This is another try at making the unused domain remain enabled until sync state of the provider. There have been already few attempts. Last one is [1]. This new approach comes after a discussion on the mentioned mail thread with Saravana and Ulf. The suggestion there was to move this to the genpd core. This new approach, first is adding the support for 'unknown' initial state of a domain, then uses 'boot status' to make decisions whether to power off a unused domain on late initcall or assume it will be powered off on the provider's sync state callback, if it has one registered. In order to make use of the newly added 'unknown' state, we need to update all the calls to pm_genpd_init to pass one of the 'on', 'off' or 'unknown' states. [1] https://lore.kernel.org/r/20230327193829.3756640-1-abel.vesa@xxxxxxxxxx Abel Vesa (2): PM: domains: Expand initial state of domain to support unknown state PM: domains: Skip disabling unused until sync state arch/arm/mach-s3c/pm-s3c64xx.c | 4 +- arch/arm/mach-ux500/pm_domains.c | 2 +- drivers/base/power/domain.c | 62 +++++++++++++++++++--- drivers/clk/davinci/psc.c | 3 +- drivers/clk/mmp/pwr-island.c | 2 +- drivers/clk/qcom/gdsc.c | 2 +- drivers/clk/renesas/clk-mstp.c | 2 +- drivers/clk/renesas/r9a06g032-clocks.c | 2 +- drivers/clk/renesas/renesas-cpg-mssr.c | 2 +- drivers/clk/renesas/rzg2l-cpg.c | 2 +- drivers/cpuidle/cpuidle-psci-domain.c | 2 +- drivers/cpuidle/cpuidle-riscv-sbi.c | 2 +- drivers/firmware/arm_scmi/scmi_pm_domain.c | 2 +- drivers/firmware/imx/scu-pd.c | 3 +- drivers/firmware/scpi_pm_domain.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 2 +- drivers/irqchip/irq-qcom-mpm.c | 2 +- drivers/soc/actions/owl-sps.c | 2 +- drivers/soc/amlogic/meson-ee-pwrc.c | 7 +-- drivers/soc/amlogic/meson-gx-pwrc-vpu.c | 3 +- drivers/soc/amlogic/meson-secure-pwrc.c | 5 +- drivers/soc/apple/apple-pmgr-pwrstate.c | 2 +- drivers/soc/bcm/bcm2835-power.c | 2 +- drivers/soc/bcm/bcm63xx/bcm-pmb.c | 2 +- drivers/soc/bcm/bcm63xx/bcm63xx-power.c | 3 +- drivers/soc/bcm/raspberrypi-power.c | 2 +- drivers/soc/dove/pmu.c | 4 +- drivers/soc/imx/gpc.c | 4 +- drivers/soc/imx/gpcv2.c | 2 +- drivers/soc/imx/imx8m-blk-ctrl.c | 2 +- drivers/soc/imx/imx8mp-blk-ctrl.c | 2 +- drivers/soc/imx/imx93-blk-ctrl.c | 2 +- drivers/soc/imx/imx93-pd.c | 3 +- drivers/soc/mediatek/mtk-pm-domains.c | 4 +- drivers/soc/mediatek/mtk-scpsys.c | 2 +- drivers/soc/qcom/cpr.c | 2 +- drivers/soc/qcom/rpmhpd.c | 2 +- drivers/soc/qcom/rpmpd.c | 2 +- drivers/soc/renesas/rcar-gen4-sysc.c | 2 +- drivers/soc/renesas/rcar-sysc.c | 2 +- drivers/soc/renesas/rmobile-sysc.c | 2 +- drivers/soc/rockchip/pm_domains.c | 3 +- drivers/soc/samsung/pm_domains.c | 2 +- drivers/soc/starfive/jh71xx_pmu.c | 3 +- drivers/soc/sunxi/sun20i-ppu.c | 6 ++- drivers/soc/tegra/pmc.c | 5 +- drivers/soc/tegra/powergate-bpmp.c | 3 +- drivers/soc/ti/omap_prm.c | 2 +- drivers/soc/ti/ti_sci_pm_domains.c | 2 +- drivers/soc/xilinx/zynqmp_pm_domains.c | 2 +- include/linux/pm_domain.h | 12 ++++- 51 files changed, 140 insertions(+), 63 deletions(-) -- 2.34.1
