Hey,

On Tue, 5 Jan 2021, Arnd Bergmann wrote:

On Mon, Jan 4, 2021 at 4:05 PM Takashi Iwai tiwai@suse.de wrote:

...

As I wrote in another post, a part of the problem is that SOF PCI and ACPI drivers call snd_intel_dsp_driver_probe() unconditionally, even if no Intel driver is bound.

Makes sense. Is there an existing Kconfig that could be used to decide whether the drivers use SND_INTEL_DSP_CONFIG or not?

no, unfortunately not. This is selected per platform in sound/soc/sof/intel/Kconfig. CONFIG_SND_SOC_SOF_INTEL_PCI is close, but there is at least one platform that does not use SND_INTEL_DSP_CONFIG.

According to sof_pci_ids[], all PCI IDs are Intel specific, but I can't tell which ones need the DSP config.

Indeed currently all the ids are Intel ones (and with exception of old Merrifield, all use DSP config). But that's just how it is now.

Could it be part of the device specific driver_data?

This would certainly be a clean way and allow to remove the Intel-specific calls from sof_pci_probe(). As a short-term solution, IS_REACHABLE() seems ok as well.

Br, Kai