From 18569fa89a4db9ed6b5181624788a1574a9b6ed7 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Wed, 19 Dec 2018 17:48:26 +0100 Subject: i2c: rcar: add suspend/resume support 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: Hiromitsu Yamasaki Signed-off-by: Wolfram Sang Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-rcar.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index 254e6219e538..1d6390eed861 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -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, -- cgit v1.2.3