static void nb85e_uart_tty_getserial (void *driver_data, struct serial_struct *s)
{
struct nb85e_uart_tty_port *port = driver_data;
s->line = port->chan;
s->xmit_fifo_size = 1;
s->irq = IRQ_INTSR (port->chan); /* actually have TX irq too, but... */
}
static void nb85e_uart_tty_shutdown_port (void *driver_data)
{
struct nb85e_uart_tty_port *port = driver_data;
port->gs.flags &= ~ GS_ACTIVE;
/* Disable port interrupts. */
free_irq (IRQ_INTST (port->chan), port);
free_irq (IRQ_INTSR (port->chan), port);
/* Turn off xmit/recv enable bits. */
NB85E_UART_ASIM (port->chan) &= ~(NB85E_UART_ASIM_TXE | NB85E_UART_ASIM_RXE);
/* Then reset the channel. */
NB85E_UART_ASIM (port->chan) = 0;
}
void __init mach_sched_init (struct irqaction *timer_action)
{
/* Select timer interrupt instead of external pin. */
TEG_ISS |= 0x1;
/* Start hardware timer. */
v850e_timer_d_configure (0, HZ);
/* Install timer interrupt handler. */
setup_irq (IRQ_INTCMD(0), timer_action);
}
static struct v850e_intc_irq_init irq_inits[] = {
{ "IRQ", 0, NUM_CPU_IRQS, 1, 7 },
{ "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 },
{ "SER", IRQ_INTSER(0), IRQ_INTSER_NUM, 1, 3 },
{ "SR", IRQ_INTSR(0), IRQ_INTSR_NUM, 1, 4 },
{ "ST", IRQ_INTST(0), IRQ_INTST_NUM, 1, 5 },
{ 0 }
};
#define NUM_IRQ_INITS ((sizeof irq_inits / sizeof irq_inits[0]) - 1)
static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
/* Initialize MA chip interrupts. */
void __init teg_init_irqs (void)
{
v850e_intc_init_irq_types (irq_inits, hw_itypes);
}
/* Called before configuring an on-chip UART. */
void teg_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
int nb85e_uart_tty_open (struct tty_struct *tty, struct file *filp)
{
int err;
struct nb85e_uart_tty_port *port;
unsigned chan = MINOR (tty->device) - NB85E_UART_MINOR_BASE;
if (chan >= NB85E_UART_NUM_CHANNELS)
return -ENODEV;
port = &nb85e_uart_tty_ports[chan];
tty->driver_data = port;
port->gs.tty = tty;
port->gs.count++;
port->tqueue.routine = gs_do_softint;
port->tqueue.data = &port->gs;
/*
* Start up serial port
*/
err = gs_init_port (&port->gs);
if (err)
goto failed_1;
port->gs.flags |= GS_ACTIVE;
if (port->gs.count == 1) {
MOD_INC_USE_COUNT;
/* Alloc RX irq. */
err = request_irq (IRQ_INTSR (chan), nb85e_uart_tty_rx_irq,
SA_INTERRUPT, "nb85e_uart", port);
if (err)
goto failed_2;
/* Alloc TX irq. */
err = request_irq (IRQ_INTST (chan), nb85e_uart_tty_tx_irq,
SA_INTERRUPT, "nb85e_uart", port);
if (err) {
free_irq (IRQ_INTSR (chan), port);
goto failed_2;
}
}
err = gs_block_til_ready (port, filp);
if (err)
goto failed_3;
*tty->termios = port->gs.normal_termios;
nb85e_uart_tty_enable_rx_interrupts (port);
port->gs.session = current->session;
port->gs.pgrp = current->pgrp;
return 0;
failed_3:
free_irq (IRQ_INTST (chan), port);
free_irq (IRQ_INTSR (chan), port);
failed_2:
MOD_DEC_USE_COUNT;
failed_1:
port->gs.count--;
return err;
}
static void nb85e_uart_tty_enable_rx_interrupts (void *driver_data)
{
struct nb85e_uart_tty_port *port = driver_data;
nb85e_intc_enable_irq (IRQ_INTSR (port->chan));
}