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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.4 *5 * @File ctresource.h6 *7 * @Brief8 * This file contains the definition of generic hardware resources for9 * resource management.10 *11 * @Author Liu Chun12 * @Date May 13 200813 */14 15#ifndef CTRESOURCE_H16#define CTRESOURCE_H17 18#include <linux/types.h>19 20enum RSCTYP {21 SRC,22 SRCIMP,23 AMIXER,24 SUM,25 DAIO,26 NUM_RSCTYP /* This must be the last one and less than 16 */27};28 29struct rsc_ops;30 31struct rsc {32 u32 idx:12; /* The index of a resource */33 u32 type:4; /* The type (RSCTYP) of a resource */34 u32 conj:12; /* Current conjugate index */35 u32 msr:4; /* The Master Sample Rate a resource working on */36 void *ctrl_blk; /* Chip specific control info block for a resource */37 struct hw *hw; /* Chip specific object for hardware access means */38 const struct rsc_ops *ops; /* Generic resource operations */39};40 41struct rsc_ops {42 void (*master)(struct rsc *rsc); /* Move to master resource */43 void (*next_conj)(struct rsc *rsc); /* Move to next conjugate resource */44 int (*index)(const struct rsc *rsc); /* Return the index of resource */45 /* Return the output slot number */46 int (*output_slot)(const struct rsc *rsc);47};48 49int50rsc_init(struct rsc *rsc, u32 idx, enum RSCTYP type, u32 msr, struct hw *hw);51int rsc_uninit(struct rsc *rsc);52 53struct rsc_mgr {54 enum RSCTYP type; /* The type (RSCTYP) of resource to manage */55 unsigned int amount; /* The total amount of a kind of resource */56 unsigned int avail; /* The amount of currently available resources */57 unsigned char *rscs; /* The bit-map for resource allocation */58 void *ctrl_blk; /* Chip specific control info block */59 struct hw *hw; /* Chip specific object for hardware access */60};61 62/* Resource management is based on bit-map mechanism */63int rsc_mgr_init(struct rsc_mgr *mgr, enum RSCTYP type,64 unsigned int amount, struct hw *hw);65int rsc_mgr_uninit(struct rsc_mgr *mgr);66int mgr_get_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int *ridx);67int mgr_put_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int idx);68 69#endif /* CTRESOURCE_H */70