// SPDX-License-Identifier: GPL-2.0-or-later /* * gl518sm.c - Part of lm_sensors, Linux kernel modules for hardware * monitoring * Copyright (C) 1998, 1999 Frodo Looijaard <[email protected]> and * Kyosti Malkki <[email protected]> * Copyright (C) 2004 Hong-Gunn Chew <[email protected]> and * Jean Delvare <[email protected]> * * Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare * and advice of Greg Kroah-Hartman. * * Notes about the port: * Release 0x00 of the GL518SM chipset doesn't support reading of in0, * in1 nor in2. The original driver had an ugly workaround to get them * anyway (changing limits and watching alarms trigger and wear off). * We did not keep that part of the original driver in the Linux 2.6 * version, since it was making the driver significantly more complex * with no real benefit. */ #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/err.h> #include <linux/mutex.h> #include <linux/sysfs.h> /* Addresses to scan */ static const unsigned short normal_i2c[] = …; enum chips { … }; /* Many GL518 constants specified below */ /* The GL518 registers */ #define GL518_REG_CHIP_ID … #define GL518_REG_REVISION … #define GL518_REG_VENDOR_ID … #define GL518_REG_CONF … #define GL518_REG_TEMP_IN … #define GL518_REG_TEMP_MAX … #define GL518_REG_TEMP_HYST … #define GL518_REG_FAN_COUNT … #define GL518_REG_FAN_LIMIT … #define GL518_REG_VIN1_LIMIT … #define GL518_REG_VIN2_LIMIT … #define GL518_REG_VIN3_LIMIT … #define GL518_REG_VDD_LIMIT … #define GL518_REG_VIN3 … #define GL518_REG_MISC … #define GL518_REG_ALARM … #define GL518_REG_MASK … #define GL518_REG_INT … #define GL518_REG_VIN2 … #define GL518_REG_VIN1 … #define GL518_REG_VDD … /* * Conversions. Rounding and limit checking is only done on the TO_REG * variants. Note that you should be a bit careful with which arguments * these macros are called: arguments may be evaluated more than once. * Fixing this is just not worth it. */ #define RAW_FROM_REG(val) … #define BOOL_FROM_REG(val) … #define BOOL_TO_REG(val) … #define TEMP_CLAMP(val) … #define TEMP_TO_REG(val) … #define TEMP_FROM_REG(val) … static inline u8 FAN_TO_REG(long rpm, int div) { … } #define FAN_FROM_REG(val, div) … #define IN_CLAMP(val) … #define IN_TO_REG(val) … #define IN_FROM_REG(val) … #define VDD_CLAMP(val) … #define VDD_TO_REG(val) … #define VDD_FROM_REG(val) … #define DIV_FROM_REG(val) … #define BEEP_MASK_TO_REG(val) … #define BEEP_MASK_FROM_REG(val) … /* Each client has this additional data */ struct gl518_data { … }; /* * Registers 0x07 to 0x0c are word-sized, others are byte-sized * GL518 uses a high-byte first convention, which is exactly opposite to * the SMBus standard. */ static int gl518_read_value(struct i2c_client *client, u8 reg) { … } static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) { … } static struct gl518_data *gl518_update_device(struct device *dev) { … } /* * Sysfs stuff */ #define show(type, suffix, value) … show(TEMP, temp_input1, temp_in); show(TEMP, temp_max1, temp_max); show(TEMP, temp_hyst1, temp_hyst); show(BOOL, fan_auto1, fan_auto1); show(VDD, in_input0, voltage_in[0]); show(IN, in_input1, voltage_in[1]); show(IN, in_input2, voltage_in[2]); show(IN, in_input3, voltage_in[3]); show(VDD, in_min0, voltage_min[0]); show(IN, in_min1, voltage_min[1]); show(IN, in_min2, voltage_min[2]); show(IN, in_min3, voltage_min[3]); show(VDD, in_max0, voltage_max[0]); show(IN, in_max1, voltage_max[1]); show(IN, in_max2, voltage_max[2]); show(IN, in_max3, voltage_max[3]); show(RAW, alarms, alarms); show(BOOL, beep_enable, beep_enable); show(BEEP_MASK, beep_mask, beep_mask); 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) { … } #define set(type, suffix, value, reg) … #define set_bits(type, suffix, value, reg, mask, shift) … #define set_low(type, suffix, value, reg) … #define set_high(type, suffix, value, reg) … set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); 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 DEVICE_ATTR(temp1_input, 0444, show_temp_input1, NULL); static DEVICE_ATTR(temp1_max, 0644, show_temp_max1, set_temp_max1); static DEVICE_ATTR(temp1_max_hyst, 0644, show_temp_hyst1, set_temp_hyst1); static DEVICE_ATTR(fan1_auto, 0644, show_fan_auto1, set_fan_auto1); 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(in0_input, 0444, show_in_input0, NULL); static DEVICE_ATTR(in1_input, 0444, show_in_input1, NULL); static DEVICE_ATTR(in2_input, 0444, show_in_input2, NULL); static DEVICE_ATTR(in3_input, 0444, show_in_input3, NULL); static DEVICE_ATTR(in0_min, 0644, show_in_min0, set_in_min0); static DEVICE_ATTR(in1_min, 0644, show_in_min1, set_in_min1); static DEVICE_ATTR(in2_min, 0644, show_in_min2, set_in_min2); static DEVICE_ATTR(in3_min, 0644, show_in_min3, set_in_min3); static DEVICE_ATTR(in0_max, 0644, show_in_max0, set_in_max0); static DEVICE_ATTR(in1_max, 0644, show_in_max1, set_in_max1); static DEVICE_ATTR(in2_max, 0644, show_in_max2, set_in_max2); static DEVICE_ATTR(in3_max, 0644, show_in_max3, set_in_max3); static DEVICE_ATTR(alarms, 0444, show_alarms, NULL); static DEVICE_ATTR(beep_enable, 0644, show_beep_enable, set_beep_enable); static DEVICE_ATTR(beep_mask, 0644, show_beep_mask, set_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 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 struct attribute *gl518_attributes[] = …; static const struct attribute_group gl518_group = …; static struct attribute *gl518_attributes_r80[] = …; static const struct attribute_group gl518_group_r80 = …; /* * Real code */ /* Return 0 if detection is successful, -ENODEV otherwise */ static int gl518_detect(struct i2c_client *client, struct i2c_board_info *info) { … } /* * Called when we have found a new GL518SM. * Note that we preserve D4:NoFan2 and D2:beep_enable. */ static void gl518_init_client(struct i2c_client *client) { … } static int gl518_probe(struct i2c_client *client) { … } static const struct i2c_device_id gl518_id[] = …; MODULE_DEVICE_TABLE(i2c, gl518_id); static struct i2c_driver gl518_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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