Qualcomm SoCs (starting with MSM8998) allow for multiple protection domains (PDs) to run on the same Q6 sub-system. This allows for services like AVS AUDIO to have their own separate address space and crash/recover without disrupting the other PDs running on the same Q6 ADSP. This patch series introduces pdr helper library and adds PD tracking functionality for "avs/audio" allowing apr services to register themselves asynchronously once the dependent PDs are up. V2: * fixup pd_status callback to return void. * return 0 from pdr_get_domain_list on success. * introduce status_lock to linearize the pd_status reported back to the clients. * use the correct service name length across various string operations performed. * service locator will now schedule the pending lookups registered when it comes up. * other minor cleanups that Bjorn suggested. * use pr_warn to indicate that the wait for service locator timed out. * add Bjorn/Srini's "Reviewed-by" for the dt-bindings. To Do: * Add support for pd tracking in fastrpc driver. Sibi Sankar (3): soc: qcom: Introduce Protection Domain Restart helpers dt-bindings: soc: qcom: apr: Add protection domain bindings soc: qcom: apr: Add avs/audio tracking functionality .../devicetree/bindings/soc/qcom/qcom,apr.txt | 59 ++ drivers/soc/qcom/Kconfig | 6 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/apr.c | 100 ++- drivers/soc/qcom/pdr_interface.c | 691 ++++++++++++++++++ drivers/soc/qcom/pdr_internal.h | 375 ++++++++++ include/linux/soc/qcom/apr.h | 1 + include/linux/soc/qcom/pdr.h | 105 +++ include/linux/soc/qcom/qmi.h | 1 + 9 files changed, 1328 insertions(+), 11 deletions(-) create mode 100644 drivers/soc/qcom/pdr_interface.c create mode 100644 drivers/soc/qcom/pdr_internal.h create mode 100644 include/linux/soc/qcom/pdr.h -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
