savagefb: rework i2c bit access

Use already defined VGAwCR/VGArCR functions to access the i2c bus.
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/savage/savagefb-i2c.c

@@ -41,10 +41,6 @@
 #define SAVAGE4_I2C_SCL_IN	0x00000008
 #define SAVAGE4_I2C_SDA_IN	0x00000010
 
-#define SET_CR_IX(base, val)	writeb((val), base + 0x8000 + VGA_CR_IX)
-#define SET_CR_DATA(base, val)	writeb((val), base + 0x8000 + VGA_CR_DATA)
-#define GET_CR_DATA(base)	readb(base + 0x8000 + VGA_CR_DATA)
-
 static void savage4_gpio_setscl(void *data, int val)
 {
 	struct savagefb_i2c_chan *chan = data;
@@ -92,15 +88,15 @@ static void prosavage_gpio_setscl(void* data, int val)
 	struct savagefb_i2c_chan *chan = data;
 	u32			  r;
 
-	SET_CR_IX(chan->ioaddr, chan->reg);
-	r = GET_CR_DATA(chan->ioaddr);
+	r = VGArCR(chan->reg, chan->par);
 	r |= PROSAVAGE_I2C_ENAB;
 	if (val) {
 		r |= PROSAVAGE_I2C_SCL_OUT;
 	} else {
 		r &= ~PROSAVAGE_I2C_SCL_OUT;
 	}
-	SET_CR_DATA(chan->ioaddr, r);
+
+	VGAwCR(chan->reg, r, chan->par);
 }
 
 static void prosavage_gpio_setsda(void* data, int val)
@@ -108,31 +104,29 @@ static void prosavage_gpio_setsda(void* data, int val)
 	struct savagefb_i2c_chan *chan = data;
 	unsigned int r;
 
-	SET_CR_IX(chan->ioaddr, chan->reg);
-	r = GET_CR_DATA(chan->ioaddr);
+	r = VGArCR(chan->reg, chan->par);
 	r |= PROSAVAGE_I2C_ENAB;
 	if (val) {
 		r |= PROSAVAGE_I2C_SDA_OUT;
 	} else {
 		r &= ~PROSAVAGE_I2C_SDA_OUT;
 	}
-	SET_CR_DATA(chan->ioaddr, r);
+
+	VGAwCR(chan->reg, r, chan->par);
 }
 
 static int prosavage_gpio_getscl(void* data)
 {
 	struct savagefb_i2c_chan *chan = data;
 
-	SET_CR_IX(chan->ioaddr, chan->reg);
-	return (0 != (GET_CR_DATA(chan->ioaddr) & PROSAVAGE_I2C_SCL_IN));
+	return (VGArCR(chan->reg, chan->par) & PROSAVAGE_I2C_SCL_IN) ? 1 : 0;
 }
 
 static int prosavage_gpio_getsda(void* data)
 {
 	struct savagefb_i2c_chan *chan = data;
 
-	SET_CR_IX(chan->ioaddr, chan->reg);
-	return (0 != (GET_CR_DATA(chan->ioaddr) & PROSAVAGE_I2C_SDA_IN));
+	return (VGArCR(chan->reg, chan->par) & PROSAVAGE_I2C_SDA_IN) ? 1 : 0;
 }
 
 static int savage_setup_i2c_bus(struct savagefb_i2c_chan *chan,