diff options
| author | Lars Kanis | 2017-11-28 11:55:17 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2017-11-28 15:32:33 +0100 |
| commit | d8dcbdd08c653d9a6754b3c775f13cb987fa91ec (patch) | |
| tree | f7c4afc1fe43cc9f1520641ac5c5b6e2db656137 | |
| parent | serial: pl011: Drop duplicate loop counter (diff) | |
| download | kernel-qcow2-linux-d8dcbdd08c653d9a6754b3c775f13cb987fa91ec.tar.gz kernel-qcow2-linux-d8dcbdd08c653d9a6754b3c775f13cb987fa91ec.tar.xz kernel-qcow2-linux-d8dcbdd08c653d9a6754b3c775f13cb987fa91ec.zip | |
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>
| -rw-r--r-- | drivers/tty/moxa.c | 17 | ||||
| -rw-r--r-- | drivers/tty/moxa.h | 2 |
2 files changed, 13 insertions, 6 deletions
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c index 68cbc03aab4b..250a19f042d7 100644 --- a/drivers/tty/moxa.c +++ b/drivers/tty/moxa.c @@ -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; diff --git a/drivers/tty/moxa.h b/drivers/tty/moxa.h index 8ce89fd36c7b..563d2dce80b3 100644 --- a/drivers/tty/moxa.h +++ b/drivers/tty/moxa.h @@ -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 |