Hi,
Changes since v2: - correct the fixes tag for the second path
Changes since v1: - correct SHAs for fixes tags - add Cc stable tag
We support bytes control type for set and get, but these are module specific controls and there is no way to handle notifications from them in a generic way. Each control have module specific param_id and this param_id is only valid in the module's scope, other modules might use the same id for different functions for example.
This series will add a new generic control type, similar to the existing ones for ENUM and SWITCH, which can be used to create bytes controls which can send notifications from firmware on change.
The new param_id is 202 and the sof_ipc4_control_msg_payload is updated to describe bytes payload also.
On set, the payload must include the sof_ipc4_control_msg_payload struct with the control's ID and data size, followed by the data.
On get, the kernel needs to send the sof_ipc4_control_msg_payload struct along with the LARGE_CONFIG_GET message as payload with the ID of the control that needs to be retrieved. The raw data is received back without additional header.
A notification might contain data, in this case the num_elems reflects the size in bytes, or without data. If no data is received then the control is marked as dirty and on read the kernel will refresh the data from firmware.
The series includes mandatory fixes for existing code and adds support for sending payload with LARGE_CONFIG_GET when the param_id is either generic ENUM, SWITCH or BYTES control.
Regards, Peter --- Peter Ujfalusi (8): ASoC: SOF: ipc4-control: If there is no data do not send bytes update ASoC: SOF: ipc4-topology: Correct the allocation size for bytes controls ASoC: SOF: ipc4-control: Use the correct size for scontrol->ipc_control_data ASoC: SOF: ipc4-control: Keep the payload size up to date ASoC: SOF: ipc4-topology: Set initial param_id for bytes control type ASoC: SOF: ipc4: Support for sending payload along with LARGE_CONFIG_GET ASoC: SOF: ipc4: Add definition for generic bytes control ASoC: SOF: ipc4-control: Add support for generic bytes control
sound/soc/sof/ipc4-control.c | 197 ++++++++++++++++++++++++++++++---- sound/soc/sof/ipc4-topology.c | 36 +++++-- sound/soc/sof/ipc4-topology.h | 9 +- sound/soc/sof/ipc4.c | 45 +++++++- 4 files changed, 252 insertions(+), 35 deletions(-)