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/* SPDX-License-Identifier: GPL-2.0-only */
/* SPDX-FileCopyrightText: 2012 Marc Kleine-Budde <mkl@pengutronix.de> */
#include <dma.h>
static inline dma_addr_t cpu_to_dma(struct device_d *dev, unsigned long cpu_addr)
{
dma_addr_t dma_addr = cpu_addr;
if (dev)
dma_addr -= dev->dma_offset;
return dma_addr;
}
static inline unsigned long dma_to_cpu(struct device_d *dev, dma_addr_t addr)
{
unsigned long cpu_addr = addr;
if (dev)
cpu_addr += dev->dma_offset;
return cpu_addr;
}
dma_addr_t dma_map_single(struct device_d *dev, void *ptr, size_t size,
enum dma_data_direction dir)
{
unsigned long addr = (unsigned long)ptr;
dma_sync_single_for_device(addr, size, dir);
return cpu_to_dma(dev, addr);
}
void dma_unmap_single(struct device_d *dev, dma_addr_t dma_addr, size_t size,
enum dma_data_direction dir)
{
unsigned long addr = dma_to_cpu(dev, dma_addr);
dma_sync_single_for_cpu(addr, size, dir);
}
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