7df43911e9
The settling time of DMIC DC level is both platform and used microphone model specific. The unmute gain ramp is used to conceal most of the large DC level seen in beginning of capture. This patch adds into the DMIC DAI IPC struct a new field called unmute_ramp_time and a new token SOF_TKN_INTEL_DMIC_UNMUTE_RAMP_TIME. The value is the ramp length in milliseconds (ms). The ABI minor version is incremented for this backwards compatible change. Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.