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Starting with Qualcomm SM8350 SoC, so Low Power Audio SubSystem (LPASS) block version v9.2, the register responsible for TX SMIC MUXn muxes is different. In earlier LPASS versions this mux had bit fields for analogue (ADCn) and digital (SWR_DMICn) MICs. Choice of ADCn was selecting the analogue path in CDC_TX_TOP_CSR_SWR_DMICn_CTL register. With LPASS v9.2 and newer, the bit fields are integrated into just SWR_MICn and there is no distinction for analogue or digital MIC in the register. Fix support for LPASS v9.2+: 1. Add new set of widgets and audio routes for LPASS v9.2. 2. Do not choose analogue or digital in CDC_TX_TOP_CSR_SWR_DMICn_CTL based on value of the mux. 3. Replace all the input widgets (TX SWR_ADCn, TX SWR_DMICn) with TX SWR_INPUTn ones. The change is not backwards compatible with older DTBs and existing mixer settings, therefore it does not change handling of older platforms with working micrphones (SC8280xp) but only the ones with issues (SM8450, SM8550) which need the fix. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://msgid.link/r/20240226115925.53953-3-krzysztof.kozlowski@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org> |
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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.