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-rw-r--r--include/video/tdfx.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/include/video/tdfx.h b/include/video/tdfx.h
index 7431d96..befbaf0 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__ */
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