bpcm_wr
ret = bpcm_wr(base, addr, ARM_PWR_CONTROL(cpu), val);
ret = bpcm_wr(base, addr, ARM_PWR_CONTROL(cpu), val);
ret = bpcm_wr(base, addr, ARM_PWR_CONTROL(cpu), val);
ret = bpcm_wr(base, addr, ARM_CONTROL, ctrl);
ret = bpcm_wr(master, addr, off, *val);
err = bpcm_wr(base, device, offset, val);