C++ (Cpp) sirfsoc_uart_insert_rx_buf_to_tty Examples

Example #1

File: sirfsoc_uart.c Project: AnadoluPanteri/kernel-plus-harmattan

static void sirfsoc_rx_tmo_process_tl(unsigned long param)
{
	struct sirfsoc_uart_port *sirfport = (struct sirfsoc_uart_port *)param;
	struct uart_port *port = &sirfport->port;
	struct sirfsoc_register *ureg = &sirfport->uart_reg->uart_reg;
	struct sirfsoc_int_en *uint_en = &sirfport->uart_reg->uart_int_en;
	struct sirfsoc_int_status *uint_st = &sirfport->uart_reg->uart_int_st;
	unsigned int count;
	unsigned long flags;

	spin_lock_irqsave(&sirfport->rx_lock, flags);
	while (sirfport->rx_completed != sirfport->rx_issued) {
		sirfsoc_uart_insert_rx_buf_to_tty(sirfport,
					SIRFSOC_RX_DMA_BUF_SIZE);
		sirfport->rx_completed++;
		sirfport->rx_completed %= SIRFSOC_RX_LOOP_BUF_CNT;
	}
	count = CIRC_CNT(sirfport->rx_dma_items[sirfport->rx_issued].xmit.head,
		sirfport->rx_dma_items[sirfport->rx_issued].xmit.tail,
		SIRFSOC_RX_DMA_BUF_SIZE);
	if (count > 0)
		sirfsoc_uart_insert_rx_buf_to_tty(sirfport, count);
	wr_regl(port, ureg->sirfsoc_rx_dma_io_ctrl,
			rd_regl(port, ureg->sirfsoc_rx_dma_io_ctrl) |
			SIRFUART_IO_MODE);
	sirfsoc_uart_pio_rx_chars(port, 4 - sirfport->rx_io_count);
	spin_unlock_irqrestore(&sirfport->rx_lock, flags);
	if (sirfport->rx_io_count == 4) {
		spin_lock_irqsave(&sirfport->rx_lock, flags);
		sirfport->rx_io_count = 0;
		wr_regl(port, ureg->sirfsoc_int_st_reg,
				uint_st->sirfsoc_rx_done);
		if (!sirfport->is_marco)
			wr_regl(port, ureg->sirfsoc_int_en_reg,
				rd_regl(port, ureg->sirfsoc_int_en_reg) &
				~(uint_en->sirfsoc_rx_done_en));
		else
			wr_regl(port, SIRFUART_INT_EN_CLR,
					uint_en->sirfsoc_rx_done_en);
		spin_unlock_irqrestore(&sirfport->rx_lock, flags);

		sirfsoc_uart_start_next_rx_dma(port);
	} else {
		spin_lock_irqsave(&sirfport->rx_lock, flags);
		wr_regl(port, ureg->sirfsoc_int_st_reg,
				uint_st->sirfsoc_rx_done);
		if (!sirfport->is_marco)
			wr_regl(port, ureg->sirfsoc_int_en_reg,
				rd_regl(port, ureg->sirfsoc_int_en_reg) |
				(uint_en->sirfsoc_rx_done_en));
		else
			wr_regl(port, ureg->sirfsoc_int_en_reg,
					uint_en->sirfsoc_rx_done_en);
		spin_unlock_irqrestore(&sirfport->rx_lock, flags);
	}
}

Example #2

File: sirfsoc_uart.c Project: AnadoluPanteri/kernel-plus-harmattan

static void sirfsoc_uart_rx_dma_complete_tl(unsigned long param)
{
	struct sirfsoc_uart_port *sirfport = (struct sirfsoc_uart_port *)param;
	struct uart_port *port = &sirfport->port;
	struct sirfsoc_register *ureg = &sirfport->uart_reg->uart_reg;
	struct sirfsoc_int_en *uint_en = &sirfport->uart_reg->uart_int_en;
	unsigned long flags;
	spin_lock_irqsave(&sirfport->rx_lock, flags);
	while (sirfport->rx_completed != sirfport->rx_issued) {
		sirfsoc_uart_insert_rx_buf_to_tty(sirfport,
					SIRFSOC_RX_DMA_BUF_SIZE);
		if (rd_regl(port, ureg->sirfsoc_int_en_reg) &
				uint_en->sirfsoc_rx_timeout_en)
			sirfsoc_rx_submit_one_dma_desc(port,
					sirfport->rx_completed++);
		else
			sirfport->rx_completed++;
		sirfport->rx_completed %= SIRFSOC_RX_LOOP_BUF_CNT;
	}
	spin_unlock_irqrestore(&sirfport->rx_lock, flags);
}

Example #3

File: sirfsoc_uart.c Project: 19Dan01/linux

static void sirfsoc_uart_rx_dma_complete_tl(unsigned long param)
{
	struct sirfsoc_uart_port *sirfport = (struct sirfsoc_uart_port *)param;
	struct uart_port *port = &sirfport->port;
	struct sirfsoc_register *ureg = &sirfport->uart_reg->uart_reg;
	struct sirfsoc_int_en *uint_en = &sirfport->uart_reg->uart_int_en;
	unsigned long flags;
	struct dma_tx_state tx_state;
	spin_lock_irqsave(&port->lock, flags);
	while (DMA_COMPLETE == dmaengine_tx_status(sirfport->rx_dma_chan,
			sirfport->rx_dma_items[sirfport->rx_completed].cookie, &tx_state)) {
		sirfsoc_uart_insert_rx_buf_to_tty(sirfport,
					SIRFSOC_RX_DMA_BUF_SIZE);
		if (rd_regl(port, ureg->sirfsoc_int_en_reg) &
				uint_en->sirfsoc_rx_timeout_en)
			sirfsoc_rx_submit_one_dma_desc(port,
					sirfport->rx_completed++);
		else
			sirfport->rx_completed++;
		sirfport->rx_completed %= SIRFSOC_RX_LOOP_BUF_CNT;
	}
	spin_unlock_irqrestore(&port->lock, flags);
	tty_flip_buffer_push(&port->state->port);
}