Signed-off-by: Wenyou Yang <wenyou.y...@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroc...@atmel.com>
---
drivers/i2c/busses/i2c-at91.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index 1b43b08..8f8fd2a 100644
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -861,7 +861,32 @@ static int at91_twi_runtime_resume(struct device *dev)
return clk_prepare_enable(twi_dev->clk);
}
+static int at91_twi_suspend(struct device *dev)
+{
+ if (!pm_runtime_suspended(dev))
+ at91_twi_runtime_suspend(dev);
+
+ return 0;
+}
+
+static int at91_twi_resume(struct device *dev)
+{
+ int ret;
+
+ if (!pm_runtime_suspended(dev)) {
+ ret = at91_twi_runtime_resume(dev);
+ if (ret)
+ return ret;
+ }
+
+ pm_runtime_mark_last_busy(dev);
+ pm_request_autosuspend(dev);
+
+ return 0;
+}
+
static const struct dev_pm_ops at91_twi_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(at91_twi_suspend, at91_twi_resume)
SET_RUNTIME_PM_OPS(at91_twi_runtime_suspend,
at91_twi_runtime_resume, NULL)
};
--
1.7.9.5
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