Commit d8dcbdd0 authored by Lars Kanis's avatar Lars Kanis Committed by Greg Kroah-Hartman

tty: moxa: Add support for CMSPAR

The mode constants are taken from the GPL-2.0+ driver available
in the driver section of the Moxa homepage.

It is tested on a C320Turbo PCI card per logic analyzer and
per a device which requires 9 bit character communication.

The vendors driver supports CMSPAR unconditionally, so that all
other available firmware versions seems to support mark/space
parity modes as well.
Signed-off-by: default avatarLars Kanis <kanis@comcard.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e73be92d
......@@ -1487,8 +1487,6 @@ static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_term
if (ts->c_iflag & IXANY)
xany = 1;
/* Clear the features we don't support */
ts->c_cflag &= ~CMSPAR;
MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany);
baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty));
if (baud == -1)
......@@ -1781,10 +1779,17 @@ static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio,
mode |= MX_STOP1;
if (termio->c_cflag & PARENB) {
if (termio->c_cflag & PARODD)
mode |= MX_PARODD;
else
mode |= MX_PAREVEN;
if (termio->c_cflag & PARODD) {
if (termio->c_cflag & CMSPAR)
mode |= MX_PARMARK;
else
mode |= MX_PARODD;
} else {
if (termio->c_cflag & CMSPAR)
mode |= MX_PARSPACE;
else
mode |= MX_PAREVEN;
}
} else
mode |= MX_PARNONE;
......
......@@ -301,5 +301,7 @@
#define MX_PARNONE 0x00
#define MX_PAREVEN 0x40
#define MX_PARODD 0xC0
#define MX_PARMARK 0xA0
#define MX_PARSPACE 0x20
#endif
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