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6543ac13c6
The existing SoundWire support misses a clear Controller/Manager hiearchical definition to deal with all variants across SOC vendors. a) Intel platforms have one controller with 4 or more Managers. b) AMD platforms have two controllers with one Manager each, but due to BIOS issues use two different link_id values within the scope of a single controller. c) QCOM platforms have one or more controller with one Manager each. This patch adds a 'controller_id' which can be set by higher levels. If assigned to -1, the controller_id will be set to the system-unique IDA-assigned bus->id. The main change is that the bus->id is no longer used for any device name, which makes the definition completely predictable and not dependent on any enumeration order. The bus->id is only used to insert the Managers in the stream rt context. Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Tested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/stable/20231017160933.12624-2-pierre-louis.bossart%40linux.intel.com Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20231017160933.12624-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org> |
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| security | ||
| sound | ||
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| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| .mailmap | ||
| .rustfmt.toml | ||
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| README | ||
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.