On Tue, Oct 20, 2015 at 11:47:12AM +0900, Jiada Wang wrote:
As ALC2 register is volatile, declare it as one of ALC Coefficients register together with other non-volatile registers will cause issue, in case wm8962 has enter suspend mode, and cache_only flag is set, any attempt to read from ALC2 will fail.
Instead of declaring one ALC Coefficients register which contains ALC1 ~ ALC3 and Noise Gate, this patch declares 4 separate registers, so that regmap can handle these registers differently based on their classification.
In addition to the issue with the ABI change that Charles raised this also doesn't entirely fix the issue in that we still have a control that is going to give an error in suspend mode. Charles' suggestion seems like it's more likely to be helpful to users.