73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/**
|
|
* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
|
|
*
|
|
* This source file is released under GPL v2 license (no other versions).
|
|
* See the COPYING file included in the main directory of this source
|
|
* distribution for the license terms and conditions.
|
|
*
|
|
* @File ctresource.h
|
|
*
|
|
* @Brief
|
|
* This file contains the definition of generic hardware resources for
|
|
* resource management.
|
|
*
|
|
* @Author Liu Chun
|
|
* @Date May 13 2008
|
|
*
|
|
*/
|
|
|
|
#ifndef CTRESOURCE_H
|
|
#define CTRESOURCE_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
enum RSCTYP {
|
|
SRC,
|
|
SRCIMP,
|
|
AMIXER,
|
|
SUM,
|
|
DAIO,
|
|
NUM_RSCTYP /* This must be the last one and less than 16 */
|
|
};
|
|
|
|
struct rsc_ops;
|
|
|
|
struct rsc {
|
|
u32 idx:12; /* The index of a resource */
|
|
u32 type:4; /* The type (RSCTYP) of a resource */
|
|
u32 conj:12; /* Current conjugate index */
|
|
u32 msr:4; /* The Master Sample Rate a resource working on */
|
|
void *ctrl_blk; /* Chip specific control info block for a resource */
|
|
void *hw; /* Chip specific object for hardware access means */
|
|
struct rsc_ops *ops; /* Generic resource operations */
|
|
};
|
|
|
|
struct rsc_ops {
|
|
int (*master)(struct rsc *rsc); /* Move to master resource */
|
|
int (*next_conj)(struct rsc *rsc); /* Move to next conjugate resource */
|
|
int (*index)(const struct rsc *rsc); /* Return the index of resource */
|
|
/* Return the output slot number */
|
|
int (*output_slot)(const struct rsc *rsc);
|
|
};
|
|
|
|
int rsc_init(struct rsc *rsc, u32 idx, enum RSCTYP type, u32 msr, void *hw);
|
|
int rsc_uninit(struct rsc *rsc);
|
|
|
|
struct rsc_mgr {
|
|
enum RSCTYP type; /* The type (RSCTYP) of resource to manage */
|
|
unsigned int amount; /* The total amount of a kind of resource */
|
|
unsigned int avail; /* The amount of currently available resources */
|
|
unsigned char *rscs; /* The bit-map for resource allocation */
|
|
void *ctrl_blk; /* Chip specific control info block */
|
|
void *hw; /* Chip specific object for hardware access */
|
|
};
|
|
|
|
/* Resource management is based on bit-map mechanism */
|
|
int rsc_mgr_init(struct rsc_mgr *mgr, enum RSCTYP type,
|
|
unsigned int amount, void *hw);
|
|
int rsc_mgr_uninit(struct rsc_mgr *mgr);
|
|
int mgr_get_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int *ridx);
|
|
int mgr_put_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int idx);
|
|
|
|
#endif /* CTRESOURCE_H */
|