** ** NOTE: To "view the full picture", please look at the following ** patch series: ** https://patchwork.kernel.org/project/linux-arm-msm/list/?series=413355 ** This is a subset of that series. ** Changes in v4: - Huge patch series has been split for better reviewability, as suggested by Bjorn Changes in v3: - Rebased (no changes - was in previous series' v3) Changes in v2: - Fixed MSM8998 SAW parameters on SPM driver Tested on the following smartphones: - Sony Xperia XA2 (SDM630) - Sony Xperia XA2 Ultra (SDM630) - Sony Xperia 10 (SDM630) - Sony Xperia XZ Premium (MSM8998) - F(x)Tec Pro 1 (MSM8998) This is a component that we can find on very old chips, like MSM8974; there, it has been used to actually do the power scaling basically "on its own" - sending the cores in a specific sleep mode to save power. On the newer ones, including MSM8998, SDM630, 660 and others, it is still present! Though, this time, it's being used for the cluster caches and it has a different firmware (and maybe it's also slightly different HW), implementing the SAWv4.1 set and getting controlled *not by the OS* but by other controllers in the SoC (like the OSM). Contrary from MSM8974 and the like, this new version of the SPM just requires us to set the initial parameters for AVS and *nothing else*, as its states will be totally managed internally. AngeloGioacchino Del Regno (3): cpuidle: qcom_spm: Detach state machine from main SPM handling soc: qcom: spm: Implement support for SAWv4.1, SDM630/660 L2 AVS soc: qcom: spm: Add compatible for MSM8998 SAWv4.1 L2 drivers/cpuidle/Kconfig.arm | 1 + drivers/cpuidle/cpuidle-qcom-spm.c | 294 ++++++----------------------- drivers/soc/qcom/Kconfig | 9 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/spm.c | 240 +++++++++++++++++++++++ include/soc/qcom/spm.h | 45 +++++ 6 files changed, 354 insertions(+), 236 deletions(-) create mode 100644 drivers/soc/qcom/spm.c create mode 100644 include/soc/qcom/spm.h -- 2.30.0
