// SPDX-License-Identifier: GPL-2.0-or-later /* * adm1025.c * * Copyright (C) 2000 Chen-Yuan Wu <[email protected]> * Copyright (C) 2003-2009 Jean Delvare <[email protected]> * * The ADM1025 is a sensor chip made by Analog Devices. It reports up to 6 * voltages (including its own power source) and up to two temperatures * (its own plus up to one external one). Voltages are scaled internally * (which is not the common way) with ratios such that the nominal value * of each voltage correspond to a register value of 192 (which means a * resolution of about 0.5% of the nominal value). Temperature values are * reported with a 1 deg resolution and a 3 deg accuracy. Complete * datasheet can be obtained from Analog's website at: * https://www.onsemi.com/PowerSolutions/product.do?id=ADM1025 * * This driver also supports the ADM1025A, which differs from the ADM1025 * only in that it has "open-drain VID inputs while the ADM1025 has * on-chip 100k pull-ups on the VID inputs". It doesn't make any * difference for us. * * This driver also supports the NE1619, a sensor chip made by Philips. * That chip is similar to the ADM1025A, with a few differences. The only * difference that matters to us is that the NE1619 has only two possible * addresses while the ADM1025A has a third one. Complete datasheet can be * obtained from Philips's website at: * http://www.semiconductors.philips.com/pip/NE1619DS.html * * Since the ADM1025 was the first chipset supported by this driver, most * comments will refer to this chipset, but are actually general and * concern all supported chipsets, unless mentioned otherwise. */ #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> /* * Addresses to scan * ADM1025 and ADM1025A have three possible addresses: 0x2c, 0x2d and 0x2e. * NE1619 has two possible addresses: 0x2c and 0x2d. */ static const unsigned short normal_i2c[] = …; enum chips { … }; /* * The ADM1025 registers */ #define ADM1025_REG_MAN_ID … #define ADM1025_REG_CHIP_ID … #define ADM1025_REG_CONFIG … #define ADM1025_REG_STATUS1 … #define ADM1025_REG_STATUS2 … #define ADM1025_REG_IN(nr) … #define ADM1025_REG_IN_MAX(nr) … #define ADM1025_REG_IN_MIN(nr) … #define ADM1025_REG_TEMP(nr) … #define ADM1025_REG_TEMP_HIGH(nr) … #define ADM1025_REG_TEMP_LOW(nr) … #define ADM1025_REG_VID … #define ADM1025_REG_VID4 … /* * Conversions and various macros * The ADM1025 uses signed 8-bit values for temperatures. */ static const int in_scale[6] = …; #define IN_FROM_REG(reg, scale) … #define IN_TO_REG(val, scale) … #define TEMP_FROM_REG(reg) … #define TEMP_TO_REG(val) … /* * Client data (each client gets its own) */ struct adm1025_data { … }; static struct adm1025_data *adm1025_update_device(struct device *dev) { … } /* * Sysfs stuff */ 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 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 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 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 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_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 ssize_t alarms_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(alarms); 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(in4_alarm, alarm, 8); static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 9); static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 5); static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 4); static SENSOR_DEVICE_ATTR_RO(temp1_fault, alarm, 14); 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); /* * Real code */ static struct attribute *adm1025_attributes[] = …; static const struct attribute_group adm1025_group = …; static struct attribute *adm1025_attributes_in4[] = …; static const struct attribute_group adm1025_group_in4 = …; /* Return 0 if detection is successful, -ENODEV otherwise */ static int adm1025_detect(struct i2c_client *client, struct i2c_board_info *info) { … } static void adm1025_init_client(struct i2c_client *client) { … } static int adm1025_probe(struct i2c_client *client) { … } static const struct i2c_device_id adm1025_id[] = …; MODULE_DEVICE_TABLE(i2c, adm1025_id); static struct i2c_driver adm1025_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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