C++ (Cpp) bfin_serial_dma_tx_chars Exemples

Exemple #1

/*
 * port is locked and interrupts are disabled
 */
static void bfin_serial_start_tx(struct uart_port *port)
{
	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
	struct tty_struct *tty = uart->port.state->port.tty;

#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
	if (uart->scts && !(bfin_serial_get_mctrl(&uart->port) & TIOCM_CTS)) {
		uart->scts = 0;
		uart_handle_cts_change(&uart->port, uart->scts);
	}
#endif

	/*
	 * To avoid losting RX interrupt, we reset IR function
	 * before sending data.
	 */
	if (tty->termios->c_line == N_IRDA)
		bfin_serial_reset_irda(port);

#ifdef CONFIG_SERIAL_BFIN_DMA
	if (uart->tx_done)
		bfin_serial_dma_tx_chars(uart);
#else
	UART_SET_IER(uart, ETBEI);
	bfin_serial_tx_chars(uart);
#endif
}

Exemple #2

static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
{
	struct bfin_serial_port *uart = dev_id;
	struct circ_buf *xmit = &uart->port.state->xmit;

#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
	if (uart->scts && !(bfin_serial_get_mctrl(&uart->port)&TIOCM_CTS)) {
		uart->scts = 0;
		uart_handle_cts_change(&uart->port, uart->scts);
	}
#endif

	spin_lock(&uart->port.lock);
	if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
		disable_dma(uart->tx_dma_channel);
		clear_dma_irqstat(uart->tx_dma_channel);
		/* Anomaly notes:
		 *  05000215 -	we always clear ETBEI within last UART TX
		 *		interrupt to end a string. It is always set
		 *		when start a new tx.
		 */
		UART_CLEAR_IER(uart, ETBEI);
		xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
		uart->port.icount.tx += uart->tx_count;

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

		bfin_serial_dma_tx_chars(uart);
	}

	spin_unlock(&uart->port.lock);
	return IRQ_HANDLED;
}

Exemple #3

Fichier : bfin_5xx.c Projet : duanyujun/androidgoldfish

static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
{
	struct bfin_serial_port *uart = dev_id;
	struct circ_buf *xmit = &uart->port.info->xmit;

#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
	if (uart->scts && !(bfin_serial_get_mctrl(&uart->port)&TIOCM_CTS)) {
		uart->scts = 0;
		uart_handle_cts_change(&uart->port, uart->scts);
	}
#endif

	spin_lock(&uart->port.lock);
	if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
		disable_dma(uart->tx_dma_channel);
		clear_dma_irqstat(uart->tx_dma_channel);
		UART_CLEAR_IER(uart, ETBEI);
		xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
		uart->port.icount.tx += uart->tx_count;

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

		bfin_serial_dma_tx_chars(uart);
	}

	spin_unlock(&uart->port.lock);
	return IRQ_HANDLED;
}

Exemple #4

Fichier : bfin_5xx.c Projet : johnny/CobraDroidBeta

/*
 * port is locked and interrupts are disabled
 */
static void bfin_serial_start_tx(struct uart_port *port)
{
	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
	struct tty_struct *tty = uart->port.info->port.tty;

	/*
	 * To avoid losting RX interrupt, we reset IR function
	 * before sending data.
	 */
	if (tty->termios->c_line == N_IRDA)
		bfin_serial_reset_irda(port);

#ifdef CONFIG_SERIAL_BFIN_DMA
	if (uart->tx_done)
		bfin_serial_dma_tx_chars(uart);
#else
	UART_SET_IER(uart, ETBEI);
	bfin_serial_tx_chars(uart);
#endif
}

Exemple #5

Fichier : bfin_5xx.c Projet : johnny/CobraDroidBeta

static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
{
	struct bfin_serial_port *uart = dev_id;
	struct circ_buf *xmit = &uart->port.info->xmit;

	spin_lock(&uart->port.lock);
	if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
		disable_dma(uart->tx_dma_channel);
		clear_dma_irqstat(uart->tx_dma_channel);
		UART_CLEAR_IER(uart, ETBEI);
		xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
		uart->port.icount.tx += uart->tx_count;

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

		bfin_serial_dma_tx_chars(uart);
	}

	spin_unlock(&uart->port.lock);
	return IRQ_HANDLED;
}