ASoC: SOF: Intel: hda: Add module parameter to disable display audio bind

[ujfalusi]

ASoC: SOF: Intel: hda: Add module parameter to disable display audio bind

The SOF audio stack expects working Intel eGPU to probe and to have working
analog audio.
Under special circumstances users or developers can encounter issues of
no i915/Xe driver available and thus the SOF audio card is not probing:
- Booting kernel on a new architecture where the display driver is not yet
  working (cannot even force probed)
- running in virtualized environment without access to eGPU resources
- booting with nomodeset

While the percentage of affected users are small, it can still cause
unreasonable obstacles on their use cases.

With the disable_display_audio_bind=true module parameter the binding can
be disabled to let the SOF stack to probe and provide at least working
analog audio. Obviously the display audio will not work, but that is
expected.

and drop the PTL related patch.

The display audio binding can be disabled with a generic module
parameter, there is no longer a need for the patch:

options snd-sof-intel-hda-generic disable_display_audio_bind=true

[ranj063]

@ujfalusi is the kernel build failure a CI issue?

[ujfalusi]

Hrm:

/srv/home/jenkins/workspace/linux_config_build/linux/sound/soc/sof/intel/hda.c: In function ‘hda_dsp_probe_early’:
/srv/home/jenkins/workspace/linux_config_build/linux/sound/soc/sof/intel/hda.c:713:13: error: ‘disable_display_audio_bind’ undeclared (first use in this function)
  713 |         if (disable_display_audio_bind)
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~
/srv/home/jenkins/workspace/linux_config_build/linux/sound/soc/sof/intel/hda.c:713:13: note: each undeclared identifier is reported only once for each function it appears in
make[10]: *** [/srv/home/jenkins/workspace/linux_config_build/linux/scripts/Makefile.build:229: sound/soc/sof/intel/hda.o] Error 1
make[9]: *** [/srv/home/jenkins/workspace/linux_config_build/linux/scripts/Makefile.build:478: sound/soc/sof/intel] Error 2
make[8]: *** [/srv/home/jenkins/workspace/linux_config_build/linux/scripts/Makefile.build:478: sound/soc/sof] Error 2
  CC [M]  drivers/gpu/drm/i915/display/intel_connector.o
make[7]: *** [/srv/home/jenkins/workspace/linux_config_build/linux/scripts/Makefile.build:478: sound/soc] Error 2
make[6]: *** [/srv/home/jenkins/workspace/linux_config_build/linux/scripts/Makefile.build:478: sound] Error 2
make[6]: *** Waiting for unfinished jobs....

[ujfalusi]

Aarrh, I see, pushing an update and thanks @ranj063 for spotting it!

[ujfalusi]

Changes since v1:

• Moved the disable_display_audio_bind module param declaration outside of the #if IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE), thanks again @ranj063 for noticing it!