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McBSP2 in OMAP3 has 1 ksample (1k x 32 bit) internal FIFO. During initial playback startup, this FIFO is keeping the DMA request active until the FIFO is full. So now if ALSA buffer size is smaller, DMA is looping around it while filling up the HW FIFO, generating burst of interrupts as well and SW doesn't have any change to fill enough data. Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> |
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.. | ||
Kconfig | ||
Makefile | ||
n810.c | ||
omap2evm.c | ||
omap3beagle.c | ||
omap3pandora.c | ||
omap-mcbsp.c | ||
omap-mcbsp.h | ||
omap-pcm.c | ||
omap-pcm.h | ||
osk5912.c | ||
overo.c | ||
sdp3430.c |