// SPDX-License-Identifier: GPL-2.0-or-later /* * gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware * monitoring * Copyright (c) 1998, 1999 Frodo Looijaard <[email protected]>, * Kyösti Mälkki <[email protected]> * Copyright (c) 2005 Maarten Deprez <[email protected]> */ #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/mutex.h> #include <linux/sysfs.h> /* Type of the extra sensor */ static unsigned short extra_sensor_type; module_param(extra_sensor_type, ushort, 0); MODULE_PARM_DESC(…) …; /* Addresses to scan */ static const unsigned short normal_i2c[] = …; /* * Many GL520 constants specified below * One of the inputs can be configured as either temp or voltage. * That's why _TEMP2 and _IN4 access the same register */ /* The GL520 registers */ #define GL520_REG_CHIP_ID … #define GL520_REG_REVISION … #define GL520_REG_CONF … #define GL520_REG_MASK … #define GL520_REG_VID_INPUT … static const u8 GL520_REG_IN_INPUT[] = …; static const u8 GL520_REG_IN_LIMIT[] = …; static const u8 GL520_REG_IN_MIN[] = …; static const u8 GL520_REG_IN_MAX[] = …; static const u8 GL520_REG_TEMP_INPUT[] = …; static const u8 GL520_REG_TEMP_MAX[] = …; static const u8 GL520_REG_TEMP_MAX_HYST[] = …; #define GL520_REG_FAN_INPUT … #define GL520_REG_FAN_MIN … #define GL520_REG_FAN_DIV … #define GL520_REG_FAN_OFF … #define GL520_REG_ALARMS … #define GL520_REG_BEEP_MASK … #define GL520_REG_BEEP_ENABLE … /* Client data */ struct gl520_data { … }; /* * Registers 0x07 to 0x0c are word-sized, others are byte-sized * GL520 uses a high-byte first convention */ static int gl520_read_value(struct i2c_client *client, u8 reg) { … } static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) { … } static struct gl520_data *gl520_update_device(struct device *dev) { … } /* * Sysfs stuff */ static ssize_t cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(cpu0_vid); #define VDD_FROM_REG(val) … #define VDD_CLAMP(val) … #define VDD_TO_REG(val) … #define IN_FROM_REG(val) … #define IN_CLAMP(val) … #define IN_TO_REG(val) … static ssize_t in_input_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_input, 0); static SENSOR_DEVICE_ATTR_RO(in1_input, in_input, 1); static SENSOR_DEVICE_ATTR_RO(in2_input, in_input, 2); static SENSOR_DEVICE_ATTR_RO(in3_input, in_input, 3); static SENSOR_DEVICE_ATTR_RO(in4_input, in_input, 4); static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); #define DIV_FROM_REG(val) … #define FAN_FROM_REG(val, div) … #define FAN_BASE(div) … #define FAN_CLAMP(val, div) … #define FAN_TO_REG(val, div) … static ssize_t fan_input_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_div_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t fan1_off_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 fan_div_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t fan1_off_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0); static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); static DEVICE_ATTR_RW(fan1_off); #define TEMP_FROM_REG(val) … #define TEMP_CLAMP(val) … #define TEMP_TO_REG(val) … static ssize_t temp_input_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_max_hyst_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t temp_max_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t temp_max_hyst_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0); static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1); static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0); static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1); static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, temp_max_hyst, 0); static SENSOR_DEVICE_ATTR_RW(temp2_max_hyst, temp_max_hyst, 1); static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t beep_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t beep_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t beep_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t beep_mask_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static DEVICE_ATTR_RO(alarms); static DEVICE_ATTR_RW(beep_enable); static DEVICE_ATTR_RW(beep_mask); static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4); static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 5); static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 6); static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 7); static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 7); 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(in0_beep, beep, 0); static SENSOR_DEVICE_ATTR_RW(in1_beep, beep, 1); static SENSOR_DEVICE_ATTR_RW(in2_beep, beep, 2); static SENSOR_DEVICE_ATTR_RW(in3_beep, beep, 3); static SENSOR_DEVICE_ATTR_RW(temp1_beep, beep, 4); static SENSOR_DEVICE_ATTR_RW(fan1_beep, beep, 5); static SENSOR_DEVICE_ATTR_RW(fan2_beep, beep, 6); static SENSOR_DEVICE_ATTR_RW(temp2_beep, beep, 7); static SENSOR_DEVICE_ATTR_RW(in4_beep, beep, 7); static struct attribute *gl520_attributes[] = …; static const struct attribute_group gl520_group = …; static struct attribute *gl520_attributes_in4[] = …; static struct attribute *gl520_attributes_temp2[] = …; static const struct attribute_group gl520_group_in4 = …; static const struct attribute_group gl520_group_temp2 = …; /* * Real code */ /* Return 0 if detection is successful, -ENODEV otherwise */ static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info) { … } /* Called when we have found a new GL520SM. */ static void gl520_init_client(struct i2c_client *client) { … } static int gl520_probe(struct i2c_client *client) { … } static const struct i2c_device_id gl520_id[] = …; MODULE_DEVICE_TABLE(i2c, gl520_id); static struct i2c_driver gl520_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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