include/asm-ppc/adb.h

   1 /*
   2  * Definitions for ADB (Apple Desktop Bus) support.
   3  */
   4 #ifndef __PPC_ADB_H
   5 #define __PPC_ADB_H
   6
   7 /* ADB commands */
   8 #define ADB_BUSRESET            0
   9 #define ADB_FLUSH(id)           (1 + ((id) << 4))
  10 #define ADB_WRITEREG(id, reg)   (8 + (reg) + ((id) << 4))
  11 #define ADB_READREG(id, reg)    (0xc + (reg) + ((id) << 4))
  12
  13 /* ADB default device IDs (upper 4 bits of ADB command byte) */
  14 #define ADB_DONGLE      1       /* "software execution control" devices */
  15 #define ADB_KEYBOARD    2
  16 #define ADB_MOUSE       3
  17 #define ADB_TABLET      4
  18 #define ADB_MODEM       5
  19 #define ADB_MISC        7       /* maybe a monitor */
  20
  21 #define ADB_RET_OK      0
  22 #define ADB_RET_TIMEOUT 3
  23
  24 #ifdef __KERNEL__
  25
  26 struct adb_request {
  27     unsigned char data[32];
  28     int nbytes;
  29     unsigned char reply[32];
  30     int reply_len;
  31     unsigned char reply_expected;
  32     unsigned char sent;
  33     unsigned char complete;
  34     void (*done)(struct adb_request *);
  35     void *arg;
  36     struct adb_request *next;
  37 };
  38
  39 struct adb_ids {
  40     int nids;
  41     unsigned char id[16];
  42 };
  43
  44 extern enum adb_hw {
  45         ADB_NONE, ADB_VIACUDA, ADB_VIAPMU, ADB_MACIO
  46 } adb_hardware;
  47
  48 extern int (*adb_send_request)(struct adb_request *req, int sync);
  49 extern int (*adb_autopoll)(int devs);
  50 extern int (*adb_reset_bus)(void);
  51
  52 /* Values for adb_request flags */
  53 #define ADBREQ_REPLY    1       /* expect reply */
  54 #define ADBREQ_SYNC     2       /* poll until done */
  55
  56 void adb_init(void);
  57 int adb_request(struct adb_request *req, void (*done)(struct adb_request *),
  58                 int flags, int nbytes, ...);
  59 int adb_register(int default_id,int handler_id,struct adb_ids *ids,
  60                  void (*handler)(unsigned char *, int, struct pt_regs *, int));
  61 void adb_input(unsigned char *, int, struct pt_regs *, int);
  62
  63 #endif /* __KERNEL__ */
  64
  65 #endif /* __PPC_ADB_H */