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422 giacomo 1
/*
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 * Definitions for ADB (Apple Desktop Bus) support.
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 */
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#ifndef __ADB_H
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#define __ADB_H
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/* ADB commands */
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#define ADB_BUSRESET            0
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#define ADB_FLUSH(id)           (0x01 | ((id) << 4))
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#define ADB_WRITEREG(id, reg)   (0x08 | (reg) | ((id) << 4))
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#define ADB_READREG(id, reg)    (0x0C | (reg) | ((id) << 4))
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/* ADB default device IDs (upper 4 bits of ADB command byte) */
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#define ADB_DONGLE      1       /* "software execution control" devices */
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#define ADB_KEYBOARD    2
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#define ADB_MOUSE       3
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#define ADB_TABLET      4
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#define ADB_MODEM       5
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#define ADB_MISC        7       /* maybe a monitor */
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#define ADB_RET_OK      0
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#define ADB_RET_TIMEOUT 3
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/* The kind of ADB request. The controller may emulate some
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   or all of those CUDA/PMU packet kinds */
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#define ADB_PACKET      0
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#define CUDA_PACKET     1
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#define ERROR_PACKET    2
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#define TIMER_PACKET    3
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#define POWER_PACKET    4
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#define MACIIC_PACKET   5
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#define PMU_PACKET      6
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#define ADB_QUERY       7
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/* ADB queries */
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/* ADB_QUERY_GETDEVINFO
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 * Query ADB slot for device presence
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 * data[2] = id, rep[0] = orig addr, rep[1] = handler_id
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 */
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#define ADB_QUERY_GETDEVINFO    1
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#ifdef __KERNEL__
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struct adb_request {
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        unsigned char data[32];
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        int nbytes;
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        unsigned char reply[32];
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        int reply_len;
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        unsigned char reply_expected;
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        unsigned char sent;
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        unsigned char complete;
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        void (*done)(struct adb_request *);
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        void *arg;
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        struct adb_request *next;
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};
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struct adb_ids {
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        int nids;
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        unsigned char id[16];
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};
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/* Structure which encapsulates a low-level ADB driver */
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struct adb_driver {
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        char name[16];
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        int (*probe)(void);
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        int (*init)(void);
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        int (*send_request)(struct adb_request *req, int sync);
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        int (*autopoll)(int devs);
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        void (*poll)(void);
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        int (*reset_bus)(void);
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};
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/* Values for adb_request flags */
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#define ADBREQ_REPLY    1       /* expect reply */
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#define ADBREQ_SYNC     2       /* poll until done */
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#define ADBREQ_NOSEND   4       /* build the request, but don't send it */
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/* Messages sent thru the client_list notifier. You should NOT stop
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   the operation, at least not with this version */
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enum adb_message {
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    ADB_MSG_POWERDOWN,  /* Currently called before sleep only */
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    ADB_MSG_PRE_RESET,  /* Called before resetting the bus */
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    ADB_MSG_POST_RESET  /* Called after resetting the bus (re-do init & register) */
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};
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extern struct adb_driver *adb_controller;
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extern struct notifier_block *adb_client_list;
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int adb_request(struct adb_request *req, void (*done)(struct adb_request *),
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                int flags, int nbytes, ...);
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int adb_register(int default_id,int handler_id,struct adb_ids *ids,
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                 void (*handler)(unsigned char *, int, struct pt_regs *, int));
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int adb_unregister(int index);
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void adb_poll(void);
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void adb_input(unsigned char *, int, struct pt_regs *, int);
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int adb_reset_bus(void);
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int adb_try_handler_change(int address, int new_id);
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int adb_get_infos(int address, int *original_address, int *handler_id);
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#endif /* __KERNEL__ */
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#endif /* __ADB_H */