[U-Boot] [u-boot 13/40] arm: asm: dma-mapping: added dma_free_coherent API

Lukasz Majewski
2015-02-16T10:26:52Z

Hi Kishon,

> 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>
> ---
> arch/arm/include/asm/dma-mapping.h | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/arch/arm/include/asm/dma-mapping.h
> b/arch/arm/include/asm/dma-mapping.h index 14f00efd2..a5821f5 100644
> --- a/arch/arm/include/asm/dma-mapping.h
> +++ b/arch/arm/include/asm/dma-mapping.h
> @@ -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)
> {

Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>

--
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group