diff options
Diffstat (limited to 'include/linux/adb.h')
| -rw-r--r-- | include/linux/adb.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/include/linux/adb.h b/include/linux/adb.h new file mode 100644 index 00000000000..e9fdc63483c --- /dev/null +++ b/include/linux/adb.h @@ -0,0 +1,104 @@ +/* + * Definitions for ADB (Apple Desktop Bus) support. + */ +#ifndef __ADB_H +#define __ADB_H + +/* ADB commands */ +#define ADB_BUSRESET 0 +#define ADB_FLUSH(id) (0x01 | ((id) << 4)) +#define ADB_WRITEREG(id, reg) (0x08 | (reg) | ((id) << 4)) +#define ADB_READREG(id, reg) (0x0C | (reg) | ((id) << 4)) + +/* ADB default device IDs (upper 4 bits of ADB command 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 */ + +#define ADB_RET_OK 0 +#define ADB_RET_TIMEOUT 3 + +/* The kind of ADB request. The controller may emulate some + or all of those CUDA/PMU packet kinds */ +#define ADB_PACKET 0 +#define CUDA_PACKET 1 +#define ERROR_PACKET 2 +#define TIMER_PACKET 3 +#define POWER_PACKET 4 +#define MACIIC_PACKET 5 +#define PMU_PACKET 6 +#define ADB_QUERY 7 + +/* ADB queries */ + +/* ADB_QUERY_GETDEVINFO + * Query ADB slot for device presence + * data[2] = id, rep[0] = orig addr, rep[1] = handler_id + */ +#define ADB_QUERY_GETDEVINFO 1 + +#ifdef __KERNEL__ + +struct adb_request { + unsigned char data[32]; + int nbytes; + unsigned char reply[32]; + int reply_len; + unsigned char reply_expected; + unsigned char sent; + unsigned char complete; + void (*done)(struct adb_request *); + void *arg; + struct adb_request *next; +}; + +struct adb_ids { + int nids; + unsigned char id[16]; +}; + +/* Structure which encapsulates a low-level ADB driver */ + +struct adb_driver { + char name[16]; + int (*probe)(void); + int (*init)(void); + int (*send_request)(struct adb_request *req, int sync); + int (*autopoll)(int devs); + void (*poll)(void); + int (*reset_bus)(void); +}; + +/* Values for adb_request flags */ +#define ADBREQ_REPLY 1 /* expect reply */ +#define ADBREQ_SYNC 2 /* poll until done */ +#define ADBREQ_NOSEND 4 /* build the request, but don't send it */ + +/* Messages sent thru the client_list notifier. You should NOT stop + the operation, at least not with this version */ +enum adb_message { + ADB_MSG_POWERDOWN, /* Currently called before sleep only */ + ADB_MSG_PRE_RESET, /* Called before resetting the bus */ + ADB_MSG_POST_RESET /* Called after resetting the bus (re-do init & register) */ +}; +extern struct adb_driver *adb_controller; +extern struct notifier_block *adb_client_list; + +int adb_request(struct adb_request *req, void (*done)(struct adb_request *), + int flags, int nbytes, ...); +int adb_register(int default_id,int handler_id,struct adb_ids *ids, + void (*handler)(unsigned char *, int, struct pt_regs *, int)); +int adb_unregister(int index); +void adb_poll(void); +void adb_input(unsigned char *, int, struct pt_regs *, int); +int adb_reset_bus(void); + +int adb_try_handler_change(int address, int new_id); +int adb_get_infos(int address, int *original_address, int *handler_id); + +#endif /* __KERNEL__ */ + +#endif /* __ADB_H */ |