[alsa-devel] [PATCH] alsa: Add support for timberdale I2S block

Richard Röjfors richard.rojfors at mocean-labs.com
Mon Feb 1 16:20:38 CET 2010

Mark Brown wrote:
> On Mon, Oct 26, 2009 at 02:02:57PM +0100, Richard R?jfors wrote:
>> This driver adds support for the I2S block of the timberdale FPGA.
>> The timberdale is a FPGA found on intel development boards for
>> In-Vehicle Infotainment.
>> The block has support for up to 8 I2S channels, can be clocked
>> from either the FPGA or the device side.
>> This driver introduces support for this block, by exposing each
>> I2S channel as an ALSA PCM channel.
>> Signed-off-by: Richard R?jfors <richard.rojfors at mocean-labs.com>
> Without having investigated in any great detail I'd really expect this
> driver to be done within ASoC if it's producing generic I2S output.  If
> it's producing I2S out then presumably system designers will be able to
> attach whatever CODECs they desire and if those CODECs require any soft
> control then there will be a need to interoperate with CODEC drivers.

This thing produces raw I2S/captures raw I2S as you say. It's used to
connect to bluetooth chips and radio DSP:s. So there are no CODEC:s
involved. Does it make sense to do it within ASoC?


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