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authorJarkko Nikula <jarkko.nikula@nokia.com>2008-11-25 12:45:08 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2008-11-25 15:20:55 +0000
commit0be43050d4da08295b985cb23347ecc1003cb8d6 (patch)
treeab2c7848fb099e4c00a0b9ff0470db9fccc0288e /sound/soc/omap/n810.c
parentfde22f272dad4fef7ba611e3f75fa94f7b43fae6 (diff)
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>
Diffstat (limited to 'sound/soc/omap/n810.c')
-rw-r--r--sound/soc/omap/n810.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/soc/omap/n810.c b/sound/soc/omap/n810.c
index d216b4f9e14..18e2062e3a1 100644
--- a/sound/soc/omap/n810.c
+++ b/sound/soc/omap/n810.c
@@ -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);
}