// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for TI ADC128D818 System Monitor with Temperature Sensor * * Copyright (c) 2014 Guenter Roeck * * Derived from lm80.c * Copyright (C) 1998, 1999 Frodo Looijaard <[email protected]> * and Philip Edelbrock <[email protected]> */ #include <linux/module.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/regulator/consumer.h> #include <linux/mutex.h> #include <linux/bitops.h> #include <linux/of.h> /* Addresses to scan * The chip also supports addresses 0x35..0x37. Don't scan those addresses * since they are also used by some EEPROMs, which may result in false * positives. */ static const unsigned short normal_i2c[] = …; /* registers */ #define ADC128_REG_IN_MAX(nr) … #define ADC128_REG_IN_MIN(nr) … #define ADC128_REG_IN(nr) … #define ADC128_REG_TEMP … #define ADC128_REG_TEMP_MAX … #define ADC128_REG_TEMP_HYST … #define ADC128_REG_CONFIG … #define ADC128_REG_ALARM … #define ADC128_REG_MASK … #define ADC128_REG_CONV_RATE … #define ADC128_REG_ONESHOT … #define ADC128_REG_SHUTDOWN … #define ADC128_REG_CONFIG_ADV … #define ADC128_REG_BUSY_STATUS … #define ADC128_REG_MAN_ID … #define ADC128_REG_DEV_ID … /* No. of voltage entries in adc128_attrs */ #define ADC128_ATTR_NUM_VOLT … /* Voltage inputs visible per operation mode */ static const u8 num_inputs[] = …; struct adc128_data { … }; static struct adc128_data *adc128_update_device(struct device *dev) { … } static ssize_t adc128_in_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t adc128_in_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t adc128_temp_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t adc128_temp_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t adc128_alarm_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static umode_t adc128_is_visible(struct kobject *kobj, struct attribute *attr, int index) { … } static SENSOR_DEVICE_ATTR_2_RO(in0_input, adc128_in, 0, 0); static SENSOR_DEVICE_ATTR_2_RW(in0_min, adc128_in, 0, 1); static SENSOR_DEVICE_ATTR_2_RW(in0_max, adc128_in, 0, 2); static SENSOR_DEVICE_ATTR_2_RO(in1_input, adc128_in, 1, 0); static SENSOR_DEVICE_ATTR_2_RW(in1_min, adc128_in, 1, 1); static SENSOR_DEVICE_ATTR_2_RW(in1_max, adc128_in, 1, 2); static SENSOR_DEVICE_ATTR_2_RO(in2_input, adc128_in, 2, 0); static SENSOR_DEVICE_ATTR_2_RW(in2_min, adc128_in, 2, 1); static SENSOR_DEVICE_ATTR_2_RW(in2_max, adc128_in, 2, 2); static SENSOR_DEVICE_ATTR_2_RO(in3_input, adc128_in, 3, 0); static SENSOR_DEVICE_ATTR_2_RW(in3_min, adc128_in, 3, 1); static SENSOR_DEVICE_ATTR_2_RW(in3_max, adc128_in, 3, 2); static SENSOR_DEVICE_ATTR_2_RO(in4_input, adc128_in, 4, 0); static SENSOR_DEVICE_ATTR_2_RW(in4_min, adc128_in, 4, 1); static SENSOR_DEVICE_ATTR_2_RW(in4_max, adc128_in, 4, 2); static SENSOR_DEVICE_ATTR_2_RO(in5_input, adc128_in, 5, 0); static SENSOR_DEVICE_ATTR_2_RW(in5_min, adc128_in, 5, 1); static SENSOR_DEVICE_ATTR_2_RW(in5_max, adc128_in, 5, 2); static SENSOR_DEVICE_ATTR_2_RO(in6_input, adc128_in, 6, 0); static SENSOR_DEVICE_ATTR_2_RW(in6_min, adc128_in, 6, 1); static SENSOR_DEVICE_ATTR_2_RW(in6_max, adc128_in, 6, 2); static SENSOR_DEVICE_ATTR_2_RO(in7_input, adc128_in, 7, 0); static SENSOR_DEVICE_ATTR_2_RW(in7_min, adc128_in, 7, 1); static SENSOR_DEVICE_ATTR_2_RW(in7_max, adc128_in, 7, 2); static SENSOR_DEVICE_ATTR_RO(temp1_input, adc128_temp, 0); static SENSOR_DEVICE_ATTR_RW(temp1_max, adc128_temp, 1); static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, adc128_temp, 2); static SENSOR_DEVICE_ATTR_RO(in0_alarm, adc128_alarm, 0); static SENSOR_DEVICE_ATTR_RO(in1_alarm, adc128_alarm, 1); static SENSOR_DEVICE_ATTR_RO(in2_alarm, adc128_alarm, 2); static SENSOR_DEVICE_ATTR_RO(in3_alarm, adc128_alarm, 3); static SENSOR_DEVICE_ATTR_RO(in4_alarm, adc128_alarm, 4); static SENSOR_DEVICE_ATTR_RO(in5_alarm, adc128_alarm, 5); static SENSOR_DEVICE_ATTR_RO(in6_alarm, adc128_alarm, 6); static SENSOR_DEVICE_ATTR_RO(in7_alarm, adc128_alarm, 7); static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, adc128_alarm, 7); static struct attribute *adc128_attrs[] = …; static const struct attribute_group adc128_group = …; __ATTRIBUTE_GROUPS(…); static int adc128_detect(struct i2c_client *client, struct i2c_board_info *info) { … } static int adc128_init_client(struct adc128_data *data, bool external_vref) { … } static int adc128_probe(struct i2c_client *client) { … } static const struct i2c_device_id adc128_id[] = …; MODULE_DEVICE_TABLE(i2c, adc128_id); static const struct of_device_id __maybe_unused adc128_of_match[] = …; MODULE_DEVICE_TABLE(of, adc128_of_match); static struct i2c_driver adc128_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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