Jaroslav Kysela
aba51cd094
selftests: alsa - add PCM test
This initial code does a simple sample transfer tests. By default, all PCM devices are detected and tested with short and long buffering parameters for 4 seconds. If the sample transfer timing is not in a +-100ms boundary, the test fails. Only the interleaved buffering scheme is supported in this version. The configuration may be modified with the configuration files. A specific hardware configuration is detected and activated using the sysfs regex matching. This allows to use the DMI string (/sys/class/dmi/id/* tree) or any other system parameters exposed in sysfs for the matching for the CI automation. The configuration file may also specify the PCM device list to detect the missing PCM devices. v1..v2: - added missing alsa-local.h header file Cc: Mark Brown <broonie@kernel.org> Cc: Pierre-Louis Bossart <pierre-louis.bossart@intel.com> Cc: Liam Girdwood <liam.r.girdwood@intel.com> Cc: Jesse Barnes <jsbarnes@google.com> Cc: Jimmy Cheng-Yi Chiang <cychiang@google.com> Cc: Curtis Malainey <cujomalainey@google.com> Cc: Brian Norris <briannorris@chromium.org> Signed-off-by: Jaroslav Kysela <perex@perex.cz> Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20221108115914.3751090-1-perex@perex.cz 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.
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