[alsa-devel] [PATCH] ASoC: Add support for multi register mux
broonie at kernel.org
Thu Mar 20 12:48:29 CET 2014
On Wed, Mar 19, 2014 at 04:44:00PM -0700, Arun Shamanna Lakshmi wrote:
Don't top post and fix your mailer to word wrap within paragraphs, your
mail is very hard to read.
> If each bit of a 32 bit register maps to an input of a mux, then with
> the current 'soc_enum' structure we cannot have more than 64 inputs
> for the mux (because of reg and reg2 only).
What makes you say that? We currently have devices in mainline which
have well over 32 inputs to muxes.
> For instance, the audio xbar (AXBAR) module acts as a mux selecting
> various inputs (reference: Tegra K1 manual).
I don't have access to non-public nVidia documents...
> The number of such inputs increases with future Tegra chips and so
> will be the need to control multiple registers per mux in DAPM. We
> have 2 options to achieve that.
Like I said in my previous reply I would expect to see some users along
with the code, extending the standard helpers to support this would be a
much better idea than doing something driver custom.
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 836 bytes
Desc: Digital signature
More information about the Alsa-devel