Hi all, Changes since v3 [7]: - Mostly refactoring and reorganization, no functional changes. - Refactored DT support for CPU PM domains into a separate patch. (Suggested by Ulf) - Reorganized domain idle state into DT binding, to be more in line with the discussions that followed the last patch submission. (Thanks Brendan, Sudeep, Lorenzo for some really good discussions.) Changes since v2 [5]: - Update PSCI documentation to define OS-Initiated PM domains. - Nifty updates and bug fixes. Thanks Brendan! - Define PSCI PM domains under psci node in 8916 DT. - Documentation updates for domain definitions. - Updated series is at [4]. Changes since v1 [6]: - Use arm,idle-state as the DT binding for domain idle state. - OS-Initated changes to support that and to read arm,psci-suspend-param (Thanks Mark Rutland and Kevin Hilman) - tick_nohz_get_next_wakeup() - suggestions from Thomas Gleixner. - The updated series is at [3]. Changes since RFC-v3 [1]: - Reorganize the patches. Documentations have their own patch. - Moved code around with PSCI OS initiated so they would not have compiler errors in other configuration. - Minor bug fixes with genpd power_on functionality. - Rebased on top of 4.7-rc1 This is the submission of the SoC idle support in the kernel for CPU domains using genpd. The patches were submitted as RFC's earlier, the last of them is [1]. Since the RFC, multiple discussions have happened around making the patches generic across all architectures. For now, the patches address the needs of the ARM community, but sure enough can be extended to support other architectures. Some of the limitations in making this patch generic is the lack of device idle state description in the DT, but that in itself is a bigger topic for a future discussion. The patch has been tested on the 410c Dragonboard and the MTK EVB boards. Both show good power savings when used with OS Initiated PSCI f/w. This entire series can be found at [8]. Thanks, Lina [1]. http://lists.infradead.org/pipermail/linux-arm-kernel/2016-March/412934.html [2]. https://git.linaro.org/people/lina.iyer/linux-next.git/shortlog/refs/heads/genpd-psci-v1 [3]. https://git.linaro.org/people/lina.iyer/linux-next.git/shortlog/refs/heads/genpd-psci-v2 [4]. https://git.linaro.org/people/lina.iyer/linux-next.git/shortlog/refs/heads/genpd-psci-v3 [5]. https://lwn.net/Articles/695987/ [6]. https://lwn.net/Articles/675674/ [7]. http://www.spinics.net/lists/arm-kernel/msg522021.html [8]. https://git.linaro.org/people/lina.iyer/linux-next.git/shortlog/refs/heads/genpd-psci-v4 Axel Haslam (2): PM / Domains: Allow domain power states to be read from DT dt/bindings: Update binding for PM domain idle states Lina Iyer (14): PM / Domains: Abstract genpd locking PM / Domains: Support IRQ safe PM domains PM / doc: Update device documentation for devices in IRQ safe PM domains PM / cpu_domains: Setup PM domains for CPUs/clusters PM / cpu_domains: Initialize CPU PM domains from DT ARM: cpuidle: Add runtime PM support for CPUs timer: Export next wake up of a CPU PM / cpu_domains: Add PM Domain governor for CPUs doc / cpu_domains: Describe CPU PM domains setup and governor drivers: firmware: psci: Allow OS Initiated suspend mode drivers: firmware: psci: Support cluster idle states for OS-Initiated dt/bindings: Add PSCI OS-Initiated PM Domains bindings ARM64: dts: Add PSCI cpuidle support for MSM8916 ARM64: dts: Define CPU power domain for MSM8916 Documentation/devicetree/bindings/arm/psci.txt | 79 ++++ .../devicetree/bindings/power/power_domain.txt | 57 +++ Documentation/power/cpu_domains.txt | 109 +++++ Documentation/power/devices.txt | 12 +- arch/arm64/boot/dts/qcom/msm8916.dtsi | 49 +++ drivers/base/power/Makefile | 1 + drivers/base/power/cpu_domains.c | 459 +++++++++++++++++++++ drivers/base/power/domain.c | 308 ++++++++++++-- drivers/cpuidle/cpuidle-arm.c | 55 +++ drivers/firmware/psci.c | 135 +++++- include/linux/cpu_domains.h | 67 +++ include/linux/pm_domain.h | 24 +- include/linux/tick.h | 7 + include/uapi/linux/psci.h | 5 + kernel/time/tick-sched.c | 11 + 15 files changed, 1314 insertions(+), 64 deletions(-) create mode 100644 Documentation/power/cpu_domains.txt create mode 100644 drivers/base/power/cpu_domains.c create mode 100644 include/linux/cpu_domains.h -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
