drivers/acpi/riscv/cpuidle.c

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

File Facts

System
Linux kernel
Corpus path
drivers/acpi/riscv/cpuidle.c
Extension
.c
Size
1880 bytes
Lines
82
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 (!riscv_sbi_suspend_state_is_valid(state)) {
			pr_warn("Invalid SBI power state %#x\n", state);
			return -EINVAL;
		}
	}

	return 0;
}

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

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

	if (state & SBI_HSM_SUSP_NON_RET_BIT)
		return CPU_PM_CPU_IDLE_ENTER_PARAM(riscv_sbi_hart_suspend,
						   lpi->index,
						   state);
	else
		return CPU_PM_CPU_IDLE_ENTER_RETENTION_PARAM(riscv_sbi_hart_suspend,
							     lpi->index,
							     state);
}

Annotation

Implementation Notes