2
* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
4
* This source file is released under GPL v2 license (no other versions).
5
* See the COPYING file included in the main directory of this source
6
* distribution for the license terms and conditions.
11
* This file contains the definition of generic hardware resources for
12
* resource management.
22
#include <linux/types.h>
30
NUM_RSCTYP /* This must be the last one and less than 16 */
36
u32 idx:12; /* The index of a resource */
37
u32 type:4; /* The type (RSCTYP) of a resource */
38
u32 conj:12; /* Current conjugate index */
39
u32 msr:4; /* The Master Sample Rate a resource working on */
40
void *ctrl_blk; /* Chip specific control info block for a resource */
41
struct hw *hw; /* Chip specific object for hardware access means */
42
const struct rsc_ops *ops; /* Generic resource operations */
46
int (*master)(struct rsc *rsc); /* Move to master resource */
47
int (*next_conj)(struct rsc *rsc); /* Move to next conjugate resource */
48
int (*index)(const struct rsc *rsc); /* Return the index of resource */
49
/* Return the output slot number */
50
int (*output_slot)(const struct rsc *rsc);
54
rsc_init(struct rsc *rsc, u32 idx, enum RSCTYP type, u32 msr, struct hw *hw);
55
int rsc_uninit(struct rsc *rsc);
58
enum RSCTYP type; /* The type (RSCTYP) of resource to manage */
59
unsigned int amount; /* The total amount of a kind of resource */
60
unsigned int avail; /* The amount of currently available resources */
61
unsigned char *rscs; /* The bit-map for resource allocation */
62
void *ctrl_blk; /* Chip specific control info block */
63
struct hw *hw; /* Chip specific object for hardware access */
66
/* Resource management is based on bit-map mechanism */
67
int rsc_mgr_init(struct rsc_mgr *mgr, enum RSCTYP type,
68
unsigned int amount, struct hw *hw);
69
int rsc_mgr_uninit(struct rsc_mgr *mgr);
70
int mgr_get_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int *ridx);
71
int mgr_put_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int idx);
73
#endif /* CTRESOURCE_H */