SW_TWSI_SIZE_SHIFT
cmd |= (u64)(msgs[0].len - 1) << SW_TWSI_SIZE_SHIFT;
cmd |= (u64)(msgs[0].len - 1) << SW_TWSI_SIZE_SHIFT;
cmd |= (u64)(msgs[1].len - 1) << SW_TWSI_SIZE_SHIFT;
cmd |= (u64)(msgs[1].len - 1) << SW_TWSI_SIZE_SHIFT;