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/*

 * Definitions for talking to ADB and CUDA.  The CUDA is a microcontroller

 * which controls the ADB, system power, RTC, and various other things on

 * later Macintoshes

 *

 * Copyright (C) 1996 Paul Mackerras.

 */

/* First byte sent to or received from CUDA */

#define ADB_PACKET      0

#define CUDA_PACKET     1

#define ERROR_PACKET    2

#define TIMER_PACKET    3

#define POWER_PACKET    4

#define MACIIC_PACKET   5

/* ADB commands (2nd byte) */

#define ADB_BUSRESET            0

#define ADB_FLUSH(id)           (1 + ((id) << 4))

#define ADB_WRITEREG(id, reg)   (8 + (reg) + ((id) << 4))

#define ADB_READREG(id, reg)    (0xc + (reg) + ((id) << 4))

/* ADB default device IDs (upper 4 bits of 2nd byte) */

#define ADB_DONGLE      1       /* "software execution control" devices */

#define ADB_KEYBOARD    2

#define ADB_MOUSE       3

#define ADB_TABLET      4

#define ADB_MODEM       5

#define ADB_MISC        7       /* maybe a monitor */

/* CUDA commands (2nd byte) */

#define CUDA_WARM_START         0

#define CUDA_AUTOPOLL           1

#define CUDA_GET_6805_ADDR      2

#define CUDA_GET_TIME           3

#define CUDA_GET_PRAM           7

#define CUDA_SET_6805_ADDR      8

#define CUDA_SET_TIME           9

#define CUDA_POWERDOWN          0xa

#define CUDA_POWERUP_TIME       0xb

#define CUDA_SET_PRAM           0xc

#define CUDA_MS_RESET           0xd

#define CUDA_SEND_DFAC          0xe

#define CUDA_RESET_SYSTEM       0x11

#define CUDA_SET_IPL            0x12

#define CUDA_SET_AUTO_RATE      0x14

#define CUDA_GET_AUTO_RATE      0x16

#define CUDA_SET_DEVICE_LIST    0x19

#define CUDA_GET_DEVICE_LIST    0x1a

#define CUDA_GET_SET_IIC        0x22

#ifdef __KERNEL__

struct adb_request {

    unsigned char data[16];

    int nbytes;

    unsigned char reply[16];

    int reply_len;

    unsigned char reply_expected;

    unsigned char sent;

    unsigned char got_reply;

    void (*done)(struct adb_request *);

    void *arg;

    struct adb_request *next;

};

void via_adb_init(void);

int adb_request(struct adb_request *req,

                 void (*done)(struct adb_request *), int nbytes, ...);

int adb_send_request(struct adb_request *req);

void adb_poll(void);

int adb_register(int default_id,

                 void (*handler)(unsigned char *, int, struct pt_regs *));

#endif  /* __KERNEL */