Re: [Linaro-mm-sig] [PATCH 2/2] i2c: tegra: Add SMBus block read and SMBus alert functions

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?