Add IS_OPTIONAL_CPC_REG macro to judge if a cpc_reg is an optional one. Signed-off-by: Lifeng Zheng <zhenglifeng1@xxxxxxxxxx> --- drivers/acpi/cppc_acpi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index f193e713825a..6454b469338f 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -129,6 +129,12 @@ static DEFINE_PER_CPU(struct cpc_desc *, cpc_desc_ptr); #define CPC_SUPPORTED(cpc) ((cpc)->type == ACPI_TYPE_INTEGER ? \ !!(cpc)->cpc_entry.int_value : \ !IS_NULL_REG(&(cpc)->cpc_entry.reg)) + +/* These indicate optional of the per-cpu cpc_regs[]. */ +#define REG_OPTIONAL (0b111111100011111010000) + +#define IS_OPTIONAL_CPC_REG(reg_idx) (REG_OPTIONAL & (1U << (reg_idx))) + /* * Arbitrary Retries in case the remote processor is slow to respond * to PCC commands. Keeping it high enough to cover emulators where -- 2.33.0
