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| author | Andiry Xu <andiry.xu@amd.com> | 2010-10-14 07:23:03 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-22 10:22:13 -0700 |
| commit | 9777e3ce907d4cb5a513902a87ecd03b52499569 (patch) | |
| tree | a2b28eeeaddd39d7c8cdd59f6ddbfa694d40d5ba /drivers/usb/host/xhci.h | |
| parent | 561925318725a41189a69f36ebe99199b3fb84c4 (diff) | |
| download | linux-9777e3ce907d4cb5a513902a87ecd03b52499569.tar.gz linux-9777e3ce907d4cb5a513902a87ecd03b52499569.tar.bz2 linux-9777e3ce907d4cb5a513902a87ecd03b52499569.zip | |
USB: xHCI: bus power management implementation
This patch implements xHCI bus suspend/resume function hook.
In the patch it goes through all the ports and suspend/resume
the ports if needed.
If any port is in remote wakeup, abort bus suspend as what ehci/ohci do.
Signed-off-by: Libin Yang <libin.yang@amd.com>
Signed-off-by: Crane Cai <crane.cai@amd.com>
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index ca4a923dc810..196e21fb36ff 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -357,6 +357,8 @@ struct xhci_op_regs { #define PORT_U2_TIMEOUT(p) (((p) & 0xff) << 8) /* Bits 24:31 for port testing */ +/* USB2 Protocol PORTSPMSC */ +#define PORT_RWE (1 << 0x3) /** * struct xhci_intr_reg - Interrupt Register Set @@ -1191,6 +1193,11 @@ struct xhci_hcd { #endif /* Host controller watchdog timer structures */ unsigned int xhc_state; + + unsigned long bus_suspended; + unsigned long next_statechange; + + u32 command; /* Host controller is dying - not responding to commands. "I'm not dead yet!" * * xHC interrupts have been disabled and a watchdog timer will (or has already) @@ -1460,6 +1467,8 @@ void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id, int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength); int xhci_hub_status_data(struct usb_hcd *hcd, char *buf); +int xhci_bus_suspend(struct usb_hcd *hcd); +int xhci_bus_resume(struct usb_hcd *hcd); u32 xhci_port_state_to_neutral(u32 state); int xhci_find_slot_id_by_port(struct xhci_hcd *xhci, u16 port); void xhci_ring_device(struct xhci_hcd *xhci, int slot_id); |