In the LunarLake hardware, the default IP ownership changed to the host driver, instead of the firmware in previous generation. In the absence of any capability negotiation, we need to assume a fixed partitioning between host driver and firmware. The OFLEN bit needs to be set as early as possible for resources handled by the firmware, since we can't control when the firmware might try to access the resources. For now DMIC and SSP are handled by the DSP firmware. SoundWire is a separate case, the OFLEN bit can be set when starting-up and resuming the aux device for each link. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20230807210959.506849-9-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.
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