diff options
| -rw-r--r-- | drivers/usb/host/xhci-hub.c | 66 |
1 files changed, 45 insertions, 21 deletions
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 3bddeaa1e2d7..04344c14180c 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -540,6 +540,49 @@ static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array) return max_ports; } +static __le32 __iomem *xhci_get_port_io_addr(struct usb_hcd *hcd, int index) +{ + __le32 __iomem **port_array; + + xhci_get_ports(hcd, &port_array); + return port_array[index]; +} + +/* + * xhci_set_port_power() must be called with xhci->lock held. + * It will release and re-aquire the lock while calling ACPI + * method. + */ +static void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd, + u16 index, bool on) +{ + __le32 __iomem *addr; + u32 temp; + unsigned long flags = 0; + + addr = xhci_get_port_io_addr(hcd, index); + temp = readl(addr); + temp = xhci_port_state_to_neutral(temp); + if (on) { + /* Power on */ + writel(temp | PORT_POWER, addr); + temp = readl(addr); + xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n", + index, temp); + } else { + /* Power off */ + writel(temp & ~PORT_POWER, addr); + } + + spin_unlock_irqrestore(&xhci->lock, flags); + temp = usb_acpi_power_manageable(hcd->self.root_hub, + index); + if (temp) + usb_acpi_set_power_state(hcd->self.root_hub, + index, on); + spin_lock_irqsave(&xhci->lock, flags); +} + void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array, int port_id, u32 link_state) { @@ -1092,18 +1135,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, * However, hub_wq will ignore the roothub events until * the roothub is registered. */ - writel(temp | PORT_POWER, port_array[wIndex]); - - temp = readl(port_array[wIndex]); - xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n", wIndex, temp); - - spin_unlock_irqrestore(&xhci->lock, flags); - temp = usb_acpi_power_manageable(hcd->self.root_hub, - wIndex); - if (temp) - usb_acpi_set_power_state(hcd->self.root_hub, - wIndex, true); - spin_lock_irqsave(&xhci->lock, flags); + xhci_set_port_power(xhci, hcd, wIndex, true); break; case USB_PORT_FEAT_RESET: temp = (temp | PORT_RESET); @@ -1207,15 +1239,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, port_array[wIndex], temp); break; case USB_PORT_FEAT_POWER: - writel(temp & ~PORT_POWER, port_array[wIndex]); - - spin_unlock_irqrestore(&xhci->lock, flags); - temp = usb_acpi_power_manageable(hcd->self.root_hub, - wIndex); - if (temp) - usb_acpi_set_power_state(hcd->self.root_hub, - wIndex, false); - spin_lock_irqsave(&xhci->lock, flags); + xhci_set_port_power(xhci, hcd, wIndex, false); break; default: goto error; |