tree cd833ec1ae6f510153ffddb3ff3e22d2443b832d
parent c16fa4f2ad19908a47c63d8fa436a1178438c7e7
author Marek Szyprowski <m.szyprowski@samsung.com> 1332945387 +0200
committer Marek Szyprowski <m.szyprowski@samsung.com> 1332945387 +0200

common: dma-mapping: introduce generic alloc() and free() methods

Introduce new generic alloc and free methods with attributes argument.

Existing alloc_coherent and free_coherent can be implemented on top of the
new calls with NULL attributes argument. Later also dma_alloc_non_coherent
can be implemented using DMA_ATTR_NONCOHERENT attribute as well as
dma_alloc_writecombine with separate DMA_ATTR_WRITECOMBINE attribute.

This way the drivers will get more generic, platform independent way of
allocating dma buffers with specific parameters.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: David Gibson <david@gibson.dropbear.ud.au>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>