tty: moxa: Add support for CMSPAR (d8dcbdd0) · Commits · 戴 / test

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:

Lars Kanis <kanis@comcard.de> Signed-off-by:

Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/moxa.c

+11 −6

Original line number	Diff line number	Diff line
		@@ -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)
		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;

drivers/tty/moxa.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -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

Admin message