| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Definitions for ADB (Apple Desktop Bus) support. |
| 3 | */ |
| 4 | #ifndef __ADB_H |
| 5 | #define __ADB_H |
| 6 | |
| 7 | /* ADB commands */ |
| 8 | #define ADB_BUSRESET 0 |
| 9 | #define ADB_FLUSH(id) (0x01 | ((id) << 4)) |
| 10 | #define ADB_WRITEREG(id, reg) (0x08 | (reg) | ((id) << 4)) |
| 11 | #define ADB_READREG(id, reg) (0x0C | (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 | /* The kind of ADB request. The controller may emulate some |
| 25 | or all of those CUDA/PMU packet kinds */ |
| 26 | #define ADB_PACKET 0 |
| 27 | #define CUDA_PACKET 1 |
| 28 | #define ERROR_PACKET 2 |
| 29 | #define TIMER_PACKET 3 |
| 30 | #define POWER_PACKET 4 |
| 31 | #define MACIIC_PACKET 5 |
| 32 | #define PMU_PACKET 6 |
| 33 | #define ADB_QUERY 7 |
| 34 | |
| 35 | /* ADB queries */ |
| 36 | |
| 37 | /* ADB_QUERY_GETDEVINFO |
| 38 | * Query ADB slot for device presence |
| 39 | * data[2] = id, rep[0] = orig addr, rep[1] = handler_id |
| 40 | */ |
| 41 | #define ADB_QUERY_GETDEVINFO 1 |
| 42 | |
| 43 | #ifdef __KERNEL__ |
| 44 | |
| 45 | struct adb_request { |
| 46 | unsigned char data[32]; |
| 47 | int nbytes; |
| 48 | unsigned char reply[32]; |
| 49 | int reply_len; |
| 50 | unsigned char reply_expected; |
| 51 | unsigned char sent; |
| 52 | unsigned char complete; |
| 53 | void (*done)(struct adb_request *); |
| 54 | void *arg; |
| 55 | struct adb_request *next; |
| 56 | }; |
| 57 | |
| 58 | struct adb_ids { |
| 59 | int nids; |
| 60 | unsigned char id[16]; |
| 61 | }; |
| 62 | |
| 63 | /* Structure which encapsulates a low-level ADB driver */ |
| 64 | |
| 65 | struct adb_driver { |
| 66 | char name[16]; |
| 67 | int (*probe)(void); |
| 68 | int (*init)(void); |
| 69 | int (*send_request)(struct adb_request *req, int sync); |
| 70 | int (*autopoll)(int devs); |
| 71 | void (*poll)(void); |
| 72 | int (*reset_bus)(void); |
| 73 | }; |
| 74 | |
| 75 | /* Values for adb_request flags */ |
| 76 | #define ADBREQ_REPLY 1 /* expect reply */ |
| 77 | #define ADBREQ_SYNC 2 /* poll until done */ |
| 78 | #define ADBREQ_NOSEND 4 /* build the request, but don't send it */ |
| 79 | |
| 80 | /* Messages sent thru the client_list notifier. You should NOT stop |
| 81 | the operation, at least not with this version */ |
| 82 | enum adb_message { |
| 83 | ADB_MSG_POWERDOWN, /* Currently called before sleep only */ |
| 84 | ADB_MSG_PRE_RESET, /* Called before resetting the bus */ |
| 85 | ADB_MSG_POST_RESET /* Called after resetting the bus (re-do init & register) */ |
| 86 | }; |
| 87 | extern struct adb_driver *adb_controller; |
| 88 | extern struct notifier_block *adb_client_list; |
| 89 | |
| 90 | int adb_request(struct adb_request *req, void (*done)(struct adb_request *), |
| 91 | int flags, int nbytes, ...); |
| 92 | int adb_register(int default_id,int handler_id,struct adb_ids *ids, |
| 93 | void (*handler)(unsigned char *, int, struct pt_regs *, int)); |
| 94 | int adb_unregister(int index); |
| 95 | void adb_poll(void); |
| 96 | void adb_input(unsigned char *, int, struct pt_regs *, int); |
| 97 | int adb_reset_bus(void); |
| 98 | |
| 99 | int adb_try_handler_change(int address, int new_id); |
| 100 | int adb_get_infos(int address, int *original_address, int *handler_id); |
| 101 | |
| 102 | #endif /* __KERNEL__ */ |
| 103 | |
| 104 | #endif /* __ADB_H */ |