ASoC: Improved wm_hubs headphone handling

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Perform DC servo offset calibration using a series update sequence
rather than startup update sequence, tuning the configuration of the
WM8993 DC servo to make best use of this.

Also introduce currently unused data allowing us to correct for
any systematic errors in the DC servo calibration results and an
alternative startup path for the headphone output which performs
better with some chip revisions.  The alternative setup sequence is
enabled for WM8993.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

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This commit is contained in:

Mark Brown 2010-01-20 17:39:45 +00:00

parent 2f1ff6614c

commit 3ed7074c4c

3 changed files with 130 additions and 26 deletions

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8

sound/soc/codecs/wm8993.c

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142

sound/soc/codecs/wm_hubs.c

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6

sound/soc/codecs/wm_hubs.h

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