This occurs frequently if we are in edge triggered mode as we must poll the
interrupt status register until we get no more interrupts so it's worth
the effort - it means we skip writing null acknowledgements to the chip.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NLiam Girdwood <lrg@ti.com>

For non-audio uses like accessory detection we can use a lower quality,
unregulated microphone bias, saving a little power. As the hardware can
manually enable and disable the biases we can select regulating mode
automatically with supply widgets connected to the biases.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NLiam Girdwood <lrg@ti.com>

This closes the small race between a status being read in response to an
interrupt and clearing the interrupt, meaning that if the status changes
between those periods we might not get a reassertion of the interrupt.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

For marketing reasons the part will be called WM8996. In order to avoid
user confusion rename the driver to reflect this.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NLiam Girdwood <lrg@ti.com>