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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-01-21 11:33:20 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-01-21 12:05:39 +0000 |
| commit | 821dd91ec7838e1313d783384ea9ce43510d4013 (patch) | |
| tree | 020f4733c0bc55ea7e3b3262dd6685f126f2e298 /sound | |
| parent | a96ca3387382498ec8b501db5acef3ed9eb1bd36 (diff) | |
| download | op-kernel-dev-821dd91ec7838e1313d783384ea9ce43510d4013.zip op-kernel-dev-821dd91ec7838e1313d783384ea9ce43510d4013.tar.gz | |
ASoC: Use BIAS_OFF when idle for wm_hubs devices
This provides a small power saving when audio is inactive.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/wm_hubs.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c index d73c305..a67319d 100644 --- a/sound/soc/codecs/wm_hubs.c +++ b/sound/soc/codecs/wm_hubs.c @@ -753,6 +753,12 @@ int wm_hubs_handle_analogue_pdata(struct snd_soc_codec *codec, WM8993_LINEOUT2_MODE, WM8993_LINEOUT2_MODE); + /* If the line outputs are differential then we aren't presenting + * VMID as an output and can disable it. + */ + if (lineout1_diff && lineout2_diff) + codec->idle_bias_off = 1; + if (lineout1fb) snd_soc_update_bits(codec, WM8993_ADDITIONAL_CONTROL, WM8993_LINEOUT1_FB, WM8993_LINEOUT1_FB); |
