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ASoC: Fix kirkwood i2s mono playback

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Kirkwood controller needs to be informed if the audio stream is mono
or not. Failing to do so will result in playing at the wrong speed.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
arnaud.patard@rtp-net.org 2010-07-11 23:28:31 +02:00 committed by Mark Brown
parent ccad7b44cc
commit dfe4c93627
2 changed files with 12 additions and 0 deletions
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9
sound/soc/kirkwood/kirkwood-i2s.c
View file

@ -153,6 +153,15 @@ static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream,
default:
return -EINVAL;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
value &= ~KIRKWOOD_PLAYCTL_MONO_MASK;
if (params_channels(params) == 1)
value |= KIRKWOOD_PLAYCTL_MONO_BOTH;
else
value |= KIRKWOOD_PLAYCTL_MONO_OFF;
}
writel(i2s_value, priv->io+i2s_reg);
writel(value, priv->io+reg);

3
sound/soc/kirkwood/kirkwood.h
View file

@ -49,6 +49,9 @@
#define KIRKWOOD_PLAYCTL_BURST_32 (1<<11)
#define KIRKWOOD_PLAYCTL_PAUSE (1<<9)
#define KIRKWOOD_PLAYCTL_SPDIF_MUTE (1<<8)
#define KIRKWOOD_PLAYCTL_MONO_MASK (3<<5)
#define KIRKWOOD_PLAYCTL_MONO_BOTH (3<<5)
#define KIRKWOOD_PLAYCTL_MONO_OFF (0<<5)
#define KIRKWOOD_PLAYCTL_I2S_MUTE (1<<7)
#define KIRKWOOD_PLAYCTL_SPDIF_EN (1<<4)
#define KIRKWOOD_PLAYCTL_I2S_EN (1<<3)