#ifndef PS2_H
#define PS2_H

#include "libsys.h"

// --------------------------------------------------
// Types
// --------------------------------------------------
enum
{
	ps2_type_unknown = 0,
	ps2_type_keyb,
	ps2_type_mouse
};

typedef struct _sps2_if_t
{
	uint32_t type;
	volatile uint32_t *pCTRL;
	volatile uint32_t *pDATA;
} ps2_if_t;

// --------------------------------------------------
// Constants
// --------------------------------------------------
#define	PS2_MODULE_PREFIX	0x1000000
#define	PS2_SUCCESS			LSYS_SUCCESS
#define	PS2_ERROR			(LSYS_ERR_BASE | PS2_MODULE_PREFIX)
#define	PS2_ERR_TIMEOUT		(PS2_ERROR | 0x0000001)
#define	PS2_ERR_PS2_PREFIX	(PS2_ERROR | 0x0010000)

// --------------------------------------------------
// Functions
// --------------------------------------------------
uint32_t PS2_get_num_if(void);
uint32_t PS2_init(ps2_if_t *pIF);
void PS2_byte_write(ps2_if_t *pIF, uint8_t byte);
uint32_t PS2_byte_read(ps2_if_t *pIF, uint32_t timeout_ms);

int PS2_readchar(void const *pInst);
void PS2_open(void const *pInst);
void PS2_close(void const *pInst);

uint32_t PS2_cmd(ps2_if_t *pIF, uint8_t cmd, uint32_t ack_timeout_ms);
void PS2_flush(ps2_if_t *pIF);

#endif // PS2_H