Date: Thu, 26 Jun 2008 08:58:37 GMT From: Andrew Turner <andrew@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 144132 for review Message-ID: <200806260858.m5Q8wbmb067819@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
http://perforce.freebsd.org/chv.cgi?CH=144132 Change 144132 by andrew@andrew_bender on 2008/06/26 08:58:02 Implement the transmit side of uart's uart_ipend and uart_transmit With this (and some other workarounds) I'm able to get init writing out to the uart on the NEO 1973 emulator Affected files ... .. //depot/projects/arm/src/sys/arm/s3c2xx0/uart_dev_s3c2410.c#4 edit Differences ... ==== //depot/projects/arm/src/sys/arm/s3c2xx0/uart_dev_s3c2410.c#4 (text+ko) ==== @@ -190,6 +190,11 @@ static int s3c2410_bus_transmit(struct uart_softc *sc) { + sc->sc_txbusy = 1; + for (int i = 0; i < sc->sc_txdatasz; i++) { + s3c2410_putc(&sc->sc_bas, sc->sc_txbuf[i]); + uart_barrier(&sc->sc_bas); + } return (0); } @@ -214,7 +219,16 @@ static int s3c2410_bus_ipend(struct uart_softc *sc) { - return (0); + int ipend = 0; + int sr; + + sr = uart_getreg(&sc->sc_bas, SSCOM_UTRSTAT); + + if (sr & UTRSTAT_TXEMPTY && sc->sc_txbusy) { + ipend |= SER_INT_TXIDLE; + } + + return (ipend); } static int s3c2410_bus_flush(struct uart_softc *sc, int what)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200806260858.m5Q8wbmb067819>