ACPI: utils: Add acpi_evaluate_reg() helper (132565d8) · Commits · 戴 / test

drivers/acpi/utils.c

+25 −0

Original line number	Diff line number	Diff line
		@@ -605,6 +605,31 @@ acpi_status acpi_evaluate_lck(acpi_handle handle, int lock)
		return status;
		}

		/**
		* acpi_evaluate_reg: Evaluate _REG method to register OpRegion presence
		* @handle: ACPI device handle
		* @space_id: ACPI address space id to register OpRegion presence for
		* @function: Parameter to pass to _REG one of ACPI_REG_CONNECT or
		* ACPI_REG_DISCONNECT
		*
		* Evaluate device's _REG method to register OpRegion presence.
		*/
		acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function)
		{
		struct acpi_object_list arg_list;
		union acpi_object params[2];

		params[0].type = ACPI_TYPE_INTEGER;
		params[0].integer.value = space_id;
		params[1].type = ACPI_TYPE_INTEGER;
		params[1].integer.value = function;
		arg_list.count = 2;
		arg_list.pointer = params;

		return acpi_evaluate_object(handle, "_REG", &arg_list, NULL);
		}
		EXPORT_SYMBOL(acpi_evaluate_reg);

		/**
		* acpi_evaluate_dsm - evaluate device's _DSM method
		* @handle: ACPI device handle

+1 −0

Original line number	Diff line number	Diff line
		@@ -44,6 +44,7 @@ acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
		u64 arg);
		acpi_status acpi_evaluate_ej0(acpi_handle handle);
		acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
		acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function);
		bool acpi_ata_match(acpi_handle handle);
		bool acpi_bay_match(acpi_handle handle);
		bool acpi_dock_match(acpi_handle handle);