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usb: Fix handover of full-speed devices from ehci to companion

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When after a reset the port status connection bit is still set and the enable
bit is not then we're dealing with a full-speed device and should hand it over
to the companion controller.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Hans de Goede 2015-05-10 14:10:13 +02:00 committed by Simon Glass
parent 4588d61a28
commit 71b945267d
1 changed files with 13 additions and 3 deletions
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16
drivers/usb/host/ehci-hcd.c
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@ -897,11 +897,21 @@ static int ehci_submit_root(struct usb_device *dev, unsigned long pipe,
*/
ret = handshake(status_reg, EHCI_PS_PR, 0,
2 * 1000);
if (!ret)
ctrl->portreset |= 1 << port;
else
if (!ret) {
reg = ehci_readl(status_reg);
if ((reg & (EHCI_PS_PE | EHCI_PS_CS))
== EHCI_PS_CS && !ehci_is_TDI()) {
debug("port %d full speed --> companion\n", port - 1);
reg &= ~EHCI_PS_CLEAR;
reg |= EHCI_PS_PO;
ehci_writel(status_reg, reg);
} else {
ctrl->portreset |= 1 << port;
}
} else {
printf("port(%d) reset error\n",
port - 1);
}
}
break;
case USB_PORT_FEAT_TEST: