On Mon, 08 Feb 2021 14:59:19 +0100, Hans de Goede wrote: > > The kernel has 2 drivers for the Low Power Engine audio-block on > Bay- and Cherry-Trail SoCs. The old SST driver and the new SOF > driver. If both drivers are enabled then the kernel will default > to using the old SST driver, unless told otherwise through the > snd_intel_dspcfg.dsp_driver module-parameter. > > Add a boolean SND_INTEL_BYT_PREFER_SOF Kconfig option, which when set to Y > will make the kernel default to the new SOF driver instead. > The option defaults to n, preserving the current behavior. > > Making this configurable will help distributions such as Fedora: > https://fedoraproject.org/w/index.php?title=Changes/SofDefaultForIntelLpe > to test using SOF on BYT/CHT during the transition phase where we > have both drivers (eventually the old driver and this option will > be removed). > > Note that this drops the acpi_config_table[] containing 2 entries per ACPI > hardware-id if both drivers are enabled. snd_intel_acpi_dsp_find_config() > will always return the first hit, so we only need a single entry with the > flags value set depending on the Kconfig settings. > > Suggested-by: Takashi Iwai <tiwai@xxxxxxx> > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > --- > Changes in v2: > - Rework following Takashi's suggestions Applied now. Thanks. Takashi
