From fa49780ea82c09c73f6f69b13542101d42845506 Mon Sep 17 00:00:00 2001 From: Nathan Binkert Date: Mon, 29 Jul 2002 03:01:49 +0000 Subject: Update from NetBSD. Log message: Add code to setup hardware or software flow control (or none at all, if necessary) depending on the user-specified termios flags. This allows the device to talk to DCEs which don't assert RTS (i.e. dumb, 3-wire serial ports). --- sys/dev/usb/uftdi.c | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) (limited to 'sys/dev/usb/uftdi.c') diff --git a/sys/dev/usb/uftdi.c b/sys/dev/usb/uftdi.c index f02d9ec0f20..027e63ac443 100644 --- a/sys/dev/usb/uftdi.c +++ b/sys/dev/usb/uftdi.c @@ -1,5 +1,5 @@ -/* $OpenBSD: uftdi.c,v 1.8 2002/07/25 02:18:10 nate Exp $ */ -/* $NetBSD: uftdi.c,v 1.10 2002/05/08 18:10:19 scw Exp $ */ +/* $OpenBSD: uftdi.c,v 1.9 2002/07/29 03:01:48 nate Exp $ */ +/* $NetBSD: uftdi.c,v 1.12 2002/07/18 14:44:10 scw Exp $ */ /* * Copyright (c) 2000 The NetBSD Foundation, Inc. @@ -425,7 +425,7 @@ uftdi_param(void *vsc, int portno, struct termios *t) struct uftdi_softc *sc = vsc; usb_device_request_t req; usbd_status err; - int rate, data; + int rate, data, flow; DPRINTF(("uftdi_param: sc=%p\n", sc)); @@ -521,6 +521,24 @@ uftdi_param(void *vsc, int portno, struct termios *t) if (err) return (EIO); + if (ISSET(t->c_cflag, CRTSCTS)) { + flow = FTDI_SIO_RTS_CTS_HS; + USETW(req.wValue, 0); + } else if (ISSET(t->c_iflag, IXON|IXOFF)) { + flow = FTDI_SIO_XON_XOFF_HS; + USETW2(req.wValue, t->c_cc[VSTOP], t->c_cc[VSTART]); + } else { + flow = FTDI_SIO_DISABLE_FLOW_CTRL; + USETW(req.wValue, 0); + } + req.bmRequestType = UT_WRITE_VENDOR_DEVICE; + req.bRequest = FTDI_SIO_SET_FLOW_CTRL; + USETW2(req.wIndex, flow, portno); + USETW(req.wLength, 0); + err = usbd_do_request(sc->sc_udev, &req, NULL); + if (err) + return (EIO); + return (0); } -- cgit v1.2.3