u8                      *mmio = par->mmio_start_virtual;
u8                      __iomem *mmio = par->mmio_start_virtual;
static void i810ddc_setscl(void *data, int state){        struct i810fb_i2c_chan    *chan = (struct i810fb_i2c_chan *)data;        struct i810fb_par       *par = chan->par;	u8                      *mmio = par->mmio_start_virtual;	i810_writel(mmio, GPIOA, (state ? SCL_VAL_OUT : 0) | SCL_DIR |		    SCL_DIR_MASK | SCL_VAL_MASK);	i810_readl(mmio, GPIOA);	/* flush posted write */}