1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * Stelian Pop <stelian@popies.net>
5 * Lead Tech Design <www.leadtechdesign.com>
7 #ifndef __ASM_ARM_DMA_MAPPING_H
8 #define __ASM_ARM_DMA_MAPPING_H
10 #include <linux/dma-direction.h>
12 #define dma_mapping_error(x, y) 0
14 static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
16 *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
17 return (void *)*handle;
20 static inline void dma_free_coherent(void *addr)
25 static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
26 enum dma_data_direction dir)
28 return (unsigned long)vaddr;
31 static inline void dma_unmap_single(volatile void *vaddr, size_t len,
36 #endif /* __ASM_ARM_DMA_MAPPING_H */