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73cd049081
In the past, we unified HD-audio HDMI codec driver once with a slight hope that more vendors will follow the standard, but in reality, the driver received more and more vendor-specific code. In order to make the messy code a bit more understandable, this patch splits the HDMI codec driver into multiple drivers again. Namely, the vendor-specific code for Intel, AMD and Nvidia are moved into the own drivers, while we split the common HDMI code to two drivers, the generic HDMI driver and the simple HDMI driver. So, now we have: - The generic HDMI driver (snd-hda-codec-hdmi): providing the common helpers, also supports Glenfly HDMI codecs and some other codecs that don't need vendor-specific stuff - The simple HDMI driver (snd-hda-codec-simplehdmi): devices with no dynamic PCM assignment and with fixed channels, mostly used by some other drivers, but this driver alone suffices for VIA HDMI codec support, too - Intel HDMI driver (snd-hda-codec-intelhdmi): bound with i915 / Xe DRM, based on the generic HDMI driver - AMD/ATI HDMI driver (snd-hda-codec-atihdmi): optionally bound with radeon / amdgpu DRM, based on the generic HDMI driver - Nvidia HDMI driver (snd-hda-codec-nvhdmi); optionally bound with nouveau DRM, based on the generic HDMI driver - Legacy Nvidia HDMI driver (snd-hda-codec-nvhdmi-mcp): for 2ch or 8ch outputs, based on the simple HDMI driver - Nvidia Tegra HDMI driver (snd-hda-codec-tegrahdmi): based on the generic HDMI driver Along with the driver split, the enable_silent_stream module option is moved to snd-hda-codec-intelhdmi, too, as it's an Intel-specific feature. Most of the changes here are just to split and move the code to different files, as well as to rename/expose the functions that are commonly used by drivers. The silent stream handling code is slightly modified for putting the stuff into Intel driver; now a new callback "silent_stream" is defined in hdmi_ops, and it's called in silent_stream_enable() and *_disable() functions. The runtime-PM handling in silent_stream_enable() was cleaned up, and rather taking the runtime PM refcount in the silent_stream() callback appropriately, instead. Other than that, there should be no functional changes. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20250709160434.1859-9-tiwai@suse.de |
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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 reStructuredText 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.