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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2012-05-28 23:29:36 -0700
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-06-03 13:06:39 +0100
commit5514efdfe0384576ef38c66b1672b6826696fbf3 (patch)
tree8aa4471857c197e6cac672d19ea1402d0d405bae /sound/soc/sh
parent01a0c1139c2bd075d005253093e7060022c5d0cb (diff)
ASoC: fsi: use dmaengine helper functions
This patch used dmaengine helper functions instead of using hand setting. And reduced local variables Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/sh')
-rw-r--r--sound/soc/sh/fsi.c19
1 files changed, 4 insertions, 15 deletions
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 2ef98536f1da..fcaa6b8abb0c 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -1089,13 +1089,10 @@ static void fsi_dma_do_tasklet(unsigned long data)
{
struct fsi_stream *io = (struct fsi_stream *)data;
struct fsi_priv *fsi = fsi_stream_to_priv(io);
- struct dma_chan *chan;
struct snd_soc_dai *dai;
struct dma_async_tx_descriptor *desc;
- struct scatterlist sg;
struct snd_pcm_runtime *runtime;
enum dma_data_direction dir;
- dma_cookie_t cookie;
int is_play = fsi_stream_is_play(fsi, io);
int len;
dma_addr_t buf;
@@ -1104,7 +1101,6 @@ static void fsi_dma_do_tasklet(unsigned long data)
return;
dai = fsi_get_dai(io->substream);
- chan = io->chan;
runtime = io->substream->runtime;
dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
len = samples_to_bytes(runtime, io->period_samples);
@@ -1112,14 +1108,8 @@ static void fsi_dma_do_tasklet(unsigned long data)
dma_sync_single_for_device(dai->dev, buf, len, dir);
- sg_init_table(&sg, 1);
- sg_set_page(&sg, pfn_to_page(PFN_DOWN(buf)),
- len , offset_in_page(buf));
- sg_dma_address(&sg) = buf;
- sg_dma_len(&sg) = len;
-
- desc = dmaengine_prep_slave_sg(chan, &sg, 1, dir,
- DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ desc = dmaengine_prep_slave_single(io->chan, buf, len, dir,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc) {
dev_err(dai->dev, "dmaengine_prep_slave_sg() fail\n");
return;
@@ -1128,13 +1118,12 @@ static void fsi_dma_do_tasklet(unsigned long data)
desc->callback = fsi_dma_complete;
desc->callback_param = io;
- cookie = desc->tx_submit(desc);
- if (cookie < 0) {
+ if (dmaengine_submit(desc) < 0) {
dev_err(dai->dev, "tx_submit() fail\n");
return;
}
- dma_async_issue_pending(chan);
+ dma_async_issue_pending(io->chan);
/*
* FIXME