On newer Qualcomm Techonologies Inc's SoCs like the SDM845, the GIC is in a power domain that can be powered off when not needed. Interrupts that need to be sensed even when the GIC is powered off, are routed through an interrupt controller in an always-on domain called the Power Domain Controller a.k.a PDC. This series adds support for the PDC's interrupt controller.
Please consider reviewing these patches. Lina Iyer (4): drivers: irqchip: pdc: add support for PDC interrupt controller dt-bindings/interrupt-controller: pdc: descibe PDC device binding drivers: irqchip: pdc: log PDC info in FTRACE drivers: irqchip: qcom: add pin information for SDM845 .../bindings/interrupt-controller/qcom,pdc.txt | 55 ++++ drivers/irqchip/Kconfig | 9 + drivers/irqchip/Makefile | 1 + drivers/irqchip/qcom-pdc-sdm845.c | 130 +++++++++ drivers/irqchip/qcom-pdc.c | 291 +++++++++++++++++++++ drivers/irqchip/qcom-pdc.h | 31 +++ include/trace/events/pdc.h | 50 ++++ 7 files changed, 567 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/qcom,pdc.txt create mode 100644 drivers/irqchip/qcom-pdc-sdm845.c create mode 100644 drivers/irqchip/qcom-pdc.c create mode 100644 drivers/irqchip/qcom-pdc.h create mode 100644 include/trace/events/pdc.h -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
