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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>
This commit is contained in:
oder_chiou@realtek.com 2017-11-08 15:04:21 +08:00 committed by Mark Brown
parent c4a71ff78e
commit 58f1c07d23
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GPG Key ID: 24D68B725D5487D0
1 changed files with 27 additions and 0 deletions
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27
sound/soc/codecs/rt5514-spi.c
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@ -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,