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H A D | wm8962.h | 44330ab5 Tue May 13 07:45:15 CDT 2014 Charles Keepax <ckeepax@opensource.wolfsonmicro.com> 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 44330ab5 Tue May 13 07:45:15 CDT 2014 Charles Keepax <ckeepax@opensource.wolfsonmicro.com> 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
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H A D | wm8962.c | 44330ab5 Tue May 13 07:45:15 CDT 2014 Charles Keepax <ckeepax@opensource.wolfsonmicro.com> 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 44330ab5 Tue May 13 07:45:15 CDT 2014 Charles Keepax <ckeepax@opensource.wolfsonmicro.com> 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
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