ASoC: Use network mode with 2 slots for 16-bit stereo in pxa-ssp/Zylonite
For consistency with 24-bit and 32-bit modes, don't send 16-bit stereo
in one 32-bit transfer. Use 2 slots instead on Zylonite. It should result
in exactly the same behaviour.
Now it is possible to use 16-bit single slot transfers in pxa-ssp, which
are needed for Magician to get two frame clock pulses per sample
(one for each channel).
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Tested-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/pxa/pxa-ssp.c b/sound/soc/pxa/pxa-ssp.c
index 4a973ab..c49bb12 100644
--- a/sound/soc/pxa/pxa-ssp.c
+++ b/sound/soc/pxa/pxa-ssp.c
@@ -644,8 +644,7 @@
sscr0 |= SSCR0_FPCKE;
#endif
sscr0 |= SSCR0_DataSize(16);
- if (params_channels(params) > 1)
- sscr0 |= SSCR0_EDSS;
+ /* use network mode (2 slots) for 16 bit stereo */
break;
case SNDRV_PCM_FORMAT_S24_LE:
sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(8));
diff --git a/sound/soc/pxa/zylonite.c b/sound/soc/pxa/zylonite.c
index 0140a25..9f6116e 100644
--- a/sound/soc/pxa/zylonite.c
+++ b/sound/soc/pxa/zylonite.c
@@ -127,8 +127,11 @@
if (ret < 0)
return ret;
- /* We're not really in network mode but the emulation wants this. */
- ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 1);
+ /* Use network mode for stereo, one slot per channel. */
+ if (params_channels(params) > 1)
+ ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 2);
+ else
+ ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 1);
if (ret < 0)
return ret;