drivers/acpi/arm64/cpuidle.c

Source file repositories/reference/linux-study-clean/drivers/acpi/arm64/cpuidle.c

File Facts

System
Linux kernel
Corpus path
drivers/acpi/arm64/cpuidle.c
Extension
.c
Size
1583 bytes
Lines
67
Domain
Driver Families
Bucket
drivers/acpi
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (!psci_power_state_is_valid(state)) {
			pr_warn("Invalid PSCI power state %#x\n", state);
			return -EINVAL;
		}
	}

	return 0;
}

int acpi_processor_ffh_lpi_probe(unsigned int cpu)
{
	return psci_acpi_cpu_init_idle(cpu);
}

__cpuidle int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi)
{
	u32 state = lpi->address;

	if (ARM64_LPI_IS_RETENTION_STATE(lpi->arch_flags))
		return CPU_PM_CPU_IDLE_ENTER_RETENTION_PARAM_RCU(psci_cpu_suspend_enter,
						lpi->index, state);
	else
		return CPU_PM_CPU_IDLE_ENTER_PARAM_RCU(psci_cpu_suspend_enter,
					     lpi->index, state);
}

Annotation

Implementation Notes