linux-kernel - Re: [PATCH v4] i2c/at91: adopt pinctrl support

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Date:	Mon, 10 Nov 2014 14:13:28 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Wenyou Yang <wenyou.yang@...el.com>, wsa@...-dreams.de,
	ludovic.desroches@...el.com
CC:	khilman@...nel.org, nicolas.ferre@...el.com,
	linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4] i2c/at91: adopt pinctrl support

Hello.

On 11/10/2014 4:55 AM, Wenyou Yang wrote:

> Amend the at91 i2c pin controller

    You're amending the hardware itself, really? :-)

> to optionally take a pin controlhandle

    I don't see the code that does this.

> and set the state of the pins to:
> - "default" on boot and resume.

    I don't see where you are changing anything for the probe() method. 
Perhaps you meant the driver core code which selects the dafault profile 
automatically?

> - "sleep" on suspend().

> This should make it possible to optimize energy usage for the pins
> both for the suspend/resume cycle

> Signed-off-by: Wenyou Yang <wenyou.yang@...el.com>
> ---
> Hi Wolfram,
>
> Thanks a lot.
>
> The change of this version is to remove
> 	pinctrl_pm_select_default_state(&pdev->dev) from the _probe function.

    Aha, you've specifically removed this...

WBR, Sergei

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