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Date: Fri, 25 Nov 2022 17:49:27 -0800
From: Guenter Roeck <linux@...ck-us.net>
To: Aleksa Savic <savicaleksa83@...il.com>, linux-hwmon@...r.kernel.org
Cc: leonard.anderweit@...il.com, 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] hwmon: (aquacomputer_d5next) Add support for Quadro flow
sensor pulses
On 11/25/22 13:55, Aleksa Savic wrote:
> Add support for reading and writing flow sensor pulses value on
> the Aquacomputer Quadro. Implemented by Leonard Anderweit [1].
>
> [1] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/pull/45
>
> Originally-from: Leonard Anderweit <leonard.anderweit@...il.com>
> Signed-off-by: Aleksa Savic <savicaleksa83@...il.com>
> ---
> Documentation/hwmon/aquacomputer_d5next.rst | 3 +-
> drivers/hwmon/aquacomputer_d5next.c | 68 ++++++++++++++++-----
> 2 files changed, 55 insertions(+), 16 deletions(-)
>
> diff --git a/Documentation/hwmon/aquacomputer_d5next.rst b/Documentation/hwmon/aquacomputer_d5next.rst
> index 15226346434d..637bdbc8fcad 100644
> --- a/Documentation/hwmon/aquacomputer_d5next.rst
> +++ b/Documentation/hwmon/aquacomputer_d5next.rst
> @@ -39,7 +39,7 @@ current.
>
> The Quadro exposes four physical and sixteen virtual temperature sensors, a flow
> sensor and four PWM controllable fans, along with their speed (in RPM), power,
> -voltage and current.
> +voltage and current. Flow sensor pulses are also available.
>
> The Farbwerk and Farbwerk 360 expose four temperature sensors. Additionally,
> sixteen virtual temperature sensors of the Farbwerk 360 are exposed.
> @@ -64,6 +64,7 @@ Sysfs entries
> temp[1-20]_input Physical/virtual temperature sensors (in millidegrees Celsius)
> temp[1-4]_offset Temperature sensor correction offset (in millidegrees Celsius)
> fan[1-8]_input Pump/fan speed (in RPM) / Flow speed (in dL/h)
> +fan5_pulses Quadro flow sensor pulses
> power[1-8]_input Pump/fan power (in micro Watts)
> in[0-7]_input Pump/fan voltage (in milli Volts)
> curr[1-8]_input Pump/fan current (in milli Amperes)
> diff --git a/drivers/hwmon/aquacomputer_d5next.c b/drivers/hwmon/aquacomputer_d5next.c
> index 49d3f9876fe8..77a3ac33d4ac 100644
> --- a/drivers/hwmon/aquacomputer_d5next.c
> +++ b/drivers/hwmon/aquacomputer_d5next.c
> @@ -136,6 +136,7 @@ static u8 quadro_sensor_fan_offsets[] = { 0x70, 0x7D, 0x8A, 0x97 };
>
> /* Control report offsets for the Quadro */
> #define QUADRO_TEMP_CTRL_OFFSET 0xA
> +#define QUADRO_FLOW_PULSES_CTRL_OFFSET 0x6
> static u16 quadro_ctrl_fan_offsets[] = { 0x37, 0x8c, 0xe1, 0x136 }; /* Fan speed offsets (0-100%) */
>
> /* Specs of High Flow Next flow sensor */
> @@ -303,6 +304,7 @@ struct aqc_data {
> u16 temp_ctrl_offset;
> u16 power_cycle_count_offset;
> u8 flow_sensor_offset;
> + u8 flow_pulses_ctrl_offset;
>
> /* General info, same across all devices */
> u32 serial_number[2];
> @@ -461,20 +463,32 @@ 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)
> - return 0444;
> + switch (attr) {
> + case hwmon_fan_input:
> + case hwmon_fan_label:
> + 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)
> + return 0444;
> + break;
> + default:
> + if (channel < priv->num_fans)
> + return 0444;
> + break;
> + }
> break;
> - default:
> - if (channel < priv->num_fans)
> - return 0444;
> + case hwmon_fan_pulses:
> + /* Special case for Quadro flow sensor */
> + if (priv->kind == quadro && channel == priv->num_fans)
> + return 0644;
> break;
I think "default:" is now missing here.
Guenter
> }
> break;
> @@ -552,7 +566,18 @@ static int aqc_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
> }
> break;
> case hwmon_fan:
> - *val = priv->speed_input[channel];
> + switch (attr) {
> + case hwmon_fan_input:
> + *val = priv->speed_input[channel];
> + break;
> + case hwmon_fan_pulses:
> + ret = aqc_get_ctrl_val(priv, priv->flow_pulses_ctrl_offset, val);
> + if (ret < 0)
> + return ret;
> + break;
> + default:
> + break;
> + }
> break;
> case hwmon_power:
> *val = priv->power_input[channel];
> @@ -632,6 +657,18 @@ static int aqc_write(struct device *dev, enum hwmon_sensor_types type, u32 attr,
> return -EOPNOTSUPP;
> }
> break;
> + case hwmon_fan:
> + switch (attr) {
> + case hwmon_fan_pulses:
> + val = clamp_val(val, 10, 1000);
> + ret = aqc_set_ctrl_val(priv, priv->flow_pulses_ctrl_offset, val);
> + if (ret < 0)
> + return ret;
> + break;
> + default:
> + break;
> + }
> + break;
> case hwmon_pwm:
> switch (attr) {
> case hwmon_pwm_input:
> @@ -691,7 +728,7 @@ static const struct hwmon_channel_info *aqc_info[] = {
> 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_PULSES,
> HWMON_F_INPUT | HWMON_F_LABEL,
> HWMON_F_INPUT | HWMON_F_LABEL,
> HWMON_F_INPUT | HWMON_F_LABEL),
> @@ -1000,6 +1037,7 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
> priv->buffer_size = QUADRO_CTRL_REPORT_SIZE;
>
> priv->flow_sensor_offset = QUADRO_FLOW_SENSOR_OFFSET;
> + priv->flow_pulses_ctrl_offset = QUADRO_FLOW_PULSES_CTRL_OFFSET;
> priv->power_cycle_count_offset = QUADRO_POWER_CYCLES;
>
> priv->temp_label = label_temp_sensors;
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