Author: wmb Date: 2010-01-26 04:15:32 +0100 (Tue, 26 Jan 2010) New Revision: 1700
Modified: cpu/x86/pc/olpc/via/usb.fth Log: OLPC trac 10003 - added extra delay on S3 resume when USB devices are attached.
Modified: cpu/x86/pc/olpc/via/usb.fth =================================================================== --- cpu/x86/pc/olpc/via/usb.fth 2010-01-25 09:40:13 UTC (rev 1699) +++ cpu/x86/pc/olpc/via/usb.fth 2010-01-26 03:15:32 UTC (rev 1700) @@ -92,8 +92,20 @@ : suspend-usb ( -- ) detach-usb-keyboard ; +: has-children? ( devspec$ -- flag ) + locate-device if false else child 0<> then +; +: any-usb-devices? ( -- flag ) + " /usb" has-children? if true exit then + " /usb@10,2" has-children? if true exit then + " /usb@10,1" has-children? if true exit then + " /usb@10,0" has-children? if true exit then + false +; : resume-usb ( -- ) - d# 300 ms \ USB misses devices if you probe too soon + any-usb-devices? if + d# 2000 ms \ USB misses devices if you probe too soon + then silent-probe-usb attach-usb-keyboard ;