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authorDaniel Mack <daniel@caiaq.de>2009-10-29 02:24:32 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-10-29 12:58:13 +0000
commit7e1aa1dcd0d886df72586e3a94b1a7382952f21f (patch)
treec258b4d736f2ecdcb68ce87f3b110594bdf6bd4c /sound/soc/codecs
parent26d95b6e300c4847be6ec8bfe817dbd531e94d9a (diff)
ASoC: CS4270: export de-emphasis filter as ALSA control
The CS4270 codec features an de-emphasis filter for compensation of audio material filtered by an 50/15 uS algorithm. Not sure whether we should always enable it for 44100Hz sampling frequency, but it should at least be configurable by the user. Signed-off-by: Daniel Mack <daniel@caiaq.de> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs')
-rw-r--r--sound/soc/codecs/cs4270.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c
index 59bb16d033d..565842dcfc6 100644
--- a/sound/soc/codecs/cs4270.c
+++ b/sound/soc/codecs/cs4270.c
@@ -520,6 +520,7 @@ static const struct snd_kcontrol_new cs4270_snd_controls[] = {
SOC_SINGLE("Digital Sidetone Switch", CS4270_FORMAT, 5, 1, 0),
SOC_SINGLE("Soft Ramp Switch", CS4270_TRANS, 6, 1, 0),
SOC_SINGLE("Zero Cross Switch", CS4270_TRANS, 5, 1, 0),
+ SOC_SINGLE("De-emphasis filter", CS4270_TRANS, 0, 1, 0),
SOC_SINGLE("Popguard Switch", CS4270_MODE, 0, 1, 1),
SOC_SINGLE("Auto-Mute Switch", CS4270_MUTE, 5, 1, 0),
SOC_DOUBLE("Master Capture Switch", CS4270_MUTE, 3, 4, 1, 1),