Set a flag on OTG charger event and check it on cable
remove event (i.e. USB_EVENT_NONE). This way we will
not need to power up the PHY when an external charger
is detected by the transceiver itself.
Signed-off-by: Dima Zavin <dima@xxxxxxxxxxx>
---
drivers/usb/musb/musb_core.h | 1 +
drivers/usb/musb/omap2430.c | 12 ++++++++++++
2 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index 0e053b5..f65269d 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -497,6 +497,7 @@ struct musb {
struct usb_gadget g; /* the gadget */
struct usb_gadget_driver *gadget_driver; /* its driver */
#endif
+ bool is_ac_charger:1;
/*
* FIXME: Remove this flag.
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index c5d4c44..ac4cfbc 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -257,6 +257,11 @@ static int musb_otg_notifications(struct notifier_block *nb,
}
break;
+ case USB_EVENT_CHARGER:
+ dev_dbg(musb->controller, "Dedicated charger connect\n");
+ musb->is_ac_charger = true;
+ break;
+
case USB_EVENT_VBUS:
dev_dbg(musb->controller, "VBUS Connect\n");
@@ -268,6 +273,13 @@ static int musb_otg_notifications(struct notifier_block *nb,
break;
case USB_EVENT_NONE:
+ if (musb->is_ac_charger) {
+ dev_dbg(musb->controller,
+ "Dedicated charger disconnect\n");
+ musb->is_ac_charger = false;
+ break;
+ }
+
dev_dbg(musb->controller, "VBUS Disconnect\n");
#ifdef CONFIG_USB_GADGET_MUSB_HDRC
--
1.7.3.1
--
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