26c53379f9
to do synchronous audio forwarding between hardware sound card and aloop devices. Such an audio route could look like the following: Sound card -> Loopback application -> ALSA loop device -> arecord In this case the loopback device should use the sound timer of the sound card. Without this patch the loopback application has to implement an adaptive sample rate converter to align the different clocks of the different ALSA devices. The used timer can be selected by referring to a sound card, its device and subdevice, when loading the module: $ modprobe snd_aloop enable=1 timer_source=[<card>[.<dev>[.<subdev>]]] <card> is the name (id) of the sound card or a card number. <dev> and <subdev> are device and subdevice numbers (defaults are 0). Empty string as a value of timer_source= parameter enables previous functionality (using jiffies timer). Signed-off-by: Timo Wischer <twischer@de.adit-jv.com> Signed-off-by: Andrew Gabbasov <andrew_gabbasov@mentor.com> Link: https://lore.kernel.org/r/20191120174955.6410-7-andrew_gabbasov@mentor.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
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.