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Andrzej Zaborowski authored
ALSA driver for OMAP boards with a TSC2102 chip. It is based on the TSC2101 and AIC23 drivers. The chip has only one audio playback output and no inputs. It can play stereo sound with 16-bit samples (only) and supports different sampling rates between 8 and 48 kHz. The patch also includes an ALSA mixer. The mixer controlls two volume levels, for left and right channels, each with 128 steps. It can also toggle the analog de-emphasis filter and bass boost filter which are incorporated in the chip. In addition to that the chip has an equaliser filter, but the mixer doesn't use it because the coefficients of the filter are difficult to map to other values used in normal equalisers. Maybe they should have constant values per board. Signed-off-by: Andrzej Zaborowski <balrog@zabor.org>
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