xhci: Add infrastructure for host-specific LPM policies.

[uclinux-h8/linux.git] / drivers / usb / host / xhci.h

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index f5cb741..d55b367 100644 (file)
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -916,6 +916,8 @@ struct xhci_virt_device {
        u8                              real_port;
        struct xhci_interval_bw_table   *bw_table;
        struct xhci_tt_bw_info          *tt_info;
+       /* The current max exit latency for the enabled USB3 link states. */
+       u16                             current_mel;
 };
 
 /*
@@ -1486,6 +1488,7 @@ struct xhci_hcd {
 #define        XHCI_SW_BW_CHECKING     (1 << 8)
 #define XHCI_AMD_0x96_HOST     (1 << 9)
 #define XHCI_TRUST_TX_LENGTH   (1 << 10)
+#define XHCI_LPM_SUPPORT       (1 << 11)
        unsigned int            num_active_eps;
        unsigned int            limit_active_eps;
        /* There are two roothubs to keep track of bus suspend info for */
@@ -1783,6 +1786,10 @@ void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id,
 /* xHCI roothub code */
 void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array,
                                int port_id, u32 link_state);
+int xhci_enable_usb3_lpm_timeout(struct usb_hcd *hcd,
+                       struct usb_device *udev, enum usb3_link_state state);
+int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd,
+                       struct usb_device *udev, enum usb3_link_state state);
 void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array,
                                int port_id, u32 port_bit);
 int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,