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Diffstat (limited to 'sound/soc/fsl/mpc5200_psc_ac97.c')
-rw-r--r--sound/soc/fsl/mpc5200_psc_ac97.c39
1 files changed, 21 insertions, 18 deletions
diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c
index c4ae3e096bb..3dbc7f7cd7b 100644
--- a/sound/soc/fsl/mpc5200_psc_ac97.c
+++ b/sound/soc/fsl/mpc5200_psc_ac97.c
@@ -130,6 +130,7 @@ static int psc_ac97_hw_analog_params(struct snd_pcm_substream *substream,
struct snd_soc_dai *cpu_dai)
{
struct psc_dma *psc_dma = cpu_dai->private_data;
+ struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma);
dev_dbg(psc_dma->dev, "%s(substream=%p) p_size=%i p_bytes=%i"
" periods=%i buffer_size=%i buffer_bytes=%i channels=%i"
@@ -140,20 +141,10 @@ static int psc_ac97_hw_analog_params(struct snd_pcm_substream *substream,
params_channels(params), params_rate(params),
params_format(params));
-
- if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE) {
- if (params_channels(params) == 1)
- psc_dma->slots |= 0x00000100;
- else
- psc_dma->slots |= 0x00000300;
- } else {
- if (params_channels(params) == 1)
- psc_dma->slots |= 0x01000000;
- else
- psc_dma->slots |= 0x03000000;
- }
- out_be32(&psc_dma->psc_regs->ac97_slots, psc_dma->slots);
-
+ /* Determine the set of enable bits to turn on */
+ s->ac97_slot_bits = (params_channels(params) == 1) ? 0x100 : 0x300;
+ if (substream->pstr->stream != SNDRV_PCM_STREAM_CAPTURE)
+ s->ac97_slot_bits <<= 16;
return 0;
}
@@ -163,6 +154,8 @@ static int psc_ac97_hw_digital_params(struct snd_pcm_substream *substream,
{
struct psc_dma *psc_dma = cpu_dai->private_data;
+ dev_dbg(psc_dma->dev, "%s(substream=%p)\n", __func__, substream);
+
if (params_channels(params) == 1)
out_be32(&psc_dma->psc_regs->ac97_slots, 0x01000000);
else
@@ -176,14 +169,24 @@ static int psc_ac97_trigger(struct snd_pcm_substream *substream, int cmd,
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
+ struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma);
switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ dev_dbg(psc_dma->dev, "AC97 START: stream=%i\n",
+ substream->pstr->stream);
+
+ /* Set the slot enable bits */
+ psc_dma->slots |= s->ac97_slot_bits;
+ out_be32(&psc_dma->psc_regs->ac97_slots, psc_dma->slots);
+ break;
+
case SNDRV_PCM_TRIGGER_STOP:
- if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
- psc_dma->slots &= 0xFFFF0000;
- else
- psc_dma->slots &= 0x0000FFFF;
+ dev_dbg(psc_dma->dev, "AC97 STOP: stream=%i\n",
+ substream->pstr->stream);
+ /* Clear the slot enable bits */
+ psc_dma->slots &= ~(s->ac97_slot_bits);
out_be32(&psc_dma->psc_regs->ac97_slots, psc_dma->slots);
break;
}