void nc100_tty_init(void)
{
/* Reset the 8251 */
mod_control(0x00, 0x08);
nap();
mod_control(0x08, 0x00);
nap();
uartb = SER_INIT;
nap();
uartb = SER_RXTX;
nap();
uarta;
uarta;
}
/* Select a drive and ensure the motor is on. */
static void fd_select(int minor)
{
(void)minor;
mod_control(0x00, 0x20); /* motor on (active low) */
nudge_timer();
}
/* (called from interrupt context) */
void devfd_spindown(void)
{
if (spindown_timer && timer_expired(spindown_timer))
{
mod_control(0x20, 0x00); /* motor off (active low) */
spindown_timer = 0;
}
}
int nc100_tty_open(uint8_t minor, uint16_t flag)
{
int err;
if (!minor)
minor = udata.u_ptab->p_tty;
err = tty_open(minor, flag);
if (err)
return err;
if (minor == 2) {
mod_control(0, 0x10); /* turn on the line driver */
nap();
mod_control(0x06, 0x01); /* 9600 baud */
#ifdef CONFIG_NC200
irqen = 0x1C;
#else
irqen = 0x0B; /* Allow serial interrupts */
#endif
}
return (0);
}
int nc100_tty_close(uint8_t minor)
{
tty_close(minor);
if (minor == 2) {
#ifdef CONFIG_NC200
irqen = 0x18;
#else
irqen = 0x08; /* mask serial interrupts */
#endif
mod_control(0x10, 0); /* turn off the line driver */
}
return (0);
}
/* Called to set baud rate etc */
void tty_setup(uint8_t minor)
{
uint16_t b;
if (minor == 1)
return;
b = ttydata[2].c_cflag & CBAUD;
if (b < B150)
b = B150;
if (b > B19200)
b = B19200;
/* 0 = B150 .. 7 = B19200 in the same spacing and order as termios,
how convenient */
mod_control(b - B150, 0x7);
}
