Re: [PATCH 6/6] hwmon: (aquacomputer_d5next) Support sensors for Aquacomputer Aquaero

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On Sun, Dec 18, 2022 at 12:31:31PM +0100, Leonard Anderweit wrote:
> Add support for reading sensors of the Aquacomputer Aquaero 5/6 fan
> controllers. These fan controllers supports 4 fans, 8 physical
> temperature sensors, 8 virtual temperature sensors and 2 flow sensors.
> Temperature and flow sensor reading implemented by Aleksa Savic [1] [2]
> [3].
> 
> [1] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/pull/31
> [2] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/pull/51
> [3] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/pull/55
> 
> Originally-from: Aleksa Savic <savicaleksa83@xxxxxxxxx>
> Signed-off-by: Leonard Anderweit <leonard.anderweit@xxxxxxxxx>

Series applied to hwmon-next.

Thanks,
Guenter

> ---
>  Documentation/hwmon/aquacomputer_d5next.rst |   5 +
>  drivers/hwmon/aquacomputer_d5next.c         | 108 ++++++++++++++++++--
>  2 files changed, 104 insertions(+), 9 deletions(-)
> 
> diff --git a/Documentation/hwmon/aquacomputer_d5next.rst b/Documentation/hwmon/aquacomputer_d5next.rst
> index 637bdbc8fcad..b94ff08080bf 100644
> --- a/Documentation/hwmon/aquacomputer_d5next.rst
> +++ b/Documentation/hwmon/aquacomputer_d5next.rst
> @@ -5,6 +5,7 @@ Kernel driver aquacomputer-d5next
>  
>  Supported devices:
>  
> +* Aquacomputer Aquaero 5/6 fan controllers
>  * Aquacomputer D5 Next watercooling pump
>  * Aquacomputer Farbwerk RGB controller
>  * Aquacomputer Farbwerk 360 RGB controller
> @@ -20,6 +21,10 @@ Description
>  This driver exposes hardware sensors of listed Aquacomputer devices, which
>  communicate through proprietary USB HID protocols.
>  
> +The Aquaero devices expose eight temperature sensors, eight virtual temperature
> +sensors and two flow senors. The fans expose their speed (in RPM), power,
> +voltage and current.
> +
>  For the D5 Next pump, available sensors are pump and fan speed, power, voltage
>  and current, as well as coolant temperature and eight virtual temp sensors. Also
>  available through debugfs are the serial number, firmware version and power-on
> diff --git a/drivers/hwmon/aquacomputer_d5next.c b/drivers/hwmon/aquacomputer_d5next.c
> index d28d7079917a..0fd00cfb86c8 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, High Flow Next)
> + * Quadro, High Flow Next, Aquaero)
>   *
>   * Aquacomputer devices send HID reports (with ID 0x01) every second to report
>   * sensor values.
> @@ -21,6 +21,7 @@
>  #include <asm/unaligned.h>
>  
>  #define USB_VENDOR_ID_AQUACOMPUTER	0x0c70
> +#define USB_PRODUCT_ID_AQUAERO		0xf001
>  #define USB_PRODUCT_ID_FARBWERK		0xf00a
>  #define USB_PRODUCT_ID_QUADRO		0xf00d
>  #define USB_PRODUCT_ID_D5NEXT		0xf00e
> @@ -28,7 +29,7 @@
>  #define USB_PRODUCT_ID_OCTO		0xf011
>  #define USB_PRODUCT_ID_HIGHFLOWNEXT	0xf012
>  
> -enum kinds { d5next, farbwerk, farbwerk360, octo, quadro, highflownext };
> +enum kinds { d5next, farbwerk, farbwerk360, octo, quadro, highflownext, aquaero };
>  
>  static const char *const aqc_device_names[] = {
>  	[d5next] = "d5next",
> @@ -36,7 +37,8 @@ static const char *const aqc_device_names[] = {
>  	[farbwerk360] = "farbwerk360",
>  	[octo] = "octo",
>  	[quadro] = "quadro",
> -	[highflownext] = "highflownext"
> +	[highflownext] = "highflownext",
> +	[aquaero] = "aquaero"
>  };
>  
>  #define DRIVER_NAME			"aquacomputer_d5next"
> @@ -57,7 +59,7 @@ static u8 secondary_ctrl_report[] = {
>  	0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x34, 0xC6
>  };
>  
> -/* Info, sensor sizes and offsets for all Aquacomputer devices */
> +/* Info, sensor sizes and offsets for most Aquacomputer devices */
>  #define AQC_SERIAL_START		0x3
>  #define AQC_FIRMWARE_VERSION		0xD
>  
> @@ -69,6 +71,24 @@ static u8 secondary_ctrl_report[] = {
>  #define AQC_FAN_POWER_OFFSET		0x06
>  #define AQC_FAN_SPEED_OFFSET		0x08
>  
> +/* Specs of the Aquaero fan controllers */
> +#define AQUAERO_SERIAL_START			0x07
> +#define AQUAERO_FIRMWARE_VERSION		0x0B
> +#define AQUAERO_NUM_FANS			4
> +#define AQUAERO_NUM_SENSORS			8
> +#define AQUAERO_NUM_VIRTUAL_SENSORS		8
> +#define AQUAERO_NUM_FLOW_SENSORS		2
> +
> +/* Sensor report offsets for Aquaero fan controllers */
> +#define AQUAERO_SENSOR_START			0x65
> +#define AQUAERO_VIRTUAL_SENSOR_START		0x85
> +#define AQUAERO_FLOW_SENSORS_START		0xF9
> +#define AQUAERO_FAN_VOLTAGE_OFFSET		0x04
> +#define AQUAERO_FAN_CURRENT_OFFSET		0x06
> +#define AQUAERO_FAN_POWER_OFFSET		0x08
> +#define AQUAERO_FAN_SPEED_OFFSET		0x00
> +static u16 aquaero_sensor_fan_offsets[] = { 0x167, 0x173, 0x17f, 0x18B };
> +
>  /* Specs of the D5 Next pump */
>  #define D5NEXT_NUM_FANS			2
>  #define D5NEXT_NUM_SENSORS		1
> @@ -181,12 +201,16 @@ static const char *const label_d5next_current[] = {
>  	"Fan current"
>  };
>  
> -/* Labels for Farbwerk, Farbwerk 360 and Octo and Quadro temperature sensors */
> +/* Labels for Aquaero, Farbwerk, Farbwerk 360 and Octo and Quadro temperature sensors */
>  static const char *const label_temp_sensors[] = {
>  	"Sensor 1",
>  	"Sensor 2",
>  	"Sensor 3",
> -	"Sensor 4"
> +	"Sensor 4",
> +	"Sensor 5",
> +	"Sensor 6",
> +	"Sensor 7",
> +	"Sensor 8"
>  };
>  
>  static const char *const label_virtual_temp_sensors[] = {
> @@ -262,6 +286,16 @@ static const char *const label_quadro_speeds[] = {
>  	"Flow speed [dL/h]"
>  };
>  
> +/* Labels for Aquaero fan speeds */
> +static const char *const label_aquaero_speeds[] = {
> +	"Fan 1 speed",
> +	"Fan 2 speed",
> +	"Fan 3 speed",
> +	"Fan 4 speed",
> +	"Flow sensor 1 [dL/h]",
> +	"Flow sensor 2 [dL/h]"
> +};
> +
>  /* Labels for High Flow Next */
>  static const char *const label_highflownext_temp_sensors[] = {
>  	"Coolant temp",
> @@ -290,6 +324,14 @@ struct aqc_fan_structure_offsets {
>  	u8 speed;
>  };
>  
> +/* Fan structure offsets for Aquaero */
> +static struct aqc_fan_structure_offsets aqc_aquaero_fan_structure = {
> +	.voltage = AQUAERO_FAN_VOLTAGE_OFFSET,
> +	.curr = AQUAERO_FAN_CURRENT_OFFSET,
> +	.power = AQUAERO_FAN_POWER_OFFSET,
> +	.speed = AQUAERO_FAN_SPEED_OFFSET
> +};
> +
>  /* Fan structure offsets for all devices except Aquaero */
>  static struct aqc_fan_structure_offsets aqc_general_fan_structure = {
>  	.voltage = AQC_FAN_VOLTAGE_OFFSET,
> @@ -496,6 +538,7 @@ static umode_t aqc_is_visible(const void *data, enum hwmon_sensor_types type, u3
>  				if (channel < 3)
>  					return 0444;
>  				break;
> +			case aquaero:
>  			case quadro:
>  				/* Special case to support flow sensors */
>  				if (channel < priv->num_fans + priv->num_flow_sensors)
> @@ -977,6 +1020,42 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
>  		goto fail_and_stop;
>  
>  	switch (hdev->product) {
> +	case USB_PRODUCT_ID_AQUAERO:
> +		/*
> +		 * Aquaero presents itself as three HID devices under the same product ID:
> +		 * "aquaero keyboard/mouse", "aquaero System Control" and "aquaero Device",
> +		 * which is the one we want to communicate with. Unlike most other Aquacomputer
> +		 * devices, Aquaero does not return meaningful data when explicitly requested
> +		 * using GET_FEATURE_REPORT.
> +		 *
> +		 * The difference between "aquaero Device" and the other two is in the collections
> +		 * they present. The two other devices have the type of the second element in
> +		 * their respective collections set to 1, while the real device has it set to 0.
> +		 */
> +		if (hdev->collection[1].type != 0) {
> +			ret = -ENODEV;
> +			goto fail_and_close;
> +		}
> +
> +		priv->kind = aquaero;
> +
> +		priv->num_fans = AQUAERO_NUM_FANS;
> +		priv->fan_sensor_offsets = aquaero_sensor_fan_offsets;
> +
> +		priv->num_temp_sensors = AQUAERO_NUM_SENSORS;
> +		priv->temp_sensor_start_offset = AQUAERO_SENSOR_START;
> +		priv->num_virtual_temp_sensors = AQUAERO_NUM_VIRTUAL_SENSORS;
> +		priv->virtual_temp_sensor_start_offset = AQUAERO_VIRTUAL_SENSOR_START;
> +		priv->num_flow_sensors = AQUAERO_NUM_FLOW_SENSORS;
> +		priv->flow_sensors_start_offset = AQUAERO_FLOW_SENSORS_START;
> +
> +		priv->temp_label = label_temp_sensors;
> +		priv->virtual_temp_label = label_virtual_temp_sensors;
> +		priv->speed_label = label_aquaero_speeds;
> +		priv->power_label = label_fan_power;
> +		priv->voltage_label = label_fan_voltage;
> +		priv->current_label = label_fan_current;
> +		break;
>  	case USB_PRODUCT_ID_D5NEXT:
>  		priv->kind = d5next;
>  
> @@ -1100,10 +1179,20 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
>  		break;
>  	}
>  
> -	priv->serial_number_start_offset = AQC_SERIAL_START;
> -	priv->firmware_version_offset = AQC_FIRMWARE_VERSION;
> +	switch (priv->kind) {
> +	case aquaero:
> +		priv->serial_number_start_offset = AQUAERO_SERIAL_START;
> +		priv->firmware_version_offset = AQUAERO_FIRMWARE_VERSION;
> +
> +		priv->fan_structure = &aqc_aquaero_fan_structure;
> +		break;
> +	default:
> +		priv->serial_number_start_offset = AQC_SERIAL_START;
> +		priv->firmware_version_offset = AQC_FIRMWARE_VERSION;
>  
> -	priv->fan_structure = &aqc_general_fan_structure;
> +		priv->fan_structure = &aqc_general_fan_structure;
> +		break;
> +	}
>  
>  	if (priv->buffer_size != 0) {
>  		priv->checksum_start = 0x01;
> @@ -1152,6 +1241,7 @@ 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_AQUAERO) },
>  	{ HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_D5NEXT) },
>  	{ HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_FARBWERK) },
>  	{ HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_FARBWERK360) },



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