diff options
author | Markus Pargmann <mpa@pengutronix.de> | 2014-01-16 16:02:10 +0100 |
---|---|---|
committer | Mark Brown <broonie@linaro.org> | 2014-02-03 12:44:50 +0000 |
commit | f227b88f0fce5f9b82aa934f8829a741c2e06d82 (patch) | |
tree | 79d3aa04bf8075f5611ff1ee30ad9238a5c0d4f8 /lib/find_last_bit.c | |
parent | 38dbfb59d1175ef458d006556061adeaa8751b72 (diff) |
ASoC: core: Add signed register volume control logic
Some codecs use signed volume control representation with non standard
register sizes, e.g. 6 or 7 bit signed integers.
This patch adds generic signed register volume control logic to
soc-core. Instead of a fixed width signed register control, this
implementation uses a 'min' value and the signed bit location to translate
it to an absolute volume. Using the 'sign_bit' we can calculate a
correct mask for the register values and translate it back into signed
integers of standard size.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'lib/find_last_bit.c')
0 files changed, 0 insertions, 0 deletions