[alsa-devel] [PATCH 05/16] ASoC: core: Add strobe control

[Mark Brown]

On Tue, Mar 13, 2012 at 04:11:32PM +0100, Ola Lilja wrote:
> From: Kristoffer KARLSSON <kristoffer.karlsson at stericsson.com>
> 
> Added support for a control that strobes a bit in
> a register to high then back to low (or the inverse).
> 
> This is typically useful for hardware that requires
> strobing a singe bit to trigger some functionality
> and where exposing the bit in a normal enum control
> would require the user to first manually set then
> again unset the bit again for the strobe to trigger.
> 
> Get/put accessors added.
> 
> snd_soc_get_enum_strobe
> snd_soc_put_enum_strobe
> 
> Also a generic convenience macros added.
> 
> SOC_ENUM_STROBE

Based on this description it's hard to see why this control is patterned
after an enum - why would we have an enumerated control to bounce a
single register bit on then off?
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