struct serial_state *spk_serial_init(int index)
{
int baud = 9600, quot = 0;
unsigned int cval = 0;
int cflag = CREAD | HUPCL | CLOCAL | B9600 | CS8;
struct serial_state *ser = NULL;
int err;
ser = rs_table + index;
/* Divisor, bytesize and parity */
quot = ser->baud_base / baud;
cval = cflag & (CSIZE | CSTOPB);
#if defined(__powerpc__) || defined(__alpha__)
cval >>= 8;
#else /* !__powerpc__ && !__alpha__ */
cval >>= 4;
#endif /* !__powerpc__ && !__alpha__ */
if (cflag & PARENB)
cval |= UART_LCR_PARITY;
if (!(cflag & PARODD))
cval |= UART_LCR_EPAR;
if (synth_request_region(ser->port, 8)) {
/* try to take it back. */
printk(KERN_INFO "Ports not available, trying to steal them\n");
__release_region(&ioport_resource, ser->port, 8);
err = synth_request_region(ser->port, 8);
if (err) {
pr_warn("Unable to allocate port at %lx, errno %i",
ser->port, err);
return NULL;
}
}
/* Disable UART interrupts, set DTR and RTS high
* and set speed. */
outb(cval | UART_LCR_DLAB, ser->port + UART_LCR); /* set DLAB */
outb(quot & 0xff, ser->port + UART_DLL); /* LS of divisor */
outb(quot >> 8, ser->port + UART_DLM); /* MS of divisor */
outb(cval, ser->port + UART_LCR); /* reset DLAB */
/* Turn off Interrupts */
outb(0, ser->port + UART_IER);
outb(UART_MCR_DTR | UART_MCR_RTS, ser->port + UART_MCR);
/* If we read 0xff from the LSR, there is no UART here. */
if (inb(ser->port + UART_LSR) == 0xff) {
synth_release_region(ser->port, 8);
serstate = NULL;
return NULL;
}
mdelay(1);
speakup_info.port_tts = ser->port;
serstate = ser;
start_serial_interrupt(ser->irq);
return ser;
}
const struct old_serial_port *spk_serial_init(int index)
{
int baud = 9600, quot = 0;
unsigned int cval = 0;
int cflag = CREAD | HUPCL | CLOCAL | B9600 | CS8;
const struct old_serial_port *ser = rs_table + index;
int err;
quot = ser->baud_base / baud;
cval = cflag & (CSIZE | CSTOPB);
#if defined(__powerpc__) || defined(__alpha__)
cval >>= 8;
#else
cval >>= 4;
#endif
if (cflag & PARENB)
cval |= UART_LCR_PARITY;
if (!(cflag & PARODD))
cval |= UART_LCR_EPAR;
if (synth_request_region(ser->port, 8)) {
printk(KERN_INFO "Ports not available, trying to steal them\n");
__release_region(&ioport_resource, ser->port, 8);
err = synth_request_region(ser->port, 8);
if (err) {
pr_warn("Unable to allocate port at %x, errno %i",
ser->port, err);
return NULL;
}
}
outb(cval | UART_LCR_DLAB, ser->port + UART_LCR);
outb(quot & 0xff, ser->port + UART_DLL);
outb(quot >> 8, ser->port + UART_DLM);
outb(cval, ser->port + UART_LCR);
outb(0, ser->port + UART_IER);
outb(UART_MCR_DTR | UART_MCR_RTS, ser->port + UART_MCR);
if (inb(ser->port + UART_LSR) == 0xff) {
synth_release_region(ser->port, 8);
serstate = NULL;
return NULL;
}
mdelay(1);
speakup_info.port_tts = ser->port;
serstate = ser;
start_serial_interrupt(ser->irq);
return ser;
}
