コード例 #1
0
static void ssauart_set_mctrl (struct uart_port *port, u_int mctrl)
{
#if 0
   unsigned int mcr = 0;

   if (mctrl & TIOCM_DTR) mcr |= (MCR_DTR);
   if (mctrl & TIOCM_RTS) mcr |= (MCR_RTS);

   UART_PUT_MCR(port, mcr);         /* DTR and RTS set as required, all other bits cleared */
#endif
}
コード例 #2
0
static void uart00_break_ctl(struct uart_port *port, int break_state)
{
	unsigned int mcr;

	mcr = UART_GET_MCR(port);
	if (break_state == -1)
		mcr |= UART_MCR_BR_MSK;
	else
		mcr &= ~UART_MCR_BR_MSK;
	UART_PUT_MCR(port, mcr);
}
コード例 #3
0
static void uart00_set_mctrl(struct uart_port *port, u_int mctrl)
{
	unsigned char mcr = 0;

	if (mctrl & TIOCM_RTS)
		mcr |= UART_MCR_RTS_MSK;
	if (mctrl & TIOCM_DTR)
		mcr |= UART_MCR_DTR_MSK;
	if (mctrl & TIOCM_LOOP)
		mcr |= UART_MCR_LB_MSK;

	UART_PUT_MCR(port, mcr);
}
コード例 #4
0
ファイル: uart00.c プロジェクト: gnensis/linux-2.6.15
static void uart00_break_ctl(struct uart_port *port, int break_state)
{
	unsigned long flags;
	unsigned int mcr;

	spin_lock_irqsave(&port->lock, flags);
	mcr = UART_GET_MCR(port);
	if (break_state == -1)
		mcr |= UART_MCR_BR_MSK;
	else
		mcr &= ~UART_MCR_BR_MSK;
	UART_PUT_MCR(port, mcr);
	spin_unlock_irqrestore(&port->lock, flags);
}
コード例 #5
0
ファイル: uart00.c プロジェクト: gnensis/linux-2.6.15
static void uart00_shutdown(struct uart_port *port)
{
	/*
	 * disable all interrupts, disable the port
	 */
	UART_PUT_IEC(port, 0xff);

	/* disable break condition and fifos */
	UART_PUT_MCR(port, UART_GET_MCR(port) &~UART_MCR_BR_MSK);

        /*
	 * Free the interrupt
	 */
	free_irq(port->irq, port);
}
コード例 #6
0
ファイル: serial_ks8695.c プロジェクト: AppEngine/linux-2.6
static void ks8695uart_set_mctrl(struct uart_port *port, u_int mctrl)
{
	unsigned int mcr;

	mcr = UART_GET_MCR(port);
	if (mctrl & TIOCM_RTS)
		mcr |= URMC_URRTS;
	else
		mcr &= ~URMC_URRTS;

	if (mctrl & TIOCM_DTR)
		mcr |= URMC_URDTR;
	else
		mcr &= ~URMC_URDTR;

	UART_PUT_MCR(port, mcr);
}
コード例 #7
0
static void ambauart_set_mctrl(struct uart_port *port, u_int mctrl)
{
	unsigned int mcr;

	mcr = UART_GET_MCR(port);
	if (mctrl & TIOCM_RTS)
		mcr |= KS8695_UART_MODEMC_RTS;
	else
		mcr &= ~KS8695_UART_MODEMC_RTS;

	if (mctrl & TIOCM_DTR)
		mcr |= KS8695_UART_MODEMC_DTR;
	else
		mcr &= ~KS8695_UART_MODEMC_DTR;

	UART_PUT_MCR(port, mcr);
}
コード例 #8
0
static int bfin_serial_startup(struct uart_port *port)
{
	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;

#ifdef CONFIG_SERIAL_BFIN_DMA
	dma_addr_t dma_handle;

	if (request_dma(uart->rx_dma_channel, "BFIN_UART_RX") < 0) {
		printk(KERN_NOTICE "Unable to attach Blackfin UART RX DMA channel\n");
		return -EBUSY;
	}

	if (request_dma(uart->tx_dma_channel, "BFIN_UART_TX") < 0) {
		printk(KERN_NOTICE "Unable to attach Blackfin UART TX DMA channel\n");
		free_dma(uart->rx_dma_channel);
		return -EBUSY;
	}

	set_dma_callback(uart->rx_dma_channel, bfin_serial_dma_rx_int, uart);
	set_dma_callback(uart->tx_dma_channel, bfin_serial_dma_tx_int, uart);

	uart->rx_dma_buf.buf = (unsigned char *)dma_alloc_coherent(NULL, PAGE_SIZE, &dma_handle, GFP_DMA);
	uart->rx_dma_buf.head = 0;
	uart->rx_dma_buf.tail = 0;
	uart->rx_dma_nrows = 0;

	set_dma_config(uart->rx_dma_channel,
		set_bfin_dma_config(DIR_WRITE, DMA_FLOW_AUTO,
				INTR_ON_ROW, DIMENSION_2D,
				DATA_SIZE_8,
				DMA_SYNC_RESTART));
	set_dma_x_count(uart->rx_dma_channel, DMA_RX_XCOUNT);
	set_dma_x_modify(uart->rx_dma_channel, 1);
	set_dma_y_count(uart->rx_dma_channel, DMA_RX_YCOUNT);
	set_dma_y_modify(uart->rx_dma_channel, 1);
	set_dma_start_addr(uart->rx_dma_channel, (unsigned long)uart->rx_dma_buf.buf);
	enable_dma(uart->rx_dma_channel);

	uart->rx_dma_timer.data = (unsigned long)(uart);
	uart->rx_dma_timer.function = (void *)bfin_serial_rx_dma_timeout;
	uart->rx_dma_timer.expires = jiffies + DMA_RX_FLUSH_JIFFIES;
	add_timer(&(uart->rx_dma_timer));
#else
# if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
	if (kgdboc_port_line == uart->port.line && kgdboc_break_enabled)
		kgdboc_break_enabled = 0;
	else {
# endif
	if (request_irq(uart->port.irq, bfin_serial_rx_int, IRQF_DISABLED,
	     "BFIN_UART_RX", uart)) {
		printk(KERN_NOTICE "Unable to attach BlackFin UART RX interrupt\n");
		return -EBUSY;
	}

	if (request_irq
	    (uart->port.irq+1, bfin_serial_tx_int, IRQF_DISABLED,
	     "BFIN_UART_TX", uart)) {
		printk(KERN_NOTICE "Unable to attach BlackFin UART TX interrupt\n");
		free_irq(uart->port.irq, uart);
		return -EBUSY;
	}

# ifdef CONFIG_BF54x
	{
		/*
		 * UART2 and UART3 on BF548 share interrupt PINs and DMA
		 * controllers with SPORT2 and SPORT3. UART rx and tx
		 * interrupts are generated in PIO mode only when configure
		 * their peripheral mapping registers properly, which means
		 * request corresponding DMA channels in PIO mode as well.
		 */
		unsigned uart_dma_ch_rx, uart_dma_ch_tx;

		switch (uart->port.irq) {
		case IRQ_UART3_RX:
			uart_dma_ch_rx = CH_UART3_RX;
			uart_dma_ch_tx = CH_UART3_TX;
			break;
		case IRQ_UART2_RX:
			uart_dma_ch_rx = CH_UART2_RX;
			uart_dma_ch_tx = CH_UART2_TX;
			break;
		default:
			uart_dma_ch_rx = uart_dma_ch_tx = 0;
			break;
		};

		if (uart_dma_ch_rx &&
			request_dma(uart_dma_ch_rx, "BFIN_UART_RX") < 0) {
			printk(KERN_NOTICE"Fail to attach UART interrupt\n");
			free_irq(uart->port.irq, uart);
			free_irq(uart->port.irq + 1, uart);
			return -EBUSY;
		}
		if (uart_dma_ch_tx &&
			request_dma(uart_dma_ch_tx, "BFIN_UART_TX") < 0) {
			printk(KERN_NOTICE "Fail to attach UART interrupt\n");
			free_dma(uart_dma_ch_rx);
			free_irq(uart->port.irq, uart);
			free_irq(uart->port.irq + 1, uart);
			return -EBUSY;
		}
	}
# endif
# if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
	}
# endif
#endif

#ifdef CONFIG_SERIAL_BFIN_CTSRTS
	if (uart->cts_pin >= 0) {
		if (request_irq(gpio_to_irq(uart->cts_pin),
			bfin_serial_mctrl_cts_int,
			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
			IRQF_DISABLED, "BFIN_UART_CTS", uart)) {
			uart->cts_pin = -1;
			pr_info("Unable to attach BlackFin UART CTS interrupt. So, disable it.\n");
		}
	}
	if (uart->rts_pin >= 0) {
		gpio_direction_output(uart->rts_pin, 0);
	}
#endif
#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
	if (uart->cts_pin >= 0 && request_irq(uart->status_irq,
		bfin_serial_mctrl_cts_int,
		IRQF_DISABLED, "BFIN_UART_MODEM_STATUS", uart)) {
		uart->cts_pin = -1;
		pr_info("Unable to attach BlackFin UART Modem Status interrupt.\n");
	}

	/* CTS RTS PINs are negative assertive. */
	UART_PUT_MCR(uart, ACTS);
	UART_SET_IER(uart, EDSSI);
#endif

	UART_SET_IER(uart, ERBFI);
	return 0;
}