linux-kernel - Re: [PATCH 0/2] gpio: mmio: introduce BGPIOF_NO_SET_ON

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Message-ID: <CAMhs-H-Teedp8ptaDvEFfye+zRsgE-n190doda3-2WkrUY=zyQ@mail.gmail.com>
Date:   Sun, 15 Mar 2020 15:17:54 +0100
From:   Sergio Paracuellos <sergio.paracuellos@...il.com>
To:     Chuanhong Guo <gch981213@...il.com>
Cc:     "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        René van Dorst <opensource@...rst.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/2] gpio: mmio: introduce BGPIOF_NO_SET_ON_INPUT

Hi,

On Sun, Mar 15, 2020 at 1:14 PM Chuanhong Guo <gch981213@...il.com> wrote:
>
> Currently gpio-hog doesn't work on gpio-mt7621 driver. On further
> debugging, I noticed that set/clear register on this controller
> only works on output pins. We need to setup pin direction before
> writing values in bgpio_dir_out for a correct gpio-hog behavior.
> This patchset introduces a new flag BGPIOF_NO_SET_ON_INPUT for
> these kind of controller and set this flag for gpio-mt7621.
>
> Chuanhong Guo (2):
>   gpio: mmio: introduce BGPIOF_NO_SET_ON_INPUT
>   gpio: mt7621: add BGPIOF_NO_SET_ON_INPUT flag
>
>  drivers/gpio/gpio-mmio.c    | 23 +++++++++++++++++++----
>  drivers/gpio/gpio-mt7621.c  |  4 ++--
>  include/linux/gpio/driver.h |  1 +
>  3 files changed, 22 insertions(+), 6 deletions(-)
>

This series looks good to me.

Reviewed-by: Sergio Paracuellos <sergio.paracuellos@...il.com>

Best regards,
    Sergio Paracuellos

> --
> 2.24.1
>