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References: <20231001-pxa-gpio-v4-0-0f3b975e6ed5@skole.hr> <20231001-pxa-gpio-v4-2-0f3b975e6ed5@skole.hr>
In-Reply-To: <20231001-pxa-gpio-v4-2-0f3b975e6ed5@skole.hr>
From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Sun, 1 Oct 2023 17:34:32 +0300
Message-ID: <CAHp75VeYduD=uXpNKcxhwqFTkahUbz_Ockqi7KVO88cpeVHbQQ@mail.gmail.com>
Subject: Re: [PATCH RFC v4 2/6] ARM: pxa: Convert Spitz LEDs to GPIO descriptors
To:     =?UTF-8?Q?Duje_Mihanovi=C4=87?= <duje.mihanovic@skole.hr>
Cc:     Daniel Mack <daniel@zonque.org>,
        Haojian Zhuang <haojian.zhuang@gmail.com>,
        Robert Jarzmik <robert.jarzmik@free.fr>,
        Russell King <linux@armlinux.org.uk>,
        Alan Stern <stern@rowland.harvard.edu>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Bartosz Golaszewski <brgl@bgdev.pl>,
        Andy Shevchenko <andy@kernel.org>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-usb@vger.kernel.org, linux-gpio@vger.kernel.org,
        linux-input@vger.kernel.org, linux-spi@vger.kernel.org
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On Sun, Oct 1, 2023 at 5:13=E2=80=AFPM Duje Mihanovi=C4=87 <duje.mihanovic@=
skole.hr> wrote:
>
> Sharp's Spitz board still uses the legacy GPIO interface for configuring
> its two onboard LEDs.
>
> Convert them to use the GPIO descriptor interface.

...

>  static void __init spitz_leds_init(void)
>  {
> +       gpiod_add_lookup_table(&spitz_led_gpio_table);
>         platform_device_register(&spitz_led_device);
> +       spitz_gpio_leds[0].gpiod =3D gpiod_get_index(&spitz_led_device.de=
v,
> +                       NULL, 0, GPIOD_ASIS);
> +       spitz_gpio_leds[1].gpiod =3D gpiod_get_index(&spitz_led_device.de=
v,
> +                       NULL, 1, GPIOD_ASIS);
>  }

What's the point of keeping a lookup table after we got descriptors out of =
it?

--=20
With Best Regards,
Andy Shevchenko