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>
diff --git a/drivers/gpu/ion/ion_heap.c b/drivers/gpu/ion/ion_heap.c
index 0684cae..0670468 100644
--- a/drivers/gpu/ion/ion_heap.c
+++ b/drivers/gpu/ion/ion_heap.c
@@ -40,6 +40,11 @@
case ION_HEAP_TYPE_CP:
heap = ion_cp_heap_create(heap_data);
break;
+#ifdef CONFIG_CMA
+ case ION_HEAP_TYPE_DMA:
+ heap = ion_cma_heap_create(heap_data);
+ break;
+#endif
default:
pr_err("%s: Invalid heap type %d\n", __func__,
heap_data->type);
@@ -80,6 +85,11 @@
case ION_HEAP_TYPE_CP:
ion_cp_heap_destroy(heap);
break;
+#ifdef CONFIG_CMA
+ case ION_HEAP_TYPE_DMA:
+ ion_cma_heap_destroy(heap);
+ break;
+#endif
default:
pr_err("%s: Invalid heap type %d\n", __func__,
heap->type);