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Message-ID: <e460edb5-813b-4d37-867b-3d383c84a1c6@roeck-us.net>
Date: Sun, 12 Mar 2023 10:41:38 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Leonard Anderweit <leonard.anderweit@...il.com>
Cc: linux-hwmon@...r.kernel.org,
Aleksa Savic <savicaleksa83@...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 v2 1/6] hwmon: (aquacomputer_d5next) Support one byte
control values
On Tue, Feb 14, 2023 at 11:02:16PM +0100, Leonard Anderweit wrote:
> Add support for one byte control values. This extends aqc_set_ctrl_val() and
> aqc_get_ctrl_val() with a type. Currently supported types are AQC_8 (one byte)
> and AQC_BE16 (two bytes big endian). More types will be added in the future.
>
> Signed-off-by: Leonard Anderweit <leonard.anderweit@...il.com>
Applied. In the future, please make sure that the line length in the
description has no more than 75 columns.
Thanks,
Guenter
> ---
> drivers/hwmon/aquacomputer_d5next.c | 48 +++++++++++++++++++++++------
> 1 file changed, 38 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/hwmon/aquacomputer_d5next.c b/drivers/hwmon/aquacomputer_d5next.c
> index 12682a610ce7..babfd998e70c 100644
> --- a/drivers/hwmon/aquacomputer_d5next.c
> +++ b/drivers/hwmon/aquacomputer_d5next.c
> @@ -70,6 +70,10 @@ static u8 secondary_ctrl_report[] = {
> /* Report IDs for legacy devices */
> #define POWERADJUST3_STATUS_REPORT_ID 0x03
>
> +/* Data types for reading and writing control reports */
> +#define AQC_8 0
> +#define AQC_BE16 1
> +
> /* Info, sensor sizes and offsets for most Aquacomputer devices */
> #define AQC_SERIAL_START 0x3
> #define AQC_FIRMWARE_VERSION 0xD
> @@ -544,7 +548,7 @@ static int aqc_send_ctrl_data(struct aqc_data *priv)
> }
>
> /* Refreshes the control buffer and stores value at offset in val */
> -static int aqc_get_ctrl_val(struct aqc_data *priv, int offset, long *val)
> +static int aqc_get_ctrl_val(struct aqc_data *priv, int offset, long *val, int type)
> {
> int ret;
>
> @@ -554,14 +558,23 @@ static int aqc_get_ctrl_val(struct aqc_data *priv, int offset, long *val)
> if (ret < 0)
> goto unlock_and_return;
>
> - *val = (s16)get_unaligned_be16(priv->buffer + offset);
> + switch (type) {
> + case AQC_BE16:
> + *val = (s16)get_unaligned_be16(priv->buffer + offset);
> + break;
> + case AQC_8:
> + *val = priv->buffer[offset];
> + break;
> + default:
> + ret = -EINVAL;
> + }
>
> unlock_and_return:
> mutex_unlock(&priv->mutex);
> return ret;
> }
>
> -static int aqc_set_ctrl_val(struct aqc_data *priv, int offset, long val)
> +static int aqc_set_ctrl_val(struct aqc_data *priv, int offset, long val, int type)
> {
> int ret;
>
> @@ -571,7 +584,19 @@ static int aqc_set_ctrl_val(struct aqc_data *priv, int offset, long val)
> if (ret < 0)
> goto unlock_and_return;
>
> - put_unaligned_be16((s16)val, priv->buffer + offset);
> + switch (type) {
> + case AQC_BE16:
> + put_unaligned_be16((s16)val, priv->buffer + offset);
> + break;
> + case AQC_8:
> + priv->buffer[offset] = (u8)val;
> + break;
> + default:
> + ret = -EINVAL;
> + }
> +
> + if (ret < 0)
> + goto unlock_and_return;
>
> ret = aqc_send_ctrl_data(priv);
>
> @@ -775,7 +800,7 @@ static int aqc_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
> case hwmon_temp_offset:
> ret =
> aqc_get_ctrl_val(priv, priv->temp_ctrl_offset +
> - channel * AQC_SENSOR_SIZE, val);
> + channel * AQC_SENSOR_SIZE, val, AQC_BE16);
> if (ret < 0)
> return ret;
>
> @@ -791,7 +816,8 @@ static int aqc_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
> *val = priv->speed_input[channel];
> break;
> case hwmon_fan_pulses:
> - ret = aqc_get_ctrl_val(priv, priv->flow_pulses_ctrl_offset, val);
> + ret = aqc_get_ctrl_val(priv, priv->flow_pulses_ctrl_offset,
> + val, AQC_BE16);
> if (ret < 0)
> return ret;
> break;
> @@ -804,7 +830,8 @@ static int aqc_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
> break;
> case hwmon_pwm:
> if (priv->fan_ctrl_offsets) {
> - ret = aqc_get_ctrl_val(priv, priv->fan_ctrl_offsets[channel], val);
> + ret = aqc_get_ctrl_val(priv, priv->fan_ctrl_offsets[channel],
> + val, AQC_BE16);
> if (ret < 0)
> return ret;
>
> @@ -877,7 +904,7 @@ static int aqc_write(struct device *dev, enum hwmon_sensor_types type, u32 attr,
> val = clamp_val(val, -15000, 15000) / 10;
> ret =
> aqc_set_ctrl_val(priv, priv->temp_ctrl_offset +
> - channel * AQC_SENSOR_SIZE, val);
> + channel * AQC_SENSOR_SIZE, val, AQC_BE16);
> if (ret < 0)
> return ret;
> break;
> @@ -889,7 +916,8 @@ static int aqc_write(struct device *dev, enum hwmon_sensor_types type, u32 attr,
> switch (attr) {
> case hwmon_fan_pulses:
> val = clamp_val(val, 10, 1000);
> - ret = aqc_set_ctrl_val(priv, priv->flow_pulses_ctrl_offset, val);
> + ret = aqc_set_ctrl_val(priv, priv->flow_pulses_ctrl_offset,
> + val, AQC_BE16);
> if (ret < 0)
> return ret;
> break;
> @@ -906,7 +934,7 @@ static int aqc_write(struct device *dev, enum hwmon_sensor_types type, u32 attr,
> return pwm_value;
>
> ret = aqc_set_ctrl_val(priv, priv->fan_ctrl_offsets[channel],
> - pwm_value);
> + pwm_value, AQC_BE16);
> if (ret < 0)
> return ret;
> }
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