On Friday, March 20, 2020 8:27:27 PM CET Cezary Rojewski wrote:
> NHLT (Non-HDAudio Link Table) provides configuration of audio
> endpoints for Intel SST (Smart Sound Technology) DSP products. Similarly
> to other ACPI tables, data provided by BIOS may not describe it
> correctly, thus overriding is required.
>
> ACPI override mechanism checks for unknown signature before proceeding.
> Update known signatures array to support NHLT.
>
> Cc: Erik Kaneda <erik.kaneda@xxxxxxxxx>
> Cc: Robert Moore <robert.moore@xxxxxxxxx>
> Cc: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> Signed-off-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
> ---
> drivers/acpi/tables.c | 2 +-
> include/acpi/actbl2.h | 1 +
> 2 files changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
> index 180ac4329763..0e905c3d1645 100644
> --- a/drivers/acpi/tables.c
> +++ b/drivers/acpi/tables.c
> @@ -501,7 +501,7 @@ static const char * const table_sigs[] = {
> ACPI_SIG_WDDT, ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT,
> ACPI_SIG_PSDT, ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT,
> ACPI_SIG_IORT, ACPI_SIG_NFIT, ACPI_SIG_HMAT, ACPI_SIG_PPTT,
> - NULL };
> + ACPI_SIG_NHLT, NULL };
>
> #define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)
>
> diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
> index e45ced27f4c3..876ccf50ec36 100644
> --- a/include/acpi/actbl2.h
> +++ b/include/acpi/actbl2.h
> @@ -43,6 +43,7 @@
> #define ACPI_SIG_SBST "SBST" /* Smart Battery Specification Table */
> #define ACPI_SIG_SDEI "SDEI" /* Software Delegated Exception Interface Table */
> #define ACPI_SIG_SDEV "SDEV" /* Secure Devices table */
> +#define ACPI_SIG_NHLT "NHLT" /* Non-HDAudio Link Table */
>
> /*
> * All tables must be byte-packed to match the ACPI specification, since
>
This should go in through the ACPICA upstream IMO.
