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ASoC: OMAP: Apply channel constrains to N810 machine driver 

Prepare for upcoming McBSP DAI update adding support for mono links by
restricting number of channels to 2 in N810. This is due tlv320aic3x which
claims channels_min = 1 and playing pure mono audio over I2S would cause
it to be played only from left channel if both cpu and codec DAI's claim to
support mono.

Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Jarkko Nikula 2008-11-25 12:45:08 +02:00 committed by Mark Brown
parent fde22f272d
commit 0be43050d4
1 changed files with 4 additions and 0 deletions
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4
sound/soc/omap/n810.c
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@ -70,9 +70,13 @@ static void n810_ext_control(struct snd_soc_codec *codec)
static int n810_startup(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->socdev->codec;
snd_pcm_hw_constraint_minmax(runtime,
SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
n810_ext_control(codec);
return clk_enable(sys_clkout2);
}