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| author |   Jarkko Nikula <jhnikula@gmail.com> | 2011-03-09 11:25:00 +0200 |
|---|---|---|
| committer |   Liam Girdwood <lrg@slimlogic.co.uk> | 2011-03-09 10:52:28 +0000 |
| commit | fa4d1f595a89234647b34a7f507436be873091bc (patch) | |
| tree | 3ce719294b6ffd656f66cc9ee4ec3bbc1c1e111e /kernel/fork.c | |
| parent | ASoC: omap: rx51: Add FM transmitter support (diff) | |
| download | wireguard-linux-fa4d1f595a89234647b34a7f507436be873091bc.tar.xz wireguard-linux-fa4d1f595a89234647b34a7f507436be873091bc.zip | |
ASoC: omap: rx51: Enable McBSP2 sidetone
McBSP sidetone is needed in telephony applications. McBSP sidetone is a
configurable FIR filter that forms a loopback from McBSP input to output.
This patch enables the McBSP2 sidetone ALSA controls so that it can be used
on Nokia RX-51/N900.
Sidetone feature can be tested with following commands:
(set up codec input and output paths)
# Enable and configure sidetone
amixer -D hw:0 set 'McBSP2 Sidetone' on
amixer set -D hw:0 'McBSP2 Sidetone Channel 0' 32767
echo 32767 >/sys/devices/platform/omap-mcbsp.2/st_taps
# Do not loop audio via CPU
arecord -f dat >/dev/null |aplay /dev/zero
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'kernel/fork.c')
0 files changed, 0 insertions, 0 deletions