
#include "xf86RamDac.h"

RamDacHelperRecPtr BTramdacProbe(ScrnInfoPtr pScrn, RamDacSupportedInfoRecPtr ramdacs);
void BTramdacSave(ScrnInfoPtr pScrn, RamDacRecPtr RamDacRec, RamDacRegRecPtr RamDacRegRec);
void BTramdacRestore(ScrnInfoPtr pScrn, RamDacRecPtr RamDacRec, RamDacRegRecPtr RamDacRegRec);
void BTramdacSetBpp(ScrnInfoPtr pScrn, RamDacRegRecPtr RamDacRegRec);

#define ATT20C504_RAMDAC 	(VENDOR_BT << 16) | 0x00
#define ATT20C505_RAMDAC 	(VENDOR_BT << 16) | 0x01
#define BT485_RAMDAC		(VENDOR_BT << 16) | 0x02

/*
 * BT registers
 */

#define BT_WRITE_ADDR		0x00
#define BT_RAMDAC_DATA		0x01	
#define BT_PIXEL_MASK		0x02
#define BT_READ_ADDR		0x03
#define BT_CURS_WR_ADDR		0x04
#define BT_CURS_DATA		0x05
#define BT_COMMAND_REG_0	0x06
#define BT_CURS_RD_ADDR		0x07
#define BT_COMMAND_REG_1	0x08
#define BT_COMMAND_REG_2	0x09
#define BT_STATUS_REG		0x0A
#define BT_CURS_RAM_DATA	0x0B
#define BT_CURS_X_LOW		0x0C
#define BT_CURS_X_HIGH		0x0D
#define BT_CURS_Y_LOW		0x0E
#define BT_CURS_Y_HIGH		0x0F
