[Bug 2069760] Re: Soundwire support for CS42L43 and CS35L56 on Intel MTL

[Lukas Märdian]

Dropping ~ubuntu-sponsors, as this got sponsored already.

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https://bugs.launchpad.net/bugs/2069760

Title:
  Soundwire support for CS42L43 and CS35L56 on Intel MTL

Status in alsa-ucm-conf package in Ubuntu:
  Fix Released
Status in firmware-sof package in Ubuntu:
  Fix Released
Status in alsa-ucm-conf source package in Noble:
  Fix Committed
Status in firmware-sof source package in Noble:
  Fix Committed
Status in alsa-ucm-conf source package in Oracular:
  Fix Released
Status in firmware-sof source package in Oracular:
  Fix Released

Bug description:
  [SRU Justifications]

  ========== firmware-sof ==========
  [Impact]

  Audio doesn't work on Dell new XPS laptops on Intel MTL platforms.

  [Fix]

  Kernel driver, ALSA ucm, and firmware fixes are required. For
  firmware-sof, it's the upstream commit 7d2c7f5ad44d ("Add sof-v2.9 for
  Intel hardware").

  [Test Case]
  1. Install linux-firmware version >= 20240318.git3b128b60-0ubuntu2.1
  2. Install new noble/oracular -proposed alsa UCM conf package
  3. Install 6.10-oem kernel
  4. Go to audio setting to make sure the audio input/output device are not dummy

  [Where problems could occur]
  It's simply an additional tplg file which only new kernel driver knows to how to load.

  ========== alsa-ucm-conf ==========
  [Impact]

  Audio doesn't work on Dell new XPS laptops on Intel MTL platforms.

  [Fix]

  Kernel driver, ALSA ucm, and firmware fixes are required. For alsa-ucm-conf, it requires the following upstream commit
  1. c0a4df603786 ("sof-soundwire: Use one file for speaker codec")
  2. 8e39917518b6 (sof-soundwire: Add basic support for basic cs35l56)
  3. e87dde51d689 (sof-soundwire: Add basic support for cs42l43)

  [Test Case]
  1. Install linux-firmware version >= 20240318.git3b128b60-0ubuntu2.1
  2. Install 6.10-oem kernel
  3. Install new noble/oracular -proposed firmware-sof package
  4. Go to audio setting to make sure the audio input/output device are not dummy

  [Where problems could occur]
  The new alsa UCM file only take effect when new cs35l56 driver and firmware-sof are loaded. The impact are restricted on cs35l56 only.

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