static irqreturn_t sci_er_interrupt(int irq, void *ptr)
{
struct uart_port *port = ptr;
/* Handle errors */
if (port->type == PORT_SCI) {
if (sci_handle_errors(port)) {
/* discard character in rx buffer */
sci_in(port, SCxSR);
sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
}
} else {
#if defined(SCIF_ORER)
if((sci_in(port, SCLSR) & SCIF_ORER) != 0) {
struct tty_struct *tty = port->info->port.tty;
sci_out(port, SCLSR, 0);
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
tty_flip_buffer_push(tty);
pr_debug("scif: overrun error\n");
}
#endif
sci_rx_interrupt(irq, ptr);
}
sci_out(port, SCxSR, SCxSR_ERROR_CLEAR(port));
/* Kick the transmission */
sci_tx_interrupt(irq, ptr);
return IRQ_HANDLED;
}
static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr)
{
unsigned short ssr_status, scr_status;
struct uart_port *port = ptr;
ssr_status = sci_in(port,SCxSR);
scr_status = sci_in(port,SCSCR);
/* Tx Interrupt */
if ((ssr_status & 0x0020) && (scr_status & 0x0080))
sci_tx_interrupt(irq, ptr);
/* Rx Interrupt */
if ((ssr_status & 0x0002) && (scr_status & 0x0040))
sci_rx_interrupt(irq, ptr);
/* Error Interrupt */
if ((ssr_status & 0x0080) && (scr_status & 0x0400))
sci_er_interrupt(irq, ptr);
/* Break Interrupt */
if ((ssr_status & 0x0010) && (scr_status & 0x0200))
sci_br_interrupt(irq, ptr);
return IRQ_HANDLED;
}
static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr)
{
unsigned short ssr_status, scr_status;
struct uart_port *port = ptr;
irqreturn_t ret = IRQ_NONE;
ssr_status = sci_in(port,SCxSR);
scr_status = sci_in(port,SCSCR);
/* Tx Interrupt */
if ((ssr_status & 0x0020) && (scr_status & SCI_CTRL_FLAGS_TIE))
ret = sci_tx_interrupt(irq, ptr);
/* Rx Interrupt */
if ((ssr_status & 0x0002) && (scr_status & SCI_CTRL_FLAGS_RIE))
ret = sci_rx_interrupt(irq, ptr);
/* Error Interrupt */
if ((ssr_status & 0x0080) && (scr_status & SCI_CTRL_FLAGS_REIE))
ret = sci_er_interrupt(irq, ptr);
/* Break Interrupt */
if ((ssr_status & 0x0010) && (scr_status & SCI_CTRL_FLAGS_REIE))
ret = sci_br_interrupt(irq, ptr);
return ret;
}