diff options
| author |   Andiry Xu <andiry.xu@amd.com> | 2010-10-14 07:23:00 -0700 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-22 10:22:13 -0700 |
| commit | 561925318725a41189a69f36ebe99199b3fb84c4 (patch) | |
| tree | e84c72692f8fd9ed67c298db17d26ccb9970a7a8 /drivers/usb/host/xhci.h | |
| parent | USB: xHCI: port power management implementation (diff) | |
| download | linux-dev-561925318725a41189a69f36ebe99199b3fb84c4.tar.xz linux-dev-561925318725a41189a69f36ebe99199b3fb84c4.zip | |
USB: xHCI: port remote wakeup implementation
This commit implements port remote wakeup.
When a port is in U3 state and resume signaling is detected from a device,
the port transitions to the Resume state, and the xHC generates a Port Status
Change Event.
For USB3 port, software write a '0' to the PLS field to complete the resume
signaling. For USB2 port, the resume should be signaling for at least 20ms,
irq handler set a timer for port remote wakeup, and then finishes process in
hub_control GetPortStatus.
Some codes are borrowed from EHCI code.
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 '')
| -rw-r--r-- | drivers/usb/host/xhci.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 73e5db3e89c9..ca4a923dc810 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1215,6 +1215,7 @@ struct xhci_hcd { u32 port_c_suspend[8]; /* port suspend change*/ u32 suspended_ports[8]; /* which ports are suspended */ + unsigned long resume_done[MAX_HC_PORTS]; }; /* For testing purposes */ @@ -1459,6 +1460,9 @@ 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); +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); /* xHCI contexts */ struct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); |