From: Maciej Strozek Date: Mon, 11 Aug 2025 13:45:05 +0000 (+0100) Subject: ACPICA: Add SoundWire File Table (SWFT) signature X-Git-Tag: v6.18-rc1~151^2~4^2~16 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ac46f5b6c6614668727732e117842c9fa7a42c19;p=thirdparty%2Fkernel%2Flinux.git 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 Reviewed-by: Charles Keepax Link: https://patch.msgid.link/20250811134505.1162661-1-mstrozek@opensource.cirrus.com Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index fa9bb8c8ce953..57fc8bc56166b 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -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) diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h index 048f5f47f8b88..f726bce3eb849 100644 --- a/include/acpi/actbl2.h +++ b/include/acpi/actbl2.h @@ -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