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Date: Thu, 8 Sep 2022 11:50:50 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Aleksa Savic <savicaleksa83@...il.com>
Cc: linux-hwmon@...r.kernel.org, Jack Doan <me@...kdoan.com>,
Jean Delvare <jdelvare@...e.com>,
Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] hwmon: (aquacomputer_d5next) Add support for
Aquacomputer High Flow Next
On Wed, Sep 07, 2022 at 12:07:39PM +0200, Aleksa Savic wrote:
> Extend aquacomputer_d5next driver to expose various hardware
> sensors of the Aquacomputer High Flow Next flow sensor, which
> communicates through a proprietary USB HID protocol.
>
> The High Flow Next exposes +5V voltages, water quality, conductivity
> and flow readings. A temperature sensor can be connected to it, in
> which case it provides its reading and an estimation of the
> dissipated/absorbed power in the liquid cooling loop.
>
> Additionally, serial number and firmware version are exposed through
> debugfs.
>
> Registry offsets were discovered and tested by users on Github [1] [2].
>
> [1] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/issues/8
> [2] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/pull/34
>
> Signed-off-by: Aleksa Savic <savicaleksa83@...il.com>
Applied to hwmon-next.
Thanks,
Guenter
> ---
> Changes in v2:
> - Rebased code and docs properly
> ---
> Documentation/hwmon/aquacomputer_d5next.rst | 5 ++
> drivers/hwmon/Kconfig | 6 +-
> drivers/hwmon/aquacomputer_d5next.c | 91 ++++++++++++++++++++-
> 3 files changed, 96 insertions(+), 6 deletions(-)
>
> diff --git a/Documentation/hwmon/aquacomputer_d5next.rst b/Documentation/hwmon/aquacomputer_d5next.rst
> index b63a78d47624..e238533b5fe0 100644
> --- a/Documentation/hwmon/aquacomputer_d5next.rst
> +++ b/Documentation/hwmon/aquacomputer_d5next.rst
> @@ -10,6 +10,7 @@ Supported devices:
> * Aquacomputer Farbwerk 360 RGB controller
> * Aquacomputer Octo fan controller
> * Aquacomputer Quadro fan controller
> +* Aquacomputer High Flow Next sensor
>
> Author: Aleksa Savic
>
> @@ -43,6 +44,10 @@ voltage and current.
> The Farbwerk and Farbwerk 360 expose four temperature sensors. Additionally,
> sixteen virtual temperature sensors of the Farbwerk 360 are exposed.
>
> +The High Flow Next exposes +5V voltages, water quality, conductivity and flow readings.
> +A temperature sensor can be connected to it, in which case it provides its reading
> +and an estimation of the dissipated/absorbed power in the liquid cooling loop.
> +
> Depending on the device, not all sysfs and debugfs entries will be available.
> Writing to virtual temperature sensors is not currently supported.
>
> diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
> index d317aae183c1..18dc045d3fc5 100644
> --- a/drivers/hwmon/Kconfig
> +++ b/drivers/hwmon/Kconfig
> @@ -257,14 +257,14 @@ config SENSORS_AHT10
> will be called aht10.
>
> config SENSORS_AQUACOMPUTER_D5NEXT
> - tristate "Aquacomputer D5 Next, Octo, Quadro, Farbwerk, and Farbwerk 360"
> + tristate "Aquacomputer D5 Next, Octo, Quadro, Farbwerk, Farbwerk 360, High Flow Next"
> depends on USB_HID
> select CRC16
> help
> If you say yes here you get support for sensors and fans of
> the Aquacomputer D5 Next watercooling pump, Octo and Quadro fan
> - controllers, Farbwerk and Farbwerk 360 RGB controllers, where
> - available.
> + controllers, Farbwerk and Farbwerk 360 RGB controllers, High Flow
> + Next sensor, where available.
>
> This driver can also be built as a module. If so, the module
> will be called aquacomputer_d5next.
> diff --git a/drivers/hwmon/aquacomputer_d5next.c b/drivers/hwmon/aquacomputer_d5next.c
> index b2b0c4fdfa84..3ea25edfc7a5 100644
> --- a/drivers/hwmon/aquacomputer_d5next.c
> +++ b/drivers/hwmon/aquacomputer_d5next.c
> @@ -1,7 +1,7 @@
> // SPDX-License-Identifier: GPL-2.0+
> /*
> * hwmon driver for Aquacomputer devices (D5 Next, Farbwerk, Farbwerk 360, Octo,
> - * Quadro)
> + * Quadro, High Flow Next)
> *
> * Aquacomputer devices send HID reports (with ID 0x01) every second to report
> * sensor values.
> @@ -26,15 +26,17 @@
> #define USB_PRODUCT_ID_D5NEXT 0xf00e
> #define USB_PRODUCT_ID_FARBWERK360 0xf010
> #define USB_PRODUCT_ID_OCTO 0xf011
> +#define USB_PRODUCT_ID_HIGHFLOWNEXT 0xf012
>
> -enum kinds { d5next, farbwerk, farbwerk360, octo, quadro };
> +enum kinds { d5next, farbwerk, farbwerk360, octo, quadro, highflownext };
>
> static const char *const aqc_device_names[] = {
> [d5next] = "d5next",
> [farbwerk] = "farbwerk",
> [farbwerk360] = "farbwerk360",
> [octo] = "octo",
> - [quadro] = "quadro"
> + [quadro] = "quadro",
> + [highflownext] = "highflownext"
> };
>
> #define DRIVER_NAME "aquacomputer_d5next"
> @@ -120,6 +122,16 @@ static u8 quadro_sensor_fan_offsets[] = { 0x70, 0x7D, 0x8A, 0x97 };
> /* Fan speed registers in Quadro control report (from 0-100%) */
> static u16 quadro_ctrl_fan_offsets[] = { 0x36, 0x8b, 0xe0, 0x135 };
>
> +/* Register offsets for the High Flow Next */
> +#define HIGHFLOWNEXT_NUM_SENSORS 2
> +#define HIGHFLOWNEXT_SENSOR_START 85
> +#define HIGHFLOWNEXT_FLOW 81
> +#define HIGHFLOWNEXT_WATER_QUALITY 89
> +#define HIGHFLOWNEXT_POWER 91
> +#define HIGHFLOWNEXT_CONDUCTIVITY 95
> +#define HIGHFLOWNEXT_5V_VOLTAGE 97
> +#define HIGHFLOWNEXT_5V_VOLTAGE_USB 99
> +
> /* Labels for D5 Next */
> static const char *const label_d5next_temp[] = {
> "Coolant temp"
> @@ -228,6 +240,27 @@ static const char *const label_quadro_speeds[] = {
> "Flow speed [dL/h]"
> };
>
> +/* Labels for High Flow Next */
> +static const char *const label_highflownext_temp_sensors[] = {
> + "Coolant temp",
> + "External sensor"
> +};
> +
> +static const char *const label_highflownext_fan_speed[] = {
> + "Flow [dL/h]",
> + "Water quality [%]",
> + "Conductivity [nS/cm]",
> +};
> +
> +static const char *const label_highflownext_power[] = {
> + "Dissipated power",
> +};
> +
> +static const char *const label_highflownext_voltage[] = {
> + "+5V voltage",
> + "+5V USB voltage"
> +};
> +
> struct aqc_data {
> struct hid_device *hdev;
> struct device *hwmon_dev;
> @@ -390,6 +423,11 @@ static umode_t aqc_is_visible(const void *data, enum hwmon_sensor_types type, u3
> break;
> case hwmon_fan:
> switch (priv->kind) {
> + case highflownext:
> + /* Special case to support flow sensor, water quality and conductivity */
> + if (channel < 3)
> + return 0444;
> + break;
> case quadro:
> /* Special case to support flow sensor */
> if (channel < priv->num_fans + 1)
> @@ -402,6 +440,18 @@ static umode_t aqc_is_visible(const void *data, enum hwmon_sensor_types type, u3
> }
> break;
> case hwmon_power:
> + switch (priv->kind) {
> + case highflownext:
> + /* Special case to support one power sensor */
> + if (channel == 0)
> + return 0444;
> + break;
> + default:
> + if (channel < priv->num_fans)
> + return 0444;
> + break;
> + }
> + break;
> case hwmon_curr:
> if (channel < priv->num_fans)
> return 0444;
> @@ -413,6 +463,11 @@ static umode_t aqc_is_visible(const void *data, enum hwmon_sensor_types type, u3
> if (channel < priv->num_fans + 2)
> return 0444;
> break;
> + case highflownext:
> + /* Special case to support two voltage sensors */
> + if (channel < 2)
> + return 0444;
> + break;
> default:
> if (channel < priv->num_fans)
> return 0444;
> @@ -679,6 +734,22 @@ static int aqc_raw_event(struct hid_device *hdev, struct hid_report *report, u8
> case quadro:
> priv->speed_input[4] = get_unaligned_be16(data + priv->flow_sensor_offset);
> break;
> + case highflownext:
> + /* If external temp sensor is not connected, its power reading is also N/A */
> + if (priv->temp_input[1] == -ENODATA)
> + priv->power_input[0] = -ENODATA;
> + else
> + priv->power_input[0] =
> + get_unaligned_be16(data + HIGHFLOWNEXT_POWER) * 1000000;
> +
> + priv->voltage_input[0] = get_unaligned_be16(data + HIGHFLOWNEXT_5V_VOLTAGE) * 10;
> + priv->voltage_input[1] =
> + get_unaligned_be16(data + HIGHFLOWNEXT_5V_VOLTAGE_USB) * 10;
> +
> + priv->speed_input[0] = get_unaligned_be16(data + HIGHFLOWNEXT_FLOW);
> + priv->speed_input[1] = get_unaligned_be16(data + HIGHFLOWNEXT_WATER_QUALITY);
> + priv->speed_input[2] = get_unaligned_be16(data + HIGHFLOWNEXT_CONDUCTIVITY);
> + break;
> default:
> break;
> }
> @@ -851,6 +922,19 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
> priv->voltage_label = label_fan_voltage;
> priv->current_label = label_fan_current;
> break;
> + case USB_PRODUCT_ID_HIGHFLOWNEXT:
> + priv->kind = highflownext;
> +
> + priv->num_fans = 0;
> + priv->num_temp_sensors = HIGHFLOWNEXT_NUM_SENSORS;
> + priv->temp_sensor_start_offset = HIGHFLOWNEXT_SENSOR_START;
> + priv->power_cycle_count_offset = QUADRO_POWER_CYCLES;
> +
> + priv->temp_label = label_highflownext_temp_sensors;
> + priv->speed_label = label_highflownext_fan_speed;
> + priv->power_label = label_highflownext_power;
> + priv->voltage_label = label_highflownext_voltage;
> + break;
> default:
> break;
> }
> @@ -907,6 +991,7 @@ static const struct hid_device_id aqc_table[] = {
> { HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_FARBWERK360) },
> { HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_OCTO) },
> { HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_QUADRO) },
> + { HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_HIGHFLOWNEXT) },
> { }
> };
>
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