Wildcat Lake: No SoundWire machine driver for part 0x6244 (Lecoo N140A)

[Zepharin]

Hardware

• Laptop: Lecoo N140A (BIOS N140ABIOS.01.12)
• Platform: Intel Wildcat Lake (Panther Lake)
• CPU: Intel Core 5 315
• Audio DSP: 8086:4d28 (Wildcat Lake)
• HDMI Codec: Intel Wildcat Lake HDMI (0x80862823)

Software

• OS: Fedora 44
• Kernel: 7.0.12-201.fc44.x86_64
• SOF Firmware: v2.14.1.1 (wcl/sof-wcl.ri)
• Topology: sof-hda-generic-idisp.tplg

Problem

Built-in speakers do not work — no analog audio output device available. Only HDMI/DP outputs are visible:

$ aplay -l
card 0: sofhdadsp sof-hda-dsp, device 3: HDMI1
card 0: sofhdadsp sof-hda-dsp, device 4: HDMI2
card 0: sofhdadsp sof-hda-dsp, device 5: HDMI3

Root Cause

A SoundWire audio device is detected on link 3 but no machine driver matches:

sof-audio-pci-intel-ptl 0000:00:1f.3: SoundWire enabled, using SOF driver
sof-audio-pci-intel-ptl 0000:00:1f.3: No SoundWire machine driver found
sof-audio-pci-intel-ptl 0000:00:1f.3: link 3 mfg_id 0x0496 part_id 0x6244 version 0x3
sof-audio-pci-intel-ptl 0000:00:1f.3: part id 0x6244 is not supported
sof-audio-pci-intel-ptl 0000:00:1f.3: hda codecs found, mask 4
sof-audio-pci-intel-ptl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
sof-audio-pci-intel-ptl 0000:00:1f.3: DMICs detected in NHLT tables: 0

SoundWire device on bus: sdw:m0496p6244v03c01
No driver is bound to this device (/sys/bus/soundwire/devices/sdw:0:3:0496:6244:01/driver is empty).

Because no SoundWire machine driver matches, the SOF driver falls back to skl_hda_dsp_generic which only handles the HDMI codec (mask 0x4 = address 2 only).

Request

A SoundWire machine driver (or quirk entry) is needed for part_id 0x6244 from mfg_id 0x0496 to enable the built-in speakers on this Wildcat Lake laptop.