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usb: hub: remote wakeup support.

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This patch makes the usb hub handle remote wakeup requests from devices
properly by updating the port status register and forwarding the wakeup
to the upstream port.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2010-12-15 12:26:59 +01:00
parent 9159f6798e
commit 34239c7bc9
1 changed files with 12 additions and 0 deletions
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12
hw/usb-hub.c
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@ -245,6 +245,17 @@ static void usb_hub_detach(USBPort *port1)
}
}
static void usb_hub_wakeup(USBDevice *dev)
{
USBHubState *s = dev->port->opaque;
USBHubPort *port = &s->ports[dev->port->index];
if (port->wPortStatus & PORT_STAT_SUSPEND) {
port->wPortChange |= PORT_STAT_C_SUSPEND;
usb_wakeup(&s->dev);
}
}
static void usb_hub_handle_reset(USBDevice *dev)
{
/* XXX: do it */
@ -502,6 +513,7 @@ static void usb_hub_handle_destroy(USBDevice *dev)
static USBPortOps usb_hub_port_ops = {
.attach = usb_hub_attach,
.detach = usb_hub_detach,
.wakeup = usb_hub_wakeup,
};
static int usb_hub_initfn(USBDevice *dev)