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| author | David S. Miller <davem@davemloft.net> | 2009-09-11 20:35:13 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-11 20:35:13 -0700 |
| commit | cabc5c0f7fa1342049042d6e147db5a73773955b (patch) | |
| tree | 2be09ae1777d580c7dfe05d6d5b76e57281ec447 /sound/soc/davinci/davinci-pcm.c | |
| parent | b73d884756303316ead4cd7dad51236b2a515a1a (diff) | |
| parent | 86d710146fb9975f04c505ec78caa43d227c1018 (diff) | |
| download | blackbird-obmc-linux-cabc5c0f7fa1342049042d6e147db5a73773955b.tar.gz blackbird-obmc-linux-cabc5c0f7fa1342049042d6e147db5a73773955b.zip | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
arch/sparc/Kconfig
Diffstat (limited to 'sound/soc/davinci/davinci-pcm.c')
| -rw-r--r-- | sound/soc/davinci/davinci-pcm.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sound/soc/davinci/davinci-pcm.c b/sound/soc/davinci/davinci-pcm.c index a05996588489..091dacb78b4d 100644 --- a/sound/soc/davinci/davinci-pcm.c +++ b/sound/soc/davinci/davinci-pcm.c @@ -67,6 +67,7 @@ static void davinci_pcm_enqueue_dma(struct snd_pcm_substream *substream) dma_addr_t src, dst; unsigned short src_bidx, dst_bidx; unsigned int data_type; + unsigned short acnt; unsigned int count; period_size = snd_pcm_lib_period_bytes(substream); @@ -91,11 +92,12 @@ static void davinci_pcm_enqueue_dma(struct snd_pcm_substream *substream) dst_bidx = data_type; } + acnt = prtd->params->acnt; edma_set_src(lch, src, INCR, W8BIT); edma_set_dest(lch, dst, INCR, W8BIT); edma_set_src_index(lch, src_bidx, 0); edma_set_dest_index(lch, dst_bidx, 0); - edma_set_transfer_params(lch, data_type, count, 1, 0, ASYNC); + edma_set_transfer_params(lch, acnt, count, 1, 0, ASYNC); prtd->period++; if (unlikely(prtd->period >= runtime->periods)) @@ -206,6 +208,7 @@ static int davinci_pcm_prepare(struct snd_pcm_substream *substream) /* Copy self-linked parameter RAM entry into master channel */ edma_read_slot(prtd->slave_lch, &temp); edma_write_slot(prtd->master_lch, &temp); + davinci_pcm_enqueue_dma(substream); return 0; } @@ -243,6 +246,11 @@ static int davinci_pcm_open(struct snd_pcm_substream *substream) int ret = 0; snd_soc_set_runtime_hwparams(substream, &davinci_pcm_hardware); + /* ensure that buffer size is a multiple of period size */ + ret = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + if (ret < 0) + return ret; prtd = kzalloc(sizeof(struct davinci_runtime_data), GFP_KERNEL); if (prtd == NULL) |
