SWING_SEL_LOWER_MASK
mask = SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
#define SWING_SEL_LOWER(x) REG_FIELD_PREP(SWING_SEL_LOWER_MASK, (x) & 0x7)
SWING_SEL_UPPER_MASK | SWING_SEL_LOWER_MASK | RCOMP_SCALAR_MASK,