__c2 443 drivers/platform/x86/thinkpad_acpi.c #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) __c2 444 drivers/platform/x86/thinkpad_acpi.c #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3))