这是一个SIGMA方案的PMP播放器的UCLINUX程序,可播放DVD,VCD,CD MP3...有很好的参考价值.

				/*				 * 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) 				#define ADB_WRITEREG(id, reg)	(0x08 | (reg) | ((id) 				#define ADB_READREG(id, reg)	(0x0C | (reg) | ((id) 								/* 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								#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 */