Changes in v2: - Convert Documentation to YAML. - Address stephen's comments from v1. - Use debugfs instead of sysfs. - Add sc7180 dts changes for sleep stats - Add defconfig changes to enable driver - Include subsystem stats from [1] in this single stats driver. - Address stephen's comments from [1] - Update cover letter inline to mention [1] Qualcomm Technologies, Inc. (QTI)'s chipsets support SoC level low power modes. SoCs Always On Processor/Resource Power Manager produces statistics of the SoC sleep modes involving lowering or powering down of the rails and the oscillator clock. Additionally multiple subsystems present on SoC like modem, spss, adsp, cdsp maintains their low power mode statistics in shared memory (SMEM). Statistics includes SoC sleep mode type, number of times LPM entered, time of last entry, exit, and accumulated sleep duration in seconds. This series adds a driver to read the stats and export to debugfs. [1] https://lore.kernel.org/patchwork/patch/1149381/ Mahesh Sivasubramanian (2): dt-bindings: Introduce soc sleep stats bindings for Qualcomm SoCs soc: qcom: Add SoC sleep stats driver Maulik Shah (2): arm64: dts: qcom: sc7180: Enable soc sleep stats arm64: defconfig: Enable SoC sleep stats driver for Qualcomm .../bindings/soc/qcom/soc-sleep-stats.yaml | 47 ++++ arch/arm64/boot/dts/qcom/sc7180.dtsi | 5 + arch/arm64/configs/defconfig | 1 + drivers/soc/qcom/Kconfig | 10 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/soc_sleep_stats.c | 279 +++++++++++++++++++++ 6 files changed, 343 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/soc-sleep-stats.yaml create mode 100644 drivers/soc/qcom/soc_sleep_stats.c -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
