opal_prd_scom 40 arch/powerpc/include/uapi/asm/opal-prd.h #define OPAL_PRD_SCOM_READ _IOR('o', 0x02, struct opal_prd_scom) opal_prd_scom 41 arch/powerpc/include/uapi/asm/opal-prd.h #define OPAL_PRD_SCOM_WRITE _IOW('o', 0x03, struct opal_prd_scom) opal_prd_scom 269 arch/powerpc/platforms/powernv/opal-prd.c struct opal_prd_scom scom;