tree 477b5afcb5d64e2babe2e7fc783c21d91a121fc5
parent c9eaa447e77efe77b7fa4c953bd62de8297fd6c5
author Charles Keepax <ckeepax@opensource.wolfsonmicro.com> 1399985115 +0100
committer Mark Brown <broonie@linaro.org> 1400004150 +0100

ASoC: wm8962: Update register CLASS_D_CONTROL_1 to be non-volatile

The register CLASS_D_CONTROL_1 is marked as volatile because it contains
a bit, DAC_MUTE, which is also mirrored in the ADC_DAC_CONTROL_1
register. This causes problems for the "Speaker Switch" control, which
will report an error if the CODEC is suspended because it relies on a
volatile register.

To resolve this issue mark CLASS_D_CONTROL_1 as non-volatile and
manually keep the register cache in sync by updating both bits when
changing the mute status.

Reported-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@vger.kernel.org