add CMA heap
New heap type ION_HEAP_TYPE_DMA where allocation is done with dma_alloc_coherent API.
device coherent_dma_mask must be set to DMA_BIT_MASK(32).
ion_platform_heap private field is used to retrieve the device linked to CMA,
if NULL the default CMA area is used.
ion_cma_get_sgtable is a copy of dma_common_get_sgtable function which should
be in kernel 3.5
Change-Id: I9ae54a3a021cb3513c2b0e8c58b69f3ae118561b
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
[lauraa: Fix context in ion_priv.h/ion.h and omit Makefile change for now]
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
diff --git a/drivers/gpu/ion/ion_priv.h b/drivers/gpu/ion/ion_priv.h
index b01e572..bfd5ebd 100644
--- a/drivers/gpu/ion/ion_priv.h
+++ b/drivers/gpu/ion/ion_priv.h
@@ -256,6 +256,10 @@
void ion_carveout_free(struct ion_heap *heap, ion_phys_addr_t addr,
unsigned long size);
+#ifdef CONFIG_CMA
+struct ion_heap *ion_cma_heap_create(struct ion_platform_heap *);
+void ion_cma_heap_destroy(struct ion_heap *);
+#endif
struct ion_heap *msm_get_contiguous_heap(void);
/**