From dbe0dbb7dfda52140d3469d7035a08dfa874fca2 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Sun, 10 Feb 2008 12:24:00 -0800 Subject: USB: defines for USB "Link Power Management" (LPM) ECN There's a new PM-related change notice for the USB 2.0 specification called "Link Power Management" (LPM). It defines a new "L1 Suspend" state which resembles the current (L2) suspend state, except that it can be entered and exited much more quickly. It should thus be more useful for runtime PM, even though it doesn't mandate reduced power draw from VBUS. This patch provides the relevant #defines for usbcore. Actually implementing these mechanisms requires host silicon that can generate new USB packets, plus hubs handling some new requests and peripherals which understand the new packets. Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/usb/core/hub.h') diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index 1551aed65e05..d672cd81a3e4 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -41,9 +41,10 @@ */ #define USB_PORT_FEAT_CONNECTION 0 #define USB_PORT_FEAT_ENABLE 1 -#define USB_PORT_FEAT_SUSPEND 2 +#define USB_PORT_FEAT_SUSPEND 2 /* L2 suspend */ #define USB_PORT_FEAT_OVER_CURRENT 3 #define USB_PORT_FEAT_RESET 4 +#define USB_PORT_FEAT_L1 5 /* L1 suspend */ #define USB_PORT_FEAT_POWER 8 #define USB_PORT_FEAT_LOWSPEED 9 #define USB_PORT_FEAT_HIGHSPEED 10 @@ -54,6 +55,7 @@ #define USB_PORT_FEAT_C_RESET 20 #define USB_PORT_FEAT_TEST 21 #define USB_PORT_FEAT_INDICATOR 22 +#define USB_PORT_FEAT_C_PORT_L1 23 /* * Hub Status and Hub Change results @@ -73,7 +75,8 @@ struct usb_port_status { #define USB_PORT_STAT_SUSPEND 0x0004 #define USB_PORT_STAT_OVERCURRENT 0x0008 #define USB_PORT_STAT_RESET 0x0010 -/* bits 5 to 7 are reserved */ +#define USB_PORT_STAT_L1 0x0020 +/* bits 6 to 7 are reserved */ #define USB_PORT_STAT_POWER 0x0100 #define USB_PORT_STAT_LOW_SPEED 0x0200 #define USB_PORT_STAT_HIGH_SPEED 0x0400 @@ -91,6 +94,7 @@ struct usb_port_status { #define USB_PORT_STAT_C_SUSPEND 0x0004 #define USB_PORT_STAT_C_OVERCURRENT 0x0008 #define USB_PORT_STAT_C_RESET 0x0010 +#define USB_PORT_STAT_C_L1 0x0020 /* * wHubCharacteristics (masks) -- cgit v1.2.3 From fc721f5194dc98c8108fb155a4fbae1cd746cf41 Mon Sep 17 00:00:00 2001 From: Inaky Perez-Gonzalez Date: Tue, 8 Apr 2008 13:24:46 -0700 Subject: wusb: make ep0_reinit available for modules We need to be able to call ep0_reinit() [renamed to usb_ep0_reinit()] from the WUSB security code. The reason is that when we authenticate the device, it's address changes (from having bit 7 set to having it cleared). Thus, we need to signal the USB stack to reinitialize EP0, so the status with the previous address kept at the HCD layer is cleared and properly reinitialized. Signed-off-by: Inaky Perez-Gonzalez Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb/core/hub.h') diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index d672cd81a3e4..2a116ce53c9b 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -195,5 +195,6 @@ struct usb_tt_clear { }; extern void usb_hub_tt_clear_buffer(struct usb_device *dev, int pipe); +extern void usb_ep0_reinit(struct usb_device *); #endif /* __LINUX_HUB_H */ -- cgit v1.2.3