i2c: rcar: add suspend/resume support (18569fa8) · Commits · 戴 / test

Because the adapter will be set up before every transaction anyhow, we just need to mark it as suspended to the I2C core. Signed-off-by:

drivers/i2c/busses/i2c-rcar.c

+25 −0

Original line number	Diff line number	Diff line
		@@ -1017,10 +1017,35 @@ static int rcar_i2c_remove(struct platform_device *pdev)
		return 0;
		}

		#ifdef CONFIG_PM_SLEEP
		static int rcar_i2c_suspend(struct device *dev)
		{
		struct rcar_i2c_priv *priv = dev_get_drvdata(dev);

		i2c_mark_adapter_suspended(&priv->adap);
		return 0;
		}

		static int rcar_i2c_resume(struct device *dev)
		{
		struct rcar_i2c_priv *priv = dev_get_drvdata(dev);

		i2c_mark_adapter_resumed(&priv->adap);
		return 0;
		}

		static SIMPLE_DEV_PM_OPS(rcar_i2c_pm_ops, rcar_i2c_suspend, rcar_i2c_resume);

		#define DEV_PM_OPS (&rcar_i2c_pm_ops)
		#else
		#define DEV_PM_OPS NULL
		#endif /* CONFIG_PM_SLEEP */

		static struct platform_driver rcar_i2c_driver = {
		.driver = {
		.name = "i2c-rcar",
		.of_match_table = rcar_i2c_dt_ids,
		.pm = DEV_PM_OPS,
		},
		.probe = rcar_i2c_probe,
		.remove = rcar_i2c_remove,