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ACPICA: Add SoundWire File Table (SWFT) signature 

The File Download (FDL) process of SoundWire Class Audio (SDCA) driver,
which provides code/data which may be required by an SDCA device,
utilizes SWFT to obtain that code/data. There is a single SWFT for the
system, and SWFT can contain multiple files (information about the file
as well as its binary contents). The SWFT has a standard ACPI Descriptor
Table Header, followed by SoundWire File definitions as described in
Discovery and Configuration (DisCo) Specification for SoundWire®

Link: https://github.com/acpica/acpica/commit/18c96022
Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250811134505.1162661-1-mstrozek@opensource.cirrus.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Maciej Strozek 2025-08-11 14:45:05 +01:00 committed by Rafael J. Wysocki
parent 1b237f190e
commit ac46f5b6c6
2 changed files with 22 additions and 1 deletions
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2
drivers/acpi/tables.c
View File

@ -408,7 +408,7 @@ static const char table_sigs[][ACPI_NAMESEG_SIZE] __nonstring_array __initconst
ACPI_SIG_PSDT, ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT,
ACPI_SIG_IORT, ACPI_SIG_NFIT, ACPI_SIG_HMAT, ACPI_SIG_PPTT,
ACPI_SIG_NHLT, ACPI_SIG_AEST, ACPI_SIG_CEDT, ACPI_SIG_AGDI,
ACPI_SIG_NBFT };
ACPI_SIG_NBFT, ACPI_SIG_SWFT};
#define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)

21
include/acpi/actbl2.h
View File

@ -57,6 +57,7 @@
#define ACPI_SIG_SDEI "SDEI" /* Software Delegated Exception Interface Table */
#define ACPI_SIG_SDEV "SDEV" /* Secure Devices table */
#define ACPI_SIG_SVKL "SVKL" /* Storage Volume Key Location Table */
#define ACPI_SIG_SWFT "SWFT" /* SoundWire File Table */
#define ACPI_SIG_TDEL "TDEL" /* TD Event Log Table */
/*
@ -3478,6 +3479,26 @@ enum acpi_svkl_format {
ACPI_SVKL_FORMAT_RESERVED = 1 /* 1 and greater are reserved */
};
/*******************************************************************************
* SWFT - SoundWire File Table
*
* Conforms to "Discovery and Configuration (DisCo) Specification for SoundWire"
* Version 2.1, 2 October 2023
*
******************************************************************************/
struct acpi_sw_file {
u16 vendor_id;
u32 file_id;
u16 file_version;
u32 file_length;
u8 data[];
};
struct acpi_table_swft {
struct acpi_table_header header;
struct acpi_sw_file files[];
};
/*******************************************************************************
*
* TDEL - TD-Event Log