ASoC: AC97 driver for mpc5200

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I've implemented retries for when the AC97 hardware doesn't reset on
first try. About 10% of the time both the Efika and pcm030 AC97 codecs
don't reset on first try and need to be poked multiple times.  Failure
is indicated by not having the link clock start ticking. Every once in
a while even five pokes won't get the link started and I have to power
cycle.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

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Jon Smirl 2009-05-26 08:34:10 -04:00 • committed by Mark Brown

parent dbcc347562

commit 20d0e1520e

4 changed files with 358 additions and 0 deletions

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11

sound/soc/fsl/Kconfig

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1

sound/soc/fsl/Makefile

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331

sound/soc/fsl/mpc5200_psc_ac97.c

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15

sound/soc/fsl/mpc5200_psc_ac97.h

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