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arm: asm: dma-mapping: added dma_free_coherent API 

Added dma_free_coherent corresponding to the dma_alloc_coherent in
dma-mapping.h in order to free memory allocated using dma_alloc_coherent.
This API is used in dwc3 driver.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
This commit is contained in:
Kishon Vijay Abraham I 2015-02-23 18:39:56 +05:30 committed by Marek Vasut
parent 027b6103cd
commit 2f06693567
1 changed files with 7 additions and 0 deletions
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7
arch/arm/include/asm/dma-mapping.h
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@ -8,6 +8,8 @@
#ifndef __ASM_ARM_DMA_MAPPING_H
#define __ASM_ARM_DMA_MAPPING_H
#define dma_mapping_error(x, y) 0
enum dma_data_direction {
DMA_BIDIRECTIONAL = 0,
DMA_TO_DEVICE = 1,
@ -20,6 +22,11 @@ static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
return (void *)*handle;
}
static inline void dma_free_coherent(void *addr)
{
free(addr);
}
static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
enum dma_data_direction dir)
{