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The Freescale SSI audio controller supports "synchronous" and "asynchronous" modes. In synchronous mode, playback and capture use the same input clock, so sample rates must be the same during simultaneous playback and capture. Unfortunately, the code which supports asynchronous mode is just broken in various ways. In particular, it was constraining sample sizes as well as the sample rate. The fix also allows us to simplify the code by eliminating the 'asynchronous', 'playback', and 'capture' variables that were used to keep track of playback and capture streams. Unfortunately, it turns out that simulataneous playback and record does not actually work on the only platform that supports asynchronous mode: the Freescale P1022DS reference board. If a second stream is started, the SSI grinds to halt for both streams. This is true even if the P1022 is configured for synchronous mode, so it's likely a hardware problem that needs to be worked around. Signed-off-by: Timur Tabi <timur@freescale.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> |
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| .. | ||
| efika-audio-fabric.c | ||
| fsl_dma.c | ||
| fsl_dma.h | ||
| fsl_ssi.c | ||
| fsl_ssi.h | ||
| Kconfig | ||
| Makefile | ||
| mpc5200_dma.c | ||
| mpc5200_dma.h | ||
| mpc5200_psc_ac97.c | ||
| mpc5200_psc_ac97.h | ||
| mpc5200_psc_i2s.c | ||
| mpc8610_hpcd.c | ||
| p1022_ds.c | ||
| pcm030-audio-fabric.c | ||