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USB: mct232: speed, new termios and compliance cleanups 

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox 2007-12-13 16:15:29 -08:00 committed by Greg Kroah-Hartman
parent e7806e366b
commit d0fab0ddf3
2 changed files with 18 additions and 10 deletions
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26
drivers/usb/serial/mct_u232.c
View File

@ -182,10 +182,11 @@ struct mct_u232_private {
/* /*
* Later day 2.6.0-test kernels have new baud rates like B230400 which * Later day 2.6.0-test kernels have new baud rates like B230400 which
* we do not know how to support. We ignore them for the moment. * we do not know how to support. We ignore them for the moment.
* XXX Rate-limit the error message, it's user triggerable.
*/ */
static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value) static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value, speed_t *result)
{ {
*result = value;
if (le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_SITECOM_PID if (le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_SITECOM_PID
|| le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_BELKIN_F5U109_PID) { || le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_BELKIN_F5U109_PID) {
switch (value) { switch (value) {
@ -200,11 +201,13 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value
case 57600: return 0x0b; case 57600: return 0x0b;
case 115200: return 0x0c; case 115200: return 0x0c;
default: default:
err("MCT USB-RS232: unsupported baudrate request 0x%x," *result = 9600;
" using default of B9600", value);
return 0x08; return 0x08;
} }
} else { } else {
/* FIXME: Can we use any divider - should we do
divider = 115200/value;
real baud = 115200/divider */
switch (value) { switch (value) {
case 300: break; case 300: break;
case 600: break; case 600: break;
@ -217,9 +220,8 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value
case 57600: break; case 57600: break;
case 115200: break; case 115200: break;
default: default:
err("MCT USB-RS232: unsupported baudrate request 0x%x,"
" using default of B9600", value);
value = 9600; value = 9600;
*result = 9600;
} }
return 115200/value; return 115200/value;
} }
@ -232,16 +234,19 @@ static int mct_u232_set_baud_rate(struct usb_serial *serial, struct usb_serial_p
int rc; int rc;
unsigned char zero_byte = 0; unsigned char zero_byte = 0;
unsigned char cts_enable_byte = 0; unsigned char cts_enable_byte = 0;
speed_t speed;
divisor = cpu_to_le32(mct_u232_calculate_baud_rate(serial, value)); divisor = cpu_to_le32(mct_u232_calculate_baud_rate(serial, value, &speed));
rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
MCT_U232_SET_BAUD_RATE_REQUEST, MCT_U232_SET_BAUD_RATE_REQUEST,
MCT_U232_SET_REQUEST_TYPE, MCT_U232_SET_REQUEST_TYPE,
0, 0, &divisor, MCT_U232_SET_BAUD_RATE_SIZE, 0, 0, &divisor, MCT_U232_SET_BAUD_RATE_SIZE,
WDR_TIMEOUT); WDR_TIMEOUT);
if (rc < 0) if (rc < 0) /*FIXME: What value speed results */
err("Set BAUD RATE %d failed (error = %d)", value, rc); err("Set BAUD RATE %d failed (error = %d)", value, rc);
else
tty_encode_baud_rate(port->tty, speed, speed);
dbg("set_baud_rate: value: 0x%x, divisor: 0x%x", value, divisor); dbg("set_baud_rate: value: 0x%x, divisor: 0x%x", value, divisor);
/* Mimic the MCT-supplied Windows driver (version 1.21P.0104), which /* Mimic the MCT-supplied Windows driver (version 1.21P.0104), which
@ -608,7 +613,8 @@ static void mct_u232_set_termios (struct usb_serial_port *port,
{ {
struct usb_serial *serial = port->serial; struct usb_serial *serial = port->serial;
struct mct_u232_private *priv = usb_get_serial_port_data(port); struct mct_u232_private *priv = usb_get_serial_port_data(port);
unsigned int cflag = port->tty->termios->c_cflag; struct ktermios *termios = port->tty->termios;
unsigned int cflag = termios->c_cflag;
unsigned int old_cflag = old_termios->c_cflag; unsigned int old_cflag = old_termios->c_cflag;
unsigned long flags; unsigned long flags;
unsigned int control_state; unsigned int control_state;
@ -670,6 +676,8 @@ static void mct_u232_set_termios (struct usb_serial_port *port,
break; break;
} }
termios->c_cflag &= ~CMSPAR;
/* set the number of stop bits */ /* set the number of stop bits */
last_lcr |= (cflag & CSTOPB) ? last_lcr |= (cflag & CSTOPB) ?
MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1; MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1;

2
drivers/usb/serial/mct_u232.h
View File

@ -79,7 +79,7 @@
* and "Intel solution". They are the regular MCT and "Sitecom" for us. * and "Intel solution". They are the regular MCT and "Sitecom" for us.
* This is pointless to document in the header, see the code for the bits. * This is pointless to document in the header, see the code for the bits.
*/ */
static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value); static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value, speed_t *result);
/* /*
* Line Control Register (LCR) * Line Control Register (LCR)