The USB signal can be system wakeup source, this patch add the
support, for how to enable it, see Documentation/usb/chipidea.txt.
Since USB wakeup enable logic is vendor/platform specific, the
glue layer needs to implement it to support this feature.
Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
---
drivers/usb/chipidea/core.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 63d2b39..6d9dc2d 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -808,6 +808,8 @@ static int ci_hdrc_probe(struct platform_device *pdev)
if (ci_otg_is_fsm_mode(ci))
ci_hdrc_otg_fsm_start(ci);
+ device_set_wakeup_capable(&pdev->dev, true);
+
ret = dbg_create_files(ci);
if (!ret)
return 0;
@@ -898,6 +900,11 @@ static int ci_suspend(struct device *dev)
return 0;
}
+ if (device_may_wakeup(dev)) {
+ usb_phy_set_wakeup(ci->usb_phy, true);
+ enable_irq_wake(ci->irq);
+ }
+
ci_controller_suspend(ci);
return 0;
@@ -908,6 +915,9 @@ static int ci_resume(struct device *dev)
struct ci_hdrc *ci = dev_get_drvdata(dev);
int ret;
+ if (device_may_wakeup(dev))
+ disable_irq_wake(ci->irq);
+
ret = ci_controller_resume(dev);
if (ret)
return ret;
--
1.9.1
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