diff options
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/Makefile | 4 | ||||
| -rw-r--r-- | drivers/cpuidle/cpuidle-psci-domain.c | 31 | ||||
| -rw-r--r-- | drivers/cpuidle/cpuidle-psci.h | 12 |
3 files changed, 46 insertions, 1 deletions
diff --git a/drivers/cpuidle/Makefile b/drivers/cpuidle/Makefile index ee70d5cc5b99..cc8c769d7fa9 100644 --- a/drivers/cpuidle/Makefile +++ b/drivers/cpuidle/Makefile @@ -21,7 +21,9 @@ obj-$(CONFIG_ARM_U8500_CPUIDLE) += cpuidle-ux500.o obj-$(CONFIG_ARM_AT91_CPUIDLE) += cpuidle-at91.o obj-$(CONFIG_ARM_EXYNOS_CPUIDLE) += cpuidle-exynos.o obj-$(CONFIG_ARM_CPUIDLE) += cpuidle-arm.o -obj-$(CONFIG_ARM_PSCI_CPUIDLE) += cpuidle-psci.o +obj-$(CONFIG_ARM_PSCI_CPUIDLE) += cpuidle_psci.o +cpuidle_psci-y := cpuidle-psci.o +cpuidle_psci-$(CONFIG_PM_GENERIC_DOMAINS_OF) += cpuidle-psci-domain.o ############################################################################### # MIPS drivers diff --git a/drivers/cpuidle/cpuidle-psci-domain.c b/drivers/cpuidle/cpuidle-psci-domain.c new file mode 100644 index 000000000000..87f881c21af1 --- /dev/null +++ b/drivers/cpuidle/cpuidle-psci-domain.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PM domains for CPUs via genpd - managed by cpuidle-psci. + * + * Copyright (C) 2019 Linaro Ltd. + * Author: Ulf Hansson <ulf.hansson@linaro.org> + * + */ + +#include <linux/cpu.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/pm_domain.h> +#include <linux/pm_runtime.h> + +#include "cpuidle-psci.h" + +struct device __init *psci_dt_attach_cpu(int cpu) +{ + struct device *dev; + + dev = dev_pm_domain_attach_by_name(get_cpu_device(cpu), "psci"); + if (IS_ERR_OR_NULL(dev)) + return dev; + + pm_runtime_irq_safe(dev); + if (cpu_online(cpu)) + pm_runtime_get_sync(dev); + + return dev; +} diff --git a/drivers/cpuidle/cpuidle-psci.h b/drivers/cpuidle/cpuidle-psci.h new file mode 100644 index 000000000000..8609482cf490 --- /dev/null +++ b/drivers/cpuidle/cpuidle-psci.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __CPUIDLE_PSCI_H +#define __CPUIDLE_PSCI_H + +#ifdef CONFIG_PM_GENERIC_DOMAINS_OF +struct device __init *psci_dt_attach_cpu(int cpu); +#else +static inline struct device __init *psci_dt_attach_cpu(int cpu) { return NULL; } +#endif + +#endif /* __CPUIDLE_PSCI_H */ |