Add support for digital volume control. There is no dedicated register
for volume control but instead there are 4. The values of the registers
are determined with exponential floating point math.
So a table was created with register values for 2dB step increments
from -110dB to 0dB.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Link: https://lore.kernel.org/r/20200221124151.8774-1-dmurphy@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add additional support for ISENSE and VSENSE feature for the TAS2562.
This feature monitors the output to the loud speaker attempts to
eliminate IR drop errors due to packaging.
This feature is defined in Section 8.4.5 IV Sense of the data sheet.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Link: https://lore.kernel.org/r/20200219134622.22066-1-dmurphy@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Dan Murphy