From 65580b4321eb36f16ae8b5987bfa1bb948fc5112 Mon Sep 17 00:00:00 2001 From: Andiry Xu Date: Fri, 23 Sep 2011 14:19:52 -0700 Subject: xHCI: set USB2 hardware LPM If the device pass the USB2 software LPM and the host supports hardware LPM, enable hardware LPM for the device to let the host decide when to put the link into lower power state. If hardware LPM is enabled for a port and driver wants to put it into suspend, it must first disable hardware LPM, resume the port into U0, and then suspend the port. Signed-off-by: Andiry Xu Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux/usb.h') diff --git a/include/linux/usb.h b/include/linux/usb.h index 1d00d9bc5d65..6f49a1b39fa6 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -411,6 +411,8 @@ struct usb_tt; * @authenticated: Crypto authentication passed * @wusb: device is Wireless USB * @lpm_capable: device supports LPM + * @usb2_hw_lpm_capable: device can perform USB2 hardware LPM + * @usb2_hw_lpm_enabled: USB2 hardware LPM enabled * @string_langid: language ID for strings * @product: iProduct string, if present (static) * @manufacturer: iManufacturer string, if present (static) @@ -474,6 +476,8 @@ struct usb_device { unsigned authenticated:1; unsigned wusb:1; unsigned lpm_capable:1; + unsigned usb2_hw_lpm_capable:1; + unsigned usb2_hw_lpm_enabled:1; int string_langid; /* static strings from the device */ -- cgit v1.2.3