static void ks8695uart_start_tx(struct uart_port *port)
{
if (!tx_enabled(port)) {
enable_irq(KS8695_IRQ_UART_TX);
tx_enable(port, 1);
}
}
static void ks8695uart_stop_tx(struct uart_port *port)
{
if (tx_enabled(port)) {
disable_irq(KS8695_IRQ_UART_TX);
tx_enable(port, 0);
}
}
static void ks8695uart_stop_tx(struct uart_port *port)
{
if (tx_enabled(port)) {
/* use disable_irq_nosync() and not disable_irq() to avoid self
* imposed deadlock by not waiting for irq handler to end,
* since this ks8695uart_stop_tx() is called from interrupt context.
*/
disable_irq_nosync(KS8695_IRQ_UART_TX);
tx_enable(port, 0);
}
}
static int ks8695uart_startup(struct uart_port *port)
{
int retval;
set_irq_flags(KS8695_IRQ_UART_TX, IRQF_VALID | IRQF_NOAUTOEN);
tx_enable(port, 0);
rx_enable(port, 1);
ms_enable(port, 1);
/*
* Allocate the IRQ
*/
retval = request_irq(KS8695_IRQ_UART_TX, ks8695uart_tx_chars, IRQF_DISABLED, "UART TX", port);
if (retval)
goto err_tx;
retval = request_irq(KS8695_IRQ_UART_RX, ks8695uart_rx_chars, IRQF_DISABLED, "UART RX", port);
if (retval)
goto err_rx;
retval = request_irq(KS8695_IRQ_UART_LINE_STATUS, ks8695uart_rx_chars, IRQF_DISABLED, "UART LineStatus", port);
if (retval)
goto err_ls;
retval = request_irq(KS8695_IRQ_UART_MODEM_STATUS, ks8695uart_modem_status, IRQF_DISABLED, "UART ModemStatus", port);
if (retval)
goto err_ms;
return 0;
err_ms:
free_irq(KS8695_IRQ_UART_LINE_STATUS, port);
err_ls:
free_irq(KS8695_IRQ_UART_RX, port);
err_rx:
free_irq(KS8695_IRQ_UART_TX, port);
err_tx:
return retval;
}
void
call_transmit_if_needed (void)
{
NVIC_DisableIRQ (TIMER_32_0_IRQn);
if (transmit_call) {
DBG (DBG_LEVEL_INFO, "Transmitting station ID (%s)", CALL_STRING);
tx_enable ();
while (!tx_is_ready ());
morse_send (CALL_STRING, strlen (CALL_STRING));
systick_delay (CALL_POST_DELAY_MS);
tx_disable ();
transmit_call = false;
Chip_TIMER_Reset (LPC_TIMER32_0);
Chip_TIMER_ClearMatch(LPC_TIMER32_0, 0);
Chip_TIMER_SetMatch (LPC_TIMER32_0, 0, CALL_INTERVAL_SEC);
NVIC_ClearPendingIRQ (TIMER_32_0_IRQn);
}
NVIC_EnableIRQ (TIMER_32_0_IRQn);
}
static void tx_start(struct uart_regs *uart, int ints)
{
if(ints)
tx_enable(uart);
}