2011-03-25 15:52:11

by Wolfram Sang

Subject: [PATCH 2/3] ASoC: imx: fix burstsize for DMA

SSI counts in words, the DMA engine in bytes. (Wrong) factor got removed
in bf974a0 (ASoC i.MX: switch to new DMA api).

Signed-off-by: Wolfram Sang <[email protected]>
---
sound/soc/imx/imx-pcm-dma-mx2.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/imx/imx-pcm-dma-mx2.c b/sound/soc/imx/imx-pcm-dma-mx2.c
index b2ed764..aab7765 100644
--- a/sound/soc/imx/imx-pcm-dma-mx2.c
+++ b/sound/soc/imx/imx-pcm-dma-mx2.c
@@ -110,12 +110,12 @@ static int imx_ssi_dma_alloc(struct snd_pcm_substream *substream,
slave_config.direction = DMA_TO_DEVICE;
slave_config.dst_addr = dma_params->dma_addr;
slave_config.dst_addr_width = buswidth;
- slave_config.dst_maxburst = dma_params->burstsize;
+ slave_config.dst_maxburst = dma_params->burstsize * buswidth;
} else {
slave_config.direction = DMA_FROM_DEVICE;
slave_config.src_addr = dma_params->dma_addr;
slave_config.src_addr_width = buswidth;
- slave_config.src_maxburst = dma_params->burstsize;
+ slave_config.src_maxburst = dma_params->burstsize * buswidth;
}

ret = dmaengine_slave_config(iprtd->dma_chan, &slave_config);
--
1.7.2.5

2011-03-26 11:42:29

by Liam Girdwood

Subject: Re: [PATCH 2/3] ASoC: imx: fix burstsize for DMA

On Fri, 2011-03-25 at 16:51 +0100, Wolfram Sang wrote:
> SSI counts in words, the DMA engine in bytes. (Wrong) factor got removed
> in bf974a0 (ASoC i.MX: switch to new DMA api).
>
> Signed-off-by: Wolfram Sang <[email protected]>

Acked-by: Liam Girdwood <[email protected]>