On Tue, Feb 07, 2012 at 03:39:24PM +0200, Peter Ujfalusi wrote:
In the codec driver I have one 'shadow' register which does not exist on the HW. I'm going to need to have access to that shadow register's bits in the future transparently.
Alternatively just rewrite the code for that to use a variable in the driver private data.
I was wondering if we could add support to regmap for such SW only registers. This would only make sens if the cache is enabled. We could have a callback let's say shadow_reg() in remap_config struct. If it is a shadow reg we never reach out for the HW and operate only on the cache. Is this something we can add to regmap?
That just sounds far too icky - I'm really not happy that people have been doing that in ASoC TBH, it just makes everything more tricky than it should be. It save a little bit of effort with the control but just pushes that complexity elsewhere where you're not expecting it.