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 --- 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,