* ASoC: special SPI format for that5173 driver in daisy chain mode
@ 2012-10-10 15:36 Christian Schörkhuber
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From: Christian Schörkhuber @ 2012-10-10 15:36 UTC (permalink / raw)
To: alsa-devel
Hi all,
I'm working on an ASoC driver for the THAT5173 microphone preamplifier
which is controlled via SPI. When operating in daisy chain mode (4 amps)
the desired format is a bit odd: I need to write four 16 bit spi
commands (one gain setting for each amp) in a row without raising the
chipselect line between commands.
That is, I need to write one 64 bit SPI command that is composed of 4
different values (and 4 register addresses which are all 0).
Usually I use regmap but I don't see how I can construct such a message
with regmap. How can this be done (with or without regmap)?
Thanks,
Chris
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2012-10-10 15:36 ASoC: special SPI format for that5173 driver in daisy chain mode Christian Schörkhuber
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