diff options
| -rw-r--r-- | drivers/usb/otg/twl4030-usb.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index e01b073cc489..efeb4d1517ff 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -160,6 +160,7 @@ struct twl4030_usb { int irq; u8 linkstat; + bool vbus_supplied; u8 asleep; bool irq_enabled; }; @@ -250,6 +251,8 @@ static enum usb_xceiv_events twl4030_usb_linkstat(struct twl4030_usb *twl) int status; int linkstat = USB_EVENT_NONE; + twl->vbus_supplied = false; + /* * For ID/VBUS sensing, see manual section 15.4.8 ... * except when using only battery backup power, two @@ -265,6 +268,9 @@ static enum usb_xceiv_events twl4030_usb_linkstat(struct twl4030_usb *twl) if (status < 0) dev_err(twl->dev, "USB link status err %d\n", status); else if (status & (BIT(7) | BIT(2))) { + if (status & (BIT(7))) + twl->vbus_supplied = true; + if (status & BIT(2)) linkstat = USB_EVENT_ID; else @@ -484,7 +490,7 @@ static ssize_t twl4030_usb_vbus_show(struct device *dev, spin_lock_irqsave(&twl->lock, flags); ret = sprintf(buf, "%s\n", - (twl->linkstat == USB_EVENT_VBUS) ? "on" : "off"); + twl->vbus_supplied ? "on" : "off"); spin_unlock_irqrestore(&twl->lock, flags); return ret; @@ -608,6 +614,7 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) twl->otg.set_peripheral = twl4030_set_peripheral; twl->otg.set_suspend = twl4030_set_suspend; twl->usb_mode = pdata->usb_mode; + twl->vbus_supplied = false; twl->asleep = 1; /* init spinlock for workqueue */ |