drivers/rtc/rtc-ds1216.c

31 	void __iomem *ioaddr;
43 static void ds1216_read(u8 __iomem *ioaddr, u8 *buf)
51 			c |= (readb(ioaddr) & 0x1) << j;
56 static void ds1216_write(u8 __iomem *ioaddr, const u8 *buf)
64 			writeb(c, ioaddr);
70 static void ds1216_switch_ds_to_clock(u8 __iomem *ioaddr)
73 	readb(ioaddr);
75 	ds1216_write(ioaddr, magic);
83 	ds1216_switch_ds_to_clock(priv->ioaddr);
84 	ds1216_read(priv->ioaddr, (u8 *)&regs);
110 	ds1216_switch_ds_to_clock(priv->ioaddr);
111 	ds1216_read(priv->ioaddr, (u8 *)&regs);
128 	ds1216_switch_ds_to_clock(priv->ioaddr);
129 	ds1216_write(priv->ioaddr, (u8 *)&regs);
149 	priv->ioaddr = devm_platform_ioremap_resource(pdev, 0);
150 	if (IS_ERR(priv->ioaddr))
151 		return PTR_ERR(priv->ioaddr);
159 	ds1216_read(priv->ioaddr, dummy);