SKY1_PIN_SIZE
pin_reg = spctl->base + pin * SKY1_PIN_SIZE;
pin * SKY1_PIN_SIZE, reg_val);
pin_reg = spctl->base + pin * SKY1_PIN_SIZE;
pin * SKY1_PIN_SIZE, reg_val);
pin_reg = spctl->base + pin * SKY1_PIN_SIZE;
pin * SKY1_PIN_SIZE, reg_val);