[PATCH 2/2] i2c: tegra: Add SMBus block read and SMBus alert functions

[Dmitry Osipenko]

09.12.2021 18:05, Akhil R пишет:
> +static int tegra_i2c_setup_smbalert(struct tegra_i2c_dev *i2c_dev)
> +{
> +	struct tegra_i2c_smbalert *smbalert = &i2c_dev->smbalert;
> +	struct gpio_desc *alert_gpiod;
> +	struct i2c_client *ara;
> +
> +	alert_gpiod = devm_gpiod_get(i2c_dev->dev, "smbalert", GPIOD_IN);
> +	if (IS_ERR(alert_gpiod))
> +		return PTR_ERR(alert_gpiod);
> +
> +	smbalert->alert_data.irq = gpiod_to_irq(alert_gpiod);
> +	if (smbalert->alert_data.irq <= 0)
> +		return smbalert->alert_data.irq;

Why GPIO is needed at all if what's actually needed is the interrupt?