linux-stable/drivers/cpuidle/cpuidle-psci.h

/* 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 */
cpuidle: psci: Add a helper to attach a CPU to its PM domain Introduce a PSCI DT helper function, psci_dt_attach_cpu(), which takes a CPU number as an in-parameter and tries to attach the CPU's struct device to its corresponding PM domain. Let's makes use of dev_pm_domain_attach_by_name(), as it allows us to specify "psci" as the "name" of the PM domain to attach to. Additionally, let's also prepare the attached device to be power managed via runtime PM. Note that, the implementation of the new helper function is in a new separate c-file, which may seems a bit too much at this point. However, subsequent changes that implements the remaining part of the PM domain support for cpuidle-psci, helps to justify this split. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> 2019-10-28 15:32:23 +00:00			`/* 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 */`