C++ (Cpp) pl010_stop_tx Examples

Example #1

static void pl010_tx_chars(struct uart_port *port)
{
	struct circ_buf *xmit = &port->info->xmit;
	int count;

	if (port->x_char) {
		writel(port->x_char, port->membase + UART01x_DR);
		port->icount.tx++;
		port->x_char = 0;
		return;
	}
	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
		pl010_stop_tx(port);
		return;
	}

	count = port->fifosize >> 1;
	do {
		writel(xmit->buf[xmit->tail], port->membase + UART01x_DR);
		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
		port->icount.tx++;
		if (uart_circ_empty(xmit))
			break;
	} while (--count > 0);

	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
		uart_write_wakeup(port);

	if (uart_circ_empty(xmit))
		pl010_stop_tx(port);
}

Example #2

File: amba-pl010.c Project: 96boards/wilink8-wlan_wl18xx

static void pl010_tx_chars(struct uart_amba_port *uap)
{
	struct circ_buf *xmit = &uap->port.state->xmit;
	int count;

	if (uap->port.x_char) {
		writel(uap->port.x_char, uap->port.membase + UART01x_DR);
		uap->port.icount.tx++;
		uap->port.x_char = 0;
		return;
	}
	if (uart_circ_empty(xmit) || uart_tx_stopped(&uap->port)) {
		pl010_stop_tx(&uap->port);
		return;
	}

	count = uap->port.fifosize >> 1;
	do {
		writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
		uap->port.icount.tx++;
		if (uart_circ_empty(xmit))
			break;
	} while (--count > 0);

	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
		uart_write_wakeup(&uap->port);

	if (uart_circ_empty(xmit))
		pl010_stop_tx(&uap->port);
}