PDAUDIOCF_AK_SBP
while (pdacf_reg_read(chip, PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) {
while (pdacf_reg_read(chip, PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) {
while (inw(chip->port + PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) {