#define FW_DISPC_BL_SHIFT 8
#define FW_DISPC_BL_MASK 0x7
+#define GPIOA 0x5010
+#define GPIOB 0x5014
+#define GPIOC 0x5018 // this may be external DDC on i830
+#define GPIOD 0x501C // this is DVO DDC
+#define GPIOE 0x5020 // this is DVO i2C
+#define GPIOF 0x5024
/* PLL registers */
#define VGA0_DIVISOR 0x06000