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| author | Alexander Stein <alexander.stein@systec-electronic.com> | 2015-04-16 14:51:57 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-04-27 16:42:20 +0200 |
| commit | 1f39d9397f8a27becd2b72009865610a71c64b0f (patch) | |
| tree | dd736e870b699c31af2a2ce4a4e7f499dd070785 /include | |
| parent | ASoC: sgtl5000: Use specific variable for lo_vag (diff) | |
| download | linux-1f39d9397f8a27becd2b72009865610a71c64b0f.tar.xz linux-1f39d9397f8a27becd2b72009865610a71c64b0f.zip | |
ASoC: sgtl5000: Calculate Lineout Channel Output Level
Currently LO_VOL_* stays at it's default (0x4 each) but this should be
calculated after setting VAG_VAL and LO_VAGCNTRL.
LO_VOL_* = 40 * log10(VAG_VAL / LO_VAGCNTRL) + 15
To avoid the log10 operation a table for all valid register values is
precalculated which contains the corresponding value
(VAG_VAL * 100 / LO_VAGCNTRL).
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions