linux-kernel - Re: [PATCH v2 1/1] extcon: usb-gpio: add pinctrl operation during system PM

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Message-id: <586F55A8.9050100@samsung.com>
Date:   Fri, 06 Jan 2017 17:30:32 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Peter Chen <peter.chen@....com>, myungjoo.ham@...sung.com
Cc:     rogerq@...com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] extcon: usb-gpio: add pinctrl operation during
 system PM

Hi Peter,

On 2017년 01월 04일 16:19, Peter Chen wrote:
> At some systems, the pinctrl setting will be lost or needs to
> set as "sleep" state to save power consumption. So, we need to
> configure pinctrl as "sleep" state when system enters suspend,
> and as "default" state after system resumes. In this way, the
> pinctrl value can be recovered as "default" state after resuming.
> 
> Signed-off-by: Peter Chen <peter.chen@....com>
> ---
> Changes for v2:
> - Add header file for pinctrl to avoid build error
> - Only set pin as "sleep" state when the wakeup is not requested
> 
>  drivers/extcon/extcon-usb-gpio.c | 7 +++++++
>  1 file changed, 7 insertions(+)

Applied it. Thanks.

-- 
Best Regards,
Chanwoo Choi
S/W Center, Samsung Electronics