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: Lars Kanis <kanis@comcard.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1487,8 +1487,6 @@ static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_term
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if (ts->c_iflag & IXANY)
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xany = 1;
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/* Clear the features we don't support */
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ts->c_cflag &= ~CMSPAR;
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MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany);
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baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty));
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if (baud == -1)
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@ -1781,10 +1779,17 @@ static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio,
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mode |= MX_STOP1;
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if (termio->c_cflag & PARENB) {
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if (termio->c_cflag & PARODD)
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mode |= MX_PARODD;
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else
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mode |= MX_PAREVEN;
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if (termio->c_cflag & PARODD) {
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if (termio->c_cflag & CMSPAR)
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mode |= MX_PARMARK;
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else
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mode |= MX_PARODD;
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} else {
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if (termio->c_cflag & CMSPAR)
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mode |= MX_PARSPACE;
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else
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mode |= MX_PAREVEN;
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}
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} else
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mode |= MX_PARNONE;
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@ -301,5 +301,7 @@
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#define MX_PARNONE 0x00
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#define MX_PAREVEN 0x40
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#define MX_PARODD 0xC0
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#define MX_PARMARK 0xA0
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#define MX_PARSPACE 0x20
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#endif
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