Soundwire support for CS42L43 and CS35L56 on Intel MTL

[Chris Chiu]

[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 with the FW files from upstream https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=57077702373e7ef40f0ca197724428d614bd92f8
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 with the FW files from upstream https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=57077702373e7ef40f0ca197724428d614bd92f8
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.

[Chris Chiu (mschiu77)]

MR proposed https://code.launchpad.net/~mschiu77/ubuntu/+source/firmware-sof/+git/firmware-sof/+merge/467749

PPA https://launchpad.net/~mschiu77/+archive/ubuntu/lp2069760-noble provided here

[Chris Chiu (mschiu77)]

Will push a fix for the MR and PPA to coordinate with https://bugs.launchpad.net/ubuntu/+source/firmware-sof/+bug/2069417

[Chris Chiu (mschiu77)]

Force push the MR https://code.launchpad.net/~mschiu77/ubuntu/+source/firmware-sof/+git/firmware-sof/+merge/467749.
PPA https://launchpad.net/~mschiu77/+archive/ubuntu/lp2069760-n provided here.

[Chris Chiu (mschiu77)]

MR for alsa-ucm-conf proposed on
https://code.launchpad.net/~mschiu77/ubuntu/+source/alsa-ucm-conf/+git/alsa-ucm-conf/+merge/468604

PPA is also ready on https://launchpad.net/~mschiu77/+archive/ubuntu/lp2069760-n

[Chris Chiu (mschiu77)]

MR for firmware-sof on Oracular
https://code.launchpad.net/~mschiu77/ubuntu/+source/firmware-sof/+git/firmware-sof/+merge/468771

MR for alsa-ucm-conf on Oracular
https://code.launchpad.net/~mschiu77/ubuntu/+source/alsa-ucm-conf/+git/alsa-ucm-conf/+merge/468773

PPA ready on https://launchpad.net/~mschiu77/+archive/ubuntu/lp2069760-o