static void acm_tty_set_termios(struct tty_struct *tty,
struct ktermios *termios_old)
{
struct acm *acm = tty->driver_data;
struct ktermios *termios = &tty->termios;
struct usb_cdc_line_coding newline;
int newctrl = acm->ctrlout;
newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
newline.bParityType = termios->c_cflag & PARENB ?
(termios->c_cflag & PARODD ? 1 : 2) +
(termios->c_cflag & CMSPAR ? 2 : 0) : 0;
switch (termios->c_cflag & CSIZE) {
case CS5:
newline.bDataBits = 5;
break;
case CS6:
newline.bDataBits = 6;
break;
case CS7:
newline.bDataBits = 7;
break;
case CS8:
default:
newline.bDataBits = 8;
break;
}
/* FIXME: Needs to clear unsupported bits in the termios */
acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
if (C_BAUD(tty) == B0) {
newline.dwDTERate = acm->line.dwDTERate;
newctrl &= ~ACM_CTRL_DTR;
} else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) {
newctrl |= ACM_CTRL_DTR;
}
if (newctrl != acm->ctrlout)
acm_set_control(acm, acm->ctrlout = newctrl);
if (memcmp(&acm->line, &newline, sizeof newline)) {
memcpy(&acm->line, &newline, sizeof newline);
dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
__func__,
le32_to_cpu(newline.dwDTERate),
newline.bCharFormat, newline.bParityType,
newline.bDataBits);
acm_set_line(acm, &acm->line);
}
}
static int mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
int retval = 0;
unsigned int control_state;
unsigned long flags;
unsigned char last_lcr;
unsigned char last_msr;
/* Compensate for a hardware bug: although the Sitecom U232-P25
* device reports a maximum output packet size of 32 bytes,
* it seems to be able to accept only 16 bytes (and that's what
* SniffUSB says too...)
*/
if (le16_to_cpu(serial->dev->descriptor.idProduct)
== MCT_U232_SITECOM_PID)
port->bulk_out_size = 16;
/* Do a defined restart: the normal serial device seems to
* always turn on DTR and RTS here, so do the same. I'm not
* sure if this is really necessary. But it should not harm
* either.
*/
spin_lock_irqsave(&priv->lock, flags);
if (tty && C_BAUD(tty))
priv->control_state = TIOCM_DTR | TIOCM_RTS;
else
priv->control_state = 0;
priv->last_lcr = (MCT_U232_DATA_BITS_8 |
MCT_U232_PARITY_NONE |
MCT_U232_STOP_BITS_1);
control_state = priv->control_state;
last_lcr = priv->last_lcr;
spin_unlock_irqrestore(&priv->lock, flags);
mct_u232_set_modem_ctrl(port, control_state);
mct_u232_set_line_ctrl(port, last_lcr);
/* Read modem status and update control state */
mct_u232_get_modem_stat(port, &last_msr);
spin_lock_irqsave(&priv->lock, flags);
priv->last_msr = last_msr;
mct_u232_msr_to_state(port, &priv->control_state, priv->last_msr);
spin_unlock_irqrestore(&priv->lock, flags);
retval = usb_submit_urb(priv->read_urb, GFP_KERNEL);
if (retval) {
dev_err(&port->dev,
"usb_submit_urb(read) failed pipe 0x%x err %d\n",
port->read_urb->pipe, retval);
goto error;
}
retval = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
if (retval) {
usb_kill_urb(priv->read_urb);
dev_err(&port->dev,
"usb_submit_urb(read int) failed pipe 0x%x err %d",
port->interrupt_in_urb->pipe, retval);
goto error;
}
return 0;
error:
return retval;
} /* mct_u232_open */
int tty_port_block_til_ready(struct tty_port *port,
struct tty_struct *tty, struct file *filp)
{
int do_clocal = 0, retval;
unsigned long flags;
DEFINE_WAIT(wait);
/* if non-blocking mode is set we can pass directly to open unless
the port has just hung up or is in another error state */
if (tty_io_error(tty)) {
tty_port_set_active(port, 1);
return 0;
}
if (filp == NULL || (filp->f_flags & O_NONBLOCK)) {
/* Indicate we are open */
if (C_BAUD(tty))
tty_port_raise_dtr_rts(port);
tty_port_set_active(port, 1);
return 0;
}
if (C_CLOCAL(tty))
do_clocal = 1;
/* Block waiting until we can proceed. We may need to wait for the
carrier, but we must also wait for any close that is in progress
before the next open may complete */
retval = 0;
/* The port lock protects the port counts */
spin_lock_irqsave(&port->lock, flags);
port->count--;
port->blocked_open++;
spin_unlock_irqrestore(&port->lock, flags);
while (1) {
/* Indicate we are open */
if (C_BAUD(tty) && tty_port_initialized(port))
tty_port_raise_dtr_rts(port);
prepare_to_wait(&port->open_wait, &wait, TASK_INTERRUPTIBLE);
/* Check for a hangup or uninitialised port.
Return accordingly */
if (tty_hung_up_p(filp) || !tty_port_initialized(port)) {
if (port->flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
break;
}
/*
* Probe the carrier. For devices with no carrier detect
* tty_port_carrier_raised will always return true.
* Never ask drivers if CLOCAL is set, this causes troubles
* on some hardware.
*/
if (do_clocal || tty_port_carrier_raised(port))
break;
if (signal_pending(current)) {
retval = -ERESTARTSYS;
break;
}
tty_unlock(tty);
schedule();
tty_lock(tty);
}
finish_wait(&port->open_wait, &wait);
/* Update counts. A parallel hangup will have set count to zero and
we must not mess that up further */
spin_lock_irqsave(&port->lock, flags);
if (!tty_hung_up_p(filp))
port->count++;
port->blocked_open--;
spin_unlock_irqrestore(&port->lock, flags);
if (retval == 0)
tty_port_set_active(port, 1);
return retval;
}
static int startup(struct tty_struct *tty, struct serial_state *info)
{
struct tty_port *port = &info->tport;
unsigned long flags;
int retval=0;
unsigned long page;
page = get_zeroed_page(GFP_KERNEL);
if (!page)
return -ENOMEM;
local_irq_save(flags);
if (port->flags & ASYNC_INITIALIZED) {
free_page(page);
goto errout;
}
if (info->xmit.buf)
free_page(page);
else
info->xmit.buf = (unsigned char *) page;
#ifdef SERIAL_DEBUG_OPEN
printk("starting up ttys%d ...", info->line);
#endif
/* Clear anything in the input buffer */
custom.intreq = IF_RBF;
mb();
retval = request_irq(IRQ_AMIGA_VERTB, ser_vbl_int, 0, "serial status", info);
if (retval) {
if (serial_isroot()) {
set_bit(TTY_IO_ERROR, &tty->flags);
retval = 0;
}
goto errout;
}
/* enable both Rx and Tx interrupts */
custom.intena = IF_SETCLR | IF_RBF | IF_TBE;
mb();
info->IER = UART_IER_MSI;
/* remember current state of the DCD and CTS bits */
current_ctl_bits = ciab.pra & (SER_DCD | SER_CTS | SER_DSR);
info->MCR = 0;
if (C_BAUD(tty))
info->MCR = SER_DTR | SER_RTS;
rtsdtr_ctrl(info->MCR);
clear_bit(TTY_IO_ERROR, &tty->flags);
info->xmit.head = info->xmit.tail = 0;
/*
* Set up the tty->alt_speed kludge
*/
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
tty->alt_speed = 57600;
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
tty->alt_speed = 115200;
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
tty->alt_speed = 230400;
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
tty->alt_speed = 460800;
/*
* and set the speed of the serial port
*/
change_speed(tty, info, NULL);
port->flags |= ASYNC_INITIALIZED;
local_irq_restore(flags);
return 0;
errout:
local_irq_restore(flags);
return retval;
}
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);
}
/*
* neo_param()
* Send any/all changes to the line to the UART.
*/
static void neo_param(struct tty_struct *tty)
{
unsigned char lcr = 0;
unsigned char uart_lcr = 0;
unsigned char ier = 0;
unsigned char uart_ier = 0;
uint baud = 9600;
int quot = 0;
struct dgnc_board *bd;
struct channel_t *ch;
struct un_t *un;
if (!tty || tty->magic != TTY_MAGIC)
return;
un = (struct un_t *)tty->driver_data;
if (!un || un->magic != DGNC_UNIT_MAGIC)
return;
ch = un->un_ch;
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
return;
bd = ch->ch_bd;
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
return;
/*
* If baud rate is zero, flush queues, and set mval to drop DTR.
*/
if ((ch->ch_c_cflag & (CBAUD)) == 0) {
ch->ch_r_head = 0;
ch->ch_r_tail = 0;
ch->ch_e_head = 0;
ch->ch_e_tail = 0;
ch->ch_w_head = 0;
ch->ch_w_tail = 0;
neo_flush_uart_write(ch);
neo_flush_uart_read(ch);
/* The baudrate is B0 so all modem lines are to be dropped. */
ch->ch_flags |= (CH_BAUD0);
ch->ch_mostat &= ~(UART_MCR_RTS | UART_MCR_DTR);
neo_assert_modem_signals(ch);
ch->ch_old_baud = 0;
return;
} else if (ch->ch_custom_speed) {
baud = ch->ch_custom_speed;
/* Handle transition from B0 */
if (ch->ch_flags & CH_BAUD0) {
ch->ch_flags &= ~(CH_BAUD0);
/*
* Bring back up RTS and DTR...
* Also handle RTS or DTR toggle if set.
*/
if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE))
ch->ch_mostat |= (UART_MCR_RTS);
if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE))
ch->ch_mostat |= (UART_MCR_DTR);
}
} else {
int iindex = 0;
int jindex = 0;
ulong bauds[4][16] = {
{ /* slowbaud */
0, 50, 75, 110,
134, 150, 200, 300,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{ /* slowbaud & CBAUDEX */
0, 57600, 115200, 230400,
460800, 150, 200, 921600,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{ /* fastbaud */
0, 57600, 76800, 115200,
131657, 153600, 230400, 460800,
921600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{ /* fastbaud & CBAUDEX */
0, 57600, 115200, 230400,
460800, 150, 200, 921600,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 }
};
/* Only use the TXPrint baud rate if the terminal unit is NOT open */
if (!(ch->ch_tun.un_flags & UN_ISOPEN) && (un->un_type == DGNC_PRINT))
baud = C_BAUD(ch->ch_pun.un_tty) & 0xff;
else
baud = C_BAUD(ch->ch_tun.un_tty) & 0xff;
if (ch->ch_c_cflag & CBAUDEX)
iindex = 1;
if (ch->ch_digi.digi_flags & DIGI_FAST)
iindex += 2;
jindex = baud;
if ((iindex >= 0) && (iindex < 4) && (jindex >= 0) && (jindex < 16))
baud = bauds[iindex][jindex];
else
baud = 0;
if (baud == 0)
baud = 9600;
/* Handle transition from B0 */
if (ch->ch_flags & CH_BAUD0) {
ch->ch_flags &= ~(CH_BAUD0);
/*
* Bring back up RTS and DTR...
* Also handle RTS or DTR toggle if set.
*/
if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE))
ch->ch_mostat |= (UART_MCR_RTS);
if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE))
ch->ch_mostat |= (UART_MCR_DTR);
}
}
if (ch->ch_c_cflag & PARENB)
lcr |= UART_LCR_PARITY;
if (!(ch->ch_c_cflag & PARODD))
lcr |= UART_LCR_EPAR;
/*
* Not all platforms support mark/space parity,
* so this will hide behind an ifdef.
*/
#ifdef CMSPAR
if (ch->ch_c_cflag & CMSPAR)
lcr |= UART_LCR_SPAR;
#endif
if (ch->ch_c_cflag & CSTOPB)
lcr |= UART_LCR_STOP;
switch (ch->ch_c_cflag & CSIZE) {
case CS5:
lcr |= UART_LCR_WLEN5;
break;
case CS6:
lcr |= UART_LCR_WLEN6;
break;
case CS7:
lcr |= UART_LCR_WLEN7;
break;
case CS8:
default:
lcr |= UART_LCR_WLEN8;
break;
}
uart_ier = readb(&ch->ch_neo_uart->ier);
ier = uart_ier;
uart_lcr = readb(&ch->ch_neo_uart->lcr);
if (baud == 0)
baud = 9600;
quot = ch->ch_bd->bd_dividend / baud;
if (quot != 0 && ch->ch_old_baud != baud) {
ch->ch_old_baud = baud;
writeb(UART_LCR_DLAB, &ch->ch_neo_uart->lcr);
writeb((quot & 0xff), &ch->ch_neo_uart->txrx);
writeb((quot >> 8), &ch->ch_neo_uart->ier);
writeb(lcr, &ch->ch_neo_uart->lcr);
}
/*
* neo_param()
* Send any/all changes to the line to the UART.
*/
static void neo_param(struct jsm_channel *ch)
{
u8 lcr = 0;
u8 uart_lcr, ier;
u32 baud;
int quot;
struct jsm_board *bd;
bd = ch->ch_bd;
if (!bd)
return;
/*
* If baud rate is zero, flush queues, and set mval to drop DTR.
*/
if ((ch->ch_c_cflag & (CBAUD)) == 0) {
ch->ch_r_head = ch->ch_r_tail = 0;
ch->ch_e_head = ch->ch_e_tail = 0;
ch->ch_w_head = ch->ch_w_tail = 0;
neo_flush_uart_write(ch);
neo_flush_uart_read(ch);
ch->ch_flags |= (CH_BAUD0);
ch->ch_mostat &= ~(UART_MCR_RTS | UART_MCR_DTR);
neo_assert_modem_signals(ch);
ch->ch_old_baud = 0;
return;
} else if (ch->ch_custom_speed) {
baud = ch->ch_custom_speed;
if (ch->ch_flags & CH_BAUD0)
ch->ch_flags &= ~(CH_BAUD0);
} else {
int i;
unsigned int cflag;
static struct {
unsigned int rate;
unsigned int cflag;
} baud_rates[] = {
{ 921600, B921600 },
{ 460800, B460800 },
{ 230400, B230400 },
{ 115200, B115200 },
{ 57600, B57600 },
{ 38400, B38400 },
{ 19200, B19200 },
{ 9600, B9600 },
{ 4800, B4800 },
{ 2400, B2400 },
{ 1200, B1200 },
{ 600, B600 },
{ 300, B300 },
{ 200, B200 },
{ 150, B150 },
{ 134, B134 },
{ 110, B110 },
{ 75, B75 },
{ 50, B50 },
};
cflag = C_BAUD(ch->uart_port.state->port.tty);
baud = 9600;
for (i = 0; i < ARRAY_SIZE(baud_rates); i++) {
if (baud_rates[i].cflag == cflag) {
baud = baud_rates[i].rate;
break;
}
}
if (ch->ch_flags & CH_BAUD0)
ch->ch_flags &= ~(CH_BAUD0);
}
if (ch->ch_c_cflag & PARENB)
lcr |= UART_LCR_PARITY;
if (!(ch->ch_c_cflag & PARODD))
lcr |= UART_LCR_EPAR;
/*
* Not all platforms support mark/space parity,
* so this will hide behind an ifdef.
*/
#ifdef CMSPAR
if (ch->ch_c_cflag & CMSPAR)
lcr |= UART_LCR_SPAR;
#endif
if (ch->ch_c_cflag & CSTOPB)
lcr |= UART_LCR_STOP;
switch (ch->ch_c_cflag & CSIZE) {
case CS5:
lcr |= UART_LCR_WLEN5;
break;
case CS6:
lcr |= UART_LCR_WLEN6;
break;
case CS7:
lcr |= UART_LCR_WLEN7;
break;
case CS8:
default:
lcr |= UART_LCR_WLEN8;
break;
}
ier = readb(&ch->ch_neo_uart->ier);
uart_lcr = readb(&ch->ch_neo_uart->lcr);
if (baud == 0)
baud = 9600;
quot = ch->ch_bd->bd_dividend / baud;
if (quot != 0) {
ch->ch_old_baud = baud;
writeb(UART_LCR_DLAB, &ch->ch_neo_uart->lcr);
writeb((quot & 0xff), &ch->ch_neo_uart->txrx);
writeb((quot >> 8), &ch->ch_neo_uart->ier);
writeb(lcr, &ch->ch_neo_uart->lcr);
}
/*
* neo_param()
* Send any/all changes to the line to the UART.
*/
static void neo_param(struct jsm_channel *ch)
{
u8 lcr = 0;
u8 uart_lcr = 0;
u8 ier = 0;
u32 baud = 9600;
int quot = 0;
struct jsm_board *bd;
bd = ch->ch_bd;
if (!bd)
return;
/*
* If baud rate is zero, flush queues, and set mval to drop DTR.
*/
if ((ch->ch_c_cflag & (CBAUD)) == 0) {
ch->ch_r_head = ch->ch_r_tail = 0;
ch->ch_e_head = ch->ch_e_tail = 0;
ch->ch_w_head = ch->ch_w_tail = 0;
neo_flush_uart_write(ch);
neo_flush_uart_read(ch);
ch->ch_flags |= (CH_BAUD0);
ch->ch_mostat &= ~(UART_MCR_RTS | UART_MCR_DTR);
neo_assert_modem_signals(ch);
ch->ch_old_baud = 0;
return;
} else if (ch->ch_custom_speed) {
baud = ch->ch_custom_speed;
if (ch->ch_flags & CH_BAUD0)
ch->ch_flags &= ~(CH_BAUD0);
} else {
int iindex = 0;
int jindex = 0;
const u64 bauds[4][16] = {
{
0, 50, 75, 110,
134, 150, 200, 300,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{
0, 57600, 115200, 230400,
460800, 150, 200, 921600,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{
0, 57600, 76800, 115200,
131657, 153600, 230400, 460800,
921600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{
0, 57600, 115200, 230400,
460800, 150, 200, 921600,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 }
};
baud = C_BAUD(ch->uart_port.info->tty) & 0xff;
if (ch->ch_c_cflag & CBAUDEX)
iindex = 1;
jindex = baud;
if ((iindex >= 0) && (iindex < 4) && (jindex >= 0) && (jindex < 16))
baud = bauds[iindex][jindex];
else {
jsm_printk(IOCTL, DEBUG, &ch->ch_bd->pci_dev,
"baud indices were out of range (%d)(%d)",
iindex, jindex);
baud = 0;
}
if (baud == 0)
baud = 9600;
if (ch->ch_flags & CH_BAUD0)
ch->ch_flags &= ~(CH_BAUD0);
}
if (ch->ch_c_cflag & PARENB)
lcr |= UART_LCR_PARITY;
if (!(ch->ch_c_cflag & PARODD))
lcr |= UART_LCR_EPAR;
/*
* Not all platforms support mark/space parity,
* so this will hide behind an ifdef.
*/
#ifdef CMSPAR
if (ch->ch_c_cflag & CMSPAR)
lcr |= UART_LCR_SPAR;
#endif
if (ch->ch_c_cflag & CSTOPB)
lcr |= UART_LCR_STOP;
switch (ch->ch_c_cflag & CSIZE) {
case CS5:
lcr |= UART_LCR_WLEN5;
break;
case CS6:
lcr |= UART_LCR_WLEN6;
break;
case CS7:
lcr |= UART_LCR_WLEN7;
break;
case CS8:
default:
lcr |= UART_LCR_WLEN8;
break;
}
ier = readb(&ch->ch_neo_uart->ier);
uart_lcr = readb(&ch->ch_neo_uart->lcr);
if (baud == 0)
baud = 9600;
quot = ch->ch_bd->bd_dividend / baud;
if (quot != 0) {
ch->ch_old_baud = baud;
writeb(UART_LCR_DLAB, &ch->ch_neo_uart->lcr);
writeb((quot & 0xff), &ch->ch_neo_uart->txrx);
writeb((quot >> 8), &ch->ch_neo_uart->ier);
writeb(lcr, &ch->ch_neo_uart->lcr);
}
int tty_port_block_til_ready(struct tty_port *port,
struct tty_struct *tty, struct file *filp)
{
int do_clocal = 0, retval;
unsigned long flags;
DEFINE_WAIT(wait);
/* block if port is in the process of being closed */
if (port->flags & ASYNC_CLOSING) {
wait_event_interruptible_tty(tty, port->close_wait,
!(port->flags & ASYNC_CLOSING));
if (port->flags & ASYNC_HUP_NOTIFY)
return -EAGAIN;
else
return -ERESTARTSYS;
}
/* if non-blocking mode is set we can pass directly to open unless
the port has just hung up or is in another error state */
if (tty->flags & (1 << TTY_IO_ERROR)) {
port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
if (filp->f_flags & O_NONBLOCK) {
/* Indicate we are open */
if (tty->termios.c_cflag & CBAUD)
tty_port_raise_dtr_rts(port);
port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
if (C_CLOCAL(tty))
do_clocal = 1;
/* Block waiting until we can proceed. We may need to wait for the
carrier, but we must also wait for any close that is in progress
before the next open may complete */
retval = 0;
/* The port lock protects the port counts */
spin_lock_irqsave(&port->lock, flags);
atomic_dec(&port->count);
port->blocked_open++;
spin_unlock_irqrestore(&port->lock, flags);
while (1) {
/* Indicate we are open */
if (C_BAUD(tty) && test_bit(ASYNCB_INITIALIZED, &port->flags))
tty_port_raise_dtr_rts(port);
prepare_to_wait(&port->open_wait, &wait, TASK_INTERRUPTIBLE);
/* Check for a hangup or uninitialised port.
Return accordingly */
if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
if (port->flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
break;
}
/*
* Probe the carrier. For devices with no carrier detect
* tty_port_carrier_raised will always return true.
* Never ask drivers if CLOCAL is set, this causes troubles
* on some hardware.
*/
if (!(port->flags & ASYNC_CLOSING) &&
(do_clocal || tty_port_carrier_raised(port)))
break;
if (signal_pending(current)) {
retval = -ERESTARTSYS;
break;
}
tty_unlock(tty);
schedule();
tty_lock(tty);
}
finish_wait(&port->open_wait, &wait);
/* Update counts. A parallel hangup will have set count to zero and
we must not mess that up further */
spin_lock_irqsave(&port->lock, flags);
if (!tty_hung_up_p(filp))
atomic_inc(&port->count);
port->blocked_open--;
if (retval == 0)
port->flags |= ASYNC_NORMAL_ACTIVE;
spin_unlock_irqrestore(&port->lock, flags);
return retval;
}
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);
}
