> +/* Values for link_type field above */ > + > +#define ACPI_NHLT_LINKTYPE_HDA 0 > +#define ACPI_NHLT_LINKTYPE_DSP 1 > +#define ACPI_NHLT_LINKTYPE_PDM 2 > +#define ACPI_NHLT_LINKTYPE_SSP 3 > +#define ACPI_NHLT_LINKTYPE_SLIMBUS 4 > +#define ACPI_NHLT_LINKTYPE_SDW 5 > +#define ACPI_NHLT_LINKTYPE_UAOL 6 More than half of those values are not used. Is there really any benefit in exposing them? NHLT is really only useful for SSP and PDM... > + > +/* Values for device_id field above */ > + > +#define ACPI_NHLT_DEVICEID_DMIC 0xAE20 > +#define ACPI_NHLT_DEVICEID_BT 0xAE30 > +#define ACPI_NHLT_DEVICEID_I2S 0xAE34 > + > +/* Values for device_type field above */ > + > +/* Device types unique to endpoint of link_type=PDM */ > +#define ACPI_NHLT_DEVICETYPE_PDM 0 > +#define ACPI_NHLT_DEVICETYPE_PDM_SKL 1 I never understood this _SKL part. is this used? > +/* Device types unique to endpoint of link_type=SSP */ > +#define ACPI_NHLT_DEVICETYPE_BT 0 > +#define ACPI_NHLT_DEVICETYPE_FM 1 > +#define ACPI_NHLT_DEVICETYPE_MODEM 2 > +#define ACPI_NHLT_DEVICETYPE_CODEC 4
