495 lines
11 KiB
C
495 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* hwmon driver for Aquacomputer devices (D5 Next, Farbwerk 360)
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*
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* Aquacomputer devices send HID reports (with ID 0x01) every second to report
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* sensor values.
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*
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* Copyright 2021 Aleksa Savic <savicaleksa83@gmail.com>
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*/
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#include <linux/debugfs.h>
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#include <linux/hid.h>
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#include <linux/hwmon.h>
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#include <linux/jiffies.h>
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#include <linux/module.h>
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#include <linux/seq_file.h>
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#include <asm/unaligned.h>
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#define USB_VENDOR_ID_AQUACOMPUTER 0x0c70
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#define USB_PRODUCT_ID_D5NEXT 0xf00e
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#define USB_PRODUCT_ID_FARBWERK360 0xf010
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enum kinds { d5next, farbwerk360 };
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static const char *const aqc_device_names[] = {
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[d5next] = "d5next",
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[farbwerk360] = "farbwerk360"
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};
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#define DRIVER_NAME "aquacomputer_d5next"
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#define STATUS_REPORT_ID 0x01
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#define STATUS_UPDATE_INTERVAL (2 * HZ) /* In seconds */
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#define SERIAL_FIRST_PART 3
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#define SERIAL_SECOND_PART 5
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#define FIRMWARE_VERSION 13
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/* Register offsets for the D5 Next pump */
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#define D5NEXT_POWER_CYCLES 24
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#define D5NEXT_COOLANT_TEMP 87
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#define D5NEXT_PUMP_SPEED 116
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#define D5NEXT_FAN_SPEED 103
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#define D5NEXT_PUMP_POWER 114
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#define D5NEXT_FAN_POWER 101
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#define D5NEXT_PUMP_VOLTAGE 110
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#define D5NEXT_FAN_VOLTAGE 97
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#define D5NEXT_5V_VOLTAGE 57
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#define D5NEXT_PUMP_CURRENT 112
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#define D5NEXT_FAN_CURRENT 99
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/* Register offsets for the Farbwerk 360 RGB controller */
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#define FARBWERK360_NUM_SENSORS 4
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#define FARBWERK360_SENSOR_START 0x32
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#define FARBWERK360_SENSOR_SIZE 0x02
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#define FARBWERK360_SENSOR_DISCONNECTED 0x7FFF
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/* Labels for D5 Next */
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#define L_D5NEXT_COOLANT_TEMP "Coolant temp"
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static const char *const label_d5next_speeds[] = {
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"Pump speed",
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"Fan speed"
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};
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static const char *const label_d5next_power[] = {
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"Pump power",
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"Fan power"
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};
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static const char *const label_d5next_voltages[] = {
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"Pump voltage",
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"Fan voltage",
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"+5V voltage"
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};
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static const char *const label_d5next_current[] = {
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"Pump current",
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"Fan current"
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};
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/* Labels for Farbwerk 360 temperature sensors */
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static const char *const label_temp_sensors[] = {
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"Sensor 1",
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"Sensor 2",
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"Sensor 3",
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"Sensor 4"
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};
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struct aqc_data {
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struct hid_device *hdev;
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struct device *hwmon_dev;
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struct dentry *debugfs;
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enum kinds kind;
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const char *name;
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/* General info, same across all devices */
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u32 serial_number[2];
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u16 firmware_version;
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/* D5 Next specific - how many times the device was powered on */
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u32 power_cycles;
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/* Sensor values */
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s32 temp_input[4];
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u16 speed_input[2];
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u32 power_input[2];
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u16 voltage_input[3];
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u16 current_input[2];
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unsigned long updated;
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};
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static umode_t aqc_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr,
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int channel)
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{
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const struct aqc_data *priv = data;
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switch (type) {
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case hwmon_temp:
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switch (priv->kind) {
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case d5next:
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if (channel == 0)
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return 0444;
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break;
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case farbwerk360:
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return 0444;
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default:
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break;
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}
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break;
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case hwmon_fan:
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case hwmon_power:
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case hwmon_in:
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case hwmon_curr:
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switch (priv->kind) {
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case d5next:
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return 0444;
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default:
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break;
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}
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break;
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default:
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break;
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}
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return 0;
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}
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static int aqc_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
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int channel, long *val)
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{
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struct aqc_data *priv = dev_get_drvdata(dev);
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if (time_after(jiffies, priv->updated + STATUS_UPDATE_INTERVAL))
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return -ENODATA;
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switch (type) {
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case hwmon_temp:
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if (priv->temp_input[channel] == -ENODATA)
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return -ENODATA;
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*val = priv->temp_input[channel];
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break;
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case hwmon_fan:
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*val = priv->speed_input[channel];
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break;
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case hwmon_power:
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*val = priv->power_input[channel];
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break;
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case hwmon_in:
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*val = priv->voltage_input[channel];
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break;
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case hwmon_curr:
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*val = priv->current_input[channel];
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break;
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static int aqc_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr,
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int channel, const char **str)
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{
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struct aqc_data *priv = dev_get_drvdata(dev);
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switch (type) {
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case hwmon_temp:
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switch (priv->kind) {
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case d5next:
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*str = L_D5NEXT_COOLANT_TEMP;
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break;
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case farbwerk360:
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*str = label_temp_sensors[channel];
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break;
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default:
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break;
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}
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break;
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case hwmon_fan:
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switch (priv->kind) {
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case d5next:
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*str = label_d5next_speeds[channel];
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break;
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default:
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break;
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}
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break;
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case hwmon_power:
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switch (priv->kind) {
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case d5next:
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*str = label_d5next_power[channel];
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break;
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default:
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break;
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}
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break;
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case hwmon_in:
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switch (priv->kind) {
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case d5next:
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*str = label_d5next_voltages[channel];
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break;
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default:
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break;
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}
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break;
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case hwmon_curr:
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switch (priv->kind) {
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case d5next:
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*str = label_d5next_current[channel];
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break;
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default:
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break;
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}
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break;
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static const struct hwmon_ops aqc_hwmon_ops = {
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.is_visible = aqc_is_visible,
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.read = aqc_read,
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.read_string = aqc_read_string,
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};
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static const struct hwmon_channel_info *aqc_info[] = {
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HWMON_CHANNEL_INFO(temp,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL),
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HWMON_CHANNEL_INFO(fan,
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HWMON_F_INPUT | HWMON_F_LABEL,
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HWMON_F_INPUT | HWMON_F_LABEL),
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HWMON_CHANNEL_INFO(power,
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HWMON_P_INPUT | HWMON_P_LABEL,
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HWMON_P_INPUT | HWMON_P_LABEL),
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HWMON_CHANNEL_INFO(in,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL),
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HWMON_CHANNEL_INFO(curr,
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HWMON_C_INPUT | HWMON_C_LABEL,
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HWMON_C_INPUT | HWMON_C_LABEL),
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NULL
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};
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static const struct hwmon_chip_info aqc_chip_info = {
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.ops = &aqc_hwmon_ops,
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.info = aqc_info,
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};
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static int aqc_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data,
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int size)
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{
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int i, sensor_value;
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struct aqc_data *priv;
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if (report->id != STATUS_REPORT_ID)
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return 0;
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priv = hid_get_drvdata(hdev);
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/* Info provided with every report */
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priv->serial_number[0] = get_unaligned_be16(data + SERIAL_FIRST_PART);
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priv->serial_number[1] = get_unaligned_be16(data + SERIAL_SECOND_PART);
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priv->firmware_version = get_unaligned_be16(data + FIRMWARE_VERSION);
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/* Sensor readings */
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switch (priv->kind) {
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case d5next:
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priv->power_cycles = get_unaligned_be32(data + D5NEXT_POWER_CYCLES);
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priv->temp_input[0] = get_unaligned_be16(data + D5NEXT_COOLANT_TEMP) * 10;
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priv->speed_input[0] = get_unaligned_be16(data + D5NEXT_PUMP_SPEED);
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priv->speed_input[1] = get_unaligned_be16(data + D5NEXT_FAN_SPEED);
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priv->power_input[0] = get_unaligned_be16(data + D5NEXT_PUMP_POWER) * 10000;
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priv->power_input[1] = get_unaligned_be16(data + D5NEXT_FAN_POWER) * 10000;
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priv->voltage_input[0] = get_unaligned_be16(data + D5NEXT_PUMP_VOLTAGE) * 10;
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priv->voltage_input[1] = get_unaligned_be16(data + D5NEXT_FAN_VOLTAGE) * 10;
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priv->voltage_input[2] = get_unaligned_be16(data + D5NEXT_5V_VOLTAGE) * 10;
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priv->current_input[0] = get_unaligned_be16(data + D5NEXT_PUMP_CURRENT);
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priv->current_input[1] = get_unaligned_be16(data + D5NEXT_FAN_CURRENT);
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break;
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case farbwerk360:
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/* Temperature sensor readings */
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for (i = 0; i < FARBWERK360_NUM_SENSORS; i++) {
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sensor_value = get_unaligned_be16(data + FARBWERK360_SENSOR_START +
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i * FARBWERK360_SENSOR_SIZE);
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if (sensor_value == FARBWERK360_SENSOR_DISCONNECTED)
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priv->temp_input[i] = -ENODATA;
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else
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priv->temp_input[i] = sensor_value * 10;
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}
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break;
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default:
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break;
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}
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priv->updated = jiffies;
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return 0;
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}
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#ifdef CONFIG_DEBUG_FS
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static int serial_number_show(struct seq_file *seqf, void *unused)
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{
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struct aqc_data *priv = seqf->private;
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seq_printf(seqf, "%05u-%05u\n", priv->serial_number[0], priv->serial_number[1]);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(serial_number);
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static int firmware_version_show(struct seq_file *seqf, void *unused)
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{
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struct aqc_data *priv = seqf->private;
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seq_printf(seqf, "%u\n", priv->firmware_version);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(firmware_version);
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static int power_cycles_show(struct seq_file *seqf, void *unused)
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{
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struct aqc_data *priv = seqf->private;
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seq_printf(seqf, "%u\n", priv->power_cycles);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(power_cycles);
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static void aqc_debugfs_init(struct aqc_data *priv)
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{
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char name[64];
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scnprintf(name, sizeof(name), "%s_%s-%s", "aquacomputer", priv->name,
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dev_name(&priv->hdev->dev));
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priv->debugfs = debugfs_create_dir(name, NULL);
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debugfs_create_file("serial_number", 0444, priv->debugfs, priv, &serial_number_fops);
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debugfs_create_file("firmware_version", 0444, priv->debugfs, priv, &firmware_version_fops);
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if (priv->kind == d5next)
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debugfs_create_file("power_cycles", 0444, priv->debugfs, priv, &power_cycles_fops);
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}
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#else
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static void aqc_debugfs_init(struct aqc_data *priv)
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{
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}
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#endif
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static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
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{
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struct aqc_data *priv;
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int ret;
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priv = devm_kzalloc(&hdev->dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->hdev = hdev;
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hid_set_drvdata(hdev, priv);
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priv->updated = jiffies - STATUS_UPDATE_INTERVAL;
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ret = hid_parse(hdev);
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if (ret)
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return ret;
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ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
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if (ret)
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return ret;
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ret = hid_hw_open(hdev);
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if (ret)
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goto fail_and_stop;
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switch (hdev->product) {
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case USB_PRODUCT_ID_D5NEXT:
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priv->kind = d5next;
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break;
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case USB_PRODUCT_ID_FARBWERK360:
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priv->kind = farbwerk360;
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break;
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default:
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break;
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}
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priv->name = aqc_device_names[priv->kind];
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priv->hwmon_dev = hwmon_device_register_with_info(&hdev->dev, priv->name, priv,
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&aqc_chip_info, NULL);
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if (IS_ERR(priv->hwmon_dev)) {
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ret = PTR_ERR(priv->hwmon_dev);
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goto fail_and_close;
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}
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aqc_debugfs_init(priv);
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return 0;
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fail_and_close:
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hid_hw_close(hdev);
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fail_and_stop:
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hid_hw_stop(hdev);
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return ret;
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}
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static void aqc_remove(struct hid_device *hdev)
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{
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struct aqc_data *priv = hid_get_drvdata(hdev);
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debugfs_remove_recursive(priv->debugfs);
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hwmon_device_unregister(priv->hwmon_dev);
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hid_hw_close(hdev);
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hid_hw_stop(hdev);
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}
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static const struct hid_device_id aqc_table[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_D5NEXT) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_FARBWERK360) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, aqc_table);
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static struct hid_driver aqc_driver = {
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.name = DRIVER_NAME,
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.id_table = aqc_table,
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.probe = aqc_probe,
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.remove = aqc_remove,
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.raw_event = aqc_raw_event,
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};
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static int __init aqc_init(void)
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{
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return hid_register_driver(&aqc_driver);
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}
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static void __exit aqc_exit(void)
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{
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hid_unregister_driver(&aqc_driver);
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}
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/* Request to initialize after the HID bus to ensure it's not being loaded before */
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late_initcall(aqc_init);
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module_exit(aqc_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Aleksa Savic <savicaleksa83@gmail.com>");
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MODULE_DESCRIPTION("Hwmon driver for Aquacomputer devices");
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