/* Copyright holders: Sarah Walker
   see COPYING for more details
*/

enum
{
        EEPROM_IDLE,
        EEPROM_WAIT,
        EEPROM_OPCODE,
        EEPROM_INPUT,
        EEPROM_OUTPUT
};

enum
{
        EEPROM_OP_EW    = 4,
        EEPROM_OP_WRITE = 5,
        EEPROM_OP_READ  = 6,
        EEPROM_OP_ERASE = 7,
        
        EEPROM_OP_WRALMAIN = -1
};

enum
{
        EEPROM_OP_EWDS = 0,
        EEPROM_OP_WRAL = 1,
        EEPROM_OP_ERAL = 2,
        EEPROM_OP_EWEN = 3
};


typedef struct ati_eeprom_t
{
        uint16_t data[256];

        int oldclk, oldena;
        int opcode, state, count, out;
        int wp;
        uint32_t dat;
        int type;
	int address;

        wchar_t fn[256];
} ati_eeprom_t;

void ati_eeprom_load(ati_eeprom_t *eeprom, wchar_t *fn, int type);
void ati_eeprom_write(ati_eeprom_t *eeprom, int ena, int clk, int dat);
int ati_eeprom_read(ati_eeprom_t *eeprom);