NFC_REG_ST
u32 st = readl(nfc->regs + NFC_REG_ST);
writel(st & NFC_INT_MASK, nfc->regs + NFC_REG_ST);
ret = readl_poll_timeout(nfc->regs + NFC_REG_ST, status,
writel(events & NFC_INT_MASK, nfc->regs + NFC_REG_ST);
ret = readl_poll_timeout(nfc->regs + NFC_REG_ST, status,