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-rw-r--r--include/sound/memalloc.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/sound/memalloc.h b/include/sound/memalloc.h
index 7ccce94a5255..c42506212649 100644
--- a/include/sound/memalloc.h
+++ b/include/sound/memalloc.h
@@ -47,7 +47,11 @@ struct snd_dma_device {
47#define SNDRV_DMA_TYPE_UNKNOWN 0 /* not defined */ 47#define SNDRV_DMA_TYPE_UNKNOWN 0 /* not defined */
48#define SNDRV_DMA_TYPE_CONTINUOUS 1 /* continuous no-DMA memory */ 48#define SNDRV_DMA_TYPE_CONTINUOUS 1 /* continuous no-DMA memory */
49#define SNDRV_DMA_TYPE_DEV 2 /* generic device continuous */ 49#define SNDRV_DMA_TYPE_DEV 2 /* generic device continuous */
50#ifdef CONFIG_SND_DMA_SGBUF
50#define SNDRV_DMA_TYPE_DEV_SG 3 /* generic device SG-buffer */ 51#define SNDRV_DMA_TYPE_DEV_SG 3 /* generic device SG-buffer */
52#else
53#define SNDRV_DMA_TYPE_DEV_SG SNDRV_DMA_TYPE_DEV /* no SG-buf support */
54#endif
51 55
52/* 56/*
53 * info for buffer allocation 57 * info for buffer allocation
@@ -60,6 +64,7 @@ struct snd_dma_buffer {
60 void *private_data; /* private for allocator; don't touch */ 64 void *private_data; /* private for allocator; don't touch */
61}; 65};
62 66
67#ifdef CONFIG_SND_DMA_SGBUF
63/* 68/*
64 * Scatter-Gather generic device pages 69 * Scatter-Gather generic device pages
65 */ 70 */
@@ -107,6 +112,7 @@ static inline void *snd_sgbuf_get_ptr(struct snd_sg_buf *sgbuf, size_t offset)
107{ 112{
108 return sgbuf->table[offset >> PAGE_SHIFT].buf + offset % PAGE_SIZE; 113 return sgbuf->table[offset >> PAGE_SHIFT].buf + offset % PAGE_SIZE;
109} 114}
115#endif /* CONFIG_SND_DMA_SGBUF */
110 116
111/* allocate/release a buffer */ 117/* allocate/release a buffer */
112int snd_dma_alloc_pages(int type, struct device *dev, size_t size, 118int snd_dma_alloc_pages(int type, struct device *dev, size_t size,