RISC-V: ACPI: Add LPI support #465
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To support ACPI Low Power Idle (LPI), few functions are required which are currently static functions in the DT based cpuidle driver. Hence, move them under arch/riscv so that ACPI driver also can use them. Since they are no longer static functions, append "riscv_" prefix to the function name. Signed-off-by: Sunil V L <sunilvl@ventanamicro.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Enable Low Power Idle (LPI) based cpuidle driver for RISC-V platforms. It depends on SBI HSM calls for idle state transitions. Signed-off-by: Sunil V L <sunilvl@ventanamicro.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
The ACPI processor driver is not currently enabled for RISC-V. This is required to enable CPU related functionalities like LPI and CPPC. Hence, enable ACPI_PROCESSOR for RISC-V. Signed-off-by: Sunil V L <sunilvl@ventanamicro.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
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Pull request for series with
subject: RISC-V: ACPI: Add LPI support
version: 1
url: https://patchwork.kernel.org/project/linux-riscv/list/?series=816074