linux/drivers/tty/serial/8250/8250_dma.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * 8250_dma.c - DMA Engine API support for 8250.c
 *
 * Copyright (C) 2013 Intel Corporation
 */
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/serial_reg.h>
#include <linux/dma-mapping.h>

#include "8250.h"

static void __dma_tx_complete(void *param)
{ … }

static void __dma_rx_complete(struct uart_8250_port *p)
{ … }

static void dma_rx_complete(void *param)
{ … }

int serial8250_tx_dma(struct uart_8250_port *p)
{ … }

int serial8250_rx_dma(struct uart_8250_port *p)
{ … }

void serial8250_rx_dma_flush(struct uart_8250_port *p)
{ … }
EXPORT_SYMBOL_GPL(…);

int serial8250_request_dma(struct uart_8250_port *p)
{ … }
EXPORT_SYMBOL_GPL(…);

void serial8250_release_dma(struct uart_8250_port *p)
{ … }
EXPORT_SYMBOL_GPL(…);