snd_hdac_reg_readb
snd_hdac_reg_readb(chip, (chip)->remap_addr + (reg))
snd_hdac_reg_readb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg)
read_poll_timeout_atomic(snd_hdac_reg_readb, val, cond, delay_us, timeout_us, \
snd_hdac_reg_readb(&(adev)->base.core, (adev)->dsp_ba + (reg))