// SPDX-License-Identifier: GPL-2.0-or-later /* * smsc47m192.c - Support for hardware monitoring block of * SMSC LPC47M192 and compatible Super I/O chips * * Copyright (C) 2006 Hartmut Rick <[email protected]> * * Derived from lm78.c and other chip drivers. */ #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.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/sysfs.h> #include <linux/mutex.h> /* Addresses to scan */ static const unsigned short normal_i2c[] = …; /* SMSC47M192 registers */ #define SMSC47M192_REG_IN(nr) … #define SMSC47M192_REG_IN_MAX(nr) … #define SMSC47M192_REG_IN_MIN(nr) … static u8 SMSC47M192_REG_TEMP[3] = …; static u8 SMSC47M192_REG_TEMP_MAX[3] = …; static u8 SMSC47M192_REG_TEMP_MIN[3] = …; #define SMSC47M192_REG_TEMP_OFFSET(nr) … #define SMSC47M192_REG_ALARM1 … #define SMSC47M192_REG_ALARM2 … #define SMSC47M192_REG_VID … #define SMSC47M192_REG_VID4 … #define SMSC47M192_REG_CONFIG … #define SMSC47M192_REG_SFR … #define SMSC47M192_REG_COMPANY_ID … #define SMSC47M192_REG_VERSION … /* generalised scaling with integer rounding */ static inline int SCALE(long val, int mul, int div) { … } /* Conversions */ /* smsc47m192 internally scales voltage measurements */ static const u16 nom_mv[] = …; static inline unsigned int IN_FROM_REG(u8 reg, int n) { … } static inline u8 IN_TO_REG(unsigned long val, int n) { … } /* * TEMP: 0.001 degC units (-128C to +127C) * REG: 1C/bit, two's complement */ static inline s8 TEMP_TO_REG(long val) { … } static inline int TEMP_FROM_REG(s8 val) { … } struct smsc47m192_data { … }; static struct smsc47m192_data *smsc47m192_update_device(struct device *dev) { … } /* Voltages */ static ssize_t in_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t in_min_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t in_max_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t in_min_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t in_max_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0); static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1); static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2); static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3); static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4); static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); static SENSOR_DEVICE_ATTR_RO(in5_input, in, 5); static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 5); static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 5); static SENSOR_DEVICE_ATTR_RO(in6_input, in, 6); static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 6); static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 6); static SENSOR_DEVICE_ATTR_RO(in7_input, in, 7); static SENSOR_DEVICE_ATTR_RW(in7_min, in_min, 7); static SENSOR_DEVICE_ATTR_RW(in7_max, in_max, 7); /* Temperatures */ static ssize_t temp_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t temp_min_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t temp_max_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t temp_min_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t temp_max_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t temp_offset_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t temp_offset_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0); static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_min, 0); static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0); static SENSOR_DEVICE_ATTR_RW(temp1_offset, temp_offset, 0); static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1); static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_min, 1); static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1); static SENSOR_DEVICE_ATTR_RW(temp2_offset, temp_offset, 1); static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2); static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2); static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2); static SENSOR_DEVICE_ATTR_RW(temp3_offset, temp_offset, 2); /* VID */ static ssize_t cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(cpu0_vid); 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) { … } static DEVICE_ATTR_RW(vrm); /* Alarms */ static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 0x0010); static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 0x0020); static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 0x0040); static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 0x4000); static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 0x8000); static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0x0001); static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 0x0002); static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 0x0004); static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 0x0008); static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 0x0100); static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 0x0200); static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 0x0400); static SENSOR_DEVICE_ATTR_RO(in7_alarm, alarm, 0x0800); static struct attribute *smsc47m192_attributes[] = …; static const struct attribute_group smsc47m192_group = …; static struct attribute *smsc47m192_attributes_in4[] = …; static const struct attribute_group smsc47m192_group_in4 = …; static void smsc47m192_init_client(struct i2c_client *client) { … } /* Return 0 if detection is successful, -ENODEV otherwise */ static int smsc47m192_detect(struct i2c_client *client, struct i2c_board_info *info) { … } static int smsc47m192_probe(struct i2c_client *client) { … } static const struct i2c_device_id smsc47m192_id[] = …; MODULE_DEVICE_TABLE(i2c, smsc47m192_id); static struct i2c_driver smsc47m192_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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