linux-kernel - RE: [PATCH v4 0/4] Add a property to turn off the max touch controller if not used

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Date: Wed, 17 Apr 2024 08:12:30 -0300
From: Joao Paulo Goncalves <jpaulo.silvagoncalves@...il.com>
To: eichest@...il.com
Cc: alexandre.belloni@...tlin.com,
	claudiu.beznea@...on.dev,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	dmitry.torokhov@...il.com,
	krzysztof.kozlowski+dt@...aro.org,
	linus.walleij@...aro.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	nick@...anahar.org,
	nicolas.ferre@...rochip.com,
	robh@...nel.org,
	Joao Paulo Goncalves <joao.goncalves@...adex.com>
Subject: RE: [PATCH v4 0/4] Add a property to turn off the max touch controller if not used 

> Our hardware has a shared regulator that powers various peripherals such
> as the display, touch, USB hub, etc. Since the Maxtouch controller
> doesn't currently allow it to be turned off, this regulator has to stay
> on when not used. This increases the overall power consumption. In order
> to turn off the controller when the system does not use it, this series
> adds a device tree property to the maxtouch driver that allows the
> controller to be turned off completely and ensurs that it can resume
> from the power off state.
>
> Changes since v3:
> - Move the power on part to mxt_start and the power off part to
>   mxt_stop. This allows to turn the touch controller off even when not
>   in use and not only when being suspended (Dmitry)
>
> Changes since v2:
> - Add Reviewed-by tags from Linus and Krzysztof to the dt-bindings patch
>
> Changes since v1:
> - Rename the property and change the description (Krzysztof, Linus,
> Dmitry, Conor)
>
> Stefan Eichenberger (4):
>   Input: atmel_mxt_ts - add power off and power on functions
>   Input: atmel_mxt_ts - move calls to register the input device to
>     separate function
>   dt-bindings: input: atmel,maxtouch: add poweroff-sleep property
>   Input: atmel_mxt_ts - add support for poweroff-sleep
>
>  .../bindings/input/atmel,maxtouch.yaml        |   6 +
>  drivers/input/touchscreen/atmel_mxt_ts.c      | 162 +++++++++++++-----
>  2 files changed, 124 insertions(+), 44 deletions(-)
>
> --
> 2.40.1
>

Reviewed-by: Joao Paulo Goncalves <joao.goncalves@...adex.com>

Regards,
Joao Paulo