static void mxu1_set_termios(struct tty_struct *tty,
struct usb_serial_port *port,
struct ktermios *old_termios)
{
struct mxu1_port *mxport = usb_get_serial_port_data(port);
struct mxu1_uart_config *config;
tcflag_t cflag, iflag;
speed_t baud;
int status;
unsigned int mcr;
dev_dbg(&port->dev, "%s\n", __func__);
cflag = tty->termios.c_cflag;
iflag = tty->termios.c_iflag;
if (old_termios &&
!tty_termios_hw_change(&tty->termios, old_termios) &&
tty->termios.c_iflag == old_termios->c_iflag) {
dev_dbg(&port->dev, "%s - nothing to change\n", __func__);
return;
}
dev_dbg(&port->dev,
"%s - clfag %08x, iflag %08x\n", __func__, cflag, iflag);
if (old_termios) {
dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n",
__func__,
old_termios->c_cflag,
old_termios->c_iflag);
}
config = kzalloc(sizeof(*config), GFP_KERNEL);
if (!config)
return;
config->wFlags = 0;
/* these flags must be set */
config->wFlags |= MXU1_UART_ENABLE_MS_INTS;
config->wFlags |= MXU1_UART_ENABLE_AUTO_START_DMA;
if (mxport->mxp_send_break == MXU1_LCR_BREAK)
config->wFlags |= MXU1_UART_SEND_BREAK_SIGNAL;
config->bUartMode = (u8)(mxport->mxp_uart_mode);
switch (C_CSIZE(tty)) {
case CS5:
config->bDataBits = MXU1_UART_5_DATA_BITS;
break;
case CS6:
config->bDataBits = MXU1_UART_6_DATA_BITS;
break;
case CS7:
config->bDataBits = MXU1_UART_7_DATA_BITS;
break;
default:
case CS8:
config->bDataBits = MXU1_UART_8_DATA_BITS;
break;
}
if (C_PARENB(tty)) {
config->wFlags |= MXU1_UART_ENABLE_PARITY_CHECKING;
if (C_CMSPAR(tty)) {
if (C_PARODD(tty))
config->bParity = MXU1_UART_MARK_PARITY;
else
config->bParity = MXU1_UART_SPACE_PARITY;
} else {
if (C_PARODD(tty))
config->bParity = MXU1_UART_ODD_PARITY;
else
config->bParity = MXU1_UART_EVEN_PARITY;
}
} else {
config->bParity = MXU1_UART_NO_PARITY;
}
if (C_CSTOPB(tty))
config->bStopBits = MXU1_UART_2_STOP_BITS;
else
config->bStopBits = MXU1_UART_1_STOP_BITS;
if (C_CRTSCTS(tty)) {
/* RTS flow control must be off to drop RTS for baud rate B0 */
if (C_BAUD(tty) != B0)
config->wFlags |= MXU1_UART_ENABLE_RTS_IN;
config->wFlags |= MXU1_UART_ENABLE_CTS_OUT;
}
if (I_IXOFF(tty) || I_IXON(tty)) {
config->cXon = START_CHAR(tty);
config->cXoff = STOP_CHAR(tty);
if (I_IXOFF(tty))
config->wFlags |= MXU1_UART_ENABLE_X_IN;
if (I_IXON(tty))
config->wFlags |= MXU1_UART_ENABLE_X_OUT;
}
baud = tty_get_baud_rate(tty);
if (!baud)
baud = 9600;
config->wBaudRate = MXU1_BAUD_BASE / baud;
dev_dbg(&port->dev, "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
__func__, baud, config->wBaudRate, config->wFlags,
config->bDataBits, config->bParity, config->bStopBits,
config->cXon, config->cXoff, config->bUartMode);
cpu_to_be16s(&config->wBaudRate);
cpu_to_be16s(&config->wFlags);
status = mxu1_send_ctrl_data_urb(port->serial, MXU1_SET_CONFIG, 0,
MXU1_UART1_PORT, (u8 *)config,
sizeof(*config));
if (status)
dev_err(&port->dev, "cannot set config: %d\n", status);
mutex_lock(&mxport->mxp_mutex);
mcr = mxport->mxp_mcr;
if (C_BAUD(tty) == B0)
mcr &= ~(MXU1_MCR_DTR | MXU1_MCR_RTS);
else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
mcr |= ~(MXU1_MCR_DTR | MXU1_MCR_RTS);
status = mxu1_set_mcr(port, mcr);
if (status)
dev_err(&port->dev, "cannot set modem control: %d\n", status);
else
mxport->mxp_mcr = mcr;
mutex_unlock(&mxport->mxp_mutex);
kfree(config);
}
static void pl2303_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
struct usb_serial *serial = port->serial;
struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
struct pl2303_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
unsigned char *buf;
int i;
u8 control;
if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
return;
buf = kzalloc(7, GFP_KERNEL);
if (!buf) {
dev_err(&port->dev, "%s - out of memory.\n", __func__);
/* Report back no change occurred */
if (old_termios)
tty->termios = *old_termios;
return;
}
i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
0, 0, buf, 7, 100);
dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf);
switch (C_CSIZE(tty)) {
case CS5:
buf[6] = 5;
break;
case CS6:
buf[6] = 6;
break;
case CS7:
buf[6] = 7;
break;
default:
case CS8:
buf[6] = 8;
}
dev_dbg(&port->dev, "data bits = %d\n", buf[6]);
/* For reference buf[0]:buf[3] baud rate value */
pl2303_encode_baudrate(tty, port, &buf[0]);
/* For reference buf[4]=0 is 1 stop bits */
/* For reference buf[4]=1 is 1.5 stop bits */
/* For reference buf[4]=2 is 2 stop bits */
if (C_CSTOPB(tty)) {
/*
* NOTE: Comply with "real" UARTs / RS232:
* use 1.5 instead of 2 stop bits with 5 data bits
*/
if (C_CSIZE(tty) == CS5) {
buf[4] = 1;
dev_dbg(&port->dev, "stop bits = 1.5\n");
} else {
buf[4] = 2;
dev_dbg(&port->dev, "stop bits = 2\n");
}
} else {
buf[4] = 0;
dev_dbg(&port->dev, "stop bits = 1\n");
}
if (C_PARENB(tty)) {
/* For reference buf[5]=0 is none parity */
/* For reference buf[5]=1 is odd parity */
/* For reference buf[5]=2 is even parity */
/* For reference buf[5]=3 is mark parity */
/* For reference buf[5]=4 is space parity */
if (C_PARODD(tty)) {
if (tty->termios.c_cflag & CMSPAR) {
buf[5] = 3;
dev_dbg(&port->dev, "parity = mark\n");
} else {
buf[5] = 1;
dev_dbg(&port->dev, "parity = odd\n");
}
} else {
if (tty->termios.c_cflag & CMSPAR) {
buf[5] = 4;
dev_dbg(&port->dev, "parity = space\n");
} else {
buf[5] = 2;
dev_dbg(&port->dev, "parity = even\n");
}
}
} else {
buf[5] = 0;
dev_dbg(&port->dev, "parity = none\n");
}
/*
* Some PL2303 are known to lose bytes if you change serial settings
* even to the same values as before. Thus we actually need to filter
* in this specific case.
*
* Note that the tty_termios_hw_change check above is not sufficient
* as a previously requested baud rate may differ from the one
* actually used (and stored in old_termios).
*
* NOTE: No additional locking needed for line_settings as it is
* only used in set_termios, which is serialised against itself.
*/
if (!old_termios || memcmp(buf, priv->line_settings, 7)) {
i = usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE,
0, 0, buf, 7, 100);
dev_dbg(&port->dev, "0x21:0x20:0:0 %d\n", i);
if (i == 7)
memcpy(priv->line_settings, buf, 7);
}
/* change control lines if we are switching to or from B0 */
spin_lock_irqsave(&priv->lock, flags);
control = priv->line_control;
if (C_BAUD(tty) == B0)
priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
if (control != priv->line_control) {
control = priv->line_control;
spin_unlock_irqrestore(&priv->lock, flags);
pl2303_set_control_lines(port, control);
} else {
spin_unlock_irqrestore(&priv->lock, flags);
}
memset(buf, 0, 7);
i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
0, 0, buf, 7, 100);
dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf);
if (C_CRTSCTS(tty)) {
if (spriv->type == HX)
pl2303_vendor_write(0x0, 0x61, serial);
else
pl2303_vendor_write(0x0, 0x41, serial);
} else {
pl2303_vendor_write(0x0, 0x0, serial);
}
kfree(buf);
}
