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authorTakashi Iwai <tiwai@suse.de>2009-04-06 03:47:20 +0200
committerTakashi Iwai <tiwai@suse.de>2009-04-06 03:47:20 +0200
commitb114701c0e8d580a05643c874d87e2501ab729cb (patch)
treea4e69cc865b9b76b6737d0d8b8dc81fc40c1e88f /sound/soc/pxa/pxa-ssp.c
parent0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c (diff)
parent103f211d0be2bed75b5739de62a10415ef0bbc25 (diff)
downloadop-kernel-dev-b114701c0e8d580a05643c874d87e2501ab729cb.zip
op-kernel-dev-b114701c0e8d580a05643c874d87e2501ab729cb.tar.gz
Merge branch 'topic/asoc' into for-linus
Diffstat (limited to 'sound/soc/pxa/pxa-ssp.c')
-rw-r--r--sound/soc/pxa/pxa-ssp.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/sound/soc/pxa/pxa-ssp.c b/sound/soc/pxa/pxa-ssp.c
index 7acd3fe..308a657 100644
--- a/sound/soc/pxa/pxa-ssp.c
+++ b/sound/soc/pxa/pxa-ssp.c
@@ -627,12 +627,18 @@ static int pxa_ssp_hw_params(struct snd_pcm_substream *substream,
u32 sscr0;
u32 sspsp;
int width = snd_pcm_format_physical_width(params_format(params));
+ int ttsa = ssp_read_reg(ssp, SSTSA) & 0xf;
/* select correct DMA params */
if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
dma = 1; /* capture DMA offset is 1,3 */
- if (chn == 2)
- dma += 2; /* stereo DMA offset is 2, mono is 0 */
+ /* Network mode with one active slot (ttsa == 1) can be used
+ * to force 16-bit frame width on the wire (for S16_LE), even
+ * with two channels. Use 16-bit DMA transfers for this case.
+ */
+ if (((chn == 2) && (ttsa != 1)) || (width == 32))
+ dma += 2; /* 32-bit DMA offset is 2, 16-bit is 0 */
+
cpu_dai->dma_data = ssp_dma_params[cpu_dai->id][dma];
dev_dbg(&ssp->pdev->dev, "pxa_ssp_hw_params: dma %d\n", dma);
@@ -712,7 +718,7 @@ static int pxa_ssp_hw_params(struct snd_pcm_substream *substream,
/* When we use a network mode, we always require TDM slots
* - complain loudly and fail if they've not been set up yet.
*/
- if ((sscr0 & SSCR0_MOD) && !(ssp_read_reg(ssp, SSTSA) & 0xf)) {
+ if ((sscr0 & SSCR0_MOD) && !ttsa) {
dev_err(&ssp->pdev->dev, "No TDM timeslot configured\n");
return -EINVAL;
}
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