1 files changed, 26 insertions, 0 deletions

diff --git a/include/video/tdfx.h b/include/video/tdfx.h
index 7431d9681e57..befbaf0a92d8 100644
--- a/include/video/tdfx.h
+++ b/include/video/tdfx.h
@@ -1,6 +1,9 @@
 #ifndef _TDFX_H
 #define _TDFX_H
 
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+
 /* membase0 register offsets */
 #define STATUS          0x00
 #define PCIINIT0        0x04
@@ -123,6 +126,18 @@
 #define VIDCFG_PIXFMT_SHIFT             18
 #define DACMODE_2X                      BIT(0)
 
+/* I2C bit locations in the VIDSERPARPORT register */
+#define DDC_ENAB        0x00040000
+#define DDC_SCL_OUT     0x00080000
+#define DDC_SDA_OUT     0x00100000
+#define DDC_SCL_IN      0x00200000
+#define DDC_SDA_IN      0x00400000
+#define I2C_ENAB        0x00800000
+#define I2C_SCL_OUT     0x01000000
+#define I2C_SDA_OUT     0x02000000
+#define I2C_SCL_IN      0x04000000
+#define I2C_SDA_IN      0x08000000
+
 /* VGA rubbish, need to change this for multihead support */
 #define MISC_W          0x3c2
 #define MISC_R          0x3cc
@@ -168,12 +183,23 @@ struct banshee_reg {
         unsigned long miscinit0;
 };
 
+struct tdfx_par;
+
+struct tdfxfb_i2c_chan {
+        struct tdfx_par *par;
+        struct i2c_adapter adapter;
+        struct i2c_algo_bit_data algo;
+};
+
 struct tdfx_par {
         u32 max_pixclock;
         u32 palette[16];
         void __iomem *regbase_virt;
         unsigned long iobase;
         int mtrr_handle;
+#ifdef CONFIG_FB_3DFX_I2C
+        struct tdfxfb_i2c_chan chan[2];
+#endif
 };
 
 #endif  /* __KERNEL__ */