linux/drivers/spi/spi-pxa2xx-dma.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * PXA2xx SPI DMA engine support.
 *
 * Copyright (C) 2013, 2021 Intel Corporation
 * Author: Mika Westerberg <[email protected]>
 */

#include <linux/atomic.h>
#include <linux/dev_printk.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
#include <linux/errno.h>
#include <linux/irqreturn.h>
#include <linux/scatterlist.h>
#include <linux/string.h>
#include <linux/types.h>

#include <linux/spi/spi.h>

#include "spi-pxa2xx.h"

struct device;

static void pxa2xx_spi_dma_transfer_complete(struct driver_data *drv_data,
					     bool error)
{ … }

static void pxa2xx_spi_dma_callback(void *data)
{ … }

static struct dma_async_tx_descriptor *
pxa2xx_spi_dma_prepare_one(struct driver_data *drv_data,
			   enum dma_transfer_direction dir,
			   struct spi_transfer *xfer)
{ … }

irqreturn_t pxa2xx_spi_dma_transfer(struct driver_data *drv_data)
{ … }

int pxa2xx_spi_dma_prepare(struct driver_data *drv_data,
			   struct spi_transfer *xfer)
{ … }

void pxa2xx_spi_dma_start(struct driver_data *drv_data)
{ … }

void pxa2xx_spi_dma_stop(struct driver_data *drv_data)
{ … }

int pxa2xx_spi_dma_setup(struct driver_data *drv_data)
{ … }

void pxa2xx_spi_dma_release(struct driver_data *drv_data)
{ … }