linux-kernel - Re: [PATCH v3 0/3] iio: humidity: hdc3020: add power and reset management

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Message-ID: <20240310152443.4cbd7c4e@jic23-huawei>
Date: Sun, 10 Mar 2024 15:24:43 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Javier Carrasco <javier.carrasco.cruz@...il.com>
Cc: Lars-Peter Clausen <lars@...afoo.de>, Li peiyu <579lpy@...il.com>, Rob
 Herring <robh+dt@...nel.org>, Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>,
 Jonathan Cameron <Jonathan.Cameron@...wei.com>,
 linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
 devicetree@...r.kernel.org, Krzysztof Kozlowski
 <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v3 0/3] iio: humidity: hdc3020: add power and reset
 management

On Sun, 03 Mar 2024 22:54:19 +0100
Javier Carrasco <javier.carrasco.cruz@...il.com> wrote:

> This series adds power management for the hdc3020 humidity and
> temperature sensor as well as control over the reset signal the device
> provides.
> 
> The hdc3020 carries out measurements automatically, which is not
> necessary in low-power modes. Furthermore, if the low-power
> configuration turns off the device, proper initialization is required to
> account for the setup times and initial status register value.
> 
> This device provides an active low reset signal that must be handled if
> connected. This signal can be used by the driver to keep the device
> under minimal power consumption during low-power modes if the power
> supply stays active.
> 
> This series uses char-misc-next as basis to include the last additions
> to the driver to handle events [1] as well as the fix to include the
> entries in the Makefile and Kconfig files [2].
> 
> [1] https://lore.kernel.org/linux-iio/20240214085350.19382-1-dima.fedrau@gmail.com/
> [2] https://lore.kernel.org/linux-iio/20240121135123.71506-1-jic23@kernel.org/
> 
> Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
Applied to the togreg-normal branch of iio.git and pushed out for 0-day to
see what it can find.  Note this is now 6.10 material and I'll be rebasing
on rc1 once available. It won't go into a tree next picks up until after that.

Thanks,

Jonathan

> ---
> Changes in v3:
> - Drop unnecessary casting to void in dev_set_drvdata.
> - Call devm_add_action_or_reset right after powering on.
> - Link to v2: https://lore.kernel.org/r/20240226-hdc3020-pm-v2-0-cec6766086e8@gmail.com
> 
> Changes in v2:
> - Trigger power off sequence if the power on sequence fails.
> - Check return value of hdc3020_power_on() in the probe.
> - Remove type casting for void pointer.
> - Link to v1: https://lore.kernel.org/r/20240220-hdc3020-pm-v1-0-d8e60dbe79e9@gmail.com
> 
> ---
> Javier Carrasco (3):
>       iio: humidity: hdc3020: add power management
>       dt-bindings: iio: humidity: hdc3020: add reset-gpios
>       iio: humidity: hdc3020: add reset management
> 
>  .../bindings/iio/humidity/ti,hdc3020.yaml          |   5 +
>  drivers/iio/humidity/hdc3020.c                     | 111 +++++++++++++++++----
>  2 files changed, 97 insertions(+), 19 deletions(-)
> ---
> base-commit: d4551c189d6e6a3fcf7f625bd4b273e770fad35a
> change-id: 20240217-hdc3020-pm-177983de3cab
> 
> Best regards,