Date: Thu, 11 Mar 2010 21:49:01 +0000 (UTC) From: Andrew Thompson <thompsa@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r205034 - head/sys/dev/usb/controller Message-ID: <201003112149.o2BLn1on063121@svn.freebsd.org>
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Author: thompsa Date: Thu Mar 11 21:49:00 2010 New Revision: 205034 URL: http://svn.freebsd.org/changeset/base/205034 Log: For USS820 driver we need to manually reset TX FIFO at each SETUP transaction because the chip doesn't do this by itself. Submitted by: Hans Petter Selasky Modified: head/sys/dev/usb/controller/uss820dci.c Modified: head/sys/dev/usb/controller/uss820dci.c ============================================================================== --- head/sys/dev/usb/controller/uss820dci.c Thu Mar 11 21:48:10 2010 (r205033) +++ head/sys/dev/usb/controller/uss820dci.c Thu Mar 11 21:49:00 2010 (r205034) @@ -333,6 +333,14 @@ uss820dci_setup_rx(struct uss820dci_td * } else { sc->sc_dv_addr = 0xFF; } + + /* reset TX FIFO */ + temp = USS820_READ_1(sc, USS820_TXCON); + temp |= USS820_TXCON_TXCLR; + USS820_WRITE_1(sc, USS820_TXCON, temp); + temp &= ~USS820_TXCON_TXCLR; + USS820_WRITE_1(sc, USS820_TXCON, temp); + return (0); /* complete */ setup_not_complete:
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