IPROC_GPIO_CCA_INT_LEVEL
int_pol = readl_relaxed(chip->base + IPROC_GPIO_CCA_INT_LEVEL);
writel_relaxed(int_pol, chip->base + IPROC_GPIO_CCA_INT_LEVEL);
int_pol = readl_relaxed(chip->base + IPROC_GPIO_CCA_INT_LEVEL);
writel_relaxed(int_pol, chip->base + IPROC_GPIO_CCA_INT_LEVEL);
level ^= readl_relaxed(chip->base + IPROC_GPIO_CCA_INT_LEVEL);