[alsa-devel] [RFC 1/2] ASoC: imx-ssi: use dma_writecombine consistently

Wolfram Sang w.sang at pengutronix.de
Thu Aug 25 15:54:55 CEST 2011

If the channel is allocated as writecombine, then mmaping it should also
use writecombine. Also, add a proper device for the call. Ported from a
similar fix for mach-mxs.

Signed-off-by: Wolfram Sang <w.sang at pengutronix.de>
Cc: Sascha Hauer <s.hauer at pengutronix.de>
Cc: Liam Girdwood <lrg at ti.com>
Cc: Mark Brown <broonie at opensource.wolfsonmicro.com>
 sound/soc/imx/imx-ssi.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/imx/imx-ssi.c b/sound/soc/imx/imx-ssi.c
index 10a8e27..3b8d5cd 100644
--- a/sound/soc/imx/imx-ssi.c
+++ b/sound/soc/imx/imx-ssi.c
@@ -357,8 +357,8 @@ int snd_imx_pcm_mmap(struct snd_pcm_substream *substream,
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	int ret;
-	ret = dma_mmap_coherent(NULL, vma, runtime->dma_area,
-			runtime->dma_addr, runtime->dma_bytes);
+	ret = dma_mmap_writecombine(substream->pcm->card->dev, vma,
+		runtime->dma_area, runtime->dma_addr, runtime->dma_bytes);
 	pr_debug("%s: ret: %d %p 0x%08x 0x%08x\n", __func__, ret,

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