xHCI: Check host USB2 LPM capability
Check the host's USB2 LPM capability.
USB2 software LPM support is optional for xHCI 0.96 hosts. xHCI 1.0 hosts
should support software LPM, and may support hardware LPM.
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>
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index fa921cb..8673f98 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1459,6 +1459,10 @@
/* Array of pointers to USB 2.0 PORTSC registers */
__le32 __iomem **usb2_ports;
unsigned int num_usb2_ports;
+ /* support xHCI 0.96 spec USB2 software LPM */
+ unsigned sw_lpm_support:1;
+ /* support xHCI 1.0 spec USB2 hardware LPM */
+ unsigned hw_lpm_support:1;
};
/* convert between an HCD pointer and the corresponding EHCI_HCD */