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

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Chris Chiu (mschiu77):

[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.

** Affects: alsa-ucm-conf (Ubuntu)
     Importance: Undecided
         Status: In Progress

** Affects: firmware-sof (Ubuntu)
     Importance: Undecided
         Status: In Progress

** Affects: alsa-ucm-conf (Ubuntu Noble)
     Importance: Undecided
         Status: In Progress

** Affects: firmware-sof (Ubuntu Noble)
     Importance: Undecided
         Status: In Progress

** Affects: alsa-ucm-conf (Ubuntu Oracular)
     Importance: Undecided
         Status: In Progress

** Affects: firmware-sof (Ubuntu Oracular)
     Importance: Undecided
         Status: In Progress

-- 
Soundwire support for CS42L43 and CS35L56 on Intel MTL
https://bugs.launchpad.net/bugs/2069760
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