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https://github.com/torvalds/linux
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cf80e15860
Utilize the sDMA controller's packet syncronization mode, when the McBSP FIFO is in use (by extending the THRESHOLD mode). When the sDMA is configured for packet mode, the sDMA frame size does not need to match with the McBSP threshold configuration. Uppon DMA request the sDMA will transfer packet size number of words, and still trigger interrupt on frame boundary. The patch extends the original THRESHOLD mode by doing the following: if (period_words <= max_threshold) Current THRESHOLD mode configuration Otherwise (period_words > max_threshold) McBSP threshold = sDMA packet size sDMA frame size = period size With the extended THRESHOLD mode we can remove the constraint for the maximum period size, since if the period size is bigger than the maximum allowed threshold, than the driver will switch to packet mode, and picks the best (biggest) threshold value, which can divide evenly the period size. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-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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| .. | ||
| am3517evm.c | ||
| ams-delta.c | ||
| igep0020.c | ||
| Kconfig | ||
| Makefile | ||
| 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 | ||