Qualcomm Generic Packet router aka GPR is the IPC mechanism found in AudioReach next generation signal processing framework to perform command and response messages between various processors.
GPR has concepts of static and dynamic port, all static services like APM (Audio Processing Manager), PRM (Proxy resource manager) have fixed port numbers where as dynamic services like graphs have dynamic port numbers which are allocated at runtime. All GPR packet messages will have source and destination domain and port along with opcode and payload.
This support is added using existing APR driver to reuse most of the code.
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org Reviewed-by: Rob Herring robh@kernel.org --- .../bindings/soc/qcom/qcom,apr.yaml | 41 +++++++++++++++---- include/dt-bindings/soc/qcom,gpr.h | 19 +++++++++ 2 files changed, 53 insertions(+), 7 deletions(-) create mode 100644 include/dt-bindings/soc/qcom,gpr.h
diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,apr.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,apr.yaml index bfe04fca8aa3..028c5d105adb 100644 --- a/Documentation/devicetree/bindings/soc/qcom/qcom,apr.yaml +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,apr.yaml @@ -4,20 +4,21 @@ $id: "http://devicetree.org/schemas/soc/qcom/qcom,apr.yaml#" $schema: "http://devicetree.org/meta-schemas/core.yaml#"
-title: Qualcomm APR (Asynchronous Packet Router) binding +title: Qualcomm APR/GPR (Asynchronous/Generic Packet Router) binding
maintainers: - Srinivas Kandagatla srinivas.kandagatla@linaro.org
description: | - This binding describes the Qualcomm APR, APR is a IPC protocol for - communication between Application processor and QDSP. APR is mainly + This binding describes the Qualcomm APR/GPR, APR/GPR is a IPC protocol for + communication between Application processor and QDSP. APR/GPR is mainly used for audio/voice services on the QDSP.
properties: compatible: enum: - qcom,apr-v2 + - qcom,gpr
qcom,apr-domain: $ref: /schemas/types.yaml#/definitions/uint32 @@ -46,6 +47,10 @@ properties: 5 = Application processor Domain 6 = Modem2 Domain 7 = Application Processor2 Domain + Selects the processor domain for gpr + 1 = Modem Domain + 2 = Audio DSP Domain + 3 = Application Processor Domain
'#address-cells': const: 1 @@ -53,12 +58,12 @@ properties: '#size-cells': const: 0
-#APR Services +#APR/GPR Services patternProperties: - "^service@[3-9a-d]$": + "^service@[1-9a-d]$": type: object description: - APR node's client devices use subnodes for desired static port services. + APR/GPR node's client devices use subnodes for desired static port services.
properties: compatible: @@ -67,9 +72,11 @@ patternProperties: - qcom,q6asm - qcom,q6afe - qcom,q6adm + - qcom,q6apm + - qcom,q6prm
reg: - minimum: 3 + minimum: 1 maximum: 13 description: APR Service ID @@ -84,6 +91,11 @@ patternProperties: 11 = Core voice processor. 12 = Ultrasound stream manager. 13 = Listen stream manager. + GPR Service ID + 1 = Audio Process Manager Service + 2 = Proxy Resource Manager Service. + 3 = AMDB Service. + 4 = Voice processing manager.
qcom,protection-domain: $ref: /schemas/types.yaml#/definitions/string-array @@ -148,3 +160,18 @@ examples: qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd"; }; }; + + - | + #include <dt-bindings/soc/qcom,gpr.h> + gpr { + compatible = "qcom,gpr"; + qcom,domain = <GPR_DOMAIN_ID_ADSP>; + #address-cells = <1>; + #size-cells = <0>; + + service@1 { + compatible = "qcom,q6apm"; + reg = <GPR_APM_MODULE_IID>; + qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd"; + }; + }; diff --git a/include/dt-bindings/soc/qcom,gpr.h b/include/dt-bindings/soc/qcom,gpr.h new file mode 100644 index 000000000000..3107da59319c --- /dev/null +++ b/include/dt-bindings/soc/qcom,gpr.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ + +#ifndef __DT_BINDINGS_QCOM_GPR_H +#define __DT_BINDINGS_QCOM_GPR_H + +/* DOMAINS */ + +#define GPR_DOMAIN_ID_MODEM 1 +#define GPR_DOMAIN_ID_ADSP 2 +#define GPR_DOMAIN_ID_APPS 3 + +/* Static Services */ + +#define GPR_APM_MODULE_IID 1 +#define GPR_PRM_MODULE_IID 2 +#define GPR_AMDB_MODULE_IID 3 +#define GPR_VCPM_MODULE_IID 4 + +#endif /* __DT_BINDINGS_QCOM_GPR_H */