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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 <hiromitsu.yamasaki.ym@renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2018-12-19 17:48:26 +01:00 committed by Wolfram Sang
parent 2088716f90
commit 18569fa89a
1 changed files with 25 additions and 0 deletions
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25
drivers/i2c/busses/i2c-rcar.c
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@ -1017,10 +1017,35 @@ static int rcar_i2c_remove(struct platform_device *pdev)
return 0; 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 = { static struct platform_driver rcar_i2c_driver = {
.driver = { .driver = {
.name = "i2c-rcar", .name = "i2c-rcar",
.of_match_table = rcar_i2c_dt_ids, .of_match_table = rcar_i2c_dt_ids,
.pm = DEV_PM_OPS,
}, },
.probe = rcar_i2c_probe, .probe = rcar_i2c_probe,
.remove = rcar_i2c_remove, .remove = rcar_i2c_remove,