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hwmon: (aquacomputer_d5next) Add support for Aquacomputer Octo 

Extend aquacomputer_d5next driver to expose hardware temperature sensors
and fans of the Aquacomputer Octo fan controller, which communicates
through a proprietary USB HID protocol.

Four temperature sensors and eight PWM controllable fans are available.
Additionally, serial number, firmware version and power-on count are
exposed through debugfs.

This driver has been tested on x86_64.

Signed-off-by: Aleksa Savic <savicaleksa83@gmail.com>
Link: https://lore.kernel.org/r/20220404134212.9690-1-savicaleksa83@gmail.com
[groeck: Add missing "select CRC16"]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Aleksa Savic 2022-04-04 15:42:11 +02:00 committed by Guenter Roeck
parent c0c45238fc
commit 752b927951
3 changed files with 393 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/hwmon/aquacomputer_d5next.rst
View File

@ -7,6 +7,7 @@ Supported devices:
* Aquacomputer D5 Next watercooling pump
* Aquacomputer Farbwerk 360 RGB controller
* Aquacomputer Octo fan controller
Author: Aleksa Savic
@ -28,6 +29,9 @@ seems to require sending it a complete configuration. That includes addressable
RGB LEDs, for which there is no standard sysfs interface. Thus, that task is
better suited for userspace tools.
The Octo exposes four temperature sensors and eight PWM controllable fans, along
with their speed (in RPM), power, voltage and current.
The Farbwerk 360 exposes four temperature sensors. Depending on the device,
not all sysfs and debugfs entries will be available.

8
drivers/hwmon/Kconfig
View File

@ -256,11 +256,13 @@ config SENSORS_AHT10
will be called aht10.
config SENSORS_AQUACOMPUTER_D5NEXT
tristate "Aquacomputer D5 Next watercooling pump"
tristate "Aquacomputer D5 Next, Octo and Farbwerk 360"
depends on USB_HID
select CRC16
help
If you say yes here you get support for the Aquacomputer D5 Next
watercooling pump sensors.
If you say yes here you get support for sensors and fans of
the Aquacomputer D5 Next watercooling pump, Octo fan
controller and Farbwerk 360 RGB controller, where available.
This driver can also be built as a module. If so, the module
will be called aquacomputer_d5next.

433
drivers/hwmon/aquacomputer_d5next.c
View File

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* hwmon driver for Aquacomputer devices (D5 Next, Farbwerk 360)
* hwmon driver for Aquacomputer devices (D5 Next, Farbwerk 360, Octo)
*
* Aquacomputer devices send HID reports (with ID 0x01) every second to report
* sensor values.
@ -8,23 +8,27 @@
* Copyright 2021 Aleksa Savic <savicaleksa83@gmail.com>
*/
#include <linux/crc16.h>
#include <linux/debugfs.h>
#include <linux/hid.h>
#include <linux/hwmon.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/seq_file.h>
#include <asm/unaligned.h>
#define USB_VENDOR_ID_AQUACOMPUTER 0x0c70
#define USB_PRODUCT_ID_D5NEXT 0xf00e
#define USB_PRODUCT_ID_FARBWERK360 0xf010
#define USB_PRODUCT_ID_OCTO 0xf011
enum kinds { d5next, farbwerk360 };
enum kinds { d5next, farbwerk360, octo };
static const char *const aqc_device_names[] = {
[d5next] = "d5next",
[farbwerk360] = "farbwerk360"
[farbwerk360] = "farbwerk360",
[octo] = "octo"
};
#define DRIVER_NAME "aquacomputer_d5next"
@ -35,6 +39,18 @@ static const char *const aqc_device_names[] = {
#define SERIAL_SECOND_PART 5
#define FIRMWARE_VERSION 13
#define CTRL_REPORT_ID 0x03
/* The HID report that the official software always sends
* after writing values, currently same for all devices
*/
#define SECONDARY_CTRL_REPORT_ID 0x02
#define SECONDARY_CTRL_REPORT_SIZE 0x0B
static u8 secondary_ctrl_report[] = {
0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x34, 0xC6
};
/* Register offsets for the D5 Next pump */
#define D5NEXT_POWER_CYCLES 24
@ -55,12 +71,38 @@ static const char *const aqc_device_names[] = {
/* Register offsets for the Farbwerk 360 RGB controller */
#define FARBWERK360_NUM_SENSORS 4
#define FARBWERK360_SENSOR_START 0x32
#define FARBWERK360_SENSOR_START 0x32
#define FARBWERK360_SENSOR_SIZE 0x02
#define FARBWERK360_SENSOR_DISCONNECTED 0x7FFF
/* Register offsets for the Octo fan controller */
#define OCTO_POWER_CYCLES 0x18
#define OCTO_NUM_FANS 8
#define OCTO_FAN_PERCENT_OFFSET 0x00
#define OCTO_FAN_VOLTAGE_OFFSET 0x02
#define OCTO_FAN_CURRENT_OFFSET 0x04
#define OCTO_FAN_POWER_OFFSET 0x06
#define OCTO_FAN_SPEED_OFFSET 0x08
static u8 octo_sensor_fan_offsets[] = { 0x7D, 0x8A, 0x97, 0xA4, 0xB1, 0xBE, 0xCB, 0xD8 };
#define OCTO_NUM_SENSORS 4
#define OCTO_SENSOR_START 0x3D
#define OCTO_SENSOR_SIZE 0x02
#define OCTO_SENSOR_DISCONNECTED 0x7FFF
#define OCTO_CTRL_REPORT_SIZE 0x65F
#define OCTO_CTRL_REPORT_CHECKSUM_OFFSET 0x65D
#define OCTO_CTRL_REPORT_CHECKSUM_START 0x01
#define OCTO_CTRL_REPORT_CHECKSUM_LENGTH 0x65C
/* Fan speed registers in Octo control report (from 0-100%) */
static u16 octo_ctrl_fan_offsets[] = { 0x5B, 0xB0, 0x105, 0x15A, 0x1AF, 0x204, 0x259, 0x2AE };
/* Labels for D5 Next */
#define L_D5NEXT_COOLANT_TEMP "Coolant temp"
static const char *const label_d5next_temp[] = {
"Coolant temp"
};
static const char *const label_d5next_speeds[] = {
"Pump speed",
@ -83,7 +125,7 @@ static const char *const label_d5next_current[] = {
"Fan current"
};
/* Labels for Farbwerk 360 temperature sensors */
/* Labels for Farbwerk 360 and Octo temperature sensors */
static const char *const label_temp_sensors[] = {
"Sensor 1",
"Sensor 2",
@ -91,32 +133,182 @@ static const char *const label_temp_sensors[] = {
"Sensor 4"
};
/* Labels for Octo */
static const char *const label_fan_speed[] = {
"Fan 1 speed",
"Fan 2 speed",
"Fan 3 speed",
"Fan 4 speed",
"Fan 5 speed",
"Fan 6 speed",
"Fan 7 speed",
"Fan 8 speed"
};
static const char *const label_fan_power[] = {
"Fan 1 power",
"Fan 2 power",
"Fan 3 power",
"Fan 4 power",
"Fan 5 power",
"Fan 6 power",
"Fan 7 power",
"Fan 8 power"
};
static const char *const label_fan_voltage[] = {
"Fan 1 voltage",
"Fan 2 voltage",
"Fan 3 voltage",
"Fan 4 voltage",
"Fan 5 voltage",
"Fan 6 voltage",
"Fan 7 voltage",
"Fan 8 voltage"
};
static const char *const label_fan_current[] = {
"Fan 1 current",
"Fan 2 current",
"Fan 3 current",
"Fan 4 current",
"Fan 5 current",
"Fan 6 current",
"Fan 7 current",
"Fan 8 current"
};
struct aqc_data {
struct hid_device *hdev;
struct device *hwmon_dev;
struct dentry *debugfs;
struct mutex mutex; /* Used for locking access when reading and writing PWM values */
enum kinds kind;
const char *name;
int buffer_size;
u8 *buffer;
int checksum_start;
int checksum_length;
int checksum_offset;
/* General info, same across all devices */
u32 serial_number[2];
u16 firmware_version;
/* D5 Next specific - how many times the device was powered on */
/* How many times the device was powered on */
u32 power_cycles;
/* Sensor values */
s32 temp_input[4];
u16 speed_input[2];
u32 power_input[2];
u16 voltage_input[3];
u16 current_input[2];
u16 speed_input[8];
u32 power_input[8];
u16 voltage_input[8];
u16 current_input[8];
/* Label values */
const char *const *temp_label;
const char *const *speed_label;
const char *const *power_label;
const char *const *voltage_label;
const char *const *current_label;
unsigned long updated;
};
static umode_t aqc_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr,
int channel)
/* Converts from centi-percent */
static int aqc_percent_to_pwm(u16 val)
{
return DIV_ROUND_CLOSEST(val * 255, 100 * 100);
}
/* Converts to centi-percent */
static int aqc_pwm_to_percent(long val)
{
if (val < 0 || val > 255)
return -EINVAL;
return DIV_ROUND_CLOSEST(val * 100 * 100, 255);
}
/* Expects the mutex to be locked */
static int aqc_get_ctrl_data(struct aqc_data *priv)
{
int ret;
memset(priv->buffer, 0x00, priv->buffer_size);
ret = hid_hw_raw_request(priv->hdev, CTRL_REPORT_ID, priv->buffer, priv->buffer_size,
HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
if (ret < 0)
ret = -ENODATA;
return ret;
}
/* Expects the mutex to be locked */
static int aqc_send_ctrl_data(struct aqc_data *priv)
{
int ret;
u16 checksum;
/* Init and xorout value for CRC-16/USB is 0xffff */
checksum = crc16(0xffff, priv->buffer + priv->checksum_start, priv->checksum_length);
checksum ^= 0xffff;
/* Place the new checksum at the end of the report */
put_unaligned_be16(checksum, priv->buffer + priv->checksum_offset);
/* Send the patched up report back to the device */
ret = hid_hw_raw_request(priv->hdev, CTRL_REPORT_ID, priv->buffer, priv->buffer_size,
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
if (ret < 0)
return ret;
/* The official software sends this report after every change, so do it here as well */
ret = hid_hw_raw_request(priv->hdev, SECONDARY_CTRL_REPORT_ID, secondary_ctrl_report,
SECONDARY_CTRL_REPORT_SIZE, HID_FEATURE_REPORT,
HID_REQ_SET_REPORT);
return ret;
}
/* Refreshes the control buffer and returns value at offset */
static int aqc_get_ctrl_val(struct aqc_data *priv, int offset)
{
int ret;
mutex_lock(&priv->mutex);
ret = aqc_get_ctrl_data(priv);
if (ret < 0)
goto unlock_and_return;
ret = get_unaligned_be16(priv->buffer + offset);
unlock_and_return:
mutex_unlock(&priv->mutex);
return ret;
}
static int aqc_set_ctrl_val(struct aqc_data *priv, int offset, long val)
{
int ret;
mutex_lock(&priv->mutex);
ret = aqc_get_ctrl_data(priv);
if (ret < 0)
goto unlock_and_return;
put_unaligned_be16((u16)val, priv->buffer + offset);
ret = aqc_send_ctrl_data(priv);
unlock_and_return:
mutex_unlock(&priv->mutex);
return ret;
}
static umode_t aqc_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel)
{
const struct aqc_data *priv = data;
@ -128,17 +320,47 @@ static umode_t aqc_is_visible(const void *data, enum hwmon_sensor_types type, u3
return 0444;
break;
case farbwerk360:
case octo:
return 0444;
default:
break;
}
break;
case hwmon_pwm:
switch (priv->kind) {
case octo:
switch (attr) {
case hwmon_pwm_input:
return 0644;
default:
break;
}
break;
default:
break;
}
break;
case hwmon_fan:
case hwmon_power:
case hwmon_in:
case hwmon_curr:
switch (priv->kind) {
case d5next:
if (channel < 2)
return 0444;
break;
case octo:
return 0444;
default:
break;
}
break;
case hwmon_in:
switch (priv->kind) {
case d5next:
if (channel < 3)
return 0444;
break;
case octo:
return 0444;
default:
break;
@ -154,6 +376,7 @@ static umode_t aqc_is_visible(const void *data, enum hwmon_sensor_types type, u3
static int aqc_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
int channel, long *val)
{
int ret;
struct aqc_data *priv = dev_get_drvdata(dev);
if (time_after(jiffies, priv->updated + STATUS_UPDATE_INTERVAL))
@ -172,6 +395,19 @@ static int aqc_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
case hwmon_power:
*val = priv->power_input[channel];
break;
case hwmon_pwm:
switch (priv->kind) {
case octo:
ret = aqc_get_ctrl_val(priv, octo_ctrl_fan_offsets[channel]);
if (ret < 0)
return ret;
*val = aqc_percent_to_pwm(ret);
break;
default:
break;
}
break;
case hwmon_in:
*val = priv->voltage_input[channel];
break;
@ -192,48 +428,51 @@ static int aqc_read_string(struct device *dev, enum hwmon_sensor_types type, u32
switch (type) {
case hwmon_temp:
switch (priv->kind) {
case d5next:
*str = L_D5NEXT_COOLANT_TEMP;
break;
case farbwerk360:
*str = label_temp_sensors[channel];
break;
default:
break;
}
*str = priv->temp_label[channel];
break;
case hwmon_fan:
switch (priv->kind) {
case d5next:
*str = label_d5next_speeds[channel];
break;
default:
break;
}
*str = priv->speed_label[channel];
break;
case hwmon_power:
switch (priv->kind) {
case d5next:
*str = label_d5next_power[channel];
break;
default:
break;
}
*str = priv->power_label[channel];
break;
case hwmon_in:
switch (priv->kind) {
case d5next:
*str = label_d5next_voltages[channel];
break;
default:
break;
}
*str = priv->voltage_label[channel];
break;
case hwmon_curr:
switch (priv->kind) {
case d5next:
*str = label_d5next_current[channel];
*str = priv->current_label[channel];
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int aqc_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel,
long val)
{
int ret, pwm_value;
struct aqc_data *priv = dev_get_drvdata(dev);
switch (type) {
case hwmon_pwm:
switch (attr) {
case hwmon_pwm_input:
switch (priv->kind) {
case octo:
pwm_value = aqc_pwm_to_percent(val);
if (pwm_value < 0)
return pwm_value;
ret = aqc_set_ctrl_val(priv, octo_ctrl_fan_offsets[channel],
pwm_value);
if (ret < 0)
return ret;
break;
default:
break;
}
break;
default:
break;
@ -250,6 +489,7 @@ static const struct hwmon_ops aqc_hwmon_ops = {
.is_visible = aqc_is_visible,
.read = aqc_read,
.read_string = aqc_read_string,
.write = aqc_write
};
static const struct hwmon_channel_info *aqc_info[] = {
@ -259,16 +499,48 @@ static const struct hwmon_channel_info *aqc_info[] = {
HWMON_T_INPUT | HWMON_T_LABEL,
HWMON_T_INPUT | HWMON_T_LABEL),
HWMON_CHANNEL_INFO(fan,
HWMON_F_INPUT | HWMON_F_LABEL,
HWMON_F_INPUT | HWMON_F_LABEL,
HWMON_F_INPUT | HWMON_F_LABEL,
HWMON_F_INPUT | HWMON_F_LABEL,
HWMON_F_INPUT | HWMON_F_LABEL,
HWMON_F_INPUT | HWMON_F_LABEL,
HWMON_F_INPUT | HWMON_F_LABEL,
HWMON_F_INPUT | HWMON_F_LABEL),
HWMON_CHANNEL_INFO(power,
HWMON_P_INPUT | HWMON_P_LABEL,
HWMON_P_INPUT | HWMON_P_LABEL,
HWMON_P_INPUT | HWMON_P_LABEL,
HWMON_P_INPUT | HWMON_P_LABEL,
HWMON_P_INPUT | HWMON_P_LABEL,
HWMON_P_INPUT | HWMON_P_LABEL,
HWMON_P_INPUT | HWMON_P_LABEL,
HWMON_P_INPUT | HWMON_P_LABEL),
HWMON_CHANNEL_INFO(pwm,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT),
HWMON_CHANNEL_INFO(in,
HWMON_I_INPUT | HWMON_I_LABEL,
HWMON_I_INPUT | HWMON_I_LABEL,
HWMON_I_INPUT | HWMON_I_LABEL,
HWMON_I_INPUT | HWMON_I_LABEL,
HWMON_I_INPUT | HWMON_I_LABEL,
HWMON_I_INPUT | HWMON_I_LABEL,
HWMON_I_INPUT | HWMON_I_LABEL,
HWMON_I_INPUT | HWMON_I_LABEL),
HWMON_CHANNEL_INFO(curr,
HWMON_C_INPUT | HWMON_C_LABEL,
HWMON_C_INPUT | HWMON_C_LABEL,
HWMON_C_INPUT | HWMON_C_LABEL,
HWMON_C_INPUT | HWMON_C_LABEL,
HWMON_C_INPUT | HWMON_C_LABEL,
HWMON_C_INPUT | HWMON_C_LABEL,
HWMON_C_INPUT | HWMON_C_LABEL,
HWMON_C_INPUT | HWMON_C_LABEL),
NULL
@ -326,6 +598,35 @@ static int aqc_raw_event(struct hid_device *hdev, struct hid_report *report, u8
priv->temp_input[i] = sensor_value * 10;
}
break;
case octo:
priv->power_cycles = get_unaligned_be32(data + OCTO_POWER_CYCLES);
/* Fan speed and related readings */
for (i = 0; i < OCTO_NUM_FANS; i++) {
priv->speed_input[i] =
get_unaligned_be16(data + octo_sensor_fan_offsets[i] +
OCTO_FAN_SPEED_OFFSET);
priv->power_input[i] =
get_unaligned_be16(data + octo_sensor_fan_offsets[i] +
OCTO_FAN_POWER_OFFSET) * 10000;
priv->voltage_input[i] =
get_unaligned_be16(data + octo_sensor_fan_offsets[i] +
OCTO_FAN_VOLTAGE_OFFSET) * 10;
priv->current_input[i] =
get_unaligned_be16(data + octo_sensor_fan_offsets[i] +
OCTO_FAN_CURRENT_OFFSET);
}
/* Temperature sensor readings */
for (i = 0; i < OCTO_NUM_SENSORS; i++) {
sensor_value = get_unaligned_be16(data + OCTO_SENSOR_START +
i * OCTO_SENSOR_SIZE);
if (sensor_value == OCTO_SENSOR_DISCONNECTED)
priv->temp_input[i] = -ENODATA;
else
priv->temp_input[i] = sensor_value * 10;
}
break;
default:
break;
}
@ -378,8 +679,14 @@ static void aqc_debugfs_init(struct aqc_data *priv)
debugfs_create_file("serial_number", 0444, priv->debugfs, priv, &serial_number_fops);
debugfs_create_file("firmware_version", 0444, priv->debugfs, priv, &firmware_version_fops);
if (priv->kind == d5next)
switch (priv->kind) {
case d5next:
case octo:
debugfs_create_file("power_cycles", 0444, priv->debugfs, priv, &power_cycles_fops);
break;
default:
break;
}
}
#else
@ -419,9 +726,30 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
switch (hdev->product) {
case USB_PRODUCT_ID_D5NEXT:
priv->kind = d5next;
priv->temp_label = label_d5next_temp;
priv->speed_label = label_d5next_speeds;
priv->power_label = label_d5next_power;
priv->voltage_label = label_d5next_voltages;
priv->current_label = label_d5next_current;
break;
case USB_PRODUCT_ID_FARBWERK360:
priv->kind = farbwerk360;
priv->temp_label = label_temp_sensors;
break;
case USB_PRODUCT_ID_OCTO:
priv->kind = octo;
priv->buffer_size = OCTO_CTRL_REPORT_SIZE;
priv->checksum_start = OCTO_CTRL_REPORT_CHECKSUM_START;
priv->checksum_length = OCTO_CTRL_REPORT_CHECKSUM_LENGTH;
priv->checksum_offset = OCTO_CTRL_REPORT_CHECKSUM_OFFSET;
priv->temp_label = label_temp_sensors;
priv->speed_label = label_fan_speed;
priv->power_label = label_fan_power;
priv->voltage_label = label_fan_voltage;
priv->current_label = label_fan_current;
break;
default:
break;
@ -429,6 +757,12 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
priv->name = aqc_device_names[priv->kind];
priv->buffer = devm_kzalloc(&hdev->dev, priv->buffer_size, GFP_KERNEL);
if (!priv->buffer)
return -ENOMEM;
mutex_init(&priv->mutex);
priv->hwmon_dev = hwmon_device_register_with_info(&hdev->dev, priv->name, priv,
&aqc_chip_info, NULL);
@ -462,6 +796,7 @@ static void aqc_remove(struct hid_device *hdev)
static const struct hid_device_id aqc_table[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_D5NEXT) },
{ HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_FARBWERK360) },
{ HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_OCTO) },
{ }
};