mirror of https://gitee.com/openkylin/linux.git
9ffeb6d08c
Current PSCI code handles idle state entry through the psci_cpu_suspend_enter() API, that takes an idle state index as a parameter and convert the index into a previously initialized power_state parameter before calling the PSCI.CPU_SUSPEND() with it. This is unwieldly, since it forces the PSCI firmware layer to keep track of power_state parameter for every idle state so that the index->power_state conversion can be made in the PSCI firmware layer instead of the CPUidle driver implementations. Move the power_state handling out of drivers/firmware/psci into the respective ACPI/DT PSCI CPUidle backends and convert the psci_cpu_suspend_enter() API to get the power_state parameter as input, which makes it closer to its firmware interface PSCI.CPU_SUSPEND() API. A notable side effect is that the PSCI ACPI/DT CPUidle backends now can directly handle (and if needed update) power_state parameters before handing them over to the PSCI firmware interface to trigger PSCI.CPU_SUSPEND() calls. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Signed-off-by: Will Deacon <will@kernel.org> |
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| .. | ||
| governors | ||
| Kconfig | ||
| Kconfig.arm | ||
| Kconfig.mips | ||
| Kconfig.powerpc | ||
| Makefile | ||
| coupled.c | ||
| cpuidle-arm.c | ||
| cpuidle-at91.c | ||
| cpuidle-big_little.c | ||
| cpuidle-calxeda.c | ||
| cpuidle-clps711x.c | ||
| cpuidle-cps.c | ||
| cpuidle-exynos.c | ||
| cpuidle-kirkwood.c | ||
| cpuidle-mvebu-v7.c | ||
| cpuidle-powernv.c | ||
| cpuidle-psci.c | ||
| cpuidle-pseries.c | ||
| cpuidle-ux500.c | ||
| cpuidle-zynq.c | ||
| cpuidle.c | ||
| cpuidle.h | ||
| driver.c | ||
| dt_idle_states.c | ||
| dt_idle_states.h | ||
| governor.c | ||
| poll_state.c | ||
| sysfs.c | ||