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ASoC: rockchip: spdif: increase dma burst size

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increase dma burst size from 4 to 16 to optimize dma transfer.

Change-Id: I1a9112e6b89ed1f29d24a3e4b5f42bf4201a9e71
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
This commit is contained in:
Sugar Zhang
2015-09-02 16:46:36 +08:00
parent f9cc39ca0e
commit e1e8d8f982
1 changed files with 4 additions and 1 deletions
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5
sound/soc/rockchip/rk_spdif.c
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@@ -135,6 +135,9 @@
#define INTCR_SDBEIE_ENABLE (0x1 << 4)
#define INTCR_SDBEIE_MASK (0x1 << 4)
/* size * width: 16*4 = 64 bytes */
#define SPDIF_DMA_BURST_SIZE (16)
struct rockchip_spdif_info {
spinlock_t lock;/*lock parmeter setting.*/
void __iomem *regs;
@@ -451,7 +454,7 @@ static int spdif_probe(struct platform_device *pdev)
spdif->dma_playback.addr = mem_res->start + SMPDR;
spdif->dma_playback.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
spdif->dma_playback.maxburst = 4;
spdif->dma_playback.maxburst = SPDIF_DMA_BURST_SIZE;
ret = snd_soc_register_component(&pdev->dev,
&rockchip_spdif_component,