linux-kernel - Re: [PATCH] leds: leds-dual-gpio: Add dual GPIO LEDs driver

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Message-ID: <20210311180225.GA11650@duo.ucw.cz>
Date:   Thu, 11 Mar 2021 19:02:25 +0100
From:   Pavel Machek <pavel@....cz>
To:     Hermes Zhang <chenhui.zhang@...s.com>
Cc:     Dan Murphy <dmurphy@...com>, kernel@...s.com,
        Hermes Zhang <chenhuiz@...s.com>, linux-kernel@...r.kernel.org,
        linux-leds@...r.kernel.org
Subject: Re: [PATCH] leds: leds-dual-gpio: Add dual GPIO LEDs driver

Hi!

> +	priv = devm_kzalloc(dev, sizeof(struct gpio_dual_leds_priv), GFP_KERNEL);
> +	if (!priv)
> +		return -ENOMEM;
> +
> +	priv->low_gpio = devm_gpiod_get(dev, "low", GPIOD_OUT_LOW);
> +	ret = PTR_ERR_OR_ZERO(priv->low_gpio);
> +	if (ret) {
> +		dev_err(dev, "cannot get low-gpios %d\n", ret);
> +		return ret;
> +	}
> +
> +	priv->high_gpio = devm_gpiod_get(dev, "high", GPIOD_OUT_LOW);
> +	ret = PTR_ERR_OR_ZERO(priv->high_gpio);
> +	if (ret) {
> +		dev_err(dev, "cannot get high-gpios %d\n", ret);
> +		return ret;
> +	}

Actually... I'd call it led-0 and led-1 or something. Someone may/will
come with 4-bit GPIO LED one day, and it would be cool if this could
be used with minimal effort.

Calling it multi_led in the driver/bindings would bnot be bad, either.

Best regards,
								Pavel
-- 
http://www.livejournal.com/~pavelmachek

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