 reg, u16 val); static int asb100_probe(struct i2c_client *client); static int asb100_detect(struct i2c_client *client, struct i2c_board_info *info); static void asb100_remove(struct i2c_client *client); static struct asb100_data *asb100_update_device(struct device *dev); static void asb100_init_client(struct i2c_client *client); static const struct i2c_device_id asb100_id[] = …; MODULE_DEVICE_TABLE(i2c, asb100_id); static struct i2c_driver asb100_driver = …; /* 7 Voltages */ #define show_in_reg(reg) … show_in_reg(…) … show_in_reg(…) … show_in_reg(…) … #define set_in_reg(REG, reg) … set_in_reg(…) set_in_reg(…) #define sysfs_in(offset) … sysfs_in(…) …; sysfs_in(…) …; sysfs_in(…) …; sysfs_in(…) …; sysfs_in(…) …; sysfs_in(…) …; sysfs_in(…) …; /* 3 Fans */ 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_div(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* * Note: we save and restore the fan minimum here, because its value is * determined in part by the fan divisor. This follows the principle of * least surprise; the user doesn't expect the fan minimum to change just * because the divisor changed. */ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } #define sysfs_fan(offset) … sysfs_fan(…); sysfs_fan(…); sysfs_fan(…); /* 4 Temp. Sensors */ static int sprintf_temp_from_reg(u16 reg, char *buf, int nr) { … } #define show_temp_reg(reg) … show_temp_reg(temp); show_temp_reg(temp_max); show_temp_reg(temp_hyst); #define set_temp_reg(REG, reg) … set_temp_reg(MAX, temp_max); set_temp_reg(HYST, temp_hyst); #define sysfs_temp(num) … sysfs_temp(…); sysfs_temp(…); sysfs_temp(…); sysfs_temp(…); /* VID */ static ssize_t cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(cpu0_vid); /* VRM */ static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t vrm_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* Alarms */ static DEVICE_ATTR_RW(vrm); static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(alarms); static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, char *buf) { … } static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11); static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13); /* 1 PWM */ static ssize_t pwm1_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t pwm1_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t pwm1_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t pwm1_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static DEVICE_ATTR_RW(pwm1); static DEVICE_ATTR_RW(pwm1_enable); static struct attribute *asb100_attributes[] = …; static const struct attribute_group asb100_group = …; static int asb100_detect_subclients(struct i2c_client *client) { … } /* Return 0 if detection is successful, -ENODEV otherwise */ static int asb100_detect(struct i2c_client *client, struct i2c_board_info *info) { … } static int asb100_probe(struct i2c_client *client) { … } static void asb100_remove(struct i2c_client *client) { … } /* * The SMBus locks itself, usually, but nothing may access the chip between * bank switches. */ static int asb100_read_value(struct i2c_client *client, u16 reg) { … } static void asb100_write_value(struct i2c_client *client, u16 reg, u16 value) { … } static void asb100_init_client(struct i2c_client *client) { … } static struct asb100_data *asb100_update_device(struct device *dev) { … } module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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