This patchset adds ASoC driver support to configure signal processing framework ("AudioReach") which is integral part of Qualcomm next generation audio SDK and will be deployed on upcoming Qualcomm chipsets. It makes use of ASoC Topology to load graphs on to the DSP which is then managed by APM (Audio Processing Manager) service to prepare/start/stop.
Here is simpified high-level block diagram of AudioReach:
___________________________________________________________ | CPU (Application Processor) | | +---------+ +---------+ +---------+ | | | q6apm | | q6apm | | q6afe | | | | dais | <------> | | <-----> | bedais | | | +---------+ +---------+ +---------+ | | ^ ^ | | | | +---------+ | | +---------+ v +---------->|topology | | | | q6prm | +---------+ | | | | | |<-------->| GPR | +---------+ | | +---------+ +---------+ | | ^ | |____________________________|______________________________| | | RPMSG (IPC over GLINK) ____________________________|______________________________ | | | | +-----------------------+ | | | | | | v v q6 (Audio DSP) | |+-----+ +----------------------------------+ | || PRM | | APM (Audio Processing Manager) | | |+-----+ | . Graph Management | | | | . Command Handing | | | | . Event Management | | | | ... | | | +----------------------------------+ | | ^ | |____________________________|______________________________| | | LPASS AIF ____________________________|______________________________ | | Audio I/O | | v | | +--------------------------------------------------+ | | | Audio devices | | | | CODEC | HDMI-TX | PCM | SLIMBUS | I2S |MI2S |...| | | | | | | +--------------------------------------------------+ | |___________________________________________________________|
AudioReach has constructs of sub-graph, container and modules. Each sub-graph can have N containers and each Container can have N Modules and connections between them can be linear or non-linear. An audio function can be realized with one or many connected sub-graphs. There are also control/event paths between modules that can be wired up while building graph to achieve various control mechanism between modules. These concepts of Sub-Graph, Containers and Modules are represented in ASoC topology.
Here is simple I2S graph with a Write Shared Memory and a Volume control module within a single Subgraph (1) with one Container (1) and 5 modules.
____________________________________________________________ | Sub-Graph [1] | | _______________________________________________________ | | | Container [1] | | | | [WR_SH] -> [PCM DEC] -> [PCM CONV] -> [VOL]-> [I2S-EP]| | | |_______________________________________________________| | |____________________________________________________________|
For now this graph is split into two subgraphs to achieve dpcm like below: ________________________________________________ _________________ | Sub-Graph [1] | | Sub-Graph [2] | | ____________________________________________ | | _____________ | | | Container [1] | | | |Container [2]| | | | [WR_SH] -> [PCM DEC] -> [PCM CONV] -> [VOL]| | | | [I2S-EP] | | | |____________________________________________| | | |_____________| | |________________________________________________| |_________________|
_________________ | Sub-Graph [3] | | _____________ | | |Container [3]| | | | [DMA-EP] | | | |_____________| | |_________________|
This patchset adds very minimal support for AudioReach which includes supporting sub-graphs containing CODEC DMA ports and simple PCM Decoder/Encoder and Logger Modules. Additional capabilities will be built over time to expose features offered by AudioReach.
This patchset is Tested on SM8250 SoC based Qualcomm Robotics Platform RB5 and SM9250 MTP with WSA881X Smart Speaker Amplifiers, DMICs connected via VA Macro and WCD938x Codec connected via TX and RX Macro.
Sample WIP ASoC graphs are available at https://git.linaro.org/people/srinivas.kandagatla/audioreach-topology.git/
Thanks, srini
Srinivas Kandagatla (13): soc: dt-bindings: qcom: add gpr bindings soc: qcom: add gpr driver support ASoC: qcom: dt-bindings: add bindings Audio Processing manager ASoC: qcom: audioreach: add basic pkt alloc support ASoC: qcom: audioreach: add q6apm support ASoC: qcom: audioreach: add module configuration command helpers ASoC: qcom: audioreach: add topology support ASoC: qcom: audioreach: add q6apm-dai support ASoC: qcom: audioreach: add bedai support ASoC: qcom: dt-bindings: add bindings for Proxy Resource Manager ASoC: qcom: audioreach: add q6prm support ASoC: qcom: dt-bindings: add audioreach soundcard compatibles ASoC: qcom: sm8250: Add audioreach support
.../bindings/soc/qcom/qcom,gpr.yaml | 74 ++ .../devicetree/bindings/sound/qcom,q6apm.yaml | 72 ++ .../devicetree/bindings/sound/qcom,q6prm.yaml | 43 + .../bindings/sound/qcom,sm8250.yaml | 43 + drivers/soc/qcom/Kconfig | 9 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/gpr.c | 487 ++++++++ include/dt-bindings/soc/qcom,gpr.h | 18 + include/dt-bindings/sound/qcom,q6apm.h | 215 ++++ include/dt-bindings/sound/qcom,q6prm.h | 205 ++++ include/linux/soc/qcom/gpr.h | 127 ++ include/uapi/sound/snd_ar_tokens.h | 200 +++ sound/soc/qcom/Kconfig | 20 + sound/soc/qcom/Makefile | 1 + sound/soc/qcom/audioreach/Makefile | 12 + sound/soc/qcom/audioreach/audioreach.c | 1082 +++++++++++++++++ sound/soc/qcom/audioreach/audioreach.h | 649 ++++++++++ sound/soc/qcom/audioreach/q6apm-bedai.c | 377 ++++++ sound/soc/qcom/audioreach/q6apm-dai.c | 494 ++++++++ sound/soc/qcom/audioreach/q6apm.c | 962 +++++++++++++++ sound/soc/qcom/audioreach/q6apm.h | 171 +++ sound/soc/qcom/audioreach/q6prm.c | 412 +++++++ sound/soc/qcom/audioreach/topology.c | 848 +++++++++++++ sound/soc/qcom/sm8250.c | 144 ++- 24 files changed, 6665 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,gpr.yaml create mode 100644 Documentation/devicetree/bindings/sound/qcom,q6apm.yaml create mode 100644 Documentation/devicetree/bindings/sound/qcom,q6prm.yaml create mode 100644 drivers/soc/qcom/gpr.c create mode 100644 include/dt-bindings/soc/qcom,gpr.h create mode 100644 include/dt-bindings/sound/qcom,q6apm.h create mode 100644 include/dt-bindings/sound/qcom,q6prm.h create mode 100644 include/linux/soc/qcom/gpr.h create mode 100644 include/uapi/sound/snd_ar_tokens.h create mode 100644 sound/soc/qcom/audioreach/Makefile create mode 100644 sound/soc/qcom/audioreach/audioreach.c create mode 100644 sound/soc/qcom/audioreach/audioreach.h create mode 100644 sound/soc/qcom/audioreach/q6apm-bedai.c create mode 100644 sound/soc/qcom/audioreach/q6apm-dai.c create mode 100644 sound/soc/qcom/audioreach/q6apm.c create mode 100644 sound/soc/qcom/audioreach/q6apm.h create mode 100644 sound/soc/qcom/audioreach/q6prm.c create mode 100644 sound/soc/qcom/audioreach/topology.c