linux-kernel - Re: [PATCH 3/3] gpio: mmio: Use new flag BGPIOF_NO

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Message-ID: <CACRpkda1Dn8D7DRd8FcRmz0LesTvvGgJ-njSeG9GrnWB0N-VzQ@mail.gmail.com>
Date:   Fri, 27 Jan 2023 13:53:25 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     nl250060@....com
Cc:     Bartosz Golaszewski <brgl@...ev.pl>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] gpio: mmio: Use new flag BGPIOF_NO_INPUT

On Thu, Jan 26, 2023 at 11:18 AM Niall Leonard via B4 Submission
Endpoint <devnull+nl250060.ncr.com@...nel.org> wrote:

> From: Niall Leonard <nl250060@....com>
>
> Use the existing shadow data register 'bgpio_data' to allow
> the last written value to be returned by the read operation
> when BGPIOF_NO_INPUT flag is set.
>
> Signed-off-by: Niall Leonard <nl250060@....com>

Weird hardware, but given these restrictions it makes perfect sense
to have this.
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij