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69 lines
2.1 KiB
69 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved. |
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* |
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* @File ctresource.h |
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* |
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* @Brief |
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* This file contains the definition of generic hardware resources for |
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* resource management. |
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* |
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* @Author Liu Chun |
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* @Date May 13 2008 |
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*/ |
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#ifndef CTRESOURCE_H |
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#define CTRESOURCE_H |
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#include <linux/types.h> |
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enum RSCTYP { |
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SRC, |
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SRCIMP, |
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AMIXER, |
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SUM, |
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DAIO, |
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NUM_RSCTYP /* This must be the last one and less than 16 */ |
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}; |
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struct rsc_ops; |
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struct rsc { |
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u32 idx:12; /* The index of a resource */ |
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u32 type:4; /* The type (RSCTYP) of a resource */ |
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u32 conj:12; /* Current conjugate index */ |
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u32 msr:4; /* The Master Sample Rate a resource working on */ |
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void *ctrl_blk; /* Chip specific control info block for a resource */ |
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struct hw *hw; /* Chip specific object for hardware access means */ |
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const struct rsc_ops *ops; /* Generic resource operations */ |
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}; |
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struct rsc_ops { |
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int (*master)(struct rsc *rsc); /* Move to master resource */ |
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int (*next_conj)(struct rsc *rsc); /* Move to next conjugate resource */ |
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int (*index)(const struct rsc *rsc); /* Return the index of resource */ |
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/* Return the output slot number */ |
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int (*output_slot)(const struct rsc *rsc); |
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}; |
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int |
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rsc_init(struct rsc *rsc, u32 idx, enum RSCTYP type, u32 msr, struct hw *hw); |
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int rsc_uninit(struct rsc *rsc); |
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struct rsc_mgr { |
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enum RSCTYP type; /* The type (RSCTYP) of resource to manage */ |
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unsigned int amount; /* The total amount of a kind of resource */ |
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unsigned int avail; /* The amount of currently available resources */ |
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unsigned char *rscs; /* The bit-map for resource allocation */ |
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void *ctrl_blk; /* Chip specific control info block */ |
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struct hw *hw; /* Chip specific object for hardware access */ |
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}; |
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/* Resource management is based on bit-map mechanism */ |
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int rsc_mgr_init(struct rsc_mgr *mgr, enum RSCTYP type, |
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unsigned int amount, struct hw *hw); |
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int rsc_mgr_uninit(struct rsc_mgr *mgr); |
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int mgr_get_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int *ridx); |
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int mgr_put_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int idx); |
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#endif /* CTRESOURCE_H */
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