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authorRoland Koebler <r.koebler@yahoo.de>2011-11-09 22:37:08 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2011-11-15 04:46:06 +0400
commit4b6181caa411ccb91ff4aad10b83d62d5a0464d3 (patch)
tree085e904de89946babe7c4a4a949f735ee3e6d6e4 /drivers/usb/serial/cp210x.c
parent968b822c0023861ef6e4e15bb68582b36e89ad29 (diff)
downloadlinux-4b6181caa411ccb91ff4aad10b83d62d5a0464d3.tar.xz
USB: serial: cp210x.c: add mark/space parity
Add mark and space parity support. Signed-off-by: Roland Koebler <r.koebler@yahoo.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/cp210x.c')
-rw-r--r--drivers/usb/serial/cp210x.c39
1 files changed, 22 insertions, 17 deletions
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index fd67cc53545b..b1e5db161487 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -520,18 +520,13 @@ static void cp210x_get_termios_port(struct usb_serial_port *port,
cflag |= PARENB;
break;
case BITS_PARITY_MARK:
- dbg("%s - parity = MARK (not supported, disabling parity)",
- __func__);
- cflag &= ~PARENB;
- bits &= ~BITS_PARITY_MASK;
- cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
+ dbg("%s - parity = MARK", __func__);
+ cflag |= (PARENB|PARODD|CMSPAR);
break;
case BITS_PARITY_SPACE:
- dbg("%s - parity = SPACE (not supported, disabling parity)",
- __func__);
- cflag &= ~PARENB;
- bits &= ~BITS_PARITY_MASK;
- cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
+ dbg("%s - parity = SPACE", __func__);
+ cflag &= ~PARODD;
+ cflag |= (PARENB|CMSPAR);
break;
default:
dbg("%s - Unknown parity mode, disabling parity", __func__);
@@ -588,7 +583,6 @@ static void cp210x_set_termios(struct tty_struct *tty,
if (!tty)
return;
- tty->termios->c_cflag &= ~CMSPAR;
cflag = tty->termios->c_cflag;
old_cflag = old_termios->c_cflag;
baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty));
@@ -643,16 +637,27 @@ static void cp210x_set_termios(struct tty_struct *tty,
"not supported by device\n");
}
- if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) {
+ if ((cflag & (PARENB|PARODD|CMSPAR)) !=
+ (old_cflag & (PARENB|PARODD|CMSPAR))) {
cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2);
bits &= ~BITS_PARITY_MASK;
if (cflag & PARENB) {
- if (cflag & PARODD) {
- bits |= BITS_PARITY_ODD;
- dbg("%s - parity = ODD", __func__);
+ if (cflag & CMSPAR) {
+ if (cflag & PARODD) {
+ bits |= BITS_PARITY_MARK;
+ dbg("%s - parity = MARK", __func__);
+ } else {
+ bits |= BITS_PARITY_SPACE;
+ dbg("%s - parity = SPACE", __func__);
+ }
} else {
- bits |= BITS_PARITY_EVEN;
- dbg("%s - parity = EVEN", __func__);
+ if (cflag & PARODD) {
+ bits |= BITS_PARITY_ODD;
+ dbg("%s - parity = ODD", __func__);
+ } else {
+ bits |= BITS_PARITY_EVEN;
+ dbg("%s - parity = EVEN", __func__);
+ }
}
}
if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2))