mirror of https://gitee.com/openkylin/linux.git
fa4d1f595a
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> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| am3517evm.c | ||
| ams-delta.c | ||
| igep0020.c | ||
| mcpdm.c | ||
| mcpdm.h | ||
| n810.c | ||
| omap-mcbsp.c | ||
| omap-mcbsp.h | ||
| omap-mcpdm.c | ||
| omap-pcm.c | ||
| omap-pcm.h | ||
| omap2evm.c | ||
| omap3beagle.c | ||
| omap3evm.c | ||
| omap3pandora.c | ||
| osk5912.c | ||
| overo.c | ||
| rx51.c | ||
| sdp3430.c | ||
| sdp4430.c | ||
| zoom2.c | ||