kernel/linux.git/include/sound/sdca.h, branch v7.2-rc1

ASoC: SDCA: Support devices with multiple functions of identical type

2026-05-04T13:24:42+00:00

It is possible that SDCAs devices might have multiple functions of the same type, as the entity names within a function are defined by the specification it is very likely such a device will have duplicate entities. This causes problems where DAIs and ALSA controls end up with clashing names. This can be handled by adding the function address into the names to ensure uniqueness, although, ideally this would have been included from the start. User-space already has UCM using the current control names, so as a compromise the first function of a given type will use the raw entity names, then duplicates will get an added function address. Reviewed-by: Pierre-Louis Bossart Signed-off-by: Charles Keepax Link: https://patch.msgid.link/20260430150931.2025953-4-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown

ASoC: SDCA: add function devices

2025-11-20T17:22:59+00:00

Use the auxiliary bus to register/unregister subdevices for each function. Each function will be handled with a separate driver, matched using a name. If a vendor wants to override a specific function driver, they could use a custom name to match with a custom function driver. Signed-off-by: Pierre-Louis Bossart Tested-by: Bard Liao Reviewed-by: Maciej Strozek Reviewed-by: Peter Ujfalusi Tested-by: Richard Fitzgerald Signed-off-by: Charles Keepax Link: https://patch.msgid.link/20251120153023.2105663-12-ckeepax@opensource.cirrus.com Reviewed-by: Vinod Koul Signed-off-by: Mark Brown

ASoC: SDCA: Add missing forward declaration in header

2025-11-20T17:22:51+00:00

The structure sdca_function_desc contains a fwnode_handle which is undefined if the user doesn't pull in an appropriate header. Add a forward declaration to avoid this. Fixes: 996bf834d0b6 ("ASoC: SDCA: Add code to parse Function information") Tested-by: Bard Liao Reviewed-by: Maciej Strozek Reviewed-by: Peter Ujfalusi Tested-by: Richard Fitzgerald Signed-off-by: Charles Keepax Link: https://patch.msgid.link/20251120153023.2105663-4-ckeepax@opensource.cirrus.com Reviewed-by: Vinod Koul Signed-off-by: Mark Brown

ASoC: SDCA: Add SDCA FDL data parsing

2025-10-27T15:31:23+00:00

Add parsing of ACPI DisCo information specific to FDL (File DownLoad). DisCo contains a list of File Sets which can be requested by the device and within each of those a list of individual files to be downloaded to the device. Optionally the contents of the files may also be present in a special ACPI table, called SWFT (SoundWire File Table). Reviewed-by: Bard Liao Signed-off-by: Maciej Strozek Signed-off-by: Charles Keepax Reviewed-by: Pierre-Louis Bossart Link: https://patch.msgid.link/20251020155512.353774-14-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown

ASoC: SDCA: Add quirk for incorrect function types for 3 systems

2025-09-02T09:50:29+00:00

Certain systems have CS42L43 DisCo that claims to conform to version 0.6.28 but uses the function types from the 1.0 spec. Add a quirk as a workaround. Closes: https://github.com/thesofproject/linux/issues/5515 Cc: stable@vger.kernel.org Signed-off-by: Maciej Strozek Reviewed-by: Pierre-Louis Bossart Link: https://patch.msgid.link/20250901151518.3197941-1-mstrozek@opensource.cirrus.com Signed-off-by: Mark Brown

ASoC: SDCA: Add code to parse Function information

2025-02-07T17:34:01+00:00

Add a helper function to parse all the Function and Entity information from ACPI. In SDCA each device may have several Functions and each corresponds to a specific audio capability such as say amplifier playback or microphone capture. Each Function then contains a number of Entities that represent individual parts of the audio signal chain and are linked together in a graph similar to DAPM. Signed-off-by: Pierre-Louis Bossart Signed-off-by: Charles Keepax Reviewed-by: Pierre-Louis Bossart Link: https://patch.msgid.link/20250205113801.3699902-3-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown

ASoC: SDCA: Minor formatting and naming tweaks

2025-02-07T17:34:00+00:00

Fix up some variable/struct member naming, add some missing kerneldoc and fix some minor formatting/whitespace issues. Signed-off-by: Charles Keepax Reviewed-by: Pierre-Louis Bossart Link: https://patch.msgid.link/20250205113801.3699902-2-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown

ASoC: SDCA: Add bounds check for function address

2024-12-24T22:44:55+00:00

SDCA only supports 3-bits for the function address, but the ACPI value is 64-bits. Update the code that parses this to do a bounds check and error out on invalid addresses. Currently, an invalid address would truncate to the bottom 3-bits when used and thus use a likely incorrect address. With the bounds check, it is also now safe to shrink the size of the adr member of sdca_function_desc to a u8 and rearrange the struct members to pack better with the new size of adr. Signed-off-by: Charles Keepax Link: https://patch.msgid.link/20241220173516.907406-3-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown

ASoC: SDCA: Add missing header includes

2024-12-24T22:44:53+00:00

Several of the SDCA files don't include all the headers they use locally. These are included by the point of use through other headers, so it is not currently causing any issues. However, files should directly include things they directly use, so add the missing header includes. Signed-off-by: Charles Keepax Link: https://patch.msgid.link/20241220173516.907406-1-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown

ASoC: SDCA: add quirk function for RT712_VB match

2024-10-17T17:42:13+00:00

Add a generic match function for quirks, chances are we are going to have lots of those... Signed-off-by: Pierre-Louis Bossart Reviewed-by: Péter Ujfalusi Signed-off-by: Bard Liao Link: https://patch.msgid.link/20241016102333.294448-6-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown