[PATCH 10/10] i2c: rcar: add suspend/resume support
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: 2018-12-19 16:48:59
Also in:
linux-i2c, linux-pm, linux-renesas-soc, lkml
Subsystem:
i2c subsystem, i2c subsystem host drivers, renesas r-car i2c drivers, the rest · Maintainers:
Andi Shyti, Wolfram Sang, Linus Torvalds
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 <redacted> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> --- 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,
--
2.11.0
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