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From:   Linus Walleij <linus.walleij@linaro.org>
Date:   Tue, 10 Oct 2023 22:04:14 +0200
Message-ID: <CACRpkda4ZeQ8eYKqXBR7XmWj9jJF58C+PLeRWqx2m7aSf2FWQw@mail.gmail.com>
Subject: Re: [PATCH RFT v7 2/6] ARM: pxa: Convert Spitz LEDs to GPIO descriptors
To:     Bartosz Golaszewski <brgl@bgdev.pl>
Cc:     =?UTF-8?Q?Duje_Mihanovi=C4=87?= <duje.mihanovic@skole.hr>,
        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>,
        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 Tue, Oct 10, 2023 at 7:39=E2=80=AFPM Bartosz Golaszewski <brgl@bgdev.pl>=
 wrote:

> It doesn't seem like anyone is using these GPIOs once they're
> requested? Wouldn't the above definitios be analogous to:
>
> GPIO_HOG("pxa-gpio", SPITZ_GPIO_LED_ORANGE, NULL, GPIO_ACTIVE_HIGH, GPIOD=
_ASIS)
> GPIO_HOG("pxa-gpio", SPITZ_GPIO_LED_GREEN, NULL, GPIO_ACTIVE_HIGH, GPIOD_=
ASIS)

They are used:
+       spitz_gpio_leds[0].gpiod =3D leds->desc[0];
+       spitz_gpio_leds[1].gpiod =3D leds->desc[1];

The descriptors are passed to the leds-gpio driver.

But wait: no.

This whole thing:

+static struct gpio_descs *leds;
+
(...)
+       leds =3D gpiod_get_array_optional(&spitz_led_device.dev,
+                       NULL, GPIOD_ASIS);
+       spitz_gpio_leds[0].gpiod =3D leds->desc[0];
+       spitz_gpio_leds[1].gpiod =3D leds->desc[1];

Just delete all that.

The leds-gpio driver will request and use the lines.

It was just so unorthodox that I missed it. Adding the descriptor
table is enough.

Yours,
Linus Walleij