linux-kernel - Re: [PATCH V12 2/2] pinctrl: max77620: add pincontrol driver for MAX77620/MAX20024

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Date:	Tue, 24 May 2016 13:21:08 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	Rob Herring <robh+dt@...nel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH V12 2/2] pinctrl: max77620: add pincontrol driver for MAX77620/MAX20024

On Fri, May 13, 2016 at 7:19 AM, Laxman Dewangan <ldewangan@...dia.com> wrote:

> MAXIM Semiconductor's PMIC, MAX77620/MAX20024 has 8 GPIO pins
> which also act as the special function in alternate mode. Also
> there is configuration like push-pull, open drain, FPS timing
> etc for these pins.
>
> Add pin control driver to configure these parameters through
> pin control APIs.
>
> Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Patch applied for the next kernel cycle.

> +       switch (param) {
> +       case PIN_CONFIG_DRIVE_OPEN_DRAIN:
> +               if (mpci->pin_info[pin].drv_type == MAX77620_PIN_OD_DRV)
> +                       arg = 1;
> +               break;

Hmmmm OK is this one of those cases we discussed where
you need to be able to tell the pin config back-end to do the
open draining (etc) from the GPIO driver?

Yours,
Linus Walleij