If the rt5514 Wake on Voice device is opened while suspended, it will
be able to wake up the system when a voice command is detected.
This patch also supports user-space policy to override wakeup behavior
by /sys/bus/spi/drivers/rt5514/spi2.0/power/wakeup.
Signed-off-by: Chinyue Chen <chinyue@xxxxxxxxxxxx>
Signed-off-by: Oder Chiou <oder_chiou@xxxxxxxxxxx>
---
sound/soc/codecs/rt5514-spi.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c
index b90d6d5..0c0e209 100644
--- a/sound/soc/codecs/rt5514-spi.c
+++ b/sound/soc/codecs/rt5514-spi.c
@@ -448,9 +448,35 @@ static int rt5514_spi_probe(struct spi_device *spi)
return ret;
}
+ device_init_wakeup(&spi->dev, true);
+
+ return 0;
+}
+
+static int rt5514_suspend(struct device *dev)
+{
+ int irq = to_spi_device(dev)->irq;
+
+ if (device_may_wakeup(dev))
+ enable_irq_wake(irq);
+
return 0;
}
+static int rt5514_resume(struct device *dev)
+{
+ int irq = to_spi_device(dev)->irq;
+
+ if (device_may_wakeup(dev))
+ disable_irq_wake(irq);
+
+ return 0;
+}
+
+static const struct dev_pm_ops rt5514_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(rt5514_suspend, rt5514_resume)
+};
+
static const struct of_device_id rt5514_of_match[] = {
{ .compatible = "realtek,rt5514", },
{},
@@ -460,6 +486,7 @@ MODULE_DEVICE_TABLE(of, rt5514_of_match);
static struct spi_driver rt5514_spi_driver = {
.driver = {
.name = "rt5514",
+ .pm = &rt5514_pm_ops,
.of_match_table = of_match_ptr(rt5514_of_match),
},
.probe = rt5514_spi_probe,
--
2.7.4
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