to_ireg
unsigned int mask, reg = to_ireg(gpio, IRQ_MASK, &mask);
unsigned int mask, reg = to_ireg(gpio, IRQ_STATUS, &mask);
ret += regmap_read(wg->regmap, to_ireg(gpio, IRQ_MASK, &mask), &irq_mask);
ret += regmap_read(wg->regmap, to_ireg(gpio, IRQ_STATUS, &mask), &irq_status);