Re: [PATCH v3] pinctrl: samsung: fix suspend/resume functionality

[Linus Walleij]

On Fri, May 17, 2013 at 6:33 AM, Doug Anderson <dianders@xxxxxxxxxxxx> wrote:

> The GPIO states need to be restored after s2r and this is not currently
> supported in the pinctrl driver. This patch saves the gpio states before
> suspend and restores them after resume.
>
> Saving and restoring is done very early using syscore_ops and must
> happen before pins are released from their powerdown state.
>
> Patch originally from Prathyush K <prathyush.k@xxxxxxxxxxx> but
> rewritten by Doug Anderson <dianders@xxxxxxxxxxxx>.
>
> Signed-off-by: Prathyush K <prathyush.k@xxxxxxxxxxx>
> Signed-off-by: Doug Anderson <dianders@xxxxxxxxxxxx>
> ---
> Changes in v3:
> - Skip save and restore for banks with no powerdown config.
>
> Changes in v2:
> - Now uses sycore_ops to make sure we're early enough.
> - Try to handle two CON registers better.
> - Should handle s3c24xx better as per Heiko.
> - Simpler code; no longer tries to avoid glitching lines since
>   we _think_ all current SoCs should have pins in power down state
>   when the restore is called.
> - Dropped eint patch for now; Tomasz will post his version.

Looks good to me.
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

How are you going to merge this?

Samsung tree?

My pinctrl development tree?

Or my fixes tree, if it's a regression for v3.10?

Yours,
Linus Walleij
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