linux-kernel - Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as output

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Message-ID: <CAMuHMdV1+caNwbuk=Kw7cRUxcp1iC=YArnQXf2mcn+qnc6+OOQ@mail.gmail.com>
Date:   Sun, 16 Apr 2017 22:55:30 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Paul Kocialkowski <contact@...lk.fr>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Linux PWM List <linux-pwm@...r.kernel.org>,
        Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as output

Hi Paul,

On Sun, Apr 16, 2017 at 12:35 PM, Paul Kocialkowski <contact@...lk.fr> wrote:
> The move to a dedicated pwm_backlight_initial_power_state function in
> commit 7613c922315e308a6486d802abed2eb74443dffd modified the condition
> to set the enable gpio as output. This breaks specific use cases using
> that GPIO, such as tegra124-based nyan Chromebooks where backlight
> stopped working.
>
> This puts the condition back to the way it was before the move.
>
> Signed-off-by: Paul Kocialkowski <contact@...lk.fr>

Does "[PATCH v2] backlight: pwm_bl: Fix GPIO out for unimplemented
.get_direction()"
(https://lkml.org/lkml/2017/4/4/225) fix your issue?

Thanks!

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds