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authoroder_chiou@realtek.com <oder_chiou@realtek.com>2017-11-08 15:04:21 +0800
committerMark Brown <broonie@kernel.org>2017-11-08 21:29:05 +0000
commit58f1c07d23cddbc4c8aa99a214934eb7d33e8523 (patch)
tree0f5852e326cc2af1e2b17dd25969529ce3ec9528 /sound
parentc4a71ff78e668a75a4a3cfd9ebbfbd5cbe8da5fb (diff)
downloadlinux-58f1c07d23cddbc4c8aa99a214934eb7d33e8523.tar.bz2
ASoC: rt5514: Voice wakeup support.
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@chromium.org> Signed-off-by: Oder Chiou <oder_chiou@realtek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/rt5514-spi.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c
index 0896817ffc3f..d03756913dd9 100644
--- a/sound/soc/codecs/rt5514-spi.c
+++ b/sound/soc/codecs/rt5514-spi.c
@@ -456,9 +456,35 @@ 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", },
{},
@@ -468,6 +494,7 @@ 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,