[src/trunk]: src/sys/dev/usb Add code to setup hardware or software flow cont...

[scw <scw%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b7f45dee2435
branches:  trunk
changeset: 534150:b7f45dee2435
user:      scw <scw%NetBSD.org@localhost>
date:      Thu Jul 18 14:44:10 2002 +0000

description:
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).

diffstat:

 sys/dev/usb/uftdi.c |  24 +++++++++++++++++++++---
 1 files changed, 21 insertions(+), 3 deletions(-)

diffs (52 lines):

diff -r 959c76d336d1 -r b7f45dee2435 sys/dev/usb/uftdi.c
--- a/sys/dev/usb/uftdi.c       Thu Jul 18 13:31:58 2002 +0000
+++ b/sys/dev/usb/uftdi.c       Thu Jul 18 14:44:10 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uftdi.c,v 1.11 2002/07/11 21:14:27 augustss Exp $      */
+/*     $NetBSD: uftdi.c,v 1.12 2002/07/18 14:44:10 scw Exp $   */
 
 /*
  * Copyright (c) 2000 The NetBSD Foundation, Inc.
@@ -46,7 +46,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uftdi.c,v 1.11 2002/07/11 21:14:27 augustss Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uftdi.c,v 1.12 2002/07/18 14:44:10 scw Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -426,7 +426,7 @@
        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));
 
@@ -522,6 +522,24 @@
        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);
 }