ddc29b0104
OMAP McBSP FIFO is word structured: McBSP2 has 1024 + 256 = 1280 word long buffer, McBSP1,3,4,5 has 128 word long buffer This means, that the size of the FIFO depends on the McBSP word size configuration. For example on McBSP3: 16bit samples: size is 128 * 2 = 256 bytes 32bit samples: size is 128 * 4 = 512 bytes It is simpler to place constraint for buffer and period based on channels. McBSP3 as example again (16 or 32 bit samples): 1 channel (mono): size is 128 frames (128 words) 2 channels (stereo): size is 128 / 2 = 64 frames (2 * 64 words) 4 channels: size is 128 / 4 = 32 frames (4 * 32 words) Use the second method to place hw_rule on buffer size, and in threshold mode to period size. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Jarkko Nikula <jhnikula@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolsfonmicro.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk> |
||
|---|---|---|
| .. | ||
| 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-mcpdm.h | ||
| 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 | ||